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