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[deliverable/binutils-gdb.git] / bfd / elf32-v850.c
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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
b34976b6 1714static bfd_boolean
47b0e7ad
NC		 1715v850_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
1716 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1717 asection *sec ATTRIBUTE_UNUSED,
1718 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
252b5132 1719{
e12dd2ea 1720 /* No got and plt entries for v850-elf. */
b34976b6 1721 return TRUE;
252b5132
RH		 1722}
1723
1724static asection *
47b0e7ad
NC		 1725v850_elf_gc_mark_hook (asection *sec,
1726 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1727 Elf_Internal_Rela *rel,
1728 struct elf_link_hash_entry *h,
1729 Elf_Internal_Sym *sym)
252b5132
RH		 1730{
1731 if (h != NULL)
1732 {
1733 switch (ELF32_R_TYPE (rel->r_info))
1734 {
1735 case R_V850_GNU_VTINHERIT:
1736 case R_V850_GNU_VTENTRY:
1737 break;
1738
1739 default:
1740 switch (h->root.type)
1741 {
1742 case bfd_link_hash_defined:
1743 case bfd_link_hash_defweak:
1744 return h->root.u.def.section;
1745
1746 case bfd_link_hash_common:
1747 return h->root.u.c.p->section;
e049a0de
ILT		 1748
1749 default:
1750 break;
252b5132
RH		 1751 }
1752 }
1753 }
1754 else
1e2f5b6e 1755 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
9ad5cbcf 1756
252b5132
RH		 1757 return NULL;
1758}
e12dd2ea 1759
252b5132 1760/* Set the right machine number. */
e12dd2ea 1761
b34976b6 1762static bfd_boolean
47b0e7ad 1763v850_elf_object_p (bfd *abfd)
252b5132
RH		 1764{
1765 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1766 {
1767 default:
250d94fd
AM		 1768 case E_V850_ARCH:
1769 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1770 break;
1771 case E_V850E_ARCH:
1772 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1773 break;
8ad30312
NC		 1774 case E_V850E1_ARCH:
1775 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1776 break;
252b5132 1777 }
b34976b6 1778 return TRUE;
252b5132
RH		 1779}
1780
1781/* Store the machine number in the flags field. */
e12dd2ea 1782
252b5132 1783static void
47b0e7ad
NC		 1784v850_elf_final_write_processing (bfd *abfd,
1785 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH		 1786{
1787 unsigned long val;
1788
1789 switch (bfd_get_mach (abfd))
1790 {
b34976b6 1791 default:
47b0e7ad
NC		 1792 case bfd_mach_v850: val = E_V850_ARCH; break;
1793 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1794 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
252b5132
RH		 1795 }
1796
1797 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1798 elf_elfheader (abfd)->e_flags |= val;
1799}
1800
435b1e90 1801/* Function to keep V850 specific file flags. */
e12dd2ea 1802
b34976b6 1803static bfd_boolean
47b0e7ad 1804v850_elf_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 1805{
1806 BFD_ASSERT (!elf_flags_init (abfd)
1807 || elf_elfheader (abfd)->e_flags == flags);
1808
1809 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM		 1810 elf_flags_init (abfd) = TRUE;
1811 return TRUE;
252b5132
RH		 1812}
1813
e12dd2ea
NC		 1814/* Merge backend specific data from an object file
1815 to the output object file when linking. */
47b0e7ad 1816
b34976b6 1817static bfd_boolean
47b0e7ad 1818v850_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 1819{
1820 flagword out_flags;
1821 flagword in_flags;
1822
1823 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1824 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 1825 return TRUE;
252b5132
RH		 1826
1827 in_flags = elf_elfheader (ibfd)->e_flags;
1828 out_flags = elf_elfheader (obfd)->e_flags;
1829
1830 if (! elf_flags_init (obfd))
1831 {
1832 /* If the input is the default architecture then do not
1833 bother setting the flags for the output architecture,
1834 instead allow future merges to do this. If no future
1835 merges ever set these flags then they will retain their
1836 unitialised values, which surprise surprise, correspond
1837 to the default values. */
1838 if (bfd_get_arch_info (ibfd)->the_default)
b34976b6 1839 return TRUE;
435b1e90 1840
b34976b6 1841 elf_flags_init (obfd) = TRUE;
252b5132
RH		 1842 elf_elfheader (obfd)->e_flags = in_flags;
1843
1844 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1845 && bfd_get_arch_info (obfd)->the_default)
e12dd2ea 1846 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
252b5132 1847
b34976b6 1848 return TRUE;
252b5132
RH		 1849 }
1850
1851 /* Check flag compatibility. */
1852 if (in_flags == out_flags)
b34976b6 1853 return TRUE;
252b5132
RH		 1854
1855 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1856 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
8ad30312
NC		 1857 {
1858 /* Allow v850e1 binaries to be linked with v850e binaries.
1859 Set the output binary to v850e. */
1860 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1861 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1862 return TRUE;
1863
1864 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1865 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1866 {
1867 elf_elfheader (obfd)->e_flags =
1868 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1869 return TRUE;
1870 }
1871
d003868e
AM		 1872 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
1873 ibfd);
8ad30312 1874 }
252b5132 1875
b34976b6 1876 return TRUE;
252b5132 1877}
e12dd2ea
NC		 1878
1879/* Display the flags field. */
252b5132 1880
b34976b6 1881static bfd_boolean
47b0e7ad 1882v850_elf_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132
RH		 1883{
1884 FILE * file = (FILE *) ptr;
435b1e90 1885
252b5132 1886 BFD_ASSERT (abfd != NULL && ptr != NULL);
435b1e90 1887
252b5132 1888 _bfd_elf_print_private_bfd_data (abfd, ptr);
435b1e90 1889
252b5132
RH		 1890 /* xgettext:c-format */
1891 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
435b1e90 1892
252b5132
RH		 1893 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1894 {
1895 default:
1896 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
47b0e7ad 1897 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
8ad30312 1898 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
252b5132 1899 }
435b1e90 1900
252b5132 1901 fputc ('\n', file);
435b1e90 1902
b34976b6 1903 return TRUE;
252b5132
RH		 1904}
1905
1906/* V850 ELF uses four common sections. One is the usual one, and the
1907 others are for (small) objects in one of the special data areas:
1908 small, tiny and zero. All the objects are kept together, and then
1909 referenced via the gp register, the ep register or the r0 register
1910 respectively, which yields smaller, faster assembler code. This
1911 approach is copied from elf32-mips.c. */
1912
1913static asection v850_elf_scom_section;
1914static asymbol v850_elf_scom_symbol;
1915static asymbol * v850_elf_scom_symbol_ptr;
1916static asection v850_elf_tcom_section;
1917static asymbol v850_elf_tcom_symbol;
1918static asymbol * v850_elf_tcom_symbol_ptr;
1919static asection v850_elf_zcom_section;
1920static asymbol v850_elf_zcom_symbol;
1921static asymbol * v850_elf_zcom_symbol_ptr;
1922
e12dd2ea
NC		 1923/* Given a BFD section, try to locate the
1924 corresponding ELF section index. */
252b5132 1925
b34976b6 1926static bfd_boolean
47b0e7ad
NC		 1927v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1928 asection *sec,
1929 int *retval)
252b5132
RH		 1930{
1931 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1932 *retval = SHN_V850_SCOMMON;
1933 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
1934 *retval = SHN_V850_TCOMMON;
1935 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
1936 *retval = SHN_V850_ZCOMMON;
1937 else
b34976b6 1938 return FALSE;
435b1e90 1939
b34976b6 1940 return TRUE;
252b5132
RH		 1941}
1942
1943/* Handle the special V850 section numbers that a symbol may use. */
1944
1945static void
47b0e7ad 1946v850_elf_symbol_processing (bfd *abfd, asymbol *asym)
252b5132
RH		 1947{
1948 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
9ad5cbcf 1949 unsigned int indx;
435b1e90 1950
9ad5cbcf 1951 indx = elfsym->internal_elf_sym.st_shndx;
252b5132
RH		 1952
1953 /* If the section index is an "ordinary" index, then it may
1954 refer to a v850 specific section created by the assembler.
1955 Check the section's type and change the index it matches.
435b1e90 1956
252b5132 1957 FIXME: Should we alter the st_shndx field as well ? */
435b1e90 1958
9ad5cbcf
AM		 1959 if (indx < elf_numsections (abfd))
1960 switch (elf_elfsections(abfd)[indx]->sh_type)
252b5132
RH		 1961 {
1962 case SHT_V850_SCOMMON:
9ad5cbcf 1963 indx = SHN_V850_SCOMMON;
252b5132 1964 break;
435b1e90 1965
252b5132 1966 case SHT_V850_TCOMMON:
9ad5cbcf 1967 indx = SHN_V850_TCOMMON;
252b5132 1968 break;
435b1e90 1969
252b5132 1970 case SHT_V850_ZCOMMON:
9ad5cbcf 1971 indx = SHN_V850_ZCOMMON;
252b5132 1972 break;
435b1e90 1973
252b5132
RH		 1974 default:
1975 break;
1976 }
435b1e90 1977
9ad5cbcf 1978 switch (indx)
252b5132
RH		 1979 {
1980 case SHN_V850_SCOMMON:
1981 if (v850_elf_scom_section.name == NULL)
1982 {
1983 /* Initialize the small common section. */
1984 v850_elf_scom_section.name = ".scommon";
1985 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
1986 v850_elf_scom_section.output_section = & v850_elf_scom_section;
1987 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
1988 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
1989 v850_elf_scom_symbol.name = ".scommon";
1990 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
1991 v850_elf_scom_symbol.section = & v850_elf_scom_section;
1992 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
1993 }
1994 asym->section = & v850_elf_scom_section;
1995 asym->value = elfsym->internal_elf_sym.st_size;
1996 break;
435b1e90 1997
252b5132
RH		 1998 case SHN_V850_TCOMMON:
1999 if (v850_elf_tcom_section.name == NULL)
2000 {
2001 /* Initialize the tcommon section. */
2002 v850_elf_tcom_section.name = ".tcommon";
2003 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2004 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2005 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2006 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2007 v850_elf_tcom_symbol.name = ".tcommon";
2008 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2009 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2010 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2011 }
2012 asym->section = & v850_elf_tcom_section;
2013 asym->value = elfsym->internal_elf_sym.st_size;
2014 break;
2015
2016 case SHN_V850_ZCOMMON:
2017 if (v850_elf_zcom_section.name == NULL)
2018 {
2019 /* Initialize the zcommon section. */
2020 v850_elf_zcom_section.name = ".zcommon";
2021 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2022 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2023 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2024 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2025 v850_elf_zcom_symbol.name = ".zcommon";
2026 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2027 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2028 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2029 }
2030 asym->section = & v850_elf_zcom_section;
2031 asym->value = elfsym->internal_elf_sym.st_size;
2032 break;
2033 }
2034}
2035
2036/* Hook called by the linker routine which adds symbols from an object
2037 file. We must handle the special v850 section numbers here. */
2038
b34976b6 2039static bfd_boolean
47b0e7ad
NC		 2040v850_elf_add_symbol_hook (bfd *abfd,
2041 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2042 Elf_Internal_Sym *sym,
2043 const char **namep ATTRIBUTE_UNUSED,
2044 flagword *flagsp ATTRIBUTE_UNUSED,
2045 asection **secp,
2046 bfd_vma *valp)
252b5132 2047{
9ad5cbcf 2048 unsigned int indx = sym->st_shndx;
435b1e90 2049
252b5132
RH		 2050 /* If the section index is an "ordinary" index, then it may
2051 refer to a v850 specific section created by the assembler.
2052 Check the section's type and change the index it matches.
435b1e90 2053
252b5132 2054 FIXME: Should we alter the st_shndx field as well ? */
435b1e90 2055
9ad5cbcf
AM		 2056 if (indx < elf_numsections (abfd))
2057 switch (elf_elfsections(abfd)[indx]->sh_type)
252b5132
RH		 2058 {
2059 case SHT_V850_SCOMMON:
9ad5cbcf 2060 indx = SHN_V850_SCOMMON;
252b5132 2061 break;
435b1e90 2062
252b5132 2063 case SHT_V850_TCOMMON:
9ad5cbcf 2064 indx = SHN_V850_TCOMMON;
252b5132 2065 break;
435b1e90 2066
252b5132 2067 case SHT_V850_ZCOMMON:
9ad5cbcf 2068 indx = SHN_V850_ZCOMMON;
252b5132 2069 break;
435b1e90 2070
252b5132
RH		 2071 default:
2072 break;
2073 }
435b1e90 2074
9ad5cbcf 2075 switch (indx)
252b5132
RH		 2076 {
2077 case SHN_V850_SCOMMON:
2078 *secp = bfd_make_section_old_way (abfd, ".scommon");
2079 (*secp)->flags |= SEC_IS_COMMON;
2080 *valp = sym->st_size;
2081 break;
435b1e90 2082
252b5132
RH		 2083 case SHN_V850_TCOMMON:
2084 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2085 (*secp)->flags |= SEC_IS_COMMON;
2086 *valp = sym->st_size;
2087 break;
435b1e90 2088
252b5132
RH		 2089 case SHN_V850_ZCOMMON:
2090 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2091 (*secp)->flags |= SEC_IS_COMMON;
2092 *valp = sym->st_size;
2093 break;
2094 }
2095
b34976b6 2096 return TRUE;
252b5132
RH		 2097}
2098
b34976b6 2099static bfd_boolean
47b0e7ad
NC		 2100v850_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2101 const char *name ATTRIBUTE_UNUSED,
2102 Elf_Internal_Sym *sym,
2103 asection *input_sec,
2104 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
252b5132
RH		 2105{
2106 /* If we see a common symbol, which implies a relocatable link, then
2107 if a symbol was in a special common section in an input file, mark
2108 it as a special common in the output file. */
435b1e90 2109
252b5132
RH		 2110 if (sym->st_shndx == SHN_COMMON)
2111 {
2112 if (strcmp (input_sec->name, ".scommon") == 0)
2113 sym->st_shndx = SHN_V850_SCOMMON;
2114 else if (strcmp (input_sec->name, ".tcommon") == 0)
2115 sym->st_shndx = SHN_V850_TCOMMON;
2116 else if (strcmp (input_sec->name, ".zcommon") == 0)
2117 sym->st_shndx = SHN_V850_ZCOMMON;
2118 }
2119
b34976b6 2120 return TRUE;
252b5132
RH		 2121}
2122
b34976b6 2123static bfd_boolean
6dc132d9
L		 2124v850_elf_section_from_shdr (bfd *abfd,
2125 Elf_Internal_Shdr *hdr,
2126 const char *name,
2127 int shindex)
252b5132
RH		 2128{
2129 /* There ought to be a place to keep ELF backend specific flags, but
2130 at the moment there isn't one. We just keep track of the
2131 sections by their name, instead. */
2132
6dc132d9 2133 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
b34976b6 2134 return FALSE;
252b5132
RH		 2135
2136 switch (hdr->sh_type)
2137 {
2138 case SHT_V850_SCOMMON:
2139 case SHT_V850_TCOMMON:
2140 case SHT_V850_ZCOMMON:
2141 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2142 (bfd_get_section_flags (abfd,
2143 hdr->bfd_section)
2144 | SEC_IS_COMMON)))
b34976b6 2145 return FALSE;
252b5132
RH		 2146 }
2147
b34976b6 2148 return TRUE;
252b5132
RH		 2149}
2150
e12dd2ea
NC		 2151/* Set the correct type for a V850 ELF section. We do this
2152 by the section name, which is a hack, but ought to work. */
2153
b34976b6 2154static bfd_boolean
47b0e7ad
NC		 2155v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2156 Elf_Internal_Shdr *hdr,
2157 asection *sec)
252b5132 2158{
47b0e7ad 2159 const char * name;
252b5132
RH		 2160
2161 name = bfd_get_section_name (abfd, sec);
2162
2163 if (strcmp (name, ".scommon") == 0)
47b0e7ad 2164 hdr->sh_type = SHT_V850_SCOMMON;
252b5132 2165 else if (strcmp (name, ".tcommon") == 0)
47b0e7ad 2166 hdr->sh_type = SHT_V850_TCOMMON;
252b5132
RH		 2167 else if (strcmp (name, ".zcommon") == 0)
2168 hdr->sh_type = SHT_V850_ZCOMMON;
435b1e90 2169
b34976b6 2170 return TRUE;
252b5132 2171}
86aba9db
NC		 2172
2173/* Delete some bytes from a section while relaxing. */
2174
b34976b6 2175static bfd_boolean
47b0e7ad
NC		 2176v850_elf_relax_delete_bytes (bfd *abfd,
2177 asection *sec,
2178 bfd_vma addr,
2179 bfd_vma toaddr,
2180 int count)
86aba9db 2181{
b34976b6
AM		 2182 Elf_Internal_Shdr *symtab_hdr;
2183 Elf32_External_Sym *extsyms;
2184 Elf32_External_Sym *esym;
2185 Elf32_External_Sym *esymend;
2186 int index;
2187 unsigned int sec_shndx;
2188 bfd_byte *contents;
2189 Elf_Internal_Rela *irel;
2190 Elf_Internal_Rela *irelend;
2191 struct elf_link_hash_entry *sym_hash;
2192 Elf_Internal_Shdr *shndx_hdr;
2193 Elf_External_Sym_Shndx *shndx;
86aba9db
NC		 2194
2195 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2196 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2197
2198 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2199
2200 contents = elf_section_data (sec)->this_hdr.contents;
2201
2202 /* The deletion must stop at the next ALIGN reloc for an alignment
2203 power larger than the number of bytes we are deleting. */
2204
2205 /* Actually delete the bytes. */
2206#if (DEBUG_RELAX & 2)
2207 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2208 sec->name, addr, toaddr, count );
2209#endif
2210 memmove (contents + addr, contents + addr + count,
2211 toaddr - addr - count);
2212 memset (contents + toaddr-count, 0, count);
2213
2214 /* Adjust all the relocs. */
2215 irel = elf_section_data (sec)->relocs;
2216 irelend = irel + sec->reloc_count;
2217 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2218 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2219
2220 for (; irel < irelend; irel++)
2221 {
2222 bfd_vma raddr, paddr, symval;
2223 Elf_Internal_Sym isym;
2224
2225 /* Get the new reloc address. */
2226 raddr = irel->r_offset;
2227 if ((raddr >= (addr + count) && raddr < toaddr))
b34976b6 2228 irel->r_offset -= count;
86aba9db
NC		 2229
2230 if (raddr >= addr && raddr < addr + count)
2231 {
2232 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2233 (int) R_V850_NONE);
2234 continue;
2235 }
b34976b6 2236
86aba9db
NC		 2237 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2238 continue;
2239
2240 bfd_elf32_swap_symbol_in (abfd,
2241 extsyms + ELF32_R_SYM (irel->r_info),
2242 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2243 & isym);
b34976b6 2244
86aba9db
NC		 2245 if (isym.st_shndx != sec_shndx)
2246 continue;
2247
2248 /* Get the value of the symbol referred to by the reloc. */
2249 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2250 {
2251 symval = isym.st_value;
2252#if (DEBUG_RELAX & 2)
2253 {
2254 char * name = bfd_elf_string_from_elf_section
2255 (abfd, symtab_hdr->sh_link, isym.st_name);
2256 fprintf (stderr,
2257 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2258 sec->name, name, isym.st_name,
2259 sec->output_section->vma, sec->output_offset,
2260 isym.st_value, irel->r_addend);
2261 }
2262#endif
2263 }
2264 else
2265 {
2266 unsigned long indx;
2267 struct elf_link_hash_entry * h;
2268
2269 /* An external symbol. */
2270 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2271
2272 h = elf_sym_hashes (abfd) [indx];
2273 BFD_ASSERT (h != NULL);
2274
2275 symval = h->root.u.def.value;
2276#if (DEBUG_RELAX & 2)
2277 fprintf (stderr,
2278 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2279 sec->name, h->root.root.string, h->root.u.def.value,
2280 sec->output_section->vma, sec->output_offset, irel->r_addend);
2281#endif
2282 }
b34976b6 2283
86aba9db 2284 paddr = symval + irel->r_addend;
b34976b6 2285
86aba9db
NC		 2286 if ( (symval >= addr + count && symval < toaddr)
2287 && (paddr < addr + count || paddr >= toaddr))
2288 irel->r_addend += count;
2289 else if ( (symval < addr + count || symval >= toaddr)
2290 && (paddr >= addr + count && paddr < toaddr))
2291 irel->r_addend -= count;
2292 }
2293
2294 /* Adjust the local symbols defined in this section. */
2295 esym = extsyms;
2296 esymend = esym + symtab_hdr->sh_info;
2297
2298 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2299 {
2300 Elf_Internal_Sym isym;
2301
2302 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2303
2304 if (isym.st_shndx == sec_shndx
2305 && isym.st_value >= addr + count
2306 && isym.st_value < toaddr)
2307 {
2308 isym.st_value -= count;
2309
2310 if (isym.st_value + isym.st_size >= toaddr)
b34976b6
AM		 2311 isym.st_size += count;
2312
63a23799 2313 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2314 }
2315 else if (isym.st_shndx == sec_shndx
2316 && isym.st_value < addr + count)
2317 {
2318 if (isym.st_value+isym.st_size >= addr + count
2319 && isym.st_value+isym.st_size < toaddr)
2320 isym.st_size -= count;
2321
2322 if (isym.st_value >= addr
2323 && isym.st_value < addr + count)
2324 isym.st_value = addr;
2325
63a23799 2326 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2327 }
2328 }
2329
2330 /* Now adjust the global symbols defined in this section. */
2331 esym = extsyms + symtab_hdr->sh_info;
2332 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2333
2334 for (index = 0; esym < esymend; esym ++, index ++)
2335 {
2336 Elf_Internal_Sym isym;
2337
2338 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2339 sym_hash = elf_sym_hashes (abfd) [index];
2340
2341 if (isym.st_shndx == sec_shndx
2342 && ((sym_hash)->root.type == bfd_link_hash_defined
2343 || (sym_hash)->root.type == bfd_link_hash_defweak)
2344 && (sym_hash)->root.u.def.section == sec
2345 && (sym_hash)->root.u.def.value >= addr + count
2346 && (sym_hash)->root.u.def.value < toaddr)
2347 {
2348 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2349 {
2350 isym.st_size += count;
63a23799 2351 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2352 }
2353
2354 (sym_hash)->root.u.def.value -= count;
2355 }
2356 else if (isym.st_shndx == sec_shndx
2357 && ((sym_hash)->root.type == bfd_link_hash_defined
2358 || (sym_hash)->root.type == bfd_link_hash_defweak)
2359 && (sym_hash)->root.u.def.section == sec
2360 && (sym_hash)->root.u.def.value < addr + count)
2361 {
2362 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2363 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2364 isym.st_size -= count;
2365
2366 if ((sym_hash)->root.u.def.value >= addr
2367 && (sym_hash)->root.u.def.value < addr + count)
2368 (sym_hash)->root.u.def.value = addr;
2369
63a23799 2370 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
86aba9db
NC		 2371 }
2372
2373 if (shndx)
2374 ++ shndx;
2375 }
2376
b34976b6 2377 return TRUE;
86aba9db
NC		 2378}
2379
2380#define NOP_OPCODE (0x0000)
b34976b6 2381#define MOVHI 0x0640 /* 4byte */
86aba9db 2382#define MOVHI_MASK 0x07e0
b34976b6 2383#define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
86aba9db
NC		 2384#define MOVHI_R2(insn) ((insn) >> 11)
2385#define MOVEA 0x0620 /* 2byte */
2386#define MOVEA_MASK 0x07e0
2387#define MOVEA_R1(insn) ((insn) & 0x1f)
2388#define MOVEA_R2(insn) ((insn) >> 11)
2389#define JARL_4 0x00040780 /* 4byte */
2390#define JARL_4_MASK 0xFFFF07FF
2391#define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2392#define ADD_I 0x0240 /* 2byte */
2393#define ADD_I_MASK 0x07e0
2394#define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2395#define ADD_R2(insn) ((insn) >> 11)
2396#define JMP_R 0x0060 /* 2byte */
2397#define JMP_R_MASK 0xFFE0
2398#define JMP_R1(insn) ((insn) & 0x1f)
2399
b34976b6 2400static bfd_boolean
47b0e7ad
NC		 2401v850_elf_relax_section (bfd *abfd,
2402 asection *sec,
2403 struct bfd_link_info *link_info,
2404 bfd_boolean *again)
86aba9db 2405{
b34976b6
AM		 2406 Elf_Internal_Shdr *symtab_hdr;
2407 Elf_Internal_Rela *internal_relocs;
2408 Elf_Internal_Rela *irel;
2409 Elf_Internal_Rela *irelend;
2410 Elf_Internal_Rela *irelalign = NULL;
2411 Elf_Internal_Sym *isymbuf = NULL;
2412 bfd_byte *contents = NULL;
2413 bfd_vma addr = 0;
2414 bfd_vma toaddr;
2415 int align_pad_size = 0;
2416 bfd_boolean result = TRUE;
2417
2418 *again = FALSE;
86aba9db 2419
1049f94e 2420 if (link_info->relocatable
86aba9db
NC		 2421 || (sec->flags & SEC_RELOC) == 0
2422 || sec->reloc_count == 0)
b34976b6 2423 return TRUE;
86aba9db 2424
86aba9db
NC		 2425 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2426
45d6a902 2427 internal_relocs = (_bfd_elf_link_read_relocs
47b0e7ad 2428 (abfd, sec, NULL, NULL, link_info->keep_memory));
86aba9db
NC		 2429 if (internal_relocs == NULL)
2430 goto error_return;
86aba9db
NC		 2431
2432 irelend = internal_relocs + sec->reloc_count;
b34976b6 2433
eea6121a 2434 while (addr < sec->size)
86aba9db 2435 {
eea6121a 2436 toaddr = sec->size;
86aba9db
NC		 2437
2438 for (irel = internal_relocs; irel < irelend; irel ++)
2439 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2440 && irel->r_offset > addr
2441 && irel->r_offset < toaddr)
2442 toaddr = irel->r_offset;
b34976b6 2443
86aba9db
NC		 2444#ifdef DEBUG_RELAX
2445 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2446 addr, toaddr, align_pad_size);
2447#endif
2448 if (irelalign)
2449 {
2450 bfd_vma alignto;
2451 bfd_vma alignmoveto;
2452
2453 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2454 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2455
2456 if (alignmoveto < alignto)
2457 {
2458 unsigned int i;
2459
2460 align_pad_size = alignto - alignmoveto;
2461#ifdef DEBUG_RELAX
2462 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2463 alignmoveto, toaddr, align_pad_size);
2464#endif
2465 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2466 toaddr, align_pad_size))
b34976b6 2467 goto error_return;
86aba9db
NC		 2468
2469 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2470 (i + 1) < toaddr; i += 2)
2471 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2472
2473 addr = alignmoveto;
2474 }
2475 else
2476 align_pad_size = 0;
2477 }
2478
2479 for (irel = internal_relocs; irel < irelend; irel++)
2480 {
b34976b6
AM		 2481 bfd_vma laddr;
2482 bfd_vma addend;
2483 bfd_vma symval;
2484 int insn[5];
2485 int no_match = -1;
2486 Elf_Internal_Rela *hi_irelfn;
2487 Elf_Internal_Rela *lo_irelfn;
2488 Elf_Internal_Rela *irelcall;
2489 bfd_signed_vma foff;
86aba9db
NC		 2490
2491 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2492 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2493 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2494 continue;
2495
2496#ifdef DEBUG_RELAX
2497 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2498 irel->r_info,
2499 irel->r_offset,
2500 irel->r_addend );
2501#endif
2502
2503 /* Get the section contents. */
2504 if (contents == NULL)
2505 {
2506 if (elf_section_data (sec)->this_hdr.contents != NULL)
2507 contents = elf_section_data (sec)->this_hdr.contents;
2508 else
2509 {
47b0e7ad 2510 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
86aba9db
NC		 2511 goto error_return;
2512 }
2513 }
2514
5cec6941
NC		 2515 /* Read this BFD's local symbols if we haven't done so already. */
2516 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
86aba9db 2517 {
5cec6941
NC		 2518 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2519 if (isymbuf == NULL)
2520 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2521 symtab_hdr->sh_info, 0,
2522 NULL, NULL, NULL);
2523 if (isymbuf == NULL)
2524 goto error_return;
86aba9db
NC		 2525 }
2526
2527 laddr = irel->r_offset;
2528
2529 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2530 {
2531 /* Check code for -mlong-calls output. */
eea6121a 2532 if (laddr + 16 <= (bfd_vma) sec->size)
86aba9db
NC		 2533 {
2534 insn[0] = bfd_get_16 (abfd, contents + laddr);
2535 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2536 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2537 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2538 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
b34976b6 2539
86aba9db
NC		 2540 if ((insn[0] & MOVHI_MASK) != MOVHI
2541 || MOVHI_R1 (insn[0]) != 0)
2542 no_match = 0;
2543
2544 if (no_match < 0
2545 && ((insn[1] & MOVEA_MASK) != MOVEA
2546 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2547 no_match = 1;
2548
2549 if (no_match < 0
2550 && (insn[2] & JARL_4_MASK) != JARL_4)
2551 no_match = 2;
2552
2553 if (no_match < 0
2554 && ((insn[3] & ADD_I_MASK) != ADD_I
2555 || ADD_I5 (insn[3]) != 4
2556 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2557 no_match = 3;
2558
2559 if (no_match < 0
2560 && ((insn[4] & JMP_R_MASK) != JMP_R
2561 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2562 no_match = 4;
2563 }
2564 else
2565 {
2566 ((*_bfd_error_handler)
2567 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2568 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2569
2570 continue;
2571 }
2572
2573 if (no_match >= 0)
2574 {
2575 ((*_bfd_error_handler)
2576 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2577 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2578
2579 continue;
b34976b6 2580 }
86aba9db
NC		 2581
2582 /* Get the reloc for the address from which the register is
2583 being loaded. This reloc will tell us which function is
2584 actually being called. */
2585 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2586 if (hi_irelfn->r_offset == laddr + 2
b34976b6 2587 && ELF32_R_TYPE (hi_irelfn->r_info)
86aba9db
NC		 2588 == (int) R_V850_HI16_S)
2589 break;
2590
2591 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2592 if (lo_irelfn->r_offset == laddr + 6
2593 && ELF32_R_TYPE (lo_irelfn->r_info)
2594 == (int) R_V850_LO16)
2595 break;
2596
2597 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2598 if (irelcall->r_offset == laddr + 8
2599 && ELF32_R_TYPE (irelcall->r_info)
2600 == (int) R_V850_22_PCREL)
2601 break;
2602
2603 if ( hi_irelfn == irelend
2604 || lo_irelfn == irelend
2605 || irelcall == irelend)
2606 {
2607 ((*_bfd_error_handler)
2608 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2609 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2610
2611 continue;
2612 }
b34976b6 2613
86aba9db
NC		 2614 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2615 {
5cec6941 2616 Elf_Internal_Sym * isym;
86aba9db
NC		 2617
2618 /* A local symbol. */
5cec6941 2619 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
86aba9db 2620
5cec6941 2621 symval = isym->st_value;
86aba9db
NC		 2622 }
2623 else
2624 {
2625 unsigned long indx;
2626 struct elf_link_hash_entry * h;
2627
2628 /* An external symbol. */
2629 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2630 h = elf_sym_hashes (abfd)[indx];
2631 BFD_ASSERT (h != NULL);
2632
2633 if ( h->root.type != bfd_link_hash_defined
2634 && h->root.type != bfd_link_hash_defweak)
2635 /* This appears to be a reference to an undefined
2636 symbol. Just ignore it--it will be caught by the
2637 regular reloc processing. */
2638 continue;
2639
2640 symval = h->root.u.def.value;
2641 }
2642
2643 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2644 {
2645 ((*_bfd_error_handler)
2646 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2647 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2648
2649 continue;
2650 }
2651
2652 /* Get the value of the symbol referred to by the reloc. */
2653 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2654 {
b34976b6
AM		 2655 Elf_Internal_Sym *isym;
2656 asection *sym_sec;
86aba9db
NC		 2657
2658 /* A local symbol. */
5cec6941 2659 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
b34976b6 2660
5cec6941 2661 if (isym->st_shndx == SHN_UNDEF)
86aba9db 2662 sym_sec = bfd_und_section_ptr;
5cec6941 2663 else if (isym->st_shndx == SHN_ABS)
86aba9db 2664 sym_sec = bfd_abs_section_ptr;
5cec6941 2665 else if (isym->st_shndx == SHN_COMMON)
86aba9db
NC		 2666 sym_sec = bfd_com_section_ptr;
2667 else
5cec6941
NC		 2668 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2669 symval = (isym->st_value
86aba9db
NC		 2670 + sym_sec->output_section->vma
2671 + sym_sec->output_offset);
2672 }
2673 else
2674 {
2675 unsigned long indx;
b34976b6 2676 struct elf_link_hash_entry *h;
86aba9db
NC		 2677
2678 /* An external symbol. */
5cec6941 2679 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
86aba9db
NC		 2680 h = elf_sym_hashes (abfd)[indx];
2681 BFD_ASSERT (h != NULL);
2682
2683 if ( h->root.type != bfd_link_hash_defined
2684 && h->root.type != bfd_link_hash_defweak)
2685 /* This appears to be a reference to an undefined
2686 symbol. Just ignore it--it will be caught by the
2687 regular reloc processing. */
2688 continue;
2689
2690 symval = (h->root.u.def.value
2691 + h->root.u.def.section->output_section->vma
2692 + h->root.u.def.section->output_offset);
2693 }
2694
2695 addend = irel->r_addend;
2696
2697 foff = (symval + addend
2698 - (irel->r_offset
2699 + sec->output_section->vma
2700 + sec->output_offset
2701 + 4));
2702#ifdef DEBUG_RELAX
2703 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2704 irel->r_offset,
2705 (irel->r_offset
2706 + sec->output_section->vma
2707 + sec->output_offset),
2708 symval, addend, foff);
2709#endif
2710
2711 if (foff < -0x100000 || foff >= 0x100000)
2712 /* After all that work, we can't shorten this function call. */
2713 continue;
2714
2715 /* For simplicity of coding, we are going to modify the section
2716 contents, the section relocs, and the BFD symbol table. We
2717 must tell the rest of the code not to free up this
2718 information. It would be possible to instead create a table
2719 of changes which have to be made, as is done in coff-mips.c;
2720 that would be more work, but would require less memory when
2721 the linker is run. */
2722 elf_section_data (sec)->relocs = internal_relocs;
86aba9db 2723 elf_section_data (sec)->this_hdr.contents = contents;
5cec6941 2724 symtab_hdr->contents = (bfd_byte *) isymbuf;
b34976b6 2725
86aba9db
NC		 2726 /* Replace the long call with a jarl. */
2727 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2728
2729 addend = 0;
2730
2731 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2732 /* If this needs to be changed because of future relaxing,
2733 it will be handled here like other internal IND12W
2734 relocs. */
2735 bfd_put_32 (abfd,
2736 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2737 contents + irel->r_offset);
2738 else
2739 /* We can't fully resolve this yet, because the external
2740 symbol value may be changed by future relaxing.
2741 We let the final link phase handle it. */
2742 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2743 contents + irel->r_offset);
2744
b34976b6 2745 hi_irelfn->r_info =
86aba9db
NC		 2746 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2747 lo_irelfn->r_info =
2748 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2749 irelcall->r_info =
2750 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2751
2752 if (! v850_elf_relax_delete_bytes (abfd, sec,
2753 irel->r_offset + 4, toaddr, 12))
2754 goto error_return;
2755
2756 align_pad_size += 12;
2757 }
2758 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2759 {
2760 /* Check code for -mlong-jumps output. */
eea6121a 2761 if (laddr + 10 <= (bfd_vma) sec->size)
86aba9db
NC		 2762 {
2763 insn[0] = bfd_get_16 (abfd, contents + laddr);
2764 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2765 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2766
2767 if ((insn[0] & MOVHI_MASK) != MOVHI
2768 || MOVHI_R1 (insn[0]) != 0)
2769 no_match = 0;
2770
2771 if (no_match < 0
2772 && ((insn[1] & MOVEA_MASK) != MOVEA
2773 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2774 no_match = 1;
2775
2776 if (no_match < 0
2777 && ((insn[2] & JMP_R_MASK) != JMP_R
2778 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2779 no_match = 4;
2780 }
2781 else
2782 {
2783 ((*_bfd_error_handler)
2784 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2785 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2786
2787 continue;
2788 }
2789
2790 if (no_match >= 0)
2791 {
2792 ((*_bfd_error_handler)
2793 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2794 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2795
2796 continue;
2797 }
2798
2799 /* Get the reloc for the address from which the register is
2800 being loaded. This reloc will tell us which function is
2801 actually being called. */
2802 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2803 if (hi_irelfn->r_offset == laddr + 2
b34976b6 2804 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
86aba9db
NC		 2805 break;
2806
2807 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2808 if (lo_irelfn->r_offset == laddr + 6
2809 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2810 break;
2811
2812 if ( hi_irelfn == irelend
2813 || lo_irelfn == irelend)
2814 {
2815 ((*_bfd_error_handler)
2816 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2817 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2818
2819 continue;
2820 }
b34976b6 2821
86aba9db
NC		 2822 /* Get the value of the symbol referred to by the reloc. */
2823 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2824 {
5cec6941
NC		 2825 Elf_Internal_Sym * isym;
2826 asection * sym_sec;
86aba9db
NC		 2827
2828 /* A local symbol. */
5cec6941
NC		 2829 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2830
2831 if (isym->st_shndx == SHN_UNDEF)
86aba9db 2832 sym_sec = bfd_und_section_ptr;
5cec6941 2833 else if (isym->st_shndx == SHN_ABS)
86aba9db 2834 sym_sec = bfd_abs_section_ptr;
5cec6941 2835 else if (isym->st_shndx == SHN_COMMON)
86aba9db
NC		 2836 sym_sec = bfd_com_section_ptr;
2837 else
5cec6941
NC		 2838 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2839 symval = (isym->st_value
86aba9db
NC		 2840 + sym_sec->output_section->vma
2841 + sym_sec->output_offset);
2842#ifdef DEBUG_RELAX
2843 {
2844 char * name = bfd_elf_string_from_elf_section
5cec6941 2845 (abfd, symtab_hdr->sh_link, isym->st_name);
86aba9db
NC		 2846
2847 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
5cec6941
NC		 2848 sym_sec->name, name, isym->st_name,
2849 sym_sec->output_section->vma,
2850 sym_sec->output_offset,
2851 isym->st_value, irel->r_addend);
86aba9db
NC		 2852 }
2853#endif
2854 }
2855 else
2856 {
2857 unsigned long indx;
2858 struct elf_link_hash_entry * h;
2859
2860 /* An external symbol. */
2861 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2862 h = elf_sym_hashes (abfd)[indx];
2863 BFD_ASSERT (h != NULL);
2864
2865 if ( h->root.type != bfd_link_hash_defined
2866 && h->root.type != bfd_link_hash_defweak)
2867 /* This appears to be a reference to an undefined
2868 symbol. Just ignore it--it will be caught by the
2869 regular reloc processing. */
2870 continue;
2871
2872 symval = (h->root.u.def.value
2873 + h->root.u.def.section->output_section->vma
2874 + h->root.u.def.section->output_offset);
2875#ifdef DEBUG_RELAX
2876 fprintf (stderr,
2877 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2878 sec->name, h->root.root.string, h->root.u.def.value,
2879 sec->output_section->vma, sec->output_offset, irel->r_addend);
2880#endif
2881 }
2882
2883 addend = irel->r_addend;
2884
2885 foff = (symval + addend
2886 - (irel->r_offset
2887 + sec->output_section->vma
2888 + sec->output_offset
2889 + 4));
2890#ifdef DEBUG_RELAX
2891 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2892 irel->r_offset,
2893 (irel->r_offset
2894 + sec->output_section->vma
2895 + sec->output_offset),
2896 symval, addend, foff);
2897#endif
2898 if (foff < -0x100000 || foff >= 0x100000)
2899 /* After all that work, we can't shorten this function call. */
2900 continue;
2901
2902 /* For simplicity of coding, we are going to modify the section
2903 contents, the section relocs, and the BFD symbol table. We
2904 must tell the rest of the code not to free up this
2905 information. It would be possible to instead create a table
2906 of changes which have to be made, as is done in coff-mips.c;
2907 that would be more work, but would require less memory when
2908 the linker is run. */
2909 elf_section_data (sec)->relocs = internal_relocs;
86aba9db 2910 elf_section_data (sec)->this_hdr.contents = contents;
5cec6941 2911 symtab_hdr->contents = (bfd_byte *) isymbuf;
86aba9db
NC		 2912
2913 if (foff < -0x100 || foff >= 0x100)
2914 {
2915 /* Replace the long jump with a jr. */
2916
2917 irel->r_info =
b34976b6
AM		 2918 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
2919
86aba9db
NC		 2920 irel->r_addend = addend;
2921 addend = 0;
2922
2923 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2924 /* If this needs to be changed because of future relaxing,
2925 it will be handled here like other internal IND12W
2926 relocs. */
2927 bfd_put_32 (abfd,
2928 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
2929 contents + irel->r_offset);
2930 else
2931 /* We can't fully resolve this yet, because the external
2932 symbol value may be changed by future relaxing.
2933 We let the final link phase handle it. */
2934 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
2935
2936 hi_irelfn->r_info =
2937 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2938 lo_irelfn->r_info =
2939 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2940 if (!v850_elf_relax_delete_bytes (abfd, sec,
2941 irel->r_offset + 4, toaddr, 6))
2942 goto error_return;
2943
2944 align_pad_size += 6;
2945 }
2946 else
2947 {
2948 /* Replace the long jump with a br. */
2949
2950 irel->r_info =
2951 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
2952
2953 irel->r_addend = addend;
2954 addend = 0;
2955
2956 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2957 /* If this needs to be changed because of future relaxing,
2958 it will be handled here like other internal IND12W
2959 relocs. */
2960 bfd_put_16 (abfd,
2961 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
2962 contents + irel->r_offset);
2963 else
2964 /* We can't fully resolve this yet, because the external
2965 symbol value may be changed by future relaxing.
2966 We let the final link phase handle it. */
2967 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
2968
2969 hi_irelfn->r_info =
2970 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2971 lo_irelfn->r_info =
2972 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2973 if (!v850_elf_relax_delete_bytes (abfd, sec,
2974 irel->r_offset + 2, toaddr, 8))
2975 goto error_return;
2976
2977 align_pad_size += 8;
2978 }
2979 }
2980 }
2981
2982 irelalign = NULL;
2983 for (irel = internal_relocs; irel < irelend; irel++)
2984 {
2985 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2986 && irel->r_offset == toaddr)
2987 {
2988 irel->r_offset -= align_pad_size;
2989
2990 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
2991 irelalign = irel;
2992 }
2993 }
2994
2995 addr = toaddr;
2996 }
2997
2998 if (!irelalign)
2999 {
3000#ifdef DEBUG_RELAX
3001 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3002 align_pad_size,
eea6121a
AM		 3003 sec->size,
3004 sec->size - align_pad_size);
86aba9db 3005#endif
eea6121a 3006 sec->size -= align_pad_size;
86aba9db
NC		 3007 }
3008
5cec6941
NC		 3009 finish:
3010 if (internal_relocs != NULL
3011 && elf_section_data (sec)->relocs != internal_relocs)
3012 free (internal_relocs);
86aba9db 3013
5cec6941
NC		 3014 if (contents != NULL
3015 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3016 free (contents);
86aba9db 3017
5cec6941
NC		 3018 if (isymbuf != NULL
3019 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3020 free (isymbuf);
86aba9db 3021
5cec6941 3022 return result;
86aba9db 3023
5cec6941 3024 error_return:
b34976b6 3025 result = FALSE;
5cec6941 3026 goto finish;
86aba9db 3027}
2f89ff8d 3028
b35d266b 3029static const struct bfd_elf_special_section v850_elf_special_sections[] =
7f4d3958
L		 3030{
3031 { ".call_table_data", 16, 0, SHT_PROGBITS, (SHF_ALLOC
3032 + SHF_WRITE) },
3033 { ".call_table_text", 16, 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3034 + SHF_EXECINSTR) },
7dcb9820
AM		 3035 { ".rosdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3036 + SHF_V850_GPREL) },
7f4d3958
L		 3037 { ".rozdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3038 + SHF_V850_R0REL) },
7dcb9820
AM		 3039 { ".sbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3040 + SHF_V850_GPREL) },
3041 { ".scommon", 8, -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3042 + SHF_V850_GPREL) },
551b43fd
AM		 3043 { ".sdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3044 + SHF_V850_GPREL) },
7dcb9820
AM		 3045 { ".tbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3046 + SHF_V850_EPREL) },
3047 { ".tcommon", 8, -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3048 + SHF_V850_R0REL) },
551b43fd
AM		 3049 { ".tdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3050 + SHF_V850_EPREL) },
7dcb9820
AM		 3051 { ".zbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3052 + SHF_V850_R0REL) },
3053 { ".zcommon", 8, -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3054 + SHF_V850_R0REL) },
551b43fd
AM		 3055 { ".zdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3056 + SHF_V850_R0REL) },
7f4d3958
L		 3057 { NULL, 0, 0, 0, 0 }
3058};
252b5132
RH		 3059\f
3060#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3061#define TARGET_LITTLE_NAME "elf32-v850"
3062#define ELF_ARCH bfd_arch_v850
aa4f99bb
AO		 3063#define ELF_MACHINE_CODE EM_V850
3064#define ELF_MACHINE_ALT1 EM_CYGNUS_V850
46767561 3065#define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */
252b5132 3066#define ELF_MAXPAGESIZE 0x1000
435b1e90 3067
252b5132
RH		 3068#define elf_info_to_howto v850_elf_info_to_howto_rela
3069#define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3070
3071#define elf_backend_check_relocs v850_elf_check_relocs
3072#define elf_backend_relocate_section v850_elf_relocate_section
3073#define elf_backend_object_p v850_elf_object_p
3074#define elf_backend_final_write_processing v850_elf_final_write_processing
3075#define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3076#define elf_backend_symbol_processing v850_elf_symbol_processing
3077#define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3078#define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3079#define elf_backend_section_from_shdr v850_elf_section_from_shdr
3080#define elf_backend_fake_sections v850_elf_fake_sections
3081#define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3082#define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
29ef7005 3083#define elf_backend_special_sections v850_elf_special_sections
252b5132
RH		 3084
3085#define elf_backend_can_gc_sections 1
f0fe0e16 3086#define elf_backend_rela_normal 1
252b5132 3087
252b5132
RH		 3088#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3089#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
252b5132
RH		 3090#define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3091#define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3092#define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
86aba9db 3093#define bfd_elf32_bfd_relax_section v850_elf_relax_section
252b5132
RH		 3094
3095#define elf_symbol_leading_char '_'
3096
3097#include "elf32-target.h"
GDB Binutils - Deliverables
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