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Fix PR ld/20995 for cris-linux
[binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson, based on elf32-fr30.c
5 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf/cris.h"
29 #include <limits.h>
30
31 bfd_reloc_status_type
32 cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *,
33 asection *, bfd *, char **);
34 static bfd_boolean
35 cris_elf_set_mach_from_flags (bfd *, unsigned long);
36
37 /* Forward declarations. */
38 static reloc_howto_type cris_elf_howto_table [] =
39 {
40 /* This reloc does nothing. */
41 HOWTO (R_CRIS_NONE, /* type */
42 0, /* rightshift */
43 3, /* size (0 = byte, 1 = short, 2 = long) */
44 0, /* bitsize */
45 FALSE, /* pc_relative */
46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_CRIS_NONE", /* name */
50 FALSE, /* partial_inplace */
51 0, /* src_mask */
52 0, /* dst_mask */
53 FALSE), /* pcrel_offset */
54
55 /* An 8 bit absolute relocation. */
56 HOWTO (R_CRIS_8, /* type */
57 0, /* rightshift */
58 0, /* size (0 = byte, 1 = short, 2 = long) */
59 8, /* bitsize */
60 FALSE, /* pc_relative */
61 0, /* bitpos */
62 complain_overflow_bitfield, /* complain_on_overflow */
63 bfd_elf_generic_reloc, /* special_function */
64 "R_CRIS_8", /* name */
65 FALSE, /* partial_inplace */
66 0x0000, /* src_mask */
67 0x00ff, /* dst_mask */
68 FALSE), /* pcrel_offset */
69
70 /* A 16 bit absolute relocation. */
71 HOWTO (R_CRIS_16, /* type */
72 0, /* rightshift */
73 1, /* size (0 = byte, 1 = short, 2 = long) */
74 16, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_bitfield, /* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_CRIS_16", /* name */
80 FALSE, /* partial_inplace */
81 0x00000000, /* src_mask */
82 0x0000ffff, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 /* A 32 bit absolute relocation. */
86 HOWTO (R_CRIS_32, /* type */
87 0, /* rightshift */
88 2, /* size (0 = byte, 1 = short, 2 = long) */
89 32, /* bitsize */
90 FALSE, /* pc_relative */
91 0, /* bitpos */
92 /* We don't want overflow complaints for 64-bit vma builds
93 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
94 32-bit ELF) where sym=0xc0001234.
95 Don't do this for the PIC relocs, as we don't expect to
96 see them with large offsets. */
97 complain_overflow_dont, /* complain_on_overflow */
98 bfd_elf_generic_reloc, /* special_function */
99 "R_CRIS_32", /* name */
100 FALSE, /* partial_inplace */
101 0x00000000, /* src_mask */
102 0xffffffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
104
105 /* An 8 bit PC-relative relocation. */
106 HOWTO (R_CRIS_8_PCREL, /* type */
107 0, /* rightshift */
108 0, /* size (0 = byte, 1 = short, 2 = long) */
109 8, /* bitsize */
110 TRUE, /* pc_relative */
111 0, /* bitpos */
112 complain_overflow_bitfield, /* complain_on_overflow */
113 cris_elf_pcrel_reloc, /* special_function */
114 "R_CRIS_8_PCREL", /* name */
115 FALSE, /* partial_inplace */
116 0x0000, /* src_mask */
117 0x00ff, /* dst_mask */
118 TRUE), /* pcrel_offset */
119
120 /* A 16 bit PC-relative relocation. */
121 HOWTO (R_CRIS_16_PCREL, /* type */
122 0, /* rightshift */
123 1, /* size (0 = byte, 1 = short, 2 = long) */
124 16, /* bitsize */
125 TRUE, /* pc_relative */
126 0, /* bitpos */
127 complain_overflow_bitfield, /* complain_on_overflow */
128 cris_elf_pcrel_reloc, /* special_function */
129 "R_CRIS_16_PCREL", /* name */
130 FALSE, /* partial_inplace */
131 0x00000000, /* src_mask */
132 0x0000ffff, /* dst_mask */
133 TRUE), /* pcrel_offset */
134
135 /* A 32 bit PC-relative relocation. */
136 HOWTO (R_CRIS_32_PCREL, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 32, /* bitsize */
140 TRUE, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 cris_elf_pcrel_reloc, /* special_function */
144 "R_CRIS_32_PCREL", /* name */
145 FALSE, /* partial_inplace */
146 0x00000000, /* src_mask */
147 0xffffffff, /* dst_mask */
148 TRUE), /* pcrel_offset */
149
150 /* GNU extension to record C++ vtable hierarchy. */
151 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
152 0, /* rightshift */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
154 0, /* bitsize */
155 FALSE, /* pc_relative */
156 0, /* bitpos */
157 complain_overflow_dont, /* complain_on_overflow */
158 NULL, /* special_function */
159 "R_CRIS_GNU_VTINHERIT", /* name */
160 FALSE, /* partial_inplace */
161 0, /* src_mask */
162 0, /* dst_mask */
163 FALSE), /* pcrel_offset */
164
165 /* GNU extension to record C++ vtable member usage. */
166 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
167 0, /* rightshift */
168 2, /* size (0 = byte, 1 = short, 2 = long) */
169 0, /* bitsize */
170 FALSE, /* pc_relative */
171 0, /* bitpos */
172 complain_overflow_dont, /* complain_on_overflow */
173 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
174 "R_CRIS_GNU_VTENTRY", /* name */
175 FALSE, /* partial_inplace */
176 0, /* src_mask */
177 0, /* dst_mask */
178 FALSE), /* pcrel_offset */
179
180 /* This is used only by the dynamic linker. The symbol should exist
181 both in the object being run and in some shared library. The
182 dynamic linker copies the data addressed by the symbol from the
183 shared library into the object, because the object being
184 run has to have the data at some particular address. */
185 HOWTO (R_CRIS_COPY, /* type */
186 0, /* rightshift */
187 2, /* size (0 = byte, 1 = short, 2 = long) */
188 32, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_bitfield, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_CRIS_COPY", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 /* Like R_CRIS_32, but used when setting global offset table entries. */
200 HOWTO (R_CRIS_GLOB_DAT, /* type */
201 0, /* rightshift */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
203 32, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_bitfield, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_CRIS_GLOB_DAT", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* Marks a procedure linkage table entry for a symbol. */
215 HOWTO (R_CRIS_JUMP_SLOT, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 32, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_bitfield, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_CRIS_JUMP_SLOT", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 /* Used only by the dynamic linker. When the object is run, this
230 longword is set to the load address of the object, plus the
231 addend. */
232 HOWTO (R_CRIS_RELATIVE, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 32, /* bitsize */
236 FALSE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_CRIS_RELATIVE", /* name */
241 FALSE, /* partial_inplace */
242 0, /* src_mask */
243 0xffffffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
245
246 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
247 HOWTO (R_CRIS_16_GOT, /* type */
248 0, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_CRIS_16_GOT", /* name */
256 FALSE, /* partial_inplace */
257 0, /* src_mask */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 HOWTO (R_CRIS_32_GOT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
265 FALSE, /* pc_relative */
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_32_GOT", /* name */
270 FALSE, /* partial_inplace */
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274
275 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
276 the GOT table for the symbol. */
277 HOWTO (R_CRIS_16_GOTPLT, /* type */
278 0, /* rightshift */
279 1, /* size (0 = byte, 1 = short, 2 = long) */
280 16, /* bitsize */
281 FALSE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_CRIS_16_GOTPLT", /* name */
286 FALSE, /* partial_inplace */
287 0, /* src_mask */
288 0xffff, /* dst_mask */
289 FALSE), /* pcrel_offset */
290
291 HOWTO (R_CRIS_32_GOTPLT, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
295 FALSE, /* pc_relative */
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_CRIS_32_GOTPLT", /* name */
300 FALSE, /* partial_inplace */
301 0, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304
305 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
306 be necessary. */
307 HOWTO (R_CRIS_32_GOTREL, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 32, /* bitsize */
311 FALSE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_CRIS_32_GOTREL", /* name */
316 FALSE, /* partial_inplace */
317 0, /* src_mask */
318 0xffffffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
320
321 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
322 to create PLT entry for symbol. */
323 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_CRIS_32_PLT_GOTREL", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* A 32-bit offset from PC (location after the relocation) + addend to
338 entry for this symbol in PLT and request to create PLT entry for
339 symbol. */
340 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
341 0, /* rightshift */
342 2, /* size (0 = byte, 1 = short, 2 = long) */
343 32, /* bitsize */
344 TRUE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_bitfield, /* complain_on_overflow */
347 cris_elf_pcrel_reloc, /* special_function */
348 "R_CRIS_32_PLT_PCREL", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0xffffffff, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 /* We don't handle these in any special manner and cross-format
355 linking is not supported; just recognize them enough to pass them
356 around. FIXME: do the same for most PIC relocs and add sanity
357 tests to actually refuse gracefully to handle these and PIC
358 relocs for cross-format linking. */
359 #define TLSHOWTO32(name) \
360 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
361 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
362 #define TLSHOWTO16X(name, X) \
363 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
364 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
365 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
366 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
367
368 TLSHOWTO32 (R_CRIS_32_GOT_GD),
369 TLSHOWTO16 (R_CRIS_16_GOT_GD),
370 TLSHOWTO32 (R_CRIS_32_GD),
371 TLSHOWTO32 (R_CRIS_DTP),
372 TLSHOWTO32 (R_CRIS_32_DTPREL),
373 TLSHOWTO16S (R_CRIS_16_DTPREL),
374 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
375 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
376 TLSHOWTO32 (R_CRIS_32_TPREL),
377 TLSHOWTO16S (R_CRIS_16_TPREL),
378 TLSHOWTO32 (R_CRIS_DTPMOD),
379 TLSHOWTO32 (R_CRIS_32_IE)
380 };
381 \f
382 /* Map BFD reloc types to CRIS ELF reloc types. */
383
384 struct cris_reloc_map
385 {
386 bfd_reloc_code_real_type bfd_reloc_val;
387 unsigned int cris_reloc_val;
388 };
389
390 static const struct cris_reloc_map cris_reloc_map [] =
391 {
392 { BFD_RELOC_NONE, R_CRIS_NONE },
393 { BFD_RELOC_8, R_CRIS_8 },
394 { BFD_RELOC_16, R_CRIS_16 },
395 { BFD_RELOC_32, R_CRIS_32 },
396 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
397 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
398 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
399 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
400 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
401 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
402 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
403 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
404 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
405 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
406 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
407 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
408 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
409 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
410 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
411 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
412 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
413 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
414 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
415 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
416 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
417 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
418 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
419 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
420 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
421 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
422 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
423 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
424 };
425
426 static reloc_howto_type *
427 cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
428 bfd_reloc_code_real_type code)
429 {
430 unsigned int i;
431
432 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
433 if (cris_reloc_map [i].bfd_reloc_val == code)
434 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
435
436 return NULL;
437 }
438
439 static reloc_howto_type *
440 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
441 {
442 unsigned int i;
443
444 for (i = 0;
445 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
446 i++)
447 if (cris_elf_howto_table[i].name != NULL
448 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
449 return &cris_elf_howto_table[i];
450
451 return NULL;
452 }
453
454 /* Set the howto pointer for an CRIS ELF reloc. */
455
456 static void
457 cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
458 arelent * cache_ptr,
459 Elf_Internal_Rela * dst)
460 {
461 enum elf_cris_reloc_type r_type;
462
463 r_type = ELF32_R_TYPE (dst->r_info);
464 if (r_type >= R_CRIS_max)
465 {
466 /* xgettext:c-format */
467 _bfd_error_handler (_("%B: invalid CRIS reloc number: %d"), abfd, r_type);
468 r_type = 0;
469 }
470 cache_ptr->howto = & cris_elf_howto_table [r_type];
471 }
472
473 bfd_reloc_status_type
474 cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
475 arelent *reloc_entry,
476 asymbol *symbol,
477 void * data ATTRIBUTE_UNUSED,
478 asection *input_section,
479 bfd *output_bfd,
480 char **error_message ATTRIBUTE_UNUSED)
481 {
482 /* By default (using only bfd_elf_generic_reloc when linking to
483 non-ELF formats) PC-relative relocs are relative to the beginning
484 of the reloc. CRIS PC-relative relocs are relative to the position
485 *after* the reloc because that's what pre-CRISv32 PC points to
486 after reading an insn field with that reloc. (For CRISv32, PC is
487 actually relative to the start of the insn, but we keep the old
488 definition.) Still, we use as much generic machinery as we can.
489
490 Only adjust when doing a final link. */
491 if (output_bfd == (bfd *) NULL)
492 reloc_entry->addend -= 1 << reloc_entry->howto->size;
493
494 return
495 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
496 input_section, output_bfd, error_message);
497 }
498 \f
499 /* Support for core dump NOTE sections.
500 The slightly unintuitive code layout is an attempt to keep at least
501 some similarities with other ports, hoping to simplify general
502 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
503
504 static bfd_boolean
505 cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
506 {
507 int offset;
508 size_t size;
509
510 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
511 switch (note->descsz)
512 {
513 default:
514 return FALSE;
515
516 case 202: /* Linux/CRISv32 */
517 /* pr_cursig */
518 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
519
520 /* pr_pid */
521 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
522
523 /* pr_reg */
524 offset = 70;
525 size = 128;
526
527 break;
528 }
529 else
530 switch (note->descsz)
531 {
532 default:
533 return FALSE;
534
535 case 214: /* Linux/CRIS */
536 /* pr_cursig */
537 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
538
539 /* pr_pid */
540 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
541
542 /* pr_reg */
543 offset = 70;
544 size = 140;
545
546 break;
547 }
548
549 /* Make a ".reg/999" section. */
550 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
551 size, note->descpos + offset);
552 }
553
554 static bfd_boolean
555 cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
556 {
557 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
558 switch (note->descsz)
559 {
560 default:
561 return FALSE;
562
563 case 124: /* Linux/CRISv32 elf_prpsinfo */
564 elf_tdata (abfd)->core->program
565 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
566 elf_tdata (abfd)->core->command
567 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
568 }
569 else
570 switch (note->descsz)
571 {
572 default:
573 return FALSE;
574
575 case 124: /* Linux/CRIS elf_prpsinfo */
576 elf_tdata (abfd)->core->program
577 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
578 elf_tdata (abfd)->core->command
579 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
580 }
581
582 /* Note that for some reason, a spurious space is tacked
583 onto the end of the args in some (at least one anyway)
584 implementations, so strip it off if it exists. */
585
586 {
587 char *command = elf_tdata (abfd)->core->command;
588 int n = strlen (command);
589
590 if (0 < n && command[n - 1] == ' ')
591 command[n - 1] = '\0';
592 }
593
594 return TRUE;
595 }
596 \f
597 /* The name of the dynamic interpreter. This is put in the .interp
598 section. */
599
600 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
601
602 /* The size in bytes of an entry in the procedure linkage table. */
603
604 #define PLT_ENTRY_SIZE 20
605 #define PLT_ENTRY_SIZE_V32 26
606
607 /* The first entry in an absolute procedure linkage table looks like this. */
608
609 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
610 {
611 0xfc, 0xe1,
612 0x7e, 0x7e, /* push mof. */
613 0x7f, 0x0d, /* (dip [pc+]) */
614 0, 0, 0, 0, /* Replaced with address of .got + 4. */
615 0x30, 0x7a, /* move [...],mof */
616 0x7f, 0x0d, /* (dip [pc+]) */
617 0, 0, 0, 0, /* Replaced with address of .got + 8. */
618 0x30, 0x09 /* jump [...] */
619 };
620
621 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
622 {
623 0x84, 0xe2, /* subq 4,$sp */
624 0x6f, 0xfe, /* move.d 0,$acr */
625 0, 0, 0, 0, /* Replaced by address of .got + 4. */
626 0x7e, 0x7a, /* move $mof,[$sp] */
627 0x3f, 0x7a, /* move [$acr],$mof */
628 0x04, 0xf2, /* addq 4,acr */
629 0x6f, 0xfa, /* move.d [$acr],$acr */
630 0xbf, 0x09, /* jump $acr */
631 0xb0, 0x05, /* nop */
632 0, 0 /* Pad out to 26 bytes. */
633 };
634
635 /* Subsequent entries in an absolute procedure linkage table look like
636 this. */
637
638 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
639 {
640 0x7f, 0x0d, /* (dip [pc+]) */
641 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
642 0x30, 0x09, /* jump [...] */
643 0x3f, 0x7e, /* move [pc+],mof */
644 0, 0, 0, 0, /* Replaced with offset into relocation table. */
645 0x2f, 0xfe, /* add.d [pc+],pc */
646 0xec, 0xff,
647 0xff, 0xff /* Replaced with offset to start of .plt. */
648 };
649
650 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
651 {
652 0x6f, 0xfe, /* move.d 0,$acr */
653 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
654 0x6f, 0xfa, /* move.d [$acr],$acr */
655 0xbf, 0x09, /* jump $acr */
656 0xb0, 0x05, /* nop */
657 0x3f, 0x7e, /* move 0,mof */
658 0, 0, 0, 0, /* Replaced with offset into relocation table. */
659 0xbf, 0x0e, /* ba start_of_plt0_entry */
660 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
661 0xb0, 0x05 /* nop */
662 };
663
664 /* The first entry in a PIC procedure linkage table looks like this. */
665
666 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
667 {
668 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
669 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
670 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
671 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
672 };
673
674 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
675 {
676 0x84, 0xe2, /* subq 4,$sp */
677 0x04, 0x01, /* addoq 4,$r0,$acr */
678 0x7e, 0x7a, /* move $mof,[$sp] */
679 0x3f, 0x7a, /* move [$acr],$mof */
680 0x04, 0xf2, /* addq 4,$acr */
681 0x6f, 0xfa, /* move.d [$acr],$acr */
682 0xbf, 0x09, /* jump $acr */
683 0xb0, 0x05, /* nop */
684 0, 0, /* Pad out to 26 bytes. */
685 0, 0, 0, 0,
686 0, 0, 0, 0
687 };
688
689 /* Subsequent entries in a PIC procedure linkage table look like this. */
690
691 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
692 {
693 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
694 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
695 0x30, 0x09, /* jump [...] */
696 0x3f, 0x7e, /* move [pc+],mof */
697 0, 0, 0, 0, /* Replaced with offset into relocation table. */
698 0x2f, 0xfe, /* add.d [pc+],pc */
699 0xec, 0xff, /* Replaced with offset to start of .plt. */
700 0xff, 0xff
701 };
702
703 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
704 {
705 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
706 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
707 0x6f, 0xfa, /* move.d [$acr],$acr */
708 0xbf, 0x09, /* jump $acr */
709 0xb0, 0x05, /* nop */
710 0x3f, 0x7e, /* move relocoffs,$mof */
711 0, 0, 0, 0, /* Replaced with offset into relocation table. */
712 0xbf, 0x0e, /* ba start_of_plt */
713 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
714 0xb0, 0x05 /* nop */
715 };
716 \f
717 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
718 (and most other PIC/shlib stuff). Check that we don't drift away
719 without reason.
720
721 The CRIS linker, like the m68k and i386 linkers (and probably the rest
722 too) needs to keep track of the number of relocs that it decides to
723 copy in check_relocs for each symbol. This is so that it can discard
724 PC relative relocs if it doesn't need them when linking with
725 -Bsymbolic. We store the information in a field extending the regular
726 ELF linker hash table. */
727
728 /* This structure keeps track of the number of PC relative relocs we have
729 copied for a given symbol. */
730
731 struct elf_cris_pcrel_relocs_copied
732 {
733 /* Next section. */
734 struct elf_cris_pcrel_relocs_copied *next;
735
736 /* A section in dynobj. */
737 asection *section;
738
739 /* Number of relocs copied in this section. */
740 bfd_size_type count;
741
742 /* Example of reloc being copied, for message. */
743 enum elf_cris_reloc_type r_type;
744 };
745
746 /* CRIS ELF linker hash entry. */
747
748 struct elf_cris_link_hash_entry
749 {
750 struct elf_link_hash_entry root;
751
752 /* Number of PC relative relocs copied for this symbol. */
753 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
754
755 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
756 both a general GOT and a PLT-specific GOT entry for the same symbol,
757 when it is referenced both as a function and as a function pointer.
758
759 Number of GOTPLT references for a function. */
760 bfd_signed_vma gotplt_refcount;
761
762 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
763 (zero is never used as an index). FIXME: We should be able to fold
764 this with gotplt_refcount in a union, like the got and plt unions in
765 elf_link_hash_entry. */
766 bfd_size_type gotplt_offset;
767
768 /* The root.got.refcount is the sum of the regular reference counts
769 (this) and those members below. We have to keep a separate count
770 to track when we've found the first (or last) reference to a
771 regular got entry. The offset is in root.got.offset. */
772 bfd_signed_vma reg_got_refcount;
773
774 /* Similar to the above, the number of reloc references to this
775 symbols that need a R_CRIS_32_TPREL slot. The offset is in
776 root.got.offset, because this and .dtp_refcount can't validly
777 happen when there's also a regular GOT entry; that's invalid
778 input for which an error is emitted. */
779 bfd_signed_vma tprel_refcount;
780
781 /* Similar to the above, the number of reloc references to this
782 symbols that need a R_CRIS_DTP slot. The offset is in
783 root.got.offset; plus 4 if .tprel_refcount > 0. */
784 bfd_signed_vma dtp_refcount;
785 };
786
787 static bfd_boolean
788 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
789 void * );
790 static bfd_boolean
791 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
792 void *);
793
794 /* The local_got_refcounts and local_got_offsets are a multiple of
795 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
796 refcount for GOT itself, see code), with the summary / group offset
797 for local symbols located at offset N, reference counts for
798 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
799 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
800 3*LSNUM. */
801
802 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
803 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
804 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
805 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
806
807 /* CRIS ELF linker hash table. */
808
809 struct elf_cris_link_hash_table
810 {
811 struct elf_link_hash_table root;
812
813 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
814 since we try and avoid creating GOTPLT:s when there's already a GOT.
815 Instead, we keep and update the next available index here. */
816 bfd_size_type next_gotplt_entry;
817
818 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
819 been seen for any input; if != 0, then the constant-offset
820 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
821 negative at relocation, so that we don't need an extra flag for
822 when the reloc is output. */
823 bfd_signed_vma dtpmod_refcount;
824 };
825
826 /* Traverse a CRIS ELF linker hash table. */
827
828 #define elf_cris_link_hash_traverse(table, func, info) \
829 (elf_link_hash_traverse \
830 (&(table)->root, \
831 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
832 (info)))
833
834 /* Get the CRIS ELF linker hash table from a link_info structure. */
835
836 #define elf_cris_hash_table(p) \
837 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
838 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
839
840 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
841 "parent class"). The .root reference is just a simple type
842 check on the argument. */
843
844 #define elf_cris_hash_entry(p) \
845 ((struct elf_cris_link_hash_entry *) (&(p)->root))
846
847 /* Create an entry in a CRIS ELF linker hash table. */
848
849 static struct bfd_hash_entry *
850 elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
851 struct bfd_hash_table *table,
852 const char *string)
853 {
854 struct elf_cris_link_hash_entry *ret =
855 (struct elf_cris_link_hash_entry *) entry;
856
857 /* Allocate the structure if it has not already been allocated by a
858 subclass. */
859 if (ret == (struct elf_cris_link_hash_entry *) NULL)
860 ret = ((struct elf_cris_link_hash_entry *)
861 bfd_hash_allocate (table,
862 sizeof (struct elf_cris_link_hash_entry)));
863 if (ret == (struct elf_cris_link_hash_entry *) NULL)
864 return (struct bfd_hash_entry *) ret;
865
866 /* Call the allocation method of the superclass. */
867 ret = ((struct elf_cris_link_hash_entry *)
868 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
869 table, string));
870 if (ret != (struct elf_cris_link_hash_entry *) NULL)
871 {
872 ret->pcrel_relocs_copied = NULL;
873 ret->gotplt_refcount = 0;
874 ret->gotplt_offset = 0;
875 ret->dtp_refcount = 0;
876 ret->tprel_refcount = 0;
877 ret->reg_got_refcount = 0;
878 }
879
880 return (struct bfd_hash_entry *) ret;
881 }
882
883 /* Create a CRIS ELF linker hash table. */
884
885 static struct bfd_link_hash_table *
886 elf_cris_link_hash_table_create (bfd *abfd)
887 {
888 struct elf_cris_link_hash_table *ret;
889 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
890
891 ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt));
892 if (ret == (struct elf_cris_link_hash_table *) NULL)
893 return NULL;
894
895 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
896 elf_cris_link_hash_newfunc,
897 sizeof (struct elf_cris_link_hash_entry),
898 CRIS_ELF_DATA))
899 {
900 free (ret);
901 return NULL;
902 }
903
904 /* Initialize to skip over the first three entries in the gotplt; they
905 are used for run-time symbol evaluation. */
906 ret->next_gotplt_entry = 12;
907
908 return &ret->root.root;
909 }
910 \f
911 /* Perform a single relocation. By default we use the standard BFD
912 routines, with a few tweaks. */
913
914 static bfd_reloc_status_type
915 cris_final_link_relocate (reloc_howto_type * howto,
916 bfd * input_bfd,
917 asection * input_section,
918 bfd_byte * contents,
919 Elf_Internal_Rela * rel,
920 bfd_vma relocation)
921 {
922 bfd_reloc_status_type r;
923 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
924
925 /* PC-relative relocations are relative to the position *after*
926 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
927 not a single byte, since PC must be 16-bit-aligned. */
928 switch (r_type)
929 {
930 /* Check that the 16-bit GOT relocs are positive. */
931 case R_CRIS_16_GOTPLT:
932 case R_CRIS_16_GOT:
933 if ((bfd_signed_vma) relocation < 0)
934 return bfd_reloc_overflow;
935 break;
936
937 case R_CRIS_32_PLT_PCREL:
938 case R_CRIS_32_PCREL:
939 relocation -= 2;
940 /* Fall through. */
941 case R_CRIS_8_PCREL:
942 case R_CRIS_16_PCREL:
943 relocation -= 2;
944 break;
945
946 default:
947 break;
948 }
949
950 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
951 contents, rel->r_offset,
952 relocation, rel->r_addend);
953 return r;
954 }
955 \f
956
957 /* The number of errors left before we stop outputting reloc-specific
958 explanatory messages. By coincidence, this works nicely together
959 with the default number of messages you'll get from LD about
960 "relocation truncated to fit" messages before you get an
961 "additional relocation overflows omitted from the output". */
962 static int additional_relocation_error_msg_count = 10;
963
964 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
965 copied, for further comments. */
966
967 static bfd_boolean
968 cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
969 struct bfd_link_info *info,
970 bfd *input_bfd,
971 asection *input_section,
972 bfd_byte *contents,
973 Elf_Internal_Rela *relocs,
974 Elf_Internal_Sym *local_syms,
975 asection **local_sections)
976 {
977 struct elf_cris_link_hash_table * htab;
978 bfd *dynobj;
979 Elf_Internal_Shdr *symtab_hdr;
980 struct elf_link_hash_entry **sym_hashes;
981 bfd_vma *local_got_offsets;
982 asection *sgot;
983 asection *splt;
984 asection *sreloc;
985 Elf_Internal_Rela *rel;
986 Elf_Internal_Rela *relend;
987 asection *srelgot;
988
989 htab = elf_cris_hash_table (info);
990 if (htab == NULL)
991 return FALSE;
992
993 dynobj = htab->root.dynobj;
994 local_got_offsets = elf_local_got_offsets (input_bfd);
995 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
996 sym_hashes = elf_sym_hashes (input_bfd);
997 relend = relocs + input_section->reloc_count;
998
999 sgot = NULL;
1000 splt = NULL;
1001 sreloc = NULL;
1002 srelgot = NULL;
1003
1004 if (dynobj != NULL)
1005 {
1006 splt = htab->root.splt;
1007 sgot = htab->root.sgot;
1008 }
1009
1010 for (rel = relocs; rel < relend; rel ++)
1011 {
1012 reloc_howto_type *howto;
1013 unsigned long r_symndx;
1014 Elf_Internal_Sym *sym;
1015 asection *sec;
1016 struct elf_link_hash_entry *h;
1017 bfd_vma relocation;
1018 bfd_reloc_status_type r;
1019 const char *symname = NULL;
1020 enum elf_cris_reloc_type r_type;
1021
1022 r_type = ELF32_R_TYPE (rel->r_info);
1023
1024 if ( r_type == R_CRIS_GNU_VTINHERIT
1025 || r_type == R_CRIS_GNU_VTENTRY)
1026 continue;
1027
1028 r_symndx = ELF32_R_SYM (rel->r_info);
1029 howto = cris_elf_howto_table + r_type;
1030 h = NULL;
1031 sym = NULL;
1032 sec = NULL;
1033
1034 if (r_symndx < symtab_hdr->sh_info)
1035 {
1036 sym = local_syms + r_symndx;
1037 sec = local_sections [r_symndx];
1038 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1039
1040 symname = (bfd_elf_string_from_elf_section
1041 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1042 if (symname == NULL)
1043 symname = bfd_section_name (input_bfd, sec);
1044 }
1045 else
1046 {
1047 bfd_boolean warned, ignored;
1048 bfd_boolean unresolved_reloc;
1049
1050 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1051 r_symndx, symtab_hdr, sym_hashes,
1052 h, sec, relocation,
1053 unresolved_reloc, warned, ignored);
1054
1055 symname = h->root.root.string;
1056
1057 if (unresolved_reloc
1058 /* Perhaps we should detect the cases that
1059 sec->output_section is expected to be NULL like i386 and
1060 m68k, but apparently (and according to elfxx-ia64.c) all
1061 valid cases are where the symbol is defined in a shared
1062 object which we link dynamically against. This includes
1063 PLT relocs for which we've created a PLT entry and other
1064 relocs for which we're prepared to create dynamic
1065 relocations.
1066
1067 For now, new situations cause us to just err when
1068 sec->output_offset is NULL but the object with the symbol
1069 is *not* dynamically linked against. Thus this will
1070 automatically remind us so we can see if there are other
1071 valid cases we need to revisit. */
1072 && (sec->owner->flags & DYNAMIC) != 0)
1073 relocation = 0;
1074
1075 else if (h->root.type == bfd_link_hash_defined
1076 || h->root.type == bfd_link_hash_defweak)
1077 {
1078 /* Here follow the cases where the relocation value must
1079 be zero (or when further handling is simplified when
1080 zero). I can't claim to understand the various
1081 conditions and they weren't described in the files
1082 where I copied them from (elf32-m68k.c and
1083 elf32-i386.c), but let's mention examples of where
1084 they happen. FIXME: Perhaps define and use a
1085 dynamic_symbol_p function like ia64.
1086
1087 - When creating a shared library, we can have an
1088 ordinary relocation for a symbol defined in a shared
1089 library (perhaps the one we create). We then make
1090 the relocation value zero, as the value seen now will
1091 be added into the relocation addend in this shared
1092 library, but must be handled only at dynamic-link
1093 time. FIXME: Not sure this example covers the
1094 h->elf_link_hash_flags test, though it's there in
1095 other targets. */
1096 if (bfd_link_pic (info)
1097 && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1098 || !h->def_regular)
1099 && (input_section->flags & SEC_ALLOC) != 0
1100 && (r_type == R_CRIS_8
1101 || r_type == R_CRIS_16
1102 || r_type == R_CRIS_32
1103 || r_type == R_CRIS_8_PCREL
1104 || r_type == R_CRIS_16_PCREL
1105 || r_type == R_CRIS_32_PCREL))
1106 relocation = 0;
1107 else if (!bfd_link_relocatable (info) && unresolved_reloc
1108 && (_bfd_elf_section_offset (output_bfd, info,
1109 input_section,
1110 rel->r_offset)
1111 != (bfd_vma) -1))
1112 {
1113 _bfd_error_handler
1114 /* xgettext:c-format */
1115 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1116 input_bfd,
1117 input_section,
1118 cris_elf_howto_table[r_type].name,
1119 symname);
1120 bfd_set_error (bfd_error_bad_value);
1121 return FALSE;
1122 }
1123 }
1124 }
1125
1126 if (sec != NULL && discarded_section (sec))
1127 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1128 rel, 1, relend, howto, 0, contents);
1129
1130 if (bfd_link_relocatable (info))
1131 continue;
1132
1133 switch (r_type)
1134 {
1135 case R_CRIS_16_GOTPLT:
1136 case R_CRIS_32_GOTPLT:
1137 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1138 but we require a PLT, and the PLT handling will take care of
1139 filling in the PLT-specific GOT entry. For the GOT offset,
1140 calculate it as we do when filling it in for the .got.plt
1141 section. If we don't have a PLT, punt to GOT handling. */
1142 if (h != NULL
1143 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1144 {
1145 asection *sgotplt = htab->root.sgotplt;
1146 bfd_vma got_offset;
1147
1148 BFD_ASSERT (h->dynindx != -1);
1149 BFD_ASSERT (sgotplt != NULL);
1150
1151 got_offset
1152 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1153
1154 relocation = got_offset;
1155 break;
1156 }
1157
1158 /* We didn't make a PLT entry for this symbol. Maybe everything is
1159 folded into the GOT. Other than folding, this happens when
1160 statically linking PIC code, or when using -Bsymbolic. Check
1161 that we instead have a GOT entry as done for us by
1162 elf_cris_adjust_dynamic_symbol, and drop through into the
1163 ordinary GOT cases. This must not happen for the
1164 executable, because any reference it does to a function
1165 that is satisfied by a DSO must generate a PLT. We assume
1166 these call-specific relocs don't address non-functions. */
1167 if (h != NULL
1168 && (h->got.offset == (bfd_vma) -1
1169 || (!bfd_link_pic (info)
1170 && !(h->def_regular
1171 || (!h->def_dynamic
1172 && h->root.type == bfd_link_hash_undefweak)))))
1173 {
1174 _bfd_error_handler
1175 ((h->got.offset == (bfd_vma) -1)
1176 /* xgettext:c-format */
1177 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1178 " against symbol `%s'")
1179 /* xgettext:c-format */
1180 : _("%B, section %A: No PLT for relocation %s"
1181 " against symbol `%s'"),
1182 input_bfd,
1183 input_section,
1184 cris_elf_howto_table[r_type].name,
1185 (symname != NULL && symname[0] != '\0'
1186 ? symname : _("[whose name is lost]")));
1187
1188 /* FIXME: Perhaps blaming input is not the right thing to
1189 do; this is probably an internal error. But it is true
1190 that we didn't like that particular input. */
1191 bfd_set_error (bfd_error_bad_value);
1192 return FALSE;
1193 }
1194 /* Fall through. */
1195
1196 /* The size of the actual relocation is not used here; we only
1197 fill in the GOT table here. */
1198 case R_CRIS_16_GOT:
1199 case R_CRIS_32_GOT:
1200 {
1201 bfd_vma off;
1202
1203 /* Note that despite using RELA relocations, the .got contents
1204 is always filled in with the link-relative relocation
1205 value; the addend. */
1206
1207 if (h != NULL)
1208 {
1209 off = h->got.offset;
1210 BFD_ASSERT (off != (bfd_vma) -1);
1211
1212 if (!elf_hash_table (info)->dynamic_sections_created
1213 || (! bfd_link_pic (info)
1214 && (h->def_regular
1215 || h->type == STT_FUNC
1216 || h->needs_plt))
1217 || (bfd_link_pic (info)
1218 && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
1219 && h->def_regular))
1220 {
1221 /* This wasn't checked above for ! bfd_link_pic (info), but
1222 must hold there if we get here; the symbol must
1223 be defined in the regular program or be undefweak
1224 or be a function or otherwise need a PLT. */
1225 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1226 || bfd_link_pic (info)
1227 || h->def_regular
1228 || h->type == STT_FUNC
1229 || h->needs_plt
1230 || h->root.type == bfd_link_hash_undefweak);
1231
1232 /* This is actually a static link, or it is a
1233 -Bsymbolic link and the symbol is defined locally,
1234 or is undefweak, or the symbol was forced to be
1235 local because of a version file, or we're not
1236 creating a dynamic object. We must initialize this
1237 entry in the global offset table. Since the offset
1238 must always be a multiple of 4, we use the least
1239 significant bit to record whether we have
1240 initialized it already.
1241
1242 If this GOT entry should be runtime-initialized, we
1243 will create a .rela.got relocation entry to
1244 initialize the value. This is done in the
1245 finish_dynamic_symbol routine. */
1246 if ((off & 1) != 0)
1247 off &= ~1;
1248 else
1249 {
1250 bfd_put_32 (output_bfd, relocation,
1251 sgot->contents + off);
1252 h->got.offset |= 1;
1253 }
1254 }
1255 }
1256 else
1257 {
1258 BFD_ASSERT (local_got_offsets != NULL
1259 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1260
1261 off = local_got_offsets[r_symndx];
1262
1263 /* The offset must always be a multiple of 4. We use
1264 the least significant bit to record whether we have
1265 already generated the necessary reloc. */
1266 if ((off & 1) != 0)
1267 off &= ~1;
1268 else
1269 {
1270 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1271
1272 if (bfd_link_pic (info))
1273 {
1274 Elf_Internal_Rela outrel;
1275 bfd_byte *loc;
1276
1277 srelgot = htab->root.srelgot;
1278 BFD_ASSERT (srelgot != NULL);
1279
1280 outrel.r_offset = (sgot->output_section->vma
1281 + sgot->output_offset
1282 + off);
1283 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1284 outrel.r_addend = relocation;
1285 loc = srelgot->contents;
1286 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1287 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1288 }
1289
1290 local_got_offsets[r_symndx] |= 1;
1291 }
1292 }
1293
1294 relocation = sgot->output_offset + off;
1295 if (rel->r_addend != 0)
1296 {
1297 /* We can't do anything for a relocation which is against
1298 a symbol *plus offset*. GOT holds relocations for
1299 symbols. Make this an error; the compiler isn't
1300 allowed to pass us these kinds of things. */
1301 if (h == NULL)
1302 _bfd_error_handler
1303 /* xgettext:c-format */
1304 (_("%B, section %A: relocation %s with non-zero addend %d"
1305 " against local symbol"),
1306 input_bfd,
1307 input_section,
1308 cris_elf_howto_table[r_type].name,
1309 rel->r_addend);
1310 else
1311 _bfd_error_handler
1312 /* xgettext:c-format */
1313 (_("%B, section %A: relocation %s with non-zero addend %d"
1314 " against symbol `%s'"),
1315 input_bfd,
1316 input_section,
1317 cris_elf_howto_table[r_type].name,
1318 rel->r_addend,
1319 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1320
1321 bfd_set_error (bfd_error_bad_value);
1322 return FALSE;
1323 }
1324 }
1325 break;
1326
1327 case R_CRIS_32_GOTREL:
1328 /* This relocation must only be performed against local symbols.
1329 It's also ok when we link a program and the symbol is either
1330 defined in an ordinary (non-DSO) object or is undefined weak. */
1331 if (h != NULL
1332 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1333 && !(!bfd_link_pic (info)
1334 && (h->def_regular
1335 || (!h->def_dynamic
1336 && h->root.type == bfd_link_hash_undefweak))))
1337 {
1338 _bfd_error_handler
1339 /* xgettext:c-format */
1340 (_("%B, section %A: relocation %s is"
1341 " not allowed for global symbol: `%s'"),
1342 input_bfd,
1343 input_section,
1344 cris_elf_howto_table[r_type].name,
1345 symname);
1346 bfd_set_error (bfd_error_bad_value);
1347 return FALSE;
1348 }
1349
1350 /* This can happen if we get a link error with the input ELF
1351 variant mismatching the output variant. Emit an error so
1352 it's noticed if it happens elsewhere. */
1353 if (sgot == NULL)
1354 {
1355 _bfd_error_handler
1356 /* xgettext:c-format */
1357 (_("%B, section %A: relocation %s with no GOT created"),
1358 input_bfd,
1359 input_section,
1360 cris_elf_howto_table[r_type].name);
1361 bfd_set_error (bfd_error_bad_value);
1362 return FALSE;
1363 }
1364
1365 /* This relocation is like a PC-relative one, except the
1366 reference point is the location of GOT. Note that
1367 sgot->output_offset is not involved in this calculation. We
1368 always want the start of entire .got section, not the
1369 position after the reserved header. */
1370 relocation -= sgot->output_section->vma;
1371 break;
1372
1373 case R_CRIS_32_PLT_PCREL:
1374 /* Relocation is to the entry for this symbol in the
1375 procedure linkage table. */
1376
1377 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1378 without using the procedure linkage table. */
1379 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1380 break;
1381
1382 if (h->plt.offset == (bfd_vma) -1
1383 || splt == NULL)
1384 {
1385 /* We didn't make a PLT entry for this symbol. This
1386 happens when statically linking PIC code, or when
1387 using -Bsymbolic. */
1388 break;
1389 }
1390
1391 relocation = (splt->output_section->vma
1392 + splt->output_offset
1393 + h->plt.offset);
1394 break;
1395
1396 case R_CRIS_32_PLT_GOTREL:
1397 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1398 start of the .got section. See also comment at
1399 R_CRIS_32_GOT. */
1400 relocation -= sgot->output_section->vma;
1401
1402 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1403 without using the procedure linkage table. */
1404 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1405 break;
1406
1407 if (h->plt.offset == (bfd_vma) -1
1408 || splt == NULL)
1409 {
1410 /* We didn't make a PLT entry for this symbol. This
1411 happens when statically linking PIC code, or when
1412 using -Bsymbolic. */
1413 break;
1414 }
1415
1416 relocation = (splt->output_section->vma
1417 + splt->output_offset
1418 + h->plt.offset
1419 - sgot->output_section->vma);
1420 break;
1421
1422 case R_CRIS_8_PCREL:
1423 case R_CRIS_16_PCREL:
1424 case R_CRIS_32_PCREL:
1425 /* If the symbol was local, we need no shlib-specific handling. */
1426 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1427 || h->dynindx == -1)
1428 break;
1429
1430 /* Fall through. */
1431 case R_CRIS_8:
1432 case R_CRIS_16:
1433 case R_CRIS_32:
1434 if (bfd_link_pic (info)
1435 && r_symndx != STN_UNDEF
1436 && (input_section->flags & SEC_ALLOC) != 0
1437 && ((r_type != R_CRIS_8_PCREL
1438 && r_type != R_CRIS_16_PCREL
1439 && r_type != R_CRIS_32_PCREL)
1440 || (!SYMBOLIC_BIND (info, h)
1441 || (h != NULL && !h->def_regular))))
1442 {
1443 Elf_Internal_Rela outrel;
1444 bfd_byte *loc;
1445 bfd_boolean skip, relocate;
1446
1447 /* When generating a shared object, these relocations
1448 are copied into the output file to be resolved at run
1449 time. */
1450
1451 if (sreloc == NULL)
1452 {
1453 sreloc = _bfd_elf_get_dynamic_reloc_section
1454 (dynobj, input_section, /*rela?*/ TRUE);
1455 /* The section should have been created in cris_elf_check_relocs,
1456 but that function will not be called for objects which fail in
1457 cris_elf_merge_private_bfd_data. */
1458 if (sreloc == NULL)
1459 {
1460 bfd_set_error (bfd_error_bad_value);
1461 return FALSE;
1462 }
1463 }
1464
1465 skip = FALSE;
1466 relocate = FALSE;
1467
1468 outrel.r_offset =
1469 _bfd_elf_section_offset (output_bfd, info, input_section,
1470 rel->r_offset);
1471 if (outrel.r_offset == (bfd_vma) -1)
1472 skip = TRUE;
1473 else if (outrel.r_offset == (bfd_vma) -2
1474 /* For now, undefined weak symbols with non-default
1475 visibility (yielding 0), like exception info for
1476 discarded sections, will get a R_CRIS_NONE
1477 relocation rather than no relocation, because we
1478 notice too late that the symbol doesn't need a
1479 relocation. */
1480 || (h != NULL
1481 && h->root.type == bfd_link_hash_undefweak
1482 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1483 skip = TRUE, relocate = TRUE;
1484 outrel.r_offset += (input_section->output_section->vma
1485 + input_section->output_offset);
1486
1487 if (skip)
1488 memset (&outrel, 0, sizeof outrel);
1489 /* h->dynindx may be -1 if the symbol was marked to
1490 become local. */
1491 else if (h != NULL
1492 && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1493 || !h->def_regular))
1494 {
1495 BFD_ASSERT (h->dynindx != -1);
1496 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1497 outrel.r_addend = relocation + rel->r_addend;
1498 }
1499 else
1500 {
1501 outrel.r_addend = relocation + rel->r_addend;
1502
1503 if (r_type == R_CRIS_32)
1504 {
1505 relocate = TRUE;
1506 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1507 }
1508 else
1509 {
1510 long indx;
1511
1512 if (bfd_is_abs_section (sec))
1513 indx = 0;
1514 else if (sec == NULL || sec->owner == NULL)
1515 {
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1518 }
1519 else
1520 {
1521 asection *osec;
1522
1523 /* We are turning this relocation into one
1524 against a section symbol. It would be
1525 proper to subtract the symbol's value,
1526 osec->vma, from the emitted reloc addend,
1527 but ld.so expects buggy relocs. */
1528 osec = sec->output_section;
1529 indx = elf_section_data (osec)->dynindx;
1530 if (indx == 0)
1531 {
1532 osec = htab->root.text_index_section;
1533 indx = elf_section_data (osec)->dynindx;
1534 }
1535 BFD_ASSERT (indx != 0);
1536 }
1537
1538 outrel.r_info = ELF32_R_INFO (indx, r_type);
1539 }
1540 }
1541
1542 loc = sreloc->contents;
1543 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1544 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1545
1546 /* This reloc will be computed at runtime, so there's no
1547 need to do anything now, except for R_CRIS_32 relocations
1548 that have been turned into R_CRIS_RELATIVE. */
1549 if (!relocate)
1550 continue;
1551 }
1552
1553 break;
1554
1555 case R_CRIS_16_DTPREL:
1556 case R_CRIS_32_DTPREL:
1557 /* This relocation must only be performed against local
1558 symbols, or to sections that are not loadable. It's also
1559 ok when we link a program and the symbol is defined in an
1560 ordinary (non-DSO) object (if it's undefined there, we've
1561 already seen an error). */
1562 if (h != NULL
1563 && (input_section->flags & SEC_ALLOC) != 0
1564 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1565 && (bfd_link_pic (info)
1566 || (!h->def_regular
1567 && h->root.type != bfd_link_hash_undefined)))
1568 {
1569 _bfd_error_handler
1570 ((h->root.type == bfd_link_hash_undefined)
1571 /* We shouldn't get here for GCC-emitted code. */
1572 /* xgettext:c-format */
1573 ? _("%B, section %A: relocation %s has an undefined"
1574 " reference to `%s', perhaps a declaration mixup?")
1575 /* xgettext:c-format */
1576 : _("%B, section %A: relocation %s is"
1577 " not allowed for `%s', a global symbol with default"
1578 " visibility, perhaps a declaration mixup?"),
1579 input_bfd,
1580 input_section,
1581 cris_elf_howto_table[r_type].name,
1582 symname != NULL && symname[0] != '\0'
1583 ? symname : _("[whose name is lost]"));
1584 bfd_set_error (bfd_error_bad_value);
1585 return FALSE;
1586 }
1587
1588 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1589 || htab->dtpmod_refcount != 0);
1590
1591 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1592 already done so. Note that we do this in .got.plt, not
1593 in .got, as .got.plt contains the first part, still the
1594 reloc is against .got, because the linker script directs
1595 (is required to direct) them both into .got. */
1596 if (htab->dtpmod_refcount > 0
1597 && (input_section->flags & SEC_ALLOC) != 0)
1598 {
1599 asection *sgotplt = htab->root.sgotplt;
1600 BFD_ASSERT (sgotplt != NULL);
1601
1602 if (bfd_link_pic (info))
1603 {
1604 Elf_Internal_Rela outrel;
1605 bfd_byte *loc;
1606
1607 srelgot = htab->root.srelgot;
1608 BFD_ASSERT (srelgot != NULL);
1609 loc = srelgot->contents;
1610 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1611
1612 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1613 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1614 outrel.r_offset = (sgotplt->output_section->vma
1615 + sgotplt->output_offset
1616 + 12);
1617 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1618 outrel.r_addend = 0;
1619 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1620 }
1621 else
1622 {
1623 /* For an executable, the GOT entry contents is known. */
1624 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1625 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1626 }
1627
1628 /* Reverse the sign to mark that we've emitted the
1629 required GOT entry. */
1630 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1631 }
1632
1633 /* The relocation is the offset from the start of the module
1634 TLS block to the (local) symbol. */
1635 relocation -= elf_hash_table (info)->tls_sec == NULL
1636 ? 0 : elf_hash_table (info)->tls_sec->vma;
1637 break;
1638
1639 case R_CRIS_32_GD:
1640 if (bfd_link_pic (info))
1641 {
1642 bfd_set_error (bfd_error_invalid_operation);
1643
1644 /* We've already informed in cris_elf_check_relocs that
1645 this is an error. */
1646 return FALSE;
1647 }
1648 /* Fall through. */
1649
1650 case R_CRIS_16_GOT_GD:
1651 case R_CRIS_32_GOT_GD:
1652 if (rel->r_addend != 0)
1653 {
1654 /* We can't do anything for a relocation which is against a
1655 symbol *plus offset*. The GOT holds relocations for
1656 symbols. Make this an error; the compiler isn't allowed
1657 to pass us these kinds of things. */
1658 _bfd_error_handler
1659 /* xgettext:c-format */
1660 (_("%B, section %A: relocation %s with non-zero addend %d"
1661 " against symbol `%s'"),
1662 input_bfd,
1663 input_section,
1664 cris_elf_howto_table[r_type].name,
1665 rel->r_addend,
1666 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1667
1668 bfd_set_error (bfd_error_bad_value);
1669 return FALSE;
1670 }
1671
1672 if (!bfd_link_pic (info)
1673 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1674 {
1675 /* Known contents of the GOT. */
1676 bfd_vma off;
1677
1678 /* The symbol is defined in the program, so just write
1679 (1, known_tpoffset) into the GOT. */
1680 relocation -= elf_hash_table (info)->tls_sec->vma;
1681
1682 if (h != NULL)
1683 {
1684 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1685 ? h->got.offset + 4 : h->got.offset;
1686 }
1687 else
1688 {
1689 off = local_got_offsets[r_symndx];
1690 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1691 off += 4;
1692 }
1693
1694 /* We use bit 1 of the offset as a flag for GOT entry with
1695 the R_CRIS_DTP reloc, setting it when we've emitted the
1696 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1697 relocs. */
1698 if ((off & 2) == 0)
1699 {
1700 off &= ~3;
1701
1702 if (h != NULL)
1703 h->got.offset |= 2;
1704 else
1705 local_got_offsets[r_symndx] |= 2;
1706
1707 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1708 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1709 }
1710 else
1711 off &= ~3;
1712
1713 relocation = sgot->output_offset + off
1714 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1715 }
1716 else
1717 {
1718 /* Not all parts of the GOT entry are known; emit a real
1719 relocation. */
1720 bfd_vma off;
1721
1722 if (h != NULL)
1723 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1724 ? h->got.offset + 4 : h->got.offset;
1725 else
1726 {
1727 off = local_got_offsets[r_symndx];
1728 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1729 off += 4;
1730 }
1731
1732 /* See above re bit 1 and bit 0 usage. */
1733 if ((off & 2) == 0)
1734 {
1735 Elf_Internal_Rela outrel;
1736 bfd_byte *loc;
1737
1738 off &= ~3;
1739
1740 if (h != NULL)
1741 h->got.offset |= 2;
1742 else
1743 local_got_offsets[r_symndx] |= 2;
1744
1745 /* Clear the target contents of the GOT (just as a
1746 gesture; it's already cleared on allocation): this
1747 relocation is not like the other dynrelocs. */
1748 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1749 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1750
1751 srelgot = htab->root.srelgot;
1752 BFD_ASSERT (srelgot != NULL);
1753
1754 if (h != NULL && h->dynindx != -1)
1755 {
1756 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1757 relocation = 0;
1758 }
1759 else
1760 {
1761 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1762
1763 /* NULL if we had an error. */
1764 relocation -= elf_hash_table (info)->tls_sec == NULL
1765 ? 0 : elf_hash_table (info)->tls_sec->vma;
1766 }
1767
1768 outrel.r_offset = (sgot->output_section->vma
1769 + sgot->output_offset
1770 + off);
1771 outrel.r_addend = relocation;
1772 loc = srelgot->contents;
1773 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1774
1775 /* NULL if we had an error. */
1776 if (srelgot->contents != NULL)
1777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1778 }
1779 else
1780 off &= ~3;
1781
1782 relocation = sgot->output_offset + off
1783 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1784 }
1785
1786 /* The GOT-relative offset to the GOT entry is the
1787 relocation, or for R_CRIS_32_GD, the actual address of
1788 the GOT entry. */
1789 break;
1790
1791 case R_CRIS_32_IE:
1792 if (bfd_link_pic (info))
1793 {
1794 bfd_set_error (bfd_error_invalid_operation);
1795
1796 /* We've already informed in cris_elf_check_relocs that
1797 this is an error. */
1798 return FALSE;
1799 }
1800 /* Fall through. */
1801
1802 case R_CRIS_32_GOT_TPREL:
1803 case R_CRIS_16_GOT_TPREL:
1804 if (rel->r_addend != 0)
1805 {
1806 /* We can't do anything for a relocation which is
1807 against a symbol *plus offset*. GOT holds
1808 relocations for symbols. Make this an error; the
1809 compiler isn't allowed to pass us these kinds of
1810 things. */
1811 _bfd_error_handler
1812 /* xgettext:c-format */
1813 (_("%B, section %A: relocation %s with non-zero addend %d"
1814 " against symbol `%s'"),
1815 input_bfd,
1816 input_section,
1817 cris_elf_howto_table[r_type].name,
1818 rel->r_addend,
1819 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1820 bfd_set_error (bfd_error_bad_value);
1821 return FALSE;
1822 }
1823
1824 if (!bfd_link_pic (info)
1825 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1826 {
1827 /* Known contents of the GOT. */
1828 bfd_vma off;
1829
1830 /* The symbol is defined in the program, so just write
1831 the -prog_tls_size+known_tpoffset into the GOT. */
1832 relocation -= elf_hash_table (info)->tls_sec->vma;
1833 relocation -= elf_hash_table (info)->tls_size;
1834
1835 if (h != NULL)
1836 off = h->got.offset;
1837 else
1838 off = local_got_offsets[r_symndx];
1839
1840 /* Bit 0 is used to mark whether we've emitted the required
1841 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1842 is used similarly for R_CRIS_DTP, see above. */
1843 if ((off & 1) == 0)
1844 {
1845 off &= ~3;
1846
1847 if (h != NULL)
1848 h->got.offset |= 1;
1849 else
1850 local_got_offsets[r_symndx] |= 1;
1851
1852 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1853 }
1854 else
1855 off &= ~3;
1856
1857 relocation = sgot->output_offset + off
1858 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1859 }
1860 else
1861 {
1862 /* Emit a real relocation. */
1863 bfd_vma off;
1864
1865 if (h != NULL)
1866 off = h->got.offset;
1867 else
1868 off = local_got_offsets[r_symndx];
1869
1870 /* See above re usage of bit 0 and 1. */
1871 if ((off & 1) == 0)
1872 {
1873 Elf_Internal_Rela outrel;
1874 bfd_byte *loc;
1875
1876 off &= ~3;
1877
1878 if (h != NULL)
1879 h->got.offset |= 1;
1880 else
1881 local_got_offsets[r_symndx] |= 1;
1882
1883 srelgot = htab->root.srelgot;
1884 BFD_ASSERT (srelgot != NULL);
1885
1886 if (h != NULL && h->dynindx != -1)
1887 {
1888 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1889 relocation = 0;
1890 }
1891 else
1892 {
1893 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1894
1895 /* NULL if we had an error. */
1896 relocation -= elf_hash_table (info)->tls_sec == NULL
1897 ? 0 : elf_hash_table (info)->tls_sec->vma;
1898 }
1899
1900 /* Just "define" the initial contents in some
1901 semi-logical way. */
1902 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1903
1904 outrel.r_offset = (sgot->output_section->vma
1905 + sgot->output_offset
1906 + off);
1907 outrel.r_addend = relocation;
1908 loc = srelgot->contents;
1909 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1910 /* NULL if we had an error. */
1911 if (srelgot->contents != NULL)
1912 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1913 }
1914 else
1915 off &= ~3;
1916
1917 relocation = sgot->output_offset + off
1918 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1919 }
1920
1921 /* The GOT-relative offset to the GOT entry is the relocation,
1922 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1923 break;
1924
1925 case R_CRIS_16_TPREL:
1926 case R_CRIS_32_TPREL:
1927 /* This relocation must only be performed against symbols
1928 defined in an ordinary (non-DSO) object. */
1929 if (bfd_link_pic (info))
1930 {
1931 bfd_set_error (bfd_error_invalid_operation);
1932
1933 /* We've already informed in cris_elf_check_relocs that
1934 this is an error. */
1935 return FALSE;
1936 }
1937
1938 if (h != NULL
1939 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1940 && !(h->def_regular || ELF_COMMON_DEF_P (h))
1941 /* If it's undefined, then an error message has already
1942 been emitted. */
1943 && h->root.type != bfd_link_hash_undefined)
1944 {
1945 _bfd_error_handler
1946 /* xgettext:c-format */
1947 (_("%B, section %A: relocation %s is"
1948 " not allowed for symbol: `%s'"
1949 " which is defined outside the program,"
1950 " perhaps a declaration mixup?"),
1951 input_bfd,
1952 input_section,
1953 cris_elf_howto_table[r_type].name,
1954 symname);
1955 bfd_set_error (bfd_error_bad_value);
1956 return FALSE;
1957 }
1958
1959 /* NULL if we had an error. */
1960 relocation -= elf_hash_table (info)->tls_sec == NULL
1961 ? 0
1962 : (elf_hash_table (info)->tls_sec->vma
1963 + elf_hash_table (info)->tls_size);
1964
1965 /* The TLS-relative offset is the relocation. */
1966 break;
1967
1968 default:
1969 BFD_FAIL ();
1970 return FALSE;
1971 }
1972
1973 r = cris_final_link_relocate (howto, input_bfd, input_section,
1974 contents, rel, relocation);
1975
1976 if (r != bfd_reloc_ok)
1977 {
1978 const char * msg = (const char *) NULL;
1979
1980 switch (r)
1981 {
1982 case bfd_reloc_overflow:
1983 (*info->callbacks->reloc_overflow)
1984 (info, (h ? &h->root : NULL), symname, howto->name,
1985 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1986 if (additional_relocation_error_msg_count > 0)
1987 {
1988 additional_relocation_error_msg_count--;
1989 switch (r_type)
1990 {
1991 case R_CRIS_16_GOTPLT:
1992 case R_CRIS_16_GOT:
1993
1994 /* Not just TLS is involved here, so we make
1995 generation and message depend on -fPIC/-fpic
1996 only. */
1997 case R_CRIS_16_GOT_TPREL:
1998 case R_CRIS_16_GOT_GD:
1999 _bfd_error_handler
2000 (_("(too many global variables for -fpic:"
2001 " recompile with -fPIC)"));
2002 break;
2003
2004 case R_CRIS_16_TPREL:
2005 case R_CRIS_16_DTPREL:
2006 _bfd_error_handler
2007 (_("(thread-local data too big for -fpic or"
2008 " -msmall-tls: recompile with -fPIC or"
2009 " -mno-small-tls)"));
2010 break;
2011
2012 /* No known cause for overflow for other relocs. */
2013 default:
2014 break;
2015 }
2016 }
2017 break;
2018
2019 case bfd_reloc_undefined:
2020 (*info->callbacks->undefined_symbol)
2021 (info, symname, input_bfd, input_section, rel->r_offset, TRUE);
2022 break;
2023
2024 case bfd_reloc_outofrange:
2025 msg = _("internal error: out of range error");
2026 break;
2027
2028 case bfd_reloc_notsupported:
2029 msg = _("internal error: unsupported relocation error");
2030 break;
2031
2032 case bfd_reloc_dangerous:
2033 msg = _("internal error: dangerous relocation");
2034 break;
2035
2036 default:
2037 msg = _("internal error: unknown error");
2038 break;
2039 }
2040
2041 if (msg)
2042 (*info->callbacks->warning) (info, msg, symname, input_bfd,
2043 input_section, rel->r_offset);
2044 }
2045 }
2046
2047 return TRUE;
2048 }
2049 \f
2050 /* Finish up dynamic symbol handling. We set the contents of various
2051 dynamic sections here. */
2052
2053 static bfd_boolean
2054 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2055 struct bfd_link_info *info,
2056 struct elf_link_hash_entry *h,
2057 Elf_Internal_Sym *sym)
2058 {
2059 struct elf_cris_link_hash_table * htab;
2060 bfd *dynobj;
2061
2062 /* Where in the plt entry to put values. */
2063 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2064
2065 /* What offset to add to the distance to the first PLT entry for the
2066 value at plt_off3. */
2067 int plt_off3_value_bias = 4;
2068
2069 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2070 for PIC and non-PIC for v32 and pre-v32). */
2071 int plt_stub_offset = 8;
2072 int plt_entry_size = PLT_ENTRY_SIZE;
2073 const bfd_byte *plt_entry = elf_cris_plt_entry;
2074 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2075
2076 htab = elf_cris_hash_table (info);
2077 if (htab == NULL)
2078 return FALSE;
2079
2080 /* Adjust the various PLT entry offsets. */
2081 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2082 {
2083 plt_off2 = 14;
2084 plt_off3 = 20;
2085 plt_off3_value_bias = -2;
2086 plt_stub_offset = 12;
2087 plt_entry_size = PLT_ENTRY_SIZE_V32;
2088 plt_entry = elf_cris_plt_entry_v32;
2089 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2090 }
2091
2092 dynobj = htab->root.dynobj;
2093
2094 if (h->plt.offset != (bfd_vma) -1)
2095 {
2096 asection *splt;
2097 asection *sgotplt;
2098 asection *srela;
2099 bfd_vma got_base;
2100
2101 bfd_vma gotplt_offset
2102 = elf_cris_hash_entry (h)->gotplt_offset;
2103 Elf_Internal_Rela rela;
2104 bfd_byte *loc;
2105 bfd_boolean has_gotplt = gotplt_offset != 0;
2106
2107 /* Get the index in the .rela.plt relocations for the .got.plt
2108 entry that corresponds to this symbol.
2109 We have to count backwards here, and the result is only valid
2110 as an index into .rela.plt. We also have to undo the effect
2111 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2112 .got.plt) for which gotplt_offset is adjusted, because while
2113 that entry goes into .got.plt, its relocation goes into
2114 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2115 processed as part of the runtime lazy .rela.plt relocation).
2116 FIXME: There be literal constants here... */
2117 bfd_vma rela_plt_index
2118 = (htab->dtpmod_refcount != 0
2119 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2120
2121 /* Get the offset into the .got table of the entry that corresponds
2122 to this function. Note that we embed knowledge that "incoming"
2123 .got goes after .got.plt in the output without padding (pointer
2124 aligned). However, that knowledge is present in several other
2125 places too. */
2126 bfd_vma got_offset
2127 = (has_gotplt
2128 ? gotplt_offset
2129 : h->got.offset + htab->next_gotplt_entry);
2130
2131 /* This symbol has an entry in the procedure linkage table. Set it
2132 up. */
2133
2134 BFD_ASSERT (h->dynindx != -1);
2135
2136 splt = htab->root.splt;
2137 sgotplt = htab->root.sgotplt;
2138 srela = htab->root.srelplt;
2139 BFD_ASSERT (splt != NULL && sgotplt != NULL
2140 && (! has_gotplt || srela != NULL));
2141
2142 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2143
2144 /* Fill in the entry in the procedure linkage table. */
2145 if (! bfd_link_pic (info))
2146 {
2147 memcpy (splt->contents + h->plt.offset, plt_entry,
2148 plt_entry_size);
2149
2150 /* We need to enter the absolute address of the GOT entry here. */
2151 bfd_put_32 (output_bfd, got_base + got_offset,
2152 splt->contents + h->plt.offset + plt_off1);
2153 }
2154 else
2155 {
2156 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2157 plt_entry_size);
2158 bfd_put_32 (output_bfd, got_offset,
2159 splt->contents + h->plt.offset + plt_off1);
2160 }
2161
2162 /* Fill in the plt entry and make a relocation, if this is a "real"
2163 PLT entry. */
2164 if (has_gotplt)
2165 {
2166 /* Fill in the offset to the reloc table. */
2167 bfd_put_32 (output_bfd,
2168 rela_plt_index * sizeof (Elf32_External_Rela),
2169 splt->contents + h->plt.offset + plt_off2);
2170
2171 /* Fill in the offset to the first PLT entry, where to "jump". */
2172 bfd_put_32 (output_bfd,
2173 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2174 splt->contents + h->plt.offset + plt_off3);
2175
2176 /* Fill in the entry in the global offset table with the address of
2177 the relocating stub. */
2178 bfd_put_32 (output_bfd,
2179 (splt->output_section->vma
2180 + splt->output_offset
2181 + h->plt.offset
2182 + plt_stub_offset),
2183 sgotplt->contents + got_offset);
2184
2185 /* Fill in the entry in the .rela.plt section. */
2186 rela.r_offset = (sgotplt->output_section->vma
2187 + sgotplt->output_offset
2188 + got_offset);
2189 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2190 rela.r_addend = 0;
2191 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2192 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2193 }
2194
2195 if (!h->def_regular)
2196 {
2197 /* Mark the symbol as undefined, rather than as defined in
2198 the .plt section. Leave the value alone. */
2199 sym->st_shndx = SHN_UNDEF;
2200
2201 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2202 know whether resetting the value is significant; if it really
2203 is, rather than a quirk or bug in the sparc port, then I
2204 believe we'd see this elsewhere. */
2205 /* If the symbol is weak, we do need to clear the value.
2206 Otherwise, the PLT entry would provide a definition for
2207 the symbol even if the symbol wasn't defined anywhere,
2208 and so the symbol would never be NULL. */
2209 if (!h->ref_regular_nonweak)
2210 sym->st_value = 0;
2211 }
2212 }
2213
2214 /* For an ordinary program, we emit .got relocs only for symbols that
2215 are in the dynamic-symbols table and are either defined by the
2216 program or are undefined weak symbols, or are function symbols
2217 where we do not output a PLT: the PLT reloc was output above and all
2218 references to the function symbol are redirected to the PLT. */
2219 if (h->got.offset != (bfd_vma) -1
2220 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2221 && (bfd_link_pic (info)
2222 || (h->dynindx != -1
2223 && h->plt.offset == (bfd_vma) -1
2224 && !h->def_regular
2225 && h->root.type != bfd_link_hash_undefweak)))
2226 {
2227 asection *sgot;
2228 asection *srela;
2229 Elf_Internal_Rela rela;
2230 bfd_byte *loc;
2231 bfd_byte *where;
2232
2233 /* This symbol has an entry in the global offset table. Set it up. */
2234
2235 sgot = htab->root.sgot;
2236 srela = htab->root.srelgot;
2237 BFD_ASSERT (sgot != NULL && srela != NULL);
2238
2239 rela.r_offset = (sgot->output_section->vma
2240 + sgot->output_offset
2241 + (h->got.offset &~ (bfd_vma) 1));
2242
2243 /* If this is a static link, or it is a -Bsymbolic link and the
2244 symbol is defined locally or was forced to be local because
2245 of a version file, we just want to emit a RELATIVE reloc.
2246 The entry in the global offset table will already have been
2247 initialized in the relocate_section function. */
2248 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2249 if (! elf_hash_table (info)->dynamic_sections_created
2250 || (bfd_link_pic (info)
2251 && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
2252 && h->def_regular))
2253 {
2254 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2255 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2256 }
2257 else
2258 {
2259 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2260 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2261 rela.r_addend = 0;
2262 }
2263
2264 loc = srela->contents;
2265 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2266 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2267 }
2268
2269 if (h->needs_copy)
2270 {
2271 asection *s;
2272 Elf_Internal_Rela rela;
2273 bfd_byte *loc;
2274
2275 /* This symbol needs a copy reloc. Set it up. */
2276
2277 BFD_ASSERT (h->dynindx != -1
2278 && (h->root.type == bfd_link_hash_defined
2279 || h->root.type == bfd_link_hash_defweak));
2280
2281 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2282 s = htab->root.sreldynrelro;
2283 else
2284 s = htab->root.srelbss;
2285
2286 rela.r_offset = (h->root.u.def.value
2287 + h->root.u.def.section->output_section->vma
2288 + h->root.u.def.section->output_offset);
2289 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2290 rela.r_addend = 0;
2291 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2292 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2293 }
2294
2295 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2296 if (h == elf_hash_table (info)->hdynamic
2297 || h == elf_hash_table (info)->hgot)
2298 sym->st_shndx = SHN_ABS;
2299
2300 return TRUE;
2301 }
2302 \f
2303 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2304 offsets were changed, as part of -z combreloc handling, from those we
2305 computed. */
2306
2307 static bfd_boolean
2308 elf_cris_finish_dynamic_sections (bfd *output_bfd,
2309 struct bfd_link_info *info)
2310 {
2311 bfd *dynobj;
2312 asection *sgot;
2313 asection *sdyn;
2314
2315 dynobj = elf_hash_table (info)->dynobj;
2316
2317 sgot = elf_hash_table (info)->sgotplt;
2318 BFD_ASSERT (sgot != NULL);
2319 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2320
2321 if (elf_hash_table (info)->dynamic_sections_created)
2322 {
2323 asection *splt;
2324 Elf32_External_Dyn *dyncon, *dynconend;
2325
2326 splt = elf_hash_table (info)->splt;
2327 BFD_ASSERT (splt != NULL && sdyn != NULL);
2328
2329 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2330 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2331 for (; dyncon < dynconend; dyncon++)
2332 {
2333 Elf_Internal_Dyn dyn;
2334 asection *s;
2335
2336 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2337
2338 switch (dyn.d_tag)
2339 {
2340 default:
2341 break;
2342
2343 case DT_PLTGOT:
2344 dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset;
2345 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2346 break;
2347
2348 case DT_JMPREL:
2349 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2350 if all symbols are found in the .got (not .got.plt). */
2351 s = elf_hash_table (info)->srelplt;
2352 dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma
2353 + s->output_offset) : 0;
2354 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2355 break;
2356
2357 case DT_PLTRELSZ:
2358 s = elf_hash_table (info)->srelplt;
2359 if (s == NULL)
2360 dyn.d_un.d_val = 0;
2361 else
2362 dyn.d_un.d_val = s->size;
2363 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2364 break;
2365 }
2366 }
2367
2368 /* Fill in the first entry in the procedure linkage table. */
2369 if (splt->size > 0)
2370 {
2371 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2372 {
2373 if (bfd_link_pic (info))
2374 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2375 PLT_ENTRY_SIZE_V32);
2376 else
2377 {
2378 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2379 PLT_ENTRY_SIZE_V32);
2380 bfd_put_32 (output_bfd,
2381 sgot->output_section->vma
2382 + sgot->output_offset + 4,
2383 splt->contents + 4);
2384
2385 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2386 = PLT_ENTRY_SIZE_V32;
2387 }
2388 }
2389 else
2390 {
2391 if (bfd_link_pic (info))
2392 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2393 PLT_ENTRY_SIZE);
2394 else
2395 {
2396 memcpy (splt->contents, elf_cris_plt0_entry,
2397 PLT_ENTRY_SIZE);
2398 bfd_put_32 (output_bfd,
2399 sgot->output_section->vma
2400 + sgot->output_offset + 4,
2401 splt->contents + 6);
2402 bfd_put_32 (output_bfd,
2403 sgot->output_section->vma
2404 + sgot->output_offset + 8,
2405 splt->contents + 14);
2406
2407 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2408 = PLT_ENTRY_SIZE;
2409 }
2410 }
2411 }
2412 }
2413
2414 /* Fill in the first three entries in the global offset table. */
2415 if (sgot->size > 0)
2416 {
2417 if (sdyn == NULL)
2418 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2419 else
2420 bfd_put_32 (output_bfd,
2421 sdyn->output_section->vma + sdyn->output_offset,
2422 sgot->contents);
2423 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2424 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2425 }
2426
2427 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2428
2429 return TRUE;
2430 }
2431 \f
2432 /* Return the section that should be marked against GC for a given
2433 relocation. */
2434
2435 static asection *
2436 cris_elf_gc_mark_hook (asection *sec,
2437 struct bfd_link_info *info,
2438 Elf_Internal_Rela *rel,
2439 struct elf_link_hash_entry *h,
2440 Elf_Internal_Sym *sym)
2441 {
2442 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2443 if (h != NULL)
2444 switch (r_type)
2445 {
2446 case R_CRIS_GNU_VTINHERIT:
2447 case R_CRIS_GNU_VTENTRY:
2448 return NULL;
2449
2450 default:
2451 break;
2452 }
2453
2454 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2455 }
2456
2457 /* Update the got entry reference counts for the section being removed. */
2458
2459 static bfd_boolean
2460 cris_elf_gc_sweep_hook (bfd *abfd,
2461 struct bfd_link_info *info,
2462 asection *sec,
2463 const Elf_Internal_Rela *relocs)
2464 {
2465 struct elf_cris_link_hash_table * htab;
2466 Elf_Internal_Shdr *symtab_hdr;
2467 struct elf_link_hash_entry **sym_hashes;
2468 bfd_signed_vma *local_got_refcounts;
2469 const Elf_Internal_Rela *rel, *relend;
2470 bfd *dynobj;
2471 asection *sgot;
2472 asection *srelgot;
2473
2474 if (bfd_link_relocatable (info))
2475 return TRUE;
2476
2477 dynobj = elf_hash_table (info)->dynobj;
2478 if (dynobj == NULL)
2479 return TRUE;
2480
2481 htab = elf_cris_hash_table (info);
2482 if (htab == NULL)
2483 return FALSE;
2484
2485 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2486 sym_hashes = elf_sym_hashes (abfd);
2487 local_got_refcounts = elf_local_got_refcounts (abfd);
2488
2489 sgot = htab->root.sgot;
2490 srelgot = htab->root.srelgot;
2491
2492 relend = relocs + sec->reloc_count;
2493 for (rel = relocs; rel < relend; rel++)
2494 {
2495 unsigned long r_symndx;
2496 struct elf_link_hash_entry *h = NULL;
2497 bfd_signed_vma got_element_size = 4;
2498 bfd_signed_vma *specific_refcount = NULL;
2499 enum elf_cris_reloc_type r_type;
2500
2501 r_symndx = ELF32_R_SYM (rel->r_info);
2502 if (r_symndx >= symtab_hdr->sh_info)
2503 {
2504 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2505 while (h->root.type == bfd_link_hash_indirect
2506 || h->root.type == bfd_link_hash_warning)
2507 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2508 }
2509
2510 r_type = ELF32_R_TYPE (rel->r_info);
2511 switch (r_type)
2512 {
2513 case R_CRIS_32_GOT:
2514 case R_CRIS_16_GOT:
2515 case R_CRIS_16_GOTPLT:
2516 case R_CRIS_32_GOTPLT:
2517 specific_refcount = h != NULL
2518 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2519 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2520 break;
2521
2522 case R_CRIS_32_GD:
2523 case R_CRIS_32_GOT_GD:
2524 case R_CRIS_16_GOT_GD:
2525 got_element_size = 8;
2526 specific_refcount = h != NULL
2527 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2528 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2529 break;
2530
2531 case R_CRIS_32_IE:
2532 case R_CRIS_16_GOT_TPREL:
2533 case R_CRIS_32_GOT_TPREL:
2534 specific_refcount = h != NULL
2535 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2536 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2537 break;
2538
2539 default:
2540 break;
2541 }
2542
2543 switch (r_type)
2544 {
2545 case R_CRIS_32_IE:
2546 case R_CRIS_32_GD:
2547 case R_CRIS_16_GOT_TPREL:
2548 case R_CRIS_32_GOT_TPREL:
2549 case R_CRIS_32_GOT_GD:
2550 case R_CRIS_16_GOT_GD:
2551 case R_CRIS_16_GOT:
2552 case R_CRIS_32_GOT:
2553 if (h != NULL)
2554 {
2555 /* If the counters are 0 when we got here, we've
2556 miscounted somehow somewhere, an internal error. */
2557 BFD_ASSERT (h->got.refcount > 0);
2558 --h->got.refcount;
2559
2560 BFD_ASSERT (*specific_refcount > 0);
2561 --*specific_refcount;
2562 if (*specific_refcount == 0)
2563 {
2564 /* We don't need the .got entry any more. */
2565 sgot->size -= got_element_size;
2566 srelgot->size -= sizeof (Elf32_External_Rela);
2567 }
2568 break;
2569 }
2570
2571 local_got_reloc:
2572 if (local_got_refcounts != NULL)
2573 {
2574 /* If the counters are 0 when we got here, we've
2575 miscounted somehow somewhere, an internal error. */
2576 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2577 --local_got_refcounts[r_symndx];
2578
2579 BFD_ASSERT (*specific_refcount > 0);
2580 --*specific_refcount;
2581 if (*specific_refcount == 0)
2582 {
2583 /* We don't need the .got entry any more. */
2584 sgot->size -= got_element_size;
2585 if (bfd_link_pic (info))
2586 srelgot->size -= sizeof (Elf32_External_Rela);
2587 }
2588 }
2589 break;
2590
2591 case R_CRIS_16_GOTPLT:
2592 case R_CRIS_32_GOTPLT:
2593 /* For local symbols, treat these like GOT relocs. */
2594 if (h == NULL)
2595 goto local_got_reloc;
2596 else
2597 /* For global symbols, adjust the reloc-specific refcount. */
2598 elf_cris_hash_entry (h)->gotplt_refcount--;
2599 /* Fall through. */
2600
2601 case R_CRIS_32_PLT_GOTREL:
2602 /* FIXME: We don't garbage-collect away the .got section. */
2603 if (local_got_refcounts != NULL)
2604 local_got_refcounts[-1]--;
2605 /* Fall through. */
2606
2607 case R_CRIS_8:
2608 case R_CRIS_16:
2609 case R_CRIS_32:
2610 case R_CRIS_8_PCREL:
2611 case R_CRIS_16_PCREL:
2612 case R_CRIS_32_PCREL:
2613 case R_CRIS_32_PLT_PCREL:
2614 /* Negate the increment we did in cris_elf_check_relocs. */
2615 if (h != NULL)
2616 {
2617 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2618 && h->plt.refcount > 0)
2619 --h->plt.refcount;
2620 }
2621 break;
2622
2623 case R_CRIS_32_DTPREL:
2624 /* This'd be a .dtpreld entry in e.g. debug info. */
2625 if ((sec->flags & SEC_ALLOC) == 0)
2626 break;
2627 /* Fall through. */
2628 case R_CRIS_16_DTPREL:
2629 htab->dtpmod_refcount--;
2630 if (htab->dtpmod_refcount == 0)
2631 htab->next_gotplt_entry -= 8;
2632 BFD_ASSERT (local_got_refcounts != NULL);
2633 local_got_refcounts[-1]--;
2634 break;
2635
2636 default:
2637 break;
2638 }
2639 }
2640
2641 return TRUE;
2642 }
2643
2644 /* The elf_backend_plt_sym_val hook function. */
2645
2646 static bfd_vma
2647 cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt,
2648 const arelent *rel)
2649 {
2650 bfd_size_type plt_entry_size;
2651 bfd_size_type pltoffs;
2652 bfd *abfd = plt->owner;
2653
2654 /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */
2655 bfd_size_type plt_entry_got_offset = 2;
2656 bfd_size_type plt_sec_size;
2657 bfd_size_type got_vma_for_dyn;
2658 asection *got;
2659
2660 /* FIXME: the .got section should be readily available also when
2661 we're not linking. */
2662 if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL)
2663 return (bfd_vma) -1;
2664
2665 plt_sec_size = bfd_section_size (plt->owner, plt);
2666 plt_entry_size
2667 = (bfd_get_mach (abfd) == bfd_mach_cris_v32
2668 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2669
2670 /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */
2671 got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma;
2672
2673 /* Because we can have merged GOT entries; a single .got entry for
2674 both GOT and the PLT part of the GOT (.got.plt), the index of the
2675 reloc in .rela.plt is not the same as the index in the PLT.
2676 Instead, we have to hunt down the GOT offset in the PLT that
2677 corresponds to that of this reloc. Unfortunately, we will only
2678 be called for the .rela.plt relocs, so we'll miss synthetic
2679 symbols for .plt entries with merged GOT entries. (FIXME:
2680 fixable by providing our own bfd_elf32_get_synthetic_symtab.
2681 Doesn't seem worthwile at time of this writing.) FIXME: we've
2682 gone from O(1) to O(N) (N number of PLT entries) for finding each
2683 PLT address. Shouldn't matter in practice though. */
2684
2685 for (pltoffs = plt_entry_size;
2686 pltoffs < plt_sec_size;
2687 pltoffs += plt_entry_size)
2688 {
2689 bfd_size_type got_offset;
2690 bfd_byte gotoffs_raw[4];
2691
2692 if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw,
2693 pltoffs + plt_entry_got_offset,
2694 sizeof (gotoffs_raw)))
2695 return (bfd_vma) -1;
2696
2697 got_offset = bfd_get_32 (abfd, gotoffs_raw);
2698 if (got_offset + got_vma_for_dyn == rel->address)
2699 return plt->vma + pltoffs;
2700 }
2701
2702 /* While it's tempting to BFD_ASSERT that we shouldn't get here,
2703 that'd not be graceful behavior for invalid input. */
2704 return (bfd_vma) -1;
2705 }
2706
2707 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2708 entry but we found we will not create any. Called when we find we will
2709 not have any PLT for this symbol, by for example
2710 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2711 or elf_cris_size_dynamic_sections if no dynamic sections will be
2712 created (we're only linking static objects). */
2713
2714 static bfd_boolean
2715 elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2716 {
2717 struct bfd_link_info *info = (struct bfd_link_info *) p;
2718
2719 /* A GOTPLT reloc, when activated, is supposed to be included into
2720 the PLT refcount. */
2721 BFD_ASSERT (h->gotplt_refcount == 0
2722 || h->gotplt_refcount <= h->root.plt.refcount);
2723
2724 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2725 if (h->gotplt_refcount <= 0)
2726 return TRUE;
2727
2728 if (h->reg_got_refcount > 0)
2729 {
2730 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2731 Probably not necessary at this stage, but keeping them accurate
2732 helps avoiding surprises later. */
2733 h->root.got.refcount += h->gotplt_refcount;
2734 h->reg_got_refcount += h->gotplt_refcount;
2735 h->gotplt_refcount = 0;
2736 }
2737 else
2738 {
2739 /* No GOT entry for this symbol. We need to create one. */
2740 asection *sgot;
2741 asection *srelgot;
2742
2743 sgot = elf_hash_table (info)->sgot;
2744 srelgot = elf_hash_table (info)->srelgot;
2745
2746 /* Put accurate refcounts there. */
2747 h->root.got.refcount += h->gotplt_refcount;
2748 h->reg_got_refcount = h->gotplt_refcount;
2749
2750 h->gotplt_refcount = 0;
2751
2752 /* We always have a .got and a .rela.got section if there were
2753 GOTPLT relocs in input. */
2754 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2755
2756 /* Allocate space in the .got section. */
2757 sgot->size += 4;
2758
2759 /* Allocate relocation space. */
2760 srelgot->size += sizeof (Elf32_External_Rela);
2761 }
2762
2763 return TRUE;
2764 }
2765
2766 /* Try to fold PLT entries with GOT entries. There are two cases when we
2767 want to do this:
2768
2769 - When all PLT references are GOTPLT references, and there are GOT
2770 references, and this is not the executable. We don't have to
2771 generate a PLT at all.
2772
2773 - When there are both (ordinary) PLT references and GOT references,
2774 and this isn't the executable.
2775 We want to make the PLT reference use the ordinary GOT entry rather
2776 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2777 since the GOT entry will have to be resolved at startup anyway.
2778
2779 Though the latter case is handled when room for the PLT is allocated,
2780 not here.
2781
2782 By folding into the GOT, we may need a round-trip to a PLT in the
2783 executable for calls, a loss in performance. Still, losing a
2784 reloc is a win in size and at least in start-up time.
2785
2786 Note that this function is called before symbols are forced local by
2787 version scripts. The differing cases are handled by
2788 elf_cris_hide_symbol. */
2789
2790 static bfd_boolean
2791 elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2792 {
2793 struct bfd_link_info *info = (struct bfd_link_info *) p;
2794
2795 /* If there are no GOT references for this symbol, we can't fold any
2796 other reference so there's nothing to do. Likewise if there are no
2797 PLT references; GOTPLT references included. */
2798 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2799 return TRUE;
2800
2801 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2802 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2803
2804 if (h->gotplt_refcount == h->root.plt.refcount)
2805 {
2806 /* The only PLT references are GOTPLT references, and there are GOT
2807 references. Convert PLT to GOT references. */
2808 if (! elf_cris_adjust_gotplt_to_got (h, info))
2809 return FALSE;
2810
2811 /* Clear the PLT references, so no PLT will be created. */
2812 h->root.plt.offset = (bfd_vma) -1;
2813 }
2814
2815 return TRUE;
2816 }
2817
2818 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2819 to use a GOT entry (and create one) rather than requiring a GOTPLT
2820 entry. */
2821
2822 static void
2823 elf_cris_hide_symbol (struct bfd_link_info *info,
2824 struct elf_link_hash_entry *h,
2825 bfd_boolean force_local)
2826 {
2827 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2828
2829 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2830 }
2831
2832 /* Adjust a symbol defined by a dynamic object and referenced by a
2833 regular object. The current definition is in some section of the
2834 dynamic object, but we're not including those sections. We have to
2835 change the definition to something the rest of the link can
2836 understand. */
2837
2838 static bfd_boolean
2839 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2840 struct elf_link_hash_entry *h)
2841 {
2842 struct elf_cris_link_hash_table * htab;
2843 bfd *dynobj;
2844 asection *s;
2845 asection *srel;
2846 bfd_size_type plt_entry_size;
2847
2848 htab = elf_cris_hash_table (info);
2849 if (htab == NULL)
2850 return FALSE;
2851
2852 dynobj = htab->root.dynobj;
2853
2854 /* Make sure we know what is going on here. */
2855 BFD_ASSERT (dynobj != NULL
2856 && (h->needs_plt
2857 || h->u.weakdef != NULL
2858 || (h->def_dynamic
2859 && h->ref_regular
2860 && !h->def_regular)));
2861
2862 plt_entry_size
2863 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2864 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2865
2866 /* If this is a function, put it in the procedure linkage table. We
2867 will fill in the contents of the procedure linkage table later,
2868 when we know the address of the .got section. */
2869 if (h->type == STT_FUNC
2870 || h->needs_plt)
2871 {
2872 /* If we link a program (not a DSO), we'll get rid of unnecessary
2873 PLT entries; we point to the actual symbols -- even for pic
2874 relocs, because a program built with -fpic should have the same
2875 result as one built without -fpic, specifically considering weak
2876 symbols.
2877 FIXME: m68k and i386 differ here, for unclear reasons. */
2878 if (! bfd_link_pic (info)
2879 && !h->def_dynamic)
2880 {
2881 /* This case can occur if we saw a PLT reloc in an input file,
2882 but the symbol was not defined by a dynamic object. In such
2883 a case, we don't actually need to build a procedure linkage
2884 table, and we can just do an absolute or PC reloc instead, or
2885 change a .got.plt index to a .got index for GOTPLT relocs. */
2886 BFD_ASSERT (h->needs_plt);
2887 h->needs_plt = 0;
2888 h->plt.offset = (bfd_vma) -1;
2889 return
2890 elf_cris_adjust_gotplt_to_got ((struct
2891 elf_cris_link_hash_entry *) h,
2892 info);
2893 }
2894
2895 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2896 where a pointer-equivalent symbol was unimportant (i.e. more
2897 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2898 of the PLT. We can't for the executable, because the GOT
2899 entries will point to the PLT there (and be constant). */
2900 if (bfd_link_pic (info)
2901 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2902 h, info))
2903 return FALSE;
2904
2905 /* GC or folding may have rendered this entry unused. */
2906 if (h->plt.refcount <= 0)
2907 {
2908 h->needs_plt = 0;
2909 h->plt.offset = (bfd_vma) -1;
2910 return TRUE;
2911 }
2912
2913 /* Make sure this symbol is output as a dynamic symbol. */
2914 if (h->dynindx == -1)
2915 {
2916 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2917 return FALSE;
2918 }
2919
2920 s = htab->root.splt;
2921 BFD_ASSERT (s != NULL);
2922
2923 /* If this is the first .plt entry, make room for the special
2924 first entry. */
2925 if (s->size == 0)
2926 s->size += plt_entry_size;
2927
2928 /* If this symbol is not defined in a regular file, and we are
2929 not generating a shared library, then set the symbol to this
2930 location in the .plt. */
2931 if (!bfd_link_pic (info)
2932 && !h->def_regular)
2933 {
2934 h->root.u.def.section = s;
2935 h->root.u.def.value = s->size;
2936 }
2937
2938 /* If there's already a GOT entry, use that, not a .got.plt. A
2939 GOT field still has a reference count when we get here; it's
2940 not yet changed to an offset. We can't do this for an
2941 executable, because then the reloc associated with the PLT
2942 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2943 this to elf_cris_try_fold_plt_to_got. */
2944 if (bfd_link_pic (info) && h->got.refcount > 0)
2945 {
2946 h->got.refcount += h->plt.refcount;
2947
2948 /* Mark the PLT offset to use the GOT entry by setting the low
2949 bit in the plt offset; it is always a multiple of
2950 plt_entry_size (which is at least a multiple of 2). */
2951 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2952
2953 /* Change the PLT refcount to an offset. */
2954 h->plt.offset = s->size;
2955
2956 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2957 that the got entry should be used instead. */
2958 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2959 h)->gotplt_offset == 0);
2960
2961 /* Make room for this entry. */
2962 s->size += plt_entry_size;
2963
2964 return TRUE;
2965 }
2966
2967 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2968 h->plt.offset = s->size;
2969
2970 /* Make room for this entry. */
2971 s->size += plt_entry_size;
2972
2973 /* We also need to make an entry in the .got.plt section, which
2974 will be placed in the .got section by the linker script. */
2975 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2976 = htab->next_gotplt_entry;
2977 htab->next_gotplt_entry += 4;
2978
2979 s = htab->root.sgotplt;
2980 BFD_ASSERT (s != NULL);
2981 s->size += 4;
2982
2983 /* We also need to make an entry in the .rela.plt section. */
2984
2985 s = htab->root.srelplt;
2986 BFD_ASSERT (s != NULL);
2987 s->size += sizeof (Elf32_External_Rela);
2988
2989 return TRUE;
2990 }
2991
2992 /* Reinitialize the plt offset now that it is not used as a reference
2993 count any more. */
2994 h->plt.offset = (bfd_vma) -1;
2995
2996 /* If this is a weak symbol, and there is a real definition, the
2997 processor independent code will have arranged for us to see the
2998 real definition first, and we can just use the same value. */
2999 if (h->u.weakdef != NULL)
3000 {
3001 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3002 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3003 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3004 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3005 return TRUE;
3006 }
3007
3008 /* This is a reference to a symbol defined by a dynamic object which
3009 is not a function. */
3010
3011 /* If we are creating a shared library, we must presume that the
3012 only references to the symbol are via the global offset table.
3013 For such cases we need not do anything here; the relocations will
3014 be handled correctly by relocate_section. */
3015 if (bfd_link_pic (info))
3016 return TRUE;
3017
3018 /* If there are no references to this symbol that do not use the
3019 GOT, we don't need to generate a copy reloc. */
3020 if (!h->non_got_ref)
3021 return TRUE;
3022
3023 /* We must allocate the symbol in our .dynbss section, which will
3024 become part of the .bss section of the executable. There will be
3025 an entry for this symbol in the .dynsym section. The dynamic
3026 object will contain position independent code, so all references
3027 from the dynamic object to this symbol will go through the global
3028 offset table. The dynamic linker will use the .dynsym entry to
3029 determine the address it must put in the global offset table, so
3030 both the dynamic object and the regular object will refer to the
3031 same memory location for the variable. */
3032
3033 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3034 copy the initial value out of the dynamic object and into the
3035 runtime process image. We need to remember the offset into the
3036 .rela.bss section we are going to use. */
3037
3038 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
3039 {
3040 s = htab->root.sdynrelro;
3041 srel = htab->root.sreldynrelro;
3042 }
3043 else
3044 {
3045 s = htab->root.sdynbss;
3046 srel = htab->root.srelbss;
3047 }
3048 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3049 {
3050 BFD_ASSERT (srel != NULL);
3051 srel->size += sizeof (Elf32_External_Rela);
3052 h->needs_copy = 1;
3053 }
3054
3055 BFD_ASSERT (s != NULL);
3056
3057 return _bfd_elf_adjust_dynamic_copy (info, h, s);
3058 }
3059
3060 /* Adjust our "subclass" elements for an indirect symbol. */
3061
3062 static void
3063 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3064 struct elf_link_hash_entry *dir,
3065 struct elf_link_hash_entry *ind)
3066 {
3067 struct elf_cris_link_hash_entry *edir, *eind;
3068
3069 edir = (struct elf_cris_link_hash_entry *) dir;
3070 eind = (struct elf_cris_link_hash_entry *) ind;
3071
3072 /* Only indirect symbols are replaced; we're not interested in
3073 updating any of EIND's fields for other symbols. */
3074 if (eind->root.root.type != bfd_link_hash_indirect)
3075 {
3076 /* Still, we need to copy flags for e.g. weak definitions. */
3077 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3078 return;
3079 }
3080
3081 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3082
3083 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3084 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3085 if (eind->pcrel_relocs_copied != NULL)
3086 {
3087 if (edir->pcrel_relocs_copied != NULL)
3088 {
3089 struct elf_cris_pcrel_relocs_copied **pp;
3090 struct elf_cris_pcrel_relocs_copied *p;
3091
3092 /* Add reloc counts against the indirect sym to the direct sym
3093 list. Merge any entries against the same section. */
3094 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3095 {
3096 struct elf_cris_pcrel_relocs_copied *q;
3097 p = *pp;
3098 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3099 if (q->section == p->section)
3100 {
3101 q->count += p->count;
3102 *pp = p->next;
3103 break;
3104 }
3105 if (q == NULL)
3106 pp = &p->next;
3107 }
3108 *pp = edir->pcrel_relocs_copied;
3109 }
3110 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3111 }
3112 XMOVE (gotplt_refcount);
3113 XMOVE (gotplt_offset);
3114 XMOVE (reg_got_refcount);
3115 XMOVE (tprel_refcount);
3116 XMOVE (dtp_refcount);
3117 #undef XMOVE
3118 #undef XMOVOPZ
3119
3120 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3121 }
3122
3123 /* Look through the relocs for a section during the first phase. */
3124
3125 static bfd_boolean
3126 cris_elf_check_relocs (bfd *abfd,
3127 struct bfd_link_info *info,
3128 asection *sec,
3129 const Elf_Internal_Rela *relocs)
3130 {
3131 struct elf_cris_link_hash_table * htab;
3132 bfd *dynobj;
3133 Elf_Internal_Shdr *symtab_hdr;
3134 struct elf_link_hash_entry **sym_hashes;
3135 bfd_signed_vma *local_got_refcounts;
3136 const Elf_Internal_Rela *rel;
3137 const Elf_Internal_Rela *rel_end;
3138 asection *sgot;
3139 asection *srelgot;
3140 asection *sreloc;
3141
3142 if (bfd_link_relocatable (info))
3143 return TRUE;
3144
3145 htab = elf_cris_hash_table (info);
3146 if (htab == NULL)
3147 return FALSE;
3148
3149 dynobj = elf_hash_table (info)->dynobj;
3150 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3151 sym_hashes = elf_sym_hashes (abfd);
3152 local_got_refcounts = elf_local_got_refcounts (abfd);
3153
3154 sgot = NULL;
3155 srelgot = NULL;
3156 sreloc = NULL;
3157
3158 rel_end = relocs + sec->reloc_count;
3159 for (rel = relocs; rel < rel_end; rel++)
3160 {
3161 struct elf_link_hash_entry *h;
3162 unsigned long r_symndx;
3163 enum elf_cris_reloc_type r_type;
3164 bfd_signed_vma got_element_size = 4;
3165 unsigned long r_symndx_lgot = INT_MAX;
3166
3167 r_symndx = ELF32_R_SYM (rel->r_info);
3168 if (r_symndx < symtab_hdr->sh_info)
3169 {
3170 h = NULL;
3171 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3172 }
3173 else
3174 {
3175 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3176 while (h->root.type == bfd_link_hash_indirect
3177 || h->root.type == bfd_link_hash_warning)
3178 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3179
3180 /* PR15323, ref flags aren't set for references in the same
3181 object. */
3182 h->root.non_ir_ref = 1;
3183 }
3184
3185 r_type = ELF32_R_TYPE (rel->r_info);
3186
3187 /* Some relocs require linker-created sections; we need to hang them
3188 on the first input bfd we found that contained dynamic relocs. */
3189 switch (r_type)
3190 {
3191 case R_CRIS_32_DTPREL:
3192 if ((sec->flags & SEC_ALLOC) == 0)
3193 /* This'd be a .dtpreld entry in e.g. debug info. We have
3194 several different switch statements below, but none of
3195 that is needed; we need no preparations for resolving
3196 R_CRIS_32_DTPREL into a non-allocated section (debug
3197 info), so let's just move on to the next
3198 relocation. */
3199 continue;
3200 /* Fall through. */
3201 case R_CRIS_16_DTPREL:
3202 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3203 entry at index 3. */
3204 if (htab->dtpmod_refcount == 0)
3205 htab->next_gotplt_entry += 8;
3206
3207 htab->dtpmod_refcount++;
3208 /* Fall through. */
3209
3210 case R_CRIS_32_IE:
3211 case R_CRIS_32_GD:
3212 case R_CRIS_16_GOT_GD:
3213 case R_CRIS_32_GOT_GD:
3214 case R_CRIS_32_GOT_TPREL:
3215 case R_CRIS_16_GOT_TPREL:
3216 case R_CRIS_16_GOT:
3217 case R_CRIS_32_GOT:
3218 case R_CRIS_32_GOTREL:
3219 case R_CRIS_32_PLT_GOTREL:
3220 case R_CRIS_32_PLT_PCREL:
3221 case R_CRIS_16_GOTPLT:
3222 case R_CRIS_32_GOTPLT:
3223 if (dynobj == NULL)
3224 {
3225 elf_hash_table (info)->dynobj = dynobj = abfd;
3226
3227 /* We could handle this if we can get a handle on the
3228 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3229 that, we must insist on dynobj being a specific mach. */
3230 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3231 {
3232 _bfd_error_handler
3233 /* xgettext:c-format */
3234 (_("%B, section %A:\n v10/v32 compatible object %s"
3235 " must not contain a PIC relocation"),
3236 abfd, sec);
3237 return FALSE;
3238 }
3239 }
3240
3241 if (sgot == NULL)
3242 {
3243 /* We may have a dynobj but no .got section, if machine-
3244 independent parts of the linker found a reason to create
3245 a dynobj. We want to create the .got section now, so we
3246 can assume it's always present whenever there's a dynobj.
3247 It's ok to call this function more than once. */
3248 if (!_bfd_elf_create_got_section (dynobj, info))
3249 return FALSE;
3250
3251 sgot = elf_hash_table (info)->sgot;
3252 srelgot = elf_hash_table (info)->srelgot;
3253 }
3254
3255 if (local_got_refcounts == NULL)
3256 {
3257 bfd_size_type amt;
3258
3259 /* We use index local_got_refcounts[-1] to count all
3260 GOT-relative relocations that do not have explicit
3261 GOT entries. */
3262 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3263 amt *= sizeof (bfd_signed_vma);
3264 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3265 if (local_got_refcounts == NULL)
3266 return FALSE;
3267
3268 local_got_refcounts++;
3269 elf_local_got_refcounts (abfd) = local_got_refcounts;
3270 }
3271 break;
3272
3273 default:
3274 break;
3275 }
3276
3277 /* Warn and error for invalid input. */
3278 switch (r_type)
3279 {
3280 case R_CRIS_32_IE:
3281 case R_CRIS_32_TPREL:
3282 case R_CRIS_16_TPREL:
3283 case R_CRIS_32_GD:
3284 if (bfd_link_pic (info))
3285 {
3286 _bfd_error_handler
3287 /* xgettext:c-format */
3288 (_("%B, section %A:\n relocation %s not valid"
3289 " in a shared object;"
3290 " typically an option mixup, recompile with -fPIC"),
3291 abfd,
3292 sec,
3293 cris_elf_howto_table[r_type].name);
3294 /* Don't return FALSE here; we want messages for all of
3295 these and the error behavior is ungraceful
3296 anyway. */
3297 }
3298 default:
3299 break;
3300 }
3301
3302 switch (r_type)
3303 {
3304 case R_CRIS_32_GD:
3305 case R_CRIS_16_GOT_GD:
3306 case R_CRIS_32_GOT_GD:
3307 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3308 got_element_size = 8;
3309 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3310 break;
3311
3312 case R_CRIS_16_DTPREL:
3313 case R_CRIS_32_DTPREL:
3314 /* These two just request for the constant-index
3315 module-local tls_index-sized GOT entry, which we add
3316 elsewhere. */
3317 break;
3318
3319 case R_CRIS_32_IE:
3320 case R_CRIS_32_GOT_TPREL:
3321 case R_CRIS_16_GOT_TPREL:
3322 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3323
3324 /* Those relocs also require that a DSO is of type
3325 Initial Exec. Like other targets, we don't reset this
3326 flag even if the relocs are GC:ed away. */
3327 if (bfd_link_pic (info))
3328 info->flags |= DF_STATIC_TLS;
3329 break;
3330
3331 /* Let's list the other assembler-generated TLS-relocs too,
3332 just to show that they're not forgotten. */
3333 case R_CRIS_16_TPREL:
3334 case R_CRIS_32_TPREL:
3335 default:
3336 break;
3337 }
3338
3339 switch (r_type)
3340 {
3341 case R_CRIS_16_GOTPLT:
3342 case R_CRIS_32_GOTPLT:
3343 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3344 entry) is eliminated. We can only do this for a non-local
3345 symbol. */
3346 if (h != NULL)
3347 {
3348 elf_cris_hash_entry (h)->gotplt_refcount++;
3349 goto handle_gotplt_reloc;
3350 }
3351 /* If h is NULL then this is a local symbol, and we must make a
3352 GOT entry for it, so handle it like a GOT reloc. */
3353 /* Fall through. */
3354
3355 case R_CRIS_32_IE:
3356 case R_CRIS_32_GD:
3357 case R_CRIS_16_GOT_GD:
3358 case R_CRIS_32_GOT_GD:
3359 case R_CRIS_32_GOT_TPREL:
3360 case R_CRIS_16_GOT_TPREL:
3361 case R_CRIS_16_GOT:
3362 case R_CRIS_32_GOT:
3363 /* This symbol requires a global offset table entry. */
3364 if (h != NULL)
3365 {
3366 if (h->got.refcount == 0)
3367 {
3368 /* Make sure this symbol is output as a dynamic symbol. */
3369 if (h->dynindx == -1)
3370 {
3371 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3372 return FALSE;
3373 }
3374 }
3375
3376 /* Update the sum of reloc counts for this symbol. */
3377 h->got.refcount++;
3378
3379 switch (r_type)
3380 {
3381 case R_CRIS_16_GOT:
3382 case R_CRIS_32_GOT:
3383 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3384 {
3385 /* Allocate space in the .got section. */
3386 sgot->size += got_element_size;
3387 /* Allocate relocation space. */
3388 srelgot->size += sizeof (Elf32_External_Rela);
3389 }
3390 elf_cris_hash_entry (h)->reg_got_refcount++;
3391 break;
3392
3393 case R_CRIS_32_GD:
3394 case R_CRIS_16_GOT_GD:
3395 case R_CRIS_32_GOT_GD:
3396 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3397 {
3398 /* Allocate space in the .got section. */
3399 sgot->size += got_element_size;
3400 /* Allocate relocation space. */
3401 srelgot->size += sizeof (Elf32_External_Rela);
3402 }
3403 elf_cris_hash_entry (h)->dtp_refcount++;
3404 break;
3405
3406 case R_CRIS_32_IE:
3407 case R_CRIS_32_GOT_TPREL:
3408 case R_CRIS_16_GOT_TPREL:
3409 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3410 {
3411 /* Allocate space in the .got section. */
3412 sgot->size += got_element_size;
3413 /* Allocate relocation space. */
3414 srelgot->size += sizeof (Elf32_External_Rela);
3415 }
3416 elf_cris_hash_entry (h)->tprel_refcount++;
3417 break;
3418
3419 default:
3420 BFD_FAIL ();
3421 break;
3422 }
3423 }
3424 else
3425 {
3426 /* This is a global offset table entry for a local symbol. */
3427 if (local_got_refcounts[r_symndx_lgot] == 0)
3428 {
3429 sgot->size += got_element_size;
3430 if (bfd_link_pic (info))
3431 {
3432 /* If we are generating a shared object, we need
3433 to output a R_CRIS_RELATIVE reloc so that the
3434 dynamic linker can adjust this GOT entry.
3435 Similarly for non-regular got entries. */
3436 srelgot->size += sizeof (Elf32_External_Rela);
3437 }
3438 }
3439 /* Update the reloc-specific count. */
3440 local_got_refcounts[r_symndx_lgot]++;
3441
3442 /* This one is the sum of all the others. */
3443 local_got_refcounts[r_symndx]++;
3444 }
3445 break;
3446
3447 case R_CRIS_16_DTPREL:
3448 case R_CRIS_32_DTPREL:
3449 case R_CRIS_32_GOTREL:
3450 /* This reference requires a global offset table.
3451 FIXME: The actual refcount isn't used currently; the .got
3452 section can't be removed if there were any references in the
3453 input. */
3454 local_got_refcounts[-1]++;
3455 break;
3456
3457 handle_gotplt_reloc:
3458
3459 case R_CRIS_32_PLT_GOTREL:
3460 /* This reference requires a global offset table. */
3461 local_got_refcounts[-1]++;
3462 /* Fall through. */
3463
3464 case R_CRIS_32_PLT_PCREL:
3465 /* This symbol requires a procedure linkage table entry. We
3466 actually build the entry in adjust_dynamic_symbol,
3467 because this might be a case of linking PIC code which is
3468 never referenced by a dynamic object, in which case we
3469 don't need to generate a procedure linkage table entry
3470 after all. */
3471
3472 /* Beware: if we'd check for visibility of the symbol here
3473 (and not marking the need for a PLT when non-visible), we'd
3474 get into trouble with keeping handling consistent with
3475 regards to relocs found before definition and GOTPLT
3476 handling. Eliminable PLT entries will be dealt with later
3477 anyway. */
3478 if (h == NULL)
3479 continue;
3480
3481 h->needs_plt = 1;
3482 h->plt.refcount++;
3483 break;
3484
3485 case R_CRIS_8:
3486 case R_CRIS_16:
3487 case R_CRIS_32:
3488 /* Let's help debug shared library creation. Any of these
3489 relocs *can* be used in shared libs, but pages containing
3490 them cannot be shared, so they're not appropriate for
3491 common use. Don't warn for sections we don't care about,
3492 such as debug sections or non-constant sections. We
3493 can't help tables of (global) function pointers, for
3494 example, though they must be emitted in a (writable) data
3495 section to avoid having impure text sections. */
3496 if (bfd_link_pic (info)
3497 && (sec->flags & SEC_ALLOC) != 0
3498 && (sec->flags & SEC_READONLY) != 0)
3499 {
3500 /* FIXME: How do we make this optionally a warning only? */
3501 _bfd_error_handler
3502 /* xgettext:c-format */
3503 (_("%B, section %A:\n relocation %s should not"
3504 " be used in a shared object; recompile with -fPIC"),
3505 abfd,
3506 sec,
3507 cris_elf_howto_table[r_type].name);
3508 }
3509
3510 /* We don't need to handle relocs into sections not going into
3511 the "real" output. */
3512 if ((sec->flags & SEC_ALLOC) == 0)
3513 break;
3514
3515 if (h != NULL)
3516 {
3517 h->non_got_ref = 1;
3518
3519 /* Make sure a plt entry is created for this symbol if it
3520 turns out to be a function defined by a dynamic object. */
3521 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3522 h->plt.refcount++;
3523 }
3524
3525 /* If we are creating a shared library and this is not a local
3526 symbol, we need to copy the reloc into the shared library.
3527 However when linking with -Bsymbolic and this is a global
3528 symbol which is defined in an object we are including in the
3529 link (i.e., DEF_REGULAR is set), then we can resolve the
3530 reloc directly. At this point we have not seen all the input
3531 files, so it is possible that DEF_REGULAR is not set now but
3532 will be set later (it is never cleared). In case of a weak
3533 definition, DEF_REGULAR may be cleared later by a strong
3534 definition in a shared library. We account for that
3535 possibility below by storing information in the relocs_copied
3536 field of the hash table entry. A similar situation occurs
3537 when creating shared libraries and symbol visibility changes
3538 render the symbol local. */
3539
3540 /* No need to do anything if we're not creating a shared object. */
3541 if (! bfd_link_pic (info))
3542 break;
3543
3544 /* We may need to create a reloc section in the dynobj and made room
3545 for this reloc. */
3546 if (sreloc == NULL)
3547 {
3548 sreloc = _bfd_elf_make_dynamic_reloc_section
3549 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3550
3551 if (sreloc == NULL)
3552 return FALSE;
3553 }
3554
3555 if (sec->flags & SEC_READONLY)
3556 info->flags |= DF_TEXTREL;
3557
3558 sreloc->size += sizeof (Elf32_External_Rela);
3559 break;
3560
3561 case R_CRIS_8_PCREL:
3562 case R_CRIS_16_PCREL:
3563 case R_CRIS_32_PCREL:
3564 if (h != NULL)
3565 {
3566 h->non_got_ref = 1;
3567
3568 /* Make sure a plt entry is created for this symbol if it
3569 turns out to be a function defined by a dynamic object. */
3570 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3571 h->plt.refcount++;
3572 }
3573
3574 /* If we are creating a shared library and this is not a local
3575 symbol, we need to copy the reloc into the shared library.
3576 However when linking with -Bsymbolic and this is a global
3577 symbol which is defined in an object we are including in the
3578 link (i.e., DEF_REGULAR is set), then we can resolve the
3579 reloc directly. At this point we have not seen all the input
3580 files, so it is possible that DEF_REGULAR is not set now but
3581 will be set later (it is never cleared). In case of a weak
3582 definition, DEF_REGULAR may be cleared later by a strong
3583 definition in a shared library. We account for that
3584 possibility below by storing information in the relocs_copied
3585 field of the hash table entry. A similar situation occurs
3586 when creating shared libraries and symbol visibility changes
3587 render the symbol local. */
3588
3589 /* No need to do anything if we're not creating a shared object. */
3590 if (! bfd_link_pic (info))
3591 break;
3592
3593 /* We don't need to handle relocs into sections not going into
3594 the "real" output. */
3595 if ((sec->flags & SEC_ALLOC) == 0)
3596 break;
3597
3598 /* If the symbol is local, then we know already we can
3599 eliminate the reloc. */
3600 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3601 break;
3602
3603 /* If this is with -Bsymbolic and the symbol isn't weak, and
3604 is defined by an ordinary object (the ones we include in
3605 this shared library) then we can also eliminate the
3606 reloc. See comment above for more eliminable cases which
3607 we can't identify at this time. */
3608 if (SYMBOLIC_BIND (info, h)
3609 && h->root.type != bfd_link_hash_defweak
3610 && h->def_regular)
3611 break;
3612
3613 /* We may need to create a reloc section in the dynobj and made room
3614 for this reloc. */
3615 if (sreloc == NULL)
3616 {
3617 sreloc = _bfd_elf_make_dynamic_reloc_section
3618 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3619
3620 if (sreloc == NULL)
3621 return FALSE;
3622 }
3623
3624 sreloc->size += sizeof (Elf32_External_Rela);
3625
3626 /* We count the number of PC relative relocations we have
3627 entered for this symbol, so that we can discard them
3628 again if the symbol is later defined by a regular object.
3629 We know that h is really a pointer to an
3630 elf_cris_link_hash_entry. */
3631 {
3632 struct elf_cris_link_hash_entry *eh;
3633 struct elf_cris_pcrel_relocs_copied *p;
3634
3635 eh = elf_cris_hash_entry (h);
3636
3637 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3638 if (p->section == sec)
3639 break;
3640
3641 if (p == NULL)
3642 {
3643 p = ((struct elf_cris_pcrel_relocs_copied *)
3644 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3645 if (p == NULL)
3646 return FALSE;
3647 p->next = eh->pcrel_relocs_copied;
3648 eh->pcrel_relocs_copied = p;
3649 p->section = sec;
3650 p->count = 0;
3651 p->r_type = r_type;
3652 }
3653
3654 ++p->count;
3655 }
3656 break;
3657
3658 /* This relocation describes the C++ object vtable hierarchy.
3659 Reconstruct it for later use during GC. */
3660 case R_CRIS_GNU_VTINHERIT:
3661 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3662 return FALSE;
3663 break;
3664
3665 /* This relocation describes which C++ vtable entries are actually
3666 used. Record for later use during GC. */
3667 case R_CRIS_GNU_VTENTRY:
3668 BFD_ASSERT (h != NULL);
3669 if (h != NULL
3670 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3671 return FALSE;
3672 break;
3673
3674 case R_CRIS_16_TPREL:
3675 case R_CRIS_32_TPREL:
3676 /* Already warned above, when necessary. */
3677 break;
3678
3679 default:
3680 /* Other relocs do not appear here. */
3681 bfd_set_error (bfd_error_bad_value);
3682 return FALSE;
3683 }
3684 }
3685
3686 return TRUE;
3687 }
3688
3689 /* Set the sizes of the dynamic sections. */
3690
3691 static bfd_boolean
3692 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3693 struct bfd_link_info *info)
3694 {
3695 struct elf_cris_link_hash_table * htab;
3696 bfd *dynobj;
3697 asection *s;
3698 bfd_boolean plt;
3699 bfd_boolean relocs;
3700
3701 htab = elf_cris_hash_table (info);
3702 if (htab == NULL)
3703 return FALSE;
3704
3705 dynobj = htab->root.dynobj;
3706 BFD_ASSERT (dynobj != NULL);
3707
3708 if (htab->root.dynamic_sections_created)
3709 {
3710 /* Set the contents of the .interp section to the interpreter. */
3711 if (bfd_link_executable (info) && !info->nointerp)
3712 {
3713 s = bfd_get_linker_section (dynobj, ".interp");
3714 BFD_ASSERT (s != NULL);
3715 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3716 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3717 }
3718 }
3719 else
3720 {
3721 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3722 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3723 info);
3724
3725 /* We may have created entries in the .rela.got section.
3726 However, if we are not creating the dynamic sections, we will
3727 not actually use these entries. Reset the size of .rela.got,
3728 which will cause it to get stripped from the output file
3729 below. */
3730 s = htab->root.srelgot;
3731 if (s != NULL)
3732 s->size = 0;
3733 }
3734
3735 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3736 relative relocs against symbols defined in a regular object. We
3737 allocated space for them in the check_relocs routine, but we will not
3738 fill them in in the relocate_section routine. We also discard space
3739 for relocs that have become for local symbols due to symbol
3740 visibility changes. For programs, we discard space for relocs for
3741 symbols not referenced by any dynamic object. */
3742 if (bfd_link_pic (info))
3743 elf_cris_link_hash_traverse (htab,
3744 elf_cris_discard_excess_dso_dynamics,
3745 info);
3746 else
3747 elf_cris_link_hash_traverse (htab,
3748 elf_cris_discard_excess_program_dynamics,
3749 info);
3750
3751 /* The check_relocs and adjust_dynamic_symbol entry points have
3752 determined the sizes of the various dynamic sections. Allocate
3753 memory for them. */
3754 plt = FALSE;
3755 relocs = FALSE;
3756 for (s = dynobj->sections; s != NULL; s = s->next)
3757 {
3758 const char *name;
3759
3760 if ((s->flags & SEC_LINKER_CREATED) == 0)
3761 continue;
3762
3763 /* It's OK to base decisions on the section name, because none
3764 of the dynobj section names depend upon the input files. */
3765 name = bfd_get_section_name (dynobj, s);
3766
3767 if (strcmp (name, ".plt") == 0)
3768 {
3769 /* Remember whether there is a PLT. */
3770 plt = s->size != 0;
3771 }
3772 else if (strcmp (name, ".got.plt") == 0)
3773 {
3774 /* The .got.plt contains the .got header as well as the
3775 actual .got.plt contents. The .got header may contain a
3776 R_CRIS_DTPMOD entry at index 3. */
3777 s->size += htab->dtpmod_refcount != 0
3778 ? 8 : 0;
3779 }
3780 else if (CONST_STRNEQ (name, ".rela"))
3781 {
3782 if (strcmp (name, ".rela.got") == 0
3783 && htab->dtpmod_refcount != 0
3784 && bfd_link_pic (info))
3785 s->size += sizeof (Elf32_External_Rela);
3786
3787 if (s->size != 0)
3788 {
3789 /* Remember whether there are any reloc sections other
3790 than .rela.plt. */
3791 if (strcmp (name, ".rela.plt") != 0)
3792 relocs = TRUE;
3793
3794 /* We use the reloc_count field as a counter if we need
3795 to copy relocs into the output file. */
3796 s->reloc_count = 0;
3797 }
3798 }
3799 else if (! CONST_STRNEQ (name, ".got")
3800 && strcmp (name, ".dynbss") != 0
3801 && s != htab->root.sdynrelro)
3802 {
3803 /* It's not one of our sections, so don't allocate space. */
3804 continue;
3805 }
3806
3807 if (s->size == 0)
3808 {
3809 /* If we don't need this section, strip it from the
3810 output file. This is mostly to handle .rela.bss and
3811 .rela.plt. We must create both sections in
3812 create_dynamic_sections, because they must be created
3813 before the linker maps input sections to output
3814 sections. The linker does that before
3815 adjust_dynamic_symbol is called, and it is that
3816 function which decides whether anything needs to go
3817 into these sections. */
3818 s->flags |= SEC_EXCLUDE;
3819 continue;
3820 }
3821
3822 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3823 continue;
3824
3825 /* Allocate memory for the section contents. We use bfd_zalloc here
3826 in case unused entries are not reclaimed before the section's
3827 contents are written out. This should not happen, but this way
3828 if it does, we will not write out garbage. For reloc sections,
3829 this will make entries have the type R_CRIS_NONE. */
3830 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3831 if (s->contents == NULL)
3832 return FALSE;
3833 }
3834
3835 if (elf_hash_table (info)->dynamic_sections_created)
3836 {
3837 /* Add some entries to the .dynamic section. We fill in the
3838 values later, in elf_cris_finish_dynamic_sections, but we
3839 must add the entries now so that we get the correct size for
3840 the .dynamic section. The DT_DEBUG entry is filled in by the
3841 dynamic linker and used by the debugger. */
3842 #define add_dynamic_entry(TAG, VAL) \
3843 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3844
3845 if (!bfd_link_pic (info))
3846 {
3847 if (!add_dynamic_entry (DT_DEBUG, 0))
3848 return FALSE;
3849 }
3850
3851 if (plt)
3852 {
3853 if (!add_dynamic_entry (DT_PLTGOT, 0)
3854 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3855 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3856 || !add_dynamic_entry (DT_JMPREL, 0))
3857 return FALSE;
3858 }
3859
3860 if (relocs)
3861 {
3862 if (!add_dynamic_entry (DT_RELA, 0)
3863 || !add_dynamic_entry (DT_RELASZ, 0)
3864 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3865 return FALSE;
3866 }
3867
3868 if ((info->flags & DF_TEXTREL) != 0)
3869 {
3870 if (!add_dynamic_entry (DT_TEXTREL, 0))
3871 return FALSE;
3872 info->flags |= DF_TEXTREL;
3873 }
3874 }
3875 #undef add_dynamic_entry
3876
3877 return TRUE;
3878 }
3879
3880 /* This function is called via elf_cris_link_hash_traverse if we are
3881 creating a shared object. In the -Bsymbolic case, it discards the
3882 space allocated to copy PC relative relocs against symbols which
3883 are defined in regular objects. For the normal non-symbolic case,
3884 we also discard space for relocs that have become local due to
3885 symbol visibility changes. We allocated space for them in the
3886 check_relocs routine, but we won't fill them in in the
3887 relocate_section routine. */
3888
3889 static bfd_boolean
3890 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3891 void * inf)
3892 {
3893 struct elf_cris_pcrel_relocs_copied *s;
3894 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3895
3896 /* If a symbol has been forced local or we have found a regular
3897 definition for the symbolic link case, then we won't be needing
3898 any relocs. */
3899 if (h->root.def_regular
3900 && (h->root.forced_local
3901 || SYMBOLIC_BIND (info, &h->root)))
3902 {
3903 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3904 {
3905 asection *sreloc
3906 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3907 ->dynobj,
3908 s->section,
3909 /*rela?*/ TRUE);
3910 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3911 }
3912 return TRUE;
3913 }
3914
3915 /* If we have accounted for PC-relative relocs for read-only
3916 sections, now is the time to warn for them. We can't do it in
3917 cris_elf_check_relocs, because we don't know the status of all
3918 symbols at that time (and it's common to force symbols local
3919 late). */
3920
3921 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3922 if ((s->section->flags & SEC_READONLY) != 0)
3923 {
3924 /* FIXME: How do we make this optionally a warning only? */
3925 _bfd_error_handler
3926 /* xgettext:c-format */
3927 (_("%B, section `%A', to symbol `%s':\n"
3928 " relocation %s should not be used"
3929 " in a shared object; recompile with -fPIC"),
3930 s->section->owner,
3931 s->section,
3932 h->root.root.root.string,
3933 cris_elf_howto_table[s->r_type].name);
3934
3935 info->flags |= DF_TEXTREL;
3936 }
3937
3938 return TRUE;
3939 }
3940
3941 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3942 creating a shared object. We discard space for relocs for symbols put
3943 in the .got, but which we found we do not have to resolve at run-time. */
3944
3945 static bfd_boolean
3946 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
3947 void * inf)
3948 {
3949 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3950
3951 /* If we're not creating a shared library and have a symbol which is
3952 referred to by .got references, but the symbol is defined locally,
3953 (or rather, not defined by a DSO) then lose the reloc for the .got
3954 (don't allocate room for it). Likewise for relocs for something
3955 for which we create a PLT. */
3956 if (!h->root.def_dynamic
3957 || h->root.plt.refcount > 0)
3958 {
3959 if (h->reg_got_refcount > 0
3960 /* The size of this section is only valid and in sync with the
3961 various reference counts if we do dynamic; don't decrement it
3962 otherwise. */
3963 && elf_hash_table (info)->dynamic_sections_created)
3964 {
3965 bfd *dynobj = elf_hash_table (info)->dynobj;
3966 asection *srelgot = elf_hash_table (info)->srelgot;
3967
3968 BFD_ASSERT (dynobj != NULL);
3969 BFD_ASSERT (srelgot != NULL);
3970
3971 srelgot->size -= sizeof (Elf32_External_Rela);
3972 }
3973
3974 /* If the locally-defined symbol isn't used by a DSO, then we don't
3975 have to export it as a dynamic symbol. This was already done for
3976 functions; doing this for all symbols would presumably not
3977 introduce new problems. Of course we don't do this if we're
3978 exporting all dynamic symbols, or all data symbols, regardless of
3979 them being referenced or not. */
3980 if (! (info->export_dynamic
3981 || (h->root.type != STT_FUNC && info->dynamic_data))
3982 && h->root.dynindx != -1
3983 && !h->root.def_dynamic
3984 && !h->root.ref_dynamic)
3985 {
3986 h->root.dynindx = -1;
3987 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3988 h->root.dynstr_index);
3989 }
3990 }
3991
3992 return TRUE;
3993 }
3994
3995 /* Reject a file depending on presence and expectation of prefixed
3996 underscores on symbols. */
3997
3998 static bfd_boolean
3999 cris_elf_object_p (bfd *abfd)
4000 {
4001 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4002 return FALSE;
4003
4004 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4005 return (bfd_get_symbol_leading_char (abfd) == '_');
4006 else
4007 return (bfd_get_symbol_leading_char (abfd) == 0);
4008 }
4009
4010 /* Mark presence or absence of leading underscore. Set machine type
4011 flags from mach type. */
4012
4013 static void
4014 cris_elf_final_write_processing (bfd *abfd,
4015 bfd_boolean linker ATTRIBUTE_UNUSED)
4016 {
4017 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4018
4019 e_flags &= ~EF_CRIS_UNDERSCORE;
4020 if (bfd_get_symbol_leading_char (abfd) == '_')
4021 e_flags |= EF_CRIS_UNDERSCORE;
4022
4023 switch (bfd_get_mach (abfd))
4024 {
4025 case bfd_mach_cris_v0_v10:
4026 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4027 break;
4028
4029 case bfd_mach_cris_v10_v32:
4030 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4031 break;
4032
4033 case bfd_mach_cris_v32:
4034 e_flags |= EF_CRIS_VARIANT_V32;
4035 break;
4036
4037 default:
4038 _bfd_abort (__FILE__, __LINE__,
4039 _("Unexpected machine number"));
4040 }
4041
4042 elf_elfheader (abfd)->e_flags = e_flags;
4043 }
4044
4045 /* Set the mach type from e_flags value. */
4046
4047 static bfd_boolean
4048 cris_elf_set_mach_from_flags (bfd *abfd,
4049 unsigned long flags)
4050 {
4051 switch (flags & EF_CRIS_VARIANT_MASK)
4052 {
4053 case EF_CRIS_VARIANT_ANY_V0_V10:
4054 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4055 break;
4056
4057 case EF_CRIS_VARIANT_V32:
4058 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4059 break;
4060
4061 case EF_CRIS_VARIANT_COMMON_V10_V32:
4062 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4063 break;
4064
4065 default:
4066 /* Since we don't recognize them, we obviously can't support them
4067 with this code; we'd have to require that all future handling
4068 would be optional. */
4069 bfd_set_error (bfd_error_wrong_format);
4070 return FALSE;
4071 }
4072
4073 return TRUE;
4074 }
4075
4076 /* Display the flags field. */
4077
4078 static bfd_boolean
4079 cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
4080 {
4081 FILE *file = (FILE *) ptr;
4082
4083 BFD_ASSERT (abfd != NULL && ptr != NULL);
4084
4085 _bfd_elf_print_private_bfd_data (abfd, ptr);
4086
4087 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4088
4089 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4090 fprintf (file, _(" [symbols have a _ prefix]"));
4091 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4092 == EF_CRIS_VARIANT_COMMON_V10_V32)
4093 fprintf (file, _(" [v10 and v32]"));
4094 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4095 == EF_CRIS_VARIANT_V32)
4096 fprintf (file, _(" [v32]"));
4097
4098 fputc ('\n', file);
4099 return TRUE;
4100 }
4101
4102 /* Don't mix files with and without a leading underscore. */
4103
4104 static bfd_boolean
4105 cris_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4106 {
4107 bfd *obfd = info->output_bfd;
4108 int imach, omach;
4109
4110 if (! _bfd_generic_verify_endian_match (ibfd, info))
4111 return FALSE;
4112
4113 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4114 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4115 return TRUE;
4116
4117 imach = bfd_get_mach (ibfd);
4118
4119 if (! elf_flags_init (obfd))
4120 {
4121 /* This happens when ld starts out with a 'blank' output file. */
4122 elf_flags_init (obfd) = TRUE;
4123
4124 /* We ignore the linker-set mach, and instead set it according to
4125 the first input file. This would also happen if we could
4126 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4127 This allows us to keep the same linker config across
4128 cris(v0..v10) and crisv32. The drawback is that we can't force
4129 the output type, which might be a sane thing to do for a
4130 v10+v32 compatibility object. */
4131 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4132 return FALSE;
4133 }
4134
4135 if (bfd_get_symbol_leading_char (ibfd)
4136 != bfd_get_symbol_leading_char (obfd))
4137 {
4138 _bfd_error_handler
4139 (bfd_get_symbol_leading_char (ibfd) == '_'
4140 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4141 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4142 ibfd);
4143 bfd_set_error (bfd_error_bad_value);
4144 return FALSE;
4145 }
4146
4147 omach = bfd_get_mach (obfd);
4148
4149 if (imach != omach)
4150 {
4151 /* We can get an incompatible combination only if either is
4152 bfd_mach_cris_v32, and the other one isn't compatible. */
4153 if ((imach == bfd_mach_cris_v32
4154 && omach != bfd_mach_cris_v10_v32)
4155 || (omach == bfd_mach_cris_v32
4156 && imach != bfd_mach_cris_v10_v32))
4157 {
4158 _bfd_error_handler
4159 ((imach == bfd_mach_cris_v32)
4160 ? _("%B contains CRIS v32 code, incompatible"
4161 " with previous objects")
4162 : _("%B contains non-CRIS-v32 code, incompatible"
4163 " with previous objects"),
4164 ibfd);
4165 bfd_set_error (bfd_error_bad_value);
4166 return FALSE;
4167 }
4168
4169 /* We don't have to check the case where the input is compatible
4170 with v10 and v32, because the output is already known to be set
4171 to the other (compatible) mach. */
4172 if (omach == bfd_mach_cris_v10_v32
4173 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4174 return FALSE;
4175 }
4176
4177 return TRUE;
4178 }
4179
4180 /* Do side-effects of e_flags copying to obfd. */
4181
4182 static bfd_boolean
4183 cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4184 {
4185 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4186 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4187 return TRUE;
4188
4189 /* Call the base function. */
4190 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4191 return FALSE;
4192
4193 /* Do what we really came here for. */
4194 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4195 }
4196
4197 static enum elf_reloc_type_class
4198 elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4199 const asection *rel_sec ATTRIBUTE_UNUSED,
4200 const Elf_Internal_Rela *rela)
4201 {
4202 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4203 switch (r_type)
4204 {
4205 case R_CRIS_RELATIVE:
4206 return reloc_class_relative;
4207 case R_CRIS_JUMP_SLOT:
4208 return reloc_class_plt;
4209 case R_CRIS_COPY:
4210 return reloc_class_copy;
4211 default:
4212 return reloc_class_normal;
4213 }
4214 }
4215
4216 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4217 two GOT entries from three types with two different sizes. We handle
4218 it as a single entry, so we can use the regular offset-calculation
4219 machinery. */
4220
4221 static bfd_vma
4222 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4223 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4224 struct elf_link_hash_entry *hr,
4225 bfd *ibfd,
4226 unsigned long symndx)
4227 {
4228 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4229 bfd_vma eltsiz = 0;
4230
4231 /* We may have one regular GOT entry or up to two TLS GOT
4232 entries. */
4233 if (h == NULL)
4234 {
4235 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4236 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4237
4238 BFD_ASSERT (local_got_refcounts != NULL);
4239
4240 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4241 {
4242 /* We can't have a variable referred to both as a regular
4243 variable and through TLS relocs. */
4244 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4245 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4246 return 4;
4247 }
4248
4249 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4250 eltsiz += 8;
4251
4252 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4253 eltsiz += 4;
4254 }
4255 else
4256 {
4257 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4258 if (hh->reg_got_refcount > 0)
4259 {
4260 /* The actual error-on-input is emitted elsewhere. */
4261 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4262 return 4;
4263 }
4264
4265 if (hh->dtp_refcount > 0)
4266 eltsiz += 8;
4267
4268 if (hh->tprel_refcount > 0)
4269 eltsiz += 4;
4270 }
4271
4272 /* We're only called when h->got.refcount is non-zero, so we must
4273 have a non-zero size. */
4274 BFD_ASSERT (eltsiz != 0);
4275 return eltsiz;
4276 }
4277 \f
4278 #define ELF_ARCH bfd_arch_cris
4279 #define ELF_TARGET_ID CRIS_ELF_DATA
4280 #define ELF_MACHINE_CODE EM_CRIS
4281 #define ELF_MAXPAGESIZE 0x2000
4282
4283 #define TARGET_LITTLE_SYM cris_elf32_vec
4284 #define TARGET_LITTLE_NAME "elf32-cris"
4285 #define elf_symbol_leading_char 0
4286
4287 #define elf_info_to_howto_rel NULL
4288 #define elf_info_to_howto cris_info_to_howto_rela
4289 #define elf_backend_relocate_section cris_elf_relocate_section
4290 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4291 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4292 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4293 #define elf_backend_check_relocs cris_elf_check_relocs
4294 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4295 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4296
4297 #define elf_backend_can_gc_sections 1
4298 #define elf_backend_can_refcount 1
4299
4300 #define elf_backend_object_p cris_elf_object_p
4301 #define elf_backend_final_write_processing \
4302 cris_elf_final_write_processing
4303 #define bfd_elf32_bfd_print_private_bfd_data \
4304 cris_elf_print_private_bfd_data
4305 #define bfd_elf32_bfd_merge_private_bfd_data \
4306 cris_elf_merge_private_bfd_data
4307 #define bfd_elf32_bfd_copy_private_bfd_data \
4308 cris_elf_copy_private_bfd_data
4309
4310 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4311 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4312
4313 #define bfd_elf32_bfd_link_hash_table_create \
4314 elf_cris_link_hash_table_create
4315 #define elf_backend_adjust_dynamic_symbol \
4316 elf_cris_adjust_dynamic_symbol
4317 #define elf_backend_copy_indirect_symbol \
4318 elf_cris_copy_indirect_symbol
4319 #define elf_backend_size_dynamic_sections \
4320 elf_cris_size_dynamic_sections
4321 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4322 #define elf_backend_finish_dynamic_symbol \
4323 elf_cris_finish_dynamic_symbol
4324 #define elf_backend_finish_dynamic_sections \
4325 elf_cris_finish_dynamic_sections
4326 #define elf_backend_create_dynamic_sections \
4327 _bfd_elf_create_dynamic_sections
4328 #define bfd_elf32_bfd_final_link \
4329 bfd_elf_gc_common_final_link
4330 #define elf_backend_hide_symbol elf_cris_hide_symbol
4331 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4332
4333 #define elf_backend_want_got_plt 1
4334 #define elf_backend_plt_readonly 1
4335 #define elf_backend_want_plt_sym 0
4336 #define elf_backend_got_header_size 12
4337 #define elf_backend_got_elt_size elf_cris_got_elt_size
4338 #define elf_backend_dtrel_excludes_plt 1
4339 #define elf_backend_want_dynrelro 1
4340
4341 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4342 linking and libraries (if it's a win of any significance). Until then,
4343 take the easy route. */
4344 #define elf_backend_may_use_rel_p 0
4345 #define elf_backend_may_use_rela_p 1
4346 #define elf_backend_rela_normal 1
4347
4348 #include "elf32-target.h"
4349
4350 #undef TARGET_LITTLE_SYM
4351 #undef TARGET_LITTLE_NAME
4352 #undef elf_symbol_leading_char
4353
4354 #define TARGET_LITTLE_SYM cris_elf32_us_vec
4355 #define TARGET_LITTLE_NAME "elf32-us-cris"
4356 #define elf_symbol_leading_char '_'
4357 #undef elf32_bed
4358 #define elf32_bed elf32_us_cris_bed
4359
4360 #include "elf32-target.h"