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 | ||
f5c32424 KR |
33 | #ifndef TC_ADJUST_RELOC_COUNT |
34 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
35 | #endif | |
36 | ||
335d35c8 JL |
37 | #ifndef TC_FORCE_RELOCATION |
38 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
39 | #endif | |
40 | ||
43ca9aa6 KR |
41 | #ifndef WORKING_DOT_WORD |
42 | extern CONST int md_short_jump_size; | |
43 | extern CONST int md_long_jump_size; | |
44 | #endif | |
45 | ||
46 | #ifndef BFD_ASSEMBLER | |
47 | ||
45432836 | 48 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
49 | struct frag *text_frag_root; |
50 | struct frag *data_frag_root; | |
51 | struct frag *bss_frag_root; | |
fecd2382 | 52 | |
09952cd9 KR |
53 | struct frag *text_last_frag; /* Last frag in segment. */ |
54 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 55 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 56 | #endif |
fecd2382 | 57 | |
80aab579 | 58 | #if ! defined (BFD_ASSEMBLER) && ! defined (BFD) |
fecd2382 | 59 | static object_headers headers; |
fecd2382 | 60 | static char *the_object_file; |
80aab579 ILT |
61 | #endif |
62 | ||
63 | long string_byte_count; | |
fecd2382 RP |
64 | char *next_object_file_charP; /* Tracks object file bytes. */ |
65 | ||
3eb802b5 | 66 | #ifndef OBJ_VMS |
fecd2382 | 67 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 68 | #endif |
fecd2382 | 69 | |
43ca9aa6 KR |
70 | #endif /* BFD_ASSEMBLER */ |
71 | ||
7a0405b9 | 72 | #ifdef BFD_ASSEMBLER |
b23f6743 | 73 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
74 | symbolS *add, symbolS *sub, |
75 | offsetT offset, int pcrel, | |
7a0405b9 | 76 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 77 | #else |
b23f6743 | 78 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
79 | symbolS *add, symbolS *sub, |
80 | offsetT offset, int pcrel, | |
81 | int r_type)); | |
5ac34ac3 | 82 | #endif |
80aab579 | 83 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
6efd877d | 84 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 85 | #endif |
d5364748 | 86 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
87 | |
88 | /* | |
89 | * fix_new() | |
90 | * | |
91 | * Create a fixS in obstack 'notes'. | |
92 | */ | |
5ac34ac3 ILT |
93 | static fixS * |
94 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
95 | r_type) | |
6efd877d KR |
96 | fragS *frag; /* Which frag? */ |
97 | int where; /* Where in that frag? */ | |
b23f6743 | 98 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 99 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 100 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 101 | offsetT offset; /* X_add_number. */ |
6efd877d | 102 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
103 | #ifdef BFD_ASSEMBLER |
104 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
105 | #else | |
6efd877d | 106 | int r_type; /* Relocation type */ |
43ca9aa6 | 107 | #endif |
fecd2382 | 108 | { |
6efd877d KR |
109 | fixS *fixP; |
110 | ||
111 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); | |
112 | ||
113 | fixP->fx_frag = frag; | |
114 | fixP->fx_where = where; | |
115 | fixP->fx_size = size; | |
116 | fixP->fx_addsy = add_symbol; | |
117 | fixP->fx_subsy = sub_symbol; | |
118 | fixP->fx_offset = offset; | |
119 | fixP->fx_pcrel = pcrel; | |
43ca9aa6 | 120 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 121 | fixP->fx_r_type = r_type; |
c593cf41 | 122 | #endif |
6efd877d KR |
123 | fixP->fx_im_disp = 0; |
124 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 125 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 126 | fixP->fx_addnumber = 0; |
20b39b6f | 127 | fixP->tc_fix_data = NULL; |
a58374d7 | 128 | fixP->fx_tcbit = 0; |
43ca9aa6 KR |
129 | |
130 | #ifdef TC_something | |
131 | fixP->fx_bsr = 0; | |
132 | #endif | |
43ca9aa6 | 133 | |
84fa9814 KR |
134 | as_where (&fixP->fx_file, &fixP->fx_line); |
135 | ||
43ca9aa6 KR |
136 | /* Usually, we want relocs sorted numerically, but while |
137 | comparing to older versions of gas that have relocs | |
138 | reverse sorted, it is convenient to have this compile | |
139 | time option. xoxorich. */ | |
140 | ||
141 | { | |
6efd877d | 142 | |
43ca9aa6 KR |
143 | #ifdef BFD_ASSEMBLER |
144 | fixS **seg_fix_rootP = & (seg_info (now_seg)->fix_root); | |
145 | fixS **seg_fix_tailP = & (seg_info (now_seg)->fix_tail); | |
146 | #endif | |
09952cd9 | 147 | |
f6e504fe | 148 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 149 | |
43ca9aa6 KR |
150 | fixP->fx_next = *seg_fix_rootP; |
151 | *seg_fix_rootP = fixP; | |
6efd877d | 152 | |
f6e504fe | 153 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 154 | |
43ca9aa6 | 155 | fixP->fx_next = NULL; |
6efd877d | 156 | |
43ca9aa6 KR |
157 | if (*seg_fix_tailP) |
158 | (*seg_fix_tailP)->fx_next = fixP; | |
159 | else | |
160 | *seg_fix_rootP = fixP; | |
161 | *seg_fix_tailP = fixP; | |
6efd877d | 162 | |
f6e504fe | 163 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 164 | |
43ca9aa6 KR |
165 | } |
166 | ||
167 | return fixP; | |
168 | } | |
169 | ||
5ac34ac3 ILT |
170 | /* Create a fixup relative to a symbol (plus a constant). */ |
171 | ||
172 | fixS * | |
173 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
174 | fragS *frag; /* Which frag? */ | |
175 | int where; /* Where in that frag? */ | |
176 | short int size; /* 1, 2, or 4 usually. */ | |
177 | symbolS *add_symbol; /* X_add_symbol. */ | |
178 | offsetT offset; /* X_add_number. */ | |
179 | int pcrel; /* TRUE if PC-relative relocation. */ | |
180 | #ifdef BFD_ASSEMBLER | |
181 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
182 | #else | |
183 | int r_type; /* Relocation type */ | |
184 | #endif | |
185 | { | |
186 | return fix_new_internal (frag, where, size, add_symbol, | |
187 | (symbolS *) NULL, offset, pcrel, r_type); | |
188 | } | |
189 | ||
190 | /* Create a fixup for an expression. Currently we only support fixups | |
191 | for difference expressions. That is itself more than most object | |
192 | file formats support anyhow. */ | |
193 | ||
194 | fixS * | |
195 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
196 | fragS *frag; /* Which frag? */ | |
197 | int where; /* Where in that frag? */ | |
198 | short int size; /* 1, 2, or 4 usually. */ | |
199 | expressionS *exp; /* Expression. */ | |
200 | int pcrel; /* TRUE if PC-relative relocation. */ | |
201 | #ifdef BFD_ASSEMBLER | |
202 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
203 | #else | |
204 | int r_type; /* Relocation type */ | |
205 | #endif | |
206 | { | |
207 | symbolS *add = NULL; | |
208 | symbolS *sub = NULL; | |
209 | offsetT off = 0; | |
210 | ||
211 | switch (exp->X_op) | |
212 | { | |
213 | case O_absent: | |
214 | break; | |
215 | ||
b23f6743 KR |
216 | case O_uminus: |
217 | sub = exp->X_add_symbol; | |
218 | off = exp->X_add_number; | |
219 | break; | |
220 | ||
5ac34ac3 ILT |
221 | case O_subtract: |
222 | sub = exp->X_op_symbol; | |
223 | /* Fall through. */ | |
224 | case O_symbol: | |
225 | add = exp->X_add_symbol; | |
226 | /* Fall through. */ | |
227 | case O_constant: | |
228 | off = exp->X_add_number; | |
229 | break; | |
230 | ||
231 | default: | |
232 | as_bad ("expression too complex for fixup"); | |
233 | } | |
234 | ||
235 | return fix_new_internal (frag, where, size, add, sub, off, | |
236 | pcrel, r_type); | |
237 | } | |
238 | ||
43ca9aa6 KR |
239 | /* Append a string onto another string, bumping the pointer along. */ |
240 | void | |
241 | append (charPP, fromP, length) | |
242 | char **charPP; | |
243 | char *fromP; | |
244 | unsigned long length; | |
245 | { | |
246 | /* Don't trust memcpy() of 0 chars. */ | |
247 | if (length == 0) | |
248 | return; | |
249 | ||
80aab579 | 250 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
251 | *charPP += length; |
252 | } | |
253 | ||
254 | #ifndef BFD_ASSEMBLER | |
255 | int section_alignment[SEG_MAXIMUM_ORDINAL]; | |
256 | #endif | |
257 | ||
258 | /* | |
259 | * This routine records the largest alignment seen for each segment. | |
260 | * If the beginning of the segment is aligned on the worst-case | |
261 | * boundary, all of the other alignments within it will work. At | |
262 | * least one object format really uses this info. | |
263 | */ | |
264 | void | |
265 | record_alignment (seg, align) | |
266 | /* Segment to which alignment pertains */ | |
267 | segT seg; | |
268 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
269 | boundary, etc.) */ | |
270 | int align; | |
271 | { | |
272 | #ifdef BFD_ASSEMBLER | |
273 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
274 | bfd_set_section_alignment (stdoutput, seg, align); | |
275 | #else | |
276 | if (align > section_alignment[(int) seg]) | |
277 | section_alignment[(int) seg] = align; | |
278 | #endif | |
279 | } | |
280 | ||
281 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) | |
282 | ||
283 | static fragS * | |
284 | chain_frchains_together_1 (section, frchp) | |
285 | segT section; | |
286 | struct frchain *frchp; | |
287 | { | |
288 | fragS dummy, *prev_frag = &dummy; | |
289 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) | |
290 | { | |
291 | prev_frag->fr_next = frchp->frch_root; | |
292 | prev_frag = frchp->frch_last; | |
293 | } | |
294 | prev_frag->fr_next = 0; | |
295 | return prev_frag; | |
296 | } | |
297 | ||
298 | #endif | |
299 | ||
300 | #ifdef BFD_ASSEMBLER | |
301 | ||
302 | static void | |
303 | chain_frchains_together (abfd, section, xxx) | |
304 | bfd *abfd; /* unused */ | |
305 | segT section; | |
a58374d7 | 306 | PTR xxx; /* unused */ |
43ca9aa6 | 307 | { |
f2f7d044 ILT |
308 | segment_info_type *info; |
309 | ||
310 | /* BFD may have introduced its own sections without using | |
311 | subseg_new, so it is possible that seg_info is NULL. */ | |
312 | info = seg_info (section); | |
313 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
314 | info->frchainP->frch_last |
315 | = chain_frchains_together_1 (section, info->frchainP); | |
43ca9aa6 KR |
316 | } |
317 | ||
318 | #endif | |
542e1629 | 319 | |
d5364748 | 320 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 321 | |
6efd877d KR |
322 | void |
323 | remove_subsegs (head, seg, root, last) | |
324 | frchainS *head; | |
325 | int seg; | |
326 | fragS **root; | |
327 | fragS **last; | |
65bfcf2e | 328 | { |
65bfcf2e | 329 | *root = head->frch_root; |
43ca9aa6 KR |
330 | *last = chain_frchains_together_1 (seg, head); |
331 | } | |
332 | ||
333 | #endif /* BFD */ | |
334 | ||
80aab579 ILT |
335 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
336 | ||
43ca9aa6 | 337 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
338 | static void |
339 | cvt_frag_to_fill (sec, fragP) | |
340 | segT sec; | |
43ca9aa6 | 341 | fragS *fragP; |
43ca9aa6 | 342 | #else |
58d4951d ILT |
343 | static void |
344 | cvt_frag_to_fill (headers, fragP) | |
345 | object_headers *headers; | |
346 | fragS *fragP; | |
43ca9aa6 | 347 | #endif |
58d4951d | 348 | { |
43ca9aa6 | 349 | switch (fragP->fr_type) |
6efd877d | 350 | { |
43ca9aa6 KR |
351 | case rs_align: |
352 | case rs_org: | |
353 | #ifdef HANDLE_ALIGN | |
354 | HANDLE_ALIGN (fragP); | |
355 | #endif | |
356 | fragP->fr_type = rs_fill; | |
357 | know (fragP->fr_var == 1); | |
358 | know (fragP->fr_next != NULL); | |
359 | ||
360 | fragP->fr_offset = (fragP->fr_next->fr_address | |
361 | - fragP->fr_address | |
362 | - fragP->fr_fix); | |
363 | break; | |
65bfcf2e | 364 | |
43ca9aa6 KR |
365 | case rs_fill: |
366 | break; | |
367 | ||
368 | case rs_machine_dependent: | |
369 | #ifdef BFD_ASSEMBLER | |
370 | md_convert_frag (stdoutput, sec, fragP); | |
371 | #else | |
372 | md_convert_frag (headers, fragP); | |
373 | #endif | |
374 | ||
d5364748 | 375 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
376 | |
377 | /* | |
378 | * After md_convert_frag, we make the frag into a ".space 0". | |
379 | * Md_convert_frag() should set up any fixSs and constants | |
380 | * required. | |
381 | */ | |
382 | frag_wane (fragP); | |
383 | break; | |
384 | ||
385 | #ifndef WORKING_DOT_WORD | |
386 | case rs_broken_word: | |
387 | { | |
388 | struct broken_word *lie; | |
389 | ||
390 | if (fragP->fr_subtype) | |
391 | { | |
392 | fragP->fr_fix += md_short_jump_size; | |
393 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
394 | lie && lie->dispfrag == fragP; | |
395 | lie = lie->next_broken_word) | |
396 | if (lie->added == 1) | |
397 | fragP->fr_fix += md_long_jump_size; | |
398 | } | |
399 | frag_wane (fragP); | |
400 | } | |
401 | break; | |
402 | #endif | |
403 | ||
404 | default: | |
405 | BAD_CASE (fragP->fr_type); | |
406 | break; | |
6efd877d | 407 | } |
65bfcf2e | 408 | } |
6efd877d | 409 | |
80aab579 ILT |
410 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
411 | ||
43ca9aa6 KR |
412 | #ifdef BFD_ASSEMBLER |
413 | static void | |
414 | relax_and_size_seg (abfd, sec, xxx) | |
415 | bfd *abfd; | |
416 | asection *sec; | |
a58374d7 | 417 | PTR xxx; |
43ca9aa6 KR |
418 | { |
419 | flagword flags; | |
13e9182d KR |
420 | fragS *fragp; |
421 | segment_info_type *seginfo; | |
422 | int x; | |
423 | valueT size, newsize; | |
43ca9aa6 KR |
424 | |
425 | flags = bfd_get_section_flags (abfd, sec); | |
426 | ||
13e9182d KR |
427 | seginfo = (segment_info_type *) bfd_get_section_userdata (abfd, sec); |
428 | if (seginfo && seginfo->frchainP) | |
43ca9aa6 | 429 | { |
13e9182d KR |
430 | relax_segment (seginfo->frchainP->frch_root, sec); |
431 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
432 | cvt_frag_to_fill (sec, fragp); | |
433 | for (fragp = seginfo->frchainP->frch_root; | |
434 | fragp->fr_next; | |
435 | fragp = fragp->fr_next) | |
436 | /* walk to last elt */; | |
437 | size = fragp->fr_address + fragp->fr_fix; | |
438 | } | |
439 | else | |
440 | size = 0; | |
a58374d7 ILT |
441 | |
442 | if (size > 0 && ! seginfo->bss) | |
443 | flags |= SEC_HAS_CONTENTS; | |
444 | ||
445 | /* @@ This is just an approximation. */ | |
5f6efd5a | 446 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
447 | flags |= SEC_RELOC; |
448 | else | |
449 | flags &= ~SEC_RELOC; | |
450 | x = bfd_set_section_flags (abfd, sec, flags); | |
451 | assert (x == true); | |
452 | ||
20b39b6f JL |
453 | newsize = md_section_align (sec, size); |
454 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
455 | assert (x == true); |
456 | ||
457 | /* If the size had to be rounded up, add some padding in the last | |
458 | non-empty frag. */ | |
13e9182d KR |
459 | assert (newsize >= size); |
460 | if (size != newsize) | |
461 | { | |
462 | fragS *last = seginfo->frchainP->frch_last; | |
463 | fragp = seginfo->frchainP->frch_root; | |
464 | while (fragp->fr_next != last) | |
465 | fragp = fragp->fr_next; | |
466 | last->fr_address = size; | |
467 | fragp->fr_offset += newsize - size; | |
468 | } | |
469 | ||
43ca9aa6 KR |
470 | #ifdef tc_frob_section |
471 | tc_frob_section (sec); | |
472 | #endif | |
473 | #ifdef obj_frob_section | |
474 | obj_frob_section (sec); | |
475 | #endif | |
476 | } | |
477 | ||
d5364748 KR |
478 | #ifdef DEBUG2 |
479 | static void | |
480 | dump_section_relocs (abfd, sec, stream_) | |
481 | bfd *abfd; | |
482 | asection *sec; | |
483 | char *stream_; | |
484 | { | |
485 | FILE *stream = (FILE *) stream_; | |
486 | segment_info_type *seginfo = seg_info (sec); | |
487 | fixS *fixp = seginfo->fix_root; | |
488 | ||
489 | if (!fixp) | |
490 | return; | |
491 | ||
492 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
493 | while (fixp) | |
494 | { | |
495 | symbolS *s = fixp->fx_addsy; | |
496 | if (s) | |
497 | fprintf (stream, " %08x: %s(%s+%x)+%x\n", fixp, | |
498 | S_GET_NAME (s), s->bsym->section->name, | |
499 | S_GET_VALUE (s), fixp->fx_offset); | |
500 | else | |
501 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
502 | fixp = fixp->fx_next; | |
503 | } | |
504 | } | |
505 | #else | |
506 | #define dump_section_relocs(ABFD,SEC,STREAM) (void)(ABFD,SEC,STREAM) | |
507 | #endif | |
508 | ||
509 | static void | |
510 | adjust_reloc_syms (abfd, sec, xxx) | |
511 | bfd *abfd; | |
512 | asection *sec; | |
a58374d7 | 513 | PTR xxx; |
d5364748 KR |
514 | { |
515 | segment_info_type *seginfo = seg_info (sec); | |
516 | fixS *fixp; | |
517 | ||
518 | if (seginfo == NULL) | |
519 | return; | |
520 | ||
521 | dump_section_relocs (abfd, sec, stderr); | |
522 | ||
523 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
524 | if (fixp->fx_addsy) | |
525 | { | |
526 | symbolS *sym = fixp->fx_addsy; | |
527 | asection *symsec = sym->bsym->section; | |
528 | segment_info_type *symseginfo = seg_info (symsec); | |
529 | ||
a58374d7 ILT |
530 | /* If it's one of these sections, assume the symbol is |
531 | definitely going to be output. The code in | |
532 | md_estimate_size_before_relax in tc-mips.c uses this test | |
533 | as well, so if you change this code you should look at that | |
534 | code. */ | |
d5364748 KR |
535 | if (symsec == &bfd_und_section |
536 | || symsec == &bfd_abs_section | |
537 | || bfd_is_com_section (symsec)) | |
80aab579 ILT |
538 | { |
539 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
540 | continue; | |
541 | } | |
d5364748 KR |
542 | |
543 | /* Since we're reducing to section symbols, don't attempt to reduce | |
544 | anything that's already using one. */ | |
545 | if (sym->bsym == symsec->symbol) | |
80aab579 ILT |
546 | { |
547 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
548 | continue; | |
549 | } | |
d5364748 KR |
550 | |
551 | /* Is there some other reason we can't adjust this one? (E.g., | |
552 | call/bal links in i960-bout symbols.) */ | |
553 | #ifdef obj_fix_adjustable | |
554 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
555 | { |
556 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
557 | continue; | |
558 | } | |
d5364748 | 559 | #endif |
efa0c22e KR |
560 | |
561 | /* Is there some other (target cpu dependent) reason we can't adjust | |
562 | this one? (E.g. relocations involving function addresses on | |
563 | the PA. */ | |
564 | #ifdef tc_fix_adjustable | |
565 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
566 | { |
567 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
568 | continue; | |
569 | } | |
efa0c22e KR |
570 | #endif |
571 | ||
d5364748 KR |
572 | /* If the section symbol isn't going to be output, the relocs |
573 | at least should still work. If not, figure out what to do | |
574 | when we run into that case. */ | |
575 | fixp->fx_offset += S_GET_VALUE (sym); | |
576 | if (sym->sy_frag) | |
577 | fixp->fx_offset += sym->sy_frag->fr_address; | |
6868afe6 | 578 | fixp->fx_addsy = section_symbol (symsec); |
80aab579 | 579 | fixp->fx_addsy->sy_used_in_reloc = 1; |
d5364748 | 580 | } |
e67a0640 KR |
581 | #ifdef RELOC_REQUIRES_SYMBOL |
582 | else | |
583 | { | |
584 | /* There was no symbol required by this relocation. However, | |
585 | BFD doesn't really handle relocations without symbols well. | |
586 | (At least, the COFF support doesn't.) So for now we fake up | |
587 | a local symbol in the absolute section. */ | |
588 | static symbolS *abs_sym; | |
589 | if (!abs_sym) | |
590 | { | |
591 | abs_sym = symbol_new ("*absolute0zero*", &bfd_abs_section, 0, | |
592 | &zero_address_frag); | |
593 | abs_sym->sy_used_in_reloc = 1; | |
594 | } | |
595 | fixp->fx_addsy = abs_sym; | |
596 | } | |
597 | #endif | |
d5364748 KR |
598 | |
599 | dump_section_relocs (abfd, sec, stderr); | |
600 | } | |
601 | ||
43ca9aa6 | 602 | static void |
8d6c34a1 | 603 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
604 | bfd *abfd; |
605 | asection *sec; | |
a58374d7 | 606 | PTR xxx; |
43ca9aa6 KR |
607 | { |
608 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
609 | int i; |
610 | unsigned int n; | |
43ca9aa6 KR |
611 | arelent **relocs; |
612 | fixS *fixp; | |
613 | ||
d5364748 KR |
614 | /* If seginfo is NULL, we did not create this section; don't do |
615 | anything with it. */ | |
616 | if (seginfo == NULL) | |
43ca9aa6 KR |
617 | return; |
618 | ||
619 | fixup_segment (seginfo->fix_root, sec); | |
620 | ||
3d3c5039 | 621 | n = 0; |
d5364748 KR |
622 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
623 | n++; | |
43ca9aa6 | 624 | |
d5364748 | 625 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 626 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
627 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
628 | n * sizeof (arelent *)); | |
8d6c34a1 | 629 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 630 | |
3d3c5039 ILT |
631 | i = 0; |
632 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
633 | { | |
634 | arelent *reloc; | |
3d3c5039 ILT |
635 | char *data; |
636 | bfd_reloc_status_type s; | |
637 | ||
638 | if (fixp->fx_addsy == 0) | |
639 | { | |
640 | /* @@ Need some other flag to indicate which have already | |
641 | been performed... */ | |
642 | n--; | |
643 | continue; | |
644 | } | |
645 | reloc = tc_gen_reloc (sec, fixp); | |
646 | if (!reloc) | |
647 | { | |
648 | n--; | |
649 | continue; | |
650 | } | |
651 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 652 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
653 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
654 | abort (); | |
335d35c8 | 655 | |
84fa9814 KR |
656 | if (reloc->howto->partial_inplace == false |
657 | && reloc->howto->pcrel_offset == true | |
658 | && reloc->howto->pc_relative == true) | |
659 | { | |
660 | /* bfd_perform_relocation screws this up */ | |
661 | reloc->addend += reloc->address; | |
662 | } | |
335d35c8 | 663 | /* Pass bogus address so that when bfd_perform_relocation adds |
f5c32424 KR |
664 | `reloc->address' back in, it'll come up with `data', which is where |
665 | we want it to operate. We can't just do it by fudging reloc->address, | |
666 | since that might be used in the calculations(?). */ | |
3d3c5039 ILT |
667 | s = bfd_perform_relocation (stdoutput, reloc, data - reloc->address, |
668 | sec, stdoutput); | |
669 | switch (s) | |
670 | { | |
671 | case bfd_reloc_ok: | |
672 | break; | |
673 | default: | |
674 | as_fatal ("bad return from bfd_perform_relocation"); | |
675 | } | |
676 | relocs[i++] = reloc; | |
677 | } | |
d5364748 KR |
678 | #else |
679 | n = n * MAX_RELOC_EXPANSION; | |
680 | /* Set up reloc information as well. */ | |
681 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
682 | n * sizeof (arelent *)); | |
683 | ||
684 | i = 0; | |
685 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
686 | { | |
687 | arelent **reloc; | |
d5364748 KR |
688 | char *data; |
689 | bfd_reloc_status_type s; | |
690 | int j; | |
691 | ||
692 | if (fixp->fx_addsy == 0) | |
693 | { | |
694 | /* @@ Need some other flag to indicate which have already | |
695 | been performed... */ | |
696 | n--; | |
697 | continue; | |
698 | } | |
699 | reloc = tc_gen_reloc (sec, fixp); | |
700 | ||
701 | for (j = 0; reloc[j]; j++) | |
702 | { | |
703 | relocs[i++] = reloc[j]; | |
704 | assert(i <= n); | |
705 | } | |
706 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 707 | if (fixp->fx_where + fixp->fx_size |
d5364748 KR |
708 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
709 | abort (); | |
710 | for (j = 0; reloc[j]; j++) | |
711 | { | |
a58374d7 ILT |
712 | s = bfd_perform_relocation (stdoutput, reloc[j], |
713 | data - reloc[0]->address, | |
d5364748 KR |
714 | sec, stdoutput); |
715 | switch (s) | |
716 | { | |
717 | case bfd_reloc_ok: | |
718 | break; | |
719 | default: | |
720 | as_fatal ("bad return from bfd_perform_relocation"); | |
721 | } | |
722 | } | |
723 | } | |
724 | n = i; | |
725 | #endif | |
726 | ||
3d3c5039 ILT |
727 | if (n) |
728 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
729 | else |
730 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
731 | (bfd_get_section_flags (abfd, sec) |
732 | & (flagword) ~SEC_RELOC)); | |
d5364748 KR |
733 | #ifdef DEBUG2 |
734 | { | |
735 | int i; | |
736 | arelent *r; | |
737 | asymbol *s; | |
738 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
739 | for (i = 0; i < n; i++) | |
740 | { | |
741 | r = relocs[i]; | |
742 | s = *r->sym_ptr_ptr; | |
743 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
744 | i, r, r->address, s->name, r->addend); | |
745 | } | |
746 | } | |
747 | #endif | |
8d6c34a1 | 748 | } |
d5364748 | 749 | |
8d6c34a1 KR |
750 | static void |
751 | write_contents (abfd, sec, xxx) | |
752 | bfd *abfd; | |
753 | asection *sec; | |
a58374d7 | 754 | PTR xxx; |
8d6c34a1 KR |
755 | { |
756 | segment_info_type *seginfo = seg_info (sec); | |
757 | unsigned long offset = 0; | |
80aab579 | 758 | fragS *f; |
3d3c5039 ILT |
759 | |
760 | /* Write out the frags. */ | |
f37449aa ILT |
761 | if (seginfo == NULL |
762 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
763 | return; |
764 | ||
80aab579 ILT |
765 | for (f = seginfo->frchainP->frch_root; |
766 | f; | |
767 | f = f->fr_next) | |
43ca9aa6 KR |
768 | { |
769 | int x; | |
770 | unsigned long fill_size; | |
771 | char *fill_literal; | |
772 | long count; | |
773 | ||
80aab579 ILT |
774 | assert (f->fr_type == rs_fill); |
775 | if (f->fr_fix) | |
43ca9aa6 KR |
776 | { |
777 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
778 | f->fr_literal, (file_ptr) offset, |
779 | (bfd_size_type) f->fr_fix); | |
43ca9aa6 | 780 | assert (x == true); |
80aab579 | 781 | offset += f->fr_fix; |
43ca9aa6 | 782 | } |
80aab579 ILT |
783 | fill_literal = f->fr_literal + f->fr_fix; |
784 | fill_size = f->fr_var; | |
785 | count = f->fr_offset; | |
43ca9aa6 KR |
786 | assert (count >= 0); |
787 | if (fill_size && count) | |
788 | while (count--) | |
789 | { | |
790 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 | 791 | fill_literal, (file_ptr) offset, |
d5364748 | 792 | (bfd_size_type) fill_size); |
43ca9aa6 KR |
793 | assert (x == true); |
794 | offset += fill_size; | |
795 | } | |
796 | } | |
43ca9aa6 KR |
797 | } |
798 | #endif | |
799 | ||
80aab579 | 800 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
801 | static void |
802 | merge_data_into_text () | |
803 | { | |
4064305e | 804 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
805 | seg_info (text_section)->frchainP->frch_last->fr_next = |
806 | seg_info (data_section)->frchainP->frch_root; | |
807 | seg_info (text_section)->frchainP->frch_last = | |
808 | seg_info (data_section)->frchainP->frch_last; | |
809 | seg_info (data_section)->frchainP = 0; | |
810 | #else | |
811 | fixS *tmp; | |
812 | ||
813 | text_last_frag->fr_next = data_frag_root; | |
814 | text_last_frag = data_last_frag; | |
815 | data_last_frag = NULL; | |
816 | data_frag_root = NULL; | |
817 | if (text_fix_root) | |
818 | { | |
819 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
820 | tmp->fx_next = data_fix_root; | |
821 | text_fix_tail = data_fix_tail; | |
822 | } | |
823 | else | |
824 | text_fix_root = data_fix_root; | |
825 | data_fix_root = NULL; | |
826 | #endif | |
827 | } | |
80aab579 | 828 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
829 | |
830 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
831 | static void | |
832 | relax_and_size_all_segments () | |
833 | { | |
13e9182d KR |
834 | fragS *fragP; |
835 | ||
b23f6743 KR |
836 | relax_segment (text_frag_root, SEG_TEXT); |
837 | relax_segment (data_frag_root, SEG_DATA); | |
838 | relax_segment (bss_frag_root, SEG_BSS); | |
839 | /* | |
840 | * Now the addresses of frags are correct within the segment. | |
841 | */ | |
842 | ||
843 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
844 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
845 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
846 | ||
847 | /* | |
848 | * Join the 2 segments into 1 huge segment. | |
849 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
850 | * Then join the data frags after the text frags. | |
851 | * | |
852 | * Determine a_data [length of data segment]. | |
853 | */ | |
854 | if (data_frag_root) | |
855 | { | |
856 | register relax_addressT slide; | |
857 | ||
858 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
859 | ||
860 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
861 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
862 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
863 | #ifdef OBJ_BOUT | |
864 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
865 | /* For b.out: If the data section has a strict alignment | |
866 | requirement, its load address in the .o file will be | |
867 | rounded up from the size of the text section. These | |
868 | two values are *not* the same! Similarly for the bss | |
869 | section.... */ | |
870 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
871 | #endif | |
872 | ||
873 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
874 | { | |
875 | fragP->fr_address += slide; | |
876 | } /* for each data frag */ | |
877 | ||
878 | know (text_last_frag != 0); | |
879 | text_last_frag->fr_next = data_frag_root; | |
880 | } | |
881 | else | |
882 | { | |
883 | H_SET_DATA_SIZE (&headers, 0); | |
884 | } | |
885 | ||
886 | #ifdef OBJ_BOUT | |
887 | /* See above comments on b.out data section address. */ | |
888 | { | |
889 | long bss_vma; | |
890 | if (data_last_frag == 0) | |
891 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
892 | else | |
893 | bss_vma = data_last_frag->fr_address; | |
894 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
895 | bss_address_frag.fr_address = bss_vma; | |
896 | } | |
897 | #else /* ! OBJ_BOUT */ | |
898 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
899 | H_GET_DATA_SIZE (&headers)); | |
900 | ||
efa0c22e | 901 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
902 | |
903 | /* Slide all the frags */ | |
904 | if (bss_frag_root) | |
905 | { | |
906 | relax_addressT slide = bss_address_frag.fr_address; | |
907 | ||
908 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
909 | { | |
910 | fragP->fr_address += slide; | |
911 | } /* for each bss frag */ | |
912 | } | |
913 | ||
b23f6743 KR |
914 | if (bss_last_frag) |
915 | H_SET_BSS_SIZE (&headers, | |
916 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
917 | else | |
918 | H_SET_BSS_SIZE (&headers, 0); | |
919 | } | |
920 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
921 | ||
d5364748 KR |
922 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
923 | ||
6efd877d KR |
924 | void |
925 | write_object_file () | |
45432836 | 926 | { |
6efd877d | 927 | register struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 928 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
6efd877d | 929 | register fragS *fragP; /* Track along all frags. */ |
58d4951d | 930 | #endif |
d5364748 | 931 | #if !defined (BFD_ASSEMBLER) && !defined (OBJ_VMS) |
6efd877d | 932 | long object_file_size; |
d5364748 | 933 | #endif |
6efd877d | 934 | |
43ca9aa6 KR |
935 | /* Do we really want to write it? */ |
936 | { | |
937 | int n_warns, n_errs; | |
938 | n_warns = had_warnings (); | |
939 | n_errs = had_errors (); | |
940 | /* The -Z flag indicates that an object file should be generated, | |
941 | regardless of warnings and errors. */ | |
942 | if (flagseen['Z']) | |
943 | { | |
944 | if (n_warns || n_errs) | |
945 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
946 | n_errs, n_errs == 1 ? "" : "s", | |
947 | n_warns, n_warns == 1 ? "" : "s"); | |
948 | } | |
949 | else | |
950 | { | |
951 | if (n_errs) | |
952 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
953 | n_errs, n_errs == 1 ? "" : "s", | |
954 | n_warns, n_warns == 1 ? "" : "s"); | |
955 | } | |
956 | } | |
957 | ||
3eb802b5 | 958 | #ifdef OBJ_VMS |
6efd877d | 959 | /* |
3eb802b5 ILT |
960 | * Under VMS we try to be compatible with VAX-11 "C". Thus, we |
961 | * call a routine to check for the definition of the procedure | |
962 | * "_main", and if so -- fix it up so that it can be program | |
963 | * entry point. | |
964 | */ | |
6efd877d | 965 | VMS_Check_For_Main (); |
fecd2382 | 966 | #endif /* VMS */ |
43ca9aa6 KR |
967 | |
968 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
969 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
970 | frag that requires least thought. ".align" frags like to have a | |
971 | following frag since that makes calculating their intended length | |
972 | trivial. | |
973 | ||
974 | @@ Is this really necessary?? */ | |
3eb802b5 | 975 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 976 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 977 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 978 | #else |
f2f7d044 | 979 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 980 | #endif |
3eb802b5 | 981 | #endif |
6efd877d KR |
982 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
983 | { | |
43ca9aa6 | 984 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 985 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
986 | /* frag_align will have left a new frag. |
987 | Use this last frag for an empty ".fill". | |
988 | ||
989 | For this segment ... | |
990 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
991 | frag_wane (frag_now); |
992 | frag_now->fr_fix = 0; | |
993 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 994 | } |
6efd877d | 995 | |
43ca9aa6 KR |
996 | /* From now on, we don't care about sub-segments. Build one frag chain |
997 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 998 | |
43ca9aa6 KR |
999 | #ifdef BFD_ASSEMBLER |
1000 | /* Remove the sections created by gas for its own purposes. */ | |
1001 | { | |
1002 | asection **seclist, *sec; | |
1003 | seclist = &stdoutput->sections; | |
1004 | while (seclist && *seclist) | |
1005 | { | |
1006 | sec = *seclist; | |
5ac34ac3 | 1007 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1008 | { |
1009 | sec = sec->next; | |
1010 | *seclist = sec; | |
1011 | stdoutput->section_count--; | |
1012 | if (!sec) | |
1013 | break; | |
1014 | } | |
1015 | if (*seclist) | |
1016 | seclist = &(*seclist)->next; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1021 | #else | |
6efd877d KR |
1022 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1023 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1024 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1025 | #endif |
6efd877d | 1026 | |
43ca9aa6 KR |
1027 | /* We have two segments. If user gave -R flag, then we must put the |
1028 | data frags into the text segment. Do this before relaxing so | |
1029 | we know to take advantage of -R and make shorter addresses. */ | |
1030 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
6efd877d KR |
1031 | if (flagseen['R']) |
1032 | { | |
b23f6743 | 1033 | merge_data_into_text (); |
6efd877d KR |
1034 | } |
1035 | #endif | |
43ca9aa6 KR |
1036 | |
1037 | #ifdef BFD_ASSEMBLER | |
1038 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1039 | #else | |
b23f6743 | 1040 | relax_and_size_all_segments (); |
43ca9aa6 | 1041 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1042 | |
43ca9aa6 | 1043 | #ifndef BFD_ASSEMBLER |
6efd877d | 1044 | /* |
7f2cb270 KR |
1045 | * |
1046 | * Crawl the symbol chain. | |
1047 | * | |
1048 | * For each symbol whose value depends on a frag, take the address of | |
1049 | * that frag and subsume it into the value of the symbol. | |
1050 | * After this, there is just one way to lookup a symbol value. | |
1051 | * Values are left in their final state for object file emission. | |
1052 | * We adjust the values of 'L' local symbols, even if we do | |
1053 | * not intend to emit them to the object file, because their values | |
1054 | * are needed for fix-ups. | |
1055 | * | |
1056 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1057 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1058 | * | |
1059 | * Count the remaining symbols. | |
1060 | * Assign a symbol number to each symbol. | |
1061 | * Count the number of string-table chars we will emit. | |
1062 | * Put this info into the headers as appropriate. | |
1063 | * | |
1064 | */ | |
6efd877d KR |
1065 | know (zero_address_frag.fr_address == 0); |
1066 | string_byte_count = sizeof (string_byte_count); | |
1067 | ||
1068 | obj_crawl_symbol_chain (&headers); | |
1069 | ||
1070 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1071 | string_byte_count = 0; |
6efd877d KR |
1072 | |
1073 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1074 | ||
1075 | /* | |
7f2cb270 KR |
1076 | * Addresses of frags now reflect addresses we use in the object file. |
1077 | * Symbol values are correct. | |
1078 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1079 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1080 | */ | |
6efd877d KR |
1081 | subseg_change (SEG_TEXT, 0); |
1082 | ||
1083 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1084 | { | |
43ca9aa6 | 1085 | cvt_frag_to_fill (&headers, fragP); |
6efd877d | 1086 | |
43ca9aa6 KR |
1087 | /* Some assert macros don't work with # directives mixed in. */ |
1088 | #ifndef NDEBUG | |
1089 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1090 | #ifdef OBJ_BOUT |
43ca9aa6 | 1091 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1092 | #endif |
6efd877d | 1093 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1094 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1095 | abort (); | |
1096 | #endif | |
1097 | } | |
1098 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1099 | |
fecd2382 | 1100 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1101 | { |
1102 | struct broken_word *lie; | |
1103 | struct broken_word **prevP; | |
1104 | ||
1105 | prevP = &broken_words; | |
1106 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1107 | if (!lie->added) | |
a39116f1 | 1108 | { |
5ac34ac3 ILT |
1109 | expressionS exp; |
1110 | ||
1111 | exp.X_op = O_subtract; | |
1112 | exp.X_add_symbol = lie->add; | |
1113 | exp.X_op_symbol = lie->sub; | |
1114 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1115 | #ifdef BFD_ASSEMBLER |
5ac34ac3 ILT |
1116 | fix_new_exp (lie->frag, |
1117 | lie->word_goes_here - lie->frag->fr_literal, | |
1118 | 2, &exp, 0, BFD_RELOC_NONE); | |
43ca9aa6 KR |
1119 | #else |
1120 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1121 | fix_new_exp (lie->frag, |
1122 | lie->word_goes_here - lie->frag->fr_literal, | |
1123 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1124 | #else |
fecd2382 | 1125 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1126 | fix_new_ns32k_exp (lie->frag, |
1127 | lie->word_goes_here - lie->frag->fr_literal, | |
1128 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1129 | #else |
5ac34ac3 ILT |
1130 | fix_new_exp (lie->frag, |
1131 | lie->word_goes_here - lie->frag->fr_literal, | |
1132 | 2, &exp, 0, 0); | |
fecd2382 | 1133 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1134 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1135 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1136 | *prevP = lie->next_broken_word; |
a39116f1 | 1137 | } |
6efd877d KR |
1138 | else |
1139 | prevP = &(lie->next_broken_word); | |
1140 | ||
1141 | for (lie = broken_words; lie;) | |
1142 | { | |
1143 | struct broken_word *untruth; | |
1144 | char *table_ptr; | |
d5364748 KR |
1145 | addressT table_addr; |
1146 | addressT from_addr, to_addr; | |
6efd877d KR |
1147 | int n, m; |
1148 | ||
6efd877d KR |
1149 | fragP = lie->dispfrag; |
1150 | ||
43ca9aa6 | 1151 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1152 | n = 0; |
1153 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1154 | if (untruth->added == 1) | |
1155 | n++; | |
1156 | ||
1157 | table_ptr = lie->dispfrag->fr_opcode; | |
1158 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1159 | /* Create the jump around the long jumps. This is a short |
1160 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1161 | from_addr = table_addr; |
1162 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1163 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1164 | table_ptr += md_short_jump_size; | |
1165 | table_addr += md_short_jump_size; | |
1166 | ||
1167 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1168 | { | |
1169 | if (lie->added == 2) | |
1170 | continue; | |
1171 | /* Patch the jump table */ | |
1172 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1173 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
6efd877d KR |
1174 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1175 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1176 | { | |
1177 | if (untruth->use_jump == lie) | |
1178 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1179 | } | |
1180 | ||
1181 | /* Install the long jump */ | |
1182 | /* this is a long jump from table_ptr+0 to the final target */ | |
1183 | from_addr = table_addr; | |
1184 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
1185 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1186 | table_ptr += md_long_jump_size; | |
1187 | table_addr += md_long_jump_size; | |
1188 | } | |
1189 | } | |
1190 | } | |
fecd2382 | 1191 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1192 | |
43ca9aa6 | 1193 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1194 | #ifndef OBJ_VMS |
6efd877d KR |
1195 | { /* not vms */ |
1196 | /* | |
3eb802b5 ILT |
1197 | * Scan every FixS performing fixups. We had to wait until now to do |
1198 | * this because md_convert_frag() may have made some fixSs. | |
1199 | */ | |
6efd877d KR |
1200 | int trsize, drsize; |
1201 | ||
1202 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1203 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1204 | subseg_change (SEG_DATA, 0); |
d5364748 | 1205 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1206 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1207 | ||
1208 | /* FIXME move this stuff into the pre-write-hook */ | |
1209 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1210 | H_SET_ENTRY_POINT (&headers, 0); | |
1211 | ||
1212 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1213 | |
1214 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1215 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1216 | ||
1217 | output_file_create (out_file_name); | |
1218 | ||
1219 | obj_header_append (&next_object_file_charP, &headers); | |
1220 | ||
1221 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1222 | ||
1223 | /* | |
43ca9aa6 KR |
1224 | * Emit code. |
1225 | */ | |
6efd877d KR |
1226 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1227 | { | |
1228 | register long count; | |
1229 | register char *fill_literal; | |
1230 | register long fill_size; | |
1231 | ||
1232 | know (fragP->fr_type == rs_fill); | |
1233 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1234 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1235 | fill_size = fragP->fr_var; | |
1236 | know (fragP->fr_offset >= 0); | |
1237 | ||
1238 | for (count = fragP->fr_offset; count; count--) | |
1239 | { | |
1240 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1241 | } /* for each */ | |
1242 | ||
1243 | } /* for each code frag. */ | |
1244 | ||
1245 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1246 | ||
1247 | /* | |
43ca9aa6 KR |
1248 | * Emit relocations. |
1249 | */ | |
6efd877d KR |
1250 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
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))); | |
fecd2382 | 1252 | #ifdef TC_I960 |
6efd877d | 1253 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1254 | * first data fragment, not end of last text fragment: alignment of the |
1255 | * start of the data segment may place a gap between the segments. | |
1256 | */ | |
6efd877d | 1257 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1258 | #else /* TC_I960 */ |
6efd877d | 1259 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1260 | #endif /* TC_I960 */ |
6efd877d KR |
1261 | |
1262 | 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))); | |
1263 | ||
1264 | /* | |
43ca9aa6 KR |
1265 | * Emit line number entries. |
1266 | */ | |
6efd877d KR |
1267 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1268 | 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))); | |
1269 | ||
1270 | /* | |
3eb802b5 ILT |
1271 | * Emit symbols. |
1272 | */ | |
6efd877d KR |
1273 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1274 | 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))); | |
1275 | ||
1276 | /* | |
3eb802b5 ILT |
1277 | * Emit strings. |
1278 | */ | |
6efd877d KR |
1279 | |
1280 | if (string_byte_count > 0) | |
1281 | { | |
1282 | obj_emit_strings (&next_object_file_charP); | |
1283 | } /* only if we have a string table */ | |
1284 | ||
45432836 | 1285 | #ifdef BFD_HEADERS |
6efd877d KR |
1286 | bfd_seek (stdoutput, 0, 0); |
1287 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1288 | #else |
6efd877d KR |
1289 | |
1290 | /* Write the data to the file */ | |
1291 | output_file_append (the_object_file, object_file_size, out_file_name); | |
45432836 | 1292 | #endif |
6efd877d KR |
1293 | } /* non vms output */ |
1294 | #else /* VMS */ | |
1295 | /* | |
3eb802b5 ILT |
1296 | * Now do the VMS-dependent part of writing the object file |
1297 | */ | |
85825401 ILT |
1298 | VMS_write_object_file (H_GET_TEXT_SIZE (&headers), |
1299 | H_GET_DATA_SIZE (&headers), | |
1300 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1301 | text_frag_root, data_frag_root); |
6efd877d | 1302 | #endif /* VMS */ |
43ca9aa6 | 1303 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1304 | |
d5364748 KR |
1305 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1306 | ||
43ca9aa6 KR |
1307 | /* Set up symbol table, and write it out. */ |
1308 | if (symbol_rootP) | |
1309 | { | |
80aab579 ILT |
1310 | unsigned int i = 0; |
1311 | unsigned int n; | |
43ca9aa6 KR |
1312 | symbolS *symp; |
1313 | ||
1314 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1315 | { | |
5868b1fe ILT |
1316 | if (! symp->sy_resolved) |
1317 | { | |
5ac34ac3 | 1318 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1319 | { |
1320 | /* This is the normal case; skip the call. */ | |
1321 | S_SET_VALUE (symp, | |
1322 | (S_GET_VALUE (symp) | |
1323 | + symp->sy_frag->fr_address)); | |
1324 | symp->sy_resolved = 1; | |
1325 | } | |
1326 | else | |
1327 | resolve_symbol_value (symp); | |
1328 | } | |
1329 | ||
43ca9aa6 KR |
1330 | /* So far, common symbols have been treated like undefined symbols. |
1331 | Put them in the common section now. */ | |
1332 | if (S_IS_DEFINED (symp) == 0 | |
1333 | && S_GET_VALUE (symp) != 0) | |
1334 | S_SET_SEGMENT (symp, &bfd_com_section); | |
1335 | #if 0 | |
5868b1fe | 1336 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1337 | S_GET_NAME (symp), symp, |
1338 | S_GET_VALUE (symp), | |
d5364748 | 1339 | symp->bsym->flags, |
43ca9aa6 KR |
1340 | segment_name (symp->bsym->section)); |
1341 | #endif | |
335d35c8 | 1342 | |
80aab579 | 1343 | #ifdef obj_frob_symbol |
335d35c8 JL |
1344 | { |
1345 | int punt = 0; | |
1346 | obj_frob_symbol (symp, punt); | |
1347 | if (punt) | |
1348 | goto punt_it; | |
1349 | } | |
43ca9aa6 KR |
1350 | #endif |
1351 | #ifdef tc_frob_symbol | |
335d35c8 JL |
1352 | { |
1353 | int punt = 0; | |
1354 | tc_frob_symbol (symp, punt); | |
1355 | if (punt) | |
1356 | goto punt_it; | |
1357 | } | |
43ca9aa6 | 1358 | #endif |
80aab579 | 1359 | |
43ca9aa6 KR |
1360 | /* If we don't want to keep this symbol, splice it out of the |
1361 | chain now. */ | |
335d35c8 | 1362 | if (S_IS_LOCAL (symp)) |
43ca9aa6 | 1363 | { |
43ca9aa6 | 1364 | punt_it: |
335d35c8 JL |
1365 | if (! symp->sy_used_in_reloc) |
1366 | { | |
1367 | symbolS *prev, *next; | |
1368 | prev = symbol_previous (symp); | |
1369 | next = symbol_next (symp); | |
b23f6743 | 1370 | #ifdef DEBUG_SYMS |
335d35c8 | 1371 | verify_symbol_chain_2 (symp); |
43ca9aa6 | 1372 | #endif |
335d35c8 JL |
1373 | if (prev) |
1374 | { | |
1375 | symbol_next (prev) = next; | |
1376 | symp = prev; | |
1377 | } | |
1378 | else if (symp == symbol_rootP) | |
1379 | symbol_rootP = next; | |
1380 | else | |
1381 | abort (); | |
1382 | if (next) | |
1383 | symbol_previous (next) = prev; | |
1384 | else | |
1385 | symbol_lastP = prev; | |
b23f6743 | 1386 | #ifdef DEBUG_SYMS |
335d35c8 JL |
1387 | if (prev) |
1388 | verify_symbol_chain_2 (prev); | |
1389 | else if (next) | |
1390 | verify_symbol_chain_2 (next); | |
45432836 | 1391 | #endif |
335d35c8 JL |
1392 | continue; |
1393 | } | |
43ca9aa6 | 1394 | } |
85051959 | 1395 | |
80aab579 ILT |
1396 | /* Make sure we really got a value for the symbol. */ |
1397 | if (! symp->sy_resolved) | |
1398 | { | |
1399 | as_bad ("can't resolve value for symbol \"%s\"", | |
1400 | S_GET_NAME (symp)); | |
1401 | symp->sy_resolved = 1; | |
1402 | } | |
1403 | ||
85051959 ILT |
1404 | /* Set the value into the BFD symbol. Up til now the value |
1405 | has only been kept in the gas symbolS struct. */ | |
1406 | symp->bsym->value = S_GET_VALUE (symp); | |
1407 | ||
43ca9aa6 KR |
1408 | i++; |
1409 | } | |
1410 | n = i; | |
1411 | if (n) | |
1412 | { | |
1413 | asymbol **asympp; | |
1414 | boolean result; | |
d5364748 | 1415 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); |
43ca9aa6 | 1416 | |
d5364748 KR |
1417 | asympp = (asymbol **) bfd_alloc (stdoutput, |
1418 | n * sizeof (asymbol *)); | |
43ca9aa6 KR |
1419 | symp = symbol_rootP; |
1420 | for (i = 0; i < n; i++, symp = symbol_next (symp)) | |
1421 | { | |
1422 | asympp[i] = symp->bsym; | |
1423 | symp->written = 1; | |
1424 | } | |
1425 | result = bfd_set_symtab (stdoutput, asympp, n); | |
1426 | assert (result == true); | |
1427 | } | |
1428 | } | |
1429 | ||
d5364748 | 1430 | |
f2f7d044 | 1431 | #ifdef obj_frob_file |
85051959 ILT |
1432 | /* If obj_frob_file changes the symbol value at this point, it is |
1433 | responsible for moving the changed value into symp->bsym->value | |
1434 | as well. Hopefully all symbol value changing can be done in | |
1435 | {obj,tc}_frob_symbol. */ | |
f2f7d044 ILT |
1436 | obj_frob_file (); |
1437 | #endif | |
1438 | ||
43ca9aa6 KR |
1439 | /* Now that all the sizes are known, and contents correct, we can |
1440 | start writing the file. */ | |
8d6c34a1 KR |
1441 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1442 | ||
43ca9aa6 | 1443 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1444 | #endif /* BFD_ASSEMBLER */ |
1445 | } | |
d5364748 | 1446 | #endif /* ! BFD */ |
fecd2382 RP |
1447 | |
1448 | /* | |
1449 | * relax_segment() | |
1450 | * | |
1451 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1452 | * values. | |
1453 | * | |
1454 | * Relax the frags. | |
1455 | * | |
1456 | * After this, all frags in this segment have addresses that are correct | |
1457 | * within the segment. Since segments live in different file addresses, | |
1458 | * these frag addresses may not be the same as final object-file addresses. | |
1459 | */ | |
45432836 | 1460 | |
a58374d7 ILT |
1461 | #ifndef md_relax_frag |
1462 | ||
d5364748 | 1463 | /* Subroutines of relax_segment. */ |
43ca9aa6 KR |
1464 | static int |
1465 | is_dnrange (f1, f2) | |
1466 | struct frag *f1; | |
1467 | struct frag *f2; | |
1468 | { | |
1469 | for (; f1; f1 = f1->fr_next) | |
1470 | if (f1->fr_next == f2) | |
1471 | return 1; | |
1472 | return 0; | |
1473 | } | |
1474 | ||
a58374d7 ILT |
1475 | #endif /* ! defined (md_relax_frag) */ |
1476 | ||
43ca9aa6 | 1477 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1478 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1479 | static relax_addressT |
1480 | relax_align (address, alignment) | |
1481 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1482 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1483 | { |
1484 | relax_addressT mask; | |
1485 | relax_addressT new_address; | |
1486 | ||
1487 | mask = ~((~0) << alignment); | |
1488 | new_address = (address + mask) & (~mask); | |
1489 | if (linkrelax) | |
1490 | /* We must provide lots of padding, so the linker can discard it | |
1491 | when needed. The linker will not add extra space, ever. */ | |
1492 | new_address += (1 << alignment); | |
1493 | return (new_address - address); | |
1494 | } | |
45432836 | 1495 | |
6efd877d KR |
1496 | void |
1497 | relax_segment (segment_frag_root, segment) | |
1498 | struct frag *segment_frag_root; | |
43ca9aa6 | 1499 | segT segment; |
fecd2382 | 1500 | { |
6efd877d KR |
1501 | register struct frag *fragP; |
1502 | register relax_addressT address; | |
43ca9aa6 | 1503 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1504 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1505 | #endif |
6efd877d KR |
1506 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1507 | subseg_change (segment, 0); | |
1508 | ||
7f2cb270 KR |
1509 | /* For each frag in segment: count and store (a 1st guess of) |
1510 | fr_address. */ | |
6efd877d KR |
1511 | address = 0; |
1512 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1513 | { | |
1514 | fragP->fr_address = address; | |
1515 | address += fragP->fr_fix; | |
1516 | ||
1517 | switch (fragP->fr_type) | |
1518 | { | |
1519 | case rs_fill: | |
1520 | address += fragP->fr_offset * fragP->fr_var; | |
1521 | break; | |
1522 | ||
1523 | case rs_align: | |
d5364748 | 1524 | address += relax_align (address, (int) fragP->fr_offset); |
6efd877d KR |
1525 | break; |
1526 | ||
1527 | case rs_org: | |
7f2cb270 | 1528 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1529 | break; |
1530 | ||
1531 | case rs_machine_dependent: | |
1532 | address += md_estimate_size_before_relax (fragP, segment); | |
1533 | break; | |
1534 | ||
fecd2382 | 1535 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1536 | /* Broken words don't concern us yet */ |
1537 | case rs_broken_word: | |
1538 | break; | |
fecd2382 | 1539 | #endif |
6efd877d KR |
1540 | |
1541 | default: | |
1542 | BAD_CASE (fragP->fr_type); | |
1543 | break; | |
1544 | } /* switch(fr_type) */ | |
1545 | } /* for each frag in the segment */ | |
1546 | ||
7f2cb270 | 1547 | /* Do relax(). */ |
6efd877d | 1548 | { |
7f2cb270 | 1549 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1550 | /* Cumulative number of addresses we have */ |
1551 | /* relaxed this pass. */ | |
1552 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1553 | long stretched; /* Have we stretched on this pass? */ |
1554 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1555 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1556 | we could be scrod. */ | |
6efd877d KR |
1557 | |
1558 | do | |
1559 | { | |
1560 | stretch = stretched = 0; | |
1561 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1562 | { | |
7f2cb270 KR |
1563 | long growth = 0; |
1564 | unsigned long was_address; | |
1565 | long offset; | |
1566 | symbolS *symbolP; | |
1567 | long target; | |
1568 | long after; | |
6efd877d KR |
1569 | |
1570 | was_address = fragP->fr_address; | |
1571 | address = fragP->fr_address += stretch; | |
1572 | symbolP = fragP->fr_symbol; | |
1573 | offset = fragP->fr_offset; | |
6efd877d KR |
1574 | |
1575 | switch (fragP->fr_type) | |
1576 | { | |
1577 | case rs_fill: /* .fill never relaxes. */ | |
1578 | growth = 0; | |
1579 | break; | |
1580 | ||
fecd2382 | 1581 | #ifndef WORKING_DOT_WORD |
6efd877d | 1582 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1583 | for it I do not want to write it. I do not want to have |
1584 | anything to do with it. This is not the proper way to | |
1585 | implement this misfeature. */ | |
6efd877d KR |
1586 | case rs_broken_word: |
1587 | { | |
1588 | struct broken_word *lie; | |
1589 | struct broken_word *untruth; | |
6efd877d KR |
1590 | |
1591 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
1592 | in the symbol slot). Still, this whole chunk of |
1593 | code is ugly, and I don't feel like doing anything | |
1594 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
1595 | growth = 0; |
1596 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
1597 | lie && lie->dispfrag == fragP; | |
1598 | lie = lie->next_broken_word) | |
1599 | { | |
1600 | ||
1601 | if (lie->added) | |
1602 | continue; | |
1603 | ||
7f2cb270 KR |
1604 | offset = (lie->add->sy_frag->fr_address |
1605 | + S_GET_VALUE (lie->add) | |
1606 | + lie->addnum | |
1607 | - (lie->sub->sy_frag->fr_address | |
1608 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
1609 | if (offset <= -32768 || offset >= 32767) |
1610 | { | |
1611 | if (flagseen['K']) | |
d5364748 KR |
1612 | { |
1613 | char buf[50]; | |
80aab579 | 1614 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
1615 | as_warn (".word %s-%s+%s didn't fit", |
1616 | S_GET_NAME (lie->add), | |
1617 | S_GET_NAME (lie->sub), | |
1618 | buf); | |
1619 | } | |
6efd877d KR |
1620 | lie->added = 1; |
1621 | if (fragP->fr_subtype == 0) | |
1622 | { | |
1623 | fragP->fr_subtype++; | |
1624 | growth += md_short_jump_size; | |
1625 | } | |
7f2cb270 KR |
1626 | for (untruth = lie->next_broken_word; |
1627 | untruth && untruth->dispfrag == lie->dispfrag; | |
1628 | untruth = untruth->next_broken_word) | |
6efd877d KR |
1629 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
1630 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
1631 | { | |
1632 | untruth->added = 2; | |
1633 | untruth->use_jump = lie; | |
1634 | } | |
1635 | growth += md_long_jump_size; | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | break; | |
1640 | } /* case rs_broken_word */ | |
fecd2382 | 1641 | #endif |
6efd877d | 1642 | case rs_align: |
43ca9aa6 KR |
1643 | growth = (relax_align ((relax_addressT) (address |
1644 | + fragP->fr_fix), | |
d5364748 | 1645 | (int) offset) |
43ca9aa6 KR |
1646 | - relax_align ((relax_addressT) (was_address |
1647 | + fragP->fr_fix), | |
d5364748 | 1648 | (int) offset)); |
6efd877d KR |
1649 | break; |
1650 | ||
1651 | case rs_org: | |
1652 | target = offset; | |
1653 | ||
1654 | if (symbolP) | |
1655 | { | |
43ca9aa6 KR |
1656 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1657 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1658 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1659 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
1660 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 1661 | know (symbolP->sy_frag); |
43ca9aa6 KR |
1662 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
1663 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 1664 | #endif |
6efd877d KR |
1665 | target += S_GET_VALUE (symbolP) |
1666 | + symbolP->sy_frag->fr_address; | |
1667 | } /* if we have a symbol */ | |
1668 | ||
1669 | know (fragP->fr_next); | |
1670 | after = fragP->fr_next->fr_address; | |
1671 | growth = ((target - after) > 0) ? (target - after) : 0; | |
43ca9aa6 KR |
1672 | /* Growth may be negative, but variable part of frag |
1673 | cannot have fewer than 0 chars. That is, we can't | |
1674 | .org backwards. */ | |
6efd877d KR |
1675 | |
1676 | growth -= stretch; /* This is an absolute growth factor */ | |
1677 | break; | |
1678 | ||
1679 | case rs_machine_dependent: | |
a58374d7 ILT |
1680 | #ifdef md_relax_frag |
1681 | growth = md_relax_frag (fragP, stretch); | |
1682 | #else | |
1683 | /* The default way to relax a frag is to look through | |
1684 | md_relax_table. */ | |
6efd877d | 1685 | { |
7f2cb270 KR |
1686 | const relax_typeS *this_type; |
1687 | const relax_typeS *start_type; | |
1688 | relax_substateT next_state; | |
1689 | relax_substateT this_state; | |
80aab579 | 1690 | long aim; |
6efd877d | 1691 | |
7f2cb270 KR |
1692 | this_state = fragP->fr_subtype; |
1693 | start_type = this_type = md_relax_table + this_state; | |
6efd877d KR |
1694 | target = offset; |
1695 | ||
1696 | if (symbolP) | |
1697 | { | |
80aab579 | 1698 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
1699 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1700 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1701 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1702 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
1703 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 1704 | #endif |
6efd877d | 1705 | know (symbolP->sy_frag); |
80aab579 | 1706 | #endif |
43ca9aa6 KR |
1707 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
1708 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
1709 | target += |
1710 | S_GET_VALUE (symbolP) | |
1711 | + symbolP->sy_frag->fr_address; | |
1712 | ||
1713 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
1714 | assume it will move by STRETCH just as we did. |
1715 | If this is not so, it will be because some frag | |
d5364748 KR |
1716 | between grows, and that will force another pass. |
1717 | ||
1718 | Beware zero-length frags. | |
1719 | ||
1720 | There should be a faster way to do this. */ | |
6efd877d KR |
1721 | |
1722 | if (symbolP->sy_frag->fr_address >= was_address | |
1723 | && is_dnrange (fragP, symbolP->sy_frag)) | |
1724 | { | |
1725 | target += stretch; | |
7f2cb270 | 1726 | } |
d5364748 | 1727 | } |
6efd877d KR |
1728 | |
1729 | aim = target - address - fragP->fr_fix; | |
1730 | /* The displacement is affected by the instruction size | |
7f2cb270 KR |
1731 | for the 32k architecture. I think we ought to be able |
1732 | to add fragP->fr_pcrel_adjust in all cases (it should be | |
1733 | zero if not used), but just in case it breaks something | |
1734 | else we'll put this inside #ifdef NS32K ... #endif */ | |
d5364748 KR |
1735 | #ifndef TC_NS32K |
1736 | if (fragP->fr_pcrel_adjust) | |
1737 | abort (); | |
1738 | #endif | |
6efd877d | 1739 | aim += fragP->fr_pcrel_adjust; |
6efd877d KR |
1740 | |
1741 | if (aim < 0) | |
1742 | { | |
1743 | /* Look backwards. */ | |
1744 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1745 | if (aim >= this_type->rlx_backward) |
1746 | next_state = 0; | |
1747 | else | |
1748 | { | |
1749 | /* Grow to next state. */ | |
1750 | this_state = next_state; | |
1751 | this_type = md_relax_table + this_state; | |
1752 | next_state = this_type->rlx_more; | |
1753 | } | |
6efd877d KR |
1754 | } |
1755 | else | |
1756 | { | |
a39116f1 | 1757 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 1758 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 1759 | #endif |
6efd877d KR |
1760 | /* Look forwards. */ |
1761 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1762 | if (aim <= this_type->rlx_forward) |
1763 | next_state = 0; | |
1764 | else | |
1765 | { | |
1766 | /* Grow to next state. */ | |
1767 | this_state = next_state; | |
1768 | this_type = md_relax_table + this_state; | |
1769 | next_state = this_type->rlx_more; | |
1770 | } | |
6efd877d KR |
1771 | } |
1772 | ||
7f2cb270 KR |
1773 | growth = this_type->rlx_length - start_type->rlx_length; |
1774 | if (growth != 0) | |
6efd877d | 1775 | fragP->fr_subtype = this_state; |
7f2cb270 | 1776 | } |
a58374d7 | 1777 | #endif |
7f2cb270 | 1778 | break; |
6efd877d KR |
1779 | |
1780 | default: | |
1781 | BAD_CASE (fragP->fr_type); | |
1782 | break; | |
1783 | } | |
1784 | if (growth) | |
1785 | { | |
1786 | stretch += growth; | |
1787 | stretched++; | |
1788 | } | |
1789 | } /* For each frag in the segment. */ | |
1790 | } | |
1791 | while (stretched); /* Until nothing further to relax. */ | |
1792 | } /* do_relax */ | |
1793 | ||
1794 | /* | |
7f2cb270 KR |
1795 | * We now have valid fr_address'es for each frag. |
1796 | */ | |
6efd877d KR |
1797 | |
1798 | /* | |
7f2cb270 KR |
1799 | * All fr_address's are correct, relative to their own segment. |
1800 | * We have made all the fixS we will ever make. | |
1801 | */ | |
6efd877d | 1802 | } /* relax_segment() */ |
fecd2382 | 1803 | |
80aab579 ILT |
1804 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1805 | ||
fecd2382 | 1806 | /* fixup_segment() |
6efd877d | 1807 | |
fecd2382 RP |
1808 | Go through all the fixS's in a segment and see which ones can be |
1809 | handled now. (These consist of fixS where we have since discovered | |
1810 | the value of a symbol, or the address of the frag involved.) | |
1811 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 1812 | |
fecd2382 RP |
1813 | Result is a count of how many relocation structs will be needed to |
1814 | handle the remaining fixS's that we couldn't completely handle here. | |
1815 | These will be output later by emit_relocations(). */ | |
1816 | ||
09952cd9 | 1817 | static long |
6efd877d | 1818 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 1819 | register fixS *fixP; |
6efd877d | 1820 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 1821 | { |
f5c32424 KR |
1822 | long seg_reloc_count = 0; |
1823 | symbolS *add_symbolP; | |
1824 | symbolS *sub_symbolP; | |
d5364748 | 1825 | valueT add_number; |
f5c32424 KR |
1826 | int size; |
1827 | char *place; | |
1828 | long where; | |
1829 | char pcrel; | |
1830 | fragS *fragP; | |
1831 | segT add_symbol_segment = absolute_section; | |
1832 | ||
1833 | /* If the linker is doing the relaxing, we must not do any fixups. | |
1834 | ||
1835 | Well, strictly speaking that's not true -- we could do any that are | |
1836 | PC-relative and don't cross regions that could change size. And for the | |
1837 | i960 (the only machine for which we've got a relaxing linker right now), | |
1838 | we might be able to turn callx/callj into bal anyways in cases where we | |
1839 | know the maximum displacement. */ | |
6efd877d | 1840 | if (linkrelax) |
f5c32424 KR |
1841 | { |
1842 | for (; fixP; fixP = fixP->fx_next) | |
1843 | seg_reloc_count++; | |
1844 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
1845 | return seg_reloc_count; | |
1846 | } | |
6efd877d | 1847 | |
f5c32424 KR |
1848 | for (; fixP; fixP = fixP->fx_next) |
1849 | { | |
1850 | fragP = fixP->fx_frag; | |
1851 | know (fragP); | |
1852 | where = fixP->fx_where; | |
1853 | place = fragP->fr_literal + where; | |
1854 | size = fixP->fx_size; | |
1855 | add_symbolP = fixP->fx_addsy; | |
1856 | #ifdef TC_VALIDATE_FIX | |
1857 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 1858 | #endif |
f5c32424 KR |
1859 | sub_symbolP = fixP->fx_subsy; |
1860 | add_number = fixP->fx_offset; | |
1861 | pcrel = fixP->fx_pcrel; | |
1862 | ||
1863 | if (add_symbolP) | |
1864 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
1865 | ||
1866 | if (sub_symbolP) | |
1867 | { | |
1868 | if (!add_symbolP) | |
1869 | { | |
1870 | /* Its just -sym */ | |
1871 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) | |
6efd877d | 1872 | add_number -= S_GET_VALUE (sub_symbolP); |
f5c32424 KR |
1873 | else if (pcrel |
1874 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
1875 | { | |
1876 | /* Should try converting to a constant. */ | |
1877 | goto bad_sub_reloc; | |
1878 | } | |
1879 | else | |
1880 | bad_sub_reloc: | |
1881 | as_bad ("Negative of non-absolute symbol %s", | |
1882 | S_GET_NAME (sub_symbolP)); | |
1883 | } | |
1884 | else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment) | |
1885 | && (SEG_NORMAL (add_symbol_segment) | |
1886 | || (add_symbol_segment == absolute_section))) | |
1887 | { | |
1888 | /* Difference of 2 symbols from same segment. | |
1889 | Can't make difference of 2 undefineds: 'value' means | |
1890 | something different for N_UNDF. */ | |
fecd2382 | 1891 | #ifdef TC_I960 |
f5c32424 KR |
1892 | /* Makes no sense to use the difference of 2 arbitrary symbols |
1893 | as the target of a call instruction. */ | |
1894 | if (fixP->fx_tcbit) | |
1895 | as_bad ("callj to difference of 2 symbols"); | |
6efd877d | 1896 | #endif /* TC_I960 */ |
f5c32424 KR |
1897 | add_number += S_GET_VALUE (add_symbolP) - |
1898 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 1899 | |
f5c32424 | 1900 | add_symbolP = NULL; |
335d35c8 | 1901 | |
f5c32424 KR |
1902 | /* Let the target machine make the final determination |
1903 | as to whether or not a relocation will be needed to | |
1904 | handle this fixup. */ | |
1905 | if (!TC_FORCE_RELOCATION (fixP)) | |
1906 | fixP->fx_addsy = NULL; | |
1907 | } | |
1908 | else | |
1909 | { | |
1910 | /* Different segments in subtraction. */ | |
1911 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
1912 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
1913 | ||
1914 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
1915 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 1916 | |
80aab579 | 1917 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
1918 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
1919 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
1920 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
1921 | pc-relative mode. */ | |
1922 | && pcrel | |
0f894895 | 1923 | #endif |
f5c32424 KR |
1924 | ) |
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 | } | |
80aab579 | 1934 | #endif |
f5c32424 KR |
1935 | else |
1936 | { | |
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.", | |
1940 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
1941 | S_GET_NAME (sub_symbolP), buf); | |
1942 | } | |
1943 | } | |
1944 | } | |
6efd877d | 1945 | |
f5c32424 KR |
1946 | if (add_symbolP) |
1947 | { | |
1948 | if (add_symbol_segment == this_segment_type && pcrel) | |
1949 | { | |
1950 | /* | |
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 |
f5c32424 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. */ | |
1961 | reloc_callj (fixP); | |
fecd2382 | 1962 | #endif /* TC_I960 */ |
6efd877d | 1963 | |
f5c32424 KR |
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. */ | |
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; | |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | if (add_symbol_segment == absolute_section) | |
1977 | { | |
fecd2382 | 1978 | #ifdef TC_I960 |
f5c32424 KR |
1979 | /* See comment about reloc_callj() above. */ |
1980 | reloc_callj (fixP); | |
fecd2382 | 1981 | #endif /* TC_I960 */ |
f5c32424 KR |
1982 | add_number += S_GET_VALUE (add_symbolP); |
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)) | |
e67a0640 KR |
1988 | { |
1989 | fixP->fx_addsy = NULL; | |
1990 | add_symbolP = NULL; | |
1991 | } | |
f5c32424 KR |
1992 | } |
1993 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 1994 | #ifdef BFD_ASSEMBLER |
f5c32424 | 1995 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 1996 | #endif |
f5c32424 KR |
1997 | ) |
1998 | { | |
fecd2382 | 1999 | #ifdef TC_I960 |
f5c32424 KR |
2000 | if ((int) fixP->fx_bit_fixP == 13) |
2001 | { | |
2002 | /* This is a COBR instruction. They have only a | |
2003 | * 13-bit displacement and are only to be used | |
2004 | * for local branches: flag as error, don't generate | |
2005 | * relocation. | |
2006 | */ | |
2007 | as_bad ("can't use COBR format with external label"); | |
2008 | ||
2009 | /* Let the target machine make the final determination | |
2010 | as to whether or not a relocation will be needed to | |
2011 | handle this fixup. */ | |
2012 | if (!TC_FORCE_RELOCATION (fixP)) | |
2013 | fixP->fx_addsy = NULL; | |
2014 | continue; | |
2015 | } /* COBR */ | |
fecd2382 | 2016 | #endif /* TC_I960 */ |
f5c32424 | 2017 | |
fecd2382 | 2018 | #ifdef OBJ_COFF |
c593cf41 | 2019 | #ifdef TE_I386AIX |
f5c32424 KR |
2020 | if (S_IS_COMMON (add_symbolP)) |
2021 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2022 | #endif /* TE_I386AIX */ |
fecd2382 | 2023 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2024 | ++seg_reloc_count; |
2025 | } | |
2026 | else | |
2027 | { | |
2028 | seg_reloc_count++; | |
2029 | add_number += S_GET_VALUE (add_symbolP); | |
2030 | } | |
2031 | } | |
2032 | } | |
6efd877d | 2033 | |
f5c32424 KR |
2034 | if (pcrel) |
2035 | { | |
2036 | add_number -= md_pcrel_from (fixP); | |
2037 | if (add_symbolP == 0) | |
2038 | { | |
2039 | fixP->fx_addsy = &abs_symbol; | |
2040 | ++seg_reloc_count; | |
2041 | } /* if there's an add_symbol */ | |
2042 | } /* if pcrel */ | |
6efd877d | 2043 | |
f5c32424 KR |
2044 | if (!fixP->fx_bit_fixP && size > 0) |
2045 | { | |
2046 | valueT mask = 0; | |
2047 | /* set all bits to one */ | |
2048 | mask--; | |
2049 | /* Technically speaking, combining these produces an | |
2050 | undefined result if size is sizeof (valueT), though I | |
2051 | think these two half-way operations should both be | |
2052 | defined. */ | |
2053 | mask <<= size * 4; | |
2054 | mask <<= size * 4; | |
2055 | if ((add_number & mask) != 0 | |
2056 | && (add_number & mask) != mask) | |
2057 | { | |
2058 | char buf[50], buf2[50]; | |
2059 | sprint_value (buf, fragP->fr_address + where); | |
2060 | if (add_number > 1000) | |
2061 | sprint_value (buf2, add_number); | |
2062 | else | |
2063 | sprintf (buf2, "%ld", (long) add_number); | |
84fa9814 | 2064 | as_bad_where (fixP->fx_file, fixP->fx_line, |
f5c32424 KR |
2065 | "Value of %s too large for field of %d bytes at %s", |
2066 | buf2, size, buf); | |
2067 | } /* generic error checking */ | |
2068 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
2069 | /* Warn if a .word value is too large when treated as a signed | |
2070 | number. We already know it is not too negative. This is to | |
2071 | catch over-large switches generated by gcc on the 68k. */ | |
2072 | if (!flagseen['J'] | |
2073 | && size == 2 | |
2074 | && add_number > 0x7fff) | |
2075 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2076 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2077 | (long) add_number, | |
2078 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2079 | #endif |
f5c32424 | 2080 | } /* not a bit fix */ |
6efd877d | 2081 | |
43ca9aa6 | 2082 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2083 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2084 | #else |
f5c32424 | 2085 | md_apply_fix (fixP, add_number); |
43ca9aa6 | 2086 | #endif |
f5c32424 KR |
2087 | skip: |
2088 | ; | |
2089 | } /* For each fixS in this segment. */ | |
6efd877d | 2090 | |
f5c32424 KR |
2091 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2092 | return seg_reloc_count; | |
2093 | } | |
6efd877d | 2094 | |
f5c32424 | 2095 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
6efd877d | 2096 | |
f5c32424 KR |
2097 | void |
2098 | number_to_chars_bigendian (buf, val, n) | |
2099 | char *buf; | |
2100 | valueT val; | |
2101 | int n; | |
2102 | { | |
2103 | if (n > sizeof (val)|| n <= 0) | |
2104 | abort (); | |
2105 | while (n--) | |
2106 | { | |
2107 | buf[n] = val & 0xff; | |
2108 | val >>= 8; | |
2109 | } | |
d5364748 | 2110 | } |
fecd2382 | 2111 | |
f5c32424 KR |
2112 | void |
2113 | number_to_chars_littleendian (buf, val, n) | |
2114 | char *buf; | |
2115 | valueT val; | |
2116 | int n; | |
2117 | { | |
2118 | if (n > sizeof (val) || n <= 0) | |
2119 | abort (); | |
2120 | while (n--) | |
2121 | { | |
2122 | *buf++ = val & 0xff; | |
2123 | val >>= 8; | |
2124 | } | |
2125 | } | |
80aab579 | 2126 | |
fecd2382 | 2127 | /* end of write.c */ |