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* elflink.c (_bfd_elf_gc_mark_hook): New function.
[deliverable/binutils-gdb.git] / bfd / elf32-v850.c
CommitLineData
252b5132 1/* V850-specific support for 32-bit ELF
e460dd0d
AM		 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006 Free Software Foundation, Inc.
252b5132 4
86aba9db 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
86aba9db
NC		 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.
252b5132 11
86aba9db
NC		 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.
252b5132 16
86aba9db
NC		 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
47b0e7ad
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
252b5132 22/* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
86aba9db 23 dependencies. As is the gas & simulator code for the v850. */
252b5132 24
252b5132
RH		 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"
e12dd2ea 31#include "libiberty.h"
252b5132 32
e12dd2ea 33/* Sign-extend a 24-bit number. */
dc810e39 34#define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
435b1e90 35
e460dd0d
AM		 36static reloc_howto_type v850_elf_howto_table[];
37
252b5132
RH		 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
b34976b6 42static bfd_boolean
47b0e7ad
NC		 43v850_elf_check_relocs (bfd *abfd,
44 struct bfd_link_info *info,
45 asection *sec,
46 const Elf_Internal_Rela *relocs)
252b5132 47{
b34976b6 48 bfd_boolean ret = TRUE;
252b5132
RH		 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;
47b0e7ad 57 const char *common = NULL;
252b5132 58
1049f94e 59 if (info->relocatable)
b34976b6 60 return TRUE;
252b5132
RH		 61
62#ifdef DEBUG
d003868e
AM		 63 _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B",
64 sec, abfd);
252b5132
RH		 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
973a3492
L		 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 }
252b5132
RH		 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:
1e50d24d 99 case R_V850_LO16_SPLIT_OFFSET:
e30ddb24
NC		 100 case R_V850_ABS32:
101 case R_V850_REL32:
252b5132
RH		 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:
c152c796 111 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 112 return FALSE;
252b5132
RH		 113 break;
114
e12dd2ea
NC		 115 /* This relocation describes which C++ vtable entries
116 are actually used. Record for later use during GC. */
252b5132 117 case R_V850_GNU_VTENTRY:
c152c796 118 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 119 return FALSE;
252b5132
RH		 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;
435b1e90 128
252b5132
RH		 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;
435b1e90 135
252b5132
RH		 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 {
e12dd2ea
NC		 151 /* Flag which type of relocation was used. */
152 h->other |= other;
252b5132
RH		 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,
dc810e39
AM		 180 abfd, h->root.u.def.section,
181 (bfd_vma) 0);
252b5132
RH		 182
183 bfd_set_error (bfd_error_bad_value);
184 h->other |= V850_OTHER_ERROR;
b34976b6 185 ret = FALSE;
252b5132
RH		 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 {
e12dd2ea
NC		 193 asection * section;
194
195 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
252b5132
RH		 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
e12dd2ea
NC		 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
b34976b6 217 the field 'found' to TRUE. If a second lookup matches the same
e12dd2ea
NC		 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. */
252b5132
RH		 224
225typedef struct hi16s_location
226{
47b0e7ad
NC		 227 bfd_vma addend;
228 bfd_byte * address;
229 unsigned long counter;
230 bfd_boolean found;
231 struct hi16s_location * next;
252b5132
RH		 232}
233hi16s_location;
234
47b0e7ad
NC		 235static hi16s_location * previous_hi16s;
236static hi16s_location * free_hi16s;
237static unsigned long hi16s_counter;
252b5132
RH		 238
239static void
47b0e7ad 240remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address)
252b5132
RH		 241{
242 hi16s_location * entry = NULL;
dc810e39 243 bfd_size_type amt = sizeof (* free_hi16s);
435b1e90 244
252b5132
RH		 245 /* Find a free structure. */
246 if (free_hi16s == NULL)
47b0e7ad 247 free_hi16s = bfd_zalloc (abfd, amt);
252b5132
RH		 248
249 entry = free_hi16s;
250 free_hi16s = free_hi16s->next;
435b1e90 251
252b5132
RH		 252 entry->addend = addend;
253 entry->address = address;
254 entry->counter = hi16s_counter ++;
b34976b6 255 entry->found = FALSE;
252b5132
RH		 256 entry->next = previous_hi16s;
257 previous_hi16s = entry;
435b1e90 258
252b5132
RH		 259 /* Cope with wrap around of our counter. */
260 if (hi16s_counter == 0)
261 {
47b0e7ad 262 /* XXX: Assume that all counter entries differ only in their low 16 bits. */
252b5132
RH		 263 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
264 entry->counter &= 0xffff;
265
266 hi16s_counter = 0x10000;
267 }
252b5132
RH		 268}
269
270static bfd_byte *
47b0e7ad 271find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found)
252b5132 272{
b34976b6
AM		 273 hi16s_location *match = NULL;
274 hi16s_location *entry;
275 hi16s_location *previous = NULL;
276 hi16s_location *prev;
277 bfd_byte *addr;
435b1e90 278
252b5132
RH		 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 }
435b1e90 288
252b5132
RH		 289 prev = entry;
290 }
291
292 if (match == NULL)
293 return NULL;
294
295 /* Extract the address. */
296 addr = match->address;
297
4cc11e76 298 /* Remember if this entry has already been used before. */
252b5132
RH		 299 if (already_found)
300 * already_found = match->found;
301
302 /* Note that this entry has now been used. */
b34976b6 303 match->found = TRUE;
435b1e90 304
252b5132 305 return addr;
435b1e90 306}
252b5132 307
1e50d24d
RS		 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
450static bfd_boolean
451v850_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)
47b0e7ad 456
1e50d24d
RS		 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
252b5132 490/* FIXME: The code here probably ought to be removed and the code in reloc.c
4cc11e76 491 allowed to do its stuff instead. At least for most of the relocs, anyway. */
e12dd2ea 492
252b5132 493static bfd_reloc_status_type
47b0e7ad
NC		 494v850_elf_perform_relocation (bfd *abfd,
495 unsigned int r_type,
496 bfd_vma addend,
497 bfd_byte *address)
252b5132
RH		 498{
499 unsigned long insn;
1e50d24d 500 unsigned long result;
252b5132 501 bfd_signed_vma saddend = (bfd_signed_vma) addend;
435b1e90 502
252b5132
RH		 503 switch (r_type)
504 {
505 default:
252b5132 506 return bfd_reloc_notsupported;
435b1e90 507
e30ddb24
NC		 508 case R_V850_REL32:
509 case R_V850_ABS32:
252b5132
RH		 510 bfd_put_32 (abfd, addend, address);
511 return bfd_reloc_ok;
435b1e90 512
252b5132
RH		 513 case R_V850_22_PCREL:
514 if (saddend > 0x1fffff || saddend < -0x200000)
515 return bfd_reloc_overflow;
435b1e90 516
252b5132
RH		 517 if ((addend % 2) != 0)
518 return bfd_reloc_dangerous;
435b1e90 519
252b5132
RH		 520 insn = bfd_get_32 (abfd, address);
521 insn &= ~0xfffe003f;
522 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
dc810e39 523 bfd_put_32 (abfd, (bfd_vma) insn, address);
252b5132 524 return bfd_reloc_ok;
435b1e90 525
252b5132
RH		 526 case R_V850_9_PCREL:
527 if (saddend > 0xff || saddend < -0x100)
528 return bfd_reloc_overflow;
435b1e90 529
252b5132
RH		 530 if ((addend % 2) != 0)
531 return bfd_reloc_dangerous;
435b1e90 532
252b5132
RH		 533 insn = bfd_get_16 (abfd, address);
534 insn &= ~ 0xf870;
535 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
536 break;
435b1e90 537
252b5132
RH		 538 case R_V850_HI16:
539 addend += (bfd_get_16 (abfd, address) << 16);
540 addend = (addend >> 16);
541 insn = addend;
542 break;
435b1e90 543
252b5132
RH		 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);
435b1e90
KH		 550
551 /* This relocation cannot overflow. */
252b5132
RH		 552 if (addend > 0x7fff)
553 addend = 0;
435b1e90 554
252b5132
RH		 555 insn = addend;
556 break;
435b1e90 557
252b5132 558 case R_V850_LO16:
1e50d24d
RS		 559 insn = bfd_get_16 (abfd, address);
560 if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend))
561 return bfd_reloc_overflow;
562 break;
252b5132
RH		 563
564 case R_V850_8:
565 addend += (char) bfd_get_8 (abfd, address);
566
567 saddend = (bfd_signed_vma) addend;
435b1e90 568
252b5132
RH		 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);
435b1e90 577
252b5132 578 saddend = (bfd_signed_vma) addend;
435b1e90 579
252b5132
RH		 580 if (saddend > 0xffff || saddend < 0)
581 return bfd_reloc_overflow;
582
583 insn = addend;
584 break;
435b1e90 585
252b5132 586 case R_V850_16:
252b5132
RH		 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);
435b1e90 591
252b5132 592 saddend = (bfd_signed_vma) addend;
435b1e90 593
252b5132
RH		 594 if (saddend > 0x7fff || saddend < -0x8000)
595 return bfd_reloc_overflow;
596
597 insn = addend;
598 break;
435b1e90 599
252b5132
RH		 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);
435b1e90 604
252b5132 605 saddend = (bfd_signed_vma) addend;
435b1e90 606
252b5132
RH		 607 if (saddend > 0x7ffe || saddend < -0x8000)
608 return bfd_reloc_overflow;
435b1e90 609
252b5132
RH		 610 if (addend & 1)
611 return bfd_reloc_dangerous;
435b1e90 612
dc810e39 613 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
252b5132 614 break;
435b1e90 615
252b5132
RH		 616 case R_V850_TDA_6_8_OFFSET:
617 insn = bfd_get_16 (abfd, address);
618 addend += ((insn & 0x7e) << 1);
435b1e90 619
252b5132 620 saddend = (bfd_signed_vma) addend;
435b1e90 621
252b5132
RH		 622 if (saddend > 0xfc || saddend < 0)
623 return bfd_reloc_overflow;
435b1e90 624
252b5132
RH		 625 if (addend & 3)
626 return bfd_reloc_dangerous;
435b1e90 627
252b5132
RH		 628 insn &= 0xff81;
629 insn |= (addend >> 1);
630 break;
435b1e90 631
252b5132
RH		 632 case R_V850_TDA_7_8_OFFSET:
633 insn = bfd_get_16 (abfd, address);
634 addend += ((insn & 0x7f) << 1);
435b1e90 635
252b5132 636 saddend = (bfd_signed_vma) addend;
435b1e90 637
252b5132
RH		 638 if (saddend > 0xfe || saddend < 0)
639 return bfd_reloc_overflow;
435b1e90 640
252b5132
RH		 641 if (addend & 1)
642 return bfd_reloc_dangerous;
435b1e90 643
252b5132
RH		 644 insn &= 0xff80;
645 insn |= (addend >> 1);
646 break;
435b1e90 647
252b5132
RH		 648 case R_V850_TDA_7_7_OFFSET:
649 insn = bfd_get_16 (abfd, address);
650 addend += insn & 0x7f;
435b1e90 651
252b5132 652 saddend = (bfd_signed_vma) addend;
435b1e90 653
252b5132
RH		 654 if (saddend > 0x7f || saddend < 0)
655 return bfd_reloc_overflow;
435b1e90 656
252b5132
RH		 657 insn &= 0xff80;
658 insn |= addend;
659 break;
435b1e90 660
252b5132
RH		 661 case R_V850_TDA_4_5_OFFSET:
662 insn = bfd_get_16 (abfd, address);
663 addend += ((insn & 0xf) << 1);
435b1e90 664
252b5132 665 saddend = (bfd_signed_vma) addend;
435b1e90 666
252b5132
RH		 667 if (saddend > 0x1e || saddend < 0)
668 return bfd_reloc_overflow;
435b1e90 669
252b5132
RH		 670 if (addend & 1)
671 return bfd_reloc_dangerous;
435b1e90 672
252b5132
RH		 673 insn &= 0xfff0;
674 insn |= (addend >> 1);
675 break;
435b1e90 676
252b5132
RH		 677 case R_V850_TDA_4_4_OFFSET:
678 insn = bfd_get_16 (abfd, address);
679 addend += insn & 0xf;
435b1e90 680
252b5132 681 saddend = (bfd_signed_vma) addend;
435b1e90 682
252b5132
RH		 683 if (saddend > 0xf || saddend < 0)
684 return bfd_reloc_overflow;
435b1e90 685
252b5132
RH		 686 insn &= 0xfff0;
687 insn |= addend;
688 break;
435b1e90 689
1e50d24d
RS		 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
252b5132
RH		 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);
435b1e90 705
252b5132 706 saddend = (bfd_signed_vma) addend;
435b1e90 707
252b5132
RH		 708 if (saddend > 0x7fff || saddend < -0x8000)
709 return bfd_reloc_overflow;
435b1e90 710
252b5132
RH		 711 insn &= 0x0001ffdf;
712 insn |= (addend & 1) << 5;
dc810e39 713 insn |= (addend &~ (bfd_vma) 1) << 16;
435b1e90 714
dc810e39 715 bfd_put_32 (abfd, (bfd_vma) insn, address);
252b5132 716 return bfd_reloc_ok;
435b1e90 717
252b5132
RH		 718 case R_V850_CALLT_6_7_OFFSET:
719 insn = bfd_get_16 (abfd, address);
720 addend += ((insn & 0x3f) << 1);
435b1e90 721
252b5132 722 saddend = (bfd_signed_vma) addend;
435b1e90 723
252b5132
RH		 724 if (saddend > 0x7e || saddend < 0)
725 return bfd_reloc_overflow;
435b1e90 726
252b5132
RH		 727 if (addend & 1)
728 return bfd_reloc_dangerous;
435b1e90 729
252b5132
RH		 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
dc810e39 740 bfd_put_16 (abfd, (bfd_vma) insn, address);
252b5132
RH		 741 return bfd_reloc_ok;
742}
252b5132
RH		 743\f
744/* Insert the addend into the instruction. */
e12dd2ea 745
252b5132 746static bfd_reloc_status_type
47b0e7ad
NC		 747v850_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)
252b5132
RH		 754{
755 long relocation;
435b1e90 756
252b5132
RH		 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
e12dd2ea 760 or the addend is zero, so there is nothing to add into the instruction
252b5132 761 then just fixup the address and return. */
47b0e7ad 762 if (obfd != NULL
252b5132
RH		 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 }
435b1e90 770
252b5132
RH		 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? */
07515404 780 if (reloc->address > bfd_get_section_limit (abfd, isection))
252b5132 781 return bfd_reloc_outofrange;
435b1e90 782
4cc11e76 783 /* Work out which section the relocation is targeted at and the
252b5132 784 initial relocation command value. */
435b1e90 785
b34976b6 786 if (reloc->howto->pc_relative)
86aba9db
NC		 787 return bfd_reloc_ok;
788
252b5132
RH		 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;
435b1e90 794
252b5132
RH		 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;
435b1e90 799
435b1e90 800 reloc->addend = relocation;
252b5132
RH		 801 return bfd_reloc_ok;
802}
86aba9db
NC		 803
804/* This function is used for relocs which are only used
805 for relaxing, which the linker should otherwise ignore. */
806
807static bfd_reloc_status_type
47b0e7ad
NC		 808v850_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)
86aba9db
NC		 815{
816 if (output_bfd != NULL)
817 reloc_entry->address += input_section->output_offset;
818
819 return bfd_reloc_ok;
820}
47b0e7ad
NC		 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. */
823static 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
1279struct 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
1287static 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
1324static reloc_howto_type *
1325v850_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
1345static void
1346v850_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
1359static void
1360v850_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}
252b5132 1370\f
b34976b6 1371static bfd_boolean
47b0e7ad 1372v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
252b5132
RH		 1373{
1374 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1375 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1376}
252b5132 1377\f
5cec6941
NC		 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
252b5132 1383/* Perform a relocation as part of a final link. */
e12dd2ea 1384
252b5132 1385static bfd_reloc_status_type
47b0e7ad
NC		 1386v850_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)
252b5132 1397{
b34976b6
AM		 1398 unsigned int r_type = howto->type;
1399 bfd_byte *hit_data = contents + offset;
252b5132
RH		 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;
435b1e90 1409
252b5132
RH		 1410 case R_V850_22_PCREL:
1411 value -= (input_section->output_section->vma
1412 + input_section->output_offset
1413 + offset);
1414
232fb1a3
NC		 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;
435b1e90 1418
47b0e7ad 1419 /* Only the bottom 24 bits of the PC are valid. */
e12dd2ea 1420 value = SEXT24 (value);
252b5132 1421 break;
435b1e90 1422
e30ddb24
NC		 1423 case R_V850_REL32:
1424 value -= (input_section->output_section->vma
1425 + input_section->output_offset
1426 + offset);
1427 break;
1428
252b5132
RH		 1429 case R_V850_HI16_S:
1430 case R_V850_HI16:
1431 case R_V850_LO16:
1e50d24d 1432 case R_V850_LO16_SPLIT_OFFSET:
252b5132 1433 case R_V850_16:
e30ddb24 1434 case R_V850_ABS32:
252b5132
RH		 1435 case R_V850_8:
1436 break;
1437
435b1e90 1438 case R_V850_ZDA_15_16_OFFSET:
252b5132
RH		 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;
435b1e90 1443
252b5132
RH		 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;
435b1e90 1456
252b5132 1457 /* Get the value of __gp. */
b34976b6 1458 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
47b0e7ad 1459 if (h == NULL
252b5132 1460 || h->type != bfd_link_hash_defined)
5cec6941 1461 return bfd_reloc_gp_not_found;
252b5132
RH		 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;
435b1e90 1481
252b5132 1482 /* Get the value of __ep. */
b34976b6 1483 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
47b0e7ad 1484 if (h == NULL
252b5132 1485 || h->type != bfd_link_hash_defined)
5cec6941 1486 return bfd_reloc_ep_not_found;
252b5132
RH		 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;
435b1e90 1495
252b5132
RH		 1496 case R_V850_CALLT_6_7_OFFSET:
1497 {
1498 unsigned long ctbp;
1499 struct bfd_link_hash_entry * h;
435b1e90 1500
252b5132 1501 /* Get the value of __ctbp. */
b34976b6 1502 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
47b0e7ad 1503 if (h == NULL
252b5132 1504 || h->type != bfd_link_hash_defined)
5cec6941 1505 return bfd_reloc_ctbp_not_found;
252b5132
RH		 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;
435b1e90 1513
252b5132
RH		 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;
435b1e90 1521
252b5132 1522 /* Get the value of __ctbp. */
b34976b6 1523 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
47b0e7ad 1524 if (h == NULL
252b5132 1525 || h->type != bfd_link_hash_defined)
5cec6941 1526 return bfd_reloc_ctbp_not_found;
252b5132
RH		 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;
435b1e90 1536
252b5132
RH		 1537 case R_V850_NONE:
1538 case R_V850_GNU_VTINHERIT:
1539 case R_V850_GNU_VTENTRY:
86aba9db
NC		 1540 case R_V850_LONGCALL:
1541 case R_V850_LONGJUMP:
1542 case R_V850_ALIGN:
252b5132
RH		 1543 return bfd_reloc_ok;
1544
1545 default:
1546 return bfd_reloc_notsupported;
1547 }
1548
1549 /* Perform the relocation. */
435b1e90 1550 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
252b5132 1551}
252b5132
RH		 1552\f
1553/* Relocate an V850 ELF section. */
e12dd2ea 1554
b34976b6 1555static bfd_boolean
47b0e7ad
NC		 1556v850_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)
252b5132 1564{
b34976b6
AM		 1565 Elf_Internal_Shdr *symtab_hdr;
1566 struct elf_link_hash_entry **sym_hashes;
1567 Elf_Internal_Rela *rel;
1568 Elf_Internal_Rela *relend;
252b5132 1569
1049f94e 1570 if (info->relocatable)
b34976b6 1571 return TRUE;
f0fe0e16 1572
252b5132
RH		 1573 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1574 sym_hashes = elf_sym_hashes (input_bfd);
1575
252b5132
RH		 1576 /* Reset the list of remembered HI16S relocs to empty. */
1577 free_hi16s = previous_hi16s;
1578 previous_hi16s = NULL;
1579 hi16s_counter = 0;
435b1e90 1580
252b5132
RH		 1581 rel = relocs;
1582 relend = relocs + input_section->reloc_count;
1583 for (; rel < relend; rel++)
1584 {
b34976b6
AM		 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;
252b5132
RH		 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
252b5132 1601 /* This is a final link. */
f0fe0e16 1602 howto = v850_elf_howto_table + r_type;
252b5132
RH		 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];
8517fae7 1610 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 1611 }
1612 else
1613 {
59c2e50f 1614 bfd_boolean unresolved_reloc, warned;
435b1e90 1615
47b0e7ad
NC		 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. */
641bd093
NC		 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
b2a8e766
AM		 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);
252b5132
RH		 1632 }
1633
e12dd2ea 1634 /* FIXME: We should use the addend, but the COFF relocations don't. */
252b5132
RH		 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;
47b0e7ad 1644 const char * msg = NULL;
252b5132
RH		 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)
dfeffb9f
L		 1660 (info, (h ? &h->root : NULL), name, howto->name,
1661 (bfd_vma) 0, input_bfd, input_section,
1662 rel->r_offset)))
b34976b6 1663 return FALSE;
252b5132
RH		 1664 break;
1665
1666 case bfd_reloc_undefined:
1667 if (! ((*info->callbacks->undefined_symbol)
1668 (info, name, input_bfd, input_section,
b34976b6
AM		 1669 rel->r_offset, TRUE)))
1670 return FALSE;
252b5132
RH		 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
5cec6941 1685 case bfd_reloc_gp_not_found:
252b5132
RH		 1686 msg = _("could not locate special linker symbol __gp");
1687 goto common_error;
1688
5cec6941 1689 case bfd_reloc_ep_not_found:
252b5132
RH		 1690 msg = _("could not locate special linker symbol __ep");
1691 goto common_error;
1692
5cec6941 1693 case bfd_reloc_ctbp_not_found:
252b5132
RH		 1694 msg = _("could not locate special linker symbol __ctbp");
1695 goto common_error;
435b1e90 1696
252b5132
RH		 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)))
b34976b6 1705 return FALSE;
252b5132
RH		 1706 break;
1707 }
1708 }
1709 }
1710
b34976b6 1711 return TRUE;
252b5132
RH		 1712}
1713
252b5132 1714static asection *
47b0e7ad 1715v850_elf_gc_mark_hook (asection *sec,
07adf181 1716 struct bfd_link_info *info,
47b0e7ad
NC		 1717 Elf_Internal_Rela *rel,
1718 struct elf_link_hash_entry *h,
1719 Elf_Internal_Sym *sym)
252b5132
RH		 1720{
1721 if (h != NULL)
07adf181 1722 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH		 1723 {
1724 case R_V850_GNU_VTINHERIT:
1725 case R_V850_GNU_VTENTRY:
07adf181
AM		 1726 return NULL;
1727 }
9ad5cbcf 1728
07adf181 1729 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132 1730}
e12dd2ea 1731
252b5132 1732/* Set the right machine number. */
e12dd2ea 1733
b34976b6 1734static bfd_boolean
47b0e7ad 1735v850_elf_object_p (bfd *abfd)
252b5132
RH		 1736{
1737 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1738 {
1739 default:
250d94fd
AM		 1740 case E_V850_ARCH:
1741 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1742 break;
1743 case E_V850E_ARCH:
1744 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1745 break;
8ad30312
NC		 1746 case E_V850E1_ARCH:
1747 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1748 break;
252b5132 1749 }
b34976b6 1750 return TRUE;
252b5132
RH		 1751}
1752
1753/* Store the machine number in the flags field. */
e12dd2ea 1754
252b5132 1755static void
47b0e7ad
NC		 1756v850_elf_final_write_processing (bfd *abfd,
1757 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH		 1758{
1759 unsigned long val;
1760
1761 switch (bfd_get_mach (abfd))
1762 {
b34976b6 1763 default:
47b0e7ad
NC		 1764 case bfd_mach_v850: val = E_V850_ARCH; break;
1765 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1766 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
252b5132
RH		 1767 }
1768
1769 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1770 elf_elfheader (abfd)->e_flags |= val;
1771}
1772
435b1e90 1773/* Function to keep V850 specific file flags. */
e12dd2ea 1774
b34976b6 1775static bfd_boolean
47b0e7ad 1776v850_elf_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 1777{
1778 BFD_ASSERT (!elf_flags_init (abfd)
1779 || elf_elfheader (abfd)->e_flags == flags);
1780
1781 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM		 1782 elf_flags_init (abfd) = TRUE;
1783 return TRUE;
252b5132
RH		 1784}
1785
e12dd2ea
NC		 1786/* Merge backend specific data from an object file
1787 to the output object file when linking. */
47b0e7ad 1788
b34976b6 1789static bfd_boolean
47b0e7ad 1790v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 1791{
1792 flagword out_flags;
1793 flagword in_flags;
1794
1795 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1796 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 1797 return TRUE;
252b5132
RH		 1798
1799 in_flags = elf_elfheader (ibfd)->e_flags;
1800 out_flags = elf_elfheader (obfd)->e_flags;
1801
1802 if (! elf_flags_init (obfd))
1803 {
1804 /* If the input is the default architecture then do not
1805 bother setting the flags for the output architecture,
1806 instead allow future merges to do this. If no future
1807 merges ever set these flags then they will retain their
1808 unitialised values, which surprise surprise, correspond
1809 to the default values. */
1810 if (bfd_get_arch_info (ibfd)->the_default)
b34976b6 1811 return TRUE;
435b1e90 1812
b34976b6 1813 elf_flags_init (obfd) = TRUE;
252b5132
RH		 1814 elf_elfheader (obfd)->e_flags = in_flags;
1815
1816 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1817 && bfd_get_arch_info (obfd)->the_default)
e12dd2ea 1818 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
252b5132 1819
b34976b6 1820 return TRUE;
252b5132
RH		 1821 }
1822
1823 /* Check flag compatibility. */
1824 if (in_flags == out_flags)
b34976b6 1825 return TRUE;
252b5132
RH		 1826
1827 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1828 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
8ad30312
NC		 1829 {
1830 /* Allow v850e1 binaries to be linked with v850e binaries.
1831 Set the output binary to v850e. */
1832 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1833 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1834 return TRUE;
1835
1836 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1837 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1838 {
1839 elf_elfheader (obfd)->e_flags =
1840 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1841 return TRUE;
1842 }
1843
d003868e
AM		 1844 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
1845 ibfd);
8ad30312 1846 }
252b5132 1847
b34976b6 1848 return TRUE;
252b5132 1849}
e12dd2ea
NC		 1850
1851/* Display the flags field. */
252b5132 1852
b34976b6 1853static bfd_boolean
47b0e7ad 1854v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132
RH		 1855{
1856 FILE * file = (FILE *) ptr;
435b1e90 1857
252b5132 1858 BFD_ASSERT (abfd != NULL && ptr != NULL);
435b1e90 1859
252b5132 1860 _bfd_elf_print_private_bfd_data (abfd, ptr);
435b1e90 1861
252b5132
RH		 1862 /* xgettext:c-format */
1863 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
435b1e90 1864
252b5132
RH		 1865 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1866 {
1867 default:
1868 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
47b0e7ad 1869 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
8ad30312 1870 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
252b5132 1871 }
435b1e90 1872
252b5132 1873 fputc ('\n', file);
435b1e90 1874
b34976b6 1875 return TRUE;
252b5132
RH		 1876}
1877
1878/* V850 ELF uses four common sections. One is the usual one, and the
1879 others are for (small) objects in one of the special data areas:
1880 small, tiny and zero. All the objects are kept together, and then
1881 referenced via the gp register, the ep register or the r0 register
1882 respectively, which yields smaller, faster assembler code. This
1883 approach is copied from elf32-mips.c. */
1884
1885static asection v850_elf_scom_section;
1886static asymbol v850_elf_scom_symbol;
1887static asymbol * v850_elf_scom_symbol_ptr;
1888static asection v850_elf_tcom_section;
1889static asymbol v850_elf_tcom_symbol;
1890static asymbol * v850_elf_tcom_symbol_ptr;
1891static asection v850_elf_zcom_section;
1892static asymbol v850_elf_zcom_symbol;
1893static asymbol * v850_elf_zcom_symbol_ptr;
1894
e12dd2ea
NC		 1895/* Given a BFD section, try to locate the
1896 corresponding ELF section index. */
252b5132 1897
b34976b6 1898static bfd_boolean
47b0e7ad
NC		 1899v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1900 asection *sec,
1901 int *retval)
252b5132
RH		 1902{
1903 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1904 *retval = SHN_V850_SCOMMON;
1905 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
1906 *retval = SHN_V850_TCOMMON;
1907 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
1908 *retval = SHN_V850_ZCOMMON;
1909 else
b34976b6 1910 return FALSE;
435b1e90 1911
b34976b6 1912 return TRUE;
252b5132
RH		 1913}
1914
1915/* Handle the special V850 section numbers that a symbol may use. */
1916
1917static void
47b0e7ad 1918v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
252b5132
RH		 1919{
1920 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
9ad5cbcf 1921 unsigned int indx;
435b1e90 1922
9ad5cbcf 1923 indx = elfsym->internal_elf_sym.st_shndx;
252b5132
RH		 1924
1925 /* If the section index is an "ordinary" index, then it may
1926 refer to a v850 specific section created by the assembler.
1927 Check the section's type and change the index it matches.
435b1e90 1928
252b5132 1929 FIXME: Should we alter the st_shndx field as well ? */
435b1e90 1930
9ad5cbcf
AM		 1931 if (indx < elf_numsections (abfd))
1932 switch (elf_elfsections(abfd)[indx]->sh_type)
252b5132
RH		 1933 {
1934 case SHT_V850_SCOMMON:
9ad5cbcf 1935 indx = SHN_V850_SCOMMON;
252b5132 1936 break;
435b1e90 1937
252b5132 1938 case SHT_V850_TCOMMON:
9ad5cbcf 1939 indx = SHN_V850_TCOMMON;
252b5132 1940 break;
435b1e90 1941
252b5132 1942 case SHT_V850_ZCOMMON:
9ad5cbcf 1943 indx = SHN_V850_ZCOMMON;
252b5132 1944 break;
435b1e90 1945
252b5132
RH		 1946 default:
1947 break;
1948 }
435b1e90 1949
9ad5cbcf 1950 switch (indx)
252b5132
RH		 1951 {
1952 case SHN_V850_SCOMMON:
1953 if (v850_elf_scom_section.name == NULL)
1954 {
1955 /* Initialize the small common section. */
1956 v850_elf_scom_section.name = ".scommon";
1957 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
1958 v850_elf_scom_section.output_section = & v850_elf_scom_section;
1959 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
1960 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
1961 v850_elf_scom_symbol.name = ".scommon";
1962 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
1963 v850_elf_scom_symbol.section = & v850_elf_scom_section;
1964 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
1965 }
1966 asym->section = & v850_elf_scom_section;
1967 asym->value = elfsym->internal_elf_sym.st_size;
1968 break;
435b1e90 1969
252b5132
RH		 1970 case SHN_V850_TCOMMON:
1971 if (v850_elf_tcom_section.name == NULL)
1972 {
1973 /* Initialize the tcommon section. */
1974 v850_elf_tcom_section.name = ".tcommon";
1975 v850_elf_tcom_section.flags = SEC_IS_COMMON;
1976 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
1977 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
1978 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
1979 v850_elf_tcom_symbol.name = ".tcommon";
1980 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
1981 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
1982 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
1983 }
1984 asym->section = & v850_elf_tcom_section;
1985 asym->value = elfsym->internal_elf_sym.st_size;
1986 break;
1987
1988 case SHN_V850_ZCOMMON:
1989 if (v850_elf_zcom_section.name == NULL)
1990 {
1991 /* Initialize the zcommon section. */
1992 v850_elf_zcom_section.name = ".zcommon";
1993 v850_elf_zcom_section.flags = SEC_IS_COMMON;
1994 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
1995 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
1996 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
1997 v850_elf_zcom_symbol.name = ".zcommon";
1998 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
1999 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2000 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2001 }
2002 asym->section = & v850_elf_zcom_section;
2003 asym->value = elfsym->internal_elf_sym.st_size;
2004 break;
2005 }
2006}
2007
2008/* Hook called by the linker routine which adds symbols from an object
2009 file. We must handle the special v850 section numbers here. */
2010
b34976b6 2011static bfd_boolean
47b0e7ad
NC		 2012v850_elf_add_symbol_hook (bfd *abfd,
2013 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2014 Elf_Internal_Sym *sym,
2015 const char **namep ATTRIBUTE_UNUSED,
2016 flagword *flagsp ATTRIBUTE_UNUSED,
2017 asection **secp,
2018 bfd_vma *valp)
252b5132 2019{
9ad5cbcf 2020 unsigned int indx = sym->st_shndx;
435b1e90 2021
252b5132
RH		 2022 /* If the section index is an "ordinary" index, then it may
2023 refer to a v850 specific section created by the assembler.
2024 Check the section's type and change the index it matches.
435b1e90 2025
252b5132 2026 FIXME: Should we alter the st_shndx field as well ? */
435b1e90 2027
9ad5cbcf
AM		 2028 if (indx < elf_numsections (abfd))
2029 switch (elf_elfsections(abfd)[indx]->sh_type)
252b5132
RH		 2030 {
2031 case SHT_V850_SCOMMON:
9ad5cbcf 2032 indx = SHN_V850_SCOMMON;
252b5132 2033 break;
435b1e90 2034
252b5132 2035 case SHT_V850_TCOMMON:
9ad5cbcf 2036 indx = SHN_V850_TCOMMON;
252b5132 2037 break;
435b1e90 2038
252b5132 2039 case SHT_V850_ZCOMMON:
9ad5cbcf 2040 indx = SHN_V850_ZCOMMON;
252b5132 2041 break;
435b1e90 2042
252b5132
RH		 2043 default:
2044 break;
2045 }
435b1e90 2046
9ad5cbcf 2047 switch (indx)
252b5132
RH		 2048 {
2049 case SHN_V850_SCOMMON:
2050 *secp = bfd_make_section_old_way (abfd, ".scommon");
2051 (*secp)->flags |= SEC_IS_COMMON;
2052 *valp = sym->st_size;
2053 break;
435b1e90 2054
252b5132
RH		 2055 case SHN_V850_TCOMMON:
2056 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2057 (*secp)->flags |= SEC_IS_COMMON;
2058 *valp = sym->st_size;
2059 break;
435b1e90 2060
252b5132
RH		 2061 case SHN_V850_ZCOMMON:
2062 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2063 (*secp)->flags |= SEC_IS_COMMON;
2064 *valp = sym->st_size;
2065 break;
2066 }
2067
b34976b6 2068 return TRUE;
252b5132
RH		 2069}
2070
b34976b6 2071static bfd_boolean
47b0e7ad
NC		 2072v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2073 const char *name ATTRIBUTE_UNUSED,
2074 Elf_Internal_Sym *sym,
2075 asection *input_sec,
2076 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
252b5132
RH		 2077{
2078 /* If we see a common symbol, which implies a relocatable link, then
2079 if a symbol was in a special common section in an input file, mark
2080 it as a special common in the output file. */
435b1e90 2081
252b5132
RH		 2082 if (sym->st_shndx == SHN_COMMON)
2083 {
2084 if (strcmp (input_sec->name, ".scommon") == 0)
2085 sym->st_shndx = SHN_V850_SCOMMON;
2086 else if (strcmp (input_sec->name, ".tcommon") == 0)
2087 sym->st_shndx = SHN_V850_TCOMMON;
2088 else if (strcmp (input_sec->name, ".zcommon") == 0)
2089 sym->st_shndx = SHN_V850_ZCOMMON;
2090 }
2091
b34976b6 2092 return TRUE;
252b5132
RH		 2093}
2094
b34976b6 2095static bfd_boolean
6dc132d9
L		 2096v850_elf_section_from_shdr (bfd *abfd,
2097 Elf_Internal_Shdr *hdr,
2098 const char *name,
2099 int shindex)
252b5132
RH		 2100{
2101 /* There ought to be a place to keep ELF backend specific flags, but
2102 at the moment there isn't one. We just keep track of the
2103 sections by their name, instead. */
2104
6dc132d9 2105 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
b34976b6 2106 return FALSE;
252b5132
RH		 2107
2108 switch (hdr->sh_type)
2109 {
2110 case SHT_V850_SCOMMON:
2111 case SHT_V850_TCOMMON:
2112 case SHT_V850_ZCOMMON:
2113 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2114 (bfd_get_section_flags (abfd,
2115 hdr->bfd_section)
2116 | SEC_IS_COMMON)))
b34976b6 2117 return FALSE;
252b5132
RH		 2118 }
2119
b34976b6 2120 return TRUE;
252b5132
RH		 2121}
2122
e12dd2ea
NC		 2123/* Set the correct type for a V850 ELF section. We do this
2124 by the section name, which is a hack, but ought to work. */
2125
b34976b6 2126static bfd_boolean
47b0e7ad
NC		 2127v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2128 Elf_Internal_Shdr *hdr,
2129 asection *sec)
252b5132 2130{
47b0e7ad 2131 const char * name;
252b5132
RH		 2132
2133 name = bfd_get_section_name (abfd, sec);
2134
2135 if (strcmp (name, ".scommon") == 0)
47b0e7ad 2136 hdr->sh_type = SHT_V850_SCOMMON;
252b5132 2137 else if (strcmp (name, ".tcommon") == 0)
47b0e7ad 2138 hdr->sh_type = SHT_V850_TCOMMON;
252b5132
RH		 2139 else if (strcmp (name, ".zcommon") == 0)
2140 hdr->sh_type = SHT_V850_ZCOMMON;
435b1e90 2141
b34976b6 2142 return TRUE;
252b5132 2143}
86aba9db
NC		 2144
2145/* Delete some bytes from a section while relaxing. */
2146
b34976b6 2147static bfd_boolean
47b0e7ad
NC		 2148v850_elf_relax_delete_bytes (bfd *abfd,
2149 asection *sec,
2150 bfd_vma addr,
2151 bfd_vma toaddr,
2152 int count)
86aba9db 2153{
b34976b6
AM		 2154 Elf_Internal_Shdr *symtab_hdr;
2155 Elf32_External_Sym *extsyms;
2156 Elf32_External_Sym *esym;
2157 Elf32_External_Sym *esymend;
2158 int index;
2159 unsigned int sec_shndx;
2160 bfd_byte *contents;
2161 Elf_Internal_Rela *irel;
2162 Elf_Internal_Rela *irelend;
2163 struct elf_link_hash_entry *sym_hash;
2164 Elf_Internal_Shdr *shndx_hdr;
2165 Elf_External_Sym_Shndx *shndx;
86aba9db
NC		 2166
2167 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2168 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2169
2170 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2171
2172 contents = elf_section_data (sec)->this_hdr.contents;
2173
2174 /* The deletion must stop at the next ALIGN reloc for an alignment
2175 power larger than the number of bytes we are deleting. */
2176
2177 /* Actually delete the bytes. */
2178#if (DEBUG_RELAX & 2)
2179 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2180 sec->name, addr, toaddr, count );
2181#endif
2182 memmove (contents + addr, contents + addr + count,
2183 toaddr - addr - count);
2184 memset (contents + toaddr-count, 0, count);
2185
2186 /* Adjust all the relocs. */
2187 irel = elf_section_data (sec)->relocs;
2188 irelend = irel + sec->reloc_count;
2189 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2190 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2191
2192 for (; irel < irelend; irel++)
2193 {
2194 bfd_vma raddr, paddr, symval;
2195 Elf_Internal_Sym isym;
2196
2197 /* Get the new reloc address. */
2198 raddr = irel->r_offset;
2199 if ((raddr >= (addr + count) && raddr < toaddr))
b34976b6 2200 irel->r_offset -= count;
86aba9db
NC		 2201
2202 if (raddr >= addr && raddr < addr + count)
2203 {
2204 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2205 (int) R_V850_NONE);
2206 continue;
2207 }
b34976b6 2208
86aba9db
NC		 2209 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2210 continue;
2211
2212 bfd_elf32_swap_symbol_in (abfd,
2213 extsyms + ELF32_R_SYM (irel->r_info),
2214 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2215 & isym);
b34976b6 2216
86aba9db
NC		 2217 if (isym.st_shndx != sec_shndx)
2218 continue;
2219
2220 /* Get the value of the symbol referred to by the reloc. */
2221 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2222 {
2223 symval = isym.st_value;
2224#if (DEBUG_RELAX & 2)
2225 {
2226 char * name = bfd_elf_string_from_elf_section
2227 (abfd, symtab_hdr->sh_link, isym.st_name);
2228 fprintf (stderr,
2229 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2230 sec->name, name, isym.st_name,
2231 sec->output_section->vma, sec->output_offset,
2232 isym.st_value, irel->r_addend);
2233 }
2234#endif
2235 }
2236 else
2237 {
2238 unsigned long indx;
2239 struct elf_link_hash_entry * h;
2240
2241 /* An external symbol. */
2242 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2243
2244 h = elf_sym_hashes (abfd) [indx];
2245 BFD_ASSERT (h != NULL);
2246
2247 symval = h->root.u.def.value;
2248#if (DEBUG_RELAX & 2)
2249 fprintf (stderr,
2250 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2251 sec->name, h->root.root.string, h->root.u.def.value,
2252 sec->output_section->vma, sec->output_offset, irel->r_addend);
2253#endif
2254 }
b34976b6 2255
86aba9db 2256 paddr = symval + irel->r_addend;
b34976b6 2257
86aba9db
NC		 2258 if ( (symval >= addr + count && symval < toaddr)
2259 && (paddr < addr + count || paddr >= toaddr))
2260 irel->r_addend += count;
2261 else if ( (symval < addr + count || symval >= toaddr)
2262 && (paddr >= addr + count && paddr < toaddr))
2263 irel->r_addend -= count;
2264 }
2265
2266 /* Adjust the local symbols defined in this section. */
2267 esym = extsyms;
2268 esymend = esym + symtab_hdr->sh_info;
2269
2270 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2271 {
2272 Elf_Internal_Sym isym;
2273
2274 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2275
2276 if (isym.st_shndx == sec_shndx
2277 && isym.st_value >= addr + count
2278 && isym.st_value < toaddr)
2279 {
2280 isym.st_value -= count;
2281
2282 if (isym.st_value + isym.st_size >= toaddr)
b34976b6
AM		 2283 isym.st_size += count;
2284
63a23799 2285 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2286 }
2287 else if (isym.st_shndx == sec_shndx
2288 && isym.st_value < addr + count)
2289 {
2290 if (isym.st_value+isym.st_size >= addr + count
2291 && isym.st_value+isym.st_size < toaddr)
2292 isym.st_size -= count;
2293
2294 if (isym.st_value >= addr
2295 && isym.st_value < addr + count)
2296 isym.st_value = addr;
2297
63a23799 2298 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2299 }
2300 }
2301
2302 /* Now adjust the global symbols defined in this section. */
2303 esym = extsyms + symtab_hdr->sh_info;
2304 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2305
2306 for (index = 0; esym < esymend; esym ++, index ++)
2307 {
2308 Elf_Internal_Sym isym;
2309
2310 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2311 sym_hash = elf_sym_hashes (abfd) [index];
2312
2313 if (isym.st_shndx == sec_shndx
2314 && ((sym_hash)->root.type == bfd_link_hash_defined
2315 || (sym_hash)->root.type == bfd_link_hash_defweak)
2316 && (sym_hash)->root.u.def.section == sec
2317 && (sym_hash)->root.u.def.value >= addr + count
2318 && (sym_hash)->root.u.def.value < toaddr)
2319 {
2320 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2321 {
2322 isym.st_size += count;
63a23799 2323 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2324 }
2325
2326 (sym_hash)->root.u.def.value -= count;
2327 }
2328 else if (isym.st_shndx == sec_shndx
2329 && ((sym_hash)->root.type == bfd_link_hash_defined
2330 || (sym_hash)->root.type == bfd_link_hash_defweak)
2331 && (sym_hash)->root.u.def.section == sec
2332 && (sym_hash)->root.u.def.value < addr + count)
2333 {
2334 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2335 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2336 isym.st_size -= count;
2337
2338 if ((sym_hash)->root.u.def.value >= addr
2339 && (sym_hash)->root.u.def.value < addr + count)
2340 (sym_hash)->root.u.def.value = addr;
2341
63a23799 2342 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2343 }
2344
2345 if (shndx)
2346 ++ shndx;
2347 }
2348
b34976b6 2349 return TRUE;
86aba9db
NC		 2350}
2351
2352#define NOP_OPCODE (0x0000)
b34976b6 2353#define MOVHI 0x0640 /* 4byte */
86aba9db 2354#define MOVHI_MASK 0x07e0
b34976b6 2355#define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
86aba9db
NC		 2356#define MOVHI_R2(insn) ((insn) >> 11)
2357#define MOVEA 0x0620 /* 2byte */
2358#define MOVEA_MASK 0x07e0
2359#define MOVEA_R1(insn) ((insn) & 0x1f)
2360#define MOVEA_R2(insn) ((insn) >> 11)
2361#define JARL_4 0x00040780 /* 4byte */
2362#define JARL_4_MASK 0xFFFF07FF
2363#define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2364#define ADD_I 0x0240 /* 2byte */
2365#define ADD_I_MASK 0x07e0
2366#define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2367#define ADD_R2(insn) ((insn) >> 11)
2368#define JMP_R 0x0060 /* 2byte */
2369#define JMP_R_MASK 0xFFE0
2370#define JMP_R1(insn) ((insn) & 0x1f)
2371
b34976b6 2372static bfd_boolean
47b0e7ad
NC		 2373v850_elf_relax_section (bfd *abfd,
2374 asection *sec,
2375 struct bfd_link_info *link_info,
2376 bfd_boolean *again)
86aba9db 2377{
b34976b6
AM		 2378 Elf_Internal_Shdr *symtab_hdr;
2379 Elf_Internal_Rela *internal_relocs;
2380 Elf_Internal_Rela *irel;
2381 Elf_Internal_Rela *irelend;
2382 Elf_Internal_Rela *irelalign = NULL;
2383 Elf_Internal_Sym *isymbuf = NULL;
2384 bfd_byte *contents = NULL;
2385 bfd_vma addr = 0;
2386 bfd_vma toaddr;
2387 int align_pad_size = 0;
2388 bfd_boolean result = TRUE;
2389
2390 *again = FALSE;
86aba9db 2391
1049f94e 2392 if (link_info->relocatable
86aba9db
NC		 2393 || (sec->flags & SEC_RELOC) == 0
2394 || sec->reloc_count == 0)
b34976b6 2395 return TRUE;
86aba9db 2396
86aba9db
NC		 2397 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2398
45d6a902 2399 internal_relocs = (_bfd_elf_link_read_relocs
47b0e7ad 2400 (abfd, sec, NULL, NULL, link_info->keep_memory));
86aba9db
NC		 2401 if (internal_relocs == NULL)
2402 goto error_return;
86aba9db
NC		 2403
2404 irelend = internal_relocs + sec->reloc_count;
b34976b6 2405
eea6121a 2406 while (addr < sec->size)
86aba9db 2407 {
eea6121a 2408 toaddr = sec->size;
86aba9db
NC		 2409
2410 for (irel = internal_relocs; irel < irelend; irel ++)
2411 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2412 && irel->r_offset > addr
2413 && irel->r_offset < toaddr)
2414 toaddr = irel->r_offset;
b34976b6 2415
86aba9db
NC		 2416#ifdef DEBUG_RELAX
2417 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2418 addr, toaddr, align_pad_size);
2419#endif
2420 if (irelalign)
2421 {
2422 bfd_vma alignto;
2423 bfd_vma alignmoveto;
2424
2425 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2426 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2427
2428 if (alignmoveto < alignto)
2429 {
2430 unsigned int i;
2431
2432 align_pad_size = alignto - alignmoveto;
2433#ifdef DEBUG_RELAX
2434 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2435 alignmoveto, toaddr, align_pad_size);
2436#endif
2437 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2438 toaddr, align_pad_size))
b34976b6 2439 goto error_return;
86aba9db
NC		 2440
2441 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2442 (i + 1) < toaddr; i += 2)
2443 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2444
2445 addr = alignmoveto;
2446 }
2447 else
2448 align_pad_size = 0;
2449 }
2450
2451 for (irel = internal_relocs; irel < irelend; irel++)
2452 {
b34976b6
AM		 2453 bfd_vma laddr;
2454 bfd_vma addend;
2455 bfd_vma symval;
2456 int insn[5];
2457 int no_match = -1;
2458 Elf_Internal_Rela *hi_irelfn;
2459 Elf_Internal_Rela *lo_irelfn;
2460 Elf_Internal_Rela *irelcall;
2461 bfd_signed_vma foff;
86aba9db
NC		 2462
2463 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2464 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2465 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2466 continue;
2467
2468#ifdef DEBUG_RELAX
2469 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2470 irel->r_info,
2471 irel->r_offset,
2472 irel->r_addend );
2473#endif
2474
2475 /* Get the section contents. */
2476 if (contents == NULL)
2477 {
2478 if (elf_section_data (sec)->this_hdr.contents != NULL)
2479 contents = elf_section_data (sec)->this_hdr.contents;
2480 else
2481 {
47b0e7ad 2482 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
86aba9db
NC		 2483 goto error_return;
2484 }
2485 }
2486
5cec6941
NC		 2487 /* Read this BFD's local symbols if we haven't done so already. */
2488 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
86aba9db 2489 {
5cec6941
NC		 2490 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2491 if (isymbuf == NULL)
2492 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2493 symtab_hdr->sh_info, 0,
2494 NULL, NULL, NULL);
2495 if (isymbuf == NULL)
2496 goto error_return;
86aba9db
NC		 2497 }
2498
2499 laddr = irel->r_offset;
2500
2501 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2502 {
2503 /* Check code for -mlong-calls output. */
eea6121a 2504 if (laddr + 16 <= (bfd_vma) sec->size)
86aba9db
NC		 2505 {
2506 insn[0] = bfd_get_16 (abfd, contents + laddr);
2507 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2508 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2509 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2510 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
b34976b6 2511
86aba9db
NC		 2512 if ((insn[0] & MOVHI_MASK) != MOVHI
2513 || MOVHI_R1 (insn[0]) != 0)
2514 no_match = 0;
2515
2516 if (no_match < 0
2517 && ((insn[1] & MOVEA_MASK) != MOVEA
2518 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2519 no_match = 1;
2520
2521 if (no_match < 0
2522 && (insn[2] & JARL_4_MASK) != JARL_4)
2523 no_match = 2;
2524
2525 if (no_match < 0
2526 && ((insn[3] & ADD_I_MASK) != ADD_I
2527 || ADD_I5 (insn[3]) != 4
2528 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2529 no_match = 3;
2530
2531 if (no_match < 0
2532 && ((insn[4] & JMP_R_MASK) != JMP_R
2533 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2534 no_match = 4;
2535 }
2536 else
2537 {
2538 ((*_bfd_error_handler)
2539 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2540 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2541
2542 continue;
2543 }
2544
2545 if (no_match >= 0)
2546 {
2547 ((*_bfd_error_handler)
2548 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2549 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2550
2551 continue;
b34976b6 2552 }
86aba9db
NC		 2553
2554 /* Get the reloc for the address from which the register is
2555 being loaded. This reloc will tell us which function is
2556 actually being called. */
2557 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2558 if (hi_irelfn->r_offset == laddr + 2
b34976b6 2559 && ELF32_R_TYPE (hi_irelfn->r_info)
86aba9db
NC		 2560 == (int) R_V850_HI16_S)
2561 break;
2562
2563 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2564 if (lo_irelfn->r_offset == laddr + 6
2565 && ELF32_R_TYPE (lo_irelfn->r_info)
2566 == (int) R_V850_LO16)
2567 break;
2568
2569 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2570 if (irelcall->r_offset == laddr + 8
2571 && ELF32_R_TYPE (irelcall->r_info)
2572 == (int) R_V850_22_PCREL)
2573 break;
2574
2575 if ( hi_irelfn == irelend
2576 || lo_irelfn == irelend
2577 || irelcall == irelend)
2578 {
2579 ((*_bfd_error_handler)
2580 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2581 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2582
2583 continue;
2584 }
b34976b6 2585
86aba9db
NC		 2586 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2587 {
5cec6941 2588 Elf_Internal_Sym * isym;
86aba9db
NC		 2589
2590 /* A local symbol. */
5cec6941 2591 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
86aba9db 2592
5cec6941 2593 symval = isym->st_value;
86aba9db
NC		 2594 }
2595 else
2596 {
2597 unsigned long indx;
2598 struct elf_link_hash_entry * h;
2599
2600 /* An external symbol. */
2601 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2602 h = elf_sym_hashes (abfd)[indx];
2603 BFD_ASSERT (h != NULL);
2604
2605 if ( h->root.type != bfd_link_hash_defined
2606 && h->root.type != bfd_link_hash_defweak)
2607 /* This appears to be a reference to an undefined
2608 symbol. Just ignore it--it will be caught by the
2609 regular reloc processing. */
2610 continue;
2611
2612 symval = h->root.u.def.value;
2613 }
2614
2615 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2616 {
2617 ((*_bfd_error_handler)
2618 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2619 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2620
2621 continue;
2622 }
2623
2624 /* Get the value of the symbol referred to by the reloc. */
2625 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2626 {
b34976b6
AM		 2627 Elf_Internal_Sym *isym;
2628 asection *sym_sec;
86aba9db
NC		 2629
2630 /* A local symbol. */
5cec6941 2631 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
b34976b6 2632
5cec6941 2633 if (isym->st_shndx == SHN_UNDEF)
86aba9db 2634 sym_sec = bfd_und_section_ptr;
5cec6941 2635 else if (isym->st_shndx == SHN_ABS)
86aba9db 2636 sym_sec = bfd_abs_section_ptr;
5cec6941 2637 else if (isym->st_shndx == SHN_COMMON)
86aba9db
NC		 2638 sym_sec = bfd_com_section_ptr;
2639 else
5cec6941
NC		 2640 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2641 symval = (isym->st_value
86aba9db
NC		 2642 + sym_sec->output_section->vma
2643 + sym_sec->output_offset);
2644 }
2645 else
2646 {
2647 unsigned long indx;
b34976b6 2648 struct elf_link_hash_entry *h;
86aba9db
NC		 2649
2650 /* An external symbol. */
5cec6941 2651 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
86aba9db
NC		 2652 h = elf_sym_hashes (abfd)[indx];
2653 BFD_ASSERT (h != NULL);
2654
2655 if ( h->root.type != bfd_link_hash_defined
2656 && h->root.type != bfd_link_hash_defweak)
2657 /* This appears to be a reference to an undefined
2658 symbol. Just ignore it--it will be caught by the
2659 regular reloc processing. */
2660 continue;
2661
2662 symval = (h->root.u.def.value
2663 + h->root.u.def.section->output_section->vma
2664 + h->root.u.def.section->output_offset);
2665 }
2666
2667 addend = irel->r_addend;
2668
2669 foff = (symval + addend
2670 - (irel->r_offset
2671 + sec->output_section->vma
2672 + sec->output_offset
2673 + 4));
2674#ifdef DEBUG_RELAX
2675 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2676 irel->r_offset,
2677 (irel->r_offset
2678 + sec->output_section->vma
2679 + sec->output_offset),
2680 symval, addend, foff);
2681#endif
2682
2683 if (foff < -0x100000 || foff >= 0x100000)
2684 /* After all that work, we can't shorten this function call. */
2685 continue;
2686
2687 /* For simplicity of coding, we are going to modify the section
2688 contents, the section relocs, and the BFD symbol table. We
2689 must tell the rest of the code not to free up this
2690 information. It would be possible to instead create a table
2691 of changes which have to be made, as is done in coff-mips.c;
2692 that would be more work, but would require less memory when
2693 the linker is run. */
2694 elf_section_data (sec)->relocs = internal_relocs;
86aba9db 2695 elf_section_data (sec)->this_hdr.contents = contents;
5cec6941 2696 symtab_hdr->contents = (bfd_byte *) isymbuf;
b34976b6 2697
86aba9db
NC		 2698 /* Replace the long call with a jarl. */
2699 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2700
2701 addend = 0;
2702
2703 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2704 /* If this needs to be changed because of future relaxing,
2705 it will be handled here like other internal IND12W
2706 relocs. */
2707 bfd_put_32 (abfd,
2708 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2709 contents + irel->r_offset);
2710 else
2711 /* We can't fully resolve this yet, because the external
2712 symbol value may be changed by future relaxing.
2713 We let the final link phase handle it. */
2714 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2715 contents + irel->r_offset);
2716
b34976b6 2717 hi_irelfn->r_info =
86aba9db
NC		 2718 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2719 lo_irelfn->r_info =
2720 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2721 irelcall->r_info =
2722 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2723
2724 if (! v850_elf_relax_delete_bytes (abfd, sec,
2725 irel->r_offset + 4, toaddr, 12))
2726 goto error_return;
2727
2728 align_pad_size += 12;
2729 }
2730 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2731 {
2732 /* Check code for -mlong-jumps output. */
eea6121a 2733 if (laddr + 10 <= (bfd_vma) sec->size)
86aba9db
NC		 2734 {
2735 insn[0] = bfd_get_16 (abfd, contents + laddr);
2736 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2737 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2738
2739 if ((insn[0] & MOVHI_MASK) != MOVHI
2740 || MOVHI_R1 (insn[0]) != 0)
2741 no_match = 0;
2742
2743 if (no_match < 0
2744 && ((insn[1] & MOVEA_MASK) != MOVEA
2745 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2746 no_match = 1;
2747
2748 if (no_match < 0
2749 && ((insn[2] & JMP_R_MASK) != JMP_R
2750 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2751 no_match = 4;
2752 }
2753 else
2754 {
2755 ((*_bfd_error_handler)
2756 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2757 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2758
2759 continue;
2760 }
2761
2762 if (no_match >= 0)
2763 {
2764 ((*_bfd_error_handler)
2765 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2766 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2767
2768 continue;
2769 }
2770
2771 /* Get the reloc for the address from which the register is
2772 being loaded. This reloc will tell us which function is
2773 actually being called. */
2774 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2775 if (hi_irelfn->r_offset == laddr + 2
b34976b6 2776 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
86aba9db
NC		 2777 break;
2778
2779 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2780 if (lo_irelfn->r_offset == laddr + 6
2781 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2782 break;
2783
2784 if ( hi_irelfn == irelend
2785 || lo_irelfn == irelend)
2786 {
2787 ((*_bfd_error_handler)
2788 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2789 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2790
2791 continue;
2792 }
b34976b6 2793
86aba9db
NC		 2794 /* Get the value of the symbol referred to by the reloc. */
2795 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2796 {
5cec6941
NC		 2797 Elf_Internal_Sym * isym;
2798 asection * sym_sec;
86aba9db
NC		 2799
2800 /* A local symbol. */
5cec6941
NC		 2801 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2802
2803 if (isym->st_shndx == SHN_UNDEF)
86aba9db 2804 sym_sec = bfd_und_section_ptr;
5cec6941 2805 else if (isym->st_shndx == SHN_ABS)
86aba9db 2806 sym_sec = bfd_abs_section_ptr;
5cec6941 2807 else if (isym->st_shndx == SHN_COMMON)
86aba9db
NC		 2808 sym_sec = bfd_com_section_ptr;
2809 else
5cec6941
NC		 2810 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2811 symval = (isym->st_value
86aba9db
NC		 2812 + sym_sec->output_section->vma
2813 + sym_sec->output_offset);
2814#ifdef DEBUG_RELAX
2815 {
2816 char * name = bfd_elf_string_from_elf_section
5cec6941 2817 (abfd, symtab_hdr->sh_link, isym->st_name);
86aba9db
NC		 2818
2819 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
5cec6941
NC		 2820 sym_sec->name, name, isym->st_name,
2821 sym_sec->output_section->vma,
2822 sym_sec->output_offset,
2823 isym->st_value, irel->r_addend);
86aba9db
NC		 2824 }
2825#endif
2826 }
2827 else
2828 {
2829 unsigned long indx;
2830 struct elf_link_hash_entry * h;
2831
2832 /* An external symbol. */
2833 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2834 h = elf_sym_hashes (abfd)[indx];
2835 BFD_ASSERT (h != NULL);
2836
2837 if ( h->root.type != bfd_link_hash_defined
2838 && h->root.type != bfd_link_hash_defweak)
2839 /* This appears to be a reference to an undefined
2840 symbol. Just ignore it--it will be caught by the
2841 regular reloc processing. */
2842 continue;
2843
2844 symval = (h->root.u.def.value
2845 + h->root.u.def.section->output_section->vma
2846 + h->root.u.def.section->output_offset);
2847#ifdef DEBUG_RELAX
2848 fprintf (stderr,
2849 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2850 sec->name, h->root.root.string, h->root.u.def.value,
2851 sec->output_section->vma, sec->output_offset, irel->r_addend);
2852#endif
2853 }
2854
2855 addend = irel->r_addend;
2856
2857 foff = (symval + addend
2858 - (irel->r_offset
2859 + sec->output_section->vma
2860 + sec->output_offset
2861 + 4));
2862#ifdef DEBUG_RELAX
2863 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2864 irel->r_offset,
2865 (irel->r_offset
2866 + sec->output_section->vma
2867 + sec->output_offset),
2868 symval, addend, foff);
2869#endif
2870 if (foff < -0x100000 || foff >= 0x100000)
2871 /* After all that work, we can't shorten this function call. */
2872 continue;
2873
2874 /* For simplicity of coding, we are going to modify the section
2875 contents, the section relocs, and the BFD symbol table. We
2876 must tell the rest of the code not to free up this
2877 information. It would be possible to instead create a table
2878 of changes which have to be made, as is done in coff-mips.c;
2879 that would be more work, but would require less memory when
2880 the linker is run. */
2881 elf_section_data (sec)->relocs = internal_relocs;
86aba9db 2882 elf_section_data (sec)->this_hdr.contents = contents;
5cec6941 2883 symtab_hdr->contents = (bfd_byte *) isymbuf;
86aba9db
NC		 2884
2885 if (foff < -0x100 || foff >= 0x100)
2886 {
2887 /* Replace the long jump with a jr. */
2888
2889 irel->r_info =
b34976b6
AM		 2890 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
2891
86aba9db
NC		 2892 irel->r_addend = addend;
2893 addend = 0;
2894
2895 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2896 /* If this needs to be changed because of future relaxing,
2897 it will be handled here like other internal IND12W
2898 relocs. */
2899 bfd_put_32 (abfd,
2900 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
2901 contents + irel->r_offset);
2902 else
2903 /* We can't fully resolve this yet, because the external
2904 symbol value may be changed by future relaxing.
2905 We let the final link phase handle it. */
2906 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
2907
2908 hi_irelfn->r_info =
2909 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2910 lo_irelfn->r_info =
2911 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2912 if (!v850_elf_relax_delete_bytes (abfd, sec,
2913 irel->r_offset + 4, toaddr, 6))
2914 goto error_return;
2915
2916 align_pad_size += 6;
2917 }
2918 else
2919 {
2920 /* Replace the long jump with a br. */
2921
2922 irel->r_info =
2923 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
2924
2925 irel->r_addend = addend;
2926 addend = 0;
2927
2928 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2929 /* If this needs to be changed because of future relaxing,
2930 it will be handled here like other internal IND12W
2931 relocs. */
2932 bfd_put_16 (abfd,
2933 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
2934 contents + irel->r_offset);
2935 else
2936 /* We can't fully resolve this yet, because the external
2937 symbol value may be changed by future relaxing.
2938 We let the final link phase handle it. */
2939 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
2940
2941 hi_irelfn->r_info =
2942 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2943 lo_irelfn->r_info =
2944 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2945 if (!v850_elf_relax_delete_bytes (abfd, sec,
2946 irel->r_offset + 2, toaddr, 8))
2947 goto error_return;
2948
2949 align_pad_size += 8;
2950 }
2951 }
2952 }
2953
2954 irelalign = NULL;
2955 for (irel = internal_relocs; irel < irelend; irel++)
2956 {
2957 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2958 && irel->r_offset == toaddr)
2959 {
2960 irel->r_offset -= align_pad_size;
2961
2962 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
2963 irelalign = irel;
2964 }
2965 }
2966
2967 addr = toaddr;
2968 }
2969
2970 if (!irelalign)
2971 {
2972#ifdef DEBUG_RELAX
2973 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
2974 align_pad_size,
eea6121a
AM		 2975 sec->size,
2976 sec->size - align_pad_size);
86aba9db 2977#endif
eea6121a 2978 sec->size -= align_pad_size;
86aba9db
NC		 2979 }
2980
5cec6941
NC		 2981 finish:
2982 if (internal_relocs != NULL
2983 && elf_section_data (sec)->relocs != internal_relocs)
2984 free (internal_relocs);
86aba9db 2985
5cec6941
NC		 2986 if (contents != NULL
2987 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
2988 free (contents);
86aba9db 2989
5cec6941
NC		 2990 if (isymbuf != NULL
2991 && symtab_hdr->contents != (bfd_byte *) isymbuf)
2992 free (isymbuf);
86aba9db 2993
5cec6941 2994 return result;
86aba9db 2995
5cec6941 2996 error_return:
b34976b6 2997 result = FALSE;
5cec6941 2998 goto finish;
86aba9db 2999}
2f89ff8d 3000
b35d266b 3001static const struct bfd_elf_special_section v850_elf_special_sections[] =
7f4d3958 3002{
0112cd26
NC		 3003 { STRING_COMMA_LEN (".call_table_data"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE) },
3004 { STRING_COMMA_LEN (".call_table_text"), 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3005 + SHF_EXECINSTR) },
3006 { STRING_COMMA_LEN (".rosdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3007 + SHF_V850_GPREL) },
3008 { STRING_COMMA_LEN (".rozdata"), -2, SHT_PROGBITS, (SHF_ALLOC
3009 + SHF_V850_R0REL) },
3010 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3011 + SHF_V850_GPREL) },
3012 { STRING_COMMA_LEN (".scommon"), -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3013 + SHF_V850_GPREL) },
3014 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3015 + SHF_V850_GPREL) },
3016 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3017 + SHF_V850_EPREL) },
3018 { STRING_COMMA_LEN (".tcommon"), -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3019 + SHF_V850_R0REL) },
3020 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3021 + SHF_V850_EPREL) },
3022 { STRING_COMMA_LEN (".zbss"), -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3023 + SHF_V850_R0REL) },
3024 { STRING_COMMA_LEN (".zcommon"), -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3025 + SHF_V850_R0REL) },
3026 { STRING_COMMA_LEN (".zdata"), -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3027 + SHF_V850_R0REL) },
3028 { NULL, 0, 0, 0, 0 }
7f4d3958 3029};
252b5132
RH		 3030\f
3031#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3032#define TARGET_LITTLE_NAME "elf32-v850"
3033#define ELF_ARCH bfd_arch_v850
aa4f99bb
AO		 3034#define ELF_MACHINE_CODE EM_V850
3035#define ELF_MACHINE_ALT1 EM_CYGNUS_V850
46767561 3036#define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */
252b5132 3037#define ELF_MAXPAGESIZE 0x1000
435b1e90 3038
252b5132
RH		 3039#define elf_info_to_howto v850_elf_info_to_howto_rela
3040#define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3041
3042#define elf_backend_check_relocs v850_elf_check_relocs
3043#define elf_backend_relocate_section v850_elf_relocate_section
3044#define elf_backend_object_p v850_elf_object_p
3045#define elf_backend_final_write_processing v850_elf_final_write_processing
3046#define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3047#define elf_backend_symbol_processing v850_elf_symbol_processing
3048#define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3049#define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3050#define elf_backend_section_from_shdr v850_elf_section_from_shdr
3051#define elf_backend_fake_sections v850_elf_fake_sections
3052#define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
29ef7005 3053#define elf_backend_special_sections v850_elf_special_sections
252b5132
RH		 3054
3055#define elf_backend_can_gc_sections 1
f0fe0e16 3056#define elf_backend_rela_normal 1
252b5132 3057
252b5132
RH		 3058#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3059#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
252b5132
RH		 3060#define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3061#define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3062#define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
86aba9db 3063#define bfd_elf32_bfd_relax_section v850_elf_relax_section
252b5132
RH		 3064
3065#define elf_symbol_leading_char '_'
3066
3067#include "elf32-target.h"
GDB Binutils - Deliverables
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