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* elf32-cris.c (cris_elf_relocate_section) <case R_CRIS_32_DTPREL>:
[binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
24
25 #include "sysdep.h"
26 #include "bfd.h"
27 #include "libbfd.h"
28 #include "elf-bfd.h"
29 #include "elf/cris.h"
30 #include <limits.h>
31
32 /* Forward declarations. */
33 static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35
36 static void cris_info_to_howto_rela
37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
38
39 static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41
42 static bfd_boolean cris_elf_grok_prstatus
43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44
45 static bfd_boolean cris_elf_grok_psinfo
46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47
48 static bfd_boolean cris_elf_relocate_section
49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51
52 static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
55
56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
57
58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
59
60 static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
62
63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
64
65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
67
68 struct elf_cris_link_hash_entry;
69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71 static bfd_boolean elf_cris_discard_excess_program_dynamics
72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73 static bfd_boolean elf_cris_adjust_gotplt_to_got
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75 static bfd_boolean elf_cris_try_fold_plt_to_got
76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 PARAMS ((bfd *));
81 static bfd_boolean elf_cris_adjust_dynamic_symbol
82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
83 static bfd_boolean cris_elf_check_relocs
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86
87 static bfd_boolean elf_cris_size_dynamic_sections
88 PARAMS ((bfd *, struct bfd_link_info *));
89 static bfd_boolean elf_cris_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 Elf_Internal_Sym *));
92 static bfd_boolean elf_cris_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
94 static void elf_cris_hide_symbol
95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
96 static enum elf_reloc_type_class elf_cris_reloc_type_class
97 PARAMS ((const Elf_Internal_Rela *));
98
99 static reloc_howto_type cris_elf_howto_table [] =
100 {
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
103 0, /* rightshift */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
105 32, /* bitsize */
106 FALSE, /* pc_relative */
107 0, /* bitpos */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
111 FALSE, /* partial_inplace */
112 0, /* src_mask */
113 0, /* dst_mask */
114 FALSE), /* pcrel_offset */
115
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
118 0, /* rightshift */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
120 8, /* bitsize */
121 FALSE, /* pc_relative */
122 0, /* bitpos */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
126 FALSE, /* partial_inplace */
127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
129 FALSE), /* pcrel_offset */
130
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
133 0, /* rightshift */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
135 16, /* bitsize */
136 FALSE, /* pc_relative */
137 0, /* bitpos */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
141 FALSE, /* partial_inplace */
142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
144 FALSE), /* pcrel_offset */
145
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
148 0, /* rightshift */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
150 32, /* bitsize */
151 FALSE, /* pc_relative */
152 0, /* bitpos */
153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
161 FALSE, /* partial_inplace */
162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
164 FALSE), /* pcrel_offset */
165
166 /* An 8 bit PC-relative relocation. */
167 HOWTO (R_CRIS_8_PCREL, /* type */
168 0, /* rightshift */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
170 8, /* bitsize */
171 TRUE, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 cris_elf_pcrel_reloc, /* special_function */
175 "R_CRIS_8_PCREL", /* name */
176 FALSE, /* partial_inplace */
177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
179 TRUE), /* pcrel_offset */
180
181 /* A 16 bit PC-relative relocation. */
182 HOWTO (R_CRIS_16_PCREL, /* type */
183 0, /* rightshift */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
185 16, /* bitsize */
186 TRUE, /* pc_relative */
187 0, /* bitpos */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 cris_elf_pcrel_reloc, /* special_function */
190 "R_CRIS_16_PCREL", /* name */
191 FALSE, /* partial_inplace */
192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
194 TRUE), /* pcrel_offset */
195
196 /* A 32 bit PC-relative relocation. */
197 HOWTO (R_CRIS_32_PCREL, /* type */
198 0, /* rightshift */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
200 32, /* bitsize */
201 TRUE, /* pc_relative */
202 0, /* bitpos */
203 complain_overflow_bitfield, /* complain_on_overflow */
204 cris_elf_pcrel_reloc, /* special_function */
205 "R_CRIS_32_PCREL", /* name */
206 FALSE, /* partial_inplace */
207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
209 TRUE), /* pcrel_offset */
210
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
213 0, /* rightshift */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 0, /* bitsize */
216 FALSE, /* pc_relative */
217 0, /* bitpos */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
222 0, /* src_mask */
223 0, /* dst_mask */
224 FALSE), /* pcrel_offset */
225
226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
228 0, /* rightshift */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
231 FALSE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
236 FALSE, /* partial_inplace */
237 0, /* src_mask */
238 0, /* dst_mask */
239 FALSE), /* pcrel_offset */
240
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
247 0, /* rightshift */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
249 32, /* bitsize */
250 FALSE, /* pc_relative */
251 0, /* bitpos */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
255 FALSE, /* partial_inplace */
256 0, /* src_mask */
257 0, /* dst_mask */
258 FALSE), /* pcrel_offset */
259
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* 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_GLOB_DAT", /* name */
270 FALSE, /* partial_inplace */
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 32, /* bitsize */
280 FALSE, /* pc_relative */
281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
285 FALSE, /* partial_inplace */
286 0, /* src_mask */
287 0, /* dst_mask */
288 FALSE), /* pcrel_offset */
289
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
292 addend. */
293 HOWTO (R_CRIS_RELATIVE, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 32, /* bitsize */
297 FALSE, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
302 FALSE, /* partial_inplace */
303 0, /* src_mask */
304 0xffffffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
306
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
309 0, /* rightshift */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
311 16, /* bitsize */
312 FALSE, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
317 FALSE, /* partial_inplace */
318 0, /* src_mask */
319 0xffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
321
322 HOWTO (R_CRIS_32_GOT, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 32, /* bitsize */
326 FALSE, /* pc_relative */
327 0, /* bitpos */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
331 FALSE, /* partial_inplace */
332 0, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
335
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
339 0, /* rightshift */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
342 FALSE, /* pc_relative */
343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
347 FALSE, /* partial_inplace */
348 0, /* src_mask */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
351
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
356 FALSE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
361 FALSE, /* partial_inplace */
362 0, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
365
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 be necessary. */
368 HOWTO (R_CRIS_32_GOTREL, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 32, /* bitsize */
372 FALSE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 0xffffffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
381
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 32, /* bitsize */
388 FALSE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 0xffffffff, /* dst_mask */
396 FALSE), /* pcrel_offset */
397
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
400 symbol. */
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 32, /* bitsize */
405 TRUE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_bitfield, /* complain_on_overflow */
408 cris_elf_pcrel_reloc, /* special_function */
409 "R_CRIS_32_PLT_PCREL", /* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0xffffffff, /* dst_mask */
413 TRUE), /* pcrel_offset */
414
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420 #define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
423 #define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
428
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
434 TLSHOWTO16S (R_CRIS_16_DTPREL),
435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
437 TLSHOWTO32 (R_CRIS_32_TPREL),
438 TLSHOWTO16S (R_CRIS_16_TPREL),
439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
441 };
442 \f
443 /* Map BFD reloc types to CRIS ELF reloc types. */
444
445 struct cris_reloc_map
446 {
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
449 };
450
451 static const struct cris_reloc_map cris_reloc_map [] =
452 {
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
485 };
486
487 static reloc_howto_type *
488 cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
491 {
492 unsigned int i;
493
494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
497
498 return NULL;
499 }
500
501 static reloc_howto_type *
502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
503 {
504 unsigned int i;
505
506 for (i = 0;
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
508 i++)
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
512
513 return NULL;
514 }
515
516 /* Set the howto pointer for an CRIS ELF reloc. */
517
518 static void
519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
521 arelent * cache_ptr;
522 Elf_Internal_Rela * dst;
523 {
524 enum elf_cris_reloc_type r_type;
525
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
529 }
530
531 bfd_reloc_status_type
532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
536 asymbol *symbol;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
539 bfd *output_bfd;
540 char **error_message ATTRIBUTE_UNUSED;
541 {
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
549
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
553
554 return
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
557 }
558 \f
559 /* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
563
564 static bfd_boolean
565 cris_elf_grok_prstatus (abfd, note)
566 bfd *abfd;
567 Elf_Internal_Note *note;
568 {
569 int offset;
570 size_t size;
571
572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
574 {
575 default:
576 return FALSE;
577
578 case 202: /* Linux/CRISv32 */
579 /* pr_cursig */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
581
582 /* pr_pid */
583 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
584
585 /* pr_reg */
586 offset = 70;
587 size = 128;
588
589 break;
590 }
591 else
592 switch (note->descsz)
593 {
594 default:
595 return FALSE;
596
597 case 214: /* Linux/CRIS */
598 /* pr_cursig */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
600
601 /* pr_pid */
602 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
603
604 /* pr_reg */
605 offset = 70;
606 size = 140;
607
608 break;
609 }
610
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
613 size, note->descpos + offset);
614 }
615
616 static bfd_boolean
617 cris_elf_grok_psinfo (abfd, note)
618 bfd *abfd;
619 Elf_Internal_Note *note;
620 {
621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
623 {
624 default:
625 return FALSE;
626
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
632 }
633 else
634 switch (note->descsz)
635 {
636 default:
637 return FALSE;
638
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
642 elf_tdata (abfd)->core_command
643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
644 }
645
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
649
650 {
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
653
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
656 }
657
658 return TRUE;
659 }
660 \f
661 /* The name of the dynamic interpreter. This is put in the .interp
662 section. */
663
664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
665
666 /* The size in bytes of an entry in the procedure linkage table. */
667
668 #define PLT_ENTRY_SIZE 20
669 #define PLT_ENTRY_SIZE_V32 26
670
671 /* The first entry in an absolute procedure linkage table looks like this. */
672
673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
674 {
675 0xfc, 0xe1,
676 0x7e, 0x7e, /* push mof. */
677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
682 0x30, 0x09 /* jump [...] */
683 };
684
685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
686 {
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
697 };
698
699 /* Subsequent entries in an absolute procedure linkage table look like
700 this. */
701
702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
703 {
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
710 0xec, 0xff,
711 0xff, 0xff /* Replaced with offset to start of .plt. */
712 };
713
714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
715 {
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
725 0xb0, 0x05 /* nop */
726 };
727
728 /* The first entry in a PIC procedure linkage table looks like this. */
729
730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
731 {
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
736 };
737
738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
739 {
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
749 0, 0, 0, 0,
750 0, 0, 0, 0
751 };
752
753 /* Subsequent entries in a PIC procedure linkage table look like this. */
754
755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
756 {
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
764 0xff, 0xff
765 };
766
767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
768 {
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
778 0xb0, 0x05 /* nop */
779 };
780 \f
781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
783 without reason.
784
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
791
792 /* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
794
795 struct elf_cris_pcrel_relocs_copied
796 {
797 /* Next section. */
798 struct elf_cris_pcrel_relocs_copied *next;
799
800 /* A section in dynobj. */
801 asection *section;
802
803 /* Number of relocs copied in this section. */
804 bfd_size_type count;
805
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
808 };
809
810 /* CRIS ELF linker hash entry. */
811
812 struct elf_cris_link_hash_entry
813 {
814 struct elf_link_hash_entry root;
815
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
818
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
822
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
825
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
831
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
837
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
844
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
849 };
850
851 /* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
857 3*LSNUM. */
858
859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
863
864 /* CRIS ELF linker hash table. */
865
866 struct elf_cris_link_hash_table
867 {
868 struct elf_link_hash_table root;
869
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
874
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
881 };
882
883 /* Traverse a CRIS ELF linker hash table. */
884
885 #define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
887 (&(table)->root, \
888 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
889 (info)))
890
891 /* Get the CRIS ELF linker hash table from a link_info structure. */
892
893 #define elf_cris_hash_table(p) \
894 ((struct elf_cris_link_hash_table *) (p)->hash)
895
896 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
897 "parent class"). The .root reference is just a simple type
898 check on the argument. */
899
900 #define elf_cris_hash_entry(p) \
901 ((struct elf_cris_link_hash_entry *) (&(p)->root))
902
903 /* Create an entry in a CRIS ELF linker hash table. */
904
905 static struct bfd_hash_entry *
906 elf_cris_link_hash_newfunc (entry, table, string)
907 struct bfd_hash_entry *entry;
908 struct bfd_hash_table *table;
909 const char *string;
910 {
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
913
914 /* Allocate the structure if it has not already been allocated by a
915 subclass. */
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
922
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
926 table, string));
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
928 {
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
935 }
936
937 return (struct bfd_hash_entry *) ret;
938 }
939
940 /* Create a CRIS ELF linker hash table. */
941
942 static struct bfd_link_hash_table *
943 elf_cris_link_hash_table_create (abfd)
944 bfd *abfd;
945 {
946 struct elf_cris_link_hash_table *ret;
947 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
948
949 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
950 if (ret == (struct elf_cris_link_hash_table *) NULL)
951 return NULL;
952
953 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
954 elf_cris_link_hash_newfunc,
955 sizeof (struct elf_cris_link_hash_entry)))
956 {
957 free (ret);
958 return NULL;
959 }
960
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
964
965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
967
968 return &ret->root.root;
969 }
970 \f
971 /* Perform a single relocation. By default we use the standard BFD
972 routines, with a few tweaks. */
973
974 static bfd_reloc_status_type
975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
976 relocation)
977 reloc_howto_type * howto;
978 bfd * input_bfd;
979 asection * input_section;
980 bfd_byte * contents;
981 Elf_Internal_Rela * rel;
982 bfd_vma relocation;
983 {
984 bfd_reloc_status_type r;
985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
986
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
990 switch (r_type)
991 {
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
994 case R_CRIS_16_GOT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
997 break;
998
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1001 relocation -= 2;
1002 /* Fall through. */
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1005 relocation -= 2;
1006 break;
1007
1008 default:
1009 break;
1010 }
1011
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1015 return r;
1016 }
1017 \f
1018
1019 /* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024 static int additional_relocation_error_msg_count = 10;
1025
1026 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1028
1029 static bfd_boolean
1030 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031 contents, relocs, local_syms, local_sections)
1032 bfd *output_bfd ATTRIBUTE_UNUSED;
1033 struct bfd_link_info *info;
1034 bfd *input_bfd;
1035 asection *input_section;
1036 bfd_byte *contents;
1037 Elf_Internal_Rela *relocs;
1038 Elf_Internal_Sym *local_syms;
1039 asection **local_sections;
1040 {
1041 bfd *dynobj;
1042 Elf_Internal_Shdr *symtab_hdr;
1043 struct elf_link_hash_entry **sym_hashes;
1044 bfd_vma *local_got_offsets;
1045 asection *sgot;
1046 asection *splt;
1047 asection *sreloc;
1048 Elf_Internal_Rela *rel;
1049 Elf_Internal_Rela *relend;
1050 asection *srelgot;
1051
1052 dynobj = elf_hash_table (info)->dynobj;
1053 local_got_offsets = elf_local_got_offsets (input_bfd);
1054 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055 sym_hashes = elf_sym_hashes (input_bfd);
1056 relend = relocs + input_section->reloc_count;
1057
1058 sgot = NULL;
1059 splt = NULL;
1060 sreloc = NULL;
1061 srelgot = NULL;
1062
1063 if (dynobj != NULL)
1064 {
1065 splt = bfd_get_section_by_name (dynobj, ".plt");
1066 sgot = bfd_get_section_by_name (dynobj, ".got");
1067 }
1068
1069 for (rel = relocs; rel < relend; rel ++)
1070 {
1071 reloc_howto_type *howto;
1072 unsigned long r_symndx;
1073 Elf_Internal_Sym *sym;
1074 asection *sec;
1075 struct elf_link_hash_entry *h;
1076 bfd_vma relocation;
1077 bfd_reloc_status_type r;
1078 const char *symname = NULL;
1079 enum elf_cris_reloc_type r_type;
1080
1081 r_type = ELF32_R_TYPE (rel->r_info);
1082
1083 if ( r_type == R_CRIS_GNU_VTINHERIT
1084 || r_type == R_CRIS_GNU_VTENTRY)
1085 continue;
1086
1087 r_symndx = ELF32_R_SYM (rel->r_info);
1088 howto = cris_elf_howto_table + r_type;
1089 h = NULL;
1090 sym = NULL;
1091 sec = NULL;
1092
1093 if (r_symndx < symtab_hdr->sh_info)
1094 {
1095 sym = local_syms + r_symndx;
1096 sec = local_sections [r_symndx];
1097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1098
1099 symname = (bfd_elf_string_from_elf_section
1100 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101 if (symname == NULL)
1102 symname = bfd_section_name (input_bfd, sec);
1103 }
1104 else
1105 {
1106 bfd_boolean warned;
1107 bfd_boolean unresolved_reloc;
1108
1109 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110 r_symndx, symtab_hdr, sym_hashes,
1111 h, sec, relocation,
1112 unresolved_reloc, warned);
1113
1114 symname = h->root.root.string;
1115
1116 if (unresolved_reloc
1117 /* Perhaps we should detect the cases that
1118 sec->output_section is expected to be NULL like i386 and
1119 m68k, but apparently (and according to elfxx-ia64.c) all
1120 valid cases are where the symbol is defined in a shared
1121 object which we link dynamically against. This includes
1122 PLT relocs for which we've created a PLT entry and other
1123 relocs for which we're prepared to create dynamic
1124 relocations.
1125
1126 For now, new situations cause us to just err when
1127 sec->output_offset is NULL but the object with the symbol
1128 is *not* dynamically linked against. Thus this will
1129 automatically remind us so we can see if there are other
1130 valid cases we need to revisit. */
1131 && (sec->owner->flags & DYNAMIC) != 0)
1132 relocation = 0;
1133
1134 else if (h->root.type == bfd_link_hash_defined
1135 || h->root.type == bfd_link_hash_defweak)
1136 {
1137 /* Here follow the cases where the relocation value must
1138 be zero (or when further handling is simplified when
1139 zero). I can't claim to understand the various
1140 conditions and they weren't described in the files
1141 where I copied them from (elf32-m68k.c and
1142 elf32-i386.c), but let's mention examples of where
1143 they happen. FIXME: Perhaps define and use a
1144 dynamic_symbol_p function like ia64.
1145
1146 - When creating a shared library, we can have an
1147 ordinary relocation for a symbol defined in a shared
1148 library (perhaps the one we create). We then make
1149 the relocation value zero, as the value seen now will
1150 be added into the relocation addend in this shared
1151 library, but must be handled only at dynamic-link
1152 time. FIXME: Not sure this example covers the
1153 h->elf_link_hash_flags test, though it's there in
1154 other targets. */
1155 if (info->shared
1156 && ((! info->symbolic && h->dynindx != -1)
1157 || !h->def_regular)
1158 && (input_section->flags & SEC_ALLOC) != 0
1159 && (r_type == R_CRIS_8
1160 || r_type == R_CRIS_16
1161 || r_type == R_CRIS_32
1162 || r_type == R_CRIS_8_PCREL
1163 || r_type == R_CRIS_16_PCREL
1164 || r_type == R_CRIS_32_PCREL))
1165 relocation = 0;
1166 else if (!info->relocatable && unresolved_reloc)
1167 {
1168 _bfd_error_handler
1169 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1170 input_bfd,
1171 input_section,
1172 cris_elf_howto_table[r_type].name,
1173 symname);
1174 bfd_set_error (bfd_error_bad_value);
1175 return FALSE;
1176 }
1177 }
1178 }
1179
1180 if (sec != NULL && elf_discarded_section (sec))
1181 {
1182 /* For relocs against symbols from removed linkonce sections,
1183 or sections discarded by a linker script, we just want the
1184 section contents zeroed. Avoid any special processing. */
1185 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186 rel->r_info = 0;
1187 rel->r_addend = 0;
1188 continue;
1189 }
1190
1191 if (info->relocatable)
1192 continue;
1193
1194 switch (r_type)
1195 {
1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1203 if (h != NULL
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205 {
1206 asection *sgotplt
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 bfd_vma got_offset;
1209
1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
1212
1213 got_offset
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1215
1216 relocation = got_offset;
1217 break;
1218 }
1219
1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1229 if (h != NULL
1230 && (h->got.offset == (bfd_vma) -1
1231 || (!info->shared
1232 && !(h->def_regular
1233 || (!h->def_dynamic
1234 && h->root.type == bfd_link_hash_undefweak)))))
1235 {
1236 (*_bfd_error_handler)
1237 ((h->got.offset == (bfd_vma) -1)
1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239 " against symbol `%s'")
1240 : _("%B, section %A: No PLT for relocation %s"
1241 " against symbol `%s'"),
1242 input_bfd,
1243 input_section,
1244 cris_elf_howto_table[r_type].name,
1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
1247
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
1252 return FALSE;
1253 }
1254 /* Fall through. */
1255
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1258 case R_CRIS_16_GOT:
1259 case R_CRIS_32_GOT:
1260 {
1261 bfd_vma off;
1262
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1266
1267 if (h != NULL)
1268 {
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272 if (!elf_hash_table (info)->dynamic_sections_created
1273 || (! info->shared
1274 && (h->def_regular
1275 || h->type == STT_FUNC
1276 || h->needs_plt))
1277 || (info->shared
1278 && (info->symbolic || h->dynindx == -1)
1279 && h->def_regular))
1280 {
1281 /* This wasn't checked above for ! info->shared, but
1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || info->shared
1287 || h->def_regular
1288 || h->type == STT_FUNC
1289 || h->needs_plt
1290 || h->root.type == bfd_link_hash_undefweak);
1291
1292 /* This is actually a static link, or it is a
1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1301
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
1306 if ((off & 1) != 0)
1307 off &= ~1;
1308 else
1309 {
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1312 h->got.offset |= 1;
1313 }
1314 }
1315 }
1316 else
1317 {
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321 off = local_got_offsets[r_symndx];
1322
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1326 if ((off & 1) != 0)
1327 off &= ~1;
1328 else
1329 {
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332 if (info->shared)
1333 {
1334 Elf_Internal_Rela outrel;
1335 bfd_byte *loc;
1336
1337 if (srelgot == NULL)
1338 srelgot
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
1341
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1344 + off);
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350 }
1351
1352 local_got_offsets[r_symndx] |= 1;
1353 }
1354 }
1355
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1358 {
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1363 if (h == NULL)
1364 (*_bfd_error_handler)
1365 (_("%B, section %A: relocation %s with non-zero addend %d"
1366 " against local symbol"),
1367 input_bfd,
1368 input_section,
1369 cris_elf_howto_table[r_type].name,
1370 rel->r_addend);
1371 else
1372 (*_bfd_error_handler)
1373 (_("%B, section %A: relocation %s with non-zero addend %d"
1374 " against symbol `%s'"),
1375 input_bfd,
1376 input_section,
1377 cris_elf_howto_table[r_type].name,
1378 rel->r_addend,
1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1380
1381 bfd_set_error (bfd_error_bad_value);
1382 return FALSE;
1383 }
1384 }
1385 break;
1386
1387 case R_CRIS_32_GOTREL:
1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1391 if (h != NULL
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393 && !(!info->shared
1394 && (h->def_regular
1395 || (!h->def_dynamic
1396 && h->root.type == bfd_link_hash_undefweak))))
1397 {
1398 (*_bfd_error_handler)
1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
1401 input_bfd,
1402 input_section,
1403 cris_elf_howto_table[r_type].name,
1404 symname);
1405 bfd_set_error (bfd_error_bad_value);
1406 return FALSE;
1407 }
1408
1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1412 if (sgot == NULL)
1413 {
1414 (*_bfd_error_handler)
1415 (_("%B, section %A: relocation %s with no GOT created"),
1416 input_bfd,
1417 input_section,
1418 cris_elf_howto_table[r_type].name);
1419 bfd_set_error (bfd_error_bad_value);
1420 return FALSE;
1421 }
1422
1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1429 break;
1430
1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
1434
1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438 break;
1439
1440 if (h->plt.offset == (bfd_vma) -1
1441 || splt == NULL)
1442 {
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1446 break;
1447 }
1448
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1451 + h->plt.offset);
1452 break;
1453
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1457 R_CRIS_32_GOT. */
1458 relocation -= sgot->output_section->vma;
1459
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463 break;
1464
1465 if (h->plt.offset == (bfd_vma) -1
1466 || splt == NULL)
1467 {
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1471 break;
1472 }
1473
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1476 + h->plt.offset
1477 - sgot->output_section->vma);
1478 break;
1479
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
1486 break;
1487
1488 /* Fall through. */
1489 case R_CRIS_8:
1490 case R_CRIS_16:
1491 case R_CRIS_32:
1492 if (info->shared
1493 && r_symndx != 0
1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1498 || (!info->symbolic
1499 || (h != NULL && !h->def_regular))))
1500 {
1501 Elf_Internal_Rela outrel;
1502 bfd_byte *loc;
1503 bfd_boolean skip, relocate;
1504
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1507 time. */
1508
1509 if (sreloc == NULL)
1510 {
1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (input_bfd, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
1515 cris_elf_merge_private_bfd_data. */
1516 if (sreloc == NULL)
1517 {
1518 bfd_set_error (bfd_error_bad_value);
1519 return FALSE;
1520 }
1521 }
1522
1523 skip = FALSE;
1524 relocate = FALSE;
1525
1526 outrel.r_offset =
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1528 rel->r_offset);
1529 if (outrel.r_offset == (bfd_vma) -1)
1530 skip = TRUE;
1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1537 relocation. */
1538 || (h != NULL
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1541 skip = TRUE, relocate = TRUE;
1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1544
1545 if (skip)
1546 memset (&outrel, 0, sizeof outrel);
1547 /* h->dynindx may be -1 if the symbol was marked to
1548 become local. */
1549 else if (h != NULL
1550 && ((! info->symbolic && h->dynindx != -1)
1551 || !h->def_regular))
1552 {
1553 BFD_ASSERT (h->dynindx != -1);
1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1556 }
1557 else
1558 {
1559 outrel.r_addend = relocation + rel->r_addend;
1560
1561 if (r_type == R_CRIS_32)
1562 {
1563 relocate = TRUE;
1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1565 }
1566 else
1567 {
1568 long indx;
1569
1570 if (bfd_is_abs_section (sec))
1571 indx = 0;
1572 else if (sec == NULL || sec->owner == NULL)
1573 {
1574 bfd_set_error (bfd_error_bad_value);
1575 return FALSE;
1576 }
1577 else
1578 {
1579 asection *osec;
1580
1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
1588 if (indx == 0)
1589 {
1590 struct elf_cris_link_hash_table *htab;
1591 htab = elf_cris_hash_table (info);
1592 osec = htab->root.text_index_section;
1593 indx = elf_section_data (osec)->dynindx;
1594 }
1595 BFD_ASSERT (indx != 0);
1596 }
1597
1598 outrel.r_info = ELF32_R_INFO (indx, r_type);
1599 }
1600 }
1601
1602 loc = sreloc->contents;
1603 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1605
1606 /* This reloc will be computed at runtime, so there's no
1607 need to do anything now, except for R_CRIS_32 relocations
1608 that have been turned into R_CRIS_RELATIVE. */
1609 if (!relocate)
1610 continue;
1611 }
1612
1613 break;
1614
1615 case R_CRIS_16_DTPREL:
1616 case R_CRIS_32_DTPREL:
1617 /* This relocation must only be performed against local
1618 symbols, or to sections that are not loadable. It's also
1619 ok when we link a program and the symbol is defined in an
1620 ordinary (non-DSO) object (if it's undefined there, we've
1621 already seen an error). */
1622 if (h != NULL
1623 && (input_section->flags & SEC_ALLOC) != 0
1624 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1625 && (info->shared
1626 || (!h->def_regular
1627 && h->root.type != bfd_link_hash_undefined)))
1628 {
1629 (*_bfd_error_handler)
1630 ((h->root.type == bfd_link_hash_undefined)
1631 /* We shouldn't get here for GCC-emitted code. */
1632 ? _("%B, section %A: relocation %s has an undefined"
1633 " reference to `%s', perhaps a declaration mixup?")
1634 : ("%B, section %A: relocation %s is"
1635 " not allowed for `%s', a global symbol with default"
1636 " visibility, perhaps a declaration mixup?"),
1637 input_bfd,
1638 input_section,
1639 cris_elf_howto_table[r_type].name,
1640 symname != NULL && symname[0] != '\0'
1641 ? symname : _("[whose name is lost]"));
1642 bfd_set_error (bfd_error_bad_value);
1643 return FALSE;
1644 }
1645
1646 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1647 || elf_cris_hash_table (info)->dtpmod_refcount != 0);
1648
1649 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1650 already done so. Note that we do this in .got.plt, not
1651 in .got, as .got.plt contains the first part, still the
1652 reloc is against .got, because the linker script directs
1653 (is required to direct) them both into .got. */
1654 if (elf_cris_hash_table (info)->dtpmod_refcount > 0
1655 && (input_section->flags & SEC_ALLOC) != 0)
1656 {
1657 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1658 BFD_ASSERT (sgotplt != NULL);
1659
1660 if (info->shared)
1661 {
1662 Elf_Internal_Rela outrel;
1663 bfd_byte *loc;
1664
1665 if (srelgot == NULL)
1666 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1667 BFD_ASSERT (srelgot != NULL);
1668 loc = srelgot->contents;
1669 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1670
1671 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1672 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1673 outrel.r_offset = (sgotplt->output_section->vma
1674 + sgotplt->output_offset
1675 + 12);
1676 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1677 outrel.r_addend = 0;
1678 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1679 }
1680 else
1681 {
1682 /* For an executable, the GOT entry contents is known. */
1683 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1684 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1685 }
1686
1687 /* Reverse the sign to mark that we've emitted the
1688 required GOT entry. */
1689 elf_cris_hash_table (info)->dtpmod_refcount
1690 = -elf_cris_hash_table (info)->dtpmod_refcount;
1691 }
1692
1693 /* The relocation is the offset from the start of the module
1694 TLS block to the (local) symbol. */
1695 relocation -= elf_hash_table (info)->tls_sec == NULL
1696 ? 0 : elf_hash_table (info)->tls_sec->vma;
1697 break;
1698
1699 case R_CRIS_32_GD:
1700 if (info->shared)
1701 {
1702 bfd_set_error (bfd_error_invalid_operation);
1703
1704 /* We've already informed in cris_elf_check_relocs that
1705 this is an error. */
1706 return FALSE;
1707 }
1708 /* Fall through. */
1709
1710 case R_CRIS_16_GOT_GD:
1711 case R_CRIS_32_GOT_GD:
1712 if (rel->r_addend != 0)
1713 {
1714 /* We can't do anything for a relocation which is against a
1715 symbol *plus offset*. The GOT holds relocations for
1716 symbols. Make this an error; the compiler isn't allowed
1717 to pass us these kinds of things. */
1718 (*_bfd_error_handler)
1719 (_("%B, section %A: relocation %s with non-zero addend %d"
1720 " against symbol `%s'"),
1721 input_bfd,
1722 input_section,
1723 cris_elf_howto_table[r_type].name,
1724 rel->r_addend,
1725 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1726
1727 bfd_set_error (bfd_error_bad_value);
1728 return FALSE;
1729 }
1730
1731 if (!info->shared
1732 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1733 {
1734 /* Known contents of the GOT. */
1735 bfd_vma off;
1736
1737 /* The symbol is defined in the program, so just write
1738 (1, known_tpoffset) into the GOT. */
1739 relocation -= elf_hash_table (info)->tls_sec->vma;
1740
1741 if (h != NULL)
1742 {
1743 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1744 ? h->got.offset + 4 : h->got.offset;
1745 }
1746 else
1747 {
1748 off = local_got_offsets[r_symndx];
1749 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1750 off += 4;
1751 }
1752
1753 /* We use bit 1 of the offset as a flag for GOT entry with
1754 the R_CRIS_DTP reloc, setting it when we've emitted the
1755 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1756 relocs. */
1757 if ((off & 2) == 0)
1758 {
1759 off &= ~3;
1760
1761 if (h != NULL)
1762 h->got.offset |= 2;
1763 else
1764 local_got_offsets[r_symndx] |= 2;
1765
1766 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1767 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1768 }
1769 else
1770 off &= ~3;
1771
1772 relocation = sgot->output_offset + off
1773 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1774 }
1775 else
1776 {
1777 /* Not all parts of the GOT entry are known; emit a real
1778 relocation. */
1779 bfd_vma off;
1780
1781 if (h != NULL)
1782 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1783 ? h->got.offset + 4 : h->got.offset;
1784 else
1785 {
1786 off = local_got_offsets[r_symndx];
1787 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1788 off += 4;
1789 }
1790
1791 /* See above re bit 1 and bit 0 usage. */
1792 if ((off & 2) == 0)
1793 {
1794 Elf_Internal_Rela outrel;
1795 bfd_byte *loc;
1796
1797 off &= ~3;
1798
1799 if (h != NULL)
1800 h->got.offset |= 2;
1801 else
1802 local_got_offsets[r_symndx] |= 2;
1803
1804 /* Clear the target contents of the GOT (just as a
1805 gesture; it's already cleared on allocation): this
1806 relocation is not like the other dynrelocs. */
1807 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1808 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1809
1810 if (srelgot == NULL)
1811 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1812 BFD_ASSERT (srelgot != NULL);
1813
1814 if (h != NULL && h->dynindx != -1)
1815 {
1816 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1817 relocation = 0;
1818 }
1819 else
1820 {
1821 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1822
1823 /* NULL if we had an error. */
1824 relocation -= elf_hash_table (info)->tls_sec == NULL
1825 ? 0 : elf_hash_table (info)->tls_sec->vma;
1826 }
1827
1828 outrel.r_offset = (sgot->output_section->vma
1829 + sgot->output_offset
1830 + off);
1831 outrel.r_addend = relocation;
1832 loc = srelgot->contents;
1833 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1834
1835 /* NULL if we had an error. */
1836 if (srelgot->contents != NULL)
1837 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1838 }
1839 else
1840 off &= ~3;
1841
1842 relocation = sgot->output_offset + off
1843 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1844 }
1845
1846 /* The GOT-relative offset to the GOT entry is the
1847 relocation, or for R_CRIS_32_GD, the actual address of
1848 the GOT entry. */
1849 break;
1850
1851 case R_CRIS_32_IE:
1852 if (info->shared)
1853 {
1854 bfd_set_error (bfd_error_invalid_operation);
1855
1856 /* We've already informed in cris_elf_check_relocs that
1857 this is an error. */
1858 return FALSE;
1859 }
1860 /* Fall through. */
1861
1862 case R_CRIS_32_GOT_TPREL:
1863 case R_CRIS_16_GOT_TPREL:
1864 if (rel->r_addend != 0)
1865 {
1866 /* We can't do anything for a relocation which is
1867 against a symbol *plus offset*. GOT holds
1868 relocations for symbols. Make this an error; the
1869 compiler isn't allowed to pass us these kinds of
1870 things. */
1871 (*_bfd_error_handler)
1872 (_("%B, section %A: relocation %s with non-zero addend %d"
1873 " against symbol `%s'"),
1874 input_bfd,
1875 input_section,
1876 cris_elf_howto_table[r_type].name,
1877 rel->r_addend,
1878 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1879 bfd_set_error (bfd_error_bad_value);
1880 return FALSE;
1881 }
1882
1883 if (!info->shared && (h == NULL || h->def_regular))
1884 {
1885 /* Known contents of the GOT. */
1886 bfd_vma off;
1887
1888 /* The symbol is defined in the program, so just write
1889 the -prog_tls_size+known_tpoffset into the GOT. */
1890 relocation -= elf_hash_table (info)->tls_sec->vma;
1891 relocation -= elf_hash_table (info)->tls_size;
1892
1893 if (h != NULL)
1894 off = h->got.offset;
1895 else
1896 off = local_got_offsets[r_symndx];
1897
1898 /* Bit 0 is used to mark whether we've emitted the required
1899 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1900 is used similarly for R_CRIS_DTP, see above. */
1901 if ((off & 1) == 0)
1902 {
1903 off &= ~3;
1904
1905 if (h != NULL)
1906 h->got.offset |= 1;
1907 else
1908 local_got_offsets[r_symndx] |= 1;
1909
1910 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1911 }
1912 else
1913 off &= ~3;
1914
1915 relocation = sgot->output_offset + off
1916 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1917 }
1918 else
1919 {
1920 /* Emit a real relocation. */
1921 bfd_vma off;
1922
1923 if (h != NULL)
1924 off = h->got.offset;
1925 else
1926 off = local_got_offsets[r_symndx];
1927
1928 /* See above re usage of bit 0 and 1. */
1929 if ((off & 1) == 0)
1930 {
1931 Elf_Internal_Rela outrel;
1932 bfd_byte *loc;
1933
1934 off &= ~3;
1935
1936 if (h != NULL)
1937 h->got.offset |= 1;
1938 else
1939 local_got_offsets[r_symndx] |= 1;
1940
1941 if (srelgot == NULL)
1942 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1943 BFD_ASSERT (srelgot != NULL);
1944
1945 if (h != NULL && h->dynindx != -1)
1946 {
1947 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1948 relocation = 0;
1949 }
1950 else
1951 {
1952 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1953
1954 /* NULL if we had an error. */
1955 relocation -= elf_hash_table (info)->tls_sec == NULL
1956 ? 0 : elf_hash_table (info)->tls_sec->vma;
1957 }
1958
1959 /* Just "define" the initial contents in some
1960 semi-logical way. */
1961 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1962
1963 outrel.r_offset = (sgot->output_section->vma
1964 + sgot->output_offset
1965 + off);
1966 outrel.r_addend = relocation;
1967 loc = srelgot->contents;
1968 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1969 /* NULL if we had an error. */
1970 if (srelgot->contents != NULL)
1971 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1972 }
1973 else
1974 off &= ~3;
1975
1976 relocation = sgot->output_offset + off
1977 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1978 }
1979
1980 /* The GOT-relative offset to the GOT entry is the relocation,
1981 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1982 break;
1983
1984 case R_CRIS_16_TPREL:
1985 case R_CRIS_32_TPREL:
1986 /* This relocation must only be performed against symbols
1987 defined in an ordinary (non-DSO) object. */
1988 if (info->shared)
1989 {
1990 bfd_set_error (bfd_error_invalid_operation);
1991
1992 /* We've already informed in cris_elf_check_relocs that
1993 this is an error. */
1994 return FALSE;
1995 }
1996
1997 if (h != NULL
1998 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1999 && !(h->def_regular || ELF_COMMON_DEF_P (h))
2000 /* If it's undefined, then an error message has already
2001 been emitted. */
2002 && h->root.type != bfd_link_hash_undefined)
2003 {
2004 (*_bfd_error_handler)
2005 (_("%B, section %A: relocation %s is"
2006 " not allowed for symbol: `%s'"
2007 " which is defined outside the program,"
2008 " perhaps a declaration mixup?"),
2009 input_bfd,
2010 input_section,
2011 cris_elf_howto_table[r_type].name,
2012 symname);
2013 bfd_set_error (bfd_error_bad_value);
2014 return FALSE;
2015 }
2016
2017 /* NULL if we had an error. */
2018 relocation -= elf_hash_table (info)->tls_sec == NULL
2019 ? 0
2020 : (elf_hash_table (info)->tls_sec->vma
2021 + elf_hash_table (info)->tls_size);
2022
2023 /* The TLS-relative offset is the relocation. */
2024 break;
2025
2026 default:
2027 BFD_FAIL ();
2028 return FALSE;
2029 }
2030
2031 r = cris_final_link_relocate (howto, input_bfd, input_section,
2032 contents, rel, relocation);
2033
2034 if (r != bfd_reloc_ok)
2035 {
2036 const char * msg = (const char *) NULL;
2037
2038 switch (r)
2039 {
2040 case bfd_reloc_overflow:
2041 r = info->callbacks->reloc_overflow
2042 (info, (h ? &h->root : NULL), symname, howto->name,
2043 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2044 if (additional_relocation_error_msg_count > 0)
2045 {
2046 additional_relocation_error_msg_count--;
2047 switch (r_type)
2048 {
2049 case R_CRIS_16_GOTPLT:
2050 case R_CRIS_16_GOT:
2051
2052 /* Not just TLS is involved here, so we make
2053 generation and message depend on -fPIC/-fpic
2054 only. */
2055 case R_CRIS_16_GOT_TPREL:
2056 case R_CRIS_16_GOT_GD:
2057 (*_bfd_error_handler)
2058 (_("(too many global variables for -fpic:"
2059 " recompile with -fPIC)"));
2060 break;
2061
2062 case R_CRIS_16_TPREL:
2063 case R_CRIS_16_DTPREL:
2064 (*_bfd_error_handler)
2065 (_("(thread-local data too big for -fpic or"
2066 " -msmall-tls: recompile with -fPIC or"
2067 " -mno-small-tls)"));
2068 break;
2069
2070 /* No known cause for overflow for other relocs. */
2071 default:
2072 break;
2073 }
2074 }
2075 break;
2076
2077 case bfd_reloc_undefined:
2078 r = info->callbacks->undefined_symbol
2079 (info, symname, input_bfd, input_section, rel->r_offset,
2080 TRUE);
2081 break;
2082
2083 case bfd_reloc_outofrange:
2084 msg = _("internal error: out of range error");
2085 break;
2086
2087 case bfd_reloc_notsupported:
2088 msg = _("internal error: unsupported relocation error");
2089 break;
2090
2091 case bfd_reloc_dangerous:
2092 msg = _("internal error: dangerous relocation");
2093 break;
2094
2095 default:
2096 msg = _("internal error: unknown error");
2097 break;
2098 }
2099
2100 if (msg)
2101 r = info->callbacks->warning
2102 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2103
2104 if (! r)
2105 return FALSE;
2106 }
2107 }
2108
2109 return TRUE;
2110 }
2111 \f
2112 /* Finish up dynamic symbol handling. We set the contents of various
2113 dynamic sections here. */
2114
2115 static bfd_boolean
2116 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2117 bfd *output_bfd;
2118 struct bfd_link_info *info;
2119 struct elf_link_hash_entry *h;
2120 Elf_Internal_Sym *sym;
2121 {
2122 bfd *dynobj;
2123
2124 /* Where in the plt entry to put values. */
2125 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2126
2127 /* What offset to add to the distance to the first PLT entry for the
2128 value at plt_off3. */
2129 int plt_off3_value_bias = 4;
2130
2131 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2132 for PIC and non-PIC for v32 and pre-v32). */
2133 int plt_stub_offset = 8;
2134 int plt_entry_size = PLT_ENTRY_SIZE;
2135 const bfd_byte *plt_entry = elf_cris_plt_entry;
2136 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2137
2138 /* Adjust the various PLT entry offsets. */
2139 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2140 {
2141 plt_off2 = 14;
2142 plt_off3 = 20;
2143 plt_off3_value_bias = -2;
2144 plt_stub_offset = 12;
2145 plt_entry_size = PLT_ENTRY_SIZE_V32;
2146 plt_entry = elf_cris_plt_entry_v32;
2147 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2148 }
2149
2150 dynobj = elf_hash_table (info)->dynobj;
2151
2152 if (h->plt.offset != (bfd_vma) -1)
2153 {
2154 asection *splt;
2155 asection *sgotplt;
2156 asection *sgot;
2157 asection *srela;
2158 bfd_vma got_base;
2159
2160 bfd_vma gotplt_offset
2161 = elf_cris_hash_entry (h)->gotplt_offset;
2162 Elf_Internal_Rela rela;
2163 bfd_byte *loc;
2164 bfd_boolean has_gotplt = gotplt_offset != 0;
2165
2166 /* Get the index in the .rela.plt relocations for the .got.plt
2167 entry that corresponds to this symbol.
2168 We have to count backwards here, and the result is only valid
2169 as an index into .rela.plt. We also have to undo the effect
2170 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2171 .got.plt) for which gotplt_offset is adjusted, because while
2172 that entry goes into .got.plt, its relocation goes into
2173 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2174 processed as part of the runtime lazy .rela.plt relocation).
2175 FIXME: There be literal constants here... */
2176 bfd_vma rela_plt_index
2177 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2178 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2179
2180 /* Get the offset into the .got table of the entry that corresponds
2181 to this function. Note that we embed knowledge that "incoming"
2182 .got goes after .got.plt in the output without padding (pointer
2183 aligned). However, that knowledge is present in several other
2184 places too. */
2185 bfd_vma got_offset
2186 = (has_gotplt
2187 ? gotplt_offset
2188 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2189
2190 /* This symbol has an entry in the procedure linkage table. Set it
2191 up. */
2192
2193 BFD_ASSERT (h->dynindx != -1);
2194
2195 splt = bfd_get_section_by_name (dynobj, ".plt");
2196 sgot = bfd_get_section_by_name (dynobj, ".got");
2197 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2198 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2199 BFD_ASSERT (splt != NULL && sgotplt != NULL
2200 && (! has_gotplt || srela != NULL));
2201
2202 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2203
2204 /* Fill in the entry in the procedure linkage table. */
2205 if (! info->shared)
2206 {
2207 memcpy (splt->contents + h->plt.offset, plt_entry,
2208 plt_entry_size);
2209
2210 /* We need to enter the absolute address of the GOT entry here. */
2211 bfd_put_32 (output_bfd, got_base + got_offset,
2212 splt->contents + h->plt.offset + plt_off1);
2213 }
2214 else
2215 {
2216 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2217 plt_entry_size);
2218 bfd_put_32 (output_bfd, got_offset,
2219 splt->contents + h->plt.offset + plt_off1);
2220 }
2221
2222 /* Fill in the plt entry and make a relocation, if this is a "real"
2223 PLT entry. */
2224 if (has_gotplt)
2225 {
2226 /* Fill in the offset to the reloc table. */
2227 bfd_put_32 (output_bfd,
2228 rela_plt_index * sizeof (Elf32_External_Rela),
2229 splt->contents + h->plt.offset + plt_off2);
2230
2231 /* Fill in the offset to the first PLT entry, where to "jump". */
2232 bfd_put_32 (output_bfd,
2233 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2234 splt->contents + h->plt.offset + plt_off3);
2235
2236 /* Fill in the entry in the global offset table with the address of
2237 the relocating stub. */
2238 bfd_put_32 (output_bfd,
2239 (splt->output_section->vma
2240 + splt->output_offset
2241 + h->plt.offset
2242 + plt_stub_offset),
2243 sgotplt->contents + got_offset);
2244
2245 /* Fill in the entry in the .rela.plt section. */
2246 rela.r_offset = (sgotplt->output_section->vma
2247 + sgotplt->output_offset
2248 + got_offset);
2249 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2250 rela.r_addend = 0;
2251 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2252 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2253 }
2254
2255 if (!h->def_regular)
2256 {
2257 /* Mark the symbol as undefined, rather than as defined in
2258 the .plt section. Leave the value alone. */
2259 sym->st_shndx = SHN_UNDEF;
2260
2261 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2262 know whether resetting the value is significant; if it really
2263 is, rather than a quirk or bug in the sparc port, then I
2264 believe we'd see this elsewhere. */
2265 /* If the symbol is weak, we do need to clear the value.
2266 Otherwise, the PLT entry would provide a definition for
2267 the symbol even if the symbol wasn't defined anywhere,
2268 and so the symbol would never be NULL. */
2269 if (!h->ref_regular_nonweak)
2270 sym->st_value = 0;
2271 }
2272 }
2273
2274 /* For an ordinary program, we emit .got relocs only for symbols that
2275 are in the dynamic-symbols table and are either defined by the
2276 program or are undefined weak symbols, or are function symbols
2277 where we do not output a PLT: the PLT reloc was output above and all
2278 references to the function symbol are redirected to the PLT. */
2279 if (h->got.offset != (bfd_vma) -1
2280 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2281 && (info->shared
2282 || (h->dynindx != -1
2283 && h->plt.offset == (bfd_vma) -1
2284 && !h->def_regular
2285 && h->root.type != bfd_link_hash_undefweak)))
2286 {
2287 asection *sgot;
2288 asection *srela;
2289 Elf_Internal_Rela rela;
2290 bfd_byte *loc;
2291 bfd_byte *where;
2292
2293 /* This symbol has an entry in the global offset table. Set it up. */
2294
2295 sgot = bfd_get_section_by_name (dynobj, ".got");
2296 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2297 BFD_ASSERT (sgot != NULL && srela != NULL);
2298
2299 rela.r_offset = (sgot->output_section->vma
2300 + sgot->output_offset
2301 + (h->got.offset &~ (bfd_vma) 1));
2302
2303 /* If this is a static link, or it is a -Bsymbolic link and the
2304 symbol is defined locally or was forced to be local because
2305 of a version file, we just want to emit a RELATIVE reloc.
2306 The entry in the global offset table will already have been
2307 initialized in the relocate_section function. */
2308 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2309 if (! elf_hash_table (info)->dynamic_sections_created
2310 || (info->shared
2311 && (info->symbolic || h->dynindx == -1)
2312 && h->def_regular))
2313 {
2314 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2315 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2316 }
2317 else
2318 {
2319 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2320 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2321 rela.r_addend = 0;
2322 }
2323
2324 loc = srela->contents;
2325 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2326 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2327 }
2328
2329 if (h->needs_copy)
2330 {
2331 asection *s;
2332 Elf_Internal_Rela rela;
2333 bfd_byte *loc;
2334
2335 /* This symbol needs a copy reloc. Set it up. */
2336
2337 BFD_ASSERT (h->dynindx != -1
2338 && (h->root.type == bfd_link_hash_defined
2339 || h->root.type == bfd_link_hash_defweak));
2340
2341 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2342 ".rela.bss");
2343 BFD_ASSERT (s != NULL);
2344
2345 rela.r_offset = (h->root.u.def.value
2346 + h->root.u.def.section->output_section->vma
2347 + h->root.u.def.section->output_offset);
2348 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2349 rela.r_addend = 0;
2350 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2351 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2352 }
2353
2354 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2355 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2356 || h == elf_hash_table (info)->hgot)
2357 sym->st_shndx = SHN_ABS;
2358
2359 return TRUE;
2360 }
2361 \f
2362 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2363 offsets were changed, as part of -z combreloc handling, from those we
2364 computed. */
2365
2366 static bfd_boolean
2367 elf_cris_finish_dynamic_sections (output_bfd, info)
2368 bfd *output_bfd;
2369 struct bfd_link_info *info;
2370 {
2371 bfd *dynobj;
2372 asection *sgot;
2373 asection *sdyn;
2374
2375 dynobj = elf_hash_table (info)->dynobj;
2376
2377 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2378 BFD_ASSERT (sgot != NULL);
2379 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2380
2381 if (elf_hash_table (info)->dynamic_sections_created)
2382 {
2383 asection *splt;
2384 Elf32_External_Dyn *dyncon, *dynconend;
2385
2386 splt = bfd_get_section_by_name (dynobj, ".plt");
2387 BFD_ASSERT (splt != NULL && sdyn != NULL);
2388
2389 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2390 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2391 for (; dyncon < dynconend; dyncon++)
2392 {
2393 Elf_Internal_Dyn dyn;
2394 asection *s;
2395
2396 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2397
2398 switch (dyn.d_tag)
2399 {
2400 default:
2401 break;
2402
2403 case DT_PLTGOT:
2404 s = bfd_get_section_by_name (output_bfd, ".got");
2405 BFD_ASSERT (s != NULL);
2406 dyn.d_un.d_ptr = s->vma;
2407 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2408 break;
2409
2410 case DT_JMPREL:
2411 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2412 if all symbols are found in the .got (not .got.plt). */
2413 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2414 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2416 break;
2417
2418 case DT_PLTRELSZ:
2419 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2420 if (s == NULL)
2421 dyn.d_un.d_val = 0;
2422 else
2423 dyn.d_un.d_val = s->size;
2424 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2425 break;
2426
2427 case DT_RELASZ:
2428 /* The procedure linkage table relocs (DT_JMPREL) should
2429 not be included in the overall relocs (DT_RELA).
2430 Therefore, we override the DT_RELASZ entry here to
2431 make it not include the JMPREL relocs. Since the
2432 linker script arranges for .rela.plt to follow all
2433 other relocation sections, we don't have to worry
2434 about changing the DT_RELA entry. */
2435 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2436 if (s != NULL)
2437 dyn.d_un.d_val -= s->size;
2438 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2439 break;
2440 }
2441 }
2442
2443 /* Fill in the first entry in the procedure linkage table. */
2444 if (splt->size > 0)
2445 {
2446 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2447 {
2448 if (info->shared)
2449 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2450 PLT_ENTRY_SIZE_V32);
2451 else
2452 {
2453 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2454 PLT_ENTRY_SIZE_V32);
2455 bfd_put_32 (output_bfd,
2456 sgot->output_section->vma
2457 + sgot->output_offset + 4,
2458 splt->contents + 4);
2459
2460 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2461 = PLT_ENTRY_SIZE_V32;
2462 }
2463 }
2464 else
2465 {
2466 if (info->shared)
2467 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2468 PLT_ENTRY_SIZE);
2469 else
2470 {
2471 memcpy (splt->contents, elf_cris_plt0_entry,
2472 PLT_ENTRY_SIZE);
2473 bfd_put_32 (output_bfd,
2474 sgot->output_section->vma
2475 + sgot->output_offset + 4,
2476 splt->contents + 6);
2477 bfd_put_32 (output_bfd,
2478 sgot->output_section->vma
2479 + sgot->output_offset + 8,
2480 splt->contents + 14);
2481
2482 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2483 = PLT_ENTRY_SIZE;
2484 }
2485 }
2486 }
2487 }
2488
2489 /* Fill in the first three entries in the global offset table. */
2490 if (sgot->size > 0)
2491 {
2492 if (sdyn == NULL)
2493 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2494 else
2495 bfd_put_32 (output_bfd,
2496 sdyn->output_section->vma + sdyn->output_offset,
2497 sgot->contents);
2498 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2499 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2500 }
2501
2502 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2503
2504 return TRUE;
2505 }
2506 \f
2507 /* Return the section that should be marked against GC for a given
2508 relocation. */
2509
2510 static asection *
2511 cris_elf_gc_mark_hook (asection *sec,
2512 struct bfd_link_info *info,
2513 Elf_Internal_Rela *rel,
2514 struct elf_link_hash_entry *h,
2515 Elf_Internal_Sym *sym)
2516 {
2517 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2518 if (h != NULL)
2519 switch (r_type)
2520 {
2521 case R_CRIS_GNU_VTINHERIT:
2522 case R_CRIS_GNU_VTENTRY:
2523 return NULL;
2524
2525 default:
2526 break;
2527 }
2528
2529 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2530 }
2531
2532 /* Update the got entry reference counts for the section being removed. */
2533
2534 static bfd_boolean
2535 cris_elf_gc_sweep_hook (bfd *abfd,
2536 struct bfd_link_info *info,
2537 asection *sec,
2538 const Elf_Internal_Rela *relocs)
2539 {
2540 Elf_Internal_Shdr *symtab_hdr;
2541 struct elf_link_hash_entry **sym_hashes;
2542 bfd_signed_vma *local_got_refcounts;
2543 const Elf_Internal_Rela *rel, *relend;
2544 bfd *dynobj;
2545 asection *sgot;
2546 asection *srelgot;
2547
2548 if (info->relocatable)
2549 return TRUE;
2550
2551 dynobj = elf_hash_table (info)->dynobj;
2552 if (dynobj == NULL)
2553 return TRUE;
2554
2555 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2556 sym_hashes = elf_sym_hashes (abfd);
2557 local_got_refcounts = elf_local_got_refcounts (abfd);
2558
2559 sgot = bfd_get_section_by_name (dynobj, ".got");
2560 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2561
2562 relend = relocs + sec->reloc_count;
2563 for (rel = relocs; rel < relend; rel++)
2564 {
2565 unsigned long r_symndx;
2566 struct elf_link_hash_entry *h = NULL;
2567 bfd_signed_vma got_element_size = 4;
2568 bfd_signed_vma *specific_refcount = NULL;
2569 enum elf_cris_reloc_type r_type;
2570
2571 r_symndx = ELF32_R_SYM (rel->r_info);
2572 if (r_symndx >= symtab_hdr->sh_info)
2573 {
2574 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2575 while (h->root.type == bfd_link_hash_indirect
2576 || h->root.type == bfd_link_hash_warning)
2577 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2578 }
2579
2580 r_type = ELF32_R_TYPE (rel->r_info);
2581 switch (r_type)
2582 {
2583 case R_CRIS_32_GOT:
2584 case R_CRIS_16_GOT:
2585 case R_CRIS_16_GOTPLT:
2586 case R_CRIS_32_GOTPLT:
2587 specific_refcount = h != NULL
2588 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2589 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2590 break;
2591
2592 case R_CRIS_32_GD:
2593 case R_CRIS_32_GOT_GD:
2594 case R_CRIS_16_GOT_GD:
2595 got_element_size = 8;
2596 specific_refcount = h != NULL
2597 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2598 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2599 break;
2600
2601 case R_CRIS_32_IE:
2602 case R_CRIS_16_GOT_TPREL:
2603 case R_CRIS_32_GOT_TPREL:
2604 specific_refcount = h != NULL
2605 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2606 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2607 break;
2608
2609 default:
2610 break;
2611 }
2612
2613 switch (r_type)
2614 {
2615 case R_CRIS_32_IE:
2616 case R_CRIS_32_GD:
2617 case R_CRIS_16_GOT_TPREL:
2618 case R_CRIS_32_GOT_TPREL:
2619 case R_CRIS_32_GOT_GD:
2620 case R_CRIS_16_GOT_GD:
2621 case R_CRIS_16_GOT:
2622 case R_CRIS_32_GOT:
2623 if (h != NULL)
2624 {
2625 /* If the counters are 0 when we got here, we've
2626 miscounted somehow somewhere, an internal error. */
2627 BFD_ASSERT (h->got.refcount > 0);
2628 --h->got.refcount;
2629
2630 BFD_ASSERT (*specific_refcount > 0);
2631 --*specific_refcount;
2632 if (*specific_refcount == 0)
2633 {
2634 /* We don't need the .got entry any more. */
2635 sgot->size -= got_element_size;
2636 srelgot->size -= sizeof (Elf32_External_Rela);
2637 }
2638 break;
2639 }
2640
2641 local_got_reloc:
2642 if (local_got_refcounts != NULL)
2643 {
2644 /* If the counters are 0 when we got here, we've
2645 miscounted somehow somewhere, an internal error. */
2646 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2647 --local_got_refcounts[r_symndx];
2648
2649 BFD_ASSERT (*specific_refcount > 0);
2650 --*specific_refcount;
2651 if (*specific_refcount == 0)
2652 {
2653 /* We don't need the .got entry any more. */
2654 sgot->size -= got_element_size;
2655 if (info->shared)
2656 srelgot->size -= sizeof (Elf32_External_Rela);
2657 }
2658 }
2659 break;
2660
2661 case R_CRIS_16_GOTPLT:
2662 case R_CRIS_32_GOTPLT:
2663 /* For local symbols, treat these like GOT relocs. */
2664 if (h == NULL)
2665 goto local_got_reloc;
2666 /* Fall through. */
2667
2668 case R_CRIS_32_PLT_GOTREL:
2669 /* FIXME: We don't garbage-collect away the .got section. */
2670 if (local_got_refcounts != NULL)
2671 local_got_refcounts[-1]--;
2672 /* Fall through. */
2673
2674 case R_CRIS_8_PCREL:
2675 case R_CRIS_16_PCREL:
2676 case R_CRIS_32_PCREL:
2677 case R_CRIS_32_PLT_PCREL:
2678 if (h != NULL)
2679 {
2680 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2681 && h->plt.refcount > 0)
2682 --h->plt.refcount;
2683 }
2684 break;
2685
2686 case R_CRIS_32_DTPREL:
2687 /* This'd be a .dtpreld entry in e.g. debug info. */
2688 if ((sec->flags & SEC_ALLOC) == 0)
2689 break;
2690 /* Fall through. */
2691 case R_CRIS_16_DTPREL:
2692 elf_cris_hash_table (info)->dtpmod_refcount--;
2693 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2694 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2695 BFD_ASSERT (local_got_refcounts != NULL);
2696 local_got_refcounts[-1]--;
2697 break;
2698
2699 default:
2700 break;
2701 }
2702 }
2703
2704 return TRUE;
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 (h, p)
2716 struct elf_cris_link_hash_entry *h;
2717 PTR p;
2718 {
2719 struct bfd_link_info *info = (struct bfd_link_info *) p;
2720
2721 if (h->root.root.type == bfd_link_hash_warning)
2722 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
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 bfd *dynobj = elf_hash_table (info)->dynobj;
2741 asection *sgot;
2742 asection *srelgot;
2743
2744 BFD_ASSERT (dynobj != NULL);
2745 sgot = bfd_get_section_by_name (dynobj, ".got");
2746 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2747
2748 /* Put accurate refcounts there. */
2749 h->root.got.refcount += h->gotplt_refcount;
2750 h->reg_got_refcount = h->gotplt_refcount;
2751
2752 h->gotplt_refcount = 0;
2753
2754 /* We always have a .got and a .rela.got section if there were
2755 GOTPLT relocs in input. */
2756 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2757
2758 /* Allocate space in the .got section. */
2759 sgot->size += 4;
2760
2761 /* Allocate relocation space. */
2762 srelgot->size += sizeof (Elf32_External_Rela);
2763 }
2764
2765 return TRUE;
2766 }
2767
2768 /* Try to fold PLT entries with GOT entries. There are two cases when we
2769 want to do this:
2770
2771 - When all PLT references are GOTPLT references, and there are GOT
2772 references, and this is not the executable. We don't have to
2773 generate a PLT at all.
2774
2775 - When there are both (ordinary) PLT references and GOT references,
2776 and this isn't the executable.
2777 We want to make the PLT reference use the ordinary GOT entry rather
2778 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2779 since the GOT entry will have to be resolved at startup anyway.
2780
2781 Though the latter case is handled when room for the PLT is allocated,
2782 not here.
2783
2784 By folding into the GOT, we may need a round-trip to a PLT in the
2785 executable for calls, a loss in performance. Still, losing a
2786 reloc is a win in size and at least in start-up time.
2787
2788 Note that this function is called before symbols are forced local by
2789 version scripts. The differing cases are handled by
2790 elf_cris_hide_symbol. */
2791
2792 static bfd_boolean
2793 elf_cris_try_fold_plt_to_got (h, p)
2794 struct elf_cris_link_hash_entry *h;
2795 PTR p;
2796 {
2797 struct bfd_link_info *info = (struct bfd_link_info *) p;
2798
2799 /* If there are no GOT references for this symbol, we can't fold any
2800 other reference so there's nothing to do. Likewise if there are no
2801 PLT references; GOTPLT references included. */
2802 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2803 return TRUE;
2804
2805 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2806 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2807
2808 if (h->gotplt_refcount == h->root.plt.refcount)
2809 {
2810 /* The only PLT references are GOTPLT references, and there are GOT
2811 references. Convert PLT to GOT references. */
2812 if (! elf_cris_adjust_gotplt_to_got (h, info))
2813 return FALSE;
2814
2815 /* Clear the PLT references, so no PLT will be created. */
2816 h->root.plt.offset = (bfd_vma) -1;
2817 }
2818
2819 return TRUE;
2820 }
2821
2822 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2823 to use a GOT entry (and create one) rather than requiring a GOTPLT
2824 entry. */
2825
2826 static void
2827 elf_cris_hide_symbol (info, h, force_local)
2828 struct bfd_link_info *info;
2829 struct elf_link_hash_entry *h;
2830 bfd_boolean force_local;
2831 {
2832 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2833
2834 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2835 }
2836
2837 /* Adjust a symbol defined by a dynamic object and referenced by a
2838 regular object. The current definition is in some section of the
2839 dynamic object, but we're not including those sections. We have to
2840 change the definition to something the rest of the link can
2841 understand. */
2842
2843 static bfd_boolean
2844 elf_cris_adjust_dynamic_symbol (info, h)
2845 struct bfd_link_info *info;
2846 struct elf_link_hash_entry *h;
2847 {
2848 bfd *dynobj;
2849 asection *s;
2850 bfd_size_type plt_entry_size;
2851
2852 dynobj = elf_hash_table (info)->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 (! info->shared
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 (info->shared
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 = bfd_get_section_by_name (dynobj, ".plt");
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 (!info->shared
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 (info->shared && 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 = elf_cris_hash_table (info)->next_gotplt_entry;
2977 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2978
2979 s = bfd_get_section_by_name (dynobj, ".got.plt");
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 = bfd_get_section_by_name (dynobj, ".rela.plt");
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 (info->shared)
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 if (h->size == 0)
3024 {
3025 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3026 h->root.root.string);
3027 return TRUE;
3028 }
3029
3030 /* We must allocate the symbol in our .dynbss section, which will
3031 become part of the .bss section of the executable. There will be
3032 an entry for this symbol in the .dynsym section. The dynamic
3033 object will contain position independent code, so all references
3034 from the dynamic object to this symbol will go through the global
3035 offset table. The dynamic linker will use the .dynsym entry to
3036 determine the address it must put in the global offset table, so
3037 both the dynamic object and the regular object will refer to the
3038 same memory location for the variable. */
3039
3040 s = bfd_get_section_by_name (dynobj, ".dynbss");
3041 BFD_ASSERT (s != NULL);
3042
3043 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3044 copy the initial value out of the dynamic object and into the
3045 runtime process image. We need to remember the offset into the
3046 .rela.bss section we are going to use. */
3047 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3048 {
3049 asection *srel;
3050
3051 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3052 BFD_ASSERT (srel != NULL);
3053 srel->size += sizeof (Elf32_External_Rela);
3054 h->needs_copy = 1;
3055 }
3056
3057 return _bfd_elf_adjust_dynamic_copy (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->pcrel_relocs_copied == NULL);
3082 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3083
3084 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3085 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3086 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3087 XMOVE (gotplt_refcount);
3088 XMOVE (gotplt_offset);
3089 XMOVE (reg_got_refcount);
3090 XMOVE (tprel_refcount);
3091 XMOVE (dtp_refcount);
3092 #undef XMOVE
3093 #undef XMOVOPZ
3094
3095 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3096 }
3097
3098 /* Look through the relocs for a section during the first phase. */
3099
3100 static bfd_boolean
3101 cris_elf_check_relocs (abfd, info, sec, relocs)
3102 bfd *abfd;
3103 struct bfd_link_info *info;
3104 asection *sec;
3105 const Elf_Internal_Rela *relocs;
3106 {
3107 bfd *dynobj;
3108 Elf_Internal_Shdr *symtab_hdr;
3109 struct elf_link_hash_entry **sym_hashes;
3110 bfd_signed_vma *local_got_refcounts;
3111 const Elf_Internal_Rela *rel;
3112 const Elf_Internal_Rela *rel_end;
3113 asection *sgot;
3114 asection *srelgot;
3115 asection *sreloc;
3116
3117 if (info->relocatable)
3118 return TRUE;
3119
3120 dynobj = elf_hash_table (info)->dynobj;
3121 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3122 sym_hashes = elf_sym_hashes (abfd);
3123 local_got_refcounts = elf_local_got_refcounts (abfd);
3124
3125 sgot = NULL;
3126 srelgot = NULL;
3127 sreloc = NULL;
3128
3129 rel_end = relocs + sec->reloc_count;
3130 for (rel = relocs; rel < rel_end; rel++)
3131 {
3132 struct elf_link_hash_entry *h;
3133 unsigned long r_symndx;
3134 enum elf_cris_reloc_type r_type;
3135 bfd_signed_vma got_element_size = 4;
3136 unsigned long r_symndx_lgot = INT_MAX;
3137
3138 r_symndx = ELF32_R_SYM (rel->r_info);
3139 if (r_symndx < symtab_hdr->sh_info)
3140 {
3141 h = NULL;
3142 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3143 }
3144 else
3145 {
3146 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3147 while (h->root.type == bfd_link_hash_indirect
3148 || h->root.type == bfd_link_hash_warning)
3149 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3150 }
3151
3152 r_type = ELF32_R_TYPE (rel->r_info);
3153
3154 /* Some relocs require linker-created sections; we need to hang them
3155 on the first input bfd we found that contained dynamic relocs. */
3156 switch (r_type)
3157 {
3158 case R_CRIS_32_DTPREL:
3159 if ((sec->flags & SEC_ALLOC) == 0)
3160 /* This'd be a .dtpreld entry in e.g. debug info. We have
3161 several different switch statements below, but none of
3162 that is needed; we need no preparations for resolving
3163 R_CRIS_32_DTPREL into a non-allocated section (debug
3164 info), so let's just move on to the next
3165 relocation. */
3166 continue;
3167 /* Fall through. */
3168 case R_CRIS_16_DTPREL:
3169 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3170 entry at index 3. */
3171 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3172 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3173 elf_cris_hash_table (info)->dtpmod_refcount++;
3174 /* Fall through. */
3175
3176 case R_CRIS_32_IE:
3177 case R_CRIS_32_GD:
3178 case R_CRIS_16_GOT_GD:
3179 case R_CRIS_32_GOT_GD:
3180 case R_CRIS_32_GOT_TPREL:
3181 case R_CRIS_16_GOT_TPREL:
3182 case R_CRIS_16_GOT:
3183 case R_CRIS_32_GOT:
3184 case R_CRIS_32_GOTREL:
3185 case R_CRIS_32_PLT_GOTREL:
3186 case R_CRIS_32_PLT_PCREL:
3187 case R_CRIS_16_GOTPLT:
3188 case R_CRIS_32_GOTPLT:
3189 if (dynobj == NULL)
3190 {
3191 elf_hash_table (info)->dynobj = dynobj = abfd;
3192
3193 /* We could handle this if we can get a handle on the
3194 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3195 that, we must insist on dynobj being a specific mach. */
3196 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3197 {
3198 (*_bfd_error_handler)
3199 (_("%B, section %A:\n v10/v32 compatible object %s"
3200 " must not contain a PIC relocation"),
3201 abfd, sec);
3202 return FALSE;
3203 }
3204
3205 /* Create the .got section, so we can assume it's always
3206 present whenever there's a dynobj. */
3207 if (!_bfd_elf_create_got_section (dynobj, info))
3208 return FALSE;
3209 }
3210
3211 if (sgot == NULL)
3212 sgot = bfd_get_section_by_name (dynobj, ".got");
3213
3214 if (local_got_refcounts == NULL)
3215 {
3216 bfd_size_type amt;
3217
3218 /* We use index local_got_refcounts[-1] to count all
3219 GOT-relative relocations that do not have explicit
3220 GOT entries. */
3221 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3222 amt *= sizeof (bfd_signed_vma);
3223 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3224 if (local_got_refcounts == NULL)
3225 return FALSE;
3226
3227 local_got_refcounts++;
3228 elf_local_got_refcounts (abfd) = local_got_refcounts;
3229 }
3230 break;
3231
3232 default:
3233 break;
3234 }
3235
3236 /* Some relocs require a global offset table (but perhaps not a
3237 specific GOT entry). */
3238 switch (r_type)
3239 {
3240 case R_CRIS_16_DTPREL:
3241 case R_CRIS_32_DTPREL:
3242 /* Not requesting .got.rela for an executable: the contents
3243 of the first entry is constant there. For a shared
3244 library, we need .got.rela for the R_CRIS_DTPMOD
3245 relocation at index 3. */
3246 if (!info->shared)
3247 break;
3248 /* Fall through. */
3249
3250 case R_CRIS_32_IE:
3251 case R_CRIS_32_GD:
3252 case R_CRIS_16_GOT_GD:
3253 case R_CRIS_32_GOT_GD:
3254 case R_CRIS_32_GOT_TPREL:
3255 case R_CRIS_16_GOT_TPREL:
3256 /* Fall through. */
3257
3258 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3259 entry only for local symbols. Unfortunately, we don't know
3260 until later on if there's a version script that forces the
3261 symbol local. We must have the .rela.got section in place
3262 before we know if the symbol looks global now, so we need
3263 to treat the reloc just like for R_CRIS_16_GOT and
3264 R_CRIS_32_GOT. */
3265 case R_CRIS_16_GOTPLT:
3266 case R_CRIS_32_GOTPLT:
3267 case R_CRIS_16_GOT:
3268 case R_CRIS_32_GOT:
3269 if (srelgot == NULL
3270 && (h != NULL || info->shared))
3271 {
3272 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3273 if (srelgot == NULL)
3274 {
3275 srelgot = bfd_make_section_with_flags (dynobj,
3276 ".rela.got",
3277 (SEC_ALLOC
3278 | SEC_LOAD
3279 | SEC_HAS_CONTENTS
3280 | SEC_IN_MEMORY
3281 | SEC_LINKER_CREATED
3282 | SEC_READONLY));
3283 if (srelgot == NULL
3284 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3285 return FALSE;
3286 }
3287 }
3288 break;
3289
3290 default:
3291 break;
3292 }
3293
3294 /* Warn and error for invalid input. */
3295 switch (r_type)
3296 {
3297 case R_CRIS_32_IE:
3298 case R_CRIS_32_TPREL:
3299 case R_CRIS_16_TPREL:
3300 case R_CRIS_32_GD:
3301 if (info->shared)
3302 {
3303 (*_bfd_error_handler)
3304 (_("%B, section %A:\n relocation %s not valid"
3305 " in a shared object;"
3306 " typically an option mixup, recompile with -fPIC"),
3307 abfd,
3308 sec,
3309 cris_elf_howto_table[r_type].name);
3310 /* Don't return FALSE here; we want messages for all of
3311 these and the error behavior is ungraceful
3312 anyway. */
3313 }
3314 default:
3315 break;
3316 }
3317
3318 switch (r_type)
3319 {
3320 case R_CRIS_32_GD:
3321 case R_CRIS_16_GOT_GD:
3322 case R_CRIS_32_GOT_GD:
3323 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3324 got_element_size = 8;
3325 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3326 break;
3327
3328 case R_CRIS_16_DTPREL:
3329 case R_CRIS_32_DTPREL:
3330 /* These two just request for the constant-index
3331 module-local tls_index-sized GOT entry, which we add
3332 elsewhere. */
3333 break;
3334
3335 case R_CRIS_32_IE:
3336 case R_CRIS_32_GOT_TPREL:
3337 case R_CRIS_16_GOT_TPREL:
3338 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3339
3340 /* Those relocs also require that a DSO is of type
3341 Initial Exec. Like other targets, we don't reset this
3342 flag even if the relocs are GC:ed away. */
3343 if (info->shared)
3344 info->flags |= DF_STATIC_TLS;
3345 break;
3346
3347 /* Let's list the other assembler-generated TLS-relocs too,
3348 just to show that they're not forgotten. */
3349 case R_CRIS_16_TPREL:
3350 case R_CRIS_32_TPREL:
3351 default:
3352 break;
3353 }
3354
3355 switch (r_type)
3356 {
3357 case R_CRIS_16_GOTPLT:
3358 case R_CRIS_32_GOTPLT:
3359 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3360 entry) is eliminated. We can only do this for a non-local
3361 symbol. */
3362 if (h != NULL)
3363 {
3364 elf_cris_hash_entry (h)->gotplt_refcount++;
3365 goto handle_gotplt_reloc;
3366 }
3367 /* If h is NULL then this is a local symbol, and we must make a
3368 GOT entry for it, so handle it like a GOT reloc. */
3369 /* Fall through. */
3370
3371 case R_CRIS_32_IE:
3372 case R_CRIS_32_GD:
3373 case R_CRIS_16_GOT_GD:
3374 case R_CRIS_32_GOT_GD:
3375 case R_CRIS_32_GOT_TPREL:
3376 case R_CRIS_16_GOT_TPREL:
3377 case R_CRIS_16_GOT:
3378 case R_CRIS_32_GOT:
3379 /* This symbol requires a global offset table entry. */
3380 if (h != NULL)
3381 {
3382 if (h->got.refcount == 0)
3383 {
3384 /* Make sure this symbol is output as a dynamic symbol. */
3385 if (h->dynindx == -1)
3386 {
3387 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3388 return FALSE;
3389 }
3390 }
3391
3392 /* Update the sum of reloc counts for this symbol. */
3393 h->got.refcount++;
3394
3395 switch (r_type)
3396 {
3397 case R_CRIS_16_GOT:
3398 case R_CRIS_32_GOT:
3399 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3400 {
3401 /* Allocate space in the .got section. */
3402 sgot->size += got_element_size;
3403 /* Allocate relocation space. */
3404 srelgot->size += sizeof (Elf32_External_Rela);
3405 }
3406 elf_cris_hash_entry (h)->reg_got_refcount++;
3407 break;
3408
3409 case R_CRIS_32_GD:
3410 case R_CRIS_16_GOT_GD:
3411 case R_CRIS_32_GOT_GD:
3412 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3413 {
3414 /* Allocate space in the .got section. */
3415 sgot->size += got_element_size;
3416 /* Allocate relocation space. */
3417 srelgot->size += sizeof (Elf32_External_Rela);
3418 }
3419 elf_cris_hash_entry (h)->dtp_refcount++;
3420 break;
3421
3422 case R_CRIS_32_IE:
3423 case R_CRIS_32_GOT_TPREL:
3424 case R_CRIS_16_GOT_TPREL:
3425 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3426 {
3427 /* Allocate space in the .got section. */
3428 sgot->size += got_element_size;
3429 /* Allocate relocation space. */
3430 srelgot->size += sizeof (Elf32_External_Rela);
3431 }
3432 elf_cris_hash_entry (h)->tprel_refcount++;
3433 break;
3434
3435 default:
3436 BFD_FAIL ();
3437 break;
3438 }
3439 }
3440 else
3441 {
3442 /* This is a global offset table entry for a local symbol. */
3443 if (local_got_refcounts[r_symndx_lgot] == 0)
3444 {
3445 sgot->size += got_element_size;
3446 if (info->shared)
3447 {
3448 /* If we are generating a shared object, we need
3449 to output a R_CRIS_RELATIVE reloc so that the
3450 dynamic linker can adjust this GOT entry.
3451 Similarly for non-regular got entries. */
3452 srelgot->size += sizeof (Elf32_External_Rela);
3453 }
3454 }
3455 /* Update the reloc-specific count. */
3456 local_got_refcounts[r_symndx_lgot]++;
3457
3458 /* This one is the sum of all the others. */
3459 local_got_refcounts[r_symndx]++;
3460 }
3461 break;
3462
3463 case R_CRIS_16_DTPREL:
3464 case R_CRIS_32_DTPREL:
3465 case R_CRIS_32_GOTREL:
3466 /* This reference requires a global offset table.
3467 FIXME: The actual refcount isn't used currently; the .got
3468 section can't be removed if there were any references in the
3469 input. */
3470 local_got_refcounts[-1]++;
3471 break;
3472
3473 handle_gotplt_reloc:
3474
3475 case R_CRIS_32_PLT_GOTREL:
3476 /* This reference requires a global offset table. */
3477 local_got_refcounts[-1]++;
3478 /* Fall through. */
3479
3480 case R_CRIS_32_PLT_PCREL:
3481 /* This symbol requires a procedure linkage table entry. We
3482 actually build the entry in adjust_dynamic_symbol,
3483 because this might be a case of linking PIC code which is
3484 never referenced by a dynamic object, in which case we
3485 don't need to generate a procedure linkage table entry
3486 after all. */
3487
3488 /* Beware: if we'd check for visibility of the symbol here
3489 (and not marking the need for a PLT when non-visible), we'd
3490 get into trouble with keeping handling consistent with
3491 regards to relocs found before definition and GOTPLT
3492 handling. Eliminable PLT entries will be dealt with later
3493 anyway. */
3494 if (h == NULL)
3495 continue;
3496
3497 h->needs_plt = 1;
3498 h->plt.refcount++;
3499 break;
3500
3501 case R_CRIS_8:
3502 case R_CRIS_16:
3503 case R_CRIS_32:
3504 /* Let's help debug shared library creation. Any of these
3505 relocs *can* be used in shared libs, but pages containing
3506 them cannot be shared, so they're not appropriate for
3507 common use. Don't warn for sections we don't care about,
3508 such as debug sections or non-constant sections. We
3509 can't help tables of (global) function pointers, for
3510 example, though they must be emitted in a (writable) data
3511 section to avoid having impure text sections. */
3512 if (info->shared
3513 && (sec->flags & SEC_ALLOC) != 0
3514 && (sec->flags & SEC_READONLY) != 0)
3515 {
3516 /* FIXME: How do we make this optionally a warning only? */
3517 (*_bfd_error_handler)
3518 (_("%B, section %A:\n relocation %s should not"
3519 " be used in a shared object; recompile with -fPIC"),
3520 abfd,
3521 sec,
3522 cris_elf_howto_table[r_type].name);
3523 }
3524 if (h != NULL)
3525 {
3526 h->non_got_ref = 1;
3527
3528 /* Make sure a plt entry is created for this symbol if it
3529 turns out to be a function defined by a dynamic object. */
3530 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3531 h->plt.refcount++;
3532 }
3533
3534 /* If we are creating a shared library and this is not a local
3535 symbol, we need to copy the reloc into the shared library.
3536 However when linking with -Bsymbolic and this is a global
3537 symbol which is defined in an object we are including in the
3538 link (i.e., DEF_REGULAR is set), then we can resolve the
3539 reloc directly. At this point we have not seen all the input
3540 files, so it is possible that DEF_REGULAR is not set now but
3541 will be set later (it is never cleared). In case of a weak
3542 definition, DEF_REGULAR may be cleared later by a strong
3543 definition in a shared library. We account for that
3544 possibility below by storing information in the relocs_copied
3545 field of the hash table entry. A similar situation occurs
3546 when creating shared libraries and symbol visibility changes
3547 render the symbol local. */
3548
3549 /* No need to do anything if we're not creating a shared object. */
3550 if (! info->shared)
3551 break;
3552
3553 /* We don't need to handle relocs into sections not going into
3554 the "real" output. */
3555 if ((sec->flags & SEC_ALLOC) == 0)
3556 break;
3557
3558 /* We may need to create a reloc section in the dynobj and made room
3559 for this reloc. */
3560 if (sreloc == NULL)
3561 {
3562 sreloc = _bfd_elf_make_dynamic_reloc_section
3563 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3564
3565 if (sreloc == NULL)
3566 return FALSE;
3567 }
3568
3569 if (sec->flags & SEC_READONLY)
3570 info->flags |= DF_TEXTREL;
3571
3572 sreloc->size += sizeof (Elf32_External_Rela);
3573 break;
3574
3575 case R_CRIS_8_PCREL:
3576 case R_CRIS_16_PCREL:
3577 case R_CRIS_32_PCREL:
3578 if (h != NULL)
3579 {
3580 h->non_got_ref = 1;
3581
3582 /* Make sure a plt entry is created for this symbol if it
3583 turns out to be a function defined by a dynamic object. */
3584 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3585 h->plt.refcount++;
3586 }
3587
3588 /* If we are creating a shared library and this is not a local
3589 symbol, we need to copy the reloc into the shared library.
3590 However when linking with -Bsymbolic and this is a global
3591 symbol which is defined in an object we are including in the
3592 link (i.e., DEF_REGULAR is set), then we can resolve the
3593 reloc directly. At this point we have not seen all the input
3594 files, so it is possible that DEF_REGULAR is not set now but
3595 will be set later (it is never cleared). In case of a weak
3596 definition, DEF_REGULAR may be cleared later by a strong
3597 definition in a shared library. We account for that
3598 possibility below by storing information in the relocs_copied
3599 field of the hash table entry. A similar situation occurs
3600 when creating shared libraries and symbol visibility changes
3601 render the symbol local. */
3602
3603 /* No need to do anything if we're not creating a shared object. */
3604 if (! info->shared)
3605 break;
3606
3607 /* We don't need to handle relocs into sections not going into
3608 the "real" output. */
3609 if ((sec->flags & SEC_ALLOC) == 0)
3610 break;
3611
3612 /* If the symbol is local, then we know already we can
3613 eliminate the reloc. */
3614 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3615 break;
3616
3617 /* If this is with -Bsymbolic and the symbol isn't weak, and
3618 is defined by an ordinary object (the ones we include in
3619 this shared library) then we can also eliminate the
3620 reloc. See comment above for more eliminable cases which
3621 we can't identify at this time. */
3622 if (info->symbolic
3623 && h->root.type != bfd_link_hash_defweak
3624 && h->def_regular)
3625 break;
3626
3627 /* We may need to create a reloc section in the dynobj and made room
3628 for this reloc. */
3629 if (sreloc == NULL)
3630 {
3631 sreloc = _bfd_elf_make_dynamic_reloc_section
3632 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3633
3634 if (sreloc == NULL)
3635 return FALSE;
3636 }
3637
3638 sreloc->size += sizeof (Elf32_External_Rela);
3639
3640 /* We count the number of PC relative relocations we have
3641 entered for this symbol, so that we can discard them
3642 again if the symbol is later defined by a regular object.
3643 We know that h is really a pointer to an
3644 elf_cris_link_hash_entry. */
3645 {
3646 struct elf_cris_link_hash_entry *eh;
3647 struct elf_cris_pcrel_relocs_copied *p;
3648
3649 eh = elf_cris_hash_entry (h);
3650
3651 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3652 if (p->section == sreloc)
3653 break;
3654
3655 if (p == NULL)
3656 {
3657 p = ((struct elf_cris_pcrel_relocs_copied *)
3658 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3659 if (p == NULL)
3660 return FALSE;
3661 p->next = eh->pcrel_relocs_copied;
3662 eh->pcrel_relocs_copied = p;
3663 p->section = sreloc;
3664 p->count = 0;
3665 p->r_type = r_type;
3666 }
3667
3668 ++p->count;
3669 }
3670 break;
3671
3672 /* This relocation describes the C++ object vtable hierarchy.
3673 Reconstruct it for later use during GC. */
3674 case R_CRIS_GNU_VTINHERIT:
3675 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3676 return FALSE;
3677 break;
3678
3679 /* This relocation describes which C++ vtable entries are actually
3680 used. Record for later use during GC. */
3681 case R_CRIS_GNU_VTENTRY:
3682 BFD_ASSERT (h != NULL);
3683 if (h != NULL
3684 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3685 return FALSE;
3686 break;
3687
3688 case R_CRIS_16_TPREL:
3689 case R_CRIS_32_TPREL:
3690 /* Already warned above, when necessary. */
3691 break;
3692
3693 default:
3694 /* Other relocs do not appear here. */
3695 bfd_set_error (bfd_error_bad_value);
3696 return FALSE;
3697 }
3698 }
3699
3700 return TRUE;
3701 }
3702
3703 /* Set the sizes of the dynamic sections. */
3704
3705 static bfd_boolean
3706 elf_cris_size_dynamic_sections (output_bfd, info)
3707 bfd *output_bfd ATTRIBUTE_UNUSED;
3708 struct bfd_link_info *info;
3709 {
3710 bfd *dynobj;
3711 asection *s;
3712 bfd_boolean plt;
3713 bfd_boolean relocs;
3714
3715 dynobj = elf_hash_table (info)->dynobj;
3716 BFD_ASSERT (dynobj != NULL);
3717
3718 if (elf_hash_table (info)->dynamic_sections_created)
3719 {
3720 /* Set the contents of the .interp section to the interpreter. */
3721 if (info->executable)
3722 {
3723 s = bfd_get_section_by_name (dynobj, ".interp");
3724 BFD_ASSERT (s != NULL);
3725 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3726 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3727 }
3728 }
3729 else
3730 {
3731 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3732 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3733 elf_cris_adjust_gotplt_to_got,
3734 (PTR) info);
3735
3736 /* We may have created entries in the .rela.got section.
3737 However, if we are not creating the dynamic sections, we will
3738 not actually use these entries. Reset the size of .rela.got,
3739 which will cause it to get stripped from the output file
3740 below. */
3741 s = bfd_get_section_by_name (dynobj, ".rela.got");
3742 if (s != NULL)
3743 s->size = 0;
3744 }
3745
3746 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3747 relative relocs against symbols defined in a regular object. We
3748 allocated space for them in the check_relocs routine, but we will not
3749 fill them in in the relocate_section routine. We also discard space
3750 for relocs that have become for local symbols due to symbol
3751 visibility changes. For programs, we discard space for relocs for
3752 symbols not referenced by any dynamic object. */
3753 if (info->shared)
3754 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3755 elf_cris_discard_excess_dso_dynamics,
3756 (PTR) info);
3757 else
3758 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3759 elf_cris_discard_excess_program_dynamics,
3760 (PTR) info);
3761
3762 /* The check_relocs and adjust_dynamic_symbol entry points have
3763 determined the sizes of the various dynamic sections. Allocate
3764 memory for them. */
3765 plt = FALSE;
3766 relocs = FALSE;
3767 for (s = dynobj->sections; s != NULL; s = s->next)
3768 {
3769 const char *name;
3770
3771 if ((s->flags & SEC_LINKER_CREATED) == 0)
3772 continue;
3773
3774 /* It's OK to base decisions on the section name, because none
3775 of the dynobj section names depend upon the input files. */
3776 name = bfd_get_section_name (dynobj, s);
3777
3778 if (strcmp (name, ".plt") == 0)
3779 {
3780 /* Remember whether there is a PLT. */
3781 plt = s->size != 0;
3782 }
3783 else if (strcmp (name, ".got.plt") == 0)
3784 {
3785 /* The .got.plt contains the .got header as well as the
3786 actual .got.plt contents. The .got header may contain a
3787 R_CRIS_DTPMOD entry at index 3. */
3788 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3789 ? 8 : 0;
3790 }
3791 else if (CONST_STRNEQ (name, ".rela"))
3792 {
3793 if (strcmp (name, ".rela.got") == 0
3794 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3795 && info->shared)
3796 s->size += sizeof (Elf32_External_Rela);
3797
3798 if (s->size != 0)
3799 {
3800 /* Remember whether there are any reloc sections other
3801 than .rela.plt. */
3802 if (strcmp (name, ".rela.plt") != 0)
3803 relocs = TRUE;
3804
3805 /* We use the reloc_count field as a counter if we need
3806 to copy relocs into the output file. */
3807 s->reloc_count = 0;
3808 }
3809 }
3810 else if (! CONST_STRNEQ (name, ".got")
3811 && strcmp (name, ".dynbss") != 0)
3812 {
3813 /* It's not one of our sections, so don't allocate space. */
3814 continue;
3815 }
3816
3817 if (s->size == 0)
3818 {
3819 /* If we don't need this section, strip it from the
3820 output file. This is mostly to handle .rela.bss and
3821 .rela.plt. We must create both sections in
3822 create_dynamic_sections, because they must be created
3823 before the linker maps input sections to output
3824 sections. The linker does that before
3825 adjust_dynamic_symbol is called, and it is that
3826 function which decides whether anything needs to go
3827 into these sections. */
3828 s->flags |= SEC_EXCLUDE;
3829 continue;
3830 }
3831
3832 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3833 continue;
3834
3835 /* Allocate memory for the section contents. We use bfd_zalloc here
3836 in case unused entries are not reclaimed before the section's
3837 contents are written out. This should not happen, but this way
3838 if it does, we will not write out garbage. For reloc sections,
3839 this will make entries have the type R_CRIS_NONE. */
3840 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3841 if (s->contents == NULL)
3842 return FALSE;
3843 }
3844
3845 if (elf_hash_table (info)->dynamic_sections_created)
3846 {
3847 /* Add some entries to the .dynamic section. We fill in the
3848 values later, in elf_cris_finish_dynamic_sections, but we
3849 must add the entries now so that we get the correct size for
3850 the .dynamic section. The DT_DEBUG entry is filled in by the
3851 dynamic linker and used by the debugger. */
3852 #define add_dynamic_entry(TAG, VAL) \
3853 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3854
3855 if (!info->shared)
3856 {
3857 if (!add_dynamic_entry (DT_DEBUG, 0))
3858 return FALSE;
3859 }
3860
3861 if (plt)
3862 {
3863 if (!add_dynamic_entry (DT_PLTGOT, 0)
3864 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3865 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3866 || !add_dynamic_entry (DT_JMPREL, 0))
3867 return FALSE;
3868 }
3869
3870 if (relocs)
3871 {
3872 if (!add_dynamic_entry (DT_RELA, 0)
3873 || !add_dynamic_entry (DT_RELASZ, 0)
3874 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3875 return FALSE;
3876 }
3877
3878 if ((info->flags & DF_TEXTREL) != 0)
3879 {
3880 if (!add_dynamic_entry (DT_TEXTREL, 0))
3881 return FALSE;
3882 info->flags |= DF_TEXTREL;
3883 }
3884 }
3885 #undef add_dynamic_entry
3886
3887 return TRUE;
3888 }
3889
3890 /* This function is called via elf_cris_link_hash_traverse if we are
3891 creating a shared object. In the -Bsymbolic case, it discards the
3892 space allocated to copy PC relative relocs against symbols which
3893 are defined in regular objects. For the normal non-symbolic case,
3894 we also discard space for relocs that have become local due to
3895 symbol visibility changes. We allocated space for them in the
3896 check_relocs routine, but we won't fill them in in the
3897 relocate_section routine. */
3898
3899 static bfd_boolean
3900 elf_cris_discard_excess_dso_dynamics (h, inf)
3901 struct elf_cris_link_hash_entry *h;
3902 PTR inf;
3903 {
3904 struct elf_cris_pcrel_relocs_copied *s;
3905 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3906
3907 if (h->root.root.type == bfd_link_hash_warning)
3908 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3909
3910 /* If a symbol has been forced local or we have found a regular
3911 definition for the symbolic link case, then we won't be needing
3912 any relocs. */
3913 if (h->root.def_regular
3914 && (h->root.forced_local
3915 || info->symbolic))
3916 {
3917 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3918 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3919
3920 return TRUE;
3921 }
3922
3923 /* If we have accounted for PC-relative relocs for read-only
3924 sections, now is the time to warn for them. We can't do it in
3925 cris_elf_check_relocs, because we don't know the status of all
3926 symbols at that time (and it's common to force symbols local
3927 late). */
3928
3929 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3930 {
3931 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3932
3933 /* FIXME: How do we make this optionally a warning only? */
3934 (*_bfd_error_handler)
3935 (_("%B, section `%A', to symbol `%s':\n"
3936 " relocation %s should not be used"
3937 " in a shared object; recompile with -fPIC"),
3938 s->section->owner,
3939 s->section,
3940 h->root.root.root.string,
3941 cris_elf_howto_table[s->r_type].name);
3942
3943 info->flags |= DF_TEXTREL;
3944 }
3945
3946 return TRUE;
3947 }
3948
3949 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3950 creating a shared object. We discard space for relocs for symbols put
3951 in the .got, but which we found we do not have to resolve at run-time. */
3952
3953 static bfd_boolean
3954 elf_cris_discard_excess_program_dynamics (h, inf)
3955 struct elf_cris_link_hash_entry *h;
3956 PTR inf;
3957 {
3958 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3959
3960 if (h->root.root.type == bfd_link_hash_warning)
3961 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3962
3963 /* If we're not creating a shared library and have a symbol which is
3964 referred to by .got references, but the symbol is defined locally,
3965 (or rather, not defined by a DSO) then lose the reloc for the .got
3966 (don't allocate room for it). Likewise for relocs for something
3967 for which we create a PLT. */
3968 if (!h->root.def_dynamic
3969 || h->root.plt.refcount > 0)
3970 {
3971 if (h->reg_got_refcount > 0
3972 /* The size of this section is only valid and in sync with the
3973 various reference counts if we do dynamic; don't decrement it
3974 otherwise. */
3975 && elf_hash_table (info)->dynamic_sections_created)
3976 {
3977 bfd *dynobj = elf_hash_table (info)->dynobj;
3978 asection *srelgot;
3979
3980 BFD_ASSERT (dynobj != NULL);
3981
3982 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3983
3984 BFD_ASSERT (srelgot != NULL);
3985
3986 srelgot->size -= sizeof (Elf32_External_Rela);
3987 }
3988
3989 /* If the locally-defined symbol isn't used by a DSO, then we don't
3990 have to export it as a dynamic symbol. This was already done for
3991 functions; doing this for all symbols would presumably not
3992 introduce new problems. Of course we don't do this if we're
3993 exporting all dynamic symbols. */
3994 if (! info->export_dynamic
3995 && h->root.dynindx != -1
3996 && !h->root.def_dynamic
3997 && !h->root.ref_dynamic)
3998 {
3999 h->root.dynindx = -1;
4000 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4001 h->root.dynstr_index);
4002 }
4003 }
4004
4005 return TRUE;
4006 }
4007
4008 /* Reject a file depending on presence and expectation of prefixed
4009 underscores on symbols. */
4010
4011 static bfd_boolean
4012 cris_elf_object_p (abfd)
4013 bfd *abfd;
4014 {
4015 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4016 return FALSE;
4017
4018 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4019 return (bfd_get_symbol_leading_char (abfd) == '_');
4020 else
4021 return (bfd_get_symbol_leading_char (abfd) == 0);
4022 }
4023
4024 /* Mark presence or absence of leading underscore. Set machine type
4025 flags from mach type. */
4026
4027 static void
4028 cris_elf_final_write_processing (abfd, linker)
4029 bfd *abfd;
4030 bfd_boolean linker ATTRIBUTE_UNUSED;
4031 {
4032 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4033
4034 e_flags &= ~EF_CRIS_UNDERSCORE;
4035 if (bfd_get_symbol_leading_char (abfd) == '_')
4036 e_flags |= EF_CRIS_UNDERSCORE;
4037
4038 switch (bfd_get_mach (abfd))
4039 {
4040 case bfd_mach_cris_v0_v10:
4041 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4042 break;
4043
4044 case bfd_mach_cris_v10_v32:
4045 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4046 break;
4047
4048 case bfd_mach_cris_v32:
4049 e_flags |= EF_CRIS_VARIANT_V32;
4050 break;
4051
4052 default:
4053 _bfd_abort (__FILE__, __LINE__,
4054 _("Unexpected machine number"));
4055 }
4056
4057 elf_elfheader (abfd)->e_flags = e_flags;
4058 }
4059
4060 /* Set the mach type from e_flags value. */
4061
4062 static bfd_boolean
4063 cris_elf_set_mach_from_flags (abfd, flags)
4064 bfd *abfd;
4065 unsigned long flags;
4066 {
4067 switch (flags & EF_CRIS_VARIANT_MASK)
4068 {
4069 case EF_CRIS_VARIANT_ANY_V0_V10:
4070 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4071 break;
4072
4073 case EF_CRIS_VARIANT_V32:
4074 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4075 break;
4076
4077 case EF_CRIS_VARIANT_COMMON_V10_V32:
4078 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4079 break;
4080
4081 default:
4082 /* Since we don't recognize them, we obviously can't support them
4083 with this code; we'd have to require that all future handling
4084 would be optional. */
4085 bfd_set_error (bfd_error_wrong_format);
4086 return FALSE;
4087 }
4088
4089 return TRUE;
4090 }
4091
4092 /* Display the flags field. */
4093
4094 static bfd_boolean
4095 cris_elf_print_private_bfd_data (abfd, ptr)
4096 bfd *abfd;
4097 PTR ptr;
4098 {
4099 FILE *file = (FILE *) ptr;
4100
4101 BFD_ASSERT (abfd != NULL && ptr != NULL);
4102
4103 _bfd_elf_print_private_bfd_data (abfd, ptr);
4104
4105 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4106
4107 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4108 fprintf (file, _(" [symbols have a _ prefix]"));
4109 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4110 == EF_CRIS_VARIANT_COMMON_V10_V32)
4111 fprintf (file, _(" [v10 and v32]"));
4112 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4113 == EF_CRIS_VARIANT_V32)
4114 fprintf (file, _(" [v32]"));
4115
4116 fputc ('\n', file);
4117 return TRUE;
4118 }
4119
4120 /* Don't mix files with and without a leading underscore. */
4121
4122 static bfd_boolean
4123 cris_elf_merge_private_bfd_data (ibfd, obfd)
4124 bfd *ibfd;
4125 bfd *obfd;
4126 {
4127 int imach, omach;
4128
4129 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4130 return FALSE;
4131
4132 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4133 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4134 return TRUE;
4135
4136 imach = bfd_get_mach (ibfd);
4137
4138 if (! elf_flags_init (obfd))
4139 {
4140 /* This happens when ld starts out with a 'blank' output file. */
4141 elf_flags_init (obfd) = TRUE;
4142
4143 /* We ignore the linker-set mach, and instead set it according to
4144 the first input file. This would also happen if we could
4145 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4146 This allows us to keep the same linker config across
4147 cris(v0..v10) and crisv32. The drawback is that we can't force
4148 the output type, which might be a sane thing to do for a
4149 v10+v32 compatibility object. */
4150 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4151 return FALSE;
4152 }
4153
4154 if (bfd_get_symbol_leading_char (ibfd)
4155 != bfd_get_symbol_leading_char (obfd))
4156 {
4157 (*_bfd_error_handler)
4158 (bfd_get_symbol_leading_char (ibfd) == '_'
4159 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4160 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4161 ibfd);
4162 bfd_set_error (bfd_error_bad_value);
4163 return FALSE;
4164 }
4165
4166 omach = bfd_get_mach (obfd);
4167
4168 if (imach != omach)
4169 {
4170 /* We can get an incompatible combination only if either is
4171 bfd_mach_cris_v32, and the other one isn't compatible. */
4172 if ((imach == bfd_mach_cris_v32
4173 && omach != bfd_mach_cris_v10_v32)
4174 || (omach == bfd_mach_cris_v32
4175 && imach != bfd_mach_cris_v10_v32))
4176 {
4177 (*_bfd_error_handler)
4178 ((imach == bfd_mach_cris_v32)
4179 ? _("%B contains CRIS v32 code, incompatible"
4180 " with previous objects")
4181 : _("%B contains non-CRIS-v32 code, incompatible"
4182 " with previous objects"),
4183 ibfd);
4184 bfd_set_error (bfd_error_bad_value);
4185 return FALSE;
4186 }
4187
4188 /* We don't have to check the case where the input is compatible
4189 with v10 and v32, because the output is already known to be set
4190 to the other (compatible) mach. */
4191 if (omach == bfd_mach_cris_v10_v32
4192 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4193 return FALSE;
4194 }
4195
4196 return TRUE;
4197 }
4198
4199 /* Do side-effects of e_flags copying to obfd. */
4200
4201 static bfd_boolean
4202 cris_elf_copy_private_bfd_data (ibfd, obfd)
4203 bfd *ibfd;
4204 bfd *obfd;
4205 {
4206 /* Call the base function. */
4207 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4208 return FALSE;
4209
4210 /* If output is big-endian for some obscure reason, stop here. */
4211 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4212 return FALSE;
4213
4214 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4215 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4216 return TRUE;
4217
4218 /* Do what we really came here for. */
4219 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4220 }
4221
4222 static enum elf_reloc_type_class
4223 elf_cris_reloc_type_class (rela)
4224 const Elf_Internal_Rela *rela;
4225 {
4226 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4227 switch (r_type)
4228 {
4229 case R_CRIS_RELATIVE:
4230 return reloc_class_relative;
4231 case R_CRIS_JUMP_SLOT:
4232 return reloc_class_plt;
4233 case R_CRIS_COPY:
4234 return reloc_class_copy;
4235 default:
4236 return reloc_class_normal;
4237 }
4238 }
4239
4240 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4241 two GOT entries from three types with two different sizes. We handle
4242 it as a single entry, so we can use the regular offset-calculation
4243 machinery. */
4244
4245 static bfd_vma
4246 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4247 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4248 struct elf_link_hash_entry *hr,
4249 bfd *ibfd,
4250 unsigned long symndx)
4251 {
4252 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4253 bfd_vma eltsiz = 0;
4254
4255 /* We may have one regular GOT entry or up to two TLS GOT
4256 entries. */
4257 if (h == NULL)
4258 {
4259 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4260 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4261
4262 BFD_ASSERT (local_got_refcounts != NULL);
4263
4264 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4265 {
4266 /* We can't have a variable referred to both as a regular
4267 variable and through TLS relocs. */
4268 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4269 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4270 return 4;
4271 }
4272
4273 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4274 eltsiz += 8;
4275
4276 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4277 eltsiz += 4;
4278 }
4279 else
4280 {
4281 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4282 if (hh->reg_got_refcount > 0)
4283 {
4284 /* The actual error-on-input is emitted elsewhere. */
4285 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4286 return 4;
4287 }
4288
4289 if (hh->dtp_refcount > 0)
4290 eltsiz += 8;
4291
4292 if (hh->tprel_refcount > 0)
4293 eltsiz += 4;
4294 }
4295
4296 /* We're only called when h->got.refcount is non-zero, so we must
4297 have a non-zero size. */
4298 BFD_ASSERT (eltsiz != 0);
4299 return eltsiz;
4300 }
4301 \f
4302 #define ELF_ARCH bfd_arch_cris
4303 #define ELF_MACHINE_CODE EM_CRIS
4304 #define ELF_MAXPAGESIZE 0x2000
4305
4306 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4307 #define TARGET_LITTLE_NAME "elf32-cris"
4308 #define elf_symbol_leading_char 0
4309
4310 #define elf_info_to_howto_rel NULL
4311 #define elf_info_to_howto cris_info_to_howto_rela
4312 #define elf_backend_relocate_section cris_elf_relocate_section
4313 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4314 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4315 #define elf_backend_check_relocs cris_elf_check_relocs
4316 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4317 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4318
4319 #define elf_backend_can_gc_sections 1
4320 #define elf_backend_can_refcount 1
4321
4322 #define elf_backend_object_p cris_elf_object_p
4323 #define elf_backend_final_write_processing \
4324 cris_elf_final_write_processing
4325 #define bfd_elf32_bfd_print_private_bfd_data \
4326 cris_elf_print_private_bfd_data
4327 #define bfd_elf32_bfd_merge_private_bfd_data \
4328 cris_elf_merge_private_bfd_data
4329 #define bfd_elf32_bfd_copy_private_bfd_data \
4330 cris_elf_copy_private_bfd_data
4331
4332 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4333 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4334
4335 #define bfd_elf32_bfd_link_hash_table_create \
4336 elf_cris_link_hash_table_create
4337 #define elf_backend_adjust_dynamic_symbol \
4338 elf_cris_adjust_dynamic_symbol
4339 #define elf_backend_copy_indirect_symbol \
4340 elf_cris_copy_indirect_symbol
4341 #define elf_backend_size_dynamic_sections \
4342 elf_cris_size_dynamic_sections
4343 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4344 #define elf_backend_finish_dynamic_symbol \
4345 elf_cris_finish_dynamic_symbol
4346 #define elf_backend_finish_dynamic_sections \
4347 elf_cris_finish_dynamic_sections
4348 #define elf_backend_create_dynamic_sections \
4349 _bfd_elf_create_dynamic_sections
4350 #define bfd_elf32_bfd_final_link \
4351 bfd_elf_gc_common_final_link
4352 #define elf_backend_hide_symbol elf_cris_hide_symbol
4353 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4354
4355 #define elf_backend_want_got_plt 1
4356 #define elf_backend_plt_readonly 1
4357 #define elf_backend_want_plt_sym 0
4358 #define elf_backend_got_header_size 12
4359 #define elf_backend_got_elt_size elf_cris_got_elt_size
4360
4361 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4362 linking and libraries (if it's a win of any significance). Until then,
4363 take the easy route. */
4364 #define elf_backend_may_use_rel_p 0
4365 #define elf_backend_may_use_rela_p 1
4366 #define elf_backend_rela_normal 1
4367
4368 #include "elf32-target.h"
4369
4370 #undef TARGET_LITTLE_SYM
4371 #undef TARGET_LITTLE_NAME
4372 #undef elf_symbol_leading_char
4373
4374 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4375 #define TARGET_LITTLE_NAME "elf32-us-cris"
4376 #define elf_symbol_leading_char '_'
4377 #undef elf32_bed
4378 #define elf32_bed elf32_us_cris_bed
4379
4380 #include "elf32-target.h"