* elf-hppa.h (elf_hppa_final_link): Use elf_hppa_final_link.
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
CommitLineData
06c15ad7 1/* CRIS-specific support for 32-bit ELF.
9dbe8890 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3eb128b2 3 Free Software Foundation, Inc.
06c15ad7
HPN
4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
915e5146 6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
06c15ad7 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
06c15ad7 9
ae9a127f
NC
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
06c15ad7 14
ae9a127f
NC
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
06c15ad7 19
ae9a127f
NC
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
cd123cb7
NC
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
06c15ad7 24
06c15ad7 25#include "sysdep.h"
3db64b00 26#include "bfd.h"
06c15ad7
HPN
27#include "libbfd.h"
28#include "elf-bfd.h"
29#include "elf/cris.h"
100382c7 30#include <limits.h>
06c15ad7
HPN
31
32/* Forward declarations. */
33static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35
a7c10850 36static void cris_info_to_howto_rela
947216bf 37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
06c15ad7 38
bac23f82
HPN
39static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41
b34976b6 42static bfd_boolean cris_elf_grok_prstatus
72209a1f
HPN
43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44
b34976b6 45static bfd_boolean cris_elf_grok_psinfo
72209a1f
HPN
46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47
b34976b6 48static bfd_boolean cris_elf_relocate_section
06c15ad7
HPN
49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51
52static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
55
b34976b6 56static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
4da81684 57
b34976b6 58static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
4da81684 59
bac23f82
HPN
60static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
62
b34976b6 63static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
4da81684 64
b34976b6 65static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
bac23f82 66static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
4da81684 67
915e5146 68struct elf_cris_link_hash_entry;
b34976b6 69static bfd_boolean elf_cris_discard_excess_dso_dynamics
4d96d128 70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 71static bfd_boolean elf_cris_discard_excess_program_dynamics
915e5146 72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 73static bfd_boolean elf_cris_adjust_gotplt_to_got
915e5146 74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
b34976b6 75static bfd_boolean elf_cris_try_fold_plt_to_got
915e5146
HPN
76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 PARAMS ((bfd *));
b34976b6 81static bfd_boolean elf_cris_adjust_dynamic_symbol
915e5146 82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 83static bfd_boolean cris_elf_check_relocs
99c79b2e
AJ
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86
b34976b6 87static bfd_boolean elf_cris_size_dynamic_sections
915e5146 88 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 89static bfd_boolean elf_cris_finish_dynamic_symbol
915e5146
HPN
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 Elf_Internal_Sym *));
b34976b6 92static bfd_boolean elf_cris_finish_dynamic_sections
915e5146
HPN
93 PARAMS ((bfd *, struct bfd_link_info *));
94static void elf_cris_hide_symbol
b34976b6 95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
99e4ae17 96static enum elf_reloc_type_class elf_cris_reloc_type_class
f51e552e 97 PARAMS ((const Elf_Internal_Rela *));
915e5146 98
06c15ad7
HPN
99static reloc_howto_type cris_elf_howto_table [] =
100{
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
103 0, /* rightshift */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
105 32, /* bitsize */
b34976b6 106 FALSE, /* pc_relative */
06c15ad7
HPN
107 0, /* bitpos */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
b34976b6 111 FALSE, /* partial_inplace */
06c15ad7
HPN
112 0, /* src_mask */
113 0, /* dst_mask */
b34976b6 114 FALSE), /* pcrel_offset */
06c15ad7
HPN
115
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
118 0, /* rightshift */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
120 8, /* bitsize */
b34976b6 121 FALSE, /* pc_relative */
06c15ad7
HPN
122 0, /* bitpos */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
b34976b6 126 FALSE, /* partial_inplace */
06c15ad7
HPN
127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
b34976b6 129 FALSE), /* pcrel_offset */
06c15ad7
HPN
130
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
133 0, /* rightshift */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
135 16, /* bitsize */
b34976b6 136 FALSE, /* pc_relative */
06c15ad7
HPN
137 0, /* bitpos */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
b34976b6 141 FALSE, /* partial_inplace */
06c15ad7
HPN
142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
b34976b6 144 FALSE), /* pcrel_offset */
06c15ad7
HPN
145
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
148 0, /* rightshift */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
150 32, /* bitsize */
b34976b6 151 FALSE, /* pc_relative */
06c15ad7 152 0, /* bitpos */
b2efcd36
HPN
153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
06c15ad7
HPN
159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
b34976b6 161 FALSE, /* partial_inplace */
06c15ad7
HPN
162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
06c15ad7 165
915e5146 166 /* An 8 bit PC-relative relocation. */
06c15ad7
HPN
167 HOWTO (R_CRIS_8_PCREL, /* type */
168 0, /* rightshift */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
170 8, /* bitsize */
b34976b6 171 TRUE, /* pc_relative */
06c15ad7
HPN
172 0, /* bitpos */
173 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 174 cris_elf_pcrel_reloc, /* special_function */
06c15ad7 175 "R_CRIS_8_PCREL", /* name */
b34976b6 176 FALSE, /* partial_inplace */
06c15ad7
HPN
177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
b34976b6 179 TRUE), /* pcrel_offset */
06c15ad7 180
915e5146 181 /* A 16 bit PC-relative relocation. */
06c15ad7
HPN
182 HOWTO (R_CRIS_16_PCREL, /* type */
183 0, /* rightshift */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
185 16, /* bitsize */
b34976b6 186 TRUE, /* pc_relative */
06c15ad7
HPN
187 0, /* bitpos */
188 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 189 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 190 "R_CRIS_16_PCREL", /* name */
b34976b6 191 FALSE, /* partial_inplace */
06c15ad7
HPN
192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
b34976b6 194 TRUE), /* pcrel_offset */
06c15ad7 195
915e5146 196 /* A 32 bit PC-relative relocation. */
06c15ad7
HPN
197 HOWTO (R_CRIS_32_PCREL, /* type */
198 0, /* rightshift */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
200 32, /* bitsize */
b34976b6 201 TRUE, /* pc_relative */
06c15ad7
HPN
202 0, /* bitpos */
203 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 204 cris_elf_pcrel_reloc, /* special_function */
44aa49bb 205 "R_CRIS_32_PCREL", /* name */
b34976b6 206 FALSE, /* partial_inplace */
06c15ad7
HPN
207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
b34976b6 209 TRUE), /* pcrel_offset */
06c15ad7 210
915e5146
HPN
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
06c15ad7
HPN
213 0, /* rightshift */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 0, /* bitsize */
b34976b6 216 FALSE, /* pc_relative */
06c15ad7
HPN
217 0, /* bitpos */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
b34976b6 221 FALSE, /* partial_inplace */
06c15ad7
HPN
222 0, /* src_mask */
223 0, /* dst_mask */
b34976b6 224 FALSE), /* pcrel_offset */
06c15ad7 225
915e5146
HPN
226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
06c15ad7
HPN
228 0, /* rightshift */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
b34976b6 231 FALSE, /* pc_relative */
06c15ad7
HPN
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
b34976b6 236 FALSE, /* partial_inplace */
06c15ad7
HPN
237 0, /* src_mask */
238 0, /* dst_mask */
b34976b6 239 FALSE), /* pcrel_offset */
915e5146
HPN
240
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
247 0, /* rightshift */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
249 32, /* bitsize */
b34976b6 250 FALSE, /* pc_relative */
915e5146
HPN
251 0, /* bitpos */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
b34976b6 255 FALSE, /* partial_inplace */
915e5146
HPN
256 0, /* src_mask */
257 0, /* dst_mask */
b34976b6 258 FALSE), /* pcrel_offset */
915e5146
HPN
259
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
b34976b6 265 FALSE, /* pc_relative */
915e5146
HPN
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_GLOB_DAT", /* name */
b34976b6 270 FALSE, /* partial_inplace */
915e5146
HPN
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
b34976b6 273 FALSE), /* pcrel_offset */
915e5146
HPN
274
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 32, /* bitsize */
b34976b6 280 FALSE, /* pc_relative */
915e5146
HPN
281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
b34976b6 285 FALSE, /* partial_inplace */
915e5146
HPN
286 0, /* src_mask */
287 0, /* dst_mask */
b34976b6 288 FALSE), /* pcrel_offset */
915e5146
HPN
289
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
292 addend. */
293 HOWTO (R_CRIS_RELATIVE, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 32, /* bitsize */
b34976b6 297 FALSE, /* pc_relative */
915e5146
HPN
298 0, /* bitpos */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
b34976b6 302 FALSE, /* partial_inplace */
915e5146
HPN
303 0, /* src_mask */
304 0xffffffff, /* dst_mask */
b34976b6 305 FALSE), /* pcrel_offset */
915e5146
HPN
306
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
309 0, /* rightshift */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
311 16, /* bitsize */
b34976b6 312 FALSE, /* pc_relative */
915e5146
HPN
313 0, /* bitpos */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
b34976b6 317 FALSE, /* partial_inplace */
915e5146
HPN
318 0, /* src_mask */
319 0xffff, /* dst_mask */
b34976b6 320 FALSE), /* pcrel_offset */
915e5146
HPN
321
322 HOWTO (R_CRIS_32_GOT, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 32, /* bitsize */
b34976b6 326 FALSE, /* pc_relative */
915e5146
HPN
327 0, /* bitpos */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
b34976b6 331 FALSE, /* partial_inplace */
915e5146
HPN
332 0, /* src_mask */
333 0xffffffff, /* dst_mask */
b34976b6 334 FALSE), /* pcrel_offset */
915e5146
HPN
335
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
339 0, /* rightshift */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
b34976b6 342 FALSE, /* pc_relative */
915e5146
HPN
343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
b34976b6 347 FALSE, /* partial_inplace */
915e5146
HPN
348 0, /* src_mask */
349 0xffff, /* dst_mask */
b34976b6 350 FALSE), /* pcrel_offset */
915e5146
HPN
351
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
b34976b6 356 FALSE, /* pc_relative */
915e5146
HPN
357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
b34976b6 361 FALSE, /* partial_inplace */
915e5146
HPN
362 0, /* src_mask */
363 0xffffffff, /* dst_mask */
b34976b6 364 FALSE), /* pcrel_offset */
915e5146
HPN
365
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 be necessary. */
368 HOWTO (R_CRIS_32_GOTREL, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 32, /* bitsize */
b34976b6 372 FALSE, /* pc_relative */
915e5146
HPN
373 0, /* bitpos */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
b34976b6 377 FALSE, /* partial_inplace */
915e5146
HPN
378 0, /* src_mask */
379 0xffffffff, /* dst_mask */
b34976b6 380 FALSE), /* pcrel_offset */
915e5146
HPN
381
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 32, /* bitsize */
b34976b6 388 FALSE, /* pc_relative */
915e5146
HPN
389 0, /* bitpos */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
b34976b6 393 FALSE, /* partial_inplace */
915e5146
HPN
394 0, /* src_mask */
395 0xffffffff, /* dst_mask */
b34976b6 396 FALSE), /* pcrel_offset */
915e5146
HPN
397
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
400 symbol. */
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 32, /* bitsize */
b34976b6 405 TRUE, /* pc_relative */
915e5146
HPN
406 0, /* bitpos */
407 complain_overflow_bitfield, /* complain_on_overflow */
bac23f82 408 cris_elf_pcrel_reloc, /* special_function */
915e5146 409 "R_CRIS_32_PLT_PCREL", /* name */
b34976b6 410 FALSE, /* partial_inplace */
915e5146
HPN
411 0, /* src_mask */
412 0xffffffff, /* dst_mask */
3926fc54
HPN
413 TRUE), /* pcrel_offset */
414
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420#define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
100382c7
HPN
423#define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
3926fc54 425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
100382c7
HPN
426#define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427#define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
3926fc54
HPN
428
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
100382c7 434 TLSHOWTO16S (R_CRIS_16_DTPREL),
3926fc54 435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
100382c7 436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
3926fc54 437 TLSHOWTO32 (R_CRIS_32_TPREL),
100382c7 438 TLSHOWTO16S (R_CRIS_16_TPREL),
75f500d7
HPN
439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
06c15ad7
HPN
441};
442\f
443/* Map BFD reloc types to CRIS ELF reloc types. */
444
445struct cris_reloc_map
446{
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
449};
450
451static const struct cris_reloc_map cris_reloc_map [] =
452{
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
915e5146
HPN
461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
3926fc54
HPN
472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
75f500d7
HPN
483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
06c15ad7
HPN
485};
486
487static reloc_howto_type *
488cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
491{
908d94bf 492 unsigned int i;
06c15ad7 493
908d94bf 494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
06c15ad7
HPN
495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
a7c10850 497
06c15ad7
HPN
498 return NULL;
499}
500
157090f7
AM
501static reloc_howto_type *
502cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
503{
504 unsigned int i;
505
506 for (i = 0;
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
508 i++)
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
512
513 return NULL;
514}
515
06c15ad7
HPN
516/* Set the howto pointer for an CRIS ELF reloc. */
517
518static void
519cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
521 arelent * cache_ptr;
947216bf 522 Elf_Internal_Rela * dst;
06c15ad7 523{
100382c7 524 enum elf_cris_reloc_type r_type;
06c15ad7
HPN
525
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
529}
bac23f82
HPN
530
531bfd_reloc_status_type
532cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
536 asymbol *symbol;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
539 bfd *output_bfd;
540 char **error_message ATTRIBUTE_UNUSED;
541{
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
549
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
553
554 return
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
557}
06c15ad7 558\f
bac23f82
HPN
559/* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
72209a1f 563
b34976b6 564static bfd_boolean
72209a1f
HPN
565cris_elf_grok_prstatus (abfd, note)
566 bfd *abfd;
567 Elf_Internal_Note *note;
568{
569 int offset;
eea6121a 570 size_t size;
72209a1f 571
bac23f82
HPN
572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
574 {
575 default:
576 return FALSE;
577
578 case 202: /* Linux/CRISv32 */
579 /* pr_cursig */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
581
582 /* pr_pid */
583 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
584
585 /* pr_reg */
586 offset = 70;
587 size = 128;
588
589 break;
590 }
591 else
592 switch (note->descsz)
593 {
72209a1f 594 default:
b34976b6 595 return FALSE;
72209a1f 596
bc0d28ee 597 case 214: /* Linux/CRIS */
72209a1f
HPN
598 /* pr_cursig */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
600
601 /* pr_pid */
602 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
603
604 /* pr_reg */
605 offset = 70;
eea6121a 606 size = 140;
72209a1f
HPN
607
608 break;
bac23f82 609 }
72209a1f
HPN
610
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 613 size, note->descpos + offset);
72209a1f
HPN
614}
615
b34976b6 616static bfd_boolean
72209a1f
HPN
617cris_elf_grok_psinfo (abfd, note)
618 bfd *abfd;
619 Elf_Internal_Note *note;
620{
bac23f82
HPN
621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
623 {
624 default:
625 return FALSE;
626
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
632 }
633 else
634 switch (note->descsz)
635 {
72209a1f 636 default:
b34976b6 637 return FALSE;
72209a1f
HPN
638
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
bac23f82 641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
72209a1f 642 elf_tdata (abfd)->core_command
bac23f82
HPN
643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
644 }
72209a1f
HPN
645
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
649
650 {
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
653
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
656 }
657
b34976b6 658 return TRUE;
72209a1f
HPN
659}
660\f
915e5146
HPN
661/* The name of the dynamic interpreter. This is put in the .interp
662 section. */
663
664#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
665
666/* The size in bytes of an entry in the procedure linkage table. */
667
668#define PLT_ENTRY_SIZE 20
bac23f82 669#define PLT_ENTRY_SIZE_V32 26
915e5146
HPN
670
671/* The first entry in an absolute procedure linkage table looks like this. */
672
673static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
674{
675 0xfc, 0xe1,
cedb70c5 676 0x7e, 0x7e, /* push mof. */
915e5146
HPN
677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
bac23f82
HPN
682 0x30, 0x09 /* jump [...] */
683};
684
685static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
686{
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
915e5146
HPN
697};
698
699/* Subsequent entries in an absolute procedure linkage table look like
700 this. */
701
702static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
703{
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
710 0xec, 0xff,
711 0xff, 0xff /* Replaced with offset to start of .plt. */
712};
713
bac23f82
HPN
714static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
715{
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
725 0xb0, 0x05 /* nop */
726};
727
915e5146
HPN
728/* The first entry in a PIC procedure linkage table looks like this. */
729
730static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
731{
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
736};
737
bac23f82
HPN
738static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
739{
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
749 0, 0, 0, 0,
750 0, 0, 0, 0
751};
752
915e5146
HPN
753/* Subsequent entries in a PIC procedure linkage table look like this. */
754
755static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
756{
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
764 0xff, 0xff
765};
bac23f82
HPN
766
767static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
768{
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
778 0xb0, 0x05 /* nop */
779};
915e5146
HPN
780\f
781/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
783 without reason.
784
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
791
792/* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
794
795struct elf_cris_pcrel_relocs_copied
796{
797 /* Next section. */
798 struct elf_cris_pcrel_relocs_copied *next;
0d08de41 799
915e5146
HPN
800 /* A section in dynobj. */
801 asection *section;
0d08de41 802
915e5146
HPN
803 /* Number of relocs copied in this section. */
804 bfd_size_type count;
0d08de41
HPN
805
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
915e5146
HPN
808};
809
810/* CRIS ELF linker hash entry. */
811
812struct elf_cris_link_hash_entry
813{
814 struct elf_link_hash_entry root;
815
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
818
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
822
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
825
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
100382c7
HPN
831
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
837
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
844
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
915e5146
HPN
849};
850
100382c7
HPN
851/* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
857 3*LSNUM. */
858
859#define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860#define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861#define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862#define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
863
915e5146
HPN
864/* CRIS ELF linker hash table. */
865
866struct elf_cris_link_hash_table
867{
868 struct elf_link_hash_table root;
869
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
100382c7
HPN
874
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
915e5146
HPN
881};
882
883/* Traverse a CRIS ELF linker hash table. */
884
885#define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
887 (&(table)->root, \
b34976b6 888 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
915e5146
HPN
889 (info)))
890
891/* Get the CRIS ELF linker hash table from a link_info structure. */
892
893#define elf_cris_hash_table(p) \
894 ((struct elf_cris_link_hash_table *) (p)->hash)
895
100382c7
HPN
896/* Get the CRIS ELF linker hash entry from a regular hash entry (the
897 "parent class"). The .root reference is just a simple type
898 check on the argument. */
899
900#define elf_cris_hash_entry(p) \
901 ((struct elf_cris_link_hash_entry *) (&(p)->root))
902
915e5146
HPN
903/* Create an entry in a CRIS ELF linker hash table. */
904
905static struct bfd_hash_entry *
906elf_cris_link_hash_newfunc (entry, table, string)
907 struct bfd_hash_entry *entry;
908 struct bfd_hash_table *table;
909 const char *string;
910{
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
913
914 /* Allocate the structure if it has not already been allocated by a
915 subclass. */
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
922
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
926 table, string));
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
928 {
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
100382c7
HPN
932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
915e5146
HPN
935 }
936
937 return (struct bfd_hash_entry *) ret;
938}
939
940/* Create a CRIS ELF linker hash table. */
941
942static struct bfd_link_hash_table *
943elf_cris_link_hash_table_create (abfd)
944 bfd *abfd;
945{
946 struct elf_cris_link_hash_table *ret;
dc810e39 947 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
915e5146 948
e2d34d7d 949 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
915e5146
HPN
950 if (ret == (struct elf_cris_link_hash_table *) NULL)
951 return NULL;
952
66eb6687
AM
953 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
954 elf_cris_link_hash_newfunc,
955 sizeof (struct elf_cris_link_hash_entry)))
915e5146 956 {
e2d34d7d 957 free (ret);
915e5146
HPN
958 return NULL;
959 }
960
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
964
100382c7
HPN
965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
967
915e5146
HPN
968 return &ret->root.root;
969}
970\f
06c15ad7 971/* Perform a single relocation. By default we use the standard BFD
915e5146 972 routines, with a few tweaks. */
06c15ad7
HPN
973
974static bfd_reloc_status_type
975cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
976 relocation)
977 reloc_howto_type * howto;
978 bfd * input_bfd;
979 asection * input_section;
980 bfd_byte * contents;
981 Elf_Internal_Rela * rel;
982 bfd_vma relocation;
983{
915e5146 984 bfd_reloc_status_type r;
100382c7 985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
915e5146
HPN
986
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
100382c7 990 switch (r_type)
915e5146
HPN
991 {
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
994 case R_CRIS_16_GOT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
997 break;
998
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1001 relocation -= 2;
1002 /* Fall through. */
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1005 relocation -= 2;
1006 break;
1007
1008 default:
1009 break;
1010 }
1011
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
06c15ad7
HPN
1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1015 return r;
1016}
1017\f
100382c7
HPN
1018
1019/* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024static int additional_relocation_error_msg_count = 10;
1025
06c15ad7
HPN
1026/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1028
b34976b6 1029static bfd_boolean
06c15ad7
HPN
1030cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031 contents, relocs, local_syms, local_sections)
b34976b6
AM
1032 bfd *output_bfd ATTRIBUTE_UNUSED;
1033 struct bfd_link_info *info;
1034 bfd *input_bfd;
1035 asection *input_section;
1036 bfd_byte *contents;
1037 Elf_Internal_Rela *relocs;
1038 Elf_Internal_Sym *local_syms;
1039 asection **local_sections;
06c15ad7 1040{
915e5146 1041 bfd *dynobj;
b34976b6
AM
1042 Elf_Internal_Shdr *symtab_hdr;
1043 struct elf_link_hash_entry **sym_hashes;
915e5146
HPN
1044 bfd_vma *local_got_offsets;
1045 asection *sgot;
1046 asection *splt;
1047 asection *sreloc;
b34976b6
AM
1048 Elf_Internal_Rela *rel;
1049 Elf_Internal_Rela *relend;
100382c7 1050 asection *srelgot;
06c15ad7 1051
915e5146
HPN
1052 dynobj = elf_hash_table (info)->dynobj;
1053 local_got_offsets = elf_local_got_offsets (input_bfd);
06c15ad7
HPN
1054 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055 sym_hashes = elf_sym_hashes (input_bfd);
1056 relend = relocs + input_section->reloc_count;
1057
915e5146
HPN
1058 sgot = NULL;
1059 splt = NULL;
1060 sreloc = NULL;
100382c7 1061 srelgot = NULL;
915e5146
HPN
1062
1063 if (dynobj != NULL)
1064 {
1065 splt = bfd_get_section_by_name (dynobj, ".plt");
1066 sgot = bfd_get_section_by_name (dynobj, ".got");
1067 }
1068
06c15ad7
HPN
1069 for (rel = relocs; rel < relend; rel ++)
1070 {
b34976b6
AM
1071 reloc_howto_type *howto;
1072 unsigned long r_symndx;
1073 Elf_Internal_Sym *sym;
1074 asection *sec;
1075 struct elf_link_hash_entry *h;
1076 bfd_vma relocation;
1077 bfd_reloc_status_type r;
1078 const char *symname = NULL;
100382c7 1079 enum elf_cris_reloc_type r_type;
a7c10850 1080
06c15ad7 1081 r_type = ELF32_R_TYPE (rel->r_info);
a7c10850 1082
06c15ad7
HPN
1083 if ( r_type == R_CRIS_GNU_VTINHERIT
1084 || r_type == R_CRIS_GNU_VTENTRY)
1085 continue;
a7c10850 1086
f0fe0e16 1087 r_symndx = ELF32_R_SYM (rel->r_info);
915e5146 1088 howto = cris_elf_howto_table + r_type;
06c15ad7
HPN
1089 h = NULL;
1090 sym = NULL;
1091 sec = NULL;
a7c10850 1092
06c15ad7
HPN
1093 if (r_symndx < symtab_hdr->sh_info)
1094 {
1095 sym = local_syms + r_symndx;
1096 sec = local_sections [r_symndx];
8517fae7 1097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
a7c10850 1098
dc810e39
AM
1099 symname = (bfd_elf_string_from_elf_section
1100 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101 if (symname == NULL)
1102 symname = bfd_section_name (input_bfd, sec);
06c15ad7
HPN
1103 }
1104 else
1105 {
560e09e9
NC
1106 bfd_boolean warned;
1107 bfd_boolean unresolved_reloc;
0a4787a0 1108
b2a8e766
AM
1109 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110 r_symndx, symtab_hdr, sym_hashes,
1111 h, sec, relocation,
1112 unresolved_reloc, warned);
915e5146 1113
100382c7
HPN
1114 symname = h->root.root.string;
1115
560e09e9 1116 if (unresolved_reloc
915e5146
HPN
1117 /* Perhaps we should detect the cases that
1118 sec->output_section is expected to be NULL like i386 and
1119 m68k, but apparently (and according to elfxx-ia64.c) all
1120 valid cases are where the symbol is defined in a shared
1121 object which we link dynamically against. This includes
1122 PLT relocs for which we've created a PLT entry and other
1123 relocs for which we're prepared to create dynamic
1124 relocations.
1125
1126 For now, new situations cause us to just err when
1127 sec->output_offset is NULL but the object with the symbol
1128 is *not* dynamically linked against. Thus this will
1129 automatically remind us so we can see if there are other
1130 valid cases we need to revisit. */
560e09e9
NC
1131 && (sec->owner->flags & DYNAMIC) != 0)
1132 relocation = 0;
1133
1134 else if (h->root.type == bfd_link_hash_defined
1135 || h->root.type == bfd_link_hash_defweak)
1136 {
1137 /* Here follow the cases where the relocation value must
1138 be zero (or when further handling is simplified when
1139 zero). I can't claim to understand the various
1140 conditions and they weren't described in the files
1141 where I copied them from (elf32-m68k.c and
1142 elf32-i386.c), but let's mention examples of where
1143 they happen. FIXME: Perhaps define and use a
1144 dynamic_symbol_p function like ia64.
1145
1146 - When creating a shared library, we can have an
1147 ordinary relocation for a symbol defined in a shared
1148 library (perhaps the one we create). We then make
1149 the relocation value zero, as the value seen now will
1150 be added into the relocation addend in this shared
1151 library, but must be handled only at dynamic-link
1152 time. FIXME: Not sure this example covers the
1153 h->elf_link_hash_flags test, though it's there in
1154 other targets. */
1155 if (info->shared
1156 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1157 || !h->def_regular)
560e09e9
NC
1158 && (input_section->flags & SEC_ALLOC) != 0
1159 && (r_type == R_CRIS_8
1160 || r_type == R_CRIS_16
1161 || r_type == R_CRIS_32
1162 || r_type == R_CRIS_8_PCREL
1163 || r_type == R_CRIS_16_PCREL
1164 || r_type == R_CRIS_32_PCREL))
915e5146 1165 relocation = 0;
ab96bf03 1166 else if (!info->relocatable && unresolved_reloc)
915e5146 1167 {
560e09e9 1168 _bfd_error_handler
bac23f82 1169 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
d003868e
AM
1170 input_bfd,
1171 input_section,
8f615d07 1172 cris_elf_howto_table[r_type].name,
d003868e 1173 symname);
915e5146 1174 bfd_set_error (bfd_error_bad_value);
b34976b6 1175 return FALSE;
915e5146 1176 }
06c15ad7 1177 }
06c15ad7 1178 }
a7c10850 1179
ab96bf03
AM
1180 if (sec != NULL && elf_discarded_section (sec))
1181 {
1182 /* For relocs against symbols from removed linkonce sections,
1183 or sections discarded by a linker script, we just want the
1184 section contents zeroed. Avoid any special processing. */
1185 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186 rel->r_info = 0;
1187 rel->r_addend = 0;
1188 continue;
1189 }
1190
1191 if (info->relocatable)
1192 continue;
1193
915e5146 1194 switch (r_type)
06c15ad7 1195 {
915e5146
HPN
1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1203 if (h != NULL
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
06c15ad7 1205 {
915e5146
HPN
1206 asection *sgotplt
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 bfd_vma got_offset;
a7c10850 1209
915e5146
HPN
1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
a7c10850 1212
915e5146
HPN
1213 got_offset
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
06c15ad7 1215
915e5146 1216 relocation = got_offset;
06c15ad7 1217 break;
915e5146 1218 }
06c15ad7 1219
4d96d128 1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
915e5146
HPN
1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
e4a2175c
HPN
1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1229 if (h != NULL
1230 && (h->got.offset == (bfd_vma) -1
1231 || (!info->shared
f5385ebf
AM
1232 && !(h->def_regular
1233 || (!h->def_dynamic
1234 && h->root.type == bfd_link_hash_undefweak)))))
915e5146
HPN
1235 {
1236 (*_bfd_error_handler)
e4a2175c 1237 ((h->got.offset == (bfd_vma) -1)
bac23f82 1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
d003868e 1239 " against symbol `%s'")
bac23f82 1240 : _("%B, section %A: No PLT for relocation %s"
d003868e
AM
1241 " against symbol `%s'"),
1242 input_bfd,
1243 input_section,
915e5146 1244 cris_elf_howto_table[r_type].name,
ada1953e
HPN
1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
915e5146
HPN
1247
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
b34976b6 1252 return FALSE;
915e5146
HPN
1253 }
1254 /* Fall through. */
1255
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1258 case R_CRIS_16_GOT:
1259 case R_CRIS_32_GOT:
1260 {
1261 bfd_vma off;
1262
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1266
1267 if (h != NULL)
1268 {
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272 if (!elf_hash_table (info)->dynamic_sections_created
205cfeb0 1273 || (! info->shared
f5385ebf 1274 && (h->def_regular
e4a2175c 1275 || h->type == STT_FUNC
f5385ebf 1276 || h->needs_plt))
915e5146
HPN
1277 || (info->shared
1278 && (info->symbolic || h->dynindx == -1)
f5385ebf 1279 && h->def_regular))
915e5146 1280 {
4d96d128 1281 /* This wasn't checked above for ! info->shared, but
e4a2175c
HPN
1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
6849c52f
HPN
1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || info->shared
f5385ebf 1287 || h->def_regular
e4a2175c 1288 || h->type == STT_FUNC
f5385ebf 1289 || h->needs_plt
6849c52f 1290 || h->root.type == bfd_link_hash_undefweak);
4d96d128 1291
915e5146 1292 /* This is actually a static link, or it is a
6849c52f
HPN
1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1301
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
915e5146
HPN
1306 if ((off & 1) != 0)
1307 off &= ~1;
1308 else
1309 {
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1312 h->got.offset |= 1;
1313 }
1314 }
1315 }
1316 else
1317 {
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321 off = local_got_offsets[r_symndx];
1322
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1326 if ((off & 1) != 0)
1327 off &= ~1;
1328 else
1329 {
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332 if (info->shared)
1333 {
915e5146 1334 Elf_Internal_Rela outrel;
947216bf 1335 bfd_byte *loc;
915e5146 1336
100382c7
HPN
1337 if (srelgot == NULL)
1338 srelgot
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
915e5146
HPN
1341
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1344 + off);
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
100382c7
HPN
1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
947216bf 1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1350 }
1351
1352 local_got_offsets[r_symndx] |= 1;
1353 }
1354 }
1355
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1358 {
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1363 if (h == NULL)
1364 (*_bfd_error_handler)
bac23f82 1365 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1366 " against local symbol"),
1367 input_bfd,
1368 input_section,
915e5146 1369 cris_elf_howto_table[r_type].name,
d003868e 1370 rel->r_addend);
915e5146
HPN
1371 else
1372 (*_bfd_error_handler)
bac23f82 1373 (_("%B, section %A: relocation %s with non-zero addend %d"
d003868e
AM
1374 " against symbol `%s'"),
1375 input_bfd,
1376 input_section,
915e5146
HPN
1377 cris_elf_howto_table[r_type].name,
1378 rel->r_addend,
d003868e 1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
915e5146
HPN
1380
1381 bfd_set_error (bfd_error_bad_value);
b34976b6 1382 return FALSE;
915e5146
HPN
1383 }
1384 }
1385 break;
06c15ad7 1386
915e5146 1387 case R_CRIS_32_GOTREL:
3dab95d3
HPN
1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1391 if (h != NULL
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393 && !(!info->shared
f5385ebf
AM
1394 && (h->def_regular
1395 || (!h->def_dynamic
3dab95d3 1396 && h->root.type == bfd_link_hash_undefweak))))
915e5146
HPN
1397 {
1398 (*_bfd_error_handler)
bac23f82
HPN
1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
d003868e
AM
1401 input_bfd,
1402 input_section,
915e5146 1403 cris_elf_howto_table[r_type].name,
d003868e 1404 symname);
915e5146 1405 bfd_set_error (bfd_error_bad_value);
b34976b6 1406 return FALSE;
06c15ad7
HPN
1407 }
1408
58255df3
HPN
1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1412 if (sgot == NULL)
1413 {
1414 (*_bfd_error_handler)
bac23f82 1415 (_("%B, section %A: relocation %s with no GOT created"),
d003868e
AM
1416 input_bfd,
1417 input_section,
1418 cris_elf_howto_table[r_type].name);
58255df3 1419 bfd_set_error (bfd_error_bad_value);
b34976b6 1420 return FALSE;
58255df3
HPN
1421 }
1422
915e5146
HPN
1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1429 break;
06c15ad7 1430
915e5146
HPN
1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
06c15ad7 1434
915e5146
HPN
1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
0a4787a0 1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1438 break;
1439
1440 if (h->plt.offset == (bfd_vma) -1
1441 || splt == NULL)
1442 {
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1446 break;
1447 }
1448
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1451 + h->plt.offset);
1452 break;
1453
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1457 R_CRIS_32_GOT. */
1458 relocation -= sgot->output_section->vma;
1459
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
0a4787a0 1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
915e5146
HPN
1463 break;
1464
1465 if (h->plt.offset == (bfd_vma) -1
1466 || splt == NULL)
1467 {
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1471 break;
1472 }
1473
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1476 + h->plt.offset
1477 - sgot->output_section->vma);
1478 break;
1479
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
0d08de41
HPN
1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
915e5146
HPN
1486 break;
1487
1488 /* Fall through. */
1489 case R_CRIS_8:
1490 case R_CRIS_16:
1491 case R_CRIS_32:
1492 if (info->shared
ec338859 1493 && r_symndx != 0
915e5146
HPN
1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1498 || (!info->symbolic
02865b8e 1499 || (h != NULL && !h->def_regular))))
915e5146
HPN
1500 {
1501 Elf_Internal_Rela outrel;
947216bf 1502 bfd_byte *loc;
b34976b6 1503 bfd_boolean skip, relocate;
915e5146
HPN
1504
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1507 time. */
1508
1509 if (sreloc == NULL)
1510 {
83bac4b0
NC
1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (input_bfd, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
915e5146
HPN
1515 cris_elf_merge_private_bfd_data. */
1516 if (sreloc == NULL)
1517 {
915e5146 1518 bfd_set_error (bfd_error_bad_value);
b34976b6 1519 return FALSE;
915e5146
HPN
1520 }
1521 }
1522
b34976b6
AM
1523 skip = FALSE;
1524 relocate = FALSE;
915e5146 1525
c629eae0
JJ
1526 outrel.r_offset =
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1528 rel->r_offset);
1529 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 1530 skip = TRUE;
b3bf42d8
HPN
1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1537 relocation. */
1538 || (h != NULL
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
b34976b6 1541 skip = TRUE, relocate = TRUE;
915e5146
HPN
1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1544
1545 if (skip)
0bb2d96a 1546 memset (&outrel, 0, sizeof outrel);
915e5146
HPN
1547 /* h->dynindx may be -1 if the symbol was marked to
1548 become local. */
1549 else if (h != NULL
1550 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 1551 || !h->def_regular))
915e5146
HPN
1552 {
1553 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN
1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1556 }
1557 else
1558 {
74541ad4
AM
1559 outrel.r_addend = relocation + rel->r_addend;
1560
915e5146
HPN
1561 if (r_type == R_CRIS_32)
1562 {
b34976b6 1563 relocate = TRUE;
915e5146 1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
915e5146
HPN
1565 }
1566 else
1567 {
1568 long indx;
1569
8517fae7 1570 if (bfd_is_abs_section (sec))
915e5146
HPN
1571 indx = 0;
1572 else if (sec == NULL || sec->owner == NULL)
1573 {
1574 bfd_set_error (bfd_error_bad_value);
b34976b6 1575 return FALSE;
915e5146
HPN
1576 }
1577 else
1578 {
1579 asection *osec;
1580
74541ad4
AM
1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
915e5146
HPN
1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
1588 if (indx == 0)
1589 {
1590 struct elf_cris_link_hash_table *htab;
1591 htab = elf_cris_hash_table (info);
1592 osec = htab->root.text_index_section;
1593 indx = elf_section_data (osec)->dynindx;
1594 }
1595 BFD_ASSERT (indx != 0);
915e5146
HPN
1596 }
1597
915e5146 1598 outrel.r_info = ELF32_R_INFO (indx, r_type);
915e5146
HPN
1599 }
1600 }
1601
947216bf
AM
1602 loc = sreloc->contents;
1603 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
915e5146
HPN
1605
1606 /* This reloc will be computed at runtime, so there's no
1607 need to do anything now, except for R_CRIS_32 relocations
1608 that have been turned into R_CRIS_RELATIVE. */
1609 if (!relocate)
1610 continue;
1611 }
1612
1613 break;
100382c7
HPN
1614
1615 case R_CRIS_16_DTPREL:
1616 case R_CRIS_32_DTPREL:
1617 /* This relocation must only be performed against local
1618 symbols. It's also ok when we link a program and the
1619 symbol is defined in an ordinary (non-DSO) object (if
1620 it's undefined there, we've already seen an error). */
1621 if (h != NULL
1622 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1623 && (info->shared
1624 || (!h->def_regular
1625 && h->root.type != bfd_link_hash_undefined)))
1626 {
1627 (*_bfd_error_handler)
1628 ((h->root.type == bfd_link_hash_undefined)
1629 /* We shouldn't get here for GCC-emitted code. */
1630 ? _("%B, section %A: relocation %s has an undefined"
1631 " reference to `%s', perhaps a declaration mixup?")
1632 : ("%B, section %A: relocation %s is"
1633 " not allowed for `%s', a global symbol with default"
1634 " visibility, perhaps a declaration mixup?"),
1635 input_bfd,
1636 input_section,
1637 cris_elf_howto_table[r_type].name,
1638 symname != NULL && symname[0] != '\0'
1639 ? symname : _("[whose name is lost]"));
1640 bfd_set_error (bfd_error_bad_value);
1641 return FALSE;
1642 }
1643
1644 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1645
1646 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1647 already done so. Note that we do this in .got.plt, not
1648 in .got, as .got.plt contains the first part, still the
1649 reloc is against .got, because the linker script directs
1650 (is required to direct) them both into .got. */
1651 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1652 {
1653 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1654 BFD_ASSERT (sgotplt != NULL);
1655
1656 if (info->shared)
1657 {
1658 Elf_Internal_Rela outrel;
1659 bfd_byte *loc;
1660
1661 if (srelgot == NULL)
1662 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1663 BFD_ASSERT (srelgot != NULL);
1664 loc = srelgot->contents;
1665 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1666
1667 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1668 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1669 outrel.r_offset = (sgotplt->output_section->vma
1670 + sgotplt->output_offset
1671 + 12);
1672 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1673 outrel.r_addend = 0;
1674 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1675 }
1676 else
1677 {
1678 /* For an executable, the GOT entry contents is known. */
1679 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1680 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1681 }
1682
1683 /* Reverse the sign to mark that we've emitted the
1684 required GOT entry. */
1685 elf_cris_hash_table (info)->dtpmod_refcount
1686 = -elf_cris_hash_table (info)->dtpmod_refcount;
1687 }
1688
1689 /* The thread-based offset to the local symbol is the
f551b6f0
HPN
1690 relocation.
1691 For the executable, TLS data begins at the thread pointer plus
1692 the negative size of the TLS data. For a DSO, that's part of
1693 the module TLS offset. */
100382c7 1694 relocation -= elf_hash_table (info)->tls_sec == NULL
f551b6f0
HPN
1695 ? 0 : (elf_hash_table (info)->tls_sec->vma
1696 + (info->shared
f6f05983 1697 ? 0 : elf_hash_table (info)->tls_size));
100382c7
HPN
1698 break;
1699
1700 case R_CRIS_32_GD:
1701 if (info->shared)
1702 {
1703 bfd_set_error (bfd_error_invalid_operation);
1704
1705 /* We've already informed in cris_elf_check_relocs that
1706 this is an error. */
1707 return FALSE;
1708 }
1709 /* Fall through. */
1710
1711 case R_CRIS_16_GOT_GD:
1712 case R_CRIS_32_GOT_GD:
1713 if (rel->r_addend != 0)
1714 {
1715 /* We can't do anything for a relocation which is against a
1716 symbol *plus offset*. The GOT holds relocations for
1717 symbols. Make this an error; the compiler isn't allowed
1718 to pass us these kinds of things. */
1719 (*_bfd_error_handler)
1720 (_("%B, section %A: relocation %s with non-zero addend %d"
1721 " against symbol `%s'"),
1722 input_bfd,
1723 input_section,
1724 cris_elf_howto_table[r_type].name,
1725 rel->r_addend,
1726 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1727
1728 bfd_set_error (bfd_error_bad_value);
1729 return FALSE;
1730 }
1731
1732 if (!info->shared && (h == NULL || h->def_regular))
1733 {
1734 /* Known contents of the GOT. */
1735 bfd_vma off;
1736
1737 /* The symbol is defined in the program, so just write
1bc86aea 1738 (1, -prog_tls_size+known_tpoffset) into the GOT. */
100382c7 1739 relocation -= elf_hash_table (info)->tls_sec->vma;
f6f05983 1740 relocation -= elf_hash_table (info)->tls_size;
100382c7
HPN
1741
1742 if (h != NULL)
1743 {
1744 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1745 ? h->got.offset + 4 : h->got.offset;
1746 }
1747 else
1748 {
1749 off = local_got_offsets[r_symndx];
1750 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1751 off += 4;
1752 }
1753
1754 /* We use bit 1 of the offset as a flag for GOT entry with
1755 the R_CRIS_DTP reloc, setting it when we've emitted the
1756 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1757 relocs. */
1758 if ((off & 2) == 0)
1759 {
1760 off &= ~3;
1761
1762 if (h != NULL)
1763 h->got.offset |= 2;
1764 else
1765 local_got_offsets[r_symndx] |= 2;
1766
1767 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1768 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1769 }
1770 else
1771 off &= ~3;
1772
1773 relocation = sgot->output_offset + off
1774 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1775 }
1776 else
1777 {
1778 /* Not all parts of the GOT entry are known; emit a real
1779 relocation. */
1780 bfd_vma off;
1781
1782 if (h != NULL)
1783 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1784 ? h->got.offset + 4 : h->got.offset;
1785 else
1786 {
1787 off = local_got_offsets[r_symndx];
1788 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1789 off += 4;
1790 }
1791
1792 /* See above re bit 1 and bit 0 usage. */
1793 if ((off & 2) == 0)
1794 {
1795 Elf_Internal_Rela outrel;
1796 bfd_byte *loc;
1797
1798 off &= ~3;
1799
1800 if (h != NULL)
1801 h->got.offset |= 2;
1802 else
1803 local_got_offsets[r_symndx] |= 2;
1804
1805 /* Clear the target contents of the GOT (just as a
1806 gesture; it's already cleared on allocation): this
1807 relocation is not like the other dynrelocs. */
1808 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1809 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1810
1811 if (srelgot == NULL)
1812 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1813 BFD_ASSERT (srelgot != NULL);
1814
1815 if (h != NULL && h->dynindx != -1)
1816 {
1817 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1818 relocation = 0;
1819 }
1820 else
1821 {
1822 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1823
1824 /* NULL if we had an error. */
1825 relocation -= elf_hash_table (info)->tls_sec == NULL
1826 ? 0 : elf_hash_table (info)->tls_sec->vma;
1827 }
1828
1829 outrel.r_offset = (sgot->output_section->vma
1830 + sgot->output_offset
1831 + off);
1832 outrel.r_addend = relocation;
1833 loc = srelgot->contents;
1834 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1835
1836 /* NULL if we had an error. */
1837 if (srelgot->contents != NULL)
1838 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1839 }
1840 else
1841 off &= ~3;
1842
1843 relocation = sgot->output_offset + off
1844 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1845 }
1846
1847 /* The GOT-relative offset to the GOT entry is the
1848 relocation, or for R_CRIS_32_GD, the actual address of
1849 the GOT entry. */
1850 break;
1851
75f500d7
HPN
1852 case R_CRIS_32_IE:
1853 if (info->shared)
1854 {
1855 bfd_set_error (bfd_error_invalid_operation);
1856
1857 /* We've already informed in cris_elf_check_relocs that
1858 this is an error. */
1859 return FALSE;
1860 }
1861 /* Fall through. */
1862
100382c7
HPN
1863 case R_CRIS_32_GOT_TPREL:
1864 case R_CRIS_16_GOT_TPREL:
1865 if (rel->r_addend != 0)
1866 {
1867 /* We can't do anything for a relocation which is
1868 against a symbol *plus offset*. GOT holds
1869 relocations for symbols. Make this an error; the
1870 compiler isn't allowed to pass us these kinds of
1871 things. */
1872 (*_bfd_error_handler)
1873 (_("%B, section %A: relocation %s with non-zero addend %d"
1874 " against symbol `%s'"),
1875 input_bfd,
1876 input_section,
1877 cris_elf_howto_table[r_type].name,
1878 rel->r_addend,
1879 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1880 bfd_set_error (bfd_error_bad_value);
1881 return FALSE;
1882 }
1883
1884 if (!info->shared && (h == NULL || h->def_regular))
1885 {
1886 /* Known contents of the GOT. */
1887 bfd_vma off;
1888
1889 /* The symbol is defined in the program, so just write
1bc86aea 1890 the -prog_tls_size+known_tpoffset into the GOT. */
100382c7 1891 relocation -= elf_hash_table (info)->tls_sec->vma;
f6f05983 1892 relocation -= elf_hash_table (info)->tls_size;
100382c7
HPN
1893
1894 if (h != NULL)
1895 off = h->got.offset;
1896 else
1897 off = local_got_offsets[r_symndx];
1898
1899 /* Bit 0 is used to mark whether we've emitted the required
1900 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1901 is used similarly for R_CRIS_DTP, see above. */
1902 if ((off & 1) == 0)
1903 {
1904 off &= ~3;
1905
1906 if (h != NULL)
1907 h->got.offset |= 1;
1908 else
1909 local_got_offsets[r_symndx] |= 1;
1910
1911 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1912 }
1913 else
1914 off &= ~3;
1915
75f500d7
HPN
1916 relocation = sgot->output_offset + off
1917 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN
1918 }
1919 else
1920 {
1921 /* Emit a real relocation. */
1922 bfd_vma off;
1923
1924 if (h != NULL)
1925 off = h->got.offset;
1926 else
1927 off = local_got_offsets[r_symndx];
1928
1929 /* See above re usage of bit 0 and 1. */
1930 if ((off & 1) == 0)
1931 {
1932 Elf_Internal_Rela outrel;
1933 bfd_byte *loc;
1934
1935 off &= ~3;
1936
1937 if (h != NULL)
1938 h->got.offset |= 1;
1939 else
1940 local_got_offsets[r_symndx] |= 1;
1941
1942 if (srelgot == NULL)
1943 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1944 BFD_ASSERT (srelgot != NULL);
1945
1946 if (h != NULL && h->dynindx != -1)
1947 {
1948 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1949 relocation = 0;
1950 }
1951 else
1952 {
1953 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1954
1955 /* NULL if we had an error. */
1956 relocation -= elf_hash_table (info)->tls_sec == NULL
1957 ? 0 : elf_hash_table (info)->tls_sec->vma;
1958 }
1959
1960 /* Just "define" the initial contents in some
1961 semi-logical way. */
1962 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1963
1964 outrel.r_offset = (sgot->output_section->vma
1965 + sgot->output_offset
1966 + off);
1967 outrel.r_addend = relocation;
1968 loc = srelgot->contents;
1969 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1970 /* NULL if we had an error. */
1971 if (srelgot->contents != NULL)
1972 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1973 }
1974 else
1975 off &= ~3;
1976
75f500d7
HPN
1977 relocation = sgot->output_offset + off
1978 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN
1979 }
1980
75f500d7
HPN
1981 /* The GOT-relative offset to the GOT entry is the relocation,
1982 or for R_CRIS_32_GD, the actual address of the GOT entry. */
100382c7
HPN
1983 break;
1984
1985 case R_CRIS_16_TPREL:
1986 case R_CRIS_32_TPREL:
1987 /* This relocation must only be performed against symbols
1988 defined in an ordinary (non-DSO) object. */
1989 if (info->shared)
1990 {
1991 bfd_set_error (bfd_error_invalid_operation);
1992
1993 /* We've already informed in cris_elf_check_relocs that
1994 this is an error. */
1995 return FALSE;
1996 }
1997
1998 if (h != NULL
1999 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2000 && !h->def_regular
2001 /* If it's undefined, then an error message has already
2002 been emitted. */
2003 && h->root.type != bfd_link_hash_undefined)
2004 {
2005 (*_bfd_error_handler)
2006 (_("%B, section %A: relocation %s is"
2007 " not allowed for symbol: `%s'"
2008 " which is defined outside the program,"
2009 " perhaps a declaration mixup?"),
2010 input_bfd,
2011 input_section,
2012 cris_elf_howto_table[r_type].name,
2013 symname);
2014 bfd_set_error (bfd_error_bad_value);
2015 return FALSE;
2016 }
2017
2018 /* NULL if we had an error. */
2019 relocation -= elf_hash_table (info)->tls_sec == NULL
1bc86aea
HPN
2020 ? 0
2021 : (elf_hash_table (info)->tls_sec->vma
f6f05983 2022 + elf_hash_table (info)->tls_size);
100382c7
HPN
2023
2024 /* The TLS-relative offset is the relocation. */
2025 break;
2026
2027 default:
2028 BFD_FAIL ();
2029 return FALSE;
915e5146
HPN
2030 }
2031
2032 r = cris_final_link_relocate (howto, input_bfd, input_section,
2033 contents, rel, relocation);
2034
2035 if (r != bfd_reloc_ok)
2036 {
2037 const char * msg = (const char *) NULL;
2038
2039 switch (r)
2040 {
2041 case bfd_reloc_overflow:
2042 r = info->callbacks->reloc_overflow
dfeffb9f
L
2043 (info, (h ? &h->root : NULL), symname, howto->name,
2044 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
100382c7
HPN
2045 if (additional_relocation_error_msg_count > 0)
2046 {
2047 additional_relocation_error_msg_count--;
2048 switch (r_type)
2049 {
2050 case R_CRIS_16_GOTPLT:
2051 case R_CRIS_16_GOT:
2052
2053 /* Not just TLS is involved here, so we make
2054 generation and message depend on -fPIC/-fpic
2055 only. */
2056 case R_CRIS_16_GOT_TPREL:
2057 case R_CRIS_16_GOT_GD:
2058 (*_bfd_error_handler)
2059 (_("(too many global variables for -fpic:"
2060 " recompile with -fPIC)"));
2061 break;
2062
2063 case R_CRIS_16_TPREL:
2064 case R_CRIS_16_DTPREL:
2065 (*_bfd_error_handler)
2066 (_("(thread-local data too big for -fpic or"
2067 " -msmall-tls: recompile with -fPIC or"
2068 " -mno-small-tls)"));
2069 break;
2070
2071 /* No known cause for overflow for other relocs. */
2072 default:
2073 break;
2074 }
2075 }
915e5146
HPN
2076 break;
2077
2078 case bfd_reloc_undefined:
2079 r = info->callbacks->undefined_symbol
dc810e39 2080 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 2081 TRUE);
915e5146
HPN
2082 break;
2083
2084 case bfd_reloc_outofrange:
2085 msg = _("internal error: out of range error");
2086 break;
2087
2088 case bfd_reloc_notsupported:
2089 msg = _("internal error: unsupported relocation error");
2090 break;
2091
2092 case bfd_reloc_dangerous:
2093 msg = _("internal error: dangerous relocation");
2094 break;
2095
2096 default:
2097 msg = _("internal error: unknown error");
2098 break;
2099 }
2100
2101 if (msg)
2102 r = info->callbacks->warning
dc810e39 2103 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN
2104
2105 if (! r)
b34976b6 2106 return FALSE;
915e5146
HPN
2107 }
2108 }
2109
b34976b6 2110 return TRUE;
915e5146
HPN
2111}
2112\f
2113/* Finish up dynamic symbol handling. We set the contents of various
2114 dynamic sections here. */
2115
b34976b6 2116static bfd_boolean
915e5146
HPN
2117elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2118 bfd *output_bfd;
2119 struct bfd_link_info *info;
2120 struct elf_link_hash_entry *h;
2121 Elf_Internal_Sym *sym;
2122{
2123 bfd *dynobj;
bac23f82
HPN
2124
2125 /* Where in the plt entry to put values. */
915e5146
HPN
2126 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2127
bac23f82
HPN
2128 /* What offset to add to the distance to the first PLT entry for the
2129 value at plt_off3. */
2130 int plt_off3_value_bias = 4;
2131
2132 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2133 for PIC and non-PIC for v32 and pre-v32). */
2134 int plt_stub_offset = 8;
2135 int plt_entry_size = PLT_ENTRY_SIZE;
2136 const bfd_byte *plt_entry = elf_cris_plt_entry;
2137 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2138
2139 /* Adjust the various PLT entry offsets. */
2140 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2141 {
2142 plt_off2 = 14;
2143 plt_off3 = 20;
2144 plt_off3_value_bias = -2;
2145 plt_stub_offset = 12;
2146 plt_entry_size = PLT_ENTRY_SIZE_V32;
2147 plt_entry = elf_cris_plt_entry_v32;
2148 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2149 }
2150
915e5146
HPN
2151 dynobj = elf_hash_table (info)->dynobj;
2152
2153 if (h->plt.offset != (bfd_vma) -1)
2154 {
2155 asection *splt;
2156 asection *sgotplt;
2157 asection *sgot;
2158 asection *srela;
2159 bfd_vma got_base;
2160
2161 bfd_vma gotplt_offset
100382c7 2162 = elf_cris_hash_entry (h)->gotplt_offset;
915e5146 2163 Elf_Internal_Rela rela;
947216bf 2164 bfd_byte *loc;
b34976b6 2165 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146 2166
0bdf8d40
HPN
2167 /* Get the index in the .rela.plt relocations for the .got.plt
2168 entry that corresponds to this symbol.
2169 We have to count backwards here, and the result is only valid
2170 as an index into .rela.plt. We also have to undo the effect
2171 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2172 .got.plt) for which gotplt_offset is adjusted, because while
2173 that entry goes into .got.plt, its relocation goes into
2174 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2175 processed as part of the runtime lazy .rela.plt relocation).
2176 FIXME: There be literal constants here... */
2177 bfd_vma rela_plt_index
2178 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2179 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
915e5146
HPN
2180
2181 /* Get the offset into the .got table of the entry that corresponds
2182 to this function. Note that we embed knowledge that "incoming"
2183 .got goes after .got.plt in the output without padding (pointer
2184 aligned). However, that knowledge is present in several other
c152c796 2185 places too. */
915e5146
HPN
2186 bfd_vma got_offset
2187 = (has_gotplt
2188 ? gotplt_offset
2189 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2190
2191 /* This symbol has an entry in the procedure linkage table. Set it
2192 up. */
2193
2194 BFD_ASSERT (h->dynindx != -1);
2195
2196 splt = bfd_get_section_by_name (dynobj, ".plt");
2197 sgot = bfd_get_section_by_name (dynobj, ".got");
2198 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2199 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2200 BFD_ASSERT (splt != NULL && sgotplt != NULL
2201 && (! has_gotplt || srela != NULL));
2202
2203 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2204
2205 /* Fill in the entry in the procedure linkage table. */
2206 if (! info->shared)
2207 {
bac23f82
HPN
2208 memcpy (splt->contents + h->plt.offset, plt_entry,
2209 plt_entry_size);
915e5146
HPN
2210
2211 /* We need to enter the absolute address of the GOT entry here. */
2212 bfd_put_32 (output_bfd, got_base + got_offset,
2213 splt->contents + h->plt.offset + plt_off1);
2214 }
2215 else
2216 {
bac23f82
HPN
2217 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2218 plt_entry_size);
915e5146
HPN
2219 bfd_put_32 (output_bfd, got_offset,
2220 splt->contents + h->plt.offset + plt_off1);
2221 }
2222
2223 /* Fill in the plt entry and make a relocation, if this is a "real"
2224 PLT entry. */
2225 if (has_gotplt)
2226 {
bac23f82 2227 /* Fill in the offset to the reloc table. */
915e5146 2228 bfd_put_32 (output_bfd,
0bdf8d40 2229 rela_plt_index * sizeof (Elf32_External_Rela),
915e5146
HPN
2230 splt->contents + h->plt.offset + plt_off2);
2231
2232 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN
2233 bfd_put_32 (output_bfd,
2234 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN
2235 splt->contents + h->plt.offset + plt_off3);
2236
2237 /* Fill in the entry in the global offset table with the address of
2238 the relocating stub. */
2239 bfd_put_32 (output_bfd,
2240 (splt->output_section->vma
2241 + splt->output_offset
2242 + h->plt.offset
bac23f82 2243 + plt_stub_offset),
915e5146
HPN
2244 sgotplt->contents + got_offset);
2245
2246 /* Fill in the entry in the .rela.plt section. */
2247 rela.r_offset = (sgotplt->output_section->vma
2248 + sgotplt->output_offset
2249 + got_offset);
2250 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2251 rela.r_addend = 0;
0bdf8d40 2252 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
947216bf 2253 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2254 }
2255
f5385ebf 2256 if (!h->def_regular)
915e5146
HPN
2257 {
2258 /* Mark the symbol as undefined, rather than as defined in
2259 the .plt section. Leave the value alone. */
2260 sym->st_shndx = SHN_UNDEF;
2261
2262 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2263 know whether resetting the value is significant; if it really
2264 is, rather than a quirk or bug in the sparc port, then I
2265 believe we'd see this elsewhere. */
2266 /* If the symbol is weak, we do need to clear the value.
2267 Otherwise, the PLT entry would provide a definition for
2268 the symbol even if the symbol wasn't defined anywhere,
2269 and so the symbol would never be NULL. */
f5385ebf 2270 if (!h->ref_regular_nonweak)
915e5146
HPN
2271 sym->st_value = 0;
2272 }
2273 }
2274
e4a2175c
HPN
2275 /* For an ordinary program, we emit .got relocs only for symbols that
2276 are in the dynamic-symbols table and are either defined by the
2277 program or are undefined weak symbols, or are function symbols
2278 where we do not output a PLT: the PLT reloc was output above and all
2279 references to the function symbol are redirected to the PLT. */
4d96d128 2280 if (h->got.offset != (bfd_vma) -1
100382c7 2281 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
6849c52f
HPN
2282 && (info->shared
2283 || (h->dynindx != -1
e4a2175c 2284 && h->plt.offset == (bfd_vma) -1
f5385ebf 2285 && !h->def_regular
6849c52f 2286 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN
2287 {
2288 asection *sgot;
2289 asection *srela;
2290 Elf_Internal_Rela rela;
947216bf 2291 bfd_byte *loc;
dc810e39 2292 bfd_byte *where;
915e5146
HPN
2293
2294 /* This symbol has an entry in the global offset table. Set it up. */
2295
2296 sgot = bfd_get_section_by_name (dynobj, ".got");
2297 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2298 BFD_ASSERT (sgot != NULL && srela != NULL);
2299
2300 rela.r_offset = (sgot->output_section->vma
2301 + sgot->output_offset
dc810e39 2302 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN
2303
2304 /* If this is a static link, or it is a -Bsymbolic link and the
2305 symbol is defined locally or was forced to be local because
2306 of a version file, we just want to emit a RELATIVE reloc.
2307 The entry in the global offset table will already have been
2308 initialized in the relocate_section function. */
dc810e39 2309 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN
2310 if (! elf_hash_table (info)->dynamic_sections_created
2311 || (info->shared
2312 && (info->symbolic || h->dynindx == -1)
f5385ebf 2313 && h->def_regular))
915e5146
HPN
2314 {
2315 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 2316 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN
2317 }
2318 else
2319 {
dc810e39 2320 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN
2321 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2322 rela.r_addend = 0;
2323 }
2324
947216bf
AM
2325 loc = srela->contents;
2326 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2327 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2328 }
2329
f5385ebf 2330 if (h->needs_copy)
915e5146
HPN
2331 {
2332 asection *s;
2333 Elf_Internal_Rela rela;
947216bf 2334 bfd_byte *loc;
915e5146
HPN
2335
2336 /* This symbol needs a copy reloc. Set it up. */
2337
2338 BFD_ASSERT (h->dynindx != -1
2339 && (h->root.type == bfd_link_hash_defined
2340 || h->root.type == bfd_link_hash_defweak));
2341
2342 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2343 ".rela.bss");
2344 BFD_ASSERT (s != NULL);
2345
2346 rela.r_offset = (h->root.u.def.value
2347 + h->root.u.def.section->output_section->vma
2348 + h->root.u.def.section->output_offset);
2349 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2350 rela.r_addend = 0;
947216bf
AM
2351 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2352 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2353 }
2354
2355 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2356 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 2357 || h == elf_hash_table (info)->hgot)
915e5146
HPN
2358 sym->st_shndx = SHN_ABS;
2359
b34976b6 2360 return TRUE;
915e5146
HPN
2361}
2362\f
100382c7
HPN
2363/* Finish up the dynamic sections. Do *not* emit relocs here, as their
2364 offsets were changed, as part of -z combreloc handling, from those we
2365 computed. */
915e5146 2366
b34976b6 2367static bfd_boolean
915e5146
HPN
2368elf_cris_finish_dynamic_sections (output_bfd, info)
2369 bfd *output_bfd;
2370 struct bfd_link_info *info;
2371{
2372 bfd *dynobj;
2373 asection *sgot;
2374 asection *sdyn;
2375
2376 dynobj = elf_hash_table (info)->dynobj;
2377
2378 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2379 BFD_ASSERT (sgot != NULL);
2380 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2381
2382 if (elf_hash_table (info)->dynamic_sections_created)
2383 {
2384 asection *splt;
2385 Elf32_External_Dyn *dyncon, *dynconend;
2386
2387 splt = bfd_get_section_by_name (dynobj, ".plt");
2388 BFD_ASSERT (splt != NULL && sdyn != NULL);
2389
2390 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 2391 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN
2392 for (; dyncon < dynconend; dyncon++)
2393 {
2394 Elf_Internal_Dyn dyn;
2395 asection *s;
2396
2397 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2398
2399 switch (dyn.d_tag)
2400 {
2401 default:
2402 break;
2403
2404 case DT_PLTGOT:
2405 s = bfd_get_section_by_name (output_bfd, ".got");
2406 BFD_ASSERT (s != NULL);
2407 dyn.d_un.d_ptr = s->vma;
2408 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2409 break;
2410
2411 case DT_JMPREL:
2412 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2413 if all symbols are found in the .got (not .got.plt). */
2414 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2415 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2416 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2417 break;
2418
2419 case DT_PLTRELSZ:
2420 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2421 if (s == NULL)
2422 dyn.d_un.d_val = 0;
915e5146 2423 else
eea6121a 2424 dyn.d_un.d_val = s->size;
915e5146
HPN
2425 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2426 break;
2427
2428 case DT_RELASZ:
2429 /* The procedure linkage table relocs (DT_JMPREL) should
2430 not be included in the overall relocs (DT_RELA).
2431 Therefore, we override the DT_RELASZ entry here to
2432 make it not include the JMPREL relocs. Since the
2433 linker script arranges for .rela.plt to follow all
2434 other relocation sections, we don't have to worry
2435 about changing the DT_RELA entry. */
2436 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2437 if (s != NULL)
eea6121a 2438 dyn.d_un.d_val -= s->size;
915e5146
HPN
2439 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2440 break;
2441 }
2442 }
2443
2444 /* Fill in the first entry in the procedure linkage table. */
eea6121a 2445 if (splt->size > 0)
915e5146 2446 {
bac23f82
HPN
2447 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2448 {
2449 if (info->shared)
2450 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2451 PLT_ENTRY_SIZE_V32);
2452 else
2453 {
2454 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2455 PLT_ENTRY_SIZE_V32);
2456 bfd_put_32 (output_bfd,
2457 sgot->output_section->vma
2458 + sgot->output_offset + 4,
2459 splt->contents + 4);
2460
2461 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2462 = PLT_ENTRY_SIZE_V32;
2463 }
2464 }
915e5146 2465 else
bac23f82
HPN
2466 {
2467 if (info->shared)
2468 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2469 PLT_ENTRY_SIZE);
2470 else
2471 {
2472 memcpy (splt->contents, elf_cris_plt0_entry,
2473 PLT_ENTRY_SIZE);
2474 bfd_put_32 (output_bfd,
2475 sgot->output_section->vma
2476 + sgot->output_offset + 4,
2477 splt->contents + 6);
2478 bfd_put_32 (output_bfd,
2479 sgot->output_section->vma
2480 + sgot->output_offset + 8,
2481 splt->contents + 14);
2482
2483 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2484 = PLT_ENTRY_SIZE;
2485 }
915e5146
HPN
2486 }
2487 }
2488 }
2489
2490 /* Fill in the first three entries in the global offset table. */
eea6121a 2491 if (sgot->size > 0)
915e5146
HPN
2492 {
2493 if (sdyn == NULL)
2494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2495 else
2496 bfd_put_32 (output_bfd,
2497 sdyn->output_section->vma + sdyn->output_offset,
2498 sgot->contents);
2499 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2500 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2501 }
2502
2503 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2504
b34976b6 2505 return TRUE;
06c15ad7
HPN
2506}
2507\f
2508/* Return the section that should be marked against GC for a given
2509 relocation. */
2510
2511static asection *
07adf181
AM
2512cris_elf_gc_mark_hook (asection *sec,
2513 struct bfd_link_info *info,
2514 Elf_Internal_Rela *rel,
2515 struct elf_link_hash_entry *h,
2516 Elf_Internal_Sym *sym)
06c15ad7 2517{
100382c7 2518 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
06c15ad7 2519 if (h != NULL)
100382c7 2520 switch (r_type)
07adf181
AM
2521 {
2522 case R_CRIS_GNU_VTINHERIT:
2523 case R_CRIS_GNU_VTENTRY:
2524 return NULL;
100382c7
HPN
2525
2526 default:
2527 break;
07adf181 2528 }
06c15ad7 2529
07adf181 2530 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN
2531}
2532
2533/* Update the got entry reference counts for the section being removed. */
2534
b34976b6 2535static bfd_boolean
07adf181
AM
2536cris_elf_gc_sweep_hook (bfd *abfd,
2537 struct bfd_link_info *info,
2538 asection *sec,
2539 const Elf_Internal_Rela *relocs)
06c15ad7 2540{
915e5146
HPN
2541 Elf_Internal_Shdr *symtab_hdr;
2542 struct elf_link_hash_entry **sym_hashes;
2543 bfd_signed_vma *local_got_refcounts;
2544 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN
2545 bfd *dynobj;
2546 asection *sgot;
2547 asection *srelgot;
2548
7dda2462
TG
2549 if (info->relocatable)
2550 return TRUE;
2551
915e5146
HPN
2552 dynobj = elf_hash_table (info)->dynobj;
2553 if (dynobj == NULL)
b34976b6 2554 return TRUE;
915e5146 2555
babfd660
KH
2556 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2557 sym_hashes = elf_sym_hashes (abfd);
2558 local_got_refcounts = elf_local_got_refcounts (abfd);
2559
915e5146
HPN
2560 sgot = bfd_get_section_by_name (dynobj, ".got");
2561 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2562
2563 relend = relocs + sec->reloc_count;
2564 for (rel = relocs; rel < relend; rel++)
2565 {
babfd660 2566 unsigned long r_symndx;
3eb128b2 2567 struct elf_link_hash_entry *h = NULL;
100382c7
HPN
2568 bfd_signed_vma got_element_size = 4;
2569 bfd_signed_vma *specific_refcount = NULL;
2570 enum elf_cris_reloc_type r_type;
3eb128b2
AM
2571
2572 r_symndx = ELF32_R_SYM (rel->r_info);
2573 if (r_symndx >= symtab_hdr->sh_info)
2574 {
2575 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2576 while (h->root.type == bfd_link_hash_indirect
2577 || h->root.type == bfd_link_hash_warning)
2578 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2579 }
babfd660 2580
100382c7
HPN
2581 r_type = ELF32_R_TYPE (rel->r_info);
2582 switch (r_type)
2583 {
2584 case R_CRIS_32_GOT:
2585 case R_CRIS_16_GOT:
2586 case R_CRIS_16_GOTPLT:
2587 case R_CRIS_32_GOTPLT:
2588 specific_refcount = h != NULL
2589 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2590 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2591 break;
2592
2593 case R_CRIS_32_GD:
2594 case R_CRIS_32_GOT_GD:
2595 case R_CRIS_16_GOT_GD:
2596 got_element_size = 8;
2597 specific_refcount = h != NULL
2598 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2599 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2600 break;
2601
75f500d7 2602 case R_CRIS_32_IE:
100382c7
HPN
2603 case R_CRIS_16_GOT_TPREL:
2604 case R_CRIS_32_GOT_TPREL:
2605 specific_refcount = h != NULL
2606 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2607 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2608 break;
2609
2610 default:
2611 break;
2612 }
2613
2614 switch (r_type)
915e5146 2615 {
75f500d7 2616 case R_CRIS_32_IE:
100382c7
HPN
2617 case R_CRIS_32_GD:
2618 case R_CRIS_16_GOT_TPREL:
2619 case R_CRIS_32_GOT_TPREL:
2620 case R_CRIS_32_GOT_GD:
2621 case R_CRIS_16_GOT_GD:
915e5146
HPN
2622 case R_CRIS_16_GOT:
2623 case R_CRIS_32_GOT:
3eb128b2 2624 if (h != NULL)
915e5146 2625 {
100382c7
HPN
2626 /* If the counters are 0 when we got here, we've
2627 miscounted somehow somewhere, an internal error. */
2628 BFD_ASSERT (h->got.refcount > 0);
2629 --h->got.refcount;
2630
2631 BFD_ASSERT (*specific_refcount > 0);
2632 --*specific_refcount;
2633 if (*specific_refcount == 0)
915e5146 2634 {
100382c7
HPN
2635 /* We don't need the .got entry any more. */
2636 sgot->size -= got_element_size;
2637 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2638 }
2639 break;
2640 }
2641
2642 local_got_reloc:
2643 if (local_got_refcounts != NULL)
2644 {
100382c7
HPN
2645 /* If the counters are 0 when we got here, we've
2646 miscounted somehow somewhere, an internal error. */
2647 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2648 --local_got_refcounts[r_symndx];
2649
2650 BFD_ASSERT (*specific_refcount > 0);
2651 --*specific_refcount;
2652 if (*specific_refcount == 0)
915e5146 2653 {
100382c7
HPN
2654 /* We don't need the .got entry any more. */
2655 sgot->size -= got_element_size;
2656 if (info->shared)
2657 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2658 }
2659 }
2660 break;
2661
2662 case R_CRIS_16_GOTPLT:
2663 case R_CRIS_32_GOTPLT:
2664 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2665 if (h == NULL)
915e5146 2666 goto local_got_reloc;
e4a2175c 2667 /* Fall through. */
3eb128b2 2668
915e5146
HPN
2669 case R_CRIS_32_PLT_GOTREL:
2670 /* FIXME: We don't garbage-collect away the .got section. */
2671 if (local_got_refcounts != NULL)
2672 local_got_refcounts[-1]--;
2673 /* Fall through. */
3eb128b2 2674
915e5146
HPN
2675 case R_CRIS_8_PCREL:
2676 case R_CRIS_16_PCREL:
2677 case R_CRIS_32_PCREL:
2678 case R_CRIS_32_PLT_PCREL:
3eb128b2 2679 if (h != NULL)
915e5146 2680 {
0a4787a0
HPN
2681 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2682 && h->plt.refcount > 0)
915e5146
HPN
2683 --h->plt.refcount;
2684 }
2685 break;
2686
100382c7
HPN
2687 case R_CRIS_32_DTPREL:
2688 case R_CRIS_16_DTPREL:
2689 elf_cris_hash_table (info)->dtpmod_refcount--;
2690 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2691 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2692 BFD_ASSERT (local_got_refcounts != NULL);
2693 local_got_refcounts[-1]--;
2694 break;
2695
915e5146
HPN
2696 default:
2697 break;
2698 }
2699 }
2700
b34976b6 2701 return TRUE;
06c15ad7
HPN
2702}
2703
915e5146
HPN
2704/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2705 entry but we found we will not create any. Called when we find we will
4d96d128
HPN
2706 not have any PLT for this symbol, by for example
2707 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2708 or elf_cris_size_dynamic_sections if no dynamic sections will be
2709 created (we're only linking static objects). */
915e5146 2710
b34976b6 2711static bfd_boolean
915e5146
HPN
2712elf_cris_adjust_gotplt_to_got (h, p)
2713 struct elf_cris_link_hash_entry *h;
2714 PTR p;
2715{
2716 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2717
e92d460e
AM
2718 if (h->root.root.type == bfd_link_hash_warning)
2719 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2720
915e5146
HPN
2721 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2722 if (h->gotplt_refcount <= 0)
b34976b6 2723 return TRUE;
915e5146 2724
100382c7 2725 if (h->reg_got_refcount > 0)
915e5146 2726 {
100382c7
HPN
2727 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2728 Probably not necessary at this stage, but keeping them accurate
915e5146
HPN
2729 helps avoiding surprises later. */
2730 h->root.got.refcount += h->gotplt_refcount;
100382c7 2731 h->reg_got_refcount += h->gotplt_refcount;
5e0f5ae3 2732 h->gotplt_refcount = 0;
915e5146
HPN
2733 }
2734 else
2735 {
4d96d128 2736 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM
2737 bfd *dynobj = elf_hash_table (info)->dynobj;
2738 asection *sgot;
2739 asection *srelgot;
2740
2741 BFD_ASSERT (dynobj != NULL);
2742 sgot = bfd_get_section_by_name (dynobj, ".got");
2743 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146 2744
100382c7
HPN
2745 /* Put accurate refcounts there. */
2746 h->root.got.refcount += h->gotplt_refcount;
2747 h->reg_got_refcount = h->gotplt_refcount;
915e5146 2748
5e0f5ae3 2749 h->gotplt_refcount = 0;
915e5146 2750
44aa49bb
HPN
2751 /* We always have a .got and a .rela.got section if there were
2752 GOTPLT relocs in input. */
2753 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN
2754
2755 /* Allocate space in the .got section. */
eea6121a 2756 sgot->size += 4;
915e5146
HPN
2757
2758 /* Allocate relocation space. */
eea6121a 2759 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2760 }
2761
b34976b6 2762 return TRUE;
915e5146
HPN
2763}
2764
2765/* Try to fold PLT entries with GOT entries. There are two cases when we
2766 want to do this:
2767
2768 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN
2769 references, and this is not the executable. We don't have to
2770 generate a PLT at all.
915e5146 2771
e4a2175c
HPN
2772 - When there are both (ordinary) PLT references and GOT references,
2773 and this isn't the executable.
915e5146 2774 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN
2775 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2776 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN
2777
2778 Though the latter case is handled when room for the PLT is allocated,
2779 not here.
2780
e4a2175c
HPN
2781 By folding into the GOT, we may need a round-trip to a PLT in the
2782 executable for calls, a loss in performance. Still, losing a
2783 reloc is a win in size and at least in start-up time.
2784
915e5146
HPN
2785 Note that this function is called before symbols are forced local by
2786 version scripts. The differing cases are handled by
2787 elf_cris_hide_symbol. */
2788
b34976b6 2789static bfd_boolean
915e5146
HPN
2790elf_cris_try_fold_plt_to_got (h, p)
2791 struct elf_cris_link_hash_entry *h;
2792 PTR p;
2793{
2794 struct bfd_link_info *info = (struct bfd_link_info *) p;
2795
2796 /* If there are no GOT references for this symbol, we can't fold any
2797 other reference so there's nothing to do. Likewise if there are no
2798 PLT references; GOTPLT references included. */
2799 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2800 return TRUE;
915e5146
HPN
2801
2802 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2803 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2804
2805 if (h->gotplt_refcount == h->root.plt.refcount)
2806 {
4d96d128 2807 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN
2808 references. Convert PLT to GOT references. */
2809 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2810 return FALSE;
915e5146
HPN
2811
2812 /* Clear the PLT references, so no PLT will be created. */
2813 h->root.plt.offset = (bfd_vma) -1;
2814 }
2815
b34976b6 2816 return TRUE;
915e5146
HPN
2817}
2818
2819/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2820 to use a GOT entry (and create one) rather than requiring a GOTPLT
2821 entry. */
2822
2823static void
e5094212 2824elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN
2825 struct bfd_link_info *info;
2826 struct elf_link_hash_entry *h;
b34976b6 2827 bfd_boolean force_local;
915e5146
HPN
2828{
2829 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2830
e5094212 2831 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN
2832}
2833
2834/* Adjust a symbol defined by a dynamic object and referenced by a
2835 regular object. The current definition is in some section of the
2836 dynamic object, but we're not including those sections. We have to
2837 change the definition to something the rest of the link can
2838 understand. */
2839
b34976b6 2840static bfd_boolean
915e5146
HPN
2841elf_cris_adjust_dynamic_symbol (info, h)
2842 struct bfd_link_info *info;
2843 struct elf_link_hash_entry *h;
2844{
2845 bfd *dynobj;
2846 asection *s;
bac23f82 2847 bfd_size_type plt_entry_size;
915e5146
HPN
2848
2849 dynobj = elf_hash_table (info)->dynobj;
2850
2851 /* Make sure we know what is going on here. */
2852 BFD_ASSERT (dynobj != NULL
f5385ebf 2853 && (h->needs_plt
f6e332e6 2854 || h->u.weakdef != NULL
f5385ebf
AM
2855 || (h->def_dynamic
2856 && h->ref_regular
2857 && !h->def_regular)));
915e5146 2858
bac23f82
HPN
2859 plt_entry_size
2860 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2861 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2862
915e5146
HPN
2863 /* If this is a function, put it in the procedure linkage table. We
2864 will fill in the contents of the procedure linkage table later,
2865 when we know the address of the .got section. */
2866 if (h->type == STT_FUNC
f5385ebf 2867 || h->needs_plt)
915e5146 2868 {
6849c52f
HPN
2869 /* If we link a program (not a DSO), we'll get rid of unnecessary
2870 PLT entries; we point to the actual symbols -- even for pic
2871 relocs, because a program built with -fpic should have the same
2872 result as one built without -fpic, specifically considering weak
2873 symbols.
2874 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2875 if (! info->shared
f5385ebf 2876 && !h->def_dynamic)
915e5146
HPN
2877 {
2878 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN
2879 but the symbol was not defined by a dynamic object. In such
2880 a case, we don't actually need to build a procedure linkage
2881 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2882 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM
2883 BFD_ASSERT (h->needs_plt);
2884 h->needs_plt = 0;
915e5146 2885 h->plt.offset = (bfd_vma) -1;
915e5146
HPN
2886 return
2887 elf_cris_adjust_gotplt_to_got ((struct
2888 elf_cris_link_hash_entry *) h,
2889 info);
2890 }
2891
e4a2175c
HPN
2892 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2893 where a pointer-equivalent symbol was unimportant (i.e. more
2894 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2895 of the PLT. We can't for the executable, because the GOT
2896 entries will point to the PLT there (and be constant). */
2897 if (info->shared
2898 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2899 h, info))
b34976b6 2900 return FALSE;
915e5146
HPN
2901
2902 /* GC or folding may have rendered this entry unused. */
2903 if (h->plt.refcount <= 0)
2904 {
f5385ebf 2905 h->needs_plt = 0;
915e5146 2906 h->plt.offset = (bfd_vma) -1;
b34976b6 2907 return TRUE;
915e5146
HPN
2908 }
2909
2910 /* Make sure this symbol is output as a dynamic symbol. */
2911 if (h->dynindx == -1)
2912 {
c152c796 2913 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2914 return FALSE;
915e5146
HPN
2915 }
2916
2917 s = bfd_get_section_by_name (dynobj, ".plt");
2918 BFD_ASSERT (s != NULL);
2919
2920 /* If this is the first .plt entry, make room for the special
2921 first entry. */
eea6121a 2922 if (s->size == 0)
bac23f82 2923 s->size += plt_entry_size;
915e5146
HPN
2924
2925 /* If this symbol is not defined in a regular file, and we are
2926 not generating a shared library, then set the symbol to this
6849c52f 2927 location in the .plt. */
915e5146 2928 if (!info->shared
f5385ebf 2929 && !h->def_regular)
915e5146
HPN
2930 {
2931 h->root.u.def.section = s;
eea6121a 2932 h->root.u.def.value = s->size;
915e5146
HPN
2933 }
2934
4d96d128
HPN
2935 /* If there's already a GOT entry, use that, not a .got.plt. A
2936 GOT field still has a reference count when we get here; it's
e4a2175c
HPN
2937 not yet changed to an offset. We can't do this for an
2938 executable, because then the reloc associated with the PLT
2939 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2940 this to elf_cris_try_fold_plt_to_got. */
2941 if (info->shared && h->got.refcount > 0)
915e5146
HPN
2942 {
2943 h->got.refcount += h->plt.refcount;
2944
2945 /* Mark the PLT offset to use the GOT entry by setting the low
2946 bit in the plt offset; it is always a multiple of
bac23f82
HPN
2947 plt_entry_size (which is at least a multiple of 2). */
2948 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN
2949
2950 /* Change the PLT refcount to an offset. */
eea6121a 2951 h->plt.offset = s->size;
915e5146
HPN
2952
2953 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2954 that the got entry should be used instead. */
2955 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2956 h)->gotplt_offset == 0);
2957
2958 /* Make room for this entry. */
bac23f82 2959 s->size += plt_entry_size;
915e5146 2960
b34976b6 2961 return TRUE;
915e5146
HPN
2962 }
2963
2964 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2965 h->plt.offset = s->size;
915e5146
HPN
2966
2967 /* Make room for this entry. */
bac23f82 2968 s->size += plt_entry_size;
915e5146
HPN
2969
2970 /* We also need to make an entry in the .got.plt section, which
2971 will be placed in the .got section by the linker script. */
2972 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2973 = elf_cris_hash_table (info)->next_gotplt_entry;
2974 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2975
2976 s = bfd_get_section_by_name (dynobj, ".got.plt");
2977 BFD_ASSERT (s != NULL);
eea6121a 2978 s->size += 4;
915e5146
HPN
2979
2980 /* We also need to make an entry in the .rela.plt section. */
2981
2982 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2983 BFD_ASSERT (s != NULL);
eea6121a 2984 s->size += sizeof (Elf32_External_Rela);
915e5146 2985
b34976b6 2986 return TRUE;
915e5146
HPN
2987 }
2988
2989 /* Reinitialize the plt offset now that it is not used as a reference
2990 count any more. */
2991 h->plt.offset = (bfd_vma) -1;
2992
2993 /* If this is a weak symbol, and there is a real definition, the
2994 processor independent code will have arranged for us to see the
2995 real definition first, and we can just use the same value. */
f6e332e6 2996 if (h->u.weakdef != NULL)
915e5146 2997 {
f6e332e6
AM
2998 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2999 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3000 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3001 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 3002 return TRUE;
915e5146
HPN
3003 }
3004
3005 /* This is a reference to a symbol defined by a dynamic object which
3006 is not a function. */
3007
3008 /* If we are creating a shared library, we must presume that the
3009 only references to the symbol are via the global offset table.
3010 For such cases we need not do anything here; the relocations will
3011 be handled correctly by relocate_section. */
3012 if (info->shared)
b34976b6 3013 return TRUE;
915e5146
HPN
3014
3015 /* If there are no references to this symbol that do not use the
3016 GOT, we don't need to generate a copy reloc. */
f5385ebf 3017 if (!h->non_got_ref)
b34976b6 3018 return TRUE;
915e5146 3019
909272ee
AM
3020 if (h->size == 0)
3021 {
3022 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3023 h->root.root.string);
3024 return TRUE;
3025 }
3026
915e5146
HPN
3027 /* We must allocate the symbol in our .dynbss section, which will
3028 become part of the .bss section of the executable. There will be
3029 an entry for this symbol in the .dynsym section. The dynamic
3030 object will contain position independent code, so all references
3031 from the dynamic object to this symbol will go through the global
3032 offset table. The dynamic linker will use the .dynsym entry to
3033 determine the address it must put in the global offset table, so
3034 both the dynamic object and the regular object will refer to the
3035 same memory location for the variable. */
3036
3037 s = bfd_get_section_by_name (dynobj, ".dynbss");
3038 BFD_ASSERT (s != NULL);
3039
3040 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3041 copy the initial value out of the dynamic object and into the
3042 runtime process image. We need to remember the offset into the
3043 .rela.bss section we are going to use. */
3044 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3045 {
3046 asection *srel;
3047
3048 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3049 BFD_ASSERT (srel != NULL);
eea6121a 3050 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3051 h->needs_copy = 1;
915e5146
HPN
3052 }
3053
027297b7 3054 return _bfd_elf_adjust_dynamic_copy (h, s);
915e5146
HPN
3055}
3056
237bc7f0
HPN
3057/* Adjust our "subclass" elements for an indirect symbol. */
3058
3059static void
3060elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3061 struct elf_link_hash_entry *dir,
3062 struct elf_link_hash_entry *ind)
3063{
3064 struct elf_cris_link_hash_entry *edir, *eind;
3065
3066 edir = (struct elf_cris_link_hash_entry *) dir;
3067 eind = (struct elf_cris_link_hash_entry *) ind;
3068
867ea5fd
HPN
3069 /* Only indirect symbols are replaced; we're not interested in
3070 updating any of EIND's fields for other symbols. */
3071 if (eind->root.root.type != bfd_link_hash_indirect)
451ffe63
HPN
3072 {
3073 /* Still, we need to copy flags for e.g. weak definitions. */
3074 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3075 return;
3076 }
867ea5fd 3077
237bc7f0
HPN
3078 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3079 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3080
3081#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3082#define XMOVE(F) XMOVOPZ (F, +=, 0)
3083 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3084 XMOVE (gotplt_refcount);
3085 XMOVE (gotplt_offset);
3086 XMOVE (reg_got_refcount);
3087 XMOVE (tprel_refcount);
3088 XMOVE (dtp_refcount);
3089#undef XMOVE
3090#undef XMOVOPZ
3091
3092 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3093}
3094
915e5146 3095/* Look through the relocs for a section during the first phase. */
a7c10850 3096
b34976b6 3097static bfd_boolean
06c15ad7
HPN
3098cris_elf_check_relocs (abfd, info, sec, relocs)
3099 bfd *abfd;
3100 struct bfd_link_info *info;
3101 asection *sec;
3102 const Elf_Internal_Rela *relocs;
3103{
915e5146 3104 bfd *dynobj;
06c15ad7 3105 Elf_Internal_Shdr *symtab_hdr;
5582a088 3106 struct elf_link_hash_entry **sym_hashes;
915e5146 3107 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN
3108 const Elf_Internal_Rela *rel;
3109 const Elf_Internal_Rela *rel_end;
915e5146
HPN
3110 asection *sgot;
3111 asection *srelgot;
3112 asection *sreloc;
a7c10850 3113
1049f94e 3114 if (info->relocatable)
b34976b6 3115 return TRUE;
a7c10850 3116
915e5146 3117 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN
3118 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3119 sym_hashes = elf_sym_hashes (abfd);
915e5146
HPN
3120 local_got_refcounts = elf_local_got_refcounts (abfd);
3121
3122 sgot = NULL;
3123 srelgot = NULL;
3124 sreloc = NULL;
3125
06c15ad7
HPN
3126 rel_end = relocs + sec->reloc_count;
3127 for (rel = relocs; rel < rel_end; rel++)
3128 {
3129 struct elf_link_hash_entry *h;
3130 unsigned long r_symndx;
915e5146 3131 enum elf_cris_reloc_type r_type;
100382c7
HPN
3132 bfd_signed_vma got_element_size = 4;
3133 unsigned long r_symndx_lgot = INT_MAX;
a7c10850 3134
06c15ad7
HPN
3135 r_symndx = ELF32_R_SYM (rel->r_info);
3136 if (r_symndx < symtab_hdr->sh_info)
100382c7
HPN
3137 {
3138 h = NULL;
3139 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3140 }
06c15ad7 3141 else
973a3492
L
3142 {
3143 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3144 while (h->root.type == bfd_link_hash_indirect
3145 || h->root.type == bfd_link_hash_warning)
3146 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3147 }
a7c10850 3148
915e5146
HPN
3149 r_type = ELF32_R_TYPE (rel->r_info);
3150
3151 /* Some relocs require linker-created sections; we need to hang them
3152 on the first input bfd we found that contained dynamic relocs. */
3153 switch (r_type)
3154 {
100382c7
HPN
3155 case R_CRIS_16_DTPREL:
3156 case R_CRIS_32_DTPREL:
3157 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3158 entry at index 3. */
3159 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3160 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3161 elf_cris_hash_table (info)->dtpmod_refcount++;
3162 /* Fall through. */
3163
75f500d7 3164 case R_CRIS_32_IE:
100382c7
HPN
3165 case R_CRIS_32_GD:
3166 case R_CRIS_16_GOT_GD:
3167 case R_CRIS_32_GOT_GD:
3168 case R_CRIS_32_GOT_TPREL:
3169 case R_CRIS_16_GOT_TPREL:
915e5146
HPN
3170 case R_CRIS_16_GOT:
3171 case R_CRIS_32_GOT:
3172 case R_CRIS_32_GOTREL:
3173 case R_CRIS_32_PLT_GOTREL:
3174 case R_CRIS_32_PLT_PCREL:
3175 case R_CRIS_16_GOTPLT:
3176 case R_CRIS_32_GOTPLT:
3177 if (dynobj == NULL)
3178 {
3179 elf_hash_table (info)->dynobj = dynobj = abfd;
3180
bac23f82
HPN
3181 /* We could handle this if we can get a handle on the
3182 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3183 that, we must insist on dynobj being a specific mach. */
3184 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3185 {
3186 (*_bfd_error_handler)
3187 (_("%B, section %A:\n v10/v32 compatible object %s"
3188 " must not contain a PIC relocation"),
3189 abfd, sec);
3190 return FALSE;
3191 }
3192
915e5146
HPN
3193 /* Create the .got section, so we can assume it's always
3194 present whenever there's a dynobj. */
3195 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 3196 return FALSE;
915e5146 3197 }
100382c7
HPN
3198
3199 if (sgot == NULL)
3200 sgot = bfd_get_section_by_name (dynobj, ".got");
3201
3202 if (local_got_refcounts == NULL)
3203 {
3204 bfd_size_type amt;
3205
3206 /* We use index local_got_refcounts[-1] to count all
3207 GOT-relative relocations that do not have explicit
3208 GOT entries. */
3209 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3210 amt *= sizeof (bfd_signed_vma);
3211 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3212 if (local_got_refcounts == NULL)
3213 return FALSE;
3214
3215 local_got_refcounts++;
3216 elf_local_got_refcounts (abfd) = local_got_refcounts;
3217 }
915e5146
HPN
3218 break;
3219
3220 default:
3221 break;
3222 }
3223
3224 /* Some relocs require a global offset table (but perhaps not a
3225 specific GOT entry). */
4d96d128 3226 switch (r_type)
915e5146 3227 {
100382c7
HPN
3228 case R_CRIS_16_DTPREL:
3229 case R_CRIS_32_DTPREL:
3230 /* Not requesting .got.rela for an executable: the contents
3231 of the first entry is constant there. For a shared
3232 library, we need .got.rela for the R_CRIS_DTPMOD
3233 relocation at index 3. */
3234 if (!info->shared)
3235 break;
3236 /* Fall through. */
3237
75f500d7 3238 case R_CRIS_32_IE:
100382c7
HPN
3239 case R_CRIS_32_GD:
3240 case R_CRIS_16_GOT_GD:
3241 case R_CRIS_32_GOT_GD:
3242 case R_CRIS_32_GOT_TPREL:
3243 case R_CRIS_16_GOT_TPREL:
3244 /* Fall through. */
3245
44aa49bb
HPN
3246 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3247 entry only for local symbols. Unfortunately, we don't know
3248 until later on if there's a version script that forces the
3249 symbol local. We must have the .rela.got section in place
3250 before we know if the symbol looks global now, so we need
3251 to treat the reloc just like for R_CRIS_16_GOT and
3252 R_CRIS_32_GOT. */
3253 case R_CRIS_16_GOTPLT:
3254 case R_CRIS_32_GOTPLT:
915e5146
HPN
3255 case R_CRIS_16_GOT:
3256 case R_CRIS_32_GOT:
44aa49bb
HPN
3257 if (srelgot == NULL
3258 && (h != NULL || info->shared))
3259 {
3260 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3261 if (srelgot == NULL)
3262 {
3496cb2a
L
3263 srelgot = bfd_make_section_with_flags (dynobj,
3264 ".rela.got",
3265 (SEC_ALLOC
3266 | SEC_LOAD
3267 | SEC_HAS_CONTENTS
3268 | SEC_IN_MEMORY
3269 | SEC_LINKER_CREATED
3270 | SEC_READONLY));
44aa49bb 3271 if (srelgot == NULL
44aa49bb 3272 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 3273 return FALSE;
44aa49bb
HPN
3274 }
3275 }
100382c7 3276 break;
44aa49bb 3277
100382c7
HPN
3278 default:
3279 break;
3280 }
915e5146 3281
100382c7
HPN
3282 /* Warn and error for invalid input. */
3283 switch (r_type)
3284 {
75f500d7 3285 case R_CRIS_32_IE:
100382c7
HPN
3286 case R_CRIS_32_TPREL:
3287 case R_CRIS_16_TPREL:
3288 case R_CRIS_32_GD:
3289 if (info->shared)
915e5146 3290 {
100382c7
HPN
3291 (*_bfd_error_handler)
3292 (_("%B, section %A:\n relocation %s not valid"
3293 " in a shared object;"
3294 " typically an option mixup, recompile with -fPIC"),
3295 abfd,
3296 sec,
3297 cris_elf_howto_table[r_type].name);
3298 /* Don't return FALSE here; we want messages for all of
3299 these and the error behavior is ungraceful
3300 anyway. */
3301 }
3302 default:
3303 break;
3304 }
915e5146 3305
100382c7
HPN
3306 switch (r_type)
3307 {
3308 case R_CRIS_32_GD:
3309 case R_CRIS_16_GOT_GD:
3310 case R_CRIS_32_GOT_GD:
3311 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3312 got_element_size = 8;
3313 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3314 break;
915e5146 3315
100382c7
HPN
3316 case R_CRIS_16_DTPREL:
3317 case R_CRIS_32_DTPREL:
3318 /* These two just request for the constant-index
3319 module-local tls_index-sized GOT entry, which we add
3320 elsewhere. */
915e5146
HPN
3321 break;
3322
75f500d7 3323 case R_CRIS_32_IE:
100382c7
HPN
3324 case R_CRIS_32_GOT_TPREL:
3325 case R_CRIS_16_GOT_TPREL:
3326 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3327
75f500d7 3328 /* Those relocs also require that a DSO is of type
100382c7
HPN
3329 Initial Exec. Like other targets, we don't reset this
3330 flag even if the relocs are GC:ed away. */
3331 if (info->shared)
3332 info->flags |= DF_STATIC_TLS;
3333 break;
3334
3335 /* Let's list the other assembler-generated TLS-relocs too,
3336 just to show that they're not forgotten. */
3337 case R_CRIS_16_TPREL:
3338 case R_CRIS_32_TPREL:
915e5146
HPN
3339 default:
3340 break;
3341 }
3342
4d96d128 3343 switch (r_type)
06c15ad7 3344 {
915e5146
HPN
3345 case R_CRIS_16_GOTPLT:
3346 case R_CRIS_32_GOTPLT:
3347 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3348 entry) is eliminated. We can only do this for a non-local
3349 symbol. */
3350 if (h != NULL)
3351 {
100382c7 3352 elf_cris_hash_entry (h)->gotplt_refcount++;
915e5146
HPN
3353 goto handle_gotplt_reloc;
3354 }
3355 /* If h is NULL then this is a local symbol, and we must make a
3356 GOT entry for it, so handle it like a GOT reloc. */
3357 /* Fall through. */
3358
75f500d7 3359 case R_CRIS_32_IE:
100382c7
HPN
3360 case R_CRIS_32_GD:
3361 case R_CRIS_16_GOT_GD:
3362 case R_CRIS_32_GOT_GD:
3363 case R_CRIS_32_GOT_TPREL:
3364 case R_CRIS_16_GOT_TPREL:
915e5146
HPN
3365 case R_CRIS_16_GOT:
3366 case R_CRIS_32_GOT:
3367 /* This symbol requires a global offset table entry. */
915e5146
HPN
3368 if (h != NULL)
3369 {
51b64d56 3370 if (h->got.refcount == 0)
915e5146 3371 {
915e5146
HPN
3372 /* Make sure this symbol is output as a dynamic symbol. */
3373 if (h->dynindx == -1)
3374 {
c152c796 3375 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3376 return FALSE;
915e5146 3377 }
915e5146 3378 }
100382c7
HPN
3379
3380 /* Update the sum of reloc counts for this symbol. */
51b64d56 3381 h->got.refcount++;
100382c7
HPN
3382
3383 switch (r_type)
3384 {
3385 case R_CRIS_16_GOT:
3386 case R_CRIS_32_GOT:
3387 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3388 {
3389 /* Allocate space in the .got section. */
3390 sgot->size += got_element_size;
3391 /* Allocate relocation space. */
3392 srelgot->size += sizeof (Elf32_External_Rela);
3393 }
3394 elf_cris_hash_entry (h)->reg_got_refcount++;
3395 break;
3396
3397 case R_CRIS_32_GD:
3398 case R_CRIS_16_GOT_GD:
3399 case R_CRIS_32_GOT_GD:
3400 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3401 {
3402 /* Allocate space in the .got section. */
3403 sgot->size += got_element_size;
3404 /* Allocate relocation space. */
3405 srelgot->size += sizeof (Elf32_External_Rela);
3406 }
3407 elf_cris_hash_entry (h)->dtp_refcount++;
3408 break;
3409
75f500d7 3410 case R_CRIS_32_IE:
100382c7
HPN
3411 case R_CRIS_32_GOT_TPREL:
3412 case R_CRIS_16_GOT_TPREL:
3413 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3414 {
3415 /* Allocate space in the .got section. */
3416 sgot->size += got_element_size;
3417 /* Allocate relocation space. */
3418 srelgot->size += sizeof (Elf32_External_Rela);
3419 }
3420 elf_cris_hash_entry (h)->tprel_refcount++;
3421 break;
3422
3423 default:
3424 BFD_FAIL ();
3425 break;
3426 }
915e5146
HPN
3427 }
3428 else
3429 {
3430 /* This is a global offset table entry for a local symbol. */
100382c7 3431 if (local_got_refcounts[r_symndx_lgot] == 0)
915e5146 3432 {
100382c7 3433 sgot->size += got_element_size;
915e5146
HPN
3434 if (info->shared)
3435 {
100382c7
HPN
3436 /* If we are generating a shared object, we need
3437 to output a R_CRIS_RELATIVE reloc so that the
3438 dynamic linker can adjust this GOT entry.
3439 Similarly for non-regular got entries. */
eea6121a 3440 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
3441 }
3442 }
100382c7
HPN
3443 /* Update the reloc-specific count. */
3444 local_got_refcounts[r_symndx_lgot]++;
3445
3446 /* This one is the sum of all the others. */
51b64d56 3447 local_got_refcounts[r_symndx]++;
915e5146
HPN
3448 }
3449 break;
3450
100382c7
HPN
3451 case R_CRIS_16_DTPREL:
3452 case R_CRIS_32_DTPREL:
915e5146
HPN
3453 case R_CRIS_32_GOTREL:
3454 /* This reference requires a global offset table.
3455 FIXME: The actual refcount isn't used currently; the .got
3456 section can't be removed if there were any references in the
3457 input. */
3458 local_got_refcounts[-1]++;
3459 break;
3460
3461 handle_gotplt_reloc:
3462
3463 case R_CRIS_32_PLT_GOTREL:
3464 /* This reference requires a global offset table. */
3465 local_got_refcounts[-1]++;
3466 /* Fall through. */
3467
3468 case R_CRIS_32_PLT_PCREL:
3469 /* This symbol requires a procedure linkage table entry. We
3470 actually build the entry in adjust_dynamic_symbol,
3471 because this might be a case of linking PIC code which is
3472 never referenced by a dynamic object, in which case we
3473 don't need to generate a procedure linkage table entry
3474 after all. */
3475
ada1953e
HPN
3476 /* Beware: if we'd check for visibility of the symbol here
3477 (and not marking the need for a PLT when non-visible), we'd
3478 get into trouble with keeping handling consistent with
3479 regards to relocs found before definition and GOTPLT
3480 handling. Eliminable PLT entries will be dealt with later
3481 anyway. */
3482 if (h == NULL)
915e5146
HPN
3483 continue;
3484
f5385ebf 3485 h->needs_plt = 1;
51b64d56 3486 h->plt.refcount++;
915e5146
HPN
3487 break;
3488
3489 case R_CRIS_8:
3490 case R_CRIS_16:
3491 case R_CRIS_32:
3492 /* Let's help debug shared library creation. Any of these
0d08de41
HPN
3493 relocs *can* be used in shared libs, but pages containing
3494 them cannot be shared, so they're not appropriate for
3495 common use. Don't warn for sections we don't care about,
3496 such as debug sections or non-constant sections. We
3497 can't help tables of (global) function pointers, for
3498 example, though they must be emitted in a (writable) data
3499 section to avoid having impure text sections. */
915e5146
HPN
3500 if (info->shared
3501 && (sec->flags & SEC_ALLOC) != 0
3502 && (sec->flags & SEC_READONLY) != 0)
3503 {
3504 /* FIXME: How do we make this optionally a warning only? */
8f615d07 3505 (*_bfd_error_handler)
bac23f82
HPN
3506 (_("%B, section %A:\n relocation %s should not"
3507 " be used in a shared object; recompile with -fPIC"),
d003868e
AM
3508 abfd,
3509 sec,
8f615d07 3510 cris_elf_howto_table[r_type].name);
915e5146 3511 }
0d08de41
HPN
3512 if (h != NULL)
3513 {
3514 h->non_got_ref = 1;
100382c7 3515
0d08de41
HPN
3516 /* Make sure a plt entry is created for this symbol if it
3517 turns out to be a function defined by a dynamic object. */
3518 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3519 h->plt.refcount++;
3520 }
3521
3522 /* If we are creating a shared library and this is not a local
3523 symbol, we need to copy the reloc into the shared library.
3524 However when linking with -Bsymbolic and this is a global
3525 symbol which is defined in an object we are including in the
3526 link (i.e., DEF_REGULAR is set), then we can resolve the
3527 reloc directly. At this point we have not seen all the input
3528 files, so it is possible that DEF_REGULAR is not set now but
3529 will be set later (it is never cleared). In case of a weak
3530 definition, DEF_REGULAR may be cleared later by a strong
3531 definition in a shared library. We account for that
3532 possibility below by storing information in the relocs_copied
3533 field of the hash table entry. A similar situation occurs
3534 when creating shared libraries and symbol visibility changes
3535 render the symbol local. */
3536
3537 /* No need to do anything if we're not creating a shared object. */
3538 if (! info->shared)
3539 break;
3540
3541 /* We don't need to handle relocs into sections not going into
3542 the "real" output. */
3543 if ((sec->flags & SEC_ALLOC) == 0)
3544 break;
3545
3546 /* We may need to create a reloc section in the dynobj and made room
3547 for this reloc. */
3548 if (sreloc == NULL)
3549 {
3550 sreloc = _bfd_elf_make_dynamic_reloc_section
3551 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3552
3553 if (sreloc == NULL)
3554 return FALSE;
3555 }
3556
3557 if (sec->flags & SEC_READONLY)
3558 info->flags |= DF_TEXTREL;
3559
3560 sreloc->size += sizeof (Elf32_External_Rela);
3561 break;
915e5146
HPN
3562
3563 case R_CRIS_8_PCREL:
3564 case R_CRIS_16_PCREL:
3565 case R_CRIS_32_PCREL:
3566 if (h != NULL)
3567 {
f5385ebf 3568 h->non_got_ref = 1;
915e5146
HPN
3569
3570 /* Make sure a plt entry is created for this symbol if it
3571 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN
3572 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3573 h->plt.refcount++;
915e5146
HPN
3574 }
3575
3576 /* If we are creating a shared library and this is not a local
3577 symbol, we need to copy the reloc into the shared library.
3578 However when linking with -Bsymbolic and this is a global
3579 symbol which is defined in an object we are including in the
3580 link (i.e., DEF_REGULAR is set), then we can resolve the
3581 reloc directly. At this point we have not seen all the input
3582 files, so it is possible that DEF_REGULAR is not set now but
3583 will be set later (it is never cleared). In case of a weak
3584 definition, DEF_REGULAR may be cleared later by a strong
3585 definition in a shared library. We account for that
3586 possibility below by storing information in the relocs_copied
3587 field of the hash table entry. A similar situation occurs
3588 when creating shared libraries and symbol visibility changes
3589 render the symbol local. */
3590
3591 /* No need to do anything if we're not creating a shared object. */
3592 if (! info->shared)
3593 break;
3594
3595 /* We don't need to handle relocs into sections not going into
3596 the "real" output. */
3597 if ((sec->flags & SEC_ALLOC) == 0)
3598 break;
3599
0d08de41
HPN
3600 /* If the symbol is local, then we know already we can
3601 eliminate the reloc. */
3602 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3603 break;
bac23f82 3604
0d08de41
HPN
3605 /* If this is with -Bsymbolic and the symbol isn't weak, and
3606 is defined by an ordinary object (the ones we include in
3607 this shared library) then we can also eliminate the
3608 reloc. See comment above for more eliminable cases which
3609 we can't identify at this time. */
3610 if (info->symbolic
3611 && h->root.type != bfd_link_hash_defweak
3612 && h->def_regular)
3613 break;
915e5146 3614
83bac4b0
NC
3615 /* We may need to create a reloc section in the dynobj and made room
3616 for this reloc. */
915e5146
HPN
3617 if (sreloc == NULL)
3618 {
83bac4b0
NC
3619 sreloc = _bfd_elf_make_dynamic_reloc_section
3620 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
915e5146 3621
83bac4b0 3622 if (sreloc == NULL)
b34976b6 3623 return FALSE;
915e5146
HPN
3624 }
3625
eea6121a 3626 sreloc->size += sizeof (Elf32_External_Rela);
915e5146 3627
0d08de41
HPN
3628 /* We count the number of PC relative relocations we have
3629 entered for this symbol, so that we can discard them
3630 again if the symbol is later defined by a regular object.
3631 We know that h is really a pointer to an
915e5146 3632 elf_cris_link_hash_entry. */
0d08de41
HPN
3633 {
3634 struct elf_cris_link_hash_entry *eh;
3635 struct elf_cris_pcrel_relocs_copied *p;
915e5146 3636
0d08de41 3637 eh = elf_cris_hash_entry (h);
915e5146 3638
0d08de41
HPN
3639 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3640 if (p->section == sreloc)
3641 break;
915e5146 3642
0d08de41
HPN
3643 if (p == NULL)
3644 {
3645 p = ((struct elf_cris_pcrel_relocs_copied *)
3646 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3647 if (p == NULL)
3648 return FALSE;
3649 p->next = eh->pcrel_relocs_copied;
3650 eh->pcrel_relocs_copied = p;
3651 p->section = sreloc;
3652 p->count = 0;
3653 p->r_type = r_type;
3654 }
915e5146 3655
0d08de41
HPN
3656 ++p->count;
3657 }
915e5146
HPN
3658 break;
3659
06c15ad7
HPN
3660 /* This relocation describes the C++ object vtable hierarchy.
3661 Reconstruct it for later use during GC. */
3662 case R_CRIS_GNU_VTINHERIT:
c152c796 3663 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3664 return FALSE;
06c15ad7 3665 break;
a7c10850 3666
06c15ad7
HPN
3667 /* This relocation describes which C++ vtable entries are actually
3668 used. Record for later use during GC. */
3669 case R_CRIS_GNU_VTENTRY:
d17e0c6e
JB
3670 BFD_ASSERT (h != NULL);
3671 if (h != NULL
3672 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3673 return FALSE;
06c15ad7 3674 break;
4d96d128 3675
100382c7
HPN
3676 case R_CRIS_16_TPREL:
3677 case R_CRIS_32_TPREL:
3678 /* Already warned above, when necessary. */
3679 break;
3680
4d96d128
HPN
3681 default:
3682 /* Other relocs do not appear here. */
3683 bfd_set_error (bfd_error_bad_value);
b34976b6 3684 return FALSE;
06c15ad7
HPN
3685 }
3686 }
a7c10850 3687
b34976b6 3688 return TRUE;
06c15ad7 3689}
4da81684 3690
915e5146
HPN
3691/* Set the sizes of the dynamic sections. */
3692
b34976b6 3693static bfd_boolean
915e5146 3694elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 3695 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN
3696 struct bfd_link_info *info;
3697{
3698 bfd *dynobj;
3699 asection *s;
b34976b6
AM
3700 bfd_boolean plt;
3701 bfd_boolean relocs;
915e5146
HPN
3702
3703 dynobj = elf_hash_table (info)->dynobj;
3704 BFD_ASSERT (dynobj != NULL);
3705
3706 if (elf_hash_table (info)->dynamic_sections_created)
3707 {
3708 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3709 if (info->executable)
915e5146
HPN
3710 {
3711 s = bfd_get_section_by_name (dynobj, ".interp");
3712 BFD_ASSERT (s != NULL);
eea6121a 3713 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN
3714 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3715 }
3716 }
3717 else
3718 {
3719 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3720 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3721 elf_cris_adjust_gotplt_to_got,
3722 (PTR) info);
3723
3724 /* We may have created entries in the .rela.got section.
3725 However, if we are not creating the dynamic sections, we will
3726 not actually use these entries. Reset the size of .rela.got,
3727 which will cause it to get stripped from the output file
3728 below. */
3729 s = bfd_get_section_by_name (dynobj, ".rela.got");
3730 if (s != NULL)
eea6121a 3731 s->size = 0;
915e5146
HPN
3732 }
3733
3734 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3735 relative relocs against symbols defined in a regular object. We
3736 allocated space for them in the check_relocs routine, but we will not
3737 fill them in in the relocate_section routine. We also discard space
3738 for relocs that have become for local symbols due to symbol
4d96d128
HPN
3739 visibility changes. For programs, we discard space for relocs for
3740 symbols not referenced by any dynamic object. */
915e5146
HPN
3741 if (info->shared)
3742 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN
3743 elf_cris_discard_excess_dso_dynamics,
3744 (PTR) info);
3745 else
3746 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3747 elf_cris_discard_excess_program_dynamics,
915e5146
HPN
3748 (PTR) info);
3749
3750 /* The check_relocs and adjust_dynamic_symbol entry points have
3751 determined the sizes of the various dynamic sections. Allocate
3752 memory for them. */
b34976b6
AM
3753 plt = FALSE;
3754 relocs = FALSE;
915e5146
HPN
3755 for (s = dynobj->sections; s != NULL; s = s->next)
3756 {
3757 const char *name;
915e5146
HPN
3758
3759 if ((s->flags & SEC_LINKER_CREATED) == 0)
3760 continue;
3761
3762 /* It's OK to base decisions on the section name, because none
3763 of the dynobj section names depend upon the input files. */
3764 name = bfd_get_section_name (dynobj, s);
3765
915e5146
HPN
3766 if (strcmp (name, ".plt") == 0)
3767 {
c456f082
AM
3768 /* Remember whether there is a PLT. */
3769 plt = s->size != 0;
915e5146 3770 }
100382c7
HPN
3771 else if (strcmp (name, ".got.plt") == 0)
3772 {
3773 /* The .got.plt contains the .got header as well as the
3774 actual .got.plt contents. The .got header may contain a
3775 R_CRIS_DTPMOD entry at index 3. */
3776 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3777 ? 8 : 0;
3778 }
0112cd26 3779 else if (CONST_STRNEQ (name, ".rela"))
915e5146 3780 {
100382c7
HPN
3781 if (strcmp (name, ".rela.got") == 0
3782 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3783 && info->shared)
3784 s->size += sizeof (Elf32_External_Rela);
3785
c456f082 3786 if (s->size != 0)
915e5146 3787 {
915e5146
HPN
3788 /* Remember whether there are any reloc sections other
3789 than .rela.plt. */
3790 if (strcmp (name, ".rela.plt") != 0)
b34976b6 3791 relocs = TRUE;
915e5146 3792
915e5146
HPN
3793 /* We use the reloc_count field as a counter if we need
3794 to copy relocs into the output file. */
3795 s->reloc_count = 0;
3796 }
3797 }
0112cd26 3798 else if (! CONST_STRNEQ (name, ".got")
c456f082 3799 && strcmp (name, ".dynbss") != 0)
915e5146
HPN
3800 {
3801 /* It's not one of our sections, so don't allocate space. */
3802 continue;
3803 }
3804
c456f082 3805 if (s->size == 0)
915e5146 3806 {
c456f082
AM
3807 /* If we don't need this section, strip it from the
3808 output file. This is mostly to handle .rela.bss and
3809 .rela.plt. We must create both sections in
3810 create_dynamic_sections, because they must be created
3811 before the linker maps input sections to output
3812 sections. The linker does that before
3813 adjust_dynamic_symbol is called, and it is that
3814 function which decides whether anything needs to go
3815 into these sections. */
8423293d 3816 s->flags |= SEC_EXCLUDE;
915e5146
HPN
3817 continue;
3818 }
3819
c456f082
AM
3820 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3821 continue;
3822
915e5146
HPN
3823 /* Allocate memory for the section contents. We use bfd_zalloc here
3824 in case unused entries are not reclaimed before the section's
3825 contents are written out. This should not happen, but this way
3826 if it does, we will not write out garbage. For reloc sections,
3827 this will make entries have the type R_CRIS_NONE. */
eea6121a 3828 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3829 if (s->contents == NULL)
b34976b6 3830 return FALSE;
915e5146
HPN
3831 }
3832
3833 if (elf_hash_table (info)->dynamic_sections_created)
3834 {
3835 /* Add some entries to the .dynamic section. We fill in the
3836 values later, in elf_cris_finish_dynamic_sections, but we
3837 must add the entries now so that we get the correct size for
3838 the .dynamic section. The DT_DEBUG entry is filled in by the
3839 dynamic linker and used by the debugger. */
dc810e39 3840#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3841 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3842
915e5146
HPN
3843 if (!info->shared)
3844 {
dc810e39 3845 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3846 return FALSE;
915e5146
HPN
3847 }
3848
3849 if (plt)
3850 {
dc810e39
AM
3851 if (!add_dynamic_entry (DT_PLTGOT, 0)
3852 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3853 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3854 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3855 return FALSE;
915e5146
HPN
3856 }
3857
3858 if (relocs)
3859 {
dc810e39
AM
3860 if (!add_dynamic_entry (DT_RELA, 0)
3861 || !add_dynamic_entry (DT_RELASZ, 0)
3862 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3863 return FALSE;
915e5146
HPN
3864 }
3865
99e4ae17 3866 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3867 {
dc810e39 3868 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3869 return FALSE;
915e5146
HPN
3870 info->flags |= DF_TEXTREL;
3871 }
3872 }
dc810e39 3873#undef add_dynamic_entry
915e5146 3874
b34976b6 3875 return TRUE;
915e5146
HPN
3876}
3877
3878/* This function is called via elf_cris_link_hash_traverse if we are
3879 creating a shared object. In the -Bsymbolic case, it discards the
3880 space allocated to copy PC relative relocs against symbols which
3881 are defined in regular objects. For the normal non-symbolic case,
3882 we also discard space for relocs that have become local due to
3883 symbol visibility changes. We allocated space for them in the
3884 check_relocs routine, but we won't fill them in in the
3885 relocate_section routine. */
3886
b34976b6 3887static bfd_boolean
4d96d128 3888elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN
3889 struct elf_cris_link_hash_entry *h;
3890 PTR inf;
3891{
3892 struct elf_cris_pcrel_relocs_copied *s;
3893 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3894
e92d460e
AM
3895 if (h->root.root.type == bfd_link_hash_warning)
3896 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3897
915e5146
HPN
3898 /* If a symbol has been forced local or we have found a regular
3899 definition for the symbolic link case, then we won't be needing
3900 any relocs. */
f5385ebf
AM
3901 if (h->root.def_regular
3902 && (h->root.forced_local
915e5146
HPN
3903 || info->symbolic))
3904 {
3905 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3906 s->section->size -= s->count * sizeof (Elf32_External_Rela);
0d08de41
HPN
3907
3908 return TRUE;
3909 }
3910
3911 /* If we have accounted for PC-relative relocs for read-only
3912 sections, now is the time to warn for them. We can't do it in
3913 cris_elf_check_relocs, because we don't know the status of all
3914 symbols at that time (and it's common to force symbols local
3915 late). */
3916
3917 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3918 {
3919 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3920
3921 /* FIXME: How do we make this optionally a warning only? */
3922 (*_bfd_error_handler)
3923 (_("%B, section `%A', to symbol `%s':\n"
3924 " relocation %s should not be used"
3925 " in a shared object; recompile with -fPIC"),
3926 s->section->owner,
3927 s->section,
3928 h->root.root.root.string,
3929 cris_elf_howto_table[s->r_type].name);
3930
3931 info->flags |= DF_TEXTREL;
4d96d128
HPN
3932 }
3933
b34976b6 3934 return TRUE;
4d96d128
HPN
3935}
3936
3937/* This function is called via elf_cris_link_hash_traverse if we are *not*
3938 creating a shared object. We discard space for relocs for symbols put
3939 in the .got, but which we found we do not have to resolve at run-time. */
3940
b34976b6 3941static bfd_boolean
4d96d128
HPN
3942elf_cris_discard_excess_program_dynamics (h, inf)
3943 struct elf_cris_link_hash_entry *h;
3944 PTR inf;
3945{
3946 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3947
e92d460e
AM
3948 if (h->root.root.type == bfd_link_hash_warning)
3949 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3950
4d96d128
HPN
3951 /* If we're not creating a shared library and have a symbol which is
3952 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN
3953 (or rather, not defined by a DSO) then lose the reloc for the .got
3954 (don't allocate room for it). Likewise for relocs for something
3955 for which we create a PLT. */
f5385ebf 3956 if (!h->root.def_dynamic
e4a2175c 3957 || h->root.plt.refcount > 0)
4d96d128 3958 {
100382c7 3959 if (h->reg_got_refcount > 0
4d96d128
HPN
3960 /* The size of this section is only valid and in sync with the
3961 various reference counts if we do dynamic; don't decrement it
3962 otherwise. */
3963 && elf_hash_table (info)->dynamic_sections_created)
3964 {
3965 bfd *dynobj = elf_hash_table (info)->dynobj;
3966 asection *srelgot;
3967
3968 BFD_ASSERT (dynobj != NULL);
99c79b2e 3969
4d96d128
HPN
3970 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3971
3972 BFD_ASSERT (srelgot != NULL);
3973
eea6121a 3974 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN
3975 }
3976
3977 /* If the locally-defined symbol isn't used by a DSO, then we don't
3978 have to export it as a dynamic symbol. This was already done for
3979 functions; doing this for all symbols would presumably not
e5dfef09
HPN
3980 introduce new problems. Of course we don't do this if we're
3981 exporting all dynamic symbols. */
0741c7be 3982 if (! info->export_dynamic
77cfaee6 3983 && h->root.dynindx != -1
f5385ebf
AM
3984 && !h->root.def_dynamic
3985 && !h->root.ref_dynamic)
e5dfef09
HPN
3986 {
3987 h->root.dynindx = -1;
3988 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3989 h->root.dynstr_index);
3990 }
915e5146
HPN
3991 }
3992
b34976b6 3993 return TRUE;
915e5146
HPN
3994}
3995
3996/* Reject a file depending on presence and expectation of prefixed
3997 underscores on symbols. */
4da81684 3998
b34976b6 3999static bfd_boolean
4da81684
HPN
4000cris_elf_object_p (abfd)
4001 bfd *abfd;
4002{
bac23f82
HPN
4003 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4004 return FALSE;
4005
4da81684
HPN
4006 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4007 return (bfd_get_symbol_leading_char (abfd) == '_');
4008 else
4009 return (bfd_get_symbol_leading_char (abfd) == 0);
4010}
4011
bac23f82
HPN
4012/* Mark presence or absence of leading underscore. Set machine type
4013 flags from mach type. */
4da81684
HPN
4014
4015static void
4016cris_elf_final_write_processing (abfd, linker)
4017 bfd *abfd;
b34976b6 4018 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 4019{
bac23f82
HPN
4020 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4021
4022 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 4023 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN
4024 e_flags |= EF_CRIS_UNDERSCORE;
4025
4026 switch (bfd_get_mach (abfd))
4027 {
4028 case bfd_mach_cris_v0_v10:
4029 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4030 break;
4031
4032 case bfd_mach_cris_v10_v32:
4033 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4034 break;
4035
4036 case bfd_mach_cris_v32:
4037 e_flags |= EF_CRIS_VARIANT_V32;
4038 break;
4039
4040 default:
4041 _bfd_abort (__FILE__, __LINE__,
4042 _("Unexpected machine number"));
4043 }
4044
4045 elf_elfheader (abfd)->e_flags = e_flags;
4046}
4047
4048/* Set the mach type from e_flags value. */
4049
4050static bfd_boolean
4051cris_elf_set_mach_from_flags (abfd, flags)
4052 bfd *abfd;
4053 unsigned long flags;
4054{
4055 switch (flags & EF_CRIS_VARIANT_MASK)
4056 {
4057 case EF_CRIS_VARIANT_ANY_V0_V10:
4058 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4059 break;
4060
4061 case EF_CRIS_VARIANT_V32:
4062 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4063 break;
4064
4065 case EF_CRIS_VARIANT_COMMON_V10_V32:
4066 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4067 break;
4068
4069 default:
4070 /* Since we don't recognize them, we obviously can't support them
4071 with this code; we'd have to require that all future handling
4072 would be optional. */
4073 bfd_set_error (bfd_error_wrong_format);
4074 return FALSE;
4075 }
4076
4077 return TRUE;
4da81684
HPN
4078}
4079
4080/* Display the flags field. */
4081
b34976b6 4082static bfd_boolean
4da81684
HPN
4083cris_elf_print_private_bfd_data (abfd, ptr)
4084 bfd *abfd;
4085 PTR ptr;
4086{
4087 FILE *file = (FILE *) ptr;
4088
f12123c0 4089 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN
4090
4091 _bfd_elf_print_private_bfd_data (abfd, ptr);
4092
4093 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4094
4095 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4096 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN
4097 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4098 == EF_CRIS_VARIANT_COMMON_V10_V32)
4099 fprintf (file, _(" [v10 and v32]"));
4100 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4101 == EF_CRIS_VARIANT_V32)
4102 fprintf (file, _(" [v32]"));
4da81684
HPN
4103
4104 fputc ('\n', file);
b34976b6 4105 return TRUE;
4da81684
HPN
4106}
4107
4108/* Don't mix files with and without a leading underscore. */
4109
b34976b6 4110static bfd_boolean
4da81684
HPN
4111cris_elf_merge_private_bfd_data (ibfd, obfd)
4112 bfd *ibfd;
4113 bfd *obfd;
4114{
bac23f82 4115 int imach, omach;
4da81684 4116
82e51918 4117 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4118 return FALSE;
4da81684
HPN
4119
4120 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4121 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4122 return TRUE;
4da81684 4123
bac23f82
HPN
4124 imach = bfd_get_mach (ibfd);
4125
4da81684
HPN
4126 if (! elf_flags_init (obfd))
4127 {
4128 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 4129 elf_flags_init (obfd) = TRUE;
4da81684 4130
bac23f82
HPN
4131 /* We ignore the linker-set mach, and instead set it according to
4132 the first input file. This would also happen if we could
4133 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4134 This allows us to keep the same linker config across
4135 cris(v0..v10) and crisv32. The drawback is that we can't force
4136 the output type, which might be a sane thing to do for a
4137 v10+v32 compatibility object. */
4138 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4139 return FALSE;
4da81684
HPN
4140 }
4141
bac23f82
HPN
4142 if (bfd_get_symbol_leading_char (ibfd)
4143 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN
4144 {
4145 (*_bfd_error_handler)
bac23f82 4146 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM
4147 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4148 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4149 ibfd);
4da81684 4150 bfd_set_error (bfd_error_bad_value);
b34976b6 4151 return FALSE;
4da81684
HPN
4152 }
4153
bac23f82
HPN
4154 omach = bfd_get_mach (obfd);
4155
4156 if (imach != omach)
4157 {
4158 /* We can get an incompatible combination only if either is
4159 bfd_mach_cris_v32, and the other one isn't compatible. */
4160 if ((imach == bfd_mach_cris_v32
4161 && omach != bfd_mach_cris_v10_v32)
4162 || (omach == bfd_mach_cris_v32
4163 && imach != bfd_mach_cris_v10_v32))
4164 {
4165 (*_bfd_error_handler)
4166 ((imach == bfd_mach_cris_v32)
4167 ? _("%B contains CRIS v32 code, incompatible"
4168 " with previous objects")
4169 : _("%B contains non-CRIS-v32 code, incompatible"
4170 " with previous objects"),
4171 ibfd);
4172 bfd_set_error (bfd_error_bad_value);
4173 return FALSE;
4174 }
4175
4176 /* We don't have to check the case where the input is compatible
4177 with v10 and v32, because the output is already known to be set
4178 to the other (compatible) mach. */
4179 if (omach == bfd_mach_cris_v10_v32
4180 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4181 return FALSE;
4182 }
4183
b34976b6 4184 return TRUE;
4da81684 4185}
99e4ae17 4186
bac23f82
HPN
4187/* Do side-effects of e_flags copying to obfd. */
4188
4189static bfd_boolean
4190cris_elf_copy_private_bfd_data (ibfd, obfd)
4191 bfd *ibfd;
4192 bfd *obfd;
4193{
4194 /* Call the base function. */
4195 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4196 return FALSE;
4197
4198 /* If output is big-endian for some obscure reason, stop here. */
4199 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4200 return FALSE;
4201
4202 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4203 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4204 return TRUE;
4205
4206 /* Do what we really came here for. */
4207 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4208}
99e4ae17
AJ
4209
4210static enum elf_reloc_type_class
f51e552e
AM
4211elf_cris_reloc_type_class (rela)
4212 const Elf_Internal_Rela *rela;
99e4ae17 4213{
100382c7
HPN
4214 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4215 switch (r_type)
99e4ae17
AJ
4216 {
4217 case R_CRIS_RELATIVE:
4218 return reloc_class_relative;
4219 case R_CRIS_JUMP_SLOT:
4220 return reloc_class_plt;
4221 case R_CRIS_COPY:
4222 return reloc_class_copy;
4223 default:
4224 return reloc_class_normal;
4225 }
4226}
100382c7
HPN
4227
4228/* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4229 two GOT entries from three types with two different sizes. We handle
4230 it as a single entry, so we can use the regular offset-calculation
4231 machinery. */
4232
4233static bfd_vma
4234elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4235 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4236 struct elf_link_hash_entry *hr,
4237 bfd *ibfd,
4238 unsigned long symndx)
4239{
4240 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
100382c7
HPN
4241 bfd_vma eltsiz = 0;
4242
4243 /* We may have one regular GOT entry or up to two TLS GOT
4244 entries. */
4245 if (h == NULL)
4246 {
b2e254f9 4247 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
100382c7
HPN
4248 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4249
4250 BFD_ASSERT (local_got_refcounts != NULL);
4251
4252 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4253 {
4254 /* We can't have a variable referred to both as a regular
4255 variable and through TLS relocs. */
4256 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4257 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4258 return 4;
4259 }
4260
4261 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4262 eltsiz += 8;
4263
4264 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4265 eltsiz += 4;
4266 }
4267 else
4268 {
4269 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4270 if (hh->reg_got_refcount > 0)
4271 {
4272 /* The actual error-on-input is emitted elsewhere. */
4273 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4274 return 4;
4275 }
4276
4277 if (hh->dtp_refcount > 0)
4278 eltsiz += 8;
4279
4280 if (hh->tprel_refcount > 0)
4281 eltsiz += 4;
4282 }
4283
b2e254f9
HPN
4284 /* We're only called when h->got.refcount is non-zero, so we must
4285 have a non-zero size. */
4286 BFD_ASSERT (eltsiz != 0);
100382c7
HPN
4287 return eltsiz;
4288}
06c15ad7
HPN
4289\f
4290#define ELF_ARCH bfd_arch_cris
4291#define ELF_MACHINE_CODE EM_CRIS
4292#define ELF_MAXPAGESIZE 0x2000
4293
4294#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4295#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 4296#define elf_symbol_leading_char 0
06c15ad7
HPN
4297
4298#define elf_info_to_howto_rel NULL
4299#define elf_info_to_howto cris_info_to_howto_rela
4300#define elf_backend_relocate_section cris_elf_relocate_section
4301#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4302#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4303#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN
4304#define elf_backend_grok_prstatus cris_elf_grok_prstatus
4305#define elf_backend_grok_psinfo cris_elf_grok_psinfo
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HPN
4306
4307#define elf_backend_can_gc_sections 1
51b64d56 4308#define elf_backend_can_refcount 1
06c15ad7 4309
4da81684
HPN
4310#define elf_backend_object_p cris_elf_object_p
4311#define elf_backend_final_write_processing \
4312 cris_elf_final_write_processing
4313#define bfd_elf32_bfd_print_private_bfd_data \
4314 cris_elf_print_private_bfd_data
4315#define bfd_elf32_bfd_merge_private_bfd_data \
4316 cris_elf_merge_private_bfd_data
bac23f82
HPN
4317#define bfd_elf32_bfd_copy_private_bfd_data \
4318 cris_elf_copy_private_bfd_data
4da81684 4319
06c15ad7 4320#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
157090f7 4321#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
06c15ad7 4322
915e5146
HPN
4323#define bfd_elf32_bfd_link_hash_table_create \
4324 elf_cris_link_hash_table_create
4325#define elf_backend_adjust_dynamic_symbol \
4326 elf_cris_adjust_dynamic_symbol
237bc7f0
HPN
4327#define elf_backend_copy_indirect_symbol \
4328 elf_cris_copy_indirect_symbol
915e5146
HPN
4329#define elf_backend_size_dynamic_sections \
4330 elf_cris_size_dynamic_sections
74541ad4 4331#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN
4332#define elf_backend_finish_dynamic_symbol \
4333 elf_cris_finish_dynamic_symbol
4334#define elf_backend_finish_dynamic_sections \
4335 elf_cris_finish_dynamic_sections
4336#define elf_backend_create_dynamic_sections \
4337 _bfd_elf_create_dynamic_sections
4338#define bfd_elf32_bfd_final_link \
c152c796 4339 bfd_elf_gc_common_final_link
915e5146 4340#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 4341#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN
4342
4343#define elf_backend_want_got_plt 1
4344#define elf_backend_plt_readonly 1
4345#define elf_backend_want_plt_sym 0
4346#define elf_backend_got_header_size 12
100382c7 4347#define elf_backend_got_elt_size elf_cris_got_elt_size
915e5146 4348
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HPN
4349/* Later, we my want to optimize RELA entries into REL entries for dynamic
4350 linking and libraries (if it's a win of any significance). Until then,
4351 take the easy route. */
4352#define elf_backend_may_use_rel_p 0
4353#define elf_backend_may_use_rela_p 1
f0fe0e16 4354#define elf_backend_rela_normal 1
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4355
4356#include "elf32-target.h"
4da81684 4357
4da81684
HPN
4358#undef TARGET_LITTLE_SYM
4359#undef TARGET_LITTLE_NAME
4360#undef elf_symbol_leading_char
4361
4362#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4363#define TARGET_LITTLE_NAME "elf32-us-cris"
4364#define elf_symbol_leading_char '_'
16cecee5
L
4365#undef elf32_bed
4366#define elf32_bed elf32_us_cris_bed
4da81684
HPN
4367
4368#include "elf32-target.h"
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