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* elf32-cris.c (cris_elf_relocate_section) <case R_CRIS_32_GD>
[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;
b3bf42d8
HPN		 1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1537 relocation. */
1538 || (h != NULL
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
b34976b6 1541 skip = TRUE, relocate = TRUE;
915e5146
HPN		 1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1544
1545 if (skip)
0bb2d96a 1546 memset (&outrel, 0, sizeof outrel);
915e5146
HPN		 1547 /* h->dynindx may be -1 if the symbol was marked to
1548 become local. */
1549 else if (h != NULL
1550 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1551 || !h->def_regular))
915e5146
HPN		 1552 {
1553 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN		 1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1556 }
1557 else
1558 {
74541ad4
AM		 1559 outrel.r_addend = relocation + rel->r_addend;
1560
915e5146
HPN		 1561 if (r_type == R_CRIS_32)
1562 {
b34976b6 1563 relocate = TRUE;
915e5146 1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
915e5146
HPN		 1565 }
1566 else
1567 {
1568 long indx;
1569
8517fae7 1570 if (bfd_is_abs_section (sec))
915e5146
HPN		 1571 indx = 0;
1572 else if (sec == NULL || sec->owner == NULL)
1573 {
1574 bfd_set_error (bfd_error_bad_value);
b34976b6 1575 return FALSE;
915e5146
HPN		 1576 }
1577 else
1578 {
1579 asection *osec;
1580
74541ad4
AM		 1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
915e5146
HPN		 1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 1588 if (indx == 0)
1589 {
1590 struct elf_cris_link_hash_table *htab;
1591 htab = elf_cris_hash_table (info);
1592 osec = htab->root.text_index_section;
1593 indx = elf_section_data (osec)->dynindx;
1594 }
1595 BFD_ASSERT (indx != 0);
915e5146
HPN		 1596 }
1597
915e5146 1598 outrel.r_info = ELF32_R_INFO (indx, r_type);
915e5146
HPN		 1599 }
1600 }
1601
947216bf
AM		 1602 loc = sreloc->contents;
1603 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN		 1605
1606 /* This reloc will be computed at runtime, so there's no
1607 need to do anything now, except for R_CRIS_32 relocations
1608 that have been turned into R_CRIS_RELATIVE. */
1609 if (!relocate)
1610 continue;
1611 }
1612
1613 break;
100382c7
HPN		 1614
1615 case R_CRIS_16_DTPREL:
1616 case R_CRIS_32_DTPREL:
1617 /* This relocation must only be performed against local
1618 symbols. It's also ok when we link a program and the
1619 symbol is defined in an ordinary (non-DSO) object (if
1620 it's undefined there, we've already seen an error). */
1621 if (h != NULL
1622 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1623 && (info->shared
1624 || (!h->def_regular
1625 && h->root.type != bfd_link_hash_undefined)))
1626 {
1627 (*_bfd_error_handler)
1628 ((h->root.type == bfd_link_hash_undefined)
1629 /* We shouldn't get here for GCC-emitted code. */
1630 ? _("%B, section %A: relocation %s has an undefined"
1631 " reference to `%s', perhaps a declaration mixup?")
1632 : ("%B, section %A: relocation %s is"
1633 " not allowed for `%s', a global symbol with default"
1634 " visibility, perhaps a declaration mixup?"),
1635 input_bfd,
1636 input_section,
1637 cris_elf_howto_table[r_type].name,
1638 symname != NULL && symname[0] != '\0'
1639 ? symname : _("[whose name is lost]"));
1640 bfd_set_error (bfd_error_bad_value);
1641 return FALSE;
1642 }
1643
1644 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1645
1646 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1647 already done so. Note that we do this in .got.plt, not
1648 in .got, as .got.plt contains the first part, still the
1649 reloc is against .got, because the linker script directs
1650 (is required to direct) them both into .got. */
1651 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1652 {
1653 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1654 BFD_ASSERT (sgotplt != NULL);
1655
1656 if (info->shared)
1657 {
1658 Elf_Internal_Rela outrel;
1659 bfd_byte *loc;
1660
1661 if (srelgot == NULL)
1662 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1663 BFD_ASSERT (srelgot != NULL);
1664 loc = srelgot->contents;
1665 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1666
1667 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1668 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1669 outrel.r_offset = (sgotplt->output_section->vma
1670 + sgotplt->output_offset
1671 + 12);
1672 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1673 outrel.r_addend = 0;
1674 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1675 }
1676 else
1677 {
1678 /* For an executable, the GOT entry contents is known. */
1679 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1680 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1681 }
1682
1683 /* Reverse the sign to mark that we've emitted the
1684 required GOT entry. */
1685 elf_cris_hash_table (info)->dtpmod_refcount
1686 = -elf_cris_hash_table (info)->dtpmod_refcount;
1687 }
1688
1689 /* The thread-based offset to the local symbol is the
f551b6f0
HPN		 1690 relocation.
1691 For the executable, TLS data begins at the thread pointer plus
1692 the negative size of the TLS data. For a DSO, that's part of
1693 the module TLS offset. */
100382c7 1694 relocation -= elf_hash_table (info)->tls_sec == NULL
f551b6f0
HPN		 1695 ? 0 : (elf_hash_table (info)->tls_sec->vma
1696 + (info->shared
f6f05983 1697 ? 0 : elf_hash_table (info)->tls_size));
100382c7
HPN		 1698 break;
1699
1700 case R_CRIS_32_GD:
1701 if (info->shared)
1702 {
1703 bfd_set_error (bfd_error_invalid_operation);
1704
1705 /* We've already informed in cris_elf_check_relocs that
1706 this is an error. */
1707 return FALSE;
1708 }
1709 /* Fall through. */
1710
1711 case R_CRIS_16_GOT_GD:
1712 case R_CRIS_32_GOT_GD:
1713 if (rel->r_addend != 0)
1714 {
1715 /* We can't do anything for a relocation which is against a
1716 symbol *plus offset*. The GOT holds relocations for
1717 symbols. Make this an error; the compiler isn't allowed
1718 to pass us these kinds of things. */
1719 (*_bfd_error_handler)
1720 (_("%B, section %A: relocation %s with non-zero addend %d"
1721 " against symbol `%s'"),
1722 input_bfd,
1723 input_section,
1724 cris_elf_howto_table[r_type].name,
1725 rel->r_addend,
1726 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1727
1728 bfd_set_error (bfd_error_bad_value);
1729 return FALSE;
1730 }
1731
1732 if (!info->shared && (h == NULL || h->def_regular))
1733 {
1734 /* Known contents of the GOT. */
1735 bfd_vma off;
1736
1737 /* The symbol is defined in the program, so just write
019c5a2e 1738 (1, known_tpoffset) into the GOT. */
100382c7
HPN		 1739 relocation -= elf_hash_table (info)->tls_sec->vma;
1740
1741 if (h != NULL)
1742 {
1743 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1744 ? h->got.offset + 4 : h->got.offset;
1745 }
1746 else
1747 {
1748 off = local_got_offsets[r_symndx];
1749 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1750 off += 4;
1751 }
1752
1753 /* We use bit 1 of the offset as a flag for GOT entry with
1754 the R_CRIS_DTP reloc, setting it when we've emitted the
1755 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1756 relocs. */
1757 if ((off & 2) == 0)
1758 {
1759 off &= ~3;
1760
1761 if (h != NULL)
1762 h->got.offset |= 2;
1763 else
1764 local_got_offsets[r_symndx] |= 2;
1765
1766 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1767 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1768 }
1769 else
1770 off &= ~3;
1771
1772 relocation = sgot->output_offset + off
1773 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1774 }
1775 else
1776 {
1777 /* Not all parts of the GOT entry are known; emit a real
1778 relocation. */
1779 bfd_vma off;
1780
1781 if (h != NULL)
1782 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1783 ? h->got.offset + 4 : h->got.offset;
1784 else
1785 {
1786 off = local_got_offsets[r_symndx];
1787 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1788 off += 4;
1789 }
1790
1791 /* See above re bit 1 and bit 0 usage. */
1792 if ((off & 2) == 0)
1793 {
1794 Elf_Internal_Rela outrel;
1795 bfd_byte *loc;
1796
1797 off &= ~3;
1798
1799 if (h != NULL)
1800 h->got.offset |= 2;
1801 else
1802 local_got_offsets[r_symndx] |= 2;
1803
1804 /* Clear the target contents of the GOT (just as a
1805 gesture; it's already cleared on allocation): this
1806 relocation is not like the other dynrelocs. */
1807 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1808 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1809
1810 if (srelgot == NULL)
1811 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1812 BFD_ASSERT (srelgot != NULL);
1813
1814 if (h != NULL && h->dynindx != -1)
1815 {
1816 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1817 relocation = 0;
1818 }
1819 else
1820 {
1821 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1822
1823 /* NULL if we had an error. */
1824 relocation -= elf_hash_table (info)->tls_sec == NULL
1825 ? 0 : elf_hash_table (info)->tls_sec->vma;
1826 }
1827
1828 outrel.r_offset = (sgot->output_section->vma
1829 + sgot->output_offset
1830 + off);
1831 outrel.r_addend = relocation;
1832 loc = srelgot->contents;
1833 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1834
1835 /* NULL if we had an error. */
1836 if (srelgot->contents != NULL)
1837 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1838 }
1839 else
1840 off &= ~3;
1841
1842 relocation = sgot->output_offset + off
1843 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1844 }
1845
1846 /* The GOT-relative offset to the GOT entry is the
1847 relocation, or for R_CRIS_32_GD, the actual address of
1848 the GOT entry. */
1849 break;
1850
75f500d7
HPN		 1851 case R_CRIS_32_IE:
1852 if (info->shared)
1853 {
1854 bfd_set_error (bfd_error_invalid_operation);
1855
1856 /* We've already informed in cris_elf_check_relocs that
1857 this is an error. */
1858 return FALSE;
1859 }
1860 /* Fall through. */
1861
100382c7
HPN		 1862 case R_CRIS_32_GOT_TPREL:
1863 case R_CRIS_16_GOT_TPREL:
1864 if (rel->r_addend != 0)
1865 {
1866 /* We can't do anything for a relocation which is
1867 against a symbol *plus offset*. GOT holds
1868 relocations for symbols. Make this an error; the
1869 compiler isn't allowed to pass us these kinds of
1870 things. */
1871 (*_bfd_error_handler)
1872 (_("%B, section %A: relocation %s with non-zero addend %d"
1873 " against symbol `%s'"),
1874 input_bfd,
1875 input_section,
1876 cris_elf_howto_table[r_type].name,
1877 rel->r_addend,
1878 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1879 bfd_set_error (bfd_error_bad_value);
1880 return FALSE;
1881 }
1882
1883 if (!info->shared && (h == NULL || h->def_regular))
1884 {
1885 /* Known contents of the GOT. */
1886 bfd_vma off;
1887
1888 /* The symbol is defined in the program, so just write
1bc86aea 1889 the -prog_tls_size+known_tpoffset into the GOT. */
100382c7 1890 relocation -= elf_hash_table (info)->tls_sec->vma;
f6f05983 1891 relocation -= elf_hash_table (info)->tls_size;
100382c7
HPN		 1892
1893 if (h != NULL)
1894 off = h->got.offset;
1895 else
1896 off = local_got_offsets[r_symndx];
1897
1898 /* Bit 0 is used to mark whether we've emitted the required
1899 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1900 is used similarly for R_CRIS_DTP, see above. */
1901 if ((off & 1) == 0)
1902 {
1903 off &= ~3;
1904
1905 if (h != NULL)
1906 h->got.offset |= 1;
1907 else
1908 local_got_offsets[r_symndx] |= 1;
1909
1910 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1911 }
1912 else
1913 off &= ~3;
1914
75f500d7
HPN		 1915 relocation = sgot->output_offset + off
1916 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1917 }
1918 else
1919 {
1920 /* Emit a real relocation. */
1921 bfd_vma off;
1922
1923 if (h != NULL)
1924 off = h->got.offset;
1925 else
1926 off = local_got_offsets[r_symndx];
1927
1928 /* See above re usage of bit 0 and 1. */
1929 if ((off & 1) == 0)
1930 {
1931 Elf_Internal_Rela outrel;
1932 bfd_byte *loc;
1933
1934 off &= ~3;
1935
1936 if (h != NULL)
1937 h->got.offset |= 1;
1938 else
1939 local_got_offsets[r_symndx] |= 1;
1940
1941 if (srelgot == NULL)
1942 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1943 BFD_ASSERT (srelgot != NULL);
1944
1945 if (h != NULL && h->dynindx != -1)
1946 {
1947 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1948 relocation = 0;
1949 }
1950 else
1951 {
1952 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1953
1954 /* NULL if we had an error. */
1955 relocation -= elf_hash_table (info)->tls_sec == NULL
1956 ? 0 : elf_hash_table (info)->tls_sec->vma;
1957 }
1958
1959 /* Just "define" the initial contents in some
1960 semi-logical way. */
1961 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1962
1963 outrel.r_offset = (sgot->output_section->vma
1964 + sgot->output_offset
1965 + off);
1966 outrel.r_addend = relocation;
1967 loc = srelgot->contents;
1968 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1969 /* NULL if we had an error. */
1970 if (srelgot->contents != NULL)
1971 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1972 }
1973 else
1974 off &= ~3;
1975
75f500d7
HPN		 1976 relocation = sgot->output_offset + off
1977 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN		 1978 }
1979
75f500d7
HPN		 1980 /* The GOT-relative offset to the GOT entry is the relocation,
1981 or for R_CRIS_32_GD, the actual address of the GOT entry. */
100382c7
HPN		 1982 break;
1983
1984 case R_CRIS_16_TPREL:
1985 case R_CRIS_32_TPREL:
1986 /* This relocation must only be performed against symbols
1987 defined in an ordinary (non-DSO) object. */
1988 if (info->shared)
1989 {
1990 bfd_set_error (bfd_error_invalid_operation);
1991
1992 /* We've already informed in cris_elf_check_relocs that
1993 this is an error. */
1994 return FALSE;
1995 }
1996
1997 if (h != NULL
1998 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1999 && !h->def_regular
2000 /* If it's undefined, then an error message has already
2001 been emitted. */
2002 && h->root.type != bfd_link_hash_undefined)
2003 {
2004 (*_bfd_error_handler)
2005 (_("%B, section %A: relocation %s is"
2006 " not allowed for symbol: `%s'"
2007 " which is defined outside the program,"
2008 " perhaps a declaration mixup?"),
2009 input_bfd,
2010 input_section,
2011 cris_elf_howto_table[r_type].name,
2012 symname);
2013 bfd_set_error (bfd_error_bad_value);
2014 return FALSE;
2015 }
2016
2017 /* NULL if we had an error. */
2018 relocation -= elf_hash_table (info)->tls_sec == NULL
1bc86aea
HPN		 2019 ? 0
2020 : (elf_hash_table (info)->tls_sec->vma
f6f05983 2021 + elf_hash_table (info)->tls_size);
100382c7
HPN		 2022
2023 /* The TLS-relative offset is the relocation. */
2024 break;
2025
2026 default:
2027 BFD_FAIL ();
2028 return FALSE;
915e5146
HPN		 2029 }
2030
2031 r = cris_final_link_relocate (howto, input_bfd, input_section,
2032 contents, rel, relocation);
2033
2034 if (r != bfd_reloc_ok)
2035 {
2036 const char * msg = (const char *) NULL;
2037
2038 switch (r)
2039 {
2040 case bfd_reloc_overflow:
2041 r = info->callbacks->reloc_overflow
dfeffb9f
L		 2042 (info, (h ? &h->root : NULL), symname, howto->name,
2043 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
100382c7
HPN		 2044 if (additional_relocation_error_msg_count > 0)
2045 {
2046 additional_relocation_error_msg_count--;
2047 switch (r_type)
2048 {
2049 case R_CRIS_16_GOTPLT:
2050 case R_CRIS_16_GOT:
2051
2052 /* Not just TLS is involved here, so we make
2053 generation and message depend on -fPIC/-fpic
2054 only. */
2055 case R_CRIS_16_GOT_TPREL:
2056 case R_CRIS_16_GOT_GD:
2057 (*_bfd_error_handler)
2058 (_("(too many global variables for -fpic:"
2059 " recompile with -fPIC)"));
2060 break;
2061
2062 case R_CRIS_16_TPREL:
2063 case R_CRIS_16_DTPREL:
2064 (*_bfd_error_handler)
2065 (_("(thread-local data too big for -fpic or"
2066 " -msmall-tls: recompile with -fPIC or"
2067 " -mno-small-tls)"));
2068 break;
2069
2070 /* No known cause for overflow for other relocs. */
2071 default:
2072 break;
2073 }
2074 }
915e5146
HPN		 2075 break;
2076
2077 case bfd_reloc_undefined:
2078 r = info->callbacks->undefined_symbol
dc810e39 2079 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 2080 TRUE);
915e5146
HPN		 2081 break;
2082
2083 case bfd_reloc_outofrange:
2084 msg = _("internal error: out of range error");
2085 break;
2086
2087 case bfd_reloc_notsupported:
2088 msg = _("internal error: unsupported relocation error");
2089 break;
2090
2091 case bfd_reloc_dangerous:
2092 msg = _("internal error: dangerous relocation");
2093 break;
2094
2095 default:
2096 msg = _("internal error: unknown error");
2097 break;
2098 }
2099
2100 if (msg)
2101 r = info->callbacks->warning
dc810e39 2102 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN		 2103
2104 if (! r)
b34976b6 2105 return FALSE;
915e5146
HPN		 2106 }
2107 }
2108
b34976b6 2109 return TRUE;
915e5146
HPN		 2110}
2111\f
2112/* Finish up dynamic symbol handling. We set the contents of various
2113 dynamic sections here. */
2114
b34976b6 2115static bfd_boolean
915e5146
HPN		 2116elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2117 bfd *output_bfd;
2118 struct bfd_link_info *info;
2119 struct elf_link_hash_entry *h;
2120 Elf_Internal_Sym *sym;
2121{
2122 bfd *dynobj;
bac23f82
HPN		 2123
2124 /* Where in the plt entry to put values. */
915e5146
HPN		 2125 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2126
bac23f82
HPN		 2127 /* What offset to add to the distance to the first PLT entry for the
2128 value at plt_off3. */
2129 int plt_off3_value_bias = 4;
2130
2131 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2132 for PIC and non-PIC for v32 and pre-v32). */
2133 int plt_stub_offset = 8;
2134 int plt_entry_size = PLT_ENTRY_SIZE;
2135 const bfd_byte *plt_entry = elf_cris_plt_entry;
2136 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2137
2138 /* Adjust the various PLT entry offsets. */
2139 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2140 {
2141 plt_off2 = 14;
2142 plt_off3 = 20;
2143 plt_off3_value_bias = -2;
2144 plt_stub_offset = 12;
2145 plt_entry_size = PLT_ENTRY_SIZE_V32;
2146 plt_entry = elf_cris_plt_entry_v32;
2147 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2148 }
2149
915e5146
HPN		 2150 dynobj = elf_hash_table (info)->dynobj;
2151
2152 if (h->plt.offset != (bfd_vma) -1)
2153 {
2154 asection *splt;
2155 asection *sgotplt;
2156 asection *sgot;
2157 asection *srela;
2158 bfd_vma got_base;
2159
2160 bfd_vma gotplt_offset
100382c7 2161 = elf_cris_hash_entry (h)->gotplt_offset;
915e5146 2162 Elf_Internal_Rela rela;
947216bf 2163 bfd_byte *loc;
b34976b6 2164 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146 2165
0bdf8d40
HPN		 2166 /* Get the index in the .rela.plt relocations for the .got.plt
2167 entry that corresponds to this symbol.
2168 We have to count backwards here, and the result is only valid
2169 as an index into .rela.plt. We also have to undo the effect
2170 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2171 .got.plt) for which gotplt_offset is adjusted, because while
2172 that entry goes into .got.plt, its relocation goes into
2173 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2174 processed as part of the runtime lazy .rela.plt relocation).
2175 FIXME: There be literal constants here... */
2176 bfd_vma rela_plt_index
2177 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2178 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
915e5146
HPN		 2179
2180 /* Get the offset into the .got table of the entry that corresponds
2181 to this function. Note that we embed knowledge that "incoming"
2182 .got goes after .got.plt in the output without padding (pointer
2183 aligned). However, that knowledge is present in several other
c152c796 2184 places too. */
915e5146
HPN		 2185 bfd_vma got_offset
2186 = (has_gotplt
2187 ? gotplt_offset
2188 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2189
2190 /* This symbol has an entry in the procedure linkage table. Set it
2191 up. */
2192
2193 BFD_ASSERT (h->dynindx != -1);
2194
2195 splt = bfd_get_section_by_name (dynobj, ".plt");
2196 sgot = bfd_get_section_by_name (dynobj, ".got");
2197 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2198 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2199 BFD_ASSERT (splt != NULL && sgotplt != NULL
2200 && (! has_gotplt || srela != NULL));
2201
2202 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2203
2204 /* Fill in the entry in the procedure linkage table. */
2205 if (! info->shared)
2206 {
bac23f82
HPN		 2207 memcpy (splt->contents + h->plt.offset, plt_entry,
2208 plt_entry_size);
915e5146
HPN		 2209
2210 /* We need to enter the absolute address of the GOT entry here. */
2211 bfd_put_32 (output_bfd, got_base + got_offset,
2212 splt->contents + h->plt.offset + plt_off1);
2213 }
2214 else
2215 {
bac23f82
HPN		 2216 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2217 plt_entry_size);
915e5146
HPN		 2218 bfd_put_32 (output_bfd, got_offset,
2219 splt->contents + h->plt.offset + plt_off1);
2220 }
2221
2222 /* Fill in the plt entry and make a relocation, if this is a "real"
2223 PLT entry. */
2224 if (has_gotplt)
2225 {
bac23f82 2226 /* Fill in the offset to the reloc table. */
915e5146 2227 bfd_put_32 (output_bfd,
0bdf8d40 2228 rela_plt_index * sizeof (Elf32_External_Rela),
915e5146
HPN		 2229 splt->contents + h->plt.offset + plt_off2);
2230
2231 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN		 2232 bfd_put_32 (output_bfd,
2233 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN		 2234 splt->contents + h->plt.offset + plt_off3);
2235
2236 /* Fill in the entry in the global offset table with the address of
2237 the relocating stub. */
2238 bfd_put_32 (output_bfd,
2239 (splt->output_section->vma
2240 + splt->output_offset
2241 + h->plt.offset
bac23f82 2242 + plt_stub_offset),
915e5146
HPN		 2243 sgotplt->contents + got_offset);
2244
2245 /* Fill in the entry in the .rela.plt section. */
2246 rela.r_offset = (sgotplt->output_section->vma
2247 + sgotplt->output_offset
2248 + got_offset);
2249 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2250 rela.r_addend = 0;
0bdf8d40 2251 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
947216bf 2252 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2253 }
2254
f5385ebf 2255 if (!h->def_regular)
915e5146
HPN		 2256 {
2257 /* Mark the symbol as undefined, rather than as defined in
2258 the .plt section. Leave the value alone. */
2259 sym->st_shndx = SHN_UNDEF;
2260
2261 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2262 know whether resetting the value is significant; if it really
2263 is, rather than a quirk or bug in the sparc port, then I
2264 believe we'd see this elsewhere. */
2265 /* If the symbol is weak, we do need to clear the value.
2266 Otherwise, the PLT entry would provide a definition for
2267 the symbol even if the symbol wasn't defined anywhere,
2268 and so the symbol would never be NULL. */
f5385ebf 2269 if (!h->ref_regular_nonweak)
915e5146
HPN		 2270 sym->st_value = 0;
2271 }
2272 }
2273
e4a2175c
HPN		 2274 /* For an ordinary program, we emit .got relocs only for symbols that
2275 are in the dynamic-symbols table and are either defined by the
2276 program or are undefined weak symbols, or are function symbols
2277 where we do not output a PLT: the PLT reloc was output above and all
2278 references to the function symbol are redirected to the PLT. */
4d96d128 2279 if (h->got.offset != (bfd_vma) -1
100382c7 2280 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
6849c52f
HPN		 2281 && (info->shared
2282 || (h->dynindx != -1
e4a2175c 2283 && h->plt.offset == (bfd_vma) -1
f5385ebf 2284 && !h->def_regular
6849c52f 2285 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN		 2286 {
2287 asection *sgot;
2288 asection *srela;
2289 Elf_Internal_Rela rela;
947216bf 2290 bfd_byte *loc;
dc810e39 2291 bfd_byte *where;
915e5146
HPN		 2292
2293 /* This symbol has an entry in the global offset table. Set it up. */
2294
2295 sgot = bfd_get_section_by_name (dynobj, ".got");
2296 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2297 BFD_ASSERT (sgot != NULL && srela != NULL);
2298
2299 rela.r_offset = (sgot->output_section->vma
2300 + sgot->output_offset
dc810e39 2301 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN		 2302
2303 /* If this is a static link, or it is a -Bsymbolic link and the
2304 symbol is defined locally or was forced to be local because
2305 of a version file, we just want to emit a RELATIVE reloc.
2306 The entry in the global offset table will already have been
2307 initialized in the relocate_section function. */
dc810e39 2308 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN		 2309 if (! elf_hash_table (info)->dynamic_sections_created
2310 || (info->shared
2311 && (info->symbolic || h->dynindx == -1)
f5385ebf 2312 && h->def_regular))
915e5146
HPN		 2313 {
2314 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 2315 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN		 2316 }
2317 else
2318 {
dc810e39 2319 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN		 2320 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2321 rela.r_addend = 0;
2322 }
2323
947216bf
AM		 2324 loc = srela->contents;
2325 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2326 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2327 }
2328
f5385ebf 2329 if (h->needs_copy)
915e5146
HPN		 2330 {
2331 asection *s;
2332 Elf_Internal_Rela rela;
947216bf 2333 bfd_byte *loc;
915e5146
HPN		 2334
2335 /* This symbol needs a copy reloc. Set it up. */
2336
2337 BFD_ASSERT (h->dynindx != -1
2338 && (h->root.type == bfd_link_hash_defined
2339 || h->root.type == bfd_link_hash_defweak));
2340
2341 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2342 ".rela.bss");
2343 BFD_ASSERT (s != NULL);
2344
2345 rela.r_offset = (h->root.u.def.value
2346 + h->root.u.def.section->output_section->vma
2347 + h->root.u.def.section->output_offset);
2348 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2349 rela.r_addend = 0;
947216bf
AM		 2350 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2351 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN		 2352 }
2353
2354 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2355 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 2356 || h == elf_hash_table (info)->hgot)
915e5146
HPN		 2357 sym->st_shndx = SHN_ABS;
2358
b34976b6 2359 return TRUE;
915e5146
HPN		 2360}
2361\f
100382c7
HPN		 2362/* Finish up the dynamic sections. Do *not* emit relocs here, as their
2363 offsets were changed, as part of -z combreloc handling, from those we
2364 computed. */
915e5146 2365
b34976b6 2366static bfd_boolean
915e5146
HPN		 2367elf_cris_finish_dynamic_sections (output_bfd, info)
2368 bfd *output_bfd;
2369 struct bfd_link_info *info;
2370{
2371 bfd *dynobj;
2372 asection *sgot;
2373 asection *sdyn;
2374
2375 dynobj = elf_hash_table (info)->dynobj;
2376
2377 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2378 BFD_ASSERT (sgot != NULL);
2379 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2380
2381 if (elf_hash_table (info)->dynamic_sections_created)
2382 {
2383 asection *splt;
2384 Elf32_External_Dyn *dyncon, *dynconend;
2385
2386 splt = bfd_get_section_by_name (dynobj, ".plt");
2387 BFD_ASSERT (splt != NULL && sdyn != NULL);
2388
2389 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 2390 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN		 2391 for (; dyncon < dynconend; dyncon++)
2392 {
2393 Elf_Internal_Dyn dyn;
2394 asection *s;
2395
2396 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2397
2398 switch (dyn.d_tag)
2399 {
2400 default:
2401 break;
2402
2403 case DT_PLTGOT:
2404 s = bfd_get_section_by_name (output_bfd, ".got");
2405 BFD_ASSERT (s != NULL);
2406 dyn.d_un.d_ptr = s->vma;
2407 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2408 break;
2409
2410 case DT_JMPREL:
2411 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2412 if all symbols are found in the .got (not .got.plt). */
2413 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2414 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2416 break;
2417
2418 case DT_PLTRELSZ:
2419 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2420 if (s == NULL)
2421 dyn.d_un.d_val = 0;
915e5146 2422 else
eea6121a 2423 dyn.d_un.d_val = s->size;
915e5146
HPN		 2424 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2425 break;
2426
2427 case DT_RELASZ:
2428 /* The procedure linkage table relocs (DT_JMPREL) should
2429 not be included in the overall relocs (DT_RELA).
2430 Therefore, we override the DT_RELASZ entry here to
2431 make it not include the JMPREL relocs. Since the
2432 linker script arranges for .rela.plt to follow all
2433 other relocation sections, we don't have to worry
2434 about changing the DT_RELA entry. */
2435 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2436 if (s != NULL)
eea6121a 2437 dyn.d_un.d_val -= s->size;
915e5146
HPN		 2438 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2439 break;
2440 }
2441 }
2442
2443 /* Fill in the first entry in the procedure linkage table. */
eea6121a 2444 if (splt->size > 0)
915e5146 2445 {
bac23f82
HPN		 2446 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2447 {
2448 if (info->shared)
2449 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2450 PLT_ENTRY_SIZE_V32);
2451 else
2452 {
2453 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2454 PLT_ENTRY_SIZE_V32);
2455 bfd_put_32 (output_bfd,
2456 sgot->output_section->vma
2457 + sgot->output_offset + 4,
2458 splt->contents + 4);
2459
2460 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2461 = PLT_ENTRY_SIZE_V32;
2462 }
2463 }
915e5146 2464 else
bac23f82
HPN		 2465 {
2466 if (info->shared)
2467 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2468 PLT_ENTRY_SIZE);
2469 else
2470 {
2471 memcpy (splt->contents, elf_cris_plt0_entry,
2472 PLT_ENTRY_SIZE);
2473 bfd_put_32 (output_bfd,
2474 sgot->output_section->vma
2475 + sgot->output_offset + 4,
2476 splt->contents + 6);
2477 bfd_put_32 (output_bfd,
2478 sgot->output_section->vma
2479 + sgot->output_offset + 8,
2480 splt->contents + 14);
2481
2482 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2483 = PLT_ENTRY_SIZE;
2484 }
915e5146
HPN		 2485 }
2486 }
2487 }
2488
2489 /* Fill in the first three entries in the global offset table. */
eea6121a 2490 if (sgot->size > 0)
915e5146
HPN		 2491 {
2492 if (sdyn == NULL)
2493 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2494 else
2495 bfd_put_32 (output_bfd,
2496 sdyn->output_section->vma + sdyn->output_offset,
2497 sgot->contents);
2498 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2499 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2500 }
2501
2502 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2503
b34976b6 2504 return TRUE;
06c15ad7
HPN		 2505}
2506\f
2507/* Return the section that should be marked against GC for a given
2508 relocation. */
2509
2510static asection *
07adf181
AM		 2511cris_elf_gc_mark_hook (asection *sec,
2512 struct bfd_link_info *info,
2513 Elf_Internal_Rela *rel,
2514 struct elf_link_hash_entry *h,
2515 Elf_Internal_Sym *sym)
06c15ad7 2516{
100382c7 2517 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
06c15ad7 2518 if (h != NULL)
100382c7 2519 switch (r_type)
07adf181
AM		 2520 {
2521 case R_CRIS_GNU_VTINHERIT:
2522 case R_CRIS_GNU_VTENTRY:
2523 return NULL;
100382c7
HPN		 2524
2525 default:
2526 break;
07adf181 2527 }
06c15ad7 2528
07adf181 2529 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN		 2530}
2531
2532/* Update the got entry reference counts for the section being removed. */
2533
b34976b6 2534static bfd_boolean
07adf181
AM		 2535cris_elf_gc_sweep_hook (bfd *abfd,
2536 struct bfd_link_info *info,
2537 asection *sec,
2538 const Elf_Internal_Rela *relocs)
06c15ad7 2539{
915e5146
HPN		 2540 Elf_Internal_Shdr *symtab_hdr;
2541 struct elf_link_hash_entry **sym_hashes;
2542 bfd_signed_vma *local_got_refcounts;
2543 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN		 2544 bfd *dynobj;
2545 asection *sgot;
2546 asection *srelgot;
2547
7dda2462
TG		 2548 if (info->relocatable)
2549 return TRUE;
2550
915e5146
HPN		 2551 dynobj = elf_hash_table (info)->dynobj;
2552 if (dynobj == NULL)
b34976b6 2553 return TRUE;
915e5146 2554
babfd660
KH		 2555 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2556 sym_hashes = elf_sym_hashes (abfd);
2557 local_got_refcounts = elf_local_got_refcounts (abfd);
2558
915e5146
HPN		 2559 sgot = bfd_get_section_by_name (dynobj, ".got");
2560 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2561
2562 relend = relocs + sec->reloc_count;
2563 for (rel = relocs; rel < relend; rel++)
2564 {
babfd660 2565 unsigned long r_symndx;
3eb128b2 2566 struct elf_link_hash_entry *h = NULL;
100382c7
HPN		 2567 bfd_signed_vma got_element_size = 4;
2568 bfd_signed_vma *specific_refcount = NULL;
2569 enum elf_cris_reloc_type r_type;
3eb128b2
AM		 2570
2571 r_symndx = ELF32_R_SYM (rel->r_info);
2572 if (r_symndx >= symtab_hdr->sh_info)
2573 {
2574 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2575 while (h->root.type == bfd_link_hash_indirect
2576 || h->root.type == bfd_link_hash_warning)
2577 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2578 }
babfd660 2579
100382c7
HPN		 2580 r_type = ELF32_R_TYPE (rel->r_info);
2581 switch (r_type)
2582 {
2583 case R_CRIS_32_GOT:
2584 case R_CRIS_16_GOT:
2585 case R_CRIS_16_GOTPLT:
2586 case R_CRIS_32_GOTPLT:
2587 specific_refcount = h != NULL
2588 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2589 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2590 break;
2591
2592 case R_CRIS_32_GD:
2593 case R_CRIS_32_GOT_GD:
2594 case R_CRIS_16_GOT_GD:
2595 got_element_size = 8;
2596 specific_refcount = h != NULL
2597 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2598 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2599 break;
2600
75f500d7 2601 case R_CRIS_32_IE:
100382c7
HPN		 2602 case R_CRIS_16_GOT_TPREL:
2603 case R_CRIS_32_GOT_TPREL:
2604 specific_refcount = h != NULL
2605 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2606 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2607 break;
2608
2609 default:
2610 break;
2611 }
2612
2613 switch (r_type)
915e5146 2614 {
75f500d7 2615 case R_CRIS_32_IE:
100382c7
HPN		 2616 case R_CRIS_32_GD:
2617 case R_CRIS_16_GOT_TPREL:
2618 case R_CRIS_32_GOT_TPREL:
2619 case R_CRIS_32_GOT_GD:
2620 case R_CRIS_16_GOT_GD:
915e5146
HPN		 2621 case R_CRIS_16_GOT:
2622 case R_CRIS_32_GOT:
3eb128b2 2623 if (h != NULL)
915e5146 2624 {
100382c7
HPN		 2625 /* If the counters are 0 when we got here, we've
2626 miscounted somehow somewhere, an internal error. */
2627 BFD_ASSERT (h->got.refcount > 0);
2628 --h->got.refcount;
2629
2630 BFD_ASSERT (*specific_refcount > 0);
2631 --*specific_refcount;
2632 if (*specific_refcount == 0)
915e5146 2633 {
100382c7
HPN		 2634 /* We don't need the .got entry any more. */
2635 sgot->size -= got_element_size;
2636 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2637 }
2638 break;
2639 }
2640
2641 local_got_reloc:
2642 if (local_got_refcounts != NULL)
2643 {
100382c7
HPN		 2644 /* If the counters are 0 when we got here, we've
2645 miscounted somehow somewhere, an internal error. */
2646 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2647 --local_got_refcounts[r_symndx];
2648
2649 BFD_ASSERT (*specific_refcount > 0);
2650 --*specific_refcount;
2651 if (*specific_refcount == 0)
915e5146 2652 {
100382c7
HPN		 2653 /* We don't need the .got entry any more. */
2654 sgot->size -= got_element_size;
2655 if (info->shared)
2656 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN		 2657 }
2658 }
2659 break;
2660
2661 case R_CRIS_16_GOTPLT:
2662 case R_CRIS_32_GOTPLT:
2663 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2664 if (h == NULL)
915e5146 2665 goto local_got_reloc;
e4a2175c 2666 /* Fall through. */
3eb128b2 2667
915e5146
HPN		 2668 case R_CRIS_32_PLT_GOTREL:
2669 /* FIXME: We don't garbage-collect away the .got section. */
2670 if (local_got_refcounts != NULL)
2671 local_got_refcounts[-1]--;
2672 /* Fall through. */
3eb128b2 2673
915e5146
HPN		 2674 case R_CRIS_8_PCREL:
2675 case R_CRIS_16_PCREL:
2676 case R_CRIS_32_PCREL:
2677 case R_CRIS_32_PLT_PCREL:
3eb128b2 2678 if (h != NULL)
915e5146 2679 {
0a4787a0
HPN		 2680 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2681 && h->plt.refcount > 0)
915e5146
HPN		 2682 --h->plt.refcount;
2683 }
2684 break;
2685
100382c7
HPN		 2686 case R_CRIS_32_DTPREL:
2687 case R_CRIS_16_DTPREL:
2688 elf_cris_hash_table (info)->dtpmod_refcount--;
2689 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2690 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2691 BFD_ASSERT (local_got_refcounts != NULL);
2692 local_got_refcounts[-1]--;
2693 break;
2694
915e5146
HPN		 2695 default:
2696 break;
2697 }
2698 }
2699
b34976b6 2700 return TRUE;
06c15ad7
HPN		 2701}
2702
915e5146
HPN		 2703/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2704 entry but we found we will not create any. Called when we find we will
4d96d128
HPN		 2705 not have any PLT for this symbol, by for example
2706 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2707 or elf_cris_size_dynamic_sections if no dynamic sections will be
2708 created (we're only linking static objects). */
915e5146 2709
b34976b6 2710static bfd_boolean
915e5146
HPN		 2711elf_cris_adjust_gotplt_to_got (h, p)
2712 struct elf_cris_link_hash_entry *h;
2713 PTR p;
2714{
2715 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2716
e92d460e
AM		 2717 if (h->root.root.type == bfd_link_hash_warning)
2718 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2719
915e5146
HPN		 2720 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2721 if (h->gotplt_refcount <= 0)
b34976b6 2722 return TRUE;
915e5146 2723
100382c7 2724 if (h->reg_got_refcount > 0)
915e5146 2725 {
100382c7
HPN		 2726 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2727 Probably not necessary at this stage, but keeping them accurate
915e5146
HPN		 2728 helps avoiding surprises later. */
2729 h->root.got.refcount += h->gotplt_refcount;
100382c7 2730 h->reg_got_refcount += h->gotplt_refcount;
5e0f5ae3 2731 h->gotplt_refcount = 0;
915e5146
HPN		 2732 }
2733 else
2734 {
4d96d128 2735 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM		 2736 bfd *dynobj = elf_hash_table (info)->dynobj;
2737 asection *sgot;
2738 asection *srelgot;
2739
2740 BFD_ASSERT (dynobj != NULL);
2741 sgot = bfd_get_section_by_name (dynobj, ".got");
2742 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146 2743
100382c7
HPN		 2744 /* Put accurate refcounts there. */
2745 h->root.got.refcount += h->gotplt_refcount;
2746 h->reg_got_refcount = h->gotplt_refcount;
915e5146 2747
5e0f5ae3 2748 h->gotplt_refcount = 0;
915e5146 2749
44aa49bb
HPN		 2750 /* We always have a .got and a .rela.got section if there were
2751 GOTPLT relocs in input. */
2752 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN		 2753
2754 /* Allocate space in the .got section. */
eea6121a 2755 sgot->size += 4;
915e5146
HPN		 2756
2757 /* Allocate relocation space. */
eea6121a 2758 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 2759 }
2760
b34976b6 2761 return TRUE;
915e5146
HPN		 2762}
2763
2764/* Try to fold PLT entries with GOT entries. There are two cases when we
2765 want to do this:
2766
2767 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN		 2768 references, and this is not the executable. We don't have to
2769 generate a PLT at all.
915e5146 2770
e4a2175c
HPN		 2771 - When there are both (ordinary) PLT references and GOT references,
2772 and this isn't the executable.
915e5146 2773 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN		 2774 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2775 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN		 2776
2777 Though the latter case is handled when room for the PLT is allocated,
2778 not here.
2779
e4a2175c
HPN		 2780 By folding into the GOT, we may need a round-trip to a PLT in the
2781 executable for calls, a loss in performance. Still, losing a
2782 reloc is a win in size and at least in start-up time.
2783
915e5146
HPN		 2784 Note that this function is called before symbols are forced local by
2785 version scripts. The differing cases are handled by
2786 elf_cris_hide_symbol. */
2787
b34976b6 2788static bfd_boolean
915e5146
HPN		 2789elf_cris_try_fold_plt_to_got (h, p)
2790 struct elf_cris_link_hash_entry *h;
2791 PTR p;
2792{
2793 struct bfd_link_info *info = (struct bfd_link_info *) p;
2794
2795 /* If there are no GOT references for this symbol, we can't fold any
2796 other reference so there's nothing to do. Likewise if there are no
2797 PLT references; GOTPLT references included. */
2798 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2799 return TRUE;
915e5146
HPN		 2800
2801 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2802 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2803
2804 if (h->gotplt_refcount == h->root.plt.refcount)
2805 {
4d96d128 2806 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN		 2807 references. Convert PLT to GOT references. */
2808 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2809 return FALSE;
915e5146
HPN		 2810
2811 /* Clear the PLT references, so no PLT will be created. */
2812 h->root.plt.offset = (bfd_vma) -1;
2813 }
2814
b34976b6 2815 return TRUE;
915e5146
HPN		 2816}
2817
2818/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2819 to use a GOT entry (and create one) rather than requiring a GOTPLT
2820 entry. */
2821
2822static void
e5094212 2823elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN		 2824 struct bfd_link_info *info;
2825 struct elf_link_hash_entry *h;
b34976b6 2826 bfd_boolean force_local;
915e5146
HPN		 2827{
2828 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2829
e5094212 2830 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN		 2831}
2832
2833/* Adjust a symbol defined by a dynamic object and referenced by a
2834 regular object. The current definition is in some section of the
2835 dynamic object, but we're not including those sections. We have to
2836 change the definition to something the rest of the link can
2837 understand. */
2838
b34976b6 2839static bfd_boolean
915e5146
HPN		 2840elf_cris_adjust_dynamic_symbol (info, h)
2841 struct bfd_link_info *info;
2842 struct elf_link_hash_entry *h;
2843{
2844 bfd *dynobj;
2845 asection *s;
bac23f82 2846 bfd_size_type plt_entry_size;
915e5146
HPN		 2847
2848 dynobj = elf_hash_table (info)->dynobj;
2849
2850 /* Make sure we know what is going on here. */
2851 BFD_ASSERT (dynobj != NULL
f5385ebf 2852 && (h->needs_plt
f6e332e6 2853 || h->u.weakdef != NULL
f5385ebf
AM		 2854 || (h->def_dynamic
2855 && h->ref_regular
2856 && !h->def_regular)));
915e5146 2857
bac23f82
HPN		 2858 plt_entry_size
2859 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2860 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2861
915e5146
HPN		 2862 /* If this is a function, put it in the procedure linkage table. We
2863 will fill in the contents of the procedure linkage table later,
2864 when we know the address of the .got section. */
2865 if (h->type == STT_FUNC
f5385ebf 2866 || h->needs_plt)
915e5146 2867 {
6849c52f
HPN		 2868 /* If we link a program (not a DSO), we'll get rid of unnecessary
2869 PLT entries; we point to the actual symbols -- even for pic
2870 relocs, because a program built with -fpic should have the same
2871 result as one built without -fpic, specifically considering weak
2872 symbols.
2873 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2874 if (! info->shared
f5385ebf 2875 && !h->def_dynamic)
915e5146
HPN		 2876 {
2877 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN		 2878 but the symbol was not defined by a dynamic object. In such
2879 a case, we don't actually need to build a procedure linkage
2880 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2881 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM		 2882 BFD_ASSERT (h->needs_plt);
2883 h->needs_plt = 0;
915e5146 2884 h->plt.offset = (bfd_vma) -1;
915e5146
HPN		 2885 return
2886 elf_cris_adjust_gotplt_to_got ((struct
2887 elf_cris_link_hash_entry *) h,
2888 info);
2889 }
2890
e4a2175c
HPN		 2891 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2892 where a pointer-equivalent symbol was unimportant (i.e. more
2893 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2894 of the PLT. We can't for the executable, because the GOT
2895 entries will point to the PLT there (and be constant). */
2896 if (info->shared
2897 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2898 h, info))
b34976b6 2899 return FALSE;
915e5146
HPN		 2900
2901 /* GC or folding may have rendered this entry unused. */
2902 if (h->plt.refcount <= 0)
2903 {
f5385ebf 2904 h->needs_plt = 0;
915e5146 2905 h->plt.offset = (bfd_vma) -1;
b34976b6 2906 return TRUE;
915e5146
HPN		 2907 }
2908
2909 /* Make sure this symbol is output as a dynamic symbol. */
2910 if (h->dynindx == -1)
2911 {
c152c796 2912 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2913 return FALSE;
915e5146
HPN		 2914 }
2915
2916 s = bfd_get_section_by_name (dynobj, ".plt");
2917 BFD_ASSERT (s != NULL);
2918
2919 /* If this is the first .plt entry, make room for the special
2920 first entry. */
eea6121a 2921 if (s->size == 0)
bac23f82 2922 s->size += plt_entry_size;
915e5146
HPN		 2923
2924 /* If this symbol is not defined in a regular file, and we are
2925 not generating a shared library, then set the symbol to this
6849c52f 2926 location in the .plt. */
915e5146 2927 if (!info->shared
f5385ebf 2928 && !h->def_regular)
915e5146
HPN		 2929 {
2930 h->root.u.def.section = s;
eea6121a 2931 h->root.u.def.value = s->size;
915e5146
HPN		 2932 }
2933
4d96d128
HPN		 2934 /* If there's already a GOT entry, use that, not a .got.plt. A
2935 GOT field still has a reference count when we get here; it's
e4a2175c
HPN		 2936 not yet changed to an offset. We can't do this for an
2937 executable, because then the reloc associated with the PLT
2938 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2939 this to elf_cris_try_fold_plt_to_got. */
2940 if (info->shared && h->got.refcount > 0)
915e5146
HPN		 2941 {
2942 h->got.refcount += h->plt.refcount;
2943
2944 /* Mark the PLT offset to use the GOT entry by setting the low
2945 bit in the plt offset; it is always a multiple of
bac23f82
HPN		 2946 plt_entry_size (which is at least a multiple of 2). */
2947 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN		 2948
2949 /* Change the PLT refcount to an offset. */
eea6121a 2950 h->plt.offset = s->size;
915e5146
HPN		 2951
2952 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2953 that the got entry should be used instead. */
2954 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2955 h)->gotplt_offset == 0);
2956
2957 /* Make room for this entry. */
bac23f82 2958 s->size += plt_entry_size;
915e5146 2959
b34976b6 2960 return TRUE;
915e5146
HPN		 2961 }
2962
2963 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2964 h->plt.offset = s->size;
915e5146
HPN		 2965
2966 /* Make room for this entry. */
bac23f82 2967 s->size += plt_entry_size;
915e5146
HPN		 2968
2969 /* We also need to make an entry in the .got.plt section, which
2970 will be placed in the .got section by the linker script. */
2971 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2972 = elf_cris_hash_table (info)->next_gotplt_entry;
2973 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2974
2975 s = bfd_get_section_by_name (dynobj, ".got.plt");
2976 BFD_ASSERT (s != NULL);
eea6121a 2977 s->size += 4;
915e5146
HPN		 2978
2979 /* We also need to make an entry in the .rela.plt section. */
2980
2981 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2982 BFD_ASSERT (s != NULL);
eea6121a 2983 s->size += sizeof (Elf32_External_Rela);
915e5146 2984
b34976b6 2985 return TRUE;
915e5146
HPN		 2986 }
2987
2988 /* Reinitialize the plt offset now that it is not used as a reference
2989 count any more. */
2990 h->plt.offset = (bfd_vma) -1;
2991
2992 /* If this is a weak symbol, and there is a real definition, the
2993 processor independent code will have arranged for us to see the
2994 real definition first, and we can just use the same value. */
f6e332e6 2995 if (h->u.weakdef != NULL)
915e5146 2996 {
f6e332e6
AM		 2997 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2998 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2999 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3000 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 3001 return TRUE;
915e5146
HPN		 3002 }
3003
3004 /* This is a reference to a symbol defined by a dynamic object which
3005 is not a function. */
3006
3007 /* If we are creating a shared library, we must presume that the
3008 only references to the symbol are via the global offset table.
3009 For such cases we need not do anything here; the relocations will
3010 be handled correctly by relocate_section. */
3011 if (info->shared)
b34976b6 3012 return TRUE;
915e5146
HPN		 3013
3014 /* If there are no references to this symbol that do not use the
3015 GOT, we don't need to generate a copy reloc. */
f5385ebf 3016 if (!h->non_got_ref)
b34976b6 3017 return TRUE;
915e5146 3018
909272ee
AM		 3019 if (h->size == 0)
3020 {
3021 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3022 h->root.root.string);
3023 return TRUE;
3024 }
3025
915e5146
HPN		 3026 /* We must allocate the symbol in our .dynbss section, which will
3027 become part of the .bss section of the executable. There will be
3028 an entry for this symbol in the .dynsym section. The dynamic
3029 object will contain position independent code, so all references
3030 from the dynamic object to this symbol will go through the global
3031 offset table. The dynamic linker will use the .dynsym entry to
3032 determine the address it must put in the global offset table, so
3033 both the dynamic object and the regular object will refer to the
3034 same memory location for the variable. */
3035
3036 s = bfd_get_section_by_name (dynobj, ".dynbss");
3037 BFD_ASSERT (s != NULL);
3038
3039 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3040 copy the initial value out of the dynamic object and into the
3041 runtime process image. We need to remember the offset into the
3042 .rela.bss section we are going to use. */
3043 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3044 {
3045 asection *srel;
3046
3047 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3048 BFD_ASSERT (srel != NULL);
eea6121a 3049 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3050 h->needs_copy = 1;
915e5146
HPN		 3051 }
3052
027297b7 3053 return _bfd_elf_adjust_dynamic_copy (h, s);
915e5146
HPN		 3054}
3055
237bc7f0
HPN		 3056/* Adjust our "subclass" elements for an indirect symbol. */
3057
3058static void
3059elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3060 struct elf_link_hash_entry *dir,
3061 struct elf_link_hash_entry *ind)
3062{
3063 struct elf_cris_link_hash_entry *edir, *eind;
3064
3065 edir = (struct elf_cris_link_hash_entry *) dir;
3066 eind = (struct elf_cris_link_hash_entry *) ind;
3067
867ea5fd
HPN		 3068 /* Only indirect symbols are replaced; we're not interested in
3069 updating any of EIND's fields for other symbols. */
3070 if (eind->root.root.type != bfd_link_hash_indirect)
451ffe63
HPN		 3071 {
3072 /* Still, we need to copy flags for e.g. weak definitions. */
3073 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3074 return;
3075 }
867ea5fd 3076
237bc7f0
HPN		 3077 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3078 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3079
3080#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3081#define XMOVE(F) XMOVOPZ (F, +=, 0)
3082 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3083 XMOVE (gotplt_refcount);
3084 XMOVE (gotplt_offset);
3085 XMOVE (reg_got_refcount);
3086 XMOVE (tprel_refcount);
3087 XMOVE (dtp_refcount);
3088#undef XMOVE
3089#undef XMOVOPZ
3090
3091 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3092}
3093
915e5146 3094/* Look through the relocs for a section during the first phase. */
a7c10850 3095
b34976b6 3096static bfd_boolean
06c15ad7
HPN		 3097cris_elf_check_relocs (abfd, info, sec, relocs)
3098 bfd *abfd;
3099 struct bfd_link_info *info;
3100 asection *sec;
3101 const Elf_Internal_Rela *relocs;
3102{
915e5146 3103 bfd *dynobj;
06c15ad7 3104 Elf_Internal_Shdr *symtab_hdr;
5582a088 3105 struct elf_link_hash_entry **sym_hashes;
915e5146 3106 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN		 3107 const Elf_Internal_Rela *rel;
3108 const Elf_Internal_Rela *rel_end;
915e5146
HPN		 3109 asection *sgot;
3110 asection *srelgot;
3111 asection *sreloc;
a7c10850 3112
1049f94e 3113 if (info->relocatable)
b34976b6 3114 return TRUE;
a7c10850 3115
915e5146 3116 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN		 3117 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3118 sym_hashes = elf_sym_hashes (abfd);
915e5146
HPN		 3119 local_got_refcounts = elf_local_got_refcounts (abfd);
3120
3121 sgot = NULL;
3122 srelgot = NULL;
3123 sreloc = NULL;
3124
06c15ad7
HPN		 3125 rel_end = relocs + sec->reloc_count;
3126 for (rel = relocs; rel < rel_end; rel++)
3127 {
3128 struct elf_link_hash_entry *h;
3129 unsigned long r_symndx;
915e5146 3130 enum elf_cris_reloc_type r_type;
100382c7
HPN		 3131 bfd_signed_vma got_element_size = 4;
3132 unsigned long r_symndx_lgot = INT_MAX;
a7c10850 3133
06c15ad7
HPN		 3134 r_symndx = ELF32_R_SYM (rel->r_info);
3135 if (r_symndx < symtab_hdr->sh_info)
100382c7
HPN		 3136 {
3137 h = NULL;
3138 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3139 }
06c15ad7 3140 else
973a3492
L		 3141 {
3142 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3143 while (h->root.type == bfd_link_hash_indirect
3144 || h->root.type == bfd_link_hash_warning)
3145 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3146 }
a7c10850 3147
915e5146
HPN		 3148 r_type = ELF32_R_TYPE (rel->r_info);
3149
3150 /* Some relocs require linker-created sections; we need to hang them
3151 on the first input bfd we found that contained dynamic relocs. */
3152 switch (r_type)
3153 {
100382c7
HPN		 3154 case R_CRIS_16_DTPREL:
3155 case R_CRIS_32_DTPREL:
3156 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3157 entry at index 3. */
3158 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3159 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3160 elf_cris_hash_table (info)->dtpmod_refcount++;
3161 /* Fall through. */
3162
75f500d7 3163 case R_CRIS_32_IE:
100382c7
HPN		 3164 case R_CRIS_32_GD:
3165 case R_CRIS_16_GOT_GD:
3166 case R_CRIS_32_GOT_GD:
3167 case R_CRIS_32_GOT_TPREL:
3168 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3169 case R_CRIS_16_GOT:
3170 case R_CRIS_32_GOT:
3171 case R_CRIS_32_GOTREL:
3172 case R_CRIS_32_PLT_GOTREL:
3173 case R_CRIS_32_PLT_PCREL:
3174 case R_CRIS_16_GOTPLT:
3175 case R_CRIS_32_GOTPLT:
3176 if (dynobj == NULL)
3177 {
3178 elf_hash_table (info)->dynobj = dynobj = abfd;
3179
bac23f82
HPN		 3180 /* We could handle this if we can get a handle on the
3181 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3182 that, we must insist on dynobj being a specific mach. */
3183 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3184 {
3185 (*_bfd_error_handler)
3186 (_("%B, section %A:\n v10/v32 compatible object %s"
3187 " must not contain a PIC relocation"),
3188 abfd, sec);
3189 return FALSE;
3190 }
3191
915e5146
HPN		 3192 /* Create the .got section, so we can assume it's always
3193 present whenever there's a dynobj. */
3194 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 3195 return FALSE;
915e5146 3196 }
100382c7
HPN		 3197
3198 if (sgot == NULL)
3199 sgot = bfd_get_section_by_name (dynobj, ".got");
3200
3201 if (local_got_refcounts == NULL)
3202 {
3203 bfd_size_type amt;
3204
3205 /* We use index local_got_refcounts[-1] to count all
3206 GOT-relative relocations that do not have explicit
3207 GOT entries. */
3208 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3209 amt *= sizeof (bfd_signed_vma);
3210 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3211 if (local_got_refcounts == NULL)
3212 return FALSE;
3213
3214 local_got_refcounts++;
3215 elf_local_got_refcounts (abfd) = local_got_refcounts;
3216 }
915e5146
HPN		 3217 break;
3218
3219 default:
3220 break;
3221 }
3222
3223 /* Some relocs require a global offset table (but perhaps not a
3224 specific GOT entry). */
4d96d128 3225 switch (r_type)
915e5146 3226 {
100382c7
HPN		 3227 case R_CRIS_16_DTPREL:
3228 case R_CRIS_32_DTPREL:
3229 /* Not requesting .got.rela for an executable: the contents
3230 of the first entry is constant there. For a shared
3231 library, we need .got.rela for the R_CRIS_DTPMOD
3232 relocation at index 3. */
3233 if (!info->shared)
3234 break;
3235 /* Fall through. */
3236
75f500d7 3237 case R_CRIS_32_IE:
100382c7
HPN		 3238 case R_CRIS_32_GD:
3239 case R_CRIS_16_GOT_GD:
3240 case R_CRIS_32_GOT_GD:
3241 case R_CRIS_32_GOT_TPREL:
3242 case R_CRIS_16_GOT_TPREL:
3243 /* Fall through. */
3244
44aa49bb
HPN		 3245 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3246 entry only for local symbols. Unfortunately, we don't know
3247 until later on if there's a version script that forces the
3248 symbol local. We must have the .rela.got section in place
3249 before we know if the symbol looks global now, so we need
3250 to treat the reloc just like for R_CRIS_16_GOT and
3251 R_CRIS_32_GOT. */
3252 case R_CRIS_16_GOTPLT:
3253 case R_CRIS_32_GOTPLT:
915e5146
HPN		 3254 case R_CRIS_16_GOT:
3255 case R_CRIS_32_GOT:
44aa49bb
HPN		 3256 if (srelgot == NULL
3257 && (h != NULL || info->shared))
3258 {
3259 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3260 if (srelgot == NULL)
3261 {
3496cb2a
L		 3262 srelgot = bfd_make_section_with_flags (dynobj,
3263 ".rela.got",
3264 (SEC_ALLOC
3265 | SEC_LOAD
3266 | SEC_HAS_CONTENTS
3267 | SEC_IN_MEMORY
3268 | SEC_LINKER_CREATED
3269 | SEC_READONLY));
44aa49bb 3270 if (srelgot == NULL
44aa49bb 3271 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 3272 return FALSE;
44aa49bb
HPN		 3273 }
3274 }
100382c7 3275 break;
44aa49bb 3276
100382c7
HPN		 3277 default:
3278 break;
3279 }
915e5146 3280
100382c7
HPN		 3281 /* Warn and error for invalid input. */
3282 switch (r_type)
3283 {
75f500d7 3284 case R_CRIS_32_IE:
100382c7
HPN		 3285 case R_CRIS_32_TPREL:
3286 case R_CRIS_16_TPREL:
3287 case R_CRIS_32_GD:
3288 if (info->shared)
915e5146 3289 {
100382c7
HPN		 3290 (*_bfd_error_handler)
3291 (_("%B, section %A:\n relocation %s not valid"
3292 " in a shared object;"
3293 " typically an option mixup, recompile with -fPIC"),
3294 abfd,
3295 sec,
3296 cris_elf_howto_table[r_type].name);
3297 /* Don't return FALSE here; we want messages for all of
3298 these and the error behavior is ungraceful
3299 anyway. */
3300 }
3301 default:
3302 break;
3303 }
915e5146 3304
100382c7
HPN		 3305 switch (r_type)
3306 {
3307 case R_CRIS_32_GD:
3308 case R_CRIS_16_GOT_GD:
3309 case R_CRIS_32_GOT_GD:
3310 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3311 got_element_size = 8;
3312 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3313 break;
915e5146 3314
100382c7
HPN		 3315 case R_CRIS_16_DTPREL:
3316 case R_CRIS_32_DTPREL:
3317 /* These two just request for the constant-index
3318 module-local tls_index-sized GOT entry, which we add
3319 elsewhere. */
915e5146
HPN		 3320 break;
3321
75f500d7 3322 case R_CRIS_32_IE:
100382c7
HPN		 3323 case R_CRIS_32_GOT_TPREL:
3324 case R_CRIS_16_GOT_TPREL:
3325 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3326
75f500d7 3327 /* Those relocs also require that a DSO is of type
100382c7
HPN		 3328 Initial Exec. Like other targets, we don't reset this
3329 flag even if the relocs are GC:ed away. */
3330 if (info->shared)
3331 info->flags |= DF_STATIC_TLS;
3332 break;
3333
3334 /* Let's list the other assembler-generated TLS-relocs too,
3335 just to show that they're not forgotten. */
3336 case R_CRIS_16_TPREL:
3337 case R_CRIS_32_TPREL:
915e5146
HPN		 3338 default:
3339 break;
3340 }
3341
4d96d128 3342 switch (r_type)
06c15ad7 3343 {
915e5146
HPN		 3344 case R_CRIS_16_GOTPLT:
3345 case R_CRIS_32_GOTPLT:
3346 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3347 entry) is eliminated. We can only do this for a non-local
3348 symbol. */
3349 if (h != NULL)
3350 {
100382c7 3351 elf_cris_hash_entry (h)->gotplt_refcount++;
915e5146
HPN		 3352 goto handle_gotplt_reloc;
3353 }
3354 /* If h is NULL then this is a local symbol, and we must make a
3355 GOT entry for it, so handle it like a GOT reloc. */
3356 /* Fall through. */
3357
75f500d7 3358 case R_CRIS_32_IE:
100382c7
HPN		 3359 case R_CRIS_32_GD:
3360 case R_CRIS_16_GOT_GD:
3361 case R_CRIS_32_GOT_GD:
3362 case R_CRIS_32_GOT_TPREL:
3363 case R_CRIS_16_GOT_TPREL:
915e5146
HPN		 3364 case R_CRIS_16_GOT:
3365 case R_CRIS_32_GOT:
3366 /* This symbol requires a global offset table entry. */
915e5146
HPN		 3367 if (h != NULL)
3368 {
51b64d56 3369 if (h->got.refcount == 0)
915e5146 3370 {
915e5146
HPN		 3371 /* Make sure this symbol is output as a dynamic symbol. */
3372 if (h->dynindx == -1)
3373 {
c152c796 3374 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3375 return FALSE;
915e5146 3376 }
915e5146 3377 }
100382c7
HPN		 3378
3379 /* Update the sum of reloc counts for this symbol. */
51b64d56 3380 h->got.refcount++;
100382c7
HPN		 3381
3382 switch (r_type)
3383 {
3384 case R_CRIS_16_GOT:
3385 case R_CRIS_32_GOT:
3386 if (elf_cris_hash_entry (h)->reg_got_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)->reg_got_refcount++;
3394 break;
3395
3396 case R_CRIS_32_GD:
3397 case R_CRIS_16_GOT_GD:
3398 case R_CRIS_32_GOT_GD:
3399 if (elf_cris_hash_entry (h)->dtp_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)->dtp_refcount++;
3407 break;
3408
75f500d7 3409 case R_CRIS_32_IE:
100382c7
HPN		 3410 case R_CRIS_32_GOT_TPREL:
3411 case R_CRIS_16_GOT_TPREL:
3412 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3413 {
3414 /* Allocate space in the .got section. */
3415 sgot->size += got_element_size;
3416 /* Allocate relocation space. */
3417 srelgot->size += sizeof (Elf32_External_Rela);
3418 }
3419 elf_cris_hash_entry (h)->tprel_refcount++;
3420 break;
3421
3422 default:
3423 BFD_FAIL ();
3424 break;
3425 }
915e5146
HPN		 3426 }
3427 else
3428 {
3429 /* This is a global offset table entry for a local symbol. */
100382c7 3430 if (local_got_refcounts[r_symndx_lgot] == 0)
915e5146 3431 {
100382c7 3432 sgot->size += got_element_size;
915e5146
HPN		 3433 if (info->shared)
3434 {
100382c7
HPN		 3435 /* If we are generating a shared object, we need
3436 to output a R_CRIS_RELATIVE reloc so that the
3437 dynamic linker can adjust this GOT entry.
3438 Similarly for non-regular got entries. */
eea6121a 3439 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN		 3440 }
3441 }
100382c7
HPN		 3442 /* Update the reloc-specific count. */
3443 local_got_refcounts[r_symndx_lgot]++;
3444
3445 /* This one is the sum of all the others. */
51b64d56 3446 local_got_refcounts[r_symndx]++;
915e5146
HPN		 3447 }
3448 break;
3449
100382c7
HPN		 3450 case R_CRIS_16_DTPREL:
3451 case R_CRIS_32_DTPREL:
915e5146
HPN		 3452 case R_CRIS_32_GOTREL:
3453 /* This reference requires a global offset table.
3454 FIXME: The actual refcount isn't used currently; the .got
3455 section can't be removed if there were any references in the
3456 input. */
3457 local_got_refcounts[-1]++;
3458 break;
3459
3460 handle_gotplt_reloc:
3461
3462 case R_CRIS_32_PLT_GOTREL:
3463 /* This reference requires a global offset table. */
3464 local_got_refcounts[-1]++;
3465 /* Fall through. */
3466
3467 case R_CRIS_32_PLT_PCREL:
3468 /* This symbol requires a procedure linkage table entry. We
3469 actually build the entry in adjust_dynamic_symbol,
3470 because this might be a case of linking PIC code which is
3471 never referenced by a dynamic object, in which case we
3472 don't need to generate a procedure linkage table entry
3473 after all. */
3474
ada1953e
HPN		 3475 /* Beware: if we'd check for visibility of the symbol here
3476 (and not marking the need for a PLT when non-visible), we'd
3477 get into trouble with keeping handling consistent with
3478 regards to relocs found before definition and GOTPLT
3479 handling. Eliminable PLT entries will be dealt with later
3480 anyway. */
3481 if (h == NULL)
915e5146
HPN		 3482 continue;
3483
f5385ebf 3484 h->needs_plt = 1;
51b64d56 3485 h->plt.refcount++;
915e5146
HPN		 3486 break;
3487
3488 case R_CRIS_8:
3489 case R_CRIS_16:
3490 case R_CRIS_32:
3491 /* Let's help debug shared library creation. Any of these
0d08de41
HPN		 3492 relocs *can* be used in shared libs, but pages containing
3493 them cannot be shared, so they're not appropriate for
3494 common use. Don't warn for sections we don't care about,
3495 such as debug sections or non-constant sections. We
3496 can't help tables of (global) function pointers, for
3497 example, though they must be emitted in a (writable) data
3498 section to avoid having impure text sections. */
915e5146
HPN		 3499 if (info->shared
3500 && (sec->flags & SEC_ALLOC) != 0
3501 && (sec->flags & SEC_READONLY) != 0)
3502 {
3503 /* FIXME: How do we make this optionally a warning only? */
8f615d07 3504 (*_bfd_error_handler)
bac23f82
HPN		 3505 (_("%B, section %A:\n relocation %s should not"
3506 " be used in a shared object; recompile with -fPIC"),
d003868e
AM		 3507 abfd,
3508 sec,
8f615d07 3509 cris_elf_howto_table[r_type].name);
915e5146 3510 }
0d08de41
HPN		 3511 if (h != NULL)
3512 {
3513 h->non_got_ref = 1;
100382c7 3514
0d08de41
HPN		 3515 /* Make sure a plt entry is created for this symbol if it
3516 turns out to be a function defined by a dynamic object. */
3517 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3518 h->plt.refcount++;
3519 }
3520
3521 /* If we are creating a shared library and this is not a local
3522 symbol, we need to copy the reloc into the shared library.
3523 However when linking with -Bsymbolic and this is a global
3524 symbol which is defined in an object we are including in the
3525 link (i.e., DEF_REGULAR is set), then we can resolve the
3526 reloc directly. At this point we have not seen all the input
3527 files, so it is possible that DEF_REGULAR is not set now but
3528 will be set later (it is never cleared). In case of a weak
3529 definition, DEF_REGULAR may be cleared later by a strong
3530 definition in a shared library. We account for that
3531 possibility below by storing information in the relocs_copied
3532 field of the hash table entry. A similar situation occurs
3533 when creating shared libraries and symbol visibility changes
3534 render the symbol local. */
3535
3536 /* No need to do anything if we're not creating a shared object. */
3537 if (! info->shared)
3538 break;
3539
3540 /* We don't need to handle relocs into sections not going into
3541 the "real" output. */
3542 if ((sec->flags & SEC_ALLOC) == 0)
3543 break;
3544
3545 /* We may need to create a reloc section in the dynobj and made room
3546 for this reloc. */
3547 if (sreloc == NULL)
3548 {
3549 sreloc = _bfd_elf_make_dynamic_reloc_section
3550 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3551
3552 if (sreloc == NULL)
3553 return FALSE;
3554 }
3555
3556 if (sec->flags & SEC_READONLY)
3557 info->flags |= DF_TEXTREL;
3558
3559 sreloc->size += sizeof (Elf32_External_Rela);
3560 break;
915e5146
HPN		 3561
3562 case R_CRIS_8_PCREL:
3563 case R_CRIS_16_PCREL:
3564 case R_CRIS_32_PCREL:
3565 if (h != NULL)
3566 {
f5385ebf 3567 h->non_got_ref = 1;
915e5146
HPN		 3568
3569 /* Make sure a plt entry is created for this symbol if it
3570 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN		 3571 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3572 h->plt.refcount++;
915e5146
HPN		 3573 }
3574
3575 /* If we are creating a shared library and this is not a local
3576 symbol, we need to copy the reloc into the shared library.
3577 However when linking with -Bsymbolic and this is a global
3578 symbol which is defined in an object we are including in the
3579 link (i.e., DEF_REGULAR is set), then we can resolve the
3580 reloc directly. At this point we have not seen all the input
3581 files, so it is possible that DEF_REGULAR is not set now but
3582 will be set later (it is never cleared). In case of a weak
3583 definition, DEF_REGULAR may be cleared later by a strong
3584 definition in a shared library. We account for that
3585 possibility below by storing information in the relocs_copied
3586 field of the hash table entry. A similar situation occurs
3587 when creating shared libraries and symbol visibility changes
3588 render the symbol local. */
3589
3590 /* No need to do anything if we're not creating a shared object. */
3591 if (! info->shared)
3592 break;
3593
3594 /* We don't need to handle relocs into sections not going into
3595 the "real" output. */
3596 if ((sec->flags & SEC_ALLOC) == 0)
3597 break;
3598
0d08de41
HPN		 3599 /* If the symbol is local, then we know already we can
3600 eliminate the reloc. */
3601 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3602 break;
bac23f82 3603
0d08de41
HPN		 3604 /* If this is with -Bsymbolic and the symbol isn't weak, and
3605 is defined by an ordinary object (the ones we include in
3606 this shared library) then we can also eliminate the
3607 reloc. See comment above for more eliminable cases which
3608 we can't identify at this time. */
3609 if (info->symbolic
3610 && h->root.type != bfd_link_hash_defweak
3611 && h->def_regular)
3612 break;
915e5146 3613
83bac4b0
NC		 3614 /* We may need to create a reloc section in the dynobj and made room
3615 for this reloc. */
915e5146
HPN		 3616 if (sreloc == NULL)
3617 {
83bac4b0
NC		 3618 sreloc = _bfd_elf_make_dynamic_reloc_section
3619 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
915e5146 3620
83bac4b0 3621 if (sreloc == NULL)
b34976b6 3622 return FALSE;
915e5146
HPN		 3623 }
3624
eea6121a 3625 sreloc->size += sizeof (Elf32_External_Rela);
915e5146 3626
0d08de41
HPN		 3627 /* We count the number of PC relative relocations we have
3628 entered for this symbol, so that we can discard them
3629 again if the symbol is later defined by a regular object.
3630 We know that h is really a pointer to an
915e5146 3631 elf_cris_link_hash_entry. */
0d08de41
HPN		 3632 {
3633 struct elf_cris_link_hash_entry *eh;
3634 struct elf_cris_pcrel_relocs_copied *p;
915e5146 3635
0d08de41 3636 eh = elf_cris_hash_entry (h);
915e5146 3637
0d08de41
HPN		 3638 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3639 if (p->section == sreloc)
3640 break;
915e5146 3641
0d08de41
HPN		 3642 if (p == NULL)
3643 {
3644 p = ((struct elf_cris_pcrel_relocs_copied *)
3645 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3646 if (p == NULL)
3647 return FALSE;
3648 p->next = eh->pcrel_relocs_copied;
3649 eh->pcrel_relocs_copied = p;
3650 p->section = sreloc;
3651 p->count = 0;
3652 p->r_type = r_type;
3653 }
915e5146 3654
0d08de41
HPN		 3655 ++p->count;
3656 }
915e5146
HPN		 3657 break;
3658
06c15ad7
HPN		 3659 /* This relocation describes the C++ object vtable hierarchy.
3660 Reconstruct it for later use during GC. */
3661 case R_CRIS_GNU_VTINHERIT:
c152c796 3662 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3663 return FALSE;
06c15ad7 3664 break;
a7c10850 3665
06c15ad7
HPN		 3666 /* This relocation describes which C++ vtable entries are actually
3667 used. Record for later use during GC. */
3668 case R_CRIS_GNU_VTENTRY:
d17e0c6e
JB		 3669 BFD_ASSERT (h != NULL);
3670 if (h != NULL
3671 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3672 return FALSE;
06c15ad7 3673 break;
4d96d128 3674
100382c7
HPN		 3675 case R_CRIS_16_TPREL:
3676 case R_CRIS_32_TPREL:
3677 /* Already warned above, when necessary. */
3678 break;
3679
4d96d128
HPN		 3680 default:
3681 /* Other relocs do not appear here. */
3682 bfd_set_error (bfd_error_bad_value);
b34976b6 3683 return FALSE;
06c15ad7
HPN		 3684 }
3685 }
a7c10850 3686
b34976b6 3687 return TRUE;
06c15ad7 3688}
4da81684 3689
915e5146
HPN		 3690/* Set the sizes of the dynamic sections. */
3691
b34976b6 3692static bfd_boolean
915e5146 3693elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 3694 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN		 3695 struct bfd_link_info *info;
3696{
3697 bfd *dynobj;
3698 asection *s;
b34976b6
AM		 3699 bfd_boolean plt;
3700 bfd_boolean relocs;
915e5146
HPN		 3701
3702 dynobj = elf_hash_table (info)->dynobj;
3703 BFD_ASSERT (dynobj != NULL);
3704
3705 if (elf_hash_table (info)->dynamic_sections_created)
3706 {
3707 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3708 if (info->executable)
915e5146
HPN		 3709 {
3710 s = bfd_get_section_by_name (dynobj, ".interp");
3711 BFD_ASSERT (s != NULL);
eea6121a 3712 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN		 3713 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3714 }
3715 }
3716 else
3717 {
3718 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3719 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3720 elf_cris_adjust_gotplt_to_got,
3721 (PTR) info);
3722
3723 /* We may have created entries in the .rela.got section.
3724 However, if we are not creating the dynamic sections, we will
3725 not actually use these entries. Reset the size of .rela.got,
3726 which will cause it to get stripped from the output file
3727 below. */
3728 s = bfd_get_section_by_name (dynobj, ".rela.got");
3729 if (s != NULL)
eea6121a 3730 s->size = 0;
915e5146
HPN		 3731 }
3732
3733 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3734 relative relocs against symbols defined in a regular object. We
3735 allocated space for them in the check_relocs routine, but we will not
3736 fill them in in the relocate_section routine. We also discard space
3737 for relocs that have become for local symbols due to symbol
4d96d128
HPN		 3738 visibility changes. For programs, we discard space for relocs for
3739 symbols not referenced by any dynamic object. */
915e5146
HPN		 3740 if (info->shared)
3741 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN		 3742 elf_cris_discard_excess_dso_dynamics,
3743 (PTR) info);
3744 else
3745 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3746 elf_cris_discard_excess_program_dynamics,
915e5146
HPN		 3747 (PTR) info);
3748
3749 /* The check_relocs and adjust_dynamic_symbol entry points have
3750 determined the sizes of the various dynamic sections. Allocate
3751 memory for them. */
b34976b6
AM		 3752 plt = FALSE;
3753 relocs = FALSE;
915e5146
HPN		 3754 for (s = dynobj->sections; s != NULL; s = s->next)
3755 {
3756 const char *name;
915e5146
HPN		 3757
3758 if ((s->flags & SEC_LINKER_CREATED) == 0)
3759 continue;
3760
3761 /* It's OK to base decisions on the section name, because none
3762 of the dynobj section names depend upon the input files. */
3763 name = bfd_get_section_name (dynobj, s);
3764
915e5146
HPN		 3765 if (strcmp (name, ".plt") == 0)
3766 {
c456f082
AM		 3767 /* Remember whether there is a PLT. */
3768 plt = s->size != 0;
915e5146 3769 }
100382c7
HPN		 3770 else if (strcmp (name, ".got.plt") == 0)
3771 {
3772 /* The .got.plt contains the .got header as well as the
3773 actual .got.plt contents. The .got header may contain a
3774 R_CRIS_DTPMOD entry at index 3. */
3775 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3776 ? 8 : 0;
3777 }
0112cd26 3778 else if (CONST_STRNEQ (name, ".rela"))
915e5146 3779 {
100382c7
HPN		 3780 if (strcmp (name, ".rela.got") == 0
3781 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3782 && info->shared)
3783 s->size += sizeof (Elf32_External_Rela);
3784
c456f082 3785 if (s->size != 0)
915e5146 3786 {
915e5146
HPN		 3787 /* Remember whether there are any reloc sections other
3788 than .rela.plt. */
3789 if (strcmp (name, ".rela.plt") != 0)
b34976b6 3790 relocs = TRUE;
915e5146 3791
915e5146
HPN		 3792 /* We use the reloc_count field as a counter if we need
3793 to copy relocs into the output file. */
3794 s->reloc_count = 0;
3795 }
3796 }
0112cd26 3797 else if (! CONST_STRNEQ (name, ".got")
c456f082 3798 && strcmp (name, ".dynbss") != 0)
915e5146
HPN		 3799 {
3800 /* It's not one of our sections, so don't allocate space. */
3801 continue;
3802 }
3803
c456f082 3804 if (s->size == 0)
915e5146 3805 {
c456f082
AM		 3806 /* If we don't need this section, strip it from the
3807 output file. This is mostly to handle .rela.bss and
3808 .rela.plt. We must create both sections in
3809 create_dynamic_sections, because they must be created
3810 before the linker maps input sections to output
3811 sections. The linker does that before
3812 adjust_dynamic_symbol is called, and it is that
3813 function which decides whether anything needs to go
3814 into these sections. */
8423293d 3815 s->flags |= SEC_EXCLUDE;
915e5146
HPN		 3816 continue;
3817 }
3818
c456f082
AM		 3819 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3820 continue;
3821
915e5146
HPN		 3822 /* Allocate memory for the section contents. We use bfd_zalloc here
3823 in case unused entries are not reclaimed before the section's
3824 contents are written out. This should not happen, but this way
3825 if it does, we will not write out garbage. For reloc sections,
3826 this will make entries have the type R_CRIS_NONE. */
eea6121a 3827 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3828 if (s->contents == NULL)
b34976b6 3829 return FALSE;
915e5146
HPN		 3830 }
3831
3832 if (elf_hash_table (info)->dynamic_sections_created)
3833 {
3834 /* Add some entries to the .dynamic section. We fill in the
3835 values later, in elf_cris_finish_dynamic_sections, but we
3836 must add the entries now so that we get the correct size for
3837 the .dynamic section. The DT_DEBUG entry is filled in by the
3838 dynamic linker and used by the debugger. */
dc810e39 3839#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3840 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3841
915e5146
HPN		 3842 if (!info->shared)
3843 {
dc810e39 3844 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3845 return FALSE;
915e5146
HPN		 3846 }
3847
3848 if (plt)
3849 {
dc810e39
AM		 3850 if (!add_dynamic_entry (DT_PLTGOT, 0)
3851 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3852 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3853 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3854 return FALSE;
915e5146
HPN		 3855 }
3856
3857 if (relocs)
3858 {
dc810e39
AM		 3859 if (!add_dynamic_entry (DT_RELA, 0)
3860 || !add_dynamic_entry (DT_RELASZ, 0)
3861 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3862 return FALSE;
915e5146
HPN		 3863 }
3864
99e4ae17 3865 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3866 {
dc810e39 3867 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3868 return FALSE;
915e5146
HPN		 3869 info->flags |= DF_TEXTREL;
3870 }
3871 }
dc810e39 3872#undef add_dynamic_entry
915e5146 3873
b34976b6 3874 return TRUE;
915e5146
HPN		 3875}
3876
3877/* This function is called via elf_cris_link_hash_traverse if we are
3878 creating a shared object. In the -Bsymbolic case, it discards the
3879 space allocated to copy PC relative relocs against symbols which
3880 are defined in regular objects. For the normal non-symbolic case,
3881 we also discard space for relocs that have become local due to
3882 symbol visibility changes. We allocated space for them in the
3883 check_relocs routine, but we won't fill them in in the
3884 relocate_section routine. */
3885
b34976b6 3886static bfd_boolean
4d96d128 3887elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN		 3888 struct elf_cris_link_hash_entry *h;
3889 PTR inf;
3890{
3891 struct elf_cris_pcrel_relocs_copied *s;
3892 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3893
e92d460e
AM		 3894 if (h->root.root.type == bfd_link_hash_warning)
3895 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3896
915e5146
HPN		 3897 /* If a symbol has been forced local or we have found a regular
3898 definition for the symbolic link case, then we won't be needing
3899 any relocs. */
f5385ebf
AM		 3900 if (h->root.def_regular
3901 && (h->root.forced_local
915e5146
HPN		 3902 || info->symbolic))
3903 {
3904 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3905 s->section->size -= s->count * sizeof (Elf32_External_Rela);
0d08de41
HPN		 3906
3907 return TRUE;
3908 }
3909
3910 /* If we have accounted for PC-relative relocs for read-only
3911 sections, now is the time to warn for them. We can't do it in
3912 cris_elf_check_relocs, because we don't know the status of all
3913 symbols at that time (and it's common to force symbols local
3914 late). */
3915
3916 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3917 {
3918 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3919
3920 /* FIXME: How do we make this optionally a warning only? */
3921 (*_bfd_error_handler)
3922 (_("%B, section `%A', to symbol `%s':\n"
3923 " relocation %s should not be used"
3924 " in a shared object; recompile with -fPIC"),
3925 s->section->owner,
3926 s->section,
3927 h->root.root.root.string,
3928 cris_elf_howto_table[s->r_type].name);
3929
3930 info->flags |= DF_TEXTREL;
4d96d128
HPN		 3931 }
3932
b34976b6 3933 return TRUE;
4d96d128
HPN		 3934}
3935
3936/* This function is called via elf_cris_link_hash_traverse if we are *not*
3937 creating a shared object. We discard space for relocs for symbols put
3938 in the .got, but which we found we do not have to resolve at run-time. */
3939
b34976b6 3940static bfd_boolean
4d96d128
HPN		 3941elf_cris_discard_excess_program_dynamics (h, inf)
3942 struct elf_cris_link_hash_entry *h;
3943 PTR inf;
3944{
3945 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3946
e92d460e
AM		 3947 if (h->root.root.type == bfd_link_hash_warning)
3948 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3949
4d96d128
HPN		 3950 /* If we're not creating a shared library and have a symbol which is
3951 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN		 3952 (or rather, not defined by a DSO) then lose the reloc for the .got
3953 (don't allocate room for it). Likewise for relocs for something
3954 for which we create a PLT. */
f5385ebf 3955 if (!h->root.def_dynamic
e4a2175c 3956 || h->root.plt.refcount > 0)
4d96d128 3957 {
100382c7 3958 if (h->reg_got_refcount > 0
4d96d128
HPN		 3959 /* The size of this section is only valid and in sync with the
3960 various reference counts if we do dynamic; don't decrement it
3961 otherwise. */
3962 && elf_hash_table (info)->dynamic_sections_created)
3963 {
3964 bfd *dynobj = elf_hash_table (info)->dynobj;
3965 asection *srelgot;
3966
3967 BFD_ASSERT (dynobj != NULL);
99c79b2e 3968
4d96d128
HPN		 3969 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3970
3971 BFD_ASSERT (srelgot != NULL);
3972
eea6121a 3973 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN		 3974 }
3975
3976 /* If the locally-defined symbol isn't used by a DSO, then we don't
3977 have to export it as a dynamic symbol. This was already done for
3978 functions; doing this for all symbols would presumably not
e5dfef09
HPN		 3979 introduce new problems. Of course we don't do this if we're
3980 exporting all dynamic symbols. */
0741c7be 3981 if (! info->export_dynamic
77cfaee6 3982 && h->root.dynindx != -1
f5385ebf
AM		 3983 && !h->root.def_dynamic
3984 && !h->root.ref_dynamic)
e5dfef09
HPN		 3985 {
3986 h->root.dynindx = -1;
3987 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3988 h->root.dynstr_index);
3989 }
915e5146
HPN		 3990 }
3991
b34976b6 3992 return TRUE;
915e5146
HPN		 3993}
3994
3995/* Reject a file depending on presence and expectation of prefixed
3996 underscores on symbols. */
4da81684 3997
b34976b6 3998static bfd_boolean
4da81684
HPN		 3999cris_elf_object_p (abfd)
4000 bfd *abfd;
4001{
bac23f82
HPN		 4002 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4003 return FALSE;
4004
4da81684
HPN		 4005 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4006 return (bfd_get_symbol_leading_char (abfd) == '_');
4007 else
4008 return (bfd_get_symbol_leading_char (abfd) == 0);
4009}
4010
bac23f82
HPN		 4011/* Mark presence or absence of leading underscore. Set machine type
4012 flags from mach type. */
4da81684
HPN		 4013
4014static void
4015cris_elf_final_write_processing (abfd, linker)
4016 bfd *abfd;
b34976b6 4017 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 4018{
bac23f82
HPN		 4019 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4020
4021 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 4022 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN		 4023 e_flags |= EF_CRIS_UNDERSCORE;
4024
4025 switch (bfd_get_mach (abfd))
4026 {
4027 case bfd_mach_cris_v0_v10:
4028 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4029 break;
4030
4031 case bfd_mach_cris_v10_v32:
4032 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4033 break;
4034
4035 case bfd_mach_cris_v32:
4036 e_flags |= EF_CRIS_VARIANT_V32;
4037 break;
4038
4039 default:
4040 _bfd_abort (__FILE__, __LINE__,
4041 _("Unexpected machine number"));
4042 }
4043
4044 elf_elfheader (abfd)->e_flags = e_flags;
4045}
4046
4047/* Set the mach type from e_flags value. */
4048
4049static bfd_boolean
4050cris_elf_set_mach_from_flags (abfd, flags)
4051 bfd *abfd;
4052 unsigned long flags;
4053{
4054 switch (flags & EF_CRIS_VARIANT_MASK)
4055 {
4056 case EF_CRIS_VARIANT_ANY_V0_V10:
4057 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4058 break;
4059
4060 case EF_CRIS_VARIANT_V32:
4061 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4062 break;
4063
4064 case EF_CRIS_VARIANT_COMMON_V10_V32:
4065 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4066 break;
4067
4068 default:
4069 /* Since we don't recognize them, we obviously can't support them
4070 with this code; we'd have to require that all future handling
4071 would be optional. */
4072 bfd_set_error (bfd_error_wrong_format);
4073 return FALSE;
4074 }
4075
4076 return TRUE;
4da81684
HPN		 4077}
4078
4079/* Display the flags field. */
4080
b34976b6 4081static bfd_boolean
4da81684
HPN		 4082cris_elf_print_private_bfd_data (abfd, ptr)
4083 bfd *abfd;
4084 PTR ptr;
4085{
4086 FILE *file = (FILE *) ptr;
4087
f12123c0 4088 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN		 4089
4090 _bfd_elf_print_private_bfd_data (abfd, ptr);
4091
4092 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4093
4094 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4095 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN		 4096 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4097 == EF_CRIS_VARIANT_COMMON_V10_V32)
4098 fprintf (file, _(" [v10 and v32]"));
4099 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4100 == EF_CRIS_VARIANT_V32)
4101 fprintf (file, _(" [v32]"));
4da81684
HPN		 4102
4103 fputc ('\n', file);
b34976b6 4104 return TRUE;
4da81684
HPN		 4105}
4106
4107/* Don't mix files with and without a leading underscore. */
4108
b34976b6 4109static bfd_boolean
4da81684
HPN		 4110cris_elf_merge_private_bfd_data (ibfd, obfd)
4111 bfd *ibfd;
4112 bfd *obfd;
4113{
bac23f82 4114 int imach, omach;
4da81684 4115
82e51918 4116 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4117 return FALSE;
4da81684
HPN		 4118
4119 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4120 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4121 return TRUE;
4da81684 4122
bac23f82
HPN		 4123 imach = bfd_get_mach (ibfd);
4124
4da81684
HPN		 4125 if (! elf_flags_init (obfd))
4126 {
4127 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 4128 elf_flags_init (obfd) = TRUE;
4da81684 4129
bac23f82
HPN		 4130 /* We ignore the linker-set mach, and instead set it according to
4131 the first input file. This would also happen if we could
4132 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4133 This allows us to keep the same linker config across
4134 cris(v0..v10) and crisv32. The drawback is that we can't force
4135 the output type, which might be a sane thing to do for a
4136 v10+v32 compatibility object. */
4137 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4138 return FALSE;
4da81684
HPN		 4139 }
4140
bac23f82
HPN		 4141 if (bfd_get_symbol_leading_char (ibfd)
4142 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN		 4143 {
4144 (*_bfd_error_handler)
bac23f82 4145 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM		 4146 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4147 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4148 ibfd);
4da81684 4149 bfd_set_error (bfd_error_bad_value);
b34976b6 4150 return FALSE;
4da81684
HPN		 4151 }
4152
bac23f82
HPN		 4153 omach = bfd_get_mach (obfd);
4154
4155 if (imach != omach)
4156 {
4157 /* We can get an incompatible combination only if either is
4158 bfd_mach_cris_v32, and the other one isn't compatible. */
4159 if ((imach == bfd_mach_cris_v32
4160 && omach != bfd_mach_cris_v10_v32)
4161 || (omach == bfd_mach_cris_v32
4162 && imach != bfd_mach_cris_v10_v32))
4163 {
4164 (*_bfd_error_handler)
4165 ((imach == bfd_mach_cris_v32)
4166 ? _("%B contains CRIS v32 code, incompatible"
4167 " with previous objects")
4168 : _("%B contains non-CRIS-v32 code, incompatible"
4169 " with previous objects"),
4170 ibfd);
4171 bfd_set_error (bfd_error_bad_value);
4172 return FALSE;
4173 }
4174
4175 /* We don't have to check the case where the input is compatible
4176 with v10 and v32, because the output is already known to be set
4177 to the other (compatible) mach. */
4178 if (omach == bfd_mach_cris_v10_v32
4179 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4180 return FALSE;
4181 }
4182
b34976b6 4183 return TRUE;
4da81684 4184}
99e4ae17 4185
bac23f82
HPN		 4186/* Do side-effects of e_flags copying to obfd. */
4187
4188static bfd_boolean
4189cris_elf_copy_private_bfd_data (ibfd, obfd)
4190 bfd *ibfd;
4191 bfd *obfd;
4192{
4193 /* Call the base function. */
4194 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4195 return FALSE;
4196
4197 /* If output is big-endian for some obscure reason, stop here. */
4198 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4199 return FALSE;
4200
4201 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4202 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4203 return TRUE;
4204
4205 /* Do what we really came here for. */
4206 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4207}
99e4ae17
AJ		 4208
4209static enum elf_reloc_type_class
f51e552e
AM		 4210elf_cris_reloc_type_class (rela)
4211 const Elf_Internal_Rela *rela;
99e4ae17 4212{
100382c7
HPN		 4213 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4214 switch (r_type)
99e4ae17
AJ		 4215 {
4216 case R_CRIS_RELATIVE:
4217 return reloc_class_relative;
4218 case R_CRIS_JUMP_SLOT:
4219 return reloc_class_plt;
4220 case R_CRIS_COPY:
4221 return reloc_class_copy;
4222 default:
4223 return reloc_class_normal;
4224 }
4225}
100382c7
HPN		 4226
4227/* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4228 two GOT entries from three types with two different sizes. We handle
4229 it as a single entry, so we can use the regular offset-calculation
4230 machinery. */
4231
4232static bfd_vma
4233elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4234 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4235 struct elf_link_hash_entry *hr,
4236 bfd *ibfd,
4237 unsigned long symndx)
4238{
4239 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
100382c7
HPN		 4240 bfd_vma eltsiz = 0;
4241
4242 /* We may have one regular GOT entry or up to two TLS GOT
4243 entries. */
4244 if (h == NULL)
4245 {
b2e254f9 4246 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
100382c7
HPN		 4247 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4248
4249 BFD_ASSERT (local_got_refcounts != NULL);
4250
4251 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4252 {
4253 /* We can't have a variable referred to both as a regular
4254 variable and through TLS relocs. */
4255 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4256 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4257 return 4;
4258 }
4259
4260 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4261 eltsiz += 8;
4262
4263 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4264 eltsiz += 4;
4265 }
4266 else
4267 {
4268 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4269 if (hh->reg_got_refcount > 0)
4270 {
4271 /* The actual error-on-input is emitted elsewhere. */
4272 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4273 return 4;
4274 }
4275
4276 if (hh->dtp_refcount > 0)
4277 eltsiz += 8;
4278
4279 if (hh->tprel_refcount > 0)
4280 eltsiz += 4;
4281 }
4282
b2e254f9
HPN		 4283 /* We're only called when h->got.refcount is non-zero, so we must
4284 have a non-zero size. */
4285 BFD_ASSERT (eltsiz != 0);
100382c7
HPN		 4286 return eltsiz;
4287}
06c15ad7
HPN		 4288\f
4289#define ELF_ARCH bfd_arch_cris
4290#define ELF_MACHINE_CODE EM_CRIS
4291#define ELF_MAXPAGESIZE 0x2000
4292
4293#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4294#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 4295#define elf_symbol_leading_char 0
06c15ad7
HPN		 4296
4297#define elf_info_to_howto_rel NULL
4298#define elf_info_to_howto cris_info_to_howto_rela
4299#define elf_backend_relocate_section cris_elf_relocate_section
4300#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4301#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4302#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN		 4303#define elf_backend_grok_prstatus cris_elf_grok_prstatus
4304#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN		 4305
4306#define elf_backend_can_gc_sections 1
51b64d56 4307#define elf_backend_can_refcount 1
06c15ad7 4308
4da81684
HPN		 4309#define elf_backend_object_p cris_elf_object_p
4310#define elf_backend_final_write_processing \
4311 cris_elf_final_write_processing
4312#define bfd_elf32_bfd_print_private_bfd_data \
4313 cris_elf_print_private_bfd_data
4314#define bfd_elf32_bfd_merge_private_bfd_data \
4315 cris_elf_merge_private_bfd_data
bac23f82
HPN		 4316#define bfd_elf32_bfd_copy_private_bfd_data \
4317 cris_elf_copy_private_bfd_data
4da81684 4318
06c15ad7 4319#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
157090f7 4320#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
06c15ad7 4321
915e5146
HPN		 4322#define bfd_elf32_bfd_link_hash_table_create \
4323 elf_cris_link_hash_table_create
4324#define elf_backend_adjust_dynamic_symbol \
4325 elf_cris_adjust_dynamic_symbol
237bc7f0
HPN		 4326#define elf_backend_copy_indirect_symbol \
4327 elf_cris_copy_indirect_symbol
915e5146
HPN		 4328#define elf_backend_size_dynamic_sections \
4329 elf_cris_size_dynamic_sections
74541ad4 4330#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN		 4331#define elf_backend_finish_dynamic_symbol \
4332 elf_cris_finish_dynamic_symbol
4333#define elf_backend_finish_dynamic_sections \
4334 elf_cris_finish_dynamic_sections
4335#define elf_backend_create_dynamic_sections \
4336 _bfd_elf_create_dynamic_sections
4337#define bfd_elf32_bfd_final_link \
c152c796 4338 bfd_elf_gc_common_final_link
915e5146 4339#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 4340#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN		 4341
4342#define elf_backend_want_got_plt 1
4343#define elf_backend_plt_readonly 1
4344#define elf_backend_want_plt_sym 0
4345#define elf_backend_got_header_size 12
100382c7 4346#define elf_backend_got_elt_size elf_cris_got_elt_size
915e5146 4347
06c15ad7
HPN		 4348/* Later, we my want to optimize RELA entries into REL entries for dynamic
4349 linking and libraries (if it's a win of any significance). Until then,
4350 take the easy route. */
4351#define elf_backend_may_use_rel_p 0
4352#define elf_backend_may_use_rela_p 1
f0fe0e16 4353#define elf_backend_rela_normal 1
06c15ad7
HPN		 4354
4355#include "elf32-target.h"
4da81684 4356
4da81684
HPN		 4357#undef TARGET_LITTLE_SYM
4358#undef TARGET_LITTLE_NAME
4359#undef elf_symbol_leading_char
4360
4361#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4362#define TARGET_LITTLE_NAME "elf32-us-cris"
4363#define elf_symbol_leading_char '_'
16cecee5
L		 4364#undef elf32_bed
4365#define elf32_bed elf32_us_cris_bed
4da81684
HPN		 4366
4367#include "elf32-target.h"
GDB Binutils - Deliverables
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