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PR 7099
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
CommitLineData
06c15ad7 1/* CRIS-specific support for 32-bit ELF.
83bac4b0 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 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
cd123cb7
NC		 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
06c15ad7 24
06c15ad7 25#include "sysdep.h"
3db64b00 26#include "bfd.h"
06c15ad7
HPN		 27#include "libbfd.h"
28#include "elf-bfd.h"
29#include "elf/cris.h"
100382c7 30#include <limits.h>
06c15ad7
HPN		 31
32/* Forward declarations. */
33static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35
a7c10850 36static void cris_info_to_howto_rela
947216bf 37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
06c15ad7 38
bac23f82
HPN		 39static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41
b34976b6 42static bfd_boolean cris_elf_grok_prstatus
72209a1f
HPN		 43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44
b34976b6 45static bfd_boolean cris_elf_grok_psinfo
72209a1f
HPN		 46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47
b34976b6 48static bfd_boolean cris_elf_relocate_section
06c15ad7
HPN		 49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51
52static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
55
b34976b6 56static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
4da81684 57
b34976b6 58static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
4da81684 59
bac23f82
HPN		 60static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
62
b34976b6 63static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
4da81684 64
b34976b6 65static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
bac23f82 66static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
4da81684 67
915e5146 68struct elf_cris_link_hash_entry;
b34976b6 69static bfd_boolean elf_cris_discard_excess_dso_dynamics
4d96d128 70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 71static bfd_boolean elf_cris_discard_excess_program_dynamics
915e5146 72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 73static bfd_boolean elf_cris_adjust_gotplt_to_got
915e5146 74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 75static bfd_boolean elf_cris_try_fold_plt_to_got
915e5146
HPN		 76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 PARAMS ((bfd *));
b34976b6 81static bfd_boolean elf_cris_adjust_dynamic_symbol
915e5146 82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 83static bfd_boolean cris_elf_check_relocs
99c79b2e
AJ		 84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86
b34976b6 87static bfd_boolean elf_cris_size_dynamic_sections
915e5146 88 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 89static bfd_boolean elf_cris_finish_dynamic_symbol
915e5146
HPN		 90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 Elf_Internal_Sym *));
b34976b6 92static bfd_boolean elf_cris_finish_dynamic_sections
915e5146
HPN		 93 PARAMS ((bfd *, struct bfd_link_info *));
94static void elf_cris_hide_symbol
b34976b6 95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
99e4ae17 96static enum elf_reloc_type_class elf_cris_reloc_type_class
f51e552e 97 PARAMS ((const Elf_Internal_Rela *));
915e5146 98
06c15ad7
HPN		 99static reloc_howto_type cris_elf_howto_table [] =
100{
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
103 0, /* rightshift */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
105 32, /* bitsize */
b34976b6 106 FALSE, /* pc_relative */
06c15ad7
HPN		 107 0, /* bitpos */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
b34976b6 111 FALSE, /* partial_inplace */
06c15ad7
HPN		 112 0, /* src_mask */
113 0, /* dst_mask */
b34976b6 114 FALSE), /* pcrel_offset */
06c15ad7
HPN		 115
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
118 0, /* rightshift */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
120 8, /* bitsize */
b34976b6 121 FALSE, /* pc_relative */
06c15ad7
HPN		 122 0, /* bitpos */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
b34976b6 126 FALSE, /* partial_inplace */
06c15ad7
HPN		 127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
b34976b6 129 FALSE), /* pcrel_offset */
06c15ad7
HPN		 130
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
133 0, /* rightshift */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
135 16, /* bitsize */
b34976b6 136 FALSE, /* pc_relative */
06c15ad7
HPN		 137 0, /* bitpos */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
b34976b6 141 FALSE, /* partial_inplace */
06c15ad7
HPN		 142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
b34976b6 144 FALSE), /* pcrel_offset */
06c15ad7
HPN		 145
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
148 0, /* rightshift */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
150 32, /* bitsize */
b34976b6 151 FALSE, /* pc_relative */
06c15ad7 152 0, /* bitpos */
b2efcd36
HPN		 153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
06c15ad7
HPN		 159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
b34976b6 161 FALSE, /* partial_inplace */
06c15ad7
HPN		 162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
06c15ad7 165
915e5146 166 /* An 8 bit PC-relative relocation. */
06c15ad7
HPN		 167 HOWTO (R_CRIS_8_PCREL, /* type */
168 0, /* rightshift */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
170 8, /* bitsize */
b34976b6 171 TRUE, /* pc_relative */
06c15ad7
HPN		 172 0, /* bitpos */
173 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 174 cris_elf_pcrel_reloc, /* special_function */
06c15ad7 175 "R_CRIS_8_PCREL", /* name */
b34976b6 176 FALSE, /* partial_inplace */
06c15ad7
HPN		 177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
b34976b6 179 TRUE), /* pcrel_offset */
06c15ad7 180
915e5146 181 /* A 16 bit PC-relative relocation. */
06c15ad7
HPN		 182 HOWTO (R_CRIS_16_PCREL, /* type */
183 0, /* rightshift */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
185 16, /* bitsize */
b34976b6 186 TRUE, /* pc_relative */
06c15ad7
HPN		 187 0, /* bitpos */
188 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 189 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 190 "R_CRIS_16_PCREL", /* name */
b34976b6 191 FALSE, /* partial_inplace */
06c15ad7
HPN		 192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
b34976b6 194 TRUE), /* pcrel_offset */
06c15ad7 195
915e5146 196 /* A 32 bit PC-relative relocation. */
06c15ad7
HPN		 197 HOWTO (R_CRIS_32_PCREL, /* type */
198 0, /* rightshift */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
200 32, /* bitsize */
b34976b6 201 TRUE, /* pc_relative */
06c15ad7
HPN		 202 0, /* bitpos */
203 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 204 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 205 "R_CRIS_32_PCREL", /* name */
b34976b6 206 FALSE, /* partial_inplace */
06c15ad7
HPN		 207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
b34976b6 209 TRUE), /* pcrel_offset */
06c15ad7 210
915e5146
HPN		 211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
06c15ad7
HPN		 213 0, /* rightshift */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 0, /* bitsize */
b34976b6 216 FALSE, /* pc_relative */
06c15ad7
HPN		 217 0, /* bitpos */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
b34976b6 221 FALSE, /* partial_inplace */
06c15ad7
HPN		 222 0, /* src_mask */
223 0, /* dst_mask */
b34976b6 224 FALSE), /* pcrel_offset */
06c15ad7 225
915e5146
HPN		 226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
06c15ad7
HPN		 228 0, /* rightshift */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
b34976b6 231 FALSE, /* pc_relative */
06c15ad7
HPN		 232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
b34976b6 236 FALSE, /* partial_inplace */
06c15ad7
HPN		 237 0, /* src_mask */
238 0, /* dst_mask */
b34976b6 239 FALSE), /* pcrel_offset */
915e5146
HPN		 240
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
247 0, /* rightshift */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
249 32, /* bitsize */
b34976b6 250 FALSE, /* pc_relative */
915e5146
HPN		 251 0, /* bitpos */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
b34976b6 255 FALSE, /* partial_inplace */
915e5146
HPN		 256 0, /* src_mask */
257 0, /* dst_mask */
b34976b6 258 FALSE), /* pcrel_offset */
915e5146
HPN		 259
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
b34976b6 265 FALSE, /* pc_relative */
915e5146
HPN		 266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_GLOB_DAT", /* name */
b34976b6 270 FALSE, /* partial_inplace */
915e5146
HPN		 271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
b34976b6 273 FALSE), /* pcrel_offset */
915e5146
HPN		 274
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 32, /* bitsize */
b34976b6 280 FALSE, /* pc_relative */
915e5146
HPN		 281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
b34976b6 285 FALSE, /* partial_inplace */
915e5146
HPN		 286 0, /* src_mask */
287 0, /* dst_mask */
b34976b6 288 FALSE), /* pcrel_offset */
915e5146
HPN		 289
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
292 addend. */
293 HOWTO (R_CRIS_RELATIVE, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 32, /* bitsize */
b34976b6 297 FALSE, /* pc_relative */
915e5146
HPN		 298 0, /* bitpos */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
b34976b6 302 FALSE, /* partial_inplace */
915e5146
HPN		 303 0, /* src_mask */
304 0xffffffff, /* dst_mask */
b34976b6 305 FALSE), /* pcrel_offset */
915e5146
HPN		 306
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
309 0, /* rightshift */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
311 16, /* bitsize */
b34976b6 312 FALSE, /* pc_relative */
915e5146
HPN		 313 0, /* bitpos */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
b34976b6 317 FALSE, /* partial_inplace */
915e5146
HPN		 318 0, /* src_mask */
319 0xffff, /* dst_mask */
b34976b6 320 FALSE), /* pcrel_offset */
915e5146
HPN		 321
322 HOWTO (R_CRIS_32_GOT, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 32, /* bitsize */
b34976b6 326 FALSE, /* pc_relative */
915e5146
HPN		 327 0, /* bitpos */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
b34976b6 331 FALSE, /* partial_inplace */
915e5146
HPN		 332 0, /* src_mask */
333 0xffffffff, /* dst_mask */
b34976b6 334 FALSE), /* pcrel_offset */
915e5146
HPN		 335
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
339 0, /* rightshift */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
b34976b6 342 FALSE, /* pc_relative */
915e5146
HPN		 343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
b34976b6 347 FALSE, /* partial_inplace */
915e5146
HPN		 348 0, /* src_mask */
349 0xffff, /* dst_mask */
b34976b6 350 FALSE), /* pcrel_offset */
915e5146
HPN		 351
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
b34976b6 356 FALSE, /* pc_relative */
915e5146
HPN		 357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
b34976b6 361 FALSE, /* partial_inplace */
915e5146
HPN		 362 0, /* src_mask */
363 0xffffffff, /* dst_mask */
b34976b6 364 FALSE), /* pcrel_offset */
915e5146
HPN		 365
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 be necessary. */
368 HOWTO (R_CRIS_32_GOTREL, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 32, /* bitsize */
b34976b6 372 FALSE, /* pc_relative */
915e5146
HPN		 373 0, /* bitpos */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
b34976b6 377 FALSE, /* partial_inplace */
915e5146
HPN		 378 0, /* src_mask */
379 0xffffffff, /* dst_mask */
b34976b6 380 FALSE), /* pcrel_offset */
915e5146
HPN		 381
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 32, /* bitsize */
b34976b6 388 FALSE, /* pc_relative */
915e5146
HPN		 389 0, /* bitpos */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
b34976b6 393 FALSE, /* partial_inplace */
915e5146
HPN		 394 0, /* src_mask */
395 0xffffffff, /* dst_mask */
b34976b6 396 FALSE), /* pcrel_offset */
915e5146
HPN		 397
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
400 symbol. */
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 32, /* bitsize */
b34976b6 405 TRUE, /* pc_relative */
915e5146
HPN		 406 0, /* bitpos */
407 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 408 cris_elf_pcrel_reloc, /* special_function */
915e5146 409 "R_CRIS_32_PLT_PCREL", /* name */
b34976b6 410 FALSE, /* partial_inplace */
915e5146
HPN		 411 0, /* src_mask */
412 0xffffffff, /* dst_mask */
3926fc54
HPN		 413 TRUE), /* pcrel_offset */
414
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420#define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
100382c7
HPN		 423#define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
3926fc54 425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
100382c7
HPN		 426#define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427#define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
3926fc54
HPN		 428
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
100382c7 434 TLSHOWTO16S (R_CRIS_16_DTPREL),
3926fc54 435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
100382c7 436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
3926fc54 437 TLSHOWTO32 (R_CRIS_32_TPREL),
100382c7 438 TLSHOWTO16S (R_CRIS_16_TPREL),
75f500d7
HPN		 439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
06c15ad7
HPN		 441};
442\f
443/* Map BFD reloc types to CRIS ELF reloc types. */
444
445struct cris_reloc_map
446{
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
449};
450
451static const struct cris_reloc_map cris_reloc_map [] =
452{
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
915e5146
HPN		 461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
3926fc54
HPN		 472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
75f500d7
HPN		 483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
06c15ad7
HPN		 485};
486
487static reloc_howto_type *
488cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
491{
908d94bf 492 unsigned int i;
06c15ad7 493
908d94bf 494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
06c15ad7
HPN		 495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
a7c10850 497
06c15ad7
HPN		 498 return NULL;
499}
500
157090f7
AM		 501static reloc_howto_type *
502cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
503{
504 unsigned int i;
505
506 for (i = 0;
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
508 i++)
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
512
513 return NULL;
514}
515
06c15ad7
HPN		 516/* Set the howto pointer for an CRIS ELF reloc. */
517
518static void
519cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
521 arelent * cache_ptr;
947216bf 522 Elf_Internal_Rela * dst;
06c15ad7 523{
100382c7 524 enum elf_cris_reloc_type r_type;
06c15ad7
HPN		 525
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
529}
bac23f82
HPN		 530
531bfd_reloc_status_type
532cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
536 asymbol *symbol;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
539 bfd *output_bfd;
540 char **error_message ATTRIBUTE_UNUSED;
541{
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
549
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
553
554 return
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
557}
06c15ad7 558\f
bac23f82
HPN		 559/* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
72209a1f 563
b34976b6 564static bfd_boolean
72209a1f
HPN		 565cris_elf_grok_prstatus (abfd, note)
566 bfd *abfd;
567 Elf_Internal_Note *note;
568{
569 int offset;
eea6121a 570 size_t size;
72209a1f 571
bac23f82
HPN		 572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
574 {
575 default:
576 return FALSE;
577
578 case 202: /* Linux/CRISv32 */
579 /* pr_cursig */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
581
582 /* pr_pid */
583 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
584
585 /* pr_reg */
586 offset = 70;
587 size = 128;
588
589 break;
590 }
591 else
592 switch (note->descsz)
593 {
72209a1f 594 default:
b34976b6 595 return FALSE;
72209a1f 596
bc0d28ee 597 case 214: /* Linux/CRIS */
72209a1f
HPN		 598 /* pr_cursig */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
600
601 /* pr_pid */
602 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
603
604 /* pr_reg */
605 offset = 70;
eea6121a 606 size = 140;
72209a1f
HPN		 607
608 break;
bac23f82 609 }
72209a1f
HPN		 610
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 613 size, note->descpos + offset);
72209a1f
HPN		 614}
615
b34976b6 616static bfd_boolean
72209a1f
HPN		 617cris_elf_grok_psinfo (abfd, note)
618 bfd *abfd;
619 Elf_Internal_Note *note;
620{
bac23f82
HPN		 621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
623 {
624 default:
625 return FALSE;
626
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
632 }
633 else
634 switch (note->descsz)
635 {
72209a1f 636 default:
b34976b6 637 return FALSE;
72209a1f
HPN		 638
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
bac23f82 641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
72209a1f 642 elf_tdata (abfd)->core_command
bac23f82
HPN		 643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
644 }
72209a1f
HPN		 645
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
649
650 {
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
653
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
656 }
657
b34976b6 658 return TRUE;
72209a1f
HPN		 659}
660\f
915e5146
HPN		 661/* The name of the dynamic interpreter. This is put in the .interp
662 section. */
663
664#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
665
666/* The size in bytes of an entry in the procedure linkage table. */
667
668#define PLT_ENTRY_SIZE 20
bac23f82 669#define PLT_ENTRY_SIZE_V32 26
915e5146
HPN		 670
671/* The first entry in an absolute procedure linkage table looks like this. */
672
673static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
674{
675 0xfc, 0xe1,
cedb70c5 676 0x7e, 0x7e, /* push mof. */
915e5146
HPN		 677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
bac23f82
HPN		 682 0x30, 0x09 /* jump [...] */
683};
684
685static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
686{
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
915e5146
HPN		 697};
698
699/* Subsequent entries in an absolute procedure linkage table look like
700 this. */
701
702static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
703{
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
710 0xec, 0xff,
711 0xff, 0xff /* Replaced with offset to start of .plt. */
712};
713
bac23f82
HPN		 714static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
715{
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
725 0xb0, 0x05 /* nop */
726};
727
915e5146
HPN		 728/* The first entry in a PIC procedure linkage table looks like this. */
729
730static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
731{
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
736};
737
bac23f82
HPN		 738static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
739{
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
749 0, 0, 0, 0,
750 0, 0, 0, 0
751};
752
915e5146
HPN		 753/* Subsequent entries in a PIC procedure linkage table look like this. */
754
755static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
756{
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
764 0xff, 0xff
765};
bac23f82
HPN		 766
767static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
768{
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
778 0xb0, 0x05 /* nop */
779};
915e5146
HPN		 780\f
781/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
783 without reason.
784
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
791
792/* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
794
795struct elf_cris_pcrel_relocs_copied
796{
797 /* Next section. */
798 struct elf_cris_pcrel_relocs_copied *next;
0d08de41 799
915e5146
HPN		 800 /* A section in dynobj. */
801 asection *section;
0d08de41 802
915e5146
HPN		 803 /* Number of relocs copied in this section. */
804 bfd_size_type count;
0d08de41
HPN		 805
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
915e5146
HPN		 808};
809
810/* CRIS ELF linker hash entry. */
811
812struct elf_cris_link_hash_entry
813{
814 struct elf_link_hash_entry root;
815
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
818
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
822
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
825
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
100382c7
HPN		 831
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
837
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
844
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
915e5146
HPN		 849};
850
100382c7
HPN		 851/* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
857 3*LSNUM. */
858
859#define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860#define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861#define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862#define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
863
915e5146
HPN		 864/* CRIS ELF linker hash table. */
865
866struct elf_cris_link_hash_table
867{
868 struct elf_link_hash_table root;
869
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
100382c7
HPN		 874
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
915e5146
HPN		 881};
882
883/* Traverse a CRIS ELF linker hash table. */
884
885#define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
887 (&(table)->root, \
b34976b6 888 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
915e5146
HPN		 889 (info)))
890
891/* Get the CRIS ELF linker hash table from a link_info structure. */
892
893#define elf_cris_hash_table(p) \
894 ((struct elf_cris_link_hash_table *) (p)->hash)
895
100382c7
HPN		 896/* Get the CRIS ELF linker hash entry from a regular hash entry (the
897 "parent class"). The .root reference is just a simple type
898 check on the argument. */
899
900#define elf_cris_hash_entry(p) \
901 ((struct elf_cris_link_hash_entry *) (&(p)->root))
902
915e5146
HPN		 903/* Create an entry in a CRIS ELF linker hash table. */
904
905static struct bfd_hash_entry *
906elf_cris_link_hash_newfunc (entry, table, string)
907 struct bfd_hash_entry *entry;
908 struct bfd_hash_table *table;
909 const char *string;
910{
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
913
914 /* Allocate the structure if it has not already been allocated by a
915 subclass. */
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
922
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
926 table, string));
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
928 {
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
100382c7
HPN		 932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
915e5146
HPN		 935 }
936
937 return (struct bfd_hash_entry *) ret;
938}
939
940/* Create a CRIS ELF linker hash table. */
941
942static struct bfd_link_hash_table *
943elf_cris_link_hash_table_create (abfd)
944 bfd *abfd;
945{
946 struct elf_cris_link_hash_table *ret;
dc810e39 947 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
915e5146 948
e2d34d7d 949 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
915e5146
HPN		 950 if (ret == (struct elf_cris_link_hash_table *) NULL)
951 return NULL;
952
66eb6687
AM		 953 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
954 elf_cris_link_hash_newfunc,
955 sizeof (struct elf_cris_link_hash_entry)))
915e5146 956 {
e2d34d7d 957 free (ret);
915e5146
HPN		 958 return NULL;
959 }
960
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
964
100382c7
HPN		 965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
967
915e5146
HPN		 968 return &ret->root.root;
969}
970\f
06c15ad7 971/* Perform a single relocation. By default we use the standard BFD
915e5146 972 routines, with a few tweaks. */
06c15ad7
HPN		 973
974static bfd_reloc_status_type
975cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
976 relocation)
977 reloc_howto_type * howto;
978 bfd * input_bfd;
979 asection * input_section;
980 bfd_byte * contents;
981 Elf_Internal_Rela * rel;
982 bfd_vma relocation;
983{
915e5146 984 bfd_reloc_status_type r;
100382c7 985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
915e5146
HPN		 986
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
100382c7 990 switch (r_type)
915e5146
HPN		 991 {
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
994 case R_CRIS_16_GOT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
997 break;
998
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1001 relocation -= 2;
1002 /* Fall through. */
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1005 relocation -= 2;
1006 break;
1007
1008 default:
1009 break;
1010 }
1011
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
06c15ad7
HPN		 1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1015 return r;
1016}
1017\f
100382c7
HPN		 1018
1019/* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024static int additional_relocation_error_msg_count = 10;
1025
06c15ad7
HPN		 1026/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1028
b34976b6 1029static bfd_boolean
06c15ad7
HPN		 1030cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031 contents, relocs, local_syms, local_sections)
b34976b6
AM		 1032 bfd *output_bfd ATTRIBUTE_UNUSED;
1033 struct bfd_link_info *info;
1034 bfd *input_bfd;
1035 asection *input_section;
1036 bfd_byte *contents;
1037 Elf_Internal_Rela *relocs;
1038 Elf_Internal_Sym *local_syms;
1039 asection **local_sections;
06c15ad7 1040{
915e5146 1041 bfd *dynobj;
b34976b6
AM		 1042 Elf_Internal_Shdr *symtab_hdr;
1043 struct elf_link_hash_entry **sym_hashes;
915e5146
HPN		 1044 bfd_vma *local_got_offsets;
1045 asection *sgot;
1046 asection *splt;
1047 asection *sreloc;
b34976b6
AM		 1048 Elf_Internal_Rela *rel;
1049 Elf_Internal_Rela *relend;
100382c7 1050 asection *srelgot;
06c15ad7 1051
915e5146
HPN		 1052 dynobj = elf_hash_table (info)->dynobj;
1053 local_got_offsets = elf_local_got_offsets (input_bfd);
06c15ad7
HPN		 1054 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055 sym_hashes = elf_sym_hashes (input_bfd);
1056 relend = relocs + input_section->reloc_count;
1057
915e5146
HPN		 1058 sgot = NULL;
1059 splt = NULL;
1060 sreloc = NULL;
100382c7 1061 srelgot = NULL;
915e5146
HPN		 1062
1063 if (dynobj != NULL)
1064 {
1065 splt = bfd_get_section_by_name (dynobj, ".plt");
1066 sgot = bfd_get_section_by_name (dynobj, ".got");
1067 }
1068
06c15ad7
HPN		 1069 for (rel = relocs; rel < relend; rel ++)
1070 {
b34976b6
AM		 1071 reloc_howto_type *howto;
1072 unsigned long r_symndx;
1073 Elf_Internal_Sym *sym;
1074 asection *sec;
1075 struct elf_link_hash_entry *h;
1076 bfd_vma relocation;
1077 bfd_reloc_status_type r;
1078 const char *symname = NULL;
100382c7 1079 enum elf_cris_reloc_type r_type;
a7c10850 1080
06c15ad7 1081 r_type = ELF32_R_TYPE (rel->r_info);
a7c10850 1082
06c15ad7
HPN		 1083 if ( r_type == R_CRIS_GNU_VTINHERIT
1084 || r_type == R_CRIS_GNU_VTENTRY)
1085 continue;
a7c10850 1086
f0fe0e16 1087 r_symndx = ELF32_R_SYM (rel->r_info);
915e5146 1088 howto = cris_elf_howto_table + r_type;
06c15ad7
HPN		 1089 h = NULL;
1090 sym = NULL;
1091 sec = NULL;
a7c10850 1092
06c15ad7
HPN		 1093 if (r_symndx < symtab_hdr->sh_info)
1094 {
1095 sym = local_syms + r_symndx;
1096 sec = local_sections [r_symndx];
8517fae7 1097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a7c10850 1098
dc810e39
AM		 1099 symname = (bfd_elf_string_from_elf_section
1100 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101 if (symname == NULL)
1102 symname = bfd_section_name (input_bfd, sec);
06c15ad7
HPN		 1103 }
1104 else
1105 {
560e09e9
NC		 1106 bfd_boolean warned;
1107 bfd_boolean unresolved_reloc;
0a4787a0 1108
b2a8e766
AM		 1109 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110 r_symndx, symtab_hdr, sym_hashes,
1111 h, sec, relocation,
1112 unresolved_reloc, warned);
915e5146 1113
100382c7
HPN		 1114 symname = h->root.root.string;
1115
560e09e9 1116 if (unresolved_reloc
915e5146
HPN		 1117 /* Perhaps we should detect the cases that
1118 sec->output_section is expected to be NULL like i386 and
1119 m68k, but apparently (and according to elfxx-ia64.c) all
1120 valid cases are where the symbol is defined in a shared
1121 object which we link dynamically against. This includes
1122 PLT relocs for which we've created a PLT entry and other
1123 relocs for which we're prepared to create dynamic
1124 relocations.
1125
1126 For now, new situations cause us to just err when
1127 sec->output_offset is NULL but the object with the symbol
1128 is *not* dynamically linked against. Thus this will
1129 automatically remind us so we can see if there are other
1130 valid cases we need to revisit. */
560e09e9
NC		 1131 && (sec->owner->flags & DYNAMIC) != 0)
1132 relocation = 0;
1133
1134 else if (h->root.type == bfd_link_hash_defined
1135 || h->root.type == bfd_link_hash_defweak)
1136 {
1137 /* Here follow the cases where the relocation value must
1138 be zero (or when further handling is simplified when
1139 zero). I can't claim to understand the various
1140 conditions and they weren't described in the files
1141 where I copied them from (elf32-m68k.c and
1142 elf32-i386.c), but let's mention examples of where
1143 they happen. FIXME: Perhaps define and use a
1144 dynamic_symbol_p function like ia64.
1145
1146 - When creating a shared library, we can have an
1147 ordinary relocation for a symbol defined in a shared
1148 library (perhaps the one we create). We then make
1149 the relocation value zero, as the value seen now will
1150 be added into the relocation addend in this shared
1151 library, but must be handled only at dynamic-link
1152 time. FIXME: Not sure this example covers the
1153 h->elf_link_hash_flags test, though it's there in
1154 other targets. */
1155 if (info->shared
1156 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1157 || !h->def_regular)
560e09e9
NC		 1158 && (input_section->flags & SEC_ALLOC) != 0
1159 && (r_type == R_CRIS_8
1160 || r_type == R_CRIS_16
1161 || r_type == R_CRIS_32
1162 || r_type == R_CRIS_8_PCREL
1163 || r_type == R_CRIS_16_PCREL
1164 || r_type == R_CRIS_32_PCREL))
915e5146 1165 relocation = 0;
ab96bf03 1166 else if (!info->relocatable && unresolved_reloc)
915e5146 1167 {
560e09e9 1168 _bfd_error_handler
bac23f82 1169 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
d003868e
AM		 1170 input_bfd,
1171 input_section,
8f615d07 1172 cris_elf_howto_table[r_type].name,
d003868e 1173 symname);
915e5146 1174 bfd_set_error (bfd_error_bad_value);
b34976b6 1175 return FALSE;
915e5146 1176 }
06c15ad7 1177 }
06c15ad7 1178 }
a7c10850 1179
ab96bf03
AM		 1180 if (sec != NULL && elf_discarded_section (sec))
1181 {
1182 /* For relocs against symbols from removed linkonce sections,
1183 or sections discarded by a linker script, we just want the
1184 section contents zeroed. Avoid any special processing. */
1185 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186 rel->r_info = 0;
1187 rel->r_addend = 0;
1188 continue;
1189 }
1190
1191 if (info->relocatable)
1192 continue;
1193
915e5146 1194 switch (r_type)
06c15ad7 1195 {
915e5146
HPN		 1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1203 if (h != NULL
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
06c15ad7 1205 {
915e5146
HPN		 1206 asection *sgotplt
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 bfd_vma got_offset;
a7c10850 1209
915e5146
HPN		 1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
a7c10850 1212
915e5146
HPN		 1213 got_offset
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
06c15ad7 1215
915e5146 1216 relocation = got_offset;
06c15ad7 1217 break;
915e5146 1218 }
06c15ad7 1219
4d96d128 1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
915e5146
HPN		 1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
e4a2175c
HPN		 1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1229 if (h != NULL
1230 && (h->got.offset == (bfd_vma) -1
1231 || (!info->shared
f5385ebf
AM		 1232 && !(h->def_regular
1233 || (!h->def_dynamic
1234 && h->root.type == bfd_link_hash_undefweak)))))
915e5146
HPN		 1235 {
1236 (*_bfd_error_handler)
e4a2175c 1237 ((h->got.offset == (bfd_vma) -1)
bac23f82 1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
d003868e 1239 " against symbol `%s'")
bac23f82 1240 : _("%B, section %A: No PLT for relocation %s"
d003868e
AM		 1241 " against symbol `%s'"),
1242 input_bfd,
1243 input_section,
915e5146 1244 cris_elf_howto_table[r_type].name,
ada1953e
HPN		 1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
915e5146
HPN		 1247
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
b34976b6 1252 return FALSE;
915e5146
HPN		 1253 }
1254 /* Fall through. */
1255
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1258 case R_CRIS_16_GOT:
1259 case R_CRIS_32_GOT:
1260 {
1261 bfd_vma off;
1262
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1266
1267 if (h != NULL)
1268 {
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272 if (!elf_hash_table (info)->dynamic_sections_created
205cfeb0 1273 || (! info->shared
f5385ebf 1274 && (h->def_regular
e4a2175c 1275 || h->type == STT_FUNC
f5385ebf 1276 || h->needs_plt))
915e5146
HPN		 1277 || (info->shared
1278 && (info->symbolic || h->dynindx == -1)
f5385ebf 1279 && h->def_regular))
915e5146 1280 {
4d96d128 1281 /* This wasn't checked above for ! info->shared, but
e4a2175c
HPN		 1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
6849c52f
HPN		 1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || info->shared
f5385ebf 1287 || h->def_regular
e4a2175c 1288 || h->type == STT_FUNC
f5385ebf 1289 || h->needs_plt
6849c52f 1290 || h->root.type == bfd_link_hash_undefweak);
4d96d128 1291
915e5146 1292 /* This is actually a static link, or it is a
6849c52f
HPN		 1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1301
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
915e5146
HPN		 1306 if ((off & 1) != 0)
1307 off &= ~1;
1308 else
1309 {
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1312 h->got.offset |= 1;
1313 }
1314 }
1315 }
1316 else
1317 {
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321 off = local_got_offsets[r_symndx];
1322
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1326 if ((off & 1) != 0)
1327 off &= ~1;
1328 else
1329 {
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332 if (info->shared)
1333 {
915e5146 1334 Elf_Internal_Rela outrel;
947216bf 1335 bfd_byte *loc;
915e5146 1336
100382c7
HPN		 1337 if (srelgot == NULL)
1338 srelgot
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
915e5146
HPN		 1341
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1344 + off);
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
100382c7
HPN		 1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
947216bf 1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN		 1350 }
1351
1352 local_got_offsets[r_symndx] |= 1;
1353 }
1354 }
1355
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1358 {
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1363 if (h == NULL)
1364 (*_bfd_error_handler)
bac23f82 1365 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM		 1366 " against local symbol"),
1367 input_bfd,
1368 input_section,
915e5146 1369 cris_elf_howto_table[r_type].name,
d003868e 1370 rel->r_addend);
915e5146
HPN		 1371 else
1372 (*_bfd_error_handler)
bac23f82 1373 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM		 1374 " against symbol `%s'"),
1375 input_bfd,
1376 input_section,
915e5146
HPN		 1377 cris_elf_howto_table[r_type].name,
1378 rel->r_addend,
d003868e 1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
915e5146
HPN		 1380
1381 bfd_set_error (bfd_error_bad_value);
b34976b6 1382 return FALSE;
915e5146
HPN		 1383 }
1384 }
1385 break;
06c15ad7 1386
915e5146 1387 case R_CRIS_32_GOTREL:
3dab95d3
HPN		 1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1391 if (h != NULL
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393 && !(!info->shared
f5385ebf
AM		 1394 && (h->def_regular
1395 || (!h->def_dynamic
3dab95d3 1396 && h->root.type == bfd_link_hash_undefweak))))
915e5146
HPN		 1397 {
1398 (*_bfd_error_handler)
bac23f82
HPN		 1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
d003868e
AM		 1401 input_bfd,
1402 input_section,
915e5146 1403 cris_elf_howto_table[r_type].name,
d003868e 1404 symname);
915e5146 1405 bfd_set_error (bfd_error_bad_value);
b34976b6 1406 return FALSE;
06c15ad7
HPN		 1407 }
1408
58255df3
HPN		 1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1412 if (sgot == NULL)
1413 {
1414 (*_bfd_error_handler)
bac23f82 1415 (_("%B, section %A: relocation %s with no GOT created"),
d003868e
AM		 1416 input_bfd,
1417 input_section,
1418 cris_elf_howto_table[r_type].name);
58255df3 1419 bfd_set_error (bfd_error_bad_value);
b34976b6 1420 return FALSE;
58255df3
HPN		 1421 }
1422
915e5146
HPN		 1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1429 break;
06c15ad7 1430
915e5146
HPN		 1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
06c15ad7 1434
915e5146
HPN		 1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
0a4787a0 1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN		 1438 break;
1439
1440 if (h->plt.offset == (bfd_vma) -1
1441 || splt == NULL)
1442 {
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1446 break;
1447 }
1448
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1451 + h->plt.offset);
1452 break;
1453
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1457 R_CRIS_32_GOT. */
1458 relocation -= sgot->output_section->vma;
1459
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
0a4787a0 1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN		 1463 break;
1464
1465 if (h->plt.offset == (bfd_vma) -1
1466 || splt == NULL)
1467 {
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1471 break;
1472 }
1473
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1476 + h->plt.offset
1477 - sgot->output_section->vma);
1478 break;
1479
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
0d08de41
HPN		 1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
915e5146
HPN		 1486 break;
1487
1488 /* Fall through. */
1489 case R_CRIS_8:
1490 case R_CRIS_16:
1491 case R_CRIS_32:
1492 if (info->shared
ec338859 1493 && r_symndx != 0
915e5146
HPN		 1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1498 || (!info->symbolic
02865b8e 1499 || (h != NULL && !h->def_regular))))
915e5146
HPN		 1500 {
1501 Elf_Internal_Rela outrel;
947216bf 1502 bfd_byte *loc;
b34976b6 1503 bfd_boolean skip, relocate;
915e5146
HPN		 1504
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1507 time. */
1508
1509 if (sreloc == NULL)
1510 {
83bac4b0
NC		 1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (input_bfd, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
915e5146
HPN		 1515 cris_elf_merge_private_bfd_data. */
1516 if (sreloc == NULL)
1517 {
915e5146 1518 bfd_set_error (bfd_error_bad_value);
b34976b6 1519 return FALSE;
915e5146
HPN		 1520 }
1521 }
1522
b34976b6
AM		 1523 skip = FALSE;
1524 relocate = FALSE;
915e5146 1525
c629eae0
JJ		 1526 outrel.r_offset =
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1528 rel->r_offset);
1529 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 1530 skip = TRUE;
0bb2d96a 1531 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 1532 skip = TRUE, relocate = TRUE;
915e5146
HPN		 1533 outrel.r_offset += (input_section->output_section->vma
1534 + input_section->output_offset);
1535
1536 if (skip)
0bb2d96a 1537 memset (&outrel, 0, sizeof outrel);
915e5146
HPN		 1538 /* h->dynindx may be -1 if the symbol was marked to
1539 become local. */
1540 else if (h != NULL
1541 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1542 || !h->def_regular))
915e5146
HPN		 1543 {
1544 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN		 1545 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1546 outrel.r_addend = relocation + rel->r_addend;
1547 }
1548 else
1549 {
74541ad4
AM		 1550 outrel.r_addend = relocation + rel->r_addend;
1551
915e5146
HPN		 1552 if (r_type == R_CRIS_32)
1553 {
b34976b6 1554 relocate = TRUE;
915e5146 1555 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
915e5146
HPN		 1556 }
1557 else
1558 {
1559 long indx;
1560
8517fae7 1561 if (bfd_is_abs_section (sec))
915e5146
HPN		 1562 indx = 0;
1563 else if (sec == NULL || sec->owner == NULL)
1564 {
1565 bfd_set_error (bfd_error_bad_value);
b34976b6 1566 return FALSE;
915e5146
HPN		 1567 }
1568 else
1569 {
1570 asection *osec;
1571
74541ad4
AM		 1572 /* We are turning this relocation into one
1573 against a section symbol. It would be
1574 proper to subtract the symbol's value,
1575 osec->vma, from the emitted reloc addend,
1576 but ld.so expects buggy relocs. */
915e5146
HPN		 1577 osec = sec->output_section;
1578 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 1579 if (indx == 0)
1580 {
1581 struct elf_cris_link_hash_table *htab;
1582 htab = elf_cris_hash_table (info);
1583 osec = htab->root.text_index_section;
1584 indx = elf_section_data (osec)->dynindx;
1585 }
1586 BFD_ASSERT (indx != 0);
915e5146
HPN		 1587 }
1588
915e5146 1589 outrel.r_info = ELF32_R_INFO (indx, r_type);
915e5146
HPN		 1590 }
1591 }
1592
947216bf
AM		 1593 loc = sreloc->contents;
1594 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1595 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN		 1596
1597 /* This reloc will be computed at runtime, so there's no
1598 need to do anything now, except for R_CRIS_32 relocations
1599 that have been turned into R_CRIS_RELATIVE. */
1600 if (!relocate)
1601 continue;
1602 }
1603
1604 break;
100382c7
HPN		 1605
1606 case R_CRIS_16_DTPREL:
1607 case R_CRIS_32_DTPREL:
1608 /* This relocation must only be performed against local
1609 symbols. It's also ok when we link a program and the
1610 symbol is defined in an ordinary (non-DSO) object (if
1611 it's undefined there, we've already seen an error). */
1612 if (h != NULL
1613 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1614 && (info->shared
1615 || (!h->def_regular
1616 && h->root.type != bfd_link_hash_undefined)))
1617 {
1618 (*_bfd_error_handler)
1619 ((h->root.type == bfd_link_hash_undefined)
1620 /* We shouldn't get here for GCC-emitted code. */
1621 ? _("%B, section %A: relocation %s has an undefined"
1622 " reference to `%s', perhaps a declaration mixup?")
1623 : ("%B, section %A: relocation %s is"
1624 " not allowed for `%s', a global symbol with default"
1625 " visibility, perhaps a declaration mixup?"),
1626 input_bfd,
1627 input_section,
1628 cris_elf_howto_table[r_type].name,
1629 symname != NULL && symname[0] != '\0'
1630 ? symname : _("[whose name is lost]"));
1631 bfd_set_error (bfd_error_bad_value);
1632 return FALSE;
1633 }
1634
1635 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1636
1637 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1638 already done so. Note that we do this in .got.plt, not
1639 in .got, as .got.plt contains the first part, still the
1640 reloc is against .got, because the linker script directs
1641 (is required to direct) them both into .got. */
1642 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1643 {
1644 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1645 BFD_ASSERT (sgotplt != NULL);
1646
1647 if (info->shared)
1648 {
1649 Elf_Internal_Rela outrel;
1650 bfd_byte *loc;
1651
1652 if (srelgot == NULL)
1653 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1654 BFD_ASSERT (srelgot != NULL);
1655 loc = srelgot->contents;
1656 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1657
1658 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1659 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1660 outrel.r_offset = (sgotplt->output_section->vma
1661 + sgotplt->output_offset
1662 + 12);
1663 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1664 outrel.r_addend = 0;
1665 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1666 }
1667 else
1668 {
1669 /* For an executable, the GOT entry contents is known. */
1670 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1671 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1672 }
1673
1674 /* Reverse the sign to mark that we've emitted the
1675 required GOT entry. */
1676 elf_cris_hash_table (info)->dtpmod_refcount
1677 = -elf_cris_hash_table (info)->dtpmod_refcount;
1678 }
1679
1680 /* The thread-based offset to the local symbol is the
1681 relocation. */
1682 relocation -= elf_hash_table (info)->tls_sec == NULL
1683 ? 0 : elf_hash_table (info)->tls_sec->vma;
1684 break;
1685
1686 case R_CRIS_32_GD:
1687 if (info->shared)
1688 {
1689 bfd_set_error (bfd_error_invalid_operation);
1690
1691 /* We've already informed in cris_elf_check_relocs that
1692 this is an error. */
1693 return FALSE;
1694 }
1695 /* Fall through. */
1696
1697 case R_CRIS_16_GOT_GD:
1698 case R_CRIS_32_GOT_GD:
1699 if (rel->r_addend != 0)
1700 {
1701 /* We can't do anything for a relocation which is against a
1702 symbol *plus offset*. The GOT holds relocations for
1703 symbols. Make this an error; the compiler isn't allowed
1704 to pass us these kinds of things. */
1705 (*_bfd_error_handler)
1706 (_("%B, section %A: relocation %s with non-zero addend %d"
1707 " against symbol `%s'"),
1708 input_bfd,
1709 input_section,
1710 cris_elf_howto_table[r_type].name,
1711 rel->r_addend,
1712 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1713
1714 bfd_set_error (bfd_error_bad_value);
1715 return FALSE;
1716 }
1717
1718 if (!info->shared && (h == NULL || h->def_regular))
1719 {
1720 /* Known contents of the GOT. */
1721 bfd_vma off;
1722
1723 /* The symbol is defined in the program, so just write
1724 (1, known_tpoffset) into the GOT. */
1725 relocation -= elf_hash_table (info)->tls_sec->vma;
1726
1727 if (h != NULL)
1728 {
1729 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1730 ? h->got.offset + 4 : h->got.offset;
1731 }
1732 else
1733 {
1734 off = local_got_offsets[r_symndx];
1735 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1736 off += 4;
1737 }
1738
1739 /* We use bit 1 of the offset as a flag for GOT entry with
1740 the R_CRIS_DTP reloc, setting it when we've emitted the
1741 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1742 relocs. */
1743 if ((off & 2) == 0)
1744 {
1745 off &= ~3;
1746
1747 if (h != NULL)
1748 h->got.offset |= 2;
1749 else
1750 local_got_offsets[r_symndx] |= 2;
1751
1752 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1753 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1754 }
1755 else
1756 off &= ~3;
1757
1758 relocation = sgot->output_offset + off
1759 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1760 }
1761 else
1762 {
1763 /* Not all parts of the GOT entry are known; emit a real
1764 relocation. */
1765 bfd_vma off;
1766
1767 if (h != NULL)
1768 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1769 ? h->got.offset + 4 : h->got.offset;
1770 else
1771 {
1772 off = local_got_offsets[r_symndx];
1773 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1774 off += 4;
1775 }
1776
1777 /* See above re bit 1 and bit 0 usage. */
1778 if ((off & 2) == 0)
1779 {
1780 Elf_Internal_Rela outrel;
1781 bfd_byte *loc;
1782
1783 off &= ~3;
1784
1785 if (h != NULL)
1786 h->got.offset |= 2;
1787 else
1788 local_got_offsets[r_symndx] |= 2;
1789
1790 /* Clear the target contents of the GOT (just as a
1791 gesture; it's already cleared on allocation): this
1792 relocation is not like the other dynrelocs. */
1793 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1794 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1795
1796 if (srelgot == NULL)
1797 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1798 BFD_ASSERT (srelgot != NULL);
1799
1800 if (h != NULL && h->dynindx != -1)
1801 {
1802 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1803 relocation = 0;
1804 }
1805 else
1806 {
1807 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1808
1809 /* NULL if we had an error. */
1810 relocation -= elf_hash_table (info)->tls_sec == NULL
1811 ? 0 : elf_hash_table (info)->tls_sec->vma;
1812 }
1813
1814 outrel.r_offset = (sgot->output_section->vma
1815 + sgot->output_offset
1816 + off);
1817 outrel.r_addend = relocation;
1818 loc = srelgot->contents;
1819 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1820
1821 /* NULL if we had an error. */
1822 if (srelgot->contents != NULL)
1823 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1824 }
1825 else
1826 off &= ~3;
1827
1828 relocation = sgot->output_offset + off
1829 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1830 }
1831
1832 /* The GOT-relative offset to the GOT entry is the
1833 relocation, or for R_CRIS_32_GD, the actual address of
1834 the GOT entry. */
1835 break;
1836
75f500d7
HPN		 1837 case R_CRIS_32_IE:
1838 if (info->shared)
1839 {
1840 bfd_set_error (bfd_error_invalid_operation);
1841
1842 /* We've already informed in cris_elf_check_relocs that
1843 this is an error. */
1844 return FALSE;
1845 }
1846 /* Fall through. */
1847
100382c7
HPN		 1848 case R_CRIS_32_GOT_TPREL:
1849 case R_CRIS_16_GOT_TPREL:
1850 if (rel->r_addend != 0)
1851 {
1852 /* We can't do anything for a relocation which is
1853 against a symbol *plus offset*. GOT holds
1854 relocations for symbols. Make this an error; the
1855 compiler isn't allowed to pass us these kinds of
1856 things. */
1857 (*_bfd_error_handler)
1858 (_("%B, section %A: relocation %s with non-zero addend %d"
1859 " against symbol `%s'"),
1860 input_bfd,
1861 input_section,
1862 cris_elf_howto_table[r_type].name,
1863 rel->r_addend,
1864 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1865 bfd_set_error (bfd_error_bad_value);
1866 return FALSE;
1867 }
1868
1869 if (!info->shared && (h == NULL || h->def_regular))
1870 {
1871 /* Known contents of the GOT. */
1872 bfd_vma off;
1873
1874 /* The symbol is defined in the program, so just write
1875 the known_tpoffset into the GOT. */
1876 relocation -= elf_hash_table (info)->tls_sec->vma;
1877
1878 if (h != NULL)
1879 off = h->got.offset;
1880 else
1881 off = local_got_offsets[r_symndx];
1882
1883 /* Bit 0 is used to mark whether we've emitted the required
1884 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1885 is used similarly for R_CRIS_DTP, see above. */
1886 if ((off & 1) == 0)
1887 {
1888 off &= ~3;
1889
1890 if (h != NULL)
1891 h->got.offset |= 1;
1892 else
1893 local_got_offsets[r_symndx] |= 1;
1894
1895 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1896 }
1897 else
1898 off &= ~3;
1899
75f500d7
HPN		 1900 relocation = sgot->output_offset + off
1901 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1902 }
1903 else
1904 {
1905 /* Emit a real relocation. */
1906 bfd_vma off;
1907
1908 if (h != NULL)
1909 off = h->got.offset;
1910 else
1911 off = local_got_offsets[r_symndx];
1912
1913 /* See above re usage of bit 0 and 1. */
1914 if ((off & 1) == 0)
1915 {
1916 Elf_Internal_Rela outrel;
1917 bfd_byte *loc;
1918
1919 off &= ~3;
1920
1921 if (h != NULL)
1922 h->got.offset |= 1;
1923 else
1924 local_got_offsets[r_symndx] |= 1;
1925
1926 if (srelgot == NULL)
1927 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1928 BFD_ASSERT (srelgot != NULL);
1929
1930 if (h != NULL && h->dynindx != -1)
1931 {
1932 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1933 relocation = 0;
1934 }
1935 else
1936 {
1937 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1938
1939 /* NULL if we had an error. */
1940 relocation -= elf_hash_table (info)->tls_sec == NULL
1941 ? 0 : elf_hash_table (info)->tls_sec->vma;
1942 }
1943
1944 /* Just "define" the initial contents in some
1945 semi-logical way. */
1946 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1947
1948 outrel.r_offset = (sgot->output_section->vma
1949 + sgot->output_offset
1950 + off);
1951 outrel.r_addend = relocation;
1952 loc = srelgot->contents;
1953 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1954 /* NULL if we had an error. */
1955 if (srelgot->contents != NULL)
1956 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1957 }
1958 else
1959 off &= ~3;
1960
75f500d7
HPN		 1961 relocation = sgot->output_offset + off
1962 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1963 }
1964
75f500d7
HPN		 1965 /* The GOT-relative offset to the GOT entry is the relocation,
1966 or for R_CRIS_32_GD, the actual address of the GOT entry. */
100382c7
HPN		 1967 break;
1968
1969 case R_CRIS_16_TPREL:
1970 case R_CRIS_32_TPREL:
1971 /* This relocation must only be performed against symbols
1972 defined in an ordinary (non-DSO) object. */
1973 if (info->shared)
1974 {
1975 bfd_set_error (bfd_error_invalid_operation);
1976
1977 /* We've already informed in cris_elf_check_relocs that
1978 this is an error. */
1979 return FALSE;
1980 }
1981
1982 if (h != NULL
1983 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1984 && !h->def_regular
1985 /* If it's undefined, then an error message has already
1986 been emitted. */
1987 && h->root.type != bfd_link_hash_undefined)
1988 {
1989 (*_bfd_error_handler)
1990 (_("%B, section %A: relocation %s is"
1991 " not allowed for symbol: `%s'"
1992 " which is defined outside the program,"
1993 " perhaps a declaration mixup?"),
1994 input_bfd,
1995 input_section,
1996 cris_elf_howto_table[r_type].name,
1997 symname);
1998 bfd_set_error (bfd_error_bad_value);
1999 return FALSE;
2000 }
2001
2002 /* NULL if we had an error. */
2003 relocation -= elf_hash_table (info)->tls_sec == NULL
2004 ? 0 : elf_hash_table (info)->tls_sec->vma;
2005
2006 /* The TLS-relative offset is the relocation. */
2007 break;
2008
2009 default:
2010 BFD_FAIL ();
2011 return FALSE;
915e5146
HPN		 2012 }
2013
2014 r = cris_final_link_relocate (howto, input_bfd, input_section,
2015 contents, rel, relocation);
2016
2017 if (r != bfd_reloc_ok)
2018 {
2019 const char * msg = (const char *) NULL;
2020
2021 switch (r)
2022 {
2023 case bfd_reloc_overflow:
2024 r = info->callbacks->reloc_overflow
dfeffb9f
L		 2025 (info, (h ? &h->root : NULL), symname, howto->name,
2026 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
100382c7
HPN		 2027 if (additional_relocation_error_msg_count > 0)
2028 {
2029 additional_relocation_error_msg_count--;
2030 switch (r_type)
2031 {
2032 case R_CRIS_16_GOTPLT:
2033 case R_CRIS_16_GOT:
2034
2035 /* Not just TLS is involved here, so we make
2036 generation and message depend on -fPIC/-fpic
2037 only. */
2038 case R_CRIS_16_GOT_TPREL:
2039 case R_CRIS_16_GOT_GD:
2040 (*_bfd_error_handler)
2041 (_("(too many global variables for -fpic:"
2042 " recompile with -fPIC)"));
2043 break;
2044
2045 case R_CRIS_16_TPREL:
2046 case R_CRIS_16_DTPREL:
2047 (*_bfd_error_handler)
2048 (_("(thread-local data too big for -fpic or"
2049 " -msmall-tls: recompile with -fPIC or"
2050 " -mno-small-tls)"));
2051 break;
2052
2053 /* No known cause for overflow for other relocs. */
2054 default:
2055 break;
2056 }
2057 }
915e5146
HPN		 2058 break;
2059
2060 case bfd_reloc_undefined:
2061 r = info->callbacks->undefined_symbol
dc810e39 2062 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 2063 TRUE);
915e5146
HPN		 2064 break;
2065
2066 case bfd_reloc_outofrange:
2067 msg = _("internal error: out of range error");
2068 break;
2069
2070 case bfd_reloc_notsupported:
2071 msg = _("internal error: unsupported relocation error");
2072 break;
2073
2074 case bfd_reloc_dangerous:
2075 msg = _("internal error: dangerous relocation");
2076 break;
2077
2078 default:
2079 msg = _("internal error: unknown error");
2080 break;
2081 }
2082
2083 if (msg)
2084 r = info->callbacks->warning
dc810e39 2085 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN		 2086
2087 if (! r)
b34976b6 2088 return FALSE;
915e5146
HPN		 2089 }
2090 }
2091
b34976b6 2092 return TRUE;
915e5146
HPN		 2093}
2094\f
2095/* Finish up dynamic symbol handling. We set the contents of various
2096 dynamic sections here. */
2097
b34976b6 2098static bfd_boolean
915e5146
HPN		 2099elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2100 bfd *output_bfd;
2101 struct bfd_link_info *info;
2102 struct elf_link_hash_entry *h;
2103 Elf_Internal_Sym *sym;
2104{
2105 bfd *dynobj;
bac23f82
HPN		 2106
2107 /* Where in the plt entry to put values. */
915e5146
HPN		 2108 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2109
bac23f82
HPN		 2110 /* What offset to add to the distance to the first PLT entry for the
2111 value at plt_off3. */
2112 int plt_off3_value_bias = 4;
2113
2114 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2115 for PIC and non-PIC for v32 and pre-v32). */
2116 int plt_stub_offset = 8;
2117 int plt_entry_size = PLT_ENTRY_SIZE;
2118 const bfd_byte *plt_entry = elf_cris_plt_entry;
2119 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2120
2121 /* Adjust the various PLT entry offsets. */
2122 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2123 {
2124 plt_off2 = 14;
2125 plt_off3 = 20;
2126 plt_off3_value_bias = -2;
2127 plt_stub_offset = 12;
2128 plt_entry_size = PLT_ENTRY_SIZE_V32;
2129 plt_entry = elf_cris_plt_entry_v32;
2130 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2131 }
2132
915e5146
HPN		 2133 dynobj = elf_hash_table (info)->dynobj;
2134
2135 if (h->plt.offset != (bfd_vma) -1)
2136 {
2137 asection *splt;
2138 asection *sgotplt;
2139 asection *sgot;
2140 asection *srela;
2141 bfd_vma got_base;
2142
2143 bfd_vma gotplt_offset
100382c7 2144 = elf_cris_hash_entry (h)->gotplt_offset;
915e5146 2145 Elf_Internal_Rela rela;
947216bf 2146 bfd_byte *loc;
b34976b6 2147 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146 2148
0bdf8d40
HPN		 2149 /* Get the index in the .rela.plt relocations for the .got.plt
2150 entry that corresponds to this symbol.
2151 We have to count backwards here, and the result is only valid
2152 as an index into .rela.plt. We also have to undo the effect
2153 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2154 .got.plt) for which gotplt_offset is adjusted, because while
2155 that entry goes into .got.plt, its relocation goes into
2156 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2157 processed as part of the runtime lazy .rela.plt relocation).
2158 FIXME: There be literal constants here... */
2159 bfd_vma rela_plt_index
2160 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2161 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
915e5146
HPN		 2162
2163 /* Get the offset into the .got table of the entry that corresponds
2164 to this function. Note that we embed knowledge that "incoming"
2165 .got goes after .got.plt in the output without padding (pointer
2166 aligned). However, that knowledge is present in several other
c152c796 2167 places too. */
915e5146
HPN		 2168 bfd_vma got_offset
2169 = (has_gotplt
2170 ? gotplt_offset
2171 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2172
2173 /* This symbol has an entry in the procedure linkage table. Set it
2174 up. */
2175
2176 BFD_ASSERT (h->dynindx != -1);
2177
2178 splt = bfd_get_section_by_name (dynobj, ".plt");
2179 sgot = bfd_get_section_by_name (dynobj, ".got");
2180 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2181 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2182 BFD_ASSERT (splt != NULL && sgotplt != NULL
2183 && (! has_gotplt || srela != NULL));
2184
2185 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2186
2187 /* Fill in the entry in the procedure linkage table. */
2188 if (! info->shared)
2189 {
bac23f82
HPN		 2190 memcpy (splt->contents + h->plt.offset, plt_entry,
2191 plt_entry_size);
915e5146
HPN		 2192
2193 /* We need to enter the absolute address of the GOT entry here. */
2194 bfd_put_32 (output_bfd, got_base + got_offset,
2195 splt->contents + h->plt.offset + plt_off1);
2196 }
2197 else
2198 {
bac23f82
HPN		 2199 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2200 plt_entry_size);
915e5146
HPN		 2201 bfd_put_32 (output_bfd, got_offset,
2202 splt->contents + h->plt.offset + plt_off1);
2203 }
2204
2205 /* Fill in the plt entry and make a relocation, if this is a "real"
2206 PLT entry. */
2207 if (has_gotplt)
2208 {
bac23f82 2209 /* Fill in the offset to the reloc table. */
915e5146 2210 bfd_put_32 (output_bfd,
0bdf8d40 2211 rela_plt_index * sizeof (Elf32_External_Rela),
915e5146
HPN		 2212 splt->contents + h->plt.offset + plt_off2);
2213
2214 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN		 2215 bfd_put_32 (output_bfd,
2216 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN		 2217 splt->contents + h->plt.offset + plt_off3);
2218
2219 /* Fill in the entry in the global offset table with the address of
2220 the relocating stub. */
2221 bfd_put_32 (output_bfd,
2222 (splt->output_section->vma
2223 + splt->output_offset
2224 + h->plt.offset
bac23f82 2225 + plt_stub_offset),
915e5146
HPN		 2226 sgotplt->contents + got_offset);
2227
2228 /* Fill in the entry in the .rela.plt section. */
2229 rela.r_offset = (sgotplt->output_section->vma
2230 + sgotplt->output_offset
2231 + got_offset);
2232 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2233 rela.r_addend = 0;
0bdf8d40 2234 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
947216bf 2235 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2236 }
2237
f5385ebf 2238 if (!h->def_regular)
915e5146
HPN		 2239 {
2240 /* Mark the symbol as undefined, rather than as defined in
2241 the .plt section. Leave the value alone. */
2242 sym->st_shndx = SHN_UNDEF;
2243
2244 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2245 know whether resetting the value is significant; if it really
2246 is, rather than a quirk or bug in the sparc port, then I
2247 believe we'd see this elsewhere. */
2248 /* If the symbol is weak, we do need to clear the value.
2249 Otherwise, the PLT entry would provide a definition for
2250 the symbol even if the symbol wasn't defined anywhere,
2251 and so the symbol would never be NULL. */
f5385ebf 2252 if (!h->ref_regular_nonweak)
915e5146
HPN		 2253 sym->st_value = 0;
2254 }
2255 }
2256
e4a2175c
HPN		 2257 /* For an ordinary program, we emit .got relocs only for symbols that
2258 are in the dynamic-symbols table and are either defined by the
2259 program or are undefined weak symbols, or are function symbols
2260 where we do not output a PLT: the PLT reloc was output above and all
2261 references to the function symbol are redirected to the PLT. */
4d96d128 2262 if (h->got.offset != (bfd_vma) -1
100382c7 2263 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
6849c52f
HPN		 2264 && (info->shared
2265 || (h->dynindx != -1
e4a2175c 2266 && h->plt.offset == (bfd_vma) -1
f5385ebf 2267 && !h->def_regular
6849c52f 2268 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN		 2269 {
2270 asection *sgot;
2271 asection *srela;
2272 Elf_Internal_Rela rela;
947216bf 2273 bfd_byte *loc;
dc810e39 2274 bfd_byte *where;
915e5146
HPN		 2275
2276 /* This symbol has an entry in the global offset table. Set it up. */
2277
2278 sgot = bfd_get_section_by_name (dynobj, ".got");
2279 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2280 BFD_ASSERT (sgot != NULL && srela != NULL);
2281
2282 rela.r_offset = (sgot->output_section->vma
2283 + sgot->output_offset
dc810e39 2284 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN		 2285
2286 /* If this is a static link, or it is a -Bsymbolic link and the
2287 symbol is defined locally or was forced to be local because
2288 of a version file, we just want to emit a RELATIVE reloc.
2289 The entry in the global offset table will already have been
2290 initialized in the relocate_section function. */
dc810e39 2291 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN		 2292 if (! elf_hash_table (info)->dynamic_sections_created
2293 || (info->shared
2294 && (info->symbolic || h->dynindx == -1)
f5385ebf 2295 && h->def_regular))
915e5146
HPN		 2296 {
2297 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 2298 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN		 2299 }
2300 else
2301 {
dc810e39 2302 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN		 2303 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2304 rela.r_addend = 0;
2305 }
2306
947216bf
AM		 2307 loc = srela->contents;
2308 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2309 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2310 }
2311
f5385ebf 2312 if (h->needs_copy)
915e5146
HPN		 2313 {
2314 asection *s;
2315 Elf_Internal_Rela rela;
947216bf 2316 bfd_byte *loc;
915e5146
HPN		 2317
2318 /* This symbol needs a copy reloc. Set it up. */
2319
2320 BFD_ASSERT (h->dynindx != -1
2321 && (h->root.type == bfd_link_hash_defined
2322 || h->root.type == bfd_link_hash_defweak));
2323
2324 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2325 ".rela.bss");
2326 BFD_ASSERT (s != NULL);
2327
2328 rela.r_offset = (h->root.u.def.value
2329 + h->root.u.def.section->output_section->vma
2330 + h->root.u.def.section->output_offset);
2331 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2332 rela.r_addend = 0;
947216bf
AM		 2333 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2334 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2335 }
2336
2337 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2338 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 2339 || h == elf_hash_table (info)->hgot)
915e5146
HPN		 2340 sym->st_shndx = SHN_ABS;
2341
b34976b6 2342 return TRUE;
915e5146
HPN		 2343}
2344\f
100382c7
HPN		 2345/* Finish up the dynamic sections. Do *not* emit relocs here, as their
2346 offsets were changed, as part of -z combreloc handling, from those we
2347 computed. */
915e5146 2348
b34976b6 2349static bfd_boolean
915e5146
HPN		 2350elf_cris_finish_dynamic_sections (output_bfd, info)
2351 bfd *output_bfd;
2352 struct bfd_link_info *info;
2353{
2354 bfd *dynobj;
2355 asection *sgot;
2356 asection *sdyn;
2357
2358 dynobj = elf_hash_table (info)->dynobj;
2359
2360 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2361 BFD_ASSERT (sgot != NULL);
2362 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2363
2364 if (elf_hash_table (info)->dynamic_sections_created)
2365 {
2366 asection *splt;
2367 Elf32_External_Dyn *dyncon, *dynconend;
2368
2369 splt = bfd_get_section_by_name (dynobj, ".plt");
2370 BFD_ASSERT (splt != NULL && sdyn != NULL);
2371
2372 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 2373 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN		 2374 for (; dyncon < dynconend; dyncon++)
2375 {
2376 Elf_Internal_Dyn dyn;
2377 asection *s;
2378
2379 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2380
2381 switch (dyn.d_tag)
2382 {
2383 default:
2384 break;
2385
2386 case DT_PLTGOT:
2387 s = bfd_get_section_by_name (output_bfd, ".got");
2388 BFD_ASSERT (s != NULL);
2389 dyn.d_un.d_ptr = s->vma;
2390 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2391 break;
2392
2393 case DT_JMPREL:
2394 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2395 if all symbols are found in the .got (not .got.plt). */
2396 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2397 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2398 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2399 break;
2400
2401 case DT_PLTRELSZ:
2402 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2403 if (s == NULL)
2404 dyn.d_un.d_val = 0;
915e5146 2405 else
eea6121a 2406 dyn.d_un.d_val = s->size;
915e5146
HPN		 2407 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2408 break;
2409
2410 case DT_RELASZ:
2411 /* The procedure linkage table relocs (DT_JMPREL) should
2412 not be included in the overall relocs (DT_RELA).
2413 Therefore, we override the DT_RELASZ entry here to
2414 make it not include the JMPREL relocs. Since the
2415 linker script arranges for .rela.plt to follow all
2416 other relocation sections, we don't have to worry
2417 about changing the DT_RELA entry. */
2418 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2419 if (s != NULL)
eea6121a 2420 dyn.d_un.d_val -= s->size;
915e5146
HPN		 2421 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2422 break;
2423 }
2424 }
2425
2426 /* Fill in the first entry in the procedure linkage table. */
eea6121a 2427 if (splt->size > 0)
915e5146 2428 {
bac23f82
HPN		 2429 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2430 {
2431 if (info->shared)
2432 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2433 PLT_ENTRY_SIZE_V32);
2434 else
2435 {
2436 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2437 PLT_ENTRY_SIZE_V32);
2438 bfd_put_32 (output_bfd,
2439 sgot->output_section->vma
2440 + sgot->output_offset + 4,
2441 splt->contents + 4);
2442
2443 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2444 = PLT_ENTRY_SIZE_V32;
2445 }
2446 }
915e5146 2447 else
bac23f82
HPN		 2448 {
2449 if (info->shared)
2450 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2451 PLT_ENTRY_SIZE);
2452 else
2453 {
2454 memcpy (splt->contents, elf_cris_plt0_entry,
2455 PLT_ENTRY_SIZE);
2456 bfd_put_32 (output_bfd,
2457 sgot->output_section->vma
2458 + sgot->output_offset + 4,
2459 splt->contents + 6);
2460 bfd_put_32 (output_bfd,
2461 sgot->output_section->vma
2462 + sgot->output_offset + 8,
2463 splt->contents + 14);
2464
2465 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2466 = PLT_ENTRY_SIZE;
2467 }
915e5146
HPN		 2468 }
2469 }
2470 }
2471
2472 /* Fill in the first three entries in the global offset table. */
eea6121a 2473 if (sgot->size > 0)
915e5146
HPN		 2474 {
2475 if (sdyn == NULL)
2476 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2477 else
2478 bfd_put_32 (output_bfd,
2479 sdyn->output_section->vma + sdyn->output_offset,
2480 sgot->contents);
2481 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2482 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2483 }
2484
2485 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2486
b34976b6 2487 return TRUE;
06c15ad7
HPN		 2488}
2489\f
2490/* Return the section that should be marked against GC for a given
2491 relocation. */
2492
2493static asection *
07adf181
AM		 2494cris_elf_gc_mark_hook (asection *sec,
2495 struct bfd_link_info *info,
2496 Elf_Internal_Rela *rel,
2497 struct elf_link_hash_entry *h,
2498 Elf_Internal_Sym *sym)
06c15ad7 2499{
100382c7 2500 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
06c15ad7 2501 if (h != NULL)
100382c7 2502 switch (r_type)
07adf181
AM		 2503 {
2504 case R_CRIS_GNU_VTINHERIT:
2505 case R_CRIS_GNU_VTENTRY:
2506 return NULL;
100382c7
HPN		 2507
2508 default:
2509 break;
07adf181 2510 }
06c15ad7 2511
07adf181 2512 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN		 2513}
2514
2515/* Update the got entry reference counts for the section being removed. */
2516
b34976b6 2517static bfd_boolean
07adf181
AM		 2518cris_elf_gc_sweep_hook (bfd *abfd,
2519 struct bfd_link_info *info,
2520 asection *sec,
2521 const Elf_Internal_Rela *relocs)
06c15ad7 2522{
915e5146
HPN		 2523 Elf_Internal_Shdr *symtab_hdr;
2524 struct elf_link_hash_entry **sym_hashes;
2525 bfd_signed_vma *local_got_refcounts;
2526 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN		 2527 bfd *dynobj;
2528 asection *sgot;
2529 asection *srelgot;
2530
7dda2462
TG		 2531 if (info->relocatable)
2532 return TRUE;
2533
915e5146
HPN		 2534 dynobj = elf_hash_table (info)->dynobj;
2535 if (dynobj == NULL)
b34976b6 2536 return TRUE;
915e5146 2537
babfd660
KH		 2538 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2539 sym_hashes = elf_sym_hashes (abfd);
2540 local_got_refcounts = elf_local_got_refcounts (abfd);
2541
915e5146
HPN		 2542 sgot = bfd_get_section_by_name (dynobj, ".got");
2543 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2544
2545 relend = relocs + sec->reloc_count;
2546 for (rel = relocs; rel < relend; rel++)
2547 {
babfd660 2548 unsigned long r_symndx;
3eb128b2 2549 struct elf_link_hash_entry *h = NULL;
100382c7
HPN		 2550 bfd_signed_vma got_element_size = 4;
2551 bfd_signed_vma *specific_refcount = NULL;
2552 enum elf_cris_reloc_type r_type;
3eb128b2
AM		 2553
2554 r_symndx = ELF32_R_SYM (rel->r_info);
2555 if (r_symndx >= symtab_hdr->sh_info)
2556 {
2557 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2558 while (h->root.type == bfd_link_hash_indirect
2559 || h->root.type == bfd_link_hash_warning)
2560 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2561 }
babfd660 2562
100382c7
HPN		 2563 r_type = ELF32_R_TYPE (rel->r_info);
2564 switch (r_type)
2565 {
2566 case R_CRIS_32_GOT:
2567 case R_CRIS_16_GOT:
2568 case R_CRIS_16_GOTPLT:
2569 case R_CRIS_32_GOTPLT:
2570 specific_refcount = h != NULL
2571 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2572 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2573 break;
2574
2575 case R_CRIS_32_GD:
2576 case R_CRIS_32_GOT_GD:
2577 case R_CRIS_16_GOT_GD:
2578 got_element_size = 8;
2579 specific_refcount = h != NULL
2580 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2581 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2582 break;
2583
75f500d7 2584 case R_CRIS_32_IE:
100382c7
HPN		 2585 case R_CRIS_16_GOT_TPREL:
2586 case R_CRIS_32_GOT_TPREL:
2587 specific_refcount = h != NULL
2588 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2589 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2590 break;
2591
2592 default:
2593 break;
2594 }
2595
2596 switch (r_type)
915e5146 2597 {
75f500d7 2598 case R_CRIS_32_IE:
100382c7
HPN		 2599 case R_CRIS_32_GD:
2600 case R_CRIS_16_GOT_TPREL:
2601 case R_CRIS_32_GOT_TPREL:
2602 case R_CRIS_32_GOT_GD:
2603 case R_CRIS_16_GOT_GD:
915e5146
HPN		 2604 case R_CRIS_16_GOT:
2605 case R_CRIS_32_GOT:
3eb128b2 2606 if (h != NULL)
915e5146 2607 {
100382c7
HPN		 2608 /* If the counters are 0 when we got here, we've
2609 miscounted somehow somewhere, an internal error. */
2610 BFD_ASSERT (h->got.refcount > 0);
2611 --h->got.refcount;
2612
2613 BFD_ASSERT (*specific_refcount > 0);
2614 --*specific_refcount;
2615 if (*specific_refcount == 0)
915e5146 2616 {
100382c7
HPN		 2617 /* We don't need the .got entry any more. */
2618 sgot->size -= got_element_size;
2619 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2620 }
2621 break;
2622 }
2623
2624 local_got_reloc:
2625 if (local_got_refcounts != NULL)
2626 {
100382c7
HPN		 2627 /* If the counters are 0 when we got here, we've
2628 miscounted somehow somewhere, an internal error. */
2629 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2630 --local_got_refcounts[r_symndx];
2631
2632 BFD_ASSERT (*specific_refcount > 0);
2633 --*specific_refcount;
2634 if (*specific_refcount == 0)
915e5146 2635 {
100382c7
HPN		 2636 /* We don't need the .got entry any more. */
2637 sgot->size -= got_element_size;
2638 if (info->shared)
2639 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2640 }
2641 }
2642 break;
2643
2644 case R_CRIS_16_GOTPLT:
2645 case R_CRIS_32_GOTPLT:
2646 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2647 if (h == NULL)
915e5146 2648 goto local_got_reloc;
e4a2175c 2649 /* Fall through. */
3eb128b2 2650
915e5146
HPN		 2651 case R_CRIS_32_PLT_GOTREL:
2652 /* FIXME: We don't garbage-collect away the .got section. */
2653 if (local_got_refcounts != NULL)
2654 local_got_refcounts[-1]--;
2655 /* Fall through. */
3eb128b2 2656
915e5146
HPN		 2657 case R_CRIS_8_PCREL:
2658 case R_CRIS_16_PCREL:
2659 case R_CRIS_32_PCREL:
2660 case R_CRIS_32_PLT_PCREL:
3eb128b2 2661 if (h != NULL)
915e5146 2662 {
0a4787a0
HPN		 2663 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2664 && h->plt.refcount > 0)
915e5146
HPN		 2665 --h->plt.refcount;
2666 }
2667 break;
2668
100382c7
HPN		 2669 case R_CRIS_32_DTPREL:
2670 case R_CRIS_16_DTPREL:
2671 elf_cris_hash_table (info)->dtpmod_refcount--;
2672 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2673 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2674 BFD_ASSERT (local_got_refcounts != NULL);
2675 local_got_refcounts[-1]--;
2676 break;
2677
915e5146
HPN		 2678 default:
2679 break;
2680 }
2681 }
2682
b34976b6 2683 return TRUE;
06c15ad7
HPN		 2684}
2685
915e5146
HPN		 2686/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2687 entry but we found we will not create any. Called when we find we will
4d96d128
HPN		 2688 not have any PLT for this symbol, by for example
2689 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2690 or elf_cris_size_dynamic_sections if no dynamic sections will be
2691 created (we're only linking static objects). */
915e5146 2692
b34976b6 2693static bfd_boolean
915e5146
HPN		 2694elf_cris_adjust_gotplt_to_got (h, p)
2695 struct elf_cris_link_hash_entry *h;
2696 PTR p;
2697{
2698 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2699
e92d460e
AM		 2700 if (h->root.root.type == bfd_link_hash_warning)
2701 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2702
915e5146
HPN		 2703 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2704 if (h->gotplt_refcount <= 0)
b34976b6 2705 return TRUE;
915e5146 2706
100382c7 2707 if (h->reg_got_refcount > 0)
915e5146 2708 {
100382c7
HPN		 2709 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2710 Probably not necessary at this stage, but keeping them accurate
915e5146
HPN		 2711 helps avoiding surprises later. */
2712 h->root.got.refcount += h->gotplt_refcount;
100382c7 2713 h->reg_got_refcount += h->gotplt_refcount;
5e0f5ae3 2714 h->gotplt_refcount = 0;
915e5146
HPN		 2715 }
2716 else
2717 {
4d96d128 2718 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM		 2719 bfd *dynobj = elf_hash_table (info)->dynobj;
2720 asection *sgot;
2721 asection *srelgot;
2722
2723 BFD_ASSERT (dynobj != NULL);
2724 sgot = bfd_get_section_by_name (dynobj, ".got");
2725 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146 2726
100382c7
HPN		 2727 /* Put accurate refcounts there. */
2728 h->root.got.refcount += h->gotplt_refcount;
2729 h->reg_got_refcount = h->gotplt_refcount;
915e5146 2730
5e0f5ae3 2731 h->gotplt_refcount = 0;
915e5146 2732
44aa49bb
HPN		 2733 /* We always have a .got and a .rela.got section if there were
2734 GOTPLT relocs in input. */
2735 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN		 2736
2737 /* Allocate space in the .got section. */
eea6121a 2738 sgot->size += 4;
915e5146
HPN		 2739
2740 /* Allocate relocation space. */
eea6121a 2741 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 2742 }
2743
b34976b6 2744 return TRUE;
915e5146
HPN		 2745}
2746
2747/* Try to fold PLT entries with GOT entries. There are two cases when we
2748 want to do this:
2749
2750 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN		 2751 references, and this is not the executable. We don't have to
2752 generate a PLT at all.
915e5146 2753
e4a2175c
HPN		 2754 - When there are both (ordinary) PLT references and GOT references,
2755 and this isn't the executable.
915e5146 2756 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN		 2757 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2758 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN		 2759
2760 Though the latter case is handled when room for the PLT is allocated,
2761 not here.
2762
e4a2175c
HPN		 2763 By folding into the GOT, we may need a round-trip to a PLT in the
2764 executable for calls, a loss in performance. Still, losing a
2765 reloc is a win in size and at least in start-up time.
2766
915e5146
HPN		 2767 Note that this function is called before symbols are forced local by
2768 version scripts. The differing cases are handled by
2769 elf_cris_hide_symbol. */
2770
b34976b6 2771static bfd_boolean
915e5146
HPN		 2772elf_cris_try_fold_plt_to_got (h, p)
2773 struct elf_cris_link_hash_entry *h;
2774 PTR p;
2775{
2776 struct bfd_link_info *info = (struct bfd_link_info *) p;
2777
2778 /* If there are no GOT references for this symbol, we can't fold any
2779 other reference so there's nothing to do. Likewise if there are no
2780 PLT references; GOTPLT references included. */
2781 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2782 return TRUE;
915e5146
HPN		 2783
2784 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2785 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2786
2787 if (h->gotplt_refcount == h->root.plt.refcount)
2788 {
4d96d128 2789 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN		 2790 references. Convert PLT to GOT references. */
2791 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2792 return FALSE;
915e5146
HPN		 2793
2794 /* Clear the PLT references, so no PLT will be created. */
2795 h->root.plt.offset = (bfd_vma) -1;
2796 }
2797
b34976b6 2798 return TRUE;
915e5146
HPN		 2799}
2800
2801/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2802 to use a GOT entry (and create one) rather than requiring a GOTPLT
2803 entry. */
2804
2805static void
e5094212 2806elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN		 2807 struct bfd_link_info *info;
2808 struct elf_link_hash_entry *h;
b34976b6 2809 bfd_boolean force_local;
915e5146
HPN		 2810{
2811 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2812
e5094212 2813 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN		 2814}
2815
2816/* Adjust a symbol defined by a dynamic object and referenced by a
2817 regular object. The current definition is in some section of the
2818 dynamic object, but we're not including those sections. We have to
2819 change the definition to something the rest of the link can
2820 understand. */
2821
b34976b6 2822static bfd_boolean
915e5146
HPN		 2823elf_cris_adjust_dynamic_symbol (info, h)
2824 struct bfd_link_info *info;
2825 struct elf_link_hash_entry *h;
2826{
2827 bfd *dynobj;
2828 asection *s;
bac23f82 2829 bfd_size_type plt_entry_size;
915e5146
HPN		 2830
2831 dynobj = elf_hash_table (info)->dynobj;
2832
2833 /* Make sure we know what is going on here. */
2834 BFD_ASSERT (dynobj != NULL
f5385ebf 2835 && (h->needs_plt
f6e332e6 2836 || h->u.weakdef != NULL
f5385ebf
AM		 2837 || (h->def_dynamic
2838 && h->ref_regular
2839 && !h->def_regular)));
915e5146 2840
bac23f82
HPN		 2841 plt_entry_size
2842 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2843 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2844
915e5146
HPN		 2845 /* If this is a function, put it in the procedure linkage table. We
2846 will fill in the contents of the procedure linkage table later,
2847 when we know the address of the .got section. */
2848 if (h->type == STT_FUNC
f5385ebf 2849 || h->needs_plt)
915e5146 2850 {
6849c52f
HPN		 2851 /* If we link a program (not a DSO), we'll get rid of unnecessary
2852 PLT entries; we point to the actual symbols -- even for pic
2853 relocs, because a program built with -fpic should have the same
2854 result as one built without -fpic, specifically considering weak
2855 symbols.
2856 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2857 if (! info->shared
f5385ebf 2858 && !h->def_dynamic)
915e5146
HPN		 2859 {
2860 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN		 2861 but the symbol was not defined by a dynamic object. In such
2862 a case, we don't actually need to build a procedure linkage
2863 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2864 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM		 2865 BFD_ASSERT (h->needs_plt);
2866 h->needs_plt = 0;
915e5146 2867 h->plt.offset = (bfd_vma) -1;
915e5146
HPN		 2868 return
2869 elf_cris_adjust_gotplt_to_got ((struct
2870 elf_cris_link_hash_entry *) h,
2871 info);
2872 }
2873
e4a2175c
HPN		 2874 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2875 where a pointer-equivalent symbol was unimportant (i.e. more
2876 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2877 of the PLT. We can't for the executable, because the GOT
2878 entries will point to the PLT there (and be constant). */
2879 if (info->shared
2880 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2881 h, info))
b34976b6 2882 return FALSE;
915e5146
HPN		 2883
2884 /* GC or folding may have rendered this entry unused. */
2885 if (h->plt.refcount <= 0)
2886 {
f5385ebf 2887 h->needs_plt = 0;
915e5146 2888 h->plt.offset = (bfd_vma) -1;
b34976b6 2889 return TRUE;
915e5146
HPN		 2890 }
2891
2892 /* Make sure this symbol is output as a dynamic symbol. */
2893 if (h->dynindx == -1)
2894 {
c152c796 2895 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2896 return FALSE;
915e5146
HPN		 2897 }
2898
2899 s = bfd_get_section_by_name (dynobj, ".plt");
2900 BFD_ASSERT (s != NULL);
2901
2902 /* If this is the first .plt entry, make room for the special
2903 first entry. */
eea6121a 2904 if (s->size == 0)
bac23f82 2905 s->size += plt_entry_size;
915e5146
HPN		 2906
2907 /* If this symbol is not defined in a regular file, and we are
2908 not generating a shared library, then set the symbol to this
6849c52f 2909 location in the .plt. */
915e5146 2910 if (!info->shared
f5385ebf 2911 && !h->def_regular)
915e5146
HPN		 2912 {
2913 h->root.u.def.section = s;
eea6121a 2914 h->root.u.def.value = s->size;
915e5146
HPN		 2915 }
2916
4d96d128
HPN		 2917 /* If there's already a GOT entry, use that, not a .got.plt. A
2918 GOT field still has a reference count when we get here; it's
e4a2175c
HPN		 2919 not yet changed to an offset. We can't do this for an
2920 executable, because then the reloc associated with the PLT
2921 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2922 this to elf_cris_try_fold_plt_to_got. */
2923 if (info->shared && h->got.refcount > 0)
915e5146
HPN		 2924 {
2925 h->got.refcount += h->plt.refcount;
2926
2927 /* Mark the PLT offset to use the GOT entry by setting the low
2928 bit in the plt offset; it is always a multiple of
bac23f82
HPN		 2929 plt_entry_size (which is at least a multiple of 2). */
2930 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN		 2931
2932 /* Change the PLT refcount to an offset. */
eea6121a 2933 h->plt.offset = s->size;
915e5146
HPN		 2934
2935 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2936 that the got entry should be used instead. */
2937 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2938 h)->gotplt_offset == 0);
2939
2940 /* Make room for this entry. */
bac23f82 2941 s->size += plt_entry_size;
915e5146 2942
b34976b6 2943 return TRUE;
915e5146
HPN		 2944 }
2945
2946 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2947 h->plt.offset = s->size;
915e5146
HPN		 2948
2949 /* Make room for this entry. */
bac23f82 2950 s->size += plt_entry_size;
915e5146
HPN		 2951
2952 /* We also need to make an entry in the .got.plt section, which
2953 will be placed in the .got section by the linker script. */
2954 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2955 = elf_cris_hash_table (info)->next_gotplt_entry;
2956 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2957
2958 s = bfd_get_section_by_name (dynobj, ".got.plt");
2959 BFD_ASSERT (s != NULL);
eea6121a 2960 s->size += 4;
915e5146
HPN		 2961
2962 /* We also need to make an entry in the .rela.plt section. */
2963
2964 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2965 BFD_ASSERT (s != NULL);
eea6121a 2966 s->size += sizeof (Elf32_External_Rela);
915e5146 2967
b34976b6 2968 return TRUE;
915e5146
HPN		 2969 }
2970
2971 /* Reinitialize the plt offset now that it is not used as a reference
2972 count any more. */
2973 h->plt.offset = (bfd_vma) -1;
2974
2975 /* If this is a weak symbol, and there is a real definition, the
2976 processor independent code will have arranged for us to see the
2977 real definition first, and we can just use the same value. */
f6e332e6 2978 if (h->u.weakdef != NULL)
915e5146 2979 {
f6e332e6
AM		 2980 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2981 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2982 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2983 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 2984 return TRUE;
915e5146
HPN		 2985 }
2986
2987 /* This is a reference to a symbol defined by a dynamic object which
2988 is not a function. */
2989
2990 /* If we are creating a shared library, we must presume that the
2991 only references to the symbol are via the global offset table.
2992 For such cases we need not do anything here; the relocations will
2993 be handled correctly by relocate_section. */
2994 if (info->shared)
b34976b6 2995 return TRUE;
915e5146
HPN		 2996
2997 /* If there are no references to this symbol that do not use the
2998 GOT, we don't need to generate a copy reloc. */
f5385ebf 2999 if (!h->non_got_ref)
b34976b6 3000 return TRUE;
915e5146 3001
909272ee
AM		 3002 if (h->size == 0)
3003 {
3004 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3005 h->root.root.string);
3006 return TRUE;
3007 }
3008
915e5146
HPN		 3009 /* We must allocate the symbol in our .dynbss section, which will
3010 become part of the .bss section of the executable. There will be
3011 an entry for this symbol in the .dynsym section. The dynamic
3012 object will contain position independent code, so all references
3013 from the dynamic object to this symbol will go through the global
3014 offset table. The dynamic linker will use the .dynsym entry to
3015 determine the address it must put in the global offset table, so
3016 both the dynamic object and the regular object will refer to the
3017 same memory location for the variable. */
3018
3019 s = bfd_get_section_by_name (dynobj, ".dynbss");
3020 BFD_ASSERT (s != NULL);
3021
3022 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3023 copy the initial value out of the dynamic object and into the
3024 runtime process image. We need to remember the offset into the
3025 .rela.bss section we are going to use. */
3026 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3027 {
3028 asection *srel;
3029
3030 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3031 BFD_ASSERT (srel != NULL);
eea6121a 3032 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3033 h->needs_copy = 1;
915e5146
HPN		 3034 }
3035
027297b7 3036 return _bfd_elf_adjust_dynamic_copy (h, s);
915e5146
HPN		 3037}
3038
237bc7f0
HPN		 3039/* Adjust our "subclass" elements for an indirect symbol. */
3040
3041static void
3042elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3043 struct elf_link_hash_entry *dir,
3044 struct elf_link_hash_entry *ind)
3045{
3046 struct elf_cris_link_hash_entry *edir, *eind;
3047
3048 edir = (struct elf_cris_link_hash_entry *) dir;
3049 eind = (struct elf_cris_link_hash_entry *) ind;
3050
867ea5fd
HPN		 3051 /* Only indirect symbols are replaced; we're not interested in
3052 updating any of EIND's fields for other symbols. */
3053 if (eind->root.root.type != bfd_link_hash_indirect)
3054 return;
3055
237bc7f0
HPN		 3056 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3057 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3058
3059#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3060#define XMOVE(F) XMOVOPZ (F, +=, 0)
3061 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3062 XMOVE (gotplt_refcount);
3063 XMOVE (gotplt_offset);
3064 XMOVE (reg_got_refcount);
3065 XMOVE (tprel_refcount);
3066 XMOVE (dtp_refcount);
3067#undef XMOVE
3068#undef XMOVOPZ
3069
3070 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3071}
3072
915e5146 3073/* Look through the relocs for a section during the first phase. */
a7c10850 3074
b34976b6 3075static bfd_boolean
06c15ad7
HPN		 3076cris_elf_check_relocs (abfd, info, sec, relocs)
3077 bfd *abfd;
3078 struct bfd_link_info *info;
3079 asection *sec;
3080 const Elf_Internal_Rela *relocs;
3081{
915e5146 3082 bfd *dynobj;
06c15ad7 3083 Elf_Internal_Shdr *symtab_hdr;
5582a088 3084 struct elf_link_hash_entry **sym_hashes;
915e5146 3085 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN		 3086 const Elf_Internal_Rela *rel;
3087 const Elf_Internal_Rela *rel_end;
915e5146
HPN		 3088 asection *sgot;
3089 asection *srelgot;
3090 asection *sreloc;
a7c10850 3091
1049f94e 3092 if (info->relocatable)
b34976b6 3093 return TRUE;
a7c10850 3094
915e5146 3095 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN		 3096 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3097 sym_hashes = elf_sym_hashes (abfd);
915e5146
HPN		 3098 local_got_refcounts = elf_local_got_refcounts (abfd);
3099
3100 sgot = NULL;
3101 srelgot = NULL;
3102 sreloc = NULL;
3103
06c15ad7
HPN		 3104 rel_end = relocs + sec->reloc_count;
3105 for (rel = relocs; rel < rel_end; rel++)
3106 {
3107 struct elf_link_hash_entry *h;
3108 unsigned long r_symndx;
915e5146 3109 enum elf_cris_reloc_type r_type;
100382c7
HPN		 3110 bfd_signed_vma got_element_size = 4;
3111 unsigned long r_symndx_lgot = INT_MAX;
a7c10850 3112
06c15ad7
HPN		 3113 r_symndx = ELF32_R_SYM (rel->r_info);
3114 if (r_symndx < symtab_hdr->sh_info)
100382c7
HPN		 3115 {
3116 h = NULL;
3117 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3118 }
06c15ad7 3119 else
973a3492
L		 3120 {
3121 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3122 while (h->root.type == bfd_link_hash_indirect
3123 || h->root.type == bfd_link_hash_warning)
3124 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3125 }
a7c10850 3126
915e5146
HPN		 3127 r_type = ELF32_R_TYPE (rel->r_info);
3128
3129 /* Some relocs require linker-created sections; we need to hang them
3130 on the first input bfd we found that contained dynamic relocs. */
3131 switch (r_type)
3132 {
100382c7
HPN		 3133 case R_CRIS_16_DTPREL:
3134 case R_CRIS_32_DTPREL:
3135 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3136 entry at index 3. */
3137 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3138 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3139 elf_cris_hash_table (info)->dtpmod_refcount++;
3140 /* Fall through. */
3141
75f500d7 3142 case R_CRIS_32_IE:
100382c7
HPN		 3143 case R_CRIS_32_GD:
3144 case R_CRIS_16_GOT_GD:
3145 case R_CRIS_32_GOT_GD:
3146 case R_CRIS_32_GOT_TPREL:
3147 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3148 case R_CRIS_16_GOT:
3149 case R_CRIS_32_GOT:
3150 case R_CRIS_32_GOTREL:
3151 case R_CRIS_32_PLT_GOTREL:
3152 case R_CRIS_32_PLT_PCREL:
3153 case R_CRIS_16_GOTPLT:
3154 case R_CRIS_32_GOTPLT:
3155 if (dynobj == NULL)
3156 {
3157 elf_hash_table (info)->dynobj = dynobj = abfd;
3158
bac23f82
HPN		 3159 /* We could handle this if we can get a handle on the
3160 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3161 that, we must insist on dynobj being a specific mach. */
3162 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3163 {
3164 (*_bfd_error_handler)
3165 (_("%B, section %A:\n v10/v32 compatible object %s"
3166 " must not contain a PIC relocation"),
3167 abfd, sec);
3168 return FALSE;
3169 }
3170
915e5146
HPN		 3171 /* Create the .got section, so we can assume it's always
3172 present whenever there's a dynobj. */
3173 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 3174 return FALSE;
915e5146 3175 }
100382c7
HPN		 3176
3177 if (sgot == NULL)
3178 sgot = bfd_get_section_by_name (dynobj, ".got");
3179
3180 if (local_got_refcounts == NULL)
3181 {
3182 bfd_size_type amt;
3183
3184 /* We use index local_got_refcounts[-1] to count all
3185 GOT-relative relocations that do not have explicit
3186 GOT entries. */
3187 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3188 amt *= sizeof (bfd_signed_vma);
3189 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3190 if (local_got_refcounts == NULL)
3191 return FALSE;
3192
3193 local_got_refcounts++;
3194 elf_local_got_refcounts (abfd) = local_got_refcounts;
3195 }
915e5146
HPN		 3196 break;
3197
3198 default:
3199 break;
3200 }
3201
3202 /* Some relocs require a global offset table (but perhaps not a
3203 specific GOT entry). */
4d96d128 3204 switch (r_type)
915e5146 3205 {
100382c7
HPN		 3206 case R_CRIS_16_DTPREL:
3207 case R_CRIS_32_DTPREL:
3208 /* Not requesting .got.rela for an executable: the contents
3209 of the first entry is constant there. For a shared
3210 library, we need .got.rela for the R_CRIS_DTPMOD
3211 relocation at index 3. */
3212 if (!info->shared)
3213 break;
3214 /* Fall through. */
3215
75f500d7 3216 case R_CRIS_32_IE:
100382c7
HPN		 3217 case R_CRIS_32_GD:
3218 case R_CRIS_16_GOT_GD:
3219 case R_CRIS_32_GOT_GD:
3220 case R_CRIS_32_GOT_TPREL:
3221 case R_CRIS_16_GOT_TPREL:
3222 /* Fall through. */
3223
44aa49bb
HPN		 3224 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3225 entry only for local symbols. Unfortunately, we don't know
3226 until later on if there's a version script that forces the
3227 symbol local. We must have the .rela.got section in place
3228 before we know if the symbol looks global now, so we need
3229 to treat the reloc just like for R_CRIS_16_GOT and
3230 R_CRIS_32_GOT. */
3231 case R_CRIS_16_GOTPLT:
3232 case R_CRIS_32_GOTPLT:
915e5146
HPN		 3233 case R_CRIS_16_GOT:
3234 case R_CRIS_32_GOT:
44aa49bb
HPN		 3235 if (srelgot == NULL
3236 && (h != NULL || info->shared))
3237 {
3238 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3239 if (srelgot == NULL)
3240 {
3496cb2a
L		 3241 srelgot = bfd_make_section_with_flags (dynobj,
3242 ".rela.got",
3243 (SEC_ALLOC
3244 | SEC_LOAD
3245 | SEC_HAS_CONTENTS
3246 | SEC_IN_MEMORY
3247 | SEC_LINKER_CREATED
3248 | SEC_READONLY));
44aa49bb 3249 if (srelgot == NULL
44aa49bb 3250 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 3251 return FALSE;
44aa49bb
HPN		 3252 }
3253 }
100382c7 3254 break;
44aa49bb 3255
100382c7
HPN		 3256 default:
3257 break;
3258 }
915e5146 3259
100382c7
HPN		 3260 /* Warn and error for invalid input. */
3261 switch (r_type)
3262 {
75f500d7 3263 case R_CRIS_32_IE:
100382c7
HPN		 3264 case R_CRIS_32_TPREL:
3265 case R_CRIS_16_TPREL:
3266 case R_CRIS_32_GD:
3267 if (info->shared)
915e5146 3268 {
100382c7
HPN		 3269 (*_bfd_error_handler)
3270 (_("%B, section %A:\n relocation %s not valid"
3271 " in a shared object;"
3272 " typically an option mixup, recompile with -fPIC"),
3273 abfd,
3274 sec,
3275 cris_elf_howto_table[r_type].name);
3276 /* Don't return FALSE here; we want messages for all of
3277 these and the error behavior is ungraceful
3278 anyway. */
3279 }
3280 default:
3281 break;
3282 }
915e5146 3283
100382c7
HPN		 3284 switch (r_type)
3285 {
3286 case R_CRIS_32_GD:
3287 case R_CRIS_16_GOT_GD:
3288 case R_CRIS_32_GOT_GD:
3289 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3290 got_element_size = 8;
3291 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3292 break;
915e5146 3293
100382c7
HPN		 3294 case R_CRIS_16_DTPREL:
3295 case R_CRIS_32_DTPREL:
3296 /* These two just request for the constant-index
3297 module-local tls_index-sized GOT entry, which we add
3298 elsewhere. */
915e5146
HPN		 3299 break;
3300
75f500d7 3301 case R_CRIS_32_IE:
100382c7
HPN		 3302 case R_CRIS_32_GOT_TPREL:
3303 case R_CRIS_16_GOT_TPREL:
3304 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3305
75f500d7 3306 /* Those relocs also require that a DSO is of type
100382c7
HPN		 3307 Initial Exec. Like other targets, we don't reset this
3308 flag even if the relocs are GC:ed away. */
3309 if (info->shared)
3310 info->flags |= DF_STATIC_TLS;
3311 break;
3312
3313 /* Let's list the other assembler-generated TLS-relocs too,
3314 just to show that they're not forgotten. */
3315 case R_CRIS_16_TPREL:
3316 case R_CRIS_32_TPREL:
915e5146
HPN		 3317 default:
3318 break;
3319 }
3320
4d96d128 3321 switch (r_type)
06c15ad7 3322 {
915e5146
HPN		 3323 case R_CRIS_16_GOTPLT:
3324 case R_CRIS_32_GOTPLT:
3325 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3326 entry) is eliminated. We can only do this for a non-local
3327 symbol. */
3328 if (h != NULL)
3329 {
100382c7 3330 elf_cris_hash_entry (h)->gotplt_refcount++;
915e5146
HPN		 3331 goto handle_gotplt_reloc;
3332 }
3333 /* If h is NULL then this is a local symbol, and we must make a
3334 GOT entry for it, so handle it like a GOT reloc. */
3335 /* Fall through. */
3336
75f500d7 3337 case R_CRIS_32_IE:
100382c7
HPN		 3338 case R_CRIS_32_GD:
3339 case R_CRIS_16_GOT_GD:
3340 case R_CRIS_32_GOT_GD:
3341 case R_CRIS_32_GOT_TPREL:
3342 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3343 case R_CRIS_16_GOT:
3344 case R_CRIS_32_GOT:
3345 /* This symbol requires a global offset table entry. */
915e5146
HPN		 3346 if (h != NULL)
3347 {
51b64d56 3348 if (h->got.refcount == 0)
915e5146 3349 {
915e5146
HPN		 3350 /* Make sure this symbol is output as a dynamic symbol. */
3351 if (h->dynindx == -1)
3352 {
c152c796 3353 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3354 return FALSE;
915e5146 3355 }
915e5146 3356 }
100382c7
HPN		 3357
3358 /* Update the sum of reloc counts for this symbol. */
51b64d56 3359 h->got.refcount++;
100382c7
HPN		 3360
3361 switch (r_type)
3362 {
3363 case R_CRIS_16_GOT:
3364 case R_CRIS_32_GOT:
3365 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3366 {
3367 /* Allocate space in the .got section. */
3368 sgot->size += got_element_size;
3369 /* Allocate relocation space. */
3370 srelgot->size += sizeof (Elf32_External_Rela);
3371 }
3372 elf_cris_hash_entry (h)->reg_got_refcount++;
3373 break;
3374
3375 case R_CRIS_32_GD:
3376 case R_CRIS_16_GOT_GD:
3377 case R_CRIS_32_GOT_GD:
3378 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3379 {
3380 /* Allocate space in the .got section. */
3381 sgot->size += got_element_size;
3382 /* Allocate relocation space. */
3383 srelgot->size += sizeof (Elf32_External_Rela);
3384 }
3385 elf_cris_hash_entry (h)->dtp_refcount++;
3386 break;
3387
75f500d7 3388 case R_CRIS_32_IE:
100382c7
HPN		 3389 case R_CRIS_32_GOT_TPREL:
3390 case R_CRIS_16_GOT_TPREL:
3391 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3392 {
3393 /* Allocate space in the .got section. */
3394 sgot->size += got_element_size;
3395 /* Allocate relocation space. */
3396 srelgot->size += sizeof (Elf32_External_Rela);
3397 }
3398 elf_cris_hash_entry (h)->tprel_refcount++;
3399 break;
3400
3401 default:
3402 BFD_FAIL ();
3403 break;
3404 }
915e5146
HPN		 3405 }
3406 else
3407 {
3408 /* This is a global offset table entry for a local symbol. */
100382c7 3409 if (local_got_refcounts[r_symndx_lgot] == 0)
915e5146 3410 {
100382c7 3411 sgot->size += got_element_size;
915e5146
HPN		 3412 if (info->shared)
3413 {
100382c7
HPN		 3414 /* If we are generating a shared object, we need
3415 to output a R_CRIS_RELATIVE reloc so that the
3416 dynamic linker can adjust this GOT entry.
3417 Similarly for non-regular got entries. */
eea6121a 3418 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 3419 }
3420 }
100382c7
HPN		 3421 /* Update the reloc-specific count. */
3422 local_got_refcounts[r_symndx_lgot]++;
3423
3424 /* This one is the sum of all the others. */
51b64d56 3425 local_got_refcounts[r_symndx]++;
915e5146
HPN		 3426 }
3427 break;
3428
100382c7
HPN		 3429 case R_CRIS_16_DTPREL:
3430 case R_CRIS_32_DTPREL:
915e5146
HPN		 3431 case R_CRIS_32_GOTREL:
3432 /* This reference requires a global offset table.
3433 FIXME: The actual refcount isn't used currently; the .got
3434 section can't be removed if there were any references in the
3435 input. */
3436 local_got_refcounts[-1]++;
3437 break;
3438
3439 handle_gotplt_reloc:
3440
3441 case R_CRIS_32_PLT_GOTREL:
3442 /* This reference requires a global offset table. */
3443 local_got_refcounts[-1]++;
3444 /* Fall through. */
3445
3446 case R_CRIS_32_PLT_PCREL:
3447 /* This symbol requires a procedure linkage table entry. We
3448 actually build the entry in adjust_dynamic_symbol,
3449 because this might be a case of linking PIC code which is
3450 never referenced by a dynamic object, in which case we
3451 don't need to generate a procedure linkage table entry
3452 after all. */
3453
ada1953e
HPN		 3454 /* Beware: if we'd check for visibility of the symbol here
3455 (and not marking the need for a PLT when non-visible), we'd
3456 get into trouble with keeping handling consistent with
3457 regards to relocs found before definition and GOTPLT
3458 handling. Eliminable PLT entries will be dealt with later
3459 anyway. */
3460 if (h == NULL)
915e5146
HPN		 3461 continue;
3462
f5385ebf 3463 h->needs_plt = 1;
51b64d56 3464 h->plt.refcount++;
915e5146
HPN		 3465 break;
3466
3467 case R_CRIS_8:
3468 case R_CRIS_16:
3469 case R_CRIS_32:
3470 /* Let's help debug shared library creation. Any of these
0d08de41
HPN		 3471 relocs *can* be used in shared libs, but pages containing
3472 them cannot be shared, so they're not appropriate for
3473 common use. Don't warn for sections we don't care about,
3474 such as debug sections or non-constant sections. We
3475 can't help tables of (global) function pointers, for
3476 example, though they must be emitted in a (writable) data
3477 section to avoid having impure text sections. */
915e5146
HPN		 3478 if (info->shared
3479 && (sec->flags & SEC_ALLOC) != 0
3480 && (sec->flags & SEC_READONLY) != 0)
3481 {
3482 /* FIXME: How do we make this optionally a warning only? */
8f615d07 3483 (*_bfd_error_handler)
bac23f82
HPN		 3484 (_("%B, section %A:\n relocation %s should not"
3485 " be used in a shared object; recompile with -fPIC"),
d003868e
AM		 3486 abfd,
3487 sec,
8f615d07 3488 cris_elf_howto_table[r_type].name);
915e5146 3489 }
0d08de41
HPN		 3490 if (h != NULL)
3491 {
3492 h->non_got_ref = 1;
100382c7 3493
0d08de41
HPN		 3494 /* Make sure a plt entry is created for this symbol if it
3495 turns out to be a function defined by a dynamic object. */
3496 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3497 h->plt.refcount++;
3498 }
3499
3500 /* If we are creating a shared library and this is not a local
3501 symbol, we need to copy the reloc into the shared library.
3502 However when linking with -Bsymbolic and this is a global
3503 symbol which is defined in an object we are including in the
3504 link (i.e., DEF_REGULAR is set), then we can resolve the
3505 reloc directly. At this point we have not seen all the input
3506 files, so it is possible that DEF_REGULAR is not set now but
3507 will be set later (it is never cleared). In case of a weak
3508 definition, DEF_REGULAR may be cleared later by a strong
3509 definition in a shared library. We account for that
3510 possibility below by storing information in the relocs_copied
3511 field of the hash table entry. A similar situation occurs
3512 when creating shared libraries and symbol visibility changes
3513 render the symbol local. */
3514
3515 /* No need to do anything if we're not creating a shared object. */
3516 if (! info->shared)
3517 break;
3518
3519 /* We don't need to handle relocs into sections not going into
3520 the "real" output. */
3521 if ((sec->flags & SEC_ALLOC) == 0)
3522 break;
3523
3524 /* We may need to create a reloc section in the dynobj and made room
3525 for this reloc. */
3526 if (sreloc == NULL)
3527 {
3528 sreloc = _bfd_elf_make_dynamic_reloc_section
3529 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3530
3531 if (sreloc == NULL)
3532 return FALSE;
3533 }
3534
3535 if (sec->flags & SEC_READONLY)
3536 info->flags |= DF_TEXTREL;
3537
3538 sreloc->size += sizeof (Elf32_External_Rela);
3539 break;
915e5146
HPN		 3540
3541 case R_CRIS_8_PCREL:
3542 case R_CRIS_16_PCREL:
3543 case R_CRIS_32_PCREL:
3544 if (h != NULL)
3545 {
f5385ebf 3546 h->non_got_ref = 1;
915e5146
HPN		 3547
3548 /* Make sure a plt entry is created for this symbol if it
3549 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN		 3550 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3551 h->plt.refcount++;
915e5146
HPN		 3552 }
3553
3554 /* If we are creating a shared library and this is not a local
3555 symbol, we need to copy the reloc into the shared library.
3556 However when linking with -Bsymbolic and this is a global
3557 symbol which is defined in an object we are including in the
3558 link (i.e., DEF_REGULAR is set), then we can resolve the
3559 reloc directly. At this point we have not seen all the input
3560 files, so it is possible that DEF_REGULAR is not set now but
3561 will be set later (it is never cleared). In case of a weak
3562 definition, DEF_REGULAR may be cleared later by a strong
3563 definition in a shared library. We account for that
3564 possibility below by storing information in the relocs_copied
3565 field of the hash table entry. A similar situation occurs
3566 when creating shared libraries and symbol visibility changes
3567 render the symbol local. */
3568
3569 /* No need to do anything if we're not creating a shared object. */
3570 if (! info->shared)
3571 break;
3572
3573 /* We don't need to handle relocs into sections not going into
3574 the "real" output. */
3575 if ((sec->flags & SEC_ALLOC) == 0)
3576 break;
3577
0d08de41
HPN		 3578 /* If the symbol is local, then we know already we can
3579 eliminate the reloc. */
3580 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3581 break;
bac23f82 3582
0d08de41
HPN		 3583 /* If this is with -Bsymbolic and the symbol isn't weak, and
3584 is defined by an ordinary object (the ones we include in
3585 this shared library) then we can also eliminate the
3586 reloc. See comment above for more eliminable cases which
3587 we can't identify at this time. */
3588 if (info->symbolic
3589 && h->root.type != bfd_link_hash_defweak
3590 && h->def_regular)
3591 break;
915e5146 3592
83bac4b0
NC		 3593 /* We may need to create a reloc section in the dynobj and made room
3594 for this reloc. */
915e5146
HPN		 3595 if (sreloc == NULL)
3596 {
83bac4b0
NC		 3597 sreloc = _bfd_elf_make_dynamic_reloc_section
3598 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
915e5146 3599
83bac4b0 3600 if (sreloc == NULL)
b34976b6 3601 return FALSE;
915e5146
HPN		 3602 }
3603
eea6121a 3604 sreloc->size += sizeof (Elf32_External_Rela);
915e5146 3605
0d08de41
HPN		 3606 /* We count the number of PC relative relocations we have
3607 entered for this symbol, so that we can discard them
3608 again if the symbol is later defined by a regular object.
3609 We know that h is really a pointer to an
915e5146 3610 elf_cris_link_hash_entry. */
0d08de41
HPN		 3611 {
3612 struct elf_cris_link_hash_entry *eh;
3613 struct elf_cris_pcrel_relocs_copied *p;
915e5146 3614
0d08de41 3615 eh = elf_cris_hash_entry (h);
915e5146 3616
0d08de41
HPN		 3617 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3618 if (p->section == sreloc)
3619 break;
915e5146 3620
0d08de41
HPN		 3621 if (p == NULL)
3622 {
3623 p = ((struct elf_cris_pcrel_relocs_copied *)
3624 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3625 if (p == NULL)
3626 return FALSE;
3627 p->next = eh->pcrel_relocs_copied;
3628 eh->pcrel_relocs_copied = p;
3629 p->section = sreloc;
3630 p->count = 0;
3631 p->r_type = r_type;
3632 }
915e5146 3633
0d08de41
HPN		 3634 ++p->count;
3635 }
915e5146
HPN		 3636 break;
3637
06c15ad7
HPN		 3638 /* This relocation describes the C++ object vtable hierarchy.
3639 Reconstruct it for later use during GC. */
3640 case R_CRIS_GNU_VTINHERIT:
c152c796 3641 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3642 return FALSE;
06c15ad7 3643 break;
a7c10850 3644
06c15ad7
HPN		 3645 /* This relocation describes which C++ vtable entries are actually
3646 used. Record for later use during GC. */
3647 case R_CRIS_GNU_VTENTRY:
d17e0c6e
JB		 3648 BFD_ASSERT (h != NULL);
3649 if (h != NULL
3650 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3651 return FALSE;
06c15ad7 3652 break;
4d96d128 3653
100382c7
HPN		 3654 case R_CRIS_16_TPREL:
3655 case R_CRIS_32_TPREL:
3656 /* Already warned above, when necessary. */
3657 break;
3658
4d96d128
HPN		 3659 default:
3660 /* Other relocs do not appear here. */
3661 bfd_set_error (bfd_error_bad_value);
b34976b6 3662 return FALSE;
06c15ad7
HPN		 3663 }
3664 }
a7c10850 3665
b34976b6 3666 return TRUE;
06c15ad7 3667}
4da81684 3668
915e5146
HPN		 3669/* Set the sizes of the dynamic sections. */
3670
b34976b6 3671static bfd_boolean
915e5146 3672elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 3673 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN		 3674 struct bfd_link_info *info;
3675{
3676 bfd *dynobj;
3677 asection *s;
b34976b6
AM		 3678 bfd_boolean plt;
3679 bfd_boolean relocs;
915e5146
HPN		 3680
3681 dynobj = elf_hash_table (info)->dynobj;
3682 BFD_ASSERT (dynobj != NULL);
3683
3684 if (elf_hash_table (info)->dynamic_sections_created)
3685 {
3686 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3687 if (info->executable)
915e5146
HPN		 3688 {
3689 s = bfd_get_section_by_name (dynobj, ".interp");
3690 BFD_ASSERT (s != NULL);
eea6121a 3691 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN		 3692 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3693 }
3694 }
3695 else
3696 {
3697 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3698 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3699 elf_cris_adjust_gotplt_to_got,
3700 (PTR) info);
3701
3702 /* We may have created entries in the .rela.got section.
3703 However, if we are not creating the dynamic sections, we will
3704 not actually use these entries. Reset the size of .rela.got,
3705 which will cause it to get stripped from the output file
3706 below. */
3707 s = bfd_get_section_by_name (dynobj, ".rela.got");
3708 if (s != NULL)
eea6121a 3709 s->size = 0;
915e5146
HPN		 3710 }
3711
3712 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3713 relative relocs against symbols defined in a regular object. We
3714 allocated space for them in the check_relocs routine, but we will not
3715 fill them in in the relocate_section routine. We also discard space
3716 for relocs that have become for local symbols due to symbol
4d96d128
HPN		 3717 visibility changes. For programs, we discard space for relocs for
3718 symbols not referenced by any dynamic object. */
915e5146
HPN		 3719 if (info->shared)
3720 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN		 3721 elf_cris_discard_excess_dso_dynamics,
3722 (PTR) info);
3723 else
3724 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3725 elf_cris_discard_excess_program_dynamics,
915e5146
HPN		 3726 (PTR) info);
3727
3728 /* The check_relocs and adjust_dynamic_symbol entry points have
3729 determined the sizes of the various dynamic sections. Allocate
3730 memory for them. */
b34976b6
AM		 3731 plt = FALSE;
3732 relocs = FALSE;
915e5146
HPN		 3733 for (s = dynobj->sections; s != NULL; s = s->next)
3734 {
3735 const char *name;
915e5146
HPN		 3736
3737 if ((s->flags & SEC_LINKER_CREATED) == 0)
3738 continue;
3739
3740 /* It's OK to base decisions on the section name, because none
3741 of the dynobj section names depend upon the input files. */
3742 name = bfd_get_section_name (dynobj, s);
3743
915e5146
HPN		 3744 if (strcmp (name, ".plt") == 0)
3745 {
c456f082
AM		 3746 /* Remember whether there is a PLT. */
3747 plt = s->size != 0;
915e5146 3748 }
100382c7
HPN		 3749 else if (strcmp (name, ".got.plt") == 0)
3750 {
3751 /* The .got.plt contains the .got header as well as the
3752 actual .got.plt contents. The .got header may contain a
3753 R_CRIS_DTPMOD entry at index 3. */
3754 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3755 ? 8 : 0;
3756 }
0112cd26 3757 else if (CONST_STRNEQ (name, ".rela"))
915e5146 3758 {
100382c7
HPN		 3759 if (strcmp (name, ".rela.got") == 0
3760 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3761 && info->shared)
3762 s->size += sizeof (Elf32_External_Rela);
3763
c456f082 3764 if (s->size != 0)
915e5146 3765 {
915e5146
HPN		 3766 /* Remember whether there are any reloc sections other
3767 than .rela.plt. */
3768 if (strcmp (name, ".rela.plt") != 0)
b34976b6 3769 relocs = TRUE;
915e5146 3770
915e5146
HPN		 3771 /* We use the reloc_count field as a counter if we need
3772 to copy relocs into the output file. */
3773 s->reloc_count = 0;
3774 }
3775 }
0112cd26 3776 else if (! CONST_STRNEQ (name, ".got")
c456f082 3777 && strcmp (name, ".dynbss") != 0)
915e5146
HPN		 3778 {
3779 /* It's not one of our sections, so don't allocate space. */
3780 continue;
3781 }
3782
c456f082 3783 if (s->size == 0)
915e5146 3784 {
c456f082
AM		 3785 /* If we don't need this section, strip it from the
3786 output file. This is mostly to handle .rela.bss and
3787 .rela.plt. We must create both sections in
3788 create_dynamic_sections, because they must be created
3789 before the linker maps input sections to output
3790 sections. The linker does that before
3791 adjust_dynamic_symbol is called, and it is that
3792 function which decides whether anything needs to go
3793 into these sections. */
8423293d 3794 s->flags |= SEC_EXCLUDE;
915e5146
HPN		 3795 continue;
3796 }
3797
c456f082
AM		 3798 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3799 continue;
3800
915e5146
HPN		 3801 /* Allocate memory for the section contents. We use bfd_zalloc here
3802 in case unused entries are not reclaimed before the section's
3803 contents are written out. This should not happen, but this way
3804 if it does, we will not write out garbage. For reloc sections,
3805 this will make entries have the type R_CRIS_NONE. */
eea6121a 3806 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3807 if (s->contents == NULL)
b34976b6 3808 return FALSE;
915e5146
HPN		 3809 }
3810
3811 if (elf_hash_table (info)->dynamic_sections_created)
3812 {
3813 /* Add some entries to the .dynamic section. We fill in the
3814 values later, in elf_cris_finish_dynamic_sections, but we
3815 must add the entries now so that we get the correct size for
3816 the .dynamic section. The DT_DEBUG entry is filled in by the
3817 dynamic linker and used by the debugger. */
dc810e39 3818#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3819 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3820
915e5146
HPN		 3821 if (!info->shared)
3822 {
dc810e39 3823 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3824 return FALSE;
915e5146
HPN		 3825 }
3826
3827 if (plt)
3828 {
dc810e39
AM		 3829 if (!add_dynamic_entry (DT_PLTGOT, 0)
3830 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3831 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3832 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3833 return FALSE;
915e5146
HPN		 3834 }
3835
3836 if (relocs)
3837 {
dc810e39
AM		 3838 if (!add_dynamic_entry (DT_RELA, 0)
3839 || !add_dynamic_entry (DT_RELASZ, 0)
3840 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3841 return FALSE;
915e5146
HPN		 3842 }
3843
99e4ae17 3844 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3845 {
dc810e39 3846 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3847 return FALSE;
915e5146
HPN		 3848 info->flags |= DF_TEXTREL;
3849 }
3850 }
dc810e39 3851#undef add_dynamic_entry
915e5146 3852
b34976b6 3853 return TRUE;
915e5146
HPN		 3854}
3855
3856/* This function is called via elf_cris_link_hash_traverse if we are
3857 creating a shared object. In the -Bsymbolic case, it discards the
3858 space allocated to copy PC relative relocs against symbols which
3859 are defined in regular objects. For the normal non-symbolic case,
3860 we also discard space for relocs that have become local due to
3861 symbol visibility changes. We allocated space for them in the
3862 check_relocs routine, but we won't fill them in in the
3863 relocate_section routine. */
3864
b34976b6 3865static bfd_boolean
4d96d128 3866elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN		 3867 struct elf_cris_link_hash_entry *h;
3868 PTR inf;
3869{
3870 struct elf_cris_pcrel_relocs_copied *s;
3871 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3872
e92d460e
AM		 3873 if (h->root.root.type == bfd_link_hash_warning)
3874 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3875
915e5146
HPN		 3876 /* If a symbol has been forced local or we have found a regular
3877 definition for the symbolic link case, then we won't be needing
3878 any relocs. */
f5385ebf
AM		 3879 if (h->root.def_regular
3880 && (h->root.forced_local
915e5146
HPN		 3881 || info->symbolic))
3882 {
3883 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3884 s->section->size -= s->count * sizeof (Elf32_External_Rela);
0d08de41
HPN		 3885
3886 return TRUE;
3887 }
3888
3889 /* If we have accounted for PC-relative relocs for read-only
3890 sections, now is the time to warn for them. We can't do it in
3891 cris_elf_check_relocs, because we don't know the status of all
3892 symbols at that time (and it's common to force symbols local
3893 late). */
3894
3895 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3896 {
3897 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3898
3899 /* FIXME: How do we make this optionally a warning only? */
3900 (*_bfd_error_handler)
3901 (_("%B, section `%A', to symbol `%s':\n"
3902 " relocation %s should not be used"
3903 " in a shared object; recompile with -fPIC"),
3904 s->section->owner,
3905 s->section,
3906 h->root.root.root.string,
3907 cris_elf_howto_table[s->r_type].name);
3908
3909 info->flags |= DF_TEXTREL;
4d96d128
HPN		 3910 }
3911
b34976b6 3912 return TRUE;
4d96d128
HPN		 3913}
3914
3915/* This function is called via elf_cris_link_hash_traverse if we are *not*
3916 creating a shared object. We discard space for relocs for symbols put
3917 in the .got, but which we found we do not have to resolve at run-time. */
3918
b34976b6 3919static bfd_boolean
4d96d128
HPN		 3920elf_cris_discard_excess_program_dynamics (h, inf)
3921 struct elf_cris_link_hash_entry *h;
3922 PTR inf;
3923{
3924 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3925
e92d460e
AM		 3926 if (h->root.root.type == bfd_link_hash_warning)
3927 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3928
4d96d128
HPN		 3929 /* If we're not creating a shared library and have a symbol which is
3930 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN		 3931 (or rather, not defined by a DSO) then lose the reloc for the .got
3932 (don't allocate room for it). Likewise for relocs for something
3933 for which we create a PLT. */
f5385ebf 3934 if (!h->root.def_dynamic
e4a2175c 3935 || h->root.plt.refcount > 0)
4d96d128 3936 {
100382c7 3937 if (h->reg_got_refcount > 0
4d96d128
HPN		 3938 /* The size of this section is only valid and in sync with the
3939 various reference counts if we do dynamic; don't decrement it
3940 otherwise. */
3941 && elf_hash_table (info)->dynamic_sections_created)
3942 {
3943 bfd *dynobj = elf_hash_table (info)->dynobj;
3944 asection *srelgot;
3945
3946 BFD_ASSERT (dynobj != NULL);
99c79b2e 3947
4d96d128
HPN		 3948 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3949
3950 BFD_ASSERT (srelgot != NULL);
3951
eea6121a 3952 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN		 3953 }
3954
3955 /* If the locally-defined symbol isn't used by a DSO, then we don't
3956 have to export it as a dynamic symbol. This was already done for
3957 functions; doing this for all symbols would presumably not
e5dfef09
HPN		 3958 introduce new problems. Of course we don't do this if we're
3959 exporting all dynamic symbols. */
0741c7be 3960 if (! info->export_dynamic
77cfaee6 3961 && h->root.dynindx != -1
f5385ebf
AM		 3962 && !h->root.def_dynamic
3963 && !h->root.ref_dynamic)
e5dfef09
HPN		 3964 {
3965 h->root.dynindx = -1;
3966 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3967 h->root.dynstr_index);
3968 }
915e5146
HPN		 3969 }
3970
b34976b6 3971 return TRUE;
915e5146
HPN		 3972}
3973
3974/* Reject a file depending on presence and expectation of prefixed
3975 underscores on symbols. */
4da81684 3976
b34976b6 3977static bfd_boolean
4da81684
HPN		 3978cris_elf_object_p (abfd)
3979 bfd *abfd;
3980{
bac23f82
HPN		 3981 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3982 return FALSE;
3983
4da81684
HPN		 3984 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3985 return (bfd_get_symbol_leading_char (abfd) == '_');
3986 else
3987 return (bfd_get_symbol_leading_char (abfd) == 0);
3988}
3989
bac23f82
HPN		 3990/* Mark presence or absence of leading underscore. Set machine type
3991 flags from mach type. */
4da81684
HPN		 3992
3993static void
3994cris_elf_final_write_processing (abfd, linker)
3995 bfd *abfd;
b34976b6 3996 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 3997{
bac23f82
HPN		 3998 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3999
4000 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 4001 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN		 4002 e_flags |= EF_CRIS_UNDERSCORE;
4003
4004 switch (bfd_get_mach (abfd))
4005 {
4006 case bfd_mach_cris_v0_v10:
4007 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4008 break;
4009
4010 case bfd_mach_cris_v10_v32:
4011 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4012 break;
4013
4014 case bfd_mach_cris_v32:
4015 e_flags |= EF_CRIS_VARIANT_V32;
4016 break;
4017
4018 default:
4019 _bfd_abort (__FILE__, __LINE__,
4020 _("Unexpected machine number"));
4021 }
4022
4023 elf_elfheader (abfd)->e_flags = e_flags;
4024}
4025
4026/* Set the mach type from e_flags value. */
4027
4028static bfd_boolean
4029cris_elf_set_mach_from_flags (abfd, flags)
4030 bfd *abfd;
4031 unsigned long flags;
4032{
4033 switch (flags & EF_CRIS_VARIANT_MASK)
4034 {
4035 case EF_CRIS_VARIANT_ANY_V0_V10:
4036 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4037 break;
4038
4039 case EF_CRIS_VARIANT_V32:
4040 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4041 break;
4042
4043 case EF_CRIS_VARIANT_COMMON_V10_V32:
4044 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4045 break;
4046
4047 default:
4048 /* Since we don't recognize them, we obviously can't support them
4049 with this code; we'd have to require that all future handling
4050 would be optional. */
4051 bfd_set_error (bfd_error_wrong_format);
4052 return FALSE;
4053 }
4054
4055 return TRUE;
4da81684
HPN		 4056}
4057
4058/* Display the flags field. */
4059
b34976b6 4060static bfd_boolean
4da81684
HPN		 4061cris_elf_print_private_bfd_data (abfd, ptr)
4062 bfd *abfd;
4063 PTR ptr;
4064{
4065 FILE *file = (FILE *) ptr;
4066
f12123c0 4067 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN		 4068
4069 _bfd_elf_print_private_bfd_data (abfd, ptr);
4070
4071 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4072
4073 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4074 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN		 4075 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4076 == EF_CRIS_VARIANT_COMMON_V10_V32)
4077 fprintf (file, _(" [v10 and v32]"));
4078 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4079 == EF_CRIS_VARIANT_V32)
4080 fprintf (file, _(" [v32]"));
4da81684
HPN		 4081
4082 fputc ('\n', file);
b34976b6 4083 return TRUE;
4da81684
HPN		 4084}
4085
4086/* Don't mix files with and without a leading underscore. */
4087
b34976b6 4088static bfd_boolean
4da81684
HPN		 4089cris_elf_merge_private_bfd_data (ibfd, obfd)
4090 bfd *ibfd;
4091 bfd *obfd;
4092{
bac23f82 4093 int imach, omach;
4da81684 4094
82e51918 4095 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4096 return FALSE;
4da81684
HPN		 4097
4098 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4099 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4100 return TRUE;
4da81684 4101
bac23f82
HPN		 4102 imach = bfd_get_mach (ibfd);
4103
4da81684
HPN		 4104 if (! elf_flags_init (obfd))
4105 {
4106 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 4107 elf_flags_init (obfd) = TRUE;
4da81684 4108
bac23f82
HPN		 4109 /* We ignore the linker-set mach, and instead set it according to
4110 the first input file. This would also happen if we could
4111 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4112 This allows us to keep the same linker config across
4113 cris(v0..v10) and crisv32. The drawback is that we can't force
4114 the output type, which might be a sane thing to do for a
4115 v10+v32 compatibility object. */
4116 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4117 return FALSE;
4da81684
HPN		 4118 }
4119
bac23f82
HPN		 4120 if (bfd_get_symbol_leading_char (ibfd)
4121 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN		 4122 {
4123 (*_bfd_error_handler)
bac23f82 4124 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM		 4125 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4126 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4127 ibfd);
4da81684 4128 bfd_set_error (bfd_error_bad_value);
b34976b6 4129 return FALSE;
4da81684
HPN		 4130 }
4131
bac23f82
HPN		 4132 omach = bfd_get_mach (obfd);
4133
4134 if (imach != omach)
4135 {
4136 /* We can get an incompatible combination only if either is
4137 bfd_mach_cris_v32, and the other one isn't compatible. */
4138 if ((imach == bfd_mach_cris_v32
4139 && omach != bfd_mach_cris_v10_v32)
4140 || (omach == bfd_mach_cris_v32
4141 && imach != bfd_mach_cris_v10_v32))
4142 {
4143 (*_bfd_error_handler)
4144 ((imach == bfd_mach_cris_v32)
4145 ? _("%B contains CRIS v32 code, incompatible"
4146 " with previous objects")
4147 : _("%B contains non-CRIS-v32 code, incompatible"
4148 " with previous objects"),
4149 ibfd);
4150 bfd_set_error (bfd_error_bad_value);
4151 return FALSE;
4152 }
4153
4154 /* We don't have to check the case where the input is compatible
4155 with v10 and v32, because the output is already known to be set
4156 to the other (compatible) mach. */
4157 if (omach == bfd_mach_cris_v10_v32
4158 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4159 return FALSE;
4160 }
4161
b34976b6 4162 return TRUE;
4da81684 4163}
99e4ae17 4164
bac23f82
HPN		 4165/* Do side-effects of e_flags copying to obfd. */
4166
4167static bfd_boolean
4168cris_elf_copy_private_bfd_data (ibfd, obfd)
4169 bfd *ibfd;
4170 bfd *obfd;
4171{
4172 /* Call the base function. */
4173 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4174 return FALSE;
4175
4176 /* If output is big-endian for some obscure reason, stop here. */
4177 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4178 return FALSE;
4179
4180 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4181 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4182 return TRUE;
4183
4184 /* Do what we really came here for. */
4185 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4186}
99e4ae17
AJ		 4187
4188static enum elf_reloc_type_class
f51e552e
AM		 4189elf_cris_reloc_type_class (rela)
4190 const Elf_Internal_Rela *rela;
99e4ae17 4191{
100382c7
HPN		 4192 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4193 switch (r_type)
99e4ae17
AJ		 4194 {
4195 case R_CRIS_RELATIVE:
4196 return reloc_class_relative;
4197 case R_CRIS_JUMP_SLOT:
4198 return reloc_class_plt;
4199 case R_CRIS_COPY:
4200 return reloc_class_copy;
4201 default:
4202 return reloc_class_normal;
4203 }
4204}
100382c7
HPN		 4205
4206/* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4207 two GOT entries from three types with two different sizes. We handle
4208 it as a single entry, so we can use the regular offset-calculation
4209 machinery. */
4210
4211static bfd_vma
4212elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4213 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4214 struct elf_link_hash_entry *hr,
4215 bfd *ibfd,
4216 unsigned long symndx)
4217{
4218 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
100382c7
HPN		 4219 bfd_vma eltsiz = 0;
4220
4221 /* We may have one regular GOT entry or up to two TLS GOT
4222 entries. */
4223 if (h == NULL)
4224 {
b2e254f9 4225 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
100382c7
HPN		 4226 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4227
4228 BFD_ASSERT (local_got_refcounts != NULL);
4229
4230 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4231 {
4232 /* We can't have a variable referred to both as a regular
4233 variable and through TLS relocs. */
4234 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4235 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4236 return 4;
4237 }
4238
4239 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4240 eltsiz += 8;
4241
4242 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4243 eltsiz += 4;
4244 }
4245 else
4246 {
4247 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4248 if (hh->reg_got_refcount > 0)
4249 {
4250 /* The actual error-on-input is emitted elsewhere. */
4251 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4252 return 4;
4253 }
4254
4255 if (hh->dtp_refcount > 0)
4256 eltsiz += 8;
4257
4258 if (hh->tprel_refcount > 0)
4259 eltsiz += 4;
4260 }
4261
b2e254f9
HPN		 4262 /* We're only called when h->got.refcount is non-zero, so we must
4263 have a non-zero size. */
4264 BFD_ASSERT (eltsiz != 0);
100382c7
HPN		 4265 return eltsiz;
4266}
06c15ad7
HPN		 4267\f
4268#define ELF_ARCH bfd_arch_cris
4269#define ELF_MACHINE_CODE EM_CRIS
4270#define ELF_MAXPAGESIZE 0x2000
4271
4272#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4273#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 4274#define elf_symbol_leading_char 0
06c15ad7
HPN		 4275
4276#define elf_info_to_howto_rel NULL
4277#define elf_info_to_howto cris_info_to_howto_rela
4278#define elf_backend_relocate_section cris_elf_relocate_section
4279#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4280#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4281#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN		 4282#define elf_backend_grok_prstatus cris_elf_grok_prstatus
4283#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN		 4284
4285#define elf_backend_can_gc_sections 1
51b64d56 4286#define elf_backend_can_refcount 1
06c15ad7 4287
4da81684
HPN		 4288#define elf_backend_object_p cris_elf_object_p
4289#define elf_backend_final_write_processing \
4290 cris_elf_final_write_processing
4291#define bfd_elf32_bfd_print_private_bfd_data \
4292 cris_elf_print_private_bfd_data
4293#define bfd_elf32_bfd_merge_private_bfd_data \
4294 cris_elf_merge_private_bfd_data
bac23f82
HPN		 4295#define bfd_elf32_bfd_copy_private_bfd_data \
4296 cris_elf_copy_private_bfd_data
4da81684 4297
06c15ad7 4298#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
157090f7 4299#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
06c15ad7 4300
915e5146
HPN		 4301#define bfd_elf32_bfd_link_hash_table_create \
4302 elf_cris_link_hash_table_create
4303#define elf_backend_adjust_dynamic_symbol \
4304 elf_cris_adjust_dynamic_symbol
237bc7f0
HPN		 4305#define elf_backend_copy_indirect_symbol \
4306 elf_cris_copy_indirect_symbol
915e5146
HPN		 4307#define elf_backend_size_dynamic_sections \
4308 elf_cris_size_dynamic_sections
74541ad4 4309#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN		 4310#define elf_backend_finish_dynamic_symbol \
4311 elf_cris_finish_dynamic_symbol
4312#define elf_backend_finish_dynamic_sections \
4313 elf_cris_finish_dynamic_sections
4314#define elf_backend_create_dynamic_sections \
4315 _bfd_elf_create_dynamic_sections
4316#define bfd_elf32_bfd_final_link \
c152c796 4317 bfd_elf_gc_common_final_link
915e5146 4318#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 4319#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN		 4320
4321#define elf_backend_want_got_plt 1
4322#define elf_backend_plt_readonly 1
4323#define elf_backend_want_plt_sym 0
4324#define elf_backend_got_header_size 12
100382c7 4325#define elf_backend_got_elt_size elf_cris_got_elt_size
915e5146 4326
06c15ad7
HPN		 4327/* Later, we my want to optimize RELA entries into REL entries for dynamic
4328 linking and libraries (if it's a win of any significance). Until then,
4329 take the easy route. */
4330#define elf_backend_may_use_rel_p 0
4331#define elf_backend_may_use_rela_p 1
f0fe0e16 4332#define elf_backend_rela_normal 1
06c15ad7
HPN		 4333
4334#include "elf32-target.h"
4da81684 4335
4da81684
HPN		 4336#undef TARGET_LITTLE_SYM
4337#undef TARGET_LITTLE_NAME
4338#undef elf_symbol_leading_char
4339
4340#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4341#define TARGET_LITTLE_NAME "elf32-us-cris"
4342#define elf_symbol_leading_char '_'
16cecee5
L		 4343#undef elf32_bed
4344#define elf32_bed elf32_us_cris_bed
4da81684
HPN		 4345
4346#include "elf32-target.h"
GDB Binutils - Deliverables
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