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Change read_alphacoff_dynamic_symtab to use gdb::byte_vector
[deliverable/binutils-gdb.git] / bfd / elf32-i860.c
1 /* Intel i860 specific support for 32-bit ELF.
2 Copyright (C) 1993-2018 Free Software Foundation, Inc.
3
4 Full i860 support contributed by Jason Eckhardt <jle@cygnus.com>.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf/i860.h"
28
29 /* special_function for R_860_PC26 relocation. */
30 static bfd_reloc_status_type
31 i860_howto_pc26_reloc (bfd *abfd ATTRIBUTE_UNUSED,
32 arelent *reloc_entry,
33 asymbol *symbol,
34 void *data ATTRIBUTE_UNUSED,
35 asection *input_section,
36 bfd *output_bfd,
37 char **error_message ATTRIBUTE_UNUSED)
38 {
39 bfd_vma insn;
40 bfd_vma relocation;
41 bfd_byte *addr;
42
43 if (output_bfd != NULL
44 && (symbol->flags & BSF_SECTION_SYM) == 0
45 && (! reloc_entry->howto->partial_inplace
46 || reloc_entry->addend == 0))
47 {
48 reloc_entry->address += input_section->output_offset;
49 return bfd_reloc_ok;
50 }
51
52 /* Used elf32-mips.c as an example. */
53 if (bfd_is_und_section (symbol->section)
54 && output_bfd == (bfd *) NULL)
55 return bfd_reloc_undefined;
56
57 if (bfd_is_com_section (symbol->section))
58 relocation = 0;
59 else
60 relocation = symbol->value;
61
62 relocation += symbol->section->output_section->vma;
63 relocation += symbol->section->output_offset;
64 relocation += reloc_entry->addend;
65
66 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
67 return bfd_reloc_outofrange;
68
69 /* Adjust for PC-relative relocation. */
70 relocation -= (input_section->output_section->vma
71 + input_section->output_offset
72 + reloc_entry->address
73 + 4);
74
75 /* Check for target out of range. */
76 if ((bfd_signed_vma)relocation > (0x3ffffff << 2)
77 || (bfd_signed_vma)relocation < (-0x4000000 * 4))
78 return bfd_reloc_outofrange;
79
80 addr = (bfd_byte *) data + reloc_entry->address;
81 insn = bfd_get_32 (abfd, addr);
82
83 relocation >>= reloc_entry->howto->rightshift;
84 insn = (insn & ~reloc_entry->howto->dst_mask)
85 | (relocation & reloc_entry->howto->dst_mask);
86
87 bfd_put_32 (abfd, (bfd_vma) insn, addr);
88
89 return bfd_reloc_ok;
90 }
91
92 /* special_function for R_860_PC16 relocation. */
93 static bfd_reloc_status_type
94 i860_howto_pc16_reloc (bfd *abfd,
95 arelent *reloc_entry,
96 asymbol *symbol,
97 void *data,
98 asection *input_section,
99 bfd *output_bfd,
100 char **error_message ATTRIBUTE_UNUSED)
101 {
102 bfd_vma insn;
103 bfd_vma relocation;
104 bfd_byte *addr;
105
106 if (output_bfd != NULL
107 && (symbol->flags & BSF_SECTION_SYM) == 0
108 && (! reloc_entry->howto->partial_inplace
109 || reloc_entry->addend == 0))
110 {
111 reloc_entry->address += input_section->output_offset;
112 return bfd_reloc_ok;
113 }
114
115 /* Used elf32-mips.c as an example. */
116 if (bfd_is_und_section (symbol->section)
117 && output_bfd == (bfd *) NULL)
118 return bfd_reloc_undefined;
119
120 if (bfd_is_com_section (symbol->section))
121 relocation = 0;
122 else
123 relocation = symbol->value;
124
125 relocation += symbol->section->output_section->vma;
126 relocation += symbol->section->output_offset;
127 relocation += reloc_entry->addend;
128
129 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
130 return bfd_reloc_outofrange;
131
132 /* Adjust for PC-relative relocation. */
133 relocation -= (input_section->output_section->vma
134 + input_section->output_offset
135 + reloc_entry->address
136 + 4);
137
138 /* Check for target out of range. */
139 if ((bfd_signed_vma)relocation > (0x7fff << 2)
140 || (bfd_signed_vma)relocation < (-0x8000 * 4))
141 return bfd_reloc_outofrange;
142
143 addr = (bfd_byte *) data + reloc_entry->address;
144 insn = bfd_get_32 (abfd, addr);
145
146 relocation >>= reloc_entry->howto->rightshift;
147 relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
148 & reloc_entry->howto->dst_mask;
149 insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
150
151 bfd_put_32 (abfd, (bfd_vma) insn, addr);
152
153 return bfd_reloc_ok;
154 }
155
156 /* special_function for R_860_HIGHADJ relocation. */
157 static bfd_reloc_status_type
158 i860_howto_highadj_reloc (bfd *abfd,
159 arelent *reloc_entry,
160 asymbol *symbol,
161 void *data,
162 asection *input_section,
163 bfd *output_bfd,
164 char **error_message ATTRIBUTE_UNUSED)
165 {
166 bfd_vma insn;
167 bfd_vma relocation;
168 bfd_byte *addr;
169
170 if (output_bfd != NULL
171 && (symbol->flags & BSF_SECTION_SYM) == 0
172 && (! reloc_entry->howto->partial_inplace
173 || reloc_entry->addend == 0))
174 {
175 reloc_entry->address += input_section->output_offset;
176 return bfd_reloc_ok;
177 }
178
179 /* Used elf32-mips.c as an example. */
180 if (bfd_is_und_section (symbol->section)
181 && output_bfd == (bfd *) NULL)
182 return bfd_reloc_undefined;
183
184 if (bfd_is_com_section (symbol->section))
185 relocation = 0;
186 else
187 relocation = symbol->value;
188
189 relocation += symbol->section->output_section->vma;
190 relocation += symbol->section->output_offset;
191 relocation += reloc_entry->addend;
192 relocation += 0x8000;
193
194 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
195 return bfd_reloc_outofrange;
196
197 addr = (bfd_byte *) data + reloc_entry->address;
198 insn = bfd_get_32 (abfd, addr);
199
200 relocation = ((relocation >> 16) & 0xffff);
201
202 insn = (insn & 0xffff0000) | relocation;
203
204 bfd_put_32 (abfd, (bfd_vma) insn, addr);
205
206 return bfd_reloc_ok;
207 }
208
209 /* special_function for R_860_SPLITn relocations. */
210 static bfd_reloc_status_type
211 i860_howto_splitn_reloc (bfd *abfd,
212 arelent *reloc_entry,
213 asymbol *symbol,
214 void *data,
215 asection *input_section,
216 bfd *output_bfd,
217 char **error_message ATTRIBUTE_UNUSED)
218 {
219 bfd_vma insn;
220 bfd_vma relocation;
221 bfd_byte *addr;
222
223 if (output_bfd != NULL
224 && (symbol->flags & BSF_SECTION_SYM) == 0
225 && (! reloc_entry->howto->partial_inplace
226 || reloc_entry->addend == 0))
227 {
228 reloc_entry->address += input_section->output_offset;
229 return bfd_reloc_ok;
230 }
231
232 /* Used elf32-mips.c as an example. */
233 if (bfd_is_und_section (symbol->section)
234 && output_bfd == (bfd *) NULL)
235 return bfd_reloc_undefined;
236
237 if (bfd_is_com_section (symbol->section))
238 relocation = 0;
239 else
240 relocation = symbol->value;
241
242 relocation += symbol->section->output_section->vma;
243 relocation += symbol->section->output_offset;
244 relocation += reloc_entry->addend;
245
246 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
247 return bfd_reloc_outofrange;
248
249 addr = (bfd_byte *) data + reloc_entry->address;
250 insn = bfd_get_32 (abfd, addr);
251
252 relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
253 & reloc_entry->howto->dst_mask;
254 insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
255
256 bfd_put_32 (abfd, (bfd_vma) insn, addr);
257
258 return bfd_reloc_ok;
259 }
260
261 /* This howto table is preliminary. */
262 static reloc_howto_type elf32_i860_howto_table [] =
263 {
264 /* This relocation does nothing. */
265 HOWTO (R_860_NONE, /* type */
266 0, /* rightshift */
267 3, /* size (0 = byte, 1 = short, 2 = long) */
268 0, /* bitsize */
269 FALSE, /* pc_relative */
270 0, /* bitpos */
271 complain_overflow_dont, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_860_NONE", /* name */
274 FALSE, /* partial_inplace */
275 0, /* src_mask */
276 0, /* dst_mask */
277 FALSE), /* pcrel_offset */
278
279 /* A 32-bit absolute relocation. */
280 HOWTO (R_860_32, /* type */
281 0, /* rightshift */
282 2, /* size (0 = byte, 1 = short, 2 = long) */
283 32, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_bitfield, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_860_32", /* name */
289 FALSE, /* partial_inplace */
290 0xffffffff, /* src_mask */
291 0xffffffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 HOWTO (R_860_COPY, /* type */
295 0, /* rightshift */
296 2, /* size (0 = byte, 1 = short, 2 = long) */
297 32, /* bitsize */
298 FALSE, /* pc_relative */
299 0, /* bitpos */
300 complain_overflow_bitfield, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_860_COPY", /* name */
303 TRUE, /* partial_inplace */
304 0xffffffff, /* src_mask */
305 0xffffffff, /* dst_mask */
306 FALSE), /* pcrel_offset */
307
308 HOWTO (R_860_GLOB_DAT, /* type */
309 0, /* rightshift */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
311 32, /* bitsize */
312 FALSE, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_860_GLOB_DAT", /* name */
317 TRUE, /* partial_inplace */
318 0xffffffff, /* src_mask */
319 0xffffffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
321
322 HOWTO (R_860_JUMP_SLOT, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 32, /* bitsize */
326 FALSE, /* pc_relative */
327 0, /* bitpos */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_860_JUMP_SLOT", /* name */
331 TRUE, /* partial_inplace */
332 0xffffffff, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
335
336 HOWTO (R_860_RELATIVE, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 32, /* bitsize */
340 FALSE, /* pc_relative */
341 0, /* bitpos */
342 complain_overflow_bitfield, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_860_RELATIVE", /* name */
345 TRUE, /* partial_inplace */
346 0xffffffff, /* src_mask */
347 0xffffffff, /* dst_mask */
348 FALSE), /* pcrel_offset */
349
350 /* A 26-bit PC-relative relocation. */
351 HOWTO (R_860_PC26, /* type */
352 2, /* rightshift */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
354 26, /* bitsize */
355 TRUE, /* pc_relative */
356 0, /* bitpos */
357 complain_overflow_bitfield, /* complain_on_overflow */
358 i860_howto_pc26_reloc, /* special_function */
359 "R_860_PC26", /* name */
360 FALSE, /* partial_inplace */
361 0x3ffffff, /* src_mask */
362 0x3ffffff, /* dst_mask */
363 TRUE), /* pcrel_offset */
364
365 HOWTO (R_860_PLT26, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 26, /* bitsize */
369 TRUE, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_bitfield, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_860_PLT26", /* name */
374 TRUE, /* partial_inplace */
375 0xffffffff, /* src_mask */
376 0xffffffff, /* dst_mask */
377 TRUE), /* pcrel_offset */
378
379 /* A 16-bit PC-relative relocation. */
380 HOWTO (R_860_PC16, /* type */
381 2, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
384 TRUE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 i860_howto_pc16_reloc, /* special_function */
388 "R_860_PC16", /* name */
389 FALSE, /* partial_inplace */
390 0x1f07ff, /* src_mask */
391 0x1f07ff, /* dst_mask */
392 TRUE), /* pcrel_offset */
393
394 HOWTO (R_860_LOW0, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 FALSE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_dont, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_860_LOW0", /* name */
403 FALSE, /* partial_inplace */
404 0xffff, /* src_mask */
405 0xffff, /* dst_mask */
406 FALSE), /* pcrel_offset */
407
408 HOWTO (R_860_SPLIT0, /* type */
409 0, /* rightshift */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
411 16, /* bitsize */
412 FALSE, /* pc_relative */
413 0, /* bitpos */
414 complain_overflow_dont, /* complain_on_overflow */
415 i860_howto_splitn_reloc, /* special_function */
416 "R_860_SPLIT0", /* name */
417 FALSE, /* partial_inplace */
418 0x1f07ff, /* src_mask */
419 0x1f07ff, /* dst_mask */
420 FALSE), /* pcrel_offset */
421
422 HOWTO (R_860_LOW1, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 16, /* bitsize */
426 FALSE, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_dont, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_860_LOW1", /* name */
431 FALSE, /* partial_inplace */
432 0xfffe, /* src_mask */
433 0xfffe, /* dst_mask */
434 FALSE), /* pcrel_offset */
435
436 HOWTO (R_860_SPLIT1, /* type */
437 0, /* rightshift */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
439 16, /* bitsize */
440 FALSE, /* pc_relative */
441 0, /* bitpos */
442 complain_overflow_dont, /* complain_on_overflow */
443 i860_howto_splitn_reloc, /* special_function */
444 "R_860_SPLIT1", /* name */
445 FALSE, /* partial_inplace */
446 0x1f07fe, /* src_mask */
447 0x1f07fe, /* dst_mask */
448 FALSE), /* pcrel_offset */
449
450 HOWTO (R_860_LOW2, /* type */
451 0, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 16, /* bitsize */
454 FALSE, /* pc_relative */
455 0, /* bitpos */
456 complain_overflow_dont, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_860_LOW2", /* name */
459 FALSE, /* partial_inplace */
460 0xfffc, /* src_mask */
461 0xfffc, /* dst_mask */
462 FALSE), /* pcrel_offset */
463
464 HOWTO (R_860_SPLIT2, /* type */
465 0, /* rightshift */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
467 16, /* bitsize */
468 FALSE, /* pc_relative */
469 0, /* bitpos */
470 complain_overflow_dont, /* complain_on_overflow */
471 i860_howto_splitn_reloc, /* special_function */
472 "R_860_SPLIT2", /* name */
473 FALSE, /* partial_inplace */
474 0x1f07fc, /* src_mask */
475 0x1f07fc, /* dst_mask */
476 FALSE), /* pcrel_offset */
477
478 HOWTO (R_860_LOW3, /* type */
479 0, /* rightshift */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
481 16, /* bitsize */
482 FALSE, /* pc_relative */
483 0, /* bitpos */
484 complain_overflow_dont, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_860_LOW3", /* name */
487 FALSE, /* partial_inplace */
488 0xfff8, /* src_mask */
489 0xfff8, /* dst_mask */
490 FALSE), /* pcrel_offset */
491
492 HOWTO (R_860_LOGOT0, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 16, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_dont, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_860_LOGOT0", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xffff, /* dst_mask */
504 TRUE), /* pcrel_offset */
505
506 HOWTO (R_860_SPGOT0, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 16, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_dont, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_860_SPGOT0", /* name */
515 FALSE, /* partial_inplace */
516 0, /* src_mask */
517 0xffff, /* dst_mask */
518 TRUE), /* pcrel_offset */
519
520 HOWTO (R_860_LOGOT1, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 16, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_dont, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_860_LOGOT1", /* name */
529 FALSE, /* partial_inplace */
530 0, /* src_mask */
531 0xffff, /* dst_mask */
532 TRUE), /* pcrel_offset */
533
534 HOWTO (R_860_SPGOT1, /* type */
535 0, /* rightshift */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
537 16, /* bitsize */
538 FALSE, /* pc_relative */
539 0, /* bitpos */
540 complain_overflow_dont, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_860_SPGOT1", /* name */
543 FALSE, /* partial_inplace */
544 0, /* src_mask */
545 0xffff, /* dst_mask */
546 TRUE), /* pcrel_offset */
547
548 HOWTO (R_860_LOGOTOFF0, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 FALSE, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_dont, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_860_LOGOTOFF0", /* name */
557 TRUE, /* partial_inplace */
558 0xffffffff, /* src_mask */
559 0xffffffff, /* dst_mask */
560 FALSE), /* pcrel_offset */
561
562 HOWTO (R_860_SPGOTOFF0, /* type */
563 0, /* rightshift */
564 2, /* size (0 = byte, 1 = short, 2 = long) */
565 32, /* bitsize */
566 FALSE, /* pc_relative */
567 0, /* bitpos */
568 complain_overflow_dont, /* complain_on_overflow */
569 bfd_elf_generic_reloc, /* special_function */
570 "R_860_SPGOTOFF0", /* name */
571 TRUE, /* partial_inplace */
572 0xffffffff, /* src_mask */
573 0xffffffff, /* dst_mask */
574 FALSE), /* pcrel_offset */
575
576 HOWTO (R_860_LOGOTOFF1, /* type */
577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 32, /* bitsize */
580 FALSE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_dont, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_860_LOGOTOFF1", /* name */
585 TRUE, /* partial_inplace */
586 0xffffffff, /* src_mask */
587 0xffffffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
589
590 HOWTO (R_860_SPGOTOFF1, /* type */
591 0, /* rightshift */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
593 32, /* bitsize */
594 FALSE, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_dont, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_860_SPGOTOFF1", /* name */
599 TRUE, /* partial_inplace */
600 0xffffffff, /* src_mask */
601 0xffffffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
603
604 HOWTO (R_860_LOGOTOFF2, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
608 FALSE, /* pc_relative */
609 0, /* bitpos */
610 complain_overflow_dont, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_860_LOGOTOFF2", /* name */
613 TRUE, /* partial_inplace */
614 0xffffffff, /* src_mask */
615 0xffffffff, /* dst_mask */
616 FALSE), /* pcrel_offset */
617
618 HOWTO (R_860_LOGOTOFF3, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
622 FALSE, /* pc_relative */
623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_860_LOGOTOFF3", /* name */
627 TRUE, /* partial_inplace */
628 0xffffffff, /* src_mask */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
631
632 HOWTO (R_860_LOPC, /* type */
633 0, /* rightshift */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
635 16, /* bitsize */
636 TRUE, /* pc_relative */
637 0, /* bitpos */
638 complain_overflow_bitfield, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_860_LOPC", /* name */
641 FALSE, /* partial_inplace */
642 0xffff, /* src_mask */
643 0xffff, /* dst_mask */
644 TRUE), /* pcrel_offset */
645
646 HOWTO (R_860_HIGHADJ, /* type */
647 0, /* rightshift */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
649 16, /* bitsize */
650 FALSE, /* pc_relative */
651 0, /* bitpos */
652 complain_overflow_dont, /* complain_on_overflow */
653 i860_howto_highadj_reloc, /* special_function */
654 "R_860_HIGHADJ", /* name */
655 FALSE, /* partial_inplace */
656 0xffff, /* src_mask */
657 0xffff, /* dst_mask */
658 FALSE), /* pcrel_offset */
659
660 HOWTO (R_860_HAGOT, /* type */
661 0, /* rightshift */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
663 16, /* bitsize */
664 FALSE, /* pc_relative */
665 0, /* bitpos */
666 complain_overflow_dont, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_860_HAGOT", /* name */
669 FALSE, /* partial_inplace */
670 0, /* src_mask */
671 0xffff, /* dst_mask */
672 TRUE), /* pcrel_offset */
673
674 HOWTO (R_860_HAGOTOFF, /* type */
675 0, /* rightshift */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
677 32, /* bitsize */
678 FALSE, /* pc_relative */
679 0, /* bitpos */
680 complain_overflow_dont, /* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_860_HAGOTOFF", /* name */
683 TRUE, /* partial_inplace */
684 0xffffffff, /* src_mask */
685 0xffffffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
687
688 HOWTO (R_860_HAPC, /* type */
689 0, /* rightshift */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
691 16, /* bitsize */
692 TRUE, /* pc_relative */
693 0, /* bitpos */
694 complain_overflow_bitfield, /* complain_on_overflow */
695 bfd_elf_generic_reloc, /* special_function */
696 "R_860_HAPC", /* name */
697 FALSE, /* partial_inplace */
698 0xffff, /* src_mask */
699 0xffff, /* dst_mask */
700 TRUE), /* pcrel_offset */
701
702 HOWTO (R_860_HIGH, /* type */
703 16, /* rightshift */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_dont, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_860_HIGH", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 HOWTO (R_860_HIGOT, /* type */
717 0, /* rightshift */
718 2, /* size (0 = byte, 1 = short, 2 = long) */
719 16, /* bitsize */
720 FALSE, /* pc_relative */
721 0, /* bitpos */
722 complain_overflow_dont, /* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_860_HIGOT", /* name */
725 FALSE, /* partial_inplace */
726 0, /* src_mask */
727 0xffff, /* dst_mask */
728 TRUE), /* pcrel_offset */
729
730 HOWTO (R_860_HIGOTOFF, /* type */
731 0, /* rightshift */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
733 32, /* bitsize */
734 FALSE, /* pc_relative */
735 0, /* bitpos */
736 complain_overflow_dont, /* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
738 "R_860_HIGOTOFF", /* name */
739 TRUE, /* partial_inplace */
740 0xffffffff, /* src_mask */
741 0xffffffff, /* dst_mask */
742 FALSE), /* pcrel_offset */
743 };
744 \f
745 static unsigned char elf_code_to_howto_index[R_860_max + 1];
746
747 static reloc_howto_type *
748 lookup_howto (unsigned int rtype)
749 {
750 static int initialized = 0;
751 int i;
752 int howto_tbl_size = (int) (sizeof (elf32_i860_howto_table)
753 / sizeof (elf32_i860_howto_table[0]));
754
755 if (! initialized)
756 {
757 initialized = 1;
758 memset (elf_code_to_howto_index, 0xff,
759 sizeof (elf_code_to_howto_index));
760 for (i = 0; i < howto_tbl_size; i++)
761 elf_code_to_howto_index[elf32_i860_howto_table[i].type] = i;
762 }
763
764 if (rtype > R_860_max)
765 return NULL;
766 i = elf_code_to_howto_index[rtype];
767 if (i >= howto_tbl_size)
768 return NULL;
769 return elf32_i860_howto_table + i;
770 }
771
772 /* Given a BFD reloc, return the matching HOWTO structure. */
773 static reloc_howto_type *
774 elf32_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
775 bfd_reloc_code_real_type code)
776 {
777 unsigned int rtype;
778
779 switch (code)
780 {
781 case BFD_RELOC_NONE:
782 rtype = R_860_NONE;
783 break;
784 case BFD_RELOC_32:
785 rtype = R_860_32;
786 break;
787 case BFD_RELOC_860_COPY:
788 rtype = R_860_COPY;
789 break;
790 case BFD_RELOC_860_GLOB_DAT:
791 rtype = R_860_GLOB_DAT;
792 break;
793 case BFD_RELOC_860_JUMP_SLOT:
794 rtype = R_860_JUMP_SLOT;
795 break;
796 case BFD_RELOC_860_RELATIVE:
797 rtype = R_860_RELATIVE;
798 break;
799 case BFD_RELOC_860_PC26:
800 rtype = R_860_PC26;
801 break;
802 case BFD_RELOC_860_PLT26:
803 rtype = R_860_PLT26;
804 break;
805 case BFD_RELOC_860_PC16:
806 rtype = R_860_PC16;
807 break;
808 case BFD_RELOC_860_LOW0:
809 rtype = R_860_LOW0;
810 break;
811 case BFD_RELOC_860_SPLIT0:
812 rtype = R_860_SPLIT0;
813 break;
814 case BFD_RELOC_860_LOW1:
815 rtype = R_860_LOW1;
816 break;
817 case BFD_RELOC_860_SPLIT1:
818 rtype = R_860_SPLIT1;
819 break;
820 case BFD_RELOC_860_LOW2:
821 rtype = R_860_LOW2;
822 break;
823 case BFD_RELOC_860_SPLIT2:
824 rtype = R_860_SPLIT2;
825 break;
826 case BFD_RELOC_860_LOW3:
827 rtype = R_860_LOW3;
828 break;
829 case BFD_RELOC_860_LOGOT0:
830 rtype = R_860_LOGOT0;
831 break;
832 case BFD_RELOC_860_SPGOT0:
833 rtype = R_860_SPGOT0;
834 break;
835 case BFD_RELOC_860_LOGOT1:
836 rtype = R_860_LOGOT1;
837 break;
838 case BFD_RELOC_860_SPGOT1:
839 rtype = R_860_SPGOT1;
840 break;
841 case BFD_RELOC_860_LOGOTOFF0:
842 rtype = R_860_LOGOTOFF0;
843 break;
844 case BFD_RELOC_860_SPGOTOFF0:
845 rtype = R_860_SPGOTOFF0;
846 break;
847 case BFD_RELOC_860_LOGOTOFF1:
848 rtype = R_860_LOGOTOFF1;
849 break;
850 case BFD_RELOC_860_SPGOTOFF1:
851 rtype = R_860_SPGOTOFF1;
852 break;
853 case BFD_RELOC_860_LOGOTOFF2:
854 rtype = R_860_LOGOTOFF2;
855 break;
856 case BFD_RELOC_860_LOGOTOFF3:
857 rtype = R_860_LOGOTOFF3;
858 break;
859 case BFD_RELOC_860_LOPC:
860 rtype = R_860_LOPC;
861 break;
862 case BFD_RELOC_860_HIGHADJ:
863 rtype = R_860_HIGHADJ;
864 break;
865 case BFD_RELOC_860_HAGOT:
866 rtype = R_860_HAGOT;
867 break;
868 case BFD_RELOC_860_HAGOTOFF:
869 rtype = R_860_HAGOTOFF;
870 break;
871 case BFD_RELOC_860_HAPC:
872 rtype = R_860_HAPC;
873 break;
874 case BFD_RELOC_860_HIGH:
875 rtype = R_860_HIGH;
876 break;
877 case BFD_RELOC_860_HIGOT:
878 rtype = R_860_HIGOT;
879 break;
880 case BFD_RELOC_860_HIGOTOFF:
881 rtype = R_860_HIGOTOFF;
882 break;
883 default:
884 return NULL;
885 }
886 return lookup_howto (rtype);
887 }
888
889 static reloc_howto_type *
890 elf32_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
891 const char *r_name)
892 {
893 unsigned int i;
894
895 for (i = 0;
896 i < (sizeof (elf32_i860_howto_table)
897 / sizeof (elf32_i860_howto_table[0]));
898 i++)
899 if (elf32_i860_howto_table[i].name != NULL
900 && strcasecmp (elf32_i860_howto_table[i].name, r_name) == 0)
901 return &elf32_i860_howto_table[i];
902
903 return NULL;
904 }
905
906 /* Given a ELF reloc, return the matching HOWTO structure. */
907
908 static bfd_boolean
909 elf32_i860_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
910 arelent *bfd_reloc,
911 Elf_Internal_Rela *elf_reloc)
912 {
913 bfd_reloc->howto
914 = lookup_howto ((unsigned) ELF32_R_TYPE (elf_reloc->r_info));
915 return bfd_reloc->howto != NULL;
916 }
917 \f
918 /* Specialized relocation handler for R_860_SPLITn. These relocations
919 involves a 16-bit field that is split into two contiguous parts. */
920 static bfd_reloc_status_type
921 elf32_i860_relocate_splitn (bfd *input_bfd,
922 Elf_Internal_Rela *rello,
923 bfd_byte *contents,
924 bfd_vma value)
925 {
926 bfd_vma insn;
927 reloc_howto_type *howto;
928 howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info));
929 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
930
931 /* Relocate. */
932 value += rello->r_addend;
933
934 /* Separate the fields and insert. */
935 value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask;
936 insn = (insn & ~howto->dst_mask) | value;
937
938 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
939 return bfd_reloc_ok;
940 }
941
942 /* Specialized relocation handler for R_860_PC16. This relocation
943 involves a 16-bit, PC-relative field that is split into two contiguous
944 parts. */
945 static bfd_reloc_status_type
946 elf32_i860_relocate_pc16 (bfd *input_bfd,
947 asection *input_section,
948 Elf_Internal_Rela *rello,
949 bfd_byte *contents,
950 bfd_vma value)
951 {
952 bfd_vma insn;
953 reloc_howto_type *howto;
954 howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info));
955 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
956
957 /* Adjust for PC-relative relocation. */
958 value -= (input_section->output_section->vma
959 + input_section->output_offset);
960 value -= rello->r_offset;
961
962 /* Relocate. */
963 value += rello->r_addend;
964
965 /* Adjust the value by 4, then separate the fields and insert. */
966 value = (value - 4) >> howto->rightshift;
967 value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask;
968 insn = (insn & ~howto->dst_mask) | value;
969
970 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
971 return bfd_reloc_ok;
972
973 }
974
975 /* Specialized relocation handler for R_860_PC26. This relocation
976 involves a 26-bit, PC-relative field which must be adjusted by 4. */
977 static bfd_reloc_status_type
978 elf32_i860_relocate_pc26 (bfd *input_bfd,
979 asection *input_section,
980 Elf_Internal_Rela *rello,
981 bfd_byte *contents,
982 bfd_vma value)
983 {
984 bfd_vma insn;
985 reloc_howto_type *howto;
986 howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info));
987 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
988
989 /* Adjust for PC-relative relocation. */
990 value -= (input_section->output_section->vma
991 + input_section->output_offset);
992 value -= rello->r_offset;
993
994 /* Relocate. */
995 value += rello->r_addend;
996
997 /* Adjust value by 4 and insert the field. */
998 value = ((value - 4) >> howto->rightshift) & howto->dst_mask;
999 insn = (insn & ~howto->dst_mask) | value;
1000
1001 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1002 return bfd_reloc_ok;
1003
1004 }
1005
1006 /* Specialized relocation handler for R_860_HIGHADJ. */
1007 static bfd_reloc_status_type
1008 elf32_i860_relocate_highadj (bfd *input_bfd,
1009 Elf_Internal_Rela *rel,
1010 bfd_byte *contents,
1011 bfd_vma value)
1012 {
1013 bfd_vma insn;
1014
1015 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
1016
1017 value += rel->r_addend;
1018 value += 0x8000;
1019 value = ((value >> 16) & 0xffff);
1020
1021 insn = (insn & 0xffff0000) | value;
1022
1023 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
1024 return bfd_reloc_ok;
1025 }
1026
1027 /* Perform a single relocation. By default we use the standard BFD
1028 routines. However, we handle some specially. */
1029 static bfd_reloc_status_type
1030 i860_final_link_relocate (reloc_howto_type *howto,
1031 bfd *input_bfd,
1032 asection *input_section,
1033 bfd_byte *contents,
1034 Elf_Internal_Rela *rel,
1035 bfd_vma relocation)
1036 {
1037 return _bfd_final_link_relocate (howto, input_bfd, input_section,
1038 contents, rel->r_offset, relocation,
1039 rel->r_addend);
1040 }
1041
1042 /* Relocate an i860 ELF section.
1043
1044 This is boiler-plate code copied from fr30.
1045
1046 The RELOCATE_SECTION function is called by the new ELF backend linker
1047 to handle the relocations for a section.
1048
1049 The relocs are always passed as Rela structures; if the section
1050 actually uses Rel structures, the r_addend field will always be
1051 zero.
1052
1053 This function is responsible for adjusting the section contents as
1054 necessary, and (if using Rela relocs and generating a relocatable
1055 output file) adjusting the reloc addend as necessary.
1056
1057 This function does not have to worry about setting the reloc
1058 address or the reloc symbol index.
1059
1060 LOCAL_SYMS is a pointer to the swapped in local symbols.
1061
1062 LOCAL_SECTIONS is an array giving the section in the input file
1063 corresponding to the st_shndx field of each local symbol.
1064
1065 The global hash table entry for the global symbols can be found
1066 via elf_sym_hashes (input_bfd).
1067
1068 When generating relocatable output, this function must handle
1069 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1070 going to be the section symbol corresponding to the output
1071 section, which means that the addend must be adjusted
1072 accordingly. */
1073 static bfd_boolean
1074 elf32_i860_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
1075 struct bfd_link_info *info,
1076 bfd *input_bfd,
1077 asection *input_section,
1078 bfd_byte *contents,
1079 Elf_Internal_Rela *relocs,
1080 Elf_Internal_Sym *local_syms,
1081 asection **local_sections)
1082 {
1083 Elf_Internal_Shdr *symtab_hdr;
1084 struct elf_link_hash_entry **sym_hashes;
1085 Elf_Internal_Rela *rel;
1086 Elf_Internal_Rela *relend;
1087
1088 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1089 sym_hashes = elf_sym_hashes (input_bfd);
1090 relend = relocs + input_section->reloc_count;
1091
1092 for (rel = relocs; rel < relend; rel ++)
1093 {
1094 reloc_howto_type * howto;
1095 unsigned long r_symndx;
1096 Elf_Internal_Sym * sym;
1097 asection * sec;
1098 struct elf_link_hash_entry * h;
1099 bfd_vma relocation;
1100 bfd_reloc_status_type r;
1101 const char * name = NULL;
1102 int r_type;
1103
1104 r_type = ELF32_R_TYPE (rel->r_info);
1105 r_symndx = ELF32_R_SYM (rel->r_info);
1106
1107 howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info));
1108 h = NULL;
1109 sym = NULL;
1110 sec = NULL;
1111
1112 if (r_symndx < symtab_hdr->sh_info)
1113 {
1114 sym = local_syms + r_symndx;
1115 sec = local_sections [r_symndx];
1116 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1117
1118 name = bfd_elf_string_from_elf_section
1119 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1120 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1121 }
1122 else
1123 {
1124 bfd_boolean unresolved_reloc, warned, ignored;
1125
1126 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1127 r_symndx, symtab_hdr, sym_hashes,
1128 h, sec, relocation,
1129 unresolved_reloc, warned, ignored);
1130 }
1131
1132 if (sec != NULL && discarded_section (sec))
1133 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1134 rel, 1, relend, howto, 0, contents);
1135
1136 if (bfd_link_relocatable (info))
1137 continue;
1138
1139 switch (r_type)
1140 {
1141 default:
1142 r = i860_final_link_relocate (howto, input_bfd, input_section,
1143 contents, rel, relocation);
1144 break;
1145
1146 case R_860_HIGHADJ:
1147 r = elf32_i860_relocate_highadj (input_bfd, rel, contents,
1148 relocation);
1149 break;
1150
1151 case R_860_PC16:
1152 r = elf32_i860_relocate_pc16 (input_bfd, input_section, rel,
1153 contents, relocation);
1154 break;
1155
1156 case R_860_PC26:
1157 r = elf32_i860_relocate_pc26 (input_bfd, input_section, rel,
1158 contents, relocation);
1159 break;
1160
1161 case R_860_SPLIT0:
1162 case R_860_SPLIT1:
1163 case R_860_SPLIT2:
1164 r = elf32_i860_relocate_splitn (input_bfd, rel, contents,
1165 relocation);
1166 break;
1167
1168 /* We do not yet handle GOT/PLT/Dynamic relocations. */
1169 case R_860_COPY:
1170 case R_860_GLOB_DAT:
1171 case R_860_JUMP_SLOT:
1172 case R_860_RELATIVE:
1173 case R_860_PLT26:
1174 case R_860_LOGOT0:
1175 case R_860_SPGOT0:
1176 case R_860_LOGOT1:
1177 case R_860_SPGOT1:
1178 case R_860_LOGOTOFF0:
1179 case R_860_SPGOTOFF0:
1180 case R_860_LOGOTOFF1:
1181 case R_860_SPGOTOFF1:
1182 case R_860_LOGOTOFF2:
1183 case R_860_LOGOTOFF3:
1184 case R_860_LOPC:
1185 case R_860_HAGOT:
1186 case R_860_HAGOTOFF:
1187 case R_860_HAPC:
1188 case R_860_HIGOT:
1189 case R_860_HIGOTOFF:
1190 r = bfd_reloc_notsupported;
1191 break;
1192 }
1193
1194 if (r != bfd_reloc_ok)
1195 {
1196 const char * msg = (const char *) NULL;
1197
1198 switch (r)
1199 {
1200 case bfd_reloc_overflow:
1201 (*info->callbacks->reloc_overflow)
1202 (info, (h ? &h->root : NULL), name, howto->name,
1203 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1204 break;
1205
1206 case bfd_reloc_undefined:
1207 (*info->callbacks->undefined_symbol)
1208 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1209 break;
1210
1211 case bfd_reloc_outofrange:
1212 msg = _("internal error: out of range error");
1213 break;
1214
1215 case bfd_reloc_notsupported:
1216 msg = _("internal error: unsupported relocation error");
1217 break;
1218
1219 case bfd_reloc_dangerous:
1220 msg = _("internal error: dangerous relocation");
1221 break;
1222
1223 default:
1224 msg = _("internal error: unknown error");
1225 break;
1226 }
1227
1228 if (msg)
1229 (*info->callbacks->warning) (info, msg, name, input_bfd,
1230 input_section, rel->r_offset);
1231 }
1232 }
1233
1234 return TRUE;
1235 }
1236
1237 /* Return whether a symbol name implies a local label. SVR4/860 compilers
1238 generate labels of the form ".ep.function_name" to denote the end of a
1239 function prolog. These should be local.
1240 ??? Do any other SVR4 compilers have this convention? If so, this should
1241 be added to the generic routine. */
1242 static bfd_boolean
1243 elf32_i860_is_local_label_name (bfd *abfd, const char *name)
1244 {
1245 if (name[0] == '.' && name[1] == 'e' && name[2] == 'p' && name[3] == '.')
1246 return TRUE;
1247
1248 return _bfd_elf_is_local_label_name (abfd, name);
1249 }
1250 \f
1251 #define TARGET_BIG_SYM i860_elf32_vec
1252 #define TARGET_BIG_NAME "elf32-i860"
1253 #define TARGET_LITTLE_SYM i860_elf32_le_vec
1254 #define TARGET_LITTLE_NAME "elf32-i860-little"
1255 #define ELF_ARCH bfd_arch_i860
1256 #define ELF_MACHINE_CODE EM_860
1257 #define ELF_MAXPAGESIZE 4096
1258
1259 #define elf_backend_rela_normal 1
1260 #define elf_info_to_howto_rel NULL
1261 #define elf_info_to_howto elf32_i860_info_to_howto_rela
1262 #define elf_backend_relocate_section elf32_i860_relocate_section
1263 #define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup
1264 #define bfd_elf32_bfd_reloc_name_lookup elf32_i860_reloc_name_lookup
1265 #define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name
1266
1267 #include "elf32-target.h"
GDB Binutils - Deliverables
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