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[binutils-gdb.git] / bfd / elf32-nds32.c
1 /* NDS32-specific support for 32-bit ELF.
2 Copyright (C) 2012-2020 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdlink.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "libiberty.h"
29 #include "elf/nds32.h"
30 #include "opcode/nds32.h"
31 #include "elf32-nds32.h"
32 #include "opcode/cgen.h"
33 #include "../opcodes/nds32-opc.h"
34
35 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
36 #define OCTETS_PER_BYTE(ABFD, SEC) 1
37
38 /* Relocation HOWTO functions. */
39 static bfd_reloc_status_type nds32_elf_ignore_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type nds32_elf_9_pcrel_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type nds32_elf_hi20_reloc
44 (bfd *, arelent *, asymbol *, void *,
45 asection *, bfd *, char **);
46 static bfd_reloc_status_type nds32_elf_lo12_reloc
47 (bfd *, arelent *, asymbol *, void *,
48 asection *, bfd *, char **);
49 static bfd_reloc_status_type nds32_elf_generic_reloc
50 (bfd *, arelent *, asymbol *, void *,
51 asection *, bfd *, char **);
52 static bfd_reloc_status_type nds32_elf_sda15_reloc
53 (bfd *, arelent *, asymbol *, void *,
54 asection *, bfd *, char **);
55
56 /* Helper functions for HOWTO. */
57 static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc
58 (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma,
59 asection *, bfd_vma, bfd_vma);
60
61 /* Nds32 helper functions. */
62 static bfd_vma calculate_memory_address
63 (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *);
64 static int nds32_get_section_contents (bfd *, asection *,
65 bfd_byte **, bfd_boolean);
66 static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED,
67 Elf_Internal_Sym **);
68 static bfd_boolean nds32_relax_fp_as_gp
69 (struct bfd_link_info *link_info, bfd *abfd, asection *sec,
70 Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend,
71 Elf_Internal_Sym *isymbuf);
72 static bfd_boolean nds32_fag_remove_unused_fpbase
73 (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs,
74 Elf_Internal_Rela *irelend);
75
76 enum
77 {
78 MACH_V1 = bfd_mach_n1h,
79 MACH_V2 = bfd_mach_n1h_v2,
80 MACH_V3 = bfd_mach_n1h_v3,
81 MACH_V3M = bfd_mach_n1h_v3m
82 };
83
84 #define MIN(a, b) ((a) > (b) ? (b) : (a))
85 #define MAX(a, b) ((a) > (b) ? (a) : (b))
86
87 /* The name of the dynamic interpreter. This is put in the .interp
88 section. */
89 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
90
91 #define NDS32_GUARD_SEC_P(flags) ((flags) & SEC_ALLOC \
92 && (flags) & SEC_LOAD \
93 && (flags) & SEC_READONLY)
94
95 /* The nop opcode we use. */
96 #define NDS32_NOP32 0x40000009
97 #define NDS32_NOP16 0x9200
98
99 /* The size in bytes of an entry in the procedure linkage table. */
100 #define PLT_ENTRY_SIZE 24
101 #define PLT_HEADER_SIZE 24
102
103 /* The first entry in a procedure linkage table are reserved,
104 and the initial contents are unimportant (we zero them out).
105 Subsequent entries look like this. */
106 #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */
107 #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */
108 #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */
109 #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */
110 #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */
111
112 /* $ta is change to $r15 (from $r25). */
113 #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */
114 #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */
115 #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */
116 #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */
117 #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */
118 #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */
119
120 #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */
121 #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */
122 #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */
123 #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */
124 #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */
125
126 #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */
127 #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */
128 #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */
129 #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */
130 #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */
131 #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */
132
133 /* These are macros used to get the relocation accurate value. */
134 #define ACCURATE_8BIT_S1 (0x100)
135 #define ACCURATE_U9BIT_S1 (0x400)
136 #define ACCURATE_12BIT_S1 (0x2000)
137 #define ACCURATE_14BIT_S1 (0x4000)
138 #define ACCURATE_19BIT (0x40000)
139
140 /* These are macros used to get the relocation conservative value. */
141 #define CONSERVATIVE_8BIT_S1 (0x100 - 4)
142 #define CONSERVATIVE_14BIT_S1 (0x4000 - 4)
143 #define CONSERVATIVE_16BIT_S1 (0x10000 - 4)
144 #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4)
145 /* These must be more conservative because the address may be in
146 different segment. */
147 #define CONSERVATIVE_15BIT (0x4000 - 0x1000)
148 #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000)
149 #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000)
150 #define CONSERVATIVE_19BIT (0x40000 - 0x1000)
151 #define CONSERVATIVE_20BIT (0x80000 - 0x1000)
152
153 /* Size of small data/bss sections, used to calculate SDA_BASE. */
154 static long got_size = 0;
155 static int is_SDA_BASE_set = 0;
156
157 /* Convert ELF-VER in eflags to string for debugging purpose. */
158 static const char *const nds32_elfver_strtab[] =
159 {
160 "ELF-1.2",
161 "ELF-1.3",
162 "ELF-1.4",
163 };
164
165 /* The nds32 linker needs to keep track of the number of relocs that it
166 decides to copy in check_relocs for each symbol. This is so that
167 it can discard PC relative relocs if it doesn't need them when
168 linking with -Bsymbolic. We store the information in a field
169 extending the regular ELF linker hash table. */
170
171 /* This structure keeps track of the number of PC relative relocs we
172 have copied for a given symbol. */
173
174 struct elf_nds32_pcrel_relocs_copied
175 {
176 /* Next section. */
177 struct elf_nds32_pcrel_relocs_copied *next;
178 /* A section in dynobj. */
179 asection *section;
180 /* Number of relocs copied in this section. */
181 bfd_size_type count;
182 };
183
184 enum elf_nds32_tls_type
185 {
186 GOT_UNKNOWN = (0),
187 GOT_NORMAL = (1 << 0),
188 GOT_TLS_LE = (1 << 1),
189 GOT_TLS_IE = (1 << 2),
190 GOT_TLS_IEGP = (1 << 3),
191 GOT_TLS_LD = (1 << 4),
192 GOT_TLS_GD = (1 << 5),
193 GOT_TLS_DESC = (1 << 6),
194 };
195
196 /* Nds32 ELF linker hash entry. */
197
198 struct elf_nds32_link_hash_entry
199 {
200 struct elf_link_hash_entry root;
201
202 /* For checking relocation type. */
203 enum elf_nds32_tls_type tls_type;
204
205 int offset_to_gp;
206 };
207
208 /* Get the nds32 ELF linker hash table from a link_info structure. */
209
210 #define FP_BASE_NAME "_FP_BASE_"
211 static int check_start_export_sym = 0;
212
213 /* The offset for executable tls relaxation. */
214 #define TP_OFFSET 0x0
215
216 typedef struct
217 {
218 int min_id;
219 int max_id;
220 int count;
221 int bias;
222 int init;
223 } elf32_nds32_relax_group_t;
224
225 struct elf_nds32_obj_tdata
226 {
227 struct elf_obj_tdata root;
228
229 /* tls_type for each local got entry. */
230 char *local_got_tls_type;
231
232 /* GOTPLT entries for TLS descriptors. */
233 bfd_vma *local_tlsdesc_gotent;
234
235 /* for R_NDS32_RELAX_GROUP handling. */
236 elf32_nds32_relax_group_t relax_group;
237
238 unsigned int hdr_size;
239 int* offset_to_gp;
240 };
241
242 #define elf_nds32_tdata(bfd) \
243 ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any)
244
245 #define elf32_nds32_local_got_tls_type(bfd) \
246 (elf_nds32_tdata (bfd)->local_got_tls_type)
247
248 #define elf32_nds32_local_gp_offset(bfd) \
249 (elf_nds32_tdata (bfd)->offset_to_gp)
250
251 #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent))
252
253 #define elf32_nds32_relax_group_ptr(bfd) \
254 &(elf_nds32_tdata (bfd)->relax_group)
255
256 static bfd_boolean
257 nds32_elf_mkobject (bfd *abfd)
258 {
259 return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata),
260 NDS32_ELF_DATA);
261 }
262
263 /* Relocations used for relocation. */
264 /* Define HOWTO2 (for relocation) and HOWTO3 (for relaxation) to
265 initialize array nds32_elf_howto_table in any order. The benefit
266 is that we can add any new relocations with any numbers and don't
267 need to fill the gap by lots of EMPTY_HOWTO. */
268 #define HOWTO2(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
269 [C] = HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC)
270
271 static reloc_howto_type nds32_elf_howto_table[] =
272 {
273 /* This reloc does nothing. */
274 HOWTO2 (R_NDS32_NONE, /* type */
275 0, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 32, /* bitsize */
278 FALSE, /* pc_relative */
279 0, /* bitpos */
280 complain_overflow_bitfield,/* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_NDS32_NONE", /* name */
283 FALSE, /* partial_inplace */
284 0, /* src_mask */
285 0, /* dst_mask */
286 FALSE), /* pcrel_offset */
287
288 /* A 16 bit absolute relocation. */
289 HOWTO2 (R_NDS32_16, /* type */
290 0, /* rightshift */
291 1, /* size (0 = byte, 1 = short, 2 = long) */
292 16, /* bitsize */
293 FALSE, /* pc_relative */
294 0, /* bitpos */
295 complain_overflow_bitfield,/* complain_on_overflow */
296 nds32_elf_generic_reloc,/* special_function */
297 "R_NDS32_16", /* name */
298 FALSE, /* partial_inplace */
299 0xffff, /* src_mask */
300 0xffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
302
303 /* A 32 bit absolute relocation. */
304 HOWTO2 (R_NDS32_32, /* type */
305 0, /* rightshift */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
307 32, /* bitsize */
308 FALSE, /* pc_relative */
309 0, /* bitpos */
310 complain_overflow_bitfield,/* complain_on_overflow */
311 nds32_elf_generic_reloc,/* special_function */
312 "R_NDS32_32", /* name */
313 FALSE, /* partial_inplace */
314 0xffffffff, /* src_mask */
315 0xffffffff, /* dst_mask */
316 FALSE), /* pcrel_offset */
317
318 /* A 20 bit address. */
319 HOWTO2 (R_NDS32_20, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 20, /* bitsize */
323 FALSE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_unsigned,/* complain_on_overflow */
326 nds32_elf_generic_reloc,/* special_function */
327 "R_NDS32_20", /* name */
328 FALSE, /* partial_inplace */
329 0xfffff, /* src_mask */
330 0xfffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
332
333 /* An PC Relative 9-bit relocation, shifted by 2.
334 This reloc is complicated because relocations are relative to pc & -4.
335 i.e. branches in the right insn slot use the address of the left insn
336 slot for pc. */
337 /* It's not clear whether this should have partial_inplace set or not.
338 Branch relaxing in the assembler can store the addend in the insn,
339 and if bfd_install_relocation gets called the addend may get added
340 again. */
341 HOWTO2 (R_NDS32_9_PCREL, /* type */
342 1, /* rightshift */
343 1, /* size (0 = byte, 1 = short, 2 = long) */
344 8, /* bitsize */
345 TRUE, /* pc_relative */
346 0, /* bitpos */
347 complain_overflow_signed,/* complain_on_overflow */
348 nds32_elf_9_pcrel_reloc,/* special_function */
349 "R_NDS32_9_PCREL", /* name */
350 FALSE, /* partial_inplace */
351 0xff, /* src_mask */
352 0xff, /* dst_mask */
353 TRUE), /* pcrel_offset */
354
355 /* A relative 15 bit relocation, right shifted by 1. */
356 HOWTO2 (R_NDS32_15_PCREL, /* type */
357 1, /* rightshift */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
359 14, /* bitsize */
360 TRUE, /* pc_relative */
361 0, /* bitpos */
362 complain_overflow_signed,/* complain_on_overflow */
363 bfd_elf_generic_reloc, /* special_function */
364 "R_NDS32_15_PCREL", /* name */
365 FALSE, /* partial_inplace */
366 0x3fff, /* src_mask */
367 0x3fff, /* dst_mask */
368 TRUE), /* pcrel_offset */
369
370 /* A relative 17 bit relocation, right shifted by 1. */
371 HOWTO2 (R_NDS32_17_PCREL, /* type */
372 1, /* rightshift */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
375 TRUE, /* pc_relative */
376 0, /* bitpos */
377 complain_overflow_signed,/* complain_on_overflow */
378 bfd_elf_generic_reloc, /* special_function */
379 "R_NDS32_17_PCREL", /* name */
380 FALSE, /* partial_inplace */
381 0xffff, /* src_mask */
382 0xffff, /* dst_mask */
383 TRUE), /* pcrel_offset */
384
385 /* A relative 25 bit relocation, right shifted by 1. */
386 /* It's not clear whether this should have partial_inplace set or not.
387 Branch relaxing in the assembler can store the addend in the insn,
388 and if bfd_install_relocation gets called the addend may get added
389 again. */
390 HOWTO2 (R_NDS32_25_PCREL, /* type */
391 1, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 24, /* bitsize */
394 TRUE, /* pc_relative */
395 0, /* bitpos */
396 complain_overflow_signed,/* complain_on_overflow */
397 bfd_elf_generic_reloc, /* special_function */
398 "R_NDS32_25_PCREL", /* name */
399 FALSE, /* partial_inplace */
400 0xffffff, /* src_mask */
401 0xffffff, /* dst_mask */
402 TRUE), /* pcrel_offset */
403
404 /* High 20 bits of address when lower 12 is or'd in. */
405 HOWTO2 (R_NDS32_HI20, /* type */
406 12, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 20, /* bitsize */
409 FALSE, /* pc_relative */
410 0, /* bitpos */
411 complain_overflow_dont,/* complain_on_overflow */
412 nds32_elf_hi20_reloc, /* special_function */
413 "R_NDS32_HI20", /* name */
414 FALSE, /* partial_inplace */
415 0x000fffff, /* src_mask */
416 0x000fffff, /* dst_mask */
417 FALSE), /* pcrel_offset */
418
419 /* Lower 12 bits of address. */
420 HOWTO2 (R_NDS32_LO12S3, /* type */
421 3, /* rightshift */
422 2, /* size (0 = byte, 1 = short, 2 = long) */
423 9, /* bitsize */
424 FALSE, /* pc_relative */
425 0, /* bitpos */
426 complain_overflow_dont,/* complain_on_overflow */
427 nds32_elf_lo12_reloc, /* special_function */
428 "R_NDS32_LO12S3", /* name */
429 FALSE, /* partial_inplace */
430 0x000001ff, /* src_mask */
431 0x000001ff, /* dst_mask */
432 FALSE), /* pcrel_offset */
433
434 /* Lower 12 bits of address. */
435 HOWTO2 (R_NDS32_LO12S2, /* type */
436 2, /* rightshift */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
438 10, /* bitsize */
439 FALSE, /* pc_relative */
440 0, /* bitpos */
441 complain_overflow_dont,/* complain_on_overflow */
442 nds32_elf_lo12_reloc, /* special_function */
443 "R_NDS32_LO12S2", /* name */
444 FALSE, /* partial_inplace */
445 0x000003ff, /* src_mask */
446 0x000003ff, /* dst_mask */
447 FALSE), /* pcrel_offset */
448
449 /* Lower 12 bits of address. */
450 HOWTO2 (R_NDS32_LO12S1, /* type */
451 1, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 11, /* bitsize */
454 FALSE, /* pc_relative */
455 0, /* bitpos */
456 complain_overflow_dont,/* complain_on_overflow */
457 nds32_elf_lo12_reloc, /* special_function */
458 "R_NDS32_LO12S1", /* name */
459 FALSE, /* partial_inplace */
460 0x000007ff, /* src_mask */
461 0x000007ff, /* dst_mask */
462 FALSE), /* pcrel_offset */
463
464 /* Lower 12 bits of address. */
465 HOWTO2 (R_NDS32_LO12S0, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 12, /* bitsize */
469 FALSE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_dont,/* complain_on_overflow */
472 nds32_elf_lo12_reloc, /* special_function */
473 "R_NDS32_LO12S0", /* name */
474 FALSE, /* partial_inplace */
475 0x00000fff, /* src_mask */
476 0x00000fff, /* dst_mask */
477 FALSE), /* pcrel_offset */
478
479 /* Small data area 15 bits offset. */
480 HOWTO2 (R_NDS32_SDA15S3, /* type */
481 3, /* rightshift */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
483 15, /* bitsize */
484 FALSE, /* pc_relative */
485 0, /* bitpos */
486 complain_overflow_signed,/* complain_on_overflow */
487 nds32_elf_sda15_reloc, /* special_function */
488 "R_NDS32_SDA15S3", /* name */
489 FALSE, /* partial_inplace */
490 0x00007fff, /* src_mask */
491 0x00007fff, /* dst_mask */
492 FALSE), /* pcrel_offset */
493
494 /* Small data area 15 bits offset. */
495 HOWTO2 (R_NDS32_SDA15S2, /* type */
496 2, /* rightshift */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
498 15, /* bitsize */
499 FALSE, /* pc_relative */
500 0, /* bitpos */
501 complain_overflow_signed,/* complain_on_overflow */
502 nds32_elf_sda15_reloc, /* special_function */
503 "R_NDS32_SDA15S2", /* name */
504 FALSE, /* partial_inplace */
505 0x00007fff, /* src_mask */
506 0x00007fff, /* dst_mask */
507 FALSE), /* pcrel_offset */
508
509 /* Small data area 15 bits offset. */
510 HOWTO2 (R_NDS32_SDA15S1, /* type */
511 1, /* rightshift */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
513 15, /* bitsize */
514 FALSE, /* pc_relative */
515 0, /* bitpos */
516 complain_overflow_signed,/* complain_on_overflow */
517 nds32_elf_sda15_reloc, /* special_function */
518 "R_NDS32_SDA15S1", /* name */
519 FALSE, /* partial_inplace */
520 0x00007fff, /* src_mask */
521 0x00007fff, /* dst_mask */
522 FALSE), /* pcrel_offset */
523
524 /* Small data area 15 bits offset. */
525 HOWTO2 (R_NDS32_SDA15S0, /* type */
526 0, /* rightshift */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
528 15, /* bitsize */
529 FALSE, /* pc_relative */
530 0, /* bitpos */
531 complain_overflow_signed,/* complain_on_overflow */
532 nds32_elf_sda15_reloc, /* special_function */
533 "R_NDS32_SDA15S0", /* name */
534 FALSE, /* partial_inplace */
535 0x00007fff, /* src_mask */
536 0x00007fff, /* dst_mask */
537 FALSE), /* pcrel_offset */
538
539 /* GNU extension to record C++ vtable hierarchy */
540 HOWTO2 (R_NDS32_GNU_VTINHERIT,/* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 0, /* bitsize */
544 FALSE, /* pc_relative */
545 0, /* bitpos */
546 complain_overflow_dont,/* complain_on_overflow */
547 NULL, /* special_function */
548 "R_NDS32_GNU_VTINHERIT",/* name */
549 FALSE, /* partial_inplace */
550 0, /* src_mask */
551 0, /* dst_mask */
552 FALSE), /* pcrel_offset */
553
554 /* GNU extension to record C++ vtable member usage */
555 HOWTO2 (R_NDS32_GNU_VTENTRY, /* type */
556 0, /* rightshift */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
558 0, /* bitsize */
559 FALSE, /* pc_relative */
560 0, /* bitpos */
561 complain_overflow_dont,/* complain_on_overflow */
562 _bfd_elf_rel_vtable_reloc_fn,/* special_function */
563 "R_NDS32_GNU_VTENTRY", /* name */
564 FALSE, /* partial_inplace */
565 0, /* src_mask */
566 0, /* dst_mask */
567 FALSE), /* pcrel_offset */
568
569 /* A 16 bit absolute relocation. */
570 HOWTO2 (R_NDS32_16_RELA, /* type */
571 0, /* rightshift */
572 1, /* size (0 = byte, 1 = short, 2 = long) */
573 16, /* bitsize */
574 FALSE, /* pc_relative */
575 0, /* bitpos */
576 complain_overflow_bitfield,/* complain_on_overflow */
577 bfd_elf_generic_reloc, /* special_function */
578 "R_NDS32_16_RELA", /* name */
579 FALSE, /* partial_inplace */
580 0xffff, /* src_mask */
581 0xffff, /* dst_mask */
582 FALSE), /* pcrel_offset */
583
584 /* A 32 bit absolute relocation. */
585 HOWTO2 (R_NDS32_32_RELA, /* type */
586 0, /* rightshift */
587 2, /* size (0 = byte, 1 = short, 2 = long) */
588 32, /* bitsize */
589 FALSE, /* pc_relative */
590 0, /* bitpos */
591 complain_overflow_bitfield,/* complain_on_overflow */
592 bfd_elf_generic_reloc, /* special_function */
593 "R_NDS32_32_RELA", /* name */
594 FALSE, /* partial_inplace */
595 0xffffffff, /* src_mask */
596 0xffffffff, /* dst_mask */
597 FALSE), /* pcrel_offset */
598
599 /* A 20 bit address. */
600 HOWTO2 (R_NDS32_20_RELA, /* type */
601 0, /* rightshift */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
603 20, /* bitsize */
604 FALSE, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_signed,/* complain_on_overflow */
607 bfd_elf_generic_reloc, /* special_function */
608 "R_NDS32_20_RELA", /* name */
609 FALSE, /* partial_inplace */
610 0xfffff, /* src_mask */
611 0xfffff, /* dst_mask */
612 FALSE), /* pcrel_offset */
613
614 HOWTO2 (R_NDS32_9_PCREL_RELA, /* type */
615 1, /* rightshift */
616 1, /* size (0 = byte, 1 = short, 2 = long) */
617 8, /* bitsize */
618 TRUE, /* pc_relative */
619 0, /* bitpos */
620 complain_overflow_signed,/* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_NDS32_9_PCREL_RELA",/* name */
623 FALSE, /* partial_inplace */
624 0xff, /* src_mask */
625 0xff, /* dst_mask */
626 TRUE), /* pcrel_offset */
627
628 /* A relative 15 bit relocation, right shifted by 1. */
629 HOWTO2 (R_NDS32_15_PCREL_RELA,/* type */
630 1, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 14, /* bitsize */
633 TRUE, /* pc_relative */
634 0, /* bitpos */
635 complain_overflow_signed,/* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_NDS32_15_PCREL_RELA",/* name */
638 FALSE, /* partial_inplace */
639 0x3fff, /* src_mask */
640 0x3fff, /* dst_mask */
641 TRUE), /* pcrel_offset */
642
643 /* A relative 17 bit relocation, right shifted by 1. */
644 HOWTO2 (R_NDS32_17_PCREL_RELA,/* type */
645 1, /* rightshift */
646 2, /* size (0 = byte, 1 = short, 2 = long) */
647 16, /* bitsize */
648 TRUE, /* pc_relative */
649 0, /* bitpos */
650 complain_overflow_signed,/* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_NDS32_17_PCREL_RELA",/* name */
653 FALSE, /* partial_inplace */
654 0xffff, /* src_mask */
655 0xffff, /* dst_mask */
656 TRUE), /* pcrel_offset */
657
658 /* A relative 25 bit relocation, right shifted by 2. */
659 HOWTO2 (R_NDS32_25_PCREL_RELA,/* type */
660 1, /* rightshift */
661 2, /* size (0 = byte, 1 = short, 2 = long) */
662 24, /* bitsize */
663 TRUE, /* pc_relative */
664 0, /* bitpos */
665 complain_overflow_signed,/* complain_on_overflow */
666 bfd_elf_generic_reloc, /* special_function */
667 "R_NDS32_25_PCREL_RELA",/* name */
668 FALSE, /* partial_inplace */
669 0xffffff, /* src_mask */
670 0xffffff, /* dst_mask */
671 TRUE), /* pcrel_offset */
672
673 /* High 20 bits of address when lower 16 is or'd in. */
674 HOWTO2 (R_NDS32_HI20_RELA, /* type */
675 12, /* rightshift */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
677 20, /* bitsize */
678 FALSE, /* pc_relative */
679 0, /* bitpos */
680 complain_overflow_dont,/* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_NDS32_HI20_RELA", /* name */
683 FALSE, /* partial_inplace */
684 0x000fffff, /* src_mask */
685 0x000fffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
687
688 /* Lower 12 bits of address. */
689 HOWTO2 (R_NDS32_LO12S3_RELA, /* type */
690 3, /* rightshift */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
692 9, /* bitsize */
693 FALSE, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_dont,/* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_NDS32_LO12S3_RELA", /* name */
698 FALSE, /* partial_inplace */
699 0x000001ff, /* src_mask */
700 0x000001ff, /* dst_mask */
701 FALSE), /* pcrel_offset */
702
703 /* Lower 12 bits of address. */
704 HOWTO2 (R_NDS32_LO12S2_RELA, /* type */
705 2, /* rightshift */
706 2, /* size (0 = byte, 1 = short, 2 = long) */
707 10, /* bitsize */
708 FALSE, /* pc_relative */
709 0, /* bitpos */
710 complain_overflow_dont,/* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_NDS32_LO12S2_RELA", /* name */
713 FALSE, /* partial_inplace */
714 0x000003ff, /* src_mask */
715 0x000003ff, /* dst_mask */
716 FALSE), /* pcrel_offset */
717
718 /* Lower 12 bits of address. */
719 HOWTO2 (R_NDS32_LO12S1_RELA, /* type */
720 1, /* rightshift */
721 2, /* size (0 = byte, 1 = short, 2 = long) */
722 11, /* bitsize */
723 FALSE, /* pc_relative */
724 0, /* bitpos */
725 complain_overflow_dont,/* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_NDS32_LO12S1_RELA", /* name */
728 FALSE, /* partial_inplace */
729 0x000007ff, /* src_mask */
730 0x000007ff, /* dst_mask */
731 FALSE), /* pcrel_offset */
732
733 /* Lower 12 bits of address. */
734 HOWTO2 (R_NDS32_LO12S0_RELA, /* type */
735 0, /* rightshift */
736 2, /* size (0 = byte, 1 = short, 2 = long) */
737 12, /* bitsize */
738 FALSE, /* pc_relative */
739 0, /* bitpos */
740 complain_overflow_dont,/* complain_on_overflow */
741 bfd_elf_generic_reloc, /* special_function */
742 "R_NDS32_LO12S0_RELA", /* name */
743 FALSE, /* partial_inplace */
744 0x00000fff, /* src_mask */
745 0x00000fff, /* dst_mask */
746 FALSE), /* pcrel_offset */
747
748 /* Small data area 15 bits offset. */
749 HOWTO2 (R_NDS32_SDA15S3_RELA, /* type */
750 3, /* rightshift */
751 2, /* size (0 = byte, 1 = short, 2 = long) */
752 15, /* bitsize */
753 FALSE, /* pc_relative */
754 0, /* bitpos */
755 complain_overflow_signed,/* complain_on_overflow */
756 bfd_elf_generic_reloc, /* special_function */
757 "R_NDS32_SDA15S3_RELA",/* name */
758 FALSE, /* partial_inplace */
759 0x00007fff, /* src_mask */
760 0x00007fff, /* dst_mask */
761 FALSE), /* pcrel_offset */
762
763 /* Small data area 15 bits offset. */
764 HOWTO2 (R_NDS32_SDA15S2_RELA, /* type */
765 2, /* rightshift */
766 2, /* size (0 = byte, 1 = short, 2 = long) */
767 15, /* bitsize */
768 FALSE, /* pc_relative */
769 0, /* bitpos */
770 complain_overflow_signed,/* complain_on_overflow */
771 bfd_elf_generic_reloc, /* special_function */
772 "R_NDS32_SDA15S2_RELA",/* name */
773 FALSE, /* partial_inplace */
774 0x00007fff, /* src_mask */
775 0x00007fff, /* dst_mask */
776 FALSE), /* pcrel_offset */
777
778 HOWTO2 (R_NDS32_SDA15S1_RELA, /* type */
779 1, /* rightshift */
780 2, /* size (0 = byte, 1 = short, 2 = long) */
781 15, /* bitsize */
782 FALSE, /* pc_relative */
783 0, /* bitpos */
784 complain_overflow_signed,/* complain_on_overflow */
785 bfd_elf_generic_reloc, /* special_function */
786 "R_NDS32_SDA15S1_RELA",/* name */
787 FALSE, /* partial_inplace */
788 0x00007fff, /* src_mask */
789 0x00007fff, /* dst_mask */
790 FALSE), /* pcrel_offset */
791
792 HOWTO2 (R_NDS32_SDA15S0_RELA, /* type */
793 0, /* rightshift */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
795 15, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_signed,/* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_NDS32_SDA15S0_RELA",/* name */
801 FALSE, /* partial_inplace */
802 0x00007fff, /* src_mask */
803 0x00007fff, /* dst_mask */
804 FALSE), /* pcrel_offset */
805
806 /* GNU extension to record C++ vtable hierarchy */
807 HOWTO2 (R_NDS32_RELA_GNU_VTINHERIT,/* type */
808 0, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 0, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont,/* complain_on_overflow */
814 NULL, /* special_function */
815 "R_NDS32_RELA_GNU_VTINHERIT",/* name */
816 FALSE, /* partial_inplace */
817 0, /* src_mask */
818 0, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
821 /* GNU extension to record C++ vtable member usage */
822 HOWTO2 (R_NDS32_RELA_GNU_VTENTRY,/* type */
823 0, /* rightshift */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
825 0, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont,/* complain_on_overflow */
829 _bfd_elf_rel_vtable_reloc_fn,/* special_function */
830 "R_NDS32_RELA_GNU_VTENTRY",/* name */
831 FALSE, /* partial_inplace */
832 0, /* src_mask */
833 0, /* dst_mask */
834 FALSE), /* pcrel_offset */
835
836 /* Like R_NDS32_20, but referring to the GOT table entry for
837 the symbol. */
838 HOWTO2 (R_NDS32_GOT20, /* type */
839 0, /* rightshift */
840 2, /* size (0 = byte, 1 = short, 2 = long) */
841 20, /* bitsize */
842 FALSE, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_signed,/* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_NDS32_GOT20", /* name */
847 FALSE, /* partial_inplace */
848 0xfffff, /* src_mask */
849 0xfffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
851
852 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
853 entry for the symbol. */
854 HOWTO2 (R_NDS32_25_PLTREL, /* type */
855 1, /* rightshift */
856 2, /* size (0 = byte, 1 = short, 2 = long) */
857 24, /* bitsize */
858 TRUE, /* pc_relative */
859 0, /* bitpos */
860 complain_overflow_signed,/* complain_on_overflow */
861 bfd_elf_generic_reloc, /* special_function */
862 "R_NDS32_25_PLTREL", /* name */
863 FALSE, /* partial_inplace */
864 0xffffff, /* src_mask */
865 0xffffff, /* dst_mask */
866 TRUE), /* pcrel_offset */
867
868 /* This is used only by the dynamic linker. The symbol should exist
869 both in the object being run and in some shared library. The
870 dynamic linker copies the data addressed by the symbol from the
871 shared library into the object, because the object being
872 run has to have the data at some particular address. */
873 HOWTO2 (R_NDS32_COPY, /* type */
874 0, /* rightshift */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
876 32, /* bitsize */
877 FALSE, /* pc_relative */
878 0, /* bitpos */
879 complain_overflow_bitfield,/* complain_on_overflow */
880 bfd_elf_generic_reloc, /* special_function */
881 "R_NDS32_COPY", /* name */
882 FALSE, /* partial_inplace */
883 0xffffffff, /* src_mask */
884 0xffffffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
886
887 /* Like R_NDS32_20, but used when setting global offset table
888 entries. */
889 HOWTO2 (R_NDS32_GLOB_DAT, /* type */
890 0, /* rightshift */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
892 32, /* bitsize */
893 FALSE, /* pc_relative */
894 0, /* bitpos */
895 complain_overflow_bitfield,/* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_NDS32_GLOB_DAT", /* name */
898 FALSE, /* partial_inplace */
899 0xffffffff, /* src_mask */
900 0xffffffff, /* dst_mask */
901 FALSE), /* pcrel_offset */
902
903 /* Marks a procedure linkage table entry for a symbol. */
904 HOWTO2 (R_NDS32_JMP_SLOT, /* type */
905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 32, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_bitfield,/* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_NDS32_JMP_SLOT", /* name */
913 FALSE, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* Used only by the dynamic linker. When the object is run, this
919 longword is set to the load address of the object, plus the
920 addend. */
921 HOWTO2 (R_NDS32_RELATIVE, /* type */
922 0, /* rightshift */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
924 32, /* bitsize */
925 FALSE, /* pc_relative */
926 0, /* bitpos */
927 complain_overflow_bitfield,/* complain_on_overflow */
928 bfd_elf_generic_reloc, /* special_function */
929 "R_NDS32_RELATIVE", /* name */
930 FALSE, /* partial_inplace */
931 0xffffffff, /* src_mask */
932 0xffffffff, /* dst_mask */
933 FALSE), /* pcrel_offset */
934
935 HOWTO2 (R_NDS32_GOTOFF, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 20, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_signed,/* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_NDS32_GOTOFF", /* name */
944 FALSE, /* partial_inplace */
945 0xfffff, /* src_mask */
946 0xfffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* An PC Relative 20-bit relocation used when setting PIC offset
950 table register. */
951 HOWTO2 (R_NDS32_GOTPC20, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 20, /* bitsize */
955 TRUE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_signed,/* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_NDS32_GOTPC20", /* name */
960 FALSE, /* partial_inplace */
961 0xfffff, /* src_mask */
962 0xfffff, /* dst_mask */
963 TRUE), /* pcrel_offset */
964
965 /* Like R_NDS32_HI20, but referring to the GOT table entry for
966 the symbol. */
967 HOWTO2 (R_NDS32_GOT_HI20, /* type */
968 12, /* rightshift */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
970 20, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_dont,/* complain_on_overflow */
974 bfd_elf_generic_reloc, /* special_function */
975 "R_NDS32_GOT_HI20", /* name */
976 FALSE, /* partial_inplace */
977 0x000fffff, /* src_mask */
978 0x000fffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
980 HOWTO2 (R_NDS32_GOT_LO12, /* type */
981 0, /* rightshift */
982 2, /* size (0 = byte, 1 = short, 2 = long) */
983 12, /* bitsize */
984 FALSE, /* pc_relative */
985 0, /* bitpos */
986 complain_overflow_dont,/* complain_on_overflow */
987 bfd_elf_generic_reloc, /* special_function */
988 "R_NDS32_GOT_LO12", /* name */
989 FALSE, /* partial_inplace */
990 0x00000fff, /* src_mask */
991 0x00000fff, /* dst_mask */
992 FALSE), /* pcrel_offset */
993
994 /* An PC Relative relocation used when setting PIC offset table register.
995 Like R_NDS32_HI20, but referring to the GOT table entry for
996 the symbol. */
997 HOWTO2 (R_NDS32_GOTPC_HI20, /* type */
998 12, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 20, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_dont,/* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_NDS32_GOTPC_HI20", /* name */
1006 FALSE, /* partial_inplace */
1007 0x000fffff, /* src_mask */
1008 0x000fffff, /* dst_mask */
1009 TRUE), /* pcrel_offset */
1010 HOWTO2 (R_NDS32_GOTPC_LO12, /* type */
1011 0, /* rightshift */
1012 2, /* size (0 = byte, 1 = short, 2 = long) */
1013 12, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont,/* complain_on_overflow */
1017 bfd_elf_generic_reloc, /* special_function */
1018 "R_NDS32_GOTPC_LO12", /* name */
1019 FALSE, /* partial_inplace */
1020 0x00000fff, /* src_mask */
1021 0x00000fff, /* dst_mask */
1022 TRUE), /* pcrel_offset */
1023
1024 HOWTO2 (R_NDS32_GOTOFF_HI20, /* type */
1025 12, /* rightshift */
1026 2, /* size (0 = byte, 1 = short, 2 = long) */
1027 20, /* bitsize */
1028 FALSE, /* pc_relative */
1029 0, /* bitpos */
1030 complain_overflow_dont,/* complain_on_overflow */
1031 bfd_elf_generic_reloc, /* special_function */
1032 "R_NDS32_GOTOFF_HI20", /* name */
1033 FALSE, /* partial_inplace */
1034 0x000fffff, /* src_mask */
1035 0x000fffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1037 HOWTO2 (R_NDS32_GOTOFF_LO12, /* type */
1038 0, /* rightshift */
1039 2, /* size (0 = byte, 1 = short, 2 = long) */
1040 12, /* bitsize */
1041 FALSE, /* pc_relative */
1042 0, /* bitpos */
1043 complain_overflow_dont,/* complain_on_overflow */
1044 bfd_elf_generic_reloc, /* special_function */
1045 "R_NDS32_GOTOFF_LO12", /* name */
1046 FALSE, /* partial_inplace */
1047 0x00000fff, /* src_mask */
1048 0x00000fff, /* dst_mask */
1049 FALSE), /* pcrel_offset */
1050
1051 /* Alignment hint for relaxable instruction. This is used with
1052 R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2
1053 in order to make next label aligned on word boundary. */
1054 HOWTO2 (R_NDS32_INSN16, /* type */
1055 0, /* rightshift */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1057 32, /* bitsize */
1058 FALSE, /* pc_relative */
1059 0, /* bitpos */
1060 complain_overflow_dont,/* complain_on_overflow */
1061 nds32_elf_ignore_reloc,/* special_function */
1062 "R_NDS32_INSN16", /* name */
1063 FALSE, /* partial_inplace */
1064 0x00000fff, /* src_mask */
1065 0x00000fff, /* dst_mask */
1066 FALSE), /* pcrel_offset */
1067
1068 /* Alignment hint for label. */
1069 HOWTO2 (R_NDS32_LABEL, /* type */
1070 0, /* rightshift */
1071 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 32, /* bitsize */
1073 FALSE, /* pc_relative */
1074 0, /* bitpos */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 nds32_elf_ignore_reloc,/* special_function */
1077 "R_NDS32_LABEL", /* name */
1078 FALSE, /* partial_inplace */
1079 0xffffffff, /* src_mask */
1080 0xffffffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1082
1083 /* Relax hint for unconditional call sequence */
1084 HOWTO2 (R_NDS32_LONGCALL1, /* type */
1085 0, /* rightshift */
1086 2, /* size (0 = byte, 1 = short, 2 = long) */
1087 32, /* bitsize */
1088 FALSE, /* pc_relative */
1089 0, /* bitpos */
1090 complain_overflow_dont,/* complain_on_overflow */
1091 nds32_elf_ignore_reloc,/* special_function */
1092 "R_NDS32_LONGCALL1", /* name */
1093 FALSE, /* partial_inplace */
1094 0xffffffff, /* src_mask */
1095 0xffffffff, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1097
1098 /* Relax hint for conditional call sequence. */
1099 HOWTO2 (R_NDS32_LONGCALL2, /* type */
1100 0, /* rightshift */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1102 32, /* bitsize */
1103 FALSE, /* pc_relative */
1104 0, /* bitpos */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 nds32_elf_ignore_reloc,/* special_function */
1107 "R_NDS32_LONGCALL2", /* name */
1108 FALSE, /* partial_inplace */
1109 0xffffffff, /* src_mask */
1110 0xffffffff, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1112
1113 /* Relax hint for conditional call sequence. */
1114 HOWTO2 (R_NDS32_LONGCALL3, /* type */
1115 0, /* rightshift */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 32, /* bitsize */
1118 FALSE, /* pc_relative */
1119 0, /* bitpos */
1120 complain_overflow_dont,/* complain_on_overflow */
1121 nds32_elf_ignore_reloc,/* special_function */
1122 "R_NDS32_LONGCALL3", /* name */
1123 FALSE, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1127
1128 /* Relax hint for unconditional branch sequence. */
1129 HOWTO2 (R_NDS32_LONGJUMP1, /* type */
1130 0, /* rightshift */
1131 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 32, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont,/* complain_on_overflow */
1136 nds32_elf_ignore_reloc,/* special_function */
1137 "R_NDS32_LONGJUMP1", /* name */
1138 FALSE, /* partial_inplace */
1139 0xffffffff, /* src_mask */
1140 0xffffffff, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Relax hint for conditional branch sequence. */
1144 HOWTO2 (R_NDS32_LONGJUMP2, /* type */
1145 0, /* rightshift */
1146 2, /* size (0 = byte, 1 = short, 2 = long) */
1147 32, /* bitsize */
1148 FALSE, /* pc_relative */
1149 0, /* bitpos */
1150 complain_overflow_dont,/* complain_on_overflow */
1151 nds32_elf_ignore_reloc,/* special_function */
1152 "R_NDS32_LONGJUMP2", /* name */
1153 FALSE, /* partial_inplace */
1154 0xffffffff, /* src_mask */
1155 0xffffffff, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1157
1158 /* Relax hint for conditional branch sequence. */
1159 HOWTO2 (R_NDS32_LONGJUMP3, /* type */
1160 0, /* rightshift */
1161 2, /* size (0 = byte, 1 = short, 2 = long) */
1162 32, /* bitsize */
1163 FALSE, /* pc_relative */
1164 0, /* bitpos */
1165 complain_overflow_dont,/* complain_on_overflow */
1166 nds32_elf_ignore_reloc,/* special_function */
1167 "R_NDS32_LONGJUMP3", /* name */
1168 FALSE, /* partial_inplace */
1169 0xffffffff, /* src_mask */
1170 0xffffffff, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1172
1173 /* Relax hint for load/store sequence. */
1174 HOWTO2 (R_NDS32_LOADSTORE, /* type */
1175 0, /* rightshift */
1176 2, /* size (0 = byte, 1 = short, 2 = long) */
1177 32, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_dont,/* complain_on_overflow */
1181 nds32_elf_ignore_reloc,/* special_function */
1182 "R_NDS32_LOADSTORE", /* name */
1183 FALSE, /* partial_inplace */
1184 0xffffffff, /* src_mask */
1185 0xffffffff, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* Relax hint for load/store sequence. */
1189 HOWTO2 (R_NDS32_9_FIXED_RELA, /* type */
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 FALSE, /* pc_relative */
1194 0, /* bitpos */
1195 complain_overflow_dont,/* complain_on_overflow */
1196 nds32_elf_ignore_reloc,/* special_function */
1197 "R_NDS32_9_FIXED_RELA",/* name */
1198 FALSE, /* partial_inplace */
1199 0x000000ff, /* src_mask */
1200 0x000000ff, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1202
1203 /* Relax hint for load/store sequence. */
1204 HOWTO2 (R_NDS32_15_FIXED_RELA,/* type */
1205 0, /* rightshift */
1206 2, /* size (0 = byte, 1 = short, 2 = long) */
1207 32, /* bitsize */
1208 FALSE, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont,/* complain_on_overflow */
1211 nds32_elf_ignore_reloc,/* special_function */
1212 "R_NDS32_15_FIXED_RELA",/* name */
1213 FALSE, /* partial_inplace */
1214 0x00003fff, /* src_mask */
1215 0x00003fff, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1217
1218 /* Relax hint for load/store sequence. */
1219 HOWTO2 (R_NDS32_17_FIXED_RELA,/* type */
1220 0, /* rightshift */
1221 2, /* size (0 = byte, 1 = short, 2 = long) */
1222 32, /* bitsize */
1223 FALSE, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_dont,/* complain_on_overflow */
1226 nds32_elf_ignore_reloc,/* special_function */
1227 "R_NDS32_17_FIXED_RELA",/* name */
1228 FALSE, /* partial_inplace */
1229 0x0000ffff, /* src_mask */
1230 0x0000ffff, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1232
1233 /* Relax hint for load/store sequence. */
1234 HOWTO2 (R_NDS32_25_FIXED_RELA,/* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
1240 complain_overflow_dont,/* complain_on_overflow */
1241 nds32_elf_ignore_reloc,/* special_function */
1242 "R_NDS32_25_FIXED_RELA",/* name */
1243 FALSE, /* partial_inplace */
1244 0x00ffffff, /* src_mask */
1245 0x00ffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* High 20 bits of PLT symbol offset relative to PC. */
1249 HOWTO2 (R_NDS32_PLTREL_HI20, /* type */
1250 12, /* rightshift */
1251 2, /* size (0 = byte, 1 = short, 2 = long) */
1252 20, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_dont,/* complain_on_overflow */
1256 bfd_elf_generic_reloc, /* special_function */
1257 "R_NDS32_PLTREL_HI20", /* name */
1258 FALSE, /* partial_inplace */
1259 0x000fffff, /* src_mask */
1260 0x000fffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* Low 12 bits of PLT symbol offset relative to PC. */
1264 HOWTO2 (R_NDS32_PLTREL_LO12, /* type */
1265 0, /* rightshift */
1266 2, /* size (0 = byte, 1 = short, 2 = long) */
1267 12, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 bfd_elf_generic_reloc, /* special_function */
1272 "R_NDS32_PLTREL_LO12", /* name */
1273 FALSE, /* partial_inplace */
1274 0x00000fff, /* src_mask */
1275 0x00000fff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* High 20 bits of PLT symbol offset relative to GOT (GP). */
1279 HOWTO2 (R_NDS32_PLT_GOTREL_HI20, /* type */
1280 12, /* rightshift */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1282 20, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont,/* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_NDS32_PLT_GOTREL_HI20",/* name */
1288 FALSE, /* partial_inplace */
1289 0x000fffff, /* src_mask */
1290 0x000fffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* Low 12 bits of PLT symbol offset relative to GOT (GP). */
1294 HOWTO2 (R_NDS32_PLT_GOTREL_LO12,/* type */
1295 0, /* rightshift */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 12, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont,/* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_NDS32_PLT_GOTREL_LO12",/* name */
1303 FALSE, /* partial_inplace */
1304 0x00000fff, /* src_mask */
1305 0x00000fff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 /* Small data area 12 bits offset. */
1309 HOWTO2 (R_NDS32_SDA12S2_DP_RELA,/* type */
1310 2, /* rightshift */
1311 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 12, /* bitsize */
1313 FALSE, /* pc_relative */
1314 0, /* bitpos */
1315 complain_overflow_signed,/* complain_on_overflow */
1316 bfd_elf_generic_reloc, /* special_function */
1317 "R_NDS32_SDA12S2_DP_RELA",/* name */
1318 FALSE, /* partial_inplace */
1319 0x00000fff, /* src_mask */
1320 0x00000fff, /* dst_mask */
1321 FALSE), /* pcrel_offset */
1322
1323 /* Small data area 12 bits offset. */
1324 HOWTO2 (R_NDS32_SDA12S2_SP_RELA,/* type */
1325 2, /* rightshift */
1326 2, /* size (0 = byte, 1 = short, 2 = long) */
1327 12, /* bitsize */
1328 FALSE, /* pc_relative */
1329 0, /* bitpos */
1330 complain_overflow_signed,/* complain_on_overflow */
1331 bfd_elf_generic_reloc, /* special_function */
1332 "R_NDS32_SDA12S2_SP_RELA",/* name */
1333 FALSE, /* partial_inplace */
1334 0x00000fff, /* src_mask */
1335 0x00000fff, /* dst_mask */
1336 FALSE), /* pcrel_offset */
1337 /* Lower 12 bits of address. */
1338
1339 HOWTO2 (R_NDS32_LO12S2_DP_RELA, /* type */
1340 2, /* rightshift */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1342 10, /* bitsize */
1343 FALSE, /* pc_relative */
1344 0, /* bitpos */
1345 complain_overflow_dont,/* complain_on_overflow */
1346 bfd_elf_generic_reloc, /* special_function */
1347 "R_NDS32_LO12S2_DP_RELA",/* name */
1348 FALSE, /* partial_inplace */
1349 0x000003ff, /* src_mask */
1350 0x000003ff, /* dst_mask */
1351 FALSE), /* pcrel_offset */
1352
1353 /* Lower 12 bits of address. */
1354 HOWTO2 (R_NDS32_LO12S2_SP_RELA,/* type */
1355 2, /* rightshift */
1356 2, /* size (0 = byte, 1 = short, 2 = long) */
1357 10, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_dont,/* complain_on_overflow */
1361 bfd_elf_generic_reloc, /* special_function */
1362 "R_NDS32_LO12S2_SP_RELA",/* name */
1363 FALSE, /* partial_inplace */
1364 0x000003ff, /* src_mask */
1365 0x000003ff, /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367 /* Lower 12 bits of address. Special identity for or case. */
1368 HOWTO2 (R_NDS32_LO12S0_ORI_RELA,/* type */
1369 0, /* rightshift */
1370 2, /* size (0 = byte, 1 = short, 2 = long) */
1371 12, /* bitsize */
1372 FALSE, /* pc_relative */
1373 0, /* bitpos */
1374 complain_overflow_dont,/* complain_on_overflow */
1375 bfd_elf_generic_reloc, /* special_function */
1376 "R_NDS32_LO12S0_ORI_RELA",/* name */
1377 FALSE, /* partial_inplace */
1378 0x00000fff, /* src_mask */
1379 0x00000fff, /* dst_mask */
1380 FALSE), /* pcrel_offset */
1381 /* Small data area 19 bits offset. */
1382 HOWTO2 (R_NDS32_SDA16S3_RELA, /* type */
1383 3, /* rightshift */
1384 2, /* size (0 = byte, 1 = short, 2 = long) */
1385 16, /* bitsize */
1386 FALSE, /* pc_relative */
1387 0, /* bitpos */
1388 complain_overflow_signed,/* complain_on_overflow */
1389 bfd_elf_generic_reloc, /* special_function */
1390 "R_NDS32_SDA16S3_RELA",/* name */
1391 FALSE, /* partial_inplace */
1392 0x0000ffff, /* src_mask */
1393 0x0000ffff, /* dst_mask */
1394 FALSE), /* pcrel_offset */
1395
1396 /* Small data area 15 bits offset. */
1397 HOWTO2 (R_NDS32_SDA17S2_RELA, /* type */
1398 2, /* rightshift */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1400 17, /* bitsize */
1401 FALSE, /* pc_relative */
1402 0, /* bitpos */
1403 complain_overflow_signed,/* complain_on_overflow */
1404 bfd_elf_generic_reloc, /* special_function */
1405 "R_NDS32_SDA17S2_RELA",/* name */
1406 FALSE, /* partial_inplace */
1407 0x0001ffff, /* src_mask */
1408 0x0001ffff, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1410
1411 HOWTO2 (R_NDS32_SDA18S1_RELA, /* type */
1412 1, /* rightshift */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 18, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_signed,/* complain_on_overflow */
1418 bfd_elf_generic_reloc, /* special_function */
1419 "R_NDS32_SDA18S1_RELA",/* name */
1420 FALSE, /* partial_inplace */
1421 0x0003ffff, /* src_mask */
1422 0x0003ffff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 HOWTO2 (R_NDS32_SDA19S0_RELA, /* type */
1426 0, /* rightshift */
1427 2, /* size (0 = byte, 1 = short, 2 = long) */
1428 19, /* bitsize */
1429 FALSE, /* pc_relative */
1430 0, /* bitpos */
1431 complain_overflow_signed,/* complain_on_overflow */
1432 bfd_elf_generic_reloc, /* special_function */
1433 "R_NDS32_SDA19S0_RELA",/* name */
1434 FALSE, /* partial_inplace */
1435 0x0007ffff, /* src_mask */
1436 0x0007ffff, /* dst_mask */
1437 FALSE), /* pcrel_offset */
1438 HOWTO2 (R_NDS32_DWARF2_OP1_RELA,/* type */
1439 0, /* rightshift */
1440 0, /* size (0 = byte, 1 = short, 2 = long) */
1441 8, /* bitsize */
1442 FALSE, /* pc_relative */
1443 0, /* bitpos */
1444 complain_overflow_dont,/* complain_on_overflow */
1445 nds32_elf_ignore_reloc,/* special_function */
1446 "R_NDS32_DWARF2_OP1_RELA",/* name */
1447 FALSE, /* partial_inplace */
1448 0xff, /* src_mask */
1449 0xff, /* dst_mask */
1450 FALSE), /* pcrel_offset */
1451 HOWTO2 (R_NDS32_DWARF2_OP2_RELA,/* type */
1452 0, /* rightshift */
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 16, /* bitsize */
1455 FALSE, /* pc_relative */
1456 0, /* bitpos */
1457 complain_overflow_dont,/* complain_on_overflow */
1458 nds32_elf_ignore_reloc,/* special_function */
1459 "R_NDS32_DWARF2_OP2_RELA",/* name */
1460 FALSE, /* partial_inplace */
1461 0xffff, /* src_mask */
1462 0xffff, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1464 HOWTO2 (R_NDS32_DWARF2_LEB_RELA,/* type */
1465 0, /* rightshift */
1466 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 32, /* bitsize */
1468 FALSE, /* pc_relative */
1469 0, /* bitpos */
1470 complain_overflow_dont,/* complain_on_overflow */
1471 nds32_elf_ignore_reloc,/* special_function */
1472 "R_NDS32_DWARF2_LEB_RELA",/* name */
1473 FALSE, /* partial_inplace */
1474 0xffffffff, /* src_mask */
1475 0xffffffff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1477 HOWTO2 (R_NDS32_UPDATE_TA_RELA,/* type */
1478 0, /* rightshift */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_dont,/* complain_on_overflow */
1484 nds32_elf_ignore_reloc,/* special_function */
1485 "R_NDS32_UPDATE_TA_RELA",/* name */
1486 FALSE, /* partial_inplace */
1487 0xffff, /* src_mask */
1488 0xffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
1491 entry for the symbol. */
1492 HOWTO2 (R_NDS32_9_PLTREL, /* type */
1493 1, /* rightshift */
1494 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 8, /* bitsize */
1496 TRUE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_signed,/* complain_on_overflow */
1499 bfd_elf_generic_reloc, /* special_function */
1500 "R_NDS32_9_PLTREL", /* name */
1501 FALSE, /* partial_inplace */
1502 0xff, /* src_mask */
1503 0xff, /* dst_mask */
1504 TRUE), /* pcrel_offset */
1505 /* Low 20 bits of PLT symbol offset relative to GOT (GP). */
1506 HOWTO2 (R_NDS32_PLT_GOTREL_LO20,/* type */
1507 0, /* rightshift */
1508 2, /* size (0 = byte, 1 = short, 2 = long) */
1509 20, /* bitsize */
1510 FALSE, /* pc_relative */
1511 0, /* bitpos */
1512 complain_overflow_dont,/* complain_on_overflow */
1513 bfd_elf_generic_reloc, /* special_function */
1514 "R_NDS32_PLT_GOTREL_LO20",/* name */
1515 FALSE, /* partial_inplace */
1516 0x000fffff, /* src_mask */
1517 0x000fffff, /* dst_mask */
1518 FALSE), /* pcrel_offset */
1519 /* low 15 bits of PLT symbol offset relative to GOT (GP) */
1520 HOWTO2 (R_NDS32_PLT_GOTREL_LO15,/* type */
1521 0, /* rightshift */
1522 2, /* size (0 = byte, 1 = short, 2 = long) */
1523 15, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_dont,/* complain_on_overflow */
1527 bfd_elf_generic_reloc, /* special_function */
1528 "R_NDS32_PLT_GOTREL_LO15",/* name */
1529 FALSE, /* partial_inplace */
1530 0x00007fff, /* src_mask */
1531 0x00007fff, /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533 /* Low 19 bits of PLT symbol offset relative to GOT (GP). */
1534 HOWTO2 (R_NDS32_PLT_GOTREL_LO19,/* type */
1535 0, /* rightshift */
1536 2, /* size (0 = byte, 1 = short, 2 = long) */
1537 19, /* bitsize */
1538 FALSE, /* pc_relative */
1539 0, /* bitpos */
1540 complain_overflow_dont,/* complain_on_overflow */
1541 bfd_elf_generic_reloc, /* special_function */
1542 "R_NDS32_PLT_GOTREL_LO19",/* name */
1543 FALSE, /* partial_inplace */
1544 0x0007ffff, /* src_mask */
1545 0x0007ffff, /* dst_mask */
1546 FALSE), /* pcrel_offset */
1547 HOWTO2 (R_NDS32_GOT_LO15, /* type */
1548 0, /* rightshift */
1549 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 15, /* bitsize */
1551 FALSE, /* pc_relative */
1552 0, /* bitpos */
1553 complain_overflow_dont,/* complain_on_overflow */
1554 bfd_elf_generic_reloc, /* special_function */
1555 "R_NDS32_GOT_LO15", /* name */
1556 FALSE, /* partial_inplace */
1557 0x00007fff, /* src_mask */
1558 0x00007fff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
1560 HOWTO2 (R_NDS32_GOT_LO19, /* type */
1561 0, /* rightshift */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 19, /* bitsize */
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
1566 complain_overflow_dont,/* complain_on_overflow */
1567 bfd_elf_generic_reloc, /* special_function */
1568 "R_NDS32_GOT_LO19", /* name */
1569 FALSE, /* partial_inplace */
1570 0x0007ffff, /* src_mask */
1571 0x0007ffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1573 HOWTO2 (R_NDS32_GOTOFF_LO15, /* type */
1574 0, /* rightshift */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1576 15, /* bitsize */
1577 FALSE, /* pc_relative */
1578 0, /* bitpos */
1579 complain_overflow_dont,/* complain_on_overflow */
1580 bfd_elf_generic_reloc, /* special_function */
1581 "R_NDS32_GOTOFF_LO15", /* name */
1582 FALSE, /* partial_inplace */
1583 0x00007fff, /* src_mask */
1584 0x00007fff, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1586 HOWTO2 (R_NDS32_GOTOFF_LO19, /* type */
1587 0, /* rightshift */
1588 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 19, /* bitsize */
1590 FALSE, /* pc_relative */
1591 0, /* bitpos */
1592 complain_overflow_dont,/* complain_on_overflow */
1593 bfd_elf_generic_reloc, /* special_function */
1594 "R_NDS32_GOTOFF_LO19", /* name */
1595 FALSE, /* partial_inplace */
1596 0x0007ffff, /* src_mask */
1597 0x0007ffff, /* dst_mask */
1598 FALSE), /* pcrel_offset */
1599 /* GOT 15 bits offset. */
1600 HOWTO2 (R_NDS32_GOT15S2_RELA, /* type */
1601 2, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 15, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_signed,/* complain_on_overflow */
1607 bfd_elf_generic_reloc, /* special_function */
1608 "R_NDS32_GOT15S2_RELA",/* name */
1609 FALSE, /* partial_inplace */
1610 0x00007fff, /* src_mask */
1611 0x00007fff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613 /* GOT 17 bits offset. */
1614 HOWTO2 (R_NDS32_GOT17S2_RELA, /* type */
1615 2, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1617 17, /* bitsize */
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
1620 complain_overflow_signed,/* complain_on_overflow */
1621 bfd_elf_generic_reloc, /* special_function */
1622 "R_NDS32_GOT17S2_RELA",/* name */
1623 FALSE, /* partial_inplace */
1624 0x0001ffff, /* src_mask */
1625 0x0001ffff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627 /* A 5 bit address. */
1628 HOWTO2 (R_NDS32_5_RELA, /* type */
1629 0, /* rightshift */
1630 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 5, /* bitsize */
1632 FALSE, /* pc_relative */
1633 0, /* bitpos */
1634 complain_overflow_signed,/* complain_on_overflow */
1635 bfd_elf_generic_reloc, /* special_function */
1636 "R_NDS32_5_RELA", /* name */
1637 FALSE, /* partial_inplace */
1638 0x1f, /* src_mask */
1639 0x1f, /* dst_mask */
1640 FALSE), /* pcrel_offset */
1641 HOWTO2 (R_NDS32_10_UPCREL_RELA,/* type */
1642 1, /* rightshift */
1643 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 9, /* bitsize */
1645 TRUE, /* pc_relative */
1646 0, /* bitpos */
1647 complain_overflow_unsigned,/* complain_on_overflow */
1648 bfd_elf_generic_reloc, /* special_function */
1649 "R_NDS32_10_UPCREL_RELA",/* name */
1650 FALSE, /* partial_inplace */
1651 0x1ff, /* src_mask */
1652 0x1ff, /* dst_mask */
1653 TRUE), /* pcrel_offset */
1654 HOWTO2 (R_NDS32_SDA_FP7U2_RELA,/* type */
1655 2, /* rightshift */
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 7, /* bitsize */
1658 FALSE, /* pc_relative */
1659 0, /* bitpos */
1660 complain_overflow_unsigned,/* complain_on_overflow */
1661 bfd_elf_generic_reloc, /* special_function */
1662 "R_NDS32_SDA_FP7U2_RELA",/* name */
1663 FALSE, /* partial_inplace */
1664 0x0000007f, /* src_mask */
1665 0x0000007f, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1667 HOWTO2 (R_NDS32_WORD_9_PCREL_RELA,/* type */
1668 1, /* rightshift */
1669 2, /* size (0 = byte, 1 = short, 2 = long) */
1670 8, /* bitsize */
1671 TRUE, /* pc_relative */
1672 0, /* bitpos */
1673 complain_overflow_signed,/* complain_on_overflow */
1674 bfd_elf_generic_reloc, /* special_function */
1675 "R_NDS32_WORD_9_PCREL_RELA",/* name */
1676 FALSE, /* partial_inplace */
1677 0xff, /* src_mask */
1678 0xff, /* dst_mask */
1679 TRUE), /* pcrel_offset */
1680 HOWTO2 (R_NDS32_25_ABS_RELA, /* type */
1681 1, /* rightshift */
1682 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 24, /* bitsize */
1684 FALSE, /* pc_relative */
1685 0, /* bitpos */
1686 complain_overflow_dont,/* complain_on_overflow */
1687 bfd_elf_generic_reloc, /* special_function */
1688 "R_NDS32_25_ABS_RELA", /* name */
1689 FALSE, /* partial_inplace */
1690 0xffffff, /* src_mask */
1691 0xffffff, /* dst_mask */
1692 FALSE), /* pcrel_offset */
1693
1694 /* A relative 17 bit relocation for ifc, right shifted by 1. */
1695 HOWTO2 (R_NDS32_17IFC_PCREL_RELA,/* type */
1696 1, /* rightshift */
1697 2, /* size (0 = byte, 1 = short, 2 = long) */
1698 16, /* bitsize */
1699 TRUE, /* pc_relative */
1700 0, /* bitpos */
1701 complain_overflow_signed,/* complain_on_overflow */
1702 bfd_elf_generic_reloc, /* special_function */
1703 "R_NDS32_17IFC_PCREL_RELA",/* name */
1704 FALSE, /* partial_inplace */
1705 0xffff, /* src_mask */
1706 0xffff, /* dst_mask */
1707 TRUE), /* pcrel_offset */
1708
1709 /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */
1710 HOWTO2 (R_NDS32_10IFCU_PCREL_RELA,/* type */
1711 1, /* rightshift */
1712 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 9, /* bitsize */
1714 TRUE, /* pc_relative */
1715 0, /* bitpos */
1716 complain_overflow_unsigned,/* complain_on_overflow */
1717 bfd_elf_generic_reloc, /* special_function */
1718 "R_NDS32_10IFCU_PCREL_RELA",/* name */
1719 FALSE, /* partial_inplace */
1720 0x1ff, /* src_mask */
1721 0x1ff, /* dst_mask */
1722 TRUE), /* pcrel_offset */
1723
1724 /* Like R_NDS32_HI20, but referring to the TLS LE entry for the symbol. */
1725 HOWTO2 (R_NDS32_TLS_LE_HI20, /* type */
1726 12, /* rightshift */
1727 2, /* size (0 = byte, 1 = short, 2 = long) */
1728 20, /* bitsize */
1729 FALSE, /* pc_relative */
1730 0, /* bitpos */
1731 complain_overflow_dont,/* complain_on_overflow */
1732 bfd_elf_generic_reloc, /* special_function */
1733 "R_NDS32_TLS_LE_HI20", /* name */
1734 FALSE, /* partial_inplace */
1735 0x000fffff, /* src_mask */
1736 0x000fffff, /* dst_mask */
1737 FALSE), /* pcrel_offset */
1738
1739 HOWTO2 (R_NDS32_TLS_LE_LO12, /* type */
1740 0, /* rightshift */
1741 2, /* size (0 = byte, 1 = short, 2 = long) */
1742 12, /* bitsize */
1743 FALSE, /* pc_relative */
1744 0, /* bitpos */
1745 complain_overflow_dont,/* complain_on_overflow */
1746 bfd_elf_generic_reloc, /* special_function */
1747 "R_NDS32_TLS_LE_LO12", /* name */
1748 FALSE, /* partial_inplace */
1749 0x00000fff, /* src_mask */
1750 0x00000fff, /* dst_mask */
1751 FALSE), /* pcrel_offset */
1752
1753 /* Like R_NDS32_HI20, but referring to the TLS IE entry for the symbol. */
1754 HOWTO2 (R_NDS32_TLS_IE_HI20, /* type */
1755 12, /* rightshift */
1756 2, /* size (0 = byte, 1 = short, 2 = long) */
1757 20, /* bitsize */
1758 FALSE, /* pc_relative */
1759 0, /* bitpos */
1760 complain_overflow_dont,/* complain_on_overflow */
1761 bfd_elf_generic_reloc, /* special_function */
1762 "R_NDS32_TLS_IE_HI20", /* name */
1763 FALSE, /* partial_inplace */
1764 0x000fffff, /* src_mask */
1765 0x000fffff, /* dst_mask */
1766 FALSE), /* pcrel_offset */
1767
1768 HOWTO2 (R_NDS32_TLS_IE_LO12S2,/* type */
1769 2, /* rightshift */
1770 2, /* size (0 = byte, 1 = short, 2 = long) */
1771 10, /* bitsize */
1772 FALSE, /* pc_relative */
1773 0, /* bitpos */
1774 complain_overflow_dont,/* complain_on_overflow */
1775 bfd_elf_generic_reloc, /* special_function */
1776 "R_NDS32_TLS_IE_LO12S2",/* name */
1777 FALSE, /* partial_inplace */
1778 0x000003ff, /* src_mask */
1779 0x000003ff, /* dst_mask */
1780 FALSE), /* pcrel_offset */
1781
1782 /* TLS LE TP offset relocation */
1783 HOWTO2 (R_NDS32_TLS_TPOFF, /* type */
1784 0, /* rightshift */
1785 2, /* size (0 = byte, 1 = short, 2 = long) */
1786 32, /* bitsize */
1787 FALSE, /* pc_relative */
1788 0, /* bitpos */
1789 complain_overflow_bitfield,/* complain_on_overflow */
1790 bfd_elf_generic_reloc, /* special_function */
1791 "R_NDS32_TLS_TPOFF", /* name */
1792 FALSE, /* partial_inplace */
1793 0xffffffff, /* src_mask */
1794 0xffffffff, /* dst_mask */
1795 FALSE), /* pcrel_offset */
1796
1797 /* A 20 bit address. */
1798 HOWTO2 (R_NDS32_TLS_LE_20, /* type */
1799 0, /* rightshift */
1800 2, /* size (0 = byte, 1 = short, 2 = long) */
1801 20, /* bitsize */
1802 FALSE, /* pc_relative */
1803 0, /* bitpos */
1804 complain_overflow_signed,/* complain_on_overflow */
1805 bfd_elf_generic_reloc, /* special_function */
1806 "R_NDS32_TLS_LE_20", /* name */
1807 FALSE, /* partial_inplace */
1808 0xfffff, /* src_mask */
1809 0xfffff, /* dst_mask */
1810 FALSE), /* pcrel_offset */
1811
1812 HOWTO2 (R_NDS32_TLS_LE_15S0, /* type */
1813 0, /* rightshift */
1814 2, /* size (0 = byte, 1 = short, 2 = long) */
1815 15, /* bitsize */
1816 FALSE, /* pc_relative */
1817 0, /* bitpos */
1818 complain_overflow_signed,/* complain_on_overflow */
1819 bfd_elf_generic_reloc, /* special_function */
1820 "R_NDS32_TLS_LE_15S0", /* name */
1821 FALSE, /* partial_inplace */
1822 0x7fff, /* src_mask */
1823 0x7fff, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1825 HOWTO2 (R_NDS32_TLS_LE_15S1, /* type */
1826 1, /* rightshift */
1827 2, /* size (0 = byte, 1 = short, 2 = long) */
1828 15, /* bitsize */
1829 FALSE, /* pc_relative */
1830 0, /* bitpos */
1831 complain_overflow_signed,/* complain_on_overflow */
1832 bfd_elf_generic_reloc, /* special_function */
1833 "R_NDS32_TLS_LE_15S1", /* name */
1834 FALSE, /* partial_inplace */
1835 0x7fff, /* src_mask */
1836 0x7fff, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1838 HOWTO2 (R_NDS32_TLS_LE_15S2, /* type */
1839 2, /* rightshift */
1840 2, /* size (0 = byte, 1 = short, 2 = long) */
1841 15, /* bitsize */
1842 FALSE, /* pc_relative */
1843 0, /* bitpos */
1844 complain_overflow_signed,/* complain_on_overflow */
1845 bfd_elf_generic_reloc, /* special_function */
1846 "R_NDS32_TLS_LE_15S2", /* name */
1847 FALSE, /* partial_inplace */
1848 0x7fff, /* src_mask */
1849 0x7fff, /* dst_mask */
1850 FALSE), /* pcrel_offset */
1851
1852 /* Relax hint for unconditional call sequence */
1853 HOWTO2 (R_NDS32_LONGCALL4, /* type */
1854 0, /* rightshift */
1855 2, /* size (0 = byte, 1 = short, 2 = long) */
1856 32, /* bitsize */
1857 FALSE, /* pc_relative */
1858 0, /* bitpos */
1859 complain_overflow_dont,/* complain_on_overflow */
1860 nds32_elf_ignore_reloc,/* special_function */
1861 "R_NDS32_LONGCALL4", /* name */
1862 FALSE, /* partial_inplace */
1863 0xffffffff, /* src_mask */
1864 0xffffffff, /* dst_mask */
1865 FALSE), /* pcrel_offset */
1866
1867 /* Relax hint for conditional call sequence. */
1868 HOWTO2 (R_NDS32_LONGCALL5, /* type */
1869 0, /* rightshift */
1870 2, /* size (0 = byte, 1 = short, 2 = long) */
1871 32, /* bitsize */
1872 FALSE, /* pc_relative */
1873 0, /* bitpos */
1874 complain_overflow_dont,/* complain_on_overflow */
1875 nds32_elf_ignore_reloc,/* special_function */
1876 "R_NDS32_LONGCALL5", /* name */
1877 FALSE, /* partial_inplace */
1878 0xffffffff, /* src_mask */
1879 0xffffffff, /* dst_mask */
1880 FALSE), /* pcrel_offset */
1881
1882 /* Relax hint for conditional call sequence. */
1883 HOWTO2 (R_NDS32_LONGCALL6, /* type */
1884 0, /* rightshift */
1885 2, /* size (0 = byte, 1 = short, 2 = long) */
1886 32, /* bitsize */
1887 FALSE, /* pc_relative */
1888 0, /* bitpos */
1889 complain_overflow_dont,/* complain_on_overflow */
1890 nds32_elf_ignore_reloc,/* special_function */
1891 "R_NDS32_LONGCALL6", /* name */
1892 FALSE, /* partial_inplace */
1893 0xffffffff, /* src_mask */
1894 0xffffffff, /* dst_mask */
1895 FALSE), /* pcrel_offset */
1896
1897 /* Relax hint for unconditional branch sequence. */
1898 HOWTO2 (R_NDS32_LONGJUMP4, /* type */
1899 0, /* rightshift */
1900 2, /* size (0 = byte, 1 = short, 2 = long) */
1901 32, /* bitsize */
1902 FALSE, /* pc_relative */
1903 0, /* bitpos */
1904 complain_overflow_dont,/* complain_on_overflow */
1905 nds32_elf_ignore_reloc,/* special_function */
1906 "R_NDS32_LONGJUMP4", /* name */
1907 FALSE, /* partial_inplace */
1908 0xffffffff, /* src_mask */
1909 0xffffffff, /* dst_mask */
1910 FALSE), /* pcrel_offset */
1911
1912 /* Relax hint for conditional branch sequence. */
1913 HOWTO2 (R_NDS32_LONGJUMP5, /* type */
1914 0, /* rightshift */
1915 2, /* size (0 = byte, 1 = short, 2 = long) */
1916 32, /* bitsize */
1917 FALSE, /* pc_relative */
1918 0, /* bitpos */
1919 complain_overflow_dont,/* complain_on_overflow */
1920 nds32_elf_ignore_reloc,/* special_function */
1921 "R_NDS32_LONGJUMP5", /* name */
1922 FALSE, /* partial_inplace */
1923 0xffffffff, /* src_mask */
1924 0xffffffff, /* dst_mask */
1925 FALSE), /* pcrel_offset */
1926
1927 /* Relax hint for conditional branch sequence. */
1928 HOWTO2 (R_NDS32_LONGJUMP6, /* type */
1929 0, /* rightshift */
1930 2, /* size (0 = byte, 1 = short, 2 = long) */
1931 32, /* bitsize */
1932 FALSE, /* pc_relative */
1933 0, /* bitpos */
1934 complain_overflow_dont,/* complain_on_overflow */
1935 nds32_elf_ignore_reloc,/* special_function */
1936 "R_NDS32_LONGJUMP6", /* name */
1937 FALSE, /* partial_inplace */
1938 0xffffffff, /* src_mask */
1939 0xffffffff, /* dst_mask */
1940 FALSE), /* pcrel_offset */
1941
1942 /* Relax hint for conditional branch sequence. */
1943 HOWTO2 (R_NDS32_LONGJUMP7, /* type */
1944 0, /* rightshift */
1945 2, /* size (0 = byte, 1 = short, 2 = long) */
1946 32, /* bitsize */
1947 FALSE, /* pc_relative */
1948 0, /* bitpos */
1949 complain_overflow_dont,/* complain_on_overflow */
1950 nds32_elf_ignore_reloc,/* special_function */
1951 "R_NDS32_LONGJUMP7", /* name */
1952 FALSE, /* partial_inplace */
1953 0xffffffff, /* src_mask */
1954 0xffffffff, /* dst_mask */
1955 FALSE), /* pcrel_offset */
1956
1957 HOWTO2 (R_NDS32_TLS_IE_LO12, /* type */
1958 0, /* rightshift */
1959 2, /* size (0 = byte, 1 = short, 2 = long) */
1960 12, /* bitsize */
1961 FALSE, /* pc_relative */
1962 0, /* bitpos */
1963 complain_overflow_dont,/* complain_on_overflow */
1964 bfd_elf_generic_reloc, /* special_function */
1965 "R_NDS32_TLS_IE_LO12", /* name */
1966 FALSE, /* partial_inplace */
1967 0x00000fff, /* src_mask */
1968 0x00000fff, /* dst_mask */
1969 FALSE), /* pcrel_offset */
1970
1971 /* Like R_NDS32_HI20, but referring to the TLS IE (PIE)
1972 entry for the symbol. */
1973 HOWTO2 (R_NDS32_TLS_IEGP_HI20,/* type */
1974 12, /* rightshift */
1975 2, /* size (0 = byte, 1 = short, 2 = long) */
1976 20, /* bitsize */
1977 FALSE, /* pc_relative */
1978 0, /* bitpos */
1979 complain_overflow_dont,/* complain_on_overflow */
1980 bfd_elf_generic_reloc, /* special_function */
1981 "R_NDS32_TLS_IEGP_HI20",/* name */
1982 FALSE, /* partial_inplace */
1983 0x000fffff, /* src_mask */
1984 0x000fffff, /* dst_mask */
1985 FALSE), /* pcrel_offset */
1986
1987 HOWTO2 (R_NDS32_TLS_IEGP_LO12,/* type */
1988 0, /* rightshift */
1989 2, /* size (0 = byte, 1 = short, 2 = long) */
1990 12, /* bitsize */
1991 FALSE, /* pc_relative */
1992 0, /* bitpos */
1993 complain_overflow_dont,/* complain_on_overflow */
1994 bfd_elf_generic_reloc, /* special_function */
1995 "R_NDS32_TLS_IEGP_LO12",/* name */
1996 FALSE, /* partial_inplace */
1997 0x00000fff, /* src_mask */
1998 0x00000fff, /* dst_mask */
1999 FALSE), /* pcrel_offset */
2000
2001 HOWTO2 (R_NDS32_TLS_IEGP_LO12S2,/* type */
2002 2, /* rightshift */
2003 2, /* size (0 = byte, 1 = short, 2 = long) */
2004 10, /* bitsize */
2005 FALSE, /* pc_relative */
2006 0, /* bitpos */
2007 complain_overflow_dont,/* complain_on_overflow */
2008 bfd_elf_generic_reloc, /* special_function */
2009 "R_NDS32_TLS_IEGP_LO12S2",/* name */
2010 FALSE, /* partial_inplace */
2011 0x000003ff, /* src_mask */
2012 0x000003ff, /* dst_mask */
2013 FALSE), /* pcrel_offset */
2014
2015 /* TLS description relocation */
2016 HOWTO2 (R_NDS32_TLS_DESC, /* type */
2017 12, /* rightshift */
2018 2, /* size (0 = byte, 1 = short, 2 = long) */
2019 20, /* bitsize */
2020 FALSE, /* pc_relative */
2021 0, /* bitpos */
2022 complain_overflow_dont,/* complain_on_overflow */
2023 nds32_elf_hi20_reloc, /* special_function */
2024 "R_NDS32_TLS_DESC_HI20",/* name */
2025 FALSE, /* partial_inplace */
2026 0x000fffff, /* src_mask */
2027 0x000fffff, /* dst_mask */
2028 FALSE), /* pcrel_offset */
2029
2030 /* TLS GD/LD description offset high part. */
2031 HOWTO2 (R_NDS32_TLS_DESC_HI20,/* type */
2032 12, /* rightshift */
2033 2, /* size (0 = byte, 1 = short, 2 = long) */
2034 20, /* bitsize */
2035 FALSE, /* pc_relative */
2036 0, /* bitpos */
2037 complain_overflow_dont,/* complain_on_overflow */
2038 nds32_elf_hi20_reloc, /* special_function */
2039 "R_NDS32_TLS_DESC_HI20",/* name */
2040 FALSE, /* partial_inplace */
2041 0x000fffff, /* src_mask */
2042 0x000fffff, /* dst_mask */
2043 FALSE), /* pcrel_offset */
2044
2045 /* TLS GD/LD description offset low part. */
2046 HOWTO2 (R_NDS32_TLS_DESC_LO12,/* type */
2047 0, /* rightshift */
2048 2, /* size (0 = byte, 1 = short, 2 = long) */
2049 12, /* bitsize */
2050 FALSE, /* pc_relative */
2051 0, /* bitpos */
2052 complain_overflow_dont,/* complain_on_overflow */
2053 nds32_elf_lo12_reloc, /* special_function */
2054 "R_NDS32_TLS_DESC_LO12",/* name */
2055 FALSE, /* partial_inplace */
2056 0x00000fff, /* src_mask */
2057 0x00000fff, /* dst_mask */
2058 FALSE), /* pcrel_offset */
2059
2060 /* TLS GD/LD description offset set (movi). */
2061 HOWTO2 (R_NDS32_TLS_DESC_20, /* type */
2062 0, /* rightshift */
2063 2, /* size (0 = byte, 1 = short, 2 = long) */
2064 20, /* bitsize */
2065 FALSE, /* pc_relative */
2066 0, /* bitpos */
2067 complain_overflow_signed,/* complain_on_overflow */
2068 bfd_elf_generic_reloc, /* special_function */
2069 "R_NDS32_TLS_DESC_20", /* name */
2070 FALSE, /* partial_inplace */
2071 0x000fffff, /* src_mask */
2072 0x000fffff, /* dst_mask */
2073 FALSE), /* pcrel_offset */
2074
2075 /* TLS GD/LD description offset set (lwi.gp). */
2076 HOWTO2 (R_NDS32_TLS_DESC_SDA17S2,/* type */
2077 2, /* rightshift */
2078 2, /* size (0 = byte, 1 = short, 2 = long) */
2079 17, /* bitsize */
2080 FALSE, /* pc_relative */
2081 0, /* bitpos */
2082 complain_overflow_signed,/* complain_on_overflow */
2083 bfd_elf_generic_reloc, /* special_function */
2084 "R_NDS32_TLS_DESC_SDA17S2",/* name */
2085 FALSE, /* partial_inplace */
2086 0x0001ffff, /* src_mask */
2087 0x0001ffff, /* dst_mask */
2088 FALSE), /* pcrel_offset */
2089 };
2090
2091 /* Relocations used for relaxation. */
2092 #define HOWTO3(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
2093 [C-R_NDS32_RELAX_ENTRY] = HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC)
2094
2095 static reloc_howto_type nds32_elf_relax_howto_table[] = {
2096 HOWTO3 (R_NDS32_RELAX_ENTRY, /* type */
2097 0, /* rightshift */
2098 2, /* size (0 = byte, 1 = short, 2 = long) */
2099 32, /* bitsize */
2100 FALSE, /* pc_relative */
2101 0, /* bitpos */
2102 complain_overflow_dont,/* complain_on_overflow */
2103 nds32_elf_ignore_reloc,/* special_function */
2104 "R_NDS32_RELAX_ENTRY", /* name */
2105 FALSE, /* partial_inplace */
2106 0xffffffff, /* src_mask */
2107 0xffffffff, /* dst_mask */
2108 FALSE), /* pcrel_offset */
2109 HOWTO3 (R_NDS32_GOT_SUFF, /* type */
2110 0, /* rightshift */
2111 2, /* size (0 = byte, 1 = short, 2 = long) */
2112 32, /* bitsize */
2113 FALSE, /* pc_relative */
2114 0, /* bitpos */
2115 complain_overflow_dont,/* complain_on_overflow */
2116 nds32_elf_ignore_reloc,/* special_function */
2117 "R_NDS32_GOT_SUFF", /* name */
2118 FALSE, /* partial_inplace */
2119 0xffffffff, /* src_mask */
2120 0xffffffff, /* dst_mask */
2121 FALSE), /* pcrel_offset */
2122 HOWTO3 (R_NDS32_GOTOFF_SUFF, /* type */
2123 0, /* rightshift */
2124 2, /* size (0 = byte, 1 = short, 2 = long) */
2125 32, /* bitsize */
2126 FALSE, /* pc_relative */
2127 0, /* bitpos */
2128 complain_overflow_bitfield,/* complain_on_overflow */
2129 nds32_elf_ignore_reloc,/* special_function */
2130 "R_NDS32_GOTOFF_SUFF", /* name */
2131 FALSE, /* partial_inplace */
2132 0xffffffff, /* src_mask */
2133 0xffffffff, /* dst_mask */
2134 FALSE), /* pcrel_offset */
2135 HOWTO3 (R_NDS32_PLT_GOT_SUFF, /* type */
2136 0, /* rightshift */
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2138 32, /* bitsize */
2139 FALSE, /* pc_relative */
2140 0, /* bitpos */
2141 complain_overflow_dont,/* complain_on_overflow */
2142 nds32_elf_ignore_reloc,/* special_function */
2143 "R_NDS32_PLT_GOT_SUFF",/* name */
2144 FALSE, /* partial_inplace */
2145 0xffffffff, /* src_mask */
2146 0xffffffff, /* dst_mask */
2147 FALSE), /* pcrel_offset */
2148 HOWTO3 (R_NDS32_MULCALL_SUFF, /* type */
2149 0, /* rightshift */
2150 2, /* size (0 = byte, 1 = short, 2 = long) */
2151 32, /* bitsize */
2152 FALSE, /* pc_relative */
2153 0, /* bitpos */
2154 complain_overflow_dont,/* complain_on_overflow */
2155 nds32_elf_ignore_reloc,/* special_function */
2156 "R_NDS32_MULCALL_SUFF",/* name */
2157 FALSE, /* partial_inplace */
2158 0xffffffff, /* src_mask */
2159 0xffffffff, /* dst_mask */
2160 FALSE), /* pcrel_offset */
2161 HOWTO3 (R_NDS32_PTR, /* type */
2162 0, /* rightshift */
2163 2, /* size (0 = byte, 1 = short, 2 = long) */
2164 32, /* bitsize */
2165 FALSE, /* pc_relative */
2166 0, /* bitpos */
2167 complain_overflow_dont,/* complain_on_overflow */
2168 nds32_elf_ignore_reloc,/* special_function */
2169 "R_NDS32_PTR", /* name */
2170 FALSE, /* partial_inplace */
2171 0xffffffff, /* src_mask */
2172 0xffffffff, /* dst_mask */
2173 FALSE), /* pcrel_offset */
2174 HOWTO3 (R_NDS32_PTR_COUNT, /* type */
2175 0, /* rightshift */
2176 2, /* size (0 = byte, 1 = short, 2 = long) */
2177 32, /* bitsize */
2178 FALSE, /* pc_relative */
2179 0, /* bitpos */
2180 complain_overflow_dont,/* complain_on_overflow */
2181 nds32_elf_ignore_reloc,/* special_function */
2182 "R_NDS32_PTR_COUNT", /* name */
2183 FALSE, /* partial_inplace */
2184 0xffffffff, /* src_mask */
2185 0xffffffff, /* dst_mask */
2186 FALSE), /* pcrel_offset */
2187 HOWTO3 (R_NDS32_PTR_RESOLVED, /* type */
2188 0, /* rightshift */
2189 2, /* size (0 = byte, 1 = short, 2 = long) */
2190 32, /* bitsize */
2191 FALSE, /* pc_relative */
2192 0, /* bitpos */
2193 complain_overflow_dont,/* complain_on_overflow */
2194 nds32_elf_ignore_reloc,/* special_function */
2195 "R_NDS32_PTR_RESOLVED",/* name */
2196 FALSE, /* partial_inplace */
2197 0xffffffff, /* src_mask */
2198 0xffffffff, /* dst_mask */
2199 FALSE), /* pcrel_offset */
2200 HOWTO3 (R_NDS32_PLTBLOCK, /* type */
2201 0, /* rightshift */
2202 2, /* size (0 = byte, 1 = short, 2 = long) */
2203 32, /* bitsize */
2204 FALSE, /* pc_relative */
2205 0, /* bitpos */
2206 complain_overflow_dont,/* complain_on_overflow */
2207 nds32_elf_ignore_reloc,/* special_function */
2208 "R_NDS32_PLTBLOCK", /* name */
2209 FALSE, /* partial_inplace */
2210 0xffffffff, /* src_mask */
2211 0xffffffff, /* dst_mask */
2212 FALSE), /* pcrel_offset */
2213 HOWTO3 (R_NDS32_RELAX_REGION_BEGIN,/* type */
2214 0, /* rightshift */
2215 2, /* size (0 = byte, 1 = short, 2 = long) */
2216 32, /* bitsize */
2217 FALSE, /* pc_relative */
2218 0, /* bitpos */
2219 complain_overflow_dont,/* complain_on_overflow */
2220 nds32_elf_ignore_reloc,/* special_function */
2221 "R_NDS32_RELAX_REGION_BEGIN",/* name */
2222 FALSE, /* partial_inplace */
2223 0xffffffff, /* src_mask */
2224 0xffffffff, /* dst_mask */
2225 FALSE), /* pcrel_offset */
2226 HOWTO3 (R_NDS32_RELAX_REGION_END,/* type */
2227 0, /* rightshift */
2228 2, /* size (0 = byte, 1 = short, 2 = long) */
2229 32, /* bitsize */
2230 FALSE, /* pc_relative */
2231 0, /* bitpos */
2232 complain_overflow_dont,/* complain_on_overflow */
2233 nds32_elf_ignore_reloc,/* special_function */
2234 "R_NDS32_RELAX_REGION_END",/* name */
2235 FALSE, /* partial_inplace */
2236 0xffffffff, /* src_mask */
2237 0xffffffff, /* dst_mask */
2238 FALSE), /* pcrel_offset */
2239 HOWTO3 (R_NDS32_MINUEND, /* type */
2240 0, /* rightshift */
2241 2, /* size (0 = byte, 1 = short, 2 = long) */
2242 32, /* bitsize */
2243 FALSE, /* pc_relative */
2244 0, /* bitpos */
2245 complain_overflow_dont,/* complain_on_overflow */
2246 nds32_elf_ignore_reloc,/* special_function */
2247 "R_NDS32_MINUEND", /* name */
2248 FALSE, /* partial_inplace */
2249 0xffffffff, /* src_mask */
2250 0xffffffff, /* dst_mask */
2251 FALSE), /* pcrel_offset */
2252 HOWTO3 (R_NDS32_SUBTRAHEND, /* type */
2253 0, /* rightshift */
2254 2, /* size (0 = byte, 1 = short, 2 = long) */
2255 32, /* bitsize */
2256 FALSE, /* pc_relative */
2257 0, /* bitpos */
2258 complain_overflow_dont,/* complain_on_overflow */
2259 nds32_elf_ignore_reloc,/* special_function */
2260 "R_NDS32_SUBTRAHEND", /* name */
2261 FALSE, /* partial_inplace */
2262 0xffffffff, /* src_mask */
2263 0xffffffff, /* dst_mask */
2264 FALSE), /* pcrel_offset */
2265 HOWTO3 (R_NDS32_DIFF8, /* type */
2266 0, /* rightshift */
2267 0, /* size (0 = byte, 1 = short, 2 = long) */
2268 8, /* bitsize */
2269 FALSE, /* pc_relative */
2270 0, /* bitpos */
2271 complain_overflow_dont,/* complain_on_overflow */
2272 nds32_elf_ignore_reloc,/* special_function */
2273 "R_NDS32_DIFF8", /* name */
2274 FALSE, /* partial_inplace */
2275 0x000000ff, /* src_mask */
2276 0x000000ff, /* dst_mask */
2277 FALSE), /* pcrel_offset */
2278 HOWTO3 (R_NDS32_DIFF16, /* type */
2279 0, /* rightshift */
2280 1, /* size (0 = byte, 1 = short, 2 = long) */
2281 16, /* bitsize */
2282 FALSE, /* pc_relative */
2283 0, /* bitpos */
2284 complain_overflow_dont,/* complain_on_overflow */
2285 nds32_elf_ignore_reloc,/* special_function */
2286 "R_NDS32_DIFF16", /* name */
2287 FALSE, /* partial_inplace */
2288 0x0000ffff, /* src_mask */
2289 0x0000ffff, /* dst_mask */
2290 FALSE), /* pcrel_offset */
2291 HOWTO3 (R_NDS32_DIFF32, /* type */
2292 0, /* rightshift */
2293 2, /* size (0 = byte, 1 = short, 2 = long) */
2294 32, /* bitsize */
2295 FALSE, /* pc_relative */
2296 0, /* bitpos */
2297 complain_overflow_dont,/* complain_on_overflow */
2298 nds32_elf_ignore_reloc,/* special_function */
2299 "R_NDS32_DIFF32", /* name */
2300 FALSE, /* partial_inplace */
2301 0xffffffff, /* src_mask */
2302 0xffffffff, /* dst_mask */
2303 FALSE), /* pcrel_offset */
2304 HOWTO3 (R_NDS32_DIFF_ULEB128, /* type */
2305 0, /* rightshift */
2306 0, /* size (0 = byte, 1 = short, 2 = long) */
2307 0, /* bitsize */
2308 FALSE, /* pc_relative */
2309 0, /* bitpos */
2310 complain_overflow_dont,/* complain_on_overflow */
2311 nds32_elf_ignore_reloc,/* special_function */
2312 "R_NDS32_DIFF_ULEB128",/* name */
2313 FALSE, /* partial_inplace */
2314 0xffffffff, /* src_mask */
2315 0xffffffff, /* dst_mask */
2316 FALSE), /* pcrel_offset */
2317 HOWTO3 (R_NDS32_DATA, /* type */
2318 0, /* rightshift */
2319 2, /* size (0 = byte, 1 = short, 2 = long) */
2320 32, /* bitsize */
2321 FALSE, /* pc_relative */
2322 0, /* bitpos */
2323 complain_overflow_dont,/* complain_on_overflow */
2324 nds32_elf_ignore_reloc,/* special_function */
2325 "R_NDS32_DATA", /* name */
2326 FALSE, /* partial_inplace */
2327 0xffffffff, /* src_mask */
2328 0xffffffff, /* dst_mask */
2329 FALSE), /* pcrel_offset */
2330 HOWTO3 (R_NDS32_TRAN, /* type */
2331 0, /* rightshift */
2332 2, /* size (0 = byte, 1 = short, 2 = long) */
2333 32, /* bitsize */
2334 FALSE, /* pc_relative */
2335 0, /* bitpos */
2336 complain_overflow_dont,/* complain_on_overflow */
2337 nds32_elf_ignore_reloc,/* special_function */
2338 "R_NDS32_TRAN", /* name */
2339 FALSE, /* partial_inplace */
2340 0xffffffff, /* src_mask */
2341 0xffffffff, /* dst_mask */
2342 FALSE), /* pcrel_offset */
2343 HOWTO3 (R_NDS32_TLS_LE_ADD, /* type */
2344 0, /* rightshift */
2345 2, /* size (0 = byte, 1 = short, 2 = long) */
2346 32, /* bitsize */
2347 FALSE, /* pc_relative */
2348 0, /* bitpos */
2349 complain_overflow_dont,/* complain_on_overflow */
2350 nds32_elf_ignore_reloc,/* special_function */
2351 "R_NDS32_TLS_LE_ADD", /* name */
2352 FALSE, /* partial_inplace */
2353 0xffffffff, /* src_mask */
2354 0xffffffff, /* dst_mask */
2355 FALSE), /* pcrel_offset */
2356 HOWTO3 (R_NDS32_TLS_LE_LS, /* type */
2357 0, /* rightshift */
2358 2, /* size (0 = byte, 1 = short, 2 = long) */
2359 32, /* bitsize */
2360 FALSE, /* pc_relative */
2361 0, /* bitpos */
2362 complain_overflow_dont,/* complain_on_overflow */
2363 nds32_elf_ignore_reloc,/* special_function */
2364 "R_NDS32_TLS_LE_LS", /* name */
2365 FALSE, /* partial_inplace */
2366 0xffffffff, /* src_mask */
2367 0xffffffff, /* dst_mask */
2368 FALSE), /* pcrel_offset */
2369 HOWTO3 (R_NDS32_EMPTY, /* type */
2370 0, /* rightshift */
2371 2, /* size (0 = byte, 1 = short, 2 = long) */
2372 32, /* bitsize */
2373 FALSE, /* pc_relative */
2374 0, /* bitpos */
2375 complain_overflow_dont,/* complain_on_overflow */
2376 nds32_elf_ignore_reloc,/* special_function */
2377 "R_NDS32_EMPTY", /* name */
2378 FALSE, /* partial_inplace */
2379 0xffffffff, /* src_mask */
2380 0xffffffff, /* dst_mask */
2381 FALSE), /* pcrel_offset */
2382 /* TLS GD/LD description address base addition. */
2383 HOWTO3 (R_NDS32_TLS_DESC_ADD, /* type */
2384 0, /* rightshift */
2385 2, /* size (0 = byte, 1 = short, 2 = long) */
2386 32, /* bitsize */
2387 FALSE, /* pc_relative */
2388 0, /* bitpos */
2389 complain_overflow_dont,/* complain_on_overflow */
2390 nds32_elf_ignore_reloc,/* special_function */
2391 "R_NDS32_TLS_DESC_ADD",/* name */
2392 FALSE, /* partial_inplace */
2393 0xffffffff, /* src_mask */
2394 0xffffffff, /* dst_mask */
2395 FALSE), /* pcrel_offset */
2396 /* TLS GD/LD description function load. */
2397 HOWTO3 (R_NDS32_TLS_DESC_FUNC,/* type */
2398 0, /* rightshift */
2399 2, /* size (0 = byte, 1 = short, 2 = long) */
2400 32, /* bitsize */
2401 FALSE, /* pc_relative */
2402 0, /* bitpos */
2403 complain_overflow_dont,/* complain_on_overflow */
2404 nds32_elf_ignore_reloc,/* special_function */
2405 "R_NDS32_TLS_DESC_FUNC",/* name */
2406 FALSE, /* partial_inplace */
2407 0xffffffff, /* src_mask */
2408 0xffffffff, /* dst_mask */
2409 FALSE), /* pcrel_offset */
2410 /* TLS DESC resolve function call. */
2411 HOWTO3 (R_NDS32_TLS_DESC_CALL,/* type */
2412 0, /* rightshift */
2413 2, /* size (0 = byte, 1 = short, 2 = long) */
2414 32, /* bitsize */
2415 FALSE, /* pc_relative */
2416 0, /* bitpos */
2417 complain_overflow_dont,/* complain_on_overflow */
2418 nds32_elf_ignore_reloc,/* special_function */
2419 "R_NDS32_TLS_DESC_CALL",/* name */
2420 FALSE, /* partial_inplace */
2421 0xffffffff, /* src_mask */
2422 0xffffffff, /* dst_mask */
2423 FALSE), /* pcrel_offset */
2424 /* TLS DESC variable access. */
2425 HOWTO3 (R_NDS32_TLS_DESC_MEM, /* type */
2426 0, /* rightshift */
2427 2, /* size (0 = byte, 1 = short, 2 = long) */
2428 32, /* bitsize */
2429 FALSE, /* pc_relative */
2430 0, /* bitpos */
2431 complain_overflow_dont,/* complain_on_overflow */
2432 nds32_elf_ignore_reloc,/* special_function */
2433 "R_NDS32_TLS_DESC_MEM",/* name */
2434 FALSE, /* partial_inplace */
2435 0xffffffff, /* src_mask */
2436 0xffffffff, /* dst_mask */
2437 FALSE), /* pcrel_offset */
2438 /* TLS GD/LD description mark (@tlsdec). */
2439 HOWTO3 (R_NDS32_RELAX_REMOVE, /* type */
2440 0, /* rightshift */
2441 2, /* size (0 = byte, 1 = short, 2 = long) */
2442 32, /* bitsize */
2443 FALSE, /* pc_relative */
2444 0, /* bitpos */
2445 complain_overflow_dont,/* complain_on_overflow */
2446 nds32_elf_ignore_reloc,/* special_function */
2447 "R_NDS32_REMOVE", /* name */
2448 FALSE, /* partial_inplace */
2449 0xffffffff, /* src_mask */
2450 0xffffffff, /* dst_mask */
2451 FALSE), /* pcrel_offset */
2452 /* TLS GD/LD description mark (@tlsdec). */
2453 HOWTO3 (R_NDS32_RELAX_GROUP, /* type */
2454 0, /* rightshift */
2455 2, /* size (0 = byte, 1 = short, 2 = long) */
2456 32, /* bitsize */
2457 FALSE, /* pc_relative */
2458 0, /* bitpos */
2459 complain_overflow_dont,/* complain_on_overflow */
2460 nds32_elf_ignore_reloc,/* special_function */
2461 "R_NDS32_GROUP", /* name */
2462 FALSE, /* partial_inplace */
2463 0xffffffff, /* src_mask */
2464 0xffffffff, /* dst_mask */
2465 FALSE), /* pcrel_offset */
2466 HOWTO3 (R_NDS32_TLS_IEGP_LW, /* type */
2467 0, /* rightshift */
2468 2, /* size (0 = byte, 1 = short, 2 = long) */
2469 32, /* bitsize */
2470 FALSE, /* pc_relative */
2471 0, /* bitpos */
2472 complain_overflow_dont,/* complain_on_overflow */
2473 nds32_elf_ignore_reloc,/* special_function */
2474 "R_NDS32_TLS_IEGP_LW", /* name */
2475 FALSE, /* partial_inplace */
2476 0xffffffff, /* src_mask */
2477 0xffffffff, /* dst_mask */
2478 FALSE), /* pcrel_offset */
2479 /* LA and FLSI relaxation. */
2480 HOWTO3 (R_NDS32_LSI, /* type */
2481 0, /* rightshift */
2482 2, /* size (0 = byte, 1 = short, 2 = long) */
2483 32, /* bitsize */
2484 FALSE, /* pc_relative */
2485 0, /* bitpos */
2486 complain_overflow_dont,/* complain_on_overflow */
2487 nds32_elf_ignore_reloc,/* special_function */
2488 "R_NDS32_LSI", /* name */
2489 FALSE, /* partial_inplace */
2490 0xffffffff, /* src_mask */
2491 0xffffffff, /* dst_mask */
2492 FALSE),
2493 };
2494
2495 static unsigned long dl_tlsdesc_lazy_trampoline[] =
2496 {
2497 0x46200000, /* sethi $r2,#0x0 */
2498 0x58210000, /* ori $r2,$r2,#0x0 */
2499 0x40217400, /* add $r2,$r2,$gp */
2500 0x04210000, /* lwi $r2,[$r2+#0x0] */
2501 0x46300000, /* sethi $r3,#0x0 */
2502 0x58318000, /* ori $r3,$r3,#0x0 */
2503 0x4031f400, /* add $r3,$r3,$gp */
2504 0x4a000800, /* jr $r2 */
2505 };
2506
2507 static void
2508 nds32_put_trampoline (void *contents, const unsigned long *template,
2509 unsigned count)
2510 {
2511 unsigned ix;
2512
2513 for (ix = 0; ix != count; ix++)
2514 {
2515 unsigned long insn = template[ix];
2516 bfd_putb32 (insn, (char *) contents + ix * 4);
2517 }
2518 }
2519
2520 /* nds32_insertion_sort sorts an array with nmemb elements of size size.
2521 This prototype is the same as qsort (). */
2522
2523 void
2524 nds32_insertion_sort (void *base, size_t nmemb, size_t size,
2525 int (*compar) (const void *lhs, const void *rhs))
2526 {
2527 char *ptr = (char *) base;
2528 int i, j;
2529 char tmp[sizeof (Elf_Internal_Rela)];
2530
2531 BFD_ASSERT (size <= sizeof (tmp));
2532
2533 /* If i is less than j, i is inserted before j.
2534
2535 |---- j ----- i --------------|
2536 \ / \ /
2537 sorted unsorted
2538 */
2539
2540 for (i = 1; i < (int) nmemb; i++)
2541 {
2542 for (j = (i - 1); j >= 0; j--)
2543 if (compar (ptr + i * size, ptr + j * size) >= 0)
2544 break;
2545
2546 j++;
2547
2548 if (i == j)
2549 continue; /* i is in order. */
2550
2551 memcpy (tmp, ptr + i * size, size);
2552 memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size);
2553 memcpy (ptr + j * size, tmp, size);
2554 }
2555 }
2556
2557 /* Sort relocation by r_offset.
2558
2559 We didn't use qsort () in stdlib, because quick-sort is not a stable sorting
2560 algorithm. Relocations at the same r_offset must keep their order.
2561 For example, RELAX_ENTRY must be the very first relocation entry.
2562
2563 Currently, this function implements insertion-sort.
2564
2565 FIXME: If we already sort them in assembler, why bother sort them
2566 here again? */
2567
2568 static int
2569 compar_reloc (const void *lhs, const void *rhs)
2570 {
2571 const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs;
2572 const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs;
2573
2574 if (l->r_offset > r->r_offset)
2575 return 1;
2576 else if (l->r_offset == r->r_offset)
2577 return 0;
2578 else
2579 return -1;
2580 }
2581
2582 /* Functions listed below are only used for old relocs.
2583 nds32_elf_9_pcrel_reloc
2584 nds32_elf_do_9_pcrel_reloc
2585 nds32_elf_hi20_reloc
2586 nds32_elf_relocate_hi20
2587 nds32_elf_lo12_reloc
2588 nds32_elf_sda15_reloc
2589 nds32_elf_generic_reloc. */
2590
2591 /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */
2592
2593 static bfd_reloc_status_type
2594 nds32_elf_9_pcrel_reloc (bfd * abfd,
2595 arelent * reloc_entry,
2596 asymbol * symbol,
2597 void * data,
2598 asection * input_section,
2599 bfd * output_bfd,
2600 char ** error_message ATTRIBUTE_UNUSED)
2601 {
2602 /* This part is from bfd_elf_generic_reloc. */
2603 if (output_bfd != (bfd *) NULL
2604 && (symbol->flags & BSF_SECTION_SYM) == 0
2605 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2606 {
2607 reloc_entry->address += input_section->output_offset;
2608 return bfd_reloc_ok;
2609 }
2610
2611 if (output_bfd != NULL)
2612 {
2613 /* FIXME: See bfd_perform_relocation. Is this right? */
2614 return bfd_reloc_continue;
2615 }
2616
2617 return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto,
2618 input_section,
2619 data, reloc_entry->address,
2620 symbol->section,
2621 (symbol->value
2622 + symbol->section->output_section->vma
2623 + symbol->section->output_offset),
2624 reloc_entry->addend);
2625 }
2626
2627 /* Utility to actually perform an R_NDS32_9_PCREL reloc. */
2628 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
2629
2630 static bfd_reloc_status_type
2631 nds32_elf_do_9_pcrel_reloc (bfd * abfd,
2632 reloc_howto_type * howto,
2633 asection * input_section,
2634 bfd_byte * data,
2635 bfd_vma offset,
2636 asection * symbol_section ATTRIBUTE_UNUSED,
2637 bfd_vma symbol_value,
2638 bfd_vma addend)
2639 {
2640 bfd_signed_vma relocation;
2641 unsigned short x;
2642 bfd_reloc_status_type status;
2643
2644 /* Sanity check the address (offset in section). */
2645 if (offset > bfd_get_section_limit (abfd, input_section))
2646 return bfd_reloc_outofrange;
2647
2648 relocation = symbol_value + addend;
2649 /* Make it pc relative. */
2650 relocation -= (input_section->output_section->vma
2651 + input_section->output_offset);
2652 /* These jumps mask off the lower two bits of the current address
2653 before doing pcrel calculations. */
2654 relocation -= (offset & -(bfd_vma) 2);
2655
2656 if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1)
2657 status = bfd_reloc_overflow;
2658 else
2659 status = bfd_reloc_ok;
2660
2661 x = bfd_getb16 (data + offset);
2662
2663 relocation >>= howto->rightshift;
2664 relocation <<= howto->bitpos;
2665 x = (x & ~howto->dst_mask)
2666 | (((x & howto->src_mask) + relocation) & howto->dst_mask);
2667
2668 bfd_putb16 ((bfd_vma) x, data + offset);
2669
2670 return status;
2671 }
2672
2673 /* Handle the R_NDS32_HI20_[SU]LO relocs.
2674 HI20_SLO is for the add3 and load/store with displacement instructions.
2675 HI20 is for the or3 instruction.
2676 For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to
2677 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
2678 we must add one to the high 16 bytes (which will get subtracted off when
2679 the low 16 bits are added).
2680 These relocs have to be done in combination with an R_NDS32_LO12 reloc
2681 because there is a carry from the LO12 to the HI20. Here we just save
2682 the information we need; we do the actual relocation when we see the LO12.
2683 This code is copied from the elf32-mips.c. We also support an arbitrary
2684 number of HI20 relocs to be associated with a single LO12 reloc. The
2685 assembler sorts the relocs to ensure each HI20 immediately precedes its
2686 LO12. However if there are multiple copies, the assembler may not find
2687 the real LO12 so it picks the first one it finds. */
2688
2689 struct nds32_hi20
2690 {
2691 struct nds32_hi20 *next;
2692 bfd_byte *addr;
2693 bfd_vma addend;
2694 };
2695
2696 static struct nds32_hi20 *nds32_hi20_list;
2697
2698 static bfd_reloc_status_type
2699 nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2700 arelent *reloc_entry,
2701 asymbol *symbol,
2702 void *data,
2703 asection *input_section,
2704 bfd *output_bfd,
2705 char **error_message ATTRIBUTE_UNUSED)
2706 {
2707 bfd_reloc_status_type ret;
2708 bfd_vma relocation;
2709 struct nds32_hi20 *n;
2710
2711 /* This part is from bfd_elf_generic_reloc.
2712 If we're relocating, and this an external symbol, we don't want
2713 to change anything. */
2714 if (output_bfd != (bfd *) NULL
2715 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0)
2716 {
2717 reloc_entry->address += input_section->output_offset;
2718 return bfd_reloc_ok;
2719 }
2720
2721 /* Sanity check the address (offset in section). */
2722 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2723 return bfd_reloc_outofrange;
2724
2725 ret = bfd_reloc_ok;
2726 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2727 ret = bfd_reloc_undefined;
2728
2729 if (bfd_is_com_section (symbol->section))
2730 relocation = 0;
2731 else
2732 relocation = symbol->value;
2733
2734 relocation += symbol->section->output_section->vma;
2735 relocation += symbol->section->output_offset;
2736 relocation += reloc_entry->addend;
2737
2738 /* Save the information, and let LO12 do the actual relocation. */
2739 n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n);
2740 if (n == NULL)
2741 return bfd_reloc_outofrange;
2742
2743 n->addr = (bfd_byte *) data + reloc_entry->address;
2744 n->addend = relocation;
2745 n->next = nds32_hi20_list;
2746 nds32_hi20_list = n;
2747
2748 if (output_bfd != (bfd *) NULL)
2749 reloc_entry->address += input_section->output_offset;
2750
2751 return ret;
2752 }
2753
2754 /* Handle an NDS32 ELF HI20 reloc. */
2755
2756 static void
2757 nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED,
2758 int type ATTRIBUTE_UNUSED,
2759 Elf_Internal_Rela *relhi,
2760 Elf_Internal_Rela *rello,
2761 bfd_byte *contents,
2762 bfd_vma addend)
2763 {
2764 unsigned long insn;
2765 bfd_vma addlo;
2766
2767 insn = bfd_getb32 (contents + relhi->r_offset);
2768
2769 addlo = bfd_getb32 (contents + rello->r_offset);
2770 addlo &= 0xfff;
2771
2772 addend += ((insn & 0xfffff) << 20) + addlo;
2773
2774 insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff);
2775 bfd_putb32 (insn, contents + relhi->r_offset);
2776 }
2777
2778 /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit
2779 inplace relocation; this function exists in order to do the
2780 R_NDS32_HI20_[SU]LO relocation described above. */
2781
2782 static bfd_reloc_status_type
2783 nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol,
2784 void *data, asection *input_section, bfd *output_bfd,
2785 char **error_message)
2786 {
2787 /* This part is from bfd_elf_generic_reloc.
2788 If we're relocating, and this an external symbol, we don't want
2789 to change anything. */
2790 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2791 && reloc_entry->addend == 0)
2792 {
2793 reloc_entry->address += input_section->output_offset;
2794 return bfd_reloc_ok;
2795 }
2796
2797 if (nds32_hi20_list != NULL)
2798 {
2799 struct nds32_hi20 *l;
2800
2801 l = nds32_hi20_list;
2802 while (l != NULL)
2803 {
2804 unsigned long insn;
2805 unsigned long val;
2806 unsigned long vallo;
2807 struct nds32_hi20 *next;
2808
2809 /* Do the HI20 relocation. Note that we actually don't need
2810 to know anything about the LO12 itself, except where to
2811 find the low 12 bits of the addend needed by the LO12. */
2812 insn = bfd_getb32 (l->addr);
2813 vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address);
2814 vallo &= 0xfff;
2815 switch (reloc_entry->howto->type)
2816 {
2817 case R_NDS32_LO12S3:
2818 vallo <<= 3;
2819 break;
2820
2821 case R_NDS32_LO12S2:
2822 vallo <<= 2;
2823 break;
2824
2825 case R_NDS32_LO12S1:
2826 vallo <<= 1;
2827 break;
2828
2829 case R_NDS32_LO12S0:
2830 vallo <<= 0;
2831 break;
2832 }
2833
2834 val = ((insn & 0xfffff) << 12) + vallo;
2835 val += l->addend;
2836
2837 insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff);
2838 bfd_putb32 ((bfd_vma) insn, l->addr);
2839
2840 next = l->next;
2841 free (l);
2842 l = next;
2843 }
2844
2845 nds32_hi20_list = NULL;
2846 }
2847
2848 /* Now do the LO12 reloc in the usual way.
2849 ??? It would be nice to call bfd_elf_generic_reloc here,
2850 but we have partial_inplace set. bfd_elf_generic_reloc will
2851 pass the handling back to bfd_install_relocation which will install
2852 a section relative addend which is wrong. */
2853 return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
2854 input_section, output_bfd, error_message);
2855 }
2856
2857 /* Do generic partial_inplace relocation.
2858 This is a local replacement for bfd_elf_generic_reloc. */
2859
2860 static bfd_reloc_status_type
2861 nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry,
2862 asymbol *symbol, void *data, asection *input_section,
2863 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
2864 {
2865 bfd_reloc_status_type ret;
2866 bfd_vma relocation;
2867 bfd_byte *inplace_address;
2868
2869 /* This part is from bfd_elf_generic_reloc.
2870 If we're relocating, and this an external symbol, we don't want
2871 to change anything. */
2872 if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0
2873 && reloc_entry->addend == 0)
2874 {
2875 reloc_entry->address += input_section->output_offset;
2876 return bfd_reloc_ok;
2877 }
2878
2879 /* Now do the reloc in the usual way.
2880 ??? It would be nice to call bfd_elf_generic_reloc here,
2881 but we have partial_inplace set. bfd_elf_generic_reloc will
2882 pass the handling back to bfd_install_relocation which will install
2883 a section relative addend which is wrong. */
2884
2885 /* Sanity check the address (offset in section). */
2886 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
2887 return bfd_reloc_outofrange;
2888
2889 ret = bfd_reloc_ok;
2890 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
2891 ret = bfd_reloc_undefined;
2892
2893 if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
2894 relocation = 0;
2895 else
2896 relocation = symbol->value;
2897
2898 /* Only do this for a final link. */
2899 if (output_bfd == (bfd *) NULL)
2900 {
2901 relocation += symbol->section->output_section->vma;
2902 relocation += symbol->section->output_offset;
2903 }
2904
2905 relocation += reloc_entry->addend;
2906 switch (reloc_entry->howto->type)
2907 {
2908 case R_NDS32_LO12S3:
2909 relocation >>= 3;
2910 break;
2911
2912 case R_NDS32_LO12S2:
2913 relocation >>= 2;
2914 break;
2915
2916 case R_NDS32_LO12S1:
2917 relocation >>= 1;
2918 break;
2919
2920 case R_NDS32_LO12S0:
2921 default:
2922 relocation >>= 0;
2923 break;
2924 }
2925
2926 inplace_address = (bfd_byte *) data + reloc_entry->address;
2927
2928 #define DOIT(x) \
2929 x = ((x & ~reloc_entry->howto->dst_mask) | \
2930 (((x & reloc_entry->howto->src_mask) + relocation) & \
2931 reloc_entry->howto->dst_mask))
2932
2933 switch (reloc_entry->howto->size)
2934 {
2935 case 1:
2936 {
2937 short x = bfd_getb16 (inplace_address);
2938
2939 DOIT (x);
2940 bfd_putb16 ((bfd_vma) x, inplace_address);
2941 }
2942 break;
2943 case 2:
2944 {
2945 unsigned long x = bfd_getb32 (inplace_address);
2946
2947 DOIT (x);
2948 bfd_putb32 ((bfd_vma) x, inplace_address);
2949 }
2950 break;
2951 default:
2952 BFD_ASSERT (0);
2953 }
2954
2955 if (output_bfd != (bfd *) NULL)
2956 reloc_entry->address += input_section->output_offset;
2957
2958 return ret;
2959 }
2960
2961 /* Handle the R_NDS32_SDA15 reloc.
2962 This reloc is used to compute the address of objects in the small data area
2963 and to perform loads and stores from that area.
2964 The lower 15 bits are sign extended and added to the register specified
2965 in the instruction, which is assumed to point to _SDA_BASE_.
2966
2967 Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on
2968 the access size, this must be taken care of. */
2969
2970 static bfd_reloc_status_type
2971 nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
2972 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
2973 asection *input_section, bfd *output_bfd,
2974 char **error_message ATTRIBUTE_UNUSED)
2975 {
2976 /* This part is from bfd_elf_generic_reloc. */
2977 if (output_bfd != (bfd *) NULL
2978 && (symbol->flags & BSF_SECTION_SYM) == 0
2979 && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
2980 {
2981 reloc_entry->address += input_section->output_offset;
2982 return bfd_reloc_ok;
2983 }
2984
2985 if (output_bfd != NULL)
2986 {
2987 /* FIXME: See bfd_perform_relocation. Is this right? */
2988 return bfd_reloc_continue;
2989 }
2990
2991 /* FIXME: not sure what to do here yet. But then again, the linker
2992 may never call us. */
2993 abort ();
2994 }
2995
2996 /* nds32_elf_ignore_reloc is the special function for
2997 relocation types which don't need to be relocated
2998 like relaxation relocation types.
2999 This function simply return bfd_reloc_ok when it is
3000 invoked. */
3001
3002 static bfd_reloc_status_type
3003 nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
3004 asymbol *symbol ATTRIBUTE_UNUSED,
3005 void *data ATTRIBUTE_UNUSED, asection *input_section,
3006 bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED)
3007 {
3008 if (output_bfd != NULL)
3009 reloc_entry->address += input_section->output_offset;
3010
3011 return bfd_reloc_ok;
3012 }
3013 \f
3014
3015 /* Map BFD reloc types to NDS32 ELF reloc types. */
3016
3017 struct nds32_reloc_map_entry
3018 {
3019 bfd_reloc_code_real_type bfd_reloc_val;
3020 unsigned char elf_reloc_val;
3021 };
3022
3023 static const struct nds32_reloc_map_entry nds32_reloc_map[] =
3024 {
3025 {BFD_RELOC_NONE, R_NDS32_NONE},
3026 {BFD_RELOC_16, R_NDS32_16_RELA},
3027 {BFD_RELOC_32, R_NDS32_32_RELA},
3028 {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT},
3029 {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY},
3030
3031 {BFD_RELOC_NDS32_20, R_NDS32_20_RELA},
3032 {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA},
3033 {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA},
3034 {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA},
3035 {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA},
3036 {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA},
3037 {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA},
3038 {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA},
3039 {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA},
3040 {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA},
3041 {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA},
3042 {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA},
3043 {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA},
3044 {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA},
3045 {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA},
3046 {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA},
3047 {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA},
3048 {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA},
3049 {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA},
3050 {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA},
3051 {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20},
3052 {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL},
3053 {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL},
3054 {BFD_RELOC_NDS32_COPY, R_NDS32_COPY},
3055 {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT},
3056 {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT},
3057 {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE},
3058 {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF},
3059 {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20},
3060 {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12},
3061 {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20},
3062 {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20},
3063 {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12},
3064 {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20},
3065 {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12},
3066 {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16},
3067 {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL},
3068 {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1},
3069 {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2},
3070 {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3},
3071 {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1},
3072 {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2},
3073 {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3},
3074 {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE},
3075 {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA},
3076 {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA},
3077 {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA},
3078 {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA},
3079 {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4},
3080 {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5},
3081 {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6},
3082 {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4},
3083 {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5},
3084 {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6},
3085 {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7},
3086 {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20},
3087 {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12},
3088 {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20},
3089 {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12},
3090 {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA},
3091 {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA},
3092 {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA},
3093 {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA},
3094 {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA},
3095 {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA},
3096 {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA},
3097 {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA},
3098 {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20},
3099 {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15},
3100 {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19},
3101 {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15},
3102 {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19},
3103 {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15},
3104 {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19},
3105 {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA},
3106 {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA},
3107 {BFD_RELOC_NDS32_5, R_NDS32_5_RELA},
3108 {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA},
3109 {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA},
3110 {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY},
3111 {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF},
3112 {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF},
3113 {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF},
3114 {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF},
3115 {BFD_RELOC_NDS32_PTR, R_NDS32_PTR},
3116 {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT},
3117 {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED},
3118 {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK},
3119 {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN},
3120 {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END},
3121 {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND},
3122 {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND},
3123 {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8},
3124 {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16},
3125 {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32},
3126 {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128},
3127 {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY},
3128 {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA},
3129 {BFD_RELOC_NDS32_DATA, R_NDS32_DATA},
3130 {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN},
3131 {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA},
3132 {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA},
3133 /* Not sure. */
3134 {BFD_RELOC_NDS32_TPOFF, R_NDS32_TLS_TPOFF},
3135 /* Missing: BFD_RELOC_NDS32_GOTTPOFF. */
3136 {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20},
3137 {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12},
3138 {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20},
3139 {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0},
3140 {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1},
3141 {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2},
3142 {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD},
3143 {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS},
3144 {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20},
3145 {BFD_RELOC_NDS32_TLS_IE_LO12, R_NDS32_TLS_IE_LO12},
3146 {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2},
3147 {BFD_RELOC_NDS32_TLS_IEGP_HI20, R_NDS32_TLS_IEGP_HI20},
3148 {BFD_RELOC_NDS32_TLS_IEGP_LO12, R_NDS32_TLS_IEGP_LO12},
3149 {BFD_RELOC_NDS32_TLS_IEGP_LO12S2, R_NDS32_TLS_IEGP_LO12S2},
3150 {BFD_RELOC_NDS32_TLS_IEGP_LW, R_NDS32_TLS_IEGP_LW},
3151 {BFD_RELOC_NDS32_TLS_DESC, R_NDS32_TLS_DESC},
3152 {BFD_RELOC_NDS32_TLS_DESC_HI20, R_NDS32_TLS_DESC_HI20},
3153 {BFD_RELOC_NDS32_TLS_DESC_LO12, R_NDS32_TLS_DESC_LO12},
3154 {BFD_RELOC_NDS32_TLS_DESC_20, R_NDS32_TLS_DESC_20},
3155 {BFD_RELOC_NDS32_TLS_DESC_SDA17S2, R_NDS32_TLS_DESC_SDA17S2},
3156 {BFD_RELOC_NDS32_TLS_DESC_ADD, R_NDS32_TLS_DESC_ADD},
3157 {BFD_RELOC_NDS32_TLS_DESC_FUNC, R_NDS32_TLS_DESC_FUNC},
3158 {BFD_RELOC_NDS32_TLS_DESC_CALL, R_NDS32_TLS_DESC_CALL},
3159 {BFD_RELOC_NDS32_TLS_DESC_MEM, R_NDS32_TLS_DESC_MEM},
3160 {BFD_RELOC_NDS32_REMOVE, R_NDS32_RELAX_REMOVE},
3161 {BFD_RELOC_NDS32_GROUP, R_NDS32_RELAX_GROUP},
3162 {BFD_RELOC_NDS32_LSI, R_NDS32_LSI},
3163 };
3164
3165 /* Patch tag. */
3166
3167 static reloc_howto_type *
3168 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
3169 const char *r_name)
3170 {
3171 unsigned int i;
3172
3173 for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++)
3174 if (nds32_elf_howto_table[i].name != NULL
3175 && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0)
3176 return &nds32_elf_howto_table[i];
3177
3178 for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++)
3179 if (nds32_elf_relax_howto_table[i].name != NULL
3180 && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0)
3181 return &nds32_elf_relax_howto_table[i];
3182
3183 return NULL;
3184 }
3185
3186 static reloc_howto_type *
3187 bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code)
3188 {
3189 if (code < R_NDS32_RELAX_ENTRY)
3190 {
3191 BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table));
3192 return &nds32_elf_howto_table[code];
3193 }
3194 else
3195 {
3196 if ((size_t) (code - R_NDS32_RELAX_ENTRY)
3197 >= ARRAY_SIZE (nds32_elf_relax_howto_table))
3198 {
3199 int i = code;
3200 i += 1;
3201 }
3202
3203 BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY)
3204 < ARRAY_SIZE (nds32_elf_relax_howto_table));
3205 return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY];
3206 }
3207 }
3208
3209 static reloc_howto_type *
3210 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
3211 bfd_reloc_code_real_type code)
3212 {
3213 unsigned int i;
3214
3215 for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++)
3216 {
3217 if (nds32_reloc_map[i].bfd_reloc_val == code)
3218 return bfd_elf32_bfd_reloc_type_table_lookup
3219 (nds32_reloc_map[i].elf_reloc_val);
3220 }
3221
3222 return NULL;
3223 }
3224
3225 /* Set the howto pointer for an NDS32 ELF reloc. */
3226
3227 static bfd_boolean
3228 nds32_info_to_howto_rel (bfd *abfd, arelent *cache_ptr,
3229 Elf_Internal_Rela *dst)
3230 {
3231 enum elf_nds32_reloc_type r_type;
3232
3233 r_type = ELF32_R_TYPE (dst->r_info);
3234 if (r_type > R_NDS32_GNU_VTENTRY)
3235 {
3236 /* xgettext:c-format */
3237 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
3238 abfd, r_type);
3239 bfd_set_error (bfd_error_bad_value);
3240 return FALSE;
3241 }
3242
3243 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) <= R_NDS32_GNU_VTENTRY);
3244 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
3245 return TRUE;
3246 }
3247
3248 static bfd_boolean
3249 nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
3250 Elf_Internal_Rela *dst)
3251 {
3252 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
3253
3254 if ((r_type == R_NDS32_NONE)
3255 || ((r_type > R_NDS32_GNU_VTENTRY)
3256 && (r_type < R_NDS32_max)))
3257 {
3258 cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
3259 return TRUE;
3260 }
3261
3262 /* xgettext:c-format */
3263 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
3264 bfd_set_error (bfd_error_bad_value);
3265 return FALSE;
3266 }
3267
3268 /* Support for core dump NOTE sections.
3269 Reference to include/linux/elfcore.h in Linux. */
3270
3271 static bfd_boolean
3272 nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3273 {
3274 int offset;
3275 size_t size;
3276
3277 switch (note->descsz)
3278 {
3279 case 0x114:
3280 /* Linux/NDS32 32-bit, ABI1. */
3281
3282 /* pr_cursig */
3283 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3284
3285 /* pr_pid */
3286 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3287
3288 /* pr_reg */
3289 offset = 72;
3290 size = 200;
3291 break;
3292
3293 case 0xfc:
3294 /* Linux/NDS32 32-bit. */
3295
3296 /* pr_cursig */
3297 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
3298
3299 /* pr_pid */
3300 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
3301
3302 /* pr_reg */
3303 offset = 72;
3304 size = 176;
3305 break;
3306
3307 default:
3308 return FALSE;
3309 }
3310
3311 /* Make a ".reg" section. */
3312 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3313 size, note->descpos + offset);
3314 }
3315
3316 static bfd_boolean
3317 nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3318 {
3319 switch (note->descsz)
3320 {
3321 case 124:
3322 /* Linux/NDS32. */
3323
3324 /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */
3325 elf_tdata (abfd)->core->program =
3326 _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
3327 elf_tdata (abfd)->core->command =
3328 _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
3329 break;
3330
3331 default:
3332 return FALSE;
3333 }
3334
3335 /* Note that for some reason, a spurious space is tacked
3336 onto the end of the args in some (at least one anyway)
3337 implementations, so strip it off if it exists. */
3338 {
3339 char *command = elf_tdata (abfd)->core->command;
3340 int n = strlen (command);
3341
3342 if (0 < n && command[n - 1] == ' ')
3343 command[n - 1] = '\0';
3344 }
3345
3346 return TRUE;
3347 }
3348
3349 /* Hook called by the linker routine which adds symbols from an object
3350 file. We must handle the special NDS32 section numbers here.
3351 We also keep watching for whether we need to create the sdata special
3352 linker sections. */
3353
3354 static bfd_boolean
3355 nds32_elf_add_symbol_hook (bfd *abfd,
3356 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3357 Elf_Internal_Sym *sym,
3358 const char **namep ATTRIBUTE_UNUSED,
3359 flagword *flagsp ATTRIBUTE_UNUSED,
3360 asection **secp, bfd_vma *valp)
3361 {
3362 switch (sym->st_shndx)
3363 {
3364 case SHN_COMMON:
3365 /* Common symbols less than the GP size are automatically
3366 treated as SHN_MIPS_SCOMMON symbols. */
3367 if (sym->st_size > elf_gp_size (abfd)
3368 || ELF_ST_TYPE (sym->st_info) == STT_TLS)
3369 break;
3370
3371 /* st_value is the alignment constraint.
3372 That might be its actual size if it is an array or structure. */
3373 switch (sym->st_value)
3374 {
3375 case 1:
3376 *secp = bfd_make_section_old_way (abfd, ".scommon_b");
3377 break;
3378 case 2:
3379 *secp = bfd_make_section_old_way (abfd, ".scommon_h");
3380 break;
3381 case 4:
3382 *secp = bfd_make_section_old_way (abfd, ".scommon_w");
3383 break;
3384 case 8:
3385 *secp = bfd_make_section_old_way (abfd, ".scommon_d");
3386 break;
3387 default:
3388 return TRUE;
3389 }
3390
3391 (*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA;
3392 *valp = sym->st_size;
3393 break;
3394 }
3395
3396 return TRUE;
3397 }
3398
3399 /* This function can figure out the best location for a base register to access
3400 data relative to this base register
3401 INPUT:
3402 sda_d0: size of first DOUBLE WORD data section
3403 sda_w0: size of first WORD data section
3404 sda_h0: size of first HALF WORD data section
3405 sda_b : size of BYTE data section
3406 sda_hi: size of second HALF WORD data section
3407 sda_w1: size of second WORD data section
3408 sda_d1: size of second DOUBLE WORD data section
3409 OUTPUT:
3410 offset (always positive) from the beginning of sda_d0 if OK
3411 a negative error value if fail
3412 NOTE:
3413 these 7 sections have to be located back to back if exist
3414 a pass in 0 value for non-existing section */
3415
3416 /* Due to the interpretation of simm15 field of load/store depending on
3417 data accessing size, the organization of base register relative data shall
3418 like the following figure
3419 -------------------------------------------
3420 | DOUBLE WORD sized data (range +/- 128K)
3421 -------------------------------------------
3422 | WORD sized data (range +/- 64K)
3423 -------------------------------------------
3424 | HALF WORD sized data (range +/- 32K)
3425 -------------------------------------------
3426 | BYTE sized data (range +/- 16K)
3427 -------------------------------------------
3428 | HALF WORD sized data (range +/- 32K)
3429 -------------------------------------------
3430 | WORD sized data (range +/- 64K)
3431 -------------------------------------------
3432 | DOUBLE WORD sized data (range +/- 128K)
3433 -------------------------------------------
3434 Its base register shall be set to access these data freely. */
3435
3436 /* We have to figure out the SDA_BASE value, so that we can adjust the
3437 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
3438 BFD. If we can't find it, we're stuck. We cache it in the ELF
3439 target data. We don't need to adjust the symbol value for an
3440 external symbol if we are producing relocatable output. */
3441
3442 static asection *sda_rela_sec = NULL;
3443
3444 #define SDA_SECTION_NUM 10
3445
3446 static bfd_reloc_status_type
3447 nds32_elf_final_sda_base (bfd * output_bfd,
3448 struct bfd_link_info * info,
3449 bfd_vma * psb,
3450 bfd_boolean add_symbol)
3451 {
3452 int relax_fp_as_gp;
3453 struct elf_nds32_link_hash_table *table;
3454 struct bfd_link_hash_entry *h, *h2;
3455 long unsigned int total = 0;
3456 asection *first = NULL, *final = NULL, *temp;
3457 bfd_vma sda_base = 0;
3458
3459 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
3460 if (!h || (h->type != bfd_link_hash_defined
3461 && h->type != bfd_link_hash_defweak))
3462 {
3463 /* The first section must be 4-byte aligned to promise _SDA_BASE_ being
3464 4 byte-aligned. Therefore, it has to set the first section ".data"
3465 4 byte-aligned. */
3466 static const char sec_name[SDA_SECTION_NUM][10] =
3467 {
3468 ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b",
3469 ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d"
3470 };
3471 size_t i = 0;
3472
3473 if (output_bfd->sections == NULL)
3474 {
3475 *psb = elf_gp (output_bfd);
3476 return bfd_reloc_ok;
3477 }
3478
3479 /* Get the first and final section. */
3480 while (i < ARRAY_SIZE (sec_name))
3481 {
3482 temp = bfd_get_section_by_name (output_bfd, sec_name[i]);
3483 if (temp && !first && (temp->size != 0 || temp->rawsize != 0))
3484 first = temp;
3485 if (temp && (temp->size != 0 || temp->rawsize != 0))
3486 final = temp;
3487
3488 /* Summarize the sections in order to check if joining .bss. */
3489 if (temp && temp->size != 0)
3490 total += temp->size;
3491 else if (temp && temp->rawsize != 0)
3492 total += temp->rawsize;
3493
3494 i++;
3495 }
3496
3497 /* Check .bss size. */
3498 temp = bfd_get_section_by_name (output_bfd, ".bss");
3499 if (temp)
3500 {
3501 if (temp->size != 0)
3502 total += temp->size;
3503 else if (temp->rawsize != 0)
3504 total += temp->rawsize;
3505
3506 if (total < 0x80000)
3507 {
3508 if (!first && (temp->size != 0 || temp->rawsize != 0))
3509 first = temp;
3510 if ((temp->size != 0 || temp->rawsize != 0))
3511 final = temp;
3512 }
3513 }
3514
3515 if (first && final)
3516 {
3517 /* The middle of data region. */
3518 sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2;
3519
3520 /* Find the section sda_base located. */
3521 i = 0;
3522 while (i < ARRAY_SIZE (sec_name))
3523 {
3524 final = bfd_get_section_by_name (output_bfd, sec_name[i]);
3525 if (final && (final->size != 0 || final->rawsize != 0)
3526 && sda_base >= final->vma)
3527 {
3528 first = final;
3529 i++;
3530 }
3531 else
3532 break;
3533 }
3534 }
3535 else
3536 {
3537 /* If there is not any default data section in output bfd, try to find
3538 the first data section. If no data section be found, just simplily
3539 choose the first output section. */
3540 temp = output_bfd->sections;
3541 while (temp)
3542 {
3543 if (temp->flags & SEC_ALLOC
3544 && (((temp->flags & SEC_DATA)
3545 && ((temp->flags & SEC_READONLY) == 0))
3546 || (temp->flags & SEC_LOAD) == 0)
3547 && (temp->size != 0 || temp->rawsize != 0))
3548 {
3549 if (!first)
3550 first = temp;
3551 final = temp;
3552 }
3553 temp = temp->next;
3554 }
3555
3556 /* There is no data or bss section. */
3557 if (!first || (first->size == 0 && first->rawsize == 0))
3558 {
3559 first = output_bfd->sections;
3560 while (first && first->size == 0 && first->rawsize == 0)
3561 first = first->next;
3562 }
3563
3564 /* There is no concrete section. */
3565 if (!first)
3566 {
3567 *psb = elf_gp (output_bfd);
3568 return bfd_reloc_ok;
3569 }
3570
3571 if (final && (final->vma + final->rawsize - first->vma) <= 0x4000)
3572 sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2;
3573 else
3574 sda_base = first->vma + 0x2000;
3575 }
3576
3577 sda_base -= first->vma;
3578 sda_base = sda_base & (~7);
3579
3580 if (!_bfd_generic_link_add_one_symbol
3581 (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first,
3582 (bfd_vma) sda_base, (const char *) NULL, FALSE,
3583 get_elf_backend_data (output_bfd)->collect, &h))
3584 return FALSE;
3585
3586 sda_rela_sec = first;
3587 }
3588
3589 /* Set _FP_BASE_ to _SDA_BASE_. */
3590 table = nds32_elf_hash_table (info);
3591 relax_fp_as_gp = table->relax_fp_as_gp;
3592 h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME, FALSE, FALSE, FALSE);
3593 /* _SDA_BASE_ is difined in linker script. */
3594 if (!first)
3595 {
3596 first = h->u.def.section;
3597 sda_base = h->u.def.value;
3598 }
3599
3600 if (relax_fp_as_gp && h2
3601 && (h2->type == bfd_link_hash_undefweak
3602 || h2->type == bfd_link_hash_undefined))
3603 {
3604 /* Define a weak FP_BASE_NAME here to prevent the undefined symbol.
3605 And set FP equal to SDA_BASE to do relaxation for
3606 la $fp, _FP_BASE_. */
3607 if (!_bfd_generic_link_add_one_symbol
3608 (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK,
3609 first, sda_base, (const char *) NULL,
3610 FALSE, get_elf_backend_data (output_bfd)->collect, &h2))
3611 return FALSE;
3612 }
3613
3614 if (add_symbol)
3615 {
3616 if (h)
3617 {
3618 /* Now set gp. */
3619 elf_gp (output_bfd) = (h->u.def.value
3620 + h->u.def.section->output_section->vma
3621 + h->u.def.section->output_offset);
3622 }
3623 else
3624 {
3625 _bfd_error_handler (_("error: can't find symbol: %s"), "_SDA_BASE_");
3626 return bfd_reloc_dangerous;
3627 }
3628 }
3629
3630 *psb = h->u.def.value
3631 + h->u.def.section->output_section->vma
3632 + h->u.def.section->output_offset;
3633 return bfd_reloc_ok;
3634 }
3635 \f
3636
3637 /* Return size of a PLT entry. */
3638 #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE
3639
3640 /* Create an entry in an nds32 ELF linker hash table. */
3641
3642 static struct bfd_hash_entry *
3643 nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3644 struct bfd_hash_table *table,
3645 const char *string)
3646 {
3647 struct elf_nds32_link_hash_entry *ret;
3648
3649 ret = (struct elf_nds32_link_hash_entry *) entry;
3650
3651 /* Allocate the structure if it has not already been allocated by a
3652 subclass. */
3653 if (ret == NULL)
3654 ret = (struct elf_nds32_link_hash_entry *)
3655 bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry));
3656
3657 if (ret == NULL)
3658 return (struct bfd_hash_entry *) ret;
3659
3660 /* Call the allocation method of the superclass. */
3661 ret = (struct elf_nds32_link_hash_entry *)
3662 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string);
3663
3664 if (ret != NULL)
3665 {
3666 struct elf_nds32_link_hash_entry *eh;
3667
3668 eh = (struct elf_nds32_link_hash_entry *) ret;
3669 eh->tls_type = GOT_UNKNOWN;
3670 eh->offset_to_gp = 0;
3671 }
3672
3673 return (struct bfd_hash_entry *) ret;
3674 }
3675
3676 /* Create an nds32 ELF linker hash table. */
3677
3678 static struct bfd_link_hash_table *
3679 nds32_elf_link_hash_table_create (bfd *abfd)
3680 {
3681 struct elf_nds32_link_hash_table *ret;
3682
3683 size_t amt = sizeof (struct elf_nds32_link_hash_table);
3684
3685 ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt);
3686 if (ret == NULL)
3687 return NULL;
3688
3689 /* Patch tag. */
3690 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3691 nds32_elf_link_hash_newfunc,
3692 sizeof (struct elf_nds32_link_hash_entry),
3693 NDS32_ELF_DATA))
3694 {
3695 free (ret);
3696 return NULL;
3697 }
3698
3699 ret->sym_ld_script = NULL;
3700
3701 return &ret->root.root;
3702 }
3703
3704 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
3705 shortcuts to them in our hash table. */
3706
3707 static bfd_boolean
3708 create_got_section (bfd *dynobj, struct bfd_link_info *info)
3709 {
3710 struct elf_link_hash_table *ehtab;
3711
3712 if (!_bfd_elf_create_got_section (dynobj, info))
3713 return FALSE;
3714
3715 ehtab = elf_hash_table (info);
3716 ehtab->sgot = bfd_get_section_by_name (dynobj, ".got");
3717 ehtab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
3718 if (!ehtab->sgot || !ehtab->sgotplt)
3719 abort ();
3720
3721 /* _bfd_elf_create_got_section will create it for us. */
3722 ehtab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3723 if (ehtab->srelgot == NULL
3724 || !bfd_set_section_flags (ehtab->srelgot,
3725 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3726 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3727 | SEC_READONLY))
3728 || !bfd_set_section_alignment (ehtab->srelgot, 2))
3729 return FALSE;
3730
3731 return TRUE;
3732 }
3733
3734 /* Create dynamic sections when linking against a dynamic object. */
3735
3736 static bfd_boolean
3737 nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3738 {
3739 struct elf_link_hash_table *ehtab;
3740 struct elf_nds32_link_hash_table *htab;
3741 flagword flags, pltflags;
3742 register asection *s;
3743 const struct elf_backend_data *bed;
3744 int ptralign = 2; /* 32-bit */
3745 const char *secname;
3746 char *relname;
3747 flagword secflags;
3748 asection *sec;
3749
3750 bed = get_elf_backend_data (abfd);
3751 ehtab = elf_hash_table (info);
3752 htab = nds32_elf_hash_table (info);
3753
3754 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3755 .rel[a].bss sections. */
3756
3757 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3758 | SEC_LINKER_CREATED);
3759
3760 pltflags = flags;
3761 pltflags |= SEC_CODE;
3762 if (bed->plt_not_loaded)
3763 pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
3764 if (bed->plt_readonly)
3765 pltflags |= SEC_READONLY;
3766
3767 s = bfd_make_section (abfd, ".plt");
3768 ehtab->splt = s;
3769 if (s == NULL
3770 || !bfd_set_section_flags (s, pltflags)
3771 || !bfd_set_section_alignment (s, bed->plt_alignment))
3772 return FALSE;
3773
3774 if (bed->want_plt_sym)
3775 {
3776 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3777 .plt section. */
3778 struct bfd_link_hash_entry *bh = NULL;
3779 struct elf_link_hash_entry *h;
3780
3781 if (!(_bfd_generic_link_add_one_symbol
3782 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
3783 (bfd_vma) 0, (const char *) NULL, FALSE,
3784 get_elf_backend_data (abfd)->collect, &bh)))
3785 return FALSE;
3786
3787 h = (struct elf_link_hash_entry *) bh;
3788 h->def_regular = 1;
3789 h->type = STT_OBJECT;
3790
3791 if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h))
3792 return FALSE;
3793 }
3794
3795 s = bfd_make_section (abfd,
3796 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
3797 ehtab->srelplt = s;
3798 if (s == NULL
3799 || !bfd_set_section_flags (s, flags | SEC_READONLY)
3800 || !bfd_set_section_alignment (s, ptralign))
3801 return FALSE;
3802
3803 if (ehtab->sgot == NULL && !create_got_section (abfd, info))
3804 return FALSE;
3805
3806 for (sec = abfd->sections; sec; sec = sec->next)
3807 {
3808 secflags = bfd_section_flags (sec);
3809 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
3810 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
3811 continue;
3812 secname = bfd_section_name (sec);
3813 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
3814 strcpy (relname, ".rela");
3815 strcat (relname, secname);
3816 if (bfd_get_section_by_name (abfd, secname))
3817 continue;
3818 s = bfd_make_section (abfd, relname);
3819 if (s == NULL
3820 || !bfd_set_section_flags (s, flags | SEC_READONLY)
3821 || !bfd_set_section_alignment (s, ptralign))
3822 return FALSE;
3823 }
3824
3825 if (bed->want_dynbss)
3826 {
3827 /* The .dynbss section is a place to put symbols which are defined
3828 by dynamic objects, are referenced by regular objects, and are
3829 not functions. We must allocate space for them in the process
3830 image and use a R_*_COPY reloc to tell the dynamic linker to
3831 initialize them at run time. The linker script puts the .dynbss
3832 section into the .bss section of the final image. */
3833 s = bfd_make_section (abfd, ".dynbss");
3834 htab->root.sdynbss = s;
3835 if (s == NULL
3836 || !bfd_set_section_flags (s, SEC_ALLOC | SEC_LINKER_CREATED))
3837 return FALSE;
3838 /* The .rel[a].bss section holds copy relocs. This section is not
3839 normally needed. We need to create it here, though, so that the
3840 linker will map it to an output section. We can't just create it
3841 only if we need it, because we will not know whether we need it
3842 until we have seen all the input files, and the first time the
3843 main linker code calls BFD after examining all the input files
3844 (size_dynamic_sections) the input sections have already been
3845 mapped to the output sections. If the section turns out not to
3846 be needed, we can discard it later. We will never need this
3847 section when generating a shared object, since they do not use
3848 copy relocs. */
3849 if (!bfd_link_pic (info))
3850 {
3851 s = bfd_make_section (abfd, (bed->default_use_rela_p
3852 ? ".rela.bss" : ".rel.bss"));
3853 htab->root.srelbss = s;
3854 if (s == NULL
3855 || !bfd_set_section_flags (s, flags | SEC_READONLY)
3856 || !bfd_set_section_alignment (s, ptralign))
3857 return FALSE;
3858 }
3859 }
3860
3861 return TRUE;
3862 }
3863
3864 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3865 static void
3866 nds32_elf_copy_indirect_symbol (struct bfd_link_info *info,
3867 struct elf_link_hash_entry *dir,
3868 struct elf_link_hash_entry *ind)
3869 {
3870 struct elf_nds32_link_hash_entry *edir, *eind;
3871
3872 edir = (struct elf_nds32_link_hash_entry *) dir;
3873 eind = (struct elf_nds32_link_hash_entry *) ind;
3874
3875 if (ind->root.type == bfd_link_hash_indirect)
3876 {
3877 if (dir->got.refcount <= 0)
3878 {
3879 edir->tls_type = eind->tls_type;
3880 eind->tls_type = GOT_UNKNOWN;
3881 }
3882 }
3883
3884 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3885 }
3886 \f
3887 /* Adjust a symbol defined by a dynamic object and referenced by a
3888 regular object. The current definition is in some section of the
3889 dynamic object, but we're not including those sections. We have to
3890 change the definition to something the rest of the link can
3891 understand. */
3892
3893 static bfd_boolean
3894 nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3895 struct elf_link_hash_entry *h)
3896 {
3897 struct elf_nds32_link_hash_table *htab;
3898 bfd *dynobj;
3899 asection *s;
3900 unsigned int power_of_two;
3901
3902 dynobj = elf_hash_table (info)->dynobj;
3903
3904 /* Make sure we know what is going on here. */
3905 BFD_ASSERT (dynobj != NULL
3906 && (h->needs_plt
3907 || h->is_weakalias
3908 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
3909
3910
3911 /* If this is a function, put it in the procedure linkage table. We
3912 will fill in the contents of the procedure linkage table later,
3913 when we know the address of the .got section. */
3914 if (h->type == STT_FUNC || h->needs_plt)
3915 {
3916 if (!bfd_link_pic (info)
3917 && !h->def_dynamic
3918 && !h->ref_dynamic
3919 && h->root.type != bfd_link_hash_undefweak
3920 && h->root.type != bfd_link_hash_undefined)
3921 {
3922 /* This case can occur if we saw a PLT reloc in an input
3923 file, but the symbol was never referred to by a dynamic
3924 object. In such a case, we don't actually need to build
3925 a procedure linkage table, and we can just do a PCREL
3926 reloc instead. */
3927 h->plt.offset = (bfd_vma) - 1;
3928 h->needs_plt = 0;
3929 }
3930
3931 return TRUE;
3932 }
3933 else
3934 h->plt.offset = (bfd_vma) - 1;
3935
3936 /* If this is a weak symbol, and there is a real definition, the
3937 processor independent code will have arranged for us to see the
3938 real definition first, and we can just use the same value. */
3939 if (h->is_weakalias)
3940 {
3941 struct elf_link_hash_entry *def = weakdef (h);
3942 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
3943 h->root.u.def.section = def->root.u.def.section;
3944 h->root.u.def.value = def->root.u.def.value;
3945 return TRUE;
3946 }
3947
3948 /* This is a reference to a symbol defined by a dynamic object which
3949 is not a function. */
3950
3951 /* If we are creating a shared library, we must presume that the
3952 only references to the symbol are via the global offset table.
3953 For such cases we need not do anything here; the relocations will
3954 be handled correctly by relocate_section. */
3955 if (bfd_link_pic (info))
3956 return TRUE;
3957
3958 /* If there are no references to this symbol that do not use the
3959 GOT, we don't need to generate a copy reloc. */
3960 if (!h->non_got_ref)
3961 return TRUE;
3962
3963 /* If -z nocopyreloc was given, we won't generate them either. */
3964 if (0 && info->nocopyreloc)
3965 {
3966 h->non_got_ref = 0;
3967 return TRUE;
3968 }
3969
3970 /* If we don't find any dynamic relocs in read-only sections, then
3971 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3972 if (!_bfd_elf_readonly_dynrelocs (h))
3973 {
3974 h->non_got_ref = 0;
3975 return TRUE;
3976 }
3977
3978 /* We must allocate the symbol in our .dynbss section, which will
3979 become part of the .bss section of the executable. There will be
3980 an entry for this symbol in the .dynsym section. The dynamic
3981 object will contain position independent code, so all references
3982 from the dynamic object to this symbol will go through the global
3983 offset table. The dynamic linker will use the .dynsym entry to
3984 determine the address it must put in the global offset table, so
3985 both the dynamic object and the regular object will refer to the
3986 same memory location for the variable. */
3987
3988 htab = nds32_elf_hash_table (info);
3989 s = htab->root.sdynbss;
3990 BFD_ASSERT (s != NULL);
3991
3992 /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker
3993 to copy the initial value out of the dynamic object and into the
3994 runtime process image. We need to remember the offset into the
3995 .rela.bss section we are going to use. */
3996 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3997 {
3998 asection *srel;
3999
4000 srel = htab->root.srelbss;
4001 BFD_ASSERT (srel != NULL);
4002 srel->size += sizeof (Elf32_External_Rela);
4003 h->needs_copy = 1;
4004 }
4005
4006 /* We need to figure out the alignment required for this symbol. I
4007 have no idea how ELF linkers handle this. */
4008 power_of_two = bfd_log2 (h->size);
4009 if (power_of_two > 3)
4010 power_of_two = 3;
4011
4012 /* Apply the required alignment. */
4013 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4014 if (power_of_two > bfd_section_alignment (s))
4015 {
4016 if (!bfd_set_section_alignment (s, power_of_two))
4017 return FALSE;
4018 }
4019
4020 /* Define the symbol as being at this point in the section. */
4021 h->root.u.def.section = s;
4022 h->root.u.def.value = s->size;
4023
4024 /* Increment the section size to make room for the symbol. */
4025 s->size += h->size;
4026
4027 return TRUE;
4028 }
4029
4030 /* Allocate space in .plt, .got and associated reloc sections for
4031 dynamic relocs. */
4032
4033 static bfd_boolean
4034 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4035 {
4036 struct bfd_link_info *info;
4037 struct elf_link_hash_table *ehtab;
4038 struct elf_nds32_link_hash_table *htab;
4039 struct elf_dyn_relocs *p;
4040
4041 if (h->root.type == bfd_link_hash_indirect)
4042 return TRUE;
4043
4044 /* When warning symbols are created, they **replace** the "real"
4045 entry in the hash table, thus we never get to see the real
4046 symbol in a hash traversal. So look at it now. */
4047 if (h->root.type == bfd_link_hash_warning)
4048 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4049
4050 info = (struct bfd_link_info *) inf;
4051 ehtab = elf_hash_table (info);
4052 htab = nds32_elf_hash_table (info);
4053 if (htab == NULL)
4054 return FALSE;
4055
4056 if ((htab->root.dynamic_sections_created || h->type == STT_GNU_IFUNC)
4057 && h->plt.refcount > 0
4058 && !(bfd_link_pie (info) && h->def_regular))
4059 {
4060 /* Make sure this symbol is output as a dynamic symbol.
4061 Undefined weak syms won't yet be marked as dynamic. */
4062 if (h->dynindx == -1 && !h->forced_local)
4063 {
4064 if (!bfd_elf_link_record_dynamic_symbol (info, h))
4065 return FALSE;
4066 }
4067
4068 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
4069 {
4070 asection *s = ehtab->splt;
4071
4072 /* If this is the first .plt entry, make room for the special
4073 first entry. */
4074 if (s->size == 0)
4075 s->size += PLT_ENTRY_SIZE;
4076
4077 h->plt.offset = s->size;
4078
4079 /* If this symbol is not defined in a regular file, and we are
4080 not generating a shared library, then set the symbol to this
4081 location in the .plt. This is required to make function
4082 pointers compare as equal between the normal executable and
4083 the shared library. */
4084 if (!bfd_link_pic (info) && !h->def_regular)
4085 {
4086 h->root.u.def.section = s;
4087 h->root.u.def.value = h->plt.offset;
4088 }
4089
4090 /* Make room for this entry. */
4091 s->size += PLT_ENTRY_SIZE;
4092
4093 /* We also need to make an entry in the .got.plt section, which
4094 will be placed in the .got section by the linker script. */
4095 ehtab->sgotplt->size += 4;
4096
4097 /* We also need to make an entry in the .rel.plt section. */
4098 ehtab->srelplt->size += sizeof (Elf32_External_Rela);
4099 if (htab->tls_desc_trampoline)
4100 htab->next_tls_desc_index++;
4101 }
4102 else
4103 {
4104 h->plt.offset = (bfd_vma) - 1;
4105 h->needs_plt = 0;
4106 }
4107 }
4108 else
4109 {
4110 h->plt.offset = (bfd_vma) - 1;
4111 h->needs_plt = 0;
4112 }
4113
4114 if (h->got.refcount > 0)
4115 {
4116 asection *sgot;
4117 bfd_boolean dyn;
4118 int tls_type = elf32_nds32_hash_entry (h)->tls_type;
4119
4120 /* Make sure this symbol is output as a dynamic symbol.
4121 Undefined weak syms won't yet be marked as dynamic. */
4122 if (h->dynindx == -1 && !h->forced_local)
4123 {
4124 if (!bfd_elf_link_record_dynamic_symbol (info, h))
4125 return FALSE;
4126 }
4127
4128 sgot = elf_hash_table (info)->sgot;
4129 h->got.offset = sgot->size;
4130
4131 if (tls_type == GOT_UNKNOWN)
4132 abort ();
4133
4134 /* Non-TLS symbols, and TLS_IE need one GOT slot. */
4135 if (tls_type & (GOT_NORMAL | GOT_TLS_IE | GOT_TLS_IEGP))
4136 sgot->size += 4;
4137 else
4138 {
4139 /* TLS_DESC, TLS_GD, and TLS_LD need 2 consecutive GOT slots. */
4140 if (tls_type & GOT_TLS_DESC)
4141 sgot->size += 8;
4142 }
4143
4144 dyn = htab->root.dynamic_sections_created;
4145
4146 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
4147 {
4148 if (tls_type == GOT_TLS_DESC && htab->tls_desc_trampoline)
4149 {
4150 /* TLS_DESC with trampoline needs a relocation slot
4151 within .rela.plt. */
4152 htab->num_tls_desc++;
4153 ehtab->srelplt->size += sizeof (Elf32_External_Rela);
4154 htab->tls_trampoline = -1;
4155 }
4156 else
4157 {
4158 /* other relocations, including TLS_DESC without trampoline, need
4159 a relocation slot within .rela.got. */
4160 ehtab->srelgot->size += sizeof (Elf32_External_Rela);
4161 }
4162 }
4163 }
4164 else
4165 h->got.offset = (bfd_vma)-1;
4166
4167 if (h->dyn_relocs == NULL)
4168 return TRUE;
4169
4170 /* In the shared -Bsymbolic case, discard space allocated for
4171 dynamic pc-relative relocs against symbols which turn out to be
4172 defined in regular objects. For the normal shared case, discard
4173 space for pc-relative relocs that have become local due to symbol
4174 visibility changes. */
4175
4176 if (bfd_link_pic (info))
4177 {
4178 if (h->def_regular && (h->forced_local || info->symbolic))
4179 {
4180 struct elf_dyn_relocs **pp;
4181
4182 for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
4183 {
4184 p->count -= p->pc_count;
4185 p->pc_count = 0;
4186 if (p->count == 0)
4187 *pp = p->next;
4188 else
4189 pp = &p->next;
4190 }
4191 }
4192 }
4193 else
4194 {
4195 /* For the non-shared case, discard space for relocs against
4196 symbols which turn out to need copy relocs or are not dynamic. */
4197
4198 if (!h->non_got_ref
4199 && ((h->def_dynamic
4200 && !h->def_regular)
4201 || (htab->root.dynamic_sections_created
4202 && (h->root.type == bfd_link_hash_undefweak
4203 || h->root.type == bfd_link_hash_undefined))))
4204 {
4205 /* Make sure this symbol is output as a dynamic symbol.
4206 Undefined weak syms won't yet be marked as dynamic. */
4207 if (h->dynindx == -1 && !h->forced_local)
4208 {
4209 if (!bfd_elf_link_record_dynamic_symbol (info, h))
4210 return FALSE;
4211 }
4212
4213 /* If that succeeded, we know we'll be keeping all the
4214 relocs. */
4215 if (h->dynindx != -1)
4216 goto keep;
4217 }
4218
4219 h->dyn_relocs = NULL;
4220
4221 keep:;
4222 }
4223
4224 /* Finally, allocate space. */
4225 for (p = h->dyn_relocs; p != NULL; p = p->next)
4226 {
4227 asection *sreloc = elf_section_data (p->sec)->sreloc;
4228 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4229 }
4230
4231 return TRUE;
4232 }
4233
4234 /* Add relocation REL to the end of relocation section SRELOC. */
4235
4236 static void
4237 elf32_nds32_add_dynreloc (bfd *output_bfd,
4238 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4239 asection *sreloc, Elf_Internal_Rela *rel)
4240 {
4241 bfd_byte *loc;
4242 if (sreloc == NULL)
4243 abort ();
4244
4245 loc = sreloc->contents;
4246 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4247 if (sreloc->reloc_count * sizeof (Elf32_External_Rela) > sreloc->size)
4248 abort ();
4249
4250 bfd_elf32_swap_reloca_out (output_bfd, rel, loc);
4251 }
4252
4253 /* Set the sizes of the dynamic sections. */
4254
4255 static bfd_boolean
4256 nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4257 struct bfd_link_info *info)
4258 {
4259 struct elf_nds32_link_hash_table *htab;
4260 bfd *dynobj;
4261 asection *s;
4262 bfd_boolean relocs;
4263 bfd *ibfd;
4264
4265 htab = nds32_elf_hash_table (info);
4266 if (htab == NULL)
4267 return FALSE;
4268
4269 dynobj = elf_hash_table (info)->dynobj;
4270 BFD_ASSERT (dynobj != NULL);
4271
4272 if (elf_hash_table (info)->dynamic_sections_created)
4273 {
4274 /* Set the contents of the .interp section to the interpreter. */
4275 if (bfd_link_executable (info) && !info->nointerp)
4276 {
4277 s = bfd_get_section_by_name (dynobj, ".interp");
4278 BFD_ASSERT (s != NULL);
4279 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4280 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4281 }
4282 }
4283
4284 /* Set up .got offsets for local syms, and space for local dynamic
4285 relocs. */
4286 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
4287 {
4288 bfd_signed_vma *local_got;
4289 bfd_signed_vma *end_local_got;
4290 bfd_size_type locsymcount;
4291 Elf_Internal_Shdr *symtab_hdr;
4292 asection *sgot;
4293 char *local_tls_type;
4294 unsigned long symndx;
4295 bfd_vma *local_tlsdesc_gotent;
4296
4297 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4298 continue;
4299
4300 for (s = ibfd->sections; s != NULL; s = s->next)
4301 {
4302 struct elf_dyn_relocs *p;
4303
4304 for (p = ((struct elf_dyn_relocs *)
4305 elf_section_data (s)->local_dynrel);
4306 p != NULL; p = p->next)
4307 {
4308 if (!bfd_is_abs_section (p->sec)
4309 && bfd_is_abs_section (p->sec->output_section))
4310 {
4311 /* Input section has been discarded, either because
4312 it is a copy of a linkonce section or due to
4313 linker script /DISCARD/, so we'll be discarding
4314 the relocs too. */
4315 }
4316 else if (p->count != 0)
4317 {
4318 asection *sreloc = elf_section_data (p->sec)->sreloc;
4319 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4320 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4321 info->flags |= DF_TEXTREL;
4322 }
4323 }
4324 }
4325
4326 local_got = elf_local_got_refcounts (ibfd);
4327 if (!local_got)
4328 continue;
4329
4330 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4331 locsymcount = symtab_hdr->sh_info;
4332 end_local_got = local_got + locsymcount;
4333 sgot = elf_hash_table (info)->sgot;
4334 local_tls_type = elf32_nds32_local_got_tls_type (ibfd);
4335 local_tlsdesc_gotent = elf32_nds32_local_tlsdesc_gotent (ibfd);
4336 for (symndx = 0; local_got < end_local_got;
4337 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent, ++symndx)
4338 {
4339 if (*local_got > 0)
4340 {
4341 int num_of_got_entry_needed = 0;
4342 *local_got = sgot->size;
4343 *local_tlsdesc_gotent = sgot->size;
4344
4345 /* TLS_NORMAL, and TLS_IE need one slot in .got. */
4346 if (*local_tls_type & (GOT_NORMAL | GOT_TLS_IE | GOT_TLS_IEGP))
4347 num_of_got_entry_needed = 1;
4348 /* TLS_GD, TLS_LD, and TLS_DESC need an 8-byte structure in the GOT. */
4349 else if (*local_tls_type & GOT_TLS_DESC)
4350 num_of_got_entry_needed = 2;
4351
4352 sgot->size += (num_of_got_entry_needed << 2);
4353
4354 /* non-relax-able TLS_DESCs need a slot in .rela.plt.
4355 others need a slot in .rela.got. */
4356 if (*local_tls_type == GOT_TLS_DESC)
4357 {
4358 if (bfd_link_pic (info))
4359 {
4360 if (htab->tls_desc_trampoline)
4361 {
4362 htab->num_tls_desc++;
4363 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
4364 htab->tls_trampoline = -1;
4365 }
4366 else
4367 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
4368 }
4369 else
4370 {
4371 /* TLS_DESC -> TLS_LE */
4372 }
4373 }
4374 else
4375 {
4376 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
4377 }
4378 }
4379 else
4380 {
4381 *local_got = (bfd_vma) -1;
4382 *local_tlsdesc_gotent = (bfd_vma) -1;
4383 }
4384 }
4385 }
4386
4387 /* Allocate global sym .plt and .got entries, and space for global
4388 sym dynamic relocs. */
4389 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info);
4390
4391 /* For every jump slot reserved in the sgotplt, reloc_count is
4392 incremented. However, when we reserve space for TLS descriptors,
4393 it's not incremented, so in order to compute the space reserved
4394 for them, it suffices to multiply the reloc count by the jump
4395 slot size. */
4396 if (htab->tls_desc_trampoline && htab->root.srelplt)
4397 htab->sgotplt_jump_table_size = elf32_nds32_compute_jump_table_size (htab);
4398
4399 if (htab->tls_trampoline)
4400 {
4401 htab->tls_trampoline = htab->root.splt->size;
4402
4403 /* If we're not using lazy TLS relocations, don't generate the
4404 PLT and GOT entries they require. */
4405 if ((info->flags & DF_BIND_NOW))
4406 htab->root.tlsdesc_plt = 0;
4407 else
4408 {
4409 htab->root.tlsdesc_got = htab->root.sgot->size;
4410 htab->root.sgot->size += 4;
4411
4412 htab->root.tlsdesc_plt = htab->root.splt->size;
4413 htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline);
4414 }
4415 }
4416
4417 /* We now have determined the sizes of the various dynamic sections.
4418 Allocate memory for them. */
4419 /* The check_relocs and adjust_dynamic_symbol entry points have
4420 determined the sizes of the various dynamic sections. Allocate
4421 memory for them. */
4422 relocs = FALSE;
4423 for (s = dynobj->sections; s != NULL; s = s->next)
4424 {
4425 if ((s->flags & SEC_LINKER_CREATED) == 0)
4426 continue;
4427
4428 if (s == htab->root.splt)
4429 {
4430 /* Strip this section if we don't need it; see the
4431 comment below. */
4432 ;
4433 }
4434 else if (s == elf_hash_table (info)->sgot)
4435 {
4436 got_size += s->size;
4437 }
4438 else if (s == elf_hash_table (info)->sgotplt)
4439 {
4440 got_size += s->size;
4441 }
4442 else if (strncmp (bfd_section_name (s), ".rela", 5) == 0)
4443 {
4444 if (s->size != 0 && s != elf_hash_table (info)->srelplt)
4445 relocs = TRUE;
4446
4447 /* We use the reloc_count field as a counter if we need
4448 to copy relocs into the output file. */
4449 s->reloc_count = 0;
4450 }
4451 else
4452 {
4453 /* It's not one of our sections, so don't allocate space. */
4454 continue;
4455 }
4456
4457 if (s->size == 0)
4458 {
4459 /* If we don't need this section, strip it from the
4460 output file. This is mostly to handle .rela.bss and
4461 .rela.plt. We must create both sections in
4462 create_dynamic_sections, because they must be created
4463 before the linker maps input sections to output
4464 sections. The linker does that before
4465 adjust_dynamic_symbol is called, and it is that
4466 function which decides whether anything needs to go
4467 into these sections. */
4468 s->flags |= SEC_EXCLUDE;
4469 continue;
4470 }
4471
4472 /* Allocate memory for the section contents. We use bfd_zalloc
4473 here in case unused entries are not reclaimed before the
4474 section's contents are written out. This should not happen,
4475 but this way if it does, we get a R_NDS32_NONE reloc instead
4476 of garbage. */
4477 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4478 if (s->contents == NULL)
4479 return FALSE;
4480 }
4481
4482 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
4483 }
4484
4485 static bfd_reloc_status_type
4486 nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd,
4487 bfd_vma relocation, bfd_byte *location)
4488 {
4489 int size;
4490 bfd_vma x = 0;
4491 bfd_reloc_status_type flag;
4492 unsigned int rightshift = howto->rightshift;
4493 unsigned int bitpos = howto->bitpos;
4494
4495 if (howto->negate)
4496 relocation = -relocation;
4497
4498 /* Get the value we are going to relocate. */
4499 size = bfd_get_reloc_size (howto);
4500 switch (size)
4501 {
4502 default:
4503 abort ();
4504 break;
4505 case 0:
4506 return bfd_reloc_ok;
4507 case 2:
4508 x = bfd_getb16 (location);
4509 break;
4510 case 4:
4511 x = bfd_getb32 (location);
4512 break;
4513 }
4514
4515 /* Check for overflow. FIXME: We may drop bits during the addition
4516 which we don't check for. We must either check at every single
4517 operation, which would be tedious, or we must do the computations
4518 in a type larger than bfd_vma, which would be inefficient. */
4519 flag = bfd_reloc_ok;
4520 if (howto->complain_on_overflow != complain_overflow_dont)
4521 {
4522 bfd_vma addrmask, fieldmask, signmask, ss;
4523 bfd_vma a, b, sum;
4524
4525 /* Get the values to be added together. For signed and unsigned
4526 relocations, we assume that all values should be truncated to
4527 the size of an address. For bitfields, all the bits matter.
4528 See also bfd_check_overflow. */
4529 fieldmask = N_ONES (howto->bitsize);
4530 signmask = ~fieldmask;
4531 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
4532 a = (relocation & addrmask) >> rightshift;
4533 b = (x & howto->src_mask & addrmask) >> bitpos;
4534
4535 switch (howto->complain_on_overflow)
4536 {
4537 case complain_overflow_signed:
4538 /* If any sign bits are set, all sign bits must be set.
4539 That is, A must be a valid negative address after
4540 shifting. */
4541 signmask = ~(fieldmask >> 1);
4542 /* Fall through. */
4543
4544 case complain_overflow_bitfield:
4545 /* Much like the signed check, but for a field one bit
4546 wider. We allow a bitfield to represent numbers in the
4547 range -2**n to 2**n-1, where n is the number of bits in the
4548 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4549 can't overflow, which is exactly what we want. */
4550 ss = a & signmask;
4551 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
4552 flag = bfd_reloc_overflow;
4553
4554 /* We only need this next bit of code if the sign bit of B
4555 is below the sign bit of A. This would only happen if
4556 SRC_MASK had fewer bits than BITSIZE. Note that if
4557 SRC_MASK has more bits than BITSIZE, we can get into
4558 trouble; we would need to verify that B is in range, as
4559 we do for A above. */
4560 ss = ((~howto->src_mask) >> 1) & howto->src_mask;
4561 ss >>= bitpos;
4562
4563 /* Set all the bits above the sign bit. */
4564 b = (b ^ ss) - ss;
4565
4566 /* Now we can do the addition. */
4567 sum = a + b;
4568
4569 /* See if the result has the correct sign. Bits above the
4570 sign bit are junk now; ignore them. If the sum is
4571 positive, make sure we did not have all negative inputs;
4572 if the sum is negative, make sure we did not have all
4573 positive inputs. The test below looks only at the sign
4574 bits, and it really just
4575 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4576
4577 We mask with addrmask here to explicitly allow an address
4578 wrap-around. The Linux kernel relies on it, and it is
4579 the only way to write assembler code which can run when
4580 loaded at a location 0x80000000 away from the location at
4581 which it is linked. */
4582 if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask)
4583 flag = bfd_reloc_overflow;
4584
4585 break;
4586
4587 case complain_overflow_unsigned:
4588 /* Checking for an unsigned overflow is relatively easy:
4589 trim the addresses and add, and trim the result as well.
4590 Overflow is normally indicated when the result does not
4591 fit in the field. However, we also need to consider the
4592 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4593 input is 0x80000000, and bfd_vma is only 32 bits; then we
4594 will get sum == 0, but there is an overflow, since the
4595 inputs did not fit in the field. Instead of doing a
4596 separate test, we can check for this by or-ing in the
4597 operands when testing for the sum overflowing its final
4598 field. */
4599 sum = (a + b) & addrmask;
4600 if ((a | b | sum) & signmask)
4601 flag = bfd_reloc_overflow;
4602 break;
4603
4604 default:
4605 abort ();
4606 }
4607 }
4608
4609 /* Put RELOCATION in the right bits. */
4610 relocation >>= (bfd_vma) rightshift;
4611 relocation <<= (bfd_vma) bitpos;
4612
4613 /* Add RELOCATION to the right bits of X. */
4614 /* FIXME : 090616
4615 Because the relaxation may generate duplicate relocation at one address,
4616 an addition to immediate in the instruction may cause the relocation added
4617 several times.
4618 This bug should be fixed in assembler, but a check is also needed here. */
4619 if (howto->partial_inplace)
4620 x = ((x & ~howto->dst_mask)
4621 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
4622 else
4623 x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask));
4624
4625
4626 /* Put the relocated value back in the object file. */
4627 switch (size)
4628 {
4629 default:
4630 case 0:
4631 case 1:
4632 case 8:
4633 abort ();
4634 break;
4635 case 2:
4636 bfd_putb16 (x, location);
4637 break;
4638 case 4:
4639 bfd_putb32 (x, location);
4640 break;
4641 }
4642
4643 return flag;
4644 }
4645
4646 static bfd_reloc_status_type
4647 nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
4648 asection *input_section, bfd_byte *contents,
4649 bfd_vma address, bfd_vma value, bfd_vma addend)
4650 {
4651 bfd_vma relocation;
4652
4653 /* Sanity check the address. */
4654 if (address > bfd_get_section_limit (input_bfd, input_section))
4655 return bfd_reloc_outofrange;
4656
4657 /* This function assumes that we are dealing with a basic relocation
4658 against a symbol. We want to compute the value of the symbol to
4659 relocate to. This is just VALUE, the value of the symbol, plus
4660 ADDEND, any addend associated with the reloc. */
4661 relocation = value + addend;
4662
4663 /* If the relocation is PC relative, we want to set RELOCATION to
4664 the distance between the symbol (currently in RELOCATION) and the
4665 location we are relocating. If pcrel_offset is FALSE we do not
4666 need to subtract out the offset of the location within the
4667 section (which is just ADDRESS). */
4668 if (howto->pc_relative)
4669 {
4670 relocation -= (input_section->output_section->vma
4671 + input_section->output_offset);
4672 if (howto->pcrel_offset)
4673 relocation -= address;
4674 }
4675
4676 return nds32_relocate_contents (howto, input_bfd, relocation,
4677 contents + address);
4678 }
4679
4680 static bfd_boolean
4681 nds32_elf_output_symbol_hook (struct bfd_link_info *info,
4682 const char *name,
4683 Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED,
4684 asection *input_sec,
4685 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4686 {
4687 const char *source;
4688 FILE *sym_ld_script = NULL;
4689 struct elf_nds32_link_hash_table *table;
4690
4691 table = nds32_elf_hash_table (info);
4692 sym_ld_script = table->sym_ld_script;
4693 if (!sym_ld_script)
4694 return TRUE;
4695
4696 if (!h || !name || *name == '\0')
4697 return TRUE;
4698
4699 if (input_sec->flags & SEC_EXCLUDE)
4700 return TRUE;
4701
4702 if (!check_start_export_sym)
4703 {
4704 fprintf (sym_ld_script, "SECTIONS\n{\n");
4705 check_start_export_sym = 1;
4706 }
4707
4708 if (h->root.type == bfd_link_hash_defined
4709 || h->root.type == bfd_link_hash_defweak)
4710 {
4711 if (!h->root.u.def.section->output_section)
4712 return TRUE;
4713
4714 if (bfd_is_const_section (input_sec))
4715 source = input_sec->name;
4716 else
4717 source = bfd_get_filename (input_sec->owner);
4718
4719 fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n",
4720 h->root.root.string,
4721 (long) (h->root.u.def.value
4722 + h->root.u.def.section->output_section->vma
4723 + h->root.u.def.section->output_offset), source);
4724 }
4725
4726 return TRUE;
4727 }
4728
4729 /* Relocate an NDS32/D ELF section.
4730 There is some attempt to make this function usable for many architectures,
4731 both for RELA and REL type relocs, if only to serve as a learning tool.
4732
4733 The RELOCATE_SECTION function is called by the new ELF backend linker
4734 to handle the relocations for a section.
4735
4736 The relocs are always passed as Rela structures; if the section
4737 actually uses Rel structures, the r_addend field will always be
4738 zero.
4739
4740 This function is responsible for adjust the section contents as
4741 necessary, and (if using Rela relocs and generating a
4742 relocatable output file) adjusting the reloc addend as
4743 necessary.
4744
4745 This function does not have to worry about setting the reloc
4746 address or the reloc symbol index.
4747
4748 LOCAL_SYMS is a pointer to the swapped in local symbols.
4749
4750 LOCAL_SECTIONS is an array giving the section in the input file
4751 corresponding to the st_shndx field of each local symbol.
4752
4753 The global hash table entry for the global symbols can be found
4754 via elf_sym_hashes (input_bfd).
4755
4756 When generating relocatable output, this function must handle
4757 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4758 going to be the section symbol corresponding to the output
4759 section, which means that the addend must be adjusted
4760 accordingly. */
4761
4762 /* Return the base VMA address which should be subtracted from real addresses
4763 when resolving @dtpoff relocation.
4764 This is PT_TLS segment p_vaddr. */
4765
4766 /* Return the relocation value for @tpoff relocation
4767 if STT_TLS virtual address is ADDRESS. */
4768
4769 /* Return the relocation value for @gottpoff relocation
4770 if STT_TLS virtual address is ADDRESS. */
4771
4772 static bfd_vma
4773 gottpoff (struct bfd_link_info *info, bfd_vma address)
4774 {
4775 bfd_vma tp_base;
4776 bfd_vma tp_offset;
4777
4778 /* If tls_sec is NULL, we should have signalled an error already. */
4779 if (elf_hash_table (info)->tls_sec == NULL)
4780 return 0;
4781
4782 tp_base = elf_hash_table (info)->tls_sec->vma;
4783 tp_offset = address - tp_base;
4784
4785 return tp_offset;
4786 }
4787
4788 static bfd_boolean
4789 patch_tls_desc_to_ie (bfd_byte *contents, Elf_Internal_Rela *rel, bfd *ibfd)
4790 {
4791 /* TLS_GD/TLS_LD model #1
4792 46 00 00 00 sethi $r0,#0x0
4793 58 00 00 00 ori $r0,$r0,#0x0
4794 40 00 74 00 add $r0,$r0,$gp
4795 04 10 00 00 lwi $r1,[$r0+#0x0]
4796 4b e0 04 01 jral $lp,$r1 */
4797
4798 /* TLS_GD/TLS_LD model #2
4799 46 00 00 00 sethi $r0,#0x0
4800 58 00 00 00 ori $r0,$r0,#0x0
4801 38 10 74 02 lw $r1,[$r0+($gp<<#0x0)]
4802 40 00 74 00 add $r0,$r0,$gp
4803 4b e0 04 01 jral $lp,$r1 */
4804
4805 /* TLS_IE model (non-PIC)
4806 46 00 00 00 sethi $r0,#0x0
4807 04 00 00 00 lwi $r0,[$r0+#0x0]
4808 38 00 64 02 lw $r0,[$r0+($r25<<#0x0)] */
4809
4810 /* TLS_IE model (PIC)
4811 46 00 00 00 sethi $r0,#0x0
4812 58 00 00 00 ori $r0,$r0,#0x0
4813 38 00 74 02 lw $r0,[$r0+($gp<<#0x0)]
4814 38 00 64 02 lw $r0,[$r0+($r25<<#0x0)] */
4815
4816 /* TLS_GD_TO_IE model
4817 46 00 00 00 sethi $r0,#0x0
4818 58 00 00 00 ori $r0,$r0,#0x0
4819 40 00 74 00 add $r0,$rM,$gp
4820 04 00 00 01 lwi $r0,[$r0+#0x4]
4821 40 00 64 00 add $r0,$r0,$r25 */
4822
4823 bfd_boolean rz = FALSE;
4824
4825 typedef struct
4826 {
4827 uint32_t opcode;
4828 uint32_t mask;
4829 } pat_t;
4830
4831 uint32_t patch[3] =
4832 {
4833 0x40007400, /* add $r0,$rM,$gp */
4834 0x04000001, /* lwi $r0,[$r0+#0x4] */
4835 0x40006400, /* add $r0,$r0,$r25 */
4836 };
4837
4838 pat_t mode0[3] =
4839 {
4840 { 0x40000000, 0xfe0003ff },
4841 { 0x04000000, 0xfe000000 },
4842 { 0x4be00001, 0xffff83ff },
4843 };
4844
4845 pat_t mode1[3] =
4846 {
4847 { 0x38007402, 0xfe007fff },
4848 { 0x40007400, 0xfe007fff },
4849 { 0x4be00001, 0xffff83ff },
4850 };
4851
4852 unsigned char *p = contents + rel->r_offset;
4853
4854 uint32_t insn;
4855 uint32_t regidx = 0;
4856 insn = bfd_getb32 (p);
4857 if (INSN_SETHI == (0xfe0fffffu & insn))
4858 {
4859 regidx = 0x1f & (insn >> 20);
4860 p += 4;
4861 }
4862
4863 insn = bfd_getb32 (p);
4864 if (INSN_ORI == (0xfe007fffu & insn))
4865 {
4866 regidx = 0x1f & (insn >> 20);
4867 p += 4;
4868 }
4869
4870 if (patch[2] == bfd_getb32 (p + 8)) /* Character instruction. */
4871 {
4872 /* already patched? */
4873 if ((patch[0] == (0xfff07fffu & bfd_getb32 (p + 0))) &&
4874 (patch[1] == bfd_getb32 (p + 4)))
4875 rz = TRUE;
4876 }
4877 else if (mode0[0].opcode == (mode0[0].mask & bfd_getb32 (p + 0)))
4878 {
4879 if ((mode0[1].opcode == (mode0[1].mask & bfd_getb32 (p + 4))) &&
4880 (mode0[2].opcode == (mode0[2].mask & bfd_getb32 (p + 8))))
4881 {
4882 bfd_putb32 (patch[0] | (regidx << 15), p + 0);
4883 bfd_putb32 (patch[1], p + 4);
4884 bfd_putb32 (patch[2], p + 8);
4885 rz = TRUE;
4886 }
4887 }
4888 else if (mode1[0].opcode == (mode1[0].mask & bfd_getb32 (p + 0)))
4889 {
4890 if ((mode1[1].opcode == (mode1[1].mask & bfd_getb32 (p + 4))) &&
4891 (mode1[2].opcode == (mode1[2].mask & bfd_getb32 (p + 8))))
4892 {
4893 bfd_putb32 (patch[0] | (regidx << 15), p + 0);
4894 bfd_putb32 (patch[1], p + 4);
4895 bfd_putb32 (patch[2], p + 8);
4896 rz = TRUE;
4897 }
4898 }
4899
4900 if (!rz)
4901 {
4902 printf ("%s: %s @ 0x%08x\n", __func__, bfd_get_filename (ibfd),
4903 (int) rel->r_offset);
4904 BFD_ASSERT(0); /* Unsupported pattern. */
4905 }
4906
4907 return rz;
4908 }
4909
4910 static enum elf_nds32_tls_type
4911 get_tls_type (enum elf_nds32_reloc_type r_type, struct elf_link_hash_entry *h);
4912
4913 static unsigned int
4914 ones32 (register unsigned int x)
4915 {
4916 /* 32-bit recursive reduction using SWAR...
4917 but first step is mapping 2-bit values
4918 into sum of 2 1-bit values in sneaky way. */
4919 x -= ((x >> 1) & 0x55555555);
4920 x = (((x >> 2) & 0x33333333) + (x & 0x33333333));
4921 x = (((x >> 4) + x) & 0x0f0f0f0f);
4922 x += (x >> 8);
4923 x += (x >> 16);
4924 return (x & 0x0000003f);
4925 }
4926
4927 #if !HAVE_FLS
4928 static unsigned int
4929 fls (register unsigned int x)
4930 {
4931 return ffs (x & (-x));
4932 }
4933 #endif /* !HAVE_FLS */
4934
4935 #define nds32_elf_local_tlsdesc_gotent(bfd) \
4936 (elf_nds32_tdata (bfd)->local_tlsdesc_gotent)
4937
4938 static bfd_boolean
4939 nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
4940 struct bfd_link_info * info,
4941 bfd * input_bfd,
4942 asection * input_section,
4943 bfd_byte * contents,
4944 Elf_Internal_Rela * relocs,
4945 Elf_Internal_Sym * local_syms,
4946 asection ** local_sections)
4947 {
4948 Elf_Internal_Shdr *symtab_hdr;
4949 struct elf_link_hash_entry **sym_hashes;
4950 Elf_Internal_Rela *rel, *relend;
4951 bfd_boolean ret = TRUE; /* Assume success. */
4952 int align = 0;
4953 bfd_reloc_status_type r;
4954 const char *errmsg = NULL;
4955 bfd_vma gp;
4956 struct elf_link_hash_table *ehtab;
4957 struct elf_nds32_link_hash_table *htab;
4958 bfd *dynobj;
4959 bfd_vma *local_got_offsets;
4960 asection *sgot, *splt, *sreloc;
4961 bfd_vma high_address;
4962 struct elf_nds32_link_hash_table *table;
4963 int eliminate_gc_relocs;
4964 bfd_vma fpbase_addr;
4965
4966 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4967 sym_hashes = elf_sym_hashes (input_bfd);
4968 ehtab = elf_hash_table (info);
4969 htab = nds32_elf_hash_table (info);
4970 high_address = bfd_get_section_limit (input_bfd, input_section);
4971
4972 dynobj = htab->root.dynobj;
4973 local_got_offsets = elf_local_got_offsets (input_bfd);
4974
4975 sgot = ehtab->sgot;
4976 splt = ehtab->splt;
4977 sreloc = NULL;
4978
4979 rel = relocs;
4980 relend = relocs + input_section->reloc_count;
4981
4982 table = nds32_elf_hash_table (info);
4983 eliminate_gc_relocs = table->eliminate_gc_relocs;
4984
4985 /* By this time, we can adjust the value of _SDA_BASE_. */
4986 /* Explain _SDA_BASE_ */
4987 if ((!bfd_link_relocatable (info)))
4988 {
4989 is_SDA_BASE_set = 1;
4990 r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE);
4991 if (r != bfd_reloc_ok)
4992 return FALSE;
4993 }
4994
4995 /* Do TLS model conversion once at first. */
4996 nds32_elf_unify_tls_model (input_bfd, input_section, contents, info);
4997
4998 /* Use gp as fp to prevent truncated fit. Because in relaxation time
4999 the fp value is set as gp, and it has be reverted for instruction
5000 setting fp. */
5001 fpbase_addr = elf_gp (output_bfd);
5002
5003 /* Deal with (dynamic) relocations. */
5004 for (rel = relocs; rel < relend; rel++)
5005 {
5006 enum elf_nds32_reloc_type r_type;
5007 reloc_howto_type *howto = NULL;
5008 unsigned long r_symndx;
5009 struct elf_link_hash_entry *h = NULL;
5010 Elf_Internal_Sym *sym = NULL;
5011 asection *sec;
5012 bfd_vma relocation;
5013 bfd_vma relocation_sym = 0xdeadbeef;
5014 Elf_Internal_Rela *lorel;
5015 bfd_vma off;
5016
5017 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
5018 ensure it's zero (we use REL relocs, not RELA). Therefore this
5019 should be assigning zero to `addend', but for clarity we use
5020 `r_addend'. */
5021
5022 bfd_vma addend = rel->r_addend;
5023 bfd_vma offset = rel->r_offset;
5024
5025 r_type = ELF32_R_TYPE (rel->r_info);
5026 if (r_type >= R_NDS32_max)
5027 {
5028 /* xgettext:c-format */
5029 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
5030 input_bfd, r_type);
5031 bfd_set_error (bfd_error_bad_value);
5032 ret = FALSE;
5033 continue;
5034 }
5035
5036 if (r_type == R_NDS32_GNU_VTENTRY
5037 || r_type == R_NDS32_GNU_VTINHERIT
5038 || r_type == R_NDS32_NONE
5039 || r_type == R_NDS32_RELA_GNU_VTENTRY
5040 || r_type == R_NDS32_RELA_GNU_VTINHERIT
5041 || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA)
5042 || r_type == R_NDS32_DATA
5043 || r_type == R_NDS32_TRAN)
5044 continue;
5045
5046 /* If we enter the fp-as-gp region. Resolve the address
5047 of best fp-base. */
5048 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN
5049 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
5050 {
5051 int dist;
5052
5053 /* Distance to relocation of best fp-base is encoded in R_SYM. */
5054 dist = rel->r_addend >> 16;
5055 fpbase_addr = calculate_memory_address (input_bfd, rel + dist,
5056 local_syms, symtab_hdr);
5057 }
5058 else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END
5059 && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
5060 {
5061 fpbase_addr = elf_gp (output_bfd);
5062 }
5063
5064 /* Skip the relocations used for relaxation. */
5065 /* We have to update LONGCALL and LONGJUMP
5066 relocations when generating the relocatable files. */
5067 if (!bfd_link_relocatable (info)
5068 && (r_type >= R_NDS32_RELAX_ENTRY
5069 || (r_type >= R_NDS32_LONGCALL4
5070 && r_type <= R_NDS32_LONGJUMP7)))
5071 continue;
5072
5073 howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type);
5074 r_symndx = ELF32_R_SYM (rel->r_info);
5075
5076 /* This is a final link. */
5077 sym = NULL;
5078 sec = NULL;
5079 h = NULL;
5080
5081 if (r_symndx < symtab_hdr->sh_info)
5082 {
5083 /* Local symbol. */
5084 sym = local_syms + r_symndx;
5085 sec = local_sections[r_symndx];
5086
5087 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5088 addend = rel->r_addend;
5089
5090 /* keep symbol location for static TLS_IE GOT entry */
5091 relocation_sym = relocation;
5092 if (bfd_link_relocatable (info))
5093 {
5094 /* This is a relocatable link. We don't have to change
5095 anything, unless the reloc is against a section symbol,
5096 in which case we have to adjust according to where the
5097 section symbol winds up in the output section. */
5098 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5099 rel->r_addend += sec->output_offset + sym->st_value;
5100
5101 continue;
5102 }
5103 }
5104 else
5105 {
5106 /* External symbol. */
5107 if (bfd_link_relocatable (info))
5108 continue;
5109 bfd_boolean warned, ignored, unresolved_reloc;
5110 int symndx = r_symndx - symtab_hdr->sh_info;
5111
5112 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5113 r_symndx, symtab_hdr, sym_hashes, h, sec,
5114 relocation, unresolved_reloc, warned,
5115 ignored);
5116
5117 /* keep symbol location for static TLS_IE GOT entry */
5118 relocation_sym = relocation;
5119
5120 /* la $fp, _FP_BASE_ is per-function (region).
5121 Handle it specially. */
5122 switch ((int) r_type)
5123 {
5124 case R_NDS32_HI20_RELA:
5125 case R_NDS32_LO12S0_RELA:
5126 if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string,
5127 FP_BASE_NAME) == 0)
5128 {
5129 if (!bfd_link_pie (info))
5130 {
5131 _bfd_error_handler
5132 ("%pB: warning: _FP_BASE_ setting insns relaxation failed.",
5133 input_bfd);
5134 }
5135 relocation = fpbase_addr;
5136 }
5137 break;
5138 case R_NDS32_SDA19S0_RELA:
5139 case R_NDS32_SDA15S0_RELA:
5140 case R_NDS32_20_RELA:
5141 if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string,
5142 FP_BASE_NAME) == 0)
5143 {
5144 relocation = fpbase_addr;
5145 break;
5146 }
5147 }
5148 }
5149
5150 /* Sanity check the address. */
5151 if (offset > high_address)
5152 {
5153 r = bfd_reloc_outofrange;
5154 goto check_reloc;
5155 }
5156
5157 if (r_type >= R_NDS32_RELAX_ENTRY)
5158 continue;
5159
5160 switch ((int) r_type)
5161 {
5162 case R_NDS32_GOTOFF:
5163 /* Relocation is relative to the start of the global offset
5164 table (for ld24 rx, #uimm24), e.g. access at label+addend
5165
5166 ld24 rx. #label@GOTOFF + addend
5167 sub rx, r12. */
5168 case R_NDS32_GOTOFF_HI20:
5169 case R_NDS32_GOTOFF_LO12:
5170 case R_NDS32_GOTOFF_LO15:
5171 case R_NDS32_GOTOFF_LO19:
5172 BFD_ASSERT (sgot != NULL);
5173
5174 relocation -= elf_gp (output_bfd);
5175 break;
5176
5177 case R_NDS32_9_PLTREL:
5178 case R_NDS32_25_PLTREL:
5179 /* Relocation is to the entry for this symbol in the
5180 procedure linkage table. */
5181
5182 /* The native assembler will generate a 25_PLTREL reloc
5183 for a local symbol if you assemble a call from one
5184 section to another when using -K pic. */
5185 if (h == NULL)
5186 break;
5187
5188 if (h->forced_local)
5189 break;
5190
5191 /* We didn't make a PLT entry for this symbol. This
5192 happens when statically linking PIC code, or when
5193 using -Bsymbolic. */
5194 if (h->plt.offset == (bfd_vma) - 1)
5195 break;
5196
5197 relocation = (splt->output_section->vma
5198 + splt->output_offset + h->plt.offset);
5199 break;
5200
5201 case R_NDS32_PLT_GOTREL_HI20:
5202 case R_NDS32_PLT_GOTREL_LO12:
5203 case R_NDS32_PLT_GOTREL_LO15:
5204 case R_NDS32_PLT_GOTREL_LO19:
5205 case R_NDS32_PLT_GOTREL_LO20:
5206 if (h == NULL
5207 || h->forced_local
5208 || h->plt.offset == (bfd_vma) -1
5209 || (bfd_link_pie (info) && h->def_regular))
5210 {
5211 /* Maybe we should find better checking to optimize
5212 PIE PLT relocations. */
5213 /* We didn't make a PLT entry for this symbol. This
5214 happens when statically linking PIC code, or when
5215 using -Bsymbolic. */
5216 if (h)
5217 h->plt.offset = (bfd_vma) -1; /* Cancel PLT trampoline. */
5218 relocation -= elf_gp (output_bfd);
5219 break;
5220 }
5221
5222 relocation = (splt->output_section->vma
5223 + splt->output_offset + h->plt.offset);
5224
5225 relocation -= elf_gp (output_bfd);
5226 break;
5227
5228 case R_NDS32_PLTREL_HI20:
5229 case R_NDS32_PLTREL_LO12:
5230
5231 /* Relocation is to the entry for this symbol in the
5232 procedure linkage table. */
5233
5234 /* The native assembler will generate a 25_PLTREL reloc
5235 for a local symbol if you assemble a call from one
5236 section to another when using -K pic. */
5237 if (h == NULL)
5238 break;
5239
5240 if (h->forced_local)
5241 break;
5242
5243 if (h->plt.offset == (bfd_vma) - 1)
5244 /* We didn't make a PLT entry for this symbol. This
5245 happens when statically linking PIC code, or when
5246 using -Bsymbolic. */
5247 break;
5248
5249 if (splt == NULL)
5250 break;
5251
5252 relocation = (splt->output_section->vma
5253 + splt->output_offset
5254 + h->plt.offset + 4)
5255 - (input_section->output_section->vma
5256 + input_section->output_offset
5257 + rel->r_offset);
5258
5259 break;
5260
5261 case R_NDS32_GOTPC20:
5262 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
5263 ld24 rx,#_GLOBAL_OFFSET_TABLE_ */
5264 relocation = elf_gp (output_bfd);
5265 break;
5266
5267 case R_NDS32_GOTPC_HI20:
5268 case R_NDS32_GOTPC_LO12:
5269 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
5270 bl .+4
5271 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
5272 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
5273 or
5274 bl .+4
5275 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
5276 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) */
5277 relocation = elf_gp (output_bfd);
5278 relocation -= (input_section->output_section->vma
5279 + input_section->output_offset + rel->r_offset);
5280 break;
5281
5282 case R_NDS32_GOT20:
5283 /* Fall through. */
5284 case R_NDS32_GOT_HI20:
5285 case R_NDS32_GOT_LO12:
5286 case R_NDS32_GOT_LO15:
5287 case R_NDS32_GOT_LO19:
5288 /* Relocation is to the entry for this symbol in the global
5289 offset table. */
5290 BFD_ASSERT (sgot != NULL);
5291
5292 if (h != NULL)
5293 {
5294 /* External symbol */
5295 bfd_boolean dyn;
5296
5297 off = h->got.offset;
5298 BFD_ASSERT (off != (bfd_vma) - 1);
5299 dyn = htab->root.dynamic_sections_created;
5300 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
5301 bfd_link_pic (info),
5302 h)
5303 || (bfd_link_pic (info)
5304 && (info->symbolic
5305 || h->dynindx == -1
5306 || h->forced_local) && h->def_regular))
5307 {
5308 /* This is actually a static link, or it is a
5309 -Bsymbolic link and the symbol is defined
5310 locally, or the symbol was forced to be local
5311 because of a version file. We must initialize
5312 this entry in the global offset table. Since the
5313 offset must always be a multiple of 4, we use the
5314 least significant bit to record whether we have
5315 initialized it already.
5316
5317 When doing a dynamic link, we create a .rela.got
5318 relocation entry to initialize the value. This
5319 is done in the finish_dynamic_symbol routine. */
5320 if ((off & 1) != 0) /* clear LSB */
5321 off &= ~1;
5322 else
5323 {
5324 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5325 h->got.offset |= 1;
5326 }
5327 }
5328 relocation = sgot->output_section->vma + sgot->output_offset + off
5329 - elf_gp (output_bfd);
5330 }
5331 else
5332 {
5333 /* Local symbol */
5334 bfd_byte *loc;
5335
5336 BFD_ASSERT (local_got_offsets != NULL
5337 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5338
5339 off = local_got_offsets[r_symndx];
5340
5341 /* The offset must always be a multiple of 4. We use
5342 the least significant bit to record whether we have
5343 already processed this entry. */
5344 if ((off & 1) != 0) /* clear LSB */
5345 off &= ~1;
5346 else
5347 {
5348 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5349
5350 if (bfd_link_pic (info))
5351 {
5352 asection *srelgot;
5353 Elf_Internal_Rela outrel;
5354
5355 /* We need to generate a R_NDS32_RELATIVE reloc
5356 for the dynamic linker. */
5357 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
5358 BFD_ASSERT (srelgot != NULL);
5359
5360 outrel.r_offset = (elf_gp (output_bfd)
5361 + sgot->output_offset + off);
5362 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5363 outrel.r_addend = relocation;
5364 loc = srelgot->contents;
5365 loc +=
5366 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5367 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5368 ++srelgot->reloc_count;
5369 }
5370 local_got_offsets[r_symndx] |= 1;
5371 }
5372 relocation = sgot->output_section->vma + sgot->output_offset + off
5373 - elf_gp (output_bfd);
5374 }
5375
5376 break;
5377
5378 case R_NDS32_16_RELA:
5379 case R_NDS32_20_RELA:
5380 case R_NDS32_5_RELA:
5381 case R_NDS32_32_RELA:
5382 case R_NDS32_9_PCREL_RELA:
5383 case R_NDS32_WORD_9_PCREL_RELA:
5384 case R_NDS32_10_UPCREL_RELA:
5385 case R_NDS32_15_PCREL_RELA:
5386 case R_NDS32_17_PCREL_RELA:
5387 case R_NDS32_25_PCREL_RELA:
5388 case R_NDS32_HI20_RELA:
5389 case R_NDS32_LO12S3_RELA:
5390 case R_NDS32_LO12S2_RELA:
5391 case R_NDS32_LO12S2_DP_RELA:
5392 case R_NDS32_LO12S2_SP_RELA:
5393 case R_NDS32_LO12S1_RELA:
5394 case R_NDS32_LO12S0_RELA:
5395 case R_NDS32_LO12S0_ORI_RELA:
5396 if (bfd_link_pic (info) && r_symndx != 0
5397 && (input_section->flags & SEC_ALLOC) != 0
5398 && (eliminate_gc_relocs == 0
5399 || (sec && (sec->flags & SEC_EXCLUDE) == 0))
5400 && ((r_type != R_NDS32_9_PCREL_RELA
5401 && r_type != R_NDS32_WORD_9_PCREL_RELA
5402 && r_type != R_NDS32_10_UPCREL_RELA
5403 && r_type != R_NDS32_15_PCREL_RELA
5404 && r_type != R_NDS32_17_PCREL_RELA
5405 && r_type != R_NDS32_25_PCREL_RELA
5406 && !(r_type == R_NDS32_32_RELA
5407 && strcmp (input_section->name, ".eh_frame") == 0))
5408 || (h != NULL && h->dynindx != -1
5409 && (!info->symbolic || !h->def_regular))))
5410 {
5411 Elf_Internal_Rela outrel;
5412 bfd_boolean skip, relocate;
5413 bfd_byte *loc;
5414
5415 /* When generating a shared object, these relocations
5416 are copied into the output file to be resolved at run
5417 time. */
5418
5419 if (sreloc == NULL)
5420 {
5421 const char *name;
5422
5423 name = bfd_elf_string_from_elf_section
5424 (input_bfd, elf_elfheader (input_bfd)->e_shstrndx,
5425 elf_section_data (input_section)->rela.hdr->sh_name);
5426 if (name == NULL)
5427 return FALSE;
5428
5429 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5430 && strcmp (bfd_section_name (input_section),
5431 name + 5) == 0);
5432
5433 sreloc = bfd_get_section_by_name (dynobj, name);
5434 BFD_ASSERT (sreloc != NULL);
5435 }
5436
5437 skip = FALSE;
5438 relocate = FALSE;
5439
5440 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5441 info,
5442 input_section,
5443 rel->r_offset);
5444 if (outrel.r_offset == (bfd_vma) - 1)
5445 skip = TRUE;
5446 else if (outrel.r_offset == (bfd_vma) - 2)
5447 skip = TRUE, relocate = TRUE;
5448 outrel.r_offset += (input_section->output_section->vma
5449 + input_section->output_offset);
5450
5451 if (skip)
5452 memset (&outrel, 0, sizeof outrel);
5453 else if (r_type == R_NDS32_17_PCREL_RELA
5454 || r_type == R_NDS32_15_PCREL_RELA
5455 || r_type == R_NDS32_25_PCREL_RELA)
5456 {
5457 BFD_ASSERT (h != NULL && h->dynindx != -1);
5458 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5459 outrel.r_addend = rel->r_addend;
5460 }
5461 else
5462 {
5463 /* h->dynindx may be -1 if this symbol was marked to
5464 become local. */
5465 if (h == NULL
5466 || ((info->symbolic || h->dynindx == -1)
5467 && h->def_regular)
5468 || (bfd_link_pie (info) && h->def_regular))
5469 {
5470 relocate = TRUE;
5471 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5472 outrel.r_addend = relocation + rel->r_addend;
5473
5474 if (h)
5475 {
5476 h->plt.offset = (bfd_vma) -1; /* cancel PLT trampoline. */
5477
5478 BFD_ASSERT (sgot != NULL);
5479 /* If we did not allocate got entry for the symbol,
5480 we can not fill the nonexistent got entry. */
5481 if (h->got.offset != (bfd_vma) -1
5482 && (h->got.offset & 1) == 0)
5483 {
5484 bfd_put_32 (output_bfd, outrel.r_addend,
5485 sgot->contents + h->got.offset);
5486 }
5487 }
5488 }
5489 else
5490 {
5491 if (h->dynindx == -1)
5492 {
5493 _bfd_error_handler
5494 (_("%pB: relocation %s against `%s' can not be used when "
5495 "making a shared object; recompile with -fPIC"),
5496 input_bfd, nds32_elf_howto_table[r_type].name, h->root.root.string);
5497 bfd_set_error (bfd_error_bad_value);
5498 return FALSE;
5499 }
5500
5501 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5502 outrel.r_addend = rel->r_addend;
5503 }
5504 }
5505
5506 loc = sreloc->contents;
5507 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
5508 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5509 ++sreloc->reloc_count;
5510
5511 /* If this reloc is against an external symbol, we do
5512 not want to fiddle with the addend. Otherwise, we
5513 need to include the symbol value so that it becomes
5514 an addend for the dynamic reloc. */
5515 if (!relocate)
5516 continue;
5517 }
5518 break;
5519
5520 case R_NDS32_25_ABS_RELA:
5521 if (bfd_link_pic (info))
5522 {
5523 _bfd_error_handler
5524 (_("%pB: warning: %s unsupported in shared mode"),
5525 input_bfd, "R_NDS32_25_ABS_RELA");
5526 return FALSE;
5527 }
5528 break;
5529
5530 case R_NDS32_9_PCREL:
5531 r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section,
5532 contents, offset,
5533 sec, relocation, addend);
5534 goto check_reloc;
5535
5536 case R_NDS32_HI20:
5537 /* We allow an arbitrary number of HI20 relocs before the
5538 LO12 reloc. This permits gcc to emit the HI and LO relocs
5539 itself. */
5540 for (lorel = rel + 1;
5541 (lorel < relend
5542 && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++)
5543 continue;
5544 if (lorel < relend
5545 && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3
5546 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2
5547 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1
5548 || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0))
5549 {
5550 nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel,
5551 contents, relocation + addend);
5552 r = bfd_reloc_ok;
5553 }
5554 else
5555 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5556 contents, offset, relocation,
5557 addend);
5558 goto check_reloc;
5559
5560 case R_NDS32_GOT17S2_RELA:
5561 case R_NDS32_GOT15S2_RELA:
5562 BFD_ASSERT (sgot != NULL);
5563
5564 if (h != NULL)
5565 {
5566 bfd_boolean dyn;
5567
5568 off = h->got.offset;
5569 BFD_ASSERT (off != (bfd_vma) - 1);
5570
5571 dyn = htab->root.dynamic_sections_created;
5572 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL
5573 (dyn, bfd_link_pic (info), h)
5574 || (bfd_link_pic (info)
5575 && (info->symbolic
5576 || h->dynindx == -1
5577 || h->forced_local)
5578 && h->def_regular))
5579 {
5580 /* This is actually a static link, or it is a
5581 -Bsymbolic link and the symbol is defined
5582 locally, or the symbol was forced to be local
5583 because of a version file. We must initialize
5584 this entry in the global offset table. Since the
5585 offset must always be a multiple of 4, we use the
5586 least significant bit to record whether we have
5587 initialized it already.
5588
5589 When doing a dynamic link, we create a .rela.got
5590 relocation entry to initialize the value. This
5591 is done in the finish_dynamic_symbol routine. */
5592 if ((off & 1) != 0)
5593 off &= ~1;
5594 else
5595 {
5596 bfd_put_32 (output_bfd, relocation,
5597 sgot->contents + off);
5598 h->got.offset |= 1;
5599 }
5600 }
5601 }
5602 else
5603 {
5604 bfd_byte *loc;
5605
5606 BFD_ASSERT (local_got_offsets != NULL
5607 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5608
5609 off = local_got_offsets[r_symndx];
5610
5611 /* The offset must always be a multiple of 4. We use
5612 the least significant bit to record whether we have
5613 already processed this entry. */
5614 if ((off & 1) != 0)
5615 off &= ~1;
5616 else
5617 {
5618 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
5619
5620 if (bfd_link_pic (info))
5621 {
5622 asection *srelgot;
5623 Elf_Internal_Rela outrel;
5624
5625 /* We need to generate a R_NDS32_RELATIVE reloc
5626 for the dynamic linker. */
5627 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
5628 BFD_ASSERT (srelgot != NULL);
5629
5630 outrel.r_offset = (elf_gp (output_bfd)
5631 + sgot->output_offset + off);
5632 outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
5633 outrel.r_addend = relocation;
5634 loc = srelgot->contents;
5635 loc +=
5636 srelgot->reloc_count * sizeof (Elf32_External_Rela);
5637 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5638 ++srelgot->reloc_count;
5639 }
5640 local_got_offsets[r_symndx] |= 1;
5641 }
5642 }
5643 relocation = sgot->output_section->vma + sgot->output_offset + off
5644 - elf_gp (output_bfd);
5645
5646 if (relocation & align)
5647 {
5648 /* Incorrect alignment. */
5649 _bfd_error_handler
5650 (_("%pB: warning: unaligned access to GOT entry"), input_bfd);
5651 ret = FALSE;
5652 r = bfd_reloc_dangerous;
5653 goto check_reloc;
5654 }
5655 break;
5656
5657 case R_NDS32_SDA16S3_RELA:
5658 case R_NDS32_SDA15S3_RELA:
5659 case R_NDS32_SDA15S3:
5660 align = 0x7;
5661 goto handle_sda;
5662
5663 case R_NDS32_SDA17S2_RELA:
5664 case R_NDS32_SDA15S2_RELA:
5665 case R_NDS32_SDA12S2_SP_RELA:
5666 case R_NDS32_SDA12S2_DP_RELA:
5667 case R_NDS32_SDA15S2:
5668 case R_NDS32_SDA_FP7U2_RELA:
5669 align = 0x3;
5670 goto handle_sda;
5671
5672 case R_NDS32_SDA18S1_RELA:
5673 case R_NDS32_SDA15S1_RELA:
5674 case R_NDS32_SDA15S1:
5675 align = 0x1;
5676 goto handle_sda;
5677
5678 case R_NDS32_SDA19S0_RELA:
5679 case R_NDS32_SDA15S0_RELA:
5680 case R_NDS32_SDA15S0:
5681 align = 0x0;
5682 handle_sda:
5683 BFD_ASSERT (sec != NULL);
5684
5685 /* If the symbol is in the abs section, the out_bfd will be null.
5686 This happens when the relocation has a symbol@GOTOFF. */
5687 r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE);
5688 if (r != bfd_reloc_ok)
5689 {
5690 _bfd_error_handler
5691 (_("%pB: warning: relocate SDA_BASE failed"), input_bfd);
5692 ret = FALSE;
5693 goto check_reloc;
5694 }
5695
5696 /* At this point `relocation' contains the object's
5697 address. */
5698 if (r_type == R_NDS32_SDA_FP7U2_RELA)
5699 {
5700 relocation -= fpbase_addr;
5701 }
5702 else
5703 relocation -= gp;
5704 /* Now it contains the offset from _SDA_BASE_. */
5705
5706 /* Make sure alignment is correct. */
5707
5708 if (relocation & align)
5709 {
5710 /* Incorrect alignment. */
5711 _bfd_error_handler
5712 /* xgettext:c-format */
5713 (_("%pB(%pA): warning: unaligned small data access"
5714 " of type %d"),
5715 input_bfd, input_section, r_type);
5716 ret = FALSE;
5717 goto check_reloc;
5718 }
5719 break;
5720
5721 case R_NDS32_17IFC_PCREL_RELA:
5722 case R_NDS32_10IFCU_PCREL_RELA:
5723 /* Do nothing. */
5724 break;
5725
5726 case R_NDS32_TLS_LE_HI20:
5727 case R_NDS32_TLS_LE_LO12:
5728 case R_NDS32_TLS_LE_20:
5729 case R_NDS32_TLS_LE_15S0:
5730 case R_NDS32_TLS_LE_15S1:
5731 case R_NDS32_TLS_LE_15S2:
5732 /* We do not have garbage collection for got entries.
5733 Therefore, IE to LE may have one empty entry, and DESC to
5734 LE may have two. */
5735 if (elf_hash_table (info)->tls_sec != NULL)
5736 relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET);
5737 break;
5738
5739 case R_NDS32_TLS_IE_HI20:
5740 case R_NDS32_TLS_IE_LO12S2:
5741 case R_NDS32_TLS_DESC_HI20:
5742 case R_NDS32_TLS_DESC_LO12:
5743 case R_NDS32_TLS_IE_LO12:
5744 case R_NDS32_TLS_IEGP_HI20:
5745 case R_NDS32_TLS_IEGP_LO12:
5746 case R_NDS32_TLS_IEGP_LO12S2:
5747 {
5748 /* Relocation is to the entry for this symbol in the global
5749 offset table. */
5750 enum elf_nds32_tls_type tls_type, org_tls_type, eff_tls_type;
5751 asection *srelgot;
5752 Elf_Internal_Rela outrel;
5753 bfd_byte *loc;
5754 int indx = 0;
5755
5756 eff_tls_type = org_tls_type = get_tls_type (r_type, h);
5757
5758 BFD_ASSERT (sgot != NULL);
5759 if (h != NULL)
5760 {
5761 bfd_boolean dyn;
5762
5763 off = h->got.offset;
5764 BFD_ASSERT (off != (bfd_vma) -1);
5765 dyn = htab->root.dynamic_sections_created;
5766 tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type;
5767 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
5768 && (!bfd_link_pic (info)
5769 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5770 indx = h->dynindx;
5771 }
5772 else
5773 {
5774 BFD_ASSERT (local_got_offsets != NULL
5775 && local_got_offsets[r_symndx] != (bfd_vma) - 1);
5776 off = local_got_offsets[r_symndx];
5777 tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx];
5778 }
5779
5780 relocation = sgot->output_section->vma + sgot->output_offset + off;
5781
5782 if (1 < ones32 (tls_type))
5783 {
5784 eff_tls_type = 1 << (fls (tls_type) - 1);
5785 /* TLS model shall be handled in nds32_elf_unify_tls_model (). */
5786
5787 /* TLS model X -> LE is not implement yet!
5788 workaround here! */
5789 if (eff_tls_type == GOT_TLS_LE)
5790 {
5791 eff_tls_type = 1 << (fls (tls_type ^ eff_tls_type) - 1);
5792 }
5793 }
5794
5795 /* The offset must always be a multiple of 4. We use
5796 the least significant bit to record whether we have
5797 already processed this entry. */
5798 bfd_boolean need_relocs = FALSE;
5799 srelgot = ehtab->srelgot;
5800 if ((bfd_link_pic (info) || indx != 0)
5801 && (h == NULL || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5802 || h->root.type != bfd_link_hash_undefweak))
5803 {
5804 need_relocs = TRUE;
5805 BFD_ASSERT (srelgot != NULL);
5806 }
5807
5808 if (off & 1)
5809 {
5810 off &= ~1;
5811 relocation &= ~1;
5812
5813 if (eff_tls_type & GOT_TLS_DESC)
5814 {
5815 relocation -= elf_gp (output_bfd);
5816 if ((R_NDS32_TLS_DESC_HI20 == r_type) && (!need_relocs))
5817 {
5818 /* TLS model shall be converted. */
5819 BFD_ASSERT(0);
5820 }
5821 }
5822 else if (eff_tls_type & GOT_TLS_IEGP)
5823 {
5824 relocation -= elf_gp (output_bfd);
5825 }
5826 }
5827 else
5828 {
5829 if ((eff_tls_type & GOT_TLS_LE) && (tls_type ^ eff_tls_type))
5830 {
5831 /* TLS model workaround shall be applied. */
5832 BFD_ASSERT(0);
5833 }
5834 else if (eff_tls_type & (GOT_TLS_IE | GOT_TLS_IEGP))
5835 {
5836 if (eff_tls_type & GOT_TLS_IEGP)
5837 relocation -= elf_gp(output_bfd);
5838
5839 if (need_relocs)
5840 {
5841 if (indx == 0)
5842 outrel.r_addend = gottpoff (info, relocation_sym);
5843 else
5844 outrel.r_addend = 0;
5845 outrel.r_offset = (sgot->output_section->vma
5846 + sgot->output_offset + off);
5847 outrel.r_info = ELF32_R_INFO (indx, R_NDS32_TLS_TPOFF);
5848
5849 elf32_nds32_add_dynreloc (output_bfd, info, srelgot,
5850 &outrel);
5851 }
5852 else
5853 {
5854 bfd_put_32 (output_bfd, gottpoff (info, relocation_sym),
5855 sgot->contents + off);
5856 }
5857 }
5858 else if (eff_tls_type & GOT_TLS_DESC)
5859 {
5860 relocation -= elf_gp (output_bfd);
5861 if (need_relocs)
5862 {
5863 if (indx == 0)
5864 outrel.r_addend = gottpoff (info, relocation_sym);
5865 else
5866 outrel.r_addend = 0;
5867 outrel.r_offset = (sgot->output_section->vma
5868 + sgot->output_offset + off);
5869 outrel.r_info = ELF32_R_INFO (indx, R_NDS32_TLS_DESC);
5870
5871 if (htab->tls_desc_trampoline)
5872 {
5873 asection *srelplt;
5874 srelplt = ehtab->srelplt;
5875 loc = srelplt->contents;
5876 loc += htab->next_tls_desc_index++ * sizeof (Elf32_External_Rela);
5877 BFD_ASSERT (loc + sizeof (Elf32_External_Rela)
5878 <= srelplt->contents + srelplt->size);
5879
5880 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5881 }
5882 else
5883 {
5884 loc = srelgot->contents;
5885 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
5886 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5887 ++srelgot->reloc_count;
5888 }
5889 }
5890 else
5891 {
5892 /* feed me! */
5893 bfd_put_32 (output_bfd, 0xdeadbeef,
5894 sgot->contents + off);
5895 bfd_put_32 (output_bfd, gottpoff (info, relocation_sym),
5896 sgot->contents + off + 4);
5897 patch_tls_desc_to_ie (contents, rel, input_bfd);
5898 BFD_ASSERT(0);
5899 }
5900 }
5901 else
5902 {
5903 /* TLS model workaround shall be applied. */
5904 BFD_ASSERT(0);
5905 }
5906
5907 if (h != NULL)
5908 h->got.offset |= 1;
5909 else
5910 local_got_offsets[r_symndx] |= 1;
5911 }
5912 }
5913 break;
5914 /* DON'T fall through. */
5915
5916 default:
5917 /* OLD_NDS32_RELOC. */
5918
5919 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5920 contents, offset, relocation, addend);
5921 goto check_reloc;
5922 }
5923
5924 switch ((int) r_type)
5925 {
5926 case R_NDS32_20_RELA:
5927 case R_NDS32_5_RELA:
5928 case R_NDS32_9_PCREL_RELA:
5929 case R_NDS32_WORD_9_PCREL_RELA:
5930 case R_NDS32_10_UPCREL_RELA:
5931 case R_NDS32_15_PCREL_RELA:
5932 case R_NDS32_17_PCREL_RELA:
5933 case R_NDS32_25_PCREL_RELA:
5934 case R_NDS32_25_ABS_RELA:
5935 case R_NDS32_HI20_RELA:
5936 case R_NDS32_LO12S3_RELA:
5937 case R_NDS32_LO12S2_RELA:
5938 case R_NDS32_LO12S2_DP_RELA:
5939 case R_NDS32_LO12S2_SP_RELA:
5940 case R_NDS32_LO12S1_RELA:
5941 case R_NDS32_LO12S0_RELA:
5942 case R_NDS32_LO12S0_ORI_RELA:
5943 case R_NDS32_SDA16S3_RELA:
5944 case R_NDS32_SDA17S2_RELA:
5945 case R_NDS32_SDA18S1_RELA:
5946 case R_NDS32_SDA19S0_RELA:
5947 case R_NDS32_SDA15S3_RELA:
5948 case R_NDS32_SDA15S2_RELA:
5949 case R_NDS32_SDA12S2_DP_RELA:
5950 case R_NDS32_SDA12S2_SP_RELA:
5951 case R_NDS32_SDA15S1_RELA:
5952 case R_NDS32_SDA15S0_RELA:
5953 case R_NDS32_SDA_FP7U2_RELA:
5954 case R_NDS32_9_PLTREL:
5955 case R_NDS32_25_PLTREL:
5956 case R_NDS32_GOT20:
5957 case R_NDS32_GOT_HI20:
5958 case R_NDS32_GOT_LO12:
5959 case R_NDS32_GOT_LO15:
5960 case R_NDS32_GOT_LO19:
5961 case R_NDS32_GOT15S2_RELA:
5962 case R_NDS32_GOT17S2_RELA:
5963 case R_NDS32_GOTPC20:
5964 case R_NDS32_GOTPC_HI20:
5965 case R_NDS32_GOTPC_LO12:
5966 case R_NDS32_GOTOFF:
5967 case R_NDS32_GOTOFF_HI20:
5968 case R_NDS32_GOTOFF_LO12:
5969 case R_NDS32_GOTOFF_LO15:
5970 case R_NDS32_GOTOFF_LO19:
5971 case R_NDS32_PLTREL_HI20:
5972 case R_NDS32_PLTREL_LO12:
5973 case R_NDS32_PLT_GOTREL_HI20:
5974 case R_NDS32_PLT_GOTREL_LO12:
5975 case R_NDS32_PLT_GOTREL_LO15:
5976 case R_NDS32_PLT_GOTREL_LO19:
5977 case R_NDS32_PLT_GOTREL_LO20:
5978 case R_NDS32_17IFC_PCREL_RELA:
5979 case R_NDS32_10IFCU_PCREL_RELA:
5980 case R_NDS32_TLS_LE_HI20:
5981 case R_NDS32_TLS_LE_LO12:
5982 case R_NDS32_TLS_IE_HI20:
5983 case R_NDS32_TLS_IE_LO12S2:
5984 case R_NDS32_TLS_LE_20:
5985 case R_NDS32_TLS_LE_15S0:
5986 case R_NDS32_TLS_LE_15S1:
5987 case R_NDS32_TLS_LE_15S2:
5988 case R_NDS32_TLS_DESC_HI20:
5989 case R_NDS32_TLS_DESC_LO12:
5990 case R_NDS32_TLS_IE_LO12:
5991 case R_NDS32_TLS_IEGP_HI20:
5992 case R_NDS32_TLS_IEGP_LO12:
5993 case R_NDS32_TLS_IEGP_LO12S2:
5994 /* Instruction related relocs must handle endian properly. */
5995 /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */
5996 r = nds32_elf_final_link_relocate (howto, input_bfd,
5997 input_section, contents,
5998 rel->r_offset, relocation,
5999 rel->r_addend);
6000 break;
6001
6002 default:
6003 /* All other relocs can use default handler. */
6004 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
6005 contents, rel->r_offset,
6006 relocation, rel->r_addend);
6007 break;
6008 }
6009
6010 check_reloc:
6011
6012 if (r != bfd_reloc_ok)
6013 {
6014 /* FIXME: This should be generic enough to go in a utility. */
6015 const char *name;
6016
6017 if (h != NULL)
6018 name = h->root.root.string;
6019 else
6020 {
6021 name = bfd_elf_string_from_elf_section
6022 (input_bfd, symtab_hdr->sh_link, sym->st_name);
6023 if (name == NULL || *name == '\0')
6024 name = bfd_section_name (sec);
6025 }
6026
6027 if (errmsg != NULL)
6028 goto common_error;
6029
6030 switch (r)
6031 {
6032 case bfd_reloc_overflow:
6033 (*info->callbacks->reloc_overflow)
6034 (info, (h ? &h->root : NULL), name, howto->name,
6035 (bfd_vma) 0, input_bfd, input_section, offset);
6036 break;
6037
6038 case bfd_reloc_undefined:
6039 (*info->callbacks->undefined_symbol)
6040 (info, name, input_bfd, input_section, offset, TRUE);
6041 break;
6042
6043 case bfd_reloc_outofrange:
6044 errmsg = _("internal error: out of range error");
6045 goto common_error;
6046
6047 case bfd_reloc_notsupported:
6048 errmsg = _("internal error: unsupported relocation error");
6049 goto common_error;
6050
6051 case bfd_reloc_dangerous:
6052 errmsg = _("internal error: dangerous error");
6053 goto common_error;
6054
6055 default:
6056 errmsg = _("internal error: unknown error");
6057 /* Fall through. */
6058
6059 common_error:
6060 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
6061 input_section, offset);
6062 break;
6063 }
6064 }
6065 }
6066
6067 /* Resotre header size to avoid overflow load. */
6068 if (elf_nds32_tdata (input_bfd)->hdr_size != 0)
6069 symtab_hdr->sh_size = elf_nds32_tdata (input_bfd)->hdr_size;
6070
6071 return ret;
6072 }
6073
6074 /* Finish up dynamic symbol handling. We set the contents of various
6075 dynamic sections here. */
6076
6077 static bfd_boolean
6078 nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
6079 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
6080 {
6081 struct elf_link_hash_table *ehtab;
6082 struct elf_nds32_link_hash_entry *hent;
6083 bfd_byte *loc;
6084
6085 ehtab = elf_hash_table (info);
6086 hent = (struct elf_nds32_link_hash_entry *) h;
6087
6088 if (h->plt.offset != (bfd_vma) - 1)
6089 {
6090 asection *splt;
6091 asection *sgot;
6092 asection *srela;
6093
6094 bfd_vma plt_index;
6095 bfd_vma got_offset;
6096 bfd_vma local_plt_offset;
6097 Elf_Internal_Rela rela;
6098
6099 /* This symbol has an entry in the procedure linkage table. Set
6100 it up. */
6101
6102 BFD_ASSERT (h->dynindx != -1);
6103
6104 splt = ehtab->splt;
6105 sgot = ehtab->sgotplt;
6106 srela = ehtab->srelplt;
6107 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
6108
6109 /* Get the index in the procedure linkage table which
6110 corresponds to this symbol. This is the index of this symbol
6111 in all the symbols for which we are making plt entries. The
6112 first entry in the procedure linkage table is reserved. */
6113 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
6114
6115 /* Get the offset into the .got table of the entry that
6116 corresponds to this function. Each .got entry is 4 bytes.
6117 The first three are reserved. */
6118 got_offset = (plt_index + 3) * 4;
6119
6120 /* Fill in the entry in the procedure linkage table. */
6121 if (!bfd_link_pic (info))
6122 {
6123 unsigned long insn;
6124
6125 insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma
6126 + sgot->output_offset + got_offset) >> 12)
6127 & 0xfffff);
6128 bfd_putb32 (insn, splt->contents + h->plt.offset);
6129
6130 insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma
6131 + sgot->output_offset + got_offset) & 0x0fff)
6132 >> 2);
6133 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
6134
6135 insn = PLT_ENTRY_WORD2;
6136 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
6137
6138 insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff);
6139 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
6140
6141 insn = PLT_ENTRY_WORD4
6142 + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff);
6143 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
6144 local_plt_offset = 12;
6145 }
6146 else
6147 {
6148 /* sda_base must be set at this time. */
6149 unsigned long insn;
6150 long offset;
6151
6152 offset = sgot->output_section->vma + sgot->output_offset + got_offset
6153 - elf_gp (output_bfd);
6154 insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff);
6155 bfd_putb32 (insn, splt->contents + h->plt.offset);
6156
6157 insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff);
6158 bfd_putb32 (insn, splt->contents + h->plt.offset + 4);
6159
6160 insn = PLT_PIC_ENTRY_WORD2;
6161 bfd_putb32 (insn, splt->contents + h->plt.offset + 8);
6162
6163 insn = PLT_PIC_ENTRY_WORD3;
6164 bfd_putb32 (insn, splt->contents + h->plt.offset + 12);
6165
6166 insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff);
6167 bfd_putb32 (insn, splt->contents + h->plt.offset + 16);
6168
6169 insn = PLT_PIC_ENTRY_WORD5
6170 + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff);
6171 bfd_putb32 (insn, splt->contents + h->plt.offset + 20);
6172
6173 local_plt_offset = 16;
6174 }
6175
6176 /* Fill in the entry in the global offset table,
6177 so it will fall through to the next instruction for the first time. */
6178 bfd_put_32 (output_bfd,
6179 (splt->output_section->vma + splt->output_offset
6180 + h->plt.offset + local_plt_offset),
6181 sgot->contents + got_offset);
6182
6183 /* Fill in the entry in the .rela.plt section. */
6184 rela.r_offset = (sgot->output_section->vma
6185 + sgot->output_offset + got_offset);
6186 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT);
6187 rela.r_addend = 0;
6188 loc = srela->contents;
6189 loc += plt_index * sizeof (Elf32_External_Rela);
6190 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6191
6192 if (!h->def_regular)
6193 {
6194 /* Mark the symbol as undefined, rather than as defined in
6195 the .plt section. Leave the value alone. */
6196 sym->st_shndx = SHN_UNDEF;
6197 if (!h->ref_regular_nonweak)
6198 sym->st_value = 0;
6199 }
6200 }
6201
6202 if (h->got.offset != (bfd_vma) - 1
6203 && hent->tls_type == GOT_NORMAL)
6204 {
6205 asection *sgot;
6206 asection *srelagot;
6207 Elf_Internal_Rela rela;
6208
6209 /* This symbol has an entry in the global offset table.
6210 Set it up. */
6211
6212 sgot = ehtab->sgot;
6213 srelagot = ehtab->srelgot;
6214 BFD_ASSERT (sgot != NULL && srelagot != NULL);
6215
6216 rela.r_offset = (sgot->output_section->vma
6217 + sgot->output_offset + (h->got.offset & ~1));
6218
6219 /* If this is a -Bsymbolic link, and the symbol is defined
6220 locally, we just want to emit a RELATIVE reloc. Likewise if
6221 the symbol was forced to be local because of a version file.
6222 The entry in the global offset table will already have been
6223 initialized in the relocate_section function. */
6224 if ((bfd_link_pic (info)
6225 && (info->symbolic || h->dynindx == -1 || h->forced_local)
6226 && h->def_regular)
6227 || (bfd_link_pie (info) && h->def_regular))
6228 {
6229 rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE);
6230 rela.r_addend = (h->root.u.def.value
6231 + h->root.u.def.section->output_section->vma
6232 + h->root.u.def.section->output_offset);
6233
6234 if ((h->got.offset & 1) == 0)
6235 {
6236 bfd_put_32 (output_bfd, rela.r_addend,
6237 sgot->contents + h->got.offset);
6238 }
6239 }
6240 else
6241 {
6242 BFD_ASSERT ((h->got.offset & 1) == 0);
6243 bfd_put_32 (output_bfd, (bfd_vma) 0,
6244 sgot->contents + h->got.offset);
6245 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT);
6246 rela.r_addend = 0;
6247 }
6248
6249 loc = srelagot->contents;
6250 loc += srelagot->reloc_count * sizeof (Elf32_External_Rela);
6251 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6252 ++srelagot->reloc_count;
6253 BFD_ASSERT (loc < (srelagot->contents + srelagot->size));
6254 }
6255
6256 if (h->needs_copy)
6257 {
6258 asection *s;
6259 Elf_Internal_Rela rela;
6260
6261 /* This symbols needs a copy reloc. Set it up. */
6262
6263 BFD_ASSERT (h->dynindx != -1
6264 && (h->root.type == bfd_link_hash_defined
6265 || h->root.type == bfd_link_hash_defweak));
6266
6267 s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss");
6268 BFD_ASSERT (s != NULL);
6269
6270 rela.r_offset = (h->root.u.def.value
6271 + h->root.u.def.section->output_section->vma
6272 + h->root.u.def.section->output_offset);
6273 rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY);
6274 rela.r_addend = 0;
6275 loc = s->contents;
6276 loc += s->reloc_count * sizeof (Elf32_External_Rela);
6277 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6278 ++s->reloc_count;
6279 }
6280
6281 /* Mark some specially defined symbols as absolute. */
6282 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6283 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
6284 sym->st_shndx = SHN_ABS;
6285
6286 return TRUE;
6287 }
6288
6289
6290 /* Finish up the dynamic sections. */
6291
6292 static bfd_boolean
6293 nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6294 {
6295 bfd *dynobj;
6296 asection *sdyn;
6297 asection *sgotplt;
6298 struct elf_link_hash_table *ehtab;
6299 struct elf_nds32_link_hash_table *htab;
6300
6301 ehtab = elf_hash_table (info);
6302 htab = nds32_elf_hash_table (info);
6303 if (htab == NULL)
6304 return FALSE;
6305
6306 dynobj = elf_hash_table (info)->dynobj;
6307
6308 sgotplt = ehtab->sgotplt;
6309 /* A broken linker script might have discarded the dynamic sections.
6310 Catch this here so that we do not seg-fault later on. */
6311 if (sgotplt != NULL && bfd_is_abs_section (sgotplt->output_section))
6312 return FALSE;
6313 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6314
6315 if (elf_hash_table (info)->dynamic_sections_created)
6316 {
6317 asection *splt;
6318 Elf32_External_Dyn *dyncon, *dynconend;
6319
6320 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6321
6322 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6323 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6324
6325 for (; dyncon < dynconend; dyncon++)
6326 {
6327 Elf_Internal_Dyn dyn;
6328 asection *s;
6329
6330 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
6331
6332 switch (dyn.d_tag)
6333 {
6334 default:
6335 break;
6336
6337 case DT_PLTGOT:
6338 /* name = ".got"; */
6339 s = ehtab->sgot->output_section;
6340 goto get_vma;
6341 case DT_JMPREL:
6342 s = ehtab->srelplt->output_section;
6343 get_vma:
6344 BFD_ASSERT (s != NULL);
6345 dyn.d_un.d_ptr = s->vma;
6346 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6347 break;
6348
6349 case DT_PLTRELSZ:
6350 s = ehtab->srelplt->output_section;
6351 BFD_ASSERT (s != NULL);
6352 dyn.d_un.d_val = s->size;
6353 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6354 break;
6355
6356 case DT_RELASZ:
6357 /* My reading of the SVR4 ABI indicates that the
6358 procedure linkage table relocs (DT_JMPREL) should be
6359 included in the overall relocs (DT_RELA). This is
6360 what Solaris does. However, UnixWare can not handle
6361 that case. Therefore, we override the DT_RELASZ entry
6362 here to make it not include the JMPREL relocs. Since
6363 the linker script arranges for .rela.plt to follow all
6364 other relocation sections, we don't have to worry
6365 about changing the DT_RELA entry. */
6366 if (ehtab->srelplt != NULL)
6367 {
6368 s = ehtab->srelplt->output_section;
6369 dyn.d_un.d_val -= s->size;
6370 }
6371 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6372 break;
6373
6374 case DT_TLSDESC_PLT:
6375 s = htab->root.splt;
6376 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
6377 + htab->root.tlsdesc_plt);
6378 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6379 break;
6380
6381 case DT_TLSDESC_GOT:
6382 s = htab->root.sgot;
6383 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
6384 + htab->root.tlsdesc_got);
6385 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6386 break;
6387 }
6388 }
6389
6390 /* Fill in the first entry in the procedure linkage table. */
6391 splt = ehtab->splt;
6392 if (splt && splt->size > 0)
6393 {
6394 if (bfd_link_pic (info))
6395 {
6396 unsigned long insn;
6397 long offset;
6398
6399 offset = sgotplt->output_section->vma + sgotplt->output_offset + 4
6400 - elf_gp (output_bfd);
6401 insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff);
6402 bfd_putb32 (insn, splt->contents);
6403
6404 /* here has a typo? */
6405 insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff);
6406 bfd_putb32 (insn, splt->contents + 4);
6407
6408 insn = PLT0_PIC_ENTRY_WORD2;
6409 bfd_putb32 (insn, splt->contents + 8);
6410
6411 insn = PLT0_PIC_ENTRY_WORD3;
6412 bfd_putb32 (insn, splt->contents + 12);
6413
6414 insn = PLT0_PIC_ENTRY_WORD4;
6415 bfd_putb32 (insn, splt->contents + 16);
6416
6417 insn = PLT0_PIC_ENTRY_WORD5;
6418 bfd_putb32 (insn, splt->contents + 20);
6419 }
6420 else
6421 {
6422 unsigned long insn;
6423 unsigned long addr;
6424
6425 /* addr = .got + 4 */
6426 addr = sgotplt->output_section->vma + sgotplt->output_offset + 4;
6427 insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff);
6428 bfd_putb32 (insn, splt->contents);
6429
6430 insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff);
6431 bfd_putb32 (insn, splt->contents + 4);
6432
6433 insn = PLT0_ENTRY_WORD2;
6434 bfd_putb32 (insn, splt->contents + 8);
6435
6436 insn = PLT0_ENTRY_WORD3;
6437 bfd_putb32 (insn, splt->contents + 12);
6438
6439 insn = PLT0_ENTRY_WORD4;
6440 bfd_putb32 (insn, splt->contents + 16);
6441 }
6442
6443 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
6444 PLT_ENTRY_SIZE;
6445 }
6446
6447 if (htab->root.tlsdesc_plt)
6448 {
6449 /* Calculate addresses. */
6450 asection *sgot = sgot = ehtab->sgot;
6451 bfd_vma pltgot = sgotplt->output_section->vma
6452 + sgotplt->output_offset;
6453 bfd_vma tlsdesc_got = sgot->output_section->vma + sgot->output_offset
6454 + htab->root.tlsdesc_got;
6455
6456 /* Get GP offset. */
6457 pltgot -= elf_gp (output_bfd) - 4; /* PLTGOT[1] */
6458 tlsdesc_got -= elf_gp (output_bfd);
6459
6460 /* Do relocation. */
6461 dl_tlsdesc_lazy_trampoline[0] += ((1 << 20) - 1) & (tlsdesc_got >> 12);
6462 dl_tlsdesc_lazy_trampoline[1] += 0xfff & tlsdesc_got;
6463 dl_tlsdesc_lazy_trampoline[4] += ((1 << 20) - 1) & (pltgot >> 12);
6464 dl_tlsdesc_lazy_trampoline[5] += 0xfff & pltgot;
6465
6466 /* Insert .plt. */
6467 nds32_put_trampoline (splt->contents + htab->root.tlsdesc_plt,
6468 dl_tlsdesc_lazy_trampoline,
6469 ARRAY_SIZE (dl_tlsdesc_lazy_trampoline));
6470 }
6471 }
6472
6473 /* Fill in the first three entries in the global offset table. */
6474 if (sgotplt && sgotplt->size > 0)
6475 {
6476 if (sdyn == NULL)
6477 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6478 else
6479 bfd_put_32 (output_bfd,
6480 sdyn->output_section->vma + sdyn->output_offset,
6481 sgotplt->contents);
6482 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6483 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6484
6485 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6486 }
6487
6488 return TRUE;
6489 }
6490 \f
6491
6492 /* Set the right machine number. */
6493
6494 static bfd_boolean
6495 nds32_elf_object_p (bfd *abfd)
6496 {
6497 static unsigned int cur_arch = 0;
6498
6499 if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH))
6500 {
6501 /* E_N1_ARCH is a wild card, so it is set only when no others exist. */
6502 cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH);
6503 }
6504
6505 switch (cur_arch)
6506 {
6507 default:
6508 case E_N1_ARCH:
6509 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1);
6510 break;
6511 case E_N1H_ARCH:
6512 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h);
6513 break;
6514 case E_NDS_ARCH_STAR_V2_0:
6515 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2);
6516 break;
6517 case E_NDS_ARCH_STAR_V3_0:
6518 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3);
6519 break;
6520 case E_NDS_ARCH_STAR_V3_M:
6521 bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m);
6522 break;
6523 }
6524
6525 return TRUE;
6526 }
6527
6528 /* Store the machine number in the flags field. */
6529
6530 static bfd_boolean
6531 nds32_elf_final_write_processing (bfd *abfd)
6532 {
6533 unsigned long val;
6534 static unsigned int cur_mach = 0;
6535
6536 if (bfd_mach_n1 != bfd_get_mach (abfd))
6537 {
6538 cur_mach = bfd_get_mach (abfd);
6539 }
6540
6541 switch (cur_mach)
6542 {
6543 case bfd_mach_n1:
6544 /* Only happen when object is empty, since the case is abandon. */
6545 val = E_N1_ARCH;
6546 val |= E_NDS_ABI_AABI;
6547 val |= E_NDS32_ELF_VER_1_4;
6548 break;
6549 case bfd_mach_n1h:
6550 val = E_N1H_ARCH;
6551 break;
6552 case bfd_mach_n1h_v2:
6553 val = E_NDS_ARCH_STAR_V2_0;
6554 break;
6555 case bfd_mach_n1h_v3:
6556 val = E_NDS_ARCH_STAR_V3_0;
6557 break;
6558 case bfd_mach_n1h_v3m:
6559 val = E_NDS_ARCH_STAR_V3_M;
6560 break;
6561 default:
6562 val = 0;
6563 break;
6564 }
6565
6566 elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH;
6567 elf_elfheader (abfd)->e_flags |= val;
6568 return _bfd_elf_final_write_processing (abfd);
6569 }
6570
6571 /* Function to keep NDS32 specific file flags. */
6572
6573 static bfd_boolean
6574 nds32_elf_set_private_flags (bfd *abfd, flagword flags)
6575 {
6576 BFD_ASSERT (!elf_flags_init (abfd)
6577 || elf_elfheader (abfd)->e_flags == flags);
6578
6579 elf_elfheader (abfd)->e_flags = flags;
6580 elf_flags_init (abfd) = TRUE;
6581 return TRUE;
6582 }
6583
6584 static unsigned int
6585 convert_e_flags (unsigned int e_flags, unsigned int arch)
6586 {
6587 if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9)
6588 {
6589 /* From 0.9 to 1.0. */
6590 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0;
6591
6592 /* Invert E_NDS32_HAS_NO_MAC_INST. */
6593 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
6594 if (arch == E_NDS_ARCH_STAR_V1_0)
6595 {
6596 /* Done. */
6597 return e_flags;
6598 }
6599 }
6600
6601 /* From 1.0 to 2.0. */
6602 e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0;
6603
6604 /* Clear E_NDS32_HAS_MFUSR_PC_INST. */
6605 e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST;
6606
6607 /* Invert E_NDS32_HAS_NO_MAC_INST. */
6608 e_flags ^= E_NDS32_HAS_NO_MAC_INST;
6609 return e_flags;
6610 }
6611
6612 static bfd_boolean
6613 nds32_check_vec_size (bfd *ibfd)
6614 {
6615 static unsigned int nds32_vec_size = 0;
6616
6617 asection *sec_t = NULL;
6618 bfd_byte *contents = NULL;
6619
6620 sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags");
6621
6622 if (sec_t && sec_t->size >= 4)
6623 {
6624 /* Get vec_size in file. */
6625 unsigned int flag_t;
6626
6627 nds32_get_section_contents (ibfd, sec_t, &contents, TRUE);
6628 flag_t = bfd_get_32 (ibfd, contents);
6629
6630 /* The value could only be 4 or 16. */
6631
6632 if (!nds32_vec_size)
6633 /* Set if not set yet. */
6634 nds32_vec_size = (flag_t & 0x3);
6635 else if (nds32_vec_size != (flag_t & 0x3))
6636 {
6637 _bfd_error_handler
6638 /* xgettext:c-format */
6639 (_("%pB: ISR vector size mismatch"
6640 " with previous modules, previous %u-byte, current %u-byte"),
6641 ibfd,
6642 nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff,
6643 (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff);
6644 return FALSE;
6645 }
6646 else
6647 /* Only keep the first vec_size section. */
6648 sec_t->flags |= SEC_EXCLUDE;
6649 }
6650
6651 return TRUE;
6652 }
6653
6654 /* Merge backend specific data from an object file to the output
6655 object file when linking. */
6656
6657 static bfd_boolean
6658 nds32_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6659 {
6660 bfd *obfd = info->output_bfd;
6661 flagword out_flags;
6662 flagword in_flags;
6663 flagword out_16regs;
6664 flagword in_no_mac;
6665 flagword out_no_mac;
6666 flagword in_16regs;
6667 flagword out_version;
6668 flagword in_version;
6669 flagword out_fpu_config;
6670 flagword in_fpu_config;
6671
6672 /* FIXME: What should be checked when linking shared libraries? */
6673 if ((ibfd->flags & DYNAMIC) != 0)
6674 return TRUE;
6675
6676 /* TODO: Revise to use object-attributes instead. */
6677 if (!nds32_check_vec_size (ibfd))
6678 return FALSE;
6679
6680 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6681 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6682 return TRUE;
6683
6684 if (bfd_little_endian (ibfd) != bfd_little_endian (obfd))
6685 {
6686 _bfd_error_handler
6687 (_("%pB: warning: endian mismatch with previous modules"), ibfd);
6688
6689 bfd_set_error (bfd_error_bad_value);
6690 return FALSE;
6691 }
6692
6693 /* -B option in objcopy cannot work as expected. e_flags = 0 shall be
6694 treat as generic one without checking and merging. */
6695 if (elf_elfheader (ibfd)->e_flags)
6696 {
6697 in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION;
6698 if (in_version == E_NDS32_ELF_VER_1_2)
6699 {
6700 _bfd_error_handler
6701 (_("%pB: warning: older version of object file encountered, "
6702 "please recompile with current tool chain"), ibfd);
6703 }
6704
6705 /* We may need to merge V1 and V2 arch object files to V2. */
6706 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6707 != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6708 {
6709 /* Need to convert version. */
6710 if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6711 == E_NDS_ARCH_STAR_RESERVED)
6712 {
6713 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6714 }
6715 else if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6716 == E_NDS_ARCH_STAR_V3_M
6717 && (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)
6718 == E_NDS_ARCH_STAR_V3_0)
6719 {
6720 elf_elfheader (ibfd)->e_flags =
6721 (elf_elfheader (ibfd)->e_flags & (~EF_NDS_ARCH))
6722 | E_NDS_ARCH_STAR_V3_0;
6723 }
6724 else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)
6725 == E_NDS_ARCH_STAR_V0_9
6726 || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)
6727 > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH))
6728 {
6729 elf_elfheader (obfd)->e_flags =
6730 convert_e_flags (elf_elfheader (obfd)->e_flags,
6731 (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH));
6732 }
6733 else
6734 {
6735 elf_elfheader (ibfd)->e_flags =
6736 convert_e_flags (elf_elfheader (ibfd)->e_flags,
6737 (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH));
6738 }
6739 }
6740
6741 /* Extract some flags. */
6742 in_flags = elf_elfheader (ibfd)->e_flags
6743 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6744 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6745
6746 /* The following flags need special treatment. */
6747 in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6748 in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6749 in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF;
6750
6751 /* Extract some flags. */
6752 out_flags = elf_elfheader (obfd)->e_flags
6753 & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION
6754 | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF));
6755
6756 /* The following flags need special treatment. */
6757 out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS;
6758 out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST;
6759 out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF;
6760 out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION;
6761 if (!elf_flags_init (obfd))
6762 {
6763 /* If the input is the default architecture then do not
6764 bother setting the flags for the output architecture,
6765 instead allow future merges to do this. If no future
6766 merges ever set these flags then they will retain their
6767 unitialised values, which surprise surprise, correspond
6768 to the default values. */
6769 if (bfd_get_arch_info (ibfd)->the_default)
6770 return TRUE;
6771
6772 elf_flags_init (obfd) = TRUE;
6773 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6774
6775 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6776 && bfd_get_arch_info (obfd)->the_default)
6777 {
6778 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6779 bfd_get_mach (ibfd));
6780 }
6781
6782 return TRUE;
6783 }
6784
6785 /* Check flag compatibility. */
6786 if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI))
6787 {
6788 _bfd_error_handler
6789 (_("%pB: error: ABI mismatch with previous modules"), ibfd);
6790 bfd_set_error (bfd_error_bad_value);
6791 return FALSE;
6792 }
6793
6794 if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH))
6795 {
6796 if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH))
6797 {
6798 _bfd_error_handler
6799 (_("%pB: error: instruction set mismatch with previous modules"),
6800 ibfd);
6801
6802 bfd_set_error (bfd_error_bad_value);
6803 return FALSE;
6804 }
6805 }
6806
6807 /* When linking with V1.2 and V1.3 objects together the output is V1.2.
6808 and perf ext1 and DIV are mergerd to perf ext1. */
6809 if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2)
6810 {
6811 elf_elfheader (obfd)->e_flags =
6812 (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6813 | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6814 | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6815 ? E_NDS32_HAS_EXT_INST : 0)
6816 | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST)))
6817 ? E_NDS32_HAS_EXT_INST : 0)
6818 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6819 | ((in_version > out_version) ? out_version : in_version);
6820 }
6821 else
6822 {
6823 if (in_version != out_version)
6824 _bfd_error_handler
6825 /* xgettext:c-format */
6826 (_("%pB: warning: incompatible elf-versions %s and %s"),
6827 ibfd, nds32_elfver_strtab[out_version],
6828 nds32_elfver_strtab[in_version]);
6829
6830 elf_elfheader (obfd)->e_flags = in_flags | out_flags
6831 | (in_16regs & out_16regs) | (in_no_mac & out_no_mac)
6832 | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config)
6833 | (in_version > out_version ? out_version : in_version);
6834 }
6835 }
6836
6837 return TRUE;
6838 }
6839
6840 /* Display the flags field. */
6841
6842 static bfd_boolean
6843 nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6844 {
6845 FILE *file = (FILE *) ptr;
6846
6847 BFD_ASSERT (abfd != NULL && ptr != NULL);
6848
6849 _bfd_elf_print_private_bfd_data (abfd, ptr);
6850
6851 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
6852
6853 switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)
6854 {
6855 default:
6856 case E_N1_ARCH:
6857 fprintf (file, _(": n1 instructions"));
6858 break;
6859 case E_N1H_ARCH:
6860 fprintf (file, _(": n1h instructions"));
6861 break;
6862 }
6863
6864 fputc ('\n', file);
6865
6866 return TRUE;
6867 }
6868
6869 static unsigned int
6870 nds32_elf_action_discarded (asection *sec)
6871 {
6872
6873 if (strncmp
6874 (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0)
6875 return 0;
6876
6877 return _bfd_elf_default_action_discarded (sec);
6878 }
6879
6880 static asection *
6881 nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
6882 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
6883 Elf_Internal_Sym *sym)
6884 {
6885 if (h != NULL)
6886 switch (ELF32_R_TYPE (rel->r_info))
6887 {
6888 case R_NDS32_GNU_VTINHERIT:
6889 case R_NDS32_GNU_VTENTRY:
6890 case R_NDS32_RELA_GNU_VTINHERIT:
6891 case R_NDS32_RELA_GNU_VTENTRY:
6892 return NULL;
6893 }
6894
6895 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6896 }
6897
6898 static enum elf_nds32_tls_type
6899 get_tls_type (enum elf_nds32_reloc_type r_type,
6900 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
6901 {
6902 enum elf_nds32_tls_type tls_type;
6903
6904 switch (r_type)
6905 {
6906 case R_NDS32_TLS_LE_HI20:
6907 case R_NDS32_TLS_LE_LO12:
6908 tls_type = GOT_TLS_LE;
6909 break;
6910 case R_NDS32_TLS_IE_HI20:
6911 case R_NDS32_TLS_IE_LO12S2:
6912 case R_NDS32_TLS_IE_LO12:
6913 tls_type = GOT_TLS_IE;
6914 break;
6915 case R_NDS32_TLS_IEGP_HI20:
6916 case R_NDS32_TLS_IEGP_LO12:
6917 case R_NDS32_TLS_IEGP_LO12S2:
6918 tls_type = GOT_TLS_IEGP;
6919 break;
6920 case R_NDS32_TLS_DESC_HI20:
6921 case R_NDS32_TLS_DESC_LO12:
6922 case R_NDS32_TLS_DESC_ADD:
6923 case R_NDS32_TLS_DESC_FUNC:
6924 case R_NDS32_TLS_DESC_CALL:
6925 tls_type = GOT_TLS_DESC;
6926 break;
6927 default:
6928 tls_type = GOT_NORMAL;
6929 break;
6930 }
6931
6932 return tls_type;
6933 }
6934
6935 /* Ensure that we have allocated bookkeeping structures for ABFD's local
6936 symbols. */
6937
6938 static bfd_boolean
6939 elf32_nds32_allocate_local_sym_info (bfd *abfd)
6940 {
6941 if (elf_local_got_refcounts (abfd) == NULL)
6942 {
6943 bfd_size_type num_syms;
6944 bfd_size_type size;
6945 char *data;
6946
6947 num_syms = elf_tdata (abfd)->symtab_hdr.sh_info;
6948 /* This space is for got_refcounts, got_tls_type, tlsdesc_gotent, and
6949 gp_offset. The details can refer to struct elf_nds32_obj_tdata. */
6950 size = num_syms * (sizeof (bfd_signed_vma) + sizeof (char)
6951 + sizeof (bfd_vma) + sizeof (int)
6952 + sizeof (bfd_boolean) + sizeof (bfd_vma));
6953 data = bfd_zalloc (abfd, size);
6954 if (data == NULL)
6955 return FALSE;
6956
6957 elf_local_got_refcounts (abfd) = (bfd_signed_vma *) data;
6958 data += num_syms * sizeof (bfd_signed_vma);
6959
6960 elf32_nds32_local_got_tls_type (abfd) = (char *) data;
6961 data += num_syms * sizeof (char);
6962
6963 elf32_nds32_local_tlsdesc_gotent (abfd) = (bfd_vma *) data;
6964 data += num_syms * sizeof (bfd_vma);
6965
6966 elf32_nds32_local_gp_offset (abfd) = (int *) data;
6967 data += num_syms * sizeof (int);
6968 }
6969
6970 return TRUE;
6971 }
6972
6973 /* Look through the relocs for a section during the first phase.
6974 Since we don't do .gots or .plts, we just need to consider the
6975 virtual table relocs for gc. */
6976
6977 static bfd_boolean
6978 nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
6979 asection *sec, const Elf_Internal_Rela *relocs)
6980 {
6981 Elf_Internal_Shdr *symtab_hdr;
6982 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
6983 const Elf_Internal_Rela *rel;
6984 const Elf_Internal_Rela *rel_end;
6985 struct elf_link_hash_table *ehtab;
6986 struct elf_nds32_link_hash_table *htab;
6987 bfd *dynobj;
6988 asection *sreloc = NULL;
6989
6990 /* No need for relocation if relocatable already. */
6991 if (bfd_link_relocatable (info))
6992 {
6993 elf32_nds32_check_relax_group (abfd, sec);
6994 return TRUE;
6995 }
6996
6997 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6998 sym_hashes = elf_sym_hashes (abfd);
6999 sym_hashes_end =
7000 sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
7001 if (!elf_bad_symtab (abfd))
7002 sym_hashes_end -= symtab_hdr->sh_info;
7003
7004 ehtab = elf_hash_table (info);
7005 htab = nds32_elf_hash_table (info);
7006 dynobj = htab->root.dynobj;
7007
7008 rel_end = relocs + sec->reloc_count;
7009 for (rel = relocs; rel < rel_end; rel++)
7010 {
7011 enum elf_nds32_reloc_type r_type;
7012 struct elf_link_hash_entry *h;
7013 unsigned long r_symndx;
7014 enum elf_nds32_tls_type tls_type, old_tls_type;
7015
7016 r_symndx = ELF32_R_SYM (rel->r_info);
7017 r_type = ELF32_R_TYPE (rel->r_info);
7018 if (r_symndx < symtab_hdr->sh_info)
7019 h = NULL;
7020 else
7021 {
7022 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7023 while (h->root.type == bfd_link_hash_indirect
7024 || h->root.type == bfd_link_hash_warning)
7025 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7026 }
7027
7028 /* Create .got section if necessary.
7029 Some relocs require a global offset table. We create
7030 got section here, since these relocation need a got section
7031 and if it is not created yet. */
7032 if (ehtab->sgot == NULL)
7033 {
7034 switch (r_type)
7035 {
7036 case R_NDS32_GOT_HI20:
7037 case R_NDS32_GOT_LO12:
7038 case R_NDS32_GOT_LO15:
7039 case R_NDS32_GOT_LO19:
7040 case R_NDS32_GOT17S2_RELA:
7041 case R_NDS32_GOT15S2_RELA:
7042 case R_NDS32_GOTOFF:
7043 case R_NDS32_GOTOFF_HI20:
7044 case R_NDS32_GOTOFF_LO12:
7045 case R_NDS32_GOTOFF_LO15:
7046 case R_NDS32_GOTOFF_LO19:
7047 case R_NDS32_GOTPC20:
7048 case R_NDS32_GOTPC_HI20:
7049 case R_NDS32_GOTPC_LO12:
7050 case R_NDS32_GOT20:
7051 case R_NDS32_TLS_IE_HI20:
7052 case R_NDS32_TLS_IE_LO12:
7053 case R_NDS32_TLS_IE_LO12S2:
7054 case R_NDS32_TLS_IEGP_HI20:
7055 case R_NDS32_TLS_IEGP_LO12:
7056 case R_NDS32_TLS_IEGP_LO12S2:
7057 case R_NDS32_TLS_DESC_HI20:
7058 case R_NDS32_TLS_DESC_LO12:
7059 if (dynobj == NULL)
7060 htab->root.dynobj = dynobj = abfd;
7061 if (!create_got_section (dynobj, info))
7062 return FALSE;
7063 break;
7064
7065 default:
7066 break;
7067 }
7068 }
7069
7070 /* Check relocation type. */
7071 switch ((int) r_type)
7072 {
7073 case R_NDS32_GOT_HI20:
7074 case R_NDS32_GOT_LO12:
7075 case R_NDS32_GOT_LO15:
7076 case R_NDS32_GOT_LO19:
7077 case R_NDS32_GOT20:
7078 case R_NDS32_TLS_LE_HI20:
7079 case R_NDS32_TLS_LE_LO12:
7080 case R_NDS32_TLS_IE_HI20:
7081 case R_NDS32_TLS_IE_LO12:
7082 case R_NDS32_TLS_IE_LO12S2:
7083 case R_NDS32_TLS_IEGP_HI20:
7084 case R_NDS32_TLS_IEGP_LO12:
7085 case R_NDS32_TLS_IEGP_LO12S2:
7086 case R_NDS32_TLS_DESC_HI20:
7087 case R_NDS32_TLS_DESC_LO12:
7088 tls_type = get_tls_type (r_type, h);
7089 if (h)
7090 {
7091 if (tls_type != GOT_TLS_LE)
7092 h->got.refcount += 1;
7093 old_tls_type = elf32_nds32_hash_entry (h)->tls_type;
7094 }
7095 else
7096 {
7097 /* This is a global offset table entry for a local symbol. */
7098 if (!elf32_nds32_allocate_local_sym_info (abfd))
7099 return FALSE;
7100
7101 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7102 if (tls_type != GOT_TLS_LE)
7103 elf_local_got_refcounts (abfd)[r_symndx] += 1;
7104 old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx];
7105 }
7106
7107 /* We would already have issued an error message if there
7108 is a TLS/non-TLS mismatch, based on the symbol
7109 type. So just combine any TLS types needed. */
7110 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7111 && tls_type != GOT_NORMAL)
7112 tls_type |= old_tls_type;
7113
7114 /* DESC to IE/IEGP if link to executable. */
7115 if ((tls_type & (GOT_TLS_DESC | GOT_TLS_IEGP))
7116 && (bfd_link_executable (info)))
7117 tls_type |= (bfd_link_pie (info) ? GOT_TLS_IEGP : GOT_TLS_IE);
7118
7119 if (old_tls_type != tls_type)
7120 {
7121 if (h != NULL)
7122 elf32_nds32_hash_entry (h)->tls_type = tls_type;
7123 else
7124 elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type;
7125 }
7126 break;
7127 case R_NDS32_9_PLTREL:
7128 case R_NDS32_25_PLTREL:
7129 case R_NDS32_PLTREL_HI20:
7130 case R_NDS32_PLTREL_LO12:
7131 case R_NDS32_PLT_GOTREL_HI20:
7132 case R_NDS32_PLT_GOTREL_LO12:
7133 case R_NDS32_PLT_GOTREL_LO15:
7134 case R_NDS32_PLT_GOTREL_LO19:
7135 case R_NDS32_PLT_GOTREL_LO20:
7136
7137 /* This symbol requires a procedure linkage table entry. We
7138 actually build the entry in adjust_dynamic_symbol,
7139 because this might be a case of linking PIC code without
7140 linking in any dynamic objects, in which case we don't
7141 need to generate a procedure linkage table after all. */
7142
7143 /* If this is a local symbol, we resolve it directly without
7144 creating a procedure linkage table entry. */
7145 if (h == NULL)
7146 continue;
7147
7148 if (h->forced_local
7149 || (bfd_link_pie (info) && h->def_regular))
7150 break;
7151
7152 elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL;
7153 h->needs_plt = 1;
7154 h->plt.refcount += 1;
7155 break;
7156
7157 case R_NDS32_16_RELA:
7158 case R_NDS32_20_RELA:
7159 case R_NDS32_5_RELA:
7160 case R_NDS32_32_RELA:
7161 case R_NDS32_HI20_RELA:
7162 case R_NDS32_LO12S3_RELA:
7163 case R_NDS32_LO12S2_RELA:
7164 case R_NDS32_LO12S2_DP_RELA:
7165 case R_NDS32_LO12S2_SP_RELA:
7166 case R_NDS32_LO12S1_RELA:
7167 case R_NDS32_LO12S0_RELA:
7168 case R_NDS32_LO12S0_ORI_RELA:
7169 case R_NDS32_SDA16S3_RELA:
7170 case R_NDS32_SDA17S2_RELA:
7171 case R_NDS32_SDA18S1_RELA:
7172 case R_NDS32_SDA19S0_RELA:
7173 case R_NDS32_SDA15S3_RELA:
7174 case R_NDS32_SDA15S2_RELA:
7175 case R_NDS32_SDA12S2_DP_RELA:
7176 case R_NDS32_SDA12S2_SP_RELA:
7177 case R_NDS32_SDA15S1_RELA:
7178 case R_NDS32_SDA15S0_RELA:
7179 case R_NDS32_SDA_FP7U2_RELA:
7180 case R_NDS32_15_PCREL_RELA:
7181 case R_NDS32_17_PCREL_RELA:
7182 case R_NDS32_25_PCREL_RELA:
7183
7184 if (h != NULL && !bfd_link_pic (info))
7185 {
7186 h->non_got_ref = 1;
7187 h->plt.refcount += 1;
7188 }
7189
7190 /* If we are creating a shared library, and this is a reloc against
7191 a global symbol, or a non PC relative reloc against a local
7192 symbol, then we need to copy the reloc into the shared library.
7193 However, if we are linking with -Bsymbolic, we do not need to
7194 copy a reloc against a global symbol which is defined in an
7195 object we are including in the link (i.e., DEF_REGULAR is set).
7196 At this point we have not seen all the input files, so it is
7197 possible that DEF_REGULAR is not set now but will be set later
7198 (it is never cleared). We account for that possibility below by
7199 storing information in the dyn_relocs field of the hash table
7200 entry. A similar situation occurs when creating shared libraries
7201 and symbol visibility changes render the symbol local.
7202
7203 If on the other hand, we are creating an executable, we may need
7204 to keep relocations for symbols satisfied by a dynamic library
7205 if we manage to avoid copy relocs for the symbol. */
7206 if ((bfd_link_pic (info)
7207 && (sec->flags & SEC_ALLOC) != 0
7208 && ((r_type != R_NDS32_25_PCREL_RELA
7209 && r_type != R_NDS32_15_PCREL_RELA
7210 && r_type != R_NDS32_17_PCREL_RELA
7211 && !(r_type == R_NDS32_32_RELA
7212 && strcmp (sec->name, ".eh_frame") == 0))
7213 || (h != NULL
7214 && (!info->symbolic
7215 || h->root.type == bfd_link_hash_defweak
7216 || !h->def_regular))))
7217 || (!bfd_link_pic (info)
7218 && (sec->flags & SEC_ALLOC) != 0
7219 && h != NULL
7220 && (h->root.type == bfd_link_hash_defweak
7221 || !h->def_regular)))
7222 {
7223 struct elf_dyn_relocs *p;
7224 struct elf_dyn_relocs **head;
7225
7226 if (dynobj == NULL)
7227 htab->root.dynobj = dynobj = abfd;
7228
7229 /* When creating a shared object, we must copy these
7230 relocs into the output file. We create a reloc
7231 section in dynobj and make room for the reloc. */
7232 if (sreloc == NULL)
7233 {
7234 const char *name;
7235
7236 name = bfd_elf_string_from_elf_section
7237 (abfd, elf_elfheader (abfd)->e_shstrndx,
7238 elf_section_data (sec)->rela.hdr->sh_name);
7239 if (name == NULL)
7240 return FALSE;
7241
7242 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
7243 && strcmp (bfd_section_name (sec),
7244 name + 5) == 0);
7245
7246 sreloc = bfd_get_section_by_name (dynobj, name);
7247 if (sreloc == NULL)
7248 {
7249 flagword flags;
7250
7251 sreloc = bfd_make_section (dynobj, name);
7252 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7253 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
7254 if ((sec->flags & SEC_ALLOC) != 0)
7255 flags |= SEC_ALLOC | SEC_LOAD;
7256 if (sreloc == NULL
7257 || !bfd_set_section_flags (sreloc, flags)
7258 || !bfd_set_section_alignment (sreloc, 2))
7259 return FALSE;
7260
7261 elf_section_type (sreloc) = SHT_RELA;
7262 }
7263 elf_section_data (sec)->sreloc = sreloc;
7264 }
7265
7266 /* If this is a global symbol, we count the number of
7267 relocations we need for this symbol. */
7268 if (h != NULL)
7269 head = &h->dyn_relocs;
7270 else
7271 {
7272 asection *s;
7273 void *vpp;
7274
7275 Elf_Internal_Sym *isym;
7276 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
7277 abfd, r_symndx);
7278 if (isym == NULL)
7279 return FALSE;
7280
7281 /* Track dynamic relocs needed for local syms too. */
7282 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7283 if (s == NULL)
7284 return FALSE;
7285
7286 vpp = &elf_section_data (s)->local_dynrel;
7287 head = (struct elf_dyn_relocs **) vpp;
7288 }
7289
7290 p = *head;
7291 if (p == NULL || p->sec != sec)
7292 {
7293 size_t amt = sizeof (*p);
7294 p = (struct elf_dyn_relocs *) bfd_alloc (dynobj, amt);
7295 if (p == NULL)
7296 return FALSE;
7297 p->next = *head;
7298 *head = p;
7299 p->sec = sec;
7300 p->count = 0;
7301 p->pc_count = 0;
7302 }
7303
7304 p->count += 1;
7305
7306 /* Since eh_frame is readonly, R_NDS32_32_RELA
7307 reloc for eh_frame will cause shared library has
7308 TEXTREL entry in the dynamic section. This lead glibc
7309 testsuites to failure (bug-13092) and cause kernel fail
7310 (bug-11819). I think the best solution is to replace
7311 absolute reloc with pc relative reloc in the eh_frame.
7312 To do that, we need to support the following issues:
7313
7314 === For GCC ===
7315 * gcc/config/nds32/nds32.h: Define
7316 ASM_PREFERRED_EH_DATA_FORMAT to encode DW_EH_PE_pcrel
7317 and DW_EH_PE_sdata4 into DWARF exception header when
7318 option have '-fpic'.
7319
7320 === For binutils ===
7321 * bfd/: Define new reloc R_NDS32_32_PCREL_RELA.
7322 * gas/config/tc-nds32.h: Define DIFF_EXPR_OK. This
7323 may break our nds DIFF mechanism, therefore, we
7324 must disable all linker relaxations to ensure
7325 correctness.
7326 * gas/config/tc-nds32.c (nds32_apply_fix): Replace
7327 R_NDS32_32_RELA with R_NDS32_32_PCREL_RELA, and
7328 do the necessary modification.
7329
7330 Unfortunately, it still have some problems for nds32
7331 to support pc relative reloc in the eh_frame. So I use
7332 another solution to fix this issue.
7333
7334 However, I find that ld always emit TEXTREL marker for
7335 R_NDS32_NONE relocs in rel.dyn. These none relocs are
7336 correspond to R_NDS32_32_RELA for .eh_frame section.
7337 It means that we always reserve redundant entries of rel.dyn
7338 for these relocs which actually do nothing in dynamic linker.
7339
7340 Therefore, we regard these relocs as pc relative relocs
7341 here and increase the pc_count. */
7342 if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA
7343 || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA
7344 || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA
7345 || (r_type == R_NDS32_32_RELA
7346 && strcmp (sec->name, ".eh_frame") == 0))
7347 p->pc_count += 1;
7348 }
7349 break;
7350
7351 /* This relocation describes the C++ object vtable hierarchy.
7352 Reconstruct it for later use during GC. */
7353 case R_NDS32_RELA_GNU_VTINHERIT:
7354 case R_NDS32_GNU_VTINHERIT:
7355 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
7356 return FALSE;
7357 break;
7358
7359 /* This relocation describes which C++ vtable entries are actually
7360 used. Record for later use during GC. */
7361 case R_NDS32_GNU_VTENTRY:
7362 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
7363 return FALSE;
7364 break;
7365 case R_NDS32_RELA_GNU_VTENTRY:
7366 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
7367 return FALSE;
7368 break;
7369 }
7370 }
7371
7372 return TRUE;
7373 }
7374
7375 /* Write VAL in uleb128 format to P, returning a pointer to the
7376 following byte.
7377 This code is copied from elf-attr.c. */
7378
7379 static bfd_byte *
7380 write_uleb128 (bfd_byte *p, unsigned int val)
7381 {
7382 bfd_byte c;
7383 do
7384 {
7385 c = val & 0x7f;
7386 val >>= 7;
7387 if (val)
7388 c |= 0x80;
7389 *(p++) = c;
7390 }
7391 while (val);
7392 return p;
7393 }
7394
7395 static bfd_signed_vma
7396 calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
7397 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
7398 {
7399 bfd_signed_vma foff;
7400 bfd_vma symval, addend;
7401 asection *sym_sec;
7402
7403 /* Get the value of the symbol referred to by the reloc. */
7404 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7405 {
7406 Elf_Internal_Sym *isym;
7407
7408 /* A local symbol. */
7409 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7410
7411 if (isym->st_shndx == SHN_UNDEF)
7412 sym_sec = bfd_und_section_ptr;
7413 else if (isym->st_shndx == SHN_ABS)
7414 sym_sec = bfd_abs_section_ptr;
7415 else if (isym->st_shndx == SHN_COMMON)
7416 sym_sec = bfd_com_section_ptr;
7417 else
7418 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7419 symval = isym->st_value + sym_sec->output_section->vma
7420 + sym_sec->output_offset;
7421 }
7422 else
7423 {
7424 unsigned long indx;
7425 struct elf_link_hash_entry *h;
7426
7427 /* An external symbol. */
7428 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7429 h = elf_sym_hashes (abfd)[indx];
7430 BFD_ASSERT (h != NULL);
7431
7432 if (h->root.type != bfd_link_hash_defined
7433 && h->root.type != bfd_link_hash_defweak)
7434 /* This appears to be a reference to an undefined
7435 symbol. Just ignore it--it will be caught by the
7436 regular reloc processing. */
7437 return 0;
7438
7439 if (h->root.u.def.section->flags & SEC_MERGE)
7440 {
7441 sym_sec = h->root.u.def.section;
7442 symval = _bfd_merged_section_offset (abfd, &sym_sec,
7443 elf_section_data (sym_sec)->sec_info,
7444 h->root.u.def.value);
7445 symval = symval + sym_sec->output_section->vma
7446 + sym_sec->output_offset;
7447 }
7448 else
7449 symval = (h->root.u.def.value
7450 + h->root.u.def.section->output_section->vma
7451 + h->root.u.def.section->output_offset);
7452 }
7453
7454 addend = irel->r_addend;
7455
7456 foff = (symval + addend
7457 - (irel->r_offset + sec->output_section->vma + sec->output_offset));
7458 return foff;
7459 }
7460 \f
7461
7462 /* Convert a 32-bit instruction to 16-bit one.
7463 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
7464 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
7465 type of INSN16. Return 1 if successful. */
7466
7467 static int
7468 nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7469 int *pinsn_type)
7470 {
7471 uint16_t insn16 = 0;
7472 int insn_type = 0;
7473 unsigned long mach = bfd_get_mach (abfd);
7474
7475 if (N32_SH5 (insn) != 0)
7476 return 0;
7477
7478 switch (N32_SUB5 (insn))
7479 {
7480 case N32_ALU1_ADD_SLLI:
7481 case N32_ALU1_ADD_SRLI:
7482 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
7483 {
7484 insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn),
7485 N32_RB5 (insn));
7486 insn_type = NDS32_INSN_ADD333;
7487 }
7488 else if (N32_IS_RT4 (insn))
7489 {
7490 if (N32_RT5 (insn) == N32_RA5 (insn))
7491 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn));
7492 else if (N32_RT5 (insn) == N32_RB5 (insn))
7493 insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn));
7494 insn_type = NDS32_INSN_ADD45;
7495 }
7496 break;
7497
7498 case N32_ALU1_SUB_SLLI:
7499 case N32_ALU1_SUB_SRLI:
7500 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn))
7501 {
7502 insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn),
7503 N32_RB5 (insn));
7504 insn_type = NDS32_INSN_SUB333;
7505 }
7506 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
7507 {
7508 insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn));
7509 insn_type = NDS32_INSN_SUB45;
7510 }
7511 break;
7512
7513 case N32_ALU1_AND_SLLI:
7514 case N32_ALU1_AND_SRLI:
7515 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
7516 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7517 && N32_IS_RB3 (insn))
7518 {
7519 if (N32_RT5 (insn) == N32_RA5 (insn))
7520 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn));
7521 else if (N32_RT5 (insn) == N32_RB5 (insn))
7522 insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn));
7523 if (insn16)
7524 insn_type = NDS32_INSN_AND33;
7525 }
7526 break;
7527
7528 case N32_ALU1_XOR_SLLI:
7529 case N32_ALU1_XOR_SRLI:
7530 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
7531 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7532 && N32_IS_RB3 (insn))
7533 {
7534 if (N32_RT5 (insn) == N32_RA5 (insn))
7535 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn));
7536 else if (N32_RT5 (insn) == N32_RB5 (insn))
7537 insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn));
7538 if (insn16)
7539 insn_type = NDS32_INSN_XOR33;
7540 }
7541 break;
7542
7543 case N32_ALU1_OR_SLLI:
7544 case N32_ALU1_OR_SRLI:
7545 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
7546 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7547 && N32_IS_RB3 (insn))
7548 {
7549 if (N32_RT5 (insn) == N32_RA5 (insn))
7550 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn));
7551 else if (N32_RT5 (insn) == N32_RB5 (insn))
7552 insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn));
7553 if (insn16)
7554 insn_type = NDS32_INSN_OR33;
7555 }
7556 break;
7557 case N32_ALU1_NOR:
7558 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
7559 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn)
7560 && N32_RA5 (insn) == N32_RB5 (insn))
7561 {
7562 insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn));
7563 insn_type = NDS32_INSN_NOT33;
7564 }
7565 break;
7566 case N32_ALU1_SRAI:
7567 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
7568 {
7569 insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn));
7570 insn_type = NDS32_INSN_SRAI45;
7571 }
7572 break;
7573
7574 case N32_ALU1_SRLI:
7575 if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn))
7576 {
7577 insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn));
7578 insn_type = NDS32_INSN_SRLI45;
7579 }
7580 break;
7581
7582 case N32_ALU1_SLLI:
7583 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8)
7584 {
7585 insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn),
7586 N32_UB5 (insn));
7587 insn_type = NDS32_INSN_SLLI333;
7588 }
7589 break;
7590
7591 case N32_ALU1_ZEH:
7592 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7593 {
7594 insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn));
7595 insn_type = NDS32_INSN_ZEH33;
7596 }
7597 break;
7598
7599 case N32_ALU1_SEB:
7600 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7601 {
7602 insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn));
7603 insn_type = NDS32_INSN_SEB33;
7604 }
7605 break;
7606
7607 case N32_ALU1_SEH:
7608 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7609 {
7610 insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn));
7611 insn_type = NDS32_INSN_SEH33;
7612 }
7613 break;
7614
7615 case N32_ALU1_SLT:
7616 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7617 {
7618 /* Implicit r15. */
7619 insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn));
7620 insn_type = NDS32_INSN_SLT45;
7621 }
7622 break;
7623
7624 case N32_ALU1_SLTS:
7625 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn))
7626 {
7627 /* Implicit r15. */
7628 insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn));
7629 insn_type = NDS32_INSN_SLTS45;
7630 }
7631 break;
7632 }
7633
7634 if ((insn16 & 0x8000) == 0)
7635 return 0;
7636
7637 if (pinsn16)
7638 *pinsn16 = insn16;
7639 if (pinsn_type)
7640 *pinsn_type = insn_type;
7641 return 1;
7642 }
7643
7644 static int
7645 nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7646 int *pinsn_type)
7647 {
7648 uint16_t insn16 = 0;
7649 int insn_type;
7650 unsigned long mach = bfd_get_mach (abfd);
7651
7652 /* TODO: bset, bclr, btgl, btst. */
7653 if (__GF (insn, 6, 4) != 0)
7654 return 0;
7655
7656 switch (N32_IMMU (insn, 6))
7657 {
7658 case N32_ALU2_MUL:
7659 if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7660 && N32_IS_RB3 (insn))
7661 {
7662 if (N32_RT5 (insn) == N32_RA5 (insn))
7663 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn));
7664 else if (N32_RT5 (insn) == N32_RB5 (insn))
7665 insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn));
7666 if (insn16)
7667 insn_type = NDS32_INSN_MUL33;
7668 }
7669 }
7670
7671 if ((insn16 & 0x8000) == 0)
7672 return 0;
7673
7674 if (pinsn16)
7675 *pinsn16 = insn16;
7676 if (pinsn_type)
7677 *pinsn_type = insn_type;
7678 return 1;
7679 }
7680
7681 int
7682 nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16,
7683 int *pinsn_type)
7684 {
7685 int op6;
7686 uint16_t insn16 = 0;
7687 int insn_type = 0;
7688 unsigned long mach = bfd_get_mach (abfd);
7689
7690 /* Decode 32-bit instruction. */
7691 if (insn & 0x80000000)
7692 {
7693 /* Not 32-bit insn. */
7694 return 0;
7695 }
7696
7697 op6 = N32_OP6 (insn);
7698
7699 /* Convert it to 16-bit instruction. */
7700 switch (op6)
7701 {
7702 case N32_OP6_MOVI:
7703 if (IS_WITHIN_S (N32_IMM20S (insn), 5))
7704 {
7705 insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn));
7706 insn_type = NDS32_INSN_MOVI55;
7707 }
7708 else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16
7709 && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn))
7710 {
7711 insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn),
7712 N32_IMM20S (insn) - 16);
7713 insn_type = NDS32_INSN_MOVPI45;
7714 }
7715 break;
7716
7717 case N32_OP6_ADDI:
7718 if (N32_IMM15S (insn) == 0)
7719 {
7720 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
7721 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7722 if (mach <= MACH_V2
7723 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7724 {
7725 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7726 insn_type = NDS32_INSN_MOV55;
7727 }
7728 }
7729 else if (N32_IMM15S (insn) > 0)
7730 {
7731 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8)
7732 {
7733 insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn),
7734 N32_IMM15S (insn));
7735 insn_type = NDS32_INSN_ADDI333;
7736 }
7737 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7738 && N32_IMM15S (insn) < 32)
7739 {
7740 insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn));
7741 insn_type = NDS32_INSN_ADDI45;
7742 }
7743 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7744 && N32_RT5 (insn) == N32_RA5 (insn)
7745 && N32_IMM15S (insn) < 512)
7746 {
7747 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7748 insn_type = NDS32_INSN_ADDI10_SP;
7749 }
7750 else if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7751 && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256
7752 && (N32_IMM15S (insn) % 4 == 0))
7753 {
7754 insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn),
7755 N32_IMM15S (insn) >> 2);
7756 insn_type = NDS32_INSN_ADDRI36_SP;
7757 }
7758 }
7759 else
7760 {
7761 /* Less than 0. */
7762 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8)
7763 {
7764 insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn),
7765 0 - N32_IMM15S (insn));
7766 insn_type = NDS32_INSN_SUBI333;
7767 }
7768 else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)
7769 && N32_IMM15S (insn) > -32)
7770 {
7771 insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn),
7772 0 - N32_IMM15S (insn));
7773 insn_type = NDS32_INSN_SUBI45;
7774 }
7775 else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP
7776 && N32_RT5 (insn) == N32_RA5 (insn)
7777 && N32_IMM15S (insn) >= -512)
7778 {
7779 insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn));
7780 insn_type = NDS32_INSN_ADDI10_SP;
7781 }
7782 }
7783 break;
7784
7785 case N32_OP6_ORI:
7786 if (N32_IMM15S (insn) == 0)
7787 {
7788 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
7789 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
7790 if (mach <= MACH_V2
7791 || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP)
7792 {
7793 insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn));
7794 insn_type = NDS32_INSN_MOV55;
7795 }
7796 }
7797 break;
7798
7799 case N32_OP6_SUBRI:
7800 if (mach >= MACH_V3 && N32_IS_RT3 (insn)
7801 && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0)
7802 {
7803 insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn));
7804 insn_type = NDS32_INSN_NEG33;
7805 }
7806 break;
7807
7808 case N32_OP6_ANDI:
7809 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn))
7810 {
7811 if (N32_IMM15U (insn) == 1)
7812 {
7813 insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn));
7814 insn_type = NDS32_INSN_XLSB33;
7815 }
7816 else if (N32_IMM15U (insn) == 0x7ff)
7817 {
7818 insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn));
7819 insn_type = NDS32_INSN_X11B33;
7820 }
7821 else if (N32_IMM15U (insn) == 0xff)
7822 {
7823 insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn));
7824 insn_type = NDS32_INSN_ZEB33;
7825 }
7826 else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn)
7827 && N32_IMM15U (insn) < 256)
7828 {
7829 int imm15u = N32_IMM15U (insn);
7830
7831 if (__builtin_popcount (imm15u) == 1)
7832 {
7833 /* BMSKI33 */
7834 int imm3u = __builtin_ctz (imm15u);
7835
7836 insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u);
7837 insn_type = NDS32_INSN_BMSKI33;
7838 }
7839 else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1)
7840 {
7841 /* FEXTI33 */
7842 int imm3u = __builtin_ctz (imm15u + 1) - 1;
7843
7844 insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u);
7845 insn_type = NDS32_INSN_FEXTI33;
7846 }
7847 }
7848 }
7849 break;
7850
7851 case N32_OP6_SLTI:
7852 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7853 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7854 {
7855 insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn));
7856 insn_type = NDS32_INSN_SLTI45;
7857 }
7858 break;
7859
7860 case N32_OP6_SLTSI:
7861 if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)
7862 && IS_WITHIN_U (N32_IMM15S (insn), 5))
7863 {
7864 insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn));
7865 insn_type = NDS32_INSN_SLTSI45;
7866 }
7867 break;
7868
7869 case N32_OP6_LWI:
7870 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7871 {
7872 insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn));
7873 insn_type = NDS32_INSN_LWI450;
7874 }
7875 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7876 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7877 {
7878 insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn),
7879 N32_IMM15S (insn));
7880 insn_type = NDS32_INSN_LWI333;
7881 }
7882 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7883 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7884 {
7885 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
7886 insn_type = NDS32_INSN_LWI37;
7887 }
7888 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7889 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7890 {
7891 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn));
7892 insn_type = NDS32_INSN_LWI37_SP;
7893 }
7894 else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8
7895 && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0)
7896 {
7897 insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn),
7898 N32_IMM15S (insn) + 32);
7899 insn_type = NDS32_INSN_LWI45_FE;
7900 }
7901 break;
7902
7903 case N32_OP6_SWI:
7904 if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0)
7905 {
7906 insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn));
7907 insn_type = NDS32_INSN_SWI450;
7908 }
7909 else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7910 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7911 {
7912 insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn),
7913 N32_IMM15S (insn));
7914 insn_type = NDS32_INSN_SWI333;
7915 }
7916 else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP
7917 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7918 {
7919 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
7920 insn_type = NDS32_INSN_SWI37;
7921 }
7922 else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP
7923 && IS_WITHIN_U (N32_IMM15S (insn), 7))
7924 {
7925 insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn));
7926 insn_type = NDS32_INSN_SWI37_SP;
7927 }
7928 break;
7929
7930 case N32_OP6_LWI_BI:
7931 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7932 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7933 {
7934 insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7935 N32_IMM15S (insn));
7936 insn_type = NDS32_INSN_LWI333_BI;
7937 }
7938 break;
7939
7940 case N32_OP6_SWI_BI:
7941 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7942 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7943 {
7944 insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn),
7945 N32_IMM15S (insn));
7946 insn_type = NDS32_INSN_SWI333_BI;
7947 }
7948 break;
7949
7950 case N32_OP6_LHI:
7951 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7952 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7953 {
7954 insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn),
7955 N32_IMM15S (insn));
7956 insn_type = NDS32_INSN_LHI333;
7957 }
7958 break;
7959
7960 case N32_OP6_SHI:
7961 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7962 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7963 {
7964 insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn),
7965 N32_IMM15S (insn));
7966 insn_type = NDS32_INSN_SHI333;
7967 }
7968 break;
7969
7970 case N32_OP6_LBI:
7971 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7972 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7973 {
7974 insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn),
7975 N32_IMM15S (insn));
7976 insn_type = NDS32_INSN_LBI333;
7977 }
7978 break;
7979
7980 case N32_OP6_SBI:
7981 if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)
7982 && IS_WITHIN_U (N32_IMM15S (insn), 3))
7983 {
7984 insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn),
7985 N32_IMM15S (insn));
7986 insn_type = NDS32_INSN_SBI333;
7987 }
7988 break;
7989
7990 case N32_OP6_ALU1:
7991 return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type);
7992
7993 case N32_OP6_ALU2:
7994 return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type);
7995
7996 case N32_OP6_BR1:
7997 if (!IS_WITHIN_S (N32_IMM14S (insn), 8))
7998 goto done;
7999
8000 if ((insn & N32_BIT (14)) == 0)
8001 {
8002 /* N32_BR1_BEQ */
8003 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
8004 && N32_RT5 (insn) != REG_R5)
8005 insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn));
8006 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
8007 && N32_RA5 (insn) != REG_R5)
8008 insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn));
8009 insn_type = NDS32_INSN_BEQS38;
8010 break;
8011 }
8012 else
8013 {
8014 /* N32_BR1_BNE */
8015 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5
8016 && N32_RT5 (insn) != REG_R5)
8017 insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn));
8018 else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5
8019 && N32_RA5 (insn) != REG_R5)
8020 insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn));
8021 insn_type = NDS32_INSN_BNES38;
8022 break;
8023 }
8024 break;
8025
8026 case N32_OP6_BR2:
8027 switch (N32_BR2_SUB (insn))
8028 {
8029 case N32_BR2_BEQZ:
8030 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
8031 {
8032 insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn));
8033 insn_type = NDS32_INSN_BEQZ38;
8034 }
8035 else if (N32_RT5 (insn) == REG_R15
8036 && IS_WITHIN_S (N32_IMM16S (insn), 8))
8037 {
8038 insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn));
8039 insn_type = NDS32_INSN_BEQZS8;
8040 }
8041 break;
8042
8043 case N32_BR2_BNEZ:
8044 if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8))
8045 {
8046 insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn));
8047 insn_type = NDS32_INSN_BNEZ38;
8048 }
8049 else if (N32_RT5 (insn) == REG_R15
8050 && IS_WITHIN_S (N32_IMM16S (insn), 8))
8051 {
8052 insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn));
8053 insn_type = NDS32_INSN_BNEZS8;
8054 }
8055 break;
8056
8057 case N32_BR2_SOP0:
8058 if (__GF (insn, 20, 5) == 0 && IS_WITHIN_U (N32_IMM16S (insn), 9))
8059 {
8060 insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn));
8061 insn_type = NDS32_INSN_IFCALL9;
8062 }
8063 break;
8064 }
8065 break;
8066
8067 case N32_OP6_JI:
8068 if ((insn & N32_BIT (24)) == 0)
8069 {
8070 /* N32_JI_J */
8071 if (IS_WITHIN_S (N32_IMM24S (insn), 8))
8072 {
8073 insn16 = N16_TYPE8 (J8, N32_IMM24S (insn));
8074 insn_type = NDS32_INSN_J8;
8075 }
8076 }
8077 break;
8078
8079 case N32_OP6_JREG:
8080 if (__GF (insn, 8, 2) != 0)
8081 goto done;
8082
8083 switch (N32_IMMU (insn, 5))
8084 {
8085 case N32_JREG_JR:
8086 if (N32_JREG_HINT (insn) == 0)
8087 {
8088 /* jr */
8089 insn16 = N16_TYPE5 (JR5, N32_RB5 (insn));
8090 insn_type = NDS32_INSN_JR5;
8091 }
8092 else if (N32_JREG_HINT (insn) == 1)
8093 {
8094 /* ret */
8095 insn16 = N16_TYPE5 (RET5, N32_RB5 (insn));
8096 insn_type = NDS32_INSN_RET5;
8097 }
8098 else if (N32_JREG_HINT (insn) == 3)
8099 {
8100 /* ifret = mov55 $sp, $sp */
8101 insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP);
8102 insn_type = NDS32_INSN_IFRET;
8103 }
8104 break;
8105
8106 case N32_JREG_JRAL:
8107 /* It's convertible when return rt5 is $lp and address
8108 translation is kept. */
8109 if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0)
8110 {
8111 insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn));
8112 insn_type = NDS32_INSN_JRAL5;
8113 }
8114 break;
8115 }
8116 break;
8117
8118 case N32_OP6_MISC:
8119 if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32)
8120 {
8121 /* For v3, swid above 31 are used for ex9.it. */
8122 insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn));
8123 insn_type = NDS32_INSN_BREAK16;
8124 }
8125 break;
8126
8127 default:
8128 /* This instruction has no 16-bit variant. */
8129 goto done;
8130 }
8131
8132 done:
8133 /* Bit-15 of insn16 should be set for a valid instruction. */
8134 if ((insn16 & 0x8000) == 0)
8135 return 0;
8136
8137 if (pinsn16)
8138 *pinsn16 = insn16;
8139 if (pinsn_type)
8140 *pinsn_type = insn_type;
8141 return 1;
8142 }
8143
8144 static int
8145 special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16,
8146 Elf_Internal_Rela *reloc)
8147 {
8148 uint16_t insn16 = 0;
8149
8150 if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0
8151 || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16))
8152 return 0;
8153
8154 if (!N32_IS_RT3 (insn))
8155 return 0;
8156
8157 switch (N32_OP6 (insn))
8158 {
8159 case N32_OP6_LWI:
8160 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
8161 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn));
8162 break;
8163 case N32_OP6_SWI:
8164 if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7))
8165 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn));
8166 break;
8167 case N32_OP6_HWGP:
8168 if (!IS_WITHIN_U (N32_IMM17S (insn), 7))
8169 break;
8170
8171 if (__GF (insn, 17, 3) == 6)
8172 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn));
8173 else if (__GF (insn, 17, 3) == 7)
8174 insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn));
8175 break;
8176 }
8177
8178 if ((insn16 & 0x8000) == 0)
8179 return 0;
8180
8181 *pinsn16 = insn16;
8182 return 1;
8183 }
8184
8185 /* Convert a 16-bit instruction to 32-bit one.
8186 INSN16 it the input and PINSN it the point to output.
8187 Return non-zero on successful. Otherwise 0 is returned. */
8188
8189 int
8190 nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn)
8191 {
8192 uint32_t insn = 0xffffffff;
8193 unsigned long mach = bfd_get_mach (abfd);
8194
8195 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
8196
8197 switch (__GF (insn16, 9, 6))
8198 {
8199 case 0x4: /* add45 */
8200 insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16),
8201 N16_RA5 (insn16));
8202 goto done;
8203 case 0x5: /* sub45 */
8204 insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16),
8205 N16_RA5 (insn16));
8206 goto done;
8207 case 0x6: /* addi45 */
8208 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
8209 N16_IMM5U (insn16));
8210 goto done;
8211 case 0x7: /* subi45 */
8212 insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16),
8213 -N16_IMM5U (insn16));
8214 goto done;
8215 case 0x8: /* srai45 */
8216 insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16),
8217 N16_IMM5U (insn16));
8218 goto done;
8219 case 0x9: /* srli45 */
8220 insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16),
8221 N16_IMM5U (insn16));
8222 goto done;
8223 case 0xa: /* slli333 */
8224 insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16),
8225 N16_IMM3U (insn16));
8226 goto done;
8227 case 0xc: /* add333 */
8228 insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16),
8229 N16_RB3 (insn16));
8230 goto done;
8231 case 0xd: /* sub333 */
8232 insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16),
8233 N16_RB3 (insn16));
8234 goto done;
8235 case 0xe: /* addi333 */
8236 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
8237 N16_IMM3U (insn16));
8238 goto done;
8239 case 0xf: /* subi333 */
8240 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16),
8241 -N16_IMM3U (insn16));
8242 goto done;
8243 case 0x10: /* lwi333 */
8244 insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16),
8245 N16_IMM3U (insn16));
8246 goto done;
8247 case 0x12: /* lhi333 */
8248 insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16),
8249 N16_IMM3U (insn16));
8250 goto done;
8251 case 0x13: /* lbi333 */
8252 insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16),
8253 N16_IMM3U (insn16));
8254 goto done;
8255 case 0x11: /* lwi333.bi */
8256 insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
8257 N16_IMM3U (insn16));
8258 goto done;
8259 case 0x14: /* swi333 */
8260 insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16),
8261 N16_IMM3U (insn16));
8262 goto done;
8263 case 0x16: /* shi333 */
8264 insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16),
8265 N16_IMM3U (insn16));
8266 goto done;
8267 case 0x17: /* sbi333 */
8268 insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16),
8269 N16_IMM3U (insn16));
8270 goto done;
8271 case 0x15: /* swi333.bi */
8272 insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16),
8273 N16_IMM3U (insn16));
8274 goto done;
8275 case 0x18: /* addri36.sp */
8276 insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP,
8277 N16_IMM6U (insn16) << 2);
8278 goto done;
8279 case 0x19: /* lwi45.fe */
8280 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8,
8281 (N16_IMM5U (insn16) - 32));
8282 goto done;
8283 case 0x1a: /* lwi450 */
8284 insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
8285 goto done;
8286 case 0x1b: /* swi450 */
8287 insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0);
8288 goto done;
8289
8290 /* These are r15 implied instructions. */
8291 case 0x30: /* slts45 */
8292 insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
8293 goto done;
8294 case 0x31: /* slt45 */
8295 insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16));
8296 goto done;
8297 case 0x32: /* sltsi45 */
8298 insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
8299 goto done;
8300 case 0x33: /* slti45 */
8301 insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16));
8302 goto done;
8303 case 0x34: /* beqzs8, bnezs8 */
8304 if (insn16 & N32_BIT (8))
8305 insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16));
8306 else
8307 insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16));
8308 goto done;
8309
8310 case 0x35: /* break16, ex9.it */
8311 /* Only consider range of v3 break16. */
8312 insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK);
8313 goto done;
8314
8315 case 0x3c: /* ifcall9 */
8316 insn = N32_BR2 (SOP0, 0, N16_IMM9U (insn16));
8317 goto done;
8318 case 0x3d: /* movpi45 */
8319 insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16);
8320 goto done;
8321
8322 case 0x3f: /* MISC33 */
8323 switch (insn16 & 0x7)
8324 {
8325 case 2: /* neg33 */
8326 insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0);
8327 break;
8328 case 3: /* not33 */
8329 insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16),
8330 N16_RA3 (insn16));
8331 break;
8332 case 4: /* mul33 */
8333 insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16),
8334 N16_RA3 (insn16));
8335 break;
8336 case 5: /* xor33 */
8337 insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16),
8338 N16_RA3 (insn16));
8339 break;
8340 case 6: /* and33 */
8341 insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16),
8342 N16_RA3 (insn16));
8343 break;
8344 case 7: /* or33 */
8345 insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16),
8346 N16_RA3 (insn16));
8347 break;
8348 }
8349 goto done;
8350
8351 case 0xb:
8352 switch (insn16 & 0x7)
8353 {
8354 case 0: /* zeb33 */
8355 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff);
8356 break;
8357 case 1: /* zeh33 */
8358 insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
8359 break;
8360 case 2: /* seb33 */
8361 insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0);
8362 break;
8363 case 3: /* seh33 */
8364 insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0);
8365 break;
8366 case 4: /* xlsb33 */
8367 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1);
8368 break;
8369 case 5: /* x11b33 */
8370 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff);
8371 break;
8372 case 6: /* bmski33 */
8373 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
8374 1 << __GF (insn16, 3, 3));
8375 break;
8376 case 7: /* fexti33 */
8377 insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16),
8378 (1 << (__GF (insn16, 3, 3) + 1)) - 1);
8379 break;
8380 }
8381 goto done;
8382 }
8383
8384 switch (__GF (insn16, 10, 5))
8385 {
8386 case 0x0: /* mov55 or ifret16 */
8387 if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP
8388 && N16_RT5 (insn16) == N16_RA5 (insn16))
8389 insn = N32_JREG (JR, 0, 0, 0, 3);
8390 else
8391 insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0);
8392 goto done;
8393 case 0x1: /* movi55 */
8394 insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16));
8395 goto done;
8396 case 0x1b: /* addi10s (V2) */
8397 insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16));
8398 goto done;
8399 }
8400
8401 switch (__GF (insn16, 11, 4))
8402 {
8403 case 0x7: /* lwi37.fp/swi37.fp */
8404 if (insn16 & N32_BIT (7)) /* swi37.fp */
8405 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
8406 else /* lwi37.fp */
8407 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16));
8408 goto done;
8409 case 0x8: /* beqz38 */
8410 insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16));
8411 goto done;
8412 case 0x9: /* bnez38 */
8413 insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16));
8414 goto done;
8415 case 0xa: /* beqs38/j8, implied r5 */
8416 if (N16_RT38 (insn16) == 5)
8417 insn = N32_JI (J, N16_IMM8S (insn16));
8418 else
8419 insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
8420 goto done;
8421 case 0xb: /* bnes38 and others. */
8422 if (N16_RT38 (insn16) == 5)
8423 {
8424 switch (__GF (insn16, 5, 3))
8425 {
8426 case 0: /* jr5 */
8427 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0);
8428 break;
8429 case 4: /* ret5 */
8430 insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1);
8431 break;
8432 case 1: /* jral5 */
8433 insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0);
8434 break;
8435 case 2: /* ex9.it imm5 */
8436 /* ex9.it had no 32-bit variantl. */
8437 break;
8438 case 5: /* add5.pc */
8439 /* add5.pc had no 32-bit variantl. */
8440 break;
8441 }
8442 }
8443 else /* bnes38 */
8444 insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16));
8445 goto done;
8446 case 0xe: /* lwi37/swi37 */
8447 if (insn16 & (1 << 7)) /* swi37.sp */
8448 insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
8449 else /* lwi37.sp */
8450 insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16));
8451 goto done;
8452 }
8453
8454 done:
8455 if (insn & 0x80000000)
8456 return 0;
8457
8458 if (pinsn)
8459 *pinsn = insn;
8460 return 1;
8461 }
8462 \f
8463
8464 static bfd_boolean
8465 is_sda_access_insn (unsigned long insn)
8466 {
8467 switch (N32_OP6 (insn))
8468 {
8469 case N32_OP6_LWI:
8470 case N32_OP6_LHI:
8471 case N32_OP6_LHSI:
8472 case N32_OP6_LBI:
8473 case N32_OP6_LBSI:
8474 case N32_OP6_SWI:
8475 case N32_OP6_SHI:
8476 case N32_OP6_SBI:
8477 case N32_OP6_LWC:
8478 case N32_OP6_LDC:
8479 case N32_OP6_SWC:
8480 case N32_OP6_SDC:
8481 return TRUE;
8482 default:
8483 ;
8484 }
8485 return FALSE;
8486 }
8487
8488 static unsigned long
8489 turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn)
8490 {
8491 uint32_t oinsn = 0;
8492
8493 switch (type)
8494 {
8495 case R_NDS32_GOT_LO12:
8496 case R_NDS32_GOTOFF_LO12:
8497 case R_NDS32_PLTREL_LO12:
8498 case R_NDS32_PLT_GOTREL_LO12:
8499 case R_NDS32_LO12S0_RELA:
8500 switch (N32_OP6 (insn))
8501 {
8502 case N32_OP6_LBI:
8503 /* lbi.gp */
8504 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0);
8505 break;
8506 case N32_OP6_LBSI:
8507 /* lbsi.gp */
8508 oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), N32_BIT (19));
8509 break;
8510 case N32_OP6_SBI:
8511 /* sbi.gp */
8512 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0);
8513 break;
8514 case N32_OP6_ORI:
8515 /* addi.gp */
8516 oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19));
8517 break;
8518 }
8519 break;
8520
8521 case R_NDS32_LO12S1_RELA:
8522 switch (N32_OP6 (insn))
8523 {
8524 case N32_OP6_LHI:
8525 /* lhi.gp */
8526 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0);
8527 break;
8528 case N32_OP6_LHSI:
8529 /* lhsi.gp */
8530 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (18));
8531 break;
8532 case N32_OP6_SHI:
8533 /* shi.gp */
8534 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (19));
8535 break;
8536 }
8537 break;
8538
8539 case R_NDS32_LO12S2_RELA:
8540 switch (N32_OP6 (insn))
8541 {
8542 case N32_OP6_LWI:
8543 /* lwi.gp */
8544 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3));
8545 break;
8546 case N32_OP6_SWI:
8547 /* swi.gp */
8548 oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3));
8549 break;
8550 }
8551 break;
8552
8553 case R_NDS32_LO12S2_DP_RELA:
8554 case R_NDS32_LO12S2_SP_RELA:
8555 oinsn = (insn & 0x7ff07000) | (REG_GP << 15);
8556 break;
8557 }
8558
8559 if (oinsn)
8560 *pinsn = oinsn;
8561
8562 return oinsn != 0;
8563 }
8564
8565 /* Linker hasn't found the correct merge section for non-section symbol
8566 in relax time, this work is left to the function elf_link_input_bfd().
8567 So for non-section symbol, _bfd_merged_section_offset is also needed
8568 to find the correct symbol address. */
8569
8570 static bfd_vma
8571 nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym,
8572 asection **psec, Elf_Internal_Rela *rel)
8573 {
8574 asection *sec = *psec;
8575 bfd_vma relocation;
8576
8577 relocation = (sec->output_section->vma
8578 + sec->output_offset + sym->st_value);
8579 if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
8580 {
8581 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
8582 rel->r_addend =
8583 _bfd_merged_section_offset (abfd, psec,
8584 elf_section_data (sec)->sec_info,
8585 sym->st_value + rel->r_addend);
8586 else
8587 rel->r_addend =
8588 _bfd_merged_section_offset (abfd, psec,
8589 elf_section_data (sec)->sec_info,
8590 sym->st_value) + rel->r_addend;
8591
8592 if (sec != *psec)
8593 {
8594 /* If we have changed the section, and our original section is
8595 marked with SEC_EXCLUDE, it means that the original
8596 SEC_MERGE section has been completely subsumed in some
8597 other SEC_MERGE section. In this case, we need to leave
8598 some info around for --emit-relocs. */
8599 if ((sec->flags & SEC_EXCLUDE) != 0)
8600 sec->kept_section = *psec;
8601 sec = *psec;
8602 }
8603 rel->r_addend -= relocation;
8604 rel->r_addend += sec->output_section->vma + sec->output_offset;
8605 }
8606 return relocation;
8607 }
8608
8609 static bfd_vma
8610 calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel,
8611 Elf_Internal_Sym *isymbuf,
8612 Elf_Internal_Shdr *symtab_hdr)
8613 {
8614 bfd_signed_vma foff;
8615 bfd_vma symval, addend;
8616 Elf_Internal_Rela irel_fn;
8617 Elf_Internal_Sym *isym;
8618 asection *sym_sec;
8619
8620 /* Get the value of the symbol referred to by the reloc. */
8621 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
8622 {
8623 /* A local symbol. */
8624 isym = isymbuf + ELF32_R_SYM (irel->r_info);
8625
8626 if (isym->st_shndx == SHN_UNDEF)
8627 sym_sec = bfd_und_section_ptr;
8628 else if (isym->st_shndx == SHN_ABS)
8629 sym_sec = bfd_abs_section_ptr;
8630 else if (isym->st_shndx == SHN_COMMON)
8631 sym_sec = bfd_com_section_ptr;
8632 else
8633 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
8634 memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela));
8635 symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn);
8636 addend = irel_fn.r_addend;
8637 }
8638 else
8639 {
8640 unsigned long indx;
8641 struct elf_link_hash_entry *h;
8642
8643 /* An external symbol. */
8644 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
8645 h = elf_sym_hashes (abfd)[indx];
8646 BFD_ASSERT (h != NULL);
8647
8648 while (h->root.type == bfd_link_hash_indirect
8649 || h->root.type == bfd_link_hash_warning)
8650 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8651
8652 if (h->root.type != bfd_link_hash_defined
8653 && h->root.type != bfd_link_hash_defweak)
8654 /* This appears to be a reference to an undefined
8655 symbol. Just ignore it--it will be caught by the
8656 regular reloc processing. */
8657 return 0;
8658
8659 if (h->root.u.def.section->flags & SEC_MERGE)
8660 {
8661 sym_sec = h->root.u.def.section;
8662 symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data
8663 (sym_sec)->sec_info, h->root.u.def.value);
8664 symval = symval + sym_sec->output_section->vma
8665 + sym_sec->output_offset;
8666 }
8667 else
8668 symval = (h->root.u.def.value
8669 + h->root.u.def.section->output_section->vma
8670 + h->root.u.def.section->output_offset);
8671 addend = irel->r_addend;
8672 }
8673
8674 foff = symval + addend;
8675
8676 return foff;
8677 }
8678
8679 static int
8680 is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED,
8681 asection *sec, Elf_Internal_Rela *rel)
8682 {
8683 bfd_byte *contents;
8684 unsigned short insn16;
8685
8686 if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG))
8687 return FALSE;
8688 contents = elf_section_data (sec)->this_hdr.contents;
8689 insn16 = bfd_getb16 (contents + rel->r_offset);
8690 if (insn16 == NDS32_NOP16)
8691 return TRUE;
8692 return FALSE;
8693 }
8694
8695 /* It checks whether the instruction could be converted to
8696 16-bit form and returns the converted one.
8697
8698 `internal_relocs' is supposed to be sorted. */
8699
8700 static int
8701 is_convert_32_to_16 (bfd *abfd, asection *sec,
8702 Elf_Internal_Rela *reloc,
8703 Elf_Internal_Rela *internal_relocs,
8704 Elf_Internal_Rela *irelend,
8705 uint16_t *insn16)
8706 {
8707 #define NORMAL_32_TO_16 (1 << 0)
8708 #define SPECIAL_32_TO_16 (1 << 1)
8709 bfd_byte *contents = NULL;
8710 bfd_signed_vma off;
8711 bfd_vma mem_addr;
8712 uint32_t insn = 0;
8713 Elf_Internal_Rela *pc_rel;
8714 Elf_Internal_Shdr *symtab_hdr;
8715 Elf_Internal_Sym *isymbuf = NULL;
8716 int convert_type;
8717 bfd_vma offset;
8718
8719 if (reloc->r_offset + 4 > sec->size)
8720 return FALSE;
8721
8722 offset = reloc->r_offset;
8723
8724 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE))
8725 return FALSE;
8726 insn = bfd_getb32 (contents + offset);
8727
8728 if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL))
8729 convert_type = NORMAL_32_TO_16;
8730 else if (special_convert_32_to_16 (insn, insn16, reloc))
8731 convert_type = SPECIAL_32_TO_16;
8732 else
8733 return FALSE;
8734
8735 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
8736 if (!nds32_get_local_syms (abfd, sec, &isymbuf))
8737 return FALSE;
8738
8739 /* Find the first relocation of the same relocation-type,
8740 so we iteratie them forward. */
8741 pc_rel = reloc;
8742 while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset)
8743 pc_rel--;
8744
8745 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8746 {
8747 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8748 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8749 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA
8750 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8751 {
8752 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr);
8753 if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1
8754 || off == 0)
8755 return FALSE;
8756 break;
8757 }
8758 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8759 {
8760 /* movi => movi55 */
8761 mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf,
8762 symtab_hdr);
8763 /* mem_addr is unsigned, but the value should
8764 be between [-16, 15]. */
8765 if ((mem_addr + 0x10) >> 5)
8766 return FALSE;
8767 break;
8768 }
8769 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20)
8770 || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12))
8771 {
8772 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
8773 because it can be relaxed to addi for TLS_LE_ADD. */
8774 return FALSE;
8775 }
8776 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8777 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8778 && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG)
8779 && convert_type == SPECIAL_32_TO_16)
8780 {
8781 /* fp-as-gp
8782 We've selected a best fp-base for this access, so we can
8783 always resolve it anyway. Do nothing. */
8784 break;
8785 }
8786 else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE
8787 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT))
8788 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY)
8789 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16))
8790 || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE)
8791 && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA)))
8792 {
8793 /* Prevent unresolved addi instruction translate
8794 to addi45 or addi333. */
8795 return FALSE;
8796 }
8797 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8798 {
8799 off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr);
8800 if (off >= ACCURATE_U9BIT_S1 || off <= 0)
8801 return FALSE;
8802 break;
8803 }
8804 }
8805
8806 return TRUE;
8807 }
8808
8809 static void
8810 nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents,
8811 Elf_Internal_Rela *reloc,
8812 Elf_Internal_Rela *internal_relocs,
8813 Elf_Internal_Rela *irelend,
8814 unsigned short insn16)
8815 {
8816 Elf_Internal_Rela *pc_rel;
8817 bfd_vma offset;
8818
8819 offset = reloc->r_offset;
8820 bfd_putb16 (insn16, contents + offset);
8821 /* Find the first relocation of the same relocation-type,
8822 so we iteratie them forward. */
8823 pc_rel = reloc;
8824 while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset)
8825 pc_rel--;
8826
8827 for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++)
8828 {
8829 if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA
8830 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA
8831 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA)
8832 {
8833 pc_rel->r_info =
8834 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA);
8835 }
8836 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL)
8837 pc_rel->r_info =
8838 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL);
8839 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA)
8840 pc_rel->r_info =
8841 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA);
8842 else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA
8843 || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA)
8844 pc_rel->r_info =
8845 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA);
8846 else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA))
8847 pc_rel->r_info =
8848 ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA);
8849 }
8850 }
8851
8852 /* Find a relocation of type specified by `reloc_type'
8853 of the same r_offset with reloc.
8854 If not found, return irelend.
8855
8856 Assuming relocations are sorted by r_offset,
8857 we find the relocation from `reloc' backward untill relocs,
8858 or find it from `reloc' forward untill irelend. */
8859
8860 static Elf_Internal_Rela *
8861 find_relocs_at_address (Elf_Internal_Rela *reloc,
8862 Elf_Internal_Rela *relocs,
8863 Elf_Internal_Rela *irelend,
8864 enum elf_nds32_reloc_type reloc_type)
8865 {
8866 Elf_Internal_Rela *rel_t;
8867
8868 /* Find backward. */
8869 for (rel_t = reloc;
8870 rel_t >= relocs && rel_t->r_offset == reloc->r_offset;
8871 rel_t--)
8872 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8873 return rel_t;
8874
8875 /* We didn't find it backward. Try find it forward. */
8876 for (rel_t = reloc;
8877 rel_t < irelend && rel_t->r_offset == reloc->r_offset;
8878 rel_t++)
8879 if (ELF32_R_TYPE (rel_t->r_info) == reloc_type)
8880 return rel_t;
8881
8882 return irelend;
8883 }
8884
8885 /* Find a relocation of specified type and offset.
8886 `reloc' is just a refence point to find a relocation at specified offset.
8887 If not found, return irelend.
8888
8889 Assuming relocations are sorted by r_offset,
8890 we find the relocation from `reloc' backward untill relocs,
8891 or find it from `reloc' forward untill irelend. */
8892
8893 static Elf_Internal_Rela *
8894 find_relocs_at_address_addr (Elf_Internal_Rela *reloc,
8895 Elf_Internal_Rela *relocs,
8896 Elf_Internal_Rela *irelend,
8897 enum elf_nds32_reloc_type reloc_type,
8898 bfd_vma offset_p)
8899 {
8900 Elf_Internal_Rela *rel_t = NULL;
8901
8902 /* First, we try to find a relocation of offset `offset_p',
8903 and then we use find_relocs_at_address to find specific type. */
8904
8905 if (reloc->r_offset > offset_p)
8906 {
8907 /* Find backward. */
8908 for (rel_t = reloc;
8909 rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--)
8910 /* Do nothing. */;
8911 }
8912 else if (reloc->r_offset < offset_p)
8913 {
8914 /* Find forward. */
8915 for (rel_t = reloc;
8916 rel_t < irelend && rel_t->r_offset < offset_p; rel_t++)
8917 /* Do nothing. */;
8918 }
8919 else
8920 rel_t = reloc;
8921
8922 /* Not found? */
8923 if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p)
8924 return irelend;
8925
8926 return find_relocs_at_address (rel_t, relocs, irelend, reloc_type);
8927 }
8928
8929 typedef struct nds32_elf_blank nds32_elf_blank_t;
8930 struct nds32_elf_blank
8931 {
8932 /* Where the blank begins. */
8933 bfd_vma offset;
8934 /* The size of the blank. */
8935 bfd_vma size;
8936 /* The accumulative size before this blank. */
8937 bfd_vma total_size;
8938 nds32_elf_blank_t *next;
8939 nds32_elf_blank_t *prev;
8940 };
8941
8942 static nds32_elf_blank_t *blank_free_list = NULL;
8943
8944 static nds32_elf_blank_t *
8945 create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p)
8946 {
8947 nds32_elf_blank_t *blank_t;
8948
8949 if (blank_free_list)
8950 {
8951 blank_t = blank_free_list;
8952 blank_free_list = blank_free_list->next;
8953 }
8954 else
8955 blank_t = bfd_malloc (sizeof (nds32_elf_blank_t));
8956
8957 if (blank_t == NULL)
8958 return NULL;
8959
8960 blank_t->offset = offset_p;
8961 blank_t->size = size_p;
8962 blank_t->total_size = 0;
8963 blank_t->next = NULL;
8964 blank_t->prev = NULL;
8965
8966 return blank_t;
8967 }
8968
8969 static void
8970 remove_nds32_elf_blank (nds32_elf_blank_t *blank_p)
8971 {
8972 if (blank_free_list)
8973 {
8974 blank_free_list->prev = blank_p;
8975 blank_p->next = blank_free_list;
8976 }
8977 else
8978 blank_p->next = NULL;
8979
8980 blank_p->prev = NULL;
8981 blank_free_list = blank_p;
8982 }
8983
8984 static void
8985 clean_nds32_elf_blank (void)
8986 {
8987 nds32_elf_blank_t *blank_t;
8988
8989 while (blank_free_list)
8990 {
8991 blank_t = blank_free_list;
8992 blank_free_list = blank_free_list->next;
8993 free (blank_t);
8994 }
8995 }
8996
8997 static nds32_elf_blank_t *
8998 search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr)
8999 {
9000 nds32_elf_blank_t *blank_t;
9001
9002 if (!blank_p)
9003 return NULL;
9004 blank_t = blank_p;
9005
9006 while (blank_t && addr < blank_t->offset)
9007 blank_t = blank_t->prev;
9008 while (blank_t && blank_t->next && addr >= blank_t->next->offset)
9009 blank_t = blank_t->next;
9010
9011 return blank_t;
9012 }
9013
9014 static bfd_vma
9015 get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
9016 int overwrite)
9017 {
9018 nds32_elf_blank_t *blank_t;
9019
9020 blank_t = search_nds32_elf_blank (*blank_p, addr);
9021 if (!blank_t)
9022 return 0;
9023
9024 if (overwrite)
9025 *blank_p = blank_t;
9026
9027 if (addr < blank_t->offset + blank_t->size)
9028 return blank_t->total_size + (addr - blank_t->offset);
9029 else
9030 return blank_t->total_size + blank_t->size;
9031 }
9032
9033 static bfd_boolean
9034 insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len)
9035 {
9036 nds32_elf_blank_t *blank_t, *blank_t2;
9037
9038 if (!*blank_p)
9039 {
9040 *blank_p = create_nds32_elf_blank (addr, len);
9041 return *blank_p ? TRUE : FALSE;
9042 }
9043
9044 blank_t = search_nds32_elf_blank (*blank_p, addr);
9045
9046 if (blank_t == NULL)
9047 {
9048 blank_t = create_nds32_elf_blank (addr, len);
9049 if (!blank_t)
9050 return FALSE;
9051 while ((*blank_p)->prev != NULL)
9052 *blank_p = (*blank_p)->prev;
9053 blank_t->next = *blank_p;
9054 (*blank_p)->prev = blank_t;
9055 (*blank_p) = blank_t;
9056 return TRUE;
9057 }
9058
9059 if (addr < blank_t->offset + blank_t->size)
9060 {
9061 /* Extend the origin blank. */
9062 if (addr + len > blank_t->offset + blank_t->size)
9063 blank_t->size = addr + len - blank_t->offset;
9064 }
9065 else
9066 {
9067 blank_t2 = create_nds32_elf_blank (addr, len);
9068 if (!blank_t2)
9069 return FALSE;
9070 if (blank_t->next)
9071 {
9072 blank_t->next->prev = blank_t2;
9073 blank_t2->next = blank_t->next;
9074 }
9075 blank_t2->prev = blank_t;
9076 blank_t->next = blank_t2;
9077 *blank_p = blank_t2;
9078 }
9079
9080 return TRUE;
9081 }
9082
9083 static bfd_boolean
9084 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr,
9085 bfd_vma len)
9086 {
9087 nds32_elf_blank_t *blank_t;
9088
9089 if (!insert_nds32_elf_blank (blank_p, addr, len))
9090 return FALSE;
9091
9092 blank_t = *blank_p;
9093
9094 if (!blank_t->prev)
9095 {
9096 blank_t->total_size = 0;
9097 blank_t = blank_t->next;
9098 }
9099
9100 while (blank_t)
9101 {
9102 blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size;
9103 blank_t = blank_t->next;
9104 }
9105
9106 return TRUE;
9107 }
9108
9109 static void
9110 calc_nds32_blank_total (nds32_elf_blank_t *blank_p)
9111 {
9112 nds32_elf_blank_t *blank_t;
9113 bfd_vma total_size = 0;
9114
9115 if (!blank_p)
9116 return;
9117
9118 blank_t = blank_p;
9119 while (blank_t->prev)
9120 blank_t = blank_t->prev;
9121 while (blank_t)
9122 {
9123 blank_t->total_size = total_size;
9124 total_size += blank_t->size;
9125 blank_t = blank_t->next;
9126 }
9127 }
9128
9129 static bfd_boolean
9130 nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec,
9131 nds32_elf_blank_t *blank_p)
9132 {
9133 Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */
9134 Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */
9135 Elf_Internal_Sym *isymend; /* Symbol entry iterator. */
9136 unsigned int sec_shndx; /* The section the be relaxed. */
9137 bfd_byte *contents; /* Contents data of iterating section. */
9138 Elf_Internal_Rela *internal_relocs;
9139 Elf_Internal_Rela *irel;
9140 Elf_Internal_Rela *irelend;
9141 struct elf_link_hash_entry **sym_hashes;
9142 struct elf_link_hash_entry **end_hashes;
9143 unsigned int symcount;
9144 asection *sect;
9145 nds32_elf_blank_t *blank_t;
9146 nds32_elf_blank_t *blank_t2;
9147 nds32_elf_blank_t *blank_head;
9148
9149 blank_head = blank_t = blank_p;
9150 while (blank_head->prev != NULL)
9151 blank_head = blank_head->prev;
9152 while (blank_t->next != NULL)
9153 blank_t = blank_t->next;
9154
9155 if (blank_t->offset + blank_t->size <= sec->size)
9156 {
9157 blank_t->next = create_nds32_elf_blank (sec->size + 4, 0);
9158 blank_t->next->prev = blank_t;
9159 }
9160 if (blank_head->offset > 0)
9161 {
9162 blank_head->prev = create_nds32_elf_blank (0, 0);
9163 blank_head->prev->next = blank_head;
9164 blank_head = blank_head->prev;
9165 }
9166
9167 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
9168
9169 /* The deletion must stop at the next ALIGN reloc for an alignment
9170 power larger than the number of bytes we are deleting. */
9171
9172 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9173 if (!nds32_get_local_syms (abfd, sec, &isym))
9174 return FALSE;
9175
9176 if (isym == NULL)
9177 {
9178 isym = bfd_elf_get_elf_syms (abfd, symtab_hdr,
9179 symtab_hdr->sh_info, 0, NULL, NULL, NULL);
9180 symtab_hdr->contents = (bfd_byte *) isym;
9181 }
9182
9183 if (isym == NULL || symtab_hdr->sh_info == 0)
9184 return FALSE;
9185
9186 blank_t = blank_head;
9187 calc_nds32_blank_total (blank_head);
9188
9189 for (sect = abfd->sections; sect != NULL; sect = sect->next)
9190 {
9191 /* Adjust all the relocs. */
9192
9193 /* Relocations MUST be kept in memory, because relaxation adjust them. */
9194 internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL,
9195 TRUE /* keep_memory */);
9196 irelend = internal_relocs + sect->reloc_count;
9197
9198 blank_t = blank_head;
9199 blank_t2 = blank_head;
9200
9201 if (!(sect->flags & SEC_RELOC))
9202 continue;
9203
9204 nds32_get_section_contents (abfd, sect, &contents, TRUE);
9205
9206 for (irel = internal_relocs; irel < irelend; irel++)
9207 {
9208 bfd_vma raddr;
9209
9210 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8
9211 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32
9212 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
9213 {
9214 unsigned long val = 0;
9215 unsigned long mask;
9216 long before, between;
9217 long offset = 0;
9218
9219 switch (ELF32_R_TYPE (irel->r_info))
9220 {
9221 case R_NDS32_DIFF8:
9222 offset = bfd_get_8 (abfd, contents + irel->r_offset);
9223 break;
9224 case R_NDS32_DIFF16:
9225 offset = bfd_get_16 (abfd, contents + irel->r_offset);
9226 break;
9227 case R_NDS32_DIFF32:
9228 val = bfd_get_32 (abfd, contents + irel->r_offset);
9229 /* Get the signed bit and mask for the high part. The
9230 gcc will alarm when right shift 32-bit since the
9231 type size of long may be 32-bit. */
9232 mask = 0 - (val >> 31);
9233 if (mask)
9234 offset = (val | (mask - 0xffffffff));
9235 else
9236 offset = val;
9237 break;
9238 default:
9239 BFD_ASSERT (0);
9240 }
9241
9242 /* DIFF value
9243 0 |encoded in location|
9244 |------------|-------------------|---------
9245 sym+off(addend)
9246 -- before ---| *****************
9247 --------------------- between ---|
9248
9249 We only care how much data are relax between DIFF,
9250 marked as ***. */
9251
9252 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
9253 between = get_nds32_elf_blank_total (&blank_t,
9254 irel->r_addend + offset, 0);
9255 if (between == before)
9256 goto done_adjust_diff;
9257
9258 switch (ELF32_R_TYPE (irel->r_info))
9259 {
9260 case R_NDS32_DIFF8:
9261 bfd_put_8 (abfd, offset - (between - before),
9262 contents + irel->r_offset);
9263 break;
9264 case R_NDS32_DIFF16:
9265 bfd_put_16 (abfd, offset - (between - before),
9266 contents + irel->r_offset);
9267 break;
9268 case R_NDS32_DIFF32:
9269 bfd_put_32 (abfd, offset - (between - before),
9270 contents + irel->r_offset);
9271 break;
9272 }
9273 }
9274 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128
9275 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx)
9276 {
9277 bfd_vma val = 0;
9278 unsigned int len = 0;
9279 unsigned long before, between;
9280 bfd_byte *endp, *p;
9281
9282 val = _bfd_read_unsigned_leb128 (abfd, contents + irel->r_offset,
9283 &len);
9284
9285 before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0);
9286 between = get_nds32_elf_blank_total (&blank_t,
9287 irel->r_addend + val, 0);
9288 if (between == before)
9289 goto done_adjust_diff;
9290
9291 p = contents + irel->r_offset;
9292 endp = p + len -1;
9293 memset (p, 0x80, len);
9294 *(endp) = 0;
9295 p = write_uleb128 (p, val - (between - before)) - 1;
9296 if (p < endp)
9297 *p |= 0x80;
9298 }
9299 done_adjust_diff:
9300
9301 if (sec == sect)
9302 {
9303 raddr = irel->r_offset;
9304 irel->r_offset -= get_nds32_elf_blank_total (&blank_t2,
9305 irel->r_offset, 1);
9306
9307 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE)
9308 continue;
9309 if (blank_t2 && blank_t2->next
9310 && (blank_t2->offset > raddr
9311 || blank_t2->next->offset <= raddr))
9312 _bfd_error_handler
9313 (_("%pB: error: search_nds32_elf_blank reports wrong node"),
9314 abfd);
9315
9316 /* Mark reloc in deleted portion as NONE.
9317 For some relocs like R_NDS32_LABEL that doesn't modify the
9318 content in the section. R_NDS32_LABEL doesn't belong to the
9319 instruction in the section, so we should preserve it. */
9320 if (raddr >= blank_t2->offset
9321 && raddr < blank_t2->offset + blank_t2->size
9322 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL
9323 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN
9324 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END
9325 && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY
9326 && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND
9327 && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND)
9328 {
9329 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
9330 R_NDS32_NONE);
9331 continue;
9332 }
9333 }
9334
9335 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE
9336 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
9337 || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
9338 continue;
9339
9340 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info
9341 && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx
9342 && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION)
9343 {
9344 if (irel->r_addend <= sec->size)
9345 irel->r_addend -=
9346 get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1);
9347 }
9348 }
9349 }
9350
9351 /* Adjust the local symbols defined in this section. */
9352 blank_t = blank_head;
9353 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
9354 {
9355 if (isym->st_shndx == sec_shndx)
9356 {
9357 if (isym->st_value <= sec->size)
9358 {
9359 bfd_vma ahead;
9360 bfd_vma orig_addr = isym->st_value;
9361
9362 ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1);
9363 isym->st_value -= ahead;
9364
9365 /* Adjust function size. */
9366 if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC
9367 && isym->st_size > 0)
9368 isym->st_size -=
9369 get_nds32_elf_blank_total
9370 (&blank_t, orig_addr + isym->st_size, 0) - ahead;
9371 }
9372 }
9373 }
9374
9375 /* Now adjust the global symbols defined in this section. */
9376 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
9377 - symtab_hdr->sh_info);
9378 sym_hashes = elf_sym_hashes (abfd);
9379 end_hashes = sym_hashes + symcount;
9380 blank_t = blank_head;
9381 for (; sym_hashes < end_hashes; sym_hashes++)
9382 {
9383 struct elf_link_hash_entry *sym_hash = *sym_hashes;
9384
9385 if ((sym_hash->root.type == bfd_link_hash_defined
9386 || sym_hash->root.type == bfd_link_hash_defweak)
9387 && sym_hash->root.u.def.section == sec)
9388 {
9389 if (sym_hash->root.u.def.value <= sec->size)
9390 {
9391 bfd_vma ahead;
9392 bfd_vma orig_addr = sym_hash->root.u.def.value;
9393
9394 ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1);
9395 sym_hash->root.u.def.value -= ahead;
9396
9397 /* Adjust function size. */
9398 if (sym_hash->type == STT_FUNC)
9399 sym_hash->size -=
9400 get_nds32_elf_blank_total
9401 (&blank_t, orig_addr + sym_hash->size, 0) - ahead;
9402
9403 }
9404 }
9405 }
9406
9407 contents = elf_section_data (sec)->this_hdr.contents;
9408 blank_t = blank_head;
9409 while (blank_t->next)
9410 {
9411 /* Actually delete the bytes. */
9412
9413 /* If current blank is the last blank overlap with current section,
9414 go to finish process. */
9415 if (sec->size <= (blank_t->next->offset))
9416 break;
9417
9418 memmove (contents + blank_t->offset - blank_t->total_size,
9419 contents + blank_t->offset + blank_t->size,
9420 blank_t->next->offset - (blank_t->offset + blank_t->size));
9421
9422 blank_t = blank_t->next;
9423 }
9424
9425 if (sec->size > (blank_t->offset + blank_t->size))
9426 {
9427 /* There are remaining code between blank and section boundary.
9428 Move the remaining code to appropriate location. */
9429 memmove (contents + blank_t->offset - blank_t->total_size,
9430 contents + blank_t->offset + blank_t->size,
9431 sec->size - (blank_t->offset + blank_t->size));
9432 sec->size -= blank_t->total_size + blank_t->size;
9433 }
9434 else
9435 /* This blank is not entirely included in the section,
9436 reduce the section size by only part of the blank size. */
9437 sec->size -= blank_t->total_size + (sec->size - blank_t->offset);
9438
9439 while (blank_head)
9440 {
9441 blank_t = blank_head;
9442 blank_head = blank_head->next;
9443 remove_nds32_elf_blank (blank_t);
9444 }
9445
9446 return TRUE;
9447 }
9448
9449 /* Get the contents of a section. */
9450
9451 static int
9452 nds32_get_section_contents (bfd *abfd, asection *sec,
9453 bfd_byte **contents_p, bfd_boolean cache)
9454 {
9455 /* Get the section contents. */
9456 if (elf_section_data (sec)->this_hdr.contents != NULL)
9457 *contents_p = elf_section_data (sec)->this_hdr.contents;
9458 else
9459 {
9460 if (!bfd_malloc_and_get_section (abfd, sec, contents_p))
9461 return FALSE;
9462 if (cache)
9463 elf_section_data (sec)->this_hdr.contents = *contents_p;
9464 }
9465
9466 return TRUE;
9467 }
9468
9469 /* Get the contents of the internal symbol of abfd. */
9470
9471 static int
9472 nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED,
9473 Elf_Internal_Sym **isymbuf_p)
9474 {
9475 Elf_Internal_Shdr *symtab_hdr;
9476 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9477
9478 /* Read this BFD's local symbols if we haven't done so already. */
9479 if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0)
9480 {
9481 *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents;
9482 if (*isymbuf_p == NULL)
9483 {
9484 *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr,
9485 symtab_hdr->sh_info, 0,
9486 NULL, NULL, NULL);
9487 if (*isymbuf_p == NULL)
9488 return FALSE;
9489 }
9490 }
9491 symtab_hdr->contents = (bfd_byte *) (*isymbuf_p);
9492
9493 return TRUE;
9494 }
9495
9496 /* Range of small data. */
9497 static bfd_vma sdata_range[2][2];
9498 static bfd_vma const sdata_init_range[2] =
9499 { ACCURATE_12BIT_S1, ACCURATE_19BIT };
9500
9501 static int
9502 nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED,
9503 bfd_byte *contents, bfd_vma addr)
9504 {
9505 unsigned long insn = bfd_getb32 (contents + addr);
9506
9507 if (insn & 0x80000000)
9508 return 2;
9509
9510 return 4;
9511 }
9512
9513 /* Set the gp relax range. We have to measure the safe range
9514 to do gp relaxation. */
9515
9516 static void
9517 relax_range_measurement (bfd *abfd)
9518 {
9519 asection *sec_f, *sec_b;
9520 /* For upper bound. */
9521 bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize;
9522 bfd_vma align;
9523 static int decide_relax_range = 0;
9524 int i;
9525 int range_number = ARRAY_SIZE (sdata_init_range);
9526
9527 if (decide_relax_range)
9528 return;
9529 decide_relax_range = 1;
9530
9531 if (sda_rela_sec == NULL)
9532 {
9533 /* Since there is no data sections, we assume the range is page size. */
9534 for (i = 0; i < range_number; i++)
9535 {
9536 sdata_range[i][0] = sdata_init_range[i] - 0x1000;
9537 sdata_range[i][1] = sdata_init_range[i] - 0x1000;
9538 }
9539 return;
9540 }
9541
9542 /* Get the biggest alignment power after the gp located section. */
9543 sec_f = sda_rela_sec->output_section;
9544 sec_b = sec_f->next;
9545 align = 0;
9546 while (sec_b != NULL)
9547 {
9548 if ((unsigned)(1 << sec_b->alignment_power) > align)
9549 align = (1 << sec_b->alignment_power);
9550 sec_b = sec_b->next;
9551 }
9552
9553 /* I guess we can not determine the section before
9554 gp located section, so we assume the align is max page size. */
9555 for (i = 0; i < range_number; i++)
9556 {
9557 sdata_range[i][1] = sdata_init_range[i] - align;
9558 BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]);
9559 sdata_range[i][0] = sdata_init_range[i] - maxpgsz;
9560 BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]);
9561 }
9562 }
9563
9564 /* These are macros used to check flags encoded in r_addend.
9565 They are only used by nds32_elf_relax_section (). */
9566 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
9567 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
9568 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
9569 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
9570
9571 static const char * unrecognized_reloc_msg =
9572 /* xgettext:c-format */
9573 N_("%pB: warning: %s points to unrecognized reloc at %#" PRIx64);
9574
9575 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
9576
9577 static bfd_boolean
9578 nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9579 Elf_Internal_Rela *internal_relocs, int *insn_len,
9580 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9581 Elf_Internal_Shdr *symtab_hdr)
9582 {
9583 /* There are 3 variations for LONGCALL1
9584 case 4-4-2; 16-bit on, optimize off or optimize for space
9585 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9586 ori ta, ta, lo12(symbol) ; LO12S0
9587 jral5 ta ;
9588
9589 case 4-4-4; 16-bit off, optimize don't care
9590 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9591 ori ta, ta, lo12(symbol) ; LO12S0
9592 jral ta ;
9593
9594 case 4-4-4; 16-bit on, optimize for speed
9595 sethi ta, hi20(symbol) ; LONGCALL1/HI20
9596 ori ta, ta, lo12(symbol) ; LO12S0
9597 jral ta ;
9598 Check code for -mlong-calls output. */
9599
9600 /* Get the reloc for the address from which the register is
9601 being loaded. This reloc will tell us which function is
9602 actually being called. */
9603
9604 bfd_vma laddr;
9605 int seq_len; /* Original length of instruction sequence. */
9606 uint32_t insn;
9607 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9608 bfd_signed_vma foff;
9609 uint16_t insn16;
9610
9611 irelend = internal_relocs + sec->reloc_count;
9612 seq_len = GET_SEQ_LEN (irel->r_addend);
9613 laddr = irel->r_offset;
9614 *insn_len = seq_len;
9615
9616 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9617 R_NDS32_HI20_RELA, laddr);
9618 lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
9619 R_NDS32_LO12S0_ORI_RELA,
9620 laddr + 4);
9621
9622 if (hi_irelfn == irelend || lo_irelfn == irelend)
9623 {
9624 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL1",
9625 (uint64_t) irel->r_offset);
9626 return FALSE;
9627 }
9628
9629 /* Get the value of the symbol referred to by the reloc. */
9630 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr);
9631
9632 /* This condition only happened when symbol is undefined. */
9633 if (foff == 0
9634 || foff < -CONSERVATIVE_24BIT_S1
9635 || foff >= CONSERVATIVE_24BIT_S1)
9636 return FALSE;
9637
9638 /* Relax to: jal symbol; 25_PCREL. */
9639 /* For simplicity of coding, we are going to modify the section
9640 contents, the section relocs, and the BFD symbol table. We
9641 must tell the rest of the code not to free up this
9642 information. It would be possible to instead create a table
9643 of changes which have to be made, as is done in coff-mips.c;
9644 that would be more work, but would require less memory when
9645 the linker is run. */
9646
9647 /* Replace the long call with a jal. */
9648 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9649 R_NDS32_25_PCREL_RELA);
9650 irel->r_addend = hi_irelfn->r_addend;
9651
9652 /* We don't resolve this here but resolve it in relocate_section. */
9653 insn = INSN_JAL;
9654 bfd_putb32 (insn, contents + irel->r_offset);
9655
9656 hi_irelfn->r_info =
9657 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9658 lo_irelfn->r_info =
9659 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9660 *insn_len = 4;
9661
9662 if (seq_len & 0x2)
9663 {
9664 insn16 = NDS32_NOP16;
9665 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9666 lo_irelfn->r_info =
9667 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9668 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9669 *insn_len += 2;
9670 }
9671 return TRUE;
9672 }
9673
9674 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
9675 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
9676
9677 static bfd_boolean
9678 nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9679 Elf_Internal_Rela *internal_relocs, int *insn_len,
9680 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9681 Elf_Internal_Shdr *symtab_hdr)
9682 {
9683 /* bltz rt, .L1 ; LONGCALL2
9684 jal symbol ; 25_PCREL
9685 .L1: */
9686
9687 /* Get the reloc for the address from which the register is
9688 being loaded. This reloc will tell us which function is
9689 actually being called. */
9690
9691 bfd_vma laddr;
9692 uint32_t insn;
9693 Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend;
9694 bfd_signed_vma foff;
9695
9696 irelend = internal_relocs + sec->reloc_count;
9697 laddr = irel->r_offset;
9698 i1_irelfn =
9699 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9700 R_NDS32_25_PCREL_RELA, laddr + 4);
9701
9702 if (i1_irelfn == irelend)
9703 {
9704 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL2",
9705 (uint64_t) irel->r_offset);
9706 return FALSE;
9707 }
9708
9709 insn = bfd_getb32 (contents + laddr);
9710
9711 /* Get the value of the symbol referred to by the reloc. */
9712 foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr);
9713
9714 if (foff == 0
9715 || foff < -CONSERVATIVE_16BIT_S1
9716 || foff >= CONSERVATIVE_16BIT_S1)
9717 return FALSE;
9718
9719 /* Relax to bgezal rt, label ; 17_PCREL
9720 or bltzal rt, label ; 17_PCREL */
9721
9722 /* Convert to complimentary conditional call. */
9723 insn = CONVERT_CONDITION_CALL (insn);
9724
9725 /* For simplicity of coding, we are going to modify the section
9726 contents, the section relocs, and the BFD symbol table. We
9727 must tell the rest of the code not to free up this
9728 information. It would be possible to instead create a table
9729 of changes which have to be made, as is done in coff-mips.c;
9730 that would be more work, but would require less memory when
9731 the linker is run. */
9732
9733 /* Clean unnessary relocations. */
9734 i1_irelfn->r_info =
9735 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE);
9736 cond_irelfn =
9737 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9738 R_NDS32_17_PCREL_RELA, laddr);
9739 if (cond_irelfn != irelend)
9740 cond_irelfn->r_info =
9741 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE);
9742
9743 /* Replace the long call with a bgezal. */
9744 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info),
9745 R_NDS32_17_PCREL_RELA);
9746 irel->r_addend = i1_irelfn->r_addend;
9747
9748 bfd_putb32 (insn, contents + irel->r_offset);
9749
9750 *insn_len = 4;
9751 return TRUE;
9752 }
9753
9754 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
9755
9756 static bfd_boolean
9757 nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9758 Elf_Internal_Rela *internal_relocs, int *insn_len,
9759 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9760 Elf_Internal_Shdr *symtab_hdr)
9761 {
9762 /* There are 3 variations for LONGCALL3
9763 case 4-4-4-2; 16-bit on, optimize off or optimize for space
9764 bltz rt, $1 ; LONGCALL3
9765 sethi ta, hi20(symbol) ; HI20
9766 ori ta, ta, lo12(symbol) ; LO12S0
9767 jral5 ta ;
9768 $1
9769
9770 case 4-4-4-4; 16-bit off, optimize don't care
9771 bltz rt, $1 ; LONGCALL3
9772 sethi ta, hi20(symbol) ; HI20
9773 ori ta, ta, lo12(symbol) ; LO12S0
9774 jral ta ;
9775 $1
9776
9777 case 4-4-4-4; 16-bit on, optimize for speed
9778 bltz rt, $1 ; LONGCALL3
9779 sethi ta, hi20(symbol) ; HI20
9780 ori ta, ta, lo12(symbol) ; LO12S0
9781 jral ta ;
9782 $1 */
9783
9784 /* Get the reloc for the address from which the register is
9785 being loaded. This reloc will tell us which function is
9786 actually being called. */
9787
9788 bfd_vma laddr;
9789 int seq_len; /* Original length of instruction sequence. */
9790 uint32_t insn;
9791 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
9792 bfd_signed_vma foff;
9793 uint16_t insn16;
9794
9795 irelend = internal_relocs + sec->reloc_count;
9796 seq_len = GET_SEQ_LEN (irel->r_addend);
9797 laddr = irel->r_offset;
9798 *insn_len = seq_len;
9799
9800 hi_irelfn =
9801 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9802 R_NDS32_HI20_RELA, laddr + 4);
9803 lo_irelfn =
9804 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9805 R_NDS32_LO12S0_ORI_RELA, laddr + 8);
9806
9807 if (hi_irelfn == irelend || lo_irelfn == irelend)
9808 {
9809 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL3",
9810 (uint64_t) irel->r_offset);
9811 return FALSE;
9812 }
9813
9814 /* Get the value of the symbol referred to by the reloc. */
9815 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr);
9816
9817 if (foff == 0
9818 || foff < -CONSERVATIVE_24BIT_S1
9819 || foff >= CONSERVATIVE_24BIT_S1)
9820 return FALSE;
9821
9822 insn = bfd_getb32 (contents + laddr);
9823 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
9824 {
9825 /* Relax to bgezal rt, label ; 17_PCREL
9826 or bltzal rt, label ; 17_PCREL */
9827
9828 /* Convert to complimentary conditional call. */
9829 insn = CONVERT_CONDITION_CALL (insn);
9830 bfd_putb32 (insn, contents + irel->r_offset);
9831
9832 *insn_len = 4;
9833 irel->r_info =
9834 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9835 hi_irelfn->r_info =
9836 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
9837 lo_irelfn->r_info =
9838 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9839
9840 cond_irelfn =
9841 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9842 R_NDS32_17_PCREL_RELA, laddr);
9843 if (cond_irelfn != irelend)
9844 {
9845 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9846 R_NDS32_17_PCREL_RELA);
9847 cond_irelfn->r_addend = hi_irelfn->r_addend;
9848 }
9849
9850 if (seq_len & 0x2)
9851 {
9852 insn16 = NDS32_NOP16;
9853 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9854 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9855 R_NDS32_INSN16);
9856 hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9857 insn_len += 2;
9858 }
9859 }
9860 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
9861 {
9862 /* Relax to the following instruction sequence
9863 bltz rt, $1 ; LONGCALL2
9864 jal symbol ; 25_PCREL
9865 $1 */
9866 *insn_len = 8;
9867 insn = INSN_JAL;
9868 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
9869
9870 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
9871 R_NDS32_25_PCREL_RELA);
9872 irel->r_info =
9873 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2);
9874
9875 lo_irelfn->r_info =
9876 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9877
9878 if (seq_len & 0x2)
9879 {
9880 insn16 = NDS32_NOP16;
9881 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9882 lo_irelfn->r_info =
9883 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16);
9884 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9885 insn_len += 2;
9886 }
9887 }
9888 return TRUE;
9889 }
9890
9891 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9892
9893 static bfd_boolean
9894 nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
9895 Elf_Internal_Rela *internal_relocs, int *insn_len,
9896 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
9897 Elf_Internal_Shdr *symtab_hdr)
9898 {
9899 /* There are 3 variations for LONGJUMP1
9900 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9901 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9902 ori ta, ta, lo12(symbol) ; LO12S0
9903 jr5 ta ;
9904
9905 case 4-4-4; 16-bit off, optimize don't care
9906 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9907 ori ta, ta, lo12(symbol) ; LO12S0
9908 jr ta ;
9909
9910 case 4-4-4; 16-bit on, optimize for speed
9911 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9912 ori ta, ta, lo12(symbol) ; LO12S0
9913 jr ta ; */
9914
9915 /* Get the reloc for the address from which the register is
9916 being loaded. This reloc will tell us which function is
9917 actually being called. */
9918
9919 bfd_vma laddr;
9920 int seq_len; /* Original length of instruction sequence. */
9921 int insn16_on; /* 16-bit on/off. */
9922 uint32_t insn;
9923 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend;
9924 bfd_signed_vma foff;
9925 uint16_t insn16;
9926 unsigned long reloc;
9927
9928 irelend = internal_relocs + sec->reloc_count;
9929 seq_len = GET_SEQ_LEN (irel->r_addend);
9930 laddr = irel->r_offset;
9931 *insn_len = seq_len;
9932 insn16_on = IS_16BIT_ON (irel->r_addend);
9933
9934 hi_irelfn =
9935 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9936 R_NDS32_HI20_RELA, laddr);
9937 lo_irelfn =
9938 find_relocs_at_address_addr (irel, internal_relocs, irelend,
9939 R_NDS32_LO12S0_ORI_RELA, laddr + 4);
9940 if (hi_irelfn == irelend || lo_irelfn == irelend)
9941 {
9942 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP1",
9943 (uint64_t) irel->r_offset);
9944 return FALSE;
9945 }
9946
9947 /* Get the value of the symbol referred to by the reloc. */
9948 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr);
9949
9950 if (foff == 0
9951 || foff >= CONSERVATIVE_24BIT_S1
9952 || foff < -CONSERVATIVE_24BIT_S1)
9953 return FALSE;
9954
9955 if (insn16_on
9956 && foff >= -ACCURATE_8BIT_S1
9957 && foff < ACCURATE_8BIT_S1
9958 && (seq_len & 0x2))
9959 {
9960 /* j8 label */
9961 /* 16-bit on, but not optimized for speed. */
9962 reloc = R_NDS32_9_PCREL_RELA;
9963 insn16 = INSN_J8;
9964 bfd_putb16 (insn16, contents + irel->r_offset);
9965 *insn_len = 2;
9966 irel->r_info =
9967 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
9968 }
9969 else
9970 {
9971 /* j label */
9972 reloc = R_NDS32_25_PCREL_RELA;
9973 insn = INSN_J;
9974 bfd_putb32 (insn, contents + irel->r_offset);
9975 *insn_len = 4;
9976 irel->r_info =
9977 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16);
9978 irel->r_addend = 0;
9979 }
9980
9981 hi_irelfn->r_info =
9982 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
9983 lo_irelfn->r_info =
9984 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE);
9985
9986 if ((seq_len & 0x2) && ((*insn_len & 2) == 0))
9987 {
9988 insn16 = NDS32_NOP16;
9989 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
9990 lo_irelfn->r_info =
9991 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
9992 R_NDS32_INSN16);
9993 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
9994 *insn_len += 2;
9995 }
9996 return TRUE;
9997 }
9998
9999 /* Revert condition branch. This function does not check if the input
10000 instruction is condition branch or not. */
10001
10002 static void
10003 nds32_elf_convert_branch (uint16_t insn16, uint32_t insn,
10004 uint16_t *re_insn16, uint32_t *re_insn)
10005 {
10006 uint32_t comp_insn = 0;
10007 uint16_t comp_insn16 = 0;
10008
10009 if (insn)
10010 {
10011 if (N32_OP6 (insn) == N32_OP6_BR1)
10012 {
10013 /* beqs label. */
10014 comp_insn = (insn ^ 0x4000) & 0xffffc000;
10015 if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5)
10016 {
10017 /* Insn can be contracted to 16-bit implied r5. */
10018 comp_insn16 =
10019 (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38;
10020 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
10021 }
10022 }
10023 else if (N32_OP6 (insn) == N32_OP6_BR3)
10024 {
10025 /* bnec $ta, imm11, label. */
10026 comp_insn = (insn ^ 0x80000) & 0xffffff00;
10027 }
10028 else
10029 {
10030 comp_insn = (insn ^ 0x10000) & 0xffffc000;
10031 if (N32_BR2_SUB (insn) == N32_BR2_BEQZ
10032 || N32_BR2_SUB (insn) == N32_BR2_BNEZ)
10033 {
10034 if (N32_IS_RT3 (insn))
10035 {
10036 /* Insn can be contracted to 16-bit. */
10037 comp_insn16 =
10038 (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38;
10039 comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8;
10040 }
10041 else if (N32_RT5 (insn) == REG_R15)
10042 {
10043 /* Insn can be contracted to 16-bit. */
10044 comp_insn16 =
10045 (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38;
10046 }
10047 }
10048 }
10049 }
10050 else
10051 {
10052 switch ((insn16 & 0xf000) >> 12)
10053 {
10054 case 0xc:
10055 /* beqz38 or bnez38 */
10056 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
10057 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ;
10058 comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20;
10059 break;
10060
10061 case 0xd:
10062 /* beqs38 or bnes38 */
10063 comp_insn16 = (insn16 ^ 0x0800) & 0xff00;
10064 comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ;
10065 comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20)
10066 | (REG_R5 << 15);
10067 break;
10068
10069 case 0xe:
10070 /* beqzS8 or bnezS8 */
10071 comp_insn16 = (insn16 ^ 0x0100) & 0xff00;
10072 comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ;
10073 comp_insn |= REG_R15 << 20;
10074 break;
10075
10076 default:
10077 break;
10078 }
10079 }
10080 if (comp_insn && re_insn)
10081 *re_insn = comp_insn;
10082 if (comp_insn16 && re_insn16)
10083 *re_insn16 = comp_insn16;
10084 }
10085
10086 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
10087
10088 static bfd_boolean
10089 nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10090 Elf_Internal_Rela *internal_relocs, int *insn_len,
10091 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10092 Elf_Internal_Shdr *symtab_hdr)
10093 {
10094 /* There are 3 variations for LONGJUMP2
10095 case 2-4; 1st insn convertible, 16-bit on,
10096 optimize off or optimize for space
10097 bnes38 rt, ra, $1 ; LONGJUMP2
10098 j label ; 25_PCREL
10099 $1:
10100
10101 case 4-4; 1st insn not convertible
10102 bne rt, ra, $1 ; LONGJUMP2
10103 j label ; 25_PCREL
10104 $1:
10105
10106 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
10107 bne rt, ra, $1 ; LONGJUMP2
10108 j label ; 25_PCREL
10109 $1: */
10110
10111 /* Get the reloc for the address from which the register is
10112 being loaded. This reloc will tell us which function is
10113 actually being called. */
10114
10115 bfd_vma laddr;
10116 int seq_len; /* Original length of instruction sequence. */
10117 Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend;
10118 int first_size;
10119 unsigned int i;
10120 bfd_signed_vma foff;
10121 uint32_t insn, re_insn = 0;
10122 uint16_t insn16, re_insn16 = 0;
10123 unsigned long reloc, cond_reloc;
10124
10125 enum elf_nds32_reloc_type checked_types[] =
10126 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
10127
10128 irelend = internal_relocs + sec->reloc_count;
10129 seq_len = GET_SEQ_LEN (irel->r_addend);
10130 laddr = irel->r_offset;
10131 *insn_len = seq_len;
10132 first_size = (seq_len == 6) ? 2 : 4;
10133
10134 i2_irelfn =
10135 find_relocs_at_address_addr (irel, internal_relocs,
10136 irelend, R_NDS32_25_PCREL_RELA,
10137 laddr + first_size);
10138
10139 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10140 {
10141 cond_irelfn =
10142 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10143 checked_types[i], laddr);
10144 if (cond_irelfn != irelend)
10145 break;
10146 }
10147
10148 if (i2_irelfn == irelend || cond_irelfn == irelend)
10149 {
10150 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP2",
10151 (uint64_t) irel->r_offset);
10152 return FALSE;
10153 }
10154
10155 /* Get the value of the symbol referred to by the reloc. */
10156 foff = calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr);
10157 if (foff == 0
10158 || foff < -CONSERVATIVE_16BIT_S1
10159 || foff >= CONSERVATIVE_16BIT_S1)
10160 return FALSE;
10161
10162 /* Get the all corresponding instructions. */
10163 if (first_size == 4)
10164 {
10165 insn = bfd_getb32 (contents + laddr);
10166 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10167 }
10168 else
10169 {
10170 insn16 = bfd_getb16 (contents + laddr);
10171 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10172 }
10173
10174 if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size)
10175 && foff < ACCURATE_8BIT_S1 - first_size)
10176 {
10177 if (first_size == 4)
10178 {
10179 /* Don't convert it to 16-bit now, keep this as relaxable for
10180 ``label reloc; INSN16''. */
10181
10182 /* Save comp_insn32 to buffer. */
10183 bfd_putb32 (re_insn, contents + irel->r_offset);
10184 *insn_len = 4;
10185 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
10186 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
10187 cond_reloc = R_NDS32_INSN16;
10188 }
10189 else
10190 {
10191 bfd_putb16 (re_insn16, contents + irel->r_offset);
10192 *insn_len = 2;
10193 reloc = R_NDS32_9_PCREL_RELA;
10194 cond_reloc = R_NDS32_NONE;
10195 }
10196 }
10197 else if (N32_OP6 (re_insn) == N32_OP6_BR1
10198 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
10199 && foff < ACCURATE_14BIT_S1 - first_size))
10200 {
10201 /* beqs label ; 15_PCREL */
10202 bfd_putb32 (re_insn, contents + irel->r_offset);
10203 *insn_len = 4;
10204 reloc = R_NDS32_15_PCREL_RELA;
10205 cond_reloc = R_NDS32_NONE;
10206 }
10207 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10208 && foff >= -CONSERVATIVE_16BIT_S1
10209 && foff < CONSERVATIVE_16BIT_S1)
10210 {
10211 /* beqz label ; 17_PCREL */
10212 bfd_putb32 (re_insn, contents + irel->r_offset);
10213 *insn_len = 4;
10214 reloc = R_NDS32_17_PCREL_RELA;
10215 cond_reloc = R_NDS32_NONE;
10216 }
10217 else
10218 return FALSE;
10219
10220 /* Set all relocations. */
10221 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc);
10222 irel->r_addend = i2_irelfn->r_addend;
10223
10224 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
10225 cond_reloc);
10226 cond_irelfn->r_addend = 0;
10227
10228 if ((seq_len ^ *insn_len ) & 0x2)
10229 {
10230 insn16 = NDS32_NOP16;
10231 bfd_putb16 (insn16, contents + irel->r_offset + 4);
10232 i2_irelfn->r_offset = 4;
10233 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
10234 R_NDS32_INSN16);
10235 i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10236 *insn_len += 2;
10237 }
10238 else
10239 i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info),
10240 R_NDS32_NONE);
10241 return TRUE;
10242 }
10243
10244 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
10245
10246 static bfd_boolean
10247 nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10248 Elf_Internal_Rela *internal_relocs, int *insn_len,
10249 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10250 Elf_Internal_Shdr *symtab_hdr)
10251 {
10252 /* There are 5 variations for LONGJUMP3
10253 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
10254 optimize off or optimize for space
10255 bnes38 rt, ra, $1 ; LONGJUMP3
10256 sethi ta, hi20(symbol) ; HI20
10257 ori ta, ta, lo12(symbol) ; LO12S0
10258 jr5 ta ;
10259 $1: ;
10260
10261 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
10262 bnes38 rt, ra, $1 ; LONGJUMP3
10263 sethi ta, hi20(symbol) ; HI20
10264 ori ta, ta, lo12(symbol) ; LO12S0
10265 jr5 ta ;
10266 $1: ; LABEL
10267
10268 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
10269 optimize off or optimize for space
10270 bne rt, ra, $1 ; LONGJUMP3
10271 sethi ta, hi20(symbol) ; HI20
10272 ori ta, ta, lo12(symbol) ; LO12S0
10273 jr5 ta ;
10274 $1: ;
10275
10276 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
10277 16-bit off if no INSN16
10278 bne rt, ra, $1 ; LONGJUMP3
10279 sethi ta, hi20(symbol) ; HI20
10280 ori ta, ta, lo12(symbol) ; LO12S0
10281 jr ta ;
10282 $1: ;
10283
10284 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
10285 16-bit off if no INSN16
10286 bne rt, ra, $1 ; LONGJUMP3
10287 sethi ta, hi20(symbol) ; HI20
10288 ori ta, ta, lo12(symbol) ; LO12S0
10289 jr ta ;
10290 $1: ; LABEL */
10291
10292 /* Get the reloc for the address from which the register is
10293 being loaded. This reloc will tell us which function is
10294 actually being called. */
10295 enum elf_nds32_reloc_type checked_types[] =
10296 { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA };
10297
10298 int reloc_off = 0, cond_removed = 0, convertible;
10299 bfd_vma laddr;
10300 int seq_len; /* Original length of instruction sequence. */
10301 Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend;
10302 int first_size;
10303 unsigned int i;
10304 bfd_signed_vma foff;
10305 uint32_t insn, re_insn = 0;
10306 uint16_t insn16, re_insn16 = 0;
10307 unsigned long reloc, cond_reloc;
10308
10309 irelend = internal_relocs + sec->reloc_count;
10310 seq_len = GET_SEQ_LEN (irel->r_addend);
10311 laddr = irel->r_offset;
10312 *insn_len = seq_len;
10313
10314 convertible = IS_1ST_CONVERT (irel->r_addend);
10315
10316 if (convertible)
10317 first_size = 2;
10318 else
10319 first_size = 4;
10320
10321 /* Get all needed relocations. */
10322 hi_irelfn =
10323 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10324 R_NDS32_HI20_RELA, laddr + first_size);
10325 lo_irelfn =
10326 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10327 R_NDS32_LO12S0_ORI_RELA,
10328 laddr + first_size + 4);
10329
10330 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10331 {
10332 cond_irelfn =
10333 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10334 checked_types[i], laddr);
10335 if (cond_irelfn != irelend)
10336 break;
10337 }
10338
10339 if (hi_irelfn == irelend
10340 || lo_irelfn == irelend
10341 || cond_irelfn == irelend)
10342 {
10343 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP3",
10344 (uint64_t) irel->r_offset);
10345 return FALSE;
10346 }
10347
10348 /* Get the value of the symbol referred to by the reloc. */
10349 foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr);
10350
10351 if (foff == 0
10352 || foff < -CONSERVATIVE_24BIT_S1
10353 || foff >= CONSERVATIVE_24BIT_S1)
10354 return FALSE;
10355
10356 /* Get the all corresponding instructions. */
10357 if (first_size == 4)
10358 {
10359 insn = bfd_getb32 (contents + laddr);
10360 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10361 }
10362 else
10363 {
10364 insn16 = bfd_getb16 (contents + laddr);
10365 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10366 }
10367
10368 /* For simplicity of coding, we are going to modify the section
10369 contents, the section relocs, and the BFD symbol table. We
10370 must tell the rest of the code not to free up this
10371 information. It would be possible to instead create a table
10372 of changes which have to be made, as is done in coff-mips.c;
10373 that would be more work, but would require less memory when
10374 the linker is run. */
10375
10376 if (re_insn16
10377 && foff >= -ACCURATE_8BIT_S1 - first_size
10378 && foff < ACCURATE_8BIT_S1 - first_size)
10379 {
10380 if (!(seq_len & 0x2))
10381 {
10382 /* Don't convert it to 16-bit now, keep this as relaxable
10383 for ``label reloc; INSN1a''6. */
10384 /* Save comp_insn32 to buffer. */
10385 bfd_putb32 (re_insn, contents + irel->r_offset);
10386 *insn_len = 4;
10387 reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ?
10388 R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA;
10389 cond_reloc = R_NDS32_INSN16;
10390 }
10391 else
10392 {
10393 /* Not optimize for speed; convert sequence to 16-bit. */
10394 /* Save comp_insn16 to buffer. */
10395 bfd_putb16 (re_insn16, contents + irel->r_offset);
10396 *insn_len = 2;
10397 reloc = R_NDS32_9_PCREL_RELA;
10398 cond_reloc = R_NDS32_NONE;
10399 }
10400 cond_removed = 1;
10401 }
10402 else if (N32_OP6 (re_insn) == N32_OP6_BR1
10403 && (foff >= -(ACCURATE_14BIT_S1 - first_size)
10404 && foff < ACCURATE_14BIT_S1 - first_size))
10405 {
10406 /* beqs label ; 15_PCREL */
10407 bfd_putb32 (re_insn, contents + irel->r_offset);
10408 *insn_len = 4;
10409 reloc = R_NDS32_15_PCREL_RELA;
10410 cond_reloc = R_NDS32_NONE;
10411 cond_removed = 1;
10412 }
10413 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10414 && foff >= -CONSERVATIVE_16BIT_S1
10415 && foff < CONSERVATIVE_16BIT_S1)
10416 {
10417 /* beqz label ; 17_PCREL */
10418 bfd_putb32 (re_insn, contents + irel->r_offset);
10419 *insn_len = 4;
10420 reloc = R_NDS32_17_PCREL_RELA;
10421 cond_reloc = R_NDS32_NONE;
10422 cond_removed = 1;
10423 }
10424 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
10425 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
10426 {
10427 /* Relax to one of the following 3 variations
10428
10429 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
10430 for space
10431 bnes38 rt, $1 ; LONGJUMP2
10432 j label ; 25_PCREL
10433 $1
10434
10435 case 4-4; 1st insn not convertible, others don't care
10436 bne rt, ra, $1 ; LONGJUMP2
10437 j label ; 25_PCREL
10438 $1
10439
10440 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
10441 bne rt, ra, $1 ; LONGJUMP2
10442 j label ; 25_PCREL
10443 $1 */
10444
10445 /* Offset for first instruction. */
10446
10447 /* Use j label as second instruction. */
10448 *insn_len = 4 + first_size;
10449 insn = INSN_J;
10450 bfd_putb32 (insn, contents + hi_irelfn->r_offset);
10451 reloc = R_NDS32_LONGJUMP2;
10452 cond_reloc = R_NDS32_25_PLTREL;
10453 }
10454 else
10455 return FALSE;
10456
10457 if (cond_removed == 1)
10458 {
10459 /* Set all relocations. */
10460 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc);
10461 irel->r_addend = hi_irelfn->r_addend;
10462
10463 cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info),
10464 cond_reloc);
10465 cond_irelfn->r_addend = 0;
10466 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
10467 R_NDS32_NONE);
10468 }
10469 else
10470 {
10471 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
10472 irel->r_addend = irel->r_addend;
10473 hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info),
10474 cond_reloc);
10475 }
10476
10477 if ((seq_len ^ *insn_len ) & 0x2)
10478 {
10479 insn16 = NDS32_NOP16;
10480 bfd_putb16 (insn16, contents + irel->r_offset + *insn_len);
10481 lo_irelfn->r_offset = *insn_len;
10482 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
10483 R_NDS32_INSN16);
10484 lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
10485 *insn_len += 2;
10486 }
10487 else
10488 lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info),
10489 R_NDS32_NONE);
10490 return TRUE;
10491 }
10492
10493 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
10494
10495 static bfd_boolean
10496 nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10497 Elf_Internal_Rela *internal_relocs, int *insn_len,
10498 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10499 Elf_Internal_Shdr *symtab_hdr)
10500 {
10501 /* The pattern for LONGCALL4. Support for function cse.
10502 sethi ta, hi20(symbol) ; LONGCALL4/HI20
10503 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10504 jral ta ; PTR_RES/EMPTY/INSN16 */
10505
10506 bfd_vma laddr;
10507 uint32_t insn;
10508 Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel;
10509 Elf_Internal_Rela *irelend;
10510 bfd_signed_vma foff;
10511
10512 irelend = internal_relocs + sec->reloc_count;
10513 laddr = irel->r_offset;
10514
10515 /* Get the reloc for the address from which the register is
10516 being loaded. This reloc will tell us which function is
10517 actually being called. */
10518 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10519 R_NDS32_HI20_RELA, laddr);
10520
10521 if (hi_irel == irelend)
10522 {
10523 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4",
10524 (uint64_t) irel->r_offset);
10525 return FALSE;
10526 }
10527
10528 /* Get the value of the symbol referred to by the reloc. */
10529 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr);
10530
10531 /* This condition only happened when symbol is undefined. */
10532 if (foff == 0
10533 || foff < -CONSERVATIVE_24BIT_S1
10534 || foff >= CONSERVATIVE_24BIT_S1)
10535 return FALSE;
10536
10537 /* Relax to: jal symbol; 25_PCREL. */
10538 /* For simplicity of coding, we are going to modify the section
10539 contents, the section relocs, and the BFD symbol table. We
10540 must tell the rest of the code not to free up this
10541 information. It would be possible to instead create a table
10542 of changes which have to be made, as is done in coff-mips.c;
10543 that would be more work, but would require less memory when
10544 the linker is run. */
10545
10546 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10547 R_NDS32_PTR_RESOLVED, irel->r_addend);
10548 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10549 R_NDS32_EMPTY, irel->r_addend);
10550
10551 if (ptr_irel == irelend || em_irel == irelend)
10552 {
10553 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4",
10554 (uint64_t) irel->r_offset);
10555 return FALSE;
10556 }
10557 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10558 insn = bfd_getb32 (contents + irel->r_addend);
10559 if (insn & 0x80000000)
10560 return FALSE;
10561
10562 /* Replace the long call with a jal. */
10563 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10564 R_NDS32_25_PCREL_RELA);
10565 ptr_irel->r_addend = 1;
10566
10567 /* We don't resolve this here but resolve it in relocate_section. */
10568 insn = INSN_JAL;
10569 bfd_putb32 (insn, contents + em_irel->r_offset);
10570
10571 irel->r_info =
10572 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10573
10574 /* If there is function cse, HI20 can not remove now. */
10575 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10576 R_NDS32_LONGCALL4, laddr);
10577 if (call_irel == irelend)
10578 {
10579 *insn_len = 0;
10580 hi_irel->r_info =
10581 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10582 }
10583
10584 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10585 R_NDS32_INSN16, irel->r_addend);
10586 if (insn_irel != irelend)
10587 insn_irel->r_info =
10588 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10589
10590 return TRUE;
10591 }
10592
10593 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
10594
10595 static bfd_boolean
10596 nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10597 Elf_Internal_Rela *internal_relocs, int *insn_len,
10598 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10599 Elf_Internal_Shdr *symtab_hdr)
10600 {
10601 /* The pattern for LONGCALL5.
10602 bltz rt, .L1 ; LONGCALL5/17_PCREL
10603 jal symbol ; 25_PCREL
10604 .L1: */
10605
10606 bfd_vma laddr;
10607 uint32_t insn;
10608 Elf_Internal_Rela *cond_irel, *irelend;
10609 bfd_signed_vma foff;
10610
10611 irelend = internal_relocs + sec->reloc_count;
10612 laddr = irel->r_offset;
10613 insn = bfd_getb32 (contents + laddr);
10614
10615 /* Get the reloc for the address from which the register is
10616 being loaded. This reloc will tell us which function is
10617 actually being called. */
10618 cond_irel =
10619 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10620 R_NDS32_25_PCREL_RELA, irel->r_addend);
10621 if (cond_irel == irelend)
10622 {
10623 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL5",
10624 (uint64_t) irel->r_offset);
10625 return FALSE;
10626 }
10627
10628 /* Get the value of the symbol referred to by the reloc. */
10629 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr);
10630
10631 if (foff == 0
10632 || foff < -CONSERVATIVE_16BIT_S1
10633 || foff >= CONSERVATIVE_16BIT_S1)
10634 return FALSE;
10635
10636 /* Relax to bgezal rt, label ; 17_PCREL
10637 or bltzal rt, label ; 17_PCREL. */
10638
10639 /* Convert to complimentary conditional call. */
10640 insn = CONVERT_CONDITION_CALL (insn);
10641
10642 /* For simplicity of coding, we are going to modify the section
10643 contents, the section relocs, and the BFD symbol table. We
10644 must tell the rest of the code not to free up this
10645 information. It would be possible to instead create a table
10646 of changes which have to be made, as is done in coff-mips.c;
10647 that would be more work, but would require less memory when
10648 the linker is run. */
10649
10650 /* Modify relocation and contents. */
10651 cond_irel->r_info =
10652 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA);
10653
10654 /* Replace the long call with a bgezal. */
10655 bfd_putb32 (insn, contents + cond_irel->r_offset);
10656 *insn_len = 0;
10657
10658 /* Clean unnessary relocations. */
10659 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10660
10661 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10662 R_NDS32_17_PCREL_RELA, laddr);
10663 cond_irel->r_info =
10664 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10665
10666 return TRUE;
10667 }
10668
10669 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
10670
10671 static bfd_boolean
10672 nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10673 Elf_Internal_Rela *internal_relocs, int *insn_len,
10674 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10675 Elf_Internal_Shdr *symtab_hdr)
10676 {
10677 /* The pattern for LONGCALL6.
10678 bltz rt, .L1 ; LONGCALL6/17_PCREL
10679 sethi ta, hi20(symbol) ; HI20/PTR
10680 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10681 jral ta ; PTR_RES/EMPTY/INSN16
10682 .L1 */
10683
10684 bfd_vma laddr;
10685 uint32_t insn;
10686 Elf_Internal_Rela *em_irel, *cond_irel, *irelend;
10687 bfd_signed_vma foff;
10688
10689 irelend = internal_relocs + sec->reloc_count;
10690 laddr = irel->r_offset;
10691
10692 /* Get the reloc for the address from which the register is
10693 being loaded. This reloc will tell us which function is
10694 actually being called. */
10695 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10696 R_NDS32_EMPTY, irel->r_addend);
10697
10698 if (em_irel == irelend)
10699 {
10700 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL6",
10701 (uint64_t) irel->r_offset);
10702 return FALSE;
10703 }
10704
10705 /* Get the value of the symbol referred to by the reloc. */
10706 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr);
10707
10708 if (foff == 0
10709 || foff < -CONSERVATIVE_24BIT_S1
10710 || foff >= CONSERVATIVE_24BIT_S1)
10711 return FALSE;
10712
10713 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
10714 insn = bfd_getb32 (contents + irel->r_addend);
10715 if (insn & 0x80000000)
10716 return FALSE;
10717
10718 insn = bfd_getb32 (contents + laddr);
10719 if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10720 {
10721 /* Relax to bgezal rt, label ; 17_PCREL
10722 or bltzal rt, label ; 17_PCREL. */
10723
10724 /* Convert to complimentary conditional call. */
10725 *insn_len = 0;
10726 insn = CONVERT_CONDITION_CALL (insn);
10727 bfd_putb32 (insn, contents + em_irel->r_offset);
10728
10729 em_irel->r_info =
10730 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA);
10731
10732 /* Set resolved relocation. */
10733 cond_irel =
10734 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10735 R_NDS32_PTR_RESOLVED, irel->r_addend);
10736 if (cond_irel == irelend)
10737 {
10738 _bfd_error_handler (unrecognized_reloc_msg, abfd,
10739 "R_NDS32_LONGCALL6", (uint64_t) irel->r_offset);
10740 return FALSE;
10741 }
10742 cond_irel->r_addend = 1;
10743
10744 /* Clear relocations. */
10745
10746 irel->r_info =
10747 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10748
10749 cond_irel =
10750 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10751 R_NDS32_17_PCREL_RELA, laddr);
10752 if (cond_irel != irelend)
10753 cond_irel->r_info =
10754 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10755
10756 cond_irel =
10757 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10758 R_NDS32_INSN16, irel->r_addend);
10759 if (cond_irel != irelend)
10760 cond_irel->r_info =
10761 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10762
10763 }
10764 else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1)
10765 {
10766 /* Relax to the following instruction sequence
10767 bltz rt, .L1 ; LONGCALL2/17_PCREL
10768 jal symbol ; 25_PCREL/PTR_RES
10769 .L1 */
10770 *insn_len = 4;
10771 /* Convert instruction. */
10772 insn = INSN_JAL;
10773 bfd_putb32 (insn, contents + em_irel->r_offset);
10774
10775 /* Convert relocations. */
10776 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info),
10777 R_NDS32_25_PCREL_RELA);
10778 irel->r_info =
10779 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5);
10780
10781 /* Set resolved relocation. */
10782 cond_irel =
10783 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10784 R_NDS32_PTR_RESOLVED, irel->r_addend);
10785 if (cond_irel == irelend)
10786 {
10787 _bfd_error_handler (unrecognized_reloc_msg, abfd,
10788 "R_NDS32_LONGCALL6", (uint64_t) irel->r_offset);
10789 return FALSE;
10790 }
10791 cond_irel->r_addend = 1;
10792
10793 cond_irel =
10794 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10795 R_NDS32_INSN16, irel->r_addend);
10796 if (cond_irel != irelend)
10797 cond_irel->r_info =
10798 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
10799 }
10800 return TRUE;
10801 }
10802
10803 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10804
10805 static bfd_boolean
10806 nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10807 Elf_Internal_Rela *internal_relocs, int *insn_len,
10808 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
10809 Elf_Internal_Shdr *symtab_hdr)
10810 {
10811 /* The pattern for LONGJUMP4.
10812 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10813 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10814 jr ta ; PTR_RES/INSN16/EMPTY */
10815
10816 bfd_vma laddr;
10817 int seq_len; /* Original length of instruction sequence. */
10818 uint32_t insn;
10819 Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend;
10820 bfd_signed_vma foff;
10821
10822 irelend = internal_relocs + sec->reloc_count;
10823 seq_len = GET_SEQ_LEN (irel->r_addend);
10824 laddr = irel->r_offset;
10825 *insn_len = seq_len;
10826
10827 /* Get the reloc for the address from which the register is
10828 being loaded. This reloc will tell us which function is
10829 actually being called. */
10830
10831 hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10832 R_NDS32_HI20_RELA, laddr);
10833
10834 if (hi_irel == irelend)
10835 {
10836 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4",
10837 (uint64_t) irel->r_offset);
10838 return FALSE;
10839 }
10840
10841 /* Get the value of the symbol referred to by the reloc. */
10842 foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr);
10843
10844 if (foff == 0
10845 || foff >= CONSERVATIVE_24BIT_S1
10846 || foff < -CONSERVATIVE_24BIT_S1)
10847 return FALSE;
10848
10849 /* Convert it to "j label", it may be converted to j8 in the final
10850 pass of relaxation. Therefore, we do not consider this currently. */
10851 ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10852 R_NDS32_PTR_RESOLVED, irel->r_addend);
10853 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10854 R_NDS32_EMPTY, irel->r_addend);
10855
10856 if (ptr_irel == irelend || em_irel == irelend)
10857 {
10858 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4",
10859 (uint64_t) irel->r_offset);
10860 return FALSE;
10861 }
10862
10863 em_irel->r_info =
10864 ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA);
10865 ptr_irel->r_addend = 1;
10866
10867 /* Write instruction. */
10868 insn = INSN_J;
10869 bfd_putb32 (insn, contents + em_irel->r_offset);
10870
10871 /* Clear relocations. */
10872 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10873
10874 /* If there is function cse, HI20 can not remove now. */
10875 call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10876 R_NDS32_LONGJUMP4, laddr);
10877 if (call_irel == irelend)
10878 {
10879 *insn_len = 0;
10880 hi_irel->r_info =
10881 ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE);
10882 }
10883
10884 return TRUE;
10885 }
10886
10887 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10888
10889 static bfd_boolean
10890 nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
10891 Elf_Internal_Rela *internal_relocs, int *insn_len,
10892 int *seq_len, bfd_byte *contents,
10893 Elf_Internal_Sym *isymbuf,
10894 Elf_Internal_Shdr *symtab_hdr)
10895 {
10896 /* There are 2 variations for LONGJUMP5
10897 case 2-4; 1st insn convertible, 16-bit on.
10898 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10899 j label ; 25_PCREL/INSN16
10900 $1:
10901
10902 case 4-4; 1st insn not convertible
10903 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10904 j label ; 25_PCREL/INSN16
10905 .L1: */
10906
10907 bfd_vma laddr;
10908 Elf_Internal_Rela *cond_irel, *irelend;
10909 unsigned int i;
10910 bfd_signed_vma foff;
10911 uint32_t insn, re_insn = 0;
10912 uint16_t insn16, re_insn16 = 0;
10913 unsigned long reloc;
10914
10915 enum elf_nds32_reloc_type checked_types[] =
10916 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
10917 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
10918
10919 irelend = internal_relocs + sec->reloc_count;
10920 laddr = irel->r_offset;
10921
10922 /* Get the reloc for the address from which the register is
10923 being loaded. This reloc will tell us which function is
10924 actually being called. */
10925
10926 cond_irel =
10927 find_relocs_at_address_addr (irel, internal_relocs, irelend,
10928 R_NDS32_25_PCREL_RELA, irel->r_addend);
10929 if (cond_irel == irelend)
10930 {
10931 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP5",
10932 (uint64_t) irel->r_offset);
10933 return FALSE;
10934 }
10935
10936 /* Get the value of the symbol referred to by the reloc. */
10937 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr);
10938
10939 if (foff == 0
10940 || foff < -CONSERVATIVE_16BIT_S1
10941 || foff >= CONSERVATIVE_16BIT_S1)
10942 return FALSE;
10943
10944 /* Get the all corresponding instructions. */
10945 insn = bfd_getb32 (contents + laddr);
10946 /* Check instruction size. */
10947 if (insn & 0x80000000)
10948 {
10949 *seq_len = 0;
10950 insn16 = insn >> 16;
10951 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
10952 }
10953 else
10954 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
10955
10956 if (N32_OP6 (re_insn) == N32_OP6_BR1
10957 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
10958 {
10959 /* beqs label ; 15_PCREL. */
10960 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10961 reloc = R_NDS32_15_PCREL_RELA;
10962 }
10963 else if (N32_OP6 (re_insn) == N32_OP6_BR2
10964 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
10965 {
10966 /* beqz label ; 17_PCREL. */
10967 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10968 reloc = R_NDS32_17_PCREL_RELA;
10969 }
10970 else if ( N32_OP6 (re_insn) == N32_OP6_BR3
10971 && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1)
10972 {
10973 /* beqc label ; 9_PCREL. */
10974 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
10975 reloc = R_NDS32_WORD_9_PCREL_RELA;
10976 }
10977 else
10978 return FALSE;
10979
10980 /* Set all relocations. */
10981 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc);
10982
10983 /* Clean relocations. */
10984 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
10985 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
10986 {
10987 cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
10988 checked_types[i], laddr);
10989 if (cond_irel != irelend)
10990 {
10991 if (*seq_len == 0
10992 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
10993 {
10994 /* If the branch instruction is 2 byte, it cannot remove
10995 directly. Only convert it to nop16 and remove it after
10996 checking alignment issue. */
10997 insn16 = NDS32_NOP16;
10998 bfd_putb16 (insn16, contents + laddr);
10999 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
11000 }
11001 else
11002 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
11003 R_NDS32_NONE);
11004 }
11005 }
11006 *insn_len = 0;
11007
11008 return TRUE;
11009 }
11010
11011 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
11012
11013 static bfd_boolean
11014 nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11015 Elf_Internal_Rela *internal_relocs, int *insn_len,
11016 int *seq_len, bfd_byte *contents,
11017 Elf_Internal_Sym *isymbuf,
11018 Elf_Internal_Shdr *symtab_hdr)
11019 {
11020 /* There are 5 variations for LONGJUMP6
11021 case : 2-4-4-4; 1st insn convertible, 16-bit on.
11022 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
11023 sethi ta, hi20(symbol) ; HI20/PTR
11024 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
11025 jr ta ; PTR_RES/INSN16/EMPTY
11026 .L1:
11027
11028 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
11029 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
11030 sethi ta, hi20(symbol) ; HI20/PTR
11031 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
11032 jr ta ; PTR_RES/INSN16/EMPTY
11033 .L1: */
11034
11035 enum elf_nds32_reloc_type checked_types[] =
11036 { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA,
11037 R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 };
11038
11039 int reloc_off = 0, cond_removed = 0;
11040 bfd_vma laddr;
11041 Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel;
11042 unsigned int i;
11043 bfd_signed_vma foff;
11044 uint32_t insn, re_insn = 0;
11045 uint16_t insn16, re_insn16 = 0;
11046 unsigned long reloc;
11047
11048 irelend = internal_relocs + sec->reloc_count;
11049 laddr = irel->r_offset;
11050
11051 /* Get the reloc for the address from which the register is
11052 being loaded. This reloc will tell us which function is
11053 actually being called. */
11054 em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
11055 R_NDS32_EMPTY, irel->r_addend);
11056
11057 if (em_irel == irelend)
11058 {
11059 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP6",
11060 (uint64_t) irel->r_offset);
11061 return FALSE;
11062 }
11063
11064 /* Get the value of the symbol referred to by the reloc. */
11065 foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr);
11066
11067 if (foff == 0
11068 || foff < -CONSERVATIVE_24BIT_S1
11069 || foff >= CONSERVATIVE_24BIT_S1)
11070 return FALSE;
11071
11072 insn = bfd_getb32 (contents + laddr);
11073 /* Check instruction size. */
11074 if (insn & 0x80000000)
11075 {
11076 *seq_len = 0;
11077 insn16 = insn >> 16;
11078 nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn);
11079 }
11080 else
11081 nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn);
11082
11083 /* For simplicity of coding, we are going to modify the section
11084 contents, the section relocs, and the BFD symbol table. We
11085 must tell the rest of the code not to free up this
11086 information. It would be possible to instead create a table
11087 of changes which have to be made, as is done in coff-mips.c;
11088 that would be more work, but would require less memory when
11089 the linker is run. */
11090
11091 if (N32_OP6 (re_insn) == N32_OP6_BR1
11092 && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1))
11093 {
11094 /* beqs label ; 15_PCREL. */
11095 bfd_putb32 (re_insn, contents + em_irel->r_offset);
11096 reloc = R_NDS32_15_PCREL_RELA;
11097 cond_removed = 1;
11098 }
11099 else if (N32_OP6 (re_insn) == N32_OP6_BR2
11100 && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1)
11101 {
11102 /* beqz label ; 17_PCREL. */
11103 bfd_putb32 (re_insn, contents + em_irel->r_offset);
11104 reloc = R_NDS32_17_PCREL_RELA;
11105 cond_removed = 1;
11106 }
11107 else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off
11108 && foff < CONSERVATIVE_24BIT_S1 - reloc_off)
11109 {
11110 /* Relax to one of the following 2 variations
11111
11112 case 2-4; 1st insn convertible, 16-bit on.
11113 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
11114 j label ; 25_PCREL/INSN16
11115 $1:
11116
11117 case 4-4; 1st insn not convertible
11118 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
11119 j label ; 25_PCREL/INSN16
11120 .L1: */
11121
11122 /* Use j label as second instruction. */
11123 insn = INSN_J;
11124 reloc = R_NDS32_25_PCREL_RELA;
11125 bfd_putb32 (insn, contents + em_irel->r_offset);
11126 }
11127 else
11128 return FALSE;
11129
11130 /* Set all relocations. */
11131 em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc);
11132
11133 cond_irel =
11134 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11135 R_NDS32_PTR_RESOLVED, em_irel->r_offset);
11136 cond_irel->r_addend = 1;
11137
11138 /* Use INSN16 of first branch instruction to distinguish if keeping
11139 INSN16 of final instruction or not. */
11140 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
11141 R_NDS32_INSN16, irel->r_offset);
11142 if (insn_irel == irelend)
11143 {
11144 /* Clean the final INSN16. */
11145 insn_irel =
11146 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11147 R_NDS32_INSN16, em_irel->r_offset);
11148 insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
11149 R_NDS32_NONE);
11150 }
11151
11152 if (cond_removed == 1)
11153 {
11154 *insn_len = 0;
11155
11156 /* Clear relocations. */
11157 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11158
11159 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
11160 {
11161 cond_irel =
11162 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11163 checked_types[i], laddr);
11164 if (cond_irel != irelend)
11165 {
11166 if (*seq_len == 0
11167 && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16))
11168 {
11169 /* If the branch instruction is 2 byte, it cannot remove
11170 directly. Only convert it to nop16 and remove it after
11171 checking alignment issue. */
11172 insn16 = NDS32_NOP16;
11173 bfd_putb16 (insn16, contents + laddr);
11174 cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
11175 }
11176 else
11177 cond_irel->r_info =
11178 ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE);
11179 }
11180 }
11181 }
11182 else
11183 {
11184 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11185 R_NDS32_LONGJUMP5);
11186 }
11187
11188 return TRUE;
11189 }
11190
11191 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
11192
11193 static bfd_boolean
11194 nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11195 Elf_Internal_Rela *internal_relocs, int *insn_len,
11196 int *seq_len, bfd_byte *contents,
11197 Elf_Internal_Sym *isymbuf,
11198 Elf_Internal_Shdr *symtab_hdr)
11199 {
11200 /* There are 2 variations for LONGJUMP5
11201 case 2-4; 1st insn convertible, 16-bit on.
11202 movi55 ta, imm11 ; LONGJUMP7/INSN16
11203 beq rt, ta, label ; 15_PCREL
11204
11205 case 4-4; 1st insn not convertible
11206 movi55 ta, imm11 ; LONGJUMP7/INSN16
11207 beq rt, ta, label ; 15_PCREL */
11208
11209 bfd_vma laddr;
11210 Elf_Internal_Rela *cond_irel, *irelend, *insn_irel;
11211 bfd_signed_vma foff;
11212 uint32_t insn, re_insn = 0;
11213 uint16_t insn16;
11214 uint32_t imm11;
11215
11216 irelend = internal_relocs + sec->reloc_count;
11217 laddr = irel->r_offset;
11218
11219 /* Get the reloc for the address from which the register is
11220 being loaded. This reloc will tell us which function is
11221 actually being called. */
11222
11223 cond_irel =
11224 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11225 R_NDS32_15_PCREL_RELA, irel->r_addend);
11226 if (cond_irel == irelend)
11227 {
11228 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP7",
11229 (uint64_t) irel->r_offset);
11230 return FALSE;
11231 }
11232
11233 /* Get the value of the symbol referred to by the reloc. */
11234 foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr);
11235
11236 if (foff == 0
11237 || foff < -CONSERVATIVE_8BIT_S1
11238 || foff >= CONSERVATIVE_8BIT_S1)
11239 return FALSE;
11240
11241 /* Get the first instruction for its size. */
11242 insn = bfd_getb32 (contents + laddr);
11243 if (insn & 0x80000000)
11244 {
11245 *seq_len = 0;
11246 /* Get the immediate from movi55. */
11247 imm11 = N16_IMM5S (insn >> 16);
11248 }
11249 else
11250 {
11251 /* Get the immediate from movi. */
11252 imm11 = N32_IMM20S (insn);
11253 }
11254
11255 /* Get the branch instruction. */
11256 insn = bfd_getb32 (contents + irel->r_addend);
11257 /* Convert instruction to BR3. */
11258 if ((insn >> 14) & 0x1)
11259 re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0);
11260 else
11261 re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0);
11262
11263 bfd_putb32 (re_insn, contents + cond_irel->r_offset);
11264
11265 /* Set all relocations. */
11266 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
11267 R_NDS32_WORD_9_PCREL_RELA);
11268
11269 /* Clean relocations. */
11270 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11271 insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend,
11272 R_NDS32_INSN16, irel->r_offset);
11273 if (insn_irel != irelend)
11274 {
11275 if (*seq_len == 0)
11276 {
11277 /* If the first insntruction is 16bit, convert it to nop16. */
11278 insn16 = NDS32_NOP16;
11279 bfd_putb16 (insn16, contents + laddr);
11280 insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG;
11281 }
11282 else
11283 cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info),
11284 R_NDS32_NONE);
11285 }
11286 *insn_len = 0;
11287
11288 return TRUE;
11289 }
11290
11291 /* We figure out and reassign the best gp value in nds32_elf_final_sda_base
11292 for each relax round. But the gp may changed dramatically and then cause
11293 the truncated to fit errors for the the converted gp instructions.
11294 Therefore, we must reserve the minimum but safe enough size to prevent it. */
11295
11296 static bfd_boolean
11297 nds32_elf_relax_guard (bfd_vma *access_addr, bfd_vma local_sda, asection *sec,
11298 Elf_Internal_Rela *irel, bfd_boolean *again,
11299 bfd_boolean init,
11300 struct elf_nds32_link_hash_table *table,
11301 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr)
11302
11303 {
11304 int offset_to_gp;
11305 static bfd_boolean sec_pass = FALSE;
11306 static asection *first_sec = NULL, *sym_sec;
11307 /* Record the number of instructions which may be removed. */
11308 static int count = 0, record_count;
11309 Elf_Internal_Sym *isym;
11310 struct elf_link_hash_entry *h = NULL;
11311 int indx;
11312 unsigned long r_symndx;
11313 bfd *abfd = sec->owner;
11314 static bfd_vma record_sda = 0;
11315 int sda_offset = 0;
11316
11317 /* Force doing relaxation when hyper-relax is high. */
11318 if (table->hyper_relax == 2)
11319 return TRUE;
11320
11321 /* Do not relax the load/store patterns for the first
11322 relax round. */
11323 if (init)
11324 {
11325 if (!first_sec)
11326 first_sec = sec;
11327 else if (first_sec == sec)
11328 {
11329 record_count = count;
11330 count = 0;
11331 sec_pass = TRUE;
11332 }
11333
11334 if (!sec_pass)
11335 *again = TRUE;
11336
11337 return TRUE;
11338 }
11339
11340 /* Generally, _SDA_BASE_ is fixed or smaller. But the large
11341 DATA_SEGMENT_ALIGN size in the linker script may make it
11342 get even bigger. */
11343 if (record_sda == 0)
11344 record_sda = local_sda;
11345 else if (local_sda > record_sda)
11346 sda_offset = local_sda - record_sda;
11347
11348 /* Assume the instruction will be removed in the best case. */
11349 count++;
11350
11351 /* We record the offset to gp for each symbol, and then check
11352 if it is changed dramatically after relaxing.
11353 (global symbol): elf32_nds32_hash_entry (h)->offset_to_gp
11354 (local symbol) : elf32_nds32_local_gp_offset (abfd)[r_symndx]. */
11355 r_symndx = ELF32_R_SYM (irel->r_info);
11356 if (r_symndx >= symtab_hdr->sh_info)
11357 {
11358 /* Global symbols. */
11359 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
11360 h = elf_sym_hashes (abfd)[indx];
11361 sym_sec = h->root.u.def.section;
11362 if (NDS32_GUARD_SEC_P (sym_sec->flags)
11363 || bfd_is_abs_section (sym_sec))
11364 {
11365 /* Forbid doing relaxation when hyper-relax is low. */
11366 if (table->hyper_relax == 0)
11367 return FALSE;
11368
11369 offset_to_gp = *access_addr - local_sda;
11370 if (elf32_nds32_hash_entry (h)->offset_to_gp == 0)
11371 elf32_nds32_hash_entry (h)->offset_to_gp = offset_to_gp;
11372 else if (abs (elf32_nds32_hash_entry (h)->offset_to_gp)
11373 < abs (offset_to_gp) - sda_offset)
11374 {
11375 /* This may cause the error, so we reserve the
11376 safe enough size for relaxing. */
11377 if (*access_addr >= local_sda)
11378 *access_addr += (record_count * 4);
11379 else
11380 *access_addr -= (record_count * 4);
11381 }
11382 return sec_pass;
11383 }
11384 }
11385 else
11386 {
11387 /* Local symbols. */
11388 if (!elf32_nds32_allocate_local_sym_info (abfd))
11389 return FALSE;
11390 isym = isymbuf + r_symndx;
11391
11392 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
11393 if (NDS32_GUARD_SEC_P (sym_sec->flags))
11394 {
11395 /* Forbid doing relaxation when hyper-relax is low. */
11396 if (table->hyper_relax == 0)
11397 return FALSE;
11398
11399 offset_to_gp = *access_addr - local_sda;
11400 if (elf32_nds32_local_gp_offset (abfd)[r_symndx] == 0)
11401 elf32_nds32_local_gp_offset (abfd)[r_symndx] = offset_to_gp;
11402 else if (abs (elf32_nds32_local_gp_offset (abfd)[r_symndx])
11403 < abs (offset_to_gp) - sda_offset)
11404 {
11405 /* This may cause the error, so we reserve the
11406 safe enough size for relaxing. */
11407 if (*access_addr >= local_sda)
11408 *access_addr += (record_count * 4);
11409 else
11410 *access_addr -= (record_count * 4);
11411 }
11412 return sec_pass;
11413 }
11414 }
11415
11416 return TRUE;
11417 }
11418
11419 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
11420
11421 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
11422
11423 static bfd_boolean
11424 nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd,
11425 asection *sec, Elf_Internal_Rela *irel,
11426 Elf_Internal_Rela *internal_relocs, int *insn_len,
11427 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11428 Elf_Internal_Shdr *symtab_hdr, int load_store_relax,
11429 struct elf_nds32_link_hash_table *table)
11430 {
11431 int eliminate_sethi = 0, range_type;
11432 unsigned int i;
11433 bfd_vma local_sda, laddr;
11434 int seq_len; /* Original length of instruction sequence. */
11435 uint32_t insn;
11436 Elf_Internal_Rela *hi_irelfn = NULL, *irelend;
11437 bfd_vma access_addr = 0;
11438 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
11439 struct elf_link_hash_entry *h = NULL;
11440 int indx;
11441 enum elf_nds32_reloc_type checked_types[] =
11442 { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20,
11443 R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20,
11444 R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20,
11445 R_NDS32_TLS_LE_HI20
11446 };
11447
11448 irelend = internal_relocs + sec->reloc_count;
11449 seq_len = GET_SEQ_LEN (irel->r_addend);
11450 laddr = irel->r_offset;
11451 *insn_len = seq_len;
11452
11453 /* Get the high part relocation. */
11454 for (i = 0; i < ARRAY_SIZE (checked_types); i++)
11455 {
11456 hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend,
11457 checked_types[i], laddr);
11458 if (hi_irelfn != irelend)
11459 break;
11460 }
11461
11462 if (hi_irelfn == irelend)
11463 {
11464 /* Not R_NDS32_HI20_RELA. */
11465 if (i != 0)
11466 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LOADSTORE",
11467 (uint64_t) irel->r_offset);
11468 return FALSE;
11469 }
11470
11471 range_type = GET_LOADSTORE_RANGE (irel->r_addend);
11472 nds32_elf_final_sda_base (sec->output_section->owner,
11473 link_info, &local_sda, FALSE);
11474
11475 switch (ELF32_R_TYPE (hi_irelfn->r_info))
11476 {
11477 case R_NDS32_HI20_RELA:
11478 insn = bfd_getb32 (contents + laddr);
11479 access_addr =
11480 calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr);
11481
11482 if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info)
11483 {
11484 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
11485 h = elf_sym_hashes (abfd)[indx];
11486 }
11487
11488 /* Try movi. */
11489 if (range_type == NDS32_LOADSTORE_IMM
11490 && access_addr < CONSERVATIVE_20BIT
11491 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
11492 {
11493 eliminate_sethi = 1;
11494 break;
11495 }
11496
11497 if (h && strcmp (h->root.root.string, FP_BASE_NAME) == 0)
11498 {
11499 eliminate_sethi = 1;
11500 break;
11501 }
11502 else if (!nds32_elf_relax_guard (&access_addr, local_sda, sec, hi_irelfn,
11503 NULL, FALSE, table, isymbuf, symtab_hdr))
11504 return FALSE;
11505
11506 if (!load_store_relax)
11507 return FALSE;
11508
11509 /* Case for set gp register. */
11510 if (N32_RT5 (insn) == REG_GP)
11511 return FALSE;
11512
11513 if (range_type == NDS32_LOADSTORE_FLOAT_S
11514 || range_type == NDS32_LOADSTORE_FLOAT_D)
11515 {
11516 range_l = sdata_range[0][0];
11517 range_h = sdata_range[0][1];
11518 }
11519 else
11520 {
11521 range_l = sdata_range[1][0];
11522 range_h = sdata_range[1][1];
11523 }
11524 break;
11525
11526 default:
11527 return FALSE;
11528 }
11529
11530 /* Delete sethi instruction. */
11531 if (eliminate_sethi == 1
11532 || (local_sda <= access_addr && (access_addr - local_sda) < range_h)
11533 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
11534 {
11535 hi_irelfn->r_info =
11536 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE);
11537 irel->r_info =
11538 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11539 *insn_len = 0;
11540 return TRUE;
11541 }
11542
11543 return FALSE;
11544 }
11545
11546 /* Relax LO12 relocation for nds32_elf_relax_section. */
11547
11548 static void
11549 nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd,
11550 asection *sec, Elf_Internal_Rela *irel,
11551 Elf_Internal_Rela *internal_relocs, bfd_byte *contents,
11552 Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr,
11553 struct elf_nds32_link_hash_table *table)
11554 {
11555 uint32_t insn;
11556 bfd_vma local_sda, laddr;
11557 unsigned long reloc;
11558 bfd_vma access_addr;
11559 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
11560 Elf_Internal_Rela *irelfn = NULL, *irelend;
11561 struct elf_link_hash_entry *h = NULL;
11562 int indx;
11563
11564 /* For SDA base relative relaxation. */
11565 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11566 &local_sda, FALSE);
11567
11568 irelend = internal_relocs + sec->reloc_count;
11569 laddr = irel->r_offset;
11570 insn = bfd_getb32 (contents + laddr);
11571
11572 if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI)
11573 return;
11574
11575 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11576
11577 if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
11578 {
11579 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
11580 h = elf_sym_hashes (abfd)[indx];
11581 }
11582
11583 /* Try movi. */
11584 if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT
11585 && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0)))
11586 {
11587 reloc = R_NDS32_20_RELA;
11588 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11589 insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0);
11590 bfd_putb32 (insn, contents + laddr);
11591 }
11592 else
11593 {
11594 if (h && strcmp (h->root.root.string, FP_BASE_NAME) == 0)
11595 {
11596 /* Fall through. */
11597 }
11598 else if (!nds32_elf_relax_guard (&access_addr, local_sda, sec, irel, NULL,
11599 FALSE, table, isymbuf, symtab_hdr))
11600 return;
11601
11602 range_l = sdata_range[1][0];
11603 range_h = sdata_range[1][1];
11604 switch (ELF32_R_TYPE (irel->r_info))
11605 {
11606 case R_NDS32_LO12S0_RELA:
11607 reloc = R_NDS32_SDA19S0_RELA;
11608 break;
11609 case R_NDS32_LO12S1_RELA:
11610 reloc = R_NDS32_SDA18S1_RELA;
11611 break;
11612 case R_NDS32_LO12S2_RELA:
11613 reloc = R_NDS32_SDA17S2_RELA;
11614 break;
11615 case R_NDS32_LO12S2_DP_RELA:
11616 range_l = sdata_range[0][0];
11617 range_h = sdata_range[0][1];
11618 reloc = R_NDS32_SDA12S2_DP_RELA;
11619 break;
11620 case R_NDS32_LO12S2_SP_RELA:
11621 range_l = sdata_range[0][0];
11622 range_h = sdata_range[0][1];
11623 reloc = R_NDS32_SDA12S2_SP_RELA;
11624 break;
11625 default:
11626 return;
11627 }
11628
11629 /* There are range_h and range_l because linker has to promise
11630 all sections move cross one page together. */
11631 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
11632 || (local_sda > access_addr && (local_sda - access_addr) <= range_l)
11633 || (h && strcmp (h->root.root.string, FP_BASE_NAME) == 0))
11634 {
11635 if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP)
11636 {
11637 /* Maybe we should add R_NDS32_INSN16 reloc type here
11638 or manually do some optimization. sethi can't be
11639 eliminated when updating $gp so the relative ori
11640 needs to be preserved. */
11641 return;
11642 }
11643 if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info),
11644 &insn))
11645 return;
11646 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11647 bfd_putb32 (insn, contents + laddr);
11648
11649 irelfn = find_relocs_at_address (irel, internal_relocs, irelend,
11650 R_NDS32_INSN16);
11651 /* SDA17 must keep INSN16 for converting fp_as_gp. */
11652 if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA)
11653 irelfn->r_info =
11654 ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE);
11655
11656 }
11657 }
11658 return;
11659 }
11660
11661 /* Relax PTR relocation for nds32_elf_relax_section. */
11662
11663 static bfd_boolean
11664 nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel,
11665 Elf_Internal_Rela *internal_relocs, int *insn_len,
11666 int *seq_len, bfd_byte *contents)
11667 {
11668 Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel;
11669
11670 irelend = internal_relocs + sec->reloc_count;
11671
11672 re_irel =
11673 find_relocs_at_address_addr (irel, internal_relocs, irelend,
11674 R_NDS32_PTR_RESOLVED, irel->r_addend);
11675
11676 if (re_irel == irelend)
11677 {
11678 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_PTR",
11679 (uint64_t) irel->r_offset);
11680 return FALSE;
11681 }
11682
11683 if (re_irel->r_addend != 1)
11684 return FALSE;
11685
11686 /* Pointed target is relaxed and no longer needs this void *,
11687 change the type to NONE. */
11688 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11689
11690 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11691 not exist, it means only count 1 and remove it directly. */
11692 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11693 count_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11694 R_NDS32_PTR_COUNT);
11695 ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11696 R_NDS32_PTR);
11697 if (count_irel != irelend)
11698 {
11699 if (--count_irel->r_addend > 0)
11700 return FALSE;
11701 }
11702
11703 if (ptr_irel != irelend)
11704 return FALSE;
11705
11706 /* If the PTR_COUNT is already 0, remove current instruction. */
11707 *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset);
11708 *insn_len = 0;
11709 return TRUE;
11710 }
11711
11712 /* Relax LWC relocation for nds32_elf_relax_section. */
11713
11714 static void
11715 nds32_elf_relax_flsi (struct bfd_link_info *link_info, bfd *abfd,
11716 asection *sec, Elf_Internal_Rela *irel,
11717 Elf_Internal_Rela *internal_relocs,
11718 bfd_byte *contents, Elf_Internal_Sym *isymbuf,
11719 Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again)
11720 {
11721 /* Pattern:
11722 sethi ra, hi20(symbol) ; HI20/LOADSTORE
11723 ori ra, ra, lo12(symbol) ; LO12S0/PTR/PTR/.../INSN16
11724 flsi fsa, [ra + offset1] ; LSI/PTR_RESOLVED/INSN16
11725 flsi fsb, [ra + offset2] ; LSI/PTR_RESOLVED/INSN16
11726 ... */
11727
11728 uint32_t insn;
11729 bfd_vma local_sda, laddr;
11730 unsigned long reloc;
11731 bfd_vma access_addr, flsi_offset;
11732 bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */
11733 Elf_Internal_Rela *irelend, *re_irel;
11734 unsigned int opcode;
11735
11736 irelend = internal_relocs + sec->reloc_count;
11737 laddr = irel->r_offset;
11738 insn = bfd_getb32 (contents + laddr);
11739
11740 if ((insn & 0x80000000) || !is_sda_access_insn (insn))
11741 return;
11742
11743 /* Can not do relaxation for bi format. */
11744 if ((insn & 0x1000))
11745 return;
11746
11747 /* Only deal with flsi, fssi, fldi, fsdi, so far. */
11748 opcode = N32_OP6 (insn);
11749 if ((opcode == N32_OP6_LWC) || (opcode == N32_OP6_SWC))
11750 reloc = R_NDS32_SDA12S2_SP_RELA;
11751 else if ((opcode == N32_OP6_LDC) || (opcode == N32_OP6_SDC))
11752 reloc = R_NDS32_SDA12S2_DP_RELA;
11753 else
11754 return;
11755
11756 re_irel = find_relocs_at_address (irel, internal_relocs, irelend,
11757 R_NDS32_PTR_RESOLVED);
11758 if (re_irel == irelend)
11759 {
11760 _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LSI",
11761 (uint64_t) irel->r_offset);
11762 return;
11763 }
11764
11765 /* For SDA base relative relaxation. */
11766 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
11767 &local_sda, FALSE);
11768 access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
11769 flsi_offset = (insn & 0xfff) << 2;
11770 access_addr += flsi_offset;
11771 range_l = sdata_range[0][0];
11772 range_h = sdata_range[0][1];
11773
11774 if ((local_sda <= access_addr && (access_addr - local_sda) < range_h)
11775 || (local_sda > access_addr && (local_sda - access_addr) <= range_l))
11776 {
11777 /* Turn flsi instruction into sda access format. */
11778 insn = (insn & 0x7ff07000) | (REG_GP << 15);
11779
11780 /* Add relocation type to flsi. */
11781 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc);
11782 irel->r_addend += flsi_offset;
11783 bfd_putb32 (insn, contents + re_irel->r_offset);
11784
11785 re_irel->r_addend |= 1;
11786 *again = TRUE;
11787 }
11788 }
11789
11790 static bfd_boolean
11791 nds32_relax_adjust_label (bfd *abfd, asection *sec,
11792 Elf_Internal_Rela *internal_relocs,
11793 bfd_byte *contents,
11794 nds32_elf_blank_t **relax_blank_list,
11795 int optimize, int opt_size)
11796 {
11797 /* This code block is used to adjust 4-byte alignment by relax a pair
11798 of instruction a time.
11799
11800 It recognizes three types of relocations.
11801 1. R_NDS32_LABEL - a alignment.
11802 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11803 3. is_16bit_NOP () - remove a 16-bit instruction. */
11804
11805 /* TODO: It seems currently implementation only support 4-byte alignment.
11806 We should handle any-alignment. */
11807
11808 Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel;
11809 Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL;
11810 Elf_Internal_Rela rel_temp;
11811 Elf_Internal_Rela *irelend;
11812 bfd_vma address;
11813 uint16_t insn16;
11814
11815 /* Checking for branch relaxation relies on the relocations to
11816 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11817 nds32_insertion_sort (internal_relocs, sec->reloc_count,
11818 sizeof (Elf_Internal_Rela), compar_reloc);
11819
11820 irelend = internal_relocs + sec->reloc_count;
11821
11822 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11823 /* FIXME: Can we generate the right order in assembler?
11824 So we don't have to swapping them here. */
11825
11826 for (label_rel = internal_relocs, insn_rel = internal_relocs;
11827 label_rel < irelend; label_rel++)
11828 {
11829 if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL)
11830 continue;
11831
11832 /* Find the first reloc has the same offset with label_rel. */
11833 while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset)
11834 insn_rel++;
11835
11836 for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset;
11837 insn_rel++)
11838 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11839 address. */
11840 if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16)
11841 break;
11842
11843 if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset
11844 && insn_rel < label_rel)
11845 {
11846 /* Swap the two reloc if the R_NDS32_INSN16 is
11847 before R_NDS32_LABEL. */
11848 memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela));
11849 memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela));
11850 memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela));
11851 }
11852 }
11853
11854 label_rel = NULL;
11855 insn_rel = NULL;
11856 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11857 or higher, remove other R_NDS32_LABEL with lower alignment.
11858 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11859 then the R_NDS32_LABEL sequence is broke. */
11860 for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++)
11861 {
11862 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL)
11863 {
11864 if (label_rel == NULL)
11865 {
11866 if (tmp_rel->r_addend < 2)
11867 label_rel = tmp_rel;
11868 continue;
11869 }
11870 else if (tmp_rel->r_addend > 1)
11871 {
11872 /* Remove all LABEL relocation from label_rel to tmp_rel
11873 including relocations with same offset as tmp_rel. */
11874 for (tmp2_rel = label_rel; tmp2_rel < tmp_rel; tmp2_rel++)
11875 {
11876 if (tmp2_rel->r_offset == tmp_rel->r_offset)
11877 break;
11878
11879 if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL
11880 && tmp2_rel->r_addend < 2)
11881 tmp2_rel->r_info =
11882 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info),
11883 R_NDS32_NONE);
11884 }
11885 label_rel = NULL;
11886 }
11887 }
11888 else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel)
11889 {
11890 /* A new INSN16 which can be converted, so clear label_rel. */
11891 if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs,
11892 irelend, &insn16)
11893 || is_16bit_NOP (abfd, sec, tmp_rel))
11894 label_rel = NULL;
11895 }
11896 }
11897
11898 label_rel = NULL;
11899 insn_rel = NULL;
11900 /* Optimized for speed and nothing has not been relaxed.
11901 It's time to align labels.
11902 We may convert a 16-bit instruction right before a label to
11903 32-bit, in order to align the label if necessary
11904 all reloc entries has been sorted by r_offset. */
11905 for (irel = internal_relocs;
11906 irel < irelend && irel->r_offset < sec->size; irel++)
11907 {
11908 if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16
11909 && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL)
11910 continue;
11911
11912 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16)
11913 {
11914 /* A new INSN16 found, resize the old one. */
11915 if (is_convert_32_to_16
11916 (abfd, sec, irel, internal_relocs, irelend, &insn16)
11917 || is_16bit_NOP (abfd, sec, irel))
11918 {
11919 if (insn_rel)
11920 {
11921 /* Previous INSN16 reloc exists, reduce its
11922 size to 16-bit. */
11923 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
11924 irelend, &insn16))
11925 {
11926 nds32_elf_write_16 (abfd, contents, insn_rel,
11927 internal_relocs, irelend, insn16);
11928
11929 if (!insert_nds32_elf_blank_recalc_total
11930 (relax_blank_list, insn_rel->r_offset + 2, 2))
11931 return FALSE;
11932 }
11933 else if (is_16bit_NOP (abfd, sec, insn_rel))
11934 {
11935 if (!insert_nds32_elf_blank_recalc_total
11936 (relax_blank_list, insn_rel->r_offset, 2))
11937 return FALSE;
11938 }
11939 insn_rel->r_info =
11940 ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE);
11941 }
11942 /* Save the new one for later use. */
11943 insn_rel = irel;
11944 }
11945 else
11946 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
11947 R_NDS32_NONE);
11948 }
11949 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL)
11950 {
11951 /* Search for label. */
11952 int force_relax = 0;
11953
11954 /* Label on 16-bit instruction or optimization
11955 needless, just reset this reloc. */
11956 insn16 = bfd_getb16 (contents + irel->r_offset);
11957 if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000)))
11958 {
11959 irel->r_info =
11960 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE);
11961 continue;
11962 }
11963
11964 address =
11965 irel->r_offset - get_nds32_elf_blank_total (relax_blank_list,
11966 irel->r_offset, 1);
11967
11968 if (!insn_rel)
11969 {
11970 /* Check if there is case which can not be aligned. */
11971 if (irel->r_addend == 2 && address & 0x2)
11972 return FALSE;
11973 continue;
11974 }
11975
11976 /* Try to align this label. */
11977
11978 if ((irel->r_addend & 0x1f) < 2)
11979 {
11980 /* Check if there is a INSN16 at the same address.
11981 Label_rel always seats before insn_rel after
11982 our sort. */
11983
11984 /* Search for INSN16 at LABEL location. If INSN16 is at
11985 same location and this LABEL alignment is lower than 2,
11986 the INSN16 can be converted to 2-byte. */
11987 for (tmp_rel = irel;
11988 tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset;
11989 tmp_rel++)
11990 {
11991 if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16
11992 && (is_convert_32_to_16
11993 (abfd, sec, tmp_rel, internal_relocs,
11994 irelend, &insn16)
11995 || is_16bit_NOP (abfd, sec, tmp_rel)))
11996 {
11997 force_relax = 1;
11998 break;
11999 }
12000 }
12001 }
12002
12003 if (force_relax || irel->r_addend == 1 || address & 0x2)
12004 {
12005 /* Label not aligned. */
12006 /* Previous reloc exists, reduce its size to 16-bit. */
12007 if (is_convert_32_to_16 (abfd, sec, insn_rel,
12008 internal_relocs, irelend, &insn16))
12009 {
12010 nds32_elf_write_16 (abfd, contents, insn_rel,
12011 internal_relocs, irelend, insn16);
12012
12013 if (!insert_nds32_elf_blank_recalc_total
12014 (relax_blank_list, insn_rel->r_offset + 2, 2))
12015 return FALSE;
12016 }
12017 else if (is_16bit_NOP (abfd, sec, insn_rel))
12018 {
12019 if (!insert_nds32_elf_blank_recalc_total
12020 (relax_blank_list, insn_rel->r_offset, 2))
12021 return FALSE;
12022 }
12023
12024 }
12025 /* INSN16 reloc is used. */
12026 insn_rel = NULL;
12027 }
12028 }
12029
12030 address =
12031 sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0);
12032 if (insn_rel && (address & 0x2 || opt_size))
12033 {
12034 if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs,
12035 irelend, &insn16))
12036 {
12037 nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs,
12038 irelend, insn16);
12039 if (!insert_nds32_elf_blank_recalc_total
12040 (relax_blank_list, insn_rel->r_offset + 2, 2))
12041 return FALSE;
12042 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
12043 R_NDS32_NONE);
12044 }
12045 else if (is_16bit_NOP (abfd, sec, insn_rel))
12046 {
12047 if (!insert_nds32_elf_blank_recalc_total
12048 (relax_blank_list, insn_rel->r_offset, 2))
12049 return FALSE;
12050 insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info),
12051 R_NDS32_NONE);
12052 }
12053 }
12054 insn_rel = NULL;
12055 return TRUE;
12056 }
12057
12058 static bfd_boolean
12059 nds32_elf_relax_section (bfd *abfd, asection *sec,
12060 struct bfd_link_info *link_info, bfd_boolean *again)
12061 {
12062 nds32_elf_blank_t *relax_blank_list = NULL;
12063 Elf_Internal_Shdr *symtab_hdr;
12064 Elf_Internal_Rela *internal_relocs;
12065 Elf_Internal_Rela *irel;
12066 Elf_Internal_Rela *irelend;
12067 Elf_Internal_Sym *isymbuf = NULL;
12068 bfd_byte *contents = NULL;
12069 bfd_boolean result = TRUE;
12070 int optimize = 0;
12071 int opt_size = 0;
12072 uint32_t insn;
12073 uint16_t insn16;
12074
12075 /* Target dependnet option. */
12076 struct elf_nds32_link_hash_table *table;
12077 int load_store_relax;
12078
12079 relax_blank_list = NULL;
12080
12081 *again = FALSE;
12082
12083 /* Nothing to do for
12084 * relocatable link or
12085 * non-relocatable section or
12086 * non-code section or
12087 * empty content or
12088 * no reloc entry. */
12089 if (bfd_link_relocatable (link_info)
12090 || (sec->flags & SEC_RELOC) == 0
12091 || (sec->flags & SEC_EXCLUDE) != 0
12092 || (sec->flags & SEC_CODE) == 0
12093 || sec->size == 0
12094 || sec->reloc_count == 0)
12095 return TRUE;
12096
12097 /* 09.12.11 Workaround. */
12098 /* We have to adjust align for R_NDS32_LABEL if needed.
12099 The adjust approach only can fix 2-byte align once. */
12100 if (sec->alignment_power > 2)
12101 return TRUE;
12102
12103 /* Do TLS model conversion once at first. */
12104 nds32_elf_unify_tls_model (abfd, sec, contents, link_info);
12105
12106 /* The optimization type to do. */
12107
12108 table = nds32_elf_hash_table (link_info);
12109
12110 /* Save the first section for abs symbol relaxation.
12111 This is used for checking gp relaxation in the
12112 nds32_elf_relax_loadstore and nds32_elf_relax_lo12. */
12113 nds32_elf_relax_guard (NULL, 0, sec, NULL, again, TRUE,
12114 table, NULL, NULL);
12115
12116 /* The begining of general relaxation. */
12117
12118 if (is_SDA_BASE_set == 0)
12119 {
12120 bfd_vma gp;
12121 is_SDA_BASE_set = 1;
12122 nds32_elf_final_sda_base (sec->output_section->owner, link_info,
12123 &gp, FALSE);
12124 relax_range_measurement (abfd);
12125 }
12126
12127 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12128 /* Relocations MUST be kept in memory, because relaxation adjust them. */
12129 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
12130 TRUE /* keep_memory */);
12131 if (internal_relocs == NULL)
12132 goto error_return;
12133
12134 irelend = internal_relocs + sec->reloc_count;
12135 irel = find_relocs_at_address (internal_relocs, internal_relocs,
12136 irelend, R_NDS32_RELAX_ENTRY);
12137
12138 if (irel == irelend)
12139 return TRUE;
12140
12141 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY)
12142 {
12143 if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG)
12144 return TRUE;
12145
12146 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG)
12147 optimize = 1;
12148
12149 if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG)
12150 opt_size = 1;
12151 }
12152
12153 load_store_relax = table->load_store_relax;
12154
12155 /* Get symbol table and section content. */
12156 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12157 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12158 goto error_return;
12159
12160 /* Do relax loop only when finalize is not done.
12161 Take care of relaxable relocs except INSN16. */
12162 for (irel = internal_relocs; irel < irelend; irel++)
12163 {
12164 int seq_len; /* Original length of instruction sequence. */
12165 int insn_len = 0; /* Final length of instruction sequence. */
12166 bfd_boolean removed;
12167
12168 insn = 0;
12169 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL
12170 && (irel->r_addend & 0x1f) >= 2)
12171 optimize = 1;
12172
12173 /* Relocation Types
12174 R_NDS32_LONGCALL1 53
12175 R_NDS32_LONGCALL2 54
12176 R_NDS32_LONGCALL3 55
12177 R_NDS32_LONGJUMP1 56
12178 R_NDS32_LONGJUMP2 57
12179 R_NDS32_LONGJUMP3 58
12180 R_NDS32_LOADSTORE 59 */
12181 if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1
12182 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE)
12183 seq_len = GET_SEQ_LEN (irel->r_addend);
12184
12185 /* Relocation Types
12186 R_NDS32_LONGCALL4 107
12187 R_NDS32_LONGCALL5 108
12188 R_NDS32_LONGCALL6 109
12189 R_NDS32_LONGJUMP4 110
12190 R_NDS32_LONGJUMP5 111
12191 R_NDS32_LONGJUMP6 112
12192 R_NDS32_LONGJUMP7 113 */
12193 else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4
12194 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7)
12195 seq_len = 4;
12196
12197 /* Relocation Types
12198 R_NDS32_LO12S0_RELA 30
12199 R_NDS32_LO12S1_RELA 29
12200 R_NDS32_LO12S2_RELA 28
12201 R_NDS32_LO12S2_SP_RELA 71
12202 R_NDS32_LO12S2_DP_RELA 70
12203 R_NDS32_GOT_LO12 46
12204 R_NDS32_GOTOFF_LO12 50
12205 R_NDS32_PLTREL_LO12 65
12206 R_NDS32_PLT_GOTREL_LO12 67
12207 R_NDS32_17IFC_PCREL_RELA 96
12208 R_NDS32_GOT_SUFF 193
12209 R_NDS32_GOTOFF_SUFF 194
12210 R_NDS32_PLT_GOT_SUFF 195
12211 R_NDS32_MULCALL_SUFF 196
12212 R_NDS32_PTR 197 */
12213 else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA
12214 && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA)
12215 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA
12216 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA
12217 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12
12218 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12
12219 || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12
12220 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12
12221 || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12
12222 || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF
12223 && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR)
12224 || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12225 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12
12226 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD
12227 || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS
12228 || ELF32_R_TYPE (irel->r_info) == R_NDS32_LSI)
12229 seq_len = 0;
12230 else
12231 continue;
12232
12233 insn_len = seq_len;
12234 removed = FALSE;
12235
12236 switch (ELF32_R_TYPE (irel->r_info))
12237 {
12238 case R_NDS32_LONGCALL1:
12239 removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs,
12240 &insn_len, contents, isymbuf,
12241 symtab_hdr);
12242 break;
12243 case R_NDS32_LONGCALL2:
12244 removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs,
12245 &insn_len, contents, isymbuf,
12246 symtab_hdr);
12247 break;
12248 case R_NDS32_LONGCALL3:
12249 removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs,
12250 &insn_len, contents, isymbuf,
12251 symtab_hdr);
12252 break;
12253 case R_NDS32_LONGJUMP1:
12254 removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs,
12255 &insn_len, contents, isymbuf,
12256 symtab_hdr);
12257 break;
12258 case R_NDS32_LONGJUMP2:
12259 removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs,
12260 &insn_len, contents, isymbuf,
12261 symtab_hdr);
12262 break;
12263 case R_NDS32_LONGJUMP3:
12264 removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs,
12265 &insn_len, contents, isymbuf,
12266 symtab_hdr);
12267 break;
12268 case R_NDS32_LONGCALL4:
12269 removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs,
12270 &insn_len, contents, isymbuf,
12271 symtab_hdr);
12272 break;
12273 case R_NDS32_LONGCALL5:
12274 removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs,
12275 &insn_len, contents, isymbuf,
12276 symtab_hdr);
12277 break;
12278 case R_NDS32_LONGCALL6:
12279 removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs,
12280 &insn_len, contents, isymbuf,
12281 symtab_hdr);
12282 break;
12283 case R_NDS32_LONGJUMP4:
12284 removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs,
12285 &insn_len, contents, isymbuf,
12286 symtab_hdr);
12287 break;
12288 case R_NDS32_LONGJUMP5:
12289 removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs,
12290 &insn_len, &seq_len, contents,
12291 isymbuf, symtab_hdr);
12292 break;
12293 case R_NDS32_LONGJUMP6:
12294 removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs,
12295 &insn_len, &seq_len, contents,
12296 isymbuf, symtab_hdr);
12297 break;
12298 case R_NDS32_LONGJUMP7:
12299 removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs,
12300 &insn_len, &seq_len, contents,
12301 isymbuf, symtab_hdr);
12302 break;
12303 case R_NDS32_LOADSTORE:
12304 removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel,
12305 internal_relocs, &insn_len,
12306 contents, isymbuf, symtab_hdr,
12307 load_store_relax, table);
12308 break;
12309 case R_NDS32_LO12S0_RELA:
12310 case R_NDS32_LO12S1_RELA:
12311 case R_NDS32_LO12S2_RELA:
12312 case R_NDS32_LO12S2_DP_RELA:
12313 case R_NDS32_LO12S2_SP_RELA:
12314 /* Relax for low part. */
12315 nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs,
12316 contents, isymbuf, symtab_hdr, table);
12317
12318 /* It is impossible to delete blank, so just continue. */
12319 continue;
12320 case R_NDS32_PTR:
12321 removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs,
12322 &insn_len, &seq_len, contents);
12323 break;
12324 case R_NDS32_LSI:
12325 nds32_elf_relax_flsi (link_info, abfd, sec, irel, internal_relocs,
12326 contents, isymbuf, symtab_hdr, again);
12327 continue;
12328 case R_NDS32_GOT_LO12:
12329 case R_NDS32_GOTOFF_LO12:
12330 case R_NDS32_PLTREL_LO12:
12331 case R_NDS32_PLT_GOTREL_LO12:
12332 case R_NDS32_GOTPC_LO12:
12333 case R_NDS32_TLS_LE_LO12:
12334 case R_NDS32_TLS_LE_ADD:
12335 case R_NDS32_TLS_LE_LS:
12336 case R_NDS32_PLT_GOT_SUFF:
12337 case R_NDS32_GOT_SUFF:
12338 case R_NDS32_GOTOFF_SUFF:
12339 continue;
12340 default:
12341 continue;
12342 }
12343
12344 if (removed && seq_len - insn_len > 0)
12345 {
12346 if (!insert_nds32_elf_blank
12347 (&relax_blank_list, irel->r_offset + insn_len,
12348 seq_len - insn_len))
12349 goto error_return;
12350 *again = TRUE;
12351 }
12352 }
12353
12354 calc_nds32_blank_total (relax_blank_list);
12355
12356 if (table->relax_fp_as_gp)
12357 {
12358 if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs,
12359 irelend, isymbuf))
12360 goto error_return;
12361
12362 if (!*again)
12363 {
12364 if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs,
12365 irelend))
12366 goto error_return;
12367 }
12368 }
12369
12370 if (!*again)
12371 {
12372 if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents,
12373 &relax_blank_list, optimize, opt_size))
12374 goto error_return;
12375 }
12376
12377 /* It doesn't matter optimize_for_space_no_align anymore.
12378 If object file is assembled with flag '-Os',
12379 the we don't adjust jump-destination on 4-byte boundary. */
12380
12381 if (relax_blank_list)
12382 {
12383 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
12384 relax_blank_list = NULL;
12385 }
12386
12387 if (!*again)
12388 {
12389 /* Closing the section, so we don't relax it anymore. */
12390 bfd_vma sec_size_align;
12391 Elf_Internal_Rela *tmp_rel;
12392
12393 /* Pad to alignment boundary. Only handle current section alignment. */
12394 sec_size_align = (sec->size + (~((-1U) << sec->alignment_power)))
12395 & ((-1U) << sec->alignment_power);
12396 if ((sec_size_align - sec->size) & 0x2)
12397 {
12398 insn16 = NDS32_NOP16;
12399 bfd_putb16 (insn16, contents + sec->size);
12400 sec->size += 2;
12401 }
12402
12403 while (sec_size_align != sec->size)
12404 {
12405 insn = NDS32_NOP32;
12406 bfd_putb32 (insn, contents + sec->size);
12407 sec->size += 4;
12408 }
12409
12410 tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs,
12411 irelend, R_NDS32_RELAX_ENTRY);
12412 if (tmp_rel != irelend)
12413 tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG;
12414
12415 clean_nds32_elf_blank ();
12416 }
12417
12418 finish:
12419 if (elf_section_data (sec)->relocs != internal_relocs)
12420 free (internal_relocs);
12421
12422 if (elf_section_data (sec)->this_hdr.contents != contents)
12423 free (contents);
12424
12425 if (symtab_hdr->contents != (bfd_byte *) isymbuf)
12426 free (isymbuf);
12427
12428 return result;
12429
12430 error_return:
12431 result = FALSE;
12432 goto finish;
12433 }
12434
12435 static struct bfd_elf_special_section const nds32_elf_special_sections[] =
12436 {
12437 {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE},
12438 {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE},
12439 {NULL, 0, 0, 0, 0}
12440 };
12441
12442 static bfd_boolean
12443 nds32_elf_section_flags (const Elf_Internal_Shdr *hdr)
12444 {
12445 const char *name = hdr->bfd_section->name;
12446
12447 if (strncmp (name, ".sbss", 5) == 0
12448 || strncmp (name, ".sdata", 6) == 0)
12449 hdr->bfd_section->flags |= SEC_SMALL_DATA;
12450
12451 return TRUE;
12452 }
12453
12454 static bfd_boolean
12455 nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
12456 struct bfd_link_info *info,
12457 void *finfo ATTRIBUTE_UNUSED,
12458 bfd_boolean (*func) (void *, const char *,
12459 Elf_Internal_Sym *,
12460 asection *,
12461 struct elf_link_hash_entry *)
12462 ATTRIBUTE_UNUSED)
12463 {
12464 FILE *sym_ld_script = NULL;
12465 struct elf_nds32_link_hash_table *table;
12466
12467 table = nds32_elf_hash_table (info);
12468 sym_ld_script = table->sym_ld_script;
12469
12470 if (check_start_export_sym)
12471 fprintf (sym_ld_script, "}\n");
12472
12473 return TRUE;
12474 }
12475
12476 static enum elf_reloc_type_class
12477 nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
12478 const asection *rel_sec ATTRIBUTE_UNUSED,
12479 const Elf_Internal_Rela *rela)
12480 {
12481 switch ((int) ELF32_R_TYPE (rela->r_info))
12482 {
12483 case R_NDS32_RELATIVE:
12484 return reloc_class_relative;
12485 case R_NDS32_JMP_SLOT:
12486 return reloc_class_plt;
12487 case R_NDS32_COPY:
12488 return reloc_class_copy;
12489 default:
12490 return reloc_class_normal;
12491 }
12492 }
12493
12494 /* Put target dependent option into info hash table. */
12495 void
12496 bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info,
12497 int relax_fp_as_gp,
12498 int eliminate_gc_relocs,
12499 FILE * sym_ld_script,
12500 int hyper_relax,
12501 int tls_desc_trampoline,
12502 int load_store_relax)
12503 {
12504 struct elf_nds32_link_hash_table *table;
12505
12506 table = nds32_elf_hash_table (link_info);
12507 if (table == NULL)
12508 return;
12509
12510 table->relax_fp_as_gp = relax_fp_as_gp;
12511 table->eliminate_gc_relocs = eliminate_gc_relocs;
12512 table->sym_ld_script = sym_ld_script;
12513 table->hyper_relax = hyper_relax;
12514 table->tls_desc_trampoline = tls_desc_trampoline;
12515 table ->load_store_relax = load_store_relax;
12516 }
12517 \f
12518
12519 /* These functions and data-structures are used for fp-as-gp
12520 optimization. */
12521
12522 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12523 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12524 the read-only section and read-write section. */
12525 #define FAG_WINDOW (508 - 32)
12526
12527 /* An nds32_fag represent a gp-relative access.
12528 We find best fp-base by using a sliding window
12529 to find a base address which can cover most gp-access. */
12530 struct nds32_fag
12531 {
12532 struct nds32_fag *next; /* NULL-teminated linked list. */
12533 bfd_vma addr; /* The address of this fag. */
12534 Elf_Internal_Rela **relas; /* The relocations associated with this fag.
12535 It is used for applying FP7U2_FLAG. */
12536 int count; /* How many times this address is referred.
12537 There should be exactly `count' relocations
12538 in relas. */
12539 int relas_capcity; /* The buffer size of relas.
12540 We use an array instead of linked-list,
12541 and realloc is used to adjust buffer size. */
12542 };
12543
12544 static void
12545 nds32_fag_init (struct nds32_fag *head)
12546 {
12547 memset (head, 0, sizeof (struct nds32_fag));
12548 }
12549
12550 static void
12551 nds32_fag_verify (struct nds32_fag *head)
12552 {
12553 struct nds32_fag *iter;
12554 struct nds32_fag *prev;
12555
12556 prev = NULL;
12557 iter = head->next;
12558 while (iter)
12559 {
12560 if (prev && prev->addr >= iter->addr)
12561 puts ("Bug in fp-as-gp insertion.");
12562 prev = iter;
12563 iter = iter->next;
12564 }
12565 }
12566
12567 /* Insert a fag in ascending order.
12568 If a fag of the same address already exists,
12569 they are chained by relas array. */
12570
12571 static void
12572 nds32_fag_insert (struct nds32_fag *head, bfd_vma addr,
12573 Elf_Internal_Rela * rel)
12574 {
12575 struct nds32_fag *iter;
12576 struct nds32_fag *new_fag;
12577 const int INIT_RELAS_CAP = 4;
12578
12579 for (iter = head;
12580 iter->next && iter->next->addr <= addr;
12581 iter = iter->next)
12582 /* Find somewhere to insert. */ ;
12583
12584 /* `iter' will be equal to `head' if the list is empty. */
12585 if (iter != head && iter->addr == addr)
12586 {
12587 /* The address exists in the list.
12588 Insert `rel' into relocation list, relas. */
12589
12590 /* Check whether relas is big enough. */
12591 if (iter->count >= iter->relas_capcity)
12592 {
12593 iter->relas_capcity *= 2;
12594 iter->relas = bfd_realloc
12595 (iter->relas, iter->relas_capcity * sizeof (void *));
12596 }
12597 iter->relas[iter->count++] = rel;
12598 return;
12599 }
12600
12601 /* This is a new address. Create a fag node for it. */
12602 new_fag = bfd_malloc (sizeof (struct nds32_fag));
12603 memset (new_fag, 0, sizeof (*new_fag));
12604 new_fag->addr = addr;
12605 new_fag->count = 1;
12606 new_fag->next = iter->next;
12607 new_fag->relas_capcity = INIT_RELAS_CAP;
12608 new_fag->relas = (Elf_Internal_Rela **)
12609 bfd_malloc (new_fag->relas_capcity * sizeof (void *));
12610 new_fag->relas[0] = rel;
12611 iter->next = new_fag;
12612
12613 nds32_fag_verify (head);
12614 }
12615
12616 static void
12617 nds32_fag_free_list (struct nds32_fag *head)
12618 {
12619 struct nds32_fag *iter;
12620
12621 iter = head->next;
12622 while (iter)
12623 {
12624 struct nds32_fag *tmp = iter;
12625 iter = iter->next;
12626 free (tmp->relas);
12627 tmp->relas = NULL;
12628 free (tmp);
12629 }
12630 }
12631
12632 /* Find the best fp-base address.
12633 The relocation associated with that address is returned,
12634 so we can track the symbol instead of a fixed address.
12635
12636 When relaxation, the address of an datum may change,
12637 because a text section is shrinked, so the data section
12638 moves forward. If the aligments of text and data section
12639 are different, their distance may change too.
12640 Therefore, tracking a fixed address is not appriate. */
12641
12642 static int
12643 nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp)
12644 {
12645 struct nds32_fag *base; /* First fag in the window. */
12646 struct nds32_fag *last; /* First fag outside the window. */
12647 int accu = 0; /* Usage accumulation. */
12648 struct nds32_fag *best; /* Best fag. */
12649 int baccu = 0; /* Best accumulation. */
12650
12651 /* Use first fag for initial, and find the last fag in the window.
12652
12653 In each iteration, we could simply subtract previous fag
12654 and accumulate following fags which are inside the window,
12655 untill we each the end. */
12656
12657 if (head->next == NULL)
12658 {
12659 *bestpp = NULL;
12660 return 0;
12661 }
12662
12663 /* Initialize base. */
12664 base = head->next;
12665 best = base;
12666 for (last = base;
12667 last && last->addr < base->addr + FAG_WINDOW;
12668 last = last->next)
12669 accu += last->count;
12670
12671 baccu = accu;
12672
12673 /* Record the best base in each iteration. */
12674 while (base->next)
12675 {
12676 accu -= base->count;
12677 base = base->next;
12678 /* Account fags in window. */
12679 for (/* Nothing. */;
12680 last && last->addr < base->addr + FAG_WINDOW;
12681 last = last->next)
12682 accu += last->count;
12683
12684 /* A better fp-base? */
12685 if (accu > baccu)
12686 {
12687 best = base;
12688 baccu = accu;
12689 }
12690 }
12691
12692 if (bestpp)
12693 *bestpp = best;
12694 return baccu;
12695 }
12696
12697 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12698 so we can convert it fo fp-relative access later.
12699 `best_fag' is the best fp-base. Only those inside the window
12700 of best_fag is applied the flag. */
12701
12702 static bfd_boolean
12703 nds32_fag_mark_relax (struct bfd_link_info *link_info,
12704 asection *sec, struct nds32_fag *best_fag,
12705 Elf_Internal_Rela *internal_relocs,
12706 Elf_Internal_Rela *irelend)
12707 {
12708 struct nds32_fag *ifag;
12709 bfd_vma best_fpbase, gp;
12710 bfd *output_bfd;
12711
12712 output_bfd = sec->output_section->owner;
12713 nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE);
12714 best_fpbase = best_fag->addr;
12715
12716 if (best_fpbase > gp + sdata_range[1][1]
12717 || best_fpbase < gp - sdata_range[1][0])
12718 return FALSE;
12719
12720 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12721 so we know they can be converted to lwi37.fp. */
12722 for (ifag = best_fag;
12723 ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next)
12724 {
12725 int i;
12726
12727 for (i = 0; i < ifag->count; i++)
12728 {
12729 Elf_Internal_Rela *insn16_rel;
12730 Elf_Internal_Rela *fag_rel;
12731
12732 fag_rel = ifag->relas[i];
12733
12734 /* Only if this is within the WINDOWS, FP7U2_FLAG
12735 is applied. */
12736
12737 insn16_rel = find_relocs_at_address
12738 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12739
12740 if (insn16_rel != irelend)
12741 insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG;
12742 }
12743 }
12744 return TRUE;
12745 }
12746
12747 /* Reset INSN16 to clean fp as gp. */
12748
12749 static void
12750 nds32_fag_unmark_relax (struct nds32_fag *fag,
12751 Elf_Internal_Rela *internal_relocs,
12752 Elf_Internal_Rela *irelend)
12753 {
12754 struct nds32_fag *ifag;
12755 int i;
12756 Elf_Internal_Rela *insn16_rel;
12757 Elf_Internal_Rela *fag_rel;
12758
12759 for (ifag = fag; ifag; ifag = ifag->next)
12760 {
12761 for (i = 0; i < ifag->count; i++)
12762 {
12763 fag_rel = ifag->relas[i];
12764
12765 /* Restore the INSN16 relocation. */
12766 insn16_rel = find_relocs_at_address
12767 (fag_rel, internal_relocs, irelend, R_NDS32_INSN16);
12768
12769 if (insn16_rel != irelend)
12770 insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG;
12771 }
12772 }
12773 }
12774
12775 /* This is the main function of fp-as-gp optimization.
12776 It should be called by relax_section. */
12777
12778 static bfd_boolean
12779 nds32_relax_fp_as_gp (struct bfd_link_info *link_info,
12780 bfd *abfd, asection *sec,
12781 Elf_Internal_Rela *internal_relocs,
12782 Elf_Internal_Rela *irelend,
12783 Elf_Internal_Sym *isymbuf)
12784 {
12785 Elf_Internal_Rela *begin_rel = NULL;
12786 Elf_Internal_Rela *irel;
12787 struct nds32_fag fag_head;
12788 Elf_Internal_Shdr *symtab_hdr;
12789 bfd_byte *contents;
12790 bfd_boolean ifc_inside = FALSE;
12791
12792 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12793
12794 /* Per-function fp-base selection.
12795 1. Create a list for all the gp-relative access.
12796 2. Base on those gp-relative address,
12797 find a fp-base which can cover most access.
12798 3. Use the fp-base for fp-as-gp relaxation.
12799
12800 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12801 we should
12802 1. delete the `la $fp, _FP_BASE_' instruction and
12803 2. not convert lwi.gp to lwi37.fp.
12804
12805 To delete the _FP_BASE_ instruction, we simply apply
12806 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12807
12808 To suppress the conversion, we simply NOT to apply
12809 R_NDS32_INSN16_FP7U2_FLAG flag. */
12810
12811 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12812
12813 if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)
12814 || !nds32_get_local_syms (abfd, sec, &isymbuf))
12815 return FALSE;
12816
12817 /* Check whether it is worth for fp-as-gp optimization,
12818 i.e., at least 3 gp-load.
12819
12820 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12821 apply this optimization. */
12822
12823 for (irel = internal_relocs; irel < irelend; irel++)
12824 {
12825 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12826 One we enter the begin of the region, we track all the LW/ST
12827 instructions, so when we leave the region, we try to find
12828 the best fp-base address for those LW/ST instructions. */
12829
12830 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12831 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12832 {
12833 /* Begin of the region. */
12834 if (begin_rel)
12835 /* xgettext:c-format */
12836 _bfd_error_handler (_("%pB: nested OMIT_FP in %pA"), abfd, sec);
12837
12838 begin_rel = irel;
12839 nds32_fag_init (&fag_head);
12840 ifc_inside = FALSE;
12841 }
12842 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12843 && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG))
12844 {
12845 int accu;
12846 struct nds32_fag *best_fag, *tmp_fag;
12847 int dist;
12848
12849 /* End of the region.
12850 Check whether it is worth to do fp-as-gp. */
12851
12852 if (begin_rel == NULL)
12853 {
12854 /* xgettext:c-format */
12855 _bfd_error_handler (_("%pB: unmatched OMIT_FP in %pA"),
12856 abfd, sec);
12857 continue;
12858 }
12859
12860 accu = nds32_fag_find_base (&fag_head, &best_fag);
12861
12862 /* Clean FP7U2_FLAG because they may set ever. */
12863 tmp_fag = fag_head.next;
12864 nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend);
12865
12866 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12867 if (accu < FAG_THRESHOLD
12868 || !nds32_fag_mark_relax (link_info, sec, best_fag,
12869 internal_relocs, irelend))
12870 {
12871 /* Not worth to do fp-as-gp. */
12872 begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12873 begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12874 irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG;
12875 irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG;
12876 nds32_fag_free_list (&fag_head);
12877 begin_rel = NULL;
12878 continue;
12879 }
12880
12881 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12882 so we use it to record the distance to the reloction of best
12883 fp-base. */
12884 dist = best_fag->relas[0] - begin_rel;
12885 BFD_ASSERT (dist > 0 && dist < 0xffffff);
12886 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12887 relocation. And get the base value when relocating. */
12888 begin_rel->r_addend &= (0x1 << 16) - 1;
12889 begin_rel->r_addend |= dist << 16;
12890
12891 nds32_fag_free_list (&fag_head);
12892 begin_rel = NULL;
12893 }
12894
12895 if (begin_rel == NULL || ifc_inside)
12896 /* Skip if we are not in the region of fp-as-gp. */
12897 continue;
12898
12899 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA
12900 || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA)
12901 {
12902 bfd_vma addr;
12903 uint32_t insn;
12904
12905 /* A gp-relative access is found. Insert it to the fag-list. */
12906
12907 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12908 insn = bfd_getb32 (contents + irel->r_offset);
12909 if (!N32_IS_RT3 (insn))
12910 continue;
12911
12912 addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr);
12913 nds32_fag_insert (&fag_head, addr, irel);
12914 }
12915 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA)
12916 {
12917 begin_rel = NULL;
12918 }
12919 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA
12920 || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA)
12921 {
12922 /* Suppress fp as gp when encounter ifc. */
12923 ifc_inside = TRUE;
12924 }
12925 }
12926
12927 return TRUE;
12928 }
12929
12930 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12931
12932 static bfd_boolean
12933 nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec,
12934 Elf_Internal_Rela *internal_relocs,
12935 Elf_Internal_Rela *irelend)
12936 {
12937 Elf_Internal_Rela *irel;
12938 Elf_Internal_Shdr *symtab_hdr;
12939 bfd_byte *contents = NULL;
12940 nds32_elf_blank_t *relax_blank_list = NULL;
12941 bfd_boolean result = TRUE;
12942 bfd_boolean unused_region = FALSE;
12943
12944 /*
12945 NOTE: Disable fp-as-gp if we encounter ifcall relocations:
12946 R_NDS32_17IFC_PCREL_RELA
12947 R_NDS32_10IFCU_PCREL_RELA. */
12948
12949 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
12950 nds32_get_section_contents (abfd, sec, &contents, TRUE);
12951
12952 for (irel = internal_relocs; irel < irelend; irel++)
12953 {
12954 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12955 we marked to in previous pass.
12956 DO NOT scan relocations again, since we've alreadly decided it
12957 and set the flag. */
12958 const char *syname;
12959 int syndx;
12960 uint32_t insn;
12961
12962 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN
12963 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12964 unused_region = TRUE;
12965 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END
12966 && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG))
12967 unused_region = FALSE;
12968
12969 /* We're not in the region. */
12970 if (!unused_region)
12971 continue;
12972
12973 /* _FP_BASE_ must be a GLOBAL symbol. */
12974 syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
12975 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
12976 continue;
12977
12978 /* The symbol name must be _FP_BASE_. */
12979 syname = elf_sym_hashes (abfd)[syndx]->root.root.string;
12980 if (strcmp (syname, FP_BASE_NAME) != 0)
12981 continue;
12982
12983 if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA)
12984 {
12985 /* addi.gp $fp, -256 */
12986 insn = bfd_getb32 (contents + irel->r_offset);
12987 if (insn != INSN_ADDIGP_TO_FP)
12988 continue;
12989 }
12990 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA)
12991 {
12992 /* addi $fp, $gp, -256 */
12993 insn = bfd_getb32 (contents + irel->r_offset);
12994 if (insn != INSN_ADDI_GP_TO_FP)
12995 continue;
12996 }
12997 else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA)
12998 {
12999 /* movi $fp, FP_BASE */
13000 insn = bfd_getb32 (contents + irel->r_offset);
13001 if (insn != INSN_MOVI_TO_FP)
13002 continue;
13003 }
13004 else
13005 continue;
13006
13007 /* We got here because a FP_BASE instruction is found. */
13008 if (!insert_nds32_elf_blank_recalc_total
13009 (&relax_blank_list, irel->r_offset, 4))
13010 goto error_return;
13011 }
13012
13013 finish:
13014 if (relax_blank_list)
13015 {
13016 nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list);
13017 relax_blank_list = NULL;
13018 }
13019 return result;
13020
13021 error_return:
13022 result = FALSE;
13023 goto finish;
13024 }
13025
13026 /* This is a version of bfd_generic_get_relocated_section_contents.
13027 We need this variety because relaxation will modify the dwarf
13028 infomation. When there is undefined symbol reference error mesage,
13029 linker need to dump line number where the symbol be used. However
13030 the address is be relaxed, it can not get the original dwarf contents.
13031 The variety only modify function call for reading in the section. */
13032
13033 static bfd_byte *
13034 nds32_elf_get_relocated_section_contents (bfd *abfd,
13035 struct bfd_link_info *link_info,
13036 struct bfd_link_order *link_order,
13037 bfd_byte *data,
13038 bfd_boolean relocatable,
13039 asymbol **symbols)
13040 {
13041 bfd *input_bfd = link_order->u.indirect.section->owner;
13042 asection *input_section = link_order->u.indirect.section;
13043 long reloc_size;
13044 arelent **reloc_vector;
13045 long reloc_count;
13046
13047 reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
13048 if (reloc_size < 0)
13049 return NULL;
13050
13051 /* Read in the section. */
13052 if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE))
13053 return NULL;
13054
13055 if (reloc_size == 0)
13056 return data;
13057
13058 reloc_vector = (arelent **) bfd_malloc (reloc_size);
13059 if (reloc_vector == NULL)
13060 return NULL;
13061
13062 reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
13063 reloc_vector, symbols);
13064 if (reloc_count < 0)
13065 goto error_return;
13066
13067 if (reloc_count > 0)
13068 {
13069 arelent **parent;
13070 for (parent = reloc_vector; *parent != NULL; parent++)
13071 {
13072 char *error_message = NULL;
13073 asymbol *symbol;
13074 bfd_reloc_status_type r;
13075
13076 symbol = *(*parent)->sym_ptr_ptr;
13077 if (symbol->section && discarded_section (symbol->section))
13078 {
13079 bfd_vma off;
13080 static reloc_howto_type none_howto
13081 = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL,
13082 "unused", FALSE, 0, 0, FALSE);
13083
13084 off = (*parent)->address * OCTETS_PER_BYTE (input_bfd,
13085 input_section);
13086 _bfd_clear_contents ((*parent)->howto, input_bfd,
13087 input_section, data, off);
13088 (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
13089 (*parent)->addend = 0;
13090 (*parent)->howto = &none_howto;
13091 r = bfd_reloc_ok;
13092 }
13093 else
13094 r = bfd_perform_relocation (input_bfd, *parent, data,
13095 input_section,
13096 relocatable ? abfd : NULL,
13097 &error_message);
13098
13099 if (relocatable)
13100 {
13101 asection *os = input_section->output_section;
13102
13103 /* A partial link, so keep the relocs. */
13104 os->orelocation[os->reloc_count] = *parent;
13105 os->reloc_count++;
13106 }
13107
13108 if (r != bfd_reloc_ok)
13109 {
13110 switch (r)
13111 {
13112 case bfd_reloc_undefined:
13113 (*link_info->callbacks->undefined_symbol)
13114 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13115 input_bfd, input_section, (*parent)->address, TRUE);
13116 break;
13117 case bfd_reloc_dangerous:
13118 BFD_ASSERT (error_message != NULL);
13119 (*link_info->callbacks->reloc_dangerous)
13120 (link_info, error_message,
13121 input_bfd, input_section, (*parent)->address);
13122 break;
13123 case bfd_reloc_overflow:
13124 (*link_info->callbacks->reloc_overflow)
13125 (link_info, NULL,
13126 bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
13127 (*parent)->howto->name, (*parent)->addend,
13128 input_bfd, input_section, (*parent)->address);
13129 break;
13130 case bfd_reloc_outofrange:
13131 /* PR ld/13730:
13132 This error can result when processing some partially
13133 complete binaries. Do not abort, but issue an error
13134 message instead. */
13135 link_info->callbacks->einfo
13136 /* xgettext:c-format */
13137 (_("%X%P: %pB(%pA): relocation \"%pR\" goes out of range\n"),
13138 abfd, input_section, * parent);
13139 goto error_return;
13140
13141 default:
13142 abort ();
13143 break;
13144 }
13145 }
13146 }
13147 }
13148
13149 free (reloc_vector);
13150 return data;
13151
13152 error_return:
13153 free (reloc_vector);
13154 return NULL;
13155 }
13156
13157 /* Check target symbol. */
13158
13159 static bfd_boolean
13160 nds32_elf_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
13161 {
13162 if (!sym || !sym->name || sym->name[0] != '$')
13163 return FALSE;
13164 return TRUE;
13165 }
13166
13167 /* nds32 find maybe function sym. Ignore target special symbol
13168 first, and then go the general function. */
13169
13170 static bfd_size_type
13171 nds32_elf_maybe_function_sym (const asymbol *sym, asection *sec,
13172 bfd_vma *code_off)
13173 {
13174 if (nds32_elf_is_target_special_symbol (NULL, (asymbol *) sym))
13175 return 0;
13176
13177 return _bfd_elf_maybe_function_sym (sym, sec, code_off);
13178 }
13179 \f
13180
13181 /* Do TLS model conversion. */
13182
13183 typedef struct relax_group_list_t
13184 {
13185 Elf_Internal_Rela *relo;
13186 struct relax_group_list_t *next;
13187 struct relax_group_list_t *next_sibling;
13188 int id;
13189 } relax_group_list_t;
13190
13191 int
13192 list_insert (relax_group_list_t *pHead, Elf_Internal_Rela *pElem);
13193
13194 int
13195 list_insert_sibling (relax_group_list_t *pNode, Elf_Internal_Rela *pElem);
13196
13197 void
13198 dump_chain (relax_group_list_t *pHead);
13199
13200 int
13201 list_insert (relax_group_list_t *pHead, Elf_Internal_Rela *pElem)
13202 {
13203 relax_group_list_t *pNext = pHead;
13204
13205 /* Find place. */
13206 while (pNext->next)
13207 {
13208 if (pNext->next->id > (int) pElem->r_addend)
13209 break;
13210
13211 pNext = pNext->next;
13212 }
13213
13214 /* Insert node. */
13215 relax_group_list_t *pNew = bfd_malloc (sizeof (relax_group_list_t));
13216 if (!pNew)
13217 return FALSE;
13218
13219 relax_group_list_t *tmp = pNext->next;
13220 pNext->next = pNew;
13221
13222 pNew->id = pElem->r_addend;
13223 pNew->relo = pElem;
13224 pNew->next = tmp;
13225 pNew->next_sibling = NULL;
13226
13227 return TRUE;
13228 }
13229
13230 int
13231 list_insert_sibling (relax_group_list_t *pNode, Elf_Internal_Rela *pElem)
13232 {
13233 relax_group_list_t *pNext = pNode;
13234
13235 /* Find place. */
13236 while (pNext->next_sibling)
13237 {
13238 pNext = pNext->next_sibling;
13239 }
13240
13241 /* Insert node. */
13242 relax_group_list_t *pNew = bfd_malloc (sizeof (relax_group_list_t));
13243 if (!pNew)
13244 return FALSE;
13245
13246 relax_group_list_t *tmp = pNext->next_sibling;
13247 pNext->next_sibling = pNew;
13248
13249 pNew->id = -1;
13250 pNew->relo = pElem;
13251 pNew->next = NULL;
13252 pNew->next_sibling = tmp;
13253
13254 return TRUE;
13255 }
13256
13257 void
13258 dump_chain (relax_group_list_t *pHead)
13259 {
13260 relax_group_list_t *pNext = pHead->next;
13261 while (pNext)
13262 {
13263 printf("group %d @ 0x%08x", pNext->id, (unsigned)pNext->relo->r_offset);
13264 relax_group_list_t *pNextSib = pNext->next_sibling;
13265 while (pNextSib)
13266 {
13267 printf(", %d", (unsigned) ELF32_R_TYPE (pNextSib->relo->r_info));
13268 pNextSib = pNextSib->next_sibling;
13269 }
13270 pNext = pNext->next;
13271 printf("\n");
13272 }
13273 }
13274
13275 /* Check R_NDS32_RELAX_GROUP of each section.
13276 There might be multiple sections in one object file. */
13277
13278 int
13279 elf32_nds32_check_relax_group (bfd *abfd, asection *asec)
13280 {
13281 elf32_nds32_relax_group_t *relax_group_ptr =
13282 elf32_nds32_relax_group_ptr (abfd);
13283
13284 int min_id = relax_group_ptr->min_id;
13285 int max_id = relax_group_ptr->max_id;
13286
13287 Elf_Internal_Rela *rel;
13288 Elf_Internal_Rela *relend;
13289 Elf_Internal_Rela *relocs;
13290 enum elf_nds32_reloc_type rtype;
13291
13292 do
13293 {
13294 /* Relocations MUST be kept in memory, because relaxation adjust them. */
13295 relocs = _bfd_elf_link_read_relocs (abfd, asec, NULL, NULL,
13296 TRUE /* keep_memory */);
13297 if (relocs == NULL)
13298 break;
13299
13300 /* Check R_NDS32_RELAX_GROUP. */
13301 relend = relocs + asec->reloc_count;
13302 for (rel = relocs; rel < relend; rel++)
13303 {
13304 int id;
13305 rtype = ELF32_R_TYPE (rel->r_info);
13306 if (rtype != R_NDS32_RELAX_GROUP)
13307 continue;
13308
13309 id = rel->r_addend;
13310 if (id < min_id)
13311 min_id = id;
13312 else if (id > max_id)
13313 max_id = id;
13314 }
13315 }
13316 while (FALSE);
13317
13318 if (elf_section_data (asec)->relocs != relocs)
13319 free (relocs);
13320
13321 if ((min_id != relax_group_ptr->min_id)
13322 || (max_id != relax_group_ptr->max_id))
13323 {
13324 relax_group_ptr->count = max_id - min_id + 1;
13325 BFD_ASSERT(min_id <= relax_group_ptr->min_id);
13326 relax_group_ptr->min_id = min_id;
13327 BFD_ASSERT(max_id >= relax_group_ptr->max_id);
13328 relax_group_ptr->max_id = max_id;
13329 }
13330
13331 return relax_group_ptr->count;
13332 }
13333
13334 /* Reorder RELAX_GROUP ID when command line option '-r' is applied. */
13335 struct section_id_list_t *relax_group_section_id_list = NULL;
13336
13337 struct section_id_list_t *
13338 elf32_nds32_lookup_section_id (int id, struct section_id_list_t **lst_ptr)
13339 {
13340 struct section_id_list_t *result = NULL;
13341 struct section_id_list_t *lst = *lst_ptr;
13342
13343 if (NULL == lst)
13344 {
13345 result = (struct section_id_list_t *) calloc
13346 (1, sizeof (struct section_id_list_t));
13347 BFD_ASSERT (result); /* Feed me. */
13348 result->id = id;
13349 *lst_ptr = result;
13350 }
13351 else
13352 {
13353 struct section_id_list_t *cur = lst;
13354 struct section_id_list_t *prv = NULL;
13355 struct section_id_list_t *sec = NULL;
13356
13357 while (cur)
13358 {
13359 if (cur->id < id)
13360 {
13361 prv = cur;
13362 cur = cur->next;
13363 continue;
13364 }
13365
13366 if (cur->id > id)
13367 {
13368 cur = NULL; /* To insert after prv. */
13369 sec = cur; /* In case prv == NULL. */
13370 }
13371
13372 break;
13373 }
13374
13375 if (NULL == cur)
13376 {
13377 /* Insert after prv. */
13378 result = (struct section_id_list_t *) calloc
13379 (1, sizeof (struct section_id_list_t));
13380 BFD_ASSERT (result); /* Feed me. */
13381 result->id = id;
13382 if (NULL != prv)
13383 {
13384 result->next = prv->next;
13385 prv->next = result;
13386 }
13387 else
13388 {
13389 *lst_ptr = result;
13390 result->next = sec;
13391 }
13392 }
13393 }
13394
13395 return result;
13396 }
13397
13398 int
13399 elf32_nds32_unify_relax_group (bfd *abfd, asection *asec)
13400 {
13401 static int next_relax_group_bias = 0;
13402
13403 elf32_nds32_relax_group_t *relax_group_ptr =
13404 elf32_nds32_relax_group_ptr (abfd);
13405
13406 bfd_boolean result = TRUE;
13407 Elf_Internal_Rela *rel;
13408 Elf_Internal_Rela *relend;
13409 Elf_Internal_Rela *relocs = NULL;
13410 enum elf_nds32_reloc_type rtype;
13411 struct section_id_list_t *node = NULL;
13412 int count = 0;
13413
13414 do
13415 {
13416 if (0 == relax_group_ptr->count)
13417 break;
13418
13419 /* Check if this section has been handled. */
13420 node = elf32_nds32_lookup_section_id (asec->id, &relax_group_section_id_list);
13421 if (NULL == node)
13422 break; /* Hit, the section id has handled. */
13423
13424 /* Relocations MUST be kept in memory, because relaxation adjust them. */
13425 relocs = _bfd_elf_link_read_relocs (abfd, asec, NULL, NULL,
13426 TRUE /* keep_memory */);
13427 if (relocs == NULL)
13428 {
13429 BFD_ASSERT (0); /* feed me */
13430 break;
13431 }
13432
13433 /* Allocate group id bias for this bfd! */
13434 if (0 == relax_group_ptr->init)
13435 {
13436 relax_group_ptr->bias = next_relax_group_bias;
13437 next_relax_group_bias += relax_group_ptr->count;
13438 relax_group_ptr->init = 1;
13439 }
13440
13441 /* Reorder relax group groups. */
13442 relend = relocs + asec->reloc_count;
13443 for (rel = relocs; rel < relend; rel++)
13444 {
13445 rtype = ELF32_R_TYPE(rel->r_info);
13446 if (rtype != R_NDS32_RELAX_GROUP)
13447 continue;
13448
13449 /* Change it. */
13450 rel->r_addend += relax_group_ptr->bias;
13451 /* Debugging count. */
13452 count++;
13453 }
13454 }
13455 while (FALSE);
13456
13457 if (elf_section_data (asec)->relocs != relocs)
13458 free (relocs);
13459
13460 return result;
13461 }
13462
13463 int
13464 nds32_elf_unify_tls_model (bfd *inbfd, asection *insec, bfd_byte *incontents,
13465 struct bfd_link_info *lnkinfo)
13466 {
13467 bfd_boolean result = TRUE;
13468 Elf_Internal_Rela *irel;
13469 Elf_Internal_Rela *irelend;
13470 Elf_Internal_Rela *internal_relocs;
13471 unsigned long r_symndx;
13472 enum elf_nds32_reloc_type r_type;
13473
13474 Elf_Internal_Sym *local_syms = NULL;
13475 bfd_byte *contents = NULL;
13476
13477 relax_group_list_t chain = { .id = -1, .next = NULL, .next_sibling = NULL };
13478
13479 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (inbfd)->symtab_hdr;
13480 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
13481 sym_hashes = elf_sym_hashes (inbfd);
13482 sym_hashes_end =
13483 sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
13484 if (!elf_bad_symtab (inbfd))
13485 sym_hashes_end -= symtab_hdr->sh_info;
13486
13487 /* Reorder RELAX_GROUP when command line option '-r' is applied. */
13488 if (bfd_link_relocatable (lnkinfo))
13489 {
13490 elf32_nds32_unify_relax_group (inbfd, insec);
13491 return result;
13492 }
13493
13494 /* Relocations MUST be kept in memory, because relaxation adjust them. */
13495 internal_relocs = _bfd_elf_link_read_relocs (inbfd, insec, NULL, NULL,
13496 TRUE /* keep_memory */);
13497 if (internal_relocs == NULL)
13498 goto error_return;
13499
13500 irelend = internal_relocs + insec->reloc_count;
13501 irel = find_relocs_at_address (internal_relocs, internal_relocs,
13502 irelend, R_NDS32_RELAX_ENTRY);
13503 if (irel == irelend)
13504 goto finish;
13505
13506 /* Chain/remove groups. */
13507 for (irel = internal_relocs; irel < irelend; irel++)
13508 {
13509 r_symndx = ELF32_R_SYM (irel->r_info);
13510 r_type = ELF32_R_TYPE (irel->r_info);
13511 if (r_type != R_NDS32_RELAX_GROUP)
13512 continue;
13513
13514 /* Remove it. */
13515 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_NONE);
13516 /* Chain it now. */
13517 if (!list_insert (&chain, irel))
13518 goto error_return;
13519 }
13520
13521 /* Collect group relocations. */
13522 /* Presume relocations are sorted. */
13523 relax_group_list_t *pNext = chain.next;
13524 while (pNext)
13525 {
13526 for (irel = internal_relocs; irel < irelend; irel++)
13527 {
13528 if (irel->r_offset == pNext->relo->r_offset)
13529 {
13530 /* Ignore Non-TLS relocation types. */
13531 r_type = ELF32_R_TYPE (irel->r_info);
13532 if ((R_NDS32_TLS_LE_HI20 > r_type)
13533 || (R_NDS32_RELAX_ENTRY == r_type))
13534 continue;
13535
13536 if (!list_insert_sibling (pNext, irel))
13537 goto error_return;
13538 }
13539 else if (irel->r_offset > pNext->relo->r_offset)
13540 {
13541 pNext = pNext->next;
13542 if (!pNext)
13543 break;
13544
13545 bfd_vma current_offset = pNext->relo->r_offset;
13546 if (irel->r_offset > current_offset)
13547 irel = internal_relocs; /* restart from head */
13548 else
13549 --irel; /* Check current irel again. */
13550 continue;
13551 }
13552 else
13553 {
13554 /* This shouldn't be reached. */
13555 }
13556 }
13557 if (pNext)
13558 pNext = pNext->next;
13559 }
13560
13561 #ifdef DUBUG_VERBOSE
13562 dump_chain(&chain);
13563 #endif
13564
13565 /* Get symbol table and section content. */
13566 if (incontents)
13567 contents = incontents;
13568 else if (!nds32_get_section_contents (inbfd, insec, &contents, TRUE)
13569 || !nds32_get_local_syms (inbfd, insec, &local_syms))
13570 goto error_return;
13571
13572 char *local_got_tls_type = elf32_nds32_local_got_tls_type (inbfd);
13573
13574 /* Convert TLS model each group if necessary. */
13575 pNext = chain.next;
13576
13577 int cur_grp_id = -1;
13578 int sethi_rt = -1;
13579 int add_rt = -1;
13580 enum elf_nds32_tls_type tls_type, org_tls_type, eff_tls_type;
13581
13582 tls_type = org_tls_type = eff_tls_type = 0;
13583
13584 while (pNext)
13585 {
13586 relax_group_list_t *pNextSig = pNext->next_sibling;
13587 while (pNextSig)
13588 {
13589 struct elf_link_hash_entry *h = NULL;
13590
13591 irel = pNextSig->relo;
13592 r_symndx = ELF32_R_SYM(irel->r_info);
13593 r_type = ELF32_R_TYPE(irel->r_info);
13594
13595 if (pNext->id != cur_grp_id)
13596 {
13597 cur_grp_id = pNext->id;
13598 org_tls_type = get_tls_type (r_type, NULL);
13599 if (r_symndx >= symtab_hdr->sh_info)
13600 {
13601 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
13602 while (h->root.type == bfd_link_hash_indirect
13603 || h->root.type == bfd_link_hash_warning)
13604 h = (struct elf_link_hash_entry *) h->root.u.i.link;
13605 tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type;
13606 }
13607 else
13608 {
13609 tls_type = local_got_tls_type
13610 ? local_got_tls_type[r_symndx]
13611 : GOT_NORMAL;
13612 }
13613
13614 eff_tls_type = 1 << (fls (tls_type) - 1);
13615 sethi_rt = N32_RT5(bfd_getb32 (contents + irel->r_offset));
13616 }
13617
13618 if (eff_tls_type != org_tls_type)
13619 {
13620 switch (org_tls_type)
13621 {
13622 /* DESC to IEGP/IE/LE. */
13623 case GOT_TLS_DESC:
13624 switch (eff_tls_type)
13625 {
13626 case GOT_TLS_IE:
13627 switch (r_type)
13628 {
13629 case R_NDS32_TLS_DESC_HI20:
13630 irel->r_info = ELF32_R_INFO(r_symndx,
13631 R_NDS32_TLS_IE_HI20);
13632 break;
13633 case R_NDS32_TLS_DESC_LO12:
13634 irel->r_info = ELF32_R_INFO(r_symndx,
13635 R_NDS32_TLS_IE_LO12);
13636 break;
13637 case R_NDS32_TLS_DESC_ADD:
13638 {
13639 uint32_t insn = bfd_getb32 (contents + irel->r_offset);
13640 add_rt = N32_RT5 (insn);
13641 insn = N32_TYPE2 (LWI, add_rt, sethi_rt, 0);
13642 bfd_putb32 (insn, contents + irel->r_offset);
13643
13644 irel->r_info = ELF32_R_INFO(r_symndx, R_NDS32_NONE);
13645 }
13646 break;
13647 case R_NDS32_TLS_DESC_FUNC:
13648 bfd_putb32 (INSN_NOP, contents + irel->r_offset);
13649 irel->r_info = ELF32_R_INFO(r_symndx,
13650 R_NDS32_RELAX_REMOVE);
13651 break;
13652 case R_NDS32_TLS_DESC_CALL:
13653 {
13654 uint32_t insn = N32_ALU1(ADD, REG_R0, add_rt,
13655 REG_TP);
13656 bfd_putb32 (insn, contents + irel->r_offset);
13657
13658 irel->r_info = ELF32_R_INFO(r_symndx, R_NDS32_NONE);
13659 }
13660 break;
13661 case R_NDS32_LOADSTORE:
13662 case R_NDS32_PTR:
13663 case R_NDS32_PTR_RESOLVED:
13664 case R_NDS32_NONE:
13665 case R_NDS32_LABEL:
13666 break;
13667 default:
13668 BFD_ASSERT(0);
13669 break;
13670 }
13671 break;
13672 case GOT_TLS_IEGP:
13673 switch (r_type)
13674 {
13675 case R_NDS32_TLS_DESC_HI20:
13676 irel->r_info = ELF32_R_INFO(r_symndx,
13677 R_NDS32_TLS_IEGP_HI20);
13678 break;
13679 case R_NDS32_TLS_DESC_LO12:
13680 irel->r_info = ELF32_R_INFO(r_symndx,
13681 R_NDS32_TLS_IEGP_LO12);
13682 break;
13683 case R_NDS32_TLS_DESC_ADD:
13684 {
13685 uint32_t insn = bfd_getb32 (contents + irel->r_offset);
13686 add_rt = N32_RT5 (insn);
13687 insn = N32_MEM(LW, add_rt, sethi_rt, REG_GP, 0);
13688 bfd_putb32 (insn, contents + irel->r_offset);
13689
13690 irel->r_info = ELF32_R_INFO(r_symndx, R_NDS32_NONE);
13691 }
13692 break;
13693 case R_NDS32_TLS_DESC_FUNC:
13694 bfd_putb32 (INSN_NOP, contents + irel->r_offset);
13695 irel->r_info = ELF32_R_INFO(r_symndx,
13696 R_NDS32_RELAX_REMOVE);
13697 break;
13698 case R_NDS32_TLS_DESC_CALL:
13699 {
13700 uint32_t insn = N32_ALU1(ADD, REG_R0, add_rt,
13701 REG_TP);
13702 bfd_putb32 (insn, contents + irel->r_offset);
13703
13704 irel->r_info = ELF32_R_INFO(r_symndx, R_NDS32_NONE);
13705 }
13706 break;
13707 case R_NDS32_LOADSTORE:
13708 case R_NDS32_PTR:
13709 case R_NDS32_PTR_RESOLVED:
13710 case R_NDS32_NONE:
13711 case R_NDS32_LABEL:
13712 break;
13713 default:
13714 BFD_ASSERT(0);
13715 break;
13716 }
13717 break;
13718 case GOT_TLS_LE:
13719 switch (r_type)
13720 {
13721 case R_NDS32_TLS_DESC_HI20:
13722 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_HI20);
13723 break;
13724 case R_NDS32_TLS_DESC_LO12:
13725 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_LO12);
13726 break;
13727 case R_NDS32_TLS_DESC_ADD:
13728 {
13729 uint32_t insn = bfd_getb32 (contents + irel->r_offset);
13730
13731 add_rt = N32_RT5 (insn);
13732 insn = N32_ALU1 (ADD, REG_R0, sethi_rt, REG_TP);
13733 bfd_putb32 (insn, contents + irel->r_offset);
13734
13735 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_ADD);
13736 }
13737 break;
13738 case R_NDS32_TLS_DESC_FUNC:
13739 bfd_putb32 (INSN_NOP, contents + irel->r_offset);
13740 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_RELAX_REMOVE);
13741 break;
13742 case R_NDS32_TLS_DESC_CALL:
13743 bfd_putb32 (INSN_NOP, contents + irel->r_offset);
13744 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_RELAX_REMOVE);
13745 break;
13746 case R_NDS32_LOADSTORE:
13747 case R_NDS32_PTR:
13748 case R_NDS32_PTR_RESOLVED:
13749 case R_NDS32_NONE:
13750 case R_NDS32_LABEL:
13751 break;
13752 default:
13753 BFD_ASSERT(0);
13754 break;
13755 }
13756 break;
13757 default:
13758 break;
13759 }
13760 break;
13761 /* IEGP to IE/LE. */
13762 case GOT_TLS_IEGP:
13763 switch (eff_tls_type)
13764 {
13765 case GOT_TLS_IE:
13766 switch (r_type)
13767 {
13768 case R_NDS32_TLS_IEGP_HI20:
13769 irel->r_info = ELF32_R_INFO(r_symndx,
13770 R_NDS32_TLS_IE_HI20);
13771 break;
13772 case R_NDS32_TLS_IEGP_LO12:
13773 irel->r_info = ELF32_R_INFO(r_symndx,
13774 R_NDS32_TLS_IE_LO12);
13775 break;
13776 case R_NDS32_PTR_RESOLVED:
13777 {
13778 uint32_t insn = bfd_getb32 (contents + irel->r_offset);
13779
13780 add_rt = N32_RT5 (insn);
13781 insn = N32_TYPE2 (LWI, add_rt, sethi_rt, 0);
13782 bfd_putb32 (insn, contents + irel->r_offset);
13783 }
13784 break;
13785 case R_NDS32_TLS_IEGP_LW:
13786 break;
13787 case R_NDS32_LOADSTORE:
13788 case R_NDS32_PTR:
13789 case R_NDS32_NONE:
13790 case R_NDS32_LABEL:
13791 break;
13792 default:
13793 BFD_ASSERT(0);
13794 break;
13795 }
13796 break;
13797 case GOT_TLS_LE:
13798 switch (r_type)
13799 {
13800 case R_NDS32_TLS_IEGP_HI20:
13801 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_HI20);
13802 break;
13803 case R_NDS32_TLS_IEGP_LO12:
13804 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_LO12);
13805 break;
13806 case R_NDS32_TLS_IEGP_LW:
13807 bfd_putb32 (INSN_NOP, contents + irel->r_offset);
13808 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_RELAX_REMOVE);
13809 break;
13810 case R_NDS32_LOADSTORE:
13811 case R_NDS32_PTR:
13812 case R_NDS32_NONE:
13813 case R_NDS32_LABEL:
13814 case R_NDS32_PTR_RESOLVED:
13815 break;
13816 default:
13817 BFD_ASSERT(0);
13818 break;
13819 }
13820 break;
13821 default:
13822 break;
13823 }
13824 break;
13825 /* IE to LE. */
13826 case GOT_TLS_IE:
13827 switch (eff_tls_type)
13828 {
13829 case GOT_TLS_LE:
13830 switch (r_type)
13831 {
13832 case R_NDS32_TLS_IE_HI20:
13833 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_HI20);
13834 break;
13835 case R_NDS32_TLS_IE_LO12S2:
13836 {
13837 uint32_t insn = bfd_getb32 (contents + irel->r_offset);
13838
13839 add_rt = N32_RT5 (insn);
13840 insn = N32_TYPE2 (ORI, add_rt, sethi_rt, 0);
13841 bfd_putb32 (insn, contents + irel->r_offset);
13842
13843 irel->r_info = ELF32_R_INFO (r_symndx, R_NDS32_TLS_LE_LO12);
13844 }
13845 break;
13846 case R_NDS32_LOADSTORE:
13847 case R_NDS32_PTR:
13848 case R_NDS32_NONE:
13849 case R_NDS32_LABEL:
13850 break;
13851 default:
13852 BFD_ASSERT(0);
13853 break;
13854 }
13855 break;
13856 default:
13857 break;
13858 }
13859 break;
13860 default:
13861 break;
13862 }
13863 }
13864 pNextSig = pNextSig->next_sibling;
13865 }
13866
13867 #if 1
13868 pNext = pNext->next;
13869 #else
13870 while (pNext)
13871 {
13872 if (pNext->id != cur_grp_id)
13873 break;
13874 pNext = pNext->next;
13875 }
13876 #endif
13877 }
13878
13879 finish:
13880 if (incontents)
13881 contents = NULL;
13882
13883 if (elf_section_data (insec)->relocs != internal_relocs)
13884 free (internal_relocs);
13885
13886 if (elf_section_data (insec)->this_hdr.contents != contents)
13887 free (contents);
13888
13889 if (symtab_hdr->contents != (bfd_byte *) local_syms)
13890 free (local_syms);
13891
13892 if (chain.next)
13893 {
13894 pNext = chain.next;
13895 relax_group_list_t *pDel;
13896 while (pNext)
13897 {
13898 pDel = pNext;
13899 pNext = pNext->next;
13900 free (pDel);
13901 }
13902 }
13903
13904 return result;
13905
13906 error_return:
13907 result = FALSE;
13908 goto finish;
13909 }
13910
13911 /* End TLS model conversion. */
13912
13913 #define ELF_ARCH bfd_arch_nds32
13914 #define ELF_MACHINE_CODE EM_NDS32
13915 #define ELF_MAXPAGESIZE 0x1000
13916 #define ELF_TARGET_ID NDS32_ELF_DATA
13917
13918 #define TARGET_BIG_SYM nds32_elf32_be_vec
13919 #define TARGET_BIG_NAME "elf32-nds32be"
13920 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
13921 #define TARGET_LITTLE_NAME "elf32-nds32le"
13922
13923 #define elf_info_to_howto nds32_info_to_howto
13924 #define elf_info_to_howto_rel nds32_info_to_howto_rel
13925
13926 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
13927 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
13928 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
13929 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
13930 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
13931
13932 #define bfd_elf32_mkobject nds32_elf_mkobject
13933 #define elf_backend_action_discarded nds32_elf_action_discarded
13934 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
13935 #define elf_backend_check_relocs nds32_elf_check_relocs
13936 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
13937 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
13938 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
13939 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
13940 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
13941 #define elf_backend_relocate_section nds32_elf_relocate_section
13942 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
13943 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
13944 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
13945 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
13946 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
13947 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
13948 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
13949 #define elf_backend_object_p nds32_elf_object_p
13950 #define elf_backend_final_write_processing nds32_elf_final_write_processing
13951 #define elf_backend_special_sections nds32_elf_special_sections
13952 #define elf_backend_section_flags nds32_elf_section_flags
13953 #define bfd_elf32_bfd_get_relocated_section_contents \
13954 nds32_elf_get_relocated_section_contents
13955 #define bfd_elf32_bfd_is_target_special_symbol nds32_elf_is_target_special_symbol
13956 #define elf_backend_maybe_function_sym nds32_elf_maybe_function_sym
13957
13958 #define elf_backend_can_gc_sections 1
13959 #define elf_backend_can_refcount 1
13960 #define elf_backend_want_got_plt 1
13961 #define elf_backend_plt_readonly 1
13962 #define elf_backend_want_plt_sym 0
13963 #define elf_backend_got_header_size 12
13964 #define elf_backend_may_use_rel_p 1
13965 #define elf_backend_default_use_rela_p 1
13966 #define elf_backend_may_use_rela_p 1
13967 #define elf_backend_dtrel_excludes_plt 0
13968
13969 #include "elf32-target.h"
13970
13971 #undef ELF_MAXPAGESIZE
13972 #define ELF_MAXPAGESIZE 0x2000
13973
13974 #undef TARGET_BIG_SYM
13975 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
13976 #undef TARGET_BIG_NAME
13977 #define TARGET_BIG_NAME "elf32-nds32be-linux"
13978 #undef TARGET_LITTLE_SYM
13979 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
13980 #undef TARGET_LITTLE_NAME
13981 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
13982 #undef elf32_bed
13983 #define elf32_bed elf32_nds32_lin_bed
13984
13985 #include "elf32-target.h"