Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* write.c - emit .o file |
5767cfb7 ILT |
2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 1995 |
3 | Free Software Foundation, Inc. | |
6efd877d | 4 | |
a39116f1 | 5 | This file is part of GAS, the GNU Assembler. |
6efd877d | 6 | |
a39116f1 RP |
7 | GAS is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
6efd877d | 11 | |
a39116f1 RP |
12 | GAS is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
6efd877d | 16 | |
a39116f1 RP |
17 | You should have received a copy of the GNU General Public License |
18 | along with GAS; see the file COPYING. If not, write to | |
a2a5a4fa | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
fecd2382 | 20 | |
c593cf41 | 21 | /* This thing should be set up to do byteordering correctly. But... */ |
fecd2382 RP |
22 | |
23 | #include "as.h" | |
fecd2382 RP |
24 | #include "subsegs.h" |
25 | #include "obstack.h" | |
26 | #include "output-file.h" | |
27 | ||
d9d6f094 KR |
28 | /* This looks like a good idea. Let's try turning it on always, for now. */ |
29 | #undef BFD_FAST_SECTION_FILL | |
30 | #define BFD_FAST_SECTION_FILL | |
31 | ||
43ca9aa6 KR |
32 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop |
33 | instruction so that the disassembler does not choke on it. */ | |
6d5460ab RP |
34 | #ifndef NOP_OPCODE |
35 | #define NOP_OPCODE 0x00 | |
36 | #endif | |
37 | ||
f5c32424 KR |
38 | #ifndef TC_ADJUST_RELOC_COUNT |
39 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
40 | #endif | |
41 | ||
335d35c8 JL |
42 | #ifndef TC_FORCE_RELOCATION |
43 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
44 | #endif | |
45 | ||
96fe71e1 MM |
46 | #ifndef TC_FORCE_RELOCATION_SECTION |
47 | #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) | |
48 | #endif | |
49 | ||
50 | #ifndef MD_PCREL_FROM_SECTION | |
51 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) | |
52 | #endif | |
53 | ||
43ca9aa6 KR |
54 | #ifndef WORKING_DOT_WORD |
55 | extern CONST int md_short_jump_size; | |
56 | extern CONST int md_long_jump_size; | |
57 | #endif | |
58 | ||
1cf7548e | 59 | int symbol_table_frozen; |
a55774a1 | 60 | void print_fixup PARAMS ((fixS *)); |
1cf7548e | 61 | |
1b96bdce | 62 | #ifdef BFD_ASSEMBLER |
a55774a1 KR |
63 | static void renumber_sections PARAMS ((bfd *, asection *, PTR)); |
64 | ||
1b96bdce ILT |
65 | /* We generally attach relocs to frag chains. However, after we have |
66 | chained these all together into a segment, any relocs we add after | |
67 | that must be attached to a segment. This will include relocs added | |
68 | in md_estimate_size_for_relax, for example. */ | |
69 | static int frags_chained = 0; | |
70 | #endif | |
71 | ||
43ca9aa6 KR |
72 | #ifndef BFD_ASSEMBLER |
73 | ||
45432836 | 74 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
75 | struct frag *text_frag_root; |
76 | struct frag *data_frag_root; | |
77 | struct frag *bss_frag_root; | |
fecd2382 | 78 | |
09952cd9 KR |
79 | struct frag *text_last_frag; /* Last frag in segment. */ |
80 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 81 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 82 | #endif |
fecd2382 | 83 | |
1cf7548e | 84 | #ifndef BFD |
fecd2382 | 85 | static object_headers headers; |
80aab579 ILT |
86 | #endif |
87 | ||
88 | long string_byte_count; | |
fecd2382 RP |
89 | char *next_object_file_charP; /* Tracks object file bytes. */ |
90 | ||
3eb802b5 | 91 | #ifndef OBJ_VMS |
fecd2382 | 92 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 93 | #endif |
fecd2382 | 94 | |
43ca9aa6 KR |
95 | #endif /* BFD_ASSEMBLER */ |
96 | ||
7a0405b9 | 97 | #ifdef BFD_ASSEMBLER |
b23f6743 | 98 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
99 | symbolS *add, symbolS *sub, |
100 | offsetT offset, int pcrel, | |
7a0405b9 | 101 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 102 | #else |
b23f6743 | 103 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
104 | symbolS *add, symbolS *sub, |
105 | offsetT offset, int pcrel, | |
106 | int r_type)); | |
5ac34ac3 | 107 | #endif |
3f81f3cf | 108 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
6efd877d | 109 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 110 | #endif |
d5364748 | 111 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
112 | |
113 | /* | |
114 | * fix_new() | |
115 | * | |
116 | * Create a fixS in obstack 'notes'. | |
117 | */ | |
5ac34ac3 ILT |
118 | static fixS * |
119 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
120 | r_type) | |
6efd877d KR |
121 | fragS *frag; /* Which frag? */ |
122 | int where; /* Where in that frag? */ | |
b23f6743 | 123 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 124 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 125 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 126 | offsetT offset; /* X_add_number. */ |
6efd877d | 127 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
128 | #ifdef BFD_ASSEMBLER |
129 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
130 | #else | |
6efd877d | 131 | int r_type; /* Relocation type */ |
43ca9aa6 | 132 | #endif |
fecd2382 | 133 | { |
6efd877d KR |
134 | fixS *fixP; |
135 | ||
136 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); | |
137 | ||
138 | fixP->fx_frag = frag; | |
139 | fixP->fx_where = where; | |
140 | fixP->fx_size = size; | |
f00f5ecd ILT |
141 | /* We've made fx_size a narrow field; check that it's wide enough. */ |
142 | if (fixP->fx_size != size) | |
143 | { | |
144 | as_bad ("field fx_size too small to hold %d", size); | |
145 | abort (); | |
146 | } | |
6efd877d KR |
147 | fixP->fx_addsy = add_symbol; |
148 | fixP->fx_subsy = sub_symbol; | |
149 | fixP->fx_offset = offset; | |
150 | fixP->fx_pcrel = pcrel; | |
a55774a1 | 151 | fixP->fx_plt = 0; |
43ca9aa6 | 152 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 153 | fixP->fx_r_type = r_type; |
c593cf41 | 154 | #endif |
6efd877d KR |
155 | fixP->fx_im_disp = 0; |
156 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 157 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 158 | fixP->fx_addnumber = 0; |
a58374d7 | 159 | fixP->fx_tcbit = 0; |
98c6bbbe | 160 | fixP->fx_done = 0; |
43ca9aa6 | 161 | |
f00f5ecd ILT |
162 | #ifdef TC_FIX_TYPE |
163 | TC_INIT_FIX_DATA(fixP); | |
43ca9aa6 | 164 | #endif |
43ca9aa6 | 165 | |
84fa9814 KR |
166 | as_where (&fixP->fx_file, &fixP->fx_line); |
167 | ||
43ca9aa6 KR |
168 | /* Usually, we want relocs sorted numerically, but while |
169 | comparing to older versions of gas that have relocs | |
170 | reverse sorted, it is convenient to have this compile | |
171 | time option. xoxorich. */ | |
172 | ||
173 | { | |
6efd877d | 174 | |
43ca9aa6 | 175 | #ifdef BFD_ASSEMBLER |
1b96bdce ILT |
176 | fixS **seg_fix_rootP = (frags_chained |
177 | ? &seg_info (now_seg)->fix_root | |
178 | : &frchain_now->fix_root); | |
179 | fixS **seg_fix_tailP = (frags_chained | |
180 | ? &seg_info (now_seg)->fix_tail | |
181 | : &frchain_now->fix_tail); | |
43ca9aa6 | 182 | #endif |
09952cd9 | 183 | |
f6e504fe | 184 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 185 | |
43ca9aa6 KR |
186 | fixP->fx_next = *seg_fix_rootP; |
187 | *seg_fix_rootP = fixP; | |
6efd877d | 188 | |
f6e504fe | 189 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 190 | |
43ca9aa6 | 191 | fixP->fx_next = NULL; |
6efd877d | 192 | |
43ca9aa6 KR |
193 | if (*seg_fix_tailP) |
194 | (*seg_fix_tailP)->fx_next = fixP; | |
195 | else | |
196 | *seg_fix_rootP = fixP; | |
197 | *seg_fix_tailP = fixP; | |
6efd877d | 198 | |
f6e504fe | 199 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 200 | |
43ca9aa6 KR |
201 | } |
202 | ||
203 | return fixP; | |
204 | } | |
205 | ||
5ac34ac3 ILT |
206 | /* Create a fixup relative to a symbol (plus a constant). */ |
207 | ||
208 | fixS * | |
209 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
210 | fragS *frag; /* Which frag? */ | |
211 | int where; /* Where in that frag? */ | |
f7da4a99 | 212 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
213 | symbolS *add_symbol; /* X_add_symbol. */ |
214 | offsetT offset; /* X_add_number. */ | |
215 | int pcrel; /* TRUE if PC-relative relocation. */ | |
216 | #ifdef BFD_ASSEMBLER | |
217 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
218 | #else | |
219 | int r_type; /* Relocation type */ | |
220 | #endif | |
221 | { | |
222 | return fix_new_internal (frag, where, size, add_symbol, | |
223 | (symbolS *) NULL, offset, pcrel, r_type); | |
224 | } | |
225 | ||
226 | /* Create a fixup for an expression. Currently we only support fixups | |
227 | for difference expressions. That is itself more than most object | |
228 | file formats support anyhow. */ | |
229 | ||
230 | fixS * | |
231 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
232 | fragS *frag; /* Which frag? */ | |
233 | int where; /* Where in that frag? */ | |
f7da4a99 | 234 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
235 | expressionS *exp; /* Expression. */ |
236 | int pcrel; /* TRUE if PC-relative relocation. */ | |
237 | #ifdef BFD_ASSEMBLER | |
238 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
239 | #else | |
240 | int r_type; /* Relocation type */ | |
241 | #endif | |
242 | { | |
243 | symbolS *add = NULL; | |
244 | symbolS *sub = NULL; | |
245 | offsetT off = 0; | |
96fe71e1 | 246 | |
5ac34ac3 ILT |
247 | switch (exp->X_op) |
248 | { | |
249 | case O_absent: | |
250 | break; | |
251 | ||
4acf8c78 KR |
252 | case O_add: |
253 | /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if | |
254 | the difference expression cannot immediately be reduced. */ | |
255 | { | |
256 | extern symbolS *make_expr_symbol (); | |
257 | symbolS *stmp = make_expr_symbol (exp); | |
258 | exp->X_op = O_symbol; | |
259 | exp->X_op_symbol = 0; | |
260 | exp->X_add_symbol = stmp; | |
261 | exp->X_add_number = 0; | |
262 | return fix_new_exp (frag, where, size, exp, pcrel, r_type); | |
263 | } | |
264 | ||
96fe71e1 MM |
265 | case O_symbol_rva: |
266 | add = exp->X_add_symbol; | |
267 | off = exp->X_add_number; | |
268 | ||
269 | #if defined(BFD_ASSEMBLER) | |
270 | r_type = BFD_RELOC_RVA; | |
271 | #elif defined(TC_RVA_RELOC) | |
272 | r_type = TC_RVA_RELOC; | |
273 | #else | |
274 | as_fatal("rva not supported"); | |
275 | #endif | |
276 | break; | |
277 | ||
b23f6743 KR |
278 | case O_uminus: |
279 | sub = exp->X_add_symbol; | |
280 | off = exp->X_add_number; | |
281 | break; | |
282 | ||
5ac34ac3 ILT |
283 | case O_subtract: |
284 | sub = exp->X_op_symbol; | |
285 | /* Fall through. */ | |
286 | case O_symbol: | |
287 | add = exp->X_add_symbol; | |
288 | /* Fall through. */ | |
289 | case O_constant: | |
290 | off = exp->X_add_number; | |
291 | break; | |
292 | ||
293 | default: | |
294 | as_bad ("expression too complex for fixup"); | |
295 | } | |
296 | ||
297 | return fix_new_internal (frag, where, size, add, sub, off, | |
298 | pcrel, r_type); | |
299 | } | |
300 | ||
43ca9aa6 KR |
301 | /* Append a string onto another string, bumping the pointer along. */ |
302 | void | |
303 | append (charPP, fromP, length) | |
304 | char **charPP; | |
305 | char *fromP; | |
306 | unsigned long length; | |
307 | { | |
308 | /* Don't trust memcpy() of 0 chars. */ | |
309 | if (length == 0) | |
310 | return; | |
311 | ||
80aab579 | 312 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
313 | *charPP += length; |
314 | } | |
315 | ||
316 | #ifndef BFD_ASSEMBLER | |
317 | int section_alignment[SEG_MAXIMUM_ORDINAL]; | |
318 | #endif | |
319 | ||
320 | /* | |
321 | * This routine records the largest alignment seen for each segment. | |
322 | * If the beginning of the segment is aligned on the worst-case | |
323 | * boundary, all of the other alignments within it will work. At | |
324 | * least one object format really uses this info. | |
325 | */ | |
326 | void | |
327 | record_alignment (seg, align) | |
328 | /* Segment to which alignment pertains */ | |
329 | segT seg; | |
330 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
331 | boundary, etc.) */ | |
332 | int align; | |
333 | { | |
5c800455 ILT |
334 | if (seg == absolute_section) |
335 | return; | |
43ca9aa6 KR |
336 | #ifdef BFD_ASSEMBLER |
337 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
338 | bfd_set_section_alignment (stdoutput, seg, align); | |
339 | #else | |
340 | if (align > section_alignment[(int) seg]) | |
341 | section_alignment[(int) seg] = align; | |
342 | #endif | |
343 | } | |
344 | ||
a55774a1 KR |
345 | #ifdef BFD_ASSEMBLER |
346 | ||
347 | /* Reset the section indices after removing the gas created sections. */ | |
348 | ||
349 | static void | |
350 | renumber_sections (abfd, sec, countparg) | |
351 | bfd *abfd; | |
352 | asection *sec; | |
353 | PTR countparg; | |
354 | { | |
355 | int *countp = (int *) countparg; | |
356 | ||
357 | sec->index = *countp; | |
358 | ++*countp; | |
359 | } | |
360 | ||
361 | #endif /* defined (BFD_ASSEMBLER) */ | |
362 | ||
43ca9aa6 KR |
363 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) |
364 | ||
365 | static fragS * | |
366 | chain_frchains_together_1 (section, frchp) | |
367 | segT section; | |
368 | struct frchain *frchp; | |
369 | { | |
370 | fragS dummy, *prev_frag = &dummy; | |
b04bc423 | 371 | #ifdef BFD_ASSEMBLER |
3f81f3cf | 372 | fixS fix_dummy, *prev_fix = &fix_dummy; |
b04bc423 | 373 | #endif |
262b22cd | 374 | |
43ca9aa6 KR |
375 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) |
376 | { | |
377 | prev_frag->fr_next = frchp->frch_root; | |
378 | prev_frag = frchp->frch_last; | |
96fe71e1 | 379 | assert (prev_frag->fr_type != 0); |
3a0e38ee | 380 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
381 | if (frchp->fix_root != (fixS *) NULL) |
382 | { | |
383 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
384 | seg_info (section)->fix_root = frchp->fix_root; | |
385 | prev_fix->fx_next = frchp->fix_root; | |
1b96bdce | 386 | seg_info (section)->fix_tail = frchp->fix_tail; |
262b22cd ILT |
387 | prev_fix = frchp->fix_tail; |
388 | } | |
3a0e38ee | 389 | #endif |
43ca9aa6 | 390 | } |
96fe71e1 | 391 | assert (prev_frag->fr_type != 0); |
43ca9aa6 KR |
392 | prev_frag->fr_next = 0; |
393 | return prev_frag; | |
394 | } | |
395 | ||
396 | #endif | |
397 | ||
398 | #ifdef BFD_ASSEMBLER | |
399 | ||
400 | static void | |
401 | chain_frchains_together (abfd, section, xxx) | |
402 | bfd *abfd; /* unused */ | |
403 | segT section; | |
a58374d7 | 404 | PTR xxx; /* unused */ |
43ca9aa6 | 405 | { |
f2f7d044 ILT |
406 | segment_info_type *info; |
407 | ||
408 | /* BFD may have introduced its own sections without using | |
409 | subseg_new, so it is possible that seg_info is NULL. */ | |
410 | info = seg_info (section); | |
411 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
412 | info->frchainP->frch_last |
413 | = chain_frchains_together_1 (section, info->frchainP); | |
1b96bdce ILT |
414 | |
415 | /* Now that we've chained the frags together, we must add new fixups | |
416 | to the segment, not to the frag chain. */ | |
417 | frags_chained = 1; | |
43ca9aa6 KR |
418 | } |
419 | ||
420 | #endif | |
542e1629 | 421 | |
d5364748 | 422 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 423 | |
6efd877d KR |
424 | void |
425 | remove_subsegs (head, seg, root, last) | |
426 | frchainS *head; | |
427 | int seg; | |
428 | fragS **root; | |
429 | fragS **last; | |
65bfcf2e | 430 | { |
65bfcf2e | 431 | *root = head->frch_root; |
43ca9aa6 KR |
432 | *last = chain_frchains_together_1 (seg, head); |
433 | } | |
434 | ||
435 | #endif /* BFD */ | |
436 | ||
80aab579 ILT |
437 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
438 | ||
43ca9aa6 | 439 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
440 | static void |
441 | cvt_frag_to_fill (sec, fragP) | |
442 | segT sec; | |
43ca9aa6 | 443 | fragS *fragP; |
43ca9aa6 | 444 | #else |
58d4951d | 445 | static void |
d4083e29 | 446 | cvt_frag_to_fill (headersP, sec, fragP) |
3f81f3cf | 447 | object_headers *headersP; |
d4083e29 | 448 | segT sec; |
58d4951d | 449 | fragS *fragP; |
43ca9aa6 | 450 | #endif |
58d4951d | 451 | { |
43ca9aa6 | 452 | switch (fragP->fr_type) |
6efd877d | 453 | { |
43ca9aa6 | 454 | case rs_align: |
cd3b81bd | 455 | case rs_align_code: |
43ca9aa6 | 456 | case rs_org: |
cd3b81bd | 457 | case rs_space: |
43ca9aa6 KR |
458 | #ifdef HANDLE_ALIGN |
459 | HANDLE_ALIGN (fragP); | |
460 | #endif | |
43ca9aa6 | 461 | know (fragP->fr_next != NULL); |
43ca9aa6 KR |
462 | fragP->fr_offset = (fragP->fr_next->fr_address |
463 | - fragP->fr_address | |
98c6bbbe | 464 | - fragP->fr_fix) / fragP->fr_var; |
c151fd1e KR |
465 | if (fragP->fr_offset < 0) |
466 | { | |
467 | as_bad ("attempt to .org/.space backwards? (%ld)", | |
468 | (long) fragP->fr_offset); | |
469 | } | |
cd3b81bd | 470 | fragP->fr_type = rs_fill; |
43ca9aa6 | 471 | break; |
65bfcf2e | 472 | |
43ca9aa6 KR |
473 | case rs_fill: |
474 | break; | |
475 | ||
476 | case rs_machine_dependent: | |
477 | #ifdef BFD_ASSEMBLER | |
478 | md_convert_frag (stdoutput, sec, fragP); | |
479 | #else | |
d4083e29 | 480 | md_convert_frag (headersP, sec, fragP); |
43ca9aa6 KR |
481 | #endif |
482 | ||
d5364748 | 483 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
484 | |
485 | /* | |
486 | * After md_convert_frag, we make the frag into a ".space 0". | |
487 | * Md_convert_frag() should set up any fixSs and constants | |
488 | * required. | |
489 | */ | |
490 | frag_wane (fragP); | |
491 | break; | |
492 | ||
493 | #ifndef WORKING_DOT_WORD | |
494 | case rs_broken_word: | |
495 | { | |
496 | struct broken_word *lie; | |
497 | ||
498 | if (fragP->fr_subtype) | |
499 | { | |
500 | fragP->fr_fix += md_short_jump_size; | |
501 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
502 | lie && lie->dispfrag == fragP; | |
503 | lie = lie->next_broken_word) | |
504 | if (lie->added == 1) | |
505 | fragP->fr_fix += md_long_jump_size; | |
506 | } | |
507 | frag_wane (fragP); | |
508 | } | |
509 | break; | |
510 | #endif | |
511 | ||
512 | default: | |
513 | BAD_CASE (fragP->fr_type); | |
514 | break; | |
6efd877d | 515 | } |
65bfcf2e | 516 | } |
6efd877d | 517 | |
80aab579 ILT |
518 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
519 | ||
43ca9aa6 KR |
520 | #ifdef BFD_ASSEMBLER |
521 | static void | |
522 | relax_and_size_seg (abfd, sec, xxx) | |
523 | bfd *abfd; | |
524 | asection *sec; | |
a58374d7 | 525 | PTR xxx; |
43ca9aa6 KR |
526 | { |
527 | flagword flags; | |
13e9182d KR |
528 | fragS *fragp; |
529 | segment_info_type *seginfo; | |
530 | int x; | |
531 | valueT size, newsize; | |
43ca9aa6 | 532 | |
f00f5ecd ILT |
533 | subseg_change (sec, 0); |
534 | ||
43ca9aa6 KR |
535 | flags = bfd_get_section_flags (abfd, sec); |
536 | ||
d9d6f094 | 537 | seginfo = seg_info (sec); |
13e9182d | 538 | if (seginfo && seginfo->frchainP) |
43ca9aa6 | 539 | { |
13e9182d KR |
540 | relax_segment (seginfo->frchainP->frch_root, sec); |
541 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
542 | cvt_frag_to_fill (sec, fragp); | |
543 | for (fragp = seginfo->frchainP->frch_root; | |
544 | fragp->fr_next; | |
545 | fragp = fragp->fr_next) | |
546 | /* walk to last elt */; | |
547 | size = fragp->fr_address + fragp->fr_fix; | |
548 | } | |
549 | else | |
550 | size = 0; | |
a58374d7 ILT |
551 | |
552 | if (size > 0 && ! seginfo->bss) | |
553 | flags |= SEC_HAS_CONTENTS; | |
554 | ||
555 | /* @@ This is just an approximation. */ | |
5f6efd5a | 556 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
557 | flags |= SEC_RELOC; |
558 | else | |
559 | flags &= ~SEC_RELOC; | |
560 | x = bfd_set_section_flags (abfd, sec, flags); | |
561 | assert (x == true); | |
562 | ||
20b39b6f JL |
563 | newsize = md_section_align (sec, size); |
564 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
565 | assert (x == true); |
566 | ||
567 | /* If the size had to be rounded up, add some padding in the last | |
568 | non-empty frag. */ | |
13e9182d KR |
569 | assert (newsize >= size); |
570 | if (size != newsize) | |
571 | { | |
572 | fragS *last = seginfo->frchainP->frch_last; | |
573 | fragp = seginfo->frchainP->frch_root; | |
574 | while (fragp->fr_next != last) | |
575 | fragp = fragp->fr_next; | |
576 | last->fr_address = size; | |
577 | fragp->fr_offset += newsize - size; | |
578 | } | |
579 | ||
43ca9aa6 KR |
580 | #ifdef tc_frob_section |
581 | tc_frob_section (sec); | |
582 | #endif | |
583 | #ifdef obj_frob_section | |
584 | obj_frob_section (sec); | |
585 | #endif | |
586 | } | |
587 | ||
d5364748 KR |
588 | #ifdef DEBUG2 |
589 | static void | |
590 | dump_section_relocs (abfd, sec, stream_) | |
591 | bfd *abfd; | |
592 | asection *sec; | |
593 | char *stream_; | |
594 | { | |
595 | FILE *stream = (FILE *) stream_; | |
596 | segment_info_type *seginfo = seg_info (sec); | |
597 | fixS *fixp = seginfo->fix_root; | |
598 | ||
599 | if (!fixp) | |
600 | return; | |
601 | ||
602 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
603 | while (fixp) | |
604 | { | |
605 | symbolS *s = fixp->fx_addsy; | |
606 | if (s) | |
1cf7548e KR |
607 | { |
608 | fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), | |
609 | s->bsym->section->name); | |
610 | if (s->bsym->flags & BSF_SECTION_SYM) | |
611 | { | |
612 | fprintf (stream, " section sym"); | |
613 | if (S_GET_VALUE (s)) | |
614 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
615 | } | |
616 | else | |
617 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
618 | fprintf (stream, ")+%x\n", fixp->fx_offset); | |
619 | } | |
d5364748 KR |
620 | else |
621 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
622 | fixp = fixp->fx_next; | |
623 | } | |
624 | } | |
625 | #else | |
626 | #define dump_section_relocs(ABFD,SEC,STREAM) (void)(ABFD,SEC,STREAM) | |
627 | #endif | |
628 | ||
98c6bbbe KR |
629 | #ifndef EMIT_SECTION_SYMBOLS |
630 | #define EMIT_SECTION_SYMBOLS 1 | |
631 | #endif | |
632 | ||
d5364748 KR |
633 | static void |
634 | adjust_reloc_syms (abfd, sec, xxx) | |
635 | bfd *abfd; | |
636 | asection *sec; | |
a58374d7 | 637 | PTR xxx; |
d5364748 KR |
638 | { |
639 | segment_info_type *seginfo = seg_info (sec); | |
640 | fixS *fixp; | |
641 | ||
642 | if (seginfo == NULL) | |
643 | return; | |
644 | ||
645 | dump_section_relocs (abfd, sec, stderr); | |
646 | ||
647 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
98c6bbbe KR |
648 | if (fixp->fx_done) |
649 | /* ignore it */; | |
650 | else if (fixp->fx_addsy) | |
d5364748 | 651 | { |
a55774a1 | 652 | symbolS *sym; |
4acf8c78 KR |
653 | asection *symsec; |
654 | ||
655 | reduce_fixup: | |
656 | ||
a55774a1 KR |
657 | #ifdef DEBUG5 |
658 | fprintf (stderr, "\n\nadjusting fixup:\n"); | |
659 | print_fixup (fixp); | |
660 | #endif | |
661 | ||
662 | sym = fixp->fx_addsy; | |
4acf8c78 | 663 | symsec = sym->bsym->section; |
d5364748 | 664 | |
e120d9fb | 665 | if (sym != NULL && sym->sy_mri_common) |
1356d77d ILT |
666 | { |
667 | /* These symbols are handled specially in fixup_segment. */ | |
668 | goto done; | |
669 | } | |
670 | ||
a58374d7 ILT |
671 | /* If it's one of these sections, assume the symbol is |
672 | definitely going to be output. The code in | |
673 | md_estimate_size_before_relax in tc-mips.c uses this test | |
674 | as well, so if you change this code you should look at that | |
675 | code. */ | |
cd3b81bd KR |
676 | if (bfd_is_und_section (symsec) |
677 | || bfd_is_abs_section (symsec) | |
d5364748 | 678 | || bfd_is_com_section (symsec)) |
80aab579 ILT |
679 | { |
680 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
d4083e29 KR |
681 | #ifdef UNDEFINED_DIFFERENCE_OK |
682 | /* We have the difference of an undefined symbol and some | |
683 | other symbol. Make sure to mark the other symbol as used | |
684 | in a relocation so that it will always be output. */ | |
685 | if (fixp->fx_subsy) | |
686 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
687 | #endif | |
a55774a1 | 688 | goto done; |
80aab579 | 689 | } |
d5364748 KR |
690 | |
691 | /* Since we're reducing to section symbols, don't attempt to reduce | |
692 | anything that's already using one. */ | |
98c6bbbe | 693 | if (sym->bsym->flags & BSF_SECTION_SYM) |
80aab579 ILT |
694 | { |
695 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 696 | goto done; |
80aab579 | 697 | } |
d5364748 KR |
698 | |
699 | /* Is there some other reason we can't adjust this one? (E.g., | |
700 | call/bal links in i960-bout symbols.) */ | |
701 | #ifdef obj_fix_adjustable | |
702 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
703 | { |
704 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 705 | goto done; |
80aab579 | 706 | } |
d5364748 | 707 | #endif |
efa0c22e KR |
708 | |
709 | /* Is there some other (target cpu dependent) reason we can't adjust | |
710 | this one? (E.g. relocations involving function addresses on | |
711 | the PA. */ | |
712 | #ifdef tc_fix_adjustable | |
713 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
714 | { |
715 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 716 | goto done; |
20b39b6f | 717 | } |
efa0c22e KR |
718 | #endif |
719 | ||
4acf8c78 KR |
720 | /* For PIC support: We may get expressions like |
721 | "_GLOBAL_OFFSET_TABLE_+(.-L5)" where "." and "L5" may not | |
722 | necessarily have had a fixed difference initially. But now | |
723 | it should be a known constant, so we can reduce it. Since | |
724 | we can't easily handle a symbol value that looks like | |
725 | someUndefinedSymbol+const, though, we convert the fixup to | |
726 | access the undefined symbol directly, and discard the | |
727 | intermediate symbol. */ | |
728 | if (S_GET_SEGMENT (sym) == expr_section | |
729 | && sym->sy_value.X_op == O_add | |
730 | && (resolve_symbol_value (sym->sy_value.X_add_symbol), | |
731 | S_GET_SEGMENT (sym->sy_value.X_add_symbol) == undefined_section) | |
732 | && (resolve_symbol_value (sym->sy_value.X_op_symbol), | |
733 | S_GET_SEGMENT (sym->sy_value.X_op_symbol) == absolute_section)) | |
734 | { | |
735 | fixp->fx_offset += S_GET_VALUE (sym->sy_value.X_op_symbol); | |
736 | fixp->fx_offset += sym->sy_value.X_add_number; | |
a55774a1 | 737 | fixp->fx_addsy = sym->sy_value.X_add_symbol; |
4acf8c78 KR |
738 | goto reduce_fixup; |
739 | } | |
740 | ||
d5364748 KR |
741 | /* If the section symbol isn't going to be output, the relocs |
742 | at least should still work. If not, figure out what to do | |
743 | when we run into that case. */ | |
744 | fixp->fx_offset += S_GET_VALUE (sym); | |
6868afe6 | 745 | fixp->fx_addsy = section_symbol (symsec); |
80aab579 | 746 | fixp->fx_addsy->sy_used_in_reloc = 1; |
a55774a1 KR |
747 | |
748 | done: | |
749 | ; | |
d5364748 | 750 | } |
1cf7548e | 751 | #if 1/*def RELOC_REQUIRES_SYMBOL*/ |
e67a0640 KR |
752 | else |
753 | { | |
754 | /* There was no symbol required by this relocation. However, | |
755 | BFD doesn't really handle relocations without symbols well. | |
756 | (At least, the COFF support doesn't.) So for now we fake up | |
757 | a local symbol in the absolute section. */ | |
e8501a72 | 758 | |
1cf7548e | 759 | fixp->fx_addsy = section_symbol (absolute_section); |
a55774a1 | 760 | /* fixp->fx_addsy->sy_used_in_reloc = 1; */ |
e67a0640 KR |
761 | } |
762 | #endif | |
d5364748 KR |
763 | |
764 | dump_section_relocs (abfd, sec, stderr); | |
765 | } | |
766 | ||
43ca9aa6 | 767 | static void |
8d6c34a1 | 768 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
769 | bfd *abfd; |
770 | asection *sec; | |
a58374d7 | 771 | PTR xxx; |
43ca9aa6 KR |
772 | { |
773 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
774 | int i; |
775 | unsigned int n; | |
43ca9aa6 KR |
776 | arelent **relocs; |
777 | fixS *fixp; | |
98c6bbbe | 778 | char *err; |
43ca9aa6 | 779 | |
d5364748 KR |
780 | /* If seginfo is NULL, we did not create this section; don't do |
781 | anything with it. */ | |
782 | if (seginfo == NULL) | |
43ca9aa6 KR |
783 | return; |
784 | ||
785 | fixup_segment (seginfo->fix_root, sec); | |
786 | ||
3d3c5039 | 787 | n = 0; |
d5364748 KR |
788 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
789 | n++; | |
43ca9aa6 | 790 | |
d5364748 | 791 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 792 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
793 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
794 | n * sizeof (arelent *)); | |
8d6c34a1 | 795 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 796 | |
3d3c5039 ILT |
797 | i = 0; |
798 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
799 | { | |
800 | arelent *reloc; | |
3d3c5039 ILT |
801 | bfd_reloc_status_type s; |
802 | ||
98c6bbbe | 803 | if (fixp->fx_done) |
3d3c5039 | 804 | { |
3d3c5039 ILT |
805 | n--; |
806 | continue; | |
807 | } | |
808 | reloc = tc_gen_reloc (sec, fixp); | |
809 | if (!reloc) | |
810 | { | |
811 | n--; | |
812 | continue; | |
813 | } | |
c43d56f7 | 814 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
815 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
816 | abort (); | |
335d35c8 | 817 | |
4acf8c78 KR |
818 | s = bfd_install_relocation (stdoutput, reloc, |
819 | fixp->fx_frag->fr_literal, | |
820 | fixp->fx_frag->fr_address, | |
821 | sec, &err); | |
3d3c5039 ILT |
822 | switch (s) |
823 | { | |
824 | case bfd_reloc_ok: | |
825 | break; | |
df44a852 KR |
826 | case bfd_reloc_overflow: |
827 | as_bad_where (fixp->fx_file, fixp->fx_line, "relocation overflow"); | |
828 | break; | |
3d3c5039 | 829 | default: |
4acf8c78 KR |
830 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
831 | fixp->fx_file, fixp->fx_line); | |
3d3c5039 ILT |
832 | } |
833 | relocs[i++] = reloc; | |
834 | } | |
d5364748 KR |
835 | #else |
836 | n = n * MAX_RELOC_EXPANSION; | |
837 | /* Set up reloc information as well. */ | |
838 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
839 | n * sizeof (arelent *)); | |
840 | ||
841 | i = 0; | |
842 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
843 | { | |
844 | arelent **reloc; | |
d5364748 KR |
845 | char *data; |
846 | bfd_reloc_status_type s; | |
847 | int j; | |
848 | ||
98c6bbbe | 849 | if (fixp->fx_done) |
d5364748 | 850 | { |
d5364748 KR |
851 | n--; |
852 | continue; | |
853 | } | |
854 | reloc = tc_gen_reloc (sec, fixp); | |
855 | ||
856 | for (j = 0; reloc[j]; j++) | |
857 | { | |
858 | relocs[i++] = reloc[j]; | |
859 | assert(i <= n); | |
860 | } | |
861 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 862 | if (fixp->fx_where + fixp->fx_size |
d5364748 KR |
863 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
864 | abort (); | |
865 | for (j = 0; reloc[j]; j++) | |
866 | { | |
a55774a1 KR |
867 | s = bfd_install_relocation (stdoutput, reloc[j], |
868 | fixp->fx_frag->fr_literal, | |
869 | fixp->fx_frag->fr_address, | |
870 | sec, &err); | |
d5364748 KR |
871 | switch (s) |
872 | { | |
98c6bbbe KR |
873 | case bfd_reloc_ok: |
874 | break; | |
4acf8c78 KR |
875 | case bfd_reloc_overflow: |
876 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
877 | "relocation overflow"); | |
878 | break; | |
98c6bbbe | 879 | default: |
4acf8c78 KR |
880 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
881 | fixp->fx_file, fixp->fx_line); | |
d5364748 KR |
882 | } |
883 | } | |
884 | } | |
885 | n = i; | |
886 | #endif | |
887 | ||
1cf7548e KR |
888 | #ifdef DEBUG4 |
889 | { | |
890 | int i, j, nsyms; | |
891 | asymbol **sympp; | |
892 | sympp = bfd_get_outsymbols (stdoutput); | |
893 | nsyms = bfd_get_symcount (stdoutput); | |
894 | for (i = 0; i < n; i++) | |
895 | if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) | |
896 | { | |
897 | for (j = 0; j < nsyms; j++) | |
898 | if (sympp[j] == *relocs[i]->sym_ptr_ptr) | |
899 | break; | |
900 | if (j == nsyms) | |
901 | abort (); | |
902 | } | |
903 | } | |
904 | #endif | |
905 | ||
3d3c5039 ILT |
906 | if (n) |
907 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
908 | else |
909 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
910 | (bfd_get_section_flags (abfd, sec) |
911 | & (flagword) ~SEC_RELOC)); | |
98c6bbbe KR |
912 | |
913 | #ifdef DEBUG3 | |
d5364748 KR |
914 | { |
915 | int i; | |
916 | arelent *r; | |
917 | asymbol *s; | |
918 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
919 | for (i = 0; i < n; i++) | |
920 | { | |
921 | r = relocs[i]; | |
922 | s = *r->sym_ptr_ptr; | |
923 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
924 | i, r, r->address, s->name, r->addend); | |
925 | } | |
926 | } | |
927 | #endif | |
8d6c34a1 | 928 | } |
d5364748 | 929 | |
8d6c34a1 KR |
930 | static void |
931 | write_contents (abfd, sec, xxx) | |
932 | bfd *abfd; | |
933 | asection *sec; | |
a58374d7 | 934 | PTR xxx; |
8d6c34a1 KR |
935 | { |
936 | segment_info_type *seginfo = seg_info (sec); | |
937 | unsigned long offset = 0; | |
80aab579 | 938 | fragS *f; |
3d3c5039 ILT |
939 | |
940 | /* Write out the frags. */ | |
f37449aa ILT |
941 | if (seginfo == NULL |
942 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
943 | return; |
944 | ||
80aab579 ILT |
945 | for (f = seginfo->frchainP->frch_root; |
946 | f; | |
947 | f = f->fr_next) | |
43ca9aa6 KR |
948 | { |
949 | int x; | |
950 | unsigned long fill_size; | |
951 | char *fill_literal; | |
952 | long count; | |
953 | ||
80aab579 ILT |
954 | assert (f->fr_type == rs_fill); |
955 | if (f->fr_fix) | |
43ca9aa6 KR |
956 | { |
957 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
958 | f->fr_literal, (file_ptr) offset, |
959 | (bfd_size_type) f->fr_fix); | |
1cf7548e KR |
960 | if (x == false) |
961 | { | |
962 | bfd_perror (stdoutput->filename); | |
963 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
4acf8c78 | 964 | exit (EXIT_FAILURE); |
1cf7548e | 965 | } |
80aab579 | 966 | offset += f->fr_fix; |
43ca9aa6 | 967 | } |
80aab579 ILT |
968 | fill_literal = f->fr_literal + f->fr_fix; |
969 | fill_size = f->fr_var; | |
970 | count = f->fr_offset; | |
43ca9aa6 KR |
971 | assert (count >= 0); |
972 | if (fill_size && count) | |
d9d6f094 KR |
973 | { |
974 | char buf[256]; | |
305a3af6 SC |
975 | if (fill_size > sizeof(buf)) |
976 | { | |
977 | /* Do it the old way. Can this ever happen? */ | |
978 | while (count--) | |
979 | { | |
980 | x = bfd_set_section_contents (stdoutput, sec, | |
981 | fill_literal, | |
982 | (file_ptr) offset, | |
983 | (bfd_size_type) fill_size); | |
984 | if (x == false) | |
985 | { | |
986 | bfd_perror (stdoutput->filename); | |
987 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
988 | exit (EXIT_FAILURE); | |
989 | } | |
990 | offset += fill_size; | |
991 | } | |
992 | } | |
993 | else | |
994 | { | |
995 | /* Build a buffer full of fill objects and output it as | |
996 | often as necessary. This saves on the overhead of | |
997 | potentially lots of bfd_set_section_contents calls. */ | |
998 | int n_per_buf, i; | |
999 | if (fill_size == 1) | |
1000 | { | |
1001 | n_per_buf = sizeof (buf); | |
1002 | memset (buf, *fill_literal, n_per_buf); | |
1003 | } | |
1004 | else | |
1005 | { | |
1006 | char *bufp; | |
1007 | n_per_buf = sizeof(buf)/fill_size; | |
1008 | for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) | |
1009 | memcpy(bufp, fill_literal, fill_size); | |
1010 | } | |
1011 | for (; count > 0; count -= n_per_buf) | |
1012 | { | |
1013 | n_per_buf = n_per_buf > count ? count : n_per_buf; | |
1014 | x = bfd_set_section_contents (stdoutput, sec, | |
1015 | buf, (file_ptr) offset, | |
1016 | (bfd_size_type) n_per_buf * fill_size); | |
1017 | if (x != true) | |
1018 | as_fatal ("Cannot write to output file."); | |
1019 | offset += n_per_buf * fill_size; | |
1020 | } | |
1021 | } | |
d9d6f094 | 1022 | } |
43ca9aa6 | 1023 | } |
43ca9aa6 KR |
1024 | } |
1025 | #endif | |
1026 | ||
80aab579 | 1027 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
1028 | static void |
1029 | merge_data_into_text () | |
1030 | { | |
4064305e | 1031 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
1032 | seg_info (text_section)->frchainP->frch_last->fr_next = |
1033 | seg_info (data_section)->frchainP->frch_root; | |
1034 | seg_info (text_section)->frchainP->frch_last = | |
1035 | seg_info (data_section)->frchainP->frch_last; | |
1036 | seg_info (data_section)->frchainP = 0; | |
1037 | #else | |
1038 | fixS *tmp; | |
1039 | ||
1040 | text_last_frag->fr_next = data_frag_root; | |
1041 | text_last_frag = data_last_frag; | |
1042 | data_last_frag = NULL; | |
1043 | data_frag_root = NULL; | |
1044 | if (text_fix_root) | |
1045 | { | |
1046 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
1047 | tmp->fx_next = data_fix_root; | |
1048 | text_fix_tail = data_fix_tail; | |
1049 | } | |
1050 | else | |
1051 | text_fix_root = data_fix_root; | |
1052 | data_fix_root = NULL; | |
1053 | #endif | |
1054 | } | |
80aab579 | 1055 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
1056 | |
1057 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
1058 | static void | |
1059 | relax_and_size_all_segments () | |
1060 | { | |
13e9182d KR |
1061 | fragS *fragP; |
1062 | ||
b23f6743 KR |
1063 | relax_segment (text_frag_root, SEG_TEXT); |
1064 | relax_segment (data_frag_root, SEG_DATA); | |
1065 | relax_segment (bss_frag_root, SEG_BSS); | |
1066 | /* | |
1067 | * Now the addresses of frags are correct within the segment. | |
1068 | */ | |
1069 | ||
1070 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
1071 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
1072 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
1073 | ||
1074 | /* | |
1075 | * Join the 2 segments into 1 huge segment. | |
1076 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
1077 | * Then join the data frags after the text frags. | |
1078 | * | |
1079 | * Determine a_data [length of data segment]. | |
1080 | */ | |
1081 | if (data_frag_root) | |
1082 | { | |
1083 | register relax_addressT slide; | |
1084 | ||
1085 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
1086 | ||
1087 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
1088 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
1089 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
1090 | #ifdef OBJ_BOUT | |
1091 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
1092 | /* For b.out: If the data section has a strict alignment | |
1093 | requirement, its load address in the .o file will be | |
1094 | rounded up from the size of the text section. These | |
1095 | two values are *not* the same! Similarly for the bss | |
1096 | section.... */ | |
1097 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
1098 | #endif | |
1099 | ||
1100 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
1101 | { | |
1102 | fragP->fr_address += slide; | |
1103 | } /* for each data frag */ | |
1104 | ||
1105 | know (text_last_frag != 0); | |
1106 | text_last_frag->fr_next = data_frag_root; | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | H_SET_DATA_SIZE (&headers, 0); | |
1111 | } | |
1112 | ||
1113 | #ifdef OBJ_BOUT | |
1114 | /* See above comments on b.out data section address. */ | |
1115 | { | |
1116 | long bss_vma; | |
1117 | if (data_last_frag == 0) | |
1118 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
1119 | else | |
1120 | bss_vma = data_last_frag->fr_address; | |
1121 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
1122 | bss_address_frag.fr_address = bss_vma; | |
1123 | } | |
1124 | #else /* ! OBJ_BOUT */ | |
1125 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
1126 | H_GET_DATA_SIZE (&headers)); | |
1127 | ||
efa0c22e | 1128 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
1129 | |
1130 | /* Slide all the frags */ | |
1131 | if (bss_frag_root) | |
1132 | { | |
1133 | relax_addressT slide = bss_address_frag.fr_address; | |
1134 | ||
1135 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
1136 | { | |
1137 | fragP->fr_address += slide; | |
1138 | } /* for each bss frag */ | |
1139 | } | |
1140 | ||
b23f6743 KR |
1141 | if (bss_last_frag) |
1142 | H_SET_BSS_SIZE (&headers, | |
1143 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
1144 | else | |
1145 | H_SET_BSS_SIZE (&headers, 0); | |
1146 | } | |
1147 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
1148 | ||
d5364748 KR |
1149 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1150 | ||
1b96bdce | 1151 | #ifdef BFD_ASSEMBLER |
1cf7548e KR |
1152 | static void |
1153 | set_symtab () | |
1154 | { | |
1155 | int nsyms; | |
1156 | asymbol **asympp; | |
1157 | symbolS *symp; | |
1158 | boolean result; | |
1159 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); | |
1160 | ||
1161 | /* Count symbols. We can't rely on a count made by the loop in | |
1162 | write_object_file, because *_frob_file may add a new symbol or | |
1163 | two. */ | |
1164 | nsyms = 0; | |
1165 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1166 | nsyms++; | |
1167 | ||
1168 | if (nsyms) | |
1169 | { | |
1170 | int i; | |
1171 | ||
1172 | asympp = (asymbol **) bfd_alloc (stdoutput, | |
1173 | nsyms * sizeof (asymbol *)); | |
1174 | symp = symbol_rootP; | |
1175 | for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) | |
1176 | { | |
1177 | asympp[i] = symp->bsym; | |
1178 | symp->written = 1; | |
1179 | } | |
1180 | } | |
1181 | else | |
1182 | asympp = 0; | |
1183 | result = bfd_set_symtab (stdoutput, asympp, nsyms); | |
1184 | assert (result == true); | |
1185 | symbol_table_frozen = 1; | |
1186 | } | |
1b96bdce | 1187 | #endif |
1cf7548e | 1188 | |
6efd877d KR |
1189 | void |
1190 | write_object_file () | |
45432836 | 1191 | { |
741f4d66 | 1192 | struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 1193 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
741f4d66 | 1194 | fragS *fragP; /* Track along all frags. */ |
58d4951d | 1195 | #endif |
6efd877d | 1196 | |
43ca9aa6 KR |
1197 | /* Do we really want to write it? */ |
1198 | { | |
1199 | int n_warns, n_errs; | |
1200 | n_warns = had_warnings (); | |
1201 | n_errs = had_errors (); | |
1202 | /* The -Z flag indicates that an object file should be generated, | |
1203 | regardless of warnings and errors. */ | |
def66e24 | 1204 | if (flag_always_generate_output) |
43ca9aa6 KR |
1205 | { |
1206 | if (n_warns || n_errs) | |
1207 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
1208 | n_errs, n_errs == 1 ? "" : "s", | |
1209 | n_warns, n_warns == 1 ? "" : "s"); | |
1210 | } | |
1211 | else | |
1212 | { | |
1213 | if (n_errs) | |
1214 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
1215 | n_errs, n_errs == 1 ? "" : "s", | |
1216 | n_warns, n_warns == 1 ? "" : "s"); | |
1217 | } | |
1218 | } | |
1219 | ||
3eb802b5 | 1220 | #ifdef OBJ_VMS |
1cf7548e KR |
1221 | /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call |
1222 | a routine to check for the definition of the procedure "_main", | |
1223 | and if so -- fix it up so that it can be program entry point. */ | |
8e86815b | 1224 | vms_check_for_main (); |
3f81f3cf | 1225 | #endif /* OBJ_VMS */ |
43ca9aa6 KR |
1226 | |
1227 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
1228 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
1229 | frag that requires least thought. ".align" frags like to have a | |
1230 | following frag since that makes calculating their intended length | |
1231 | trivial. | |
1232 | ||
1233 | @@ Is this really necessary?? */ | |
3eb802b5 | 1234 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 1235 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 1236 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 1237 | #else |
f2f7d044 | 1238 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 1239 | #endif |
3eb802b5 | 1240 | #endif |
6efd877d KR |
1241 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
1242 | { | |
43ca9aa6 | 1243 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 1244 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
1245 | /* frag_align will have left a new frag. |
1246 | Use this last frag for an empty ".fill". | |
1247 | ||
1248 | For this segment ... | |
1249 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
1250 | frag_wane (frag_now); |
1251 | frag_now->fr_fix = 0; | |
1252 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 1253 | } |
6efd877d | 1254 | |
43ca9aa6 KR |
1255 | /* From now on, we don't care about sub-segments. Build one frag chain |
1256 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 1257 | |
43ca9aa6 KR |
1258 | #ifdef BFD_ASSEMBLER |
1259 | /* Remove the sections created by gas for its own purposes. */ | |
1260 | { | |
1261 | asection **seclist, *sec; | |
a55774a1 KR |
1262 | int i; |
1263 | ||
43ca9aa6 KR |
1264 | seclist = &stdoutput->sections; |
1265 | while (seclist && *seclist) | |
1266 | { | |
1267 | sec = *seclist; | |
5ac34ac3 | 1268 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1269 | { |
1270 | sec = sec->next; | |
1271 | *seclist = sec; | |
1272 | stdoutput->section_count--; | |
1273 | if (!sec) | |
1274 | break; | |
1275 | } | |
1276 | if (*seclist) | |
1277 | seclist = &(*seclist)->next; | |
1278 | } | |
a55774a1 KR |
1279 | i = 0; |
1280 | bfd_map_over_sections (stdoutput, renumber_sections, &i); | |
43ca9aa6 KR |
1281 | } |
1282 | ||
1283 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1284 | #else | |
6efd877d KR |
1285 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1286 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1287 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1288 | #endif |
6efd877d | 1289 | |
43ca9aa6 KR |
1290 | /* We have two segments. If user gave -R flag, then we must put the |
1291 | data frags into the text segment. Do this before relaxing so | |
1292 | we know to take advantage of -R and make shorter addresses. */ | |
1293 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
def66e24 | 1294 | if (flag_readonly_data_in_text) |
6efd877d | 1295 | { |
b23f6743 | 1296 | merge_data_into_text (); |
6efd877d KR |
1297 | } |
1298 | #endif | |
43ca9aa6 KR |
1299 | |
1300 | #ifdef BFD_ASSEMBLER | |
1301 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1302 | #else | |
b23f6743 | 1303 | relax_and_size_all_segments (); |
43ca9aa6 | 1304 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1305 | |
43ca9aa6 | 1306 | #ifndef BFD_ASSEMBLER |
6efd877d | 1307 | /* |
7f2cb270 KR |
1308 | * |
1309 | * Crawl the symbol chain. | |
1310 | * | |
1311 | * For each symbol whose value depends on a frag, take the address of | |
1312 | * that frag and subsume it into the value of the symbol. | |
1313 | * After this, there is just one way to lookup a symbol value. | |
1314 | * Values are left in their final state for object file emission. | |
1315 | * We adjust the values of 'L' local symbols, even if we do | |
1316 | * not intend to emit them to the object file, because their values | |
1317 | * are needed for fix-ups. | |
1318 | * | |
1319 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1320 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1321 | * | |
1322 | * Count the remaining symbols. | |
1323 | * Assign a symbol number to each symbol. | |
1324 | * Count the number of string-table chars we will emit. | |
1325 | * Put this info into the headers as appropriate. | |
1326 | * | |
1327 | */ | |
6efd877d KR |
1328 | know (zero_address_frag.fr_address == 0); |
1329 | string_byte_count = sizeof (string_byte_count); | |
1330 | ||
1331 | obj_crawl_symbol_chain (&headers); | |
1332 | ||
1333 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1334 | string_byte_count = 0; |
6efd877d KR |
1335 | |
1336 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1337 | ||
1338 | /* | |
7f2cb270 KR |
1339 | * Addresses of frags now reflect addresses we use in the object file. |
1340 | * Symbol values are correct. | |
1341 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1342 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1343 | */ | |
6efd877d KR |
1344 | subseg_change (SEG_TEXT, 0); |
1345 | ||
1346 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1347 | { | |
d4083e29 | 1348 | cvt_frag_to_fill (&headers, SEG_TEXT, fragP); |
6efd877d | 1349 | |
43ca9aa6 KR |
1350 | /* Some assert macros don't work with # directives mixed in. */ |
1351 | #ifndef NDEBUG | |
1352 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1353 | #ifdef OBJ_BOUT |
43ca9aa6 | 1354 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1355 | #endif |
6efd877d | 1356 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1357 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1358 | abort (); | |
1359 | #endif | |
1360 | } | |
1361 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1362 | |
fecd2382 | 1363 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1364 | { |
1365 | struct broken_word *lie; | |
1366 | struct broken_word **prevP; | |
1367 | ||
1368 | prevP = &broken_words; | |
1369 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1370 | if (!lie->added) | |
a39116f1 | 1371 | { |
5ac34ac3 ILT |
1372 | expressionS exp; |
1373 | ||
1374 | exp.X_op = O_subtract; | |
1375 | exp.X_add_symbol = lie->add; | |
1376 | exp.X_op_symbol = lie->sub; | |
1377 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1378 | #ifdef BFD_ASSEMBLER |
d9d6f094 KR |
1379 | #ifdef TC_CONS_FIX_NEW |
1380 | TC_CONS_FIX_NEW (lie->frag, | |
1381 | lie->word_goes_here - lie->frag->fr_literal, | |
1382 | 2, &exp); | |
1383 | #else | |
5ac34ac3 ILT |
1384 | fix_new_exp (lie->frag, |
1385 | lie->word_goes_here - lie->frag->fr_literal, | |
1386 | 2, &exp, 0, BFD_RELOC_NONE); | |
d9d6f094 | 1387 | #endif |
43ca9aa6 KR |
1388 | #else |
1389 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1390 | fix_new_exp (lie->frag, |
1391 | lie->word_goes_here - lie->frag->fr_literal, | |
1392 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1393 | #else |
fecd2382 | 1394 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1395 | fix_new_ns32k_exp (lie->frag, |
1396 | lie->word_goes_here - lie->frag->fr_literal, | |
1397 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1398 | #else |
5ac34ac3 ILT |
1399 | fix_new_exp (lie->frag, |
1400 | lie->word_goes_here - lie->frag->fr_literal, | |
1401 | 2, &exp, 0, 0); | |
fecd2382 | 1402 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1403 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1404 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1405 | *prevP = lie->next_broken_word; |
a39116f1 | 1406 | } |
6efd877d KR |
1407 | else |
1408 | prevP = &(lie->next_broken_word); | |
1409 | ||
1410 | for (lie = broken_words; lie;) | |
1411 | { | |
1412 | struct broken_word *untruth; | |
1413 | char *table_ptr; | |
d5364748 KR |
1414 | addressT table_addr; |
1415 | addressT from_addr, to_addr; | |
6efd877d KR |
1416 | int n, m; |
1417 | ||
6efd877d KR |
1418 | fragP = lie->dispfrag; |
1419 | ||
43ca9aa6 | 1420 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1421 | n = 0; |
1422 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1423 | if (untruth->added == 1) | |
1424 | n++; | |
1425 | ||
1426 | table_ptr = lie->dispfrag->fr_opcode; | |
1427 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1428 | /* Create the jump around the long jumps. This is a short |
1429 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1430 | from_addr = table_addr; |
1431 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1432 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1433 | table_ptr += md_short_jump_size; | |
1434 | table_addr += md_short_jump_size; | |
1435 | ||
1436 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1437 | { | |
1438 | if (lie->added == 2) | |
1439 | continue; | |
1440 | /* Patch the jump table */ | |
1441 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1442 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
d9d6f094 KR |
1443 | #ifdef BFD_ASSEMBLER |
1444 | to_addr -= lie->sub->sy_frag->fr_address; | |
1445 | #endif | |
6efd877d KR |
1446 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1447 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1448 | { | |
1449 | if (untruth->use_jump == lie) | |
1450 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1451 | } | |
1452 | ||
1453 | /* Install the long jump */ | |
1454 | /* this is a long jump from table_ptr+0 to the final target */ | |
1455 | from_addr = table_addr; | |
1456 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
d9d6f094 KR |
1457 | #ifdef BFD_ASSEMBLER |
1458 | to_addr += lie->add->sy_frag->fr_address; | |
1459 | #endif | |
6efd877d KR |
1460 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); |
1461 | table_ptr += md_long_jump_size; | |
1462 | table_addr += md_long_jump_size; | |
1463 | } | |
1464 | } | |
1465 | } | |
fecd2382 | 1466 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1467 | |
43ca9aa6 | 1468 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1469 | #ifndef OBJ_VMS |
6efd877d | 1470 | { /* not vms */ |
3f81f3cf | 1471 | char *the_object_file; |
1cf7548e | 1472 | long object_file_size; |
6efd877d | 1473 | /* |
3eb802b5 ILT |
1474 | * Scan every FixS performing fixups. We had to wait until now to do |
1475 | * this because md_convert_frag() may have made some fixSs. | |
1476 | */ | |
6efd877d KR |
1477 | int trsize, drsize; |
1478 | ||
1479 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1480 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1481 | subseg_change (SEG_DATA, 0); |
d5364748 | 1482 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1483 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1484 | ||
1485 | /* FIXME move this stuff into the pre-write-hook */ | |
1486 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1487 | H_SET_ENTRY_POINT (&headers, 0); | |
1488 | ||
1489 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1490 | |
1491 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1492 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1493 | ||
1494 | output_file_create (out_file_name); | |
1495 | ||
1496 | obj_header_append (&next_object_file_charP, &headers); | |
1497 | ||
1498 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1499 | ||
1500 | /* | |
43ca9aa6 KR |
1501 | * Emit code. |
1502 | */ | |
6efd877d KR |
1503 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1504 | { | |
1505 | register long count; | |
1506 | register char *fill_literal; | |
1507 | register long fill_size; | |
1508 | ||
c151fd1e | 1509 | PROGRESS (1); |
6efd877d KR |
1510 | know (fragP->fr_type == rs_fill); |
1511 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1512 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1513 | fill_size = fragP->fr_var; | |
1514 | know (fragP->fr_offset >= 0); | |
1515 | ||
1516 | for (count = fragP->fr_offset; count; count--) | |
1517 | { | |
1518 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1519 | } /* for each */ | |
1520 | ||
1521 | } /* for each code frag. */ | |
1522 | ||
1523 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1524 | ||
1525 | /* | |
43ca9aa6 KR |
1526 | * Emit relocations. |
1527 | */ | |
6efd877d KR |
1528 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
1529 | 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 | 1530 | #ifdef TC_I960 |
6efd877d | 1531 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1532 | * first data fragment, not end of last text fragment: alignment of the |
1533 | * start of the data segment may place a gap between the segments. | |
1534 | */ | |
6efd877d | 1535 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1536 | #else /* TC_I960 */ |
6efd877d | 1537 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1538 | #endif /* TC_I960 */ |
6efd877d KR |
1539 | |
1540 | 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))); | |
1541 | ||
1542 | /* | |
43ca9aa6 KR |
1543 | * Emit line number entries. |
1544 | */ | |
6efd877d KR |
1545 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1546 | 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))); | |
1547 | ||
1548 | /* | |
3eb802b5 ILT |
1549 | * Emit symbols. |
1550 | */ | |
6efd877d KR |
1551 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1552 | 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))); | |
1553 | ||
1554 | /* | |
3eb802b5 ILT |
1555 | * Emit strings. |
1556 | */ | |
6efd877d KR |
1557 | |
1558 | if (string_byte_count > 0) | |
1559 | { | |
1560 | obj_emit_strings (&next_object_file_charP); | |
1561 | } /* only if we have a string table */ | |
1562 | ||
45432836 | 1563 | #ifdef BFD_HEADERS |
6efd877d KR |
1564 | bfd_seek (stdoutput, 0, 0); |
1565 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1566 | #else |
6efd877d KR |
1567 | |
1568 | /* Write the data to the file */ | |
1569 | output_file_append (the_object_file, object_file_size, out_file_name); | |
3f81f3cf | 1570 | free (the_object_file); |
45432836 | 1571 | #endif |
6efd877d | 1572 | } /* non vms output */ |
3f81f3cf | 1573 | #else /* OBJ_VMS */ |
6efd877d | 1574 | /* |
3eb802b5 ILT |
1575 | * Now do the VMS-dependent part of writing the object file |
1576 | */ | |
8e86815b | 1577 | vms_write_object_file (H_GET_TEXT_SIZE (&headers), |
85825401 ILT |
1578 | H_GET_DATA_SIZE (&headers), |
1579 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1580 | text_frag_root, data_frag_root); |
3f81f3cf | 1581 | #endif /* OBJ_VMS */ |
43ca9aa6 | 1582 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1583 | |
4acf8c78 KR |
1584 | /* Resolve symbol values. This needs to be done before processing |
1585 | the relocations. */ | |
1586 | if (symbol_rootP) | |
1587 | { | |
1588 | symbolS *symp; | |
1589 | ||
1590 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1591 | if (!symp->sy_resolved) | |
1592 | resolve_symbol_value (symp); | |
1593 | } | |
1594 | ||
c151fd1e KR |
1595 | PROGRESS (1); |
1596 | ||
d5364748 KR |
1597 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1598 | ||
43ca9aa6 KR |
1599 | /* Set up symbol table, and write it out. */ |
1600 | if (symbol_rootP) | |
1601 | { | |
43ca9aa6 KR |
1602 | symbolS *symp; |
1603 | ||
1604 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1605 | { | |
262b22cd | 1606 | int punt = 0; |
c151fd1e KR |
1607 | const char *name; |
1608 | ||
1356d77d ILT |
1609 | if (symp->sy_mri_common) |
1610 | { | |
1611 | if (S_IS_EXTERNAL (symp)) | |
1612 | as_bad ("%s: global symbols not supported in common sections", | |
1613 | S_GET_NAME (symp)); | |
1614 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1615 | continue; | |
1616 | } | |
1617 | ||
c151fd1e KR |
1618 | name = S_GET_NAME (symp); |
1619 | if (name) | |
1620 | { | |
a2a5a4fa | 1621 | const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); |
c151fd1e KR |
1622 | /* They only differ if `name' is a fb or dollar local |
1623 | label name. */ | |
1624 | if (name2 != name && ! S_IS_DEFINED (symp)) | |
1625 | as_bad ("local label %s is not defined", name2); | |
1626 | } | |
262b22cd | 1627 | |
4acf8c78 KR |
1628 | /* Do it again, because adjust_reloc_syms might introduce |
1629 | more symbols. They'll probably only be section symbols, | |
1630 | but they'll still need to have the values computed. */ | |
5868b1fe ILT |
1631 | if (! symp->sy_resolved) |
1632 | { | |
5ac34ac3 | 1633 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1634 | { |
1635 | /* This is the normal case; skip the call. */ | |
1636 | S_SET_VALUE (symp, | |
1637 | (S_GET_VALUE (symp) | |
1638 | + symp->sy_frag->fr_address)); | |
1639 | symp->sy_resolved = 1; | |
1640 | } | |
1641 | else | |
1642 | resolve_symbol_value (symp); | |
1643 | } | |
1644 | ||
43ca9aa6 KR |
1645 | /* So far, common symbols have been treated like undefined symbols. |
1646 | Put them in the common section now. */ | |
1647 | if (S_IS_DEFINED (symp) == 0 | |
1648 | && S_GET_VALUE (symp) != 0) | |
d9d6f094 | 1649 | S_SET_SEGMENT (symp, bfd_com_section_ptr); |
43ca9aa6 | 1650 | #if 0 |
5868b1fe | 1651 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1652 | S_GET_NAME (symp), symp, |
1653 | S_GET_VALUE (symp), | |
d5364748 | 1654 | symp->bsym->flags, |
43ca9aa6 KR |
1655 | segment_name (symp->bsym->section)); |
1656 | #endif | |
335d35c8 | 1657 | |
80aab579 | 1658 | #ifdef obj_frob_symbol |
262b22cd | 1659 | obj_frob_symbol (symp, punt); |
43ca9aa6 KR |
1660 | #endif |
1661 | #ifdef tc_frob_symbol | |
262b22cd | 1662 | if (! punt || symp->sy_used_in_reloc) |
335d35c8 | 1663 | tc_frob_symbol (symp, punt); |
43ca9aa6 | 1664 | #endif |
80aab579 | 1665 | |
262b22cd ILT |
1666 | /* If we don't want to keep this symbol, splice it out of |
1667 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1668 | want section symbols. Otherwise, we skip local symbols | |
1669 | and symbols that the frob_symbol macros told us to punt, | |
1670 | but we keep such symbols if they are used in relocs. */ | |
1671 | if ((! EMIT_SECTION_SYMBOLS | |
1672 | && (symp->bsym->flags & BSF_SECTION_SYM) != 0) | |
1cf7548e KR |
1673 | /* Note that S_IS_EXTERN and S_IS_LOCAL are not always |
1674 | opposites. Sometimes the former checks flags and the | |
1675 | latter examines the name... */ | |
1676 | || (!S_IS_EXTERN (symp) | |
1677 | && (S_IS_LOCAL (symp) || punt) | |
262b22cd | 1678 | && ! symp->sy_used_in_reloc)) |
43ca9aa6 | 1679 | { |
1cf7548e KR |
1680 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); |
1681 | /* After symbol_remove, symbol_next(symp) still returns | |
1682 | the one that came after it in the chain. So we don't | |
1683 | need to do any extra cleanup work here. */ | |
262b22cd | 1684 | |
262b22cd | 1685 | continue; |
43ca9aa6 | 1686 | } |
85051959 | 1687 | |
80aab579 ILT |
1688 | /* Make sure we really got a value for the symbol. */ |
1689 | if (! symp->sy_resolved) | |
1690 | { | |
1691 | as_bad ("can't resolve value for symbol \"%s\"", | |
1692 | S_GET_NAME (symp)); | |
1693 | symp->sy_resolved = 1; | |
1694 | } | |
1695 | ||
85051959 ILT |
1696 | /* Set the value into the BFD symbol. Up til now the value |
1697 | has only been kept in the gas symbolS struct. */ | |
1698 | symp->bsym->value = S_GET_VALUE (symp); | |
43ca9aa6 KR |
1699 | } |
1700 | } | |
1701 | ||
c151fd1e KR |
1702 | PROGRESS (1); |
1703 | ||
def66e24 DM |
1704 | /* Now do any format-specific adjustments to the symbol table, such |
1705 | as adding file symbols. */ | |
1706 | #ifdef obj_adjust_symtab | |
1707 | obj_adjust_symtab (); | |
1708 | #endif | |
1709 | ||
1710 | /* Now that all the sizes are known, and contents correct, we can | |
1711 | start writing to the file. */ | |
1712 | set_symtab (); | |
1713 | ||
1cf7548e KR |
1714 | /* If *_frob_file changes the symbol value at this point, it is |
1715 | responsible for moving the changed value into symp->bsym->value | |
1716 | as well. Hopefully all symbol value changing can be done in | |
1717 | *_frob_symbol. */ | |
c79e67a3 KR |
1718 | #ifdef tc_frob_file |
1719 | tc_frob_file (); | |
1720 | #endif | |
f2f7d044 ILT |
1721 | #ifdef obj_frob_file |
1722 | obj_frob_file (); | |
1723 | #endif | |
1724 | ||
8d6c34a1 KR |
1725 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1726 | ||
43ca9aa6 | 1727 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1728 | #endif /* BFD_ASSEMBLER */ |
1729 | } | |
d5364748 | 1730 | #endif /* ! BFD */ |
fecd2382 RP |
1731 | |
1732 | /* | |
1733 | * relax_segment() | |
1734 | * | |
1735 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1736 | * values. | |
1737 | * | |
1738 | * Relax the frags. | |
1739 | * | |
1740 | * After this, all frags in this segment have addresses that are correct | |
1741 | * within the segment. Since segments live in different file addresses, | |
1742 | * these frag addresses may not be the same as final object-file addresses. | |
1743 | */ | |
45432836 | 1744 | |
a58374d7 ILT |
1745 | #ifndef md_relax_frag |
1746 | ||
d5364748 | 1747 | /* Subroutines of relax_segment. */ |
43ca9aa6 KR |
1748 | static int |
1749 | is_dnrange (f1, f2) | |
1750 | struct frag *f1; | |
1751 | struct frag *f2; | |
1752 | { | |
1753 | for (; f1; f1 = f1->fr_next) | |
1754 | if (f1->fr_next == f2) | |
1755 | return 1; | |
1756 | return 0; | |
1757 | } | |
1758 | ||
a58374d7 ILT |
1759 | #endif /* ! defined (md_relax_frag) */ |
1760 | ||
43ca9aa6 | 1761 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1762 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1763 | static relax_addressT |
1764 | relax_align (address, alignment) | |
1765 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1766 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1767 | { |
1768 | relax_addressT mask; | |
1769 | relax_addressT new_address; | |
1770 | ||
1771 | mask = ~((~0) << alignment); | |
1772 | new_address = (address + mask) & (~mask); | |
d4083e29 | 1773 | #ifdef LINKER_RELAXING_SHRINKS_ONLY |
43ca9aa6 KR |
1774 | if (linkrelax) |
1775 | /* We must provide lots of padding, so the linker can discard it | |
1776 | when needed. The linker will not add extra space, ever. */ | |
1777 | new_address += (1 << alignment); | |
d4083e29 | 1778 | #endif |
43ca9aa6 KR |
1779 | return (new_address - address); |
1780 | } | |
45432836 | 1781 | |
6efd877d KR |
1782 | void |
1783 | relax_segment (segment_frag_root, segment) | |
1784 | struct frag *segment_frag_root; | |
43ca9aa6 | 1785 | segT segment; |
fecd2382 | 1786 | { |
6efd877d KR |
1787 | register struct frag *fragP; |
1788 | register relax_addressT address; | |
43ca9aa6 | 1789 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1790 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1791 | #endif |
6efd877d KR |
1792 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1793 | subseg_change (segment, 0); | |
1794 | ||
7f2cb270 KR |
1795 | /* For each frag in segment: count and store (a 1st guess of) |
1796 | fr_address. */ | |
6efd877d KR |
1797 | address = 0; |
1798 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1799 | { | |
1800 | fragP->fr_address = address; | |
1801 | address += fragP->fr_fix; | |
1802 | ||
1803 | switch (fragP->fr_type) | |
1804 | { | |
1805 | case rs_fill: | |
1806 | address += fragP->fr_offset * fragP->fr_var; | |
1807 | break; | |
1808 | ||
1809 | case rs_align: | |
cd3b81bd | 1810 | case rs_align_code: |
98c6bbbe KR |
1811 | { |
1812 | int offset = relax_align (address, (int) fragP->fr_offset); | |
1813 | if (offset % fragP->fr_var != 0) | |
1814 | { | |
262b22cd ILT |
1815 | as_bad ("alignment padding (%d bytes) not a multiple of %ld", |
1816 | offset, (long) fragP->fr_var); | |
98c6bbbe KR |
1817 | offset -= (offset % fragP->fr_var); |
1818 | } | |
1819 | address += offset; | |
1820 | } | |
6efd877d KR |
1821 | break; |
1822 | ||
1823 | case rs_org: | |
cd3b81bd | 1824 | case rs_space: |
7f2cb270 | 1825 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1826 | break; |
1827 | ||
1828 | case rs_machine_dependent: | |
1829 | address += md_estimate_size_before_relax (fragP, segment); | |
1830 | break; | |
1831 | ||
fecd2382 | 1832 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1833 | /* Broken words don't concern us yet */ |
1834 | case rs_broken_word: | |
1835 | break; | |
fecd2382 | 1836 | #endif |
6efd877d KR |
1837 | |
1838 | default: | |
1839 | BAD_CASE (fragP->fr_type); | |
1840 | break; | |
1841 | } /* switch(fr_type) */ | |
1842 | } /* for each frag in the segment */ | |
1843 | ||
7f2cb270 | 1844 | /* Do relax(). */ |
6efd877d | 1845 | { |
7f2cb270 | 1846 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1847 | /* Cumulative number of addresses we have */ |
1848 | /* relaxed this pass. */ | |
1849 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1850 | long stretched; /* Have we stretched on this pass? */ |
1851 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1852 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1853 | we could be scrod. */ | |
6efd877d KR |
1854 | |
1855 | do | |
1856 | { | |
1857 | stretch = stretched = 0; | |
1858 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1859 | { | |
7f2cb270 KR |
1860 | long growth = 0; |
1861 | unsigned long was_address; | |
1862 | long offset; | |
1863 | symbolS *symbolP; | |
1864 | long target; | |
1865 | long after; | |
6efd877d KR |
1866 | |
1867 | was_address = fragP->fr_address; | |
1868 | address = fragP->fr_address += stretch; | |
1869 | symbolP = fragP->fr_symbol; | |
1870 | offset = fragP->fr_offset; | |
6efd877d KR |
1871 | |
1872 | switch (fragP->fr_type) | |
1873 | { | |
1874 | case rs_fill: /* .fill never relaxes. */ | |
1875 | growth = 0; | |
1876 | break; | |
1877 | ||
fecd2382 | 1878 | #ifndef WORKING_DOT_WORD |
6efd877d | 1879 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1880 | for it I do not want to write it. I do not want to have |
1881 | anything to do with it. This is not the proper way to | |
1882 | implement this misfeature. */ | |
6efd877d KR |
1883 | case rs_broken_word: |
1884 | { | |
1885 | struct broken_word *lie; | |
1886 | struct broken_word *untruth; | |
6efd877d KR |
1887 | |
1888 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
1889 | in the symbol slot). Still, this whole chunk of |
1890 | code is ugly, and I don't feel like doing anything | |
1891 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
1892 | growth = 0; |
1893 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
1894 | lie && lie->dispfrag == fragP; | |
1895 | lie = lie->next_broken_word) | |
1896 | { | |
1897 | ||
1898 | if (lie->added) | |
1899 | continue; | |
1900 | ||
7f2cb270 KR |
1901 | offset = (lie->add->sy_frag->fr_address |
1902 | + S_GET_VALUE (lie->add) | |
1903 | + lie->addnum | |
1904 | - (lie->sub->sy_frag->fr_address | |
1905 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
1906 | if (offset <= -32768 || offset >= 32767) |
1907 | { | |
def66e24 | 1908 | if (flag_warn_displacement) |
d5364748 KR |
1909 | { |
1910 | char buf[50]; | |
80aab579 | 1911 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
1912 | as_warn (".word %s-%s+%s didn't fit", |
1913 | S_GET_NAME (lie->add), | |
1914 | S_GET_NAME (lie->sub), | |
1915 | buf); | |
1916 | } | |
6efd877d KR |
1917 | lie->added = 1; |
1918 | if (fragP->fr_subtype == 0) | |
1919 | { | |
1920 | fragP->fr_subtype++; | |
1921 | growth += md_short_jump_size; | |
1922 | } | |
7f2cb270 KR |
1923 | for (untruth = lie->next_broken_word; |
1924 | untruth && untruth->dispfrag == lie->dispfrag; | |
1925 | untruth = untruth->next_broken_word) | |
6efd877d KR |
1926 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
1927 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
1928 | { | |
1929 | untruth->added = 2; | |
1930 | untruth->use_jump = lie; | |
1931 | } | |
1932 | growth += md_long_jump_size; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | break; | |
1937 | } /* case rs_broken_word */ | |
fecd2382 | 1938 | #endif |
6efd877d | 1939 | case rs_align: |
cd3b81bd | 1940 | case rs_align_code: |
43ca9aa6 KR |
1941 | growth = (relax_align ((relax_addressT) (address |
1942 | + fragP->fr_fix), | |
d5364748 | 1943 | (int) offset) |
43ca9aa6 KR |
1944 | - relax_align ((relax_addressT) (was_address |
1945 | + fragP->fr_fix), | |
d5364748 | 1946 | (int) offset)); |
6efd877d KR |
1947 | break; |
1948 | ||
1949 | case rs_org: | |
1950 | target = offset; | |
1951 | ||
1952 | if (symbolP) | |
1953 | { | |
43ca9aa6 KR |
1954 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
1955 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
1956 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
1957 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
1958 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 1959 | know (symbolP->sy_frag); |
43ca9aa6 KR |
1960 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
1961 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 1962 | #endif |
6efd877d KR |
1963 | target += S_GET_VALUE (symbolP) |
1964 | + symbolP->sy_frag->fr_address; | |
1965 | } /* if we have a symbol */ | |
1966 | ||
1967 | know (fragP->fr_next); | |
1968 | after = fragP->fr_next->fr_address; | |
c151fd1e KR |
1969 | growth = target - after; |
1970 | if (growth < 0) | |
1971 | { | |
1972 | /* Growth may be negative, but variable part of frag | |
1973 | cannot have fewer than 0 chars. That is, we can't | |
1974 | .org backwards. */ | |
1975 | as_bad ("attempt to .org backwards ignored"); | |
1976 | growth = 0; | |
1977 | } | |
6efd877d KR |
1978 | |
1979 | growth -= stretch; /* This is an absolute growth factor */ | |
1980 | break; | |
1981 | ||
cd3b81bd KR |
1982 | case rs_space: |
1983 | if (symbolP) | |
1984 | { | |
1985 | growth = S_GET_VALUE (symbolP); | |
1986 | if (symbolP->sy_frag != &zero_address_frag) | |
1987 | as_bad (".space specifies non-absolute value"); | |
1988 | fragP->fr_symbol = 0; | |
1989 | if (growth < 0) | |
1990 | { | |
1991 | as_warn (".space or .fill with negative value, ignored"); | |
1992 | growth = 0; | |
1993 | } | |
1994 | } | |
1995 | else | |
1996 | growth = 0; | |
1997 | break; | |
1998 | ||
6efd877d | 1999 | case rs_machine_dependent: |
a58374d7 ILT |
2000 | #ifdef md_relax_frag |
2001 | growth = md_relax_frag (fragP, stretch); | |
2002 | #else | |
c151fd1e | 2003 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 ILT |
2004 | /* The default way to relax a frag is to look through |
2005 | md_relax_table. */ | |
6efd877d | 2006 | { |
7f2cb270 KR |
2007 | const relax_typeS *this_type; |
2008 | const relax_typeS *start_type; | |
2009 | relax_substateT next_state; | |
2010 | relax_substateT this_state; | |
80aab579 | 2011 | long aim; |
c151fd1e | 2012 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; |
6efd877d | 2013 | |
7f2cb270 | 2014 | this_state = fragP->fr_subtype; |
c151fd1e | 2015 | start_type = this_type = table + this_state; |
6efd877d KR |
2016 | target = offset; |
2017 | ||
2018 | if (symbolP) | |
2019 | { | |
80aab579 | 2020 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
2021 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
2022 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2023 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2024 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
2025 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 2026 | #endif |
6efd877d | 2027 | know (symbolP->sy_frag); |
80aab579 | 2028 | #endif |
43ca9aa6 KR |
2029 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
2030 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
2031 | target += |
2032 | S_GET_VALUE (symbolP) | |
2033 | + symbolP->sy_frag->fr_address; | |
2034 | ||
2035 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
2036 | assume it will move by STRETCH just as we did. |
2037 | If this is not so, it will be because some frag | |
d5364748 KR |
2038 | between grows, and that will force another pass. |
2039 | ||
2040 | Beware zero-length frags. | |
2041 | ||
2042 | There should be a faster way to do this. */ | |
6efd877d KR |
2043 | |
2044 | if (symbolP->sy_frag->fr_address >= was_address | |
2045 | && is_dnrange (fragP, symbolP->sy_frag)) | |
2046 | { | |
2047 | target += stretch; | |
7f2cb270 | 2048 | } |
d5364748 | 2049 | } |
6efd877d KR |
2050 | |
2051 | aim = target - address - fragP->fr_fix; | |
d9d6f094 KR |
2052 | #ifdef TC_PCREL_ADJUST |
2053 | /* Currently only the ns32k family needs this */ | |
2054 | aim += TC_PCREL_ADJUST(fragP); | |
2055 | #else | |
2056 | /* This machine doesn't want to use pcrel_adjust. | |
2057 | In that case, pcrel_adjust should be zero. */ | |
2058 | assert (fragP->fr_pcrel_adjust == 0); | |
d5364748 | 2059 | #endif |
6efd877d KR |
2060 | |
2061 | if (aim < 0) | |
2062 | { | |
2063 | /* Look backwards. */ | |
2064 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2065 | if (aim >= this_type->rlx_backward) |
2066 | next_state = 0; | |
2067 | else | |
2068 | { | |
2069 | /* Grow to next state. */ | |
2070 | this_state = next_state; | |
c151fd1e | 2071 | this_type = table + this_state; |
7f2cb270 KR |
2072 | next_state = this_type->rlx_more; |
2073 | } | |
6efd877d KR |
2074 | } |
2075 | else | |
2076 | { | |
a39116f1 | 2077 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 2078 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 2079 | #endif |
6efd877d KR |
2080 | /* Look forwards. */ |
2081 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2082 | if (aim <= this_type->rlx_forward) |
2083 | next_state = 0; | |
2084 | else | |
2085 | { | |
2086 | /* Grow to next state. */ | |
2087 | this_state = next_state; | |
c151fd1e | 2088 | this_type = table + this_state; |
7f2cb270 KR |
2089 | next_state = this_type->rlx_more; |
2090 | } | |
6efd877d KR |
2091 | } |
2092 | ||
7f2cb270 KR |
2093 | growth = this_type->rlx_length - start_type->rlx_length; |
2094 | if (growth != 0) | |
6efd877d | 2095 | fragP->fr_subtype = this_state; |
7f2cb270 | 2096 | } |
c151fd1e | 2097 | #endif /* TC_GENERIC_RELAX_TABLE */ |
a58374d7 | 2098 | #endif |
7f2cb270 | 2099 | break; |
6efd877d KR |
2100 | |
2101 | default: | |
2102 | BAD_CASE (fragP->fr_type); | |
2103 | break; | |
2104 | } | |
2105 | if (growth) | |
2106 | { | |
2107 | stretch += growth; | |
2108 | stretched++; | |
2109 | } | |
2110 | } /* For each frag in the segment. */ | |
2111 | } | |
2112 | while (stretched); /* Until nothing further to relax. */ | |
2113 | } /* do_relax */ | |
2114 | ||
2115 | /* | |
7f2cb270 KR |
2116 | * We now have valid fr_address'es for each frag. |
2117 | */ | |
6efd877d KR |
2118 | |
2119 | /* | |
7f2cb270 KR |
2120 | * All fr_address's are correct, relative to their own segment. |
2121 | * We have made all the fixS we will ever make. | |
2122 | */ | |
6efd877d | 2123 | } /* relax_segment() */ |
fecd2382 | 2124 | |
3f81f3cf | 2125 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
80aab579 | 2126 | |
d9d6f094 KR |
2127 | #ifndef TC_RELOC_RTSYM_LOC_FIXUP |
2128 | #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1) | |
2129 | #endif | |
2130 | ||
fecd2382 | 2131 | /* fixup_segment() |
6efd877d | 2132 | |
fecd2382 RP |
2133 | Go through all the fixS's in a segment and see which ones can be |
2134 | handled now. (These consist of fixS where we have since discovered | |
2135 | the value of a symbol, or the address of the frag involved.) | |
2136 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 2137 | |
fecd2382 RP |
2138 | Result is a count of how many relocation structs will be needed to |
2139 | handle the remaining fixS's that we couldn't completely handle here. | |
2140 | These will be output later by emit_relocations(). */ | |
2141 | ||
09952cd9 | 2142 | static long |
6efd877d | 2143 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 2144 | register fixS *fixP; |
6efd877d | 2145 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 2146 | { |
f5c32424 KR |
2147 | long seg_reloc_count = 0; |
2148 | symbolS *add_symbolP; | |
2149 | symbolS *sub_symbolP; | |
d5364748 | 2150 | valueT add_number; |
f5c32424 KR |
2151 | int size; |
2152 | char *place; | |
2153 | long where; | |
a55774a1 | 2154 | int pcrel, plt; |
f5c32424 KR |
2155 | fragS *fragP; |
2156 | segT add_symbol_segment = absolute_section; | |
2157 | ||
2158 | /* If the linker is doing the relaxing, we must not do any fixups. | |
2159 | ||
2160 | Well, strictly speaking that's not true -- we could do any that are | |
2161 | PC-relative and don't cross regions that could change size. And for the | |
2162 | i960 (the only machine for which we've got a relaxing linker right now), | |
2163 | we might be able to turn callx/callj into bal anyways in cases where we | |
2164 | know the maximum displacement. */ | |
6efd877d | 2165 | if (linkrelax) |
f5c32424 KR |
2166 | { |
2167 | for (; fixP; fixP = fixP->fx_next) | |
2168 | seg_reloc_count++; | |
2169 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2170 | return seg_reloc_count; | |
2171 | } | |
6efd877d | 2172 | |
f5c32424 KR |
2173 | for (; fixP; fixP = fixP->fx_next) |
2174 | { | |
a55774a1 KR |
2175 | #ifdef DEBUG5 |
2176 | fprintf (stderr, "\nprocessing fixup:\n"); | |
2177 | print_fixup (fixP); | |
2178 | #endif | |
2179 | ||
f5c32424 KR |
2180 | fragP = fixP->fx_frag; |
2181 | know (fragP); | |
2182 | where = fixP->fx_where; | |
2183 | place = fragP->fr_literal + where; | |
2184 | size = fixP->fx_size; | |
2185 | add_symbolP = fixP->fx_addsy; | |
2186 | #ifdef TC_VALIDATE_FIX | |
2187 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 2188 | #endif |
f5c32424 KR |
2189 | sub_symbolP = fixP->fx_subsy; |
2190 | add_number = fixP->fx_offset; | |
2191 | pcrel = fixP->fx_pcrel; | |
a55774a1 KR |
2192 | plt = fixP->fx_plt; |
2193 | ||
e120d9fb ILT |
2194 | if (add_symbolP != NULL |
2195 | && add_symbolP->sy_mri_common) | |
1356d77d ILT |
2196 | { |
2197 | know (add_symbolP->sy_value.X_op == O_symbol); | |
2198 | add_number += S_GET_VALUE (add_symbolP); | |
2199 | fixP->fx_offset = add_number; | |
2200 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
2201 | } | |
2202 | ||
f5c32424 KR |
2203 | if (add_symbolP) |
2204 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
2205 | ||
2206 | if (sub_symbolP) | |
2207 | { | |
f7da4a99 | 2208 | resolve_symbol_value (sub_symbolP); |
96fe71e1 | 2209 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) |
f5c32424 | 2210 | { |
96fe71e1 MM |
2211 | if (add_symbolP != NULL) |
2212 | { | |
2213 | add_number += S_GET_VALUE (add_symbolP); | |
2214 | add_symbolP = NULL; | |
2215 | fixP->fx_addsy = NULL; | |
2216 | } | |
2217 | ||
2218 | /* It's just -sym */ | |
f5c32424 | 2219 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) |
96fe71e1 MM |
2220 | { |
2221 | add_number -= S_GET_VALUE (sub_symbolP); | |
2222 | fixP->fx_subsy = NULL; | |
2223 | } | |
f5c32424 KR |
2224 | else if (pcrel |
2225 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
2226 | { | |
2227 | /* Should try converting to a constant. */ | |
2228 | goto bad_sub_reloc; | |
2229 | } | |
2230 | else | |
2231 | bad_sub_reloc: | |
741f4d66 KR |
2232 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2233 | "Negative of non-absolute symbol %s", | |
2234 | S_GET_NAME (sub_symbolP)); | |
f5c32424 | 2235 | } |
96fe71e1 MM |
2236 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment |
2237 | && SEG_NORMAL (add_symbol_segment)) | |
f5c32424 KR |
2238 | { |
2239 | /* Difference of 2 symbols from same segment. | |
2240 | Can't make difference of 2 undefineds: 'value' means | |
2241 | something different for N_UNDF. */ | |
fecd2382 | 2242 | #ifdef TC_I960 |
f5c32424 KR |
2243 | /* Makes no sense to use the difference of 2 arbitrary symbols |
2244 | as the target of a call instruction. */ | |
2245 | if (fixP->fx_tcbit) | |
741f4d66 KR |
2246 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2247 | "callj to difference of 2 symbols"); | |
6efd877d | 2248 | #endif /* TC_I960 */ |
f5c32424 KR |
2249 | add_number += S_GET_VALUE (add_symbolP) - |
2250 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 2251 | |
f5c32424 | 2252 | add_symbolP = NULL; |
c151fd1e | 2253 | pcrel = 0; /* No further pcrel processing. */ |
335d35c8 | 2254 | |
f5c32424 KR |
2255 | /* Let the target machine make the final determination |
2256 | as to whether or not a relocation will be needed to | |
2257 | handle this fixup. */ | |
96fe71e1 | 2258 | if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) |
98c6bbbe | 2259 | { |
c151fd1e | 2260 | fixP->fx_pcrel = 0; |
98c6bbbe | 2261 | fixP->fx_addsy = NULL; |
96fe71e1 | 2262 | fixP->fx_subsy = NULL; |
98c6bbbe | 2263 | } |
f5c32424 KR |
2264 | } |
2265 | else | |
2266 | { | |
2267 | /* Different segments in subtraction. */ | |
2268 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
2269 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
2270 | ||
2271 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
2272 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 2273 | |
80aab579 | 2274 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
2275 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
2276 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
2277 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
2278 | pc-relative mode. */ | |
2279 | && pcrel | |
0f894895 | 2280 | #endif |
f5c32424 KR |
2281 | ) |
2282 | { | |
2283 | /* Make it pc-relative. */ | |
96fe71e1 | 2284 | add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) |
f5c32424 KR |
2285 | - S_GET_VALUE (sub_symbolP)); |
2286 | pcrel = 1; | |
2287 | fixP->fx_pcrel = 1; | |
2288 | sub_symbolP = 0; | |
2289 | fixP->fx_subsy = 0; | |
2290 | } | |
98c6bbbe | 2291 | #endif |
d4083e29 KR |
2292 | #ifdef UNDEFINED_DIFFERENCE_OK |
2293 | /* The PA needs this for PIC code generation. We basically | |
2294 | don't want to do anything if we have the difference of two | |
2295 | symbols at this point. */ | |
2296 | else if (1) | |
2297 | { | |
2298 | /* Leave it alone. */ | |
2299 | } | |
2300 | #endif | |
98c6bbbe KR |
2301 | #ifdef BFD_ASSEMBLER |
2302 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
2303 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
2304 | { | |
2305 | /* Leave it alone. */ | |
2306 | } | |
80aab579 | 2307 | #endif |
f5c32424 KR |
2308 | else |
2309 | { | |
2310 | char buf[50]; | |
2311 | sprint_value (buf, fragP->fr_address + where); | |
741f4d66 KR |
2312 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2313 | "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
2314 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
2315 | S_GET_NAME (sub_symbolP), buf); | |
f5c32424 KR |
2316 | } |
2317 | } | |
2318 | } | |
6efd877d | 2319 | |
f5c32424 KR |
2320 | if (add_symbolP) |
2321 | { | |
a55774a1 | 2322 | if (add_symbol_segment == this_segment_type && pcrel && !plt |
5767cfb7 | 2323 | && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) |
f5c32424 KR |
2324 | { |
2325 | /* | |
2326 | * This fixup was made when the symbol's segment was | |
2327 | * SEG_UNKNOWN, but it is now in the local segment. | |
2328 | * So we know how to do the address without relocation. | |
2329 | */ | |
fecd2382 | 2330 | #ifdef TC_I960 |
f5c32424 KR |
2331 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
2332 | 'bal', in which cases it modifies *fixP as appropriate. | |
2333 | In the case of a 'calls', no further work is required, | |
2334 | and *fixP has been set up to make the rest of the code | |
2335 | below a no-op. */ | |
2336 | reloc_callj (fixP); | |
fecd2382 | 2337 | #endif /* TC_I960 */ |
6efd877d | 2338 | |
f5c32424 | 2339 | add_number += S_GET_VALUE (add_symbolP); |
96fe71e1 | 2340 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 KR |
2341 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ |
2342 | ||
2343 | /* Let the target machine make the final determination | |
2344 | as to whether or not a relocation will be needed to | |
2345 | handle this fixup. */ | |
2346 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
2347 | { |
2348 | fixP->fx_pcrel = 0; | |
2349 | fixP->fx_addsy = NULL; | |
2350 | } | |
f5c32424 KR |
2351 | } |
2352 | else | |
2353 | { | |
2354 | if (add_symbol_segment == absolute_section) | |
2355 | { | |
fecd2382 | 2356 | #ifdef TC_I960 |
f5c32424 KR |
2357 | /* See comment about reloc_callj() above. */ |
2358 | reloc_callj (fixP); | |
fecd2382 | 2359 | #endif /* TC_I960 */ |
f5c32424 KR |
2360 | add_number += S_GET_VALUE (add_symbolP); |
2361 | ||
2362 | /* Let the target machine make the final determination | |
2363 | as to whether or not a relocation will be needed to | |
2364 | handle this fixup. */ | |
305a3af6 | 2365 | |
f00f5ecd | 2366 | if (!TC_FORCE_RELOCATION (fixP)) |
e67a0640 KR |
2367 | { |
2368 | fixP->fx_addsy = NULL; | |
2369 | add_symbolP = NULL; | |
2370 | } | |
f5c32424 KR |
2371 | } |
2372 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 2373 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2374 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 2375 | #endif |
f5c32424 KR |
2376 | ) |
2377 | { | |
fecd2382 | 2378 | #ifdef TC_I960 |
f5c32424 KR |
2379 | if ((int) fixP->fx_bit_fixP == 13) |
2380 | { | |
2381 | /* This is a COBR instruction. They have only a | |
2382 | * 13-bit displacement and are only to be used | |
2383 | * for local branches: flag as error, don't generate | |
2384 | * relocation. | |
2385 | */ | |
741f4d66 KR |
2386 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2387 | "can't use COBR format with external label"); | |
98c6bbbe KR |
2388 | fixP->fx_addsy = NULL; |
2389 | fixP->fx_done = 1; | |
f5c32424 KR |
2390 | continue; |
2391 | } /* COBR */ | |
fecd2382 | 2392 | #endif /* TC_I960 */ |
f5c32424 | 2393 | |
fecd2382 | 2394 | #ifdef OBJ_COFF |
c593cf41 | 2395 | #ifdef TE_I386AIX |
f5c32424 KR |
2396 | if (S_IS_COMMON (add_symbolP)) |
2397 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2398 | #endif /* TE_I386AIX */ |
fecd2382 | 2399 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2400 | ++seg_reloc_count; |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | seg_reloc_count++; | |
a55774a1 | 2405 | #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) |
f5c32424 | 2406 | add_number += S_GET_VALUE (add_symbolP); |
a55774a1 | 2407 | #endif |
f5c32424 KR |
2408 | } |
2409 | } | |
2410 | } | |
6efd877d | 2411 | |
f5c32424 KR |
2412 | if (pcrel) |
2413 | { | |
96fe71e1 | 2414 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 KR |
2415 | if (add_symbolP == 0) |
2416 | { | |
1cf7548e | 2417 | #ifndef BFD_ASSEMBLER |
f5c32424 | 2418 | fixP->fx_addsy = &abs_symbol; |
1cf7548e KR |
2419 | #else |
2420 | fixP->fx_addsy = section_symbol (absolute_section); | |
2421 | #endif | |
2422 | fixP->fx_addsy->sy_used_in_reloc = 1; | |
f5c32424 | 2423 | ++seg_reloc_count; |
98c6bbbe KR |
2424 | } |
2425 | } | |
6efd877d | 2426 | |
c7d7eed0 | 2427 | if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) |
f5c32424 KR |
2428 | { |
2429 | valueT mask = 0; | |
df44a852 | 2430 | if (size < sizeof (mask)) |
f5c32424 | 2431 | { |
df44a852 KR |
2432 | /* set all bits to one */ |
2433 | mask--; | |
2434 | /* Technically, combining these produces an undefined result | |
2435 | if size is sizeof (valueT), though I think these two | |
2436 | half-way operations should both be defined. And the | |
2437 | compiler should be able to combine them if it's valid on | |
2438 | the host architecture. */ | |
2439 | mask <<= size * 4; | |
2440 | mask <<= size * 4; | |
2441 | if ((add_number & mask) != 0 | |
2442 | && (add_number & mask) != mask) | |
2443 | { | |
2444 | char buf[50], buf2[50]; | |
2445 | sprint_value (buf, fragP->fr_address + where); | |
2446 | if (add_number > 1000) | |
2447 | sprint_value (buf2, add_number); | |
2448 | else | |
2449 | sprintf (buf2, "%ld", (long) add_number); | |
2450 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2451 | "Value of %s too large for field of %d bytes at %s", | |
2452 | buf2, size, buf); | |
2453 | } /* generic error checking */ | |
2454 | } | |
f5c32424 KR |
2455 | #ifdef WARN_SIGNED_OVERFLOW_WORD |
2456 | /* Warn if a .word value is too large when treated as a signed | |
2457 | number. We already know it is not too negative. This is to | |
2458 | catch over-large switches generated by gcc on the 68k. */ | |
def66e24 | 2459 | if (!flag_signed_overflow_ok |
f5c32424 KR |
2460 | && size == 2 |
2461 | && add_number > 0x7fff) | |
2462 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2463 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2464 | (long) add_number, | |
2465 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2466 | #endif |
f5c32424 | 2467 | } /* not a bit fix */ |
6efd877d | 2468 | |
98c6bbbe KR |
2469 | if (!fixP->fx_done) |
2470 | { | |
3f81f3cf MM |
2471 | #ifdef MD_APPLY_FIX3 |
2472 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
2473 | #else | |
43ca9aa6 | 2474 | #ifdef BFD_ASSEMBLER |
98c6bbbe | 2475 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2476 | #else |
98c6bbbe KR |
2477 | md_apply_fix (fixP, add_number); |
2478 | #endif | |
3f81f3cf | 2479 | #endif |
98c6bbbe KR |
2480 | |
2481 | #ifndef TC_HANDLES_FX_DONE | |
2482 | /* If the tc-* files haven't been converted, assume it's handling | |
2483 | it the old way, where a null fx_addsy means that the fix has | |
2484 | been applied completely, and no further work is needed. */ | |
2485 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2486 | fixP->fx_done = 1; | |
43ca9aa6 | 2487 | #endif |
98c6bbbe KR |
2488 | } |
2489 | #ifdef TC_VALIDATE_FIX | |
a55774a1 KR |
2490 | skip: ; |
2491 | #endif | |
2492 | #ifdef DEBUG5 | |
2493 | fprintf (stderr, "result:\n"); | |
2494 | print_fixup (fixP); | |
98c6bbbe | 2495 | #endif |
f5c32424 | 2496 | } /* For each fixS in this segment. */ |
6efd877d | 2497 | |
f5c32424 KR |
2498 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2499 | return seg_reloc_count; | |
2500 | } | |
6efd877d | 2501 | |
3f81f3cf | 2502 | #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */ |
6efd877d | 2503 | |
f5c32424 KR |
2504 | void |
2505 | number_to_chars_bigendian (buf, val, n) | |
2506 | char *buf; | |
2507 | valueT val; | |
2508 | int n; | |
2509 | { | |
2510 | if (n > sizeof (val)|| n <= 0) | |
2511 | abort (); | |
2512 | while (n--) | |
2513 | { | |
2514 | buf[n] = val & 0xff; | |
2515 | val >>= 8; | |
2516 | } | |
d5364748 | 2517 | } |
fecd2382 | 2518 | |
f5c32424 KR |
2519 | void |
2520 | number_to_chars_littleendian (buf, val, n) | |
2521 | char *buf; | |
2522 | valueT val; | |
2523 | int n; | |
2524 | { | |
2525 | if (n > sizeof (val) || n <= 0) | |
2526 | abort (); | |
2527 | while (n--) | |
2528 | { | |
2529 | *buf++ = val & 0xff; | |
2530 | val >>= 8; | |
2531 | } | |
2532 | } | |
80aab579 | 2533 | |
4acf8c78 KR |
2534 | /* for debugging */ |
2535 | extern int indent_level; | |
b04bc423 | 2536 | extern void print_symbol_value_1 (); |
4acf8c78 KR |
2537 | |
2538 | void | |
2539 | print_fixup (fixp) | |
2540 | fixS *fixp; | |
2541 | { | |
2542 | indent_level = 1; | |
a55774a1 | 2543 | fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line); |
4acf8c78 KR |
2544 | if (fixp->fx_pcrel) |
2545 | fprintf (stderr, " pcrel"); | |
2546 | if (fixp->fx_pcrel_adjust) | |
2547 | fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust); | |
2548 | if (fixp->fx_im_disp) | |
2549 | { | |
2550 | #ifdef TC_NS32K | |
2551 | fprintf (stderr, " im_disp=%d", fixp->fx_im_disp); | |
2552 | #else | |
2553 | fprintf (stderr, " im_disp"); | |
2554 | #endif | |
2555 | } | |
2556 | if (fixp->fx_tcbit) | |
2557 | fprintf (stderr, " tcbit"); | |
2558 | if (fixp->fx_done) | |
2559 | fprintf (stderr, " done"); | |
a55774a1 KR |
2560 | fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx", |
2561 | fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where, | |
2562 | (long) fixp->fx_offset, (long) fixp->fx_addnumber); | |
9dc6c00f KR |
2563 | #ifdef BFD_ASSEMBLER |
2564 | fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type), | |
2565 | fixp->fx_r_type); | |
2566 | #else | |
a55774a1 | 2567 | #ifdef NEED_FX_R_TYPE |
9dc6c00f | 2568 | fprintf (stderr, " r_type=%d", fixp->fx_r_type); |
a55774a1 | 2569 | #endif |
9dc6c00f KR |
2570 | #endif |
2571 | if (fixp->fx_addsy) | |
2572 | { | |
a55774a1 | 2573 | fprintf (stderr, "\n +<"); |
9dc6c00f KR |
2574 | print_symbol_value_1 (stderr, fixp->fx_addsy); |
2575 | fprintf (stderr, ">"); | |
2576 | } | |
a55774a1 KR |
2577 | if (fixp->fx_subsy) |
2578 | { | |
2579 | fprintf (stderr, "\n -<"); | |
2580 | print_symbol_value_1 (stderr, fixp->fx_subsy); | |
2581 | fprintf (stderr, ">"); | |
2582 | } | |
9dc6c00f | 2583 | fprintf (stderr, "\n"); |
4acf8c78 KR |
2584 | } |
2585 | ||
fecd2382 | 2586 | /* end of write.c */ |