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0f64bb02 CM |
1 | /* ADI Blackfin BFD support for 32-bit ELF. |
2 | Copyright 2005 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, | |
19 | USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/bfin.h" | |
26 | ||
27 | /* Handling expression relocations for blackfin. Blackfin | |
28 | will generate relocations in an expression form with a stack. | |
29 | A relocation such as P1.H = _typenames-4000000; | |
30 | will generate the following relocs at offset 4: | |
31 | 00000004 R_expst_push _typenames | |
32 | 00000004 R_expst_const .__constant | |
33 | 00000004 R_expst_sub .__operator | |
34 | 00000006 R_huimm16 .__operator | |
35 | ||
36 | The .__constant and .__operator symbol names are fake. | |
37 | Special case is a single relocation | |
38 | P1.L = _typenames; generates | |
39 | 00000002 R_luimm16 _typenames | |
40 | ||
41 | Thus, if you get a R_luimm16, R_huimm16, R_imm16, | |
42 | if the stack is not empty, pop the stack and | |
43 | put the value, else do the normal thing | |
44 | We will currently assume that the max the stack | |
45 | would grow to is 100. . */ | |
46 | ||
47 | #define RELOC_STACK_SIZE 100 | |
48 | static bfd_vma reloc_stack[RELOC_STACK_SIZE]; | |
49 | static unsigned int reloc_stack_tos = 0; | |
50 | ||
51 | #define is_reloc_stack_empty() ((reloc_stack_tos > 0) ? 0 : 1) | |
52 | ||
53 | static void | |
54 | reloc_stack_push (bfd_vma value) | |
55 | { | |
56 | reloc_stack[reloc_stack_tos++] = value; | |
57 | } | |
58 | ||
59 | static bfd_vma | |
60 | reloc_stack_pop (void) | |
61 | { | |
62 | return reloc_stack[--reloc_stack_tos]; | |
63 | } | |
64 | ||
65 | static bfd_vma | |
66 | reloc_stack_operate (unsigned int oper) | |
67 | { | |
68 | bfd_vma value; | |
69 | switch (oper) | |
70 | { | |
71 | case R_add: | |
72 | { | |
73 | value = | |
74 | reloc_stack[reloc_stack_tos - 2] + reloc_stack[reloc_stack_tos - 1]; | |
75 | reloc_stack_tos -= 2; | |
76 | break; | |
77 | } | |
78 | case R_sub: | |
79 | { | |
80 | value = | |
81 | reloc_stack[reloc_stack_tos - 2] - reloc_stack[reloc_stack_tos - 1]; | |
82 | reloc_stack_tos -= 2; | |
83 | break; | |
84 | } | |
85 | case R_mult: | |
86 | { | |
87 | value = | |
88 | reloc_stack[reloc_stack_tos - 2] * reloc_stack[reloc_stack_tos - 1]; | |
89 | reloc_stack_tos -= 2; | |
90 | break; | |
91 | } | |
92 | case R_div: | |
93 | { | |
94 | if (reloc_stack[reloc_stack_tos - 1] == 0) | |
95 | { | |
96 | _bfd_abort (__FILE__, __LINE__, _("Division by zero. ")); | |
97 | } | |
98 | else | |
99 | { | |
100 | value = | |
101 | reloc_stack[reloc_stack_tos - 2] / reloc_stack[reloc_stack_tos - 1]; | |
102 | reloc_stack_tos -= 2; | |
103 | } | |
104 | break; | |
105 | } | |
106 | case R_mod: | |
107 | { | |
108 | value = | |
109 | reloc_stack[reloc_stack_tos - 2] % reloc_stack[reloc_stack_tos - 1]; | |
110 | reloc_stack_tos -= 2; | |
111 | break; | |
112 | } | |
113 | case R_lshift: | |
114 | { | |
115 | value = | |
116 | reloc_stack[reloc_stack_tos - 2] << reloc_stack[reloc_stack_tos - | |
117 | 1]; | |
118 | reloc_stack_tos -= 2; | |
119 | break; | |
120 | } | |
121 | case R_rshift: | |
122 | { | |
123 | value = | |
124 | reloc_stack[reloc_stack_tos - 2] >> reloc_stack[reloc_stack_tos - | |
125 | 1]; | |
126 | reloc_stack_tos -= 2; | |
127 | break; | |
128 | } | |
129 | case R_and: | |
130 | { | |
131 | value = | |
132 | reloc_stack[reloc_stack_tos - 2] & reloc_stack[reloc_stack_tos - 1]; | |
133 | reloc_stack_tos -= 2; | |
134 | break; | |
135 | } | |
136 | case R_or: | |
137 | { | |
138 | value = | |
139 | reloc_stack[reloc_stack_tos - 2] | reloc_stack[reloc_stack_tos - 1]; | |
140 | reloc_stack_tos -= 2; | |
141 | break; | |
142 | } | |
143 | case R_xor: | |
144 | { | |
145 | value = | |
146 | reloc_stack[reloc_stack_tos - 2] ^ reloc_stack[reloc_stack_tos - 1]; | |
147 | reloc_stack_tos -= 2; | |
148 | break; | |
149 | } | |
150 | case R_land: | |
151 | { | |
152 | value = reloc_stack[reloc_stack_tos - 2] | |
153 | && reloc_stack[reloc_stack_tos - 1]; | |
154 | reloc_stack_tos -= 2; | |
155 | break; | |
156 | } | |
157 | case R_lor: | |
158 | { | |
159 | value = reloc_stack[reloc_stack_tos - 2] | |
160 | || reloc_stack[reloc_stack_tos - 1]; | |
161 | reloc_stack_tos -= 2; | |
162 | break; | |
163 | } | |
164 | case R_neg: | |
165 | { | |
166 | value = -reloc_stack[reloc_stack_tos - 1]; | |
167 | reloc_stack_tos--; | |
168 | break; | |
169 | } | |
170 | case R_comp: | |
171 | { | |
172 | value = ~reloc_stack[reloc_stack_tos - 1]; | |
173 | reloc_stack_tos -= 1; | |
174 | break; | |
175 | } | |
176 | default: | |
177 | { | |
178 | fprintf (stderr, "bfin relocation : Internal bug\n"); | |
179 | return 0; | |
180 | } | |
181 | } | |
182 | ||
183 | reloc_stack_push (value); | |
184 | ||
185 | return value; | |
186 | } | |
187 | ||
188 | /* FUNCTION : bfin_pltpc_reloc | |
189 | ABSTRACT : TODO : figure out how to handle pltpc relocs. */ | |
190 | static bfd_reloc_status_type | |
191 | bfin_pltpc_reloc ( | |
192 | bfd *abfd ATTRIBUTE_UNUSED, | |
193 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
194 | asymbol *symbol ATTRIBUTE_UNUSED, | |
195 | PTR data ATTRIBUTE_UNUSED, | |
196 | asection *input_section ATTRIBUTE_UNUSED, | |
197 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
198 | char **error_message ATTRIBUTE_UNUSED) | |
199 | { | |
200 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
201 | return flag; | |
202 | } | |
203 | \f | |
204 | ||
205 | static bfd_reloc_status_type | |
206 | bfin_pcrel24_reloc (bfd *abfd, | |
207 | arelent *reloc_entry, | |
208 | asymbol *symbol, | |
209 | PTR data, | |
210 | asection *input_section, | |
211 | bfd *output_bfd, | |
212 | char **error_message ATTRIBUTE_UNUSED) | |
213 | { | |
214 | bfd_vma relocation; | |
215 | bfd_size_type addr = reloc_entry->address; | |
216 | bfd_vma output_base = 0; | |
217 | reloc_howto_type *howto = reloc_entry->howto; | |
218 | asection *output_section; | |
219 | bfd_boolean relocatable = (output_bfd != NULL); | |
220 | ||
221 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
222 | return bfd_reloc_outofrange; | |
223 | ||
224 | if (!is_reloc_stack_empty ()) | |
225 | relocation = reloc_stack_pop(); | |
226 | else | |
227 | { | |
228 | if (bfd_is_und_section (symbol->section) | |
229 | && (symbol->flags & BSF_WEAK) == 0 | |
230 | && !relocatable) | |
231 | return bfd_reloc_undefined; | |
232 | ||
233 | if (bfd_is_com_section (symbol->section)) | |
234 | relocation = 0; | |
235 | else | |
236 | relocation = symbol->value; | |
237 | ||
238 | output_section = symbol->section->output_section; | |
239 | ||
240 | if (relocatable) | |
241 | output_base = 0; | |
242 | else | |
243 | output_base = output_section->vma; | |
244 | ||
245 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
246 | relocation += output_base + symbol->section->output_offset; | |
247 | ||
248 | if (!relocatable && !strcmp (symbol->name, symbol->section->name)) | |
249 | relocation += reloc_entry->addend; | |
250 | } | |
251 | ||
252 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
253 | relocation -= reloc_entry->address; | |
254 | ||
255 | if (howto->complain_on_overflow != complain_overflow_dont) | |
256 | { | |
257 | bfd_reloc_status_type status; | |
258 | status= bfd_check_overflow (howto->complain_on_overflow, | |
259 | howto->bitsize, | |
260 | howto->rightshift, | |
261 | bfd_arch_bits_per_address(abfd), | |
262 | relocation); | |
263 | if (status != bfd_reloc_ok) | |
264 | return status; | |
265 | } | |
266 | ||
267 | /* if rightshift is 1 and the number odd, return error. */ | |
268 | if (howto->rightshift && (relocation & 0x01)) | |
269 | { | |
270 | fprintf(stderr, "relocation should be even number\n"); | |
271 | return bfd_reloc_overflow; | |
272 | } | |
273 | ||
274 | relocation >>= (bfd_vma) howto->rightshift; | |
275 | /* Shift everything up to where it's going to be used. */ | |
276 | ||
277 | relocation <<= (bfd_vma) howto->bitpos; | |
278 | ||
279 | if (relocatable) | |
280 | { | |
281 | reloc_entry->address += input_section->output_offset; | |
282 | reloc_entry->addend += symbol->section->output_offset; | |
283 | } | |
284 | ||
285 | { | |
286 | short x; | |
287 | ||
288 | /* We are getting reloc_entry->address 2 byte off from | |
289 | the start of instruction. Assuming absolute postion | |
290 | of the reloc data. But, following code had been written assuming | |
291 | reloc address is starting at begining of instruction. | |
292 | To compensate that I have increased the value of | |
293 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
294 | ||
295 | relocation += 1; | |
296 | x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2); | |
297 | x = (x & 0xff00) | ((relocation >> 16) & 0xff); | |
298 | bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2); | |
299 | ||
300 | x = bfd_get_16 (abfd, (bfd_byte *) data + addr); | |
301 | x = relocation & 0xFFFF; | |
302 | bfd_put_16 (abfd, x, (unsigned char *) data + addr ); | |
303 | } | |
304 | return bfd_reloc_ok; | |
305 | } | |
306 | ||
307 | static bfd_reloc_status_type | |
308 | bfin_push_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
309 | arelent *reloc_entry, | |
310 | asymbol *symbol, | |
311 | PTR data ATTRIBUTE_UNUSED, | |
312 | asection *input_section, | |
313 | bfd *output_bfd, | |
314 | char **error_message ATTRIBUTE_UNUSED) | |
315 | { | |
316 | bfd_vma relocation; | |
317 | bfd_vma output_base = 0; | |
318 | asection *output_section; | |
319 | bfd_boolean relocatable = (output_bfd != NULL); | |
320 | ||
321 | if (bfd_is_und_section (symbol->section) | |
322 | && (symbol->flags & BSF_WEAK) == 0 | |
323 | && !relocatable) | |
324 | return bfd_reloc_undefined; | |
325 | ||
326 | /* Is the address of the relocation really within the section? */ | |
327 | if (reloc_entry->address > bfd_get_section_limit(abfd, input_section)) | |
328 | return bfd_reloc_outofrange; | |
329 | ||
330 | output_section = symbol->section->output_section; | |
331 | relocation = symbol->value; | |
332 | ||
333 | /* Convert input-section-relative symbol value to absolute. */ | |
334 | if (relocatable) | |
335 | output_base = 0; | |
336 | else | |
337 | output_base = output_section->vma; | |
338 | ||
339 | if (!relocatable || !strcmp(symbol->name, symbol->section->name)) | |
340 | relocation += output_base + symbol->section->output_offset; | |
341 | ||
342 | /* Add in supplied addend. */ | |
343 | relocation += reloc_entry->addend; | |
344 | ||
345 | if (relocatable) | |
346 | { | |
347 | reloc_entry->address += input_section->output_offset; | |
348 | reloc_entry->addend += symbol->section->output_offset; | |
349 | } | |
350 | ||
351 | /* Now that we have the value, push it. */ | |
352 | reloc_stack_push (relocation); | |
353 | ||
354 | return bfd_reloc_ok; | |
355 | } | |
356 | ||
357 | static bfd_reloc_status_type | |
358 | bfin_oper_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
359 | arelent *reloc_entry, | |
360 | asymbol *symbol ATTRIBUTE_UNUSED, | |
361 | PTR data ATTRIBUTE_UNUSED, | |
362 | asection *input_section, | |
363 | bfd *output_bfd, | |
364 | char **error_message ATTRIBUTE_UNUSED) | |
365 | { | |
366 | bfd_boolean relocatable = (output_bfd != NULL); | |
367 | ||
368 | /* Just call the operation based on the reloc_type. */ | |
369 | reloc_stack_operate (reloc_entry->howto->type); | |
370 | ||
371 | if (relocatable) | |
372 | reloc_entry->address += input_section->output_offset; | |
373 | ||
374 | return bfd_reloc_ok; | |
375 | } | |
376 | ||
377 | static bfd_reloc_status_type | |
378 | bfin_const_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
379 | arelent *reloc_entry, | |
380 | asymbol *symbol ATTRIBUTE_UNUSED, | |
381 | PTR data ATTRIBUTE_UNUSED, | |
382 | asection *input_section, | |
383 | bfd *output_bfd, | |
384 | char **error_message ATTRIBUTE_UNUSED) | |
385 | { | |
386 | bfd_boolean relocatable = (output_bfd != NULL); | |
387 | ||
388 | /* Push the addend portion of the relocation. */ | |
389 | reloc_stack_push (reloc_entry->addend); | |
390 | ||
391 | if (relocatable) | |
392 | reloc_entry->address += input_section->output_offset; | |
393 | ||
394 | return bfd_reloc_ok; | |
395 | } | |
396 | ||
397 | static bfd_reloc_status_type | |
398 | bfin_imm16_reloc (bfd *abfd, | |
399 | arelent *reloc_entry, | |
400 | asymbol *symbol, | |
401 | PTR data, | |
402 | asection *input_section, | |
403 | bfd *output_bfd, | |
404 | char **error_message ATTRIBUTE_UNUSED) | |
405 | { | |
406 | bfd_vma relocation, x; | |
407 | bfd_size_type reloc_addr = reloc_entry->address; | |
408 | bfd_vma output_base = 0; | |
409 | reloc_howto_type *howto = reloc_entry->howto; | |
410 | asection *output_section; | |
411 | bfd_boolean relocatable = (output_bfd != NULL); | |
412 | ||
413 | /* Is the address of the relocation really within the section? */ | |
414 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
415 | return bfd_reloc_outofrange; | |
416 | ||
417 | if (is_reloc_stack_empty ()) | |
418 | { | |
419 | if (bfd_is_und_section (symbol->section) | |
420 | && (symbol->flags & BSF_WEAK) == 0 | |
421 | && !relocatable) | |
422 | return bfd_reloc_undefined; | |
423 | ||
424 | output_section = symbol->section->output_section; | |
425 | relocation = symbol->value; | |
426 | ||
427 | /* Convert input-section-relative symbol value to absolute. */ | |
428 | if (relocatable) | |
429 | output_base = 0; | |
430 | else | |
431 | output_base = output_section->vma; | |
432 | ||
433 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
434 | relocation += output_base + symbol->section->output_offset; | |
435 | ||
f4707595 JZ |
436 | /* Add in supplied addend. */ |
437 | relocation += reloc_entry->addend; | |
0f64bb02 CM |
438 | } |
439 | else | |
440 | { | |
441 | relocation = reloc_stack_pop (); | |
442 | } | |
443 | ||
444 | if (relocatable) | |
445 | { | |
446 | reloc_entry->address += input_section->output_offset; | |
447 | reloc_entry->addend += symbol->section->output_offset; | |
448 | } | |
449 | else | |
450 | { | |
451 | reloc_entry->addend = 0; | |
452 | } | |
453 | ||
454 | if (howto->complain_on_overflow != complain_overflow_dont) | |
455 | { | |
456 | bfd_reloc_status_type flag; | |
457 | flag = bfd_check_overflow (howto->complain_on_overflow, | |
458 | howto->bitsize, | |
459 | howto->rightshift, | |
460 | bfd_arch_bits_per_address(abfd), | |
461 | relocation); | |
462 | if (flag != bfd_reloc_ok) | |
463 | return flag; | |
464 | } | |
465 | ||
466 | ||
467 | /* Here the variable relocation holds the final address of the | |
468 | symbol we are relocating against, plus any addend. */ | |
469 | ||
0f64bb02 CM |
470 | relocation >>= (bfd_vma) howto->rightshift; |
471 | x = relocation; | |
472 | bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr); | |
473 | return bfd_reloc_ok; | |
474 | } | |
475 | ||
476 | ||
477 | static bfd_reloc_status_type | |
478 | bfin_byte4_reloc (bfd *abfd, | |
479 | arelent *reloc_entry, | |
480 | asymbol *symbol, | |
481 | PTR data, | |
482 | asection *input_section, | |
483 | bfd *output_bfd, | |
484 | char **error_message ATTRIBUTE_UNUSED) | |
485 | { | |
486 | bfd_vma relocation, x; | |
487 | bfd_size_type addr = reloc_entry->address; | |
488 | bfd_vma output_base = 0; | |
489 | asection *output_section; | |
490 | bfd_boolean relocatable = (output_bfd != NULL); | |
491 | ||
492 | /* Is the address of the relocation really within the section? */ | |
493 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
494 | return bfd_reloc_outofrange; | |
495 | ||
496 | if (is_reloc_stack_empty ()) | |
497 | { | |
498 | if (bfd_is_und_section (symbol->section) | |
499 | && (symbol->flags & BSF_WEAK) == 0 | |
500 | && !relocatable) | |
501 | return bfd_reloc_undefined; | |
502 | ||
503 | output_section = symbol->section->output_section; | |
504 | relocation = symbol->value; | |
505 | /* Convert input-section-relative symbol value to absolute. */ | |
506 | if (relocatable) | |
507 | output_base = 0; | |
508 | else | |
509 | output_base = output_section->vma; | |
510 | ||
511 | if ((symbol->name | |
512 | && symbol->section->name | |
513 | && !strcmp (symbol->name, symbol->section->name)) | |
514 | || !relocatable) | |
515 | { | |
516 | relocation += output_base + symbol->section->output_offset; | |
517 | } | |
518 | ||
519 | relocation += reloc_entry->addend; | |
520 | } | |
521 | else | |
522 | { | |
523 | relocation = reloc_stack_pop(); | |
524 | relocation += reloc_entry->addend; | |
525 | } | |
526 | ||
527 | if (relocatable) | |
528 | { | |
529 | /* This output will be relocatable ... like ld -r. */ | |
530 | reloc_entry->address += input_section->output_offset; | |
531 | reloc_entry->addend += symbol->section->output_offset; | |
532 | } | |
533 | else | |
534 | { | |
535 | reloc_entry->addend = 0; | |
536 | } | |
537 | ||
538 | /* Here the variable relocation holds the final address of the | |
539 | symbol we are relocating against, plus any addend. */ | |
540 | x = relocation & 0xFFFF0000; | |
541 | x >>=16; | |
542 | bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2); | |
543 | ||
544 | x = relocation & 0x0000FFFF; | |
545 | bfd_put_16 (abfd, x, (unsigned char *) data + addr); | |
546 | return bfd_reloc_ok; | |
547 | } | |
548 | ||
549 | /* bfin_bfd_reloc handles the blackfin arithmetic relocations. | |
550 | Use this instead of bfd_perform_relocation. */ | |
551 | static bfd_reloc_status_type | |
552 | bfin_bfd_reloc (bfd *abfd, | |
553 | arelent *reloc_entry, | |
554 | asymbol *symbol, | |
555 | PTR data, | |
556 | asection *input_section, | |
557 | bfd *output_bfd, | |
558 | char **error_message ATTRIBUTE_UNUSED) | |
559 | { | |
560 | bfd_vma relocation; | |
561 | bfd_size_type addr = reloc_entry->address; | |
562 | bfd_vma output_base = 0; | |
563 | reloc_howto_type *howto = reloc_entry->howto; | |
564 | asection *output_section; | |
565 | bfd_boolean relocatable = (output_bfd != NULL); | |
566 | ||
567 | /* Is the address of the relocation really within the section? */ | |
568 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
569 | return bfd_reloc_outofrange; | |
570 | ||
571 | if (is_reloc_stack_empty()) | |
572 | { | |
573 | if (bfd_is_und_section (symbol->section) | |
574 | && (symbol->flags & BSF_WEAK) == 0 | |
575 | && !relocatable) | |
576 | return bfd_reloc_undefined; | |
577 | ||
578 | /* Get symbol value. (Common symbols are special.) */ | |
579 | if (bfd_is_com_section (symbol->section)) | |
580 | relocation = 0; | |
581 | else | |
582 | relocation = symbol->value; | |
583 | ||
584 | output_section = symbol->section->output_section; | |
585 | ||
586 | /* Convert input-section-relative symbol value to absolute. */ | |
587 | if (relocatable) | |
588 | output_base = 0; | |
589 | else | |
590 | output_base = output_section->vma; | |
591 | ||
592 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
593 | relocation += output_base + symbol->section->output_offset; | |
594 | ||
595 | if (!relocatable && !strcmp (symbol->name, symbol->section->name)) | |
596 | { | |
597 | /* Add in supplied addend. */ | |
598 | relocation += reloc_entry->addend; | |
599 | } | |
600 | ||
601 | } | |
602 | else | |
603 | { | |
604 | relocation = reloc_stack_pop(); | |
605 | } | |
606 | ||
607 | /* Here the variable relocation holds the final address of the | |
608 | symbol we are relocating against, plus any addend. */ | |
609 | ||
610 | if (howto->pc_relative == TRUE) | |
611 | { | |
612 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
613 | ||
614 | if (howto->pcrel_offset == TRUE) | |
615 | relocation -= reloc_entry->address; | |
616 | } | |
617 | ||
618 | if (relocatable) | |
619 | { | |
620 | reloc_entry->address += input_section->output_offset; | |
621 | reloc_entry->addend += symbol->section->output_offset; | |
622 | } | |
623 | ||
624 | if (howto->complain_on_overflow != complain_overflow_dont) | |
625 | { | |
626 | bfd_reloc_status_type status; | |
627 | ||
628 | status = bfd_check_overflow (howto->complain_on_overflow, | |
629 | howto->bitsize, | |
630 | howto->rightshift, | |
631 | bfd_arch_bits_per_address(abfd), | |
632 | relocation); | |
633 | if (status != bfd_reloc_ok) | |
634 | return status; | |
635 | } | |
636 | ||
637 | /* If rightshift is 1 and the number odd, return error. */ | |
638 | if (howto->rightshift && (relocation & 0x01)) | |
639 | { | |
640 | fprintf(stderr, "relocation should be even number\n"); | |
641 | return bfd_reloc_overflow; | |
642 | } | |
643 | ||
644 | relocation >>= (bfd_vma) howto->rightshift; | |
645 | ||
646 | /* Shift everything up to where it's going to be used. */ | |
647 | ||
648 | relocation <<= (bfd_vma) howto->bitpos; | |
649 | ||
650 | #define DOIT(x) \ | |
651 | x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask)) | |
652 | ||
653 | /* handle 8 and 16 bit relocations here. */ | |
654 | switch (howto->size) | |
655 | { | |
656 | case 0: | |
657 | { | |
658 | char x = bfd_get_8 (abfd, (char *) data + addr); | |
659 | DOIT (x); | |
660 | bfd_put_8 (abfd, x, (unsigned char *) data + addr); | |
661 | } | |
662 | break; | |
663 | ||
664 | case 1: | |
665 | { | |
666 | unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr); | |
667 | DOIT (x); | |
668 | bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr); | |
669 | } | |
670 | break; | |
671 | ||
672 | default: | |
673 | return bfd_reloc_other; | |
674 | } | |
675 | ||
676 | return bfd_reloc_ok; | |
677 | } | |
678 | ||
679 | #if 0 | |
680 | static bfd_reloc_status_type bfin_bfd_reloc | |
681 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
682 | ||
683 | static bfd_reloc_status_type bfin_imm16_reloc | |
684 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
685 | ||
686 | static bfd_reloc_status_type bfin_pcrel24_reloc | |
687 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
688 | ||
689 | static bfd_reloc_status_type bfin_pltpc_reloc | |
690 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
691 | ||
692 | static bfd_reloc_status_type bfin_const_reloc | |
693 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
694 | ||
695 | static bfd_reloc_status_type bfin_oper_reloc | |
696 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
697 | ||
698 | static bfd_reloc_status_type bfin_byte4_reloc | |
699 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
700 | ||
701 | static bfd_reloc_status_type bfin_push_reloc | |
702 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
703 | ||
704 | static bfd_boolean bfin_is_local_label_name | |
705 | PARAMS ((bfd *, const char *)); | |
706 | #endif | |
707 | bfd_boolean bfd_bfin_elf32_create_embedded_relocs | |
708 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **)); | |
709 | ||
710 | ||
711 | /* HOWTO Table for blackfin. | |
712 | Blackfin relocations are fairly complicated. | |
713 | Some of the salient features are | |
714 | a. Even numbered offsets. A number of (not all) relocations are | |
715 | even numbered. This means that the rightmost bit is not stored. | |
716 | Needs to right shift by 1 and check to see if value is not odd | |
717 | b. A relocation can be an expression. An expression takes on | |
718 | a variety of relocations arranged in a stack. | |
719 | As a result, we cannot use the standard generic function as special | |
720 | function. We will have our own, which is very similar to the standard | |
721 | generic function except that it understands how to get the value from | |
722 | the relocation stack. . */ | |
723 | ||
724 | #define BFIN_RELOC_MIN 0 | |
725 | #define BFIN_RELOC_MAX 0x13 | |
726 | #define BFIN_GNUEXT_RELOC_MIN 0x40 | |
727 | #define BFIN_GNUEXT_RELOC_MAX 0x43 | |
728 | #define BFIN_ARELOC_MIN 0xE0 | |
729 | #define BFIN_ARELOC_MAX 0xF3 | |
730 | ||
731 | static reloc_howto_type bfin_howto_table [] = | |
732 | { | |
733 | /* This reloc does nothing. . */ | |
734 | HOWTO (R_unused0, /* type. */ | |
735 | 0, /* rightshift. */ | |
736 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
737 | 32, /* bitsize. */ | |
738 | FALSE, /* pc_relative. */ | |
739 | 0, /* bitpos. */ | |
740 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
741 | bfd_elf_generic_reloc, /* special_function. */ | |
742 | "R_unused0", /* name. */ | |
743 | FALSE, /* partial_inplace. */ | |
744 | 0, /* src_mask. */ | |
745 | 0, /* dst_mask. */ | |
746 | FALSE), /* pcrel_offset. */ | |
747 | ||
748 | HOWTO (R_pcrel5m2, /* type. */ | |
749 | 1, /* rightshift. */ | |
750 | 1, /* size (0 = byte, 1 = short, 2 = long).. */ | |
751 | 4, /* bitsize. */ | |
752 | TRUE, /* pc_relative. */ | |
753 | 0, /* bitpos. */ | |
754 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
755 | bfin_bfd_reloc, /* special_function. */ | |
756 | "R_pcrel5m2", /* name. */ | |
757 | FALSE, /* partial_inplace. */ | |
f4707595 | 758 | 0, /* src_mask. */ |
0f64bb02 CM |
759 | 0x0000000F, /* dst_mask. */ |
760 | FALSE), /* pcrel_offset. */ | |
761 | ||
762 | HOWTO (R_unused1, /* type. */ | |
763 | 0, /* rightshift. */ | |
764 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
765 | 32, /* bitsize. */ | |
766 | FALSE, /* pc_relative. */ | |
767 | 0, /* bitpos. */ | |
768 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
769 | bfd_elf_generic_reloc, /* special_function. */ | |
770 | "R_unused1", /* name. */ | |
771 | FALSE, /* partial_inplace. */ | |
772 | 0, /* src_mask. */ | |
773 | 0, /* dst_mask. */ | |
774 | FALSE), /* pcrel_offset. */ | |
775 | ||
776 | HOWTO (R_pcrel10, /* type. */ | |
777 | 1, /* rightshift. */ | |
778 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
779 | 10, /* bitsize. */ | |
780 | TRUE, /* pc_relative. */ | |
781 | 0, /* bitpos. */ | |
782 | complain_overflow_signed, /* complain_on_overflow. */ | |
783 | bfin_bfd_reloc, /* special_function. */ | |
784 | "R_pcrel10", /* name. */ | |
785 | FALSE, /* partial_inplace. */ | |
f4707595 | 786 | 0, /* src_mask. */ |
0f64bb02 CM |
787 | 0x000003FF, /* dst_mask. */ |
788 | TRUE), /* pcrel_offset. */ | |
789 | ||
790 | HOWTO (R_pcrel12_jump, /* type. */ | |
791 | 1, /* rightshift. */ | |
792 | /* the offset is actually 13 bit | |
793 | aligned on a word boundary so | |
794 | only 12 bits have to be used. | |
795 | Right shift the rightmost bit.. */ | |
796 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
797 | 12, /* bitsize. */ | |
798 | TRUE, /* pc_relative. */ | |
799 | 0, /* bitpos. */ | |
800 | complain_overflow_signed, /* complain_on_overflow. */ | |
801 | bfin_bfd_reloc, /* special_function. */ | |
802 | "R_pcrel12_jump", /* name. */ | |
803 | FALSE, /* partial_inplace. */ | |
f4707595 | 804 | 0, /* src_mask. */ |
0f64bb02 CM |
805 | 0x0FFF, /* dst_mask. */ |
806 | TRUE), /* pcrel_offset. */ | |
807 | ||
808 | HOWTO (R_rimm16, /* type. */ | |
809 | 0, /* rightshift. */ | |
810 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
811 | 16, /* bitsize. */ | |
812 | FALSE, /* pc_relative. */ | |
813 | 0, /* bitpos. */ | |
814 | complain_overflow_signed, /* complain_on_overflow. */ | |
815 | bfin_imm16_reloc, /* special_function. */ | |
816 | "R_rimm16", /* name. */ | |
817 | FALSE, /* partial_inplace. */ | |
f4707595 | 818 | 0, /* src_mask. */ |
0f64bb02 CM |
819 | 0x0000FFFF, /* dst_mask. */ |
820 | TRUE), /* pcrel_offset. */ | |
821 | ||
822 | HOWTO (R_luimm16, /* type. */ | |
823 | 0, /* rightshift. */ | |
824 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
825 | 16, /* bitsize. */ | |
826 | FALSE, /* pc_relative. */ | |
827 | 0, /* bitpos. */ | |
828 | complain_overflow_dont, /* complain_on_overflow. */ | |
829 | bfin_imm16_reloc, /* special_function. */ | |
830 | "R_luimm16", /* name. */ | |
831 | FALSE, /* partial_inplace. */ | |
f4707595 | 832 | 0, /* src_mask. */ |
0f64bb02 CM |
833 | 0x0000FFFF, /* dst_mask. */ |
834 | TRUE), /* pcrel_offset. */ | |
835 | ||
836 | HOWTO (R_huimm16, /* type. */ | |
837 | 16, /* rightshift. */ | |
838 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
839 | 16, /* bitsize. */ | |
840 | FALSE, /* pc_relative. */ | |
841 | 0, /* bitpos. */ | |
842 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
843 | bfin_imm16_reloc, /* special_function. */ | |
844 | "R_huimm16", /* name. */ | |
845 | FALSE, /* partial_inplace. */ | |
f4707595 | 846 | 0, /* src_mask. */ |
0f64bb02 CM |
847 | 0x0000FFFF, /* dst_mask. */ |
848 | TRUE), /* pcrel_offset. */ | |
849 | ||
850 | HOWTO (R_pcrel12_jump_s, /* type. */ | |
851 | 1, /* rightshift. */ | |
852 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
853 | 12, /* bitsize. */ | |
854 | TRUE, /* pc_relative. */ | |
855 | 0, /* bitpos. */ | |
856 | complain_overflow_signed, /* complain_on_overflow. */ | |
857 | bfin_bfd_reloc, /* special_function. */ | |
858 | "R_pcrel12_jump_s", /* name. */ | |
859 | FALSE, /* partial_inplace. */ | |
f4707595 | 860 | 0, /* src_mask. */ |
0f64bb02 CM |
861 | 0x00000FFF, /* dst_mask. */ |
862 | TRUE), /* pcrel_offset. */ | |
863 | ||
864 | HOWTO (R_pcrel24_jump_x, /* type. */ | |
865 | 1, /* rightshift. */ | |
866 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
867 | 24, /* bitsize. */ | |
868 | TRUE, /* pc_relative. */ | |
869 | 0, /* bitpos. */ | |
870 | complain_overflow_signed, /* complain_on_overflow. */ | |
871 | bfin_pcrel24_reloc, /* special_function. */ | |
872 | "R_pcrel24_jump_x", /* name. */ | |
873 | FALSE, /* partial_inplace. */ | |
f4707595 | 874 | 0, /* src_mask. */ |
0f64bb02 CM |
875 | 0x00FFFFFF, /* dst_mask. */ |
876 | TRUE), /* pcrel_offset. */ | |
877 | ||
878 | HOWTO (R_pcrel24, /* type. */ | |
879 | 1, /* rightshift. */ | |
880 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
881 | 24, /* bitsize. */ | |
882 | TRUE, /* pc_relative. */ | |
883 | 0, /* bitpos. */ | |
884 | complain_overflow_signed, /* complain_on_overflow. */ | |
885 | bfin_pcrel24_reloc, /* special_function. */ | |
886 | "R_pcrel24", /* name. */ | |
887 | FALSE, /* partial_inplace. */ | |
f4707595 | 888 | 0, /* src_mask. */ |
0f64bb02 CM |
889 | 0x00FFFFFF, /* dst_mask. */ |
890 | TRUE), /* pcrel_offset. */ | |
891 | ||
892 | HOWTO (R_unusedb, /* type. */ | |
893 | 0, /* rightshift. */ | |
894 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
895 | 32, /* bitsize. */ | |
896 | FALSE, /* pc_relative. */ | |
897 | 0, /* bitpos. */ | |
898 | complain_overflow_dont, /* complain_on_overflow. */ | |
899 | bfd_elf_generic_reloc, /* special_function. */ | |
900 | "R_unusedb", /* name. */ | |
901 | FALSE, /* partial_inplace. */ | |
902 | 0, /* src_mask. */ | |
903 | 0, /* dst_mask. */ | |
904 | FALSE), /* pcrel_offset. */ | |
905 | ||
906 | HOWTO (R_unusedc, /* type. */ | |
907 | 0, /* rightshift. */ | |
908 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
909 | 32, /* bitsize. */ | |
910 | FALSE, /* pc_relative. */ | |
911 | 0, /* bitpos. */ | |
912 | complain_overflow_dont, /* complain_on_overflow. */ | |
913 | bfd_elf_generic_reloc, /* special_function. */ | |
914 | "R_unusedc", /* name. */ | |
915 | FALSE, /* partial_inplace. */ | |
916 | 0, /* src_mask. */ | |
917 | 0, /* dst_mask. */ | |
918 | FALSE), /* pcrel_offset. */ | |
919 | ||
920 | HOWTO (R_pcrel24_jump_l, /* type. */ | |
921 | 1, /* rightshift. */ | |
922 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
923 | 24, /* bitsize. */ | |
924 | TRUE, /* pc_relative. */ | |
925 | 0, /* bitpos. */ | |
926 | complain_overflow_signed, /* complain_on_overflow. */ | |
927 | bfin_pcrel24_reloc, /* special_function. */ | |
928 | "R_pcrel24_jump_l", /* name. */ | |
929 | FALSE, /* partial_inplace. */ | |
f4707595 | 930 | 0, /* src_mask. */ |
0f64bb02 CM |
931 | 0x00FFFFFF, /* dst_mask. */ |
932 | TRUE), /* pcrel_offset. */ | |
933 | ||
934 | HOWTO (R_pcrel24_call_x, /* type. */ | |
935 | 1, /* rightshift. */ | |
936 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
937 | 24, /* bitsize. */ | |
938 | TRUE, /* pc_relative. */ | |
939 | 0, /* bitpos. */ | |
940 | complain_overflow_signed, /* complain_on_overflow. */ | |
941 | bfin_pcrel24_reloc, /* special_function. */ | |
942 | "R_pcrel24_call_x", /* name. */ | |
943 | FALSE, /* partial_inplace. */ | |
f4707595 | 944 | 0, /* src_mask. */ |
0f64bb02 CM |
945 | 0x00FFFFFF, /* dst_mask. */ |
946 | TRUE), /* pcrel_offset. */ | |
947 | ||
948 | HOWTO (R_var_eq_symb, /* type. */ | |
949 | 0, /* rightshift. */ | |
950 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
951 | 32, /* bitsize. */ | |
952 | FALSE, /* pc_relative. */ | |
953 | 0, /* bitpos. */ | |
954 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
955 | bfin_bfd_reloc, /* special_function. */ | |
956 | "R_var_eq_symb", /* name. */ | |
957 | FALSE, /* partial_inplace. */ | |
958 | 0, /* src_mask. */ | |
959 | 0, /* dst_mask. */ | |
960 | FALSE), /* pcrel_offset. */ | |
961 | ||
962 | HOWTO (R_byte_data, /* type. */ | |
963 | 0, /* rightshift. */ | |
964 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
965 | 8, /* bitsize. */ | |
966 | FALSE, /* pc_relative. */ | |
967 | 0, /* bitpos. */ | |
968 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
969 | bfin_bfd_reloc, /* special_function. */ | |
970 | "R_byte_data", /* name. */ | |
971 | FALSE, /* partial_inplace. */ | |
f4707595 | 972 | 0, /* src_mask. */ |
0f64bb02 CM |
973 | 0xFF, /* dst_mask. */ |
974 | TRUE), /* pcrel_offset. */ | |
975 | ||
976 | HOWTO (R_byte2_data, /* type. */ | |
977 | 0, /* rightshift. */ | |
978 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
979 | 16, /* bitsize. */ | |
980 | FALSE, /* pc_relative. */ | |
981 | 0, /* bitpos. */ | |
982 | complain_overflow_signed, /* complain_on_overflow. */ | |
983 | bfin_bfd_reloc, /* special_function. */ | |
984 | "R_byte2_data", /* name. */ | |
985 | FALSE, /* partial_inplace. */ | |
f4707595 | 986 | 0, /* src_mask. */ |
0f64bb02 CM |
987 | 0xFFFF, /* dst_mask. */ |
988 | TRUE), /* pcrel_offset. */ | |
989 | ||
990 | HOWTO (R_byte4_data, /* type. */ | |
991 | 0, /* rightshift. */ | |
992 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
993 | 32, /* bitsize. */ | |
994 | FALSE, /* pc_relative. */ | |
995 | 0, /* bitpos. */ | |
996 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
997 | bfin_byte4_reloc, /* special_function. */ | |
998 | "R_byte4_data", /* name. */ | |
999 | FALSE, /* partial_inplace. */ | |
f4707595 | 1000 | 0, /* src_mask. */ |
0f64bb02 CM |
1001 | 0xFFFFFFFF, /* dst_mask. */ |
1002 | TRUE), /* pcrel_offset. */ | |
1003 | ||
1004 | HOWTO (R_pcrel11, /* type. */ | |
1005 | 1, /* rightshift. */ | |
1006 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1007 | 10, /* bitsize. */ | |
1008 | TRUE, /* pc_relative. */ | |
1009 | 0, /* bitpos. */ | |
1010 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
1011 | bfin_bfd_reloc, /* special_function. */ | |
1012 | "R_pcrel11", /* name. */ | |
1013 | FALSE, /* partial_inplace. */ | |
f4707595 | 1014 | 0, /* src_mask. */ |
0f64bb02 CM |
1015 | 0x000003FF, /* dst_mask. */ |
1016 | FALSE), /* pcrel_offset. */ | |
1017 | }; | |
1018 | ||
1019 | static reloc_howto_type bfin_areloc_howto_table [] = | |
1020 | { | |
1021 | HOWTO (R_push, | |
1022 | 0, | |
1023 | 2, | |
1024 | 0, | |
1025 | FALSE, | |
1026 | 0, | |
1027 | complain_overflow_dont, | |
1028 | bfin_push_reloc, | |
1029 | "R_expst_push", | |
1030 | FALSE, | |
1031 | 0, | |
1032 | 0, | |
1033 | FALSE), | |
1034 | ||
1035 | HOWTO (R_const, | |
1036 | 0, | |
1037 | 2, | |
1038 | 0, | |
1039 | FALSE, | |
1040 | 0, | |
1041 | complain_overflow_dont, | |
1042 | bfin_const_reloc, | |
1043 | "R_expst_const", | |
1044 | FALSE, | |
1045 | 0, | |
1046 | 0, | |
1047 | FALSE), | |
1048 | ||
1049 | HOWTO (R_add, | |
1050 | 0, | |
1051 | 0, | |
1052 | 0, | |
1053 | FALSE, | |
1054 | 0, | |
1055 | complain_overflow_dont, | |
1056 | bfin_oper_reloc, | |
1057 | "R_expst_add", | |
1058 | FALSE, | |
1059 | 0, | |
1060 | 0, | |
1061 | FALSE), | |
1062 | ||
1063 | HOWTO (R_sub, | |
1064 | 0, | |
1065 | 0, | |
1066 | 0, | |
1067 | FALSE, | |
1068 | 0, | |
1069 | complain_overflow_dont, | |
1070 | bfin_oper_reloc, | |
1071 | "R_expst_sub", | |
1072 | FALSE, | |
1073 | 0, | |
1074 | 0, | |
1075 | FALSE), | |
1076 | ||
1077 | HOWTO (R_mult, | |
1078 | 0, | |
1079 | 0, | |
1080 | 0, | |
1081 | FALSE, | |
1082 | 0, | |
1083 | complain_overflow_dont, | |
1084 | bfin_oper_reloc, | |
1085 | "R_expst_mult", | |
1086 | FALSE, | |
1087 | 0, | |
1088 | 0, | |
1089 | FALSE), | |
1090 | ||
1091 | HOWTO (R_div, /* type. */ | |
1092 | 0, /* rightshift. */ | |
1093 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1094 | 0, /* bitsize. */ | |
1095 | FALSE, /* pc_relative. */ | |
1096 | 0, /* bitpos. */ | |
1097 | complain_overflow_dont, /* complain_on_overflow. */ | |
1098 | bfin_oper_reloc, /* special_function. */ | |
1099 | "R_expst_div", /* name. */ | |
1100 | FALSE, /* partial_inplace. */ | |
1101 | 0, /* src_mask. */ | |
1102 | 0, /* dst_mask. */ | |
1103 | FALSE), /* pcrel_offset. */ | |
1104 | ||
1105 | HOWTO (R_mod, /* type. */ | |
1106 | 0, /* rightshift. */ | |
1107 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1108 | 0, /* bitsize. */ | |
1109 | FALSE, /* pc_relative. */ | |
1110 | 0, /* bitpos. */ | |
1111 | complain_overflow_dont, /* complain_on_overflow. */ | |
1112 | bfin_oper_reloc, /* special_function. */ | |
1113 | "R_expst_mod", /* name. */ | |
1114 | FALSE, /* partial_inplace. */ | |
1115 | 0, /* src_mask. */ | |
1116 | 0, /* dst_mask. */ | |
1117 | FALSE), /* pcrel_offset. */ | |
1118 | ||
1119 | HOWTO (R_lshift, /* type. */ | |
1120 | 0, /* rightshift. */ | |
1121 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1122 | 0, /* bitsize. */ | |
1123 | FALSE, /* pc_relative. */ | |
1124 | 0, /* bitpos. */ | |
1125 | complain_overflow_dont, /* complain_on_overflow. */ | |
1126 | bfin_oper_reloc, /* special_function. */ | |
1127 | "R_expst_lshift", /* name. */ | |
1128 | FALSE, /* partial_inplace. */ | |
1129 | 0, /* src_mask. */ | |
1130 | 0, /* dst_mask. */ | |
1131 | FALSE), /* pcrel_offset. */ | |
1132 | ||
1133 | HOWTO (R_rshift, /* type. */ | |
1134 | 0, /* rightshift. */ | |
1135 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1136 | 0, /* bitsize. */ | |
1137 | FALSE, /* pc_relative. */ | |
1138 | 0, /* bitpos. */ | |
1139 | complain_overflow_dont, /* complain_on_overflow. */ | |
1140 | bfin_oper_reloc, /* special_function. */ | |
1141 | "R_expst_rshift", /* name. */ | |
1142 | FALSE, /* partial_inplace. */ | |
1143 | 0, /* src_mask. */ | |
1144 | 0, /* dst_mask. */ | |
1145 | FALSE), /* pcrel_offset. */ | |
1146 | ||
1147 | HOWTO (R_and, /* type. */ | |
1148 | 0, /* rightshift. */ | |
1149 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1150 | 0, /* bitsize. */ | |
1151 | FALSE, /* pc_relative. */ | |
1152 | 0, /* bitpos. */ | |
1153 | complain_overflow_dont, /* complain_on_overflow. */ | |
1154 | bfin_oper_reloc, /* special_function. */ | |
1155 | "R_expst_and", /* name. */ | |
1156 | FALSE, /* partial_inplace. */ | |
1157 | 0, /* src_mask. */ | |
1158 | 0, /* dst_mask. */ | |
1159 | FALSE), /* pcrel_offset. */ | |
1160 | ||
1161 | HOWTO (R_or, /* type. */ | |
1162 | 0, /* rightshift. */ | |
1163 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1164 | 0, /* bitsize. */ | |
1165 | FALSE, /* pc_relative. */ | |
1166 | 0, /* bitpos. */ | |
1167 | complain_overflow_dont, /* complain_on_overflow. */ | |
1168 | bfin_oper_reloc, /* special_function. */ | |
1169 | "R_expst_or", /* name. */ | |
1170 | FALSE, /* partial_inplace. */ | |
1171 | 0, /* src_mask. */ | |
1172 | 0, /* dst_mask. */ | |
1173 | FALSE), /* pcrel_offset. */ | |
1174 | ||
1175 | HOWTO (R_xor, /* type. */ | |
1176 | 0, /* rightshift. */ | |
1177 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1178 | 0, /* bitsize. */ | |
1179 | FALSE, /* pc_relative. */ | |
1180 | 0, /* bitpos. */ | |
1181 | complain_overflow_dont, /* complain_on_overflow. */ | |
1182 | bfin_oper_reloc, /* special_function. */ | |
1183 | "R_expst_xor", /* name. */ | |
1184 | FALSE, /* partial_inplace. */ | |
1185 | 0, /* src_mask. */ | |
1186 | 0, /* dst_mask. */ | |
1187 | FALSE), /* pcrel_offset. */ | |
1188 | ||
1189 | HOWTO (R_land, /* type. */ | |
1190 | 0, /* rightshift. */ | |
1191 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1192 | 0, /* bitsize. */ | |
1193 | FALSE, /* pc_relative. */ | |
1194 | 0, /* bitpos. */ | |
1195 | complain_overflow_dont, /* complain_on_overflow. */ | |
1196 | bfin_oper_reloc, /* special_function. */ | |
1197 | "R_expst_land", /* name. */ | |
1198 | FALSE, /* partial_inplace. */ | |
1199 | 0, /* src_mask. */ | |
1200 | 0, /* dst_mask. */ | |
1201 | FALSE), /* pcrel_offset. */ | |
1202 | ||
1203 | HOWTO (R_lor, /* type. */ | |
1204 | 0, /* rightshift. */ | |
1205 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1206 | 0, /* bitsize. */ | |
1207 | FALSE, /* pc_relative. */ | |
1208 | 0, /* bitpos. */ | |
1209 | complain_overflow_dont, /* complain_on_overflow. */ | |
1210 | bfin_oper_reloc, /* special_function. */ | |
1211 | "R_expst_lor", /* name. */ | |
1212 | FALSE, /* partial_inplace. */ | |
1213 | 0, /* src_mask. */ | |
1214 | 0, /* dst_mask. */ | |
1215 | FALSE), /* pcrel_offset. */ | |
1216 | ||
1217 | HOWTO (R_len, /* type. */ | |
1218 | 0, /* rightshift. */ | |
1219 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1220 | 0, /* bitsize. */ | |
1221 | FALSE, /* pc_relative. */ | |
1222 | 0, /* bitpos. */ | |
1223 | complain_overflow_dont, /* complain_on_overflow. */ | |
1224 | bfin_oper_reloc, /* special_function. */ | |
1225 | "R_expst_len", /* name. */ | |
1226 | FALSE, /* partial_inplace. */ | |
1227 | 0, /* src_mask. */ | |
1228 | 0, /* dst_mask. */ | |
1229 | FALSE), /* pcrel_offset. */ | |
1230 | ||
1231 | HOWTO (R_neg, /* type. */ | |
1232 | 0, /* rightshift. */ | |
1233 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1234 | 0, /* bitsize. */ | |
1235 | FALSE, /* pc_relative. */ | |
1236 | 0, /* bitpos. */ | |
1237 | complain_overflow_dont, /* complain_on_overflow. */ | |
1238 | bfin_oper_reloc, /* special_function. */ | |
1239 | "R_expst_neg", /* name. */ | |
1240 | FALSE, /* partial_inplace. */ | |
1241 | 0, /* src_mask. */ | |
1242 | 0, /* dst_mask. */ | |
1243 | FALSE), /* pcrel_offset. */ | |
1244 | ||
1245 | HOWTO (R_comp, /* type. */ | |
1246 | 0, /* rightshift. */ | |
1247 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1248 | 0, /* bitsize. */ | |
1249 | FALSE, /* pc_relative. */ | |
1250 | 0, /* bitpos. */ | |
1251 | complain_overflow_dont, /* complain_on_overflow. */ | |
1252 | bfin_oper_reloc, /* special_function. */ | |
1253 | "R_expst_comp", /* name. */ | |
1254 | FALSE, /* partial_inplace. */ | |
1255 | 0, /* src_mask. */ | |
1256 | 0, /* dst_mask. */ | |
1257 | FALSE), /* pcrel_offset. */ | |
1258 | ||
1259 | HOWTO (R_page, /* type. */ | |
1260 | 0, /* rightshift. */ | |
1261 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1262 | 0, /* bitsize. */ | |
1263 | FALSE, /* pc_relative. */ | |
1264 | 0, /* bitpos. */ | |
1265 | complain_overflow_dont, /* complain_on_overflow. */ | |
1266 | bfin_oper_reloc, /* special_function. */ | |
1267 | "R_expst_page", /* name. */ | |
1268 | FALSE, /* partial_inplace. */ | |
1269 | 0, /* src_mask. */ | |
1270 | 0, /* dst_mask. */ | |
1271 | FALSE), /* pcrel_offset. */ | |
1272 | ||
1273 | HOWTO (R_hwpage, /* type. */ | |
1274 | 0, /* rightshift. */ | |
1275 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1276 | 0, /* bitsize. */ | |
1277 | FALSE, /* pc_relative. */ | |
1278 | 0, /* bitpos. */ | |
1279 | complain_overflow_dont, /* complain_on_overflow. */ | |
1280 | bfin_oper_reloc, /* special_function. */ | |
1281 | "R_expst_hwpage", /* name. */ | |
1282 | FALSE, /* partial_inplace. */ | |
1283 | 0, /* src_mask. */ | |
1284 | 0, /* dst_mask. */ | |
1285 | FALSE), /* pcrel_offset. */ | |
1286 | ||
1287 | HOWTO (R_addr, /* type. */ | |
1288 | 0, /* rightshift. */ | |
1289 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
1290 | 0, /* bitsize. */ | |
1291 | FALSE, /* pc_relative. */ | |
1292 | 0, /* bitpos. */ | |
1293 | complain_overflow_dont, /* complain_on_overflow. */ | |
1294 | bfin_oper_reloc, /* special_function. */ | |
1295 | "R_expst_addr", /* name. */ | |
1296 | FALSE, /* partial_inplace. */ | |
1297 | 0, /* src_mask. */ | |
1298 | 0, /* dst_mask. */ | |
1299 | FALSE), /* pcrel_offset. */ | |
1300 | }; | |
1301 | ||
1302 | static reloc_howto_type bfin_gnuext_howto_table [] = | |
1303 | { | |
1304 | HOWTO (R_pltpc, /* type. */ | |
1305 | 0, /* rightshift. */ | |
1306 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1307 | 16, /* bitsize. */ | |
1308 | FALSE, /* pc_relative. */ | |
1309 | 0, /* bitpos. */ | |
1310 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
1311 | bfin_pltpc_reloc, /* special_function. */ | |
1312 | "R_pltpc", /* name. */ | |
1313 | FALSE, /* partial_inplace. */ | |
1314 | 0xffff, /* src_mask. */ | |
1315 | 0xffff, /* dst_mask. */ | |
1316 | FALSE), /* pcrel_offset. */ | |
1317 | ||
1318 | HOWTO (R_got, /* type. */ | |
1319 | 0, /* rightshift. */ | |
1320 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1321 | 16, /* bitsize. */ | |
1322 | FALSE, /* pc_relative. */ | |
1323 | 0, /* bitpos. */ | |
1324 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
1325 | bfd_elf_generic_reloc, /* special_function. */ | |
1326 | "R_got", /* name. */ | |
1327 | FALSE, /* partial_inplace. */ | |
1328 | 0x7fff, /* src_mask. */ | |
1329 | 0x7fff, /* dst_mask. */ | |
1330 | FALSE), /* pcrel_offset. */ | |
1331 | ||
1332 | /* GNU extension to record C++ vtable hierarchy. */ | |
1333 | HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */ | |
1334 | 0, /* rightshift. */ | |
1335 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
1336 | 0, /* bitsize. */ | |
1337 | FALSE, /* pc_relative. */ | |
1338 | 0, /* bitpos. */ | |
1339 | complain_overflow_dont, /* complain_on_overflow. */ | |
1340 | NULL, /* special_function. */ | |
1341 | "R_BFIN_GNU_VTINHERIT", /* name. */ | |
1342 | FALSE, /* partial_inplace. */ | |
1343 | 0, /* src_mask. */ | |
1344 | 0, /* dst_mask. */ | |
1345 | FALSE), /* pcrel_offset. */ | |
1346 | ||
1347 | /* GNU extension to record C++ vtable member usage. */ | |
1348 | HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ | |
1349 | 0, /* rightshift. */ | |
1350 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
1351 | 0, /* bitsize. */ | |
1352 | FALSE, /* pc_relative. */ | |
1353 | 0, /* bitpos. */ | |
1354 | complain_overflow_dont, /* complain_on_overflow. */ | |
1355 | _bfd_elf_rel_vtable_reloc_fn, /* special_function. */ | |
1356 | "R_BFIN_GNU_VTENTRY", /* name. */ | |
1357 | FALSE, /* partial_inplace. */ | |
1358 | 0, /* src_mask. */ | |
1359 | 0, /* dst_mask. */ | |
1360 | FALSE) /* pcrel_offset. */ | |
1361 | }; | |
1362 | ||
1363 | struct bfin_reloc_map | |
1364 | { | |
1365 | bfd_reloc_code_real_type bfd_reloc_val; | |
1366 | unsigned int bfin_reloc_val; | |
1367 | }; | |
1368 | ||
1369 | static const struct bfin_reloc_map bfin_reloc_map [] = | |
1370 | { | |
1371 | { BFD_RELOC_NONE, R_unused0 }, | |
1372 | { BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 }, | |
1373 | { BFD_RELOC_NONE, R_unused1 }, | |
1374 | { BFD_RELOC_BFIN_10_PCREL, R_pcrel10 }, | |
1375 | { BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump }, | |
1376 | { BFD_RELOC_BFIN_16_IMM, R_rimm16 }, | |
1377 | { BFD_RELOC_BFIN_16_LOW, R_luimm16 }, | |
1378 | { BFD_RELOC_BFIN_16_HIGH, R_huimm16 }, | |
1379 | { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s }, | |
1380 | { BFD_RELOC_24_PCREL, R_pcrel24 }, | |
1381 | { BFD_RELOC_24_PCREL, R_pcrel24 }, | |
1382 | { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l }, | |
1383 | { BFD_RELOC_NONE, R_unusedb }, | |
1384 | { BFD_RELOC_NONE, R_unusedc }, | |
1385 | { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x }, | |
1386 | { BFD_RELOC_8, R_byte_data }, | |
1387 | { BFD_RELOC_16, R_byte2_data }, | |
1388 | { BFD_RELOC_32, R_byte4_data }, | |
1389 | { BFD_RELOC_BFIN_11_PCREL, R_pcrel11 }, | |
1390 | { BFD_RELOC_BFIN_GOT, R_got }, | |
1391 | { BFD_RELOC_BFIN_PLTPC, R_pltpc }, | |
1392 | { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT }, | |
1393 | { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY }, | |
1394 | { BFD_ARELOC_BFIN_PUSH, R_push }, | |
1395 | { BFD_ARELOC_BFIN_CONST, R_const }, | |
1396 | { BFD_ARELOC_BFIN_ADD, R_add }, | |
1397 | { BFD_ARELOC_BFIN_SUB, R_sub }, | |
1398 | { BFD_ARELOC_BFIN_MULT, R_mult }, | |
1399 | { BFD_ARELOC_BFIN_DIV, R_div }, | |
1400 | { BFD_ARELOC_BFIN_MOD, R_mod }, | |
1401 | { BFD_ARELOC_BFIN_LSHIFT, R_lshift }, | |
1402 | { BFD_ARELOC_BFIN_RSHIFT, R_rshift }, | |
1403 | { BFD_ARELOC_BFIN_AND, R_and }, | |
1404 | { BFD_ARELOC_BFIN_OR, R_or }, | |
1405 | { BFD_ARELOC_BFIN_XOR, R_xor }, | |
1406 | { BFD_ARELOC_BFIN_LAND, R_land }, | |
1407 | { BFD_ARELOC_BFIN_LOR, R_lor }, | |
1408 | { BFD_ARELOC_BFIN_LEN, R_len }, | |
1409 | { BFD_ARELOC_BFIN_NEG, R_neg }, | |
1410 | { BFD_ARELOC_BFIN_COMP, R_comp }, | |
1411 | { BFD_ARELOC_BFIN_PAGE, R_page }, | |
1412 | { BFD_ARELOC_BFIN_HWPAGE, R_hwpage }, | |
1413 | { BFD_ARELOC_BFIN_ADDR, R_addr } | |
1414 | ||
1415 | }; | |
1416 | ||
1417 | ||
1418 | static void | |
1419 | bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1420 | arelent *cache_ptr, | |
1421 | Elf_Internal_Rela *dst) | |
1422 | { | |
1423 | unsigned int r_type; | |
1424 | ||
1425 | r_type = ELF32_R_TYPE (dst->r_info); | |
1426 | ||
1427 | if (r_type <= BFIN_RELOC_MAX) | |
1428 | cache_ptr->howto = &bfin_howto_table [r_type]; | |
1429 | ||
1430 | else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) | |
1431 | cache_ptr->howto = &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; | |
1432 | ||
1433 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) | |
1434 | cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1435 | ||
1436 | else | |
1437 | cache_ptr->howto = (reloc_howto_type *) NULL; | |
1438 | ||
1439 | } | |
1440 | /* Given a BFD reloc type, return the howto. */ | |
1441 | static reloc_howto_type * | |
1442 | bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1443 | bfd_reloc_code_real_type code) | |
1444 | { | |
1445 | unsigned int i; | |
1446 | unsigned int r_type = BFIN_RELOC_MIN; | |
1447 | ||
1448 | for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;) | |
1449 | if (bfin_reloc_map[i].bfd_reloc_val == code) | |
1450 | r_type = bfin_reloc_map[i].bfin_reloc_val; | |
1451 | ||
1452 | if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN) | |
1453 | return &bfin_howto_table [r_type]; | |
1454 | ||
1455 | else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) | |
1456 | return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; | |
1457 | ||
1458 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) | |
1459 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1460 | ||
1461 | return (reloc_howto_type *) NULL; | |
1462 | ||
1463 | } | |
1464 | /* Given a bfin relocation type, return the howto. */ | |
1465 | static reloc_howto_type * | |
1466 | bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1467 | unsigned int r_type) | |
1468 | { | |
1469 | if (r_type <= BFIN_RELOC_MAX) | |
1470 | return &bfin_howto_table [r_type]; | |
1471 | ||
1472 | else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) | |
1473 | return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; | |
1474 | ||
1475 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) | |
1476 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1477 | ||
1478 | return (reloc_howto_type *) NULL; | |
1479 | ||
1480 | } | |
1481 | ||
1482 | /* Return TRUE if the name is a local label. | |
1483 | bfin local labels begin with L$. */ | |
1484 | static bfd_boolean | |
1485 | bfin_is_local_label_name ( | |
1486 | bfd *abfd ATTRIBUTE_UNUSED, | |
1487 | const char *label) | |
1488 | { | |
1489 | if (label[0] == 'L' && label[1] == '$' ) | |
1490 | return TRUE; | |
1491 | ||
1492 | return _bfd_elf_is_local_label_name (abfd, label); | |
1493 | } | |
1494 | ||
1495 | ||
1496 | /* Look through the relocs for a section during the first phase, and | |
1497 | allocate space in the global offset table or procedure linkage | |
1498 | table. */ | |
1499 | ||
1500 | static bfd_boolean | |
1501 | bfin_check_relocs (bfd * abfd, | |
1502 | struct bfd_link_info *info, | |
1503 | asection *sec, | |
1504 | const Elf_Internal_Rela *relocs) | |
1505 | { | |
1506 | bfd *dynobj; | |
1507 | Elf_Internal_Shdr *symtab_hdr; | |
1508 | struct elf_link_hash_entry **sym_hashes; | |
1509 | bfd_signed_vma *local_got_refcounts; | |
1510 | const Elf_Internal_Rela *rel; | |
1511 | const Elf_Internal_Rela *rel_end; | |
1512 | asection *sgot; | |
1513 | asection *srelgot; | |
1514 | asection *sreloc; | |
1515 | if (info->relocatable) | |
1516 | return TRUE; | |
1517 | ||
1518 | dynobj = elf_hash_table (info)->dynobj; | |
1519 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1520 | sym_hashes = elf_sym_hashes (abfd); | |
1521 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1522 | ||
1523 | sgot = NULL; | |
1524 | srelgot = NULL; | |
1525 | sreloc = NULL; | |
1526 | ||
1527 | rel_end = relocs + sec->reloc_count; | |
1528 | for (rel = relocs; rel < rel_end; rel++) | |
1529 | { | |
1530 | unsigned long r_symndx; | |
1531 | struct elf_link_hash_entry *h; | |
1532 | ||
1533 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1534 | if (r_symndx < symtab_hdr->sh_info) | |
1535 | h = NULL; | |
1536 | else | |
1537 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1538 | ||
1539 | switch (ELF32_R_TYPE (rel->r_info)) | |
1540 | { | |
1541 | /* This relocation describes the C++ object vtable hierarchy. | |
1542 | Reconstruct it for later use during GC. */ | |
1543 | case R_BFIN_GNU_VTINHERIT: | |
1544 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1545 | return FALSE; | |
1546 | break; | |
1547 | ||
1548 | /* This relocation describes which C++ vtable entries | |
1549 | are actually used. Record for later use during GC. */ | |
1550 | case R_BFIN_GNU_VTENTRY: | |
1551 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1552 | return FALSE; | |
1553 | break; | |
1554 | ||
1555 | case R_got: | |
1556 | if (h != NULL | |
1557 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1558 | break; | |
1559 | /* Fall through. */ | |
1560 | ||
1561 | if (dynobj == NULL) | |
1562 | { | |
1563 | /* Create the .got section. */ | |
1564 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1565 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1566 | return FALSE; | |
1567 | } | |
1568 | ||
1569 | if (sgot == NULL) | |
1570 | { | |
1571 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1572 | BFD_ASSERT (sgot != NULL); | |
1573 | } | |
1574 | ||
1575 | if (srelgot == NULL && (h != NULL || info->shared)) | |
1576 | { | |
1577 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1578 | if (srelgot == NULL) | |
1579 | { | |
1580 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
1581 | if (srelgot == NULL | |
1582 | || !bfd_set_section_flags (dynobj, srelgot, | |
1583 | (SEC_ALLOC | |
1584 | | SEC_LOAD | |
1585 | | SEC_HAS_CONTENTS | |
1586 | | SEC_IN_MEMORY | |
1587 | | SEC_LINKER_CREATED | |
1588 | | SEC_READONLY)) | |
1589 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
1590 | return FALSE; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | if (h != NULL) | |
1595 | { | |
1596 | if (h->got.refcount == 0) | |
1597 | { | |
1598 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1599 | if (h->dynindx == -1 && !h->forced_local) | |
1600 | { | |
1601 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
1602 | return FALSE; | |
1603 | } | |
1604 | ||
1605 | /* Allocate space in the .got section. */ | |
1606 | sgot->size += 4; | |
1607 | /* Allocate relocation space. */ | |
1608 | srelgot->size += sizeof (Elf32_External_Rela); | |
1609 | } | |
1610 | h->got.refcount++; | |
1611 | } | |
1612 | else | |
1613 | { | |
1614 | /* This is a global offset table entry for a local symbol. */ | |
1615 | if (local_got_refcounts == NULL) | |
1616 | { | |
1617 | bfd_size_type size; | |
1618 | ||
1619 | size = symtab_hdr->sh_info; | |
1620 | size *= sizeof (bfd_signed_vma); | |
1621 | local_got_refcounts = ((bfd_signed_vma *) | |
1622 | bfd_zalloc (abfd, size)); | |
1623 | if (local_got_refcounts == NULL) | |
1624 | return FALSE; | |
1625 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1626 | } | |
1627 | if (local_got_refcounts[r_symndx] == 0) | |
1628 | { | |
1629 | sgot->size += 4; | |
1630 | if (info->shared) | |
1631 | { | |
1632 | /* If we are generating a shared object, we need to | |
1633 | output a R_68K_RELATIVE reloc so that the dynamic | |
1634 | linker can adjust this GOT entry. */ | |
1635 | srelgot->size += sizeof (Elf32_External_Rela); | |
1636 | } | |
1637 | } | |
1638 | local_got_refcounts[r_symndx]++; | |
1639 | } | |
1640 | break; | |
1641 | ||
1642 | default: | |
1643 | break; | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | return TRUE; | |
1648 | } | |
1649 | ||
1650 | static enum elf_reloc_type_class | |
1651 | elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela) | |
1652 | { | |
1653 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
1654 | { | |
1655 | default: | |
1656 | return reloc_class_normal; | |
1657 | } | |
1658 | } | |
f4707595 | 1659 | |
0f64bb02 CM |
1660 | static bfd_boolean |
1661 | bfin_relocate_section (bfd * output_bfd, | |
1662 | struct bfd_link_info *info, | |
1663 | bfd * input_bfd, | |
1664 | asection * input_section, | |
1665 | bfd_byte * contents, | |
1666 | Elf_Internal_Rela * relocs, | |
1667 | Elf_Internal_Sym * local_syms, | |
1668 | asection ** local_sections) | |
1669 | { | |
1670 | bfd *dynobj; | |
1671 | Elf_Internal_Shdr *symtab_hdr; | |
1672 | struct elf_link_hash_entry **sym_hashes; | |
1673 | bfd_vma *local_got_offsets; | |
1674 | asection *sgot; | |
1675 | asection *sreloc; | |
1676 | Elf_Internal_Rela *rel; | |
1677 | Elf_Internal_Rela *relend; | |
0f64bb02 CM |
1678 | int i = 0; |
1679 | ||
1680 | if (info->relocatable) | |
1681 | return TRUE; | |
1682 | ||
1683 | dynobj = elf_hash_table (info)->dynobj; | |
1684 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1685 | sym_hashes = elf_sym_hashes (input_bfd); | |
1686 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1687 | ||
1688 | sgot = NULL; | |
1689 | sreloc = NULL; | |
1690 | ||
1691 | rel = relocs; | |
1692 | relend = relocs + input_section->reloc_count; | |
1693 | for (; rel < relend; rel++, i++) | |
1694 | { | |
1695 | int r_type; | |
1696 | reloc_howto_type *howto; | |
1697 | unsigned long r_symndx; | |
1698 | struct elf_link_hash_entry *h; | |
1699 | Elf_Internal_Sym *sym; | |
1700 | asection *sec; | |
1701 | bfd_vma relocation = 0; | |
1702 | bfd_boolean unresolved_reloc; | |
1703 | bfd_reloc_status_type r; | |
f4707595 | 1704 | bfd_vma address; |
0f64bb02 CM |
1705 | |
1706 | r_type = ELF32_R_TYPE (rel->r_info); | |
1707 | if (r_type < 0 || r_type >= 243) | |
1708 | { | |
1709 | bfd_set_error (bfd_error_bad_value); | |
1710 | return FALSE; | |
1711 | } | |
1712 | ||
1713 | if (r_type == R_BFIN_GNU_VTENTRY | |
1714 | || r_type == R_BFIN_GNU_VTINHERIT) | |
1715 | continue; | |
1716 | ||
1717 | howto = bfin_reloc_type_lookup (input_bfd, r_type); | |
1718 | if (howto == NULL) | |
1719 | { | |
1720 | bfd_set_error (bfd_error_bad_value); | |
1721 | return FALSE; | |
1722 | } | |
1723 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1724 | ||
1725 | h = NULL; | |
1726 | sym = NULL; | |
1727 | sec = NULL; | |
1728 | unresolved_reloc = FALSE; | |
1729 | ||
1730 | if (r_symndx < symtab_hdr->sh_info) | |
1731 | { | |
1732 | sym = local_syms + r_symndx; | |
1733 | sec = local_sections[r_symndx]; | |
1734 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
0f64bb02 CM |
1735 | } |
1736 | else | |
1737 | { | |
1738 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1739 | ||
1740 | while (h->root.type == bfd_link_hash_indirect | |
1741 | || h->root.type == bfd_link_hash_warning) | |
1742 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1743 | ||
1744 | if (! | |
1745 | (!strcmp (h->root.root.string, ".__constant") | |
1746 | || !strcmp (h->root.root.string, ".__operator"))) | |
1747 | { | |
1748 | bfd_boolean warned; | |
1749 | h = NULL; | |
1750 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1751 | r_symndx, symtab_hdr, sym_hashes, | |
1752 | h, sec, relocation, | |
1753 | unresolved_reloc, warned); | |
1754 | ||
1755 | } | |
1756 | } | |
1757 | ||
f4707595 JZ |
1758 | address = rel->r_offset; |
1759 | /* First, get stack relocs out of the way. */ | |
1760 | switch (r_type) | |
1761 | { | |
1762 | case R_push: | |
1763 | reloc_stack_push (relocation + rel->r_addend); | |
1764 | r = bfd_reloc_ok; | |
1765 | goto done_reloc; | |
1766 | case R_const: | |
1767 | reloc_stack_push (rel->r_addend); | |
1768 | r = bfd_reloc_ok; | |
1769 | goto done_reloc; | |
1770 | case R_add: | |
1771 | case R_sub: | |
1772 | case R_mult: | |
1773 | case R_div: | |
1774 | case R_mod: | |
1775 | case R_lshift: | |
1776 | case R_rshift: | |
1777 | case R_neg: | |
1778 | case R_and: | |
1779 | case R_or: | |
1780 | case R_xor: | |
1781 | case R_land: | |
1782 | case R_lor: | |
1783 | case R_comp: | |
1784 | case R_page: | |
1785 | case R_hwpage: | |
1786 | reloc_stack_operate (r_type); | |
1787 | r = bfd_reloc_ok; | |
1788 | goto done_reloc; | |
1789 | ||
1790 | default: | |
1791 | if (!is_reloc_stack_empty()) | |
1792 | relocation = reloc_stack_pop (); | |
1793 | break; | |
1794 | } | |
1795 | ||
1796 | /* Then, process normally. */ | |
0f64bb02 CM |
1797 | switch (r_type) |
1798 | { | |
1799 | case R_BFIN_GNU_VTINHERIT: | |
1800 | case R_BFIN_GNU_VTENTRY: | |
1801 | return bfd_reloc_ok; | |
1802 | ||
1803 | case R_got: | |
1804 | /* Relocation is to the address of the entry for this symbol | |
1805 | in the global offset table. */ | |
1806 | if (h != NULL | |
1807 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
f4707595 | 1808 | goto do_default; |
0f64bb02 CM |
1809 | /* Fall through. */ |
1810 | /* Relocation is the offset of the entry for this symbol in | |
1811 | the global offset table. */ | |
1812 | ||
1813 | { | |
1814 | bfd_vma off; | |
1815 | ||
1816 | if (sgot == NULL) | |
1817 | { | |
1818 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1819 | BFD_ASSERT (sgot != NULL); | |
1820 | } | |
1821 | ||
1822 | if (h != NULL) | |
1823 | { | |
1824 | bfd_boolean dyn; | |
1825 | ||
1826 | off = h->got.offset; | |
1827 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0f64bb02 | 1828 | dyn = elf_hash_table (info)->dynamic_sections_created; |
f4707595 | 1829 | |
0f64bb02 CM |
1830 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
1831 | || (info->shared | |
1832 | && (info->symbolic | |
1833 | || h->dynindx == -1 | |
f4707595 JZ |
1834 | || h->forced_local) |
1835 | && h->def_regular)) | |
0f64bb02 CM |
1836 | { |
1837 | /* This is actually a static link, or it is a | |
1838 | -Bsymbolic link and the symbol is defined | |
1839 | locally, or the symbol was forced to be local | |
1840 | because of a version file.. We must initialize | |
1841 | this entry in the global offset table. Since | |
1842 | the offset must always be a multiple of 4, we | |
1843 | use the least significant bit to record whether | |
1844 | we have initialized it already. | |
1845 | ||
1846 | When doing a dynamic link, we create a .rela.got | |
1847 | relocation entry to initialize the value. This | |
1848 | is done in the finish_dynamic_symbol routine. */ | |
1849 | if ((off & 1) != 0) | |
1850 | off &= ~1; | |
1851 | else | |
1852 | { | |
1853 | bfd_put_32 (output_bfd, relocation, | |
1854 | sgot->contents + off); | |
1855 | h->got.offset |= 1; | |
1856 | } | |
1857 | } | |
1858 | else | |
1859 | unresolved_reloc = FALSE; | |
1860 | } | |
1861 | else | |
1862 | { | |
f4707595 | 1863 | BFD_ASSERT (local_got_offsets != NULL); |
0f64bb02 | 1864 | off = local_got_offsets[r_symndx]; |
f4707595 | 1865 | BFD_ASSERT (off != (bfd_vma) - 1); |
0f64bb02 CM |
1866 | |
1867 | /* The offset must always be a multiple of 4. We use | |
1868 | the least significant bit to record whether we have | |
1869 | already generated the necessary reloc. */ | |
1870 | if ((off & 1) != 0) | |
1871 | off &= ~1; | |
1872 | else | |
1873 | { | |
0f64bb02 CM |
1874 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
1875 | ||
1876 | if (info->shared) | |
1877 | { | |
1878 | asection *s; | |
1879 | Elf_Internal_Rela outrel; | |
1880 | bfd_byte *loc; | |
1881 | ||
1882 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1883 | BFD_ASSERT (s != NULL); | |
1884 | ||
1885 | outrel.r_offset = (sgot->output_section->vma | |
1886 | + sgot->output_offset + off); | |
1887 | outrel.r_info = | |
1888 | ELF32_R_INFO (0, R_pcrel24); | |
1889 | outrel.r_addend = relocation; | |
1890 | loc = s->contents; | |
1891 | loc += | |
1892 | s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1893 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1894 | } | |
1895 | ||
1896 | local_got_offsets[r_symndx] |= 1; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | relocation = sgot->output_offset + off; | |
1901 | rel->r_addend = 0; | |
1902 | /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ | |
1903 | relocation /= 4; | |
1904 | } | |
f4707595 JZ |
1905 | goto do_default; |
1906 | ||
1907 | case R_pcrel24: | |
1908 | case R_pcrel24_jump_l: | |
1909 | { | |
1910 | bfd_vma x; | |
1911 | ||
1912 | relocation += rel->r_addend; | |
1913 | ||
1914 | /* Perform usual pc-relative correction. */ | |
1915 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
1916 | relocation -= address; | |
1917 | ||
1918 | /* We are getting reloc_entry->address 2 byte off from | |
1919 | the start of instruction. Assuming absolute postion | |
1920 | of the reloc data. But, following code had been written assuming | |
1921 | reloc address is starting at begining of instruction. | |
1922 | To compensate that I have increased the value of | |
1923 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
1924 | ||
1925 | relocation += 2; | |
1926 | address -= 2; | |
1927 | ||
1928 | relocation >>= 1; | |
1929 | ||
1930 | x = bfd_get_16 (input_bfd, contents + address); | |
1931 | x = (x & 0xff00) | ((relocation >> 16) & 0xff); | |
1932 | bfd_put_16 (input_bfd, x, contents + address); | |
1933 | ||
1934 | x = bfd_get_16 (input_bfd, contents + address + 2); | |
1935 | x = relocation & 0xFFFF; | |
1936 | bfd_put_16 (input_bfd, x, contents + address + 2); | |
1937 | r = bfd_reloc_ok; | |
1938 | } | |
0f64bb02 CM |
1939 | break; |
1940 | ||
1941 | default: | |
f4707595 JZ |
1942 | do_default: |
1943 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1944 | contents, address, | |
1945 | relocation, rel->r_addend); | |
1946 | ||
0f64bb02 CM |
1947 | break; |
1948 | } | |
1949 | ||
f4707595 | 1950 | done_reloc: |
0f64bb02 CM |
1951 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1952 | because such sections are not SEC_ALLOC and thus ld.so will | |
1953 | not process them. */ | |
1954 | if (unresolved_reloc | |
1955 | && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic)) | |
1956 | { | |
1957 | (*_bfd_error_handler) | |
1958 | (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), | |
1959 | input_bfd, | |
1960 | input_section, (long) rel->r_offset, h->root.root.string); | |
1961 | return FALSE; | |
1962 | } | |
1963 | ||
0f64bb02 CM |
1964 | if (r != bfd_reloc_ok) |
1965 | { | |
1966 | const char *name; | |
1967 | ||
1968 | if (h != NULL) | |
1969 | name = h->root.root.string; | |
1970 | else | |
1971 | { | |
1972 | name = bfd_elf_string_from_elf_section (input_bfd, | |
1973 | symtab_hdr->sh_link, | |
1974 | sym->st_name); | |
1975 | if (name == NULL) | |
1976 | return FALSE; | |
1977 | if (*name == '\0') | |
1978 | name = bfd_section_name (input_bfd, sec); | |
1979 | } | |
1980 | ||
1981 | if (r == bfd_reloc_overflow) | |
1982 | { | |
1983 | if (!(info->callbacks->reloc_overflow | |
1984 | (info, (h ? &h->root : NULL), name, howto->name, | |
1985 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) | |
1986 | return FALSE; | |
1987 | } | |
1988 | else | |
1989 | { | |
1990 | (*_bfd_error_handler) | |
1991 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), | |
1992 | input_bfd, input_section, | |
1993 | (long) rel->r_offset, name, (int) r); | |
1994 | return FALSE; | |
1995 | } | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | return TRUE; | |
2000 | } | |
2001 | ||
2002 | static asection * | |
2003 | bfin_gc_mark_hook (asection * sec, | |
2004 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2005 | Elf_Internal_Rela * rel, | |
2006 | struct elf_link_hash_entry *h, | |
2007 | Elf_Internal_Sym * sym) | |
2008 | { | |
2009 | if (h != NULL) | |
2010 | { | |
2011 | switch (ELF32_R_TYPE (rel->r_info)) | |
2012 | { | |
2013 | ||
2014 | case R_BFIN_GNU_VTINHERIT: | |
2015 | case R_BFIN_GNU_VTENTRY: | |
2016 | break; | |
2017 | ||
2018 | default: | |
2019 | switch (h->root.type) | |
2020 | { | |
2021 | default: | |
2022 | break; | |
2023 | ||
2024 | case bfd_link_hash_defined: | |
2025 | case bfd_link_hash_defweak: | |
2026 | return h->root.u.def.section; | |
2027 | ||
2028 | case bfd_link_hash_common: | |
2029 | return h->root.u.c.p->section; | |
2030 | } | |
2031 | } | |
2032 | } | |
2033 | else | |
2034 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
2035 | ||
2036 | return NULL; | |
2037 | } | |
2038 | ||
2039 | ||
2040 | /* Update the got entry reference counts for the section being removed. */ | |
2041 | ||
2042 | static bfd_boolean | |
2043 | bfin_gc_sweep_hook (bfd * abfd, | |
2044 | struct bfd_link_info *info, | |
2045 | asection * sec, | |
2046 | const Elf_Internal_Rela * relocs) | |
2047 | { | |
2048 | Elf_Internal_Shdr *symtab_hdr; | |
2049 | struct elf_link_hash_entry **sym_hashes; | |
2050 | bfd_signed_vma *local_got_refcounts; | |
2051 | const Elf_Internal_Rela *rel, *relend; | |
2052 | bfd *dynobj; | |
2053 | asection *sgot; | |
2054 | asection *srelgot; | |
2055 | ||
2056 | dynobj = elf_hash_table (info)->dynobj; | |
2057 | if (dynobj == NULL) | |
2058 | return TRUE; | |
2059 | ||
2060 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2061 | sym_hashes = elf_sym_hashes (abfd); | |
2062 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2063 | ||
2064 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2065 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2066 | ||
2067 | relend = relocs + sec->reloc_count; | |
2068 | for (rel = relocs; rel < relend; rel++) | |
2069 | { | |
2070 | unsigned long r_symndx; | |
2071 | struct elf_link_hash_entry *h; | |
2072 | ||
2073 | switch (ELF32_R_TYPE (rel->r_info)) | |
2074 | { | |
2075 | case R_got: | |
2076 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2077 | if (r_symndx >= symtab_hdr->sh_info) | |
2078 | { | |
2079 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2080 | if (h->got.refcount > 0) | |
2081 | { | |
2082 | --h->got.refcount; | |
2083 | if (h->got.refcount == 0) | |
2084 | { | |
2085 | /* We don't need the .got entry any more. */ | |
2086 | sgot->size -= 4; | |
2087 | srelgot->size -= sizeof (Elf32_External_Rela); | |
2088 | } | |
2089 | } | |
2090 | } | |
2091 | else if (local_got_refcounts != NULL) | |
2092 | { | |
2093 | if (local_got_refcounts[r_symndx] > 0) | |
2094 | { | |
2095 | --local_got_refcounts[r_symndx]; | |
2096 | if (local_got_refcounts[r_symndx] == 0) | |
2097 | { | |
2098 | /* We don't need the .got entry any more. */ | |
2099 | sgot->size -= 4; | |
2100 | if (info->shared) | |
2101 | srelgot->size -= sizeof (Elf32_External_Rela); | |
2102 | } | |
2103 | } | |
2104 | } | |
2105 | break; | |
2106 | default: | |
2107 | break; | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | return TRUE; | |
2112 | } | |
2113 | ||
2114 | ||
2115 | /* Merge backend specific data from an object file to the output | |
2116 | object file when linking. */ | |
2117 | static bfd_boolean | |
2118 | elf32_bfin_merge_private_bfd_data (bfd * ibfd, bfd * obfd) | |
2119 | { | |
2120 | flagword out_flags; | |
2121 | flagword in_flags; | |
2122 | ||
2123 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2124 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2125 | return TRUE; | |
2126 | ||
2127 | in_flags = elf_elfheader (ibfd)->e_flags; | |
2128 | out_flags = elf_elfheader (obfd)->e_flags; | |
2129 | ||
2130 | if (!elf_flags_init (obfd)) | |
2131 | { | |
2132 | elf_flags_init (obfd) = TRUE; | |
2133 | elf_elfheader (obfd)->e_flags = in_flags; | |
2134 | } | |
2135 | ||
2136 | return TRUE; | |
2137 | } | |
2138 | ||
2139 | ||
2140 | static bfd_boolean | |
2141 | elf32_bfin_set_private_flags (bfd * abfd, flagword flags) | |
2142 | { | |
2143 | elf_elfheader (abfd)->e_flags = flags; | |
2144 | elf_flags_init (abfd) = TRUE; | |
2145 | return TRUE; | |
2146 | } | |
2147 | ||
2148 | ||
2149 | /* Display the flags field. */ | |
2150 | static bfd_boolean | |
2151 | elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr) | |
2152 | { | |
2153 | FILE *file = (FILE *) ptr; | |
2154 | ||
2155 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
2156 | ||
2157 | /* Print normal ELF private data. */ | |
2158 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
2159 | ||
2160 | /* Ignore init flag - it may not be set, despite the flags field | |
2161 | containing valid data. */ | |
2162 | ||
2163 | /* xgettext:c-format */ | |
2164 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
2165 | ||
2166 | fputc ('\n', file); | |
2167 | ||
2168 | return TRUE; | |
2169 | } | |
2170 | ||
2171 | /* bfin ELF linker hash entry. */ | |
2172 | ||
2173 | struct bfin_link_hash_entry | |
2174 | { | |
2175 | struct elf_link_hash_entry root; | |
2176 | ||
2177 | /* Number of PC relative relocs copied for this symbol. */ | |
2178 | struct bfin_pcrel_relocs_copied *pcrel_relocs_copied; | |
2179 | }; | |
2180 | ||
2181 | /* bfin ELF linker hash table. */ | |
2182 | ||
2183 | struct bfin_link_hash_table | |
2184 | { | |
2185 | struct elf_link_hash_table root; | |
2186 | ||
2187 | /* Small local sym to section mapping cache. */ | |
2188 | struct sym_sec_cache sym_sec; | |
2189 | }; | |
2190 | ||
2191 | #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent)) | |
2192 | ||
2193 | static struct bfd_hash_entry * | |
2194 | bfin_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2195 | struct bfd_hash_table *table, const char *string) | |
2196 | { | |
2197 | struct bfd_hash_entry *ret = entry; | |
2198 | ||
2199 | /* Allocate the structure if it has not already been allocated by a | |
2200 | subclass. */ | |
2201 | if (ret == NULL) | |
2202 | ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry)); | |
2203 | if (ret == NULL) | |
2204 | return ret; | |
2205 | ||
2206 | /* Call the allocation method of the superclass. */ | |
2207 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); | |
2208 | if (ret != NULL) | |
2209 | bfin_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
2210 | ||
2211 | return ret; | |
2212 | } | |
2213 | ||
2214 | /* Create an bfin ELF linker hash table. */ | |
2215 | ||
2216 | static struct bfd_link_hash_table * | |
2217 | bfin_link_hash_table_create (bfd * abfd) | |
2218 | { | |
2219 | struct bfin_link_hash_table *ret; | |
2220 | bfd_size_type amt = sizeof (struct bfin_link_hash_table); | |
2221 | ||
2222 | ret = (struct bfin_link_hash_table *) bfd_malloc (amt); | |
2223 | if (ret == (struct bfin_link_hash_table *) NULL) | |
2224 | return NULL; | |
2225 | ||
2226 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
2227 | bfin_link_hash_newfunc)) | |
2228 | { | |
2229 | free (ret); | |
2230 | return NULL; | |
2231 | } | |
2232 | ||
2233 | ret->sym_sec.abfd = NULL; | |
2234 | ||
2235 | return &ret->root.root; | |
2236 | } | |
2237 | ||
2238 | /* The size in bytes of an entry in the procedure linkage table. */ | |
2239 | ||
2240 | /* Finish up the dynamic sections. */ | |
2241 | ||
2242 | static bfd_boolean | |
2243 | bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
2244 | struct bfd_link_info *info) | |
2245 | { | |
2246 | bfd *dynobj; | |
2247 | asection *sdyn; | |
2248 | ||
2249 | dynobj = elf_hash_table (info)->dynobj; | |
2250 | ||
2251 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2252 | ||
2253 | if (elf_hash_table (info)->dynamic_sections_created) | |
2254 | { | |
2255 | Elf32_External_Dyn *dyncon, *dynconend; | |
2256 | ||
2257 | BFD_ASSERT (sdyn != NULL); | |
2258 | ||
2259 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
2260 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
2261 | for (; dyncon < dynconend; dyncon++) | |
2262 | { | |
2263 | Elf_Internal_Dyn dyn; | |
2264 | ||
2265 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2266 | ||
2267 | } | |
2268 | ||
2269 | } | |
2270 | return TRUE; | |
2271 | } | |
2272 | ||
2273 | /* Finish up dynamic symbol handling. We set the contents of various | |
2274 | dynamic sections here. */ | |
2275 | ||
2276 | static bfd_boolean | |
2277 | bfin_finish_dynamic_symbol (bfd * output_bfd, | |
2278 | struct bfd_link_info *info, | |
2279 | struct elf_link_hash_entry *h, | |
2280 | Elf_Internal_Sym * sym) | |
2281 | { | |
2282 | bfd *dynobj; | |
2283 | ||
2284 | dynobj = elf_hash_table (info)->dynobj; | |
2285 | ||
2286 | if (h->got.offset != (bfd_vma) - 1) | |
2287 | { | |
2288 | asection *sgot; | |
2289 | asection *srela; | |
2290 | Elf_Internal_Rela rela; | |
2291 | bfd_byte *loc; | |
2292 | ||
2293 | /* This symbol has an entry in the global offset table. | |
2294 | Set it up. */ | |
2295 | ||
2296 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2297 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2298 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2299 | ||
2300 | rela.r_offset = (sgot->output_section->vma | |
2301 | + sgot->output_offset | |
2302 | + (h->got.offset & ~(bfd_vma) 1)); | |
2303 | ||
2304 | /* If this is a -Bsymbolic link, and the symbol is defined | |
2305 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
2306 | the symbol was forced to be local because of a version file. | |
2307 | The entry in the global offset table will already have been | |
2308 | initialized in the relocate_section function. */ | |
2309 | if (info->shared | |
2310 | && (info->symbolic | |
2311 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
2312 | { | |
2313 | fprintf(stderr, "*** check this relocation %s\n", __FUNCTION__); | |
2314 | rela.r_info = ELF32_R_INFO (0, R_pcrel24); | |
2315 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
2316 | (sgot->contents | |
2317 | + | |
2318 | (h->got. | |
2319 | offset & ~(bfd_vma) 1))); | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
2324 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); | |
2325 | rela.r_info = ELF32_R_INFO (h->dynindx, R_got); | |
2326 | rela.r_addend = 0; | |
2327 | } | |
2328 | ||
2329 | loc = srela->contents; | |
2330 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2331 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
2332 | } | |
2333 | ||
2334 | if (h->needs_copy) | |
2335 | { | |
2336 | BFD_ASSERT (0); | |
2337 | } | |
2338 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2339 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2340 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2341 | sym->st_shndx = SHN_ABS; | |
2342 | ||
2343 | return TRUE; | |
2344 | } | |
2345 | ||
2346 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2347 | regular object. The current definition is in some section of the | |
2348 | dynamic object, but we're not including those sections. We have to | |
2349 | change the definition to something the rest of the link can | |
2350 | understand. */ | |
2351 | ||
2352 | static bfd_boolean | |
2353 | bfin_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2354 | struct elf_link_hash_entry *h) | |
2355 | { | |
2356 | bfd *dynobj; | |
2357 | asection *s; | |
2358 | unsigned int power_of_two; | |
2359 | ||
2360 | dynobj = elf_hash_table (info)->dynobj; | |
2361 | ||
2362 | /* Make sure we know what is going on here. */ | |
2363 | BFD_ASSERT (dynobj != NULL | |
2364 | && (h->needs_plt | |
2365 | || h->u.weakdef != NULL | |
2366 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); | |
2367 | ||
2368 | /* If this is a function, put it in the procedure linkage table. We | |
2369 | will fill in the contents of the procedure linkage table later, | |
2370 | when we know the address of the .got section. */ | |
2371 | if (h->type == STT_FUNC || h->needs_plt) | |
2372 | { | |
2373 | BFD_ASSERT(0); | |
2374 | } | |
2375 | ||
2376 | /* If this is a weak symbol, and there is a real definition, the | |
2377 | processor independent code will have arranged for us to see the | |
2378 | real definition first, and we can just use the same value. */ | |
2379 | if (h->u.weakdef != NULL) | |
2380 | { | |
2381 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
2382 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2383 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2384 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
2385 | return TRUE; | |
2386 | } | |
2387 | ||
2388 | /* This is a reference to a symbol defined by a dynamic object which | |
2389 | is not a function. */ | |
2390 | ||
2391 | /* If we are creating a shared library, we must presume that the | |
2392 | only references to the symbol are via the global offset table. | |
2393 | For such cases we need not do anything here; the relocations will | |
2394 | be handled correctly by relocate_section. */ | |
2395 | if (info->shared) | |
2396 | return TRUE; | |
2397 | ||
2398 | /* We must allocate the symbol in our .dynbss section, which will | |
2399 | become part of the .bss section of the executable. There will be | |
2400 | an entry for this symbol in the .dynsym section. The dynamic | |
2401 | object will contain position independent code, so all references | |
2402 | from the dynamic object to this symbol will go through the global | |
2403 | offset table. The dynamic linker will use the .dynsym entry to | |
2404 | determine the address it must put in the global offset table, so | |
2405 | both the dynamic object and the regular object will refer to the | |
2406 | same memory location for the variable. */ | |
2407 | ||
2408 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2409 | BFD_ASSERT (s != NULL); | |
2410 | ||
2411 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
2412 | copy the initial value out of the dynamic object and into the | |
2413 | runtime process image. We need to remember the offset into the | |
2414 | .rela.bss section we are going to use. */ | |
2415 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2416 | { | |
2417 | asection *srel; | |
2418 | ||
2419 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2420 | BFD_ASSERT (srel != NULL); | |
2421 | srel->size += sizeof (Elf32_External_Rela); | |
2422 | h->needs_copy = 1; | |
2423 | } | |
2424 | ||
2425 | /* We need to figure out the alignment required for this symbol. I | |
2426 | have no idea how ELF linkers handle this. */ | |
2427 | power_of_two = bfd_log2 (h->size); | |
2428 | if (power_of_two > 3) | |
2429 | power_of_two = 3; | |
2430 | ||
2431 | /* Apply the required alignment. */ | |
2432 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
2433 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
2434 | { | |
2435 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
2436 | return FALSE; | |
2437 | } | |
2438 | ||
2439 | /* Define the symbol as being at this point in the section. */ | |
2440 | h->root.u.def.section = s; | |
2441 | h->root.u.def.value = s->size; | |
2442 | ||
2443 | /* Increment the section size to make room for the symbol. */ | |
2444 | s->size += h->size; | |
2445 | ||
2446 | return TRUE; | |
2447 | } | |
2448 | ||
2449 | /* The bfin linker needs to keep track of the number of relocs that it | |
2450 | decides to copy in check_relocs for each symbol. This is so that it | |
2451 | can discard PC relative relocs if it doesn't need them when linking | |
2452 | with -Bsymbolic. We store the information in a field extending the | |
2453 | regular ELF linker hash table. */ | |
2454 | ||
2455 | /* This structure keeps track of the number of PC relative relocs we have | |
2456 | copied for a given symbol. */ | |
2457 | ||
2458 | struct bfin_pcrel_relocs_copied | |
2459 | { | |
2460 | /* Next section. */ | |
2461 | struct bfin_pcrel_relocs_copied *next; | |
2462 | /* A section in dynobj. */ | |
2463 | asection *section; | |
2464 | /* Number of relocs copied in this section. */ | |
2465 | bfd_size_type count; | |
2466 | }; | |
2467 | ||
2468 | /* This function is called via elf_link_hash_traverse if we are | |
2469 | creating a shared object. In the -Bsymbolic case it discards the | |
2470 | space allocated to copy PC relative relocs against symbols which | |
2471 | are defined in regular objects. For the normal shared case, it | |
2472 | discards space for pc-relative relocs that have become local due to | |
2473 | symbol visibility changes. We allocated space for them in the | |
2474 | check_relocs routine, but we won't fill them in in the | |
2475 | relocate_section routine. | |
2476 | ||
2477 | We also check whether any of the remaining relocations apply | |
2478 | against a readonly section, and set the DF_TEXTREL flag in this | |
2479 | case. */ | |
2480 | ||
2481 | static bfd_boolean | |
2482 | bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf) | |
2483 | { | |
2484 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2485 | struct bfin_pcrel_relocs_copied *s; | |
2486 | ||
2487 | if (h->root.type == bfd_link_hash_warning) | |
2488 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2489 | ||
2490 | if (!h->def_regular || (!info->symbolic && !h->forced_local)) | |
2491 | { | |
2492 | if ((info->flags & DF_TEXTREL) == 0) | |
2493 | { | |
2494 | /* Look for relocations against read-only sections. */ | |
2495 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
2496 | s != NULL; s = s->next) | |
2497 | if ((s->section->flags & SEC_READONLY) != 0) | |
2498 | { | |
2499 | info->flags |= DF_TEXTREL; | |
2500 | break; | |
2501 | } | |
2502 | } | |
2503 | ||
2504 | return TRUE; | |
2505 | } | |
2506 | ||
2507 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
2508 | s != NULL; s = s->next) | |
2509 | s->section->size -= s->count * sizeof (Elf32_External_Rela); | |
2510 | ||
2511 | return TRUE; | |
2512 | } | |
2513 | ||
2514 | /* Set the sizes of the dynamic sections. */ | |
2515 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
2516 | ||
2517 | static bfd_boolean | |
2518 | bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
2519 | struct bfd_link_info *info) | |
2520 | { | |
2521 | bfd *dynobj; | |
2522 | asection *s; | |
2523 | bfd_boolean relocs; | |
2524 | ||
2525 | dynobj = elf_hash_table (info)->dynobj; | |
2526 | BFD_ASSERT (dynobj != NULL); | |
2527 | ||
2528 | if (elf_hash_table (info)->dynamic_sections_created) | |
2529 | { | |
2530 | /* Set the contents of the .interp section to the interpreter. */ | |
2531 | if (info->executable) | |
2532 | { | |
2533 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2534 | BFD_ASSERT (s != NULL); | |
2535 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2536 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2537 | } | |
2538 | } | |
2539 | else | |
2540 | { | |
2541 | /* We may have created entries in the .rela.got section. | |
2542 | However, if we are not creating the dynamic sections, we will | |
2543 | not actually use these entries. Reset the size of .rela.got, | |
2544 | which will cause it to get stripped from the output file | |
2545 | below. */ | |
2546 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2547 | if (s != NULL) | |
2548 | s->size = 0; | |
2549 | } | |
2550 | ||
2551 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
2552 | PC relative relocs against symbols defined in a regular object. | |
2553 | For the normal shared case we discard the PC relative relocs | |
2554 | against symbols that have become local due to visibility changes. | |
2555 | We allocated space for them in the check_relocs routine, but we | |
2556 | will not fill them in in the relocate_section routine. */ | |
2557 | if (info->shared) | |
2558 | elf_link_hash_traverse (elf_hash_table (info), | |
2559 | bfin_discard_copies, (PTR) info); | |
2560 | ||
2561 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2562 | determined the sizes of the various dynamic sections. Allocate | |
2563 | memory for them. */ | |
2564 | relocs = FALSE; | |
2565 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2566 | { | |
2567 | const char *name; | |
2568 | bfd_boolean strip; | |
2569 | ||
2570 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2571 | continue; | |
2572 | ||
2573 | /* It's OK to base decisions on the section name, because none | |
2574 | of the dynobj section names depend upon the input files. */ | |
2575 | name = bfd_get_section_name (dynobj, s); | |
2576 | ||
2577 | strip = FALSE; | |
2578 | ||
2579 | if (strncmp (name, ".rela", 5) == 0) | |
2580 | { | |
2581 | if (s->size == 0) | |
2582 | { | |
2583 | /* If we don't need this section, strip it from the | |
2584 | output file. This is mostly to handle .rela.bss and | |
2585 | .rela.plt. We must create both sections in | |
2586 | create_dynamic_sections, because they must be created | |
2587 | before the linker maps input sections to output | |
2588 | sections. The linker does that before | |
2589 | adjust_dynamic_symbol is called, and it is that | |
2590 | function which decides whether anything needs to go | |
2591 | into these sections. */ | |
2592 | strip = TRUE; | |
2593 | } | |
2594 | else | |
2595 | { | |
2596 | relocs = TRUE; | |
2597 | ||
2598 | /* We use the reloc_count field as a counter if we need | |
2599 | to copy relocs into the output file. */ | |
2600 | s->reloc_count = 0; | |
2601 | } | |
2602 | } | |
2603 | else if (strncmp (name, ".got", 4) != 0) | |
2604 | { | |
2605 | /* It's not one of our sections, so don't allocate space. */ | |
2606 | continue; | |
2607 | } | |
2608 | ||
2609 | if (strip) | |
2610 | { | |
2611 | s->flags |= SEC_EXCLUDE; | |
2612 | continue; | |
2613 | } | |
2614 | ||
2615 | /* Allocate memory for the section contents. */ | |
2616 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. | |
2617 | Unused entries should be reclaimed before the section's contents | |
2618 | are written out, but at the moment this does not happen. Thus in | |
2619 | order to prevent writing out garbage, we initialise the section's | |
2620 | contents to zero. */ | |
2621 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
2622 | if (s->contents == NULL && s->size != 0) | |
2623 | return FALSE; | |
2624 | } | |
2625 | ||
2626 | if (elf_hash_table (info)->dynamic_sections_created) | |
2627 | { | |
2628 | /* Add some entries to the .dynamic section. We fill in the | |
2629 | values later, in bfin_finish_dynamic_sections, but we | |
2630 | must add the entries now so that we get the correct size for | |
2631 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2632 | dynamic linker and used by the debugger. */ | |
2633 | #define add_dynamic_entry(TAG, VAL) \ | |
2634 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
2635 | ||
2636 | if (!info->shared) | |
2637 | { | |
2638 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
2639 | return FALSE; | |
2640 | } | |
2641 | ||
2642 | ||
2643 | if (relocs) | |
2644 | { | |
2645 | if (!add_dynamic_entry (DT_RELA, 0) | |
2646 | || !add_dynamic_entry (DT_RELASZ, 0) | |
2647 | || !add_dynamic_entry (DT_RELAENT, | |
2648 | sizeof (Elf32_External_Rela))) | |
2649 | return FALSE; | |
2650 | } | |
2651 | ||
2652 | if ((info->flags & DF_TEXTREL) != 0) | |
2653 | { | |
2654 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
2655 | return FALSE; | |
2656 | } | |
2657 | } | |
2658 | #undef add_dynamic_entry | |
2659 | ||
2660 | return TRUE; | |
2661 | } | |
2662 | ||
2663 | /* Given a .data section and a .emreloc in-memory section, store | |
2664 | relocation information into the .emreloc section which can be | |
2665 | used at runtime to relocate the section. This is called by the | |
2666 | linker when the --embedded-relocs switch is used. This is called | |
2667 | after the add_symbols entry point has been called for all the | |
2668 | objects, and before the final_link entry point is called. */ | |
2669 | ||
2670 | bfd_boolean | |
2671 | bfd_bfin_elf32_create_embedded_relocs ( | |
2672 | bfd *abfd, | |
2673 | struct bfd_link_info *info, | |
2674 | asection *datasec, | |
2675 | asection *relsec, | |
2676 | char **errmsg) | |
2677 | { | |
2678 | Elf_Internal_Shdr *symtab_hdr; | |
2679 | Elf_Internal_Sym *isymbuf = NULL; | |
2680 | Elf_Internal_Rela *internal_relocs = NULL; | |
2681 | Elf_Internal_Rela *irel, *irelend; | |
2682 | bfd_byte *p; | |
2683 | bfd_size_type amt; | |
2684 | ||
2685 | BFD_ASSERT (! info->relocatable); | |
2686 | ||
2687 | *errmsg = NULL; | |
2688 | ||
2689 | if (datasec->reloc_count == 0) | |
2690 | return TRUE; | |
2691 | ||
2692 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2693 | ||
2694 | /* Get a copy of the native relocations. */ | |
2695 | internal_relocs = (_bfd_elf_link_read_relocs | |
2696 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
2697 | info->keep_memory)); | |
2698 | if (internal_relocs == NULL) | |
2699 | goto error_return; | |
2700 | ||
2701 | amt = (bfd_size_type) datasec->reloc_count * 12; | |
2702 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
2703 | if (relsec->contents == NULL) | |
2704 | goto error_return; | |
2705 | ||
2706 | p = relsec->contents; | |
2707 | ||
2708 | irelend = internal_relocs + datasec->reloc_count; | |
2709 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
2710 | { | |
2711 | asection *targetsec; | |
2712 | ||
2713 | /* We are going to write a four byte longword into the runtime | |
2714 | reloc section. The longword will be the address in the data | |
2715 | section which must be relocated. It is followed by the name | |
2716 | of the target section NUL-padded or truncated to 8 | |
2717 | characters. */ | |
2718 | ||
2719 | /* We can only relocate absolute longword relocs at run time. */ | |
2720 | if (ELF32_R_TYPE (irel->r_info) != (int) R_byte4_data) | |
2721 | { | |
2722 | *errmsg = _("unsupported reloc type"); | |
2723 | bfd_set_error (bfd_error_bad_value); | |
2724 | goto error_return; | |
2725 | } | |
2726 | ||
2727 | /* Get the target section referred to by the reloc. */ | |
2728 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2729 | { | |
2730 | /* A local symbol. */ | |
2731 | Elf_Internal_Sym *isym; | |
2732 | ||
2733 | /* Read this BFD's local symbols if we haven't done so already. */ | |
2734 | if (isymbuf == NULL) | |
2735 | { | |
2736 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2737 | if (isymbuf == NULL) | |
2738 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2739 | symtab_hdr->sh_info, 0, | |
2740 | NULL, NULL, NULL); | |
2741 | if (isymbuf == NULL) | |
2742 | goto error_return; | |
2743 | } | |
2744 | ||
2745 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
2746 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2747 | } | |
2748 | else | |
2749 | { | |
2750 | unsigned long indx; | |
2751 | struct elf_link_hash_entry *h; | |
2752 | ||
2753 | /* An external symbol. */ | |
2754 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2755 | h = elf_sym_hashes (abfd)[indx]; | |
2756 | BFD_ASSERT (h != NULL); | |
2757 | if (h->root.type == bfd_link_hash_defined | |
2758 | || h->root.type == bfd_link_hash_defweak) | |
2759 | targetsec = h->root.u.def.section; | |
2760 | else | |
2761 | targetsec = NULL; | |
2762 | } | |
2763 | ||
2764 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
2765 | memset (p + 4, 0, 8); | |
2766 | if (targetsec != NULL) | |
9ba4c445 | 2767 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0f64bb02 CM |
2768 | } |
2769 | ||
2770 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2771 | free (isymbuf); | |
2772 | if (internal_relocs != NULL | |
2773 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2774 | free (internal_relocs); | |
2775 | return TRUE; | |
2776 | ||
2777 | error_return: | |
2778 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2779 | free (isymbuf); | |
2780 | if (internal_relocs != NULL | |
2781 | && elf_section_data (datasec)->relocs != internal_relocs) | |
2782 | free (internal_relocs); | |
2783 | return FALSE; | |
2784 | } | |
2785 | ||
2786 | #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec | |
2787 | #define TARGET_LITTLE_NAME "elf32-bfin" | |
2788 | #define ELF_ARCH bfd_arch_bfin | |
2789 | #define ELF_MACHINE_CODE EM_BLACKFIN | |
2790 | #define ELF_MAXPAGESIZE 0x1000 | |
2791 | #define elf_symbol_leading_char '_' | |
2792 | ||
2793 | #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup | |
2794 | #define elf_info_to_howto bfin_info_to_howto | |
2795 | #define elf_info_to_howto_rel 0 | |
2796 | ||
2797 | #define bfd_elf32_bfd_is_local_label_name \ | |
2798 | bfin_is_local_label_name | |
2799 | #define bfin_hash_table(p) \ | |
2800 | ((struct bfin_link_hash_table *) (p)->hash) | |
2801 | ||
2802 | ||
2803 | ||
2804 | #define elf_backend_create_dynamic_sections \ | |
2805 | _bfd_elf_create_dynamic_sections | |
2806 | #define bfd_elf32_bfd_link_hash_table_create \ | |
2807 | bfin_link_hash_table_create | |
2808 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link | |
2809 | ||
2810 | #define elf_backend_check_relocs bfin_check_relocs | |
2811 | #define elf_backend_adjust_dynamic_symbol \ | |
2812 | bfin_adjust_dynamic_symbol | |
2813 | #define elf_backend_size_dynamic_sections \ | |
2814 | bfin_size_dynamic_sections | |
2815 | #define elf_backend_relocate_section bfin_relocate_section | |
2816 | #define elf_backend_finish_dynamic_symbol \ | |
2817 | bfin_finish_dynamic_symbol | |
2818 | #define elf_backend_finish_dynamic_sections \ | |
2819 | bfin_finish_dynamic_sections | |
2820 | #define elf_backend_gc_mark_hook bfin_gc_mark_hook | |
2821 | #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook | |
2822 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
2823 | elf32_bfin_merge_private_bfd_data | |
2824 | #define bfd_elf32_bfd_set_private_flags \ | |
2825 | elf32_bfin_set_private_flags | |
2826 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
2827 | elf32_bfin_print_private_bfd_data | |
2828 | #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class | |
2829 | #define elf_backend_can_gc_sections 1 | |
2830 | #define elf_backend_can_refcount 1 | |
2831 | #define elf_backend_want_got_plt 0 | |
2832 | #define elf_backend_plt_readonly 1 | |
2833 | #define elf_backend_want_plt_sym 0 | |
2834 | #define elf_backend_got_header_size 12 | |
2835 | #define elf_backend_rela_normal 1 | |
2836 | ||
2837 | ||
2838 | #include "elf32-target.h" |