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[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
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06c15ad7 1/* CRIS-specific support for 32-bit ELF.
3eb128b2
AM
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
06c15ad7
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4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
915e5146 6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
06c15ad7 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
06c15ad7 9
ae9a127f
NC
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 2 of the License, or
13 (at your option) any later version.
06c15ad7 14
ae9a127f
NC
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.
06c15ad7 19
ae9a127f
NC
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
3e110533 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
06c15ad7
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23
24#include "bfd.h"
25#include "sysdep.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
28#include "elf/cris.h"
29
30/* Forward declarations. */
31static reloc_howto_type * cris_reloc_type_lookup
32 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
33
a7c10850 34static void cris_info_to_howto_rela
947216bf 35 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
06c15ad7 36
bac23f82
HPN
37static bfd_reloc_status_type cris_elf_pcrel_reloc
38 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
39
b34976b6 40static bfd_boolean cris_elf_grok_prstatus
72209a1f
HPN
41 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
42
b34976b6 43static bfd_boolean cris_elf_grok_psinfo
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HPN
44 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
45
b34976b6 46static bfd_boolean cris_elf_relocate_section
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HPN
47 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
48 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
49
50static bfd_reloc_status_type cris_final_link_relocate
51 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
52 Elf_Internal_Rela *, bfd_vma));
53
b34976b6 54static bfd_boolean cris_elf_gc_sweep_hook
06c15ad7
HPN
55 PARAMS ((bfd *, struct bfd_link_info *, asection *,
56 const Elf_Internal_Rela *));
57
58static asection * cris_elf_gc_mark_hook
1e2f5b6e 59 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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HPN
60 struct elf_link_hash_entry *, Elf_Internal_Sym *));
61
b34976b6 62static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
4da81684 63
b34976b6 64static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
4da81684 65
bac23f82
HPN
66static bfd_boolean cris_elf_set_mach_from_flags
67 PARAMS ((bfd *, unsigned long int));
68
b34976b6 69static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
4da81684 70
b34976b6 71static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
bac23f82 72static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
4da81684 73
915e5146 74struct elf_cris_link_hash_entry;
b34976b6 75static bfd_boolean elf_cris_discard_excess_dso_dynamics
4d96d128 76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 77static bfd_boolean elf_cris_discard_excess_program_dynamics
915e5146 78 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 79static bfd_boolean elf_cris_adjust_gotplt_to_got
915e5146 80 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 81static bfd_boolean elf_cris_try_fold_plt_to_got
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HPN
82 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
83static struct bfd_hash_entry *elf_cris_link_hash_newfunc
84 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
85static struct bfd_link_hash_table *elf_cris_link_hash_table_create
86 PARAMS ((bfd *));
b34976b6 87static bfd_boolean elf_cris_adjust_dynamic_symbol
915e5146 88 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 89static bfd_boolean cris_elf_check_relocs
99c79b2e
AJ
90 PARAMS ((bfd *, struct bfd_link_info *, asection *,
91 const Elf_Internal_Rela *));
92
b34976b6 93static bfd_boolean elf_cris_size_dynamic_sections
915e5146 94 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 95static bfd_boolean elf_cris_finish_dynamic_symbol
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HPN
96 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
97 Elf_Internal_Sym *));
b34976b6 98static bfd_boolean elf_cris_finish_dynamic_sections
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99 PARAMS ((bfd *, struct bfd_link_info *));
100static void elf_cris_hide_symbol
b34976b6 101 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
99e4ae17 102static enum elf_reloc_type_class elf_cris_reloc_type_class
f51e552e 103 PARAMS ((const Elf_Internal_Rela *));
915e5146 104
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HPN
105static reloc_howto_type cris_elf_howto_table [] =
106{
107 /* This reloc does nothing. */
108 HOWTO (R_CRIS_NONE, /* type */
109 0, /* rightshift */
110 2, /* size (0 = byte, 1 = short, 2 = long) */
111 32, /* bitsize */
b34976b6 112 FALSE, /* pc_relative */
06c15ad7
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113 0, /* bitpos */
114 complain_overflow_bitfield, /* complain_on_overflow */
115 bfd_elf_generic_reloc, /* special_function */
116 "R_CRIS_NONE", /* name */
b34976b6 117 FALSE, /* partial_inplace */
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HPN
118 0, /* src_mask */
119 0, /* dst_mask */
b34976b6 120 FALSE), /* pcrel_offset */
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121
122 /* An 8 bit absolute relocation. */
123 HOWTO (R_CRIS_8, /* type */
124 0, /* rightshift */
125 0, /* size (0 = byte, 1 = short, 2 = long) */
126 8, /* bitsize */
b34976b6 127 FALSE, /* pc_relative */
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128 0, /* bitpos */
129 complain_overflow_bitfield, /* complain_on_overflow */
130 bfd_elf_generic_reloc, /* special_function */
131 "R_CRIS_8", /* name */
b34976b6 132 FALSE, /* partial_inplace */
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133 0x0000, /* src_mask */
134 0x00ff, /* dst_mask */
b34976b6 135 FALSE), /* pcrel_offset */
06c15ad7
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136
137 /* A 16 bit absolute relocation. */
138 HOWTO (R_CRIS_16, /* type */
139 0, /* rightshift */
140 1, /* size (0 = byte, 1 = short, 2 = long) */
141 16, /* bitsize */
b34976b6 142 FALSE, /* pc_relative */
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143 0, /* bitpos */
144 complain_overflow_bitfield, /* complain_on_overflow */
145 bfd_elf_generic_reloc, /* special_function */
146 "R_CRIS_16", /* name */
b34976b6 147 FALSE, /* partial_inplace */
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HPN
148 0x00000000, /* src_mask */
149 0x0000ffff, /* dst_mask */
b34976b6 150 FALSE), /* pcrel_offset */
06c15ad7
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151
152 /* A 32 bit absolute relocation. */
153 HOWTO (R_CRIS_32, /* type */
154 0, /* rightshift */
155 2, /* size (0 = byte, 1 = short, 2 = long) */
156 32, /* bitsize */
b34976b6 157 FALSE, /* pc_relative */
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HPN
158 0, /* bitpos */
159 complain_overflow_bitfield, /* complain_on_overflow */
160 bfd_elf_generic_reloc, /* special_function */
161 "R_CRIS_32", /* name */
b34976b6 162 FALSE, /* partial_inplace */
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HPN
163 0x00000000, /* src_mask */
164 0xffffffff, /* dst_mask */
b34976b6 165 FALSE), /* pcrel_offset */
06c15ad7 166
915e5146 167 /* An 8 bit PC-relative relocation. */
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HPN
168 HOWTO (R_CRIS_8_PCREL, /* type */
169 0, /* rightshift */
170 0, /* size (0 = byte, 1 = short, 2 = long) */
171 8, /* bitsize */
b34976b6 172 TRUE, /* pc_relative */
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173 0, /* bitpos */
174 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 175 cris_elf_pcrel_reloc, /* special_function */
06c15ad7 176 "R_CRIS_8_PCREL", /* name */
b34976b6 177 FALSE, /* partial_inplace */
06c15ad7
HPN
178 0x0000, /* src_mask */
179 0x00ff, /* dst_mask */
b34976b6 180 TRUE), /* pcrel_offset */
06c15ad7 181
915e5146 182 /* A 16 bit PC-relative relocation. */
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HPN
183 HOWTO (R_CRIS_16_PCREL, /* type */
184 0, /* rightshift */
185 1, /* size (0 = byte, 1 = short, 2 = long) */
186 16, /* bitsize */
b34976b6 187 TRUE, /* pc_relative */
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188 0, /* bitpos */
189 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 190 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 191 "R_CRIS_16_PCREL", /* name */
b34976b6 192 FALSE, /* partial_inplace */
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HPN
193 0x00000000, /* src_mask */
194 0x0000ffff, /* dst_mask */
b34976b6 195 TRUE), /* pcrel_offset */
06c15ad7 196
915e5146 197 /* A 32 bit PC-relative relocation. */
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HPN
198 HOWTO (R_CRIS_32_PCREL, /* type */
199 0, /* rightshift */
200 2, /* size (0 = byte, 1 = short, 2 = long) */
201 32, /* bitsize */
b34976b6 202 TRUE, /* pc_relative */
06c15ad7
HPN
203 0, /* bitpos */
204 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 205 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 206 "R_CRIS_32_PCREL", /* name */
b34976b6 207 FALSE, /* partial_inplace */
06c15ad7
HPN
208 0x00000000, /* src_mask */
209 0xffffffff, /* dst_mask */
b34976b6 210 TRUE), /* pcrel_offset */
06c15ad7 211
915e5146
HPN
212 /* GNU extension to record C++ vtable hierarchy. */
213 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
06c15ad7
HPN
214 0, /* rightshift */
215 2, /* size (0 = byte, 1 = short, 2 = long) */
216 0, /* bitsize */
b34976b6 217 FALSE, /* pc_relative */
06c15ad7
HPN
218 0, /* bitpos */
219 complain_overflow_dont, /* complain_on_overflow */
220 NULL, /* special_function */
221 "R_CRIS_GNU_VTINHERIT", /* name */
b34976b6 222 FALSE, /* partial_inplace */
06c15ad7
HPN
223 0, /* src_mask */
224 0, /* dst_mask */
b34976b6 225 FALSE), /* pcrel_offset */
06c15ad7 226
915e5146
HPN
227 /* GNU extension to record C++ vtable member usage. */
228 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
06c15ad7
HPN
229 0, /* rightshift */
230 2, /* size (0 = byte, 1 = short, 2 = long) */
231 0, /* bitsize */
b34976b6 232 FALSE, /* pc_relative */
06c15ad7
HPN
233 0, /* bitpos */
234 complain_overflow_dont, /* complain_on_overflow */
235 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
236 "R_CRIS_GNU_VTENTRY", /* name */
b34976b6 237 FALSE, /* partial_inplace */
06c15ad7
HPN
238 0, /* src_mask */
239 0, /* dst_mask */
b34976b6 240 FALSE), /* pcrel_offset */
915e5146
HPN
241
242 /* This is used only by the dynamic linker. The symbol should exist
243 both in the object being run and in some shared library. The
244 dynamic linker copies the data addressed by the symbol from the
245 shared library into the object, because the object being
246 run has to have the data at some particular address. */
247 HOWTO (R_CRIS_COPY, /* type */
248 0, /* rightshift */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
250 32, /* bitsize */
b34976b6 251 FALSE, /* pc_relative */
915e5146
HPN
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_CRIS_COPY", /* name */
b34976b6 256 FALSE, /* partial_inplace */
915e5146
HPN
257 0, /* src_mask */
258 0, /* dst_mask */
b34976b6 259 FALSE), /* pcrel_offset */
915e5146
HPN
260
261 /* Like R_CRIS_32, but used when setting global offset table entries. */
262 HOWTO (R_CRIS_GLOB_DAT, /* type */
263 0, /* rightshift */
264 2, /* size (0 = byte, 1 = short, 2 = long) */
265 32, /* bitsize */
b34976b6 266 FALSE, /* pc_relative */
915e5146
HPN
267 0, /* bitpos */
268 complain_overflow_bitfield, /* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_CRIS_GLOB_DAT", /* name */
b34976b6 271 FALSE, /* partial_inplace */
915e5146
HPN
272 0, /* src_mask */
273 0xffffffff, /* dst_mask */
b34976b6 274 FALSE), /* pcrel_offset */
915e5146
HPN
275
276 /* Marks a procedure linkage table entry for a symbol. */
277 HOWTO (R_CRIS_JUMP_SLOT, /* type */
278 0, /* rightshift */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
280 32, /* bitsize */
b34976b6 281 FALSE, /* pc_relative */
915e5146
HPN
282 0, /* bitpos */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_CRIS_JUMP_SLOT", /* name */
b34976b6 286 FALSE, /* partial_inplace */
915e5146
HPN
287 0, /* src_mask */
288 0, /* dst_mask */
b34976b6 289 FALSE), /* pcrel_offset */
915e5146
HPN
290
291 /* Used only by the dynamic linker. When the object is run, this
292 longword is set to the load address of the object, plus the
293 addend. */
294 HOWTO (R_CRIS_RELATIVE, /* type */
295 0, /* rightshift */
296 2, /* size (0 = byte, 1 = short, 2 = long) */
297 32, /* bitsize */
b34976b6 298 FALSE, /* pc_relative */
915e5146
HPN
299 0, /* bitpos */
300 complain_overflow_bitfield, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_CRIS_RELATIVE", /* name */
b34976b6 303 FALSE, /* partial_inplace */
915e5146
HPN
304 0, /* src_mask */
305 0xffffffff, /* dst_mask */
b34976b6 306 FALSE), /* pcrel_offset */
915e5146
HPN
307
308 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
309 HOWTO (R_CRIS_16_GOT, /* type */
310 0, /* rightshift */
311 1, /* size (0 = byte, 1 = short, 2 = long) */
312 16, /* bitsize */
b34976b6 313 FALSE, /* pc_relative */
915e5146
HPN
314 0, /* bitpos */
315 complain_overflow_bitfield, /* complain_on_overflow */
316 bfd_elf_generic_reloc, /* special_function */
317 "R_CRIS_16_GOT", /* name */
b34976b6 318 FALSE, /* partial_inplace */
915e5146
HPN
319 0, /* src_mask */
320 0xffff, /* dst_mask */
b34976b6 321 FALSE), /* pcrel_offset */
915e5146
HPN
322
323 HOWTO (R_CRIS_32_GOT, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
b34976b6 327 FALSE, /* pc_relative */
915e5146
HPN
328 0, /* bitpos */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_CRIS_32_GOT", /* name */
b34976b6 332 FALSE, /* partial_inplace */
915e5146
HPN
333 0, /* src_mask */
334 0xffffffff, /* dst_mask */
b34976b6 335 FALSE), /* pcrel_offset */
915e5146
HPN
336
337 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
338 the GOT table for the symbol. */
339 HOWTO (R_CRIS_16_GOTPLT, /* type */
340 0, /* rightshift */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
342 16, /* bitsize */
b34976b6 343 FALSE, /* pc_relative */
915e5146
HPN
344 0, /* bitpos */
345 complain_overflow_bitfield, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* special_function */
347 "R_CRIS_16_GOTPLT", /* name */
b34976b6 348 FALSE, /* partial_inplace */
915e5146
HPN
349 0, /* src_mask */
350 0xffff, /* dst_mask */
b34976b6 351 FALSE), /* pcrel_offset */
915e5146
HPN
352
353 HOWTO (R_CRIS_32_GOTPLT, /* type */
354 0, /* rightshift */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
356 32, /* bitsize */
b34976b6 357 FALSE, /* pc_relative */
915e5146
HPN
358 0, /* bitpos */
359 complain_overflow_bitfield, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_CRIS_32_GOTPLT", /* name */
b34976b6 362 FALSE, /* partial_inplace */
915e5146
HPN
363 0, /* src_mask */
364 0xffffffff, /* dst_mask */
b34976b6 365 FALSE), /* pcrel_offset */
915e5146
HPN
366
367 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
368 be necessary. */
369 HOWTO (R_CRIS_32_GOTREL, /* type */
370 0, /* rightshift */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
372 32, /* bitsize */
b34976b6 373 FALSE, /* pc_relative */
915e5146
HPN
374 0, /* bitpos */
375 complain_overflow_bitfield, /* complain_on_overflow */
376 bfd_elf_generic_reloc, /* special_function */
377 "R_CRIS_32_GOTREL", /* name */
b34976b6 378 FALSE, /* partial_inplace */
915e5146
HPN
379 0, /* src_mask */
380 0xffffffff, /* dst_mask */
b34976b6 381 FALSE), /* pcrel_offset */
915e5146
HPN
382
383 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
384 to create PLT entry for symbol. */
385 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
386 0, /* rightshift */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
388 32, /* bitsize */
b34976b6 389 FALSE, /* pc_relative */
915e5146
HPN
390 0, /* bitpos */
391 complain_overflow_bitfield, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_CRIS_32_PLT_GOTREL", /* name */
b34976b6 394 FALSE, /* partial_inplace */
915e5146
HPN
395 0, /* src_mask */
396 0xffffffff, /* dst_mask */
b34976b6 397 FALSE), /* pcrel_offset */
915e5146
HPN
398
399 /* A 32-bit offset from PC (location after the relocation) + addend to
400 entry for this symbol in PLT and request to create PLT entry for
401 symbol. */
402 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
403 0, /* rightshift */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
405 32, /* bitsize */
b34976b6 406 TRUE, /* pc_relative */
915e5146
HPN
407 0, /* bitpos */
408 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 409 cris_elf_pcrel_reloc, /* special_function */
915e5146 410 "R_CRIS_32_PLT_PCREL", /* name */
b34976b6 411 FALSE, /* partial_inplace */
915e5146
HPN
412 0, /* src_mask */
413 0xffffffff, /* dst_mask */
b34976b6 414 TRUE) /* pcrel_offset */
06c15ad7
HPN
415};
416\f
417/* Map BFD reloc types to CRIS ELF reloc types. */
418
419struct cris_reloc_map
420{
421 bfd_reloc_code_real_type bfd_reloc_val;
422 unsigned int cris_reloc_val;
423};
424
425static const struct cris_reloc_map cris_reloc_map [] =
426{
427 { BFD_RELOC_NONE, R_CRIS_NONE },
428 { BFD_RELOC_8, R_CRIS_8 },
429 { BFD_RELOC_16, R_CRIS_16 },
430 { BFD_RELOC_32, R_CRIS_32 },
431 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
432 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
433 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
434 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
915e5146
HPN
435 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
436 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
437 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
438 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
439 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
440 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
441 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
442 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
443 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
444 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
445 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
446 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }
06c15ad7
HPN
447};
448
449static reloc_howto_type *
450cris_reloc_type_lookup (abfd, code)
451 bfd * abfd ATTRIBUTE_UNUSED;
452 bfd_reloc_code_real_type code;
453{
908d94bf 454 unsigned int i;
06c15ad7 455
908d94bf 456 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
06c15ad7
HPN
457 if (cris_reloc_map [i].bfd_reloc_val == code)
458 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
a7c10850 459
06c15ad7
HPN
460 return NULL;
461}
462
463/* Set the howto pointer for an CRIS ELF reloc. */
464
465static void
466cris_info_to_howto_rela (abfd, cache_ptr, dst)
467 bfd * abfd ATTRIBUTE_UNUSED;
468 arelent * cache_ptr;
947216bf 469 Elf_Internal_Rela * dst;
06c15ad7
HPN
470{
471 unsigned int r_type;
472
473 r_type = ELF32_R_TYPE (dst->r_info);
474 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
475 cache_ptr->howto = & cris_elf_howto_table [r_type];
476}
bac23f82
HPN
477
478bfd_reloc_status_type
479cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
480 output_bfd, error_message)
481 bfd *abfd ATTRIBUTE_UNUSED;
482 arelent *reloc_entry;
483 asymbol *symbol;
484 PTR data ATTRIBUTE_UNUSED;
485 asection *input_section;
486 bfd *output_bfd;
487 char **error_message ATTRIBUTE_UNUSED;
488{
489 /* By default (using only bfd_elf_generic_reloc when linking to
490 non-ELF formats) PC-relative relocs are relative to the beginning
491 of the reloc. CRIS PC-relative relocs are relative to the position
492 *after* the reloc because that's what pre-CRISv32 PC points to
493 after reading an insn field with that reloc. (For CRISv32, PC is
494 actually relative to the start of the insn, but we keep the old
495 definition.) Still, we use as much generic machinery as we can.
496
497 Only adjust when doing a final link. */
498 if (output_bfd == (bfd *) NULL)
499 reloc_entry->addend -= 1 << reloc_entry->howto->size;
500
501 return
502 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
503 input_section, output_bfd, error_message);
504}
06c15ad7 505\f
bac23f82
HPN
506/* Support for core dump NOTE sections.
507 The slightly unintuitive code layout is an attempt to keep at least
508 some similarities with other ports, hoping to simplify general
509 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
72209a1f 510
b34976b6 511static bfd_boolean
72209a1f
HPN
512cris_elf_grok_prstatus (abfd, note)
513 bfd *abfd;
514 Elf_Internal_Note *note;
515{
516 int offset;
eea6121a 517 size_t size;
72209a1f 518
bac23f82
HPN
519 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
520 switch (note->descsz)
521 {
522 default:
523 return FALSE;
524
525 case 202: /* Linux/CRISv32 */
526 /* pr_cursig */
527 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
528
529 /* pr_pid */
530 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
531
532 /* pr_reg */
533 offset = 70;
534 size = 128;
535
536 break;
537 }
538 else
539 switch (note->descsz)
540 {
72209a1f 541 default:
b34976b6 542 return FALSE;
72209a1f 543
bc0d28ee 544 case 214: /* Linux/CRIS */
72209a1f
HPN
545 /* pr_cursig */
546 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
547
548 /* pr_pid */
549 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
550
551 /* pr_reg */
552 offset = 70;
eea6121a 553 size = 140;
72209a1f
HPN
554
555 break;
bac23f82 556 }
72209a1f
HPN
557
558 /* Make a ".reg/999" section. */
559 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 560 size, note->descpos + offset);
72209a1f
HPN
561}
562
b34976b6 563static bfd_boolean
72209a1f
HPN
564cris_elf_grok_psinfo (abfd, note)
565 bfd *abfd;
566 Elf_Internal_Note *note;
567{
bac23f82
HPN
568 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
569 switch (note->descsz)
570 {
571 default:
572 return FALSE;
573
574 case 124: /* Linux/CRISv32 elf_prpsinfo */
575 elf_tdata (abfd)->core_program
576 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
577 elf_tdata (abfd)->core_command
578 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
579 }
580 else
581 switch (note->descsz)
582 {
72209a1f 583 default:
b34976b6 584 return FALSE;
72209a1f
HPN
585
586 case 124: /* Linux/CRIS elf_prpsinfo */
587 elf_tdata (abfd)->core_program
bac23f82 588 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
72209a1f 589 elf_tdata (abfd)->core_command
bac23f82
HPN
590 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
591 }
72209a1f
HPN
592
593 /* Note that for some reason, a spurious space is tacked
594 onto the end of the args in some (at least one anyway)
595 implementations, so strip it off if it exists. */
596
597 {
598 char *command = elf_tdata (abfd)->core_command;
599 int n = strlen (command);
600
601 if (0 < n && command[n - 1] == ' ')
602 command[n - 1] = '\0';
603 }
604
b34976b6 605 return TRUE;
72209a1f
HPN
606}
607\f
915e5146
HPN
608/* The name of the dynamic interpreter. This is put in the .interp
609 section. */
610
611#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
612
613/* The size in bytes of an entry in the procedure linkage table. */
614
615#define PLT_ENTRY_SIZE 20
bac23f82 616#define PLT_ENTRY_SIZE_V32 26
915e5146
HPN
617
618/* The first entry in an absolute procedure linkage table looks like this. */
619
620static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
621{
622 0xfc, 0xe1,
cedb70c5 623 0x7e, 0x7e, /* push mof. */
915e5146
HPN
624 0x7f, 0x0d, /* (dip [pc+]) */
625 0, 0, 0, 0, /* Replaced with address of .got + 4. */
626 0x30, 0x7a, /* move [...],mof */
627 0x7f, 0x0d, /* (dip [pc+]) */
628 0, 0, 0, 0, /* Replaced with address of .got + 8. */
bac23f82
HPN
629 0x30, 0x09 /* jump [...] */
630};
631
632static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
633{
634 0x84, 0xe2, /* subq 4,$sp */
635 0x6f, 0xfe, /* move.d 0,$acr */
636 0, 0, 0, 0, /* Replaced by address of .got + 4. */
637 0x7e, 0x7a, /* move $mof,[$sp] */
638 0x3f, 0x7a, /* move [$acr],$mof */
639 0x04, 0xf2, /* addq 4,acr */
640 0x6f, 0xfa, /* move.d [$acr],$acr */
641 0xbf, 0x09, /* jump $acr */
642 0xb0, 0x05, /* nop */
643 0, 0 /* Pad out to 26 bytes. */
915e5146
HPN
644};
645
646/* Subsequent entries in an absolute procedure linkage table look like
647 this. */
648
649static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
650{
651 0x7f, 0x0d, /* (dip [pc+]) */
652 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
653 0x30, 0x09, /* jump [...] */
654 0x3f, 0x7e, /* move [pc+],mof */
655 0, 0, 0, 0, /* Replaced with offset into relocation table. */
656 0x2f, 0xfe, /* add.d [pc+],pc */
657 0xec, 0xff,
658 0xff, 0xff /* Replaced with offset to start of .plt. */
659};
660
bac23f82
HPN
661static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
662{
663 0x6f, 0xfe, /* move.d 0,$acr */
664 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
665 0x6f, 0xfa, /* move.d [$acr],$acr */
666 0xbf, 0x09, /* jump $acr */
667 0xb0, 0x05, /* nop */
668 0x3f, 0x7e, /* move 0,mof */
669 0, 0, 0, 0, /* Replaced with offset into relocation table. */
670 0xbf, 0x0e, /* ba start_of_plt0_entry */
671 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
672 0xb0, 0x05 /* nop */
673};
674
915e5146
HPN
675/* The first entry in a PIC procedure linkage table looks like this. */
676
677static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
678{
679 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
680 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
681 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
682 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
683};
684
bac23f82
HPN
685static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
686{
687 0x84, 0xe2, /* subq 4,$sp */
688 0x04, 0x01, /* addoq 4,$r0,$acr */
689 0x7e, 0x7a, /* move $mof,[$sp] */
690 0x3f, 0x7a, /* move [$acr],$mof */
691 0x04, 0xf2, /* addq 4,$acr */
692 0x6f, 0xfa, /* move.d [$acr],$acr */
693 0xbf, 0x09, /* jump $acr */
694 0xb0, 0x05, /* nop */
695 0, 0, /* Pad out to 26 bytes. */
696 0, 0, 0, 0,
697 0, 0, 0, 0
698};
699
915e5146
HPN
700/* Subsequent entries in a PIC procedure linkage table look like this. */
701
702static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
703{
704 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
705 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
710 0xec, 0xff, /* Replaced with offset to start of .plt. */
711 0xff, 0xff
712};
bac23f82
HPN
713
714static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
715{
716 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
717 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move relocoffs,$mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt */
724 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
725 0xb0, 0x05 /* nop */
726};
915e5146
HPN
727\f
728/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
729 (and most other PIC/shlib stuff). Check that we don't drift away
730 without reason.
731
732 The CRIS linker, like the m68k and i386 linkers (and probably the rest
733 too) needs to keep track of the number of relocs that it decides to
734 copy in check_relocs for each symbol. This is so that it can discard
735 PC relative relocs if it doesn't need them when linking with
736 -Bsymbolic. We store the information in a field extending the regular
737 ELF linker hash table. */
738
739/* This structure keeps track of the number of PC relative relocs we have
740 copied for a given symbol. */
741
742struct elf_cris_pcrel_relocs_copied
743{
744 /* Next section. */
745 struct elf_cris_pcrel_relocs_copied *next;
746 /* A section in dynobj. */
747 asection *section;
748 /* Number of relocs copied in this section. */
749 bfd_size_type count;
750};
751
752/* CRIS ELF linker hash entry. */
753
754struct elf_cris_link_hash_entry
755{
756 struct elf_link_hash_entry root;
757
758 /* Number of PC relative relocs copied for this symbol. */
759 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
760
761 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
762 both a general GOT and a PLT-specific GOT entry for the same symbol,
763 when it is referenced both as a function and as a function pointer.
764
765 Number of GOTPLT references for a function. */
766 bfd_signed_vma gotplt_refcount;
767
768 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
769 (zero is never used as an index). FIXME: We should be able to fold
770 this with gotplt_refcount in a union, like the got and plt unions in
771 elf_link_hash_entry. */
772 bfd_size_type gotplt_offset;
773};
774
775/* CRIS ELF linker hash table. */
776
777struct elf_cris_link_hash_table
778{
779 struct elf_link_hash_table root;
780
781 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
782 since we try and avoid creating GOTPLT:s when there's already a GOT.
783 Instead, we keep and update the next available index here. */
784 bfd_size_type next_gotplt_entry;
785};
786
787/* Traverse a CRIS ELF linker hash table. */
788
789#define elf_cris_link_hash_traverse(table, func, info) \
790 (elf_link_hash_traverse \
791 (&(table)->root, \
b34976b6 792 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
915e5146
HPN
793 (info)))
794
795/* Get the CRIS ELF linker hash table from a link_info structure. */
796
797#define elf_cris_hash_table(p) \
798 ((struct elf_cris_link_hash_table *) (p)->hash)
799
800/* Create an entry in a CRIS ELF linker hash table. */
801
802static struct bfd_hash_entry *
803elf_cris_link_hash_newfunc (entry, table, string)
804 struct bfd_hash_entry *entry;
805 struct bfd_hash_table *table;
806 const char *string;
807{
808 struct elf_cris_link_hash_entry *ret =
809 (struct elf_cris_link_hash_entry *) entry;
810
811 /* Allocate the structure if it has not already been allocated by a
812 subclass. */
813 if (ret == (struct elf_cris_link_hash_entry *) NULL)
814 ret = ((struct elf_cris_link_hash_entry *)
815 bfd_hash_allocate (table,
816 sizeof (struct elf_cris_link_hash_entry)));
817 if (ret == (struct elf_cris_link_hash_entry *) NULL)
818 return (struct bfd_hash_entry *) ret;
819
820 /* Call the allocation method of the superclass. */
821 ret = ((struct elf_cris_link_hash_entry *)
822 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
823 table, string));
824 if (ret != (struct elf_cris_link_hash_entry *) NULL)
825 {
826 ret->pcrel_relocs_copied = NULL;
827 ret->gotplt_refcount = 0;
828 ret->gotplt_offset = 0;
829 }
830
831 return (struct bfd_hash_entry *) ret;
832}
833
834/* Create a CRIS ELF linker hash table. */
835
836static struct bfd_link_hash_table *
837elf_cris_link_hash_table_create (abfd)
838 bfd *abfd;
839{
840 struct elf_cris_link_hash_table *ret;
dc810e39 841 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
915e5146 842
e2d34d7d 843 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
915e5146
HPN
844 if (ret == (struct elf_cris_link_hash_table *) NULL)
845 return NULL;
846
847 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
848 elf_cris_link_hash_newfunc))
849 {
e2d34d7d 850 free (ret);
915e5146
HPN
851 return NULL;
852 }
853
854 /* Initialize to skip over the first three entries in the gotplt; they
855 are used for run-time symbol evaluation. */
856 ret->next_gotplt_entry = 12;
857
858 return &ret->root.root;
859}
860\f
06c15ad7 861/* Perform a single relocation. By default we use the standard BFD
915e5146 862 routines, with a few tweaks. */
06c15ad7
HPN
863
864static bfd_reloc_status_type
865cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
866 relocation)
867 reloc_howto_type * howto;
868 bfd * input_bfd;
869 asection * input_section;
870 bfd_byte * contents;
871 Elf_Internal_Rela * rel;
872 bfd_vma relocation;
873{
915e5146
HPN
874 bfd_reloc_status_type r;
875
876 /* PC-relative relocations are relative to the position *after*
877 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
878 not a single byte, since PC must be 16-bit-aligned. */
879 switch (ELF32_R_TYPE (rel->r_info))
880 {
881 /* Check that the 16-bit GOT relocs are positive. */
882 case R_CRIS_16_GOTPLT:
883 case R_CRIS_16_GOT:
884 if ((bfd_signed_vma) relocation < 0)
885 return bfd_reloc_overflow;
886 break;
887
888 case R_CRIS_32_PLT_PCREL:
889 case R_CRIS_32_PCREL:
890 relocation -= 2;
891 /* Fall through. */
892 case R_CRIS_8_PCREL:
893 case R_CRIS_16_PCREL:
894 relocation -= 2;
895 break;
896
897 default:
898 break;
899 }
900
901 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
06c15ad7
HPN
902 contents, rel->r_offset,
903 relocation, rel->r_addend);
904 return r;
905}
906\f
907/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
908 copied, for further comments. */
909
b34976b6 910static bfd_boolean
06c15ad7
HPN
911cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
912 contents, relocs, local_syms, local_sections)
b34976b6
AM
913 bfd *output_bfd ATTRIBUTE_UNUSED;
914 struct bfd_link_info *info;
915 bfd *input_bfd;
916 asection *input_section;
917 bfd_byte *contents;
918 Elf_Internal_Rela *relocs;
919 Elf_Internal_Sym *local_syms;
920 asection **local_sections;
06c15ad7 921{
915e5146 922 bfd *dynobj;
b34976b6
AM
923 Elf_Internal_Shdr *symtab_hdr;
924 struct elf_link_hash_entry **sym_hashes;
915e5146
HPN
925 bfd_vma *local_got_offsets;
926 asection *sgot;
927 asection *splt;
928 asection *sreloc;
b34976b6
AM
929 Elf_Internal_Rela *rel;
930 Elf_Internal_Rela *relend;
06c15ad7 931
1049f94e 932 if (info->relocatable)
b34976b6 933 return TRUE;
f0fe0e16 934
915e5146
HPN
935 dynobj = elf_hash_table (info)->dynobj;
936 local_got_offsets = elf_local_got_offsets (input_bfd);
06c15ad7
HPN
937 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
938 sym_hashes = elf_sym_hashes (input_bfd);
939 relend = relocs + input_section->reloc_count;
940
915e5146
HPN
941 sgot = NULL;
942 splt = NULL;
943 sreloc = NULL;
944
945 if (dynobj != NULL)
946 {
947 splt = bfd_get_section_by_name (dynobj, ".plt");
948 sgot = bfd_get_section_by_name (dynobj, ".got");
949 }
950
06c15ad7
HPN
951 for (rel = relocs; rel < relend; rel ++)
952 {
b34976b6
AM
953 reloc_howto_type *howto;
954 unsigned long r_symndx;
955 Elf_Internal_Sym *sym;
956 asection *sec;
957 struct elf_link_hash_entry *h;
958 bfd_vma relocation;
959 bfd_reloc_status_type r;
960 const char *symname = NULL;
961 int r_type;
a7c10850 962
06c15ad7 963 r_type = ELF32_R_TYPE (rel->r_info);
a7c10850 964
06c15ad7
HPN
965 if ( r_type == R_CRIS_GNU_VTINHERIT
966 || r_type == R_CRIS_GNU_VTENTRY)
967 continue;
a7c10850 968
06c15ad7 969 /* This is a final link. */
f0fe0e16 970 r_symndx = ELF32_R_SYM (rel->r_info);
915e5146 971 howto = cris_elf_howto_table + r_type;
06c15ad7
HPN
972 h = NULL;
973 sym = NULL;
974 sec = NULL;
a7c10850 975
06c15ad7
HPN
976 if (r_symndx < symtab_hdr->sh_info)
977 {
978 sym = local_syms + r_symndx;
979 sec = local_sections [r_symndx];
8517fae7 980 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a7c10850 981
dc810e39
AM
982 symname = (bfd_elf_string_from_elf_section
983 (input_bfd, symtab_hdr->sh_link, sym->st_name));
984 if (symname == NULL)
985 symname = bfd_section_name (input_bfd, sec);
06c15ad7
HPN
986 }
987 else
988 {
560e09e9
NC
989 bfd_boolean warned;
990 bfd_boolean unresolved_reloc;
0a4787a0 991
b2a8e766
AM
992 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
993 r_symndx, symtab_hdr, sym_hashes,
994 h, sec, relocation,
995 unresolved_reloc, warned);
915e5146 996
560e09e9 997 if (unresolved_reloc
915e5146
HPN
998 /* Perhaps we should detect the cases that
999 sec->output_section is expected to be NULL like i386 and
1000 m68k, but apparently (and according to elfxx-ia64.c) all
1001 valid cases are where the symbol is defined in a shared
1002 object which we link dynamically against. This includes
1003 PLT relocs for which we've created a PLT entry and other
1004 relocs for which we're prepared to create dynamic
1005 relocations.
1006
1007 For now, new situations cause us to just err when
1008 sec->output_offset is NULL but the object with the symbol
1009 is *not* dynamically linked against. Thus this will
1010 automatically remind us so we can see if there are other
1011 valid cases we need to revisit. */
560e09e9
NC
1012 && (sec->owner->flags & DYNAMIC) != 0)
1013 relocation = 0;
1014
1015 else if (h->root.type == bfd_link_hash_defined
1016 || h->root.type == bfd_link_hash_defweak)
1017 {
1018 /* Here follow the cases where the relocation value must
1019 be zero (or when further handling is simplified when
1020 zero). I can't claim to understand the various
1021 conditions and they weren't described in the files
1022 where I copied them from (elf32-m68k.c and
1023 elf32-i386.c), but let's mention examples of where
1024 they happen. FIXME: Perhaps define and use a
1025 dynamic_symbol_p function like ia64.
1026
1027 - When creating a shared library, we can have an
1028 ordinary relocation for a symbol defined in a shared
1029 library (perhaps the one we create). We then make
1030 the relocation value zero, as the value seen now will
1031 be added into the relocation addend in this shared
1032 library, but must be handled only at dynamic-link
1033 time. FIXME: Not sure this example covers the
1034 h->elf_link_hash_flags test, though it's there in
1035 other targets. */
1036 if (info->shared
1037 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1038 || !h->def_regular)
560e09e9
NC
1039 && (input_section->flags & SEC_ALLOC) != 0
1040 && (r_type == R_CRIS_8
1041 || r_type == R_CRIS_16
1042 || r_type == R_CRIS_32
1043 || r_type == R_CRIS_8_PCREL
1044 || r_type == R_CRIS_16_PCREL
1045 || r_type == R_CRIS_32_PCREL))
915e5146 1046 relocation = 0;
560e09e9 1047 else if (unresolved_reloc)
915e5146 1048 {
560e09e9 1049 _bfd_error_handler
bac23f82 1050 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
d003868e
AM
1051 input_bfd,
1052 input_section,
8f615d07 1053 cris_elf_howto_table[r_type].name,
d003868e 1054 symname);
915e5146 1055 bfd_set_error (bfd_error_bad_value);
b34976b6 1056 return FALSE;
915e5146 1057 }
06c15ad7 1058 }
06c15ad7 1059 }
a7c10850 1060
915e5146 1061 switch (r_type)
06c15ad7 1062 {
915e5146
HPN
1063 case R_CRIS_16_GOTPLT:
1064 case R_CRIS_32_GOTPLT:
1065 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1066 but we require a PLT, and the PLT handling will take care of
1067 filling in the PLT-specific GOT entry. For the GOT offset,
1068 calculate it as we do when filling it in for the .got.plt
1069 section. If we don't have a PLT, punt to GOT handling. */
1070 if (h != NULL
1071 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
06c15ad7 1072 {
915e5146
HPN
1073 asection *sgotplt
1074 = bfd_get_section_by_name (dynobj, ".got.plt");
1075 bfd_vma got_offset;
a7c10850 1076
915e5146
HPN
1077 BFD_ASSERT (h->dynindx != -1);
1078 BFD_ASSERT (sgotplt != NULL);
a7c10850 1079
915e5146
HPN
1080 got_offset
1081 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
06c15ad7 1082
915e5146 1083 relocation = got_offset;
06c15ad7 1084 break;
915e5146 1085 }
06c15ad7 1086
4d96d128 1087 /* We didn't make a PLT entry for this symbol. Maybe everything is
915e5146
HPN
1088 folded into the GOT. Other than folding, this happens when
1089 statically linking PIC code, or when using -Bsymbolic. Check
1090 that we instead have a GOT entry as done for us by
1091 elf_cris_adjust_dynamic_symbol, and drop through into the
e4a2175c
HPN
1092 ordinary GOT cases. This must not happen for the
1093 executable, because any reference it does to a function
1094 that is satisfied by a DSO must generate a PLT. We assume
1095 these call-specific relocs don't address non-functions. */
1096 if (h != NULL
1097 && (h->got.offset == (bfd_vma) -1
1098 || (!info->shared
f5385ebf
AM
1099 && !(h->def_regular
1100 || (!h->def_dynamic
1101 && h->root.type == bfd_link_hash_undefweak)))))
915e5146
HPN
1102 {
1103 (*_bfd_error_handler)
e4a2175c 1104 ((h->got.offset == (bfd_vma) -1)
bac23f82 1105 ? _("%B, section %A: No PLT nor GOT for relocation %s"
d003868e 1106 " against symbol `%s'")
bac23f82 1107 : _("%B, section %A: No PLT for relocation %s"
d003868e
AM
1108 " against symbol `%s'"),
1109 input_bfd,
1110 input_section,
915e5146 1111 cris_elf_howto_table[r_type].name,
ada1953e
HPN
1112 (symname != NULL && symname[0] != '\0'
1113 ? symname : _("[whose name is lost]")));
915e5146
HPN
1114
1115 /* FIXME: Perhaps blaming input is not the right thing to
1116 do; this is probably an internal error. But it is true
1117 that we didn't like that particular input. */
1118 bfd_set_error (bfd_error_bad_value);
b34976b6 1119 return FALSE;
915e5146
HPN
1120 }
1121 /* Fall through. */
1122
1123 /* The size of the actual relocation is not used here; we only
1124 fill in the GOT table here. */
1125 case R_CRIS_16_GOT:
1126 case R_CRIS_32_GOT:
1127 {
1128 bfd_vma off;
1129
1130 /* Note that despite using RELA relocations, the .got contents
1131 is always filled in with the link-relative relocation
1132 value; the addend. */
1133
1134 if (h != NULL)
1135 {
1136 off = h->got.offset;
1137 BFD_ASSERT (off != (bfd_vma) -1);
1138
1139 if (!elf_hash_table (info)->dynamic_sections_created
205cfeb0 1140 || (! info->shared
f5385ebf 1141 && (h->def_regular
e4a2175c 1142 || h->type == STT_FUNC
f5385ebf 1143 || h->needs_plt))
915e5146
HPN
1144 || (info->shared
1145 && (info->symbolic || h->dynindx == -1)
f5385ebf 1146 && h->def_regular))
915e5146 1147 {
4d96d128 1148 /* This wasn't checked above for ! info->shared, but
e4a2175c
HPN
1149 must hold there if we get here; the symbol must
1150 be defined in the regular program or be undefweak
1151 or be a function or otherwise need a PLT. */
6849c52f
HPN
1152 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1153 || info->shared
f5385ebf 1154 || h->def_regular
e4a2175c 1155 || h->type == STT_FUNC
f5385ebf 1156 || h->needs_plt
6849c52f 1157 || h->root.type == bfd_link_hash_undefweak);
4d96d128 1158
915e5146 1159 /* This is actually a static link, or it is a
6849c52f
HPN
1160 -Bsymbolic link and the symbol is defined locally,
1161 or is undefweak, or the symbol was forced to be
1162 local because of a version file, or we're not
1163 creating a dynamic object. We must initialize this
1164 entry in the global offset table. Since the offset
1165 must always be a multiple of 4, we use the least
1166 significant bit to record whether we have
1167 initialized it already.
1168
1169 If this GOT entry should be runtime-initialized, we
1170 will create a .rela.got relocation entry to
1171 initialize the value. This is done in the
1172 finish_dynamic_symbol routine. */
915e5146
HPN
1173 if ((off & 1) != 0)
1174 off &= ~1;
1175 else
1176 {
1177 bfd_put_32 (output_bfd, relocation,
1178 sgot->contents + off);
1179 h->got.offset |= 1;
1180 }
1181 }
1182 }
1183 else
1184 {
1185 BFD_ASSERT (local_got_offsets != NULL
1186 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1187
1188 off = local_got_offsets[r_symndx];
1189
1190 /* The offset must always be a multiple of 4. We use
1191 the least significant bit to record whether we have
1192 already generated the necessary reloc. */
1193 if ((off & 1) != 0)
1194 off &= ~1;
1195 else
1196 {
1197 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1198
1199 if (info->shared)
1200 {
947216bf 1201 asection *s;
915e5146 1202 Elf_Internal_Rela outrel;
947216bf 1203 bfd_byte *loc;
915e5146 1204
947216bf
AM
1205 s = bfd_get_section_by_name (dynobj, ".rela.got");
1206 BFD_ASSERT (s != NULL);
915e5146
HPN
1207
1208 outrel.r_offset = (sgot->output_section->vma
1209 + sgot->output_offset
1210 + off);
1211 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1212 outrel.r_addend = relocation;
947216bf
AM
1213 loc = s->contents;
1214 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1215 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1216 }
1217
1218 local_got_offsets[r_symndx] |= 1;
1219 }
1220 }
1221
1222 relocation = sgot->output_offset + off;
1223 if (rel->r_addend != 0)
1224 {
1225 /* We can't do anything for a relocation which is against
1226 a symbol *plus offset*. GOT holds relocations for
1227 symbols. Make this an error; the compiler isn't
1228 allowed to pass us these kinds of things. */
1229 if (h == NULL)
1230 (*_bfd_error_handler)
bac23f82 1231 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1232 " against local symbol"),
1233 input_bfd,
1234 input_section,
915e5146 1235 cris_elf_howto_table[r_type].name,
d003868e 1236 rel->r_addend);
915e5146
HPN
1237 else
1238 (*_bfd_error_handler)
bac23f82 1239 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1240 " against symbol `%s'"),
1241 input_bfd,
1242 input_section,
915e5146
HPN
1243 cris_elf_howto_table[r_type].name,
1244 rel->r_addend,
d003868e 1245 symname[0] != '\0' ? symname : _("[whose name is lost]"));
915e5146
HPN
1246
1247 bfd_set_error (bfd_error_bad_value);
b34976b6 1248 return FALSE;
915e5146
HPN
1249 }
1250 }
1251 break;
06c15ad7 1252
915e5146 1253 case R_CRIS_32_GOTREL:
3dab95d3
HPN
1254 /* This relocation must only be performed against local symbols.
1255 It's also ok when we link a program and the symbol is either
1256 defined in an ordinary (non-DSO) object or is undefined weak. */
1257 if (h != NULL
1258 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1259 && !(!info->shared
f5385ebf
AM
1260 && (h->def_regular
1261 || (!h->def_dynamic
3dab95d3 1262 && h->root.type == bfd_link_hash_undefweak))))
915e5146
HPN
1263 {
1264 (*_bfd_error_handler)
bac23f82
HPN
1265 (_("%B, section %A: relocation %s is"
1266 " not allowed for global symbol: `%s'"),
d003868e
AM
1267 input_bfd,
1268 input_section,
915e5146 1269 cris_elf_howto_table[r_type].name,
d003868e 1270 symname);
915e5146 1271 bfd_set_error (bfd_error_bad_value);
b34976b6 1272 return FALSE;
06c15ad7
HPN
1273 }
1274
58255df3
HPN
1275 /* This can happen if we get a link error with the input ELF
1276 variant mismatching the output variant. Emit an error so
1277 it's noticed if it happens elsewhere. */
1278 if (sgot == NULL)
1279 {
1280 (*_bfd_error_handler)
bac23f82 1281 (_("%B, section %A: relocation %s with no GOT created"),
d003868e
AM
1282 input_bfd,
1283 input_section,
1284 cris_elf_howto_table[r_type].name);
58255df3 1285 bfd_set_error (bfd_error_bad_value);
b34976b6 1286 return FALSE;
58255df3
HPN
1287 }
1288
915e5146
HPN
1289 /* This relocation is like a PC-relative one, except the
1290 reference point is the location of GOT. Note that
1291 sgot->output_offset is not involved in this calculation. We
1292 always want the start of entire .got section, not the
1293 position after the reserved header. */
1294 relocation -= sgot->output_section->vma;
1295 break;
06c15ad7 1296
915e5146
HPN
1297 case R_CRIS_32_PLT_PCREL:
1298 /* Relocation is to the entry for this symbol in the
1299 procedure linkage table. */
06c15ad7 1300
915e5146
HPN
1301 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1302 without using the procedure linkage table. */
0a4787a0 1303 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1304 break;
1305
1306 if (h->plt.offset == (bfd_vma) -1
1307 || splt == NULL)
1308 {
1309 /* We didn't make a PLT entry for this symbol. This
1310 happens when statically linking PIC code, or when
1311 using -Bsymbolic. */
1312 break;
1313 }
1314
1315 relocation = (splt->output_section->vma
1316 + splt->output_offset
1317 + h->plt.offset);
1318 break;
1319
1320 case R_CRIS_32_PLT_GOTREL:
1321 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1322 start of the .got section. See also comment at
1323 R_CRIS_32_GOT. */
1324 relocation -= sgot->output_section->vma;
1325
1326 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1327 without using the procedure linkage table. */
0a4787a0 1328 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1329 break;
1330
1331 if (h->plt.offset == (bfd_vma) -1
1332 || splt == NULL)
1333 {
1334 /* We didn't make a PLT entry for this symbol. This
1335 happens when statically linking PIC code, or when
1336 using -Bsymbolic. */
1337 break;
1338 }
1339
1340 relocation = (splt->output_section->vma
1341 + splt->output_offset
1342 + h->plt.offset
1343 - sgot->output_section->vma);
1344 break;
1345
1346 case R_CRIS_8_PCREL:
1347 case R_CRIS_16_PCREL:
1348 case R_CRIS_32_PCREL:
1349 /* If the symbol was local, we need no shlib-specific handling. */
0a4787a0 1350 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1351 break;
1352
1353 /* Fall through. */
1354 case R_CRIS_8:
1355 case R_CRIS_16:
1356 case R_CRIS_32:
1357 if (info->shared
ec338859 1358 && r_symndx != 0
915e5146
HPN
1359 && (input_section->flags & SEC_ALLOC) != 0
1360 && ((r_type != R_CRIS_8_PCREL
1361 && r_type != R_CRIS_16_PCREL
1362 && r_type != R_CRIS_32_PCREL)
1363 || (!info->symbolic
f5385ebf 1364 || !h->def_regular)))
915e5146
HPN
1365 {
1366 Elf_Internal_Rela outrel;
947216bf 1367 bfd_byte *loc;
b34976b6 1368 bfd_boolean skip, relocate;
915e5146
HPN
1369
1370 /* When generating a shared object, these relocations
1371 are copied into the output file to be resolved at run
1372 time. */
1373
1374 if (sreloc == NULL)
1375 {
1376 const char *name;
1377
1378 name = (bfd_elf_string_from_elf_section
1379 (input_bfd,
1380 elf_elfheader (input_bfd)->e_shstrndx,
1381 elf_section_data (input_section)->rel_hdr.sh_name));
1382 if (name == NULL)
b34976b6 1383 return FALSE;
915e5146
HPN
1384
1385 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1386 && strcmp (bfd_get_section_name (input_bfd,
1387 input_section),
1388 name + 5) == 0);
1389
1390 sreloc = bfd_get_section_by_name (dynobj, name);
1391
1392 /* That section should have been created in
1393 cris_elf_check_relocs, but that function will not be
1394 called for objects which fail in
1395 cris_elf_merge_private_bfd_data. */
1396 if (sreloc == NULL)
1397 {
1398 (*_bfd_error_handler)
d003868e
AM
1399 (_("%B: Internal inconsistency; no relocation section %s"),
1400 input_bfd,
915e5146
HPN
1401 name);
1402
1403 bfd_set_error (bfd_error_bad_value);
b34976b6 1404 return FALSE;
915e5146
HPN
1405 }
1406 }
1407
b34976b6
AM
1408 skip = FALSE;
1409 relocate = FALSE;
915e5146 1410
c629eae0
JJ
1411 outrel.r_offset =
1412 _bfd_elf_section_offset (output_bfd, info, input_section,
1413 rel->r_offset);
1414 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 1415 skip = TRUE;
0bb2d96a 1416 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 1417 skip = TRUE, relocate = TRUE;
915e5146
HPN
1418 outrel.r_offset += (input_section->output_section->vma
1419 + input_section->output_offset);
1420
1421 if (skip)
0bb2d96a 1422 memset (&outrel, 0, sizeof outrel);
915e5146
HPN
1423 /* h->dynindx may be -1 if the symbol was marked to
1424 become local. */
1425 else if (h != NULL
1426 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1427 || !h->def_regular))
915e5146
HPN
1428 {
1429 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN
1430 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1431 outrel.r_addend = relocation + rel->r_addend;
1432 }
1433 else
1434 {
1435 if (r_type == R_CRIS_32)
1436 {
b34976b6 1437 relocate = TRUE;
915e5146
HPN
1438 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1439 outrel.r_addend = relocation + rel->r_addend;
1440 }
1441 else
1442 {
1443 long indx;
1444
8517fae7 1445 if (bfd_is_abs_section (sec))
915e5146
HPN
1446 indx = 0;
1447 else if (sec == NULL || sec->owner == NULL)
1448 {
1449 bfd_set_error (bfd_error_bad_value);
b34976b6 1450 return FALSE;
915e5146
HPN
1451 }
1452 else
1453 {
1454 asection *osec;
1455
1456 osec = sec->output_section;
1457 indx = elf_section_data (osec)->dynindx;
1458 BFD_ASSERT (indx > 0);
1459 }
1460
915e5146
HPN
1461 outrel.r_info = ELF32_R_INFO (indx, r_type);
1462 outrel.r_addend = relocation + rel->r_addend;
1463 }
1464 }
1465
947216bf
AM
1466 loc = sreloc->contents;
1467 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1468 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1469
1470 /* This reloc will be computed at runtime, so there's no
1471 need to do anything now, except for R_CRIS_32 relocations
1472 that have been turned into R_CRIS_RELATIVE. */
1473 if (!relocate)
1474 continue;
1475 }
1476
1477 break;
1478 }
1479
1480 r = cris_final_link_relocate (howto, input_bfd, input_section,
1481 contents, rel, relocation);
1482
1483 if (r != bfd_reloc_ok)
1484 {
1485 const char * msg = (const char *) NULL;
1486
1487 switch (r)
1488 {
1489 case bfd_reloc_overflow:
1490 r = info->callbacks->reloc_overflow
dfeffb9f
L
1491 (info, (h ? &h->root : NULL), symname, howto->name,
1492 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
915e5146
HPN
1493 break;
1494
1495 case bfd_reloc_undefined:
1496 r = info->callbacks->undefined_symbol
dc810e39 1497 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 1498 TRUE);
915e5146
HPN
1499 break;
1500
1501 case bfd_reloc_outofrange:
1502 msg = _("internal error: out of range error");
1503 break;
1504
1505 case bfd_reloc_notsupported:
1506 msg = _("internal error: unsupported relocation error");
1507 break;
1508
1509 case bfd_reloc_dangerous:
1510 msg = _("internal error: dangerous relocation");
1511 break;
1512
1513 default:
1514 msg = _("internal error: unknown error");
1515 break;
1516 }
1517
1518 if (msg)
1519 r = info->callbacks->warning
dc810e39 1520 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN
1521
1522 if (! r)
b34976b6 1523 return FALSE;
915e5146
HPN
1524 }
1525 }
1526
b34976b6 1527 return TRUE;
915e5146
HPN
1528}
1529\f
1530/* Finish up dynamic symbol handling. We set the contents of various
1531 dynamic sections here. */
1532
b34976b6 1533static bfd_boolean
915e5146
HPN
1534elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
1535 bfd *output_bfd;
1536 struct bfd_link_info *info;
1537 struct elf_link_hash_entry *h;
1538 Elf_Internal_Sym *sym;
1539{
1540 bfd *dynobj;
bac23f82
HPN
1541
1542 /* Where in the plt entry to put values. */
915e5146
HPN
1543 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
1544
bac23f82
HPN
1545 /* What offset to add to the distance to the first PLT entry for the
1546 value at plt_off3. */
1547 int plt_off3_value_bias = 4;
1548
1549 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
1550 for PIC and non-PIC for v32 and pre-v32). */
1551 int plt_stub_offset = 8;
1552 int plt_entry_size = PLT_ENTRY_SIZE;
1553 const bfd_byte *plt_entry = elf_cris_plt_entry;
1554 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
1555
1556 /* Adjust the various PLT entry offsets. */
1557 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1558 {
1559 plt_off2 = 14;
1560 plt_off3 = 20;
1561 plt_off3_value_bias = -2;
1562 plt_stub_offset = 12;
1563 plt_entry_size = PLT_ENTRY_SIZE_V32;
1564 plt_entry = elf_cris_plt_entry_v32;
1565 plt_pic_entry = elf_cris_pic_plt_entry_v32;
1566 }
1567
915e5146
HPN
1568 dynobj = elf_hash_table (info)->dynobj;
1569
1570 if (h->plt.offset != (bfd_vma) -1)
1571 {
1572 asection *splt;
1573 asection *sgotplt;
1574 asection *sgot;
1575 asection *srela;
1576 bfd_vma got_base;
1577
1578 bfd_vma gotplt_offset
1579 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1580 Elf_Internal_Rela rela;
947216bf 1581 bfd_byte *loc;
b34976b6 1582 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146
HPN
1583
1584 /* Get the index in the procedure linkage table which
1585 corresponds to this symbol. This is the index of this symbol
1586 in all the symbols for which we are making plt entries. The
1587 first entry in the procedure linkage table is reserved. */
1588 /* We have to count backwards here, and the result is only valid as
1589 an index into .got.plt and its relocations. FIXME: Constants... */
1590 bfd_vma gotplt_index = gotplt_offset/4 - 3;
1591
1592 /* Get the offset into the .got table of the entry that corresponds
1593 to this function. Note that we embed knowledge that "incoming"
1594 .got goes after .got.plt in the output without padding (pointer
1595 aligned). However, that knowledge is present in several other
c152c796 1596 places too. */
915e5146
HPN
1597 bfd_vma got_offset
1598 = (has_gotplt
1599 ? gotplt_offset
1600 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
1601
1602 /* This symbol has an entry in the procedure linkage table. Set it
1603 up. */
1604
1605 BFD_ASSERT (h->dynindx != -1);
1606
1607 splt = bfd_get_section_by_name (dynobj, ".plt");
1608 sgot = bfd_get_section_by_name (dynobj, ".got");
1609 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1610 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1611 BFD_ASSERT (splt != NULL && sgotplt != NULL
1612 && (! has_gotplt || srela != NULL));
1613
1614 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
1615
1616 /* Fill in the entry in the procedure linkage table. */
1617 if (! info->shared)
1618 {
bac23f82
HPN
1619 memcpy (splt->contents + h->plt.offset, plt_entry,
1620 plt_entry_size);
915e5146
HPN
1621
1622 /* We need to enter the absolute address of the GOT entry here. */
1623 bfd_put_32 (output_bfd, got_base + got_offset,
1624 splt->contents + h->plt.offset + plt_off1);
1625 }
1626 else
1627 {
bac23f82
HPN
1628 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
1629 plt_entry_size);
915e5146
HPN
1630 bfd_put_32 (output_bfd, got_offset,
1631 splt->contents + h->plt.offset + plt_off1);
1632 }
1633
1634 /* Fill in the plt entry and make a relocation, if this is a "real"
1635 PLT entry. */
1636 if (has_gotplt)
1637 {
bac23f82 1638 /* Fill in the offset to the reloc table. */
915e5146
HPN
1639 bfd_put_32 (output_bfd,
1640 gotplt_index * sizeof (Elf32_External_Rela),
1641 splt->contents + h->plt.offset + plt_off2);
1642
1643 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN
1644 bfd_put_32 (output_bfd,
1645 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN
1646 splt->contents + h->plt.offset + plt_off3);
1647
1648 /* Fill in the entry in the global offset table with the address of
1649 the relocating stub. */
1650 bfd_put_32 (output_bfd,
1651 (splt->output_section->vma
1652 + splt->output_offset
1653 + h->plt.offset
bac23f82 1654 + plt_stub_offset),
915e5146
HPN
1655 sgotplt->contents + got_offset);
1656
1657 /* Fill in the entry in the .rela.plt section. */
1658 rela.r_offset = (sgotplt->output_section->vma
1659 + sgotplt->output_offset
1660 + got_offset);
1661 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
1662 rela.r_addend = 0;
947216bf
AM
1663 loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
1664 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1665 }
1666
f5385ebf 1667 if (!h->def_regular)
915e5146
HPN
1668 {
1669 /* Mark the symbol as undefined, rather than as defined in
1670 the .plt section. Leave the value alone. */
1671 sym->st_shndx = SHN_UNDEF;
1672
1673 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
1674 know whether resetting the value is significant; if it really
1675 is, rather than a quirk or bug in the sparc port, then I
1676 believe we'd see this elsewhere. */
1677 /* If the symbol is weak, we do need to clear the value.
1678 Otherwise, the PLT entry would provide a definition for
1679 the symbol even if the symbol wasn't defined anywhere,
1680 and so the symbol would never be NULL. */
f5385ebf 1681 if (!h->ref_regular_nonweak)
915e5146
HPN
1682 sym->st_value = 0;
1683 }
1684 }
1685
e4a2175c
HPN
1686 /* For an ordinary program, we emit .got relocs only for symbols that
1687 are in the dynamic-symbols table and are either defined by the
1688 program or are undefined weak symbols, or are function symbols
1689 where we do not output a PLT: the PLT reloc was output above and all
1690 references to the function symbol are redirected to the PLT. */
4d96d128 1691 if (h->got.offset != (bfd_vma) -1
6849c52f
HPN
1692 && (info->shared
1693 || (h->dynindx != -1
e4a2175c 1694 && h->plt.offset == (bfd_vma) -1
f5385ebf 1695 && !h->def_regular
6849c52f 1696 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN
1697 {
1698 asection *sgot;
1699 asection *srela;
1700 Elf_Internal_Rela rela;
947216bf 1701 bfd_byte *loc;
dc810e39 1702 bfd_byte *where;
915e5146
HPN
1703
1704 /* This symbol has an entry in the global offset table. Set it up. */
1705
1706 sgot = bfd_get_section_by_name (dynobj, ".got");
1707 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1708 BFD_ASSERT (sgot != NULL && srela != NULL);
1709
1710 rela.r_offset = (sgot->output_section->vma
1711 + sgot->output_offset
dc810e39 1712 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN
1713
1714 /* If this is a static link, or it is a -Bsymbolic link and the
1715 symbol is defined locally or was forced to be local because
1716 of a version file, we just want to emit a RELATIVE reloc.
1717 The entry in the global offset table will already have been
1718 initialized in the relocate_section function. */
dc810e39 1719 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN
1720 if (! elf_hash_table (info)->dynamic_sections_created
1721 || (info->shared
1722 && (info->symbolic || h->dynindx == -1)
f5385ebf 1723 && h->def_regular))
915e5146
HPN
1724 {
1725 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 1726 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN
1727 }
1728 else
1729 {
dc810e39 1730 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN
1731 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
1732 rela.r_addend = 0;
1733 }
1734
947216bf
AM
1735 loc = srela->contents;
1736 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1737 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1738 }
1739
f5385ebf 1740 if (h->needs_copy)
915e5146
HPN
1741 {
1742 asection *s;
1743 Elf_Internal_Rela rela;
947216bf 1744 bfd_byte *loc;
915e5146
HPN
1745
1746 /* This symbol needs a copy reloc. Set it up. */
1747
1748 BFD_ASSERT (h->dynindx != -1
1749 && (h->root.type == bfd_link_hash_defined
1750 || h->root.type == bfd_link_hash_defweak));
1751
1752 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1753 ".rela.bss");
1754 BFD_ASSERT (s != NULL);
1755
1756 rela.r_offset = (h->root.u.def.value
1757 + h->root.u.def.section->output_section->vma
1758 + h->root.u.def.section->output_offset);
1759 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
1760 rela.r_addend = 0;
947216bf
AM
1761 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1762 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1763 }
1764
1765 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1766 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1767 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1768 sym->st_shndx = SHN_ABS;
1769
b34976b6 1770 return TRUE;
915e5146
HPN
1771}
1772\f
1773/* Finish up the dynamic sections. */
1774
b34976b6 1775static bfd_boolean
915e5146
HPN
1776elf_cris_finish_dynamic_sections (output_bfd, info)
1777 bfd *output_bfd;
1778 struct bfd_link_info *info;
1779{
1780 bfd *dynobj;
1781 asection *sgot;
1782 asection *sdyn;
1783
1784 dynobj = elf_hash_table (info)->dynobj;
1785
1786 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
1787 BFD_ASSERT (sgot != NULL);
1788 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1789
1790 if (elf_hash_table (info)->dynamic_sections_created)
1791 {
1792 asection *splt;
1793 Elf32_External_Dyn *dyncon, *dynconend;
1794
1795 splt = bfd_get_section_by_name (dynobj, ".plt");
1796 BFD_ASSERT (splt != NULL && sdyn != NULL);
1797
1798 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 1799 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN
1800 for (; dyncon < dynconend; dyncon++)
1801 {
1802 Elf_Internal_Dyn dyn;
1803 asection *s;
1804
1805 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1806
1807 switch (dyn.d_tag)
1808 {
1809 default:
1810 break;
1811
1812 case DT_PLTGOT:
1813 s = bfd_get_section_by_name (output_bfd, ".got");
1814 BFD_ASSERT (s != NULL);
1815 dyn.d_un.d_ptr = s->vma;
1816 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1817 break;
1818
1819 case DT_JMPREL:
1820 /* Yes, we *can* have a .plt and no .plt.rela, for instance
1821 if all symbols are found in the .got (not .got.plt). */
1822 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1823 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
1824 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1825 break;
1826
1827 case DT_PLTRELSZ:
1828 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1829 if (s == NULL)
1830 dyn.d_un.d_val = 0;
915e5146 1831 else
eea6121a 1832 dyn.d_un.d_val = s->size;
915e5146
HPN
1833 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1834 break;
1835
1836 case DT_RELASZ:
1837 /* The procedure linkage table relocs (DT_JMPREL) should
1838 not be included in the overall relocs (DT_RELA).
1839 Therefore, we override the DT_RELASZ entry here to
1840 make it not include the JMPREL relocs. Since the
1841 linker script arranges for .rela.plt to follow all
1842 other relocation sections, we don't have to worry
1843 about changing the DT_RELA entry. */
1844 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1845 if (s != NULL)
eea6121a 1846 dyn.d_un.d_val -= s->size;
915e5146
HPN
1847 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1848 break;
1849 }
1850 }
1851
1852 /* Fill in the first entry in the procedure linkage table. */
eea6121a 1853 if (splt->size > 0)
915e5146 1854 {
bac23f82
HPN
1855 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1856 {
1857 if (info->shared)
1858 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
1859 PLT_ENTRY_SIZE_V32);
1860 else
1861 {
1862 memcpy (splt->contents, elf_cris_plt0_entry_v32,
1863 PLT_ENTRY_SIZE_V32);
1864 bfd_put_32 (output_bfd,
1865 sgot->output_section->vma
1866 + sgot->output_offset + 4,
1867 splt->contents + 4);
1868
1869 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1870 = PLT_ENTRY_SIZE_V32;
1871 }
1872 }
915e5146 1873 else
bac23f82
HPN
1874 {
1875 if (info->shared)
1876 memcpy (splt->contents, elf_cris_pic_plt0_entry,
1877 PLT_ENTRY_SIZE);
1878 else
1879 {
1880 memcpy (splt->contents, elf_cris_plt0_entry,
1881 PLT_ENTRY_SIZE);
1882 bfd_put_32 (output_bfd,
1883 sgot->output_section->vma
1884 + sgot->output_offset + 4,
1885 splt->contents + 6);
1886 bfd_put_32 (output_bfd,
1887 sgot->output_section->vma
1888 + sgot->output_offset + 8,
1889 splt->contents + 14);
1890
1891 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1892 = PLT_ENTRY_SIZE;
1893 }
915e5146
HPN
1894 }
1895 }
1896 }
1897
1898 /* Fill in the first three entries in the global offset table. */
eea6121a 1899 if (sgot->size > 0)
915e5146
HPN
1900 {
1901 if (sdyn == NULL)
1902 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1903 else
1904 bfd_put_32 (output_bfd,
1905 sdyn->output_section->vma + sdyn->output_offset,
1906 sgot->contents);
1907 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1908 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1909 }
1910
1911 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1912
b34976b6 1913 return TRUE;
06c15ad7
HPN
1914}
1915\f
1916/* Return the section that should be marked against GC for a given
1917 relocation. */
1918
1919static asection *
1e2f5b6e 1920cris_elf_gc_mark_hook (sec, info, rel, h, sym)
b34976b6
AM
1921 asection *sec;
1922 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1923 Elf_Internal_Rela *rel;
1924 struct elf_link_hash_entry *h;
1925 Elf_Internal_Sym *sym;
06c15ad7
HPN
1926{
1927 if (h != NULL)
1928 {
1929 switch (ELF32_R_TYPE (rel->r_info))
1930 {
1931 case R_CRIS_GNU_VTINHERIT:
1932 case R_CRIS_GNU_VTENTRY:
1933 break;
1934
1935 default:
1936 switch (h->root.type)
1937 {
1938 case bfd_link_hash_defined:
1939 case bfd_link_hash_defweak:
1940 return h->root.u.def.section;
1941
1942 case bfd_link_hash_common:
1943 return h->root.u.c.p->section;
1944
1945 default:
1946 break;
1947 }
1948 }
1949 }
1950 else
1e2f5b6e 1951 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
06c15ad7
HPN
1952
1953 return NULL;
1954}
1955
1956/* Update the got entry reference counts for the section being removed. */
1957
b34976b6 1958static bfd_boolean
06c15ad7 1959cris_elf_gc_sweep_hook (abfd, info, sec, relocs)
b34976b6
AM
1960 bfd *abfd ATTRIBUTE_UNUSED;
1961 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1962 asection *sec ATTRIBUTE_UNUSED;
1963 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
06c15ad7 1964{
915e5146
HPN
1965 Elf_Internal_Shdr *symtab_hdr;
1966 struct elf_link_hash_entry **sym_hashes;
1967 bfd_signed_vma *local_got_refcounts;
1968 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN
1969 bfd *dynobj;
1970 asection *sgot;
1971 asection *srelgot;
1972
915e5146
HPN
1973 dynobj = elf_hash_table (info)->dynobj;
1974 if (dynobj == NULL)
b34976b6 1975 return TRUE;
915e5146 1976
babfd660
KH
1977 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1978 sym_hashes = elf_sym_hashes (abfd);
1979 local_got_refcounts = elf_local_got_refcounts (abfd);
1980
915e5146
HPN
1981 sgot = bfd_get_section_by_name (dynobj, ".got");
1982 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1983
1984 relend = relocs + sec->reloc_count;
1985 for (rel = relocs; rel < relend; rel++)
1986 {
babfd660 1987 unsigned long r_symndx;
3eb128b2
AM
1988 struct elf_link_hash_entry *h = NULL;
1989
1990 r_symndx = ELF32_R_SYM (rel->r_info);
1991 if (r_symndx >= symtab_hdr->sh_info)
1992 {
1993 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1994 while (h->root.type == bfd_link_hash_indirect
1995 || h->root.type == bfd_link_hash_warning)
1996 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1997 }
babfd660 1998
915e5146
HPN
1999 switch (ELF32_R_TYPE (rel->r_info))
2000 {
2001 case R_CRIS_16_GOT:
2002 case R_CRIS_32_GOT:
3eb128b2 2003 if (h != NULL)
915e5146 2004 {
915e5146
HPN
2005 if (h->got.refcount > 0)
2006 {
2007 --h->got.refcount;
2008 if (h->got.refcount == 0)
2009 {
2010 /* We don't need the .got entry any more. */
eea6121a
AM
2011 sgot->size -= 4;
2012 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2013 }
2014 }
2015 break;
2016 }
2017
2018 local_got_reloc:
2019 if (local_got_refcounts != NULL)
2020 {
2021 if (local_got_refcounts[r_symndx] > 0)
2022 {
2023 --local_got_refcounts[r_symndx];
2024 if (local_got_refcounts[r_symndx] == 0)
2025 {
2026 /* We don't need the .got entry any more. */
eea6121a 2027 sgot->size -= 4;
915e5146 2028 if (info->shared)
eea6121a 2029 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2030 }
2031 }
2032 }
2033 break;
2034
2035 case R_CRIS_16_GOTPLT:
2036 case R_CRIS_32_GOTPLT:
2037 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2038 if (h == NULL)
915e5146 2039 goto local_got_reloc;
e4a2175c 2040 /* Fall through. */
3eb128b2 2041
915e5146
HPN
2042 case R_CRIS_32_PLT_GOTREL:
2043 /* FIXME: We don't garbage-collect away the .got section. */
2044 if (local_got_refcounts != NULL)
2045 local_got_refcounts[-1]--;
2046 /* Fall through. */
3eb128b2 2047
915e5146
HPN
2048 case R_CRIS_8_PCREL:
2049 case R_CRIS_16_PCREL:
2050 case R_CRIS_32_PCREL:
2051 case R_CRIS_32_PLT_PCREL:
3eb128b2 2052 if (h != NULL)
915e5146 2053 {
0a4787a0
HPN
2054 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2055 && h->plt.refcount > 0)
915e5146
HPN
2056 --h->plt.refcount;
2057 }
2058 break;
2059
2060 default:
2061 break;
2062 }
2063 }
2064
b34976b6 2065 return TRUE;
06c15ad7
HPN
2066}
2067
915e5146
HPN
2068/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2069 entry but we found we will not create any. Called when we find we will
4d96d128
HPN
2070 not have any PLT for this symbol, by for example
2071 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2072 or elf_cris_size_dynamic_sections if no dynamic sections will be
2073 created (we're only linking static objects). */
915e5146 2074
b34976b6 2075static bfd_boolean
915e5146
HPN
2076elf_cris_adjust_gotplt_to_got (h, p)
2077 struct elf_cris_link_hash_entry *h;
2078 PTR p;
2079{
2080 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2081
e92d460e
AM
2082 if (h->root.root.type == bfd_link_hash_warning)
2083 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2084
915e5146
HPN
2085 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2086 if (h->gotplt_refcount <= 0)
b34976b6 2087 return TRUE;
915e5146
HPN
2088
2089 if (h->root.got.refcount > 0)
2090 {
2091 /* There's a GOT entry for this symbol. Just adjust the refcount.
2092 Probably not necessary at this stage, but keeping it accurate
2093 helps avoiding surprises later. */
2094 h->root.got.refcount += h->gotplt_refcount;
5e0f5ae3 2095 h->gotplt_refcount = 0;
915e5146
HPN
2096 }
2097 else
2098 {
4d96d128 2099 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM
2100 bfd *dynobj = elf_hash_table (info)->dynobj;
2101 asection *sgot;
2102 asection *srelgot;
2103
2104 BFD_ASSERT (dynobj != NULL);
2105 sgot = bfd_get_section_by_name (dynobj, ".got");
2106 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146
HPN
2107
2108 /* Put an accurate refcount there. */
2109 h->root.got.refcount = h->gotplt_refcount;
2110
5e0f5ae3 2111 h->gotplt_refcount = 0;
915e5146 2112
44aa49bb
HPN
2113 /* We always have a .got and a .rela.got section if there were
2114 GOTPLT relocs in input. */
2115 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN
2116
2117 /* Allocate space in the .got section. */
eea6121a 2118 sgot->size += 4;
915e5146
HPN
2119
2120 /* Allocate relocation space. */
eea6121a 2121 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2122 }
2123
b34976b6 2124 return TRUE;
915e5146
HPN
2125}
2126
2127/* Try to fold PLT entries with GOT entries. There are two cases when we
2128 want to do this:
2129
2130 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN
2131 references, and this is not the executable. We don't have to
2132 generate a PLT at all.
915e5146 2133
e4a2175c
HPN
2134 - When there are both (ordinary) PLT references and GOT references,
2135 and this isn't the executable.
915e5146 2136 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN
2137 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2138 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN
2139
2140 Though the latter case is handled when room for the PLT is allocated,
2141 not here.
2142
e4a2175c
HPN
2143 By folding into the GOT, we may need a round-trip to a PLT in the
2144 executable for calls, a loss in performance. Still, losing a
2145 reloc is a win in size and at least in start-up time.
2146
915e5146
HPN
2147 Note that this function is called before symbols are forced local by
2148 version scripts. The differing cases are handled by
2149 elf_cris_hide_symbol. */
2150
b34976b6 2151static bfd_boolean
915e5146
HPN
2152elf_cris_try_fold_plt_to_got (h, p)
2153 struct elf_cris_link_hash_entry *h;
2154 PTR p;
2155{
2156 struct bfd_link_info *info = (struct bfd_link_info *) p;
2157
2158 /* If there are no GOT references for this symbol, we can't fold any
2159 other reference so there's nothing to do. Likewise if there are no
2160 PLT references; GOTPLT references included. */
2161 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2162 return TRUE;
915e5146
HPN
2163
2164 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2165 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2166
2167 if (h->gotplt_refcount == h->root.plt.refcount)
2168 {
4d96d128 2169 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN
2170 references. Convert PLT to GOT references. */
2171 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2172 return FALSE;
915e5146
HPN
2173
2174 /* Clear the PLT references, so no PLT will be created. */
2175 h->root.plt.offset = (bfd_vma) -1;
2176 }
2177
b34976b6 2178 return TRUE;
915e5146
HPN
2179}
2180
2181/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2182 to use a GOT entry (and create one) rather than requiring a GOTPLT
2183 entry. */
2184
2185static void
e5094212 2186elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN
2187 struct bfd_link_info *info;
2188 struct elf_link_hash_entry *h;
b34976b6 2189 bfd_boolean force_local;
915e5146
HPN
2190{
2191 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2192
e5094212 2193 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN
2194}
2195
2196/* Adjust a symbol defined by a dynamic object and referenced by a
2197 regular object. The current definition is in some section of the
2198 dynamic object, but we're not including those sections. We have to
2199 change the definition to something the rest of the link can
2200 understand. */
2201
b34976b6 2202static bfd_boolean
915e5146
HPN
2203elf_cris_adjust_dynamic_symbol (info, h)
2204 struct bfd_link_info *info;
2205 struct elf_link_hash_entry *h;
2206{
2207 bfd *dynobj;
2208 asection *s;
2209 unsigned int power_of_two;
bac23f82 2210 bfd_size_type plt_entry_size;
915e5146
HPN
2211
2212 dynobj = elf_hash_table (info)->dynobj;
2213
2214 /* Make sure we know what is going on here. */
2215 BFD_ASSERT (dynobj != NULL
f5385ebf 2216 && (h->needs_plt
f6e332e6 2217 || h->u.weakdef != NULL
f5385ebf
AM
2218 || (h->def_dynamic
2219 && h->ref_regular
2220 && !h->def_regular)));
915e5146 2221
bac23f82
HPN
2222 plt_entry_size
2223 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2224 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2225
915e5146
HPN
2226 /* If this is a function, put it in the procedure linkage table. We
2227 will fill in the contents of the procedure linkage table later,
2228 when we know the address of the .got section. */
2229 if (h->type == STT_FUNC
f5385ebf 2230 || h->needs_plt)
915e5146 2231 {
6849c52f
HPN
2232 /* If we link a program (not a DSO), we'll get rid of unnecessary
2233 PLT entries; we point to the actual symbols -- even for pic
2234 relocs, because a program built with -fpic should have the same
2235 result as one built without -fpic, specifically considering weak
2236 symbols.
2237 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2238 if (! info->shared
f5385ebf 2239 && !h->def_dynamic)
915e5146
HPN
2240 {
2241 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN
2242 but the symbol was not defined by a dynamic object. In such
2243 a case, we don't actually need to build a procedure linkage
2244 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2245 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM
2246 BFD_ASSERT (h->needs_plt);
2247 h->needs_plt = 0;
915e5146 2248 h->plt.offset = (bfd_vma) -1;
915e5146
HPN
2249 return
2250 elf_cris_adjust_gotplt_to_got ((struct
2251 elf_cris_link_hash_entry *) h,
2252 info);
2253 }
2254
e4a2175c
HPN
2255 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2256 where a pointer-equivalent symbol was unimportant (i.e. more
2257 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2258 of the PLT. We can't for the executable, because the GOT
2259 entries will point to the PLT there (and be constant). */
2260 if (info->shared
2261 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2262 h, info))
b34976b6 2263 return FALSE;
915e5146
HPN
2264
2265 /* GC or folding may have rendered this entry unused. */
2266 if (h->plt.refcount <= 0)
2267 {
f5385ebf 2268 h->needs_plt = 0;
915e5146 2269 h->plt.offset = (bfd_vma) -1;
b34976b6 2270 return TRUE;
915e5146
HPN
2271 }
2272
2273 /* Make sure this symbol is output as a dynamic symbol. */
2274 if (h->dynindx == -1)
2275 {
c152c796 2276 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2277 return FALSE;
915e5146
HPN
2278 }
2279
2280 s = bfd_get_section_by_name (dynobj, ".plt");
2281 BFD_ASSERT (s != NULL);
2282
2283 /* If this is the first .plt entry, make room for the special
2284 first entry. */
eea6121a 2285 if (s->size == 0)
bac23f82 2286 s->size += plt_entry_size;
915e5146
HPN
2287
2288 /* If this symbol is not defined in a regular file, and we are
2289 not generating a shared library, then set the symbol to this
6849c52f 2290 location in the .plt. */
915e5146 2291 if (!info->shared
f5385ebf 2292 && !h->def_regular)
915e5146
HPN
2293 {
2294 h->root.u.def.section = s;
eea6121a 2295 h->root.u.def.value = s->size;
915e5146
HPN
2296 }
2297
4d96d128
HPN
2298 /* If there's already a GOT entry, use that, not a .got.plt. A
2299 GOT field still has a reference count when we get here; it's
e4a2175c
HPN
2300 not yet changed to an offset. We can't do this for an
2301 executable, because then the reloc associated with the PLT
2302 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2303 this to elf_cris_try_fold_plt_to_got. */
2304 if (info->shared && h->got.refcount > 0)
915e5146
HPN
2305 {
2306 h->got.refcount += h->plt.refcount;
2307
2308 /* Mark the PLT offset to use the GOT entry by setting the low
2309 bit in the plt offset; it is always a multiple of
bac23f82
HPN
2310 plt_entry_size (which is at least a multiple of 2). */
2311 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN
2312
2313 /* Change the PLT refcount to an offset. */
eea6121a 2314 h->plt.offset = s->size;
915e5146
HPN
2315
2316 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2317 that the got entry should be used instead. */
2318 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2319 h)->gotplt_offset == 0);
2320
2321 /* Make room for this entry. */
bac23f82 2322 s->size += plt_entry_size;
915e5146 2323
b34976b6 2324 return TRUE;
915e5146
HPN
2325 }
2326
2327 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2328 h->plt.offset = s->size;
915e5146
HPN
2329
2330 /* Make room for this entry. */
bac23f82 2331 s->size += plt_entry_size;
915e5146
HPN
2332
2333 /* We also need to make an entry in the .got.plt section, which
2334 will be placed in the .got section by the linker script. */
2335 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2336 = elf_cris_hash_table (info)->next_gotplt_entry;
2337 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2338
2339 s = bfd_get_section_by_name (dynobj, ".got.plt");
2340 BFD_ASSERT (s != NULL);
eea6121a 2341 s->size += 4;
915e5146
HPN
2342
2343 /* We also need to make an entry in the .rela.plt section. */
2344
2345 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2346 BFD_ASSERT (s != NULL);
eea6121a 2347 s->size += sizeof (Elf32_External_Rela);
915e5146 2348
b34976b6 2349 return TRUE;
915e5146
HPN
2350 }
2351
2352 /* Reinitialize the plt offset now that it is not used as a reference
2353 count any more. */
2354 h->plt.offset = (bfd_vma) -1;
2355
2356 /* If this is a weak symbol, and there is a real definition, the
2357 processor independent code will have arranged for us to see the
2358 real definition first, and we can just use the same value. */
f6e332e6 2359 if (h->u.weakdef != NULL)
915e5146 2360 {
f6e332e6
AM
2361 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2362 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2363 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2364 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 2365 return TRUE;
915e5146
HPN
2366 }
2367
2368 /* This is a reference to a symbol defined by a dynamic object which
2369 is not a function. */
2370
2371 /* If we are creating a shared library, we must presume that the
2372 only references to the symbol are via the global offset table.
2373 For such cases we need not do anything here; the relocations will
2374 be handled correctly by relocate_section. */
2375 if (info->shared)
b34976b6 2376 return TRUE;
915e5146
HPN
2377
2378 /* If there are no references to this symbol that do not use the
2379 GOT, we don't need to generate a copy reloc. */
f5385ebf 2380 if (!h->non_got_ref)
b34976b6 2381 return TRUE;
915e5146
HPN
2382
2383 /* We must allocate the symbol in our .dynbss section, which will
2384 become part of the .bss section of the executable. There will be
2385 an entry for this symbol in the .dynsym section. The dynamic
2386 object will contain position independent code, so all references
2387 from the dynamic object to this symbol will go through the global
2388 offset table. The dynamic linker will use the .dynsym entry to
2389 determine the address it must put in the global offset table, so
2390 both the dynamic object and the regular object will refer to the
2391 same memory location for the variable. */
2392
2393 s = bfd_get_section_by_name (dynobj, ".dynbss");
2394 BFD_ASSERT (s != NULL);
2395
2396 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2397 copy the initial value out of the dynamic object and into the
2398 runtime process image. We need to remember the offset into the
2399 .rela.bss section we are going to use. */
2400 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2401 {
2402 asection *srel;
2403
2404 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2405 BFD_ASSERT (srel != NULL);
eea6121a 2406 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 2407 h->needs_copy = 1;
915e5146
HPN
2408 }
2409
2410 /* Historic precedent: m68k and i386 allow max 8-byte alignment for the
2411 thing to copy; so do we. */
2412
2413 /* We need to figure out the alignment required for this symbol. I
2414 have no idea how ELF linkers handle this. */
2415 power_of_two = bfd_log2 (h->size);
2416 if (power_of_two > 3)
2417 power_of_two = 3;
2418
2419 /* Apply the required alignment. */
eea6121a 2420 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
915e5146
HPN
2421 if (power_of_two > bfd_get_section_alignment (dynobj, s))
2422 {
2423 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
b34976b6 2424 return FALSE;
915e5146
HPN
2425 }
2426
2427 /* Define the symbol as being at this point in the section. */
2428 h->root.u.def.section = s;
eea6121a 2429 h->root.u.def.value = s->size;
915e5146
HPN
2430
2431 /* Increment the section size to make room for the symbol. */
eea6121a 2432 s->size += h->size;
915e5146 2433
b34976b6 2434 return TRUE;
915e5146
HPN
2435}
2436
2437/* Look through the relocs for a section during the first phase. */
a7c10850 2438
b34976b6 2439static bfd_boolean
06c15ad7
HPN
2440cris_elf_check_relocs (abfd, info, sec, relocs)
2441 bfd *abfd;
2442 struct bfd_link_info *info;
2443 asection *sec;
2444 const Elf_Internal_Rela *relocs;
2445{
915e5146 2446 bfd *dynobj;
06c15ad7
HPN
2447 Elf_Internal_Shdr *symtab_hdr;
2448 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
915e5146 2449 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN
2450 const Elf_Internal_Rela *rel;
2451 const Elf_Internal_Rela *rel_end;
915e5146
HPN
2452 asection *sgot;
2453 asection *srelgot;
2454 asection *sreloc;
a7c10850 2455
1049f94e 2456 if (info->relocatable)
b34976b6 2457 return TRUE;
a7c10850 2458
915e5146 2459 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN
2460 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2461 sym_hashes = elf_sym_hashes (abfd);
a7c10850 2462 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
915e5146
HPN
2463 local_got_refcounts = elf_local_got_refcounts (abfd);
2464
2465 sgot = NULL;
2466 srelgot = NULL;
2467 sreloc = NULL;
2468
06c15ad7
HPN
2469 if (!elf_bad_symtab (abfd))
2470 sym_hashes_end -= symtab_hdr->sh_info;
a7c10850 2471
06c15ad7
HPN
2472 rel_end = relocs + sec->reloc_count;
2473 for (rel = relocs; rel < rel_end; rel++)
2474 {
2475 struct elf_link_hash_entry *h;
2476 unsigned long r_symndx;
915e5146 2477 enum elf_cris_reloc_type r_type;
a7c10850 2478
06c15ad7
HPN
2479 r_symndx = ELF32_R_SYM (rel->r_info);
2480 if (r_symndx < symtab_hdr->sh_info)
2481 h = NULL;
2482 else
973a3492
L
2483 {
2484 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2485 while (h->root.type == bfd_link_hash_indirect
2486 || h->root.type == bfd_link_hash_warning)
2487 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2488 }
a7c10850 2489
915e5146
HPN
2490 r_type = ELF32_R_TYPE (rel->r_info);
2491
2492 /* Some relocs require linker-created sections; we need to hang them
2493 on the first input bfd we found that contained dynamic relocs. */
2494 switch (r_type)
2495 {
2496 case R_CRIS_16_GOT:
2497 case R_CRIS_32_GOT:
2498 case R_CRIS_32_GOTREL:
2499 case R_CRIS_32_PLT_GOTREL:
2500 case R_CRIS_32_PLT_PCREL:
2501 case R_CRIS_16_GOTPLT:
2502 case R_CRIS_32_GOTPLT:
2503 if (dynobj == NULL)
2504 {
2505 elf_hash_table (info)->dynobj = dynobj = abfd;
2506
bac23f82
HPN
2507 /* We could handle this if we can get a handle on the
2508 output bfd in elf_cris_adjust_dynamic_symbol. Failing
2509 that, we must insist on dynobj being a specific mach. */
2510 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
2511 {
2512 (*_bfd_error_handler)
2513 (_("%B, section %A:\n v10/v32 compatible object %s"
2514 " must not contain a PIC relocation"),
2515 abfd, sec);
2516 return FALSE;
2517 }
2518
915e5146
HPN
2519 /* Create the .got section, so we can assume it's always
2520 present whenever there's a dynobj. */
2521 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 2522 return FALSE;
915e5146
HPN
2523 }
2524 break;
2525
2526 default:
2527 break;
2528 }
2529
2530 /* Some relocs require a global offset table (but perhaps not a
2531 specific GOT entry). */
4d96d128 2532 switch (r_type)
915e5146 2533 {
44aa49bb
HPN
2534 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
2535 entry only for local symbols. Unfortunately, we don't know
2536 until later on if there's a version script that forces the
2537 symbol local. We must have the .rela.got section in place
2538 before we know if the symbol looks global now, so we need
2539 to treat the reloc just like for R_CRIS_16_GOT and
2540 R_CRIS_32_GOT. */
2541 case R_CRIS_16_GOTPLT:
2542 case R_CRIS_32_GOTPLT:
915e5146
HPN
2543 case R_CRIS_16_GOT:
2544 case R_CRIS_32_GOT:
44aa49bb
HPN
2545 if (srelgot == NULL
2546 && (h != NULL || info->shared))
2547 {
2548 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2549 if (srelgot == NULL)
2550 {
3496cb2a
L
2551 srelgot = bfd_make_section_with_flags (dynobj,
2552 ".rela.got",
2553 (SEC_ALLOC
2554 | SEC_LOAD
2555 | SEC_HAS_CONTENTS
2556 | SEC_IN_MEMORY
2557 | SEC_LINKER_CREATED
2558 | SEC_READONLY));
44aa49bb 2559 if (srelgot == NULL
44aa49bb 2560 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 2561 return FALSE;
44aa49bb
HPN
2562 }
2563 }
2564 /* Fall through. */
2565
915e5146
HPN
2566 case R_CRIS_32_GOTREL:
2567 case R_CRIS_32_PLT_GOTREL:
2568 if (sgot == NULL)
2569 sgot = bfd_get_section_by_name (dynobj, ".got");
2570
2571 if (local_got_refcounts == NULL)
2572 {
dc810e39 2573 bfd_size_type amt;
915e5146
HPN
2574
2575 /* We use index local_got_refcounts[-1] to count all
2576 GOT-relative relocations that do not have explicit
2577 GOT entries. */
dc810e39
AM
2578 amt = symtab_hdr->sh_info + 1;
2579 amt *= sizeof (bfd_signed_vma);
51b64d56 2580 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
915e5146 2581 if (local_got_refcounts == NULL)
b34976b6 2582 return FALSE;
915e5146
HPN
2583
2584 local_got_refcounts++;
2585 elf_local_got_refcounts (abfd) = local_got_refcounts;
2586 }
2587 break;
2588
2589 default:
2590 break;
2591 }
2592
4d96d128 2593 switch (r_type)
06c15ad7 2594 {
915e5146
HPN
2595 case R_CRIS_16_GOTPLT:
2596 case R_CRIS_32_GOTPLT:
2597 /* Mark that we need a GOT entry if the PLT entry (and its GOT
2598 entry) is eliminated. We can only do this for a non-local
2599 symbol. */
2600 if (h != NULL)
2601 {
2602 ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
2603 goto handle_gotplt_reloc;
2604 }
2605 /* If h is NULL then this is a local symbol, and we must make a
2606 GOT entry for it, so handle it like a GOT reloc. */
2607 /* Fall through. */
2608
2609 case R_CRIS_16_GOT:
2610 case R_CRIS_32_GOT:
2611 /* This symbol requires a global offset table entry. */
915e5146
HPN
2612 if (h != NULL)
2613 {
51b64d56 2614 if (h->got.refcount == 0)
915e5146 2615 {
915e5146
HPN
2616 /* Make sure this symbol is output as a dynamic symbol. */
2617 if (h->dynindx == -1)
2618 {
c152c796 2619 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2620 return FALSE;
915e5146
HPN
2621 }
2622
2623 /* Allocate space in the .got section. */
eea6121a 2624 sgot->size += 4;
915e5146 2625 /* Allocate relocation space. */
eea6121a 2626 srelgot->size += sizeof (Elf32_External_Rela);
915e5146 2627 }
51b64d56 2628 h->got.refcount++;
915e5146
HPN
2629 }
2630 else
2631 {
2632 /* This is a global offset table entry for a local symbol. */
51b64d56 2633 if (local_got_refcounts[r_symndx] == 0)
915e5146 2634 {
eea6121a 2635 sgot->size += 4;
915e5146
HPN
2636 if (info->shared)
2637 {
2638 /* If we are generating a shared object, we need to
2639 output a R_CRIS_RELATIVE reloc so that the dynamic
2640 linker can adjust this GOT entry. */
eea6121a 2641 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2642 }
2643 }
51b64d56 2644 local_got_refcounts[r_symndx]++;
915e5146
HPN
2645 }
2646 break;
2647
2648 case R_CRIS_32_GOTREL:
2649 /* This reference requires a global offset table.
2650 FIXME: The actual refcount isn't used currently; the .got
2651 section can't be removed if there were any references in the
2652 input. */
2653 local_got_refcounts[-1]++;
2654 break;
2655
2656 handle_gotplt_reloc:
2657
2658 case R_CRIS_32_PLT_GOTREL:
2659 /* This reference requires a global offset table. */
2660 local_got_refcounts[-1]++;
2661 /* Fall through. */
2662
2663 case R_CRIS_32_PLT_PCREL:
2664 /* This symbol requires a procedure linkage table entry. We
2665 actually build the entry in adjust_dynamic_symbol,
2666 because this might be a case of linking PIC code which is
2667 never referenced by a dynamic object, in which case we
2668 don't need to generate a procedure linkage table entry
2669 after all. */
2670
ada1953e
HPN
2671 /* Beware: if we'd check for visibility of the symbol here
2672 (and not marking the need for a PLT when non-visible), we'd
2673 get into trouble with keeping handling consistent with
2674 regards to relocs found before definition and GOTPLT
2675 handling. Eliminable PLT entries will be dealt with later
2676 anyway. */
2677 if (h == NULL)
915e5146
HPN
2678 continue;
2679
f5385ebf 2680 h->needs_plt = 1;
51b64d56 2681 h->plt.refcount++;
915e5146
HPN
2682 break;
2683
2684 case R_CRIS_8:
2685 case R_CRIS_16:
2686 case R_CRIS_32:
2687 /* Let's help debug shared library creation. Any of these
2688 relocs can be used in shared libs, but pages containing them
2689 cannot be shared. Don't warn for sections we don't care
2690 about, such as debug sections or non-constant sections. We
2691 can't help tables of (global) function pointers, for example,
2692 though they must be emitted in a data section to avoid having
2693 impure text sections. */
2694 if (info->shared
2695 && (sec->flags & SEC_ALLOC) != 0
2696 && (sec->flags & SEC_READONLY) != 0)
2697 {
2698 /* FIXME: How do we make this optionally a warning only? */
8f615d07 2699 (*_bfd_error_handler)
bac23f82
HPN
2700 (_("%B, section %A:\n relocation %s should not"
2701 " be used in a shared object; recompile with -fPIC"),
d003868e
AM
2702 abfd,
2703 sec,
8f615d07 2704 cris_elf_howto_table[r_type].name);
915e5146
HPN
2705 }
2706 /* Fall through. */
2707
2708 case R_CRIS_8_PCREL:
2709 case R_CRIS_16_PCREL:
2710 case R_CRIS_32_PCREL:
2711 if (h != NULL)
2712 {
f5385ebf 2713 h->non_got_ref = 1;
915e5146
HPN
2714
2715 /* Make sure a plt entry is created for this symbol if it
2716 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN
2717 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2718 h->plt.refcount++;
915e5146
HPN
2719 }
2720
2721 /* If we are creating a shared library and this is not a local
2722 symbol, we need to copy the reloc into the shared library.
2723 However when linking with -Bsymbolic and this is a global
2724 symbol which is defined in an object we are including in the
2725 link (i.e., DEF_REGULAR is set), then we can resolve the
2726 reloc directly. At this point we have not seen all the input
2727 files, so it is possible that DEF_REGULAR is not set now but
2728 will be set later (it is never cleared). In case of a weak
2729 definition, DEF_REGULAR may be cleared later by a strong
2730 definition in a shared library. We account for that
2731 possibility below by storing information in the relocs_copied
2732 field of the hash table entry. A similar situation occurs
2733 when creating shared libraries and symbol visibility changes
2734 render the symbol local. */
2735
2736 /* No need to do anything if we're not creating a shared object. */
2737 if (! info->shared)
2738 break;
2739
2740 /* We don't need to handle relocs into sections not going into
2741 the "real" output. */
2742 if ((sec->flags & SEC_ALLOC) == 0)
2743 break;
2744
2745 /* We can only eliminate PC-relative relocs. */
2746 if (r_type == R_CRIS_8_PCREL
2747 || r_type == R_CRIS_16_PCREL
2748 || r_type == R_CRIS_32_PCREL)
2749 {
2750 /* If the symbol is local, then we can eliminate the reloc. */
0a4787a0 2751 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
2752 break;
2753
2754 /* If this is with -Bsymbolic and the symbol isn't weak, and
2755 is defined by an ordinary object (the ones we include in
2756 this shared library) then we can also eliminate the
2757 reloc. See comment above for more eliminable cases which
2758 we can't identify at this time. */
2759 if (info->symbolic
2760 && h->root.type != bfd_link_hash_defweak
f5385ebf 2761 && h->def_regular)
915e5146 2762 break;
bac23f82
HPN
2763
2764 if ((sec->flags & SEC_READONLY) != 0)
2765 {
2766 /* FIXME: How do we make this optionally a warning only? */
2767 (*_bfd_error_handler)
2768 (_("%B, section %A:\n relocation %s should not be used"
2769 " in a shared object; recompile with -fPIC"),
2770 abfd,
2771 sec,
2772 cris_elf_howto_table[r_type].name);
2773 }
915e5146
HPN
2774 }
2775
2776 /* We create a reloc section in dynobj and make room for this
2777 reloc. */
2778 if (sreloc == NULL)
2779 {
2780 const char *name;
2781
2782 name = (bfd_elf_string_from_elf_section
2783 (abfd,
2784 elf_elfheader (abfd)->e_shstrndx,
2785 elf_section_data (sec)->rel_hdr.sh_name));
2786 if (name == NULL)
b34976b6 2787 return FALSE;
915e5146
HPN
2788
2789 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2790 && strcmp (bfd_get_section_name (abfd, sec),
2791 name + 5) == 0);
2792
2793 sreloc = bfd_get_section_by_name (dynobj, name);
2794 if (sreloc == NULL)
2795 {
3496cb2a
L
2796 sreloc = bfd_make_section_with_flags (dynobj, name,
2797 (SEC_ALLOC
2798 | SEC_LOAD
2799 | SEC_HAS_CONTENTS
2800 | SEC_IN_MEMORY
2801 | SEC_LINKER_CREATED
2802 | SEC_READONLY));
915e5146 2803 if (sreloc == NULL
915e5146 2804 || !bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 2805 return FALSE;
915e5146 2806 }
99e4ae17
AJ
2807 if (sec->flags & SEC_READONLY)
2808 info->flags |= DF_TEXTREL;
915e5146
HPN
2809 }
2810
eea6121a 2811 sreloc->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2812
2813 /* If we are linking with -Bsymbolic, we count the number of PC
2814 relative relocations we have entered for this symbol, so that
2815 we can discard them again if the symbol is later defined by a
2816 regular object. We know that h is really a pointer to an
2817 elf_cris_link_hash_entry. */
4d96d128
HPN
2818 if ((r_type == R_CRIS_8_PCREL
2819 || r_type == R_CRIS_16_PCREL
2820 || r_type == R_CRIS_32_PCREL)
915e5146
HPN
2821 && info->symbolic)
2822 {
2823 struct elf_cris_link_hash_entry *eh;
2824 struct elf_cris_pcrel_relocs_copied *p;
2825
2826 eh = (struct elf_cris_link_hash_entry *) h;
2827
2828 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2829 if (p->section == sreloc)
2830 break;
2831
2832 if (p == NULL)
2833 {
2834 p = ((struct elf_cris_pcrel_relocs_copied *)
dc810e39 2835 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
915e5146 2836 if (p == NULL)
b34976b6 2837 return FALSE;
915e5146
HPN
2838 p->next = eh->pcrel_relocs_copied;
2839 eh->pcrel_relocs_copied = p;
2840 p->section = sreloc;
2841 p->count = 0;
2842 }
2843
2844 ++p->count;
2845 }
2846 break;
2847
06c15ad7
HPN
2848 /* This relocation describes the C++ object vtable hierarchy.
2849 Reconstruct it for later use during GC. */
2850 case R_CRIS_GNU_VTINHERIT:
c152c796 2851 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 2852 return FALSE;
06c15ad7 2853 break;
a7c10850 2854
06c15ad7
HPN
2855 /* This relocation describes which C++ vtable entries are actually
2856 used. Record for later use during GC. */
2857 case R_CRIS_GNU_VTENTRY:
c152c796 2858 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 2859 return FALSE;
06c15ad7 2860 break;
4d96d128
HPN
2861
2862 default:
2863 /* Other relocs do not appear here. */
2864 bfd_set_error (bfd_error_bad_value);
b34976b6 2865 return FALSE;
06c15ad7
HPN
2866 }
2867 }
a7c10850 2868
b34976b6 2869 return TRUE;
06c15ad7 2870}
4da81684 2871
915e5146
HPN
2872/* Set the sizes of the dynamic sections. */
2873
b34976b6 2874static bfd_boolean
915e5146 2875elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 2876 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN
2877 struct bfd_link_info *info;
2878{
2879 bfd *dynobj;
2880 asection *s;
b34976b6
AM
2881 bfd_boolean plt;
2882 bfd_boolean relocs;
915e5146
HPN
2883
2884 dynobj = elf_hash_table (info)->dynobj;
2885 BFD_ASSERT (dynobj != NULL);
2886
2887 if (elf_hash_table (info)->dynamic_sections_created)
2888 {
2889 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 2890 if (info->executable)
915e5146
HPN
2891 {
2892 s = bfd_get_section_by_name (dynobj, ".interp");
2893 BFD_ASSERT (s != NULL);
eea6121a 2894 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN
2895 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2896 }
2897 }
2898 else
2899 {
2900 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
2901 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2902 elf_cris_adjust_gotplt_to_got,
2903 (PTR) info);
2904
2905 /* We may have created entries in the .rela.got section.
2906 However, if we are not creating the dynamic sections, we will
2907 not actually use these entries. Reset the size of .rela.got,
2908 which will cause it to get stripped from the output file
2909 below. */
2910 s = bfd_get_section_by_name (dynobj, ".rela.got");
2911 if (s != NULL)
eea6121a 2912 s->size = 0;
915e5146
HPN
2913 }
2914
2915 /* If this is a -Bsymbolic shared link, then we need to discard all PC
2916 relative relocs against symbols defined in a regular object. We
2917 allocated space for them in the check_relocs routine, but we will not
2918 fill them in in the relocate_section routine. We also discard space
2919 for relocs that have become for local symbols due to symbol
4d96d128
HPN
2920 visibility changes. For programs, we discard space for relocs for
2921 symbols not referenced by any dynamic object. */
915e5146
HPN
2922 if (info->shared)
2923 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN
2924 elf_cris_discard_excess_dso_dynamics,
2925 (PTR) info);
2926 else
2927 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2928 elf_cris_discard_excess_program_dynamics,
915e5146
HPN
2929 (PTR) info);
2930
2931 /* The check_relocs and adjust_dynamic_symbol entry points have
2932 determined the sizes of the various dynamic sections. Allocate
2933 memory for them. */
b34976b6
AM
2934 plt = FALSE;
2935 relocs = FALSE;
915e5146
HPN
2936 for (s = dynobj->sections; s != NULL; s = s->next)
2937 {
2938 const char *name;
915e5146
HPN
2939
2940 if ((s->flags & SEC_LINKER_CREATED) == 0)
2941 continue;
2942
2943 /* It's OK to base decisions on the section name, because none
2944 of the dynobj section names depend upon the input files. */
2945 name = bfd_get_section_name (dynobj, s);
2946
915e5146
HPN
2947 if (strcmp (name, ".plt") == 0)
2948 {
c456f082
AM
2949 /* Remember whether there is a PLT. */
2950 plt = s->size != 0;
915e5146
HPN
2951 }
2952 else if (strncmp (name, ".rela", 5) == 0)
2953 {
c456f082 2954 if (s->size != 0)
915e5146 2955 {
915e5146
HPN
2956 /* Remember whether there are any reloc sections other
2957 than .rela.plt. */
2958 if (strcmp (name, ".rela.plt") != 0)
b34976b6 2959 relocs = TRUE;
915e5146 2960
915e5146
HPN
2961 /* We use the reloc_count field as a counter if we need
2962 to copy relocs into the output file. */
2963 s->reloc_count = 0;
2964 }
2965 }
c456f082
AM
2966 else if (strncmp (name, ".got", 4) != 0
2967 && strcmp (name, ".dynbss") != 0)
915e5146
HPN
2968 {
2969 /* It's not one of our sections, so don't allocate space. */
2970 continue;
2971 }
2972
c456f082 2973 if (s->size == 0)
915e5146 2974 {
c456f082
AM
2975 /* If we don't need this section, strip it from the
2976 output file. This is mostly to handle .rela.bss and
2977 .rela.plt. We must create both sections in
2978 create_dynamic_sections, because they must be created
2979 before the linker maps input sections to output
2980 sections. The linker does that before
2981 adjust_dynamic_symbol is called, and it is that
2982 function which decides whether anything needs to go
2983 into these sections. */
8423293d 2984 s->flags |= SEC_EXCLUDE;
915e5146
HPN
2985 continue;
2986 }
2987
c456f082
AM
2988 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2989 continue;
2990
915e5146
HPN
2991 /* Allocate memory for the section contents. We use bfd_zalloc here
2992 in case unused entries are not reclaimed before the section's
2993 contents are written out. This should not happen, but this way
2994 if it does, we will not write out garbage. For reloc sections,
2995 this will make entries have the type R_CRIS_NONE. */
eea6121a 2996 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 2997 if (s->contents == NULL)
b34976b6 2998 return FALSE;
915e5146
HPN
2999 }
3000
3001 if (elf_hash_table (info)->dynamic_sections_created)
3002 {
3003 /* Add some entries to the .dynamic section. We fill in the
3004 values later, in elf_cris_finish_dynamic_sections, but we
3005 must add the entries now so that we get the correct size for
3006 the .dynamic section. The DT_DEBUG entry is filled in by the
3007 dynamic linker and used by the debugger. */
dc810e39 3008#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3009 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3010
915e5146
HPN
3011 if (!info->shared)
3012 {
dc810e39 3013 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3014 return FALSE;
915e5146
HPN
3015 }
3016
3017 if (plt)
3018 {
dc810e39
AM
3019 if (!add_dynamic_entry (DT_PLTGOT, 0)
3020 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3021 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3022 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3023 return FALSE;
915e5146
HPN
3024 }
3025
3026 if (relocs)
3027 {
dc810e39
AM
3028 if (!add_dynamic_entry (DT_RELA, 0)
3029 || !add_dynamic_entry (DT_RELASZ, 0)
3030 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3031 return FALSE;
915e5146
HPN
3032 }
3033
99e4ae17 3034 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3035 {
dc810e39 3036 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3037 return FALSE;
915e5146
HPN
3038 info->flags |= DF_TEXTREL;
3039 }
3040 }
dc810e39 3041#undef add_dynamic_entry
915e5146 3042
b34976b6 3043 return TRUE;
915e5146
HPN
3044}
3045
3046/* This function is called via elf_cris_link_hash_traverse if we are
3047 creating a shared object. In the -Bsymbolic case, it discards the
3048 space allocated to copy PC relative relocs against symbols which
3049 are defined in regular objects. For the normal non-symbolic case,
3050 we also discard space for relocs that have become local due to
3051 symbol visibility changes. We allocated space for them in the
3052 check_relocs routine, but we won't fill them in in the
3053 relocate_section routine. */
3054
b34976b6 3055static bfd_boolean
4d96d128 3056elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN
3057 struct elf_cris_link_hash_entry *h;
3058 PTR inf;
3059{
3060 struct elf_cris_pcrel_relocs_copied *s;
3061 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3062
e92d460e
AM
3063 if (h->root.root.type == bfd_link_hash_warning)
3064 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3065
915e5146
HPN
3066 /* If a symbol has been forced local or we have found a regular
3067 definition for the symbolic link case, then we won't be needing
3068 any relocs. */
f5385ebf
AM
3069 if (h->root.def_regular
3070 && (h->root.forced_local
915e5146
HPN
3071 || info->symbolic))
3072 {
3073 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3074 s->section->size -= s->count * sizeof (Elf32_External_Rela);
4d96d128
HPN
3075 }
3076
b34976b6 3077 return TRUE;
4d96d128
HPN
3078}
3079
3080/* This function is called via elf_cris_link_hash_traverse if we are *not*
3081 creating a shared object. We discard space for relocs for symbols put
3082 in the .got, but which we found we do not have to resolve at run-time. */
3083
b34976b6 3084static bfd_boolean
4d96d128
HPN
3085elf_cris_discard_excess_program_dynamics (h, inf)
3086 struct elf_cris_link_hash_entry *h;
3087 PTR inf;
3088{
3089 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3090
e92d460e
AM
3091 if (h->root.root.type == bfd_link_hash_warning)
3092 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3093
4d96d128
HPN
3094 /* If we're not creating a shared library and have a symbol which is
3095 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN
3096 (or rather, not defined by a DSO) then lose the reloc for the .got
3097 (don't allocate room for it). Likewise for relocs for something
3098 for which we create a PLT. */
f5385ebf 3099 if (!h->root.def_dynamic
e4a2175c 3100 || h->root.plt.refcount > 0)
4d96d128
HPN
3101 {
3102 if (h->root.got.refcount > 0
3103 /* The size of this section is only valid and in sync with the
3104 various reference counts if we do dynamic; don't decrement it
3105 otherwise. */
3106 && elf_hash_table (info)->dynamic_sections_created)
3107 {
3108 bfd *dynobj = elf_hash_table (info)->dynobj;
3109 asection *srelgot;
3110
3111 BFD_ASSERT (dynobj != NULL);
99c79b2e 3112
4d96d128
HPN
3113 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3114
3115 BFD_ASSERT (srelgot != NULL);
3116
eea6121a 3117 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN
3118 }
3119
3120 /* If the locally-defined symbol isn't used by a DSO, then we don't
3121 have to export it as a dynamic symbol. This was already done for
3122 functions; doing this for all symbols would presumably not
e5dfef09
HPN
3123 introduce new problems. Of course we don't do this if we're
3124 exporting all dynamic symbols. */
0741c7be 3125 if (! info->export_dynamic
77cfaee6 3126 && h->root.dynindx != -1
f5385ebf
AM
3127 && !h->root.def_dynamic
3128 && !h->root.ref_dynamic)
e5dfef09
HPN
3129 {
3130 h->root.dynindx = -1;
3131 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3132 h->root.dynstr_index);
3133 }
915e5146
HPN
3134 }
3135
b34976b6 3136 return TRUE;
915e5146
HPN
3137}
3138
3139/* Reject a file depending on presence and expectation of prefixed
3140 underscores on symbols. */
4da81684 3141
b34976b6 3142static bfd_boolean
4da81684
HPN
3143cris_elf_object_p (abfd)
3144 bfd *abfd;
3145{
bac23f82
HPN
3146 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3147 return FALSE;
3148
4da81684
HPN
3149 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3150 return (bfd_get_symbol_leading_char (abfd) == '_');
3151 else
3152 return (bfd_get_symbol_leading_char (abfd) == 0);
3153}
3154
bac23f82
HPN
3155/* Mark presence or absence of leading underscore. Set machine type
3156 flags from mach type. */
4da81684
HPN
3157
3158static void
3159cris_elf_final_write_processing (abfd, linker)
3160 bfd *abfd;
b34976b6 3161 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 3162{
bac23f82
HPN
3163 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3164
3165 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 3166 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN
3167 e_flags |= EF_CRIS_UNDERSCORE;
3168
3169 switch (bfd_get_mach (abfd))
3170 {
3171 case bfd_mach_cris_v0_v10:
3172 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3173 break;
3174
3175 case bfd_mach_cris_v10_v32:
3176 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3177 break;
3178
3179 case bfd_mach_cris_v32:
3180 e_flags |= EF_CRIS_VARIANT_V32;
3181 break;
3182
3183 default:
3184 _bfd_abort (__FILE__, __LINE__,
3185 _("Unexpected machine number"));
3186 }
3187
3188 elf_elfheader (abfd)->e_flags = e_flags;
3189}
3190
3191/* Set the mach type from e_flags value. */
3192
3193static bfd_boolean
3194cris_elf_set_mach_from_flags (abfd, flags)
3195 bfd *abfd;
3196 unsigned long flags;
3197{
3198 switch (flags & EF_CRIS_VARIANT_MASK)
3199 {
3200 case EF_CRIS_VARIANT_ANY_V0_V10:
3201 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3202 break;
3203
3204 case EF_CRIS_VARIANT_V32:
3205 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3206 break;
3207
3208 case EF_CRIS_VARIANT_COMMON_V10_V32:
3209 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3210 break;
3211
3212 default:
3213 /* Since we don't recognize them, we obviously can't support them
3214 with this code; we'd have to require that all future handling
3215 would be optional. */
3216 bfd_set_error (bfd_error_wrong_format);
3217 return FALSE;
3218 }
3219
3220 return TRUE;
4da81684
HPN
3221}
3222
3223/* Display the flags field. */
3224
b34976b6 3225static bfd_boolean
4da81684
HPN
3226cris_elf_print_private_bfd_data (abfd, ptr)
3227 bfd *abfd;
3228 PTR ptr;
3229{
3230 FILE *file = (FILE *) ptr;
3231
f12123c0 3232 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN
3233
3234 _bfd_elf_print_private_bfd_data (abfd, ptr);
3235
3236 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3237
3238 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3239 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN
3240 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3241 == EF_CRIS_VARIANT_COMMON_V10_V32)
3242 fprintf (file, _(" [v10 and v32]"));
3243 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3244 == EF_CRIS_VARIANT_V32)
3245 fprintf (file, _(" [v32]"));
4da81684
HPN
3246
3247 fputc ('\n', file);
b34976b6 3248 return TRUE;
4da81684
HPN
3249}
3250
3251/* Don't mix files with and without a leading underscore. */
3252
b34976b6 3253static bfd_boolean
4da81684
HPN
3254cris_elf_merge_private_bfd_data (ibfd, obfd)
3255 bfd *ibfd;
3256 bfd *obfd;
3257{
bac23f82 3258 int imach, omach;
4da81684 3259
82e51918 3260 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 3261 return FALSE;
4da81684
HPN
3262
3263 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3264 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3265 return TRUE;
4da81684 3266
bac23f82
HPN
3267 imach = bfd_get_mach (ibfd);
3268
4da81684
HPN
3269 if (! elf_flags_init (obfd))
3270 {
3271 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 3272 elf_flags_init (obfd) = TRUE;
4da81684 3273
bac23f82
HPN
3274 /* We ignore the linker-set mach, and instead set it according to
3275 the first input file. This would also happen if we could
3276 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3277 This allows us to keep the same linker config across
3278 cris(v0..v10) and crisv32. The drawback is that we can't force
3279 the output type, which might be a sane thing to do for a
3280 v10+v32 compatibility object. */
3281 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3282 return FALSE;
4da81684
HPN
3283 }
3284
bac23f82
HPN
3285 if (bfd_get_symbol_leading_char (ibfd)
3286 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN
3287 {
3288 (*_bfd_error_handler)
bac23f82 3289 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM
3290 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3291 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3292 ibfd);
4da81684 3293 bfd_set_error (bfd_error_bad_value);
b34976b6 3294 return FALSE;
4da81684
HPN
3295 }
3296
bac23f82
HPN
3297 omach = bfd_get_mach (obfd);
3298
3299 if (imach != omach)
3300 {
3301 /* We can get an incompatible combination only if either is
3302 bfd_mach_cris_v32, and the other one isn't compatible. */
3303 if ((imach == bfd_mach_cris_v32
3304 && omach != bfd_mach_cris_v10_v32)
3305 || (omach == bfd_mach_cris_v32
3306 && imach != bfd_mach_cris_v10_v32))
3307 {
3308 (*_bfd_error_handler)
3309 ((imach == bfd_mach_cris_v32)
3310 ? _("%B contains CRIS v32 code, incompatible"
3311 " with previous objects")
3312 : _("%B contains non-CRIS-v32 code, incompatible"
3313 " with previous objects"),
3314 ibfd);
3315 bfd_set_error (bfd_error_bad_value);
3316 return FALSE;
3317 }
3318
3319 /* We don't have to check the case where the input is compatible
3320 with v10 and v32, because the output is already known to be set
3321 to the other (compatible) mach. */
3322 if (omach == bfd_mach_cris_v10_v32
3323 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3324 return FALSE;
3325 }
3326
b34976b6 3327 return TRUE;
4da81684 3328}
99e4ae17 3329
bac23f82
HPN
3330/* Do side-effects of e_flags copying to obfd. */
3331
3332static bfd_boolean
3333cris_elf_copy_private_bfd_data (ibfd, obfd)
3334 bfd *ibfd;
3335 bfd *obfd;
3336{
3337 /* Call the base function. */
3338 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
3339 return FALSE;
3340
3341 /* If output is big-endian for some obscure reason, stop here. */
3342 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
3343 return FALSE;
3344
3345 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3346 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3347 return TRUE;
3348
3349 /* Do what we really came here for. */
3350 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
3351}
99e4ae17
AJ
3352
3353static enum elf_reloc_type_class
f51e552e
AM
3354elf_cris_reloc_type_class (rela)
3355 const Elf_Internal_Rela *rela;
99e4ae17 3356{
f51e552e 3357 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ
3358 {
3359 case R_CRIS_RELATIVE:
3360 return reloc_class_relative;
3361 case R_CRIS_JUMP_SLOT:
3362 return reloc_class_plt;
3363 case R_CRIS_COPY:
3364 return reloc_class_copy;
3365 default:
3366 return reloc_class_normal;
3367 }
3368}
06c15ad7
HPN
3369\f
3370#define ELF_ARCH bfd_arch_cris
3371#define ELF_MACHINE_CODE EM_CRIS
3372#define ELF_MAXPAGESIZE 0x2000
3373
3374#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
3375#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 3376#define elf_symbol_leading_char 0
06c15ad7
HPN
3377
3378#define elf_info_to_howto_rel NULL
3379#define elf_info_to_howto cris_info_to_howto_rela
3380#define elf_backend_relocate_section cris_elf_relocate_section
3381#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
3382#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
3383#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN
3384#define elf_backend_grok_prstatus cris_elf_grok_prstatus
3385#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN
3386
3387#define elf_backend_can_gc_sections 1
51b64d56 3388#define elf_backend_can_refcount 1
06c15ad7 3389
4da81684
HPN
3390#define elf_backend_object_p cris_elf_object_p
3391#define elf_backend_final_write_processing \
3392 cris_elf_final_write_processing
3393#define bfd_elf32_bfd_print_private_bfd_data \
3394 cris_elf_print_private_bfd_data
3395#define bfd_elf32_bfd_merge_private_bfd_data \
3396 cris_elf_merge_private_bfd_data
bac23f82
HPN
3397#define bfd_elf32_bfd_copy_private_bfd_data \
3398 cris_elf_copy_private_bfd_data
4da81684 3399
06c15ad7
HPN
3400#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
3401
915e5146
HPN
3402#define bfd_elf32_bfd_link_hash_table_create \
3403 elf_cris_link_hash_table_create
3404#define elf_backend_adjust_dynamic_symbol \
3405 elf_cris_adjust_dynamic_symbol
3406#define elf_backend_size_dynamic_sections \
3407 elf_cris_size_dynamic_sections
3408#define elf_backend_finish_dynamic_symbol \
3409 elf_cris_finish_dynamic_symbol
3410#define elf_backend_finish_dynamic_sections \
3411 elf_cris_finish_dynamic_sections
3412#define elf_backend_create_dynamic_sections \
3413 _bfd_elf_create_dynamic_sections
3414#define bfd_elf32_bfd_final_link \
c152c796 3415 bfd_elf_gc_common_final_link
915e5146 3416#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 3417#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN
3418
3419#define elf_backend_want_got_plt 1
3420#define elf_backend_plt_readonly 1
3421#define elf_backend_want_plt_sym 0
3422#define elf_backend_got_header_size 12
915e5146 3423
06c15ad7
HPN
3424/* Later, we my want to optimize RELA entries into REL entries for dynamic
3425 linking and libraries (if it's a win of any significance). Until then,
3426 take the easy route. */
3427#define elf_backend_may_use_rel_p 0
3428#define elf_backend_may_use_rela_p 1
f0fe0e16 3429#define elf_backend_rela_normal 1
06c15ad7
HPN
3430
3431#include "elf32-target.h"
4da81684
HPN
3432
3433#define INCLUDED_TARGET_FILE
3434
3435#undef TARGET_LITTLE_SYM
3436#undef TARGET_LITTLE_NAME
3437#undef elf_symbol_leading_char
3438
3439#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3440#define TARGET_LITTLE_NAME "elf32-us-cris"
3441#define elf_symbol_leading_char '_'
3442
3443#include "elf32-target.h"
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