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[thirdparty/binutils-gdb.git] / bfd / elf32-cris.c
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06c15ad7 1/* CRIS-specific support for 32-bit ELF.
66eb6687 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006
3eb128b2 3 Free Software Foundation, Inc.
06c15ad7
HPN
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
HPN
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
72209a1f
HPN
44 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
45
b34976b6 46static bfd_boolean cris_elf_relocate_section
06c15ad7
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_object_p PARAMS ((bfd *));
4da81684 55
b34976b6 56static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
4da81684 57
bac23f82
HPN
58static bfd_boolean cris_elf_set_mach_from_flags
59 PARAMS ((bfd *, unsigned long int));
60
b34976b6 61static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
4da81684 62
b34976b6 63static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
bac23f82 64static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
4da81684 65
915e5146 66struct elf_cris_link_hash_entry;
b34976b6 67static bfd_boolean elf_cris_discard_excess_dso_dynamics
4d96d128 68 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 69static bfd_boolean elf_cris_discard_excess_program_dynamics
915e5146 70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 71static bfd_boolean elf_cris_adjust_gotplt_to_got
915e5146 72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 73static bfd_boolean elf_cris_try_fold_plt_to_got
915e5146
HPN
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75static struct bfd_hash_entry *elf_cris_link_hash_newfunc
76 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
77static struct bfd_link_hash_table *elf_cris_link_hash_table_create
78 PARAMS ((bfd *));
b34976b6 79static bfd_boolean elf_cris_adjust_dynamic_symbol
915e5146 80 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 81static bfd_boolean cris_elf_check_relocs
99c79b2e
AJ
82 PARAMS ((bfd *, struct bfd_link_info *, asection *,
83 const Elf_Internal_Rela *));
84
b34976b6 85static bfd_boolean elf_cris_size_dynamic_sections
915e5146 86 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 87static bfd_boolean elf_cris_finish_dynamic_symbol
915e5146
HPN
88 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
89 Elf_Internal_Sym *));
b34976b6 90static bfd_boolean elf_cris_finish_dynamic_sections
915e5146
HPN
91 PARAMS ((bfd *, struct bfd_link_info *));
92static void elf_cris_hide_symbol
b34976b6 93 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
99e4ae17 94static enum elf_reloc_type_class elf_cris_reloc_type_class
f51e552e 95 PARAMS ((const Elf_Internal_Rela *));
915e5146 96
06c15ad7
HPN
97static reloc_howto_type cris_elf_howto_table [] =
98{
99 /* This reloc does nothing. */
100 HOWTO (R_CRIS_NONE, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
b34976b6 104 FALSE, /* pc_relative */
06c15ad7
HPN
105 0, /* bitpos */
106 complain_overflow_bitfield, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_CRIS_NONE", /* name */
b34976b6 109 FALSE, /* partial_inplace */
06c15ad7
HPN
110 0, /* src_mask */
111 0, /* dst_mask */
b34976b6 112 FALSE), /* pcrel_offset */
06c15ad7
HPN
113
114 /* An 8 bit absolute relocation. */
115 HOWTO (R_CRIS_8, /* type */
116 0, /* rightshift */
117 0, /* size (0 = byte, 1 = short, 2 = long) */
118 8, /* bitsize */
b34976b6 119 FALSE, /* pc_relative */
06c15ad7
HPN
120 0, /* bitpos */
121 complain_overflow_bitfield, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_CRIS_8", /* name */
b34976b6 124 FALSE, /* partial_inplace */
06c15ad7
HPN
125 0x0000, /* src_mask */
126 0x00ff, /* dst_mask */
b34976b6 127 FALSE), /* pcrel_offset */
06c15ad7
HPN
128
129 /* A 16 bit absolute relocation. */
130 HOWTO (R_CRIS_16, /* type */
131 0, /* rightshift */
132 1, /* size (0 = byte, 1 = short, 2 = long) */
133 16, /* bitsize */
b34976b6 134 FALSE, /* pc_relative */
06c15ad7
HPN
135 0, /* bitpos */
136 complain_overflow_bitfield, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_CRIS_16", /* name */
b34976b6 139 FALSE, /* partial_inplace */
06c15ad7
HPN
140 0x00000000, /* src_mask */
141 0x0000ffff, /* dst_mask */
b34976b6 142 FALSE), /* pcrel_offset */
06c15ad7
HPN
143
144 /* A 32 bit absolute relocation. */
145 HOWTO (R_CRIS_32, /* type */
146 0, /* rightshift */
147 2, /* size (0 = byte, 1 = short, 2 = long) */
148 32, /* bitsize */
b34976b6 149 FALSE, /* pc_relative */
06c15ad7 150 0, /* bitpos */
b2efcd36
HPN
151 /* We don't want overflow complaints for 64-bit vma builds
152 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
153 32-bit ELF) where sym=0xc0001234.
154 Don't do this for the PIC relocs, as we don't expect to
155 see them with large offsets. */
156 complain_overflow_dont, /* complain_on_overflow */
06c15ad7
HPN
157 bfd_elf_generic_reloc, /* special_function */
158 "R_CRIS_32", /* name */
b34976b6 159 FALSE, /* partial_inplace */
06c15ad7
HPN
160 0x00000000, /* src_mask */
161 0xffffffff, /* dst_mask */
b34976b6 162 FALSE), /* pcrel_offset */
06c15ad7 163
915e5146 164 /* An 8 bit PC-relative relocation. */
06c15ad7
HPN
165 HOWTO (R_CRIS_8_PCREL, /* type */
166 0, /* rightshift */
167 0, /* size (0 = byte, 1 = short, 2 = long) */
168 8, /* bitsize */
b34976b6 169 TRUE, /* pc_relative */
06c15ad7
HPN
170 0, /* bitpos */
171 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 172 cris_elf_pcrel_reloc, /* special_function */
06c15ad7 173 "R_CRIS_8_PCREL", /* name */
b34976b6 174 FALSE, /* partial_inplace */
06c15ad7
HPN
175 0x0000, /* src_mask */
176 0x00ff, /* dst_mask */
b34976b6 177 TRUE), /* pcrel_offset */
06c15ad7 178
915e5146 179 /* A 16 bit PC-relative relocation. */
06c15ad7
HPN
180 HOWTO (R_CRIS_16_PCREL, /* type */
181 0, /* rightshift */
182 1, /* size (0 = byte, 1 = short, 2 = long) */
183 16, /* bitsize */
b34976b6 184 TRUE, /* pc_relative */
06c15ad7
HPN
185 0, /* bitpos */
186 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 187 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 188 "R_CRIS_16_PCREL", /* name */
b34976b6 189 FALSE, /* partial_inplace */
06c15ad7
HPN
190 0x00000000, /* src_mask */
191 0x0000ffff, /* dst_mask */
b34976b6 192 TRUE), /* pcrel_offset */
06c15ad7 193
915e5146 194 /* A 32 bit PC-relative relocation. */
06c15ad7
HPN
195 HOWTO (R_CRIS_32_PCREL, /* type */
196 0, /* rightshift */
197 2, /* size (0 = byte, 1 = short, 2 = long) */
198 32, /* bitsize */
b34976b6 199 TRUE, /* pc_relative */
06c15ad7
HPN
200 0, /* bitpos */
201 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 202 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 203 "R_CRIS_32_PCREL", /* name */
b34976b6 204 FALSE, /* partial_inplace */
06c15ad7
HPN
205 0x00000000, /* src_mask */
206 0xffffffff, /* dst_mask */
b34976b6 207 TRUE), /* pcrel_offset */
06c15ad7 208
915e5146
HPN
209 /* GNU extension to record C++ vtable hierarchy. */
210 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
06c15ad7
HPN
211 0, /* rightshift */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
213 0, /* bitsize */
b34976b6 214 FALSE, /* pc_relative */
06c15ad7
HPN
215 0, /* bitpos */
216 complain_overflow_dont, /* complain_on_overflow */
217 NULL, /* special_function */
218 "R_CRIS_GNU_VTINHERIT", /* name */
b34976b6 219 FALSE, /* partial_inplace */
06c15ad7
HPN
220 0, /* src_mask */
221 0, /* dst_mask */
b34976b6 222 FALSE), /* pcrel_offset */
06c15ad7 223
915e5146
HPN
224 /* GNU extension to record C++ vtable member usage. */
225 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
06c15ad7
HPN
226 0, /* rightshift */
227 2, /* size (0 = byte, 1 = short, 2 = long) */
228 0, /* bitsize */
b34976b6 229 FALSE, /* pc_relative */
06c15ad7
HPN
230 0, /* bitpos */
231 complain_overflow_dont, /* complain_on_overflow */
232 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
233 "R_CRIS_GNU_VTENTRY", /* name */
b34976b6 234 FALSE, /* partial_inplace */
06c15ad7
HPN
235 0, /* src_mask */
236 0, /* dst_mask */
b34976b6 237 FALSE), /* pcrel_offset */
915e5146
HPN
238
239 /* This is used only by the dynamic linker. The symbol should exist
240 both in the object being run and in some shared library. The
241 dynamic linker copies the data addressed by the symbol from the
242 shared library into the object, because the object being
243 run has to have the data at some particular address. */
244 HOWTO (R_CRIS_COPY, /* type */
245 0, /* rightshift */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
247 32, /* bitsize */
b34976b6 248 FALSE, /* pc_relative */
915e5146
HPN
249 0, /* bitpos */
250 complain_overflow_bitfield, /* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_CRIS_COPY", /* name */
b34976b6 253 FALSE, /* partial_inplace */
915e5146
HPN
254 0, /* src_mask */
255 0, /* dst_mask */
b34976b6 256 FALSE), /* pcrel_offset */
915e5146
HPN
257
258 /* Like R_CRIS_32, but used when setting global offset table entries. */
259 HOWTO (R_CRIS_GLOB_DAT, /* type */
260 0, /* rightshift */
261 2, /* size (0 = byte, 1 = short, 2 = long) */
262 32, /* bitsize */
b34976b6 263 FALSE, /* pc_relative */
915e5146
HPN
264 0, /* bitpos */
265 complain_overflow_bitfield, /* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_CRIS_GLOB_DAT", /* name */
b34976b6 268 FALSE, /* partial_inplace */
915e5146
HPN
269 0, /* src_mask */
270 0xffffffff, /* dst_mask */
b34976b6 271 FALSE), /* pcrel_offset */
915e5146
HPN
272
273 /* Marks a procedure linkage table entry for a symbol. */
274 HOWTO (R_CRIS_JUMP_SLOT, /* type */
275 0, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 32, /* bitsize */
b34976b6 278 FALSE, /* pc_relative */
915e5146
HPN
279 0, /* bitpos */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_CRIS_JUMP_SLOT", /* name */
b34976b6 283 FALSE, /* partial_inplace */
915e5146
HPN
284 0, /* src_mask */
285 0, /* dst_mask */
b34976b6 286 FALSE), /* pcrel_offset */
915e5146
HPN
287
288 /* Used only by the dynamic linker. When the object is run, this
289 longword is set to the load address of the object, plus the
290 addend. */
291 HOWTO (R_CRIS_RELATIVE, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
b34976b6 295 FALSE, /* pc_relative */
915e5146
HPN
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_CRIS_RELATIVE", /* name */
b34976b6 300 FALSE, /* partial_inplace */
915e5146
HPN
301 0, /* src_mask */
302 0xffffffff, /* dst_mask */
b34976b6 303 FALSE), /* pcrel_offset */
915e5146
HPN
304
305 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
306 HOWTO (R_CRIS_16_GOT, /* type */
307 0, /* rightshift */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
309 16, /* bitsize */
b34976b6 310 FALSE, /* pc_relative */
915e5146
HPN
311 0, /* bitpos */
312 complain_overflow_bitfield, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_CRIS_16_GOT", /* name */
b34976b6 315 FALSE, /* partial_inplace */
915e5146
HPN
316 0, /* src_mask */
317 0xffff, /* dst_mask */
b34976b6 318 FALSE), /* pcrel_offset */
915e5146
HPN
319
320 HOWTO (R_CRIS_32_GOT, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 32, /* bitsize */
b34976b6 324 FALSE, /* pc_relative */
915e5146
HPN
325 0, /* bitpos */
326 complain_overflow_bitfield, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_CRIS_32_GOT", /* name */
b34976b6 329 FALSE, /* partial_inplace */
915e5146
HPN
330 0, /* src_mask */
331 0xffffffff, /* dst_mask */
b34976b6 332 FALSE), /* pcrel_offset */
915e5146
HPN
333
334 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
335 the GOT table for the symbol. */
336 HOWTO (R_CRIS_16_GOTPLT, /* type */
337 0, /* rightshift */
338 1, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
b34976b6 340 FALSE, /* pc_relative */
915e5146
HPN
341 0, /* bitpos */
342 complain_overflow_bitfield, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_CRIS_16_GOTPLT", /* name */
b34976b6 345 FALSE, /* partial_inplace */
915e5146
HPN
346 0, /* src_mask */
347 0xffff, /* dst_mask */
b34976b6 348 FALSE), /* pcrel_offset */
915e5146
HPN
349
350 HOWTO (R_CRIS_32_GOTPLT, /* type */
351 0, /* rightshift */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
353 32, /* bitsize */
b34976b6 354 FALSE, /* pc_relative */
915e5146
HPN
355 0, /* bitpos */
356 complain_overflow_bitfield, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_CRIS_32_GOTPLT", /* name */
b34976b6 359 FALSE, /* partial_inplace */
915e5146
HPN
360 0, /* src_mask */
361 0xffffffff, /* dst_mask */
b34976b6 362 FALSE), /* pcrel_offset */
915e5146
HPN
363
364 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
365 be necessary. */
366 HOWTO (R_CRIS_32_GOTREL, /* type */
367 0, /* rightshift */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
369 32, /* bitsize */
b34976b6 370 FALSE, /* pc_relative */
915e5146
HPN
371 0, /* bitpos */
372 complain_overflow_bitfield, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* special_function */
374 "R_CRIS_32_GOTREL", /* name */
b34976b6 375 FALSE, /* partial_inplace */
915e5146
HPN
376 0, /* src_mask */
377 0xffffffff, /* dst_mask */
b34976b6 378 FALSE), /* pcrel_offset */
915e5146
HPN
379
380 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
381 to create PLT entry for symbol. */
382 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
383 0, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 32, /* bitsize */
b34976b6 386 FALSE, /* pc_relative */
915e5146
HPN
387 0, /* bitpos */
388 complain_overflow_bitfield, /* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_CRIS_32_PLT_GOTREL", /* name */
b34976b6 391 FALSE, /* partial_inplace */
915e5146
HPN
392 0, /* src_mask */
393 0xffffffff, /* dst_mask */
b34976b6 394 FALSE), /* pcrel_offset */
915e5146
HPN
395
396 /* A 32-bit offset from PC (location after the relocation) + addend to
397 entry for this symbol in PLT and request to create PLT entry for
398 symbol. */
399 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
400 0, /* rightshift */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
402 32, /* bitsize */
b34976b6 403 TRUE, /* pc_relative */
915e5146
HPN
404 0, /* bitpos */
405 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 406 cris_elf_pcrel_reloc, /* special_function */
915e5146 407 "R_CRIS_32_PLT_PCREL", /* name */
b34976b6 408 FALSE, /* partial_inplace */
915e5146
HPN
409 0, /* src_mask */
410 0xffffffff, /* dst_mask */
b34976b6 411 TRUE) /* pcrel_offset */
06c15ad7
HPN
412};
413\f
414/* Map BFD reloc types to CRIS ELF reloc types. */
415
416struct cris_reloc_map
417{
418 bfd_reloc_code_real_type bfd_reloc_val;
419 unsigned int cris_reloc_val;
420};
421
422static const struct cris_reloc_map cris_reloc_map [] =
423{
424 { BFD_RELOC_NONE, R_CRIS_NONE },
425 { BFD_RELOC_8, R_CRIS_8 },
426 { BFD_RELOC_16, R_CRIS_16 },
427 { BFD_RELOC_32, R_CRIS_32 },
428 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
429 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
430 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
431 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
915e5146
HPN
432 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
433 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
434 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
435 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
436 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
437 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
438 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
439 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
440 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
441 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
442 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
443 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }
06c15ad7
HPN
444};
445
446static reloc_howto_type *
447cris_reloc_type_lookup (abfd, code)
448 bfd * abfd ATTRIBUTE_UNUSED;
449 bfd_reloc_code_real_type code;
450{
908d94bf 451 unsigned int i;
06c15ad7 452
908d94bf 453 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
06c15ad7
HPN
454 if (cris_reloc_map [i].bfd_reloc_val == code)
455 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
a7c10850 456
06c15ad7
HPN
457 return NULL;
458}
459
460/* Set the howto pointer for an CRIS ELF reloc. */
461
462static void
463cris_info_to_howto_rela (abfd, cache_ptr, dst)
464 bfd * abfd ATTRIBUTE_UNUSED;
465 arelent * cache_ptr;
947216bf 466 Elf_Internal_Rela * dst;
06c15ad7
HPN
467{
468 unsigned int r_type;
469
470 r_type = ELF32_R_TYPE (dst->r_info);
471 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
472 cache_ptr->howto = & cris_elf_howto_table [r_type];
473}
bac23f82
HPN
474
475bfd_reloc_status_type
476cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
477 output_bfd, error_message)
478 bfd *abfd ATTRIBUTE_UNUSED;
479 arelent *reloc_entry;
480 asymbol *symbol;
481 PTR data ATTRIBUTE_UNUSED;
482 asection *input_section;
483 bfd *output_bfd;
484 char **error_message ATTRIBUTE_UNUSED;
485{
486 /* By default (using only bfd_elf_generic_reloc when linking to
487 non-ELF formats) PC-relative relocs are relative to the beginning
488 of the reloc. CRIS PC-relative relocs are relative to the position
489 *after* the reloc because that's what pre-CRISv32 PC points to
490 after reading an insn field with that reloc. (For CRISv32, PC is
491 actually relative to the start of the insn, but we keep the old
492 definition.) Still, we use as much generic machinery as we can.
493
494 Only adjust when doing a final link. */
495 if (output_bfd == (bfd *) NULL)
496 reloc_entry->addend -= 1 << reloc_entry->howto->size;
497
498 return
499 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
500 input_section, output_bfd, error_message);
501}
06c15ad7 502\f
bac23f82
HPN
503/* Support for core dump NOTE sections.
504 The slightly unintuitive code layout is an attempt to keep at least
505 some similarities with other ports, hoping to simplify general
506 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
72209a1f 507
b34976b6 508static bfd_boolean
72209a1f
HPN
509cris_elf_grok_prstatus (abfd, note)
510 bfd *abfd;
511 Elf_Internal_Note *note;
512{
513 int offset;
eea6121a 514 size_t size;
72209a1f 515
bac23f82
HPN
516 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
517 switch (note->descsz)
518 {
519 default:
520 return FALSE;
521
522 case 202: /* Linux/CRISv32 */
523 /* pr_cursig */
524 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
525
526 /* pr_pid */
527 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
528
529 /* pr_reg */
530 offset = 70;
531 size = 128;
532
533 break;
534 }
535 else
536 switch (note->descsz)
537 {
72209a1f 538 default:
b34976b6 539 return FALSE;
72209a1f 540
bc0d28ee 541 case 214: /* Linux/CRIS */
72209a1f
HPN
542 /* pr_cursig */
543 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
544
545 /* pr_pid */
546 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
547
548 /* pr_reg */
549 offset = 70;
eea6121a 550 size = 140;
72209a1f
HPN
551
552 break;
bac23f82 553 }
72209a1f
HPN
554
555 /* Make a ".reg/999" section. */
556 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 557 size, note->descpos + offset);
72209a1f
HPN
558}
559
b34976b6 560static bfd_boolean
72209a1f
HPN
561cris_elf_grok_psinfo (abfd, note)
562 bfd *abfd;
563 Elf_Internal_Note *note;
564{
bac23f82
HPN
565 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
566 switch (note->descsz)
567 {
568 default:
569 return FALSE;
570
571 case 124: /* Linux/CRISv32 elf_prpsinfo */
572 elf_tdata (abfd)->core_program
573 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
574 elf_tdata (abfd)->core_command
575 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
576 }
577 else
578 switch (note->descsz)
579 {
72209a1f 580 default:
b34976b6 581 return FALSE;
72209a1f
HPN
582
583 case 124: /* Linux/CRIS elf_prpsinfo */
584 elf_tdata (abfd)->core_program
bac23f82 585 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
72209a1f 586 elf_tdata (abfd)->core_command
bac23f82
HPN
587 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
588 }
72209a1f
HPN
589
590 /* Note that for some reason, a spurious space is tacked
591 onto the end of the args in some (at least one anyway)
592 implementations, so strip it off if it exists. */
593
594 {
595 char *command = elf_tdata (abfd)->core_command;
596 int n = strlen (command);
597
598 if (0 < n && command[n - 1] == ' ')
599 command[n - 1] = '\0';
600 }
601
b34976b6 602 return TRUE;
72209a1f
HPN
603}
604\f
915e5146
HPN
605/* The name of the dynamic interpreter. This is put in the .interp
606 section. */
607
608#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
609
610/* The size in bytes of an entry in the procedure linkage table. */
611
612#define PLT_ENTRY_SIZE 20
bac23f82 613#define PLT_ENTRY_SIZE_V32 26
915e5146
HPN
614
615/* The first entry in an absolute procedure linkage table looks like this. */
616
617static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
618{
619 0xfc, 0xe1,
cedb70c5 620 0x7e, 0x7e, /* push mof. */
915e5146
HPN
621 0x7f, 0x0d, /* (dip [pc+]) */
622 0, 0, 0, 0, /* Replaced with address of .got + 4. */
623 0x30, 0x7a, /* move [...],mof */
624 0x7f, 0x0d, /* (dip [pc+]) */
625 0, 0, 0, 0, /* Replaced with address of .got + 8. */
bac23f82
HPN
626 0x30, 0x09 /* jump [...] */
627};
628
629static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
630{
631 0x84, 0xe2, /* subq 4,$sp */
632 0x6f, 0xfe, /* move.d 0,$acr */
633 0, 0, 0, 0, /* Replaced by address of .got + 4. */
634 0x7e, 0x7a, /* move $mof,[$sp] */
635 0x3f, 0x7a, /* move [$acr],$mof */
636 0x04, 0xf2, /* addq 4,acr */
637 0x6f, 0xfa, /* move.d [$acr],$acr */
638 0xbf, 0x09, /* jump $acr */
639 0xb0, 0x05, /* nop */
640 0, 0 /* Pad out to 26 bytes. */
915e5146
HPN
641};
642
643/* Subsequent entries in an absolute procedure linkage table look like
644 this. */
645
646static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
647{
648 0x7f, 0x0d, /* (dip [pc+]) */
649 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
650 0x30, 0x09, /* jump [...] */
651 0x3f, 0x7e, /* move [pc+],mof */
652 0, 0, 0, 0, /* Replaced with offset into relocation table. */
653 0x2f, 0xfe, /* add.d [pc+],pc */
654 0xec, 0xff,
655 0xff, 0xff /* Replaced with offset to start of .plt. */
656};
657
bac23f82
HPN
658static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
659{
660 0x6f, 0xfe, /* move.d 0,$acr */
661 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
662 0x6f, 0xfa, /* move.d [$acr],$acr */
663 0xbf, 0x09, /* jump $acr */
664 0xb0, 0x05, /* nop */
665 0x3f, 0x7e, /* move 0,mof */
666 0, 0, 0, 0, /* Replaced with offset into relocation table. */
667 0xbf, 0x0e, /* ba start_of_plt0_entry */
668 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
669 0xb0, 0x05 /* nop */
670};
671
915e5146
HPN
672/* The first entry in a PIC procedure linkage table looks like this. */
673
674static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
675{
676 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
677 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
678 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
679 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
680};
681
bac23f82
HPN
682static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
683{
684 0x84, 0xe2, /* subq 4,$sp */
685 0x04, 0x01, /* addoq 4,$r0,$acr */
686 0x7e, 0x7a, /* move $mof,[$sp] */
687 0x3f, 0x7a, /* move [$acr],$mof */
688 0x04, 0xf2, /* addq 4,$acr */
689 0x6f, 0xfa, /* move.d [$acr],$acr */
690 0xbf, 0x09, /* jump $acr */
691 0xb0, 0x05, /* nop */
692 0, 0, /* Pad out to 26 bytes. */
693 0, 0, 0, 0,
694 0, 0, 0, 0
695};
696
915e5146
HPN
697/* Subsequent entries in a PIC procedure linkage table look like this. */
698
699static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
700{
701 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
702 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
703 0x30, 0x09, /* jump [...] */
704 0x3f, 0x7e, /* move [pc+],mof */
705 0, 0, 0, 0, /* Replaced with offset into relocation table. */
706 0x2f, 0xfe, /* add.d [pc+],pc */
707 0xec, 0xff, /* Replaced with offset to start of .plt. */
708 0xff, 0xff
709};
bac23f82
HPN
710
711static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
712{
713 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
714 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
715 0x6f, 0xfa, /* move.d [$acr],$acr */
716 0xbf, 0x09, /* jump $acr */
717 0xb0, 0x05, /* nop */
718 0x3f, 0x7e, /* move relocoffs,$mof */
719 0, 0, 0, 0, /* Replaced with offset into relocation table. */
720 0xbf, 0x0e, /* ba start_of_plt */
721 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
722 0xb0, 0x05 /* nop */
723};
915e5146
HPN
724\f
725/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
726 (and most other PIC/shlib stuff). Check that we don't drift away
727 without reason.
728
729 The CRIS linker, like the m68k and i386 linkers (and probably the rest
730 too) needs to keep track of the number of relocs that it decides to
731 copy in check_relocs for each symbol. This is so that it can discard
732 PC relative relocs if it doesn't need them when linking with
733 -Bsymbolic. We store the information in a field extending the regular
734 ELF linker hash table. */
735
736/* This structure keeps track of the number of PC relative relocs we have
737 copied for a given symbol. */
738
739struct elf_cris_pcrel_relocs_copied
740{
741 /* Next section. */
742 struct elf_cris_pcrel_relocs_copied *next;
743 /* A section in dynobj. */
744 asection *section;
745 /* Number of relocs copied in this section. */
746 bfd_size_type count;
747};
748
749/* CRIS ELF linker hash entry. */
750
751struct elf_cris_link_hash_entry
752{
753 struct elf_link_hash_entry root;
754
755 /* Number of PC relative relocs copied for this symbol. */
756 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
757
758 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
759 both a general GOT and a PLT-specific GOT entry for the same symbol,
760 when it is referenced both as a function and as a function pointer.
761
762 Number of GOTPLT references for a function. */
763 bfd_signed_vma gotplt_refcount;
764
765 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
766 (zero is never used as an index). FIXME: We should be able to fold
767 this with gotplt_refcount in a union, like the got and plt unions in
768 elf_link_hash_entry. */
769 bfd_size_type gotplt_offset;
770};
771
772/* CRIS ELF linker hash table. */
773
774struct elf_cris_link_hash_table
775{
776 struct elf_link_hash_table root;
777
778 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
779 since we try and avoid creating GOTPLT:s when there's already a GOT.
780 Instead, we keep and update the next available index here. */
781 bfd_size_type next_gotplt_entry;
782};
783
784/* Traverse a CRIS ELF linker hash table. */
785
786#define elf_cris_link_hash_traverse(table, func, info) \
787 (elf_link_hash_traverse \
788 (&(table)->root, \
b34976b6 789 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
915e5146
HPN
790 (info)))
791
792/* Get the CRIS ELF linker hash table from a link_info structure. */
793
794#define elf_cris_hash_table(p) \
795 ((struct elf_cris_link_hash_table *) (p)->hash)
796
797/* Create an entry in a CRIS ELF linker hash table. */
798
799static struct bfd_hash_entry *
800elf_cris_link_hash_newfunc (entry, table, string)
801 struct bfd_hash_entry *entry;
802 struct bfd_hash_table *table;
803 const char *string;
804{
805 struct elf_cris_link_hash_entry *ret =
806 (struct elf_cris_link_hash_entry *) entry;
807
808 /* Allocate the structure if it has not already been allocated by a
809 subclass. */
810 if (ret == (struct elf_cris_link_hash_entry *) NULL)
811 ret = ((struct elf_cris_link_hash_entry *)
812 bfd_hash_allocate (table,
813 sizeof (struct elf_cris_link_hash_entry)));
814 if (ret == (struct elf_cris_link_hash_entry *) NULL)
815 return (struct bfd_hash_entry *) ret;
816
817 /* Call the allocation method of the superclass. */
818 ret = ((struct elf_cris_link_hash_entry *)
819 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
820 table, string));
821 if (ret != (struct elf_cris_link_hash_entry *) NULL)
822 {
823 ret->pcrel_relocs_copied = NULL;
824 ret->gotplt_refcount = 0;
825 ret->gotplt_offset = 0;
826 }
827
828 return (struct bfd_hash_entry *) ret;
829}
830
831/* Create a CRIS ELF linker hash table. */
832
833static struct bfd_link_hash_table *
834elf_cris_link_hash_table_create (abfd)
835 bfd *abfd;
836{
837 struct elf_cris_link_hash_table *ret;
dc810e39 838 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
915e5146 839
e2d34d7d 840 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
915e5146
HPN
841 if (ret == (struct elf_cris_link_hash_table *) NULL)
842 return NULL;
843
66eb6687
AM
844 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
845 elf_cris_link_hash_newfunc,
846 sizeof (struct elf_cris_link_hash_entry)))
915e5146 847 {
e2d34d7d 848 free (ret);
915e5146
HPN
849 return NULL;
850 }
851
852 /* Initialize to skip over the first three entries in the gotplt; they
853 are used for run-time symbol evaluation. */
854 ret->next_gotplt_entry = 12;
855
856 return &ret->root.root;
857}
858\f
06c15ad7 859/* Perform a single relocation. By default we use the standard BFD
915e5146 860 routines, with a few tweaks. */
06c15ad7
HPN
861
862static bfd_reloc_status_type
863cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
864 relocation)
865 reloc_howto_type * howto;
866 bfd * input_bfd;
867 asection * input_section;
868 bfd_byte * contents;
869 Elf_Internal_Rela * rel;
870 bfd_vma relocation;
871{
915e5146
HPN
872 bfd_reloc_status_type r;
873
874 /* PC-relative relocations are relative to the position *after*
875 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
876 not a single byte, since PC must be 16-bit-aligned. */
877 switch (ELF32_R_TYPE (rel->r_info))
878 {
879 /* Check that the 16-bit GOT relocs are positive. */
880 case R_CRIS_16_GOTPLT:
881 case R_CRIS_16_GOT:
882 if ((bfd_signed_vma) relocation < 0)
883 return bfd_reloc_overflow;
884 break;
885
886 case R_CRIS_32_PLT_PCREL:
887 case R_CRIS_32_PCREL:
888 relocation -= 2;
889 /* Fall through. */
890 case R_CRIS_8_PCREL:
891 case R_CRIS_16_PCREL:
892 relocation -= 2;
893 break;
894
895 default:
896 break;
897 }
898
899 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
06c15ad7
HPN
900 contents, rel->r_offset,
901 relocation, rel->r_addend);
902 return r;
903}
904\f
905/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
906 copied, for further comments. */
907
b34976b6 908static bfd_boolean
06c15ad7
HPN
909cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
910 contents, relocs, local_syms, local_sections)
b34976b6
AM
911 bfd *output_bfd ATTRIBUTE_UNUSED;
912 struct bfd_link_info *info;
913 bfd *input_bfd;
914 asection *input_section;
915 bfd_byte *contents;
916 Elf_Internal_Rela *relocs;
917 Elf_Internal_Sym *local_syms;
918 asection **local_sections;
06c15ad7 919{
915e5146 920 bfd *dynobj;
b34976b6
AM
921 Elf_Internal_Shdr *symtab_hdr;
922 struct elf_link_hash_entry **sym_hashes;
915e5146
HPN
923 bfd_vma *local_got_offsets;
924 asection *sgot;
925 asection *splt;
926 asection *sreloc;
b34976b6
AM
927 Elf_Internal_Rela *rel;
928 Elf_Internal_Rela *relend;
06c15ad7 929
1049f94e 930 if (info->relocatable)
b34976b6 931 return TRUE;
f0fe0e16 932
915e5146
HPN
933 dynobj = elf_hash_table (info)->dynobj;
934 local_got_offsets = elf_local_got_offsets (input_bfd);
06c15ad7
HPN
935 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
936 sym_hashes = elf_sym_hashes (input_bfd);
937 relend = relocs + input_section->reloc_count;
938
915e5146
HPN
939 sgot = NULL;
940 splt = NULL;
941 sreloc = NULL;
942
943 if (dynobj != NULL)
944 {
945 splt = bfd_get_section_by_name (dynobj, ".plt");
946 sgot = bfd_get_section_by_name (dynobj, ".got");
947 }
948
06c15ad7
HPN
949 for (rel = relocs; rel < relend; rel ++)
950 {
b34976b6
AM
951 reloc_howto_type *howto;
952 unsigned long r_symndx;
953 Elf_Internal_Sym *sym;
954 asection *sec;
955 struct elf_link_hash_entry *h;
956 bfd_vma relocation;
957 bfd_reloc_status_type r;
958 const char *symname = NULL;
959 int r_type;
a7c10850 960
06c15ad7 961 r_type = ELF32_R_TYPE (rel->r_info);
a7c10850 962
06c15ad7
HPN
963 if ( r_type == R_CRIS_GNU_VTINHERIT
964 || r_type == R_CRIS_GNU_VTENTRY)
965 continue;
a7c10850 966
06c15ad7 967 /* This is a final link. */
f0fe0e16 968 r_symndx = ELF32_R_SYM (rel->r_info);
915e5146 969 howto = cris_elf_howto_table + r_type;
06c15ad7
HPN
970 h = NULL;
971 sym = NULL;
972 sec = NULL;
a7c10850 973
06c15ad7
HPN
974 if (r_symndx < symtab_hdr->sh_info)
975 {
976 sym = local_syms + r_symndx;
977 sec = local_sections [r_symndx];
8517fae7 978 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a7c10850 979
dc810e39
AM
980 symname = (bfd_elf_string_from_elf_section
981 (input_bfd, symtab_hdr->sh_link, sym->st_name));
982 if (symname == NULL)
983 symname = bfd_section_name (input_bfd, sec);
06c15ad7
HPN
984 }
985 else
986 {
560e09e9
NC
987 bfd_boolean warned;
988 bfd_boolean unresolved_reloc;
0a4787a0 989
b2a8e766
AM
990 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
991 r_symndx, symtab_hdr, sym_hashes,
992 h, sec, relocation,
993 unresolved_reloc, warned);
915e5146 994
560e09e9 995 if (unresolved_reloc
915e5146
HPN
996 /* Perhaps we should detect the cases that
997 sec->output_section is expected to be NULL like i386 and
998 m68k, but apparently (and according to elfxx-ia64.c) all
999 valid cases are where the symbol is defined in a shared
1000 object which we link dynamically against. This includes
1001 PLT relocs for which we've created a PLT entry and other
1002 relocs for which we're prepared to create dynamic
1003 relocations.
1004
1005 For now, new situations cause us to just err when
1006 sec->output_offset is NULL but the object with the symbol
1007 is *not* dynamically linked against. Thus this will
1008 automatically remind us so we can see if there are other
1009 valid cases we need to revisit. */
560e09e9
NC
1010 && (sec->owner->flags & DYNAMIC) != 0)
1011 relocation = 0;
1012
1013 else if (h->root.type == bfd_link_hash_defined
1014 || h->root.type == bfd_link_hash_defweak)
1015 {
1016 /* Here follow the cases where the relocation value must
1017 be zero (or when further handling is simplified when
1018 zero). I can't claim to understand the various
1019 conditions and they weren't described in the files
1020 where I copied them from (elf32-m68k.c and
1021 elf32-i386.c), but let's mention examples of where
1022 they happen. FIXME: Perhaps define and use a
1023 dynamic_symbol_p function like ia64.
1024
1025 - When creating a shared library, we can have an
1026 ordinary relocation for a symbol defined in a shared
1027 library (perhaps the one we create). We then make
1028 the relocation value zero, as the value seen now will
1029 be added into the relocation addend in this shared
1030 library, but must be handled only at dynamic-link
1031 time. FIXME: Not sure this example covers the
1032 h->elf_link_hash_flags test, though it's there in
1033 other targets. */
1034 if (info->shared
1035 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1036 || !h->def_regular)
560e09e9
NC
1037 && (input_section->flags & SEC_ALLOC) != 0
1038 && (r_type == R_CRIS_8
1039 || r_type == R_CRIS_16
1040 || r_type == R_CRIS_32
1041 || r_type == R_CRIS_8_PCREL
1042 || r_type == R_CRIS_16_PCREL
1043 || r_type == R_CRIS_32_PCREL))
915e5146 1044 relocation = 0;
560e09e9 1045 else if (unresolved_reloc)
915e5146 1046 {
560e09e9 1047 _bfd_error_handler
bac23f82 1048 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
d003868e
AM
1049 input_bfd,
1050 input_section,
8f615d07 1051 cris_elf_howto_table[r_type].name,
d003868e 1052 symname);
915e5146 1053 bfd_set_error (bfd_error_bad_value);
b34976b6 1054 return FALSE;
915e5146 1055 }
06c15ad7 1056 }
06c15ad7 1057 }
a7c10850 1058
915e5146 1059 switch (r_type)
06c15ad7 1060 {
915e5146
HPN
1061 case R_CRIS_16_GOTPLT:
1062 case R_CRIS_32_GOTPLT:
1063 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1064 but we require a PLT, and the PLT handling will take care of
1065 filling in the PLT-specific GOT entry. For the GOT offset,
1066 calculate it as we do when filling it in for the .got.plt
1067 section. If we don't have a PLT, punt to GOT handling. */
1068 if (h != NULL
1069 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
06c15ad7 1070 {
915e5146
HPN
1071 asection *sgotplt
1072 = bfd_get_section_by_name (dynobj, ".got.plt");
1073 bfd_vma got_offset;
a7c10850 1074
915e5146
HPN
1075 BFD_ASSERT (h->dynindx != -1);
1076 BFD_ASSERT (sgotplt != NULL);
a7c10850 1077
915e5146
HPN
1078 got_offset
1079 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
06c15ad7 1080
915e5146 1081 relocation = got_offset;
06c15ad7 1082 break;
915e5146 1083 }
06c15ad7 1084
4d96d128 1085 /* We didn't make a PLT entry for this symbol. Maybe everything is
915e5146
HPN
1086 folded into the GOT. Other than folding, this happens when
1087 statically linking PIC code, or when using -Bsymbolic. Check
1088 that we instead have a GOT entry as done for us by
1089 elf_cris_adjust_dynamic_symbol, and drop through into the
e4a2175c
HPN
1090 ordinary GOT cases. This must not happen for the
1091 executable, because any reference it does to a function
1092 that is satisfied by a DSO must generate a PLT. We assume
1093 these call-specific relocs don't address non-functions. */
1094 if (h != NULL
1095 && (h->got.offset == (bfd_vma) -1
1096 || (!info->shared
f5385ebf
AM
1097 && !(h->def_regular
1098 || (!h->def_dynamic
1099 && h->root.type == bfd_link_hash_undefweak)))))
915e5146
HPN
1100 {
1101 (*_bfd_error_handler)
e4a2175c 1102 ((h->got.offset == (bfd_vma) -1)
bac23f82 1103 ? _("%B, section %A: No PLT nor GOT for relocation %s"
d003868e 1104 " against symbol `%s'")
bac23f82 1105 : _("%B, section %A: No PLT for relocation %s"
d003868e
AM
1106 " against symbol `%s'"),
1107 input_bfd,
1108 input_section,
915e5146 1109 cris_elf_howto_table[r_type].name,
ada1953e
HPN
1110 (symname != NULL && symname[0] != '\0'
1111 ? symname : _("[whose name is lost]")));
915e5146
HPN
1112
1113 /* FIXME: Perhaps blaming input is not the right thing to
1114 do; this is probably an internal error. But it is true
1115 that we didn't like that particular input. */
1116 bfd_set_error (bfd_error_bad_value);
b34976b6 1117 return FALSE;
915e5146
HPN
1118 }
1119 /* Fall through. */
1120
1121 /* The size of the actual relocation is not used here; we only
1122 fill in the GOT table here. */
1123 case R_CRIS_16_GOT:
1124 case R_CRIS_32_GOT:
1125 {
1126 bfd_vma off;
1127
1128 /* Note that despite using RELA relocations, the .got contents
1129 is always filled in with the link-relative relocation
1130 value; the addend. */
1131
1132 if (h != NULL)
1133 {
1134 off = h->got.offset;
1135 BFD_ASSERT (off != (bfd_vma) -1);
1136
1137 if (!elf_hash_table (info)->dynamic_sections_created
205cfeb0 1138 || (! info->shared
f5385ebf 1139 && (h->def_regular
e4a2175c 1140 || h->type == STT_FUNC
f5385ebf 1141 || h->needs_plt))
915e5146
HPN
1142 || (info->shared
1143 && (info->symbolic || h->dynindx == -1)
f5385ebf 1144 && h->def_regular))
915e5146 1145 {
4d96d128 1146 /* This wasn't checked above for ! info->shared, but
e4a2175c
HPN
1147 must hold there if we get here; the symbol must
1148 be defined in the regular program or be undefweak
1149 or be a function or otherwise need a PLT. */
6849c52f
HPN
1150 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1151 || info->shared
f5385ebf 1152 || h->def_regular
e4a2175c 1153 || h->type == STT_FUNC
f5385ebf 1154 || h->needs_plt
6849c52f 1155 || h->root.type == bfd_link_hash_undefweak);
4d96d128 1156
915e5146 1157 /* This is actually a static link, or it is a
6849c52f
HPN
1158 -Bsymbolic link and the symbol is defined locally,
1159 or is undefweak, or the symbol was forced to be
1160 local because of a version file, or we're not
1161 creating a dynamic object. We must initialize this
1162 entry in the global offset table. Since the offset
1163 must always be a multiple of 4, we use the least
1164 significant bit to record whether we have
1165 initialized it already.
1166
1167 If this GOT entry should be runtime-initialized, we
1168 will create a .rela.got relocation entry to
1169 initialize the value. This is done in the
1170 finish_dynamic_symbol routine. */
915e5146
HPN
1171 if ((off & 1) != 0)
1172 off &= ~1;
1173 else
1174 {
1175 bfd_put_32 (output_bfd, relocation,
1176 sgot->contents + off);
1177 h->got.offset |= 1;
1178 }
1179 }
1180 }
1181 else
1182 {
1183 BFD_ASSERT (local_got_offsets != NULL
1184 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1185
1186 off = local_got_offsets[r_symndx];
1187
1188 /* The offset must always be a multiple of 4. We use
1189 the least significant bit to record whether we have
1190 already generated the necessary reloc. */
1191 if ((off & 1) != 0)
1192 off &= ~1;
1193 else
1194 {
1195 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1196
1197 if (info->shared)
1198 {
947216bf 1199 asection *s;
915e5146 1200 Elf_Internal_Rela outrel;
947216bf 1201 bfd_byte *loc;
915e5146 1202
947216bf
AM
1203 s = bfd_get_section_by_name (dynobj, ".rela.got");
1204 BFD_ASSERT (s != NULL);
915e5146
HPN
1205
1206 outrel.r_offset = (sgot->output_section->vma
1207 + sgot->output_offset
1208 + off);
1209 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1210 outrel.r_addend = relocation;
947216bf
AM
1211 loc = s->contents;
1212 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1213 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1214 }
1215
1216 local_got_offsets[r_symndx] |= 1;
1217 }
1218 }
1219
1220 relocation = sgot->output_offset + off;
1221 if (rel->r_addend != 0)
1222 {
1223 /* We can't do anything for a relocation which is against
1224 a symbol *plus offset*. GOT holds relocations for
1225 symbols. Make this an error; the compiler isn't
1226 allowed to pass us these kinds of things. */
1227 if (h == NULL)
1228 (*_bfd_error_handler)
bac23f82 1229 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1230 " against local symbol"),
1231 input_bfd,
1232 input_section,
915e5146 1233 cris_elf_howto_table[r_type].name,
d003868e 1234 rel->r_addend);
915e5146
HPN
1235 else
1236 (*_bfd_error_handler)
bac23f82 1237 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1238 " against symbol `%s'"),
1239 input_bfd,
1240 input_section,
915e5146
HPN
1241 cris_elf_howto_table[r_type].name,
1242 rel->r_addend,
d003868e 1243 symname[0] != '\0' ? symname : _("[whose name is lost]"));
915e5146
HPN
1244
1245 bfd_set_error (bfd_error_bad_value);
b34976b6 1246 return FALSE;
915e5146
HPN
1247 }
1248 }
1249 break;
06c15ad7 1250
915e5146 1251 case R_CRIS_32_GOTREL:
3dab95d3
HPN
1252 /* This relocation must only be performed against local symbols.
1253 It's also ok when we link a program and the symbol is either
1254 defined in an ordinary (non-DSO) object or is undefined weak. */
1255 if (h != NULL
1256 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1257 && !(!info->shared
f5385ebf
AM
1258 && (h->def_regular
1259 || (!h->def_dynamic
3dab95d3 1260 && h->root.type == bfd_link_hash_undefweak))))
915e5146
HPN
1261 {
1262 (*_bfd_error_handler)
bac23f82
HPN
1263 (_("%B, section %A: relocation %s is"
1264 " not allowed for global symbol: `%s'"),
d003868e
AM
1265 input_bfd,
1266 input_section,
915e5146 1267 cris_elf_howto_table[r_type].name,
d003868e 1268 symname);
915e5146 1269 bfd_set_error (bfd_error_bad_value);
b34976b6 1270 return FALSE;
06c15ad7
HPN
1271 }
1272
58255df3
HPN
1273 /* This can happen if we get a link error with the input ELF
1274 variant mismatching the output variant. Emit an error so
1275 it's noticed if it happens elsewhere. */
1276 if (sgot == NULL)
1277 {
1278 (*_bfd_error_handler)
bac23f82 1279 (_("%B, section %A: relocation %s with no GOT created"),
d003868e
AM
1280 input_bfd,
1281 input_section,
1282 cris_elf_howto_table[r_type].name);
58255df3 1283 bfd_set_error (bfd_error_bad_value);
b34976b6 1284 return FALSE;
58255df3
HPN
1285 }
1286
915e5146
HPN
1287 /* This relocation is like a PC-relative one, except the
1288 reference point is the location of GOT. Note that
1289 sgot->output_offset is not involved in this calculation. We
1290 always want the start of entire .got section, not the
1291 position after the reserved header. */
1292 relocation -= sgot->output_section->vma;
1293 break;
06c15ad7 1294
915e5146
HPN
1295 case R_CRIS_32_PLT_PCREL:
1296 /* Relocation is to the entry for this symbol in the
1297 procedure linkage table. */
06c15ad7 1298
915e5146
HPN
1299 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1300 without using the procedure linkage table. */
0a4787a0 1301 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1302 break;
1303
1304 if (h->plt.offset == (bfd_vma) -1
1305 || splt == NULL)
1306 {
1307 /* We didn't make a PLT entry for this symbol. This
1308 happens when statically linking PIC code, or when
1309 using -Bsymbolic. */
1310 break;
1311 }
1312
1313 relocation = (splt->output_section->vma
1314 + splt->output_offset
1315 + h->plt.offset);
1316 break;
1317
1318 case R_CRIS_32_PLT_GOTREL:
1319 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1320 start of the .got section. See also comment at
1321 R_CRIS_32_GOT. */
1322 relocation -= sgot->output_section->vma;
1323
1324 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1325 without using the procedure linkage table. */
0a4787a0 1326 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1327 break;
1328
1329 if (h->plt.offset == (bfd_vma) -1
1330 || splt == NULL)
1331 {
1332 /* We didn't make a PLT entry for this symbol. This
1333 happens when statically linking PIC code, or when
1334 using -Bsymbolic. */
1335 break;
1336 }
1337
1338 relocation = (splt->output_section->vma
1339 + splt->output_offset
1340 + h->plt.offset
1341 - sgot->output_section->vma);
1342 break;
1343
1344 case R_CRIS_8_PCREL:
1345 case R_CRIS_16_PCREL:
1346 case R_CRIS_32_PCREL:
1347 /* If the symbol was local, we need no shlib-specific handling. */
0a4787a0 1348 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1349 break;
1350
1351 /* Fall through. */
1352 case R_CRIS_8:
1353 case R_CRIS_16:
1354 case R_CRIS_32:
1355 if (info->shared
ec338859 1356 && r_symndx != 0
915e5146
HPN
1357 && (input_section->flags & SEC_ALLOC) != 0
1358 && ((r_type != R_CRIS_8_PCREL
1359 && r_type != R_CRIS_16_PCREL
1360 && r_type != R_CRIS_32_PCREL)
1361 || (!info->symbolic
f5385ebf 1362 || !h->def_regular)))
915e5146
HPN
1363 {
1364 Elf_Internal_Rela outrel;
947216bf 1365 bfd_byte *loc;
b34976b6 1366 bfd_boolean skip, relocate;
915e5146
HPN
1367
1368 /* When generating a shared object, these relocations
1369 are copied into the output file to be resolved at run
1370 time. */
1371
1372 if (sreloc == NULL)
1373 {
1374 const char *name;
1375
1376 name = (bfd_elf_string_from_elf_section
1377 (input_bfd,
1378 elf_elfheader (input_bfd)->e_shstrndx,
1379 elf_section_data (input_section)->rel_hdr.sh_name));
1380 if (name == NULL)
b34976b6 1381 return FALSE;
915e5146 1382
0112cd26 1383 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
915e5146
HPN
1384 && strcmp (bfd_get_section_name (input_bfd,
1385 input_section),
1386 name + 5) == 0);
1387
1388 sreloc = bfd_get_section_by_name (dynobj, name);
1389
1390 /* That section should have been created in
1391 cris_elf_check_relocs, but that function will not be
1392 called for objects which fail in
1393 cris_elf_merge_private_bfd_data. */
1394 if (sreloc == NULL)
1395 {
1396 (*_bfd_error_handler)
d003868e
AM
1397 (_("%B: Internal inconsistency; no relocation section %s"),
1398 input_bfd,
915e5146
HPN
1399 name);
1400
1401 bfd_set_error (bfd_error_bad_value);
b34976b6 1402 return FALSE;
915e5146
HPN
1403 }
1404 }
1405
b34976b6
AM
1406 skip = FALSE;
1407 relocate = FALSE;
915e5146 1408
c629eae0
JJ
1409 outrel.r_offset =
1410 _bfd_elf_section_offset (output_bfd, info, input_section,
1411 rel->r_offset);
1412 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 1413 skip = TRUE;
0bb2d96a 1414 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 1415 skip = TRUE, relocate = TRUE;
915e5146
HPN
1416 outrel.r_offset += (input_section->output_section->vma
1417 + input_section->output_offset);
1418
1419 if (skip)
0bb2d96a 1420 memset (&outrel, 0, sizeof outrel);
915e5146
HPN
1421 /* h->dynindx may be -1 if the symbol was marked to
1422 become local. */
1423 else if (h != NULL
1424 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1425 || !h->def_regular))
915e5146
HPN
1426 {
1427 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN
1428 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1429 outrel.r_addend = relocation + rel->r_addend;
1430 }
1431 else
1432 {
74541ad4
AM
1433 outrel.r_addend = relocation + rel->r_addend;
1434
915e5146
HPN
1435 if (r_type == R_CRIS_32)
1436 {
b34976b6 1437 relocate = TRUE;
915e5146 1438 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
915e5146
HPN
1439 }
1440 else
1441 {
1442 long indx;
1443
8517fae7 1444 if (bfd_is_abs_section (sec))
915e5146
HPN
1445 indx = 0;
1446 else if (sec == NULL || sec->owner == NULL)
1447 {
1448 bfd_set_error (bfd_error_bad_value);
b34976b6 1449 return FALSE;
915e5146
HPN
1450 }
1451 else
1452 {
1453 asection *osec;
1454
74541ad4
AM
1455 /* We are turning this relocation into one
1456 against a section symbol. It would be
1457 proper to subtract the symbol's value,
1458 osec->vma, from the emitted reloc addend,
1459 but ld.so expects buggy relocs. */
915e5146
HPN
1460 osec = sec->output_section;
1461 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
1462 if (indx == 0)
1463 {
1464 struct elf_cris_link_hash_table *htab;
1465 htab = elf_cris_hash_table (info);
1466 osec = htab->root.text_index_section;
1467 indx = elf_section_data (osec)->dynindx;
1468 }
1469 BFD_ASSERT (indx != 0);
915e5146
HPN
1470 }
1471
915e5146 1472 outrel.r_info = ELF32_R_INFO (indx, r_type);
915e5146
HPN
1473 }
1474 }
1475
947216bf
AM
1476 loc = sreloc->contents;
1477 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1478 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1479
1480 /* This reloc will be computed at runtime, so there's no
1481 need to do anything now, except for R_CRIS_32 relocations
1482 that have been turned into R_CRIS_RELATIVE. */
1483 if (!relocate)
1484 continue;
1485 }
1486
1487 break;
1488 }
1489
1490 r = cris_final_link_relocate (howto, input_bfd, input_section,
1491 contents, rel, relocation);
1492
1493 if (r != bfd_reloc_ok)
1494 {
1495 const char * msg = (const char *) NULL;
1496
1497 switch (r)
1498 {
1499 case bfd_reloc_overflow:
1500 r = info->callbacks->reloc_overflow
dfeffb9f
L
1501 (info, (h ? &h->root : NULL), symname, howto->name,
1502 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
915e5146
HPN
1503 break;
1504
1505 case bfd_reloc_undefined:
1506 r = info->callbacks->undefined_symbol
dc810e39 1507 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 1508 TRUE);
915e5146
HPN
1509 break;
1510
1511 case bfd_reloc_outofrange:
1512 msg = _("internal error: out of range error");
1513 break;
1514
1515 case bfd_reloc_notsupported:
1516 msg = _("internal error: unsupported relocation error");
1517 break;
1518
1519 case bfd_reloc_dangerous:
1520 msg = _("internal error: dangerous relocation");
1521 break;
1522
1523 default:
1524 msg = _("internal error: unknown error");
1525 break;
1526 }
1527
1528 if (msg)
1529 r = info->callbacks->warning
dc810e39 1530 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN
1531
1532 if (! r)
b34976b6 1533 return FALSE;
915e5146
HPN
1534 }
1535 }
1536
b34976b6 1537 return TRUE;
915e5146
HPN
1538}
1539\f
1540/* Finish up dynamic symbol handling. We set the contents of various
1541 dynamic sections here. */
1542
b34976b6 1543static bfd_boolean
915e5146
HPN
1544elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
1545 bfd *output_bfd;
1546 struct bfd_link_info *info;
1547 struct elf_link_hash_entry *h;
1548 Elf_Internal_Sym *sym;
1549{
1550 bfd *dynobj;
bac23f82
HPN
1551
1552 /* Where in the plt entry to put values. */
915e5146
HPN
1553 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
1554
bac23f82
HPN
1555 /* What offset to add to the distance to the first PLT entry for the
1556 value at plt_off3. */
1557 int plt_off3_value_bias = 4;
1558
1559 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
1560 for PIC and non-PIC for v32 and pre-v32). */
1561 int plt_stub_offset = 8;
1562 int plt_entry_size = PLT_ENTRY_SIZE;
1563 const bfd_byte *plt_entry = elf_cris_plt_entry;
1564 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
1565
1566 /* Adjust the various PLT entry offsets. */
1567 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1568 {
1569 plt_off2 = 14;
1570 plt_off3 = 20;
1571 plt_off3_value_bias = -2;
1572 plt_stub_offset = 12;
1573 plt_entry_size = PLT_ENTRY_SIZE_V32;
1574 plt_entry = elf_cris_plt_entry_v32;
1575 plt_pic_entry = elf_cris_pic_plt_entry_v32;
1576 }
1577
915e5146
HPN
1578 dynobj = elf_hash_table (info)->dynobj;
1579
1580 if (h->plt.offset != (bfd_vma) -1)
1581 {
1582 asection *splt;
1583 asection *sgotplt;
1584 asection *sgot;
1585 asection *srela;
1586 bfd_vma got_base;
1587
1588 bfd_vma gotplt_offset
1589 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1590 Elf_Internal_Rela rela;
947216bf 1591 bfd_byte *loc;
b34976b6 1592 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146
HPN
1593
1594 /* Get the index in the procedure linkage table which
1595 corresponds to this symbol. This is the index of this symbol
1596 in all the symbols for which we are making plt entries. The
1597 first entry in the procedure linkage table is reserved. */
1598 /* We have to count backwards here, and the result is only valid as
1599 an index into .got.plt and its relocations. FIXME: Constants... */
1600 bfd_vma gotplt_index = gotplt_offset/4 - 3;
1601
1602 /* Get the offset into the .got table of the entry that corresponds
1603 to this function. Note that we embed knowledge that "incoming"
1604 .got goes after .got.plt in the output without padding (pointer
1605 aligned). However, that knowledge is present in several other
c152c796 1606 places too. */
915e5146
HPN
1607 bfd_vma got_offset
1608 = (has_gotplt
1609 ? gotplt_offset
1610 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
1611
1612 /* This symbol has an entry in the procedure linkage table. Set it
1613 up. */
1614
1615 BFD_ASSERT (h->dynindx != -1);
1616
1617 splt = bfd_get_section_by_name (dynobj, ".plt");
1618 sgot = bfd_get_section_by_name (dynobj, ".got");
1619 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1620 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1621 BFD_ASSERT (splt != NULL && sgotplt != NULL
1622 && (! has_gotplt || srela != NULL));
1623
1624 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
1625
1626 /* Fill in the entry in the procedure linkage table. */
1627 if (! info->shared)
1628 {
bac23f82
HPN
1629 memcpy (splt->contents + h->plt.offset, plt_entry,
1630 plt_entry_size);
915e5146
HPN
1631
1632 /* We need to enter the absolute address of the GOT entry here. */
1633 bfd_put_32 (output_bfd, got_base + got_offset,
1634 splt->contents + h->plt.offset + plt_off1);
1635 }
1636 else
1637 {
bac23f82
HPN
1638 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
1639 plt_entry_size);
915e5146
HPN
1640 bfd_put_32 (output_bfd, got_offset,
1641 splt->contents + h->plt.offset + plt_off1);
1642 }
1643
1644 /* Fill in the plt entry and make a relocation, if this is a "real"
1645 PLT entry. */
1646 if (has_gotplt)
1647 {
bac23f82 1648 /* Fill in the offset to the reloc table. */
915e5146
HPN
1649 bfd_put_32 (output_bfd,
1650 gotplt_index * sizeof (Elf32_External_Rela),
1651 splt->contents + h->plt.offset + plt_off2);
1652
1653 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN
1654 bfd_put_32 (output_bfd,
1655 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN
1656 splt->contents + h->plt.offset + plt_off3);
1657
1658 /* Fill in the entry in the global offset table with the address of
1659 the relocating stub. */
1660 bfd_put_32 (output_bfd,
1661 (splt->output_section->vma
1662 + splt->output_offset
1663 + h->plt.offset
bac23f82 1664 + plt_stub_offset),
915e5146
HPN
1665 sgotplt->contents + got_offset);
1666
1667 /* Fill in the entry in the .rela.plt section. */
1668 rela.r_offset = (sgotplt->output_section->vma
1669 + sgotplt->output_offset
1670 + got_offset);
1671 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
1672 rela.r_addend = 0;
947216bf
AM
1673 loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
1674 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1675 }
1676
f5385ebf 1677 if (!h->def_regular)
915e5146
HPN
1678 {
1679 /* Mark the symbol as undefined, rather than as defined in
1680 the .plt section. Leave the value alone. */
1681 sym->st_shndx = SHN_UNDEF;
1682
1683 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
1684 know whether resetting the value is significant; if it really
1685 is, rather than a quirk or bug in the sparc port, then I
1686 believe we'd see this elsewhere. */
1687 /* If the symbol is weak, we do need to clear the value.
1688 Otherwise, the PLT entry would provide a definition for
1689 the symbol even if the symbol wasn't defined anywhere,
1690 and so the symbol would never be NULL. */
f5385ebf 1691 if (!h->ref_regular_nonweak)
915e5146
HPN
1692 sym->st_value = 0;
1693 }
1694 }
1695
e4a2175c
HPN
1696 /* For an ordinary program, we emit .got relocs only for symbols that
1697 are in the dynamic-symbols table and are either defined by the
1698 program or are undefined weak symbols, or are function symbols
1699 where we do not output a PLT: the PLT reloc was output above and all
1700 references to the function symbol are redirected to the PLT. */
4d96d128 1701 if (h->got.offset != (bfd_vma) -1
6849c52f
HPN
1702 && (info->shared
1703 || (h->dynindx != -1
e4a2175c 1704 && h->plt.offset == (bfd_vma) -1
f5385ebf 1705 && !h->def_regular
6849c52f 1706 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN
1707 {
1708 asection *sgot;
1709 asection *srela;
1710 Elf_Internal_Rela rela;
947216bf 1711 bfd_byte *loc;
dc810e39 1712 bfd_byte *where;
915e5146
HPN
1713
1714 /* This symbol has an entry in the global offset table. Set it up. */
1715
1716 sgot = bfd_get_section_by_name (dynobj, ".got");
1717 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1718 BFD_ASSERT (sgot != NULL && srela != NULL);
1719
1720 rela.r_offset = (sgot->output_section->vma
1721 + sgot->output_offset
dc810e39 1722 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN
1723
1724 /* If this is a static link, or it is a -Bsymbolic link and the
1725 symbol is defined locally or was forced to be local because
1726 of a version file, we just want to emit a RELATIVE reloc.
1727 The entry in the global offset table will already have been
1728 initialized in the relocate_section function. */
dc810e39 1729 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN
1730 if (! elf_hash_table (info)->dynamic_sections_created
1731 || (info->shared
1732 && (info->symbolic || h->dynindx == -1)
f5385ebf 1733 && h->def_regular))
915e5146
HPN
1734 {
1735 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 1736 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN
1737 }
1738 else
1739 {
dc810e39 1740 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN
1741 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
1742 rela.r_addend = 0;
1743 }
1744
947216bf
AM
1745 loc = srela->contents;
1746 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1747 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1748 }
1749
f5385ebf 1750 if (h->needs_copy)
915e5146
HPN
1751 {
1752 asection *s;
1753 Elf_Internal_Rela rela;
947216bf 1754 bfd_byte *loc;
915e5146
HPN
1755
1756 /* This symbol needs a copy reloc. Set it up. */
1757
1758 BFD_ASSERT (h->dynindx != -1
1759 && (h->root.type == bfd_link_hash_defined
1760 || h->root.type == bfd_link_hash_defweak));
1761
1762 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1763 ".rela.bss");
1764 BFD_ASSERT (s != NULL);
1765
1766 rela.r_offset = (h->root.u.def.value
1767 + h->root.u.def.section->output_section->vma
1768 + h->root.u.def.section->output_offset);
1769 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
1770 rela.r_addend = 0;
947216bf
AM
1771 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1772 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
1773 }
1774
1775 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1776 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 1777 || h == elf_hash_table (info)->hgot)
915e5146
HPN
1778 sym->st_shndx = SHN_ABS;
1779
b34976b6 1780 return TRUE;
915e5146
HPN
1781}
1782\f
1783/* Finish up the dynamic sections. */
1784
b34976b6 1785static bfd_boolean
915e5146
HPN
1786elf_cris_finish_dynamic_sections (output_bfd, info)
1787 bfd *output_bfd;
1788 struct bfd_link_info *info;
1789{
1790 bfd *dynobj;
1791 asection *sgot;
1792 asection *sdyn;
1793
1794 dynobj = elf_hash_table (info)->dynobj;
1795
1796 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
1797 BFD_ASSERT (sgot != NULL);
1798 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1799
1800 if (elf_hash_table (info)->dynamic_sections_created)
1801 {
1802 asection *splt;
1803 Elf32_External_Dyn *dyncon, *dynconend;
1804
1805 splt = bfd_get_section_by_name (dynobj, ".plt");
1806 BFD_ASSERT (splt != NULL && sdyn != NULL);
1807
1808 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 1809 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN
1810 for (; dyncon < dynconend; dyncon++)
1811 {
1812 Elf_Internal_Dyn dyn;
1813 asection *s;
1814
1815 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1816
1817 switch (dyn.d_tag)
1818 {
1819 default:
1820 break;
1821
1822 case DT_PLTGOT:
1823 s = bfd_get_section_by_name (output_bfd, ".got");
1824 BFD_ASSERT (s != NULL);
1825 dyn.d_un.d_ptr = s->vma;
1826 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1827 break;
1828
1829 case DT_JMPREL:
1830 /* Yes, we *can* have a .plt and no .plt.rela, for instance
1831 if all symbols are found in the .got (not .got.plt). */
1832 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1833 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
1834 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1835 break;
1836
1837 case DT_PLTRELSZ:
1838 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1839 if (s == NULL)
1840 dyn.d_un.d_val = 0;
915e5146 1841 else
eea6121a 1842 dyn.d_un.d_val = s->size;
915e5146
HPN
1843 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1844 break;
1845
1846 case DT_RELASZ:
1847 /* The procedure linkage table relocs (DT_JMPREL) should
1848 not be included in the overall relocs (DT_RELA).
1849 Therefore, we override the DT_RELASZ entry here to
1850 make it not include the JMPREL relocs. Since the
1851 linker script arranges for .rela.plt to follow all
1852 other relocation sections, we don't have to worry
1853 about changing the DT_RELA entry. */
1854 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1855 if (s != NULL)
eea6121a 1856 dyn.d_un.d_val -= s->size;
915e5146
HPN
1857 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1858 break;
1859 }
1860 }
1861
1862 /* Fill in the first entry in the procedure linkage table. */
eea6121a 1863 if (splt->size > 0)
915e5146 1864 {
bac23f82
HPN
1865 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1866 {
1867 if (info->shared)
1868 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
1869 PLT_ENTRY_SIZE_V32);
1870 else
1871 {
1872 memcpy (splt->contents, elf_cris_plt0_entry_v32,
1873 PLT_ENTRY_SIZE_V32);
1874 bfd_put_32 (output_bfd,
1875 sgot->output_section->vma
1876 + sgot->output_offset + 4,
1877 splt->contents + 4);
1878
1879 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1880 = PLT_ENTRY_SIZE_V32;
1881 }
1882 }
915e5146 1883 else
bac23f82
HPN
1884 {
1885 if (info->shared)
1886 memcpy (splt->contents, elf_cris_pic_plt0_entry,
1887 PLT_ENTRY_SIZE);
1888 else
1889 {
1890 memcpy (splt->contents, elf_cris_plt0_entry,
1891 PLT_ENTRY_SIZE);
1892 bfd_put_32 (output_bfd,
1893 sgot->output_section->vma
1894 + sgot->output_offset + 4,
1895 splt->contents + 6);
1896 bfd_put_32 (output_bfd,
1897 sgot->output_section->vma
1898 + sgot->output_offset + 8,
1899 splt->contents + 14);
1900
1901 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1902 = PLT_ENTRY_SIZE;
1903 }
915e5146
HPN
1904 }
1905 }
1906 }
1907
1908 /* Fill in the first three entries in the global offset table. */
eea6121a 1909 if (sgot->size > 0)
915e5146
HPN
1910 {
1911 if (sdyn == NULL)
1912 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1913 else
1914 bfd_put_32 (output_bfd,
1915 sdyn->output_section->vma + sdyn->output_offset,
1916 sgot->contents);
1917 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1918 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1919 }
1920
1921 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1922
b34976b6 1923 return TRUE;
06c15ad7
HPN
1924}
1925\f
1926/* Return the section that should be marked against GC for a given
1927 relocation. */
1928
1929static asection *
07adf181
AM
1930cris_elf_gc_mark_hook (asection *sec,
1931 struct bfd_link_info *info,
1932 Elf_Internal_Rela *rel,
1933 struct elf_link_hash_entry *h,
1934 Elf_Internal_Sym *sym)
06c15ad7
HPN
1935{
1936 if (h != NULL)
07adf181
AM
1937 switch (ELF32_R_TYPE (rel->r_info))
1938 {
1939 case R_CRIS_GNU_VTINHERIT:
1940 case R_CRIS_GNU_VTENTRY:
1941 return NULL;
1942 }
06c15ad7 1943
07adf181 1944 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN
1945}
1946
1947/* Update the got entry reference counts for the section being removed. */
1948
b34976b6 1949static bfd_boolean
07adf181
AM
1950cris_elf_gc_sweep_hook (bfd *abfd,
1951 struct bfd_link_info *info,
1952 asection *sec,
1953 const Elf_Internal_Rela *relocs)
06c15ad7 1954{
915e5146
HPN
1955 Elf_Internal_Shdr *symtab_hdr;
1956 struct elf_link_hash_entry **sym_hashes;
1957 bfd_signed_vma *local_got_refcounts;
1958 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN
1959 bfd *dynobj;
1960 asection *sgot;
1961 asection *srelgot;
1962
915e5146
HPN
1963 dynobj = elf_hash_table (info)->dynobj;
1964 if (dynobj == NULL)
b34976b6 1965 return TRUE;
915e5146 1966
babfd660
KH
1967 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1968 sym_hashes = elf_sym_hashes (abfd);
1969 local_got_refcounts = elf_local_got_refcounts (abfd);
1970
915e5146
HPN
1971 sgot = bfd_get_section_by_name (dynobj, ".got");
1972 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1973
1974 relend = relocs + sec->reloc_count;
1975 for (rel = relocs; rel < relend; rel++)
1976 {
babfd660 1977 unsigned long r_symndx;
3eb128b2
AM
1978 struct elf_link_hash_entry *h = NULL;
1979
1980 r_symndx = ELF32_R_SYM (rel->r_info);
1981 if (r_symndx >= symtab_hdr->sh_info)
1982 {
1983 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1984 while (h->root.type == bfd_link_hash_indirect
1985 || h->root.type == bfd_link_hash_warning)
1986 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1987 }
babfd660 1988
915e5146
HPN
1989 switch (ELF32_R_TYPE (rel->r_info))
1990 {
1991 case R_CRIS_16_GOT:
1992 case R_CRIS_32_GOT:
3eb128b2 1993 if (h != NULL)
915e5146 1994 {
915e5146
HPN
1995 if (h->got.refcount > 0)
1996 {
1997 --h->got.refcount;
1998 if (h->got.refcount == 0)
1999 {
2000 /* We don't need the .got entry any more. */
eea6121a
AM
2001 sgot->size -= 4;
2002 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2003 }
2004 }
2005 break;
2006 }
2007
2008 local_got_reloc:
2009 if (local_got_refcounts != NULL)
2010 {
2011 if (local_got_refcounts[r_symndx] > 0)
2012 {
2013 --local_got_refcounts[r_symndx];
2014 if (local_got_refcounts[r_symndx] == 0)
2015 {
2016 /* We don't need the .got entry any more. */
eea6121a 2017 sgot->size -= 4;
915e5146 2018 if (info->shared)
eea6121a 2019 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2020 }
2021 }
2022 }
2023 break;
2024
2025 case R_CRIS_16_GOTPLT:
2026 case R_CRIS_32_GOTPLT:
2027 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2028 if (h == NULL)
915e5146 2029 goto local_got_reloc;
e4a2175c 2030 /* Fall through. */
3eb128b2 2031
915e5146
HPN
2032 case R_CRIS_32_PLT_GOTREL:
2033 /* FIXME: We don't garbage-collect away the .got section. */
2034 if (local_got_refcounts != NULL)
2035 local_got_refcounts[-1]--;
2036 /* Fall through. */
3eb128b2 2037
915e5146
HPN
2038 case R_CRIS_8_PCREL:
2039 case R_CRIS_16_PCREL:
2040 case R_CRIS_32_PCREL:
2041 case R_CRIS_32_PLT_PCREL:
3eb128b2 2042 if (h != NULL)
915e5146 2043 {
0a4787a0
HPN
2044 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2045 && h->plt.refcount > 0)
915e5146
HPN
2046 --h->plt.refcount;
2047 }
2048 break;
2049
2050 default:
2051 break;
2052 }
2053 }
2054
b34976b6 2055 return TRUE;
06c15ad7
HPN
2056}
2057
915e5146
HPN
2058/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2059 entry but we found we will not create any. Called when we find we will
4d96d128
HPN
2060 not have any PLT for this symbol, by for example
2061 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2062 or elf_cris_size_dynamic_sections if no dynamic sections will be
2063 created (we're only linking static objects). */
915e5146 2064
b34976b6 2065static bfd_boolean
915e5146
HPN
2066elf_cris_adjust_gotplt_to_got (h, p)
2067 struct elf_cris_link_hash_entry *h;
2068 PTR p;
2069{
2070 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2071
e92d460e
AM
2072 if (h->root.root.type == bfd_link_hash_warning)
2073 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2074
915e5146
HPN
2075 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2076 if (h->gotplt_refcount <= 0)
b34976b6 2077 return TRUE;
915e5146
HPN
2078
2079 if (h->root.got.refcount > 0)
2080 {
2081 /* There's a GOT entry for this symbol. Just adjust the refcount.
2082 Probably not necessary at this stage, but keeping it accurate
2083 helps avoiding surprises later. */
2084 h->root.got.refcount += h->gotplt_refcount;
5e0f5ae3 2085 h->gotplt_refcount = 0;
915e5146
HPN
2086 }
2087 else
2088 {
4d96d128 2089 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM
2090 bfd *dynobj = elf_hash_table (info)->dynobj;
2091 asection *sgot;
2092 asection *srelgot;
2093
2094 BFD_ASSERT (dynobj != NULL);
2095 sgot = bfd_get_section_by_name (dynobj, ".got");
2096 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146
HPN
2097
2098 /* Put an accurate refcount there. */
2099 h->root.got.refcount = h->gotplt_refcount;
2100
5e0f5ae3 2101 h->gotplt_refcount = 0;
915e5146 2102
44aa49bb
HPN
2103 /* We always have a .got and a .rela.got section if there were
2104 GOTPLT relocs in input. */
2105 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN
2106
2107 /* Allocate space in the .got section. */
eea6121a 2108 sgot->size += 4;
915e5146
HPN
2109
2110 /* Allocate relocation space. */
eea6121a 2111 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2112 }
2113
b34976b6 2114 return TRUE;
915e5146
HPN
2115}
2116
2117/* Try to fold PLT entries with GOT entries. There are two cases when we
2118 want to do this:
2119
2120 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN
2121 references, and this is not the executable. We don't have to
2122 generate a PLT at all.
915e5146 2123
e4a2175c
HPN
2124 - When there are both (ordinary) PLT references and GOT references,
2125 and this isn't the executable.
915e5146 2126 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN
2127 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2128 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN
2129
2130 Though the latter case is handled when room for the PLT is allocated,
2131 not here.
2132
e4a2175c
HPN
2133 By folding into the GOT, we may need a round-trip to a PLT in the
2134 executable for calls, a loss in performance. Still, losing a
2135 reloc is a win in size and at least in start-up time.
2136
915e5146
HPN
2137 Note that this function is called before symbols are forced local by
2138 version scripts. The differing cases are handled by
2139 elf_cris_hide_symbol. */
2140
b34976b6 2141static bfd_boolean
915e5146
HPN
2142elf_cris_try_fold_plt_to_got (h, p)
2143 struct elf_cris_link_hash_entry *h;
2144 PTR p;
2145{
2146 struct bfd_link_info *info = (struct bfd_link_info *) p;
2147
2148 /* If there are no GOT references for this symbol, we can't fold any
2149 other reference so there's nothing to do. Likewise if there are no
2150 PLT references; GOTPLT references included. */
2151 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2152 return TRUE;
915e5146
HPN
2153
2154 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2155 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2156
2157 if (h->gotplt_refcount == h->root.plt.refcount)
2158 {
4d96d128 2159 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN
2160 references. Convert PLT to GOT references. */
2161 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2162 return FALSE;
915e5146
HPN
2163
2164 /* Clear the PLT references, so no PLT will be created. */
2165 h->root.plt.offset = (bfd_vma) -1;
2166 }
2167
b34976b6 2168 return TRUE;
915e5146
HPN
2169}
2170
2171/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2172 to use a GOT entry (and create one) rather than requiring a GOTPLT
2173 entry. */
2174
2175static void
e5094212 2176elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN
2177 struct bfd_link_info *info;
2178 struct elf_link_hash_entry *h;
b34976b6 2179 bfd_boolean force_local;
915e5146
HPN
2180{
2181 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2182
e5094212 2183 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN
2184}
2185
2186/* Adjust a symbol defined by a dynamic object and referenced by a
2187 regular object. The current definition is in some section of the
2188 dynamic object, but we're not including those sections. We have to
2189 change the definition to something the rest of the link can
2190 understand. */
2191
b34976b6 2192static bfd_boolean
915e5146
HPN
2193elf_cris_adjust_dynamic_symbol (info, h)
2194 struct bfd_link_info *info;
2195 struct elf_link_hash_entry *h;
2196{
2197 bfd *dynobj;
2198 asection *s;
2199 unsigned int power_of_two;
bac23f82 2200 bfd_size_type plt_entry_size;
915e5146
HPN
2201
2202 dynobj = elf_hash_table (info)->dynobj;
2203
2204 /* Make sure we know what is going on here. */
2205 BFD_ASSERT (dynobj != NULL
f5385ebf 2206 && (h->needs_plt
f6e332e6 2207 || h->u.weakdef != NULL
f5385ebf
AM
2208 || (h->def_dynamic
2209 && h->ref_regular
2210 && !h->def_regular)));
915e5146 2211
bac23f82
HPN
2212 plt_entry_size
2213 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2214 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2215
915e5146
HPN
2216 /* If this is a function, put it in the procedure linkage table. We
2217 will fill in the contents of the procedure linkage table later,
2218 when we know the address of the .got section. */
2219 if (h->type == STT_FUNC
f5385ebf 2220 || h->needs_plt)
915e5146 2221 {
6849c52f
HPN
2222 /* If we link a program (not a DSO), we'll get rid of unnecessary
2223 PLT entries; we point to the actual symbols -- even for pic
2224 relocs, because a program built with -fpic should have the same
2225 result as one built without -fpic, specifically considering weak
2226 symbols.
2227 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2228 if (! info->shared
f5385ebf 2229 && !h->def_dynamic)
915e5146
HPN
2230 {
2231 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN
2232 but the symbol was not defined by a dynamic object. In such
2233 a case, we don't actually need to build a procedure linkage
2234 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2235 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM
2236 BFD_ASSERT (h->needs_plt);
2237 h->needs_plt = 0;
915e5146 2238 h->plt.offset = (bfd_vma) -1;
915e5146
HPN
2239 return
2240 elf_cris_adjust_gotplt_to_got ((struct
2241 elf_cris_link_hash_entry *) h,
2242 info);
2243 }
2244
e4a2175c
HPN
2245 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2246 where a pointer-equivalent symbol was unimportant (i.e. more
2247 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2248 of the PLT. We can't for the executable, because the GOT
2249 entries will point to the PLT there (and be constant). */
2250 if (info->shared
2251 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2252 h, info))
b34976b6 2253 return FALSE;
915e5146
HPN
2254
2255 /* GC or folding may have rendered this entry unused. */
2256 if (h->plt.refcount <= 0)
2257 {
f5385ebf 2258 h->needs_plt = 0;
915e5146 2259 h->plt.offset = (bfd_vma) -1;
b34976b6 2260 return TRUE;
915e5146
HPN
2261 }
2262
2263 /* Make sure this symbol is output as a dynamic symbol. */
2264 if (h->dynindx == -1)
2265 {
c152c796 2266 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2267 return FALSE;
915e5146
HPN
2268 }
2269
2270 s = bfd_get_section_by_name (dynobj, ".plt");
2271 BFD_ASSERT (s != NULL);
2272
2273 /* If this is the first .plt entry, make room for the special
2274 first entry. */
eea6121a 2275 if (s->size == 0)
bac23f82 2276 s->size += plt_entry_size;
915e5146
HPN
2277
2278 /* If this symbol is not defined in a regular file, and we are
2279 not generating a shared library, then set the symbol to this
6849c52f 2280 location in the .plt. */
915e5146 2281 if (!info->shared
f5385ebf 2282 && !h->def_regular)
915e5146
HPN
2283 {
2284 h->root.u.def.section = s;
eea6121a 2285 h->root.u.def.value = s->size;
915e5146
HPN
2286 }
2287
4d96d128
HPN
2288 /* If there's already a GOT entry, use that, not a .got.plt. A
2289 GOT field still has a reference count when we get here; it's
e4a2175c
HPN
2290 not yet changed to an offset. We can't do this for an
2291 executable, because then the reloc associated with the PLT
2292 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2293 this to elf_cris_try_fold_plt_to_got. */
2294 if (info->shared && h->got.refcount > 0)
915e5146
HPN
2295 {
2296 h->got.refcount += h->plt.refcount;
2297
2298 /* Mark the PLT offset to use the GOT entry by setting the low
2299 bit in the plt offset; it is always a multiple of
bac23f82
HPN
2300 plt_entry_size (which is at least a multiple of 2). */
2301 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN
2302
2303 /* Change the PLT refcount to an offset. */
eea6121a 2304 h->plt.offset = s->size;
915e5146
HPN
2305
2306 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2307 that the got entry should be used instead. */
2308 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2309 h)->gotplt_offset == 0);
2310
2311 /* Make room for this entry. */
bac23f82 2312 s->size += plt_entry_size;
915e5146 2313
b34976b6 2314 return TRUE;
915e5146
HPN
2315 }
2316
2317 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2318 h->plt.offset = s->size;
915e5146
HPN
2319
2320 /* Make room for this entry. */
bac23f82 2321 s->size += plt_entry_size;
915e5146
HPN
2322
2323 /* We also need to make an entry in the .got.plt section, which
2324 will be placed in the .got section by the linker script. */
2325 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2326 = elf_cris_hash_table (info)->next_gotplt_entry;
2327 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2328
2329 s = bfd_get_section_by_name (dynobj, ".got.plt");
2330 BFD_ASSERT (s != NULL);
eea6121a 2331 s->size += 4;
915e5146
HPN
2332
2333 /* We also need to make an entry in the .rela.plt section. */
2334
2335 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2336 BFD_ASSERT (s != NULL);
eea6121a 2337 s->size += sizeof (Elf32_External_Rela);
915e5146 2338
b34976b6 2339 return TRUE;
915e5146
HPN
2340 }
2341
2342 /* Reinitialize the plt offset now that it is not used as a reference
2343 count any more. */
2344 h->plt.offset = (bfd_vma) -1;
2345
2346 /* If this is a weak symbol, and there is a real definition, the
2347 processor independent code will have arranged for us to see the
2348 real definition first, and we can just use the same value. */
f6e332e6 2349 if (h->u.weakdef != NULL)
915e5146 2350 {
f6e332e6
AM
2351 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2352 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2353 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2354 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 2355 return TRUE;
915e5146
HPN
2356 }
2357
2358 /* This is a reference to a symbol defined by a dynamic object which
2359 is not a function. */
2360
2361 /* If we are creating a shared library, we must presume that the
2362 only references to the symbol are via the global offset table.
2363 For such cases we need not do anything here; the relocations will
2364 be handled correctly by relocate_section. */
2365 if (info->shared)
b34976b6 2366 return TRUE;
915e5146
HPN
2367
2368 /* If there are no references to this symbol that do not use the
2369 GOT, we don't need to generate a copy reloc. */
f5385ebf 2370 if (!h->non_got_ref)
b34976b6 2371 return TRUE;
915e5146 2372
909272ee
AM
2373 if (h->size == 0)
2374 {
2375 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2376 h->root.root.string);
2377 return TRUE;
2378 }
2379
915e5146
HPN
2380 /* We must allocate the symbol in our .dynbss section, which will
2381 become part of the .bss section of the executable. There will be
2382 an entry for this symbol in the .dynsym section. The dynamic
2383 object will contain position independent code, so all references
2384 from the dynamic object to this symbol will go through the global
2385 offset table. The dynamic linker will use the .dynsym entry to
2386 determine the address it must put in the global offset table, so
2387 both the dynamic object and the regular object will refer to the
2388 same memory location for the variable. */
2389
2390 s = bfd_get_section_by_name (dynobj, ".dynbss");
2391 BFD_ASSERT (s != NULL);
2392
2393 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2394 copy the initial value out of the dynamic object and into the
2395 runtime process image. We need to remember the offset into the
2396 .rela.bss section we are going to use. */
2397 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2398 {
2399 asection *srel;
2400
2401 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2402 BFD_ASSERT (srel != NULL);
eea6121a 2403 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 2404 h->needs_copy = 1;
915e5146
HPN
2405 }
2406
2407 /* Historic precedent: m68k and i386 allow max 8-byte alignment for the
2408 thing to copy; so do we. */
2409
2410 /* We need to figure out the alignment required for this symbol. I
2411 have no idea how ELF linkers handle this. */
2412 power_of_two = bfd_log2 (h->size);
2413 if (power_of_two > 3)
2414 power_of_two = 3;
2415
2416 /* Apply the required alignment. */
eea6121a 2417 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
915e5146
HPN
2418 if (power_of_two > bfd_get_section_alignment (dynobj, s))
2419 {
2420 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
b34976b6 2421 return FALSE;
915e5146
HPN
2422 }
2423
2424 /* Define the symbol as being at this point in the section. */
2425 h->root.u.def.section = s;
eea6121a 2426 h->root.u.def.value = s->size;
915e5146
HPN
2427
2428 /* Increment the section size to make room for the symbol. */
eea6121a 2429 s->size += h->size;
915e5146 2430
b34976b6 2431 return TRUE;
915e5146
HPN
2432}
2433
2434/* Look through the relocs for a section during the first phase. */
a7c10850 2435
b34976b6 2436static bfd_boolean
06c15ad7
HPN
2437cris_elf_check_relocs (abfd, info, sec, relocs)
2438 bfd *abfd;
2439 struct bfd_link_info *info;
2440 asection *sec;
2441 const Elf_Internal_Rela *relocs;
2442{
915e5146 2443 bfd *dynobj;
06c15ad7
HPN
2444 Elf_Internal_Shdr *symtab_hdr;
2445 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
915e5146 2446 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN
2447 const Elf_Internal_Rela *rel;
2448 const Elf_Internal_Rela *rel_end;
915e5146
HPN
2449 asection *sgot;
2450 asection *srelgot;
2451 asection *sreloc;
a7c10850 2452
1049f94e 2453 if (info->relocatable)
b34976b6 2454 return TRUE;
a7c10850 2455
915e5146 2456 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN
2457 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2458 sym_hashes = elf_sym_hashes (abfd);
a7c10850 2459 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
915e5146
HPN
2460 local_got_refcounts = elf_local_got_refcounts (abfd);
2461
2462 sgot = NULL;
2463 srelgot = NULL;
2464 sreloc = NULL;
2465
06c15ad7
HPN
2466 if (!elf_bad_symtab (abfd))
2467 sym_hashes_end -= symtab_hdr->sh_info;
a7c10850 2468
06c15ad7
HPN
2469 rel_end = relocs + sec->reloc_count;
2470 for (rel = relocs; rel < rel_end; rel++)
2471 {
2472 struct elf_link_hash_entry *h;
2473 unsigned long r_symndx;
915e5146 2474 enum elf_cris_reloc_type r_type;
a7c10850 2475
06c15ad7
HPN
2476 r_symndx = ELF32_R_SYM (rel->r_info);
2477 if (r_symndx < symtab_hdr->sh_info)
2478 h = NULL;
2479 else
973a3492
L
2480 {
2481 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2482 while (h->root.type == bfd_link_hash_indirect
2483 || h->root.type == bfd_link_hash_warning)
2484 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2485 }
a7c10850 2486
915e5146
HPN
2487 r_type = ELF32_R_TYPE (rel->r_info);
2488
2489 /* Some relocs require linker-created sections; we need to hang them
2490 on the first input bfd we found that contained dynamic relocs. */
2491 switch (r_type)
2492 {
2493 case R_CRIS_16_GOT:
2494 case R_CRIS_32_GOT:
2495 case R_CRIS_32_GOTREL:
2496 case R_CRIS_32_PLT_GOTREL:
2497 case R_CRIS_32_PLT_PCREL:
2498 case R_CRIS_16_GOTPLT:
2499 case R_CRIS_32_GOTPLT:
2500 if (dynobj == NULL)
2501 {
2502 elf_hash_table (info)->dynobj = dynobj = abfd;
2503
bac23f82
HPN
2504 /* We could handle this if we can get a handle on the
2505 output bfd in elf_cris_adjust_dynamic_symbol. Failing
2506 that, we must insist on dynobj being a specific mach. */
2507 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
2508 {
2509 (*_bfd_error_handler)
2510 (_("%B, section %A:\n v10/v32 compatible object %s"
2511 " must not contain a PIC relocation"),
2512 abfd, sec);
2513 return FALSE;
2514 }
2515
915e5146
HPN
2516 /* Create the .got section, so we can assume it's always
2517 present whenever there's a dynobj. */
2518 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 2519 return FALSE;
915e5146
HPN
2520 }
2521 break;
2522
2523 default:
2524 break;
2525 }
2526
2527 /* Some relocs require a global offset table (but perhaps not a
2528 specific GOT entry). */
4d96d128 2529 switch (r_type)
915e5146 2530 {
44aa49bb
HPN
2531 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
2532 entry only for local symbols. Unfortunately, we don't know
2533 until later on if there's a version script that forces the
2534 symbol local. We must have the .rela.got section in place
2535 before we know if the symbol looks global now, so we need
2536 to treat the reloc just like for R_CRIS_16_GOT and
2537 R_CRIS_32_GOT. */
2538 case R_CRIS_16_GOTPLT:
2539 case R_CRIS_32_GOTPLT:
915e5146
HPN
2540 case R_CRIS_16_GOT:
2541 case R_CRIS_32_GOT:
44aa49bb
HPN
2542 if (srelgot == NULL
2543 && (h != NULL || info->shared))
2544 {
2545 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2546 if (srelgot == NULL)
2547 {
3496cb2a
L
2548 srelgot = bfd_make_section_with_flags (dynobj,
2549 ".rela.got",
2550 (SEC_ALLOC
2551 | SEC_LOAD
2552 | SEC_HAS_CONTENTS
2553 | SEC_IN_MEMORY
2554 | SEC_LINKER_CREATED
2555 | SEC_READONLY));
44aa49bb 2556 if (srelgot == NULL
44aa49bb 2557 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 2558 return FALSE;
44aa49bb
HPN
2559 }
2560 }
2561 /* Fall through. */
2562
915e5146
HPN
2563 case R_CRIS_32_GOTREL:
2564 case R_CRIS_32_PLT_GOTREL:
2565 if (sgot == NULL)
2566 sgot = bfd_get_section_by_name (dynobj, ".got");
2567
2568 if (local_got_refcounts == NULL)
2569 {
dc810e39 2570 bfd_size_type amt;
915e5146
HPN
2571
2572 /* We use index local_got_refcounts[-1] to count all
2573 GOT-relative relocations that do not have explicit
2574 GOT entries. */
dc810e39
AM
2575 amt = symtab_hdr->sh_info + 1;
2576 amt *= sizeof (bfd_signed_vma);
51b64d56 2577 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
915e5146 2578 if (local_got_refcounts == NULL)
b34976b6 2579 return FALSE;
915e5146
HPN
2580
2581 local_got_refcounts++;
2582 elf_local_got_refcounts (abfd) = local_got_refcounts;
2583 }
2584 break;
2585
2586 default:
2587 break;
2588 }
2589
4d96d128 2590 switch (r_type)
06c15ad7 2591 {
915e5146
HPN
2592 case R_CRIS_16_GOTPLT:
2593 case R_CRIS_32_GOTPLT:
2594 /* Mark that we need a GOT entry if the PLT entry (and its GOT
2595 entry) is eliminated. We can only do this for a non-local
2596 symbol. */
2597 if (h != NULL)
2598 {
2599 ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
2600 goto handle_gotplt_reloc;
2601 }
2602 /* If h is NULL then this is a local symbol, and we must make a
2603 GOT entry for it, so handle it like a GOT reloc. */
2604 /* Fall through. */
2605
2606 case R_CRIS_16_GOT:
2607 case R_CRIS_32_GOT:
2608 /* This symbol requires a global offset table entry. */
915e5146
HPN
2609 if (h != NULL)
2610 {
51b64d56 2611 if (h->got.refcount == 0)
915e5146 2612 {
915e5146
HPN
2613 /* Make sure this symbol is output as a dynamic symbol. */
2614 if (h->dynindx == -1)
2615 {
c152c796 2616 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2617 return FALSE;
915e5146
HPN
2618 }
2619
2620 /* Allocate space in the .got section. */
eea6121a 2621 sgot->size += 4;
915e5146 2622 /* Allocate relocation space. */
eea6121a 2623 srelgot->size += sizeof (Elf32_External_Rela);
915e5146 2624 }
51b64d56 2625 h->got.refcount++;
915e5146
HPN
2626 }
2627 else
2628 {
2629 /* This is a global offset table entry for a local symbol. */
51b64d56 2630 if (local_got_refcounts[r_symndx] == 0)
915e5146 2631 {
eea6121a 2632 sgot->size += 4;
915e5146
HPN
2633 if (info->shared)
2634 {
2635 /* If we are generating a shared object, we need to
2636 output a R_CRIS_RELATIVE reloc so that the dynamic
2637 linker can adjust this GOT entry. */
eea6121a 2638 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2639 }
2640 }
51b64d56 2641 local_got_refcounts[r_symndx]++;
915e5146
HPN
2642 }
2643 break;
2644
2645 case R_CRIS_32_GOTREL:
2646 /* This reference requires a global offset table.
2647 FIXME: The actual refcount isn't used currently; the .got
2648 section can't be removed if there were any references in the
2649 input. */
2650 local_got_refcounts[-1]++;
2651 break;
2652
2653 handle_gotplt_reloc:
2654
2655 case R_CRIS_32_PLT_GOTREL:
2656 /* This reference requires a global offset table. */
2657 local_got_refcounts[-1]++;
2658 /* Fall through. */
2659
2660 case R_CRIS_32_PLT_PCREL:
2661 /* This symbol requires a procedure linkage table entry. We
2662 actually build the entry in adjust_dynamic_symbol,
2663 because this might be a case of linking PIC code which is
2664 never referenced by a dynamic object, in which case we
2665 don't need to generate a procedure linkage table entry
2666 after all. */
2667
ada1953e
HPN
2668 /* Beware: if we'd check for visibility of the symbol here
2669 (and not marking the need for a PLT when non-visible), we'd
2670 get into trouble with keeping handling consistent with
2671 regards to relocs found before definition and GOTPLT
2672 handling. Eliminable PLT entries will be dealt with later
2673 anyway. */
2674 if (h == NULL)
915e5146
HPN
2675 continue;
2676
f5385ebf 2677 h->needs_plt = 1;
51b64d56 2678 h->plt.refcount++;
915e5146
HPN
2679 break;
2680
2681 case R_CRIS_8:
2682 case R_CRIS_16:
2683 case R_CRIS_32:
2684 /* Let's help debug shared library creation. Any of these
2685 relocs can be used in shared libs, but pages containing them
2686 cannot be shared. Don't warn for sections we don't care
2687 about, such as debug sections or non-constant sections. We
2688 can't help tables of (global) function pointers, for example,
2689 though they must be emitted in a data section to avoid having
2690 impure text sections. */
2691 if (info->shared
2692 && (sec->flags & SEC_ALLOC) != 0
2693 && (sec->flags & SEC_READONLY) != 0)
2694 {
2695 /* FIXME: How do we make this optionally a warning only? */
8f615d07 2696 (*_bfd_error_handler)
bac23f82
HPN
2697 (_("%B, section %A:\n relocation %s should not"
2698 " be used in a shared object; recompile with -fPIC"),
d003868e
AM
2699 abfd,
2700 sec,
8f615d07 2701 cris_elf_howto_table[r_type].name);
915e5146
HPN
2702 }
2703 /* Fall through. */
2704
2705 case R_CRIS_8_PCREL:
2706 case R_CRIS_16_PCREL:
2707 case R_CRIS_32_PCREL:
2708 if (h != NULL)
2709 {
f5385ebf 2710 h->non_got_ref = 1;
915e5146
HPN
2711
2712 /* Make sure a plt entry is created for this symbol if it
2713 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN
2714 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2715 h->plt.refcount++;
915e5146
HPN
2716 }
2717
2718 /* If we are creating a shared library and this is not a local
2719 symbol, we need to copy the reloc into the shared library.
2720 However when linking with -Bsymbolic and this is a global
2721 symbol which is defined in an object we are including in the
2722 link (i.e., DEF_REGULAR is set), then we can resolve the
2723 reloc directly. At this point we have not seen all the input
2724 files, so it is possible that DEF_REGULAR is not set now but
2725 will be set later (it is never cleared). In case of a weak
2726 definition, DEF_REGULAR may be cleared later by a strong
2727 definition in a shared library. We account for that
2728 possibility below by storing information in the relocs_copied
2729 field of the hash table entry. A similar situation occurs
2730 when creating shared libraries and symbol visibility changes
2731 render the symbol local. */
2732
2733 /* No need to do anything if we're not creating a shared object. */
2734 if (! info->shared)
2735 break;
2736
2737 /* We don't need to handle relocs into sections not going into
2738 the "real" output. */
2739 if ((sec->flags & SEC_ALLOC) == 0)
2740 break;
2741
2742 /* We can only eliminate PC-relative relocs. */
2743 if (r_type == R_CRIS_8_PCREL
2744 || r_type == R_CRIS_16_PCREL
2745 || r_type == R_CRIS_32_PCREL)
2746 {
2747 /* If the symbol is local, then we can eliminate the reloc. */
0a4787a0 2748 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
2749 break;
2750
2751 /* If this is with -Bsymbolic and the symbol isn't weak, and
2752 is defined by an ordinary object (the ones we include in
2753 this shared library) then we can also eliminate the
2754 reloc. See comment above for more eliminable cases which
2755 we can't identify at this time. */
2756 if (info->symbolic
2757 && h->root.type != bfd_link_hash_defweak
f5385ebf 2758 && h->def_regular)
915e5146 2759 break;
bac23f82
HPN
2760
2761 if ((sec->flags & SEC_READONLY) != 0)
2762 {
2763 /* FIXME: How do we make this optionally a warning only? */
2764 (*_bfd_error_handler)
2765 (_("%B, section %A:\n relocation %s should not be used"
2766 " in a shared object; recompile with -fPIC"),
2767 abfd,
2768 sec,
2769 cris_elf_howto_table[r_type].name);
2770 }
915e5146
HPN
2771 }
2772
2773 /* We create a reloc section in dynobj and make room for this
2774 reloc. */
2775 if (sreloc == NULL)
2776 {
2777 const char *name;
2778
2779 name = (bfd_elf_string_from_elf_section
2780 (abfd,
2781 elf_elfheader (abfd)->e_shstrndx,
2782 elf_section_data (sec)->rel_hdr.sh_name));
2783 if (name == NULL)
b34976b6 2784 return FALSE;
915e5146 2785
0112cd26 2786 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
915e5146
HPN
2787 && strcmp (bfd_get_section_name (abfd, sec),
2788 name + 5) == 0);
2789
2790 sreloc = bfd_get_section_by_name (dynobj, name);
2791 if (sreloc == NULL)
2792 {
3496cb2a
L
2793 sreloc = bfd_make_section_with_flags (dynobj, name,
2794 (SEC_ALLOC
2795 | SEC_LOAD
2796 | SEC_HAS_CONTENTS
2797 | SEC_IN_MEMORY
2798 | SEC_LINKER_CREATED
2799 | SEC_READONLY));
915e5146 2800 if (sreloc == NULL
915e5146 2801 || !bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 2802 return FALSE;
915e5146 2803 }
99e4ae17
AJ
2804 if (sec->flags & SEC_READONLY)
2805 info->flags |= DF_TEXTREL;
915e5146
HPN
2806 }
2807
eea6121a 2808 sreloc->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2809
2810 /* If we are linking with -Bsymbolic, we count the number of PC
2811 relative relocations we have entered for this symbol, so that
2812 we can discard them again if the symbol is later defined by a
2813 regular object. We know that h is really a pointer to an
2814 elf_cris_link_hash_entry. */
4d96d128
HPN
2815 if ((r_type == R_CRIS_8_PCREL
2816 || r_type == R_CRIS_16_PCREL
2817 || r_type == R_CRIS_32_PCREL)
915e5146
HPN
2818 && info->symbolic)
2819 {
2820 struct elf_cris_link_hash_entry *eh;
2821 struct elf_cris_pcrel_relocs_copied *p;
2822
2823 eh = (struct elf_cris_link_hash_entry *) h;
2824
2825 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2826 if (p->section == sreloc)
2827 break;
2828
2829 if (p == NULL)
2830 {
2831 p = ((struct elf_cris_pcrel_relocs_copied *)
dc810e39 2832 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
915e5146 2833 if (p == NULL)
b34976b6 2834 return FALSE;
915e5146
HPN
2835 p->next = eh->pcrel_relocs_copied;
2836 eh->pcrel_relocs_copied = p;
2837 p->section = sreloc;
2838 p->count = 0;
2839 }
2840
2841 ++p->count;
2842 }
2843 break;
2844
06c15ad7
HPN
2845 /* This relocation describes the C++ object vtable hierarchy.
2846 Reconstruct it for later use during GC. */
2847 case R_CRIS_GNU_VTINHERIT:
c152c796 2848 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 2849 return FALSE;
06c15ad7 2850 break;
a7c10850 2851
06c15ad7
HPN
2852 /* This relocation describes which C++ vtable entries are actually
2853 used. Record for later use during GC. */
2854 case R_CRIS_GNU_VTENTRY:
c152c796 2855 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 2856 return FALSE;
06c15ad7 2857 break;
4d96d128
HPN
2858
2859 default:
2860 /* Other relocs do not appear here. */
2861 bfd_set_error (bfd_error_bad_value);
b34976b6 2862 return FALSE;
06c15ad7
HPN
2863 }
2864 }
a7c10850 2865
b34976b6 2866 return TRUE;
06c15ad7 2867}
4da81684 2868
915e5146
HPN
2869/* Set the sizes of the dynamic sections. */
2870
b34976b6 2871static bfd_boolean
915e5146 2872elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 2873 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN
2874 struct bfd_link_info *info;
2875{
2876 bfd *dynobj;
2877 asection *s;
b34976b6
AM
2878 bfd_boolean plt;
2879 bfd_boolean relocs;
915e5146
HPN
2880
2881 dynobj = elf_hash_table (info)->dynobj;
2882 BFD_ASSERT (dynobj != NULL);
2883
2884 if (elf_hash_table (info)->dynamic_sections_created)
2885 {
2886 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 2887 if (info->executable)
915e5146
HPN
2888 {
2889 s = bfd_get_section_by_name (dynobj, ".interp");
2890 BFD_ASSERT (s != NULL);
eea6121a 2891 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN
2892 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2893 }
2894 }
2895 else
2896 {
2897 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
2898 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2899 elf_cris_adjust_gotplt_to_got,
2900 (PTR) info);
2901
2902 /* We may have created entries in the .rela.got section.
2903 However, if we are not creating the dynamic sections, we will
2904 not actually use these entries. Reset the size of .rela.got,
2905 which will cause it to get stripped from the output file
2906 below. */
2907 s = bfd_get_section_by_name (dynobj, ".rela.got");
2908 if (s != NULL)
eea6121a 2909 s->size = 0;
915e5146
HPN
2910 }
2911
2912 /* If this is a -Bsymbolic shared link, then we need to discard all PC
2913 relative relocs against symbols defined in a regular object. We
2914 allocated space for them in the check_relocs routine, but we will not
2915 fill them in in the relocate_section routine. We also discard space
2916 for relocs that have become for local symbols due to symbol
4d96d128
HPN
2917 visibility changes. For programs, we discard space for relocs for
2918 symbols not referenced by any dynamic object. */
915e5146
HPN
2919 if (info->shared)
2920 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN
2921 elf_cris_discard_excess_dso_dynamics,
2922 (PTR) info);
2923 else
2924 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2925 elf_cris_discard_excess_program_dynamics,
915e5146
HPN
2926 (PTR) info);
2927
2928 /* The check_relocs and adjust_dynamic_symbol entry points have
2929 determined the sizes of the various dynamic sections. Allocate
2930 memory for them. */
b34976b6
AM
2931 plt = FALSE;
2932 relocs = FALSE;
915e5146
HPN
2933 for (s = dynobj->sections; s != NULL; s = s->next)
2934 {
2935 const char *name;
915e5146
HPN
2936
2937 if ((s->flags & SEC_LINKER_CREATED) == 0)
2938 continue;
2939
2940 /* It's OK to base decisions on the section name, because none
2941 of the dynobj section names depend upon the input files. */
2942 name = bfd_get_section_name (dynobj, s);
2943
915e5146
HPN
2944 if (strcmp (name, ".plt") == 0)
2945 {
c456f082
AM
2946 /* Remember whether there is a PLT. */
2947 plt = s->size != 0;
915e5146 2948 }
0112cd26 2949 else if (CONST_STRNEQ (name, ".rela"))
915e5146 2950 {
c456f082 2951 if (s->size != 0)
915e5146 2952 {
915e5146
HPN
2953 /* Remember whether there are any reloc sections other
2954 than .rela.plt. */
2955 if (strcmp (name, ".rela.plt") != 0)
b34976b6 2956 relocs = TRUE;
915e5146 2957
915e5146
HPN
2958 /* We use the reloc_count field as a counter if we need
2959 to copy relocs into the output file. */
2960 s->reloc_count = 0;
2961 }
2962 }
0112cd26 2963 else if (! CONST_STRNEQ (name, ".got")
c456f082 2964 && strcmp (name, ".dynbss") != 0)
915e5146
HPN
2965 {
2966 /* It's not one of our sections, so don't allocate space. */
2967 continue;
2968 }
2969
c456f082 2970 if (s->size == 0)
915e5146 2971 {
c456f082
AM
2972 /* If we don't need this section, strip it from the
2973 output file. This is mostly to handle .rela.bss and
2974 .rela.plt. We must create both sections in
2975 create_dynamic_sections, because they must be created
2976 before the linker maps input sections to output
2977 sections. The linker does that before
2978 adjust_dynamic_symbol is called, and it is that
2979 function which decides whether anything needs to go
2980 into these sections. */
8423293d 2981 s->flags |= SEC_EXCLUDE;
915e5146
HPN
2982 continue;
2983 }
2984
c456f082
AM
2985 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2986 continue;
2987
915e5146
HPN
2988 /* Allocate memory for the section contents. We use bfd_zalloc here
2989 in case unused entries are not reclaimed before the section's
2990 contents are written out. This should not happen, but this way
2991 if it does, we will not write out garbage. For reloc sections,
2992 this will make entries have the type R_CRIS_NONE. */
eea6121a 2993 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 2994 if (s->contents == NULL)
b34976b6 2995 return FALSE;
915e5146
HPN
2996 }
2997
2998 if (elf_hash_table (info)->dynamic_sections_created)
2999 {
3000 /* Add some entries to the .dynamic section. We fill in the
3001 values later, in elf_cris_finish_dynamic_sections, but we
3002 must add the entries now so that we get the correct size for
3003 the .dynamic section. The DT_DEBUG entry is filled in by the
3004 dynamic linker and used by the debugger. */
dc810e39 3005#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3006 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3007
915e5146
HPN
3008 if (!info->shared)
3009 {
dc810e39 3010 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3011 return FALSE;
915e5146
HPN
3012 }
3013
3014 if (plt)
3015 {
dc810e39
AM
3016 if (!add_dynamic_entry (DT_PLTGOT, 0)
3017 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3018 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3019 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3020 return FALSE;
915e5146
HPN
3021 }
3022
3023 if (relocs)
3024 {
dc810e39
AM
3025 if (!add_dynamic_entry (DT_RELA, 0)
3026 || !add_dynamic_entry (DT_RELASZ, 0)
3027 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3028 return FALSE;
915e5146
HPN
3029 }
3030
99e4ae17 3031 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3032 {
dc810e39 3033 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3034 return FALSE;
915e5146
HPN
3035 info->flags |= DF_TEXTREL;
3036 }
3037 }
dc810e39 3038#undef add_dynamic_entry
915e5146 3039
b34976b6 3040 return TRUE;
915e5146
HPN
3041}
3042
3043/* This function is called via elf_cris_link_hash_traverse if we are
3044 creating a shared object. In the -Bsymbolic case, it discards the
3045 space allocated to copy PC relative relocs against symbols which
3046 are defined in regular objects. For the normal non-symbolic case,
3047 we also discard space for relocs that have become local due to
3048 symbol visibility changes. We allocated space for them in the
3049 check_relocs routine, but we won't fill them in in the
3050 relocate_section routine. */
3051
b34976b6 3052static bfd_boolean
4d96d128 3053elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN
3054 struct elf_cris_link_hash_entry *h;
3055 PTR inf;
3056{
3057 struct elf_cris_pcrel_relocs_copied *s;
3058 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3059
e92d460e
AM
3060 if (h->root.root.type == bfd_link_hash_warning)
3061 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3062
915e5146
HPN
3063 /* If a symbol has been forced local or we have found a regular
3064 definition for the symbolic link case, then we won't be needing
3065 any relocs. */
f5385ebf
AM
3066 if (h->root.def_regular
3067 && (h->root.forced_local
915e5146
HPN
3068 || info->symbolic))
3069 {
3070 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3071 s->section->size -= s->count * sizeof (Elf32_External_Rela);
4d96d128
HPN
3072 }
3073
b34976b6 3074 return TRUE;
4d96d128
HPN
3075}
3076
3077/* This function is called via elf_cris_link_hash_traverse if we are *not*
3078 creating a shared object. We discard space for relocs for symbols put
3079 in the .got, but which we found we do not have to resolve at run-time. */
3080
b34976b6 3081static bfd_boolean
4d96d128
HPN
3082elf_cris_discard_excess_program_dynamics (h, inf)
3083 struct elf_cris_link_hash_entry *h;
3084 PTR inf;
3085{
3086 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3087
e92d460e
AM
3088 if (h->root.root.type == bfd_link_hash_warning)
3089 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3090
4d96d128
HPN
3091 /* If we're not creating a shared library and have a symbol which is
3092 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN
3093 (or rather, not defined by a DSO) then lose the reloc for the .got
3094 (don't allocate room for it). Likewise for relocs for something
3095 for which we create a PLT. */
f5385ebf 3096 if (!h->root.def_dynamic
e4a2175c 3097 || h->root.plt.refcount > 0)
4d96d128
HPN
3098 {
3099 if (h->root.got.refcount > 0
3100 /* The size of this section is only valid and in sync with the
3101 various reference counts if we do dynamic; don't decrement it
3102 otherwise. */
3103 && elf_hash_table (info)->dynamic_sections_created)
3104 {
3105 bfd *dynobj = elf_hash_table (info)->dynobj;
3106 asection *srelgot;
3107
3108 BFD_ASSERT (dynobj != NULL);
99c79b2e 3109
4d96d128
HPN
3110 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3111
3112 BFD_ASSERT (srelgot != NULL);
3113
eea6121a 3114 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN
3115 }
3116
3117 /* If the locally-defined symbol isn't used by a DSO, then we don't
3118 have to export it as a dynamic symbol. This was already done for
3119 functions; doing this for all symbols would presumably not
e5dfef09
HPN
3120 introduce new problems. Of course we don't do this if we're
3121 exporting all dynamic symbols. */
0741c7be 3122 if (! info->export_dynamic
77cfaee6 3123 && h->root.dynindx != -1
f5385ebf
AM
3124 && !h->root.def_dynamic
3125 && !h->root.ref_dynamic)
e5dfef09
HPN
3126 {
3127 h->root.dynindx = -1;
3128 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3129 h->root.dynstr_index);
3130 }
915e5146
HPN
3131 }
3132
b34976b6 3133 return TRUE;
915e5146
HPN
3134}
3135
3136/* Reject a file depending on presence and expectation of prefixed
3137 underscores on symbols. */
4da81684 3138
b34976b6 3139static bfd_boolean
4da81684
HPN
3140cris_elf_object_p (abfd)
3141 bfd *abfd;
3142{
bac23f82
HPN
3143 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3144 return FALSE;
3145
4da81684
HPN
3146 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3147 return (bfd_get_symbol_leading_char (abfd) == '_');
3148 else
3149 return (bfd_get_symbol_leading_char (abfd) == 0);
3150}
3151
bac23f82
HPN
3152/* Mark presence or absence of leading underscore. Set machine type
3153 flags from mach type. */
4da81684
HPN
3154
3155static void
3156cris_elf_final_write_processing (abfd, linker)
3157 bfd *abfd;
b34976b6 3158 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 3159{
bac23f82
HPN
3160 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3161
3162 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 3163 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN
3164 e_flags |= EF_CRIS_UNDERSCORE;
3165
3166 switch (bfd_get_mach (abfd))
3167 {
3168 case bfd_mach_cris_v0_v10:
3169 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3170 break;
3171
3172 case bfd_mach_cris_v10_v32:
3173 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3174 break;
3175
3176 case bfd_mach_cris_v32:
3177 e_flags |= EF_CRIS_VARIANT_V32;
3178 break;
3179
3180 default:
3181 _bfd_abort (__FILE__, __LINE__,
3182 _("Unexpected machine number"));
3183 }
3184
3185 elf_elfheader (abfd)->e_flags = e_flags;
3186}
3187
3188/* Set the mach type from e_flags value. */
3189
3190static bfd_boolean
3191cris_elf_set_mach_from_flags (abfd, flags)
3192 bfd *abfd;
3193 unsigned long flags;
3194{
3195 switch (flags & EF_CRIS_VARIANT_MASK)
3196 {
3197 case EF_CRIS_VARIANT_ANY_V0_V10:
3198 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3199 break;
3200
3201 case EF_CRIS_VARIANT_V32:
3202 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3203 break;
3204
3205 case EF_CRIS_VARIANT_COMMON_V10_V32:
3206 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3207 break;
3208
3209 default:
3210 /* Since we don't recognize them, we obviously can't support them
3211 with this code; we'd have to require that all future handling
3212 would be optional. */
3213 bfd_set_error (bfd_error_wrong_format);
3214 return FALSE;
3215 }
3216
3217 return TRUE;
4da81684
HPN
3218}
3219
3220/* Display the flags field. */
3221
b34976b6 3222static bfd_boolean
4da81684
HPN
3223cris_elf_print_private_bfd_data (abfd, ptr)
3224 bfd *abfd;
3225 PTR ptr;
3226{
3227 FILE *file = (FILE *) ptr;
3228
f12123c0 3229 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN
3230
3231 _bfd_elf_print_private_bfd_data (abfd, ptr);
3232
3233 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3234
3235 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3236 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN
3237 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3238 == EF_CRIS_VARIANT_COMMON_V10_V32)
3239 fprintf (file, _(" [v10 and v32]"));
3240 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3241 == EF_CRIS_VARIANT_V32)
3242 fprintf (file, _(" [v32]"));
4da81684
HPN
3243
3244 fputc ('\n', file);
b34976b6 3245 return TRUE;
4da81684
HPN
3246}
3247
3248/* Don't mix files with and without a leading underscore. */
3249
b34976b6 3250static bfd_boolean
4da81684
HPN
3251cris_elf_merge_private_bfd_data (ibfd, obfd)
3252 bfd *ibfd;
3253 bfd *obfd;
3254{
bac23f82 3255 int imach, omach;
4da81684 3256
82e51918 3257 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 3258 return FALSE;
4da81684
HPN
3259
3260 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3261 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3262 return TRUE;
4da81684 3263
bac23f82
HPN
3264 imach = bfd_get_mach (ibfd);
3265
4da81684
HPN
3266 if (! elf_flags_init (obfd))
3267 {
3268 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 3269 elf_flags_init (obfd) = TRUE;
4da81684 3270
bac23f82
HPN
3271 /* We ignore the linker-set mach, and instead set it according to
3272 the first input file. This would also happen if we could
3273 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3274 This allows us to keep the same linker config across
3275 cris(v0..v10) and crisv32. The drawback is that we can't force
3276 the output type, which might be a sane thing to do for a
3277 v10+v32 compatibility object. */
3278 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3279 return FALSE;
4da81684
HPN
3280 }
3281
bac23f82
HPN
3282 if (bfd_get_symbol_leading_char (ibfd)
3283 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN
3284 {
3285 (*_bfd_error_handler)
bac23f82 3286 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM
3287 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3288 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3289 ibfd);
4da81684 3290 bfd_set_error (bfd_error_bad_value);
b34976b6 3291 return FALSE;
4da81684
HPN
3292 }
3293
bac23f82
HPN
3294 omach = bfd_get_mach (obfd);
3295
3296 if (imach != omach)
3297 {
3298 /* We can get an incompatible combination only if either is
3299 bfd_mach_cris_v32, and the other one isn't compatible. */
3300 if ((imach == bfd_mach_cris_v32
3301 && omach != bfd_mach_cris_v10_v32)
3302 || (omach == bfd_mach_cris_v32
3303 && imach != bfd_mach_cris_v10_v32))
3304 {
3305 (*_bfd_error_handler)
3306 ((imach == bfd_mach_cris_v32)
3307 ? _("%B contains CRIS v32 code, incompatible"
3308 " with previous objects")
3309 : _("%B contains non-CRIS-v32 code, incompatible"
3310 " with previous objects"),
3311 ibfd);
3312 bfd_set_error (bfd_error_bad_value);
3313 return FALSE;
3314 }
3315
3316 /* We don't have to check the case where the input is compatible
3317 with v10 and v32, because the output is already known to be set
3318 to the other (compatible) mach. */
3319 if (omach == bfd_mach_cris_v10_v32
3320 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3321 return FALSE;
3322 }
3323
b34976b6 3324 return TRUE;
4da81684 3325}
99e4ae17 3326
bac23f82
HPN
3327/* Do side-effects of e_flags copying to obfd. */
3328
3329static bfd_boolean
3330cris_elf_copy_private_bfd_data (ibfd, obfd)
3331 bfd *ibfd;
3332 bfd *obfd;
3333{
3334 /* Call the base function. */
3335 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
3336 return FALSE;
3337
3338 /* If output is big-endian for some obscure reason, stop here. */
3339 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
3340 return FALSE;
3341
3342 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3343 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3344 return TRUE;
3345
3346 /* Do what we really came here for. */
3347 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
3348}
99e4ae17
AJ
3349
3350static enum elf_reloc_type_class
f51e552e
AM
3351elf_cris_reloc_type_class (rela)
3352 const Elf_Internal_Rela *rela;
99e4ae17 3353{
f51e552e 3354 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ
3355 {
3356 case R_CRIS_RELATIVE:
3357 return reloc_class_relative;
3358 case R_CRIS_JUMP_SLOT:
3359 return reloc_class_plt;
3360 case R_CRIS_COPY:
3361 return reloc_class_copy;
3362 default:
3363 return reloc_class_normal;
3364 }
3365}
06c15ad7
HPN
3366\f
3367#define ELF_ARCH bfd_arch_cris
3368#define ELF_MACHINE_CODE EM_CRIS
3369#define ELF_MAXPAGESIZE 0x2000
3370
3371#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
3372#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 3373#define elf_symbol_leading_char 0
06c15ad7
HPN
3374
3375#define elf_info_to_howto_rel NULL
3376#define elf_info_to_howto cris_info_to_howto_rela
3377#define elf_backend_relocate_section cris_elf_relocate_section
3378#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
3379#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
3380#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN
3381#define elf_backend_grok_prstatus cris_elf_grok_prstatus
3382#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN
3383
3384#define elf_backend_can_gc_sections 1
51b64d56 3385#define elf_backend_can_refcount 1
06c15ad7 3386
4da81684
HPN
3387#define elf_backend_object_p cris_elf_object_p
3388#define elf_backend_final_write_processing \
3389 cris_elf_final_write_processing
3390#define bfd_elf32_bfd_print_private_bfd_data \
3391 cris_elf_print_private_bfd_data
3392#define bfd_elf32_bfd_merge_private_bfd_data \
3393 cris_elf_merge_private_bfd_data
bac23f82
HPN
3394#define bfd_elf32_bfd_copy_private_bfd_data \
3395 cris_elf_copy_private_bfd_data
4da81684 3396
06c15ad7
HPN
3397#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
3398
915e5146
HPN
3399#define bfd_elf32_bfd_link_hash_table_create \
3400 elf_cris_link_hash_table_create
3401#define elf_backend_adjust_dynamic_symbol \
3402 elf_cris_adjust_dynamic_symbol
3403#define elf_backend_size_dynamic_sections \
3404 elf_cris_size_dynamic_sections
74541ad4 3405#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN
3406#define elf_backend_finish_dynamic_symbol \
3407 elf_cris_finish_dynamic_symbol
3408#define elf_backend_finish_dynamic_sections \
3409 elf_cris_finish_dynamic_sections
3410#define elf_backend_create_dynamic_sections \
3411 _bfd_elf_create_dynamic_sections
3412#define bfd_elf32_bfd_final_link \
c152c796 3413 bfd_elf_gc_common_final_link
915e5146 3414#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 3415#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN
3416
3417#define elf_backend_want_got_plt 1
3418#define elf_backend_plt_readonly 1
3419#define elf_backend_want_plt_sym 0
3420#define elf_backend_got_header_size 12
915e5146 3421
06c15ad7
HPN
3422/* Later, we my want to optimize RELA entries into REL entries for dynamic
3423 linking and libraries (if it's a win of any significance). Until then,
3424 take the easy route. */
3425#define elf_backend_may_use_rel_p 0
3426#define elf_backend_may_use_rela_p 1
f0fe0e16 3427#define elf_backend_rela_normal 1
06c15ad7
HPN
3428
3429#include "elf32-target.h"
4da81684
HPN
3430
3431#define INCLUDED_TARGET_FILE
3432
3433#undef TARGET_LITTLE_SYM
3434#undef TARGET_LITTLE_NAME
3435#undef elf_symbol_leading_char
3436
3437#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3438#define TARGET_LITTLE_NAME "elf32-us-cris"
3439#define elf_symbol_leading_char '_'
3440
3441#include "elf32-target.h"