Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* write.c - emit .o file |
a043f579 | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 1996 |
5767cfb7 | 3 | Free Software Foundation, Inc. |
6efd877d | 4 | |
a39116f1 | 5 | This file is part of GAS, the GNU Assembler. |
6efd877d | 6 | |
a39116f1 RP |
7 | GAS is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
6efd877d | 11 | |
a39116f1 RP |
12 | GAS is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
6efd877d | 16 | |
a39116f1 RP |
17 | You should have received a copy of the GNU General Public License |
18 | along with GAS; see the file COPYING. If not, write to | |
a2a5a4fa | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
fecd2382 | 20 | |
c593cf41 | 21 | /* This thing should be set up to do byteordering correctly. But... */ |
fecd2382 RP |
22 | |
23 | #include "as.h" | |
fecd2382 RP |
24 | #include "subsegs.h" |
25 | #include "obstack.h" | |
26 | #include "output-file.h" | |
27 | ||
d9d6f094 KR |
28 | /* This looks like a good idea. Let's try turning it on always, for now. */ |
29 | #undef BFD_FAST_SECTION_FILL | |
30 | #define BFD_FAST_SECTION_FILL | |
31 | ||
43ca9aa6 KR |
32 | /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop |
33 | instruction so that the disassembler does not choke on it. */ | |
6d5460ab RP |
34 | #ifndef NOP_OPCODE |
35 | #define NOP_OPCODE 0x00 | |
36 | #endif | |
37 | ||
f5c32424 KR |
38 | #ifndef TC_ADJUST_RELOC_COUNT |
39 | #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) | |
40 | #endif | |
41 | ||
335d35c8 JL |
42 | #ifndef TC_FORCE_RELOCATION |
43 | #define TC_FORCE_RELOCATION(FIXP) 0 | |
44 | #endif | |
45 | ||
96fe71e1 MM |
46 | #ifndef TC_FORCE_RELOCATION_SECTION |
47 | #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) | |
48 | #endif | |
49 | ||
50 | #ifndef MD_PCREL_FROM_SECTION | |
51 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) | |
52 | #endif | |
53 | ||
43ca9aa6 KR |
54 | #ifndef WORKING_DOT_WORD |
55 | extern CONST int md_short_jump_size; | |
56 | extern CONST int md_long_jump_size; | |
57 | #endif | |
58 | ||
1cf7548e | 59 | int symbol_table_frozen; |
a55774a1 | 60 | void print_fixup PARAMS ((fixS *)); |
1cf7548e | 61 | |
1b96bdce | 62 | #ifdef BFD_ASSEMBLER |
a55774a1 KR |
63 | static void renumber_sections PARAMS ((bfd *, asection *, PTR)); |
64 | ||
1b96bdce ILT |
65 | /* We generally attach relocs to frag chains. However, after we have |
66 | chained these all together into a segment, any relocs we add after | |
67 | that must be attached to a segment. This will include relocs added | |
68 | in md_estimate_size_for_relax, for example. */ | |
69 | static int frags_chained = 0; | |
70 | #endif | |
71 | ||
43ca9aa6 KR |
72 | #ifndef BFD_ASSEMBLER |
73 | ||
45432836 | 74 | #ifndef MANY_SEGMENTS |
09952cd9 KR |
75 | struct frag *text_frag_root; |
76 | struct frag *data_frag_root; | |
77 | struct frag *bss_frag_root; | |
fecd2382 | 78 | |
09952cd9 KR |
79 | struct frag *text_last_frag; /* Last frag in segment. */ |
80 | struct frag *data_last_frag; /* Last frag in segment. */ | |
65bfcf2e | 81 | static struct frag *bss_last_frag; /* Last frag in segment. */ |
45432836 | 82 | #endif |
fecd2382 | 83 | |
1cf7548e | 84 | #ifndef BFD |
fecd2382 | 85 | static object_headers headers; |
80aab579 ILT |
86 | #endif |
87 | ||
88 | long string_byte_count; | |
fecd2382 RP |
89 | char *next_object_file_charP; /* Tracks object file bytes. */ |
90 | ||
3eb802b5 | 91 | #ifndef OBJ_VMS |
fecd2382 | 92 | int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; |
3eb802b5 | 93 | #endif |
fecd2382 | 94 | |
43ca9aa6 KR |
95 | #endif /* BFD_ASSEMBLER */ |
96 | ||
a043f579 ILT |
97 | static int n_fixups; |
98 | ||
7a0405b9 | 99 | #ifdef BFD_ASSEMBLER |
b23f6743 | 100 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
5ac34ac3 ILT |
101 | symbolS *add, symbolS *sub, |
102 | offsetT offset, int pcrel, | |
7a0405b9 | 103 | bfd_reloc_code_real_type r_type)); |
5ac34ac3 | 104 | #else |
b23f6743 | 105 | static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, |
7a0405b9 ILT |
106 | symbolS *add, symbolS *sub, |
107 | offsetT offset, int pcrel, | |
108 | int r_type)); | |
5ac34ac3 | 109 | #endif |
3f81f3cf | 110 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
6efd877d | 111 | static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); |
80aab579 | 112 | #endif |
d5364748 | 113 | static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); |
fecd2382 RP |
114 | |
115 | /* | |
116 | * fix_new() | |
117 | * | |
118 | * Create a fixS in obstack 'notes'. | |
119 | */ | |
5ac34ac3 ILT |
120 | static fixS * |
121 | fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, | |
122 | r_type) | |
6efd877d KR |
123 | fragS *frag; /* Which frag? */ |
124 | int where; /* Where in that frag? */ | |
b23f6743 | 125 | int size; /* 1, 2, or 4 usually. */ |
6efd877d | 126 | symbolS *add_symbol; /* X_add_symbol. */ |
5ac34ac3 | 127 | symbolS *sub_symbol; /* X_op_symbol. */ |
d5364748 | 128 | offsetT offset; /* X_add_number. */ |
6efd877d | 129 | int pcrel; /* TRUE if PC-relative relocation. */ |
43ca9aa6 KR |
130 | #ifdef BFD_ASSEMBLER |
131 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
132 | #else | |
6efd877d | 133 | int r_type; /* Relocation type */ |
43ca9aa6 | 134 | #endif |
fecd2382 | 135 | { |
6efd877d KR |
136 | fixS *fixP; |
137 | ||
a043f579 ILT |
138 | n_fixups++; |
139 | ||
6efd877d KR |
140 | fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); |
141 | ||
142 | fixP->fx_frag = frag; | |
143 | fixP->fx_where = where; | |
144 | fixP->fx_size = size; | |
f00f5ecd ILT |
145 | /* We've made fx_size a narrow field; check that it's wide enough. */ |
146 | if (fixP->fx_size != size) | |
147 | { | |
148 | as_bad ("field fx_size too small to hold %d", size); | |
149 | abort (); | |
150 | } | |
6efd877d KR |
151 | fixP->fx_addsy = add_symbol; |
152 | fixP->fx_subsy = sub_symbol; | |
153 | fixP->fx_offset = offset; | |
154 | fixP->fx_pcrel = pcrel; | |
a55774a1 | 155 | fixP->fx_plt = 0; |
43ca9aa6 | 156 | #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER) |
6efd877d | 157 | fixP->fx_r_type = r_type; |
c593cf41 | 158 | #endif |
6efd877d KR |
159 | fixP->fx_im_disp = 0; |
160 | fixP->fx_pcrel_adjust = 0; | |
6efd877d | 161 | fixP->fx_bit_fixP = 0; |
43ca9aa6 | 162 | fixP->fx_addnumber = 0; |
a58374d7 | 163 | fixP->fx_tcbit = 0; |
98c6bbbe | 164 | fixP->fx_done = 0; |
43ca9aa6 | 165 | |
f00f5ecd ILT |
166 | #ifdef TC_FIX_TYPE |
167 | TC_INIT_FIX_DATA(fixP); | |
43ca9aa6 | 168 | #endif |
43ca9aa6 | 169 | |
84fa9814 KR |
170 | as_where (&fixP->fx_file, &fixP->fx_line); |
171 | ||
43ca9aa6 KR |
172 | /* Usually, we want relocs sorted numerically, but while |
173 | comparing to older versions of gas that have relocs | |
174 | reverse sorted, it is convenient to have this compile | |
175 | time option. xoxorich. */ | |
176 | ||
177 | { | |
6efd877d | 178 | |
43ca9aa6 | 179 | #ifdef BFD_ASSEMBLER |
1b96bdce ILT |
180 | fixS **seg_fix_rootP = (frags_chained |
181 | ? &seg_info (now_seg)->fix_root | |
182 | : &frchain_now->fix_root); | |
183 | fixS **seg_fix_tailP = (frags_chained | |
184 | ? &seg_info (now_seg)->fix_tail | |
185 | : &frchain_now->fix_tail); | |
43ca9aa6 | 186 | #endif |
09952cd9 | 187 | |
f6e504fe | 188 | #ifdef REVERSE_SORT_RELOCS |
6efd877d | 189 | |
43ca9aa6 KR |
190 | fixP->fx_next = *seg_fix_rootP; |
191 | *seg_fix_rootP = fixP; | |
6efd877d | 192 | |
f6e504fe | 193 | #else /* REVERSE_SORT_RELOCS */ |
6efd877d | 194 | |
43ca9aa6 | 195 | fixP->fx_next = NULL; |
6efd877d | 196 | |
43ca9aa6 KR |
197 | if (*seg_fix_tailP) |
198 | (*seg_fix_tailP)->fx_next = fixP; | |
199 | else | |
200 | *seg_fix_rootP = fixP; | |
201 | *seg_fix_tailP = fixP; | |
6efd877d | 202 | |
f6e504fe | 203 | #endif /* REVERSE_SORT_RELOCS */ |
6efd877d | 204 | |
43ca9aa6 KR |
205 | } |
206 | ||
207 | return fixP; | |
208 | } | |
209 | ||
5ac34ac3 ILT |
210 | /* Create a fixup relative to a symbol (plus a constant). */ |
211 | ||
212 | fixS * | |
213 | fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) | |
214 | fragS *frag; /* Which frag? */ | |
215 | int where; /* Where in that frag? */ | |
f7da4a99 | 216 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
217 | symbolS *add_symbol; /* X_add_symbol. */ |
218 | offsetT offset; /* X_add_number. */ | |
219 | int pcrel; /* TRUE if PC-relative relocation. */ | |
220 | #ifdef BFD_ASSEMBLER | |
221 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
222 | #else | |
223 | int r_type; /* Relocation type */ | |
224 | #endif | |
225 | { | |
226 | return fix_new_internal (frag, where, size, add_symbol, | |
227 | (symbolS *) NULL, offset, pcrel, r_type); | |
228 | } | |
229 | ||
230 | /* Create a fixup for an expression. Currently we only support fixups | |
231 | for difference expressions. That is itself more than most object | |
232 | file formats support anyhow. */ | |
233 | ||
234 | fixS * | |
235 | fix_new_exp (frag, where, size, exp, pcrel, r_type) | |
236 | fragS *frag; /* Which frag? */ | |
237 | int where; /* Where in that frag? */ | |
f7da4a99 | 238 | int size; /* 1, 2, or 4 usually. */ |
5ac34ac3 ILT |
239 | expressionS *exp; /* Expression. */ |
240 | int pcrel; /* TRUE if PC-relative relocation. */ | |
241 | #ifdef BFD_ASSEMBLER | |
242 | bfd_reloc_code_real_type r_type; /* Relocation type */ | |
243 | #else | |
244 | int r_type; /* Relocation type */ | |
245 | #endif | |
246 | { | |
247 | symbolS *add = NULL; | |
248 | symbolS *sub = NULL; | |
249 | offsetT off = 0; | |
96fe71e1 | 250 | |
5ac34ac3 ILT |
251 | switch (exp->X_op) |
252 | { | |
253 | case O_absent: | |
254 | break; | |
255 | ||
4acf8c78 KR |
256 | case O_add: |
257 | /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if | |
258 | the difference expression cannot immediately be reduced. */ | |
259 | { | |
260 | extern symbolS *make_expr_symbol (); | |
261 | symbolS *stmp = make_expr_symbol (exp); | |
262 | exp->X_op = O_symbol; | |
263 | exp->X_op_symbol = 0; | |
264 | exp->X_add_symbol = stmp; | |
265 | exp->X_add_number = 0; | |
266 | return fix_new_exp (frag, where, size, exp, pcrel, r_type); | |
267 | } | |
268 | ||
96fe71e1 MM |
269 | case O_symbol_rva: |
270 | add = exp->X_add_symbol; | |
271 | off = exp->X_add_number; | |
272 | ||
273 | #if defined(BFD_ASSEMBLER) | |
274 | r_type = BFD_RELOC_RVA; | |
8095b665 ILT |
275 | #else |
276 | #if defined(TC_RVA_RELOC) | |
96fe71e1 MM |
277 | r_type = TC_RVA_RELOC; |
278 | #else | |
279 | as_fatal("rva not supported"); | |
8095b665 | 280 | #endif |
96fe71e1 MM |
281 | #endif |
282 | break; | |
283 | ||
b23f6743 KR |
284 | case O_uminus: |
285 | sub = exp->X_add_symbol; | |
286 | off = exp->X_add_number; | |
287 | break; | |
288 | ||
5ac34ac3 ILT |
289 | case O_subtract: |
290 | sub = exp->X_op_symbol; | |
291 | /* Fall through. */ | |
292 | case O_symbol: | |
293 | add = exp->X_add_symbol; | |
294 | /* Fall through. */ | |
295 | case O_constant: | |
296 | off = exp->X_add_number; | |
297 | break; | |
5d0cd0b8 | 298 | |
5ac34ac3 | 299 | default: |
00a69b89 ILT |
300 | add = make_expr_symbol (exp); |
301 | break; | |
5ac34ac3 ILT |
302 | } |
303 | ||
304 | return fix_new_internal (frag, where, size, add, sub, off, | |
305 | pcrel, r_type); | |
306 | } | |
307 | ||
43ca9aa6 KR |
308 | /* Append a string onto another string, bumping the pointer along. */ |
309 | void | |
310 | append (charPP, fromP, length) | |
311 | char **charPP; | |
312 | char *fromP; | |
313 | unsigned long length; | |
314 | { | |
315 | /* Don't trust memcpy() of 0 chars. */ | |
316 | if (length == 0) | |
317 | return; | |
318 | ||
80aab579 | 319 | memcpy (*charPP, fromP, length); |
43ca9aa6 KR |
320 | *charPP += length; |
321 | } | |
322 | ||
5d0cd0b8 | 323 | #ifndef BFD_ASSEMBLER |
43ca9aa6 KR |
324 | int section_alignment[SEG_MAXIMUM_ORDINAL]; |
325 | #endif | |
326 | ||
327 | /* | |
328 | * This routine records the largest alignment seen for each segment. | |
329 | * If the beginning of the segment is aligned on the worst-case | |
330 | * boundary, all of the other alignments within it will work. At | |
331 | * least one object format really uses this info. | |
332 | */ | |
5d0cd0b8 | 333 | void |
43ca9aa6 KR |
334 | record_alignment (seg, align) |
335 | /* Segment to which alignment pertains */ | |
336 | segT seg; | |
337 | /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte | |
338 | boundary, etc.) */ | |
339 | int align; | |
340 | { | |
5c800455 ILT |
341 | if (seg == absolute_section) |
342 | return; | |
43ca9aa6 KR |
343 | #ifdef BFD_ASSEMBLER |
344 | if (align > bfd_get_section_alignment (stdoutput, seg)) | |
345 | bfd_set_section_alignment (stdoutput, seg, align); | |
346 | #else | |
347 | if (align > section_alignment[(int) seg]) | |
348 | section_alignment[(int) seg] = align; | |
349 | #endif | |
350 | } | |
351 | ||
a55774a1 KR |
352 | #ifdef BFD_ASSEMBLER |
353 | ||
354 | /* Reset the section indices after removing the gas created sections. */ | |
355 | ||
356 | static void | |
357 | renumber_sections (abfd, sec, countparg) | |
358 | bfd *abfd; | |
359 | asection *sec; | |
360 | PTR countparg; | |
361 | { | |
362 | int *countp = (int *) countparg; | |
363 | ||
364 | sec->index = *countp; | |
365 | ++*countp; | |
366 | } | |
367 | ||
368 | #endif /* defined (BFD_ASSEMBLER) */ | |
369 | ||
43ca9aa6 KR |
370 | #if defined (BFD_ASSEMBLER) || ! defined (BFD) |
371 | ||
372 | static fragS * | |
373 | chain_frchains_together_1 (section, frchp) | |
374 | segT section; | |
375 | struct frchain *frchp; | |
376 | { | |
377 | fragS dummy, *prev_frag = &dummy; | |
b04bc423 | 378 | #ifdef BFD_ASSEMBLER |
3f81f3cf | 379 | fixS fix_dummy, *prev_fix = &fix_dummy; |
b04bc423 | 380 | #endif |
262b22cd | 381 | |
43ca9aa6 KR |
382 | for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next) |
383 | { | |
384 | prev_frag->fr_next = frchp->frch_root; | |
385 | prev_frag = frchp->frch_last; | |
96fe71e1 | 386 | assert (prev_frag->fr_type != 0); |
3a0e38ee | 387 | #ifdef BFD_ASSEMBLER |
262b22cd ILT |
388 | if (frchp->fix_root != (fixS *) NULL) |
389 | { | |
390 | if (seg_info (section)->fix_root == (fixS *) NULL) | |
391 | seg_info (section)->fix_root = frchp->fix_root; | |
392 | prev_fix->fx_next = frchp->fix_root; | |
1b96bdce | 393 | seg_info (section)->fix_tail = frchp->fix_tail; |
262b22cd ILT |
394 | prev_fix = frchp->fix_tail; |
395 | } | |
3a0e38ee | 396 | #endif |
43ca9aa6 | 397 | } |
96fe71e1 | 398 | assert (prev_frag->fr_type != 0); |
43ca9aa6 KR |
399 | prev_frag->fr_next = 0; |
400 | return prev_frag; | |
401 | } | |
402 | ||
403 | #endif | |
404 | ||
405 | #ifdef BFD_ASSEMBLER | |
406 | ||
407 | static void | |
408 | chain_frchains_together (abfd, section, xxx) | |
409 | bfd *abfd; /* unused */ | |
410 | segT section; | |
a58374d7 | 411 | PTR xxx; /* unused */ |
43ca9aa6 | 412 | { |
f2f7d044 ILT |
413 | segment_info_type *info; |
414 | ||
415 | /* BFD may have introduced its own sections without using | |
416 | subseg_new, so it is possible that seg_info is NULL. */ | |
417 | info = seg_info (section); | |
418 | if (info != (segment_info_type *) NULL) | |
0f894895 JL |
419 | info->frchainP->frch_last |
420 | = chain_frchains_together_1 (section, info->frchainP); | |
1b96bdce ILT |
421 | |
422 | /* Now that we've chained the frags together, we must add new fixups | |
423 | to the segment, not to the frag chain. */ | |
424 | frags_chained = 1; | |
43ca9aa6 KR |
425 | } |
426 | ||
427 | #endif | |
542e1629 | 428 | |
d5364748 | 429 | #if !defined (BFD) && !defined (BFD_ASSEMBLER) |
65bfcf2e | 430 | |
5d0cd0b8 | 431 | void |
6efd877d KR |
432 | remove_subsegs (head, seg, root, last) |
433 | frchainS *head; | |
434 | int seg; | |
435 | fragS **root; | |
436 | fragS **last; | |
65bfcf2e | 437 | { |
65bfcf2e | 438 | *root = head->frch_root; |
43ca9aa6 KR |
439 | *last = chain_frchains_together_1 (seg, head); |
440 | } | |
441 | ||
442 | #endif /* BFD */ | |
443 | ||
80aab579 ILT |
444 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
445 | ||
43ca9aa6 | 446 | #ifdef BFD_ASSEMBLER |
58d4951d ILT |
447 | static void |
448 | cvt_frag_to_fill (sec, fragP) | |
449 | segT sec; | |
43ca9aa6 | 450 | fragS *fragP; |
43ca9aa6 | 451 | #else |
58d4951d | 452 | static void |
d4083e29 | 453 | cvt_frag_to_fill (headersP, sec, fragP) |
3f81f3cf | 454 | object_headers *headersP; |
d4083e29 | 455 | segT sec; |
58d4951d | 456 | fragS *fragP; |
43ca9aa6 | 457 | #endif |
58d4951d | 458 | { |
43ca9aa6 | 459 | switch (fragP->fr_type) |
6efd877d | 460 | { |
43ca9aa6 | 461 | case rs_align: |
cd3b81bd | 462 | case rs_align_code: |
43ca9aa6 | 463 | case rs_org: |
cd3b81bd | 464 | case rs_space: |
43ca9aa6 KR |
465 | #ifdef HANDLE_ALIGN |
466 | HANDLE_ALIGN (fragP); | |
467 | #endif | |
43ca9aa6 | 468 | know (fragP->fr_next != NULL); |
43ca9aa6 KR |
469 | fragP->fr_offset = (fragP->fr_next->fr_address |
470 | - fragP->fr_address | |
98c6bbbe | 471 | - fragP->fr_fix) / fragP->fr_var; |
c151fd1e KR |
472 | if (fragP->fr_offset < 0) |
473 | { | |
474 | as_bad ("attempt to .org/.space backwards? (%ld)", | |
475 | (long) fragP->fr_offset); | |
476 | } | |
cd3b81bd | 477 | fragP->fr_type = rs_fill; |
43ca9aa6 | 478 | break; |
65bfcf2e | 479 | |
43ca9aa6 KR |
480 | case rs_fill: |
481 | break; | |
482 | ||
483 | case rs_machine_dependent: | |
484 | #ifdef BFD_ASSEMBLER | |
485 | md_convert_frag (stdoutput, sec, fragP); | |
486 | #else | |
d4083e29 | 487 | md_convert_frag (headersP, sec, fragP); |
43ca9aa6 KR |
488 | #endif |
489 | ||
d5364748 | 490 | assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); |
43ca9aa6 KR |
491 | |
492 | /* | |
493 | * After md_convert_frag, we make the frag into a ".space 0". | |
494 | * Md_convert_frag() should set up any fixSs and constants | |
495 | * required. | |
496 | */ | |
497 | frag_wane (fragP); | |
498 | break; | |
499 | ||
500 | #ifndef WORKING_DOT_WORD | |
501 | case rs_broken_word: | |
502 | { | |
503 | struct broken_word *lie; | |
504 | ||
505 | if (fragP->fr_subtype) | |
506 | { | |
507 | fragP->fr_fix += md_short_jump_size; | |
508 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
509 | lie && lie->dispfrag == fragP; | |
510 | lie = lie->next_broken_word) | |
511 | if (lie->added == 1) | |
512 | fragP->fr_fix += md_long_jump_size; | |
513 | } | |
514 | frag_wane (fragP); | |
515 | } | |
516 | break; | |
517 | #endif | |
518 | ||
519 | default: | |
520 | BAD_CASE (fragP->fr_type); | |
521 | break; | |
6efd877d | 522 | } |
65bfcf2e | 523 | } |
6efd877d | 524 | |
80aab579 ILT |
525 | #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ |
526 | ||
43ca9aa6 KR |
527 | #ifdef BFD_ASSEMBLER |
528 | static void | |
529 | relax_and_size_seg (abfd, sec, xxx) | |
530 | bfd *abfd; | |
531 | asection *sec; | |
a58374d7 | 532 | PTR xxx; |
43ca9aa6 KR |
533 | { |
534 | flagword flags; | |
13e9182d KR |
535 | fragS *fragp; |
536 | segment_info_type *seginfo; | |
537 | int x; | |
538 | valueT size, newsize; | |
43ca9aa6 | 539 | |
f00f5ecd ILT |
540 | subseg_change (sec, 0); |
541 | ||
43ca9aa6 KR |
542 | flags = bfd_get_section_flags (abfd, sec); |
543 | ||
d9d6f094 | 544 | seginfo = seg_info (sec); |
13e9182d | 545 | if (seginfo && seginfo->frchainP) |
43ca9aa6 | 546 | { |
13e9182d KR |
547 | relax_segment (seginfo->frchainP->frch_root, sec); |
548 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) | |
549 | cvt_frag_to_fill (sec, fragp); | |
550 | for (fragp = seginfo->frchainP->frch_root; | |
551 | fragp->fr_next; | |
552 | fragp = fragp->fr_next) | |
553 | /* walk to last elt */; | |
554 | size = fragp->fr_address + fragp->fr_fix; | |
555 | } | |
556 | else | |
557 | size = 0; | |
a58374d7 ILT |
558 | |
559 | if (size > 0 && ! seginfo->bss) | |
560 | flags |= SEC_HAS_CONTENTS; | |
561 | ||
562 | /* @@ This is just an approximation. */ | |
5f6efd5a | 563 | if (seginfo && seginfo->fix_root) |
a58374d7 ILT |
564 | flags |= SEC_RELOC; |
565 | else | |
566 | flags &= ~SEC_RELOC; | |
567 | x = bfd_set_section_flags (abfd, sec, flags); | |
568 | assert (x == true); | |
569 | ||
20b39b6f JL |
570 | newsize = md_section_align (sec, size); |
571 | x = bfd_set_section_size (abfd, sec, newsize); | |
13e9182d KR |
572 | assert (x == true); |
573 | ||
574 | /* If the size had to be rounded up, add some padding in the last | |
575 | non-empty frag. */ | |
13e9182d KR |
576 | assert (newsize >= size); |
577 | if (size != newsize) | |
578 | { | |
579 | fragS *last = seginfo->frchainP->frch_last; | |
580 | fragp = seginfo->frchainP->frch_root; | |
581 | while (fragp->fr_next != last) | |
582 | fragp = fragp->fr_next; | |
583 | last->fr_address = size; | |
584 | fragp->fr_offset += newsize - size; | |
585 | } | |
586 | ||
43ca9aa6 KR |
587 | #ifdef tc_frob_section |
588 | tc_frob_section (sec); | |
589 | #endif | |
590 | #ifdef obj_frob_section | |
591 | obj_frob_section (sec); | |
592 | #endif | |
593 | } | |
594 | ||
d5364748 KR |
595 | #ifdef DEBUG2 |
596 | static void | |
597 | dump_section_relocs (abfd, sec, stream_) | |
598 | bfd *abfd; | |
599 | asection *sec; | |
600 | char *stream_; | |
601 | { | |
602 | FILE *stream = (FILE *) stream_; | |
603 | segment_info_type *seginfo = seg_info (sec); | |
604 | fixS *fixp = seginfo->fix_root; | |
605 | ||
606 | if (!fixp) | |
607 | return; | |
608 | ||
609 | fprintf (stream, "sec %s relocs:\n", sec->name); | |
610 | while (fixp) | |
611 | { | |
612 | symbolS *s = fixp->fx_addsy; | |
613 | if (s) | |
1cf7548e KR |
614 | { |
615 | fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), | |
616 | s->bsym->section->name); | |
617 | if (s->bsym->flags & BSF_SECTION_SYM) | |
618 | { | |
619 | fprintf (stream, " section sym"); | |
620 | if (S_GET_VALUE (s)) | |
621 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
622 | } | |
623 | else | |
624 | fprintf (stream, "+%x", S_GET_VALUE (s)); | |
625 | fprintf (stream, ")+%x\n", fixp->fx_offset); | |
626 | } | |
d5364748 KR |
627 | else |
628 | fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); | |
629 | fixp = fixp->fx_next; | |
630 | } | |
631 | } | |
632 | #else | |
8095b665 | 633 | #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0) |
d5364748 KR |
634 | #endif |
635 | ||
98c6bbbe KR |
636 | #ifndef EMIT_SECTION_SYMBOLS |
637 | #define EMIT_SECTION_SYMBOLS 1 | |
638 | #endif | |
639 | ||
d5364748 KR |
640 | static void |
641 | adjust_reloc_syms (abfd, sec, xxx) | |
642 | bfd *abfd; | |
643 | asection *sec; | |
a58374d7 | 644 | PTR xxx; |
d5364748 KR |
645 | { |
646 | segment_info_type *seginfo = seg_info (sec); | |
647 | fixS *fixp; | |
648 | ||
649 | if (seginfo == NULL) | |
650 | return; | |
651 | ||
652 | dump_section_relocs (abfd, sec, stderr); | |
653 | ||
654 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
98c6bbbe KR |
655 | if (fixp->fx_done) |
656 | /* ignore it */; | |
657 | else if (fixp->fx_addsy) | |
d5364748 | 658 | { |
a55774a1 | 659 | symbolS *sym; |
4acf8c78 KR |
660 | asection *symsec; |
661 | ||
662 | reduce_fixup: | |
663 | ||
a55774a1 KR |
664 | #ifdef DEBUG5 |
665 | fprintf (stderr, "\n\nadjusting fixup:\n"); | |
666 | print_fixup (fixp); | |
667 | #endif | |
668 | ||
669 | sym = fixp->fx_addsy; | |
d5364748 | 670 | |
73d25784 ILT |
671 | /* All symbols should have already been resolved at this |
672 | point. It is possible to see unresolved expression | |
673 | symbols, though, since they are not in the regular symbol | |
674 | table. */ | |
675 | if (sym != NULL && ! sym->sy_resolved) | |
676 | resolve_symbol_value (sym); | |
677 | if (fixp->fx_subsy != NULL && ! fixp->fx_subsy->sy_resolved) | |
678 | resolve_symbol_value (fixp->fx_subsy); | |
679 | ||
9c199842 ILT |
680 | /* If this symbol is equated to an undefined symbol, convert |
681 | the fixup to being against that symbol. */ | |
682 | if (sym->sy_value.X_op == O_symbol | |
683 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
684 | { | |
685 | fixp->fx_offset += sym->sy_value.X_add_number; | |
686 | sym = sym->sy_value.X_add_symbol; | |
687 | fixp->fx_addsy = sym; | |
688 | } | |
689 | ||
690 | symsec = S_GET_SEGMENT (sym); | |
691 | ||
e120d9fb | 692 | if (sym != NULL && sym->sy_mri_common) |
1356d77d ILT |
693 | { |
694 | /* These symbols are handled specially in fixup_segment. */ | |
695 | goto done; | |
696 | } | |
697 | ||
8095b665 ILT |
698 | if (bfd_is_abs_section (symsec)) |
699 | { | |
700 | /* The fixup_segment routine will not use this symbol in a | |
701 | relocation unless TC_FORCE_RELOCATION returns 1. */ | |
702 | if (TC_FORCE_RELOCATION (fixp)) | |
703 | { | |
704 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
705 | #ifdef UNDEFINED_DIFFERENCE_OK | |
706 | if (fixp->fx_subsy != NULL) | |
707 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
708 | #endif | |
709 | } | |
710 | goto done; | |
711 | } | |
712 | ||
a58374d7 ILT |
713 | /* If it's one of these sections, assume the symbol is |
714 | definitely going to be output. The code in | |
715 | md_estimate_size_before_relax in tc-mips.c uses this test | |
716 | as well, so if you change this code you should look at that | |
717 | code. */ | |
cd3b81bd | 718 | if (bfd_is_und_section (symsec) |
d5364748 | 719 | || bfd_is_com_section (symsec)) |
80aab579 ILT |
720 | { |
721 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
d4083e29 KR |
722 | #ifdef UNDEFINED_DIFFERENCE_OK |
723 | /* We have the difference of an undefined symbol and some | |
724 | other symbol. Make sure to mark the other symbol as used | |
725 | in a relocation so that it will always be output. */ | |
726 | if (fixp->fx_subsy) | |
727 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
728 | #endif | |
a55774a1 | 729 | goto done; |
80aab579 | 730 | } |
d5364748 | 731 | |
54815b9a ILT |
732 | /* Don't try to reduce relocs which refer to .linkonce |
733 | sections. It can lead to confusion when a debugging | |
734 | section refers to a .linkonce section. I hope this will | |
735 | always be correct. */ | |
6259c65f | 736 | if (symsec != sec) |
54815b9a | 737 | { |
6259c65f ILT |
738 | boolean linkonce; |
739 | ||
740 | linkonce = false; | |
741 | #ifdef BFD_ASSEMBLER | |
742 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
743 | != 0) | |
744 | linkonce = true; | |
745 | #endif | |
746 | #ifdef OBJ_ELF | |
747 | /* The GNU toolchain uses an extension for ELF: a section | |
748 | beginning with the magic string .gnu.linkonce is a | |
749 | linkonce section. */ | |
750 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
751 | sizeof ".gnu.linkonce" - 1) == 0) | |
752 | linkonce = true; | |
753 | #endif | |
754 | ||
755 | if (linkonce) | |
756 | { | |
757 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
54815b9a | 758 | #ifdef UNDEFINED_DIFFERENCE_OK |
6259c65f ILT |
759 | if (fixp->fx_subsy != NULL) |
760 | fixp->fx_subsy->sy_used_in_reloc = 1; | |
54815b9a | 761 | #endif |
6259c65f ILT |
762 | goto done; |
763 | } | |
54815b9a | 764 | } |
54815b9a | 765 | |
d5364748 KR |
766 | /* Since we're reducing to section symbols, don't attempt to reduce |
767 | anything that's already using one. */ | |
98c6bbbe | 768 | if (sym->bsym->flags & BSF_SECTION_SYM) |
80aab579 ILT |
769 | { |
770 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 771 | goto done; |
80aab579 | 772 | } |
d5364748 KR |
773 | |
774 | /* Is there some other reason we can't adjust this one? (E.g., | |
775 | call/bal links in i960-bout symbols.) */ | |
776 | #ifdef obj_fix_adjustable | |
777 | if (! obj_fix_adjustable (fixp)) | |
80aab579 ILT |
778 | { |
779 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 780 | goto done; |
80aab579 | 781 | } |
d5364748 | 782 | #endif |
efa0c22e KR |
783 | |
784 | /* Is there some other (target cpu dependent) reason we can't adjust | |
5d0cd0b8 | 785 | this one? (E.g. relocations involving function addresses on |
efa0c22e KR |
786 | the PA. */ |
787 | #ifdef tc_fix_adjustable | |
788 | if (! tc_fix_adjustable (fixp)) | |
20b39b6f JL |
789 | { |
790 | fixp->fx_addsy->sy_used_in_reloc = 1; | |
a55774a1 | 791 | goto done; |
20b39b6f | 792 | } |
efa0c22e KR |
793 | #endif |
794 | ||
d5364748 KR |
795 | /* If the section symbol isn't going to be output, the relocs |
796 | at least should still work. If not, figure out what to do | |
5d0cd0b8 ILT |
797 | when we run into that case. |
798 | ||
799 | We refetch the segment when calling section_symbol, rather | |
800 | than using symsec, because S_GET_VALUE may wind up changing | |
801 | the section when it calls resolve_symbol_value. */ | |
d5364748 | 802 | fixp->fx_offset += S_GET_VALUE (sym); |
5d0cd0b8 | 803 | fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym)); |
80aab579 | 804 | fixp->fx_addsy->sy_used_in_reloc = 1; |
a55774a1 KR |
805 | |
806 | done: | |
807 | ; | |
d5364748 | 808 | } |
1cf7548e | 809 | #if 1/*def RELOC_REQUIRES_SYMBOL*/ |
e67a0640 KR |
810 | else |
811 | { | |
812 | /* There was no symbol required by this relocation. However, | |
813 | BFD doesn't really handle relocations without symbols well. | |
814 | (At least, the COFF support doesn't.) So for now we fake up | |
815 | a local symbol in the absolute section. */ | |
e8501a72 | 816 | |
1cf7548e | 817 | fixp->fx_addsy = section_symbol (absolute_section); |
a55774a1 | 818 | /* fixp->fx_addsy->sy_used_in_reloc = 1; */ |
e67a0640 KR |
819 | } |
820 | #endif | |
d5364748 KR |
821 | |
822 | dump_section_relocs (abfd, sec, stderr); | |
823 | } | |
824 | ||
43ca9aa6 | 825 | static void |
8d6c34a1 | 826 | write_relocs (abfd, sec, xxx) |
43ca9aa6 KR |
827 | bfd *abfd; |
828 | asection *sec; | |
a58374d7 | 829 | PTR xxx; |
43ca9aa6 KR |
830 | { |
831 | segment_info_type *seginfo = seg_info (sec); | |
80aab579 ILT |
832 | int i; |
833 | unsigned int n; | |
43ca9aa6 KR |
834 | arelent **relocs; |
835 | fixS *fixp; | |
98c6bbbe | 836 | char *err; |
43ca9aa6 | 837 | |
d5364748 KR |
838 | /* If seginfo is NULL, we did not create this section; don't do |
839 | anything with it. */ | |
840 | if (seginfo == NULL) | |
43ca9aa6 KR |
841 | return; |
842 | ||
843 | fixup_segment (seginfo->fix_root, sec); | |
844 | ||
3d3c5039 | 845 | n = 0; |
d5364748 KR |
846 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) |
847 | n++; | |
43ca9aa6 | 848 | |
d5364748 | 849 | #ifndef RELOC_EXPANSION_POSSIBLE |
43ca9aa6 | 850 | /* Set up reloc information as well. */ |
43ca9aa6 KR |
851 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, |
852 | n * sizeof (arelent *)); | |
8d6c34a1 | 853 | memset ((char*)relocs, 0, n * sizeof (arelent*)); |
43ca9aa6 | 854 | |
3d3c5039 ILT |
855 | i = 0; |
856 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
857 | { | |
858 | arelent *reloc; | |
3d3c5039 | 859 | bfd_reloc_status_type s; |
a043f579 | 860 | symbolS *sym; |
3d3c5039 | 861 | |
98c6bbbe | 862 | if (fixp->fx_done) |
3d3c5039 | 863 | { |
3d3c5039 ILT |
864 | n--; |
865 | continue; | |
866 | } | |
a043f579 ILT |
867 | |
868 | /* If this is an undefined symbol which was equated to another | |
869 | symbol, then use generate the reloc against the latter symbol | |
870 | rather than the former. */ | |
871 | sym = fixp->fx_addsy; | |
872 | while (sym->sy_value.X_op == O_symbol | |
873 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
874 | sym = sym->sy_value.X_add_symbol; | |
875 | fixp->fx_addsy = sym; | |
876 | ||
3d3c5039 ILT |
877 | reloc = tc_gen_reloc (sec, fixp); |
878 | if (!reloc) | |
879 | { | |
880 | n--; | |
881 | continue; | |
882 | } | |
5d0cd0b8 ILT |
883 | |
884 | #if 0 | |
885 | /* This test is triggered inappropriately for the SH. */ | |
c43d56f7 | 886 | if (fixp->fx_where + fixp->fx_size |
3d3c5039 ILT |
887 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
888 | abort (); | |
5d0cd0b8 | 889 | #endif |
335d35c8 | 890 | |
4acf8c78 KR |
891 | s = bfd_install_relocation (stdoutput, reloc, |
892 | fixp->fx_frag->fr_literal, | |
893 | fixp->fx_frag->fr_address, | |
894 | sec, &err); | |
3d3c5039 ILT |
895 | switch (s) |
896 | { | |
897 | case bfd_reloc_ok: | |
898 | break; | |
df44a852 KR |
899 | case bfd_reloc_overflow: |
900 | as_bad_where (fixp->fx_file, fixp->fx_line, "relocation overflow"); | |
901 | break; | |
3d3c5039 | 902 | default: |
4acf8c78 KR |
903 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
904 | fixp->fx_file, fixp->fx_line); | |
3d3c5039 ILT |
905 | } |
906 | relocs[i++] = reloc; | |
907 | } | |
d5364748 KR |
908 | #else |
909 | n = n * MAX_RELOC_EXPANSION; | |
910 | /* Set up reloc information as well. */ | |
911 | relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, | |
912 | n * sizeof (arelent *)); | |
913 | ||
914 | i = 0; | |
915 | for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) | |
916 | { | |
917 | arelent **reloc; | |
d5364748 KR |
918 | char *data; |
919 | bfd_reloc_status_type s; | |
a043f579 | 920 | symbolS *sym; |
d5364748 KR |
921 | int j; |
922 | ||
98c6bbbe | 923 | if (fixp->fx_done) |
d5364748 | 924 | { |
d5364748 KR |
925 | n--; |
926 | continue; | |
927 | } | |
a043f579 ILT |
928 | |
929 | /* If this is an undefined symbol which was equated to another | |
930 | symbol, then use generate the reloc against the latter symbol | |
931 | rather than the former. */ | |
932 | sym = fixp->fx_addsy; | |
933 | while (sym->sy_value.X_op == O_symbol | |
934 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
935 | sym = sym->sy_value.X_add_symbol; | |
936 | fixp->fx_addsy = sym; | |
937 | ||
d5364748 KR |
938 | reloc = tc_gen_reloc (sec, fixp); |
939 | ||
940 | for (j = 0; reloc[j]; j++) | |
941 | { | |
942 | relocs[i++] = reloc[j]; | |
943 | assert(i <= n); | |
944 | } | |
945 | data = fixp->fx_frag->fr_literal + fixp->fx_where; | |
c43d56f7 | 946 | if (fixp->fx_where + fixp->fx_size |
d5364748 | 947 | > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) |
73d25784 ILT |
948 | as_bad_where (fixp->fx_file, fixp->fx_line, |
949 | "internal error: fixup not contained within frag"); | |
d5364748 KR |
950 | for (j = 0; reloc[j]; j++) |
951 | { | |
a55774a1 KR |
952 | s = bfd_install_relocation (stdoutput, reloc[j], |
953 | fixp->fx_frag->fr_literal, | |
954 | fixp->fx_frag->fr_address, | |
955 | sec, &err); | |
d5364748 KR |
956 | switch (s) |
957 | { | |
98c6bbbe KR |
958 | case bfd_reloc_ok: |
959 | break; | |
4acf8c78 KR |
960 | case bfd_reloc_overflow: |
961 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
962 | "relocation overflow"); | |
963 | break; | |
98c6bbbe | 964 | default: |
4acf8c78 KR |
965 | as_fatal ("%s:%u: bad return from bfd_perform_relocation", |
966 | fixp->fx_file, fixp->fx_line); | |
d5364748 KR |
967 | } |
968 | } | |
969 | } | |
970 | n = i; | |
971 | #endif | |
972 | ||
1cf7548e KR |
973 | #ifdef DEBUG4 |
974 | { | |
975 | int i, j, nsyms; | |
976 | asymbol **sympp; | |
977 | sympp = bfd_get_outsymbols (stdoutput); | |
978 | nsyms = bfd_get_symcount (stdoutput); | |
979 | for (i = 0; i < n; i++) | |
980 | if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0) | |
981 | { | |
982 | for (j = 0; j < nsyms; j++) | |
983 | if (sympp[j] == *relocs[i]->sym_ptr_ptr) | |
984 | break; | |
985 | if (j == nsyms) | |
986 | abort (); | |
987 | } | |
988 | } | |
989 | #endif | |
990 | ||
3d3c5039 ILT |
991 | if (n) |
992 | bfd_set_reloc (stdoutput, sec, relocs, n); | |
d5364748 KR |
993 | else |
994 | bfd_set_section_flags (abfd, sec, | |
80aab579 ILT |
995 | (bfd_get_section_flags (abfd, sec) |
996 | & (flagword) ~SEC_RELOC)); | |
98c6bbbe KR |
997 | |
998 | #ifdef DEBUG3 | |
d5364748 KR |
999 | { |
1000 | int i; | |
1001 | arelent *r; | |
1002 | asymbol *s; | |
1003 | fprintf (stderr, "relocs for sec %s\n", sec->name); | |
1004 | for (i = 0; i < n; i++) | |
1005 | { | |
1006 | r = relocs[i]; | |
1007 | s = *r->sym_ptr_ptr; | |
1008 | fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n", | |
1009 | i, r, r->address, s->name, r->addend); | |
1010 | } | |
1011 | } | |
1012 | #endif | |
8d6c34a1 | 1013 | } |
d5364748 | 1014 | |
8d6c34a1 KR |
1015 | static void |
1016 | write_contents (abfd, sec, xxx) | |
1017 | bfd *abfd; | |
1018 | asection *sec; | |
a58374d7 | 1019 | PTR xxx; |
8d6c34a1 KR |
1020 | { |
1021 | segment_info_type *seginfo = seg_info (sec); | |
1022 | unsigned long offset = 0; | |
80aab579 | 1023 | fragS *f; |
3d3c5039 ILT |
1024 | |
1025 | /* Write out the frags. */ | |
f37449aa ILT |
1026 | if (seginfo == NULL |
1027 | || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) | |
d5364748 KR |
1028 | return; |
1029 | ||
80aab579 ILT |
1030 | for (f = seginfo->frchainP->frch_root; |
1031 | f; | |
1032 | f = f->fr_next) | |
43ca9aa6 KR |
1033 | { |
1034 | int x; | |
1035 | unsigned long fill_size; | |
1036 | char *fill_literal; | |
1037 | long count; | |
1038 | ||
80aab579 ILT |
1039 | assert (f->fr_type == rs_fill); |
1040 | if (f->fr_fix) | |
43ca9aa6 KR |
1041 | { |
1042 | x = bfd_set_section_contents (stdoutput, sec, | |
80aab579 ILT |
1043 | f->fr_literal, (file_ptr) offset, |
1044 | (bfd_size_type) f->fr_fix); | |
1cf7548e KR |
1045 | if (x == false) |
1046 | { | |
1047 | bfd_perror (stdoutput->filename); | |
1048 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
4acf8c78 | 1049 | exit (EXIT_FAILURE); |
1cf7548e | 1050 | } |
80aab579 | 1051 | offset += f->fr_fix; |
43ca9aa6 | 1052 | } |
80aab579 ILT |
1053 | fill_literal = f->fr_literal + f->fr_fix; |
1054 | fill_size = f->fr_var; | |
1055 | count = f->fr_offset; | |
43ca9aa6 KR |
1056 | assert (count >= 0); |
1057 | if (fill_size && count) | |
d9d6f094 KR |
1058 | { |
1059 | char buf[256]; | |
305a3af6 SC |
1060 | if (fill_size > sizeof(buf)) |
1061 | { | |
1062 | /* Do it the old way. Can this ever happen? */ | |
1063 | while (count--) | |
1064 | { | |
1065 | x = bfd_set_section_contents (stdoutput, sec, | |
1066 | fill_literal, | |
1067 | (file_ptr) offset, | |
1068 | (bfd_size_type) fill_size); | |
1069 | if (x == false) | |
1070 | { | |
1071 | bfd_perror (stdoutput->filename); | |
1072 | as_perror ("FATAL: Can't write %s", stdoutput->filename); | |
1073 | exit (EXIT_FAILURE); | |
1074 | } | |
1075 | offset += fill_size; | |
1076 | } | |
1077 | } | |
1078 | else | |
1079 | { | |
1080 | /* Build a buffer full of fill objects and output it as | |
1081 | often as necessary. This saves on the overhead of | |
1082 | potentially lots of bfd_set_section_contents calls. */ | |
1083 | int n_per_buf, i; | |
1084 | if (fill_size == 1) | |
1085 | { | |
1086 | n_per_buf = sizeof (buf); | |
1087 | memset (buf, *fill_literal, n_per_buf); | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | char *bufp; | |
1092 | n_per_buf = sizeof(buf)/fill_size; | |
1093 | for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) | |
1094 | memcpy(bufp, fill_literal, fill_size); | |
1095 | } | |
1096 | for (; count > 0; count -= n_per_buf) | |
1097 | { | |
1098 | n_per_buf = n_per_buf > count ? count : n_per_buf; | |
1099 | x = bfd_set_section_contents (stdoutput, sec, | |
1100 | buf, (file_ptr) offset, | |
1101 | (bfd_size_type) n_per_buf * fill_size); | |
1102 | if (x != true) | |
1103 | as_fatal ("Cannot write to output file."); | |
1104 | offset += n_per_buf * fill_size; | |
1105 | } | |
1106 | } | |
d9d6f094 | 1107 | } |
43ca9aa6 | 1108 | } |
43ca9aa6 KR |
1109 | } |
1110 | #endif | |
1111 | ||
80aab579 | 1112 | #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT)) |
b23f6743 KR |
1113 | static void |
1114 | merge_data_into_text () | |
1115 | { | |
4064305e | 1116 | #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS) |
b23f6743 KR |
1117 | seg_info (text_section)->frchainP->frch_last->fr_next = |
1118 | seg_info (data_section)->frchainP->frch_root; | |
1119 | seg_info (text_section)->frchainP->frch_last = | |
1120 | seg_info (data_section)->frchainP->frch_last; | |
1121 | seg_info (data_section)->frchainP = 0; | |
1122 | #else | |
1123 | fixS *tmp; | |
1124 | ||
1125 | text_last_frag->fr_next = data_frag_root; | |
1126 | text_last_frag = data_last_frag; | |
1127 | data_last_frag = NULL; | |
1128 | data_frag_root = NULL; | |
1129 | if (text_fix_root) | |
1130 | { | |
1131 | for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; | |
1132 | tmp->fx_next = data_fix_root; | |
1133 | text_fix_tail = data_fix_tail; | |
1134 | } | |
1135 | else | |
1136 | text_fix_root = data_fix_root; | |
1137 | data_fix_root = NULL; | |
1138 | #endif | |
1139 | } | |
80aab579 | 1140 | #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ |
b23f6743 KR |
1141 | |
1142 | #if !defined (BFD_ASSEMBLER) && !defined (BFD) | |
1143 | static void | |
1144 | relax_and_size_all_segments () | |
1145 | { | |
13e9182d KR |
1146 | fragS *fragP; |
1147 | ||
b23f6743 KR |
1148 | relax_segment (text_frag_root, SEG_TEXT); |
1149 | relax_segment (data_frag_root, SEG_DATA); | |
1150 | relax_segment (bss_frag_root, SEG_BSS); | |
1151 | /* | |
1152 | * Now the addresses of frags are correct within the segment. | |
1153 | */ | |
1154 | ||
1155 | know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); | |
1156 | H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); | |
1157 | text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); | |
1158 | ||
1159 | /* | |
1160 | * Join the 2 segments into 1 huge segment. | |
1161 | * To do this, re-compute every rn_address in the SEG_DATA frags. | |
1162 | * Then join the data frags after the text frags. | |
1163 | * | |
1164 | * Determine a_data [length of data segment]. | |
1165 | */ | |
1166 | if (data_frag_root) | |
1167 | { | |
1168 | register relax_addressT slide; | |
1169 | ||
1170 | know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); | |
1171 | ||
1172 | H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); | |
1173 | data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); | |
1174 | slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ | |
1175 | #ifdef OBJ_BOUT | |
1176 | #define RoundUp(N,S) (((N)+(S)-1)&-(S)) | |
1177 | /* For b.out: If the data section has a strict alignment | |
1178 | requirement, its load address in the .o file will be | |
1179 | rounded up from the size of the text section. These | |
1180 | two values are *not* the same! Similarly for the bss | |
1181 | section.... */ | |
1182 | slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); | |
1183 | #endif | |
1184 | ||
1185 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
1186 | { | |
1187 | fragP->fr_address += slide; | |
1188 | } /* for each data frag */ | |
1189 | ||
1190 | know (text_last_frag != 0); | |
1191 | text_last_frag->fr_next = data_frag_root; | |
1192 | } | |
1193 | else | |
1194 | { | |
1195 | H_SET_DATA_SIZE (&headers, 0); | |
1196 | } | |
1197 | ||
1198 | #ifdef OBJ_BOUT | |
1199 | /* See above comments on b.out data section address. */ | |
1200 | { | |
1201 | long bss_vma; | |
1202 | if (data_last_frag == 0) | |
1203 | bss_vma = H_GET_TEXT_SIZE (&headers); | |
1204 | else | |
1205 | bss_vma = data_last_frag->fr_address; | |
1206 | bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); | |
1207 | bss_address_frag.fr_address = bss_vma; | |
1208 | } | |
1209 | #else /* ! OBJ_BOUT */ | |
1210 | bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + | |
1211 | H_GET_DATA_SIZE (&headers)); | |
1212 | ||
efa0c22e | 1213 | #endif /* ! OBJ_BOUT */ |
b23f6743 KR |
1214 | |
1215 | /* Slide all the frags */ | |
1216 | if (bss_frag_root) | |
1217 | { | |
1218 | relax_addressT slide = bss_address_frag.fr_address; | |
1219 | ||
1220 | for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) | |
1221 | { | |
1222 | fragP->fr_address += slide; | |
1223 | } /* for each bss frag */ | |
1224 | } | |
1225 | ||
b23f6743 KR |
1226 | if (bss_last_frag) |
1227 | H_SET_BSS_SIZE (&headers, | |
1228 | bss_last_frag->fr_address - bss_frag_root->fr_address); | |
1229 | else | |
1230 | H_SET_BSS_SIZE (&headers, 0); | |
1231 | } | |
1232 | #endif /* ! BFD_ASSEMBLER && ! BFD */ | |
1233 | ||
d5364748 KR |
1234 | #if defined (BFD_ASSEMBLER) || !defined (BFD) |
1235 | ||
1b96bdce | 1236 | #ifdef BFD_ASSEMBLER |
1cf7548e KR |
1237 | static void |
1238 | set_symtab () | |
1239 | { | |
1240 | int nsyms; | |
1241 | asymbol **asympp; | |
1242 | symbolS *symp; | |
1243 | boolean result; | |
1244 | extern PTR bfd_alloc PARAMS ((bfd *, size_t)); | |
1245 | ||
1246 | /* Count symbols. We can't rely on a count made by the loop in | |
1247 | write_object_file, because *_frob_file may add a new symbol or | |
1248 | two. */ | |
1249 | nsyms = 0; | |
1250 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1251 | nsyms++; | |
1252 | ||
1253 | if (nsyms) | |
1254 | { | |
1255 | int i; | |
1256 | ||
1257 | asympp = (asymbol **) bfd_alloc (stdoutput, | |
1258 | nsyms * sizeof (asymbol *)); | |
1259 | symp = symbol_rootP; | |
1260 | for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) | |
1261 | { | |
1262 | asympp[i] = symp->bsym; | |
1263 | symp->written = 1; | |
1264 | } | |
1265 | } | |
1266 | else | |
1267 | asympp = 0; | |
1268 | result = bfd_set_symtab (stdoutput, asympp, nsyms); | |
1269 | assert (result == true); | |
1270 | symbol_table_frozen = 1; | |
1271 | } | |
1b96bdce | 1272 | #endif |
1cf7548e | 1273 | |
5d0cd0b8 | 1274 | void |
6efd877d | 1275 | write_object_file () |
45432836 | 1276 | { |
741f4d66 | 1277 | struct frchain *frchainP; /* Track along all frchains. */ |
58d4951d | 1278 | #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) |
741f4d66 | 1279 | fragS *fragP; /* Track along all frags. */ |
58d4951d | 1280 | #endif |
6efd877d | 1281 | |
43ca9aa6 KR |
1282 | /* Do we really want to write it? */ |
1283 | { | |
1284 | int n_warns, n_errs; | |
1285 | n_warns = had_warnings (); | |
1286 | n_errs = had_errors (); | |
1287 | /* The -Z flag indicates that an object file should be generated, | |
1288 | regardless of warnings and errors. */ | |
def66e24 | 1289 | if (flag_always_generate_output) |
43ca9aa6 KR |
1290 | { |
1291 | if (n_warns || n_errs) | |
1292 | as_warn ("%d error%s, %d warning%s, generating bad object file.\n", | |
1293 | n_errs, n_errs == 1 ? "" : "s", | |
1294 | n_warns, n_warns == 1 ? "" : "s"); | |
1295 | } | |
1296 | else | |
1297 | { | |
1298 | if (n_errs) | |
1299 | as_fatal ("%d error%s, %d warning%s, no object file generated.\n", | |
1300 | n_errs, n_errs == 1 ? "" : "s", | |
1301 | n_warns, n_warns == 1 ? "" : "s"); | |
1302 | } | |
1303 | } | |
1304 | ||
3eb802b5 | 1305 | #ifdef OBJ_VMS |
1cf7548e KR |
1306 | /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call |
1307 | a routine to check for the definition of the procedure "_main", | |
1308 | and if so -- fix it up so that it can be program entry point. */ | |
8e86815b | 1309 | vms_check_for_main (); |
3f81f3cf | 1310 | #endif /* OBJ_VMS */ |
43ca9aa6 KR |
1311 | |
1312 | /* After every sub-segment, we fake an ".align ...". This conforms to | |
1313 | BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of | |
1314 | frag that requires least thought. ".align" frags like to have a | |
1315 | following frag since that makes calculating their intended length | |
1316 | trivial. | |
1317 | ||
1318 | @@ Is this really necessary?? */ | |
3eb802b5 | 1319 | #ifndef SUB_SEGMENT_ALIGN |
43ca9aa6 | 1320 | #ifdef BFD_ASSEMBLER |
f2f7d044 | 1321 | #define SUB_SEGMENT_ALIGN(SEG) (0) |
43ca9aa6 | 1322 | #else |
f2f7d044 | 1323 | #define SUB_SEGMENT_ALIGN(SEG) (2) |
43ca9aa6 | 1324 | #endif |
3eb802b5 | 1325 | #endif |
6efd877d KR |
1326 | for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) |
1327 | { | |
43ca9aa6 | 1328 | subseg_set (frchainP->frch_seg, frchainP->frch_subseg); |
f2f7d044 | 1329 | frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); |
43ca9aa6 KR |
1330 | /* frag_align will have left a new frag. |
1331 | Use this last frag for an empty ".fill". | |
1332 | ||
1333 | For this segment ... | |
1334 | Create a last frag. Do not leave a "being filled in frag". */ | |
6efd877d KR |
1335 | frag_wane (frag_now); |
1336 | frag_now->fr_fix = 0; | |
1337 | know (frag_now->fr_next == NULL); | |
43ca9aa6 | 1338 | } |
6efd877d | 1339 | |
43ca9aa6 KR |
1340 | /* From now on, we don't care about sub-segments. Build one frag chain |
1341 | for each segment. Linked thru fr_next. */ | |
65bfcf2e | 1342 | |
43ca9aa6 KR |
1343 | #ifdef BFD_ASSEMBLER |
1344 | /* Remove the sections created by gas for its own purposes. */ | |
1345 | { | |
1346 | asection **seclist, *sec; | |
a55774a1 KR |
1347 | int i; |
1348 | ||
43ca9aa6 KR |
1349 | seclist = &stdoutput->sections; |
1350 | while (seclist && *seclist) | |
1351 | { | |
1352 | sec = *seclist; | |
5ac34ac3 | 1353 | while (sec == reg_section || sec == expr_section) |
43ca9aa6 KR |
1354 | { |
1355 | sec = sec->next; | |
1356 | *seclist = sec; | |
1357 | stdoutput->section_count--; | |
1358 | if (!sec) | |
1359 | break; | |
1360 | } | |
1361 | if (*seclist) | |
1362 | seclist = &(*seclist)->next; | |
1363 | } | |
a55774a1 KR |
1364 | i = 0; |
1365 | bfd_map_over_sections (stdoutput, renumber_sections, &i); | |
43ca9aa6 KR |
1366 | } |
1367 | ||
1368 | bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0); | |
1369 | #else | |
6efd877d KR |
1370 | remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); |
1371 | remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); | |
1372 | remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); | |
43ca9aa6 | 1373 | #endif |
6efd877d | 1374 | |
43ca9aa6 KR |
1375 | /* We have two segments. If user gave -R flag, then we must put the |
1376 | data frags into the text segment. Do this before relaxing so | |
1377 | we know to take advantage of -R and make shorter addresses. */ | |
1378 | #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER) | |
def66e24 | 1379 | if (flag_readonly_data_in_text) |
6efd877d | 1380 | { |
b23f6743 | 1381 | merge_data_into_text (); |
6efd877d KR |
1382 | } |
1383 | #endif | |
43ca9aa6 KR |
1384 | |
1385 | #ifdef BFD_ASSEMBLER | |
1386 | bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); | |
1387 | #else | |
b23f6743 | 1388 | relax_and_size_all_segments (); |
43ca9aa6 | 1389 | #endif /* BFD_ASSEMBLER */ |
65bfcf2e | 1390 | |
43ca9aa6 | 1391 | #ifndef BFD_ASSEMBLER |
6efd877d | 1392 | /* |
7f2cb270 KR |
1393 | * |
1394 | * Crawl the symbol chain. | |
1395 | * | |
1396 | * For each symbol whose value depends on a frag, take the address of | |
1397 | * that frag and subsume it into the value of the symbol. | |
1398 | * After this, there is just one way to lookup a symbol value. | |
1399 | * Values are left in their final state for object file emission. | |
1400 | * We adjust the values of 'L' local symbols, even if we do | |
1401 | * not intend to emit them to the object file, because their values | |
1402 | * are needed for fix-ups. | |
1403 | * | |
1404 | * Unless we saw a -L flag, remove all symbols that begin with 'L' | |
1405 | * from the symbol chain. (They are still pointed to by the fixes.) | |
1406 | * | |
1407 | * Count the remaining symbols. | |
1408 | * Assign a symbol number to each symbol. | |
1409 | * Count the number of string-table chars we will emit. | |
1410 | * Put this info into the headers as appropriate. | |
1411 | * | |
1412 | */ | |
6efd877d KR |
1413 | know (zero_address_frag.fr_address == 0); |
1414 | string_byte_count = sizeof (string_byte_count); | |
1415 | ||
1416 | obj_crawl_symbol_chain (&headers); | |
1417 | ||
1418 | if (string_byte_count == sizeof (string_byte_count)) | |
43ca9aa6 | 1419 | string_byte_count = 0; |
6efd877d KR |
1420 | |
1421 | H_SET_STRING_SIZE (&headers, string_byte_count); | |
1422 | ||
1423 | /* | |
7f2cb270 KR |
1424 | * Addresses of frags now reflect addresses we use in the object file. |
1425 | * Symbol values are correct. | |
1426 | * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. | |
1427 | * Also converting any machine-dependent frags using md_convert_frag(); | |
1428 | */ | |
6efd877d KR |
1429 | subseg_change (SEG_TEXT, 0); |
1430 | ||
1431 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
1432 | { | |
d4083e29 | 1433 | cvt_frag_to_fill (&headers, SEG_TEXT, fragP); |
6efd877d | 1434 | |
43ca9aa6 KR |
1435 | /* Some assert macros don't work with # directives mixed in. */ |
1436 | #ifndef NDEBUG | |
1437 | if (!(fragP->fr_next == NULL | |
ebfb4167 | 1438 | #ifdef OBJ_BOUT |
43ca9aa6 | 1439 | || fragP->fr_next == data_frag_root |
ebfb4167 | 1440 | #endif |
6efd877d | 1441 | || ((fragP->fr_next->fr_address - fragP->fr_address) |
43ca9aa6 KR |
1442 | == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var)))) |
1443 | abort (); | |
1444 | #endif | |
1445 | } | |
1446 | #endif /* ! BFD_ASSEMBLER */ | |
6efd877d | 1447 | |
fecd2382 | 1448 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1449 | { |
1450 | struct broken_word *lie; | |
1451 | struct broken_word **prevP; | |
1452 | ||
1453 | prevP = &broken_words; | |
1454 | for (lie = broken_words; lie; lie = lie->next_broken_word) | |
1455 | if (!lie->added) | |
a39116f1 | 1456 | { |
5ac34ac3 ILT |
1457 | expressionS exp; |
1458 | ||
1459 | exp.X_op = O_subtract; | |
1460 | exp.X_add_symbol = lie->add; | |
1461 | exp.X_op_symbol = lie->sub; | |
1462 | exp.X_add_number = lie->addnum; | |
43ca9aa6 | 1463 | #ifdef BFD_ASSEMBLER |
d9d6f094 KR |
1464 | #ifdef TC_CONS_FIX_NEW |
1465 | TC_CONS_FIX_NEW (lie->frag, | |
1466 | lie->word_goes_here - lie->frag->fr_literal, | |
1467 | 2, &exp); | |
1468 | #else | |
5ac34ac3 ILT |
1469 | fix_new_exp (lie->frag, |
1470 | lie->word_goes_here - lie->frag->fr_literal, | |
5d0cd0b8 | 1471 | 2, &exp, 0, BFD_RELOC_16); |
d9d6f094 | 1472 | #endif |
43ca9aa6 KR |
1473 | #else |
1474 | #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) | |
5ac34ac3 ILT |
1475 | fix_new_exp (lie->frag, |
1476 | lie->word_goes_here - lie->frag->fr_literal, | |
1477 | 2, &exp, 0, NO_RELOC); | |
43ca9aa6 | 1478 | #else |
fecd2382 | 1479 | #ifdef TC_NS32K |
5ac34ac3 ILT |
1480 | fix_new_ns32k_exp (lie->frag, |
1481 | lie->word_goes_here - lie->frag->fr_literal, | |
1482 | 2, &exp, 0, 0, 2, 0, 0); | |
343fb08d | 1483 | #else |
5ac34ac3 ILT |
1484 | fix_new_exp (lie->frag, |
1485 | lie->word_goes_here - lie->frag->fr_literal, | |
1486 | 2, &exp, 0, 0); | |
fecd2382 | 1487 | #endif /* TC_NS32K */ |
43ca9aa6 KR |
1488 | #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ |
1489 | #endif /* BFD_ASSEMBLER */ | |
6efd877d | 1490 | *prevP = lie->next_broken_word; |
a39116f1 | 1491 | } |
6efd877d KR |
1492 | else |
1493 | prevP = &(lie->next_broken_word); | |
1494 | ||
1495 | for (lie = broken_words; lie;) | |
1496 | { | |
1497 | struct broken_word *untruth; | |
1498 | char *table_ptr; | |
d5364748 KR |
1499 | addressT table_addr; |
1500 | addressT from_addr, to_addr; | |
6efd877d KR |
1501 | int n, m; |
1502 | ||
6efd877d KR |
1503 | fragP = lie->dispfrag; |
1504 | ||
43ca9aa6 | 1505 | /* Find out how many broken_words go here. */ |
6efd877d KR |
1506 | n = 0; |
1507 | for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1508 | if (untruth->added == 1) | |
1509 | n++; | |
1510 | ||
1511 | table_ptr = lie->dispfrag->fr_opcode; | |
1512 | table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); | |
43ca9aa6 KR |
1513 | /* Create the jump around the long jumps. This is a short |
1514 | jump from table_ptr+0 to table_ptr+n*long_jump_size. */ | |
6efd877d KR |
1515 | from_addr = table_addr; |
1516 | to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; | |
1517 | md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); | |
1518 | table_ptr += md_short_jump_size; | |
1519 | table_addr += md_short_jump_size; | |
1520 | ||
1521 | for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) | |
1522 | { | |
1523 | if (lie->added == 2) | |
1524 | continue; | |
1525 | /* Patch the jump table */ | |
1526 | /* This is the offset from ??? to table_ptr+0 */ | |
d5364748 | 1527 | to_addr = table_addr - S_GET_VALUE (lie->sub); |
d9d6f094 KR |
1528 | #ifdef BFD_ASSEMBLER |
1529 | to_addr -= lie->sub->sy_frag->fr_address; | |
1530 | #endif | |
6efd877d KR |
1531 | md_number_to_chars (lie->word_goes_here, to_addr, 2); |
1532 | for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) | |
1533 | { | |
1534 | if (untruth->use_jump == lie) | |
1535 | md_number_to_chars (untruth->word_goes_here, to_addr, 2); | |
1536 | } | |
1537 | ||
1538 | /* Install the long jump */ | |
1539 | /* this is a long jump from table_ptr+0 to the final target */ | |
1540 | from_addr = table_addr; | |
1541 | to_addr = S_GET_VALUE (lie->add) + lie->addnum; | |
d9d6f094 KR |
1542 | #ifdef BFD_ASSEMBLER |
1543 | to_addr += lie->add->sy_frag->fr_address; | |
1544 | #endif | |
6efd877d KR |
1545 | md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); |
1546 | table_ptr += md_long_jump_size; | |
1547 | table_addr += md_long_jump_size; | |
1548 | } | |
1549 | } | |
1550 | } | |
fecd2382 | 1551 | #endif /* not WORKING_DOT_WORD */ |
6efd877d | 1552 | |
43ca9aa6 | 1553 | #ifndef BFD_ASSEMBLER |
3eb802b5 | 1554 | #ifndef OBJ_VMS |
6efd877d | 1555 | { /* not vms */ |
3f81f3cf | 1556 | char *the_object_file; |
1cf7548e | 1557 | long object_file_size; |
6efd877d | 1558 | /* |
3eb802b5 ILT |
1559 | * Scan every FixS performing fixups. We had to wait until now to do |
1560 | * this because md_convert_frag() may have made some fixSs. | |
1561 | */ | |
6efd877d KR |
1562 | int trsize, drsize; |
1563 | ||
1564 | subseg_change (SEG_TEXT, 0); | |
d5364748 | 1565 | trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT); |
6efd877d | 1566 | subseg_change (SEG_DATA, 0); |
d5364748 | 1567 | drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); |
6efd877d KR |
1568 | H_SET_RELOCATION_SIZE (&headers, trsize, drsize); |
1569 | ||
1570 | /* FIXME move this stuff into the pre-write-hook */ | |
1571 | H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); | |
1572 | H_SET_ENTRY_POINT (&headers, 0); | |
1573 | ||
1574 | obj_pre_write_hook (&headers); /* extra coff stuff */ | |
6efd877d KR |
1575 | |
1576 | object_file_size = H_GET_FILE_SIZE (&headers); | |
1577 | next_object_file_charP = the_object_file = xmalloc (object_file_size); | |
1578 | ||
1579 | output_file_create (out_file_name); | |
1580 | ||
1581 | obj_header_append (&next_object_file_charP, &headers); | |
1582 | ||
1583 | know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); | |
1584 | ||
1585 | /* | |
43ca9aa6 KR |
1586 | * Emit code. |
1587 | */ | |
6efd877d KR |
1588 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) |
1589 | { | |
1590 | register long count; | |
1591 | register char *fill_literal; | |
1592 | register long fill_size; | |
1593 | ||
c151fd1e | 1594 | PROGRESS (1); |
6efd877d KR |
1595 | know (fragP->fr_type == rs_fill); |
1596 | append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); | |
1597 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
1598 | fill_size = fragP->fr_var; | |
1599 | know (fragP->fr_offset >= 0); | |
1600 | ||
1601 | for (count = fragP->fr_offset; count; count--) | |
1602 | { | |
1603 | append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); | |
1604 | } /* for each */ | |
1605 | ||
1606 | } /* for each code frag. */ | |
1607 | ||
1608 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); | |
1609 | ||
1610 | /* | |
43ca9aa6 KR |
1611 | * Emit relocations. |
1612 | */ | |
6efd877d KR |
1613 | obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); |
1614 | 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 | 1615 | #ifdef TC_I960 |
6efd877d | 1616 | /* Make addresses in data relocation directives relative to beginning of |
43ca9aa6 KR |
1617 | * first data fragment, not end of last text fragment: alignment of the |
1618 | * start of the data segment may place a gap between the segments. | |
1619 | */ | |
6efd877d | 1620 | obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); |
fecd2382 | 1621 | #else /* TC_I960 */ |
6efd877d | 1622 | obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); |
fecd2382 | 1623 | #endif /* TC_I960 */ |
6efd877d KR |
1624 | |
1625 | know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers))); | |
1626 | ||
1627 | /* | |
43ca9aa6 KR |
1628 | * Emit line number entries. |
1629 | */ | |
6efd877d KR |
1630 | OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); |
1631 | 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))); | |
1632 | ||
1633 | /* | |
3eb802b5 ILT |
1634 | * Emit symbols. |
1635 | */ | |
6efd877d KR |
1636 | obj_emit_symbols (&next_object_file_charP, symbol_rootP); |
1637 | 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))); | |
1638 | ||
1639 | /* | |
3eb802b5 ILT |
1640 | * Emit strings. |
1641 | */ | |
6efd877d KR |
1642 | |
1643 | if (string_byte_count > 0) | |
1644 | { | |
1645 | obj_emit_strings (&next_object_file_charP); | |
1646 | } /* only if we have a string table */ | |
1647 | ||
45432836 | 1648 | #ifdef BFD_HEADERS |
6efd877d KR |
1649 | bfd_seek (stdoutput, 0, 0); |
1650 | bfd_write (the_object_file, 1, object_file_size, stdoutput); | |
45432836 | 1651 | #else |
6efd877d KR |
1652 | |
1653 | /* Write the data to the file */ | |
1654 | output_file_append (the_object_file, object_file_size, out_file_name); | |
3f81f3cf | 1655 | free (the_object_file); |
45432836 | 1656 | #endif |
6efd877d | 1657 | } /* non vms output */ |
3f81f3cf | 1658 | #else /* OBJ_VMS */ |
6efd877d | 1659 | /* |
3eb802b5 ILT |
1660 | * Now do the VMS-dependent part of writing the object file |
1661 | */ | |
8e86815b | 1662 | vms_write_object_file (H_GET_TEXT_SIZE (&headers), |
85825401 ILT |
1663 | H_GET_DATA_SIZE (&headers), |
1664 | H_GET_BSS_SIZE (&headers), | |
3eb802b5 | 1665 | text_frag_root, data_frag_root); |
3f81f3cf | 1666 | #endif /* OBJ_VMS */ |
43ca9aa6 | 1667 | #else /* BFD_ASSEMBLER */ |
6efd877d | 1668 | |
4acf8c78 KR |
1669 | /* Resolve symbol values. This needs to be done before processing |
1670 | the relocations. */ | |
1671 | if (symbol_rootP) | |
1672 | { | |
1673 | symbolS *symp; | |
1674 | ||
1675 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1676 | if (!symp->sy_resolved) | |
1677 | resolve_symbol_value (symp); | |
1678 | } | |
1679 | ||
c151fd1e KR |
1680 | PROGRESS (1); |
1681 | ||
5d0cd0b8 ILT |
1682 | #ifdef tc_frob_file_before_adjust |
1683 | tc_frob_file_before_adjust (); | |
1684 | #endif | |
1685 | #ifdef obj_frob_file_before_adjust | |
1686 | obj_frob_file_before_adjust (); | |
1687 | #endif | |
1688 | ||
d5364748 KR |
1689 | bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); |
1690 | ||
43ca9aa6 KR |
1691 | /* Set up symbol table, and write it out. */ |
1692 | if (symbol_rootP) | |
1693 | { | |
43ca9aa6 KR |
1694 | symbolS *symp; |
1695 | ||
1696 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
1697 | { | |
262b22cd | 1698 | int punt = 0; |
c151fd1e KR |
1699 | const char *name; |
1700 | ||
1356d77d ILT |
1701 | if (symp->sy_mri_common) |
1702 | { | |
1703 | if (S_IS_EXTERNAL (symp)) | |
1704 | as_bad ("%s: global symbols not supported in common sections", | |
1705 | S_GET_NAME (symp)); | |
1706 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1707 | continue; | |
1708 | } | |
1709 | ||
c151fd1e KR |
1710 | name = S_GET_NAME (symp); |
1711 | if (name) | |
1712 | { | |
a2a5a4fa | 1713 | const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); |
c151fd1e KR |
1714 | /* They only differ if `name' is a fb or dollar local |
1715 | label name. */ | |
1716 | if (name2 != name && ! S_IS_DEFINED (symp)) | |
1717 | as_bad ("local label %s is not defined", name2); | |
1718 | } | |
262b22cd | 1719 | |
4acf8c78 KR |
1720 | /* Do it again, because adjust_reloc_syms might introduce |
1721 | more symbols. They'll probably only be section symbols, | |
1722 | but they'll still need to have the values computed. */ | |
5868b1fe ILT |
1723 | if (! symp->sy_resolved) |
1724 | { | |
5ac34ac3 | 1725 | if (symp->sy_value.X_op == O_constant) |
5868b1fe ILT |
1726 | { |
1727 | /* This is the normal case; skip the call. */ | |
1728 | S_SET_VALUE (symp, | |
1729 | (S_GET_VALUE (symp) | |
1730 | + symp->sy_frag->fr_address)); | |
1731 | symp->sy_resolved = 1; | |
1732 | } | |
1733 | else | |
1734 | resolve_symbol_value (symp); | |
1735 | } | |
1736 | ||
a043f579 ILT |
1737 | /* Skip symbols which were equated to undefined or common |
1738 | symbols. */ | |
1739 | if (symp->sy_value.X_op == O_symbol | |
1740 | && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp))) | |
1741 | { | |
1742 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
1743 | continue; | |
1744 | } | |
1745 | ||
43ca9aa6 KR |
1746 | /* So far, common symbols have been treated like undefined symbols. |
1747 | Put them in the common section now. */ | |
1748 | if (S_IS_DEFINED (symp) == 0 | |
1749 | && S_GET_VALUE (symp) != 0) | |
d9d6f094 | 1750 | S_SET_SEGMENT (symp, bfd_com_section_ptr); |
43ca9aa6 | 1751 | #if 0 |
5868b1fe | 1752 | printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", |
43ca9aa6 KR |
1753 | S_GET_NAME (symp), symp, |
1754 | S_GET_VALUE (symp), | |
d5364748 | 1755 | symp->bsym->flags, |
43ca9aa6 KR |
1756 | segment_name (symp->bsym->section)); |
1757 | #endif | |
335d35c8 | 1758 | |
80aab579 | 1759 | #ifdef obj_frob_symbol |
262b22cd | 1760 | obj_frob_symbol (symp, punt); |
43ca9aa6 KR |
1761 | #endif |
1762 | #ifdef tc_frob_symbol | |
262b22cd | 1763 | if (! punt || symp->sy_used_in_reloc) |
335d35c8 | 1764 | tc_frob_symbol (symp, punt); |
43ca9aa6 | 1765 | #endif |
80aab579 | 1766 | |
262b22cd ILT |
1767 | /* If we don't want to keep this symbol, splice it out of |
1768 | the chain now. If EMIT_SECTION_SYMBOLS is 0, we never | |
1769 | want section symbols. Otherwise, we skip local symbols | |
1770 | and symbols that the frob_symbol macros told us to punt, | |
1771 | but we keep such symbols if they are used in relocs. */ | |
1772 | if ((! EMIT_SECTION_SYMBOLS | |
1773 | && (symp->bsym->flags & BSF_SECTION_SYM) != 0) | |
1cf7548e KR |
1774 | /* Note that S_IS_EXTERN and S_IS_LOCAL are not always |
1775 | opposites. Sometimes the former checks flags and the | |
1776 | latter examines the name... */ | |
1777 | || (!S_IS_EXTERN (symp) | |
1778 | && (S_IS_LOCAL (symp) || punt) | |
262b22cd | 1779 | && ! symp->sy_used_in_reloc)) |
43ca9aa6 | 1780 | { |
1cf7548e KR |
1781 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); |
1782 | /* After symbol_remove, symbol_next(symp) still returns | |
1783 | the one that came after it in the chain. So we don't | |
1784 | need to do any extra cleanup work here. */ | |
262b22cd | 1785 | |
262b22cd | 1786 | continue; |
43ca9aa6 | 1787 | } |
85051959 | 1788 | |
80aab579 ILT |
1789 | /* Make sure we really got a value for the symbol. */ |
1790 | if (! symp->sy_resolved) | |
1791 | { | |
1792 | as_bad ("can't resolve value for symbol \"%s\"", | |
1793 | S_GET_NAME (symp)); | |
1794 | symp->sy_resolved = 1; | |
1795 | } | |
1796 | ||
85051959 ILT |
1797 | /* Set the value into the BFD symbol. Up til now the value |
1798 | has only been kept in the gas symbolS struct. */ | |
1799 | symp->bsym->value = S_GET_VALUE (symp); | |
43ca9aa6 KR |
1800 | } |
1801 | } | |
1802 | ||
c151fd1e KR |
1803 | PROGRESS (1); |
1804 | ||
def66e24 DM |
1805 | /* Now do any format-specific adjustments to the symbol table, such |
1806 | as adding file symbols. */ | |
a043f579 ILT |
1807 | #ifdef tc_adjust_symtab |
1808 | tc_adjust_symtab (); | |
1809 | #endif | |
def66e24 DM |
1810 | #ifdef obj_adjust_symtab |
1811 | obj_adjust_symtab (); | |
1812 | #endif | |
1813 | ||
1814 | /* Now that all the sizes are known, and contents correct, we can | |
1815 | start writing to the file. */ | |
1816 | set_symtab (); | |
1817 | ||
1cf7548e KR |
1818 | /* If *_frob_file changes the symbol value at this point, it is |
1819 | responsible for moving the changed value into symp->bsym->value | |
1820 | as well. Hopefully all symbol value changing can be done in | |
1821 | *_frob_symbol. */ | |
c79e67a3 KR |
1822 | #ifdef tc_frob_file |
1823 | tc_frob_file (); | |
1824 | #endif | |
f2f7d044 ILT |
1825 | #ifdef obj_frob_file |
1826 | obj_frob_file (); | |
1827 | #endif | |
1828 | ||
8d6c34a1 KR |
1829 | bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); |
1830 | ||
5d0cd0b8 ILT |
1831 | #ifdef tc_frob_file_after_relocs |
1832 | tc_frob_file_after_relocs (); | |
1833 | #endif | |
1834 | #ifdef obj_frob_file_after_relocs | |
1835 | obj_frob_file_after_relocs (); | |
1836 | #endif | |
1837 | ||
43ca9aa6 | 1838 | bfd_map_over_sections (stdoutput, write_contents, (char *) 0); |
43ca9aa6 KR |
1839 | #endif /* BFD_ASSEMBLER */ |
1840 | } | |
d5364748 | 1841 | #endif /* ! BFD */ |
fecd2382 RP |
1842 | |
1843 | /* | |
1844 | * relax_segment() | |
1845 | * | |
1846 | * Now we have a segment, not a crowd of sub-segments, we can make fr_address | |
1847 | * values. | |
1848 | * | |
1849 | * Relax the frags. | |
1850 | * | |
1851 | * After this, all frags in this segment have addresses that are correct | |
1852 | * within the segment. Since segments live in different file addresses, | |
1853 | * these frag addresses may not be the same as final object-file addresses. | |
1854 | */ | |
45432836 | 1855 | |
a58374d7 | 1856 | #ifndef md_relax_frag |
793f9558 | 1857 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 | 1858 | |
d5364748 | 1859 | /* Subroutines of relax_segment. */ |
5d0cd0b8 | 1860 | static int |
43ca9aa6 KR |
1861 | is_dnrange (f1, f2) |
1862 | struct frag *f1; | |
1863 | struct frag *f2; | |
1864 | { | |
1865 | for (; f1; f1 = f1->fr_next) | |
1866 | if (f1->fr_next == f2) | |
1867 | return 1; | |
1868 | return 0; | |
1869 | } | |
1870 | ||
793f9558 | 1871 | #endif /* defined (TC_GENERIC_RELAX_TABLE) */ |
a58374d7 ILT |
1872 | #endif /* ! defined (md_relax_frag) */ |
1873 | ||
43ca9aa6 | 1874 | /* Relax_align. Advance location counter to next address that has 'alignment' |
d5364748 | 1875 | lowest order bits all 0s, return size of adjustment made. */ |
43ca9aa6 KR |
1876 | static relax_addressT |
1877 | relax_align (address, alignment) | |
1878 | register relax_addressT address; /* Address now. */ | |
d5364748 | 1879 | register int alignment; /* Alignment (binary). */ |
43ca9aa6 KR |
1880 | { |
1881 | relax_addressT mask; | |
1882 | relax_addressT new_address; | |
1883 | ||
1884 | mask = ~((~0) << alignment); | |
1885 | new_address = (address + mask) & (~mask); | |
d4083e29 | 1886 | #ifdef LINKER_RELAXING_SHRINKS_ONLY |
43ca9aa6 KR |
1887 | if (linkrelax) |
1888 | /* We must provide lots of padding, so the linker can discard it | |
1889 | when needed. The linker will not add extra space, ever. */ | |
1890 | new_address += (1 << alignment); | |
d4083e29 | 1891 | #endif |
43ca9aa6 KR |
1892 | return (new_address - address); |
1893 | } | |
45432836 | 1894 | |
5d0cd0b8 | 1895 | void |
6efd877d KR |
1896 | relax_segment (segment_frag_root, segment) |
1897 | struct frag *segment_frag_root; | |
43ca9aa6 | 1898 | segT segment; |
fecd2382 | 1899 | { |
6efd877d KR |
1900 | register struct frag *fragP; |
1901 | register relax_addressT address; | |
43ca9aa6 | 1902 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
6efd877d | 1903 | know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); |
45432836 | 1904 | #endif |
6efd877d KR |
1905 | /* In case md_estimate_size_before_relax() wants to make fixSs. */ |
1906 | subseg_change (segment, 0); | |
1907 | ||
7f2cb270 KR |
1908 | /* For each frag in segment: count and store (a 1st guess of) |
1909 | fr_address. */ | |
6efd877d KR |
1910 | address = 0; |
1911 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1912 | { | |
1913 | fragP->fr_address = address; | |
1914 | address += fragP->fr_fix; | |
1915 | ||
1916 | switch (fragP->fr_type) | |
1917 | { | |
1918 | case rs_fill: | |
1919 | address += fragP->fr_offset * fragP->fr_var; | |
1920 | break; | |
1921 | ||
1922 | case rs_align: | |
cd3b81bd | 1923 | case rs_align_code: |
98c6bbbe KR |
1924 | { |
1925 | int offset = relax_align (address, (int) fragP->fr_offset); | |
1926 | if (offset % fragP->fr_var != 0) | |
1927 | { | |
262b22cd ILT |
1928 | as_bad ("alignment padding (%d bytes) not a multiple of %ld", |
1929 | offset, (long) fragP->fr_var); | |
98c6bbbe KR |
1930 | offset -= (offset % fragP->fr_var); |
1931 | } | |
1932 | address += offset; | |
1933 | } | |
6efd877d KR |
1934 | break; |
1935 | ||
1936 | case rs_org: | |
cd3b81bd | 1937 | case rs_space: |
7f2cb270 | 1938 | /* Assume .org is nugatory. It will grow with 1st relax. */ |
6efd877d KR |
1939 | break; |
1940 | ||
1941 | case rs_machine_dependent: | |
1942 | address += md_estimate_size_before_relax (fragP, segment); | |
1943 | break; | |
1944 | ||
fecd2382 | 1945 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1946 | /* Broken words don't concern us yet */ |
1947 | case rs_broken_word: | |
1948 | break; | |
fecd2382 | 1949 | #endif |
6efd877d KR |
1950 | |
1951 | default: | |
1952 | BAD_CASE (fragP->fr_type); | |
1953 | break; | |
1954 | } /* switch(fr_type) */ | |
1955 | } /* for each frag in the segment */ | |
1956 | ||
7f2cb270 | 1957 | /* Do relax(). */ |
6efd877d | 1958 | { |
7f2cb270 | 1959 | long stretch; /* May be any size, 0 or negative. */ |
6efd877d KR |
1960 | /* Cumulative number of addresses we have */ |
1961 | /* relaxed this pass. */ | |
1962 | /* We may have relaxed more than one address. */ | |
7f2cb270 KR |
1963 | long stretched; /* Have we stretched on this pass? */ |
1964 | /* This is 'cuz stretch may be zero, when, in fact some piece of code | |
1965 | grew, and another shrank. If a branch instruction doesn't fit anymore, | |
1966 | we could be scrod. */ | |
6efd877d KR |
1967 | |
1968 | do | |
1969 | { | |
1970 | stretch = stretched = 0; | |
1971 | for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) | |
1972 | { | |
7f2cb270 KR |
1973 | long growth = 0; |
1974 | unsigned long was_address; | |
1975 | long offset; | |
1976 | symbolS *symbolP; | |
1977 | long target; | |
1978 | long after; | |
6efd877d KR |
1979 | |
1980 | was_address = fragP->fr_address; | |
1981 | address = fragP->fr_address += stretch; | |
1982 | symbolP = fragP->fr_symbol; | |
1983 | offset = fragP->fr_offset; | |
6efd877d KR |
1984 | |
1985 | switch (fragP->fr_type) | |
1986 | { | |
1987 | case rs_fill: /* .fill never relaxes. */ | |
1988 | growth = 0; | |
1989 | break; | |
1990 | ||
fecd2382 | 1991 | #ifndef WORKING_DOT_WORD |
6efd877d | 1992 | /* JF: This is RMS's idea. I do *NOT* want to be blamed |
7f2cb270 KR |
1993 | for it I do not want to write it. I do not want to have |
1994 | anything to do with it. This is not the proper way to | |
1995 | implement this misfeature. */ | |
6efd877d KR |
1996 | case rs_broken_word: |
1997 | { | |
1998 | struct broken_word *lie; | |
1999 | struct broken_word *untruth; | |
6efd877d KR |
2000 | |
2001 | /* Yes this is ugly (storing the broken_word pointer | |
7f2cb270 KR |
2002 | in the symbol slot). Still, this whole chunk of |
2003 | code is ugly, and I don't feel like doing anything | |
2004 | about it. Think of it as stubbornness in action. */ | |
6efd877d KR |
2005 | growth = 0; |
2006 | for (lie = (struct broken_word *) (fragP->fr_symbol); | |
2007 | lie && lie->dispfrag == fragP; | |
2008 | lie = lie->next_broken_word) | |
2009 | { | |
2010 | ||
2011 | if (lie->added) | |
2012 | continue; | |
2013 | ||
7f2cb270 KR |
2014 | offset = (lie->add->sy_frag->fr_address |
2015 | + S_GET_VALUE (lie->add) | |
2016 | + lie->addnum | |
2017 | - (lie->sub->sy_frag->fr_address | |
2018 | + S_GET_VALUE (lie->sub))); | |
6efd877d KR |
2019 | if (offset <= -32768 || offset >= 32767) |
2020 | { | |
def66e24 | 2021 | if (flag_warn_displacement) |
d5364748 KR |
2022 | { |
2023 | char buf[50]; | |
80aab579 | 2024 | sprint_value (buf, (addressT) lie->addnum); |
d5364748 KR |
2025 | as_warn (".word %s-%s+%s didn't fit", |
2026 | S_GET_NAME (lie->add), | |
2027 | S_GET_NAME (lie->sub), | |
2028 | buf); | |
2029 | } | |
6efd877d KR |
2030 | lie->added = 1; |
2031 | if (fragP->fr_subtype == 0) | |
2032 | { | |
2033 | fragP->fr_subtype++; | |
2034 | growth += md_short_jump_size; | |
2035 | } | |
7f2cb270 KR |
2036 | for (untruth = lie->next_broken_word; |
2037 | untruth && untruth->dispfrag == lie->dispfrag; | |
2038 | untruth = untruth->next_broken_word) | |
6efd877d KR |
2039 | if ((untruth->add->sy_frag == lie->add->sy_frag) |
2040 | && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) | |
2041 | { | |
2042 | untruth->added = 2; | |
2043 | untruth->use_jump = lie; | |
2044 | } | |
2045 | growth += md_long_jump_size; | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | break; | |
2050 | } /* case rs_broken_word */ | |
fecd2382 | 2051 | #endif |
6efd877d | 2052 | case rs_align: |
cd3b81bd | 2053 | case rs_align_code: |
43ca9aa6 KR |
2054 | growth = (relax_align ((relax_addressT) (address |
2055 | + fragP->fr_fix), | |
d5364748 | 2056 | (int) offset) |
43ca9aa6 KR |
2057 | - relax_align ((relax_addressT) (was_address |
2058 | + fragP->fr_fix), | |
d5364748 | 2059 | (int) offset)); |
6efd877d KR |
2060 | break; |
2061 | ||
2062 | case rs_org: | |
2063 | target = offset; | |
2064 | ||
2065 | if (symbolP) | |
2066 | { | |
43ca9aa6 KR |
2067 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
2068 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2069 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2070 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT) | |
2071 | || S_GET_SEGMENT (symbolP) == SEG_BSS); | |
6efd877d | 2072 | know (symbolP->sy_frag); |
43ca9aa6 KR |
2073 | know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) |
2074 | || (symbolP->sy_frag == &zero_address_frag)); | |
45432836 | 2075 | #endif |
6efd877d KR |
2076 | target += S_GET_VALUE (symbolP) |
2077 | + symbolP->sy_frag->fr_address; | |
2078 | } /* if we have a symbol */ | |
2079 | ||
2080 | know (fragP->fr_next); | |
2081 | after = fragP->fr_next->fr_address; | |
c151fd1e KR |
2082 | growth = target - after; |
2083 | if (growth < 0) | |
2084 | { | |
2085 | /* Growth may be negative, but variable part of frag | |
2086 | cannot have fewer than 0 chars. That is, we can't | |
2087 | .org backwards. */ | |
2088 | as_bad ("attempt to .org backwards ignored"); | |
2089 | growth = 0; | |
2090 | } | |
6efd877d KR |
2091 | |
2092 | growth -= stretch; /* This is an absolute growth factor */ | |
2093 | break; | |
2094 | ||
cd3b81bd KR |
2095 | case rs_space: |
2096 | if (symbolP) | |
2097 | { | |
2098 | growth = S_GET_VALUE (symbolP); | |
2099 | if (symbolP->sy_frag != &zero_address_frag) | |
2100 | as_bad (".space specifies non-absolute value"); | |
2101 | fragP->fr_symbol = 0; | |
2102 | if (growth < 0) | |
2103 | { | |
2104 | as_warn (".space or .fill with negative value, ignored"); | |
2105 | growth = 0; | |
2106 | } | |
2107 | } | |
2108 | else | |
2109 | growth = 0; | |
2110 | break; | |
2111 | ||
6efd877d | 2112 | case rs_machine_dependent: |
a58374d7 ILT |
2113 | #ifdef md_relax_frag |
2114 | growth = md_relax_frag (fragP, stretch); | |
2115 | #else | |
c151fd1e | 2116 | #ifdef TC_GENERIC_RELAX_TABLE |
a58374d7 ILT |
2117 | /* The default way to relax a frag is to look through |
2118 | md_relax_table. */ | |
6efd877d | 2119 | { |
7f2cb270 KR |
2120 | const relax_typeS *this_type; |
2121 | const relax_typeS *start_type; | |
2122 | relax_substateT next_state; | |
2123 | relax_substateT this_state; | |
80aab579 | 2124 | long aim; |
c151fd1e | 2125 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; |
6efd877d | 2126 | |
7f2cb270 | 2127 | this_state = fragP->fr_subtype; |
c151fd1e | 2128 | start_type = this_type = table + this_state; |
6efd877d KR |
2129 | target = offset; |
2130 | ||
2131 | if (symbolP) | |
2132 | { | |
80aab579 | 2133 | #ifndef DIFF_EXPR_OK |
43ca9aa6 KR |
2134 | #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) |
2135 | know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) | |
2136 | || (S_GET_SEGMENT (symbolP) == SEG_DATA) | |
2137 | || (S_GET_SEGMENT (symbolP) == SEG_BSS) | |
2138 | || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); | |
45432836 | 2139 | #endif |
6efd877d | 2140 | know (symbolP->sy_frag); |
80aab579 | 2141 | #endif |
43ca9aa6 KR |
2142 | know (!(S_GET_SEGMENT (symbolP) == absolute_section) |
2143 | || symbolP->sy_frag == &zero_address_frag); | |
6efd877d KR |
2144 | target += |
2145 | S_GET_VALUE (symbolP) | |
2146 | + symbolP->sy_frag->fr_address; | |
2147 | ||
2148 | /* If frag has yet to be reached on this pass, | |
7f2cb270 KR |
2149 | assume it will move by STRETCH just as we did. |
2150 | If this is not so, it will be because some frag | |
d5364748 KR |
2151 | between grows, and that will force another pass. |
2152 | ||
2153 | Beware zero-length frags. | |
2154 | ||
2155 | There should be a faster way to do this. */ | |
6efd877d KR |
2156 | |
2157 | if (symbolP->sy_frag->fr_address >= was_address | |
2158 | && is_dnrange (fragP, symbolP->sy_frag)) | |
2159 | { | |
2160 | target += stretch; | |
7f2cb270 | 2161 | } |
d5364748 | 2162 | } |
6efd877d KR |
2163 | |
2164 | aim = target - address - fragP->fr_fix; | |
d9d6f094 KR |
2165 | #ifdef TC_PCREL_ADJUST |
2166 | /* Currently only the ns32k family needs this */ | |
2167 | aim += TC_PCREL_ADJUST(fragP); | |
2168 | #else | |
2169 | /* This machine doesn't want to use pcrel_adjust. | |
2170 | In that case, pcrel_adjust should be zero. */ | |
2171 | assert (fragP->fr_pcrel_adjust == 0); | |
d5364748 | 2172 | #endif |
6efd877d KR |
2173 | |
2174 | if (aim < 0) | |
2175 | { | |
2176 | /* Look backwards. */ | |
2177 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2178 | if (aim >= this_type->rlx_backward) |
2179 | next_state = 0; | |
2180 | else | |
2181 | { | |
2182 | /* Grow to next state. */ | |
2183 | this_state = next_state; | |
c151fd1e | 2184 | this_type = table + this_state; |
7f2cb270 KR |
2185 | next_state = this_type->rlx_more; |
2186 | } | |
6efd877d KR |
2187 | } |
2188 | else | |
2189 | { | |
a39116f1 | 2190 | #ifdef M68K_AIM_KLUDGE |
6efd877d | 2191 | M68K_AIM_KLUDGE (aim, this_state, this_type); |
fecd2382 | 2192 | #endif |
6efd877d KR |
2193 | /* Look forwards. */ |
2194 | for (next_state = this_type->rlx_more; next_state;) | |
7f2cb270 KR |
2195 | if (aim <= this_type->rlx_forward) |
2196 | next_state = 0; | |
2197 | else | |
2198 | { | |
2199 | /* Grow to next state. */ | |
2200 | this_state = next_state; | |
c151fd1e | 2201 | this_type = table + this_state; |
7f2cb270 KR |
2202 | next_state = this_type->rlx_more; |
2203 | } | |
6efd877d KR |
2204 | } |
2205 | ||
7f2cb270 KR |
2206 | growth = this_type->rlx_length - start_type->rlx_length; |
2207 | if (growth != 0) | |
6efd877d | 2208 | fragP->fr_subtype = this_state; |
7f2cb270 | 2209 | } |
c151fd1e | 2210 | #endif /* TC_GENERIC_RELAX_TABLE */ |
a58374d7 | 2211 | #endif |
7f2cb270 | 2212 | break; |
6efd877d KR |
2213 | |
2214 | default: | |
2215 | BAD_CASE (fragP->fr_type); | |
2216 | break; | |
2217 | } | |
2218 | if (growth) | |
2219 | { | |
2220 | stretch += growth; | |
2221 | stretched++; | |
2222 | } | |
2223 | } /* For each frag in the segment. */ | |
2224 | } | |
2225 | while (stretched); /* Until nothing further to relax. */ | |
2226 | } /* do_relax */ | |
2227 | ||
2228 | /* | |
7f2cb270 KR |
2229 | * We now have valid fr_address'es for each frag. |
2230 | */ | |
6efd877d KR |
2231 | |
2232 | /* | |
7f2cb270 KR |
2233 | * All fr_address's are correct, relative to their own segment. |
2234 | * We have made all the fixS we will ever make. | |
2235 | */ | |
6efd877d | 2236 | } /* relax_segment() */ |
fecd2382 | 2237 | |
3f81f3cf | 2238 | #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) |
80aab579 | 2239 | |
d9d6f094 KR |
2240 | #ifndef TC_RELOC_RTSYM_LOC_FIXUP |
2241 | #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1) | |
2242 | #endif | |
2243 | ||
fecd2382 | 2244 | /* fixup_segment() |
6efd877d | 2245 | |
fecd2382 RP |
2246 | Go through all the fixS's in a segment and see which ones can be |
2247 | handled now. (These consist of fixS where we have since discovered | |
2248 | the value of a symbol, or the address of the frag involved.) | |
2249 | For each one, call md_apply_fix to put the fix into the frag data. | |
6efd877d | 2250 | |
fecd2382 RP |
2251 | Result is a count of how many relocation structs will be needed to |
2252 | handle the remaining fixS's that we couldn't completely handle here. | |
2253 | These will be output later by emit_relocations(). */ | |
2254 | ||
09952cd9 | 2255 | static long |
6efd877d | 2256 | fixup_segment (fixP, this_segment_type) |
09952cd9 | 2257 | register fixS *fixP; |
6efd877d | 2258 | segT this_segment_type; /* N_TYPE bits for segment. */ |
fecd2382 | 2259 | { |
f5c32424 KR |
2260 | long seg_reloc_count = 0; |
2261 | symbolS *add_symbolP; | |
2262 | symbolS *sub_symbolP; | |
d5364748 | 2263 | valueT add_number; |
f5c32424 KR |
2264 | int size; |
2265 | char *place; | |
2266 | long where; | |
a55774a1 | 2267 | int pcrel, plt; |
f5c32424 KR |
2268 | fragS *fragP; |
2269 | segT add_symbol_segment = absolute_section; | |
5d0cd0b8 | 2270 | |
f5c32424 KR |
2271 | /* If the linker is doing the relaxing, we must not do any fixups. |
2272 | ||
2273 | Well, strictly speaking that's not true -- we could do any that are | |
2274 | PC-relative and don't cross regions that could change size. And for the | |
2275 | i960 (the only machine for which we've got a relaxing linker right now), | |
2276 | we might be able to turn callx/callj into bal anyways in cases where we | |
2277 | know the maximum displacement. */ | |
6efd877d | 2278 | if (linkrelax) |
f5c32424 KR |
2279 | { |
2280 | for (; fixP; fixP = fixP->fx_next) | |
2281 | seg_reloc_count++; | |
2282 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); | |
2283 | return seg_reloc_count; | |
2284 | } | |
6efd877d | 2285 | |
f5c32424 KR |
2286 | for (; fixP; fixP = fixP->fx_next) |
2287 | { | |
a55774a1 KR |
2288 | #ifdef DEBUG5 |
2289 | fprintf (stderr, "\nprocessing fixup:\n"); | |
2290 | print_fixup (fixP); | |
2291 | #endif | |
2292 | ||
f5c32424 KR |
2293 | fragP = fixP->fx_frag; |
2294 | know (fragP); | |
2295 | where = fixP->fx_where; | |
2296 | place = fragP->fr_literal + where; | |
2297 | size = fixP->fx_size; | |
2298 | add_symbolP = fixP->fx_addsy; | |
2299 | #ifdef TC_VALIDATE_FIX | |
2300 | TC_VALIDATE_FIX (fixP, this_segment_type, skip); | |
fecd2382 | 2301 | #endif |
f5c32424 KR |
2302 | sub_symbolP = fixP->fx_subsy; |
2303 | add_number = fixP->fx_offset; | |
2304 | pcrel = fixP->fx_pcrel; | |
a55774a1 KR |
2305 | plt = fixP->fx_plt; |
2306 | ||
e120d9fb ILT |
2307 | if (add_symbolP != NULL |
2308 | && add_symbolP->sy_mri_common) | |
1356d77d ILT |
2309 | { |
2310 | know (add_symbolP->sy_value.X_op == O_symbol); | |
2311 | add_number += S_GET_VALUE (add_symbolP); | |
2312 | fixP->fx_offset = add_number; | |
2313 | add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; | |
2314 | } | |
2315 | ||
f5c32424 KR |
2316 | if (add_symbolP) |
2317 | add_symbol_segment = S_GET_SEGMENT (add_symbolP); | |
5d0cd0b8 | 2318 | |
f5c32424 KR |
2319 | if (sub_symbolP) |
2320 | { | |
f7da4a99 | 2321 | resolve_symbol_value (sub_symbolP); |
96fe71e1 | 2322 | if (add_symbolP == NULL || add_symbol_segment == absolute_section) |
f5c32424 | 2323 | { |
96fe71e1 MM |
2324 | if (add_symbolP != NULL) |
2325 | { | |
2326 | add_number += S_GET_VALUE (add_symbolP); | |
2327 | add_symbolP = NULL; | |
2328 | fixP->fx_addsy = NULL; | |
2329 | } | |
2330 | ||
2331 | /* It's just -sym */ | |
f5c32424 | 2332 | if (S_GET_SEGMENT (sub_symbolP) == absolute_section) |
96fe71e1 MM |
2333 | { |
2334 | add_number -= S_GET_VALUE (sub_symbolP); | |
2335 | fixP->fx_subsy = NULL; | |
2336 | } | |
f5c32424 KR |
2337 | else if (pcrel |
2338 | && S_GET_SEGMENT (sub_symbolP) == this_segment_type) | |
2339 | { | |
2340 | /* Should try converting to a constant. */ | |
2341 | goto bad_sub_reloc; | |
2342 | } | |
2343 | else | |
2344 | bad_sub_reloc: | |
741f4d66 KR |
2345 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2346 | "Negative of non-absolute symbol %s", | |
2347 | S_GET_NAME (sub_symbolP)); | |
f5c32424 | 2348 | } |
96fe71e1 MM |
2349 | else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment |
2350 | && SEG_NORMAL (add_symbol_segment)) | |
f5c32424 KR |
2351 | { |
2352 | /* Difference of 2 symbols from same segment. | |
2353 | Can't make difference of 2 undefineds: 'value' means | |
2354 | something different for N_UNDF. */ | |
fecd2382 | 2355 | #ifdef TC_I960 |
f5c32424 KR |
2356 | /* Makes no sense to use the difference of 2 arbitrary symbols |
2357 | as the target of a call instruction. */ | |
2358 | if (fixP->fx_tcbit) | |
741f4d66 KR |
2359 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2360 | "callj to difference of 2 symbols"); | |
6efd877d | 2361 | #endif /* TC_I960 */ |
f5c32424 KR |
2362 | add_number += S_GET_VALUE (add_symbolP) - |
2363 | S_GET_VALUE (sub_symbolP); | |
6efd877d | 2364 | |
f5c32424 | 2365 | add_symbolP = NULL; |
c151fd1e | 2366 | pcrel = 0; /* No further pcrel processing. */ |
335d35c8 | 2367 | |
f5c32424 KR |
2368 | /* Let the target machine make the final determination |
2369 | as to whether or not a relocation will be needed to | |
2370 | handle this fixup. */ | |
96fe71e1 | 2371 | if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) |
98c6bbbe | 2372 | { |
c151fd1e | 2373 | fixP->fx_pcrel = 0; |
98c6bbbe | 2374 | fixP->fx_addsy = NULL; |
96fe71e1 | 2375 | fixP->fx_subsy = NULL; |
98c6bbbe | 2376 | } |
f5c32424 KR |
2377 | } |
2378 | else | |
2379 | { | |
2380 | /* Different segments in subtraction. */ | |
2381 | know (!(S_IS_EXTERNAL (sub_symbolP) | |
2382 | && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); | |
2383 | ||
2384 | if ((S_GET_SEGMENT (sub_symbolP) == absolute_section)) | |
2385 | add_number -= S_GET_VALUE (sub_symbolP); | |
6efd877d | 2386 | |
80aab579 | 2387 | #ifdef DIFF_EXPR_OK |
f5c32424 KR |
2388 | else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type |
2389 | #if 0 /* Do this even if it's already described as pc-relative. For example, | |
2390 | on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a | |
2391 | pc-relative mode. */ | |
2392 | && pcrel | |
0f894895 | 2393 | #endif |
f5c32424 KR |
2394 | ) |
2395 | { | |
2396 | /* Make it pc-relative. */ | |
96fe71e1 | 2397 | add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) |
f5c32424 KR |
2398 | - S_GET_VALUE (sub_symbolP)); |
2399 | pcrel = 1; | |
2400 | fixP->fx_pcrel = 1; | |
2401 | sub_symbolP = 0; | |
2402 | fixP->fx_subsy = 0; | |
2403 | } | |
98c6bbbe | 2404 | #endif |
d4083e29 KR |
2405 | #ifdef UNDEFINED_DIFFERENCE_OK |
2406 | /* The PA needs this for PIC code generation. We basically | |
2407 | don't want to do anything if we have the difference of two | |
2408 | symbols at this point. */ | |
2409 | else if (1) | |
2410 | { | |
2411 | /* Leave it alone. */ | |
2412 | } | |
2413 | #endif | |
98c6bbbe KR |
2414 | #ifdef BFD_ASSEMBLER |
2415 | else if (fixP->fx_r_type == BFD_RELOC_GPREL32 | |
2416 | || fixP->fx_r_type == BFD_RELOC_GPREL16) | |
2417 | { | |
2418 | /* Leave it alone. */ | |
2419 | } | |
80aab579 | 2420 | #endif |
f5c32424 KR |
2421 | else |
2422 | { | |
2423 | char buf[50]; | |
2424 | sprint_value (buf, fragP->fr_address + where); | |
741f4d66 KR |
2425 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2426 | "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", | |
2427 | segment_name (S_GET_SEGMENT (sub_symbolP)), | |
2428 | S_GET_NAME (sub_symbolP), buf); | |
f5c32424 KR |
2429 | } |
2430 | } | |
2431 | } | |
6efd877d | 2432 | |
f5c32424 KR |
2433 | if (add_symbolP) |
2434 | { | |
a55774a1 | 2435 | if (add_symbol_segment == this_segment_type && pcrel && !plt |
5767cfb7 | 2436 | && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) |
f5c32424 KR |
2437 | { |
2438 | /* | |
2439 | * This fixup was made when the symbol's segment was | |
2440 | * SEG_UNKNOWN, but it is now in the local segment. | |
2441 | * So we know how to do the address without relocation. | |
2442 | */ | |
fecd2382 | 2443 | #ifdef TC_I960 |
f5c32424 KR |
2444 | /* reloc_callj() may replace a 'call' with a 'calls' or a |
2445 | 'bal', in which cases it modifies *fixP as appropriate. | |
2446 | In the case of a 'calls', no further work is required, | |
2447 | and *fixP has been set up to make the rest of the code | |
2448 | below a no-op. */ | |
2449 | reloc_callj (fixP); | |
fecd2382 | 2450 | #endif /* TC_I960 */ |
6efd877d | 2451 | |
f5c32424 | 2452 | add_number += S_GET_VALUE (add_symbolP); |
96fe71e1 | 2453 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 | 2454 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ |
5d0cd0b8 | 2455 | |
f5c32424 KR |
2456 | /* Let the target machine make the final determination |
2457 | as to whether or not a relocation will be needed to | |
2458 | handle this fixup. */ | |
2459 | if (!TC_FORCE_RELOCATION (fixP)) | |
98c6bbbe KR |
2460 | { |
2461 | fixP->fx_pcrel = 0; | |
2462 | fixP->fx_addsy = NULL; | |
2463 | } | |
f5c32424 KR |
2464 | } |
2465 | else | |
2466 | { | |
00a69b89 ILT |
2467 | if (add_symbol_segment == absolute_section |
2468 | && ! pcrel) | |
f5c32424 | 2469 | { |
fecd2382 | 2470 | #ifdef TC_I960 |
f5c32424 KR |
2471 | /* See comment about reloc_callj() above. */ |
2472 | reloc_callj (fixP); | |
fecd2382 | 2473 | #endif /* TC_I960 */ |
f5c32424 KR |
2474 | add_number += S_GET_VALUE (add_symbolP); |
2475 | ||
2476 | /* Let the target machine make the final determination | |
2477 | as to whether or not a relocation will be needed to | |
2478 | handle this fixup. */ | |
5d0cd0b8 | 2479 | |
f00f5ecd | 2480 | if (!TC_FORCE_RELOCATION (fixP)) |
e67a0640 KR |
2481 | { |
2482 | fixP->fx_addsy = NULL; | |
2483 | add_symbolP = NULL; | |
2484 | } | |
f5c32424 KR |
2485 | } |
2486 | else if (add_symbol_segment == undefined_section | |
43ca9aa6 | 2487 | #ifdef BFD_ASSEMBLER |
f5c32424 | 2488 | || bfd_is_com_section (add_symbol_segment) |
43ca9aa6 | 2489 | #endif |
f5c32424 KR |
2490 | ) |
2491 | { | |
fecd2382 | 2492 | #ifdef TC_I960 |
f5c32424 KR |
2493 | if ((int) fixP->fx_bit_fixP == 13) |
2494 | { | |
2495 | /* This is a COBR instruction. They have only a | |
2496 | * 13-bit displacement and are only to be used | |
2497 | * for local branches: flag as error, don't generate | |
2498 | * relocation. | |
2499 | */ | |
741f4d66 KR |
2500 | as_bad_where (fixP->fx_file, fixP->fx_line, |
2501 | "can't use COBR format with external label"); | |
98c6bbbe KR |
2502 | fixP->fx_addsy = NULL; |
2503 | fixP->fx_done = 1; | |
f5c32424 KR |
2504 | continue; |
2505 | } /* COBR */ | |
fecd2382 | 2506 | #endif /* TC_I960 */ |
5d0cd0b8 | 2507 | |
fecd2382 | 2508 | #ifdef OBJ_COFF |
c593cf41 | 2509 | #ifdef TE_I386AIX |
f5c32424 KR |
2510 | if (S_IS_COMMON (add_symbolP)) |
2511 | add_number += S_GET_VALUE (add_symbolP); | |
c593cf41 | 2512 | #endif /* TE_I386AIX */ |
fecd2382 | 2513 | #endif /* OBJ_COFF */ |
f5c32424 KR |
2514 | ++seg_reloc_count; |
2515 | } | |
2516 | else | |
2517 | { | |
2518 | seg_reloc_count++; | |
00a69b89 ILT |
2519 | /* start-sanitize-v850 */ |
2520 | #if !(defined (TC_V850) && defined (OBJ_ELF)) | |
2521 | /* end-sanitize-v850 */ | |
a043f579 | 2522 | #if !(defined (TC_M68K) && defined (OBJ_ELF)) |
a55774a1 | 2523 | #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) |
f5c32424 | 2524 | add_number += S_GET_VALUE (add_symbolP); |
00a69b89 ILT |
2525 | /* start-sanitize-v850 */ |
2526 | #endif | |
2527 | /* end-sanitize-v850 */ | |
a043f579 | 2528 | #endif |
a55774a1 | 2529 | #endif |
f5c32424 KR |
2530 | } |
2531 | } | |
2532 | } | |
6efd877d | 2533 | |
f5c32424 KR |
2534 | if (pcrel) |
2535 | { | |
96fe71e1 | 2536 | add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); |
f5c32424 KR |
2537 | if (add_symbolP == 0) |
2538 | { | |
1cf7548e | 2539 | #ifndef BFD_ASSEMBLER |
f5c32424 | 2540 | fixP->fx_addsy = &abs_symbol; |
1cf7548e KR |
2541 | #else |
2542 | fixP->fx_addsy = section_symbol (absolute_section); | |
2543 | #endif | |
2544 | fixP->fx_addsy->sy_used_in_reloc = 1; | |
f5c32424 | 2545 | ++seg_reloc_count; |
98c6bbbe KR |
2546 | } |
2547 | } | |
6efd877d | 2548 | |
c7d7eed0 | 2549 | if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) |
f5c32424 KR |
2550 | { |
2551 | valueT mask = 0; | |
df44a852 | 2552 | if (size < sizeof (mask)) |
f5c32424 | 2553 | { |
df44a852 KR |
2554 | /* set all bits to one */ |
2555 | mask--; | |
2556 | /* Technically, combining these produces an undefined result | |
2557 | if size is sizeof (valueT), though I think these two | |
2558 | half-way operations should both be defined. And the | |
2559 | compiler should be able to combine them if it's valid on | |
2560 | the host architecture. */ | |
2561 | mask <<= size * 4; | |
2562 | mask <<= size * 4; | |
2563 | if ((add_number & mask) != 0 | |
2564 | && (add_number & mask) != mask) | |
2565 | { | |
2566 | char buf[50], buf2[50]; | |
2567 | sprint_value (buf, fragP->fr_address + where); | |
2568 | if (add_number > 1000) | |
2569 | sprint_value (buf2, add_number); | |
2570 | else | |
2571 | sprintf (buf2, "%ld", (long) add_number); | |
2572 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2573 | "Value of %s too large for field of %d bytes at %s", | |
2574 | buf2, size, buf); | |
2575 | } /* generic error checking */ | |
2576 | } | |
f5c32424 KR |
2577 | #ifdef WARN_SIGNED_OVERFLOW_WORD |
2578 | /* Warn if a .word value is too large when treated as a signed | |
2579 | number. We already know it is not too negative. This is to | |
2580 | catch over-large switches generated by gcc on the 68k. */ | |
def66e24 | 2581 | if (!flag_signed_overflow_ok |
f5c32424 KR |
2582 | && size == 2 |
2583 | && add_number > 0x7fff) | |
2584 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
2585 | "Signed .word overflow; switch may be too large; %ld at 0x%lx", | |
2586 | (long) add_number, | |
2587 | (unsigned long) (fragP->fr_address + where)); | |
6efd877d | 2588 | #endif |
f5c32424 | 2589 | } /* not a bit fix */ |
6efd877d | 2590 | |
98c6bbbe KR |
2591 | if (!fixP->fx_done) |
2592 | { | |
3f81f3cf MM |
2593 | #ifdef MD_APPLY_FIX3 |
2594 | md_apply_fix3 (fixP, &add_number, this_segment_type); | |
2595 | #else | |
43ca9aa6 | 2596 | #ifdef BFD_ASSEMBLER |
98c6bbbe | 2597 | md_apply_fix (fixP, &add_number); |
43ca9aa6 | 2598 | #else |
98c6bbbe KR |
2599 | md_apply_fix (fixP, add_number); |
2600 | #endif | |
3f81f3cf | 2601 | #endif |
98c6bbbe KR |
2602 | |
2603 | #ifndef TC_HANDLES_FX_DONE | |
2604 | /* If the tc-* files haven't been converted, assume it's handling | |
2605 | it the old way, where a null fx_addsy means that the fix has | |
2606 | been applied completely, and no further work is needed. */ | |
2607 | if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) | |
2608 | fixP->fx_done = 1; | |
43ca9aa6 | 2609 | #endif |
98c6bbbe KR |
2610 | } |
2611 | #ifdef TC_VALIDATE_FIX | |
a55774a1 KR |
2612 | skip: ; |
2613 | #endif | |
2614 | #ifdef DEBUG5 | |
2615 | fprintf (stderr, "result:\n"); | |
2616 | print_fixup (fixP); | |
98c6bbbe | 2617 | #endif |
f5c32424 | 2618 | } /* For each fixS in this segment. */ |
6efd877d | 2619 | |
f5c32424 KR |
2620 | TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); |
2621 | return seg_reloc_count; | |
2622 | } | |
6efd877d | 2623 | |
3f81f3cf | 2624 | #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */ |
6efd877d | 2625 | |
f5c32424 KR |
2626 | void |
2627 | number_to_chars_bigendian (buf, val, n) | |
2628 | char *buf; | |
2629 | valueT val; | |
2630 | int n; | |
2631 | { | |
2632 | if (n > sizeof (val)|| n <= 0) | |
2633 | abort (); | |
2634 | while (n--) | |
2635 | { | |
2636 | buf[n] = val & 0xff; | |
2637 | val >>= 8; | |
2638 | } | |
d5364748 | 2639 | } |
fecd2382 | 2640 | |
f5c32424 KR |
2641 | void |
2642 | number_to_chars_littleendian (buf, val, n) | |
2643 | char *buf; | |
2644 | valueT val; | |
2645 | int n; | |
2646 | { | |
2647 | if (n > sizeof (val) || n <= 0) | |
2648 | abort (); | |
2649 | while (n--) | |
2650 | { | |
2651 | *buf++ = val & 0xff; | |
2652 | val >>= 8; | |
2653 | } | |
2654 | } | |
80aab579 | 2655 | |
a043f579 ILT |
2656 | void |
2657 | write_print_statistics (file) | |
2658 | FILE *file; | |
2659 | { | |
2660 | fprintf (stderr, "fixups: %d\n", n_fixups); | |
2661 | } | |
2662 | ||
4acf8c78 KR |
2663 | /* for debugging */ |
2664 | extern int indent_level; | |
b04bc423 | 2665 | extern void print_symbol_value_1 (); |
4acf8c78 KR |
2666 | |
2667 | void | |
2668 | print_fixup (fixp) | |
2669 | fixS *fixp; | |
2670 | { | |
2671 | indent_level = 1; | |
a55774a1 | 2672 | fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line); |
4acf8c78 KR |
2673 | if (fixp->fx_pcrel) |
2674 | fprintf (stderr, " pcrel"); | |
2675 | if (fixp->fx_pcrel_adjust) | |
2676 | fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust); | |
2677 | if (fixp->fx_im_disp) | |
2678 | { | |
2679 | #ifdef TC_NS32K | |
2680 | fprintf (stderr, " im_disp=%d", fixp->fx_im_disp); | |
2681 | #else | |
2682 | fprintf (stderr, " im_disp"); | |
2683 | #endif | |
2684 | } | |
2685 | if (fixp->fx_tcbit) | |
2686 | fprintf (stderr, " tcbit"); | |
2687 | if (fixp->fx_done) | |
2688 | fprintf (stderr, " done"); | |
a55774a1 KR |
2689 | fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx", |
2690 | fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where, | |
2691 | (long) fixp->fx_offset, (long) fixp->fx_addnumber); | |
9dc6c00f KR |
2692 | #ifdef BFD_ASSEMBLER |
2693 | fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type), | |
2694 | fixp->fx_r_type); | |
2695 | #else | |
a55774a1 | 2696 | #ifdef NEED_FX_R_TYPE |
9dc6c00f | 2697 | fprintf (stderr, " r_type=%d", fixp->fx_r_type); |
a55774a1 | 2698 | #endif |
9dc6c00f KR |
2699 | #endif |
2700 | if (fixp->fx_addsy) | |
2701 | { | |
a55774a1 | 2702 | fprintf (stderr, "\n +<"); |
9dc6c00f KR |
2703 | print_symbol_value_1 (stderr, fixp->fx_addsy); |
2704 | fprintf (stderr, ">"); | |
2705 | } | |
a55774a1 KR |
2706 | if (fixp->fx_subsy) |
2707 | { | |
2708 | fprintf (stderr, "\n -<"); | |
2709 | print_symbol_value_1 (stderr, fixp->fx_subsy); | |
2710 | fprintf (stderr, ">"); | |
2711 | } | |
9dc6c00f | 2712 | fprintf (stderr, "\n"); |
4acf8c78 KR |
2713 | } |
2714 | ||
fecd2382 | 2715 | /* end of write.c */ |