* ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-22.d,
[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
1690 relocation. */
1691 relocation -= elf_hash_table (info)->tls_sec == NULL
1692 ? 0 : elf_hash_table (info)->tls_sec->vma;
1693 break;
1694
1695 case R_CRIS_32_GD:
1696 if (info->shared)
1697 {
1698 bfd_set_error (bfd_error_invalid_operation);
1699
1700 /* We've already informed in cris_elf_check_relocs that
1701 this is an error. */
1702 return FALSE;
1703 }
1704 /* Fall through. */
1705
1706 case R_CRIS_16_GOT_GD:
1707 case R_CRIS_32_GOT_GD:
1708 if (rel->r_addend != 0)
1709 {
1710 /* We can't do anything for a relocation which is against a
1711 symbol *plus offset*. The GOT holds relocations for
1712 symbols. Make this an error; the compiler isn't allowed
1713 to pass us these kinds of things. */
1714 (*_bfd_error_handler)
1715 (_("%B, section %A: relocation %s with non-zero addend %d"
1716 " against symbol `%s'"),
1717 input_bfd,
1718 input_section,
1719 cris_elf_howto_table[r_type].name,
1720 rel->r_addend,
1721 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1722
1723 bfd_set_error (bfd_error_bad_value);
1724 return FALSE;
1725 }
1726
1727 if (!info->shared && (h == NULL || h->def_regular))
1728 {
1729 /* Known contents of the GOT. */
1730 bfd_vma off;
1731
1732 /* The symbol is defined in the program, so just write
1bc86aea 1733 (1, -prog_tls_size+known_tpoffset) into the GOT. */
100382c7 1734 relocation -= elf_hash_table (info)->tls_sec->vma;
1bc86aea 1735 relocation -= elf_hash_table (info)->tls_sec->size;
100382c7
HPN
1736
1737 if (h != NULL)
1738 {
1739 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1740 ? h->got.offset + 4 : h->got.offset;
1741 }
1742 else
1743 {
1744 off = local_got_offsets[r_symndx];
1745 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1746 off += 4;
1747 }
1748
1749 /* We use bit 1 of the offset as a flag for GOT entry with
1750 the R_CRIS_DTP reloc, setting it when we've emitted the
1751 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1752 relocs. */
1753 if ((off & 2) == 0)
1754 {
1755 off &= ~3;
1756
1757 if (h != NULL)
1758 h->got.offset |= 2;
1759 else
1760 local_got_offsets[r_symndx] |= 2;
1761
1762 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1763 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1764 }
1765 else
1766 off &= ~3;
1767
1768 relocation = sgot->output_offset + off
1769 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1770 }
1771 else
1772 {
1773 /* Not all parts of the GOT entry are known; emit a real
1774 relocation. */
1775 bfd_vma off;
1776
1777 if (h != NULL)
1778 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1779 ? h->got.offset + 4 : h->got.offset;
1780 else
1781 {
1782 off = local_got_offsets[r_symndx];
1783 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1784 off += 4;
1785 }
1786
1787 /* See above re bit 1 and bit 0 usage. */
1788 if ((off & 2) == 0)
1789 {
1790 Elf_Internal_Rela outrel;
1791 bfd_byte *loc;
1792
1793 off &= ~3;
1794
1795 if (h != NULL)
1796 h->got.offset |= 2;
1797 else
1798 local_got_offsets[r_symndx] |= 2;
1799
1800 /* Clear the target contents of the GOT (just as a
1801 gesture; it's already cleared on allocation): this
1802 relocation is not like the other dynrelocs. */
1803 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1804 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1805
1806 if (srelgot == NULL)
1807 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1808 BFD_ASSERT (srelgot != NULL);
1809
1810 if (h != NULL && h->dynindx != -1)
1811 {
1812 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1813 relocation = 0;
1814 }
1815 else
1816 {
1817 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1818
1819 /* NULL if we had an error. */
1820 relocation -= elf_hash_table (info)->tls_sec == NULL
1821 ? 0 : elf_hash_table (info)->tls_sec->vma;
1822 }
1823
1824 outrel.r_offset = (sgot->output_section->vma
1825 + sgot->output_offset
1826 + off);
1827 outrel.r_addend = relocation;
1828 loc = srelgot->contents;
1829 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1830
1831 /* NULL if we had an error. */
1832 if (srelgot->contents != NULL)
1833 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1834 }
1835 else
1836 off &= ~3;
1837
1838 relocation = sgot->output_offset + off
1839 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1840 }
1841
1842 /* The GOT-relative offset to the GOT entry is the
1843 relocation, or for R_CRIS_32_GD, the actual address of
1844 the GOT entry. */
1845 break;
1846
75f500d7
HPN
1847 case R_CRIS_32_IE:
1848 if (info->shared)
1849 {
1850 bfd_set_error (bfd_error_invalid_operation);
1851
1852 /* We've already informed in cris_elf_check_relocs that
1853 this is an error. */
1854 return FALSE;
1855 }
1856 /* Fall through. */
1857
100382c7
HPN
1858 case R_CRIS_32_GOT_TPREL:
1859 case R_CRIS_16_GOT_TPREL:
1860 if (rel->r_addend != 0)
1861 {
1862 /* We can't do anything for a relocation which is
1863 against a symbol *plus offset*. GOT holds
1864 relocations for symbols. Make this an error; the
1865 compiler isn't allowed to pass us these kinds of
1866 things. */
1867 (*_bfd_error_handler)
1868 (_("%B, section %A: relocation %s with non-zero addend %d"
1869 " against symbol `%s'"),
1870 input_bfd,
1871 input_section,
1872 cris_elf_howto_table[r_type].name,
1873 rel->r_addend,
1874 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1875 bfd_set_error (bfd_error_bad_value);
1876 return FALSE;
1877 }
1878
1879 if (!info->shared && (h == NULL || h->def_regular))
1880 {
1881 /* Known contents of the GOT. */
1882 bfd_vma off;
1883
1884 /* The symbol is defined in the program, so just write
1bc86aea 1885 the -prog_tls_size+known_tpoffset into the GOT. */
100382c7 1886 relocation -= elf_hash_table (info)->tls_sec->vma;
1bc86aea 1887 relocation -= elf_hash_table (info)->tls_sec->size;
100382c7
HPN
1888
1889 if (h != NULL)
1890 off = h->got.offset;
1891 else
1892 off = local_got_offsets[r_symndx];
1893
1894 /* Bit 0 is used to mark whether we've emitted the required
1895 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1896 is used similarly for R_CRIS_DTP, see above. */
1897 if ((off & 1) == 0)
1898 {
1899 off &= ~3;
1900
1901 if (h != NULL)
1902 h->got.offset |= 1;
1903 else
1904 local_got_offsets[r_symndx] |= 1;
1905
1906 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1907 }
1908 else
1909 off &= ~3;
1910
75f500d7
HPN
1911 relocation = sgot->output_offset + off
1912 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN
1913 }
1914 else
1915 {
1916 /* Emit a real relocation. */
1917 bfd_vma off;
1918
1919 if (h != NULL)
1920 off = h->got.offset;
1921 else
1922 off = local_got_offsets[r_symndx];
1923
1924 /* See above re usage of bit 0 and 1. */
1925 if ((off & 1) == 0)
1926 {
1927 Elf_Internal_Rela outrel;
1928 bfd_byte *loc;
1929
1930 off &= ~3;
1931
1932 if (h != NULL)
1933 h->got.offset |= 1;
1934 else
1935 local_got_offsets[r_symndx] |= 1;
1936
1937 if (srelgot == NULL)
1938 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1939 BFD_ASSERT (srelgot != NULL);
1940
1941 if (h != NULL && h->dynindx != -1)
1942 {
1943 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1944 relocation = 0;
1945 }
1946 else
1947 {
1948 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1949
1950 /* NULL if we had an error. */
1951 relocation -= elf_hash_table (info)->tls_sec == NULL
1952 ? 0 : elf_hash_table (info)->tls_sec->vma;
1953 }
1954
1955 /* Just "define" the initial contents in some
1956 semi-logical way. */
1957 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1958
1959 outrel.r_offset = (sgot->output_section->vma
1960 + sgot->output_offset
1961 + off);
1962 outrel.r_addend = relocation;
1963 loc = srelgot->contents;
1964 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1965 /* NULL if we had an error. */
1966 if (srelgot->contents != NULL)
1967 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1968 }
1969 else
1970 off &= ~3;
1971
75f500d7
HPN
1972 relocation = sgot->output_offset + off
1973 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
100382c7
HPN
1974 }
1975
75f500d7
HPN
1976 /* The GOT-relative offset to the GOT entry is the relocation,
1977 or for R_CRIS_32_GD, the actual address of the GOT entry. */
100382c7
HPN
1978 break;
1979
1980 case R_CRIS_16_TPREL:
1981 case R_CRIS_32_TPREL:
1982 /* This relocation must only be performed against symbols
1983 defined in an ordinary (non-DSO) object. */
1984 if (info->shared)
1985 {
1986 bfd_set_error (bfd_error_invalid_operation);
1987
1988 /* We've already informed in cris_elf_check_relocs that
1989 this is an error. */
1990 return FALSE;
1991 }
1992
1993 if (h != NULL
1994 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1995 && !h->def_regular
1996 /* If it's undefined, then an error message has already
1997 been emitted. */
1998 && h->root.type != bfd_link_hash_undefined)
1999 {
2000 (*_bfd_error_handler)
2001 (_("%B, section %A: relocation %s is"
2002 " not allowed for symbol: `%s'"
2003 " which is defined outside the program,"
2004 " perhaps a declaration mixup?"),
2005 input_bfd,
2006 input_section,
2007 cris_elf_howto_table[r_type].name,
2008 symname);
2009 bfd_set_error (bfd_error_bad_value);
2010 return FALSE;
2011 }
2012
2013 /* NULL if we had an error. */
2014 relocation -= elf_hash_table (info)->tls_sec == NULL
1bc86aea
HPN
2015 ? 0
2016 : (elf_hash_table (info)->tls_sec->vma
2017 + elf_hash_table (info)->tls_sec->size);
100382c7
HPN
2018
2019 /* The TLS-relative offset is the relocation. */
2020 break;
2021
2022 default:
2023 BFD_FAIL ();
2024 return FALSE;
915e5146
HPN
2025 }
2026
2027 r = cris_final_link_relocate (howto, input_bfd, input_section,
2028 contents, rel, relocation);
2029
2030 if (r != bfd_reloc_ok)
2031 {
2032 const char * msg = (const char *) NULL;
2033
2034 switch (r)
2035 {
2036 case bfd_reloc_overflow:
2037 r = info->callbacks->reloc_overflow
dfeffb9f
L
2038 (info, (h ? &h->root : NULL), symname, howto->name,
2039 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
100382c7
HPN
2040 if (additional_relocation_error_msg_count > 0)
2041 {
2042 additional_relocation_error_msg_count--;
2043 switch (r_type)
2044 {
2045 case R_CRIS_16_GOTPLT:
2046 case R_CRIS_16_GOT:
2047
2048 /* Not just TLS is involved here, so we make
2049 generation and message depend on -fPIC/-fpic
2050 only. */
2051 case R_CRIS_16_GOT_TPREL:
2052 case R_CRIS_16_GOT_GD:
2053 (*_bfd_error_handler)
2054 (_("(too many global variables for -fpic:"
2055 " recompile with -fPIC)"));
2056 break;
2057
2058 case R_CRIS_16_TPREL:
2059 case R_CRIS_16_DTPREL:
2060 (*_bfd_error_handler)
2061 (_("(thread-local data too big for -fpic or"
2062 " -msmall-tls: recompile with -fPIC or"
2063 " -mno-small-tls)"));
2064 break;
2065
2066 /* No known cause for overflow for other relocs. */
2067 default:
2068 break;
2069 }
2070 }
915e5146
HPN
2071 break;
2072
2073 case bfd_reloc_undefined:
2074 r = info->callbacks->undefined_symbol
dc810e39 2075 (info, symname, input_bfd, input_section, rel->r_offset,
b34976b6 2076 TRUE);
915e5146
HPN
2077 break;
2078
2079 case bfd_reloc_outofrange:
2080 msg = _("internal error: out of range error");
2081 break;
2082
2083 case bfd_reloc_notsupported:
2084 msg = _("internal error: unsupported relocation error");
2085 break;
2086
2087 case bfd_reloc_dangerous:
2088 msg = _("internal error: dangerous relocation");
2089 break;
2090
2091 default:
2092 msg = _("internal error: unknown error");
2093 break;
2094 }
2095
2096 if (msg)
2097 r = info->callbacks->warning
dc810e39 2098 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN
2099
2100 if (! r)
b34976b6 2101 return FALSE;
915e5146
HPN
2102 }
2103 }
2104
b34976b6 2105 return TRUE;
915e5146
HPN
2106}
2107\f
2108/* Finish up dynamic symbol handling. We set the contents of various
2109 dynamic sections here. */
2110
b34976b6 2111static bfd_boolean
915e5146
HPN
2112elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2113 bfd *output_bfd;
2114 struct bfd_link_info *info;
2115 struct elf_link_hash_entry *h;
2116 Elf_Internal_Sym *sym;
2117{
2118 bfd *dynobj;
bac23f82
HPN
2119
2120 /* Where in the plt entry to put values. */
915e5146
HPN
2121 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2122
bac23f82
HPN
2123 /* What offset to add to the distance to the first PLT entry for the
2124 value at plt_off3. */
2125 int plt_off3_value_bias = 4;
2126
2127 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2128 for PIC and non-PIC for v32 and pre-v32). */
2129 int plt_stub_offset = 8;
2130 int plt_entry_size = PLT_ENTRY_SIZE;
2131 const bfd_byte *plt_entry = elf_cris_plt_entry;
2132 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2133
2134 /* Adjust the various PLT entry offsets. */
2135 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2136 {
2137 plt_off2 = 14;
2138 plt_off3 = 20;
2139 plt_off3_value_bias = -2;
2140 plt_stub_offset = 12;
2141 plt_entry_size = PLT_ENTRY_SIZE_V32;
2142 plt_entry = elf_cris_plt_entry_v32;
2143 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2144 }
2145
915e5146
HPN
2146 dynobj = elf_hash_table (info)->dynobj;
2147
2148 if (h->plt.offset != (bfd_vma) -1)
2149 {
2150 asection *splt;
2151 asection *sgotplt;
2152 asection *sgot;
2153 asection *srela;
2154 bfd_vma got_base;
2155
2156 bfd_vma gotplt_offset
100382c7 2157 = elf_cris_hash_entry (h)->gotplt_offset;
915e5146 2158 Elf_Internal_Rela rela;
947216bf 2159 bfd_byte *loc;
b34976b6 2160 bfd_boolean has_gotplt = gotplt_offset != 0;
915e5146 2161
0bdf8d40
HPN
2162 /* Get the index in the .rela.plt relocations for the .got.plt
2163 entry that corresponds to this symbol.
2164 We have to count backwards here, and the result is only valid
2165 as an index into .rela.plt. We also have to undo the effect
2166 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2167 .got.plt) for which gotplt_offset is adjusted, because while
2168 that entry goes into .got.plt, its relocation goes into
2169 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2170 processed as part of the runtime lazy .rela.plt relocation).
2171 FIXME: There be literal constants here... */
2172 bfd_vma rela_plt_index
2173 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2174 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
915e5146
HPN
2175
2176 /* Get the offset into the .got table of the entry that corresponds
2177 to this function. Note that we embed knowledge that "incoming"
2178 .got goes after .got.plt in the output without padding (pointer
2179 aligned). However, that knowledge is present in several other
c152c796 2180 places too. */
915e5146
HPN
2181 bfd_vma got_offset
2182 = (has_gotplt
2183 ? gotplt_offset
2184 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2185
2186 /* This symbol has an entry in the procedure linkage table. Set it
2187 up. */
2188
2189 BFD_ASSERT (h->dynindx != -1);
2190
2191 splt = bfd_get_section_by_name (dynobj, ".plt");
2192 sgot = bfd_get_section_by_name (dynobj, ".got");
2193 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2194 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2195 BFD_ASSERT (splt != NULL && sgotplt != NULL
2196 && (! has_gotplt || srela != NULL));
2197
2198 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2199
2200 /* Fill in the entry in the procedure linkage table. */
2201 if (! info->shared)
2202 {
bac23f82
HPN
2203 memcpy (splt->contents + h->plt.offset, plt_entry,
2204 plt_entry_size);
915e5146
HPN
2205
2206 /* We need to enter the absolute address of the GOT entry here. */
2207 bfd_put_32 (output_bfd, got_base + got_offset,
2208 splt->contents + h->plt.offset + plt_off1);
2209 }
2210 else
2211 {
bac23f82
HPN
2212 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2213 plt_entry_size);
915e5146
HPN
2214 bfd_put_32 (output_bfd, got_offset,
2215 splt->contents + h->plt.offset + plt_off1);
2216 }
2217
2218 /* Fill in the plt entry and make a relocation, if this is a "real"
2219 PLT entry. */
2220 if (has_gotplt)
2221 {
bac23f82 2222 /* Fill in the offset to the reloc table. */
915e5146 2223 bfd_put_32 (output_bfd,
0bdf8d40 2224 rela_plt_index * sizeof (Elf32_External_Rela),
915e5146
HPN
2225 splt->contents + h->plt.offset + plt_off2);
2226
2227 /* Fill in the offset to the first PLT entry, where to "jump". */
bac23f82
HPN
2228 bfd_put_32 (output_bfd,
2229 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
915e5146
HPN
2230 splt->contents + h->plt.offset + plt_off3);
2231
2232 /* Fill in the entry in the global offset table with the address of
2233 the relocating stub. */
2234 bfd_put_32 (output_bfd,
2235 (splt->output_section->vma
2236 + splt->output_offset
2237 + h->plt.offset
bac23f82 2238 + plt_stub_offset),
915e5146
HPN
2239 sgotplt->contents + got_offset);
2240
2241 /* Fill in the entry in the .rela.plt section. */
2242 rela.r_offset = (sgotplt->output_section->vma
2243 + sgotplt->output_offset
2244 + got_offset);
2245 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2246 rela.r_addend = 0;
0bdf8d40 2247 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
947216bf 2248 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2249 }
2250
f5385ebf 2251 if (!h->def_regular)
915e5146
HPN
2252 {
2253 /* Mark the symbol as undefined, rather than as defined in
2254 the .plt section. Leave the value alone. */
2255 sym->st_shndx = SHN_UNDEF;
2256
2257 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2258 know whether resetting the value is significant; if it really
2259 is, rather than a quirk or bug in the sparc port, then I
2260 believe we'd see this elsewhere. */
2261 /* If the symbol is weak, we do need to clear the value.
2262 Otherwise, the PLT entry would provide a definition for
2263 the symbol even if the symbol wasn't defined anywhere,
2264 and so the symbol would never be NULL. */
f5385ebf 2265 if (!h->ref_regular_nonweak)
915e5146
HPN
2266 sym->st_value = 0;
2267 }
2268 }
2269
e4a2175c
HPN
2270 /* For an ordinary program, we emit .got relocs only for symbols that
2271 are in the dynamic-symbols table and are either defined by the
2272 program or are undefined weak symbols, or are function symbols
2273 where we do not output a PLT: the PLT reloc was output above and all
2274 references to the function symbol are redirected to the PLT. */
4d96d128 2275 if (h->got.offset != (bfd_vma) -1
100382c7 2276 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
6849c52f
HPN
2277 && (info->shared
2278 || (h->dynindx != -1
e4a2175c 2279 && h->plt.offset == (bfd_vma) -1
f5385ebf 2280 && !h->def_regular
6849c52f 2281 && h->root.type != bfd_link_hash_undefweak)))
915e5146
HPN
2282 {
2283 asection *sgot;
2284 asection *srela;
2285 Elf_Internal_Rela rela;
947216bf 2286 bfd_byte *loc;
dc810e39 2287 bfd_byte *where;
915e5146
HPN
2288
2289 /* This symbol has an entry in the global offset table. Set it up. */
2290
2291 sgot = bfd_get_section_by_name (dynobj, ".got");
2292 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2293 BFD_ASSERT (sgot != NULL && srela != NULL);
2294
2295 rela.r_offset = (sgot->output_section->vma
2296 + sgot->output_offset
dc810e39 2297 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN
2298
2299 /* If this is a static link, or it is a -Bsymbolic link and the
2300 symbol is defined locally or was forced to be local because
2301 of a version file, we just want to emit a RELATIVE reloc.
2302 The entry in the global offset table will already have been
2303 initialized in the relocate_section function. */
dc810e39 2304 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN
2305 if (! elf_hash_table (info)->dynamic_sections_created
2306 || (info->shared
2307 && (info->symbolic || h->dynindx == -1)
f5385ebf 2308 && h->def_regular))
915e5146
HPN
2309 {
2310 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 2311 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN
2312 }
2313 else
2314 {
dc810e39 2315 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN
2316 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2317 rela.r_addend = 0;
2318 }
2319
947216bf
AM
2320 loc = srela->contents;
2321 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2322 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2323 }
2324
f5385ebf 2325 if (h->needs_copy)
915e5146
HPN
2326 {
2327 asection *s;
2328 Elf_Internal_Rela rela;
947216bf 2329 bfd_byte *loc;
915e5146
HPN
2330
2331 /* This symbol needs a copy reloc. Set it up. */
2332
2333 BFD_ASSERT (h->dynindx != -1
2334 && (h->root.type == bfd_link_hash_defined
2335 || h->root.type == bfd_link_hash_defweak));
2336
2337 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2338 ".rela.bss");
2339 BFD_ASSERT (s != NULL);
2340
2341 rela.r_offset = (h->root.u.def.value
2342 + h->root.u.def.section->output_section->vma
2343 + h->root.u.def.section->output_offset);
2344 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2345 rela.r_addend = 0;
947216bf
AM
2346 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2347 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
915e5146
HPN
2348 }
2349
2350 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2351 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 2352 || h == elf_hash_table (info)->hgot)
915e5146
HPN
2353 sym->st_shndx = SHN_ABS;
2354
b34976b6 2355 return TRUE;
915e5146
HPN
2356}
2357\f
100382c7
HPN
2358/* Finish up the dynamic sections. Do *not* emit relocs here, as their
2359 offsets were changed, as part of -z combreloc handling, from those we
2360 computed. */
915e5146 2361
b34976b6 2362static bfd_boolean
915e5146
HPN
2363elf_cris_finish_dynamic_sections (output_bfd, info)
2364 bfd *output_bfd;
2365 struct bfd_link_info *info;
2366{
2367 bfd *dynobj;
2368 asection *sgot;
2369 asection *sdyn;
2370
2371 dynobj = elf_hash_table (info)->dynobj;
2372
2373 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2374 BFD_ASSERT (sgot != NULL);
2375 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2376
2377 if (elf_hash_table (info)->dynamic_sections_created)
2378 {
2379 asection *splt;
2380 Elf32_External_Dyn *dyncon, *dynconend;
2381
2382 splt = bfd_get_section_by_name (dynobj, ".plt");
2383 BFD_ASSERT (splt != NULL && sdyn != NULL);
2384
2385 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 2386 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
915e5146
HPN
2387 for (; dyncon < dynconend; dyncon++)
2388 {
2389 Elf_Internal_Dyn dyn;
2390 asection *s;
2391
2392 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2393
2394 switch (dyn.d_tag)
2395 {
2396 default:
2397 break;
2398
2399 case DT_PLTGOT:
2400 s = bfd_get_section_by_name (output_bfd, ".got");
2401 BFD_ASSERT (s != NULL);
2402 dyn.d_un.d_ptr = s->vma;
2403 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2404 break;
2405
2406 case DT_JMPREL:
2407 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2408 if all symbols are found in the .got (not .got.plt). */
2409 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2410 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2411 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2412 break;
2413
2414 case DT_PLTRELSZ:
2415 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2416 if (s == NULL)
2417 dyn.d_un.d_val = 0;
915e5146 2418 else
eea6121a 2419 dyn.d_un.d_val = s->size;
915e5146
HPN
2420 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2421 break;
2422
2423 case DT_RELASZ:
2424 /* The procedure linkage table relocs (DT_JMPREL) should
2425 not be included in the overall relocs (DT_RELA).
2426 Therefore, we override the DT_RELASZ entry here to
2427 make it not include the JMPREL relocs. Since the
2428 linker script arranges for .rela.plt to follow all
2429 other relocation sections, we don't have to worry
2430 about changing the DT_RELA entry. */
2431 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2432 if (s != NULL)
eea6121a 2433 dyn.d_un.d_val -= s->size;
915e5146
HPN
2434 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2435 break;
2436 }
2437 }
2438
2439 /* Fill in the first entry in the procedure linkage table. */
eea6121a 2440 if (splt->size > 0)
915e5146 2441 {
bac23f82
HPN
2442 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2443 {
2444 if (info->shared)
2445 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2446 PLT_ENTRY_SIZE_V32);
2447 else
2448 {
2449 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2450 PLT_ENTRY_SIZE_V32);
2451 bfd_put_32 (output_bfd,
2452 sgot->output_section->vma
2453 + sgot->output_offset + 4,
2454 splt->contents + 4);
2455
2456 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2457 = PLT_ENTRY_SIZE_V32;
2458 }
2459 }
915e5146 2460 else
bac23f82
HPN
2461 {
2462 if (info->shared)
2463 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2464 PLT_ENTRY_SIZE);
2465 else
2466 {
2467 memcpy (splt->contents, elf_cris_plt0_entry,
2468 PLT_ENTRY_SIZE);
2469 bfd_put_32 (output_bfd,
2470 sgot->output_section->vma
2471 + sgot->output_offset + 4,
2472 splt->contents + 6);
2473 bfd_put_32 (output_bfd,
2474 sgot->output_section->vma
2475 + sgot->output_offset + 8,
2476 splt->contents + 14);
2477
2478 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2479 = PLT_ENTRY_SIZE;
2480 }
915e5146
HPN
2481 }
2482 }
2483 }
2484
2485 /* Fill in the first three entries in the global offset table. */
eea6121a 2486 if (sgot->size > 0)
915e5146
HPN
2487 {
2488 if (sdyn == NULL)
2489 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2490 else
2491 bfd_put_32 (output_bfd,
2492 sdyn->output_section->vma + sdyn->output_offset,
2493 sgot->contents);
2494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2496 }
2497
2498 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2499
b34976b6 2500 return TRUE;
06c15ad7
HPN
2501}
2502\f
2503/* Return the section that should be marked against GC for a given
2504 relocation. */
2505
2506static asection *
07adf181
AM
2507cris_elf_gc_mark_hook (asection *sec,
2508 struct bfd_link_info *info,
2509 Elf_Internal_Rela *rel,
2510 struct elf_link_hash_entry *h,
2511 Elf_Internal_Sym *sym)
06c15ad7 2512{
100382c7 2513 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
06c15ad7 2514 if (h != NULL)
100382c7 2515 switch (r_type)
07adf181
AM
2516 {
2517 case R_CRIS_GNU_VTINHERIT:
2518 case R_CRIS_GNU_VTENTRY:
2519 return NULL;
100382c7
HPN
2520
2521 default:
2522 break;
07adf181 2523 }
06c15ad7 2524
07adf181 2525 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
06c15ad7
HPN
2526}
2527
2528/* Update the got entry reference counts for the section being removed. */
2529
b34976b6 2530static bfd_boolean
07adf181
AM
2531cris_elf_gc_sweep_hook (bfd *abfd,
2532 struct bfd_link_info *info,
2533 asection *sec,
2534 const Elf_Internal_Rela *relocs)
06c15ad7 2535{
915e5146
HPN
2536 Elf_Internal_Shdr *symtab_hdr;
2537 struct elf_link_hash_entry **sym_hashes;
2538 bfd_signed_vma *local_got_refcounts;
2539 const Elf_Internal_Rela *rel, *relend;
915e5146
HPN
2540 bfd *dynobj;
2541 asection *sgot;
2542 asection *srelgot;
2543
7dda2462
TG
2544 if (info->relocatable)
2545 return TRUE;
2546
915e5146
HPN
2547 dynobj = elf_hash_table (info)->dynobj;
2548 if (dynobj == NULL)
b34976b6 2549 return TRUE;
915e5146 2550
babfd660
KH
2551 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2552 sym_hashes = elf_sym_hashes (abfd);
2553 local_got_refcounts = elf_local_got_refcounts (abfd);
2554
915e5146
HPN
2555 sgot = bfd_get_section_by_name (dynobj, ".got");
2556 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2557
2558 relend = relocs + sec->reloc_count;
2559 for (rel = relocs; rel < relend; rel++)
2560 {
babfd660 2561 unsigned long r_symndx;
3eb128b2 2562 struct elf_link_hash_entry *h = NULL;
100382c7
HPN
2563 bfd_signed_vma got_element_size = 4;
2564 bfd_signed_vma *specific_refcount = NULL;
2565 enum elf_cris_reloc_type r_type;
3eb128b2
AM
2566
2567 r_symndx = ELF32_R_SYM (rel->r_info);
2568 if (r_symndx >= symtab_hdr->sh_info)
2569 {
2570 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2571 while (h->root.type == bfd_link_hash_indirect
2572 || h->root.type == bfd_link_hash_warning)
2573 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2574 }
babfd660 2575
100382c7
HPN
2576 r_type = ELF32_R_TYPE (rel->r_info);
2577 switch (r_type)
2578 {
2579 case R_CRIS_32_GOT:
2580 case R_CRIS_16_GOT:
2581 case R_CRIS_16_GOTPLT:
2582 case R_CRIS_32_GOTPLT:
2583 specific_refcount = h != NULL
2584 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2585 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2586 break;
2587
2588 case R_CRIS_32_GD:
2589 case R_CRIS_32_GOT_GD:
2590 case R_CRIS_16_GOT_GD:
2591 got_element_size = 8;
2592 specific_refcount = h != NULL
2593 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2594 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2595 break;
2596
75f500d7 2597 case R_CRIS_32_IE:
100382c7
HPN
2598 case R_CRIS_16_GOT_TPREL:
2599 case R_CRIS_32_GOT_TPREL:
2600 specific_refcount = h != NULL
2601 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2602 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2603 break;
2604
2605 default:
2606 break;
2607 }
2608
2609 switch (r_type)
915e5146 2610 {
75f500d7 2611 case R_CRIS_32_IE:
100382c7
HPN
2612 case R_CRIS_32_GD:
2613 case R_CRIS_16_GOT_TPREL:
2614 case R_CRIS_32_GOT_TPREL:
2615 case R_CRIS_32_GOT_GD:
2616 case R_CRIS_16_GOT_GD:
915e5146
HPN
2617 case R_CRIS_16_GOT:
2618 case R_CRIS_32_GOT:
3eb128b2 2619 if (h != NULL)
915e5146 2620 {
100382c7
HPN
2621 /* If the counters are 0 when we got here, we've
2622 miscounted somehow somewhere, an internal error. */
2623 BFD_ASSERT (h->got.refcount > 0);
2624 --h->got.refcount;
2625
2626 BFD_ASSERT (*specific_refcount > 0);
2627 --*specific_refcount;
2628 if (*specific_refcount == 0)
915e5146 2629 {
100382c7
HPN
2630 /* We don't need the .got entry any more. */
2631 sgot->size -= got_element_size;
2632 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2633 }
2634 break;
2635 }
2636
2637 local_got_reloc:
2638 if (local_got_refcounts != NULL)
2639 {
100382c7
HPN
2640 /* If the counters are 0 when we got here, we've
2641 miscounted somehow somewhere, an internal error. */
2642 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2643 --local_got_refcounts[r_symndx];
2644
2645 BFD_ASSERT (*specific_refcount > 0);
2646 --*specific_refcount;
2647 if (*specific_refcount == 0)
915e5146 2648 {
100382c7
HPN
2649 /* We don't need the .got entry any more. */
2650 sgot->size -= got_element_size;
2651 if (info->shared)
2652 srelgot->size -= sizeof (Elf32_External_Rela);
915e5146
HPN
2653 }
2654 }
2655 break;
2656
2657 case R_CRIS_16_GOTPLT:
2658 case R_CRIS_32_GOTPLT:
2659 /* For local symbols, treat these like GOT relocs. */
3eb128b2 2660 if (h == NULL)
915e5146 2661 goto local_got_reloc;
e4a2175c 2662 /* Fall through. */
3eb128b2 2663
915e5146
HPN
2664 case R_CRIS_32_PLT_GOTREL:
2665 /* FIXME: We don't garbage-collect away the .got section. */
2666 if (local_got_refcounts != NULL)
2667 local_got_refcounts[-1]--;
2668 /* Fall through. */
3eb128b2 2669
915e5146
HPN
2670 case R_CRIS_8_PCREL:
2671 case R_CRIS_16_PCREL:
2672 case R_CRIS_32_PCREL:
2673 case R_CRIS_32_PLT_PCREL:
3eb128b2 2674 if (h != NULL)
915e5146 2675 {
0a4787a0
HPN
2676 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2677 && h->plt.refcount > 0)
915e5146
HPN
2678 --h->plt.refcount;
2679 }
2680 break;
2681
100382c7
HPN
2682 case R_CRIS_32_DTPREL:
2683 case R_CRIS_16_DTPREL:
2684 elf_cris_hash_table (info)->dtpmod_refcount--;
2685 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2686 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2687 BFD_ASSERT (local_got_refcounts != NULL);
2688 local_got_refcounts[-1]--;
2689 break;
2690
915e5146
HPN
2691 default:
2692 break;
2693 }
2694 }
2695
b34976b6 2696 return TRUE;
06c15ad7
HPN
2697}
2698
915e5146
HPN
2699/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2700 entry but we found we will not create any. Called when we find we will
4d96d128
HPN
2701 not have any PLT for this symbol, by for example
2702 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2703 or elf_cris_size_dynamic_sections if no dynamic sections will be
2704 created (we're only linking static objects). */
915e5146 2705
b34976b6 2706static bfd_boolean
915e5146
HPN
2707elf_cris_adjust_gotplt_to_got (h, p)
2708 struct elf_cris_link_hash_entry *h;
2709 PTR p;
2710{
2711 struct bfd_link_info *info = (struct bfd_link_info *) p;
915e5146 2712
e92d460e
AM
2713 if (h->root.root.type == bfd_link_hash_warning)
2714 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2715
915e5146
HPN
2716 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2717 if (h->gotplt_refcount <= 0)
b34976b6 2718 return TRUE;
915e5146 2719
100382c7 2720 if (h->reg_got_refcount > 0)
915e5146 2721 {
100382c7
HPN
2722 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2723 Probably not necessary at this stage, but keeping them accurate
915e5146
HPN
2724 helps avoiding surprises later. */
2725 h->root.got.refcount += h->gotplt_refcount;
100382c7 2726 h->reg_got_refcount += h->gotplt_refcount;
5e0f5ae3 2727 h->gotplt_refcount = 0;
915e5146
HPN
2728 }
2729 else
2730 {
4d96d128 2731 /* No GOT entry for this symbol. We need to create one. */
8d1d654f
AM
2732 bfd *dynobj = elf_hash_table (info)->dynobj;
2733 asection *sgot;
2734 asection *srelgot;
2735
2736 BFD_ASSERT (dynobj != NULL);
2737 sgot = bfd_get_section_by_name (dynobj, ".got");
2738 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
915e5146 2739
100382c7
HPN
2740 /* Put accurate refcounts there. */
2741 h->root.got.refcount += h->gotplt_refcount;
2742 h->reg_got_refcount = h->gotplt_refcount;
915e5146 2743
5e0f5ae3 2744 h->gotplt_refcount = 0;
915e5146 2745
44aa49bb
HPN
2746 /* We always have a .got and a .rela.got section if there were
2747 GOTPLT relocs in input. */
2748 BFD_ASSERT (sgot != NULL && srelgot != NULL);
915e5146
HPN
2749
2750 /* Allocate space in the .got section. */
eea6121a 2751 sgot->size += 4;
915e5146
HPN
2752
2753 /* Allocate relocation space. */
eea6121a 2754 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
2755 }
2756
b34976b6 2757 return TRUE;
915e5146
HPN
2758}
2759
2760/* Try to fold PLT entries with GOT entries. There are two cases when we
2761 want to do this:
2762
2763 - When all PLT references are GOTPLT references, and there are GOT
e4a2175c
HPN
2764 references, and this is not the executable. We don't have to
2765 generate a PLT at all.
915e5146 2766
e4a2175c
HPN
2767 - When there are both (ordinary) PLT references and GOT references,
2768 and this isn't the executable.
915e5146 2769 We want to make the PLT reference use the ordinary GOT entry rather
e4a2175c
HPN
2770 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2771 since the GOT entry will have to be resolved at startup anyway.
915e5146
HPN
2772
2773 Though the latter case is handled when room for the PLT is allocated,
2774 not here.
2775
e4a2175c
HPN
2776 By folding into the GOT, we may need a round-trip to a PLT in the
2777 executable for calls, a loss in performance. Still, losing a
2778 reloc is a win in size and at least in start-up time.
2779
915e5146
HPN
2780 Note that this function is called before symbols are forced local by
2781 version scripts. The differing cases are handled by
2782 elf_cris_hide_symbol. */
2783
b34976b6 2784static bfd_boolean
915e5146
HPN
2785elf_cris_try_fold_plt_to_got (h, p)
2786 struct elf_cris_link_hash_entry *h;
2787 PTR p;
2788{
2789 struct bfd_link_info *info = (struct bfd_link_info *) p;
2790
2791 /* If there are no GOT references for this symbol, we can't fold any
2792 other reference so there's nothing to do. Likewise if there are no
2793 PLT references; GOTPLT references included. */
2794 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
b34976b6 2795 return TRUE;
915e5146
HPN
2796
2797 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2798 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2799
2800 if (h->gotplt_refcount == h->root.plt.refcount)
2801 {
4d96d128 2802 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN
2803 references. Convert PLT to GOT references. */
2804 if (! elf_cris_adjust_gotplt_to_got (h, info))
b34976b6 2805 return FALSE;
915e5146
HPN
2806
2807 /* Clear the PLT references, so no PLT will be created. */
2808 h->root.plt.offset = (bfd_vma) -1;
2809 }
2810
b34976b6 2811 return TRUE;
915e5146
HPN
2812}
2813
2814/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2815 to use a GOT entry (and create one) rather than requiring a GOTPLT
2816 entry. */
2817
2818static void
e5094212 2819elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN
2820 struct bfd_link_info *info;
2821 struct elf_link_hash_entry *h;
b34976b6 2822 bfd_boolean force_local;
915e5146
HPN
2823{
2824 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2825
e5094212 2826 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN
2827}
2828
2829/* Adjust a symbol defined by a dynamic object and referenced by a
2830 regular object. The current definition is in some section of the
2831 dynamic object, but we're not including those sections. We have to
2832 change the definition to something the rest of the link can
2833 understand. */
2834
b34976b6 2835static bfd_boolean
915e5146
HPN
2836elf_cris_adjust_dynamic_symbol (info, h)
2837 struct bfd_link_info *info;
2838 struct elf_link_hash_entry *h;
2839{
2840 bfd *dynobj;
2841 asection *s;
bac23f82 2842 bfd_size_type plt_entry_size;
915e5146
HPN
2843
2844 dynobj = elf_hash_table (info)->dynobj;
2845
2846 /* Make sure we know what is going on here. */
2847 BFD_ASSERT (dynobj != NULL
f5385ebf 2848 && (h->needs_plt
f6e332e6 2849 || h->u.weakdef != NULL
f5385ebf
AM
2850 || (h->def_dynamic
2851 && h->ref_regular
2852 && !h->def_regular)));
915e5146 2853
bac23f82
HPN
2854 plt_entry_size
2855 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2856 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2857
915e5146
HPN
2858 /* If this is a function, put it in the procedure linkage table. We
2859 will fill in the contents of the procedure linkage table later,
2860 when we know the address of the .got section. */
2861 if (h->type == STT_FUNC
f5385ebf 2862 || h->needs_plt)
915e5146 2863 {
6849c52f
HPN
2864 /* If we link a program (not a DSO), we'll get rid of unnecessary
2865 PLT entries; we point to the actual symbols -- even for pic
2866 relocs, because a program built with -fpic should have the same
2867 result as one built without -fpic, specifically considering weak
2868 symbols.
2869 FIXME: m68k and i386 differ here, for unclear reasons. */
915e5146 2870 if (! info->shared
f5385ebf 2871 && !h->def_dynamic)
915e5146
HPN
2872 {
2873 /* This case can occur if we saw a PLT reloc in an input file,
6849c52f
HPN
2874 but the symbol was not defined by a dynamic object. In such
2875 a case, we don't actually need to build a procedure linkage
2876 table, and we can just do an absolute or PC reloc instead, or
4d96d128 2877 change a .got.plt index to a .got index for GOTPLT relocs. */
f5385ebf
AM
2878 BFD_ASSERT (h->needs_plt);
2879 h->needs_plt = 0;
915e5146 2880 h->plt.offset = (bfd_vma) -1;
915e5146
HPN
2881 return
2882 elf_cris_adjust_gotplt_to_got ((struct
2883 elf_cris_link_hash_entry *) h,
2884 info);
2885 }
2886
e4a2175c
HPN
2887 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2888 where a pointer-equivalent symbol was unimportant (i.e. more
2889 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2890 of the PLT. We can't for the executable, because the GOT
2891 entries will point to the PLT there (and be constant). */
2892 if (info->shared
2893 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2894 h, info))
b34976b6 2895 return FALSE;
915e5146
HPN
2896
2897 /* GC or folding may have rendered this entry unused. */
2898 if (h->plt.refcount <= 0)
2899 {
f5385ebf 2900 h->needs_plt = 0;
915e5146 2901 h->plt.offset = (bfd_vma) -1;
b34976b6 2902 return TRUE;
915e5146
HPN
2903 }
2904
2905 /* Make sure this symbol is output as a dynamic symbol. */
2906 if (h->dynindx == -1)
2907 {
c152c796 2908 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2909 return FALSE;
915e5146
HPN
2910 }
2911
2912 s = bfd_get_section_by_name (dynobj, ".plt");
2913 BFD_ASSERT (s != NULL);
2914
2915 /* If this is the first .plt entry, make room for the special
2916 first entry. */
eea6121a 2917 if (s->size == 0)
bac23f82 2918 s->size += plt_entry_size;
915e5146
HPN
2919
2920 /* If this symbol is not defined in a regular file, and we are
2921 not generating a shared library, then set the symbol to this
6849c52f 2922 location in the .plt. */
915e5146 2923 if (!info->shared
f5385ebf 2924 && !h->def_regular)
915e5146
HPN
2925 {
2926 h->root.u.def.section = s;
eea6121a 2927 h->root.u.def.value = s->size;
915e5146
HPN
2928 }
2929
4d96d128
HPN
2930 /* If there's already a GOT entry, use that, not a .got.plt. A
2931 GOT field still has a reference count when we get here; it's
e4a2175c
HPN
2932 not yet changed to an offset. We can't do this for an
2933 executable, because then the reloc associated with the PLT
2934 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2935 this to elf_cris_try_fold_plt_to_got. */
2936 if (info->shared && h->got.refcount > 0)
915e5146
HPN
2937 {
2938 h->got.refcount += h->plt.refcount;
2939
2940 /* Mark the PLT offset to use the GOT entry by setting the low
2941 bit in the plt offset; it is always a multiple of
bac23f82
HPN
2942 plt_entry_size (which is at least a multiple of 2). */
2943 BFD_ASSERT ((s->size % plt_entry_size) == 0);
915e5146
HPN
2944
2945 /* Change the PLT refcount to an offset. */
eea6121a 2946 h->plt.offset = s->size;
915e5146
HPN
2947
2948 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2949 that the got entry should be used instead. */
2950 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2951 h)->gotplt_offset == 0);
2952
2953 /* Make room for this entry. */
bac23f82 2954 s->size += plt_entry_size;
915e5146 2955
b34976b6 2956 return TRUE;
915e5146
HPN
2957 }
2958
2959 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
eea6121a 2960 h->plt.offset = s->size;
915e5146
HPN
2961
2962 /* Make room for this entry. */
bac23f82 2963 s->size += plt_entry_size;
915e5146
HPN
2964
2965 /* We also need to make an entry in the .got.plt section, which
2966 will be placed in the .got section by the linker script. */
2967 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2968 = elf_cris_hash_table (info)->next_gotplt_entry;
2969 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2970
2971 s = bfd_get_section_by_name (dynobj, ".got.plt");
2972 BFD_ASSERT (s != NULL);
eea6121a 2973 s->size += 4;
915e5146
HPN
2974
2975 /* We also need to make an entry in the .rela.plt section. */
2976
2977 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2978 BFD_ASSERT (s != NULL);
eea6121a 2979 s->size += sizeof (Elf32_External_Rela);
915e5146 2980
b34976b6 2981 return TRUE;
915e5146
HPN
2982 }
2983
2984 /* Reinitialize the plt offset now that it is not used as a reference
2985 count any more. */
2986 h->plt.offset = (bfd_vma) -1;
2987
2988 /* If this is a weak symbol, and there is a real definition, the
2989 processor independent code will have arranged for us to see the
2990 real definition first, and we can just use the same value. */
f6e332e6 2991 if (h->u.weakdef != NULL)
915e5146 2992 {
f6e332e6
AM
2993 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2994 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2995 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2996 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 2997 return TRUE;
915e5146
HPN
2998 }
2999
3000 /* This is a reference to a symbol defined by a dynamic object which
3001 is not a function. */
3002
3003 /* If we are creating a shared library, we must presume that the
3004 only references to the symbol are via the global offset table.
3005 For such cases we need not do anything here; the relocations will
3006 be handled correctly by relocate_section. */
3007 if (info->shared)
b34976b6 3008 return TRUE;
915e5146
HPN
3009
3010 /* If there are no references to this symbol that do not use the
3011 GOT, we don't need to generate a copy reloc. */
f5385ebf 3012 if (!h->non_got_ref)
b34976b6 3013 return TRUE;
915e5146 3014
909272ee
AM
3015 if (h->size == 0)
3016 {
3017 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3018 h->root.root.string);
3019 return TRUE;
3020 }
3021
915e5146
HPN
3022 /* We must allocate the symbol in our .dynbss section, which will
3023 become part of the .bss section of the executable. There will be
3024 an entry for this symbol in the .dynsym section. The dynamic
3025 object will contain position independent code, so all references
3026 from the dynamic object to this symbol will go through the global
3027 offset table. The dynamic linker will use the .dynsym entry to
3028 determine the address it must put in the global offset table, so
3029 both the dynamic object and the regular object will refer to the
3030 same memory location for the variable. */
3031
3032 s = bfd_get_section_by_name (dynobj, ".dynbss");
3033 BFD_ASSERT (s != NULL);
3034
3035 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3036 copy the initial value out of the dynamic object and into the
3037 runtime process image. We need to remember the offset into the
3038 .rela.bss section we are going to use. */
3039 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3040 {
3041 asection *srel;
3042
3043 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3044 BFD_ASSERT (srel != NULL);
eea6121a 3045 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3046 h->needs_copy = 1;
915e5146
HPN
3047 }
3048
027297b7 3049 return _bfd_elf_adjust_dynamic_copy (h, s);
915e5146
HPN
3050}
3051
237bc7f0
HPN
3052/* Adjust our "subclass" elements for an indirect symbol. */
3053
3054static void
3055elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3056 struct elf_link_hash_entry *dir,
3057 struct elf_link_hash_entry *ind)
3058{
3059 struct elf_cris_link_hash_entry *edir, *eind;
3060
3061 edir = (struct elf_cris_link_hash_entry *) dir;
3062 eind = (struct elf_cris_link_hash_entry *) ind;
3063
867ea5fd
HPN
3064 /* Only indirect symbols are replaced; we're not interested in
3065 updating any of EIND's fields for other symbols. */
3066 if (eind->root.root.type != bfd_link_hash_indirect)
451ffe63
HPN
3067 {
3068 /* Still, we need to copy flags for e.g. weak definitions. */
3069 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3070 return;
3071 }
867ea5fd 3072
237bc7f0
HPN
3073 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3074 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3075
3076#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3077#define XMOVE(F) XMOVOPZ (F, +=, 0)
3078 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3079 XMOVE (gotplt_refcount);
3080 XMOVE (gotplt_offset);
3081 XMOVE (reg_got_refcount);
3082 XMOVE (tprel_refcount);
3083 XMOVE (dtp_refcount);
3084#undef XMOVE
3085#undef XMOVOPZ
3086
3087 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3088}
3089
915e5146 3090/* Look through the relocs for a section during the first phase. */
a7c10850 3091
b34976b6 3092static bfd_boolean
06c15ad7
HPN
3093cris_elf_check_relocs (abfd, info, sec, relocs)
3094 bfd *abfd;
3095 struct bfd_link_info *info;
3096 asection *sec;
3097 const Elf_Internal_Rela *relocs;
3098{
915e5146 3099 bfd *dynobj;
06c15ad7 3100 Elf_Internal_Shdr *symtab_hdr;
5582a088 3101 struct elf_link_hash_entry **sym_hashes;
915e5146 3102 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN
3103 const Elf_Internal_Rela *rel;
3104 const Elf_Internal_Rela *rel_end;
915e5146
HPN
3105 asection *sgot;
3106 asection *srelgot;
3107 asection *sreloc;
a7c10850 3108
1049f94e 3109 if (info->relocatable)
b34976b6 3110 return TRUE;
a7c10850 3111
915e5146 3112 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN
3113 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3114 sym_hashes = elf_sym_hashes (abfd);
915e5146
HPN
3115 local_got_refcounts = elf_local_got_refcounts (abfd);
3116
3117 sgot = NULL;
3118 srelgot = NULL;
3119 sreloc = NULL;
3120
06c15ad7
HPN
3121 rel_end = relocs + sec->reloc_count;
3122 for (rel = relocs; rel < rel_end; rel++)
3123 {
3124 struct elf_link_hash_entry *h;
3125 unsigned long r_symndx;
915e5146 3126 enum elf_cris_reloc_type r_type;
100382c7
HPN
3127 bfd_signed_vma got_element_size = 4;
3128 unsigned long r_symndx_lgot = INT_MAX;
a7c10850 3129
06c15ad7
HPN
3130 r_symndx = ELF32_R_SYM (rel->r_info);
3131 if (r_symndx < symtab_hdr->sh_info)
100382c7
HPN
3132 {
3133 h = NULL;
3134 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3135 }
06c15ad7 3136 else
973a3492
L
3137 {
3138 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3139 while (h->root.type == bfd_link_hash_indirect
3140 || h->root.type == bfd_link_hash_warning)
3141 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3142 }
a7c10850 3143
915e5146
HPN
3144 r_type = ELF32_R_TYPE (rel->r_info);
3145
3146 /* Some relocs require linker-created sections; we need to hang them
3147 on the first input bfd we found that contained dynamic relocs. */
3148 switch (r_type)
3149 {
100382c7
HPN
3150 case R_CRIS_16_DTPREL:
3151 case R_CRIS_32_DTPREL:
3152 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3153 entry at index 3. */
3154 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3155 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3156 elf_cris_hash_table (info)->dtpmod_refcount++;
3157 /* Fall through. */
3158
75f500d7 3159 case R_CRIS_32_IE:
100382c7
HPN
3160 case R_CRIS_32_GD:
3161 case R_CRIS_16_GOT_GD:
3162 case R_CRIS_32_GOT_GD:
3163 case R_CRIS_32_GOT_TPREL:
3164 case R_CRIS_16_GOT_TPREL:
915e5146
HPN
3165 case R_CRIS_16_GOT:
3166 case R_CRIS_32_GOT:
3167 case R_CRIS_32_GOTREL:
3168 case R_CRIS_32_PLT_GOTREL:
3169 case R_CRIS_32_PLT_PCREL:
3170 case R_CRIS_16_GOTPLT:
3171 case R_CRIS_32_GOTPLT:
3172 if (dynobj == NULL)
3173 {
3174 elf_hash_table (info)->dynobj = dynobj = abfd;
3175
bac23f82
HPN
3176 /* We could handle this if we can get a handle on the
3177 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3178 that, we must insist on dynobj being a specific mach. */
3179 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3180 {
3181 (*_bfd_error_handler)
3182 (_("%B, section %A:\n v10/v32 compatible object %s"
3183 " must not contain a PIC relocation"),
3184 abfd, sec);
3185 return FALSE;
3186 }
3187
915e5146
HPN
3188 /* Create the .got section, so we can assume it's always
3189 present whenever there's a dynobj. */
3190 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 3191 return FALSE;
915e5146 3192 }
100382c7
HPN
3193
3194 if (sgot == NULL)
3195 sgot = bfd_get_section_by_name (dynobj, ".got");
3196
3197 if (local_got_refcounts == NULL)
3198 {
3199 bfd_size_type amt;
3200
3201 /* We use index local_got_refcounts[-1] to count all
3202 GOT-relative relocations that do not have explicit
3203 GOT entries. */
3204 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3205 amt *= sizeof (bfd_signed_vma);
3206 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3207 if (local_got_refcounts == NULL)
3208 return FALSE;
3209
3210 local_got_refcounts++;
3211 elf_local_got_refcounts (abfd) = local_got_refcounts;
3212 }
915e5146
HPN
3213 break;
3214
3215 default:
3216 break;
3217 }
3218
3219 /* Some relocs require a global offset table (but perhaps not a
3220 specific GOT entry). */
4d96d128 3221 switch (r_type)
915e5146 3222 {
100382c7
HPN
3223 case R_CRIS_16_DTPREL:
3224 case R_CRIS_32_DTPREL:
3225 /* Not requesting .got.rela for an executable: the contents
3226 of the first entry is constant there. For a shared
3227 library, we need .got.rela for the R_CRIS_DTPMOD
3228 relocation at index 3. */
3229 if (!info->shared)
3230 break;
3231 /* Fall through. */
3232
75f500d7 3233 case R_CRIS_32_IE:
100382c7
HPN
3234 case R_CRIS_32_GD:
3235 case R_CRIS_16_GOT_GD:
3236 case R_CRIS_32_GOT_GD:
3237 case R_CRIS_32_GOT_TPREL:
3238 case R_CRIS_16_GOT_TPREL:
3239 /* Fall through. */
3240
44aa49bb
HPN
3241 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3242 entry only for local symbols. Unfortunately, we don't know
3243 until later on if there's a version script that forces the
3244 symbol local. We must have the .rela.got section in place
3245 before we know if the symbol looks global now, so we need
3246 to treat the reloc just like for R_CRIS_16_GOT and
3247 R_CRIS_32_GOT. */
3248 case R_CRIS_16_GOTPLT:
3249 case R_CRIS_32_GOTPLT:
915e5146
HPN
3250 case R_CRIS_16_GOT:
3251 case R_CRIS_32_GOT:
44aa49bb
HPN
3252 if (srelgot == NULL
3253 && (h != NULL || info->shared))
3254 {
3255 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3256 if (srelgot == NULL)
3257 {
3496cb2a
L
3258 srelgot = bfd_make_section_with_flags (dynobj,
3259 ".rela.got",
3260 (SEC_ALLOC
3261 | SEC_LOAD
3262 | SEC_HAS_CONTENTS
3263 | SEC_IN_MEMORY
3264 | SEC_LINKER_CREATED
3265 | SEC_READONLY));
44aa49bb 3266 if (srelgot == NULL
44aa49bb 3267 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 3268 return FALSE;
44aa49bb
HPN
3269 }
3270 }
100382c7 3271 break;
44aa49bb 3272
100382c7
HPN
3273 default:
3274 break;
3275 }
915e5146 3276
100382c7
HPN
3277 /* Warn and error for invalid input. */
3278 switch (r_type)
3279 {
75f500d7 3280 case R_CRIS_32_IE:
100382c7
HPN
3281 case R_CRIS_32_TPREL:
3282 case R_CRIS_16_TPREL:
3283 case R_CRIS_32_GD:
3284 if (info->shared)
915e5146 3285 {
100382c7
HPN
3286 (*_bfd_error_handler)
3287 (_("%B, section %A:\n relocation %s not valid"
3288 " in a shared object;"
3289 " typically an option mixup, recompile with -fPIC"),
3290 abfd,
3291 sec,
3292 cris_elf_howto_table[r_type].name);
3293 /* Don't return FALSE here; we want messages for all of
3294 these and the error behavior is ungraceful
3295 anyway. */
3296 }
3297 default:
3298 break;
3299 }
915e5146 3300
100382c7
HPN
3301 switch (r_type)
3302 {
3303 case R_CRIS_32_GD:
3304 case R_CRIS_16_GOT_GD:
3305 case R_CRIS_32_GOT_GD:
3306 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3307 got_element_size = 8;
3308 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3309 break;
915e5146 3310
100382c7
HPN
3311 case R_CRIS_16_DTPREL:
3312 case R_CRIS_32_DTPREL:
3313 /* These two just request for the constant-index
3314 module-local tls_index-sized GOT entry, which we add
3315 elsewhere. */
915e5146
HPN
3316 break;
3317
75f500d7 3318 case R_CRIS_32_IE:
100382c7
HPN
3319 case R_CRIS_32_GOT_TPREL:
3320 case R_CRIS_16_GOT_TPREL:
3321 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3322
75f500d7 3323 /* Those relocs also require that a DSO is of type
100382c7
HPN
3324 Initial Exec. Like other targets, we don't reset this
3325 flag even if the relocs are GC:ed away. */
3326 if (info->shared)
3327 info->flags |= DF_STATIC_TLS;
3328 break;
3329
3330 /* Let's list the other assembler-generated TLS-relocs too,
3331 just to show that they're not forgotten. */
3332 case R_CRIS_16_TPREL:
3333 case R_CRIS_32_TPREL:
915e5146
HPN
3334 default:
3335 break;
3336 }
3337
4d96d128 3338 switch (r_type)
06c15ad7 3339 {
915e5146
HPN
3340 case R_CRIS_16_GOTPLT:
3341 case R_CRIS_32_GOTPLT:
3342 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3343 entry) is eliminated. We can only do this for a non-local
3344 symbol. */
3345 if (h != NULL)
3346 {
100382c7 3347 elf_cris_hash_entry (h)->gotplt_refcount++;
915e5146
HPN
3348 goto handle_gotplt_reloc;
3349 }
3350 /* If h is NULL then this is a local symbol, and we must make a
3351 GOT entry for it, so handle it like a GOT reloc. */
3352 /* Fall through. */
3353
75f500d7 3354 case R_CRIS_32_IE:
100382c7
HPN
3355 case R_CRIS_32_GD:
3356 case R_CRIS_16_GOT_GD:
3357 case R_CRIS_32_GOT_GD:
3358 case R_CRIS_32_GOT_TPREL:
3359 case R_CRIS_16_GOT_TPREL:
915e5146
HPN
3360 case R_CRIS_16_GOT:
3361 case R_CRIS_32_GOT:
3362 /* This symbol requires a global offset table entry. */
915e5146
HPN
3363 if (h != NULL)
3364 {
51b64d56 3365 if (h->got.refcount == 0)
915e5146 3366 {
915e5146
HPN
3367 /* Make sure this symbol is output as a dynamic symbol. */
3368 if (h->dynindx == -1)
3369 {
c152c796 3370 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3371 return FALSE;
915e5146 3372 }
915e5146 3373 }
100382c7
HPN
3374
3375 /* Update the sum of reloc counts for this symbol. */
51b64d56 3376 h->got.refcount++;
100382c7
HPN
3377
3378 switch (r_type)
3379 {
3380 case R_CRIS_16_GOT:
3381 case R_CRIS_32_GOT:
3382 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3383 {
3384 /* Allocate space in the .got section. */
3385 sgot->size += got_element_size;
3386 /* Allocate relocation space. */
3387 srelgot->size += sizeof (Elf32_External_Rela);
3388 }
3389 elf_cris_hash_entry (h)->reg_got_refcount++;
3390 break;
3391
3392 case R_CRIS_32_GD:
3393 case R_CRIS_16_GOT_GD:
3394 case R_CRIS_32_GOT_GD:
3395 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3396 {
3397 /* Allocate space in the .got section. */
3398 sgot->size += got_element_size;
3399 /* Allocate relocation space. */
3400 srelgot->size += sizeof (Elf32_External_Rela);
3401 }
3402 elf_cris_hash_entry (h)->dtp_refcount++;
3403 break;
3404
75f500d7 3405 case R_CRIS_32_IE:
100382c7
HPN
3406 case R_CRIS_32_GOT_TPREL:
3407 case R_CRIS_16_GOT_TPREL:
3408 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3409 {
3410 /* Allocate space in the .got section. */
3411 sgot->size += got_element_size;
3412 /* Allocate relocation space. */
3413 srelgot->size += sizeof (Elf32_External_Rela);
3414 }
3415 elf_cris_hash_entry (h)->tprel_refcount++;
3416 break;
3417
3418 default:
3419 BFD_FAIL ();
3420 break;
3421 }
915e5146
HPN
3422 }
3423 else
3424 {
3425 /* This is a global offset table entry for a local symbol. */
100382c7 3426 if (local_got_refcounts[r_symndx_lgot] == 0)
915e5146 3427 {
100382c7 3428 sgot->size += got_element_size;
915e5146
HPN
3429 if (info->shared)
3430 {
100382c7
HPN
3431 /* If we are generating a shared object, we need
3432 to output a R_CRIS_RELATIVE reloc so that the
3433 dynamic linker can adjust this GOT entry.
3434 Similarly for non-regular got entries. */
eea6121a 3435 srelgot->size += sizeof (Elf32_External_Rela);
915e5146
HPN
3436 }
3437 }
100382c7
HPN
3438 /* Update the reloc-specific count. */
3439 local_got_refcounts[r_symndx_lgot]++;
3440
3441 /* This one is the sum of all the others. */
51b64d56 3442 local_got_refcounts[r_symndx]++;
915e5146
HPN
3443 }
3444 break;
3445
100382c7
HPN
3446 case R_CRIS_16_DTPREL:
3447 case R_CRIS_32_DTPREL:
915e5146
HPN
3448 case R_CRIS_32_GOTREL:
3449 /* This reference requires a global offset table.
3450 FIXME: The actual refcount isn't used currently; the .got
3451 section can't be removed if there were any references in the
3452 input. */
3453 local_got_refcounts[-1]++;
3454 break;
3455
3456 handle_gotplt_reloc:
3457
3458 case R_CRIS_32_PLT_GOTREL:
3459 /* This reference requires a global offset table. */
3460 local_got_refcounts[-1]++;
3461 /* Fall through. */
3462
3463 case R_CRIS_32_PLT_PCREL:
3464 /* This symbol requires a procedure linkage table entry. We
3465 actually build the entry in adjust_dynamic_symbol,
3466 because this might be a case of linking PIC code which is
3467 never referenced by a dynamic object, in which case we
3468 don't need to generate a procedure linkage table entry
3469 after all. */
3470
ada1953e
HPN
3471 /* Beware: if we'd check for visibility of the symbol here
3472 (and not marking the need for a PLT when non-visible), we'd
3473 get into trouble with keeping handling consistent with
3474 regards to relocs found before definition and GOTPLT
3475 handling. Eliminable PLT entries will be dealt with later
3476 anyway. */
3477 if (h == NULL)
915e5146
HPN
3478 continue;
3479
f5385ebf 3480 h->needs_plt = 1;
51b64d56 3481 h->plt.refcount++;
915e5146
HPN
3482 break;
3483
3484 case R_CRIS_8:
3485 case R_CRIS_16:
3486 case R_CRIS_32:
3487 /* Let's help debug shared library creation. Any of these
0d08de41
HPN
3488 relocs *can* be used in shared libs, but pages containing
3489 them cannot be shared, so they're not appropriate for
3490 common use. Don't warn for sections we don't care about,
3491 such as debug sections or non-constant sections. We
3492 can't help tables of (global) function pointers, for
3493 example, though they must be emitted in a (writable) data
3494 section to avoid having impure text sections. */
915e5146
HPN
3495 if (info->shared
3496 && (sec->flags & SEC_ALLOC) != 0
3497 && (sec->flags & SEC_READONLY) != 0)
3498 {
3499 /* FIXME: How do we make this optionally a warning only? */
8f615d07 3500 (*_bfd_error_handler)
bac23f82
HPN
3501 (_("%B, section %A:\n relocation %s should not"
3502 " be used in a shared object; recompile with -fPIC"),
d003868e
AM
3503 abfd,
3504 sec,
8f615d07 3505 cris_elf_howto_table[r_type].name);
915e5146 3506 }
0d08de41
HPN
3507 if (h != NULL)
3508 {
3509 h->non_got_ref = 1;
100382c7 3510
0d08de41
HPN
3511 /* Make sure a plt entry is created for this symbol if it
3512 turns out to be a function defined by a dynamic object. */
3513 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3514 h->plt.refcount++;
3515 }
3516
3517 /* If we are creating a shared library and this is not a local
3518 symbol, we need to copy the reloc into the shared library.
3519 However when linking with -Bsymbolic and this is a global
3520 symbol which is defined in an object we are including in the
3521 link (i.e., DEF_REGULAR is set), then we can resolve the
3522 reloc directly. At this point we have not seen all the input
3523 files, so it is possible that DEF_REGULAR is not set now but
3524 will be set later (it is never cleared). In case of a weak
3525 definition, DEF_REGULAR may be cleared later by a strong
3526 definition in a shared library. We account for that
3527 possibility below by storing information in the relocs_copied
3528 field of the hash table entry. A similar situation occurs
3529 when creating shared libraries and symbol visibility changes
3530 render the symbol local. */
3531
3532 /* No need to do anything if we're not creating a shared object. */
3533 if (! info->shared)
3534 break;
3535
3536 /* We don't need to handle relocs into sections not going into
3537 the "real" output. */
3538 if ((sec->flags & SEC_ALLOC) == 0)
3539 break;
3540
3541 /* We may need to create a reloc section in the dynobj and made room
3542 for this reloc. */
3543 if (sreloc == NULL)
3544 {
3545 sreloc = _bfd_elf_make_dynamic_reloc_section
3546 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3547
3548 if (sreloc == NULL)
3549 return FALSE;
3550 }
3551
3552 if (sec->flags & SEC_READONLY)
3553 info->flags |= DF_TEXTREL;
3554
3555 sreloc->size += sizeof (Elf32_External_Rela);
3556 break;
915e5146
HPN
3557
3558 case R_CRIS_8_PCREL:
3559 case R_CRIS_16_PCREL:
3560 case R_CRIS_32_PCREL:
3561 if (h != NULL)
3562 {
f5385ebf 3563 h->non_got_ref = 1;
915e5146
HPN
3564
3565 /* Make sure a plt entry is created for this symbol if it
3566 turns out to be a function defined by a dynamic object. */
0a4787a0
HPN
3567 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3568 h->plt.refcount++;
915e5146
HPN
3569 }
3570
3571 /* If we are creating a shared library and this is not a local
3572 symbol, we need to copy the reloc into the shared library.
3573 However when linking with -Bsymbolic and this is a global
3574 symbol which is defined in an object we are including in the
3575 link (i.e., DEF_REGULAR is set), then we can resolve the
3576 reloc directly. At this point we have not seen all the input
3577 files, so it is possible that DEF_REGULAR is not set now but
3578 will be set later (it is never cleared). In case of a weak
3579 definition, DEF_REGULAR may be cleared later by a strong
3580 definition in a shared library. We account for that
3581 possibility below by storing information in the relocs_copied
3582 field of the hash table entry. A similar situation occurs
3583 when creating shared libraries and symbol visibility changes
3584 render the symbol local. */
3585
3586 /* No need to do anything if we're not creating a shared object. */
3587 if (! info->shared)
3588 break;
3589
3590 /* We don't need to handle relocs into sections not going into
3591 the "real" output. */
3592 if ((sec->flags & SEC_ALLOC) == 0)
3593 break;
3594
0d08de41
HPN
3595 /* If the symbol is local, then we know already we can
3596 eliminate the reloc. */
3597 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3598 break;
bac23f82 3599
0d08de41
HPN
3600 /* If this is with -Bsymbolic and the symbol isn't weak, and
3601 is defined by an ordinary object (the ones we include in
3602 this shared library) then we can also eliminate the
3603 reloc. See comment above for more eliminable cases which
3604 we can't identify at this time. */
3605 if (info->symbolic
3606 && h->root.type != bfd_link_hash_defweak
3607 && h->def_regular)
3608 break;
915e5146 3609
83bac4b0
NC
3610 /* We may need to create a reloc section in the dynobj and made room
3611 for this reloc. */
915e5146
HPN
3612 if (sreloc == NULL)
3613 {
83bac4b0
NC
3614 sreloc = _bfd_elf_make_dynamic_reloc_section
3615 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
915e5146 3616
83bac4b0 3617 if (sreloc == NULL)
b34976b6 3618 return FALSE;
915e5146
HPN
3619 }
3620
eea6121a 3621 sreloc->size += sizeof (Elf32_External_Rela);
915e5146 3622
0d08de41
HPN
3623 /* We count the number of PC relative relocations we have
3624 entered for this symbol, so that we can discard them
3625 again if the symbol is later defined by a regular object.
3626 We know that h is really a pointer to an
915e5146 3627 elf_cris_link_hash_entry. */
0d08de41
HPN
3628 {
3629 struct elf_cris_link_hash_entry *eh;
3630 struct elf_cris_pcrel_relocs_copied *p;
915e5146 3631
0d08de41 3632 eh = elf_cris_hash_entry (h);
915e5146 3633
0d08de41
HPN
3634 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3635 if (p->section == sreloc)
3636 break;
915e5146 3637
0d08de41
HPN
3638 if (p == NULL)
3639 {
3640 p = ((struct elf_cris_pcrel_relocs_copied *)
3641 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3642 if (p == NULL)
3643 return FALSE;
3644 p->next = eh->pcrel_relocs_copied;
3645 eh->pcrel_relocs_copied = p;
3646 p->section = sreloc;
3647 p->count = 0;
3648 p->r_type = r_type;
3649 }
915e5146 3650
0d08de41
HPN
3651 ++p->count;
3652 }
915e5146
HPN
3653 break;
3654
06c15ad7
HPN
3655 /* This relocation describes the C++ object vtable hierarchy.
3656 Reconstruct it for later use during GC. */
3657 case R_CRIS_GNU_VTINHERIT:
c152c796 3658 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3659 return FALSE;
06c15ad7 3660 break;
a7c10850 3661
06c15ad7
HPN
3662 /* This relocation describes which C++ vtable entries are actually
3663 used. Record for later use during GC. */
3664 case R_CRIS_GNU_VTENTRY:
d17e0c6e
JB
3665 BFD_ASSERT (h != NULL);
3666 if (h != NULL
3667 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 3668 return FALSE;
06c15ad7 3669 break;
4d96d128 3670
100382c7
HPN
3671 case R_CRIS_16_TPREL:
3672 case R_CRIS_32_TPREL:
3673 /* Already warned above, when necessary. */
3674 break;
3675
4d96d128
HPN
3676 default:
3677 /* Other relocs do not appear here. */
3678 bfd_set_error (bfd_error_bad_value);
b34976b6 3679 return FALSE;
06c15ad7
HPN
3680 }
3681 }
a7c10850 3682
b34976b6 3683 return TRUE;
06c15ad7 3684}
4da81684 3685
915e5146
HPN
3686/* Set the sizes of the dynamic sections. */
3687
b34976b6 3688static bfd_boolean
915e5146 3689elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 3690 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN
3691 struct bfd_link_info *info;
3692{
3693 bfd *dynobj;
3694 asection *s;
b34976b6
AM
3695 bfd_boolean plt;
3696 bfd_boolean relocs;
915e5146
HPN
3697
3698 dynobj = elf_hash_table (info)->dynobj;
3699 BFD_ASSERT (dynobj != NULL);
3700
3701 if (elf_hash_table (info)->dynamic_sections_created)
3702 {
3703 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3704 if (info->executable)
915e5146
HPN
3705 {
3706 s = bfd_get_section_by_name (dynobj, ".interp");
3707 BFD_ASSERT (s != NULL);
eea6121a 3708 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
915e5146
HPN
3709 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3710 }
3711 }
3712 else
3713 {
3714 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3715 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3716 elf_cris_adjust_gotplt_to_got,
3717 (PTR) info);
3718
3719 /* We may have created entries in the .rela.got section.
3720 However, if we are not creating the dynamic sections, we will
3721 not actually use these entries. Reset the size of .rela.got,
3722 which will cause it to get stripped from the output file
3723 below. */
3724 s = bfd_get_section_by_name (dynobj, ".rela.got");
3725 if (s != NULL)
eea6121a 3726 s->size = 0;
915e5146
HPN
3727 }
3728
3729 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3730 relative relocs against symbols defined in a regular object. We
3731 allocated space for them in the check_relocs routine, but we will not
3732 fill them in in the relocate_section routine. We also discard space
3733 for relocs that have become for local symbols due to symbol
4d96d128
HPN
3734 visibility changes. For programs, we discard space for relocs for
3735 symbols not referenced by any dynamic object. */
915e5146
HPN
3736 if (info->shared)
3737 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN
3738 elf_cris_discard_excess_dso_dynamics,
3739 (PTR) info);
3740 else
3741 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3742 elf_cris_discard_excess_program_dynamics,
915e5146
HPN
3743 (PTR) info);
3744
3745 /* The check_relocs and adjust_dynamic_symbol entry points have
3746 determined the sizes of the various dynamic sections. Allocate
3747 memory for them. */
b34976b6
AM
3748 plt = FALSE;
3749 relocs = FALSE;
915e5146
HPN
3750 for (s = dynobj->sections; s != NULL; s = s->next)
3751 {
3752 const char *name;
915e5146
HPN
3753
3754 if ((s->flags & SEC_LINKER_CREATED) == 0)
3755 continue;
3756
3757 /* It's OK to base decisions on the section name, because none
3758 of the dynobj section names depend upon the input files. */
3759 name = bfd_get_section_name (dynobj, s);
3760
915e5146
HPN
3761 if (strcmp (name, ".plt") == 0)
3762 {
c456f082
AM
3763 /* Remember whether there is a PLT. */
3764 plt = s->size != 0;
915e5146 3765 }
100382c7
HPN
3766 else if (strcmp (name, ".got.plt") == 0)
3767 {
3768 /* The .got.plt contains the .got header as well as the
3769 actual .got.plt contents. The .got header may contain a
3770 R_CRIS_DTPMOD entry at index 3. */
3771 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3772 ? 8 : 0;
3773 }
0112cd26 3774 else if (CONST_STRNEQ (name, ".rela"))
915e5146 3775 {
100382c7
HPN
3776 if (strcmp (name, ".rela.got") == 0
3777 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3778 && info->shared)
3779 s->size += sizeof (Elf32_External_Rela);
3780
c456f082 3781 if (s->size != 0)
915e5146 3782 {
915e5146
HPN
3783 /* Remember whether there are any reloc sections other
3784 than .rela.plt. */
3785 if (strcmp (name, ".rela.plt") != 0)
b34976b6 3786 relocs = TRUE;
915e5146 3787
915e5146
HPN
3788 /* We use the reloc_count field as a counter if we need
3789 to copy relocs into the output file. */
3790 s->reloc_count = 0;
3791 }
3792 }
0112cd26 3793 else if (! CONST_STRNEQ (name, ".got")
c456f082 3794 && strcmp (name, ".dynbss") != 0)
915e5146
HPN
3795 {
3796 /* It's not one of our sections, so don't allocate space. */
3797 continue;
3798 }
3799
c456f082 3800 if (s->size == 0)
915e5146 3801 {
c456f082
AM
3802 /* If we don't need this section, strip it from the
3803 output file. This is mostly to handle .rela.bss and
3804 .rela.plt. We must create both sections in
3805 create_dynamic_sections, because they must be created
3806 before the linker maps input sections to output
3807 sections. The linker does that before
3808 adjust_dynamic_symbol is called, and it is that
3809 function which decides whether anything needs to go
3810 into these sections. */
8423293d 3811 s->flags |= SEC_EXCLUDE;
915e5146
HPN
3812 continue;
3813 }
3814
c456f082
AM
3815 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3816 continue;
3817
915e5146
HPN
3818 /* Allocate memory for the section contents. We use bfd_zalloc here
3819 in case unused entries are not reclaimed before the section's
3820 contents are written out. This should not happen, but this way
3821 if it does, we will not write out garbage. For reloc sections,
3822 this will make entries have the type R_CRIS_NONE. */
eea6121a 3823 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3824 if (s->contents == NULL)
b34976b6 3825 return FALSE;
915e5146
HPN
3826 }
3827
3828 if (elf_hash_table (info)->dynamic_sections_created)
3829 {
3830 /* Add some entries to the .dynamic section. We fill in the
3831 values later, in elf_cris_finish_dynamic_sections, but we
3832 must add the entries now so that we get the correct size for
3833 the .dynamic section. The DT_DEBUG entry is filled in by the
3834 dynamic linker and used by the debugger. */
dc810e39 3835#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3836 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3837
915e5146
HPN
3838 if (!info->shared)
3839 {
dc810e39 3840 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3841 return FALSE;
915e5146
HPN
3842 }
3843
3844 if (plt)
3845 {
dc810e39
AM
3846 if (!add_dynamic_entry (DT_PLTGOT, 0)
3847 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3848 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3849 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3850 return FALSE;
915e5146
HPN
3851 }
3852
3853 if (relocs)
3854 {
dc810e39
AM
3855 if (!add_dynamic_entry (DT_RELA, 0)
3856 || !add_dynamic_entry (DT_RELASZ, 0)
3857 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3858 return FALSE;
915e5146
HPN
3859 }
3860
99e4ae17 3861 if ((info->flags & DF_TEXTREL) != 0)
915e5146 3862 {
dc810e39 3863 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3864 return FALSE;
915e5146
HPN
3865 info->flags |= DF_TEXTREL;
3866 }
3867 }
dc810e39 3868#undef add_dynamic_entry
915e5146 3869
b34976b6 3870 return TRUE;
915e5146
HPN
3871}
3872
3873/* This function is called via elf_cris_link_hash_traverse if we are
3874 creating a shared object. In the -Bsymbolic case, it discards the
3875 space allocated to copy PC relative relocs against symbols which
3876 are defined in regular objects. For the normal non-symbolic case,
3877 we also discard space for relocs that have become local due to
3878 symbol visibility changes. We allocated space for them in the
3879 check_relocs routine, but we won't fill them in in the
3880 relocate_section routine. */
3881
b34976b6 3882static bfd_boolean
4d96d128 3883elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN
3884 struct elf_cris_link_hash_entry *h;
3885 PTR inf;
3886{
3887 struct elf_cris_pcrel_relocs_copied *s;
3888 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3889
e92d460e
AM
3890 if (h->root.root.type == bfd_link_hash_warning)
3891 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3892
915e5146
HPN
3893 /* If a symbol has been forced local or we have found a regular
3894 definition for the symbolic link case, then we won't be needing
3895 any relocs. */
f5385ebf
AM
3896 if (h->root.def_regular
3897 && (h->root.forced_local
915e5146
HPN
3898 || info->symbolic))
3899 {
3900 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
eea6121a 3901 s->section->size -= s->count * sizeof (Elf32_External_Rela);
0d08de41
HPN
3902
3903 return TRUE;
3904 }
3905
3906 /* If we have accounted for PC-relative relocs for read-only
3907 sections, now is the time to warn for them. We can't do it in
3908 cris_elf_check_relocs, because we don't know the status of all
3909 symbols at that time (and it's common to force symbols local
3910 late). */
3911
3912 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3913 {
3914 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3915
3916 /* FIXME: How do we make this optionally a warning only? */
3917 (*_bfd_error_handler)
3918 (_("%B, section `%A', to symbol `%s':\n"
3919 " relocation %s should not be used"
3920 " in a shared object; recompile with -fPIC"),
3921 s->section->owner,
3922 s->section,
3923 h->root.root.root.string,
3924 cris_elf_howto_table[s->r_type].name);
3925
3926 info->flags |= DF_TEXTREL;
4d96d128
HPN
3927 }
3928
b34976b6 3929 return TRUE;
4d96d128
HPN
3930}
3931
3932/* This function is called via elf_cris_link_hash_traverse if we are *not*
3933 creating a shared object. We discard space for relocs for symbols put
3934 in the .got, but which we found we do not have to resolve at run-time. */
3935
b34976b6 3936static bfd_boolean
4d96d128
HPN
3937elf_cris_discard_excess_program_dynamics (h, inf)
3938 struct elf_cris_link_hash_entry *h;
3939 PTR inf;
3940{
3941 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3942
e92d460e
AM
3943 if (h->root.root.type == bfd_link_hash_warning)
3944 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3945
4d96d128
HPN
3946 /* If we're not creating a shared library and have a symbol which is
3947 referred to by .got references, but the symbol is defined locally,
e4a2175c
HPN
3948 (or rather, not defined by a DSO) then lose the reloc for the .got
3949 (don't allocate room for it). Likewise for relocs for something
3950 for which we create a PLT. */
f5385ebf 3951 if (!h->root.def_dynamic
e4a2175c 3952 || h->root.plt.refcount > 0)
4d96d128 3953 {
100382c7 3954 if (h->reg_got_refcount > 0
4d96d128
HPN
3955 /* The size of this section is only valid and in sync with the
3956 various reference counts if we do dynamic; don't decrement it
3957 otherwise. */
3958 && elf_hash_table (info)->dynamic_sections_created)
3959 {
3960 bfd *dynobj = elf_hash_table (info)->dynobj;
3961 asection *srelgot;
3962
3963 BFD_ASSERT (dynobj != NULL);
99c79b2e 3964
4d96d128
HPN
3965 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3966
3967 BFD_ASSERT (srelgot != NULL);
3968
eea6121a 3969 srelgot->size -= sizeof (Elf32_External_Rela);
4d96d128
HPN
3970 }
3971
3972 /* If the locally-defined symbol isn't used by a DSO, then we don't
3973 have to export it as a dynamic symbol. This was already done for
3974 functions; doing this for all symbols would presumably not
e5dfef09
HPN
3975 introduce new problems. Of course we don't do this if we're
3976 exporting all dynamic symbols. */
0741c7be 3977 if (! info->export_dynamic
77cfaee6 3978 && h->root.dynindx != -1
f5385ebf
AM
3979 && !h->root.def_dynamic
3980 && !h->root.ref_dynamic)
e5dfef09
HPN
3981 {
3982 h->root.dynindx = -1;
3983 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3984 h->root.dynstr_index);
3985 }
915e5146
HPN
3986 }
3987
b34976b6 3988 return TRUE;
915e5146
HPN
3989}
3990
3991/* Reject a file depending on presence and expectation of prefixed
3992 underscores on symbols. */
4da81684 3993
b34976b6 3994static bfd_boolean
4da81684
HPN
3995cris_elf_object_p (abfd)
3996 bfd *abfd;
3997{
bac23f82
HPN
3998 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3999 return FALSE;
4000
4da81684
HPN
4001 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4002 return (bfd_get_symbol_leading_char (abfd) == '_');
4003 else
4004 return (bfd_get_symbol_leading_char (abfd) == 0);
4005}
4006
bac23f82
HPN
4007/* Mark presence or absence of leading underscore. Set machine type
4008 flags from mach type. */
4da81684
HPN
4009
4010static void
4011cris_elf_final_write_processing (abfd, linker)
4012 bfd *abfd;
b34976b6 4013 bfd_boolean linker ATTRIBUTE_UNUSED;
4da81684 4014{
bac23f82
HPN
4015 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4016
4017 e_flags &= ~EF_CRIS_UNDERSCORE;
4da81684 4018 if (bfd_get_symbol_leading_char (abfd) == '_')
bac23f82
HPN
4019 e_flags |= EF_CRIS_UNDERSCORE;
4020
4021 switch (bfd_get_mach (abfd))
4022 {
4023 case bfd_mach_cris_v0_v10:
4024 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4025 break;
4026
4027 case bfd_mach_cris_v10_v32:
4028 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4029 break;
4030
4031 case bfd_mach_cris_v32:
4032 e_flags |= EF_CRIS_VARIANT_V32;
4033 break;
4034
4035 default:
4036 _bfd_abort (__FILE__, __LINE__,
4037 _("Unexpected machine number"));
4038 }
4039
4040 elf_elfheader (abfd)->e_flags = e_flags;
4041}
4042
4043/* Set the mach type from e_flags value. */
4044
4045static bfd_boolean
4046cris_elf_set_mach_from_flags (abfd, flags)
4047 bfd *abfd;
4048 unsigned long flags;
4049{
4050 switch (flags & EF_CRIS_VARIANT_MASK)
4051 {
4052 case EF_CRIS_VARIANT_ANY_V0_V10:
4053 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4054 break;
4055
4056 case EF_CRIS_VARIANT_V32:
4057 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4058 break;
4059
4060 case EF_CRIS_VARIANT_COMMON_V10_V32:
4061 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4062 break;
4063
4064 default:
4065 /* Since we don't recognize them, we obviously can't support them
4066 with this code; we'd have to require that all future handling
4067 would be optional. */
4068 bfd_set_error (bfd_error_wrong_format);
4069 return FALSE;
4070 }
4071
4072 return TRUE;
4da81684
HPN
4073}
4074
4075/* Display the flags field. */
4076
b34976b6 4077static bfd_boolean
4da81684
HPN
4078cris_elf_print_private_bfd_data (abfd, ptr)
4079 bfd *abfd;
4080 PTR ptr;
4081{
4082 FILE *file = (FILE *) ptr;
4083
f12123c0 4084 BFD_ASSERT (abfd != NULL && ptr != NULL);
4da81684
HPN
4085
4086 _bfd_elf_print_private_bfd_data (abfd, ptr);
4087
4088 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4089
4090 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4091 fprintf (file, _(" [symbols have a _ prefix]"));
bac23f82
HPN
4092 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4093 == EF_CRIS_VARIANT_COMMON_V10_V32)
4094 fprintf (file, _(" [v10 and v32]"));
4095 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4096 == EF_CRIS_VARIANT_V32)
4097 fprintf (file, _(" [v32]"));
4da81684
HPN
4098
4099 fputc ('\n', file);
b34976b6 4100 return TRUE;
4da81684
HPN
4101}
4102
4103/* Don't mix files with and without a leading underscore. */
4104
b34976b6 4105static bfd_boolean
4da81684
HPN
4106cris_elf_merge_private_bfd_data (ibfd, obfd)
4107 bfd *ibfd;
4108 bfd *obfd;
4109{
bac23f82 4110 int imach, omach;
4da81684 4111
82e51918 4112 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4113 return FALSE;
4da81684
HPN
4114
4115 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4116 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4117 return TRUE;
4da81684 4118
bac23f82
HPN
4119 imach = bfd_get_mach (ibfd);
4120
4da81684
HPN
4121 if (! elf_flags_init (obfd))
4122 {
4123 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 4124 elf_flags_init (obfd) = TRUE;
4da81684 4125
bac23f82
HPN
4126 /* We ignore the linker-set mach, and instead set it according to
4127 the first input file. This would also happen if we could
4128 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4129 This allows us to keep the same linker config across
4130 cris(v0..v10) and crisv32. The drawback is that we can't force
4131 the output type, which might be a sane thing to do for a
4132 v10+v32 compatibility object. */
4133 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4134 return FALSE;
4da81684
HPN
4135 }
4136
bac23f82
HPN
4137 if (bfd_get_symbol_leading_char (ibfd)
4138 != bfd_get_symbol_leading_char (obfd))
4da81684
HPN
4139 {
4140 (*_bfd_error_handler)
bac23f82 4141 (bfd_get_symbol_leading_char (ibfd) == '_'
d003868e
AM
4142 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4143 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4144 ibfd);
4da81684 4145 bfd_set_error (bfd_error_bad_value);
b34976b6 4146 return FALSE;
4da81684
HPN
4147 }
4148
bac23f82
HPN
4149 omach = bfd_get_mach (obfd);
4150
4151 if (imach != omach)
4152 {
4153 /* We can get an incompatible combination only if either is
4154 bfd_mach_cris_v32, and the other one isn't compatible. */
4155 if ((imach == bfd_mach_cris_v32
4156 && omach != bfd_mach_cris_v10_v32)
4157 || (omach == bfd_mach_cris_v32
4158 && imach != bfd_mach_cris_v10_v32))
4159 {
4160 (*_bfd_error_handler)
4161 ((imach == bfd_mach_cris_v32)
4162 ? _("%B contains CRIS v32 code, incompatible"
4163 " with previous objects")
4164 : _("%B contains non-CRIS-v32 code, incompatible"
4165 " with previous objects"),
4166 ibfd);
4167 bfd_set_error (bfd_error_bad_value);
4168 return FALSE;
4169 }
4170
4171 /* We don't have to check the case where the input is compatible
4172 with v10 and v32, because the output is already known to be set
4173 to the other (compatible) mach. */
4174 if (omach == bfd_mach_cris_v10_v32
4175 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4176 return FALSE;
4177 }
4178
b34976b6 4179 return TRUE;
4da81684 4180}
99e4ae17 4181
bac23f82
HPN
4182/* Do side-effects of e_flags copying to obfd. */
4183
4184static bfd_boolean
4185cris_elf_copy_private_bfd_data (ibfd, obfd)
4186 bfd *ibfd;
4187 bfd *obfd;
4188{
4189 /* Call the base function. */
4190 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4191 return FALSE;
4192
4193 /* If output is big-endian for some obscure reason, stop here. */
4194 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4195 return FALSE;
4196
4197 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4198 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4199 return TRUE;
4200
4201 /* Do what we really came here for. */
4202 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4203}
99e4ae17
AJ
4204
4205static enum elf_reloc_type_class
f51e552e
AM
4206elf_cris_reloc_type_class (rela)
4207 const Elf_Internal_Rela *rela;
99e4ae17 4208{
100382c7
HPN
4209 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4210 switch (r_type)
99e4ae17
AJ
4211 {
4212 case R_CRIS_RELATIVE:
4213 return reloc_class_relative;
4214 case R_CRIS_JUMP_SLOT:
4215 return reloc_class_plt;
4216 case R_CRIS_COPY:
4217 return reloc_class_copy;
4218 default:
4219 return reloc_class_normal;
4220 }
4221}
100382c7
HPN
4222
4223/* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4224 two GOT entries from three types with two different sizes. We handle
4225 it as a single entry, so we can use the regular offset-calculation
4226 machinery. */
4227
4228static bfd_vma
4229elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4230 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4231 struct elf_link_hash_entry *hr,
4232 bfd *ibfd,
4233 unsigned long symndx)
4234{
4235 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
100382c7
HPN
4236 bfd_vma eltsiz = 0;
4237
4238 /* We may have one regular GOT entry or up to two TLS GOT
4239 entries. */
4240 if (h == NULL)
4241 {
b2e254f9 4242 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
100382c7
HPN
4243 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4244
4245 BFD_ASSERT (local_got_refcounts != NULL);
4246
4247 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4248 {
4249 /* We can't have a variable referred to both as a regular
4250 variable and through TLS relocs. */
4251 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4252 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4253 return 4;
4254 }
4255
4256 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4257 eltsiz += 8;
4258
4259 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4260 eltsiz += 4;
4261 }
4262 else
4263 {
4264 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4265 if (hh->reg_got_refcount > 0)
4266 {
4267 /* The actual error-on-input is emitted elsewhere. */
4268 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4269 return 4;
4270 }
4271
4272 if (hh->dtp_refcount > 0)
4273 eltsiz += 8;
4274
4275 if (hh->tprel_refcount > 0)
4276 eltsiz += 4;
4277 }
4278
b2e254f9
HPN
4279 /* We're only called when h->got.refcount is non-zero, so we must
4280 have a non-zero size. */
4281 BFD_ASSERT (eltsiz != 0);
100382c7
HPN
4282 return eltsiz;
4283}
06c15ad7
HPN
4284\f
4285#define ELF_ARCH bfd_arch_cris
4286#define ELF_MACHINE_CODE EM_CRIS
4287#define ELF_MAXPAGESIZE 0x2000
4288
4289#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4290#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 4291#define elf_symbol_leading_char 0
06c15ad7
HPN
4292
4293#define elf_info_to_howto_rel NULL
4294#define elf_info_to_howto cris_info_to_howto_rela
4295#define elf_backend_relocate_section cris_elf_relocate_section
4296#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4297#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4298#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN
4299#define elf_backend_grok_prstatus cris_elf_grok_prstatus
4300#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN
4301
4302#define elf_backend_can_gc_sections 1
51b64d56 4303#define elf_backend_can_refcount 1
06c15ad7 4304
4da81684
HPN
4305#define elf_backend_object_p cris_elf_object_p
4306#define elf_backend_final_write_processing \
4307 cris_elf_final_write_processing
4308#define bfd_elf32_bfd_print_private_bfd_data \
4309 cris_elf_print_private_bfd_data
4310#define bfd_elf32_bfd_merge_private_bfd_data \
4311 cris_elf_merge_private_bfd_data
bac23f82
HPN
4312#define bfd_elf32_bfd_copy_private_bfd_data \
4313 cris_elf_copy_private_bfd_data
4da81684 4314
06c15ad7 4315#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
157090f7 4316#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
06c15ad7 4317
915e5146
HPN
4318#define bfd_elf32_bfd_link_hash_table_create \
4319 elf_cris_link_hash_table_create
4320#define elf_backend_adjust_dynamic_symbol \
4321 elf_cris_adjust_dynamic_symbol
237bc7f0
HPN
4322#define elf_backend_copy_indirect_symbol \
4323 elf_cris_copy_indirect_symbol
915e5146
HPN
4324#define elf_backend_size_dynamic_sections \
4325 elf_cris_size_dynamic_sections
74541ad4 4326#define elf_backend_init_index_section _bfd_elf_init_1_index_section
915e5146
HPN
4327#define elf_backend_finish_dynamic_symbol \
4328 elf_cris_finish_dynamic_symbol
4329#define elf_backend_finish_dynamic_sections \
4330 elf_cris_finish_dynamic_sections
4331#define elf_backend_create_dynamic_sections \
4332 _bfd_elf_create_dynamic_sections
4333#define bfd_elf32_bfd_final_link \
c152c796 4334 bfd_elf_gc_common_final_link
915e5146 4335#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 4336#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN
4337
4338#define elf_backend_want_got_plt 1
4339#define elf_backend_plt_readonly 1
4340#define elf_backend_want_plt_sym 0
4341#define elf_backend_got_header_size 12
100382c7 4342#define elf_backend_got_elt_size elf_cris_got_elt_size
915e5146 4343
06c15ad7
HPN
4344/* Later, we my want to optimize RELA entries into REL entries for dynamic
4345 linking and libraries (if it's a win of any significance). Until then,
4346 take the easy route. */
4347#define elf_backend_may_use_rel_p 0
4348#define elf_backend_may_use_rela_p 1
f0fe0e16 4349#define elf_backend_rela_normal 1
06c15ad7
HPN
4350
4351#include "elf32-target.h"
4da81684 4352
4da81684
HPN
4353#undef TARGET_LITTLE_SYM
4354#undef TARGET_LITTLE_NAME
4355#undef elf_symbol_leading_char
4356
4357#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4358#define TARGET_LITTLE_NAME "elf32-us-cris"
4359#define elf_symbol_leading_char '_'
16cecee5
L
4360#undef elf32_bed
4361#define elf32_bed elf32_us_cris_bed
4da81684
HPN
4362
4363#include "elf32-target.h"
This page took 0.707407 seconds and 4 git commands to generate.