Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* write.c - emit .o file |
a78bc551 | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 1997 |
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 | 17 | You should have received a copy of the GNU General Public License |
f7ab9441 DE |
18 | along with GAS; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
fecd2382 | 21 | |
c593cf41 | 22 | /* This thing should be set up to do byteordering correctly. But... */ |
fecd2382 RP |
23 | |
24 | #include "as.h" | |
fecd2382 RP |
25 | #include "subsegs.h" |
26 | #include "obstack.h" | |
27 | #include "output-file.h" | |
28 | ||
d9d6f094 KR |
29 | /* This looks like a good idea. Let's try turning it on always, for now. */ |
30 | #undef BFD_FAST_SECTION_FILL | |
31 | #define BFD_FAST_SECTION_FILL | |
32 | ||
43ca9aa6 KR |
33 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop |
34 | instruction so that the disassembler does not choke on it. */ | |
6d5460ab RP |
35 | #ifndef NOP_OPCODE |
36 | #define NOP_OPCODE 0x00 | |
37 | #endif | |
38 | ||
f5c32424 KR |
39 | #ifndef TC_ADJUST_RELOC_COUNT |
40 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
41 | #endif | |
42 | ||
335d35c8 JL |
43 | #ifndef TC_FORCE_RELOCATION |
44 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
45 | #endif | |
46 | ||
96fe71e1 MM |
47 | #ifndef TC_FORCE_RELOCATION_SECTION |
48 | #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) | |
49 | #endif | |
50 | ||
51 | #ifndef MD_PCREL_FROM_SECTION | |
52 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) | |
53 | #endif | |
54 | ||
43ca9aa6 KR |
55 | #ifndef WORKING_DOT_WORD |
56 | extern CONST int md_short_jump_size; | |
57 | extern CONST int md_long_jump_size; | |
58 | #endif | |
59 | ||
1cf7548e | 60 | int symbol_table_frozen; |
a55774a1 | 61 | void print_fixup PARAMS ((fixS *)); |
1cf7548e | 62 | |
1b96bdce | 63 | #ifdef BFD_ASSEMBLER |
a55774a1 KR |
64 | static void renumber_sections PARAMS ((bfd *, asection *, PTR)); |
65 | ||
1b96bdce ILT |
66 | /* We generally attach relocs to frag chains. However, after we have |
67 | chained these all together into a segment, any relocs we add after | |
68 | that must be attached to a segment. This will include relocs added | |
69 | in md_estimate_size_for_relax, for example. */ | |
70 | static int frags_chained = 0; | |
71 | #endif | |
72 | ||
43ca9aa6 KR |
73 | #ifndef BFD_ASSEMBLER |
74 | ||
45432836 | 75 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
76 | struct frag *text_frag_root; |
77 | struct frag *data_frag_root; | |
78 | struct frag *bss_frag_root; | |
fecd2382 | 79 | |
09952cd9 KR |
80 | struct frag *text_last_frag; /* Last frag in segment. */ |
81 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 82 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 83 | #endif |
fecd2382 | 84 | |
1cf7548e | 85 | #ifndef BFD |
fecd2382 | 86 | static object_headers headers; |
80aab579 ILT |
87 | #endif |
88 | ||
89 | long string_byte_count; | |
fecd2382 RP |
90 | char *next_object_file_charP; /* Tracks object file bytes. */ |
91 | ||
3eb802b5 | 92 | #ifndef OBJ_VMS |
fecd2382 | 93 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 94 | #endif |
fecd2382 | 95 | |
43ca9aa6 KR |
96 | #endif /* BFD_ASSEMBLER */ |
97 | ||
a043f579 ILT |
98 | static int n_fixups; |
99 | ||
7a0405b9 | 100 | #ifdef BFD_ASSEMBLER |
b23f6743 | 101 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
102 | symbolS *add, symbolS *sub, |
103 | offsetT offset, int pcrel, | |
7a0405b9 | 104 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 105 | #else |
b23f6743 | 106 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
107 | symbolS *add, symbolS *sub, |
108 | offsetT offset, int pcrel, | |
109 | int r_type)); | |
5ac34ac3 | 110 | #endif |
3f81f3cf | 111 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
6efd877d | 112 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 113 | #endif |
d5364748 | 114 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
115 | |
116 | /* | |
117 | * fix_new() | |
118 | * | |
119 | * Create a fixS in obstack 'notes'. | |
120 | */ | |
5ac34ac3 ILT |
121 | static fixS * |
122 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
123 | r_type) | |
6efd877d KR |
124 | fragS *frag; /* Which frag? */ |
125 | int where; /* Where in that frag? */ | |
b23f6743 | 126 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 127 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 128 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 129 | offsetT offset; /* X_add_number. */ |
6efd877d | 130 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
131 | #ifdef BFD_ASSEMBLER |
132 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
133 | #else | |
6efd877d | 134 | int r_type; /* Relocation type */ |
43ca9aa6 | 135 | #endif |
fecd2382 | 136 | { |
6efd877d KR |
137 | fixS *fixP; |
138 | ||
a043f579 ILT |
139 | n_fixups++; |
140 | ||
6efd877d KR |
141 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); |
142 | ||
143 | fixP->fx_frag = frag; | |
144 | fixP->fx_where = where; | |
145 | fixP->fx_size = size; | |
f00f5ecd ILT |
146 | /* We've made fx_size a narrow field; check that it's wide enough. */ |
147 | if (fixP->fx_size != size) | |
148 | { | |
149 | as_bad ("field fx_size too small to hold %d", size); | |
150 | abort (); | |
151 | } | |
6efd877d KR |
152 | fixP->fx_addsy = add_symbol; |
153 | fixP->fx_subsy = sub_symbol; | |
154 | fixP->fx_offset = offset; | |
155 | fixP->fx_pcrel = pcrel; | |
a55774a1 | 156 | fixP->fx_plt = 0; |
43ca9aa6 | 157 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 158 | fixP->fx_r_type = r_type; |
c593cf41 | 159 | #endif |
6efd877d KR |
160 | fixP->fx_im_disp = 0; |
161 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 162 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 163 | fixP->fx_addnumber = 0; |
a58374d7 | 164 | fixP->fx_tcbit = 0; |
98c6bbbe | 165 | fixP->fx_done = 0; |
a78bc551 ILT |
166 | fixP->fx_no_overflow = 0; |
167 | fixP->fx_signed = 0; | |
43ca9aa6 | 168 | |
f00f5ecd ILT |
169 | #ifdef TC_FIX_TYPE |
170 | TC_INIT_FIX_DATA(fixP); | |
43ca9aa6 | 171 | #endif |
43ca9aa6 | 172 | |
84fa9814 KR |
173 | as_where (&fixP->fx_file, &fixP->fx_line); |
174 | ||
43ca9aa6 KR |
175 | /* Usually, we want relocs sorted numerically, but while |
176 | comparing to older versions of gas that have relocs | |
177 | reverse sorted, it is convenient to have this compile | |
178 | time option. xoxorich. */ | |
179 | ||
180 | { | |
6efd877d | 181 | |
43ca9aa6 | 182 | #ifdef BFD_ASSEMBLER |
1b96bdce ILT |
183 | fixS **seg_fix_rootP = (frags_chained |
184 | ? &seg_info (now_seg)->fix_root | |
185 | : &frchain_now->fix_root); | |
186 | fixS **seg_fix_tailP = (frags_chained | |
187 | ? &seg_info (now_seg)->fix_tail | |
188 | : &frchain_now->fix_tail); | |
43ca9aa6 | 189 | #endif |
09952cd9 | 190 | |
f6e504fe | 191 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 192 | |
43ca9aa6 KR |
193 | fixP->fx_next = *seg_fix_rootP; |
194 | *seg_fix_rootP = fixP; | |
6efd877d | 195 | |
f6e504fe | 196 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 197 | |
43ca9aa6 | 198 | fixP->fx_next = NULL; |
6efd877d | 199 | |
43ca9aa6 KR |
200 | if (*seg_fix_tailP) |
201 | (*seg_fix_tailP)->fx_next = fixP; | |
202 | else | |
203 | *seg_fix_rootP = fixP; | |
204 | *seg_fix_tailP = fixP; | |
6efd877d | 205 | |
f6e504fe | 206 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 207 | |
43ca9aa6 KR |
208 | } |
209 | ||
210 | return fixP; | |
211 | } | |
212 | ||
5ac34ac3 ILT |
213 | /* Create a fixup relative to a symbol (plus a constant). */ |
214 | ||
215 | fixS * | |
216 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
217 | fragS *frag; /* Which frag? */ | |
218 | int where; /* Where in that frag? */ | |
f7da4a99 | 219 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
220 | symbolS *add_symbol; /* X_add_symbol. */ |
221 | offsetT offset; /* X_add_number. */ | |
222 | int pcrel; /* TRUE if PC-relative relocation. */ | |
223 | #ifdef BFD_ASSEMBLER | |
224 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
225 | #else | |
226 | int r_type; /* Relocation type */ | |
227 | #endif | |
228 | { | |
229 | return fix_new_internal (frag, where, size, add_symbol, | |
230 | (symbolS *) NULL, offset, pcrel, r_type); | |
231 | } | |
232 | ||
233 | /* Create a fixup for an expression. Currently we only support fixups | |
234 | for difference expressions. That is itself more than most object | |
235 | file formats support anyhow. */ | |
236 | ||
237 | fixS * | |
238 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
239 | fragS *frag; /* Which frag? */ | |
240 | int where; /* Where in that frag? */ | |
f7da4a99 | 241 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
242 | expressionS *exp; /* Expression. */ |
243 | int pcrel; /* TRUE if PC-relative relocation. */ | |
244 | #ifdef BFD_ASSEMBLER | |
245 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
246 | #else | |
247 | int r_type; /* Relocation type */ | |
248 | #endif | |
249 | { | |
250 | symbolS *add = NULL; | |
251 | symbolS *sub = NULL; | |
252 | offsetT off = 0; | |
96fe71e1 | 253 | |
5ac34ac3 ILT |
254 | switch (exp->X_op) |
255 | { | |
256 | case O_absent: | |
257 | break; | |
258 | ||
4acf8c78 KR |
259 | case O_add: |
260 | /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if | |
261 | the difference expression cannot immediately be reduced. */ | |
262 | { | |
263 | extern symbolS *make_expr_symbol (); | |
264 | symbolS *stmp = make_expr_symbol (exp); | |
265 | exp->X_op = O_symbol; | |
266 | exp->X_op_symbol = 0; | |
267 | exp->X_add_symbol = stmp; | |
268 | exp->X_add_number = 0; | |
269 | return fix_new_exp (frag, where, size, exp, pcrel, r_type); | |
270 | } | |
271 | ||
96fe71e1 MM |
272 | case O_symbol_rva: |
273 | add = exp->X_add_symbol; | |
274 | off = exp->X_add_number; | |
275 | ||
276 | #if defined(BFD_ASSEMBLER) | |
277 | r_type = BFD_RELOC_RVA; | |
8095b665 ILT |
278 | #else |
279 | #if defined(TC_RVA_RELOC) | |
96fe71e1 MM |
280 | r_type = TC_RVA_RELOC; |
281 | #else | |
282 | as_fatal("rva not supported"); | |
8095b665 | 283 | #endif |
96fe71e1 MM |
284 | #endif |
285 | break; | |
286 | ||
b23f6743 KR |
287 | case O_uminus: |
288 | sub = exp->X_add_symbol; | |
289 | off = exp->X_add_number; | |
290 | break; | |
291 | ||
5ac34ac3 ILT |
292 | case O_subtract: |
293 | sub = exp->X_op_symbol; | |
294 | /* Fall through. */ | |
295 | case O_symbol: | |
296 | add = exp->X_add_symbol; | |
297 | /* Fall through. */ | |
298 | case O_constant: | |
299 | off = exp->X_add_number; | |
300 | break; | |
5d0cd0b8 | 301 | |
5ac34ac3 | 302 | default: |
00a69b89 ILT |
303 | add = make_expr_symbol (exp); |
304 | break; | |
5ac34ac3 ILT |
305 | } |
306 | ||
307 | return fix_new_internal (frag, where, size, add, sub, off, | |
308 | pcrel, r_type); | |
309 | } | |
310 | ||
43ca9aa6 KR |
311 | /* Append a string onto another string, bumping the pointer along. */ |
312 | void | |
313 | append (charPP, fromP, length) | |
314 | char **charPP; | |
315 | char *fromP; | |
316 | unsigned long length; | |
317 | { | |
318 | /* Don't trust memcpy() of 0 chars. */ | |
319 | if (length == 0) | |
320 | return; | |
321 | ||
80aab579 | 322 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
323 | *charPP += length; |
324 | } | |
325 | ||
5d0cd0b8 | 326 | #ifndef BFD_ASSEMBLER |
43ca9aa6 KR |
327 | int section_alignment[SEG_MAXIMUM_ORDINAL]; |
328 | #endif | |
329 | ||
330 | /* | |
331 | * This routine records the largest alignment seen for each segment. | |
332 | * If the beginning of the segment is aligned on the worst-case | |
333 | * boundary, all of the other alignments within it will work. At | |
334 | * least one object format really uses this info. | |
335 | */ | |
5d0cd0b8 | 336 | void |
43ca9aa6 KR |
337 | record_alignment (seg, align) |
338 | /* Segment to which alignment pertains */ | |
339 | segT seg; | |
340 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
341 | boundary, etc.) */ | |
342 | int align; | |
343 | { | |
5c800455 ILT |
344 | if (seg == absolute_section) |
345 | return; | |
43ca9aa6 KR |
346 | #ifdef BFD_ASSEMBLER |
347 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
348 | bfd_set_section_alignment (stdoutput, seg, align); | |
349 | #else | |
350 | if (align > section_alignment[(int) seg]) | |
351 | section_alignment[(int) seg] = align; | |
352 | #endif | |
353 | } | |
354 | ||
a55774a1 KR |
355 | #ifdef BFD_ASSEMBLER |
356 | ||
357 | /* Reset the section indices after removing the gas created sections. */ | |
358 | ||
359 | static void | |
360 | renumber_sections (abfd, sec, countparg) | |
361 | bfd *abfd; | |
362 | asection *sec; | |
363 | PTR countparg; | |
364 | { | |
365 | int *countp = (int *) countparg; | |
366 | ||
367 | sec->index = *countp; | |
368 | ++*countp; | |
369 | } | |
370 | ||
371 | #endif /* defined (BFD_ASSEMBLER) */ | |
372 | ||
43ca9aa6 KR |
373 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) |
374 | ||
375 | static fragS * | |
376 | chain_frchains_together_1 (section, frchp) | |
377 | segT section; | |
378 | struct frchain *frchp; | |
379 | { | |
380 | fragS dummy, *prev_frag = &dummy; | |
b04bc423 | 381 | #ifdef BFD_ASSEMBLER |
3f81f3cf | 382 | fixS fix_dummy, *prev_fix = &fix_dummy; |
b04bc423 | 383 | #endif |
262b22cd | 384 | |
43ca9aa6 KR |
385 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) |
386 | { | |
387 | prev_frag->fr_next = frchp->frch_root; | |
388 | prev_frag = frchp->frch_last; | |
96fe71e1 | 389 | assert (prev_frag->fr_type != 0); |
3a0e38ee | 390 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
391 | if (frchp->fix_root != (fixS *) NULL) |
392 | { | |
393 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
394 | seg_info (section)->fix_root = frchp->fix_root; | |
395 | prev_fix->fx_next = frchp->fix_root; | |
1b96bdce | 396 | seg_info (section)->fix_tail = frchp->fix_tail; |
262b22cd ILT |
397 | prev_fix = frchp->fix_tail; |
398 | } | |
3a0e38ee | 399 | #endif |
43ca9aa6 | 400 | } |
96fe71e1 | 401 | assert (prev_frag->fr_type != 0); |
43ca9aa6 KR |
402 | prev_frag->fr_next = 0; |
403 | return prev_frag; | |
404 | } | |
405 | ||
406 | #endif | |
407 | ||
408 | #ifdef BFD_ASSEMBLER | |
409 | ||
410 | static void | |
411 | chain_frchains_together (abfd, section, xxx) | |
412 | bfd *abfd; /* unused */ | |
413 | segT section; | |
a58374d7 | 414 | PTR xxx; /* unused */ |
43ca9aa6 | 415 | { |
f2f7d044 ILT |
416 | segment_info_type *info; |
417 | ||
418 | /* BFD may have introduced its own sections without using | |
419 | subseg_new, so it is possible that seg_info is NULL. */ | |
420 | info = seg_info (section); | |
421 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
422 | info->frchainP->frch_last |
423 | = chain_frchains_together_1 (section, info->frchainP); | |
1b96bdce ILT |
424 | |
425 | /* Now that we've chained the frags together, we must add new fixups | |
426 | to the segment, not to the frag chain. */ | |
427 | frags_chained = 1; | |
43ca9aa6 KR |
428 | } |
429 | ||
430 | #endif | |
542e1629 | 431 | |
d5364748 | 432 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 433 | |
5d0cd0b8 | 434 | void |
6efd877d KR |
435 | remove_subsegs (head, seg, root, last) |
436 | frchainS *head; | |
437 | int seg; | |
438 | fragS **root; | |
439 | fragS **last; | |
65bfcf2e | 440 | { |
65bfcf2e | 441 | *root = head->frch_root; |
43ca9aa6 KR |
442 | *last = chain_frchains_together_1 (seg, head); |
443 | } | |
444 | ||
445 | #endif /* BFD */ | |
446 | ||
80aab579 ILT |
447 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
448 | ||
43ca9aa6 | 449 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
450 | static void |
451 | cvt_frag_to_fill (sec, fragP) | |
452 | segT sec; | |
43ca9aa6 | 453 | fragS *fragP; |
43ca9aa6 | 454 | #else |
58d4951d | 455 | static void |
d4083e29 | 456 | cvt_frag_to_fill (headersP, sec, fragP) |
3f81f3cf | 457 | object_headers *headersP; |
d4083e29 | 458 | segT sec; |
58d4951d | 459 | fragS *fragP; |
43ca9aa6 | 460 | #endif |
58d4951d | 461 | { |
43ca9aa6 | 462 | switch (fragP->fr_type) |
6efd877d | 463 | { |
43ca9aa6 | 464 | case rs_align: |
cd3b81bd | 465 | case rs_align_code: |
43ca9aa6 | 466 | case rs_org: |
cd3b81bd | 467 | case rs_space: |
43ca9aa6 KR |
468 | #ifdef HANDLE_ALIGN |
469 | HANDLE_ALIGN (fragP); | |
470 | #endif | |
43ca9aa6 | 471 | know (fragP->fr_next != NULL); |
43ca9aa6 KR |
472 | fragP->fr_offset = (fragP->fr_next->fr_address |
473 | - fragP->fr_address | |
98c6bbbe | 474 | - fragP->fr_fix) / fragP->fr_var; |
c151fd1e KR |
475 | if (fragP->fr_offset < 0) |
476 | { | |
477 | as_bad ("attempt to .org/.space backwards? (%ld)", | |
478 | (long) fragP->fr_offset); | |
479 | } | |
cd3b81bd | 480 | fragP->fr_type = rs_fill; |
43ca9aa6 | 481 | break; |
65bfcf2e | 482 | |
43ca9aa6 KR |
483 | case rs_fill: |
484 | break; | |
485 | ||
486 | case rs_machine_dependent: | |
487 | #ifdef BFD_ASSEMBLER | |
488 | md_convert_frag (stdoutput, sec, fragP); | |
489 | #else | |
d4083e29 | 490 | md_convert_frag (headersP, sec, fragP); |
43ca9aa6 KR |
491 | #endif |
492 | ||
d5364748 | 493 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
494 | |
495 | /* | |
496 | * After md_convert_frag, we make the frag into a ".space 0". | |
497 | * Md_convert_frag() should set up any fixSs and constants | |
498 | * required. | |
499 | */ | |
500 | frag_wane (fragP); | |
501 | break; | |
502 | ||
503 | #ifndef WORKING_DOT_WORD | |
504 | case rs_broken_word: | |
505 | { | |
506 | struct broken_word *lie; | |
507 | ||
508 | if (fragP->fr_subtype) | |
509 | { | |
510 | fragP->fr_fix += md_short_jump_size; | |
511 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
512 | lie && lie->dispfrag == fragP; | |
513 | lie = lie->next_broken_word) | |
514 | if (lie->added == 1) | |
515 | fragP->fr_fix += md_long_jump_size; | |
516 | } | |
517 | frag_wane (fragP); | |
518 | } | |
519 | break; | |
520 | #endif | |
521 | ||
522 | default: | |
523 | BAD_CASE (fragP->fr_type); | |
524 | break; | |
6efd877d | 525 | } |
65bfcf2e | 526 | } |
6efd877d | 527 | |
80aab579 ILT |
528 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
529 | ||
43ca9aa6 KR |
530 | #ifdef BFD_ASSEMBLER |
531 | static void | |
532 | relax_and_size_seg (abfd, sec, xxx) | |
533 | bfd *abfd; | |
534 | asection *sec; | |
a58374d7 | 535 | PTR xxx; |
43ca9aa6 KR |
536 | { |
537 | flagword flags; | |
13e9182d KR |
538 | fragS *fragp; |
539 | segment_info_type *seginfo; | |
540 | int x; | |
541 | valueT size, newsize; | |
43ca9aa6 | 542 | |
f00f5ecd ILT |
543 | subseg_change (sec, 0); |
544 | ||
43ca9aa6 KR |
545 | flags = bfd_get_section_flags (abfd, sec); |
546 | ||
d9d6f094 | 547 | seginfo = seg_info (sec); |
13e9182d | 548 | if (seginfo && seginfo->frchainP) |
43ca9aa6 | 549 | { |
13e9182d KR |
550 | relax_segment (seginfo->frchainP->frch_root, sec); |
551 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
552 | cvt_frag_to_fill (sec, fragp); | |
553 | for (fragp = seginfo->frchainP->frch_root; | |
554 | fragp->fr_next; | |
555 | fragp = fragp->fr_next) | |
556 | /* walk to last elt */; | |
557 | size = fragp->fr_address + fragp->fr_fix; | |
558 | } | |
559 | else | |
560 | size = 0; | |
a58374d7 ILT |
561 | |
562 | if (size > 0 && ! seginfo->bss) | |
563 | flags |= SEC_HAS_CONTENTS; | |
564 | ||
565 | /* @@ This is just an approximation. */ | |
5f6efd5a | 566 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
567 | flags |= SEC_RELOC; |
568 | else | |
569 | flags &= ~SEC_RELOC; | |
570 | x = bfd_set_section_flags (abfd, sec, flags); | |
571 | assert (x == true); | |
572 | ||
20b39b6f JL |
573 | newsize = md_section_align (sec, size); |
574 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
575 | assert (x == true); |
576 | ||
577 | /* If the size had to be rounded up, add some padding in the last | |
578 | non-empty frag. */ | |
13e9182d KR |
579 | assert (newsize >= size); |
580 | if (size != newsize) | |
581 | { | |
582 | fragS *last = seginfo->frchainP->frch_last; | |
583 | fragp = seginfo->frchainP->frch_root; | |
584 | while (fragp->fr_next != last) | |
585 | fragp = fragp->fr_next; | |
586 | last->fr_address = size; | |
587 | fragp->fr_offset += newsize - size; | |
588 | } | |
589 | ||
43ca9aa6 KR |
590 | #ifdef tc_frob_section |
591 | tc_frob_section (sec); | |
592 | #endif | |
593 | #ifdef obj_frob_section | |
594 | obj_frob_section (sec); | |
595 | #endif | |
596 | } | |
597 | ||
d5364748 KR |
598 | #ifdef DEBUG2 |
599 | static void | |
600 | dump_section_relocs (abfd, sec, stream_) | |
601 | bfd *abfd; | |
602 | asection *sec; | |
603 | char *stream_; | |
604 | { | |
605 | FILE *stream = (FILE *) stream_; | |
606 | segment_info_type *seginfo = seg_info (sec); | |
607 | fixS *fixp = seginfo->fix_root; | |
608 | ||
609 | if (!fixp) | |
610 | return; | |
611 | ||
612 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
613 | while (fixp) | |
614 | { | |
615 | symbolS *s = fixp->fx_addsy; | |
616 | if (s) | |
1cf7548e KR |
617 | { |
618 | fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), | |
619 | s->bsym->section->name); | |
620 | if (s->bsym->flags & BSF_SECTION_SYM) | |
621 | { | |
622 | fprintf (stream, " section sym"); | |
623 | if (S_GET_VALUE (s)) | |
624 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
625 | } | |
626 | else | |
627 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
628 | fprintf (stream, ")+%x\n", fixp->fx_offset); | |
629 | } | |
d5364748 KR |
630 | else |
631 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
632 | fixp = fixp->fx_next; | |
633 | } | |
634 | } | |
635 | #else | |
8095b665 | 636 | #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0) |
d5364748 KR |
637 | #endif |
638 | ||
98c6bbbe KR |
639 | #ifndef EMIT_SECTION_SYMBOLS |
640 | #define EMIT_SECTION_SYMBOLS 1 | |
641 | #endif | |
642 | ||
d5364748 KR |
643 | static void |
644 | adjust_reloc_syms (abfd, sec, xxx) | |
645 | bfd *abfd; | |
646 | asection *sec; | |
a58374d7 | 647 | PTR xxx; |
d5364748 KR |
648 | { |
649 | segment_info_type *seginfo = seg_info (sec); | |
650 | fixS *fixp; | |
651 | ||
652 | if (seginfo == NULL) | |
653 | return; | |
654 | ||
655 | dump_section_relocs (abfd, sec, stderr); | |
656 | ||
657 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
98c6bbbe KR |
658 | if (fixp->fx_done) |
659 | /* ignore it */; | |
660 | else if (fixp->fx_addsy) | |
d5364748 | 661 | { |
a55774a1 | 662 | symbolS *sym; |
4acf8c78 KR |
663 | asection *symsec; |
664 | ||
665 | reduce_fixup: | |
666 | ||
a55774a1 KR |
667 | #ifdef DEBUG5 |
668 | fprintf (stderr, "\n\nadjusting fixup:\n"); | |
669 | print_fixup (fixp); | |
670 | #endif | |
671 | ||
672 | sym = fixp->fx_addsy; | |
d5364748 | 673 | |
73d25784 ILT |
674 | /* All symbols should have already been resolved at this |
675 | point. It is possible to see unresolved expression | |
676 | symbols, though, since they are not in the regular symbol | |
677 | table. */ | |
678 | if (sym != NULL && ! sym->sy_resolved) | |
679 | resolve_symbol_value (sym); | |
680 | if (fixp->fx_subsy != NULL && ! fixp->fx_subsy->sy_resolved) | |
681 | resolve_symbol_value (fixp->fx_subsy); | |
682 | ||
9c199842 ILT |
683 | /* If this symbol is equated to an undefined symbol, convert |
684 | the fixup to being against that symbol. */ | |
685 | if (sym->sy_value.X_op == O_symbol | |
686 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
687 | { | |
688 | fixp->fx_offset += sym->sy_value.X_add_number; | |
689 | sym = sym->sy_value.X_add_symbol; | |
690 | fixp->fx_addsy = sym; | |
691 | } | |
692 | ||
693 | symsec = S_GET_SEGMENT (sym); | |
694 | ||
e120d9fb | 695 | if (sym != NULL && sym->sy_mri_common) |
1356d77d ILT |
696 | { |
697 | /* These symbols are handled specially in fixup_segment. */ | |
698 | goto done; | |
699 | } | |
700 | ||
8095b665 ILT |
701 | if (bfd_is_abs_section (symsec)) |
702 | { | |
703 | /* The fixup_segment routine will not use this symbol in a | |
704 | relocation unless TC_FORCE_RELOCATION returns 1. */ | |
705 | if (TC_FORCE_RELOCATION (fixp)) | |
706 | { | |
707 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
708 | #ifdef UNDEFINED_DIFFERENCE_OK | |
709 | if (fixp->fx_subsy != NULL) | |
710 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
711 | #endif | |
712 | } | |
713 | goto done; | |
714 | } | |
715 | ||
a58374d7 ILT |
716 | /* If it's one of these sections, assume the symbol is |
717 | definitely going to be output. The code in | |
718 | md_estimate_size_before_relax in tc-mips.c uses this test | |
719 | as well, so if you change this code you should look at that | |
720 | code. */ | |
cd3b81bd | 721 | if (bfd_is_und_section (symsec) |
d5364748 | 722 | || bfd_is_com_section (symsec)) |
80aab579 ILT |
723 | { |
724 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
d4083e29 KR |
725 | #ifdef UNDEFINED_DIFFERENCE_OK |
726 | /* We have the difference of an undefined symbol and some | |
727 | other symbol. Make sure to mark the other symbol as used | |
728 | in a relocation so that it will always be output. */ | |
729 | if (fixp->fx_subsy) | |
730 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
731 | #endif | |
a55774a1 | 732 | goto done; |
80aab579 | 733 | } |
d5364748 | 734 | |
54815b9a ILT |
735 | /* Don't try to reduce relocs which refer to .linkonce |
736 | sections. It can lead to confusion when a debugging | |
737 | section refers to a .linkonce section. I hope this will | |
738 | always be correct. */ | |
6259c65f | 739 | if (symsec != sec) |
54815b9a | 740 | { |
6259c65f ILT |
741 | boolean linkonce; |
742 | ||
743 | linkonce = false; | |
744 | #ifdef BFD_ASSEMBLER | |
745 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
746 | != 0) | |
747 | linkonce = true; | |
748 | #endif | |
749 | #ifdef OBJ_ELF | |
750 | /* The GNU toolchain uses an extension for ELF: a section | |
751 | beginning with the magic string .gnu.linkonce is a | |
752 | linkonce section. */ | |
753 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
754 | sizeof ".gnu.linkonce" - 1) == 0) | |
755 | linkonce = true; | |
756 | #endif | |
757 | ||
758 | if (linkonce) | |
759 | { | |
760 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
54815b9a | 761 | #ifdef UNDEFINED_DIFFERENCE_OK |
6259c65f ILT |
762 | if (fixp->fx_subsy != NULL) |
763 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
54815b9a | 764 | #endif |
6259c65f ILT |
765 | goto done; |
766 | } | |
54815b9a | 767 | } |
54815b9a | 768 | |
d5364748 KR |
769 | /* Since we're reducing to section symbols, don't attempt to reduce |
770 | anything that's already using one. */ | |
98c6bbbe | 771 | if (sym->bsym->flags & BSF_SECTION_SYM) |
80aab579 ILT |
772 | { |
773 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 774 | goto done; |
80aab579 | 775 | } |
d5364748 KR |
776 | |
777 | /* Is there some other reason we can't adjust this one? (E.g., | |
778 | call/bal links in i960-bout symbols.) */ | |
779 | #ifdef obj_fix_adjustable | |
780 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
781 | { |
782 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 783 | goto done; |
80aab579 | 784 | } |
d5364748 | 785 | #endif |
efa0c22e KR |
786 | |
787 | /* Is there some other (target cpu dependent) reason we can't adjust | |
5d0cd0b8 | 788 | this one? (E.g. relocations involving function addresses on |
efa0c22e KR |
789 | the PA. */ |
790 | #ifdef tc_fix_adjustable | |
791 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
792 | { |
793 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 794 | goto done; |
20b39b6f | 795 | } |
efa0c22e KR |
796 | #endif |
797 | ||
d5364748 KR |
798 | /* If the section symbol isn't going to be output, the relocs |
799 | at least should still work. If not, figure out what to do | |
5d0cd0b8 ILT |
800 | when we run into that case. |
801 | ||
802 | We refetch the segment when calling section_symbol, rather | |
803 | than using symsec, because S_GET_VALUE may wind up changing | |
804 | the section when it calls resolve_symbol_value. */ | |
d5364748 | 805 | fixp->fx_offset += S_GET_VALUE (sym); |
5d0cd0b8 | 806 | fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym)); |
80aab579 | 807 | fixp->fx_addsy->sy_used_in_reloc = 1; |
a55774a1 KR |
808 | |
809 | done: | |
810 | ; | |
d5364748 | 811 | } |
1cf7548e | 812 | #if 1/*def RELOC_REQUIRES_SYMBOL*/ |
e67a0640 KR |
813 | else |
814 | { | |
815 | /* There was no symbol required by this relocation. However, | |
816 | BFD doesn't really handle relocations without symbols well. | |
817 | (At least, the COFF support doesn't.) So for now we fake up | |
818 | a local symbol in the absolute section. */ | |
e8501a72 | 819 | |
1cf7548e | 820 | fixp->fx_addsy = section_symbol (absolute_section); |
a55774a1 | 821 | /* fixp->fx_addsy->sy_used_in_reloc = 1; */ |
e67a0640 KR |
822 | } |
823 | #endif | |
d5364748 KR |
824 | |
825 | dump_section_relocs (abfd, sec, stderr); | |
826 | } | |
827 | ||
43ca9aa6 | 828 | static void |
8d6c34a1 | 829 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
830 | bfd *abfd; |
831 | asection *sec; | |
a58374d7 | 832 | PTR xxx; |
43ca9aa6 KR |
833 | { |
834 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
835 | int i; |
836 | unsigned int n; | |
43ca9aa6 KR |
837 | arelent **relocs; |
838 | fixS *fixp; | |
98c6bbbe | 839 | char *err; |
43ca9aa6 | 840 | |
d5364748 KR |
841 | /* If seginfo is NULL, we did not create this section; don't do |
842 | anything with it. */ | |
843 | if (seginfo == NULL) | |
43ca9aa6 KR |
844 | return; |
845 | ||
846 | fixup_segment (seginfo->fix_root, sec); | |
847 | ||
3d3c5039 | 848 | n = 0; |
d5364748 KR |
849 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
850 | n++; | |
43ca9aa6 | 851 | |
d5364748 | 852 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 853 | /* Set up reloc information as well. */ |
590c50d8 | 854 | relocs = (arelent **) xmalloc (n * sizeof (arelent *)); |
8d6c34a1 | 855 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 856 | |
3d3c5039 ILT |
857 | i = 0; |
858 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
859 | { | |
860 | arelent *reloc; | |
3d3c5039 | 861 | bfd_reloc_status_type s; |
a043f579 | 862 | symbolS *sym; |
3d3c5039 | 863 | |
98c6bbbe | 864 | if (fixp->fx_done) |
3d3c5039 | 865 | { |
3d3c5039 ILT |
866 | n--; |
867 | continue; | |
868 | } | |
a043f579 ILT |
869 | |
870 | /* If this is an undefined symbol which was equated to another | |
871 | symbol, then use generate the reloc against the latter symbol | |
872 | rather than the former. */ | |
873 | sym = fixp->fx_addsy; | |
874 | while (sym->sy_value.X_op == O_symbol | |
875 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
3569064f ILT |
876 | { |
877 | symbolS *n; | |
878 | ||
879 | /* We must avoid looping, as that can occur with a badly | |
880 | written program. */ | |
881 | n = sym->sy_value.X_add_symbol; | |
882 | if (n == sym) | |
883 | break; | |
884 | fixp->fx_offset += sym->sy_value.X_add_number; | |
885 | sym = n; | |
886 | } | |
a043f579 ILT |
887 | fixp->fx_addsy = sym; |
888 | ||
3d3c5039 ILT |
889 | reloc = tc_gen_reloc (sec, fixp); |
890 | if (!reloc) | |
891 | { | |
892 | n--; | |
893 | continue; | |
894 | } | |
5d0cd0b8 ILT |
895 | |
896 | #if 0 | |
897 | /* This test is triggered inappropriately for the SH. */ | |
c43d56f7 | 898 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
899 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
900 | abort (); | |
5d0cd0b8 | 901 | #endif |
335d35c8 | 902 | |
4acf8c78 KR |
903 | s = bfd_install_relocation (stdoutput, reloc, |
904 | fixp->fx_frag->fr_literal, | |
905 | fixp->fx_frag->fr_address, | |
906 | sec, &err); | |
3d3c5039 ILT |
907 | switch (s) |
908 | { | |
909 | case bfd_reloc_ok: | |
910 | break; | |
df44a852 KR |
911 | case bfd_reloc_overflow: |
912 | as_bad_where (fixp->fx_file, fixp->fx_line, "relocation overflow"); | |
913 | break; | |
3d3c5039 | 914 | default: |
590c50d8 | 915 | as_fatal ("%s:%u: bad return from bfd_install_relocation", |
4acf8c78 | 916 | fixp->fx_file, fixp->fx_line); |
3d3c5039 ILT |
917 | } |
918 | relocs[i++] = reloc; | |
919 | } | |
d5364748 KR |
920 | #else |
921 | n = n * MAX_RELOC_EXPANSION; | |
922 | /* Set up reloc information as well. */ | |
b1400218 | 923 | relocs = (arelent **) xmalloc (n * sizeof (arelent *)); |
d5364748 KR |
924 | |
925 | i = 0; | |
926 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
927 | { | |
928 | arelent **reloc; | |
d5364748 KR |
929 | char *data; |
930 | bfd_reloc_status_type s; | |
a043f579 | 931 | symbolS *sym; |
d5364748 KR |
932 | int j; |
933 | ||
98c6bbbe | 934 | if (fixp->fx_done) |
d5364748 | 935 | { |
d5364748 KR |
936 | n--; |
937 | continue; | |
938 | } | |
a043f579 ILT |
939 | |
940 | /* If this is an undefined symbol which was equated to another | |
941 | symbol, then use generate the reloc against the latter symbol | |
942 | rather than the former. */ | |
943 | sym = fixp->fx_addsy; | |
944 | while (sym->sy_value.X_op == O_symbol | |
945 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
946 | sym = sym->sy_value.X_add_symbol; | |
947 | fixp->fx_addsy = sym; | |
948 | ||
d5364748 KR |
949 | reloc = tc_gen_reloc (sec, fixp); |
950 | ||
951 | for (j = 0; reloc[j]; j++) | |
952 | { | |
953 | relocs[i++] = reloc[j]; | |
954 | assert(i <= n); | |
955 | } | |
956 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 957 | if (fixp->fx_where + fixp->fx_size |
d5364748 | 958 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
73d25784 ILT |
959 | as_bad_where (fixp->fx_file, fixp->fx_line, |
960 | "internal error: fixup not contained within frag"); | |
d5364748 KR |
961 | for (j = 0; reloc[j]; j++) |
962 | { | |
a55774a1 KR |
963 | s = bfd_install_relocation (stdoutput, reloc[j], |
964 | fixp->fx_frag->fr_literal, | |
965 | fixp->fx_frag->fr_address, | |
966 | sec, &err); | |
d5364748 KR |
967 | switch (s) |
968 | { | |
98c6bbbe KR |
969 | case bfd_reloc_ok: |
970 | break; | |
4acf8c78 KR |
971 | case bfd_reloc_overflow: |
972 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
973 | "relocation overflow"); | |
974 | break; | |
98c6bbbe | 975 | default: |
590c50d8 | 976 | as_fatal ("%s:%u: bad return from bfd_install_relocation", |
4acf8c78 | 977 | fixp->fx_file, fixp->fx_line); |
d5364748 KR |
978 | } |
979 | } | |
980 | } | |
981 | n = i; | |
982 | #endif | |
983 | ||
1cf7548e KR |
984 | #ifdef DEBUG4 |
985 | { | |
986 | int i, j, nsyms; | |
987 | asymbol **sympp; | |
988 | sympp = bfd_get_outsymbols (stdoutput); | |
989 | nsyms = bfd_get_symcount (stdoutput); | |
990 | for (i = 0; i < n; i++) | |
991 | if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) | |
992 | { | |
993 | for (j = 0; j < nsyms; j++) | |
994 | if (sympp[j] == *relocs[i]->sym_ptr_ptr) | |
995 | break; | |
996 | if (j == nsyms) | |
997 | abort (); | |
998 | } | |
999 | } | |
1000 | #endif | |
1001 | ||
3d3c5039 ILT |
1002 | if (n) |
1003 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
1004 | else |
1005 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
1006 | (bfd_get_section_flags (abfd, sec) |
1007 | & (flagword) ~SEC_RELOC)); | |
98c6bbbe KR |
1008 | |
1009 | #ifdef DEBUG3 | |
d5364748 KR |
1010 | { |
1011 | int i; | |
1012 | arelent *r; | |
1013 | asymbol *s; | |
1014 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
1015 | for (i = 0; i < n; i++) | |
1016 | { | |
1017 | r = relocs[i]; | |
1018 | s = *r->sym_ptr_ptr; | |
1019 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
1020 | i, r, r->address, s->name, r->addend); | |
1021 | } | |
1022 | } | |
1023 | #endif | |
8d6c34a1 | 1024 | } |
d5364748 | 1025 | |
8d6c34a1 KR |
1026 | static void |
1027 | write_contents (abfd, sec, xxx) | |
1028 | bfd *abfd; | |
1029 | asection *sec; | |
a58374d7 | 1030 | PTR xxx; |
8d6c34a1 KR |
1031 | { |
1032 | segment_info_type *seginfo = seg_info (sec); | |
1033 | unsigned long offset = 0; | |
80aab579 | 1034 | fragS *f; |
3d3c5039 ILT |
1035 | |
1036 | /* Write out the frags. */ | |
f37449aa ILT |
1037 | if (seginfo == NULL |
1038 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
1039 | return; |
1040 | ||
80aab579 ILT |
1041 | for (f = seginfo->frchainP->frch_root; |
1042 | f; | |
1043 | f = f->fr_next) | |
43ca9aa6 KR |
1044 | { |
1045 | int x; | |
1046 | unsigned long fill_size; | |
1047 | char *fill_literal; | |
1048 | long count; | |
1049 | ||
80aab579 ILT |
1050 | assert (f->fr_type == rs_fill); |
1051 | if (f->fr_fix) | |
43ca9aa6 KR |
1052 | { |
1053 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
1054 | f->fr_literal, (file_ptr) offset, |
1055 | (bfd_size_type) f->fr_fix); | |
1cf7548e KR |
1056 | if (x == false) |
1057 | { | |
1058 | bfd_perror (stdoutput->filename); | |
1059 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
4acf8c78 | 1060 | exit (EXIT_FAILURE); |
1cf7548e | 1061 | } |
80aab579 | 1062 | offset += f->fr_fix; |
43ca9aa6 | 1063 | } |
80aab579 ILT |
1064 | fill_literal = f->fr_literal + f->fr_fix; |
1065 | fill_size = f->fr_var; | |
1066 | count = f->fr_offset; | |
43ca9aa6 KR |
1067 | assert (count >= 0); |
1068 | if (fill_size && count) | |
d9d6f094 KR |
1069 | { |
1070 | char buf[256]; | |
305a3af6 SC |
1071 | if (fill_size > sizeof(buf)) |
1072 | { | |
1073 | /* Do it the old way. Can this ever happen? */ | |
1074 | while (count--) | |
1075 | { | |
1076 | x = bfd_set_section_contents (stdoutput, sec, | |
1077 | fill_literal, | |
1078 | (file_ptr) offset, | |
1079 | (bfd_size_type) fill_size); | |
1080 | if (x == false) | |
1081 | { | |
1082 | bfd_perror (stdoutput->filename); | |
1083 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
1084 | exit (EXIT_FAILURE); | |
1085 | } | |
1086 | offset += fill_size; | |
1087 | } | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | /* Build a buffer full of fill objects and output it as | |
1092 | often as necessary. This saves on the overhead of | |
1093 | potentially lots of bfd_set_section_contents calls. */ | |
1094 | int n_per_buf, i; | |
1095 | if (fill_size == 1) | |
1096 | { | |
1097 | n_per_buf = sizeof (buf); | |
1098 | memset (buf, *fill_literal, n_per_buf); | |
1099 | } | |
1100 | else | |
1101 | { | |
1102 | char *bufp; | |
1103 | n_per_buf = sizeof(buf)/fill_size; | |
1104 | for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) | |
1105 | memcpy(bufp, fill_literal, fill_size); | |
1106 | } | |
1107 | for (; count > 0; count -= n_per_buf) | |
1108 | { | |
1109 | n_per_buf = n_per_buf > count ? count : n_per_buf; | |
1110 | x = bfd_set_section_contents (stdoutput, sec, | |
1111 | buf, (file_ptr) offset, | |
1112 | (bfd_size_type) n_per_buf * fill_size); | |
1113 | if (x != true) | |
1114 | as_fatal ("Cannot write to output file."); | |
1115 | offset += n_per_buf * fill_size; | |
1116 | } | |
1117 | } | |
d9d6f094 | 1118 | } |
43ca9aa6 | 1119 | } |
43ca9aa6 KR |
1120 | } |
1121 | #endif | |
1122 | ||
80aab579 | 1123 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
1124 | static void |
1125 | merge_data_into_text () | |
1126 | { | |
4064305e | 1127 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
1128 | seg_info (text_section)->frchainP->frch_last->fr_next = |
1129 | seg_info (data_section)->frchainP->frch_root; | |
1130 | seg_info (text_section)->frchainP->frch_last = | |
1131 | seg_info (data_section)->frchainP->frch_last; | |
1132 | seg_info (data_section)->frchainP = 0; | |
1133 | #else | |
1134 | fixS *tmp; | |
1135 | ||
1136 | text_last_frag->fr_next = data_frag_root; | |
1137 | text_last_frag = data_last_frag; | |
1138 | data_last_frag = NULL; | |
1139 | data_frag_root = NULL; | |
1140 | if (text_fix_root) | |
1141 | { | |
1142 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
1143 | tmp->fx_next = data_fix_root; | |
1144 | text_fix_tail = data_fix_tail; | |
1145 | } | |
1146 | else | |
1147 | text_fix_root = data_fix_root; | |
1148 | data_fix_root = NULL; | |
1149 | #endif | |
1150 | } | |
80aab579 | 1151 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
1152 | |
1153 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
1154 | static void | |
1155 | relax_and_size_all_segments () | |
1156 | { | |
13e9182d KR |
1157 | fragS *fragP; |
1158 | ||
b23f6743 KR |
1159 | relax_segment (text_frag_root, SEG_TEXT); |
1160 | relax_segment (data_frag_root, SEG_DATA); | |
1161 | relax_segment (bss_frag_root, SEG_BSS); | |
1162 | /* | |
1163 | * Now the addresses of frags are correct within the segment. | |
1164 | */ | |
1165 | ||
1166 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
1167 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
1168 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
1169 | ||
1170 | /* | |
1171 | * Join the 2 segments into 1 huge segment. | |
1172 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
1173 | * Then join the data frags after the text frags. | |
1174 | * | |
1175 | * Determine a_data [length of data segment]. | |
1176 | */ | |
1177 | if (data_frag_root) | |
1178 | { | |
1179 | register relax_addressT slide; | |
1180 | ||
1181 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
1182 | ||
1183 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
1184 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
1185 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
1186 | #ifdef OBJ_BOUT | |
1187 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
1188 | /* For b.out: If the data section has a strict alignment | |
1189 | requirement, its load address in the .o file will be | |
1190 | rounded up from the size of the text section. These | |
1191 | two values are *not* the same! Similarly for the bss | |
1192 | section.... */ | |
1193 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
1194 | #endif | |
1195 | ||
1196 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
1197 | { | |
1198 | fragP->fr_address += slide; | |
1199 | } /* for each data frag */ | |
1200 | ||
1201 | know (text_last_frag != 0); | |
1202 | text_last_frag->fr_next = data_frag_root; | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | H_SET_DATA_SIZE (&headers, 0); | |
1207 | } | |
1208 | ||
1209 | #ifdef OBJ_BOUT | |
1210 | /* See above comments on b.out data section address. */ | |
1211 | { | |
1212 | long bss_vma; | |
1213 | if (data_last_frag == 0) | |
1214 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
1215 | else | |
1216 | bss_vma = data_last_frag->fr_address; | |
1217 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
1218 | bss_address_frag.fr_address = bss_vma; | |
1219 | } | |
1220 | #else /* ! OBJ_BOUT */ | |
1221 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
1222 | H_GET_DATA_SIZE (&headers)); | |
1223 | ||
efa0c22e | 1224 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
1225 | |
1226 | /* Slide all the frags */ | |
1227 | if (bss_frag_root) | |
1228 | { | |
1229 | relax_addressT slide = bss_address_frag.fr_address; | |
1230 | ||
1231 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
1232 | { | |
1233 | fragP->fr_address += slide; | |
1234 | } /* for each bss frag */ | |
1235 | } | |
1236 | ||
b23f6743 KR |
1237 | if (bss_last_frag) |
1238 | H_SET_BSS_SIZE (&headers, | |
1239 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
1240 | else | |
1241 | H_SET_BSS_SIZE (&headers, 0); | |
1242 | } | |
1243 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
1244 | ||
d5364748 KR |
1245 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1246 | ||
1b96bdce | 1247 | #ifdef BFD_ASSEMBLER |
1cf7548e KR |
1248 | static void |
1249 | set_symtab () | |
1250 | { | |
1251 | int nsyms; | |
1252 | asymbol **asympp; | |
1253 | symbolS *symp; | |
1254 | boolean result; | |
1255 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); | |
1256 | ||
1257 | /* Count symbols. We can't rely on a count made by the loop in | |
1258 | write_object_file, because *_frob_file may add a new symbol or | |
1259 | two. */ | |
1260 | nsyms = 0; | |
1261 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1262 | nsyms++; | |
1263 | ||
1264 | if (nsyms) | |
1265 | { | |
1266 | int i; | |
1267 | ||
1268 | asympp = (asymbol **) bfd_alloc (stdoutput, | |
1269 | nsyms * sizeof (asymbol *)); | |
1270 | symp = symbol_rootP; | |
1271 | for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) | |
1272 | { | |
1273 | asympp[i] = symp->bsym; | |
1274 | symp->written = 1; | |
1275 | } | |
1276 | } | |
1277 | else | |
1278 | asympp = 0; | |
1279 | result = bfd_set_symtab (stdoutput, asympp, nsyms); | |
1280 | assert (result == true); | |
1281 | symbol_table_frozen = 1; | |
1282 | } | |
1b96bdce | 1283 | #endif |
1cf7548e | 1284 | |
5d0cd0b8 | 1285 | void |
6efd877d | 1286 | write_object_file () |
45432836 | 1287 | { |
741f4d66 | 1288 | struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 1289 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
741f4d66 | 1290 | fragS *fragP; /* Track along all frags. */ |
58d4951d | 1291 | #endif |
6efd877d | 1292 | |
43ca9aa6 KR |
1293 | /* Do we really want to write it? */ |
1294 | { | |
1295 | int n_warns, n_errs; | |
1296 | n_warns = had_warnings (); | |
1297 | n_errs = had_errors (); | |
1298 | /* The -Z flag indicates that an object file should be generated, | |
1299 | regardless of warnings and errors. */ | |
def66e24 | 1300 | if (flag_always_generate_output) |
43ca9aa6 KR |
1301 | { |
1302 | if (n_warns || n_errs) | |
1303 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
1304 | n_errs, n_errs == 1 ? "" : "s", | |
1305 | n_warns, n_warns == 1 ? "" : "s"); | |
1306 | } | |
1307 | else | |
1308 | { | |
1309 | if (n_errs) | |
1310 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
1311 | n_errs, n_errs == 1 ? "" : "s", | |
1312 | n_warns, n_warns == 1 ? "" : "s"); | |
1313 | } | |
1314 | } | |
1315 | ||
3eb802b5 | 1316 | #ifdef OBJ_VMS |
1cf7548e KR |
1317 | /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call |
1318 | a routine to check for the definition of the procedure "_main", | |
1319 | and if so -- fix it up so that it can be program entry point. */ | |
8e86815b | 1320 | vms_check_for_main (); |
3f81f3cf | 1321 | #endif /* OBJ_VMS */ |
43ca9aa6 KR |
1322 | |
1323 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
1324 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
1325 | frag that requires least thought. ".align" frags like to have a | |
1326 | following frag since that makes calculating their intended length | |
1327 | trivial. | |
1328 | ||
1329 | @@ Is this really necessary?? */ | |
3eb802b5 | 1330 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 1331 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 1332 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 1333 | #else |
f2f7d044 | 1334 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 1335 | #endif |
3eb802b5 | 1336 | #endif |
6efd877d KR |
1337 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
1338 | { | |
43ca9aa6 | 1339 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
590c50d8 | 1340 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE, 0); |
43ca9aa6 KR |
1341 | /* frag_align will have left a new frag. |
1342 | Use this last frag for an empty ".fill". | |
1343 | ||
1344 | For this segment ... | |
1345 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
1346 | frag_wane (frag_now); |
1347 | frag_now->fr_fix = 0; | |
1348 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 1349 | } |
6efd877d | 1350 | |
43ca9aa6 KR |
1351 | /* From now on, we don't care about sub-segments. Build one frag chain |
1352 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 1353 | |
43ca9aa6 KR |
1354 | #ifdef BFD_ASSEMBLER |
1355 | /* Remove the sections created by gas for its own purposes. */ | |
1356 | { | |
1357 | asection **seclist, *sec; | |
a55774a1 KR |
1358 | int i; |
1359 | ||
43ca9aa6 KR |
1360 | seclist = &stdoutput->sections; |
1361 | while (seclist && *seclist) | |
1362 | { | |
1363 | sec = *seclist; | |
5ac34ac3 | 1364 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1365 | { |
1366 | sec = sec->next; | |
1367 | *seclist = sec; | |
1368 | stdoutput->section_count--; | |
1369 | if (!sec) | |
1370 | break; | |
1371 | } | |
1372 | if (*seclist) | |
1373 | seclist = &(*seclist)->next; | |
1374 | } | |
a55774a1 KR |
1375 | i = 0; |
1376 | bfd_map_over_sections (stdoutput, renumber_sections, &i); | |
43ca9aa6 KR |
1377 | } |
1378 | ||
1379 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1380 | #else | |
6efd877d KR |
1381 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1382 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1383 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1384 | #endif |
6efd877d | 1385 | |
43ca9aa6 KR |
1386 | /* We have two segments. If user gave -R flag, then we must put the |
1387 | data frags into the text segment. Do this before relaxing so | |
1388 | we know to take advantage of -R and make shorter addresses. */ | |
1389 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
def66e24 | 1390 | if (flag_readonly_data_in_text) |
6efd877d | 1391 | { |
b23f6743 | 1392 | merge_data_into_text (); |
6efd877d KR |
1393 | } |
1394 | #endif | |
43ca9aa6 KR |
1395 | |
1396 | #ifdef BFD_ASSEMBLER | |
1397 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1398 | #else | |
b23f6743 | 1399 | relax_and_size_all_segments (); |
43ca9aa6 | 1400 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1401 | |
43ca9aa6 | 1402 | #ifndef BFD_ASSEMBLER |
6efd877d | 1403 | /* |
7f2cb270 KR |
1404 | * |
1405 | * Crawl the symbol chain. | |
1406 | * | |
1407 | * For each symbol whose value depends on a frag, take the address of | |
1408 | * that frag and subsume it into the value of the symbol. | |
1409 | * After this, there is just one way to lookup a symbol value. | |
1410 | * Values are left in their final state for object file emission. | |
1411 | * We adjust the values of 'L' local symbols, even if we do | |
1412 | * not intend to emit them to the object file, because their values | |
1413 | * are needed for fix-ups. | |
1414 | * | |
1415 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1416 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1417 | * | |
1418 | * Count the remaining symbols. | |
1419 | * Assign a symbol number to each symbol. | |
1420 | * Count the number of string-table chars we will emit. | |
1421 | * Put this info into the headers as appropriate. | |
1422 | * | |
1423 | */ | |
6efd877d KR |
1424 | know (zero_address_frag.fr_address == 0); |
1425 | string_byte_count = sizeof (string_byte_count); | |
1426 | ||
1427 | obj_crawl_symbol_chain (&headers); | |
1428 | ||
1429 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1430 | string_byte_count = 0; |
6efd877d KR |
1431 | |
1432 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1433 | ||
1434 | /* | |
7f2cb270 KR |
1435 | * Addresses of frags now reflect addresses we use in the object file. |
1436 | * Symbol values are correct. | |
1437 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1438 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1439 | */ | |
6efd877d KR |
1440 | subseg_change (SEG_TEXT, 0); |
1441 | ||
1442 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1443 | { | |
d4083e29 | 1444 | cvt_frag_to_fill (&headers, SEG_TEXT, fragP); |
6efd877d | 1445 | |
43ca9aa6 KR |
1446 | /* Some assert macros don't work with # directives mixed in. */ |
1447 | #ifndef NDEBUG | |
1448 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1449 | #ifdef OBJ_BOUT |
43ca9aa6 | 1450 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1451 | #endif |
6efd877d | 1452 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1453 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1454 | abort (); | |
1455 | #endif | |
1456 | } | |
1457 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1458 | |
fecd2382 | 1459 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1460 | { |
1461 | struct broken_word *lie; | |
1462 | struct broken_word **prevP; | |
1463 | ||
1464 | prevP = &broken_words; | |
1465 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1466 | if (!lie->added) | |
a39116f1 | 1467 | { |
5ac34ac3 ILT |
1468 | expressionS exp; |
1469 | ||
1470 | exp.X_op = O_subtract; | |
1471 | exp.X_add_symbol = lie->add; | |
1472 | exp.X_op_symbol = lie->sub; | |
1473 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1474 | #ifdef BFD_ASSEMBLER |
d9d6f094 KR |
1475 | #ifdef TC_CONS_FIX_NEW |
1476 | TC_CONS_FIX_NEW (lie->frag, | |
1477 | lie->word_goes_here - lie->frag->fr_literal, | |
1478 | 2, &exp); | |
1479 | #else | |
5ac34ac3 ILT |
1480 | fix_new_exp (lie->frag, |
1481 | lie->word_goes_here - lie->frag->fr_literal, | |
5d0cd0b8 | 1482 | 2, &exp, 0, BFD_RELOC_16); |
d9d6f094 | 1483 | #endif |
43ca9aa6 KR |
1484 | #else |
1485 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1486 | fix_new_exp (lie->frag, |
1487 | lie->word_goes_here - lie->frag->fr_literal, | |
1488 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1489 | #else |
fecd2382 | 1490 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1491 | fix_new_ns32k_exp (lie->frag, |
1492 | lie->word_goes_here - lie->frag->fr_literal, | |
1493 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1494 | #else |
5ac34ac3 ILT |
1495 | fix_new_exp (lie->frag, |
1496 | lie->word_goes_here - lie->frag->fr_literal, | |
1497 | 2, &exp, 0, 0); | |
fecd2382 | 1498 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1499 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1500 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1501 | *prevP = lie->next_broken_word; |
a39116f1 | 1502 | } |
6efd877d KR |
1503 | else |
1504 | prevP = &(lie->next_broken_word); | |
1505 | ||
1506 | for (lie = broken_words; lie;) | |
1507 | { | |
1508 | struct broken_word *untruth; | |
1509 | char *table_ptr; | |
d5364748 KR |
1510 | addressT table_addr; |
1511 | addressT from_addr, to_addr; | |
6efd877d KR |
1512 | int n, m; |
1513 | ||
6efd877d KR |
1514 | fragP = lie->dispfrag; |
1515 | ||
43ca9aa6 | 1516 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1517 | n = 0; |
1518 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1519 | if (untruth->added == 1) | |
1520 | n++; | |
1521 | ||
1522 | table_ptr = lie->dispfrag->fr_opcode; | |
1523 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1524 | /* Create the jump around the long jumps. This is a short |
1525 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1526 | from_addr = table_addr; |
1527 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1528 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1529 | table_ptr += md_short_jump_size; | |
1530 | table_addr += md_short_jump_size; | |
1531 | ||
1532 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1533 | { | |
1534 | if (lie->added == 2) | |
1535 | continue; | |
1536 | /* Patch the jump table */ | |
1537 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1538 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
d9d6f094 KR |
1539 | #ifdef BFD_ASSEMBLER |
1540 | to_addr -= lie->sub->sy_frag->fr_address; | |
1541 | #endif | |
6efd877d KR |
1542 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1543 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1544 | { | |
1545 | if (untruth->use_jump == lie) | |
1546 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1547 | } | |
1548 | ||
1549 | /* Install the long jump */ | |
1550 | /* this is a long jump from table_ptr+0 to the final target */ | |
1551 | from_addr = table_addr; | |
1552 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
d9d6f094 KR |
1553 | #ifdef BFD_ASSEMBLER |
1554 | to_addr += lie->add->sy_frag->fr_address; | |
1555 | #endif | |
6efd877d KR |
1556 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); |
1557 | table_ptr += md_long_jump_size; | |
1558 | table_addr += md_long_jump_size; | |
1559 | } | |
1560 | } | |
1561 | } | |
fecd2382 | 1562 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1563 | |
43ca9aa6 | 1564 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1565 | #ifndef OBJ_VMS |
6efd877d | 1566 | { /* not vms */ |
3f81f3cf | 1567 | char *the_object_file; |
1cf7548e | 1568 | long object_file_size; |
6efd877d | 1569 | /* |
3eb802b5 ILT |
1570 | * Scan every FixS performing fixups. We had to wait until now to do |
1571 | * this because md_convert_frag() may have made some fixSs. | |
1572 | */ | |
6efd877d KR |
1573 | int trsize, drsize; |
1574 | ||
1575 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1576 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1577 | subseg_change (SEG_DATA, 0); |
d5364748 | 1578 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1579 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1580 | ||
1581 | /* FIXME move this stuff into the pre-write-hook */ | |
1582 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1583 | H_SET_ENTRY_POINT (&headers, 0); | |
1584 | ||
1585 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1586 | |
1587 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1588 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1589 | ||
1590 | output_file_create (out_file_name); | |
1591 | ||
1592 | obj_header_append (&next_object_file_charP, &headers); | |
1593 | ||
1594 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1595 | ||
1596 | /* | |
43ca9aa6 KR |
1597 | * Emit code. |
1598 | */ | |
6efd877d KR |
1599 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1600 | { | |
1601 | register long count; | |
1602 | register char *fill_literal; | |
1603 | register long fill_size; | |
1604 | ||
c151fd1e | 1605 | PROGRESS (1); |
6efd877d KR |
1606 | know (fragP->fr_type == rs_fill); |
1607 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1608 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1609 | fill_size = fragP->fr_var; | |
1610 | know (fragP->fr_offset >= 0); | |
1611 | ||
1612 | for (count = fragP->fr_offset; count; count--) | |
1613 | { | |
1614 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1615 | } /* for each */ | |
1616 | ||
1617 | } /* for each code frag. */ | |
1618 | ||
1619 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1620 | ||
1621 | /* | |
43ca9aa6 KR |
1622 | * Emit relocations. |
1623 | */ | |
6efd877d KR |
1624 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
1625 | 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 | 1626 | #ifdef TC_I960 |
6efd877d | 1627 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1628 | * first data fragment, not end of last text fragment: alignment of the |
1629 | * start of the data segment may place a gap between the segments. | |
1630 | */ | |
6efd877d | 1631 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1632 | #else /* TC_I960 */ |
6efd877d | 1633 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1634 | #endif /* TC_I960 */ |
6efd877d KR |
1635 | |
1636 | 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))); | |
1637 | ||
1638 | /* | |
43ca9aa6 KR |
1639 | * Emit line number entries. |
1640 | */ | |
6efd877d KR |
1641 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1642 | 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))); | |
1643 | ||
1644 | /* | |
3eb802b5 ILT |
1645 | * Emit symbols. |
1646 | */ | |
6efd877d KR |
1647 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1648 | 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))); | |
1649 | ||
1650 | /* | |
3eb802b5 ILT |
1651 | * Emit strings. |
1652 | */ | |
6efd877d KR |
1653 | |
1654 | if (string_byte_count > 0) | |
1655 | { | |
1656 | obj_emit_strings (&next_object_file_charP); | |
1657 | } /* only if we have a string table */ | |
1658 | ||
45432836 | 1659 | #ifdef BFD_HEADERS |
6efd877d KR |
1660 | bfd_seek (stdoutput, 0, 0); |
1661 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1662 | #else |
6efd877d KR |
1663 | |
1664 | /* Write the data to the file */ | |
1665 | output_file_append (the_object_file, object_file_size, out_file_name); | |
3f81f3cf | 1666 | free (the_object_file); |
45432836 | 1667 | #endif |
6efd877d | 1668 | } /* non vms output */ |
3f81f3cf | 1669 | #else /* OBJ_VMS */ |
6efd877d | 1670 | /* |
3eb802b5 ILT |
1671 | * Now do the VMS-dependent part of writing the object file |
1672 | */ | |
8e86815b | 1673 | vms_write_object_file (H_GET_TEXT_SIZE (&headers), |
85825401 ILT |
1674 | H_GET_DATA_SIZE (&headers), |
1675 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1676 | text_frag_root, data_frag_root); |
3f81f3cf | 1677 | #endif /* OBJ_VMS */ |
43ca9aa6 | 1678 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1679 | |
4acf8c78 KR |
1680 | /* Resolve symbol values. This needs to be done before processing |
1681 | the relocations. */ | |
1682 | if (symbol_rootP) | |
1683 | { | |
1684 | symbolS *symp; | |
1685 | ||
1686 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1687 | if (!symp->sy_resolved) | |
1688 | resolve_symbol_value (symp); | |
1689 | } | |
1690 | ||
c151fd1e KR |
1691 | PROGRESS (1); |
1692 | ||
5d0cd0b8 ILT |
1693 | #ifdef tc_frob_file_before_adjust |
1694 | tc_frob_file_before_adjust (); | |
1695 | #endif | |
1696 | #ifdef obj_frob_file_before_adjust | |
1697 | obj_frob_file_before_adjust (); | |
1698 | #endif | |
1699 | ||
d5364748 KR |
1700 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1701 | ||
43ca9aa6 KR |
1702 | /* Set up symbol table, and write it out. */ |
1703 | if (symbol_rootP) | |
1704 | { | |
43ca9aa6 KR |
1705 | symbolS *symp; |
1706 | ||
1707 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1708 | { | |
262b22cd | 1709 | int punt = 0; |
c151fd1e KR |
1710 | const char *name; |
1711 | ||
1356d77d ILT |
1712 | if (symp->sy_mri_common) |
1713 | { | |
1714 | if (S_IS_EXTERNAL (symp)) | |
1715 | as_bad ("%s: global symbols not supported in common sections", | |
1716 | S_GET_NAME (symp)); | |
1717 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1718 | continue; | |
1719 | } | |
1720 | ||
c151fd1e KR |
1721 | name = S_GET_NAME (symp); |
1722 | if (name) | |
1723 | { | |
a2a5a4fa | 1724 | const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); |
c151fd1e KR |
1725 | /* They only differ if `name' is a fb or dollar local |
1726 | label name. */ | |
1727 | if (name2 != name && ! S_IS_DEFINED (symp)) | |
1728 | as_bad ("local label %s is not defined", name2); | |
1729 | } | |
262b22cd | 1730 | |
4acf8c78 KR |
1731 | /* Do it again, because adjust_reloc_syms might introduce |
1732 | more symbols. They'll probably only be section symbols, | |
1733 | but they'll still need to have the values computed. */ | |
5868b1fe ILT |
1734 | if (! symp->sy_resolved) |
1735 | { | |
5ac34ac3 | 1736 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1737 | { |
1738 | /* This is the normal case; skip the call. */ | |
1739 | S_SET_VALUE (symp, | |
1740 | (S_GET_VALUE (symp) | |
1741 | + symp->sy_frag->fr_address)); | |
1742 | symp->sy_resolved = 1; | |
1743 | } | |
1744 | else | |
1745 | resolve_symbol_value (symp); | |
1746 | } | |
1747 | ||
a043f579 ILT |
1748 | /* Skip symbols which were equated to undefined or common |
1749 | symbols. */ | |
1750 | if (symp->sy_value.X_op == O_symbol | |
1751 | && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp))) | |
1752 | { | |
1753 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1754 | continue; | |
1755 | } | |
1756 | ||
43ca9aa6 KR |
1757 | /* So far, common symbols have been treated like undefined symbols. |
1758 | Put them in the common section now. */ | |
1759 | if (S_IS_DEFINED (symp) == 0 | |
1760 | && S_GET_VALUE (symp) != 0) | |
d9d6f094 | 1761 | S_SET_SEGMENT (symp, bfd_com_section_ptr); |
43ca9aa6 | 1762 | #if 0 |
5868b1fe | 1763 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1764 | S_GET_NAME (symp), symp, |
1765 | S_GET_VALUE (symp), | |
d5364748 | 1766 | symp->bsym->flags, |
43ca9aa6 KR |
1767 | segment_name (symp->bsym->section)); |
1768 | #endif | |
335d35c8 | 1769 | |
80aab579 | 1770 | #ifdef obj_frob_symbol |
262b22cd | 1771 | obj_frob_symbol (symp, punt); |
43ca9aa6 KR |
1772 | #endif |
1773 | #ifdef tc_frob_symbol | |
262b22cd | 1774 | if (! punt || symp->sy_used_in_reloc) |
335d35c8 | 1775 | tc_frob_symbol (symp, punt); |
43ca9aa6 | 1776 | #endif |
80aab579 | 1777 | |
262b22cd ILT |
1778 | /* If we don't want to keep this symbol, splice it out of |
1779 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1780 | want section symbols. Otherwise, we skip local symbols | |
1781 | and symbols that the frob_symbol macros told us to punt, | |
1782 | but we keep such symbols if they are used in relocs. */ | |
1783 | if ((! EMIT_SECTION_SYMBOLS | |
1784 | && (symp->bsym->flags & BSF_SECTION_SYM) != 0) | |
1cf7548e KR |
1785 | /* Note that S_IS_EXTERN and S_IS_LOCAL are not always |
1786 | opposites. Sometimes the former checks flags and the | |
1787 | latter examines the name... */ | |
1788 | || (!S_IS_EXTERN (symp) | |
1789 | && (S_IS_LOCAL (symp) || punt) | |
262b22cd | 1790 | && ! symp->sy_used_in_reloc)) |
43ca9aa6 | 1791 | { |
1cf7548e KR |
1792 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); |
1793 | /* After symbol_remove, symbol_next(symp) still returns | |
1794 | the one that came after it in the chain. So we don't | |
1795 | need to do any extra cleanup work here. */ | |
262b22cd | 1796 | |
262b22cd | 1797 | continue; |
43ca9aa6 | 1798 | } |
85051959 | 1799 | |
80aab579 ILT |
1800 | /* Make sure we really got a value for the symbol. */ |
1801 | if (! symp->sy_resolved) | |
1802 | { | |
1803 | as_bad ("can't resolve value for symbol \"%s\"", | |
1804 | S_GET_NAME (symp)); | |
1805 | symp->sy_resolved = 1; | |
1806 | } | |
1807 | ||
85051959 ILT |
1808 | /* Set the value into the BFD symbol. Up til now the value |
1809 | has only been kept in the gas symbolS struct. */ | |
1810 | symp->bsym->value = S_GET_VALUE (symp); | |
43ca9aa6 KR |
1811 | } |
1812 | } | |
1813 | ||
c151fd1e KR |
1814 | PROGRESS (1); |
1815 | ||
def66e24 DM |
1816 | /* Now do any format-specific adjustments to the symbol table, such |
1817 | as adding file symbols. */ | |
a043f579 ILT |
1818 | #ifdef tc_adjust_symtab |
1819 | tc_adjust_symtab (); | |
1820 | #endif | |
def66e24 DM |
1821 | #ifdef obj_adjust_symtab |
1822 | obj_adjust_symtab (); | |
1823 | #endif | |
1824 | ||
1825 | /* Now that all the sizes are known, and contents correct, we can | |
1826 | start writing to the file. */ | |
1827 | set_symtab (); | |
1828 | ||
1cf7548e KR |
1829 | /* If *_frob_file changes the symbol value at this point, it is |
1830 | responsible for moving the changed value into symp->bsym->value | |
1831 | as well. Hopefully all symbol value changing can be done in | |
1832 | *_frob_symbol. */ | |
c79e67a3 KR |
1833 | #ifdef tc_frob_file |
1834 | tc_frob_file (); | |
1835 | #endif | |
f2f7d044 ILT |
1836 | #ifdef obj_frob_file |
1837 | obj_frob_file (); | |
1838 | #endif | |
1839 | ||
8d6c34a1 KR |
1840 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1841 | ||
5d0cd0b8 ILT |
1842 | #ifdef tc_frob_file_after_relocs |
1843 | tc_frob_file_after_relocs (); | |
1844 | #endif | |
1845 | #ifdef obj_frob_file_after_relocs | |
1846 | obj_frob_file_after_relocs (); | |
1847 | #endif | |
1848 | ||
43ca9aa6 | 1849 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1850 | #endif /* BFD_ASSEMBLER */ |
1851 | } | |
d5364748 | 1852 | #endif /* ! BFD */ |
fecd2382 RP |
1853 | |
1854 | /* | |
1855 | * relax_segment() | |
1856 | * | |
1857 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1858 | * values. | |
1859 | * | |
1860 | * Relax the frags. | |
1861 | * | |
1862 | * After this, all frags in this segment have addresses that are correct | |
1863 | * within the segment. Since segments live in different file addresses, | |
1864 | * these frag addresses may not be the same as final object-file addresses. | |
1865 | */ | |
45432836 | 1866 | |
793f9558 | 1867 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 | 1868 | |
d5364748 | 1869 | /* Subroutines of relax_segment. */ |
5d0cd0b8 | 1870 | static int |
43ca9aa6 KR |
1871 | is_dnrange (f1, f2) |
1872 | struct frag *f1; | |
1873 | struct frag *f2; | |
1874 | { | |
1875 | for (; f1; f1 = f1->fr_next) | |
1876 | if (f1->fr_next == f2) | |
1877 | return 1; | |
1878 | return 0; | |
1879 | } | |
1880 | ||
f7ab9441 DE |
1881 | /* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */ |
1882 | ||
1883 | long | |
1884 | relax_frag (fragP, stretch) | |
1885 | fragS *fragP; | |
1886 | long stretch; | |
1887 | { | |
1888 | const relax_typeS *this_type; | |
1889 | const relax_typeS *start_type; | |
1890 | relax_substateT next_state; | |
1891 | relax_substateT this_state; | |
1892 | long aim, target, growth; | |
1893 | symbolS *symbolP = fragP->fr_symbol; | |
1894 | long offset = fragP->fr_offset; | |
1895 | /* Recompute was_address by undoing "+= stretch" done by relax_segment. */ | |
1896 | unsigned long was_address = fragP->fr_address - stretch; | |
1897 | unsigned long address = fragP->fr_address; | |
1898 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; | |
1899 | ||
1900 | this_state = fragP->fr_subtype; | |
1901 | start_type = this_type = table + this_state; | |
1902 | target = offset; | |
1903 | ||
1904 | if (symbolP) | |
1905 | { | |
1906 | #ifndef DIFF_EXPR_OK | |
1907 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) | |
1908 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1909 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1910 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
1911 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
1912 | #endif | |
1913 | know (symbolP->sy_frag); | |
1914 | #endif | |
1915 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) | |
1916 | || symbolP->sy_frag == &zero_address_frag); | |
1917 | target += | |
1918 | S_GET_VALUE (symbolP) | |
1919 | + symbolP->sy_frag->fr_address; | |
1920 | ||
1921 | /* If frag has yet to be reached on this pass, | |
1922 | assume it will move by STRETCH just as we did. | |
1923 | If this is not so, it will be because some frag | |
1924 | between grows, and that will force another pass. | |
1925 | ||
1926 | Beware zero-length frags. | |
1927 | ||
1928 | There should be a faster way to do this. */ | |
1929 | ||
1930 | if (symbolP->sy_frag->fr_address >= was_address | |
1931 | && is_dnrange (fragP, symbolP->sy_frag)) | |
1932 | { | |
1933 | target += stretch; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | aim = target - address - fragP->fr_fix; | |
1938 | #ifdef TC_PCREL_ADJUST | |
1939 | /* Currently only the ns32k family needs this */ | |
1940 | aim += TC_PCREL_ADJUST(fragP); | |
1941 | /*#else*/ | |
1942 | /* This machine doesn't want to use pcrel_adjust. | |
1943 | In that case, pcrel_adjust should be zero. */ | |
1944 | /* assert (fragP->fr_pcrel_adjust == 0);*/ | |
1945 | #endif | |
1946 | #ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */ | |
1947 | md_prepare_relax_scan (fragP, address, aim, this_state, this_type); | |
1948 | #endif | |
1949 | ||
1950 | if (aim < 0) | |
1951 | { | |
1952 | /* Look backwards. */ | |
1953 | for (next_state = this_type->rlx_more; next_state;) | |
1954 | if (aim >= this_type->rlx_backward) | |
1955 | next_state = 0; | |
1956 | else | |
1957 | { | |
1958 | /* Grow to next state. */ | |
1959 | this_state = next_state; | |
1960 | this_type = table + this_state; | |
1961 | next_state = this_type->rlx_more; | |
1962 | } | |
1963 | } | |
1964 | else | |
1965 | { | |
1966 | /* Look forwards. */ | |
1967 | for (next_state = this_type->rlx_more; next_state;) | |
1968 | if (aim <= this_type->rlx_forward) | |
1969 | next_state = 0; | |
1970 | else | |
1971 | { | |
1972 | /* Grow to next state. */ | |
1973 | this_state = next_state; | |
1974 | this_type = table + this_state; | |
1975 | next_state = this_type->rlx_more; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | growth = this_type->rlx_length - start_type->rlx_length; | |
1980 | if (growth != 0) | |
1981 | fragP->fr_subtype = this_state; | |
1982 | return growth; | |
1983 | } | |
1984 | ||
793f9558 | 1985 | #endif /* defined (TC_GENERIC_RELAX_TABLE) */ |
a58374d7 | 1986 | |
43ca9aa6 | 1987 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1988 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1989 | static relax_addressT |
1990 | relax_align (address, alignment) | |
1991 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1992 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1993 | { |
1994 | relax_addressT mask; | |
1995 | relax_addressT new_address; | |
1996 | ||
1997 | mask = ~((~0) << alignment); | |
1998 | new_address = (address + mask) & (~mask); | |
d4083e29 | 1999 | #ifdef LINKER_RELAXING_SHRINKS_ONLY |
43ca9aa6 KR |
2000 | if (linkrelax) |
2001 | /* We must provide lots of padding, so the linker can discard it | |
2002 | when needed. The linker will not add extra space, ever. */ | |
2003 | new_address += (1 << alignment); | |
d4083e29 | 2004 | #endif |
43ca9aa6 KR |
2005 | return (new_address - address); |
2006 | } | |
45432836 | 2007 | |
5d0cd0b8 | 2008 | void |
6efd877d KR |
2009 | relax_segment (segment_frag_root, segment) |
2010 | struct frag *segment_frag_root; | |
43ca9aa6 | 2011 | segT segment; |
fecd2382 | 2012 | { |
6efd877d KR |
2013 | register struct frag *fragP; |
2014 | register relax_addressT address; | |
43ca9aa6 | 2015 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 2016 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 2017 | #endif |
6efd877d KR |
2018 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
2019 | subseg_change (segment, 0); | |
2020 | ||
7f2cb270 KR |
2021 | /* For each frag in segment: count and store (a 1st guess of) |
2022 | fr_address. */ | |
6efd877d KR |
2023 | address = 0; |
2024 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
2025 | { | |
2026 | fragP->fr_address = address; | |
2027 | address += fragP->fr_fix; | |
2028 | ||
2029 | switch (fragP->fr_type) | |
2030 | { | |
2031 | case rs_fill: | |
2032 | address += fragP->fr_offset * fragP->fr_var; | |
2033 | break; | |
2034 | ||
2035 | case rs_align: | |
cd3b81bd | 2036 | case rs_align_code: |
98c6bbbe | 2037 | { |
590c50d8 ILT |
2038 | addressT offset = relax_align (address, (int) fragP->fr_offset); |
2039 | ||
2040 | if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype) | |
2041 | offset = 0; | |
2042 | ||
98c6bbbe KR |
2043 | if (offset % fragP->fr_var != 0) |
2044 | { | |
590c50d8 ILT |
2045 | as_bad ("alignment padding (%lu bytes) not a multiple of %ld", |
2046 | (unsigned long) offset, (long) fragP->fr_var); | |
98c6bbbe KR |
2047 | offset -= (offset % fragP->fr_var); |
2048 | } | |
590c50d8 | 2049 | |
98c6bbbe KR |
2050 | address += offset; |
2051 | } | |
6efd877d KR |
2052 | break; |
2053 | ||
2054 | case rs_org: | |
cd3b81bd | 2055 | case rs_space: |
7f2cb270 | 2056 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
2057 | break; |
2058 | ||
2059 | case rs_machine_dependent: | |
2060 | address += md_estimate_size_before_relax (fragP, segment); | |
2061 | break; | |
2062 | ||
fecd2382 | 2063 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
2064 | /* Broken words don't concern us yet */ |
2065 | case rs_broken_word: | |
2066 | break; | |
fecd2382 | 2067 | #endif |
6efd877d KR |
2068 | |
2069 | default: | |
2070 | BAD_CASE (fragP->fr_type); | |
2071 | break; | |
2072 | } /* switch(fr_type) */ | |
2073 | } /* for each frag in the segment */ | |
2074 | ||
7f2cb270 | 2075 | /* Do relax(). */ |
6efd877d | 2076 | { |
7f2cb270 | 2077 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
2078 | /* Cumulative number of addresses we have */ |
2079 | /* relaxed this pass. */ | |
2080 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
2081 | long stretched; /* Have we stretched on this pass? */ |
2082 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
2083 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
2084 | we could be scrod. */ | |
6efd877d KR |
2085 | |
2086 | do | |
2087 | { | |
2088 | stretch = stretched = 0; | |
2089 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
2090 | { | |
7f2cb270 | 2091 | long growth = 0; |
590c50d8 ILT |
2092 | addressT was_address; |
2093 | offsetT offset; | |
7f2cb270 | 2094 | symbolS *symbolP; |
6efd877d KR |
2095 | |
2096 | was_address = fragP->fr_address; | |
2097 | address = fragP->fr_address += stretch; | |
2098 | symbolP = fragP->fr_symbol; | |
2099 | offset = fragP->fr_offset; | |
6efd877d KR |
2100 | |
2101 | switch (fragP->fr_type) | |
2102 | { | |
2103 | case rs_fill: /* .fill never relaxes. */ | |
2104 | growth = 0; | |
2105 | break; | |
2106 | ||
fecd2382 | 2107 | #ifndef WORKING_DOT_WORD |
6efd877d | 2108 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
2109 | for it I do not want to write it. I do not want to have |
2110 | anything to do with it. This is not the proper way to | |
2111 | implement this misfeature. */ | |
6efd877d KR |
2112 | case rs_broken_word: |
2113 | { | |
2114 | struct broken_word *lie; | |
2115 | struct broken_word *untruth; | |
6efd877d KR |
2116 | |
2117 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
2118 | in the symbol slot). Still, this whole chunk of |
2119 | code is ugly, and I don't feel like doing anything | |
2120 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
2121 | growth = 0; |
2122 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
2123 | lie && lie->dispfrag == fragP; | |
2124 | lie = lie->next_broken_word) | |
2125 | { | |
2126 | ||
2127 | if (lie->added) | |
2128 | continue; | |
2129 | ||
7f2cb270 KR |
2130 | offset = (lie->add->sy_frag->fr_address |
2131 | + S_GET_VALUE (lie->add) | |
2132 | + lie->addnum | |
2133 | - (lie->sub->sy_frag->fr_address | |
2134 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
2135 | if (offset <= -32768 || offset >= 32767) |
2136 | { | |
def66e24 | 2137 | if (flag_warn_displacement) |
d5364748 KR |
2138 | { |
2139 | char buf[50]; | |
80aab579 | 2140 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
2141 | as_warn (".word %s-%s+%s didn't fit", |
2142 | S_GET_NAME (lie->add), | |
2143 | S_GET_NAME (lie->sub), | |
2144 | buf); | |
2145 | } | |
6efd877d KR |
2146 | lie->added = 1; |
2147 | if (fragP->fr_subtype == 0) | |
2148 | { | |
2149 | fragP->fr_subtype++; | |
2150 | growth += md_short_jump_size; | |
2151 | } | |
7f2cb270 KR |
2152 | for (untruth = lie->next_broken_word; |
2153 | untruth && untruth->dispfrag == lie->dispfrag; | |
2154 | untruth = untruth->next_broken_word) | |
6efd877d KR |
2155 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
2156 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
2157 | { | |
2158 | untruth->added = 2; | |
2159 | untruth->use_jump = lie; | |
2160 | } | |
2161 | growth += md_long_jump_size; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | break; | |
2166 | } /* case rs_broken_word */ | |
fecd2382 | 2167 | #endif |
6efd877d | 2168 | case rs_align: |
cd3b81bd | 2169 | case rs_align_code: |
590c50d8 ILT |
2170 | { |
2171 | addressT oldoff, newoff; | |
2172 | ||
2173 | oldoff = relax_align (was_address + fragP->fr_fix, | |
2174 | (int) offset); | |
2175 | newoff = relax_align (address + fragP->fr_fix, | |
2176 | (int) offset); | |
2177 | ||
2178 | if (fragP->fr_subtype != 0) | |
2179 | { | |
2180 | if (oldoff > fragP->fr_subtype) | |
2181 | oldoff = 0; | |
2182 | if (newoff > fragP->fr_subtype) | |
2183 | newoff = 0; | |
2184 | } | |
2185 | ||
2186 | growth = newoff - oldoff; | |
2187 | } | |
6efd877d KR |
2188 | break; |
2189 | ||
2190 | case rs_org: | |
f7ab9441 DE |
2191 | { |
2192 | long target = offset; | |
2193 | long after; | |
6efd877d | 2194 | |
f7ab9441 DE |
2195 | if (symbolP) |
2196 | { | |
43ca9aa6 | 2197 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
f7ab9441 DE |
2198 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
2199 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2200 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
2201 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
2202 | know (symbolP->sy_frag); | |
2203 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2204 | || (symbolP->sy_frag == &zero_address_frag)); | |
2205 | #endif | |
2206 | target += S_GET_VALUE (symbolP) | |
2207 | + symbolP->sy_frag->fr_address; | |
2208 | } /* if we have a symbol */ | |
6efd877d | 2209 | |
f7ab9441 DE |
2210 | know (fragP->fr_next); |
2211 | after = fragP->fr_next->fr_address; | |
2212 | growth = target - after; | |
2213 | if (growth < 0) | |
2214 | { | |
2215 | /* Growth may be negative, but variable part of frag | |
2216 | cannot have fewer than 0 chars. That is, we can't | |
2217 | .org backwards. */ | |
2218 | as_bad ("attempt to .org backwards ignored"); | |
2219 | growth = 0; | |
2220 | } | |
2221 | ||
2222 | growth -= stretch; /* This is an absolute growth factor */ | |
2223 | break; | |
2224 | } | |
6efd877d | 2225 | |
cd3b81bd KR |
2226 | case rs_space: |
2227 | if (symbolP) | |
2228 | { | |
2229 | growth = S_GET_VALUE (symbolP); | |
a75abb6f ILT |
2230 | if (symbolP->sy_frag != &zero_address_frag |
2231 | || S_IS_COMMON (symbolP) | |
2232 | || ! S_IS_DEFINED (symbolP)) | |
2233 | as_bad_where (fragP->fr_file, fragP->fr_line, | |
2234 | ".space specifies non-absolute value"); | |
cd3b81bd KR |
2235 | fragP->fr_symbol = 0; |
2236 | if (growth < 0) | |
2237 | { | |
2238 | as_warn (".space or .fill with negative value, ignored"); | |
2239 | growth = 0; | |
2240 | } | |
2241 | } | |
2242 | else | |
2243 | growth = 0; | |
2244 | break; | |
2245 | ||
6efd877d | 2246 | case rs_machine_dependent: |
a58374d7 ILT |
2247 | #ifdef md_relax_frag |
2248 | growth = md_relax_frag (fragP, stretch); | |
2249 | #else | |
c151fd1e | 2250 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 | 2251 | /* The default way to relax a frag is to look through |
f7ab9441 DE |
2252 | TC_GENERIC_RELAX_TABLE. */ |
2253 | growth = relax_frag (fragP, stretch); | |
c151fd1e | 2254 | #endif /* TC_GENERIC_RELAX_TABLE */ |
a58374d7 | 2255 | #endif |
7f2cb270 | 2256 | break; |
6efd877d KR |
2257 | |
2258 | default: | |
2259 | BAD_CASE (fragP->fr_type); | |
2260 | break; | |
2261 | } | |
2262 | if (growth) | |
2263 | { | |
2264 | stretch += growth; | |
2265 | stretched++; | |
2266 | } | |
2267 | } /* For each frag in the segment. */ | |
2268 | } | |
2269 | while (stretched); /* Until nothing further to relax. */ | |
2270 | } /* do_relax */ | |
2271 | ||
2272 | /* | |
7f2cb270 KR |
2273 | * We now have valid fr_address'es for each frag. |
2274 | */ | |
6efd877d KR |
2275 | |
2276 | /* | |
7f2cb270 KR |
2277 | * All fr_address's are correct, relative to their own segment. |
2278 | * We have made all the fixS we will ever make. | |
2279 | */ | |
6efd877d | 2280 | } /* relax_segment() */ |
fecd2382 | 2281 | |
3f81f3cf | 2282 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
80aab579 | 2283 | |
d9d6f094 KR |
2284 | #ifndef TC_RELOC_RTSYM_LOC_FIXUP |
2285 | #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1) | |
2286 | #endif | |
2287 | ||
fecd2382 | 2288 | /* fixup_segment() |
6efd877d | 2289 | |
fecd2382 RP |
2290 | Go through all the fixS's in a segment and see which ones can be |
2291 | handled now. (These consist of fixS where we have since discovered | |
2292 | the value of a symbol, or the address of the frag involved.) | |
2293 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 2294 | |
fecd2382 RP |
2295 | Result is a count of how many relocation structs will be needed to |
2296 | handle the remaining fixS's that we couldn't completely handle here. | |
2297 | These will be output later by emit_relocations(). */ | |
2298 | ||
09952cd9 | 2299 | static long |
6efd877d | 2300 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 2301 | register fixS *fixP; |
6efd877d | 2302 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 2303 | { |
f5c32424 KR |
2304 | long seg_reloc_count = 0; |
2305 | symbolS *add_symbolP; | |
2306 | symbolS *sub_symbolP; | |
d5364748 | 2307 | valueT add_number; |
f5c32424 KR |
2308 | int size; |
2309 | char *place; | |
2310 | long where; | |
a55774a1 | 2311 | int pcrel, plt; |
f5c32424 KR |
2312 | fragS *fragP; |
2313 | segT add_symbol_segment = absolute_section; | |
5d0cd0b8 | 2314 | |
f5c32424 KR |
2315 | /* If the linker is doing the relaxing, we must not do any fixups. |
2316 | ||
2317 | Well, strictly speaking that's not true -- we could do any that are | |
2318 | PC-relative and don't cross regions that could change size. And for the | |
2319 | i960 (the only machine for which we've got a relaxing linker right now), | |
2320 | we might be able to turn callx/callj into bal anyways in cases where we | |
2321 | know the maximum displacement. */ | |
6efd877d | 2322 | if (linkrelax) |
f5c32424 KR |
2323 | { |
2324 | for (; fixP; fixP = fixP->fx_next) | |
2325 | seg_reloc_count++; | |
2326 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2327 | return seg_reloc_count; | |
2328 | } | |
6efd877d | 2329 | |
f5c32424 KR |
2330 | for (; fixP; fixP = fixP->fx_next) |
2331 | { | |
a55774a1 KR |
2332 | #ifdef DEBUG5 |
2333 | fprintf (stderr, "\nprocessing fixup:\n"); | |
2334 | print_fixup (fixP); | |
2335 | #endif | |
2336 | ||
f5c32424 KR |
2337 | fragP = fixP->fx_frag; |
2338 | know (fragP); | |
2339 | where = fixP->fx_where; | |
2340 | place = fragP->fr_literal + where; | |
2341 | size = fixP->fx_size; | |
2342 | add_symbolP = fixP->fx_addsy; | |
2343 | #ifdef TC_VALIDATE_FIX | |
2344 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 2345 | #endif |
f5c32424 KR |
2346 | sub_symbolP = fixP->fx_subsy; |
2347 | add_number = fixP->fx_offset; | |
2348 | pcrel = fixP->fx_pcrel; | |
a55774a1 KR |
2349 | plt = fixP->fx_plt; |
2350 | ||
e120d9fb ILT |
2351 | if (add_symbolP != NULL |
2352 | && add_symbolP->sy_mri_common) | |
1356d77d ILT |
2353 | { |
2354 | know (add_symbolP->sy_value.X_op == O_symbol); | |
2355 | add_number += S_GET_VALUE (add_symbolP); | |
2356 | fixP->fx_offset = add_number; | |
2357 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
2358 | } | |
2359 | ||
f5c32424 KR |
2360 | if (add_symbolP) |
2361 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
5d0cd0b8 | 2362 | |
f5c32424 KR |
2363 | if (sub_symbolP) |
2364 | { | |
f7da4a99 | 2365 | resolve_symbol_value (sub_symbolP); |
96fe71e1 | 2366 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) |
f5c32424 | 2367 | { |
96fe71e1 MM |
2368 | if (add_symbolP != NULL) |
2369 | { | |
2370 | add_number += S_GET_VALUE (add_symbolP); | |
2371 | add_symbolP = NULL; | |
2372 | fixP->fx_addsy = NULL; | |
2373 | } | |
2374 | ||
2375 | /* It's just -sym */ | |
f5c32424 | 2376 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) |
96fe71e1 MM |
2377 | { |
2378 | add_number -= S_GET_VALUE (sub_symbolP); | |
2379 | fixP->fx_subsy = NULL; | |
2380 | } | |
f5c32424 KR |
2381 | else if (pcrel |
2382 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
2383 | { | |
2384 | /* Should try converting to a constant. */ | |
2385 | goto bad_sub_reloc; | |
2386 | } | |
2387 | else | |
2388 | bad_sub_reloc: | |
741f4d66 KR |
2389 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2390 | "Negative of non-absolute symbol %s", | |
2391 | S_GET_NAME (sub_symbolP)); | |
f5c32424 | 2392 | } |
96fe71e1 MM |
2393 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment |
2394 | && SEG_NORMAL (add_symbol_segment)) | |
f5c32424 KR |
2395 | { |
2396 | /* Difference of 2 symbols from same segment. | |
2397 | Can't make difference of 2 undefineds: 'value' means | |
2398 | something different for N_UNDF. */ | |
fecd2382 | 2399 | #ifdef TC_I960 |
f5c32424 KR |
2400 | /* Makes no sense to use the difference of 2 arbitrary symbols |
2401 | as the target of a call instruction. */ | |
2402 | if (fixP->fx_tcbit) | |
741f4d66 KR |
2403 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2404 | "callj to difference of 2 symbols"); | |
6efd877d | 2405 | #endif /* TC_I960 */ |
f5c32424 KR |
2406 | add_number += S_GET_VALUE (add_symbolP) - |
2407 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 2408 | |
f5c32424 | 2409 | add_symbolP = NULL; |
c151fd1e | 2410 | pcrel = 0; /* No further pcrel processing. */ |
335d35c8 | 2411 | |
f5c32424 KR |
2412 | /* Let the target machine make the final determination |
2413 | as to whether or not a relocation will be needed to | |
2414 | handle this fixup. */ | |
96fe71e1 | 2415 | if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) |
98c6bbbe | 2416 | { |
c151fd1e | 2417 | fixP->fx_pcrel = 0; |
98c6bbbe | 2418 | fixP->fx_addsy = NULL; |
96fe71e1 | 2419 | fixP->fx_subsy = NULL; |
98c6bbbe | 2420 | } |
f5c32424 KR |
2421 | } |
2422 | else | |
2423 | { | |
2424 | /* Different segments in subtraction. */ | |
2425 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
2426 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
2427 | ||
2428 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
2429 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 2430 | |
80aab579 | 2431 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
2432 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
2433 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
2434 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
2435 | pc-relative mode. */ | |
2436 | && pcrel | |
0f894895 | 2437 | #endif |
f5c32424 KR |
2438 | ) |
2439 | { | |
2440 | /* Make it pc-relative. */ | |
96fe71e1 | 2441 | add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) |
f5c32424 KR |
2442 | - S_GET_VALUE (sub_symbolP)); |
2443 | pcrel = 1; | |
2444 | fixP->fx_pcrel = 1; | |
2445 | sub_symbolP = 0; | |
2446 | fixP->fx_subsy = 0; | |
2447 | } | |
98c6bbbe | 2448 | #endif |
d4083e29 KR |
2449 | #ifdef UNDEFINED_DIFFERENCE_OK |
2450 | /* The PA needs this for PIC code generation. We basically | |
2451 | don't want to do anything if we have the difference of two | |
2452 | symbols at this point. */ | |
2453 | else if (1) | |
2454 | { | |
2455 | /* Leave it alone. */ | |
2456 | } | |
2457 | #endif | |
98c6bbbe KR |
2458 | #ifdef BFD_ASSEMBLER |
2459 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
2460 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
2461 | { | |
2462 | /* Leave it alone. */ | |
2463 | } | |
80aab579 | 2464 | #endif |
f5c32424 KR |
2465 | else |
2466 | { | |
2467 | char buf[50]; | |
2468 | sprint_value (buf, fragP->fr_address + where); | |
741f4d66 KR |
2469 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2470 | "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
2471 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
2472 | S_GET_NAME (sub_symbolP), buf); | |
f5c32424 KR |
2473 | } |
2474 | } | |
2475 | } | |
6efd877d | 2476 | |
f5c32424 KR |
2477 | if (add_symbolP) |
2478 | { | |
a55774a1 | 2479 | if (add_symbol_segment == this_segment_type && pcrel && !plt |
5767cfb7 | 2480 | && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) |
f5c32424 KR |
2481 | { |
2482 | /* | |
2483 | * This fixup was made when the symbol's segment was | |
2484 | * SEG_UNKNOWN, but it is now in the local segment. | |
2485 | * So we know how to do the address without relocation. | |
2486 | */ | |
fecd2382 | 2487 | #ifdef TC_I960 |
f5c32424 KR |
2488 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
2489 | 'bal', in which cases it modifies *fixP as appropriate. | |
2490 | In the case of a 'calls', no further work is required, | |
2491 | and *fixP has been set up to make the rest of the code | |
2492 | below a no-op. */ | |
2493 | reloc_callj (fixP); | |
fecd2382 | 2494 | #endif /* TC_I960 */ |
6efd877d | 2495 | |
f5c32424 | 2496 | add_number += S_GET_VALUE (add_symbolP); |
96fe71e1 | 2497 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 | 2498 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ |
5d0cd0b8 | 2499 | |
f5c32424 KR |
2500 | /* Let the target machine make the final determination |
2501 | as to whether or not a relocation will be needed to | |
2502 | handle this fixup. */ | |
2503 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
2504 | { |
2505 | fixP->fx_pcrel = 0; | |
2506 | fixP->fx_addsy = NULL; | |
2507 | } | |
f5c32424 KR |
2508 | } |
2509 | else | |
2510 | { | |
00a69b89 ILT |
2511 | if (add_symbol_segment == absolute_section |
2512 | && ! pcrel) | |
f5c32424 | 2513 | { |
fecd2382 | 2514 | #ifdef TC_I960 |
f5c32424 KR |
2515 | /* See comment about reloc_callj() above. */ |
2516 | reloc_callj (fixP); | |
fecd2382 | 2517 | #endif /* TC_I960 */ |
f5c32424 KR |
2518 | add_number += S_GET_VALUE (add_symbolP); |
2519 | ||
2520 | /* Let the target machine make the final determination | |
2521 | as to whether or not a relocation will be needed to | |
2522 | handle this fixup. */ | |
5d0cd0b8 | 2523 | |
f00f5ecd | 2524 | if (!TC_FORCE_RELOCATION (fixP)) |
e67a0640 KR |
2525 | { |
2526 | fixP->fx_addsy = NULL; | |
2527 | add_symbolP = NULL; | |
2528 | } | |
f5c32424 KR |
2529 | } |
2530 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 2531 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2532 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 2533 | #endif |
f5c32424 KR |
2534 | ) |
2535 | { | |
fecd2382 | 2536 | #ifdef TC_I960 |
f5c32424 KR |
2537 | if ((int) fixP->fx_bit_fixP == 13) |
2538 | { | |
2539 | /* This is a COBR instruction. They have only a | |
2540 | * 13-bit displacement and are only to be used | |
2541 | * for local branches: flag as error, don't generate | |
2542 | * relocation. | |
2543 | */ | |
741f4d66 KR |
2544 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2545 | "can't use COBR format with external label"); | |
98c6bbbe KR |
2546 | fixP->fx_addsy = NULL; |
2547 | fixP->fx_done = 1; | |
f5c32424 KR |
2548 | continue; |
2549 | } /* COBR */ | |
fecd2382 | 2550 | #endif /* TC_I960 */ |
5d0cd0b8 | 2551 | |
fecd2382 | 2552 | #ifdef OBJ_COFF |
c593cf41 | 2553 | #ifdef TE_I386AIX |
f5c32424 KR |
2554 | if (S_IS_COMMON (add_symbolP)) |
2555 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2556 | #endif /* TE_I386AIX */ |
fecd2382 | 2557 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2558 | ++seg_reloc_count; |
2559 | } | |
2560 | else | |
2561 | { | |
2562 | seg_reloc_count++; | |
00a69b89 ILT |
2563 | /* start-sanitize-v850 */ |
2564 | #if !(defined (TC_V850) && defined (OBJ_ELF)) | |
2565 | /* end-sanitize-v850 */ | |
a043f579 | 2566 | #if !(defined (TC_M68K) && defined (OBJ_ELF)) |
a55774a1 | 2567 | #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) |
f5c32424 | 2568 | add_number += S_GET_VALUE (add_symbolP); |
00a69b89 ILT |
2569 | /* start-sanitize-v850 */ |
2570 | #endif | |
2571 | /* end-sanitize-v850 */ | |
a043f579 | 2572 | #endif |
a55774a1 | 2573 | #endif |
f5c32424 KR |
2574 | } |
2575 | } | |
2576 | } | |
6efd877d | 2577 | |
f5c32424 KR |
2578 | if (pcrel) |
2579 | { | |
96fe71e1 | 2580 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 KR |
2581 | if (add_symbolP == 0) |
2582 | { | |
1cf7548e | 2583 | #ifndef BFD_ASSEMBLER |
f5c32424 | 2584 | fixP->fx_addsy = &abs_symbol; |
1cf7548e KR |
2585 | #else |
2586 | fixP->fx_addsy = section_symbol (absolute_section); | |
2587 | #endif | |
2588 | fixP->fx_addsy->sy_used_in_reloc = 1; | |
f5c32424 | 2589 | ++seg_reloc_count; |
98c6bbbe KR |
2590 | } |
2591 | } | |
6efd877d | 2592 | |
c7d7eed0 | 2593 | if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) |
f5c32424 | 2594 | { |
f7ab9441 | 2595 | if (size < sizeof (valueT)) |
f5c32424 | 2596 | { |
f7ab9441 DE |
2597 | valueT mask, hibit; |
2598 | ||
df44a852 | 2599 | /* set all bits to one */ |
f7ab9441 | 2600 | mask = 0; |
df44a852 KR |
2601 | mask--; |
2602 | /* Technically, combining these produces an undefined result | |
2603 | if size is sizeof (valueT), though I think these two | |
2604 | half-way operations should both be defined. And the | |
2605 | compiler should be able to combine them if it's valid on | |
2606 | the host architecture. */ | |
2607 | mask <<= size * 4; | |
2608 | mask <<= size * 4; | |
f7ab9441 | 2609 | hibit = (valueT) 1 << (size * 8 - 1); |
a78bc551 ILT |
2610 | if (((add_number & mask) != 0 |
2611 | || (fixP->fx_signed | |
f7ab9441 | 2612 | && (add_number & hibit) != 0)) |
a78bc551 | 2613 | && ((add_number & mask) != mask |
f7ab9441 | 2614 | || (add_number & hibit) == 0)) |
df44a852 KR |
2615 | { |
2616 | char buf[50], buf2[50]; | |
2617 | sprint_value (buf, fragP->fr_address + where); | |
2618 | if (add_number > 1000) | |
2619 | sprint_value (buf2, add_number); | |
2620 | else | |
2621 | sprintf (buf2, "%ld", (long) add_number); | |
2622 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2623 | "Value of %s too large for field of %d bytes at %s", | |
2624 | buf2, size, buf); | |
2625 | } /* generic error checking */ | |
2626 | } | |
f5c32424 KR |
2627 | #ifdef WARN_SIGNED_OVERFLOW_WORD |
2628 | /* Warn if a .word value is too large when treated as a signed | |
2629 | number. We already know it is not too negative. This is to | |
2630 | catch over-large switches generated by gcc on the 68k. */ | |
def66e24 | 2631 | if (!flag_signed_overflow_ok |
f5c32424 KR |
2632 | && size == 2 |
2633 | && add_number > 0x7fff) | |
2634 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2635 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2636 | (long) add_number, | |
2637 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2638 | #endif |
f5c32424 | 2639 | } /* not a bit fix */ |
6efd877d | 2640 | |
98c6bbbe KR |
2641 | if (!fixP->fx_done) |
2642 | { | |
3f81f3cf MM |
2643 | #ifdef MD_APPLY_FIX3 |
2644 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
2645 | #else | |
43ca9aa6 | 2646 | #ifdef BFD_ASSEMBLER |
98c6bbbe | 2647 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2648 | #else |
98c6bbbe KR |
2649 | md_apply_fix (fixP, add_number); |
2650 | #endif | |
3f81f3cf | 2651 | #endif |
98c6bbbe KR |
2652 | |
2653 | #ifndef TC_HANDLES_FX_DONE | |
2654 | /* If the tc-* files haven't been converted, assume it's handling | |
2655 | it the old way, where a null fx_addsy means that the fix has | |
2656 | been applied completely, and no further work is needed. */ | |
2657 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2658 | fixP->fx_done = 1; | |
43ca9aa6 | 2659 | #endif |
98c6bbbe KR |
2660 | } |
2661 | #ifdef TC_VALIDATE_FIX | |
a55774a1 KR |
2662 | skip: ; |
2663 | #endif | |
2664 | #ifdef DEBUG5 | |
2665 | fprintf (stderr, "result:\n"); | |
2666 | print_fixup (fixP); | |
98c6bbbe | 2667 | #endif |
f5c32424 | 2668 | } /* For each fixS in this segment. */ |
6efd877d | 2669 | |
f5c32424 KR |
2670 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2671 | return seg_reloc_count; | |
2672 | } | |
6efd877d | 2673 | |
3f81f3cf | 2674 | #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */ |
6efd877d | 2675 | |
f5c32424 KR |
2676 | void |
2677 | number_to_chars_bigendian (buf, val, n) | |
2678 | char *buf; | |
2679 | valueT val; | |
2680 | int n; | |
2681 | { | |
2682 | if (n > sizeof (val)|| n <= 0) | |
2683 | abort (); | |
2684 | while (n--) | |
2685 | { | |
2686 | buf[n] = val & 0xff; | |
2687 | val >>= 8; | |
2688 | } | |
d5364748 | 2689 | } |
fecd2382 | 2690 | |
f5c32424 KR |
2691 | void |
2692 | number_to_chars_littleendian (buf, val, n) | |
2693 | char *buf; | |
2694 | valueT val; | |
2695 | int n; | |
2696 | { | |
2697 | if (n > sizeof (val) || n <= 0) | |
2698 | abort (); | |
2699 | while (n--) | |
2700 | { | |
2701 | *buf++ = val & 0xff; | |
2702 | val >>= 8; | |
2703 | } | |
2704 | } | |
80aab579 | 2705 | |
a043f579 ILT |
2706 | void |
2707 | write_print_statistics (file) | |
2708 | FILE *file; | |
2709 | { | |
2710 | fprintf (stderr, "fixups: %d\n", n_fixups); | |
2711 | } | |
2712 | ||
4acf8c78 KR |
2713 | /* for debugging */ |
2714 | extern int indent_level; | |
b04bc423 | 2715 | extern void print_symbol_value_1 (); |
4acf8c78 KR |
2716 | |
2717 | void | |
2718 | print_fixup (fixp) | |
2719 | fixS *fixp; | |
2720 | { | |
2721 | indent_level = 1; | |
a55774a1 | 2722 | fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line); |
4acf8c78 KR |
2723 | if (fixp->fx_pcrel) |
2724 | fprintf (stderr, " pcrel"); | |
2725 | if (fixp->fx_pcrel_adjust) | |
2726 | fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust); | |
2727 | if (fixp->fx_im_disp) | |
2728 | { | |
2729 | #ifdef TC_NS32K | |
2730 | fprintf (stderr, " im_disp=%d", fixp->fx_im_disp); | |
2731 | #else | |
2732 | fprintf (stderr, " im_disp"); | |
2733 | #endif | |
2734 | } | |
2735 | if (fixp->fx_tcbit) | |
2736 | fprintf (stderr, " tcbit"); | |
2737 | if (fixp->fx_done) | |
2738 | fprintf (stderr, " done"); | |
a55774a1 KR |
2739 | fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx", |
2740 | fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where, | |
2741 | (long) fixp->fx_offset, (long) fixp->fx_addnumber); | |
9dc6c00f KR |
2742 | #ifdef BFD_ASSEMBLER |
2743 | fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type), | |
2744 | fixp->fx_r_type); | |
2745 | #else | |
a55774a1 | 2746 | #ifdef NEED_FX_R_TYPE |
9dc6c00f | 2747 | fprintf (stderr, " r_type=%d", fixp->fx_r_type); |
a55774a1 | 2748 | #endif |
9dc6c00f KR |
2749 | #endif |
2750 | if (fixp->fx_addsy) | |
2751 | { | |
a55774a1 | 2752 | fprintf (stderr, "\n +<"); |
9dc6c00f KR |
2753 | print_symbol_value_1 (stderr, fixp->fx_addsy); |
2754 | fprintf (stderr, ">"); | |
2755 | } | |
a55774a1 KR |
2756 | if (fixp->fx_subsy) |
2757 | { | |
2758 | fprintf (stderr, "\n -<"); | |
2759 | print_symbol_value_1 (stderr, fixp->fx_subsy); | |
2760 | fprintf (stderr, ">"); | |
2761 | } | |
9dc6c00f | 2762 | fprintf (stderr, "\n"); |
4acf8c78 KR |
2763 | } |
2764 | ||
fecd2382 | 2765 | /* end of write.c */ |