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* elf32-cris.c (elf_cris_copy_indirect_symbol): For other symbol
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
CommitLineData
06c15ad7 1/* CRIS-specific support for 32-bit ELF.
9dbe8890 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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
1bc86aea 1724 (1, -prog_tls_size+known_tpoffset) into the GOT. */
100382c7 1725 relocation -= elf_hash_table (info)->tls_sec->vma;
1bc86aea 1726 relocation -= elf_hash_table (info)->tls_sec->size;
100382c7
HPN		 1727
1728 if (h != NULL)
1729 {
1730 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1731 ? h->got.offset + 4 : h->got.offset;
1732 }
1733 else
1734 {
1735 off = local_got_offsets[r_symndx];
1736 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1737 off += 4;
1738 }
1739
1740 /* We use bit 1 of the offset as a flag for GOT entry with
1741 the R_CRIS_DTP reloc, setting it when we've emitted the
1742 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1743 relocs. */
1744 if ((off & 2) == 0)
1745 {
1746 off &= ~3;
1747
1748 if (h != NULL)
1749 h->got.offset |= 2;
1750 else
1751 local_got_offsets[r_symndx] |= 2;
1752
1753 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1754 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1755 }
1756 else
1757 off &= ~3;
1758
1759 relocation = sgot->output_offset + off
1760 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1761 }
1762 else
1763 {
1764 /* Not all parts of the GOT entry are known; emit a real
1765 relocation. */
1766 bfd_vma off;
1767
1768 if (h != NULL)
1769 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1770 ? h->got.offset + 4 : h->got.offset;
1771 else
1772 {
1773 off = local_got_offsets[r_symndx];
1774 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1775 off += 4;
1776 }
1777
1778 /* See above re bit 1 and bit 0 usage. */
1779 if ((off & 2) == 0)
1780 {
1781 Elf_Internal_Rela outrel;
1782 bfd_byte *loc;
1783
1784 off &= ~3;
1785
1786 if (h != NULL)
1787 h->got.offset |= 2;
1788 else
1789 local_got_offsets[r_symndx] |= 2;
1790
1791 /* Clear the target contents of the GOT (just as a
1792 gesture; it's already cleared on allocation): this
1793 relocation is not like the other dynrelocs. */
1794 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1795 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1796
1797 if (srelgot == NULL)
1798 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1799 BFD_ASSERT (srelgot != NULL);
1800
1801 if (h != NULL && h->dynindx != -1)
1802 {
1803 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1804 relocation = 0;
1805 }
1806 else
1807 {
1808 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1809
1810 /* NULL if we had an error. */
1811 relocation -= elf_hash_table (info)->tls_sec == NULL
1812 ? 0 : elf_hash_table (info)->tls_sec->vma;
1813 }
1814
1815 outrel.r_offset = (sgot->output_section->vma
1816 + sgot->output_offset
1817 + off);
1818 outrel.r_addend = relocation;
1819 loc = srelgot->contents;
1820 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1821
1822 /* NULL if we had an error. */
1823 if (srelgot->contents != NULL)
1824 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1825 }
1826 else
1827 off &= ~3;
1828
1829 relocation = sgot->output_offset + off
1830 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1831 }
1832
1833 /* The GOT-relative offset to the GOT entry is the
1834 relocation, or for R_CRIS_32_GD, the actual address of
1835 the GOT entry. */
1836 break;
1837
75f500d7
HPN		 1838 case R_CRIS_32_IE:
1839 if (info->shared)
1840 {
1841 bfd_set_error (bfd_error_invalid_operation);
1842
1843 /* We've already informed in cris_elf_check_relocs that
1844 this is an error. */
1845 return FALSE;
1846 }
1847 /* Fall through. */
1848
100382c7
HPN		 1849 case R_CRIS_32_GOT_TPREL:
1850 case R_CRIS_16_GOT_TPREL:
1851 if (rel->r_addend != 0)
1852 {
1853 /* We can't do anything for a relocation which is
1854 against a symbol *plus offset*. GOT holds
1855 relocations for symbols. Make this an error; the
1856 compiler isn't allowed to pass us these kinds of
1857 things. */
1858 (*_bfd_error_handler)
1859 (_("%B, section %A: relocation %s with non-zero addend %d"
1860 " against symbol `%s'"),
1861 input_bfd,
1862 input_section,
1863 cris_elf_howto_table[r_type].name,
1864 rel->r_addend,
1865 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1866 bfd_set_error (bfd_error_bad_value);
1867 return FALSE;
1868 }
1869
1870 if (!info->shared && (h == NULL || h->def_regular))
1871 {
1872 /* Known contents of the GOT. */
1873 bfd_vma off;
1874
1875 /* The symbol is defined in the program, so just write
1bc86aea 1876 the -prog_tls_size+known_tpoffset into the GOT. */
100382c7 1877 relocation -= elf_hash_table (info)->tls_sec->vma;
1bc86aea 1878 relocation -= elf_hash_table (info)->tls_sec->size;
100382c7
HPN		 1879
1880 if (h != NULL)
1881 off = h->got.offset;
1882 else
1883 off = local_got_offsets[r_symndx];
1884
1885 /* Bit 0 is used to mark whether we've emitted the required
1886 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1887 is used similarly for R_CRIS_DTP, see above. */
1888 if ((off & 1) == 0)
1889 {
1890 off &= ~3;
1891
1892 if (h != NULL)
1893 h->got.offset |= 1;
1894 else
1895 local_got_offsets[r_symndx] |= 1;
1896
1897 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1898 }
1899 else
1900 off &= ~3;
1901
75f500d7
HPN		 1902 relocation = sgot->output_offset + off
1903 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1904 }
1905 else
1906 {
1907 /* Emit a real relocation. */
1908 bfd_vma off;
1909
1910 if (h != NULL)
1911 off = h->got.offset;
1912 else
1913 off = local_got_offsets[r_symndx];
1914
1915 /* See above re usage of bit 0 and 1. */
1916 if ((off & 1) == 0)
1917 {
1918 Elf_Internal_Rela outrel;
1919 bfd_byte *loc;
1920
1921 off &= ~3;
1922
1923 if (h != NULL)
1924 h->got.offset |= 1;
1925 else
1926 local_got_offsets[r_symndx] |= 1;
1927
1928 if (srelgot == NULL)
1929 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1930 BFD_ASSERT (srelgot != NULL);
1931
1932 if (h != NULL && h->dynindx != -1)
1933 {
1934 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1935 relocation = 0;
1936 }
1937 else
1938 {
1939 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1940
1941 /* NULL if we had an error. */
1942 relocation -= elf_hash_table (info)->tls_sec == NULL
1943 ? 0 : elf_hash_table (info)->tls_sec->vma;
1944 }
1945
1946 /* Just "define" the initial contents in some
1947 semi-logical way. */
1948 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1949
1950 outrel.r_offset = (sgot->output_section->vma
1951 + sgot->output_offset
1952 + off);
1953 outrel.r_addend = relocation;
1954 loc = srelgot->contents;
1955 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1956 /* NULL if we had an error. */
1957 if (srelgot->contents != NULL)
1958 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1959 }
1960 else
1961 off &= ~3;
1962
75f500d7
HPN		 1963 relocation = sgot->output_offset + off
1964 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1965 }
1966
75f500d7
HPN		 1967 /* The GOT-relative offset to the GOT entry is the relocation,
1968 or for R_CRIS_32_GD, the actual address of the GOT entry. */
100382c7
HPN		 1969 break;
1970
1971 case R_CRIS_16_TPREL:
1972 case R_CRIS_32_TPREL:
1973 /* This relocation must only be performed against symbols
1974 defined in an ordinary (non-DSO) object. */
1975 if (info->shared)
1976 {
1977 bfd_set_error (bfd_error_invalid_operation);
1978
1979 /* We've already informed in cris_elf_check_relocs that
1980 this is an error. */
1981 return FALSE;
1982 }
1983
1984 if (h != NULL
1985 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1986 && !h->def_regular
1987 /* If it's undefined, then an error message has already
1988 been emitted. */
1989 && h->root.type != bfd_link_hash_undefined)
1990 {
1991 (*_bfd_error_handler)
1992 (_("%B, section %A: relocation %s is"
1993 " not allowed for symbol: `%s'"
1994 " which is defined outside the program,"
1995 " perhaps a declaration mixup?"),
1996 input_bfd,
1997 input_section,
1998 cris_elf_howto_table[r_type].name,
1999 symname);
2000 bfd_set_error (bfd_error_bad_value);
2001 return FALSE;
2002 }
2003
2004 /* NULL if we had an error. */
2005 relocation -= elf_hash_table (info)->tls_sec == NULL
1bc86aea
HPN		 2006 ? 0
2007 : (elf_hash_table (info)->tls_sec->vma
2008 + elf_hash_table (info)->tls_sec->size);
100382c7
HPN		 2009
2010 /* The TLS-relative offset is the relocation. */
2011 break;
2012
2013 default:
2014 BFD_FAIL ();
2015 return FALSE;
915e5146
HPN		 2016 }
2017
2018 r = cris_final_link_relocate (howto, input_bfd, input_section,
2019 contents, rel, relocation);
2020
2021 if (r != bfd_reloc_ok)
2022 {
2023 const char * msg = (const char *) NULL;
2024
2025 switch (r)
2026 {
2027 case bfd_reloc_overflow:
2028 r = info->callbacks->reloc_overflow
dfeffb9f
L		 2029 (info, (h ? &h->root : NULL), symname, howto->name,
2030 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
100382c7
HPN		 2031 if (additional_relocation_error_msg_count > 0)
2032 {
2033 additional_relocation_error_msg_count--;
2034 switch (r_type)
2035 {
2036 case R_CRIS_16_GOTPLT:
2037 case R_CRIS_16_GOT:
2038
2039 /* Not just TLS is involved here, so we make
2040 generation and message depend on -fPIC/-fpic
2041 only. */
2042 case R_CRIS_16_GOT_TPREL:
2043 case R_CRIS_16_GOT_GD:
2044 (*_bfd_error_handler)
2045 (_("(too many global variables for -fpic:"
2046 " recompile with -fPIC)"));
2047 break;
2048
2049 case R_CRIS_16_TPREL:
2050 case R_CRIS_16_DTPREL:
2051 (*_bfd_error_handler)
2052 (_("(thread-local data too big for -fpic or"
2053 " -msmall-tls: recompile with -fPIC or"
2054 " -mno-small-tls)"));
2055 break;
2056
2057 /* No known cause for overflow for other relocs. */
2058 default:
2059 break;
2060 }
2061 }
915e5146
HPN		 2062 break;
2063
2064 case bfd_reloc_undefined:
2065 r = info->callbacks->undefined_symbol
dc810e39 2066 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 2067 TRUE);
915e5146
HPN		 2068 break;
2069
2070 case bfd_reloc_outofrange:
2071 msg = _("internal error: out of range error");
2072 break;
2073
2074 case bfd_reloc_notsupported:
2075 msg = _("internal error: unsupported relocation error");
2076 break;
2077
2078 case bfd_reloc_dangerous:
2079 msg = _("internal error: dangerous relocation");
2080 break;
2081
2082 default:
2083 msg = _("internal error: unknown error");
2084 break;
2085 }
2086
2087 if (msg)
2088 r = info->callbacks->warning
dc810e39 2089 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN		 2090
2091 if (! r)
b34976b6 2092 return FALSE;
915e5146
HPN		 2093 }
2094 }
2095
b34976b6 2096 return TRUE;
915e5146
HPN		 2097}
2098\f
2099/* Finish up dynamic symbol handling. We set the contents of various
2100 dynamic sections here. */
2101
b34976b6 2102static bfd_boolean
915e5146
HPN		 2103elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2104 bfd *output_bfd;
2105 struct bfd_link_info *info;
2106 struct elf_link_hash_entry *h;
2107 Elf_Internal_Sym *sym;
2108{
2109 bfd *dynobj;
bac23f82
HPN		 2110
2111 /* Where in the plt entry to put values. */
915e5146
HPN		 2112 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2113
bac23f82
HPN		 2114 /* What offset to add to the distance to the first PLT entry for the
2115 value at plt_off3. */
2116 int plt_off3_value_bias = 4;
2117
2118 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2119 for PIC and non-PIC for v32 and pre-v32). */
2120 int plt_stub_offset = 8;
2121 int plt_entry_size = PLT_ENTRY_SIZE;
2122 const bfd_byte *plt_entry = elf_cris_plt_entry;
2123 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2124
2125 /* Adjust the various PLT entry offsets. */
2126 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2127 {
2128 plt_off2 = 14;
2129 plt_off3 = 20;
2130 plt_off3_value_bias = -2;
2131 plt_stub_offset = 12;
2132 plt_entry_size = PLT_ENTRY_SIZE_V32;
2133 plt_entry = elf_cris_plt_entry_v32;
2134 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2135 }
2136
915e5146
HPN		 2137 dynobj = elf_hash_table (info)->dynobj;
2138
2139 if (h->plt.offset != (bfd_vma) -1)
2140 {
2141 asection *splt;
2142 asection *sgotplt;
2143 asection *sgot;
2144 asection *srela;
2145 bfd_vma got_base;
2146
2147 bfd_vma gotplt_offset
100382c7 2148 = elf_cris_hash_entry (h)->gotplt_offset;
915e5146 2149 Elf_Internal_Rela rela;
947216bf 2150 bfd_byte *loc;
b34976b6 2151 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146 2152
0bdf8d40
HPN		 2153 /* Get the index in the .rela.plt relocations for the .got.plt
2154 entry that corresponds to this symbol.
2155 We have to count backwards here, and the result is only valid
2156 as an index into .rela.plt. We also have to undo the effect
2157 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2158 .got.plt) for which gotplt_offset is adjusted, because while
2159 that entry goes into .got.plt, its relocation goes into
2160 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2161 processed as part of the runtime lazy .rela.plt relocation).
2162 FIXME: There be literal constants here... */
2163 bfd_vma rela_plt_index
2164 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2165 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
915e5146
HPN		 2166
2167 /* Get the offset into the .got table of the entry that corresponds
2168 to this function. Note that we embed knowledge that "incoming"
2169 .got goes after .got.plt in the output without padding (pointer
2170 aligned). However, that knowledge is present in several other
c152c796 2171 places too. */
915e5146
HPN		 2172 bfd_vma got_offset
2173 = (has_gotplt
2174 ? gotplt_offset
2175 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2176
2177 /* This symbol has an entry in the procedure linkage table. Set it
2178 up. */
2179
2180 BFD_ASSERT (h->dynindx != -1);
2181
2182 splt = bfd_get_section_by_name (dynobj, ".plt");
2183 sgot = bfd_get_section_by_name (dynobj, ".got");
2184 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2185 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2186 BFD_ASSERT (splt != NULL && sgotplt != NULL
2187 && (! has_gotplt || srela != NULL));
2188
2189 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2190
2191 /* Fill in the entry in the procedure linkage table. */
2192 if (! info->shared)
2193 {
bac23f82
HPN		 2194 memcpy (splt->contents + h->plt.offset, plt_entry,
2195 plt_entry_size);
915e5146
HPN		 2196
2197 /* We need to enter the absolute address of the GOT entry here. */
2198 bfd_put_32 (output_bfd, got_base + got_offset,
2199 splt->contents + h->plt.offset + plt_off1);
2200 }
2201 else
2202 {
bac23f82
HPN		 2203 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2204 plt_entry_size);
915e5146
HPN		 2205 bfd_put_32 (output_bfd, got_offset,
2206 splt->contents + h->plt.offset + plt_off1);
2207 }
2208
2209 /* Fill in the plt entry and make a relocation, if this is a "real"
2210 PLT entry. */
2211 if (has_gotplt)
2212 {
bac23f82 2213 /* Fill in the offset to the reloc table. */
915e5146 2214 bfd_put_32 (output_bfd,
0bdf8d40 2215 rela_plt_index * sizeof (Elf32_External_Rela),
915e5146
HPN		 2216 splt->contents + h->plt.offset + plt_off2);
2217
2218 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN		 2219 bfd_put_32 (output_bfd,
2220 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN		 2221 splt->contents + h->plt.offset + plt_off3);
2222
2223 /* Fill in the entry in the global offset table with the address of
2224 the relocating stub. */
2225 bfd_put_32 (output_bfd,
2226 (splt->output_section->vma
2227 + splt->output_offset
2228 + h->plt.offset
bac23f82 2229 + plt_stub_offset),
915e5146
HPN		 2230 sgotplt->contents + got_offset);
2231
2232 /* Fill in the entry in the .rela.plt section. */
2233 rela.r_offset = (sgotplt->output_section->vma
2234 + sgotplt->output_offset
2235 + got_offset);
2236 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2237 rela.r_addend = 0;
0bdf8d40 2238 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
947216bf 2239 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2240 }
2241
f5385ebf 2242 if (!h->def_regular)
915e5146
HPN		 2243 {
2244 /* Mark the symbol as undefined, rather than as defined in
2245 the .plt section. Leave the value alone. */
2246 sym->st_shndx = SHN_UNDEF;
2247
2248 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2249 know whether resetting the value is significant; if it really
2250 is, rather than a quirk or bug in the sparc port, then I
2251 believe we'd see this elsewhere. */
2252 /* If the symbol is weak, we do need to clear the value.
2253 Otherwise, the PLT entry would provide a definition for
2254 the symbol even if the symbol wasn't defined anywhere,
2255 and so the symbol would never be NULL. */
f5385ebf 2256 if (!h->ref_regular_nonweak)
915e5146
HPN		 2257 sym->st_value = 0;
2258 }
2259 }
2260
e4a2175c
HPN		 2261 /* For an ordinary program, we emit .got relocs only for symbols that
2262 are in the dynamic-symbols table and are either defined by the
2263 program or are undefined weak symbols, or are function symbols
2264 where we do not output a PLT: the PLT reloc was output above and all
2265 references to the function symbol are redirected to the PLT. */
4d96d128 2266 if (h->got.offset != (bfd_vma) -1
100382c7 2267 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
6849c52f
HPN		 2268 && (info->shared
2269 || (h->dynindx != -1
e4a2175c 2270 && h->plt.offset == (bfd_vma) -1
f5385ebf 2271 && !h->def_regular
6849c52f 2272 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN		 2273 {
2274 asection *sgot;
2275 asection *srela;
2276 Elf_Internal_Rela rela;
947216bf 2277 bfd_byte *loc;
dc810e39 2278 bfd_byte *where;
915e5146
HPN		 2279
2280 /* This symbol has an entry in the global offset table. Set it up. */
2281
2282 sgot = bfd_get_section_by_name (dynobj, ".got");
2283 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2284 BFD_ASSERT (sgot != NULL && srela != NULL);
2285
2286 rela.r_offset = (sgot->output_section->vma
2287 + sgot->output_offset
dc810e39 2288 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN		 2289
2290 /* If this is a static link, or it is a -Bsymbolic link and the
2291 symbol is defined locally or was forced to be local because
2292 of a version file, we just want to emit a RELATIVE reloc.
2293 The entry in the global offset table will already have been
2294 initialized in the relocate_section function. */
dc810e39 2295 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN		 2296 if (! elf_hash_table (info)->dynamic_sections_created
2297 || (info->shared
2298 && (info->symbolic || h->dynindx == -1)
f5385ebf 2299 && h->def_regular))
915e5146
HPN		 2300 {
2301 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 2302 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN		 2303 }
2304 else
2305 {
dc810e39 2306 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN		 2307 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2308 rela.r_addend = 0;
2309 }
2310
947216bf
AM		 2311 loc = srela->contents;
2312 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2313 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2314 }
2315
f5385ebf 2316 if (h->needs_copy)
915e5146
HPN		 2317 {
2318 asection *s;
2319 Elf_Internal_Rela rela;
947216bf 2320 bfd_byte *loc;
915e5146
HPN		 2321
2322 /* This symbol needs a copy reloc. Set it up. */
2323
2324 BFD_ASSERT (h->dynindx != -1
2325 && (h->root.type == bfd_link_hash_defined
2326 || h->root.type == bfd_link_hash_defweak));
2327
2328 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2329 ".rela.bss");
2330 BFD_ASSERT (s != NULL);
2331
2332 rela.r_offset = (h->root.u.def.value
2333 + h->root.u.def.section->output_section->vma
2334 + h->root.u.def.section->output_offset);
2335 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2336 rela.r_addend = 0;
947216bf
AM		 2337 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2338 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2339 }
2340
2341 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2342 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 2343 || h == elf_hash_table (info)->hgot)
915e5146
HPN		 2344 sym->st_shndx = SHN_ABS;
2345
b34976b6 2346 return TRUE;
915e5146
HPN		 2347}
2348\f
100382c7
HPN		 2349/* Finish up the dynamic sections. Do *not* emit relocs here, as their
2350 offsets were changed, as part of -z combreloc handling, from those we
2351 computed. */
915e5146 2352
b34976b6 2353static bfd_boolean
915e5146
HPN		 2354elf_cris_finish_dynamic_sections (output_bfd, info)
2355 bfd *output_bfd;
2356 struct bfd_link_info *info;
2357{
2358 bfd *dynobj;
2359 asection *sgot;
2360 asection *sdyn;
2361
2362 dynobj = elf_hash_table (info)->dynobj;
2363
2364 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2365 BFD_ASSERT (sgot != NULL);
2366 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2367
2368 if (elf_hash_table (info)->dynamic_sections_created)
2369 {
2370 asection *splt;
2371 Elf32_External_Dyn *dyncon, *dynconend;
2372
2373 splt = bfd_get_section_by_name (dynobj, ".plt");
2374 BFD_ASSERT (splt != NULL && sdyn != NULL);
2375
2376 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 2377 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN		 2378 for (; dyncon < dynconend; dyncon++)
2379 {
2380 Elf_Internal_Dyn dyn;
2381 asection *s;
2382
2383 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2384
2385 switch (dyn.d_tag)
2386 {
2387 default:
2388 break;
2389
2390 case DT_PLTGOT:
2391 s = bfd_get_section_by_name (output_bfd, ".got");
2392 BFD_ASSERT (s != NULL);
2393 dyn.d_un.d_ptr = s->vma;
2394 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2395 break;
2396
2397 case DT_JMPREL:
2398 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2399 if all symbols are found in the .got (not .got.plt). */
2400 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2401 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2402 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2403 break;
2404
2405 case DT_PLTRELSZ:
2406 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2407 if (s == NULL)
2408 dyn.d_un.d_val = 0;
915e5146 2409 else
eea6121a 2410 dyn.d_un.d_val = s->size;
915e5146
HPN		 2411 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2412 break;
2413
2414 case DT_RELASZ:
2415 /* The procedure linkage table relocs (DT_JMPREL) should
2416 not be included in the overall relocs (DT_RELA).
2417 Therefore, we override the DT_RELASZ entry here to
2418 make it not include the JMPREL relocs. Since the
2419 linker script arranges for .rela.plt to follow all
2420 other relocation sections, we don't have to worry
2421 about changing the DT_RELA entry. */
2422 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2423 if (s != NULL)
eea6121a 2424 dyn.d_un.d_val -= s->size;
915e5146
HPN		 2425 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2426 break;
2427 }
2428 }
2429
2430 /* Fill in the first entry in the procedure linkage table. */
eea6121a 2431 if (splt->size > 0)
915e5146 2432 {
bac23f82
HPN		 2433 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2434 {
2435 if (info->shared)
2436 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2437 PLT_ENTRY_SIZE_V32);
2438 else
2439 {
2440 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2441 PLT_ENTRY_SIZE_V32);
2442 bfd_put_32 (output_bfd,
2443 sgot->output_section->vma
2444 + sgot->output_offset + 4,
2445 splt->contents + 4);
2446
2447 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2448 = PLT_ENTRY_SIZE_V32;
2449 }
2450 }
915e5146 2451 else
bac23f82
HPN		 2452 {
2453 if (info->shared)
2454 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2455 PLT_ENTRY_SIZE);
2456 else
2457 {
2458 memcpy (splt->contents, elf_cris_plt0_entry,
2459 PLT_ENTRY_SIZE);
2460 bfd_put_32 (output_bfd,
2461 sgot->output_section->vma
2462 + sgot->output_offset + 4,
2463 splt->contents + 6);
2464 bfd_put_32 (output_bfd,
2465 sgot->output_section->vma
2466 + sgot->output_offset + 8,
2467 splt->contents + 14);
2468
2469 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2470 = PLT_ENTRY_SIZE;
2471 }
915e5146
HPN		 2472 }
2473 }
2474 }
2475
2476 /* Fill in the first three entries in the global offset table. */
eea6121a 2477 if (sgot->size > 0)
915e5146
HPN		 2478 {
2479 if (sdyn == NULL)
2480 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2481 else
2482 bfd_put_32 (output_bfd,
2483 sdyn->output_section->vma + sdyn->output_offset,
2484 sgot->contents);
2485 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2486 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2487 }
2488
2489 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2490
b34976b6 2491 return TRUE;
06c15ad7
HPN		 2492}
2493\f
2494/* Return the section that should be marked against GC for a given
2495 relocation. */
2496
2497static asection *
07adf181
AM		 2498cris_elf_gc_mark_hook (asection *sec,
2499 struct bfd_link_info *info,
2500 Elf_Internal_Rela *rel,
2501 struct elf_link_hash_entry *h,
2502 Elf_Internal_Sym *sym)
06c15ad7 2503{
100382c7 2504 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
06c15ad7 2505 if (h != NULL)
100382c7 2506 switch (r_type)
07adf181
AM		 2507 {
2508 case R_CRIS_GNU_VTINHERIT:
2509 case R_CRIS_GNU_VTENTRY:
2510 return NULL;
100382c7
HPN		 2511
2512 default:
2513 break;
07adf181 2514 }
06c15ad7 2515
07adf181 2516 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN		 2517}
2518
2519/* Update the got entry reference counts for the section being removed. */
2520
b34976b6 2521static bfd_boolean
07adf181
AM		 2522cris_elf_gc_sweep_hook (bfd *abfd,
2523 struct bfd_link_info *info,
2524 asection *sec,
2525 const Elf_Internal_Rela *relocs)
06c15ad7 2526{
915e5146
HPN		 2527 Elf_Internal_Shdr *symtab_hdr;
2528 struct elf_link_hash_entry **sym_hashes;
2529 bfd_signed_vma *local_got_refcounts;
2530 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN		 2531 bfd *dynobj;
2532 asection *sgot;
2533 asection *srelgot;
2534
7dda2462
TG		 2535 if (info->relocatable)
2536 return TRUE;
2537
915e5146
HPN		 2538 dynobj = elf_hash_table (info)->dynobj;
2539 if (dynobj == NULL)
b34976b6 2540 return TRUE;
915e5146 2541
babfd660
KH		 2542 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2543 sym_hashes = elf_sym_hashes (abfd);
2544 local_got_refcounts = elf_local_got_refcounts (abfd);
2545
915e5146
HPN		 2546 sgot = bfd_get_section_by_name (dynobj, ".got");
2547 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2548
2549 relend = relocs + sec->reloc_count;
2550 for (rel = relocs; rel < relend; rel++)
2551 {
babfd660 2552 unsigned long r_symndx;
3eb128b2 2553 struct elf_link_hash_entry *h = NULL;
100382c7
HPN		 2554 bfd_signed_vma got_element_size = 4;
2555 bfd_signed_vma *specific_refcount = NULL;
2556 enum elf_cris_reloc_type r_type;
3eb128b2
AM		 2557
2558 r_symndx = ELF32_R_SYM (rel->r_info);
2559 if (r_symndx >= symtab_hdr->sh_info)
2560 {
2561 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2562 while (h->root.type == bfd_link_hash_indirect
2563 || h->root.type == bfd_link_hash_warning)
2564 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2565 }
babfd660 2566
100382c7
HPN		 2567 r_type = ELF32_R_TYPE (rel->r_info);
2568 switch (r_type)
2569 {
2570 case R_CRIS_32_GOT:
2571 case R_CRIS_16_GOT:
2572 case R_CRIS_16_GOTPLT:
2573 case R_CRIS_32_GOTPLT:
2574 specific_refcount = h != NULL
2575 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2576 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2577 break;
2578
2579 case R_CRIS_32_GD:
2580 case R_CRIS_32_GOT_GD:
2581 case R_CRIS_16_GOT_GD:
2582 got_element_size = 8;
2583 specific_refcount = h != NULL
2584 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2585 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2586 break;
2587
75f500d7 2588 case R_CRIS_32_IE:
100382c7
HPN		 2589 case R_CRIS_16_GOT_TPREL:
2590 case R_CRIS_32_GOT_TPREL:
2591 specific_refcount = h != NULL
2592 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2593 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2594 break;
2595
2596 default:
2597 break;
2598 }
2599
2600 switch (r_type)
915e5146 2601 {
75f500d7 2602 case R_CRIS_32_IE:
100382c7
HPN		 2603 case R_CRIS_32_GD:
2604 case R_CRIS_16_GOT_TPREL:
2605 case R_CRIS_32_GOT_TPREL:
2606 case R_CRIS_32_GOT_GD:
2607 case R_CRIS_16_GOT_GD:
915e5146
HPN		 2608 case R_CRIS_16_GOT:
2609 case R_CRIS_32_GOT:
3eb128b2 2610 if (h != NULL)
915e5146 2611 {
100382c7
HPN		 2612 /* If the counters are 0 when we got here, we've
2613 miscounted somehow somewhere, an internal error. */
2614 BFD_ASSERT (h->got.refcount > 0);
2615 --h->got.refcount;
2616
2617 BFD_ASSERT (*specific_refcount > 0);
2618 --*specific_refcount;
2619 if (*specific_refcount == 0)
915e5146 2620 {
100382c7
HPN		 2621 /* We don't need the .got entry any more. */
2622 sgot->size -= got_element_size;
2623 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2624 }
2625 break;
2626 }
2627
2628 local_got_reloc:
2629 if (local_got_refcounts != NULL)
2630 {
100382c7
HPN		 2631 /* If the counters are 0 when we got here, we've
2632 miscounted somehow somewhere, an internal error. */
2633 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2634 --local_got_refcounts[r_symndx];
2635
2636 BFD_ASSERT (*specific_refcount > 0);
2637 --*specific_refcount;
2638 if (*specific_refcount == 0)
915e5146 2639 {
100382c7
HPN		 2640 /* We don't need the .got entry any more. */
2641 sgot->size -= got_element_size;
2642 if (info->shared)
2643 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2644 }
2645 }
2646 break;
2647
2648 case R_CRIS_16_GOTPLT:
2649 case R_CRIS_32_GOTPLT:
2650 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2651 if (h == NULL)
915e5146 2652 goto local_got_reloc;
e4a2175c 2653 /* Fall through. */
3eb128b2 2654
915e5146
HPN		 2655 case R_CRIS_32_PLT_GOTREL:
2656 /* FIXME: We don't garbage-collect away the .got section. */
2657 if (local_got_refcounts != NULL)
2658 local_got_refcounts[-1]--;
2659 /* Fall through. */
3eb128b2 2660
915e5146
HPN		 2661 case R_CRIS_8_PCREL:
2662 case R_CRIS_16_PCREL:
2663 case R_CRIS_32_PCREL:
2664 case R_CRIS_32_PLT_PCREL:
3eb128b2 2665 if (h != NULL)
915e5146 2666 {
0a4787a0
HPN		 2667 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2668 && h->plt.refcount > 0)
915e5146
HPN		 2669 --h->plt.refcount;
2670 }
2671 break;
2672
100382c7
HPN		 2673 case R_CRIS_32_DTPREL:
2674 case R_CRIS_16_DTPREL:
2675 elf_cris_hash_table (info)->dtpmod_refcount--;
2676 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2677 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2678 BFD_ASSERT (local_got_refcounts != NULL);
2679 local_got_refcounts[-1]--;
2680 break;
2681
915e5146
HPN		 2682 default:
2683 break;
2684 }
2685 }
2686
b34976b6 2687 return TRUE;
06c15ad7
HPN		 2688}
2689
915e5146
HPN		 2690/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2691 entry but we found we will not create any. Called when we find we will
4d96d128
HPN		 2692 not have any PLT for this symbol, by for example
2693 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2694 or elf_cris_size_dynamic_sections if no dynamic sections will be
2695 created (we're only linking static objects). */
915e5146 2696
b34976b6 2697static bfd_boolean
915e5146
HPN		 2698elf_cris_adjust_gotplt_to_got (h, p)
2699 struct elf_cris_link_hash_entry *h;
2700 PTR p;
2701{
2702 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2703
e92d460e
AM		 2704 if (h->root.root.type == bfd_link_hash_warning)
2705 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2706
915e5146
HPN		 2707 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2708 if (h->gotplt_refcount <= 0)
b34976b6 2709 return TRUE;
915e5146 2710
100382c7 2711 if (h->reg_got_refcount > 0)
915e5146 2712 {
100382c7
HPN		 2713 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2714 Probably not necessary at this stage, but keeping them accurate
915e5146
HPN		 2715 helps avoiding surprises later. */
2716 h->root.got.refcount += h->gotplt_refcount;
100382c7 2717 h->reg_got_refcount += h->gotplt_refcount;
5e0f5ae3 2718 h->gotplt_refcount = 0;
915e5146
HPN		 2719 }
2720 else
2721 {
4d96d128 2722 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM		 2723 bfd *dynobj = elf_hash_table (info)->dynobj;
2724 asection *sgot;
2725 asection *srelgot;
2726
2727 BFD_ASSERT (dynobj != NULL);
2728 sgot = bfd_get_section_by_name (dynobj, ".got");
2729 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146 2730
100382c7
HPN		 2731 /* Put accurate refcounts there. */
2732 h->root.got.refcount += h->gotplt_refcount;
2733 h->reg_got_refcount = h->gotplt_refcount;
915e5146 2734
5e0f5ae3 2735 h->gotplt_refcount = 0;
915e5146 2736
44aa49bb
HPN		 2737 /* We always have a .got and a .rela.got section if there were
2738 GOTPLT relocs in input. */
2739 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN		 2740
2741 /* Allocate space in the .got section. */
eea6121a 2742 sgot->size += 4;
915e5146
HPN		 2743
2744 /* Allocate relocation space. */
eea6121a 2745 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 2746 }
2747
b34976b6 2748 return TRUE;
915e5146
HPN		 2749}
2750
2751/* Try to fold PLT entries with GOT entries. There are two cases when we
2752 want to do this:
2753
2754 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN		 2755 references, and this is not the executable. We don't have to
2756 generate a PLT at all.
915e5146 2757
e4a2175c
HPN		 2758 - When there are both (ordinary) PLT references and GOT references,
2759 and this isn't the executable.
915e5146 2760 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN		 2761 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2762 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN		 2763
2764 Though the latter case is handled when room for the PLT is allocated,
2765 not here.
2766
e4a2175c
HPN		 2767 By folding into the GOT, we may need a round-trip to a PLT in the
2768 executable for calls, a loss in performance. Still, losing a
2769 reloc is a win in size and at least in start-up time.
2770
915e5146
HPN		 2771 Note that this function is called before symbols are forced local by
2772 version scripts. The differing cases are handled by
2773 elf_cris_hide_symbol. */
2774
b34976b6 2775static bfd_boolean
915e5146
HPN		 2776elf_cris_try_fold_plt_to_got (h, p)
2777 struct elf_cris_link_hash_entry *h;
2778 PTR p;
2779{
2780 struct bfd_link_info *info = (struct bfd_link_info *) p;
2781
2782 /* If there are no GOT references for this symbol, we can't fold any
2783 other reference so there's nothing to do. Likewise if there are no
2784 PLT references; GOTPLT references included. */
2785 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2786 return TRUE;
915e5146
HPN		 2787
2788 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2789 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2790
2791 if (h->gotplt_refcount == h->root.plt.refcount)
2792 {
4d96d128 2793 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN		 2794 references. Convert PLT to GOT references. */
2795 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2796 return FALSE;
915e5146
HPN		 2797
2798 /* Clear the PLT references, so no PLT will be created. */
2799 h->root.plt.offset = (bfd_vma) -1;
2800 }
2801
b34976b6 2802 return TRUE;
915e5146
HPN		 2803}
2804
2805/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2806 to use a GOT entry (and create one) rather than requiring a GOTPLT
2807 entry. */
2808
2809static void
e5094212 2810elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN		 2811 struct bfd_link_info *info;
2812 struct elf_link_hash_entry *h;
b34976b6 2813 bfd_boolean force_local;
915e5146
HPN		 2814{
2815 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2816
e5094212 2817 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN		 2818}
2819
2820/* Adjust a symbol defined by a dynamic object and referenced by a
2821 regular object. The current definition is in some section of the
2822 dynamic object, but we're not including those sections. We have to
2823 change the definition to something the rest of the link can
2824 understand. */
2825
b34976b6 2826static bfd_boolean
915e5146
HPN		 2827elf_cris_adjust_dynamic_symbol (info, h)
2828 struct bfd_link_info *info;
2829 struct elf_link_hash_entry *h;
2830{
2831 bfd *dynobj;
2832 asection *s;
bac23f82 2833 bfd_size_type plt_entry_size;
915e5146
HPN		 2834
2835 dynobj = elf_hash_table (info)->dynobj;
2836
2837 /* Make sure we know what is going on here. */
2838 BFD_ASSERT (dynobj != NULL
f5385ebf 2839 && (h->needs_plt
f6e332e6 2840 || h->u.weakdef != NULL
f5385ebf
AM		 2841 || (h->def_dynamic
2842 && h->ref_regular
2843 && !h->def_regular)));
915e5146 2844
bac23f82
HPN		 2845 plt_entry_size
2846 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2847 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2848
915e5146
HPN		 2849 /* If this is a function, put it in the procedure linkage table. We
2850 will fill in the contents of the procedure linkage table later,
2851 when we know the address of the .got section. */
2852 if (h->type == STT_FUNC
f5385ebf 2853 || h->needs_plt)
915e5146 2854 {
6849c52f
HPN		 2855 /* If we link a program (not a DSO), we'll get rid of unnecessary
2856 PLT entries; we point to the actual symbols -- even for pic
2857 relocs, because a program built with -fpic should have the same
2858 result as one built without -fpic, specifically considering weak
2859 symbols.
2860 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2861 if (! info->shared
f5385ebf 2862 && !h->def_dynamic)
915e5146
HPN		 2863 {
2864 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN		 2865 but the symbol was not defined by a dynamic object. In such
2866 a case, we don't actually need to build a procedure linkage
2867 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2868 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM		 2869 BFD_ASSERT (h->needs_plt);
2870 h->needs_plt = 0;
915e5146 2871 h->plt.offset = (bfd_vma) -1;
915e5146
HPN		 2872 return
2873 elf_cris_adjust_gotplt_to_got ((struct
2874 elf_cris_link_hash_entry *) h,
2875 info);
2876 }
2877
e4a2175c
HPN		 2878 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2879 where a pointer-equivalent symbol was unimportant (i.e. more
2880 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2881 of the PLT. We can't for the executable, because the GOT
2882 entries will point to the PLT there (and be constant). */
2883 if (info->shared
2884 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2885 h, info))
b34976b6 2886 return FALSE;
915e5146
HPN		 2887
2888 /* GC or folding may have rendered this entry unused. */
2889 if (h->plt.refcount <= 0)
2890 {
f5385ebf 2891 h->needs_plt = 0;
915e5146 2892 h->plt.offset = (bfd_vma) -1;
b34976b6 2893 return TRUE;
915e5146
HPN		 2894 }
2895
2896 /* Make sure this symbol is output as a dynamic symbol. */
2897 if (h->dynindx == -1)
2898 {
c152c796 2899 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2900 return FALSE;
915e5146
HPN		 2901 }
2902
2903 s = bfd_get_section_by_name (dynobj, ".plt");
2904 BFD_ASSERT (s != NULL);
2905
2906 /* If this is the first .plt entry, make room for the special
2907 first entry. */
eea6121a 2908 if (s->size == 0)
bac23f82 2909 s->size += plt_entry_size;
915e5146
HPN		 2910
2911 /* If this symbol is not defined in a regular file, and we are
2912 not generating a shared library, then set the symbol to this
6849c52f 2913 location in the .plt. */
915e5146 2914 if (!info->shared
f5385ebf 2915 && !h->def_regular)
915e5146
HPN		 2916 {
2917 h->root.u.def.section = s;
eea6121a 2918 h->root.u.def.value = s->size;
915e5146
HPN		 2919 }
2920
4d96d128
HPN		 2921 /* If there's already a GOT entry, use that, not a .got.plt. A
2922 GOT field still has a reference count when we get here; it's
e4a2175c
HPN		 2923 not yet changed to an offset. We can't do this for an
2924 executable, because then the reloc associated with the PLT
2925 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2926 this to elf_cris_try_fold_plt_to_got. */
2927 if (info->shared && h->got.refcount > 0)
915e5146
HPN		 2928 {
2929 h->got.refcount += h->plt.refcount;
2930
2931 /* Mark the PLT offset to use the GOT entry by setting the low
2932 bit in the plt offset; it is always a multiple of
bac23f82
HPN		 2933 plt_entry_size (which is at least a multiple of 2). */
2934 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN		 2935
2936 /* Change the PLT refcount to an offset. */
eea6121a 2937 h->plt.offset = s->size;
915e5146
HPN		 2938
2939 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2940 that the got entry should be used instead. */
2941 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2942 h)->gotplt_offset == 0);
2943
2944 /* Make room for this entry. */
bac23f82 2945 s->size += plt_entry_size;
915e5146 2946
b34976b6 2947 return TRUE;
915e5146
HPN		 2948 }
2949
2950 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2951 h->plt.offset = s->size;
915e5146
HPN		 2952
2953 /* Make room for this entry. */
bac23f82 2954 s->size += plt_entry_size;
915e5146
HPN		 2955
2956 /* We also need to make an entry in the .got.plt section, which
2957 will be placed in the .got section by the linker script. */
2958 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2959 = elf_cris_hash_table (info)->next_gotplt_entry;
2960 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2961
2962 s = bfd_get_section_by_name (dynobj, ".got.plt");
2963 BFD_ASSERT (s != NULL);
eea6121a 2964 s->size += 4;
915e5146
HPN		 2965
2966 /* We also need to make an entry in the .rela.plt section. */
2967
2968 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2969 BFD_ASSERT (s != NULL);
eea6121a 2970 s->size += sizeof (Elf32_External_Rela);
915e5146 2971
b34976b6 2972 return TRUE;
915e5146
HPN		 2973 }
2974
2975 /* Reinitialize the plt offset now that it is not used as a reference
2976 count any more. */
2977 h->plt.offset = (bfd_vma) -1;
2978
2979 /* If this is a weak symbol, and there is a real definition, the
2980 processor independent code will have arranged for us to see the
2981 real definition first, and we can just use the same value. */
f6e332e6 2982 if (h->u.weakdef != NULL)
915e5146 2983 {
f6e332e6
AM		 2984 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2985 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2986 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2987 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 2988 return TRUE;
915e5146
HPN		 2989 }
2990
2991 /* This is a reference to a symbol defined by a dynamic object which
2992 is not a function. */
2993
2994 /* If we are creating a shared library, we must presume that the
2995 only references to the symbol are via the global offset table.
2996 For such cases we need not do anything here; the relocations will
2997 be handled correctly by relocate_section. */
2998 if (info->shared)
b34976b6 2999 return TRUE;
915e5146
HPN		 3000
3001 /* If there are no references to this symbol that do not use the
3002 GOT, we don't need to generate a copy reloc. */
f5385ebf 3003 if (!h->non_got_ref)
b34976b6 3004 return TRUE;
915e5146 3005
909272ee
AM		 3006 if (h->size == 0)
3007 {
3008 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3009 h->root.root.string);
3010 return TRUE;
3011 }
3012
915e5146
HPN		 3013 /* We must allocate the symbol in our .dynbss section, which will
3014 become part of the .bss section of the executable. There will be
3015 an entry for this symbol in the .dynsym section. The dynamic
3016 object will contain position independent code, so all references
3017 from the dynamic object to this symbol will go through the global
3018 offset table. The dynamic linker will use the .dynsym entry to
3019 determine the address it must put in the global offset table, so
3020 both the dynamic object and the regular object will refer to the
3021 same memory location for the variable. */
3022
3023 s = bfd_get_section_by_name (dynobj, ".dynbss");
3024 BFD_ASSERT (s != NULL);
3025
3026 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3027 copy the initial value out of the dynamic object and into the
3028 runtime process image. We need to remember the offset into the
3029 .rela.bss section we are going to use. */
3030 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3031 {
3032 asection *srel;
3033
3034 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3035 BFD_ASSERT (srel != NULL);
eea6121a 3036 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3037 h->needs_copy = 1;
915e5146
HPN		 3038 }
3039
027297b7 3040 return _bfd_elf_adjust_dynamic_copy (h, s);
915e5146
HPN		 3041}
3042
237bc7f0
HPN		 3043/* Adjust our "subclass" elements for an indirect symbol. */
3044
3045static void
3046elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3047 struct elf_link_hash_entry *dir,
3048 struct elf_link_hash_entry *ind)
3049{
3050 struct elf_cris_link_hash_entry *edir, *eind;
3051
3052 edir = (struct elf_cris_link_hash_entry *) dir;
3053 eind = (struct elf_cris_link_hash_entry *) ind;
3054
867ea5fd
HPN		 3055 /* Only indirect symbols are replaced; we're not interested in
3056 updating any of EIND's fields for other symbols. */
3057 if (eind->root.root.type != bfd_link_hash_indirect)
451ffe63
HPN		 3058 {
3059 /* Still, we need to copy flags for e.g. weak definitions. */
3060 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3061 return;
3062 }
867ea5fd 3063
237bc7f0
HPN		 3064 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3065 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3066
3067#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3068#define XMOVE(F) XMOVOPZ (F, +=, 0)
3069 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3070 XMOVE (gotplt_refcount);
3071 XMOVE (gotplt_offset);
3072 XMOVE (reg_got_refcount);
3073 XMOVE (tprel_refcount);
3074 XMOVE (dtp_refcount);
3075#undef XMOVE
3076#undef XMOVOPZ
3077
3078 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3079}
3080
915e5146 3081/* Look through the relocs for a section during the first phase. */
a7c10850 3082
b34976b6 3083static bfd_boolean
06c15ad7
HPN		 3084cris_elf_check_relocs (abfd, info, sec, relocs)
3085 bfd *abfd;
3086 struct bfd_link_info *info;
3087 asection *sec;
3088 const Elf_Internal_Rela *relocs;
3089{
915e5146 3090 bfd *dynobj;
06c15ad7 3091 Elf_Internal_Shdr *symtab_hdr;
5582a088 3092 struct elf_link_hash_entry **sym_hashes;
915e5146 3093 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN		 3094 const Elf_Internal_Rela *rel;
3095 const Elf_Internal_Rela *rel_end;
915e5146
HPN		 3096 asection *sgot;
3097 asection *srelgot;
3098 asection *sreloc;
a7c10850 3099
1049f94e 3100 if (info->relocatable)
b34976b6 3101 return TRUE;
a7c10850 3102
915e5146 3103 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN		 3104 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3105 sym_hashes = elf_sym_hashes (abfd);
915e5146
HPN		 3106 local_got_refcounts = elf_local_got_refcounts (abfd);
3107
3108 sgot = NULL;
3109 srelgot = NULL;
3110 sreloc = NULL;
3111
06c15ad7
HPN		 3112 rel_end = relocs + sec->reloc_count;
3113 for (rel = relocs; rel < rel_end; rel++)
3114 {
3115 struct elf_link_hash_entry *h;
3116 unsigned long r_symndx;
915e5146 3117 enum elf_cris_reloc_type r_type;
100382c7
HPN		 3118 bfd_signed_vma got_element_size = 4;
3119 unsigned long r_symndx_lgot = INT_MAX;
a7c10850 3120
06c15ad7
HPN		 3121 r_symndx = ELF32_R_SYM (rel->r_info);
3122 if (r_symndx < symtab_hdr->sh_info)
100382c7
HPN		 3123 {
3124 h = NULL;
3125 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3126 }
06c15ad7 3127 else
973a3492
L		 3128 {
3129 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3130 while (h->root.type == bfd_link_hash_indirect
3131 || h->root.type == bfd_link_hash_warning)
3132 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3133 }
a7c10850 3134
915e5146
HPN		 3135 r_type = ELF32_R_TYPE (rel->r_info);
3136
3137 /* Some relocs require linker-created sections; we need to hang them
3138 on the first input bfd we found that contained dynamic relocs. */
3139 switch (r_type)
3140 {
100382c7
HPN		 3141 case R_CRIS_16_DTPREL:
3142 case R_CRIS_32_DTPREL:
3143 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3144 entry at index 3. */
3145 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3146 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3147 elf_cris_hash_table (info)->dtpmod_refcount++;
3148 /* Fall through. */
3149
75f500d7 3150 case R_CRIS_32_IE:
100382c7
HPN		 3151 case R_CRIS_32_GD:
3152 case R_CRIS_16_GOT_GD:
3153 case R_CRIS_32_GOT_GD:
3154 case R_CRIS_32_GOT_TPREL:
3155 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3156 case R_CRIS_16_GOT:
3157 case R_CRIS_32_GOT:
3158 case R_CRIS_32_GOTREL:
3159 case R_CRIS_32_PLT_GOTREL:
3160 case R_CRIS_32_PLT_PCREL:
3161 case R_CRIS_16_GOTPLT:
3162 case R_CRIS_32_GOTPLT:
3163 if (dynobj == NULL)
3164 {
3165 elf_hash_table (info)->dynobj = dynobj = abfd;
3166
bac23f82
HPN		 3167 /* We could handle this if we can get a handle on the
3168 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3169 that, we must insist on dynobj being a specific mach. */
3170 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3171 {
3172 (*_bfd_error_handler)
3173 (_("%B, section %A:\n v10/v32 compatible object %s"
3174 " must not contain a PIC relocation"),
3175 abfd, sec);
3176 return FALSE;
3177 }
3178
915e5146
HPN		 3179 /* Create the .got section, so we can assume it's always
3180 present whenever there's a dynobj. */
3181 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 3182 return FALSE;
915e5146 3183 }
100382c7
HPN		 3184
3185 if (sgot == NULL)
3186 sgot = bfd_get_section_by_name (dynobj, ".got");
3187
3188 if (local_got_refcounts == NULL)
3189 {
3190 bfd_size_type amt;
3191
3192 /* We use index local_got_refcounts[-1] to count all
3193 GOT-relative relocations that do not have explicit
3194 GOT entries. */
3195 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3196 amt *= sizeof (bfd_signed_vma);
3197 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3198 if (local_got_refcounts == NULL)
3199 return FALSE;
3200
3201 local_got_refcounts++;
3202 elf_local_got_refcounts (abfd) = local_got_refcounts;
3203 }
915e5146
HPN		 3204 break;
3205
3206 default:
3207 break;
3208 }
3209
3210 /* Some relocs require a global offset table (but perhaps not a
3211 specific GOT entry). */
4d96d128 3212 switch (r_type)
915e5146 3213 {
100382c7
HPN		 3214 case R_CRIS_16_DTPREL:
3215 case R_CRIS_32_DTPREL:
3216 /* Not requesting .got.rela for an executable: the contents
3217 of the first entry is constant there. For a shared
3218 library, we need .got.rela for the R_CRIS_DTPMOD
3219 relocation at index 3. */
3220 if (!info->shared)
3221 break;
3222 /* Fall through. */
3223
75f500d7 3224 case R_CRIS_32_IE:
100382c7
HPN		 3225 case R_CRIS_32_GD:
3226 case R_CRIS_16_GOT_GD:
3227 case R_CRIS_32_GOT_GD:
3228 case R_CRIS_32_GOT_TPREL:
3229 case R_CRIS_16_GOT_TPREL:
3230 /* Fall through. */
3231
44aa49bb
HPN		 3232 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3233 entry only for local symbols. Unfortunately, we don't know
3234 until later on if there's a version script that forces the
3235 symbol local. We must have the .rela.got section in place
3236 before we know if the symbol looks global now, so we need
3237 to treat the reloc just like for R_CRIS_16_GOT and
3238 R_CRIS_32_GOT. */
3239 case R_CRIS_16_GOTPLT:
3240 case R_CRIS_32_GOTPLT:
915e5146
HPN		 3241 case R_CRIS_16_GOT:
3242 case R_CRIS_32_GOT:
44aa49bb
HPN		 3243 if (srelgot == NULL
3244 && (h != NULL || info->shared))
3245 {
3246 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3247 if (srelgot == NULL)
3248 {
3496cb2a
L		 3249 srelgot = bfd_make_section_with_flags (dynobj,
3250 ".rela.got",
3251 (SEC_ALLOC
3252 | SEC_LOAD
3253 | SEC_HAS_CONTENTS
3254 | SEC_IN_MEMORY
3255 | SEC_LINKER_CREATED
3256 | SEC_READONLY));
44aa49bb 3257 if (srelgot == NULL
44aa49bb 3258 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 3259 return FALSE;
44aa49bb
HPN		 3260 }
3261 }
100382c7 3262 break;
44aa49bb 3263
100382c7
HPN		 3264 default:
3265 break;
3266 }
915e5146 3267
100382c7
HPN		 3268 /* Warn and error for invalid input. */
3269 switch (r_type)
3270 {
75f500d7 3271 case R_CRIS_32_IE:
100382c7
HPN		 3272 case R_CRIS_32_TPREL:
3273 case R_CRIS_16_TPREL:
3274 case R_CRIS_32_GD:
3275 if (info->shared)
915e5146 3276 {
100382c7
HPN		 3277 (*_bfd_error_handler)
3278 (_("%B, section %A:\n relocation %s not valid"
3279 " in a shared object;"
3280 " typically an option mixup, recompile with -fPIC"),
3281 abfd,
3282 sec,
3283 cris_elf_howto_table[r_type].name);
3284 /* Don't return FALSE here; we want messages for all of
3285 these and the error behavior is ungraceful
3286 anyway. */
3287 }
3288 default:
3289 break;
3290 }
915e5146 3291
100382c7
HPN		 3292 switch (r_type)
3293 {
3294 case R_CRIS_32_GD:
3295 case R_CRIS_16_GOT_GD:
3296 case R_CRIS_32_GOT_GD:
3297 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3298 got_element_size = 8;
3299 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3300 break;
915e5146 3301
100382c7
HPN		 3302 case R_CRIS_16_DTPREL:
3303 case R_CRIS_32_DTPREL:
3304 /* These two just request for the constant-index
3305 module-local tls_index-sized GOT entry, which we add
3306 elsewhere. */
915e5146
HPN		 3307 break;
3308
75f500d7 3309 case R_CRIS_32_IE:
100382c7
HPN		 3310 case R_CRIS_32_GOT_TPREL:
3311 case R_CRIS_16_GOT_TPREL:
3312 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3313
75f500d7 3314 /* Those relocs also require that a DSO is of type
100382c7
HPN		 3315 Initial Exec. Like other targets, we don't reset this
3316 flag even if the relocs are GC:ed away. */
3317 if (info->shared)
3318 info->flags |= DF_STATIC_TLS;
3319 break;
3320
3321 /* Let's list the other assembler-generated TLS-relocs too,
3322 just to show that they're not forgotten. */
3323 case R_CRIS_16_TPREL:
3324 case R_CRIS_32_TPREL:
915e5146
HPN		 3325 default:
3326 break;
3327 }
3328
4d96d128 3329 switch (r_type)
06c15ad7 3330 {
915e5146
HPN		 3331 case R_CRIS_16_GOTPLT:
3332 case R_CRIS_32_GOTPLT:
3333 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3334 entry) is eliminated. We can only do this for a non-local
3335 symbol. */
3336 if (h != NULL)
3337 {
100382c7 3338 elf_cris_hash_entry (h)->gotplt_refcount++;
915e5146
HPN		 3339 goto handle_gotplt_reloc;
3340 }
3341 /* If h is NULL then this is a local symbol, and we must make a
3342 GOT entry for it, so handle it like a GOT reloc. */
3343 /* Fall through. */
3344
75f500d7 3345 case R_CRIS_32_IE:
100382c7
HPN		 3346 case R_CRIS_32_GD:
3347 case R_CRIS_16_GOT_GD:
3348 case R_CRIS_32_GOT_GD:
3349 case R_CRIS_32_GOT_TPREL:
3350 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3351 case R_CRIS_16_GOT:
3352 case R_CRIS_32_GOT:
3353 /* This symbol requires a global offset table entry. */
915e5146
HPN		 3354 if (h != NULL)
3355 {
51b64d56 3356 if (h->got.refcount == 0)
915e5146 3357 {
915e5146
HPN		 3358 /* Make sure this symbol is output as a dynamic symbol. */
3359 if (h->dynindx == -1)
3360 {
c152c796 3361 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3362 return FALSE;
915e5146 3363 }
915e5146 3364 }
100382c7
HPN		 3365
3366 /* Update the sum of reloc counts for this symbol. */
51b64d56 3367 h->got.refcount++;
100382c7
HPN		 3368
3369 switch (r_type)
3370 {
3371 case R_CRIS_16_GOT:
3372 case R_CRIS_32_GOT:
3373 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3374 {
3375 /* Allocate space in the .got section. */
3376 sgot->size += got_element_size;
3377 /* Allocate relocation space. */
3378 srelgot->size += sizeof (Elf32_External_Rela);
3379 }
3380 elf_cris_hash_entry (h)->reg_got_refcount++;
3381 break;
3382
3383 case R_CRIS_32_GD:
3384 case R_CRIS_16_GOT_GD:
3385 case R_CRIS_32_GOT_GD:
3386 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3387 {
3388 /* Allocate space in the .got section. */
3389 sgot->size += got_element_size;
3390 /* Allocate relocation space. */
3391 srelgot->size += sizeof (Elf32_External_Rela);
3392 }
3393 elf_cris_hash_entry (h)->dtp_refcount++;
3394 break;
3395
75f500d7 3396 case R_CRIS_32_IE:
100382c7
HPN		 3397 case R_CRIS_32_GOT_TPREL:
3398 case R_CRIS_16_GOT_TPREL:
3399 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3400 {
3401 /* Allocate space in the .got section. */
3402 sgot->size += got_element_size;
3403 /* Allocate relocation space. */
3404 srelgot->size += sizeof (Elf32_External_Rela);
3405 }
3406 elf_cris_hash_entry (h)->tprel_refcount++;
3407 break;
3408
3409 default:
3410 BFD_FAIL ();
3411 break;
3412 }
915e5146
HPN		 3413 }
3414 else
3415 {
3416 /* This is a global offset table entry for a local symbol. */
100382c7 3417 if (local_got_refcounts[r_symndx_lgot] == 0)
915e5146 3418 {
100382c7 3419 sgot->size += got_element_size;
915e5146
HPN		 3420 if (info->shared)
3421 {
100382c7
HPN		 3422 /* If we are generating a shared object, we need
3423 to output a R_CRIS_RELATIVE reloc so that the
3424 dynamic linker can adjust this GOT entry.
3425 Similarly for non-regular got entries. */
eea6121a 3426 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 3427 }
3428 }
100382c7
HPN		 3429 /* Update the reloc-specific count. */
3430 local_got_refcounts[r_symndx_lgot]++;
3431
3432 /* This one is the sum of all the others. */
51b64d56 3433 local_got_refcounts[r_symndx]++;
915e5146
HPN		 3434 }
3435 break;
3436
100382c7
HPN		 3437 case R_CRIS_16_DTPREL:
3438 case R_CRIS_32_DTPREL:
915e5146
HPN		 3439 case R_CRIS_32_GOTREL:
3440 /* This reference requires a global offset table.
3441 FIXME: The actual refcount isn't used currently; the .got
3442 section can't be removed if there were any references in the
3443 input. */
3444 local_got_refcounts[-1]++;
3445 break;
3446
3447 handle_gotplt_reloc:
3448
3449 case R_CRIS_32_PLT_GOTREL:
3450 /* This reference requires a global offset table. */
3451 local_got_refcounts[-1]++;
3452 /* Fall through. */
3453
3454 case R_CRIS_32_PLT_PCREL:
3455 /* This symbol requires a procedure linkage table entry. We
3456 actually build the entry in adjust_dynamic_symbol,
3457 because this might be a case of linking PIC code which is
3458 never referenced by a dynamic object, in which case we
3459 don't need to generate a procedure linkage table entry
3460 after all. */
3461
ada1953e
HPN		 3462 /* Beware: if we'd check for visibility of the symbol here
3463 (and not marking the need for a PLT when non-visible), we'd
3464 get into trouble with keeping handling consistent with
3465 regards to relocs found before definition and GOTPLT
3466 handling. Eliminable PLT entries will be dealt with later
3467 anyway. */
3468 if (h == NULL)
915e5146
HPN		 3469 continue;
3470
f5385ebf 3471 h->needs_plt = 1;
51b64d56 3472 h->plt.refcount++;
915e5146
HPN		 3473 break;
3474
3475 case R_CRIS_8:
3476 case R_CRIS_16:
3477 case R_CRIS_32:
3478 /* Let's help debug shared library creation. Any of these
0d08de41
HPN		 3479 relocs *can* be used in shared libs, but pages containing
3480 them cannot be shared, so they're not appropriate for
3481 common use. Don't warn for sections we don't care about,
3482 such as debug sections or non-constant sections. We
3483 can't help tables of (global) function pointers, for
3484 example, though they must be emitted in a (writable) data
3485 section to avoid having impure text sections. */
915e5146
HPN		 3486 if (info->shared
3487 && (sec->flags & SEC_ALLOC) != 0
3488 && (sec->flags & SEC_READONLY) != 0)
3489 {
3490 /* FIXME: How do we make this optionally a warning only? */
8f615d07 3491 (*_bfd_error_handler)
bac23f82
HPN		 3492 (_("%B, section %A:\n relocation %s should not"
3493 " be used in a shared object; recompile with -fPIC"),
d003868e
AM		 3494 abfd,
3495 sec,
8f615d07 3496 cris_elf_howto_table[r_type].name);
915e5146 3497 }
0d08de41
HPN		 3498 if (h != NULL)
3499 {
3500 h->non_got_ref = 1;
100382c7 3501
0d08de41
HPN		 3502 /* Make sure a plt entry is created for this symbol if it
3503 turns out to be a function defined by a dynamic object. */
3504 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3505 h->plt.refcount++;
3506 }
3507
3508 /* If we are creating a shared library and this is not a local
3509 symbol, we need to copy the reloc into the shared library.
3510 However when linking with -Bsymbolic and this is a global
3511 symbol which is defined in an object we are including in the
3512 link (i.e., DEF_REGULAR is set), then we can resolve the
3513 reloc directly. At this point we have not seen all the input
3514 files, so it is possible that DEF_REGULAR is not set now but
3515 will be set later (it is never cleared). In case of a weak
3516 definition, DEF_REGULAR may be cleared later by a strong
3517 definition in a shared library. We account for that
3518 possibility below by storing information in the relocs_copied
3519 field of the hash table entry. A similar situation occurs
3520 when creating shared libraries and symbol visibility changes
3521 render the symbol local. */
3522
3523 /* No need to do anything if we're not creating a shared object. */
3524 if (! info->shared)
3525 break;
3526
3527 /* We don't need to handle relocs into sections not going into
3528 the "real" output. */
3529 if ((sec->flags & SEC_ALLOC) == 0)
3530 break;
3531
3532 /* We may need to create a reloc section in the dynobj and made room
3533 for this reloc. */
3534 if (sreloc == NULL)
3535 {
3536 sreloc = _bfd_elf_make_dynamic_reloc_section
3537 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3538
3539 if (sreloc == NULL)
3540 return FALSE;
3541 }
3542
3543 if (sec->flags & SEC_READONLY)
3544 info->flags |= DF_TEXTREL;
3545
3546 sreloc->size += sizeof (Elf32_External_Rela);
3547 break;
915e5146
HPN		 3548
3549 case R_CRIS_8_PCREL:
3550 case R_CRIS_16_PCREL:
3551 case R_CRIS_32_PCREL:
3552 if (h != NULL)
3553 {
f5385ebf 3554 h->non_got_ref = 1;
915e5146
HPN		 3555
3556 /* Make sure a plt entry is created for this symbol if it
3557 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN		 3558 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3559 h->plt.refcount++;
915e5146
HPN		 3560 }
3561
3562 /* If we are creating a shared library and this is not a local
3563 symbol, we need to copy the reloc into the shared library.
3564 However when linking with -Bsymbolic and this is a global
3565 symbol which is defined in an object we are including in the
3566 link (i.e., DEF_REGULAR is set), then we can resolve the
3567 reloc directly. At this point we have not seen all the input
3568 files, so it is possible that DEF_REGULAR is not set now but
3569 will be set later (it is never cleared). In case of a weak
3570 definition, DEF_REGULAR may be cleared later by a strong
3571 definition in a shared library. We account for that
3572 possibility below by storing information in the relocs_copied
3573 field of the hash table entry. A similar situation occurs
3574 when creating shared libraries and symbol visibility changes
3575 render the symbol local. */
3576
3577 /* No need to do anything if we're not creating a shared object. */
3578 if (! info->shared)
3579 break;
3580
3581 /* We don't need to handle relocs into sections not going into
3582 the "real" output. */
3583 if ((sec->flags & SEC_ALLOC) == 0)
3584 break;
3585
0d08de41
HPN		 3586 /* If the symbol is local, then we know already we can
3587 eliminate the reloc. */
3588 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3589 break;
bac23f82 3590
0d08de41
HPN		 3591 /* If this is with -Bsymbolic and the symbol isn't weak, and
3592 is defined by an ordinary object (the ones we include in
3593 this shared library) then we can also eliminate the
3594 reloc. See comment above for more eliminable cases which
3595 we can't identify at this time. */
3596 if (info->symbolic
3597 && h->root.type != bfd_link_hash_defweak
3598 && h->def_regular)
3599 break;
915e5146 3600
83bac4b0
NC		 3601 /* We may need to create a reloc section in the dynobj and made room
3602 for this reloc. */
915e5146
HPN		 3603 if (sreloc == NULL)
3604 {
83bac4b0
NC		 3605 sreloc = _bfd_elf_make_dynamic_reloc_section
3606 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
915e5146 3607
83bac4b0 3608 if (sreloc == NULL)
b34976b6 3609 return FALSE;
915e5146
HPN		 3610 }
3611
eea6121a 3612 sreloc->size += sizeof (Elf32_External_Rela);
915e5146 3613
0d08de41
HPN		 3614 /* We count the number of PC relative relocations we have
3615 entered for this symbol, so that we can discard them
3616 again if the symbol is later defined by a regular object.
3617 We know that h is really a pointer to an
915e5146 3618 elf_cris_link_hash_entry. */
0d08de41
HPN		 3619 {
3620 struct elf_cris_link_hash_entry *eh;
3621 struct elf_cris_pcrel_relocs_copied *p;
915e5146 3622
0d08de41 3623 eh = elf_cris_hash_entry (h);
915e5146 3624
0d08de41
HPN		 3625 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3626 if (p->section == sreloc)
3627 break;
915e5146 3628
0d08de41
HPN		 3629 if (p == NULL)
3630 {
3631 p = ((struct elf_cris_pcrel_relocs_copied *)
3632 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3633 if (p == NULL)
3634 return FALSE;
3635 p->next = eh->pcrel_relocs_copied;
3636 eh->pcrel_relocs_copied = p;
3637 p->section = sreloc;
3638 p->count = 0;
3639 p->r_type = r_type;
3640 }
915e5146 3641
0d08de41
HPN		 3642 ++p->count;
3643 }
915e5146
HPN		 3644 break;
3645
06c15ad7
HPN		 3646 /* This relocation describes the C++ object vtable hierarchy.
3647 Reconstruct it for later use during GC. */
3648 case R_CRIS_GNU_VTINHERIT:
c152c796 3649 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3650 return FALSE;
06c15ad7 3651 break;
a7c10850 3652
06c15ad7
HPN		 3653 /* This relocation describes which C++ vtable entries are actually
3654 used. Record for later use during GC. */
3655 case R_CRIS_GNU_VTENTRY:
d17e0c6e
JB		 3656 BFD_ASSERT (h != NULL);
3657 if (h != NULL
3658 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3659 return FALSE;
06c15ad7 3660 break;
4d96d128 3661
100382c7
HPN		 3662 case R_CRIS_16_TPREL:
3663 case R_CRIS_32_TPREL:
3664 /* Already warned above, when necessary. */
3665 break;
3666
4d96d128
HPN		 3667 default:
3668 /* Other relocs do not appear here. */
3669 bfd_set_error (bfd_error_bad_value);
b34976b6 3670 return FALSE;
06c15ad7
HPN		 3671 }
3672 }
a7c10850 3673
b34976b6 3674 return TRUE;
06c15ad7 3675}
4da81684 3676
915e5146
HPN		 3677/* Set the sizes of the dynamic sections. */
3678
b34976b6 3679static bfd_boolean
915e5146 3680elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 3681 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN		 3682 struct bfd_link_info *info;
3683{
3684 bfd *dynobj;
3685 asection *s;
b34976b6
AM		 3686 bfd_boolean plt;
3687 bfd_boolean relocs;
915e5146
HPN		 3688
3689 dynobj = elf_hash_table (info)->dynobj;
3690 BFD_ASSERT (dynobj != NULL);
3691
3692 if (elf_hash_table (info)->dynamic_sections_created)
3693 {
3694 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3695 if (info->executable)
915e5146
HPN		 3696 {
3697 s = bfd_get_section_by_name (dynobj, ".interp");
3698 BFD_ASSERT (s != NULL);
eea6121a 3699 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN		 3700 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3701 }
3702 }
3703 else
3704 {
3705 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3706 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3707 elf_cris_adjust_gotplt_to_got,
3708 (PTR) info);
3709
3710 /* We may have created entries in the .rela.got section.
3711 However, if we are not creating the dynamic sections, we will
3712 not actually use these entries. Reset the size of .rela.got,
3713 which will cause it to get stripped from the output file
3714 below. */
3715 s = bfd_get_section_by_name (dynobj, ".rela.got");
3716 if (s != NULL)
eea6121a 3717 s->size = 0;
915e5146
HPN		 3718 }
3719
3720 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3721 relative relocs against symbols defined in a regular object. We
3722 allocated space for them in the check_relocs routine, but we will not
3723 fill them in in the relocate_section routine. We also discard space
3724 for relocs that have become for local symbols due to symbol
4d96d128
HPN		 3725 visibility changes. For programs, we discard space for relocs for
3726 symbols not referenced by any dynamic object. */
915e5146
HPN		 3727 if (info->shared)
3728 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN		 3729 elf_cris_discard_excess_dso_dynamics,
3730 (PTR) info);
3731 else
3732 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3733 elf_cris_discard_excess_program_dynamics,
915e5146
HPN		 3734 (PTR) info);
3735
3736 /* The check_relocs and adjust_dynamic_symbol entry points have
3737 determined the sizes of the various dynamic sections. Allocate
3738 memory for them. */
b34976b6
AM		 3739 plt = FALSE;
3740 relocs = FALSE;
915e5146
HPN		 3741 for (s = dynobj->sections; s != NULL; s = s->next)
3742 {
3743 const char *name;
915e5146
HPN		 3744
3745 if ((s->flags & SEC_LINKER_CREATED) == 0)
3746 continue;
3747
3748 /* It's OK to base decisions on the section name, because none
3749 of the dynobj section names depend upon the input files. */
3750 name = bfd_get_section_name (dynobj, s);
3751
915e5146
HPN		 3752 if (strcmp (name, ".plt") == 0)
3753 {
c456f082
AM		 3754 /* Remember whether there is a PLT. */
3755 plt = s->size != 0;
915e5146 3756 }
100382c7
HPN		 3757 else if (strcmp (name, ".got.plt") == 0)
3758 {
3759 /* The .got.plt contains the .got header as well as the
3760 actual .got.plt contents. The .got header may contain a
3761 R_CRIS_DTPMOD entry at index 3. */
3762 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3763 ? 8 : 0;
3764 }
0112cd26 3765 else if (CONST_STRNEQ (name, ".rela"))
915e5146 3766 {
100382c7
HPN		 3767 if (strcmp (name, ".rela.got") == 0
3768 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3769 && info->shared)
3770 s->size += sizeof (Elf32_External_Rela);
3771
c456f082 3772 if (s->size != 0)
915e5146 3773 {
915e5146
HPN		 3774 /* Remember whether there are any reloc sections other
3775 than .rela.plt. */
3776 if (strcmp (name, ".rela.plt") != 0)
b34976b6 3777 relocs = TRUE;
915e5146 3778
915e5146
HPN		 3779 /* We use the reloc_count field as a counter if we need
3780 to copy relocs into the output file. */
3781 s->reloc_count = 0;
3782 }
3783 }
0112cd26 3784 else if (! CONST_STRNEQ (name, ".got")
c456f082 3785 && strcmp (name, ".dynbss") != 0)
915e5146
HPN		 3786 {
3787 /* It's not one of our sections, so don't allocate space. */
3788 continue;
3789 }
3790
c456f082 3791 if (s->size == 0)
915e5146 3792 {
c456f082
AM		 3793 /* If we don't need this section, strip it from the
3794 output file. This is mostly to handle .rela.bss and
3795 .rela.plt. We must create both sections in
3796 create_dynamic_sections, because they must be created
3797 before the linker maps input sections to output
3798 sections. The linker does that before
3799 adjust_dynamic_symbol is called, and it is that
3800 function which decides whether anything needs to go
3801 into these sections. */
8423293d 3802 s->flags |= SEC_EXCLUDE;
915e5146
HPN		 3803 continue;
3804 }
3805
c456f082
AM		 3806 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3807 continue;
3808
915e5146
HPN		 3809 /* Allocate memory for the section contents. We use bfd_zalloc here
3810 in case unused entries are not reclaimed before the section's
3811 contents are written out. This should not happen, but this way
3812 if it does, we will not write out garbage. For reloc sections,
3813 this will make entries have the type R_CRIS_NONE. */
eea6121a 3814 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3815 if (s->contents == NULL)
b34976b6 3816 return FALSE;
915e5146
HPN		 3817 }
3818
3819 if (elf_hash_table (info)->dynamic_sections_created)
3820 {
3821 /* Add some entries to the .dynamic section. We fill in the
3822 values later, in elf_cris_finish_dynamic_sections, but we
3823 must add the entries now so that we get the correct size for
3824 the .dynamic section. The DT_DEBUG entry is filled in by the
3825 dynamic linker and used by the debugger. */
dc810e39 3826#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3827 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3828
915e5146
HPN		 3829 if (!info->shared)
3830 {
dc810e39 3831 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3832 return FALSE;
915e5146
HPN		 3833 }
3834
3835 if (plt)
3836 {
dc810e39
AM		 3837 if (!add_dynamic_entry (DT_PLTGOT, 0)
3838 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3839 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3840 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3841 return FALSE;
915e5146
HPN		 3842 }
3843
3844 if (relocs)
3845 {
dc810e39
AM		 3846 if (!add_dynamic_entry (DT_RELA, 0)
3847 || !add_dynamic_entry (DT_RELASZ, 0)
3848 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3849 return FALSE;
915e5146
HPN		 3850 }
3851
99e4ae17 3852 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3853 {
dc810e39 3854 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3855 return FALSE;
915e5146
HPN		 3856 info->flags |= DF_TEXTREL;
3857 }
3858 }
dc810e39 3859#undef add_dynamic_entry
915e5146 3860
b34976b6 3861 return TRUE;
915e5146
HPN		 3862}
3863
3864/* This function is called via elf_cris_link_hash_traverse if we are
3865 creating a shared object. In the -Bsymbolic case, it discards the
3866 space allocated to copy PC relative relocs against symbols which
3867 are defined in regular objects. For the normal non-symbolic case,
3868 we also discard space for relocs that have become local due to
3869 symbol visibility changes. We allocated space for them in the
3870 check_relocs routine, but we won't fill them in in the
3871 relocate_section routine. */
3872
b34976b6 3873static bfd_boolean
4d96d128 3874elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN		 3875 struct elf_cris_link_hash_entry *h;
3876 PTR inf;
3877{
3878 struct elf_cris_pcrel_relocs_copied *s;
3879 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3880
e92d460e
AM		 3881 if (h->root.root.type == bfd_link_hash_warning)
3882 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3883
915e5146
HPN		 3884 /* If a symbol has been forced local or we have found a regular
3885 definition for the symbolic link case, then we won't be needing
3886 any relocs. */
f5385ebf
AM		 3887 if (h->root.def_regular
3888 && (h->root.forced_local
915e5146
HPN		 3889 || info->symbolic))
3890 {
3891 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3892 s->section->size -= s->count * sizeof (Elf32_External_Rela);
0d08de41
HPN		 3893
3894 return TRUE;
3895 }
3896
3897 /* If we have accounted for PC-relative relocs for read-only
3898 sections, now is the time to warn for them. We can't do it in
3899 cris_elf_check_relocs, because we don't know the status of all
3900 symbols at that time (and it's common to force symbols local
3901 late). */
3902
3903 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3904 {
3905 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3906
3907 /* FIXME: How do we make this optionally a warning only? */
3908 (*_bfd_error_handler)
3909 (_("%B, section `%A', to symbol `%s':\n"
3910 " relocation %s should not be used"
3911 " in a shared object; recompile with -fPIC"),
3912 s->section->owner,
3913 s->section,
3914 h->root.root.root.string,
3915 cris_elf_howto_table[s->r_type].name);
3916
3917 info->flags |= DF_TEXTREL;
4d96d128
HPN		 3918 }
3919
b34976b6 3920 return TRUE;
4d96d128
HPN		 3921}
3922
3923/* This function is called via elf_cris_link_hash_traverse if we are *not*
3924 creating a shared object. We discard space for relocs for symbols put
3925 in the .got, but which we found we do not have to resolve at run-time. */
3926
b34976b6 3927static bfd_boolean
4d96d128
HPN		 3928elf_cris_discard_excess_program_dynamics (h, inf)
3929 struct elf_cris_link_hash_entry *h;
3930 PTR inf;
3931{
3932 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3933
e92d460e
AM		 3934 if (h->root.root.type == bfd_link_hash_warning)
3935 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3936
4d96d128
HPN		 3937 /* If we're not creating a shared library and have a symbol which is
3938 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN		 3939 (or rather, not defined by a DSO) then lose the reloc for the .got
3940 (don't allocate room for it). Likewise for relocs for something
3941 for which we create a PLT. */
f5385ebf 3942 if (!h->root.def_dynamic
e4a2175c 3943 || h->root.plt.refcount > 0)
4d96d128 3944 {
100382c7 3945 if (h->reg_got_refcount > 0
4d96d128
HPN		 3946 /* The size of this section is only valid and in sync with the
3947 various reference counts if we do dynamic; don't decrement it
3948 otherwise. */
3949 && elf_hash_table (info)->dynamic_sections_created)
3950 {
3951 bfd *dynobj = elf_hash_table (info)->dynobj;
3952 asection *srelgot;
3953
3954 BFD_ASSERT (dynobj != NULL);
99c79b2e 3955
4d96d128
HPN		 3956 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3957
3958 BFD_ASSERT (srelgot != NULL);
3959
eea6121a 3960 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN		 3961 }
3962
3963 /* If the locally-defined symbol isn't used by a DSO, then we don't
3964 have to export it as a dynamic symbol. This was already done for
3965 functions; doing this for all symbols would presumably not
e5dfef09
HPN		 3966 introduce new problems. Of course we don't do this if we're
3967 exporting all dynamic symbols. */
0741c7be 3968 if (! info->export_dynamic
77cfaee6 3969 && h->root.dynindx != -1
f5385ebf
AM		 3970 && !h->root.def_dynamic
3971 && !h->root.ref_dynamic)
e5dfef09
HPN		 3972 {
3973 h->root.dynindx = -1;
3974 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3975 h->root.dynstr_index);
3976 }
915e5146
HPN		 3977 }
3978
b34976b6 3979 return TRUE;
915e5146
HPN		 3980}
3981
3982/* Reject a file depending on presence and expectation of prefixed
3983 underscores on symbols. */
4da81684 3984
b34976b6 3985static bfd_boolean
4da81684
HPN		 3986cris_elf_object_p (abfd)
3987 bfd *abfd;
3988{
bac23f82
HPN		 3989 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3990 return FALSE;
3991
4da81684
HPN		 3992 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3993 return (bfd_get_symbol_leading_char (abfd) == '_');
3994 else
3995 return (bfd_get_symbol_leading_char (abfd) == 0);
3996}
3997
bac23f82
HPN		 3998/* Mark presence or absence of leading underscore. Set machine type
3999 flags from mach type. */
4da81684
HPN		 4000
4001static void
4002cris_elf_final_write_processing (abfd, linker)
4003 bfd *abfd;
b34976b6 4004 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 4005{
bac23f82
HPN		 4006 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4007
4008 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 4009 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN		 4010 e_flags |= EF_CRIS_UNDERSCORE;
4011
4012 switch (bfd_get_mach (abfd))
4013 {
4014 case bfd_mach_cris_v0_v10:
4015 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4016 break;
4017
4018 case bfd_mach_cris_v10_v32:
4019 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4020 break;
4021
4022 case bfd_mach_cris_v32:
4023 e_flags |= EF_CRIS_VARIANT_V32;
4024 break;
4025
4026 default:
4027 _bfd_abort (__FILE__, __LINE__,
4028 _("Unexpected machine number"));
4029 }
4030
4031 elf_elfheader (abfd)->e_flags = e_flags;
4032}
4033
4034/* Set the mach type from e_flags value. */
4035
4036static bfd_boolean
4037cris_elf_set_mach_from_flags (abfd, flags)
4038 bfd *abfd;
4039 unsigned long flags;
4040{
4041 switch (flags & EF_CRIS_VARIANT_MASK)
4042 {
4043 case EF_CRIS_VARIANT_ANY_V0_V10:
4044 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4045 break;
4046
4047 case EF_CRIS_VARIANT_V32:
4048 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4049 break;
4050
4051 case EF_CRIS_VARIANT_COMMON_V10_V32:
4052 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4053 break;
4054
4055 default:
4056 /* Since we don't recognize them, we obviously can't support them
4057 with this code; we'd have to require that all future handling
4058 would be optional. */
4059 bfd_set_error (bfd_error_wrong_format);
4060 return FALSE;
4061 }
4062
4063 return TRUE;
4da81684
HPN		 4064}
4065
4066/* Display the flags field. */
4067
b34976b6 4068static bfd_boolean
4da81684
HPN		 4069cris_elf_print_private_bfd_data (abfd, ptr)
4070 bfd *abfd;
4071 PTR ptr;
4072{
4073 FILE *file = (FILE *) ptr;
4074
f12123c0 4075 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN		 4076
4077 _bfd_elf_print_private_bfd_data (abfd, ptr);
4078
4079 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4080
4081 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4082 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN		 4083 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4084 == EF_CRIS_VARIANT_COMMON_V10_V32)
4085 fprintf (file, _(" [v10 and v32]"));
4086 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4087 == EF_CRIS_VARIANT_V32)
4088 fprintf (file, _(" [v32]"));
4da81684
HPN		 4089
4090 fputc ('\n', file);
b34976b6 4091 return TRUE;
4da81684
HPN		 4092}
4093
4094/* Don't mix files with and without a leading underscore. */
4095
b34976b6 4096static bfd_boolean
4da81684
HPN		 4097cris_elf_merge_private_bfd_data (ibfd, obfd)
4098 bfd *ibfd;
4099 bfd *obfd;
4100{
bac23f82 4101 int imach, omach;
4da81684 4102
82e51918 4103 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4104 return FALSE;
4da81684
HPN		 4105
4106 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4107 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4108 return TRUE;
4da81684 4109
bac23f82
HPN		 4110 imach = bfd_get_mach (ibfd);
4111
4da81684
HPN		 4112 if (! elf_flags_init (obfd))
4113 {
4114 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 4115 elf_flags_init (obfd) = TRUE;
4da81684 4116
bac23f82
HPN		 4117 /* We ignore the linker-set mach, and instead set it according to
4118 the first input file. This would also happen if we could
4119 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4120 This allows us to keep the same linker config across
4121 cris(v0..v10) and crisv32. The drawback is that we can't force
4122 the output type, which might be a sane thing to do for a
4123 v10+v32 compatibility object. */
4124 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4125 return FALSE;
4da81684
HPN		 4126 }
4127
bac23f82
HPN		 4128 if (bfd_get_symbol_leading_char (ibfd)
4129 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN		 4130 {
4131 (*_bfd_error_handler)
bac23f82 4132 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM		 4133 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4134 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4135 ibfd);
4da81684 4136 bfd_set_error (bfd_error_bad_value);
b34976b6 4137 return FALSE;
4da81684
HPN		 4138 }
4139
bac23f82
HPN		 4140 omach = bfd_get_mach (obfd);
4141
4142 if (imach != omach)
4143 {
4144 /* We can get an incompatible combination only if either is
4145 bfd_mach_cris_v32, and the other one isn't compatible. */
4146 if ((imach == bfd_mach_cris_v32
4147 && omach != bfd_mach_cris_v10_v32)
4148 || (omach == bfd_mach_cris_v32
4149 && imach != bfd_mach_cris_v10_v32))
4150 {
4151 (*_bfd_error_handler)
4152 ((imach == bfd_mach_cris_v32)
4153 ? _("%B contains CRIS v32 code, incompatible"
4154 " with previous objects")
4155 : _("%B contains non-CRIS-v32 code, incompatible"
4156 " with previous objects"),
4157 ibfd);
4158 bfd_set_error (bfd_error_bad_value);
4159 return FALSE;
4160 }
4161
4162 /* We don't have to check the case where the input is compatible
4163 with v10 and v32, because the output is already known to be set
4164 to the other (compatible) mach. */
4165 if (omach == bfd_mach_cris_v10_v32
4166 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4167 return FALSE;
4168 }
4169
b34976b6 4170 return TRUE;
4da81684 4171}
99e4ae17 4172
bac23f82
HPN		 4173/* Do side-effects of e_flags copying to obfd. */
4174
4175static bfd_boolean
4176cris_elf_copy_private_bfd_data (ibfd, obfd)
4177 bfd *ibfd;
4178 bfd *obfd;
4179{
4180 /* Call the base function. */
4181 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4182 return FALSE;
4183
4184 /* If output is big-endian for some obscure reason, stop here. */
4185 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4186 return FALSE;
4187
4188 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4189 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4190 return TRUE;
4191
4192 /* Do what we really came here for. */
4193 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4194}
99e4ae17
AJ		 4195
4196static enum elf_reloc_type_class
f51e552e
AM		 4197elf_cris_reloc_type_class (rela)
4198 const Elf_Internal_Rela *rela;
99e4ae17 4199{
100382c7
HPN		 4200 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4201 switch (r_type)
99e4ae17
AJ		 4202 {
4203 case R_CRIS_RELATIVE:
4204 return reloc_class_relative;
4205 case R_CRIS_JUMP_SLOT:
4206 return reloc_class_plt;
4207 case R_CRIS_COPY:
4208 return reloc_class_copy;
4209 default:
4210 return reloc_class_normal;
4211 }
4212}
100382c7
HPN		 4213
4214/* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4215 two GOT entries from three types with two different sizes. We handle
4216 it as a single entry, so we can use the regular offset-calculation
4217 machinery. */
4218
4219static bfd_vma
4220elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4221 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4222 struct elf_link_hash_entry *hr,
4223 bfd *ibfd,
4224 unsigned long symndx)
4225{
4226 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
100382c7
HPN		 4227 bfd_vma eltsiz = 0;
4228
4229 /* We may have one regular GOT entry or up to two TLS GOT
4230 entries. */
4231 if (h == NULL)
4232 {
b2e254f9 4233 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
100382c7
HPN		 4234 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4235
4236 BFD_ASSERT (local_got_refcounts != NULL);
4237
4238 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4239 {
4240 /* We can't have a variable referred to both as a regular
4241 variable and through TLS relocs. */
4242 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4243 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4244 return 4;
4245 }
4246
4247 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4248 eltsiz += 8;
4249
4250 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4251 eltsiz += 4;
4252 }
4253 else
4254 {
4255 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4256 if (hh->reg_got_refcount > 0)
4257 {
4258 /* The actual error-on-input is emitted elsewhere. */
4259 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4260 return 4;
4261 }
4262
4263 if (hh->dtp_refcount > 0)
4264 eltsiz += 8;
4265
4266 if (hh->tprel_refcount > 0)
4267 eltsiz += 4;
4268 }
4269
b2e254f9
HPN		 4270 /* We're only called when h->got.refcount is non-zero, so we must
4271 have a non-zero size. */
4272 BFD_ASSERT (eltsiz != 0);
100382c7
HPN		 4273 return eltsiz;
4274}
06c15ad7
HPN		 4275\f
4276#define ELF_ARCH bfd_arch_cris
4277#define ELF_MACHINE_CODE EM_CRIS
4278#define ELF_MAXPAGESIZE 0x2000
4279
4280#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4281#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 4282#define elf_symbol_leading_char 0
06c15ad7
HPN		 4283
4284#define elf_info_to_howto_rel NULL
4285#define elf_info_to_howto cris_info_to_howto_rela
4286#define elf_backend_relocate_section cris_elf_relocate_section
4287#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4288#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4289#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN		 4290#define elf_backend_grok_prstatus cris_elf_grok_prstatus
4291#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN		 4292
4293#define elf_backend_can_gc_sections 1
51b64d56 4294#define elf_backend_can_refcount 1
06c15ad7 4295
4da81684
HPN		 4296#define elf_backend_object_p cris_elf_object_p
4297#define elf_backend_final_write_processing \
4298 cris_elf_final_write_processing
4299#define bfd_elf32_bfd_print_private_bfd_data \
4300 cris_elf_print_private_bfd_data
4301#define bfd_elf32_bfd_merge_private_bfd_data \
4302 cris_elf_merge_private_bfd_data
bac23f82
HPN		 4303#define bfd_elf32_bfd_copy_private_bfd_data \
4304 cris_elf_copy_private_bfd_data
4da81684 4305
06c15ad7 4306#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
157090f7 4307#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
06c15ad7 4308
915e5146
HPN		 4309#define bfd_elf32_bfd_link_hash_table_create \
4310 elf_cris_link_hash_table_create
4311#define elf_backend_adjust_dynamic_symbol \
4312 elf_cris_adjust_dynamic_symbol
237bc7f0
HPN		 4313#define elf_backend_copy_indirect_symbol \
4314 elf_cris_copy_indirect_symbol
915e5146
HPN		 4315#define elf_backend_size_dynamic_sections \
4316 elf_cris_size_dynamic_sections
74541ad4 4317#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN		 4318#define elf_backend_finish_dynamic_symbol \
4319 elf_cris_finish_dynamic_symbol
4320#define elf_backend_finish_dynamic_sections \
4321 elf_cris_finish_dynamic_sections
4322#define elf_backend_create_dynamic_sections \
4323 _bfd_elf_create_dynamic_sections
4324#define bfd_elf32_bfd_final_link \
c152c796 4325 bfd_elf_gc_common_final_link
915e5146 4326#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 4327#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN		 4328
4329#define elf_backend_want_got_plt 1
4330#define elf_backend_plt_readonly 1
4331#define elf_backend_want_plt_sym 0
4332#define elf_backend_got_header_size 12
100382c7 4333#define elf_backend_got_elt_size elf_cris_got_elt_size
915e5146 4334
06c15ad7
HPN		 4335/* Later, we my want to optimize RELA entries into REL entries for dynamic
4336 linking and libraries (if it's a win of any significance). Until then,
4337 take the easy route. */
4338#define elf_backend_may_use_rel_p 0
4339#define elf_backend_may_use_rela_p 1
f0fe0e16 4340#define elf_backend_rela_normal 1
06c15ad7
HPN		 4341
4342#include "elf32-target.h"
4da81684 4343
4da81684
HPN		 4344#undef TARGET_LITTLE_SYM
4345#undef TARGET_LITTLE_NAME
4346#undef elf_symbol_leading_char
4347
4348#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4349#define TARGET_LITTLE_NAME "elf32-us-cris"
4350#define elf_symbol_leading_char '_'
16cecee5
L		 4351#undef elf32_bed
4352#define elf32_bed elf32_us_cris_bed
4da81684
HPN		 4353
4354#include "elf32-target.h"
GDB Binutils - Deliverables
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