Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for ARM COFF files. |
82704155 | 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
d21356d8 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
d21356d8 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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
d21356d8 | 10 | (at your option) any later version. |
252b5132 | 11 | |
d21356d8 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 | |
d21356d8 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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 | 24 | #include "libbfd.h" |
252b5132 | 25 | #include "coff/arm.h" |
252b5132 | 26 | #include "coff/internal.h" |
f37164d7 AM |
27 | #include "cpu-arm.h" |
28 | #include "coff-arm.h" | |
252b5132 RH |
29 | |
30 | #ifdef COFF_WITH_PE | |
31 | #include "coff/pe.h" | |
32 | #endif | |
33 | ||
34 | #include "libcoff.h" | |
35 | ||
36 | /* Macros for manipulation the bits in the flags field of the coff data | |
37 | structure. */ | |
dc810e39 AM |
38 | #define APCS_26_FLAG(abfd) \ |
39 | (coff_data (abfd)->flags & F_APCS_26) | |
40 | ||
41 | #define APCS_FLOAT_FLAG(abfd) \ | |
42 | (coff_data (abfd)->flags & F_APCS_FLOAT) | |
43 | ||
44 | #define PIC_FLAG(abfd) \ | |
45 | (coff_data (abfd)->flags & F_PIC) | |
46 | ||
47 | #define APCS_SET(abfd) \ | |
48 | (coff_data (abfd)->flags & F_APCS_SET) | |
49 | ||
50 | #define SET_APCS_FLAGS(abfd, flgs) \ | |
51 | do \ | |
52 | { \ | |
53 | coff_data (abfd)->flags &= ~(F_APCS_26 | F_APCS_FLOAT | F_PIC); \ | |
54 | coff_data (abfd)->flags |= (flgs) | F_APCS_SET; \ | |
55 | } \ | |
56 | while (0) | |
57 | ||
58 | #define INTERWORK_FLAG(abfd) \ | |
59 | (coff_data (abfd)->flags & F_INTERWORK) | |
60 | ||
61 | #define INTERWORK_SET(abfd) \ | |
62 | (coff_data (abfd)->flags & F_INTERWORK_SET) | |
63 | ||
64 | #define SET_INTERWORK_FLAG(abfd, flg) \ | |
65 | do \ | |
66 | { \ | |
67 | coff_data (abfd)->flags &= ~F_INTERWORK; \ | |
68 | coff_data (abfd)->flags |= (flg) | F_INTERWORK_SET; \ | |
69 | } \ | |
70 | while (0) | |
af74ae99 NC |
71 | |
72 | #ifndef NUM_ELEM | |
73 | #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0])) | |
74 | #endif | |
d70910e8 | 75 | |
252b5132 | 76 | typedef enum {bunknown, b9, b12, b23} thumb_pcrel_branchtype; |
c8e7bf0d | 77 | /* Some typedefs for holding instructions. */ |
252b5132 RH |
78 | typedef unsigned long int insn32; |
79 | typedef unsigned short int insn16; | |
80 | ||
252b5132 RH |
81 | /* The linker script knows the section names for placement. |
82 | The entry_names are used to do simple name mangling on the stubs. | |
83 | Given a function name, and its type, the stub can be found. The | |
917583ad | 84 | name can be changed. The only requirement is the %s be present. */ |
d70910e8 | 85 | |
252b5132 RH |
86 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
87 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
88 | ||
89 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
90 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
91 | ||
d70910e8 | 92 | /* Used by the assembler. */ |
917583ad | 93 | |
252b5132 | 94 | static bfd_reloc_status_type |
c8e7bf0d NC |
95 | coff_arm_reloc (bfd *abfd, |
96 | arelent *reloc_entry, | |
97 | asymbol *symbol ATTRIBUTE_UNUSED, | |
98 | void * data, | |
99 | asection *input_section ATTRIBUTE_UNUSED, | |
100 | bfd *output_bfd, | |
101 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
102 | { |
103 | symvalue diff; | |
c8e7bf0d NC |
104 | |
105 | if (output_bfd == NULL) | |
252b5132 RH |
106 | return bfd_reloc_continue; |
107 | ||
108 | diff = reloc_entry->addend; | |
109 | ||
dc810e39 AM |
110 | #define DOIT(x) \ |
111 | x = ((x & ~howto->dst_mask) \ | |
112 | | (((x & howto->src_mask) + diff) & howto->dst_mask)) | |
252b5132 | 113 | |
b23dc97f NC |
114 | if (diff != 0) |
115 | { | |
116 | reloc_howto_type *howto = reloc_entry->howto; | |
117 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; | |
118 | ||
119 | if (! bfd_reloc_offset_in_range (howto, abfd, input_section, | |
120 | reloc_entry->address | |
121 | * bfd_octets_per_byte (abfd))) | |
122 | return bfd_reloc_outofrange; | |
123 | ||
124 | switch (howto->size) | |
125 | { | |
126 | case 0: | |
127 | { | |
128 | char x = bfd_get_8 (abfd, addr); | |
129 | DOIT (x); | |
130 | bfd_put_8 (abfd, x, addr); | |
131 | } | |
132 | break; | |
133 | ||
134 | case 1: | |
135 | { | |
136 | short x = bfd_get_16 (abfd, addr); | |
137 | DOIT (x); | |
138 | bfd_put_16 (abfd, (bfd_vma) x, addr); | |
139 | } | |
140 | break; | |
252b5132 | 141 | |
b23dc97f | 142 | case 2: |
252b5132 | 143 | { |
b23dc97f NC |
144 | long x = bfd_get_32 (abfd, addr); |
145 | DOIT (x); | |
146 | bfd_put_32 (abfd, (bfd_vma) x, addr); | |
252b5132 | 147 | } |
b23dc97f NC |
148 | break; |
149 | ||
150 | default: | |
151 | abort (); | |
152 | } | |
153 | } | |
252b5132 RH |
154 | |
155 | /* Now let bfd_perform_relocation finish everything up. */ | |
156 | return bfd_reloc_continue; | |
157 | } | |
158 | ||
159 | /* If USER_LABEL_PREFIX is defined as "_" (see coff_arm_is_local_label_name() | |
160 | in this file), then TARGET_UNDERSCORE should be defined, otherwise it | |
161 | should not. */ | |
162 | #ifndef TARGET_UNDERSCORE | |
163 | #define TARGET_UNDERSCORE '_' | |
164 | #endif | |
165 | ||
166 | #ifndef PCRELOFFSET | |
b34976b6 | 167 | #define PCRELOFFSET TRUE |
252b5132 RH |
168 | #endif |
169 | ||
170 | /* These most certainly belong somewhere else. Just had to get rid of | |
17505c5c | 171 | the manifest constants in the code. */ |
7148cc28 NC |
172 | |
173 | #ifdef ARM_WINCE | |
174 | ||
175 | #define ARM_26D 0 | |
176 | #define ARM_32 1 | |
177 | #define ARM_RVA32 2 | |
178 | #define ARM_26 3 | |
179 | #define ARM_THUMB12 4 | |
180 | #define ARM_SECTION 14 | |
181 | #define ARM_SECREL 15 | |
182 | ||
183 | #else | |
184 | ||
07d6d2b8 AM |
185 | #define ARM_8 0 |
186 | #define ARM_16 1 | |
187 | #define ARM_32 2 | |
188 | #define ARM_26 3 | |
252b5132 RH |
189 | #define ARM_DISP8 4 |
190 | #define ARM_DISP16 5 | |
191 | #define ARM_DISP32 6 | |
07d6d2b8 | 192 | #define ARM_26D 7 |
c8e7bf0d | 193 | /* 8 is unused. */ |
252b5132 RH |
194 | #define ARM_NEG16 9 |
195 | #define ARM_NEG32 10 | |
196 | #define ARM_RVA32 11 | |
197 | #define ARM_THUMB9 12 | |
198 | #define ARM_THUMB12 13 | |
199 | #define ARM_THUMB23 14 | |
200 | ||
17505c5c NC |
201 | #endif |
202 | ||
c8e7bf0d NC |
203 | static bfd_reloc_status_type aoutarm_fix_pcrel_26_done |
204 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
205 | static bfd_reloc_status_type aoutarm_fix_pcrel_26 | |
206 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
c8e7bf0d NC |
207 | static bfd_reloc_status_type coff_thumb_pcrel_12 |
208 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
209 | #ifndef ARM_WINCE | |
afe94956 NC |
210 | static bfd_reloc_status_type coff_thumb_pcrel_9 |
211 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
c8e7bf0d NC |
212 | static bfd_reloc_status_type coff_thumb_pcrel_23 |
213 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
214 | #endif | |
215 | ||
d70910e8 | 216 | static reloc_howto_type aoutarm_std_reloc_howto[] = |
917583ad | 217 | { |
17505c5c | 218 | #ifdef ARM_WINCE |
d3793eaa NC |
219 | HOWTO (ARM_26D, |
220 | 2, | |
221 | 2, | |
222 | 24, | |
44e88952 | 223 | TRUE, |
d3793eaa NC |
224 | 0, |
225 | complain_overflow_dont, | |
226 | aoutarm_fix_pcrel_26_done, | |
227 | "ARM_26D", | |
07d6d2b8 | 228 | TRUE, /* partial_inplace. */ |
d3793eaa NC |
229 | 0x00ffffff, |
230 | 0x0, | |
44e88952 | 231 | PCRELOFFSET), |
917583ad NC |
232 | HOWTO (ARM_32, |
233 | 0, | |
234 | 2, | |
235 | 32, | |
b34976b6 | 236 | FALSE, |
917583ad NC |
237 | 0, |
238 | complain_overflow_bitfield, | |
239 | coff_arm_reloc, | |
240 | "ARM_32", | |
07d6d2b8 | 241 | TRUE, /* partial_inplace. */ |
917583ad NC |
242 | 0xffffffff, |
243 | 0xffffffff, | |
244 | PCRELOFFSET), | |
245 | HOWTO (ARM_RVA32, | |
246 | 0, | |
247 | 2, | |
248 | 32, | |
b34976b6 | 249 | FALSE, |
917583ad NC |
250 | 0, |
251 | complain_overflow_bitfield, | |
252 | coff_arm_reloc, | |
253 | "ARM_RVA32", | |
07d6d2b8 | 254 | TRUE, /* partial_inplace. */ |
917583ad NC |
255 | 0xffffffff, |
256 | 0xffffffff, | |
257 | PCRELOFFSET), | |
258 | HOWTO (ARM_26, | |
259 | 2, | |
260 | 2, | |
261 | 24, | |
b34976b6 | 262 | TRUE, |
917583ad NC |
263 | 0, |
264 | complain_overflow_signed, | |
265 | aoutarm_fix_pcrel_26 , | |
266 | "ARM_26", | |
b34976b6 | 267 | FALSE, |
917583ad NC |
268 | 0x00ffffff, |
269 | 0x00ffffff, | |
270 | PCRELOFFSET), | |
271 | HOWTO (ARM_THUMB12, | |
272 | 1, | |
273 | 1, | |
274 | 11, | |
b34976b6 | 275 | TRUE, |
917583ad NC |
276 | 0, |
277 | complain_overflow_signed, | |
278 | coff_thumb_pcrel_12 , | |
279 | "ARM_THUMB12", | |
b34976b6 | 280 | FALSE, |
917583ad NC |
281 | 0x000007ff, |
282 | 0x000007ff, | |
283 | PCRELOFFSET), | |
d3793eaa | 284 | EMPTY_HOWTO (-1), |
917583ad NC |
285 | EMPTY_HOWTO (-1), |
286 | EMPTY_HOWTO (-1), | |
287 | EMPTY_HOWTO (-1), | |
288 | EMPTY_HOWTO (-1), | |
289 | EMPTY_HOWTO (-1), | |
290 | EMPTY_HOWTO (-1), | |
291 | EMPTY_HOWTO (-1), | |
292 | EMPTY_HOWTO (-1), | |
293 | HOWTO (ARM_SECTION, | |
294 | 0, | |
295 | 1, | |
296 | 16, | |
b34976b6 | 297 | FALSE, |
917583ad NC |
298 | 0, |
299 | complain_overflow_bitfield, | |
300 | coff_arm_reloc, | |
d3793eaa | 301 | "ARM_SECTION", |
07d6d2b8 | 302 | TRUE, /* partial_inplace. */ |
917583ad NC |
303 | 0x0000ffff, |
304 | 0x0000ffff, | |
305 | PCRELOFFSET), | |
306 | HOWTO (ARM_SECREL, | |
307 | 0, | |
308 | 2, | |
309 | 32, | |
b34976b6 | 310 | FALSE, |
917583ad NC |
311 | 0, |
312 | complain_overflow_bitfield, | |
313 | coff_arm_reloc, | |
d3793eaa | 314 | "ARM_SECREL", |
07d6d2b8 | 315 | TRUE, /* partial_inplace. */ |
917583ad NC |
316 | 0xffffffff, |
317 | 0xffffffff, | |
318 | PCRELOFFSET), | |
17505c5c | 319 | #else /* not ARM_WINCE */ |
c8e7bf0d NC |
320 | HOWTO (ARM_8, |
321 | 0, | |
322 | 0, | |
323 | 8, | |
324 | FALSE, | |
325 | 0, | |
326 | complain_overflow_bitfield, | |
327 | coff_arm_reloc, | |
328 | "ARM_8", | |
329 | TRUE, | |
330 | 0x000000ff, | |
331 | 0x000000ff, | |
332 | PCRELOFFSET), | |
917583ad NC |
333 | HOWTO (ARM_16, |
334 | 0, | |
335 | 1, | |
336 | 16, | |
b34976b6 | 337 | FALSE, |
917583ad NC |
338 | 0, |
339 | complain_overflow_bitfield, | |
340 | coff_arm_reloc, | |
341 | "ARM_16", | |
b34976b6 | 342 | TRUE, |
917583ad NC |
343 | 0x0000ffff, |
344 | 0x0000ffff, | |
345 | PCRELOFFSET), | |
346 | HOWTO (ARM_32, | |
347 | 0, | |
348 | 2, | |
349 | 32, | |
b34976b6 | 350 | FALSE, |
917583ad NC |
351 | 0, |
352 | complain_overflow_bitfield, | |
353 | coff_arm_reloc, | |
354 | "ARM_32", | |
b34976b6 | 355 | TRUE, |
917583ad NC |
356 | 0xffffffff, |
357 | 0xffffffff, | |
358 | PCRELOFFSET), | |
359 | HOWTO (ARM_26, | |
360 | 2, | |
361 | 2, | |
362 | 24, | |
b34976b6 | 363 | TRUE, |
917583ad NC |
364 | 0, |
365 | complain_overflow_signed, | |
366 | aoutarm_fix_pcrel_26 , | |
367 | "ARM_26", | |
b34976b6 | 368 | FALSE, |
917583ad NC |
369 | 0x00ffffff, |
370 | 0x00ffffff, | |
371 | PCRELOFFSET), | |
372 | HOWTO (ARM_DISP8, | |
373 | 0, | |
374 | 0, | |
375 | 8, | |
b34976b6 | 376 | TRUE, |
917583ad NC |
377 | 0, |
378 | complain_overflow_signed, | |
379 | coff_arm_reloc, | |
380 | "ARM_DISP8", | |
b34976b6 | 381 | TRUE, |
917583ad NC |
382 | 0x000000ff, |
383 | 0x000000ff, | |
b34976b6 | 384 | TRUE), |
917583ad NC |
385 | HOWTO (ARM_DISP16, |
386 | 0, | |
387 | 1, | |
388 | 16, | |
b34976b6 | 389 | TRUE, |
917583ad NC |
390 | 0, |
391 | complain_overflow_signed, | |
392 | coff_arm_reloc, | |
393 | "ARM_DISP16", | |
b34976b6 | 394 | TRUE, |
917583ad NC |
395 | 0x0000ffff, |
396 | 0x0000ffff, | |
b34976b6 | 397 | TRUE), |
917583ad NC |
398 | HOWTO (ARM_DISP32, |
399 | 0, | |
400 | 2, | |
401 | 32, | |
b34976b6 | 402 | TRUE, |
917583ad NC |
403 | 0, |
404 | complain_overflow_signed, | |
405 | coff_arm_reloc, | |
406 | "ARM_DISP32", | |
b34976b6 | 407 | TRUE, |
917583ad NC |
408 | 0xffffffff, |
409 | 0xffffffff, | |
b34976b6 | 410 | TRUE), |
917583ad NC |
411 | HOWTO (ARM_26D, |
412 | 2, | |
413 | 2, | |
414 | 24, | |
b34976b6 | 415 | FALSE, |
917583ad NC |
416 | 0, |
417 | complain_overflow_dont, | |
418 | aoutarm_fix_pcrel_26_done, | |
419 | "ARM_26D", | |
b34976b6 | 420 | TRUE, |
917583ad NC |
421 | 0x00ffffff, |
422 | 0x0, | |
b34976b6 | 423 | FALSE), |
917583ad NC |
424 | /* 8 is unused */ |
425 | EMPTY_HOWTO (-1), | |
426 | HOWTO (ARM_NEG16, | |
427 | 0, | |
428 | -1, | |
429 | 16, | |
b34976b6 | 430 | FALSE, |
917583ad NC |
431 | 0, |
432 | complain_overflow_bitfield, | |
433 | coff_arm_reloc, | |
434 | "ARM_NEG16", | |
b34976b6 | 435 | TRUE, |
917583ad NC |
436 | 0x0000ffff, |
437 | 0x0000ffff, | |
b34976b6 | 438 | FALSE), |
917583ad NC |
439 | HOWTO (ARM_NEG32, |
440 | 0, | |
441 | -2, | |
442 | 32, | |
b34976b6 | 443 | FALSE, |
917583ad NC |
444 | 0, |
445 | complain_overflow_bitfield, | |
446 | coff_arm_reloc, | |
447 | "ARM_NEG32", | |
b34976b6 | 448 | TRUE, |
917583ad NC |
449 | 0xffffffff, |
450 | 0xffffffff, | |
b34976b6 | 451 | FALSE), |
917583ad NC |
452 | HOWTO (ARM_RVA32, |
453 | 0, | |
454 | 2, | |
455 | 32, | |
b34976b6 | 456 | FALSE, |
917583ad NC |
457 | 0, |
458 | complain_overflow_bitfield, | |
459 | coff_arm_reloc, | |
460 | "ARM_RVA32", | |
b34976b6 | 461 | TRUE, |
917583ad NC |
462 | 0xffffffff, |
463 | 0xffffffff, | |
464 | PCRELOFFSET), | |
465 | HOWTO (ARM_THUMB9, | |
466 | 1, | |
467 | 1, | |
468 | 8, | |
b34976b6 | 469 | TRUE, |
917583ad NC |
470 | 0, |
471 | complain_overflow_signed, | |
472 | coff_thumb_pcrel_9 , | |
473 | "ARM_THUMB9", | |
b34976b6 | 474 | FALSE, |
917583ad NC |
475 | 0x000000ff, |
476 | 0x000000ff, | |
477 | PCRELOFFSET), | |
478 | HOWTO (ARM_THUMB12, | |
479 | 1, | |
480 | 1, | |
481 | 11, | |
b34976b6 | 482 | TRUE, |
917583ad NC |
483 | 0, |
484 | complain_overflow_signed, | |
485 | coff_thumb_pcrel_12 , | |
486 | "ARM_THUMB12", | |
b34976b6 | 487 | FALSE, |
917583ad NC |
488 | 0x000007ff, |
489 | 0x000007ff, | |
490 | PCRELOFFSET), | |
491 | HOWTO (ARM_THUMB23, | |
492 | 1, | |
493 | 2, | |
494 | 22, | |
b34976b6 | 495 | TRUE, |
917583ad NC |
496 | 0, |
497 | complain_overflow_signed, | |
498 | coff_thumb_pcrel_23 , | |
499 | "ARM_THUMB23", | |
b34976b6 | 500 | FALSE, |
917583ad NC |
501 | 0x07ff07ff, |
502 | 0x07ff07ff, | |
503 | PCRELOFFSET) | |
17505c5c | 504 | #endif /* not ARM_WINCE */ |
917583ad | 505 | }; |
252b5132 | 506 | |
af74ae99 NC |
507 | #define NUM_RELOCS NUM_ELEM (aoutarm_std_reloc_howto) |
508 | ||
252b5132 | 509 | #ifdef COFF_WITH_PE |
b34976b6 | 510 | /* Return TRUE if this relocation should |
d70910e8 | 511 | appear in the output .reloc section. */ |
252b5132 | 512 | |
b34976b6 | 513 | static bfd_boolean |
c8e7bf0d NC |
514 | in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, |
515 | reloc_howto_type * howto) | |
252b5132 RH |
516 | { |
517 | return !howto->pc_relative && howto->type != ARM_RVA32; | |
d70910e8 | 518 | } |
252b5132 RH |
519 | #endif |
520 | ||
af74ae99 NC |
521 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
522 | (cache_ptr)->howto = \ | |
523 | (dst)->r_type < NUM_RELOCS \ | |
524 | ? aoutarm_std_reloc_howto + (dst)->r_type \ | |
525 | : NULL | |
252b5132 RH |
526 | |
527 | #define coff_rtype_to_howto coff_arm_rtype_to_howto | |
528 | ||
529 | static reloc_howto_type * | |
c8e7bf0d NC |
530 | coff_arm_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
531 | asection *sec, | |
532 | struct internal_reloc *rel, | |
533 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED, | |
534 | struct internal_syment *sym ATTRIBUTE_UNUSED, | |
535 | bfd_vma *addendp) | |
252b5132 | 536 | { |
af74ae99 | 537 | reloc_howto_type * howto; |
252b5132 | 538 | |
af74ae99 NC |
539 | if (rel->r_type >= NUM_RELOCS) |
540 | return NULL; | |
d70910e8 | 541 | |
252b5132 RH |
542 | howto = aoutarm_std_reloc_howto + rel->r_type; |
543 | ||
544 | if (rel->r_type == ARM_RVA32) | |
17505c5c | 545 | *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
252b5132 | 546 | |
0be038d6 | 547 | #if defined COFF_WITH_PE && defined ARM_WINCE |
f0927246 NC |
548 | if (rel->r_type == ARM_SECREL) |
549 | { | |
550 | bfd_vma osect_vma; | |
551 | ||
552 | if (h && (h->type == bfd_link_hash_defined | |
553 | || h->type == bfd_link_hash_defweak)) | |
554 | osect_vma = h->root.u.def.section->output_section->vma; | |
555 | else | |
556 | { | |
f0927246 NC |
557 | int i; |
558 | ||
559 | /* Sigh, the only way to get the section to offset against | |
560 | is to find it the hard way. */ | |
561 | ||
562 | for (sec = abfd->sections, i = 1; i < sym->n_scnum; i++) | |
563 | sec = sec->next; | |
564 | ||
565 | osect_vma = sec->output_section->vma; | |
566 | } | |
567 | ||
568 | *addendp -= osect_vma; | |
569 | } | |
570 | #endif | |
571 | ||
252b5132 | 572 | return howto; |
252b5132 | 573 | } |
917583ad | 574 | |
d70910e8 | 575 | /* Used by the assembler. */ |
252b5132 RH |
576 | |
577 | static bfd_reloc_status_type | |
c8e7bf0d NC |
578 | aoutarm_fix_pcrel_26_done (bfd *abfd ATTRIBUTE_UNUSED, |
579 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
580 | asymbol *symbol ATTRIBUTE_UNUSED, | |
581 | void * data ATTRIBUTE_UNUSED, | |
582 | asection *input_section ATTRIBUTE_UNUSED, | |
583 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
584 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
585 | { |
586 | /* This is dead simple at present. */ | |
587 | return bfd_reloc_ok; | |
588 | } | |
589 | ||
d70910e8 | 590 | /* Used by the assembler. */ |
252b5132 RH |
591 | |
592 | static bfd_reloc_status_type | |
c8e7bf0d NC |
593 | aoutarm_fix_pcrel_26 (bfd *abfd, |
594 | arelent *reloc_entry, | |
595 | asymbol *symbol, | |
596 | void * data, | |
597 | asection *input_section, | |
598 | bfd *output_bfd, | |
599 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
600 | { |
601 | bfd_vma relocation; | |
602 | bfd_size_type addr = reloc_entry->address; | |
603 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
604 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
d70910e8 | 605 | |
917583ad | 606 | /* If this is an undefined symbol, return error. */ |
45dfa85a | 607 | if (bfd_is_und_section (symbol->section) |
252b5132 RH |
608 | && (symbol->flags & BSF_WEAK) == 0) |
609 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
610 | ||
611 | /* If the sections are different, and we are doing a partial relocation, | |
612 | just ignore it for now. */ | |
613 | if (symbol->section->name != input_section->name | |
614 | && output_bfd != (bfd *)NULL) | |
615 | return bfd_reloc_continue; | |
616 | ||
617 | relocation = (target & 0x00ffffff) << 2; | |
917583ad | 618 | relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend. */ |
252b5132 RH |
619 | relocation += symbol->value; |
620 | relocation += symbol->section->output_section->vma; | |
621 | relocation += symbol->section->output_offset; | |
622 | relocation += reloc_entry->addend; | |
623 | relocation -= input_section->output_section->vma; | |
624 | relocation -= input_section->output_offset; | |
625 | relocation -= addr; | |
d70910e8 | 626 | |
252b5132 RH |
627 | if (relocation & 3) |
628 | return bfd_reloc_overflow; | |
629 | ||
917583ad | 630 | /* Check for overflow. */ |
252b5132 RH |
631 | if (relocation & 0x02000000) |
632 | { | |
633 | if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff) | |
634 | flag = bfd_reloc_overflow; | |
635 | } | |
dc810e39 | 636 | else if (relocation & ~(bfd_vma) 0x03ffffff) |
252b5132 RH |
637 | flag = bfd_reloc_overflow; |
638 | ||
639 | target &= ~0x00ffffff; | |
640 | target |= (relocation >> 2) & 0x00ffffff; | |
dc810e39 | 641 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
642 | |
643 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
644 | Strictly this is only necessary if we are doing a partial relocation. */ | |
645 | reloc_entry->howto = &aoutarm_std_reloc_howto[ARM_26D]; | |
646 | ||
647 | return flag; | |
648 | } | |
649 | ||
650 | static bfd_reloc_status_type | |
c8e7bf0d NC |
651 | coff_thumb_pcrel_common (bfd *abfd, |
652 | arelent *reloc_entry, | |
653 | asymbol *symbol, | |
654 | void * data, | |
655 | asection *input_section, | |
656 | bfd *output_bfd, | |
657 | char **error_message ATTRIBUTE_UNUSED, | |
658 | thumb_pcrel_branchtype btype) | |
252b5132 RH |
659 | { |
660 | bfd_vma relocation = 0; | |
661 | bfd_size_type addr = reloc_entry->address; | |
662 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
663 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
664 | bfd_vma dstmsk; | |
665 | bfd_vma offmsk; | |
666 | bfd_vma signbit; | |
667 | ||
668 | /* NOTE: This routine is currently used by GAS, but not by the link | |
669 | phase. */ | |
252b5132 RH |
670 | switch (btype) |
671 | { | |
672 | case b9: | |
673 | dstmsk = 0x000000ff; | |
674 | offmsk = 0x000001fe; | |
675 | signbit = 0x00000100; | |
676 | break; | |
677 | ||
678 | case b12: | |
679 | dstmsk = 0x000007ff; | |
680 | offmsk = 0x00000ffe; | |
681 | signbit = 0x00000800; | |
682 | break; | |
683 | ||
684 | case b23: | |
685 | dstmsk = 0x07ff07ff; | |
686 | offmsk = 0x007fffff; | |
687 | signbit = 0x00400000; | |
688 | break; | |
689 | ||
690 | default: | |
691 | abort (); | |
692 | } | |
d70910e8 | 693 | |
917583ad | 694 | /* If this is an undefined symbol, return error. */ |
45dfa85a | 695 | if (bfd_is_und_section (symbol->section) |
252b5132 RH |
696 | && (symbol->flags & BSF_WEAK) == 0) |
697 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
698 | ||
699 | /* If the sections are different, and we are doing a partial relocation, | |
700 | just ignore it for now. */ | |
701 | if (symbol->section->name != input_section->name | |
702 | && output_bfd != (bfd *)NULL) | |
703 | return bfd_reloc_continue; | |
704 | ||
705 | switch (btype) | |
706 | { | |
707 | case b9: | |
708 | case b12: | |
709 | relocation = ((target & dstmsk) << 1); | |
710 | break; | |
711 | ||
712 | case b23: | |
713 | if (bfd_big_endian (abfd)) | |
714 | relocation = ((target & 0x7ff) << 1) | ((target & 0x07ff0000) >> 4); | |
715 | else | |
716 | relocation = ((target & 0x7ff) << 12) | ((target & 0x07ff0000) >> 15); | |
717 | break; | |
718 | ||
719 | default: | |
720 | abort (); | |
721 | } | |
722 | ||
917583ad | 723 | relocation = (relocation ^ signbit) - signbit; /* Sign extend. */ |
252b5132 RH |
724 | relocation += symbol->value; |
725 | relocation += symbol->section->output_section->vma; | |
726 | relocation += symbol->section->output_offset; | |
727 | relocation += reloc_entry->addend; | |
728 | relocation -= input_section->output_section->vma; | |
729 | relocation -= input_section->output_offset; | |
730 | relocation -= addr; | |
731 | ||
732 | if (relocation & 1) | |
733 | return bfd_reloc_overflow; | |
734 | ||
917583ad | 735 | /* Check for overflow. */ |
252b5132 RH |
736 | if (relocation & signbit) |
737 | { | |
738 | if ((relocation & ~offmsk) != ~offmsk) | |
739 | flag = bfd_reloc_overflow; | |
740 | } | |
741 | else if (relocation & ~offmsk) | |
742 | flag = bfd_reloc_overflow; | |
743 | ||
744 | target &= ~dstmsk; | |
745 | switch (btype) | |
746 | { | |
747 | case b9: | |
748 | case b12: | |
749 | target |= (relocation >> 1); | |
750 | break; | |
751 | ||
752 | case b23: | |
753 | if (bfd_big_endian (abfd)) | |
dc810e39 AM |
754 | target |= (((relocation & 0xfff) >> 1) |
755 | | ((relocation << 4) & 0x07ff0000)); | |
252b5132 | 756 | else |
dc810e39 AM |
757 | target |= (((relocation & 0xffe) << 15) |
758 | | ((relocation >> 12) & 0x7ff)); | |
252b5132 RH |
759 | break; |
760 | ||
761 | default: | |
762 | abort (); | |
763 | } | |
764 | ||
dc810e39 | 765 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
766 | |
767 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
768 | Strictly this is only necessary if we are doing a partial relocation. */ | |
769 | reloc_entry->howto = & aoutarm_std_reloc_howto [ARM_26D]; | |
d70910e8 | 770 | |
917583ad | 771 | /* TODO: We should possibly have DONE entries for the THUMB PCREL relocations. */ |
252b5132 RH |
772 | return flag; |
773 | } | |
774 | ||
7831a775 | 775 | #ifndef ARM_WINCE |
252b5132 | 776 | static bfd_reloc_status_type |
c8e7bf0d NC |
777 | coff_thumb_pcrel_23 (bfd *abfd, |
778 | arelent *reloc_entry, | |
779 | asymbol *symbol, | |
780 | void * data, | |
781 | asection *input_section, | |
782 | bfd *output_bfd, | |
783 | char **error_message) | |
252b5132 RH |
784 | { |
785 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
07d6d2b8 | 786 | input_section, output_bfd, error_message, |
dc810e39 | 787 | b23); |
252b5132 RH |
788 | } |
789 | ||
790 | static bfd_reloc_status_type | |
c8e7bf0d NC |
791 | coff_thumb_pcrel_9 (bfd *abfd, |
792 | arelent *reloc_entry, | |
793 | asymbol *symbol, | |
794 | void * data, | |
795 | asection *input_section, | |
796 | bfd *output_bfd, | |
797 | char **error_message) | |
252b5132 RH |
798 | { |
799 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
07d6d2b8 | 800 | input_section, output_bfd, error_message, |
7831a775 | 801 | b9); |
252b5132 | 802 | } |
7831a775 | 803 | #endif /* not ARM_WINCE */ |
252b5132 RH |
804 | |
805 | static bfd_reloc_status_type | |
c8e7bf0d NC |
806 | coff_thumb_pcrel_12 (bfd *abfd, |
807 | arelent *reloc_entry, | |
808 | asymbol *symbol, | |
809 | void * data, | |
810 | asection *input_section, | |
811 | bfd *output_bfd, | |
812 | char **error_message) | |
252b5132 RH |
813 | { |
814 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
07d6d2b8 | 815 | input_section, output_bfd, error_message, |
7831a775 | 816 | b12); |
252b5132 RH |
817 | } |
818 | ||
487096bf | 819 | static reloc_howto_type * |
c8e7bf0d | 820 | coff_arm_reloc_type_lookup (bfd * abfd, bfd_reloc_code_real_type code) |
252b5132 | 821 | { |
af74ae99 | 822 | #define ASTD(i,j) case i: return aoutarm_std_reloc_howto + j |
d70910e8 | 823 | |
252b5132 | 824 | if (code == BFD_RELOC_CTOR) |
30d10e9e | 825 | switch (bfd_arch_bits_per_address (abfd)) |
252b5132 RH |
826 | { |
827 | case 32: | |
07d6d2b8 AM |
828 | code = BFD_RELOC_32; |
829 | break; | |
917583ad | 830 | default: |
c8e7bf0d | 831 | return NULL; |
252b5132 RH |
832 | } |
833 | ||
834 | switch (code) | |
835 | { | |
17505c5c | 836 | #ifdef ARM_WINCE |
07d6d2b8 AM |
837 | ASTD (BFD_RELOC_32, ARM_32); |
838 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
839 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
17505c5c | 840 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); |
07d6d2b8 | 841 | ASTD (BFD_RELOC_32_SECREL, ARM_SECREL); |
17505c5c | 842 | #else |
07d6d2b8 AM |
843 | ASTD (BFD_RELOC_8, ARM_8); |
844 | ASTD (BFD_RELOC_16, ARM_16); | |
845 | ASTD (BFD_RELOC_32, ARM_32); | |
846 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
847 | ASTD (BFD_RELOC_ARM_PCREL_BLX, ARM_26); | |
848 | ASTD (BFD_RELOC_8_PCREL, ARM_DISP8); | |
849 | ASTD (BFD_RELOC_16_PCREL, ARM_DISP16); | |
850 | ASTD (BFD_RELOC_32_PCREL, ARM_DISP32); | |
851 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
252b5132 RH |
852 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH9, ARM_THUMB9); |
853 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); | |
854 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH23, ARM_THUMB23); | |
07d6d2b8 | 855 | ASTD (BFD_RELOC_THUMB_PCREL_BLX, ARM_THUMB23); |
d70910e8 | 856 | #endif |
c8e7bf0d | 857 | default: return NULL; |
252b5132 RH |
858 | } |
859 | } | |
860 | ||
157090f7 AM |
861 | static reloc_howto_type * |
862 | coff_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
863 | const char *r_name) | |
864 | { | |
865 | unsigned int i; | |
866 | ||
867 | for (i = 0; | |
868 | i < (sizeof (aoutarm_std_reloc_howto) | |
869 | / sizeof (aoutarm_std_reloc_howto[0])); | |
870 | i++) | |
871 | if (aoutarm_std_reloc_howto[i].name != NULL | |
872 | && strcasecmp (aoutarm_std_reloc_howto[i].name, r_name) == 0) | |
873 | return &aoutarm_std_reloc_howto[i]; | |
874 | ||
875 | return NULL; | |
876 | } | |
877 | ||
c8e7bf0d | 878 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 |
07d6d2b8 | 879 | #define COFF_PAGE_SIZE 0x1000 |
252b5132 | 880 | |
c8e7bf0d | 881 | /* Turn a howto into a reloc nunmber. */ |
252b5132 | 882 | #define SELECT_RELOC(x,howto) { x.r_type = howto->type; } |
07d6d2b8 AM |
883 | #define BADMAG(x) ARMBADMAG(x) |
884 | #define ARM 1 /* Customize coffcode.h. */ | |
252b5132 | 885 | |
7831a775 | 886 | #ifndef ARM_WINCE |
2106126f | 887 | /* Make sure that the 'r_offset' field is copied properly |
830629ab | 888 | so that identical binaries will compare the same. */ |
2106126f NC |
889 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
890 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 | |
7831a775 | 891 | #endif |
2106126f | 892 | |
252b5132 RH |
893 | /* Extend the coff_link_hash_table structure with a few ARM specific fields. |
894 | This allows us to store global data here without actually creating any | |
895 | global variables, which is a no-no in the BFD world. */ | |
896 | struct coff_arm_link_hash_table | |
917583ad NC |
897 | { |
898 | /* The original coff_link_hash_table structure. MUST be first field. */ | |
899 | struct coff_link_hash_table root; | |
d70910e8 | 900 | |
5c4491d3 | 901 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 902 | bfd_size_type thumb_glue_size; |
d70910e8 | 903 | |
5c4491d3 | 904 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 905 | bfd_size_type arm_glue_size; |
252b5132 | 906 | |
5c4491d3 | 907 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 908 | bfd * bfd_of_glue_owner; |
252b5132 | 909 | |
917583ad | 910 | /* Support interworking with old, non-interworking aware ARM code. */ |
07d6d2b8 | 911 | int support_old_code; |
252b5132 RH |
912 | }; |
913 | ||
914 | /* Get the ARM coff linker hash table from a link_info structure. */ | |
915 | #define coff_arm_hash_table(info) \ | |
916 | ((struct coff_arm_link_hash_table *) ((info)->hash)) | |
917 | ||
918 | /* Create an ARM coff linker hash table. */ | |
919 | ||
920 | static struct bfd_link_hash_table * | |
c8e7bf0d | 921 | coff_arm_link_hash_table_create (bfd * abfd) |
252b5132 RH |
922 | { |
923 | struct coff_arm_link_hash_table * ret; | |
dc810e39 | 924 | bfd_size_type amt = sizeof (struct coff_arm_link_hash_table); |
252b5132 | 925 | |
7bf52ea2 | 926 | ret = bfd_zmalloc (amt); |
c8e7bf0d | 927 | if (ret == NULL) |
252b5132 RH |
928 | return NULL; |
929 | ||
66eb6687 AM |
930 | if (!_bfd_coff_link_hash_table_init (&ret->root, |
931 | abfd, | |
932 | _bfd_coff_link_hash_newfunc, | |
933 | sizeof (struct coff_link_hash_entry))) | |
252b5132 | 934 | { |
e2d34d7d | 935 | free (ret); |
c8e7bf0d | 936 | return NULL; |
252b5132 RH |
937 | } |
938 | ||
252b5132 RH |
939 | return & ret->root.root; |
940 | } | |
941 | ||
b1657152 | 942 | static bfd_boolean |
c8e7bf0d NC |
943 | arm_emit_base_file_entry (struct bfd_link_info *info, |
944 | bfd *output_bfd, | |
945 | asection *input_section, | |
946 | bfd_vma reloc_offset) | |
252b5132 | 947 | { |
b1657152 AM |
948 | bfd_vma addr = (reloc_offset |
949 | - input_section->vma | |
950 | + input_section->output_offset | |
951 | + input_section->output_section->vma); | |
252b5132 | 952 | |
917583ad NC |
953 | if (coff_data (output_bfd)->pe) |
954 | addr -= pe_data (output_bfd)->pe_opthdr.ImageBase; | |
b1657152 AM |
955 | if (fwrite (&addr, sizeof (addr), 1, (FILE *) info->base_file) == 1) |
956 | return TRUE; | |
252b5132 | 957 | |
b1657152 AM |
958 | bfd_set_error (bfd_error_system_call); |
959 | return FALSE; | |
252b5132 RH |
960 | } |
961 | \f | |
7831a775 | 962 | #ifndef ARM_WINCE |
252b5132 RH |
963 | /* The thumb form of a long branch is a bit finicky, because the offset |
964 | encoding is split over two fields, each in it's own instruction. They | |
d70910e8 | 965 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 966 | offset, insert the offset into the thumb branch and return finished |
d70910e8 | 967 | instruction. |
252b5132 | 968 | |
d70910e8 | 969 | It takes two thumb instructions to encode the target address. Each has |
5c4491d3 | 970 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
d70910e8 KH |
971 | H-0.. see below), the lower 11 bits are stored in the other (identified |
972 | by H-1). | |
252b5132 | 973 | |
d70910e8 | 974 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
975 | there you have it. |
976 | ||
977 | Op: 1111 = F, | |
978 | H-0, upper address-0 = 000 | |
979 | Op: 1111 = F, | |
980 | H-1, lower address-0 = 800 | |
981 | ||
d70910e8 | 982 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
983 | the lower one first. It probably doesn't matter. krk@cygnus.com |
984 | ||
985 | XXX: Actually the order does matter. The second instruction (H-1) | |
986 | moves the computed address into the PC, so it must be the second one | |
987 | in the sequence. The problem, however is that whilst little endian code | |
988 | stores the instructions in HI then LOW order, big endian code does the | |
917583ad | 989 | reverse. nickc@cygnus.com. */ |
252b5132 RH |
990 | |
991 | #define LOW_HI_ORDER 0xF800F000 | |
992 | #define HI_LOW_ORDER 0xF000F800 | |
993 | ||
994 | static insn32 | |
c8e7bf0d | 995 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
996 | { |
997 | unsigned int low_bits; | |
998 | unsigned int high_bits; | |
999 | ||
c8e7bf0d | 1000 | BFD_ASSERT ((rel_off & 1) != 1); |
252b5132 | 1001 | |
07d6d2b8 AM |
1002 | rel_off >>= 1; /* Half word aligned address. */ |
1003 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
c8e7bf0d | 1004 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ |
252b5132 RH |
1005 | |
1006 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
1007 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
1008 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
1009 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
1010 | else | |
dc810e39 AM |
1011 | /* FIXME: the BFD library should never abort except for internal errors |
1012 | - it should return an error status. */ | |
917583ad | 1013 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 RH |
1014 | |
1015 | return br_insn; | |
1016 | } | |
7831a775 | 1017 | |
252b5132 RH |
1018 | \f |
1019 | static struct coff_link_hash_entry * | |
c8e7bf0d NC |
1020 | find_thumb_glue (struct bfd_link_info *info, |
1021 | const char *name, | |
1022 | bfd *input_bfd) | |
252b5132 | 1023 | { |
dc810e39 AM |
1024 | char *tmp_name; |
1025 | struct coff_link_hash_entry *myh; | |
1026 | bfd_size_type amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; | |
252b5132 | 1027 | |
c8e7bf0d | 1028 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1029 | |
1030 | BFD_ASSERT (tmp_name); | |
1031 | ||
1032 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1033 | |
252b5132 | 1034 | myh = coff_link_hash_lookup |
b34976b6 | 1035 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1036 | |
252b5132 RH |
1037 | if (myh == NULL) |
1038 | /* xgettext:c-format */ | |
871b3ab2 | 1039 | _bfd_error_handler (_("%pB: unable to find THUMB glue '%s' for `%s'"), |
d003868e | 1040 | input_bfd, tmp_name, name); |
d70910e8 | 1041 | |
252b5132 RH |
1042 | free (tmp_name); |
1043 | ||
1044 | return myh; | |
1045 | } | |
7831a775 | 1046 | #endif /* not ARM_WINCE */ |
252b5132 RH |
1047 | |
1048 | static struct coff_link_hash_entry * | |
c8e7bf0d NC |
1049 | find_arm_glue (struct bfd_link_info *info, |
1050 | const char *name, | |
1051 | bfd *input_bfd) | |
252b5132 | 1052 | { |
dc810e39 | 1053 | char *tmp_name; |
252b5132 | 1054 | struct coff_link_hash_entry * myh; |
dc810e39 | 1055 | bfd_size_type amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
252b5132 | 1056 | |
c8e7bf0d | 1057 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1058 | |
1059 | BFD_ASSERT (tmp_name); | |
1060 | ||
1061 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1062 | |
252b5132 | 1063 | myh = coff_link_hash_lookup |
b34976b6 | 1064 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1065 | |
1066 | if (myh == NULL) | |
1067 | /* xgettext:c-format */ | |
871b3ab2 | 1068 | _bfd_error_handler (_("%pB: unable to find ARM glue '%s' for `%s'"), |
d003868e | 1069 | input_bfd, tmp_name, name); |
d70910e8 | 1070 | |
252b5132 RH |
1071 | free (tmp_name); |
1072 | ||
1073 | return myh; | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | ARM->Thumb glue: | |
1078 | ||
1079 | .arm | |
1080 | __func_from_arm: | |
1081 | ldr r12, __func_addr | |
1082 | bx r12 | |
1083 | __func_addr: | |
07d6d2b8 | 1084 | .word func @ behave as if you saw a ARM_32 reloc |
252b5132 RH |
1085 | */ |
1086 | ||
1087 | #define ARM2THUMB_GLUE_SIZE 12 | |
1088 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
1089 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
1090 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
1091 | ||
252b5132 RH |
1092 | /* |
1093 | Thumb->ARM: Thumb->(non-interworking aware) ARM | |
1094 | ||
1095 | .thumb .thumb | |
1096 | .align 2 .align 2 | |
1097 | __func_from_thumb: __func_from_thumb: | |
1098 | bx pc push {r6, lr} | |
1099 | nop ldr r6, __func_addr | |
1100 | .arm mov lr, pc | |
1101 | __func_change_to_arm: bx r6 | |
07d6d2b8 | 1102 | b func .arm |
252b5132 | 1103 | __func_back_to_thumb: |
07d6d2b8 AM |
1104 | ldmia r13! {r6, lr} |
1105 | bx lr | |
1106 | __func_addr: | |
1107 | .word func | |
252b5132 RH |
1108 | */ |
1109 | ||
1110 | #define THUMB2ARM_GLUE_SIZE (globals->support_old_code ? 20 : 8) | |
2dc773a0 | 1111 | #ifndef ARM_WINCE |
252b5132 RH |
1112 | static const insn16 t2a1_bx_pc_insn = 0x4778; |
1113 | static const insn16 t2a2_noop_insn = 0x46c0; | |
1114 | static const insn32 t2a3_b_insn = 0xea000000; | |
1115 | ||
252b5132 RH |
1116 | static const insn16 t2a1_push_insn = 0xb540; |
1117 | static const insn16 t2a2_ldr_insn = 0x4e03; | |
1118 | static const insn16 t2a3_mov_insn = 0x46fe; | |
1119 | static const insn16 t2a4_bx_insn = 0x4730; | |
1120 | static const insn32 t2a5_pop_insn = 0xe8bd4040; | |
1121 | static const insn32 t2a6_bx_insn = 0xe12fff1e; | |
2dc773a0 | 1122 | #endif |
252b5132 RH |
1123 | |
1124 | /* TODO: | |
1125 | We should really create new local (static) symbols in destination | |
1126 | object for each stub we create. We should also create local | |
1127 | (static) symbols within the stubs when switching between ARM and | |
1128 | Thumb code. This will ensure that the debugger and disassembler | |
1129 | can present a better view of stubs. | |
1130 | ||
1131 | We can treat stubs like literal sections, and for the THUMB9 ones | |
1132 | (short addressing range) we should be able to insert the stubs | |
1133 | between sections. i.e. the simplest approach (since relocations | |
1134 | are done on a section basis) is to dump the stubs at the end of | |
1135 | processing a section. That way we can always try and minimise the | |
1136 | offset to and from a stub. However, this does not map well onto | |
1137 | the way that the linker/BFD does its work: mapping all input | |
1138 | sections to output sections via the linker script before doing | |
1139 | all the processing. | |
1140 | ||
1141 | Unfortunately it may be easier to just to disallow short range | |
1142 | Thumb->ARM stubs (i.e. no conditional inter-working branches, | |
1143 | only branch-and-link (BL) calls. This will simplify the processing | |
1144 | since we can then put all of the stubs into their own section. | |
1145 | ||
1146 | TODO: | |
1147 | On a different subject, rather than complaining when a | |
1148 | branch cannot fit in the number of bits available for the | |
1149 | instruction we should generate a trampoline stub (needed to | |
1150 | address the complete 32bit address space). */ | |
1151 | ||
d70910e8 | 1152 | /* The standard COFF backend linker does not cope with the special |
252b5132 RH |
1153 | Thumb BRANCH23 relocation. The alternative would be to split the |
1154 | BRANCH23 into seperate HI23 and LO23 relocations. However, it is a | |
d70910e8 | 1155 | bit simpler simply providing our own relocation driver. */ |
252b5132 RH |
1156 | |
1157 | /* The reloc processing routine for the ARM/Thumb COFF linker. NOTE: | |
1158 | This code is a very slightly modified copy of | |
1159 | _bfd_coff_generic_relocate_section. It would be a much more | |
1160 | maintainable solution to have a MACRO that could be expanded within | |
1161 | _bfd_coff_generic_relocate_section that would only be provided for | |
1162 | ARM/Thumb builds. It is only the code marked THUMBEXTENSION that | |
1163 | is different from the original. */ | |
1164 | ||
b34976b6 | 1165 | static bfd_boolean |
c8e7bf0d NC |
1166 | coff_arm_relocate_section (bfd *output_bfd, |
1167 | struct bfd_link_info *info, | |
1168 | bfd *input_bfd, | |
1169 | asection *input_section, | |
1170 | bfd_byte *contents, | |
1171 | struct internal_reloc *relocs, | |
1172 | struct internal_syment *syms, | |
1173 | asection **sections) | |
252b5132 RH |
1174 | { |
1175 | struct internal_reloc * rel; | |
1176 | struct internal_reloc * relend; | |
2dc773a0 | 1177 | #ifndef ARM_WINCE |
07515404 | 1178 | bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); |
2dc773a0 | 1179 | #endif |
252b5132 RH |
1180 | |
1181 | rel = relocs; | |
1182 | relend = rel + input_section->reloc_count; | |
1183 | ||
1184 | for (; rel < relend; rel++) | |
1185 | { | |
07d6d2b8 AM |
1186 | int done = 0; |
1187 | long symndx; | |
252b5132 | 1188 | struct coff_link_hash_entry * h; |
07d6d2b8 AM |
1189 | struct internal_syment * sym; |
1190 | bfd_vma addend; | |
1191 | bfd_vma val; | |
1192 | reloc_howto_type * howto; | |
1193 | bfd_reloc_status_type rstat; | |
1194 | bfd_vma h_val; | |
252b5132 RH |
1195 | |
1196 | symndx = rel->r_symndx; | |
1197 | ||
1198 | if (symndx == -1) | |
1199 | { | |
1200 | h = NULL; | |
1201 | sym = NULL; | |
1202 | } | |
1203 | else | |
d70910e8 | 1204 | { |
252b5132 RH |
1205 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
1206 | sym = syms + symndx; | |
1207 | } | |
1208 | ||
1209 | /* COFF treats common symbols in one of two ways. Either the | |
07d6d2b8 AM |
1210 | size of the symbol is included in the section contents, or it |
1211 | is not. We assume that the size is not included, and force | |
1212 | the rtype_to_howto function to adjust the addend as needed. */ | |
252b5132 RH |
1213 | |
1214 | if (sym != NULL && sym->n_scnum != 0) | |
1215 | addend = - sym->n_value; | |
1216 | else | |
1217 | addend = 0; | |
1218 | ||
252b5132 RH |
1219 | howto = coff_rtype_to_howto (input_bfd, input_section, rel, h, |
1220 | sym, &addend); | |
1221 | if (howto == NULL) | |
b34976b6 | 1222 | return FALSE; |
252b5132 RH |
1223 | |
1224 | /* The relocation_section function will skip pcrel_offset relocs | |
07d6d2b8 AM |
1225 | when doing a relocatable link. However, we want to convert |
1226 | ARM_26 to ARM_26D relocs if possible. We return a fake howto in | |
1227 | this case without pcrel_offset set, and adjust the addend to | |
1228 | compensate. 'partial_inplace' is also set, since we want 'done' | |
1229 | relocations to be reflected in section's data. */ | |
252b5132 | 1230 | if (rel->r_type == ARM_26 |
07d6d2b8 AM |
1231 | && h != NULL |
1232 | && bfd_link_relocatable (info) | |
1233 | && (h->root.type == bfd_link_hash_defined | |
252b5132 | 1234 | || h->root.type == bfd_link_hash_defweak) |
07d6d2b8 | 1235 | && (h->root.u.def.section->output_section |
dc810e39 | 1236 | == input_section->output_section)) |
07d6d2b8 AM |
1237 | { |
1238 | static reloc_howto_type fake_arm26_reloc = | |
252b5132 | 1239 | HOWTO (ARM_26, |
07d6d2b8 AM |
1240 | 2, |
1241 | 2, | |
1242 | 24, | |
1243 | TRUE, | |
1244 | 0, | |
1245 | complain_overflow_signed, | |
1246 | aoutarm_fix_pcrel_26 , | |
1247 | "ARM_26", | |
1248 | TRUE, | |
1249 | 0x00ffffff, | |
1250 | 0x00ffffff, | |
1251 | FALSE); | |
1252 | ||
1253 | addend -= rel->r_vaddr - input_section->vma; | |
44e88952 | 1254 | #ifdef ARM_WINCE |
07d6d2b8 AM |
1255 | /* FIXME: I don't know why, but the hack is necessary for correct |
1256 | generation of bl's instruction offset. */ | |
1257 | addend -= 8; | |
44e88952 | 1258 | #endif |
07d6d2b8 AM |
1259 | howto = & fake_arm26_reloc; |
1260 | } | |
252b5132 | 1261 | |
17505c5c NC |
1262 | #ifdef ARM_WINCE |
1263 | /* MS ARM-CE makes the reloc relative to the opcode's pc, not | |
d70910e8 | 1264 | the next opcode's pc, so is off by one. */ |
0e1862bb | 1265 | if (howto->pc_relative && !bfd_link_relocatable (info)) |
53baae48 | 1266 | addend -= 8; |
17505c5c | 1267 | #endif |
d70910e8 | 1268 | |
1049f94e | 1269 | /* If we are doing a relocatable link, then we can just ignore |
07d6d2b8 AM |
1270 | a PC relative reloc that is pcrel_offset. It will already |
1271 | have the correct value. If this is not a relocatable link, | |
1272 | then we should ignore the symbol value. */ | |
252b5132 | 1273 | if (howto->pc_relative && howto->pcrel_offset) |
07d6d2b8 AM |
1274 | { |
1275 | if (bfd_link_relocatable (info)) | |
1276 | continue; | |
87748b32 NC |
1277 | /* FIXME - it is not clear which targets need this next test |
1278 | and which do not. It is known that it is needed for the | |
ddb00039 AM |
1279 | VxWorks targets but it is also known that it was suppressed |
1280 | for other ARM targets. This ought to be sorted out one day. */ | |
d8adc60f | 1281 | #ifdef ARM_COFF_BUGFIX |
87748b32 NC |
1282 | /* We must not ignore the symbol value. If the symbol is |
1283 | within the same section, the relocation should have already | |
1284 | been fixed, but if it is not, we'll be handed a reloc into | |
1285 | the beginning of the symbol's section, so we must not cancel | |
1286 | out the symbol's value, otherwise we'll be adding it in | |
1287 | twice. */ | |
07d6d2b8 AM |
1288 | if (sym != NULL && sym->n_scnum != 0) |
1289 | addend += sym->n_value; | |
ed1de528 | 1290 | #endif |
07d6d2b8 | 1291 | } |
252b5132 RH |
1292 | |
1293 | val = 0; | |
1294 | ||
1295 | if (h == NULL) | |
1296 | { | |
1297 | asection *sec; | |
1298 | ||
1299 | if (symndx == -1) | |
1300 | { | |
1301 | sec = bfd_abs_section_ptr; | |
1302 | val = 0; | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | sec = sections[symndx]; | |
07d6d2b8 | 1307 | val = (sec->output_section->vma |
252b5132 RH |
1308 | + sec->output_offset |
1309 | + sym->n_value | |
1310 | - sec->vma); | |
1311 | } | |
1312 | } | |
1313 | else | |
1314 | { | |
07d6d2b8 AM |
1315 | /* We don't output the stubs if we are generating a |
1316 | relocatable output file, since we may as well leave the | |
1317 | stub generation to the final linker pass. If we fail to | |
252b5132 | 1318 | verify that the name is defined, we'll try to build stubs |
d70910e8 | 1319 | for an undefined name... */ |
07d6d2b8 | 1320 | if (! bfd_link_relocatable (info) |
252b5132 RH |
1321 | && ( h->root.type == bfd_link_hash_defined |
1322 | || h->root.type == bfd_link_hash_defweak)) | |
07d6d2b8 | 1323 | { |
252b5132 RH |
1324 | asection * h_sec = h->root.u.def.section; |
1325 | const char * name = h->root.root.string; | |
d70910e8 | 1326 | |
252b5132 RH |
1327 | /* h locates the symbol referenced in the reloc. */ |
1328 | h_val = (h->root.u.def.value | |
1329 | + h_sec->output_section->vma | |
1330 | + h_sec->output_offset); | |
1331 | ||
07d6d2b8 AM |
1332 | if (howto->type == ARM_26) |
1333 | { | |
1334 | if ( h->symbol_class == C_THUMBSTATFUNC | |
96d56e9f | 1335 | || h->symbol_class == C_THUMBEXTFUNC) |
252b5132 | 1336 | { |
917583ad | 1337 | /* Arm code calling a Thumb function. */ |
07d6d2b8 AM |
1338 | unsigned long int tmp; |
1339 | bfd_vma my_offset; | |
1340 | asection * s; | |
1341 | long int ret_offset; | |
1342 | struct coff_link_hash_entry * myh; | |
252b5132 | 1343 | struct coff_arm_link_hash_table * globals; |
d70910e8 | 1344 | |
252b5132 RH |
1345 | myh = find_arm_glue (info, name, input_bfd); |
1346 | if (myh == NULL) | |
b34976b6 | 1347 | return FALSE; |
252b5132 RH |
1348 | |
1349 | globals = coff_arm_hash_table (info); | |
1350 | ||
1351 | BFD_ASSERT (globals != NULL); | |
1352 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1353 | |
252b5132 | 1354 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1355 | |
1356 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 RH |
1357 | ARM2THUMB_GLUE_SECTION_NAME); |
1358 | BFD_ASSERT (s != NULL); | |
1359 | BFD_ASSERT (s->contents != NULL); | |
1360 | BFD_ASSERT (s->output_section != NULL); | |
1361 | ||
1362 | if ((my_offset & 0x01) == 0x01) | |
1363 | { | |
1364 | if (h_sec->owner != NULL | |
1365 | && INTERWORK_SET (h_sec->owner) | |
1366 | && ! INTERWORK_FLAG (h_sec->owner)) | |
d003868e AM |
1367 | _bfd_error_handler |
1368 | /* xgettext:c-format */ | |
59d08d6c AM |
1369 | (_("%pB(%s): warning: interworking not enabled; " |
1370 | "first occurrence: %pB: arm call to thumb"), | |
c08bb8dd | 1371 | h_sec->owner, name, input_bfd); |
252b5132 RH |
1372 | |
1373 | --my_offset; | |
1374 | myh->root.u.def.value = my_offset; | |
1375 | ||
dc810e39 | 1376 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, |
252b5132 | 1377 | s->contents + my_offset); |
d70910e8 | 1378 | |
dc810e39 | 1379 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
252b5132 | 1380 | s->contents + my_offset + 4); |
d70910e8 | 1381 | |
252b5132 RH |
1382 | /* It's a thumb address. Add the low order bit. */ |
1383 | bfd_put_32 (output_bfd, h_val | a2t3_func_addr_insn, | |
1384 | s->contents + my_offset + 8); | |
1385 | ||
07d6d2b8 | 1386 | if (info->base_file |
b1657152 AM |
1387 | && !arm_emit_base_file_entry (info, output_bfd, |
1388 | s, my_offset + 8)) | |
1389 | return FALSE; | |
252b5132 RH |
1390 | } |
1391 | ||
1392 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
1393 | ||
1394 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr | |
1395 | - input_section->vma); | |
d70910e8 | 1396 | |
252b5132 RH |
1397 | tmp = tmp & 0xFF000000; |
1398 | ||
d70910e8 | 1399 | /* Somehow these are both 4 too far, so subtract 8. */ |
252b5132 RH |
1400 | ret_offset = |
1401 | s->output_offset | |
d70910e8 | 1402 | + my_offset |
252b5132 RH |
1403 | + s->output_section->vma |
1404 | - (input_section->output_offset | |
d70910e8 | 1405 | + input_section->output_section->vma |
252b5132 RH |
1406 | + rel->r_vaddr) |
1407 | - 8; | |
1408 | ||
1409 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); | |
d70910e8 | 1410 | |
dc810e39 AM |
1411 | bfd_put_32 (output_bfd, (bfd_vma) tmp, |
1412 | contents + rel->r_vaddr - input_section->vma); | |
252b5132 RH |
1413 | done = 1; |
1414 | } | |
07d6d2b8 | 1415 | } |
d70910e8 | 1416 | |
17505c5c | 1417 | #ifndef ARM_WINCE |
917583ad | 1418 | /* Note: We used to check for ARM_THUMB9 and ARM_THUMB12. */ |
07d6d2b8 AM |
1419 | else if (howto->type == ARM_THUMB23) |
1420 | { | |
1421 | if ( h->symbol_class == C_EXT | |
96d56e9f NC |
1422 | || h->symbol_class == C_STAT |
1423 | || h->symbol_class == C_LABEL) | |
252b5132 | 1424 | { |
c8e7bf0d | 1425 | /* Thumb code calling an ARM function. */ |
07d6d2b8 AM |
1426 | asection * s = 0; |
1427 | bfd_vma my_offset; | |
1428 | unsigned long int tmp; | |
1429 | long int ret_offset; | |
1430 | struct coff_link_hash_entry * myh; | |
1431 | struct coff_arm_link_hash_table * globals; | |
252b5132 RH |
1432 | |
1433 | myh = find_thumb_glue (info, name, input_bfd); | |
1434 | if (myh == NULL) | |
b34976b6 | 1435 | return FALSE; |
252b5132 RH |
1436 | |
1437 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1438 | |
252b5132 RH |
1439 | BFD_ASSERT (globals != NULL); |
1440 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1441 | |
252b5132 | 1442 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1443 | |
1444 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 | 1445 | THUMB2ARM_GLUE_SECTION_NAME); |
d70910e8 | 1446 | |
252b5132 RH |
1447 | BFD_ASSERT (s != NULL); |
1448 | BFD_ASSERT (s->contents != NULL); | |
1449 | BFD_ASSERT (s->output_section != NULL); | |
d70910e8 | 1450 | |
252b5132 RH |
1451 | if ((my_offset & 0x01) == 0x01) |
1452 | { | |
1453 | if (h_sec->owner != NULL | |
1454 | && INTERWORK_SET (h_sec->owner) | |
1455 | && ! INTERWORK_FLAG (h_sec->owner) | |
1456 | && ! globals->support_old_code) | |
d003868e AM |
1457 | _bfd_error_handler |
1458 | /* xgettext:c-format */ | |
59d08d6c AM |
1459 | (_("%pB(%s): warning: interworking not enabled; " |
1460 | "first occurrence: %pB: thumb call to arm; " | |
1461 | "consider relinking with --support-old-code " | |
1462 | "enabled"), | |
c08bb8dd | 1463 | h_sec->owner, name, input_bfd); |
d70910e8 | 1464 | |
252b5132 RH |
1465 | -- my_offset; |
1466 | myh->root.u.def.value = my_offset; | |
1467 | ||
1468 | if (globals->support_old_code) | |
1469 | { | |
dc810e39 | 1470 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_push_insn, |
252b5132 | 1471 | s->contents + my_offset); |
d70910e8 | 1472 | |
dc810e39 | 1473 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_ldr_insn, |
252b5132 RH |
1474 | s->contents + my_offset + 2); |
1475 | ||
dc810e39 | 1476 | bfd_put_16 (output_bfd, (bfd_vma) t2a3_mov_insn, |
252b5132 RH |
1477 | s->contents + my_offset + 4); |
1478 | ||
dc810e39 | 1479 | bfd_put_16 (output_bfd, (bfd_vma) t2a4_bx_insn, |
252b5132 | 1480 | s->contents + my_offset + 6); |
d70910e8 | 1481 | |
dc810e39 | 1482 | bfd_put_32 (output_bfd, (bfd_vma) t2a5_pop_insn, |
252b5132 | 1483 | s->contents + my_offset + 8); |
d70910e8 | 1484 | |
dc810e39 | 1485 | bfd_put_32 (output_bfd, (bfd_vma) t2a6_bx_insn, |
252b5132 | 1486 | s->contents + my_offset + 12); |
d70910e8 | 1487 | |
252b5132 RH |
1488 | /* Store the address of the function in the last word of the stub. */ |
1489 | bfd_put_32 (output_bfd, h_val, | |
1490 | s->contents + my_offset + 16); | |
fa0e42e4 | 1491 | |
07d6d2b8 | 1492 | if (info->base_file |
b1657152 AM |
1493 | && !arm_emit_base_file_entry (info, |
1494 | output_bfd, s, | |
1495 | my_offset + 16)) | |
1496 | return FALSE; | |
252b5132 RH |
1497 | } |
1498 | else | |
1499 | { | |
dc810e39 | 1500 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 | 1501 | s->contents + my_offset); |
d70910e8 | 1502 | |
dc810e39 | 1503 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 | 1504 | s->contents + my_offset + 2); |
d70910e8 | 1505 | |
252b5132 | 1506 | ret_offset = |
c8e7bf0d NC |
1507 | /* Address of destination of the stub. */ |
1508 | ((bfd_signed_vma) h_val) | |
252b5132 | 1509 | - ((bfd_signed_vma) |
c8e7bf0d NC |
1510 | /* Offset from the start of the current section to the start of the stubs. */ |
1511 | (s->output_offset | |
1512 | /* Offset of the start of this stub from the start of the stubs. */ | |
1513 | + my_offset | |
1514 | /* Address of the start of the current section. */ | |
1515 | + s->output_section->vma) | |
1516 | /* The branch instruction is 4 bytes into the stub. */ | |
1517 | + 4 | |
1518 | /* ARM branches work from the pc of the instruction + 8. */ | |
1519 | + 8); | |
d70910e8 | 1520 | |
252b5132 | 1521 | bfd_put_32 (output_bfd, |
dc810e39 | 1522 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
1523 | s->contents + my_offset + 4); |
1524 | ||
252b5132 RH |
1525 | } |
1526 | } | |
1527 | ||
1528 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
1529 | ||
1530 | /* Now go back and fix up the original BL insn to point | |
1531 | to here. */ | |
1532 | ret_offset = | |
1533 | s->output_offset | |
1534 | + my_offset | |
1535 | - (input_section->output_offset | |
1536 | + rel->r_vaddr) | |
1537 | -4; | |
d70910e8 | 1538 | |
252b5132 RH |
1539 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr |
1540 | - input_section->vma); | |
1541 | ||
1542 | bfd_put_32 (output_bfd, | |
dc810e39 AM |
1543 | (bfd_vma) insert_thumb_branch (tmp, |
1544 | ret_offset), | |
1545 | contents + rel->r_vaddr - input_section->vma); | |
d70910e8 | 1546 | |
252b5132 | 1547 | done = 1; |
07d6d2b8 AM |
1548 | } |
1549 | } | |
17505c5c | 1550 | #endif |
07d6d2b8 | 1551 | } |
d70910e8 | 1552 | |
07d6d2b8 AM |
1553 | /* If the relocation type and destination symbol does not |
1554 | fall into one of the above categories, then we can just | |
1555 | perform a direct link. */ | |
252b5132 RH |
1556 | |
1557 | if (done) | |
1558 | rstat = bfd_reloc_ok; | |
d70910e8 | 1559 | else |
252b5132 RH |
1560 | if ( h->root.type == bfd_link_hash_defined |
1561 | || h->root.type == bfd_link_hash_defweak) | |
1562 | { | |
1563 | asection *sec; | |
1564 | ||
1565 | sec = h->root.u.def.section; | |
1566 | val = (h->root.u.def.value | |
1567 | + sec->output_section->vma | |
1568 | + sec->output_offset); | |
1569 | } | |
1570 | ||
0e1862bb | 1571 | else if (! bfd_link_relocatable (info)) |
1a72702b AM |
1572 | (*info->callbacks->undefined_symbol) |
1573 | (info, h->root.root.string, input_bfd, input_section, | |
1574 | rel->r_vaddr - input_section->vma, TRUE); | |
252b5132 RH |
1575 | } |
1576 | ||
b1657152 AM |
1577 | /* Emit a reloc if the backend thinks it needs it. */ |
1578 | if (info->base_file | |
1579 | && sym | |
1580 | && pe_data(output_bfd)->in_reloc_p(output_bfd, howto) | |
1581 | && !arm_emit_base_file_entry (info, output_bfd, input_section, | |
1582 | rel->r_vaddr)) | |
1583 | return FALSE; | |
d70910e8 | 1584 | |
252b5132 RH |
1585 | if (done) |
1586 | rstat = bfd_reloc_ok; | |
17505c5c | 1587 | #ifndef ARM_WINCE |
c8e7bf0d | 1588 | /* Only perform this fix during the final link, not a relocatable link. */ |
0e1862bb | 1589 | else if (! bfd_link_relocatable (info) |
252b5132 | 1590 | && howto->type == ARM_THUMB23) |
07d6d2b8 AM |
1591 | { |
1592 | /* This is pretty much a copy of what the default | |
1593 | _bfd_final_link_relocate and _bfd_relocate_contents | |
1594 | routines do to perform a relocation, with special | |
1595 | processing for the split addressing of the Thumb BL | |
1596 | instruction. Again, it would probably be simpler adding a | |
1597 | ThumbBRANCH23 specific macro expansion into the default | |
1598 | code. */ | |
d70910e8 | 1599 | |
07d6d2b8 | 1600 | bfd_vma address = rel->r_vaddr - input_section->vma; |
d70910e8 | 1601 | |
07515404 | 1602 | if (address > high_address) |
252b5132 | 1603 | rstat = bfd_reloc_outofrange; |
07d6d2b8 AM |
1604 | else |
1605 | { | |
1606 | bfd_vma relocation = val + addend; | |
b34976b6 AM |
1607 | int size = bfd_get_reloc_size (howto); |
1608 | bfd_boolean overflow = FALSE; | |
1609 | bfd_byte *location = contents + address; | |
1610 | bfd_vma x = bfd_get_32 (input_bfd, location); | |
1611 | bfd_vma src_mask = 0x007FFFFE; | |
1612 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; | |
1613 | bfd_signed_vma reloc_signed_min = ~reloc_signed_max; | |
1614 | bfd_vma check; | |
1615 | bfd_signed_vma signed_check; | |
1616 | bfd_vma add; | |
1617 | bfd_signed_vma signed_add; | |
252b5132 RH |
1618 | |
1619 | BFD_ASSERT (size == 4); | |
d70910e8 | 1620 | |
07d6d2b8 AM |
1621 | /* howto->pc_relative should be TRUE for type 14 BRANCH23. */ |
1622 | relocation -= (input_section->output_section->vma | |
1623 | + input_section->output_offset); | |
d70910e8 | 1624 | |
07d6d2b8 AM |
1625 | /* howto->pcrel_offset should be TRUE for type 14 BRANCH23. */ |
1626 | relocation -= address; | |
d70910e8 KH |
1627 | |
1628 | /* No need to negate the relocation with BRANCH23. */ | |
252b5132 RH |
1629 | /* howto->complain_on_overflow == complain_overflow_signed for BRANCH23. */ |
1630 | /* howto->rightshift == 1 */ | |
d70910e8 | 1631 | |
4f3c3dbb | 1632 | /* Drop unwanted bits from the value we are relocating to. */ |
252b5132 | 1633 | check = relocation >> howto->rightshift; |
d70910e8 | 1634 | |
252b5132 RH |
1635 | /* If this is a signed value, the rightshift just dropped |
1636 | leading 1 bits (assuming twos complement). */ | |
1637 | if ((bfd_signed_vma) relocation >= 0) | |
1638 | signed_check = check; | |
1639 | else | |
1640 | signed_check = (check | |
1641 | | ((bfd_vma) - 1 | |
1642 | & ~((bfd_vma) - 1 >> howto->rightshift))); | |
d70910e8 | 1643 | |
252b5132 RH |
1644 | /* Get the value from the object file. */ |
1645 | if (bfd_big_endian (input_bfd)) | |
4f3c3dbb | 1646 | add = (((x) & 0x07ff0000) >> 4) | (((x) & 0x7ff) << 1); |
252b5132 | 1647 | else |
4f3c3dbb | 1648 | add = ((((x) & 0x7ff) << 12) | (((x) & 0x07ff0000) >> 15)); |
252b5132 RH |
1649 | |
1650 | /* Get the value from the object file with an appropriate sign. | |
1651 | The expression involving howto->src_mask isolates the upper | |
1652 | bit of src_mask. If that bit is set in the value we are | |
1653 | adding, it is negative, and we subtract out that number times | |
1654 | two. If src_mask includes the highest possible bit, then we | |
1655 | can not get the upper bit, but that does not matter since | |
1656 | signed_add needs no adjustment to become negative in that | |
1657 | case. */ | |
252b5132 | 1658 | signed_add = add; |
d70910e8 | 1659 | |
252b5132 RH |
1660 | if ((add & (((~ src_mask) >> 1) & src_mask)) != 0) |
1661 | signed_add -= (((~ src_mask) >> 1) & src_mask) << 1; | |
d70910e8 | 1662 | |
4f3c3dbb | 1663 | /* howto->bitpos == 0 */ |
252b5132 RH |
1664 | /* Add the value from the object file, shifted so that it is a |
1665 | straight number. */ | |
252b5132 | 1666 | signed_check += signed_add; |
4f3c3dbb | 1667 | relocation += signed_add; |
252b5132 RH |
1668 | |
1669 | BFD_ASSERT (howto->complain_on_overflow == complain_overflow_signed); | |
1670 | ||
1671 | /* Assumes two's complement. */ | |
1672 | if ( signed_check > reloc_signed_max | |
1673 | || signed_check < reloc_signed_min) | |
b34976b6 | 1674 | overflow = TRUE; |
d70910e8 | 1675 | |
c62e1cc3 NC |
1676 | /* Put the relocation into the correct bits. |
1677 | For a BLX instruction, make sure that the relocation is rounded up | |
1678 | to a word boundary. This follows the semantics of the instruction | |
1679 | which specifies that bit 1 of the target address will come from bit | |
1680 | 1 of the base address. */ | |
252b5132 | 1681 | if (bfd_big_endian (input_bfd)) |
07d6d2b8 | 1682 | { |
c62e1cc3 NC |
1683 | if ((x & 0x1800) == 0x0800 && (relocation & 0x02)) |
1684 | relocation += 2; | |
1685 | relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000)); | |
1686 | } | |
252b5132 | 1687 | else |
07d6d2b8 | 1688 | { |
c62e1cc3 NC |
1689 | if ((x & 0x18000000) == 0x08000000 && (relocation & 0x02)) |
1690 | relocation += 2; | |
1691 | relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff)); | |
1692 | } | |
d70910e8 | 1693 | |
4f3c3dbb | 1694 | /* Add the relocation to the correct bits of X. */ |
252b5132 RH |
1695 | x = ((x & ~howto->dst_mask) | relocation); |
1696 | ||
4f3c3dbb | 1697 | /* Put the relocated value back in the object file. */ |
252b5132 RH |
1698 | bfd_put_32 (input_bfd, x, location); |
1699 | ||
1700 | rstat = overflow ? bfd_reloc_overflow : bfd_reloc_ok; | |
07d6d2b8 AM |
1701 | } |
1702 | } | |
17505c5c | 1703 | #endif |
252b5132 | 1704 | else |
07d6d2b8 AM |
1705 | if (bfd_link_relocatable (info) && ! howto->partial_inplace) |
1706 | rstat = bfd_reloc_ok; | |
1707 | else | |
1e7fef1d NC |
1708 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, |
1709 | contents, | |
1710 | rel->r_vaddr - input_section->vma, | |
1711 | val, addend); | |
c8e7bf0d | 1712 | /* Only perform this fix during the final link, not a relocatable link. */ |
0e1862bb | 1713 | if (! bfd_link_relocatable (info) |
b44267fd | 1714 | && (rel->r_type == ARM_32 || rel->r_type == ARM_RVA32)) |
252b5132 RH |
1715 | { |
1716 | /* Determine if we need to set the bottom bit of a relocated address | |
1717 | because the address is the address of a Thumb code symbol. */ | |
b34976b6 | 1718 | int patchit = FALSE; |
d70910e8 | 1719 | |
252b5132 | 1720 | if (h != NULL |
96d56e9f NC |
1721 | && ( h->symbol_class == C_THUMBSTATFUNC |
1722 | || h->symbol_class == C_THUMBEXTFUNC)) | |
252b5132 | 1723 | { |
b34976b6 | 1724 | patchit = TRUE; |
252b5132 RH |
1725 | } |
1726 | else if (sym != NULL | |
1727 | && sym->n_scnum > N_UNDEF) | |
1728 | { | |
1729 | /* No hash entry - use the symbol instead. */ | |
252b5132 RH |
1730 | if ( sym->n_sclass == C_THUMBSTATFUNC |
1731 | || sym->n_sclass == C_THUMBEXTFUNC) | |
b34976b6 | 1732 | patchit = TRUE; |
252b5132 RH |
1733 | } |
1734 | ||
1735 | if (patchit) | |
1736 | { | |
1737 | bfd_byte * location = contents + rel->r_vaddr - input_section->vma; | |
07d6d2b8 | 1738 | bfd_vma x = bfd_get_32 (input_bfd, location); |
252b5132 RH |
1739 | |
1740 | bfd_put_32 (input_bfd, x | 1, location); | |
1741 | } | |
1742 | } | |
d70910e8 | 1743 | |
252b5132 RH |
1744 | switch (rstat) |
1745 | { | |
1746 | default: | |
1747 | abort (); | |
1748 | case bfd_reloc_ok: | |
1749 | break; | |
1750 | case bfd_reloc_outofrange: | |
4eca0228 | 1751 | _bfd_error_handler |
695344c0 | 1752 | /* xgettext:c-format */ |
2dcf00ce AM |
1753 | (_("%pB: bad reloc address %#" PRIx64 " in section `%pA'"), |
1754 | input_bfd, (uint64_t) rel->r_vaddr, input_section); | |
b34976b6 | 1755 | return FALSE; |
252b5132 RH |
1756 | case bfd_reloc_overflow: |
1757 | { | |
1758 | const char *name; | |
1759 | char buf[SYMNMLEN + 1]; | |
1760 | ||
1761 | if (symndx == -1) | |
1762 | name = "*ABS*"; | |
1763 | else if (h != NULL) | |
dfeffb9f | 1764 | name = NULL; |
252b5132 RH |
1765 | else |
1766 | { | |
1767 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
1768 | if (name == NULL) | |
b34976b6 | 1769 | return FALSE; |
252b5132 RH |
1770 | } |
1771 | ||
1a72702b AM |
1772 | (*info->callbacks->reloc_overflow) |
1773 | (info, (h ? &h->root : NULL), name, howto->name, | |
1774 | (bfd_vma) 0, input_bfd, input_section, | |
1775 | rel->r_vaddr - input_section->vma); | |
252b5132 RH |
1776 | } |
1777 | } | |
1778 | } | |
1779 | ||
b34976b6 | 1780 | return TRUE; |
252b5132 RH |
1781 | } |
1782 | ||
e049a0de ILT |
1783 | #ifndef COFF_IMAGE_WITH_PE |
1784 | ||
b34976b6 | 1785 | bfd_boolean |
c8e7bf0d | 1786 | bfd_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 | 1787 | { |
07d6d2b8 AM |
1788 | asection * s; |
1789 | bfd_byte * foo; | |
252b5132 | 1790 | struct coff_arm_link_hash_table * globals; |
252b5132 RH |
1791 | |
1792 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1793 | |
252b5132 RH |
1794 | BFD_ASSERT (globals != NULL); |
1795 | ||
1796 | if (globals->arm_glue_size != 0) | |
1797 | { | |
1798 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1799 | |
252b5132 RH |
1800 | s = bfd_get_section_by_name |
1801 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1802 | ||
1803 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1804 | |
c8e7bf0d | 1805 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
d70910e8 | 1806 | |
eea6121a | 1807 | s->size = globals->arm_glue_size; |
252b5132 RH |
1808 | s->contents = foo; |
1809 | } | |
1810 | ||
1811 | if (globals->thumb_glue_size != 0) | |
1812 | { | |
1813 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1814 | |
252b5132 RH |
1815 | s = bfd_get_section_by_name |
1816 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1817 | ||
1818 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1819 | |
c8e7bf0d | 1820 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
d70910e8 | 1821 | |
eea6121a | 1822 | s->size = globals->thumb_glue_size; |
252b5132 RH |
1823 | s->contents = foo; |
1824 | } | |
1825 | ||
b34976b6 | 1826 | return TRUE; |
252b5132 RH |
1827 | } |
1828 | ||
1829 | static void | |
07d6d2b8 | 1830 | record_arm_to_thumb_glue (struct bfd_link_info * info, |
c8e7bf0d | 1831 | struct coff_link_hash_entry * h) |
252b5132 | 1832 | { |
07d6d2b8 AM |
1833 | const char * name = h->root.root.string; |
1834 | register asection * s; | |
1835 | char * tmp_name; | |
1836 | struct coff_link_hash_entry * myh; | |
1837 | struct bfd_link_hash_entry * bh; | |
252b5132 | 1838 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1839 | bfd_vma val; |
1840 | bfd_size_type amt; | |
252b5132 RH |
1841 | |
1842 | globals = coff_arm_hash_table (info); | |
1843 | ||
1844 | BFD_ASSERT (globals != NULL); | |
1845 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1846 | ||
1847 | s = bfd_get_section_by_name | |
1848 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1849 | ||
1850 | BFD_ASSERT (s != NULL); | |
1851 | ||
dc810e39 | 1852 | amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
c8e7bf0d | 1853 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1854 | |
1855 | BFD_ASSERT (tmp_name); | |
1856 | ||
1857 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1858 | |
252b5132 | 1859 | myh = coff_link_hash_lookup |
b34976b6 | 1860 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1861 | |
252b5132 RH |
1862 | if (myh != NULL) |
1863 | { | |
1864 | free (tmp_name); | |
c8e7bf0d NC |
1865 | /* We've already seen this guy. */ |
1866 | return; | |
252b5132 RH |
1867 | } |
1868 | ||
1869 | /* The only trick here is using globals->arm_glue_size as the value. Even | |
1870 | though the section isn't allocated yet, this is where we will be putting | |
1871 | it. */ | |
14a793b2 | 1872 | bh = NULL; |
dc810e39 | 1873 | val = globals->arm_glue_size + 1; |
252b5132 | 1874 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1875 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1876 | |
252b5132 | 1877 | free (tmp_name); |
d70910e8 | 1878 | |
252b5132 RH |
1879 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; |
1880 | ||
1881 | return; | |
1882 | } | |
1883 | ||
7831a775 | 1884 | #ifndef ARM_WINCE |
252b5132 | 1885 | static void |
07d6d2b8 | 1886 | record_thumb_to_arm_glue (struct bfd_link_info * info, |
c8e7bf0d | 1887 | struct coff_link_hash_entry * h) |
252b5132 | 1888 | { |
07d6d2b8 AM |
1889 | const char * name = h->root.root.string; |
1890 | asection * s; | |
1891 | char * tmp_name; | |
1892 | struct coff_link_hash_entry * myh; | |
1893 | struct bfd_link_hash_entry * bh; | |
252b5132 | 1894 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1895 | bfd_vma val; |
1896 | bfd_size_type amt; | |
252b5132 | 1897 | |
252b5132 | 1898 | globals = coff_arm_hash_table (info); |
d70910e8 | 1899 | |
252b5132 RH |
1900 | BFD_ASSERT (globals != NULL); |
1901 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1902 | ||
1903 | s = bfd_get_section_by_name | |
1904 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1905 | ||
1906 | BFD_ASSERT (s != NULL); | |
1907 | ||
dc810e39 | 1908 | amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; |
c8e7bf0d | 1909 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1910 | |
1911 | BFD_ASSERT (tmp_name); | |
1912 | ||
1913 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1914 | ||
1915 | myh = coff_link_hash_lookup | |
b34976b6 | 1916 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1917 | |
252b5132 RH |
1918 | if (myh != NULL) |
1919 | { | |
1920 | free (tmp_name); | |
c8e7bf0d NC |
1921 | /* We've already seen this guy. */ |
1922 | return; | |
252b5132 RH |
1923 | } |
1924 | ||
14a793b2 | 1925 | bh = NULL; |
dc810e39 | 1926 | val = globals->thumb_glue_size + 1; |
252b5132 | 1927 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1928 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1929 | |
252b5132 | 1930 | /* If we mark it 'thumb', the disassembler will do a better job. */ |
14a793b2 | 1931 | myh = (struct coff_link_hash_entry *) bh; |
96d56e9f | 1932 | myh->symbol_class = C_THUMBEXTFUNC; |
252b5132 RH |
1933 | |
1934 | free (tmp_name); | |
1935 | ||
1936 | /* Allocate another symbol to mark where we switch to arm mode. */ | |
d70910e8 | 1937 | |
252b5132 RH |
1938 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
1939 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
d70910e8 | 1940 | |
dc810e39 | 1941 | amt = strlen (name) + strlen (CHANGE_TO_ARM) + 1; |
c8e7bf0d | 1942 | tmp_name = bfd_malloc (amt); |
d70910e8 | 1943 | |
252b5132 | 1944 | BFD_ASSERT (tmp_name); |
d70910e8 | 1945 | |
252b5132 RH |
1946 | sprintf (tmp_name, globals->support_old_code ? BACK_FROM_ARM : CHANGE_TO_ARM, name); |
1947 | ||
14a793b2 | 1948 | bh = NULL; |
dc810e39 | 1949 | val = globals->thumb_glue_size + (globals->support_old_code ? 8 : 4); |
252b5132 | 1950 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1951 | BSF_LOCAL, s, val, NULL, TRUE, FALSE, &bh); |
252b5132 | 1952 | |
d70910e8 KH |
1953 | free (tmp_name); |
1954 | ||
252b5132 RH |
1955 | globals->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
1956 | ||
1957 | return; | |
1958 | } | |
7831a775 | 1959 | #endif /* not ARM_WINCE */ |
252b5132 RH |
1960 | |
1961 | /* Select a BFD to be used to hold the sections used by the glue code. | |
1962 | This function is called from the linker scripts in ld/emultempl/ | |
1963 | {armcoff/pe}.em */ | |
e049a0de | 1964 | |
b34976b6 | 1965 | bfd_boolean |
07d6d2b8 | 1966 | bfd_arm_get_bfd_for_interworking (bfd * abfd, |
c8e7bf0d | 1967 | struct bfd_link_info * info) |
252b5132 RH |
1968 | { |
1969 | struct coff_arm_link_hash_table * globals; | |
07d6d2b8 AM |
1970 | flagword flags; |
1971 | asection * sec; | |
d70910e8 | 1972 | |
252b5132 RH |
1973 | /* If we are only performing a partial link do not bother |
1974 | getting a bfd to hold the glue. */ | |
0e1862bb | 1975 | if (bfd_link_relocatable (info)) |
b34976b6 | 1976 | return TRUE; |
d70910e8 | 1977 | |
252b5132 | 1978 | globals = coff_arm_hash_table (info); |
d70910e8 | 1979 | |
252b5132 RH |
1980 | BFD_ASSERT (globals != NULL); |
1981 | ||
1982 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 1983 | return TRUE; |
d70910e8 | 1984 | |
252b5132 | 1985 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
d70910e8 KH |
1986 | |
1987 | if (sec == NULL) | |
252b5132 | 1988 | { |
117ed4f8 AM |
1989 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1990 | | SEC_CODE | SEC_READONLY); | |
1991 | sec = bfd_make_section_with_flags (abfd, ARM2THUMB_GLUE_SECTION_NAME, | |
1992 | flags); | |
252b5132 | 1993 | if (sec == NULL |
fd361982 | 1994 | || !bfd_set_section_alignment (sec, 2)) |
b34976b6 | 1995 | return FALSE; |
252b5132 RH |
1996 | } |
1997 | ||
1998 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1999 | ||
d70910e8 | 2000 | if (sec == NULL) |
252b5132 | 2001 | { |
117ed4f8 AM |
2002 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2003 | | SEC_CODE | SEC_READONLY); | |
2004 | sec = bfd_make_section_with_flags (abfd, THUMB2ARM_GLUE_SECTION_NAME, | |
2005 | flags); | |
d70910e8 | 2006 | |
252b5132 | 2007 | if (sec == NULL |
fd361982 | 2008 | || !bfd_set_section_alignment (sec, 2)) |
b34976b6 | 2009 | return FALSE; |
252b5132 | 2010 | } |
d70910e8 | 2011 | |
252b5132 RH |
2012 | /* Save the bfd for later use. */ |
2013 | globals->bfd_of_glue_owner = abfd; | |
d70910e8 | 2014 | |
b34976b6 | 2015 | return TRUE; |
252b5132 RH |
2016 | } |
2017 | ||
b34976b6 | 2018 | bfd_boolean |
07d6d2b8 | 2019 | bfd_arm_process_before_allocation (bfd * abfd, |
c8e7bf0d | 2020 | struct bfd_link_info * info, |
07d6d2b8 | 2021 | int support_old_code) |
252b5132 RH |
2022 | { |
2023 | asection * sec; | |
2024 | struct coff_arm_link_hash_table * globals; | |
2025 | ||
2026 | /* If we are only performing a partial link do not bother | |
2027 | to construct any glue. */ | |
0e1862bb | 2028 | if (bfd_link_relocatable (info)) |
b34976b6 | 2029 | return TRUE; |
d70910e8 | 2030 | |
252b5132 RH |
2031 | /* Here we have a bfd that is to be included on the link. We have a hook |
2032 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
2033 | _bfd_coff_get_external_symbols (abfd); |
2034 | ||
2035 | globals = coff_arm_hash_table (info); | |
d70910e8 | 2036 | |
252b5132 RH |
2037 | BFD_ASSERT (globals != NULL); |
2038 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2039 | ||
2040 | globals->support_old_code = support_old_code; | |
d70910e8 | 2041 | |
252b5132 RH |
2042 | /* Rummage around all the relocs and map the glue vectors. */ |
2043 | sec = abfd->sections; | |
2044 | ||
2045 | if (sec == NULL) | |
b34976b6 | 2046 | return TRUE; |
252b5132 RH |
2047 | |
2048 | for (; sec != NULL; sec = sec->next) | |
2049 | { | |
2050 | struct internal_reloc * i; | |
2051 | struct internal_reloc * rel; | |
2052 | ||
d70910e8 | 2053 | if (sec->reloc_count == 0) |
252b5132 RH |
2054 | continue; |
2055 | ||
2056 | /* Load the relocs. */ | |
d70910e8 | 2057 | /* FIXME: there may be a storage leak here. */ |
252b5132 | 2058 | i = _bfd_coff_read_internal_relocs (abfd, sec, 1, 0, 0, 0); |
d70910e8 | 2059 | |
252b5132 RH |
2060 | BFD_ASSERT (i != 0); |
2061 | ||
d70910e8 | 2062 | for (rel = i; rel < i + sec->reloc_count; ++rel) |
252b5132 | 2063 | { |
07d6d2b8 AM |
2064 | unsigned short r_type = rel->r_type; |
2065 | long symndx; | |
2066 | struct coff_link_hash_entry * h; | |
252b5132 RH |
2067 | |
2068 | symndx = rel->r_symndx; | |
2069 | ||
d70910e8 | 2070 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2071 | if (symndx == -1) |
2072 | continue; | |
2073 | ||
17505c5c | 2074 | /* If the index is outside of the range of our table, something has gone wrong. */ |
af74ae99 NC |
2075 | if (symndx >= obj_conv_table_size (abfd)) |
2076 | { | |
695344c0 | 2077 | /* xgettext:c-format */ |
871b3ab2 | 2078 | _bfd_error_handler (_("%pB: illegal symbol index in reloc: %ld"), |
d003868e | 2079 | abfd, symndx); |
af74ae99 NC |
2080 | continue; |
2081 | } | |
d70910e8 | 2082 | |
252b5132 RH |
2083 | h = obj_coff_sym_hashes (abfd)[symndx]; |
2084 | ||
2085 | /* If the relocation is against a static symbol it must be within | |
2086 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2087 | if (h == NULL) | |
2088 | continue; | |
2089 | ||
2090 | switch (r_type) | |
2091 | { | |
2092 | case ARM_26: | |
2093 | /* This one is a call from arm code. We need to look up | |
2094 | the target of the call. If it is a thumb target, we | |
2095 | insert glue. */ | |
d70910e8 | 2096 | |
96d56e9f | 2097 | if (h->symbol_class == C_THUMBEXTFUNC) |
252b5132 RH |
2098 | record_arm_to_thumb_glue (info, h); |
2099 | break; | |
d70910e8 | 2100 | |
17505c5c | 2101 | #ifndef ARM_WINCE |
252b5132 RH |
2102 | case ARM_THUMB23: |
2103 | /* This one is a call from thumb code. We used to look | |
2104 | for ARM_THUMB9 and ARM_THUMB12 as well. We need to look | |
2105 | up the target of the call. If it is an arm target, we | |
2106 | insert glue. If the symbol does not exist it will be | |
2107 | given a class of C_EXT and so we will generate a stub | |
2108 | for it. This is not really a problem, since the link | |
2109 | is doomed anyway. */ | |
2110 | ||
96d56e9f | 2111 | switch (h->symbol_class) |
252b5132 RH |
2112 | { |
2113 | case C_EXT: | |
2114 | case C_STAT: | |
2115 | case C_LABEL: | |
2116 | record_thumb_to_arm_glue (info, h); | |
2117 | break; | |
2118 | default: | |
2119 | ; | |
2120 | } | |
2121 | break; | |
17505c5c | 2122 | #endif |
d70910e8 | 2123 | |
252b5132 RH |
2124 | default: |
2125 | break; | |
2126 | } | |
2127 | } | |
2128 | } | |
2129 | ||
b34976b6 | 2130 | return TRUE; |
252b5132 RH |
2131 | } |
2132 | ||
e049a0de ILT |
2133 | #endif /* ! defined (COFF_IMAGE_WITH_PE) */ |
2134 | ||
07d6d2b8 AM |
2135 | #define coff_bfd_reloc_type_lookup coff_arm_reloc_type_lookup |
2136 | #define coff_bfd_reloc_name_lookup coff_arm_reloc_name_lookup | |
2137 | #define coff_relocate_section coff_arm_relocate_section | |
2138 | #define coff_bfd_is_local_label_name coff_arm_is_local_label_name | |
252b5132 | 2139 | #define coff_adjust_symndx coff_arm_adjust_symndx |
07d6d2b8 | 2140 | #define coff_link_output_has_begun coff_arm_link_output_has_begun |
252b5132 RH |
2141 | #define coff_final_link_postscript coff_arm_final_link_postscript |
2142 | #define coff_bfd_merge_private_bfd_data coff_arm_merge_private_bfd_data | |
2143 | #define coff_bfd_print_private_bfd_data coff_arm_print_private_bfd_data | |
07d6d2b8 AM |
2144 | #define coff_bfd_set_private_flags _bfd_coff_arm_set_private_flags |
2145 | #define coff_bfd_copy_private_bfd_data coff_arm_copy_private_bfd_data | |
252b5132 RH |
2146 | #define coff_bfd_link_hash_table_create coff_arm_link_hash_table_create |
2147 | ||
d21356d8 NC |
2148 | /* When doing a relocatable link, we want to convert ARM_26 relocs |
2149 | into ARM_26D relocs. */ | |
252b5132 | 2150 | |
b34976b6 | 2151 | static bfd_boolean |
c8e7bf0d NC |
2152 | coff_arm_adjust_symndx (bfd *obfd ATTRIBUTE_UNUSED, |
2153 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2154 | bfd *ibfd, | |
2155 | asection *sec, | |
2156 | struct internal_reloc *irel, | |
2157 | bfd_boolean *adjustedp) | |
252b5132 | 2158 | { |
d21356d8 | 2159 | if (irel->r_type == ARM_26) |
252b5132 RH |
2160 | { |
2161 | struct coff_link_hash_entry *h; | |
2162 | ||
2163 | h = obj_coff_sym_hashes (ibfd)[irel->r_symndx]; | |
2164 | if (h != NULL | |
2165 | && (h->root.type == bfd_link_hash_defined | |
2166 | || h->root.type == bfd_link_hash_defweak) | |
2167 | && h->root.u.def.section->output_section == sec->output_section) | |
d21356d8 | 2168 | irel->r_type = ARM_26D; |
252b5132 | 2169 | } |
b34976b6 AM |
2170 | *adjustedp = FALSE; |
2171 | return TRUE; | |
252b5132 RH |
2172 | } |
2173 | ||
2174 | /* Called when merging the private data areas of two BFDs. | |
2175 | This is important as it allows us to detect if we are | |
2176 | attempting to merge binaries compiled for different ARM | |
5c4491d3 | 2177 | targets, eg different CPUs or different APCS's. */ |
252b5132 | 2178 | |
b34976b6 | 2179 | static bfd_boolean |
50e03d47 | 2180 | coff_arm_merge_private_bfd_data (bfd * ibfd, struct bfd_link_info *info) |
252b5132 | 2181 | { |
50e03d47 | 2182 | bfd *obfd = info->output_bfd; |
252b5132 RH |
2183 | BFD_ASSERT (ibfd != NULL && obfd != NULL); |
2184 | ||
2185 | if (ibfd == obfd) | |
b34976b6 | 2186 | return TRUE; |
252b5132 RH |
2187 | |
2188 | /* If the two formats are different we cannot merge anything. | |
2189 | This is not an error, since it is permissable to change the | |
2190 | input and output formats. */ | |
2191 | if ( ibfd->xvec->flavour != bfd_target_coff_flavour | |
2192 | || obfd->xvec->flavour != bfd_target_coff_flavour) | |
b34976b6 | 2193 | return TRUE; |
252b5132 | 2194 | |
5a6c6817 NC |
2195 | /* Determine what should happen if the input ARM architecture |
2196 | does not match the output ARM architecture. */ | |
2197 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
2198 | return FALSE; | |
2199 | ||
2200 | /* Verify that the APCS is the same for the two BFDs. */ | |
252b5132 RH |
2201 | if (APCS_SET (ibfd)) |
2202 | { | |
2203 | if (APCS_SET (obfd)) | |
2204 | { | |
2205 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2206 | if (APCS_26_FLAG (obfd) != APCS_26_FLAG (ibfd)) | |
2207 | { | |
2208 | _bfd_error_handler | |
2209 | /* xgettext: c-format */ | |
871b3ab2 | 2210 | (_("error: %pB is compiled for APCS-%d, whereas %pB is compiled for APCS-%d"), |
c08bb8dd AM |
2211 | ibfd, APCS_26_FLAG (ibfd) ? 26 : 32, |
2212 | obfd, APCS_26_FLAG (obfd) ? 26 : 32 | |
252b5132 RH |
2213 | ); |
2214 | ||
2215 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2216 | return FALSE; |
252b5132 | 2217 | } |
d70910e8 | 2218 | |
252b5132 RH |
2219 | if (APCS_FLOAT_FLAG (obfd) != APCS_FLOAT_FLAG (ibfd)) |
2220 | { | |
252b5132 RH |
2221 | if (APCS_FLOAT_FLAG (ibfd)) |
2222 | /* xgettext: c-format */ | |
695344c0 | 2223 | _bfd_error_handler (_("\ |
871b3ab2 | 2224 | error: %pB passes floats in float registers, whereas %pB passes them in integer registers"), |
695344c0 | 2225 | ibfd, obfd); |
252b5132 RH |
2226 | else |
2227 | /* xgettext: c-format */ | |
695344c0 | 2228 | _bfd_error_handler (_("\ |
871b3ab2 | 2229 | error: %pB passes floats in integer registers, whereas %pB passes them in float registers"), |
695344c0 | 2230 | ibfd, obfd); |
252b5132 RH |
2231 | |
2232 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2233 | return FALSE; |
252b5132 | 2234 | } |
d70910e8 | 2235 | |
252b5132 RH |
2236 | if (PIC_FLAG (obfd) != PIC_FLAG (ibfd)) |
2237 | { | |
252b5132 RH |
2238 | if (PIC_FLAG (ibfd)) |
2239 | /* xgettext: c-format */ | |
695344c0 | 2240 | _bfd_error_handler (_("\ |
871b3ab2 | 2241 | error: %pB is compiled as position independent code, whereas target %pB is absolute position"), |
07d6d2b8 | 2242 | ibfd, obfd); |
252b5132 RH |
2243 | else |
2244 | /* xgettext: c-format */ | |
695344c0 | 2245 | _bfd_error_handler (_("\ |
871b3ab2 | 2246 | error: %pB is compiled as absolute position code, whereas target %pB is position independent"), |
07d6d2b8 | 2247 | ibfd, obfd); |
252b5132 RH |
2248 | |
2249 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2250 | return FALSE; |
252b5132 RH |
2251 | } |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | SET_APCS_FLAGS (obfd, APCS_26_FLAG (ibfd) | APCS_FLOAT_FLAG (ibfd) | PIC_FLAG (ibfd)); | |
d70910e8 | 2256 | |
252b5132 RH |
2257 | /* Set up the arch and fields as well as these are probably wrong. */ |
2258 | bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
2259 | } | |
2260 | } | |
2261 | ||
2262 | /* Check the interworking support. */ | |
2263 | if (INTERWORK_SET (ibfd)) | |
2264 | { | |
2265 | if (INTERWORK_SET (obfd)) | |
2266 | { | |
2267 | /* If the src and dest differ in their interworking issue a warning. */ | |
2268 | if (INTERWORK_FLAG (obfd) != INTERWORK_FLAG (ibfd)) | |
2269 | { | |
252b5132 RH |
2270 | if (INTERWORK_FLAG (ibfd)) |
2271 | /* xgettext: c-format */ | |
695344c0 | 2272 | _bfd_error_handler (_("\ |
59d08d6c | 2273 | warning: %pB supports interworking, whereas %pB does not"), |
695344c0 | 2274 | ibfd, obfd); |
252b5132 RH |
2275 | else |
2276 | /* xgettext: c-format */ | |
695344c0 | 2277 | _bfd_error_handler (_("\ |
59d08d6c | 2278 | warning: %pB does not support interworking, whereas %pB does"), |
695344c0 | 2279 | ibfd, obfd); |
252b5132 RH |
2280 | } |
2281 | } | |
2282 | else | |
2283 | { | |
2284 | SET_INTERWORK_FLAG (obfd, INTERWORK_FLAG (ibfd)); | |
2285 | } | |
2286 | } | |
2287 | ||
b34976b6 | 2288 | return TRUE; |
252b5132 RH |
2289 | } |
2290 | ||
252b5132 RH |
2291 | /* Display the flags field. */ |
2292 | ||
b34976b6 | 2293 | static bfd_boolean |
c8e7bf0d | 2294 | coff_arm_print_private_bfd_data (bfd * abfd, void * ptr) |
252b5132 RH |
2295 | { |
2296 | FILE * file = (FILE *) ptr; | |
d70910e8 | 2297 | |
252b5132 | 2298 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
d70910e8 | 2299 | |
252b5132 | 2300 | fprintf (file, _("private flags = %x:"), coff_data (abfd)->flags); |
d70910e8 | 2301 | |
252b5132 RH |
2302 | if (APCS_SET (abfd)) |
2303 | { | |
5c4491d3 | 2304 | /* xgettext: APCS is ARM Procedure Call Standard, it should not be translated. */ |
252b5132 RH |
2305 | fprintf (file, " [APCS-%d]", APCS_26_FLAG (abfd) ? 26 : 32); |
2306 | ||
2307 | if (APCS_FLOAT_FLAG (abfd)) | |
2308 | fprintf (file, _(" [floats passed in float registers]")); | |
2309 | else | |
2310 | fprintf (file, _(" [floats passed in integer registers]")); | |
2311 | ||
2312 | if (PIC_FLAG (abfd)) | |
2313 | fprintf (file, _(" [position independent]")); | |
2314 | else | |
2315 | fprintf (file, _(" [absolute position]")); | |
2316 | } | |
d70910e8 | 2317 | |
252b5132 RH |
2318 | if (! INTERWORK_SET (abfd)) |
2319 | fprintf (file, _(" [interworking flag not initialised]")); | |
2320 | else if (INTERWORK_FLAG (abfd)) | |
2321 | fprintf (file, _(" [interworking supported]")); | |
2322 | else | |
2323 | fprintf (file, _(" [interworking not supported]")); | |
d70910e8 | 2324 | |
252b5132 | 2325 | fputc ('\n', file); |
d70910e8 | 2326 | |
b34976b6 | 2327 | return TRUE; |
252b5132 RH |
2328 | } |
2329 | ||
252b5132 RH |
2330 | /* Copies the given flags into the coff_tdata.flags field. |
2331 | Typically these flags come from the f_flags[] field of | |
2332 | the COFF filehdr structure, which contains important, | |
2333 | target specific information. | |
2334 | Note: Although this function is static, it is explicitly | |
2335 | called from both coffcode.h and peicode.h. */ | |
2336 | ||
b34976b6 | 2337 | static bfd_boolean |
c8e7bf0d | 2338 | _bfd_coff_arm_set_private_flags (bfd * abfd, flagword flags) |
252b5132 RH |
2339 | { |
2340 | flagword flag; | |
2341 | ||
2342 | BFD_ASSERT (abfd != NULL); | |
2343 | ||
2344 | flag = (flags & F_APCS26) ? F_APCS_26 : 0; | |
d70910e8 | 2345 | |
252b5132 RH |
2346 | /* Make sure that the APCS field has not been initialised to the opposite |
2347 | value. */ | |
2348 | if (APCS_SET (abfd) | |
2349 | && ( (APCS_26_FLAG (abfd) != flag) | |
2350 | || (APCS_FLOAT_FLAG (abfd) != (flags & F_APCS_FLOAT)) | |
07d6d2b8 | 2351 | || (PIC_FLAG (abfd) != (flags & F_PIC)) |
252b5132 | 2352 | )) |
b34976b6 | 2353 | return FALSE; |
252b5132 RH |
2354 | |
2355 | flag |= (flags & (F_APCS_FLOAT | F_PIC)); | |
d70910e8 | 2356 | |
252b5132 RH |
2357 | SET_APCS_FLAGS (abfd, flag); |
2358 | ||
2359 | flag = (flags & F_INTERWORK); | |
d70910e8 | 2360 | |
252b5132 RH |
2361 | /* If the BFD has already had its interworking flag set, but it |
2362 | is different from the value that we have been asked to set, | |
2363 | then assume that that merged code will not support interworking | |
2364 | and set the flag accordingly. */ | |
2365 | if (INTERWORK_SET (abfd) && (INTERWORK_FLAG (abfd) != flag)) | |
2366 | { | |
2367 | if (flag) | |
59d08d6c | 2368 | _bfd_error_handler (_("warning: not setting interworking flag of %pB since it has already been specified as non-interworking"), |
d003868e | 2369 | abfd); |
252b5132 | 2370 | else |
59d08d6c | 2371 | _bfd_error_handler (_("warning: clearing the interworking flag of %pB due to outside request"), |
d003868e | 2372 | abfd); |
252b5132 RH |
2373 | flag = 0; |
2374 | } | |
2375 | ||
2376 | SET_INTERWORK_FLAG (abfd, flag); | |
2377 | ||
b34976b6 | 2378 | return TRUE; |
252b5132 RH |
2379 | } |
2380 | ||
252b5132 RH |
2381 | /* Copy the important parts of the target specific data |
2382 | from one instance of a BFD to another. */ | |
2383 | ||
b34976b6 | 2384 | static bfd_boolean |
c8e7bf0d | 2385 | coff_arm_copy_private_bfd_data (bfd * src, bfd * dest) |
252b5132 RH |
2386 | { |
2387 | BFD_ASSERT (src != NULL && dest != NULL); | |
d70910e8 | 2388 | |
252b5132 | 2389 | if (src == dest) |
b34976b6 | 2390 | return TRUE; |
252b5132 RH |
2391 | |
2392 | /* If the destination is not in the same format as the source, do not do | |
2393 | the copy. */ | |
2394 | if (src->xvec != dest->xvec) | |
b34976b6 | 2395 | return TRUE; |
252b5132 | 2396 | |
c8e7bf0d | 2397 | /* Copy the flags field. */ |
252b5132 RH |
2398 | if (APCS_SET (src)) |
2399 | { | |
2400 | if (APCS_SET (dest)) | |
2401 | { | |
2402 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2403 | if (APCS_26_FLAG (dest) != APCS_26_FLAG (src)) | |
b34976b6 | 2404 | return FALSE; |
d70910e8 | 2405 | |
252b5132 | 2406 | if (APCS_FLOAT_FLAG (dest) != APCS_FLOAT_FLAG (src)) |
b34976b6 | 2407 | return FALSE; |
d70910e8 | 2408 | |
252b5132 | 2409 | if (PIC_FLAG (dest) != PIC_FLAG (src)) |
b34976b6 | 2410 | return FALSE; |
252b5132 RH |
2411 | } |
2412 | else | |
2413 | SET_APCS_FLAGS (dest, APCS_26_FLAG (src) | APCS_FLOAT_FLAG (src) | |
2414 | | PIC_FLAG (src)); | |
2415 | } | |
2416 | ||
2417 | if (INTERWORK_SET (src)) | |
2418 | { | |
2419 | if (INTERWORK_SET (dest)) | |
2420 | { | |
2421 | /* If the src and dest have different interworking flags then turn | |
2422 | off the interworking bit. */ | |
2423 | if (INTERWORK_FLAG (dest) != INTERWORK_FLAG (src)) | |
2424 | { | |
2425 | if (INTERWORK_FLAG (dest)) | |
2426 | { | |
2427 | /* xgettext:c-format */ | |
695344c0 | 2428 | _bfd_error_handler (_("\ |
59d08d6c | 2429 | warning: clearing the interworking flag of %pB because non-interworking code in %pB has been linked with it"), |
d003868e | 2430 | dest, src); |
252b5132 | 2431 | } |
d70910e8 | 2432 | |
252b5132 RH |
2433 | SET_INTERWORK_FLAG (dest, 0); |
2434 | } | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | SET_INTERWORK_FLAG (dest, INTERWORK_FLAG (src)); | |
2439 | } | |
2440 | } | |
2441 | ||
b34976b6 | 2442 | return TRUE; |
252b5132 RH |
2443 | } |
2444 | ||
2445 | /* Note: the definitions here of LOCAL_LABEL_PREFIX and USER_LABEL_PREIFX | |
c31c1f70 | 2446 | *must* match the definitions in gcc/config/arm/{coff|semi|aout}.h. */ |
d66dff94 | 2447 | #ifndef LOCAL_LABEL_PREFIX |
c31c1f70 | 2448 | #define LOCAL_LABEL_PREFIX "" |
d66dff94 | 2449 | #endif |
252b5132 RH |
2450 | #ifndef USER_LABEL_PREFIX |
2451 | #define USER_LABEL_PREFIX "_" | |
2452 | #endif | |
2453 | ||
f8111282 NC |
2454 | /* Like _bfd_coff_is_local_label_name, but |
2455 | a) test against USER_LABEL_PREFIX, to avoid stripping labels known to be | |
2456 | non-local. | |
2457 | b) Allow other prefixes than ".", e.g. an empty prefix would cause all | |
2458 | labels of the form Lxxx to be stripped. */ | |
c8e7bf0d | 2459 | |
b34976b6 | 2460 | static bfd_boolean |
07d6d2b8 | 2461 | coff_arm_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED, |
c8e7bf0d | 2462 | const char * name) |
252b5132 | 2463 | { |
252b5132 RH |
2464 | #ifdef USER_LABEL_PREFIX |
2465 | if (USER_LABEL_PREFIX[0] != 0) | |
2466 | { | |
5ff625e9 AM |
2467 | size_t len = strlen (USER_LABEL_PREFIX); |
2468 | ||
2469 | if (strncmp (name, USER_LABEL_PREFIX, len) == 0) | |
b34976b6 | 2470 | return FALSE; |
252b5132 RH |
2471 | } |
2472 | #endif | |
f8111282 NC |
2473 | |
2474 | #ifdef LOCAL_LABEL_PREFIX | |
2475 | /* If there is a prefix for local labels then look for this. | |
d70910e8 KH |
2476 | If the prefix exists, but it is empty, then ignore the test. */ |
2477 | ||
f8111282 | 2478 | if (LOCAL_LABEL_PREFIX[0] != 0) |
252b5132 | 2479 | { |
dc810e39 | 2480 | size_t len = strlen (LOCAL_LABEL_PREFIX); |
d70910e8 | 2481 | |
f8111282 | 2482 | if (strncmp (name, LOCAL_LABEL_PREFIX, len) != 0) |
b34976b6 | 2483 | return FALSE; |
d70910e8 | 2484 | |
f8111282 NC |
2485 | /* Perform the checks below for the rest of the name. */ |
2486 | name += len; | |
252b5132 | 2487 | } |
f8111282 | 2488 | #endif |
d70910e8 | 2489 | |
f8111282 | 2490 | return name[0] == 'L'; |
252b5132 RH |
2491 | } |
2492 | ||
2493 | /* This piece of machinery exists only to guarantee that the bfd that holds | |
d70910e8 | 2494 | the glue section is written last. |
252b5132 RH |
2495 | |
2496 | This does depend on bfd_make_section attaching a new section to the | |
c8e7bf0d | 2497 | end of the section list for the bfd. */ |
252b5132 | 2498 | |
b34976b6 | 2499 | static bfd_boolean |
c8e7bf0d | 2500 | coff_arm_link_output_has_begun (bfd * sub, struct coff_final_link_info * info) |
252b5132 RH |
2501 | { |
2502 | return (sub->output_has_begun | |
2503 | || sub == coff_arm_hash_table (info->info)->bfd_of_glue_owner); | |
2504 | } | |
2505 | ||
b34976b6 | 2506 | static bfd_boolean |
c8e7bf0d NC |
2507 | coff_arm_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED, |
2508 | struct coff_final_link_info * pfinfo) | |
252b5132 RH |
2509 | { |
2510 | struct coff_arm_link_hash_table * globals; | |
2511 | ||
2512 | globals = coff_arm_hash_table (pfinfo->info); | |
d70910e8 | 2513 | |
252b5132 | 2514 | BFD_ASSERT (globals != NULL); |
d70910e8 | 2515 | |
252b5132 RH |
2516 | if (globals->bfd_of_glue_owner != NULL) |
2517 | { | |
2518 | if (! _bfd_coff_link_input_bfd (pfinfo, globals->bfd_of_glue_owner)) | |
b34976b6 | 2519 | return FALSE; |
d70910e8 | 2520 | |
b34976b6 | 2521 | globals->bfd_of_glue_owner->output_has_begun = TRUE; |
252b5132 | 2522 | } |
d70910e8 | 2523 | |
5a6c6817 | 2524 | return bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
252b5132 RH |
2525 | } |
2526 | ||
2b5c217d NC |
2527 | #ifndef bfd_pe_print_pdata |
2528 | #define bfd_pe_print_pdata NULL | |
2529 | #endif | |
2530 | ||
252b5132 RH |
2531 | #include "coffcode.h" |
2532 | ||
c3c89269 | 2533 | #ifndef TARGET_LITTLE_SYM |
6d00b590 | 2534 | #define TARGET_LITTLE_SYM arm_coff_le_vec |
252b5132 | 2535 | #endif |
c3c89269 NC |
2536 | #ifndef TARGET_LITTLE_NAME |
2537 | #define TARGET_LITTLE_NAME "coff-arm-little" | |
252b5132 | 2538 | #endif |
c3c89269 | 2539 | #ifndef TARGET_BIG_SYM |
6d00b590 | 2540 | #define TARGET_BIG_SYM arm_coff_be_vec |
252b5132 | 2541 | #endif |
c3c89269 NC |
2542 | #ifndef TARGET_BIG_NAME |
2543 | #define TARGET_BIG_NAME "coff-arm-big" | |
252b5132 | 2544 | #endif |
252b5132 | 2545 | |
c3c89269 NC |
2546 | #ifndef TARGET_UNDERSCORE |
2547 | #define TARGET_UNDERSCORE 0 | |
252b5132 | 2548 | #endif |
c3c89269 | 2549 | |
f78c5281 | 2550 | #ifndef EXTRA_S_FLAGS |
c3c89269 | 2551 | #ifdef COFF_WITH_PE |
20650579 | 2552 | #define EXTRA_S_FLAGS (SEC_CODE | SEC_LINK_ONCE | SEC_LINK_DUPLICATES) |
252b5132 | 2553 | #else |
20650579 | 2554 | #define EXTRA_S_FLAGS SEC_CODE |
252b5132 | 2555 | #endif |
f78c5281 | 2556 | #endif |
252b5132 | 2557 | |
c3c89269 NC |
2558 | /* Forward declaration for use initialising alternative_target field. */ |
2559 | extern const bfd_target TARGET_BIG_SYM ; | |
252b5132 | 2560 | |
c3c89269 | 2561 | /* Target vectors. */ |
3fa78519 SS |
2562 | CREATE_LITTLE_COFF_TARGET_VEC (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_BIG_SYM, COFF_SWAP_TABLE) |
2563 | CREATE_BIG_COFF_TARGET_VEC (TARGET_BIG_SYM, TARGET_BIG_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_LITTLE_SYM, COFF_SWAP_TABLE) |