Commit | Line | Data |
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fecd2382 | 1 | /* write.c - emit .o file |
43ca9aa6 | 2 | Copyright (C) 1986, 1987, 1990, 1991, 1992, 1993 Free Software Foundation, Inc. |
6efd877d | 3 | |
a39116f1 | 4 | This file is part of GAS, the GNU Assembler. |
6efd877d | 5 | |
a39116f1 RP |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
6efd877d | 10 | |
a39116f1 RP |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
6efd877d | 15 | |
a39116f1 RP |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
fecd2382 | 19 | |
c593cf41 | 20 | /* This thing should be set up to do byteordering correctly. But... */ |
fecd2382 RP |
21 | |
22 | #include "as.h" | |
fecd2382 RP |
23 | #include "subsegs.h" |
24 | #include "obstack.h" | |
25 | #include "output-file.h" | |
26 | ||
43ca9aa6 KR |
27 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop |
28 | instruction so that the disassembler does not choke on it. */ | |
6d5460ab RP |
29 | #ifndef NOP_OPCODE |
30 | #define NOP_OPCODE 0x00 | |
31 | #endif | |
32 | ||
335d35c8 JL |
33 | #ifndef TC_FORCE_RELOCATION |
34 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
35 | #endif | |
36 | ||
43ca9aa6 KR |
37 | #ifndef WORKING_DOT_WORD |
38 | extern CONST int md_short_jump_size; | |
39 | extern CONST int md_long_jump_size; | |
40 | #endif | |
41 | ||
42 | #ifndef BFD_ASSEMBLER | |
43 | ||
45432836 | 44 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
45 | struct frag *text_frag_root; |
46 | struct frag *data_frag_root; | |
47 | struct frag *bss_frag_root; | |
fecd2382 | 48 | |
09952cd9 KR |
49 | struct frag *text_last_frag; /* Last frag in segment. */ |
50 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 51 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 52 | #endif |
fecd2382 | 53 | |
80aab579 | 54 | #if ! defined (BFD_ASSEMBLER) && ! defined (BFD) |
fecd2382 | 55 | static object_headers headers; |
fecd2382 | 56 | static char *the_object_file; |
80aab579 ILT |
57 | #endif |
58 | ||
59 | long string_byte_count; | |
fecd2382 RP |
60 | char *next_object_file_charP; /* Tracks object file bytes. */ |
61 | ||
3eb802b5 | 62 | #ifndef OBJ_VMS |
fecd2382 | 63 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 64 | #endif |
fecd2382 | 65 | |
43ca9aa6 KR |
66 | #endif /* BFD_ASSEMBLER */ |
67 | ||
7a0405b9 | 68 | #ifdef BFD_ASSEMBLER |
b23f6743 | 69 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
70 | symbolS *add, symbolS *sub, |
71 | offsetT offset, int pcrel, | |
7a0405b9 | 72 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 73 | #else |
b23f6743 | 74 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
75 | symbolS *add, symbolS *sub, |
76 | offsetT offset, int pcrel, | |
77 | int r_type)); | |
5ac34ac3 | 78 | #endif |
80aab579 | 79 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
6efd877d | 80 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 81 | #endif |
d5364748 | 82 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
83 | |
84 | /* | |
85 | * fix_new() | |
86 | * | |
87 | * Create a fixS in obstack 'notes'. | |
88 | */ | |
5ac34ac3 ILT |
89 | static fixS * |
90 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
91 | r_type) | |
6efd877d KR |
92 | fragS *frag; /* Which frag? */ |
93 | int where; /* Where in that frag? */ | |
b23f6743 | 94 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 95 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 96 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 97 | offsetT offset; /* X_add_number. */ |
6efd877d | 98 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
99 | #ifdef BFD_ASSEMBLER |
100 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
101 | #else | |
6efd877d | 102 | int r_type; /* Relocation type */ |
43ca9aa6 | 103 | #endif |
fecd2382 | 104 | { |
6efd877d KR |
105 | fixS *fixP; |
106 | ||
107 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); | |
108 | ||
109 | fixP->fx_frag = frag; | |
110 | fixP->fx_where = where; | |
111 | fixP->fx_size = size; | |
112 | fixP->fx_addsy = add_symbol; | |
113 | fixP->fx_subsy = sub_symbol; | |
114 | fixP->fx_offset = offset; | |
115 | fixP->fx_pcrel = pcrel; | |
43ca9aa6 | 116 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 117 | fixP->fx_r_type = r_type; |
c593cf41 | 118 | #endif |
6efd877d KR |
119 | fixP->fx_im_disp = 0; |
120 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 121 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 122 | fixP->fx_addnumber = 0; |
20b39b6f | 123 | fixP->tc_fix_data = NULL; |
a58374d7 | 124 | fixP->fx_tcbit = 0; |
43ca9aa6 KR |
125 | |
126 | #ifdef TC_something | |
127 | fixP->fx_bsr = 0; | |
128 | #endif | |
43ca9aa6 | 129 | |
84fa9814 KR |
130 | as_where (&fixP->fx_file, &fixP->fx_line); |
131 | ||
43ca9aa6 KR |
132 | /* Usually, we want relocs sorted numerically, but while |
133 | comparing to older versions of gas that have relocs | |
134 | reverse sorted, it is convenient to have this compile | |
135 | time option. xoxorich. */ | |
136 | ||
137 | { | |
6efd877d | 138 | |
43ca9aa6 KR |
139 | #ifdef BFD_ASSEMBLER |
140 | fixS **seg_fix_rootP = & (seg_info (now_seg)->fix_root); | |
141 | fixS **seg_fix_tailP = & (seg_info (now_seg)->fix_tail); | |
142 | #endif | |
09952cd9 | 143 | |
f6e504fe | 144 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 145 | |
43ca9aa6 KR |
146 | fixP->fx_next = *seg_fix_rootP; |
147 | *seg_fix_rootP = fixP; | |
6efd877d | 148 | |
f6e504fe | 149 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 150 | |
43ca9aa6 | 151 | fixP->fx_next = NULL; |
6efd877d | 152 | |
43ca9aa6 KR |
153 | if (*seg_fix_tailP) |
154 | (*seg_fix_tailP)->fx_next = fixP; | |
155 | else | |
156 | *seg_fix_rootP = fixP; | |
157 | *seg_fix_tailP = fixP; | |
6efd877d | 158 | |
f6e504fe | 159 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 160 | |
43ca9aa6 KR |
161 | } |
162 | ||
163 | return fixP; | |
164 | } | |
165 | ||
5ac34ac3 ILT |
166 | /* Create a fixup relative to a symbol (plus a constant). */ |
167 | ||
168 | fixS * | |
169 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
170 | fragS *frag; /* Which frag? */ | |
171 | int where; /* Where in that frag? */ | |
172 | short int size; /* 1, 2, or 4 usually. */ | |
173 | symbolS *add_symbol; /* X_add_symbol. */ | |
174 | offsetT offset; /* X_add_number. */ | |
175 | int pcrel; /* TRUE if PC-relative relocation. */ | |
176 | #ifdef BFD_ASSEMBLER | |
177 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
178 | #else | |
179 | int r_type; /* Relocation type */ | |
180 | #endif | |
181 | { | |
182 | return fix_new_internal (frag, where, size, add_symbol, | |
183 | (symbolS *) NULL, offset, pcrel, r_type); | |
184 | } | |
185 | ||
186 | /* Create a fixup for an expression. Currently we only support fixups | |
187 | for difference expressions. That is itself more than most object | |
188 | file formats support anyhow. */ | |
189 | ||
190 | fixS * | |
191 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
192 | fragS *frag; /* Which frag? */ | |
193 | int where; /* Where in that frag? */ | |
194 | short int size; /* 1, 2, or 4 usually. */ | |
195 | expressionS *exp; /* Expression. */ | |
196 | int pcrel; /* TRUE if PC-relative relocation. */ | |
197 | #ifdef BFD_ASSEMBLER | |
198 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
199 | #else | |
200 | int r_type; /* Relocation type */ | |
201 | #endif | |
202 | { | |
203 | symbolS *add = NULL; | |
204 | symbolS *sub = NULL; | |
205 | offsetT off = 0; | |
206 | ||
207 | switch (exp->X_op) | |
208 | { | |
209 | case O_absent: | |
210 | break; | |
211 | ||
b23f6743 KR |
212 | case O_uminus: |
213 | sub = exp->X_add_symbol; | |
214 | off = exp->X_add_number; | |
215 | break; | |
216 | ||
5ac34ac3 ILT |
217 | case O_subtract: |
218 | sub = exp->X_op_symbol; | |
219 | /* Fall through. */ | |
220 | case O_symbol: | |
221 | add = exp->X_add_symbol; | |
222 | /* Fall through. */ | |
223 | case O_constant: | |
224 | off = exp->X_add_number; | |
225 | break; | |
226 | ||
227 | default: | |
228 | as_bad ("expression too complex for fixup"); | |
229 | } | |
230 | ||
231 | return fix_new_internal (frag, where, size, add, sub, off, | |
232 | pcrel, r_type); | |
233 | } | |
234 | ||
43ca9aa6 KR |
235 | /* Append a string onto another string, bumping the pointer along. */ |
236 | void | |
237 | append (charPP, fromP, length) | |
238 | char **charPP; | |
239 | char *fromP; | |
240 | unsigned long length; | |
241 | { | |
242 | /* Don't trust memcpy() of 0 chars. */ | |
243 | if (length == 0) | |
244 | return; | |
245 | ||
80aab579 | 246 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
247 | *charPP += length; |
248 | } | |
249 | ||
250 | #ifndef BFD_ASSEMBLER | |
251 | int section_alignment[SEG_MAXIMUM_ORDINAL]; | |
252 | #endif | |
253 | ||
254 | /* | |
255 | * This routine records the largest alignment seen for each segment. | |
256 | * If the beginning of the segment is aligned on the worst-case | |
257 | * boundary, all of the other alignments within it will work. At | |
258 | * least one object format really uses this info. | |
259 | */ | |
260 | void | |
261 | record_alignment (seg, align) | |
262 | /* Segment to which alignment pertains */ | |
263 | segT seg; | |
264 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
265 | boundary, etc.) */ | |
266 | int align; | |
267 | { | |
268 | #ifdef BFD_ASSEMBLER | |
269 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
270 | bfd_set_section_alignment (stdoutput, seg, align); | |
271 | #else | |
272 | if (align > section_alignment[(int) seg]) | |
273 | section_alignment[(int) seg] = align; | |
274 | #endif | |
275 | } | |
276 | ||
277 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) | |
278 | ||
279 | static fragS * | |
280 | chain_frchains_together_1 (section, frchp) | |
281 | segT section; | |
282 | struct frchain *frchp; | |
283 | { | |
284 | fragS dummy, *prev_frag = &dummy; | |
285 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) | |
286 | { | |
287 | prev_frag->fr_next = frchp->frch_root; | |
288 | prev_frag = frchp->frch_last; | |
289 | } | |
290 | prev_frag->fr_next = 0; | |
291 | return prev_frag; | |
292 | } | |
293 | ||
294 | #endif | |
295 | ||
296 | #ifdef BFD_ASSEMBLER | |
297 | ||
298 | static void | |
299 | chain_frchains_together (abfd, section, xxx) | |
300 | bfd *abfd; /* unused */ | |
301 | segT section; | |
a58374d7 | 302 | PTR xxx; /* unused */ |
43ca9aa6 | 303 | { |
f2f7d044 ILT |
304 | segment_info_type *info; |
305 | ||
306 | /* BFD may have introduced its own sections without using | |
307 | subseg_new, so it is possible that seg_info is NULL. */ | |
308 | info = seg_info (section); | |
309 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
310 | info->frchainP->frch_last |
311 | = chain_frchains_together_1 (section, info->frchainP); | |
43ca9aa6 KR |
312 | } |
313 | ||
314 | #endif | |
542e1629 | 315 | |
d5364748 | 316 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 317 | |
6efd877d KR |
318 | void |
319 | remove_subsegs (head, seg, root, last) | |
320 | frchainS *head; | |
321 | int seg; | |
322 | fragS **root; | |
323 | fragS **last; | |
65bfcf2e | 324 | { |
65bfcf2e | 325 | *root = head->frch_root; |
43ca9aa6 KR |
326 | *last = chain_frchains_together_1 (seg, head); |
327 | } | |
328 | ||
329 | #endif /* BFD */ | |
330 | ||
80aab579 ILT |
331 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
332 | ||
43ca9aa6 | 333 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
334 | static void |
335 | cvt_frag_to_fill (sec, fragP) | |
336 | segT sec; | |
43ca9aa6 | 337 | fragS *fragP; |
43ca9aa6 | 338 | #else |
58d4951d ILT |
339 | static void |
340 | cvt_frag_to_fill (headers, fragP) | |
341 | object_headers *headers; | |
342 | fragS *fragP; | |
43ca9aa6 | 343 | #endif |
58d4951d | 344 | { |
43ca9aa6 | 345 | switch (fragP->fr_type) |
6efd877d | 346 | { |
43ca9aa6 KR |
347 | case rs_align: |
348 | case rs_org: | |
349 | #ifdef HANDLE_ALIGN | |
350 | HANDLE_ALIGN (fragP); | |
351 | #endif | |
352 | fragP->fr_type = rs_fill; | |
353 | know (fragP->fr_var == 1); | |
354 | know (fragP->fr_next != NULL); | |
355 | ||
356 | fragP->fr_offset = (fragP->fr_next->fr_address | |
357 | - fragP->fr_address | |
358 | - fragP->fr_fix); | |
359 | break; | |
65bfcf2e | 360 | |
43ca9aa6 KR |
361 | case rs_fill: |
362 | break; | |
363 | ||
364 | case rs_machine_dependent: | |
365 | #ifdef BFD_ASSEMBLER | |
366 | md_convert_frag (stdoutput, sec, fragP); | |
367 | #else | |
368 | md_convert_frag (headers, fragP); | |
369 | #endif | |
370 | ||
d5364748 | 371 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
372 | |
373 | /* | |
374 | * After md_convert_frag, we make the frag into a ".space 0". | |
375 | * Md_convert_frag() should set up any fixSs and constants | |
376 | * required. | |
377 | */ | |
378 | frag_wane (fragP); | |
379 | break; | |
380 | ||
381 | #ifndef WORKING_DOT_WORD | |
382 | case rs_broken_word: | |
383 | { | |
384 | struct broken_word *lie; | |
385 | ||
386 | if (fragP->fr_subtype) | |
387 | { | |
388 | fragP->fr_fix += md_short_jump_size; | |
389 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
390 | lie && lie->dispfrag == fragP; | |
391 | lie = lie->next_broken_word) | |
392 | if (lie->added == 1) | |
393 | fragP->fr_fix += md_long_jump_size; | |
394 | } | |
395 | frag_wane (fragP); | |
396 | } | |
397 | break; | |
398 | #endif | |
399 | ||
400 | default: | |
401 | BAD_CASE (fragP->fr_type); | |
402 | break; | |
6efd877d | 403 | } |
65bfcf2e | 404 | } |
6efd877d | 405 | |
80aab579 ILT |
406 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
407 | ||
43ca9aa6 KR |
408 | #ifdef BFD_ASSEMBLER |
409 | static void | |
410 | relax_and_size_seg (abfd, sec, xxx) | |
411 | bfd *abfd; | |
412 | asection *sec; | |
a58374d7 | 413 | PTR xxx; |
43ca9aa6 KR |
414 | { |
415 | flagword flags; | |
13e9182d KR |
416 | fragS *fragp; |
417 | segment_info_type *seginfo; | |
418 | int x; | |
419 | valueT size, newsize; | |
43ca9aa6 KR |
420 | |
421 | flags = bfd_get_section_flags (abfd, sec); | |
422 | ||
13e9182d KR |
423 | seginfo = (segment_info_type *) bfd_get_section_userdata (abfd, sec); |
424 | if (seginfo && seginfo->frchainP) | |
43ca9aa6 | 425 | { |
13e9182d KR |
426 | relax_segment (seginfo->frchainP->frch_root, sec); |
427 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
428 | cvt_frag_to_fill (sec, fragp); | |
429 | for (fragp = seginfo->frchainP->frch_root; | |
430 | fragp->fr_next; | |
431 | fragp = fragp->fr_next) | |
432 | /* walk to last elt */; | |
433 | size = fragp->fr_address + fragp->fr_fix; | |
434 | } | |
435 | else | |
436 | size = 0; | |
a58374d7 ILT |
437 | |
438 | if (size > 0 && ! seginfo->bss) | |
439 | flags |= SEC_HAS_CONTENTS; | |
440 | ||
441 | /* @@ This is just an approximation. */ | |
5f6efd5a | 442 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
443 | flags |= SEC_RELOC; |
444 | else | |
445 | flags &= ~SEC_RELOC; | |
446 | x = bfd_set_section_flags (abfd, sec, flags); | |
447 | assert (x == true); | |
448 | ||
20b39b6f JL |
449 | newsize = md_section_align (sec, size); |
450 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
451 | assert (x == true); |
452 | ||
453 | /* If the size had to be rounded up, add some padding in the last | |
454 | non-empty frag. */ | |
13e9182d KR |
455 | assert (newsize >= size); |
456 | if (size != newsize) | |
457 | { | |
458 | fragS *last = seginfo->frchainP->frch_last; | |
459 | fragp = seginfo->frchainP->frch_root; | |
460 | while (fragp->fr_next != last) | |
461 | fragp = fragp->fr_next; | |
462 | last->fr_address = size; | |
463 | fragp->fr_offset += newsize - size; | |
464 | } | |
465 | ||
43ca9aa6 KR |
466 | #ifdef tc_frob_section |
467 | tc_frob_section (sec); | |
468 | #endif | |
469 | #ifdef obj_frob_section | |
470 | obj_frob_section (sec); | |
471 | #endif | |
472 | } | |
473 | ||
d5364748 KR |
474 | #ifdef DEBUG2 |
475 | static void | |
476 | dump_section_relocs (abfd, sec, stream_) | |
477 | bfd *abfd; | |
478 | asection *sec; | |
479 | char *stream_; | |
480 | { | |
481 | FILE *stream = (FILE *) stream_; | |
482 | segment_info_type *seginfo = seg_info (sec); | |
483 | fixS *fixp = seginfo->fix_root; | |
484 | ||
485 | if (!fixp) | |
486 | return; | |
487 | ||
488 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
489 | while (fixp) | |
490 | { | |
491 | symbolS *s = fixp->fx_addsy; | |
492 | if (s) | |
493 | fprintf (stream, " %08x: %s(%s+%x)+%x\n", fixp, | |
494 | S_GET_NAME (s), s->bsym->section->name, | |
495 | S_GET_VALUE (s), fixp->fx_offset); | |
496 | else | |
497 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
498 | fixp = fixp->fx_next; | |
499 | } | |
500 | } | |
501 | #else | |
502 | #define dump_section_relocs(ABFD,SEC,STREAM) (void)(ABFD,SEC,STREAM) | |
503 | #endif | |
504 | ||
505 | static void | |
506 | adjust_reloc_syms (abfd, sec, xxx) | |
507 | bfd *abfd; | |
508 | asection *sec; | |
a58374d7 | 509 | PTR xxx; |
d5364748 KR |
510 | { |
511 | segment_info_type *seginfo = seg_info (sec); | |
512 | fixS *fixp; | |
513 | ||
514 | if (seginfo == NULL) | |
515 | return; | |
516 | ||
517 | dump_section_relocs (abfd, sec, stderr); | |
518 | ||
519 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
520 | if (fixp->fx_addsy) | |
521 | { | |
522 | symbolS *sym = fixp->fx_addsy; | |
523 | asection *symsec = sym->bsym->section; | |
524 | segment_info_type *symseginfo = seg_info (symsec); | |
525 | ||
a58374d7 ILT |
526 | /* If it's one of these sections, assume the symbol is |
527 | definitely going to be output. The code in | |
528 | md_estimate_size_before_relax in tc-mips.c uses this test | |
529 | as well, so if you change this code you should look at that | |
530 | code. */ | |
d5364748 KR |
531 | if (symsec == &bfd_und_section |
532 | || symsec == &bfd_abs_section | |
533 | || bfd_is_com_section (symsec)) | |
80aab579 ILT |
534 | { |
535 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
536 | continue; | |
537 | } | |
d5364748 KR |
538 | |
539 | /* Since we're reducing to section symbols, don't attempt to reduce | |
540 | anything that's already using one. */ | |
541 | if (sym->bsym == symsec->symbol) | |
80aab579 ILT |
542 | { |
543 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
544 | continue; | |
545 | } | |
d5364748 KR |
546 | |
547 | /* Is there some other reason we can't adjust this one? (E.g., | |
548 | call/bal links in i960-bout symbols.) */ | |
549 | #ifdef obj_fix_adjustable | |
550 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
551 | { |
552 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
553 | continue; | |
554 | } | |
d5364748 | 555 | #endif |
efa0c22e KR |
556 | |
557 | /* Is there some other (target cpu dependent) reason we can't adjust | |
558 | this one? (E.g. relocations involving function addresses on | |
559 | the PA. */ | |
560 | #ifdef tc_fix_adjustable | |
561 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
562 | { |
563 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
564 | continue; | |
565 | } | |
efa0c22e KR |
566 | #endif |
567 | ||
d5364748 KR |
568 | /* If the section symbol isn't going to be output, the relocs |
569 | at least should still work. If not, figure out what to do | |
570 | when we run into that case. */ | |
571 | fixp->fx_offset += S_GET_VALUE (sym); | |
572 | if (sym->sy_frag) | |
573 | fixp->fx_offset += sym->sy_frag->fr_address; | |
574 | if (symseginfo->sym) | |
575 | fixp->fx_addsy = symseginfo->sym; | |
576 | else | |
577 | { | |
578 | fixp->fx_addsy = symbol_find (symsec->name); | |
579 | if (!fixp->fx_addsy) | |
580 | { | |
581 | fixp->fx_addsy = symbol_make (symsec->name); | |
582 | fixp->fx_addsy->bsym = symsec->symbol; | |
583 | } | |
584 | symseginfo->sym = fixp->fx_addsy; | |
585 | } | |
80aab579 | 586 | fixp->fx_addsy->sy_used_in_reloc = 1; |
d5364748 KR |
587 | } |
588 | ||
589 | dump_section_relocs (abfd, sec, stderr); | |
590 | } | |
591 | ||
43ca9aa6 | 592 | static void |
8d6c34a1 | 593 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
594 | bfd *abfd; |
595 | asection *sec; | |
a58374d7 | 596 | PTR xxx; |
43ca9aa6 KR |
597 | { |
598 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
599 | int i; |
600 | unsigned int n; | |
43ca9aa6 KR |
601 | arelent **relocs; |
602 | fixS *fixp; | |
603 | ||
d5364748 KR |
604 | /* If seginfo is NULL, we did not create this section; don't do |
605 | anything with it. */ | |
606 | if (seginfo == NULL) | |
43ca9aa6 KR |
607 | return; |
608 | ||
609 | fixup_segment (seginfo->fix_root, sec); | |
610 | ||
3d3c5039 | 611 | n = 0; |
d5364748 KR |
612 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
613 | n++; | |
43ca9aa6 | 614 | |
d5364748 | 615 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 616 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
617 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
618 | n * sizeof (arelent *)); | |
8d6c34a1 | 619 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 620 | |
3d3c5039 ILT |
621 | i = 0; |
622 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
623 | { | |
624 | arelent *reloc; | |
3d3c5039 ILT |
625 | char *data; |
626 | bfd_reloc_status_type s; | |
627 | ||
628 | if (fixp->fx_addsy == 0) | |
629 | { | |
630 | /* @@ Need some other flag to indicate which have already | |
631 | been performed... */ | |
632 | n--; | |
633 | continue; | |
634 | } | |
635 | reloc = tc_gen_reloc (sec, fixp); | |
636 | if (!reloc) | |
637 | { | |
638 | n--; | |
639 | continue; | |
640 | } | |
641 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 642 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
643 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
644 | abort (); | |
335d35c8 | 645 | |
84fa9814 KR |
646 | if (reloc->howto->partial_inplace == false |
647 | && reloc->howto->pcrel_offset == true | |
648 | && reloc->howto->pc_relative == true) | |
649 | { | |
650 | /* bfd_perform_relocation screws this up */ | |
651 | reloc->addend += reloc->address; | |
652 | } | |
335d35c8 JL |
653 | /* Pass bogus address so that when bfd_perform_relocation adds |
654 | `address' back in, it'll come up with `data', which is where | |
655 | we want it to operate. */ | |
3d3c5039 ILT |
656 | s = bfd_perform_relocation (stdoutput, reloc, data - reloc->address, |
657 | sec, stdoutput); | |
658 | switch (s) | |
659 | { | |
660 | case bfd_reloc_ok: | |
661 | break; | |
662 | default: | |
663 | as_fatal ("bad return from bfd_perform_relocation"); | |
664 | } | |
665 | relocs[i++] = reloc; | |
666 | } | |
d5364748 KR |
667 | #else |
668 | n = n * MAX_RELOC_EXPANSION; | |
669 | /* Set up reloc information as well. */ | |
670 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
671 | n * sizeof (arelent *)); | |
672 | ||
673 | i = 0; | |
674 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
675 | { | |
676 | arelent **reloc; | |
d5364748 KR |
677 | char *data; |
678 | bfd_reloc_status_type s; | |
679 | int j; | |
680 | ||
681 | if (fixp->fx_addsy == 0) | |
682 | { | |
683 | /* @@ Need some other flag to indicate which have already | |
684 | been performed... */ | |
685 | n--; | |
686 | continue; | |
687 | } | |
688 | reloc = tc_gen_reloc (sec, fixp); | |
689 | ||
690 | for (j = 0; reloc[j]; j++) | |
691 | { | |
692 | relocs[i++] = reloc[j]; | |
693 | assert(i <= n); | |
694 | } | |
695 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 696 | if (fixp->fx_where + fixp->fx_size |
d5364748 KR |
697 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
698 | abort (); | |
699 | for (j = 0; reloc[j]; j++) | |
700 | { | |
a58374d7 ILT |
701 | s = bfd_perform_relocation (stdoutput, reloc[j], |
702 | data - reloc[0]->address, | |
d5364748 KR |
703 | sec, stdoutput); |
704 | switch (s) | |
705 | { | |
706 | case bfd_reloc_ok: | |
707 | break; | |
708 | default: | |
709 | as_fatal ("bad return from bfd_perform_relocation"); | |
710 | } | |
711 | } | |
712 | } | |
713 | n = i; | |
714 | #endif | |
715 | ||
3d3c5039 ILT |
716 | if (n) |
717 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
718 | else |
719 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
720 | (bfd_get_section_flags (abfd, sec) |
721 | & (flagword) ~SEC_RELOC)); | |
d5364748 KR |
722 | #ifdef DEBUG2 |
723 | { | |
724 | int i; | |
725 | arelent *r; | |
726 | asymbol *s; | |
727 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
728 | for (i = 0; i < n; i++) | |
729 | { | |
730 | r = relocs[i]; | |
731 | s = *r->sym_ptr_ptr; | |
732 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
733 | i, r, r->address, s->name, r->addend); | |
734 | } | |
735 | } | |
736 | #endif | |
8d6c34a1 | 737 | } |
d5364748 | 738 | |
8d6c34a1 KR |
739 | static void |
740 | write_contents (abfd, sec, xxx) | |
741 | bfd *abfd; | |
742 | asection *sec; | |
a58374d7 | 743 | PTR xxx; |
8d6c34a1 KR |
744 | { |
745 | segment_info_type *seginfo = seg_info (sec); | |
746 | unsigned long offset = 0; | |
80aab579 | 747 | fragS *f; |
3d3c5039 ILT |
748 | |
749 | /* Write out the frags. */ | |
f37449aa ILT |
750 | if (seginfo == NULL |
751 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
752 | return; |
753 | ||
80aab579 ILT |
754 | for (f = seginfo->frchainP->frch_root; |
755 | f; | |
756 | f = f->fr_next) | |
43ca9aa6 KR |
757 | { |
758 | int x; | |
759 | unsigned long fill_size; | |
760 | char *fill_literal; | |
761 | long count; | |
762 | ||
80aab579 ILT |
763 | assert (f->fr_type == rs_fill); |
764 | if (f->fr_fix) | |
43ca9aa6 KR |
765 | { |
766 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
767 | f->fr_literal, (file_ptr) offset, |
768 | (bfd_size_type) f->fr_fix); | |
43ca9aa6 | 769 | assert (x == true); |
80aab579 | 770 | offset += f->fr_fix; |
43ca9aa6 | 771 | } |
80aab579 ILT |
772 | fill_literal = f->fr_literal + f->fr_fix; |
773 | fill_size = f->fr_var; | |
774 | count = f->fr_offset; | |
43ca9aa6 KR |
775 | assert (count >= 0); |
776 | if (fill_size && count) | |
777 | while (count--) | |
778 | { | |
779 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 | 780 | fill_literal, (file_ptr) offset, |
d5364748 | 781 | (bfd_size_type) fill_size); |
43ca9aa6 KR |
782 | assert (x == true); |
783 | offset += fill_size; | |
784 | } | |
785 | } | |
43ca9aa6 KR |
786 | } |
787 | #endif | |
788 | ||
80aab579 | 789 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
790 | static void |
791 | merge_data_into_text () | |
792 | { | |
4064305e | 793 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
794 | seg_info (text_section)->frchainP->frch_last->fr_next = |
795 | seg_info (data_section)->frchainP->frch_root; | |
796 | seg_info (text_section)->frchainP->frch_last = | |
797 | seg_info (data_section)->frchainP->frch_last; | |
798 | seg_info (data_section)->frchainP = 0; | |
799 | #else | |
800 | fixS *tmp; | |
801 | ||
802 | text_last_frag->fr_next = data_frag_root; | |
803 | text_last_frag = data_last_frag; | |
804 | data_last_frag = NULL; | |
805 | data_frag_root = NULL; | |
806 | if (text_fix_root) | |
807 | { | |
808 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
809 | tmp->fx_next = data_fix_root; | |
810 | text_fix_tail = data_fix_tail; | |
811 | } | |
812 | else | |
813 | text_fix_root = data_fix_root; | |
814 | data_fix_root = NULL; | |
815 | #endif | |
816 | } | |
80aab579 | 817 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
818 | |
819 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
820 | static void | |
821 | relax_and_size_all_segments () | |
822 | { | |
13e9182d KR |
823 | fragS *fragP; |
824 | ||
b23f6743 KR |
825 | relax_segment (text_frag_root, SEG_TEXT); |
826 | relax_segment (data_frag_root, SEG_DATA); | |
827 | relax_segment (bss_frag_root, SEG_BSS); | |
828 | /* | |
829 | * Now the addresses of frags are correct within the segment. | |
830 | */ | |
831 | ||
832 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
833 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
834 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
835 | ||
836 | /* | |
837 | * Join the 2 segments into 1 huge segment. | |
838 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
839 | * Then join the data frags after the text frags. | |
840 | * | |
841 | * Determine a_data [length of data segment]. | |
842 | */ | |
843 | if (data_frag_root) | |
844 | { | |
845 | register relax_addressT slide; | |
846 | ||
847 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
848 | ||
849 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
850 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
851 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
852 | #ifdef OBJ_BOUT | |
853 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
854 | /* For b.out: If the data section has a strict alignment | |
855 | requirement, its load address in the .o file will be | |
856 | rounded up from the size of the text section. These | |
857 | two values are *not* the same! Similarly for the bss | |
858 | section.... */ | |
859 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
860 | #endif | |
861 | ||
862 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
863 | { | |
864 | fragP->fr_address += slide; | |
865 | } /* for each data frag */ | |
866 | ||
867 | know (text_last_frag != 0); | |
868 | text_last_frag->fr_next = data_frag_root; | |
869 | } | |
870 | else | |
871 | { | |
872 | H_SET_DATA_SIZE (&headers, 0); | |
873 | } | |
874 | ||
875 | #ifdef OBJ_BOUT | |
876 | /* See above comments on b.out data section address. */ | |
877 | { | |
878 | long bss_vma; | |
879 | if (data_last_frag == 0) | |
880 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
881 | else | |
882 | bss_vma = data_last_frag->fr_address; | |
883 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
884 | bss_address_frag.fr_address = bss_vma; | |
885 | } | |
886 | #else /* ! OBJ_BOUT */ | |
887 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
888 | H_GET_DATA_SIZE (&headers)); | |
889 | ||
efa0c22e | 890 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
891 | |
892 | /* Slide all the frags */ | |
893 | if (bss_frag_root) | |
894 | { | |
895 | relax_addressT slide = bss_address_frag.fr_address; | |
896 | ||
897 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
898 | { | |
899 | fragP->fr_address += slide; | |
900 | } /* for each bss frag */ | |
901 | } | |
902 | ||
b23f6743 KR |
903 | if (bss_last_frag) |
904 | H_SET_BSS_SIZE (&headers, | |
905 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
906 | else | |
907 | H_SET_BSS_SIZE (&headers, 0); | |
908 | } | |
909 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
910 | ||
d5364748 KR |
911 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
912 | ||
6efd877d KR |
913 | void |
914 | write_object_file () | |
45432836 | 915 | { |
6efd877d | 916 | register struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 917 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
6efd877d | 918 | register fragS *fragP; /* Track along all frags. */ |
58d4951d | 919 | #endif |
d5364748 | 920 | #if !defined (BFD_ASSEMBLER) && !defined (OBJ_VMS) |
6efd877d | 921 | long object_file_size; |
d5364748 | 922 | #endif |
6efd877d | 923 | |
43ca9aa6 KR |
924 | /* Do we really want to write it? */ |
925 | { | |
926 | int n_warns, n_errs; | |
927 | n_warns = had_warnings (); | |
928 | n_errs = had_errors (); | |
929 | /* The -Z flag indicates that an object file should be generated, | |
930 | regardless of warnings and errors. */ | |
931 | if (flagseen['Z']) | |
932 | { | |
933 | if (n_warns || n_errs) | |
934 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
935 | n_errs, n_errs == 1 ? "" : "s", | |
936 | n_warns, n_warns == 1 ? "" : "s"); | |
937 | } | |
938 | else | |
939 | { | |
940 | if (n_errs) | |
941 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
942 | n_errs, n_errs == 1 ? "" : "s", | |
943 | n_warns, n_warns == 1 ? "" : "s"); | |
944 | } | |
945 | } | |
946 | ||
3eb802b5 | 947 | #ifdef OBJ_VMS |
6efd877d | 948 | /* |
3eb802b5 ILT |
949 | * Under VMS we try to be compatible with VAX-11 "C". Thus, we |
950 | * call a routine to check for the definition of the procedure | |
951 | * "_main", and if so -- fix it up so that it can be program | |
952 | * entry point. | |
953 | */ | |
6efd877d | 954 | VMS_Check_For_Main (); |
fecd2382 | 955 | #endif /* VMS */ |
43ca9aa6 KR |
956 | |
957 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
958 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
959 | frag that requires least thought. ".align" frags like to have a | |
960 | following frag since that makes calculating their intended length | |
961 | trivial. | |
962 | ||
963 | @@ Is this really necessary?? */ | |
3eb802b5 | 964 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 965 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 966 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 967 | #else |
f2f7d044 | 968 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 969 | #endif |
3eb802b5 | 970 | #endif |
6efd877d KR |
971 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
972 | { | |
43ca9aa6 | 973 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 974 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
975 | /* frag_align will have left a new frag. |
976 | Use this last frag for an empty ".fill". | |
977 | ||
978 | For this segment ... | |
979 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
980 | frag_wane (frag_now); |
981 | frag_now->fr_fix = 0; | |
982 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 983 | } |
6efd877d | 984 | |
43ca9aa6 KR |
985 | /* From now on, we don't care about sub-segments. Build one frag chain |
986 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 987 | |
43ca9aa6 KR |
988 | #ifdef BFD_ASSEMBLER |
989 | /* Remove the sections created by gas for its own purposes. */ | |
990 | { | |
991 | asection **seclist, *sec; | |
992 | seclist = &stdoutput->sections; | |
993 | while (seclist && *seclist) | |
994 | { | |
995 | sec = *seclist; | |
5ac34ac3 | 996 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
997 | { |
998 | sec = sec->next; | |
999 | *seclist = sec; | |
1000 | stdoutput->section_count--; | |
1001 | if (!sec) | |
1002 | break; | |
1003 | } | |
1004 | if (*seclist) | |
1005 | seclist = &(*seclist)->next; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1010 | #else | |
6efd877d KR |
1011 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1012 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1013 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1014 | #endif |
6efd877d | 1015 | |
43ca9aa6 KR |
1016 | /* We have two segments. If user gave -R flag, then we must put the |
1017 | data frags into the text segment. Do this before relaxing so | |
1018 | we know to take advantage of -R and make shorter addresses. */ | |
1019 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
6efd877d KR |
1020 | if (flagseen['R']) |
1021 | { | |
b23f6743 | 1022 | merge_data_into_text (); |
6efd877d KR |
1023 | } |
1024 | #endif | |
43ca9aa6 KR |
1025 | |
1026 | #ifdef BFD_ASSEMBLER | |
1027 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1028 | #else | |
b23f6743 | 1029 | relax_and_size_all_segments (); |
43ca9aa6 | 1030 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1031 | |
43ca9aa6 | 1032 | #ifndef BFD_ASSEMBLER |
6efd877d | 1033 | /* |
7f2cb270 KR |
1034 | * |
1035 | * Crawl the symbol chain. | |
1036 | * | |
1037 | * For each symbol whose value depends on a frag, take the address of | |
1038 | * that frag and subsume it into the value of the symbol. | |
1039 | * After this, there is just one way to lookup a symbol value. | |
1040 | * Values are left in their final state for object file emission. | |
1041 | * We adjust the values of 'L' local symbols, even if we do | |
1042 | * not intend to emit them to the object file, because their values | |
1043 | * are needed for fix-ups. | |
1044 | * | |
1045 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1046 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1047 | * | |
1048 | * Count the remaining symbols. | |
1049 | * Assign a symbol number to each symbol. | |
1050 | * Count the number of string-table chars we will emit. | |
1051 | * Put this info into the headers as appropriate. | |
1052 | * | |
1053 | */ | |
6efd877d KR |
1054 | know (zero_address_frag.fr_address == 0); |
1055 | string_byte_count = sizeof (string_byte_count); | |
1056 | ||
1057 | obj_crawl_symbol_chain (&headers); | |
1058 | ||
1059 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1060 | string_byte_count = 0; |
6efd877d KR |
1061 | |
1062 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1063 | ||
1064 | /* | |
7f2cb270 KR |
1065 | * Addresses of frags now reflect addresses we use in the object file. |
1066 | * Symbol values are correct. | |
1067 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1068 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1069 | */ | |
6efd877d KR |
1070 | subseg_change (SEG_TEXT, 0); |
1071 | ||
1072 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1073 | { | |
43ca9aa6 | 1074 | cvt_frag_to_fill (&headers, fragP); |
6efd877d | 1075 | |
43ca9aa6 KR |
1076 | /* Some assert macros don't work with # directives mixed in. */ |
1077 | #ifndef NDEBUG | |
1078 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1079 | #ifdef OBJ_BOUT |
43ca9aa6 | 1080 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1081 | #endif |
6efd877d | 1082 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1083 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1084 | abort (); | |
1085 | #endif | |
1086 | } | |
1087 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1088 | |
fecd2382 | 1089 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1090 | { |
1091 | struct broken_word *lie; | |
1092 | struct broken_word **prevP; | |
1093 | ||
1094 | prevP = &broken_words; | |
1095 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1096 | if (!lie->added) | |
a39116f1 | 1097 | { |
5ac34ac3 ILT |
1098 | expressionS exp; |
1099 | ||
1100 | exp.X_op = O_subtract; | |
1101 | exp.X_add_symbol = lie->add; | |
1102 | exp.X_op_symbol = lie->sub; | |
1103 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1104 | #ifdef BFD_ASSEMBLER |
5ac34ac3 ILT |
1105 | fix_new_exp (lie->frag, |
1106 | lie->word_goes_here - lie->frag->fr_literal, | |
1107 | 2, &exp, 0, BFD_RELOC_NONE); | |
43ca9aa6 KR |
1108 | #else |
1109 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1110 | fix_new_exp (lie->frag, |
1111 | lie->word_goes_here - lie->frag->fr_literal, | |
1112 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1113 | #else |
fecd2382 | 1114 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1115 | fix_new_ns32k_exp (lie->frag, |
1116 | lie->word_goes_here - lie->frag->fr_literal, | |
1117 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1118 | #else |
5ac34ac3 ILT |
1119 | fix_new_exp (lie->frag, |
1120 | lie->word_goes_here - lie->frag->fr_literal, | |
1121 | 2, &exp, 0, 0); | |
fecd2382 | 1122 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1123 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1124 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1125 | *prevP = lie->next_broken_word; |
a39116f1 | 1126 | } |
6efd877d KR |
1127 | else |
1128 | prevP = &(lie->next_broken_word); | |
1129 | ||
1130 | for (lie = broken_words; lie;) | |
1131 | { | |
1132 | struct broken_word *untruth; | |
1133 | char *table_ptr; | |
d5364748 KR |
1134 | addressT table_addr; |
1135 | addressT from_addr, to_addr; | |
6efd877d KR |
1136 | int n, m; |
1137 | ||
6efd877d KR |
1138 | fragP = lie->dispfrag; |
1139 | ||
43ca9aa6 | 1140 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1141 | n = 0; |
1142 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1143 | if (untruth->added == 1) | |
1144 | n++; | |
1145 | ||
1146 | table_ptr = lie->dispfrag->fr_opcode; | |
1147 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1148 | /* Create the jump around the long jumps. This is a short |
1149 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1150 | from_addr = table_addr; |
1151 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1152 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1153 | table_ptr += md_short_jump_size; | |
1154 | table_addr += md_short_jump_size; | |
1155 | ||
1156 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1157 | { | |
1158 | if (lie->added == 2) | |
1159 | continue; | |
1160 | /* Patch the jump table */ | |
1161 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1162 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
6efd877d KR |
1163 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1164 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1165 | { | |
1166 | if (untruth->use_jump == lie) | |
1167 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1168 | } | |
1169 | ||
1170 | /* Install the long jump */ | |
1171 | /* this is a long jump from table_ptr+0 to the final target */ | |
1172 | from_addr = table_addr; | |
1173 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
1174 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1175 | table_ptr += md_long_jump_size; | |
1176 | table_addr += md_long_jump_size; | |
1177 | } | |
1178 | } | |
1179 | } | |
fecd2382 | 1180 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1181 | |
43ca9aa6 | 1182 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1183 | #ifndef OBJ_VMS |
6efd877d KR |
1184 | { /* not vms */ |
1185 | /* | |
3eb802b5 ILT |
1186 | * Scan every FixS performing fixups. We had to wait until now to do |
1187 | * this because md_convert_frag() may have made some fixSs. | |
1188 | */ | |
6efd877d KR |
1189 | int trsize, drsize; |
1190 | ||
1191 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1192 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1193 | subseg_change (SEG_DATA, 0); |
d5364748 | 1194 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1195 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1196 | ||
1197 | /* FIXME move this stuff into the pre-write-hook */ | |
1198 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1199 | H_SET_ENTRY_POINT (&headers, 0); | |
1200 | ||
1201 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1202 | |
1203 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1204 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1205 | ||
1206 | output_file_create (out_file_name); | |
1207 | ||
1208 | obj_header_append (&next_object_file_charP, &headers); | |
1209 | ||
1210 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1211 | ||
1212 | /* | |
43ca9aa6 KR |
1213 | * Emit code. |
1214 | */ | |
6efd877d KR |
1215 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1216 | { | |
1217 | register long count; | |
1218 | register char *fill_literal; | |
1219 | register long fill_size; | |
1220 | ||
1221 | know (fragP->fr_type == rs_fill); | |
1222 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1223 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1224 | fill_size = fragP->fr_var; | |
1225 | know (fragP->fr_offset >= 0); | |
1226 | ||
1227 | for (count = fragP->fr_offset; count; count--) | |
1228 | { | |
1229 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1230 | } /* for each */ | |
1231 | ||
1232 | } /* for each code frag. */ | |
1233 | ||
1234 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1235 | ||
1236 | /* | |
43ca9aa6 KR |
1237 | * Emit relocations. |
1238 | */ | |
6efd877d KR |
1239 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
1240 | 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))); | |
fecd2382 | 1241 | #ifdef TC_I960 |
6efd877d | 1242 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1243 | * first data fragment, not end of last text fragment: alignment of the |
1244 | * start of the data segment may place a gap between the segments. | |
1245 | */ | |
6efd877d | 1246 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1247 | #else /* TC_I960 */ |
6efd877d | 1248 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1249 | #endif /* TC_I960 */ |
6efd877d KR |
1250 | |
1251 | 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))); | |
1252 | ||
1253 | /* | |
43ca9aa6 KR |
1254 | * Emit line number entries. |
1255 | */ | |
6efd877d KR |
1256 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1257 | 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))); | |
1258 | ||
1259 | /* | |
3eb802b5 ILT |
1260 | * Emit symbols. |
1261 | */ | |
6efd877d KR |
1262 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1263 | 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))); | |
1264 | ||
1265 | /* | |
3eb802b5 ILT |
1266 | * Emit strings. |
1267 | */ | |
6efd877d KR |
1268 | |
1269 | if (string_byte_count > 0) | |
1270 | { | |
1271 | obj_emit_strings (&next_object_file_charP); | |
1272 | } /* only if we have a string table */ | |
1273 | ||
45432836 | 1274 | #ifdef BFD_HEADERS |
6efd877d KR |
1275 | bfd_seek (stdoutput, 0, 0); |
1276 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1277 | #else |
6efd877d KR |
1278 | |
1279 | /* Write the data to the file */ | |
1280 | output_file_append (the_object_file, object_file_size, out_file_name); | |
45432836 | 1281 | #endif |
6efd877d KR |
1282 | |
1283 | output_file_close (out_file_name); | |
1284 | } /* non vms output */ | |
1285 | #else /* VMS */ | |
1286 | /* | |
3eb802b5 ILT |
1287 | * Now do the VMS-dependent part of writing the object file |
1288 | */ | |
85825401 ILT |
1289 | VMS_write_object_file (H_GET_TEXT_SIZE (&headers), |
1290 | H_GET_DATA_SIZE (&headers), | |
1291 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1292 | text_frag_root, data_frag_root); |
6efd877d | 1293 | #endif /* VMS */ |
43ca9aa6 | 1294 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1295 | |
d5364748 KR |
1296 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1297 | ||
43ca9aa6 KR |
1298 | /* Set up symbol table, and write it out. */ |
1299 | if (symbol_rootP) | |
1300 | { | |
80aab579 ILT |
1301 | unsigned int i = 0; |
1302 | unsigned int n; | |
43ca9aa6 KR |
1303 | symbolS *symp; |
1304 | ||
1305 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1306 | { | |
5868b1fe ILT |
1307 | if (! symp->sy_resolved) |
1308 | { | |
5ac34ac3 | 1309 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1310 | { |
1311 | /* This is the normal case; skip the call. */ | |
1312 | S_SET_VALUE (symp, | |
1313 | (S_GET_VALUE (symp) | |
1314 | + symp->sy_frag->fr_address)); | |
1315 | symp->sy_resolved = 1; | |
1316 | } | |
1317 | else | |
1318 | resolve_symbol_value (symp); | |
1319 | } | |
1320 | ||
43ca9aa6 KR |
1321 | /* So far, common symbols have been treated like undefined symbols. |
1322 | Put them in the common section now. */ | |
1323 | if (S_IS_DEFINED (symp) == 0 | |
1324 | && S_GET_VALUE (symp) != 0) | |
1325 | S_SET_SEGMENT (symp, &bfd_com_section); | |
1326 | #if 0 | |
5868b1fe | 1327 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1328 | S_GET_NAME (symp), symp, |
1329 | S_GET_VALUE (symp), | |
d5364748 | 1330 | symp->bsym->flags, |
43ca9aa6 KR |
1331 | segment_name (symp->bsym->section)); |
1332 | #endif | |
335d35c8 | 1333 | |
80aab579 | 1334 | #ifdef obj_frob_symbol |
335d35c8 JL |
1335 | { |
1336 | int punt = 0; | |
1337 | obj_frob_symbol (symp, punt); | |
1338 | if (punt) | |
1339 | goto punt_it; | |
1340 | } | |
43ca9aa6 KR |
1341 | #endif |
1342 | #ifdef tc_frob_symbol | |
335d35c8 JL |
1343 | { |
1344 | int punt = 0; | |
1345 | tc_frob_symbol (symp, punt); | |
1346 | if (punt) | |
1347 | goto punt_it; | |
1348 | } | |
43ca9aa6 | 1349 | #endif |
80aab579 | 1350 | |
43ca9aa6 KR |
1351 | /* If we don't want to keep this symbol, splice it out of the |
1352 | chain now. */ | |
335d35c8 | 1353 | if (S_IS_LOCAL (symp)) |
43ca9aa6 | 1354 | { |
43ca9aa6 | 1355 | punt_it: |
335d35c8 JL |
1356 | if (! symp->sy_used_in_reloc) |
1357 | { | |
1358 | symbolS *prev, *next; | |
1359 | prev = symbol_previous (symp); | |
1360 | next = symbol_next (symp); | |
b23f6743 | 1361 | #ifdef DEBUG_SYMS |
335d35c8 | 1362 | verify_symbol_chain_2 (symp); |
43ca9aa6 | 1363 | #endif |
335d35c8 JL |
1364 | if (prev) |
1365 | { | |
1366 | symbol_next (prev) = next; | |
1367 | symp = prev; | |
1368 | } | |
1369 | else if (symp == symbol_rootP) | |
1370 | symbol_rootP = next; | |
1371 | else | |
1372 | abort (); | |
1373 | if (next) | |
1374 | symbol_previous (next) = prev; | |
1375 | else | |
1376 | symbol_lastP = prev; | |
b23f6743 | 1377 | #ifdef DEBUG_SYMS |
335d35c8 JL |
1378 | if (prev) |
1379 | verify_symbol_chain_2 (prev); | |
1380 | else if (next) | |
1381 | verify_symbol_chain_2 (next); | |
45432836 | 1382 | #endif |
335d35c8 JL |
1383 | continue; |
1384 | } | |
43ca9aa6 | 1385 | } |
85051959 | 1386 | |
80aab579 ILT |
1387 | /* Make sure we really got a value for the symbol. */ |
1388 | if (! symp->sy_resolved) | |
1389 | { | |
1390 | as_bad ("can't resolve value for symbol \"%s\"", | |
1391 | S_GET_NAME (symp)); | |
1392 | symp->sy_resolved = 1; | |
1393 | } | |
1394 | ||
85051959 ILT |
1395 | /* Set the value into the BFD symbol. Up til now the value |
1396 | has only been kept in the gas symbolS struct. */ | |
1397 | symp->bsym->value = S_GET_VALUE (symp); | |
1398 | ||
43ca9aa6 KR |
1399 | i++; |
1400 | } | |
1401 | n = i; | |
1402 | if (n) | |
1403 | { | |
1404 | asymbol **asympp; | |
1405 | boolean result; | |
d5364748 | 1406 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); |
43ca9aa6 | 1407 | |
d5364748 KR |
1408 | asympp = (asymbol **) bfd_alloc (stdoutput, |
1409 | n * sizeof (asymbol *)); | |
43ca9aa6 KR |
1410 | symp = symbol_rootP; |
1411 | for (i = 0; i < n; i++, symp = symbol_next (symp)) | |
1412 | { | |
1413 | asympp[i] = symp->bsym; | |
1414 | symp->written = 1; | |
1415 | } | |
1416 | result = bfd_set_symtab (stdoutput, asympp, n); | |
1417 | assert (result == true); | |
1418 | } | |
1419 | } | |
1420 | ||
d5364748 | 1421 | |
f2f7d044 | 1422 | #ifdef obj_frob_file |
85051959 ILT |
1423 | /* If obj_frob_file changes the symbol value at this point, it is |
1424 | responsible for moving the changed value into symp->bsym->value | |
1425 | as well. Hopefully all symbol value changing can be done in | |
1426 | {obj,tc}_frob_symbol. */ | |
f2f7d044 ILT |
1427 | obj_frob_file (); |
1428 | #endif | |
1429 | ||
43ca9aa6 KR |
1430 | /* Now that all the sizes are known, and contents correct, we can |
1431 | start writing the file. */ | |
8d6c34a1 KR |
1432 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1433 | ||
43ca9aa6 KR |
1434 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
1435 | ||
1436 | output_file_close (out_file_name); | |
1437 | #endif /* BFD_ASSEMBLER */ | |
1438 | } | |
d5364748 | 1439 | #endif /* ! BFD */ |
fecd2382 RP |
1440 | |
1441 | /* | |
1442 | * relax_segment() | |
1443 | * | |
1444 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1445 | * values. | |
1446 | * | |
1447 | * Relax the frags. | |
1448 | * | |
1449 | * After this, all frags in this segment have addresses that are correct | |
1450 | * within the segment. Since segments live in different file addresses, | |
1451 | * these frag addresses may not be the same as final object-file addresses. | |
1452 | */ | |
45432836 | 1453 | |
a58374d7 ILT |
1454 | #ifndef md_relax_frag |
1455 | ||
d5364748 | 1456 | /* Subroutines of relax_segment. */ |
43ca9aa6 KR |
1457 | static int |
1458 | is_dnrange (f1, f2) | |
1459 | struct frag *f1; | |
1460 | struct frag *f2; | |
1461 | { | |
1462 | for (; f1; f1 = f1->fr_next) | |
1463 | if (f1->fr_next == f2) | |
1464 | return 1; | |
1465 | return 0; | |
1466 | } | |
1467 | ||
a58374d7 ILT |
1468 | #endif /* ! defined (md_relax_frag) */ |
1469 | ||
43ca9aa6 | 1470 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1471 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1472 | static relax_addressT |
1473 | relax_align (address, alignment) | |
1474 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1475 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1476 | { |
1477 | relax_addressT mask; | |
1478 | relax_addressT new_address; | |
1479 | ||
1480 | mask = ~((~0) << alignment); | |
1481 | new_address = (address + mask) & (~mask); | |
1482 | if (linkrelax) | |
1483 | /* We must provide lots of padding, so the linker can discard it | |
1484 | when needed. The linker will not add extra space, ever. */ | |
1485 | new_address += (1 << alignment); | |
1486 | return (new_address - address); | |
1487 | } | |
45432836 | 1488 | |
6efd877d KR |
1489 | void |
1490 | relax_segment (segment_frag_root, segment) | |
1491 | struct frag *segment_frag_root; | |
43ca9aa6 | 1492 | segT segment; |
fecd2382 | 1493 | { |
6efd877d KR |
1494 | register struct frag *fragP; |
1495 | register relax_addressT address; | |
43ca9aa6 | 1496 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1497 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1498 | #endif |
6efd877d KR |
1499 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1500 | subseg_change (segment, 0); | |
1501 | ||
7f2cb270 KR |
1502 | /* For each frag in segment: count and store (a 1st guess of) |
1503 | fr_address. */ | |
6efd877d KR |
1504 | address = 0; |
1505 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1506 | { | |
1507 | fragP->fr_address = address; | |
1508 | address += fragP->fr_fix; | |
1509 | ||
1510 | switch (fragP->fr_type) | |
1511 | { | |
1512 | case rs_fill: | |
1513 | address += fragP->fr_offset * fragP->fr_var; | |
1514 | break; | |
1515 | ||
1516 | case rs_align: | |
d5364748 | 1517 | address += relax_align (address, (int) fragP->fr_offset); |
6efd877d KR |
1518 | break; |
1519 | ||
1520 | case rs_org: | |
7f2cb270 | 1521 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1522 | break; |
1523 | ||
1524 | case rs_machine_dependent: | |
1525 | address += md_estimate_size_before_relax (fragP, segment); | |
1526 | break; | |
1527 | ||
fecd2382 | 1528 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1529 | /* Broken words don't concern us yet */ |
1530 | case rs_broken_word: | |
1531 | break; | |
fecd2382 | 1532 | #endif |
6efd877d KR |
1533 | |
1534 | default: | |
1535 | BAD_CASE (fragP->fr_type); | |
1536 | break; | |
1537 | } /* switch(fr_type) */ | |
1538 | } /* for each frag in the segment */ | |
1539 | ||
7f2cb270 | 1540 | /* Do relax(). */ |
6efd877d | 1541 | { |
7f2cb270 | 1542 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1543 | /* Cumulative number of addresses we have */ |
1544 | /* relaxed this pass. */ | |
1545 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1546 | long stretched; /* Have we stretched on this pass? */ |
1547 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1548 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1549 | we could be scrod. */ | |
6efd877d KR |
1550 | |
1551 | do | |
1552 | { | |
1553 | stretch = stretched = 0; | |
1554 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1555 | { | |
7f2cb270 KR |
1556 | long growth = 0; |
1557 | unsigned long was_address; | |
1558 | long offset; | |
1559 | symbolS *symbolP; | |
1560 | long target; | |
1561 | long after; | |
6efd877d KR |
1562 | |
1563 | was_address = fragP->fr_address; | |
1564 | address = fragP->fr_address += stretch; | |
1565 | symbolP = fragP->fr_symbol; | |
1566 | offset = fragP->fr_offset; | |
6efd877d KR |
1567 | |
1568 | switch (fragP->fr_type) | |
1569 | { | |
1570 | case rs_fill: /* .fill never relaxes. */ | |
1571 | growth = 0; | |
1572 | break; | |
1573 | ||
fecd2382 | 1574 | #ifndef WORKING_DOT_WORD |
6efd877d | 1575 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1576 | for it I do not want to write it. I do not want to have |
1577 | anything to do with it. This is not the proper way to | |
1578 | implement this misfeature. */ | |
6efd877d KR |
1579 | case rs_broken_word: |
1580 | { | |
1581 | struct broken_word *lie; | |
1582 | struct broken_word *untruth; | |
6efd877d KR |
1583 | |
1584 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
1585 | in the symbol slot). Still, this whole chunk of |
1586 | code is ugly, and I don't feel like doing anything | |
1587 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
1588 | growth = 0; |
1589 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
1590 | lie && lie->dispfrag == fragP; | |
1591 | lie = lie->next_broken_word) | |
1592 | { | |
1593 | ||
1594 | if (lie->added) | |
1595 | continue; | |
1596 | ||
7f2cb270 KR |
1597 | offset = (lie->add->sy_frag->fr_address |
1598 | + S_GET_VALUE (lie->add) | |
1599 | + lie->addnum | |
1600 | - (lie->sub->sy_frag->fr_address | |
1601 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
1602 | if (offset <= -32768 || offset >= 32767) |
1603 | { | |
1604 | if (flagseen['K']) | |
d5364748 KR |
1605 | { |
1606 | char buf[50]; | |
80aab579 | 1607 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
1608 | as_warn (".word %s-%s+%s didn't fit", |
1609 | S_GET_NAME (lie->add), | |
1610 | S_GET_NAME (lie->sub), | |
1611 | buf); | |
1612 | } | |
6efd877d KR |
1613 | lie->added = 1; |
1614 | if (fragP->fr_subtype == 0) | |
1615 | { | |
1616 | fragP->fr_subtype++; | |
1617 | growth += md_short_jump_size; | |
1618 | } | |
7f2cb270 KR |
1619 | for (untruth = lie->next_broken_word; |
1620 | untruth && untruth->dispfrag == lie->dispfrag; | |
1621 | untruth = untruth->next_broken_word) | |
6efd877d KR |
1622 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
1623 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
1624 | { | |
1625 | untruth->added = 2; | |
1626 | untruth->use_jump = lie; | |
1627 | } | |
1628 | growth += md_long_jump_size; | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | break; | |
1633 | } /* case rs_broken_word */ | |
fecd2382 | 1634 | #endif |
6efd877d | 1635 | case rs_align: |
43ca9aa6 KR |
1636 | growth = (relax_align ((relax_addressT) (address |
1637 | + fragP->fr_fix), | |
d5364748 | 1638 | (int) offset) |
43ca9aa6 KR |
1639 | - relax_align ((relax_addressT) (was_address |
1640 | + fragP->fr_fix), | |
d5364748 | 1641 | (int) offset)); |
6efd877d KR |
1642 | break; |
1643 | ||
1644 | case rs_org: | |
1645 | target = offset; | |
1646 | ||
1647 | if (symbolP) | |
1648 | { | |
43ca9aa6 KR |
1649 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1650 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1651 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1652 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
1653 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 1654 | know (symbolP->sy_frag); |
43ca9aa6 KR |
1655 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
1656 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 1657 | #endif |
6efd877d KR |
1658 | target += S_GET_VALUE (symbolP) |
1659 | + symbolP->sy_frag->fr_address; | |
1660 | } /* if we have a symbol */ | |
1661 | ||
1662 | know (fragP->fr_next); | |
1663 | after = fragP->fr_next->fr_address; | |
1664 | growth = ((target - after) > 0) ? (target - after) : 0; | |
43ca9aa6 KR |
1665 | /* Growth may be negative, but variable part of frag |
1666 | cannot have fewer than 0 chars. That is, we can't | |
1667 | .org backwards. */ | |
6efd877d KR |
1668 | |
1669 | growth -= stretch; /* This is an absolute growth factor */ | |
1670 | break; | |
1671 | ||
1672 | case rs_machine_dependent: | |
a58374d7 ILT |
1673 | #ifdef md_relax_frag |
1674 | growth = md_relax_frag (fragP, stretch); | |
1675 | #else | |
1676 | /* The default way to relax a frag is to look through | |
1677 | md_relax_table. */ | |
6efd877d | 1678 | { |
7f2cb270 KR |
1679 | const relax_typeS *this_type; |
1680 | const relax_typeS *start_type; | |
1681 | relax_substateT next_state; | |
1682 | relax_substateT this_state; | |
80aab579 | 1683 | long aim; |
6efd877d | 1684 | |
7f2cb270 KR |
1685 | this_state = fragP->fr_subtype; |
1686 | start_type = this_type = md_relax_table + this_state; | |
6efd877d KR |
1687 | target = offset; |
1688 | ||
1689 | if (symbolP) | |
1690 | { | |
80aab579 | 1691 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
1692 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1693 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1694 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1695 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
1696 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 1697 | #endif |
6efd877d | 1698 | know (symbolP->sy_frag); |
80aab579 | 1699 | #endif |
43ca9aa6 KR |
1700 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
1701 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
1702 | target += |
1703 | S_GET_VALUE (symbolP) | |
1704 | + symbolP->sy_frag->fr_address; | |
1705 | ||
1706 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
1707 | assume it will move by STRETCH just as we did. |
1708 | If this is not so, it will be because some frag | |
d5364748 KR |
1709 | between grows, and that will force another pass. |
1710 | ||
1711 | Beware zero-length frags. | |
1712 | ||
1713 | There should be a faster way to do this. */ | |
6efd877d KR |
1714 | |
1715 | if (symbolP->sy_frag->fr_address >= was_address | |
1716 | && is_dnrange (fragP, symbolP->sy_frag)) | |
1717 | { | |
1718 | target += stretch; | |
7f2cb270 | 1719 | } |
d5364748 | 1720 | } |
6efd877d KR |
1721 | |
1722 | aim = target - address - fragP->fr_fix; | |
1723 | /* The displacement is affected by the instruction size | |
7f2cb270 KR |
1724 | for the 32k architecture. I think we ought to be able |
1725 | to add fragP->fr_pcrel_adjust in all cases (it should be | |
1726 | zero if not used), but just in case it breaks something | |
1727 | else we'll put this inside #ifdef NS32K ... #endif */ | |
d5364748 KR |
1728 | #ifndef TC_NS32K |
1729 | if (fragP->fr_pcrel_adjust) | |
1730 | abort (); | |
1731 | #endif | |
6efd877d | 1732 | aim += fragP->fr_pcrel_adjust; |
6efd877d KR |
1733 | |
1734 | if (aim < 0) | |
1735 | { | |
1736 | /* Look backwards. */ | |
1737 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1738 | if (aim >= this_type->rlx_backward) |
1739 | next_state = 0; | |
1740 | else | |
1741 | { | |
1742 | /* Grow to next state. */ | |
1743 | this_state = next_state; | |
1744 | this_type = md_relax_table + this_state; | |
1745 | next_state = this_type->rlx_more; | |
1746 | } | |
6efd877d KR |
1747 | } |
1748 | else | |
1749 | { | |
a39116f1 | 1750 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 1751 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 1752 | #endif |
6efd877d KR |
1753 | /* Look forwards. */ |
1754 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1755 | if (aim <= this_type->rlx_forward) |
1756 | next_state = 0; | |
1757 | else | |
1758 | { | |
1759 | /* Grow to next state. */ | |
1760 | this_state = next_state; | |
1761 | this_type = md_relax_table + this_state; | |
1762 | next_state = this_type->rlx_more; | |
1763 | } | |
6efd877d KR |
1764 | } |
1765 | ||
7f2cb270 KR |
1766 | growth = this_type->rlx_length - start_type->rlx_length; |
1767 | if (growth != 0) | |
6efd877d | 1768 | fragP->fr_subtype = this_state; |
7f2cb270 | 1769 | } |
a58374d7 | 1770 | #endif |
7f2cb270 | 1771 | break; |
6efd877d KR |
1772 | |
1773 | default: | |
1774 | BAD_CASE (fragP->fr_type); | |
1775 | break; | |
1776 | } | |
1777 | if (growth) | |
1778 | { | |
1779 | stretch += growth; | |
1780 | stretched++; | |
1781 | } | |
1782 | } /* For each frag in the segment. */ | |
1783 | } | |
1784 | while (stretched); /* Until nothing further to relax. */ | |
1785 | } /* do_relax */ | |
1786 | ||
1787 | /* | |
7f2cb270 KR |
1788 | * We now have valid fr_address'es for each frag. |
1789 | */ | |
6efd877d KR |
1790 | |
1791 | /* | |
7f2cb270 KR |
1792 | * All fr_address's are correct, relative to their own segment. |
1793 | * We have made all the fixS we will ever make. | |
1794 | */ | |
6efd877d | 1795 | } /* relax_segment() */ |
fecd2382 | 1796 | |
80aab579 ILT |
1797 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1798 | ||
fecd2382 | 1799 | /* fixup_segment() |
6efd877d | 1800 | |
fecd2382 RP |
1801 | Go through all the fixS's in a segment and see which ones can be |
1802 | handled now. (These consist of fixS where we have since discovered | |
1803 | the value of a symbol, or the address of the frag involved.) | |
1804 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 1805 | |
fecd2382 RP |
1806 | Result is a count of how many relocation structs will be needed to |
1807 | handle the remaining fixS's that we couldn't completely handle here. | |
1808 | These will be output later by emit_relocations(). */ | |
1809 | ||
09952cd9 | 1810 | static long |
6efd877d | 1811 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 1812 | register fixS *fixP; |
6efd877d | 1813 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 1814 | { |
6efd877d KR |
1815 | register long seg_reloc_count; |
1816 | register symbolS *add_symbolP; | |
1817 | register symbolS *sub_symbolP; | |
d5364748 | 1818 | valueT add_number; |
6efd877d KR |
1819 | register int size; |
1820 | register char *place; | |
1821 | register long where; | |
1822 | register char pcrel; | |
1823 | register fragS *fragP; | |
43ca9aa6 | 1824 | register segT add_symbol_segment = absolute_section; |
6efd877d | 1825 | |
6efd877d | 1826 | seg_reloc_count = 0; |
13e9182d KR |
1827 | /* If the linker is doing the relaxing, we must not do any fixups. */ |
1828 | /* Well, strictly speaking that's not true -- we could do any that | |
1829 | are PC-relative and don't cross regions that could change size. | |
1830 | And for the i960 (the only machine for which we've got a relaxing | |
1831 | linker right now), we might be able to turn callx/callj into bal | |
1832 | in cases where we know the maximum displacement. */ | |
6efd877d | 1833 | if (linkrelax) |
43ca9aa6 KR |
1834 | for (; fixP; fixP = fixP->fx_next) |
1835 | seg_reloc_count++; | |
6efd877d | 1836 | else |
6efd877d KR |
1837 | for (; fixP; fixP = fixP->fx_next) |
1838 | { | |
1839 | fragP = fixP->fx_frag; | |
1840 | know (fragP); | |
1841 | where = fixP->fx_where; | |
1842 | place = fragP->fr_literal + where; | |
1843 | size = fixP->fx_size; | |
1844 | add_symbolP = fixP->fx_addsy; | |
fecd2382 | 1845 | #ifdef TC_I960 |
a58374d7 | 1846 | if (fixP->fx_tcbit && TC_S_IS_CALLNAME (add_symbolP)) |
6efd877d | 1847 | { |
43ca9aa6 KR |
1848 | /* Relocation should be done via the associated 'bal' |
1849 | entry point symbol. */ | |
6efd877d KR |
1850 | |
1851 | if (!TC_S_IS_BALNAME (tc_get_bal_of_call (add_symbolP))) | |
1852 | { | |
1853 | as_bad ("No 'bal' entry point for leafproc %s", | |
1854 | S_GET_NAME (add_symbolP)); | |
1855 | continue; | |
1856 | } | |
1857 | fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP); | |
43ca9aa6 | 1858 | } |
fecd2382 | 1859 | #endif |
6efd877d KR |
1860 | sub_symbolP = fixP->fx_subsy; |
1861 | add_number = fixP->fx_offset; | |
1862 | pcrel = fixP->fx_pcrel; | |
1863 | ||
1864 | if (add_symbolP) | |
43ca9aa6 | 1865 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); |
6efd877d KR |
1866 | |
1867 | if (sub_symbolP) | |
1868 | { | |
1869 | if (!add_symbolP) | |
1870 | { | |
1871 | /* Its just -sym */ | |
80aab579 | 1872 | /* @@ Should try converting to pcrel ref to fixed addr. */ |
43ca9aa6 KR |
1873 | if (S_GET_SEGMENT (sub_symbolP) != absolute_section) |
1874 | as_bad ("Negative of non-absolute symbol %s", | |
1875 | S_GET_NAME (sub_symbolP)); | |
6efd877d KR |
1876 | |
1877 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d KR |
1878 | } |
1879 | else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment) | |
1880 | && (SEG_NORMAL (add_symbol_segment) | |
43ca9aa6 | 1881 | || (add_symbol_segment == absolute_section))) |
6efd877d | 1882 | { |
43ca9aa6 KR |
1883 | /* Difference of 2 symbols from same segment. |
1884 | Can't make difference of 2 undefineds: 'value' means | |
1885 | something different for N_UNDF. */ | |
fecd2382 | 1886 | #ifdef TC_I960 |
6efd877d | 1887 | /* Makes no sense to use the difference of 2 arbitrary symbols |
43ca9aa6 | 1888 | as the target of a call instruction. */ |
a58374d7 | 1889 | if (fixP->fx_tcbit) |
6efd877d KR |
1890 | { |
1891 | as_bad ("callj to difference of 2 symbols"); | |
1892 | } | |
1893 | #endif /* TC_I960 */ | |
1894 | add_number += S_GET_VALUE (add_symbolP) - | |
1895 | S_GET_VALUE (sub_symbolP); | |
1896 | ||
1897 | add_symbolP = NULL; | |
335d35c8 JL |
1898 | |
1899 | /* Let the target machine make the final determination | |
1900 | as to whether or not a relocation will be needed to | |
1901 | handle this fixup. */ | |
1902 | if (!TC_FORCE_RELOCATION (fixP)) | |
1903 | fixP->fx_addsy = NULL; | |
6efd877d KR |
1904 | } |
1905 | else | |
1906 | { | |
1907 | /* Different segments in subtraction. */ | |
43ca9aa6 KR |
1908 | know (!(S_IS_EXTERNAL (sub_symbolP) |
1909 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
6efd877d | 1910 | |
43ca9aa6 | 1911 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) |
6efd877d KR |
1912 | { |
1913 | add_number -= S_GET_VALUE (sub_symbolP); | |
1914 | } | |
80aab579 | 1915 | #ifdef DIFF_EXPR_OK |
0f894895 JL |
1916 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
1917 | #if 0 | |
1918 | /* Do this even if it's already described as | |
1919 | pc-relative. For example, on the m68k, an | |
1920 | operand of "pc@(foo-.-2)" should address "foo" | |
1921 | in a pc-relative mode. */ | |
1922 | && pcrel | |
1923 | #endif | |
1924 | ) | |
80aab579 ILT |
1925 | { |
1926 | /* Make it pc-relative. */ | |
1927 | add_number += (md_pcrel_from (fixP) | |
1928 | - S_GET_VALUE (sub_symbolP)); | |
1929 | pcrel = 1; | |
1930 | fixP->fx_pcrel = 1; | |
1931 | sub_symbolP = 0; | |
1932 | fixP->fx_subsy = 0; | |
1933 | } | |
1934 | #endif | |
6efd877d KR |
1935 | else |
1936 | { | |
d5364748 KR |
1937 | char buf[50]; |
1938 | sprint_value (buf, fragP->fr_address + where); | |
1939 | as_bad ("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
6efd877d | 1940 | segment_name (S_GET_SEGMENT (sub_symbolP)), |
d5364748 KR |
1941 | S_GET_NAME (sub_symbolP), buf); |
1942 | } | |
20b39b6f | 1943 | } |
d5364748 | 1944 | } |
6efd877d KR |
1945 | |
1946 | if (add_symbolP) | |
1947 | { | |
1948 | if (add_symbol_segment == this_segment_type && pcrel) | |
1949 | { | |
1950 | /* | |
43ca9aa6 KR |
1951 | * This fixup was made when the symbol's segment was |
1952 | * SEG_UNKNOWN, but it is now in the local segment. | |
1953 | * So we know how to do the address without relocation. | |
1954 | */ | |
fecd2382 | 1955 | #ifdef TC_I960 |
43ca9aa6 KR |
1956 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
1957 | 'bal', in which cases it modifies *fixP as appropriate. | |
1958 | In the case of a 'calls', no further work is required, | |
1959 | and *fixP has been set up to make the rest of the code | |
1960 | below a no-op. */ | |
6efd877d | 1961 | reloc_callj (fixP); |
fecd2382 | 1962 | #endif /* TC_I960 */ |
6efd877d KR |
1963 | |
1964 | add_number += S_GET_VALUE (add_symbolP); | |
1965 | add_number -= md_pcrel_from (fixP); | |
1966 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
335d35c8 JL |
1967 | |
1968 | /* Let the target machine make the final determination | |
1969 | as to whether or not a relocation will be needed to | |
1970 | handle this fixup. */ | |
1971 | if (!TC_FORCE_RELOCATION (fixP)) | |
1972 | fixP->fx_addsy = NULL; | |
6efd877d KR |
1973 | } |
1974 | else | |
1975 | { | |
43ca9aa6 | 1976 | if (add_symbol_segment == absolute_section) |
6efd877d | 1977 | { |
fecd2382 | 1978 | #ifdef TC_I960 |
43ca9aa6 KR |
1979 | /* See comment about reloc_callj() above. */ |
1980 | reloc_callj (fixP); | |
fecd2382 | 1981 | #endif /* TC_I960 */ |
6efd877d | 1982 | add_number += S_GET_VALUE (add_symbolP); |
335d35c8 JL |
1983 | |
1984 | /* Let the target machine make the final determination | |
1985 | as to whether or not a relocation will be needed to | |
1986 | handle this fixup. */ | |
1987 | if (!TC_FORCE_RELOCATION (fixP)) | |
1988 | fixP->fx_addsy = NULL; | |
6efd877d | 1989 | add_symbolP = NULL; |
43ca9aa6 KR |
1990 | } |
1991 | else if (add_symbol_segment == undefined_section | |
1992 | #ifdef BFD_ASSEMBLER | |
13e9182d | 1993 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 KR |
1994 | #endif |
1995 | ) | |
1996 | { | |
fecd2382 | 1997 | #ifdef TC_I960 |
6efd877d KR |
1998 | if ((int) fixP->fx_bit_fixP == 13) |
1999 | { | |
2000 | /* This is a COBR instruction. They have only a | |
43ca9aa6 KR |
2001 | * 13-bit displacement and are only to be used |
2002 | * for local branches: flag as error, don't generate | |
2003 | * relocation. | |
2004 | */ | |
6efd877d | 2005 | as_bad ("can't use COBR format with external label"); |
335d35c8 JL |
2006 | |
2007 | /* Let the target machine make the final determination | |
2008 | as to whether or not a relocation will be needed to | |
2009 | handle this fixup. */ | |
2010 | if (!TC_FORCE_RELOCATION (fixP)) | |
2011 | fixP->fx_addsy = NULL; | |
6efd877d KR |
2012 | continue; |
2013 | } /* COBR */ | |
fecd2382 | 2014 | #endif /* TC_I960 */ |
6d5460ab | 2015 | |
fecd2382 | 2016 | #ifdef OBJ_COFF |
c593cf41 | 2017 | #ifdef TE_I386AIX |
6efd877d KR |
2018 | if (S_IS_COMMON (add_symbolP)) |
2019 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2020 | #endif /* TE_I386AIX */ |
fecd2382 | 2021 | #endif /* OBJ_COFF */ |
6efd877d | 2022 | ++seg_reloc_count; |
43ca9aa6 KR |
2023 | } |
2024 | else | |
2025 | { | |
2026 | seg_reloc_count++; | |
2027 | add_number += S_GET_VALUE (add_symbolP); | |
2028 | } | |
84fa9814 KR |
2029 | } |
2030 | } | |
6efd877d KR |
2031 | |
2032 | if (pcrel) | |
2033 | { | |
2034 | add_number -= md_pcrel_from (fixP); | |
2035 | if (add_symbolP == 0) | |
2036 | { | |
2037 | fixP->fx_addsy = &abs_symbol; | |
2038 | ++seg_reloc_count; | |
2039 | } /* if there's an add_symbol */ | |
2040 | } /* if pcrel */ | |
2041 | ||
c43d56f7 | 2042 | if (!fixP->fx_bit_fixP && size > 0) |
6efd877d | 2043 | { |
13e9182d KR |
2044 | valueT mask = 0; |
2045 | /* set all bits to one */ | |
2046 | mask--; | |
2047 | /* Technically speaking, combining these produces an | |
2048 | undefined result if size is sizeof (valueT), though I | |
2049 | think these two half-way operations should both be | |
2050 | defined. */ | |
2051 | mask <<= size * 4; | |
2052 | mask <<= size * 4; | |
2053 | if ((add_number & mask) != 0 | |
2054 | && (add_number & mask) != mask) | |
6efd877d | 2055 | { |
efa0c22e | 2056 | char buf[50], buf2[50]; |
d5364748 | 2057 | sprint_value (buf, fragP->fr_address + where); |
efa0c22e KR |
2058 | if (add_number > 1000) |
2059 | sprint_value (buf2, add_number); | |
2060 | else | |
84fa9814 KR |
2061 | sprintf (buf2, "%ld", (long) add_number); |
2062 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2063 | "Value of %s too large for field of %d bytes at %s", | |
2064 | buf2, size, buf); | |
6efd877d KR |
2065 | } /* generic error checking */ |
2066 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
43ca9aa6 KR |
2067 | /* Warn if a .word value is too large when treated as a signed |
2068 | number. We already know it is not too negative. This is to | |
2069 | catch over-large switches generated by gcc on the 68k. */ | |
6efd877d KR |
2070 | if (!flagseen['J'] |
2071 | && size == 2 | |
2072 | && add_number > 0x7fff) | |
84fa9814 KR |
2073 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2074 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2075 | (long) add_number, | |
2076 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d KR |
2077 | #endif |
2078 | } /* not a bit fix */ | |
2079 | ||
43ca9aa6 KR |
2080 | #ifdef BFD_ASSEMBLER |
2081 | md_apply_fix (fixP, &add_number); | |
2082 | #else | |
6efd877d | 2083 | md_apply_fix (fixP, add_number); |
43ca9aa6 | 2084 | #endif |
6efd877d KR |
2085 | } /* For each fixS in this segment. */ |
2086 | ||
13e9182d | 2087 | #if defined (OBJ_COFF) && defined (TC_I960) |
6efd877d KR |
2088 | { |
2089 | fixS *topP = fixP; | |
2090 | ||
2091 | /* two relocs per callj under coff. */ | |
2092 | for (fixP = topP; fixP; fixP = fixP->fx_next) | |
a58374d7 | 2093 | if (fixP->fx_tcbit && fixP->fx_addsy != 0) |
13e9182d | 2094 | ++seg_reloc_count; |
6efd877d | 2095 | } |
13e9182d | 2096 | #endif /* OBJ_COFF && TC_I960 */ |
6efd877d | 2097 | |
6efd877d | 2098 | return (seg_reloc_count); |
d5364748 | 2099 | } |
fecd2382 | 2100 | |
80aab579 ILT |
2101 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
2102 | ||
fecd2382 | 2103 | /* end of write.c */ |