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2006-05-25 Paolo Bonzini <bonzini@gnu.org>
[binutils.git] / bfd / elf32-v850.c
blobe3f1240bf580255ad7103aa4a3ba896717986981
1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006 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 2 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 /* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
23 dependencies. As is the gas & simulator code for the v850. */
24
25 #include "bfd.h"
26 #include "sysdep.h"
27 #include "bfdlink.h"
28 #include "libbfd.h"
29 #include "elf-bfd.h"
30 #include "elf/v850.h"
31 #include "libiberty.h"
32
33 /* Sign-extend a 24-bit number. */
34 #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
35
36 static reloc_howto_type v850_elf_howto_table[];
37
38 /* Look through the relocs for a section during the first phase, and
39 allocate space in the global offset table or procedure linkage
40 table. */
41
42 static bfd_boolean
43 v850_elf_check_relocs (bfd *abfd,
44 struct bfd_link_info *info,
45 asection *sec,
46 const Elf_Internal_Rela *relocs)
47 {
48 bfd_boolean ret = TRUE;
49 bfd *dynobj;
50 Elf_Internal_Shdr *symtab_hdr;
51 struct elf_link_hash_entry **sym_hashes;
52 const Elf_Internal_Rela *rel;
53 const Elf_Internal_Rela *rel_end;
54 asection *sreloc;
55 enum v850_reloc_type r_type;
56 int other = 0;
57 const char *common = NULL;
58
59 if (info->relocatable)
60 return TRUE;
61
62 #ifdef DEBUG
63 _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B",
64 sec, abfd);
65 #endif
66
67 dynobj = elf_hash_table (info)->dynobj;
68 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
69 sym_hashes = elf_sym_hashes (abfd);
70 sreloc = NULL;
71
72 rel_end = relocs + sec->reloc_count;
73 for (rel = relocs; rel < rel_end; rel++)
74 {
75 unsigned long r_symndx;
76 struct elf_link_hash_entry *h;
77
78 r_symndx = ELF32_R_SYM (rel->r_info);
79 if (r_symndx < symtab_hdr->sh_info)
80 h = NULL;
81 else
82 {
83 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
84 while (h->root.type == bfd_link_hash_indirect
85 || h->root.type == bfd_link_hash_warning)
86 h = (struct elf_link_hash_entry *) h->root.u.i.link;
87 }
88
89 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
90 switch (r_type)
91 {
92 default:
93 case R_V850_NONE:
94 case R_V850_9_PCREL:
95 case R_V850_22_PCREL:
96 case R_V850_HI16_S:
97 case R_V850_HI16:
98 case R_V850_LO16:
99 case R_V850_LO16_SPLIT_OFFSET:
100 case R_V850_ABS32:
101 case R_V850_REL32:
102 case R_V850_16:
103 case R_V850_8:
104 case R_V850_CALLT_6_7_OFFSET:
105 case R_V850_CALLT_16_16_OFFSET:
106 break;
107
108 /* This relocation describes the C++ object vtable hierarchy.
109 Reconstruct it for later use during GC. */
110 case R_V850_GNU_VTINHERIT:
111 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
112 return FALSE;
113 break;
114
115 /* This relocation describes which C++ vtable entries
116 are actually used. Record for later use during GC. */
117 case R_V850_GNU_VTENTRY:
118 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
119 return FALSE;
120 break;
121
122 case R_V850_SDA_16_16_SPLIT_OFFSET:
123 case R_V850_SDA_16_16_OFFSET:
124 case R_V850_SDA_15_16_OFFSET:
125 other = V850_OTHER_SDA;
126 common = ".scommon";
127 goto small_data_common;
128
129 case R_V850_ZDA_16_16_SPLIT_OFFSET:
130 case R_V850_ZDA_16_16_OFFSET:
131 case R_V850_ZDA_15_16_OFFSET:
132 other = V850_OTHER_ZDA;
133 common = ".zcommon";
134 goto small_data_common;
135
136 case R_V850_TDA_4_5_OFFSET:
137 case R_V850_TDA_4_4_OFFSET:
138 case R_V850_TDA_6_8_OFFSET:
139 case R_V850_TDA_7_8_OFFSET:
140 case R_V850_TDA_7_7_OFFSET:
141 case R_V850_TDA_16_16_OFFSET:
142 other = V850_OTHER_TDA;
143 common = ".tcommon";
144 /* fall through */
145
146 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
147
148 small_data_common:
149 if (h)
150 {
151 /* Flag which type of relocation was used. */
152 h->other |= other;
153 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
154 && (h->other & V850_OTHER_ERROR) == 0)
155 {
156 const char * msg;
157 static char buff[200]; /* XXX */
158
159 switch (h->other & V850_OTHER_MASK)
160 {
161 default:
162 msg = _("Variable `%s' cannot occupy in multiple small data regions");
163 break;
164 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
165 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
166 break;
167 case V850_OTHER_SDA | V850_OTHER_ZDA:
168 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
169 break;
170 case V850_OTHER_SDA | V850_OTHER_TDA:
171 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
172 break;
173 case V850_OTHER_ZDA | V850_OTHER_TDA:
174 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
175 break;
176 }
177
178 sprintf (buff, msg, h->root.root.string);
179 info->callbacks->warning (info, buff, h->root.root.string,
180 abfd, h->root.u.def.section,
181 (bfd_vma) 0);
182
183 bfd_set_error (bfd_error_bad_value);
184 h->other |= V850_OTHER_ERROR;
185 ret = FALSE;
186 }
187 }
188
189 if (h && h->root.type == bfd_link_hash_common
190 && h->root.u.c.p
191 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
192 {
193 asection * section;
194
195 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
196 section->flags |= SEC_IS_COMMON;
197 }
198
199 #ifdef DEBUG
200 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
201 v850_elf_howto_table[ (int)r_type ].name,
202 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
203 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
204 #endif
205 break;
206 }
207 }
208
209 return ret;
210 }
211
212 /* In the old version, when an entry was checked out from the table,
213 it was deleted. This produced an error if the entry was needed
214 more than once, as the second attempted retry failed.
215
216 In the current version, the entry is not deleted, instead we set
217 the field 'found' to TRUE. If a second lookup matches the same
218 entry, then we know that the hi16s reloc has already been updated
219 and does not need to be updated a second time.
220
221 TODO - TOFIX: If it is possible that we need to restore 2 different
222 addresses from the same table entry, where the first generates an
223 overflow, whilst the second do not, then this code will fail. */
224
225 typedef struct hi16s_location
226 {
227 bfd_vma addend;
228 bfd_byte * address;
229 unsigned long counter;
230 bfd_boolean found;
231 struct hi16s_location * next;
232 }
233 hi16s_location;
234
235 static hi16s_location * previous_hi16s;
236 static hi16s_location * free_hi16s;
237 static unsigned long hi16s_counter;
238
239 static void
240 remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address)
241 {
242 hi16s_location * entry = NULL;
243 bfd_size_type amt = sizeof (* free_hi16s);
244
245 /* Find a free structure. */
246 if (free_hi16s == NULL)
247 free_hi16s = bfd_zalloc (abfd, amt);
248
249 entry = free_hi16s;
250 free_hi16s = free_hi16s->next;
251
252 entry->addend = addend;
253 entry->address = address;
254 entry->counter = hi16s_counter ++;
255 entry->found = FALSE;
256 entry->next = previous_hi16s;
257 previous_hi16s = entry;
258
259 /* Cope with wrap around of our counter. */
260 if (hi16s_counter == 0)
261 {
262 /* XXX: Assume that all counter entries differ only in their low 16 bits. */
263 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
264 entry->counter &= 0xffff;
265
266 hi16s_counter = 0x10000;
267 }
268 }
269
270 static bfd_byte *
271 find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found)
272 {
273 hi16s_location *match = NULL;
274 hi16s_location *entry;
275 hi16s_location *previous = NULL;
276 hi16s_location *prev;
277 bfd_byte *addr;
278
279 /* Search the table. Record the most recent entry that matches. */
280 for (entry = previous_hi16s; entry; entry = entry->next)
281 {
282 if (entry->addend == addend
283 && (match == NULL || match->counter < entry->counter))
284 {
285 previous = prev;
286 match = entry;
287 }
288
289 prev = entry;
290 }
291
292 if (match == NULL)
293 return NULL;
294
295 /* Extract the address. */
296 addr = match->address;
297
298 /* Remember if this entry has already been used before. */
299 if (already_found)
300 * already_found = match->found;
301
302 /* Note that this entry has now been used. */
303 match->found = TRUE;
304
305 return addr;
306 }
307
308 /* Calculate the final operand value for a R_V850_LO16 or
309 R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and
310 ADDEND is the sum of the relocation symbol and offset. Store the
311 operand value in *INSN and return true on success.
312
313 The assembler has already done some of this: If the value stored in
314 the instruction has its 15th bit set, (counting from zero) then the
315 assembler will have added 1 to the value stored in the associated
316 HI16S reloc. So for example, these relocations:
317
318 movhi hi( fred ), r0, r1
319 movea lo( fred ), r1, r1
320
321 will store 0 in the value fields for the MOVHI and MOVEA instructions
322 and addend will be the address of fred, but for these instructions:
323
324 movhi hi( fred + 0x123456), r0, r1
325 movea lo( fred + 0x123456), r1, r1
326
327 the value stored in the MOVHI instruction will be 0x12 and the value
328 stored in the MOVEA instruction will be 0x3456. If however the
329 instructions were:
330
331 movhi hi( fred + 0x10ffff), r0, r1
332 movea lo( fred + 0x10ffff), r1, r1
333
334 then the value stored in the MOVHI instruction would be 0x11 (not
335 0x10) and the value stored in the MOVEA instruction would be 0xffff.
336 Thus (assuming for the moment that the addend is 0), at run time the
337 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
338 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
339 the instructions were:
340
341 movhi hi( fred - 1), r0, r1
342 movea lo( fred - 1), r1, r1
343
344 then 0 is stored in the MOVHI instruction and -1 is stored in the
345 MOVEA instruction.
346
347 Overflow can occur if the addition of the value stored in the
348 instruction plus the addend sets the 15th bit when before it was clear.
349 This is because the 15th bit will be sign extended into the high part,
350 thus reducing its value by one, but since the 15th bit was originally
351 clear, the assembler will not have added 1 to the previous HI16S reloc
352 to compensate for this effect. For example:
353
354 movhi hi( fred + 0x123456), r0, r1
355 movea lo( fred + 0x123456), r1, r1
356
357 The value stored in HI16S reloc is 0x12, the value stored in the LO16
358 reloc is 0x3456. If we assume that the address of fred is 0x00007000
359 then the relocations become:
360
361 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
362 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
363
364 but when the instructions are executed, the MOVEA instruction's value
365 is signed extended, so the sum becomes:
366
367 0x00120000
368 + 0xffffa456
369 ------------
370 0x0011a456 but 'fred + 0x123456' = 0x0012a456
371
372 Note that if the 15th bit was set in the value stored in the LO16
373 reloc, then we do not have to do anything:
374
375 movhi hi( fred + 0x10ffff), r0, r1
376 movea lo( fred + 0x10ffff), r1, r1
377
378 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
379 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
380
381 0x00110000
382 + 0x00006fff
383 ------------
384 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
385
386 Overflow can also occur if the computation carries into the 16th bit
387 and it also results in the 15th bit having the same value as the 15th
388 bit of the original value. What happens is that the HI16S reloc
389 will have already examined the 15th bit of the original value and
390 added 1 to the high part if the bit is set. This compensates for the
391 sign extension of 15th bit of the result of the computation. But now
392 there is a carry into the 16th bit, and this has not been allowed for.
393
394 So, for example if fred is at address 0xf000:
395
396 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
397 movea lo( fred + 0xffff), r1, r1
398
399 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
400 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
401
402 0x00010000
403 + 0xffffefff
404 ------------
405 0x0000efff but 'fred + 0xffff' = 0x0001efff
406
407 Similarly, if the 15th bit remains clear, but overflow occurs into
408 the 16th bit then (assuming the address of fred is 0xf000):
409
410 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
411 movea lo( fred + 0x7000), r1, r1
412
413 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
414 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
415
416 0x00000000
417 + 0x00006fff
418 ------------
419 0x00006fff but 'fred + 0x7000' = 0x00016fff
420
421 Note - there is no need to change anything if a carry occurs, and the
422 15th bit changes its value from being set to being clear, as the HI16S
423 reloc will have already added in 1 to the high part for us:
424
425 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
426 movea lo( fred + 0xffff), r1, r1
427
428 HI16S: 0x0001 + (0x00007000 >> 16)
429 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
430
431 0x00010000
432 + 0x00006fff (bit 15 not set, so the top half is zero)
433 ------------
434 0x00016fff which is right (assuming that fred is at 0x7000)
435
436 but if the 15th bit goes from being clear to being set, then we must
437 once again handle overflow:
438
439 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
440 movea lo( fred + 0x7000), r1, r1
441
442 HI16S: 0x0000 + (0x0000ffff >> 16)
443 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
444
445 0x00000000
446 + 0x00006fff (bit 15 not set, so the top half is zero)
447 ------------
448 0x00006fff which is wrong (assuming that fred is at 0xffff). */
449
450 static bfd_boolean
451 v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn,
452 unsigned long addend)
453 {
454 #define BIT15_SET(x) ((x) & 0x8000)
455 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
456
457 if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend))
458 || (OVERFLOWS (addend, *insn)
459 && ((! BIT15_SET (*insn)) || (BIT15_SET (addend)))))
460 {
461 bfd_boolean already_updated;
462 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
463 (addend, & already_updated);
464
465 /* Amend the matching HI16_S relocation. */
466 if (hi16s_address != NULL)
467 {
468 if (! already_updated)
469 {
470 unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address);
471 hi_insn += 1;
472 bfd_put_16 (abfd, hi_insn, hi16s_address);
473 }
474 }
475 else
476 {
477 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
478 return FALSE;
479 }
480 }
481 #undef OVERFLOWS
482 #undef BIT15_SET
483
484 /* Do not complain if value has top bit set, as this has been
485 anticipated. */
486 *insn = (*insn + addend) & 0xffff;
487 return TRUE;
488 }
489
490 /* FIXME: The code here probably ought to be removed and the code in reloc.c
491 allowed to do its stuff instead. At least for most of the relocs, anyway. */
492
493 static bfd_reloc_status_type
494 v850_elf_perform_relocation (bfd *abfd,
495 unsigned int r_type,
496 bfd_vma addend,
497 bfd_byte *address)
498 {
499 unsigned long insn;
500 unsigned long result;
501 bfd_signed_vma saddend = (bfd_signed_vma) addend;
502
503 switch (r_type)
504 {
505 default:
506 return bfd_reloc_notsupported;
507
508 case R_V850_REL32:
509 case R_V850_ABS32:
510 bfd_put_32 (abfd, addend, address);
511 return bfd_reloc_ok;
512
513 case R_V850_22_PCREL:
514 if (saddend > 0x1fffff || saddend < -0x200000)
515 return bfd_reloc_overflow;
516
517 if ((addend % 2) != 0)
518 return bfd_reloc_dangerous;
519
520 insn = bfd_get_32 (abfd, address);
521 insn &= ~0xfffe003f;
522 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
523 bfd_put_32 (abfd, (bfd_vma) insn, address);
524 return bfd_reloc_ok;
525
526 case R_V850_9_PCREL:
527 if (saddend > 0xff || saddend < -0x100)
528 return bfd_reloc_overflow;
529
530 if ((addend % 2) != 0)
531 return bfd_reloc_dangerous;
532
533 insn = bfd_get_16 (abfd, address);
534 insn &= ~ 0xf870;
535 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
536 break;
537
538 case R_V850_HI16:
539 addend += (bfd_get_16 (abfd, address) << 16);
540 addend = (addend >> 16);
541 insn = addend;
542 break;
543
544 case R_V850_HI16_S:
545 /* Remember where this relocation took place. */
546 remember_hi16s_reloc (abfd, addend, address);
547
548 addend += (bfd_get_16 (abfd, address) << 16);
549 addend = (addend >> 16) + ((addend & 0x8000) != 0);
550
551 /* This relocation cannot overflow. */
552 if (addend > 0x7fff)
553 addend = 0;
554
555 insn = addend;
556 break;
557
558 case R_V850_LO16:
559 insn = bfd_get_16 (abfd, address);
560 if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend))
561 return bfd_reloc_overflow;
562 break;
563
564 case R_V850_8:
565 addend += (char) bfd_get_8 (abfd, address);
566
567 saddend = (bfd_signed_vma) addend;
568
569 if (saddend > 0x7f || saddend < -0x80)
570 return bfd_reloc_overflow;
571
572 bfd_put_8 (abfd, addend, address);
573 return bfd_reloc_ok;
574
575 case R_V850_CALLT_16_16_OFFSET:
576 addend += bfd_get_16 (abfd, address);
577
578 saddend = (bfd_signed_vma) addend;
579
580 if (saddend > 0xffff || saddend < 0)
581 return bfd_reloc_overflow;
582
583 insn = addend;
584 break;
585
586 case R_V850_16:
587 case R_V850_SDA_16_16_OFFSET:
588 case R_V850_ZDA_16_16_OFFSET:
589 case R_V850_TDA_16_16_OFFSET:
590 addend += bfd_get_16 (abfd, address);
591
592 saddend = (bfd_signed_vma) addend;
593
594 if (saddend > 0x7fff || saddend < -0x8000)
595 return bfd_reloc_overflow;
596
597 insn = addend;
598 break;
599
600 case R_V850_SDA_15_16_OFFSET:
601 case R_V850_ZDA_15_16_OFFSET:
602 insn = bfd_get_16 (abfd, address);
603 addend += (insn & 0xfffe);
604
605 saddend = (bfd_signed_vma) addend;
606
607 if (saddend > 0x7ffe || saddend < -0x8000)
608 return bfd_reloc_overflow;
609
610 if (addend & 1)
611 return bfd_reloc_dangerous;
612
613 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
614 break;
615
616 case R_V850_TDA_6_8_OFFSET:
617 insn = bfd_get_16 (abfd, address);
618 addend += ((insn & 0x7e) << 1);
619
620 saddend = (bfd_signed_vma) addend;
621
622 if (saddend > 0xfc || saddend < 0)
623 return bfd_reloc_overflow;
624
625 if (addend & 3)
626 return bfd_reloc_dangerous;
627
628 insn &= 0xff81;
629 insn |= (addend >> 1);
630 break;
631
632 case R_V850_TDA_7_8_OFFSET:
633 insn = bfd_get_16 (abfd, address);
634 addend += ((insn & 0x7f) << 1);
635
636 saddend = (bfd_signed_vma) addend;
637
638 if (saddend > 0xfe || saddend < 0)
639 return bfd_reloc_overflow;
640
641 if (addend & 1)
642 return bfd_reloc_dangerous;
643
644 insn &= 0xff80;
645 insn |= (addend >> 1);
646 break;
647
648 case R_V850_TDA_7_7_OFFSET:
649 insn = bfd_get_16 (abfd, address);
650 addend += insn & 0x7f;
651
652 saddend = (bfd_signed_vma) addend;
653
654 if (saddend > 0x7f || saddend < 0)
655 return bfd_reloc_overflow;
656
657 insn &= 0xff80;
658 insn |= addend;
659 break;
660
661 case R_V850_TDA_4_5_OFFSET:
662 insn = bfd_get_16 (abfd, address);
663 addend += ((insn & 0xf) << 1);
664
665 saddend = (bfd_signed_vma) addend;
666
667 if (saddend > 0x1e || saddend < 0)
668 return bfd_reloc_overflow;
669
670 if (addend & 1)
671 return bfd_reloc_dangerous;
672
673 insn &= 0xfff0;
674 insn |= (addend >> 1);
675 break;
676
677 case R_V850_TDA_4_4_OFFSET:
678 insn = bfd_get_16 (abfd, address);
679 addend += insn & 0xf;
680
681 saddend = (bfd_signed_vma) addend;
682
683 if (saddend > 0xf || saddend < 0)
684 return bfd_reloc_overflow;
685
686 insn &= 0xfff0;
687 insn |= addend;
688 break;
689
690 case R_V850_LO16_SPLIT_OFFSET:
691 insn = bfd_get_32 (abfd, address);
692 result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5);
693 if (! v850_elf_perform_lo16_relocation (abfd, &result, addend))
694 return bfd_reloc_overflow;
695 insn = (((result << 16) & 0xfffe0000)
696 | ((result << 5) & 0x20)
697 | (insn & ~0xfffe0020));
698 bfd_put_32 (abfd, insn, address);
699 return bfd_reloc_ok;
700
701 case R_V850_ZDA_16_16_SPLIT_OFFSET:
702 case R_V850_SDA_16_16_SPLIT_OFFSET:
703 insn = bfd_get_32 (abfd, address);
704 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
705
706 saddend = (bfd_signed_vma) addend;
707
708 if (saddend > 0x7fff || saddend < -0x8000)
709 return bfd_reloc_overflow;
710
711 insn &= 0x0001ffdf;
712 insn |= (addend & 1) << 5;
713 insn |= (addend &~ (bfd_vma) 1) << 16;
714
715 bfd_put_32 (abfd, (bfd_vma) insn, address);
716 return bfd_reloc_ok;
717
718 case R_V850_CALLT_6_7_OFFSET:
719 insn = bfd_get_16 (abfd, address);
720 addend += ((insn & 0x3f) << 1);
721
722 saddend = (bfd_signed_vma) addend;
723
724 if (saddend > 0x7e || saddend < 0)
725 return bfd_reloc_overflow;
726
727 if (addend & 1)
728 return bfd_reloc_dangerous;
729
730 insn &= 0xff80;
731 insn |= (addend >> 1);
732 break;
733
734 case R_V850_GNU_VTINHERIT:
735 case R_V850_GNU_VTENTRY:
736 return bfd_reloc_ok;
737
738 }
739
740 bfd_put_16 (abfd, (bfd_vma) insn, address);
741 return bfd_reloc_ok;
742 }
743 \f
744 /* Insert the addend into the instruction. */
745
746 static bfd_reloc_status_type
747 v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED,
748 arelent *reloc,
749 asymbol *symbol,
750 void * data ATTRIBUTE_UNUSED,
751 asection *isection,
752 bfd *obfd,
753 char **err ATTRIBUTE_UNUSED)
754 {
755 long relocation;
756
757 /* If there is an output BFD,
758 and the symbol is not a section name (which is only defined at final link time),
759 and either we are not putting the addend into the instruction
760 or the addend is zero, so there is nothing to add into the instruction
761 then just fixup the address and return. */
762 if (obfd != NULL
763 && (symbol->flags & BSF_SECTION_SYM) == 0
764 && (! reloc->howto->partial_inplace
765 || reloc->addend == 0))
766 {
767 reloc->address += isection->output_offset;
768 return bfd_reloc_ok;
769 }
770
771 /* Catch relocs involving undefined symbols. */
772 if (bfd_is_und_section (symbol->section)
773 && (symbol->flags & BSF_WEAK) == 0
774 && obfd == NULL)
775 return bfd_reloc_undefined;
776
777 /* We handle final linking of some relocs ourselves. */
778
779 /* Is the address of the relocation really within the section? */
780 if (reloc->address > bfd_get_section_limit (abfd, isection))
781 return bfd_reloc_outofrange;
782
783 /* Work out which section the relocation is targeted at and the
784 initial relocation command value. */
785
786 if (reloc->howto->pc_relative)
787 return bfd_reloc_ok;
788
789 /* Get symbol value. (Common symbols are special.) */
790 if (bfd_is_com_section (symbol->section))
791 relocation = 0;
792 else
793 relocation = symbol->value;
794
795 /* Convert input-section-relative symbol value to absolute + addend. */
796 relocation += symbol->section->output_section->vma;
797 relocation += symbol->section->output_offset;
798 relocation += reloc->addend;
799
800 reloc->addend = relocation;
801 return bfd_reloc_ok;
802 }
803
804 /* This function is used for relocs which are only used
805 for relaxing, which the linker should otherwise ignore. */
806
807 static bfd_reloc_status_type
808 v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
809 arelent *reloc_entry,
810 asymbol *symbol ATTRIBUTE_UNUSED,
811 void * data ATTRIBUTE_UNUSED,
812 asection *input_section,
813 bfd *output_bfd,
814 char **error_message ATTRIBUTE_UNUSED)
815 {
816 if (output_bfd != NULL)
817 reloc_entry->address += input_section->output_offset;
818
819 return bfd_reloc_ok;
820 }
821 /* Note: It is REQUIRED that the 'type' value of each entry
822 in this array match the index of the entry in the array. */
823 static reloc_howto_type v850_elf_howto_table[] =
824 {
825 /* This reloc does nothing. */
826 HOWTO (R_V850_NONE, /* Type. */
827 0, /* Rightshift. */
828 2, /* Size (0 = byte, 1 = short, 2 = long). */
829 32, /* Bitsize. */
830 FALSE, /* PC_relative. */
831 0, /* Bitpos. */
832 complain_overflow_bitfield, /* Complain_on_overflow. */
833 bfd_elf_generic_reloc, /* Special_function. */
834 "R_V850_NONE", /* Name. */
835 FALSE, /* Partial_inplace. */
836 0, /* Src_mask. */
837 0, /* Dst_mask. */
838 FALSE), /* PCrel_offset. */
839
840 /* A PC relative 9 bit branch. */
841 HOWTO (R_V850_9_PCREL, /* Type. */
842 2, /* Rightshift. */
843 2, /* Size (0 = byte, 1 = short, 2 = long). */
844 26, /* Bitsize. */
845 TRUE, /* PC_relative. */
846 0, /* Bitpos. */
847 complain_overflow_bitfield, /* Complain_on_overflow. */
848 v850_elf_reloc, /* Special_function. */
849 "R_V850_9_PCREL", /* Name. */
850 FALSE, /* Partial_inplace. */
851 0x00ffffff, /* Src_mask. */
852 0x00ffffff, /* Dst_mask. */
853 TRUE), /* PCrel_offset. */
854
855 /* A PC relative 22 bit branch. */
856 HOWTO (R_V850_22_PCREL, /* Type. */
857 2, /* Rightshift. */
858 2, /* Size (0 = byte, 1 = short, 2 = long). */
859 22, /* Bitsize. */
860 TRUE, /* PC_relative. */
861 7, /* Bitpos. */
862 complain_overflow_signed, /* Complain_on_overflow. */
863 v850_elf_reloc, /* Special_function. */
864 "R_V850_22_PCREL", /* Name. */
865 FALSE, /* Partial_inplace. */
866 0x07ffff80, /* Src_mask. */
867 0x07ffff80, /* Dst_mask. */
868 TRUE), /* PCrel_offset. */
869
870 /* High 16 bits of symbol value. */
871 HOWTO (R_V850_HI16_S, /* Type. */
872 0, /* Rightshift. */
873 1, /* Size (0 = byte, 1 = short, 2 = long). */
874 16, /* Bitsize. */
875 FALSE, /* PC_relative. */
876 0, /* Bitpos. */
877 complain_overflow_dont, /* Complain_on_overflow. */
878 v850_elf_reloc, /* Special_function. */
879 "R_V850_HI16_S", /* Name. */
880 FALSE, /* Partial_inplace. */
881 0xffff, /* Src_mask. */
882 0xffff, /* Dst_mask. */
883 FALSE), /* PCrel_offset. */
884
885 /* High 16 bits of symbol value. */
886 HOWTO (R_V850_HI16, /* Type. */
887 0, /* Rightshift. */
888 1, /* Size (0 = byte, 1 = short, 2 = long). */
889 16, /* Bitsize. */
890 FALSE, /* PC_relative. */
891 0, /* Bitpos. */
892 complain_overflow_dont, /* Complain_on_overflow. */
893 v850_elf_reloc, /* Special_function. */
894 "R_V850_HI16", /* Name. */
895 FALSE, /* Partial_inplace. */
896 0xffff, /* Src_mask. */
897 0xffff, /* Dst_mask. */
898 FALSE), /* PCrel_offset. */
899
900 /* Low 16 bits of symbol value. */
901 HOWTO (R_V850_LO16, /* Type. */
902 0, /* Rightshift. */
903 1, /* Size (0 = byte, 1 = short, 2 = long). */
904 16, /* Bitsize. */
905 FALSE, /* PC_relative. */
906 0, /* Bitpos. */
907 complain_overflow_dont, /* Complain_on_overflow. */
908 v850_elf_reloc, /* Special_function. */
909 "R_V850_LO16", /* Name. */
910 FALSE, /* Partial_inplace. */
911 0xffff, /* Src_mask. */
912 0xffff, /* Dst_mask. */
913 FALSE), /* PCrel_offset. */
914
915 /* Simple 32bit reloc. */
916 HOWTO (R_V850_ABS32, /* Type. */
917 0, /* Rightshift. */
918 2, /* Size (0 = byte, 1 = short, 2 = long). */
919 32, /* Bitsize. */
920 FALSE, /* PC_relative. */
921 0, /* Bitpos. */
922 complain_overflow_dont, /* Complain_on_overflow. */
923 v850_elf_reloc, /* Special_function. */
924 "R_V850_ABS32", /* Name. */
925 FALSE, /* Partial_inplace. */
926 0xffffffff, /* Src_mask. */
927 0xffffffff, /* Dst_mask. */
928 FALSE), /* PCrel_offset. */
929
930 /* Simple 16bit reloc. */
931 HOWTO (R_V850_16, /* Type. */
932 0, /* Rightshift. */
933 1, /* Size (0 = byte, 1 = short, 2 = long). */
934 16, /* Bitsize. */
935 FALSE, /* PC_relative. */
936 0, /* Bitpos. */
937 complain_overflow_dont, /* Complain_on_overflow. */
938 bfd_elf_generic_reloc, /* Special_function. */
939 "R_V850_16", /* Name. */
940 FALSE, /* Partial_inplace. */
941 0xffff, /* Src_mask. */
942 0xffff, /* Dst_mask. */
943 FALSE), /* PCrel_offset. */
944
945 /* Simple 8bit reloc. */
946 HOWTO (R_V850_8, /* Type. */
947 0, /* Rightshift. */
948 0, /* Size (0 = byte, 1 = short, 2 = long). */
949 8, /* Bitsize. */
950 FALSE, /* PC_relative. */
951 0, /* Bitpos. */
952 complain_overflow_dont, /* Complain_on_overflow. */
953 bfd_elf_generic_reloc, /* Special_function. */
954 "R_V850_8", /* Name. */
955 FALSE, /* Partial_inplace. */
956 0xff, /* Src_mask. */
957 0xff, /* Dst_mask. */
958 FALSE), /* PCrel_offset. */
959
960 /* 16 bit offset from the short data area pointer. */
961 HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */
962 0, /* Rightshift. */
963 1, /* Size (0 = byte, 1 = short, 2 = long). */
964 16, /* Bitsize. */
965 FALSE, /* PC_relative. */
966 0, /* Bitpos. */
967 complain_overflow_dont, /* Complain_on_overflow. */
968 v850_elf_reloc, /* Special_function. */
969 "R_V850_SDA_16_16_OFFSET", /* Name. */
970 FALSE, /* Partial_inplace. */
971 0xffff, /* Src_mask. */
972 0xffff, /* Dst_mask. */
973 FALSE), /* PCrel_offset. */
974
975 /* 15 bit offset from the short data area pointer. */
976 HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */
977 1, /* Rightshift. */
978 1, /* Size (0 = byte, 1 = short, 2 = long). */
979 16, /* Bitsize. */
980 FALSE, /* PC_relative. */
981 1, /* Bitpos. */
982 complain_overflow_dont, /* Complain_on_overflow. */
983 v850_elf_reloc, /* Special_function. */
984 "R_V850_SDA_15_16_OFFSET", /* Name. */
985 FALSE, /* Partial_inplace. */
986 0xfffe, /* Src_mask. */
987 0xfffe, /* Dst_mask. */
988 FALSE), /* PCrel_offset. */
989
990 /* 16 bit offset from the zero data area pointer. */
991 HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */
992 0, /* Rightshift. */
993 1, /* Size (0 = byte, 1 = short, 2 = long). */
994 16, /* Bitsize. */
995 FALSE, /* PC_relative. */
996 0, /* Bitpos. */
997 complain_overflow_dont, /* Complain_on_overflow. */
998 v850_elf_reloc, /* Special_function. */
999 "R_V850_ZDA_16_16_OFFSET", /* Name. */
1000 FALSE, /* Partial_inplace. */
1001 0xffff, /* Src_mask. */
1002 0xffff, /* Dst_mask. */
1003 FALSE), /* PCrel_offset. */
1004
1005 /* 15 bit offset from the zero data area pointer. */
1006 HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */
1007 1, /* Rightshift. */
1008 1, /* Size (0 = byte, 1 = short, 2 = long). */
1009 16, /* Bitsize. */
1010 FALSE, /* PC_relative. */
1011 1, /* Bitpos. */
1012 complain_overflow_dont, /* Complain_on_overflow. */
1013 v850_elf_reloc, /* Special_function. */
1014 "R_V850_ZDA_15_16_OFFSET", /* Name. */
1015 FALSE, /* Partial_inplace. */
1016 0xfffe, /* Src_mask. */
1017 0xfffe, /* Dst_mask. */
1018 FALSE), /* PCrel_offset. */
1019
1020 /* 6 bit offset from the tiny data area pointer. */
1021 HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */
1022 2, /* Rightshift. */
1023 1, /* Size (0 = byte, 1 = short, 2 = long). */
1024 8, /* Bitsize. */
1025 FALSE, /* PC_relative. */
1026 1, /* Bitpos. */
1027 complain_overflow_dont, /* Complain_on_overflow. */
1028 v850_elf_reloc, /* Special_function. */
1029 "R_V850_TDA_6_8_OFFSET", /* Name. */
1030 FALSE, /* Partial_inplace. */
1031 0x7e, /* Src_mask. */
1032 0x7e, /* Dst_mask. */
1033 FALSE), /* PCrel_offset. */
1034
1035 /* 8 bit offset from the tiny data area pointer. */
1036 HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */
1037 1, /* Rightshift. */
1038 1, /* Size (0 = byte, 1 = short, 2 = long). */
1039 8, /* Bitsize. */
1040 FALSE, /* PC_relative. */
1041 0, /* Bitpos. */
1042 complain_overflow_dont, /* Complain_on_overflow. */
1043 v850_elf_reloc, /* Special_function. */
1044 "R_V850_TDA_7_8_OFFSET", /* Name. */
1045 FALSE, /* Partial_inplace. */
1046 0x7f, /* Src_mask. */
1047 0x7f, /* Dst_mask. */
1048 FALSE), /* PCrel_offset. */
1049
1050 /* 7 bit offset from the tiny data area pointer. */
1051 HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */
1052 0, /* Rightshift. */
1053 1, /* Size (0 = byte, 1 = short, 2 = long). */
1054 7, /* Bitsize. */
1055 FALSE, /* PC_relative. */
1056 0, /* Bitpos. */
1057 complain_overflow_dont, /* Complain_on_overflow. */
1058 v850_elf_reloc, /* Special_function. */
1059 "R_V850_TDA_7_7_OFFSET", /* Name. */
1060 FALSE, /* Partial_inplace. */
1061 0x7f, /* Src_mask. */
1062 0x7f, /* Dst_mask. */
1063 FALSE), /* PCrel_offset. */
1064
1065 /* 16 bit offset from the tiny data area pointer! */
1066 HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */
1067 0, /* Rightshift. */
1068 1, /* Size (0 = byte, 1 = short, 2 = long). */
1069 16, /* Bitsize. */
1070 FALSE, /* PC_relative. */
1071 0, /* Bitpos. */
1072 complain_overflow_dont, /* Complain_on_overflow. */
1073 v850_elf_reloc, /* Special_function. */
1074 "R_V850_TDA_16_16_OFFSET", /* Name. */
1075 FALSE, /* Partial_inplace. */
1076 0xffff, /* Src_mask. */
1077 0xfff, /* Dst_mask. */
1078 FALSE), /* PCrel_offset. */
1079
1080 /* 5 bit offset from the tiny data area pointer. */
1081 HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */
1082 1, /* Rightshift. */
1083 1, /* Size (0 = byte, 1 = short, 2 = long). */
1084 5, /* Bitsize. */
1085 FALSE, /* PC_relative. */
1086 0, /* Bitpos. */
1087 complain_overflow_dont, /* Complain_on_overflow. */
1088 v850_elf_reloc, /* Special_function. */
1089 "R_V850_TDA_4_5_OFFSET", /* Name. */
1090 FALSE, /* Partial_inplace. */
1091 0x0f, /* Src_mask. */
1092 0x0f, /* Dst_mask. */
1093 FALSE), /* PCrel_offset. */
1094
1095 /* 4 bit offset from the tiny data area pointer. */
1096 HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */
1097 0, /* Rightshift. */
1098 1, /* Size (0 = byte, 1 = short, 2 = long). */
1099 4, /* Bitsize. */
1100 FALSE, /* PC_relative. */
1101 0, /* Bitpos. */
1102 complain_overflow_dont, /* Complain_on_overflow. */
1103 v850_elf_reloc, /* Special_function. */
1104 "R_V850_TDA_4_4_OFFSET", /* Name. */
1105 FALSE, /* Partial_inplace. */
1106 0x0f, /* Src_mask. */
1107 0x0f, /* Dst_mask. */
1108 FALSE), /* PCrel_offset. */
1109
1110 /* 16 bit offset from the short data area pointer. */
1111 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */
1112 0, /* Rightshift. */
1113 2, /* Size (0 = byte, 1 = short, 2 = long). */
1114 16, /* Bitsize. */
1115 FALSE, /* PC_relative. */
1116 0, /* Bitpos. */
1117 complain_overflow_dont, /* Complain_on_overflow. */
1118 v850_elf_reloc, /* Special_function. */
1119 "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */
1120 FALSE, /* Partial_inplace. */
1121 0xfffe0020, /* Src_mask. */
1122 0xfffe0020, /* Dst_mask. */
1123 FALSE), /* PCrel_offset. */
1124
1125 /* 16 bit offset from the zero data area pointer. */
1126 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */
1127 0, /* Rightshift. */
1128 2, /* Size (0 = byte, 1 = short, 2 = long). */
1129 16, /* Bitsize. */
1130 FALSE, /* PC_relative. */
1131 0, /* Bitpos. */
1132 complain_overflow_dont, /* Complain_on_overflow. */
1133 v850_elf_reloc, /* Special_function. */
1134 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */
1135 FALSE, /* Partial_inplace. */
1136 0xfffe0020, /* Src_mask. */
1137 0xfffe0020, /* Dst_mask. */
1138 FALSE), /* PCrel_offset. */
1139
1140 /* 6 bit offset from the call table base pointer. */
1141 HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */
1142 0, /* Rightshift. */
1143 1, /* Size (0 = byte, 1 = short, 2 = long). */
1144 7, /* Bitsize. */
1145 FALSE, /* PC_relative. */
1146 0, /* Bitpos. */
1147 complain_overflow_dont, /* Complain_on_overflow. */
1148 v850_elf_reloc, /* Special_function. */
1149 "R_V850_CALLT_6_7_OFFSET", /* Name. */
1150 FALSE, /* Partial_inplace. */
1151 0x3f, /* Src_mask. */
1152 0x3f, /* Dst_mask. */
1153 FALSE), /* PCrel_offset. */
1154
1155 /* 16 bit offset from the call table base pointer. */
1156 HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */
1157 0, /* Rightshift. */
1158 1, /* Size (0 = byte, 1 = short, 2 = long). */
1159 16, /* Bitsize. */
1160 FALSE, /* PC_relative. */
1161 0, /* Bitpos. */
1162 complain_overflow_dont, /* Complain_on_overflow. */
1163 v850_elf_reloc, /* Special_function. */
1164 "R_V850_CALLT_16_16_OFFSET", /* Name. */
1165 FALSE, /* Partial_inplace. */
1166 0xffff, /* Src_mask. */
1167 0xffff, /* Dst_mask. */
1168 FALSE), /* PCrel_offset. */
1169
1170 /* GNU extension to record C++ vtable hierarchy */
1171 HOWTO (R_V850_GNU_VTINHERIT, /* Type. */
1172 0, /* Rightshift. */
1173 2, /* Size (0 = byte, 1 = short, 2 = long). */
1174 0, /* Bitsize. */
1175 FALSE, /* PC_relative. */
1176 0, /* Bitpos. */
1177 complain_overflow_dont, /* Complain_on_overflow. */
1178 NULL, /* Special_function. */
1179 "R_V850_GNU_VTINHERIT", /* Name. */
1180 FALSE, /* Partial_inplace. */
1181 0, /* Src_mask. */
1182 0, /* Dst_mask. */
1183 FALSE), /* PCrel_offset. */
1184
1185 /* GNU extension to record C++ vtable member usage */
1186 HOWTO (R_V850_GNU_VTENTRY, /* Type. */
1187 0, /* Rightshift. */
1188 2, /* Size (0 = byte, 1 = short, 2 = long). */
1189 0, /* Bitsize. */
1190 FALSE, /* PC_relative. */
1191 0, /* Bitpos. */
1192 complain_overflow_dont, /* Complain_on_overflow. */
1193 _bfd_elf_rel_vtable_reloc_fn, /* Special_function. */
1194 "R_V850_GNU_VTENTRY", /* Name. */
1195 FALSE, /* Partial_inplace. */
1196 0, /* Src_mask. */
1197 0, /* Dst_mask. */
1198 FALSE), /* PCrel_offset. */
1199
1200 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
1201 pseudo-op when it finds a function call which can be relaxed. */
1202 HOWTO (R_V850_LONGCALL, /* Type. */
1203 0, /* Rightshift. */
1204 2, /* Size (0 = byte, 1 = short, 2 = long). */
1205 32, /* Bitsize. */
1206 TRUE, /* PC_relative. */
1207 0, /* Bitpos. */
1208 complain_overflow_signed, /* Complain_on_overflow. */
1209 v850_elf_ignore_reloc, /* Special_function. */
1210 "R_V850_LONGCALL", /* Name. */
1211 FALSE, /* Partial_inplace. */
1212 0, /* Src_mask. */
1213 0, /* Dst_mask. */
1214 TRUE), /* PCrel_offset. */
1215
1216 /* Indicates a .longjump pseudo-op. The compiler will generate a
1217 .longjump pseudo-op when it finds a branch which can be relaxed. */
1218 HOWTO (R_V850_LONGJUMP, /* Type. */
1219 0, /* Rightshift. */
1220 2, /* Size (0 = byte, 1 = short, 2 = long). */
1221 32, /* Bitsize. */
1222 TRUE, /* PC_relative. */
1223 0, /* Bitpos. */
1224 complain_overflow_signed, /* Complain_on_overflow. */
1225 v850_elf_ignore_reloc, /* Special_function. */
1226 "R_V850_LONGJUMP", /* Name. */
1227 FALSE, /* Partial_inplace. */
1228 0, /* Src_mask. */
1229 0, /* Dst_mask. */
1230 TRUE), /* PCrel_offset. */
1231
1232 HOWTO (R_V850_ALIGN, /* Type. */
1233 0, /* Rightshift. */
1234 1, /* Size (0 = byte, 1 = short, 2 = long). */
1235 0, /* Bitsize. */
1236 FALSE, /* PC_relative. */
1237 0, /* Bitpos. */
1238 complain_overflow_unsigned, /* Complain_on_overflow. */
1239 v850_elf_ignore_reloc, /* Special_function. */
1240 "R_V850_ALIGN", /* Name. */
1241 FALSE, /* Partial_inplace. */
1242 0, /* Src_mask. */
1243 0, /* Dst_mask. */
1244 TRUE), /* PCrel_offset. */
1245
1246 /* Simple pc-relative 32bit reloc. */
1247 HOWTO (R_V850_REL32, /* Type. */
1248 0, /* Rightshift. */
1249 2, /* Size (0 = byte, 1 = short, 2 = long). */
1250 32, /* Bitsize. */
1251 TRUE, /* PC_relative. */
1252 0, /* Bitpos. */
1253 complain_overflow_dont, /* Complain_on_overflow. */
1254 v850_elf_reloc, /* Special_function. */
1255 "R_V850_REL32", /* Name. */
1256 FALSE, /* Partial_inplace. */
1257 0xffffffff, /* Src_mask. */
1258 0xffffffff, /* Dst_mask. */
1259 FALSE), /* PCrel_offset. */
1260
1261 /* An ld.bu version of R_V850_LO16. */
1262 HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */
1263 0, /* Rightshift. */
1264 2, /* Size (0 = byte, 1 = short, 2 = long). */
1265 16, /* Bitsize. */
1266 FALSE, /* PC_relative. */
1267 0, /* Bitpos. */
1268 complain_overflow_dont, /* Complain_on_overflow. */
1269 v850_elf_reloc, /* Special_function. */
1270 "R_V850_LO16_SPLIT_OFFSET", /* Name. */
1271 FALSE, /* Partial_inplace. */
1272 0xfffe0020, /* Src_mask. */
1273 0xfffe0020, /* Dst_mask. */
1274 FALSE), /* PCrel_offset. */
1275 };
1276
1277 /* Map BFD reloc types to V850 ELF reloc types. */
1278
1279 struct v850_elf_reloc_map
1280 {
1281 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
1282 unsigned char. */
1283 bfd_reloc_code_real_type bfd_reloc_val;
1284 unsigned int elf_reloc_val;
1285 };
1286
1287 static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
1288 {
1289 { BFD_RELOC_NONE, R_V850_NONE },
1290 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
1291 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
1292 { BFD_RELOC_HI16_S, R_V850_HI16_S },
1293 { BFD_RELOC_HI16, R_V850_HI16 },
1294 { BFD_RELOC_LO16, R_V850_LO16 },
1295 { BFD_RELOC_32, R_V850_ABS32 },
1296 { BFD_RELOC_32_PCREL, R_V850_REL32 },
1297 { BFD_RELOC_16, R_V850_16 },
1298 { BFD_RELOC_8, R_V850_8 },
1299 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
1300 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
1301 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
1302 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
1303 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
1304 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
1305 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
1306 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
1307 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
1308 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
1309 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET },
1310 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
1311 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
1312 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
1313 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
1314 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
1315 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
1316 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
1317 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
1318 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
1319
1320 };
1321 \f
1322 /* Map a bfd relocation into the appropriate howto structure. */
1323
1324 static reloc_howto_type *
1325 v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1326 bfd_reloc_code_real_type code)
1327 {
1328 unsigned int i;
1329
1330 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
1331 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
1332 {
1333 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
1334
1335 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
1336
1337 return v850_elf_howto_table + elf_reloc_val;
1338 }
1339
1340 return NULL;
1341 }
1342 \f
1343 /* Set the howto pointer for an V850 ELF reloc. */
1344
1345 static void
1346 v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1347 arelent *cache_ptr,
1348 Elf_Internal_Rela *dst)
1349 {
1350 unsigned int r_type;
1351
1352 r_type = ELF32_R_TYPE (dst->r_info);
1353 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1354 cache_ptr->howto = &v850_elf_howto_table[r_type];
1355 }
1356
1357 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
1358
1359 static void
1360 v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
1361 arelent * cache_ptr,
1362 Elf_Internal_Rela *dst)
1363 {
1364 unsigned int r_type;
1365
1366 r_type = ELF32_R_TYPE (dst->r_info);
1367 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
1368 cache_ptr->howto = &v850_elf_howto_table[r_type];
1369 }
1370 \f
1371 static bfd_boolean
1372 v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
1373 {
1374 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1375 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1376 }
1377 \f
1378 /* We overload some of the bfd_reloc error codes for own purposes. */
1379 #define bfd_reloc_gp_not_found bfd_reloc_other
1380 #define bfd_reloc_ep_not_found bfd_reloc_continue
1381 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1382
1383 /* Perform a relocation as part of a final link. */
1384
1385 static bfd_reloc_status_type
1386 v850_elf_final_link_relocate (reloc_howto_type *howto,
1387 bfd *input_bfd,
1388 bfd *output_bfd ATTRIBUTE_UNUSED,
1389 asection *input_section,
1390 bfd_byte *contents,
1391 bfd_vma offset,
1392 bfd_vma value,
1393 bfd_vma addend,
1394 struct bfd_link_info *info,
1395 asection *sym_sec,
1396 int is_local ATTRIBUTE_UNUSED)
1397 {
1398 unsigned int r_type = howto->type;
1399 bfd_byte *hit_data = contents + offset;
1400
1401 /* Adjust the value according to the relocation. */
1402 switch (r_type)
1403 {
1404 case R_V850_9_PCREL:
1405 value -= (input_section->output_section->vma
1406 + input_section->output_offset);
1407 value -= offset;
1408 break;
1409
1410 case R_V850_22_PCREL:
1411 value -= (input_section->output_section->vma
1412 + input_section->output_offset
1413 + offset);
1414
1415 /* If the sign extension will corrupt the value then we have overflowed. */
1416 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1417 return bfd_reloc_overflow;
1418
1419 /* Only the bottom 24 bits of the PC are valid. */
1420 value = SEXT24 (value);
1421 break;
1422
1423 case R_V850_REL32:
1424 value -= (input_section->output_section->vma
1425 + input_section->output_offset
1426 + offset);
1427 break;
1428
1429 case R_V850_HI16_S:
1430 case R_V850_HI16:
1431 case R_V850_LO16:
1432 case R_V850_LO16_SPLIT_OFFSET:
1433 case R_V850_16:
1434 case R_V850_ABS32:
1435 case R_V850_8:
1436 break;
1437
1438 case R_V850_ZDA_15_16_OFFSET:
1439 case R_V850_ZDA_16_16_OFFSET:
1440 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1441 if (sym_sec == NULL)
1442 return bfd_reloc_undefined;
1443
1444 value -= sym_sec->output_section->vma;
1445 break;
1446
1447 case R_V850_SDA_15_16_OFFSET:
1448 case R_V850_SDA_16_16_OFFSET:
1449 case R_V850_SDA_16_16_SPLIT_OFFSET:
1450 {
1451 unsigned long gp;
1452 struct bfd_link_hash_entry * h;
1453
1454 if (sym_sec == NULL)
1455 return bfd_reloc_undefined;
1456
1457 /* Get the value of __gp. */
1458 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
1459 if (h == NULL
1460 || h->type != bfd_link_hash_defined)
1461 return bfd_reloc_gp_not_found;
1462
1463 gp = (h->u.def.value
1464 + h->u.def.section->output_section->vma
1465 + h->u.def.section->output_offset);
1466
1467 value -= sym_sec->output_section->vma;
1468 value -= (gp - sym_sec->output_section->vma);
1469 }
1470 break;
1471
1472 case R_V850_TDA_4_4_OFFSET:
1473 case R_V850_TDA_4_5_OFFSET:
1474 case R_V850_TDA_16_16_OFFSET:
1475 case R_V850_TDA_7_7_OFFSET:
1476 case R_V850_TDA_7_8_OFFSET:
1477 case R_V850_TDA_6_8_OFFSET:
1478 {
1479 unsigned long ep;
1480 struct bfd_link_hash_entry * h;
1481
1482 /* Get the value of __ep. */
1483 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
1484 if (h == NULL
1485 || h->type != bfd_link_hash_defined)
1486 return bfd_reloc_ep_not_found;
1487
1488 ep = (h->u.def.value
1489 + h->u.def.section->output_section->vma
1490 + h->u.def.section->output_offset);
1491
1492 value -= ep;
1493 }
1494 break;
1495
1496 case R_V850_CALLT_6_7_OFFSET:
1497 {
1498 unsigned long ctbp;
1499 struct bfd_link_hash_entry * h;
1500
1501 /* Get the value of __ctbp. */
1502 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1503 if (h == NULL
1504 || h->type != bfd_link_hash_defined)
1505 return bfd_reloc_ctbp_not_found;
1506
1507 ctbp = (h->u.def.value
1508 + h->u.def.section->output_section->vma
1509 + h->u.def.section->output_offset);
1510 value -= ctbp;
1511 }
1512 break;
1513
1514 case R_V850_CALLT_16_16_OFFSET:
1515 {
1516 unsigned long ctbp;
1517 struct bfd_link_hash_entry * h;
1518
1519 if (sym_sec == NULL)
1520 return bfd_reloc_undefined;
1521
1522 /* Get the value of __ctbp. */
1523 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1524 if (h == NULL
1525 || h->type != bfd_link_hash_defined)
1526 return bfd_reloc_ctbp_not_found;
1527
1528 ctbp = (h->u.def.value
1529 + h->u.def.section->output_section->vma
1530 + h->u.def.section->output_offset);
1531
1532 value -= sym_sec->output_section->vma;
1533 value -= (ctbp - sym_sec->output_section->vma);
1534 }
1535 break;
1536
1537 case R_V850_NONE:
1538 case R_V850_GNU_VTINHERIT:
1539 case R_V850_GNU_VTENTRY:
1540 case R_V850_LONGCALL:
1541 case R_V850_LONGJUMP:
1542 case R_V850_ALIGN:
1543 return bfd_reloc_ok;
1544
1545 default:
1546 return bfd_reloc_notsupported;
1547 }
1548
1549 /* Perform the relocation. */
1550 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1551 }
1552 \f
1553 /* Relocate an V850 ELF section. */
1554
1555 static bfd_boolean
1556 v850_elf_relocate_section (bfd *output_bfd,
1557 struct bfd_link_info *info,
1558 bfd *input_bfd,
1559 asection *input_section,
1560 bfd_byte *contents,
1561 Elf_Internal_Rela *relocs,
1562 Elf_Internal_Sym *local_syms,
1563 asection **local_sections)
1564 {
1565 Elf_Internal_Shdr *symtab_hdr;
1566 struct elf_link_hash_entry **sym_hashes;
1567 Elf_Internal_Rela *rel;
1568 Elf_Internal_Rela *relend;
1569
1570 if (info->relocatable)
1571 return TRUE;
1572
1573 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1574 sym_hashes = elf_sym_hashes (input_bfd);
1575
1576 /* Reset the list of remembered HI16S relocs to empty. */
1577 free_hi16s = previous_hi16s;
1578 previous_hi16s = NULL;
1579 hi16s_counter = 0;
1580
1581 rel = relocs;
1582 relend = relocs + input_section->reloc_count;
1583 for (; rel < relend; rel++)
1584 {
1585 int r_type;
1586 reloc_howto_type *howto;
1587 unsigned long r_symndx;
1588 Elf_Internal_Sym *sym;
1589 asection *sec;
1590 struct elf_link_hash_entry *h;
1591 bfd_vma relocation;
1592 bfd_reloc_status_type r;
1593
1594 r_symndx = ELF32_R_SYM (rel->r_info);
1595 r_type = ELF32_R_TYPE (rel->r_info);
1596
1597 if (r_type == R_V850_GNU_VTENTRY
1598 || r_type == R_V850_GNU_VTINHERIT)
1599 continue;
1600
1601 /* This is a final link. */
1602 howto = v850_elf_howto_table + r_type;
1603 h = NULL;
1604 sym = NULL;
1605 sec = NULL;
1606 if (r_symndx < symtab_hdr->sh_info)
1607 {
1608 sym = local_syms + r_symndx;
1609 sec = local_sections[r_symndx];
1610 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1611 }
1612 else
1613 {
1614 bfd_boolean unresolved_reloc, warned;
1615
1616 /* Note - this check is delayed until now as it is possible and
1617 valid to have a file without any symbols but with relocs that
1618 can be processed. */
1619 if (sym_hashes == NULL)
1620 {
1621 info->callbacks->warning
1622 (info, "no hash table available",
1623 NULL, input_bfd, input_section, (bfd_vma) 0);
1624
1625 return FALSE;
1626 }
1627
1628 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1629 r_symndx, symtab_hdr, sym_hashes,
1630 h, sec, relocation,
1631 unresolved_reloc, warned);
1632 }
1633
1634 /* FIXME: We should use the addend, but the COFF relocations don't. */
1635 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1636 input_section,
1637 contents, rel->r_offset,
1638 relocation, rel->r_addend,
1639 info, sec, h == NULL);
1640
1641 if (r != bfd_reloc_ok)
1642 {
1643 const char * name;
1644 const char * msg = NULL;
1645
1646 if (h != NULL)
1647 name = h->root.root.string;
1648 else
1649 {
1650 name = (bfd_elf_string_from_elf_section
1651 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1652 if (name == NULL || *name == '\0')
1653 name = bfd_section_name (input_bfd, sec);
1654 }
1655
1656 switch (r)
1657 {
1658 case bfd_reloc_overflow:
1659 if (! ((*info->callbacks->reloc_overflow)
1660 (info, (h ? &h->root : NULL), name, howto->name,
1661 (bfd_vma) 0, input_bfd, input_section,
1662 rel->r_offset)))
1663 return FALSE;
1664 break;
1665
1666 case bfd_reloc_undefined:
1667 if (! ((*info->callbacks->undefined_symbol)
1668 (info, name, input_bfd, input_section,
1669 rel->r_offset, TRUE)))
1670 return FALSE;
1671 break;
1672
1673 case bfd_reloc_outofrange:
1674 msg = _("internal error: out of range error");
1675 goto common_error;
1676
1677 case bfd_reloc_notsupported:
1678 msg = _("internal error: unsupported relocation error");
1679 goto common_error;
1680
1681 case bfd_reloc_dangerous:
1682 msg = _("internal error: dangerous relocation");
1683 goto common_error;
1684
1685 case bfd_reloc_gp_not_found:
1686 msg = _("could not locate special linker symbol __gp");
1687 goto common_error;
1688
1689 case bfd_reloc_ep_not_found:
1690 msg = _("could not locate special linker symbol __ep");
1691 goto common_error;
1692
1693 case bfd_reloc_ctbp_not_found:
1694 msg = _("could not locate special linker symbol __ctbp");
1695 goto common_error;
1696
1697 default:
1698 msg = _("internal error: unknown error");
1699 /* fall through */
1700
1701 common_error:
1702 if (!((*info->callbacks->warning)
1703 (info, msg, name, input_bfd, input_section,
1704 rel->r_offset)))
1705 return FALSE;
1706 break;
1707 }
1708 }
1709 }
1710
1711 return TRUE;
1712 }
1713
1714 static bfd_boolean
1715 v850_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
1716 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1717 asection *sec ATTRIBUTE_UNUSED,
1718 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1719 {
1720 /* No got and plt entries for v850-elf. */
1721 return TRUE;
1722 }
1723
1724 static asection *
1725 v850_elf_gc_mark_hook (asection *sec,
1726 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1727 Elf_Internal_Rela *rel,
1728 struct elf_link_hash_entry *h,
1729 Elf_Internal_Sym *sym)
1730 {
1731 if (h != NULL)
1732 {
1733 switch (ELF32_R_TYPE (rel->r_info))
1734 {
1735 case R_V850_GNU_VTINHERIT:
1736 case R_V850_GNU_VTENTRY:
1737 break;
1738
1739 default:
1740 switch (h->root.type)
1741 {
1742 case bfd_link_hash_defined:
1743 case bfd_link_hash_defweak:
1744 return h->root.u.def.section;
1745
1746 case bfd_link_hash_common:
1747 return h->root.u.c.p->section;
1748
1749 default:
1750 break;
1751 }
1752 }
1753 }
1754 else
1755 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1756
1757 return NULL;
1758 }
1759
1760 /* Set the right machine number. */
1761
1762 static bfd_boolean
1763 v850_elf_object_p (bfd *abfd)
1764 {
1765 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1766 {
1767 default:
1768 case E_V850_ARCH:
1769 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1770 break;
1771 case E_V850E_ARCH:
1772 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1773 break;
1774 case E_V850E1_ARCH:
1775 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1776 break;
1777 }
1778 return TRUE;
1779 }
1780
1781 /* Store the machine number in the flags field. */
1782
1783 static void
1784 v850_elf_final_write_processing (bfd *abfd,
1785 bfd_boolean linker ATTRIBUTE_UNUSED)
1786 {
1787 unsigned long val;
1788
1789 switch (bfd_get_mach (abfd))
1790 {
1791 default:
1792 case bfd_mach_v850: val = E_V850_ARCH; break;
1793 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1794 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
1795 }
1796
1797 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1798 elf_elfheader (abfd)->e_flags |= val;
1799 }
1800
1801 /* Function to keep V850 specific file flags. */
1802
1803 static bfd_boolean
1804 v850_elf_set_private_flags (bfd *abfd, flagword flags)
1805 {
1806 BFD_ASSERT (!elf_flags_init (abfd)
1807 || elf_elfheader (abfd)->e_flags == flags);
1808
1809 elf_elfheader (abfd)->e_flags = flags;
1810 elf_flags_init (abfd) = TRUE;
1811 return TRUE;
1812 }
1813
1814 /* Merge backend specific data from an object file
1815 to the output object file when linking. */
1816
1817 static bfd_boolean
1818 v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
1819 {
1820 flagword out_flags;
1821 flagword in_flags;
1822
1823 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1824 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1825 return TRUE;
1826
1827 in_flags = elf_elfheader (ibfd)->e_flags;
1828 out_flags = elf_elfheader (obfd)->e_flags;
1829
1830 if (! elf_flags_init (obfd))
1831 {
1832 /* If the input is the default architecture then do not
1833 bother setting the flags for the output architecture,
1834 instead allow future merges to do this. If no future
1835 merges ever set these flags then they will retain their
1836 unitialised values, which surprise surprise, correspond
1837 to the default values. */
1838 if (bfd_get_arch_info (ibfd)->the_default)
1839 return TRUE;
1840
1841 elf_flags_init (obfd) = TRUE;
1842 elf_elfheader (obfd)->e_flags = in_flags;
1843
1844 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1845 && bfd_get_arch_info (obfd)->the_default)
1846 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1847
1848 return TRUE;
1849 }
1850
1851 /* Check flag compatibility. */
1852 if (in_flags == out_flags)
1853 return TRUE;
1854
1855 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1856 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1857 {
1858 /* Allow v850e1 binaries to be linked with v850e binaries.
1859 Set the output binary to v850e. */
1860 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1861 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1862 return TRUE;
1863
1864 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1865 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1866 {
1867 elf_elfheader (obfd)->e_flags =
1868 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1869 return TRUE;
1870 }
1871
1872 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
1873 ibfd);
1874 }
1875
1876 return TRUE;
1877 }
1878
1879 /* Display the flags field. */
1880
1881 static bfd_boolean
1882 v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
1883 {
1884 FILE * file = (FILE *) ptr;
1885
1886 BFD_ASSERT (abfd != NULL && ptr != NULL);
1887
1888 _bfd_elf_print_private_bfd_data (abfd, ptr);
1889
1890 /* xgettext:c-format */
1891 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1892
1893 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1894 {
1895 default:
1896 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1897 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1898 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
1899 }
1900
1901 fputc ('\n', file);
1902
1903 return TRUE;
1904 }
1905
1906 /* V850 ELF uses four common sections. One is the usual one, and the
1907 others are for (small) objects in one of the special data areas:
1908 small, tiny and zero. All the objects are kept together, and then
1909 referenced via the gp register, the ep register or the r0 register
1910 respectively, which yields smaller, faster assembler code. This
1911 approach is copied from elf32-mips.c. */
1912
1913 static asection v850_elf_scom_section;
1914 static asymbol v850_elf_scom_symbol;
1915 static asymbol * v850_elf_scom_symbol_ptr;
1916 static asection v850_elf_tcom_section;
1917 static asymbol v850_elf_tcom_symbol;
1918 static asymbol * v850_elf_tcom_symbol_ptr;
1919 static asection v850_elf_zcom_section;
1920 static asymbol v850_elf_zcom_symbol;
1921 static asymbol * v850_elf_zcom_symbol_ptr;
1922
1923 /* Given a BFD section, try to locate the
1924 corresponding ELF section index. */
1925
1926 static bfd_boolean
1927 v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1928 asection *sec,
1929 int *retval)
1930 {
1931 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1932 *retval = SHN_V850_SCOMMON;
1933 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
1934 *retval = SHN_V850_TCOMMON;
1935 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
1936 *retval = SHN_V850_ZCOMMON;
1937 else
1938 return FALSE;
1939
1940 return TRUE;
1941 }
1942
1943 /* Handle the special V850 section numbers that a symbol may use. */
1944
1945 static void
1946 v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
1947 {
1948 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
1949 unsigned int indx;
1950
1951 indx = elfsym->internal_elf_sym.st_shndx;
1952
1953 /* If the section index is an "ordinary" index, then it may
1954 refer to a v850 specific section created by the assembler.
1955 Check the section's type and change the index it matches.
1956
1957 FIXME: Should we alter the st_shndx field as well ? */
1958
1959 if (indx < elf_numsections (abfd))
1960 switch (elf_elfsections(abfd)[indx]->sh_type)
1961 {
1962 case SHT_V850_SCOMMON:
1963 indx = SHN_V850_SCOMMON;
1964 break;
1965
1966 case SHT_V850_TCOMMON:
1967 indx = SHN_V850_TCOMMON;
1968 break;
1969
1970 case SHT_V850_ZCOMMON:
1971 indx = SHN_V850_ZCOMMON;
1972 break;
1973
1974 default:
1975 break;
1976 }
1977
1978 switch (indx)
1979 {
1980 case SHN_V850_SCOMMON:
1981 if (v850_elf_scom_section.name == NULL)
1982 {
1983 /* Initialize the small common section. */
1984 v850_elf_scom_section.name = ".scommon";
1985 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
1986 v850_elf_scom_section.output_section = & v850_elf_scom_section;
1987 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
1988 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
1989 v850_elf_scom_symbol.name = ".scommon";
1990 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
1991 v850_elf_scom_symbol.section = & v850_elf_scom_section;
1992 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
1993 }
1994 asym->section = & v850_elf_scom_section;
1995 asym->value = elfsym->internal_elf_sym.st_size;
1996 break;
1997
1998 case SHN_V850_TCOMMON:
1999 if (v850_elf_tcom_section.name == NULL)
2000 {
2001 /* Initialize the tcommon section. */
2002 v850_elf_tcom_section.name = ".tcommon";
2003 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2004 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2005 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2006 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2007 v850_elf_tcom_symbol.name = ".tcommon";
2008 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2009 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2010 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2011 }
2012 asym->section = & v850_elf_tcom_section;
2013 asym->value = elfsym->internal_elf_sym.st_size;
2014 break;
2015
2016 case SHN_V850_ZCOMMON:
2017 if (v850_elf_zcom_section.name == NULL)
2018 {
2019 /* Initialize the zcommon section. */
2020 v850_elf_zcom_section.name = ".zcommon";
2021 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2022 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2023 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2024 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2025 v850_elf_zcom_symbol.name = ".zcommon";
2026 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2027 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2028 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2029 }
2030 asym->section = & v850_elf_zcom_section;
2031 asym->value = elfsym->internal_elf_sym.st_size;
2032 break;
2033 }
2034 }
2035
2036 /* Hook called by the linker routine which adds symbols from an object
2037 file. We must handle the special v850 section numbers here. */
2038
2039 static bfd_boolean
2040 v850_elf_add_symbol_hook (bfd *abfd,
2041 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2042 Elf_Internal_Sym *sym,
2043 const char **namep ATTRIBUTE_UNUSED,
2044 flagword *flagsp ATTRIBUTE_UNUSED,
2045 asection **secp,
2046 bfd_vma *valp)
2047 {
2048 unsigned int indx = sym->st_shndx;
2049
2050 /* If the section index is an "ordinary" index, then it may
2051 refer to a v850 specific section created by the assembler.
2052 Check the section's type and change the index it matches.
2053
2054 FIXME: Should we alter the st_shndx field as well ? */
2055
2056 if (indx < elf_numsections (abfd))
2057 switch (elf_elfsections(abfd)[indx]->sh_type)
2058 {
2059 case SHT_V850_SCOMMON:
2060 indx = SHN_V850_SCOMMON;
2061 break;
2062
2063 case SHT_V850_TCOMMON:
2064 indx = SHN_V850_TCOMMON;
2065 break;
2066
2067 case SHT_V850_ZCOMMON:
2068 indx = SHN_V850_ZCOMMON;
2069 break;
2070
2071 default:
2072 break;
2073 }
2074
2075 switch (indx)
2076 {
2077 case SHN_V850_SCOMMON:
2078 *secp = bfd_make_section_old_way (abfd, ".scommon");
2079 (*secp)->flags |= SEC_IS_COMMON;
2080 *valp = sym->st_size;
2081 break;
2082
2083 case SHN_V850_TCOMMON:
2084 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2085 (*secp)->flags |= SEC_IS_COMMON;
2086 *valp = sym->st_size;
2087 break;
2088
2089 case SHN_V850_ZCOMMON:
2090 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2091 (*secp)->flags |= SEC_IS_COMMON;
2092 *valp = sym->st_size;
2093 break;
2094 }
2095
2096 return TRUE;
2097 }
2098
2099 static bfd_boolean
2100 v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2101 const char *name ATTRIBUTE_UNUSED,
2102 Elf_Internal_Sym *sym,
2103 asection *input_sec,
2104 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2105 {
2106 /* If we see a common symbol, which implies a relocatable link, then
2107 if a symbol was in a special common section in an input file, mark
2108 it as a special common in the output file. */
2109
2110 if (sym->st_shndx == SHN_COMMON)
2111 {
2112 if (strcmp (input_sec->name, ".scommon") == 0)
2113 sym->st_shndx = SHN_V850_SCOMMON;
2114 else if (strcmp (input_sec->name, ".tcommon") == 0)
2115 sym->st_shndx = SHN_V850_TCOMMON;
2116 else if (strcmp (input_sec->name, ".zcommon") == 0)
2117 sym->st_shndx = SHN_V850_ZCOMMON;
2118 }
2119
2120 return TRUE;
2121 }
2122
2123 static bfd_boolean
2124 v850_elf_section_from_shdr (bfd *abfd,
2125 Elf_Internal_Shdr *hdr,
2126 const char *name,
2127 int shindex)
2128 {
2129 /* There ought to be a place to keep ELF backend specific flags, but
2130 at the moment there isn't one. We just keep track of the
2131 sections by their name, instead. */
2132
2133 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2134 return FALSE;
2135
2136 switch (hdr->sh_type)
2137 {
2138 case SHT_V850_SCOMMON:
2139 case SHT_V850_TCOMMON:
2140 case SHT_V850_ZCOMMON:
2141 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2142 (bfd_get_section_flags (abfd,
2143 hdr->bfd_section)
2144 | SEC_IS_COMMON)))
2145 return FALSE;
2146 }
2147
2148 return TRUE;
2149 }
2150
2151 /* Set the correct type for a V850 ELF section. We do this
2152 by the section name, which is a hack, but ought to work. */
2153
2154 static bfd_boolean
2155 v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2156 Elf_Internal_Shdr *hdr,
2157 asection *sec)
2158 {
2159 const char * name;
2160
2161 name = bfd_get_section_name (abfd, sec);
2162
2163 if (strcmp (name, ".scommon") == 0)
2164 hdr->sh_type = SHT_V850_SCOMMON;
2165 else if (strcmp (name, ".tcommon") == 0)
2166 hdr->sh_type = SHT_V850_TCOMMON;
2167 else if (strcmp (name, ".zcommon") == 0)
2168 hdr->sh_type = SHT_V850_ZCOMMON;
2169
2170 return TRUE;
2171 }
2172
2173 /* Delete some bytes from a section while relaxing. */
2174
2175 static bfd_boolean
2176 v850_elf_relax_delete_bytes (bfd *abfd,
2177 asection *sec,
2178 bfd_vma addr,
2179 bfd_vma toaddr,
2180 int count)
2181 {
2182 Elf_Internal_Shdr *symtab_hdr;
2183 Elf32_External_Sym *extsyms;
2184 Elf32_External_Sym *esym;
2185 Elf32_External_Sym *esymend;
2186 int index;
2187 unsigned int sec_shndx;
2188 bfd_byte *contents;
2189 Elf_Internal_Rela *irel;
2190 Elf_Internal_Rela *irelend;
2191 struct elf_link_hash_entry *sym_hash;
2192 Elf_Internal_Shdr *shndx_hdr;
2193 Elf_External_Sym_Shndx *shndx;
2194
2195 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2196 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2197
2198 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2199
2200 contents = elf_section_data (sec)->this_hdr.contents;
2201
2202 /* The deletion must stop at the next ALIGN reloc for an alignment
2203 power larger than the number of bytes we are deleting. */
2204
2205 /* Actually delete the bytes. */
2206 #if (DEBUG_RELAX & 2)
2207 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2208 sec->name, addr, toaddr, count );
2209 #endif
2210 memmove (contents + addr, contents + addr + count,
2211 toaddr - addr - count);
2212 memset (contents + toaddr-count, 0, count);
2213
2214 /* Adjust all the relocs. */
2215 irel = elf_section_data (sec)->relocs;
2216 irelend = irel + sec->reloc_count;
2217 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2218 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2219
2220 for (; irel < irelend; irel++)
2221 {
2222 bfd_vma raddr, paddr, symval;
2223 Elf_Internal_Sym isym;
2224
2225 /* Get the new reloc address. */
2226 raddr = irel->r_offset;
2227 if ((raddr >= (addr + count) && raddr < toaddr))
2228 irel->r_offset -= count;
2229
2230 if (raddr >= addr && raddr < addr + count)
2231 {
2232 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2233 (int) R_V850_NONE);
2234 continue;
2235 }
2236
2237 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2238 continue;
2239
2240 bfd_elf32_swap_symbol_in (abfd,
2241 extsyms + ELF32_R_SYM (irel->r_info),
2242 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2243 & isym);
2244
2245 if (isym.st_shndx != sec_shndx)
2246 continue;
2247
2248 /* Get the value of the symbol referred to by the reloc. */
2249 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2250 {
2251 symval = isym.st_value;
2252 #if (DEBUG_RELAX & 2)
2253 {
2254 char * name = bfd_elf_string_from_elf_section
2255 (abfd, symtab_hdr->sh_link, isym.st_name);
2256 fprintf (stderr,
2257 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2258 sec->name, name, isym.st_name,
2259 sec->output_section->vma, sec->output_offset,
2260 isym.st_value, irel->r_addend);
2261 }
2262 #endif
2263 }
2264 else
2265 {
2266 unsigned long indx;
2267 struct elf_link_hash_entry * h;
2268
2269 /* An external symbol. */
2270 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2271
2272 h = elf_sym_hashes (abfd) [indx];
2273 BFD_ASSERT (h != NULL);
2274
2275 symval = h->root.u.def.value;
2276 #if (DEBUG_RELAX & 2)
2277 fprintf (stderr,
2278 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2279 sec->name, h->root.root.string, h->root.u.def.value,
2280 sec->output_section->vma, sec->output_offset, irel->r_addend);
2281 #endif
2282 }
2283
2284 paddr = symval + irel->r_addend;
2285
2286 if ( (symval >= addr + count && symval < toaddr)
2287 && (paddr < addr + count || paddr >= toaddr))
2288 irel->r_addend += count;
2289 else if ( (symval < addr + count || symval >= toaddr)
2290 && (paddr >= addr + count && paddr < toaddr))
2291 irel->r_addend -= count;
2292 }
2293
2294 /* Adjust the local symbols defined in this section. */
2295 esym = extsyms;
2296 esymend = esym + symtab_hdr->sh_info;
2297
2298 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2299 {
2300 Elf_Internal_Sym isym;
2301
2302 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2303
2304 if (isym.st_shndx == sec_shndx
2305 && isym.st_value >= addr + count
2306 && isym.st_value < toaddr)
2307 {
2308 isym.st_value -= count;
2309
2310 if (isym.st_value + isym.st_size >= toaddr)
2311 isym.st_size += count;
2312
2313 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2314 }
2315 else if (isym.st_shndx == sec_shndx
2316 && isym.st_value < addr + count)
2317 {
2318 if (isym.st_value+isym.st_size >= addr + count
2319 && isym.st_value+isym.st_size < toaddr)
2320 isym.st_size -= count;
2321
2322 if (isym.st_value >= addr
2323 && isym.st_value < addr + count)
2324 isym.st_value = addr;
2325
2326 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2327 }
2328 }
2329
2330 /* Now adjust the global symbols defined in this section. */
2331 esym = extsyms + symtab_hdr->sh_info;
2332 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2333
2334 for (index = 0; esym < esymend; esym ++, index ++)
2335 {
2336 Elf_Internal_Sym isym;
2337
2338 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2339 sym_hash = elf_sym_hashes (abfd) [index];
2340
2341 if (isym.st_shndx == sec_shndx
2342 && ((sym_hash)->root.type == bfd_link_hash_defined
2343 || (sym_hash)->root.type == bfd_link_hash_defweak)
2344 && (sym_hash)->root.u.def.section == sec
2345 && (sym_hash)->root.u.def.value >= addr + count
2346 && (sym_hash)->root.u.def.value < toaddr)
2347 {
2348 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2349 {
2350 isym.st_size += count;
2351 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2352 }
2353
2354 (sym_hash)->root.u.def.value -= count;
2355 }
2356 else if (isym.st_shndx == sec_shndx
2357 && ((sym_hash)->root.type == bfd_link_hash_defined
2358 || (sym_hash)->root.type == bfd_link_hash_defweak)
2359 && (sym_hash)->root.u.def.section == sec
2360 && (sym_hash)->root.u.def.value < addr + count)
2361 {
2362 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2363 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2364 isym.st_size -= count;
2365
2366 if ((sym_hash)->root.u.def.value >= addr
2367 && (sym_hash)->root.u.def.value < addr + count)
2368 (sym_hash)->root.u.def.value = addr;
2369
2370 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2371 }
2372
2373 if (shndx)
2374 ++ shndx;
2375 }
2376
2377 return TRUE;
2378 }
2379
2380 #define NOP_OPCODE (0x0000)
2381 #define MOVHI 0x0640 /* 4byte */
2382 #define MOVHI_MASK 0x07e0
2383 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2384 #define MOVHI_R2(insn) ((insn) >> 11)
2385 #define MOVEA 0x0620 /* 2byte */
2386 #define MOVEA_MASK 0x07e0
2387 #define MOVEA_R1(insn) ((insn) & 0x1f)
2388 #define MOVEA_R2(insn) ((insn) >> 11)
2389 #define JARL_4 0x00040780 /* 4byte */
2390 #define JARL_4_MASK 0xFFFF07FF
2391 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2392 #define ADD_I 0x0240 /* 2byte */
2393 #define ADD_I_MASK 0x07e0
2394 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2395 #define ADD_R2(insn) ((insn) >> 11)
2396 #define JMP_R 0x0060 /* 2byte */
2397 #define JMP_R_MASK 0xFFE0
2398 #define JMP_R1(insn) ((insn) & 0x1f)
2399
2400 static bfd_boolean
2401 v850_elf_relax_section (bfd *abfd,
2402 asection *sec,
2403 struct bfd_link_info *link_info,
2404 bfd_boolean *again)
2405 {
2406 Elf_Internal_Shdr *symtab_hdr;
2407 Elf_Internal_Rela *internal_relocs;
2408 Elf_Internal_Rela *irel;
2409 Elf_Internal_Rela *irelend;
2410 Elf_Internal_Rela *irelalign = NULL;
2411 Elf_Internal_Sym *isymbuf = NULL;
2412 bfd_byte *contents = NULL;
2413 bfd_vma addr = 0;
2414 bfd_vma toaddr;
2415 int align_pad_size = 0;
2416 bfd_boolean result = TRUE;
2417
2418 *again = FALSE;
2419
2420 if (link_info->relocatable
2421 || (sec->flags & SEC_RELOC) == 0
2422 || sec->reloc_count == 0)
2423 return TRUE;
2424
2425 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2426
2427 internal_relocs = (_bfd_elf_link_read_relocs
2428 (abfd, sec, NULL, NULL, link_info->keep_memory));
2429 if (internal_relocs == NULL)
2430 goto error_return;
2431
2432 irelend = internal_relocs + sec->reloc_count;
2433
2434 while (addr < sec->size)
2435 {
2436 toaddr = sec->size;
2437
2438 for (irel = internal_relocs; irel < irelend; irel ++)
2439 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2440 && irel->r_offset > addr
2441 && irel->r_offset < toaddr)
2442 toaddr = irel->r_offset;
2443
2444 #ifdef DEBUG_RELAX
2445 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2446 addr, toaddr, align_pad_size);
2447 #endif
2448 if (irelalign)
2449 {
2450 bfd_vma alignto;
2451 bfd_vma alignmoveto;
2452
2453 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2454 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2455
2456 if (alignmoveto < alignto)
2457 {
2458 unsigned int i;
2459
2460 align_pad_size = alignto - alignmoveto;
2461 #ifdef DEBUG_RELAX
2462 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2463 alignmoveto, toaddr, align_pad_size);
2464 #endif
2465 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2466 toaddr, align_pad_size))
2467 goto error_return;
2468
2469 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2470 (i + 1) < toaddr; i += 2)
2471 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2472
2473 addr = alignmoveto;
2474 }
2475 else
2476 align_pad_size = 0;
2477 }
2478
2479 for (irel = internal_relocs; irel < irelend; irel++)
2480 {
2481 bfd_vma laddr;
2482 bfd_vma addend;
2483 bfd_vma symval;
2484 int insn[5];
2485 int no_match = -1;
2486 Elf_Internal_Rela *hi_irelfn;
2487 Elf_Internal_Rela *lo_irelfn;
2488 Elf_Internal_Rela *irelcall;
2489 bfd_signed_vma foff;
2490
2491 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2492 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2493 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2494 continue;
2495
2496 #ifdef DEBUG_RELAX
2497 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2498 irel->r_info,
2499 irel->r_offset,
2500 irel->r_addend );
2501 #endif
2502
2503 /* Get the section contents. */
2504 if (contents == NULL)
2505 {
2506 if (elf_section_data (sec)->this_hdr.contents != NULL)
2507 contents = elf_section_data (sec)->this_hdr.contents;
2508 else
2509 {
2510 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
2511 goto error_return;
2512 }
2513 }
2514
2515 /* Read this BFD's local symbols if we haven't done so already. */
2516 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2517 {
2518 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2519 if (isymbuf == NULL)
2520 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2521 symtab_hdr->sh_info, 0,
2522 NULL, NULL, NULL);
2523 if (isymbuf == NULL)
2524 goto error_return;
2525 }
2526
2527 laddr = irel->r_offset;
2528
2529 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2530 {
2531 /* Check code for -mlong-calls output. */
2532 if (laddr + 16 <= (bfd_vma) sec->size)
2533 {
2534 insn[0] = bfd_get_16 (abfd, contents + laddr);
2535 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2536 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2537 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2538 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2539
2540 if ((insn[0] & MOVHI_MASK) != MOVHI
2541 || MOVHI_R1 (insn[0]) != 0)
2542 no_match = 0;
2543
2544 if (no_match < 0
2545 && ((insn[1] & MOVEA_MASK) != MOVEA
2546 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2547 no_match = 1;
2548
2549 if (no_match < 0
2550 && (insn[2] & JARL_4_MASK) != JARL_4)
2551 no_match = 2;
2552
2553 if (no_match < 0
2554 && ((insn[3] & ADD_I_MASK) != ADD_I
2555 || ADD_I5 (insn[3]) != 4
2556 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2557 no_match = 3;
2558
2559 if (no_match < 0
2560 && ((insn[4] & JMP_R_MASK) != JMP_R
2561 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2562 no_match = 4;
2563 }
2564 else
2565 {
2566 ((*_bfd_error_handler)
2567 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2568 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2569
2570 continue;
2571 }
2572
2573 if (no_match >= 0)
2574 {
2575 ((*_bfd_error_handler)
2576 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2577 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2578
2579 continue;
2580 }
2581
2582 /* Get the reloc for the address from which the register is
2583 being loaded. This reloc will tell us which function is
2584 actually being called. */
2585 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2586 if (hi_irelfn->r_offset == laddr + 2
2587 && ELF32_R_TYPE (hi_irelfn->r_info)
2588 == (int) R_V850_HI16_S)
2589 break;
2590
2591 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2592 if (lo_irelfn->r_offset == laddr + 6
2593 && ELF32_R_TYPE (lo_irelfn->r_info)
2594 == (int) R_V850_LO16)
2595 break;
2596
2597 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2598 if (irelcall->r_offset == laddr + 8
2599 && ELF32_R_TYPE (irelcall->r_info)
2600 == (int) R_V850_22_PCREL)
2601 break;
2602
2603 if ( hi_irelfn == irelend
2604 || lo_irelfn == irelend
2605 || irelcall == irelend)
2606 {
2607 ((*_bfd_error_handler)
2608 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2609 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2610
2611 continue;
2612 }
2613
2614 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2615 {
2616 Elf_Internal_Sym * isym;
2617
2618 /* A local symbol. */
2619 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
2620
2621 symval = isym->st_value;
2622 }
2623 else
2624 {
2625 unsigned long indx;
2626 struct elf_link_hash_entry * h;
2627
2628 /* An external symbol. */
2629 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2630 h = elf_sym_hashes (abfd)[indx];
2631 BFD_ASSERT (h != NULL);
2632
2633 if ( h->root.type != bfd_link_hash_defined
2634 && h->root.type != bfd_link_hash_defweak)
2635 /* This appears to be a reference to an undefined
2636 symbol. Just ignore it--it will be caught by the
2637 regular reloc processing. */
2638 continue;
2639
2640 symval = h->root.u.def.value;
2641 }
2642
2643 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2644 {
2645 ((*_bfd_error_handler)
2646 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2647 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2648
2649 continue;
2650 }
2651
2652 /* Get the value of the symbol referred to by the reloc. */
2653 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2654 {
2655 Elf_Internal_Sym *isym;
2656 asection *sym_sec;
2657
2658 /* A local symbol. */
2659 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2660
2661 if (isym->st_shndx == SHN_UNDEF)
2662 sym_sec = bfd_und_section_ptr;
2663 else if (isym->st_shndx == SHN_ABS)
2664 sym_sec = bfd_abs_section_ptr;
2665 else if (isym->st_shndx == SHN_COMMON)
2666 sym_sec = bfd_com_section_ptr;
2667 else
2668 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2669 symval = (isym->st_value
2670 + sym_sec->output_section->vma
2671 + sym_sec->output_offset);
2672 }
2673 else
2674 {
2675 unsigned long indx;
2676 struct elf_link_hash_entry *h;
2677
2678 /* An external symbol. */
2679 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
2680 h = elf_sym_hashes (abfd)[indx];
2681 BFD_ASSERT (h != NULL);
2682
2683 if ( h->root.type != bfd_link_hash_defined
2684 && h->root.type != bfd_link_hash_defweak)
2685 /* This appears to be a reference to an undefined
2686 symbol. Just ignore it--it will be caught by the
2687 regular reloc processing. */
2688 continue;
2689
2690 symval = (h->root.u.def.value
2691 + h->root.u.def.section->output_section->vma
2692 + h->root.u.def.section->output_offset);
2693 }
2694
2695 addend = irel->r_addend;
2696
2697 foff = (symval + addend
2698 - (irel->r_offset
2699 + sec->output_section->vma
2700 + sec->output_offset
2701 + 4));
2702 #ifdef DEBUG_RELAX
2703 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2704 irel->r_offset,
2705 (irel->r_offset
2706 + sec->output_section->vma
2707 + sec->output_offset),
2708 symval, addend, foff);
2709 #endif
2710
2711 if (foff < -0x100000 || foff >= 0x100000)
2712 /* After all that work, we can't shorten this function call. */
2713 continue;
2714
2715 /* For simplicity of coding, we are going to modify the section
2716 contents, the section relocs, and the BFD symbol table. We
2717 must tell the rest of the code not to free up this
2718 information. It would be possible to instead create a table
2719 of changes which have to be made, as is done in coff-mips.c;
2720 that would be more work, but would require less memory when
2721 the linker is run. */
2722 elf_section_data (sec)->relocs = internal_relocs;
2723 elf_section_data (sec)->this_hdr.contents = contents;
2724 symtab_hdr->contents = (bfd_byte *) isymbuf;
2725
2726 /* Replace the long call with a jarl. */
2727 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2728
2729 addend = 0;
2730
2731 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2732 /* If this needs to be changed because of future relaxing,
2733 it will be handled here like other internal IND12W
2734 relocs. */
2735 bfd_put_32 (abfd,
2736 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2737 contents + irel->r_offset);
2738 else
2739 /* We can't fully resolve this yet, because the external
2740 symbol value may be changed by future relaxing.
2741 We let the final link phase handle it. */
2742 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2743 contents + irel->r_offset);
2744
2745 hi_irelfn->r_info =
2746 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2747 lo_irelfn->r_info =
2748 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2749 irelcall->r_info =
2750 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2751
2752 if (! v850_elf_relax_delete_bytes (abfd, sec,
2753 irel->r_offset + 4, toaddr, 12))
2754 goto error_return;
2755
2756 align_pad_size += 12;
2757 }
2758 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2759 {
2760 /* Check code for -mlong-jumps output. */
2761 if (laddr + 10 <= (bfd_vma) sec->size)
2762 {
2763 insn[0] = bfd_get_16 (abfd, contents + laddr);
2764 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2765 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2766
2767 if ((insn[0] & MOVHI_MASK) != MOVHI
2768 || MOVHI_R1 (insn[0]) != 0)
2769 no_match = 0;
2770
2771 if (no_match < 0
2772 && ((insn[1] & MOVEA_MASK) != MOVEA
2773 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2774 no_match = 1;
2775
2776 if (no_match < 0
2777 && ((insn[2] & JMP_R_MASK) != JMP_R
2778 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2779 no_match = 4;
2780 }
2781 else
2782 {
2783 ((*_bfd_error_handler)
2784 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2785 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2786
2787 continue;
2788 }
2789
2790 if (no_match >= 0)
2791 {
2792 ((*_bfd_error_handler)
2793 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2794 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2795
2796 continue;
2797 }
2798
2799 /* Get the reloc for the address from which the register is
2800 being loaded. This reloc will tell us which function is
2801 actually being called. */
2802 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2803 if (hi_irelfn->r_offset == laddr + 2
2804 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2805 break;
2806
2807 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2808 if (lo_irelfn->r_offset == laddr + 6
2809 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2810 break;
2811
2812 if ( hi_irelfn == irelend
2813 || lo_irelfn == irelend)
2814 {
2815 ((*_bfd_error_handler)
2816 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2817 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2818
2819 continue;
2820 }
2821
2822 /* Get the value of the symbol referred to by the reloc. */
2823 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2824 {
2825 Elf_Internal_Sym * isym;
2826 asection * sym_sec;
2827
2828 /* A local symbol. */
2829 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2830
2831 if (isym->st_shndx == SHN_UNDEF)
2832 sym_sec = bfd_und_section_ptr;
2833 else if (isym->st_shndx == SHN_ABS)
2834 sym_sec = bfd_abs_section_ptr;
2835 else if (isym->st_shndx == SHN_COMMON)
2836 sym_sec = bfd_com_section_ptr;
2837 else
2838 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2839 symval = (isym->st_value
2840 + sym_sec->output_section->vma
2841 + sym_sec->output_offset);
2842 #ifdef DEBUG_RELAX
2843 {
2844 char * name = bfd_elf_string_from_elf_section
2845 (abfd, symtab_hdr->sh_link, isym->st_name);
2846
2847 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2848 sym_sec->name, name, isym->st_name,
2849 sym_sec->output_section->vma,
2850 sym_sec->output_offset,
2851 isym->st_value, irel->r_addend);
2852 }
2853 #endif
2854 }
2855 else
2856 {
2857 unsigned long indx;
2858 struct elf_link_hash_entry * h;
2859
2860 /* An external symbol. */
2861 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2862 h = elf_sym_hashes (abfd)[indx];
2863 BFD_ASSERT (h != NULL);
2864
2865 if ( h->root.type != bfd_link_hash_defined
2866 && h->root.type != bfd_link_hash_defweak)
2867 /* This appears to be a reference to an undefined
2868 symbol. Just ignore it--it will be caught by the
2869 regular reloc processing. */
2870 continue;
2871
2872 symval = (h->root.u.def.value
2873 + h->root.u.def.section->output_section->vma
2874 + h->root.u.def.section->output_offset);
2875 #ifdef DEBUG_RELAX
2876 fprintf (stderr,
2877 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2878 sec->name, h->root.root.string, h->root.u.def.value,
2879 sec->output_section->vma, sec->output_offset, irel->r_addend);
2880 #endif
2881 }
2882
2883 addend = irel->r_addend;
2884
2885 foff = (symval + addend
2886 - (irel->r_offset
2887 + sec->output_section->vma
2888 + sec->output_offset
2889 + 4));
2890 #ifdef DEBUG_RELAX
2891 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2892 irel->r_offset,
2893 (irel->r_offset
2894 + sec->output_section->vma
2895 + sec->output_offset),
2896 symval, addend, foff);
2897 #endif
2898 if (foff < -0x100000 || foff >= 0x100000)
2899 /* After all that work, we can't shorten this function call. */
2900 continue;
2901
2902 /* For simplicity of coding, we are going to modify the section
2903 contents, the section relocs, and the BFD symbol table. We
2904 must tell the rest of the code not to free up this
2905 information. It would be possible to instead create a table
2906 of changes which have to be made, as is done in coff-mips.c;
2907 that would be more work, but would require less memory when
2908 the linker is run. */
2909 elf_section_data (sec)->relocs = internal_relocs;
2910 elf_section_data (sec)->this_hdr.contents = contents;
2911 symtab_hdr->contents = (bfd_byte *) isymbuf;
2912
2913 if (foff < -0x100 || foff >= 0x100)
2914 {
2915 /* Replace the long jump with a jr. */
2916
2917 irel->r_info =
2918 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
2919
2920 irel->r_addend = addend;
2921 addend = 0;
2922
2923 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2924 /* If this needs to be changed because of future relaxing,
2925 it will be handled here like other internal IND12W
2926 relocs. */
2927 bfd_put_32 (abfd,
2928 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
2929 contents + irel->r_offset);
2930 else
2931 /* We can't fully resolve this yet, because the external
2932 symbol value may be changed by future relaxing.
2933 We let the final link phase handle it. */
2934 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
2935
2936 hi_irelfn->r_info =
2937 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2938 lo_irelfn->r_info =
2939 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2940 if (!v850_elf_relax_delete_bytes (abfd, sec,
2941 irel->r_offset + 4, toaddr, 6))
2942 goto error_return;
2943
2944 align_pad_size += 6;
2945 }
2946 else
2947 {
2948 /* Replace the long jump with a br. */
2949
2950 irel->r_info =
2951 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
2952
2953 irel->r_addend = addend;
2954 addend = 0;
2955
2956 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2957 /* If this needs to be changed because of future relaxing,
2958 it will be handled here like other internal IND12W
2959 relocs. */
2960 bfd_put_16 (abfd,
2961 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
2962 contents + irel->r_offset);
2963 else
2964 /* We can't fully resolve this yet, because the external
2965 symbol value may be changed by future relaxing.
2966 We let the final link phase handle it. */
2967 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
2968
2969 hi_irelfn->r_info =
2970 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2971 lo_irelfn->r_info =
2972 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2973 if (!v850_elf_relax_delete_bytes (abfd, sec,
2974 irel->r_offset + 2, toaddr, 8))
2975 goto error_return;
2976
2977 align_pad_size += 8;
2978 }
2979 }
2980 }
2981
2982 irelalign = NULL;
2983 for (irel = internal_relocs; irel < irelend; irel++)
2984 {
2985 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2986 && irel->r_offset == toaddr)
2987 {
2988 irel->r_offset -= align_pad_size;
2989
2990 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
2991 irelalign = irel;
2992 }
2993 }
2994
2995 addr = toaddr;
2996 }
2997
2998 if (!irelalign)
2999 {
3000 #ifdef DEBUG_RELAX
3001 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3002 align_pad_size,
3003 sec->size,
3004 sec->size - align_pad_size);
3005 #endif
3006 sec->size -= align_pad_size;
3007 }
3008
3009 finish:
3010 if (internal_relocs != NULL
3011 && elf_section_data (sec)->relocs != internal_relocs)
3012 free (internal_relocs);
3013
3014 if (contents != NULL
3015 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3016 free (contents);
3017
3018 if (isymbuf != NULL
3019 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3020 free (isymbuf);
3021
3022 return result;
3023
3024 error_return:
3025 result = FALSE;
3026 goto finish;
3027 }
3028
3029 static const struct bfd_elf_special_section v850_elf_special_sections[] =
3030 {
3031 { ".call_table_data", 16, 0, SHT_PROGBITS, (SHF_ALLOC
3032 + SHF_WRITE) },
3033 { ".call_table_text", 16, 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3034 + SHF_EXECINSTR) },
3035 { ".rosdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3036 + SHF_V850_GPREL) },
3037 { ".rozdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3038 + SHF_V850_R0REL) },
3039 { ".sbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3040 + SHF_V850_GPREL) },
3041 { ".scommon", 8, -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3042 + SHF_V850_GPREL) },
3043 { ".sdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3044 + SHF_V850_GPREL) },
3045 { ".tbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3046 + SHF_V850_EPREL) },
3047 { ".tcommon", 8, -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3048 + SHF_V850_R0REL) },
3049 { ".tdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3050 + SHF_V850_EPREL) },
3051 { ".zbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3052 + SHF_V850_R0REL) },
3053 { ".zcommon", 8, -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3054 + SHF_V850_R0REL) },
3055 { ".zdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3056 + SHF_V850_R0REL) },
3057 { NULL, 0, 0, 0, 0 }
3058 };
3059 \f
3060 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3061 #define TARGET_LITTLE_NAME "elf32-v850"
3062 #define ELF_ARCH bfd_arch_v850
3063 #define ELF_MACHINE_CODE EM_V850
3064 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3065 #define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */
3066 #define ELF_MAXPAGESIZE 0x1000
3067
3068 #define elf_info_to_howto v850_elf_info_to_howto_rela
3069 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3070
3071 #define elf_backend_check_relocs v850_elf_check_relocs
3072 #define elf_backend_relocate_section v850_elf_relocate_section
3073 #define elf_backend_object_p v850_elf_object_p
3074 #define elf_backend_final_write_processing v850_elf_final_write_processing
3075 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3076 #define elf_backend_symbol_processing v850_elf_symbol_processing
3077 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3078 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3079 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3080 #define elf_backend_fake_sections v850_elf_fake_sections
3081 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3082 #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3083 #define elf_backend_special_sections v850_elf_special_sections
3084
3085 #define elf_backend_can_gc_sections 1
3086 #define elf_backend_rela_normal 1
3087
3088 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3089 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3090 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3091 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3092 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3093 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3094
3095 #define elf_symbol_leading_char '_'
3096
3097 #include "elf32-target.h"
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