Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* write.c - emit .o file |
98c6bbbe | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 1994 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; |
98c6bbbe | 129 | fixP->fx_done = 0; |
43ca9aa6 KR |
130 | |
131 | #ifdef TC_something | |
132 | fixP->fx_bsr = 0; | |
133 | #endif | |
43ca9aa6 | 134 | |
84fa9814 KR |
135 | as_where (&fixP->fx_file, &fixP->fx_line); |
136 | ||
43ca9aa6 KR |
137 | /* Usually, we want relocs sorted numerically, but while |
138 | comparing to older versions of gas that have relocs | |
139 | reverse sorted, it is convenient to have this compile | |
140 | time option. xoxorich. */ | |
141 | ||
142 | { | |
6efd877d | 143 | |
43ca9aa6 | 144 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
145 | fixS **seg_fix_rootP = &frchain_now->fix_root; |
146 | fixS **seg_fix_tailP = &frchain_now->fix_tail; | |
43ca9aa6 | 147 | #endif |
09952cd9 | 148 | |
f6e504fe | 149 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 150 | |
43ca9aa6 KR |
151 | fixP->fx_next = *seg_fix_rootP; |
152 | *seg_fix_rootP = fixP; | |
6efd877d | 153 | |
f6e504fe | 154 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 155 | |
43ca9aa6 | 156 | fixP->fx_next = NULL; |
6efd877d | 157 | |
43ca9aa6 KR |
158 | if (*seg_fix_tailP) |
159 | (*seg_fix_tailP)->fx_next = fixP; | |
160 | else | |
161 | *seg_fix_rootP = fixP; | |
162 | *seg_fix_tailP = fixP; | |
6efd877d | 163 | |
f6e504fe | 164 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 165 | |
43ca9aa6 KR |
166 | } |
167 | ||
168 | return fixP; | |
169 | } | |
170 | ||
5ac34ac3 ILT |
171 | /* Create a fixup relative to a symbol (plus a constant). */ |
172 | ||
173 | fixS * | |
174 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
175 | fragS *frag; /* Which frag? */ | |
176 | int where; /* Where in that frag? */ | |
177 | short int size; /* 1, 2, or 4 usually. */ | |
178 | symbolS *add_symbol; /* X_add_symbol. */ | |
179 | offsetT offset; /* X_add_number. */ | |
180 | int pcrel; /* TRUE if PC-relative relocation. */ | |
181 | #ifdef BFD_ASSEMBLER | |
182 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
183 | #else | |
184 | int r_type; /* Relocation type */ | |
185 | #endif | |
186 | { | |
187 | return fix_new_internal (frag, where, size, add_symbol, | |
188 | (symbolS *) NULL, offset, pcrel, r_type); | |
189 | } | |
190 | ||
191 | /* Create a fixup for an expression. Currently we only support fixups | |
192 | for difference expressions. That is itself more than most object | |
193 | file formats support anyhow. */ | |
194 | ||
195 | fixS * | |
196 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
197 | fragS *frag; /* Which frag? */ | |
198 | int where; /* Where in that frag? */ | |
199 | short int size; /* 1, 2, or 4 usually. */ | |
200 | expressionS *exp; /* Expression. */ | |
201 | int pcrel; /* TRUE if PC-relative relocation. */ | |
202 | #ifdef BFD_ASSEMBLER | |
203 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
204 | #else | |
205 | int r_type; /* Relocation type */ | |
206 | #endif | |
207 | { | |
208 | symbolS *add = NULL; | |
209 | symbolS *sub = NULL; | |
210 | offsetT off = 0; | |
211 | ||
212 | switch (exp->X_op) | |
213 | { | |
214 | case O_absent: | |
215 | break; | |
216 | ||
b23f6743 KR |
217 | case O_uminus: |
218 | sub = exp->X_add_symbol; | |
219 | off = exp->X_add_number; | |
220 | break; | |
221 | ||
5ac34ac3 ILT |
222 | case O_subtract: |
223 | sub = exp->X_op_symbol; | |
224 | /* Fall through. */ | |
225 | case O_symbol: | |
226 | add = exp->X_add_symbol; | |
227 | /* Fall through. */ | |
228 | case O_constant: | |
229 | off = exp->X_add_number; | |
230 | break; | |
231 | ||
232 | default: | |
233 | as_bad ("expression too complex for fixup"); | |
234 | } | |
235 | ||
236 | return fix_new_internal (frag, where, size, add, sub, off, | |
237 | pcrel, r_type); | |
238 | } | |
239 | ||
43ca9aa6 KR |
240 | /* Append a string onto another string, bumping the pointer along. */ |
241 | void | |
242 | append (charPP, fromP, length) | |
243 | char **charPP; | |
244 | char *fromP; | |
245 | unsigned long length; | |
246 | { | |
247 | /* Don't trust memcpy() of 0 chars. */ | |
248 | if (length == 0) | |
249 | return; | |
250 | ||
80aab579 | 251 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
252 | *charPP += length; |
253 | } | |
254 | ||
255 | #ifndef BFD_ASSEMBLER | |
256 | int section_alignment[SEG_MAXIMUM_ORDINAL]; | |
257 | #endif | |
258 | ||
259 | /* | |
260 | * This routine records the largest alignment seen for each segment. | |
261 | * If the beginning of the segment is aligned on the worst-case | |
262 | * boundary, all of the other alignments within it will work. At | |
263 | * least one object format really uses this info. | |
264 | */ | |
265 | void | |
266 | record_alignment (seg, align) | |
267 | /* Segment to which alignment pertains */ | |
268 | segT seg; | |
269 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
270 | boundary, etc.) */ | |
271 | int align; | |
272 | { | |
273 | #ifdef BFD_ASSEMBLER | |
274 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
275 | bfd_set_section_alignment (stdoutput, seg, align); | |
276 | #else | |
277 | if (align > section_alignment[(int) seg]) | |
278 | section_alignment[(int) seg] = align; | |
279 | #endif | |
280 | } | |
281 | ||
282 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) | |
283 | ||
284 | static fragS * | |
285 | chain_frchains_together_1 (section, frchp) | |
286 | segT section; | |
287 | struct frchain *frchp; | |
288 | { | |
289 | fragS dummy, *prev_frag = &dummy; | |
262b22cd ILT |
290 | fixS fix_dummy, *prev_fix = &fix_dummy; |
291 | ||
43ca9aa6 KR |
292 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) |
293 | { | |
294 | prev_frag->fr_next = frchp->frch_root; | |
295 | prev_frag = frchp->frch_last; | |
3a0e38ee | 296 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
297 | if (frchp->fix_root != (fixS *) NULL) |
298 | { | |
299 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
300 | seg_info (section)->fix_root = frchp->fix_root; | |
301 | prev_fix->fx_next = frchp->fix_root; | |
302 | prev_fix = frchp->fix_tail; | |
303 | } | |
3a0e38ee | 304 | #endif |
43ca9aa6 KR |
305 | } |
306 | prev_frag->fr_next = 0; | |
307 | return prev_frag; | |
308 | } | |
309 | ||
310 | #endif | |
311 | ||
312 | #ifdef BFD_ASSEMBLER | |
313 | ||
314 | static void | |
315 | chain_frchains_together (abfd, section, xxx) | |
316 | bfd *abfd; /* unused */ | |
317 | segT section; | |
a58374d7 | 318 | PTR xxx; /* unused */ |
43ca9aa6 | 319 | { |
f2f7d044 ILT |
320 | segment_info_type *info; |
321 | ||
322 | /* BFD may have introduced its own sections without using | |
323 | subseg_new, so it is possible that seg_info is NULL. */ | |
324 | info = seg_info (section); | |
325 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
326 | info->frchainP->frch_last |
327 | = chain_frchains_together_1 (section, info->frchainP); | |
43ca9aa6 KR |
328 | } |
329 | ||
330 | #endif | |
542e1629 | 331 | |
d5364748 | 332 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 333 | |
6efd877d KR |
334 | void |
335 | remove_subsegs (head, seg, root, last) | |
336 | frchainS *head; | |
337 | int seg; | |
338 | fragS **root; | |
339 | fragS **last; | |
65bfcf2e | 340 | { |
65bfcf2e | 341 | *root = head->frch_root; |
43ca9aa6 KR |
342 | *last = chain_frchains_together_1 (seg, head); |
343 | } | |
344 | ||
345 | #endif /* BFD */ | |
346 | ||
80aab579 ILT |
347 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
348 | ||
43ca9aa6 | 349 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
350 | static void |
351 | cvt_frag_to_fill (sec, fragP) | |
352 | segT sec; | |
43ca9aa6 | 353 | fragS *fragP; |
43ca9aa6 | 354 | #else |
58d4951d ILT |
355 | static void |
356 | cvt_frag_to_fill (headers, fragP) | |
357 | object_headers *headers; | |
358 | fragS *fragP; | |
43ca9aa6 | 359 | #endif |
58d4951d | 360 | { |
43ca9aa6 | 361 | switch (fragP->fr_type) |
6efd877d | 362 | { |
43ca9aa6 KR |
363 | case rs_align: |
364 | case rs_org: | |
365 | #ifdef HANDLE_ALIGN | |
366 | HANDLE_ALIGN (fragP); | |
367 | #endif | |
368 | fragP->fr_type = rs_fill; | |
43ca9aa6 | 369 | know (fragP->fr_next != NULL); |
43ca9aa6 KR |
370 | fragP->fr_offset = (fragP->fr_next->fr_address |
371 | - fragP->fr_address | |
98c6bbbe | 372 | - fragP->fr_fix) / fragP->fr_var; |
43ca9aa6 | 373 | break; |
65bfcf2e | 374 | |
43ca9aa6 KR |
375 | case rs_fill: |
376 | break; | |
377 | ||
378 | case rs_machine_dependent: | |
379 | #ifdef BFD_ASSEMBLER | |
380 | md_convert_frag (stdoutput, sec, fragP); | |
381 | #else | |
382 | md_convert_frag (headers, fragP); | |
383 | #endif | |
384 | ||
d5364748 | 385 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
386 | |
387 | /* | |
388 | * After md_convert_frag, we make the frag into a ".space 0". | |
389 | * Md_convert_frag() should set up any fixSs and constants | |
390 | * required. | |
391 | */ | |
392 | frag_wane (fragP); | |
393 | break; | |
394 | ||
395 | #ifndef WORKING_DOT_WORD | |
396 | case rs_broken_word: | |
397 | { | |
398 | struct broken_word *lie; | |
399 | ||
400 | if (fragP->fr_subtype) | |
401 | { | |
402 | fragP->fr_fix += md_short_jump_size; | |
403 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
404 | lie && lie->dispfrag == fragP; | |
405 | lie = lie->next_broken_word) | |
406 | if (lie->added == 1) | |
407 | fragP->fr_fix += md_long_jump_size; | |
408 | } | |
409 | frag_wane (fragP); | |
410 | } | |
411 | break; | |
412 | #endif | |
413 | ||
414 | default: | |
415 | BAD_CASE (fragP->fr_type); | |
416 | break; | |
6efd877d | 417 | } |
65bfcf2e | 418 | } |
6efd877d | 419 | |
80aab579 ILT |
420 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
421 | ||
43ca9aa6 KR |
422 | #ifdef BFD_ASSEMBLER |
423 | static void | |
424 | relax_and_size_seg (abfd, sec, xxx) | |
425 | bfd *abfd; | |
426 | asection *sec; | |
a58374d7 | 427 | PTR xxx; |
43ca9aa6 KR |
428 | { |
429 | flagword flags; | |
13e9182d KR |
430 | fragS *fragp; |
431 | segment_info_type *seginfo; | |
432 | int x; | |
433 | valueT size, newsize; | |
43ca9aa6 KR |
434 | |
435 | flags = bfd_get_section_flags (abfd, sec); | |
436 | ||
13e9182d KR |
437 | seginfo = (segment_info_type *) bfd_get_section_userdata (abfd, sec); |
438 | if (seginfo && seginfo->frchainP) | |
43ca9aa6 | 439 | { |
13e9182d KR |
440 | relax_segment (seginfo->frchainP->frch_root, sec); |
441 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
442 | cvt_frag_to_fill (sec, fragp); | |
443 | for (fragp = seginfo->frchainP->frch_root; | |
444 | fragp->fr_next; | |
445 | fragp = fragp->fr_next) | |
446 | /* walk to last elt */; | |
447 | size = fragp->fr_address + fragp->fr_fix; | |
448 | } | |
449 | else | |
450 | size = 0; | |
a58374d7 ILT |
451 | |
452 | if (size > 0 && ! seginfo->bss) | |
453 | flags |= SEC_HAS_CONTENTS; | |
454 | ||
455 | /* @@ This is just an approximation. */ | |
5f6efd5a | 456 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
457 | flags |= SEC_RELOC; |
458 | else | |
459 | flags &= ~SEC_RELOC; | |
460 | x = bfd_set_section_flags (abfd, sec, flags); | |
461 | assert (x == true); | |
462 | ||
20b39b6f JL |
463 | newsize = md_section_align (sec, size); |
464 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
465 | assert (x == true); |
466 | ||
467 | /* If the size had to be rounded up, add some padding in the last | |
468 | non-empty frag. */ | |
13e9182d KR |
469 | assert (newsize >= size); |
470 | if (size != newsize) | |
471 | { | |
472 | fragS *last = seginfo->frchainP->frch_last; | |
473 | fragp = seginfo->frchainP->frch_root; | |
474 | while (fragp->fr_next != last) | |
475 | fragp = fragp->fr_next; | |
476 | last->fr_address = size; | |
477 | fragp->fr_offset += newsize - size; | |
478 | } | |
479 | ||
43ca9aa6 KR |
480 | #ifdef tc_frob_section |
481 | tc_frob_section (sec); | |
482 | #endif | |
483 | #ifdef obj_frob_section | |
484 | obj_frob_section (sec); | |
485 | #endif | |
486 | } | |
487 | ||
d5364748 KR |
488 | #ifdef DEBUG2 |
489 | static void | |
490 | dump_section_relocs (abfd, sec, stream_) | |
491 | bfd *abfd; | |
492 | asection *sec; | |
493 | char *stream_; | |
494 | { | |
495 | FILE *stream = (FILE *) stream_; | |
496 | segment_info_type *seginfo = seg_info (sec); | |
497 | fixS *fixp = seginfo->fix_root; | |
498 | ||
499 | if (!fixp) | |
500 | return; | |
501 | ||
502 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
503 | while (fixp) | |
504 | { | |
505 | symbolS *s = fixp->fx_addsy; | |
506 | if (s) | |
507 | fprintf (stream, " %08x: %s(%s+%x)+%x\n", fixp, | |
508 | S_GET_NAME (s), s->bsym->section->name, | |
509 | S_GET_VALUE (s), fixp->fx_offset); | |
510 | else | |
511 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
512 | fixp = fixp->fx_next; | |
513 | } | |
514 | } | |
515 | #else | |
516 | #define dump_section_relocs(ABFD,SEC,STREAM) (void)(ABFD,SEC,STREAM) | |
517 | #endif | |
518 | ||
98c6bbbe KR |
519 | #ifndef EMIT_SECTION_SYMBOLS |
520 | #define EMIT_SECTION_SYMBOLS 1 | |
521 | #endif | |
522 | ||
d5364748 KR |
523 | static void |
524 | adjust_reloc_syms (abfd, sec, xxx) | |
525 | bfd *abfd; | |
526 | asection *sec; | |
a58374d7 | 527 | PTR xxx; |
d5364748 KR |
528 | { |
529 | segment_info_type *seginfo = seg_info (sec); | |
530 | fixS *fixp; | |
531 | ||
532 | if (seginfo == NULL) | |
533 | return; | |
534 | ||
535 | dump_section_relocs (abfd, sec, stderr); | |
536 | ||
537 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
98c6bbbe KR |
538 | if (fixp->fx_done) |
539 | /* ignore it */; | |
540 | else if (fixp->fx_addsy) | |
d5364748 KR |
541 | { |
542 | symbolS *sym = fixp->fx_addsy; | |
543 | asection *symsec = sym->bsym->section; | |
d5364748 | 544 | |
a58374d7 ILT |
545 | /* If it's one of these sections, assume the symbol is |
546 | definitely going to be output. The code in | |
547 | md_estimate_size_before_relax in tc-mips.c uses this test | |
548 | as well, so if you change this code you should look at that | |
549 | code. */ | |
d5364748 KR |
550 | if (symsec == &bfd_und_section |
551 | || symsec == &bfd_abs_section | |
552 | || bfd_is_com_section (symsec)) | |
80aab579 ILT |
553 | { |
554 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
555 | continue; | |
556 | } | |
d5364748 KR |
557 | |
558 | /* Since we're reducing to section symbols, don't attempt to reduce | |
559 | anything that's already using one. */ | |
98c6bbbe | 560 | if (sym->bsym->flags & BSF_SECTION_SYM) |
80aab579 ILT |
561 | { |
562 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
563 | continue; | |
564 | } | |
d5364748 KR |
565 | |
566 | /* Is there some other reason we can't adjust this one? (E.g., | |
567 | call/bal links in i960-bout symbols.) */ | |
568 | #ifdef obj_fix_adjustable | |
569 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
570 | { |
571 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
572 | continue; | |
573 | } | |
d5364748 | 574 | #endif |
efa0c22e KR |
575 | |
576 | /* Is there some other (target cpu dependent) reason we can't adjust | |
577 | this one? (E.g. relocations involving function addresses on | |
578 | the PA. */ | |
579 | #ifdef tc_fix_adjustable | |
580 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
581 | { |
582 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
583 | continue; | |
584 | } | |
efa0c22e KR |
585 | #endif |
586 | ||
d5364748 KR |
587 | /* If the section symbol isn't going to be output, the relocs |
588 | at least should still work. If not, figure out what to do | |
589 | when we run into that case. */ | |
590 | fixp->fx_offset += S_GET_VALUE (sym); | |
591 | if (sym->sy_frag) | |
592 | fixp->fx_offset += sym->sy_frag->fr_address; | |
6868afe6 | 593 | fixp->fx_addsy = section_symbol (symsec); |
80aab579 | 594 | fixp->fx_addsy->sy_used_in_reloc = 1; |
d5364748 | 595 | } |
e67a0640 KR |
596 | #ifdef RELOC_REQUIRES_SYMBOL |
597 | else | |
598 | { | |
599 | /* There was no symbol required by this relocation. However, | |
600 | BFD doesn't really handle relocations without symbols well. | |
601 | (At least, the COFF support doesn't.) So for now we fake up | |
602 | a local symbol in the absolute section. */ | |
603 | static symbolS *abs_sym; | |
604 | if (!abs_sym) | |
605 | { | |
98c6bbbe | 606 | abs_sym = section_symbol (absolute_section); |
e67a0640 KR |
607 | abs_sym->sy_used_in_reloc = 1; |
608 | } | |
609 | fixp->fx_addsy = abs_sym; | |
610 | } | |
611 | #endif | |
d5364748 KR |
612 | |
613 | dump_section_relocs (abfd, sec, stderr); | |
614 | } | |
615 | ||
43ca9aa6 | 616 | static void |
8d6c34a1 | 617 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
618 | bfd *abfd; |
619 | asection *sec; | |
a58374d7 | 620 | PTR xxx; |
43ca9aa6 KR |
621 | { |
622 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
623 | int i; |
624 | unsigned int n; | |
43ca9aa6 KR |
625 | arelent **relocs; |
626 | fixS *fixp; | |
98c6bbbe | 627 | char *err; |
43ca9aa6 | 628 | |
d5364748 KR |
629 | /* If seginfo is NULL, we did not create this section; don't do |
630 | anything with it. */ | |
631 | if (seginfo == NULL) | |
43ca9aa6 KR |
632 | return; |
633 | ||
634 | fixup_segment (seginfo->fix_root, sec); | |
635 | ||
3d3c5039 | 636 | n = 0; |
d5364748 KR |
637 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
638 | n++; | |
43ca9aa6 | 639 | |
d5364748 | 640 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 641 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
642 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
643 | n * sizeof (arelent *)); | |
8d6c34a1 | 644 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 645 | |
3d3c5039 ILT |
646 | i = 0; |
647 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
648 | { | |
649 | arelent *reloc; | |
3d3c5039 ILT |
650 | char *data; |
651 | bfd_reloc_status_type s; | |
652 | ||
98c6bbbe | 653 | if (fixp->fx_done) |
3d3c5039 | 654 | { |
3d3c5039 ILT |
655 | n--; |
656 | continue; | |
657 | } | |
658 | reloc = tc_gen_reloc (sec, fixp); | |
659 | if (!reloc) | |
660 | { | |
661 | n--; | |
662 | continue; | |
663 | } | |
664 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 665 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
666 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
667 | abort (); | |
335d35c8 | 668 | |
84fa9814 KR |
669 | if (reloc->howto->partial_inplace == false |
670 | && reloc->howto->pcrel_offset == true | |
671 | && reloc->howto->pc_relative == true) | |
672 | { | |
673 | /* bfd_perform_relocation screws this up */ | |
674 | reloc->addend += reloc->address; | |
675 | } | |
335d35c8 | 676 | /* Pass bogus address so that when bfd_perform_relocation adds |
f5c32424 KR |
677 | `reloc->address' back in, it'll come up with `data', which is where |
678 | we want it to operate. We can't just do it by fudging reloc->address, | |
679 | since that might be used in the calculations(?). */ | |
3d3c5039 | 680 | s = bfd_perform_relocation (stdoutput, reloc, data - reloc->address, |
98c6bbbe | 681 | sec, stdoutput, &err); |
3d3c5039 ILT |
682 | switch (s) |
683 | { | |
684 | case bfd_reloc_ok: | |
685 | break; | |
686 | default: | |
687 | as_fatal ("bad return from bfd_perform_relocation"); | |
688 | } | |
689 | relocs[i++] = reloc; | |
690 | } | |
d5364748 KR |
691 | #else |
692 | n = n * MAX_RELOC_EXPANSION; | |
693 | /* Set up reloc information as well. */ | |
694 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
695 | n * sizeof (arelent *)); | |
696 | ||
697 | i = 0; | |
698 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
699 | { | |
700 | arelent **reloc; | |
d5364748 KR |
701 | char *data; |
702 | bfd_reloc_status_type s; | |
703 | int j; | |
704 | ||
98c6bbbe | 705 | if (fixp->fx_done) |
d5364748 | 706 | { |
d5364748 KR |
707 | n--; |
708 | continue; | |
709 | } | |
710 | reloc = tc_gen_reloc (sec, fixp); | |
711 | ||
712 | for (j = 0; reloc[j]; j++) | |
713 | { | |
714 | relocs[i++] = reloc[j]; | |
715 | assert(i <= n); | |
716 | } | |
717 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 718 | if (fixp->fx_where + fixp->fx_size |
d5364748 KR |
719 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
720 | abort (); | |
721 | for (j = 0; reloc[j]; j++) | |
722 | { | |
98c6bbbe | 723 | s = bfd_perform_relocation (stdoutput, reloc[j], |
a58374d7 | 724 | data - reloc[0]->address, |
98c6bbbe | 725 | sec, stdoutput, &err); |
d5364748 KR |
726 | switch (s) |
727 | { | |
98c6bbbe KR |
728 | case bfd_reloc_ok: |
729 | break; | |
730 | default: | |
731 | as_fatal ("bad return from bfd_perform_relocation"); | |
d5364748 KR |
732 | } |
733 | } | |
734 | } | |
735 | n = i; | |
736 | #endif | |
737 | ||
3d3c5039 ILT |
738 | if (n) |
739 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
740 | else |
741 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
742 | (bfd_get_section_flags (abfd, sec) |
743 | & (flagword) ~SEC_RELOC)); | |
98c6bbbe KR |
744 | |
745 | #ifdef DEBUG3 | |
d5364748 KR |
746 | { |
747 | int i; | |
748 | arelent *r; | |
749 | asymbol *s; | |
750 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
751 | for (i = 0; i < n; i++) | |
752 | { | |
753 | r = relocs[i]; | |
754 | s = *r->sym_ptr_ptr; | |
755 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
756 | i, r, r->address, s->name, r->addend); | |
757 | } | |
758 | } | |
759 | #endif | |
8d6c34a1 | 760 | } |
d5364748 | 761 | |
8d6c34a1 KR |
762 | static void |
763 | write_contents (abfd, sec, xxx) | |
764 | bfd *abfd; | |
765 | asection *sec; | |
a58374d7 | 766 | PTR xxx; |
8d6c34a1 KR |
767 | { |
768 | segment_info_type *seginfo = seg_info (sec); | |
769 | unsigned long offset = 0; | |
80aab579 | 770 | fragS *f; |
3d3c5039 ILT |
771 | |
772 | /* Write out the frags. */ | |
f37449aa ILT |
773 | if (seginfo == NULL |
774 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
775 | return; |
776 | ||
80aab579 ILT |
777 | for (f = seginfo->frchainP->frch_root; |
778 | f; | |
779 | f = f->fr_next) | |
43ca9aa6 KR |
780 | { |
781 | int x; | |
782 | unsigned long fill_size; | |
783 | char *fill_literal; | |
784 | long count; | |
785 | ||
80aab579 ILT |
786 | assert (f->fr_type == rs_fill); |
787 | if (f->fr_fix) | |
43ca9aa6 KR |
788 | { |
789 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
790 | f->fr_literal, (file_ptr) offset, |
791 | (bfd_size_type) f->fr_fix); | |
43ca9aa6 | 792 | assert (x == true); |
80aab579 | 793 | offset += f->fr_fix; |
43ca9aa6 | 794 | } |
80aab579 ILT |
795 | fill_literal = f->fr_literal + f->fr_fix; |
796 | fill_size = f->fr_var; | |
797 | count = f->fr_offset; | |
43ca9aa6 KR |
798 | assert (count >= 0); |
799 | if (fill_size && count) | |
800 | while (count--) | |
801 | { | |
802 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 | 803 | fill_literal, (file_ptr) offset, |
d5364748 | 804 | (bfd_size_type) fill_size); |
43ca9aa6 KR |
805 | assert (x == true); |
806 | offset += fill_size; | |
807 | } | |
808 | } | |
43ca9aa6 KR |
809 | } |
810 | #endif | |
811 | ||
80aab579 | 812 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
813 | static void |
814 | merge_data_into_text () | |
815 | { | |
4064305e | 816 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
817 | seg_info (text_section)->frchainP->frch_last->fr_next = |
818 | seg_info (data_section)->frchainP->frch_root; | |
819 | seg_info (text_section)->frchainP->frch_last = | |
820 | seg_info (data_section)->frchainP->frch_last; | |
821 | seg_info (data_section)->frchainP = 0; | |
822 | #else | |
823 | fixS *tmp; | |
824 | ||
825 | text_last_frag->fr_next = data_frag_root; | |
826 | text_last_frag = data_last_frag; | |
827 | data_last_frag = NULL; | |
828 | data_frag_root = NULL; | |
829 | if (text_fix_root) | |
830 | { | |
831 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
832 | tmp->fx_next = data_fix_root; | |
833 | text_fix_tail = data_fix_tail; | |
834 | } | |
835 | else | |
836 | text_fix_root = data_fix_root; | |
837 | data_fix_root = NULL; | |
838 | #endif | |
839 | } | |
80aab579 | 840 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
841 | |
842 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
843 | static void | |
844 | relax_and_size_all_segments () | |
845 | { | |
13e9182d KR |
846 | fragS *fragP; |
847 | ||
b23f6743 KR |
848 | relax_segment (text_frag_root, SEG_TEXT); |
849 | relax_segment (data_frag_root, SEG_DATA); | |
850 | relax_segment (bss_frag_root, SEG_BSS); | |
851 | /* | |
852 | * Now the addresses of frags are correct within the segment. | |
853 | */ | |
854 | ||
855 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
856 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
857 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
858 | ||
859 | /* | |
860 | * Join the 2 segments into 1 huge segment. | |
861 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
862 | * Then join the data frags after the text frags. | |
863 | * | |
864 | * Determine a_data [length of data segment]. | |
865 | */ | |
866 | if (data_frag_root) | |
867 | { | |
868 | register relax_addressT slide; | |
869 | ||
870 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
871 | ||
872 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
873 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
874 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
875 | #ifdef OBJ_BOUT | |
876 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
877 | /* For b.out: If the data section has a strict alignment | |
878 | requirement, its load address in the .o file will be | |
879 | rounded up from the size of the text section. These | |
880 | two values are *not* the same! Similarly for the bss | |
881 | section.... */ | |
882 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
883 | #endif | |
884 | ||
885 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
886 | { | |
887 | fragP->fr_address += slide; | |
888 | } /* for each data frag */ | |
889 | ||
890 | know (text_last_frag != 0); | |
891 | text_last_frag->fr_next = data_frag_root; | |
892 | } | |
893 | else | |
894 | { | |
895 | H_SET_DATA_SIZE (&headers, 0); | |
896 | } | |
897 | ||
898 | #ifdef OBJ_BOUT | |
899 | /* See above comments on b.out data section address. */ | |
900 | { | |
901 | long bss_vma; | |
902 | if (data_last_frag == 0) | |
903 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
904 | else | |
905 | bss_vma = data_last_frag->fr_address; | |
906 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
907 | bss_address_frag.fr_address = bss_vma; | |
908 | } | |
909 | #else /* ! OBJ_BOUT */ | |
910 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
911 | H_GET_DATA_SIZE (&headers)); | |
912 | ||
efa0c22e | 913 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
914 | |
915 | /* Slide all the frags */ | |
916 | if (bss_frag_root) | |
917 | { | |
918 | relax_addressT slide = bss_address_frag.fr_address; | |
919 | ||
920 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
921 | { | |
922 | fragP->fr_address += slide; | |
923 | } /* for each bss frag */ | |
924 | } | |
925 | ||
b23f6743 KR |
926 | if (bss_last_frag) |
927 | H_SET_BSS_SIZE (&headers, | |
928 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
929 | else | |
930 | H_SET_BSS_SIZE (&headers, 0); | |
931 | } | |
932 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
933 | ||
d5364748 KR |
934 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
935 | ||
6efd877d KR |
936 | void |
937 | write_object_file () | |
45432836 | 938 | { |
6efd877d | 939 | register struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 940 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
6efd877d | 941 | register fragS *fragP; /* Track along all frags. */ |
58d4951d | 942 | #endif |
d5364748 | 943 | #if !defined (BFD_ASSEMBLER) && !defined (OBJ_VMS) |
6efd877d | 944 | long object_file_size; |
d5364748 | 945 | #endif |
6efd877d | 946 | |
43ca9aa6 KR |
947 | /* Do we really want to write it? */ |
948 | { | |
949 | int n_warns, n_errs; | |
950 | n_warns = had_warnings (); | |
951 | n_errs = had_errors (); | |
952 | /* The -Z flag indicates that an object file should be generated, | |
953 | regardless of warnings and errors. */ | |
954 | if (flagseen['Z']) | |
955 | { | |
956 | if (n_warns || n_errs) | |
957 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
958 | n_errs, n_errs == 1 ? "" : "s", | |
959 | n_warns, n_warns == 1 ? "" : "s"); | |
960 | } | |
961 | else | |
962 | { | |
963 | if (n_errs) | |
964 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
965 | n_errs, n_errs == 1 ? "" : "s", | |
966 | n_warns, n_warns == 1 ? "" : "s"); | |
967 | } | |
968 | } | |
969 | ||
3eb802b5 | 970 | #ifdef OBJ_VMS |
6efd877d | 971 | /* |
3eb802b5 ILT |
972 | * Under VMS we try to be compatible with VAX-11 "C". Thus, we |
973 | * call a routine to check for the definition of the procedure | |
974 | * "_main", and if so -- fix it up so that it can be program | |
975 | * entry point. | |
976 | */ | |
6efd877d | 977 | VMS_Check_For_Main (); |
fecd2382 | 978 | #endif /* VMS */ |
43ca9aa6 KR |
979 | |
980 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
981 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
982 | frag that requires least thought. ".align" frags like to have a | |
983 | following frag since that makes calculating their intended length | |
984 | trivial. | |
985 | ||
986 | @@ Is this really necessary?? */ | |
3eb802b5 | 987 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 988 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 989 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 990 | #else |
f2f7d044 | 991 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 992 | #endif |
3eb802b5 | 993 | #endif |
6efd877d KR |
994 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
995 | { | |
43ca9aa6 | 996 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 997 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
998 | /* frag_align will have left a new frag. |
999 | Use this last frag for an empty ".fill". | |
1000 | ||
1001 | For this segment ... | |
1002 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
1003 | frag_wane (frag_now); |
1004 | frag_now->fr_fix = 0; | |
1005 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 1006 | } |
6efd877d | 1007 | |
43ca9aa6 KR |
1008 | /* From now on, we don't care about sub-segments. Build one frag chain |
1009 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 1010 | |
43ca9aa6 KR |
1011 | #ifdef BFD_ASSEMBLER |
1012 | /* Remove the sections created by gas for its own purposes. */ | |
1013 | { | |
1014 | asection **seclist, *sec; | |
1015 | seclist = &stdoutput->sections; | |
1016 | while (seclist && *seclist) | |
1017 | { | |
1018 | sec = *seclist; | |
5ac34ac3 | 1019 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1020 | { |
1021 | sec = sec->next; | |
1022 | *seclist = sec; | |
1023 | stdoutput->section_count--; | |
1024 | if (!sec) | |
1025 | break; | |
1026 | } | |
1027 | if (*seclist) | |
1028 | seclist = &(*seclist)->next; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1033 | #else | |
6efd877d KR |
1034 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1035 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1036 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1037 | #endif |
6efd877d | 1038 | |
43ca9aa6 KR |
1039 | /* We have two segments. If user gave -R flag, then we must put the |
1040 | data frags into the text segment. Do this before relaxing so | |
1041 | we know to take advantage of -R and make shorter addresses. */ | |
1042 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
6efd877d KR |
1043 | if (flagseen['R']) |
1044 | { | |
b23f6743 | 1045 | merge_data_into_text (); |
6efd877d KR |
1046 | } |
1047 | #endif | |
43ca9aa6 KR |
1048 | |
1049 | #ifdef BFD_ASSEMBLER | |
1050 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1051 | #else | |
b23f6743 | 1052 | relax_and_size_all_segments (); |
43ca9aa6 | 1053 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1054 | |
43ca9aa6 | 1055 | #ifndef BFD_ASSEMBLER |
6efd877d | 1056 | /* |
7f2cb270 KR |
1057 | * |
1058 | * Crawl the symbol chain. | |
1059 | * | |
1060 | * For each symbol whose value depends on a frag, take the address of | |
1061 | * that frag and subsume it into the value of the symbol. | |
1062 | * After this, there is just one way to lookup a symbol value. | |
1063 | * Values are left in their final state for object file emission. | |
1064 | * We adjust the values of 'L' local symbols, even if we do | |
1065 | * not intend to emit them to the object file, because their values | |
1066 | * are needed for fix-ups. | |
1067 | * | |
1068 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1069 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1070 | * | |
1071 | * Count the remaining symbols. | |
1072 | * Assign a symbol number to each symbol. | |
1073 | * Count the number of string-table chars we will emit. | |
1074 | * Put this info into the headers as appropriate. | |
1075 | * | |
1076 | */ | |
6efd877d KR |
1077 | know (zero_address_frag.fr_address == 0); |
1078 | string_byte_count = sizeof (string_byte_count); | |
1079 | ||
1080 | obj_crawl_symbol_chain (&headers); | |
1081 | ||
1082 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1083 | string_byte_count = 0; |
6efd877d KR |
1084 | |
1085 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1086 | ||
1087 | /* | |
7f2cb270 KR |
1088 | * Addresses of frags now reflect addresses we use in the object file. |
1089 | * Symbol values are correct. | |
1090 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1091 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1092 | */ | |
6efd877d KR |
1093 | subseg_change (SEG_TEXT, 0); |
1094 | ||
1095 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1096 | { | |
43ca9aa6 | 1097 | cvt_frag_to_fill (&headers, fragP); |
6efd877d | 1098 | |
43ca9aa6 KR |
1099 | /* Some assert macros don't work with # directives mixed in. */ |
1100 | #ifndef NDEBUG | |
1101 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1102 | #ifdef OBJ_BOUT |
43ca9aa6 | 1103 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1104 | #endif |
6efd877d | 1105 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1106 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1107 | abort (); | |
1108 | #endif | |
1109 | } | |
1110 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1111 | |
fecd2382 | 1112 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1113 | { |
1114 | struct broken_word *lie; | |
1115 | struct broken_word **prevP; | |
1116 | ||
1117 | prevP = &broken_words; | |
1118 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1119 | if (!lie->added) | |
a39116f1 | 1120 | { |
5ac34ac3 ILT |
1121 | expressionS exp; |
1122 | ||
1123 | exp.X_op = O_subtract; | |
1124 | exp.X_add_symbol = lie->add; | |
1125 | exp.X_op_symbol = lie->sub; | |
1126 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1127 | #ifdef BFD_ASSEMBLER |
5ac34ac3 ILT |
1128 | fix_new_exp (lie->frag, |
1129 | lie->word_goes_here - lie->frag->fr_literal, | |
1130 | 2, &exp, 0, BFD_RELOC_NONE); | |
43ca9aa6 KR |
1131 | #else |
1132 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1133 | fix_new_exp (lie->frag, |
1134 | lie->word_goes_here - lie->frag->fr_literal, | |
1135 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1136 | #else |
fecd2382 | 1137 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1138 | fix_new_ns32k_exp (lie->frag, |
1139 | lie->word_goes_here - lie->frag->fr_literal, | |
1140 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1141 | #else |
5ac34ac3 ILT |
1142 | fix_new_exp (lie->frag, |
1143 | lie->word_goes_here - lie->frag->fr_literal, | |
1144 | 2, &exp, 0, 0); | |
fecd2382 | 1145 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1146 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1147 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1148 | *prevP = lie->next_broken_word; |
a39116f1 | 1149 | } |
6efd877d KR |
1150 | else |
1151 | prevP = &(lie->next_broken_word); | |
1152 | ||
1153 | for (lie = broken_words; lie;) | |
1154 | { | |
1155 | struct broken_word *untruth; | |
1156 | char *table_ptr; | |
d5364748 KR |
1157 | addressT table_addr; |
1158 | addressT from_addr, to_addr; | |
6efd877d KR |
1159 | int n, m; |
1160 | ||
6efd877d KR |
1161 | fragP = lie->dispfrag; |
1162 | ||
43ca9aa6 | 1163 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1164 | n = 0; |
1165 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1166 | if (untruth->added == 1) | |
1167 | n++; | |
1168 | ||
1169 | table_ptr = lie->dispfrag->fr_opcode; | |
1170 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1171 | /* Create the jump around the long jumps. This is a short |
1172 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1173 | from_addr = table_addr; |
1174 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1175 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1176 | table_ptr += md_short_jump_size; | |
1177 | table_addr += md_short_jump_size; | |
1178 | ||
1179 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1180 | { | |
1181 | if (lie->added == 2) | |
1182 | continue; | |
1183 | /* Patch the jump table */ | |
1184 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1185 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
6efd877d KR |
1186 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1187 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1188 | { | |
1189 | if (untruth->use_jump == lie) | |
1190 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1191 | } | |
1192 | ||
1193 | /* Install the long jump */ | |
1194 | /* this is a long jump from table_ptr+0 to the final target */ | |
1195 | from_addr = table_addr; | |
1196 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
1197 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1198 | table_ptr += md_long_jump_size; | |
1199 | table_addr += md_long_jump_size; | |
1200 | } | |
1201 | } | |
1202 | } | |
fecd2382 | 1203 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1204 | |
43ca9aa6 | 1205 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1206 | #ifndef OBJ_VMS |
6efd877d KR |
1207 | { /* not vms */ |
1208 | /* | |
3eb802b5 ILT |
1209 | * Scan every FixS performing fixups. We had to wait until now to do |
1210 | * this because md_convert_frag() may have made some fixSs. | |
1211 | */ | |
6efd877d KR |
1212 | int trsize, drsize; |
1213 | ||
1214 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1215 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1216 | subseg_change (SEG_DATA, 0); |
d5364748 | 1217 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1218 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1219 | ||
1220 | /* FIXME move this stuff into the pre-write-hook */ | |
1221 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1222 | H_SET_ENTRY_POINT (&headers, 0); | |
1223 | ||
1224 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1225 | |
1226 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1227 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1228 | ||
1229 | output_file_create (out_file_name); | |
1230 | ||
1231 | obj_header_append (&next_object_file_charP, &headers); | |
1232 | ||
1233 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1234 | ||
1235 | /* | |
43ca9aa6 KR |
1236 | * Emit code. |
1237 | */ | |
6efd877d KR |
1238 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1239 | { | |
1240 | register long count; | |
1241 | register char *fill_literal; | |
1242 | register long fill_size; | |
1243 | ||
1244 | know (fragP->fr_type == rs_fill); | |
1245 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1246 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1247 | fill_size = fragP->fr_var; | |
1248 | know (fragP->fr_offset >= 0); | |
1249 | ||
1250 | for (count = fragP->fr_offset; count; count--) | |
1251 | { | |
1252 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1253 | } /* for each */ | |
1254 | ||
1255 | } /* for each code frag. */ | |
1256 | ||
1257 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1258 | ||
1259 | /* | |
43ca9aa6 KR |
1260 | * Emit relocations. |
1261 | */ | |
6efd877d KR |
1262 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
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))); | |
fecd2382 | 1264 | #ifdef TC_I960 |
6efd877d | 1265 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1266 | * first data fragment, not end of last text fragment: alignment of the |
1267 | * start of the data segment may place a gap between the segments. | |
1268 | */ | |
6efd877d | 1269 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1270 | #else /* TC_I960 */ |
6efd877d | 1271 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1272 | #endif /* TC_I960 */ |
6efd877d KR |
1273 | |
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))); | |
1275 | ||
1276 | /* | |
43ca9aa6 KR |
1277 | * Emit line number entries. |
1278 | */ | |
6efd877d KR |
1279 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1280 | 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))); | |
1281 | ||
1282 | /* | |
3eb802b5 ILT |
1283 | * Emit symbols. |
1284 | */ | |
6efd877d KR |
1285 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1286 | 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))); | |
1287 | ||
1288 | /* | |
3eb802b5 ILT |
1289 | * Emit strings. |
1290 | */ | |
6efd877d KR |
1291 | |
1292 | if (string_byte_count > 0) | |
1293 | { | |
1294 | obj_emit_strings (&next_object_file_charP); | |
1295 | } /* only if we have a string table */ | |
1296 | ||
45432836 | 1297 | #ifdef BFD_HEADERS |
6efd877d KR |
1298 | bfd_seek (stdoutput, 0, 0); |
1299 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1300 | #else |
6efd877d KR |
1301 | |
1302 | /* Write the data to the file */ | |
1303 | output_file_append (the_object_file, object_file_size, out_file_name); | |
45432836 | 1304 | #endif |
6efd877d KR |
1305 | } /* non vms output */ |
1306 | #else /* VMS */ | |
1307 | /* | |
3eb802b5 ILT |
1308 | * Now do the VMS-dependent part of writing the object file |
1309 | */ | |
85825401 ILT |
1310 | VMS_write_object_file (H_GET_TEXT_SIZE (&headers), |
1311 | H_GET_DATA_SIZE (&headers), | |
1312 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1313 | text_frag_root, data_frag_root); |
6efd877d | 1314 | #endif /* VMS */ |
43ca9aa6 | 1315 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1316 | |
d5364748 KR |
1317 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1318 | ||
43ca9aa6 KR |
1319 | /* Set up symbol table, and write it out. */ |
1320 | if (symbol_rootP) | |
1321 | { | |
80aab579 ILT |
1322 | unsigned int i = 0; |
1323 | unsigned int n; | |
43ca9aa6 KR |
1324 | symbolS *symp; |
1325 | ||
1326 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1327 | { | |
262b22cd ILT |
1328 | int punt = 0; |
1329 | ||
5868b1fe ILT |
1330 | if (! symp->sy_resolved) |
1331 | { | |
5ac34ac3 | 1332 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1333 | { |
1334 | /* This is the normal case; skip the call. */ | |
1335 | S_SET_VALUE (symp, | |
1336 | (S_GET_VALUE (symp) | |
1337 | + symp->sy_frag->fr_address)); | |
1338 | symp->sy_resolved = 1; | |
1339 | } | |
1340 | else | |
1341 | resolve_symbol_value (symp); | |
1342 | } | |
1343 | ||
43ca9aa6 KR |
1344 | /* So far, common symbols have been treated like undefined symbols. |
1345 | Put them in the common section now. */ | |
1346 | if (S_IS_DEFINED (symp) == 0 | |
1347 | && S_GET_VALUE (symp) != 0) | |
1348 | S_SET_SEGMENT (symp, &bfd_com_section); | |
1349 | #if 0 | |
5868b1fe | 1350 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1351 | S_GET_NAME (symp), symp, |
1352 | S_GET_VALUE (symp), | |
d5364748 | 1353 | symp->bsym->flags, |
43ca9aa6 KR |
1354 | segment_name (symp->bsym->section)); |
1355 | #endif | |
335d35c8 | 1356 | |
80aab579 | 1357 | #ifdef obj_frob_symbol |
262b22cd | 1358 | obj_frob_symbol (symp, punt); |
43ca9aa6 KR |
1359 | #endif |
1360 | #ifdef tc_frob_symbol | |
262b22cd | 1361 | if (! punt || symp->sy_used_in_reloc) |
335d35c8 | 1362 | tc_frob_symbol (symp, punt); |
43ca9aa6 | 1363 | #endif |
80aab579 | 1364 | |
262b22cd ILT |
1365 | /* If we don't want to keep this symbol, splice it out of |
1366 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1367 | want section symbols. Otherwise, we skip local symbols | |
1368 | and symbols that the frob_symbol macros told us to punt, | |
1369 | but we keep such symbols if they are used in relocs. */ | |
1370 | if ((! EMIT_SECTION_SYMBOLS | |
1371 | && (symp->bsym->flags & BSF_SECTION_SYM) != 0) | |
1372 | || ((S_IS_LOCAL (symp) || punt) | |
1373 | && ! symp->sy_used_in_reloc)) | |
43ca9aa6 | 1374 | { |
262b22cd ILT |
1375 | symbolS *prev, *next; |
1376 | ||
1377 | prev = symbol_previous (symp); | |
1378 | next = symbol_next (symp); | |
b23f6743 | 1379 | #ifdef DEBUG_SYMS |
262b22cd | 1380 | verify_symbol_chain_2 (symp); |
43ca9aa6 | 1381 | #endif |
262b22cd ILT |
1382 | if (prev) |
1383 | { | |
1384 | symbol_next (prev) = next; | |
1385 | symp = prev; | |
1386 | } | |
1387 | else if (symp == symbol_rootP) | |
1388 | symbol_rootP = next; | |
1389 | else | |
1390 | abort (); | |
1391 | if (next) | |
1392 | symbol_previous (next) = prev; | |
1393 | else | |
1394 | symbol_lastP = prev; | |
b23f6743 | 1395 | #ifdef DEBUG_SYMS |
262b22cd ILT |
1396 | if (prev) |
1397 | verify_symbol_chain_2 (prev); | |
1398 | else if (next) | |
1399 | verify_symbol_chain_2 (next); | |
45432836 | 1400 | #endif |
262b22cd | 1401 | continue; |
43ca9aa6 | 1402 | } |
85051959 | 1403 | |
80aab579 ILT |
1404 | /* Make sure we really got a value for the symbol. */ |
1405 | if (! symp->sy_resolved) | |
1406 | { | |
1407 | as_bad ("can't resolve value for symbol \"%s\"", | |
1408 | S_GET_NAME (symp)); | |
1409 | symp->sy_resolved = 1; | |
1410 | } | |
1411 | ||
85051959 ILT |
1412 | /* Set the value into the BFD symbol. Up til now the value |
1413 | has only been kept in the gas symbolS struct. */ | |
1414 | symp->bsym->value = S_GET_VALUE (symp); | |
1415 | ||
43ca9aa6 KR |
1416 | i++; |
1417 | } | |
1418 | n = i; | |
1419 | if (n) | |
1420 | { | |
1421 | asymbol **asympp; | |
1422 | boolean result; | |
d5364748 | 1423 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); |
43ca9aa6 | 1424 | |
d5364748 KR |
1425 | asympp = (asymbol **) bfd_alloc (stdoutput, |
1426 | n * sizeof (asymbol *)); | |
43ca9aa6 KR |
1427 | symp = symbol_rootP; |
1428 | for (i = 0; i < n; i++, symp = symbol_next (symp)) | |
1429 | { | |
1430 | asympp[i] = symp->bsym; | |
1431 | symp->written = 1; | |
1432 | } | |
1433 | result = bfd_set_symtab (stdoutput, asympp, n); | |
1434 | assert (result == true); | |
1435 | } | |
1436 | } | |
1437 | ||
c79e67a3 KR |
1438 | #ifdef tc_frob_file |
1439 | tc_frob_file (); | |
1440 | #endif | |
1441 | ||
f2f7d044 | 1442 | #ifdef obj_frob_file |
85051959 ILT |
1443 | /* If obj_frob_file changes the symbol value at this point, it is |
1444 | responsible for moving the changed value into symp->bsym->value | |
1445 | as well. Hopefully all symbol value changing can be done in | |
1446 | {obj,tc}_frob_symbol. */ | |
f2f7d044 ILT |
1447 | obj_frob_file (); |
1448 | #endif | |
1449 | ||
43ca9aa6 KR |
1450 | /* Now that all the sizes are known, and contents correct, we can |
1451 | start writing the file. */ | |
8d6c34a1 KR |
1452 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1453 | ||
43ca9aa6 | 1454 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1455 | #endif /* BFD_ASSEMBLER */ |
1456 | } | |
d5364748 | 1457 | #endif /* ! BFD */ |
fecd2382 RP |
1458 | |
1459 | /* | |
1460 | * relax_segment() | |
1461 | * | |
1462 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1463 | * values. | |
1464 | * | |
1465 | * Relax the frags. | |
1466 | * | |
1467 | * After this, all frags in this segment have addresses that are correct | |
1468 | * within the segment. Since segments live in different file addresses, | |
1469 | * these frag addresses may not be the same as final object-file addresses. | |
1470 | */ | |
45432836 | 1471 | |
a58374d7 ILT |
1472 | #ifndef md_relax_frag |
1473 | ||
d5364748 | 1474 | /* Subroutines of relax_segment. */ |
43ca9aa6 KR |
1475 | static int |
1476 | is_dnrange (f1, f2) | |
1477 | struct frag *f1; | |
1478 | struct frag *f2; | |
1479 | { | |
1480 | for (; f1; f1 = f1->fr_next) | |
1481 | if (f1->fr_next == f2) | |
1482 | return 1; | |
1483 | return 0; | |
1484 | } | |
1485 | ||
a58374d7 ILT |
1486 | #endif /* ! defined (md_relax_frag) */ |
1487 | ||
43ca9aa6 | 1488 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1489 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1490 | static relax_addressT |
1491 | relax_align (address, alignment) | |
1492 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1493 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1494 | { |
1495 | relax_addressT mask; | |
1496 | relax_addressT new_address; | |
1497 | ||
1498 | mask = ~((~0) << alignment); | |
1499 | new_address = (address + mask) & (~mask); | |
1500 | if (linkrelax) | |
1501 | /* We must provide lots of padding, so the linker can discard it | |
1502 | when needed. The linker will not add extra space, ever. */ | |
1503 | new_address += (1 << alignment); | |
1504 | return (new_address - address); | |
1505 | } | |
45432836 | 1506 | |
6efd877d KR |
1507 | void |
1508 | relax_segment (segment_frag_root, segment) | |
1509 | struct frag *segment_frag_root; | |
43ca9aa6 | 1510 | segT segment; |
fecd2382 | 1511 | { |
6efd877d KR |
1512 | register struct frag *fragP; |
1513 | register relax_addressT address; | |
43ca9aa6 | 1514 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1515 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1516 | #endif |
6efd877d KR |
1517 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1518 | subseg_change (segment, 0); | |
1519 | ||
7f2cb270 KR |
1520 | /* For each frag in segment: count and store (a 1st guess of) |
1521 | fr_address. */ | |
6efd877d KR |
1522 | address = 0; |
1523 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1524 | { | |
1525 | fragP->fr_address = address; | |
1526 | address += fragP->fr_fix; | |
1527 | ||
1528 | switch (fragP->fr_type) | |
1529 | { | |
1530 | case rs_fill: | |
1531 | address += fragP->fr_offset * fragP->fr_var; | |
1532 | break; | |
1533 | ||
1534 | case rs_align: | |
98c6bbbe KR |
1535 | { |
1536 | int offset = relax_align (address, (int) fragP->fr_offset); | |
1537 | if (offset % fragP->fr_var != 0) | |
1538 | { | |
262b22cd ILT |
1539 | as_bad ("alignment padding (%d bytes) not a multiple of %ld", |
1540 | offset, (long) fragP->fr_var); | |
98c6bbbe KR |
1541 | offset -= (offset % fragP->fr_var); |
1542 | } | |
1543 | address += offset; | |
1544 | } | |
6efd877d KR |
1545 | break; |
1546 | ||
1547 | case rs_org: | |
7f2cb270 | 1548 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1549 | break; |
1550 | ||
1551 | case rs_machine_dependent: | |
1552 | address += md_estimate_size_before_relax (fragP, segment); | |
1553 | break; | |
1554 | ||
fecd2382 | 1555 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1556 | /* Broken words don't concern us yet */ |
1557 | case rs_broken_word: | |
1558 | break; | |
fecd2382 | 1559 | #endif |
6efd877d KR |
1560 | |
1561 | default: | |
1562 | BAD_CASE (fragP->fr_type); | |
1563 | break; | |
1564 | } /* switch(fr_type) */ | |
1565 | } /* for each frag in the segment */ | |
1566 | ||
7f2cb270 | 1567 | /* Do relax(). */ |
6efd877d | 1568 | { |
7f2cb270 | 1569 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1570 | /* Cumulative number of addresses we have */ |
1571 | /* relaxed this pass. */ | |
1572 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1573 | long stretched; /* Have we stretched on this pass? */ |
1574 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1575 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1576 | we could be scrod. */ | |
6efd877d KR |
1577 | |
1578 | do | |
1579 | { | |
1580 | stretch = stretched = 0; | |
1581 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1582 | { | |
7f2cb270 KR |
1583 | long growth = 0; |
1584 | unsigned long was_address; | |
1585 | long offset; | |
1586 | symbolS *symbolP; | |
1587 | long target; | |
1588 | long after; | |
6efd877d KR |
1589 | |
1590 | was_address = fragP->fr_address; | |
1591 | address = fragP->fr_address += stretch; | |
1592 | symbolP = fragP->fr_symbol; | |
1593 | offset = fragP->fr_offset; | |
6efd877d KR |
1594 | |
1595 | switch (fragP->fr_type) | |
1596 | { | |
1597 | case rs_fill: /* .fill never relaxes. */ | |
1598 | growth = 0; | |
1599 | break; | |
1600 | ||
fecd2382 | 1601 | #ifndef WORKING_DOT_WORD |
6efd877d | 1602 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1603 | for it I do not want to write it. I do not want to have |
1604 | anything to do with it. This is not the proper way to | |
1605 | implement this misfeature. */ | |
6efd877d KR |
1606 | case rs_broken_word: |
1607 | { | |
1608 | struct broken_word *lie; | |
1609 | struct broken_word *untruth; | |
6efd877d KR |
1610 | |
1611 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
1612 | in the symbol slot). Still, this whole chunk of |
1613 | code is ugly, and I don't feel like doing anything | |
1614 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
1615 | growth = 0; |
1616 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
1617 | lie && lie->dispfrag == fragP; | |
1618 | lie = lie->next_broken_word) | |
1619 | { | |
1620 | ||
1621 | if (lie->added) | |
1622 | continue; | |
1623 | ||
7f2cb270 KR |
1624 | offset = (lie->add->sy_frag->fr_address |
1625 | + S_GET_VALUE (lie->add) | |
1626 | + lie->addnum | |
1627 | - (lie->sub->sy_frag->fr_address | |
1628 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
1629 | if (offset <= -32768 || offset >= 32767) |
1630 | { | |
1631 | if (flagseen['K']) | |
d5364748 KR |
1632 | { |
1633 | char buf[50]; | |
80aab579 | 1634 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
1635 | as_warn (".word %s-%s+%s didn't fit", |
1636 | S_GET_NAME (lie->add), | |
1637 | S_GET_NAME (lie->sub), | |
1638 | buf); | |
1639 | } | |
6efd877d KR |
1640 | lie->added = 1; |
1641 | if (fragP->fr_subtype == 0) | |
1642 | { | |
1643 | fragP->fr_subtype++; | |
1644 | growth += md_short_jump_size; | |
1645 | } | |
7f2cb270 KR |
1646 | for (untruth = lie->next_broken_word; |
1647 | untruth && untruth->dispfrag == lie->dispfrag; | |
1648 | untruth = untruth->next_broken_word) | |
6efd877d KR |
1649 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
1650 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
1651 | { | |
1652 | untruth->added = 2; | |
1653 | untruth->use_jump = lie; | |
1654 | } | |
1655 | growth += md_long_jump_size; | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | break; | |
1660 | } /* case rs_broken_word */ | |
fecd2382 | 1661 | #endif |
6efd877d | 1662 | case rs_align: |
43ca9aa6 KR |
1663 | growth = (relax_align ((relax_addressT) (address |
1664 | + fragP->fr_fix), | |
d5364748 | 1665 | (int) offset) |
43ca9aa6 KR |
1666 | - relax_align ((relax_addressT) (was_address |
1667 | + fragP->fr_fix), | |
d5364748 | 1668 | (int) offset)); |
6efd877d KR |
1669 | break; |
1670 | ||
1671 | case rs_org: | |
1672 | target = offset; | |
1673 | ||
1674 | if (symbolP) | |
1675 | { | |
43ca9aa6 KR |
1676 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1677 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1678 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1679 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
1680 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 1681 | know (symbolP->sy_frag); |
43ca9aa6 KR |
1682 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
1683 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 1684 | #endif |
6efd877d KR |
1685 | target += S_GET_VALUE (symbolP) |
1686 | + symbolP->sy_frag->fr_address; | |
1687 | } /* if we have a symbol */ | |
1688 | ||
1689 | know (fragP->fr_next); | |
1690 | after = fragP->fr_next->fr_address; | |
1691 | growth = ((target - after) > 0) ? (target - after) : 0; | |
43ca9aa6 KR |
1692 | /* Growth may be negative, but variable part of frag |
1693 | cannot have fewer than 0 chars. That is, we can't | |
1694 | .org backwards. */ | |
6efd877d KR |
1695 | |
1696 | growth -= stretch; /* This is an absolute growth factor */ | |
1697 | break; | |
1698 | ||
1699 | case rs_machine_dependent: | |
a58374d7 ILT |
1700 | #ifdef md_relax_frag |
1701 | growth = md_relax_frag (fragP, stretch); | |
1702 | #else | |
1703 | /* The default way to relax a frag is to look through | |
1704 | md_relax_table. */ | |
6efd877d | 1705 | { |
7f2cb270 KR |
1706 | const relax_typeS *this_type; |
1707 | const relax_typeS *start_type; | |
1708 | relax_substateT next_state; | |
1709 | relax_substateT this_state; | |
80aab579 | 1710 | long aim; |
6efd877d | 1711 | |
7f2cb270 KR |
1712 | this_state = fragP->fr_subtype; |
1713 | start_type = this_type = md_relax_table + this_state; | |
6efd877d KR |
1714 | target = offset; |
1715 | ||
1716 | if (symbolP) | |
1717 | { | |
80aab579 | 1718 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
1719 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1720 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1721 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1722 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
1723 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 1724 | #endif |
6efd877d | 1725 | know (symbolP->sy_frag); |
80aab579 | 1726 | #endif |
43ca9aa6 KR |
1727 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
1728 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
1729 | target += |
1730 | S_GET_VALUE (symbolP) | |
1731 | + symbolP->sy_frag->fr_address; | |
1732 | ||
1733 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
1734 | assume it will move by STRETCH just as we did. |
1735 | If this is not so, it will be because some frag | |
d5364748 KR |
1736 | between grows, and that will force another pass. |
1737 | ||
1738 | Beware zero-length frags. | |
1739 | ||
1740 | There should be a faster way to do this. */ | |
6efd877d KR |
1741 | |
1742 | if (symbolP->sy_frag->fr_address >= was_address | |
1743 | && is_dnrange (fragP, symbolP->sy_frag)) | |
1744 | { | |
1745 | target += stretch; | |
7f2cb270 | 1746 | } |
d5364748 | 1747 | } |
6efd877d KR |
1748 | |
1749 | aim = target - address - fragP->fr_fix; | |
1750 | /* The displacement is affected by the instruction size | |
7f2cb270 KR |
1751 | for the 32k architecture. I think we ought to be able |
1752 | to add fragP->fr_pcrel_adjust in all cases (it should be | |
1753 | zero if not used), but just in case it breaks something | |
1754 | else we'll put this inside #ifdef NS32K ... #endif */ | |
d5364748 KR |
1755 | #ifndef TC_NS32K |
1756 | if (fragP->fr_pcrel_adjust) | |
1757 | abort (); | |
1758 | #endif | |
6efd877d | 1759 | aim += fragP->fr_pcrel_adjust; |
6efd877d KR |
1760 | |
1761 | if (aim < 0) | |
1762 | { | |
1763 | /* Look backwards. */ | |
1764 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1765 | if (aim >= this_type->rlx_backward) |
1766 | next_state = 0; | |
1767 | else | |
1768 | { | |
1769 | /* Grow to next state. */ | |
1770 | this_state = next_state; | |
1771 | this_type = md_relax_table + this_state; | |
1772 | next_state = this_type->rlx_more; | |
1773 | } | |
6efd877d KR |
1774 | } |
1775 | else | |
1776 | { | |
a39116f1 | 1777 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 1778 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 1779 | #endif |
6efd877d KR |
1780 | /* Look forwards. */ |
1781 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
1782 | if (aim <= this_type->rlx_forward) |
1783 | next_state = 0; | |
1784 | else | |
1785 | { | |
1786 | /* Grow to next state. */ | |
1787 | this_state = next_state; | |
1788 | this_type = md_relax_table + this_state; | |
1789 | next_state = this_type->rlx_more; | |
1790 | } | |
6efd877d KR |
1791 | } |
1792 | ||
7f2cb270 KR |
1793 | growth = this_type->rlx_length - start_type->rlx_length; |
1794 | if (growth != 0) | |
6efd877d | 1795 | fragP->fr_subtype = this_state; |
7f2cb270 | 1796 | } |
a58374d7 | 1797 | #endif |
7f2cb270 | 1798 | break; |
6efd877d KR |
1799 | |
1800 | default: | |
1801 | BAD_CASE (fragP->fr_type); | |
1802 | break; | |
1803 | } | |
1804 | if (growth) | |
1805 | { | |
1806 | stretch += growth; | |
1807 | stretched++; | |
1808 | } | |
1809 | } /* For each frag in the segment. */ | |
1810 | } | |
1811 | while (stretched); /* Until nothing further to relax. */ | |
1812 | } /* do_relax */ | |
1813 | ||
1814 | /* | |
7f2cb270 KR |
1815 | * We now have valid fr_address'es for each frag. |
1816 | */ | |
6efd877d KR |
1817 | |
1818 | /* | |
7f2cb270 KR |
1819 | * All fr_address's are correct, relative to their own segment. |
1820 | * We have made all the fixS we will ever make. | |
1821 | */ | |
6efd877d | 1822 | } /* relax_segment() */ |
fecd2382 | 1823 | |
80aab579 ILT |
1824 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1825 | ||
fecd2382 | 1826 | /* fixup_segment() |
6efd877d | 1827 | |
fecd2382 RP |
1828 | Go through all the fixS's in a segment and see which ones can be |
1829 | handled now. (These consist of fixS where we have since discovered | |
1830 | the value of a symbol, or the address of the frag involved.) | |
1831 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 1832 | |
fecd2382 RP |
1833 | Result is a count of how many relocation structs will be needed to |
1834 | handle the remaining fixS's that we couldn't completely handle here. | |
1835 | These will be output later by emit_relocations(). */ | |
1836 | ||
09952cd9 | 1837 | static long |
6efd877d | 1838 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 1839 | register fixS *fixP; |
6efd877d | 1840 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 1841 | { |
f5c32424 KR |
1842 | long seg_reloc_count = 0; |
1843 | symbolS *add_symbolP; | |
1844 | symbolS *sub_symbolP; | |
d5364748 | 1845 | valueT add_number; |
f5c32424 KR |
1846 | int size; |
1847 | char *place; | |
1848 | long where; | |
1849 | char pcrel; | |
1850 | fragS *fragP; | |
1851 | segT add_symbol_segment = absolute_section; | |
1852 | ||
1853 | /* If the linker is doing the relaxing, we must not do any fixups. | |
1854 | ||
1855 | Well, strictly speaking that's not true -- we could do any that are | |
1856 | PC-relative and don't cross regions that could change size. And for the | |
1857 | i960 (the only machine for which we've got a relaxing linker right now), | |
1858 | we might be able to turn callx/callj into bal anyways in cases where we | |
1859 | know the maximum displacement. */ | |
6efd877d | 1860 | if (linkrelax) |
f5c32424 KR |
1861 | { |
1862 | for (; fixP; fixP = fixP->fx_next) | |
1863 | seg_reloc_count++; | |
1864 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
1865 | return seg_reloc_count; | |
1866 | } | |
6efd877d | 1867 | |
f5c32424 KR |
1868 | for (; fixP; fixP = fixP->fx_next) |
1869 | { | |
1870 | fragP = fixP->fx_frag; | |
1871 | know (fragP); | |
1872 | where = fixP->fx_where; | |
1873 | place = fragP->fr_literal + where; | |
1874 | size = fixP->fx_size; | |
1875 | add_symbolP = fixP->fx_addsy; | |
1876 | #ifdef TC_VALIDATE_FIX | |
1877 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 1878 | #endif |
f5c32424 KR |
1879 | sub_symbolP = fixP->fx_subsy; |
1880 | add_number = fixP->fx_offset; | |
1881 | pcrel = fixP->fx_pcrel; | |
1882 | ||
1883 | if (add_symbolP) | |
1884 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
1885 | ||
1886 | if (sub_symbolP) | |
1887 | { | |
1888 | if (!add_symbolP) | |
1889 | { | |
1890 | /* Its just -sym */ | |
1891 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) | |
6efd877d | 1892 | add_number -= S_GET_VALUE (sub_symbolP); |
f5c32424 KR |
1893 | else if (pcrel |
1894 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
1895 | { | |
1896 | /* Should try converting to a constant. */ | |
1897 | goto bad_sub_reloc; | |
1898 | } | |
1899 | else | |
1900 | bad_sub_reloc: | |
1901 | as_bad ("Negative of non-absolute symbol %s", | |
1902 | S_GET_NAME (sub_symbolP)); | |
1903 | } | |
1904 | else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment) | |
1905 | && (SEG_NORMAL (add_symbol_segment) | |
1906 | || (add_symbol_segment == absolute_section))) | |
1907 | { | |
1908 | /* Difference of 2 symbols from same segment. | |
1909 | Can't make difference of 2 undefineds: 'value' means | |
1910 | something different for N_UNDF. */ | |
fecd2382 | 1911 | #ifdef TC_I960 |
f5c32424 KR |
1912 | /* Makes no sense to use the difference of 2 arbitrary symbols |
1913 | as the target of a call instruction. */ | |
1914 | if (fixP->fx_tcbit) | |
1915 | as_bad ("callj to difference of 2 symbols"); | |
6efd877d | 1916 | #endif /* TC_I960 */ |
f5c32424 KR |
1917 | add_number += S_GET_VALUE (add_symbolP) - |
1918 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 1919 | |
f5c32424 | 1920 | add_symbolP = NULL; |
335d35c8 | 1921 | |
f5c32424 KR |
1922 | /* Let the target machine make the final determination |
1923 | as to whether or not a relocation will be needed to | |
1924 | handle this fixup. */ | |
1925 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
1926 | { |
1927 | fixP->fx_addsy = NULL; | |
1928 | } | |
f5c32424 KR |
1929 | } |
1930 | else | |
1931 | { | |
1932 | /* Different segments in subtraction. */ | |
1933 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
1934 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
1935 | ||
1936 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
1937 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 1938 | |
80aab579 | 1939 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
1940 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
1941 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
1942 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
1943 | pc-relative mode. */ | |
1944 | && pcrel | |
0f894895 | 1945 | #endif |
f5c32424 KR |
1946 | ) |
1947 | { | |
1948 | /* Make it pc-relative. */ | |
1949 | add_number += (md_pcrel_from (fixP) | |
1950 | - S_GET_VALUE (sub_symbolP)); | |
1951 | pcrel = 1; | |
1952 | fixP->fx_pcrel = 1; | |
1953 | sub_symbolP = 0; | |
1954 | fixP->fx_subsy = 0; | |
1955 | } | |
98c6bbbe KR |
1956 | #endif |
1957 | #ifdef BFD_ASSEMBLER | |
1958 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
1959 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
1960 | { | |
1961 | /* Leave it alone. */ | |
1962 | } | |
80aab579 | 1963 | #endif |
f5c32424 KR |
1964 | else |
1965 | { | |
1966 | char buf[50]; | |
1967 | sprint_value (buf, fragP->fr_address + where); | |
1968 | as_bad ("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
1969 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
1970 | S_GET_NAME (sub_symbolP), buf); | |
1971 | } | |
1972 | } | |
1973 | } | |
6efd877d | 1974 | |
f5c32424 KR |
1975 | if (add_symbolP) |
1976 | { | |
1977 | if (add_symbol_segment == this_segment_type && pcrel) | |
1978 | { | |
1979 | /* | |
1980 | * This fixup was made when the symbol's segment was | |
1981 | * SEG_UNKNOWN, but it is now in the local segment. | |
1982 | * So we know how to do the address without relocation. | |
1983 | */ | |
fecd2382 | 1984 | #ifdef TC_I960 |
f5c32424 KR |
1985 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
1986 | 'bal', in which cases it modifies *fixP as appropriate. | |
1987 | In the case of a 'calls', no further work is required, | |
1988 | and *fixP has been set up to make the rest of the code | |
1989 | below a no-op. */ | |
1990 | reloc_callj (fixP); | |
fecd2382 | 1991 | #endif /* TC_I960 */ |
6efd877d | 1992 | |
f5c32424 KR |
1993 | add_number += S_GET_VALUE (add_symbolP); |
1994 | add_number -= md_pcrel_from (fixP); | |
1995 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
1996 | ||
1997 | /* Let the target machine make the final determination | |
1998 | as to whether or not a relocation will be needed to | |
1999 | handle this fixup. */ | |
2000 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
2001 | { |
2002 | fixP->fx_pcrel = 0; | |
2003 | fixP->fx_addsy = NULL; | |
2004 | } | |
f5c32424 KR |
2005 | } |
2006 | else | |
2007 | { | |
2008 | if (add_symbol_segment == absolute_section) | |
2009 | { | |
fecd2382 | 2010 | #ifdef TC_I960 |
f5c32424 KR |
2011 | /* See comment about reloc_callj() above. */ |
2012 | reloc_callj (fixP); | |
fecd2382 | 2013 | #endif /* TC_I960 */ |
f5c32424 KR |
2014 | add_number += S_GET_VALUE (add_symbolP); |
2015 | ||
2016 | /* Let the target machine make the final determination | |
2017 | as to whether or not a relocation will be needed to | |
2018 | handle this fixup. */ | |
2019 | if (!TC_FORCE_RELOCATION (fixP)) | |
e67a0640 KR |
2020 | { |
2021 | fixP->fx_addsy = NULL; | |
2022 | add_symbolP = NULL; | |
2023 | } | |
f5c32424 KR |
2024 | } |
2025 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 2026 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2027 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 2028 | #endif |
f5c32424 KR |
2029 | ) |
2030 | { | |
fecd2382 | 2031 | #ifdef TC_I960 |
f5c32424 KR |
2032 | if ((int) fixP->fx_bit_fixP == 13) |
2033 | { | |
2034 | /* This is a COBR instruction. They have only a | |
2035 | * 13-bit displacement and are only to be used | |
2036 | * for local branches: flag as error, don't generate | |
2037 | * relocation. | |
2038 | */ | |
2039 | as_bad ("can't use COBR format with external label"); | |
98c6bbbe KR |
2040 | fixP->fx_addsy = NULL; |
2041 | fixP->fx_done = 1; | |
f5c32424 KR |
2042 | continue; |
2043 | } /* COBR */ | |
fecd2382 | 2044 | #endif /* TC_I960 */ |
f5c32424 | 2045 | |
fecd2382 | 2046 | #ifdef OBJ_COFF |
c593cf41 | 2047 | #ifdef TE_I386AIX |
f5c32424 KR |
2048 | if (S_IS_COMMON (add_symbolP)) |
2049 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2050 | #endif /* TE_I386AIX */ |
fecd2382 | 2051 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2052 | ++seg_reloc_count; |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | seg_reloc_count++; | |
2057 | add_number += S_GET_VALUE (add_symbolP); | |
2058 | } | |
2059 | } | |
2060 | } | |
6efd877d | 2061 | |
f5c32424 KR |
2062 | if (pcrel) |
2063 | { | |
2064 | add_number -= md_pcrel_from (fixP); | |
2065 | if (add_symbolP == 0) | |
2066 | { | |
2067 | fixP->fx_addsy = &abs_symbol; | |
2068 | ++seg_reloc_count; | |
98c6bbbe KR |
2069 | } |
2070 | } | |
6efd877d | 2071 | |
f5c32424 KR |
2072 | if (!fixP->fx_bit_fixP && size > 0) |
2073 | { | |
2074 | valueT mask = 0; | |
2075 | /* set all bits to one */ | |
2076 | mask--; | |
98c6bbbe KR |
2077 | /* Technically, combining these produces an undefined result |
2078 | if size is sizeof (valueT), though I think these two | |
2079 | half-way operations should both be defined. And the | |
2080 | compiler should be able to combine them if it's valid on | |
2081 | the host architecture. */ | |
f5c32424 KR |
2082 | mask <<= size * 4; |
2083 | mask <<= size * 4; | |
2084 | if ((add_number & mask) != 0 | |
2085 | && (add_number & mask) != mask) | |
2086 | { | |
2087 | char buf[50], buf2[50]; | |
2088 | sprint_value (buf, fragP->fr_address + where); | |
2089 | if (add_number > 1000) | |
2090 | sprint_value (buf2, add_number); | |
2091 | else | |
2092 | sprintf (buf2, "%ld", (long) add_number); | |
84fa9814 | 2093 | as_bad_where (fixP->fx_file, fixP->fx_line, |
f5c32424 KR |
2094 | "Value of %s too large for field of %d bytes at %s", |
2095 | buf2, size, buf); | |
2096 | } /* generic error checking */ | |
2097 | #ifdef WARN_SIGNED_OVERFLOW_WORD | |
2098 | /* Warn if a .word value is too large when treated as a signed | |
2099 | number. We already know it is not too negative. This is to | |
2100 | catch over-large switches generated by gcc on the 68k. */ | |
2101 | if (!flagseen['J'] | |
2102 | && size == 2 | |
2103 | && add_number > 0x7fff) | |
2104 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2105 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2106 | (long) add_number, | |
2107 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2108 | #endif |
f5c32424 | 2109 | } /* not a bit fix */ |
6efd877d | 2110 | |
98c6bbbe KR |
2111 | if (!fixP->fx_done) |
2112 | { | |
43ca9aa6 | 2113 | #ifdef BFD_ASSEMBLER |
98c6bbbe | 2114 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2115 | #else |
98c6bbbe KR |
2116 | md_apply_fix (fixP, add_number); |
2117 | #endif | |
2118 | ||
2119 | #ifndef TC_HANDLES_FX_DONE | |
2120 | /* If the tc-* files haven't been converted, assume it's handling | |
2121 | it the old way, where a null fx_addsy means that the fix has | |
2122 | been applied completely, and no further work is needed. */ | |
2123 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2124 | fixP->fx_done = 1; | |
43ca9aa6 | 2125 | #endif |
98c6bbbe KR |
2126 | } |
2127 | #ifdef TC_VALIDATE_FIX | |
f5c32424 | 2128 | skip: |
98c6bbbe | 2129 | #endif |
f5c32424 KR |
2130 | ; |
2131 | } /* For each fixS in this segment. */ | |
6efd877d | 2132 | |
f5c32424 KR |
2133 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2134 | return seg_reloc_count; | |
2135 | } | |
6efd877d | 2136 | |
f5c32424 | 2137 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
6efd877d | 2138 | |
f5c32424 KR |
2139 | void |
2140 | number_to_chars_bigendian (buf, val, n) | |
2141 | char *buf; | |
2142 | valueT val; | |
2143 | int n; | |
2144 | { | |
2145 | if (n > sizeof (val)|| n <= 0) | |
2146 | abort (); | |
2147 | while (n--) | |
2148 | { | |
2149 | buf[n] = val & 0xff; | |
2150 | val >>= 8; | |
2151 | } | |
d5364748 | 2152 | } |
fecd2382 | 2153 | |
f5c32424 KR |
2154 | void |
2155 | number_to_chars_littleendian (buf, val, n) | |
2156 | char *buf; | |
2157 | valueT val; | |
2158 | int n; | |
2159 | { | |
2160 | if (n > sizeof (val) || n <= 0) | |
2161 | abort (); | |
2162 | while (n--) | |
2163 | { | |
2164 | *buf++ = val & 0xff; | |
2165 | val >>= 8; | |
2166 | } | |
2167 | } | |
80aab579 | 2168 | |
fecd2382 | 2169 | /* end of write.c */ |