Commit | Line | Data |
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252b5132 | 1 | /* write.c - emit .o file |
49309057 | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | /* This thing should be set up to do byteordering correctly. But... */ | |
23 | ||
24 | #include "as.h" | |
25 | #include "subsegs.h" | |
26 | #include "obstack.h" | |
27 | #include "output-file.h" | |
28 | ||
29 | /* This looks like a good idea. Let's try turning it on always, for now. */ | |
30 | #undef BFD_FAST_SECTION_FILL | |
31 | #define BFD_FAST_SECTION_FILL | |
32 | ||
33 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop | |
34 | instruction so that the disassembler does not choke on it. */ | |
35 | #ifndef NOP_OPCODE | |
36 | #define NOP_OPCODE 0x00 | |
37 | #endif | |
38 | ||
39 | #ifndef TC_ADJUST_RELOC_COUNT | |
40 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
41 | #endif | |
42 | ||
43 | #ifndef TC_FORCE_RELOCATION | |
44 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
45 | #endif | |
46 | ||
47 | #ifndef TC_FORCE_RELOCATION_SECTION | |
48 | #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) | |
49 | #endif | |
50 | ||
51 | #ifndef MD_PCREL_FROM_SECTION | |
52 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) | |
53 | #endif | |
54 | ||
55 | #ifndef WORKING_DOT_WORD | |
56 | extern CONST int md_short_jump_size; | |
57 | extern CONST int md_long_jump_size; | |
58 | #endif | |
59 | ||
60 | int symbol_table_frozen; | |
61 | void print_fixup PARAMS ((fixS *)); | |
62 | ||
63 | #ifdef BFD_ASSEMBLER | |
64 | static void renumber_sections PARAMS ((bfd *, asection *, PTR)); | |
65 | ||
66 | /* We generally attach relocs to frag chains. However, after we have | |
67 | chained these all together into a segment, any relocs we add after | |
68 | that must be attached to a segment. This will include relocs added | |
69 | in md_estimate_size_for_relax, for example. */ | |
70 | static int frags_chained = 0; | |
71 | #endif | |
72 | ||
73 | #ifndef BFD_ASSEMBLER | |
74 | ||
75 | #ifndef MANY_SEGMENTS | |
76 | struct frag *text_frag_root; | |
77 | struct frag *data_frag_root; | |
78 | struct frag *bss_frag_root; | |
79 | ||
80 | struct frag *text_last_frag; /* Last frag in segment. */ | |
81 | struct frag *data_last_frag; /* Last frag in segment. */ | |
82 | static struct frag *bss_last_frag; /* Last frag in segment. */ | |
83 | #endif | |
84 | ||
85 | #ifndef BFD | |
86 | static object_headers headers; | |
87 | #endif | |
88 | ||
89 | long string_byte_count; | |
90 | char *next_object_file_charP; /* Tracks object file bytes. */ | |
91 | ||
92 | #ifndef OBJ_VMS | |
93 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; | |
94 | #endif | |
95 | ||
96 | #endif /* BFD_ASSEMBLER */ | |
97 | ||
98 | static int n_fixups; | |
99 | ||
100 | #ifdef BFD_ASSEMBLER | |
101 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, | |
102 | symbolS *add, symbolS *sub, | |
103 | offsetT offset, int pcrel, | |
104 | bfd_reloc_code_real_type r_type)); | |
105 | #else | |
106 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, | |
107 | symbolS *add, symbolS *sub, | |
108 | offsetT offset, int pcrel, | |
109 | int r_type)); | |
110 | #endif | |
111 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) | |
112 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); | |
113 | #endif | |
114 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); | |
115 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) | |
116 | static fragS *chain_frchains_together_1 PARAMS ((segT, struct frchain *)); | |
117 | #endif | |
118 | #ifdef BFD_ASSEMBLER | |
119 | static void chain_frchains_together PARAMS ((bfd *, segT, PTR)); | |
120 | static void cvt_frag_to_fill PARAMS ((segT, fragS *)); | |
121 | static void relax_and_size_seg PARAMS ((bfd *, asection *, PTR)); | |
122 | static void adjust_reloc_syms PARAMS ((bfd *, asection *, PTR)); | |
123 | static void write_relocs PARAMS ((bfd *, asection *, PTR)); | |
124 | static void write_contents PARAMS ((bfd *, asection *, PTR)); | |
125 | static void set_symtab PARAMS ((void)); | |
126 | #endif | |
127 | #if defined (BFD_ASSEMBLER) || (! defined (BFD) && ! defined (OBJ_AOUT)) | |
128 | static void merge_data_into_text PARAMS ((void)); | |
129 | #endif | |
130 | #if ! defined (BFD_ASSEMBLER) && ! defined (BFD) | |
131 | static void cvt_frag_to_fill PARAMS ((object_headers *, segT, fragS *)); | |
132 | static void remove_subsegs PARAMS ((frchainS *, int, fragS **, fragS **)); | |
133 | static void relax_and_size_all_segments PARAMS ((void)); | |
134 | #endif | |
135 | ||
136 | /* | |
137 | * fix_new() | |
138 | * | |
139 | * Create a fixS in obstack 'notes'. | |
140 | */ | |
141 | static fixS * | |
142 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
143 | r_type) | |
144 | fragS *frag; /* Which frag? */ | |
145 | int where; /* Where in that frag? */ | |
146 | int size; /* 1, 2, or 4 usually. */ | |
147 | symbolS *add_symbol; /* X_add_symbol. */ | |
148 | symbolS *sub_symbol; /* X_op_symbol. */ | |
149 | offsetT offset; /* X_add_number. */ | |
150 | int pcrel; /* TRUE if PC-relative relocation. */ | |
151 | #ifdef BFD_ASSEMBLER | |
152 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
153 | #else | |
154 | int r_type; /* Relocation type */ | |
155 | #endif | |
156 | { | |
157 | fixS *fixP; | |
158 | ||
159 | n_fixups++; | |
160 | ||
161 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); | |
162 | ||
163 | fixP->fx_frag = frag; | |
164 | fixP->fx_where = where; | |
165 | fixP->fx_size = size; | |
166 | /* We've made fx_size a narrow field; check that it's wide enough. */ | |
167 | if (fixP->fx_size != size) | |
168 | { | |
169 | as_bad (_("field fx_size too small to hold %d"), size); | |
170 | abort (); | |
171 | } | |
172 | fixP->fx_addsy = add_symbol; | |
173 | fixP->fx_subsy = sub_symbol; | |
174 | fixP->fx_offset = offset; | |
175 | fixP->fx_pcrel = pcrel; | |
176 | fixP->fx_plt = 0; | |
177 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) | |
178 | fixP->fx_r_type = r_type; | |
179 | #endif | |
180 | fixP->fx_im_disp = 0; | |
181 | fixP->fx_pcrel_adjust = 0; | |
182 | fixP->fx_bit_fixP = 0; | |
183 | fixP->fx_addnumber = 0; | |
184 | fixP->fx_tcbit = 0; | |
185 | fixP->fx_done = 0; | |
186 | fixP->fx_no_overflow = 0; | |
187 | fixP->fx_signed = 0; | |
188 | ||
189 | #ifdef USING_CGEN | |
190 | fixP->fx_cgen.insn = NULL; | |
191 | fixP->fx_cgen.opinfo = 0; | |
192 | #endif | |
193 | ||
194 | #ifdef TC_FIX_TYPE | |
195 | TC_INIT_FIX_DATA(fixP); | |
196 | #endif | |
197 | ||
198 | as_where (&fixP->fx_file, &fixP->fx_line); | |
199 | ||
200 | /* Usually, we want relocs sorted numerically, but while | |
201 | comparing to older versions of gas that have relocs | |
202 | reverse sorted, it is convenient to have this compile | |
203 | time option. xoxorich. */ | |
204 | ||
205 | { | |
206 | ||
207 | #ifdef BFD_ASSEMBLER | |
208 | fixS **seg_fix_rootP = (frags_chained | |
209 | ? &seg_info (now_seg)->fix_root | |
210 | : &frchain_now->fix_root); | |
211 | fixS **seg_fix_tailP = (frags_chained | |
212 | ? &seg_info (now_seg)->fix_tail | |
213 | : &frchain_now->fix_tail); | |
214 | #endif | |
215 | ||
216 | #ifdef REVERSE_SORT_RELOCS | |
217 | ||
218 | fixP->fx_next = *seg_fix_rootP; | |
219 | *seg_fix_rootP = fixP; | |
220 | ||
221 | #else /* REVERSE_SORT_RELOCS */ | |
222 | ||
223 | fixP->fx_next = NULL; | |
224 | ||
225 | if (*seg_fix_tailP) | |
226 | (*seg_fix_tailP)->fx_next = fixP; | |
227 | else | |
228 | *seg_fix_rootP = fixP; | |
229 | *seg_fix_tailP = fixP; | |
230 | ||
231 | #endif /* REVERSE_SORT_RELOCS */ | |
232 | ||
233 | } | |
234 | ||
235 | return fixP; | |
236 | } | |
237 | ||
238 | /* Create a fixup relative to a symbol (plus a constant). */ | |
239 | ||
240 | fixS * | |
241 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
242 | fragS *frag; /* Which frag? */ | |
243 | int where; /* Where in that frag? */ | |
244 | int size; /* 1, 2, or 4 usually. */ | |
245 | symbolS *add_symbol; /* X_add_symbol. */ | |
246 | offsetT offset; /* X_add_number. */ | |
247 | int pcrel; /* TRUE if PC-relative relocation. */ | |
248 | #ifdef BFD_ASSEMBLER | |
249 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
250 | #else | |
251 | int r_type; /* Relocation type */ | |
252 | #endif | |
253 | { | |
254 | return fix_new_internal (frag, where, size, add_symbol, | |
255 | (symbolS *) NULL, offset, pcrel, r_type); | |
256 | } | |
257 | ||
258 | /* Create a fixup for an expression. Currently we only support fixups | |
259 | for difference expressions. That is itself more than most object | |
260 | file formats support anyhow. */ | |
261 | ||
262 | fixS * | |
263 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
264 | fragS *frag; /* Which frag? */ | |
265 | int where; /* Where in that frag? */ | |
266 | int size; /* 1, 2, or 4 usually. */ | |
267 | expressionS *exp; /* Expression. */ | |
268 | int pcrel; /* TRUE if PC-relative relocation. */ | |
269 | #ifdef BFD_ASSEMBLER | |
270 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
271 | #else | |
272 | int r_type; /* Relocation type */ | |
273 | #endif | |
274 | { | |
275 | symbolS *add = NULL; | |
276 | symbolS *sub = NULL; | |
277 | offsetT off = 0; | |
278 | ||
279 | switch (exp->X_op) | |
280 | { | |
281 | case O_absent: | |
282 | break; | |
283 | ||
284 | case O_add: | |
285 | /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if | |
286 | the difference expression cannot immediately be reduced. */ | |
287 | { | |
288 | symbolS *stmp = make_expr_symbol (exp); | |
289 | exp->X_op = O_symbol; | |
290 | exp->X_op_symbol = 0; | |
291 | exp->X_add_symbol = stmp; | |
292 | exp->X_add_number = 0; | |
293 | return fix_new_exp (frag, where, size, exp, pcrel, r_type); | |
294 | } | |
295 | ||
296 | case O_symbol_rva: | |
297 | add = exp->X_add_symbol; | |
298 | off = exp->X_add_number; | |
299 | ||
300 | #if defined(BFD_ASSEMBLER) | |
301 | r_type = BFD_RELOC_RVA; | |
302 | #else | |
303 | #if defined(TC_RVA_RELOC) | |
304 | r_type = TC_RVA_RELOC; | |
305 | #else | |
306 | as_fatal(_("rva not supported")); | |
307 | #endif | |
308 | #endif | |
309 | break; | |
310 | ||
311 | case O_uminus: | |
312 | sub = exp->X_add_symbol; | |
313 | off = exp->X_add_number; | |
314 | break; | |
315 | ||
316 | case O_subtract: | |
317 | sub = exp->X_op_symbol; | |
318 | /* Fall through. */ | |
319 | case O_symbol: | |
320 | add = exp->X_add_symbol; | |
321 | /* Fall through. */ | |
322 | case O_constant: | |
323 | off = exp->X_add_number; | |
324 | break; | |
325 | ||
326 | default: | |
327 | add = make_expr_symbol (exp); | |
328 | break; | |
329 | } | |
330 | ||
331 | return fix_new_internal (frag, where, size, add, sub, off, | |
332 | pcrel, r_type); | |
333 | } | |
334 | ||
335 | /* Append a string onto another string, bumping the pointer along. */ | |
336 | void | |
337 | append (charPP, fromP, length) | |
338 | char **charPP; | |
339 | char *fromP; | |
340 | unsigned long length; | |
341 | { | |
342 | /* Don't trust memcpy() of 0 chars. */ | |
343 | if (length == 0) | |
344 | return; | |
345 | ||
346 | memcpy (*charPP, fromP, length); | |
347 | *charPP += length; | |
348 | } | |
349 | ||
350 | #ifndef BFD_ASSEMBLER | |
351 | int section_alignment[SEG_MAXIMUM_ORDINAL]; | |
352 | #endif | |
353 | ||
354 | /* | |
355 | * This routine records the largest alignment seen for each segment. | |
356 | * If the beginning of the segment is aligned on the worst-case | |
357 | * boundary, all of the other alignments within it will work. At | |
358 | * least one object format really uses this info. | |
359 | */ | |
360 | void | |
361 | record_alignment (seg, align) | |
362 | /* Segment to which alignment pertains */ | |
363 | segT seg; | |
364 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
365 | boundary, etc.) */ | |
366 | int align; | |
367 | { | |
368 | if (seg == absolute_section) | |
369 | return; | |
370 | #ifdef BFD_ASSEMBLER | |
371 | if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg)) | |
372 | bfd_set_section_alignment (stdoutput, seg, align); | |
373 | #else | |
374 | if (align > section_alignment[(int) seg]) | |
375 | section_alignment[(int) seg] = align; | |
376 | #endif | |
377 | } | |
378 | ||
379 | #ifdef BFD_ASSEMBLER | |
380 | ||
381 | /* Reset the section indices after removing the gas created sections. */ | |
382 | ||
383 | static void | |
384 | renumber_sections (abfd, sec, countparg) | |
385 | bfd *abfd; | |
386 | asection *sec; | |
387 | PTR countparg; | |
388 | { | |
389 | int *countp = (int *) countparg; | |
390 | ||
391 | sec->index = *countp; | |
392 | ++*countp; | |
393 | } | |
394 | ||
395 | #endif /* defined (BFD_ASSEMBLER) */ | |
396 | ||
397 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) | |
398 | ||
399 | static fragS * | |
400 | chain_frchains_together_1 (section, frchp) | |
401 | segT section; | |
402 | struct frchain *frchp; | |
403 | { | |
404 | fragS dummy, *prev_frag = &dummy; | |
405 | #ifdef BFD_ASSEMBLER | |
406 | fixS fix_dummy, *prev_fix = &fix_dummy; | |
407 | #endif | |
408 | ||
409 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) | |
410 | { | |
411 | prev_frag->fr_next = frchp->frch_root; | |
412 | prev_frag = frchp->frch_last; | |
413 | assert (prev_frag->fr_type != 0); | |
414 | #ifdef BFD_ASSEMBLER | |
415 | if (frchp->fix_root != (fixS *) NULL) | |
416 | { | |
417 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
418 | seg_info (section)->fix_root = frchp->fix_root; | |
419 | prev_fix->fx_next = frchp->fix_root; | |
420 | seg_info (section)->fix_tail = frchp->fix_tail; | |
421 | prev_fix = frchp->fix_tail; | |
422 | } | |
423 | #endif | |
424 | } | |
425 | assert (prev_frag->fr_type != 0); | |
426 | prev_frag->fr_next = 0; | |
427 | return prev_frag; | |
428 | } | |
429 | ||
430 | #endif | |
431 | ||
432 | #ifdef BFD_ASSEMBLER | |
433 | ||
434 | static void | |
435 | chain_frchains_together (abfd, section, xxx) | |
436 | bfd *abfd; /* unused */ | |
437 | segT section; | |
438 | PTR xxx; /* unused */ | |
439 | { | |
440 | segment_info_type *info; | |
441 | ||
442 | /* BFD may have introduced its own sections without using | |
443 | subseg_new, so it is possible that seg_info is NULL. */ | |
444 | info = seg_info (section); | |
445 | if (info != (segment_info_type *) NULL) | |
446 | info->frchainP->frch_last | |
447 | = chain_frchains_together_1 (section, info->frchainP); | |
448 | ||
449 | /* Now that we've chained the frags together, we must add new fixups | |
450 | to the segment, not to the frag chain. */ | |
451 | frags_chained = 1; | |
452 | } | |
453 | ||
454 | #endif | |
455 | ||
456 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) | |
457 | ||
458 | static void | |
459 | remove_subsegs (head, seg, root, last) | |
460 | frchainS *head; | |
461 | int seg; | |
462 | fragS **root; | |
463 | fragS **last; | |
464 | { | |
465 | *root = head->frch_root; | |
466 | *last = chain_frchains_together_1 (seg, head); | |
467 | } | |
468 | ||
469 | #endif /* BFD */ | |
470 | ||
471 | #if defined (BFD_ASSEMBLER) || !defined (BFD) | |
472 | ||
473 | #ifdef BFD_ASSEMBLER | |
474 | static void | |
475 | cvt_frag_to_fill (sec, fragP) | |
476 | segT sec; | |
477 | fragS *fragP; | |
478 | #else | |
479 | static void | |
480 | cvt_frag_to_fill (headersP, sec, fragP) | |
481 | object_headers *headersP; | |
482 | segT sec; | |
483 | fragS *fragP; | |
484 | #endif | |
485 | { | |
486 | switch (fragP->fr_type) | |
487 | { | |
488 | case rs_align: | |
489 | case rs_align_code: | |
490 | case rs_org: | |
491 | case rs_space: | |
492 | #ifdef HANDLE_ALIGN | |
493 | HANDLE_ALIGN (fragP); | |
494 | #endif | |
495 | know (fragP->fr_next != NULL); | |
496 | fragP->fr_offset = (fragP->fr_next->fr_address | |
497 | - fragP->fr_address | |
498 | - fragP->fr_fix) / fragP->fr_var; | |
499 | if (fragP->fr_offset < 0) | |
500 | { | |
501 | as_bad (_("attempt to .org/.space backwards? (%ld)"), | |
502 | (long) fragP->fr_offset); | |
503 | } | |
504 | fragP->fr_type = rs_fill; | |
505 | break; | |
506 | ||
507 | case rs_fill: | |
508 | break; | |
509 | ||
510 | case rs_leb128: | |
511 | { | |
512 | valueT value = S_GET_VALUE (fragP->fr_symbol); | |
513 | int size; | |
514 | ||
515 | size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value, | |
516 | fragP->fr_subtype); | |
517 | ||
518 | fragP->fr_fix += size; | |
519 | fragP->fr_type = rs_fill; | |
520 | fragP->fr_var = 0; | |
521 | fragP->fr_offset = 0; | |
522 | fragP->fr_symbol = NULL; | |
523 | } | |
524 | break; | |
525 | ||
526 | case rs_cfa: | |
527 | eh_frame_convert_frag (fragP); | |
528 | break; | |
529 | ||
530 | case rs_machine_dependent: | |
531 | #ifdef BFD_ASSEMBLER | |
532 | md_convert_frag (stdoutput, sec, fragP); | |
533 | #else | |
534 | md_convert_frag (headersP, sec, fragP); | |
535 | #endif | |
536 | ||
537 | assert (fragP->fr_next == NULL | |
538 | || ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address) | |
539 | == fragP->fr_fix)); | |
540 | ||
541 | /* | |
542 | * After md_convert_frag, we make the frag into a ".space 0". | |
543 | * Md_convert_frag() should set up any fixSs and constants | |
544 | * required. | |
545 | */ | |
546 | frag_wane (fragP); | |
547 | break; | |
548 | ||
549 | #ifndef WORKING_DOT_WORD | |
550 | case rs_broken_word: | |
551 | { | |
552 | struct broken_word *lie; | |
553 | ||
554 | if (fragP->fr_subtype) | |
555 | { | |
556 | fragP->fr_fix += md_short_jump_size; | |
557 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
558 | lie && lie->dispfrag == fragP; | |
559 | lie = lie->next_broken_word) | |
560 | if (lie->added == 1) | |
561 | fragP->fr_fix += md_long_jump_size; | |
562 | } | |
563 | frag_wane (fragP); | |
564 | } | |
565 | break; | |
566 | #endif | |
567 | ||
568 | default: | |
569 | BAD_CASE (fragP->fr_type); | |
570 | break; | |
571 | } | |
572 | } | |
573 | ||
574 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ | |
575 | ||
576 | #ifdef BFD_ASSEMBLER | |
577 | static void | |
578 | relax_and_size_seg (abfd, sec, xxx) | |
579 | bfd *abfd; | |
580 | asection *sec; | |
581 | PTR xxx; | |
582 | { | |
583 | flagword flags; | |
584 | fragS *fragp; | |
585 | segment_info_type *seginfo; | |
586 | int x; | |
587 | valueT size, newsize; | |
588 | ||
589 | subseg_change (sec, 0); | |
590 | ||
591 | flags = bfd_get_section_flags (abfd, sec); | |
592 | ||
593 | seginfo = seg_info (sec); | |
594 | if (seginfo && seginfo->frchainP) | |
595 | { | |
596 | relax_segment (seginfo->frchainP->frch_root, sec); | |
597 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
598 | cvt_frag_to_fill (sec, fragp); | |
599 | for (fragp = seginfo->frchainP->frch_root; | |
600 | fragp->fr_next; | |
601 | fragp = fragp->fr_next) | |
602 | /* walk to last elt */; | |
603 | size = fragp->fr_address + fragp->fr_fix; | |
604 | } | |
605 | else | |
606 | size = 0; | |
607 | ||
608 | if (size > 0 && ! seginfo->bss) | |
609 | flags |= SEC_HAS_CONTENTS; | |
610 | ||
611 | /* @@ This is just an approximation. */ | |
612 | if (seginfo && seginfo->fix_root) | |
613 | flags |= SEC_RELOC; | |
614 | else | |
615 | flags &= ~SEC_RELOC; | |
616 | x = bfd_set_section_flags (abfd, sec, flags); | |
617 | assert (x == true); | |
618 | ||
619 | newsize = md_section_align (sec, size); | |
620 | x = bfd_set_section_size (abfd, sec, newsize); | |
621 | assert (x == true); | |
622 | ||
623 | /* If the size had to be rounded up, add some padding in the last | |
624 | non-empty frag. */ | |
625 | assert (newsize >= size); | |
626 | if (size != newsize) | |
627 | { | |
628 | fragS *last = seginfo->frchainP->frch_last; | |
629 | fragp = seginfo->frchainP->frch_root; | |
630 | while (fragp->fr_next != last) | |
631 | fragp = fragp->fr_next; | |
632 | last->fr_address = size; | |
633 | fragp->fr_offset += newsize - size; | |
634 | } | |
635 | ||
636 | #ifdef tc_frob_section | |
637 | tc_frob_section (sec); | |
638 | #endif | |
639 | #ifdef obj_frob_section | |
640 | obj_frob_section (sec); | |
641 | #endif | |
642 | } | |
643 | ||
644 | #ifdef DEBUG2 | |
645 | static void | |
646 | dump_section_relocs (abfd, sec, stream_) | |
647 | bfd *abfd; | |
648 | asection *sec; | |
649 | char *stream_; | |
650 | { | |
651 | FILE *stream = (FILE *) stream_; | |
652 | segment_info_type *seginfo = seg_info (sec); | |
653 | fixS *fixp = seginfo->fix_root; | |
654 | ||
655 | if (!fixp) | |
656 | return; | |
657 | ||
658 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
659 | while (fixp) | |
660 | { | |
661 | symbolS *s = fixp->fx_addsy; | |
662 | if (s) | |
663 | { | |
664 | fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), | |
665 | s->bsym->section->name); | |
666 | if (s->bsym->flags & BSF_SECTION_SYM) | |
667 | { | |
668 | fprintf (stream, " section sym"); | |
669 | if (S_GET_VALUE (s)) | |
670 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
671 | } | |
672 | else | |
673 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
674 | fprintf (stream, ")+%x\n", fixp->fx_offset); | |
675 | } | |
676 | else | |
677 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
678 | fixp = fixp->fx_next; | |
679 | } | |
680 | } | |
681 | #else | |
682 | #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0) | |
683 | #endif | |
684 | ||
685 | #ifndef EMIT_SECTION_SYMBOLS | |
686 | #define EMIT_SECTION_SYMBOLS 1 | |
687 | #endif | |
688 | ||
689 | static void | |
690 | adjust_reloc_syms (abfd, sec, xxx) | |
691 | bfd *abfd; | |
692 | asection *sec; | |
693 | PTR xxx; | |
694 | { | |
695 | segment_info_type *seginfo = seg_info (sec); | |
696 | fixS *fixp; | |
697 | ||
698 | if (seginfo == NULL) | |
699 | return; | |
700 | ||
701 | dump_section_relocs (abfd, sec, stderr); | |
702 | ||
703 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
704 | if (fixp->fx_done) | |
705 | /* ignore it */; | |
706 | else if (fixp->fx_addsy) | |
707 | { | |
708 | symbolS *sym; | |
709 | asection *symsec; | |
710 | ||
711 | #ifdef DEBUG5 | |
712 | fprintf (stderr, "\n\nadjusting fixup:\n"); | |
713 | print_fixup (fixp); | |
714 | #endif | |
715 | ||
716 | sym = fixp->fx_addsy; | |
717 | ||
718 | /* All symbols should have already been resolved at this | |
719 | point. It is possible to see unresolved expression | |
720 | symbols, though, since they are not in the regular symbol | |
721 | table. */ | |
49309057 | 722 | if (sym != NULL) |
252b5132 RH |
723 | resolve_symbol_value (sym, 1); |
724 | ||
49309057 | 725 | if (fixp->fx_subsy != NULL) |
252b5132 RH |
726 | resolve_symbol_value (fixp->fx_subsy, 1); |
727 | ||
728 | /* If this symbol is equated to an undefined symbol, convert | |
729 | the fixup to being against that symbol. */ | |
49309057 | 730 | if (sym != NULL && symbol_equated_p (sym) |
252b5132 RH |
731 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) |
732 | { | |
49309057 ILT |
733 | fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number; |
734 | sym = symbol_get_value_expression (sym)->X_add_symbol; | |
252b5132 RH |
735 | fixp->fx_addsy = sym; |
736 | } | |
737 | ||
49309057 | 738 | if (sym != NULL && symbol_mri_common_p (sym)) |
252b5132 RH |
739 | { |
740 | /* These symbols are handled specially in fixup_segment. */ | |
741 | goto done; | |
742 | } | |
743 | ||
744 | symsec = S_GET_SEGMENT (sym); | |
745 | ||
746 | if (symsec == NULL) | |
747 | abort (); | |
748 | ||
749 | if (bfd_is_abs_section (symsec)) | |
750 | { | |
751 | /* The fixup_segment routine will not use this symbol in a | |
752 | relocation unless TC_FORCE_RELOCATION returns 1. */ | |
753 | if (TC_FORCE_RELOCATION (fixp)) | |
754 | { | |
49309057 | 755 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
756 | #ifdef UNDEFINED_DIFFERENCE_OK |
757 | if (fixp->fx_subsy != NULL) | |
49309057 | 758 | symbol_mark_used_in_reloc (fixp->fx_subsy); |
252b5132 RH |
759 | #endif |
760 | } | |
761 | goto done; | |
762 | } | |
763 | ||
764 | /* If it's one of these sections, assume the symbol is | |
765 | definitely going to be output. The code in | |
766 | md_estimate_size_before_relax in tc-mips.c uses this test | |
767 | as well, so if you change this code you should look at that | |
768 | code. */ | |
769 | if (bfd_is_und_section (symsec) | |
770 | || bfd_is_com_section (symsec)) | |
771 | { | |
49309057 | 772 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
773 | #ifdef UNDEFINED_DIFFERENCE_OK |
774 | /* We have the difference of an undefined symbol and some | |
775 | other symbol. Make sure to mark the other symbol as used | |
776 | in a relocation so that it will always be output. */ | |
777 | if (fixp->fx_subsy) | |
49309057 | 778 | symbol_mark_used_in_reloc (fixp->fx_subsy); |
252b5132 RH |
779 | #endif |
780 | goto done; | |
781 | } | |
782 | ||
783 | /* Don't try to reduce relocs which refer to .linkonce | |
784 | sections. It can lead to confusion when a debugging | |
785 | section refers to a .linkonce section. I hope this will | |
786 | always be correct. */ | |
787 | if (symsec != sec) | |
788 | { | |
789 | boolean linkonce; | |
790 | ||
791 | linkonce = false; | |
792 | #ifdef BFD_ASSEMBLER | |
793 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
794 | != 0) | |
795 | linkonce = true; | |
796 | #endif | |
797 | #ifdef OBJ_ELF | |
798 | /* The GNU toolchain uses an extension for ELF: a section | |
799 | beginning with the magic string .gnu.linkonce is a | |
800 | linkonce section. */ | |
801 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
802 | sizeof ".gnu.linkonce" - 1) == 0) | |
803 | linkonce = true; | |
804 | #endif | |
805 | ||
806 | if (linkonce) | |
807 | { | |
49309057 | 808 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
809 | #ifdef UNDEFINED_DIFFERENCE_OK |
810 | if (fixp->fx_subsy != NULL) | |
49309057 | 811 | symbol_mark_used_in_reloc (fixp->fx_subsy); |
252b5132 RH |
812 | #endif |
813 | goto done; | |
814 | } | |
815 | } | |
816 | ||
817 | /* Since we're reducing to section symbols, don't attempt to reduce | |
818 | anything that's already using one. */ | |
49309057 | 819 | if (symbol_section_p (sym)) |
252b5132 | 820 | { |
49309057 | 821 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
822 | goto done; |
823 | } | |
824 | ||
825 | #ifdef BFD_ASSEMBLER | |
826 | /* We can never adjust a reloc against a weak symbol. If we | |
827 | did, and the weak symbol was overridden by a real symbol | |
828 | somewhere else, then our relocation would be pointing at | |
829 | the wrong area of memory. */ | |
830 | if (S_IS_WEAK (sym)) | |
831 | { | |
49309057 | 832 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
833 | goto done; |
834 | } | |
835 | #endif | |
836 | ||
837 | /* Is there some other reason we can't adjust this one? (E.g., | |
838 | call/bal links in i960-bout symbols.) */ | |
839 | #ifdef obj_fix_adjustable | |
840 | if (! obj_fix_adjustable (fixp)) | |
841 | { | |
49309057 | 842 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
843 | goto done; |
844 | } | |
845 | #endif | |
846 | ||
847 | /* Is there some other (target cpu dependent) reason we can't adjust | |
848 | this one? (E.g. relocations involving function addresses on | |
849 | the PA. */ | |
850 | #ifdef tc_fix_adjustable | |
851 | if (! tc_fix_adjustable (fixp)) | |
852 | { | |
49309057 | 853 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
854 | goto done; |
855 | } | |
856 | #endif | |
857 | ||
858 | /* If the section symbol isn't going to be output, the relocs | |
859 | at least should still work. If not, figure out what to do | |
860 | when we run into that case. | |
861 | ||
862 | We refetch the segment when calling section_symbol, rather | |
863 | than using symsec, because S_GET_VALUE may wind up changing | |
864 | the section when it calls resolve_symbol_value. */ | |
865 | fixp->fx_offset += S_GET_VALUE (sym); | |
866 | fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym)); | |
49309057 | 867 | symbol_mark_used_in_reloc (fixp->fx_addsy); |
252b5132 RH |
868 | |
869 | done: | |
870 | ; | |
871 | } | |
872 | #if 1/*def RELOC_REQUIRES_SYMBOL*/ | |
873 | else | |
874 | { | |
875 | /* There was no symbol required by this relocation. However, | |
876 | BFD doesn't really handle relocations without symbols well. | |
877 | (At least, the COFF support doesn't.) So for now we fake up | |
878 | a local symbol in the absolute section. */ | |
879 | ||
880 | fixp->fx_addsy = section_symbol (absolute_section); | |
881 | /* fixp->fx_addsy->sy_used_in_reloc = 1; */ | |
882 | } | |
883 | #endif | |
884 | ||
885 | dump_section_relocs (abfd, sec, stderr); | |
886 | } | |
887 | ||
888 | static void | |
889 | write_relocs (abfd, sec, xxx) | |
890 | bfd *abfd; | |
891 | asection *sec; | |
892 | PTR xxx; | |
893 | { | |
894 | segment_info_type *seginfo = seg_info (sec); | |
895 | int i; | |
896 | unsigned int n; | |
897 | arelent **relocs; | |
898 | fixS *fixp; | |
899 | char *err; | |
900 | ||
901 | /* If seginfo is NULL, we did not create this section; don't do | |
902 | anything with it. */ | |
903 | if (seginfo == NULL) | |
904 | return; | |
905 | ||
906 | fixup_segment (seginfo->fix_root, sec); | |
907 | ||
908 | n = 0; | |
909 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
910 | n++; | |
911 | ||
912 | #ifndef RELOC_EXPANSION_POSSIBLE | |
913 | /* Set up reloc information as well. */ | |
914 | relocs = (arelent **) xmalloc (n * sizeof (arelent *)); | |
915 | memset ((char*)relocs, 0, n * sizeof (arelent*)); | |
916 | ||
917 | i = 0; | |
918 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
919 | { | |
920 | arelent *reloc; | |
921 | bfd_reloc_status_type s; | |
922 | symbolS *sym; | |
923 | ||
924 | if (fixp->fx_done) | |
925 | { | |
926 | n--; | |
927 | continue; | |
928 | } | |
929 | ||
930 | /* If this is an undefined symbol which was equated to another | |
931 | symbol, then use generate the reloc against the latter symbol | |
932 | rather than the former. */ | |
933 | sym = fixp->fx_addsy; | |
49309057 | 934 | while (symbol_equated_p (sym) |
252b5132 RH |
935 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) |
936 | { | |
937 | symbolS *n; | |
938 | ||
939 | /* We must avoid looping, as that can occur with a badly | |
940 | written program. */ | |
49309057 | 941 | n = symbol_get_value_expression (sym)->X_add_symbol; |
252b5132 RH |
942 | if (n == sym) |
943 | break; | |
49309057 | 944 | fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number; |
252b5132 RH |
945 | sym = n; |
946 | } | |
947 | fixp->fx_addsy = sym; | |
948 | ||
949 | reloc = tc_gen_reloc (sec, fixp); | |
950 | if (!reloc) | |
951 | { | |
952 | n--; | |
953 | continue; | |
954 | } | |
955 | ||
956 | #if 0 | |
957 | /* This test is triggered inappropriately for the SH. */ | |
958 | if (fixp->fx_where + fixp->fx_size | |
959 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) | |
960 | abort (); | |
961 | #endif | |
962 | ||
963 | s = bfd_install_relocation (stdoutput, reloc, | |
964 | fixp->fx_frag->fr_literal, | |
965 | fixp->fx_frag->fr_address, | |
966 | sec, &err); | |
967 | switch (s) | |
968 | { | |
969 | case bfd_reloc_ok: | |
970 | break; | |
971 | case bfd_reloc_overflow: | |
972 | as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation overflow")); | |
973 | break; | |
974 | case bfd_reloc_outofrange: | |
975 | as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation out of range")); | |
976 | break; | |
977 | default: | |
978 | as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"), | |
979 | fixp->fx_file, fixp->fx_line, s); | |
980 | } | |
981 | relocs[i++] = reloc; | |
982 | } | |
983 | #else | |
984 | n = n * MAX_RELOC_EXPANSION; | |
985 | /* Set up reloc information as well. */ | |
986 | relocs = (arelent **) xmalloc (n * sizeof (arelent *)); | |
987 | ||
988 | i = 0; | |
989 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
990 | { | |
991 | arelent **reloc; | |
992 | char *data; | |
993 | bfd_reloc_status_type s; | |
994 | symbolS *sym; | |
995 | int j; | |
996 | ||
997 | if (fixp->fx_done) | |
998 | { | |
999 | n--; | |
1000 | continue; | |
1001 | } | |
1002 | ||
1003 | /* If this is an undefined symbol which was equated to another | |
1004 | symbol, then use generate the reloc against the latter symbol | |
1005 | rather than the former. */ | |
1006 | sym = fixp->fx_addsy; | |
49309057 | 1007 | while (symbol_equated_p (sym) |
252b5132 | 1008 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) |
49309057 | 1009 | sym = symbol_get_value_expression (sym)->X_add_symbol; |
252b5132 RH |
1010 | fixp->fx_addsy = sym; |
1011 | ||
1012 | reloc = tc_gen_reloc (sec, fixp); | |
1013 | ||
1014 | for (j = 0; reloc[j]; j++) | |
1015 | { | |
1016 | relocs[i++] = reloc[j]; | |
1017 | assert(i <= n); | |
1018 | } | |
1019 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
1020 | if (fixp->fx_where + fixp->fx_size | |
1021 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) | |
1022 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1023 | _("internal error: fixup not contained within frag")); | |
1024 | for (j = 0; reloc[j]; j++) | |
1025 | { | |
1026 | s = bfd_install_relocation (stdoutput, reloc[j], | |
1027 | fixp->fx_frag->fr_literal, | |
1028 | fixp->fx_frag->fr_address, | |
1029 | sec, &err); | |
1030 | switch (s) | |
1031 | { | |
1032 | case bfd_reloc_ok: | |
1033 | break; | |
1034 | case bfd_reloc_overflow: | |
1035 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1036 | _("relocation overflow")); | |
1037 | break; | |
1038 | default: | |
1039 | as_fatal (_("%s:%u: bad return from bfd_install_relocation"), | |
1040 | fixp->fx_file, fixp->fx_line); | |
1041 | } | |
1042 | } | |
1043 | } | |
1044 | n = i; | |
1045 | #endif | |
1046 | ||
1047 | #ifdef DEBUG4 | |
1048 | { | |
1049 | int i, j, nsyms; | |
1050 | asymbol **sympp; | |
1051 | sympp = bfd_get_outsymbols (stdoutput); | |
1052 | nsyms = bfd_get_symcount (stdoutput); | |
1053 | for (i = 0; i < n; i++) | |
1054 | if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) | |
1055 | { | |
1056 | for (j = 0; j < nsyms; j++) | |
1057 | if (sympp[j] == *relocs[i]->sym_ptr_ptr) | |
1058 | break; | |
1059 | if (j == nsyms) | |
1060 | abort (); | |
1061 | } | |
1062 | } | |
1063 | #endif | |
1064 | ||
1065 | if (n) | |
1066 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
1067 | else | |
1068 | bfd_set_section_flags (abfd, sec, | |
1069 | (bfd_get_section_flags (abfd, sec) | |
1070 | & (flagword) ~SEC_RELOC)); | |
1071 | ||
1072 | #ifdef DEBUG3 | |
1073 | { | |
1074 | int i; | |
1075 | arelent *r; | |
1076 | asymbol *s; | |
1077 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
1078 | for (i = 0; i < n; i++) | |
1079 | { | |
1080 | r = relocs[i]; | |
1081 | s = *r->sym_ptr_ptr; | |
1082 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
1083 | i, r, r->address, s->name, r->addend); | |
1084 | } | |
1085 | } | |
1086 | #endif | |
1087 | } | |
1088 | ||
1089 | static void | |
1090 | write_contents (abfd, sec, xxx) | |
1091 | bfd *abfd; | |
1092 | asection *sec; | |
1093 | PTR xxx; | |
1094 | { | |
1095 | segment_info_type *seginfo = seg_info (sec); | |
1096 | unsigned long offset = 0; | |
1097 | fragS *f; | |
1098 | ||
1099 | /* Write out the frags. */ | |
1100 | if (seginfo == NULL | |
1101 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
1102 | return; | |
1103 | ||
1104 | for (f = seginfo->frchainP->frch_root; | |
1105 | f; | |
1106 | f = f->fr_next) | |
1107 | { | |
1108 | int x; | |
1109 | unsigned long fill_size; | |
1110 | char *fill_literal; | |
1111 | long count; | |
1112 | ||
1113 | assert (f->fr_type == rs_fill); | |
1114 | if (f->fr_fix) | |
1115 | { | |
1116 | x = bfd_set_section_contents (stdoutput, sec, | |
1117 | f->fr_literal, (file_ptr) offset, | |
1118 | (bfd_size_type) f->fr_fix); | |
1119 | if (x == false) | |
1120 | { | |
1121 | bfd_perror (stdoutput->filename); | |
1122 | as_perror (_("FATAL: Can't write %s"), stdoutput->filename); | |
1123 | exit (EXIT_FAILURE); | |
1124 | } | |
1125 | offset += f->fr_fix; | |
1126 | } | |
1127 | fill_literal = f->fr_literal + f->fr_fix; | |
1128 | fill_size = f->fr_var; | |
1129 | count = f->fr_offset; | |
1130 | assert (count >= 0); | |
1131 | if (fill_size && count) | |
1132 | { | |
1133 | char buf[256]; | |
1134 | if (fill_size > sizeof(buf)) | |
1135 | { | |
1136 | /* Do it the old way. Can this ever happen? */ | |
1137 | while (count--) | |
1138 | { | |
1139 | x = bfd_set_section_contents (stdoutput, sec, | |
1140 | fill_literal, | |
1141 | (file_ptr) offset, | |
1142 | (bfd_size_type) fill_size); | |
1143 | if (x == false) | |
1144 | { | |
1145 | bfd_perror (stdoutput->filename); | |
1146 | as_perror (_("FATAL: Can't write %s"), stdoutput->filename); | |
1147 | exit (EXIT_FAILURE); | |
1148 | } | |
1149 | offset += fill_size; | |
1150 | } | |
1151 | } | |
1152 | else | |
1153 | { | |
1154 | /* Build a buffer full of fill objects and output it as | |
1155 | often as necessary. This saves on the overhead of | |
1156 | potentially lots of bfd_set_section_contents calls. */ | |
1157 | int n_per_buf, i; | |
1158 | if (fill_size == 1) | |
1159 | { | |
1160 | n_per_buf = sizeof (buf); | |
1161 | memset (buf, *fill_literal, n_per_buf); | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | char *bufp; | |
1166 | n_per_buf = sizeof(buf)/fill_size; | |
1167 | for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) | |
1168 | memcpy(bufp, fill_literal, fill_size); | |
1169 | } | |
1170 | for (; count > 0; count -= n_per_buf) | |
1171 | { | |
1172 | n_per_buf = n_per_buf > count ? count : n_per_buf; | |
1173 | x = bfd_set_section_contents (stdoutput, sec, | |
1174 | buf, (file_ptr) offset, | |
1175 | (bfd_size_type) n_per_buf * fill_size); | |
1176 | if (x != true) | |
1177 | as_fatal (_("Cannot write to output file.")); | |
1178 | offset += n_per_buf * fill_size; | |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | } | |
1183 | } | |
1184 | #endif | |
1185 | ||
1186 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) | |
1187 | static void | |
1188 | merge_data_into_text () | |
1189 | { | |
1190 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) | |
1191 | seg_info (text_section)->frchainP->frch_last->fr_next = | |
1192 | seg_info (data_section)->frchainP->frch_root; | |
1193 | seg_info (text_section)->frchainP->frch_last = | |
1194 | seg_info (data_section)->frchainP->frch_last; | |
1195 | seg_info (data_section)->frchainP = 0; | |
1196 | #else | |
1197 | fixS *tmp; | |
1198 | ||
1199 | text_last_frag->fr_next = data_frag_root; | |
1200 | text_last_frag = data_last_frag; | |
1201 | data_last_frag = NULL; | |
1202 | data_frag_root = NULL; | |
1203 | if (text_fix_root) | |
1204 | { | |
1205 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
1206 | tmp->fx_next = data_fix_root; | |
1207 | text_fix_tail = data_fix_tail; | |
1208 | } | |
1209 | else | |
1210 | text_fix_root = data_fix_root; | |
1211 | data_fix_root = NULL; | |
1212 | #endif | |
1213 | } | |
1214 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ | |
1215 | ||
1216 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
1217 | static void | |
1218 | relax_and_size_all_segments () | |
1219 | { | |
1220 | fragS *fragP; | |
1221 | ||
1222 | relax_segment (text_frag_root, SEG_TEXT); | |
1223 | relax_segment (data_frag_root, SEG_DATA); | |
1224 | relax_segment (bss_frag_root, SEG_BSS); | |
1225 | /* | |
1226 | * Now the addresses of frags are correct within the segment. | |
1227 | */ | |
1228 | ||
1229 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
1230 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
1231 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
1232 | ||
1233 | /* | |
1234 | * Join the 2 segments into 1 huge segment. | |
1235 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
1236 | * Then join the data frags after the text frags. | |
1237 | * | |
1238 | * Determine a_data [length of data segment]. | |
1239 | */ | |
1240 | if (data_frag_root) | |
1241 | { | |
1242 | register relax_addressT slide; | |
1243 | ||
1244 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
1245 | ||
1246 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
1247 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
1248 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
1249 | #ifdef OBJ_BOUT | |
1250 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
1251 | /* For b.out: If the data section has a strict alignment | |
1252 | requirement, its load address in the .o file will be | |
1253 | rounded up from the size of the text section. These | |
1254 | two values are *not* the same! Similarly for the bss | |
1255 | section.... */ | |
1256 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
1257 | #endif | |
1258 | ||
1259 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
1260 | { | |
1261 | fragP->fr_address += slide; | |
1262 | } /* for each data frag */ | |
1263 | ||
1264 | know (text_last_frag != 0); | |
1265 | text_last_frag->fr_next = data_frag_root; | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | H_SET_DATA_SIZE (&headers, 0); | |
1270 | } | |
1271 | ||
1272 | #ifdef OBJ_BOUT | |
1273 | /* See above comments on b.out data section address. */ | |
1274 | { | |
1275 | long bss_vma; | |
1276 | if (data_last_frag == 0) | |
1277 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
1278 | else | |
1279 | bss_vma = data_last_frag->fr_address; | |
1280 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
1281 | bss_address_frag.fr_address = bss_vma; | |
1282 | } | |
1283 | #else /* ! OBJ_BOUT */ | |
1284 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
1285 | H_GET_DATA_SIZE (&headers)); | |
1286 | ||
1287 | #endif /* ! OBJ_BOUT */ | |
1288 | ||
1289 | /* Slide all the frags */ | |
1290 | if (bss_frag_root) | |
1291 | { | |
1292 | relax_addressT slide = bss_address_frag.fr_address; | |
1293 | ||
1294 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
1295 | { | |
1296 | fragP->fr_address += slide; | |
1297 | } /* for each bss frag */ | |
1298 | } | |
1299 | ||
1300 | if (bss_last_frag) | |
1301 | H_SET_BSS_SIZE (&headers, | |
1302 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
1303 | else | |
1304 | H_SET_BSS_SIZE (&headers, 0); | |
1305 | } | |
1306 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
1307 | ||
1308 | #if defined (BFD_ASSEMBLER) || !defined (BFD) | |
1309 | ||
1310 | #ifdef BFD_ASSEMBLER | |
1311 | static void | |
1312 | set_symtab () | |
1313 | { | |
1314 | int nsyms; | |
1315 | asymbol **asympp; | |
1316 | symbolS *symp; | |
1317 | boolean result; | |
1318 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); | |
1319 | ||
1320 | /* Count symbols. We can't rely on a count made by the loop in | |
1321 | write_object_file, because *_frob_file may add a new symbol or | |
1322 | two. */ | |
1323 | nsyms = 0; | |
1324 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1325 | nsyms++; | |
1326 | ||
1327 | if (nsyms) | |
1328 | { | |
1329 | int i; | |
1330 | ||
1331 | asympp = (asymbol **) bfd_alloc (stdoutput, | |
1332 | nsyms * sizeof (asymbol *)); | |
1333 | symp = symbol_rootP; | |
1334 | for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) | |
1335 | { | |
49309057 ILT |
1336 | asympp[i] = symbol_get_bfdsym (symp); |
1337 | symbol_mark_written (symp); | |
252b5132 RH |
1338 | } |
1339 | } | |
1340 | else | |
1341 | asympp = 0; | |
1342 | result = bfd_set_symtab (stdoutput, asympp, nsyms); | |
1343 | assert (result == true); | |
1344 | symbol_table_frozen = 1; | |
1345 | } | |
1346 | #endif | |
1347 | ||
1348 | /* Finish the subsegments. After every sub-segment, we fake an | |
1349 | ".align ...". This conforms to BSD4.2 brane-damage. We then fake | |
1350 | ".fill 0" because that is the kind of frag that requires least | |
1351 | thought. ".align" frags like to have a following frag since that | |
1352 | makes calculating their intended length trivial. */ | |
1353 | ||
1354 | #ifndef SUB_SEGMENT_ALIGN | |
1355 | #ifdef BFD_ASSEMBLER | |
1356 | #define SUB_SEGMENT_ALIGN(SEG) (0) | |
1357 | #else | |
1358 | #define SUB_SEGMENT_ALIGN(SEG) (2) | |
1359 | #endif | |
1360 | #endif | |
1361 | ||
1362 | void | |
1363 | subsegs_finish () | |
1364 | { | |
1365 | struct frchain *frchainP; | |
1366 | ||
1367 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) | |
1368 | { | |
1369 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); | |
1370 | ||
1371 | /* This now gets called even if we had errors. In that case, | |
1372 | any alignment is meaningless, and, moreover, will look weird | |
1373 | if we are generating a listing. */ | |
1374 | frag_align (had_errors () ? 0 : SUB_SEGMENT_ALIGN (now_seg), | |
1375 | NOP_OPCODE, 0); | |
1376 | ||
1377 | /* frag_align will have left a new frag. | |
1378 | Use this last frag for an empty ".fill". | |
1379 | ||
1380 | For this segment ... | |
1381 | Create a last frag. Do not leave a "being filled in frag". */ | |
1382 | ||
1383 | frag_wane (frag_now); | |
1384 | frag_now->fr_fix = 0; | |
1385 | know (frag_now->fr_next == NULL); | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | /* Write the object file. */ | |
1390 | ||
1391 | void | |
1392 | write_object_file () | |
1393 | { | |
1394 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) | |
1395 | fragS *fragP; /* Track along all frags. */ | |
1396 | #endif | |
1397 | ||
1398 | /* Do we really want to write it? */ | |
1399 | { | |
1400 | int n_warns, n_errs; | |
1401 | n_warns = had_warnings (); | |
1402 | n_errs = had_errors (); | |
1403 | /* The -Z flag indicates that an object file should be generated, | |
1404 | regardless of warnings and errors. */ | |
1405 | if (flag_always_generate_output) | |
1406 | { | |
1407 | if (n_warns || n_errs) | |
1408 | as_warn (_("%d error%s, %d warning%s, generating bad object file.\n"), | |
1409 | n_errs, n_errs == 1 ? "" : "s", | |
1410 | n_warns, n_warns == 1 ? "" : "s"); | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | if (n_errs) | |
1415 | as_fatal (_("%d error%s, %d warning%s, no object file generated.\n"), | |
1416 | n_errs, n_errs == 1 ? "" : "s", | |
1417 | n_warns, n_warns == 1 ? "" : "s"); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | #ifdef OBJ_VMS | |
1422 | /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call | |
1423 | a routine to check for the definition of the procedure "_main", | |
1424 | and if so -- fix it up so that it can be program entry point. */ | |
1425 | vms_check_for_main (); | |
1426 | #endif /* OBJ_VMS */ | |
1427 | ||
1428 | /* From now on, we don't care about sub-segments. Build one frag chain | |
1429 | for each segment. Linked thru fr_next. */ | |
1430 | ||
1431 | #ifdef BFD_ASSEMBLER | |
1432 | /* Remove the sections created by gas for its own purposes. */ | |
1433 | { | |
1434 | asection **seclist, *sec; | |
1435 | int i; | |
1436 | ||
1437 | seclist = &stdoutput->sections; | |
1438 | while (seclist && *seclist) | |
1439 | { | |
1440 | sec = *seclist; | |
1441 | while (sec == reg_section || sec == expr_section) | |
1442 | { | |
1443 | sec = sec->next; | |
1444 | *seclist = sec; | |
1445 | stdoutput->section_count--; | |
1446 | if (!sec) | |
1447 | break; | |
1448 | } | |
1449 | if (*seclist) | |
1450 | seclist = &(*seclist)->next; | |
1451 | } | |
1452 | i = 0; | |
1453 | bfd_map_over_sections (stdoutput, renumber_sections, &i); | |
1454 | } | |
1455 | ||
1456 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1457 | #else | |
1458 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); | |
1459 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1460 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
1461 | #endif | |
1462 | ||
1463 | /* We have two segments. If user gave -R flag, then we must put the | |
1464 | data frags into the text segment. Do this before relaxing so | |
1465 | we know to take advantage of -R and make shorter addresses. */ | |
1466 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
1467 | if (flag_readonly_data_in_text) | |
1468 | { | |
1469 | merge_data_into_text (); | |
1470 | } | |
1471 | #endif | |
1472 | ||
1473 | #ifdef BFD_ASSEMBLER | |
1474 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1475 | #else | |
1476 | relax_and_size_all_segments (); | |
1477 | #endif /* BFD_ASSEMBLER */ | |
1478 | ||
1479 | #ifndef BFD_ASSEMBLER | |
1480 | /* | |
1481 | * | |
1482 | * Crawl the symbol chain. | |
1483 | * | |
1484 | * For each symbol whose value depends on a frag, take the address of | |
1485 | * that frag and subsume it into the value of the symbol. | |
1486 | * After this, there is just one way to lookup a symbol value. | |
1487 | * Values are left in their final state for object file emission. | |
1488 | * We adjust the values of 'L' local symbols, even if we do | |
1489 | * not intend to emit them to the object file, because their values | |
1490 | * are needed for fix-ups. | |
1491 | * | |
1492 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1493 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1494 | * | |
1495 | * Count the remaining symbols. | |
1496 | * Assign a symbol number to each symbol. | |
1497 | * Count the number of string-table chars we will emit. | |
1498 | * Put this info into the headers as appropriate. | |
1499 | * | |
1500 | */ | |
1501 | know (zero_address_frag.fr_address == 0); | |
1502 | string_byte_count = sizeof (string_byte_count); | |
1503 | ||
1504 | obj_crawl_symbol_chain (&headers); | |
1505 | ||
1506 | if (string_byte_count == sizeof (string_byte_count)) | |
1507 | string_byte_count = 0; | |
1508 | ||
1509 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1510 | ||
1511 | /* | |
1512 | * Addresses of frags now reflect addresses we use in the object file. | |
1513 | * Symbol values are correct. | |
1514 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1515 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1516 | */ | |
1517 | subseg_change (SEG_TEXT, 0); | |
1518 | ||
1519 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1520 | { | |
1521 | /* At this point we have linked all the frags into a single | |
1522 | chain. However, cvt_frag_to_fill may call md_convert_frag | |
1523 | which may call fix_new. We need to ensure that fix_new adds | |
1524 | the fixup to the right section. */ | |
1525 | if (fragP == data_frag_root) | |
1526 | subseg_change (SEG_DATA, 0); | |
1527 | ||
1528 | cvt_frag_to_fill (&headers, SEG_TEXT, fragP); | |
1529 | ||
1530 | /* Some assert macros don't work with # directives mixed in. */ | |
1531 | #ifndef NDEBUG | |
1532 | if (!(fragP->fr_next == NULL | |
1533 | #ifdef OBJ_BOUT | |
1534 | || fragP->fr_next == data_frag_root | |
1535 | #endif | |
1536 | || ((fragP->fr_next->fr_address - fragP->fr_address) | |
1537 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) | |
1538 | abort (); | |
1539 | #endif | |
1540 | } | |
1541 | #endif /* ! BFD_ASSEMBLER */ | |
1542 | ||
1543 | #ifndef WORKING_DOT_WORD | |
1544 | { | |
1545 | struct broken_word *lie; | |
1546 | struct broken_word **prevP; | |
1547 | ||
1548 | prevP = &broken_words; | |
1549 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1550 | if (!lie->added) | |
1551 | { | |
1552 | expressionS exp; | |
1553 | ||
1554 | subseg_change (lie->seg, lie->subseg); | |
1555 | exp.X_op = O_subtract; | |
1556 | exp.X_add_symbol = lie->add; | |
1557 | exp.X_op_symbol = lie->sub; | |
1558 | exp.X_add_number = lie->addnum; | |
1559 | #ifdef BFD_ASSEMBLER | |
1560 | #ifdef TC_CONS_FIX_NEW | |
1561 | TC_CONS_FIX_NEW (lie->frag, | |
1562 | lie->word_goes_here - lie->frag->fr_literal, | |
1563 | 2, &exp); | |
1564 | #else | |
1565 | fix_new_exp (lie->frag, | |
1566 | lie->word_goes_here - lie->frag->fr_literal, | |
1567 | 2, &exp, 0, BFD_RELOC_16); | |
1568 | #endif | |
1569 | #else | |
1570 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
1571 | fix_new_exp (lie->frag, | |
1572 | lie->word_goes_here - lie->frag->fr_literal, | |
1573 | 2, &exp, 0, NO_RELOC); | |
1574 | #else | |
1575 | #ifdef TC_NS32K | |
1576 | fix_new_ns32k_exp (lie->frag, | |
1577 | lie->word_goes_here - lie->frag->fr_literal, | |
1578 | 2, &exp, 0, 0, 2, 0, 0); | |
1579 | #else | |
1580 | fix_new_exp (lie->frag, | |
1581 | lie->word_goes_here - lie->frag->fr_literal, | |
1582 | 2, &exp, 0, 0); | |
1583 | #endif /* TC_NS32K */ | |
1584 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ | |
1585 | #endif /* BFD_ASSEMBLER */ | |
1586 | *prevP = lie->next_broken_word; | |
1587 | } | |
1588 | else | |
1589 | prevP = &(lie->next_broken_word); | |
1590 | ||
1591 | for (lie = broken_words; lie;) | |
1592 | { | |
1593 | struct broken_word *untruth; | |
1594 | char *table_ptr; | |
1595 | addressT table_addr; | |
1596 | addressT from_addr, to_addr; | |
1597 | int n, m; | |
1598 | ||
1599 | subseg_change (lie->seg, lie->subseg); | |
1600 | fragP = lie->dispfrag; | |
1601 | ||
1602 | /* Find out how many broken_words go here. */ | |
1603 | n = 0; | |
1604 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1605 | if (untruth->added == 1) | |
1606 | n++; | |
1607 | ||
1608 | table_ptr = lie->dispfrag->fr_opcode; | |
1609 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
1610 | /* Create the jump around the long jumps. This is a short | |
1611 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
1612 | from_addr = table_addr; | |
1613 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1614 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1615 | table_ptr += md_short_jump_size; | |
1616 | table_addr += md_short_jump_size; | |
1617 | ||
1618 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1619 | { | |
1620 | if (lie->added == 2) | |
1621 | continue; | |
1622 | /* Patch the jump table */ | |
1623 | /* This is the offset from ??? to table_ptr+0 */ | |
1624 | to_addr = table_addr - S_GET_VALUE (lie->sub); | |
1625 | #ifdef BFD_ASSEMBLER | |
49309057 | 1626 | to_addr -= symbol_get_frag (lie->sub)->fr_address; |
252b5132 RH |
1627 | #endif |
1628 | md_number_to_chars (lie->word_goes_here, to_addr, 2); | |
1629 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1630 | { | |
1631 | if (untruth->use_jump == lie) | |
1632 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1633 | } | |
1634 | ||
1635 | /* Install the long jump */ | |
1636 | /* this is a long jump from table_ptr+0 to the final target */ | |
1637 | from_addr = table_addr; | |
1638 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
1639 | #ifdef BFD_ASSEMBLER | |
49309057 | 1640 | to_addr += symbol_get_frag (lie->add)->fr_address; |
252b5132 RH |
1641 | #endif |
1642 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1643 | table_ptr += md_long_jump_size; | |
1644 | table_addr += md_long_jump_size; | |
1645 | } | |
1646 | } | |
1647 | } | |
1648 | #endif /* not WORKING_DOT_WORD */ | |
1649 | ||
1650 | #ifndef BFD_ASSEMBLER | |
1651 | #ifndef OBJ_VMS | |
1652 | { /* not vms */ | |
1653 | char *the_object_file; | |
1654 | long object_file_size; | |
1655 | /* | |
1656 | * Scan every FixS performing fixups. We had to wait until now to do | |
1657 | * this because md_convert_frag() may have made some fixSs. | |
1658 | */ | |
1659 | int trsize, drsize; | |
1660 | ||
1661 | subseg_change (SEG_TEXT, 0); | |
1662 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); | |
1663 | subseg_change (SEG_DATA, 0); | |
1664 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); | |
1665 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); | |
1666 | ||
1667 | /* FIXME move this stuff into the pre-write-hook */ | |
1668 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1669 | H_SET_ENTRY_POINT (&headers, 0); | |
1670 | ||
1671 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
1672 | ||
1673 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1674 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1675 | ||
1676 | output_file_create (out_file_name); | |
1677 | ||
1678 | obj_header_append (&next_object_file_charP, &headers); | |
1679 | ||
1680 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1681 | ||
1682 | /* | |
1683 | * Emit code. | |
1684 | */ | |
1685 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1686 | { | |
1687 | register long count; | |
1688 | register char *fill_literal; | |
1689 | register long fill_size; | |
1690 | ||
1691 | PROGRESS (1); | |
1692 | know (fragP->fr_type == rs_fill); | |
1693 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1694 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1695 | fill_size = fragP->fr_var; | |
1696 | know (fragP->fr_offset >= 0); | |
1697 | ||
1698 | for (count = fragP->fr_offset; count; count--) | |
1699 | { | |
1700 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1701 | } /* for each */ | |
1702 | ||
1703 | } /* for each code frag. */ | |
1704 | ||
1705 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1706 | ||
1707 | /* | |
1708 | * Emit relocations. | |
1709 | */ | |
1710 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); | |
1711 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers))); | |
1712 | #ifdef TC_I960 | |
1713 | /* Make addresses in data relocation directives relative to beginning of | |
1714 | * first data fragment, not end of last text fragment: alignment of the | |
1715 | * start of the data segment may place a gap between the segments. | |
1716 | */ | |
1717 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); | |
1718 | #else /* TC_I960 */ | |
1719 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); | |
1720 | #endif /* TC_I960 */ | |
1721 | ||
1722 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers))); | |
1723 | ||
1724 | /* | |
1725 | * Emit line number entries. | |
1726 | */ | |
1727 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); | |
1728 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers))); | |
1729 | ||
1730 | /* | |
1731 | * Emit symbols. | |
1732 | */ | |
1733 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); | |
1734 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers) + H_GET_SYMBOL_TABLE_SIZE (&headers))); | |
1735 | ||
1736 | /* | |
1737 | * Emit strings. | |
1738 | */ | |
1739 | ||
1740 | if (string_byte_count > 0) | |
1741 | { | |
1742 | obj_emit_strings (&next_object_file_charP); | |
1743 | } /* only if we have a string table */ | |
1744 | ||
1745 | #ifdef BFD_HEADERS | |
1746 | bfd_seek (stdoutput, 0, 0); | |
1747 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
1748 | #else | |
1749 | ||
1750 | /* Write the data to the file */ | |
1751 | output_file_append (the_object_file, object_file_size, out_file_name); | |
1752 | free (the_object_file); | |
1753 | #endif | |
1754 | } /* non vms output */ | |
1755 | #else /* OBJ_VMS */ | |
1756 | /* | |
1757 | * Now do the VMS-dependent part of writing the object file | |
1758 | */ | |
1759 | vms_write_object_file (H_GET_TEXT_SIZE (&headers), | |
1760 | H_GET_DATA_SIZE (&headers), | |
1761 | H_GET_BSS_SIZE (&headers), | |
1762 | text_frag_root, data_frag_root); | |
1763 | #endif /* OBJ_VMS */ | |
1764 | #else /* BFD_ASSEMBLER */ | |
1765 | ||
1766 | /* Resolve symbol values. This needs to be done before processing | |
1767 | the relocations. */ | |
1768 | if (symbol_rootP) | |
1769 | { | |
1770 | symbolS *symp; | |
1771 | ||
1772 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
49309057 | 1773 | resolve_symbol_value (symp, 1); |
252b5132 | 1774 | } |
49309057 | 1775 | resolve_local_symbol_values (); |
252b5132 RH |
1776 | |
1777 | PROGRESS (1); | |
1778 | ||
1779 | #ifdef tc_frob_file_before_adjust | |
1780 | tc_frob_file_before_adjust (); | |
1781 | #endif | |
1782 | #ifdef obj_frob_file_before_adjust | |
1783 | obj_frob_file_before_adjust (); | |
1784 | #endif | |
1785 | ||
1786 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); | |
1787 | ||
1788 | /* Set up symbol table, and write it out. */ | |
1789 | if (symbol_rootP) | |
1790 | { | |
1791 | symbolS *symp; | |
1792 | ||
1793 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1794 | { | |
1795 | int punt = 0; | |
1796 | const char *name; | |
1797 | ||
49309057 | 1798 | if (symbol_mri_common_p (symp)) |
252b5132 RH |
1799 | { |
1800 | if (S_IS_EXTERNAL (symp)) | |
1801 | as_bad (_("%s: global symbols not supported in common sections"), | |
1802 | S_GET_NAME (symp)); | |
1803 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1804 | continue; | |
1805 | } | |
1806 | ||
1807 | name = S_GET_NAME (symp); | |
1808 | if (name) | |
1809 | { | |
1810 | const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); | |
1811 | /* They only differ if `name' is a fb or dollar local | |
1812 | label name. */ | |
1813 | if (name2 != name && ! S_IS_DEFINED (symp)) | |
1814 | as_bad (_("local label %s is not defined"), name2); | |
1815 | } | |
1816 | ||
1817 | /* Do it again, because adjust_reloc_syms might introduce | |
1818 | more symbols. They'll probably only be section symbols, | |
1819 | but they'll still need to have the values computed. */ | |
49309057 | 1820 | resolve_symbol_value (symp, 1); |
252b5132 RH |
1821 | |
1822 | /* Skip symbols which were equated to undefined or common | |
1823 | symbols. */ | |
49309057 | 1824 | if (symbol_equated_p (symp) |
252b5132 RH |
1825 | && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp))) |
1826 | { | |
1827 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1828 | continue; | |
1829 | } | |
1830 | ||
1831 | /* So far, common symbols have been treated like undefined symbols. | |
1832 | Put them in the common section now. */ | |
1833 | if (S_IS_DEFINED (symp) == 0 | |
1834 | && S_GET_VALUE (symp) != 0) | |
1835 | S_SET_SEGMENT (symp, bfd_com_section_ptr); | |
1836 | #if 0 | |
1837 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", | |
1838 | S_GET_NAME (symp), symp, | |
1839 | S_GET_VALUE (symp), | |
49309057 ILT |
1840 | symbol_get_bfdsym (symp)->flags, |
1841 | segment_name (S_GET_SEGMENT (symp))); | |
252b5132 RH |
1842 | #endif |
1843 | ||
1844 | #ifdef obj_frob_symbol | |
1845 | obj_frob_symbol (symp, punt); | |
1846 | #endif | |
1847 | #ifdef tc_frob_symbol | |
49309057 | 1848 | if (! punt || symbol_used_in_reloc_p (symp)) |
252b5132 RH |
1849 | tc_frob_symbol (symp, punt); |
1850 | #endif | |
1851 | ||
1852 | /* If we don't want to keep this symbol, splice it out of | |
1853 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1854 | want section symbols. Otherwise, we skip local symbols | |
1855 | and symbols that the frob_symbol macros told us to punt, | |
1856 | but we keep such symbols if they are used in relocs. */ | |
1857 | if ((! EMIT_SECTION_SYMBOLS | |
49309057 | 1858 | && symbol_section_p (symp)) |
252b5132 RH |
1859 | /* Note that S_IS_EXTERN and S_IS_LOCAL are not always |
1860 | opposites. Sometimes the former checks flags and the | |
1861 | latter examines the name... */ | |
1862 | || (!S_IS_EXTERN (symp) | |
1863 | && (S_IS_LOCAL (symp) || punt) | |
49309057 | 1864 | && ! symbol_used_in_reloc_p (symp))) |
252b5132 RH |
1865 | { |
1866 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1867 | /* After symbol_remove, symbol_next(symp) still returns | |
1868 | the one that came after it in the chain. So we don't | |
1869 | need to do any extra cleanup work here. */ | |
1870 | ||
1871 | continue; | |
1872 | } | |
1873 | ||
1874 | /* Make sure we really got a value for the symbol. */ | |
49309057 | 1875 | if (! symbol_resolved_p (symp)) |
252b5132 RH |
1876 | { |
1877 | as_bad (_("can't resolve value for symbol \"%s\""), | |
1878 | S_GET_NAME (symp)); | |
49309057 | 1879 | symbol_mark_resolved (symp); |
252b5132 RH |
1880 | } |
1881 | ||
1882 | /* Set the value into the BFD symbol. Up til now the value | |
1883 | has only been kept in the gas symbolS struct. */ | |
49309057 | 1884 | symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp); |
252b5132 RH |
1885 | } |
1886 | } | |
1887 | ||
1888 | PROGRESS (1); | |
1889 | ||
1890 | /* Now do any format-specific adjustments to the symbol table, such | |
1891 | as adding file symbols. */ | |
1892 | #ifdef tc_adjust_symtab | |
1893 | tc_adjust_symtab (); | |
1894 | #endif | |
1895 | #ifdef obj_adjust_symtab | |
1896 | obj_adjust_symtab (); | |
1897 | #endif | |
1898 | ||
1899 | /* Now that all the sizes are known, and contents correct, we can | |
1900 | start writing to the file. */ | |
1901 | set_symtab (); | |
1902 | ||
1903 | /* If *_frob_file changes the symbol value at this point, it is | |
1904 | responsible for moving the changed value into symp->bsym->value | |
1905 | as well. Hopefully all symbol value changing can be done in | |
1906 | *_frob_symbol. */ | |
1907 | #ifdef tc_frob_file | |
1908 | tc_frob_file (); | |
1909 | #endif | |
1910 | #ifdef obj_frob_file | |
1911 | obj_frob_file (); | |
1912 | #endif | |
1913 | ||
1914 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); | |
1915 | ||
1916 | #ifdef tc_frob_file_after_relocs | |
1917 | tc_frob_file_after_relocs (); | |
1918 | #endif | |
1919 | #ifdef obj_frob_file_after_relocs | |
1920 | obj_frob_file_after_relocs (); | |
1921 | #endif | |
1922 | ||
1923 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); | |
1924 | #endif /* BFD_ASSEMBLER */ | |
1925 | } | |
1926 | #endif /* ! BFD */ | |
1927 | ||
1928 | /* | |
1929 | * relax_segment() | |
1930 | * | |
1931 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1932 | * values. | |
1933 | * | |
1934 | * Relax the frags. | |
1935 | * | |
1936 | * After this, all frags in this segment have addresses that are correct | |
1937 | * within the segment. Since segments live in different file addresses, | |
1938 | * these frag addresses may not be the same as final object-file addresses. | |
1939 | */ | |
1940 | ||
1941 | #ifdef TC_GENERIC_RELAX_TABLE | |
1942 | ||
1943 | static int is_dnrange PARAMS ((fragS *, fragS *)); | |
1944 | ||
1945 | /* Subroutines of relax_segment. */ | |
1946 | static int | |
1947 | is_dnrange (f1, f2) | |
1948 | fragS *f1; | |
1949 | fragS *f2; | |
1950 | { | |
1951 | for (; f1; f1 = f1->fr_next) | |
1952 | if (f1->fr_next == f2) | |
1953 | return 1; | |
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | /* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */ | |
1958 | ||
1959 | long | |
1960 | relax_frag (fragP, stretch) | |
1961 | fragS *fragP; | |
1962 | long stretch; | |
1963 | { | |
1964 | const relax_typeS *this_type; | |
1965 | const relax_typeS *start_type; | |
1966 | relax_substateT next_state; | |
1967 | relax_substateT this_state; | |
1968 | long aim, target, growth; | |
1969 | symbolS *symbolP = fragP->fr_symbol; | |
1970 | long offset = fragP->fr_offset; | |
1971 | /* Recompute was_address by undoing "+= stretch" done by relax_segment. */ | |
1972 | unsigned long was_address = fragP->fr_address - stretch; | |
1973 | unsigned long address = fragP->fr_address; | |
1974 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; | |
1975 | ||
1976 | this_state = fragP->fr_subtype; | |
1977 | start_type = this_type = table + this_state; | |
1978 | target = offset; | |
1979 | ||
1980 | if (symbolP) | |
1981 | { | |
1982 | #ifndef DIFF_EXPR_OK | |
1983 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) | |
1984 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1985 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1986 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
1987 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
1988 | #endif | |
1989 | know (symbolP->sy_frag); | |
1990 | #endif | |
1991 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) | |
1992 | || symbolP->sy_frag == &zero_address_frag); | |
49309057 | 1993 | target += S_GET_VALUE (symbolP) + symbol_get_frag (symbolP)->fr_address; |
252b5132 RH |
1994 | |
1995 | /* If frag has yet to be reached on this pass, | |
1996 | assume it will move by STRETCH just as we did. | |
1997 | If this is not so, it will be because some frag | |
1998 | between grows, and that will force another pass. | |
1999 | ||
2000 | Beware zero-length frags. | |
2001 | ||
2002 | There should be a faster way to do this. */ | |
2003 | ||
49309057 ILT |
2004 | if (symbol_get_frag (symbolP)->fr_address >= was_address |
2005 | && is_dnrange (fragP, symbol_get_frag (symbolP))) | |
252b5132 RH |
2006 | { |
2007 | target += stretch; | |
2008 | } | |
2009 | } | |
2010 | ||
2011 | aim = target - address - fragP->fr_fix; | |
2012 | #ifdef TC_PCREL_ADJUST | |
2013 | /* Currently only the ns32k family needs this */ | |
2014 | aim += TC_PCREL_ADJUST(fragP); | |
2015 | /*#else*/ | |
2016 | /* This machine doesn't want to use pcrel_adjust. | |
2017 | In that case, pcrel_adjust should be zero. */ | |
2018 | /* assert (fragP->fr_targ.ns32k.pcrel_adjust == 0);*/ | |
2019 | #endif | |
2020 | #ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */ | |
2021 | md_prepare_relax_scan (fragP, address, aim, this_state, this_type); | |
2022 | #endif | |
2023 | ||
2024 | if (aim < 0) | |
2025 | { | |
2026 | /* Look backwards. */ | |
2027 | for (next_state = this_type->rlx_more; next_state;) | |
2028 | if (aim >= this_type->rlx_backward) | |
2029 | next_state = 0; | |
2030 | else | |
2031 | { | |
2032 | /* Grow to next state. */ | |
2033 | this_state = next_state; | |
2034 | this_type = table + this_state; | |
2035 | next_state = this_type->rlx_more; | |
2036 | } | |
2037 | } | |
2038 | else | |
2039 | { | |
2040 | /* Look forwards. */ | |
2041 | for (next_state = this_type->rlx_more; next_state;) | |
2042 | if (aim <= this_type->rlx_forward) | |
2043 | next_state = 0; | |
2044 | else | |
2045 | { | |
2046 | /* Grow to next state. */ | |
2047 | this_state = next_state; | |
2048 | this_type = table + this_state; | |
2049 | next_state = this_type->rlx_more; | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | growth = this_type->rlx_length - start_type->rlx_length; | |
2054 | if (growth != 0) | |
2055 | fragP->fr_subtype = this_state; | |
2056 | return growth; | |
2057 | } | |
2058 | ||
2059 | #endif /* defined (TC_GENERIC_RELAX_TABLE) */ | |
2060 | ||
2061 | /* Relax_align. Advance location counter to next address that has 'alignment' | |
2062 | lowest order bits all 0s, return size of adjustment made. */ | |
2063 | static relax_addressT | |
2064 | relax_align (address, alignment) | |
2065 | register relax_addressT address; /* Address now. */ | |
2066 | register int alignment; /* Alignment (binary). */ | |
2067 | { | |
2068 | relax_addressT mask; | |
2069 | relax_addressT new_address; | |
2070 | ||
2071 | mask = ~((~0) << alignment); | |
2072 | new_address = (address + mask) & (~mask); | |
2073 | #ifdef LINKER_RELAXING_SHRINKS_ONLY | |
2074 | if (linkrelax) | |
2075 | /* We must provide lots of padding, so the linker can discard it | |
2076 | when needed. The linker will not add extra space, ever. */ | |
2077 | new_address += (1 << alignment); | |
2078 | #endif | |
2079 | return (new_address - address); | |
2080 | } | |
2081 | ||
2082 | void | |
2083 | relax_segment (segment_frag_root, segment) | |
2084 | struct frag *segment_frag_root; | |
2085 | segT segment; | |
2086 | { | |
2087 | register struct frag *fragP; | |
2088 | register relax_addressT address; | |
2089 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) | |
2090 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); | |
2091 | #endif | |
2092 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ | |
2093 | subseg_change (segment, 0); | |
2094 | ||
2095 | /* For each frag in segment: count and store (a 1st guess of) | |
2096 | fr_address. */ | |
2097 | address = 0; | |
2098 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
2099 | { | |
2100 | fragP->fr_address = address; | |
2101 | address += fragP->fr_fix; | |
2102 | ||
2103 | switch (fragP->fr_type) | |
2104 | { | |
2105 | case rs_fill: | |
2106 | address += fragP->fr_offset * fragP->fr_var; | |
2107 | break; | |
2108 | ||
2109 | case rs_align: | |
2110 | case rs_align_code: | |
2111 | { | |
2112 | addressT offset = relax_align (address, (int) fragP->fr_offset); | |
2113 | ||
2114 | if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype) | |
2115 | offset = 0; | |
2116 | ||
2117 | if (offset % fragP->fr_var != 0) | |
2118 | { | |
2119 | as_bad (_("alignment padding (%lu bytes) not a multiple of %ld"), | |
2120 | (unsigned long) offset, (long) fragP->fr_var); | |
2121 | offset -= (offset % fragP->fr_var); | |
2122 | } | |
2123 | ||
2124 | address += offset; | |
2125 | } | |
2126 | break; | |
2127 | ||
2128 | case rs_org: | |
2129 | case rs_space: | |
2130 | /* Assume .org is nugatory. It will grow with 1st relax. */ | |
2131 | break; | |
2132 | ||
2133 | case rs_machine_dependent: | |
2134 | address += md_estimate_size_before_relax (fragP, segment); | |
2135 | break; | |
2136 | ||
2137 | #ifndef WORKING_DOT_WORD | |
2138 | /* Broken words don't concern us yet */ | |
2139 | case rs_broken_word: | |
2140 | break; | |
2141 | #endif | |
2142 | ||
2143 | case rs_leb128: | |
2144 | /* Initial guess is always 1; doing otherwise can result in | |
2145 | stable solutions that are larger than the minimum. */ | |
2146 | address += fragP->fr_offset = 1; | |
2147 | break; | |
2148 | ||
2149 | case rs_cfa: | |
2150 | address += eh_frame_estimate_size_before_relax (fragP); | |
2151 | break; | |
2152 | ||
2153 | default: | |
2154 | BAD_CASE (fragP->fr_type); | |
2155 | break; | |
2156 | } /* switch(fr_type) */ | |
2157 | } /* for each frag in the segment */ | |
2158 | ||
2159 | /* Do relax(). */ | |
2160 | { | |
2161 | long stretch; /* May be any size, 0 or negative. */ | |
2162 | /* Cumulative number of addresses we have */ | |
2163 | /* relaxed this pass. */ | |
2164 | /* We may have relaxed more than one address. */ | |
2165 | long stretched; /* Have we stretched on this pass? */ | |
2166 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
2167 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
2168 | we could be scrod. */ | |
2169 | ||
2170 | do | |
2171 | { | |
2172 | stretch = stretched = 0; | |
2173 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
2174 | { | |
2175 | long growth = 0; | |
2176 | addressT was_address; | |
2177 | offsetT offset; | |
2178 | symbolS *symbolP; | |
2179 | ||
2180 | was_address = fragP->fr_address; | |
2181 | address = fragP->fr_address += stretch; | |
2182 | symbolP = fragP->fr_symbol; | |
2183 | offset = fragP->fr_offset; | |
2184 | ||
2185 | switch (fragP->fr_type) | |
2186 | { | |
2187 | case rs_fill: /* .fill never relaxes. */ | |
2188 | growth = 0; | |
2189 | break; | |
2190 | ||
2191 | #ifndef WORKING_DOT_WORD | |
2192 | /* JF: This is RMS's idea. I do *NOT* want to be blamed | |
2193 | for it I do not want to write it. I do not want to have | |
2194 | anything to do with it. This is not the proper way to | |
2195 | implement this misfeature. */ | |
2196 | case rs_broken_word: | |
2197 | { | |
2198 | struct broken_word *lie; | |
2199 | struct broken_word *untruth; | |
2200 | ||
2201 | /* Yes this is ugly (storing the broken_word pointer | |
2202 | in the symbol slot). Still, this whole chunk of | |
2203 | code is ugly, and I don't feel like doing anything | |
2204 | about it. Think of it as stubbornness in action. */ | |
2205 | growth = 0; | |
2206 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
2207 | lie && lie->dispfrag == fragP; | |
2208 | lie = lie->next_broken_word) | |
2209 | { | |
2210 | ||
2211 | if (lie->added) | |
2212 | continue; | |
2213 | ||
49309057 | 2214 | offset = (symbol_get_frag (lie->add)->fr_address |
252b5132 RH |
2215 | + S_GET_VALUE (lie->add) |
2216 | + lie->addnum | |
49309057 | 2217 | - (symbol_get_frag (lie->sub)->fr_address |
252b5132 RH |
2218 | + S_GET_VALUE (lie->sub))); |
2219 | if (offset <= -32768 || offset >= 32767) | |
2220 | { | |
2221 | if (flag_warn_displacement) | |
2222 | { | |
2223 | char buf[50]; | |
2224 | sprint_value (buf, (addressT) lie->addnum); | |
2225 | as_warn (_(".word %s-%s+%s didn't fit"), | |
2226 | S_GET_NAME (lie->add), | |
2227 | S_GET_NAME (lie->sub), | |
2228 | buf); | |
2229 | } | |
2230 | lie->added = 1; | |
2231 | if (fragP->fr_subtype == 0) | |
2232 | { | |
2233 | fragP->fr_subtype++; | |
2234 | growth += md_short_jump_size; | |
2235 | } | |
2236 | for (untruth = lie->next_broken_word; | |
2237 | untruth && untruth->dispfrag == lie->dispfrag; | |
2238 | untruth = untruth->next_broken_word) | |
49309057 ILT |
2239 | if ((symbol_get_frag (untruth->add) |
2240 | == symbol_get_frag (lie->add)) | |
2241 | && (S_GET_VALUE (untruth->add) | |
2242 | == S_GET_VALUE (lie->add))) | |
252b5132 RH |
2243 | { |
2244 | untruth->added = 2; | |
2245 | untruth->use_jump = lie; | |
2246 | } | |
2247 | growth += md_long_jump_size; | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | break; | |
2252 | } /* case rs_broken_word */ | |
2253 | #endif | |
2254 | case rs_align: | |
2255 | case rs_align_code: | |
2256 | { | |
2257 | addressT oldoff, newoff; | |
2258 | ||
2259 | oldoff = relax_align (was_address + fragP->fr_fix, | |
2260 | (int) offset); | |
2261 | newoff = relax_align (address + fragP->fr_fix, | |
2262 | (int) offset); | |
2263 | ||
2264 | if (fragP->fr_subtype != 0) | |
2265 | { | |
2266 | if (oldoff > fragP->fr_subtype) | |
2267 | oldoff = 0; | |
2268 | if (newoff > fragP->fr_subtype) | |
2269 | newoff = 0; | |
2270 | } | |
2271 | ||
2272 | growth = newoff - oldoff; | |
2273 | } | |
2274 | break; | |
2275 | ||
2276 | case rs_org: | |
2277 | { | |
2278 | long target = offset; | |
2279 | long after; | |
2280 | ||
2281 | if (symbolP) | |
2282 | { | |
2283 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) | |
2284 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2285 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2286 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
2287 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
2288 | know (symbolP->sy_frag); | |
2289 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2290 | || (symbolP->sy_frag == &zero_address_frag)); | |
2291 | #endif | |
49309057 ILT |
2292 | target += (S_GET_VALUE (symbolP) |
2293 | + symbol_get_frag (symbolP)->fr_address); | |
252b5132 RH |
2294 | } /* if we have a symbol */ |
2295 | ||
2296 | know (fragP->fr_next); | |
2297 | after = fragP->fr_next->fr_address; | |
2298 | growth = target - after; | |
2299 | if (growth < 0) | |
2300 | { | |
2301 | /* Growth may be negative, but variable part of frag | |
2302 | cannot have fewer than 0 chars. That is, we can't | |
2303 | .org backwards. */ | |
2304 | as_bad (_("attempt to .org backwards ignored")); | |
2305 | growth = 0; | |
2306 | } | |
2307 | ||
2308 | growth -= stretch; /* This is an absolute growth factor */ | |
2309 | break; | |
2310 | } | |
2311 | ||
2312 | case rs_space: | |
2313 | if (symbolP) | |
2314 | { | |
2315 | growth = S_GET_VALUE (symbolP); | |
49309057 | 2316 | if (symbol_get_frag (symbolP) != &zero_address_frag |
252b5132 RH |
2317 | || S_IS_COMMON (symbolP) |
2318 | || ! S_IS_DEFINED (symbolP)) | |
2319 | as_bad_where (fragP->fr_file, fragP->fr_line, | |
2320 | _(".space specifies non-absolute value")); | |
2321 | fragP->fr_symbol = 0; | |
2322 | if (growth < 0) | |
2323 | { | |
2324 | as_warn (_(".space or .fill with negative value, ignored")); | |
2325 | growth = 0; | |
2326 | } | |
2327 | } | |
2328 | else | |
2329 | growth = 0; | |
2330 | break; | |
2331 | ||
2332 | case rs_machine_dependent: | |
2333 | #ifdef md_relax_frag | |
2334 | growth = md_relax_frag (fragP, stretch); | |
2335 | #else | |
2336 | #ifdef TC_GENERIC_RELAX_TABLE | |
2337 | /* The default way to relax a frag is to look through | |
2338 | TC_GENERIC_RELAX_TABLE. */ | |
2339 | growth = relax_frag (fragP, stretch); | |
2340 | #endif /* TC_GENERIC_RELAX_TABLE */ | |
2341 | #endif | |
2342 | break; | |
2343 | ||
2344 | case rs_leb128: | |
2345 | { | |
2346 | valueT value; | |
2347 | int size; | |
2348 | ||
2349 | value = resolve_symbol_value (fragP->fr_symbol, 0); | |
2350 | size = sizeof_leb128 (value, fragP->fr_subtype); | |
2351 | growth = size - fragP->fr_offset; | |
2352 | fragP->fr_offset = size; | |
2353 | } | |
2354 | break; | |
2355 | ||
2356 | case rs_cfa: | |
2357 | growth = eh_frame_relax_frag (fragP); | |
2358 | break; | |
2359 | ||
2360 | default: | |
2361 | BAD_CASE (fragP->fr_type); | |
2362 | break; | |
2363 | } | |
2364 | if (growth) | |
2365 | { | |
2366 | stretch += growth; | |
2367 | stretched++; | |
2368 | } | |
2369 | } /* For each frag in the segment. */ | |
2370 | } | |
2371 | while (stretched); /* Until nothing further to relax. */ | |
2372 | } /* do_relax */ | |
2373 | ||
2374 | /* | |
2375 | * We now have valid fr_address'es for each frag. | |
2376 | */ | |
2377 | ||
2378 | /* | |
2379 | * All fr_address's are correct, relative to their own segment. | |
2380 | * We have made all the fixS we will ever make. | |
2381 | */ | |
2382 | } /* relax_segment() */ | |
2383 | ||
2384 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) | |
2385 | ||
2386 | #ifndef TC_RELOC_RTSYM_LOC_FIXUP | |
2387 | #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1) | |
2388 | #endif | |
2389 | ||
2390 | /* fixup_segment() | |
2391 | ||
2392 | Go through all the fixS's in a segment and see which ones can be | |
2393 | handled now. (These consist of fixS where we have since discovered | |
2394 | the value of a symbol, or the address of the frag involved.) | |
2395 | For each one, call md_apply_fix to put the fix into the frag data. | |
2396 | ||
2397 | Result is a count of how many relocation structs will be needed to | |
2398 | handle the remaining fixS's that we couldn't completely handle here. | |
2399 | These will be output later by emit_relocations(). */ | |
2400 | ||
2401 | static long | |
2402 | fixup_segment (fixP, this_segment_type) | |
2403 | register fixS *fixP; | |
2404 | segT this_segment_type; /* N_TYPE bits for segment. */ | |
2405 | { | |
2406 | long seg_reloc_count = 0; | |
2407 | symbolS *add_symbolP; | |
2408 | symbolS *sub_symbolP; | |
2409 | valueT add_number; | |
2410 | int size; | |
2411 | char *place; | |
2412 | long where; | |
2413 | int pcrel, plt; | |
2414 | fragS *fragP; | |
2415 | segT add_symbol_segment = absolute_section; | |
2416 | ||
2417 | /* If the linker is doing the relaxing, we must not do any fixups. | |
2418 | ||
2419 | Well, strictly speaking that's not true -- we could do any that are | |
2420 | PC-relative and don't cross regions that could change size. And for the | |
2421 | i960 (the only machine for which we've got a relaxing linker right now), | |
2422 | we might be able to turn callx/callj into bal anyways in cases where we | |
2423 | know the maximum displacement. */ | |
2424 | if (linkrelax) | |
2425 | { | |
2426 | for (; fixP; fixP = fixP->fx_next) | |
2427 | seg_reloc_count++; | |
2428 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2429 | return seg_reloc_count; | |
2430 | } | |
2431 | ||
2432 | for (; fixP; fixP = fixP->fx_next) | |
2433 | { | |
2434 | ||
2435 | #ifdef DEBUG5 | |
2436 | fprintf (stderr, "\nprocessing fixup:\n"); | |
2437 | print_fixup (fixP); | |
2438 | #endif | |
2439 | ||
2440 | ||
2441 | fragP = fixP->fx_frag; | |
2442 | know (fragP); | |
2443 | where = fixP->fx_where; | |
2444 | place = fragP->fr_literal + where; | |
2445 | size = fixP->fx_size; | |
2446 | add_symbolP = fixP->fx_addsy; | |
2447 | #ifdef TC_VALIDATE_FIX | |
2448 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
2449 | #endif | |
2450 | sub_symbolP = fixP->fx_subsy; | |
2451 | add_number = fixP->fx_offset; | |
2452 | pcrel = fixP->fx_pcrel; | |
2453 | plt = fixP->fx_plt; | |
2454 | ||
2455 | if (add_symbolP != NULL | |
49309057 | 2456 | && symbol_mri_common_p (add_symbolP)) |
252b5132 RH |
2457 | { |
2458 | know (add_symbolP->sy_value.X_op == O_symbol); | |
2459 | add_number += S_GET_VALUE (add_symbolP); | |
2460 | fixP->fx_offset = add_number; | |
49309057 ILT |
2461 | add_symbolP = fixP->fx_addsy = |
2462 | symbol_get_value_expression (add_symbolP)->X_add_symbol; | |
252b5132 RH |
2463 | } |
2464 | ||
2465 | if (add_symbolP) | |
2466 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
2467 | ||
2468 | if (sub_symbolP) | |
2469 | { | |
2470 | resolve_symbol_value (sub_symbolP, 1); | |
2471 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) | |
2472 | { | |
2473 | if (add_symbolP != NULL) | |
2474 | { | |
2475 | add_number += S_GET_VALUE (add_symbolP); | |
2476 | add_symbolP = NULL; | |
2477 | fixP->fx_addsy = NULL; | |
2478 | } | |
2479 | ||
2480 | /* It's just -sym */ | |
2481 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) | |
2482 | { | |
2483 | add_number -= S_GET_VALUE (sub_symbolP); | |
2484 | fixP->fx_subsy = NULL; | |
2485 | } | |
2486 | else if (pcrel | |
2487 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
2488 | { | |
2489 | /* Should try converting to a constant. */ | |
2490 | goto bad_sub_reloc; | |
2491 | } | |
2492 | else | |
2493 | bad_sub_reloc: | |
2494 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2495 | _("Negative of non-absolute symbol %s"), | |
2496 | S_GET_NAME (sub_symbolP)); | |
2497 | } | |
2498 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment | |
2499 | && SEG_NORMAL (add_symbol_segment)) | |
2500 | { | |
2501 | /* Difference of 2 symbols from same segment. | |
2502 | Can't make difference of 2 undefineds: 'value' means | |
2503 | something different for N_UNDF. */ | |
2504 | #ifdef TC_I960 | |
2505 | /* Makes no sense to use the difference of 2 arbitrary symbols | |
2506 | as the target of a call instruction. */ | |
2507 | if (fixP->fx_tcbit) | |
2508 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2509 | _("callj to difference of 2 symbols")); | |
2510 | #endif /* TC_I960 */ | |
2511 | add_number += S_GET_VALUE (add_symbolP) - | |
2512 | S_GET_VALUE (sub_symbolP); | |
2513 | ||
2514 | add_symbolP = NULL; | |
2515 | pcrel = 0; /* No further pcrel processing. */ | |
2516 | ||
2517 | /* Let the target machine make the final determination | |
2518 | as to whether or not a relocation will be needed to | |
2519 | handle this fixup. */ | |
2520 | if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) | |
2521 | { | |
2522 | fixP->fx_pcrel = 0; | |
2523 | fixP->fx_addsy = NULL; | |
2524 | fixP->fx_subsy = NULL; | |
2525 | } | |
2526 | } | |
2527 | else | |
2528 | { | |
2529 | /* Different segments in subtraction. */ | |
2530 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
2531 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
2532 | ||
2533 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
2534 | add_number -= S_GET_VALUE (sub_symbolP); | |
2535 | ||
2536 | #ifdef DIFF_EXPR_OK | |
2537 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type | |
2538 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
2539 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
2540 | pc-relative mode. */ | |
2541 | && pcrel | |
2542 | #endif | |
2543 | ) | |
2544 | { | |
2545 | /* Make it pc-relative. */ | |
2546 | add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) | |
2547 | - S_GET_VALUE (sub_symbolP)); | |
2548 | pcrel = 1; | |
2549 | fixP->fx_pcrel = 1; | |
2550 | sub_symbolP = 0; | |
2551 | fixP->fx_subsy = 0; | |
2552 | } | |
2553 | #endif | |
2554 | #ifdef UNDEFINED_DIFFERENCE_OK | |
2555 | /* The PA needs this for PIC code generation. We basically | |
2556 | don't want to do anything if we have the difference of two | |
2557 | symbols at this point. */ | |
2558 | else if (1) | |
2559 | { | |
2560 | /* Leave it alone. */ | |
2561 | } | |
2562 | #endif | |
2563 | #ifdef BFD_ASSEMBLER | |
2564 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
2565 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
2566 | { | |
2567 | /* Leave it alone. */ | |
2568 | } | |
2569 | #endif | |
2570 | else | |
2571 | { | |
2572 | char buf[50]; | |
2573 | sprint_value (buf, fragP->fr_address + where); | |
2574 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2575 | _("Subtraction of two symbols in different sections \"%s\" {%s section} - \"%s\" {%s section} at file address %s."), | |
2576 | S_GET_NAME (add_symbolP), | |
2577 | segment_name (S_GET_SEGMENT (add_symbolP)), | |
2578 | S_GET_NAME (sub_symbolP), | |
2579 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
2580 | buf); | |
2581 | } | |
2582 | } | |
2583 | } | |
2584 | ||
2585 | if (add_symbolP) | |
2586 | { | |
2587 | if (add_symbol_segment == this_segment_type && pcrel && !plt | |
2588 | && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) | |
2589 | { | |
2590 | /* | |
2591 | * This fixup was made when the symbol's segment was | |
2592 | * SEG_UNKNOWN, but it is now in the local segment. | |
2593 | * So we know how to do the address without relocation. | |
2594 | */ | |
2595 | #ifdef TC_I960 | |
2596 | /* reloc_callj() may replace a 'call' with a 'calls' or a | |
2597 | 'bal', in which cases it modifies *fixP as appropriate. | |
2598 | In the case of a 'calls', no further work is required, | |
2599 | and *fixP has been set up to make the rest of the code | |
2600 | below a no-op. */ | |
2601 | reloc_callj (fixP); | |
2602 | #endif /* TC_I960 */ | |
2603 | ||
2604 | add_number += S_GET_VALUE (add_symbolP); | |
2605 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); | |
2606 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
2607 | ||
2608 | /* Let the target machine make the final determination | |
2609 | as to whether or not a relocation will be needed to | |
2610 | handle this fixup. */ | |
2611 | if (!TC_FORCE_RELOCATION (fixP)) | |
2612 | { | |
2613 | fixP->fx_pcrel = 0; | |
2614 | fixP->fx_addsy = NULL; | |
2615 | } | |
2616 | } | |
2617 | else | |
2618 | { | |
2619 | if (add_symbol_segment == absolute_section | |
2620 | && ! pcrel) | |
2621 | { | |
2622 | #ifdef TC_I960 | |
2623 | /* See comment about reloc_callj() above. */ | |
2624 | reloc_callj (fixP); | |
2625 | #endif /* TC_I960 */ | |
2626 | add_number += S_GET_VALUE (add_symbolP); | |
2627 | ||
2628 | /* Let the target machine make the final determination | |
2629 | as to whether or not a relocation will be needed to | |
2630 | handle this fixup. */ | |
2631 | ||
2632 | if (!TC_FORCE_RELOCATION (fixP)) | |
2633 | { | |
2634 | fixP->fx_addsy = NULL; | |
2635 | add_symbolP = NULL; | |
2636 | } | |
2637 | } | |
2638 | else if (add_symbol_segment == undefined_section | |
2639 | #ifdef BFD_ASSEMBLER | |
2640 | || bfd_is_com_section (add_symbol_segment) | |
2641 | #endif | |
2642 | ) | |
2643 | { | |
2644 | #ifdef TC_I960 | |
2645 | if ((int) fixP->fx_bit_fixP == 13) | |
2646 | { | |
2647 | /* This is a COBR instruction. They have only a | |
2648 | * 13-bit displacement and are only to be used | |
2649 | * for local branches: flag as error, don't generate | |
2650 | * relocation. | |
2651 | */ | |
2652 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2653 | _("can't use COBR format with external label")); | |
2654 | fixP->fx_addsy = NULL; | |
2655 | fixP->fx_done = 1; | |
2656 | continue; | |
2657 | } /* COBR */ | |
2658 | #endif /* TC_I960 */ | |
2659 | ||
2660 | #ifdef OBJ_COFF | |
2661 | #ifdef TE_I386AIX | |
2662 | if (S_IS_COMMON (add_symbolP)) | |
2663 | add_number += S_GET_VALUE (add_symbolP); | |
2664 | #endif /* TE_I386AIX */ | |
2665 | #endif /* OBJ_COFF */ | |
2666 | ++seg_reloc_count; | |
2667 | } | |
2668 | else | |
2669 | { | |
2670 | seg_reloc_count++; | |
2671 | #if !(defined (TC_V850) && defined (OBJ_ELF)) | |
2672 | #if !(defined (TC_M68K) && defined (OBJ_ELF)) | |
2673 | #if !(defined (TC_ARM) && defined (OBJ_ELF)) | |
76171f81 | 2674 | #if !(defined (TC_I960) && defined (OBJ_ELF)) |
252b5132 RH |
2675 | #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) || defined (TE_PE) |
2676 | add_number += S_GET_VALUE (add_symbolP); | |
2677 | #endif | |
2678 | #endif | |
2679 | #endif | |
76171f81 | 2680 | #endif |
252b5132 RH |
2681 | #endif |
2682 | } | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | if (pcrel) | |
2687 | { | |
2688 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); | |
2689 | if (add_symbolP == 0) | |
2690 | { | |
2691 | #ifndef BFD_ASSEMBLER | |
2692 | fixP->fx_addsy = &abs_symbol; | |
2693 | #else | |
2694 | fixP->fx_addsy = section_symbol (absolute_section); | |
2695 | #endif | |
49309057 | 2696 | symbol_mark_used_in_reloc (fixP->fx_addsy); |
252b5132 RH |
2697 | ++seg_reloc_count; |
2698 | } | |
2699 | } | |
2700 | ||
6d4d30bb AM |
2701 | if (!fixP->fx_done) |
2702 | { | |
2703 | #ifdef MD_APPLY_FIX3 | |
2704 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
2705 | #else | |
2706 | #ifdef BFD_ASSEMBLER | |
2707 | md_apply_fix (fixP, &add_number); | |
2708 | #else | |
2709 | md_apply_fix (fixP, add_number); | |
2710 | #endif | |
2711 | #endif | |
2712 | ||
2713 | #ifndef TC_HANDLES_FX_DONE | |
2714 | /* If the tc-* files haven't been converted, assume it's handling | |
2715 | it the old way, where a null fx_addsy means that the fix has | |
2716 | been applied completely, and no further work is needed. */ | |
2717 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2718 | fixP->fx_done = 1; | |
2719 | #endif | |
2720 | } | |
2721 | ||
252b5132 RH |
2722 | if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) |
2723 | { | |
2724 | if ((size_t) size < sizeof (valueT)) | |
2725 | { | |
2726 | valueT mask, hibit; | |
2727 | ||
2728 | /* set all bits to one */ | |
2729 | mask = 0; | |
2730 | mask--; | |
2731 | /* Technically, combining these produces an undefined result | |
2732 | if size is sizeof (valueT), though I think these two | |
2733 | half-way operations should both be defined. And the | |
2734 | compiler should be able to combine them if it's valid on | |
2735 | the host architecture. */ | |
2736 | mask <<= size * 4; | |
2737 | mask <<= size * 4; | |
2738 | hibit = (valueT) 1 << (size * 8 - 1); | |
2739 | if (((add_number & mask) != 0 | |
2740 | || (fixP->fx_signed | |
2741 | && (add_number & hibit) != 0)) | |
2742 | && ((add_number & mask) != mask | |
2743 | || (add_number & hibit) == 0)) | |
2744 | { | |
2745 | char buf[50], buf2[50]; | |
2746 | sprint_value (buf, fragP->fr_address + where); | |
2747 | if (add_number > 1000) | |
2748 | sprint_value (buf2, add_number); | |
2749 | else | |
2750 | sprintf (buf2, "%ld", (long) add_number); | |
2751 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2752 | _("Value of %s too large for field of %d bytes at %s"), | |
2753 | buf2, size, buf); | |
2754 | } /* generic error checking */ | |
2755 | } | |
2756 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
2757 | /* Warn if a .word value is too large when treated as a signed | |
2758 | number. We already know it is not too negative. This is to | |
2759 | catch over-large switches generated by gcc on the 68k. */ | |
2760 | if (!flag_signed_overflow_ok | |
2761 | && size == 2 | |
2762 | && add_number > 0x7fff) | |
2763 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2764 | _("Signed .word overflow; switch may be too large; %ld at 0x%lx"), | |
2765 | (long) add_number, | |
2766 | (unsigned long) (fragP->fr_address + where)); | |
2767 | #endif | |
2768 | } /* not a bit fix */ | |
2769 | ||
252b5132 RH |
2770 | #ifdef TC_VALIDATE_FIX |
2771 | skip: ; | |
2772 | #endif | |
2773 | #ifdef DEBUG5 | |
2774 | fprintf (stderr, "result:\n"); | |
2775 | print_fixup (fixP); | |
2776 | #endif | |
2777 | } /* For each fixS in this segment. */ | |
2778 | ||
2779 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2780 | return seg_reloc_count; | |
2781 | } | |
2782 | ||
2783 | #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */ | |
2784 | ||
2785 | void | |
2786 | number_to_chars_bigendian (buf, val, n) | |
2787 | char *buf; | |
2788 | valueT val; | |
2789 | int n; | |
2790 | { | |
2791 | if ((size_t) n > sizeof (val) || n <= 0) | |
2792 | abort (); | |
2793 | while (n--) | |
2794 | { | |
2795 | buf[n] = val & 0xff; | |
2796 | val >>= 8; | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | void | |
2801 | number_to_chars_littleendian (buf, val, n) | |
2802 | char *buf; | |
2803 | valueT val; | |
2804 | int n; | |
2805 | { | |
2806 | if ((size_t) n > sizeof (val) || n <= 0) | |
2807 | abort (); | |
2808 | while (n--) | |
2809 | { | |
2810 | *buf++ = val & 0xff; | |
2811 | val >>= 8; | |
2812 | } | |
2813 | } | |
2814 | ||
2815 | void | |
2816 | write_print_statistics (file) | |
2817 | FILE *file; | |
2818 | { | |
6d4d30bb | 2819 | fprintf (file, "fixups: %d\n", n_fixups); |
252b5132 RH |
2820 | } |
2821 | ||
2822 | /* for debugging */ | |
2823 | extern int indent_level; | |
2824 | ||
2825 | void | |
2826 | print_fixup (fixp) | |
2827 | fixS *fixp; | |
2828 | { | |
2829 | indent_level = 1; | |
2830 | fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line); | |
2831 | if (fixp->fx_pcrel) | |
2832 | fprintf (stderr, " pcrel"); | |
2833 | if (fixp->fx_pcrel_adjust) | |
2834 | fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust); | |
2835 | if (fixp->fx_im_disp) | |
2836 | { | |
2837 | #ifdef TC_NS32K | |
2838 | fprintf (stderr, " im_disp=%d", fixp->fx_im_disp); | |
2839 | #else | |
2840 | fprintf (stderr, " im_disp"); | |
2841 | #endif | |
2842 | } | |
2843 | if (fixp->fx_tcbit) | |
2844 | fprintf (stderr, " tcbit"); | |
2845 | if (fixp->fx_done) | |
2846 | fprintf (stderr, " done"); | |
2847 | fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx", | |
2848 | fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where, | |
2849 | (long) fixp->fx_offset, (long) fixp->fx_addnumber); | |
2850 | #ifdef BFD_ASSEMBLER | |
2851 | fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type), | |
2852 | fixp->fx_r_type); | |
2853 | #else | |
2854 | #ifdef NEED_FX_R_TYPE | |
2855 | fprintf (stderr, " r_type=%d", fixp->fx_r_type); | |
2856 | #endif | |
2857 | #endif | |
2858 | if (fixp->fx_addsy) | |
2859 | { | |
2860 | fprintf (stderr, "\n +<"); | |
2861 | print_symbol_value_1 (stderr, fixp->fx_addsy); | |
2862 | fprintf (stderr, ">"); | |
2863 | } | |
2864 | if (fixp->fx_subsy) | |
2865 | { | |
2866 | fprintf (stderr, "\n -<"); | |
2867 | print_symbol_value_1 (stderr, fixp->fx_subsy); | |
2868 | fprintf (stderr, ">"); | |
2869 | } | |
2870 | fprintf (stderr, "\n"); | |
2871 | #ifdef TC_FIX_DATA_PRINT | |
2872 | TC_FIX_DATA_PRINT (stderr, fixp); | |
2873 | #endif | |
2874 | } | |
2875 | ||
2876 | /* end of write.c */ |