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[deliverable/binutils-gdb.git] / bfd / elf32-v850.c
1 /* V850-specific support for 32-bit ELF
2 Copyright (C) 1996-2015 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 if (r_type >= (unsigned int) R_V850_max)
1900 {
1901 _bfd_error_handler (_("%A: invalid V850 reloc number: %d"), abfd, r_type);
1902 r_type = 0;
1903 }
1904 cache_ptr->howto = &v850_elf_howto_table[r_type];
1905 }
1906
1907 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
1908
1909 static void
1910 v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
1911 arelent * cache_ptr,
1912 Elf_Internal_Rela *dst)
1913 {
1914 unsigned int r_type;
1915
1916 r_type = ELF32_R_TYPE (dst->r_info);
1917 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1918 cache_ptr->howto = &v850_elf_howto_table[r_type];
1919 }
1920 \f
1921 static bfd_boolean
1922 v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
1923 {
1924 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1925 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1926 }
1927
1928 static bfd_boolean
1929 v850_elf_is_target_special_symbol (bfd *abfd, asymbol *sym)
1930 {
1931 return v850_elf_is_local_label_name (abfd, sym->name);
1932 }
1933 \f
1934 /* We overload some of the bfd_reloc error codes for own purposes. */
1935 #define bfd_reloc_gp_not_found bfd_reloc_other
1936 #define bfd_reloc_ep_not_found bfd_reloc_continue
1937 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1938
1939 /* Perform a relocation as part of a final link. */
1940
1941 static bfd_reloc_status_type
1942 v850_elf_final_link_relocate (reloc_howto_type *howto,
1943 bfd *input_bfd,
1944 bfd *output_bfd ATTRIBUTE_UNUSED,
1945 asection *input_section,
1946 bfd_byte *contents,
1947 bfd_vma offset,
1948 bfd_vma value,
1949 bfd_vma addend,
1950 struct bfd_link_info *info,
1951 asection *sym_sec,
1952 int is_local ATTRIBUTE_UNUSED)
1953 {
1954 unsigned int r_type = howto->type;
1955 bfd_byte *hit_data = contents + offset;
1956
1957 /* Adjust the value according to the relocation. */
1958 switch (r_type)
1959 {
1960 case R_V850_PC9:
1961 case R_V850_9_PCREL:
1962 value -= (input_section->output_section->vma
1963 + input_section->output_offset);
1964 value -= offset;
1965 break;
1966
1967 case R_V850_PC16U:
1968 case R_V850_16_PCREL:
1969 value -= (input_section->output_section->vma
1970 + input_section->output_offset
1971 + offset);
1972
1973 /* If the sign extension will corrupt the value then we have overflowed. */
1974 if ((value & 0xffff0000) != 0xffff0000)
1975 return bfd_reloc_overflow;
1976
1977 break;
1978
1979 case R_V850_PC17:
1980 case R_V850_17_PCREL:
1981 value -= (input_section->output_section->vma
1982 + input_section->output_offset
1983 + offset);
1984
1985 /* If the sign extension will corrupt the value then we have overflowed. */
1986 if (((value & 0xffff0000) != 0x0) && ((value & 0xffff0000) != 0xffff0000))
1987 return bfd_reloc_overflow;
1988
1989 value = SEXT17 (value);
1990 break;
1991
1992 case R_V850_PCR22:
1993 case R_V850_22_PCREL:
1994 value -= (input_section->output_section->vma
1995 + input_section->output_offset
1996 + offset);
1997
1998 /* If the sign extension will corrupt the value then we have overflowed. */
1999 if (((value & 0xffe00000) != 0x0) && ((value & 0xffe00000) != 0xffe00000))
2000 return bfd_reloc_overflow;
2001
2002 /* Only the bottom 22 bits of the PC are valid. */
2003 value = SEXT22 (value);
2004 break;
2005
2006 case R_V850_PC32:
2007 case R_V850_32_PCREL:
2008 value -= (input_section->output_section->vma
2009 + input_section->output_offset
2010 + offset);
2011 break;
2012
2013 case R_V850_32_ABS:
2014 case R_V850_23:
2015 case R_V850_HI16_S:
2016 case R_V850_HI16:
2017 case R_V850_LO16:
2018 case R_V850_LO16_S1:
2019 case R_V850_LO16_SPLIT_OFFSET:
2020 case R_V850_16:
2021 case R_V850_ABS32:
2022 case R_V850_8:
2023 case R_V810_BYTE:
2024 case R_V810_HWORD:
2025 case R_V810_WORD:
2026 case R_V810_WLO:
2027 case R_V810_WHI:
2028 case R_V810_WHI1:
2029 case R_V810_WLO_1:
2030 case R_V850_WLO23:
2031 case R_V850_BLO:
2032 break;
2033
2034 case R_V850_ZDA_15_16_OFFSET:
2035 case R_V850_ZDA_16_16_OFFSET:
2036 case R_V850_ZDA_16_16_SPLIT_OFFSET:
2037 if (sym_sec == NULL)
2038 return bfd_reloc_undefined;
2039
2040 value -= sym_sec->output_section->vma;
2041 break;
2042
2043 case R_V850_SDA_15_16_OFFSET:
2044 case R_V850_SDA_16_16_OFFSET:
2045 case R_V850_SDA_16_16_SPLIT_OFFSET:
2046 case R_V810_GPWLO_1:
2047 {
2048 unsigned long gp;
2049 struct bfd_link_hash_entry * h;
2050
2051 if (sym_sec == NULL)
2052 return bfd_reloc_undefined;
2053
2054 /* Get the value of __gp. */
2055 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
2056 if (h == NULL
2057 || h->type != bfd_link_hash_defined)
2058 return bfd_reloc_gp_not_found;
2059
2060 gp = (h->u.def.value
2061 + h->u.def.section->output_section->vma
2062 + h->u.def.section->output_offset);
2063
2064 value -= sym_sec->output_section->vma;
2065 value -= (gp - sym_sec->output_section->vma);
2066 }
2067 break;
2068
2069 case R_V850_TDA_4_4_OFFSET:
2070 case R_V850_TDA_4_5_OFFSET:
2071 case R_V850_TDA_7_7_OFFSET:
2072 case R_V850_TDA_7_8_OFFSET:
2073 case R_V850_TDA_6_8_OFFSET:
2074 case R_V850_TDA_16_16_OFFSET:
2075 {
2076 unsigned long ep;
2077 struct bfd_link_hash_entry * h;
2078
2079 /* Get the value of __ep. */
2080 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
2081 if (h == NULL
2082 || h->type != bfd_link_hash_defined)
2083 return bfd_reloc_ep_not_found;
2084
2085 ep = (h->u.def.value
2086 + h->u.def.section->output_section->vma
2087 + h->u.def.section->output_offset);
2088
2089 value -= ep;
2090 }
2091 break;
2092
2093 case R_V850_CALLT_6_7_OFFSET:
2094 {
2095 unsigned long ctbp;
2096 struct bfd_link_hash_entry * h;
2097
2098 /* Get the value of __ctbp. */
2099 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
2100 if (h == NULL
2101 || h->type != bfd_link_hash_defined)
2102 return bfd_reloc_ctbp_not_found;
2103
2104 ctbp = (h->u.def.value
2105 + h->u.def.section->output_section->vma
2106 + h->u.def.section->output_offset);
2107 value -= ctbp;
2108 }
2109 break;
2110
2111 case R_V850_CALLT_15_16_OFFSET:
2112 case R_V850_CALLT_16_16_OFFSET:
2113 {
2114 unsigned long ctbp;
2115 struct bfd_link_hash_entry * h;
2116
2117 if (sym_sec == NULL)
2118 return bfd_reloc_undefined;
2119
2120 /* Get the value of __ctbp. */
2121 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
2122 if (h == NULL
2123 || h->type != bfd_link_hash_defined)
2124 return bfd_reloc_ctbp_not_found;
2125
2126 ctbp = (h->u.def.value
2127 + h->u.def.section->output_section->vma
2128 + h->u.def.section->output_offset);
2129
2130 value -= sym_sec->output_section->vma;
2131 value -= (ctbp - sym_sec->output_section->vma);
2132 }
2133 break;
2134
2135 case R_V850_NONE:
2136 case R_V810_NONE:
2137 case R_V850_GNU_VTINHERIT:
2138 case R_V850_GNU_VTENTRY:
2139 case R_V850_LONGCALL:
2140 case R_V850_LONGJUMP:
2141 case R_V850_ALIGN:
2142 return bfd_reloc_ok;
2143
2144 default:
2145 #ifdef DEBUG
2146 fprintf (stderr, "reloc number %d not recognised\n", r_type);
2147 #endif
2148 return bfd_reloc_notsupported;
2149 }
2150
2151 /* Perform the relocation. */
2152 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
2153 }
2154 \f
2155 /* Relocate an V850 ELF section. */
2156
2157 static bfd_boolean
2158 v850_elf_relocate_section (bfd *output_bfd,
2159 struct bfd_link_info *info,
2160 bfd *input_bfd,
2161 asection *input_section,
2162 bfd_byte *contents,
2163 Elf_Internal_Rela *relocs,
2164 Elf_Internal_Sym *local_syms,
2165 asection **local_sections)
2166 {
2167 Elf_Internal_Shdr *symtab_hdr;
2168 struct elf_link_hash_entry **sym_hashes;
2169 Elf_Internal_Rela *rel;
2170 Elf_Internal_Rela *relend;
2171
2172 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2173 sym_hashes = elf_sym_hashes (input_bfd);
2174
2175 /* Reset the list of remembered HI16S relocs to empty. */
2176 free_hi16s = previous_hi16s;
2177 previous_hi16s = NULL;
2178 hi16s_counter = 0;
2179
2180 rel = relocs;
2181 relend = relocs + input_section->reloc_count;
2182 for (; rel < relend; rel++)
2183 {
2184 unsigned int r_type;
2185 reloc_howto_type *howto;
2186 unsigned long r_symndx;
2187 Elf_Internal_Sym *sym;
2188 asection *sec;
2189 struct elf_link_hash_entry *h;
2190 bfd_vma relocation;
2191 bfd_reloc_status_type r;
2192
2193 r_symndx = ELF32_R_SYM (rel->r_info);
2194 r_type = ELF32_R_TYPE (rel->r_info);
2195
2196 if (r_type == R_V850_GNU_VTENTRY
2197 || r_type == R_V850_GNU_VTINHERIT)
2198 continue;
2199
2200 if (bfd_get_arch (input_bfd) == bfd_arch_v850_rh850)
2201 howto = v800_elf_howto_table + (r_type - R_V810_NONE);
2202 else
2203 howto = v850_elf_howto_table + r_type;
2204
2205 BFD_ASSERT (r_type == howto->type);
2206
2207 h = NULL;
2208 sym = NULL;
2209 sec = NULL;
2210 if (r_symndx < symtab_hdr->sh_info)
2211 {
2212 sym = local_syms + r_symndx;
2213 sec = local_sections[r_symndx];
2214 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2215 }
2216 else
2217 {
2218 bfd_boolean unresolved_reloc, warned, ignored;
2219
2220 /* Note - this check is delayed until now as it is possible and
2221 valid to have a file without any symbols but with relocs that
2222 can be processed. */
2223 if (sym_hashes == NULL)
2224 {
2225 info->callbacks->warning
2226 (info, "no hash table available",
2227 NULL, input_bfd, input_section, (bfd_vma) 0);
2228
2229 return FALSE;
2230 }
2231
2232 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2233 r_symndx, symtab_hdr, sym_hashes,
2234 h, sec, relocation,
2235 unresolved_reloc, warned, ignored);
2236 }
2237
2238 if (sec != NULL && discarded_section (sec))
2239 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2240 rel, 1, relend, howto, 0, contents);
2241
2242 if (info->relocatable)
2243 continue;
2244
2245 /* FIXME: We should use the addend, but the COFF relocations don't. */
2246 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
2247 input_section,
2248 contents, rel->r_offset,
2249 relocation, rel->r_addend,
2250 info, sec, h == NULL);
2251
2252 if (r != bfd_reloc_ok)
2253 {
2254 const char * name;
2255 const char * msg = NULL;
2256
2257 if (h != NULL)
2258 name = h->root.root.string;
2259 else
2260 {
2261 name = (bfd_elf_string_from_elf_section
2262 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2263 if (name == NULL || *name == '\0')
2264 name = bfd_section_name (input_bfd, sec);
2265 }
2266
2267 switch ((int) r)
2268 {
2269 case bfd_reloc_overflow:
2270 if (! ((*info->callbacks->reloc_overflow)
2271 (info, (h ? &h->root : NULL), name, howto->name,
2272 (bfd_vma) 0, input_bfd, input_section,
2273 rel->r_offset)))
2274 return FALSE;
2275 break;
2276
2277 case bfd_reloc_undefined:
2278 if (! ((*info->callbacks->undefined_symbol)
2279 (info, name, input_bfd, input_section,
2280 rel->r_offset, TRUE)))
2281 return FALSE;
2282 break;
2283
2284 case bfd_reloc_outofrange:
2285 msg = _("internal error: out of range error");
2286 goto common_error;
2287
2288 case bfd_reloc_notsupported:
2289 msg = _("internal error: unsupported relocation error");
2290 goto common_error;
2291
2292 case bfd_reloc_dangerous:
2293 msg = _("internal error: dangerous relocation");
2294 goto common_error;
2295
2296 case bfd_reloc_gp_not_found:
2297 msg = _("could not locate special linker symbol __gp");
2298 goto common_error;
2299
2300 case bfd_reloc_ep_not_found:
2301 msg = _("could not locate special linker symbol __ep");
2302 goto common_error;
2303
2304 case bfd_reloc_ctbp_not_found:
2305 msg = _("could not locate special linker symbol __ctbp");
2306 goto common_error;
2307
2308 default:
2309 msg = _("internal error: unknown error");
2310 /* fall through */
2311
2312 common_error:
2313 if (!((*info->callbacks->warning)
2314 (info, msg, name, input_bfd, input_section,
2315 rel->r_offset)))
2316 return FALSE;
2317 break;
2318 }
2319 }
2320 }
2321
2322 return TRUE;
2323 }
2324
2325 static asection *
2326 v850_elf_gc_mark_hook (asection *sec,
2327 struct bfd_link_info *info,
2328 Elf_Internal_Rela *rel,
2329 struct elf_link_hash_entry *h,
2330 Elf_Internal_Sym *sym)
2331 {
2332 if (h != NULL)
2333 switch (ELF32_R_TYPE (rel->r_info))
2334 {
2335 case R_V850_GNU_VTINHERIT:
2336 case R_V850_GNU_VTENTRY:
2337 return NULL;
2338 }
2339
2340 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2341 }
2342
2343 /* Set the right machine number and architecture. */
2344
2345 static bfd_boolean
2346 v850_elf_object_p (bfd *abfd)
2347 {
2348 enum bfd_architecture arch;
2349 unsigned long mach;
2350
2351 switch (elf_elfheader (abfd)->e_machine)
2352 {
2353 case EM_V800:
2354 arch = bfd_arch_v850_rh850;
2355 mach = (elf_elfheader (abfd)->e_flags & EF_V800_850E3)
2356 ? bfd_mach_v850e3v5 : bfd_mach_v850e2v3;
2357 break;
2358
2359 case EM_CYGNUS_V850:
2360 case EM_V850:
2361 arch = bfd_arch_v850;
2362 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
2363 {
2364 default:
2365 case E_V850_ARCH: mach = bfd_mach_v850; break;
2366 case E_V850E_ARCH: mach = bfd_mach_v850e; break;
2367 case E_V850E1_ARCH: mach = bfd_mach_v850e1; break;
2368 case E_V850E2_ARCH: mach = bfd_mach_v850e2; break;
2369 case E_V850E2V3_ARCH: mach = bfd_mach_v850e2v3; break;
2370 case E_V850E3V5_ARCH: mach = bfd_mach_v850e3v5; break;
2371 }
2372 break;
2373
2374 default:
2375 return FALSE;
2376 }
2377
2378 return bfd_default_set_arch_mach (abfd, arch, mach);
2379 }
2380
2381 /* Store the machine number in the flags field. */
2382
2383 static void
2384 v850_elf_final_write_processing (bfd *abfd,
2385 bfd_boolean linker ATTRIBUTE_UNUSED)
2386 {
2387 unsigned long val;
2388
2389 switch (bfd_get_arch (abfd))
2390 {
2391 case bfd_arch_v850_rh850:
2392 val = EF_RH850_ABI;
2393 if (bfd_get_mach (abfd) == bfd_mach_v850e3v5)
2394 val |= EF_V800_850E3;
2395 elf_elfheader (abfd)->e_flags |= val;
2396 break;
2397
2398 case bfd_arch_v850:
2399 switch (bfd_get_mach (abfd))
2400 {
2401 default:
2402 case bfd_mach_v850: val = E_V850_ARCH; break;
2403 case bfd_mach_v850e: val = E_V850E_ARCH; break;
2404 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
2405 case bfd_mach_v850e2: val = E_V850E2_ARCH; break;
2406 case bfd_mach_v850e2v3: val = E_V850E2V3_ARCH; break;
2407 case bfd_mach_v850e3v5: val = E_V850E3V5_ARCH; break;
2408 }
2409 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
2410 elf_elfheader (abfd)->e_flags |= val;
2411 break;
2412 default:
2413 break;
2414 }
2415 }
2416
2417 /* Function to keep V850 specific file flags. */
2418
2419 static bfd_boolean
2420 v850_elf_set_private_flags (bfd *abfd, flagword flags)
2421 {
2422 BFD_ASSERT (!elf_flags_init (abfd)
2423 || elf_elfheader (abfd)->e_flags == flags);
2424
2425 elf_elfheader (abfd)->e_flags = flags;
2426 elf_flags_init (abfd) = TRUE;
2427 return TRUE;
2428 }
2429
2430 /* Merge backend specific data from an object file
2431 to the output object file when linking. */
2432
2433 static bfd_boolean
2434 v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2435 {
2436 flagword out_flags;
2437 flagword in_flags;
2438
2439 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2440 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2441 return TRUE;
2442
2443 in_flags = elf_elfheader (ibfd)->e_flags;
2444 out_flags = elf_elfheader (obfd)->e_flags;
2445
2446 if (! elf_flags_init (obfd))
2447 {
2448 /* If the input is the default architecture then do not
2449 bother setting the flags for the output architecture,
2450 instead allow future merges to do this. If no future
2451 merges ever set these flags then they will retain their
2452 unitialised values, which surprise surprise, correspond
2453 to the default values. */
2454 if (bfd_get_arch_info (ibfd)->the_default)
2455 return TRUE;
2456
2457 elf_flags_init (obfd) = TRUE;
2458 elf_elfheader (obfd)->e_flags = in_flags;
2459
2460 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
2461 && bfd_get_arch_info (obfd)->the_default)
2462 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
2463
2464 return TRUE;
2465 }
2466
2467 /* Check flag compatibility. */
2468 if (in_flags == out_flags)
2469 return TRUE;
2470
2471 if (bfd_get_arch (obfd) == bfd_arch_v850_rh850)
2472 {
2473 if ((in_flags & EF_V800_850E3) != (out_flags & EF_V800_850E3))
2474 {
2475 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
2476 ibfd);
2477 elf_elfheader (obfd)->e_flags |= EF_V800_850E3;
2478 }
2479
2480 if ((in_flags & EF_RH850_DATA_ALIGN8) != (out_flags & EF_RH850_DATA_ALIGN8))
2481 {
2482 _bfd_error_handler (_("%B: Alignment mismatch with previous modules"),
2483 ibfd);
2484 elf_elfheader (obfd)->e_flags |= EF_RH850_DATA_ALIGN8;
2485 }
2486
2487 return TRUE;
2488 }
2489
2490 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
2491 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
2492 {
2493 /* Allow earlier architecture binaries to be linked with later binaries.
2494 Set the output binary to the later architecture, except for v850e1,
2495 which we set to v850e. */
2496 if ( (in_flags & EF_V850_ARCH) == E_V850E1_ARCH
2497 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
2498 return TRUE;
2499
2500 if ( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2501 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
2502 {
2503 elf_elfheader (obfd)->e_flags =
2504 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
2505 return TRUE;
2506 }
2507
2508 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2509 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH)
2510 && (out_flags & EF_V850_ARCH) == E_V850E2_ARCH)
2511 {
2512 elf_elfheader (obfd)->e_flags =
2513 ((out_flags & ~ EF_V850_ARCH) | E_V850E2_ARCH);
2514 return TRUE;
2515 }
2516
2517 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2518 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH
2519 || (in_flags & EF_V850_ARCH) == E_V850E2_ARCH)
2520 && (out_flags & EF_V850_ARCH) == E_V850E2V3_ARCH)
2521 {
2522 elf_elfheader (obfd)->e_flags =
2523 ((out_flags & ~ EF_V850_ARCH) | E_V850E2V3_ARCH);
2524 return TRUE;
2525 }
2526
2527 if (( (in_flags & EF_V850_ARCH) == E_V850_ARCH
2528 || (in_flags & EF_V850_ARCH) == E_V850E_ARCH
2529 || (in_flags & EF_V850_ARCH) == E_V850E2_ARCH
2530 || (in_flags & EF_V850_ARCH) == E_V850E2V3_ARCH)
2531 && (out_flags & EF_V850_ARCH) == E_V850E3V5_ARCH)
2532 {
2533 elf_elfheader (obfd)->e_flags =
2534 ((out_flags & ~ EF_V850_ARCH) | E_V850E3V5_ARCH);
2535 return TRUE;
2536 }
2537
2538 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
2539 ibfd);
2540 }
2541
2542 return TRUE;
2543 }
2544
2545 /* Display the flags field. */
2546
2547 static bfd_boolean
2548 v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
2549 {
2550 FILE * file = (FILE *) ptr;
2551
2552 BFD_ASSERT (abfd != NULL && ptr != NULL);
2553
2554 _bfd_elf_print_private_bfd_data (abfd, ptr);
2555
2556 /* xgettext:c-format. */
2557 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
2558
2559 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
2560 {
2561 if ((elf_elfheader (abfd)->e_flags & EF_RH850_ABI) != EF_RH850_ABI)
2562 fprintf (file, _("unknown v850 architecture"));
2563 else if (elf_elfheader (abfd)->e_flags & EF_V800_850E3)
2564 fprintf (file, _("v850 E3 architecture"));
2565 else
2566 fprintf (file, _("v850 architecture"));
2567
2568 if (elf_elfheader (abfd)->e_flags & EF_RH850_DATA_ALIGN8)
2569 fprintf (file, _(", 8-byte data alignment"));
2570 }
2571 else
2572 {
2573 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
2574 {
2575 default:
2576 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
2577 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
2578 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
2579 case E_V850E2_ARCH: fprintf (file, _("v850e2 architecture")); break;
2580 case E_V850E2V3_ARCH: fprintf (file, _("v850e2v3 architecture")); break;
2581 case E_V850E3V5_ARCH: fprintf (file, _("v850e3v5 architecture")); break;
2582 }
2583 }
2584
2585 fputc ('\n', file);
2586
2587 return TRUE;
2588 }
2589
2590 /* V850 ELF uses four common sections. One is the usual one, and the
2591 others are for (small) objects in one of the special data areas:
2592 small, tiny and zero. All the objects are kept together, and then
2593 referenced via the gp register, the ep register or the r0 register
2594 respectively, which yields smaller, faster assembler code. This
2595 approach is copied from elf32-mips.c. */
2596
2597 static asection v850_elf_scom_section;
2598 static asymbol v850_elf_scom_symbol;
2599 static asymbol * v850_elf_scom_symbol_ptr;
2600 static asection v850_elf_tcom_section;
2601 static asymbol v850_elf_tcom_symbol;
2602 static asymbol * v850_elf_tcom_symbol_ptr;
2603 static asection v850_elf_zcom_section;
2604 static asymbol v850_elf_zcom_symbol;
2605 static asymbol * v850_elf_zcom_symbol_ptr;
2606
2607 /* Given a BFD section, try to locate the
2608 corresponding ELF section index. */
2609
2610 static bfd_boolean
2611 v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
2612 asection *sec,
2613 int *retval)
2614 {
2615 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2616 *retval = SHN_V850_SCOMMON;
2617 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
2618 *retval = SHN_V850_TCOMMON;
2619 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2620 *retval = SHN_V850_ZCOMMON;
2621 else
2622 return FALSE;
2623
2624 return TRUE;
2625 }
2626
2627 /* Handle the special V850 section numbers that a symbol may use. */
2628
2629 static void
2630 v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
2631 {
2632 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2633 unsigned int indx;
2634
2635 indx = elfsym->internal_elf_sym.st_shndx;
2636
2637 /* If the section index is an "ordinary" index, then it may
2638 refer to a v850 specific section created by the assembler.
2639 Check the section's type and change the index it matches.
2640
2641 FIXME: Should we alter the st_shndx field as well ? */
2642
2643 if (indx < elf_numsections (abfd))
2644 switch (elf_elfsections (abfd)[indx]->sh_type)
2645 {
2646 case SHT_V850_SCOMMON:
2647 indx = SHN_V850_SCOMMON;
2648 break;
2649
2650 case SHT_V850_TCOMMON:
2651 indx = SHN_V850_TCOMMON;
2652 break;
2653
2654 case SHT_V850_ZCOMMON:
2655 indx = SHN_V850_ZCOMMON;
2656 break;
2657
2658 default:
2659 break;
2660 }
2661
2662 switch (indx)
2663 {
2664 case SHN_V850_SCOMMON:
2665 if (v850_elf_scom_section.name == NULL)
2666 {
2667 /* Initialize the small common section. */
2668 v850_elf_scom_section.name = ".scommon";
2669 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2670 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2671 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2672 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2673 v850_elf_scom_symbol.name = ".scommon";
2674 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2675 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2676 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2677 }
2678 asym->section = & v850_elf_scom_section;
2679 asym->value = elfsym->internal_elf_sym.st_size;
2680 break;
2681
2682 case SHN_V850_TCOMMON:
2683 if (v850_elf_tcom_section.name == NULL)
2684 {
2685 /* Initialize the tcommon section. */
2686 v850_elf_tcom_section.name = ".tcommon";
2687 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2688 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2689 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2690 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2691 v850_elf_tcom_symbol.name = ".tcommon";
2692 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2693 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2694 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2695 }
2696 asym->section = & v850_elf_tcom_section;
2697 asym->value = elfsym->internal_elf_sym.st_size;
2698 break;
2699
2700 case SHN_V850_ZCOMMON:
2701 if (v850_elf_zcom_section.name == NULL)
2702 {
2703 /* Initialize the zcommon section. */
2704 v850_elf_zcom_section.name = ".zcommon";
2705 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2706 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2707 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2708 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2709 v850_elf_zcom_symbol.name = ".zcommon";
2710 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2711 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2712 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2713 }
2714 asym->section = & v850_elf_zcom_section;
2715 asym->value = elfsym->internal_elf_sym.st_size;
2716 break;
2717 }
2718 }
2719
2720 /* Hook called by the linker routine which adds symbols from an object
2721 file. We must handle the special v850 section numbers here. */
2722
2723 static bfd_boolean
2724 v850_elf_add_symbol_hook (bfd *abfd,
2725 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2726 Elf_Internal_Sym *sym,
2727 const char **namep ATTRIBUTE_UNUSED,
2728 flagword *flagsp ATTRIBUTE_UNUSED,
2729 asection **secp,
2730 bfd_vma *valp)
2731 {
2732 unsigned int indx = sym->st_shndx;
2733
2734 /* If the section index is an "ordinary" index, then it may
2735 refer to a v850 specific section created by the assembler.
2736 Check the section's type and change the index it matches.
2737
2738 FIXME: Should we alter the st_shndx field as well ? */
2739
2740 if (indx < elf_numsections (abfd))
2741 switch (elf_elfsections (abfd)[indx]->sh_type)
2742 {
2743 case SHT_V850_SCOMMON:
2744 indx = SHN_V850_SCOMMON;
2745 break;
2746
2747 case SHT_V850_TCOMMON:
2748 indx = SHN_V850_TCOMMON;
2749 break;
2750
2751 case SHT_V850_ZCOMMON:
2752 indx = SHN_V850_ZCOMMON;
2753 break;
2754
2755 default:
2756 break;
2757 }
2758
2759 switch (indx)
2760 {
2761 case SHN_V850_SCOMMON:
2762 *secp = bfd_make_section_old_way (abfd, ".scommon");
2763 (*secp)->flags |= SEC_IS_COMMON;
2764 *valp = sym->st_size;
2765 break;
2766
2767 case SHN_V850_TCOMMON:
2768 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2769 (*secp)->flags |= SEC_IS_COMMON;
2770 *valp = sym->st_size;
2771 break;
2772
2773 case SHN_V850_ZCOMMON:
2774 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2775 (*secp)->flags |= SEC_IS_COMMON;
2776 *valp = sym->st_size;
2777 break;
2778 }
2779
2780 return TRUE;
2781 }
2782
2783 static int
2784 v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2785 const char *name ATTRIBUTE_UNUSED,
2786 Elf_Internal_Sym *sym,
2787 asection *input_sec,
2788 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2789 {
2790 /* If we see a common symbol, which implies a relocatable link, then
2791 if a symbol was in a special common section in an input file, mark
2792 it as a special common in the output file. */
2793
2794 if (sym->st_shndx == SHN_COMMON)
2795 {
2796 if (strcmp (input_sec->name, ".scommon") == 0)
2797 sym->st_shndx = SHN_V850_SCOMMON;
2798 else if (strcmp (input_sec->name, ".tcommon") == 0)
2799 sym->st_shndx = SHN_V850_TCOMMON;
2800 else if (strcmp (input_sec->name, ".zcommon") == 0)
2801 sym->st_shndx = SHN_V850_ZCOMMON;
2802 }
2803
2804 /* The price we pay for using h->other unused bits as flags in the
2805 linker is cleaning up after ourselves. */
2806
2807 sym->st_other &= ~(V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA
2808 | V850_OTHER_ERROR);
2809
2810 return 1;
2811 }
2812
2813 static bfd_boolean
2814 v850_elf_section_from_shdr (bfd *abfd,
2815 Elf_Internal_Shdr *hdr,
2816 const char *name,
2817 int shindex)
2818 {
2819 /* There ought to be a place to keep ELF backend specific flags, but
2820 at the moment there isn't one. We just keep track of the
2821 sections by their name, instead. */
2822
2823 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2824 return FALSE;
2825
2826 switch (hdr->sh_type)
2827 {
2828 case SHT_V850_SCOMMON:
2829 case SHT_V850_TCOMMON:
2830 case SHT_V850_ZCOMMON:
2831 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2832 (bfd_get_section_flags (abfd,
2833 hdr->bfd_section)
2834 | SEC_IS_COMMON)))
2835 return FALSE;
2836 }
2837
2838 return TRUE;
2839 }
2840
2841 /* Set the correct type for a V850 ELF section. We do this
2842 by the section name, which is a hack, but ought to work. */
2843
2844 static bfd_boolean
2845 v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2846 Elf_Internal_Shdr *hdr,
2847 asection *sec)
2848 {
2849 const char * name;
2850
2851 name = bfd_get_section_name (abfd, sec);
2852
2853 if (strcmp (name, ".scommon") == 0)
2854 hdr->sh_type = SHT_V850_SCOMMON;
2855 else if (strcmp (name, ".tcommon") == 0)
2856 hdr->sh_type = SHT_V850_TCOMMON;
2857 else if (strcmp (name, ".zcommon") == 0)
2858 hdr->sh_type = SHT_V850_ZCOMMON;
2859
2860 return TRUE;
2861 }
2862
2863 /* Delete some bytes from a section while relaxing. */
2864
2865 static bfd_boolean
2866 v850_elf_relax_delete_bytes (bfd *abfd,
2867 asection *sec,
2868 bfd_vma addr,
2869 bfd_vma toaddr,
2870 int count)
2871 {
2872 Elf_Internal_Shdr *symtab_hdr;
2873 Elf32_External_Sym *extsyms;
2874 Elf32_External_Sym *esym;
2875 Elf32_External_Sym *esymend;
2876 int sym_index;
2877 unsigned int sec_shndx;
2878 bfd_byte *contents;
2879 Elf_Internal_Rela *irel;
2880 Elf_Internal_Rela *irelend;
2881 struct elf_link_hash_entry *sym_hash;
2882 Elf_Internal_Shdr *shndx_hdr;
2883 Elf_External_Sym_Shndx *shndx;
2884
2885 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2886 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2887
2888 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2889
2890 contents = elf_section_data (sec)->this_hdr.contents;
2891
2892 /* The deletion must stop at the next ALIGN reloc for an alignment
2893 power larger than the number of bytes we are deleting. */
2894
2895 /* Actually delete the bytes. */
2896 #if (DEBUG_RELAX & 2)
2897 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2898 sec->name, addr, toaddr, count );
2899 #endif
2900 memmove (contents + addr, contents + addr + count,
2901 toaddr - addr - count);
2902 memset (contents + toaddr-count, 0, count);
2903
2904 /* Adjust all the relocs. */
2905 irel = elf_section_data (sec)->relocs;
2906 irelend = irel + sec->reloc_count;
2907 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2908 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2909
2910 for (; irel < irelend; irel++)
2911 {
2912 bfd_vma raddr, paddr, symval;
2913 Elf_Internal_Sym isym;
2914
2915 /* Get the new reloc address. */
2916 raddr = irel->r_offset;
2917 if ((raddr >= (addr + count) && raddr < toaddr))
2918 irel->r_offset -= count;
2919
2920 if (raddr >= addr && raddr < addr + count)
2921 {
2922 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2923 (int) R_V850_NONE);
2924 continue;
2925 }
2926
2927 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2928 continue;
2929
2930 bfd_elf32_swap_symbol_in (abfd,
2931 extsyms + ELF32_R_SYM (irel->r_info),
2932 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2933 & isym);
2934
2935 if (isym.st_shndx != sec_shndx)
2936 continue;
2937
2938 /* Get the value of the symbol referred to by the reloc. */
2939 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2940 {
2941 symval = isym.st_value;
2942 #if (DEBUG_RELAX & 2)
2943 {
2944 char * name = bfd_elf_string_from_elf_section
2945 (abfd, symtab_hdr->sh_link, isym.st_name);
2946 fprintf (stderr,
2947 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2948 sec->name, name, isym.st_name,
2949 sec->output_section->vma, sec->output_offset,
2950 isym.st_value, irel->r_addend);
2951 }
2952 #endif
2953 }
2954 else
2955 {
2956 unsigned long indx;
2957 struct elf_link_hash_entry * h;
2958
2959 /* An external symbol. */
2960 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2961
2962 h = elf_sym_hashes (abfd) [indx];
2963 BFD_ASSERT (h != NULL);
2964
2965 symval = h->root.u.def.value;
2966 #if (DEBUG_RELAX & 2)
2967 fprintf (stderr,
2968 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2969 sec->name, h->root.root.string, h->root.u.def.value,
2970 sec->output_section->vma, sec->output_offset, irel->r_addend);
2971 #endif
2972 }
2973
2974 paddr = symval + irel->r_addend;
2975
2976 if ( (symval >= addr + count && symval < toaddr)
2977 && (paddr < addr + count || paddr >= toaddr))
2978 irel->r_addend += count;
2979 else if ( (symval < addr + count || symval >= toaddr)
2980 && (paddr >= addr + count && paddr < toaddr))
2981 irel->r_addend -= count;
2982 }
2983
2984 /* Adjust the local symbols defined in this section. */
2985 esym = extsyms;
2986 esymend = esym + symtab_hdr->sh_info;
2987
2988 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2989 {
2990 Elf_Internal_Sym isym;
2991
2992 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2993
2994 if (isym.st_shndx == sec_shndx
2995 && isym.st_value >= addr + count
2996 && isym.st_value < toaddr)
2997 {
2998 isym.st_value -= count;
2999
3000 if (isym.st_value + isym.st_size >= toaddr)
3001 isym.st_size += count;
3002
3003 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3004 }
3005 else if (isym.st_shndx == sec_shndx
3006 && isym.st_value < addr + count)
3007 {
3008 if (isym.st_value+isym.st_size >= addr + count
3009 && isym.st_value+isym.st_size < toaddr)
3010 isym.st_size -= count;
3011
3012 if (isym.st_value >= addr
3013 && isym.st_value < addr + count)
3014 isym.st_value = addr;
3015
3016 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3017 }
3018 }
3019
3020 /* Now adjust the global symbols defined in this section. */
3021 esym = extsyms + symtab_hdr->sh_info;
3022 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
3023
3024 for (sym_index = 0; esym < esymend; esym ++, sym_index ++)
3025 {
3026 Elf_Internal_Sym isym;
3027
3028 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
3029 sym_hash = elf_sym_hashes (abfd) [sym_index];
3030
3031 if (isym.st_shndx == sec_shndx
3032 && ((sym_hash)->root.type == bfd_link_hash_defined
3033 || (sym_hash)->root.type == bfd_link_hash_defweak)
3034 && (sym_hash)->root.u.def.section == sec
3035 && (sym_hash)->root.u.def.value >= addr + count
3036 && (sym_hash)->root.u.def.value < toaddr)
3037 {
3038 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
3039 {
3040 isym.st_size += count;
3041 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3042 }
3043
3044 (sym_hash)->root.u.def.value -= count;
3045 }
3046 else if (isym.st_shndx == sec_shndx
3047 && ((sym_hash)->root.type == bfd_link_hash_defined
3048 || (sym_hash)->root.type == bfd_link_hash_defweak)
3049 && (sym_hash)->root.u.def.section == sec
3050 && (sym_hash)->root.u.def.value < addr + count)
3051 {
3052 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
3053 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
3054 isym.st_size -= count;
3055
3056 if ((sym_hash)->root.u.def.value >= addr
3057 && (sym_hash)->root.u.def.value < addr + count)
3058 (sym_hash)->root.u.def.value = addr;
3059
3060 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
3061 }
3062
3063 if (shndx)
3064 ++ shndx;
3065 }
3066
3067 return TRUE;
3068 }
3069
3070 #define NOP_OPCODE (0x0000)
3071 #define MOVHI 0x0640 /* 4byte. */
3072 #define MOVHI_MASK 0x07e0
3073 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte. */
3074 #define MOVHI_R2(insn) ((insn) >> 11)
3075 #define MOVEA 0x0620 /* 2byte. */
3076 #define MOVEA_MASK 0x07e0
3077 #define MOVEA_R1(insn) ((insn) & 0x1f)
3078 #define MOVEA_R2(insn) ((insn) >> 11)
3079 #define JARL_4 0x00040780 /* 4byte. */
3080 #define JARL_4_MASK 0xFFFF07FF
3081 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
3082 #define ADD_I 0x0240 /* 2byte. */
3083 #define ADD_I_MASK 0x07e0
3084 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte. */
3085 #define ADD_R2(insn) ((insn) >> 11)
3086 #define JMP_R 0x0060 /* 2byte. */
3087 #define JMP_R_MASK 0xFFE0
3088 #define JMP_R1(insn) ((insn) & 0x1f)
3089
3090 static bfd_boolean
3091 v850_elf_relax_section (bfd *abfd,
3092 asection *sec,
3093 struct bfd_link_info *link_info,
3094 bfd_boolean *again)
3095 {
3096 Elf_Internal_Shdr *symtab_hdr;
3097 Elf_Internal_Rela *internal_relocs;
3098 Elf_Internal_Rela *irel;
3099 Elf_Internal_Rela *irelend;
3100 Elf_Internal_Rela *irelalign = NULL;
3101 Elf_Internal_Sym *isymbuf = NULL;
3102 bfd_byte *contents = NULL;
3103 bfd_vma addr = 0;
3104 bfd_vma toaddr;
3105 int align_pad_size = 0;
3106 bfd_boolean result = TRUE;
3107
3108 *again = FALSE;
3109
3110 if (link_info->relocatable
3111 || (sec->flags & SEC_RELOC) == 0
3112 || sec->reloc_count == 0)
3113 return TRUE;
3114
3115 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
3116
3117 internal_relocs = (_bfd_elf_link_read_relocs
3118 (abfd, sec, NULL, NULL, link_info->keep_memory));
3119 if (internal_relocs == NULL)
3120 goto error_return;
3121
3122 irelend = internal_relocs + sec->reloc_count;
3123
3124 while (addr < sec->size)
3125 {
3126 toaddr = sec->size;
3127
3128 for (irel = internal_relocs; irel < irelend; irel ++)
3129 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3130 && irel->r_offset > addr
3131 && irel->r_offset < toaddr)
3132 toaddr = irel->r_offset;
3133
3134 #ifdef DEBUG_RELAX
3135 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
3136 addr, toaddr, align_pad_size);
3137 #endif
3138 if (irelalign)
3139 {
3140 bfd_vma alignto;
3141 bfd_vma alignmoveto;
3142
3143 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
3144 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
3145
3146 if (alignmoveto < alignto)
3147 {
3148 bfd_vma i;
3149
3150 align_pad_size = alignto - alignmoveto;
3151 #ifdef DEBUG_RELAX
3152 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
3153 alignmoveto, toaddr, align_pad_size);
3154 #endif
3155 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
3156 toaddr, align_pad_size))
3157 goto error_return;
3158
3159 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
3160 (i + 1) < toaddr; i += 2)
3161 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
3162
3163 addr = alignmoveto;
3164 }
3165 else
3166 align_pad_size = 0;
3167 }
3168
3169 for (irel = internal_relocs; irel < irelend; irel++)
3170 {
3171 bfd_vma laddr;
3172 bfd_vma addend;
3173 bfd_vma symval;
3174 int insn[5];
3175 int no_match = -1;
3176 Elf_Internal_Rela *hi_irelfn;
3177 Elf_Internal_Rela *lo_irelfn;
3178 Elf_Internal_Rela *irelcall;
3179 bfd_signed_vma foff;
3180 unsigned int r_type;
3181
3182 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
3183 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
3184 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
3185 continue;
3186
3187 #ifdef DEBUG_RELAX
3188 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
3189 irel->r_info,
3190 irel->r_offset,
3191 irel->r_addend );
3192 #endif
3193
3194 /* Get the section contents. */
3195 if (contents == NULL)
3196 {
3197 if (elf_section_data (sec)->this_hdr.contents != NULL)
3198 contents = elf_section_data (sec)->this_hdr.contents;
3199 else
3200 {
3201 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3202 goto error_return;
3203 }
3204 }
3205
3206 /* Read this BFD's local symbols if we haven't done so already. */
3207 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
3208 {
3209 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3210 if (isymbuf == NULL)
3211 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
3212 symtab_hdr->sh_info, 0,
3213 NULL, NULL, NULL);
3214 if (isymbuf == NULL)
3215 goto error_return;
3216 }
3217
3218 laddr = irel->r_offset;
3219
3220 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
3221 {
3222 /* Check code for -mlong-calls output. */
3223 if (laddr + 16 <= (bfd_vma) sec->size)
3224 {
3225 insn[0] = bfd_get_16 (abfd, contents + laddr);
3226 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
3227 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
3228 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
3229 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
3230
3231 if ((insn[0] & MOVHI_MASK) != MOVHI
3232 || MOVHI_R1 (insn[0]) != 0)
3233 no_match = 0;
3234
3235 if (no_match < 0
3236 && ((insn[1] & MOVEA_MASK) != MOVEA
3237 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
3238 no_match = 1;
3239
3240 if (no_match < 0
3241 && (insn[2] & JARL_4_MASK) != JARL_4)
3242 no_match = 2;
3243
3244 if (no_match < 0
3245 && ((insn[3] & ADD_I_MASK) != ADD_I
3246 || ADD_I5 (insn[3]) != 4
3247 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
3248 no_match = 3;
3249
3250 if (no_match < 0
3251 && ((insn[4] & JMP_R_MASK) != JMP_R
3252 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
3253 no_match = 4;
3254 }
3255 else
3256 {
3257 ((*_bfd_error_handler)
3258 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
3259 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
3260
3261 continue;
3262 }
3263
3264 if (no_match >= 0)
3265 {
3266 ((*_bfd_error_handler)
3267 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
3268 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
3269
3270 continue;
3271 }
3272
3273 /* Get the reloc for the address from which the register is
3274 being loaded. This reloc will tell us which function is
3275 actually being called. */
3276
3277 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
3278 {
3279 r_type = ELF32_R_TYPE (hi_irelfn->r_info);
3280
3281 if (hi_irelfn->r_offset == laddr + 2
3282 && (r_type == (int) R_V850_HI16_S || r_type == (int) R_V810_WHI1))
3283 break;
3284 }
3285
3286 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
3287 {
3288 r_type = ELF32_R_TYPE (lo_irelfn->r_info);
3289
3290 if (lo_irelfn->r_offset == laddr + 6
3291 && (r_type == (int) R_V850_LO16 || r_type == (int) R_V810_WLO))
3292 break;
3293 }
3294
3295 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
3296 {
3297 r_type = ELF32_R_TYPE (irelcall->r_info);
3298
3299 if (irelcall->r_offset == laddr + 8
3300 && (r_type == (int) R_V850_22_PCREL || r_type == (int) R_V850_PCR22))
3301 break;
3302 }
3303
3304 if ( hi_irelfn == irelend
3305 || lo_irelfn == irelend
3306 || irelcall == irelend)
3307 {
3308 ((*_bfd_error_handler)
3309 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
3310 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
3311
3312 continue;
3313 }
3314
3315 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
3316 {
3317 Elf_Internal_Sym * isym;
3318
3319 /* A local symbol. */
3320 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
3321
3322 symval = isym->st_value;
3323 }
3324 else
3325 {
3326 unsigned long indx;
3327 struct elf_link_hash_entry * h;
3328
3329 /* An external symbol. */
3330 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
3331 h = elf_sym_hashes (abfd)[indx];
3332 BFD_ASSERT (h != NULL);
3333
3334 if ( h->root.type != bfd_link_hash_defined
3335 && h->root.type != bfd_link_hash_defweak)
3336 /* This appears to be a reference to an undefined
3337 symbol. Just ignore it--it will be caught by the
3338 regular reloc processing. */
3339 continue;
3340
3341 symval = h->root.u.def.value;
3342 }
3343
3344 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
3345 {
3346 ((*_bfd_error_handler)
3347 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
3348 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
3349
3350 continue;
3351 }
3352
3353 /* Get the value of the symbol referred to by the reloc. */
3354 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3355 {
3356 Elf_Internal_Sym *isym;
3357 asection *sym_sec;
3358
3359 /* A local symbol. */
3360 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
3361
3362 if (isym->st_shndx == SHN_UNDEF)
3363 sym_sec = bfd_und_section_ptr;
3364 else if (isym->st_shndx == SHN_ABS)
3365 sym_sec = bfd_abs_section_ptr;
3366 else if (isym->st_shndx == SHN_COMMON)
3367 sym_sec = bfd_com_section_ptr;
3368 else
3369 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3370 symval = (isym->st_value
3371 + sym_sec->output_section->vma
3372 + sym_sec->output_offset);
3373 }
3374 else
3375 {
3376 unsigned long indx;
3377 struct elf_link_hash_entry *h;
3378
3379 /* An external symbol. */
3380 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
3381 h = elf_sym_hashes (abfd)[indx];
3382 BFD_ASSERT (h != NULL);
3383
3384 if ( h->root.type != bfd_link_hash_defined
3385 && h->root.type != bfd_link_hash_defweak)
3386 /* This appears to be a reference to an undefined
3387 symbol. Just ignore it--it will be caught by the
3388 regular reloc processing. */
3389 continue;
3390
3391 symval = (h->root.u.def.value
3392 + h->root.u.def.section->output_section->vma
3393 + h->root.u.def.section->output_offset);
3394 }
3395
3396 addend = irel->r_addend;
3397
3398 foff = (symval + addend
3399 - (irel->r_offset
3400 + sec->output_section->vma
3401 + sec->output_offset
3402 + 4));
3403 #ifdef DEBUG_RELAX
3404 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3405 irel->r_offset,
3406 (irel->r_offset
3407 + sec->output_section->vma
3408 + sec->output_offset),
3409 symval, addend, foff);
3410 #endif
3411
3412 if (foff < -0x100000 || foff >= 0x100000)
3413 /* After all that work, we can't shorten this function call. */
3414 continue;
3415
3416 /* For simplicity of coding, we are going to modify the section
3417 contents, the section relocs, and the BFD symbol table. We
3418 must tell the rest of the code not to free up this
3419 information. It would be possible to instead create a table
3420 of changes which have to be made, as is done in coff-mips.c;
3421 that would be more work, but would require less memory when
3422 the linker is run. */
3423 elf_section_data (sec)->relocs = internal_relocs;
3424 elf_section_data (sec)->this_hdr.contents = contents;
3425 symtab_hdr->contents = (bfd_byte *) isymbuf;
3426
3427 /* Replace the long call with a jarl. */
3428 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3429 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_PCR22);
3430 else
3431 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
3432
3433 addend = 0;
3434
3435 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3436 /* If this needs to be changed because of future relaxing,
3437 it will be handled here like other internal IND12W
3438 relocs. */
3439 bfd_put_32 (abfd,
3440 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
3441 contents + irel->r_offset);
3442 else
3443 /* We can't fully resolve this yet, because the external
3444 symbol value may be changed by future relaxing.
3445 We let the final link phase handle it. */
3446 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
3447 contents + irel->r_offset);
3448
3449 hi_irelfn->r_info =
3450 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3451 lo_irelfn->r_info =
3452 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3453 irelcall->r_info =
3454 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
3455
3456 if (! v850_elf_relax_delete_bytes (abfd, sec,
3457 irel->r_offset + 4, toaddr, 12))
3458 goto error_return;
3459
3460 align_pad_size += 12;
3461 }
3462 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
3463 {
3464 /* Check code for -mlong-jumps output. */
3465 if (laddr + 10 <= (bfd_vma) sec->size)
3466 {
3467 insn[0] = bfd_get_16 (abfd, contents + laddr);
3468 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
3469 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
3470
3471 if ((insn[0] & MOVHI_MASK) != MOVHI
3472 || MOVHI_R1 (insn[0]) != 0)
3473 no_match = 0;
3474
3475 if (no_match < 0
3476 && ((insn[1] & MOVEA_MASK) != MOVEA
3477 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
3478 no_match = 1;
3479
3480 if (no_match < 0
3481 && ((insn[2] & JMP_R_MASK) != JMP_R
3482 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
3483 no_match = 4;
3484 }
3485 else
3486 {
3487 ((*_bfd_error_handler)
3488 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
3489 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
3490
3491 continue;
3492 }
3493
3494 if (no_match >= 0)
3495 {
3496 ((*_bfd_error_handler)
3497 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
3498 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
3499
3500 continue;
3501 }
3502
3503 /* Get the reloc for the address from which the register is
3504 being loaded. This reloc will tell us which function is
3505 actually being called. */
3506 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
3507 {
3508 r_type = ELF32_R_TYPE (hi_irelfn->r_info);
3509
3510 if (hi_irelfn->r_offset == laddr + 2
3511 && ((r_type == (int) R_V850_HI16_S) || r_type == (int) R_V810_WHI1))
3512 break;
3513 }
3514
3515 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
3516 {
3517 r_type = ELF32_R_TYPE (lo_irelfn->r_info);
3518
3519 if (lo_irelfn->r_offset == laddr + 6
3520 && (r_type == (int) R_V850_LO16 || r_type == (int) R_V810_WLO))
3521 break;
3522 }
3523
3524 if ( hi_irelfn == irelend
3525 || lo_irelfn == irelend)
3526 {
3527 ((*_bfd_error_handler)
3528 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
3529 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
3530
3531 continue;
3532 }
3533
3534 /* Get the value of the symbol referred to by the reloc. */
3535 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3536 {
3537 Elf_Internal_Sym * isym;
3538 asection * sym_sec;
3539
3540 /* A local symbol. */
3541 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
3542
3543 if (isym->st_shndx == SHN_UNDEF)
3544 sym_sec = bfd_und_section_ptr;
3545 else if (isym->st_shndx == SHN_ABS)
3546 sym_sec = bfd_abs_section_ptr;
3547 else if (isym->st_shndx == SHN_COMMON)
3548 sym_sec = bfd_com_section_ptr;
3549 else
3550 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3551 symval = (isym->st_value
3552 + sym_sec->output_section->vma
3553 + sym_sec->output_offset);
3554 #ifdef DEBUG_RELAX
3555 {
3556 char * name = bfd_elf_string_from_elf_section
3557 (abfd, symtab_hdr->sh_link, isym->st_name);
3558
3559 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
3560 sym_sec->name, name, isym->st_name,
3561 sym_sec->output_section->vma,
3562 sym_sec->output_offset,
3563 isym->st_value, irel->r_addend);
3564 }
3565 #endif
3566 }
3567 else
3568 {
3569 unsigned long indx;
3570 struct elf_link_hash_entry * h;
3571
3572 /* An external symbol. */
3573 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
3574 h = elf_sym_hashes (abfd)[indx];
3575 BFD_ASSERT (h != NULL);
3576
3577 if ( h->root.type != bfd_link_hash_defined
3578 && h->root.type != bfd_link_hash_defweak)
3579 /* This appears to be a reference to an undefined
3580 symbol. Just ignore it--it will be caught by the
3581 regular reloc processing. */
3582 continue;
3583
3584 symval = (h->root.u.def.value
3585 + h->root.u.def.section->output_section->vma
3586 + h->root.u.def.section->output_offset);
3587 #ifdef DEBUG_RELAX
3588 fprintf (stderr,
3589 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
3590 sec->name, h->root.root.string, h->root.u.def.value,
3591 sec->output_section->vma, sec->output_offset, irel->r_addend);
3592 #endif
3593 }
3594
3595 addend = irel->r_addend;
3596
3597 foff = (symval + addend
3598 - (irel->r_offset
3599 + sec->output_section->vma
3600 + sec->output_offset
3601 + 4));
3602 #ifdef DEBUG_RELAX
3603 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3604 irel->r_offset,
3605 (irel->r_offset
3606 + sec->output_section->vma
3607 + sec->output_offset),
3608 symval, addend, foff);
3609 #endif
3610 if (foff < -0x100000 || foff >= 0x100000)
3611 /* After all that work, we can't shorten this function call. */
3612 continue;
3613
3614 /* For simplicity of coding, we are going to modify the section
3615 contents, the section relocs, and the BFD symbol table. We
3616 must tell the rest of the code not to free up this
3617 information. It would be possible to instead create a table
3618 of changes which have to be made, as is done in coff-mips.c;
3619 that would be more work, but would require less memory when
3620 the linker is run. */
3621 elf_section_data (sec)->relocs = internal_relocs;
3622 elf_section_data (sec)->this_hdr.contents = contents;
3623 symtab_hdr->contents = (bfd_byte *) isymbuf;
3624
3625 if (foff < -0x100 || foff >= 0x100)
3626 {
3627 /* Replace the long jump with a jr. */
3628
3629 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3630 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_PCR22);
3631 else
3632 irel->r_info =
3633 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3634
3635 irel->r_addend = addend;
3636 addend = 0;
3637
3638 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3639 /* If this needs to be changed because of future relaxing,
3640 it will be handled here like other internal IND12W
3641 relocs. */
3642 bfd_put_32 (abfd,
3643 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3644 contents + irel->r_offset);
3645 else
3646 /* We can't fully resolve this yet, because the external
3647 symbol value may be changed by future relaxing.
3648 We let the final link phase handle it. */
3649 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3650
3651 hi_irelfn->r_info =
3652 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3653 lo_irelfn->r_info =
3654 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3655 if (!v850_elf_relax_delete_bytes (abfd, sec,
3656 irel->r_offset + 4, toaddr, 6))
3657 goto error_return;
3658
3659 align_pad_size += 6;
3660 }
3661 else
3662 {
3663 /* Replace the long jump with a br. */
3664
3665 if (bfd_get_arch (abfd) == bfd_arch_v850_rh850)
3666 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_PC9);
3667 else
3668 irel->r_info =
3669 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3670
3671 irel->r_addend = addend;
3672 addend = 0;
3673
3674 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3675 /* If this needs to be changed because of future relaxing,
3676 it will be handled here like other internal IND12W
3677 relocs. */
3678 bfd_put_16 (abfd,
3679 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3680 contents + irel->r_offset);
3681 else
3682 /* We can't fully resolve this yet, because the external
3683 symbol value may be changed by future relaxing.
3684 We let the final link phase handle it. */
3685 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3686
3687 hi_irelfn->r_info =
3688 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3689 lo_irelfn->r_info =
3690 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3691 if (!v850_elf_relax_delete_bytes (abfd, sec,
3692 irel->r_offset + 2, toaddr, 8))
3693 goto error_return;
3694
3695 align_pad_size += 8;
3696 }
3697 }
3698 }
3699
3700 irelalign = NULL;
3701 for (irel = internal_relocs; irel < irelend; irel++)
3702 {
3703 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3704 && irel->r_offset == toaddr)
3705 {
3706 irel->r_offset -= align_pad_size;
3707
3708 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3709 irelalign = irel;
3710 }
3711 }
3712
3713 addr = toaddr;
3714 }
3715
3716 if (!irelalign)
3717 {
3718 #ifdef DEBUG_RELAX
3719 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3720 align_pad_size,
3721 sec->size,
3722 sec->size - align_pad_size);
3723 #endif
3724 sec->size -= align_pad_size;
3725 }
3726
3727 finish:
3728 if (internal_relocs != NULL
3729 && elf_section_data (sec)->relocs != internal_relocs)
3730 free (internal_relocs);
3731
3732 if (contents != NULL
3733 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3734 free (contents);
3735
3736 if (isymbuf != NULL
3737 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3738 free (isymbuf);
3739
3740 return result;
3741
3742 error_return:
3743 result = FALSE;
3744 goto finish;
3745 }
3746
3747 static const struct bfd_elf_special_section v850_elf_special_sections[] =
3748 {
3749 { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) },
3750 { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3751 + SHF_EXECINSTR) },
3752 { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3753 + SHF_V850_GPREL) },
3754 { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3755 + SHF_V850_R0REL) },
3756 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3757 + SHF_V850_GPREL) },
3758 { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3759 + SHF_V850_GPREL) },
3760 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3761 + SHF_V850_GPREL) },
3762 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3763 + SHF_V850_EPREL) },
3764 { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3765 + SHF_V850_R0REL) },
3766 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3767 + SHF_V850_EPREL) },
3768 { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3769 + SHF_V850_R0REL) },
3770 { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3771 + SHF_V850_R0REL) },
3772 { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3773 + SHF_V850_R0REL) },
3774 { NULL, 0, 0, 0, 0 }
3775 };
3776 \f
3777 #define TARGET_LITTLE_SYM v850_elf32_vec
3778 #define TARGET_LITTLE_NAME "elf32-v850"
3779 #define ELF_ARCH bfd_arch_v850
3780 #define ELF_MACHINE_CODE EM_V850
3781 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3782 #define ELF_MAXPAGESIZE 0x1000
3783
3784 #define elf_info_to_howto v850_elf_info_to_howto_rela
3785 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3786
3787 #define elf_backend_check_relocs v850_elf_check_relocs
3788 #define elf_backend_relocate_section v850_elf_relocate_section
3789 #define elf_backend_object_p v850_elf_object_p
3790 #define elf_backend_final_write_processing v850_elf_final_write_processing
3791 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3792 #define elf_backend_symbol_processing v850_elf_symbol_processing
3793 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3794 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3795 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3796 #define elf_backend_fake_sections v850_elf_fake_sections
3797 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3798 #define elf_backend_special_sections v850_elf_special_sections
3799
3800 #define elf_backend_can_gc_sections 1
3801 #define elf_backend_rela_normal 1
3802
3803 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3804 #define bfd_elf32_bfd_is_target_special_symbol v850_elf_is_target_special_symbol
3805
3806 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3807 #define bfd_elf32_bfd_reloc_name_lookup v850_elf_reloc_name_lookup
3808 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3809 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3810 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3811 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3812
3813 #define elf_symbol_leading_char '_'
3814
3815 #undef elf32_bed
3816 #define elf32_bed elf32_v850_bed
3817
3818 #include "elf32-target.h"
3819
3820 /* Map BFD reloc types to V800 ELF reloc types. */
3821
3822 static const struct v850_elf_reloc_map v800_elf_reloc_map[] =
3823 {
3824 { BFD_RELOC_NONE, R_V810_NONE },
3825 { BFD_RELOC_8, R_V810_BYTE },
3826 { BFD_RELOC_16, R_V810_HWORD },
3827 { BFD_RELOC_32, R_V810_WORD },
3828 { BFD_RELOC_LO16, R_V810_WLO },
3829 { BFD_RELOC_HI16, R_V810_WHI },
3830 { BFD_RELOC_HI16_S, R_V810_WHI1 },
3831 { BFD_RELOC_V850_32_PCREL, R_V850_PC32 },
3832 { BFD_RELOC_V850_22_PCREL, R_V850_PCR22 },
3833 { BFD_RELOC_V850_17_PCREL, R_V850_PC17 },
3834 { BFD_RELOC_V850_16_PCREL, R_V850_PC16U },
3835 { BFD_RELOC_V850_9_PCREL, R_V850_PC9 },
3836 { BFD_RELOC_V850_LO16_S1, R_V810_WLO_1 }, /* Or R_V850_HWLO or R_V850_HWLO_1. */
3837 { BFD_RELOC_V850_23, R_V850_WLO23 },
3838 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_BLO },
3839 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V810_HWORD },
3840 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V810_HWORD },
3841 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V810_HWORD },
3842 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V810_GPWLO_1 }
3843 };
3844
3845 /* Map a bfd relocation into the appropriate howto structure. */
3846
3847 static reloc_howto_type *
3848 v800_elf_reloc_type_lookup (bfd * abfd, bfd_reloc_code_real_type code)
3849 {
3850 unsigned int i;
3851
3852 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3853
3854 for (i = ARRAY_SIZE (v800_elf_reloc_map); i --;)
3855 if (v800_elf_reloc_map[i].bfd_reloc_val == code)
3856 {
3857 unsigned int elf_reloc_val = v800_elf_reloc_map[i].elf_reloc_val;
3858 unsigned int idx = elf_reloc_val - R_V810_NONE;
3859
3860 BFD_ASSERT (v800_elf_howto_table[idx].type == elf_reloc_val);
3861
3862 return v800_elf_howto_table + idx;
3863 }
3864
3865 #ifdef DEBUG
3866 fprintf (stderr, "failed to find v800 equiv of bfd reloc code %d\n", code);
3867 #endif
3868 return NULL;
3869 }
3870
3871 static reloc_howto_type *
3872 v800_elf_reloc_name_lookup (bfd * abfd, const char * r_name)
3873 {
3874 unsigned int i;
3875
3876 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3877
3878 for (i = ARRAY_SIZE (v800_elf_howto_table); i--;)
3879 if (v800_elf_howto_table[i].name != NULL
3880 && strcasecmp (v800_elf_howto_table[i].name, r_name) == 0)
3881 return v800_elf_howto_table + i;
3882
3883 return NULL;
3884 }
3885
3886
3887 /* Set the howto pointer in CACHE_PTR for a V800 ELF reloc. */
3888
3889 static void
3890 v800_elf_info_to_howto (bfd * abfd,
3891 arelent * cache_ptr,
3892 Elf_Internal_Rela * dst)
3893 {
3894 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
3895
3896 BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_v850_rh850);
3897
3898 BFD_ASSERT (r_type < (unsigned int) R_V800_max);
3899
3900 if (r_type == R_V800_NONE)
3901 r_type = R_V810_NONE;
3902
3903 BFD_ASSERT (r_type >= (unsigned int) R_V810_NONE);
3904 r_type -= R_V810_NONE;
3905 BFD_ASSERT (r_type < ARRAY_SIZE (v800_elf_howto_table));
3906
3907 cache_ptr->howto = v800_elf_howto_table + r_type;
3908 }
3909 \f
3910
3911 #undef TARGET_LITTLE_SYM
3912 #define TARGET_LITTLE_SYM v800_elf32_vec
3913 #undef TARGET_LITTLE_NAME
3914 #define TARGET_LITTLE_NAME "elf32-v850-rh850"
3915 #undef ELF_ARCH
3916 #define ELF_ARCH bfd_arch_v850_rh850
3917 #undef ELF_MACHINE_CODE
3918 #define ELF_MACHINE_CODE EM_V800
3919 #undef ELF_MACHINE_ALT1
3920
3921 #undef elf32_bed
3922 #define elf32_bed elf32_v850_rh850_bed
3923
3924 #undef elf_info_to_howto
3925 #define elf_info_to_howto v800_elf_info_to_howto
3926 #undef elf_info_to_howto_rel
3927 #define elf_info_to_howto_rel NULL
3928 #undef bfd_elf32_bfd_reloc_type_lookup
3929 #define bfd_elf32_bfd_reloc_type_lookup v800_elf_reloc_type_lookup
3930 #undef bfd_elf32_bfd_reloc_name_lookup
3931 #define bfd_elf32_bfd_reloc_name_lookup v800_elf_reloc_name_lookup
3932
3933 #include "elf32-target.h"
GDB Binutils - Deliverables
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