Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for ARM COFF files. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
1049f94e | 3 | 2000, 2001, 2002, 2003 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
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. | |
18 | ||
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 | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | ||
27 | #include "coff/arm.h" | |
28 | ||
29 | #include "coff/internal.h" | |
30 | ||
31 | #ifdef COFF_WITH_PE | |
32 | #include "coff/pe.h" | |
33 | #endif | |
34 | ||
35 | #include "libcoff.h" | |
36 | ||
37 | /* Macros for manipulation the bits in the flags field of the coff data | |
38 | structure. */ | |
dc810e39 AM |
39 | #define APCS_26_FLAG(abfd) \ |
40 | (coff_data (abfd)->flags & F_APCS_26) | |
41 | ||
42 | #define APCS_FLOAT_FLAG(abfd) \ | |
43 | (coff_data (abfd)->flags & F_APCS_FLOAT) | |
44 | ||
45 | #define PIC_FLAG(abfd) \ | |
46 | (coff_data (abfd)->flags & F_PIC) | |
47 | ||
48 | #define APCS_SET(abfd) \ | |
49 | (coff_data (abfd)->flags & F_APCS_SET) | |
50 | ||
51 | #define SET_APCS_FLAGS(abfd, flgs) \ | |
52 | do \ | |
53 | { \ | |
54 | coff_data (abfd)->flags &= ~(F_APCS_26 | F_APCS_FLOAT | F_PIC); \ | |
55 | coff_data (abfd)->flags |= (flgs) | F_APCS_SET; \ | |
56 | } \ | |
57 | while (0) | |
58 | ||
59 | #define INTERWORK_FLAG(abfd) \ | |
60 | (coff_data (abfd)->flags & F_INTERWORK) | |
61 | ||
62 | #define INTERWORK_SET(abfd) \ | |
63 | (coff_data (abfd)->flags & F_INTERWORK_SET) | |
64 | ||
65 | #define SET_INTERWORK_FLAG(abfd, flg) \ | |
66 | do \ | |
67 | { \ | |
68 | coff_data (abfd)->flags &= ~F_INTERWORK; \ | |
69 | coff_data (abfd)->flags |= (flg) | F_INTERWORK_SET; \ | |
70 | } \ | |
71 | while (0) | |
af74ae99 NC |
72 | |
73 | #ifndef NUM_ELEM | |
74 | #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0])) | |
75 | #endif | |
d70910e8 | 76 | |
252b5132 RH |
77 | typedef enum {bunknown, b9, b12, b23} thumb_pcrel_branchtype; |
78 | /* some typedefs for holding instructions */ | |
79 | typedef unsigned long int insn32; | |
80 | typedef unsigned short int insn16; | |
81 | ||
252b5132 | 82 | /* Forward declarations for stupid compilers. */ |
b34976b6 | 83 | static bfd_boolean coff_arm_relocate_section |
252b5132 RH |
84 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
85 | struct internal_reloc *, struct internal_syment *, asection **)); | |
86 | static bfd_reloc_status_type aoutarm_fix_pcrel_26_done | |
87 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
88 | static bfd_reloc_status_type aoutarm_fix_pcrel_26 | |
89 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
7831a775 | 90 | #ifndef ARM_WINCE |
252b5132 RH |
91 | static bfd_reloc_status_type coff_thumb_pcrel_23 |
92 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
93 | static bfd_reloc_status_type coff_thumb_pcrel_9 |
94 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
7831a775 NC |
95 | static insn32 insert_thumb_branch |
96 | PARAMS ((insn32, int)); | |
97 | #endif | |
98 | static bfd_reloc_status_type coff_thumb_pcrel_12 | |
99 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
252b5132 RH |
100 | static bfd_reloc_status_type coff_arm_reloc |
101 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
b34976b6 | 102 | static bfd_boolean coff_arm_adjust_symndx |
252b5132 | 103 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, |
b34976b6 | 104 | asection *, struct internal_reloc *, bfd_boolean *)); |
d70910e8 | 105 | static reloc_howto_type * coff_arm_rtype_to_howto |
252b5132 | 106 | PARAMS ((bfd *, asection *, struct internal_reloc *, |
dc810e39 AM |
107 | struct coff_link_hash_entry *, struct internal_syment *, |
108 | bfd_vma *)); | |
252b5132 RH |
109 | static bfd_reloc_status_type coff_thumb_pcrel_common |
110 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **, | |
111 | thumb_pcrel_branchtype)); | |
dc810e39 | 112 | static const struct reloc_howto_struct * coff_arm_reloc_type_lookup |
252b5132 RH |
113 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
114 | static struct bfd_link_hash_table * coff_arm_link_hash_table_create | |
115 | PARAMS ((bfd *)); | |
252b5132 | 116 | static struct coff_link_hash_entry * find_thumb_glue |
dc810e39 | 117 | PARAMS ((struct bfd_link_info *, const char *, bfd *)); |
252b5132 | 118 | static struct coff_link_hash_entry * find_arm_glue |
dc810e39 | 119 | PARAMS ((struct bfd_link_info *, const char *, bfd *)); |
e049a0de | 120 | #ifndef COFF_IMAGE_WITH_PE |
252b5132 RH |
121 | static void record_arm_to_thumb_glue |
122 | PARAMS ((struct bfd_link_info *, struct coff_link_hash_entry *)); | |
7831a775 | 123 | #ifndef ARM_WINCE |
252b5132 RH |
124 | static void record_thumb_to_arm_glue |
125 | PARAMS ((struct bfd_link_info *, struct coff_link_hash_entry *)); | |
e049a0de | 126 | #endif |
7831a775 | 127 | #endif |
b34976b6 | 128 | static bfd_boolean coff_arm_merge_private_bfd_data |
252b5132 | 129 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 130 | static bfd_boolean coff_arm_print_private_bfd_data |
252b5132 | 131 | PARAMS ((bfd *, PTR)); |
b34976b6 | 132 | static bfd_boolean _bfd_coff_arm_set_private_flags |
252b5132 | 133 | PARAMS ((bfd *, flagword)); |
b34976b6 | 134 | static bfd_boolean coff_arm_copy_private_bfd_data |
252b5132 | 135 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 136 | static bfd_boolean coff_arm_is_local_label_name |
252b5132 | 137 | PARAMS ((bfd *, const char *)); |
b34976b6 | 138 | static bfd_boolean coff_arm_link_output_has_begun |
252b5132 | 139 | PARAMS ((bfd *, struct coff_final_link_info *)); |
b34976b6 | 140 | static bfd_boolean coff_arm_final_link_postscript |
252b5132 | 141 | PARAMS ((bfd *, struct coff_final_link_info *)); |
917583ad NC |
142 | static void arm_emit_base_file_entry |
143 | PARAMS ((struct bfd_link_info *, bfd *, asection *, bfd_vma)); | |
252b5132 RH |
144 | |
145 | /* The linker script knows the section names for placement. | |
146 | The entry_names are used to do simple name mangling on the stubs. | |
147 | Given a function name, and its type, the stub can be found. The | |
917583ad | 148 | name can be changed. The only requirement is the %s be present. */ |
d70910e8 | 149 | |
252b5132 RH |
150 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
151 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
152 | ||
153 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
154 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
155 | ||
d70910e8 | 156 | /* Used by the assembler. */ |
917583ad | 157 | |
252b5132 RH |
158 | static bfd_reloc_status_type |
159 | coff_arm_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd, | |
160 | error_message) | |
161 | bfd *abfd; | |
162 | arelent *reloc_entry; | |
5f771d47 | 163 | asymbol *symbol ATTRIBUTE_UNUSED; |
252b5132 | 164 | PTR data; |
5f771d47 | 165 | asection *input_section ATTRIBUTE_UNUSED; |
252b5132 | 166 | bfd *output_bfd; |
5f771d47 | 167 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
168 | { |
169 | symvalue diff; | |
170 | if (output_bfd == (bfd *) NULL) | |
171 | return bfd_reloc_continue; | |
172 | ||
173 | diff = reloc_entry->addend; | |
174 | ||
dc810e39 AM |
175 | #define DOIT(x) \ |
176 | x = ((x & ~howto->dst_mask) \ | |
177 | | (((x & howto->src_mask) + diff) & howto->dst_mask)) | |
252b5132 RH |
178 | |
179 | if (diff != 0) | |
180 | { | |
181 | reloc_howto_type *howto = reloc_entry->howto; | |
182 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; | |
183 | ||
184 | switch (howto->size) | |
185 | { | |
186 | case 0: | |
187 | { | |
188 | char x = bfd_get_8 (abfd, addr); | |
189 | DOIT (x); | |
190 | bfd_put_8 (abfd, x, addr); | |
191 | } | |
192 | break; | |
193 | ||
194 | case 1: | |
195 | { | |
196 | short x = bfd_get_16 (abfd, addr); | |
197 | DOIT (x); | |
dc810e39 | 198 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
199 | } |
200 | break; | |
201 | ||
202 | case 2: | |
203 | { | |
204 | long x = bfd_get_32 (abfd, addr); | |
205 | DOIT (x); | |
dc810e39 | 206 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
207 | } |
208 | break; | |
209 | ||
210 | default: | |
211 | abort (); | |
212 | } | |
213 | } | |
214 | ||
215 | /* Now let bfd_perform_relocation finish everything up. */ | |
216 | return bfd_reloc_continue; | |
217 | } | |
218 | ||
219 | /* If USER_LABEL_PREFIX is defined as "_" (see coff_arm_is_local_label_name() | |
220 | in this file), then TARGET_UNDERSCORE should be defined, otherwise it | |
221 | should not. */ | |
222 | #ifndef TARGET_UNDERSCORE | |
223 | #define TARGET_UNDERSCORE '_' | |
224 | #endif | |
225 | ||
226 | #ifndef PCRELOFFSET | |
b34976b6 | 227 | #define PCRELOFFSET TRUE |
252b5132 RH |
228 | #endif |
229 | ||
230 | /* These most certainly belong somewhere else. Just had to get rid of | |
17505c5c | 231 | the manifest constants in the code. */ |
252b5132 RH |
232 | #define ARM_8 0 |
233 | #define ARM_16 1 | |
234 | #define ARM_32 2 | |
235 | #define ARM_26 3 | |
236 | #define ARM_DISP8 4 | |
237 | #define ARM_DISP16 5 | |
238 | #define ARM_DISP32 6 | |
239 | #define ARM_26D 7 | |
240 | /* 8 is unused */ | |
241 | #define ARM_NEG16 9 | |
242 | #define ARM_NEG32 10 | |
243 | #define ARM_RVA32 11 | |
244 | #define ARM_THUMB9 12 | |
245 | #define ARM_THUMB12 13 | |
246 | #define ARM_THUMB23 14 | |
247 | ||
17505c5c NC |
248 | #ifdef ARM_WINCE |
249 | #undef ARM_32 | |
250 | #undef ARM_RVA32 | |
251 | #undef ARM_26 | |
252 | #undef ARM_THUMB12 | |
253 | #undef ARM_26D | |
254 | ||
255 | #define ARM_32 1 | |
256 | #define ARM_RVA32 2 | |
257 | #define ARM_26 3 | |
258 | #define ARM_THUMB12 4 | |
259 | #define ARM_26D 5 | |
260 | #define ARM_SECTION 14 | |
261 | #define ARM_SECREL 15 | |
262 | #endif | |
263 | ||
d70910e8 | 264 | static reloc_howto_type aoutarm_std_reloc_howto[] = |
917583ad | 265 | { |
17505c5c | 266 | #ifdef ARM_WINCE |
917583ad NC |
267 | EMPTY_HOWTO (-1), |
268 | HOWTO (ARM_32, | |
269 | 0, | |
270 | 2, | |
271 | 32, | |
b34976b6 | 272 | FALSE, |
917583ad NC |
273 | 0, |
274 | complain_overflow_bitfield, | |
275 | coff_arm_reloc, | |
276 | "ARM_32", | |
b34976b6 | 277 | TRUE, |
917583ad NC |
278 | 0xffffffff, |
279 | 0xffffffff, | |
280 | PCRELOFFSET), | |
281 | HOWTO (ARM_RVA32, | |
282 | 0, | |
283 | 2, | |
284 | 32, | |
b34976b6 | 285 | FALSE, |
917583ad NC |
286 | 0, |
287 | complain_overflow_bitfield, | |
288 | coff_arm_reloc, | |
289 | "ARM_RVA32", | |
b34976b6 | 290 | TRUE, |
917583ad NC |
291 | 0xffffffff, |
292 | 0xffffffff, | |
293 | PCRELOFFSET), | |
294 | HOWTO (ARM_26, | |
295 | 2, | |
296 | 2, | |
297 | 24, | |
b34976b6 | 298 | TRUE, |
917583ad NC |
299 | 0, |
300 | complain_overflow_signed, | |
301 | aoutarm_fix_pcrel_26 , | |
302 | "ARM_26", | |
b34976b6 | 303 | FALSE, |
917583ad NC |
304 | 0x00ffffff, |
305 | 0x00ffffff, | |
306 | PCRELOFFSET), | |
307 | HOWTO (ARM_THUMB12, | |
308 | 1, | |
309 | 1, | |
310 | 11, | |
b34976b6 | 311 | TRUE, |
917583ad NC |
312 | 0, |
313 | complain_overflow_signed, | |
314 | coff_thumb_pcrel_12 , | |
315 | "ARM_THUMB12", | |
b34976b6 | 316 | FALSE, |
917583ad NC |
317 | 0x000007ff, |
318 | 0x000007ff, | |
319 | PCRELOFFSET), | |
320 | HOWTO (ARM_26D, | |
321 | 2, | |
322 | 2, | |
323 | 24, | |
b34976b6 | 324 | FALSE, |
917583ad NC |
325 | 0, |
326 | complain_overflow_dont, | |
327 | aoutarm_fix_pcrel_26_done, | |
328 | "ARM_26D", | |
b34976b6 | 329 | TRUE, |
917583ad NC |
330 | 0x00ffffff, |
331 | 0x0, | |
b34976b6 | 332 | FALSE), |
917583ad NC |
333 | EMPTY_HOWTO (-1), |
334 | EMPTY_HOWTO (-1), | |
335 | EMPTY_HOWTO (-1), | |
336 | EMPTY_HOWTO (-1), | |
337 | EMPTY_HOWTO (-1), | |
338 | EMPTY_HOWTO (-1), | |
339 | EMPTY_HOWTO (-1), | |
340 | EMPTY_HOWTO (-1), | |
341 | HOWTO (ARM_SECTION, | |
342 | 0, | |
343 | 1, | |
344 | 16, | |
b34976b6 | 345 | FALSE, |
917583ad NC |
346 | 0, |
347 | complain_overflow_bitfield, | |
348 | coff_arm_reloc, | |
349 | "ARM_16", | |
b34976b6 | 350 | TRUE, |
917583ad NC |
351 | 0x0000ffff, |
352 | 0x0000ffff, | |
353 | PCRELOFFSET), | |
354 | HOWTO (ARM_SECREL, | |
355 | 0, | |
356 | 2, | |
357 | 32, | |
b34976b6 | 358 | FALSE, |
917583ad NC |
359 | 0, |
360 | complain_overflow_bitfield, | |
361 | coff_arm_reloc, | |
362 | "ARM_32", | |
b34976b6 | 363 | TRUE, |
917583ad NC |
364 | 0xffffffff, |
365 | 0xffffffff, | |
366 | PCRELOFFSET), | |
17505c5c | 367 | #else /* not ARM_WINCE */ |
b34976b6 | 368 | HOWTO (ARM_8, /* type */ |
917583ad NC |
369 | 0, /* rightshift */ |
370 | 0, /* size */ | |
371 | 8, /* bitsize */ | |
b34976b6 | 372 | FALSE, /* pc_relative */ |
917583ad NC |
373 | 0, /* bitpos */ |
374 | complain_overflow_bitfield, /* complain_on_overflow */ | |
b34976b6 | 375 | coff_arm_reloc, /* special_function */ |
917583ad | 376 | "ARM_8", /* name */ |
b34976b6 | 377 | TRUE, /* partial_inplace */ |
917583ad NC |
378 | 0x000000ff, /* src_mask */ |
379 | 0x000000ff, /* dst_mask */ | |
380 | PCRELOFFSET /* pcrel_offset */), | |
381 | HOWTO (ARM_16, | |
382 | 0, | |
383 | 1, | |
384 | 16, | |
b34976b6 | 385 | FALSE, |
917583ad NC |
386 | 0, |
387 | complain_overflow_bitfield, | |
388 | coff_arm_reloc, | |
389 | "ARM_16", | |
b34976b6 | 390 | TRUE, |
917583ad NC |
391 | 0x0000ffff, |
392 | 0x0000ffff, | |
393 | PCRELOFFSET), | |
394 | HOWTO (ARM_32, | |
395 | 0, | |
396 | 2, | |
397 | 32, | |
b34976b6 | 398 | FALSE, |
917583ad NC |
399 | 0, |
400 | complain_overflow_bitfield, | |
401 | coff_arm_reloc, | |
402 | "ARM_32", | |
b34976b6 | 403 | TRUE, |
917583ad NC |
404 | 0xffffffff, |
405 | 0xffffffff, | |
406 | PCRELOFFSET), | |
407 | HOWTO (ARM_26, | |
408 | 2, | |
409 | 2, | |
410 | 24, | |
b34976b6 | 411 | TRUE, |
917583ad NC |
412 | 0, |
413 | complain_overflow_signed, | |
414 | aoutarm_fix_pcrel_26 , | |
415 | "ARM_26", | |
b34976b6 | 416 | FALSE, |
917583ad NC |
417 | 0x00ffffff, |
418 | 0x00ffffff, | |
419 | PCRELOFFSET), | |
420 | HOWTO (ARM_DISP8, | |
421 | 0, | |
422 | 0, | |
423 | 8, | |
b34976b6 | 424 | TRUE, |
917583ad NC |
425 | 0, |
426 | complain_overflow_signed, | |
427 | coff_arm_reloc, | |
428 | "ARM_DISP8", | |
b34976b6 | 429 | TRUE, |
917583ad NC |
430 | 0x000000ff, |
431 | 0x000000ff, | |
b34976b6 | 432 | TRUE), |
917583ad NC |
433 | HOWTO (ARM_DISP16, |
434 | 0, | |
435 | 1, | |
436 | 16, | |
b34976b6 | 437 | TRUE, |
917583ad NC |
438 | 0, |
439 | complain_overflow_signed, | |
440 | coff_arm_reloc, | |
441 | "ARM_DISP16", | |
b34976b6 | 442 | TRUE, |
917583ad NC |
443 | 0x0000ffff, |
444 | 0x0000ffff, | |
b34976b6 | 445 | TRUE), |
917583ad NC |
446 | HOWTO (ARM_DISP32, |
447 | 0, | |
448 | 2, | |
449 | 32, | |
b34976b6 | 450 | TRUE, |
917583ad NC |
451 | 0, |
452 | complain_overflow_signed, | |
453 | coff_arm_reloc, | |
454 | "ARM_DISP32", | |
b34976b6 | 455 | TRUE, |
917583ad NC |
456 | 0xffffffff, |
457 | 0xffffffff, | |
b34976b6 | 458 | TRUE), |
917583ad NC |
459 | HOWTO (ARM_26D, |
460 | 2, | |
461 | 2, | |
462 | 24, | |
b34976b6 | 463 | FALSE, |
917583ad NC |
464 | 0, |
465 | complain_overflow_dont, | |
466 | aoutarm_fix_pcrel_26_done, | |
467 | "ARM_26D", | |
b34976b6 | 468 | TRUE, |
917583ad NC |
469 | 0x00ffffff, |
470 | 0x0, | |
b34976b6 | 471 | FALSE), |
917583ad NC |
472 | /* 8 is unused */ |
473 | EMPTY_HOWTO (-1), | |
474 | HOWTO (ARM_NEG16, | |
475 | 0, | |
476 | -1, | |
477 | 16, | |
b34976b6 | 478 | FALSE, |
917583ad NC |
479 | 0, |
480 | complain_overflow_bitfield, | |
481 | coff_arm_reloc, | |
482 | "ARM_NEG16", | |
b34976b6 | 483 | TRUE, |
917583ad NC |
484 | 0x0000ffff, |
485 | 0x0000ffff, | |
b34976b6 | 486 | FALSE), |
917583ad NC |
487 | HOWTO (ARM_NEG32, |
488 | 0, | |
489 | -2, | |
490 | 32, | |
b34976b6 | 491 | FALSE, |
917583ad NC |
492 | 0, |
493 | complain_overflow_bitfield, | |
494 | coff_arm_reloc, | |
495 | "ARM_NEG32", | |
b34976b6 | 496 | TRUE, |
917583ad NC |
497 | 0xffffffff, |
498 | 0xffffffff, | |
b34976b6 | 499 | FALSE), |
917583ad NC |
500 | HOWTO (ARM_RVA32, |
501 | 0, | |
502 | 2, | |
503 | 32, | |
b34976b6 | 504 | FALSE, |
917583ad NC |
505 | 0, |
506 | complain_overflow_bitfield, | |
507 | coff_arm_reloc, | |
508 | "ARM_RVA32", | |
b34976b6 | 509 | TRUE, |
917583ad NC |
510 | 0xffffffff, |
511 | 0xffffffff, | |
512 | PCRELOFFSET), | |
513 | HOWTO (ARM_THUMB9, | |
514 | 1, | |
515 | 1, | |
516 | 8, | |
b34976b6 | 517 | TRUE, |
917583ad NC |
518 | 0, |
519 | complain_overflow_signed, | |
520 | coff_thumb_pcrel_9 , | |
521 | "ARM_THUMB9", | |
b34976b6 | 522 | FALSE, |
917583ad NC |
523 | 0x000000ff, |
524 | 0x000000ff, | |
525 | PCRELOFFSET), | |
526 | HOWTO (ARM_THUMB12, | |
527 | 1, | |
528 | 1, | |
529 | 11, | |
b34976b6 | 530 | TRUE, |
917583ad NC |
531 | 0, |
532 | complain_overflow_signed, | |
533 | coff_thumb_pcrel_12 , | |
534 | "ARM_THUMB12", | |
b34976b6 | 535 | FALSE, |
917583ad NC |
536 | 0x000007ff, |
537 | 0x000007ff, | |
538 | PCRELOFFSET), | |
539 | HOWTO (ARM_THUMB23, | |
540 | 1, | |
541 | 2, | |
542 | 22, | |
b34976b6 | 543 | TRUE, |
917583ad NC |
544 | 0, |
545 | complain_overflow_signed, | |
546 | coff_thumb_pcrel_23 , | |
547 | "ARM_THUMB23", | |
b34976b6 | 548 | FALSE, |
917583ad NC |
549 | 0x07ff07ff, |
550 | 0x07ff07ff, | |
551 | PCRELOFFSET) | |
17505c5c | 552 | #endif /* not ARM_WINCE */ |
917583ad | 553 | }; |
252b5132 | 554 | |
af74ae99 NC |
555 | #define NUM_RELOCS NUM_ELEM (aoutarm_std_reloc_howto) |
556 | ||
252b5132 | 557 | #ifdef COFF_WITH_PE |
b34976b6 AM |
558 | static bfd_boolean in_reloc_p PARAMS ((bfd *, reloc_howto_type *)); |
559 | /* Return TRUE if this relocation should | |
d70910e8 | 560 | appear in the output .reloc section. */ |
252b5132 | 561 | |
b34976b6 | 562 | static bfd_boolean |
252b5132 | 563 | in_reloc_p (abfd, howto) |
5f771d47 | 564 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
565 | reloc_howto_type * howto; |
566 | { | |
567 | return !howto->pc_relative && howto->type != ARM_RVA32; | |
d70910e8 | 568 | } |
252b5132 RH |
569 | #endif |
570 | ||
af74ae99 NC |
571 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
572 | (cache_ptr)->howto = \ | |
573 | (dst)->r_type < NUM_RELOCS \ | |
574 | ? aoutarm_std_reloc_howto + (dst)->r_type \ | |
575 | : NULL | |
252b5132 RH |
576 | |
577 | #define coff_rtype_to_howto coff_arm_rtype_to_howto | |
578 | ||
579 | static reloc_howto_type * | |
580 | coff_arm_rtype_to_howto (abfd, sec, rel, h, sym, addendp) | |
5f771d47 | 581 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
582 | asection *sec; |
583 | struct internal_reloc *rel; | |
5f771d47 ILT |
584 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED; |
585 | struct internal_syment *sym ATTRIBUTE_UNUSED; | |
252b5132 RH |
586 | bfd_vma *addendp; |
587 | { | |
af74ae99 | 588 | reloc_howto_type * howto; |
252b5132 | 589 | |
af74ae99 NC |
590 | if (rel->r_type >= NUM_RELOCS) |
591 | return NULL; | |
d70910e8 | 592 | |
252b5132 RH |
593 | howto = aoutarm_std_reloc_howto + rel->r_type; |
594 | ||
595 | if (rel->r_type == ARM_RVA32) | |
17505c5c | 596 | *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
252b5132 RH |
597 | |
598 | return howto; | |
252b5132 | 599 | } |
917583ad | 600 | |
d70910e8 | 601 | /* Used by the assembler. */ |
252b5132 RH |
602 | |
603 | static bfd_reloc_status_type | |
604 | aoutarm_fix_pcrel_26_done (abfd, reloc_entry, symbol, data, input_section, | |
605 | output_bfd, error_message) | |
5f771d47 ILT |
606 | bfd *abfd ATTRIBUTE_UNUSED; |
607 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
608 | asymbol *symbol ATTRIBUTE_UNUSED; | |
609 | PTR data ATTRIBUTE_UNUSED; | |
610 | asection *input_section ATTRIBUTE_UNUSED; | |
611 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
612 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
613 | { |
614 | /* This is dead simple at present. */ | |
615 | return bfd_reloc_ok; | |
616 | } | |
617 | ||
d70910e8 | 618 | /* Used by the assembler. */ |
252b5132 RH |
619 | |
620 | static bfd_reloc_status_type | |
621 | aoutarm_fix_pcrel_26 (abfd, reloc_entry, symbol, data, input_section, | |
622 | output_bfd, error_message) | |
623 | bfd *abfd; | |
624 | arelent *reloc_entry; | |
625 | asymbol *symbol; | |
626 | PTR data; | |
627 | asection *input_section; | |
628 | bfd *output_bfd; | |
5f771d47 | 629 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
630 | { |
631 | bfd_vma relocation; | |
632 | bfd_size_type addr = reloc_entry->address; | |
633 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
634 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
d70910e8 | 635 | |
917583ad | 636 | /* If this is an undefined symbol, return error. */ |
252b5132 RH |
637 | if (symbol->section == &bfd_und_section |
638 | && (symbol->flags & BSF_WEAK) == 0) | |
639 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
640 | ||
641 | /* If the sections are different, and we are doing a partial relocation, | |
642 | just ignore it for now. */ | |
643 | if (symbol->section->name != input_section->name | |
644 | && output_bfd != (bfd *)NULL) | |
645 | return bfd_reloc_continue; | |
646 | ||
647 | relocation = (target & 0x00ffffff) << 2; | |
917583ad | 648 | relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend. */ |
252b5132 RH |
649 | relocation += symbol->value; |
650 | relocation += symbol->section->output_section->vma; | |
651 | relocation += symbol->section->output_offset; | |
652 | relocation += reloc_entry->addend; | |
653 | relocation -= input_section->output_section->vma; | |
654 | relocation -= input_section->output_offset; | |
655 | relocation -= addr; | |
d70910e8 | 656 | |
252b5132 RH |
657 | if (relocation & 3) |
658 | return bfd_reloc_overflow; | |
659 | ||
917583ad | 660 | /* Check for overflow. */ |
252b5132 RH |
661 | if (relocation & 0x02000000) |
662 | { | |
663 | if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff) | |
664 | flag = bfd_reloc_overflow; | |
665 | } | |
dc810e39 | 666 | else if (relocation & ~(bfd_vma) 0x03ffffff) |
252b5132 RH |
667 | flag = bfd_reloc_overflow; |
668 | ||
669 | target &= ~0x00ffffff; | |
670 | target |= (relocation >> 2) & 0x00ffffff; | |
dc810e39 | 671 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
672 | |
673 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
674 | Strictly this is only necessary if we are doing a partial relocation. */ | |
675 | reloc_entry->howto = &aoutarm_std_reloc_howto[ARM_26D]; | |
676 | ||
677 | return flag; | |
678 | } | |
679 | ||
680 | static bfd_reloc_status_type | |
681 | coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, input_section, | |
682 | output_bfd, error_message, btype) | |
683 | bfd *abfd; | |
684 | arelent *reloc_entry; | |
685 | asymbol *symbol; | |
686 | PTR data; | |
687 | asection *input_section; | |
688 | bfd *output_bfd; | |
5f771d47 | 689 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
690 | thumb_pcrel_branchtype btype; |
691 | { | |
692 | bfd_vma relocation = 0; | |
693 | bfd_size_type addr = reloc_entry->address; | |
694 | long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); | |
695 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
696 | bfd_vma dstmsk; | |
697 | bfd_vma offmsk; | |
698 | bfd_vma signbit; | |
699 | ||
700 | /* NOTE: This routine is currently used by GAS, but not by the link | |
701 | phase. */ | |
702 | ||
703 | switch (btype) | |
704 | { | |
705 | case b9: | |
706 | dstmsk = 0x000000ff; | |
707 | offmsk = 0x000001fe; | |
708 | signbit = 0x00000100; | |
709 | break; | |
710 | ||
711 | case b12: | |
712 | dstmsk = 0x000007ff; | |
713 | offmsk = 0x00000ffe; | |
714 | signbit = 0x00000800; | |
715 | break; | |
716 | ||
717 | case b23: | |
718 | dstmsk = 0x07ff07ff; | |
719 | offmsk = 0x007fffff; | |
720 | signbit = 0x00400000; | |
721 | break; | |
722 | ||
723 | default: | |
724 | abort (); | |
725 | } | |
d70910e8 | 726 | |
917583ad | 727 | /* If this is an undefined symbol, return error. */ |
252b5132 RH |
728 | if (symbol->section == &bfd_und_section |
729 | && (symbol->flags & BSF_WEAK) == 0) | |
730 | return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; | |
731 | ||
732 | /* If the sections are different, and we are doing a partial relocation, | |
733 | just ignore it for now. */ | |
734 | if (symbol->section->name != input_section->name | |
735 | && output_bfd != (bfd *)NULL) | |
736 | return bfd_reloc_continue; | |
737 | ||
738 | switch (btype) | |
739 | { | |
740 | case b9: | |
741 | case b12: | |
742 | relocation = ((target & dstmsk) << 1); | |
743 | break; | |
744 | ||
745 | case b23: | |
746 | if (bfd_big_endian (abfd)) | |
747 | relocation = ((target & 0x7ff) << 1) | ((target & 0x07ff0000) >> 4); | |
748 | else | |
749 | relocation = ((target & 0x7ff) << 12) | ((target & 0x07ff0000) >> 15); | |
750 | break; | |
751 | ||
752 | default: | |
753 | abort (); | |
754 | } | |
755 | ||
917583ad | 756 | relocation = (relocation ^ signbit) - signbit; /* Sign extend. */ |
252b5132 RH |
757 | relocation += symbol->value; |
758 | relocation += symbol->section->output_section->vma; | |
759 | relocation += symbol->section->output_offset; | |
760 | relocation += reloc_entry->addend; | |
761 | relocation -= input_section->output_section->vma; | |
762 | relocation -= input_section->output_offset; | |
763 | relocation -= addr; | |
764 | ||
765 | if (relocation & 1) | |
766 | return bfd_reloc_overflow; | |
767 | ||
917583ad | 768 | /* Check for overflow. */ |
252b5132 RH |
769 | if (relocation & signbit) |
770 | { | |
771 | if ((relocation & ~offmsk) != ~offmsk) | |
772 | flag = bfd_reloc_overflow; | |
773 | } | |
774 | else if (relocation & ~offmsk) | |
775 | flag = bfd_reloc_overflow; | |
776 | ||
777 | target &= ~dstmsk; | |
778 | switch (btype) | |
779 | { | |
780 | case b9: | |
781 | case b12: | |
782 | target |= (relocation >> 1); | |
783 | break; | |
784 | ||
785 | case b23: | |
786 | if (bfd_big_endian (abfd)) | |
dc810e39 AM |
787 | target |= (((relocation & 0xfff) >> 1) |
788 | | ((relocation << 4) & 0x07ff0000)); | |
252b5132 | 789 | else |
dc810e39 AM |
790 | target |= (((relocation & 0xffe) << 15) |
791 | | ((relocation >> 12) & 0x7ff)); | |
252b5132 RH |
792 | break; |
793 | ||
794 | default: | |
795 | abort (); | |
796 | } | |
797 | ||
dc810e39 | 798 | bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
252b5132 RH |
799 | |
800 | /* Now the ARM magic... Change the reloc type so that it is marked as done. | |
801 | Strictly this is only necessary if we are doing a partial relocation. */ | |
802 | reloc_entry->howto = & aoutarm_std_reloc_howto [ARM_26D]; | |
d70910e8 | 803 | |
917583ad | 804 | /* TODO: We should possibly have DONE entries for the THUMB PCREL relocations. */ |
252b5132 RH |
805 | return flag; |
806 | } | |
807 | ||
7831a775 | 808 | #ifndef ARM_WINCE |
252b5132 RH |
809 | static bfd_reloc_status_type |
810 | coff_thumb_pcrel_23 (abfd, reloc_entry, symbol, data, input_section, | |
811 | output_bfd, error_message) | |
812 | bfd *abfd; | |
813 | arelent *reloc_entry; | |
814 | asymbol *symbol; | |
815 | PTR data; | |
816 | asection *input_section; | |
817 | bfd *output_bfd; | |
818 | char **error_message; | |
819 | { | |
820 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 AM |
821 | input_section, output_bfd, error_message, |
822 | b23); | |
252b5132 RH |
823 | } |
824 | ||
825 | static bfd_reloc_status_type | |
7831a775 | 826 | coff_thumb_pcrel_9 (abfd, reloc_entry, symbol, data, input_section, |
252b5132 RH |
827 | output_bfd, error_message) |
828 | bfd *abfd; | |
829 | arelent *reloc_entry; | |
830 | asymbol *symbol; | |
831 | PTR data; | |
832 | asection *input_section; | |
833 | bfd *output_bfd; | |
834 | char **error_message; | |
835 | { | |
836 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 | 837 | input_section, output_bfd, error_message, |
7831a775 | 838 | b9); |
252b5132 | 839 | } |
7831a775 | 840 | #endif /* not ARM_WINCE */ |
252b5132 RH |
841 | |
842 | static bfd_reloc_status_type | |
7831a775 | 843 | coff_thumb_pcrel_12 (abfd, reloc_entry, symbol, data, input_section, |
252b5132 RH |
844 | output_bfd, error_message) |
845 | bfd *abfd; | |
846 | arelent *reloc_entry; | |
847 | asymbol *symbol; | |
848 | PTR data; | |
849 | asection *input_section; | |
850 | bfd *output_bfd; | |
851 | char **error_message; | |
852 | { | |
853 | return coff_thumb_pcrel_common (abfd, reloc_entry, symbol, data, | |
dc810e39 | 854 | input_section, output_bfd, error_message, |
7831a775 | 855 | b12); |
252b5132 RH |
856 | } |
857 | ||
dc810e39 | 858 | static const struct reloc_howto_struct * |
252b5132 RH |
859 | coff_arm_reloc_type_lookup (abfd, code) |
860 | bfd * abfd; | |
861 | bfd_reloc_code_real_type code; | |
862 | { | |
af74ae99 | 863 | #define ASTD(i,j) case i: return aoutarm_std_reloc_howto + j |
d70910e8 | 864 | |
252b5132 RH |
865 | if (code == BFD_RELOC_CTOR) |
866 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
867 | { | |
868 | case 32: | |
869 | code = BFD_RELOC_32; | |
870 | break; | |
917583ad | 871 | default: |
dc810e39 | 872 | return (const struct reloc_howto_struct *) 0; |
252b5132 RH |
873 | } |
874 | ||
875 | switch (code) | |
876 | { | |
17505c5c NC |
877 | #ifdef ARM_WINCE |
878 | ASTD (BFD_RELOC_32, ARM_32); | |
879 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
880 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
881 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); | |
882 | #else | |
252b5132 RH |
883 | ASTD (BFD_RELOC_8, ARM_8); |
884 | ASTD (BFD_RELOC_16, ARM_16); | |
885 | ASTD (BFD_RELOC_32, ARM_32); | |
886 | ASTD (BFD_RELOC_ARM_PCREL_BRANCH, ARM_26); | |
077b8428 | 887 | ASTD (BFD_RELOC_ARM_PCREL_BLX, ARM_26); |
252b5132 RH |
888 | ASTD (BFD_RELOC_8_PCREL, ARM_DISP8); |
889 | ASTD (BFD_RELOC_16_PCREL, ARM_DISP16); | |
890 | ASTD (BFD_RELOC_32_PCREL, ARM_DISP32); | |
891 | ASTD (BFD_RELOC_RVA, ARM_RVA32); | |
892 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH9, ARM_THUMB9); | |
893 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH12, ARM_THUMB12); | |
894 | ASTD (BFD_RELOC_THUMB_PCREL_BRANCH23, ARM_THUMB23); | |
f8f3c6cc | 895 | ASTD (BFD_RELOC_THUMB_PCREL_BLX, ARM_THUMB23); |
d70910e8 | 896 | #endif |
dc810e39 | 897 | default: return (const struct reloc_howto_struct *) 0; |
252b5132 RH |
898 | } |
899 | } | |
900 | ||
901 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) | |
902 | #define COFF_PAGE_SIZE 0x1000 | |
903 | /* Turn a howto into a reloc nunmber */ | |
904 | ||
905 | #define SELECT_RELOC(x,howto) { x.r_type = howto->type; } | |
906 | #define BADMAG(x) ARMBADMAG(x) | |
907 | #define ARM 1 /* Customize coffcode.h */ | |
908 | ||
7831a775 | 909 | #ifndef ARM_WINCE |
2106126f | 910 | /* Make sure that the 'r_offset' field is copied properly |
830629ab | 911 | so that identical binaries will compare the same. */ |
2106126f NC |
912 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
913 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 | |
7831a775 | 914 | #endif |
2106126f | 915 | |
252b5132 RH |
916 | /* Extend the coff_link_hash_table structure with a few ARM specific fields. |
917 | This allows us to store global data here without actually creating any | |
918 | global variables, which is a no-no in the BFD world. */ | |
919 | struct coff_arm_link_hash_table | |
917583ad NC |
920 | { |
921 | /* The original coff_link_hash_table structure. MUST be first field. */ | |
922 | struct coff_link_hash_table root; | |
d70910e8 | 923 | |
917583ad | 924 | /* The size in bytes of the section containg the Thumb-to-ARM glue. */ |
dc810e39 | 925 | bfd_size_type thumb_glue_size; |
d70910e8 | 926 | |
917583ad | 927 | /* The size in bytes of the section containg the ARM-to-Thumb glue. */ |
dc810e39 | 928 | bfd_size_type arm_glue_size; |
252b5132 | 929 | |
917583ad NC |
930 | /* An arbitary input BFD chosen to hold the glue sections. */ |
931 | bfd * bfd_of_glue_owner; | |
252b5132 | 932 | |
917583ad NC |
933 | /* Support interworking with old, non-interworking aware ARM code. */ |
934 | int support_old_code; | |
252b5132 RH |
935 | }; |
936 | ||
937 | /* Get the ARM coff linker hash table from a link_info structure. */ | |
938 | #define coff_arm_hash_table(info) \ | |
939 | ((struct coff_arm_link_hash_table *) ((info)->hash)) | |
940 | ||
941 | /* Create an ARM coff linker hash table. */ | |
942 | ||
943 | static struct bfd_link_hash_table * | |
944 | coff_arm_link_hash_table_create (abfd) | |
945 | bfd * abfd; | |
946 | { | |
947 | struct coff_arm_link_hash_table * ret; | |
dc810e39 | 948 | bfd_size_type amt = sizeof (struct coff_arm_link_hash_table); |
252b5132 | 949 | |
e2d34d7d | 950 | ret = (struct coff_arm_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
951 | if (ret == (struct coff_arm_link_hash_table *) NULL) |
952 | return NULL; | |
953 | ||
954 | if (! _bfd_coff_link_hash_table_init | |
955 | (& ret->root, abfd, _bfd_coff_link_hash_newfunc)) | |
956 | { | |
e2d34d7d | 957 | free (ret); |
252b5132 RH |
958 | return (struct bfd_link_hash_table *) NULL; |
959 | } | |
960 | ||
961 | ret->thumb_glue_size = 0; | |
962 | ret->arm_glue_size = 0; | |
963 | ret->bfd_of_glue_owner = NULL; | |
964 | ||
965 | return & ret->root.root; | |
966 | } | |
967 | ||
271025eb | 968 | static void |
252b5132 RH |
969 | arm_emit_base_file_entry (info, output_bfd, input_section, reloc_offset) |
970 | struct bfd_link_info *info; | |
971 | bfd *output_bfd; | |
972 | asection *input_section; | |
973 | bfd_vma reloc_offset; | |
974 | { | |
975 | bfd_vma addr = reloc_offset | |
976 | - input_section->vma | |
977 | + input_section->output_offset | |
978 | + input_section->output_section->vma; | |
979 | ||
917583ad NC |
980 | if (coff_data (output_bfd)->pe) |
981 | addr -= pe_data (output_bfd)->pe_opthdr.ImageBase; | |
982 | fwrite (& addr, 1, sizeof (addr), (FILE *) info->base_file); | |
252b5132 RH |
983 | |
984 | } | |
985 | \f | |
7831a775 | 986 | #ifndef ARM_WINCE |
252b5132 RH |
987 | /* The thumb form of a long branch is a bit finicky, because the offset |
988 | encoding is split over two fields, each in it's own instruction. They | |
d70910e8 | 989 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 990 | offset, insert the offset into the thumb branch and return finished |
d70910e8 | 991 | instruction. |
252b5132 | 992 | |
d70910e8 | 993 | It takes two thumb instructions to encode the target address. Each has |
252b5132 | 994 | 11 bits to invest. The upper 11 bits are stored in one (identifed by |
d70910e8 KH |
995 | H-0.. see below), the lower 11 bits are stored in the other (identified |
996 | by H-1). | |
252b5132 | 997 | |
d70910e8 | 998 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
999 | there you have it. |
1000 | ||
1001 | Op: 1111 = F, | |
1002 | H-0, upper address-0 = 000 | |
1003 | Op: 1111 = F, | |
1004 | H-1, lower address-0 = 800 | |
1005 | ||
d70910e8 | 1006 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
1007 | the lower one first. It probably doesn't matter. krk@cygnus.com |
1008 | ||
1009 | XXX: Actually the order does matter. The second instruction (H-1) | |
1010 | moves the computed address into the PC, so it must be the second one | |
1011 | in the sequence. The problem, however is that whilst little endian code | |
1012 | stores the instructions in HI then LOW order, big endian code does the | |
917583ad | 1013 | reverse. nickc@cygnus.com. */ |
252b5132 RH |
1014 | |
1015 | #define LOW_HI_ORDER 0xF800F000 | |
1016 | #define HI_LOW_ORDER 0xF000F800 | |
1017 | ||
1018 | static insn32 | |
1019 | insert_thumb_branch (br_insn, rel_off) | |
1020 | insn32 br_insn; | |
1021 | int rel_off; | |
1022 | { | |
1023 | unsigned int low_bits; | |
1024 | unsigned int high_bits; | |
1025 | ||
252b5132 RH |
1026 | BFD_ASSERT((rel_off & 1) != 1); |
1027 | ||
1028 | rel_off >>= 1; /* half word aligned address */ | |
1029 | low_bits = rel_off & 0x000007FF; /* the bottom 11 bits */ | |
1030 | high_bits = (rel_off >> 11) & 0x000007FF; /* the top 11 bits */ | |
1031 | ||
1032 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
1033 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
1034 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
1035 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
1036 | else | |
dc810e39 AM |
1037 | /* FIXME: the BFD library should never abort except for internal errors |
1038 | - it should return an error status. */ | |
917583ad | 1039 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 RH |
1040 | |
1041 | return br_insn; | |
1042 | } | |
7831a775 | 1043 | |
252b5132 RH |
1044 | \f |
1045 | static struct coff_link_hash_entry * | |
1046 | find_thumb_glue (info, name, input_bfd) | |
dc810e39 AM |
1047 | struct bfd_link_info *info; |
1048 | const char *name; | |
1049 | bfd *input_bfd; | |
252b5132 | 1050 | { |
dc810e39 AM |
1051 | char *tmp_name; |
1052 | struct coff_link_hash_entry *myh; | |
1053 | bfd_size_type amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; | |
252b5132 | 1054 | |
dc810e39 | 1055 | tmp_name = (char *) bfd_malloc (amt); |
252b5132 RH |
1056 | |
1057 | BFD_ASSERT (tmp_name); | |
1058 | ||
1059 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1060 | |
252b5132 | 1061 | myh = coff_link_hash_lookup |
b34976b6 | 1062 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1063 | |
252b5132 RH |
1064 | if (myh == NULL) |
1065 | /* xgettext:c-format */ | |
1066 | _bfd_error_handler (_("%s: unable to find THUMB glue '%s' for `%s'"), | |
8f615d07 | 1067 | bfd_archive_filename (input_bfd), tmp_name, name); |
d70910e8 | 1068 | |
252b5132 RH |
1069 | free (tmp_name); |
1070 | ||
1071 | return myh; | |
1072 | } | |
7831a775 | 1073 | #endif /* not ARM_WINCE */ |
252b5132 RH |
1074 | |
1075 | static struct coff_link_hash_entry * | |
1076 | find_arm_glue (info, name, input_bfd) | |
dc810e39 AM |
1077 | struct bfd_link_info *info; |
1078 | const char *name; | |
1079 | bfd *input_bfd; | |
252b5132 | 1080 | { |
dc810e39 | 1081 | char *tmp_name; |
252b5132 | 1082 | struct coff_link_hash_entry * myh; |
dc810e39 | 1083 | bfd_size_type amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
252b5132 | 1084 | |
dc810e39 | 1085 | tmp_name = (char *) bfd_malloc (amt); |
252b5132 RH |
1086 | |
1087 | BFD_ASSERT (tmp_name); | |
1088 | ||
1089 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1090 | |
252b5132 | 1091 | myh = coff_link_hash_lookup |
b34976b6 | 1092 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1093 | |
1094 | if (myh == NULL) | |
1095 | /* xgettext:c-format */ | |
1096 | _bfd_error_handler (_("%s: unable to find ARM glue '%s' for `%s'"), | |
8f615d07 | 1097 | bfd_archive_filename (input_bfd), tmp_name, name); |
d70910e8 | 1098 | |
252b5132 RH |
1099 | free (tmp_name); |
1100 | ||
1101 | return myh; | |
1102 | } | |
1103 | ||
1104 | /* | |
1105 | ARM->Thumb glue: | |
1106 | ||
1107 | .arm | |
1108 | __func_from_arm: | |
1109 | ldr r12, __func_addr | |
1110 | bx r12 | |
1111 | __func_addr: | |
1112 | .word func @ behave as if you saw a ARM_32 reloc | |
1113 | */ | |
1114 | ||
1115 | #define ARM2THUMB_GLUE_SIZE 12 | |
1116 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
1117 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
1118 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
1119 | ||
252b5132 RH |
1120 | /* |
1121 | Thumb->ARM: Thumb->(non-interworking aware) ARM | |
1122 | ||
1123 | .thumb .thumb | |
1124 | .align 2 .align 2 | |
1125 | __func_from_thumb: __func_from_thumb: | |
1126 | bx pc push {r6, lr} | |
1127 | nop ldr r6, __func_addr | |
1128 | .arm mov lr, pc | |
1129 | __func_change_to_arm: bx r6 | |
1130 | b func .arm | |
1131 | __func_back_to_thumb: | |
1132 | ldmia r13! {r6, lr} | |
1133 | bx lr | |
1134 | __func_addr: | |
d70910e8 | 1135 | .word func |
252b5132 RH |
1136 | */ |
1137 | ||
1138 | #define THUMB2ARM_GLUE_SIZE (globals->support_old_code ? 20 : 8) | |
1139 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
1140 | static const insn16 t2a2_noop_insn = 0x46c0; | |
1141 | static const insn32 t2a3_b_insn = 0xea000000; | |
1142 | ||
252b5132 RH |
1143 | static const insn16 t2a1_push_insn = 0xb540; |
1144 | static const insn16 t2a2_ldr_insn = 0x4e03; | |
1145 | static const insn16 t2a3_mov_insn = 0x46fe; | |
1146 | static const insn16 t2a4_bx_insn = 0x4730; | |
1147 | static const insn32 t2a5_pop_insn = 0xe8bd4040; | |
1148 | static const insn32 t2a6_bx_insn = 0xe12fff1e; | |
1149 | ||
1150 | /* TODO: | |
1151 | We should really create new local (static) symbols in destination | |
1152 | object for each stub we create. We should also create local | |
1153 | (static) symbols within the stubs when switching between ARM and | |
1154 | Thumb code. This will ensure that the debugger and disassembler | |
1155 | can present a better view of stubs. | |
1156 | ||
1157 | We can treat stubs like literal sections, and for the THUMB9 ones | |
1158 | (short addressing range) we should be able to insert the stubs | |
1159 | between sections. i.e. the simplest approach (since relocations | |
1160 | are done on a section basis) is to dump the stubs at the end of | |
1161 | processing a section. That way we can always try and minimise the | |
1162 | offset to and from a stub. However, this does not map well onto | |
1163 | the way that the linker/BFD does its work: mapping all input | |
1164 | sections to output sections via the linker script before doing | |
1165 | all the processing. | |
1166 | ||
1167 | Unfortunately it may be easier to just to disallow short range | |
1168 | Thumb->ARM stubs (i.e. no conditional inter-working branches, | |
1169 | only branch-and-link (BL) calls. This will simplify the processing | |
1170 | since we can then put all of the stubs into their own section. | |
1171 | ||
1172 | TODO: | |
1173 | On a different subject, rather than complaining when a | |
1174 | branch cannot fit in the number of bits available for the | |
1175 | instruction we should generate a trampoline stub (needed to | |
1176 | address the complete 32bit address space). */ | |
1177 | ||
d70910e8 | 1178 | /* The standard COFF backend linker does not cope with the special |
252b5132 RH |
1179 | Thumb BRANCH23 relocation. The alternative would be to split the |
1180 | BRANCH23 into seperate HI23 and LO23 relocations. However, it is a | |
d70910e8 | 1181 | bit simpler simply providing our own relocation driver. */ |
252b5132 RH |
1182 | |
1183 | /* The reloc processing routine for the ARM/Thumb COFF linker. NOTE: | |
1184 | This code is a very slightly modified copy of | |
1185 | _bfd_coff_generic_relocate_section. It would be a much more | |
1186 | maintainable solution to have a MACRO that could be expanded within | |
1187 | _bfd_coff_generic_relocate_section that would only be provided for | |
1188 | ARM/Thumb builds. It is only the code marked THUMBEXTENSION that | |
1189 | is different from the original. */ | |
1190 | ||
b34976b6 | 1191 | static bfd_boolean |
252b5132 RH |
1192 | coff_arm_relocate_section (output_bfd, info, input_bfd, input_section, |
1193 | contents, relocs, syms, sections) | |
1194 | bfd *output_bfd; | |
1195 | struct bfd_link_info *info; | |
1196 | bfd *input_bfd; | |
1197 | asection *input_section; | |
1198 | bfd_byte *contents; | |
1199 | struct internal_reloc *relocs; | |
1200 | struct internal_syment *syms; | |
1201 | asection **sections; | |
1202 | { | |
1203 | struct internal_reloc * rel; | |
1204 | struct internal_reloc * relend; | |
1205 | ||
1206 | rel = relocs; | |
1207 | relend = rel + input_section->reloc_count; | |
1208 | ||
1209 | for (; rel < relend; rel++) | |
1210 | { | |
1211 | int done = 0; | |
1212 | long symndx; | |
1213 | struct coff_link_hash_entry * h; | |
1214 | struct internal_syment * sym; | |
1215 | bfd_vma addend; | |
1216 | bfd_vma val; | |
1217 | reloc_howto_type * howto; | |
1218 | bfd_reloc_status_type rstat; | |
1219 | bfd_vma h_val; | |
1220 | ||
1221 | symndx = rel->r_symndx; | |
1222 | ||
1223 | if (symndx == -1) | |
1224 | { | |
1225 | h = NULL; | |
1226 | sym = NULL; | |
1227 | } | |
1228 | else | |
d70910e8 | 1229 | { |
252b5132 RH |
1230 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
1231 | sym = syms + symndx; | |
1232 | } | |
1233 | ||
1234 | /* COFF treats common symbols in one of two ways. Either the | |
1235 | size of the symbol is included in the section contents, or it | |
1236 | is not. We assume that the size is not included, and force | |
1237 | the rtype_to_howto function to adjust the addend as needed. */ | |
1238 | ||
1239 | if (sym != NULL && sym->n_scnum != 0) | |
1240 | addend = - sym->n_value; | |
1241 | else | |
1242 | addend = 0; | |
1243 | ||
252b5132 RH |
1244 | howto = coff_rtype_to_howto (input_bfd, input_section, rel, h, |
1245 | sym, &addend); | |
1246 | if (howto == NULL) | |
b34976b6 | 1247 | return FALSE; |
252b5132 RH |
1248 | |
1249 | /* The relocation_section function will skip pcrel_offset relocs | |
1049f94e | 1250 | when doing a relocatable link. However, we want to convert |
252b5132 RH |
1251 | ARM26 to ARM26D relocs if possible. We return a fake howto in |
1252 | this case without pcrel_offset set, and adjust the addend to | |
1253 | compensate. */ | |
1254 | if (rel->r_type == ARM_26 | |
1255 | && h != NULL | |
1049f94e | 1256 | && info->relocatable |
252b5132 RH |
1257 | && (h->root.type == bfd_link_hash_defined |
1258 | || h->root.type == bfd_link_hash_defweak) | |
dc810e39 AM |
1259 | && (h->root.u.def.section->output_section |
1260 | == input_section->output_section)) | |
252b5132 | 1261 | { |
d70910e8 | 1262 | static reloc_howto_type fake_arm26_reloc = |
252b5132 RH |
1263 | HOWTO (ARM_26, |
1264 | 2, | |
1265 | 2, | |
1266 | 24, | |
b34976b6 | 1267 | TRUE, |
252b5132 RH |
1268 | 0, |
1269 | complain_overflow_signed, | |
1270 | aoutarm_fix_pcrel_26 , | |
1271 | "ARM_26", | |
b34976b6 | 1272 | FALSE, |
252b5132 | 1273 | 0x00ffffff, |
d70910e8 | 1274 | 0x00ffffff, |
b34976b6 | 1275 | FALSE); |
252b5132 RH |
1276 | |
1277 | addend -= rel->r_vaddr - input_section->vma; | |
1278 | howto = &fake_arm26_reloc; | |
1279 | } | |
1280 | ||
17505c5c NC |
1281 | #ifdef ARM_WINCE |
1282 | /* MS ARM-CE makes the reloc relative to the opcode's pc, not | |
d70910e8 | 1283 | the next opcode's pc, so is off by one. */ |
63222ec9 NC |
1284 | #if 0 /* This appears to have been true for WINCE 2.0, but it is not |
1285 | true for WINCE 3.0. */ | |
1049f94e | 1286 | if (howto->pc_relative && !info->relocatable) |
17505c5c | 1287 | addend -= 8; |
63222ec9 | 1288 | #endif |
17505c5c | 1289 | #endif |
d70910e8 | 1290 | |
1049f94e | 1291 | /* If we are doing a relocatable link, then we can just ignore |
252b5132 | 1292 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 1293 | have the correct value. If this is not a relocatable link, |
252b5132 RH |
1294 | then we should ignore the symbol value. */ |
1295 | if (howto->pc_relative && howto->pcrel_offset) | |
1296 | { | |
1049f94e | 1297 | if (info->relocatable) |
252b5132 | 1298 | continue; |
87748b32 NC |
1299 | /* FIXME - it is not clear which targets need this next test |
1300 | and which do not. It is known that it is needed for the | |
d8adc60f NC |
1301 | VxWorks and EPOC-PE targets, but it is also known that it |
1302 | was supressed for other ARM targets. This ought to be | |
1303 | sorted out one day. */ | |
1304 | #ifdef ARM_COFF_BUGFIX | |
87748b32 NC |
1305 | /* We must not ignore the symbol value. If the symbol is |
1306 | within the same section, the relocation should have already | |
1307 | been fixed, but if it is not, we'll be handed a reloc into | |
1308 | the beginning of the symbol's section, so we must not cancel | |
1309 | out the symbol's value, otherwise we'll be adding it in | |
1310 | twice. */ | |
252b5132 RH |
1311 | if (sym != NULL && sym->n_scnum != 0) |
1312 | addend += sym->n_value; | |
ed1de528 | 1313 | #endif |
252b5132 RH |
1314 | } |
1315 | ||
1316 | val = 0; | |
1317 | ||
1318 | if (h == NULL) | |
1319 | { | |
1320 | asection *sec; | |
1321 | ||
1322 | if (symndx == -1) | |
1323 | { | |
1324 | sec = bfd_abs_section_ptr; | |
1325 | val = 0; | |
1326 | } | |
1327 | else | |
1328 | { | |
1329 | sec = sections[symndx]; | |
1330 | val = (sec->output_section->vma | |
1331 | + sec->output_offset | |
1332 | + sym->n_value | |
1333 | - sec->vma); | |
1334 | } | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | #if 1 /* THUMBEXTENSION */ | |
1339 | /* We don't output the stubs if we are generating a | |
1340 | relocatable output file, since we may as well leave the | |
1341 | stub generation to the final linker pass. If we fail to | |
1342 | verify that the name is defined, we'll try to build stubs | |
d70910e8 | 1343 | for an undefined name... */ |
1049f94e | 1344 | if (! info->relocatable |
252b5132 RH |
1345 | && ( h->root.type == bfd_link_hash_defined |
1346 | || h->root.type == bfd_link_hash_defweak)) | |
1347 | { | |
1348 | asection * h_sec = h->root.u.def.section; | |
1349 | const char * name = h->root.root.string; | |
d70910e8 | 1350 | |
252b5132 RH |
1351 | /* h locates the symbol referenced in the reloc. */ |
1352 | h_val = (h->root.u.def.value | |
1353 | + h_sec->output_section->vma | |
1354 | + h_sec->output_offset); | |
1355 | ||
1356 | if (howto->type == ARM_26) | |
1357 | { | |
1358 | if ( h->class == C_THUMBSTATFUNC | |
1359 | || h->class == C_THUMBEXTFUNC) | |
1360 | { | |
917583ad | 1361 | /* Arm code calling a Thumb function. */ |
252b5132 | 1362 | unsigned long int tmp; |
dc810e39 | 1363 | bfd_vma my_offset; |
252b5132 RH |
1364 | asection * s; |
1365 | long int ret_offset; | |
d70910e8 | 1366 | struct coff_link_hash_entry * myh; |
252b5132 | 1367 | struct coff_arm_link_hash_table * globals; |
d70910e8 | 1368 | |
252b5132 RH |
1369 | myh = find_arm_glue (info, name, input_bfd); |
1370 | if (myh == NULL) | |
b34976b6 | 1371 | return FALSE; |
252b5132 RH |
1372 | |
1373 | globals = coff_arm_hash_table (info); | |
1374 | ||
1375 | BFD_ASSERT (globals != NULL); | |
1376 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1377 | |
252b5132 | 1378 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1379 | |
1380 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 RH |
1381 | ARM2THUMB_GLUE_SECTION_NAME); |
1382 | BFD_ASSERT (s != NULL); | |
1383 | BFD_ASSERT (s->contents != NULL); | |
1384 | BFD_ASSERT (s->output_section != NULL); | |
1385 | ||
1386 | if ((my_offset & 0x01) == 0x01) | |
1387 | { | |
1388 | if (h_sec->owner != NULL | |
1389 | && INTERWORK_SET (h_sec->owner) | |
1390 | && ! INTERWORK_FLAG (h_sec->owner)) | |
1391 | { | |
1392 | _bfd_error_handler | |
1393 | /* xgettext:c-format */ | |
1394 | (_("%s(%s): warning: interworking not enabled."), | |
8f615d07 | 1395 | bfd_archive_filename (h_sec->owner), name); |
252b5132 RH |
1396 | _bfd_error_handler |
1397 | /* xgettext:c-format */ | |
1398 | (_(" first occurrence: %s: arm call to thumb"), | |
8f615d07 | 1399 | bfd_archive_filename (input_bfd)); |
252b5132 RH |
1400 | } |
1401 | ||
1402 | --my_offset; | |
1403 | myh->root.u.def.value = my_offset; | |
1404 | ||
dc810e39 | 1405 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, |
252b5132 | 1406 | s->contents + my_offset); |
d70910e8 | 1407 | |
dc810e39 | 1408 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
252b5132 | 1409 | s->contents + my_offset + 4); |
d70910e8 | 1410 | |
252b5132 RH |
1411 | /* It's a thumb address. Add the low order bit. */ |
1412 | bfd_put_32 (output_bfd, h_val | a2t3_func_addr_insn, | |
1413 | s->contents + my_offset + 8); | |
1414 | ||
1415 | if (info->base_file) | |
d70910e8 | 1416 | arm_emit_base_file_entry (info, output_bfd, s, |
dc810e39 | 1417 | my_offset + 8); |
252b5132 RH |
1418 | |
1419 | } | |
1420 | ||
1421 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
1422 | ||
1423 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr | |
1424 | - input_section->vma); | |
d70910e8 | 1425 | |
252b5132 RH |
1426 | tmp = tmp & 0xFF000000; |
1427 | ||
d70910e8 | 1428 | /* Somehow these are both 4 too far, so subtract 8. */ |
252b5132 RH |
1429 | ret_offset = |
1430 | s->output_offset | |
d70910e8 | 1431 | + my_offset |
252b5132 RH |
1432 | + s->output_section->vma |
1433 | - (input_section->output_offset | |
d70910e8 | 1434 | + input_section->output_section->vma |
252b5132 RH |
1435 | + rel->r_vaddr) |
1436 | - 8; | |
1437 | ||
1438 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); | |
d70910e8 | 1439 | |
dc810e39 AM |
1440 | bfd_put_32 (output_bfd, (bfd_vma) tmp, |
1441 | contents + rel->r_vaddr - input_section->vma); | |
252b5132 RH |
1442 | done = 1; |
1443 | } | |
1444 | } | |
d70910e8 | 1445 | |
17505c5c | 1446 | #ifndef ARM_WINCE |
917583ad | 1447 | /* Note: We used to check for ARM_THUMB9 and ARM_THUMB12. */ |
252b5132 RH |
1448 | else if (howto->type == ARM_THUMB23) |
1449 | { | |
d70910e8 | 1450 | if ( h->class == C_EXT |
252b5132 RH |
1451 | || h->class == C_STAT |
1452 | || h->class == C_LABEL) | |
1453 | { | |
1454 | /* Thumb code calling an ARM function */ | |
1455 | asection * s = 0; | |
dc810e39 | 1456 | bfd_vma my_offset; |
252b5132 RH |
1457 | unsigned long int tmp; |
1458 | long int ret_offset; | |
1459 | struct coff_link_hash_entry * myh; | |
1460 | struct coff_arm_link_hash_table * globals; | |
1461 | ||
1462 | myh = find_thumb_glue (info, name, input_bfd); | |
1463 | if (myh == NULL) | |
b34976b6 | 1464 | return FALSE; |
252b5132 RH |
1465 | |
1466 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1467 | |
252b5132 RH |
1468 | BFD_ASSERT (globals != NULL); |
1469 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1470 | |
252b5132 | 1471 | my_offset = myh->root.u.def.value; |
d70910e8 KH |
1472 | |
1473 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
252b5132 | 1474 | THUMB2ARM_GLUE_SECTION_NAME); |
d70910e8 | 1475 | |
252b5132 RH |
1476 | BFD_ASSERT (s != NULL); |
1477 | BFD_ASSERT (s->contents != NULL); | |
1478 | BFD_ASSERT (s->output_section != NULL); | |
d70910e8 | 1479 | |
252b5132 RH |
1480 | if ((my_offset & 0x01) == 0x01) |
1481 | { | |
1482 | if (h_sec->owner != NULL | |
1483 | && INTERWORK_SET (h_sec->owner) | |
1484 | && ! INTERWORK_FLAG (h_sec->owner) | |
1485 | && ! globals->support_old_code) | |
1486 | { | |
1487 | _bfd_error_handler | |
1488 | /* xgettext:c-format */ | |
1489 | (_("%s(%s): warning: interworking not enabled."), | |
8f615d07 | 1490 | bfd_archive_filename (h_sec->owner), name); |
252b5132 RH |
1491 | _bfd_error_handler |
1492 | /* xgettext:c-format */ | |
1493 | (_(" first occurrence: %s: thumb call to arm"), | |
8f615d07 | 1494 | bfd_archive_filename (input_bfd)); |
252b5132 RH |
1495 | _bfd_error_handler |
1496 | (_(" consider relinking with --support-old-code enabled")); | |
1497 | } | |
d70910e8 | 1498 | |
252b5132 RH |
1499 | -- my_offset; |
1500 | myh->root.u.def.value = my_offset; | |
1501 | ||
1502 | if (globals->support_old_code) | |
1503 | { | |
dc810e39 | 1504 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_push_insn, |
252b5132 | 1505 | s->contents + my_offset); |
d70910e8 | 1506 | |
dc810e39 | 1507 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_ldr_insn, |
252b5132 RH |
1508 | s->contents + my_offset + 2); |
1509 | ||
dc810e39 | 1510 | bfd_put_16 (output_bfd, (bfd_vma) t2a3_mov_insn, |
252b5132 RH |
1511 | s->contents + my_offset + 4); |
1512 | ||
dc810e39 | 1513 | bfd_put_16 (output_bfd, (bfd_vma) t2a4_bx_insn, |
252b5132 | 1514 | s->contents + my_offset + 6); |
d70910e8 | 1515 | |
dc810e39 | 1516 | bfd_put_32 (output_bfd, (bfd_vma) t2a5_pop_insn, |
252b5132 | 1517 | s->contents + my_offset + 8); |
d70910e8 | 1518 | |
dc810e39 | 1519 | bfd_put_32 (output_bfd, (bfd_vma) t2a6_bx_insn, |
252b5132 | 1520 | s->contents + my_offset + 12); |
d70910e8 | 1521 | |
252b5132 RH |
1522 | /* Store the address of the function in the last word of the stub. */ |
1523 | bfd_put_32 (output_bfd, h_val, | |
1524 | s->contents + my_offset + 16); | |
fa0e42e4 CM |
1525 | |
1526 | if (info->base_file) | |
dc810e39 AM |
1527 | arm_emit_base_file_entry (info, output_bfd, s, |
1528 | my_offset + 16); | |
252b5132 RH |
1529 | } |
1530 | else | |
1531 | { | |
dc810e39 | 1532 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 | 1533 | s->contents + my_offset); |
d70910e8 | 1534 | |
dc810e39 | 1535 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 | 1536 | s->contents + my_offset + 2); |
d70910e8 | 1537 | |
252b5132 | 1538 | ret_offset = |
917583ad | 1539 | ((bfd_signed_vma) h_val) /* Address of destination of the stub. */ |
252b5132 RH |
1540 | - ((bfd_signed_vma) |
1541 | (s->output_offset /* Offset from the start of the current section to the start of the stubs. */ | |
1542 | + my_offset /* Offset of the start of this stub from the start of the stubs. */ | |
1543 | + s->output_section->vma) /* Address of the start of the current section. */ | |
1544 | + 4 /* The branch instruction is 4 bytes into the stub. */ | |
1545 | + 8); /* ARM branches work from the pc of the instruction + 8. */ | |
d70910e8 | 1546 | |
252b5132 | 1547 | bfd_put_32 (output_bfd, |
dc810e39 | 1548 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
1549 | s->contents + my_offset + 4); |
1550 | ||
252b5132 RH |
1551 | } |
1552 | } | |
1553 | ||
1554 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
1555 | ||
1556 | /* Now go back and fix up the original BL insn to point | |
1557 | to here. */ | |
1558 | ret_offset = | |
1559 | s->output_offset | |
1560 | + my_offset | |
1561 | - (input_section->output_offset | |
1562 | + rel->r_vaddr) | |
1563 | -4; | |
d70910e8 | 1564 | |
252b5132 RH |
1565 | tmp = bfd_get_32 (input_bfd, contents + rel->r_vaddr |
1566 | - input_section->vma); | |
1567 | ||
1568 | bfd_put_32 (output_bfd, | |
dc810e39 AM |
1569 | (bfd_vma) insert_thumb_branch (tmp, |
1570 | ret_offset), | |
1571 | contents + rel->r_vaddr - input_section->vma); | |
d70910e8 | 1572 | |
252b5132 RH |
1573 | done = 1; |
1574 | } | |
1575 | } | |
17505c5c | 1576 | #endif |
252b5132 | 1577 | } |
d70910e8 | 1578 | |
252b5132 RH |
1579 | /* If the relocation type and destination symbol does not |
1580 | fall into one of the above categories, then we can just | |
d70910e8 | 1581 | perform a direct link. */ |
252b5132 RH |
1582 | |
1583 | if (done) | |
1584 | rstat = bfd_reloc_ok; | |
d70910e8 | 1585 | else |
252b5132 RH |
1586 | #endif /* THUMBEXTENSION */ |
1587 | if ( h->root.type == bfd_link_hash_defined | |
1588 | || h->root.type == bfd_link_hash_defweak) | |
1589 | { | |
1590 | asection *sec; | |
1591 | ||
1592 | sec = h->root.u.def.section; | |
1593 | val = (h->root.u.def.value | |
1594 | + sec->output_section->vma | |
1595 | + sec->output_offset); | |
1596 | } | |
1597 | ||
1049f94e | 1598 | else if (! info->relocatable) |
252b5132 RH |
1599 | { |
1600 | if (! ((*info->callbacks->undefined_symbol) | |
1601 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
1602 | rel->r_vaddr - input_section->vma, TRUE))) |
1603 | return FALSE; | |
252b5132 RH |
1604 | } |
1605 | } | |
1606 | ||
1607 | if (info->base_file) | |
1608 | { | |
d70910e8 | 1609 | /* Emit a reloc if the backend thinks it needs it. */ |
252b5132 | 1610 | if (sym && pe_data(output_bfd)->in_reloc_p(output_bfd, howto)) |
dc810e39 AM |
1611 | arm_emit_base_file_entry (info, output_bfd, input_section, |
1612 | rel->r_vaddr); | |
252b5132 | 1613 | } |
d70910e8 | 1614 | |
252b5132 RH |
1615 | #if 1 /* THUMBEXTENSION */ |
1616 | if (done) | |
1617 | rstat = bfd_reloc_ok; | |
17505c5c | 1618 | #ifndef ARM_WINCE |
252b5132 | 1619 | /* Only perform this fix during the final link, not a relocatable link. nickc@cygnus.com */ |
1049f94e | 1620 | else if (! info->relocatable |
252b5132 RH |
1621 | && howto->type == ARM_THUMB23) |
1622 | { | |
1623 | /* This is pretty much a copy of what the default | |
1624 | _bfd_final_link_relocate and _bfd_relocate_contents | |
1625 | routines do to perform a relocation, with special | |
1626 | processing for the split addressing of the Thumb BL | |
1627 | instruction. Again, it would probably be simpler adding a | |
1628 | ThumbBRANCH23 specific macro expansion into the default | |
1629 | code. */ | |
d70910e8 | 1630 | |
252b5132 | 1631 | bfd_vma address = rel->r_vaddr - input_section->vma; |
d70910e8 | 1632 | |
252b5132 RH |
1633 | if (address > input_section->_raw_size) |
1634 | rstat = bfd_reloc_outofrange; | |
1635 | else | |
1636 | { | |
b34976b6 AM |
1637 | bfd_vma relocation = val + addend; |
1638 | int size = bfd_get_reloc_size (howto); | |
1639 | bfd_boolean overflow = FALSE; | |
1640 | bfd_byte *location = contents + address; | |
1641 | bfd_vma x = bfd_get_32 (input_bfd, location); | |
1642 | bfd_vma src_mask = 0x007FFFFE; | |
1643 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; | |
1644 | bfd_signed_vma reloc_signed_min = ~reloc_signed_max; | |
1645 | bfd_vma check; | |
1646 | bfd_signed_vma signed_check; | |
1647 | bfd_vma add; | |
1648 | bfd_signed_vma signed_add; | |
252b5132 RH |
1649 | |
1650 | BFD_ASSERT (size == 4); | |
d70910e8 | 1651 | |
4f3c3dbb | 1652 | /* howto->pc_relative should be TRUE for type 14 BRANCH23. */ |
252b5132 RH |
1653 | relocation -= (input_section->output_section->vma |
1654 | + input_section->output_offset); | |
d70910e8 | 1655 | |
4f3c3dbb | 1656 | /* howto->pcrel_offset should be TRUE for type 14 BRANCH23. */ |
252b5132 | 1657 | relocation -= address; |
d70910e8 KH |
1658 | |
1659 | /* No need to negate the relocation with BRANCH23. */ | |
252b5132 RH |
1660 | /* howto->complain_on_overflow == complain_overflow_signed for BRANCH23. */ |
1661 | /* howto->rightshift == 1 */ | |
d70910e8 | 1662 | |
4f3c3dbb | 1663 | /* Drop unwanted bits from the value we are relocating to. */ |
252b5132 | 1664 | check = relocation >> howto->rightshift; |
d70910e8 | 1665 | |
252b5132 RH |
1666 | /* If this is a signed value, the rightshift just dropped |
1667 | leading 1 bits (assuming twos complement). */ | |
1668 | if ((bfd_signed_vma) relocation >= 0) | |
1669 | signed_check = check; | |
1670 | else | |
1671 | signed_check = (check | |
1672 | | ((bfd_vma) - 1 | |
1673 | & ~((bfd_vma) - 1 >> howto->rightshift))); | |
d70910e8 | 1674 | |
252b5132 RH |
1675 | /* Get the value from the object file. */ |
1676 | if (bfd_big_endian (input_bfd)) | |
4f3c3dbb | 1677 | add = (((x) & 0x07ff0000) >> 4) | (((x) & 0x7ff) << 1); |
252b5132 | 1678 | else |
4f3c3dbb | 1679 | add = ((((x) & 0x7ff) << 12) | (((x) & 0x07ff0000) >> 15)); |
252b5132 RH |
1680 | |
1681 | /* Get the value from the object file with an appropriate sign. | |
1682 | The expression involving howto->src_mask isolates the upper | |
1683 | bit of src_mask. If that bit is set in the value we are | |
1684 | adding, it is negative, and we subtract out that number times | |
1685 | two. If src_mask includes the highest possible bit, then we | |
1686 | can not get the upper bit, but that does not matter since | |
1687 | signed_add needs no adjustment to become negative in that | |
1688 | case. */ | |
252b5132 | 1689 | signed_add = add; |
d70910e8 | 1690 | |
252b5132 RH |
1691 | if ((add & (((~ src_mask) >> 1) & src_mask)) != 0) |
1692 | signed_add -= (((~ src_mask) >> 1) & src_mask) << 1; | |
d70910e8 | 1693 | |
4f3c3dbb | 1694 | /* howto->bitpos == 0 */ |
252b5132 RH |
1695 | /* Add the value from the object file, shifted so that it is a |
1696 | straight number. */ | |
252b5132 | 1697 | signed_check += signed_add; |
4f3c3dbb | 1698 | relocation += signed_add; |
252b5132 RH |
1699 | |
1700 | BFD_ASSERT (howto->complain_on_overflow == complain_overflow_signed); | |
1701 | ||
1702 | /* Assumes two's complement. */ | |
1703 | if ( signed_check > reloc_signed_max | |
1704 | || signed_check < reloc_signed_min) | |
b34976b6 | 1705 | overflow = TRUE; |
d70910e8 | 1706 | |
c62e1cc3 NC |
1707 | /* Put the relocation into the correct bits. |
1708 | For a BLX instruction, make sure that the relocation is rounded up | |
1709 | to a word boundary. This follows the semantics of the instruction | |
1710 | which specifies that bit 1 of the target address will come from bit | |
1711 | 1 of the base address. */ | |
252b5132 | 1712 | if (bfd_big_endian (input_bfd)) |
c62e1cc3 NC |
1713 | { |
1714 | if ((x & 0x1800) == 0x0800 && (relocation & 0x02)) | |
1715 | relocation += 2; | |
1716 | relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000)); | |
1717 | } | |
252b5132 | 1718 | else |
c62e1cc3 NC |
1719 | { |
1720 | if ((x & 0x18000000) == 0x08000000 && (relocation & 0x02)) | |
1721 | relocation += 2; | |
1722 | relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff)); | |
1723 | } | |
d70910e8 | 1724 | |
4f3c3dbb | 1725 | /* Add the relocation to the correct bits of X. */ |
252b5132 RH |
1726 | x = ((x & ~howto->dst_mask) | relocation); |
1727 | ||
4f3c3dbb | 1728 | /* Put the relocated value back in the object file. */ |
252b5132 RH |
1729 | bfd_put_32 (input_bfd, x, location); |
1730 | ||
1731 | rstat = overflow ? bfd_reloc_overflow : bfd_reloc_ok; | |
1732 | } | |
1733 | } | |
17505c5c | 1734 | #endif |
252b5132 RH |
1735 | else |
1736 | #endif /* THUMBEXTENSION */ | |
1737 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1738 | contents, | |
1739 | rel->r_vaddr - input_section->vma, | |
1740 | val, addend); | |
1741 | #if 1 /* THUMBEXTENSION */ | |
d70910e8 | 1742 | /* FIXME: |
252b5132 RH |
1743 | Is this the best way to fix up thumb addresses? krk@cygnus.com |
1744 | Probably not, but it works, and if it works it don't need fixing! nickc@cygnus.com */ | |
1745 | /* Only perform this fix during the final link, not a relocatable link. nickc@cygnus.com */ | |
1049f94e | 1746 | if (! info->relocatable |
b44267fd | 1747 | && (rel->r_type == ARM_32 || rel->r_type == ARM_RVA32)) |
252b5132 RH |
1748 | { |
1749 | /* Determine if we need to set the bottom bit of a relocated address | |
1750 | because the address is the address of a Thumb code symbol. */ | |
d70910e8 | 1751 | |
b34976b6 | 1752 | int patchit = FALSE; |
d70910e8 | 1753 | |
252b5132 RH |
1754 | if (h != NULL |
1755 | && ( h->class == C_THUMBSTATFUNC | |
1756 | || h->class == C_THUMBEXTFUNC)) | |
1757 | { | |
b34976b6 | 1758 | patchit = TRUE; |
252b5132 RH |
1759 | } |
1760 | else if (sym != NULL | |
1761 | && sym->n_scnum > N_UNDEF) | |
1762 | { | |
1763 | /* No hash entry - use the symbol instead. */ | |
1764 | ||
1765 | if ( sym->n_sclass == C_THUMBSTATFUNC | |
1766 | || sym->n_sclass == C_THUMBEXTFUNC) | |
b34976b6 | 1767 | patchit = TRUE; |
252b5132 RH |
1768 | } |
1769 | ||
1770 | if (patchit) | |
1771 | { | |
1772 | bfd_byte * location = contents + rel->r_vaddr - input_section->vma; | |
1773 | bfd_vma x = bfd_get_32 (input_bfd, location); | |
1774 | ||
1775 | bfd_put_32 (input_bfd, x | 1, location); | |
1776 | } | |
1777 | } | |
d70910e8 KH |
1778 | #endif /* THUMBEXTENSION */ |
1779 | ||
252b5132 RH |
1780 | switch (rstat) |
1781 | { | |
1782 | default: | |
1783 | abort (); | |
1784 | case bfd_reloc_ok: | |
1785 | break; | |
1786 | case bfd_reloc_outofrange: | |
1787 | (*_bfd_error_handler) | |
1788 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
8f615d07 | 1789 | bfd_archive_filename (input_bfd), |
252b5132 RH |
1790 | (unsigned long) rel->r_vaddr, |
1791 | bfd_get_section_name (input_bfd, input_section)); | |
b34976b6 | 1792 | return FALSE; |
252b5132 RH |
1793 | case bfd_reloc_overflow: |
1794 | { | |
1795 | const char *name; | |
1796 | char buf[SYMNMLEN + 1]; | |
1797 | ||
1798 | if (symndx == -1) | |
1799 | name = "*ABS*"; | |
1800 | else if (h != NULL) | |
1801 | name = h->root.root.string; | |
1802 | else | |
1803 | { | |
1804 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
1805 | if (name == NULL) | |
b34976b6 | 1806 | return FALSE; |
252b5132 RH |
1807 | } |
1808 | ||
1809 | if (! ((*info->callbacks->reloc_overflow) | |
1810 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
1811 | input_section, rel->r_vaddr - input_section->vma))) | |
b34976b6 | 1812 | return FALSE; |
252b5132 RH |
1813 | } |
1814 | } | |
1815 | } | |
1816 | ||
b34976b6 | 1817 | return TRUE; |
252b5132 RH |
1818 | } |
1819 | ||
e049a0de ILT |
1820 | #ifndef COFF_IMAGE_WITH_PE |
1821 | ||
b34976b6 | 1822 | bfd_boolean |
d70910e8 | 1823 | bfd_arm_allocate_interworking_sections (info) |
252b5132 RH |
1824 | struct bfd_link_info * info; |
1825 | { | |
1826 | asection * s; | |
1827 | bfd_byte * foo; | |
1828 | struct coff_arm_link_hash_table * globals; | |
1829 | #if 0 | |
1830 | static char test_char = '1'; | |
1831 | #endif | |
1832 | ||
1833 | globals = coff_arm_hash_table (info); | |
d70910e8 | 1834 | |
252b5132 RH |
1835 | BFD_ASSERT (globals != NULL); |
1836 | ||
1837 | if (globals->arm_glue_size != 0) | |
1838 | { | |
1839 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1840 | |
252b5132 RH |
1841 | s = bfd_get_section_by_name |
1842 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1843 | ||
1844 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1845 | |
dc810e39 AM |
1846 | foo = (bfd_byte *) bfd_alloc (globals->bfd_of_glue_owner, |
1847 | globals->arm_glue_size); | |
252b5132 | 1848 | #if 0 |
dc810e39 | 1849 | memset (foo, test_char, (size_t) globals->arm_glue_size); |
252b5132 | 1850 | #endif |
d70910e8 | 1851 | |
252b5132 RH |
1852 | s->_raw_size = s->_cooked_size = globals->arm_glue_size; |
1853 | s->contents = foo; | |
1854 | } | |
1855 | ||
1856 | if (globals->thumb_glue_size != 0) | |
1857 | { | |
1858 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
d70910e8 | 1859 | |
252b5132 RH |
1860 | s = bfd_get_section_by_name |
1861 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1862 | ||
1863 | BFD_ASSERT (s != NULL); | |
d70910e8 | 1864 | |
dc810e39 AM |
1865 | foo = (bfd_byte *) bfd_alloc (globals->bfd_of_glue_owner, |
1866 | globals->thumb_glue_size); | |
252b5132 | 1867 | #if 0 |
dc810e39 | 1868 | memset (foo, test_char, (size_t) globals->thumb_glue_size); |
252b5132 | 1869 | #endif |
d70910e8 | 1870 | |
252b5132 RH |
1871 | s->_raw_size = s->_cooked_size = globals->thumb_glue_size; |
1872 | s->contents = foo; | |
1873 | } | |
1874 | ||
b34976b6 | 1875 | return TRUE; |
252b5132 RH |
1876 | } |
1877 | ||
1878 | static void | |
1879 | record_arm_to_thumb_glue (info, h) | |
1880 | struct bfd_link_info * info; | |
1881 | struct coff_link_hash_entry * h; | |
1882 | { | |
1883 | const char * name = h->root.root.string; | |
1884 | register asection * s; | |
1885 | char * tmp_name; | |
1886 | struct coff_link_hash_entry * myh; | |
14a793b2 | 1887 | struct bfd_link_hash_entry * bh; |
252b5132 | 1888 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1889 | bfd_vma val; |
1890 | bfd_size_type amt; | |
252b5132 RH |
1891 | |
1892 | globals = coff_arm_hash_table (info); | |
1893 | ||
1894 | BFD_ASSERT (globals != NULL); | |
1895 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1896 | ||
1897 | s = bfd_get_section_by_name | |
1898 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1899 | ||
1900 | BFD_ASSERT (s != NULL); | |
1901 | ||
dc810e39 AM |
1902 | amt = strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1; |
1903 | tmp_name = (char *) bfd_malloc (amt); | |
252b5132 RH |
1904 | |
1905 | BFD_ASSERT (tmp_name); | |
1906 | ||
1907 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
d70910e8 | 1908 | |
252b5132 | 1909 | myh = coff_link_hash_lookup |
b34976b6 | 1910 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1911 | |
252b5132 RH |
1912 | if (myh != NULL) |
1913 | { | |
1914 | free (tmp_name); | |
1915 | return; /* we've already seen this guy */ | |
1916 | } | |
1917 | ||
1918 | /* The only trick here is using globals->arm_glue_size as the value. Even | |
1919 | though the section isn't allocated yet, this is where we will be putting | |
1920 | it. */ | |
1921 | ||
14a793b2 | 1922 | bh = NULL; |
dc810e39 | 1923 | val = globals->arm_glue_size + 1; |
252b5132 | 1924 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1925 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1926 | |
252b5132 | 1927 | free (tmp_name); |
d70910e8 | 1928 | |
252b5132 RH |
1929 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; |
1930 | ||
1931 | return; | |
1932 | } | |
1933 | ||
7831a775 | 1934 | #ifndef ARM_WINCE |
252b5132 RH |
1935 | static void |
1936 | record_thumb_to_arm_glue (info, h) | |
1937 | struct bfd_link_info * info; | |
1938 | struct coff_link_hash_entry * h; | |
1939 | { | |
1940 | const char * name = h->root.root.string; | |
1941 | register asection * s; | |
1942 | char * tmp_name; | |
1943 | struct coff_link_hash_entry * myh; | |
14a793b2 | 1944 | struct bfd_link_hash_entry * bh; |
252b5132 | 1945 | struct coff_arm_link_hash_table * globals; |
dc810e39 AM |
1946 | bfd_vma val; |
1947 | bfd_size_type amt; | |
252b5132 | 1948 | |
252b5132 | 1949 | globals = coff_arm_hash_table (info); |
d70910e8 | 1950 | |
252b5132 RH |
1951 | BFD_ASSERT (globals != NULL); |
1952 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1953 | ||
1954 | s = bfd_get_section_by_name | |
1955 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1956 | ||
1957 | BFD_ASSERT (s != NULL); | |
1958 | ||
dc810e39 AM |
1959 | amt = strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1; |
1960 | tmp_name = (char *) bfd_malloc (amt); | |
252b5132 RH |
1961 | |
1962 | BFD_ASSERT (tmp_name); | |
1963 | ||
1964 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1965 | ||
1966 | myh = coff_link_hash_lookup | |
b34976b6 | 1967 | (coff_hash_table (info), tmp_name, FALSE, FALSE, TRUE); |
d70910e8 | 1968 | |
252b5132 RH |
1969 | if (myh != NULL) |
1970 | { | |
1971 | free (tmp_name); | |
1972 | return; /* we've already seen this guy */ | |
1973 | } | |
1974 | ||
14a793b2 | 1975 | bh = NULL; |
dc810e39 | 1976 | val = globals->thumb_glue_size + 1; |
252b5132 | 1977 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 1978 | BSF_GLOBAL, s, val, NULL, TRUE, FALSE, &bh); |
d70910e8 | 1979 | |
252b5132 | 1980 | /* If we mark it 'thumb', the disassembler will do a better job. */ |
14a793b2 | 1981 | myh = (struct coff_link_hash_entry *) bh; |
252b5132 RH |
1982 | myh->class = C_THUMBEXTFUNC; |
1983 | ||
1984 | free (tmp_name); | |
1985 | ||
1986 | /* Allocate another symbol to mark where we switch to arm mode. */ | |
d70910e8 | 1987 | |
252b5132 RH |
1988 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
1989 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
d70910e8 | 1990 | |
dc810e39 AM |
1991 | amt = strlen (name) + strlen (CHANGE_TO_ARM) + 1; |
1992 | tmp_name = (char *) bfd_malloc (amt); | |
d70910e8 | 1993 | |
252b5132 | 1994 | BFD_ASSERT (tmp_name); |
d70910e8 | 1995 | |
252b5132 RH |
1996 | sprintf (tmp_name, globals->support_old_code ? BACK_FROM_ARM : CHANGE_TO_ARM, name); |
1997 | ||
14a793b2 | 1998 | bh = NULL; |
dc810e39 | 1999 | val = globals->thumb_glue_size + (globals->support_old_code ? 8 : 4); |
252b5132 | 2000 | bfd_coff_link_add_one_symbol (info, globals->bfd_of_glue_owner, tmp_name, |
b34976b6 | 2001 | BSF_LOCAL, s, val, NULL, TRUE, FALSE, &bh); |
252b5132 | 2002 | |
d70910e8 KH |
2003 | free (tmp_name); |
2004 | ||
252b5132 RH |
2005 | globals->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
2006 | ||
2007 | return; | |
2008 | } | |
7831a775 | 2009 | #endif /* not ARM_WINCE */ |
252b5132 RH |
2010 | |
2011 | /* Select a BFD to be used to hold the sections used by the glue code. | |
2012 | This function is called from the linker scripts in ld/emultempl/ | |
2013 | {armcoff/pe}.em */ | |
e049a0de | 2014 | |
b34976b6 | 2015 | bfd_boolean |
252b5132 RH |
2016 | bfd_arm_get_bfd_for_interworking (abfd, info) |
2017 | bfd * abfd; | |
2018 | struct bfd_link_info * info; | |
2019 | { | |
2020 | struct coff_arm_link_hash_table * globals; | |
2021 | flagword flags; | |
2022 | asection * sec; | |
d70910e8 | 2023 | |
252b5132 RH |
2024 | /* If we are only performing a partial link do not bother |
2025 | getting a bfd to hold the glue. */ | |
1049f94e | 2026 | if (info->relocatable) |
b34976b6 | 2027 | return TRUE; |
d70910e8 | 2028 | |
252b5132 | 2029 | globals = coff_arm_hash_table (info); |
d70910e8 | 2030 | |
252b5132 RH |
2031 | BFD_ASSERT (globals != NULL); |
2032 | ||
2033 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 2034 | return TRUE; |
d70910e8 | 2035 | |
252b5132 | 2036 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
d70910e8 KH |
2037 | |
2038 | if (sec == NULL) | |
252b5132 | 2039 | { |
ba3d4249 | 2040 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
d70910e8 | 2041 | |
252b5132 | 2042 | sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
d70910e8 | 2043 | |
252b5132 RH |
2044 | if (sec == NULL |
2045 | || ! bfd_set_section_flags (abfd, sec, flags) | |
2046 | || ! bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 2047 | return FALSE; |
252b5132 RH |
2048 | } |
2049 | ||
2050 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
2051 | ||
d70910e8 | 2052 | if (sec == NULL) |
252b5132 | 2053 | { |
ba3d4249 | 2054 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
d70910e8 | 2055 | |
252b5132 | 2056 | sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME); |
d70910e8 | 2057 | |
252b5132 RH |
2058 | if (sec == NULL |
2059 | || ! bfd_set_section_flags (abfd, sec, flags) | |
2060 | || ! bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 2061 | return FALSE; |
252b5132 | 2062 | } |
d70910e8 | 2063 | |
252b5132 RH |
2064 | /* Save the bfd for later use. */ |
2065 | globals->bfd_of_glue_owner = abfd; | |
d70910e8 | 2066 | |
b34976b6 | 2067 | return TRUE; |
252b5132 RH |
2068 | } |
2069 | ||
b34976b6 | 2070 | bfd_boolean |
252b5132 RH |
2071 | bfd_arm_process_before_allocation (abfd, info, support_old_code) |
2072 | bfd * abfd; | |
2073 | struct bfd_link_info * info; | |
2074 | int support_old_code; | |
2075 | { | |
2076 | asection * sec; | |
2077 | struct coff_arm_link_hash_table * globals; | |
2078 | ||
2079 | /* If we are only performing a partial link do not bother | |
2080 | to construct any glue. */ | |
1049f94e | 2081 | if (info->relocatable) |
b34976b6 | 2082 | return TRUE; |
d70910e8 | 2083 | |
252b5132 RH |
2084 | /* Here we have a bfd that is to be included on the link. We have a hook |
2085 | to do reloc rummaging, before section sizes are nailed down. */ | |
2086 | ||
2087 | _bfd_coff_get_external_symbols (abfd); | |
2088 | ||
2089 | globals = coff_arm_hash_table (info); | |
d70910e8 | 2090 | |
252b5132 RH |
2091 | BFD_ASSERT (globals != NULL); |
2092 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2093 | ||
2094 | globals->support_old_code = support_old_code; | |
d70910e8 | 2095 | |
252b5132 RH |
2096 | /* Rummage around all the relocs and map the glue vectors. */ |
2097 | sec = abfd->sections; | |
2098 | ||
2099 | if (sec == NULL) | |
b34976b6 | 2100 | return TRUE; |
252b5132 RH |
2101 | |
2102 | for (; sec != NULL; sec = sec->next) | |
2103 | { | |
2104 | struct internal_reloc * i; | |
2105 | struct internal_reloc * rel; | |
2106 | ||
d70910e8 | 2107 | if (sec->reloc_count == 0) |
252b5132 RH |
2108 | continue; |
2109 | ||
2110 | /* Load the relocs. */ | |
d70910e8 KH |
2111 | /* FIXME: there may be a storage leak here. */ |
2112 | ||
252b5132 | 2113 | i = _bfd_coff_read_internal_relocs (abfd, sec, 1, 0, 0, 0); |
d70910e8 | 2114 | |
252b5132 RH |
2115 | BFD_ASSERT (i != 0); |
2116 | ||
d70910e8 | 2117 | for (rel = i; rel < i + sec->reloc_count; ++rel) |
252b5132 RH |
2118 | { |
2119 | unsigned short r_type = rel->r_type; | |
86033394 | 2120 | long symndx; |
252b5132 RH |
2121 | struct coff_link_hash_entry * h; |
2122 | ||
2123 | symndx = rel->r_symndx; | |
2124 | ||
d70910e8 | 2125 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2126 | if (symndx == -1) |
2127 | continue; | |
2128 | ||
17505c5c | 2129 | /* If the index is outside of the range of our table, something has gone wrong. */ |
af74ae99 NC |
2130 | if (symndx >= obj_conv_table_size (abfd)) |
2131 | { | |
2132 | _bfd_error_handler (_("%s: illegal symbol index in reloc: %d"), | |
8f615d07 | 2133 | bfd_archive_filename (abfd), symndx); |
af74ae99 NC |
2134 | continue; |
2135 | } | |
d70910e8 | 2136 | |
252b5132 RH |
2137 | h = obj_coff_sym_hashes (abfd)[symndx]; |
2138 | ||
2139 | /* If the relocation is against a static symbol it must be within | |
2140 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2141 | if (h == NULL) | |
2142 | continue; | |
2143 | ||
2144 | switch (r_type) | |
2145 | { | |
2146 | case ARM_26: | |
2147 | /* This one is a call from arm code. We need to look up | |
2148 | the target of the call. If it is a thumb target, we | |
2149 | insert glue. */ | |
d70910e8 | 2150 | |
252b5132 RH |
2151 | if (h->class == C_THUMBEXTFUNC) |
2152 | record_arm_to_thumb_glue (info, h); | |
2153 | break; | |
d70910e8 | 2154 | |
17505c5c | 2155 | #ifndef ARM_WINCE |
252b5132 RH |
2156 | case ARM_THUMB23: |
2157 | /* This one is a call from thumb code. We used to look | |
2158 | for ARM_THUMB9 and ARM_THUMB12 as well. We need to look | |
2159 | up the target of the call. If it is an arm target, we | |
2160 | insert glue. If the symbol does not exist it will be | |
2161 | given a class of C_EXT and so we will generate a stub | |
2162 | for it. This is not really a problem, since the link | |
2163 | is doomed anyway. */ | |
2164 | ||
2165 | switch (h->class) | |
2166 | { | |
2167 | case C_EXT: | |
2168 | case C_STAT: | |
2169 | case C_LABEL: | |
2170 | record_thumb_to_arm_glue (info, h); | |
2171 | break; | |
2172 | default: | |
2173 | ; | |
2174 | } | |
2175 | break; | |
17505c5c | 2176 | #endif |
d70910e8 | 2177 | |
252b5132 RH |
2178 | default: |
2179 | break; | |
2180 | } | |
2181 | } | |
2182 | } | |
2183 | ||
b34976b6 | 2184 | return TRUE; |
252b5132 RH |
2185 | } |
2186 | ||
e049a0de ILT |
2187 | #endif /* ! defined (COFF_IMAGE_WITH_PE) */ |
2188 | ||
252b5132 RH |
2189 | #define coff_bfd_reloc_type_lookup coff_arm_reloc_type_lookup |
2190 | #define coff_relocate_section coff_arm_relocate_section | |
2191 | #define coff_bfd_is_local_label_name coff_arm_is_local_label_name | |
2192 | #define coff_adjust_symndx coff_arm_adjust_symndx | |
2193 | #define coff_link_output_has_begun coff_arm_link_output_has_begun | |
2194 | #define coff_final_link_postscript coff_arm_final_link_postscript | |
2195 | #define coff_bfd_merge_private_bfd_data coff_arm_merge_private_bfd_data | |
2196 | #define coff_bfd_print_private_bfd_data coff_arm_print_private_bfd_data | |
2197 | #define coff_bfd_set_private_flags _bfd_coff_arm_set_private_flags | |
2198 | #define coff_bfd_copy_private_bfd_data coff_arm_copy_private_bfd_data | |
2199 | #define coff_bfd_link_hash_table_create coff_arm_link_hash_table_create | |
2200 | ||
1049f94e | 2201 | /* When doing a relocatable link, we want to convert ARM26 relocs |
252b5132 RH |
2202 | into ARM26D relocs. */ |
2203 | ||
b34976b6 | 2204 | static bfd_boolean |
252b5132 | 2205 | coff_arm_adjust_symndx (obfd, info, ibfd, sec, irel, adjustedp) |
5f771d47 ILT |
2206 | bfd *obfd ATTRIBUTE_UNUSED; |
2207 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
252b5132 RH |
2208 | bfd *ibfd; |
2209 | asection *sec; | |
2210 | struct internal_reloc *irel; | |
b34976b6 | 2211 | bfd_boolean *adjustedp; |
252b5132 RH |
2212 | { |
2213 | if (irel->r_type == 3) | |
2214 | { | |
2215 | struct coff_link_hash_entry *h; | |
2216 | ||
2217 | h = obj_coff_sym_hashes (ibfd)[irel->r_symndx]; | |
2218 | if (h != NULL | |
2219 | && (h->root.type == bfd_link_hash_defined | |
2220 | || h->root.type == bfd_link_hash_defweak) | |
2221 | && h->root.u.def.section->output_section == sec->output_section) | |
2222 | irel->r_type = 7; | |
2223 | } | |
b34976b6 AM |
2224 | *adjustedp = FALSE; |
2225 | return TRUE; | |
252b5132 RH |
2226 | } |
2227 | ||
2228 | /* Called when merging the private data areas of two BFDs. | |
2229 | This is important as it allows us to detect if we are | |
2230 | attempting to merge binaries compiled for different ARM | |
2231 | targets, eg different CPUs or differents APCS's. */ | |
2232 | ||
b34976b6 | 2233 | static bfd_boolean |
252b5132 RH |
2234 | coff_arm_merge_private_bfd_data (ibfd, obfd) |
2235 | bfd * ibfd; | |
2236 | bfd * obfd; | |
2237 | { | |
2238 | BFD_ASSERT (ibfd != NULL && obfd != NULL); | |
2239 | ||
2240 | if (ibfd == obfd) | |
b34976b6 | 2241 | return TRUE; |
252b5132 RH |
2242 | |
2243 | /* If the two formats are different we cannot merge anything. | |
2244 | This is not an error, since it is permissable to change the | |
2245 | input and output formats. */ | |
2246 | if ( ibfd->xvec->flavour != bfd_target_coff_flavour | |
2247 | || obfd->xvec->flavour != bfd_target_coff_flavour) | |
b34976b6 | 2248 | return TRUE; |
252b5132 | 2249 | |
5a6c6817 NC |
2250 | /* Determine what should happen if the input ARM architecture |
2251 | does not match the output ARM architecture. */ | |
2252 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
2253 | return FALSE; | |
2254 | ||
2255 | /* Verify that the APCS is the same for the two BFDs. */ | |
252b5132 RH |
2256 | if (APCS_SET (ibfd)) |
2257 | { | |
2258 | if (APCS_SET (obfd)) | |
2259 | { | |
2260 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2261 | if (APCS_26_FLAG (obfd) != APCS_26_FLAG (ibfd)) | |
2262 | { | |
2263 | _bfd_error_handler | |
2264 | /* xgettext: c-format */ | |
6c571f00 | 2265 | (_("ERROR: %s is compiled for APCS-%d, whereas %s is compiled for APCS-%d"), |
8f615d07 | 2266 | bfd_archive_filename (ibfd), APCS_26_FLAG (ibfd) ? 26 : 32, |
252b5132 RH |
2267 | bfd_get_filename (obfd), APCS_26_FLAG (obfd) ? 26 : 32 |
2268 | ); | |
2269 | ||
2270 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2271 | return FALSE; |
252b5132 | 2272 | } |
d70910e8 | 2273 | |
252b5132 RH |
2274 | if (APCS_FLOAT_FLAG (obfd) != APCS_FLOAT_FLAG (ibfd)) |
2275 | { | |
2276 | const char *msg; | |
2277 | ||
2278 | if (APCS_FLOAT_FLAG (ibfd)) | |
2279 | /* xgettext: c-format */ | |
6c571f00 | 2280 | msg = _("ERROR: %s passes floats in float registers, whereas %s passes them in integer registers"); |
252b5132 RH |
2281 | else |
2282 | /* xgettext: c-format */ | |
6c571f00 | 2283 | msg = _("ERROR: %s passes floats in integer registers, whereas %s passes them in float registers"); |
d70910e8 | 2284 | |
8f615d07 | 2285 | _bfd_error_handler (msg, bfd_archive_filename (ibfd), |
252b5132 RH |
2286 | bfd_get_filename (obfd)); |
2287 | ||
2288 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2289 | return FALSE; |
252b5132 | 2290 | } |
d70910e8 | 2291 | |
252b5132 RH |
2292 | if (PIC_FLAG (obfd) != PIC_FLAG (ibfd)) |
2293 | { | |
2294 | const char * msg; | |
2295 | ||
2296 | if (PIC_FLAG (ibfd)) | |
2297 | /* xgettext: c-format */ | |
6c571f00 | 2298 | msg = _("ERROR: %s is compiled as position independent code, whereas target %s is absolute position"); |
252b5132 RH |
2299 | else |
2300 | /* xgettext: c-format */ | |
6c571f00 | 2301 | msg = _("ERROR: %s is compiled as absolute position code, whereas target %s is position independent"); |
8f615d07 | 2302 | _bfd_error_handler (msg, bfd_archive_filename (ibfd), |
252b5132 RH |
2303 | bfd_get_filename (obfd)); |
2304 | ||
2305 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2306 | return FALSE; |
252b5132 RH |
2307 | } |
2308 | } | |
2309 | else | |
2310 | { | |
2311 | SET_APCS_FLAGS (obfd, APCS_26_FLAG (ibfd) | APCS_FLOAT_FLAG (ibfd) | PIC_FLAG (ibfd)); | |
d70910e8 | 2312 | |
252b5132 RH |
2313 | /* Set up the arch and fields as well as these are probably wrong. */ |
2314 | bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
2315 | } | |
2316 | } | |
2317 | ||
2318 | /* Check the interworking support. */ | |
2319 | if (INTERWORK_SET (ibfd)) | |
2320 | { | |
2321 | if (INTERWORK_SET (obfd)) | |
2322 | { | |
2323 | /* If the src and dest differ in their interworking issue a warning. */ | |
2324 | if (INTERWORK_FLAG (obfd) != INTERWORK_FLAG (ibfd)) | |
2325 | { | |
2326 | const char * msg; | |
2327 | ||
2328 | if (INTERWORK_FLAG (ibfd)) | |
2329 | /* xgettext: c-format */ | |
6c571f00 | 2330 | msg = _("Warning: %s supports interworking, whereas %s does not"); |
252b5132 RH |
2331 | else |
2332 | /* xgettext: c-format */ | |
6c571f00 | 2333 | msg = _("Warning: %s does not support interworking, whereas %s does"); |
d70910e8 | 2334 | |
8f615d07 | 2335 | _bfd_error_handler (msg, bfd_archive_filename (ibfd), |
252b5132 RH |
2336 | bfd_get_filename (obfd)); |
2337 | } | |
2338 | } | |
2339 | else | |
2340 | { | |
2341 | SET_INTERWORK_FLAG (obfd, INTERWORK_FLAG (ibfd)); | |
2342 | } | |
2343 | } | |
2344 | ||
b34976b6 | 2345 | return TRUE; |
252b5132 RH |
2346 | } |
2347 | ||
252b5132 RH |
2348 | /* Display the flags field. */ |
2349 | ||
b34976b6 | 2350 | static bfd_boolean |
252b5132 RH |
2351 | coff_arm_print_private_bfd_data (abfd, ptr) |
2352 | bfd * abfd; | |
2353 | PTR ptr; | |
2354 | { | |
2355 | FILE * file = (FILE *) ptr; | |
d70910e8 | 2356 | |
252b5132 | 2357 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
d70910e8 | 2358 | |
252b5132 RH |
2359 | /* xgettext:c-format */ |
2360 | fprintf (file, _("private flags = %x:"), coff_data (abfd)->flags); | |
d70910e8 | 2361 | |
252b5132 RH |
2362 | if (APCS_SET (abfd)) |
2363 | { | |
2364 | /* xgettext: APCS is ARM Prodecure Call Standard, it should not be translated. */ | |
2365 | fprintf (file, " [APCS-%d]", APCS_26_FLAG (abfd) ? 26 : 32); | |
2366 | ||
2367 | if (APCS_FLOAT_FLAG (abfd)) | |
2368 | fprintf (file, _(" [floats passed in float registers]")); | |
2369 | else | |
2370 | fprintf (file, _(" [floats passed in integer registers]")); | |
2371 | ||
2372 | if (PIC_FLAG (abfd)) | |
2373 | fprintf (file, _(" [position independent]")); | |
2374 | else | |
2375 | fprintf (file, _(" [absolute position]")); | |
2376 | } | |
d70910e8 | 2377 | |
252b5132 RH |
2378 | if (! INTERWORK_SET (abfd)) |
2379 | fprintf (file, _(" [interworking flag not initialised]")); | |
2380 | else if (INTERWORK_FLAG (abfd)) | |
2381 | fprintf (file, _(" [interworking supported]")); | |
2382 | else | |
2383 | fprintf (file, _(" [interworking not supported]")); | |
d70910e8 | 2384 | |
252b5132 | 2385 | fputc ('\n', file); |
d70910e8 | 2386 | |
b34976b6 | 2387 | return TRUE; |
252b5132 RH |
2388 | } |
2389 | ||
252b5132 RH |
2390 | /* Copies the given flags into the coff_tdata.flags field. |
2391 | Typically these flags come from the f_flags[] field of | |
2392 | the COFF filehdr structure, which contains important, | |
2393 | target specific information. | |
2394 | Note: Although this function is static, it is explicitly | |
2395 | called from both coffcode.h and peicode.h. */ | |
2396 | ||
b34976b6 | 2397 | static bfd_boolean |
252b5132 RH |
2398 | _bfd_coff_arm_set_private_flags (abfd, flags) |
2399 | bfd * abfd; | |
2400 | flagword flags; | |
2401 | { | |
2402 | flagword flag; | |
2403 | ||
2404 | BFD_ASSERT (abfd != NULL); | |
2405 | ||
2406 | flag = (flags & F_APCS26) ? F_APCS_26 : 0; | |
d70910e8 | 2407 | |
252b5132 RH |
2408 | /* Make sure that the APCS field has not been initialised to the opposite |
2409 | value. */ | |
2410 | if (APCS_SET (abfd) | |
2411 | && ( (APCS_26_FLAG (abfd) != flag) | |
2412 | || (APCS_FLOAT_FLAG (abfd) != (flags & F_APCS_FLOAT)) | |
948221a8 | 2413 | || (PIC_FLAG (abfd) != (flags & F_PIC)) |
252b5132 | 2414 | )) |
b34976b6 | 2415 | return FALSE; |
252b5132 RH |
2416 | |
2417 | flag |= (flags & (F_APCS_FLOAT | F_PIC)); | |
d70910e8 | 2418 | |
252b5132 RH |
2419 | SET_APCS_FLAGS (abfd, flag); |
2420 | ||
2421 | flag = (flags & F_INTERWORK); | |
d70910e8 | 2422 | |
252b5132 RH |
2423 | /* If the BFD has already had its interworking flag set, but it |
2424 | is different from the value that we have been asked to set, | |
2425 | then assume that that merged code will not support interworking | |
2426 | and set the flag accordingly. */ | |
2427 | if (INTERWORK_SET (abfd) && (INTERWORK_FLAG (abfd) != flag)) | |
2428 | { | |
2429 | if (flag) | |
2430 | /* xgettext: c-format */ | |
ae1a89b7 | 2431 | _bfd_error_handler (_("Warning: Not setting interworking flag of %s since it has already been specified as non-interworking"), |
8f615d07 | 2432 | bfd_archive_filename (abfd)); |
252b5132 RH |
2433 | else |
2434 | /* xgettext: c-format */ | |
2435 | _bfd_error_handler (_("Warning: Clearing the interworking flag of %s due to outside request"), | |
8f615d07 | 2436 | bfd_archive_filename (abfd)); |
252b5132 RH |
2437 | flag = 0; |
2438 | } | |
2439 | ||
2440 | SET_INTERWORK_FLAG (abfd, flag); | |
2441 | ||
b34976b6 | 2442 | return TRUE; |
252b5132 RH |
2443 | } |
2444 | ||
252b5132 RH |
2445 | /* Copy the important parts of the target specific data |
2446 | from one instance of a BFD to another. */ | |
2447 | ||
b34976b6 | 2448 | static bfd_boolean |
252b5132 RH |
2449 | coff_arm_copy_private_bfd_data (src, dest) |
2450 | bfd * src; | |
2451 | bfd * dest; | |
2452 | { | |
2453 | BFD_ASSERT (src != NULL && dest != NULL); | |
d70910e8 | 2454 | |
252b5132 | 2455 | if (src == dest) |
b34976b6 | 2456 | return TRUE; |
252b5132 RH |
2457 | |
2458 | /* If the destination is not in the same format as the source, do not do | |
2459 | the copy. */ | |
2460 | if (src->xvec != dest->xvec) | |
b34976b6 | 2461 | return TRUE; |
252b5132 RH |
2462 | |
2463 | /* copy the flags field */ | |
2464 | if (APCS_SET (src)) | |
2465 | { | |
2466 | if (APCS_SET (dest)) | |
2467 | { | |
2468 | /* If the src and dest have different APCS flag bits set, fail. */ | |
2469 | if (APCS_26_FLAG (dest) != APCS_26_FLAG (src)) | |
b34976b6 | 2470 | return FALSE; |
d70910e8 | 2471 | |
252b5132 | 2472 | if (APCS_FLOAT_FLAG (dest) != APCS_FLOAT_FLAG (src)) |
b34976b6 | 2473 | return FALSE; |
d70910e8 | 2474 | |
252b5132 | 2475 | if (PIC_FLAG (dest) != PIC_FLAG (src)) |
b34976b6 | 2476 | return FALSE; |
252b5132 RH |
2477 | } |
2478 | else | |
2479 | SET_APCS_FLAGS (dest, APCS_26_FLAG (src) | APCS_FLOAT_FLAG (src) | |
2480 | | PIC_FLAG (src)); | |
2481 | } | |
2482 | ||
2483 | if (INTERWORK_SET (src)) | |
2484 | { | |
2485 | if (INTERWORK_SET (dest)) | |
2486 | { | |
2487 | /* If the src and dest have different interworking flags then turn | |
2488 | off the interworking bit. */ | |
2489 | if (INTERWORK_FLAG (dest) != INTERWORK_FLAG (src)) | |
2490 | { | |
2491 | if (INTERWORK_FLAG (dest)) | |
2492 | { | |
2493 | /* xgettext:c-format */ | |
ae1a89b7 PT |
2494 | _bfd_error_handler (("\ |
2495 | Warning: Clearing the interworking flag of %s because non-interworking code in %s has been linked with it"), | |
252b5132 | 2496 | bfd_get_filename (dest), |
8f615d07 | 2497 | bfd_archive_filename (src)); |
252b5132 | 2498 | } |
d70910e8 | 2499 | |
252b5132 RH |
2500 | SET_INTERWORK_FLAG (dest, 0); |
2501 | } | |
2502 | } | |
2503 | else | |
2504 | { | |
2505 | SET_INTERWORK_FLAG (dest, INTERWORK_FLAG (src)); | |
2506 | } | |
2507 | } | |
2508 | ||
b34976b6 | 2509 | return TRUE; |
252b5132 RH |
2510 | } |
2511 | ||
2512 | /* Note: the definitions here of LOCAL_LABEL_PREFIX and USER_LABEL_PREIFX | |
c31c1f70 NC |
2513 | *must* match the definitions in gcc/config/arm/{coff|semi|aout}.h. */ |
2514 | #define LOCAL_LABEL_PREFIX "" | |
252b5132 RH |
2515 | #ifndef USER_LABEL_PREFIX |
2516 | #define USER_LABEL_PREFIX "_" | |
2517 | #endif | |
2518 | ||
f8111282 NC |
2519 | /* Like _bfd_coff_is_local_label_name, but |
2520 | a) test against USER_LABEL_PREFIX, to avoid stripping labels known to be | |
2521 | non-local. | |
2522 | b) Allow other prefixes than ".", e.g. an empty prefix would cause all | |
2523 | labels of the form Lxxx to be stripped. */ | |
b34976b6 | 2524 | static bfd_boolean |
252b5132 | 2525 | coff_arm_is_local_label_name (abfd, name) |
5f771d47 | 2526 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2527 | const char * name; |
2528 | { | |
252b5132 RH |
2529 | #ifdef USER_LABEL_PREFIX |
2530 | if (USER_LABEL_PREFIX[0] != 0) | |
2531 | { | |
2532 | if (strncmp (name, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX)) == 0) | |
b34976b6 | 2533 | return FALSE; |
252b5132 RH |
2534 | } |
2535 | #endif | |
f8111282 NC |
2536 | |
2537 | #ifdef LOCAL_LABEL_PREFIX | |
2538 | /* If there is a prefix for local labels then look for this. | |
d70910e8 KH |
2539 | If the prefix exists, but it is empty, then ignore the test. */ |
2540 | ||
f8111282 | 2541 | if (LOCAL_LABEL_PREFIX[0] != 0) |
252b5132 | 2542 | { |
dc810e39 | 2543 | size_t len = strlen (LOCAL_LABEL_PREFIX); |
d70910e8 | 2544 | |
f8111282 | 2545 | if (strncmp (name, LOCAL_LABEL_PREFIX, len) != 0) |
b34976b6 | 2546 | return FALSE; |
d70910e8 | 2547 | |
f8111282 NC |
2548 | /* Perform the checks below for the rest of the name. */ |
2549 | name += len; | |
252b5132 | 2550 | } |
f8111282 | 2551 | #endif |
d70910e8 | 2552 | |
f8111282 | 2553 | return name[0] == 'L'; |
252b5132 RH |
2554 | } |
2555 | ||
2556 | /* This piece of machinery exists only to guarantee that the bfd that holds | |
d70910e8 | 2557 | the glue section is written last. |
252b5132 RH |
2558 | |
2559 | This does depend on bfd_make_section attaching a new section to the | |
d70910e8 | 2560 | end of the section list for the bfd. |
252b5132 RH |
2561 | |
2562 | krk@cygnus.com */ | |
2563 | ||
b34976b6 | 2564 | static bfd_boolean |
252b5132 RH |
2565 | coff_arm_link_output_has_begun (sub, info) |
2566 | bfd * sub; | |
2567 | struct coff_final_link_info * info; | |
2568 | { | |
2569 | return (sub->output_has_begun | |
2570 | || sub == coff_arm_hash_table (info->info)->bfd_of_glue_owner); | |
2571 | } | |
2572 | ||
b34976b6 | 2573 | static bfd_boolean |
252b5132 | 2574 | coff_arm_final_link_postscript (abfd, pfinfo) |
5f771d47 | 2575 | bfd * abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2576 | struct coff_final_link_info * pfinfo; |
2577 | { | |
2578 | struct coff_arm_link_hash_table * globals; | |
2579 | ||
2580 | globals = coff_arm_hash_table (pfinfo->info); | |
d70910e8 | 2581 | |
252b5132 | 2582 | BFD_ASSERT (globals != NULL); |
d70910e8 | 2583 | |
252b5132 RH |
2584 | if (globals->bfd_of_glue_owner != NULL) |
2585 | { | |
2586 | if (! _bfd_coff_link_input_bfd (pfinfo, globals->bfd_of_glue_owner)) | |
b34976b6 | 2587 | return FALSE; |
d70910e8 | 2588 | |
b34976b6 | 2589 | globals->bfd_of_glue_owner->output_has_begun = TRUE; |
252b5132 | 2590 | } |
d70910e8 | 2591 | |
5a6c6817 | 2592 | return bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
252b5132 RH |
2593 | } |
2594 | ||
252b5132 RH |
2595 | #include "coffcode.h" |
2596 | ||
c3c89269 NC |
2597 | #ifndef TARGET_LITTLE_SYM |
2598 | #define TARGET_LITTLE_SYM armcoff_little_vec | |
252b5132 | 2599 | #endif |
c3c89269 NC |
2600 | #ifndef TARGET_LITTLE_NAME |
2601 | #define TARGET_LITTLE_NAME "coff-arm-little" | |
252b5132 | 2602 | #endif |
c3c89269 NC |
2603 | #ifndef TARGET_BIG_SYM |
2604 | #define TARGET_BIG_SYM armcoff_big_vec | |
252b5132 | 2605 | #endif |
c3c89269 NC |
2606 | #ifndef TARGET_BIG_NAME |
2607 | #define TARGET_BIG_NAME "coff-arm-big" | |
252b5132 | 2608 | #endif |
252b5132 | 2609 | |
c3c89269 NC |
2610 | #ifndef TARGET_UNDERSCORE |
2611 | #define TARGET_UNDERSCORE 0 | |
252b5132 | 2612 | #endif |
c3c89269 | 2613 | |
f78c5281 | 2614 | #ifndef EXTRA_S_FLAGS |
c3c89269 | 2615 | #ifdef COFF_WITH_PE |
20650579 | 2616 | #define EXTRA_S_FLAGS (SEC_CODE | SEC_LINK_ONCE | SEC_LINK_DUPLICATES) |
252b5132 | 2617 | #else |
20650579 | 2618 | #define EXTRA_S_FLAGS SEC_CODE |
252b5132 | 2619 | #endif |
f78c5281 | 2620 | #endif |
252b5132 | 2621 | |
c3c89269 NC |
2622 | /* Forward declaration for use initialising alternative_target field. */ |
2623 | extern const bfd_target TARGET_BIG_SYM ; | |
252b5132 | 2624 | |
c3c89269 | 2625 | /* Target vectors. */ |
3fa78519 SS |
2626 | CREATE_LITTLE_COFF_TARGET_VEC (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_BIG_SYM, COFF_SWAP_TABLE) |
2627 | CREATE_BIG_COFF_TARGET_VEC (TARGET_BIG_SYM, TARGET_BIG_NAME, D_PAGED, EXTRA_S_FLAGS, TARGET_UNDERSCORE, & TARGET_LITTLE_SYM, COFF_SWAP_TABLE) |