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2001-05-09 H.J. Lu <hjl@gnu.org>
[binutils.git] / bfd / elf32-i860.c
blobe72b90c29bad3928f56400578164e5ca23372fd1
1 /* Intel i860 specific support for 32-bit ELF.
2 Copyright 1993, 1995, 1999, 2000, 2001 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/i860.h"
27
28 /* Prototypes. */
29 static reloc_howto_type *lookup_howto
30 PARAMS ((unsigned int));
31
32 static reloc_howto_type *elf32_i860_reloc_type_lookup
33 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
34
35 static void elf32_i860_info_to_howto_rela
36 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
37
38 static bfd_reloc_status_type elf32_i860_relocate_splitn
39 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
40
41 static bfd_reloc_status_type elf32_i860_relocate_pc16
42 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
43
44 static bfd_reloc_status_type elf32_i860_relocate_pc26
45 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
46
47 static bfd_reloc_status_type elf32_i860_relocate_highadj
48 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
49
50 static boolean elf32_i860_relocate_section
51 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
52 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
53
54 static bfd_reloc_status_type i860_final_link_relocate
55 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
56 Elf_Internal_Rela *, bfd_vma));
57
58 static boolean elf32_i860_is_local_label_name
59 PARAMS ((bfd *, const char *));
60
61 /* This howto table is preliminary. */
62 static reloc_howto_type elf32_i860_howto_table [] =
63 {
64 /* This relocation does nothing. */
65 HOWTO (R_860_NONE, /* type */
66 0, /* rightshift */
67 2, /* size (0 = byte, 1 = short, 2 = long) */
68 32, /* bitsize */
69 false, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_bitfield, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_860_NONE", /* name */
74 false, /* partial_inplace */
75 0, /* src_mask */
76 0, /* dst_mask */
77 false), /* pcrel_offset */
78
79 /* A 32-bit absolute relocation. */
80 HOWTO (R_860_32, /* type */
81 0, /* rightshift */
82 2, /* size (0 = byte, 1 = short, 2 = long) */
83 32, /* bitsize */
84 false, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_bitfield, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_860_32", /* name */
89 false, /* partial_inplace */
90 0xffffffff, /* src_mask */
91 0xffffffff, /* dst_mask */
92 false), /* pcrel_offset */
93
94 HOWTO (R_860_COPY, /* type */
95 0, /* rightshift */
96 2, /* size (0 = byte, 1 = short, 2 = long) */
97 32, /* bitsize */
98 false, /* pc_relative */
99 0, /* bitpos */
100 complain_overflow_bitfield, /* complain_on_overflow */
101 bfd_elf_generic_reloc, /* special_function */
102 "R_860_COPY", /* name */
103 true, /* partial_inplace */
104 0xffffffff, /* src_mask */
105 0xffffffff, /* dst_mask */
106 false), /* pcrel_offset */
107
108 HOWTO (R_860_GLOB_DAT, /* type */
109 0, /* rightshift */
110 2, /* size (0 = byte, 1 = short, 2 = long) */
111 32, /* bitsize */
112 false, /* pc_relative */
113 0, /* bitpos */
114 complain_overflow_bitfield, /* complain_on_overflow */
115 bfd_elf_generic_reloc, /* special_function */
116 "R_860_GLOB_DAT", /* name */
117 true, /* partial_inplace */
118 0xffffffff, /* src_mask */
119 0xffffffff, /* dst_mask */
120 false), /* pcrel_offset */
121
122 HOWTO (R_860_JUMP_SLOT, /* type */
123 0, /* rightshift */
124 2, /* size (0 = byte, 1 = short, 2 = long) */
125 32, /* bitsize */
126 false, /* pc_relative */
127 0, /* bitpos */
128 complain_overflow_bitfield, /* complain_on_overflow */
129 bfd_elf_generic_reloc, /* special_function */
130 "R_860_JUMP_SLOT", /* name */
131 true, /* partial_inplace */
132 0xffffffff, /* src_mask */
133 0xffffffff, /* dst_mask */
134 false), /* pcrel_offset */
135
136 HOWTO (R_860_RELATIVE, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 32, /* bitsize */
140 false, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 bfd_elf_generic_reloc, /* special_function */
144 "R_860_RELATIVE", /* name */
145 true, /* partial_inplace */
146 0xffffffff, /* src_mask */
147 0xffffffff, /* dst_mask */
148 false), /* pcrel_offset */
149
150 /* A 26-bit PC-relative relocation. */
151 HOWTO (R_860_PC26, /* type */
152 2, /* rightshift */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
154 26, /* bitsize */
155 true, /* pc_relative */
156 0, /* bitpos */
157 complain_overflow_bitfield, /* complain_on_overflow */
158 bfd_elf_generic_reloc, /* special_function */
159 "R_860_PC26", /* name */
160 false, /* partial_inplace */
161 0x3ffffff, /* src_mask */
162 0x3ffffff, /* dst_mask */
163 true), /* pcrel_offset */
164
165 HOWTO (R_860_PLT26, /* type */
166 0, /* rightshift */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
168 26, /* bitsize */
169 true, /* pc_relative */
170 0, /* bitpos */
171 complain_overflow_bitfield, /* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_860_PLT26", /* name */
174 true, /* partial_inplace */
175 0xffffffff, /* src_mask */
176 0xffffffff, /* dst_mask */
177 true), /* pcrel_offset */
178
179 /* A 16-bit PC-relative relocation. */
180 HOWTO (R_860_PC16, /* type */
181 2, /* rightshift */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
183 16, /* bitsize */
184 true, /* pc_relative */
185 0, /* bitpos */
186 complain_overflow_bitfield, /* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_860_PC16", /* name */
189 false, /* partial_inplace */
190 0x1f07ff, /* src_mask */
191 0x1f07ff, /* dst_mask */
192 true), /* pcrel_offset */
193
194 HOWTO (R_860_LOW0, /* type */
195 0, /* rightshift */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
197 16, /* bitsize */
198 false, /* pc_relative */
199 0, /* bitpos */
200 complain_overflow_dont, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_860_LOW0", /* name */
203 false, /* partial_inplace */
204 0xffff, /* src_mask */
205 0xffff, /* dst_mask */
206 false), /* pcrel_offset */
207
208 HOWTO (R_860_SPLIT0, /* type */
209 0, /* rightshift */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
211 16, /* bitsize */
212 false, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_860_SPLIT0", /* name */
217 false, /* partial_inplace */
218 0x1f07ff, /* src_mask */
219 0x1f07ff, /* dst_mask */
220 false), /* pcrel_offset */
221
222 HOWTO (R_860_LOW1, /* type */
223 0, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
225 16, /* bitsize */
226 false, /* pc_relative */
227 0, /* bitpos */
228 complain_overflow_dont, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_860_LOW1", /* name */
231 false, /* partial_inplace */
232 0xfffe, /* src_mask */
233 0xfffe, /* dst_mask */
234 false), /* pcrel_offset */
235
236 HOWTO (R_860_SPLIT1, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 16, /* bitsize */
240 false, /* pc_relative */
241 0, /* bitpos */
242 complain_overflow_dont, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_860_SPLIT1", /* name */
245 false, /* partial_inplace */
246 0x1f07fe, /* src_mask */
247 0x1f07fe, /* dst_mask */
248 false), /* pcrel_offset */
249
250 HOWTO (R_860_LOW2, /* type */
251 0, /* rightshift */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
254 false, /* pc_relative */
255 0, /* bitpos */
256 complain_overflow_dont, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_860_LOW2", /* name */
259 false, /* partial_inplace */
260 0xfffc, /* src_mask */
261 0xfffc, /* dst_mask */
262 false), /* pcrel_offset */
263
264 HOWTO (R_860_SPLIT2, /* type */
265 0, /* rightshift */
266 2, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 false, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_860_SPLIT2", /* name */
273 false, /* partial_inplace */
274 0x1f07fc, /* src_mask */
275 0x1f07fc, /* dst_mask */
276 false), /* pcrel_offset */
277
278 HOWTO (R_860_LOW3, /* type */
279 0, /* rightshift */
280 2, /* size (0 = byte, 1 = short, 2 = long) */
281 16, /* bitsize */
282 false, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_dont, /* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_860_LOW3", /* name */
287 false, /* partial_inplace */
288 0xfff8, /* src_mask */
289 0xfff8, /* dst_mask */
290 false), /* pcrel_offset */
291
292 HOWTO (R_860_LOGOT0, /* type */
293 0, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 16, /* bitsize */
296 false, /* pc_relative */
297 0, /* bitpos */
298 complain_overflow_dont, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_860_LOGOT0", /* name */
301 false, /* partial_inplace */
302 0, /* src_mask */
303 0xffff, /* dst_mask */
304 true), /* pcrel_offset */
305
306 HOWTO (R_860_SPGOT0, /* type */
307 0, /* rightshift */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
309 16, /* bitsize */
310 false, /* pc_relative */
311 0, /* bitpos */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_860_SPGOT0", /* name */
315 false, /* partial_inplace */
316 0, /* src_mask */
317 0xffff, /* dst_mask */
318 true), /* pcrel_offset */
319
320 HOWTO (R_860_LOGOT1, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
324 false, /* pc_relative */
325 0, /* bitpos */
326 complain_overflow_dont, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_860_LOGOT1", /* name */
329 false, /* partial_inplace */
330 0, /* src_mask */
331 0xffff, /* dst_mask */
332 true), /* pcrel_offset */
333
334 HOWTO (R_860_SPGOT1, /* type */
335 0, /* rightshift */
336 2, /* size (0 = byte, 1 = short, 2 = long) */
337 16, /* bitsize */
338 false, /* pc_relative */
339 0, /* bitpos */
340 complain_overflow_dont, /* complain_on_overflow */
341 bfd_elf_generic_reloc, /* special_function */
342 "R_860_SPGOT1", /* name */
343 false, /* partial_inplace */
344 0, /* src_mask */
345 0xffff, /* dst_mask */
346 true), /* pcrel_offset */
347
348 HOWTO (R_860_LOGOTOFF0, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 32, /* bitsize */
352 false, /* pc_relative */
353 0, /* bitpos */
354 complain_overflow_dont, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_860_LOGOTOFF0", /* name */
357 true, /* partial_inplace */
358 0xffffffff, /* src_mask */
359 0xffffffff, /* dst_mask */
360 false), /* pcrel_offset */
361
362 HOWTO (R_860_SPGOTOFF0, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 32, /* bitsize */
366 false, /* pc_relative */
367 0, /* bitpos */
368 complain_overflow_dont, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_860_SPGOTOFF0", /* name */
371 true, /* partial_inplace */
372 0xffffffff, /* src_mask */
373 0xffffffff, /* dst_mask */
374 false), /* pcrel_offset */
375
376 HOWTO (R_860_LOGOTOFF1, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 32, /* bitsize */
380 false, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_dont, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_860_LOGOTOFF1", /* name */
385 true, /* partial_inplace */
386 0xffffffff, /* src_mask */
387 0xffffffff, /* dst_mask */
388 false), /* pcrel_offset */
389
390 HOWTO (R_860_SPGOTOFF1, /* type */
391 0, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 32, /* bitsize */
394 false, /* pc_relative */
395 0, /* bitpos */
396 complain_overflow_dont, /* complain_on_overflow */
397 bfd_elf_generic_reloc, /* special_function */
398 "R_860_SPGOTOFF1", /* name */
399 true, /* partial_inplace */
400 0xffffffff, /* src_mask */
401 0xffffffff, /* dst_mask */
402 false), /* pcrel_offset */
403
404 HOWTO (R_860_LOGOTOFF2, /* type */
405 0, /* rightshift */
406 2, /* size (0 = byte, 1 = short, 2 = long) */
407 32, /* bitsize */
408 false, /* pc_relative */
409 0, /* bitpos */
410 complain_overflow_dont, /* complain_on_overflow */
411 bfd_elf_generic_reloc, /* special_function */
412 "R_860_LOGOTOFF2", /* name */
413 true, /* partial_inplace */
414 0xffffffff, /* src_mask */
415 0xffffffff, /* dst_mask */
416 false), /* pcrel_offset */
417
418 HOWTO (R_860_LOGOTOFF3, /* type */
419 0, /* rightshift */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
421 32, /* bitsize */
422 false, /* pc_relative */
423 0, /* bitpos */
424 complain_overflow_dont, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 "R_860_LOGOTOFF3", /* name */
427 true, /* partial_inplace */
428 0xffffffff, /* src_mask */
429 0xffffffff, /* dst_mask */
430 false), /* pcrel_offset */
431
432 HOWTO (R_860_LOPC, /* type */
433 0, /* rightshift */
434 2, /* size (0 = byte, 1 = short, 2 = long) */
435 16, /* bitsize */
436 true, /* pc_relative */
437 0, /* bitpos */
438 complain_overflow_bitfield, /* complain_on_overflow */
439 bfd_elf_generic_reloc, /* special_function */
440 "R_860_LOPC", /* name */
441 false, /* partial_inplace */
442 0xffff, /* src_mask */
443 0xffff, /* dst_mask */
444 true), /* pcrel_offset */
445
446 HOWTO (R_860_HIGHADJ, /* type */
447 0, /* rightshift */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
449 16, /* bitsize */
450 false, /* pc_relative */
451 0, /* bitpos */
452 complain_overflow_dont, /* complain_on_overflow */
453 bfd_elf_generic_reloc, /* special_function */
454 "R_860_HIGHADJ", /* name */
455 false, /* partial_inplace */
456 0xffff, /* src_mask */
457 0xffff, /* dst_mask */
458 false), /* pcrel_offset */
459
460 HOWTO (R_860_HAGOT, /* type */
461 0, /* rightshift */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
463 16, /* bitsize */
464 false, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont, /* complain_on_overflow */
467 bfd_elf_generic_reloc, /* special_function */
468 "R_860_HAGOT", /* name */
469 false, /* partial_inplace */
470 0, /* src_mask */
471 0xffff, /* dst_mask */
472 true), /* pcrel_offset */
473
474 HOWTO (R_860_HAGOTOFF, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 32, /* bitsize */
478 false, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_dont, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_860_HAGOTOFF", /* name */
483 true, /* partial_inplace */
484 0xffffffff, /* src_mask */
485 0xffffffff, /* dst_mask */
486 false), /* pcrel_offset */
487
488 HOWTO (R_860_HAPC, /* type */
489 0, /* rightshift */
490 2, /* size (0 = byte, 1 = short, 2 = long) */
491 16, /* bitsize */
492 true, /* pc_relative */
493 0, /* bitpos */
494 complain_overflow_bitfield, /* complain_on_overflow */
495 bfd_elf_generic_reloc, /* special_function */
496 "R_860_HAPC", /* name */
497 false, /* partial_inplace */
498 0xffff, /* src_mask */
499 0xffff, /* dst_mask */
500 true), /* pcrel_offset */
501
502 HOWTO (R_860_HIGH, /* type */
503 16, /* rightshift */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
505 16, /* bitsize */
506 false, /* pc_relative */
507 0, /* bitpos */
508 complain_overflow_dont, /* complain_on_overflow */
509 bfd_elf_generic_reloc, /* special_function */
510 "R_860_HIGH", /* name */
511 false, /* partial_inplace */
512 0xffff, /* src_mask */
513 0xffff, /* dst_mask */
514 false), /* pcrel_offset */
515
516 HOWTO (R_860_HIGOT, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 16, /* bitsize */
520 false, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_dont, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_860_HIGOT", /* name */
525 false, /* partial_inplace */
526 0, /* src_mask */
527 0xffff, /* dst_mask */
528 true), /* pcrel_offset */
529
530 HOWTO (R_860_HIGOTOFF, /* type */
531 0, /* rightshift */
532 2, /* size (0 = byte, 1 = short, 2 = long) */
533 32, /* bitsize */
534 false, /* pc_relative */
535 0, /* bitpos */
536 complain_overflow_dont, /* complain_on_overflow */
537 bfd_elf_generic_reloc, /* special_function */
538 "R_860_HIGOTOFF", /* name */
539 true, /* partial_inplace */
540 0xffffffff, /* src_mask */
541 0xffffffff, /* dst_mask */
542 false), /* pcrel_offset */
543 };
544 \f
545 static unsigned char elf_code_to_howto_index[R_860_max + 1];
546
547 static reloc_howto_type *
548 lookup_howto (rtype)
549 unsigned int rtype;
550 {
551 static int initialized = 0;
552 int i;
553 int howto_tbl_size = (int) (sizeof (elf32_i860_howto_table)
554 / sizeof (elf32_i860_howto_table[0]));
555
556 if (! initialized)
557 {
558 initialized = 1;
559 memset (elf_code_to_howto_index, 0xff,
560 sizeof (elf_code_to_howto_index));
561 for (i = 0; i < howto_tbl_size; i++)
562 elf_code_to_howto_index[elf32_i860_howto_table[i].type] = i;
563 }
564
565 BFD_ASSERT (rtype <= R_860_max);
566 i = elf_code_to_howto_index[rtype];
567 if (i >= howto_tbl_size)
568 return 0;
569 return elf32_i860_howto_table + i;
570 }
571
572 /* Given a BFD reloc, return the matching HOWTO structure. */
573 static reloc_howto_type *
574 elf32_i860_reloc_type_lookup (abfd, code)
575 bfd * abfd ATTRIBUTE_UNUSED;
576 bfd_reloc_code_real_type code;
577 {
578 unsigned int rtype;
579
580 switch (code)
581 {
582 case BFD_RELOC_NONE:
583 rtype = R_860_NONE;
584 break;
585 case BFD_RELOC_32:
586 rtype = R_860_32;
587 break;
588 case BFD_RELOC_860_COPY:
589 rtype = R_860_COPY;
590 break;
591 case BFD_RELOC_860_GLOB_DAT:
592 rtype = R_860_GLOB_DAT;
593 break;
594 case BFD_RELOC_860_JUMP_SLOT:
595 rtype = R_860_JUMP_SLOT;
596 break;
597 case BFD_RELOC_860_RELATIVE:
598 rtype = R_860_RELATIVE;
599 break;
600 case BFD_RELOC_860_PC26:
601 rtype = R_860_PC26;
602 break;
603 case BFD_RELOC_860_PLT26:
604 rtype = R_860_PLT26;
605 break;
606 case BFD_RELOC_860_PC16:
607 rtype = R_860_PC16;
608 break;
609 case BFD_RELOC_860_LOW0:
610 rtype = R_860_LOW0;
611 break;
612 case BFD_RELOC_860_SPLIT0:
613 rtype = R_860_SPLIT0;
614 break;
615 case BFD_RELOC_860_LOW1:
616 rtype = R_860_LOW1;
617 break;
618 case BFD_RELOC_860_SPLIT1:
619 rtype = R_860_SPLIT1;
620 break;
621 case BFD_RELOC_860_LOW2:
622 rtype = R_860_LOW2;
623 break;
624 case BFD_RELOC_860_SPLIT2:
625 rtype = R_860_SPLIT2;
626 break;
627 case BFD_RELOC_860_LOW3:
628 rtype = R_860_LOW3;
629 break;
630 case BFD_RELOC_860_LOGOT0:
631 rtype = R_860_LOGOT0;
632 break;
633 case BFD_RELOC_860_SPGOT0:
634 rtype = R_860_SPGOT0;
635 break;
636 case BFD_RELOC_860_LOGOT1:
637 rtype = R_860_LOGOT1;
638 break;
639 case BFD_RELOC_860_SPGOT1:
640 rtype = R_860_SPGOT1;
641 break;
642 case BFD_RELOC_860_LOGOTOFF0:
643 rtype = R_860_LOGOTOFF0;
644 break;
645 case BFD_RELOC_860_SPGOTOFF0:
646 rtype = R_860_SPGOTOFF0;
647 break;
648 case BFD_RELOC_860_LOGOTOFF1:
649 rtype = R_860_LOGOTOFF1;
650 break;
651 case BFD_RELOC_860_SPGOTOFF1:
652 rtype = R_860_SPGOTOFF1;
653 break;
654 case BFD_RELOC_860_LOGOTOFF2:
655 rtype = R_860_LOGOTOFF2;
656 break;
657 case BFD_RELOC_860_LOGOTOFF3:
658 rtype = R_860_LOGOTOFF3;
659 break;
660 case BFD_RELOC_860_LOPC:
661 rtype = R_860_LOPC;
662 break;
663 case BFD_RELOC_860_HIGHADJ:
664 rtype = R_860_HIGHADJ;
665 break;
666 case BFD_RELOC_860_HAGOT:
667 rtype = R_860_HAGOT;
668 break;
669 case BFD_RELOC_860_HAGOTOFF:
670 rtype = R_860_HAGOTOFF;
671 break;
672 case BFD_RELOC_860_HAPC:
673 rtype = R_860_HAPC;
674 break;
675 case BFD_RELOC_860_HIGH:
676 rtype = R_860_HIGH;
677 break;
678 case BFD_RELOC_860_HIGOT:
679 rtype = R_860_HIGOT;
680 break;
681 case BFD_RELOC_860_HIGOTOFF:
682 rtype = R_860_HIGOTOFF;
683 break;
684 default:
685 rtype = 0;
686 break;
687 }
688 return lookup_howto (rtype);
689 }
690
691 /* Given a ELF reloc, return the matching HOWTO structure. */
692 static void
693 elf32_i860_info_to_howto_rela (abfd, bfd_reloc, elf_reloc)
694 bfd *abfd ATTRIBUTE_UNUSED;
695 arelent *bfd_reloc;
696 Elf64_Internal_Rela *elf_reloc;
697 {
698 bfd_reloc->howto = lookup_howto (ELF32_R_TYPE (elf_reloc->r_info));
699 }
700 \f
701 /* Specialized relocation handler for R_860_SPLITn. These relocations
702 involves a 16-bit field that is split into two contiguous parts. */
703 static bfd_reloc_status_type
704 elf32_i860_relocate_splitn (input_bfd, rello, contents, value)
705 bfd *input_bfd;
706 Elf_Internal_Rela *rello;
707 bfd_byte *contents;
708 bfd_vma value;
709 {
710 bfd_vma insn;
711 reloc_howto_type *howto;
712 howto = lookup_howto (ELF32_R_TYPE (rello->r_info));
713 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
714
715 /* Relocate. */
716 value += rello->r_addend;
717
718 /* Separate the fields and insert. */
719 value = (((value & 0xf8) << 5) | (value & 0x7ff)) & howto->dst_mask;
720 insn = (insn & ~howto->dst_mask) | value;
721
722 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
723 return bfd_reloc_ok;
724 }
725
726 /* Specialized relocation handler for R_860_PC16. This relocation
727 involves a 16-bit, PC-relative field that is split into two contiguous
728 parts. */
729 static bfd_reloc_status_type
730 elf32_i860_relocate_pc16 (input_bfd, input_section, rello, contents, value)
731 bfd *input_bfd;
732 asection *input_section;
733 Elf_Internal_Rela *rello;
734 bfd_byte *contents;
735 bfd_vma value;
736 {
737 bfd_vma insn;
738 reloc_howto_type *howto;
739 howto = lookup_howto (ELF32_R_TYPE (rello->r_info));
740 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
741
742 /* Adjust for PC-relative relocation. */
743 value -= (input_section->output_section->vma
744 + input_section->output_offset);
745 value -= rello->r_offset;
746
747 /* Relocate. */
748 value += rello->r_addend;
749
750 /* Separate the fields and insert. */
751 value = (((value & 0xf8) << 5) | (value & 0x7ff)) & howto->dst_mask;
752 insn = (insn & ~howto->dst_mask) | value;
753
754 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
755 return bfd_reloc_ok;
756
757 }
758
759 /* Specialized relocation handler for R_860_PC26. This relocation
760 involves a 26-bit, PC-relative field which must be adjusted by 4. */
761 static bfd_reloc_status_type
762 elf32_i860_relocate_pc26 (input_bfd, input_section, rello, contents, value)
763 bfd *input_bfd;
764 asection *input_section;
765 Elf_Internal_Rela *rello;
766 bfd_byte *contents;
767 bfd_vma value;
768 {
769 bfd_vma insn;
770 reloc_howto_type *howto;
771 howto = lookup_howto (ELF32_R_TYPE (rello->r_info));
772 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
773
774 /* Adjust for PC-relative relocation. */
775 value -= (input_section->output_section->vma
776 + input_section->output_offset);
777 value -= rello->r_offset;
778
779 /* Relocate. */
780 value += rello->r_addend;
781
782 /* Adjust value by 4 and insert the field. */
783 value = ((value - 4) >> howto->rightshift) & howto->dst_mask;
784 insn = (insn & ~howto->dst_mask) | value;
785
786 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
787 return bfd_reloc_ok;
788
789 }
790
791 /* Specialized relocation handler for R_860_HIGHADJ. */
792 static bfd_reloc_status_type
793 elf32_i860_relocate_highadj (input_bfd, rel, contents, value)
794 bfd *input_bfd;
795 Elf_Internal_Rela *rel;
796 bfd_byte *contents;
797 bfd_vma value;
798 {
799 bfd_vma insn;
800
801 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
802
803 value += ((rel->r_addend & 0x8000) << 1);
804 value += rel->r_addend;
805 value = ((value >> 16) & 0xffff);
806
807 insn = (insn & 0xffff0000) | value;
808
809 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
810 return bfd_reloc_ok;
811 }
812
813 /* Perform a single relocation. By default we use the standard BFD
814 routines. However, we handle some specially. */
815 static bfd_reloc_status_type
816 i860_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation)
817 reloc_howto_type * howto;
818 bfd * input_bfd;
819 asection * input_section;
820 bfd_byte * contents;
821 Elf_Internal_Rela * rel;
822 bfd_vma relocation;
823 {
824 return _bfd_final_link_relocate (howto, input_bfd, input_section,
825 contents, rel->r_offset, relocation,
826 rel->r_addend);
827 }
828
829 /* Relocate an i860 ELF section.
830
831 This is boiler-plate code copied from fr30.
832 There is some attempt to make this function usable for many architectures,
833 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
834 if only to serve as a learning tool.
835
836 The RELOCATE_SECTION function is called by the new ELF backend linker
837 to handle the relocations for a section.
838
839 The relocs are always passed as Rela structures; if the section
840 actually uses Rel structures, the r_addend field will always be
841 zero.
842
843 This function is responsible for adjusting the section contents as
844 necessary, and (if using Rela relocs and generating a relocateable
845 output file) adjusting the reloc addend as necessary.
846
847 This function does not have to worry about setting the reloc
848 address or the reloc symbol index.
849
850 LOCAL_SYMS is a pointer to the swapped in local symbols.
851
852 LOCAL_SECTIONS is an array giving the section in the input file
853 corresponding to the st_shndx field of each local symbol.
854
855 The global hash table entry for the global symbols can be found
856 via elf_sym_hashes (input_bfd).
857
858 When generating relocateable output, this function must handle
859 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
860 going to be the section symbol corresponding to the output
861 section, which means that the addend must be adjusted
862 accordingly. */
863 static boolean
864 elf32_i860_relocate_section (output_bfd, info, input_bfd, input_section,
865 contents, relocs, local_syms, local_sections)
866 bfd * output_bfd ATTRIBUTE_UNUSED;
867 struct bfd_link_info * info;
868 bfd * input_bfd;
869 asection * input_section;
870 bfd_byte * contents;
871 Elf_Internal_Rela * relocs;
872 Elf_Internal_Sym * local_syms;
873 asection ** local_sections;
874 {
875 Elf_Internal_Shdr * symtab_hdr;
876 struct elf_link_hash_entry ** sym_hashes;
877 Elf_Internal_Rela * rel;
878 Elf_Internal_Rela * relend;
879
880 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
881 sym_hashes = elf_sym_hashes (input_bfd);
882 relend = relocs + input_section->reloc_count;
883
884 for (rel = relocs; rel < relend; rel ++)
885 {
886 reloc_howto_type * howto;
887 unsigned long r_symndx;
888 Elf_Internal_Sym * sym;
889 asection * sec;
890 struct elf_link_hash_entry * h;
891 bfd_vma relocation;
892 bfd_reloc_status_type r;
893 const char * name = NULL;
894 int r_type;
895
896 r_type = ELF32_R_TYPE (rel->r_info);
897
898 #if 0
899 if ( r_type == R_860_GNU_VTINHERIT
900 || r_type == R_860_GNU_VTENTRY)
901 continue;
902 #endif
903
904 r_symndx = ELF32_R_SYM (rel->r_info);
905
906 if (info->relocateable)
907 {
908 /* This is a relocateable link. We don't have to change
909 anything, unless the reloc is against a section symbol,
910 in which case we have to adjust according to where the
911 section symbol winds up in the output section. */
912 if (r_symndx < symtab_hdr->sh_info)
913 {
914 sym = local_syms + r_symndx;
915
916 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
917 {
918 sec = local_sections [r_symndx];
919 rel->r_addend += sec->output_offset + sym->st_value;
920 }
921 }
922
923 continue;
924 }
925
926 /* This is a final link. */
927 howto = lookup_howto (ELF32_R_TYPE (rel->r_info));
928 h = NULL;
929 sym = NULL;
930 sec = NULL;
931
932 if (r_symndx < symtab_hdr->sh_info)
933 {
934 sym = local_syms + r_symndx;
935 sec = local_sections [r_symndx];
936 relocation = (sec->output_section->vma
937 + sec->output_offset
938 + sym->st_value);
939
940 name = bfd_elf_string_from_elf_section
941 (input_bfd, symtab_hdr->sh_link, sym->st_name);
942 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
943 }
944 else
945 {
946 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
947
948 while (h->root.type == bfd_link_hash_indirect
949 || h->root.type == bfd_link_hash_warning)
950 h = (struct elf_link_hash_entry *) h->root.u.i.link;
951
952 name = h->root.root.string;
953
954 if (h->root.type == bfd_link_hash_defined
955 || h->root.type == bfd_link_hash_defweak)
956 {
957 sec = h->root.u.def.section;
958 relocation = (h->root.u.def.value
959 + sec->output_section->vma
960 + sec->output_offset);
961 }
962 else if (h->root.type == bfd_link_hash_undefweak)
963 {
964 relocation = 0;
965 }
966 else
967 {
968 if (! ((*info->callbacks->undefined_symbol)
969 (info, h->root.root.string, input_bfd,
970 input_section, rel->r_offset, true)))
971 return false;
972 relocation = 0;
973 }
974 }
975
976 switch (r_type)
977 {
978 default:
979 r = i860_final_link_relocate (howto, input_bfd, input_section,
980 contents, rel, relocation);
981 break;
982
983 case R_860_HIGHADJ:
984 r = elf32_i860_relocate_highadj (input_bfd, rel, contents,
985 relocation);
986 break;
987
988 case R_860_PC16:
989 r = elf32_i860_relocate_pc16 (input_bfd, input_section, rel,
990 contents, relocation);
991 break;
992
993 case R_860_PC26:
994 r = elf32_i860_relocate_pc26 (input_bfd, input_section, rel,
995 contents, relocation);
996 break;
997
998 case R_860_SPLIT0:
999 case R_860_SPLIT1:
1000 case R_860_SPLIT2:
1001 r = elf32_i860_relocate_splitn (input_bfd, rel, contents,
1002 relocation);
1003 break;
1004
1005 /* We do not yet handle GOT/PLT/Dynamic relocations. */
1006 case R_860_COPY:
1007 case R_860_GLOB_DAT:
1008 case R_860_JUMP_SLOT:
1009 case R_860_RELATIVE:
1010 case R_860_PLT26:
1011 case R_860_LOGOT0:
1012 case R_860_SPGOT0:
1013 case R_860_LOGOT1:
1014 case R_860_SPGOT1:
1015 case R_860_LOGOTOFF0:
1016 case R_860_SPGOTOFF0:
1017 case R_860_LOGOTOFF1:
1018 case R_860_SPGOTOFF1:
1019 case R_860_LOGOTOFF2:
1020 case R_860_LOGOTOFF3:
1021 case R_860_LOPC:
1022 case R_860_HAGOT:
1023 case R_860_HAGOTOFF:
1024 case R_860_HAPC:
1025 case R_860_HIGOT:
1026 case R_860_HIGOTOFF:
1027 r = bfd_reloc_notsupported;
1028 break;
1029 }
1030
1031 if (r != bfd_reloc_ok)
1032 {
1033 const char * msg = (const char *) NULL;
1034
1035 switch (r)
1036 {
1037 case bfd_reloc_overflow:
1038 r = info->callbacks->reloc_overflow
1039 (info, name, howto->name, (bfd_vma) 0,
1040 input_bfd, input_section, rel->r_offset);
1041 break;
1042
1043 case bfd_reloc_undefined:
1044 r = info->callbacks->undefined_symbol
1045 (info, name, input_bfd, input_section, rel->r_offset, true);
1046 break;
1047
1048 case bfd_reloc_outofrange:
1049 msg = _("internal error: out of range error");
1050 break;
1051
1052 case bfd_reloc_notsupported:
1053 msg = _("internal error: unsupported relocation error");
1054 break;
1055
1056 case bfd_reloc_dangerous:
1057 msg = _("internal error: dangerous relocation");
1058 break;
1059
1060 default:
1061 msg = _("internal error: unknown error");
1062 break;
1063 }
1064
1065 if (msg)
1066 r = info->callbacks->warning
1067 (info, msg, name, input_bfd, input_section, rel->r_offset);
1068
1069 if (! r)
1070 return false;
1071 }
1072 }
1073
1074 return true;
1075 }
1076
1077 /* Return whether a symbol name implies a local label. SVR4/860 compilers
1078 generate labels of the form ".ep.function_name" to denote the end of a
1079 function prolog. These should be local.
1080 ??? Do any other SVR4 compilers have this convention? If so, this should
1081 be added to the generic routine. */
1082 static boolean
1083 elf32_i860_is_local_label_name (abfd, name)
1084 bfd *abfd;
1085 const char *name;
1086 {
1087 if (name[0] == '.' && name[1] == 'e' && name[2] == 'p' && name[3] == '.')
1088 return true;
1089
1090 return _bfd_elf_is_local_label_name (abfd, name);
1091 }
1092 \f
1093 #define TARGET_BIG_SYM bfd_elf32_i860_vec
1094 #define TARGET_BIG_NAME "elf32-i860"
1095 #define TARGET_LITTLE_SYM bfd_elf32_i860_little_vec
1096 #define TARGET_LITTLE_NAME "elf32-i860-little"
1097 #define ELF_ARCH bfd_arch_i860
1098 #define ELF_MACHINE_CODE EM_860
1099 #define ELF_MAXPAGESIZE 4096
1100
1101 #define elf_info_to_howto_rel NULL
1102 #define elf_info_to_howto elf32_i860_info_to_howto_rela
1103 #define elf_backend_relocate_section elf32_i860_relocate_section
1104 #define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup
1105 #define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name
1106
1107 #include "elf32-target.h"
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