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[deliverable/binutils-gdb.git] / bfd / elf32-v850.c
1 /* V850-specific support for 32-bit ELF
2 Copyright (C) 1996-2014 Free Software Foundation, Inc.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21
22 /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
23 dependencies. As is the gas & simulator code for the v850. */
24
25 #include "sysdep.h"
26 #include "bfd.h"
27 #include "bfdlink.h"
28 #include "libbfd.h"
29 #include "elf-bfd.h"
30 #include "elf/v850.h"
31 #include "libiberty.h"
32
33 /* Sign-extend a 17-bit number. */
34 #define SEXT17(x) ((((x) & 0x1ffff) ^ 0x10000) - 0x10000)
35
36 /* Sign-extend a 22-bit number. */
37 #define SEXT22(x) ((((x) & 0x3fffff) ^ 0x200000) - 0x200000)
38
39 static reloc_howto_type v850_elf_howto_table[];
40
41 /* Look through the relocs for a section during the first phase, and
42 allocate space in the global offset table or procedure linkage
43 table. */
44
45 static bfd_boolean
46 v850_elf_check_relocs (bfd *abfd,
47 struct bfd_link_info *info,
48 asection *sec,
49 const Elf_Internal_Rela *relocs)
50 {
51 bfd_boolean ret = TRUE;
52 Elf_Internal_Shdr *symtab_hdr;
53 struct elf_link_hash_entry **sym_hashes;
54 const Elf_Internal_Rela *rel;
55 const Elf_Internal_Rela *rel_end;
56 unsigned int r_type;
57 int other = 0;
58 const char *common = NULL;
59
60 if (info->relocatable)
61 return TRUE;
62
63 #ifdef DEBUG
64 _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B",
65 sec, abfd);
66 #endif
67
68 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
69 sym_hashes = elf_sym_hashes (abfd);
70
71 rel_end = relocs + sec->reloc_count;
72 for (rel = relocs; rel < rel_end; rel++)
73 {
74 unsigned long r_symndx;
75 struct elf_link_hash_entry *h;
76
77 r_symndx = ELF32_R_SYM (rel->r_info);
78 if (r_symndx < symtab_hdr->sh_info)
79 h = NULL;
80 else
81 {
82 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
83 while (h->root.type == bfd_link_hash_indirect
84 || h->root.type == bfd_link_hash_warning)
85 h = (struct elf_link_hash_entry *) h->root.u.i.link;
86
87 /* PR15323, ref flags aren't set for references in the same
88 object. */
89 h->root.non_ir_ref = 1;
90 }
91
92 r_type = ELF32_R_TYPE (rel->r_info);
93 switch (r_type)
94 {
95 default:
96 break;
97
98 /* This relocation describes the C++ object vtable hierarchy.
99 Reconstruct it for later use during GC. */
100 case R_V850_GNU_VTINHERIT:
101 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
102 return FALSE;
103 break;
104
105 /* This relocation describes which C++ vtable entries
106 are actually used. Record for later use during GC. */
107 case R_V850_GNU_VTENTRY:
108 BFD_ASSERT (h != NULL);
109 if (h != NULL
110 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
111 return FALSE;
112 break;
113
114 case R_V850_SDA_16_16_SPLIT_OFFSET:
115 case R_V850_SDA_16_16_OFFSET:
116 case R_V850_SDA_15_16_OFFSET:
117 case R_V810_GPWLO_1:
118 case R_V850_HWLO:
119 case R_V850_HWLO_1:
120 other = V850_OTHER_SDA;
121 common = ".scommon";
122 goto small_data_common;
123
124 case R_V850_ZDA_16_16_SPLIT_OFFSET:
125 case R_V850_ZDA_16_16_OFFSET:
126 case R_V850_ZDA_15_16_OFFSET:
127 other = V850_OTHER_ZDA;
128 common = ".zcommon";
129 goto small_data_common;
130
131 case R_V850_TDA_4_4_OFFSET:
132 case R_V850_TDA_4_5_OFFSET:
133 case R_V850_TDA_7_7_OFFSET:
134 case R_V850_TDA_6_8_OFFSET:
135 case R_V850_TDA_7_8_OFFSET:
136 case R_V850_TDA_16_16_OFFSET:
137 other = V850_OTHER_TDA;
138 common = ".tcommon";
139 /* fall through */
140
141 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
142
143 small_data_common:
144 if (h)
145 {
146 /* Flag which type of relocation was used. */
147 h->other |= other;
148 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
149 && (h->other & V850_OTHER_ERROR) == 0)
150 {
151 const char * msg;
152 static char buff[200]; /* XXX */
153
154 switch (h->other & V850_OTHER_MASK)
155 {
156 default:
157 msg = _("Variable `%s' cannot occupy in multiple small data regions");
158 break;
159 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
160 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
161 break;
162 case V850_OTHER_SDA | V850_OTHER_ZDA:
163 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
164 break;
165 case V850_OTHER_SDA | V850_OTHER_TDA:
166 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
167 break;
168 case V850_OTHER_ZDA | V850_OTHER_TDA:
169 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
170 break;
171 }
172
173 sprintf (buff, msg, h->root.root.string);
174 info->callbacks->warning (info, buff, h->root.root.string,
175 abfd, h->root.u.def.section,
176 (bfd_vma) 0);
177
178 bfd_set_error (bfd_error_bad_value);
179 h->other |= V850_OTHER_ERROR;
180 ret = FALSE;
181 }
182 }
183
184 if (h && h->root.type == bfd_link_hash_common
185 && h->root.u.c.p
186 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
187 {
188 asection * section;
189
190 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
191 section->flags |= SEC_IS_COMMON;
192 }
193
194 #ifdef DEBUG
195 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
196 v850_elf_howto_table[ (int)r_type ].name,
197 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
198 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
199 #endif
200 break;
201 }
202 }
203
204 return ret;
205 }
206
207 /* In the old version, when an entry was checked out from the table,
208 it was deleted. This produced an error if the entry was needed
209 more than once, as the second attempted retry failed.
210
211 In the current version, the entry is not deleted, instead we set
212 the field 'found' to TRUE. If a second lookup matches the same
213 entry, then we know that the hi16s reloc has already been updated
214 and does not need to be updated a second time.
215
216 TODO - TOFIX: If it is possible that we need to restore 2 different
217 addresses from the same table entry, where the first generates an
218 overflow, whilst the second do not, then this code will fail. */
219
220 typedef struct hi16s_location
221 {
222 bfd_vma addend;
223 bfd_byte * address;
224 unsigned long counter;
225 bfd_boolean found;
226 struct hi16s_location * next;
227 }
228 hi16s_location;
229
230 static hi16s_location * previous_hi16s;
231 static hi16s_location * free_hi16s;
232 static unsigned long hi16s_counter;
233
234 static void
235 remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address)
236 {
237 hi16s_location * entry = NULL;
238 bfd_size_type amt = sizeof (* free_hi16s);
239
240 /* Find a free structure. */
241 if (free_hi16s == NULL)
242 free_hi16s = bfd_zalloc (abfd, amt);
243
244 entry = free_hi16s;
245 free_hi16s = free_hi16s->next;
246
247 entry->addend = addend;
248 entry->address = address;
249 entry->counter = hi16s_counter ++;
250 entry->found = FALSE;
251 entry->next = previous_hi16s;
252 previous_hi16s = entry;
253
254 /* Cope with wrap around of our counter. */
255 if (hi16s_counter == 0)
256 {
257 /* XXX: Assume that all counter entries differ only in their low 16 bits. */
258 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
259 entry->counter &= 0xffff;
260
261 hi16s_counter = 0x10000;
262 }
263 }
264
265 static bfd_byte *
266 find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found)
267 {
268 hi16s_location *match = NULL;
269 hi16s_location *entry;
270 bfd_byte *addr;
271
272 /* Search the table. Record the most recent entry that matches. */
273 for (entry = previous_hi16s; entry; entry = entry->next)
274 {
275 if (entry->addend == addend
276 && (match == NULL || match->counter < entry->counter))
277 {
278 match = entry;
279 }
280 }
281
282 if (match == NULL)
283 return NULL;
284
285 /* Extract the address. */
286 addr = match->address;
287
288 /* Remember if this entry has already been used before. */
289 if (already_found)
290 * already_found = match->found;
291
292 /* Note that this entry has now been used. */
293 match->found = TRUE;
294
295 return addr;
296 }
297
298 /* Calculate the final operand value for a R_V850_LO16 or
299 R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and
300 ADDEND is the sum of the relocation symbol and offset. Store the
301 operand value in *INSN and return true on success.
302
303 The assembler has already done some of this: If the value stored in
304 the instruction has its 15th bit set, (counting from zero) then the
305 assembler will have added 1 to the value stored in the associated
306 HI16S reloc. So for example, these relocations:
307
308 movhi hi( fred ), r0, r1
309 movea lo( fred ), r1, r1
310
311 will store 0 in the value fields for the MOVHI and MOVEA instructions
312 and addend will be the address of fred, but for these instructions:
313
314 movhi hi( fred + 0x123456 ), r0, r1
315 movea lo( fred + 0x123456 ), r1, r1
316
317 the value stored in the MOVHI instruction will be 0x12 and the value
318 stored in the MOVEA instruction will be 0x3456. If however the
319 instructions were:
320
321 movhi hi( fred + 0x10ffff ), r0, r1
322 movea lo( fred + 0x10ffff ), r1, r1
323
324 then the value stored in the MOVHI instruction would be 0x11 (not
325 0x10) and the value stored in the MOVEA instruction would be 0xffff.
326 Thus (assuming for the moment that the addend is 0), at run time the
327 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
328 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
329 the instructions were:
330
331 movhi hi( fred - 1 ), r0, r1
332 movea lo( fred - 1 ), r1, r1
333
334 then 0 is stored in the MOVHI instruction and -1 is stored in the
335 MOVEA instruction.
336
337 Overflow can occur if the addition of the value stored in the
338 instruction plus the addend sets the 15th bit when before it was clear.
339 This is because the 15th bit will be sign extended into the high part,
340 thus reducing its value by one, but since the 15th bit was originally
341 clear, the assembler will not have added 1 to the previous HI16S reloc
342 to compensate for this effect. For example:
343
344 movhi hi( fred + 0x123456 ), r0, r1
345 movea lo( fred + 0x123456 ), r1, r1
346
347 The value stored in HI16S reloc is 0x12, the value stored in the LO16
348 reloc is 0x3456. If we assume that the address of fred is 0x00007000
349 then the relocations become:
350
351 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
352 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
353
354 but when the instructions are executed, the MOVEA instruction's value
355 is signed extended, so the sum becomes:
356
357 0x00120000
358 + 0xffffa456
359 ------------
360 0x0011a456 but 'fred + 0x123456' = 0x0012a456
361
362 Note that if the 15th bit was set in the value stored in the LO16
363 reloc, then we do not have to do anything:
364
365 movhi hi( fred + 0x10ffff ), r0, r1
366 movea lo( fred + 0x10ffff ), r1, r1
367
368 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
369 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
370
371 0x00110000
372 + 0x00006fff
373 ------------
374 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
375
376 Overflow can also occur if the computation carries into the 16th bit
377 and it also results in the 15th bit having the same value as the 15th
378 bit of the original value. What happens is that the HI16S reloc
379 will have already examined the 15th bit of the original value and
380 added 1 to the high part if the bit is set. This compensates for the
381 sign extension of 15th bit of the result of the computation. But now
382 there is a carry into the 16th bit, and this has not been allowed for.
383
384 So, for example if fred is at address 0xf000:
385
386 movhi hi( fred + 0xffff ), r0, r1 [bit 15 of the offset is set]
387 movea lo( fred + 0xffff ), r1, r1
388
389 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
390 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
391
392 0x00010000
393 + 0xffffefff
394 ------------
395 0x0000efff but 'fred + 0xffff' = 0x0001efff
396
397 Similarly, if the 15th bit remains clear, but overflow occurs into
398 the 16th bit then (assuming the address of fred is 0xf000):
399
400 movhi hi( fred + 0x7000 ), r0, r1 [bit 15 of the offset is clear]
401 movea lo( fred + 0x7000 ), r1, r1
402
403 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
404 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
405
406 0x00000000
407 + 0x00006fff
408 ------------
409 0x00006fff but 'fred + 0x7000' = 0x00016fff
410
411 Note - there is no need to change anything if a carry occurs, and the
412 15th bit changes its value from being set to being clear, as the HI16S
413 reloc will have already added in 1 to the high part for us:
414
415 movhi hi( fred + 0xffff ), r0, r1 [bit 15 of the offset is set]
416 movea lo( fred + 0xffff ), r1, r1
417
418 HI16S: 0x0001 + (0x00007000 >> 16)
419 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
420
421 0x00010000
422 + 0x00006fff (bit 15 not set, so the top half is zero)
423 ------------
424 0x00016fff which is right (assuming that fred is at 0x7000)
425
426 but if the 15th bit goes from being clear to being set, then we must
427 once again handle overflow:
428
429 movhi hi( fred + 0x7000 ), r0, r1 [bit 15 of the offset is clear]
430 movea lo( fred + 0x7000 ), r1, r1
431
432 HI16S: 0x0000 + (0x0000ffff >> 16)
433 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
434
435 0x00000000
436 + 0x00006fff (bit 15 not set, so the top half is zero)
437 ------------
438 0x00006fff which is wrong (assuming that fred is at 0xffff). */
439
440 static bfd_boolean
441 v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn,
442 unsigned long addend)
443 {
444 #define BIT15_SET(x) ((x) & 0x8000)
445 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
446
447 if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend))
448 || (OVERFLOWS (addend, *insn)
449 && ((! BIT15_SET (*insn)) || (BIT15_SET (addend)))))
450 {
451 bfd_boolean already_updated;
452 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
453 (addend, & already_updated);
454
455 /* Amend the matching HI16_S relocation. */
456 if (hi16s_address != NULL)
457 {
458 if (! already_updated)
459 {
460 unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address);
461 hi_insn += 1;
462 bfd_put_16 (abfd, hi_insn, hi16s_address);
463 }
464 }
465 else
466 {
467 (*_bfd_error_handler) (_("FAILED to find previous HI16 reloc"));
468 return FALSE;
469 }
470 }
471 #undef OVERFLOWS
472 #undef BIT15_SET
473
474 /* Do not complain if value has top bit set, as this has been
475 anticipated. */
476 *insn = (*insn + addend) & 0xffff;
477 return TRUE;
478 }
479
480 /* FIXME: The code here probably ought to be removed and the code in reloc.c
481 allowed to do its stuff instead. At least for most of the relocs, anyway. */
482
483 static bfd_reloc_status_type
484 v850_elf_perform_relocation (bfd *abfd,
485 unsigned int r_type,
486 bfd_vma addend,
487 bfd_byte *address)
488 {
489 unsigned long insn;
490 unsigned long result;
491 bfd_signed_vma saddend = (bfd_signed_vma) addend;
492
493 switch (r_type)
494 {
495 default:
496 #ifdef DEBUG
497 fprintf (stderr, "reloc number %d not recognised\n", r_type);
498 #endif
499 return bfd_reloc_notsupported;
500
501 case R_V850_REL32:
502 case R_V850_ABS32:
503 case R_V810_WORD:
504 case R_V850_PC32:
505 bfd_put_32 (abfd, addend, address);
506 return bfd_reloc_ok;
507
508 case R_V850_WLO23:
509 case R_V850_23:
510 insn = bfd_get_32 (abfd, address);
511 insn &= ~((0x7f << 4) | (0x7fff80 << (16-7)));
512 insn |= ((addend & 0x7f) << 4) | ((addend & 0x7fff80) << (16-7));
513 bfd_put_32 (abfd, (bfd_vma) insn, address);
514 return bfd_reloc_ok;
515
516 case R_V850_PCR22:
517 case R_V850_22_PCREL:
518 if (saddend > 0x1fffff || saddend < -0x200000)
519 return bfd_reloc_overflow;
520
521 if ((addend % 2) != 0)
522 return bfd_reloc_dangerous;
523
524 insn = bfd_get_32 (abfd, address);
525 insn &= ~0xfffe003f;
526 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
527 bfd_put_32 (abfd, (bfd_vma) insn, address);
528 return bfd_reloc_ok;
529
530 case R_V850_PC17:
531 case R_V850_17_PCREL:
532 if (saddend > 0xffff || saddend < -0x10000)
533 return bfd_reloc_overflow;
534
535 if ((addend % 2) != 0)
536 return bfd_reloc_dangerous;
537
538 insn = bfd_get_32 (abfd, address);
539 insn &= ~ 0xfffe0010;
540 insn |= ((addend & 0xfffe) << 16) | ((addend & 0x10000) >> (16-4));
541 break;
542
543 case R_V850_PC16U:
544 case R_V850_16_PCREL:
545 if ((saddend < -0xffff) || (saddend > 0))
546 return bfd_reloc_overflow;
547
548 if ((addend % 2) != 0)
549 return bfd_reloc_dangerous;
550
551 insn = bfd_get_16 (abfd, address);
552 insn &= ~0xfffe;
553 insn |= (-addend & 0xfffe);
554 break;
555
556 case R_V850_PC9:
557 case R_V850_9_PCREL:
558 if (saddend > 0xff || saddend < -0x100)
559 return bfd_reloc_overflow;
560
561 if ((addend % 2) != 0)
562 return bfd_reloc_dangerous;
563
564 insn = bfd_get_16 (abfd, address);
565 insn &= ~ 0xf870;
566 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
567 break;
568
569 case R_V810_WHI:
570 case R_V850_HI16:
571 addend += (bfd_get_16 (abfd, address) << 16);
572 addend = (addend >> 16);
573 insn = addend;
574 break;
575
576 case R_V810_WHI1:
577 case R_V850_HI16_S:
578 /* Remember where this relocation took place. */
579 remember_hi16s_reloc (abfd, addend, address);
580
581 addend += (bfd_get_16 (abfd, address) << 16);
582 addend = (addend >> 16) + ((addend & 0x8000) != 0);
583
584 /* This relocation cannot overflow. */
585 if (addend > 0xffff)
586 addend = 0;
587
588 insn = addend;
589 break;
590
591 case R_V810_WLO:
592 case R_V850_LO16:
593 insn = bfd_get_16 (abfd, address);
594 if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend))
595 return bfd_reloc_overflow;
596 break;
597
598 case R_V810_BYTE:
599 case R_V850_8:
600 addend += (char) bfd_get_8 (abfd, address);
601
602 saddend = (bfd_signed_vma) addend;
603
604 if (saddend > 0x7f || saddend < -0x80)
605 return bfd_reloc_overflow;
606
607 bfd_put_8 (abfd, addend, address);
608 return bfd_reloc_ok;
609
610 case R_V850_CALLT_16_16_OFFSET:
611 addend += bfd_get_16 (abfd, address);
612
613 saddend = (bfd_signed_vma) addend;
614
615 if (saddend > 0xffff || saddend < 0)
616 return bfd_reloc_overflow;
617
618 insn = addend;
619 break;
620
621 case R_V850_CALLT_15_16_OFFSET:
622 insn = bfd_get_16 (abfd, address);
623
624 addend += insn & 0xfffe;
625
626 saddend = (bfd_signed_vma) addend;
627
628 if (saddend > 0xffff || saddend < 0)
629 return bfd_reloc_overflow;
630
631 insn = (0xfffe & addend)
632 | (insn & ~0xfffe);
633 break;
634
635 case R_V850_CALLT_6_7_OFFSET:
636 insn = bfd_get_16 (abfd, address);
637 addend += ((insn & 0x3f) << 1);
638
639 saddend = (bfd_signed_vma) addend;
640
641 if (saddend > 0x7e || saddend < 0)
642 return bfd_reloc_overflow;
643
644 if (addend & 1)
645 return bfd_reloc_dangerous;
646
647 insn &= 0xff80;
648 insn |= (addend >> 1);
649 break;
650
651 case R_V850_16:
652 case R_V810_HWORD:
653 case R_V850_SDA_16_16_OFFSET:
654 case R_V850_ZDA_16_16_OFFSET:
655 case R_V850_TDA_16_16_OFFSET:
656 addend += bfd_get_16 (abfd, address);
657
658 saddend = (bfd_signed_vma) addend;
659
660 if (saddend > 0x7fff || saddend < -0x8000)
661 return bfd_reloc_overflow;
662
663 insn = addend;
664 break;
665
666 case R_V850_16_S1:
667 case R_V850_SDA_15_16_OFFSET:
668 case R_V850_ZDA_15_16_OFFSET:
669 case R_V810_GPWLO_1:
670 insn = bfd_get_16 (abfd, address);
671 addend += (insn & 0xfffe);
672
673 saddend = (bfd_signed_vma) addend;
674
675 if (saddend > 0x7ffe || saddend < -0x8000)
676 return bfd_reloc_overflow;
677
678 if (addend & 1)
679 return bfd_reloc_dangerous;
680
681 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
682 break;
683
684 case R_V850_TDA_6_8_OFFSET:
685 insn = bfd_get_16 (abfd, address);
686 addend += ((insn & 0x7e) << 1);
687
688 saddend = (bfd_signed_vma) addend;
689
690 if (saddend > 0xfc || saddend < 0)
691 return bfd_reloc_overflow;
692
693 if (addend & 3)
694 return bfd_reloc_dangerous;
695
696 insn &= 0xff81;
697 insn |= (addend >> 1);
698 break;
699
700 case R_V850_TDA_7_8_OFFSET:
701 insn = bfd_get_16 (abfd, address);
702 addend += ((insn & 0x7f) << 1);
703
704 saddend = (bfd_signed_vma) addend;
705
706 if (saddend > 0xfe || saddend < 0)
707 return bfd_reloc_overflow;
708
709 if (addend & 1)
710 return bfd_reloc_dangerous;
711
712 insn &= 0xff80;
713 insn |= (addend >> 1);
714 break;
715
716 case R_V850_TDA_7_7_OFFSET:
717 insn = bfd_get_16 (abfd, address);
718 addend += insn & 0x7f;
719
720 saddend = (bfd_signed_vma) addend;
721
722 if (saddend > 0x7f || saddend < 0)
723 return bfd_reloc_overflow;
724
725 insn &= 0xff80;
726 insn |= addend;
727 break;
728
729 case R_V850_TDA_4_5_OFFSET:
730 insn = bfd_get_16 (abfd, address);
731 addend += ((insn & 0xf) << 1);
732
733 saddend = (bfd_signed_vma) addend;
734
735 if (saddend > 0x1e || saddend < 0)
736 return bfd_reloc_overflow;
737
738 if (addend & 1)
739 return bfd_reloc_dangerous;
740
741 insn &= 0xfff0;
742 insn |= (addend >> 1);
743 break;
744
745 case R_V850_TDA_4_4_OFFSET:
746 insn = bfd_get_16 (abfd, address);
747 addend += insn & 0xf;
748
749 saddend = (bfd_signed_vma) addend;
750
751 if (saddend > 0xf || saddend < 0)
752 return bfd_reloc_overflow;
753
754 insn &= 0xfff0;
755 insn |= addend;
756 break;
757
758 case R_V810_WLO_1:
759 case R_V850_HWLO:
760 case R_V850_HWLO_1:
761 case R_V850_LO16_S1:
762 insn = bfd_get_16 (abfd, address);
763 result = insn & 0xfffe;
764 if (! v850_elf_perform_lo16_relocation (abfd, &result, addend))
765 return bfd_reloc_overflow;
766 if (result & 1)
767 return bfd_reloc_overflow;
768 insn = (result & 0xfffe)
769 | (insn & ~0xfffe);
770 bfd_put_16 (abfd, insn, address);
771 return bfd_reloc_ok;
772
773 case R_V850_BLO:
774 case R_V850_LO16_SPLIT_OFFSET:
775 insn = bfd_get_32 (abfd, address);
776 result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5);
777 if (! v850_elf_perform_lo16_relocation (abfd, &result, addend))
778 return bfd_reloc_overflow;
779 insn = (((result << 16) & 0xfffe0000)
780 | ((result << 5) & 0x20)
781 | (insn & ~0xfffe0020));
782 bfd_put_32 (abfd, insn, address);
783 return bfd_reloc_ok;
784
785 case R_V850_16_SPLIT_OFFSET:
786 case R_V850_SDA_16_16_SPLIT_OFFSET:
787 case R_V850_ZDA_16_16_SPLIT_OFFSET:
788 insn = bfd_get_32 (abfd, address);
789 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
790
791 saddend = (bfd_signed_vma) addend;
792
793 if (saddend > 0x7fff || saddend < -0x8000)
794 return bfd_reloc_overflow;
795
796 insn &= 0x0001ffdf;
797 insn |= (addend & 1) << 5;
798 insn |= (addend &~ (bfd_vma) 1) << 16;
799
800 bfd_put_32 (abfd, (bfd_vma) insn, address);
801 return bfd_reloc_ok;
802
803 case R_V850_GNU_VTINHERIT:
804 case R_V850_GNU_VTENTRY:
805 return bfd_reloc_ok;
806
807 }
808
809 bfd_put_16 (abfd, (bfd_vma) insn, address);
810 return bfd_reloc_ok;
811 }
812 \f
813 /* Insert the addend into the instruction. */
814
815 static bfd_reloc_status_type
816 v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED,
817 arelent *reloc,
818 asymbol *symbol,
819 void * data ATTRIBUTE_UNUSED,
820 asection *isection,
821 bfd *obfd,
822 char **err ATTRIBUTE_UNUSED)
823 {
824 long relocation;
825
826 /* If there is an output BFD,
827 and the symbol is not a section name (which is only defined at final link time),
828 and either we are not putting the addend into the instruction
829 or the addend is zero, so there is nothing to add into the instruction
830 then just fixup the address and return. */
831 if (obfd != NULL
832 && (symbol->flags & BSF_SECTION_SYM) == 0
833 && (! reloc->howto->partial_inplace
834 || reloc->addend == 0))
835 {
836 reloc->address += isection->output_offset;
837 return bfd_reloc_ok;
838 }
839
840 /* Catch relocs involving undefined symbols. */
841 if (bfd_is_und_section (symbol->section)
842 && (symbol->flags & BSF_WEAK) == 0
843 && obfd == NULL)
844 return bfd_reloc_undefined;
845
846 /* We handle final linking of some relocs ourselves. */
847
848 /* Is the address of the relocation really within the section? */
849 if (reloc->address > bfd_get_section_limit (abfd, isection))
850 return bfd_reloc_outofrange;
851
852 /* Work out which section the relocation is targeted at and the
853 initial relocation command value. */
854
855 if (reloc->howto->pc_relative)
856 return bfd_reloc_ok;
857
858 /* Get symbol value. (Common symbols are special.) */
859 if (bfd_is_com_section (symbol->section))
860 relocation = 0;
861 else
862 relocation = symbol->value;
863
864 /* Convert input-section-relative symbol value to absolute + addend. */
865 relocation += symbol->section->output_section->vma;
866 relocation += symbol->section->output_offset;
867 relocation += reloc->addend;
868
869 reloc->addend = relocation;
870 return bfd_reloc_ok;
871 }
872
873 /* This function is used for relocs which are only used
874 for relaxing, which the linker should otherwise ignore. */
875
876 static bfd_reloc_status_type
877 v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
878 arelent *reloc_entry,
879 asymbol *symbol ATTRIBUTE_UNUSED,
880 void * data ATTRIBUTE_UNUSED,
881 asection *input_section,
882 bfd *output_bfd,
883 char **error_message ATTRIBUTE_UNUSED)
884 {
885 if (output_bfd != NULL)
886 reloc_entry->address += input_section->output_offset;
887
888 return bfd_reloc_ok;
889 }
890 /* Note: It is REQUIRED that the 'type' value of each entry
891 in this array match the index of the entry in the array.
892 SeeAlso: RELOC_NUBMER in include/elf/v850.h. */
893 static reloc_howto_type v850_elf_howto_table[] =
894 {
895 /* This reloc does nothing. */
896 HOWTO (R_V850_NONE, /* Type. */
897 0, /* Rightshift. */
898 2, /* Size (0 = byte, 1 = short, 2 = long). */
899 32, /* Bitsize. */
900 FALSE, /* PC_relative. */
901 0, /* Bitpos. */
902 complain_overflow_bitfield, /* Complain_on_overflow. */
903 bfd_elf_generic_reloc, /* Special_function. */
904 "R_V850_NONE", /* Name. */
905 FALSE, /* Partial_inplace. */
906 0, /* Src_mask. */
907 0, /* Dst_mask. */
908 FALSE), /* PCrel_offset. */
909
910 /* A PC relative 9 bit branch. */
911 HOWTO (R_V850_9_PCREL, /* Type. */
912 0, /* Rightshift. */
913 1, /* Size (0 = byte, 1 = short, 2 = long). */
914 9, /* Bitsize. */
915 TRUE, /* PC_relative. */
916 0, /* Bitpos. */
917 complain_overflow_bitfield, /* Complain_on_overflow. */
918 v850_elf_reloc, /* Special_function. */
919 "R_V850_9_PCREL", /* Name. */
920 FALSE, /* Partial_inplace. */
921 0x00ffffff, /* Src_mask. */
922 0x00ffffff, /* Dst_mask. */
923 TRUE), /* PCrel_offset. */
924
925 /* A PC relative 22 bit branch. */
926 HOWTO (R_V850_22_PCREL, /* Type. */
927 0, /* Rightshift. */
928 2, /* Size (0 = byte, 1 = short, 2 = long). */
929 22, /* Bitsize. */
930 TRUE, /* PC_relative. */
931 0, /* Bitpos. */
932 complain_overflow_signed, /* Complain_on_overflow. */
933 v850_elf_reloc, /* Special_function. */
934 "R_V850_22_PCREL", /* Name. */
935 FALSE, /* Partial_inplace. */
936 0x07ffff80, /* Src_mask. */
937 0x07ffff80, /* Dst_mask. */
938 TRUE), /* PCrel_offset. */
939
940 /* High 16 bits of symbol value. */
941 HOWTO (R_V850_HI16_S, /* Type. */
942 0, /* Rightshift. */
943 1, /* Size (0 = byte, 1 = short, 2 = long). */
944 16, /* Bitsize. */
945 FALSE, /* PC_relative. */
946 0, /* Bitpos. */
947 complain_overflow_dont, /* Complain_on_overflow. */
948 v850_elf_reloc, /* Special_function. */
949 "R_V850_HI16_S", /* Name. */
950 FALSE, /* Partial_inplace. */
951 0xffff, /* Src_mask. */
952 0xffff, /* Dst_mask. */
953 FALSE), /* PCrel_offset. */
954
955 /* High 16 bits of symbol value. */
956 HOWTO (R_V850_HI16, /* Type. */
957 0, /* Rightshift. */
958 1, /* Size (0 = byte, 1 = short, 2 = long). */
959 16, /* Bitsize. */
960 FALSE, /* PC_relative. */
961 0, /* Bitpos. */
962 complain_overflow_dont, /* Complain_on_overflow. */
963 v850_elf_reloc, /* Special_function. */
964 "R_V850_HI16", /* Name. */
965 FALSE, /* Partial_inplace. */
966 0xffff, /* Src_mask. */
967 0xffff, /* Dst_mask. */
968 FALSE), /* PCrel_offset. */
969
970 /* Low 16 bits of symbol value. */
971 HOWTO (R_V850_LO16, /* Type. */
972 0, /* Rightshift. */
973 1, /* Size (0 = byte, 1 = short, 2 = long). */
974 16, /* Bitsize. */
975 FALSE, /* PC_relative. */
976 0, /* Bitpos. */
977 complain_overflow_dont, /* Complain_on_overflow. */
978 v850_elf_reloc, /* Special_function. */
979 "R_V850_LO16", /* Name. */
980 FALSE, /* Partial_inplace. */
981 0xffff, /* Src_mask. */
982 0xffff, /* Dst_mask. */
983 FALSE), /* PCrel_offset. */
984
985 /* Simple 32bit reloc. */
986 HOWTO (R_V850_ABS32, /* Type. */
987 0, /* Rightshift. */
988 2, /* Size (0 = byte, 1 = short, 2 = long). */
989 32, /* Bitsize. */
990 FALSE, /* PC_relative. */
991 0, /* Bitpos. */
992 complain_overflow_dont, /* Complain_on_overflow. */
993 v850_elf_reloc, /* Special_function. */
994 "R_V850_ABS32", /* Name. */
995 FALSE, /* Partial_inplace. */
996 0xffffffff, /* Src_mask. */
997 0xffffffff, /* Dst_mask. */
998 FALSE), /* PCrel_offset. */
999
1000 /* Simple 16bit reloc. */
1001 HOWTO (R_V850_16, /* Type. */
1002 0, /* Rightshift. */
1003 1, /* Size (0 = byte, 1 = short, 2 = long). */
1004 16, /* Bitsize. */
1005 FALSE, /* PC_relative. */
1006 0, /* Bitpos. */
1007 complain_overflow_dont, /* Complain_on_overflow. */
1008 bfd_elf_generic_reloc, /* Special_function. */
1009 "R_V850_16", /* Name. */
1010 FALSE, /* Partial_inplace. */
1011 0xffff, /* Src_mask. */
1012 0xffff, /* Dst_mask. */
1013 FALSE), /* PCrel_offset. */
1014
1015 /* Simple 8bit reloc. */
1016 HOWTO (R_V850_8, /* Type. */
1017 0, /* Rightshift. */
1018 0, /* Size (0 = byte, 1 = short, 2 = long). */
1019 8, /* Bitsize. */
1020 FALSE, /* PC_relative. */
1021 0, /* Bitpos. */
1022 complain_overflow_dont, /* Complain_on_overflow. */
1023 bfd_elf_generic_reloc, /* Special_function. */
1024 "R_V850_8", /* Name. */
1025 FALSE, /* Partial_inplace. */
1026 0xff, /* Src_mask. */
1027 0xff, /* Dst_mask. */
1028 FALSE), /* PCrel_offset. */
1029
1030 /* 16 bit offset from the short data area pointer. */
1031 HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */
1032 0, /* Rightshift. */
1033 1, /* Size (0 = byte, 1 = short, 2 = long). */
1034 16, /* Bitsize. */
1035 FALSE, /* PC_relative. */
1036 0, /* Bitpos. */
1037 complain_overflow_dont, /* Complain_on_overflow. */
1038 v850_elf_reloc, /* Special_function. */
1039 "R_V850_SDA_16_16_OFFSET", /* Name. */
1040 FALSE, /* Partial_inplace. */
1041 0xffff, /* Src_mask. */
1042 0xffff, /* Dst_mask. */
1043 FALSE), /* PCrel_offset. */
1044
1045 /* 15 bit offset from the short data area pointer. */
1046 HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */
1047 1, /* Rightshift. */
1048 1, /* Size (0 = byte, 1 = short, 2 = long). */
1049 16, /* Bitsize. */
1050 FALSE, /* PC_relative. */
1051 1, /* Bitpos. */
1052 complain_overflow_dont, /* Complain_on_overflow. */
1053 v850_elf_reloc, /* Special_function. */
1054 "R_V850_SDA_15_16_OFFSET", /* Name. */
1055 FALSE, /* Partial_inplace. */
1056 0xfffe, /* Src_mask. */
1057 0xfffe, /* Dst_mask. */
1058 FALSE), /* PCrel_offset. */
1059
1060 /* 16 bit offset from the zero data area pointer. */
1061 HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */
1062 0, /* Rightshift. */
1063 1, /* Size (0 = byte, 1 = short, 2 = long). */
1064 16, /* Bitsize. */
1065 FALSE, /* PC_relative. */
1066 0, /* Bitpos. */
1067 complain_overflow_dont, /* Complain_on_overflow. */
1068 v850_elf_reloc, /* Special_function. */
1069 "R_V850_ZDA_16_16_OFFSET", /* Name. */
1070 FALSE, /* Partial_inplace. */
1071 0xffff, /* Src_mask. */
1072 0xffff, /* Dst_mask. */
1073 FALSE), /* PCrel_offset. */
1074
1075 /* 15 bit offset from the zero data area pointer. */
1076 HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */
1077 1, /* Rightshift. */
1078 1, /* Size (0 = byte, 1 = short, 2 = long). */
1079 16, /* Bitsize. */
1080 FALSE, /* PC_relative. */
1081 1, /* Bitpos. */
1082 complain_overflow_dont, /* Complain_on_overflow. */
1083 v850_elf_reloc, /* Special_function. */
1084 "R_V850_ZDA_15_16_OFFSET", /* Name. */
1085 FALSE, /* Partial_inplace. */
1086 0xfffe, /* Src_mask. */
1087 0xfffe, /* Dst_mask. */
1088 FALSE), /* PCrel_offset. */
1089
1090 /* 6 bit offset from the tiny data area pointer. */
1091 HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */
1092 2, /* Rightshift. */
1093 1, /* Size (0 = byte, 1 = short, 2 = long). */
1094 8, /* Bitsize. */
1095 FALSE, /* PC_relative. */
1096 1, /* Bitpos. */
1097 complain_overflow_dont, /* Complain_on_overflow. */
1098 v850_elf_reloc, /* Special_function. */
1099 "R_V850_TDA_6_8_OFFSET", /* Name. */
1100 FALSE, /* Partial_inplace. */
1101 0x7e, /* Src_mask. */
1102 0x7e, /* Dst_mask. */
1103 FALSE), /* PCrel_offset. */
1104
1105 /* 8 bit offset from the tiny data area pointer. */
1106 HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */
1107 1, /* Rightshift. */
1108 1, /* Size (0 = byte, 1 = short, 2 = long). */
1109 8, /* Bitsize. */
1110 FALSE, /* PC_relative. */
1111 0, /* Bitpos. */
1112 complain_overflow_dont, /* Complain_on_overflow. */
1113 v850_elf_reloc, /* Special_function. */
1114 "R_V850_TDA_7_8_OFFSET", /* Name. */
1115 FALSE, /* Partial_inplace. */
1116 0x7f, /* Src_mask. */
1117 0x7f, /* Dst_mask. */
1118 FALSE), /* PCrel_offset. */
1119
1120 /* 7 bit offset from the tiny data area pointer. */
1121 HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */
1122 0, /* Rightshift. */
1123 1, /* Size (0 = byte, 1 = short, 2 = long). */
1124 7, /* Bitsize. */
1125 FALSE, /* PC_relative. */
1126 0, /* Bitpos. */
1127 complain_overflow_dont, /* Complain_on_overflow. */
1128 v850_elf_reloc, /* Special_function. */
1129 "R_V850_TDA_7_7_OFFSET", /* Name. */
1130 FALSE, /* Partial_inplace. */
1131 0x7f, /* Src_mask. */
1132 0x7f, /* Dst_mask. */
1133 FALSE), /* PCrel_offset. */
1134
1135 /* 16 bit offset from the tiny data area pointer! */
1136 HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */
1137 0, /* Rightshift. */
1138 1, /* Size (0 = byte, 1 = short, 2 = long). */
1139 16, /* Bitsize. */
1140 FALSE, /* PC_relative. */
1141 0, /* Bitpos. */
1142 complain_overflow_dont, /* Complain_on_overflow. */
1143 v850_elf_reloc, /* Special_function. */
1144 "R_V850_TDA_16_16_OFFSET", /* Name. */
1145 FALSE, /* Partial_inplace. */
1146 0xffff, /* Src_mask. */
1147 0xfff, /* Dst_mask. */
1148 FALSE), /* PCrel_offset. */
1149
1150 /* 5 bit offset from the tiny data area pointer. */
1151 HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */
1152 1, /* Rightshift. */
1153 1, /* Size (0 = byte, 1 = short, 2 = long). */
1154 5, /* Bitsize. */
1155 FALSE, /* PC_relative. */
1156 0, /* Bitpos. */
1157 complain_overflow_dont, /* Complain_on_overflow. */
1158 v850_elf_reloc, /* Special_function. */
1159 "R_V850_TDA_4_5_OFFSET", /* Name. */
1160 FALSE, /* Partial_inplace. */
1161 0x0f, /* Src_mask. */
1162 0x0f, /* Dst_mask. */
1163 FALSE), /* PCrel_offset. */
1164
1165 /* 4 bit offset from the tiny data area pointer. */
1166 HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */
1167 0, /* Rightshift. */
1168 1, /* Size (0 = byte, 1 = short, 2 = long). */
1169 4, /* Bitsize. */
1170 FALSE, /* PC_relative. */
1171 0, /* Bitpos. */
1172 complain_overflow_dont, /* Complain_on_overflow. */
1173 v850_elf_reloc, /* Special_function. */
1174 "R_V850_TDA_4_4_OFFSET", /* Name. */
1175 FALSE, /* Partial_inplace. */
1176 0x0f, /* Src_mask. */
1177 0x0f, /* Dst_mask. */
1178 FALSE), /* PCrel_offset. */
1179
1180 /* 16 bit offset from the short data area pointer. */
1181 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */
1182 0, /* Rightshift. */
1183 2, /* Size (0 = byte, 1 = short, 2 = long). */
1184 16, /* Bitsize. */
1185 FALSE, /* PC_relative. */
1186 0, /* Bitpos. */
1187 complain_overflow_dont, /* Complain_on_overflow. */
1188 v850_elf_reloc, /* Special_function. */
1189 "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */
1190 FALSE, /* Partial_inplace. */
1191 0xfffe0020, /* Src_mask. */
1192 0xfffe0020, /* Dst_mask. */
1193 FALSE), /* PCrel_offset. */
1194
1195 /* 16 bit offset from the zero data area pointer. */
1196 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */
1197 0, /* Rightshift. */
1198 2, /* Size (0 = byte, 1 = short, 2 = long). */
1199 16, /* Bitsize. */
1200 FALSE, /* PC_relative. */
1201 0, /* Bitpos. */
1202 complain_overflow_dont, /* Complain_on_overflow. */
1203 v850_elf_reloc, /* Special_function. */
1204 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */
1205 FALSE, /* Partial_inplace. */
1206 0xfffe0020, /* Src_mask. */
1207 0xfffe0020, /* Dst_mask. */
1208 FALSE), /* PCrel_offset. */
1209
1210 /* 6 bit offset from the call table base pointer. */
1211 HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */
1212 0, /* Rightshift. */
1213 1, /* Size (0 = byte, 1 = short, 2 = long). */
1214 7, /* Bitsize. */
1215 FALSE, /* PC_relative. */
1216 0, /* Bitpos. */
1217 complain_overflow_dont, /* Complain_on_overflow. */
1218 v850_elf_reloc, /* Special_function. */
1219 "R_V850_CALLT_6_7_OFFSET", /* Name. */
1220 FALSE, /* Partial_inplace. */
1221 0x3f, /* Src_mask. */
1222 0x3f, /* Dst_mask. */
1223 FALSE), /* PCrel_offset. */
1224
1225 /* 16 bit offset from the call table base pointer. */
1226 HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */
1227 0, /* Rightshift. */
1228 1, /* Size (0 = byte, 1 = short, 2 = long). */
1229 16, /* Bitsize. */
1230 FALSE, /* PC_relative. */
1231 0, /* Bitpos. */
1232 complain_overflow_dont, /* Complain_on_overflow. */
1233 v850_elf_reloc, /* Special_function. */
1234 "R_V850_CALLT_16_16_OFFSET", /* Name. */
1235 FALSE, /* Partial_inplace. */
1236 0xffff, /* Src_mask. */
1237 0xffff, /* Dst_mask. */
1238 FALSE), /* PCrel_offset. */
1239
1240
1241 /* GNU extension to record C++ vtable hierarchy */
1242 HOWTO (R_V850_GNU_VTINHERIT, /* Type. */
1243 0, /* Rightshift. */
1244 2, /* Size (0 = byte, 1 = short, 2 = long). */
1245 0, /* Bitsize. */
1246 FALSE, /* PC_relative. */
1247 0, /* Bitpos. */
1248 complain_overflow_dont, /* Complain_on_overflow. */
1249 NULL, /* Special_function. */
1250 "R_V850_GNU_VTINHERIT", /* Name. */
1251 FALSE, /* Partial_inplace. */
1252 0, /* Src_mask. */
1253 0, /* Dst_mask. */
1254 FALSE), /* PCrel_offset. */
1255
1256 /* GNU extension to record C++ vtable member usage. */
1257 HOWTO (R_V850_GNU_VTENTRY, /* Type. */
1258 0, /* Rightshift. */
1259 2, /* Size (0 = byte, 1 = short, 2 = long). */
1260 0, /* Bitsize. */
1261 FALSE, /* PC_relative. */
1262 0, /* Bitpos. */
1263 complain_overflow_dont, /* Complain_on_overflow. */
1264 _bfd_elf_rel_vtable_reloc_fn, /* Special_function. */
1265 "R_V850_GNU_VTENTRY", /* Name. */
1266 FALSE, /* Partial_inplace. */
1267 0, /* Src_mask. */
1268 0, /* Dst_mask. */
1269 FALSE), /* PCrel_offset. */
1270
1271 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
1272 pseudo-op when it finds a function call which can be relaxed. */
1273 HOWTO (R_V850_LONGCALL, /* Type. */
1274 0, /* Rightshift. */
1275 2, /* Size (0 = byte, 1 = short, 2 = long). */
1276 32, /* Bitsize. */
1277 TRUE, /* PC_relative. */
1278 0, /* Bitpos. */
1279 complain_overflow_signed, /* Complain_on_overflow. */
1280 v850_elf_ignore_reloc, /* Special_function. */
1281 "R_V850_LONGCALL", /* Name. */
1282 FALSE, /* Partial_inplace. */
1283 0, /* Src_mask. */
1284 0, /* Dst_mask. */
1285 TRUE), /* PCrel_offset. */
1286
1287 /* Indicates a .longjump pseudo-op. The compiler will generate a
1288 .longjump pseudo-op when it finds a branch which can be relaxed. */
1289 HOWTO (R_V850_LONGJUMP, /* Type. */
1290 0, /* Rightshift. */
1291 2, /* Size (0 = byte, 1 = short, 2 = long). */
1292 32, /* Bitsize. */
1293 TRUE, /* PC_relative. */
1294 0, /* Bitpos. */
1295 complain_overflow_signed, /* Complain_on_overflow. */
1296 v850_elf_ignore_reloc, /* Special_function. */
1297 "R_V850_LONGJUMP", /* Name. */
1298 FALSE, /* Partial_inplace. */
1299 0, /* Src_mask. */
1300 0, /* Dst_mask. */
1301 TRUE), /* PCrel_offset. */
1302
1303 HOWTO (R_V850_ALIGN, /* Type. */
1304 0, /* Rightshift. */
1305 1, /* Size (0 = byte, 1 = short, 2 = long). */
1306 0, /* Bitsize. */
1307 FALSE, /* PC_relative. */
1308 0, /* Bitpos. */
1309 complain_overflow_unsigned, /* Complain_on_overflow. */
1310 v850_elf_ignore_reloc, /* Special_function. */
1311 "R_V850_ALIGN", /* Name. */
1312 FALSE, /* Partial_inplace. */
1313 0, /* Src_mask. */
1314 0, /* Dst_mask. */
1315 TRUE), /* PCrel_offset. */
1316
1317 /* Simple pc-relative 32bit reloc. */
1318 HOWTO (R_V850_REL32, /* Type. */
1319 0, /* Rightshift. */
1320 2, /* Size (0 = byte, 1 = short, 2 = long). */
1321 32, /* Bitsize. */
1322 TRUE, /* PC_relative. */
1323 0, /* Bitpos. */
1324 complain_overflow_dont, /* Complain_on_overflow. */
1325 v850_elf_reloc, /* Special_function. */
1326 "R_V850_REL32", /* Name. */
1327 FALSE, /* Partial_inplace. */
1328 0xffffffff, /* Src_mask. */
1329 0xffffffff, /* Dst_mask. */
1330 FALSE), /* PCrel_offset. */
1331
1332 /* An ld.bu version of R_V850_LO16. */
1333 HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */
1334 0, /* Rightshift. */
1335 2, /* Size (0 = byte, 1 = short, 2 = long). */
1336 16, /* Bitsize. */
1337 FALSE, /* PC_relative. */
1338 0, /* Bitpos. */
1339 complain_overflow_dont, /* Complain_on_overflow. */
1340 v850_elf_reloc, /* Special_function. */
1341 "R_V850_LO16_SPLIT_OFFSET", /* Name. */
1342 FALSE, /* Partial_inplace. */
1343 0xfffe0020, /* Src_mask. */
1344 0xfffe0020, /* Dst_mask. */
1345 FALSE), /* PCrel_offset. */
1346
1347 /* A unsigned PC relative 16 bit loop. */
1348 HOWTO (R_V850_16_PCREL, /* Type. */
1349 0, /* Rightshift. */
1350 1, /* Size (0 = byte, 1 = short, 2 = long). */
1351 16, /* Bitsize. */
1352 TRUE, /* PC_relative. */
1353 0, /* Bitpos. */
1354 complain_overflow_bitfield, /* Complain_on_overflow. */
1355 v850_elf_reloc, /* Special_function. */
1356 "R_V850_16_PCREL", /* Name. */
1357 FALSE, /* Partial_inplace. */
1358 0xfffe, /* Src_mask. */
1359 0xfffe, /* Dst_mask. */
1360 TRUE), /* PCrel_offset. */
1361
1362 /* A PC relative 17 bit branch. */
1363 HOWTO (R_V850_17_PCREL, /* Type. */
1364 0, /* Rightshift. */
1365 2, /* Size (0 = byte, 1 = short, 2 = long). */
1366 17, /* Bitsize. */
1367 TRUE, /* PC_relative. */
1368 0, /* Bitpos. */
1369 complain_overflow_bitfield, /* Complain_on_overflow. */
1370 v850_elf_reloc, /* Special_function. */
1371 "R_V850_17_PCREL", /* Name. */
1372 FALSE, /* Partial_inplace. */
1373 0x0010fffe, /* Src_mask. */
1374 0x0010fffe, /* Dst_mask. */
1375 TRUE), /* PCrel_offset. */
1376
1377 /* A 23bit offset ld/st. */
1378 HOWTO (R_V850_23, /* type. */
1379 0, /* rightshift. */
1380 2, /* size (0 = byte, 1 = short, 2 = long). */
1381 23, /* bitsize. */
1382 FALSE, /* pc_relative. */
1383 0, /* bitpos. */
1384 complain_overflow_dont, /* complain_on_overflow. */
1385 v850_elf_reloc, /* special_function. */
1386 "R_V850_23", /* name. */
1387 FALSE, /* partial_inplace. */
1388 0xffff07f0, /* src_mask. */
1389 0xffff07f0, /* dst_mask. */
1390 FALSE), /* pcrel_offset. */
1391
1392 /* A PC relative 32 bit branch. */
1393 HOWTO (R_V850_32_PCREL, /* type. */
1394 1, /* rightshift. */
1395 2, /* size (0 = byte, 1 = short, 2 = long). */
1396 32, /* bitsize. */
1397 TRUE, /* pc_relative. */
1398 1, /* bitpos. */
1399 complain_overflow_signed, /* complain_on_overflow. */
1400 v850_elf_reloc, /* special_function. */
1401 "R_V850_32_PCREL", /* name. */
1402 FALSE, /* partial_inplace. */
1403 0xfffffffe, /* src_mask. */
1404 0xfffffffe, /* dst_mask. */
1405 TRUE), /* pcrel_offset. */
1406
1407 /* A absolute 32 bit branch. */
1408 HOWTO (R_V850_32_ABS, /* type. */
1409 1, /* rightshift. */
1410 2, /* size (0 = byte, 1 = short, 2 = long). */
1411 32, /* bitsize. */
1412 TRUE, /* pc_relative. */
1413 1, /* bitpos. */
1414 complain_overflow_signed, /* complain_on_overflow. */
1415 v850_elf_reloc, /* special_function. */
1416 "R_V850_32_ABS", /* name. */
1417 FALSE, /* partial_inplace. */
1418 0xfffffffe, /* src_mask. */
1419 0xfffffffe, /* dst_mask. */
1420 FALSE), /* pcrel_offset. */
1421
1422 /* High 16 bits of symbol value. */
1423 HOWTO (R_V850_HI16, /* Type. */
1424 0, /* Rightshift. */
1425 1, /* Size (0 = byte, 1 = short, 2 = long). */
1426 16, /* Bitsize. */
1427 FALSE, /* PC_relative. */
1428 0, /* Bitpos. */
1429 complain_overflow_dont, /* Complain_on_overflow. */
1430 v850_elf_reloc, /* Special_function. */
1431 "R_V850_HI16", /* Name. */
1432 FALSE, /* Partial_inplace. */
1433 0xffff, /* Src_mask. */
1434 0xffff, /* Dst_mask. */
1435 FALSE), /* PCrel_offset. */
1436
1437 /* Low 16 bits of symbol value. */
1438 HOWTO (R_V850_16_S1, /* type. */
1439 1, /* rightshift. */
1440 1, /* size (0 = byte, 1 = short, 2 = long). */
1441 16, /* bitsize. */
1442 FALSE, /* pc_relative. */
1443 1, /* bitpos. */
1444 complain_overflow_dont, /* complain_on_overflow. */
1445 v850_elf_reloc, /* special_function. */
1446 "R_V850_16_S1", /* name. */
1447 FALSE, /* partial_inplace. */
1448 0xfffe, /* src_mask. */
1449 0xfffe, /* dst_mask. */
1450 FALSE), /* pcrel_offset. */
1451
1452 /* Low 16 bits of symbol value. */
1453 HOWTO (R_V850_LO16_S1, /* type. */
1454 1, /* rightshift. */
1455 1, /* size (0 = byte, 1 = short, 2 = long). */
1456 16, /* bitsize. */
1457 FALSE, /* pc_relative. */
1458 1, /* bitpos. */
1459 complain_overflow_dont, /* complain_on_overflow. */
1460 v850_elf_reloc, /* special_function. */
1461 "R_V850_LO16_S1", /* name. */
1462 FALSE, /* partial_inplace. */
1463 0xfffe, /* src_mask. */
1464 0xfffe, /* dst_mask. */
1465 FALSE), /* pcrel_offset. */
1466
1467 /* 16 bit offset from the call table base pointer. */
1468 HOWTO (R_V850_CALLT_15_16_OFFSET, /* type. */
1469 1, /* rightshift. */
1470 1, /* size (0 = byte, 1 = short, 2 = long). */
1471 16, /* bitsize. */
1472 FALSE, /* pc_relative. */
1473 1, /* bitpos. */
1474 complain_overflow_dont, /* complain_on_overflow. */
1475 v850_elf_reloc, /* special_function. */
1476 "R_V850_CALLT_15_16_OFFSET", /* name. */
1477 FALSE, /* partial_inplace. */
1478 0xfffe, /* src_mask. */
1479 0xfffe, /* dst_mask. */
1480 FALSE), /* pcrel_offset. */
1481
1482 /* Like R_V850_32 PCREL, but referring to the GOT table entry for
1483 the symbol. */
1484 HOWTO (R_V850_32_GOTPCREL, /* type. */
1485 0, /* rightshift. */
1486 2, /* size (0 = byte, 1 = short, 2 = long). */
1487 32, /* bitsize. */
1488 TRUE, /* pc_relative. */
1489 0, /* bitpos. */
1490 complain_overflow_unsigned, /* complain_on_overflow. */
1491 v850_elf_reloc, /* special_function. */
1492 "R_V850_32_GOTPCREL", /* name. */
1493 FALSE, /* partial_inplace. */
1494 0xffffffff, /* src_mask. */
1495 0xffffffff, /* dst_mask. */
1496 TRUE), /* pcrel_offset. */
1497
1498 /* Like R_V850_SDA_, but referring to the GOT table entry for
1499 the symbol. */
1500 HOWTO (R_V850_16_GOT, /* type. */
1501 0, /* rightshift. */
1502 2, /* size (0 = byte, 1 = short, 2 = long). */
1503 16, /* bitsize. */
1504 FALSE, /* pc_relative. */
1505 0, /* bitpos. */
1506 complain_overflow_unsigned, /* complain_on_overflow. */
1507 bfd_elf_generic_reloc, /* special_function. */
1508 "R_V850_16_GOT", /* name. */
1509 FALSE, /* partial_inplace. */
1510 0xffff, /* src_mask. */
1511 0xffff, /* dst_mask. */
1512 FALSE), /* pcrel_offset. */
1513
1514 HOWTO (R_V850_32_GOT, /* type. */
1515 0, /* rightshift. */
1516 2, /* size (0 = byte, 1 = short, 2 = long). */
1517 32, /* bitsize. */
1518 FALSE, /* pc_relative. */
1519 0, /* bitpos. */
1520 complain_overflow_unsigned, /* complain_on_overflow. */
1521 bfd_elf_generic_reloc, /* special_function. */
1522 "R_V850_32_GOT", /* name. */
1523 FALSE, /* partial_inplace. */
1524 0xffffffff, /* src_mask. */
1525 0xffffffff, /* dst_mask. */
1526 FALSE), /* pcrel_offset. */
1527
1528 /* Like R_V850_22_PCREL, but referring to the procedure linkage table
1529 entry for the symbol. */
1530 HOWTO (R_V850_22_PLT, /* type. */
1531 1, /* rightshift. */
1532 2, /* size (0 = byte, 1 = short, 2 = long). */
1533 22, /* bitsize. */
1534 TRUE, /* pc_relative. */
1535 7, /* bitpos. */
1536 complain_overflow_signed, /* complain_on_overflow. */
1537 bfd_elf_generic_reloc, /* special_function. */
1538 "R_V850_22_PLT", /* name. */
1539 FALSE, /* partial_inplace. */
1540 0x07ffff80, /* src_mask. */
1541 0x07ffff80, /* dst_mask. */
1542 TRUE), /* pcrel_offset. */
1543
1544 HOWTO (R_V850_32_PLT, /* type. */
1545 1, /* rightshift. */
1546 2, /* size (0 = byte, 1 = short, 2 = long). */
1547 32, /* bitsize. */
1548 TRUE, /* pc_relative. */
1549 1, /* bitpos. */
1550 complain_overflow_signed, /* complain_on_overflow. */
1551 bfd_elf_generic_reloc, /* special_function. */
1552 "R_V850_32_PLT", /* name. */
1553 FALSE, /* partial_inplace. */
1554 0xffffffff, /* src_mask. */
1555 0xffffffff, /* dst_mask. */
1556 TRUE), /* pcrel_offset. */
1557
1558 /* This is used only by the dynamic linker. The symbol should exist
1559 both in the object being run and in some shared library. The
1560 dynamic linker copies the data addressed by the symbol from the
1561 shared library into the object, because the object being
1562 run has to have the data at some particular address. */
1563 HOWTO (R_V850_COPY, /* type. */
1564 0, /* rightshift. */
1565 2, /* size (0 = byte, 1 = short, 2 = long). */
1566 32, /* bitsize. */
1567 FALSE, /* pc_relative. */
1568 0, /* bitpos. */
1569 complain_overflow_bitfield, /* complain_on_overflow. */
1570 bfd_elf_generic_reloc, /* special_function. */
1571 "R_V850_COPY", /* name. */
1572 FALSE, /* partial_inplace. */
1573 0xffffffff, /* src_mask. */
1574 0xffffffff, /* dst_mask. */
1575 FALSE), /* pcrel_offset. */
1576
1577 /* Like R_M32R_24, but used when setting global offset table
1578 entries. */
1579 HOWTO (R_V850_GLOB_DAT, /* type. */
1580 0, /* rightshift. */
1581 2, /* size (0 = byte, 1 = short, 2 = long) */
1582 32, /* bitsize. */
1583 FALSE, /* pc_relative. */
1584 0, /* bitpos. */
1585 complain_overflow_bitfield, /* complain_on_overflow. */
1586 bfd_elf_generic_reloc, /* special_function. */
1587 "R_V850_GLOB_DAT", /* name. */
1588 FALSE, /* partial_inplace. */
1589 0xffffffff, /* src_mask. */
1590 0xffffffff, /* dst_mask. */
1591 FALSE), /* pcrel_offset. */
1592
1593 /* Marks a procedure linkage table entry for a symbol. */
1594 HOWTO (R_V850_JMP_SLOT, /* type. */
1595 0, /* rightshift. */
1596 2, /* size (0 = byte, 1 = short, 2 = long) */
1597 32, /* bitsize. */
1598 FALSE, /* pc_relative. */
1599 0, /* bitpos. */
1600 complain_overflow_bitfield, /* complain_on_overflow. */
1601 bfd_elf_generic_reloc, /* special_function. */
1602 "R_V850_JMP_SLOT", /* name. */
1603 FALSE, /* partial_inplace. */
1604 0xffffffff, /* src_mask. */
1605 0xffffffff, /* dst_mask. */
1606 FALSE), /* pcrel_offset. */
1607
1608 /* Used only by the dynamic linker. When the object is run, this
1609 longword is set to the load address of the object, plus the
1610 addend. */
1611 HOWTO (R_V850_RELATIVE, /* type. */
1612 0, /* rightshift. */
1613 2, /* size (0 = byte, 1 = short, 2 = long) */
1614 32, /* bitsize. */
1615 FALSE, /* pc_relative. */
1616 0, /* bitpos. */
1617 complain_overflow_bitfield, /* complain_on_overflow. */
1618 bfd_elf_generic_reloc, /* special_function. */
1619 "R_V850_RELATIVE", /* name. */
1620 FALSE, /* partial_inplace. */
1621 0xffffffff, /* src_mask. */
1622 0xffffffff, /* dst_mask. */
1623 FALSE), /* pcrel_offset. */
1624
1625 HOWTO (R_V850_16_GOTOFF, /* type. */
1626 0, /* rightshift. */
1627 2, /* size (0 = byte, 1 = short, 2 = long) */
1628 16, /* bitsize. */
1629 FALSE, /* pc_relative. */
1630 0, /* bitpos. */
1631 complain_overflow_bitfield, /* complain_on_overflow. */
1632 bfd_elf_generic_reloc, /* special_function. */
1633 "R_V850_16_GOTOFF", /* name. */
1634 FALSE, /* partial_inplace. */
1635 0xffff, /* src_mask. */
1636 0xffff, /* dst_mask. */
1637 FALSE), /* pcrel_offset. */
1638
1639 HOWTO (R_V850_32_GOTOFF, /* type. */
1640 0, /* rightshift. */
1641 2, /* size (0 = byte, 1 = short, 2 = long) */
1642 32, /* bitsize. */
1643 FALSE, /* pc_relative. */
1644 0, /* bitpos. */
1645 complain_overflow_bitfield, /* complain_on_overflow. */
1646 bfd_elf_generic_reloc, /* special_function. */
1647 "R_V850_32_GOTOFF", /* name. */
1648 FALSE, /* partial_inplace. */
1649 0xffffffff, /* src_mask. */
1650 0xffffffff, /* dst_mask. */
1651 FALSE), /* pcrel_offset. */
1652
1653 HOWTO (R_V850_CODE, /* type. */
1654 0, /* rightshift. */
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1656 0, /* bitsize. */
1657 FALSE, /* pc_relative. */
1658 0, /* bitpos. */
1659 complain_overflow_unsigned, /* complain_on_overflow. */
1660 v850_elf_ignore_reloc, /* special_function. */
1661 "R_V850_CODE", /* name. */
1662 FALSE, /* partial_inplace. */
1663 0, /* src_mask. */
1664 0, /* dst_mask. */
1665 TRUE), /* pcrel_offset. */
1666
1667 HOWTO (R_V850_DATA, /* type. */
1668 0, /* rightshift. */
1669 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 0, /* bitsize. */
1671 FALSE, /* pc_relative. */
1672 0, /* bitpos. */
1673 complain_overflow_unsigned, /* complain_on_overflow. */
1674 v850_elf_ignore_reloc, /* special_function. */
1675 "R_V850_DATA", /* name. */
1676 FALSE, /* partial_inplace. */
1677 0, /* src_mask. */
1678 0, /* dst_mask. */
1679 TRUE), /* pcrel_offset. */
1680
1681 };
1682
1683 /* Map BFD reloc types to V850 ELF reloc types. */
1684
1685 struct v850_elf_reloc_map
1686 {
1687 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
1688 unsigned char. */
1689 bfd_reloc_code_real_type bfd_reloc_val;
1690 unsigned int elf_reloc_val;
1691 };
1692
1693 static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
1694 {
1695 { BFD_RELOC_NONE, R_V850_NONE },
1696 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
1697 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
1698 { BFD_RELOC_HI16_S, R_V850_HI16_S },
1699 { BFD_RELOC_HI16, R_V850_HI16 },
1700 { BFD_RELOC_LO16, R_V850_LO16 },
1701 { BFD_RELOC_32, R_V850_ABS32 },
1702 { BFD_RELOC_32_PCREL, R_V850_REL32 },
1703 { BFD_RELOC_16, R_V850_16 },
1704 { BFD_RELOC_8, R_V850_8 },
1705 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
1706 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
1707 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
1708 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
1709 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
1710 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
1711 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
1712 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
1713 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
1714 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
1715 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET },
1716 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
1717 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
1718 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
1719 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
1720 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
1721 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
1722 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
1723 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
1724 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
1725 { BFD_RELOC_V850_16_PCREL, R_V850_16_PCREL },
1726 { BFD_RELOC_V850_17_PCREL, R_V850_17_PCREL },
1727 { BFD_RELOC_V850_23, R_V850_23 },
1728 { BFD_RELOC_V850_32_PCREL, R_V850_32_PCREL },
1729 { BFD_RELOC_V850_32_ABS, R_V850_32_ABS },
1730 { BFD_RELOC_V850_16_SPLIT_OFFSET, R_V850_HI16 },
1731 { BFD_RELOC_V850_16_S1, R_V850_16_S1 },
1732 { BFD_RELOC_V850_LO16_S1, R_V850_LO16_S1 },
1733 { BFD_RELOC_V850_CALLT_15_16_OFFSET, R_V850_CALLT_15_16_OFFSET },
1734 { BFD_RELOC_V850_32_GOTPCREL, R_V850_32_GOTPCREL },
1735 { BFD_RELOC_V850_16_GOT, R_V850_16_GOT },
1736 { BFD_RELOC_V850_32_GOT, R_V850_32_GOT },
1737 { BFD_RELOC_V850_22_PLT_PCREL, R_V850_22_PLT },
1738 { BFD_RELOC_V850_32_PLT_PCREL, R_V850_32_PLT },
1739 { BFD_RELOC_V850_COPY, R_V850_COPY },
1740 { BFD_RELOC_V850_GLOB_DAT, R_V850_GLOB_DAT },
1741 { BFD_RELOC_V850_JMP_SLOT, R_V850_JMP_SLOT },
1742 { BFD_RELOC_V850_RELATIVE, R_V850_RELATIVE },
1743 { BFD_RELOC_V850_16_GOTOFF, R_V850_16_GOTOFF },
1744 { BFD_RELOC_V850_32_GOTOFF, R_V850_32_GOTOFF },
1745 { BFD_RELOC_V850_CODE, R_V850_CODE },
1746 { BFD_RELOC_V850_DATA, R_V850_DATA },
1747 };
1748
1749 #define V800_RELOC(name,sz,bit,shift,complain,pcrel,resolver) \
1750 HOWTO (name, shift, sz, bit, pcrel, 0, complain_overflow_ ## complain, \
1751 bfd_elf_ ## resolver ## _reloc, #name, FALSE, 0, ~0, FALSE)
1752
1753 #define V800_EMPTY(name) EMPTY_HOWTO (name - R_V810_NONE)
1754
1755 #define bfd_elf_v850_reloc v850_elf_reloc
1756
1757 /* Note: It is REQUIRED that the 'type' value (R_V810_...) of each entry
1758 in this array match the index of the entry in the array minus 0x30.
1759 See: bfd_elf_v850_relocate_section(), v800_elf_reloc_type_lookup()
1760 and v800_elf_info_to_howto(). */
1761
1762 static reloc_howto_type v800_elf_howto_table[] =
1763 {
1764 V800_RELOC (R_V810_NONE, 0, 0, 0, dont, FALSE, generic), /* Type = 0x30 */
1765 V800_RELOC (R_V810_BYTE, 0, 8, 0, dont, FALSE, generic),
1766 V800_RELOC (R_V810_HWORD, 1, 16, 0, dont, FALSE, generic),
1767 V800_RELOC (R_V810_WORD, 2, 32, 0, dont, FALSE, generic),
1768 V800_RELOC (R_V810_WLO, 1, 16, 0, dont, FALSE, generic),
1769 V800_RELOC (R_V810_WHI, 1, 16, 0, dont, FALSE, generic),
1770 V800_RELOC (R_V810_WHI1, 1, 16, 0, dont, FALSE, generic),
1771 V800_RELOC (R_V810_GPBYTE, 0, 8, 0, dont, FALSE, v850),
1772 V800_RELOC (R_V810_GPHWORD, 1, 16, 0, dont, FALSE, v850),
1773 V800_RELOC (R_V810_GPWORD, 2, 32, 0, dont, FALSE, v850),
1774 V800_RELOC (R_V810_GPWLO, 1, 16, 0, dont, FALSE, v850),
1775 V800_RELOC (R_V810_GPWHI, 1, 16, 0, dont, FALSE, v850),
1776 V800_RELOC (R_V810_GPWHI1, 1, 16, 0, dont, FALSE, v850),
1777 V800_RELOC (R_V850_HWLO, 1, 16, 0, dont, FALSE, generic),
1778 V800_EMPTY (R_V810_reserved1),
1779 V800_RELOC (R_V850_EP7BIT, 0, 7, 0, unsigned, FALSE, v850),
1780 V800_RELOC (R_V850_EPHBYTE, 0, 8, 1, unsigned, FALSE, v850),
1781 V800_RELOC (R_V850_EPWBYTE, 0, 8, 2, unsigned, FALSE, v850),
1782 V800_RELOC (R_V850_REGHWLO, 1, 16, 0, dont, FALSE, v850),
1783 V800_EMPTY (R_V810_reserved2),
1784 V800_RELOC (R_V850_GPHWLO, 1, 16, 0, dont, FALSE, v850),
1785 V800_EMPTY (R_V810_reserved3),
1786 V800_RELOC (R_V850_PCR22, 2, 22, 0, signed, TRUE, generic),
1787 V800_RELOC (R_V850_BLO, 2, 24, 0, dont, FALSE, v850),
1788 V800_RELOC (R_V850_EP4BIT, 0, 4, 0, unsigned, FALSE, v850),
1789 V800_RELOC (R_V850_EP5BIT, 0, 5, 0, unsigned, FALSE, v850),
1790 V800_RELOC (R_V850_REGBLO, 2, 24, 0, dont, FALSE, v850),
1791 V800_RELOC (R_V850_GPBLO, 2, 24, 0, dont, FALSE, v850),
1792 V800_RELOC (R_V810_WLO_1, 1, 16, 0, dont, FALSE, v850),
1793 V800_RELOC (R_V810_GPWLO_1, 1, 16, 0, signed, FALSE, v850),
1794 V800_RELOC (R_V850_BLO_1, 2, 16, 0, signed, FALSE, v850),
1795 V800_RELOC (R_V850_HWLO_1, 1, 16, 0, signed, FALSE, v850),
1796 V800_EMPTY (R_V810_reserved4),
1797 V800_RELOC (R_V850_GPBLO_1, 2, 16, 1, signed, FALSE, v850),
1798 V800_RELOC (R_V850_GPHWLO_1, 1, 16, 1, signed, FALSE, v850),
1799 V800_EMPTY (R_V810_reserved5),
1800 V800_RELOC (R_V850_EPBLO, 2, 16, 1, signed, FALSE, v850),
1801 V800_RELOC (R_V850_EPHWLO, 1, 16, 1, signed, FALSE, v850),
1802 V800_EMPTY (R_V810_reserved6),
1803 V800_RELOC (R_V850_EPWLO_N, 1, 16, 1, signed, FALSE, v850),
1804 V800_RELOC (R_V850_PC32, 2, 32, 1, signed, TRUE, v850),
1805 V800_RELOC (R_V850_W23BIT, 2, 23, 1, signed, FALSE, v850),
1806 V800_RELOC (R_V850_GPW23BIT, 2, 23, 1, signed, FALSE, v850),
1807 V800_RELOC (R_V850_EPW23BIT, 2, 23, 1, signed, FALSE, v850),
1808 V800_RELOC (R_V850_B23BIT, 2, 23, 1, signed, FALSE, v850),
1809 V800_RELOC (R_V850_GPB23BIT, 2, 23, 1, signed, FALSE, v850),
1810 V800_RELOC (R_V850_EPB23BIT, 2, 23, 1, signed, FALSE, v850),
1811 V800_RELOC (R_V850_PC16U, 1, 16, 1, unsigned, TRUE, generic),
1812 V800_RELOC (R_V850_PC17, 2, 17, 1, signed, TRUE, generic),
1813 V800_RELOC (R_V850_DW8, 2, 8, 2, signed, FALSE, v850),
1814 V800_RELOC (R_V850_GPDW8, 2, 8, 2, signed, FALSE, v850),
1815 V800_RELOC (R_V850_EPDW8, 2, 8, 2, signed, FALSE, v850),
1816 V800_RELOC (R_V850_PC9, 1, 9, 3, signed, TRUE, v850),
1817 V800_RELOC (R_V810_REGBYTE, 0, 8, 0, dont, FALSE, v850),
1818 V800_RELOC (R_V810_REGHWORD, 1, 16, 0, dont, FALSE, v850),
1819 V800_RELOC (R_V810_REGWORD, 2, 32, 0, dont, FALSE, v850),
1820 V800_RELOC (R_V810_REGWLO, 1, 16, 0, dont, FALSE, v850),
1821 V800_RELOC (R_V810_REGWHI, 1, 16, 0, dont, FALSE, v850),
1822 V800_RELOC (R_V810_REGWHI1, 1, 16, 0, dont, FALSE, v850),
1823 V800_RELOC (R_V850_REGW23BIT, 2, 23, 1, signed, FALSE, v850),
1824 V800_RELOC (R_V850_REGB23BIT, 2, 23, 1, signed, FALSE, v850),
1825 V800_RELOC (R_V850_REGDW8, 2, 8, 2, signed, FALSE, v850),
1826 V800_RELOC (R_V810_EPBYTE, 0, 8, 0, dont, FALSE, v850),
1827 V800_RELOC (R_V810_EPHWORD, 1, 16, 0, dont, FALSE, v850),
1828 V800_RELOC (R_V810_EPWORD, 2, 32, 0, dont, FALSE, v850),
1829 V800_RELOC (R_V850_WLO23, 2, 32, 1, dont, FALSE, v850),
1830 V800_RELOC (R_V850_WORD_E, 2, 32, 1, dont, FALSE, v850),
1831 V800_RELOC (R_V850_REGWORD_E, 2, 32, 1, dont, FALSE, v850),
1832 V800_RELOC (R_V850_WORD, 2, 32, 0, dont, FALSE, v850),
1833 V800_RELOC (R_V850_GPWORD, 2, 32, 0, dont, FALSE, v850),
1834 V800_RELOC (R_V850_REGWORD, 2, 32, 0, dont, FALSE, v850),
1835 V800_RELOC (R_V850_EPWORD, 2, 32, 0, dont, FALSE, v850),
1836 V800_RELOC (R_V810_TPBYTE, 0, 8, 0, dont, FALSE, v850),
1837 V800_RELOC (R_V810_TPHWORD, 1, 16, 0, dont, FALSE, v850),
1838 V800_RELOC (R_V810_TPWORD, 2, 32, 0, dont, FALSE, v850),
1839 V800_RELOC (R_V810_TPWLO, 1, 16, 0, dont, FALSE, v850),
1840 V800_RELOC (R_V810_TPWHI, 1, 16, 0, dont, FALSE, v850),
1841 V800_RELOC (R_V810_TPWHI1, 1, 16, 0, dont, FALSE, v850),
1842 V800_RELOC (R_V850_TPHWLO, 1, 16, 1, dont, FALSE, v850),
1843 V800_RELOC (R_V850_TPBLO, 2, 24, 0, dont, FALSE, v850),
1844 V800_RELOC (R_V810_TPWLO_1, 1, 16, 0, signed, FALSE, v850),
1845 V800_RELOC (R_V850_TPBLO_1, 2, 16, 0, signed, FALSE, v850),
1846 V800_RELOC (R_V850_TPHWLO_1, 1, 16, 0, signed, FALSE, v850),
1847 V800_RELOC (R_V850_TP23BIT, 2, 23, 0, signed, FALSE, v850),
1848 V800_RELOC (R_V850_TPW23BIT, 2, 23, 0, signed, FALSE, v850),
1849 V800_RELOC (R_V850_TPDW8, 2, 8, 0, signed, FALSE, v850)
1850 };
1851 \f
1852 /* Map a bfd relocation into the appropriate howto structure. */
1853
1854 static reloc_howto_type *
1855 v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1856 bfd_reloc_code_real_type code)
1857 {
1858 unsigned int i;
1859
1860 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
1861 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
1862 {
1863 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
1864
1865 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
1866
1867 return v850_elf_howto_table + elf_reloc_val;
1868 }
1869
1870 return NULL;
1871 }
1872
1873 static reloc_howto_type *
1874 v850_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1875 const char *r_name)
1876 {
1877 unsigned int i;
1878
1879 for (i = 0;
1880 i < sizeof (v850_elf_howto_table) / sizeof (v850_elf_howto_table[0]);
1881 i++)
1882 if (v850_elf_howto_table[i].name != NULL
1883 && strcasecmp (v850_elf_howto_table[i].name, r_name) == 0)
1884 return &v850_elf_howto_table[i];
1885
1886 return NULL;
1887 }
1888 \f
1889 /* Set the howto pointer for an V850 ELF reloc. */
1890
1891 static void
1892 v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1893 arelent *cache_ptr,
1894 Elf_Internal_Rela *dst)
1895 {
1896 unsigned int r_type;
1897
1898 r_type = ELF32_R_TYPE (dst->r_info);
1899 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1900 cache_ptr->howto = &v850_elf_howto_table[r_type];
1901 }
1902
1903 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
1904
1905 static void
1906 v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
1907 arelent * cache_ptr,
1908 Elf_Internal_Rela *dst)
1909 {
1910 unsigned int r_type;
1911
1912 r_type = ELF32_R_TYPE (dst->r_info);
1913 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1914 cache_ptr->howto = &v850_elf_howto_table[r_type];
1915 }
1916 \f
1917 static bfd_boolean
1918 v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
1919 {
1920 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1921 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1922 }
1923
1924 static bfd_boolean
1925 v850_elf_is_target_special_symbol (bfd *abfd, asymbol *sym)
1926 {
1927 return v850_elf_is_local_label_name (abfd, sym->name);
1928 }
1929 \f
1930 /* We overload some of the bfd_reloc error codes for own purposes. */
1931 #define bfd_reloc_gp_not_found bfd_reloc_other
1932 #define bfd_reloc_ep_not_found bfd_reloc_continue
1933 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1934
1935 /* Perform a relocation as part of a final link. */
1936
1937 static bfd_reloc_status_type
1938 v850_elf_final_link_relocate (reloc_howto_type *howto,
1939 bfd *input_bfd,
1940 bfd *output_bfd ATTRIBUTE_UNUSED,
1941 asection *input_section,
1942 bfd_byte *contents,
1943 bfd_vma offset,
1944 bfd_vma value,
1945 bfd_vma addend,
1946 struct bfd_link_info *info,
1947 asection *sym_sec,
1948 int is_local ATTRIBUTE_UNUSED)
1949 {
1950 unsigned int r_type = howto->type;
1951 bfd_byte *hit_data = contents + offset;
1952
1953 /* Adjust the value according to the relocation. */
1954 switch (r_type)
1955 {
1956 case R_V850_PC9:
1957 case R_V850_9_PCREL:
1958 value -= (input_section->output_section->vma
1959 + input_section->output_offset);
1960 value -= offset;
1961 break;
1962
1963 case R_V850_PC16U:
1964 case R_V850_16_PCREL:
1965 value -= (input_section->output_section->vma
1966 + input_section->output_offset
1967 + offset);
1968
1969 /* If the sign extension will corrupt the value then we have overflowed. */
1970 if ((value & 0xffff0000) != 0xffff0000)
1971 return bfd_reloc_overflow;
1972
1973 break;
1974
1975 case R_V850_PC17:
1976 case R_V850_17_PCREL:
1977 value -= (input_section->output_section->vma
1978 + input_section->output_offset
1979 + offset);
1980
1981 /* If the sign extension will corrupt the value then we have overflowed. */
1982 if (((value & 0xffff0000) != 0x0) && ((value & 0xffff0000) != 0xffff0000))
1983 return bfd_reloc_overflow;
1984
1985 value = SEXT17 (value);
1986 break;
1987
1988 case R_V850_PCR22:
1989 case R_V850_22_PCREL:
1990 value -= (input_section->output_section->vma
1991 + input_section->output_offset
1992 + offset);
1993
1994 /* If the sign extension will corrupt the value then we have overflowed. */
1995 if (((value & 0xffe00000) != 0x0) && ((value & 0xffe00000) != 0xffe00000))
1996 return bfd_reloc_overflow;
1997
1998 /* Only the bottom 22 bits of the PC are valid. */
1999 value = SEXT22 (value);
2000 break;
2001
2002 case R_V850_PC32:
2003 case R_V850_32_PCREL:
2004 value -= (input_section->output_section->vma
2005 + input_section->output_offset
2006 + offset);
2007 break;
2008
2009 case R_V850_32_ABS:
2010 case R_V850_23:
2011 case R_V850_HI16_S:
2012 case R_V850_HI16:
2013 case R_V850_LO16:
2014 case R_V850_LO16_S1:
2015 case R_V850_LO16_SPLIT_OFFSET:
2016 case R_V850_16:
2017 case R_V850_ABS32:
2018 case R_V850_8:
2019 case R_V810_BYTE:
2020 case R_V810_HWORD:
2021 case R_V810_WORD:
2022 case R_V810_WLO:
2023 case R_V810_WHI:
2024 case R_V810_WHI1:
2025 case R_V810_WLO_1:
2026 case R_V850_WLO23:
2027 case R_V850_BLO:
2028 break;
2029
2030 case R_V850_ZDA_15_16_OFFSET:
2031 case R_V850_ZDA_16_16_OFFSET:
2032 case R_V850_ZDA_16_16_SPLIT_OFFSET:
2033 if (sym_sec == NULL)
2034 return bfd_reloc_undefined;
2035
2036 value -= sym_sec->output_section->vma;
2037 break;
2038
2039 case R_V850_SDA_15_16_OFFSET:
2040 case R_V850_SDA_16_16_OFFSET:
2041 case R_V850_SDA_16_16_SPLIT_OFFSET:
2042 case R_V810_GPWLO_1:
2043 {
2044 unsigned long gp;
2045 struct bfd_link_hash_entry * h;
2046
2047 if (sym_sec == NULL)
2048 return bfd_reloc_undefined;
2049
2050 /* Get the value of __gp. */
2051 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
2052 if (h == NULL
2053 || h->type != bfd_link_hash_defined)
2054 return bfd_reloc_gp_not_found;
2055
2056 gp = (h->u.def.value
2057 + h->u.def.section->output_section->vma
2058 + h->u.def.section->output_offset);
2059
2060 value -= sym_sec->output_section->vma;
2061 value -= (gp - sym_sec->output_section->vma);
2062 }
2063 break;
2064
2065 case R_V850_TDA_4_4_OFFSET:
2066 case R_V850_TDA_4_5_OFFSET:
2067 case R_V850_TDA_7_7_OFFSET:
2068 case R_V850_TDA_7_8_OFFSET:
2069 case R_V850_TDA_6_8_OFFSET:
2070 case R_V850_TDA_16_16_OFFSET:
2071 {
2072 unsigned long ep;
2073 struct bfd_link_hash_entry * h;
2074
2075 /* Get the value of __ep. */
2076 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
2077 if (h == NULL
2078 || h->type != bfd_link_hash_defined)
2079 return bfd_reloc_ep_not_found;
2080
2081 ep = (h->u.def.value
2082 + h->u.def.section->output_section->vma
2083 + h->u.def.section->output_offset);
2084
2085 value -= ep;
2086 }
2087 break;
2088
2089 case R_V850_CALLT_6_7_OFFSET:
2090 {
2091 unsigned long ctbp;
2092 struct bfd_link_hash_entry * h;
2093
2094 /* Get the value of __ctbp. */
2095 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
2096 if (h == NULL
2097 || h->type != bfd_link_hash_defined)
2098 return bfd_reloc_ctbp_not_found;
2099
2100 ctbp = (h->u.def.value
2101 + h->u.def.section->output_section->vma
2102 + h->u.def.section->output_offset);
2103 value -= ctbp;
2104 }
2105 break;
2106
2107 case R_V850_CALLT_15_16_OFFSET:
2108 case R_V850_CALLT_16_16_OFFSET:
2109 {
2110 unsigned long ctbp;
2111 struct bfd_link_hash_entry * h;
2112
2113 if (sym_sec == NULL)
2114 return bfd_reloc_undefined;
2115
2116 /* Get the value of __ctbp. */
2117 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
2118 if (h == NULL
2119 || h->type != bfd_link_hash_defined)
2120 return bfd_reloc_ctbp_not_found;
2121
2122 ctbp = (h->u.def.value
2123 + h->u.def.section->output_section->vma
2124 + h->u.def.section->output_offset);
2125
2126 value -= sym_sec->output_section->vma;
2127 value -= (ctbp - sym_sec->output_section->vma);
2128 }
2129 break;
2130
2131 case R_V850_NONE:
2132 case R_V810_NONE:
2133 case R_V850_GNU_VTINHERIT:
2134 case R_V850_GNU_VTENTRY:
2135 case R_V850_LONGCALL:
2136 case R_V850_LONGJUMP:
2137 case R_V850_ALIGN:
2138 return bfd_reloc_ok;
2139
2140 default:
2141 #ifdef DEBUG
2142 fprintf (stderr, "reloc number %d not recognised\n", r_type);
2143 #endif
2144 return bfd_reloc_notsupported;
2145 }
2146
2147 /* Perform the relocation. */
2148 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
2149 }
2150 \f
2151 /* Relocate an V850 ELF section. */
2152
2153 static bfd_boolean
2154 v850_elf_relocate_section (bfd *output_bfd,
2155 struct bfd_link_info *info,
2156 bfd *input_bfd,
2157 asection *input_section,
2158 bfd_byte *contents,
2159 Elf_Internal_Rela *relocs,
2160 Elf_Internal_Sym *local_syms,
2161 asection **local_sections)
2162 {
2163 Elf_Internal_Shdr *symtab_hdr;
2164 struct elf_link_hash_entry **sym_hashes;
2165 Elf_Internal_Rela *rel;
2166 Elf_Internal_Rela *relend;
2167
2168 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2169 sym_hashes = elf_sym_hashes (input_bfd);
2170
2171 /* Reset the list of remembered HI16S relocs to empty. */
2172 free_hi16s = previous_hi16s;
2173 previous_hi16s = NULL;
2174 hi16s_counter = 0;
2175
2176 rel = relocs;
2177 relend = relocs + input_section->reloc_count;
2178 for (; rel < relend; rel++)
2179 {
2180 unsigned int r_type;
2181 reloc_howto_type *howto;
2182 unsigned long r_symndx;
2183 Elf_Internal_Sym *sym;
2184 asection *sec;
2185 struct elf_link_hash_entry *h;
2186 bfd_vma relocation;
2187 bfd_reloc_status_type r;
2188
2189 r_symndx = ELF32_R_SYM (rel->r_info);
2190 r_type = ELF32_R_TYPE (rel->r_info);
2191
2192 if (r_type == R_V850_GNU_VTENTRY
2193 || r_type == R_V850_GNU_VTINHERIT)
2194 continue;
2195
2196 if (bfd_get_arch (input_bfd) == bfd_arch_v850_rh850)
2197 howto = v800_elf_howto_table + (r_type - R_V810_NONE);
2198 else
2199 howto = v850_elf_howto_table + r_type;
2200
2201 BFD_ASSERT (r_type == howto->type);
2202
2203 h = NULL;
2204 sym = NULL;
2205 sec = NULL;
2206 if (r_symndx < symtab_hdr->sh_info)
2207 {
2208 sym = local_syms + r_symndx;
2209 sec = local_sections[r_symndx];
2210 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2211 }
2212 else
2213 {
2214 bfd_boolean unresolved_reloc, warned, ignored;
2215
2216 /* Note - this check is delayed until now as it is possible and
2217 valid to have a file without any symbols but with relocs that
2218 can be processed. */
2219 if (sym_hashes == NULL)
2220 {
2221 info->callbacks->warning
2222 (info, "no hash table available",
2223 NULL, input_bfd, input_section, (bfd_vma) 0);
2224
2225 return FALSE;
2226 }
2227
2228 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2229 r_symndx, symtab_hdr, sym_hashes,
2230 h, sec, relocation,
2231 unresolved_reloc, warned, ignored);
2232 }
2233
2234 if (sec != NULL && discarded_section (sec))
2235 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2236 rel, 1, relend, howto, 0, contents);
2237
2238 if (info->relocatable)
2239 continue;
2240
2241 /* FIXME: We should use the addend, but the COFF relocations don't. */
2242 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
2243 input_section,
2244 contents, rel->r_offset,
2245 relocation, rel->r_addend,
2246 info, sec, h == NULL);
2247
2248 if (r != bfd_reloc_ok)
2249 {
2250 const char * name;
2251 const char * msg = NULL;
2252
2253 if (h != NULL)
2254 name = h->root.root.string;
2255 else
2256 {
2257 name = (bfd_elf_string_from_elf_section
2258 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2259 if (name == NULL || *name == '\0')
2260 name = bfd_section_name (input_bfd, sec);
2261 }
2262
2263 switch ((int) r)
2264 {
2265 case bfd_reloc_overflow:
2266 if (! ((*info->callbacks->reloc_overflow)
2267 (info, (h ? &h->root : NULL), name, howto->name,
2268 (bfd_vma) 0, input_bfd, input_section,
2269 rel->r_offset)))
2270 return FALSE;
2271 break;
2272
2273 case bfd_reloc_undefined:
2274 if (! ((*info->callbacks->undefined_symbol)
2275 (info, name, input_bfd, input_section,
2276 rel->r_offset, TRUE)))
2277 return FALSE;
2278 break;
2279
2280 case bfd_reloc_outofrange:
2281 msg = _("internal error: out of range error");
2282 goto common_error;
2283
2284 case bfd_reloc_notsupported:
2285 msg = _("internal error: unsupported relocation error");
2286 goto common_error;
2287
2288 case bfd_reloc_dangerous:
2289 msg = _("internal error: dangerous relocation");
2290 goto common_error;
2291
2292 case bfd_reloc_gp_not_found:
2293 msg = _("could not locate special linker symbol __gp");
2294 goto common_error;
2295
2296 case bfd_reloc_ep_not_found:
2297 msg = _("could not locate special linker symbol __ep");
2298 goto common_error;
2299
2300 case bfd_reloc_ctbp_not_found:
2301 msg = _("could not locate special linker symbol __ctbp");
2302 goto common_error;
2303
2304 default:
2305 msg = _("internal error: unknown error");
2306 /* fall through */
2307
2308 common_error:
2309 if (!((*info->callbacks->warning)
2310 (info, msg, name, input_bfd, input_section,
2311 rel->r_offset)))
2312 return FALSE;
2313 break;
2314 }
2315 }
2316 }
2317
2318 return TRUE;
2319 }
2320
2321 static asection *
2322 v850_elf_gc_mark_hook (asection *sec,
2323 struct bfd_link_info *info,
2324 Elf_Internal_Rela *rel,
2325 struct elf_link_hash_entry *h,
2326 Elf_Internal_Sym *sym)
2327 {
2328 if (h != NULL)
2329 switch (ELF32_R_TYPE (rel->r_info))
2330 {
2331 case R_V850_GNU_VTINHERIT:
2332 case R_V850_GNU_VTENTRY:
2333 return NULL;
2334 }
2335
2336 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2337 }
2338
2339 /* Set the right machine number and architecture. */
2340
2341 static bfd_boolean
2342 v850_elf_object_p (bfd *abfd)
2343 {
2344 enum bfd_architecture arch;
2345 unsigned long mach;
2346
2347 switch (elf_elfheader (abfd)->e_machine)
2348 {
2349 case EM_V800:
2350 arch = bfd_arch_v850_rh850;
2351 mach = (elf_elfheader (abfd)->e_flags & EF_V800_850E3)
2352 ? bfd_mach_v850e3v5 : bfd_mach_v850e2v3;
2353 break;
2354
2355 case EM_CYGNUS_V850:
2356 case EM_V850:
2357 arch = bfd_arch_v850;
2358 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
2359 {
2360 default:
2361 case E_V850_ARCH: mach = bfd_mach_v850; break;
2362 case E_V850E_ARCH: mach = bfd_mach_v850e; break;
2363 case E_V850E1_ARCH: mach = bfd_mach_v850e1; break;
2364 case E_V850E2_ARCH: mach = bfd_mach_v850e2; break;
2365 case E_V850E2V3_ARCH: mach = bfd_mach_v850e2v3; break;
2366 case E_V850E3V5_ARCH: mach = bfd_mach_v850e3v5; break;
2367 }
2368 break;
2369
2370 default:
2371 return FALSE;
2372 }
2373
2374 return bfd_default_set_arch_mach (abfd, arch, mach);
2375 }
2376
2377 /* Store the machine number in the flags field. */
2378
2379 static void
2380 v850_elf_final_write_processing (bfd *abfd,
2381 bfd_boolean linker ATTRIBUTE_UNUSED)
2382 {
2383 unsigned long val;
2384
2385 switch (bfd_get_arch (abfd))
2386 {
2387 case bfd_arch_v850_rh850:
2388 val = EF_RH850_ABI;
2389 if (bfd_get_mach (abfd) == bfd_mach_v850e3v5)
2390 val |= EF_V800_850E3;
2391 elf_elfheader (abfd)->e_flags |= val;
2392 break;
2393
2394 case bfd_arch_v850:
2395 switch (bfd_get_mach (abfd))
2396 {
2397 default:
2398 case bfd_mach_v850: val = E_V850_ARCH; break;
2399 case bfd_mach_v850e: val = E_V850E_ARCH; break;
2400 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
2401 case bfd_mach_v850e2: val = E_V850E2_ARCH; break;
2402 case bfd_mach_v850e2v3: val = E_V850E2V3_ARCH; break;
2403 case bfd_mach_v850e3v5: val = E_V850E3V5_ARCH; break;
2404 }
2405 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
2406 elf_elfheader (abfd)->e_flags |= val;
2407 break;
2408 default:
2409 break;
2410 }
2411 }
2412
2413 /* Function to keep V850 specific file flags. */
2414
2415 static bfd_boolean
2416 v850_elf_set_private_flags (bfd *abfd, flagword flags)
2417 {
2418 BFD_ASSERT (!elf_flags_init (abfd)
2419 || elf_elfheader (abfd)->e_flags == flags);
2420
2421 elf_elfheader (abfd)->e_flags = flags;
2422 elf_flags_init (abfd) = TRUE;
2423 return TRUE;
2424 }
2425
2426 /* Merge backend specific data from an object file
2427 to the output object file when linking. */
2428
2429 static bfd_boolean
2430 v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2431 {
2432 flagword out_flags;
2433 flagword in_flags;
2434
2435 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2436 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2437 return TRUE;
2438
2439 in_flags = elf_elfheader (ibfd)->e_flags;
2440 out_flags = elf_elfheader (obfd)->e_flags;
2441
2442 if (! elf_flags_init (obfd))
2443 {
2444 /* If the input is the default architecture then do not
2445 bother setting the flags for the output architecture,
2446 instead allow future merges to do this. If no future
2447 merges ever set these flags then they will retain their
2448 unitialised values, which surprise surprise, correspond
2449 to the default values. */
2450 if (bfd_get_arch_info (ibfd)->the_default)
2451 return TRUE;
2452
2453 elf_flags_init (obfd) = TRUE;
2454 elf_elfheader (obfd)->e_flags = in_flags;
2455
2456 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
2457 && bfd_get_arch_info (obfd)->the_default)
2458 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
2459
2460 return TRUE;
2461 }
2462
2463 /* Check flag compatibility. */
2464 if (in_flags == out_flags)
2465 return TRUE;
2466
2467 if (bfd_get_arch (obfd) == bfd_arch_v850_rh850)
2468 {
2469 if ((in_flags & EF_V800_850E3) != (out_flags & EF_V800_850E3))
2470 {
2471 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
2472 ibfd);
2473 elf_elfheader (obfd)->e_flags |= EF_V800_850E3;
2474 }
2475
2476 if ((in_flags & EF_RH850_DATA_ALIGN8) != (out_flags & EF_RH850_DATA_ALIGN8))
2477 {
2478 _bfd_error_handler (_("%B: Alignment mismatch with previous modules"),
2479 ibfd);
2480 elf_elfheader (obfd)->e_flags |= EF_RH850_DATA_ALIGN8;
2481 }
2482
2483 return TRUE;
2484 }
2485
2486 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
2487 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
2488 {
2489 /* Allow earlier architecture binaries to be linked with later binaries.
2490 Set the output binary to the later architecture, except for v850e1,
2491 which we set to v850e. */
2492 if ( (in_flags & EF_V850_ARCH) == E_V850E1_ARCH
2493 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
2494 return TRUE;
2495
2496 if ( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2497 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
2498 {
2499 elf_elfheader (obfd)->e_flags =
2500 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
2501 return TRUE;
2502 }
2503
2504 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2505 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH)
2506 && (out_flags & EF_V850_ARCH) == E_V850E2_ARCH)
2507 {
2508 elf_elfheader (obfd)->e_flags =
2509 ((out_flags & ~ EF_V850_ARCH) | E_V850E2_ARCH);
2510 return TRUE;
2511 }
2512
2513 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2514 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH
2515 || (in_flags & EF_V850_ARCH) == E_V850E2_ARCH)
2516 && (out_flags & EF_V850_ARCH) == E_V850E2V3_ARCH)
2517 {
2518 elf_elfheader (obfd)->e_flags =
2519 ((out_flags & ~ EF_V850_ARCH) | E_V850E2V3_ARCH);
2520 return TRUE;
2521 }
2522
2523 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2524 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH
2525 || (in_flags & EF_V850_ARCH) == E_V850E2_ARCH
2526 || (in_flags & EF_V850_ARCH) == E_V850E2V3_ARCH)
2527 && (out_flags & EF_V850_ARCH) == E_V850E3V5_ARCH)
2528 {
2529 elf_elfheader (obfd)->e_flags =
2530 ((out_flags & ~ EF_V850_ARCH) | E_V850E3V5_ARCH);
2531 return TRUE;
2532 }
2533
2534 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
2535 ibfd);
2536 }
2537
2538 return TRUE;
2539 }
2540
2541 /* Display the flags field. */
2542
2543 static bfd_boolean
2544 v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
2545 {
2546 FILE * file = (FILE *) ptr;
2547
2548 BFD_ASSERT (abfd != NULL && ptr != NULL);
2549
2550 _bfd_elf_print_private_bfd_data (abfd, ptr);
2551
2552 /* xgettext:c-format. */
2553 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
2554
2555 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
2556 {
2557 if ((elf_elfheader (abfd)->e_flags & EF_RH850_ABI) != EF_RH850_ABI)
2558 fprintf (file, _("unknown v850 architecture"));
2559 else if (elf_elfheader (abfd)->e_flags & EF_V800_850E3)
2560 fprintf (file, _("v850 E3 architecture"));
2561 else
2562 fprintf (file, _("v850 architecture"));
2563
2564 if (elf_elfheader (abfd)->e_flags & EF_RH850_DATA_ALIGN8)
2565 fprintf (file, _(", 8-byte data alignment"));
2566 }
2567 else
2568 {
2569 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
2570 {
2571 default:
2572 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
2573 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
2574 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
2575 case E_V850E2_ARCH: fprintf (file, _("v850e2 architecture")); break;
2576 case E_V850E2V3_ARCH: fprintf (file, _("v850e2v3 architecture")); break;
2577 case E_V850E3V5_ARCH: fprintf (file, _("v850e3v5 architecture")); break;
2578 }
2579 }
2580
2581 fputc ('\n', file);
2582
2583 return TRUE;
2584 }
2585
2586 /* V850 ELF uses four common sections. One is the usual one, and the
2587 others are for (small) objects in one of the special data areas:
2588 small, tiny and zero. All the objects are kept together, and then
2589 referenced via the gp register, the ep register or the r0 register
2590 respectively, which yields smaller, faster assembler code. This
2591 approach is copied from elf32-mips.c. */
2592
2593 static asection v850_elf_scom_section;
2594 static asymbol v850_elf_scom_symbol;
2595 static asymbol * v850_elf_scom_symbol_ptr;
2596 static asection v850_elf_tcom_section;
2597 static asymbol v850_elf_tcom_symbol;
2598 static asymbol * v850_elf_tcom_symbol_ptr;
2599 static asection v850_elf_zcom_section;
2600 static asymbol v850_elf_zcom_symbol;
2601 static asymbol * v850_elf_zcom_symbol_ptr;
2602
2603 /* Given a BFD section, try to locate the
2604 corresponding ELF section index. */
2605
2606 static bfd_boolean
2607 v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
2608 asection *sec,
2609 int *retval)
2610 {
2611 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2612 *retval = SHN_V850_SCOMMON;
2613 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
2614 *retval = SHN_V850_TCOMMON;
2615 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2616 *retval = SHN_V850_ZCOMMON;
2617 else
2618 return FALSE;
2619
2620 return TRUE;
2621 }
2622
2623 /* Handle the special V850 section numbers that a symbol may use. */
2624
2625 static void
2626 v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
2627 {
2628 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2629 unsigned int indx;
2630
2631 indx = elfsym->internal_elf_sym.st_shndx;
2632
2633 /* If the section index is an "ordinary" index, then it may
2634 refer to a v850 specific section created by the assembler.
2635 Check the section's type and change the index it matches.
2636
2637 FIXME: Should we alter the st_shndx field as well ? */
2638
2639 if (indx < elf_numsections (abfd))
2640 switch (elf_elfsections (abfd)[indx]->sh_type)
2641 {
2642 case SHT_V850_SCOMMON:
2643 indx = SHN_V850_SCOMMON;
2644 break;
2645
2646 case SHT_V850_TCOMMON:
2647 indx = SHN_V850_TCOMMON;
2648 break;
2649
2650 case SHT_V850_ZCOMMON:
2651 indx = SHN_V850_ZCOMMON;
2652 break;
2653
2654 default:
2655 break;
2656 }
2657
2658 switch (indx)
2659 {
2660 case SHN_V850_SCOMMON:
2661 if (v850_elf_scom_section.name == NULL)
2662 {
2663 /* Initialize the small common section. */
2664 v850_elf_scom_section.name = ".scommon";
2665 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2666 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2667 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2668 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2669 v850_elf_scom_symbol.name = ".scommon";
2670 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2671 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2672 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2673 }
2674 asym->section = & v850_elf_scom_section;
2675 asym->value = elfsym->internal_elf_sym.st_size;
2676 break;
2677
2678 case SHN_V850_TCOMMON:
2679 if (v850_elf_tcom_section.name == NULL)
2680 {
2681 /* Initialize the tcommon section. */
2682 v850_elf_tcom_section.name = ".tcommon";
2683 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2684 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2685 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2686 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2687 v850_elf_tcom_symbol.name = ".tcommon";
2688 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2689 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2690 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2691 }
2692 asym->section = & v850_elf_tcom_section;
2693 asym->value = elfsym->internal_elf_sym.st_size;
2694 break;
2695
2696 case SHN_V850_ZCOMMON:
2697 if (v850_elf_zcom_section.name == NULL)
2698 {
2699 /* Initialize the zcommon section. */
2700 v850_elf_zcom_section.name = ".zcommon";
2701 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2702 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2703 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2704 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2705 v850_elf_zcom_symbol.name = ".zcommon";
2706 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2707 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2708 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2709 }
2710 asym->section = & v850_elf_zcom_section;
2711 asym->value = elfsym->internal_elf_sym.st_size;
2712 break;
2713 }
2714 }
2715
2716 /* Hook called by the linker routine which adds symbols from an object
2717 file. We must handle the special v850 section numbers here. */
2718
2719 static bfd_boolean
2720 v850_elf_add_symbol_hook (bfd *abfd,
2721 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2722 Elf_Internal_Sym *sym,
2723 const char **namep ATTRIBUTE_UNUSED,
2724 flagword *flagsp ATTRIBUTE_UNUSED,
2725 asection **secp,
2726 bfd_vma *valp)
2727 {
2728 unsigned int indx = sym->st_shndx;
2729
2730 /* If the section index is an "ordinary" index, then it may
2731 refer to a v850 specific section created by the assembler.
2732 Check the section's type and change the index it matches.
2733
2734 FIXME: Should we alter the st_shndx field as well ? */
2735
2736 if (indx < elf_numsections (abfd))
2737 switch (elf_elfsections (abfd)[indx]->sh_type)
2738 {
2739 case SHT_V850_SCOMMON:
2740 indx = SHN_V850_SCOMMON;
2741 break;
2742
2743 case SHT_V850_TCOMMON:
2744 indx = SHN_V850_TCOMMON;
2745 break;
2746
2747 case SHT_V850_ZCOMMON:
2748 indx = SHN_V850_ZCOMMON;
2749 break;
2750
2751 default:
2752 break;
2753 }
2754
2755 switch (indx)
2756 {
2757 case SHN_V850_SCOMMON:
2758 *secp = bfd_make_section_old_way (abfd, ".scommon");
2759 (*secp)->flags |= SEC_IS_COMMON;
2760 *valp = sym->st_size;
2761 break;
2762
2763 case SHN_V850_TCOMMON:
2764 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2765 (*secp)->flags |= SEC_IS_COMMON;
2766 *valp = sym->st_size;
2767 break;
2768
2769 case SHN_V850_ZCOMMON:
2770 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2771 (*secp)->flags |= SEC_IS_COMMON;
2772 *valp = sym->st_size;
2773 break;
2774 }
2775
2776 return TRUE;
2777 }
2778
2779 static int
2780 v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2781 const char *name ATTRIBUTE_UNUSED,
2782 Elf_Internal_Sym *sym,
2783 asection *input_sec,
2784 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2785 {
2786 /* If we see a common symbol, which implies a relocatable link, then
2787 if a symbol was in a special common section in an input file, mark
2788 it as a special common in the output file. */
2789
2790 if (sym->st_shndx == SHN_COMMON)
2791 {
2792 if (strcmp (input_sec->name, ".scommon") == 0)
2793 sym->st_shndx = SHN_V850_SCOMMON;
2794 else if (strcmp (input_sec->name, ".tcommon") == 0)
2795 sym->st_shndx = SHN_V850_TCOMMON;
2796 else if (strcmp (input_sec->name, ".zcommon") == 0)
2797 sym->st_shndx = SHN_V850_ZCOMMON;
2798 }
2799
2800 /* The price we pay for using h->other unused bits as flags in the
2801 linker is cleaning up after ourselves. */
2802
2803 sym->st_other &= ~(V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA
2804 | V850_OTHER_ERROR);
2805
2806 return 1;
2807 }
2808
2809 static bfd_boolean
2810 v850_elf_section_from_shdr (bfd *abfd,
2811 Elf_Internal_Shdr *hdr,
2812 const char *name,
2813 int shindex)
2814 {
2815 /* There ought to be a place to keep ELF backend specific flags, but
2816 at the moment there isn't one. We just keep track of the
2817 sections by their name, instead. */
2818
2819 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2820 return FALSE;
2821
2822 switch (hdr->sh_type)
2823 {
2824 case SHT_V850_SCOMMON:
2825 case SHT_V850_TCOMMON:
2826 case SHT_V850_ZCOMMON:
2827 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2828 (bfd_get_section_flags (abfd,
2829 hdr->bfd_section)
2830 | SEC_IS_COMMON)))
2831 return FALSE;
2832 }
2833
2834 return TRUE;
2835 }
2836
2837 /* Set the correct type for a V850 ELF section. We do this
2838 by the section name, which is a hack, but ought to work. */
2839
2840 static bfd_boolean
2841 v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2842 Elf_Internal_Shdr *hdr,
2843 asection *sec)
2844 {
2845 const char * name;
2846
2847 name = bfd_get_section_name (abfd, sec);
2848
2849 if (strcmp (name, ".scommon") == 0)
2850 hdr->sh_type = SHT_V850_SCOMMON;
2851 else if (strcmp (name, ".tcommon") == 0)
2852 hdr->sh_type = SHT_V850_TCOMMON;
2853 else if (strcmp (name, ".zcommon") == 0)
2854 hdr->sh_type = SHT_V850_ZCOMMON;
2855
2856 return TRUE;
2857 }
2858
2859 /* Delete some bytes from a section while relaxing. */
2860
2861 static bfd_boolean
2862 v850_elf_relax_delete_bytes (bfd *abfd,
2863 asection *sec,
2864 bfd_vma addr,
2865 bfd_vma toaddr,
2866 int count)
2867 {
2868 Elf_Internal_Shdr *symtab_hdr;
2869 Elf32_External_Sym *extsyms;
2870 Elf32_External_Sym *esym;
2871 Elf32_External_Sym *esymend;
2872 int sym_index;
2873 unsigned int sec_shndx;
2874 bfd_byte *contents;
2875 Elf_Internal_Rela *irel;
2876 Elf_Internal_Rela *irelend;
2877 struct elf_link_hash_entry *sym_hash;
2878 Elf_Internal_Shdr *shndx_hdr;
2879 Elf_External_Sym_Shndx *shndx;
2880
2881 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2882 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2883
2884 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2885
2886 contents = elf_section_data (sec)->this_hdr.contents;
2887
2888 /* The deletion must stop at the next ALIGN reloc for an alignment
2889 power larger than the number of bytes we are deleting. */
2890
2891 /* Actually delete the bytes. */
2892 #if (DEBUG_RELAX & 2)
2893 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2894 sec->name, addr, toaddr, count );
2895 #endif
2896 memmove (contents + addr, contents + addr + count,
2897 toaddr - addr - count);
2898 memset (contents + toaddr-count, 0, count);
2899
2900 /* Adjust all the relocs. */
2901 irel = elf_section_data (sec)->relocs;
2902 irelend = irel + sec->reloc_count;
2903 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2904 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2905
2906 for (; irel < irelend; irel++)
2907 {
2908 bfd_vma raddr, paddr, symval;
2909 Elf_Internal_Sym isym;
2910
2911 /* Get the new reloc address. */
2912 raddr = irel->r_offset;
2913 if ((raddr >= (addr + count) && raddr < toaddr))
2914 irel->r_offset -= count;
2915
2916 if (raddr >= addr && raddr < addr + count)
2917 {
2918 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2919 (int) R_V850_NONE);
2920 continue;
2921 }
2922
2923 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2924 continue;
2925
2926 bfd_elf32_swap_symbol_in (abfd,
2927 extsyms + ELF32_R_SYM (irel->r_info),
2928 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2929 & isym);
2930
2931 if (isym.st_shndx != sec_shndx)
2932 continue;
2933
2934 /* Get the value of the symbol referred to by the reloc. */
2935 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2936 {
2937 symval = isym.st_value;
2938 #if (DEBUG_RELAX & 2)
2939 {
2940 char * name = bfd_elf_string_from_elf_section
2941 (abfd, symtab_hdr->sh_link, isym.st_name);
2942 fprintf (stderr,
2943 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2944 sec->name, name, isym.st_name,
2945 sec->output_section->vma, sec->output_offset,
2946 isym.st_value, irel->r_addend);
2947 }
2948 #endif
2949 }
2950 else
2951 {
2952 unsigned long indx;
2953 struct elf_link_hash_entry * h;
2954
2955 /* An external symbol. */
2956 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2957
2958 h = elf_sym_hashes (abfd) [indx];
2959 BFD_ASSERT (h != NULL);
2960
2961 symval = h->root.u.def.value;
2962 #if (DEBUG_RELAX & 2)
2963 fprintf (stderr,
2964 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2965 sec->name, h->root.root.string, h->root.u.def.value,
2966 sec->output_section->vma, sec->output_offset, irel->r_addend);
2967 #endif
2968 }
2969
2970 paddr = symval + irel->r_addend;
2971
2972 if ( (symval >= addr + count && symval < toaddr)
2973 && (paddr < addr + count || paddr >= toaddr))
2974 irel->r_addend += count;
2975 else if ( (symval < addr + count || symval >= toaddr)
2976 && (paddr >= addr + count && paddr < toaddr))
2977 irel->r_addend -= count;
2978 }
2979
2980 /* Adjust the local symbols defined in this section. */
2981 esym = extsyms;
2982 esymend = esym + symtab_hdr->sh_info;
2983
2984 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2985 {
2986 Elf_Internal_Sym isym;
2987
2988 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2989
2990 if (isym.st_shndx == sec_shndx
2991 && isym.st_value >= addr + count
2992 && isym.st_value < toaddr)
2993 {
2994 isym.st_value -= count;
2995
2996 if (isym.st_value + isym.st_size >= toaddr)
2997 isym.st_size += count;
2998
2999 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3000 }
3001 else if (isym.st_shndx == sec_shndx
3002 && isym.st_value < addr + count)
3003 {
3004 if (isym.st_value+isym.st_size >= addr + count
3005 && isym.st_value+isym.st_size < toaddr)
3006 isym.st_size -= count;
3007
3008 if (isym.st_value >= addr
3009 && isym.st_value < addr + count)
3010 isym.st_value = addr;
3011
3012 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3013 }
3014 }
3015
3016 /* Now adjust the global symbols defined in this section. */
3017 esym = extsyms + symtab_hdr->sh_info;
3018 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
3019
3020 for (sym_index = 0; esym < esymend; esym ++, sym_index ++)
3021 {
3022 Elf_Internal_Sym isym;
3023
3024 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
3025 sym_hash = elf_sym_hashes (abfd) [sym_index];
3026
3027 if (isym.st_shndx == sec_shndx
3028 && ((sym_hash)->root.type == bfd_link_hash_defined
3029 || (sym_hash)->root.type == bfd_link_hash_defweak)
3030 && (sym_hash)->root.u.def.section == sec
3031 && (sym_hash)->root.u.def.value >= addr + count
3032 && (sym_hash)->root.u.def.value < toaddr)
3033 {
3034 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
3035 {
3036 isym.st_size += count;
3037 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3038 }
3039
3040 (sym_hash)->root.u.def.value -= count;
3041 }
3042 else if (isym.st_shndx == sec_shndx
3043 && ((sym_hash)->root.type == bfd_link_hash_defined
3044 || (sym_hash)->root.type == bfd_link_hash_defweak)
3045 && (sym_hash)->root.u.def.section == sec
3046 && (sym_hash)->root.u.def.value < addr + count)
3047 {
3048 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
3049 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
3050 isym.st_size -= count;
3051
3052 if ((sym_hash)->root.u.def.value >= addr
3053 && (sym_hash)->root.u.def.value < addr + count)
3054 (sym_hash)->root.u.def.value = addr;
3055
3056 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3057 }
3058
3059 if (shndx)
3060 ++ shndx;
3061 }
3062
3063 return TRUE;
3064 }
3065
3066 #define NOP_OPCODE (0x0000)
3067 #define MOVHI 0x0640 /* 4byte. */
3068 #define MOVHI_MASK 0x07e0
3069 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte. */
3070 #define MOVHI_R2(insn) ((insn) >> 11)
3071 #define MOVEA 0x0620 /* 2byte. */
3072 #define MOVEA_MASK 0x07e0
3073 #define MOVEA_R1(insn) ((insn) & 0x1f)
3074 #define MOVEA_R2(insn) ((insn) >> 11)
3075 #define JARL_4 0x00040780 /* 4byte. */
3076 #define JARL_4_MASK 0xFFFF07FF
3077 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
3078 #define ADD_I 0x0240 /* 2byte. */
3079 #define ADD_I_MASK 0x07e0
3080 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte. */
3081 #define ADD_R2(insn) ((insn) >> 11)
3082 #define JMP_R 0x0060 /* 2byte. */
3083 #define JMP_R_MASK 0xFFE0
3084 #define JMP_R1(insn) ((insn) & 0x1f)
3085
3086 static bfd_boolean
3087 v850_elf_relax_section (bfd *abfd,
3088 asection *sec,
3089 struct bfd_link_info *link_info,
3090 bfd_boolean *again)
3091 {
3092 Elf_Internal_Shdr *symtab_hdr;
3093 Elf_Internal_Rela *internal_relocs;
3094 Elf_Internal_Rela *irel;
3095 Elf_Internal_Rela *irelend;
3096 Elf_Internal_Rela *irelalign = NULL;
3097 Elf_Internal_Sym *isymbuf = NULL;
3098 bfd_byte *contents = NULL;
3099 bfd_vma addr = 0;
3100 bfd_vma toaddr;
3101 int align_pad_size = 0;
3102 bfd_boolean result = TRUE;
3103
3104 *again = FALSE;
3105
3106 if (link_info->relocatable
3107 || (sec->flags & SEC_RELOC) == 0
3108 || sec->reloc_count == 0)
3109 return TRUE;
3110
3111 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
3112
3113 internal_relocs = (_bfd_elf_link_read_relocs
3114 (abfd, sec, NULL, NULL, link_info->keep_memory));
3115 if (internal_relocs == NULL)
3116 goto error_return;
3117
3118 irelend = internal_relocs + sec->reloc_count;
3119
3120 while (addr < sec->size)
3121 {
3122 toaddr = sec->size;
3123
3124 for (irel = internal_relocs; irel < irelend; irel ++)
3125 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3126 && irel->r_offset > addr
3127 && irel->r_offset < toaddr)
3128 toaddr = irel->r_offset;
3129
3130 #ifdef DEBUG_RELAX
3131 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
3132 addr, toaddr, align_pad_size);
3133 #endif
3134 if (irelalign)
3135 {
3136 bfd_vma alignto;
3137 bfd_vma alignmoveto;
3138
3139 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
3140 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
3141
3142 if (alignmoveto < alignto)
3143 {
3144 bfd_vma i;
3145
3146 align_pad_size = alignto - alignmoveto;
3147 #ifdef DEBUG_RELAX
3148 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
3149 alignmoveto, toaddr, align_pad_size);
3150 #endif
3151 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
3152 toaddr, align_pad_size))
3153 goto error_return;
3154
3155 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
3156 (i + 1) < toaddr; i += 2)
3157 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
3158
3159 addr = alignmoveto;
3160 }
3161 else
3162 align_pad_size = 0;
3163 }
3164
3165 for (irel = internal_relocs; irel < irelend; irel++)
3166 {
3167 bfd_vma laddr;
3168 bfd_vma addend;
3169 bfd_vma symval;
3170 int insn[5];
3171 int no_match = -1;
3172 Elf_Internal_Rela *hi_irelfn;
3173 Elf_Internal_Rela *lo_irelfn;
3174 Elf_Internal_Rela *irelcall;
3175 bfd_signed_vma foff;
3176 unsigned int r_type;
3177
3178 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
3179 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
3180 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
3181 continue;
3182
3183 #ifdef DEBUG_RELAX
3184 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
3185 irel->r_info,
3186 irel->r_offset,
3187 irel->r_addend );
3188 #endif
3189
3190 /* Get the section contents. */
3191 if (contents == NULL)
3192 {
3193 if (elf_section_data (sec)->this_hdr.contents != NULL)
3194 contents = elf_section_data (sec)->this_hdr.contents;
3195 else
3196 {
3197 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3198 goto error_return;
3199 }
3200 }
3201
3202 /* Read this BFD's local symbols if we haven't done so already. */
3203 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
3204 {
3205 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3206 if (isymbuf == NULL)
3207 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
3208 symtab_hdr->sh_info, 0,
3209 NULL, NULL, NULL);
3210 if (isymbuf == NULL)
3211 goto error_return;
3212 }
3213
3214 laddr = irel->r_offset;
3215
3216 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
3217 {
3218 /* Check code for -mlong-calls output. */
3219 if (laddr + 16 <= (bfd_vma) sec->size)
3220 {
3221 insn[0] = bfd_get_16 (abfd, contents + laddr);
3222 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
3223 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
3224 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
3225 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
3226
3227 if ((insn[0] & MOVHI_MASK) != MOVHI
3228 || MOVHI_R1 (insn[0]) != 0)
3229 no_match = 0;
3230
3231 if (no_match < 0
3232 && ((insn[1] & MOVEA_MASK) != MOVEA
3233 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
3234 no_match = 1;
3235
3236 if (no_match < 0
3237 && (insn[2] & JARL_4_MASK) != JARL_4)
3238 no_match = 2;
3239
3240 if (no_match < 0
3241 && ((insn[3] & ADD_I_MASK) != ADD_I
3242 || ADD_I5 (insn[3]) != 4
3243 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
3244 no_match = 3;
3245
3246 if (no_match < 0
3247 && ((insn[4] & JMP_R_MASK) != JMP_R
3248 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
3249 no_match = 4;
3250 }
3251 else
3252 {
3253 ((*_bfd_error_handler)
3254 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
3255 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
3256
3257 continue;
3258 }
3259
3260 if (no_match >= 0)
3261 {
3262 ((*_bfd_error_handler)
3263 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
3264 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
3265
3266 continue;
3267 }
3268
3269 /* Get the reloc for the address from which the register is
3270 being loaded. This reloc will tell us which function is
3271 actually being called. */
3272
3273 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
3274 {
3275 r_type = ELF32_R_TYPE (hi_irelfn->r_info);
3276
3277 if (hi_irelfn->r_offset == laddr + 2
3278 && (r_type == (int) R_V850_HI16_S || r_type == (int) R_V810_WHI1))
3279 break;
3280 }
3281
3282 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
3283 {
3284 r_type = ELF32_R_TYPE (lo_irelfn->r_info);
3285
3286 if (lo_irelfn->r_offset == laddr + 6
3287 && (r_type == (int) R_V850_LO16 || r_type == (int) R_V810_WLO))
3288 break;
3289 }
3290
3291 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
3292 {
3293 r_type = ELF32_R_TYPE (irelcall->r_info);
3294
3295 if (irelcall->r_offset == laddr + 8
3296 && (r_type == (int) R_V850_22_PCREL || r_type == (int) R_V850_PCR22))
3297 break;
3298 }
3299
3300 if ( hi_irelfn == irelend
3301 || lo_irelfn == irelend
3302 || irelcall == irelend)
3303 {
3304 ((*_bfd_error_handler)
3305 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
3306 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
3307
3308 continue;
3309 }
3310
3311 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
3312 {
3313 Elf_Internal_Sym * isym;
3314
3315 /* A local symbol. */
3316 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
3317
3318 symval = isym->st_value;
3319 }
3320 else
3321 {
3322 unsigned long indx;
3323 struct elf_link_hash_entry * h;
3324
3325 /* An external symbol. */
3326 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
3327 h = elf_sym_hashes (abfd)[indx];
3328 BFD_ASSERT (h != NULL);
3329
3330 if ( h->root.type != bfd_link_hash_defined
3331 && h->root.type != bfd_link_hash_defweak)
3332 /* This appears to be a reference to an undefined
3333 symbol. Just ignore it--it will be caught by the
3334 regular reloc processing. */
3335 continue;
3336
3337 symval = h->root.u.def.value;
3338 }
3339
3340 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
3341 {
3342 ((*_bfd_error_handler)
3343 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
3344 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
3345
3346 continue;
3347 }
3348
3349 /* Get the value of the symbol referred to by the reloc. */
3350 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3351 {
3352 Elf_Internal_Sym *isym;
3353 asection *sym_sec;
3354
3355 /* A local symbol. */
3356 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
3357
3358 if (isym->st_shndx == SHN_UNDEF)
3359 sym_sec = bfd_und_section_ptr;
3360 else if (isym->st_shndx == SHN_ABS)
3361 sym_sec = bfd_abs_section_ptr;
3362 else if (isym->st_shndx == SHN_COMMON)
3363 sym_sec = bfd_com_section_ptr;
3364 else
3365 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3366 symval = (isym->st_value
3367 + sym_sec->output_section->vma
3368 + sym_sec->output_offset);
3369 }
3370 else
3371 {
3372 unsigned long indx;
3373 struct elf_link_hash_entry *h;
3374
3375 /* An external symbol. */
3376 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
3377 h = elf_sym_hashes (abfd)[indx];
3378 BFD_ASSERT (h != NULL);
3379
3380 if ( h->root.type != bfd_link_hash_defined
3381 && h->root.type != bfd_link_hash_defweak)
3382 /* This appears to be a reference to an undefined
3383 symbol. Just ignore it--it will be caught by the
3384 regular reloc processing. */
3385 continue;
3386
3387 symval = (h->root.u.def.value
3388 + h->root.u.def.section->output_section->vma
3389 + h->root.u.def.section->output_offset);
3390 }
3391
3392 addend = irel->r_addend;
3393
3394 foff = (symval + addend
3395 - (irel->r_offset
3396 + sec->output_section->vma
3397 + sec->output_offset
3398 + 4));
3399 #ifdef DEBUG_RELAX
3400 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3401 irel->r_offset,
3402 (irel->r_offset
3403 + sec->output_section->vma
3404 + sec->output_offset),
3405 symval, addend, foff);
3406 #endif
3407
3408 if (foff < -0x100000 || foff >= 0x100000)
3409 /* After all that work, we can't shorten this function call. */
3410 continue;
3411
3412 /* For simplicity of coding, we are going to modify the section
3413 contents, the section relocs, and the BFD symbol table. We
3414 must tell the rest of the code not to free up this
3415 information. It would be possible to instead create a table
3416 of changes which have to be made, as is done in coff-mips.c;
3417 that would be more work, but would require less memory when
3418 the linker is run. */
3419 elf_section_data (sec)->relocs = internal_relocs;
3420 elf_section_data (sec)->this_hdr.contents = contents;
3421 symtab_hdr->contents = (bfd_byte *) isymbuf;
3422
3423 /* Replace the long call with a jarl. */
3424 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3425 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_PCR22);
3426 else
3427 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
3428
3429 addend = 0;
3430
3431 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3432 /* If this needs to be changed because of future relaxing,
3433 it will be handled here like other internal IND12W
3434 relocs. */
3435 bfd_put_32 (abfd,
3436 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
3437 contents + irel->r_offset);
3438 else
3439 /* We can't fully resolve this yet, because the external
3440 symbol value may be changed by future relaxing.
3441 We let the final link phase handle it. */
3442 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
3443 contents + irel->r_offset);
3444
3445 hi_irelfn->r_info =
3446 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3447 lo_irelfn->r_info =
3448 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3449 irelcall->r_info =
3450 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
3451
3452 if (! v850_elf_relax_delete_bytes (abfd, sec,
3453 irel->r_offset + 4, toaddr, 12))
3454 goto error_return;
3455
3456 align_pad_size += 12;
3457 }
3458 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
3459 {
3460 /* Check code for -mlong-jumps output. */
3461 if (laddr + 10 <= (bfd_vma) sec->size)
3462 {
3463 insn[0] = bfd_get_16 (abfd, contents + laddr);
3464 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
3465 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
3466
3467 if ((insn[0] & MOVHI_MASK) != MOVHI
3468 || MOVHI_R1 (insn[0]) != 0)
3469 no_match = 0;
3470
3471 if (no_match < 0
3472 && ((insn[1] & MOVEA_MASK) != MOVEA
3473 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
3474 no_match = 1;
3475
3476 if (no_match < 0
3477 && ((insn[2] & JMP_R_MASK) != JMP_R
3478 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
3479 no_match = 4;
3480 }
3481 else
3482 {
3483 ((*_bfd_error_handler)
3484 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
3485 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
3486
3487 continue;
3488 }
3489
3490 if (no_match >= 0)
3491 {
3492 ((*_bfd_error_handler)
3493 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
3494 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
3495
3496 continue;
3497 }
3498
3499 /* Get the reloc for the address from which the register is
3500 being loaded. This reloc will tell us which function is
3501 actually being called. */
3502 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
3503 {
3504 r_type = ELF32_R_TYPE (hi_irelfn->r_info);
3505
3506 if (hi_irelfn->r_offset == laddr + 2
3507 && ((r_type == (int) R_V850_HI16_S) || r_type == (int) R_V810_WHI1))
3508 break;
3509 }
3510
3511 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
3512 {
3513 r_type = ELF32_R_TYPE (lo_irelfn->r_info);
3514
3515 if (lo_irelfn->r_offset == laddr + 6
3516 && (r_type == (int) R_V850_LO16 || r_type == (int) R_V810_WLO))
3517 break;
3518 }
3519
3520 if ( hi_irelfn == irelend
3521 || lo_irelfn == irelend)
3522 {
3523 ((*_bfd_error_handler)
3524 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
3525 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
3526
3527 continue;
3528 }
3529
3530 /* Get the value of the symbol referred to by the reloc. */
3531 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3532 {
3533 Elf_Internal_Sym * isym;
3534 asection * sym_sec;
3535
3536 /* A local symbol. */
3537 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
3538
3539 if (isym->st_shndx == SHN_UNDEF)
3540 sym_sec = bfd_und_section_ptr;
3541 else if (isym->st_shndx == SHN_ABS)
3542 sym_sec = bfd_abs_section_ptr;
3543 else if (isym->st_shndx == SHN_COMMON)
3544 sym_sec = bfd_com_section_ptr;
3545 else
3546 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3547 symval = (isym->st_value
3548 + sym_sec->output_section->vma
3549 + sym_sec->output_offset);
3550 #ifdef DEBUG_RELAX
3551 {
3552 char * name = bfd_elf_string_from_elf_section
3553 (abfd, symtab_hdr->sh_link, isym->st_name);
3554
3555 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
3556 sym_sec->name, name, isym->st_name,
3557 sym_sec->output_section->vma,
3558 sym_sec->output_offset,
3559 isym->st_value, irel->r_addend);
3560 }
3561 #endif
3562 }
3563 else
3564 {
3565 unsigned long indx;
3566 struct elf_link_hash_entry * h;
3567
3568 /* An external symbol. */
3569 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
3570 h = elf_sym_hashes (abfd)[indx];
3571 BFD_ASSERT (h != NULL);
3572
3573 if ( h->root.type != bfd_link_hash_defined
3574 && h->root.type != bfd_link_hash_defweak)
3575 /* This appears to be a reference to an undefined
3576 symbol. Just ignore it--it will be caught by the
3577 regular reloc processing. */
3578 continue;
3579
3580 symval = (h->root.u.def.value
3581 + h->root.u.def.section->output_section->vma
3582 + h->root.u.def.section->output_offset);
3583 #ifdef DEBUG_RELAX
3584 fprintf (stderr,
3585 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
3586 sec->name, h->root.root.string, h->root.u.def.value,
3587 sec->output_section->vma, sec->output_offset, irel->r_addend);
3588 #endif
3589 }
3590
3591 addend = irel->r_addend;
3592
3593 foff = (symval + addend
3594 - (irel->r_offset
3595 + sec->output_section->vma
3596 + sec->output_offset
3597 + 4));
3598 #ifdef DEBUG_RELAX
3599 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3600 irel->r_offset,
3601 (irel->r_offset
3602 + sec->output_section->vma
3603 + sec->output_offset),
3604 symval, addend, foff);
3605 #endif
3606 if (foff < -0x100000 || foff >= 0x100000)
3607 /* After all that work, we can't shorten this function call. */
3608 continue;
3609
3610 /* For simplicity of coding, we are going to modify the section
3611 contents, the section relocs, and the BFD symbol table. We
3612 must tell the rest of the code not to free up this
3613 information. It would be possible to instead create a table
3614 of changes which have to be made, as is done in coff-mips.c;
3615 that would be more work, but would require less memory when
3616 the linker is run. */
3617 elf_section_data (sec)->relocs = internal_relocs;
3618 elf_section_data (sec)->this_hdr.contents = contents;
3619 symtab_hdr->contents = (bfd_byte *) isymbuf;
3620
3621 if (foff < -0x100 || foff >= 0x100)
3622 {
3623 /* Replace the long jump with a jr. */
3624
3625 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3626 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_PCR22);
3627 else
3628 irel->r_info =
3629 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3630
3631 irel->r_addend = addend;
3632 addend = 0;
3633
3634 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3635 /* If this needs to be changed because of future relaxing,
3636 it will be handled here like other internal IND12W
3637 relocs. */
3638 bfd_put_32 (abfd,
3639 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3640 contents + irel->r_offset);
3641 else
3642 /* We can't fully resolve this yet, because the external
3643 symbol value may be changed by future relaxing.
3644 We let the final link phase handle it. */
3645 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3646
3647 hi_irelfn->r_info =
3648 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3649 lo_irelfn->r_info =
3650 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3651 if (!v850_elf_relax_delete_bytes (abfd, sec,
3652 irel->r_offset + 4, toaddr, 6))
3653 goto error_return;
3654
3655 align_pad_size += 6;
3656 }
3657 else
3658 {
3659 /* Replace the long jump with a br. */
3660
3661 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3662 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_PC9);
3663 else
3664 irel->r_info =
3665 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3666
3667 irel->r_addend = addend;
3668 addend = 0;
3669
3670 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3671 /* If this needs to be changed because of future relaxing,
3672 it will be handled here like other internal IND12W
3673 relocs. */
3674 bfd_put_16 (abfd,
3675 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3676 contents + irel->r_offset);
3677 else
3678 /* We can't fully resolve this yet, because the external
3679 symbol value may be changed by future relaxing.
3680 We let the final link phase handle it. */
3681 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3682
3683 hi_irelfn->r_info =
3684 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3685 lo_irelfn->r_info =
3686 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3687 if (!v850_elf_relax_delete_bytes (abfd, sec,
3688 irel->r_offset + 2, toaddr, 8))
3689 goto error_return;
3690
3691 align_pad_size += 8;
3692 }
3693 }
3694 }
3695
3696 irelalign = NULL;
3697 for (irel = internal_relocs; irel < irelend; irel++)
3698 {
3699 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3700 && irel->r_offset == toaddr)
3701 {
3702 irel->r_offset -= align_pad_size;
3703
3704 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3705 irelalign = irel;
3706 }
3707 }
3708
3709 addr = toaddr;
3710 }
3711
3712 if (!irelalign)
3713 {
3714 #ifdef DEBUG_RELAX
3715 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3716 align_pad_size,
3717 sec->size,
3718 sec->size - align_pad_size);
3719 #endif
3720 sec->size -= align_pad_size;
3721 }
3722
3723 finish:
3724 if (internal_relocs != NULL
3725 && elf_section_data (sec)->relocs != internal_relocs)
3726 free (internal_relocs);
3727
3728 if (contents != NULL
3729 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3730 free (contents);
3731
3732 if (isymbuf != NULL
3733 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3734 free (isymbuf);
3735
3736 return result;
3737
3738 error_return:
3739 result = FALSE;
3740 goto finish;
3741 }
3742
3743 static const struct bfd_elf_special_section v850_elf_special_sections[] =
3744 {
3745 { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) },
3746 { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3747 + SHF_EXECINSTR) },
3748 { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3749 + SHF_V850_GPREL) },
3750 { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3751 + SHF_V850_R0REL) },
3752 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3753 + SHF_V850_GPREL) },
3754 { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3755 + SHF_V850_GPREL) },
3756 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3757 + SHF_V850_GPREL) },
3758 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3759 + SHF_V850_EPREL) },
3760 { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3761 + SHF_V850_R0REL) },
3762 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3763 + SHF_V850_EPREL) },
3764 { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3765 + SHF_V850_R0REL) },
3766 { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3767 + SHF_V850_R0REL) },
3768 { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3769 + SHF_V850_R0REL) },
3770 { NULL, 0, 0, 0, 0 }
3771 };
3772 \f
3773 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3774 #define TARGET_LITTLE_NAME "elf32-v850"
3775 #define ELF_ARCH bfd_arch_v850
3776 #define ELF_MACHINE_CODE EM_V850
3777 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3778 #define ELF_MAXPAGESIZE 0x1000
3779
3780 #define elf_info_to_howto v850_elf_info_to_howto_rela
3781 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3782
3783 #define elf_backend_check_relocs v850_elf_check_relocs
3784 #define elf_backend_relocate_section v850_elf_relocate_section
3785 #define elf_backend_object_p v850_elf_object_p
3786 #define elf_backend_final_write_processing v850_elf_final_write_processing
3787 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3788 #define elf_backend_symbol_processing v850_elf_symbol_processing
3789 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3790 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3791 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3792 #define elf_backend_fake_sections v850_elf_fake_sections
3793 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3794 #define elf_backend_special_sections v850_elf_special_sections
3795
3796 #define elf_backend_can_gc_sections 1
3797 #define elf_backend_rela_normal 1
3798
3799 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3800 #define bfd_elf32_bfd_is_target_special_symbol v850_elf_is_target_special_symbol
3801
3802 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3803 #define bfd_elf32_bfd_reloc_name_lookup v850_elf_reloc_name_lookup
3804 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3805 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3806 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3807 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3808
3809 #define elf_symbol_leading_char '_'
3810
3811 #undef elf32_bed
3812 #define elf32_bed elf32_v850_bed
3813
3814 #include "elf32-target.h"
3815
3816 /* Map BFD reloc types to V800 ELF reloc types. */
3817
3818 static const struct v850_elf_reloc_map v800_elf_reloc_map[] =
3819 {
3820 { BFD_RELOC_NONE, R_V810_NONE },
3821 { BFD_RELOC_8, R_V810_BYTE },
3822 { BFD_RELOC_16, R_V810_HWORD },
3823 { BFD_RELOC_32, R_V810_WORD },
3824 { BFD_RELOC_LO16, R_V810_WLO },
3825 { BFD_RELOC_HI16, R_V810_WHI },
3826 { BFD_RELOC_HI16_S, R_V810_WHI1 },
3827 { BFD_RELOC_V850_32_PCREL, R_V850_PC32 },
3828 { BFD_RELOC_V850_22_PCREL, R_V850_PCR22 },
3829 { BFD_RELOC_V850_17_PCREL, R_V850_PC17 },
3830 { BFD_RELOC_V850_16_PCREL, R_V850_PC16U },
3831 { BFD_RELOC_V850_9_PCREL, R_V850_PC9 },
3832 { BFD_RELOC_V850_LO16_S1, R_V810_WLO_1 }, /* Or R_V850_HWLO or R_V850_HWLO_1. */
3833 { BFD_RELOC_V850_23, R_V850_WLO23 },
3834 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_BLO },
3835 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V810_HWORD },
3836 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V810_HWORD },
3837 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V810_HWORD },
3838 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V810_GPWLO_1 }
3839 };
3840
3841 /* Map a bfd relocation into the appropriate howto structure. */
3842
3843 static reloc_howto_type *
3844 v800_elf_reloc_type_lookup (bfd * abfd, bfd_reloc_code_real_type code)
3845 {
3846 unsigned int i;
3847
3848 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3849
3850 for (i = ARRAY_SIZE (v800_elf_reloc_map); i --;)
3851 if (v800_elf_reloc_map[i].bfd_reloc_val == code)
3852 {
3853 unsigned int elf_reloc_val = v800_elf_reloc_map[i].elf_reloc_val;
3854 unsigned int idx = elf_reloc_val - R_V810_NONE;
3855
3856 BFD_ASSERT (v800_elf_howto_table[idx].type == elf_reloc_val);
3857
3858 return v800_elf_howto_table + idx;
3859 }
3860
3861 #ifdef DEBUG
3862 fprintf (stderr, "failed to find v800 equiv of bfd reloc code %d\n", code);
3863 #endif
3864 return NULL;
3865 }
3866
3867 static reloc_howto_type *
3868 v800_elf_reloc_name_lookup (bfd * abfd, const char * r_name)
3869 {
3870 unsigned int i;
3871
3872 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3873
3874 for (i = ARRAY_SIZE (v800_elf_howto_table); i--;)
3875 if (v800_elf_howto_table[i].name != NULL
3876 && strcasecmp (v800_elf_howto_table[i].name, r_name) == 0)
3877 return v800_elf_howto_table + i;
3878
3879 return NULL;
3880 }
3881
3882
3883 /* Set the howto pointer in CACHE_PTR for a V800 ELF reloc. */
3884
3885 static void
3886 v800_elf_info_to_howto (bfd * abfd,
3887 arelent * cache_ptr,
3888 Elf_Internal_Rela * dst)
3889 {
3890 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
3891
3892 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3893
3894 BFD_ASSERT (r_type < (unsigned int) R_V800_max);
3895
3896 if (r_type == R_V800_NONE)
3897 r_type = R_V810_NONE;
3898
3899 BFD_ASSERT (r_type >= (unsigned int) R_V810_NONE);
3900 r_type -= R_V810_NONE;
3901 BFD_ASSERT (r_type < ARRAY_SIZE (v800_elf_howto_table));
3902
3903 cache_ptr->howto = v800_elf_howto_table + r_type;
3904 }
3905 \f
3906
3907 #undef TARGET_LITTLE_SYM
3908 #define TARGET_LITTLE_SYM bfd_elf32_v850_rh850_vec
3909 #undef TARGET_LITTLE_NAME
3910 #define TARGET_LITTLE_NAME "elf32-v850-rh850"
3911 #undef ELF_ARCH
3912 #define ELF_ARCH bfd_arch_v850_rh850
3913 #undef ELF_MACHINE_CODE
3914 #define ELF_MACHINE_CODE EM_V800
3915 #undef ELF_MACHINE_ALT1
3916
3917 #undef elf32_bed
3918 #define elf32_bed elf32_v850_rh850_bed
3919
3920 #undef elf_info_to_howto
3921 #define elf_info_to_howto v800_elf_info_to_howto
3922 #undef elf_info_to_howto_rel
3923 #define elf_info_to_howto_rel NULL
3924 #undef bfd_elf32_bfd_reloc_type_lookup
3925 #define bfd_elf32_bfd_reloc_type_lookup v800_elf_reloc_type_lookup
3926 #undef bfd_elf32_bfd_reloc_name_lookup
3927 #define bfd_elf32_bfd_reloc_name_lookup v800_elf_reloc_name_lookup
3928
3929 #include "elf32-target.h"
GDB Binutils - Deliverables
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