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Visium: align branch absolute instruction for the GR6
[thirdparty/binutils-gdb.git] / bfd / elf32-visium.c
CommitLineData
d924db55
EB		 1/* Visium-specific support for 32-bit ELF.
2
82704155 3 Copyright (C) 2003-2019 Free Software Foundation, Inc.
d924db55
EB		 4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "sysdep.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf/visium.h"
707bad1b 28#include "libiberty.h"
d924db55
EB		 29
30static bfd_reloc_status_type visium_elf_howto_parity_reloc
31 (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
32
33static reloc_howto_type visium_elf_howto_table[] = {
34 /* This reloc does nothing. */
35 HOWTO (R_VISIUM_NONE, /* type */
36 0, /* rightshift */
6346d5ca
AM		 37 3, /* size (0 = byte, 1 = short, 2 = long) */
38 0, /* bitsize */
d924db55
EB		 39 FALSE, /* pc_relative */
40 0, /* bitpos */
6346d5ca 41 complain_overflow_dont, /* complain_on_overflow */
d924db55
EB		 42 bfd_elf_generic_reloc, /* special_function */
43 "R_VISIUM_NONE", /* name */
44 FALSE, /* partial_inplace */
45 0, /* src_mask */
46 0, /* dst_mask */
47 FALSE), /* pcrel_offset */
48
49 /* A 8 bit absolute relocation. */
50 HOWTO (R_VISIUM_8, /* type */
51 0, /* rightshift */
52 0, /* size (0 = byte, 1 = short, 2 = long) */
53 8, /* bitsize */
54 FALSE, /* pc_relative */
55 0, /* bitpos */
56 complain_overflow_bitfield, /* complain_on_overflow */
57 bfd_elf_generic_reloc, /* special_function */
58 "R_VISIUM_8", /* name */
59 FALSE, /* partial_inplace */
60 0x00, /* src_mask */
61 0xff, /* dst_mask */
62 FALSE), /* pcrel_offset */
63
64 /* A 16 bit absolute relocation. */
65 HOWTO (R_VISIUM_16, /* type */
66 0, /* rightshift */
67 1, /* size (0 = byte, 1 = short, 2 = long) */
68 16, /* bitsize */
69 FALSE, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_bitfield, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_VISIUM_16", /* name */
74 FALSE, /* partial_inplace */
75 0x0000, /* src_mask */
76 0xffff, /* dst_mask */
77 FALSE), /* pcrel_offset */
78
79 /* A 32 bit absolute relocation. */
80 HOWTO (R_VISIUM_32, /* type */
81 0, /* rightshift */
82 2, /* size (0 = byte, 1 = short, 2 = long) */
83 32, /* bitsize */
84 FALSE, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_bitfield, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_VISIUM_32", /* name */
89 FALSE, /* partial_inplace */
90 0x00000000, /* src_mask */
91 0xffffffff, /* dst_mask */
92 FALSE), /* pcrel_offset */
93
94
95 /* A 8 bit PC relative relocation. */
96 HOWTO (R_VISIUM_8_PCREL, /* type */
97 0, /* rightshift */
98 0, /* size (0 = byte, 1 = short, 2 = long) */
99 8, /* bitsize */
100 TRUE, /* pc_relative */
101 0, /* bitpos */
102 complain_overflow_bitfield, /* complain_on_overflow */
103 bfd_elf_generic_reloc, /* special_function */
104 "R_VISIUM_8_PCREL", /* name */
105 FALSE, /* partial_inplace */
106 0x00, /* src_mask */
107 0xff, /* dst_mask */
108 TRUE), /* pcrel_offset */
109
110 /* A 16 bit PC relative relocation. */
111 HOWTO (R_VISIUM_16_PCREL, /* type */
112 0, /* rightshift */
113 1, /* size (0 = byte, 1 = short, 2 = long) */
114 16, /* bitsize */
115 TRUE, /* pc_relative */
116 0, /* bitpos */
117 complain_overflow_bitfield, /* complain_on_overflow */
118 bfd_elf_generic_reloc, /* special_function */
119 "R_VISIUM_16_PCREL", /* name */
120 FALSE, /* partial inplace */
121 0x0000, /* src_mask */
122 0xffff, /* dst_mask */
123 TRUE), /* pcrel_offset */
124
125 /* A 32-bit PC relative relocation. */
126 HOWTO (R_VISIUM_32_PCREL, /* type */
127 0, /* rightshift */
128 2, /* size (0 = byte, 1 = short, 2 = long) */
129 32, /* bitsize */
130 TRUE, /* pc_relative */
131 0, /* bitpos */
132 complain_overflow_bitfield, /* complain_on_overflow */
133 bfd_elf_generic_reloc, /* special_function */
134 "R_VISIUM_32_PCREL", /* name */
135 FALSE, /* partial_inplace */
136 0, /* src_mask */
137 0xffffffff, /* dst_mask */
138 TRUE), /* pcrel_offset */
139
140 /* A 16-bit PC word relative offset, relative to start of instruction
141 and always in the second half of the instruction. */
142 HOWTO (R_VISIUM_PC16, /* type */
143 2, /* rightshift */
144 2, /* size (0 = byte, 1 = short, 2 = long) */
145 16, /* bitsize */
146 TRUE, /* pc_relative */
147 0, /* bitpos */
148 complain_overflow_signed, /* complain_on_overflow */
149 visium_elf_howto_parity_reloc, /* special_function */
150 "R_VISIUM_PC16", /* name */
151 FALSE, /* partial_inplace */
152 0x00000000, /* src_mask */
153 0x0000ffff, /* dst_mask */
154 TRUE), /* pcrel_offset */
155
156 /* The high 16 bits of symbol value. */
157 HOWTO (R_VISIUM_HI16, /* type */
158 16, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 16, /* bitsize */
161 FALSE, /* pc_relative */
162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 visium_elf_howto_parity_reloc, /* special_function */
165 "R_VISIUM_HI16", /* name */
166 FALSE, /* partial_inplace */
167 0x00000000, /* src_mask */
168 0x0000ffff, /* dst_mask */
169 FALSE), /* pcrel_offset */
170
171 /* The low 16 bits of symbol value. */
172 HOWTO (R_VISIUM_LO16, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 16, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 visium_elf_howto_parity_reloc, /* special_function */
180 "R_VISIUM_LO16", /* name */
181 FALSE, /* partial_inplace */
182 0x00000000, /* src_mask */
183 0x0000ffff, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 /* A 16 bit immediate value. */
187 HOWTO (R_VISIUM_IM16, /* type */
188 0, /* rightshift */
189 2, /* size (0 = byte, 1 = short, 2 = long) */
190 16, /* bitsize */
191 FALSE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_unsigned, /* complain_on_overflow */
194 visium_elf_howto_parity_reloc, /* special_function */
195 "R_VISIUM_IM16", /* name */
196 FALSE, /* partial_inplace */
197 0x0000000, /* src_mask */
198 0x000ffff, /* dst_mask */
199 FALSE), /* pcrel_offset */
200
201 /* The high 16 bits of symbol value, pc relative. */
202 HOWTO (R_VISIUM_HI16_PCREL, /* type */
203 16, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 16, /* bitsize */
206 TRUE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 visium_elf_howto_parity_reloc, /* special_function */
210 "R_VISIUM_HI16_PCREL", /* name */
211 FALSE, /* partial_inplace */
212 0x00000000, /* src_mask */
213 0x0000ffff, /* dst_mask */
214 TRUE), /* pcrel_offset */
215
216 /* The low 16 bits of symbol value, pc relative. */
217 HOWTO (R_VISIUM_LO16_PCREL, /* type */
218 0, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
221 TRUE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_dont, /* complain_on_overflow */
224 visium_elf_howto_parity_reloc, /* special_function */
225 "R_VISIUM_LO16_PCREL", /* name */
226 FALSE, /* partial_inplace */
227 0x00000000, /* src_mask */
228 0x0000ffff, /* dst_mask */
229 TRUE), /* pcrel_offset */
230
231 /* A 16 bit immediate value, pc relative. */
232 HOWTO (R_VISIUM_IM16_PCREL, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
236 TRUE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_unsigned, /* complain_on_overflow */
239 visium_elf_howto_parity_reloc, /* special_function */
240 "R_VISIUM_IM16_PCREL", /* name */
241 FALSE, /* partial_inplace */
242 0x0000000, /* src_mask */
243 0x000ffff, /* dst_mask */
244 TRUE), /* pcrel_offset */
245
246};
247
248/* GNU extension to record C++ vtable hierarchy. */
249static reloc_howto_type visium_elf_vtinherit_howto =
250 HOWTO (R_VISIUM_GNU_VTINHERIT, /* type */
251 0, /* rightshift */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
253 0, /* bitsize */
254 FALSE, /* pc_relative */
255 0, /* bitpos */
256 complain_overflow_dont, /* complain_on_overflow */
257 NULL, /* special_function */
258 "R_VISIUM_GNU_VTINHERIT", /* name */
259 FALSE, /* partial_inplace */
260 0, /* src_mask */
261 0, /* dst_mask */
262 FALSE); /* pcrel_offset */
263
264/* GNU extension to record C++ vtable member usage. */
265static reloc_howto_type visium_elf_vtentry_howto =
266 HOWTO (R_VISIUM_GNU_VTENTRY, /* type */
267 0, /* rightshift */
268 2, /* size (0 = byte, 1 = short, 2 = long) */
269 0, /* bitsize */
270 FALSE, /* pc_relative */
271 0, /* bitpos */
272 complain_overflow_dont, /* complain_on_overflow */
273 NULL, /* special_function */
274 "R_VISIUM_GNU_VTENTRY", /* name */
275 FALSE, /* partial_inplace */
276 0, /* src_mask */
277 0, /* dst_mask */
278 FALSE); /* pcrel_offset */
279
d924db55
EB		 280/* Return the parity bit for INSN shifted to its final position. */
281
282static bfd_vma
283visium_parity_bit (bfd_vma insn)
284{
285 bfd_vma p = 0;
286 int i;
287
288 for (i = 0; i < 31; i++)
289 {
290 p ^= (insn & 1);
291 insn >>= 1;
292 }
293
294 return p << 31;
295}
296
297/* This "special function" will only be used when the input and
298 output files have different formats ie. when generating S-records
299 directly using "--oformat srec". Otherwise we use
300 _bfd_final_link_relocate which uses a howto structure, but does
301 not use the special_function field.
302
303 It sets instruction parity to even. This cannot be done by a howto. */
304
305static bfd_reloc_status_type
306visium_elf_howto_parity_reloc (bfd * input_bfd, arelent *reloc_entry,
307 asymbol *symbol, PTR data,
308 asection *input_section, bfd *output_bfd,
309 char **error_message ATTRIBUTE_UNUSED)
310{
311 bfd_reloc_status_type ret;
312 bfd_vma relocation;
313 bfd_byte *inplace_address;
314 bfd_vma insn;
315 const bfd_vma signmask = 0xffff8000;
316
317 /* This part is from bfd_elf_generic_reloc.
318 If we're relocating, and this an external symbol, we don't want
319 to change anything. */
320 if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0)
321 {
322 reloc_entry->address += input_section->output_offset;
323 return bfd_reloc_ok;
324 }
325
326 /* Now do the reloc in the usual way. */
327
328 /* Sanity check the address (offset in section). */
329 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
330 return bfd_reloc_outofrange;
331
332 ret = bfd_reloc_ok;
333 if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
334 ret = bfd_reloc_undefined;
335
336 if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
337 relocation = 0;
338 else
339 relocation = symbol->value;
340
341 /* Only do this for a final link. */
342 if (output_bfd == (bfd *) NULL)
343 {
344 relocation += symbol->section->output_section->vma;
345 relocation += symbol->section->output_offset;
346 }
347
348 relocation += reloc_entry->addend;
349 inplace_address = (bfd_byte *) data + reloc_entry->address;
350 insn = bfd_get_32 (input_bfd, inplace_address);
351
352 if (reloc_entry->howto->pc_relative)
353 {
354 relocation -= input_section->output_section->vma
355 + input_section->output_offset;
356 relocation -= reloc_entry->address;
357 }
358
359 switch (reloc_entry->howto->type)
360 {
361 case R_VISIUM_PC16:
362 relocation >>= 2;
363 if (ret == bfd_reloc_ok && (relocation & signmask) != 0
364 && (relocation & signmask) != signmask)
365 ret = bfd_reloc_overflow;
366 relocation &= 0xffff;
367 break;
368 case R_VISIUM_HI16:
369 case R_VISIUM_HI16_PCREL:
370 relocation = (relocation >> 16) & 0xffff;
371 break;
372 case R_VISIUM_LO16:
373 case R_VISIUM_LO16_PCREL:
374 relocation &= 0xffff;
375 break;
376 case R_VISIUM_IM16:
377 case R_VISIUM_IM16_PCREL:
378 if (ret == bfd_reloc_ok && (relocation & 0xffff0000) != 0)
379 ret = bfd_reloc_overflow;
380 relocation &= 0xffff;
381 break;
382 }
383 insn = (insn & 0x7fff0000) | relocation;
384 insn |= visium_parity_bit (insn);
385 bfd_put_32 (input_bfd, insn, inplace_address);
386
387 if (output_bfd != (bfd *) NULL)
388 reloc_entry->address += input_section->output_offset;
389
390 return ret;
391}
392
393static reloc_howto_type *
394visium_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
395 bfd_reloc_code_real_type code)
396{
397 /* Note that the visium_elf_howto_table is indexed by the R_
398 constants. Thus, the order that the howto records appear in the
399 table *must* match the order of the relocation types defined in
400 include/elf/visium.h. */
401 switch (code)
402 {
403 case BFD_RELOC_NONE:
404 return &visium_elf_howto_table[(int) R_VISIUM_NONE];
405 case BFD_RELOC_8:
406 return &visium_elf_howto_table[(int) R_VISIUM_8];
407 case BFD_RELOC_16:
408 return &visium_elf_howto_table[(int) R_VISIUM_16];
409 case BFD_RELOC_32:
410 return &visium_elf_howto_table[(int) R_VISIUM_32];
411 case BFD_RELOC_8_PCREL:
412 return &visium_elf_howto_table[(int) R_VISIUM_8_PCREL];
413 case BFD_RELOC_16_PCREL:
414 return &visium_elf_howto_table[(int) R_VISIUM_16_PCREL];
415 case BFD_RELOC_32_PCREL:
416 return &visium_elf_howto_table[(int) R_VISIUM_32_PCREL];
417 case BFD_RELOC_VISIUM_REL16:
418 return &visium_elf_howto_table[(int) R_VISIUM_PC16];
419 case BFD_RELOC_VISIUM_HI16:
420 return &visium_elf_howto_table[(int) R_VISIUM_HI16];
421 case BFD_RELOC_VISIUM_LO16:
422 return &visium_elf_howto_table[(int) R_VISIUM_LO16];
423 case BFD_RELOC_VISIUM_IM16:
424 return &visium_elf_howto_table[(int) R_VISIUM_IM16];
425 case BFD_RELOC_VISIUM_HI16_PCREL:
426 return &visium_elf_howto_table[(int) R_VISIUM_HI16_PCREL];
427 case BFD_RELOC_VISIUM_LO16_PCREL:
428 return &visium_elf_howto_table[(int) R_VISIUM_LO16_PCREL];
429 case BFD_RELOC_VISIUM_IM16_PCREL:
430 return &visium_elf_howto_table[(int) R_VISIUM_IM16_PCREL];
431 case BFD_RELOC_VTABLE_INHERIT:
432 return &visium_elf_vtinherit_howto;
433 case BFD_RELOC_VTABLE_ENTRY:
434 return &visium_elf_vtentry_howto;
435 default:
436 return NULL;
437 }
438}
439
440static reloc_howto_type *
441visium_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
442{
443 unsigned int i;
444
445 for (i = 0;
446 i < (sizeof (visium_elf_howto_table)
447 / sizeof (visium_elf_howto_table[0])); i++)
448 if (visium_elf_howto_table[i].name != NULL
449 && strcasecmp (visium_elf_howto_table[i].name, r_name) == 0)
450 return &visium_elf_howto_table[i];
451
452 if (strcasecmp (visium_elf_vtinherit_howto.name, r_name) == 0)
453 return &visium_elf_vtinherit_howto;
454 if (strcasecmp (visium_elf_vtentry_howto.name, r_name) == 0)
455 return &visium_elf_vtentry_howto;
456
457 return NULL;
458}
459
460/* Set the howto pointer for a VISIUM ELF reloc. */
461
f3185997 462static bfd_boolean
0aa13fee 463visium_info_to_howto_rela (bfd *abfd, arelent *cache_ptr,
d924db55
EB		 464 Elf_Internal_Rela *dst)
465{
466 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
467
468 switch (r_type)
469 {
470 case R_VISIUM_GNU_VTINHERIT:
471 cache_ptr->howto = &visium_elf_vtinherit_howto;
472 break;
473
474 case R_VISIUM_GNU_VTENTRY:
475 cache_ptr->howto = &visium_elf_vtentry_howto;
476 break;
477
478 default:
707bad1b 479 if (r_type >= ARRAY_SIZE (visium_elf_howto_table))
5860e3f8 480 {
695344c0 481 /* xgettext:c-format */
0aa13fee
AM		 482 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
483 abfd, r_type);
f3185997
NC		 484 bfd_set_error (bfd_error_bad_value);
485 return FALSE;
5860e3f8 486 }
d924db55
EB		 487 cache_ptr->howto = &visium_elf_howto_table[r_type];
488 break;
489 }
f3185997 490 return TRUE;
d924db55
EB		 491}
492
493/* Look through the relocs for a section during the first phase.
494 Since we don't do .gots or .plts, we just need to consider the
495 virtual table relocs for gc. */
496
497static bfd_boolean
498visium_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
499 asection *sec, const Elf_Internal_Rela *relocs)
500{
501 Elf_Internal_Shdr *symtab_hdr;
502 struct elf_link_hash_entry **sym_hashes;
503 const Elf_Internal_Rela *rel;
504 const Elf_Internal_Rela *rel_end;
505
0e1862bb 506 if (bfd_link_relocatable (info))
d924db55
EB		 507 return TRUE;
508
509 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
510 sym_hashes = elf_sym_hashes (abfd);
511
512 rel_end = relocs + sec->reloc_count;
513 for (rel = relocs; rel < rel_end; rel++)
514 {
515 struct elf_link_hash_entry *h;
516 unsigned long r_symndx;
517
518 r_symndx = ELF32_R_SYM (rel->r_info);
519 if (r_symndx < symtab_hdr->sh_info)
520 h = NULL;
521 else
522 {
523 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
524 while (h->root.type == bfd_link_hash_indirect
525 || h->root.type == bfd_link_hash_warning)
526 h = (struct elf_link_hash_entry *) h->root.u.i.link;
527 }
528
529 switch (ELF32_R_TYPE (rel->r_info))
530 {
531 /* This relocation describes the C++ object vtable hierarchy.
532 Reconstruct it for later use during GC. */
533 case R_VISIUM_GNU_VTINHERIT:
534 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
535 return FALSE;
536 break;
537
538 /* This relocation describes which C++ vtable entries are actually
539 used. Record for later use during GC. */
540 case R_VISIUM_GNU_VTENTRY:
541 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
542 return FALSE;
543 break;
544 }
545 }
546
547 return TRUE;
548}
549
550/* Relocate a VISIUM ELF section. */
551
552static bfd_boolean
553visium_elf_relocate_section (bfd *output_bfd,
554 struct bfd_link_info *info, bfd *input_bfd,
555 asection *input_section, bfd_byte *contents,
556 Elf_Internal_Rela *relocs,
557 Elf_Internal_Sym *local_syms,
558 asection **local_sections)
559{
560 Elf_Internal_Shdr *symtab_hdr;
561 struct elf_link_hash_entry **sym_hashes;
562 Elf_Internal_Rela *rel;
563 Elf_Internal_Rela *relend;
564
565 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
566 sym_hashes = elf_sym_hashes (input_bfd);
567 relend = relocs + input_section->reloc_count;
568
569 for (rel = relocs; rel < relend; rel++)
570 {
571 reloc_howto_type *howto;
572 unsigned long r_symndx;
573 Elf_Internal_Sym *sym;
574 asection *sec;
575 struct elf_link_hash_entry *h;
576 bfd_vma relocation;
577 bfd_reloc_status_type r;
578 const char *name = NULL;
579 int r_type;
580 bfd_vma insn;
581
582 r_type = ELF32_R_TYPE (rel->r_info);
583
584 if (r_type == R_VISIUM_GNU_VTINHERIT || r_type == R_VISIUM_GNU_VTENTRY)
585 continue;
586
587 r_symndx = ELF32_R_SYM (rel->r_info);
588
589 howto = visium_elf_howto_table + ELF32_R_TYPE (rel->r_info);
590 h = NULL;
591 sym = NULL;
592 sec = NULL;
593
594 if (r_symndx < symtab_hdr->sh_info)
595 {
596 /* This is a local symbol. */
597 sym = local_syms + r_symndx;
598 sec = local_sections[r_symndx];
599 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
600
601 name = bfd_elf_string_from_elf_section
602 (input_bfd, symtab_hdr->sh_link, sym->st_name);
603 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
604 }
605 else
606 {
607 bfd_boolean unresolved_reloc;
608 bfd_boolean warned, ignored;
609
610 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
611 r_symndx, symtab_hdr, sym_hashes,
612 h, sec, relocation,
613 unresolved_reloc, warned, ignored);
614
615 name = h->root.root.string;
616 }
617
618 if (sec != NULL && discarded_section (sec))
619 {
620 /* For relocs against symbols from removed linkonce sections,
621 or sections discarded by a linker script, we just want the
622 section contents zeroed. Avoid any special processing. */
623 _bfd_clear_contents (howto, input_bfd, input_section,
0930cb30 624 contents, rel->r_offset);
d924db55
EB		 625
626 rel->r_info = 0;
627 rel->r_addend = 0;
628 continue;
629 }
630
0e1862bb 631 if (bfd_link_relocatable (info))
d924db55
EB		 632 continue;
633
634 switch (r_type)
635 {
636 case R_VISIUM_PC16:
637 case R_VISIUM_HI16:
638 case R_VISIUM_LO16:
639 case R_VISIUM_IM16:
640 case R_VISIUM_HI16_PCREL:
641 case R_VISIUM_LO16_PCREL:
642 case R_VISIUM_IM16_PCREL:
643 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
644 contents, rel->r_offset,
645 relocation, rel->r_addend);
646
647 /* For instruction relocations, the parity needs correcting. */
648 if (r == bfd_reloc_ok)
649 {
650 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
651 insn = (insn & 0x7fffffff) | visium_parity_bit (insn);
652 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
653 }
654 break;
655
656 default:
657 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
658 contents, rel->r_offset,
659 relocation, rel->r_addend);
660 break;
661 }
662
663 if (r != bfd_reloc_ok)
664 {
665 const char *msg = (const char *) NULL;
666
667 switch (r)
668 {
669 case bfd_reloc_overflow:
1a72702b 670 (*info->callbacks->reloc_overflow)
d924db55
EB		 671 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
672 input_bfd, input_section, rel->r_offset);
673 break;
674
675 case bfd_reloc_undefined:
1a72702b 676 (*info->callbacks->undefined_symbol)
d924db55
EB		 677 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
678 break;
679
680 case bfd_reloc_outofrange:
681 msg = _("internal error: out of range error");
682 break;
683
684 case bfd_reloc_notsupported:
685 msg = _("internal error: unsupported relocation error");
686 break;
687
688 case bfd_reloc_dangerous:
689 msg = _("internal error: dangerous relocation");
690 break;
691
692 default:
693 msg = _("internal error: unknown error");
694 break;
695 }
696
697 if (msg)
1a72702b
AM		 698 (*info->callbacks->warning) (info, msg, name, input_bfd,
699 input_section, rel->r_offset);
d924db55
EB		 700 }
701 }
702
703 return TRUE;
704}
705
706/* This function is called during section gc to discover the section a
707 to which a particular relocation refers. Return the section that
708 should be marked against GC for a given relocation. */
709
710static asection *
711visium_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
712 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
713 Elf_Internal_Sym *sym)
714{
715 if (h != NULL)
716 switch (ELF32_R_TYPE (rel->r_info))
717 {
718 case R_VISIUM_GNU_VTINHERIT:
719 case R_VISIUM_GNU_VTENTRY:
720 return NULL;
721 }
722
723 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
724}
725
726static void
727visium_elf_post_process_headers (bfd *abfd,
728 struct bfd_link_info *info ATTRIBUTE_UNUSED)
729{
730 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
731 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE;
732 i_ehdrp->e_ident[EI_ABIVERSION] = 1;
733}
734
735/* Function to set the ELF flag bits. */
736
737static bfd_boolean
738visium_elf_set_private_flags (bfd *abfd, flagword flags)
739{
740 elf_elfheader (abfd)->e_flags = flags;
741 elf_flags_init (abfd) = TRUE;
742 return TRUE;
743}
744
745/* Copy backend specific data from one object module to another. */
746
747static bfd_boolean
748visium_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
749{
750 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
751 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
752 return TRUE;
753
754 BFD_ASSERT (!elf_flags_init (obfd)
755 || elf_elfheader (obfd)->e_flags ==
756 elf_elfheader (ibfd)->e_flags);
757
758 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
759 elf_flags_init (obfd) = TRUE;
760
761 /* Copy object attributes. */
762 _bfd_elf_copy_obj_attributes (ibfd, obfd);
763
764 return TRUE;
765}
766
767/* Merge backend specific data from an object
768 file to the output object file when linking. */
769
770static bfd_boolean
50e03d47 771visium_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
d924db55 772{
50e03d47 773 bfd *obfd = info->output_bfd;
d924db55
EB		 774 flagword old_flags;
775 flagword new_flags;
776 flagword mismatch;
777 const char *opt_arch = NULL;
778 const char *new_opt_with = NULL;
779 const char *old_opt_with = NULL;
780 const char *with = "with";
781 const char *without = "without";
782 const char *mcm = "mcm";
783 const char *mcm24 = "mcm24";
784 const char *gr6 = "gr6";
785
786 new_flags = elf_elfheader (ibfd)->e_flags;
787 old_flags = elf_elfheader (obfd)->e_flags;
788
789 if (!elf_flags_init (obfd))
790 {
791 /* First call, no flags set. */
792 elf_flags_init (obfd) = TRUE;
793 elf_elfheader (obfd)->e_flags = new_flags;
794 }
795 else
796 {
797 mismatch = (new_flags ^ old_flags)
798 & (EF_VISIUM_ARCH_MCM | EF_VISIUM_ARCH_MCM24 | EF_VISIUM_ARCH_GR6);
799 if (mismatch & EF_VISIUM_ARCH_GR6)
800 {
801 opt_arch = gr6;
802 new_opt_with = new_flags & EF_VISIUM_ARCH_GR6 ? with : without;
803 old_opt_with = old_flags & EF_VISIUM_ARCH_GR6 ? with : without;
804 }
805 else if (mismatch & EF_VISIUM_ARCH_MCM)
806 {
807 opt_arch = mcm;
808 new_opt_with = new_flags & EF_VISIUM_ARCH_MCM ? with : without;
809 old_opt_with = old_flags & EF_VISIUM_ARCH_MCM ? with : without;
810 }
811 else if (mismatch & EF_VISIUM_ARCH_MCM24)
812 {
813 opt_arch = mcm24;
814 new_opt_with = new_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
815 old_opt_with = old_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
816 }
817
818 if (mismatch)
819 _bfd_error_handler
695344c0 820 /* xgettext:c-format */
871b3ab2 821 (_("%pB: compiled %s -mtune=%s and linked with modules"
695344c0 822 " compiled %s -mtune=%s"),
dae82561 823 ibfd, new_opt_with, opt_arch, old_opt_with, opt_arch);
d924db55
EB		 824 }
825
826 return TRUE;
827}
828
829static bfd_boolean
830visium_elf_print_private_bfd_data (bfd *abfd, void *ptr)
831{
832 FILE *file = (FILE *) ptr;
833 flagword flags;
834
835 BFD_ASSERT (abfd != NULL && ptr != NULL);
836
837 /* Print normal ELF private data. */
838 _bfd_elf_print_private_bfd_data (abfd, ptr);
839
840 flags = elf_elfheader (abfd)->e_flags;
841 fprintf (file, _("private flags = 0x%lx:"), (long) flags);
842
843 if (flags & EF_VISIUM_ARCH_GR6)
844 fprintf (file, " -mtune=gr6");
845 else if (flags & EF_VISIUM_ARCH_MCM)
846 fprintf (file, " -mtune=mcm");
847 else if (flags & EF_VISIUM_ARCH_MCM24)
848 fprintf (file, " -mtune=mcm24");
849
850 fputc ('\n', file);
851 return TRUE;
852}
853
854#define ELF_ARCH bfd_arch_visium
855#define ELF_MACHINE_CODE EM_VISIUM
856#define ELF_MAXPAGESIZE 1
857
858#define TARGET_BIG_SYM visium_elf32_vec
859#define TARGET_BIG_NAME "elf32-visium"
860
861#define elf_info_to_howto_rel NULL
862#define elf_info_to_howto visium_info_to_howto_rela
863#define elf_backend_relocate_section visium_elf_relocate_section
864#define elf_backend_gc_mark_hook visium_elf_gc_mark_hook
865#define elf_backend_check_relocs visium_elf_check_relocs
866#define elf_backend_rela_normal 1
867
868#define elf_backend_can_gc_sections 1
869
870#define bfd_elf32_bfd_reloc_type_lookup visium_reloc_type_lookup
871#define bfd_elf32_bfd_reloc_name_lookup visium_reloc_name_lookup
872
873#define bfd_elf32_bfd_set_private_flags visium_elf_set_private_flags
874#define bfd_elf32_bfd_copy_private_bfd_data visium_elf_copy_private_bfd_data
875#define bfd_elf32_bfd_merge_private_bfd_data visium_elf_merge_private_bfd_data
876#define bfd_elf32_bfd_print_private_bfd_data visium_elf_print_private_bfd_data
877#define elf_backend_post_process_headers visium_elf_post_process_headers
878
879#include "elf32-target.h"
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