Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD back-end for ARM COFF files. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
45dfa85a | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
d21356d8 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
d21356d8 NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
d21356d8 | 12 | (at your option) any later version. |
252b5132 | 13 | |
d21356d8 NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
d21356d8 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
252b5132 | 23 | |
252b5132 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
252b5132 | 26 | #include "libbfd.h" |
252b5132 | 27 | #include "coff/arm.h" |
252b5132 RH |
28 | #include "coff/internal.h" |
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 RH |
113 | |
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 | switch (howto->size) | |
120 | { | |
121 | case 0: | |
122 | { | |
123 | char x = bfd_get_8 (abfd, addr); | |
124 | DOIT (x); | |
125 | bfd_put_8 (abfd, x, addr); | |
126 | } | |
127 | break; | |
128 | ||
129 | case 1: | |
130 | { | |
131 | short x = bfd_get_16 (abfd, addr); | |
132 | DOIT (x); | |
dc810e39 | 133 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
134 | } |
135 | break; | |
136 | ||
137 | case 2: | |
138 | { | |
139 | long x = bfd_get_32 (abfd, addr); | |
140 | DOIT (x); | |
dc810e39 | 141 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
142 | } |
143 | break; | |
144 | ||
145 | default: | |
146 | abort (); | |
147 | } | |
148 | } | |
149 | ||
150 | /* Now let bfd_perform_relocation finish everything up. */ | |
151 | return bfd_reloc_continue; | |
152 | } | |
153 | ||
154 | /* If USER_LABEL_PREFIX is defined as "_" (see coff_arm_is_local_label_name() | |
155 | in this file), then TARGET_UNDERSCORE should be defined, otherwise it | |
156 | should not. */ | |
157 | #ifndef TARGET_UNDERSCORE | |
158 | #define TARGET_UNDERSCORE '_' | |
159 | #endif | |
160 | ||
161 | #ifndef PCRELOFFSET | |
b34976b6 | 162 | #define PCRELOFFSET TRUE |
252b5132 RH |
163 | #endif |
164 | ||
165 | /* These most certainly belong somewhere else. Just had to get rid of | |
17505c5c | 166 | the manifest constants in the code. */ |
7148cc28 NC |
167 | |
168 | #ifdef ARM_WINCE | |
169 | ||
170 | #define ARM_26D 0 | |
171 | #define ARM_32 1 | |
172 | #define ARM_RVA32 2 | |
173 | #define ARM_26 3 | |
174 | #define ARM_THUMB12 4 | |
175 | #define ARM_SECTION 14 | |
176 | #define ARM_SECREL 15 | |
177 | ||
178 | #else | |
179 | ||
252b5132 RH |
180 | #define ARM_8 0 |
181 | #define ARM_16 1 | |
182 | #define ARM_32 2 | |
183 | #define ARM_26 3 | |
184 | #define ARM_DISP8 4 | |
185 | #define ARM_DISP16 5 | |
186 | #define ARM_DISP32 6 | |
187 | #define ARM_26D 7 | |
c8e7bf0d | 188 | /* 8 is unused. */ |
252b5132 RH |
189 | #define ARM_NEG16 9 |
190 | #define ARM_NEG32 10 | |
191 | #define ARM_RVA32 11 | |
192 | #define ARM_THUMB9 12 | |
193 | #define ARM_THUMB12 13 | |
194 | #define ARM_THUMB23 14 | |
195 | ||
17505c5c NC |
196 | #endif |
197 | ||
c8e7bf0d NC |
198 | static bfd_reloc_status_type aoutarm_fix_pcrel_26_done |
199 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
200 | static bfd_reloc_status_type aoutarm_fix_pcrel_26 | |
201 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
c8e7bf0d NC |
202 | static bfd_reloc_status_type coff_thumb_pcrel_12 |
203 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
204 | #ifndef ARM_WINCE | |
afe94956 NC |
205 | static bfd_reloc_status_type coff_thumb_pcrel_9 |
206 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
c8e7bf0d NC |
207 | static bfd_reloc_status_type coff_thumb_pcrel_23 |
208 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
209 | #endif | |
210 | ||
d70910e8 | 211 | static reloc_howto_type aoutarm_std_reloc_howto[] = |
917583ad | 212 | { |
17505c5c | 213 | #ifdef ARM_WINCE |
d3793eaa NC |
214 | HOWTO (ARM_26D, |
215 | 2, | |
216 | 2, | |
217 | 24, | |
44e88952 | 218 | TRUE, |
d3793eaa NC |
219 | 0, |
220 | complain_overflow_dont, | |
221 | aoutarm_fix_pcrel_26_done, | |
222 | "ARM_26D", | |
53baae48 | 223 | TRUE, /* partial_inplace. */ |
d3793eaa NC |
224 | 0x00ffffff, |
225 | 0x0, | |
44e88952 | 226 | PCRELOFFSET), |
917583ad NC |
227 | HOWTO (ARM_32, |
228 | 0, | |
229 | 2, | |
230 | 32, | |
b34976b6 | 231 | FALSE, |
917583ad NC |
232 | 0, |
233 | complain_overflow_bitfield, | |
234 | coff_arm_reloc, | |
235 | "ARM_32", | |
53baae48 | 236 | TRUE, /* partial_inplace. */ |
917583ad NC |
237 | 0xffffffff, |
238 | 0xffffffff, | |
239 | PCRELOFFSET), | |
240 | HOWTO (ARM_RVA32, | |
241 | 0, | |
242 | 2, | |
243 | 32, | |
b34976b6 | 244 | FALSE, |
917583ad NC |
245 | 0, |
246 | complain_overflow_bitfield, | |
247 | coff_arm_reloc, | |
248 | "ARM_RVA32", | |
53baae48 | 249 | TRUE, /* partial_inplace. */ |
917583ad NC |
250 | 0xffffffff, |
251 | 0xffffffff, | |
252 | PCRELOFFSET), | |
253 | HOWTO (ARM_26, | |
254 | 2, | |
255 | 2, | |
256 | 24, | |
b34976b6 | 257 | TRUE, |
917583ad NC |
258 | 0, |
259 | complain_overflow_signed, | |
260 | aoutarm_fix_pcrel_26 , | |
261 | "ARM_26", | |
b34976b6 | 262 | FALSE, |
917583ad NC |
263 | 0x00ffffff, |
264 | 0x00ffffff, | |
265 | PCRELOFFSET), | |
266 | HOWTO (ARM_THUMB12, | |
267 | 1, | |
268 | 1, | |
269 | 11, | |
b34976b6 | 270 | TRUE, |
917583ad NC |
271 | 0, |
272 | complain_overflow_signed, | |
273 | coff_thumb_pcrel_12 , | |
274 | "ARM_THUMB12", | |
b34976b6 | 275 | FALSE, |
917583ad NC |
276 | 0x000007ff, |
277 | 0x000007ff, | |
278 | PCRELOFFSET), | |
d3793eaa | 279 | EMPTY_HOWTO (-1), |
917583ad NC |
280 | EMPTY_HOWTO (-1), |
281 | EMPTY_HOWTO (-1), | |
282 | EMPTY_HOWTO (-1), | |
283 | EMPTY_HOWTO (-1), | |
284 | EMPTY_HOWTO (-1), | |
285 | EMPTY_HOWTO (-1), | |
286 | EMPTY_HOWTO (-1), | |
287 | EMPTY_HOWTO (-1), | |
288 | HOWTO (ARM_SECTION, | |
289 | 0, | |
290 | 1, | |
291 | 16, | |
b34976b6 | 292 | FALSE, |
917583ad NC |
293 | 0, |
294 | complain_overflow_bitfield, | |
295 | coff_arm_reloc, | |
d3793eaa | 296 | "ARM_SECTION", |
53baae48 | 297 | TRUE, /* partial_inplace. */ |
917583ad NC |
298 | 0x0000ffff, |
299 | 0x0000ffff, | |
300 | PCRELOFFSET), | |
301 | HOWTO (ARM_SECREL, | |
302 | 0, | |
303 | 2, | |
304 | 32, | |
b34976b6 | 305 | FALSE, |
917583ad NC |
306 | 0, |
307 | complain_overflow_bitfield, | |
308 | coff_arm_reloc, | |
d3793eaa | 309 | "ARM_SECREL", |
53baae48 | 310 | TRUE, /* partial_inplace. */ |
917583ad NC |
311 | 0xffffffff, |
312 | 0xffffffff, | |
313 | PCRELOFFSET), | |
17505c5c | 314 | #else /* not ARM_WINCE */ |
c8e7bf0d NC |
315 | HOWTO (ARM_8, |
316 | 0, | |
317 | 0, | |
318 | 8, | |
319 | FALSE, | |
320 | 0, | |
321 | complain_overflow_bitfield, | |
322 | coff_arm_reloc, | |
323 | "ARM_8", | |
324 | TRUE, | |
325 | 0x000000ff, | |
326 | 0x000000ff, | |
327 | PCRELOFFSET), | |
917583ad NC |
328 | HOWTO (ARM_16, |
329 | 0, | |
330 | 1, | |
331 | 16, | |
b34976b6 | 332 | FALSE, |
917583ad NC |
333 | 0, |
334 | complain_overflow_bitfield, | |
335 | coff_arm_reloc, | |
336 | "ARM_16", | |
b34976b6 | 337 | TRUE, |
917583ad NC |
338 | 0x0000ffff, |
339 | 0x0000ffff, | |
340 | PCRELOFFSET), | |
341 | HOWTO (ARM_32, | |
342 | 0, | |
343 | 2, | |
344 | 32, | |
b34976b6 | 345 | FALSE, |
917583ad NC |
346 | 0, |
347 | complain_overflow_bitfield, | |
348 | coff_arm_reloc, | |
349 | "ARM_32", | |
b34976b6 | 350 | TRUE, |
917583ad NC |
351 | 0xffffffff, |
352 | 0xffffffff, | |
353 | PCRELOFFSET), | |
354 | HOWTO (ARM_26, | |
355 | 2, | |
356 | 2, | |
357 | 24, | |
b34976b6 | 358 | TRUE, |
917583ad NC |
359 | 0, |
360 | complain_overflow_signed, | |
361 | aoutarm_fix_pcrel_26 , | |
362 | "ARM_26", | |
b34976b6 | 363 | FALSE, |
917583ad NC |
364 | 0x00ffffff, |
365 | 0x00ffffff, | |
366 | PCRELOFFSET), | |
367 | HOWTO (ARM_DISP8, | |
368 | 0, | |
369 | 0, | |
370 | 8, | |
b34976b6 | 371 | TRUE, |
917583ad NC |
372 | 0, |
373 | complain_overflow_signed, | |
374 | coff_arm_reloc, | |
375 | "ARM_DISP8", | |
b34976b6 | 376 | TRUE, |
917583ad NC |
377 | 0x000000ff, |
378 | 0x000000ff, | |
b34976b6 | 379 | TRUE), |
917583ad NC |
380 | HOWTO (ARM_DISP16, |
381 | 0, | |
382 | 1, | |
383 | 16, | |
b34976b6 | 384 | TRUE, |
917583ad NC |
385 | 0, |
386 | complain_overflow_signed, | |
387 | coff_arm_reloc, | |
388 | "ARM_DISP16", | |
b34976b6 | 389 | TRUE, |
917583ad NC |
390 | 0x0000ffff, |
391 | 0x0000ffff, | |
b34976b6 | 392 | TRUE), |
917583ad NC |
393 | HOWTO (ARM_DISP32, |
394 | 0, | |
395 | 2, | |
396 | 32, | |
b34976b6 | 397 | TRUE, |
917583ad NC |
398 | 0, |
399 | complain_overflow_signed, | |
400 | coff_arm_reloc, | |
401 | "ARM_DISP32", | |
b34976b6 | 402 | TRUE, |
917583ad NC |
403 | 0xffffffff, |
404 | 0xffffffff, | |
b34976b6 | 405 | TRUE), |
917583ad NC |
406 | HOWTO (ARM_26D, |
407 | 2, | |
408 | 2, | |
409 | 24, | |
b34976b6 | 410 | FALSE, |
917583ad NC |
411 | 0, |
412 | complain_overflow_dont, | |
413 | aoutarm_fix_pcrel_26_done, | |
414 | "ARM_26D", | |
b34976b6 | 415 | TRUE, |
917583ad NC |
416 | 0x00ffffff, |
417 | 0x0, | |
b34976b6 | 418 | FALSE), |
917583ad NC |
419 | /* 8 is unused */ |
420 | EMPTY_HOWTO (-1), | |
421 | HOWTO (ARM_NEG16, | |
422 | 0, | |
423 | -1, | |
424 | 16, | |
b34976b6 | 425 | FALSE, |
917583ad NC |
426 | 0, |
427 | complain_overflow_bitfield, | |
428 | coff_arm_reloc, | |
429 | "ARM_NEG16", | |
b34976b6 | 430 | TRUE, |
917583ad NC |
431 | 0x0000ffff, |
432 | 0x0000ffff, | |
b34976b6 | 433 | FALSE), |
917583ad NC |
434 | HOWTO (ARM_NEG32, |
435 | 0, | |
436 | -2, | |
437 | 32, | |
b34976b6 | 438 | FALSE, |
917583ad NC |
439 | 0, |
440 | complain_overflow_bitfield, | |
441 | coff_arm_reloc, | |
442 | "ARM_NEG32", | |
b34976b6 | 443 | TRUE, |
917583ad NC |
444 | 0xffffffff, |
445 | 0xffffffff, | |
b34976b6 | 446 | FALSE), |
917583ad NC |
447 | HOWTO (ARM_RVA32, |
448 | 0, | |
449 | 2, | |
450 | 32, | |
b34976b6 | 451 | FALSE, |
917583ad NC |
452 | 0, |
453 | complain_overflow_bitfield, | |
454 | coff_arm_reloc, | |
455 | "ARM_RVA32", | |
b34976b6 | 456 | TRUE, |
917583ad NC |
457 | 0xffffffff, |
458 | 0xffffffff, | |
459 | PCRELOFFSET), | |
460 | HOWTO (ARM_THUMB9, | |
461 | 1, | |
462 | 1, | |
463 | 8, | |
b34976b6 | 464 | TRUE, |
917583ad NC |
465 | 0, |
466 | complain_overflow_signed, | |
467 | coff_thumb_pcrel_9 , | |
468 | "ARM_THUMB9", | |
b34976b6 | 469 | FALSE, |
917583ad NC |
470 | 0x000000ff, |
471 | 0x000000ff, | |
472 | PCRELOFFSET), | |
473 | HOWTO (ARM_THUMB12, | |
474 | 1, | |
475 | 1, | |
476 | 11, | |
b34976b6 | 477 | TRUE, |
917583ad NC |
478 | 0, |
479 | complain_overflow_signed, | |
480 | coff_thumb_pcrel_12 , | |
481 | "ARM_THUMB12", | |
b34976b6 | 482 | FALSE, |
917583ad NC |
483 | 0x000007ff, |
484 | 0x000007ff, | |
485 | PCRELOFFSET), | |
486 | HOWTO (ARM_THUMB23, | |
487 | 1, | |
488 | 2, | |
489 | 22, | |
b34976b6 | 490 | TRUE, |
917583ad NC |
491 | 0, |
492 | complain_overflow_signed, | |
493 | coff_thumb_pcrel_23 , | |
494 | "ARM_THUMB23", | |
b34976b6 | 495 | FALSE, |
917583ad NC |
496 | 0x07ff07ff, |
497 | 0x07ff07ff, | |
498 | PCRELOFFSET) | |
17505c5c | 499 | #endif /* not ARM_WINCE */ |
917583ad | 500 | }; |
252b5132 | 501 | |
af74ae99 NC |
502 | #define NUM_RELOCS NUM_ELEM (aoutarm_std_reloc_howto) |
503 | ||
252b5132 | 504 | #ifdef COFF_WITH_PE |
b34976b6 | 505 | /* Return TRUE if this relocation should |
d70910e8 | 506 | appear in the output .reloc section. */ |
252b5132 | 507 | |
b34976b6 | 508 | static bfd_boolean |
c8e7bf0d NC |
509 | in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, |
510 | reloc_howto_type * howto) | |
252b5132 RH |
511 | { |
512 | return !howto->pc_relative && howto->type != ARM_RVA32; | |
d70910e8 | 513 | } |
252b5132 RH |
514 | #endif |
515 | ||
af74ae99 NC |
516 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
517 | (cache_ptr)->howto = \ | |
518 | (dst)->r_type < NUM_RELOCS \ | |
519 | ? aoutarm_std_reloc_howto + (dst)->r_type \ | |
520 | : NULL | |
252b5132 RH |
521 | |
522 | #define coff_rtype_to_howto coff_arm_rtype_to_howto | |
523 | ||
524 | static reloc_howto_type * | |
c8e7bf0d NC |
525 | coff_arm_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
526 | asection *sec, | |
527 | struct internal_reloc *rel, | |
528 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED, | |
529 | struct internal_syment *sym ATTRIBUTE_UNUSED, | |
530 | bfd_vma *addendp) | |
252b5132 | 531 | { |
af74ae99 | 532 | reloc_howto_type * howto; |
252b5132 | 533 | |
af74ae99 NC |
534 | if (rel->r_type >= NUM_RELOCS) |
535 | return NULL; | |
d70910e8 | 536 | |
252b5132 RH |
537 | howto = aoutarm_std_reloc_howto + rel->r_type; |
538 | ||
539 | if (rel->r_type == ARM_RVA32) | |
17505c5c | 540 | *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
252b5132 | 541 | |
0be038d6 | 542 | #if defined COFF_WITH_PE && defined ARM_WINCE |
f0927246 NC |
543 | if (rel->r_type == ARM_SECREL) |
544 | { | |
545 | bfd_vma osect_vma; | |
546 | ||
547 | if (h && (h->type == bfd_link_hash_defined | |
548 | || h->type == bfd_link_hash_defweak)) | |
549 | osect_vma = h->root.u.def.section->output_section->vma; | |
550 | else | |
551 | { | |
f0927246 NC |
552 | int i; |
553 | ||
554 | /* Sigh, the only way to get the section to offset against | |
555 | is to find it the hard way. */ | |
556 | ||
557 | for (sec = abfd->sections, i = 1; i < sym->n_scnum; i++) | |
558 | sec = sec->next; | |
559 | ||
560 | osect_vma = sec->output_section->vma; | |
561 | } | |
562 | ||
563 | *addendp -= osect_vma; | |
564 | } | |
565 | #endif | |
566 | ||
252b5132 | 567 | return howto; |
252b5132 | 568 | } |
917583ad | 569 | |
d70910e8 | 570 | /* Used by the assembler. */ |
252b5132 RH |
571 | |
572 | static bfd_reloc_status_type | |
c8e7bf0d NC |
573 | aoutarm_fix_pcrel_26_done (bfd *abfd ATTRIBUTE_UNUSED, |
574 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
575 | asymbol *symbol ATTRIBUTE_UNUSED, | |
576 | void * data ATTRIBUTE_UNUSED, | |
577 | asection *input_section ATTRIBUTE_UNUSED, | |
578 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
579 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
580 | { |
581 | /* This is dead simple at present. */ | |
582 | return bfd_reloc_ok; | |
583 | } | |
584 | ||
d70910e8 | 585 | /* Used by the assembler. */ |
252b5132 RH |
586 | |
587 | static bfd_reloc_status_type | |
c8e7bf0d NC |
588 | aoutarm_fix_pcrel_26 (bfd *abfd, |
589 | arelent *reloc_entry, | |
590 | asymbol *symbol, | |
591 | void * data, | |
592 | asection *input_section, | |
593 | bfd *output_bfd, | |
594 | char **error_message ATTRIBUTE_UNUSED) | |
252b5132 RH |
595 | { |
596 | bfd_vma relocation; | |
597 | bfd_size_type addr = reloc_entry->address; | |
598 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
599 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
d70910e8 | 600 | |
917583ad | 601 | /* If this is an undefined symbol, return error. */ |
45dfa85a | 602 | if (bfd_is_und_section (symbol->section) |
252b5132 RH |
603 | && (symbol->flags & BSF_WEAK) == 0) |
604 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
605 | ||
606 | /* If the sections are different, and we are doing a partial relocation, | |
607 | just ignore it for now. */ | |
608 | if (symbol->section->name != input_section->name | |
609 | && output_bfd != (bfd *)NULL) | |
610 | return bfd_reloc_continue; | |
611 | ||
612 | relocation = (target & 0x00ffffff) << 2; | |
917583ad | 613 | relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend. */ |
252b5132 RH |
614 | relocation += symbol->value; |
615 | relocation += symbol->section->output_section->vma; | |
616 | relocation += symbol->section->output_offset; | |
617 | relocation += reloc_entry->addend; | |
618 | relocation -= input_section->output_section->vma; | |
619 | relocation -= input_section->output_offset; | |
620 | relocation -= addr; | |
d70910e8 | 621 | |
252b5132 RH |
622 | if (relocation & 3) |
623 | return bfd_reloc_overflow; | |
624 | ||
917583ad | 625 | /* Check for overflow. */ |
252b5132 RH |
626 | if (relocation & 0x02000000) |
627 | { | |
628 | if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff) | |
629 | flag = bfd_reloc_overflow; | |
630 | } | |
dc810e39 | 631 | else if (relocation & ~(bfd_vma) 0x03ffffff) |
252b5132 RH |
632 | flag = bfd_reloc_overflow; |
633 | ||
634 | target &= ~0x00ffffff; | |
635 | target |= (relocation >> 2) & 0x00ffffff; | |
dc810e39 | 636 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
637 | |
638 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
639 | Strictly this is only necessary if we are doing a partial relocation. */ | |
640 | reloc_entry->howto = &aoutarm_std_reloc_howto[ARM_26D]; | |
641 | ||
642 | return flag; | |
643 | } | |
644 | ||
645 | static bfd_reloc_status_type | |
c8e7bf0d NC |
646 | coff_thumb_pcrel_common (bfd *abfd, |
647 | arelent *reloc_entry, | |
648 | asymbol *symbol, | |
649 | void * data, | |
650 | asection *input_section, | |
651 | bfd *output_bfd, | |
652 | char **error_message ATTRIBUTE_UNUSED, | |
653 | thumb_pcrel_branchtype btype) | |
252b5132 RH |
654 | { |
655 | bfd_vma relocation = 0; | |
656 | bfd_size_type addr = reloc_entry->address; | |
657 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
658 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
659 | bfd_vma dstmsk; | |
660 | bfd_vma offmsk; | |
661 | bfd_vma signbit; | |
662 | ||
663 | /* NOTE: This routine is currently used by GAS, but not by the link | |
664 | phase. */ | |
252b5132 RH |
665 | switch (btype) |
666 | { | |
667 | case b9: | |
668 | dstmsk = 0x000000ff; | |
669 | offmsk = 0x000001fe; | |
670 | signbit = 0x00000100; | |
671 | break; | |
672 | ||
673 | case b12: | |
674 | dstmsk = 0x000007ff; | |
675 | offmsk = 0x00000ffe; | |
676 | signbit = 0x00000800; | |
677 | break; | |
678 | ||
679 | case b23: | |
680 | dstmsk = 0x07ff07ff; | |
681 | offmsk = 0x007fffff; | |
682 | signbit = 0x00400000; | |
683 | break; | |
684 | ||
685 | default: | |
686 | abort (); | |
687 | } | |
d70910e8 | 688 | |
917583ad | 689 | /* If this is an undefined symbol, return error. */ |
45dfa85a | 690 | if (bfd_is_und_section (symbol->section) |
252b5132 RH |
691 | && (symbol->flags & BSF_WEAK) == 0) |
692 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
693 | ||
694 | /* If the sections are different, and we are doing a partial relocation, | |
695 | just ignore it for now. */ | |
696 | if (symbol->section->name != input_section->name | |
697 | && output_bfd != (bfd *)NULL) | |
698 | return bfd_reloc_continue; | |
699 | ||
700 | switch (btype) | |
701 | { | |
702 | case b9: | |
703 | case b12: | |
704 | relocation = ((target & dstmsk) << 1); | |
705 | break; | |
706 | ||
707 | case b23: | |
708 | if (bfd_big_endian (abfd)) | |
709 | relocation = ((target & 0x7ff) << 1) | ((target & 0x07ff0000) >> 4); | |
710 | else | |
711 | relocation = ((target & 0x7ff) << 12) | ((target & 0x07ff0000) >> 15); | |
712 | break; | |
713 | ||
714 | default: | |
715 | abort (); | |
716 | } | |
717 | ||
917583ad | 718 | relocation = (relocation ^ signbit) - signbit; /* Sign extend. */ |
252b5132 RH |
719 | relocation += symbol->value; |
720 | relocation += symbol->section->output_section->vma; | |
721 | relocation += symbol->section->output_offset; | |
722 | relocation += reloc_entry->addend; | |
723 | relocation -= input_section->output_section->vma; | |
724 | relocation -= input_section->output_offset; | |
725 | relocation -= addr; | |
726 | ||
727 | if (relocation & 1) | |
728 | return bfd_reloc_overflow; | |
729 | ||
917583ad | 730 | /* Check for overflow. */ |
252b5132 RH |
731 | if (relocation & signbit) |
732 | { | |
733 | if ((relocation & ~offmsk) != ~offmsk) | |
734 | flag = bfd_reloc_overflow; | |
735 | } | |
736 | else if (relocation & ~offmsk) | |
737 | flag = bfd_reloc_overflow; | |
738 | ||
739 | target &= ~dstmsk; | |
740 | switch (btype) | |
741 | { | |
742 | case b9: | |
743 | case b12: | |
744 | target |= (relocation >> 1); | |
745 | break; | |
746 | ||
747 | case b23: | |
748 | if (bfd_big_endian (abfd)) | |
dc810e39 AM |
749 | target |= (((relocation & 0xfff) >> 1) |
750 | | ((relocation << 4) & 0x07ff0000)); | |
252b5132 | 751 | else |
dc810e39 AM |
752 | target |= (((relocation & 0xffe) << 15) |
753 | | ((relocation >> 12) & 0x7ff)); | |
252b5132 RH |
754 | break; |
755 | ||
756 | default: | |
757 | abort (); | |
758 | } | |
759 | ||
dc810e39 | 760 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
761 | |
762 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
763 | Strictly this is only necessary if we are doing a partial relocation. */ | |
764 | reloc_entry->howto = & aoutarm_std_reloc_howto [ARM_26D]; | |
d70910e8 | 765 | |
917583ad | 766 | /* TODO: We should possibly have DONE entries for the THUMB PCREL relocations. */ |
252b5132 RH |
767 | return flag; |
768 | } | |
769 | ||
7831a775 | 770 | #ifndef ARM_WINCE |
252b5132 | 771 | static bfd_reloc_status_type |
c8e7bf0d NC |
772 | coff_thumb_pcrel_23 (bfd *abfd, |
773 | arelent *reloc_entry, | |
774 | asymbol *symbol, | |
775 | void * data, | |
776 | asection *input_section, | |
777 | bfd *output_bfd, | |
778 | char **error_message) | |
252b5132 RH |
779 | { |
780 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 AM |
781 | input_section, output_bfd, error_message, |
782 | b23); | |
252b5132 RH |
783 | } |
784 | ||
785 | static bfd_reloc_status_type | |
c8e7bf0d NC |
786 | coff_thumb_pcrel_9 (bfd *abfd, |
787 | arelent *reloc_entry, | |
788 | asymbol *symbol, | |
789 | void * data, | |
790 | asection *input_section, | |
791 | bfd *output_bfd, | |
792 | char **error_message) | |
252b5132 RH |
793 | { |
794 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 | 795 | input_section, output_bfd, error_message, |
7831a775 | 796 | b9); |
252b5132 | 797 | } |
7831a775 | 798 | #endif /* not ARM_WINCE */ |
252b5132 RH |
799 | |
800 | static bfd_reloc_status_type | |
c8e7bf0d NC |
801 | coff_thumb_pcrel_12 (bfd *abfd, |
802 | arelent *reloc_entry, | |
803 | asymbol *symbol, | |
804 | void * data, | |
805 | asection *input_section, | |
806 | bfd *output_bfd, | |
807 | char **error_message) | |
252b5132 RH |
808 | { |
809 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 | 810 | input_section, output_bfd, error_message, |
7831a775 | 811 | b12); |
252b5132 RH |
812 | } |
813 | ||
dc810e39 | 814 | static const struct reloc_howto_struct * |
c8e7bf0d | 815 | coff_arm_reloc_type_lookup (bfd * abfd, bfd_reloc_code_real_type code) |
252b5132 | 816 | { |
af74ae99 | 817 | #define ASTD(i,j) case i: return aoutarm_std_reloc_howto + j |
d70910e8 | 818 | |
252b5132 | 819 | if (code == BFD_RELOC_CTOR) |
30d10e9e | 820 | switch (bfd_arch_bits_per_address (abfd)) |
252b5132 RH |
821 | { |
822 | case 32: | |
823 | code = BFD_RELOC_32; | |
824 | break; | |
917583ad | 825 | default: |
c8e7bf0d | 826 | return NULL; |
252b5132 RH |
827 | } |
828 | ||
829 | switch (code) | |
830 | { | |
17505c5c NC |
831 | #ifdef ARM_WINCE |
832 | ASTD (BFD_RELOC_32, ARM_32); | |
833 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
834 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
835 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); | |
f0927246 | 836 | ASTD (BFD_RELOC_32_SECREL, ARM_SECREL); |
17505c5c | 837 | #else |
252b5132 RH |
838 | ASTD (BFD_RELOC_8, ARM_8); |
839 | ASTD (BFD_RELOC_16, ARM_16); | |
840 | ASTD (BFD_RELOC_32, ARM_32); | |
841 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
077b8428 | 842 | ASTD (BFD_RELOC_ARM_PCREL_BLX, ARM_26); |
252b5132 RH |
843 | ASTD (BFD_RELOC_8_PCREL, ARM_DISP8); |
844 | ASTD (BFD_RELOC_16_PCREL, ARM_DISP16); | |
845 | ASTD (BFD_RELOC_32_PCREL, ARM_DISP32); | |
846 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
847 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH9, ARM_THUMB9); | |
848 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); | |
849 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH23, ARM_THUMB23); | |
f8f3c6cc | 850 | ASTD (BFD_RELOC_THUMB_PCREL_BLX, ARM_THUMB23); |
d70910e8 | 851 | #endif |
c8e7bf0d | 852 | default: return NULL; |
252b5132 RH |
853 | } |
854 | } | |
855 | ||
157090f7 AM |
856 | static reloc_howto_type * |
857 | coff_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
858 | const char *r_name) | |
859 | { | |
860 | unsigned int i; | |
861 | ||
862 | for (i = 0; | |
863 | i < (sizeof (aoutarm_std_reloc_howto) | |
864 | / sizeof (aoutarm_std_reloc_howto[0])); | |
865 | i++) | |
866 | if (aoutarm_std_reloc_howto[i].name != NULL | |
867 | && strcasecmp (aoutarm_std_reloc_howto[i].name, r_name) == 0) | |
868 | return &aoutarm_std_reloc_howto[i]; | |
869 | ||
870 | return NULL; | |
871 | } | |
872 | ||
c8e7bf0d NC |
873 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 |
874 | #define COFF_PAGE_SIZE 0x1000 | |
252b5132 | 875 | |
c8e7bf0d | 876 | /* Turn a howto into a reloc nunmber. */ |
252b5132 | 877 | #define SELECT_RELOC(x,howto) { x.r_type = howto->type; } |
c8e7bf0d NC |
878 | #define BADMAG(x) ARMBADMAG(x) |
879 | #define ARM 1 /* Customize coffcode.h. */ | |
252b5132 | 880 | |
7831a775 | 881 | #ifndef ARM_WINCE |
2106126f | 882 | /* Make sure that the 'r_offset' field is copied properly |
830629ab | 883 | so that identical binaries will compare the same. */ |
2106126f NC |
884 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
885 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 | |
7831a775 | 886 | #endif |
2106126f | 887 | |
252b5132 RH |
888 | /* Extend the coff_link_hash_table structure with a few ARM specific fields. |
889 | This allows us to store global data here without actually creating any | |
890 | global variables, which is a no-no in the BFD world. */ | |
891 | struct coff_arm_link_hash_table | |
917583ad NC |
892 | { |
893 | /* The original coff_link_hash_table structure. MUST be first field. */ | |
894 | struct coff_link_hash_table root; | |
d70910e8 | 895 | |
5c4491d3 | 896 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 897 | bfd_size_type thumb_glue_size; |
d70910e8 | 898 | |
5c4491d3 | 899 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 900 | bfd_size_type arm_glue_size; |
252b5132 | 901 | |
5c4491d3 | 902 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 903 | bfd * bfd_of_glue_owner; |
252b5132 | 904 | |
917583ad NC |
905 | /* Support interworking with old, non-interworking aware ARM code. */ |
906 | int support_old_code; | |
252b5132 RH |
907 | }; |
908 | ||
909 | /* Get the ARM coff linker hash table from a link_info structure. */ | |
910 | #define coff_arm_hash_table(info) \ | |
911 | ((struct coff_arm_link_hash_table *) ((info)->hash)) | |
912 | ||
913 | /* Create an ARM coff linker hash table. */ | |
914 | ||
915 | static struct bfd_link_hash_table * | |
c8e7bf0d | 916 | coff_arm_link_hash_table_create (bfd * abfd) |
252b5132 RH |
917 | { |
918 | struct coff_arm_link_hash_table * ret; | |
dc810e39 | 919 | bfd_size_type amt = sizeof (struct coff_arm_link_hash_table); |
252b5132 | 920 | |
7bf52ea2 | 921 | ret = bfd_zmalloc (amt); |
c8e7bf0d | 922 | if (ret == NULL) |
252b5132 RH |
923 | return NULL; |
924 | ||
66eb6687 AM |
925 | if (!_bfd_coff_link_hash_table_init (&ret->root, |
926 | abfd, | |
927 | _bfd_coff_link_hash_newfunc, | |
928 | sizeof (struct coff_link_hash_entry))) | |
252b5132 | 929 | { |
e2d34d7d | 930 | free (ret); |
c8e7bf0d | 931 | return NULL; |
252b5132 RH |
932 | } |
933 | ||
252b5132 RH |
934 | return & ret->root.root; |
935 | } | |
936 | ||
b1657152 | 937 | static bfd_boolean |
c8e7bf0d NC |
938 | arm_emit_base_file_entry (struct bfd_link_info *info, |
939 | bfd *output_bfd, | |
940 | asection *input_section, | |
941 | bfd_vma reloc_offset) | |
252b5132 | 942 | { |
b1657152 AM |
943 | bfd_vma addr = (reloc_offset |
944 | - input_section->vma | |
945 | + input_section->output_offset | |
946 | + input_section->output_section->vma); | |
252b5132 | 947 | |
917583ad NC |
948 | if (coff_data (output_bfd)->pe) |
949 | addr -= pe_data (output_bfd)->pe_opthdr.ImageBase; | |
b1657152 AM |
950 | if (fwrite (&addr, sizeof (addr), 1, (FILE *) info->base_file) == 1) |
951 | return TRUE; | |
252b5132 | 952 | |
b1657152 AM |
953 | bfd_set_error (bfd_error_system_call); |
954 | return FALSE; | |
252b5132 RH |
955 | } |
956 | \f | |
7831a775 | 957 | #ifndef ARM_WINCE |
252b5132 RH |
958 | /* The thumb form of a long branch is a bit finicky, because the offset |
959 | encoding is split over two fields, each in it's own instruction. They | |
d70910e8 | 960 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 961 | offset, insert the offset into the thumb branch and return finished |
d70910e8 | 962 | instruction. |
252b5132 | 963 | |
d70910e8 | 964 | It takes two thumb instructions to encode the target address. Each has |
5c4491d3 | 965 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
d70910e8 KH |
966 | H-0.. see below), the lower 11 bits are stored in the other (identified |
967 | by H-1). | |
252b5132 | 968 | |
d70910e8 | 969 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
970 | there you have it. |
971 | ||
972 | Op: 1111 = F, | |
973 | H-0, upper address-0 = 000 | |
974 | Op: 1111 = F, | |
975 | H-1, lower address-0 = 800 | |
976 | ||
d70910e8 | 977 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
978 | the lower one first. It probably doesn't matter. krk@cygnus.com |
979 | ||
980 | XXX: Actually the order does matter. The second instruction (H-1) | |
981 | moves the computed address into the PC, so it must be the second one | |
982 | in the sequence. The problem, however is that whilst little endian code | |
983 | stores the instructions in HI then LOW order, big endian code does the | |
917583ad | 984 | reverse. nickc@cygnus.com. */ |
252b5132 RH |
985 | |
986 | #define LOW_HI_ORDER 0xF800F000 | |
987 | #define HI_LOW_ORDER 0xF000F800 | |
988 | ||
989 | static insn32 | |
c8e7bf0d | 990 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
991 | { |
992 | unsigned int low_bits; | |
993 | unsigned int high_bits; | |
994 | ||
c8e7bf0d | 995 | BFD_ASSERT ((rel_off & 1) != 1); |
252b5132 | 996 | |
c8e7bf0d NC |
997 | rel_off >>= 1; /* Half word aligned address. */ |
998 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
999 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
1000 | |
1001 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
1002 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
1003 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
1004 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
1005 | else | |
dc810e39 AM |
1006 | /* FIXME: the BFD library should never abort except for internal errors |
1007 | - it should return an error status. */ | |
917583ad | 1008 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 RH |
1009 | |
1010 | return br_insn; | |
1011 | } | |
7831a775 | 1012 | |
252b5132 RH |
1013 | \f |
1014 | static struct coff_link_hash_entry * | |
c8e7bf0d NC |
1015 | find_thumb_glue (struct bfd_link_info *info, |
1016 | const char *name, | |
1017 | bfd *input_bfd) | |
252b5132 | 1018 | { |
dc810e39 AM |
1019 | char *tmp_name; |
1020 | struct coff_link_hash_entry *myh; | |
1021 | bfd_size_type amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; | |
252b5132 | 1022 | |
c8e7bf0d | 1023 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1024 | |
1025 | BFD_ASSERT (tmp_name); | |
1026 | ||
1027 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1028 | |
252b5132 | 1029 | myh = coff_link_hash_lookup |
b34976b6 | 1030 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1031 | |
252b5132 RH |
1032 | if (myh == NULL) |
1033 | /* xgettext:c-format */ | |
d003868e AM |
1034 | _bfd_error_handler (_("%B: unable to find THUMB glue '%s' for `%s'"), |
1035 | input_bfd, tmp_name, name); | |
d70910e8 | 1036 | |
252b5132 RH |
1037 | free (tmp_name); |
1038 | ||
1039 | return myh; | |
1040 | } | |
7831a775 | 1041 | #endif /* not ARM_WINCE */ |
252b5132 RH |
1042 | |
1043 | static struct coff_link_hash_entry * | |
c8e7bf0d NC |
1044 | find_arm_glue (struct bfd_link_info *info, |
1045 | const char *name, | |
1046 | bfd *input_bfd) | |
252b5132 | 1047 | { |
dc810e39 | 1048 | char *tmp_name; |
252b5132 | 1049 | struct coff_link_hash_entry * myh; |
dc810e39 | 1050 | bfd_size_type amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
252b5132 | 1051 | |
c8e7bf0d | 1052 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1053 | |
1054 | BFD_ASSERT (tmp_name); | |
1055 | ||
1056 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1057 | |
252b5132 | 1058 | myh = coff_link_hash_lookup |
b34976b6 | 1059 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1060 | |
1061 | if (myh == NULL) | |
1062 | /* xgettext:c-format */ | |
d003868e AM |
1063 | _bfd_error_handler (_("%B: unable to find ARM glue '%s' for `%s'"), |
1064 | input_bfd, tmp_name, name); | |
d70910e8 | 1065 | |
252b5132 RH |
1066 | free (tmp_name); |
1067 | ||
1068 | return myh; | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | ARM->Thumb glue: | |
1073 | ||
1074 | .arm | |
1075 | __func_from_arm: | |
1076 | ldr r12, __func_addr | |
1077 | bx r12 | |
1078 | __func_addr: | |
1079 | .word func @ behave as if you saw a ARM_32 reloc | |
1080 | */ | |
1081 | ||
1082 | #define ARM2THUMB_GLUE_SIZE 12 | |
1083 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
1084 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
1085 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
1086 | ||
252b5132 RH |
1087 | /* |
1088 | Thumb->ARM: Thumb->(non-interworking aware) ARM | |
1089 | ||
1090 | .thumb .thumb | |
1091 | .align 2 .align 2 | |
1092 | __func_from_thumb: __func_from_thumb: | |
1093 | bx pc push {r6, lr} | |
1094 | nop ldr r6, __func_addr | |
1095 | .arm mov lr, pc | |
1096 | __func_change_to_arm: bx r6 | |
1097 | b func .arm | |
1098 | __func_back_to_thumb: | |
1099 | ldmia r13! {r6, lr} | |
1100 | bx lr | |
1101 | __func_addr: | |
d70910e8 | 1102 | .word func |
252b5132 RH |
1103 | */ |
1104 | ||
1105 | #define THUMB2ARM_GLUE_SIZE (globals->support_old_code ? 20 : 8) | |
2dc773a0 | 1106 | #ifndef ARM_WINCE |
252b5132 RH |
1107 | static const insn16 t2a1_bx_pc_insn = 0x4778; |
1108 | static const insn16 t2a2_noop_insn = 0x46c0; | |
1109 | static const insn32 t2a3_b_insn = 0xea000000; | |
1110 | ||
252b5132 RH |
1111 | static const insn16 t2a1_push_insn = 0xb540; |
1112 | static const insn16 t2a2_ldr_insn = 0x4e03; | |
1113 | static const insn16 t2a3_mov_insn = 0x46fe; | |
1114 | static const insn16 t2a4_bx_insn = 0x4730; | |
1115 | static const insn32 t2a5_pop_insn = 0xe8bd4040; | |
1116 | static const insn32 t2a6_bx_insn = 0xe12fff1e; | |
2dc773a0 | 1117 | #endif |
252b5132 RH |
1118 | |
1119 | /* TODO: | |
1120 | We should really create new local (static) symbols in destination | |
1121 | object for each stub we create. We should also create local | |
1122 | (static) symbols within the stubs when switching between ARM and | |
1123 | Thumb code. This will ensure that the debugger and disassembler | |
1124 | can present a better view of stubs. | |
1125 | ||
1126 | We can treat stubs like literal sections, and for the THUMB9 ones | |
1127 | (short addressing range) we should be able to insert the stubs | |
1128 | between sections. i.e. the simplest approach (since relocations | |
1129 | are done on a section basis) is to dump the stubs at the end of | |
1130 | processing a section. That way we can always try and minimise the | |
1131 | offset to and from a stub. However, this does not map well onto | |
1132 | the way that the linker/BFD does its work: mapping all input | |
1133 | sections to output sections via the linker script before doing | |
1134 | all the processing. | |
1135 | ||
1136 | Unfortunately it may be easier to just to disallow short range | |
1137 | Thumb->ARM stubs (i.e. no conditional inter-working branches, | |
1138 | only branch-and-link (BL) calls. This will simplify the processing | |
1139 | since we can then put all of the stubs into their own section. | |
1140 | ||
1141 | TODO: | |
1142 | On a different subject, rather than complaining when a | |
1143 | branch cannot fit in the number of bits available for the | |
1144 | instruction we should generate a trampoline stub (needed to | |
1145 | address the complete 32bit address space). */ | |
1146 | ||
d70910e8 | 1147 | /* The standard COFF backend linker does not cope with the special |
252b5132 RH |
1148 | Thumb BRANCH23 relocation. The alternative would be to split the |
1149 | BRANCH23 into seperate HI23 and LO23 relocations. However, it is a | |
d70910e8 | 1150 | bit simpler simply providing our own relocation driver. */ |
252b5132 RH |
1151 | |
1152 | /* The reloc processing routine for the ARM/Thumb COFF linker. NOTE: | |
1153 | This code is a very slightly modified copy of | |
1154 | _bfd_coff_generic_relocate_section. It would be a much more | |
1155 | maintainable solution to have a MACRO that could be expanded within | |
1156 | _bfd_coff_generic_relocate_section that would only be provided for | |
1157 | ARM/Thumb builds. It is only the code marked THUMBEXTENSION that | |
1158 | is different from the original. */ | |
1159 | ||
b34976b6 | 1160 | static bfd_boolean |
c8e7bf0d NC |
1161 | coff_arm_relocate_section (bfd *output_bfd, |
1162 | struct bfd_link_info *info, | |
1163 | bfd *input_bfd, | |
1164 | asection *input_section, | |
1165 | bfd_byte *contents, | |
1166 | struct internal_reloc *relocs, | |
1167 | struct internal_syment *syms, | |
1168 | asection **sections) | |
252b5132 RH |
1169 | { |
1170 | struct internal_reloc * rel; | |
1171 | struct internal_reloc * relend; | |
2dc773a0 | 1172 | #ifndef ARM_WINCE |
07515404 | 1173 | bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); |
2dc773a0 | 1174 | #endif |
252b5132 RH |
1175 | |
1176 | rel = relocs; | |
1177 | relend = rel + input_section->reloc_count; | |
1178 | ||
1179 | for (; rel < relend; rel++) | |
1180 | { | |
1181 | int done = 0; | |
1182 | long symndx; | |
1183 | struct coff_link_hash_entry * h; | |
1184 | struct internal_syment * sym; | |
1185 | bfd_vma addend; | |
1186 | bfd_vma val; | |
1187 | reloc_howto_type * howto; | |
1188 | bfd_reloc_status_type rstat; | |
1189 | bfd_vma h_val; | |
1190 | ||
1191 | symndx = rel->r_symndx; | |
1192 | ||
1193 | if (symndx == -1) | |
1194 | { | |
1195 | h = NULL; | |
1196 | sym = NULL; | |
1197 | } | |
1198 | else | |
d70910e8 | 1199 | { |
252b5132 RH |
1200 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
1201 | sym = syms + symndx; | |
1202 | } | |
1203 | ||
1204 | /* COFF treats common symbols in one of two ways. Either the | |
1205 | size of the symbol is included in the section contents, or it | |
1206 | is not. We assume that the size is not included, and force | |
1207 | the rtype_to_howto function to adjust the addend as needed. */ | |
1208 | ||
1209 | if (sym != NULL && sym->n_scnum != 0) | |
1210 | addend = - sym->n_value; | |
1211 | else | |
1212 | addend = 0; | |
1213 | ||
252b5132 RH |
1214 | howto = coff_rtype_to_howto (input_bfd, input_section, rel, h, |
1215 | sym, &addend); | |
1216 | if (howto == NULL) | |
b34976b6 | 1217 | return FALSE; |
252b5132 RH |
1218 | |
1219 | /* The relocation_section function will skip pcrel_offset relocs | |
1049f94e | 1220 | when doing a relocatable link. However, we want to convert |
d21356d8 | 1221 | ARM_26 to ARM_26D relocs if possible. We return a fake howto in |
252b5132 | 1222 | this case without pcrel_offset set, and adjust the addend to |
44e88952 NC |
1223 | compensate. 'partial_inplace' is also set, since we want 'done' |
1224 | relocations to be reflected in section's data. */ | |
252b5132 RH |
1225 | if (rel->r_type == ARM_26 |
1226 | && h != NULL | |
1049f94e | 1227 | && info->relocatable |
252b5132 RH |
1228 | && (h->root.type == bfd_link_hash_defined |
1229 | || h->root.type == bfd_link_hash_defweak) | |
dc810e39 AM |
1230 | && (h->root.u.def.section->output_section |
1231 | == input_section->output_section)) | |
252b5132 | 1232 | { |
d70910e8 | 1233 | static reloc_howto_type fake_arm26_reloc = |
252b5132 RH |
1234 | HOWTO (ARM_26, |
1235 | 2, | |
1236 | 2, | |
1237 | 24, | |
b34976b6 | 1238 | TRUE, |
252b5132 RH |
1239 | 0, |
1240 | complain_overflow_signed, | |
1241 | aoutarm_fix_pcrel_26 , | |
1242 | "ARM_26", | |
44e88952 | 1243 | TRUE, |
252b5132 | 1244 | 0x00ffffff, |
d70910e8 | 1245 | 0x00ffffff, |
b34976b6 | 1246 | FALSE); |
252b5132 RH |
1247 | |
1248 | addend -= rel->r_vaddr - input_section->vma; | |
44e88952 NC |
1249 | #ifdef ARM_WINCE |
1250 | /* FIXME: I don't know why, but the hack is necessary for correct | |
c8e7bf0d | 1251 | generation of bl's instruction offset. */ |
44e88952 NC |
1252 | addend -= 8; |
1253 | #endif | |
53baae48 | 1254 | howto = & fake_arm26_reloc; |
252b5132 RH |
1255 | } |
1256 | ||
17505c5c NC |
1257 | #ifdef ARM_WINCE |
1258 | /* MS ARM-CE makes the reloc relative to the opcode's pc, not | |
d70910e8 | 1259 | the next opcode's pc, so is off by one. */ |
53baae48 NC |
1260 | if (howto->pc_relative && !info->relocatable) |
1261 | addend -= 8; | |
17505c5c | 1262 | #endif |
d70910e8 | 1263 | |
1049f94e | 1264 | /* If we are doing a relocatable link, then we can just ignore |
252b5132 | 1265 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 1266 | have the correct value. If this is not a relocatable link, |
252b5132 RH |
1267 | then we should ignore the symbol value. */ |
1268 | if (howto->pc_relative && howto->pcrel_offset) | |
1269 | { | |
1049f94e | 1270 | if (info->relocatable) |
252b5132 | 1271 | continue; |
87748b32 NC |
1272 | /* FIXME - it is not clear which targets need this next test |
1273 | and which do not. It is known that it is needed for the | |
d8adc60f | 1274 | VxWorks and EPOC-PE targets, but it is also known that it |
5c4491d3 | 1275 | was suppressed for other ARM targets. This ought to be |
d8adc60f NC |
1276 | sorted out one day. */ |
1277 | #ifdef ARM_COFF_BUGFIX | |
87748b32 NC |
1278 | /* We must not ignore the symbol value. If the symbol is |
1279 | within the same section, the relocation should have already | |
1280 | been fixed, but if it is not, we'll be handed a reloc into | |
1281 | the beginning of the symbol's section, so we must not cancel | |
1282 | out the symbol's value, otherwise we'll be adding it in | |
1283 | twice. */ | |
252b5132 RH |
1284 | if (sym != NULL && sym->n_scnum != 0) |
1285 | addend += sym->n_value; | |
ed1de528 | 1286 | #endif |
252b5132 RH |
1287 | } |
1288 | ||
1289 | val = 0; | |
1290 | ||
1291 | if (h == NULL) | |
1292 | { | |
1293 | asection *sec; | |
1294 | ||
1295 | if (symndx == -1) | |
1296 | { | |
1297 | sec = bfd_abs_section_ptr; | |
1298 | val = 0; | |
1299 | } | |
1300 | else | |
1301 | { | |
1302 | sec = sections[symndx]; | |
1303 | val = (sec->output_section->vma | |
1304 | + sec->output_offset | |
1305 | + sym->n_value | |
1306 | - sec->vma); | |
1307 | } | |
1308 | } | |
1309 | else | |
1310 | { | |
252b5132 RH |
1311 | /* We don't output the stubs if we are generating a |
1312 | relocatable output file, since we may as well leave the | |
1313 | stub generation to the final linker pass. If we fail to | |
1314 | verify that the name is defined, we'll try to build stubs | |
d70910e8 | 1315 | for an undefined name... */ |
1049f94e | 1316 | if (! info->relocatable |
252b5132 RH |
1317 | && ( h->root.type == bfd_link_hash_defined |
1318 | || h->root.type == bfd_link_hash_defweak)) | |
1319 | { | |
1320 | asection * h_sec = h->root.u.def.section; | |
1321 | const char * name = h->root.root.string; | |
d70910e8 | 1322 | |
252b5132 RH |
1323 | /* h locates the symbol referenced in the reloc. */ |
1324 | h_val = (h->root.u.def.value | |
1325 | + h_sec->output_section->vma | |
1326 | + h_sec->output_offset); | |
1327 | ||
1328 | if (howto->type == ARM_26) | |
1329 | { | |
96d56e9f NC |
1330 | if ( h->symbol_class == C_THUMBSTATFUNC |
1331 | || h->symbol_class == C_THUMBEXTFUNC) | |
252b5132 | 1332 | { |
917583ad | 1333 | /* Arm code calling a Thumb function. */ |
252b5132 | 1334 | unsigned long int tmp; |
dc810e39 | 1335 | bfd_vma my_offset; |
252b5132 RH |
1336 | asection * s; |
1337 | long int ret_offset; | |
d70910e8 | 1338 | struct coff_link_hash_entry * myh; |
252b5132 | 1339 | struct coff_arm_link_hash_table * globals; |
d70910e8 | 1340 | |
252b5132 RH |
1341 | myh = find_arm_glue (info, name, input_bfd); |
1342 | if (myh == NULL) | |
b34976b6 | 1343 | return FALSE; |
252b5132 RH |
1344 | |
1345 | globals = coff_arm_hash_table (info); | |
1346 | ||
1347 | BFD_ASSERT (globals != NULL); | |
1348 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1349 | |
252b5132 | 1350 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1351 | |
1352 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 RH |
1353 | ARM2THUMB_GLUE_SECTION_NAME); |
1354 | BFD_ASSERT (s != NULL); | |
1355 | BFD_ASSERT (s->contents != NULL); | |
1356 | BFD_ASSERT (s->output_section != NULL); | |
1357 | ||
1358 | if ((my_offset & 0x01) == 0x01) | |
1359 | { | |
1360 | if (h_sec->owner != NULL | |
1361 | && INTERWORK_SET (h_sec->owner) | |
1362 | && ! INTERWORK_FLAG (h_sec->owner)) | |
d003868e AM |
1363 | _bfd_error_handler |
1364 | /* xgettext:c-format */ | |
1365 | (_("%B(%s): warning: interworking not enabled.\n" | |
1366 | " first occurrence: %B: arm call to thumb"), | |
1367 | h_sec->owner, input_bfd, name); | |
252b5132 RH |
1368 | |
1369 | --my_offset; | |
1370 | myh->root.u.def.value = my_offset; | |
1371 | ||
dc810e39 | 1372 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, |
252b5132 | 1373 | s->contents + my_offset); |
d70910e8 | 1374 | |
dc810e39 | 1375 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
252b5132 | 1376 | s->contents + my_offset + 4); |
d70910e8 | 1377 | |
252b5132 RH |
1378 | /* It's a thumb address. Add the low order bit. */ |
1379 | bfd_put_32 (output_bfd, h_val | a2t3_func_addr_insn, | |
1380 | s->contents + my_offset + 8); | |
1381 | ||
b1657152 AM |
1382 | if (info->base_file |
1383 | && !arm_emit_base_file_entry (info, output_bfd, | |
1384 | s, my_offset + 8)) | |
1385 | return FALSE; | |
252b5132 RH |
1386 | } |
1387 | ||
1388 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
1389 | ||
1390 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr | |
1391 | - input_section->vma); | |
d70910e8 | 1392 | |
252b5132 RH |
1393 | tmp = tmp & 0xFF000000; |
1394 | ||
d70910e8 | 1395 | /* Somehow these are both 4 too far, so subtract 8. */ |
252b5132 RH |
1396 | ret_offset = |
1397 | s->output_offset | |
d70910e8 | 1398 | + my_offset |
252b5132 RH |
1399 | + s->output_section->vma |
1400 | - (input_section->output_offset | |
d70910e8 | 1401 | + input_section->output_section->vma |
252b5132 RH |
1402 | + rel->r_vaddr) |
1403 | - 8; | |
1404 | ||
1405 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); | |
d70910e8 | 1406 | |
dc810e39 AM |
1407 | bfd_put_32 (output_bfd, (bfd_vma) tmp, |
1408 | contents + rel->r_vaddr - input_section->vma); | |
252b5132 RH |
1409 | done = 1; |
1410 | } | |
1411 | } | |
d70910e8 | 1412 | |
17505c5c | 1413 | #ifndef ARM_WINCE |
917583ad | 1414 | /* Note: We used to check for ARM_THUMB9 and ARM_THUMB12. */ |
252b5132 RH |
1415 | else if (howto->type == ARM_THUMB23) |
1416 | { | |
96d56e9f NC |
1417 | if ( h->symbol_class == C_EXT |
1418 | || h->symbol_class == C_STAT | |
1419 | || h->symbol_class == C_LABEL) | |
252b5132 | 1420 | { |
c8e7bf0d | 1421 | /* Thumb code calling an ARM function. */ |
252b5132 | 1422 | asection * s = 0; |
dc810e39 | 1423 | bfd_vma my_offset; |
252b5132 RH |
1424 | unsigned long int tmp; |
1425 | long int ret_offset; | |
1426 | struct coff_link_hash_entry * myh; | |
1427 | struct coff_arm_link_hash_table * globals; | |
1428 | ||
1429 | myh = find_thumb_glue (info, name, input_bfd); | |
1430 | if (myh == NULL) | |
b34976b6 | 1431 | return FALSE; |
252b5132 RH |
1432 | |
1433 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1434 | |
252b5132 RH |
1435 | BFD_ASSERT (globals != NULL); |
1436 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1437 | |
252b5132 | 1438 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1439 | |
1440 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 | 1441 | THUMB2ARM_GLUE_SECTION_NAME); |
d70910e8 | 1442 | |
252b5132 RH |
1443 | BFD_ASSERT (s != NULL); |
1444 | BFD_ASSERT (s->contents != NULL); | |
1445 | BFD_ASSERT (s->output_section != NULL); | |
d70910e8 | 1446 | |
252b5132 RH |
1447 | if ((my_offset & 0x01) == 0x01) |
1448 | { | |
1449 | if (h_sec->owner != NULL | |
1450 | && INTERWORK_SET (h_sec->owner) | |
1451 | && ! INTERWORK_FLAG (h_sec->owner) | |
1452 | && ! globals->support_old_code) | |
d003868e AM |
1453 | _bfd_error_handler |
1454 | /* xgettext:c-format */ | |
1455 | (_("%B(%s): warning: interworking not enabled.\n" | |
1456 | " first occurrence: %B: thumb call to arm\n" | |
1457 | " consider relinking with --support-old-code enabled"), | |
1458 | h_sec->owner, input_bfd, name); | |
d70910e8 | 1459 | |
252b5132 RH |
1460 | -- my_offset; |
1461 | myh->root.u.def.value = my_offset; | |
1462 | ||
1463 | if (globals->support_old_code) | |
1464 | { | |
dc810e39 | 1465 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_push_insn, |
252b5132 | 1466 | s->contents + my_offset); |
d70910e8 | 1467 | |
dc810e39 | 1468 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_ldr_insn, |
252b5132 RH |
1469 | s->contents + my_offset + 2); |
1470 | ||
dc810e39 | 1471 | bfd_put_16 (output_bfd, (bfd_vma) t2a3_mov_insn, |
252b5132 RH |
1472 | s->contents + my_offset + 4); |
1473 | ||
dc810e39 | 1474 | bfd_put_16 (output_bfd, (bfd_vma) t2a4_bx_insn, |
252b5132 | 1475 | s->contents + my_offset + 6); |
d70910e8 | 1476 | |
dc810e39 | 1477 | bfd_put_32 (output_bfd, (bfd_vma) t2a5_pop_insn, |
252b5132 | 1478 | s->contents + my_offset + 8); |
d70910e8 | 1479 | |
dc810e39 | 1480 | bfd_put_32 (output_bfd, (bfd_vma) t2a6_bx_insn, |
252b5132 | 1481 | s->contents + my_offset + 12); |
d70910e8 | 1482 | |
252b5132 RH |
1483 | /* Store the address of the function in the last word of the stub. */ |
1484 | bfd_put_32 (output_bfd, h_val, | |
1485 | s->contents + my_offset + 16); | |
fa0e42e4 | 1486 | |
b1657152 AM |
1487 | if (info->base_file |
1488 | && !arm_emit_base_file_entry (info, | |
1489 | output_bfd, s, | |
1490 | my_offset + 16)) | |
1491 | return FALSE; | |
252b5132 RH |
1492 | } |
1493 | else | |
1494 | { | |
dc810e39 | 1495 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 | 1496 | s->contents + my_offset); |
d70910e8 | 1497 | |
dc810e39 | 1498 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 | 1499 | s->contents + my_offset + 2); |
d70910e8 | 1500 | |
252b5132 | 1501 | ret_offset = |
c8e7bf0d NC |
1502 | /* Address of destination of the stub. */ |
1503 | ((bfd_signed_vma) h_val) | |
252b5132 | 1504 | - ((bfd_signed_vma) |
c8e7bf0d NC |
1505 | /* Offset from the start of the current section to the start of the stubs. */ |
1506 | (s->output_offset | |
1507 | /* Offset of the start of this stub from the start of the stubs. */ | |
1508 | + my_offset | |
1509 | /* Address of the start of the current section. */ | |
1510 | + s->output_section->vma) | |
1511 | /* The branch instruction is 4 bytes into the stub. */ | |
1512 | + 4 | |
1513 | /* ARM branches work from the pc of the instruction + 8. */ | |
1514 | + 8); | |
d70910e8 | 1515 | |
252b5132 | 1516 | bfd_put_32 (output_bfd, |
dc810e39 | 1517 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
1518 | s->contents + my_offset + 4); |
1519 | ||
252b5132 RH |
1520 | } |
1521 | } | |
1522 | ||
1523 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
1524 | ||
1525 | /* Now go back and fix up the original BL insn to point | |
1526 | to here. */ | |
1527 | ret_offset = | |
1528 | s->output_offset | |
1529 | + my_offset | |
1530 | - (input_section->output_offset | |
1531 | + rel->r_vaddr) | |
1532 | -4; | |
d70910e8 | 1533 | |
252b5132 RH |
1534 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr |
1535 | - input_section->vma); | |
1536 | ||
1537 | bfd_put_32 (output_bfd, | |
dc810e39 AM |
1538 | (bfd_vma) insert_thumb_branch (tmp, |
1539 | ret_offset), | |
1540 | contents + rel->r_vaddr - input_section->vma); | |
d70910e8 | 1541 | |
252b5132 RH |
1542 | done = 1; |
1543 | } | |
1544 | } | |
17505c5c | 1545 | #endif |
252b5132 | 1546 | } |
d70910e8 | 1547 | |
252b5132 RH |
1548 | /* If the relocation type and destination symbol does not |
1549 | fall into one of the above categories, then we can just | |
d70910e8 | 1550 | perform a direct link. */ |
252b5132 RH |
1551 | |
1552 | if (done) | |
1553 | rstat = bfd_reloc_ok; | |
d70910e8 | 1554 | else |
252b5132 RH |
1555 | if ( h->root.type == bfd_link_hash_defined |
1556 | || h->root.type == bfd_link_hash_defweak) | |
1557 | { | |
1558 | asection *sec; | |
1559 | ||
1560 | sec = h->root.u.def.section; | |
1561 | val = (h->root.u.def.value | |
1562 | + sec->output_section->vma | |
1563 | + sec->output_offset); | |
1564 | } | |
1565 | ||
1049f94e | 1566 | else if (! info->relocatable) |
252b5132 RH |
1567 | { |
1568 | if (! ((*info->callbacks->undefined_symbol) | |
1569 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
1570 | rel->r_vaddr - input_section->vma, TRUE))) |
1571 | return FALSE; | |
252b5132 RH |
1572 | } |
1573 | } | |
1574 | ||
b1657152 AM |
1575 | /* Emit a reloc if the backend thinks it needs it. */ |
1576 | if (info->base_file | |
1577 | && sym | |
1578 | && pe_data(output_bfd)->in_reloc_p(output_bfd, howto) | |
1579 | && !arm_emit_base_file_entry (info, output_bfd, input_section, | |
1580 | rel->r_vaddr)) | |
1581 | return FALSE; | |
d70910e8 | 1582 | |
252b5132 RH |
1583 | if (done) |
1584 | rstat = bfd_reloc_ok; | |
17505c5c | 1585 | #ifndef ARM_WINCE |
c8e7bf0d | 1586 | /* Only perform this fix during the final link, not a relocatable link. */ |
1049f94e | 1587 | else if (! info->relocatable |
252b5132 RH |
1588 | && howto->type == ARM_THUMB23) |
1589 | { | |
1590 | /* This is pretty much a copy of what the default | |
1591 | _bfd_final_link_relocate and _bfd_relocate_contents | |
1592 | routines do to perform a relocation, with special | |
1593 | processing for the split addressing of the Thumb BL | |
1594 | instruction. Again, it would probably be simpler adding a | |
1595 | ThumbBRANCH23 specific macro expansion into the default | |
1596 | code. */ | |
d70910e8 | 1597 | |
252b5132 | 1598 | bfd_vma address = rel->r_vaddr - input_section->vma; |
d70910e8 | 1599 | |
07515404 | 1600 | if (address > high_address) |
252b5132 RH |
1601 | rstat = bfd_reloc_outofrange; |
1602 | else | |
1603 | { | |
b34976b6 AM |
1604 | bfd_vma relocation = val + addend; |
1605 | int size = bfd_get_reloc_size (howto); | |
1606 | bfd_boolean overflow = FALSE; | |
1607 | bfd_byte *location = contents + address; | |
1608 | bfd_vma x = bfd_get_32 (input_bfd, location); | |
1609 | bfd_vma src_mask = 0x007FFFFE; | |
1610 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; | |
1611 | bfd_signed_vma reloc_signed_min = ~reloc_signed_max; | |
1612 | bfd_vma check; | |
1613 | bfd_signed_vma signed_check; | |
1614 | bfd_vma add; | |
1615 | bfd_signed_vma signed_add; | |
252b5132 RH |
1616 | |
1617 | BFD_ASSERT (size == 4); | |
d70910e8 | 1618 | |
4f3c3dbb | 1619 | /* howto->pc_relative should be TRUE for type 14 BRANCH23. */ |
252b5132 RH |
1620 | relocation -= (input_section->output_section->vma |
1621 | + input_section->output_offset); | |
d70910e8 | 1622 | |
4f3c3dbb | 1623 | /* howto->pcrel_offset should be TRUE for type 14 BRANCH23. */ |
252b5132 | 1624 | relocation -= address; |
d70910e8 KH |
1625 | |
1626 | /* No need to negate the relocation with BRANCH23. */ | |
252b5132 RH |
1627 | /* howto->complain_on_overflow == complain_overflow_signed for BRANCH23. */ |
1628 | /* howto->rightshift == 1 */ | |
d70910e8 | 1629 | |
4f3c3dbb | 1630 | /* Drop unwanted bits from the value we are relocating to. */ |
252b5132 | 1631 | check = relocation >> howto->rightshift; |
d70910e8 | 1632 | |
252b5132 RH |
1633 | /* If this is a signed value, the rightshift just dropped |
1634 | leading 1 bits (assuming twos complement). */ | |
1635 | if ((bfd_signed_vma) relocation >= 0) | |
1636 | signed_check = check; | |
1637 | else | |
1638 | signed_check = (check | |
1639 | | ((bfd_vma) - 1 | |
1640 | & ~((bfd_vma) - 1 >> howto->rightshift))); | |
d70910e8 | 1641 | |
252b5132 RH |
1642 | /* Get the value from the object file. */ |
1643 | if (bfd_big_endian (input_bfd)) | |
4f3c3dbb | 1644 | add = (((x) & 0x07ff0000) >> 4) | (((x) & 0x7ff) << 1); |
252b5132 | 1645 | else |
4f3c3dbb | 1646 | add = ((((x) & 0x7ff) << 12) | (((x) & 0x07ff0000) >> 15)); |
252b5132 RH |
1647 | |
1648 | /* Get the value from the object file with an appropriate sign. | |
1649 | The expression involving howto->src_mask isolates the upper | |
1650 | bit of src_mask. If that bit is set in the value we are | |
1651 | adding, it is negative, and we subtract out that number times | |
1652 | two. If src_mask includes the highest possible bit, then we | |
1653 | can not get the upper bit, but that does not matter since | |
1654 | signed_add needs no adjustment to become negative in that | |
1655 | case. */ | |
252b5132 | 1656 | signed_add = add; |
d70910e8 | 1657 | |
252b5132 RH |
1658 | if ((add & (((~ src_mask) >> 1) & src_mask)) != 0) |
1659 | signed_add -= (((~ src_mask) >> 1) & src_mask) << 1; | |
d70910e8 | 1660 | |
4f3c3dbb | 1661 | /* howto->bitpos == 0 */ |
252b5132 RH |
1662 | /* Add the value from the object file, shifted so that it is a |
1663 | straight number. */ | |
252b5132 | 1664 | signed_check += signed_add; |
4f3c3dbb | 1665 | relocation += signed_add; |
252b5132 RH |
1666 | |
1667 | BFD_ASSERT (howto->complain_on_overflow == complain_overflow_signed); | |
1668 | ||
1669 | /* Assumes two's complement. */ | |
1670 | if ( signed_check > reloc_signed_max | |
1671 | || signed_check < reloc_signed_min) | |
b34976b6 | 1672 | overflow = TRUE; |
d70910e8 | 1673 | |
c62e1cc3 NC |
1674 | /* Put the relocation into the correct bits. |
1675 | For a BLX instruction, make sure that the relocation is rounded up | |
1676 | to a word boundary. This follows the semantics of the instruction | |
1677 | which specifies that bit 1 of the target address will come from bit | |
1678 | 1 of the base address. */ | |
252b5132 | 1679 | if (bfd_big_endian (input_bfd)) |
c62e1cc3 NC |
1680 | { |
1681 | if ((x & 0x1800) == 0x0800 && (relocation & 0x02)) | |
1682 | relocation += 2; | |
1683 | relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000)); | |
1684 | } | |
252b5132 | 1685 | else |
c62e1cc3 NC |
1686 | { |
1687 | if ((x & 0x18000000) == 0x08000000 && (relocation & 0x02)) | |
1688 | relocation += 2; | |
1689 | relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff)); | |
1690 | } | |
d70910e8 | 1691 | |
4f3c3dbb | 1692 | /* Add the relocation to the correct bits of X. */ |
252b5132 RH |
1693 | x = ((x & ~howto->dst_mask) | relocation); |
1694 | ||
4f3c3dbb | 1695 | /* Put the relocated value back in the object file. */ |
252b5132 RH |
1696 | bfd_put_32 (input_bfd, x, location); |
1697 | ||
1698 | rstat = overflow ? bfd_reloc_overflow : bfd_reloc_ok; | |
1699 | } | |
1700 | } | |
17505c5c | 1701 | #endif |
252b5132 | 1702 | else |
1e7fef1d NC |
1703 | if (info->relocatable && ! howto->partial_inplace) |
1704 | rstat = bfd_reloc_ok; | |
1705 | else | |
1706 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1707 | contents, | |
1708 | rel->r_vaddr - input_section->vma, | |
1709 | val, addend); | |
c8e7bf0d | 1710 | /* Only perform this fix during the final link, not a relocatable link. */ |
1049f94e | 1711 | if (! info->relocatable |
b44267fd | 1712 | && (rel->r_type == ARM_32 || rel->r_type == ARM_RVA32)) |
252b5132 RH |
1713 | { |
1714 | /* Determine if we need to set the bottom bit of a relocated address | |
1715 | because the address is the address of a Thumb code symbol. */ | |
b34976b6 | 1716 | int patchit = FALSE; |
d70910e8 | 1717 | |
252b5132 | 1718 | if (h != NULL |
96d56e9f NC |
1719 | && ( h->symbol_class == C_THUMBSTATFUNC |
1720 | || h->symbol_class == C_THUMBEXTFUNC)) | |
252b5132 | 1721 | { |
b34976b6 | 1722 | patchit = TRUE; |
252b5132 RH |
1723 | } |
1724 | else if (sym != NULL | |
1725 | && sym->n_scnum > N_UNDEF) | |
1726 | { | |
1727 | /* No hash entry - use the symbol instead. */ | |
252b5132 RH |
1728 | if ( sym->n_sclass == C_THUMBSTATFUNC |
1729 | || sym->n_sclass == C_THUMBEXTFUNC) | |
b34976b6 | 1730 | patchit = TRUE; |
252b5132 RH |
1731 | } |
1732 | ||
1733 | if (patchit) | |
1734 | { | |
1735 | bfd_byte * location = contents + rel->r_vaddr - input_section->vma; | |
1736 | bfd_vma x = bfd_get_32 (input_bfd, location); | |
1737 | ||
1738 | bfd_put_32 (input_bfd, x | 1, location); | |
1739 | } | |
1740 | } | |
d70910e8 | 1741 | |
252b5132 RH |
1742 | switch (rstat) |
1743 | { | |
1744 | default: | |
1745 | abort (); | |
1746 | case bfd_reloc_ok: | |
1747 | break; | |
1748 | case bfd_reloc_outofrange: | |
1749 | (*_bfd_error_handler) | |
d003868e AM |
1750 | (_("%B: bad reloc address 0x%lx in section `%A'"), |
1751 | input_bfd, input_section, (unsigned long) rel->r_vaddr); | |
b34976b6 | 1752 | return FALSE; |
252b5132 RH |
1753 | case bfd_reloc_overflow: |
1754 | { | |
1755 | const char *name; | |
1756 | char buf[SYMNMLEN + 1]; | |
1757 | ||
1758 | if (symndx == -1) | |
1759 | name = "*ABS*"; | |
1760 | else if (h != NULL) | |
dfeffb9f | 1761 | name = NULL; |
252b5132 RH |
1762 | else |
1763 | { | |
1764 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
1765 | if (name == NULL) | |
b34976b6 | 1766 | return FALSE; |
252b5132 RH |
1767 | } |
1768 | ||
1769 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
1770 | (info, (h ? &h->root : NULL), name, howto->name, |
1771 | (bfd_vma) 0, input_bfd, input_section, | |
1772 | rel->r_vaddr - input_section->vma))) | |
b34976b6 | 1773 | return FALSE; |
252b5132 RH |
1774 | } |
1775 | } | |
1776 | } | |
1777 | ||
b34976b6 | 1778 | return TRUE; |
252b5132 RH |
1779 | } |
1780 | ||
e049a0de ILT |
1781 | #ifndef COFF_IMAGE_WITH_PE |
1782 | ||
b34976b6 | 1783 | bfd_boolean |
c8e7bf0d | 1784 | bfd_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
1785 | { |
1786 | asection * s; | |
1787 | bfd_byte * foo; | |
1788 | struct coff_arm_link_hash_table * globals; | |
252b5132 RH |
1789 | |
1790 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1791 | |
252b5132 RH |
1792 | BFD_ASSERT (globals != NULL); |
1793 | ||
1794 | if (globals->arm_glue_size != 0) | |
1795 | { | |
1796 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1797 | |
252b5132 RH |
1798 | s = bfd_get_section_by_name |
1799 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1800 | ||
1801 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1802 | |
c8e7bf0d | 1803 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
d70910e8 | 1804 | |
eea6121a | 1805 | s->size = globals->arm_glue_size; |
252b5132 RH |
1806 | s->contents = foo; |
1807 | } | |
1808 | ||
1809 | if (globals->thumb_glue_size != 0) | |
1810 | { | |
1811 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1812 | |
252b5132 RH |
1813 | s = bfd_get_section_by_name |
1814 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1815 | ||
1816 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1817 | |
c8e7bf0d | 1818 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
d70910e8 | 1819 | |
eea6121a | 1820 | s->size = globals->thumb_glue_size; |
252b5132 RH |
1821 | s->contents = foo; |
1822 | } | |
1823 | ||
b34976b6 | 1824 | return TRUE; |
252b5132 RH |
1825 | } |
1826 | ||
1827 | static void | |
c8e7bf0d NC |
1828 | record_arm_to_thumb_glue (struct bfd_link_info * info, |
1829 | struct coff_link_hash_entry * h) | |
252b5132 RH |
1830 | { |
1831 | const char * name = h->root.root.string; | |
1832 | register asection * s; | |
1833 | char * tmp_name; | |
1834 | struct coff_link_hash_entry * myh; | |
14a793b2 | 1835 | struct bfd_link_hash_entry * bh; |
252b5132 | 1836 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1837 | bfd_vma val; |
1838 | bfd_size_type amt; | |
252b5132 RH |
1839 | |
1840 | globals = coff_arm_hash_table (info); | |
1841 | ||
1842 | BFD_ASSERT (globals != NULL); | |
1843 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1844 | ||
1845 | s = bfd_get_section_by_name | |
1846 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1847 | ||
1848 | BFD_ASSERT (s != NULL); | |
1849 | ||
dc810e39 | 1850 | amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
c8e7bf0d | 1851 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1852 | |
1853 | BFD_ASSERT (tmp_name); | |
1854 | ||
1855 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1856 | |
252b5132 | 1857 | myh = coff_link_hash_lookup |
b34976b6 | 1858 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1859 | |
252b5132 RH |
1860 | if (myh != NULL) |
1861 | { | |
1862 | free (tmp_name); | |
c8e7bf0d NC |
1863 | /* We've already seen this guy. */ |
1864 | return; | |
252b5132 RH |
1865 | } |
1866 | ||
1867 | /* The only trick here is using globals->arm_glue_size as the value. Even | |
1868 | though the section isn't allocated yet, this is where we will be putting | |
1869 | it. */ | |
14a793b2 | 1870 | bh = NULL; |
dc810e39 | 1871 | val = globals->arm_glue_size + 1; |
252b5132 | 1872 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1873 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1874 | |
252b5132 | 1875 | free (tmp_name); |
d70910e8 | 1876 | |
252b5132 RH |
1877 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; |
1878 | ||
1879 | return; | |
1880 | } | |
1881 | ||
7831a775 | 1882 | #ifndef ARM_WINCE |
252b5132 | 1883 | static void |
c8e7bf0d NC |
1884 | record_thumb_to_arm_glue (struct bfd_link_info * info, |
1885 | struct coff_link_hash_entry * h) | |
252b5132 RH |
1886 | { |
1887 | const char * name = h->root.root.string; | |
c8e7bf0d | 1888 | asection * s; |
252b5132 RH |
1889 | char * tmp_name; |
1890 | struct coff_link_hash_entry * myh; | |
14a793b2 | 1891 | struct bfd_link_hash_entry * bh; |
252b5132 | 1892 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1893 | bfd_vma val; |
1894 | bfd_size_type amt; | |
252b5132 | 1895 | |
252b5132 | 1896 | globals = coff_arm_hash_table (info); |
d70910e8 | 1897 | |
252b5132 RH |
1898 | BFD_ASSERT (globals != NULL); |
1899 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1900 | ||
1901 | s = bfd_get_section_by_name | |
1902 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1903 | ||
1904 | BFD_ASSERT (s != NULL); | |
1905 | ||
dc810e39 | 1906 | amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; |
c8e7bf0d | 1907 | tmp_name = bfd_malloc (amt); |
252b5132 RH |
1908 | |
1909 | BFD_ASSERT (tmp_name); | |
1910 | ||
1911 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1912 | ||
1913 | myh = coff_link_hash_lookup | |
b34976b6 | 1914 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1915 | |
252b5132 RH |
1916 | if (myh != NULL) |
1917 | { | |
1918 | free (tmp_name); | |
c8e7bf0d NC |
1919 | /* We've already seen this guy. */ |
1920 | return; | |
252b5132 RH |
1921 | } |
1922 | ||
14a793b2 | 1923 | bh = NULL; |
dc810e39 | 1924 | val = globals->thumb_glue_size + 1; |
252b5132 | 1925 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1926 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1927 | |
252b5132 | 1928 | /* If we mark it 'thumb', the disassembler will do a better job. */ |
14a793b2 | 1929 | myh = (struct coff_link_hash_entry *) bh; |
96d56e9f | 1930 | myh->symbol_class = C_THUMBEXTFUNC; |
252b5132 RH |
1931 | |
1932 | free (tmp_name); | |
1933 | ||
1934 | /* Allocate another symbol to mark where we switch to arm mode. */ | |
d70910e8 | 1935 | |
252b5132 RH |
1936 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
1937 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
d70910e8 | 1938 | |
dc810e39 | 1939 | amt = strlen (name) + strlen (CHANGE_TO_ARM) + 1; |
c8e7bf0d | 1940 | tmp_name = bfd_malloc (amt); |
d70910e8 | 1941 | |
252b5132 | 1942 | BFD_ASSERT (tmp_name); |
d70910e8 | 1943 | |
252b5132 RH |
1944 | sprintf (tmp_name, globals->support_old_code ? BACK_FROM_ARM : CHANGE_TO_ARM, name); |
1945 | ||
14a793b2 | 1946 | bh = NULL; |
dc810e39 | 1947 | val = globals->thumb_glue_size + (globals->support_old_code ? 8 : 4); |
252b5132 | 1948 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1949 | BSF_LOCAL, s, val, NULL, TRUE, FALSE, &bh); |
252b5132 | 1950 | |
d70910e8 KH |
1951 | free (tmp_name); |
1952 | ||
252b5132 RH |
1953 | globals->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
1954 | ||
1955 | return; | |
1956 | } | |
7831a775 | 1957 | #endif /* not ARM_WINCE */ |
252b5132 RH |
1958 | |
1959 | /* Select a BFD to be used to hold the sections used by the glue code. | |
1960 | This function is called from the linker scripts in ld/emultempl/ | |
1961 | {armcoff/pe}.em */ | |
e049a0de | 1962 | |
b34976b6 | 1963 | bfd_boolean |
c8e7bf0d NC |
1964 | bfd_arm_get_bfd_for_interworking (bfd * abfd, |
1965 | struct bfd_link_info * info) | |
252b5132 RH |
1966 | { |
1967 | struct coff_arm_link_hash_table * globals; | |
1968 | flagword flags; | |
1969 | asection * sec; | |
d70910e8 | 1970 | |
252b5132 RH |
1971 | /* If we are only performing a partial link do not bother |
1972 | getting a bfd to hold the glue. */ | |
1049f94e | 1973 | if (info->relocatable) |
b34976b6 | 1974 | return TRUE; |
d70910e8 | 1975 | |
252b5132 | 1976 | globals = coff_arm_hash_table (info); |
d70910e8 | 1977 | |
252b5132 RH |
1978 | BFD_ASSERT (globals != NULL); |
1979 | ||
1980 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 1981 | return TRUE; |
d70910e8 | 1982 | |
252b5132 | 1983 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
d70910e8 KH |
1984 | |
1985 | if (sec == NULL) | |
252b5132 | 1986 | { |
117ed4f8 AM |
1987 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1988 | | SEC_CODE | SEC_READONLY); | |
1989 | sec = bfd_make_section_with_flags (abfd, ARM2THUMB_GLUE_SECTION_NAME, | |
1990 | flags); | |
252b5132 | 1991 | if (sec == NULL |
252b5132 | 1992 | || ! bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 1993 | return FALSE; |
252b5132 RH |
1994 | } |
1995 | ||
1996 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1997 | ||
d70910e8 | 1998 | if (sec == NULL) |
252b5132 | 1999 | { |
117ed4f8 AM |
2000 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2001 | | SEC_CODE | SEC_READONLY); | |
2002 | sec = bfd_make_section_with_flags (abfd, THUMB2ARM_GLUE_SECTION_NAME, | |
2003 | flags); | |
d70910e8 | 2004 | |
252b5132 | 2005 | if (sec == NULL |
252b5132 | 2006 | || ! bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 2007 | return FALSE; |
252b5132 | 2008 | } |
d70910e8 | 2009 | |
252b5132 RH |
2010 | /* Save the bfd for later use. */ |
2011 | globals->bfd_of_glue_owner = abfd; | |
d70910e8 | 2012 | |
b34976b6 | 2013 | return TRUE; |
252b5132 RH |
2014 | } |
2015 | ||
b34976b6 | 2016 | bfd_boolean |
c8e7bf0d NC |
2017 | bfd_arm_process_before_allocation (bfd * abfd, |
2018 | struct bfd_link_info * info, | |
2019 | int support_old_code) | |
252b5132 RH |
2020 | { |
2021 | asection * sec; | |
2022 | struct coff_arm_link_hash_table * globals; | |
2023 | ||
2024 | /* If we are only performing a partial link do not bother | |
2025 | to construct any glue. */ | |
1049f94e | 2026 | if (info->relocatable) |
b34976b6 | 2027 | return TRUE; |
d70910e8 | 2028 | |
252b5132 RH |
2029 | /* Here we have a bfd that is to be included on the link. We have a hook |
2030 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
2031 | _bfd_coff_get_external_symbols (abfd); |
2032 | ||
2033 | globals = coff_arm_hash_table (info); | |
d70910e8 | 2034 | |
252b5132 RH |
2035 | BFD_ASSERT (globals != NULL); |
2036 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2037 | ||
2038 | globals->support_old_code = support_old_code; | |
d70910e8 | 2039 | |
252b5132 RH |
2040 | /* Rummage around all the relocs and map the glue vectors. */ |
2041 | sec = abfd->sections; | |
2042 | ||
2043 | if (sec == NULL) | |
b34976b6 | 2044 | return TRUE; |
252b5132 RH |
2045 | |
2046 | for (; sec != NULL; sec = sec->next) | |
2047 | { | |
2048 | struct internal_reloc * i; | |
2049 | struct internal_reloc * rel; | |
2050 | ||
d70910e8 | 2051 | if (sec->reloc_count == 0) |
252b5132 RH |
2052 | continue; |
2053 | ||
2054 | /* Load the relocs. */ | |
d70910e8 | 2055 | /* FIXME: there may be a storage leak here. */ |
252b5132 | 2056 | i = _bfd_coff_read_internal_relocs (abfd, sec, 1, 0, 0, 0); |
d70910e8 | 2057 | |
252b5132 RH |
2058 | BFD_ASSERT (i != 0); |
2059 | ||
d70910e8 | 2060 | for (rel = i; rel < i + sec->reloc_count; ++rel) |
252b5132 RH |
2061 | { |
2062 | unsigned short r_type = rel->r_type; | |
86033394 | 2063 | long symndx; |
252b5132 RH |
2064 | struct coff_link_hash_entry * h; |
2065 | ||
2066 | symndx = rel->r_symndx; | |
2067 | ||
d70910e8 | 2068 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2069 | if (symndx == -1) |
2070 | continue; | |
2071 | ||
17505c5c | 2072 | /* If the index is outside of the range of our table, something has gone wrong. */ |
af74ae99 NC |
2073 | if (symndx >= obj_conv_table_size (abfd)) |
2074 | { | |
d003868e AM |
2075 | _bfd_error_handler (_("%B: illegal symbol index in reloc: %d"), |
2076 | abfd, symndx); | |
af74ae99 NC |
2077 | continue; |
2078 | } | |
d70910e8 | 2079 | |
252b5132 RH |
2080 | h = obj_coff_sym_hashes (abfd)[symndx]; |
2081 | ||
2082 | /* If the relocation is against a static symbol it must be within | |
2083 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2084 | if (h == NULL) | |
2085 | continue; | |
2086 | ||
2087 | switch (r_type) | |
2088 | { | |
2089 | case ARM_26: | |
2090 | /* This one is a call from arm code. We need to look up | |
2091 | the target of the call. If it is a thumb target, we | |
2092 | insert glue. */ | |
d70910e8 | 2093 | |
96d56e9f | 2094 | if (h->symbol_class == C_THUMBEXTFUNC) |
252b5132 RH |
2095 | record_arm_to_thumb_glue (info, h); |
2096 | break; | |
d70910e8 | 2097 | |
17505c5c | 2098 | #ifndef ARM_WINCE |
252b5132 RH |
2099 | case ARM_THUMB23: |
2100 | /* This one is a call from thumb code. We used to look | |
2101 | for ARM_THUMB9 and ARM_THUMB12 as well. We need to look | |
2102 | up the target of the call. If it is an arm target, we | |
2103 | insert glue. If the symbol does not exist it will be | |
2104 | given a class of C_EXT and so we will generate a stub | |
2105 | for it. This is not really a problem, since the link | |
2106 | is doomed anyway. */ | |
2107 | ||
96d56e9f | 2108 | switch (h->symbol_class) |
252b5132 RH |
2109 | { |
2110 | case C_EXT: | |
2111 | case C_STAT: | |
2112 | case C_LABEL: | |
2113 | record_thumb_to_arm_glue (info, h); | |
2114 | break; | |
2115 | default: | |
2116 | ; | |
2117 | } | |
2118 | break; | |
17505c5c | 2119 | #endif |
d70910e8 | 2120 | |
252b5132 RH |
2121 | default: |
2122 | break; | |
2123 | } | |
2124 | } | |
2125 | } | |
2126 | ||
b34976b6 | 2127 | return TRUE; |
252b5132 RH |
2128 | } |
2129 | ||
e049a0de ILT |
2130 | #endif /* ! defined (COFF_IMAGE_WITH_PE) */ |
2131 | ||
252b5132 | 2132 | #define coff_bfd_reloc_type_lookup coff_arm_reloc_type_lookup |
157090f7 | 2133 | #define coff_bfd_reloc_name_lookup coff_arm_reloc_name_lookup |
252b5132 RH |
2134 | #define coff_relocate_section coff_arm_relocate_section |
2135 | #define coff_bfd_is_local_label_name coff_arm_is_local_label_name | |
2136 | #define coff_adjust_symndx coff_arm_adjust_symndx | |
2137 | #define coff_link_output_has_begun coff_arm_link_output_has_begun | |
2138 | #define coff_final_link_postscript coff_arm_final_link_postscript | |
2139 | #define coff_bfd_merge_private_bfd_data coff_arm_merge_private_bfd_data | |
2140 | #define coff_bfd_print_private_bfd_data coff_arm_print_private_bfd_data | |
2141 | #define coff_bfd_set_private_flags _bfd_coff_arm_set_private_flags | |
2142 | #define coff_bfd_copy_private_bfd_data coff_arm_copy_private_bfd_data | |
2143 | #define coff_bfd_link_hash_table_create coff_arm_link_hash_table_create | |
2144 | ||
d21356d8 NC |
2145 | /* When doing a relocatable link, we want to convert ARM_26 relocs |
2146 | into ARM_26D relocs. */ | |
252b5132 | 2147 | |
b34976b6 | 2148 | static bfd_boolean |
c8e7bf0d NC |
2149 | coff_arm_adjust_symndx (bfd *obfd ATTRIBUTE_UNUSED, |
2150 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2151 | bfd *ibfd, | |
2152 | asection *sec, | |
2153 | struct internal_reloc *irel, | |
2154 | bfd_boolean *adjustedp) | |
252b5132 | 2155 | { |
d21356d8 | 2156 | if (irel->r_type == ARM_26) |
252b5132 RH |
2157 | { |
2158 | struct coff_link_hash_entry *h; | |
2159 | ||
2160 | h = obj_coff_sym_hashes (ibfd)[irel->r_symndx]; | |
2161 | if (h != NULL | |
2162 | && (h->root.type == bfd_link_hash_defined | |
2163 | || h->root.type == bfd_link_hash_defweak) | |
2164 | && h->root.u.def.section->output_section == sec->output_section) | |
d21356d8 | 2165 | irel->r_type = ARM_26D; |
252b5132 | 2166 | } |
b34976b6 AM |
2167 | *adjustedp = FALSE; |
2168 | return TRUE; | |
252b5132 RH |
2169 | } |
2170 | ||
2171 | /* Called when merging the private data areas of two BFDs. | |
2172 | This is important as it allows us to detect if we are | |
2173 | attempting to merge binaries compiled for different ARM | |
5c4491d3 | 2174 | targets, eg different CPUs or different APCS's. */ |
252b5132 | 2175 | |
b34976b6 | 2176 | static bfd_boolean |
c8e7bf0d | 2177 | coff_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
2178 | { |
2179 | BFD_ASSERT (ibfd != NULL && obfd != NULL); | |
2180 | ||
2181 | if (ibfd == obfd) | |
b34976b6 | 2182 | return TRUE; |
252b5132 RH |
2183 | |
2184 | /* If the two formats are different we cannot merge anything. | |
2185 | This is not an error, since it is permissable to change the | |
2186 | input and output formats. */ | |
2187 | if ( ibfd->xvec->flavour != bfd_target_coff_flavour | |
2188 | || obfd->xvec->flavour != bfd_target_coff_flavour) | |
b34976b6 | 2189 | return TRUE; |
252b5132 | 2190 | |
5a6c6817 NC |
2191 | /* Determine what should happen if the input ARM architecture |
2192 | does not match the output ARM architecture. */ | |
2193 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
2194 | return FALSE; | |
2195 | ||
2196 | /* Verify that the APCS is the same for the two BFDs. */ | |
252b5132 RH |
2197 | if (APCS_SET (ibfd)) |
2198 | { | |
2199 | if (APCS_SET (obfd)) | |
2200 | { | |
2201 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2202 | if (APCS_26_FLAG (obfd) != APCS_26_FLAG (ibfd)) | |
2203 | { | |
2204 | _bfd_error_handler | |
2205 | /* xgettext: c-format */ | |
3895f852 | 2206 | (_("error: %B is compiled for APCS-%d, whereas %B is compiled for APCS-%d"), |
d003868e AM |
2207 | ibfd, obfd, |
2208 | APCS_26_FLAG (ibfd) ? 26 : 32, | |
2209 | APCS_26_FLAG (obfd) ? 26 : 32 | |
252b5132 RH |
2210 | ); |
2211 | ||
2212 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2213 | return FALSE; |
252b5132 | 2214 | } |
d70910e8 | 2215 | |
252b5132 RH |
2216 | if (APCS_FLOAT_FLAG (obfd) != APCS_FLOAT_FLAG (ibfd)) |
2217 | { | |
2218 | const char *msg; | |
2219 | ||
2220 | if (APCS_FLOAT_FLAG (ibfd)) | |
2221 | /* xgettext: c-format */ | |
3895f852 | 2222 | msg = _("error: %B passes floats in float registers, whereas %B passes them in integer registers"); |
252b5132 RH |
2223 | else |
2224 | /* xgettext: c-format */ | |
3895f852 | 2225 | msg = _("error: %B passes floats in integer registers, whereas %B passes them in float registers"); |
d70910e8 | 2226 | |
d003868e | 2227 | _bfd_error_handler (msg, ibfd, obfd); |
252b5132 RH |
2228 | |
2229 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2230 | return FALSE; |
252b5132 | 2231 | } |
d70910e8 | 2232 | |
252b5132 RH |
2233 | if (PIC_FLAG (obfd) != PIC_FLAG (ibfd)) |
2234 | { | |
2235 | const char * msg; | |
2236 | ||
2237 | if (PIC_FLAG (ibfd)) | |
2238 | /* xgettext: c-format */ | |
3895f852 | 2239 | msg = _("error: %B is compiled as position independent code, whereas target %B is absolute position"); |
252b5132 RH |
2240 | else |
2241 | /* xgettext: c-format */ | |
3895f852 | 2242 | msg = _("error: %B is compiled as absolute position code, whereas target %B is position independent"); |
d003868e | 2243 | _bfd_error_handler (msg, ibfd, obfd); |
252b5132 RH |
2244 | |
2245 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2246 | return FALSE; |
252b5132 RH |
2247 | } |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | SET_APCS_FLAGS (obfd, APCS_26_FLAG (ibfd) | APCS_FLOAT_FLAG (ibfd) | PIC_FLAG (ibfd)); | |
d70910e8 | 2252 | |
252b5132 RH |
2253 | /* Set up the arch and fields as well as these are probably wrong. */ |
2254 | bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
2255 | } | |
2256 | } | |
2257 | ||
2258 | /* Check the interworking support. */ | |
2259 | if (INTERWORK_SET (ibfd)) | |
2260 | { | |
2261 | if (INTERWORK_SET (obfd)) | |
2262 | { | |
2263 | /* If the src and dest differ in their interworking issue a warning. */ | |
2264 | if (INTERWORK_FLAG (obfd) != INTERWORK_FLAG (ibfd)) | |
2265 | { | |
2266 | const char * msg; | |
2267 | ||
2268 | if (INTERWORK_FLAG (ibfd)) | |
2269 | /* xgettext: c-format */ | |
d003868e | 2270 | msg = _("Warning: %B supports interworking, whereas %B does not"); |
252b5132 RH |
2271 | else |
2272 | /* xgettext: c-format */ | |
d003868e | 2273 | msg = _("Warning: %B does not support interworking, whereas %B does"); |
d70910e8 | 2274 | |
d003868e | 2275 | _bfd_error_handler (msg, ibfd, obfd); |
252b5132 RH |
2276 | } |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | SET_INTERWORK_FLAG (obfd, INTERWORK_FLAG (ibfd)); | |
2281 | } | |
2282 | } | |
2283 | ||
b34976b6 | 2284 | return TRUE; |
252b5132 RH |
2285 | } |
2286 | ||
252b5132 RH |
2287 | /* Display the flags field. */ |
2288 | ||
b34976b6 | 2289 | static bfd_boolean |
c8e7bf0d | 2290 | coff_arm_print_private_bfd_data (bfd * abfd, void * ptr) |
252b5132 RH |
2291 | { |
2292 | FILE * file = (FILE *) ptr; | |
d70910e8 | 2293 | |
252b5132 | 2294 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
d70910e8 | 2295 | |
252b5132 RH |
2296 | /* xgettext:c-format */ |
2297 | fprintf (file, _("private flags = %x:"), coff_data (abfd)->flags); | |
d70910e8 | 2298 | |
252b5132 RH |
2299 | if (APCS_SET (abfd)) |
2300 | { | |
5c4491d3 | 2301 | /* xgettext: APCS is ARM Procedure Call Standard, it should not be translated. */ |
252b5132 RH |
2302 | fprintf (file, " [APCS-%d]", APCS_26_FLAG (abfd) ? 26 : 32); |
2303 | ||
2304 | if (APCS_FLOAT_FLAG (abfd)) | |
2305 | fprintf (file, _(" [floats passed in float registers]")); | |
2306 | else | |
2307 | fprintf (file, _(" [floats passed in integer registers]")); | |
2308 | ||
2309 | if (PIC_FLAG (abfd)) | |
2310 | fprintf (file, _(" [position independent]")); | |
2311 | else | |
2312 | fprintf (file, _(" [absolute position]")); | |
2313 | } | |
d70910e8 | 2314 | |
252b5132 RH |
2315 | if (! INTERWORK_SET (abfd)) |
2316 | fprintf (file, _(" [interworking flag not initialised]")); | |
2317 | else if (INTERWORK_FLAG (abfd)) | |
2318 | fprintf (file, _(" [interworking supported]")); | |
2319 | else | |
2320 | fprintf (file, _(" [interworking not supported]")); | |
d70910e8 | 2321 | |
252b5132 | 2322 | fputc ('\n', file); |
d70910e8 | 2323 | |
b34976b6 | 2324 | return TRUE; |
252b5132 RH |
2325 | } |
2326 | ||
252b5132 RH |
2327 | /* Copies the given flags into the coff_tdata.flags field. |
2328 | Typically these flags come from the f_flags[] field of | |
2329 | the COFF filehdr structure, which contains important, | |
2330 | target specific information. | |
2331 | Note: Although this function is static, it is explicitly | |
2332 | called from both coffcode.h and peicode.h. */ | |
2333 | ||
b34976b6 | 2334 | static bfd_boolean |
c8e7bf0d | 2335 | _bfd_coff_arm_set_private_flags (bfd * abfd, flagword flags) |
252b5132 RH |
2336 | { |
2337 | flagword flag; | |
2338 | ||
2339 | BFD_ASSERT (abfd != NULL); | |
2340 | ||
2341 | flag = (flags & F_APCS26) ? F_APCS_26 : 0; | |
d70910e8 | 2342 | |
252b5132 RH |
2343 | /* Make sure that the APCS field has not been initialised to the opposite |
2344 | value. */ | |
2345 | if (APCS_SET (abfd) | |
2346 | && ( (APCS_26_FLAG (abfd) != flag) | |
2347 | || (APCS_FLOAT_FLAG (abfd) != (flags & F_APCS_FLOAT)) | |
948221a8 | 2348 | || (PIC_FLAG (abfd) != (flags & F_PIC)) |
252b5132 | 2349 | )) |
b34976b6 | 2350 | return FALSE; |
252b5132 RH |
2351 | |
2352 | flag |= (flags & (F_APCS_FLOAT | F_PIC)); | |
d70910e8 | 2353 | |
252b5132 RH |
2354 | SET_APCS_FLAGS (abfd, flag); |
2355 | ||
2356 | flag = (flags & F_INTERWORK); | |
d70910e8 | 2357 | |
252b5132 RH |
2358 | /* If the BFD has already had its interworking flag set, but it |
2359 | is different from the value that we have been asked to set, | |
2360 | then assume that that merged code will not support interworking | |
2361 | and set the flag accordingly. */ | |
2362 | if (INTERWORK_SET (abfd) && (INTERWORK_FLAG (abfd) != flag)) | |
2363 | { | |
2364 | if (flag) | |
2365 | /* xgettext: c-format */ | |
d003868e AM |
2366 | _bfd_error_handler (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), |
2367 | abfd); | |
252b5132 RH |
2368 | else |
2369 | /* xgettext: c-format */ | |
d003868e AM |
2370 | _bfd_error_handler (_("Warning: Clearing the interworking flag of %B due to outside request"), |
2371 | abfd); | |
252b5132 RH |
2372 | flag = 0; |
2373 | } | |
2374 | ||
2375 | SET_INTERWORK_FLAG (abfd, flag); | |
2376 | ||
b34976b6 | 2377 | return TRUE; |
252b5132 RH |
2378 | } |
2379 | ||
252b5132 RH |
2380 | /* Copy the important parts of the target specific data |
2381 | from one instance of a BFD to another. */ | |
2382 | ||
b34976b6 | 2383 | static bfd_boolean |
c8e7bf0d | 2384 | coff_arm_copy_private_bfd_data (bfd * src, bfd * dest) |
252b5132 RH |
2385 | { |
2386 | BFD_ASSERT (src != NULL && dest != NULL); | |
d70910e8 | 2387 | |
252b5132 | 2388 | if (src == dest) |
b34976b6 | 2389 | return TRUE; |
252b5132 RH |
2390 | |
2391 | /* If the destination is not in the same format as the source, do not do | |
2392 | the copy. */ | |
2393 | if (src->xvec != dest->xvec) | |
b34976b6 | 2394 | return TRUE; |
252b5132 | 2395 | |
c8e7bf0d | 2396 | /* Copy the flags field. */ |
252b5132 RH |
2397 | if (APCS_SET (src)) |
2398 | { | |
2399 | if (APCS_SET (dest)) | |
2400 | { | |
2401 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2402 | if (APCS_26_FLAG (dest) != APCS_26_FLAG (src)) | |
b34976b6 | 2403 | return FALSE; |
d70910e8 | 2404 | |
252b5132 | 2405 | if (APCS_FLOAT_FLAG (dest) != APCS_FLOAT_FLAG (src)) |
b34976b6 | 2406 | return FALSE; |
d70910e8 | 2407 | |
252b5132 | 2408 | if (PIC_FLAG (dest) != PIC_FLAG (src)) |
b34976b6 | 2409 | return FALSE; |
252b5132 RH |
2410 | } |
2411 | else | |
2412 | SET_APCS_FLAGS (dest, APCS_26_FLAG (src) | APCS_FLOAT_FLAG (src) | |
2413 | | PIC_FLAG (src)); | |
2414 | } | |
2415 | ||
2416 | if (INTERWORK_SET (src)) | |
2417 | { | |
2418 | if (INTERWORK_SET (dest)) | |
2419 | { | |
2420 | /* If the src and dest have different interworking flags then turn | |
2421 | off the interworking bit. */ | |
2422 | if (INTERWORK_FLAG (dest) != INTERWORK_FLAG (src)) | |
2423 | { | |
2424 | if (INTERWORK_FLAG (dest)) | |
2425 | { | |
2426 | /* xgettext:c-format */ | |
ae1a89b7 | 2427 | _bfd_error_handler (("\ |
d003868e AM |
2428 | Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), |
2429 | dest, src); | |
252b5132 | 2430 | } |
d70910e8 | 2431 | |
252b5132 RH |
2432 | SET_INTERWORK_FLAG (dest, 0); |
2433 | } | |
2434 | } | |
2435 | else | |
2436 | { | |
2437 | SET_INTERWORK_FLAG (dest, INTERWORK_FLAG (src)); | |
2438 | } | |
2439 | } | |
2440 | ||
b34976b6 | 2441 | return TRUE; |
252b5132 RH |
2442 | } |
2443 | ||
2444 | /* Note: the definitions here of LOCAL_LABEL_PREFIX and USER_LABEL_PREIFX | |
c31c1f70 | 2445 | *must* match the definitions in gcc/config/arm/{coff|semi|aout}.h. */ |
d66dff94 | 2446 | #ifndef LOCAL_LABEL_PREFIX |
c31c1f70 | 2447 | #define LOCAL_LABEL_PREFIX "" |
d66dff94 | 2448 | #endif |
252b5132 RH |
2449 | #ifndef USER_LABEL_PREFIX |
2450 | #define USER_LABEL_PREFIX "_" | |
2451 | #endif | |
2452 | ||
f8111282 NC |
2453 | /* Like _bfd_coff_is_local_label_name, but |
2454 | a) test against USER_LABEL_PREFIX, to avoid stripping labels known to be | |
2455 | non-local. | |
2456 | b) Allow other prefixes than ".", e.g. an empty prefix would cause all | |
2457 | labels of the form Lxxx to be stripped. */ | |
c8e7bf0d | 2458 | |
b34976b6 | 2459 | static bfd_boolean |
c8e7bf0d NC |
2460 | coff_arm_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED, |
2461 | const char * name) | |
252b5132 | 2462 | { |
252b5132 RH |
2463 | #ifdef USER_LABEL_PREFIX |
2464 | if (USER_LABEL_PREFIX[0] != 0) | |
2465 | { | |
5ff625e9 AM |
2466 | size_t len = strlen (USER_LABEL_PREFIX); |
2467 | ||
2468 | if (strncmp (name, USER_LABEL_PREFIX, len) == 0) | |
b34976b6 | 2469 | return FALSE; |
252b5132 RH |
2470 | } |
2471 | #endif | |
f8111282 NC |
2472 | |
2473 | #ifdef LOCAL_LABEL_PREFIX | |
2474 | /* If there is a prefix for local labels then look for this. | |
d70910e8 KH |
2475 | If the prefix exists, but it is empty, then ignore the test. */ |
2476 | ||
f8111282 | 2477 | if (LOCAL_LABEL_PREFIX[0] != 0) |
252b5132 | 2478 | { |
dc810e39 | 2479 | size_t len = strlen (LOCAL_LABEL_PREFIX); |
d70910e8 | 2480 | |
f8111282 | 2481 | if (strncmp (name, LOCAL_LABEL_PREFIX, len) != 0) |
b34976b6 | 2482 | return FALSE; |
d70910e8 | 2483 | |
f8111282 NC |
2484 | /* Perform the checks below for the rest of the name. */ |
2485 | name += len; | |
252b5132 | 2486 | } |
f8111282 | 2487 | #endif |
d70910e8 | 2488 | |
f8111282 | 2489 | return name[0] == 'L'; |
252b5132 RH |
2490 | } |
2491 | ||
2492 | /* This piece of machinery exists only to guarantee that the bfd that holds | |
d70910e8 | 2493 | the glue section is written last. |
252b5132 RH |
2494 | |
2495 | This does depend on bfd_make_section attaching a new section to the | |
c8e7bf0d | 2496 | end of the section list for the bfd. */ |
252b5132 | 2497 | |
b34976b6 | 2498 | static bfd_boolean |
c8e7bf0d | 2499 | coff_arm_link_output_has_begun (bfd * sub, struct coff_final_link_info * info) |
252b5132 RH |
2500 | { |
2501 | return (sub->output_has_begun | |
2502 | || sub == coff_arm_hash_table (info->info)->bfd_of_glue_owner); | |
2503 | } | |
2504 | ||
b34976b6 | 2505 | static bfd_boolean |
c8e7bf0d NC |
2506 | coff_arm_final_link_postscript (bfd * abfd ATTRIBUTE_UNUSED, |
2507 | struct coff_final_link_info * pfinfo) | |
252b5132 RH |
2508 | { |
2509 | struct coff_arm_link_hash_table * globals; | |
2510 | ||
2511 | globals = coff_arm_hash_table (pfinfo->info); | |
d70910e8 | 2512 | |
252b5132 | 2513 | BFD_ASSERT (globals != NULL); |
d70910e8 | 2514 | |
252b5132 RH |
2515 | if (globals->bfd_of_glue_owner != NULL) |
2516 | { | |
2517 | if (! _bfd_coff_link_input_bfd (pfinfo, globals->bfd_of_glue_owner)) | |
b34976b6 | 2518 | return FALSE; |
d70910e8 | 2519 | |
b34976b6 | 2520 | globals->bfd_of_glue_owner->output_has_begun = TRUE; |
252b5132 | 2521 | } |
d70910e8 | 2522 | |
5a6c6817 | 2523 | return bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
252b5132 RH |
2524 | } |
2525 | ||
2b5c217d NC |
2526 | #ifndef bfd_pe_print_pdata |
2527 | #define bfd_pe_print_pdata NULL | |
2528 | #endif | |
2529 | ||
252b5132 RH |
2530 | #include "coffcode.h" |
2531 | ||
c3c89269 NC |
2532 | #ifndef TARGET_LITTLE_SYM |
2533 | #define TARGET_LITTLE_SYM armcoff_little_vec | |
252b5132 | 2534 | #endif |
c3c89269 NC |
2535 | #ifndef TARGET_LITTLE_NAME |
2536 | #define TARGET_LITTLE_NAME "coff-arm-little" | |
252b5132 | 2537 | #endif |
c3c89269 NC |
2538 | #ifndef TARGET_BIG_SYM |
2539 | #define TARGET_BIG_SYM armcoff_big_vec | |
252b5132 | 2540 | #endif |
c3c89269 NC |
2541 | #ifndef TARGET_BIG_NAME |
2542 | #define TARGET_BIG_NAME "coff-arm-big" | |
252b5132 | 2543 | #endif |
252b5132 | 2544 | |
c3c89269 NC |
2545 | #ifndef TARGET_UNDERSCORE |
2546 | #define TARGET_UNDERSCORE 0 | |
252b5132 | 2547 | #endif |
c3c89269 | 2548 | |
f78c5281 | 2549 | #ifndef EXTRA_S_FLAGS |
c3c89269 | 2550 | #ifdef COFF_WITH_PE |
20650579 | 2551 | #define EXTRA_S_FLAGS (SEC_CODE | SEC_LINK_ONCE | SEC_LINK_DUPLICATES) |
252b5132 | 2552 | #else |
20650579 | 2553 | #define EXTRA_S_FLAGS SEC_CODE |
252b5132 | 2554 | #endif |
f78c5281 | 2555 | #endif |
252b5132 | 2556 | |
c3c89269 NC |
2557 | /* Forward declaration for use initialising alternative_target field. */ |
2558 | extern const bfd_target TARGET_BIG_SYM ; | |
252b5132 | 2559 | |
c3c89269 | 2560 | /* Target vectors. */ |
3fa78519 SS |
2561 | CREATE_LITTLE_COFF_TARGET_VEC (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_BIG_SYM, COFF_SWAP_TABLE) |
2562 | CREATE_BIG_COFF_TARGET_VEC (TARGET_BIG_SYM, TARGET_BIG_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_LITTLE_SYM, COFF_SWAP_TABLE) |