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[thirdparty/binutils-gdb.git] / bfd / elf32-v850.c
1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22
23 /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
24 dependencies. As is the gas & simulator code for the v850. */
25
26 #include "sysdep.h"
27 #include "bfd.h"
28 #include "bfdlink.h"
29 #include "libbfd.h"
30 #include "elf-bfd.h"
31 #include "elf/v850.h"
32 #include "libiberty.h"
33
34 /* Sign-extend a 24-bit number. */
35 #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
36
37 static reloc_howto_type v850_elf_howto_table[];
38
39 /* Look through the relocs for a section during the first phase, and
40 allocate space in the global offset table or procedure linkage
41 table. */
42
43 static bfd_boolean
44 v850_elf_check_relocs (bfd *abfd,
45 struct bfd_link_info *info,
46 asection *sec,
47 const Elf_Internal_Rela *relocs)
48 {
49 bfd_boolean ret = TRUE;
50 bfd *dynobj;
51 Elf_Internal_Shdr *symtab_hdr;
52 struct elf_link_hash_entry **sym_hashes;
53 const Elf_Internal_Rela *rel;
54 const Elf_Internal_Rela *rel_end;
55 asection *sreloc;
56 enum v850_reloc_type 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 dynobj = elf_hash_table (info)->dynobj;
69 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
70 sym_hashes = elf_sym_hashes (abfd);
71 sreloc = NULL;
72
73 rel_end = relocs + sec->reloc_count;
74 for (rel = relocs; rel < rel_end; rel++)
75 {
76 unsigned long r_symndx;
77 struct elf_link_hash_entry *h;
78
79 r_symndx = ELF32_R_SYM (rel->r_info);
80 if (r_symndx < symtab_hdr->sh_info)
81 h = NULL;
82 else
83 {
84 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
85 while (h->root.type == bfd_link_hash_indirect
86 || h->root.type == bfd_link_hash_warning)
87 h = (struct elf_link_hash_entry *) h->root.u.i.link;
88 }
89
90 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
91 switch (r_type)
92 {
93 default:
94 case R_V850_NONE:
95 case R_V850_9_PCREL:
96 case R_V850_22_PCREL:
97 case R_V850_HI16_S:
98 case R_V850_HI16:
99 case R_V850_LO16:
100 case R_V850_LO16_SPLIT_OFFSET:
101 case R_V850_ABS32:
102 case R_V850_REL32:
103 case R_V850_16:
104 case R_V850_8:
105 case R_V850_CALLT_6_7_OFFSET:
106 case R_V850_CALLT_16_16_OFFSET:
107 break;
108
109 /* This relocation describes the C++ object vtable hierarchy.
110 Reconstruct it for later use during GC. */
111 case R_V850_GNU_VTINHERIT:
112 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
113 return FALSE;
114 break;
115
116 /* This relocation describes which C++ vtable entries
117 are actually used. Record for later use during GC. */
118 case R_V850_GNU_VTENTRY:
119 BFD_ASSERT (h != NULL);
120 if (h != NULL
121 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
122 return FALSE;
123 break;
124
125 case R_V850_SDA_16_16_SPLIT_OFFSET:
126 case R_V850_SDA_16_16_OFFSET:
127 case R_V850_SDA_15_16_OFFSET:
128 other = V850_OTHER_SDA;
129 common = ".scommon";
130 goto small_data_common;
131
132 case R_V850_ZDA_16_16_SPLIT_OFFSET:
133 case R_V850_ZDA_16_16_OFFSET:
134 case R_V850_ZDA_15_16_OFFSET:
135 other = V850_OTHER_ZDA;
136 common = ".zcommon";
137 goto small_data_common;
138
139 case R_V850_TDA_4_5_OFFSET:
140 case R_V850_TDA_4_4_OFFSET:
141 case R_V850_TDA_6_8_OFFSET:
142 case R_V850_TDA_7_8_OFFSET:
143 case R_V850_TDA_7_7_OFFSET:
144 case R_V850_TDA_16_16_OFFSET:
145 other = V850_OTHER_TDA;
146 common = ".tcommon";
147 /* fall through */
148
149 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
150
151 small_data_common:
152 if (h)
153 {
154 /* Flag which type of relocation was used. */
155 h->other |= other;
156 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
157 && (h->other & V850_OTHER_ERROR) == 0)
158 {
159 const char * msg;
160 static char buff[200]; /* XXX */
161
162 switch (h->other & V850_OTHER_MASK)
163 {
164 default:
165 msg = _("Variable `%s' cannot occupy in multiple small data regions");
166 break;
167 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
168 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
169 break;
170 case V850_OTHER_SDA | V850_OTHER_ZDA:
171 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
172 break;
173 case V850_OTHER_SDA | V850_OTHER_TDA:
174 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
175 break;
176 case V850_OTHER_ZDA | V850_OTHER_TDA:
177 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
178 break;
179 }
180
181 sprintf (buff, msg, h->root.root.string);
182 info->callbacks->warning (info, buff, h->root.root.string,
183 abfd, h->root.u.def.section,
184 (bfd_vma) 0);
185
186 bfd_set_error (bfd_error_bad_value);
187 h->other |= V850_OTHER_ERROR;
188 ret = FALSE;
189 }
190 }
191
192 if (h && h->root.type == bfd_link_hash_common
193 && h->root.u.c.p
194 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
195 {
196 asection * section;
197
198 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
199 section->flags |= SEC_IS_COMMON;
200 }
201
202 #ifdef DEBUG
203 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
204 v850_elf_howto_table[ (int)r_type ].name,
205 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
206 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
207 #endif
208 break;
209 }
210 }
211
212 return ret;
213 }
214
215 /* In the old version, when an entry was checked out from the table,
216 it was deleted. This produced an error if the entry was needed
217 more than once, as the second attempted retry failed.
218
219 In the current version, the entry is not deleted, instead we set
220 the field 'found' to TRUE. If a second lookup matches the same
221 entry, then we know that the hi16s reloc has already been updated
222 and does not need to be updated a second time.
223
224 TODO - TOFIX: If it is possible that we need to restore 2 different
225 addresses from the same table entry, where the first generates an
226 overflow, whilst the second do not, then this code will fail. */
227
228 typedef struct hi16s_location
229 {
230 bfd_vma addend;
231 bfd_byte * address;
232 unsigned long counter;
233 bfd_boolean found;
234 struct hi16s_location * next;
235 }
236 hi16s_location;
237
238 static hi16s_location * previous_hi16s;
239 static hi16s_location * free_hi16s;
240 static unsigned long hi16s_counter;
241
242 static void
243 remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address)
244 {
245 hi16s_location * entry = NULL;
246 bfd_size_type amt = sizeof (* free_hi16s);
247
248 /* Find a free structure. */
249 if (free_hi16s == NULL)
250 free_hi16s = bfd_zalloc (abfd, amt);
251
252 entry = free_hi16s;
253 free_hi16s = free_hi16s->next;
254
255 entry->addend = addend;
256 entry->address = address;
257 entry->counter = hi16s_counter ++;
258 entry->found = FALSE;
259 entry->next = previous_hi16s;
260 previous_hi16s = entry;
261
262 /* Cope with wrap around of our counter. */
263 if (hi16s_counter == 0)
264 {
265 /* XXX: Assume that all counter entries differ only in their low 16 bits. */
266 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
267 entry->counter &= 0xffff;
268
269 hi16s_counter = 0x10000;
270 }
271 }
272
273 static bfd_byte *
274 find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found)
275 {
276 hi16s_location *match = NULL;
277 hi16s_location *entry;
278 hi16s_location *previous = NULL;
279 hi16s_location *prev;
280 bfd_byte *addr;
281
282 /* Search the table. Record the most recent entry that matches. */
283 for (entry = previous_hi16s; entry; entry = entry->next)
284 {
285 if (entry->addend == addend
286 && (match == NULL || match->counter < entry->counter))
287 {
288 previous = prev;
289 match = entry;
290 }
291
292 prev = entry;
293 }
294
295 if (match == NULL)
296 return NULL;
297
298 /* Extract the address. */
299 addr = match->address;
300
301 /* Remember if this entry has already been used before. */
302 if (already_found)
303 * already_found = match->found;
304
305 /* Note that this entry has now been used. */
306 match->found = TRUE;
307
308 return addr;
309 }
310
311 /* Calculate the final operand value for a R_V850_LO16 or
312 R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and
313 ADDEND is the sum of the relocation symbol and offset. Store the
314 operand value in *INSN and return true on success.
315
316 The assembler has already done some of this: If the value stored in
317 the instruction has its 15th bit set, (counting from zero) then the
318 assembler will have added 1 to the value stored in the associated
319 HI16S reloc. So for example, these relocations:
320
321 movhi hi( fred ), r0, r1
322 movea lo( fred ), r1, r1
323
324 will store 0 in the value fields for the MOVHI and MOVEA instructions
325 and addend will be the address of fred, but for these instructions:
326
327 movhi hi( fred + 0x123456), r0, r1
328 movea lo( fred + 0x123456), r1, r1
329
330 the value stored in the MOVHI instruction will be 0x12 and the value
331 stored in the MOVEA instruction will be 0x3456. If however the
332 instructions were:
333
334 movhi hi( fred + 0x10ffff), r0, r1
335 movea lo( fred + 0x10ffff), r1, r1
336
337 then the value stored in the MOVHI instruction would be 0x11 (not
338 0x10) and the value stored in the MOVEA instruction would be 0xffff.
339 Thus (assuming for the moment that the addend is 0), at run time the
340 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
341 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
342 the instructions were:
343
344 movhi hi( fred - 1), r0, r1
345 movea lo( fred - 1), r1, r1
346
347 then 0 is stored in the MOVHI instruction and -1 is stored in the
348 MOVEA instruction.
349
350 Overflow can occur if the addition of the value stored in the
351 instruction plus the addend sets the 15th bit when before it was clear.
352 This is because the 15th bit will be sign extended into the high part,
353 thus reducing its value by one, but since the 15th bit was originally
354 clear, the assembler will not have added 1 to the previous HI16S reloc
355 to compensate for this effect. For example:
356
357 movhi hi( fred + 0x123456), r0, r1
358 movea lo( fred + 0x123456), r1, r1
359
360 The value stored in HI16S reloc is 0x12, the value stored in the LO16
361 reloc is 0x3456. If we assume that the address of fred is 0x00007000
362 then the relocations become:
363
364 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
365 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
366
367 but when the instructions are executed, the MOVEA instruction's value
368 is signed extended, so the sum becomes:
369
370 0x00120000
371 + 0xffffa456
372 ------------
373 0x0011a456 but 'fred + 0x123456' = 0x0012a456
374
375 Note that if the 15th bit was set in the value stored in the LO16
376 reloc, then we do not have to do anything:
377
378 movhi hi( fred + 0x10ffff), r0, r1
379 movea lo( fred + 0x10ffff), r1, r1
380
381 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
382 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
383
384 0x00110000
385 + 0x00006fff
386 ------------
387 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
388
389 Overflow can also occur if the computation carries into the 16th bit
390 and it also results in the 15th bit having the same value as the 15th
391 bit of the original value. What happens is that the HI16S reloc
392 will have already examined the 15th bit of the original value and
393 added 1 to the high part if the bit is set. This compensates for the
394 sign extension of 15th bit of the result of the computation. But now
395 there is a carry into the 16th bit, and this has not been allowed for.
396
397 So, for example if fred is at address 0xf000:
398
399 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
400 movea lo( fred + 0xffff), r1, r1
401
402 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
403 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
404
405 0x00010000
406 + 0xffffefff
407 ------------
408 0x0000efff but 'fred + 0xffff' = 0x0001efff
409
410 Similarly, if the 15th bit remains clear, but overflow occurs into
411 the 16th bit then (assuming the address of fred is 0xf000):
412
413 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
414 movea lo( fred + 0x7000), r1, r1
415
416 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
417 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
418
419 0x00000000
420 + 0x00006fff
421 ------------
422 0x00006fff but 'fred + 0x7000' = 0x00016fff
423
424 Note - there is no need to change anything if a carry occurs, and the
425 15th bit changes its value from being set to being clear, as the HI16S
426 reloc will have already added in 1 to the high part for us:
427
428 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
429 movea lo( fred + 0xffff), r1, r1
430
431 HI16S: 0x0001 + (0x00007000 >> 16)
432 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
433
434 0x00010000
435 + 0x00006fff (bit 15 not set, so the top half is zero)
436 ------------
437 0x00016fff which is right (assuming that fred is at 0x7000)
438
439 but if the 15th bit goes from being clear to being set, then we must
440 once again handle overflow:
441
442 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
443 movea lo( fred + 0x7000), r1, r1
444
445 HI16S: 0x0000 + (0x0000ffff >> 16)
446 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
447
448 0x00000000
449 + 0x00006fff (bit 15 not set, so the top half is zero)
450 ------------
451 0x00006fff which is wrong (assuming that fred is at 0xffff). */
452
453 static bfd_boolean
454 v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn,
455 unsigned long addend)
456 {
457 #define BIT15_SET(x) ((x) & 0x8000)
458 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
459
460 if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend))
461 || (OVERFLOWS (addend, *insn)
462 && ((! BIT15_SET (*insn)) || (BIT15_SET (addend)))))
463 {
464 bfd_boolean already_updated;
465 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
466 (addend, & already_updated);
467
468 /* Amend the matching HI16_S relocation. */
469 if (hi16s_address != NULL)
470 {
471 if (! already_updated)
472 {
473 unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address);
474 hi_insn += 1;
475 bfd_put_16 (abfd, hi_insn, hi16s_address);
476 }
477 }
478 else
479 {
480 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
481 return FALSE;
482 }
483 }
484 #undef OVERFLOWS
485 #undef BIT15_SET
486
487 /* Do not complain if value has top bit set, as this has been
488 anticipated. */
489 *insn = (*insn + addend) & 0xffff;
490 return TRUE;
491 }
492
493 /* FIXME: The code here probably ought to be removed and the code in reloc.c
494 allowed to do its stuff instead. At least for most of the relocs, anyway. */
495
496 static bfd_reloc_status_type
497 v850_elf_perform_relocation (bfd *abfd,
498 unsigned int r_type,
499 bfd_vma addend,
500 bfd_byte *address)
501 {
502 unsigned long insn;
503 unsigned long result;
504 bfd_signed_vma saddend = (bfd_signed_vma) addend;
505
506 switch (r_type)
507 {
508 default:
509 return bfd_reloc_notsupported;
510
511 case R_V850_REL32:
512 case R_V850_ABS32:
513 bfd_put_32 (abfd, addend, address);
514 return bfd_reloc_ok;
515
516 case R_V850_22_PCREL:
517 if (saddend > 0x1fffff || saddend < -0x200000)
518 return bfd_reloc_overflow;
519
520 if ((addend % 2) != 0)
521 return bfd_reloc_dangerous;
522
523 insn = bfd_get_32 (abfd, address);
524 insn &= ~0xfffe003f;
525 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
526 bfd_put_32 (abfd, (bfd_vma) insn, address);
527 return bfd_reloc_ok;
528
529 case R_V850_9_PCREL:
530 if (saddend > 0xff || saddend < -0x100)
531 return bfd_reloc_overflow;
532
533 if ((addend % 2) != 0)
534 return bfd_reloc_dangerous;
535
536 insn = bfd_get_16 (abfd, address);
537 insn &= ~ 0xf870;
538 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
539 break;
540
541 case R_V850_HI16:
542 addend += (bfd_get_16 (abfd, address) << 16);
543 addend = (addend >> 16);
544 insn = addend;
545 break;
546
547 case R_V850_HI16_S:
548 /* Remember where this relocation took place. */
549 remember_hi16s_reloc (abfd, addend, address);
550
551 addend += (bfd_get_16 (abfd, address) << 16);
552 addend = (addend >> 16) + ((addend & 0x8000) != 0);
553
554 /* This relocation cannot overflow. */
555 if (addend > 0x7fff)
556 addend = 0;
557
558 insn = addend;
559 break;
560
561 case R_V850_LO16:
562 insn = bfd_get_16 (abfd, address);
563 if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend))
564 return bfd_reloc_overflow;
565 break;
566
567 case R_V850_8:
568 addend += (char) bfd_get_8 (abfd, address);
569
570 saddend = (bfd_signed_vma) addend;
571
572 if (saddend > 0x7f || saddend < -0x80)
573 return bfd_reloc_overflow;
574
575 bfd_put_8 (abfd, addend, address);
576 return bfd_reloc_ok;
577
578 case R_V850_CALLT_16_16_OFFSET:
579 addend += bfd_get_16 (abfd, address);
580
581 saddend = (bfd_signed_vma) addend;
582
583 if (saddend > 0xffff || saddend < 0)
584 return bfd_reloc_overflow;
585
586 insn = addend;
587 break;
588
589 case R_V850_16:
590 case R_V850_SDA_16_16_OFFSET:
591 case R_V850_ZDA_16_16_OFFSET:
592 case R_V850_TDA_16_16_OFFSET:
593 addend += bfd_get_16 (abfd, address);
594
595 saddend = (bfd_signed_vma) addend;
596
597 if (saddend > 0x7fff || saddend < -0x8000)
598 return bfd_reloc_overflow;
599
600 insn = addend;
601 break;
602
603 case R_V850_SDA_15_16_OFFSET:
604 case R_V850_ZDA_15_16_OFFSET:
605 insn = bfd_get_16 (abfd, address);
606 addend += (insn & 0xfffe);
607
608 saddend = (bfd_signed_vma) addend;
609
610 if (saddend > 0x7ffe || saddend < -0x8000)
611 return bfd_reloc_overflow;
612
613 if (addend & 1)
614 return bfd_reloc_dangerous;
615
616 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
617 break;
618
619 case R_V850_TDA_6_8_OFFSET:
620 insn = bfd_get_16 (abfd, address);
621 addend += ((insn & 0x7e) << 1);
622
623 saddend = (bfd_signed_vma) addend;
624
625 if (saddend > 0xfc || saddend < 0)
626 return bfd_reloc_overflow;
627
628 if (addend & 3)
629 return bfd_reloc_dangerous;
630
631 insn &= 0xff81;
632 insn |= (addend >> 1);
633 break;
634
635 case R_V850_TDA_7_8_OFFSET:
636 insn = bfd_get_16 (abfd, address);
637 addend += ((insn & 0x7f) << 1);
638
639 saddend = (bfd_signed_vma) addend;
640
641 if (saddend > 0xfe || 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_TDA_7_7_OFFSET:
652 insn = bfd_get_16 (abfd, address);
653 addend += insn & 0x7f;
654
655 saddend = (bfd_signed_vma) addend;
656
657 if (saddend > 0x7f || saddend < 0)
658 return bfd_reloc_overflow;
659
660 insn &= 0xff80;
661 insn |= addend;
662 break;
663
664 case R_V850_TDA_4_5_OFFSET:
665 insn = bfd_get_16 (abfd, address);
666 addend += ((insn & 0xf) << 1);
667
668 saddend = (bfd_signed_vma) addend;
669
670 if (saddend > 0x1e || saddend < 0)
671 return bfd_reloc_overflow;
672
673 if (addend & 1)
674 return bfd_reloc_dangerous;
675
676 insn &= 0xfff0;
677 insn |= (addend >> 1);
678 break;
679
680 case R_V850_TDA_4_4_OFFSET:
681 insn = bfd_get_16 (abfd, address);
682 addend += insn & 0xf;
683
684 saddend = (bfd_signed_vma) addend;
685
686 if (saddend > 0xf || saddend < 0)
687 return bfd_reloc_overflow;
688
689 insn &= 0xfff0;
690 insn |= addend;
691 break;
692
693 case R_V850_LO16_SPLIT_OFFSET:
694 insn = bfd_get_32 (abfd, address);
695 result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5);
696 if (! v850_elf_perform_lo16_relocation (abfd, &result, addend))
697 return bfd_reloc_overflow;
698 insn = (((result << 16) & 0xfffe0000)
699 | ((result << 5) & 0x20)
700 | (insn & ~0xfffe0020));
701 bfd_put_32 (abfd, insn, address);
702 return bfd_reloc_ok;
703
704 case R_V850_ZDA_16_16_SPLIT_OFFSET:
705 case R_V850_SDA_16_16_SPLIT_OFFSET:
706 insn = bfd_get_32 (abfd, address);
707 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
708
709 saddend = (bfd_signed_vma) addend;
710
711 if (saddend > 0x7fff || saddend < -0x8000)
712 return bfd_reloc_overflow;
713
714 insn &= 0x0001ffdf;
715 insn |= (addend & 1) << 5;
716 insn |= (addend &~ (bfd_vma) 1) << 16;
717
718 bfd_put_32 (abfd, (bfd_vma) insn, address);
719 return bfd_reloc_ok;
720
721 case R_V850_CALLT_6_7_OFFSET:
722 insn = bfd_get_16 (abfd, address);
723 addend += ((insn & 0x3f) << 1);
724
725 saddend = (bfd_signed_vma) addend;
726
727 if (saddend > 0x7e || saddend < 0)
728 return bfd_reloc_overflow;
729
730 if (addend & 1)
731 return bfd_reloc_dangerous;
732
733 insn &= 0xff80;
734 insn |= (addend >> 1);
735 break;
736
737 case R_V850_GNU_VTINHERIT:
738 case R_V850_GNU_VTENTRY:
739 return bfd_reloc_ok;
740
741 }
742
743 bfd_put_16 (abfd, (bfd_vma) insn, address);
744 return bfd_reloc_ok;
745 }
746 \f
747 /* Insert the addend into the instruction. */
748
749 static bfd_reloc_status_type
750 v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED,
751 arelent *reloc,
752 asymbol *symbol,
753 void * data ATTRIBUTE_UNUSED,
754 asection *isection,
755 bfd *obfd,
756 char **err ATTRIBUTE_UNUSED)
757 {
758 long relocation;
759
760 /* If there is an output BFD,
761 and the symbol is not a section name (which is only defined at final link time),
762 and either we are not putting the addend into the instruction
763 or the addend is zero, so there is nothing to add into the instruction
764 then just fixup the address and return. */
765 if (obfd != NULL
766 && (symbol->flags & BSF_SECTION_SYM) == 0
767 && (! reloc->howto->partial_inplace
768 || reloc->addend == 0))
769 {
770 reloc->address += isection->output_offset;
771 return bfd_reloc_ok;
772 }
773
774 /* Catch relocs involving undefined symbols. */
775 if (bfd_is_und_section (symbol->section)
776 && (symbol->flags & BSF_WEAK) == 0
777 && obfd == NULL)
778 return bfd_reloc_undefined;
779
780 /* We handle final linking of some relocs ourselves. */
781
782 /* Is the address of the relocation really within the section? */
783 if (reloc->address > bfd_get_section_limit (abfd, isection))
784 return bfd_reloc_outofrange;
785
786 /* Work out which section the relocation is targeted at and the
787 initial relocation command value. */
788
789 if (reloc->howto->pc_relative)
790 return bfd_reloc_ok;
791
792 /* Get symbol value. (Common symbols are special.) */
793 if (bfd_is_com_section (symbol->section))
794 relocation = 0;
795 else
796 relocation = symbol->value;
797
798 /* Convert input-section-relative symbol value to absolute + addend. */
799 relocation += symbol->section->output_section->vma;
800 relocation += symbol->section->output_offset;
801 relocation += reloc->addend;
802
803 reloc->addend = relocation;
804 return bfd_reloc_ok;
805 }
806
807 /* This function is used for relocs which are only used
808 for relaxing, which the linker should otherwise ignore. */
809
810 static bfd_reloc_status_type
811 v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
812 arelent *reloc_entry,
813 asymbol *symbol ATTRIBUTE_UNUSED,
814 void * data ATTRIBUTE_UNUSED,
815 asection *input_section,
816 bfd *output_bfd,
817 char **error_message ATTRIBUTE_UNUSED)
818 {
819 if (output_bfd != NULL)
820 reloc_entry->address += input_section->output_offset;
821
822 return bfd_reloc_ok;
823 }
824 /* Note: It is REQUIRED that the 'type' value of each entry
825 in this array match the index of the entry in the array. */
826 static reloc_howto_type v850_elf_howto_table[] =
827 {
828 /* This reloc does nothing. */
829 HOWTO (R_V850_NONE, /* Type. */
830 0, /* Rightshift. */
831 2, /* Size (0 = byte, 1 = short, 2 = long). */
832 32, /* Bitsize. */
833 FALSE, /* PC_relative. */
834 0, /* Bitpos. */
835 complain_overflow_bitfield, /* Complain_on_overflow. */
836 bfd_elf_generic_reloc, /* Special_function. */
837 "R_V850_NONE", /* Name. */
838 FALSE, /* Partial_inplace. */
839 0, /* Src_mask. */
840 0, /* Dst_mask. */
841 FALSE), /* PCrel_offset. */
842
843 /* A PC relative 9 bit branch. */
844 HOWTO (R_V850_9_PCREL, /* Type. */
845 2, /* Rightshift. */
846 2, /* Size (0 = byte, 1 = short, 2 = long). */
847 26, /* Bitsize. */
848 TRUE, /* PC_relative. */
849 0, /* Bitpos. */
850 complain_overflow_bitfield, /* Complain_on_overflow. */
851 v850_elf_reloc, /* Special_function. */
852 "R_V850_9_PCREL", /* Name. */
853 FALSE, /* Partial_inplace. */
854 0x00ffffff, /* Src_mask. */
855 0x00ffffff, /* Dst_mask. */
856 TRUE), /* PCrel_offset. */
857
858 /* A PC relative 22 bit branch. */
859 HOWTO (R_V850_22_PCREL, /* Type. */
860 2, /* Rightshift. */
861 2, /* Size (0 = byte, 1 = short, 2 = long). */
862 22, /* Bitsize. */
863 TRUE, /* PC_relative. */
864 7, /* Bitpos. */
865 complain_overflow_signed, /* Complain_on_overflow. */
866 v850_elf_reloc, /* Special_function. */
867 "R_V850_22_PCREL", /* Name. */
868 FALSE, /* Partial_inplace. */
869 0x07ffff80, /* Src_mask. */
870 0x07ffff80, /* Dst_mask. */
871 TRUE), /* PCrel_offset. */
872
873 /* High 16 bits of symbol value. */
874 HOWTO (R_V850_HI16_S, /* Type. */
875 0, /* Rightshift. */
876 1, /* Size (0 = byte, 1 = short, 2 = long). */
877 16, /* Bitsize. */
878 FALSE, /* PC_relative. */
879 0, /* Bitpos. */
880 complain_overflow_dont, /* Complain_on_overflow. */
881 v850_elf_reloc, /* Special_function. */
882 "R_V850_HI16_S", /* Name. */
883 FALSE, /* Partial_inplace. */
884 0xffff, /* Src_mask. */
885 0xffff, /* Dst_mask. */
886 FALSE), /* PCrel_offset. */
887
888 /* High 16 bits of symbol value. */
889 HOWTO (R_V850_HI16, /* Type. */
890 0, /* Rightshift. */
891 1, /* Size (0 = byte, 1 = short, 2 = long). */
892 16, /* Bitsize. */
893 FALSE, /* PC_relative. */
894 0, /* Bitpos. */
895 complain_overflow_dont, /* Complain_on_overflow. */
896 v850_elf_reloc, /* Special_function. */
897 "R_V850_HI16", /* Name. */
898 FALSE, /* Partial_inplace. */
899 0xffff, /* Src_mask. */
900 0xffff, /* Dst_mask. */
901 FALSE), /* PCrel_offset. */
902
903 /* Low 16 bits of symbol value. */
904 HOWTO (R_V850_LO16, /* Type. */
905 0, /* Rightshift. */
906 1, /* Size (0 = byte, 1 = short, 2 = long). */
907 16, /* Bitsize. */
908 FALSE, /* PC_relative. */
909 0, /* Bitpos. */
910 complain_overflow_dont, /* Complain_on_overflow. */
911 v850_elf_reloc, /* Special_function. */
912 "R_V850_LO16", /* Name. */
913 FALSE, /* Partial_inplace. */
914 0xffff, /* Src_mask. */
915 0xffff, /* Dst_mask. */
916 FALSE), /* PCrel_offset. */
917
918 /* Simple 32bit reloc. */
919 HOWTO (R_V850_ABS32, /* Type. */
920 0, /* Rightshift. */
921 2, /* Size (0 = byte, 1 = short, 2 = long). */
922 32, /* Bitsize. */
923 FALSE, /* PC_relative. */
924 0, /* Bitpos. */
925 complain_overflow_dont, /* Complain_on_overflow. */
926 v850_elf_reloc, /* Special_function. */
927 "R_V850_ABS32", /* Name. */
928 FALSE, /* Partial_inplace. */
929 0xffffffff, /* Src_mask. */
930 0xffffffff, /* Dst_mask. */
931 FALSE), /* PCrel_offset. */
932
933 /* Simple 16bit reloc. */
934 HOWTO (R_V850_16, /* Type. */
935 0, /* Rightshift. */
936 1, /* Size (0 = byte, 1 = short, 2 = long). */
937 16, /* Bitsize. */
938 FALSE, /* PC_relative. */
939 0, /* Bitpos. */
940 complain_overflow_dont, /* Complain_on_overflow. */
941 bfd_elf_generic_reloc, /* Special_function. */
942 "R_V850_16", /* Name. */
943 FALSE, /* Partial_inplace. */
944 0xffff, /* Src_mask. */
945 0xffff, /* Dst_mask. */
946 FALSE), /* PCrel_offset. */
947
948 /* Simple 8bit reloc. */
949 HOWTO (R_V850_8, /* Type. */
950 0, /* Rightshift. */
951 0, /* Size (0 = byte, 1 = short, 2 = long). */
952 8, /* Bitsize. */
953 FALSE, /* PC_relative. */
954 0, /* Bitpos. */
955 complain_overflow_dont, /* Complain_on_overflow. */
956 bfd_elf_generic_reloc, /* Special_function. */
957 "R_V850_8", /* Name. */
958 FALSE, /* Partial_inplace. */
959 0xff, /* Src_mask. */
960 0xff, /* Dst_mask. */
961 FALSE), /* PCrel_offset. */
962
963 /* 16 bit offset from the short data area pointer. */
964 HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */
965 0, /* Rightshift. */
966 1, /* Size (0 = byte, 1 = short, 2 = long). */
967 16, /* Bitsize. */
968 FALSE, /* PC_relative. */
969 0, /* Bitpos. */
970 complain_overflow_dont, /* Complain_on_overflow. */
971 v850_elf_reloc, /* Special_function. */
972 "R_V850_SDA_16_16_OFFSET", /* Name. */
973 FALSE, /* Partial_inplace. */
974 0xffff, /* Src_mask. */
975 0xffff, /* Dst_mask. */
976 FALSE), /* PCrel_offset. */
977
978 /* 15 bit offset from the short data area pointer. */
979 HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */
980 1, /* Rightshift. */
981 1, /* Size (0 = byte, 1 = short, 2 = long). */
982 16, /* Bitsize. */
983 FALSE, /* PC_relative. */
984 1, /* Bitpos. */
985 complain_overflow_dont, /* Complain_on_overflow. */
986 v850_elf_reloc, /* Special_function. */
987 "R_V850_SDA_15_16_OFFSET", /* Name. */
988 FALSE, /* Partial_inplace. */
989 0xfffe, /* Src_mask. */
990 0xfffe, /* Dst_mask. */
991 FALSE), /* PCrel_offset. */
992
993 /* 16 bit offset from the zero data area pointer. */
994 HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */
995 0, /* Rightshift. */
996 1, /* Size (0 = byte, 1 = short, 2 = long). */
997 16, /* Bitsize. */
998 FALSE, /* PC_relative. */
999 0, /* Bitpos. */
1000 complain_overflow_dont, /* Complain_on_overflow. */
1001 v850_elf_reloc, /* Special_function. */
1002 "R_V850_ZDA_16_16_OFFSET", /* Name. */
1003 FALSE, /* Partial_inplace. */
1004 0xffff, /* Src_mask. */
1005 0xffff, /* Dst_mask. */
1006 FALSE), /* PCrel_offset. */
1007
1008 /* 15 bit offset from the zero data area pointer. */
1009 HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */
1010 1, /* Rightshift. */
1011 1, /* Size (0 = byte, 1 = short, 2 = long). */
1012 16, /* Bitsize. */
1013 FALSE, /* PC_relative. */
1014 1, /* Bitpos. */
1015 complain_overflow_dont, /* Complain_on_overflow. */
1016 v850_elf_reloc, /* Special_function. */
1017 "R_V850_ZDA_15_16_OFFSET", /* Name. */
1018 FALSE, /* Partial_inplace. */
1019 0xfffe, /* Src_mask. */
1020 0xfffe, /* Dst_mask. */
1021 FALSE), /* PCrel_offset. */
1022
1023 /* 6 bit offset from the tiny data area pointer. */
1024 HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */
1025 2, /* Rightshift. */
1026 1, /* Size (0 = byte, 1 = short, 2 = long). */
1027 8, /* Bitsize. */
1028 FALSE, /* PC_relative. */
1029 1, /* Bitpos. */
1030 complain_overflow_dont, /* Complain_on_overflow. */
1031 v850_elf_reloc, /* Special_function. */
1032 "R_V850_TDA_6_8_OFFSET", /* Name. */
1033 FALSE, /* Partial_inplace. */
1034 0x7e, /* Src_mask. */
1035 0x7e, /* Dst_mask. */
1036 FALSE), /* PCrel_offset. */
1037
1038 /* 8 bit offset from the tiny data area pointer. */
1039 HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */
1040 1, /* Rightshift. */
1041 1, /* Size (0 = byte, 1 = short, 2 = long). */
1042 8, /* Bitsize. */
1043 FALSE, /* PC_relative. */
1044 0, /* Bitpos. */
1045 complain_overflow_dont, /* Complain_on_overflow. */
1046 v850_elf_reloc, /* Special_function. */
1047 "R_V850_TDA_7_8_OFFSET", /* Name. */
1048 FALSE, /* Partial_inplace. */
1049 0x7f, /* Src_mask. */
1050 0x7f, /* Dst_mask. */
1051 FALSE), /* PCrel_offset. */
1052
1053 /* 7 bit offset from the tiny data area pointer. */
1054 HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */
1055 0, /* Rightshift. */
1056 1, /* Size (0 = byte, 1 = short, 2 = long). */
1057 7, /* Bitsize. */
1058 FALSE, /* PC_relative. */
1059 0, /* Bitpos. */
1060 complain_overflow_dont, /* Complain_on_overflow. */
1061 v850_elf_reloc, /* Special_function. */
1062 "R_V850_TDA_7_7_OFFSET", /* Name. */
1063 FALSE, /* Partial_inplace. */
1064 0x7f, /* Src_mask. */
1065 0x7f, /* Dst_mask. */
1066 FALSE), /* PCrel_offset. */
1067
1068 /* 16 bit offset from the tiny data area pointer! */
1069 HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */
1070 0, /* Rightshift. */
1071 1, /* Size (0 = byte, 1 = short, 2 = long). */
1072 16, /* Bitsize. */
1073 FALSE, /* PC_relative. */
1074 0, /* Bitpos. */
1075 complain_overflow_dont, /* Complain_on_overflow. */
1076 v850_elf_reloc, /* Special_function. */
1077 "R_V850_TDA_16_16_OFFSET", /* Name. */
1078 FALSE, /* Partial_inplace. */
1079 0xffff, /* Src_mask. */
1080 0xfff, /* Dst_mask. */
1081 FALSE), /* PCrel_offset. */
1082
1083 /* 5 bit offset from the tiny data area pointer. */
1084 HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */
1085 1, /* Rightshift. */
1086 1, /* Size (0 = byte, 1 = short, 2 = long). */
1087 5, /* Bitsize. */
1088 FALSE, /* PC_relative. */
1089 0, /* Bitpos. */
1090 complain_overflow_dont, /* Complain_on_overflow. */
1091 v850_elf_reloc, /* Special_function. */
1092 "R_V850_TDA_4_5_OFFSET", /* Name. */
1093 FALSE, /* Partial_inplace. */
1094 0x0f, /* Src_mask. */
1095 0x0f, /* Dst_mask. */
1096 FALSE), /* PCrel_offset. */
1097
1098 /* 4 bit offset from the tiny data area pointer. */
1099 HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */
1100 0, /* Rightshift. */
1101 1, /* Size (0 = byte, 1 = short, 2 = long). */
1102 4, /* Bitsize. */
1103 FALSE, /* PC_relative. */
1104 0, /* Bitpos. */
1105 complain_overflow_dont, /* Complain_on_overflow. */
1106 v850_elf_reloc, /* Special_function. */
1107 "R_V850_TDA_4_4_OFFSET", /* Name. */
1108 FALSE, /* Partial_inplace. */
1109 0x0f, /* Src_mask. */
1110 0x0f, /* Dst_mask. */
1111 FALSE), /* PCrel_offset. */
1112
1113 /* 16 bit offset from the short data area pointer. */
1114 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */
1115 0, /* Rightshift. */
1116 2, /* Size (0 = byte, 1 = short, 2 = long). */
1117 16, /* Bitsize. */
1118 FALSE, /* PC_relative. */
1119 0, /* Bitpos. */
1120 complain_overflow_dont, /* Complain_on_overflow. */
1121 v850_elf_reloc, /* Special_function. */
1122 "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */
1123 FALSE, /* Partial_inplace. */
1124 0xfffe0020, /* Src_mask. */
1125 0xfffe0020, /* Dst_mask. */
1126 FALSE), /* PCrel_offset. */
1127
1128 /* 16 bit offset from the zero data area pointer. */
1129 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */
1130 0, /* Rightshift. */
1131 2, /* Size (0 = byte, 1 = short, 2 = long). */
1132 16, /* Bitsize. */
1133 FALSE, /* PC_relative. */
1134 0, /* Bitpos. */
1135 complain_overflow_dont, /* Complain_on_overflow. */
1136 v850_elf_reloc, /* Special_function. */
1137 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */
1138 FALSE, /* Partial_inplace. */
1139 0xfffe0020, /* Src_mask. */
1140 0xfffe0020, /* Dst_mask. */
1141 FALSE), /* PCrel_offset. */
1142
1143 /* 6 bit offset from the call table base pointer. */
1144 HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */
1145 0, /* Rightshift. */
1146 1, /* Size (0 = byte, 1 = short, 2 = long). */
1147 7, /* Bitsize. */
1148 FALSE, /* PC_relative. */
1149 0, /* Bitpos. */
1150 complain_overflow_dont, /* Complain_on_overflow. */
1151 v850_elf_reloc, /* Special_function. */
1152 "R_V850_CALLT_6_7_OFFSET", /* Name. */
1153 FALSE, /* Partial_inplace. */
1154 0x3f, /* Src_mask. */
1155 0x3f, /* Dst_mask. */
1156 FALSE), /* PCrel_offset. */
1157
1158 /* 16 bit offset from the call table base pointer. */
1159 HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */
1160 0, /* Rightshift. */
1161 1, /* Size (0 = byte, 1 = short, 2 = long). */
1162 16, /* Bitsize. */
1163 FALSE, /* PC_relative. */
1164 0, /* Bitpos. */
1165 complain_overflow_dont, /* Complain_on_overflow. */
1166 v850_elf_reloc, /* Special_function. */
1167 "R_V850_CALLT_16_16_OFFSET", /* Name. */
1168 FALSE, /* Partial_inplace. */
1169 0xffff, /* Src_mask. */
1170 0xffff, /* Dst_mask. */
1171 FALSE), /* PCrel_offset. */
1172
1173 /* GNU extension to record C++ vtable hierarchy */
1174 HOWTO (R_V850_GNU_VTINHERIT, /* Type. */
1175 0, /* Rightshift. */
1176 2, /* Size (0 = byte, 1 = short, 2 = long). */
1177 0, /* Bitsize. */
1178 FALSE, /* PC_relative. */
1179 0, /* Bitpos. */
1180 complain_overflow_dont, /* Complain_on_overflow. */
1181 NULL, /* Special_function. */
1182 "R_V850_GNU_VTINHERIT", /* Name. */
1183 FALSE, /* Partial_inplace. */
1184 0, /* Src_mask. */
1185 0, /* Dst_mask. */
1186 FALSE), /* PCrel_offset. */
1187
1188 /* GNU extension to record C++ vtable member usage */
1189 HOWTO (R_V850_GNU_VTENTRY, /* Type. */
1190 0, /* Rightshift. */
1191 2, /* Size (0 = byte, 1 = short, 2 = long). */
1192 0, /* Bitsize. */
1193 FALSE, /* PC_relative. */
1194 0, /* Bitpos. */
1195 complain_overflow_dont, /* Complain_on_overflow. */
1196 _bfd_elf_rel_vtable_reloc_fn, /* Special_function. */
1197 "R_V850_GNU_VTENTRY", /* Name. */
1198 FALSE, /* Partial_inplace. */
1199 0, /* Src_mask. */
1200 0, /* Dst_mask. */
1201 FALSE), /* PCrel_offset. */
1202
1203 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
1204 pseudo-op when it finds a function call which can be relaxed. */
1205 HOWTO (R_V850_LONGCALL, /* Type. */
1206 0, /* Rightshift. */
1207 2, /* Size (0 = byte, 1 = short, 2 = long). */
1208 32, /* Bitsize. */
1209 TRUE, /* PC_relative. */
1210 0, /* Bitpos. */
1211 complain_overflow_signed, /* Complain_on_overflow. */
1212 v850_elf_ignore_reloc, /* Special_function. */
1213 "R_V850_LONGCALL", /* Name. */
1214 FALSE, /* Partial_inplace. */
1215 0, /* Src_mask. */
1216 0, /* Dst_mask. */
1217 TRUE), /* PCrel_offset. */
1218
1219 /* Indicates a .longjump pseudo-op. The compiler will generate a
1220 .longjump pseudo-op when it finds a branch which can be relaxed. */
1221 HOWTO (R_V850_LONGJUMP, /* Type. */
1222 0, /* Rightshift. */
1223 2, /* Size (0 = byte, 1 = short, 2 = long). */
1224 32, /* Bitsize. */
1225 TRUE, /* PC_relative. */
1226 0, /* Bitpos. */
1227 complain_overflow_signed, /* Complain_on_overflow. */
1228 v850_elf_ignore_reloc, /* Special_function. */
1229 "R_V850_LONGJUMP", /* Name. */
1230 FALSE, /* Partial_inplace. */
1231 0, /* Src_mask. */
1232 0, /* Dst_mask. */
1233 TRUE), /* PCrel_offset. */
1234
1235 HOWTO (R_V850_ALIGN, /* Type. */
1236 0, /* Rightshift. */
1237 1, /* Size (0 = byte, 1 = short, 2 = long). */
1238 0, /* Bitsize. */
1239 FALSE, /* PC_relative. */
1240 0, /* Bitpos. */
1241 complain_overflow_unsigned, /* Complain_on_overflow. */
1242 v850_elf_ignore_reloc, /* Special_function. */
1243 "R_V850_ALIGN", /* Name. */
1244 FALSE, /* Partial_inplace. */
1245 0, /* Src_mask. */
1246 0, /* Dst_mask. */
1247 TRUE), /* PCrel_offset. */
1248
1249 /* Simple pc-relative 32bit reloc. */
1250 HOWTO (R_V850_REL32, /* Type. */
1251 0, /* Rightshift. */
1252 2, /* Size (0 = byte, 1 = short, 2 = long). */
1253 32, /* Bitsize. */
1254 TRUE, /* PC_relative. */
1255 0, /* Bitpos. */
1256 complain_overflow_dont, /* Complain_on_overflow. */
1257 v850_elf_reloc, /* Special_function. */
1258 "R_V850_REL32", /* Name. */
1259 FALSE, /* Partial_inplace. */
1260 0xffffffff, /* Src_mask. */
1261 0xffffffff, /* Dst_mask. */
1262 FALSE), /* PCrel_offset. */
1263
1264 /* An ld.bu version of R_V850_LO16. */
1265 HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */
1266 0, /* Rightshift. */
1267 2, /* Size (0 = byte, 1 = short, 2 = long). */
1268 16, /* Bitsize. */
1269 FALSE, /* PC_relative. */
1270 0, /* Bitpos. */
1271 complain_overflow_dont, /* Complain_on_overflow. */
1272 v850_elf_reloc, /* Special_function. */
1273 "R_V850_LO16_SPLIT_OFFSET", /* Name. */
1274 FALSE, /* Partial_inplace. */
1275 0xfffe0020, /* Src_mask. */
1276 0xfffe0020, /* Dst_mask. */
1277 FALSE), /* PCrel_offset. */
1278 };
1279
1280 /* Map BFD reloc types to V850 ELF reloc types. */
1281
1282 struct v850_elf_reloc_map
1283 {
1284 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
1285 unsigned char. */
1286 bfd_reloc_code_real_type bfd_reloc_val;
1287 unsigned int elf_reloc_val;
1288 };
1289
1290 static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
1291 {
1292 { BFD_RELOC_NONE, R_V850_NONE },
1293 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
1294 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
1295 { BFD_RELOC_HI16_S, R_V850_HI16_S },
1296 { BFD_RELOC_HI16, R_V850_HI16 },
1297 { BFD_RELOC_LO16, R_V850_LO16 },
1298 { BFD_RELOC_32, R_V850_ABS32 },
1299 { BFD_RELOC_32_PCREL, R_V850_REL32 },
1300 { BFD_RELOC_16, R_V850_16 },
1301 { BFD_RELOC_8, R_V850_8 },
1302 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
1303 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
1304 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
1305 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
1306 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
1307 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
1308 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
1309 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
1310 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
1311 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
1312 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET },
1313 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
1314 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
1315 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
1316 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
1317 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
1318 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
1319 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
1320 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
1321 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
1322
1323 };
1324 \f
1325 /* Map a bfd relocation into the appropriate howto structure. */
1326
1327 static reloc_howto_type *
1328 v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1329 bfd_reloc_code_real_type code)
1330 {
1331 unsigned int i;
1332
1333 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
1334 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
1335 {
1336 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
1337
1338 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
1339
1340 return v850_elf_howto_table + elf_reloc_val;
1341 }
1342
1343 return NULL;
1344 }
1345
1346 static reloc_howto_type *
1347 v850_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1348 const char *r_name)
1349 {
1350 unsigned int i;
1351
1352 for (i = 0;
1353 i < sizeof (v850_elf_howto_table) / sizeof (v850_elf_howto_table[0]);
1354 i++)
1355 if (v850_elf_howto_table[i].name != NULL
1356 && strcasecmp (v850_elf_howto_table[i].name, r_name) == 0)
1357 return &v850_elf_howto_table[i];
1358
1359 return NULL;
1360 }
1361 \f
1362 /* Set the howto pointer for an V850 ELF reloc. */
1363
1364 static void
1365 v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1366 arelent *cache_ptr,
1367 Elf_Internal_Rela *dst)
1368 {
1369 unsigned int r_type;
1370
1371 r_type = ELF32_R_TYPE (dst->r_info);
1372 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1373 cache_ptr->howto = &v850_elf_howto_table[r_type];
1374 }
1375
1376 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
1377
1378 static void
1379 v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
1380 arelent * cache_ptr,
1381 Elf_Internal_Rela *dst)
1382 {
1383 unsigned int r_type;
1384
1385 r_type = ELF32_R_TYPE (dst->r_info);
1386 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1387 cache_ptr->howto = &v850_elf_howto_table[r_type];
1388 }
1389 \f
1390 static bfd_boolean
1391 v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
1392 {
1393 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1394 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1395 }
1396 \f
1397 /* We overload some of the bfd_reloc error codes for own purposes. */
1398 #define bfd_reloc_gp_not_found bfd_reloc_other
1399 #define bfd_reloc_ep_not_found bfd_reloc_continue
1400 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1401
1402 /* Perform a relocation as part of a final link. */
1403
1404 static bfd_reloc_status_type
1405 v850_elf_final_link_relocate (reloc_howto_type *howto,
1406 bfd *input_bfd,
1407 bfd *output_bfd ATTRIBUTE_UNUSED,
1408 asection *input_section,
1409 bfd_byte *contents,
1410 bfd_vma offset,
1411 bfd_vma value,
1412 bfd_vma addend,
1413 struct bfd_link_info *info,
1414 asection *sym_sec,
1415 int is_local ATTRIBUTE_UNUSED)
1416 {
1417 unsigned int r_type = howto->type;
1418 bfd_byte *hit_data = contents + offset;
1419
1420 /* Adjust the value according to the relocation. */
1421 switch (r_type)
1422 {
1423 case R_V850_9_PCREL:
1424 value -= (input_section->output_section->vma
1425 + input_section->output_offset);
1426 value -= offset;
1427 break;
1428
1429 case R_V850_22_PCREL:
1430 value -= (input_section->output_section->vma
1431 + input_section->output_offset
1432 + offset);
1433
1434 /* If the sign extension will corrupt the value then we have overflowed. */
1435 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1436 return bfd_reloc_overflow;
1437
1438 /* Only the bottom 24 bits of the PC are valid. */
1439 value = SEXT24 (value);
1440 break;
1441
1442 case R_V850_REL32:
1443 value -= (input_section->output_section->vma
1444 + input_section->output_offset
1445 + offset);
1446 break;
1447
1448 case R_V850_HI16_S:
1449 case R_V850_HI16:
1450 case R_V850_LO16:
1451 case R_V850_LO16_SPLIT_OFFSET:
1452 case R_V850_16:
1453 case R_V850_ABS32:
1454 case R_V850_8:
1455 break;
1456
1457 case R_V850_ZDA_15_16_OFFSET:
1458 case R_V850_ZDA_16_16_OFFSET:
1459 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1460 if (sym_sec == NULL)
1461 return bfd_reloc_undefined;
1462
1463 value -= sym_sec->output_section->vma;
1464 break;
1465
1466 case R_V850_SDA_15_16_OFFSET:
1467 case R_V850_SDA_16_16_OFFSET:
1468 case R_V850_SDA_16_16_SPLIT_OFFSET:
1469 {
1470 unsigned long gp;
1471 struct bfd_link_hash_entry * h;
1472
1473 if (sym_sec == NULL)
1474 return bfd_reloc_undefined;
1475
1476 /* Get the value of __gp. */
1477 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
1478 if (h == NULL
1479 || h->type != bfd_link_hash_defined)
1480 return bfd_reloc_gp_not_found;
1481
1482 gp = (h->u.def.value
1483 + h->u.def.section->output_section->vma
1484 + h->u.def.section->output_offset);
1485
1486 value -= sym_sec->output_section->vma;
1487 value -= (gp - sym_sec->output_section->vma);
1488 }
1489 break;
1490
1491 case R_V850_TDA_4_4_OFFSET:
1492 case R_V850_TDA_4_5_OFFSET:
1493 case R_V850_TDA_16_16_OFFSET:
1494 case R_V850_TDA_7_7_OFFSET:
1495 case R_V850_TDA_7_8_OFFSET:
1496 case R_V850_TDA_6_8_OFFSET:
1497 {
1498 unsigned long ep;
1499 struct bfd_link_hash_entry * h;
1500
1501 /* Get the value of __ep. */
1502 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
1503 if (h == NULL
1504 || h->type != bfd_link_hash_defined)
1505 return bfd_reloc_ep_not_found;
1506
1507 ep = (h->u.def.value
1508 + h->u.def.section->output_section->vma
1509 + h->u.def.section->output_offset);
1510
1511 value -= ep;
1512 }
1513 break;
1514
1515 case R_V850_CALLT_6_7_OFFSET:
1516 {
1517 unsigned long ctbp;
1518 struct bfd_link_hash_entry * h;
1519
1520 /* Get the value of __ctbp. */
1521 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1522 if (h == NULL
1523 || h->type != bfd_link_hash_defined)
1524 return bfd_reloc_ctbp_not_found;
1525
1526 ctbp = (h->u.def.value
1527 + h->u.def.section->output_section->vma
1528 + h->u.def.section->output_offset);
1529 value -= ctbp;
1530 }
1531 break;
1532
1533 case R_V850_CALLT_16_16_OFFSET:
1534 {
1535 unsigned long ctbp;
1536 struct bfd_link_hash_entry * h;
1537
1538 if (sym_sec == NULL)
1539 return bfd_reloc_undefined;
1540
1541 /* Get the value of __ctbp. */
1542 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1543 if (h == NULL
1544 || h->type != bfd_link_hash_defined)
1545 return bfd_reloc_ctbp_not_found;
1546
1547 ctbp = (h->u.def.value
1548 + h->u.def.section->output_section->vma
1549 + h->u.def.section->output_offset);
1550
1551 value -= sym_sec->output_section->vma;
1552 value -= (ctbp - sym_sec->output_section->vma);
1553 }
1554 break;
1555
1556 case R_V850_NONE:
1557 case R_V850_GNU_VTINHERIT:
1558 case R_V850_GNU_VTENTRY:
1559 case R_V850_LONGCALL:
1560 case R_V850_LONGJUMP:
1561 case R_V850_ALIGN:
1562 return bfd_reloc_ok;
1563
1564 default:
1565 return bfd_reloc_notsupported;
1566 }
1567
1568 /* Perform the relocation. */
1569 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1570 }
1571 \f
1572 /* Relocate an V850 ELF section. */
1573
1574 static bfd_boolean
1575 v850_elf_relocate_section (bfd *output_bfd,
1576 struct bfd_link_info *info,
1577 bfd *input_bfd,
1578 asection *input_section,
1579 bfd_byte *contents,
1580 Elf_Internal_Rela *relocs,
1581 Elf_Internal_Sym *local_syms,
1582 asection **local_sections)
1583 {
1584 Elf_Internal_Shdr *symtab_hdr;
1585 struct elf_link_hash_entry **sym_hashes;
1586 Elf_Internal_Rela *rel;
1587 Elf_Internal_Rela *relend;
1588
1589 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1590 sym_hashes = elf_sym_hashes (input_bfd);
1591
1592 /* Reset the list of remembered HI16S relocs to empty. */
1593 free_hi16s = previous_hi16s;
1594 previous_hi16s = NULL;
1595 hi16s_counter = 0;
1596
1597 rel = relocs;
1598 relend = relocs + input_section->reloc_count;
1599 for (; rel < relend; rel++)
1600 {
1601 int r_type;
1602 reloc_howto_type *howto;
1603 unsigned long r_symndx;
1604 Elf_Internal_Sym *sym;
1605 asection *sec;
1606 struct elf_link_hash_entry *h;
1607 bfd_vma relocation;
1608 bfd_reloc_status_type r;
1609
1610 r_symndx = ELF32_R_SYM (rel->r_info);
1611 r_type = ELF32_R_TYPE (rel->r_info);
1612
1613 if (r_type == R_V850_GNU_VTENTRY
1614 || r_type == R_V850_GNU_VTINHERIT)
1615 continue;
1616
1617 howto = v850_elf_howto_table + r_type;
1618 h = NULL;
1619 sym = NULL;
1620 sec = NULL;
1621 if (r_symndx < symtab_hdr->sh_info)
1622 {
1623 sym = local_syms + r_symndx;
1624 sec = local_sections[r_symndx];
1625 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1626 }
1627 else
1628 {
1629 bfd_boolean unresolved_reloc, warned;
1630
1631 /* Note - this check is delayed until now as it is possible and
1632 valid to have a file without any symbols but with relocs that
1633 can be processed. */
1634 if (sym_hashes == NULL)
1635 {
1636 info->callbacks->warning
1637 (info, "no hash table available",
1638 NULL, input_bfd, input_section, (bfd_vma) 0);
1639
1640 return FALSE;
1641 }
1642
1643 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1644 r_symndx, symtab_hdr, sym_hashes,
1645 h, sec, relocation,
1646 unresolved_reloc, warned);
1647 }
1648
1649 if (sec != NULL && elf_discarded_section (sec))
1650 {
1651 /* For relocs against symbols from removed linkonce sections,
1652 or sections discarded by a linker script, we just want the
1653 section contents zeroed. Avoid any special processing. */
1654 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1655 rel->r_info = 0;
1656 rel->r_addend = 0;
1657 continue;
1658 }
1659
1660 if (info->relocatable)
1661 continue;
1662
1663 /* FIXME: We should use the addend, but the COFF relocations don't. */
1664 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1665 input_section,
1666 contents, rel->r_offset,
1667 relocation, rel->r_addend,
1668 info, sec, h == NULL);
1669
1670 if (r != bfd_reloc_ok)
1671 {
1672 const char * name;
1673 const char * msg = NULL;
1674
1675 if (h != NULL)
1676 name = h->root.root.string;
1677 else
1678 {
1679 name = (bfd_elf_string_from_elf_section
1680 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1681 if (name == NULL || *name == '\0')
1682 name = bfd_section_name (input_bfd, sec);
1683 }
1684
1685 switch (r)
1686 {
1687 case bfd_reloc_overflow:
1688 if (! ((*info->callbacks->reloc_overflow)
1689 (info, (h ? &h->root : NULL), name, howto->name,
1690 (bfd_vma) 0, input_bfd, input_section,
1691 rel->r_offset)))
1692 return FALSE;
1693 break;
1694
1695 case bfd_reloc_undefined:
1696 if (! ((*info->callbacks->undefined_symbol)
1697 (info, name, input_bfd, input_section,
1698 rel->r_offset, TRUE)))
1699 return FALSE;
1700 break;
1701
1702 case bfd_reloc_outofrange:
1703 msg = _("internal error: out of range error");
1704 goto common_error;
1705
1706 case bfd_reloc_notsupported:
1707 msg = _("internal error: unsupported relocation error");
1708 goto common_error;
1709
1710 case bfd_reloc_dangerous:
1711 msg = _("internal error: dangerous relocation");
1712 goto common_error;
1713
1714 case bfd_reloc_gp_not_found:
1715 msg = _("could not locate special linker symbol __gp");
1716 goto common_error;
1717
1718 case bfd_reloc_ep_not_found:
1719 msg = _("could not locate special linker symbol __ep");
1720 goto common_error;
1721
1722 case bfd_reloc_ctbp_not_found:
1723 msg = _("could not locate special linker symbol __ctbp");
1724 goto common_error;
1725
1726 default:
1727 msg = _("internal error: unknown error");
1728 /* fall through */
1729
1730 common_error:
1731 if (!((*info->callbacks->warning)
1732 (info, msg, name, input_bfd, input_section,
1733 rel->r_offset)))
1734 return FALSE;
1735 break;
1736 }
1737 }
1738 }
1739
1740 return TRUE;
1741 }
1742
1743 static asection *
1744 v850_elf_gc_mark_hook (asection *sec,
1745 struct bfd_link_info *info,
1746 Elf_Internal_Rela *rel,
1747 struct elf_link_hash_entry *h,
1748 Elf_Internal_Sym *sym)
1749 {
1750 if (h != NULL)
1751 switch (ELF32_R_TYPE (rel->r_info))
1752 {
1753 case R_V850_GNU_VTINHERIT:
1754 case R_V850_GNU_VTENTRY:
1755 return NULL;
1756 }
1757
1758 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1759 }
1760
1761 /* Set the right machine number. */
1762
1763 static bfd_boolean
1764 v850_elf_object_p (bfd *abfd)
1765 {
1766 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1767 {
1768 default:
1769 case E_V850_ARCH:
1770 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1771 break;
1772 case E_V850E_ARCH:
1773 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1774 break;
1775 case E_V850E1_ARCH:
1776 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1777 break;
1778 }
1779 return TRUE;
1780 }
1781
1782 /* Store the machine number in the flags field. */
1783
1784 static void
1785 v850_elf_final_write_processing (bfd *abfd,
1786 bfd_boolean linker ATTRIBUTE_UNUSED)
1787 {
1788 unsigned long val;
1789
1790 switch (bfd_get_mach (abfd))
1791 {
1792 default:
1793 case bfd_mach_v850: val = E_V850_ARCH; break;
1794 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1795 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
1796 }
1797
1798 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1799 elf_elfheader (abfd)->e_flags |= val;
1800 }
1801
1802 /* Function to keep V850 specific file flags. */
1803
1804 static bfd_boolean
1805 v850_elf_set_private_flags (bfd *abfd, flagword flags)
1806 {
1807 BFD_ASSERT (!elf_flags_init (abfd)
1808 || elf_elfheader (abfd)->e_flags == flags);
1809
1810 elf_elfheader (abfd)->e_flags = flags;
1811 elf_flags_init (abfd) = TRUE;
1812 return TRUE;
1813 }
1814
1815 /* Merge backend specific data from an object file
1816 to the output object file when linking. */
1817
1818 static bfd_boolean
1819 v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
1820 {
1821 flagword out_flags;
1822 flagword in_flags;
1823
1824 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1825 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1826 return TRUE;
1827
1828 in_flags = elf_elfheader (ibfd)->e_flags;
1829 out_flags = elf_elfheader (obfd)->e_flags;
1830
1831 if (! elf_flags_init (obfd))
1832 {
1833 /* If the input is the default architecture then do not
1834 bother setting the flags for the output architecture,
1835 instead allow future merges to do this. If no future
1836 merges ever set these flags then they will retain their
1837 unitialised values, which surprise surprise, correspond
1838 to the default values. */
1839 if (bfd_get_arch_info (ibfd)->the_default)
1840 return TRUE;
1841
1842 elf_flags_init (obfd) = TRUE;
1843 elf_elfheader (obfd)->e_flags = in_flags;
1844
1845 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1846 && bfd_get_arch_info (obfd)->the_default)
1847 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1848
1849 return TRUE;
1850 }
1851
1852 /* Check flag compatibility. */
1853 if (in_flags == out_flags)
1854 return TRUE;
1855
1856 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1857 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1858 {
1859 /* Allow v850e1 binaries to be linked with v850e binaries.
1860 Set the output binary to v850e. */
1861 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1862 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1863 return TRUE;
1864
1865 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1866 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1867 {
1868 elf_elfheader (obfd)->e_flags =
1869 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1870 return TRUE;
1871 }
1872
1873 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
1874 ibfd);
1875 }
1876
1877 return TRUE;
1878 }
1879
1880 /* Display the flags field. */
1881
1882 static bfd_boolean
1883 v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
1884 {
1885 FILE * file = (FILE *) ptr;
1886
1887 BFD_ASSERT (abfd != NULL && ptr != NULL);
1888
1889 _bfd_elf_print_private_bfd_data (abfd, ptr);
1890
1891 /* xgettext:c-format */
1892 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1893
1894 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1895 {
1896 default:
1897 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1898 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1899 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
1900 }
1901
1902 fputc ('\n', file);
1903
1904 return TRUE;
1905 }
1906
1907 /* V850 ELF uses four common sections. One is the usual one, and the
1908 others are for (small) objects in one of the special data areas:
1909 small, tiny and zero. All the objects are kept together, and then
1910 referenced via the gp register, the ep register or the r0 register
1911 respectively, which yields smaller, faster assembler code. This
1912 approach is copied from elf32-mips.c. */
1913
1914 static asection v850_elf_scom_section;
1915 static asymbol v850_elf_scom_symbol;
1916 static asymbol * v850_elf_scom_symbol_ptr;
1917 static asection v850_elf_tcom_section;
1918 static asymbol v850_elf_tcom_symbol;
1919 static asymbol * v850_elf_tcom_symbol_ptr;
1920 static asection v850_elf_zcom_section;
1921 static asymbol v850_elf_zcom_symbol;
1922 static asymbol * v850_elf_zcom_symbol_ptr;
1923
1924 /* Given a BFD section, try to locate the
1925 corresponding ELF section index. */
1926
1927 static bfd_boolean
1928 v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1929 asection *sec,
1930 int *retval)
1931 {
1932 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1933 *retval = SHN_V850_SCOMMON;
1934 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
1935 *retval = SHN_V850_TCOMMON;
1936 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
1937 *retval = SHN_V850_ZCOMMON;
1938 else
1939 return FALSE;
1940
1941 return TRUE;
1942 }
1943
1944 /* Handle the special V850 section numbers that a symbol may use. */
1945
1946 static void
1947 v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
1948 {
1949 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
1950 unsigned int indx;
1951
1952 indx = elfsym->internal_elf_sym.st_shndx;
1953
1954 /* If the section index is an "ordinary" index, then it may
1955 refer to a v850 specific section created by the assembler.
1956 Check the section's type and change the index it matches.
1957
1958 FIXME: Should we alter the st_shndx field as well ? */
1959
1960 if (indx < elf_numsections (abfd))
1961 switch (elf_elfsections(abfd)[indx]->sh_type)
1962 {
1963 case SHT_V850_SCOMMON:
1964 indx = SHN_V850_SCOMMON;
1965 break;
1966
1967 case SHT_V850_TCOMMON:
1968 indx = SHN_V850_TCOMMON;
1969 break;
1970
1971 case SHT_V850_ZCOMMON:
1972 indx = SHN_V850_ZCOMMON;
1973 break;
1974
1975 default:
1976 break;
1977 }
1978
1979 switch (indx)
1980 {
1981 case SHN_V850_SCOMMON:
1982 if (v850_elf_scom_section.name == NULL)
1983 {
1984 /* Initialize the small common section. */
1985 v850_elf_scom_section.name = ".scommon";
1986 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
1987 v850_elf_scom_section.output_section = & v850_elf_scom_section;
1988 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
1989 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
1990 v850_elf_scom_symbol.name = ".scommon";
1991 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
1992 v850_elf_scom_symbol.section = & v850_elf_scom_section;
1993 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
1994 }
1995 asym->section = & v850_elf_scom_section;
1996 asym->value = elfsym->internal_elf_sym.st_size;
1997 break;
1998
1999 case SHN_V850_TCOMMON:
2000 if (v850_elf_tcom_section.name == NULL)
2001 {
2002 /* Initialize the tcommon section. */
2003 v850_elf_tcom_section.name = ".tcommon";
2004 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2005 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2006 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2007 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2008 v850_elf_tcom_symbol.name = ".tcommon";
2009 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2010 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2011 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2012 }
2013 asym->section = & v850_elf_tcom_section;
2014 asym->value = elfsym->internal_elf_sym.st_size;
2015 break;
2016
2017 case SHN_V850_ZCOMMON:
2018 if (v850_elf_zcom_section.name == NULL)
2019 {
2020 /* Initialize the zcommon section. */
2021 v850_elf_zcom_section.name = ".zcommon";
2022 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2023 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2024 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2025 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2026 v850_elf_zcom_symbol.name = ".zcommon";
2027 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2028 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2029 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2030 }
2031 asym->section = & v850_elf_zcom_section;
2032 asym->value = elfsym->internal_elf_sym.st_size;
2033 break;
2034 }
2035 }
2036
2037 /* Hook called by the linker routine which adds symbols from an object
2038 file. We must handle the special v850 section numbers here. */
2039
2040 static bfd_boolean
2041 v850_elf_add_symbol_hook (bfd *abfd,
2042 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2043 Elf_Internal_Sym *sym,
2044 const char **namep ATTRIBUTE_UNUSED,
2045 flagword *flagsp ATTRIBUTE_UNUSED,
2046 asection **secp,
2047 bfd_vma *valp)
2048 {
2049 unsigned int indx = sym->st_shndx;
2050
2051 /* If the section index is an "ordinary" index, then it may
2052 refer to a v850 specific section created by the assembler.
2053 Check the section's type and change the index it matches.
2054
2055 FIXME: Should we alter the st_shndx field as well ? */
2056
2057 if (indx < elf_numsections (abfd))
2058 switch (elf_elfsections(abfd)[indx]->sh_type)
2059 {
2060 case SHT_V850_SCOMMON:
2061 indx = SHN_V850_SCOMMON;
2062 break;
2063
2064 case SHT_V850_TCOMMON:
2065 indx = SHN_V850_TCOMMON;
2066 break;
2067
2068 case SHT_V850_ZCOMMON:
2069 indx = SHN_V850_ZCOMMON;
2070 break;
2071
2072 default:
2073 break;
2074 }
2075
2076 switch (indx)
2077 {
2078 case SHN_V850_SCOMMON:
2079 *secp = bfd_make_section_old_way (abfd, ".scommon");
2080 (*secp)->flags |= SEC_IS_COMMON;
2081 *valp = sym->st_size;
2082 break;
2083
2084 case SHN_V850_TCOMMON:
2085 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2086 (*secp)->flags |= SEC_IS_COMMON;
2087 *valp = sym->st_size;
2088 break;
2089
2090 case SHN_V850_ZCOMMON:
2091 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2092 (*secp)->flags |= SEC_IS_COMMON;
2093 *valp = sym->st_size;
2094 break;
2095 }
2096
2097 return TRUE;
2098 }
2099
2100 static bfd_boolean
2101 v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2102 const char *name ATTRIBUTE_UNUSED,
2103 Elf_Internal_Sym *sym,
2104 asection *input_sec,
2105 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2106 {
2107 /* If we see a common symbol, which implies a relocatable link, then
2108 if a symbol was in a special common section in an input file, mark
2109 it as a special common in the output file. */
2110
2111 if (sym->st_shndx == SHN_COMMON)
2112 {
2113 if (strcmp (input_sec->name, ".scommon") == 0)
2114 sym->st_shndx = SHN_V850_SCOMMON;
2115 else if (strcmp (input_sec->name, ".tcommon") == 0)
2116 sym->st_shndx = SHN_V850_TCOMMON;
2117 else if (strcmp (input_sec->name, ".zcommon") == 0)
2118 sym->st_shndx = SHN_V850_ZCOMMON;
2119 }
2120
2121 /* The price we pay for using h->other unused bits as flags in the
2122 linker is cleaning up after ourselves. */
2123
2124 sym->st_other &= ~(V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA
2125 | V850_OTHER_ERROR);
2126
2127 return TRUE;
2128 }
2129
2130 static bfd_boolean
2131 v850_elf_section_from_shdr (bfd *abfd,
2132 Elf_Internal_Shdr *hdr,
2133 const char *name,
2134 int shindex)
2135 {
2136 /* There ought to be a place to keep ELF backend specific flags, but
2137 at the moment there isn't one. We just keep track of the
2138 sections by their name, instead. */
2139
2140 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2141 return FALSE;
2142
2143 switch (hdr->sh_type)
2144 {
2145 case SHT_V850_SCOMMON:
2146 case SHT_V850_TCOMMON:
2147 case SHT_V850_ZCOMMON:
2148 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2149 (bfd_get_section_flags (abfd,
2150 hdr->bfd_section)
2151 | SEC_IS_COMMON)))
2152 return FALSE;
2153 }
2154
2155 return TRUE;
2156 }
2157
2158 /* Set the correct type for a V850 ELF section. We do this
2159 by the section name, which is a hack, but ought to work. */
2160
2161 static bfd_boolean
2162 v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2163 Elf_Internal_Shdr *hdr,
2164 asection *sec)
2165 {
2166 const char * name;
2167
2168 name = bfd_get_section_name (abfd, sec);
2169
2170 if (strcmp (name, ".scommon") == 0)
2171 hdr->sh_type = SHT_V850_SCOMMON;
2172 else if (strcmp (name, ".tcommon") == 0)
2173 hdr->sh_type = SHT_V850_TCOMMON;
2174 else if (strcmp (name, ".zcommon") == 0)
2175 hdr->sh_type = SHT_V850_ZCOMMON;
2176
2177 return TRUE;
2178 }
2179
2180 /* Delete some bytes from a section while relaxing. */
2181
2182 static bfd_boolean
2183 v850_elf_relax_delete_bytes (bfd *abfd,
2184 asection *sec,
2185 bfd_vma addr,
2186 bfd_vma toaddr,
2187 int count)
2188 {
2189 Elf_Internal_Shdr *symtab_hdr;
2190 Elf32_External_Sym *extsyms;
2191 Elf32_External_Sym *esym;
2192 Elf32_External_Sym *esymend;
2193 int index;
2194 unsigned int sec_shndx;
2195 bfd_byte *contents;
2196 Elf_Internal_Rela *irel;
2197 Elf_Internal_Rela *irelend;
2198 struct elf_link_hash_entry *sym_hash;
2199 Elf_Internal_Shdr *shndx_hdr;
2200 Elf_External_Sym_Shndx *shndx;
2201
2202 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2203 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2204
2205 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2206
2207 contents = elf_section_data (sec)->this_hdr.contents;
2208
2209 /* The deletion must stop at the next ALIGN reloc for an alignment
2210 power larger than the number of bytes we are deleting. */
2211
2212 /* Actually delete the bytes. */
2213 #if (DEBUG_RELAX & 2)
2214 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2215 sec->name, addr, toaddr, count );
2216 #endif
2217 memmove (contents + addr, contents + addr + count,
2218 toaddr - addr - count);
2219 memset (contents + toaddr-count, 0, count);
2220
2221 /* Adjust all the relocs. */
2222 irel = elf_section_data (sec)->relocs;
2223 irelend = irel + sec->reloc_count;
2224 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2225 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2226
2227 for (; irel < irelend; irel++)
2228 {
2229 bfd_vma raddr, paddr, symval;
2230 Elf_Internal_Sym isym;
2231
2232 /* Get the new reloc address. */
2233 raddr = irel->r_offset;
2234 if ((raddr >= (addr + count) && raddr < toaddr))
2235 irel->r_offset -= count;
2236
2237 if (raddr >= addr && raddr < addr + count)
2238 {
2239 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2240 (int) R_V850_NONE);
2241 continue;
2242 }
2243
2244 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2245 continue;
2246
2247 bfd_elf32_swap_symbol_in (abfd,
2248 extsyms + ELF32_R_SYM (irel->r_info),
2249 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2250 & isym);
2251
2252 if (isym.st_shndx != sec_shndx)
2253 continue;
2254
2255 /* Get the value of the symbol referred to by the reloc. */
2256 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2257 {
2258 symval = isym.st_value;
2259 #if (DEBUG_RELAX & 2)
2260 {
2261 char * name = bfd_elf_string_from_elf_section
2262 (abfd, symtab_hdr->sh_link, isym.st_name);
2263 fprintf (stderr,
2264 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2265 sec->name, name, isym.st_name,
2266 sec->output_section->vma, sec->output_offset,
2267 isym.st_value, irel->r_addend);
2268 }
2269 #endif
2270 }
2271 else
2272 {
2273 unsigned long indx;
2274 struct elf_link_hash_entry * h;
2275
2276 /* An external symbol. */
2277 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2278
2279 h = elf_sym_hashes (abfd) [indx];
2280 BFD_ASSERT (h != NULL);
2281
2282 symval = h->root.u.def.value;
2283 #if (DEBUG_RELAX & 2)
2284 fprintf (stderr,
2285 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2286 sec->name, h->root.root.string, h->root.u.def.value,
2287 sec->output_section->vma, sec->output_offset, irel->r_addend);
2288 #endif
2289 }
2290
2291 paddr = symval + irel->r_addend;
2292
2293 if ( (symval >= addr + count && symval < toaddr)
2294 && (paddr < addr + count || paddr >= toaddr))
2295 irel->r_addend += count;
2296 else if ( (symval < addr + count || symval >= toaddr)
2297 && (paddr >= addr + count && paddr < toaddr))
2298 irel->r_addend -= count;
2299 }
2300
2301 /* Adjust the local symbols defined in this section. */
2302 esym = extsyms;
2303 esymend = esym + symtab_hdr->sh_info;
2304
2305 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2306 {
2307 Elf_Internal_Sym isym;
2308
2309 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2310
2311 if (isym.st_shndx == sec_shndx
2312 && isym.st_value >= addr + count
2313 && isym.st_value < toaddr)
2314 {
2315 isym.st_value -= count;
2316
2317 if (isym.st_value + isym.st_size >= toaddr)
2318 isym.st_size += count;
2319
2320 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2321 }
2322 else if (isym.st_shndx == sec_shndx
2323 && isym.st_value < addr + count)
2324 {
2325 if (isym.st_value+isym.st_size >= addr + count
2326 && isym.st_value+isym.st_size < toaddr)
2327 isym.st_size -= count;
2328
2329 if (isym.st_value >= addr
2330 && isym.st_value < addr + count)
2331 isym.st_value = addr;
2332
2333 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2334 }
2335 }
2336
2337 /* Now adjust the global symbols defined in this section. */
2338 esym = extsyms + symtab_hdr->sh_info;
2339 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2340
2341 for (index = 0; esym < esymend; esym ++, index ++)
2342 {
2343 Elf_Internal_Sym isym;
2344
2345 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2346 sym_hash = elf_sym_hashes (abfd) [index];
2347
2348 if (isym.st_shndx == sec_shndx
2349 && ((sym_hash)->root.type == bfd_link_hash_defined
2350 || (sym_hash)->root.type == bfd_link_hash_defweak)
2351 && (sym_hash)->root.u.def.section == sec
2352 && (sym_hash)->root.u.def.value >= addr + count
2353 && (sym_hash)->root.u.def.value < toaddr)
2354 {
2355 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2356 {
2357 isym.st_size += count;
2358 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2359 }
2360
2361 (sym_hash)->root.u.def.value -= count;
2362 }
2363 else if (isym.st_shndx == sec_shndx
2364 && ((sym_hash)->root.type == bfd_link_hash_defined
2365 || (sym_hash)->root.type == bfd_link_hash_defweak)
2366 && (sym_hash)->root.u.def.section == sec
2367 && (sym_hash)->root.u.def.value < addr + count)
2368 {
2369 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2370 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2371 isym.st_size -= count;
2372
2373 if ((sym_hash)->root.u.def.value >= addr
2374 && (sym_hash)->root.u.def.value < addr + count)
2375 (sym_hash)->root.u.def.value = addr;
2376
2377 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2378 }
2379
2380 if (shndx)
2381 ++ shndx;
2382 }
2383
2384 return TRUE;
2385 }
2386
2387 #define NOP_OPCODE (0x0000)
2388 #define MOVHI 0x0640 /* 4byte */
2389 #define MOVHI_MASK 0x07e0
2390 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2391 #define MOVHI_R2(insn) ((insn) >> 11)
2392 #define MOVEA 0x0620 /* 2byte */
2393 #define MOVEA_MASK 0x07e0
2394 #define MOVEA_R1(insn) ((insn) & 0x1f)
2395 #define MOVEA_R2(insn) ((insn) >> 11)
2396 #define JARL_4 0x00040780 /* 4byte */
2397 #define JARL_4_MASK 0xFFFF07FF
2398 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2399 #define ADD_I 0x0240 /* 2byte */
2400 #define ADD_I_MASK 0x07e0
2401 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2402 #define ADD_R2(insn) ((insn) >> 11)
2403 #define JMP_R 0x0060 /* 2byte */
2404 #define JMP_R_MASK 0xFFE0
2405 #define JMP_R1(insn) ((insn) & 0x1f)
2406
2407 static bfd_boolean
2408 v850_elf_relax_section (bfd *abfd,
2409 asection *sec,
2410 struct bfd_link_info *link_info,
2411 bfd_boolean *again)
2412 {
2413 Elf_Internal_Shdr *symtab_hdr;
2414 Elf_Internal_Rela *internal_relocs;
2415 Elf_Internal_Rela *irel;
2416 Elf_Internal_Rela *irelend;
2417 Elf_Internal_Rela *irelalign = NULL;
2418 Elf_Internal_Sym *isymbuf = NULL;
2419 bfd_byte *contents = NULL;
2420 bfd_vma addr = 0;
2421 bfd_vma toaddr;
2422 int align_pad_size = 0;
2423 bfd_boolean result = TRUE;
2424
2425 *again = FALSE;
2426
2427 if (link_info->relocatable
2428 || (sec->flags & SEC_RELOC) == 0
2429 || sec->reloc_count == 0)
2430 return TRUE;
2431
2432 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2433
2434 internal_relocs = (_bfd_elf_link_read_relocs
2435 (abfd, sec, NULL, NULL, link_info->keep_memory));
2436 if (internal_relocs == NULL)
2437 goto error_return;
2438
2439 irelend = internal_relocs + sec->reloc_count;
2440
2441 while (addr < sec->size)
2442 {
2443 toaddr = sec->size;
2444
2445 for (irel = internal_relocs; irel < irelend; irel ++)
2446 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2447 && irel->r_offset > addr
2448 && irel->r_offset < toaddr)
2449 toaddr = irel->r_offset;
2450
2451 #ifdef DEBUG_RELAX
2452 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2453 addr, toaddr, align_pad_size);
2454 #endif
2455 if (irelalign)
2456 {
2457 bfd_vma alignto;
2458 bfd_vma alignmoveto;
2459
2460 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2461 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2462
2463 if (alignmoveto < alignto)
2464 {
2465 unsigned int i;
2466
2467 align_pad_size = alignto - alignmoveto;
2468 #ifdef DEBUG_RELAX
2469 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2470 alignmoveto, toaddr, align_pad_size);
2471 #endif
2472 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2473 toaddr, align_pad_size))
2474 goto error_return;
2475
2476 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2477 (i + 1) < toaddr; i += 2)
2478 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2479
2480 addr = alignmoveto;
2481 }
2482 else
2483 align_pad_size = 0;
2484 }
2485
2486 for (irel = internal_relocs; irel < irelend; irel++)
2487 {
2488 bfd_vma laddr;
2489 bfd_vma addend;
2490 bfd_vma symval;
2491 int insn[5];
2492 int no_match = -1;
2493 Elf_Internal_Rela *hi_irelfn;
2494 Elf_Internal_Rela *lo_irelfn;
2495 Elf_Internal_Rela *irelcall;
2496 bfd_signed_vma foff;
2497
2498 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2499 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2500 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2501 continue;
2502
2503 #ifdef DEBUG_RELAX
2504 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2505 irel->r_info,
2506 irel->r_offset,
2507 irel->r_addend );
2508 #endif
2509
2510 /* Get the section contents. */
2511 if (contents == NULL)
2512 {
2513 if (elf_section_data (sec)->this_hdr.contents != NULL)
2514 contents = elf_section_data (sec)->this_hdr.contents;
2515 else
2516 {
2517 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
2518 goto error_return;
2519 }
2520 }
2521
2522 /* Read this BFD's local symbols if we haven't done so already. */
2523 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2524 {
2525 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2526 if (isymbuf == NULL)
2527 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2528 symtab_hdr->sh_info, 0,
2529 NULL, NULL, NULL);
2530 if (isymbuf == NULL)
2531 goto error_return;
2532 }
2533
2534 laddr = irel->r_offset;
2535
2536 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2537 {
2538 /* Check code for -mlong-calls output. */
2539 if (laddr + 16 <= (bfd_vma) sec->size)
2540 {
2541 insn[0] = bfd_get_16 (abfd, contents + laddr);
2542 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2543 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2544 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2545 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2546
2547 if ((insn[0] & MOVHI_MASK) != MOVHI
2548 || MOVHI_R1 (insn[0]) != 0)
2549 no_match = 0;
2550
2551 if (no_match < 0
2552 && ((insn[1] & MOVEA_MASK) != MOVEA
2553 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2554 no_match = 1;
2555
2556 if (no_match < 0
2557 && (insn[2] & JARL_4_MASK) != JARL_4)
2558 no_match = 2;
2559
2560 if (no_match < 0
2561 && ((insn[3] & ADD_I_MASK) != ADD_I
2562 || ADD_I5 (insn[3]) != 4
2563 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2564 no_match = 3;
2565
2566 if (no_match < 0
2567 && ((insn[4] & JMP_R_MASK) != JMP_R
2568 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2569 no_match = 4;
2570 }
2571 else
2572 {
2573 ((*_bfd_error_handler)
2574 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2575 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2576
2577 continue;
2578 }
2579
2580 if (no_match >= 0)
2581 {
2582 ((*_bfd_error_handler)
2583 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2584 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2585
2586 continue;
2587 }
2588
2589 /* Get the reloc for the address from which the register is
2590 being loaded. This reloc will tell us which function is
2591 actually being called. */
2592 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2593 if (hi_irelfn->r_offset == laddr + 2
2594 && ELF32_R_TYPE (hi_irelfn->r_info)
2595 == (int) R_V850_HI16_S)
2596 break;
2597
2598 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2599 if (lo_irelfn->r_offset == laddr + 6
2600 && ELF32_R_TYPE (lo_irelfn->r_info)
2601 == (int) R_V850_LO16)
2602 break;
2603
2604 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2605 if (irelcall->r_offset == laddr + 8
2606 && ELF32_R_TYPE (irelcall->r_info)
2607 == (int) R_V850_22_PCREL)
2608 break;
2609
2610 if ( hi_irelfn == irelend
2611 || lo_irelfn == irelend
2612 || irelcall == irelend)
2613 {
2614 ((*_bfd_error_handler)
2615 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2616 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2617
2618 continue;
2619 }
2620
2621 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2622 {
2623 Elf_Internal_Sym * isym;
2624
2625 /* A local symbol. */
2626 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
2627
2628 symval = isym->st_value;
2629 }
2630 else
2631 {
2632 unsigned long indx;
2633 struct elf_link_hash_entry * h;
2634
2635 /* An external symbol. */
2636 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2637 h = elf_sym_hashes (abfd)[indx];
2638 BFD_ASSERT (h != NULL);
2639
2640 if ( h->root.type != bfd_link_hash_defined
2641 && h->root.type != bfd_link_hash_defweak)
2642 /* This appears to be a reference to an undefined
2643 symbol. Just ignore it--it will be caught by the
2644 regular reloc processing. */
2645 continue;
2646
2647 symval = h->root.u.def.value;
2648 }
2649
2650 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2651 {
2652 ((*_bfd_error_handler)
2653 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2654 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2655
2656 continue;
2657 }
2658
2659 /* Get the value of the symbol referred to by the reloc. */
2660 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2661 {
2662 Elf_Internal_Sym *isym;
2663 asection *sym_sec;
2664
2665 /* A local symbol. */
2666 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2667
2668 if (isym->st_shndx == SHN_UNDEF)
2669 sym_sec = bfd_und_section_ptr;
2670 else if (isym->st_shndx == SHN_ABS)
2671 sym_sec = bfd_abs_section_ptr;
2672 else if (isym->st_shndx == SHN_COMMON)
2673 sym_sec = bfd_com_section_ptr;
2674 else
2675 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2676 symval = (isym->st_value
2677 + sym_sec->output_section->vma
2678 + sym_sec->output_offset);
2679 }
2680 else
2681 {
2682 unsigned long indx;
2683 struct elf_link_hash_entry *h;
2684
2685 /* An external symbol. */
2686 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
2687 h = elf_sym_hashes (abfd)[indx];
2688 BFD_ASSERT (h != NULL);
2689
2690 if ( h->root.type != bfd_link_hash_defined
2691 && h->root.type != bfd_link_hash_defweak)
2692 /* This appears to be a reference to an undefined
2693 symbol. Just ignore it--it will be caught by the
2694 regular reloc processing. */
2695 continue;
2696
2697 symval = (h->root.u.def.value
2698 + h->root.u.def.section->output_section->vma
2699 + h->root.u.def.section->output_offset);
2700 }
2701
2702 addend = irel->r_addend;
2703
2704 foff = (symval + addend
2705 - (irel->r_offset
2706 + sec->output_section->vma
2707 + sec->output_offset
2708 + 4));
2709 #ifdef DEBUG_RELAX
2710 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2711 irel->r_offset,
2712 (irel->r_offset
2713 + sec->output_section->vma
2714 + sec->output_offset),
2715 symval, addend, foff);
2716 #endif
2717
2718 if (foff < -0x100000 || foff >= 0x100000)
2719 /* After all that work, we can't shorten this function call. */
2720 continue;
2721
2722 /* For simplicity of coding, we are going to modify the section
2723 contents, the section relocs, and the BFD symbol table. We
2724 must tell the rest of the code not to free up this
2725 information. It would be possible to instead create a table
2726 of changes which have to be made, as is done in coff-mips.c;
2727 that would be more work, but would require less memory when
2728 the linker is run. */
2729 elf_section_data (sec)->relocs = internal_relocs;
2730 elf_section_data (sec)->this_hdr.contents = contents;
2731 symtab_hdr->contents = (bfd_byte *) isymbuf;
2732
2733 /* Replace the long call with a jarl. */
2734 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2735
2736 addend = 0;
2737
2738 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2739 /* If this needs to be changed because of future relaxing,
2740 it will be handled here like other internal IND12W
2741 relocs. */
2742 bfd_put_32 (abfd,
2743 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2744 contents + irel->r_offset);
2745 else
2746 /* We can't fully resolve this yet, because the external
2747 symbol value may be changed by future relaxing.
2748 We let the final link phase handle it. */
2749 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2750 contents + irel->r_offset);
2751
2752 hi_irelfn->r_info =
2753 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2754 lo_irelfn->r_info =
2755 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2756 irelcall->r_info =
2757 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2758
2759 if (! v850_elf_relax_delete_bytes (abfd, sec,
2760 irel->r_offset + 4, toaddr, 12))
2761 goto error_return;
2762
2763 align_pad_size += 12;
2764 }
2765 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2766 {
2767 /* Check code for -mlong-jumps output. */
2768 if (laddr + 10 <= (bfd_vma) sec->size)
2769 {
2770 insn[0] = bfd_get_16 (abfd, contents + laddr);
2771 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2772 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2773
2774 if ((insn[0] & MOVHI_MASK) != MOVHI
2775 || MOVHI_R1 (insn[0]) != 0)
2776 no_match = 0;
2777
2778 if (no_match < 0
2779 && ((insn[1] & MOVEA_MASK) != MOVEA
2780 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2781 no_match = 1;
2782
2783 if (no_match < 0
2784 && ((insn[2] & JMP_R_MASK) != JMP_R
2785 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2786 no_match = 4;
2787 }
2788 else
2789 {
2790 ((*_bfd_error_handler)
2791 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2792 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2793
2794 continue;
2795 }
2796
2797 if (no_match >= 0)
2798 {
2799 ((*_bfd_error_handler)
2800 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2801 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2802
2803 continue;
2804 }
2805
2806 /* Get the reloc for the address from which the register is
2807 being loaded. This reloc will tell us which function is
2808 actually being called. */
2809 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2810 if (hi_irelfn->r_offset == laddr + 2
2811 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2812 break;
2813
2814 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2815 if (lo_irelfn->r_offset == laddr + 6
2816 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2817 break;
2818
2819 if ( hi_irelfn == irelend
2820 || lo_irelfn == irelend)
2821 {
2822 ((*_bfd_error_handler)
2823 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2824 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2825
2826 continue;
2827 }
2828
2829 /* Get the value of the symbol referred to by the reloc. */
2830 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2831 {
2832 Elf_Internal_Sym * isym;
2833 asection * sym_sec;
2834
2835 /* A local symbol. */
2836 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2837
2838 if (isym->st_shndx == SHN_UNDEF)
2839 sym_sec = bfd_und_section_ptr;
2840 else if (isym->st_shndx == SHN_ABS)
2841 sym_sec = bfd_abs_section_ptr;
2842 else if (isym->st_shndx == SHN_COMMON)
2843 sym_sec = bfd_com_section_ptr;
2844 else
2845 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2846 symval = (isym->st_value
2847 + sym_sec->output_section->vma
2848 + sym_sec->output_offset);
2849 #ifdef DEBUG_RELAX
2850 {
2851 char * name = bfd_elf_string_from_elf_section
2852 (abfd, symtab_hdr->sh_link, isym->st_name);
2853
2854 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2855 sym_sec->name, name, isym->st_name,
2856 sym_sec->output_section->vma,
2857 sym_sec->output_offset,
2858 isym->st_value, irel->r_addend);
2859 }
2860 #endif
2861 }
2862 else
2863 {
2864 unsigned long indx;
2865 struct elf_link_hash_entry * h;
2866
2867 /* An external symbol. */
2868 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2869 h = elf_sym_hashes (abfd)[indx];
2870 BFD_ASSERT (h != NULL);
2871
2872 if ( h->root.type != bfd_link_hash_defined
2873 && h->root.type != bfd_link_hash_defweak)
2874 /* This appears to be a reference to an undefined
2875 symbol. Just ignore it--it will be caught by the
2876 regular reloc processing. */
2877 continue;
2878
2879 symval = (h->root.u.def.value
2880 + h->root.u.def.section->output_section->vma
2881 + h->root.u.def.section->output_offset);
2882 #ifdef DEBUG_RELAX
2883 fprintf (stderr,
2884 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2885 sec->name, h->root.root.string, h->root.u.def.value,
2886 sec->output_section->vma, sec->output_offset, irel->r_addend);
2887 #endif
2888 }
2889
2890 addend = irel->r_addend;
2891
2892 foff = (symval + addend
2893 - (irel->r_offset
2894 + sec->output_section->vma
2895 + sec->output_offset
2896 + 4));
2897 #ifdef DEBUG_RELAX
2898 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2899 irel->r_offset,
2900 (irel->r_offset
2901 + sec->output_section->vma
2902 + sec->output_offset),
2903 symval, addend, foff);
2904 #endif
2905 if (foff < -0x100000 || foff >= 0x100000)
2906 /* After all that work, we can't shorten this function call. */
2907 continue;
2908
2909 /* For simplicity of coding, we are going to modify the section
2910 contents, the section relocs, and the BFD symbol table. We
2911 must tell the rest of the code not to free up this
2912 information. It would be possible to instead create a table
2913 of changes which have to be made, as is done in coff-mips.c;
2914 that would be more work, but would require less memory when
2915 the linker is run. */
2916 elf_section_data (sec)->relocs = internal_relocs;
2917 elf_section_data (sec)->this_hdr.contents = contents;
2918 symtab_hdr->contents = (bfd_byte *) isymbuf;
2919
2920 if (foff < -0x100 || foff >= 0x100)
2921 {
2922 /* Replace the long jump with a jr. */
2923
2924 irel->r_info =
2925 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
2926
2927 irel->r_addend = addend;
2928 addend = 0;
2929
2930 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2931 /* If this needs to be changed because of future relaxing,
2932 it will be handled here like other internal IND12W
2933 relocs. */
2934 bfd_put_32 (abfd,
2935 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
2936 contents + irel->r_offset);
2937 else
2938 /* We can't fully resolve this yet, because the external
2939 symbol value may be changed by future relaxing.
2940 We let the final link phase handle it. */
2941 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
2942
2943 hi_irelfn->r_info =
2944 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2945 lo_irelfn->r_info =
2946 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2947 if (!v850_elf_relax_delete_bytes (abfd, sec,
2948 irel->r_offset + 4, toaddr, 6))
2949 goto error_return;
2950
2951 align_pad_size += 6;
2952 }
2953 else
2954 {
2955 /* Replace the long jump with a br. */
2956
2957 irel->r_info =
2958 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
2959
2960 irel->r_addend = addend;
2961 addend = 0;
2962
2963 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2964 /* If this needs to be changed because of future relaxing,
2965 it will be handled here like other internal IND12W
2966 relocs. */
2967 bfd_put_16 (abfd,
2968 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
2969 contents + irel->r_offset);
2970 else
2971 /* We can't fully resolve this yet, because the external
2972 symbol value may be changed by future relaxing.
2973 We let the final link phase handle it. */
2974 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
2975
2976 hi_irelfn->r_info =
2977 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2978 lo_irelfn->r_info =
2979 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2980 if (!v850_elf_relax_delete_bytes (abfd, sec,
2981 irel->r_offset + 2, toaddr, 8))
2982 goto error_return;
2983
2984 align_pad_size += 8;
2985 }
2986 }
2987 }
2988
2989 irelalign = NULL;
2990 for (irel = internal_relocs; irel < irelend; irel++)
2991 {
2992 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2993 && irel->r_offset == toaddr)
2994 {
2995 irel->r_offset -= align_pad_size;
2996
2997 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
2998 irelalign = irel;
2999 }
3000 }
3001
3002 addr = toaddr;
3003 }
3004
3005 if (!irelalign)
3006 {
3007 #ifdef DEBUG_RELAX
3008 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3009 align_pad_size,
3010 sec->size,
3011 sec->size - align_pad_size);
3012 #endif
3013 sec->size -= align_pad_size;
3014 }
3015
3016 finish:
3017 if (internal_relocs != NULL
3018 && elf_section_data (sec)->relocs != internal_relocs)
3019 free (internal_relocs);
3020
3021 if (contents != NULL
3022 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3023 free (contents);
3024
3025 if (isymbuf != NULL
3026 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3027 free (isymbuf);
3028
3029 return result;
3030
3031 error_return:
3032 result = FALSE;
3033 goto finish;
3034 }
3035
3036 static const struct bfd_elf_special_section v850_elf_special_sections[] =
3037 {
3038 { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) },
3039 { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3040 + SHF_EXECINSTR) },
3041 { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3042 + SHF_V850_GPREL) },
3043 { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3044 + SHF_V850_R0REL) },
3045 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3046 + SHF_V850_GPREL) },
3047 { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3048 + SHF_V850_GPREL) },
3049 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3050 + SHF_V850_GPREL) },
3051 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3052 + SHF_V850_EPREL) },
3053 { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3054 + SHF_V850_R0REL) },
3055 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3056 + SHF_V850_EPREL) },
3057 { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3058 + SHF_V850_R0REL) },
3059 { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3060 + SHF_V850_R0REL) },
3061 { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3062 + SHF_V850_R0REL) },
3063 { NULL, 0, 0, 0, 0 }
3064 };
3065 \f
3066 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3067 #define TARGET_LITTLE_NAME "elf32-v850"
3068 #define ELF_ARCH bfd_arch_v850
3069 #define ELF_MACHINE_CODE EM_V850
3070 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3071 #define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */
3072 #define ELF_MAXPAGESIZE 0x1000
3073
3074 #define elf_info_to_howto v850_elf_info_to_howto_rela
3075 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3076
3077 #define elf_backend_check_relocs v850_elf_check_relocs
3078 #define elf_backend_relocate_section v850_elf_relocate_section
3079 #define elf_backend_object_p v850_elf_object_p
3080 #define elf_backend_final_write_processing v850_elf_final_write_processing
3081 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3082 #define elf_backend_symbol_processing v850_elf_symbol_processing
3083 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3084 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3085 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3086 #define elf_backend_fake_sections v850_elf_fake_sections
3087 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3088 #define elf_backend_special_sections v850_elf_special_sections
3089
3090 #define elf_backend_can_gc_sections 1
3091 #define elf_backend_rela_normal 1
3092
3093 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3094 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3095 #define bfd_elf32_bfd_reloc_name_lookup v850_elf_reloc_name_lookup
3096 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3097 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3098 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3099 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3100
3101 #define elf_symbol_leading_char '_'
3102
3103 #include "elf32-target.h"
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