* elfxx-target.h: Remove PTR cast.
[deliverable/binutils-gdb.git] / bfd / elf32-sh64.c
CommitLineData
ef230218 1/* SuperH SH64-specific support for 32-bit ELF
571fe01f 2 Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
fbca6ad9
AO
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#define SH64_ELF
21
22#include "bfd.h"
23#include "sysdep.h"
24#include "elf-bfd.h"
25#include "../opcodes/sh64-opc.h"
f0abc2a1 26#include "elf32-sh64.h"
fbca6ad9
AO
27
28/* Add a suffix for datalabel indirection symbols. It must not match any
29 other symbols; user symbols with or without version or other
30 decoration. It must only be used internally and not emitted by any
31 means. */
32#define DATALABEL_SUFFIX " DL"
33
34/* Used to hold data for function called through bfd_map_over_sections. */
35struct sh64_find_section_vma_data
36 {
37 asection *section;
38 bfd_vma addr;
39 };
40
f0abc2a1 41static bfd_boolean sh64_elf_new_section_hook
09fd220b 42 (bfd *, asection *);
b34976b6 43static bfd_boolean sh64_elf_copy_private_data
09fd220b 44 (bfd *, bfd *);
b34976b6 45static bfd_boolean sh64_elf_merge_private_data
09fd220b 46 (bfd *, bfd *);
b34976b6 47static bfd_boolean sh64_elf_fake_sections
09fd220b 48 (bfd *, Elf_Internal_Shdr *, asection *);
b34976b6 49static bfd_boolean sh64_elf_set_private_flags
09fd220b 50 (bfd *, flagword);
b34976b6 51static bfd_boolean sh64_elf_set_mach_from_flags
09fd220b 52 (bfd *);
b34976b6 53static bfd_boolean shmedia_prepare_reloc
09fd220b
KK
54 (struct bfd_link_info *, bfd *, asection *, bfd_byte *,
55 const Elf_Internal_Rela *, bfd_vma *);
b34976b6 56static int sh64_elf_get_symbol_type
09fd220b 57 (Elf_Internal_Sym *, int);
b34976b6 58static bfd_boolean sh64_elf_add_symbol_hook
09fd220b
KK
59 (bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, const char **,
60 flagword *, asection **, bfd_vma *);
b34976b6 61static bfd_boolean sh64_elf_link_output_symbol_hook
09fd220b
KK
62 (bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
63 asection *);
b34976b6 64static bfd_boolean sh64_backend_section_from_shdr
09fd220b 65 (bfd *, Elf_Internal_Shdr *, const char *);
b34976b6 66static void sh64_elf_final_write_processing
09fd220b 67 (bfd *, bfd_boolean);
b34976b6 68static bfd_boolean sh64_bfd_elf_copy_private_section_data
09fd220b 69 (bfd *, asection *, bfd *, asection *);
b34976b6 70static void sh64_find_section_for_address
09fd220b 71 (bfd *, asection *, void *);
fbca6ad9
AO
72
73/* Let elf32-sh.c handle the "bfd_" definitions, so we only have to
74 intrude with an #ifndef around the function definition. */
75#define sh_elf_copy_private_data sh64_elf_copy_private_data
76#define sh_elf_merge_private_data sh64_elf_merge_private_data
77#define sh_elf_set_private_flags sh64_elf_set_private_flags
78/* Typo in elf32-sh.c (and unlinear name). */
79#define bfd_elf32_bfd_set_private_flags sh64_elf_set_private_flags
80#define sh_elf_set_mach_from_flags sh64_elf_set_mach_from_flags
81
82#define elf_backend_sign_extend_vma 1
83#define elf_backend_fake_sections sh64_elf_fake_sections
84#define elf_backend_get_symbol_type sh64_elf_get_symbol_type
85#define elf_backend_add_symbol_hook sh64_elf_add_symbol_hook
86#define elf_backend_link_output_symbol_hook \
87 sh64_elf_link_output_symbol_hook
88#define elf_backend_final_write_processing sh64_elf_final_write_processing
89#define elf_backend_section_from_shdr sh64_backend_section_from_shdr
2f89ff8d 90#define elf_backend_special_sections sh64_elf_special_sections
fbca6ad9 91
f0abc2a1
AM
92#define bfd_elf32_new_section_hook sh64_elf_new_section_hook
93
fbca6ad9
AO
94/* For objcopy, we need to set up sh64_elf_section_data (asection *) from
95 incoming section flags. This is otherwise done in sh64elf.em when
96 linking or tc-sh64.c when assembling. */
97#define bfd_elf32_bfd_copy_private_section_data \
98 sh64_bfd_elf_copy_private_section_data
99
100/* This COFF-only function (only compiled with COFF support, making
b34976b6
AM
101 ELF-only chains problematic) returns TRUE early for SH4, so let's just
102 define it TRUE here. */
103#define _bfd_sh_align_load_span(a,b,c,d,e,f,g,h,i,j) TRUE
fbca6ad9 104
fbca6ad9
AO
105#define GOT_BIAS (-((long)-32768))
106#define INCLUDE_SHMEDIA
107#include "elf32-sh.c"
108
f0abc2a1
AM
109/* Tack some extra info on struct bfd_elf_section_data. */
110
111static bfd_boolean
09fd220b 112sh64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1
AM
113{
114 struct _sh64_elf_section_data *sdata;
115 bfd_size_type amt = sizeof (*sdata);
116
117 sdata = (struct _sh64_elf_section_data *) bfd_zalloc (abfd, amt);
118 if (sdata == NULL)
119 return FALSE;
09fd220b 120 sec->used_by_bfd = sdata;
f0abc2a1
AM
121
122 return _bfd_elf_new_section_hook (abfd, sec);
123}
124
fbca6ad9
AO
125/* Set the SHF_SH5_ISA32 flag for ISA SHmedia code sections, and pass
126 through SHT_SH5_CR_SORTED on a sorted .cranges section. */
127
b34976b6 128bfd_boolean
09fd220b
KK
129sh64_elf_fake_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
130 Elf_Internal_Shdr *elf_section_hdr,
131 asection *asect)
fbca6ad9 132{
f0abc2a1 133 if (sh64_elf_section_data (asect)->sh64_info != NULL)
fbca6ad9 134 elf_section_hdr->sh_flags
f0abc2a1 135 |= sh64_elf_section_data (asect)->sh64_info->contents_flags;
fbca6ad9
AO
136
137 /* If this section has the SEC_SORT_ENTRIES flag set, it is a sorted
138 .cranges section passing through objcopy. */
139 if ((bfd_get_section_flags (output_bfd, asect) & SEC_SORT_ENTRIES) != 0
140 && strcmp (bfd_get_section_name (output_bfd, asect),
141 SH64_CRANGES_SECTION_NAME) == 0)
142 elf_section_hdr->sh_type = SHT_SH5_CR_SORTED;
143
b34976b6 144 return TRUE;
fbca6ad9
AO
145}
146
b34976b6 147static bfd_boolean
09fd220b 148sh64_elf_set_mach_from_flags (bfd *abfd)
fbca6ad9
AO
149{
150 flagword flags = elf_elfheader (abfd)->e_flags;
151 asection *cranges;
152
153 switch (flags & EF_SH_MACH_MASK)
154 {
155 case EF_SH5:
156 /* These are fit to execute on SH5. Just one but keep the switch
157 construct to make additions easy. */
158 bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh5);
159 break;
160
161 default:
162 bfd_set_error (bfd_error_wrong_format);
b34976b6 163 return FALSE;
fbca6ad9
AO
164 }
165
166 /* We also need to set SEC_DEBUGGING on an incoming .cranges section.
167 We could have used elf_backend_section_flags if it had given us the
168 section name; the bfd_section member in the header argument is not
169 set at the point of the call. FIXME: Find out whether that is by
170 undocumented design or a bug. */
171 cranges = bfd_get_section_by_name (abfd, SH64_CRANGES_SECTION_NAME);
172 if (cranges != NULL
173 && ! bfd_set_section_flags (abfd, cranges,
174 bfd_get_section_flags (abfd, cranges)
175 | SEC_DEBUGGING))
b34976b6 176 return FALSE;
fbca6ad9 177
b34976b6 178 return TRUE;
fbca6ad9
AO
179}
180
b34976b6 181static bfd_boolean
09fd220b 182sh64_elf_copy_private_data (bfd * ibfd, bfd * obfd)
fbca6ad9
AO
183{
184 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
185 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 186 return TRUE;
fbca6ad9
AO
187
188 BFD_ASSERT (!elf_flags_init (obfd)
189 || (elf_elfheader (obfd)->e_flags
190 == elf_elfheader (ibfd)->e_flags));
191
192 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
b34976b6 193 return TRUE;
fbca6ad9
AO
194}
195
b34976b6 196static bfd_boolean
09fd220b 197sh64_elf_merge_private_data (bfd *ibfd, bfd *obfd)
fbca6ad9
AO
198{
199 flagword old_flags, new_flags;
200
82e51918 201 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 202 return FALSE;
fbca6ad9
AO
203
204 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
205 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 206 return TRUE;
fbca6ad9
AO
207
208 if (bfd_get_arch_size (ibfd) != bfd_get_arch_size (obfd))
209 {
210 const char *msg;
211
212 if (bfd_get_arch_size (ibfd) == 32
213 && bfd_get_arch_size (obfd) == 64)
214 msg = _("%s: compiled as 32-bit object and %s is 64-bit");
215 else if (bfd_get_arch_size (ibfd) == 64
216 && bfd_get_arch_size (obfd) == 32)
217 msg = _("%s: compiled as 64-bit object and %s is 32-bit");
218 else
219 msg = _("%s: object size does not match that of target %s");
220
221 (*_bfd_error_handler) (msg, bfd_get_filename (ibfd),
222 bfd_get_filename (obfd));
223 bfd_set_error (bfd_error_wrong_format);
b34976b6 224 return FALSE;
fbca6ad9
AO
225 }
226
227 old_flags = elf_elfheader (obfd)->e_flags;
228 new_flags = elf_elfheader (ibfd)->e_flags;
229 if (! elf_flags_init (obfd))
230 {
231 /* This happens when ld starts out with a 'blank' output file. */
b34976b6 232 elf_flags_init (obfd) = TRUE;
fbca6ad9
AO
233 elf_elfheader (obfd)->e_flags = old_flags = new_flags;
234 }
235 /* We don't allow linking in non-SH64 code. */
236 else if ((new_flags & EF_SH_MACH_MASK) != EF_SH5)
237 {
238 (*_bfd_error_handler)
239 ("%s: uses non-SH64 instructions while previous modules use SH64 instructions",
240 bfd_get_filename (ibfd));
241 bfd_set_error (bfd_error_bad_value);
b34976b6 242 return FALSE;
fbca6ad9
AO
243 }
244
245 /* I can't think of anything sane other than old_flags being EF_SH5 and
246 that we need to preserve that. */
247 elf_elfheader (obfd)->e_flags = old_flags;
248 return sh64_elf_set_mach_from_flags (obfd);
249}
250
251/* Handle a SH64-specific section when reading an object file. This
252 is called when elfcode.h finds a section with an unknown type.
253
254 We only recognize SHT_SH5_CR_SORTED, on the .cranges section. */
255
b34976b6 256bfd_boolean
09fd220b
KK
257sh64_backend_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
258 const char *name)
fbca6ad9
AO
259{
260 flagword flags = 0;
261
262 /* We do like MIPS with a bit switch for recognized types, and returning
b34976b6 263 FALSE for a recognized section type with an unexpected name. Right
fbca6ad9
AO
264 now we only have one recognized type, but that might change. */
265 switch (hdr->sh_type)
266 {
267 case SHT_SH5_CR_SORTED:
268 if (strcmp (name, SH64_CRANGES_SECTION_NAME) != 0)
b34976b6 269 return FALSE;
fbca6ad9
AO
270
271 /* We set the SEC_SORT_ENTRIES flag so it can be passed on to
272 sh64_elf_fake_sections, keeping SHT_SH5_CR_SORTED if this object
273 passes through objcopy. Perhaps it is brittle; the flag can
274 suddenly be used by other BFD parts, but it seems not really used
275 anywhere at the moment. */
276 flags = SEC_DEBUGGING | SEC_SORT_ENTRIES;
277 break;
278
279 default:
b34976b6 280 return FALSE;
fbca6ad9
AO
281 }
282
283 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 284 return FALSE;
fbca6ad9
AO
285
286 if (flags
287 && ! bfd_set_section_flags (abfd, hdr->bfd_section,
288 bfd_get_section_flags (abfd,
289 hdr->bfd_section)
290 | flags))
b34976b6 291 return FALSE;
fbca6ad9 292
b34976b6 293 return TRUE;
fbca6ad9
AO
294}
295
296/* In contrast to sh64_backend_section_from_shdr, this is called for all
297 sections, but only when copying sections, not when linking or
298 assembling. We need to set up the sh64_elf_section_data (asection *)
299 structure for the SH64 ELF section flags to be copied correctly. */
300
b34976b6 301bfd_boolean
09fd220b
KK
302sh64_bfd_elf_copy_private_section_data (bfd *ibfd, asection *isec,
303 bfd *obfd, asection *osec)
fbca6ad9
AO
304{
305 struct sh64_section_data *sh64_sec_data;
306
307 if (ibfd->xvec->flavour != bfd_target_elf_flavour
308 || obfd->xvec->flavour != bfd_target_elf_flavour)
b34976b6 309 return TRUE;
fbca6ad9
AO
310
311 if (! _bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec))
b34976b6 312 return FALSE;
fbca6ad9 313
f0abc2a1 314 sh64_sec_data = sh64_elf_section_data (isec)->sh64_info;
fbca6ad9
AO
315 if (sh64_sec_data == NULL)
316 {
317 sh64_sec_data = bfd_zmalloc (sizeof (struct sh64_section_data));
318
319 if (sh64_sec_data == NULL)
b34976b6 320 return FALSE;
fbca6ad9
AO
321
322 sh64_sec_data->contents_flags
323 = (elf_section_data (isec)->this_hdr.sh_flags
324 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED));
325
f0abc2a1 326 sh64_elf_section_data (osec)->sh64_info = sh64_sec_data;
fbca6ad9
AO
327 }
328
b34976b6 329 return TRUE;
fbca6ad9
AO
330}
331
332/* Function to keep SH64 specific file flags. */
333
b34976b6 334static bfd_boolean
09fd220b 335sh64_elf_set_private_flags (bfd *abfd, flagword flags)
fbca6ad9
AO
336{
337 BFD_ASSERT (! elf_flags_init (abfd)
338 || elf_elfheader (abfd)->e_flags == flags);
339
340 elf_elfheader (abfd)->e_flags = flags;
b34976b6 341 elf_flags_init (abfd) = TRUE;
fbca6ad9
AO
342 return sh64_elf_set_mach_from_flags (abfd);
343}
344
345/* Called when writing out an object file to decide the type of a symbol. */
346
347static int
09fd220b 348sh64_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
fbca6ad9
AO
349{
350 if (ELF_ST_TYPE (elf_sym->st_info) == STT_DATALABEL)
351 return STT_DATALABEL;
352
353 return type;
354}
355
356/* Hook called by the linker routine which adds symbols from an object
357 file. We must make indirect symbols for undefined symbols marked with
358 STT_DATALABEL, so relocations passing them will pick up that attribute
359 and neutralize STO_SH5_ISA32 found on the symbol definition.
360
361 There is a problem, though: We want to fill in the hash-table entry for
362 this symbol and signal to the caller that no further processing is
363 needed. But we don't have the index for this hash-table entry. We
364 rely here on that the current entry is the first hash-entry with NULL,
365 which seems brittle. Also, iterating over the hash-table to find that
366 entry is a linear operation on the number of symbols in this input
367 file, and this function should take constant time, so that's not good
368 too. Only comfort is that DataLabel references should only be found in
369 hand-written assembly code and thus be rare. FIXME: Talk maintainers
370 into adding an option to elf_add_symbol_hook (preferably) for the index
371 or the hash entry, alternatively adding the index to Elf_Internal_Sym
372 (not so good). */
373
b34976b6 374static bfd_boolean
09fd220b
KK
375sh64_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
376 const Elf_Internal_Sym *sym, const char **namep,
377 flagword *flagsp ATTRIBUTE_UNUSED,
378 asection **secp, bfd_vma *valp)
fbca6ad9
AO
379{
380 /* We want to do this for relocatable as well as final linking. */
4ab82700
AM
381 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL
382 && info->hash->creator->flavour == bfd_target_elf_flavour)
fbca6ad9
AO
383 {
384 struct elf_link_hash_entry *h;
385
1049f94e 386 /* For relocatable links, we register the DataLabel sym in its own
fbca6ad9
AO
387 right, and tweak the name when it's output. Otherwise, we make
388 an indirect symbol of it. */
389 flagword flags
1049f94e 390 = info->relocatable || info->emitrelocations
fbca6ad9
AO
391 ? BSF_GLOBAL : BSF_GLOBAL | BSF_INDIRECT;
392
393 char *dl_name
394 = bfd_malloc (strlen (*namep) + sizeof (DATALABEL_SUFFIX));
395 struct elf_link_hash_entry ** sym_hash = elf_sym_hashes (abfd);
396
397 BFD_ASSERT (sym_hash != NULL);
398
399 /* Allocation may fail. */
400 if (dl_name == NULL)
b34976b6 401 return FALSE;
fbca6ad9
AO
402
403 strcpy (dl_name, *namep);
404 strcat (dl_name, DATALABEL_SUFFIX);
405
406 h = (struct elf_link_hash_entry *)
b34976b6 407 bfd_link_hash_lookup (info->hash, dl_name, FALSE, FALSE, FALSE);
fbca6ad9
AO
408
409 if (h == NULL)
410 {
411 /* No previous datalabel symbol. Make one. */
14a793b2 412 struct bfd_link_hash_entry *bh = NULL;
9c5bfbb7 413 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
14a793b2 414
fbca6ad9
AO
415 if (! _bfd_generic_link_add_one_symbol (info, abfd, dl_name,
416 flags, *secp, *valp,
b34976b6 417 *namep, FALSE,
14a793b2 418 bed->collect, &bh))
fbca6ad9
AO
419 {
420 free (dl_name);
b34976b6 421 return FALSE;
fbca6ad9
AO
422 }
423
14a793b2 424 h = (struct elf_link_hash_entry *) bh;
fbca6ad9
AO
425 h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
426 h->type = STT_DATALABEL;
427 }
428 else
429 /* If a new symbol was created, it holds the allocated name.
430 Otherwise, we don't need it anymore and should deallocate it. */
431 free (dl_name);
432
433 if (h->type != STT_DATALABEL
1049f94e 434 || ((info->relocatable || info->emitrelocations)
fbca6ad9 435 && h->root.type != bfd_link_hash_undefined)
1049f94e 436 || (! info->relocatable && !info->emitrelocations
fbca6ad9
AO
437 && h->root.type != bfd_link_hash_indirect))
438 {
439 /* Make sure we don't get confused on invalid input. */
440 (*_bfd_error_handler)
441 (_("%s: encountered datalabel symbol in input"),
442 bfd_get_filename (abfd));
443 bfd_set_error (bfd_error_bad_value);
b34976b6 444 return FALSE;
fbca6ad9
AO
445 }
446
447 /* Now find the hash-table slot for this entry and fill it in. */
448 while (*sym_hash != NULL)
449 sym_hash++;
450 *sym_hash = h;
451
452 /* Signal to caller to skip this symbol - we've handled it. */
453 *namep = NULL;
454 }
455
b34976b6 456 return TRUE;
fbca6ad9
AO
457}
458
459/* This hook function is called before the linker writes out a global
460 symbol. For relocatable links, DataLabel symbols will be present in
461 linker output. We cut off the special suffix on those symbols, so the
462 right name appears in the output.
463
464 When linking and emitting relocations, there can appear global symbols
465 that are not referenced by relocs, but rather only implicitly through
466 DataLabel references, a relation that is not visible to the linker.
467 Since no stripping of global symbols in done when doing such linking,
468 we don't need to look up and make sure to emit the main symbol for each
469 DataLabel symbol. */
470
b34976b6 471bfd_boolean
09fd220b
KK
472sh64_elf_link_output_symbol_hook (bfd *abfd ATTRIBUTE_UNUSED,
473 struct bfd_link_info *info,
474 const char *cname,
475 Elf_Internal_Sym *sym,
476 asection *input_sec ATTRIBUTE_UNUSED)
fbca6ad9
AO
477{
478 char *name = (char *) cname;
479
1049f94e 480 if (info->relocatable || info->emitrelocations)
fbca6ad9
AO
481 {
482 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL)
483 name[strlen (name) - strlen (DATALABEL_SUFFIX)] = 0;
484 }
485
b34976b6 486 return TRUE;
fbca6ad9
AO
487}
488
489/* Check a SH64-specific reloc and put the value to relocate to into
490 RELOCATION, ready to pass to _bfd_final_link_relocate. Return FALSE if
491 bad value, TRUE if ok. */
492
b34976b6 493static bfd_boolean
09fd220b
KK
494shmedia_prepare_reloc (struct bfd_link_info *info, bfd *abfd,
495 asection *input_section, bfd_byte *contents,
496 const Elf_Internal_Rela *rel, bfd_vma *relocation)
fbca6ad9
AO
497{
498 bfd_vma disp, dropped;
499
500 switch (ELF32_R_TYPE (rel->r_info))
501 {
502 case R_SH_PT_16:
503 /* Check the lowest bit of the destination field. If it is 1, we
504 check the ISA type of the destination (i.e. the low bit of the
505 "relocation" value, and emit an error if the instruction does not
506 match). If it is 0, we change a PTA to PTB. There should never
507 be a PTB that should change to a PTA; that indicates a toolchain
508 error; a mismatch with GAS. */
509 {
510 char *msg = NULL;
511 bfd_vma insn = bfd_get_32 (abfd, contents + rel->r_offset);
512
513 if (insn & (1 << 10))
514 {
515 /* Check matching insn and ISA (address of target). */
516 if ((insn & SHMEDIA_PTB_BIT) != 0
517 && ((*relocation + rel->r_addend) & 1) != 0)
518 msg = _("PTB mismatch: a SHmedia address (bit 0 == 1)");
519 else if ((insn & SHMEDIA_PTB_BIT) == 0
520 && ((*relocation + rel->r_addend) & 1) == 0)
521 msg = _("PTA mismatch: a SHcompact address (bit 0 == 0)");
522
523 if (msg != NULL
524 && ! ((*info->callbacks->reloc_dangerous)
525 (info, msg, abfd, input_section,
526 rel->r_offset)))
b34976b6 527 return FALSE;
fbca6ad9
AO
528 }
529 else
530 {
531 /* We shouldn't get here with a PTB insn and a R_SH_PT_16. It
532 means GAS output does not match expectations; a PTA or PTB
533 expressed as such (or a PT found at assembly to be PTB)
534 would match the test above, and PT expansion with an
535 unknown destination (or when relaxing) will get us here. */
536 if ((insn & SHMEDIA_PTB_BIT) != 0)
537 {
538 (*_bfd_error_handler)
539 (_("%s: GAS error: unexpected PTB insn with R_SH_PT_16"),
540 bfd_get_filename (input_section->owner));
b34976b6 541 return FALSE;
fbca6ad9
AO
542 }
543
544 /* Change the PTA to a PTB, if destination indicates so. */
545 if (((*relocation + rel->r_addend) & 1) == 0)
546 bfd_put_32 (abfd, insn | SHMEDIA_PTB_BIT,
547 contents + rel->r_offset);
548 }
549 }
550
551 case R_SH_SHMEDIA_CODE:
552 case R_SH_DIR5U:
553 case R_SH_DIR6S:
554 case R_SH_DIR6U:
555 case R_SH_DIR10S:
556 case R_SH_DIR10SW:
557 case R_SH_DIR10SL:
558 case R_SH_DIR10SQ:
559 case R_SH_IMMS16:
560 case R_SH_IMMU16:
561 case R_SH_IMM_LOW16:
562 case R_SH_IMM_LOW16_PCREL:
563 case R_SH_IMM_MEDLOW16:
564 case R_SH_IMM_MEDLOW16_PCREL:
565 case R_SH_IMM_MEDHI16:
566 case R_SH_IMM_MEDHI16_PCREL:
567 case R_SH_IMM_HI16:
568 case R_SH_IMM_HI16_PCREL:
569 case R_SH_64:
570 case R_SH_64_PCREL:
571 break;
572
573 default:
b34976b6 574 return FALSE;
fbca6ad9
AO
575 }
576
577 disp = (*relocation & 0xf);
578 dropped = 0;
579 switch (ELF32_R_TYPE (rel->r_info))
580 {
581 case R_SH_DIR10SW: dropped = disp & 1; break;
582 case R_SH_DIR10SL: dropped = disp & 3; break;
583 case R_SH_DIR10SQ: dropped = disp & 7; break;
584 }
585 if (dropped != 0)
586 {
587 (*_bfd_error_handler)
588 (_("%s: error: unaligned relocation type %d at %08x reloc %08x\n"),
589 bfd_get_filename (input_section->owner), ELF32_R_TYPE (rel->r_info),
590 (unsigned)rel->r_offset, (unsigned)relocation);
b34976b6 591 return FALSE;
fbca6ad9
AO
592 }
593
b34976b6 594 return TRUE;
fbca6ad9
AO
595}
596
597/* Helper function to locate the section holding a certain address. This
598 is called via bfd_map_over_sections. */
599
600static void
09fd220b
KK
601sh64_find_section_for_address (bfd *abfd ATTRIBUTE_UNUSED,
602 asection *section, void *data)
fbca6ad9
AO
603{
604 bfd_vma vma;
605 bfd_size_type size;
606 struct sh64_find_section_vma_data *fsec_datap
607 = (struct sh64_find_section_vma_data *) data;
608
609 /* Return if already found. */
610 if (fsec_datap->section)
611 return;
612
613 /* If this section isn't part of the addressable contents, skip it. */
614 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
615 return;
616
617 vma = bfd_get_section_vma (abfd, section);
618 if (fsec_datap->addr < vma)
619 return;
620
621 /* FIXME: section->reloc_done isn't set properly; a generic buglet
622 preventing us from using bfd_get_section_size_after_reloc. */
623 size
624 = section->_cooked_size ? section->_cooked_size : section->_raw_size;
625
626 if (fsec_datap->addr >= vma + size)
627 return;
628
629 fsec_datap->section = section;
630}
631
632/* Make sure to write out the generated entries in the .cranges section
633 when doing partial linking, and set bit 0 on the entry address if it
634 points to SHmedia code and write sorted .cranges entries when writing
635 executables (final linking and objcopy). */
636
637static void
09fd220b
KK
638sh64_elf_final_write_processing (bfd *abfd,
639 bfd_boolean linker ATTRIBUTE_UNUSED)
fbca6ad9
AO
640{
641 bfd_vma ld_generated_cranges_size;
642 asection *cranges
643 = bfd_get_section_by_name (abfd, SH64_CRANGES_SECTION_NAME);
644
645 /* If no new .cranges were added, the generic ELF linker parts will
646 write it all out. If not, we need to write them out when doing
647 partial linking. For a final link, we will sort them and write them
648 all out further below. */
649 if (linker
650 && cranges != NULL
651 && elf_elfheader (abfd)->e_type != ET_EXEC
652 && (ld_generated_cranges_size
f0abc2a1 653 = sh64_elf_section_data (cranges)->sh64_info->cranges_growth) != 0)
fbca6ad9
AO
654 {
655 bfd_vma incoming_cranges_size
656 = ((cranges->_cooked_size != 0
657 ? cranges->_cooked_size : cranges->_raw_size)
658 - ld_generated_cranges_size);
659
660 if (! bfd_set_section_contents (abfd, cranges,
661 cranges->contents
662 + incoming_cranges_size,
663 cranges->output_offset
664 + incoming_cranges_size,
665 ld_generated_cranges_size))
666 {
667 bfd_set_error (bfd_error_file_truncated);
668 (*_bfd_error_handler)
669 (_("%s: could not write out added .cranges entries"),
670 bfd_get_filename (abfd));
671 }
672 }
673
674 /* Only set entry address bit 0 and sort .cranges when linking to an
675 executable; never with objcopy or strip. */
676 if (linker && elf_elfheader (abfd)->e_type == ET_EXEC)
677 {
678 struct sh64_find_section_vma_data fsec_data;
679 sh64_elf_crange dummy;
680
681 /* For a final link, set the low bit of the entry address to
682 reflect whether or not it is a SHmedia address.
683 FIXME: Perhaps we shouldn't do this if the entry address was
684 supplied numerically, but we currently lack the infrastructure to
685 recognize that: The entry symbol, and info whether it is numeric
686 or a symbol name is kept private in the linker. */
687 fsec_data.addr = elf_elfheader (abfd)->e_entry;
688 fsec_data.section = NULL;
689
690 bfd_map_over_sections (abfd, sh64_find_section_for_address,
09fd220b 691 &fsec_data);
fbca6ad9
AO
692 if (fsec_data.section
693 && (sh64_get_contents_type (fsec_data.section,
694 elf_elfheader (abfd)->e_entry,
695 &dummy) == CRT_SH5_ISA32))
696 elf_elfheader (abfd)->e_entry |= 1;
697
698 /* If we have a .cranges section, sort the entries. */
699 if (cranges != NULL)
700 {
701 bfd_size_type cranges_size
702 = (cranges->_cooked_size != 0
703 ? cranges->_cooked_size : cranges->_raw_size);
704
705 /* We know we always have these in memory at this time. */
706 BFD_ASSERT (cranges->contents != NULL);
707
708 /* The .cranges may already have been sorted in the process of
709 finding out the ISA-type of the entry address. If not, we do
710 it here. */
711 if (elf_section_data (cranges)->this_hdr.sh_type
712 != SHT_SH5_CR_SORTED)
713 {
714 qsort (cranges->contents, cranges_size / SH64_CRANGE_SIZE,
715 SH64_CRANGE_SIZE,
716 bfd_big_endian (cranges->owner)
9cba27b2
JT
717 ? _bfd_sh64_crange_qsort_cmpb
718 : _bfd_sh64_crange_qsort_cmpl);
fbca6ad9
AO
719 elf_section_data (cranges)->this_hdr.sh_type
720 = SHT_SH5_CR_SORTED;
721 }
722
723 /* We need to write it out in whole as sorted. */
724 if (! bfd_set_section_contents (abfd, cranges,
725 cranges->contents,
726 cranges->output_offset,
727 cranges_size))
728 {
729 bfd_set_error (bfd_error_file_truncated);
730 (*_bfd_error_handler)
731 (_("%s: could not write out sorted .cranges entries"),
732 bfd_get_filename (abfd));
733 }
734 }
735 }
736}
2bc3c89a 737
2f89ff8d
L
738static struct bfd_elf_special_section const sh64_elf_special_sections[]=
739{
740 { ".cranges", 0, NULL, 0,
741 SHT_PROGBITS, 0 },
742 { NULL, 0, NULL, 0,
743 0, 0 }
744};
745
2bc3c89a
AM
746#undef TARGET_BIG_SYM
747#define TARGET_BIG_SYM bfd_elf32_sh64_vec
748#undef TARGET_BIG_NAME
749#define TARGET_BIG_NAME "elf32-sh64"
750#undef TARGET_LITTLE_SYM
751#define TARGET_LITTLE_SYM bfd_elf32_sh64l_vec
752#undef TARGET_LITTLE_NAME
753#define TARGET_LITTLE_NAME "elf32-sh64l"
754
755#include "elf32-target.h"
756
757/* NetBSD support. */
758#undef TARGET_BIG_SYM
759#define TARGET_BIG_SYM bfd_elf32_sh64nbsd_vec
760#undef TARGET_BIG_NAME
761#define TARGET_BIG_NAME "elf32-sh64-nbsd"
762#undef TARGET_LITTLE_SYM
763#define TARGET_LITTLE_SYM bfd_elf32_sh64lnbsd_vec
764#undef TARGET_LITTLE_NAME
765#define TARGET_LITTLE_NAME "elf32-sh64l-nbsd"
766#undef ELF_MAXPAGESIZE
767#define ELF_MAXPAGESIZE 0x10000
768#undef elf_symbol_leading_char
769#define elf_symbol_leading_char 0
571fe01f 770#undef elf32_bed
2bc3c89a
AM
771#define elf32_bed elf32_sh64_nbsd_bed
772
773#include "elf32-target.h"
774
2bc3c89a
AM
775/* Linux support. */
776#undef TARGET_BIG_SYM
777#define TARGET_BIG_SYM bfd_elf32_sh64blin_vec
778#undef TARGET_BIG_NAME
779#define TARGET_BIG_NAME "elf32-sh64big-linux"
780#undef TARGET_LITTLE_SYM
781#define TARGET_LITTLE_SYM bfd_elf32_sh64lin_vec
782#undef TARGET_LITTLE_NAME
783#define TARGET_LITTLE_NAME "elf32-sh64-linux"
571fe01f 784#undef elf32_bed
2bc3c89a
AM
785#define elf32_bed elf32_sh64_lin_bed
786
787#include "elf32-target.h"
788
This page took 0.190467 seconds and 4 git commands to generate.