Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* write.c - emit .o file |
a043f579 | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 1996 |
5767cfb7 | 3 | Free Software Foundation, Inc. |
6efd877d | 4 | |
a39116f1 | 5 | This file is part of GAS, the GNU Assembler. |
6efd877d | 6 | |
a39116f1 RP |
7 | GAS is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
6efd877d | 11 | |
a39116f1 RP |
12 | GAS is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
6efd877d | 16 | |
a39116f1 RP |
17 | You should have received a copy of the GNU General Public License |
18 | along with GAS; see the file COPYING. If not, write to | |
a2a5a4fa | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
fecd2382 | 20 | |
c593cf41 | 21 | /* This thing should be set up to do byteordering correctly. But... */ |
fecd2382 RP |
22 | |
23 | #include "as.h" | |
fecd2382 RP |
24 | #include "subsegs.h" |
25 | #include "obstack.h" | |
26 | #include "output-file.h" | |
27 | ||
d9d6f094 KR |
28 | /* This looks like a good idea. Let's try turning it on always, for now. */ |
29 | #undef BFD_FAST_SECTION_FILL | |
30 | #define BFD_FAST_SECTION_FILL | |
31 | ||
43ca9aa6 KR |
32 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop |
33 | instruction so that the disassembler does not choke on it. */ | |
6d5460ab RP |
34 | #ifndef NOP_OPCODE |
35 | #define NOP_OPCODE 0x00 | |
36 | #endif | |
37 | ||
f5c32424 KR |
38 | #ifndef TC_ADJUST_RELOC_COUNT |
39 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
40 | #endif | |
41 | ||
335d35c8 JL |
42 | #ifndef TC_FORCE_RELOCATION |
43 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
44 | #endif | |
45 | ||
96fe71e1 MM |
46 | #ifndef TC_FORCE_RELOCATION_SECTION |
47 | #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) | |
48 | #endif | |
49 | ||
50 | #ifndef MD_PCREL_FROM_SECTION | |
51 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) | |
52 | #endif | |
53 | ||
43ca9aa6 KR |
54 | #ifndef WORKING_DOT_WORD |
55 | extern CONST int md_short_jump_size; | |
56 | extern CONST int md_long_jump_size; | |
57 | #endif | |
58 | ||
1cf7548e | 59 | int symbol_table_frozen; |
a55774a1 | 60 | void print_fixup PARAMS ((fixS *)); |
1cf7548e | 61 | |
1b96bdce | 62 | #ifdef BFD_ASSEMBLER |
a55774a1 KR |
63 | static void renumber_sections PARAMS ((bfd *, asection *, PTR)); |
64 | ||
1b96bdce ILT |
65 | /* We generally attach relocs to frag chains. However, after we have |
66 | chained these all together into a segment, any relocs we add after | |
67 | that must be attached to a segment. This will include relocs added | |
68 | in md_estimate_size_for_relax, for example. */ | |
69 | static int frags_chained = 0; | |
70 | #endif | |
71 | ||
43ca9aa6 KR |
72 | #ifndef BFD_ASSEMBLER |
73 | ||
45432836 | 74 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
75 | struct frag *text_frag_root; |
76 | struct frag *data_frag_root; | |
77 | struct frag *bss_frag_root; | |
fecd2382 | 78 | |
09952cd9 KR |
79 | struct frag *text_last_frag; /* Last frag in segment. */ |
80 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 81 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 82 | #endif |
fecd2382 | 83 | |
1cf7548e | 84 | #ifndef BFD |
fecd2382 | 85 | static object_headers headers; |
80aab579 ILT |
86 | #endif |
87 | ||
88 | long string_byte_count; | |
fecd2382 RP |
89 | char *next_object_file_charP; /* Tracks object file bytes. */ |
90 | ||
3eb802b5 | 91 | #ifndef OBJ_VMS |
fecd2382 | 92 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 93 | #endif |
fecd2382 | 94 | |
43ca9aa6 KR |
95 | #endif /* BFD_ASSEMBLER */ |
96 | ||
a043f579 ILT |
97 | static int n_fixups; |
98 | ||
7a0405b9 | 99 | #ifdef BFD_ASSEMBLER |
b23f6743 | 100 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
101 | symbolS *add, symbolS *sub, |
102 | offsetT offset, int pcrel, | |
7a0405b9 | 103 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 104 | #else |
b23f6743 | 105 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
106 | symbolS *add, symbolS *sub, |
107 | offsetT offset, int pcrel, | |
108 | int r_type)); | |
5ac34ac3 | 109 | #endif |
3f81f3cf | 110 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
6efd877d | 111 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 112 | #endif |
d5364748 | 113 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
114 | |
115 | /* | |
116 | * fix_new() | |
117 | * | |
118 | * Create a fixS in obstack 'notes'. | |
119 | */ | |
5ac34ac3 ILT |
120 | static fixS * |
121 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
122 | r_type) | |
6efd877d KR |
123 | fragS *frag; /* Which frag? */ |
124 | int where; /* Where in that frag? */ | |
b23f6743 | 125 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 126 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 127 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 128 | offsetT offset; /* X_add_number. */ |
6efd877d | 129 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
130 | #ifdef BFD_ASSEMBLER |
131 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
132 | #else | |
6efd877d | 133 | int r_type; /* Relocation type */ |
43ca9aa6 | 134 | #endif |
fecd2382 | 135 | { |
6efd877d KR |
136 | fixS *fixP; |
137 | ||
a043f579 ILT |
138 | n_fixups++; |
139 | ||
6efd877d KR |
140 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); |
141 | ||
142 | fixP->fx_frag = frag; | |
143 | fixP->fx_where = where; | |
144 | fixP->fx_size = size; | |
f00f5ecd ILT |
145 | /* We've made fx_size a narrow field; check that it's wide enough. */ |
146 | if (fixP->fx_size != size) | |
147 | { | |
148 | as_bad ("field fx_size too small to hold %d", size); | |
149 | abort (); | |
150 | } | |
6efd877d KR |
151 | fixP->fx_addsy = add_symbol; |
152 | fixP->fx_subsy = sub_symbol; | |
153 | fixP->fx_offset = offset; | |
154 | fixP->fx_pcrel = pcrel; | |
a55774a1 | 155 | fixP->fx_plt = 0; |
43ca9aa6 | 156 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 157 | fixP->fx_r_type = r_type; |
c593cf41 | 158 | #endif |
6efd877d KR |
159 | fixP->fx_im_disp = 0; |
160 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 161 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 162 | fixP->fx_addnumber = 0; |
a58374d7 | 163 | fixP->fx_tcbit = 0; |
98c6bbbe | 164 | fixP->fx_done = 0; |
43ca9aa6 | 165 | |
f00f5ecd ILT |
166 | #ifdef TC_FIX_TYPE |
167 | TC_INIT_FIX_DATA(fixP); | |
43ca9aa6 | 168 | #endif |
43ca9aa6 | 169 | |
84fa9814 KR |
170 | as_where (&fixP->fx_file, &fixP->fx_line); |
171 | ||
43ca9aa6 KR |
172 | /* Usually, we want relocs sorted numerically, but while |
173 | comparing to older versions of gas that have relocs | |
174 | reverse sorted, it is convenient to have this compile | |
175 | time option. xoxorich. */ | |
176 | ||
177 | { | |
6efd877d | 178 | |
43ca9aa6 | 179 | #ifdef BFD_ASSEMBLER |
1b96bdce ILT |
180 | fixS **seg_fix_rootP = (frags_chained |
181 | ? &seg_info (now_seg)->fix_root | |
182 | : &frchain_now->fix_root); | |
183 | fixS **seg_fix_tailP = (frags_chained | |
184 | ? &seg_info (now_seg)->fix_tail | |
185 | : &frchain_now->fix_tail); | |
43ca9aa6 | 186 | #endif |
09952cd9 | 187 | |
f6e504fe | 188 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 189 | |
43ca9aa6 KR |
190 | fixP->fx_next = *seg_fix_rootP; |
191 | *seg_fix_rootP = fixP; | |
6efd877d | 192 | |
f6e504fe | 193 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 194 | |
43ca9aa6 | 195 | fixP->fx_next = NULL; |
6efd877d | 196 | |
43ca9aa6 KR |
197 | if (*seg_fix_tailP) |
198 | (*seg_fix_tailP)->fx_next = fixP; | |
199 | else | |
200 | *seg_fix_rootP = fixP; | |
201 | *seg_fix_tailP = fixP; | |
6efd877d | 202 | |
f6e504fe | 203 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 204 | |
43ca9aa6 KR |
205 | } |
206 | ||
207 | return fixP; | |
208 | } | |
209 | ||
5ac34ac3 ILT |
210 | /* Create a fixup relative to a symbol (plus a constant). */ |
211 | ||
212 | fixS * | |
213 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
214 | fragS *frag; /* Which frag? */ | |
215 | int where; /* Where in that frag? */ | |
f7da4a99 | 216 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
217 | symbolS *add_symbol; /* X_add_symbol. */ |
218 | offsetT offset; /* X_add_number. */ | |
219 | int pcrel; /* TRUE if PC-relative relocation. */ | |
220 | #ifdef BFD_ASSEMBLER | |
221 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
222 | #else | |
223 | int r_type; /* Relocation type */ | |
224 | #endif | |
225 | { | |
226 | return fix_new_internal (frag, where, size, add_symbol, | |
227 | (symbolS *) NULL, offset, pcrel, r_type); | |
228 | } | |
229 | ||
230 | /* Create a fixup for an expression. Currently we only support fixups | |
231 | for difference expressions. That is itself more than most object | |
232 | file formats support anyhow. */ | |
233 | ||
234 | fixS * | |
235 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
236 | fragS *frag; /* Which frag? */ | |
237 | int where; /* Where in that frag? */ | |
f7da4a99 | 238 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
239 | expressionS *exp; /* Expression. */ |
240 | int pcrel; /* TRUE if PC-relative relocation. */ | |
241 | #ifdef BFD_ASSEMBLER | |
242 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
243 | #else | |
244 | int r_type; /* Relocation type */ | |
245 | #endif | |
246 | { | |
247 | symbolS *add = NULL; | |
248 | symbolS *sub = NULL; | |
249 | offsetT off = 0; | |
96fe71e1 | 250 | |
5ac34ac3 ILT |
251 | switch (exp->X_op) |
252 | { | |
253 | case O_absent: | |
254 | break; | |
255 | ||
4acf8c78 KR |
256 | case O_add: |
257 | /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if | |
258 | the difference expression cannot immediately be reduced. */ | |
259 | { | |
260 | extern symbolS *make_expr_symbol (); | |
261 | symbolS *stmp = make_expr_symbol (exp); | |
262 | exp->X_op = O_symbol; | |
263 | exp->X_op_symbol = 0; | |
264 | exp->X_add_symbol = stmp; | |
265 | exp->X_add_number = 0; | |
266 | return fix_new_exp (frag, where, size, exp, pcrel, r_type); | |
267 | } | |
268 | ||
96fe71e1 MM |
269 | case O_symbol_rva: |
270 | add = exp->X_add_symbol; | |
271 | off = exp->X_add_number; | |
272 | ||
273 | #if defined(BFD_ASSEMBLER) | |
274 | r_type = BFD_RELOC_RVA; | |
8095b665 ILT |
275 | #else |
276 | #if defined(TC_RVA_RELOC) | |
96fe71e1 MM |
277 | r_type = TC_RVA_RELOC; |
278 | #else | |
279 | as_fatal("rva not supported"); | |
8095b665 | 280 | #endif |
96fe71e1 MM |
281 | #endif |
282 | break; | |
283 | ||
b23f6743 KR |
284 | case O_uminus: |
285 | sub = exp->X_add_symbol; | |
286 | off = exp->X_add_number; | |
287 | break; | |
288 | ||
5ac34ac3 ILT |
289 | case O_subtract: |
290 | sub = exp->X_op_symbol; | |
291 | /* Fall through. */ | |
292 | case O_symbol: | |
293 | add = exp->X_add_symbol; | |
294 | /* Fall through. */ | |
295 | case O_constant: | |
296 | off = exp->X_add_number; | |
297 | break; | |
5d0cd0b8 | 298 | |
5ac34ac3 | 299 | default: |
00a69b89 ILT |
300 | add = make_expr_symbol (exp); |
301 | break; | |
5ac34ac3 ILT |
302 | } |
303 | ||
304 | return fix_new_internal (frag, where, size, add, sub, off, | |
305 | pcrel, r_type); | |
306 | } | |
307 | ||
43ca9aa6 KR |
308 | /* Append a string onto another string, bumping the pointer along. */ |
309 | void | |
310 | append (charPP, fromP, length) | |
311 | char **charPP; | |
312 | char *fromP; | |
313 | unsigned long length; | |
314 | { | |
315 | /* Don't trust memcpy() of 0 chars. */ | |
316 | if (length == 0) | |
317 | return; | |
318 | ||
80aab579 | 319 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
320 | *charPP += length; |
321 | } | |
322 | ||
5d0cd0b8 | 323 | #ifndef BFD_ASSEMBLER |
43ca9aa6 KR |
324 | int section_alignment[SEG_MAXIMUM_ORDINAL]; |
325 | #endif | |
326 | ||
327 | /* | |
328 | * This routine records the largest alignment seen for each segment. | |
329 | * If the beginning of the segment is aligned on the worst-case | |
330 | * boundary, all of the other alignments within it will work. At | |
331 | * least one object format really uses this info. | |
332 | */ | |
5d0cd0b8 | 333 | void |
43ca9aa6 KR |
334 | record_alignment (seg, align) |
335 | /* Segment to which alignment pertains */ | |
336 | segT seg; | |
337 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
338 | boundary, etc.) */ | |
339 | int align; | |
340 | { | |
5c800455 ILT |
341 | if (seg == absolute_section) |
342 | return; | |
43ca9aa6 KR |
343 | #ifdef BFD_ASSEMBLER |
344 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
345 | bfd_set_section_alignment (stdoutput, seg, align); | |
346 | #else | |
347 | if (align > section_alignment[(int) seg]) | |
348 | section_alignment[(int) seg] = align; | |
349 | #endif | |
350 | } | |
351 | ||
a55774a1 KR |
352 | #ifdef BFD_ASSEMBLER |
353 | ||
354 | /* Reset the section indices after removing the gas created sections. */ | |
355 | ||
356 | static void | |
357 | renumber_sections (abfd, sec, countparg) | |
358 | bfd *abfd; | |
359 | asection *sec; | |
360 | PTR countparg; | |
361 | { | |
362 | int *countp = (int *) countparg; | |
363 | ||
364 | sec->index = *countp; | |
365 | ++*countp; | |
366 | } | |
367 | ||
368 | #endif /* defined (BFD_ASSEMBLER) */ | |
369 | ||
43ca9aa6 KR |
370 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) |
371 | ||
372 | static fragS * | |
373 | chain_frchains_together_1 (section, frchp) | |
374 | segT section; | |
375 | struct frchain *frchp; | |
376 | { | |
377 | fragS dummy, *prev_frag = &dummy; | |
b04bc423 | 378 | #ifdef BFD_ASSEMBLER |
3f81f3cf | 379 | fixS fix_dummy, *prev_fix = &fix_dummy; |
b04bc423 | 380 | #endif |
262b22cd | 381 | |
43ca9aa6 KR |
382 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) |
383 | { | |
384 | prev_frag->fr_next = frchp->frch_root; | |
385 | prev_frag = frchp->frch_last; | |
96fe71e1 | 386 | assert (prev_frag->fr_type != 0); |
3a0e38ee | 387 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
388 | if (frchp->fix_root != (fixS *) NULL) |
389 | { | |
390 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
391 | seg_info (section)->fix_root = frchp->fix_root; | |
392 | prev_fix->fx_next = frchp->fix_root; | |
1b96bdce | 393 | seg_info (section)->fix_tail = frchp->fix_tail; |
262b22cd ILT |
394 | prev_fix = frchp->fix_tail; |
395 | } | |
3a0e38ee | 396 | #endif |
43ca9aa6 | 397 | } |
96fe71e1 | 398 | assert (prev_frag->fr_type != 0); |
43ca9aa6 KR |
399 | prev_frag->fr_next = 0; |
400 | return prev_frag; | |
401 | } | |
402 | ||
403 | #endif | |
404 | ||
405 | #ifdef BFD_ASSEMBLER | |
406 | ||
407 | static void | |
408 | chain_frchains_together (abfd, section, xxx) | |
409 | bfd *abfd; /* unused */ | |
410 | segT section; | |
a58374d7 | 411 | PTR xxx; /* unused */ |
43ca9aa6 | 412 | { |
f2f7d044 ILT |
413 | segment_info_type *info; |
414 | ||
415 | /* BFD may have introduced its own sections without using | |
416 | subseg_new, so it is possible that seg_info is NULL. */ | |
417 | info = seg_info (section); | |
418 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
419 | info->frchainP->frch_last |
420 | = chain_frchains_together_1 (section, info->frchainP); | |
1b96bdce ILT |
421 | |
422 | /* Now that we've chained the frags together, we must add new fixups | |
423 | to the segment, not to the frag chain. */ | |
424 | frags_chained = 1; | |
43ca9aa6 KR |
425 | } |
426 | ||
427 | #endif | |
542e1629 | 428 | |
d5364748 | 429 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 430 | |
5d0cd0b8 | 431 | void |
6efd877d KR |
432 | remove_subsegs (head, seg, root, last) |
433 | frchainS *head; | |
434 | int seg; | |
435 | fragS **root; | |
436 | fragS **last; | |
65bfcf2e | 437 | { |
65bfcf2e | 438 | *root = head->frch_root; |
43ca9aa6 KR |
439 | *last = chain_frchains_together_1 (seg, head); |
440 | } | |
441 | ||
442 | #endif /* BFD */ | |
443 | ||
80aab579 ILT |
444 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
445 | ||
43ca9aa6 | 446 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
447 | static void |
448 | cvt_frag_to_fill (sec, fragP) | |
449 | segT sec; | |
43ca9aa6 | 450 | fragS *fragP; |
43ca9aa6 | 451 | #else |
58d4951d | 452 | static void |
d4083e29 | 453 | cvt_frag_to_fill (headersP, sec, fragP) |
3f81f3cf | 454 | object_headers *headersP; |
d4083e29 | 455 | segT sec; |
58d4951d | 456 | fragS *fragP; |
43ca9aa6 | 457 | #endif |
58d4951d | 458 | { |
43ca9aa6 | 459 | switch (fragP->fr_type) |
6efd877d | 460 | { |
43ca9aa6 | 461 | case rs_align: |
cd3b81bd | 462 | case rs_align_code: |
43ca9aa6 | 463 | case rs_org: |
cd3b81bd | 464 | case rs_space: |
43ca9aa6 KR |
465 | #ifdef HANDLE_ALIGN |
466 | HANDLE_ALIGN (fragP); | |
467 | #endif | |
43ca9aa6 | 468 | know (fragP->fr_next != NULL); |
43ca9aa6 KR |
469 | fragP->fr_offset = (fragP->fr_next->fr_address |
470 | - fragP->fr_address | |
98c6bbbe | 471 | - fragP->fr_fix) / fragP->fr_var; |
c151fd1e KR |
472 | if (fragP->fr_offset < 0) |
473 | { | |
474 | as_bad ("attempt to .org/.space backwards? (%ld)", | |
475 | (long) fragP->fr_offset); | |
476 | } | |
cd3b81bd | 477 | fragP->fr_type = rs_fill; |
43ca9aa6 | 478 | break; |
65bfcf2e | 479 | |
43ca9aa6 KR |
480 | case rs_fill: |
481 | break; | |
482 | ||
483 | case rs_machine_dependent: | |
484 | #ifdef BFD_ASSEMBLER | |
485 | md_convert_frag (stdoutput, sec, fragP); | |
486 | #else | |
d4083e29 | 487 | md_convert_frag (headersP, sec, fragP); |
43ca9aa6 KR |
488 | #endif |
489 | ||
d5364748 | 490 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
491 | |
492 | /* | |
493 | * After md_convert_frag, we make the frag into a ".space 0". | |
494 | * Md_convert_frag() should set up any fixSs and constants | |
495 | * required. | |
496 | */ | |
497 | frag_wane (fragP); | |
498 | break; | |
499 | ||
500 | #ifndef WORKING_DOT_WORD | |
501 | case rs_broken_word: | |
502 | { | |
503 | struct broken_word *lie; | |
504 | ||
505 | if (fragP->fr_subtype) | |
506 | { | |
507 | fragP->fr_fix += md_short_jump_size; | |
508 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
509 | lie && lie->dispfrag == fragP; | |
510 | lie = lie->next_broken_word) | |
511 | if (lie->added == 1) | |
512 | fragP->fr_fix += md_long_jump_size; | |
513 | } | |
514 | frag_wane (fragP); | |
515 | } | |
516 | break; | |
517 | #endif | |
518 | ||
519 | default: | |
520 | BAD_CASE (fragP->fr_type); | |
521 | break; | |
6efd877d | 522 | } |
65bfcf2e | 523 | } |
6efd877d | 524 | |
80aab579 ILT |
525 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
526 | ||
43ca9aa6 KR |
527 | #ifdef BFD_ASSEMBLER |
528 | static void | |
529 | relax_and_size_seg (abfd, sec, xxx) | |
530 | bfd *abfd; | |
531 | asection *sec; | |
a58374d7 | 532 | PTR xxx; |
43ca9aa6 KR |
533 | { |
534 | flagword flags; | |
13e9182d KR |
535 | fragS *fragp; |
536 | segment_info_type *seginfo; | |
537 | int x; | |
538 | valueT size, newsize; | |
43ca9aa6 | 539 | |
f00f5ecd ILT |
540 | subseg_change (sec, 0); |
541 | ||
43ca9aa6 KR |
542 | flags = bfd_get_section_flags (abfd, sec); |
543 | ||
d9d6f094 | 544 | seginfo = seg_info (sec); |
13e9182d | 545 | if (seginfo && seginfo->frchainP) |
43ca9aa6 | 546 | { |
13e9182d KR |
547 | relax_segment (seginfo->frchainP->frch_root, sec); |
548 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
549 | cvt_frag_to_fill (sec, fragp); | |
550 | for (fragp = seginfo->frchainP->frch_root; | |
551 | fragp->fr_next; | |
552 | fragp = fragp->fr_next) | |
553 | /* walk to last elt */; | |
554 | size = fragp->fr_address + fragp->fr_fix; | |
555 | } | |
556 | else | |
557 | size = 0; | |
a58374d7 ILT |
558 | |
559 | if (size > 0 && ! seginfo->bss) | |
560 | flags |= SEC_HAS_CONTENTS; | |
561 | ||
562 | /* @@ This is just an approximation. */ | |
5f6efd5a | 563 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
564 | flags |= SEC_RELOC; |
565 | else | |
566 | flags &= ~SEC_RELOC; | |
567 | x = bfd_set_section_flags (abfd, sec, flags); | |
568 | assert (x == true); | |
569 | ||
20b39b6f JL |
570 | newsize = md_section_align (sec, size); |
571 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
572 | assert (x == true); |
573 | ||
574 | /* If the size had to be rounded up, add some padding in the last | |
575 | non-empty frag. */ | |
13e9182d KR |
576 | assert (newsize >= size); |
577 | if (size != newsize) | |
578 | { | |
579 | fragS *last = seginfo->frchainP->frch_last; | |
580 | fragp = seginfo->frchainP->frch_root; | |
581 | while (fragp->fr_next != last) | |
582 | fragp = fragp->fr_next; | |
583 | last->fr_address = size; | |
584 | fragp->fr_offset += newsize - size; | |
585 | } | |
586 | ||
43ca9aa6 KR |
587 | #ifdef tc_frob_section |
588 | tc_frob_section (sec); | |
589 | #endif | |
590 | #ifdef obj_frob_section | |
591 | obj_frob_section (sec); | |
592 | #endif | |
593 | } | |
594 | ||
d5364748 KR |
595 | #ifdef DEBUG2 |
596 | static void | |
597 | dump_section_relocs (abfd, sec, stream_) | |
598 | bfd *abfd; | |
599 | asection *sec; | |
600 | char *stream_; | |
601 | { | |
602 | FILE *stream = (FILE *) stream_; | |
603 | segment_info_type *seginfo = seg_info (sec); | |
604 | fixS *fixp = seginfo->fix_root; | |
605 | ||
606 | if (!fixp) | |
607 | return; | |
608 | ||
609 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
610 | while (fixp) | |
611 | { | |
612 | symbolS *s = fixp->fx_addsy; | |
613 | if (s) | |
1cf7548e KR |
614 | { |
615 | fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), | |
616 | s->bsym->section->name); | |
617 | if (s->bsym->flags & BSF_SECTION_SYM) | |
618 | { | |
619 | fprintf (stream, " section sym"); | |
620 | if (S_GET_VALUE (s)) | |
621 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
622 | } | |
623 | else | |
624 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
625 | fprintf (stream, ")+%x\n", fixp->fx_offset); | |
626 | } | |
d5364748 KR |
627 | else |
628 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
629 | fixp = fixp->fx_next; | |
630 | } | |
631 | } | |
632 | #else | |
8095b665 | 633 | #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0) |
d5364748 KR |
634 | #endif |
635 | ||
98c6bbbe KR |
636 | #ifndef EMIT_SECTION_SYMBOLS |
637 | #define EMIT_SECTION_SYMBOLS 1 | |
638 | #endif | |
639 | ||
d5364748 KR |
640 | static void |
641 | adjust_reloc_syms (abfd, sec, xxx) | |
642 | bfd *abfd; | |
643 | asection *sec; | |
a58374d7 | 644 | PTR xxx; |
d5364748 KR |
645 | { |
646 | segment_info_type *seginfo = seg_info (sec); | |
647 | fixS *fixp; | |
648 | ||
649 | if (seginfo == NULL) | |
650 | return; | |
651 | ||
652 | dump_section_relocs (abfd, sec, stderr); | |
653 | ||
654 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
98c6bbbe KR |
655 | if (fixp->fx_done) |
656 | /* ignore it */; | |
657 | else if (fixp->fx_addsy) | |
d5364748 | 658 | { |
a55774a1 | 659 | symbolS *sym; |
4acf8c78 KR |
660 | asection *symsec; |
661 | ||
662 | reduce_fixup: | |
663 | ||
a55774a1 KR |
664 | #ifdef DEBUG5 |
665 | fprintf (stderr, "\n\nadjusting fixup:\n"); | |
666 | print_fixup (fixp); | |
667 | #endif | |
668 | ||
669 | sym = fixp->fx_addsy; | |
4acf8c78 | 670 | symsec = sym->bsym->section; |
d5364748 | 671 | |
73d25784 ILT |
672 | /* All symbols should have already been resolved at this |
673 | point. It is possible to see unresolved expression | |
674 | symbols, though, since they are not in the regular symbol | |
675 | table. */ | |
676 | if (sym != NULL && ! sym->sy_resolved) | |
677 | resolve_symbol_value (sym); | |
678 | if (fixp->fx_subsy != NULL && ! fixp->fx_subsy->sy_resolved) | |
679 | resolve_symbol_value (fixp->fx_subsy); | |
680 | ||
e120d9fb | 681 | if (sym != NULL && sym->sy_mri_common) |
1356d77d ILT |
682 | { |
683 | /* These symbols are handled specially in fixup_segment. */ | |
684 | goto done; | |
685 | } | |
686 | ||
8095b665 ILT |
687 | if (bfd_is_abs_section (symsec)) |
688 | { | |
689 | /* The fixup_segment routine will not use this symbol in a | |
690 | relocation unless TC_FORCE_RELOCATION returns 1. */ | |
691 | if (TC_FORCE_RELOCATION (fixp)) | |
692 | { | |
693 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
694 | #ifdef UNDEFINED_DIFFERENCE_OK | |
695 | if (fixp->fx_subsy != NULL) | |
696 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
697 | #endif | |
698 | } | |
699 | goto done; | |
700 | } | |
701 | ||
a58374d7 ILT |
702 | /* If it's one of these sections, assume the symbol is |
703 | definitely going to be output. The code in | |
704 | md_estimate_size_before_relax in tc-mips.c uses this test | |
705 | as well, so if you change this code you should look at that | |
706 | code. */ | |
cd3b81bd | 707 | if (bfd_is_und_section (symsec) |
d5364748 | 708 | || bfd_is_com_section (symsec)) |
80aab579 ILT |
709 | { |
710 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
d4083e29 KR |
711 | #ifdef UNDEFINED_DIFFERENCE_OK |
712 | /* We have the difference of an undefined symbol and some | |
713 | other symbol. Make sure to mark the other symbol as used | |
714 | in a relocation so that it will always be output. */ | |
715 | if (fixp->fx_subsy) | |
716 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
717 | #endif | |
a55774a1 | 718 | goto done; |
80aab579 | 719 | } |
d5364748 KR |
720 | |
721 | /* Since we're reducing to section symbols, don't attempt to reduce | |
722 | anything that's already using one. */ | |
98c6bbbe | 723 | if (sym->bsym->flags & BSF_SECTION_SYM) |
80aab579 ILT |
724 | { |
725 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 726 | goto done; |
80aab579 | 727 | } |
d5364748 KR |
728 | |
729 | /* Is there some other reason we can't adjust this one? (E.g., | |
730 | call/bal links in i960-bout symbols.) */ | |
731 | #ifdef obj_fix_adjustable | |
732 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
733 | { |
734 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 735 | goto done; |
80aab579 | 736 | } |
d5364748 | 737 | #endif |
efa0c22e KR |
738 | |
739 | /* Is there some other (target cpu dependent) reason we can't adjust | |
5d0cd0b8 | 740 | this one? (E.g. relocations involving function addresses on |
efa0c22e KR |
741 | the PA. */ |
742 | #ifdef tc_fix_adjustable | |
743 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
744 | { |
745 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 746 | goto done; |
20b39b6f | 747 | } |
efa0c22e KR |
748 | #endif |
749 | ||
4acf8c78 KR |
750 | /* For PIC support: We may get expressions like |
751 | "_GLOBAL_OFFSET_TABLE_+(.-L5)" where "." and "L5" may not | |
752 | necessarily have had a fixed difference initially. But now | |
753 | it should be a known constant, so we can reduce it. Since | |
754 | we can't easily handle a symbol value that looks like | |
755 | someUndefinedSymbol+const, though, we convert the fixup to | |
756 | access the undefined symbol directly, and discard the | |
757 | intermediate symbol. */ | |
758 | if (S_GET_SEGMENT (sym) == expr_section | |
759 | && sym->sy_value.X_op == O_add | |
760 | && (resolve_symbol_value (sym->sy_value.X_add_symbol), | |
761 | S_GET_SEGMENT (sym->sy_value.X_add_symbol) == undefined_section) | |
762 | && (resolve_symbol_value (sym->sy_value.X_op_symbol), | |
763 | S_GET_SEGMENT (sym->sy_value.X_op_symbol) == absolute_section)) | |
764 | { | |
765 | fixp->fx_offset += S_GET_VALUE (sym->sy_value.X_op_symbol); | |
766 | fixp->fx_offset += sym->sy_value.X_add_number; | |
a55774a1 | 767 | fixp->fx_addsy = sym->sy_value.X_add_symbol; |
4acf8c78 KR |
768 | goto reduce_fixup; |
769 | } | |
770 | ||
d5364748 KR |
771 | /* If the section symbol isn't going to be output, the relocs |
772 | at least should still work. If not, figure out what to do | |
5d0cd0b8 ILT |
773 | when we run into that case. |
774 | ||
775 | We refetch the segment when calling section_symbol, rather | |
776 | than using symsec, because S_GET_VALUE may wind up changing | |
777 | the section when it calls resolve_symbol_value. */ | |
d5364748 | 778 | fixp->fx_offset += S_GET_VALUE (sym); |
5d0cd0b8 | 779 | fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym)); |
80aab579 | 780 | fixp->fx_addsy->sy_used_in_reloc = 1; |
a55774a1 KR |
781 | |
782 | done: | |
783 | ; | |
d5364748 | 784 | } |
1cf7548e | 785 | #if 1/*def RELOC_REQUIRES_SYMBOL*/ |
e67a0640 KR |
786 | else |
787 | { | |
788 | /* There was no symbol required by this relocation. However, | |
789 | BFD doesn't really handle relocations without symbols well. | |
790 | (At least, the COFF support doesn't.) So for now we fake up | |
791 | a local symbol in the absolute section. */ | |
e8501a72 | 792 | |
1cf7548e | 793 | fixp->fx_addsy = section_symbol (absolute_section); |
a55774a1 | 794 | /* fixp->fx_addsy->sy_used_in_reloc = 1; */ |
e67a0640 KR |
795 | } |
796 | #endif | |
d5364748 KR |
797 | |
798 | dump_section_relocs (abfd, sec, stderr); | |
799 | } | |
800 | ||
43ca9aa6 | 801 | static void |
8d6c34a1 | 802 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
803 | bfd *abfd; |
804 | asection *sec; | |
a58374d7 | 805 | PTR xxx; |
43ca9aa6 KR |
806 | { |
807 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
808 | int i; |
809 | unsigned int n; | |
43ca9aa6 KR |
810 | arelent **relocs; |
811 | fixS *fixp; | |
98c6bbbe | 812 | char *err; |
43ca9aa6 | 813 | |
d5364748 KR |
814 | /* If seginfo is NULL, we did not create this section; don't do |
815 | anything with it. */ | |
816 | if (seginfo == NULL) | |
43ca9aa6 KR |
817 | return; |
818 | ||
819 | fixup_segment (seginfo->fix_root, sec); | |
820 | ||
3d3c5039 | 821 | n = 0; |
d5364748 KR |
822 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
823 | n++; | |
43ca9aa6 | 824 | |
d5364748 | 825 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 826 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
827 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
828 | n * sizeof (arelent *)); | |
8d6c34a1 | 829 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 830 | |
3d3c5039 ILT |
831 | i = 0; |
832 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
833 | { | |
834 | arelent *reloc; | |
3d3c5039 | 835 | bfd_reloc_status_type s; |
a043f579 | 836 | symbolS *sym; |
3d3c5039 | 837 | |
98c6bbbe | 838 | if (fixp->fx_done) |
3d3c5039 | 839 | { |
3d3c5039 ILT |
840 | n--; |
841 | continue; | |
842 | } | |
a043f579 ILT |
843 | |
844 | /* If this is an undefined symbol which was equated to another | |
845 | symbol, then use generate the reloc against the latter symbol | |
846 | rather than the former. */ | |
847 | sym = fixp->fx_addsy; | |
848 | while (sym->sy_value.X_op == O_symbol | |
849 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
850 | sym = sym->sy_value.X_add_symbol; | |
851 | fixp->fx_addsy = sym; | |
852 | ||
3d3c5039 ILT |
853 | reloc = tc_gen_reloc (sec, fixp); |
854 | if (!reloc) | |
855 | { | |
856 | n--; | |
857 | continue; | |
858 | } | |
5d0cd0b8 ILT |
859 | |
860 | #if 0 | |
861 | /* This test is triggered inappropriately for the SH. */ | |
c43d56f7 | 862 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
863 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
864 | abort (); | |
5d0cd0b8 | 865 | #endif |
335d35c8 | 866 | |
4acf8c78 KR |
867 | s = bfd_install_relocation (stdoutput, reloc, |
868 | fixp->fx_frag->fr_literal, | |
869 | fixp->fx_frag->fr_address, | |
870 | sec, &err); | |
3d3c5039 ILT |
871 | switch (s) |
872 | { | |
873 | case bfd_reloc_ok: | |
874 | break; | |
df44a852 KR |
875 | case bfd_reloc_overflow: |
876 | as_bad_where (fixp->fx_file, fixp->fx_line, "relocation overflow"); | |
877 | break; | |
3d3c5039 | 878 | default: |
4acf8c78 KR |
879 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
880 | fixp->fx_file, fixp->fx_line); | |
3d3c5039 ILT |
881 | } |
882 | relocs[i++] = reloc; | |
883 | } | |
d5364748 KR |
884 | #else |
885 | n = n * MAX_RELOC_EXPANSION; | |
886 | /* Set up reloc information as well. */ | |
887 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
888 | n * sizeof (arelent *)); | |
889 | ||
890 | i = 0; | |
891 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
892 | { | |
893 | arelent **reloc; | |
d5364748 KR |
894 | char *data; |
895 | bfd_reloc_status_type s; | |
a043f579 | 896 | symbolS *sym; |
d5364748 KR |
897 | int j; |
898 | ||
98c6bbbe | 899 | if (fixp->fx_done) |
d5364748 | 900 | { |
d5364748 KR |
901 | n--; |
902 | continue; | |
903 | } | |
a043f579 ILT |
904 | |
905 | /* If this is an undefined symbol which was equated to another | |
906 | symbol, then use generate the reloc against the latter symbol | |
907 | rather than the former. */ | |
908 | sym = fixp->fx_addsy; | |
909 | while (sym->sy_value.X_op == O_symbol | |
910 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
911 | sym = sym->sy_value.X_add_symbol; | |
912 | fixp->fx_addsy = sym; | |
913 | ||
d5364748 KR |
914 | reloc = tc_gen_reloc (sec, fixp); |
915 | ||
916 | for (j = 0; reloc[j]; j++) | |
917 | { | |
918 | relocs[i++] = reloc[j]; | |
919 | assert(i <= n); | |
920 | } | |
921 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 922 | if (fixp->fx_where + fixp->fx_size |
d5364748 | 923 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
73d25784 ILT |
924 | as_bad_where (fixp->fx_file, fixp->fx_line, |
925 | "internal error: fixup not contained within frag"); | |
d5364748 KR |
926 | for (j = 0; reloc[j]; j++) |
927 | { | |
a55774a1 KR |
928 | s = bfd_install_relocation (stdoutput, reloc[j], |
929 | fixp->fx_frag->fr_literal, | |
930 | fixp->fx_frag->fr_address, | |
931 | sec, &err); | |
d5364748 KR |
932 | switch (s) |
933 | { | |
98c6bbbe KR |
934 | case bfd_reloc_ok: |
935 | break; | |
4acf8c78 KR |
936 | case bfd_reloc_overflow: |
937 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
938 | "relocation overflow"); | |
939 | break; | |
98c6bbbe | 940 | default: |
4acf8c78 KR |
941 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
942 | fixp->fx_file, fixp->fx_line); | |
d5364748 KR |
943 | } |
944 | } | |
945 | } | |
946 | n = i; | |
947 | #endif | |
948 | ||
1cf7548e KR |
949 | #ifdef DEBUG4 |
950 | { | |
951 | int i, j, nsyms; | |
952 | asymbol **sympp; | |
953 | sympp = bfd_get_outsymbols (stdoutput); | |
954 | nsyms = bfd_get_symcount (stdoutput); | |
955 | for (i = 0; i < n; i++) | |
956 | if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) | |
957 | { | |
958 | for (j = 0; j < nsyms; j++) | |
959 | if (sympp[j] == *relocs[i]->sym_ptr_ptr) | |
960 | break; | |
961 | if (j == nsyms) | |
962 | abort (); | |
963 | } | |
964 | } | |
965 | #endif | |
966 | ||
3d3c5039 ILT |
967 | if (n) |
968 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
969 | else |
970 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
971 | (bfd_get_section_flags (abfd, sec) |
972 | & (flagword) ~SEC_RELOC)); | |
98c6bbbe KR |
973 | |
974 | #ifdef DEBUG3 | |
d5364748 KR |
975 | { |
976 | int i; | |
977 | arelent *r; | |
978 | asymbol *s; | |
979 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
980 | for (i = 0; i < n; i++) | |
981 | { | |
982 | r = relocs[i]; | |
983 | s = *r->sym_ptr_ptr; | |
984 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
985 | i, r, r->address, s->name, r->addend); | |
986 | } | |
987 | } | |
988 | #endif | |
8d6c34a1 | 989 | } |
d5364748 | 990 | |
8d6c34a1 KR |
991 | static void |
992 | write_contents (abfd, sec, xxx) | |
993 | bfd *abfd; | |
994 | asection *sec; | |
a58374d7 | 995 | PTR xxx; |
8d6c34a1 KR |
996 | { |
997 | segment_info_type *seginfo = seg_info (sec); | |
998 | unsigned long offset = 0; | |
80aab579 | 999 | fragS *f; |
3d3c5039 ILT |
1000 | |
1001 | /* Write out the frags. */ | |
f37449aa ILT |
1002 | if (seginfo == NULL |
1003 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
1004 | return; |
1005 | ||
80aab579 ILT |
1006 | for (f = seginfo->frchainP->frch_root; |
1007 | f; | |
1008 | f = f->fr_next) | |
43ca9aa6 KR |
1009 | { |
1010 | int x; | |
1011 | unsigned long fill_size; | |
1012 | char *fill_literal; | |
1013 | long count; | |
1014 | ||
80aab579 ILT |
1015 | assert (f->fr_type == rs_fill); |
1016 | if (f->fr_fix) | |
43ca9aa6 KR |
1017 | { |
1018 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
1019 | f->fr_literal, (file_ptr) offset, |
1020 | (bfd_size_type) f->fr_fix); | |
1cf7548e KR |
1021 | if (x == false) |
1022 | { | |
1023 | bfd_perror (stdoutput->filename); | |
1024 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
4acf8c78 | 1025 | exit (EXIT_FAILURE); |
1cf7548e | 1026 | } |
80aab579 | 1027 | offset += f->fr_fix; |
43ca9aa6 | 1028 | } |
80aab579 ILT |
1029 | fill_literal = f->fr_literal + f->fr_fix; |
1030 | fill_size = f->fr_var; | |
1031 | count = f->fr_offset; | |
43ca9aa6 KR |
1032 | assert (count >= 0); |
1033 | if (fill_size && count) | |
d9d6f094 KR |
1034 | { |
1035 | char buf[256]; | |
305a3af6 SC |
1036 | if (fill_size > sizeof(buf)) |
1037 | { | |
1038 | /* Do it the old way. Can this ever happen? */ | |
1039 | while (count--) | |
1040 | { | |
1041 | x = bfd_set_section_contents (stdoutput, sec, | |
1042 | fill_literal, | |
1043 | (file_ptr) offset, | |
1044 | (bfd_size_type) fill_size); | |
1045 | if (x == false) | |
1046 | { | |
1047 | bfd_perror (stdoutput->filename); | |
1048 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
1049 | exit (EXIT_FAILURE); | |
1050 | } | |
1051 | offset += fill_size; | |
1052 | } | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | /* Build a buffer full of fill objects and output it as | |
1057 | often as necessary. This saves on the overhead of | |
1058 | potentially lots of bfd_set_section_contents calls. */ | |
1059 | int n_per_buf, i; | |
1060 | if (fill_size == 1) | |
1061 | { | |
1062 | n_per_buf = sizeof (buf); | |
1063 | memset (buf, *fill_literal, n_per_buf); | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | char *bufp; | |
1068 | n_per_buf = sizeof(buf)/fill_size; | |
1069 | for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) | |
1070 | memcpy(bufp, fill_literal, fill_size); | |
1071 | } | |
1072 | for (; count > 0; count -= n_per_buf) | |
1073 | { | |
1074 | n_per_buf = n_per_buf > count ? count : n_per_buf; | |
1075 | x = bfd_set_section_contents (stdoutput, sec, | |
1076 | buf, (file_ptr) offset, | |
1077 | (bfd_size_type) n_per_buf * fill_size); | |
1078 | if (x != true) | |
1079 | as_fatal ("Cannot write to output file."); | |
1080 | offset += n_per_buf * fill_size; | |
1081 | } | |
1082 | } | |
d9d6f094 | 1083 | } |
43ca9aa6 | 1084 | } |
43ca9aa6 KR |
1085 | } |
1086 | #endif | |
1087 | ||
80aab579 | 1088 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
1089 | static void |
1090 | merge_data_into_text () | |
1091 | { | |
4064305e | 1092 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
1093 | seg_info (text_section)->frchainP->frch_last->fr_next = |
1094 | seg_info (data_section)->frchainP->frch_root; | |
1095 | seg_info (text_section)->frchainP->frch_last = | |
1096 | seg_info (data_section)->frchainP->frch_last; | |
1097 | seg_info (data_section)->frchainP = 0; | |
1098 | #else | |
1099 | fixS *tmp; | |
1100 | ||
1101 | text_last_frag->fr_next = data_frag_root; | |
1102 | text_last_frag = data_last_frag; | |
1103 | data_last_frag = NULL; | |
1104 | data_frag_root = NULL; | |
1105 | if (text_fix_root) | |
1106 | { | |
1107 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
1108 | tmp->fx_next = data_fix_root; | |
1109 | text_fix_tail = data_fix_tail; | |
1110 | } | |
1111 | else | |
1112 | text_fix_root = data_fix_root; | |
1113 | data_fix_root = NULL; | |
1114 | #endif | |
1115 | } | |
80aab579 | 1116 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
1117 | |
1118 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
1119 | static void | |
1120 | relax_and_size_all_segments () | |
1121 | { | |
13e9182d KR |
1122 | fragS *fragP; |
1123 | ||
b23f6743 KR |
1124 | relax_segment (text_frag_root, SEG_TEXT); |
1125 | relax_segment (data_frag_root, SEG_DATA); | |
1126 | relax_segment (bss_frag_root, SEG_BSS); | |
1127 | /* | |
1128 | * Now the addresses of frags are correct within the segment. | |
1129 | */ | |
1130 | ||
1131 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
1132 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
1133 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
1134 | ||
1135 | /* | |
1136 | * Join the 2 segments into 1 huge segment. | |
1137 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
1138 | * Then join the data frags after the text frags. | |
1139 | * | |
1140 | * Determine a_data [length of data segment]. | |
1141 | */ | |
1142 | if (data_frag_root) | |
1143 | { | |
1144 | register relax_addressT slide; | |
1145 | ||
1146 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
1147 | ||
1148 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
1149 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
1150 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
1151 | #ifdef OBJ_BOUT | |
1152 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
1153 | /* For b.out: If the data section has a strict alignment | |
1154 | requirement, its load address in the .o file will be | |
1155 | rounded up from the size of the text section. These | |
1156 | two values are *not* the same! Similarly for the bss | |
1157 | section.... */ | |
1158 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
1159 | #endif | |
1160 | ||
1161 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
1162 | { | |
1163 | fragP->fr_address += slide; | |
1164 | } /* for each data frag */ | |
1165 | ||
1166 | know (text_last_frag != 0); | |
1167 | text_last_frag->fr_next = data_frag_root; | |
1168 | } | |
1169 | else | |
1170 | { | |
1171 | H_SET_DATA_SIZE (&headers, 0); | |
1172 | } | |
1173 | ||
1174 | #ifdef OBJ_BOUT | |
1175 | /* See above comments on b.out data section address. */ | |
1176 | { | |
1177 | long bss_vma; | |
1178 | if (data_last_frag == 0) | |
1179 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
1180 | else | |
1181 | bss_vma = data_last_frag->fr_address; | |
1182 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
1183 | bss_address_frag.fr_address = bss_vma; | |
1184 | } | |
1185 | #else /* ! OBJ_BOUT */ | |
1186 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
1187 | H_GET_DATA_SIZE (&headers)); | |
1188 | ||
efa0c22e | 1189 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
1190 | |
1191 | /* Slide all the frags */ | |
1192 | if (bss_frag_root) | |
1193 | { | |
1194 | relax_addressT slide = bss_address_frag.fr_address; | |
1195 | ||
1196 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
1197 | { | |
1198 | fragP->fr_address += slide; | |
1199 | } /* for each bss frag */ | |
1200 | } | |
1201 | ||
b23f6743 KR |
1202 | if (bss_last_frag) |
1203 | H_SET_BSS_SIZE (&headers, | |
1204 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
1205 | else | |
1206 | H_SET_BSS_SIZE (&headers, 0); | |
1207 | } | |
1208 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
1209 | ||
d5364748 KR |
1210 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1211 | ||
1b96bdce | 1212 | #ifdef BFD_ASSEMBLER |
1cf7548e KR |
1213 | static void |
1214 | set_symtab () | |
1215 | { | |
1216 | int nsyms; | |
1217 | asymbol **asympp; | |
1218 | symbolS *symp; | |
1219 | boolean result; | |
1220 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); | |
1221 | ||
1222 | /* Count symbols. We can't rely on a count made by the loop in | |
1223 | write_object_file, because *_frob_file may add a new symbol or | |
1224 | two. */ | |
1225 | nsyms = 0; | |
1226 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1227 | nsyms++; | |
1228 | ||
1229 | if (nsyms) | |
1230 | { | |
1231 | int i; | |
1232 | ||
1233 | asympp = (asymbol **) bfd_alloc (stdoutput, | |
1234 | nsyms * sizeof (asymbol *)); | |
1235 | symp = symbol_rootP; | |
1236 | for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) | |
1237 | { | |
1238 | asympp[i] = symp->bsym; | |
1239 | symp->written = 1; | |
1240 | } | |
1241 | } | |
1242 | else | |
1243 | asympp = 0; | |
1244 | result = bfd_set_symtab (stdoutput, asympp, nsyms); | |
1245 | assert (result == true); | |
1246 | symbol_table_frozen = 1; | |
1247 | } | |
1b96bdce | 1248 | #endif |
1cf7548e | 1249 | |
5d0cd0b8 | 1250 | void |
6efd877d | 1251 | write_object_file () |
45432836 | 1252 | { |
741f4d66 | 1253 | struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 1254 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
741f4d66 | 1255 | fragS *fragP; /* Track along all frags. */ |
58d4951d | 1256 | #endif |
6efd877d | 1257 | |
43ca9aa6 KR |
1258 | /* Do we really want to write it? */ |
1259 | { | |
1260 | int n_warns, n_errs; | |
1261 | n_warns = had_warnings (); | |
1262 | n_errs = had_errors (); | |
1263 | /* The -Z flag indicates that an object file should be generated, | |
1264 | regardless of warnings and errors. */ | |
def66e24 | 1265 | if (flag_always_generate_output) |
43ca9aa6 KR |
1266 | { |
1267 | if (n_warns || n_errs) | |
1268 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
1269 | n_errs, n_errs == 1 ? "" : "s", | |
1270 | n_warns, n_warns == 1 ? "" : "s"); | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | if (n_errs) | |
1275 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
1276 | n_errs, n_errs == 1 ? "" : "s", | |
1277 | n_warns, n_warns == 1 ? "" : "s"); | |
1278 | } | |
1279 | } | |
1280 | ||
3eb802b5 | 1281 | #ifdef OBJ_VMS |
1cf7548e KR |
1282 | /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call |
1283 | a routine to check for the definition of the procedure "_main", | |
1284 | and if so -- fix it up so that it can be program entry point. */ | |
8e86815b | 1285 | vms_check_for_main (); |
3f81f3cf | 1286 | #endif /* OBJ_VMS */ |
43ca9aa6 KR |
1287 | |
1288 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
1289 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
1290 | frag that requires least thought. ".align" frags like to have a | |
1291 | following frag since that makes calculating their intended length | |
1292 | trivial. | |
1293 | ||
1294 | @@ Is this really necessary?? */ | |
3eb802b5 | 1295 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 1296 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 1297 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 1298 | #else |
f2f7d044 | 1299 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 1300 | #endif |
3eb802b5 | 1301 | #endif |
6efd877d KR |
1302 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
1303 | { | |
43ca9aa6 | 1304 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 1305 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
1306 | /* frag_align will have left a new frag. |
1307 | Use this last frag for an empty ".fill". | |
1308 | ||
1309 | For this segment ... | |
1310 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
1311 | frag_wane (frag_now); |
1312 | frag_now->fr_fix = 0; | |
1313 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 1314 | } |
6efd877d | 1315 | |
43ca9aa6 KR |
1316 | /* From now on, we don't care about sub-segments. Build one frag chain |
1317 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 1318 | |
43ca9aa6 KR |
1319 | #ifdef BFD_ASSEMBLER |
1320 | /* Remove the sections created by gas for its own purposes. */ | |
1321 | { | |
1322 | asection **seclist, *sec; | |
a55774a1 KR |
1323 | int i; |
1324 | ||
43ca9aa6 KR |
1325 | seclist = &stdoutput->sections; |
1326 | while (seclist && *seclist) | |
1327 | { | |
1328 | sec = *seclist; | |
5ac34ac3 | 1329 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1330 | { |
1331 | sec = sec->next; | |
1332 | *seclist = sec; | |
1333 | stdoutput->section_count--; | |
1334 | if (!sec) | |
1335 | break; | |
1336 | } | |
1337 | if (*seclist) | |
1338 | seclist = &(*seclist)->next; | |
1339 | } | |
a55774a1 KR |
1340 | i = 0; |
1341 | bfd_map_over_sections (stdoutput, renumber_sections, &i); | |
43ca9aa6 KR |
1342 | } |
1343 | ||
1344 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1345 | #else | |
6efd877d KR |
1346 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1347 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1348 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1349 | #endif |
6efd877d | 1350 | |
43ca9aa6 KR |
1351 | /* We have two segments. If user gave -R flag, then we must put the |
1352 | data frags into the text segment. Do this before relaxing so | |
1353 | we know to take advantage of -R and make shorter addresses. */ | |
1354 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
def66e24 | 1355 | if (flag_readonly_data_in_text) |
6efd877d | 1356 | { |
b23f6743 | 1357 | merge_data_into_text (); |
6efd877d KR |
1358 | } |
1359 | #endif | |
43ca9aa6 KR |
1360 | |
1361 | #ifdef BFD_ASSEMBLER | |
1362 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1363 | #else | |
b23f6743 | 1364 | relax_and_size_all_segments (); |
43ca9aa6 | 1365 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1366 | |
43ca9aa6 | 1367 | #ifndef BFD_ASSEMBLER |
6efd877d | 1368 | /* |
7f2cb270 KR |
1369 | * |
1370 | * Crawl the symbol chain. | |
1371 | * | |
1372 | * For each symbol whose value depends on a frag, take the address of | |
1373 | * that frag and subsume it into the value of the symbol. | |
1374 | * After this, there is just one way to lookup a symbol value. | |
1375 | * Values are left in their final state for object file emission. | |
1376 | * We adjust the values of 'L' local symbols, even if we do | |
1377 | * not intend to emit them to the object file, because their values | |
1378 | * are needed for fix-ups. | |
1379 | * | |
1380 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1381 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1382 | * | |
1383 | * Count the remaining symbols. | |
1384 | * Assign a symbol number to each symbol. | |
1385 | * Count the number of string-table chars we will emit. | |
1386 | * Put this info into the headers as appropriate. | |
1387 | * | |
1388 | */ | |
6efd877d KR |
1389 | know (zero_address_frag.fr_address == 0); |
1390 | string_byte_count = sizeof (string_byte_count); | |
1391 | ||
1392 | obj_crawl_symbol_chain (&headers); | |
1393 | ||
1394 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1395 | string_byte_count = 0; |
6efd877d KR |
1396 | |
1397 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1398 | ||
1399 | /* | |
7f2cb270 KR |
1400 | * Addresses of frags now reflect addresses we use in the object file. |
1401 | * Symbol values are correct. | |
1402 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1403 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1404 | */ | |
6efd877d KR |
1405 | subseg_change (SEG_TEXT, 0); |
1406 | ||
1407 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1408 | { | |
d4083e29 | 1409 | cvt_frag_to_fill (&headers, SEG_TEXT, fragP); |
6efd877d | 1410 | |
43ca9aa6 KR |
1411 | /* Some assert macros don't work with # directives mixed in. */ |
1412 | #ifndef NDEBUG | |
1413 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1414 | #ifdef OBJ_BOUT |
43ca9aa6 | 1415 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1416 | #endif |
6efd877d | 1417 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1418 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1419 | abort (); | |
1420 | #endif | |
1421 | } | |
1422 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1423 | |
fecd2382 | 1424 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1425 | { |
1426 | struct broken_word *lie; | |
1427 | struct broken_word **prevP; | |
1428 | ||
1429 | prevP = &broken_words; | |
1430 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1431 | if (!lie->added) | |
a39116f1 | 1432 | { |
5ac34ac3 ILT |
1433 | expressionS exp; |
1434 | ||
1435 | exp.X_op = O_subtract; | |
1436 | exp.X_add_symbol = lie->add; | |
1437 | exp.X_op_symbol = lie->sub; | |
1438 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1439 | #ifdef BFD_ASSEMBLER |
d9d6f094 KR |
1440 | #ifdef TC_CONS_FIX_NEW |
1441 | TC_CONS_FIX_NEW (lie->frag, | |
1442 | lie->word_goes_here - lie->frag->fr_literal, | |
1443 | 2, &exp); | |
1444 | #else | |
5ac34ac3 ILT |
1445 | fix_new_exp (lie->frag, |
1446 | lie->word_goes_here - lie->frag->fr_literal, | |
5d0cd0b8 | 1447 | 2, &exp, 0, BFD_RELOC_16); |
d9d6f094 | 1448 | #endif |
43ca9aa6 KR |
1449 | #else |
1450 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1451 | fix_new_exp (lie->frag, |
1452 | lie->word_goes_here - lie->frag->fr_literal, | |
1453 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1454 | #else |
fecd2382 | 1455 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1456 | fix_new_ns32k_exp (lie->frag, |
1457 | lie->word_goes_here - lie->frag->fr_literal, | |
1458 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1459 | #else |
5ac34ac3 ILT |
1460 | fix_new_exp (lie->frag, |
1461 | lie->word_goes_here - lie->frag->fr_literal, | |
1462 | 2, &exp, 0, 0); | |
fecd2382 | 1463 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1464 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1465 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1466 | *prevP = lie->next_broken_word; |
a39116f1 | 1467 | } |
6efd877d KR |
1468 | else |
1469 | prevP = &(lie->next_broken_word); | |
1470 | ||
1471 | for (lie = broken_words; lie;) | |
1472 | { | |
1473 | struct broken_word *untruth; | |
1474 | char *table_ptr; | |
d5364748 KR |
1475 | addressT table_addr; |
1476 | addressT from_addr, to_addr; | |
6efd877d KR |
1477 | int n, m; |
1478 | ||
6efd877d KR |
1479 | fragP = lie->dispfrag; |
1480 | ||
43ca9aa6 | 1481 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1482 | n = 0; |
1483 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1484 | if (untruth->added == 1) | |
1485 | n++; | |
1486 | ||
1487 | table_ptr = lie->dispfrag->fr_opcode; | |
1488 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1489 | /* Create the jump around the long jumps. This is a short |
1490 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1491 | from_addr = table_addr; |
1492 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1493 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1494 | table_ptr += md_short_jump_size; | |
1495 | table_addr += md_short_jump_size; | |
1496 | ||
1497 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1498 | { | |
1499 | if (lie->added == 2) | |
1500 | continue; | |
1501 | /* Patch the jump table */ | |
1502 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1503 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
d9d6f094 KR |
1504 | #ifdef BFD_ASSEMBLER |
1505 | to_addr -= lie->sub->sy_frag->fr_address; | |
1506 | #endif | |
6efd877d KR |
1507 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1508 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1509 | { | |
1510 | if (untruth->use_jump == lie) | |
1511 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1512 | } | |
1513 | ||
1514 | /* Install the long jump */ | |
1515 | /* this is a long jump from table_ptr+0 to the final target */ | |
1516 | from_addr = table_addr; | |
1517 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
d9d6f094 KR |
1518 | #ifdef BFD_ASSEMBLER |
1519 | to_addr += lie->add->sy_frag->fr_address; | |
1520 | #endif | |
6efd877d KR |
1521 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); |
1522 | table_ptr += md_long_jump_size; | |
1523 | table_addr += md_long_jump_size; | |
1524 | } | |
1525 | } | |
1526 | } | |
fecd2382 | 1527 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1528 | |
43ca9aa6 | 1529 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1530 | #ifndef OBJ_VMS |
6efd877d | 1531 | { /* not vms */ |
3f81f3cf | 1532 | char *the_object_file; |
1cf7548e | 1533 | long object_file_size; |
6efd877d | 1534 | /* |
3eb802b5 ILT |
1535 | * Scan every FixS performing fixups. We had to wait until now to do |
1536 | * this because md_convert_frag() may have made some fixSs. | |
1537 | */ | |
6efd877d KR |
1538 | int trsize, drsize; |
1539 | ||
1540 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1541 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1542 | subseg_change (SEG_DATA, 0); |
d5364748 | 1543 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1544 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1545 | ||
1546 | /* FIXME move this stuff into the pre-write-hook */ | |
1547 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1548 | H_SET_ENTRY_POINT (&headers, 0); | |
1549 | ||
1550 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1551 | |
1552 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1553 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1554 | ||
1555 | output_file_create (out_file_name); | |
1556 | ||
1557 | obj_header_append (&next_object_file_charP, &headers); | |
1558 | ||
1559 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1560 | ||
1561 | /* | |
43ca9aa6 KR |
1562 | * Emit code. |
1563 | */ | |
6efd877d KR |
1564 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1565 | { | |
1566 | register long count; | |
1567 | register char *fill_literal; | |
1568 | register long fill_size; | |
1569 | ||
c151fd1e | 1570 | PROGRESS (1); |
6efd877d KR |
1571 | know (fragP->fr_type == rs_fill); |
1572 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1573 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1574 | fill_size = fragP->fr_var; | |
1575 | know (fragP->fr_offset >= 0); | |
1576 | ||
1577 | for (count = fragP->fr_offset; count; count--) | |
1578 | { | |
1579 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1580 | } /* for each */ | |
1581 | ||
1582 | } /* for each code frag. */ | |
1583 | ||
1584 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1585 | ||
1586 | /* | |
43ca9aa6 KR |
1587 | * Emit relocations. |
1588 | */ | |
6efd877d KR |
1589 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
1590 | 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 | 1591 | #ifdef TC_I960 |
6efd877d | 1592 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1593 | * first data fragment, not end of last text fragment: alignment of the |
1594 | * start of the data segment may place a gap between the segments. | |
1595 | */ | |
6efd877d | 1596 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1597 | #else /* TC_I960 */ |
6efd877d | 1598 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1599 | #endif /* TC_I960 */ |
6efd877d KR |
1600 | |
1601 | 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))); | |
1602 | ||
1603 | /* | |
43ca9aa6 KR |
1604 | * Emit line number entries. |
1605 | */ | |
6efd877d KR |
1606 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1607 | 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))); | |
1608 | ||
1609 | /* | |
3eb802b5 ILT |
1610 | * Emit symbols. |
1611 | */ | |
6efd877d KR |
1612 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1613 | 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))); | |
1614 | ||
1615 | /* | |
3eb802b5 ILT |
1616 | * Emit strings. |
1617 | */ | |
6efd877d KR |
1618 | |
1619 | if (string_byte_count > 0) | |
1620 | { | |
1621 | obj_emit_strings (&next_object_file_charP); | |
1622 | } /* only if we have a string table */ | |
1623 | ||
45432836 | 1624 | #ifdef BFD_HEADERS |
6efd877d KR |
1625 | bfd_seek (stdoutput, 0, 0); |
1626 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1627 | #else |
6efd877d KR |
1628 | |
1629 | /* Write the data to the file */ | |
1630 | output_file_append (the_object_file, object_file_size, out_file_name); | |
3f81f3cf | 1631 | free (the_object_file); |
45432836 | 1632 | #endif |
6efd877d | 1633 | } /* non vms output */ |
3f81f3cf | 1634 | #else /* OBJ_VMS */ |
6efd877d | 1635 | /* |
3eb802b5 ILT |
1636 | * Now do the VMS-dependent part of writing the object file |
1637 | */ | |
8e86815b | 1638 | vms_write_object_file (H_GET_TEXT_SIZE (&headers), |
85825401 ILT |
1639 | H_GET_DATA_SIZE (&headers), |
1640 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1641 | text_frag_root, data_frag_root); |
3f81f3cf | 1642 | #endif /* OBJ_VMS */ |
43ca9aa6 | 1643 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1644 | |
4acf8c78 KR |
1645 | /* Resolve symbol values. This needs to be done before processing |
1646 | the relocations. */ | |
1647 | if (symbol_rootP) | |
1648 | { | |
1649 | symbolS *symp; | |
1650 | ||
1651 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1652 | if (!symp->sy_resolved) | |
1653 | resolve_symbol_value (symp); | |
1654 | } | |
1655 | ||
c151fd1e KR |
1656 | PROGRESS (1); |
1657 | ||
5d0cd0b8 ILT |
1658 | #ifdef tc_frob_file_before_adjust |
1659 | tc_frob_file_before_adjust (); | |
1660 | #endif | |
1661 | #ifdef obj_frob_file_before_adjust | |
1662 | obj_frob_file_before_adjust (); | |
1663 | #endif | |
1664 | ||
d5364748 KR |
1665 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1666 | ||
43ca9aa6 KR |
1667 | /* Set up symbol table, and write it out. */ |
1668 | if (symbol_rootP) | |
1669 | { | |
43ca9aa6 KR |
1670 | symbolS *symp; |
1671 | ||
1672 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1673 | { | |
262b22cd | 1674 | int punt = 0; |
c151fd1e KR |
1675 | const char *name; |
1676 | ||
1356d77d ILT |
1677 | if (symp->sy_mri_common) |
1678 | { | |
1679 | if (S_IS_EXTERNAL (symp)) | |
1680 | as_bad ("%s: global symbols not supported in common sections", | |
1681 | S_GET_NAME (symp)); | |
1682 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1683 | continue; | |
1684 | } | |
1685 | ||
c151fd1e KR |
1686 | name = S_GET_NAME (symp); |
1687 | if (name) | |
1688 | { | |
a2a5a4fa | 1689 | const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); |
c151fd1e KR |
1690 | /* They only differ if `name' is a fb or dollar local |
1691 | label name. */ | |
1692 | if (name2 != name && ! S_IS_DEFINED (symp)) | |
1693 | as_bad ("local label %s is not defined", name2); | |
1694 | } | |
262b22cd | 1695 | |
4acf8c78 KR |
1696 | /* Do it again, because adjust_reloc_syms might introduce |
1697 | more symbols. They'll probably only be section symbols, | |
1698 | but they'll still need to have the values computed. */ | |
5868b1fe ILT |
1699 | if (! symp->sy_resolved) |
1700 | { | |
5ac34ac3 | 1701 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1702 | { |
1703 | /* This is the normal case; skip the call. */ | |
1704 | S_SET_VALUE (symp, | |
1705 | (S_GET_VALUE (symp) | |
1706 | + symp->sy_frag->fr_address)); | |
1707 | symp->sy_resolved = 1; | |
1708 | } | |
1709 | else | |
1710 | resolve_symbol_value (symp); | |
1711 | } | |
1712 | ||
a043f579 ILT |
1713 | /* Skip symbols which were equated to undefined or common |
1714 | symbols. */ | |
1715 | if (symp->sy_value.X_op == O_symbol | |
1716 | && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp))) | |
1717 | { | |
1718 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1719 | continue; | |
1720 | } | |
1721 | ||
43ca9aa6 KR |
1722 | /* So far, common symbols have been treated like undefined symbols. |
1723 | Put them in the common section now. */ | |
1724 | if (S_IS_DEFINED (symp) == 0 | |
1725 | && S_GET_VALUE (symp) != 0) | |
d9d6f094 | 1726 | S_SET_SEGMENT (symp, bfd_com_section_ptr); |
43ca9aa6 | 1727 | #if 0 |
5868b1fe | 1728 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1729 | S_GET_NAME (symp), symp, |
1730 | S_GET_VALUE (symp), | |
d5364748 | 1731 | symp->bsym->flags, |
43ca9aa6 KR |
1732 | segment_name (symp->bsym->section)); |
1733 | #endif | |
335d35c8 | 1734 | |
80aab579 | 1735 | #ifdef obj_frob_symbol |
262b22cd | 1736 | obj_frob_symbol (symp, punt); |
43ca9aa6 KR |
1737 | #endif |
1738 | #ifdef tc_frob_symbol | |
262b22cd | 1739 | if (! punt || symp->sy_used_in_reloc) |
335d35c8 | 1740 | tc_frob_symbol (symp, punt); |
43ca9aa6 | 1741 | #endif |
80aab579 | 1742 | |
262b22cd ILT |
1743 | /* If we don't want to keep this symbol, splice it out of |
1744 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1745 | want section symbols. Otherwise, we skip local symbols | |
1746 | and symbols that the frob_symbol macros told us to punt, | |
1747 | but we keep such symbols if they are used in relocs. */ | |
1748 | if ((! EMIT_SECTION_SYMBOLS | |
1749 | && (symp->bsym->flags & BSF_SECTION_SYM) != 0) | |
1cf7548e KR |
1750 | /* Note that S_IS_EXTERN and S_IS_LOCAL are not always |
1751 | opposites. Sometimes the former checks flags and the | |
1752 | latter examines the name... */ | |
1753 | || (!S_IS_EXTERN (symp) | |
1754 | && (S_IS_LOCAL (symp) || punt) | |
262b22cd | 1755 | && ! symp->sy_used_in_reloc)) |
43ca9aa6 | 1756 | { |
1cf7548e KR |
1757 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); |
1758 | /* After symbol_remove, symbol_next(symp) still returns | |
1759 | the one that came after it in the chain. So we don't | |
1760 | need to do any extra cleanup work here. */ | |
262b22cd | 1761 | |
262b22cd | 1762 | continue; |
43ca9aa6 | 1763 | } |
85051959 | 1764 | |
80aab579 ILT |
1765 | /* Make sure we really got a value for the symbol. */ |
1766 | if (! symp->sy_resolved) | |
1767 | { | |
1768 | as_bad ("can't resolve value for symbol \"%s\"", | |
1769 | S_GET_NAME (symp)); | |
1770 | symp->sy_resolved = 1; | |
1771 | } | |
1772 | ||
85051959 ILT |
1773 | /* Set the value into the BFD symbol. Up til now the value |
1774 | has only been kept in the gas symbolS struct. */ | |
1775 | symp->bsym->value = S_GET_VALUE (symp); | |
43ca9aa6 KR |
1776 | } |
1777 | } | |
1778 | ||
c151fd1e KR |
1779 | PROGRESS (1); |
1780 | ||
def66e24 DM |
1781 | /* Now do any format-specific adjustments to the symbol table, such |
1782 | as adding file symbols. */ | |
a043f579 ILT |
1783 | #ifdef tc_adjust_symtab |
1784 | tc_adjust_symtab (); | |
1785 | #endif | |
def66e24 DM |
1786 | #ifdef obj_adjust_symtab |
1787 | obj_adjust_symtab (); | |
1788 | #endif | |
1789 | ||
1790 | /* Now that all the sizes are known, and contents correct, we can | |
1791 | start writing to the file. */ | |
1792 | set_symtab (); | |
1793 | ||
1cf7548e KR |
1794 | /* If *_frob_file changes the symbol value at this point, it is |
1795 | responsible for moving the changed value into symp->bsym->value | |
1796 | as well. Hopefully all symbol value changing can be done in | |
1797 | *_frob_symbol. */ | |
c79e67a3 KR |
1798 | #ifdef tc_frob_file |
1799 | tc_frob_file (); | |
1800 | #endif | |
f2f7d044 ILT |
1801 | #ifdef obj_frob_file |
1802 | obj_frob_file (); | |
1803 | #endif | |
1804 | ||
8d6c34a1 KR |
1805 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1806 | ||
5d0cd0b8 ILT |
1807 | #ifdef tc_frob_file_after_relocs |
1808 | tc_frob_file_after_relocs (); | |
1809 | #endif | |
1810 | #ifdef obj_frob_file_after_relocs | |
1811 | obj_frob_file_after_relocs (); | |
1812 | #endif | |
1813 | ||
43ca9aa6 | 1814 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1815 | #endif /* BFD_ASSEMBLER */ |
1816 | } | |
d5364748 | 1817 | #endif /* ! BFD */ |
fecd2382 RP |
1818 | |
1819 | /* | |
1820 | * relax_segment() | |
1821 | * | |
1822 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1823 | * values. | |
1824 | * | |
1825 | * Relax the frags. | |
1826 | * | |
1827 | * After this, all frags in this segment have addresses that are correct | |
1828 | * within the segment. Since segments live in different file addresses, | |
1829 | * these frag addresses may not be the same as final object-file addresses. | |
1830 | */ | |
45432836 | 1831 | |
a58374d7 | 1832 | #ifndef md_relax_frag |
793f9558 | 1833 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 | 1834 | |
d5364748 | 1835 | /* Subroutines of relax_segment. */ |
5d0cd0b8 | 1836 | static int |
43ca9aa6 KR |
1837 | is_dnrange (f1, f2) |
1838 | struct frag *f1; | |
1839 | struct frag *f2; | |
1840 | { | |
1841 | for (; f1; f1 = f1->fr_next) | |
1842 | if (f1->fr_next == f2) | |
1843 | return 1; | |
1844 | return 0; | |
1845 | } | |
1846 | ||
793f9558 | 1847 | #endif /* defined (TC_GENERIC_RELAX_TABLE) */ |
a58374d7 ILT |
1848 | #endif /* ! defined (md_relax_frag) */ |
1849 | ||
43ca9aa6 | 1850 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1851 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1852 | static relax_addressT |
1853 | relax_align (address, alignment) | |
1854 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1855 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1856 | { |
1857 | relax_addressT mask; | |
1858 | relax_addressT new_address; | |
1859 | ||
1860 | mask = ~((~0) << alignment); | |
1861 | new_address = (address + mask) & (~mask); | |
d4083e29 | 1862 | #ifdef LINKER_RELAXING_SHRINKS_ONLY |
43ca9aa6 KR |
1863 | if (linkrelax) |
1864 | /* We must provide lots of padding, so the linker can discard it | |
1865 | when needed. The linker will not add extra space, ever. */ | |
1866 | new_address += (1 << alignment); | |
d4083e29 | 1867 | #endif |
43ca9aa6 KR |
1868 | return (new_address - address); |
1869 | } | |
45432836 | 1870 | |
5d0cd0b8 | 1871 | void |
6efd877d KR |
1872 | relax_segment (segment_frag_root, segment) |
1873 | struct frag *segment_frag_root; | |
43ca9aa6 | 1874 | segT segment; |
fecd2382 | 1875 | { |
6efd877d KR |
1876 | register struct frag *fragP; |
1877 | register relax_addressT address; | |
43ca9aa6 | 1878 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1879 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1880 | #endif |
6efd877d KR |
1881 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1882 | subseg_change (segment, 0); | |
1883 | ||
7f2cb270 KR |
1884 | /* For each frag in segment: count and store (a 1st guess of) |
1885 | fr_address. */ | |
6efd877d KR |
1886 | address = 0; |
1887 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1888 | { | |
1889 | fragP->fr_address = address; | |
1890 | address += fragP->fr_fix; | |
1891 | ||
1892 | switch (fragP->fr_type) | |
1893 | { | |
1894 | case rs_fill: | |
1895 | address += fragP->fr_offset * fragP->fr_var; | |
1896 | break; | |
1897 | ||
1898 | case rs_align: | |
cd3b81bd | 1899 | case rs_align_code: |
98c6bbbe KR |
1900 | { |
1901 | int offset = relax_align (address, (int) fragP->fr_offset); | |
1902 | if (offset % fragP->fr_var != 0) | |
1903 | { | |
262b22cd ILT |
1904 | as_bad ("alignment padding (%d bytes) not a multiple of %ld", |
1905 | offset, (long) fragP->fr_var); | |
98c6bbbe KR |
1906 | offset -= (offset % fragP->fr_var); |
1907 | } | |
1908 | address += offset; | |
1909 | } | |
6efd877d KR |
1910 | break; |
1911 | ||
1912 | case rs_org: | |
cd3b81bd | 1913 | case rs_space: |
7f2cb270 | 1914 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1915 | break; |
1916 | ||
1917 | case rs_machine_dependent: | |
1918 | address += md_estimate_size_before_relax (fragP, segment); | |
1919 | break; | |
1920 | ||
fecd2382 | 1921 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1922 | /* Broken words don't concern us yet */ |
1923 | case rs_broken_word: | |
1924 | break; | |
fecd2382 | 1925 | #endif |
6efd877d KR |
1926 | |
1927 | default: | |
1928 | BAD_CASE (fragP->fr_type); | |
1929 | break; | |
1930 | } /* switch(fr_type) */ | |
1931 | } /* for each frag in the segment */ | |
1932 | ||
7f2cb270 | 1933 | /* Do relax(). */ |
6efd877d | 1934 | { |
7f2cb270 | 1935 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1936 | /* Cumulative number of addresses we have */ |
1937 | /* relaxed this pass. */ | |
1938 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1939 | long stretched; /* Have we stretched on this pass? */ |
1940 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1941 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1942 | we could be scrod. */ | |
6efd877d KR |
1943 | |
1944 | do | |
1945 | { | |
1946 | stretch = stretched = 0; | |
1947 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1948 | { | |
7f2cb270 KR |
1949 | long growth = 0; |
1950 | unsigned long was_address; | |
1951 | long offset; | |
1952 | symbolS *symbolP; | |
1953 | long target; | |
1954 | long after; | |
6efd877d KR |
1955 | |
1956 | was_address = fragP->fr_address; | |
1957 | address = fragP->fr_address += stretch; | |
1958 | symbolP = fragP->fr_symbol; | |
1959 | offset = fragP->fr_offset; | |
6efd877d KR |
1960 | |
1961 | switch (fragP->fr_type) | |
1962 | { | |
1963 | case rs_fill: /* .fill never relaxes. */ | |
1964 | growth = 0; | |
1965 | break; | |
1966 | ||
fecd2382 | 1967 | #ifndef WORKING_DOT_WORD |
6efd877d | 1968 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1969 | for it I do not want to write it. I do not want to have |
1970 | anything to do with it. This is not the proper way to | |
1971 | implement this misfeature. */ | |
6efd877d KR |
1972 | case rs_broken_word: |
1973 | { | |
1974 | struct broken_word *lie; | |
1975 | struct broken_word *untruth; | |
6efd877d KR |
1976 | |
1977 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
1978 | in the symbol slot). Still, this whole chunk of |
1979 | code is ugly, and I don't feel like doing anything | |
1980 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
1981 | growth = 0; |
1982 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
1983 | lie && lie->dispfrag == fragP; | |
1984 | lie = lie->next_broken_word) | |
1985 | { | |
1986 | ||
1987 | if (lie->added) | |
1988 | continue; | |
1989 | ||
7f2cb270 KR |
1990 | offset = (lie->add->sy_frag->fr_address |
1991 | + S_GET_VALUE (lie->add) | |
1992 | + lie->addnum | |
1993 | - (lie->sub->sy_frag->fr_address | |
1994 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
1995 | if (offset <= -32768 || offset >= 32767) |
1996 | { | |
def66e24 | 1997 | if (flag_warn_displacement) |
d5364748 KR |
1998 | { |
1999 | char buf[50]; | |
80aab579 | 2000 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
2001 | as_warn (".word %s-%s+%s didn't fit", |
2002 | S_GET_NAME (lie->add), | |
2003 | S_GET_NAME (lie->sub), | |
2004 | buf); | |
2005 | } | |
6efd877d KR |
2006 | lie->added = 1; |
2007 | if (fragP->fr_subtype == 0) | |
2008 | { | |
2009 | fragP->fr_subtype++; | |
2010 | growth += md_short_jump_size; | |
2011 | } | |
7f2cb270 KR |
2012 | for (untruth = lie->next_broken_word; |
2013 | untruth && untruth->dispfrag == lie->dispfrag; | |
2014 | untruth = untruth->next_broken_word) | |
6efd877d KR |
2015 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
2016 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
2017 | { | |
2018 | untruth->added = 2; | |
2019 | untruth->use_jump = lie; | |
2020 | } | |
2021 | growth += md_long_jump_size; | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | break; | |
2026 | } /* case rs_broken_word */ | |
fecd2382 | 2027 | #endif |
6efd877d | 2028 | case rs_align: |
cd3b81bd | 2029 | case rs_align_code: |
43ca9aa6 KR |
2030 | growth = (relax_align ((relax_addressT) (address |
2031 | + fragP->fr_fix), | |
d5364748 | 2032 | (int) offset) |
43ca9aa6 KR |
2033 | - relax_align ((relax_addressT) (was_address |
2034 | + fragP->fr_fix), | |
d5364748 | 2035 | (int) offset)); |
6efd877d KR |
2036 | break; |
2037 | ||
2038 | case rs_org: | |
2039 | target = offset; | |
2040 | ||
2041 | if (symbolP) | |
2042 | { | |
43ca9aa6 KR |
2043 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
2044 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2045 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2046 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
2047 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 2048 | know (symbolP->sy_frag); |
43ca9aa6 KR |
2049 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
2050 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 2051 | #endif |
6efd877d KR |
2052 | target += S_GET_VALUE (symbolP) |
2053 | + symbolP->sy_frag->fr_address; | |
2054 | } /* if we have a symbol */ | |
2055 | ||
2056 | know (fragP->fr_next); | |
2057 | after = fragP->fr_next->fr_address; | |
c151fd1e KR |
2058 | growth = target - after; |
2059 | if (growth < 0) | |
2060 | { | |
2061 | /* Growth may be negative, but variable part of frag | |
2062 | cannot have fewer than 0 chars. That is, we can't | |
2063 | .org backwards. */ | |
2064 | as_bad ("attempt to .org backwards ignored"); | |
2065 | growth = 0; | |
2066 | } | |
6efd877d KR |
2067 | |
2068 | growth -= stretch; /* This is an absolute growth factor */ | |
2069 | break; | |
2070 | ||
cd3b81bd KR |
2071 | case rs_space: |
2072 | if (symbolP) | |
2073 | { | |
2074 | growth = S_GET_VALUE (symbolP); | |
2075 | if (symbolP->sy_frag != &zero_address_frag) | |
2076 | as_bad (".space specifies non-absolute value"); | |
2077 | fragP->fr_symbol = 0; | |
2078 | if (growth < 0) | |
2079 | { | |
2080 | as_warn (".space or .fill with negative value, ignored"); | |
2081 | growth = 0; | |
2082 | } | |
2083 | } | |
2084 | else | |
2085 | growth = 0; | |
2086 | break; | |
2087 | ||
6efd877d | 2088 | case rs_machine_dependent: |
a58374d7 ILT |
2089 | #ifdef md_relax_frag |
2090 | growth = md_relax_frag (fragP, stretch); | |
2091 | #else | |
c151fd1e | 2092 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 ILT |
2093 | /* The default way to relax a frag is to look through |
2094 | md_relax_table. */ | |
6efd877d | 2095 | { |
7f2cb270 KR |
2096 | const relax_typeS *this_type; |
2097 | const relax_typeS *start_type; | |
2098 | relax_substateT next_state; | |
2099 | relax_substateT this_state; | |
80aab579 | 2100 | long aim; |
c151fd1e | 2101 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; |
6efd877d | 2102 | |
7f2cb270 | 2103 | this_state = fragP->fr_subtype; |
c151fd1e | 2104 | start_type = this_type = table + this_state; |
6efd877d KR |
2105 | target = offset; |
2106 | ||
2107 | if (symbolP) | |
2108 | { | |
80aab579 | 2109 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
2110 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
2111 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2112 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2113 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
2114 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 2115 | #endif |
6efd877d | 2116 | know (symbolP->sy_frag); |
80aab579 | 2117 | #endif |
43ca9aa6 KR |
2118 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
2119 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
2120 | target += |
2121 | S_GET_VALUE (symbolP) | |
2122 | + symbolP->sy_frag->fr_address; | |
2123 | ||
2124 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
2125 | assume it will move by STRETCH just as we did. |
2126 | If this is not so, it will be because some frag | |
d5364748 KR |
2127 | between grows, and that will force another pass. |
2128 | ||
2129 | Beware zero-length frags. | |
2130 | ||
2131 | There should be a faster way to do this. */ | |
6efd877d KR |
2132 | |
2133 | if (symbolP->sy_frag->fr_address >= was_address | |
2134 | && is_dnrange (fragP, symbolP->sy_frag)) | |
2135 | { | |
2136 | target += stretch; | |
7f2cb270 | 2137 | } |
d5364748 | 2138 | } |
6efd877d KR |
2139 | |
2140 | aim = target - address - fragP->fr_fix; | |
d9d6f094 KR |
2141 | #ifdef TC_PCREL_ADJUST |
2142 | /* Currently only the ns32k family needs this */ | |
2143 | aim += TC_PCREL_ADJUST(fragP); | |
2144 | #else | |
2145 | /* This machine doesn't want to use pcrel_adjust. | |
2146 | In that case, pcrel_adjust should be zero. */ | |
2147 | assert (fragP->fr_pcrel_adjust == 0); | |
d5364748 | 2148 | #endif |
6efd877d KR |
2149 | |
2150 | if (aim < 0) | |
2151 | { | |
2152 | /* Look backwards. */ | |
2153 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2154 | if (aim >= this_type->rlx_backward) |
2155 | next_state = 0; | |
2156 | else | |
2157 | { | |
2158 | /* Grow to next state. */ | |
2159 | this_state = next_state; | |
c151fd1e | 2160 | this_type = table + this_state; |
7f2cb270 KR |
2161 | next_state = this_type->rlx_more; |
2162 | } | |
6efd877d KR |
2163 | } |
2164 | else | |
2165 | { | |
a39116f1 | 2166 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 2167 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 2168 | #endif |
6efd877d KR |
2169 | /* Look forwards. */ |
2170 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2171 | if (aim <= this_type->rlx_forward) |
2172 | next_state = 0; | |
2173 | else | |
2174 | { | |
2175 | /* Grow to next state. */ | |
2176 | this_state = next_state; | |
c151fd1e | 2177 | this_type = table + this_state; |
7f2cb270 KR |
2178 | next_state = this_type->rlx_more; |
2179 | } | |
6efd877d KR |
2180 | } |
2181 | ||
7f2cb270 KR |
2182 | growth = this_type->rlx_length - start_type->rlx_length; |
2183 | if (growth != 0) | |
6efd877d | 2184 | fragP->fr_subtype = this_state; |
7f2cb270 | 2185 | } |
c151fd1e | 2186 | #endif /* TC_GENERIC_RELAX_TABLE */ |
a58374d7 | 2187 | #endif |
7f2cb270 | 2188 | break; |
6efd877d KR |
2189 | |
2190 | default: | |
2191 | BAD_CASE (fragP->fr_type); | |
2192 | break; | |
2193 | } | |
2194 | if (growth) | |
2195 | { | |
2196 | stretch += growth; | |
2197 | stretched++; | |
2198 | } | |
2199 | } /* For each frag in the segment. */ | |
2200 | } | |
2201 | while (stretched); /* Until nothing further to relax. */ | |
2202 | } /* do_relax */ | |
2203 | ||
2204 | /* | |
7f2cb270 KR |
2205 | * We now have valid fr_address'es for each frag. |
2206 | */ | |
6efd877d KR |
2207 | |
2208 | /* | |
7f2cb270 KR |
2209 | * All fr_address's are correct, relative to their own segment. |
2210 | * We have made all the fixS we will ever make. | |
2211 | */ | |
6efd877d | 2212 | } /* relax_segment() */ |
fecd2382 | 2213 | |
3f81f3cf | 2214 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
80aab579 | 2215 | |
d9d6f094 KR |
2216 | #ifndef TC_RELOC_RTSYM_LOC_FIXUP |
2217 | #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1) | |
2218 | #endif | |
2219 | ||
fecd2382 | 2220 | /* fixup_segment() |
6efd877d | 2221 | |
fecd2382 RP |
2222 | Go through all the fixS's in a segment and see which ones can be |
2223 | handled now. (These consist of fixS where we have since discovered | |
2224 | the value of a symbol, or the address of the frag involved.) | |
2225 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 2226 | |
fecd2382 RP |
2227 | Result is a count of how many relocation structs will be needed to |
2228 | handle the remaining fixS's that we couldn't completely handle here. | |
2229 | These will be output later by emit_relocations(). */ | |
2230 | ||
09952cd9 | 2231 | static long |
6efd877d | 2232 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 2233 | register fixS *fixP; |
6efd877d | 2234 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 2235 | { |
f5c32424 KR |
2236 | long seg_reloc_count = 0; |
2237 | symbolS *add_symbolP; | |
2238 | symbolS *sub_symbolP; | |
d5364748 | 2239 | valueT add_number; |
f5c32424 KR |
2240 | int size; |
2241 | char *place; | |
2242 | long where; | |
a55774a1 | 2243 | int pcrel, plt; |
f5c32424 KR |
2244 | fragS *fragP; |
2245 | segT add_symbol_segment = absolute_section; | |
5d0cd0b8 | 2246 | |
f5c32424 KR |
2247 | /* If the linker is doing the relaxing, we must not do any fixups. |
2248 | ||
2249 | Well, strictly speaking that's not true -- we could do any that are | |
2250 | PC-relative and don't cross regions that could change size. And for the | |
2251 | i960 (the only machine for which we've got a relaxing linker right now), | |
2252 | we might be able to turn callx/callj into bal anyways in cases where we | |
2253 | know the maximum displacement. */ | |
6efd877d | 2254 | if (linkrelax) |
f5c32424 KR |
2255 | { |
2256 | for (; fixP; fixP = fixP->fx_next) | |
2257 | seg_reloc_count++; | |
2258 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2259 | return seg_reloc_count; | |
2260 | } | |
6efd877d | 2261 | |
f5c32424 KR |
2262 | for (; fixP; fixP = fixP->fx_next) |
2263 | { | |
a55774a1 KR |
2264 | #ifdef DEBUG5 |
2265 | fprintf (stderr, "\nprocessing fixup:\n"); | |
2266 | print_fixup (fixP); | |
2267 | #endif | |
2268 | ||
f5c32424 KR |
2269 | fragP = fixP->fx_frag; |
2270 | know (fragP); | |
2271 | where = fixP->fx_where; | |
2272 | place = fragP->fr_literal + where; | |
2273 | size = fixP->fx_size; | |
2274 | add_symbolP = fixP->fx_addsy; | |
2275 | #ifdef TC_VALIDATE_FIX | |
2276 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 2277 | #endif |
f5c32424 KR |
2278 | sub_symbolP = fixP->fx_subsy; |
2279 | add_number = fixP->fx_offset; | |
2280 | pcrel = fixP->fx_pcrel; | |
a55774a1 KR |
2281 | plt = fixP->fx_plt; |
2282 | ||
e120d9fb ILT |
2283 | if (add_symbolP != NULL |
2284 | && add_symbolP->sy_mri_common) | |
1356d77d ILT |
2285 | { |
2286 | know (add_symbolP->sy_value.X_op == O_symbol); | |
2287 | add_number += S_GET_VALUE (add_symbolP); | |
2288 | fixP->fx_offset = add_number; | |
2289 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
2290 | } | |
2291 | ||
f5c32424 KR |
2292 | if (add_symbolP) |
2293 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
5d0cd0b8 | 2294 | |
f5c32424 KR |
2295 | if (sub_symbolP) |
2296 | { | |
f7da4a99 | 2297 | resolve_symbol_value (sub_symbolP); |
96fe71e1 | 2298 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) |
f5c32424 | 2299 | { |
96fe71e1 MM |
2300 | if (add_symbolP != NULL) |
2301 | { | |
2302 | add_number += S_GET_VALUE (add_symbolP); | |
2303 | add_symbolP = NULL; | |
2304 | fixP->fx_addsy = NULL; | |
2305 | } | |
2306 | ||
2307 | /* It's just -sym */ | |
f5c32424 | 2308 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) |
96fe71e1 MM |
2309 | { |
2310 | add_number -= S_GET_VALUE (sub_symbolP); | |
2311 | fixP->fx_subsy = NULL; | |
2312 | } | |
f5c32424 KR |
2313 | else if (pcrel |
2314 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
2315 | { | |
2316 | /* Should try converting to a constant. */ | |
2317 | goto bad_sub_reloc; | |
2318 | } | |
2319 | else | |
2320 | bad_sub_reloc: | |
741f4d66 KR |
2321 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2322 | "Negative of non-absolute symbol %s", | |
2323 | S_GET_NAME (sub_symbolP)); | |
f5c32424 | 2324 | } |
96fe71e1 MM |
2325 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment |
2326 | && SEG_NORMAL (add_symbol_segment)) | |
f5c32424 KR |
2327 | { |
2328 | /* Difference of 2 symbols from same segment. | |
2329 | Can't make difference of 2 undefineds: 'value' means | |
2330 | something different for N_UNDF. */ | |
fecd2382 | 2331 | #ifdef TC_I960 |
f5c32424 KR |
2332 | /* Makes no sense to use the difference of 2 arbitrary symbols |
2333 | as the target of a call instruction. */ | |
2334 | if (fixP->fx_tcbit) | |
741f4d66 KR |
2335 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2336 | "callj to difference of 2 symbols"); | |
6efd877d | 2337 | #endif /* TC_I960 */ |
f5c32424 KR |
2338 | add_number += S_GET_VALUE (add_symbolP) - |
2339 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 2340 | |
f5c32424 | 2341 | add_symbolP = NULL; |
c151fd1e | 2342 | pcrel = 0; /* No further pcrel processing. */ |
335d35c8 | 2343 | |
f5c32424 KR |
2344 | /* Let the target machine make the final determination |
2345 | as to whether or not a relocation will be needed to | |
2346 | handle this fixup. */ | |
96fe71e1 | 2347 | if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) |
98c6bbbe | 2348 | { |
c151fd1e | 2349 | fixP->fx_pcrel = 0; |
98c6bbbe | 2350 | fixP->fx_addsy = NULL; |
96fe71e1 | 2351 | fixP->fx_subsy = NULL; |
98c6bbbe | 2352 | } |
f5c32424 KR |
2353 | } |
2354 | else | |
2355 | { | |
2356 | /* Different segments in subtraction. */ | |
2357 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
2358 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
2359 | ||
2360 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
2361 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 2362 | |
80aab579 | 2363 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
2364 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
2365 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
2366 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
2367 | pc-relative mode. */ | |
2368 | && pcrel | |
0f894895 | 2369 | #endif |
f5c32424 KR |
2370 | ) |
2371 | { | |
2372 | /* Make it pc-relative. */ | |
96fe71e1 | 2373 | add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) |
f5c32424 KR |
2374 | - S_GET_VALUE (sub_symbolP)); |
2375 | pcrel = 1; | |
2376 | fixP->fx_pcrel = 1; | |
2377 | sub_symbolP = 0; | |
2378 | fixP->fx_subsy = 0; | |
2379 | } | |
98c6bbbe | 2380 | #endif |
d4083e29 KR |
2381 | #ifdef UNDEFINED_DIFFERENCE_OK |
2382 | /* The PA needs this for PIC code generation. We basically | |
2383 | don't want to do anything if we have the difference of two | |
2384 | symbols at this point. */ | |
2385 | else if (1) | |
2386 | { | |
2387 | /* Leave it alone. */ | |
2388 | } | |
2389 | #endif | |
98c6bbbe KR |
2390 | #ifdef BFD_ASSEMBLER |
2391 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
2392 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
2393 | { | |
2394 | /* Leave it alone. */ | |
2395 | } | |
80aab579 | 2396 | #endif |
f5c32424 KR |
2397 | else |
2398 | { | |
2399 | char buf[50]; | |
2400 | sprint_value (buf, fragP->fr_address + where); | |
741f4d66 KR |
2401 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2402 | "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
2403 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
2404 | S_GET_NAME (sub_symbolP), buf); | |
f5c32424 KR |
2405 | } |
2406 | } | |
2407 | } | |
6efd877d | 2408 | |
f5c32424 KR |
2409 | if (add_symbolP) |
2410 | { | |
a55774a1 | 2411 | if (add_symbol_segment == this_segment_type && pcrel && !plt |
5767cfb7 | 2412 | && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) |
f5c32424 KR |
2413 | { |
2414 | /* | |
2415 | * This fixup was made when the symbol's segment was | |
2416 | * SEG_UNKNOWN, but it is now in the local segment. | |
2417 | * So we know how to do the address without relocation. | |
2418 | */ | |
fecd2382 | 2419 | #ifdef TC_I960 |
f5c32424 KR |
2420 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
2421 | 'bal', in which cases it modifies *fixP as appropriate. | |
2422 | In the case of a 'calls', no further work is required, | |
2423 | and *fixP has been set up to make the rest of the code | |
2424 | below a no-op. */ | |
2425 | reloc_callj (fixP); | |
fecd2382 | 2426 | #endif /* TC_I960 */ |
6efd877d | 2427 | |
f5c32424 | 2428 | add_number += S_GET_VALUE (add_symbolP); |
96fe71e1 | 2429 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 | 2430 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ |
5d0cd0b8 | 2431 | |
f5c32424 KR |
2432 | /* Let the target machine make the final determination |
2433 | as to whether or not a relocation will be needed to | |
2434 | handle this fixup. */ | |
2435 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
2436 | { |
2437 | fixP->fx_pcrel = 0; | |
2438 | fixP->fx_addsy = NULL; | |
2439 | } | |
f5c32424 KR |
2440 | } |
2441 | else | |
2442 | { | |
00a69b89 ILT |
2443 | if (add_symbol_segment == absolute_section |
2444 | && ! pcrel) | |
f5c32424 | 2445 | { |
fecd2382 | 2446 | #ifdef TC_I960 |
f5c32424 KR |
2447 | /* See comment about reloc_callj() above. */ |
2448 | reloc_callj (fixP); | |
fecd2382 | 2449 | #endif /* TC_I960 */ |
f5c32424 KR |
2450 | add_number += S_GET_VALUE (add_symbolP); |
2451 | ||
2452 | /* Let the target machine make the final determination | |
2453 | as to whether or not a relocation will be needed to | |
2454 | handle this fixup. */ | |
5d0cd0b8 | 2455 | |
f00f5ecd | 2456 | if (!TC_FORCE_RELOCATION (fixP)) |
e67a0640 KR |
2457 | { |
2458 | fixP->fx_addsy = NULL; | |
2459 | add_symbolP = NULL; | |
2460 | } | |
f5c32424 KR |
2461 | } |
2462 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 2463 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2464 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 2465 | #endif |
f5c32424 KR |
2466 | ) |
2467 | { | |
fecd2382 | 2468 | #ifdef TC_I960 |
f5c32424 KR |
2469 | if ((int) fixP->fx_bit_fixP == 13) |
2470 | { | |
2471 | /* This is a COBR instruction. They have only a | |
2472 | * 13-bit displacement and are only to be used | |
2473 | * for local branches: flag as error, don't generate | |
2474 | * relocation. | |
2475 | */ | |
741f4d66 KR |
2476 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2477 | "can't use COBR format with external label"); | |
98c6bbbe KR |
2478 | fixP->fx_addsy = NULL; |
2479 | fixP->fx_done = 1; | |
f5c32424 KR |
2480 | continue; |
2481 | } /* COBR */ | |
fecd2382 | 2482 | #endif /* TC_I960 */ |
5d0cd0b8 | 2483 | |
fecd2382 | 2484 | #ifdef OBJ_COFF |
c593cf41 | 2485 | #ifdef TE_I386AIX |
f5c32424 KR |
2486 | if (S_IS_COMMON (add_symbolP)) |
2487 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2488 | #endif /* TE_I386AIX */ |
fecd2382 | 2489 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2490 | ++seg_reloc_count; |
2491 | } | |
2492 | else | |
2493 | { | |
2494 | seg_reloc_count++; | |
00a69b89 ILT |
2495 | /* start-sanitize-v850 */ |
2496 | #if !(defined (TC_V850) && defined (OBJ_ELF)) | |
2497 | /* end-sanitize-v850 */ | |
a043f579 | 2498 | #if !(defined (TC_M68K) && defined (OBJ_ELF)) |
a55774a1 | 2499 | #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) |
f5c32424 | 2500 | add_number += S_GET_VALUE (add_symbolP); |
00a69b89 ILT |
2501 | /* start-sanitize-v850 */ |
2502 | #endif | |
2503 | /* end-sanitize-v850 */ | |
a043f579 | 2504 | #endif |
a55774a1 | 2505 | #endif |
f5c32424 KR |
2506 | } |
2507 | } | |
2508 | } | |
6efd877d | 2509 | |
f5c32424 KR |
2510 | if (pcrel) |
2511 | { | |
96fe71e1 | 2512 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 KR |
2513 | if (add_symbolP == 0) |
2514 | { | |
1cf7548e | 2515 | #ifndef BFD_ASSEMBLER |
f5c32424 | 2516 | fixP->fx_addsy = &abs_symbol; |
1cf7548e KR |
2517 | #else |
2518 | fixP->fx_addsy = section_symbol (absolute_section); | |
2519 | #endif | |
2520 | fixP->fx_addsy->sy_used_in_reloc = 1; | |
f5c32424 | 2521 | ++seg_reloc_count; |
98c6bbbe KR |
2522 | } |
2523 | } | |
6efd877d | 2524 | |
c7d7eed0 | 2525 | if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) |
f5c32424 KR |
2526 | { |
2527 | valueT mask = 0; | |
df44a852 | 2528 | if (size < sizeof (mask)) |
f5c32424 | 2529 | { |
df44a852 KR |
2530 | /* set all bits to one */ |
2531 | mask--; | |
2532 | /* Technically, combining these produces an undefined result | |
2533 | if size is sizeof (valueT), though I think these two | |
2534 | half-way operations should both be defined. And the | |
2535 | compiler should be able to combine them if it's valid on | |
2536 | the host architecture. */ | |
2537 | mask <<= size * 4; | |
2538 | mask <<= size * 4; | |
2539 | if ((add_number & mask) != 0 | |
2540 | && (add_number & mask) != mask) | |
2541 | { | |
2542 | char buf[50], buf2[50]; | |
2543 | sprint_value (buf, fragP->fr_address + where); | |
2544 | if (add_number > 1000) | |
2545 | sprint_value (buf2, add_number); | |
2546 | else | |
2547 | sprintf (buf2, "%ld", (long) add_number); | |
2548 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2549 | "Value of %s too large for field of %d bytes at %s", | |
2550 | buf2, size, buf); | |
2551 | } /* generic error checking */ | |
2552 | } | |
f5c32424 KR |
2553 | #ifdef WARN_SIGNED_OVERFLOW_WORD |
2554 | /* Warn if a .word value is too large when treated as a signed | |
2555 | number. We already know it is not too negative. This is to | |
2556 | catch over-large switches generated by gcc on the 68k. */ | |
def66e24 | 2557 | if (!flag_signed_overflow_ok |
f5c32424 KR |
2558 | && size == 2 |
2559 | && add_number > 0x7fff) | |
2560 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2561 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2562 | (long) add_number, | |
2563 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2564 | #endif |
f5c32424 | 2565 | } /* not a bit fix */ |
6efd877d | 2566 | |
98c6bbbe KR |
2567 | if (!fixP->fx_done) |
2568 | { | |
3f81f3cf MM |
2569 | #ifdef MD_APPLY_FIX3 |
2570 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
2571 | #else | |
43ca9aa6 | 2572 | #ifdef BFD_ASSEMBLER |
98c6bbbe | 2573 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2574 | #else |
98c6bbbe KR |
2575 | md_apply_fix (fixP, add_number); |
2576 | #endif | |
3f81f3cf | 2577 | #endif |
98c6bbbe KR |
2578 | |
2579 | #ifndef TC_HANDLES_FX_DONE | |
2580 | /* If the tc-* files haven't been converted, assume it's handling | |
2581 | it the old way, where a null fx_addsy means that the fix has | |
2582 | been applied completely, and no further work is needed. */ | |
2583 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2584 | fixP->fx_done = 1; | |
43ca9aa6 | 2585 | #endif |
98c6bbbe KR |
2586 | } |
2587 | #ifdef TC_VALIDATE_FIX | |
a55774a1 KR |
2588 | skip: ; |
2589 | #endif | |
2590 | #ifdef DEBUG5 | |
2591 | fprintf (stderr, "result:\n"); | |
2592 | print_fixup (fixP); | |
98c6bbbe | 2593 | #endif |
f5c32424 | 2594 | } /* For each fixS in this segment. */ |
6efd877d | 2595 | |
f5c32424 KR |
2596 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2597 | return seg_reloc_count; | |
2598 | } | |
6efd877d | 2599 | |
3f81f3cf | 2600 | #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */ |
6efd877d | 2601 | |
f5c32424 KR |
2602 | void |
2603 | number_to_chars_bigendian (buf, val, n) | |
2604 | char *buf; | |
2605 | valueT val; | |
2606 | int n; | |
2607 | { | |
2608 | if (n > sizeof (val)|| n <= 0) | |
2609 | abort (); | |
2610 | while (n--) | |
2611 | { | |
2612 | buf[n] = val & 0xff; | |
2613 | val >>= 8; | |
2614 | } | |
d5364748 | 2615 | } |
fecd2382 | 2616 | |
f5c32424 KR |
2617 | void |
2618 | number_to_chars_littleendian (buf, val, n) | |
2619 | char *buf; | |
2620 | valueT val; | |
2621 | int n; | |
2622 | { | |
2623 | if (n > sizeof (val) || n <= 0) | |
2624 | abort (); | |
2625 | while (n--) | |
2626 | { | |
2627 | *buf++ = val & 0xff; | |
2628 | val >>= 8; | |
2629 | } | |
2630 | } | |
80aab579 | 2631 | |
a043f579 ILT |
2632 | void |
2633 | write_print_statistics (file) | |
2634 | FILE *file; | |
2635 | { | |
2636 | fprintf (stderr, "fixups: %d\n", n_fixups); | |
2637 | } | |
2638 | ||
4acf8c78 KR |
2639 | /* for debugging */ |
2640 | extern int indent_level; | |
b04bc423 | 2641 | extern void print_symbol_value_1 (); |
4acf8c78 KR |
2642 | |
2643 | void | |
2644 | print_fixup (fixp) | |
2645 | fixS *fixp; | |
2646 | { | |
2647 | indent_level = 1; | |
a55774a1 | 2648 | fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line); |
4acf8c78 KR |
2649 | if (fixp->fx_pcrel) |
2650 | fprintf (stderr, " pcrel"); | |
2651 | if (fixp->fx_pcrel_adjust) | |
2652 | fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust); | |
2653 | if (fixp->fx_im_disp) | |
2654 | { | |
2655 | #ifdef TC_NS32K | |
2656 | fprintf (stderr, " im_disp=%d", fixp->fx_im_disp); | |
2657 | #else | |
2658 | fprintf (stderr, " im_disp"); | |
2659 | #endif | |
2660 | } | |
2661 | if (fixp->fx_tcbit) | |
2662 | fprintf (stderr, " tcbit"); | |
2663 | if (fixp->fx_done) | |
2664 | fprintf (stderr, " done"); | |
a55774a1 KR |
2665 | fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx", |
2666 | fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where, | |
2667 | (long) fixp->fx_offset, (long) fixp->fx_addnumber); | |
9dc6c00f KR |
2668 | #ifdef BFD_ASSEMBLER |
2669 | fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type), | |
2670 | fixp->fx_r_type); | |
2671 | #else | |
a55774a1 | 2672 | #ifdef NEED_FX_R_TYPE |
9dc6c00f | 2673 | fprintf (stderr, " r_type=%d", fixp->fx_r_type); |
a55774a1 | 2674 | #endif |
9dc6c00f KR |
2675 | #endif |
2676 | if (fixp->fx_addsy) | |
2677 | { | |
a55774a1 | 2678 | fprintf (stderr, "\n +<"); |
9dc6c00f KR |
2679 | print_symbol_value_1 (stderr, fixp->fx_addsy); |
2680 | fprintf (stderr, ">"); | |
2681 | } | |
a55774a1 KR |
2682 | if (fixp->fx_subsy) |
2683 | { | |
2684 | fprintf (stderr, "\n -<"); | |
2685 | print_symbol_value_1 (stderr, fixp->fx_subsy); | |
2686 | fprintf (stderr, ">"); | |
2687 | } | |
9dc6c00f | 2688 | fprintf (stderr, "\n"); |
4acf8c78 KR |
2689 | } |
2690 | ||
fecd2382 | 2691 | /* end of write.c */ |