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f714e310 | 1 | /* coff object file format with bfd |
23de7ff6 SC |
2 | Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc. |
3 | ||
4 | This file is part of GAS. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* | |
21 | ||
22 | How does this releate to the rest of GAS ? | |
23 | ||
24 | Well, all the other files in gas are more or less a black box. It | |
f714e310 | 25 | takes care of opening files, parsing command lines, stripping blanks |
23de7ff6 SC |
26 | etc etc. This module gets a chance to register what it wants to do by |
27 | saying that it is interested in various pseduo ops. The other big | |
28 | change is write_object_file. This runs through all the data | |
29 | structures that gas builds, and outputs the file in the format of our | |
30 | choice. | |
31 | ||
23de7ff6 | 32 | Hacked for BFDness by steve chamberlain |
f714e310 SC |
33 | |
34 | Note that this is the first implementation using BFD for coff, and | |
35 | this is a pretty special case too - it only works at the moment for | |
36 | the H8. Which *can't* do any relaxing during assembly - because the | |
37 | linker has to have all the reloc info for fancy stuff later on. | |
38 | ||
39 | When another machine is supported, relaxing will have to go back in. | |
40 | ||
23de7ff6 SC |
41 | sac@cygnus.com |
42 | */ | |
43 | ||
44 | #include "as.h" | |
45 | #include "obstack.h" | |
46 | #include "subsegs.h" | |
47 | #include "frags.h" | |
48 | ||
49 | ||
50 | ||
23de7ff6 SC |
51 | /* This vector is used to turn an internal segment into a section # |
52 | suitable for insertion into a coff symbol table | |
f714e310 | 53 | */ |
23de7ff6 SC |
54 | |
55 | const short seg_N_TYPE[] = { /* in: segT out: N_TYPE bits */ | |
56 | C_ABS_SECTION, | |
57 | 1, | |
58 | 2, | |
59 | 3, | |
60 | 4, | |
61 | 5, | |
62 | 6, | |
63 | 7, | |
64 | 8, | |
65 | 9, | |
66 | 10, | |
67 | C_UNDEF_SECTION, /* SEG_UNKNOWN */ | |
68 | C_UNDEF_SECTION, /* SEG_ABSENT */ | |
69 | C_UNDEF_SECTION, /* SEG_PASS1 */ | |
70 | C_UNDEF_SECTION, /* SEG_GOOF */ | |
71 | C_UNDEF_SECTION, /* SEG_BIG */ | |
72 | C_UNDEF_SECTION, /* SEG_DIFFERENCE */ | |
73 | C_DEBUG_SECTION, /* SEG_DEBUG */ | |
74 | C_NTV_SECTION, /* SEG_NTV */ | |
75 | C_PTV_SECTION, /* SEG_PTV */ | |
76 | C_REGISTER_SECTION, /* SEG_REGISTER */ | |
77 | }; | |
78 | ||
f714e310 | 79 | |
23de7ff6 SC |
80 | int function_lineoff = -1; /* Offset in line#s where the last function |
81 | started (the odd entry for line #0) */ | |
82 | ||
83 | int our_lineno_number = 0; /* we use this to build pointers from .bf's | |
84 | into the linetable. It should match | |
85 | exactly the values that are later | |
86 | assigned in text_lineno_number by | |
87 | write.c. */ | |
88 | ||
89 | int text_lineno_number = 0; | |
90 | ||
91 | /* Add 4 to the real value to get the index and compensate the | |
92 | negatives. This vector is used by S_GET_SEGMENT to turn a coff | |
93 | section number into a segment number | |
94 | */ | |
95 | static symbolS *previous_file_symbol = NULL; | |
96 | void c_symbol_merge(); | |
97 | ||
98 | symbolS *c_section_symbol(); | |
99 | bfd *abfd; | |
100 | void EXFUN(bfd_as_write_hook,(struct internal_filehdr *, | |
101 | bfd *abfd)); | |
102 | ||
63c92fcd SC |
103 | static void EXFUN(fixup_segment,(fixS * fixP, |
104 | segT this_segment_type)); | |
105 | ||
23de7ff6 SC |
106 | static void EXFUN(fill_section,(bfd *abfd , |
107 | struct internal_filehdr *f, unsigned | |
108 | long *)); | |
109 | ||
110 | ||
111 | char *EXFUN(s_get_name,(symbolS *s)); | |
112 | static symbolS *EXFUN(tag_find_or_make,(char *name)); | |
113 | static symbolS* EXFUN(tag_find,(char *name)); | |
114 | ||
115 | ||
116 | static void EXFUN(w_symbols,( | |
117 | bfd *abfd , | |
118 | char **where , | |
119 | symbolS *symbol_rootP)); | |
120 | ||
121 | ||
122 | ||
123 | static void EXFUN( obj_coff_def,(int what)); | |
124 | static void EXFUN( obj_coff_lcomm,(void)); | |
125 | static void EXFUN( obj_coff_dim,(void)); | |
126 | static void EXFUN( obj_coff_text,(void)); | |
127 | static void EXFUN( obj_coff_data,(void)); | |
128 | static void EXFUN( obj_coff_endef,(void)); | |
129 | static void EXFUN( obj_coff_line,(void)); | |
130 | static void EXFUN( obj_coff_ln,(void)); | |
131 | static void EXFUN( obj_coff_scl,(void)); | |
132 | static void EXFUN( obj_coff_size,(void)); | |
133 | static void EXFUN( obj_coff_stab,(int what)); | |
134 | static void EXFUN( obj_coff_tag,(void)); | |
135 | static void EXFUN( obj_coff_type,(void)); | |
136 | static void EXFUN( obj_coff_val,(void)); | |
137 | static void EXFUN( obj_coff_section,(void)); | |
138 | static void EXFUN( tag_init,(void)); | |
139 | static void EXFUN( tag_insert,(char *name, symbolS *symbolP)); | |
140 | ||
141 | ||
142 | static struct hash_control *tag_hash; | |
143 | static symbolS *def_symbol_in_progress = NULL; | |
144 | ||
145 | const pseudo_typeS obj_pseudo_table[] = { | |
146 | { "def", obj_coff_def, 0 }, | |
147 | { "dim", obj_coff_dim, 0 }, | |
148 | { "endef", obj_coff_endef, 0 }, | |
149 | { "line", obj_coff_line, 0 }, | |
150 | { "ln", obj_coff_ln, 0 }, | |
151 | { "scl", obj_coff_scl, 0 }, | |
152 | { "size", obj_coff_size, 0 }, | |
153 | { "tag", obj_coff_tag, 0 }, | |
154 | { "type", obj_coff_type, 0 }, | |
155 | { "val", obj_coff_val, 0 }, | |
156 | { "section", obj_coff_section, 0 }, | |
157 | { "text", obj_coff_text, 0 }, | |
158 | { "data", obj_coff_data, 0 }, | |
159 | ||
160 | { "ident", s_ignore, 0 }, /* we don't yet handle this. */ | |
161 | { "ABORT", s_abort, 0 }, | |
162 | { "lcomm", obj_coff_lcomm, 0}, | |
163 | { NULL} /* end sentinel */ | |
164 | }; /* obj_pseudo_table */ | |
165 | ||
166 | ||
167 | ||
168 | /* Section stuff | |
169 | ||
170 | We allow more than just the standard 3 sections, infact, we allow | |
171 | 10 sections, (though the usual three have to be there). | |
172 | ||
173 | This structure performs the mappings for us: | |
174 | ||
175 | */ | |
176 | ||
177 | /* OBS stuff | |
178 | static struct internal_scnhdr bss_section_header; | |
179 | struct internal_scnhdr data_section_header; | |
180 | struct internal_scnhdr text_section_header; | |
181 | ||
182 | const segT N_TYPE_seg [32] = | |
183 | { | |
184 | ||
185 | }; | |
186 | ||
187 | */ | |
188 | ||
189 | #define N_SEG 32 | |
190 | typedef struct | |
191 | { | |
192 | segT seg_t; | |
193 | int i; | |
194 | } seg_info_type; | |
195 | ||
196 | seg_info_type seg_info_off_by_4[N_SEG] = | |
197 | { | |
198 | {SEG_PTV, }, | |
199 | {SEG_NTV, }, | |
200 | {SEG_DEBUG, }, | |
201 | {SEG_ABSOLUTE, }, | |
202 | {SEG_UNKNOWN, }, | |
203 | {SEG_E0}, | |
204 | {SEG_E1}, | |
205 | {SEG_E2}, | |
206 | {SEG_E3}, | |
207 | {SEG_E4}, | |
208 | {SEG_E5}, | |
209 | {SEG_E6}, | |
210 | {SEG_E7}, | |
211 | {SEG_E8}, | |
212 | {SEG_E9}, | |
63c92fcd SC |
213 | {15}, |
214 | {16}, | |
215 | {17}, | |
216 | {18}, | |
217 | {19}, | |
218 | {20}, | |
219 | {21}, | |
220 | {22}, | |
221 | {23}, | |
222 | {SEG_REGISTER},0x1111,0x2222,0x3333,0x4444 | |
23de7ff6 SC |
223 | |
224 | }; | |
225 | ||
226 | #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4]) | |
227 | #define SEG_INFO_FROM_SEG_NUMBER(x) (seg_info_off_by_4[(x)]) | |
228 | ||
229 | ||
230 | static relax_addressT | |
231 | DEFUN(relax_align,(address, alignment), | |
232 | register relax_addressT address AND | |
233 | register long alignment ) | |
234 | { | |
235 | relax_addressT mask; | |
236 | relax_addressT new_address; | |
237 | ||
238 | mask = ~ ( (~0) << alignment ); | |
239 | new_address = (address + mask) & (~ mask); | |
240 | return (new_address - address); | |
241 | } /* relax_align() */ | |
242 | ||
243 | ||
244 | segT | |
245 | DEFUN(s_get_segment,(x) , | |
246 | symbolS* x) | |
247 | { | |
248 | return SEG_INFO_FROM_SECTION_NUMBER(x->sy_symbol.ost_entry.n_scnum).seg_t; | |
249 | } | |
250 | ||
251 | ||
252 | ||
253 | /* calculate the size of the frag chain and fill in the section header | |
254 | to contain all of it, also fill in the addr of the sections */ | |
255 | static unsigned int DEFUN(size_section,(abfd, idx), | |
256 | bfd *abfd AND | |
257 | unsigned int idx) | |
258 | { | |
259 | asection *sec; | |
260 | unsigned int size = 0; | |
f714e310 | 261 | fragS *frag = segment_info[idx].frchainP->frch_root; |
23de7ff6 SC |
262 | while (frag) { |
263 | if (frag->fr_address != size) { | |
264 | printf("Out of step\n"); | |
265 | size = frag->fr_address; | |
266 | } | |
267 | size += frag->fr_fix; | |
268 | switch (frag->fr_type) { | |
269 | case rs_fill: | |
270 | case rs_org: | |
271 | size += frag->fr_offset * frag->fr_var; | |
272 | break; | |
273 | case rs_align: | |
274 | size += relax_align(size, frag->fr_offset); | |
275 | } | |
276 | frag = frag->fr_next; | |
277 | } | |
278 | segment_info[idx].scnhdr.s_size = size; | |
279 | return size; | |
280 | } | |
281 | ||
23de7ff6 SC |
282 | |
283 | static unsigned int DEFUN(count_entries_in_chain,(idx), | |
284 | unsigned int idx) | |
285 | { | |
63c92fcd SC |
286 | unsigned int nrelocs; |
287 | fixS *fixup_ptr; | |
23de7ff6 | 288 | |
63c92fcd SC |
289 | /* Count the relocations */ |
290 | fixup_ptr = segment_info[idx].fix_root; | |
291 | nrelocs = 0; | |
292 | while (fixup_ptr != (fixS *)NULL) | |
293 | { | |
294 | if (TC_COUNT_RELOC(fixup_ptr)) | |
295 | { | |
296 | ||
297 | #ifdef TC_A29K | |
23de7ff6 | 298 | |
63c92fcd SC |
299 | if (fixup_ptr->fx_r_type == RELOC_CONSTH) |
300 | nrelocs+=2; | |
301 | else | |
302 | nrelocs++; | |
303 | #else | |
304 | nrelocs++; | |
305 | #endif | |
306 | } | |
307 | ||
308 | fixup_ptr = fixup_ptr->fx_next; | |
309 | } | |
310 | return nrelocs; | |
23de7ff6 SC |
311 | } |
312 | ||
313 | /* output all the relocations for a section */ | |
314 | void DEFUN(do_relocs_for,(abfd, file_cursor), | |
315 | bfd *abfd AND | |
316 | unsigned long *file_cursor) | |
317 | { | |
63c92fcd SC |
318 | unsigned int nrelocs; |
319 | arelent **reloc_ptr_vector; | |
320 | arelent *reloc_vector; | |
321 | asymbol **ptrs; | |
322 | unsigned int idx; | |
23de7ff6 | 323 | |
23de7ff6 | 324 | |
63c92fcd SC |
325 | unsigned int i; |
326 | fixS *from; | |
327 | for (idx = SEG_E0; idx < SEG_E9; idx++) | |
328 | { | |
329 | if (segment_info[idx].scnhdr.s_name[0]) | |
330 | { | |
23de7ff6 | 331 | |
63c92fcd SC |
332 | struct external_reloc *ext_ptr; |
333 | struct external_reloc *external_reloc_vec; | |
334 | unsigned int external_reloc_size; | |
335 | unsigned int count = 0; | |
336 | unsigned int base = segment_info[idx].scnhdr.s_paddr; | |
337 | fixS * fix_ptr = segment_info[idx].fix_root; | |
338 | nrelocs = count_entries_in_chain(idx); | |
339 | external_reloc_size = nrelocs * RELSZ; | |
340 | external_reloc_vec = | |
341 | (struct external_reloc*)alloca(external_reloc_size); | |
23de7ff6 | 342 | |
23de7ff6 | 343 | |
63c92fcd SC |
344 | |
345 | ext_ptr = external_reloc_vec; | |
346 | ||
347 | /* Fill in the internal coff style reloc struct from the | |
348 | internal fix list */ | |
349 | while (fix_ptr) | |
350 | { | |
351 | symbolS *symbol_ptr; | |
352 | struct internal_reloc intr; | |
353 | ||
354 | /* Only output some of the relocations */ | |
355 | if (TC_COUNT_RELOC(fix_ptr)) | |
356 | { | |
357 | symbolS *dot; | |
358 | symbol_ptr = fix_ptr->fx_addsy; | |
359 | ||
360 | intr.r_type = TC_COFF_FIX2RTYPE(fix_ptr); | |
361 | intr.r_vaddr = base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where ; | |
362 | ||
363 | ||
364 | /* Turn the segment of the symbol into an offset | |
365 | */ | |
366 | dot = | |
367 | segment_info[S_GET_SEGMENT(symbol_ptr)].dot; | |
368 | ||
369 | if (dot) | |
370 | { | |
371 | intr.r_symndx = dot->sy_number; | |
372 | } | |
373 | else | |
374 | { | |
375 | intr.r_symndx = symbol_ptr->sy_number; | |
376 | } | |
23de7ff6 | 377 | |
63c92fcd SC |
378 | |
379 | (void)bfd_coff_swap_reloc_out(abfd, &intr, ext_ptr); | |
380 | ext_ptr++; | |
381 | ||
382 | #if defined(TC_A29K) | |
383 | /* The 29k has a special kludge for the high 16 bit reloc. | |
384 | Two relocations are emmited, R_IHIHALF, and | |
385 | R_IHCONST. The second one doesn't contain a symbol, | |
386 | but uses the value for offset */ | |
387 | ||
388 | if (intr.r_type == R_IHIHALF) | |
389 | { | |
390 | /* now emit the second bit */ | |
391 | intr.r_type = R_IHCONST; | |
392 | intr.r_symndx = fix_ptr->fx_addnumber; | |
393 | (void)bfd_coff_swap_reloc_out(abfd,&intr,ext_ptr); | |
394 | ext_ptr++; | |
395 | } | |
396 | #endif | |
397 | } | |
398 | ||
399 | fix_ptr = fix_ptr->fx_next; | |
400 | } | |
23de7ff6 | 401 | |
63c92fcd SC |
402 | /* Write out the reloc table */ |
403 | segment_info[idx].scnhdr.s_relptr = *file_cursor; | |
404 | segment_info[idx].scnhdr.s_nreloc = nrelocs; | |
405 | bfd_write(external_reloc_vec, 1, external_reloc_size, abfd); | |
406 | *file_cursor += external_reloc_size; | |
407 | } | |
23de7ff6 | 408 | } |
23de7ff6 SC |
409 | } |
410 | ||
411 | ||
412 | /* run through a frag chain and write out the data to go with it, fill | |
413 | in the scnhdrs with the info on the file postions | |
414 | */ | |
415 | static void DEFUN(fill_section,(abfd, filehdr, file_cursor), | |
416 | bfd *abfd AND | |
417 | struct internal_filehdr *filehdr AND | |
418 | unsigned long *file_cursor) | |
419 | { | |
420 | ||
421 | unsigned int i; | |
422 | unsigned int paddr = 0; | |
423 | ||
424 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) { | |
425 | unsigned int offset = 0; | |
426 | ||
63c92fcd | 427 | |
23de7ff6 SC |
428 | struct internal_scnhdr *s = &( segment_info[i].scnhdr); |
429 | ||
430 | if (s->s_name[0]) { | |
f714e310 | 431 | fragS *frag = segment_info[i].frchainP->frch_root; |
23de7ff6 SC |
432 | char *buffer = alloca(s->s_size); |
433 | s->s_scnptr = *file_cursor; | |
434 | s->s_paddr = paddr; | |
435 | s->s_vaddr = paddr; | |
436 | ||
437 | s->s_flags = STYP_REG; | |
438 | if (strcmp(s->s_name,".text")==0) | |
439 | s->s_flags |= STYP_TEXT; | |
440 | else if (strcmp(s->s_name,".data")==0) | |
441 | s->s_flags |= STYP_DATA; | |
63c92fcd | 442 | else if (strcmp(s->s_name,".bss")==0) |
23de7ff6 SC |
443 | s->s_flags |= STYP_BSS | STYP_NOLOAD; |
444 | ||
23de7ff6 SC |
445 | while (frag) { |
446 | unsigned int fill_size; | |
23de7ff6 SC |
447 | switch (frag->fr_type) { |
448 | case rs_fill: | |
449 | case rs_align: | |
450 | case rs_org: | |
451 | if(frag->fr_fix) | |
452 | { | |
453 | memcpy(buffer + frag->fr_address, | |
454 | frag->fr_literal, | |
455 | frag->fr_fix); | |
456 | offset += frag->fr_fix; | |
457 | } | |
458 | ||
459 | fill_size = frag->fr_var; | |
460 | if (fill_size) | |
461 | { | |
63c92fcd SC |
462 | unsigned int count ; |
463 | unsigned int off = frag->fr_fix; | |
464 | for (count = frag->fr_offset; count; count--) | |
465 | { | |
466 | memcpy(buffer + frag->fr_address + off, | |
467 | frag->fr_literal + frag->fr_fix, | |
468 | fill_size); | |
469 | off += fill_size; | |
470 | offset += fill_size; | |
23de7ff6 | 471 | |
63c92fcd | 472 | } |
23de7ff6 SC |
473 | |
474 | } | |
475 | break; | |
476 | default: | |
477 | abort(); | |
478 | } | |
479 | frag = frag->fr_next; | |
480 | } | |
481 | ||
63c92fcd SC |
482 | |
483 | ||
23de7ff6 SC |
484 | bfd_write(buffer, s->s_size,1,abfd); |
485 | *file_cursor += s->s_size; | |
63c92fcd | 486 | paddr += s->s_size; |
23de7ff6 SC |
487 | } |
488 | } | |
63c92fcd | 489 | |
23de7ff6 SC |
490 | } |
491 | ||
492 | ||
493 | ||
494 | /* Coff file generation & utilities */ | |
495 | ||
496 | ||
497 | static void | |
814e8bba | 498 | DEFUN(coff_header_append,(abfd, filehdr, aouthdr), |
23de7ff6 SC |
499 | bfd *abfd AND |
500 | struct internal_filehdr *filehdr AND | |
501 | struct internal_aouthdr *aouthdr) | |
502 | { | |
503 | unsigned int i; | |
504 | char buffer[1000]; | |
505 | char buffero[1000]; | |
506 | ||
507 | bfd_seek(abfd, 0, 0); | |
508 | #if 0 | |
509 | filehdr.f_opthdr = bfd_coff_swap_aouthdr_out(abfd, aouthdr, | |
510 | buffero); | |
511 | #else | |
512 | filehdr->f_opthdr = 0; | |
513 | #endif | |
514 | i = bfd_coff_swap_filehdr_out(abfd, filehdr, buffer); | |
515 | ||
516 | bfd_write(buffer, i ,1, abfd); | |
517 | bfd_write(buffero, filehdr->f_opthdr, 1, abfd); | |
518 | ||
519 | for (i = SEG_E0; i < SEG_E9; i++) | |
520 | { | |
521 | if (segment_info[i].scnhdr.s_name[0]) | |
522 | { | |
523 | unsigned int size = | |
524 | bfd_coff_swap_scnhdr_out(abfd, | |
525 | &(segment_info[i].scnhdr), | |
526 | buffer); | |
527 | bfd_write(buffer, size, 1, abfd); | |
528 | } | |
529 | } | |
530 | } | |
531 | ||
532 | ||
533 | void | |
534 | DEFUN(symbol_to_chars,(abfd, where, symbolP), | |
535 | bfd*abfd AND | |
536 | char **where AND | |
537 | symbolS *symbolP) | |
538 | { | |
539 | unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux; | |
540 | unsigned int i; | |
541 | ||
542 | /* Turn any symbols with register attributes into abs symbols */ | |
543 | if (S_GET_SEGMENT(symbolP) == SEG_REGISTER) | |
544 | { | |
545 | S_SET_SEGMENT(symbolP, SEG_ABSOLUTE); | |
546 | } | |
63c92fcd SC |
547 | /* At the same time, relocate all symbols to their output value */ |
548 | ||
549 | S_SET_VALUE(symbolP, | |
550 | segment_info[S_GET_SEGMENT(symbolP)].scnhdr.s_paddr | |
551 | + S_GET_VALUE(symbolP)); | |
552 | ||
23de7ff6 SC |
553 | *where += bfd_coff_swap_sym_out(abfd, &symbolP->sy_symbol.ost_entry, |
554 | *where); | |
555 | ||
556 | for (i = 0; i < numaux; i++) | |
557 | { | |
558 | *where += bfd_coff_swap_aux_out(abfd, | |
559 | &symbolP->sy_symbol.ost_auxent[i], | |
560 | S_GET_DATA_TYPE(symbolP), | |
561 | S_GET_STORAGE_CLASS(symbolP), | |
562 | *where); | |
563 | } | |
564 | } | |
565 | ||
566 | ||
567 | ||
568 | ||
569 | void obj_symbol_new_hook(symbolP) | |
570 | symbolS *symbolP; | |
571 | { | |
572 | char underscore = 0; /* Symbol has leading _ */ | |
573 | ||
574 | /* Effective symbol */ | |
575 | /* Store the pointer in the offset. */ | |
576 | S_SET_ZEROES(symbolP, 0L); | |
577 | S_SET_DATA_TYPE(symbolP, T_NULL); | |
578 | S_SET_STORAGE_CLASS(symbolP, 0); | |
579 | S_SET_NUMBER_AUXILIARY(symbolP, 0); | |
580 | /* Additional information */ | |
581 | symbolP->sy_symbol.ost_flags = 0; | |
582 | /* Auxiliary entries */ | |
583 | bzero((char*)&symbolP->sy_symbol.ost_auxent[0], AUXESZ); | |
584 | ||
585 | #ifdef STRIP_UNDERSCORE | |
586 | /* Remove leading underscore at the beginning of the symbol. | |
587 | * This is to be compatible with the standard librairies. | |
588 | */ | |
589 | if (*S_GET_NAME(symbolP) == '_') { | |
590 | underscore = 1; | |
591 | S_SET_NAME(symbolP, S_GET_NAME(symbolP) + 1); | |
592 | } /* strip underscore */ | |
593 | #endif /* STRIP_UNDERSCORE */ | |
594 | ||
595 | if (S_IS_STRING(symbolP)) | |
596 | SF_SET_STRING(symbolP); | |
597 | if (!underscore && S_IS_LOCAL(symbolP)) | |
598 | SF_SET_LOCAL(symbolP); | |
599 | ||
600 | return; | |
601 | } /* obj_symbol_new_hook() */ | |
602 | ||
603 | /* stack stuff */ | |
604 | stack* stack_init(chunk_size, element_size) | |
605 | unsigned long chunk_size; | |
606 | unsigned long element_size; | |
607 | { | |
608 | stack* st; | |
609 | ||
610 | if ((st = (stack*)malloc(sizeof(stack))) == (stack*)0) | |
611 | return (stack*)0; | |
612 | if ((st->data = malloc(chunk_size)) == (char*)0) { | |
613 | free(st); | |
614 | return (stack*)0; | |
615 | } | |
616 | st->pointer = 0; | |
617 | st->size = chunk_size; | |
618 | st->chunk_size = chunk_size; | |
619 | st->element_size = element_size; | |
620 | return st; | |
621 | } /* stack_init() */ | |
622 | ||
623 | void stack_delete(st) | |
624 | stack* st; | |
625 | { | |
626 | free(st->data); | |
627 | free(st); | |
628 | } | |
629 | ||
630 | char *stack_push(st, element) | |
631 | stack *st; | |
632 | char *element; | |
633 | { | |
634 | if (st->pointer + st->element_size >= st->size) { | |
635 | st->size += st->chunk_size; | |
636 | if ((st->data = xrealloc(st->data, st->size)) == (char*)0) | |
637 | return (char*)0; | |
638 | } | |
639 | memcpy(st->data + st->pointer, element, st->element_size); | |
640 | st->pointer += st->element_size; | |
641 | return st->data + st->pointer; | |
642 | } /* stack_push() */ | |
643 | ||
644 | char* stack_pop(st) | |
645 | stack* st; | |
646 | { | |
647 | if ((st->pointer -= st->element_size) < 0) { | |
648 | st->pointer = 0; | |
649 | return (char*)0; | |
650 | } | |
651 | return st->data + st->pointer; | |
652 | } | |
653 | ||
654 | char* stack_top(st) | |
655 | stack* st; | |
656 | { | |
657 | return st->data + st->pointer - st->element_size; | |
658 | } | |
659 | ||
660 | ||
661 | /* | |
662 | * Handle .ln directives. | |
663 | */ | |
664 | ||
665 | static void obj_coff_ln() { | |
666 | if (def_symbol_in_progress != NULL) { | |
667 | as_warn(".ln pseudo-op inside .def/.endef: ignored."); | |
668 | demand_empty_rest_of_line(); | |
669 | return; | |
670 | } /* wrong context */ | |
671 | ||
672 | c_line_new(0, | |
673 | obstack_next_free(&frags) - frag_now->fr_literal, | |
674 | get_absolute_expression(), | |
675 | frag_now); | |
676 | ||
677 | demand_empty_rest_of_line(); | |
678 | return; | |
679 | } /* obj_coff_line() */ | |
680 | ||
681 | /* | |
682 | * def() | |
683 | * | |
684 | * Handle .def directives. | |
685 | * | |
686 | * One might ask : why can't we symbol_new if the symbol does not | |
687 | * already exist and fill it with debug information. Because of | |
688 | * the C_EFCN special symbol. It would clobber the value of the | |
689 | * function symbol before we have a chance to notice that it is | |
690 | * a C_EFCN. And a second reason is that the code is more clear this | |
691 | * way. (at least I think it is :-). | |
692 | * | |
693 | */ | |
694 | ||
695 | #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') | |
696 | #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ | |
697 | *input_line_pointer == '\t') \ | |
698 | input_line_pointer++; | |
699 | ||
700 | static void obj_coff_def(what) | |
701 | int what; | |
702 | { | |
703 | char name_end; /* Char after the end of name */ | |
704 | char *symbol_name; /* Name of the debug symbol */ | |
705 | char *symbol_name_copy; /* Temporary copy of the name */ | |
706 | unsigned int symbol_name_length; | |
707 | /*$char* directiveP;$ */ /* Name of the pseudo opcode */ | |
708 | /*$char directive[MAX_DIRECTIVE];$ */ /* Backup of the directive */ | |
709 | /*$char end = 0;$ */ /* If 1, stop parsing */ | |
710 | ||
711 | if (def_symbol_in_progress != NULL) { | |
712 | as_warn(".def pseudo-op used inside of .def/.endef: ignored."); | |
713 | demand_empty_rest_of_line(); | |
714 | return; | |
715 | } /* if not inside .def/.endef */ | |
716 | ||
717 | SKIP_WHITESPACES(); | |
718 | ||
719 | def_symbol_in_progress = (symbolS *) obstack_alloc(¬es, sizeof(*def_symbol_in_progress)); | |
720 | bzero(def_symbol_in_progress, sizeof(*def_symbol_in_progress)); | |
721 | ||
722 | symbol_name = input_line_pointer; | |
723 | name_end = get_symbol_end(); | |
724 | symbol_name_length = strlen(symbol_name); | |
725 | symbol_name_copy = xmalloc(symbol_name_length + 1); | |
726 | strcpy(symbol_name_copy, symbol_name); | |
727 | ||
728 | /* Initialize the new symbol */ | |
729 | #ifdef STRIP_UNDERSCORE | |
730 | S_SET_NAME(def_symbol_in_progress, (*symbol_name_copy == '_' | |
731 | ? symbol_name_copy + 1 | |
732 | : symbol_name_copy)); | |
733 | #else /* STRIP_UNDERSCORE */ | |
734 | S_SET_NAME(def_symbol_in_progress, symbol_name_copy); | |
735 | #endif /* STRIP_UNDERSCORE */ | |
736 | /* free(symbol_name_copy); */ | |
737 | def_symbol_in_progress->sy_name_offset = ~0; | |
738 | def_symbol_in_progress->sy_number = ~0; | |
739 | def_symbol_in_progress->sy_frag = &zero_address_frag; | |
740 | ||
741 | if (S_IS_STRING(def_symbol_in_progress)) { | |
742 | SF_SET_STRING(def_symbol_in_progress); | |
743 | } /* "long" name */ | |
744 | ||
745 | *input_line_pointer = name_end; | |
746 | ||
747 | demand_empty_rest_of_line(); | |
748 | return; | |
749 | } /* obj_coff_def() */ | |
750 | ||
751 | unsigned int dim_index; | |
752 | static void obj_coff_endef() { | |
753 | symbolS *symbolP; | |
754 | /* DIM BUG FIX sac@cygnus.com */ | |
755 | dim_index =0; | |
756 | if (def_symbol_in_progress == NULL) { | |
757 | as_warn(".endef pseudo-op used outside of .def/.endef: ignored."); | |
758 | demand_empty_rest_of_line(); | |
759 | return; | |
760 | } /* if not inside .def/.endef */ | |
761 | ||
762 | /* Set the section number according to storage class. */ | |
763 | switch (S_GET_STORAGE_CLASS(def_symbol_in_progress)) { | |
764 | case C_STRTAG: | |
765 | case C_ENTAG: | |
766 | case C_UNTAG: | |
767 | SF_SET_TAG(def_symbol_in_progress); | |
768 | /* intentional fallthrough */ | |
769 | case C_FILE: | |
770 | case C_TPDEF: | |
771 | SF_SET_DEBUG(def_symbol_in_progress); | |
772 | S_SET_SEGMENT(def_symbol_in_progress, SEG_DEBUG); | |
773 | break; | |
774 | ||
775 | case C_EFCN: | |
776 | SF_SET_LOCAL(def_symbol_in_progress); /* Do not emit this symbol. */ | |
777 | /* intentional fallthrough */ | |
778 | case C_BLOCK: | |
779 | SF_SET_PROCESS(def_symbol_in_progress); /* Will need processing before writing */ | |
780 | /* intentional fallthrough */ | |
781 | case C_FCN: | |
782 | S_SET_SEGMENT(def_symbol_in_progress, SEG_E0); | |
783 | ||
784 | if (def_symbol_in_progress->sy_symbol.ost_entry.n_name[1] == 'b') { /* .bf */ | |
785 | if (function_lineoff < 0) { | |
786 | fprintf(stderr, "`.bf' symbol without preceding function\n"); | |
787 | } /* missing function symbol */ | |
788 | SA_GET_SYM_LNNOPTR(def_symbol_in_progress) = function_lineoff; | |
789 | SF_SET_PROCESS(def_symbol_in_progress); /* Will need relocating */ | |
790 | function_lineoff = -1; | |
791 | } | |
792 | break; | |
793 | ||
794 | #ifdef C_AUTOARG | |
795 | case C_AUTOARG: | |
796 | #endif /* C_AUTOARG */ | |
797 | case C_AUTO: | |
798 | case C_REG: | |
799 | case C_MOS: | |
800 | case C_MOE: | |
801 | case C_MOU: | |
802 | case C_ARG: | |
803 | case C_REGPARM: | |
804 | case C_FIELD: | |
805 | case C_EOS: | |
806 | SF_SET_DEBUG(def_symbol_in_progress); | |
807 | S_SET_SEGMENT(def_symbol_in_progress, SEG_ABSOLUTE); | |
808 | break; | |
809 | ||
810 | case C_EXT: | |
811 | case C_STAT: | |
812 | case C_LABEL: | |
813 | /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ | |
814 | break; | |
815 | ||
816 | case C_USTATIC: | |
817 | case C_EXTDEF: | |
818 | case C_ULABEL: | |
819 | as_warn("unexpected storage class %d", S_GET_STORAGE_CLASS(def_symbol_in_progress)); | |
820 | break; | |
821 | } /* switch on storage class */ | |
822 | ||
823 | /* Now that we have built a debug symbol, try to | |
824 | find if we should merge with an existing symbol | |
825 | or not. If a symbol is C_EFCN or SEG_ABSOLUTE or | |
826 | untagged SEG_DEBUG it never merges. */ | |
827 | ||
828 | /* Two cases for functions. Either debug followed | |
829 | by definition or definition followed by debug. | |
830 | For definition first, we will merge the debug | |
831 | symbol into the definition. For debug first, the | |
832 | lineno entry MUST point to the definition | |
833 | function or else it will point off into space | |
834 | when crawl_symbols() merges the debug | |
835 | symbol into the real symbol. Therefor, let's | |
836 | presume the debug symbol is a real function | |
837 | reference. */ | |
838 | ||
839 | /* FIXME-SOON If for some reason the definition | |
840 | label/symbol is never seen, this will probably | |
841 | leave an undefined symbol at link time. */ | |
842 | ||
843 | if (S_GET_STORAGE_CLASS(def_symbol_in_progress) == C_EFCN | |
844 | || (S_GET_SEGMENT(def_symbol_in_progress) == SEG_DEBUG | |
845 | && !SF_GET_TAG(def_symbol_in_progress)) | |
846 | || S_GET_SEGMENT(def_symbol_in_progress) == SEG_ABSOLUTE | |
847 | || (symbolP = symbol_find_base(S_GET_NAME(def_symbol_in_progress), DO_NOT_STRIP)) == NULL) { | |
848 | ||
849 | symbol_append(def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
850 | ||
851 | } else { | |
852 | /* This symbol already exists, merge the | |
853 | newly created symbol into the old one. | |
854 | This is not mandatory. The linker can | |
855 | handle duplicate symbols correctly. But I | |
856 | guess that it save a *lot* of space if | |
857 | the assembly file defines a lot of | |
858 | symbols. [loic] */ | |
859 | ||
860 | /* The debug entry (def_symbol_in_progress) | |
861 | is merged into the previous definition. */ | |
862 | ||
863 | c_symbol_merge(def_symbol_in_progress, symbolP); | |
864 | /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */ | |
865 | def_symbol_in_progress = symbolP; | |
866 | ||
867 | if (SF_GET_FUNCTION(def_symbol_in_progress) | |
868 | || SF_GET_TAG(def_symbol_in_progress)) { | |
869 | /* For functions, and tags, the symbol *must* be where the debug symbol | |
870 | appears. Move the existing symbol to the current place. */ | |
871 | /* If it already is at the end of the symbol list, do nothing */ | |
872 | if (def_symbol_in_progress != symbol_lastP) { | |
873 | symbol_remove(def_symbol_in_progress, &symbol_rootP, &symbol_lastP); | |
874 | symbol_append(def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
875 | } /* if not already in place */ | |
876 | } /* if function */ | |
877 | } /* normal or mergable */ | |
878 | ||
879 | if (SF_GET_TAG(def_symbol_in_progress) | |
880 | && symbol_find_base(S_GET_NAME(def_symbol_in_progress), DO_NOT_STRIP) == NULL) { | |
881 | tag_insert(S_GET_NAME(def_symbol_in_progress), def_symbol_in_progress); | |
882 | } /* If symbol is a {structure,union} tag, associate symbol to its name. */ | |
883 | ||
884 | if (SF_GET_FUNCTION(def_symbol_in_progress)) { | |
885 | know(sizeof(def_symbol_in_progress) <= sizeof(long)); | |
886 | function_lineoff = c_line_new((long) def_symbol_in_progress,0, 0, &zero_address_frag); | |
887 | SF_SET_PROCESS(def_symbol_in_progress); | |
888 | ||
889 | if (symbolP == NULL) { | |
890 | /* That is, if this is the first | |
891 | time we've seen the function... */ | |
892 | symbol_table_insert(def_symbol_in_progress); | |
893 | } /* definition follows debug */ | |
894 | } /* Create the line number entry pointing to the function being defined */ | |
895 | ||
896 | def_symbol_in_progress = NULL; | |
897 | demand_empty_rest_of_line(); | |
898 | return; | |
899 | } /* obj_coff_endef() */ | |
900 | ||
901 | static void obj_coff_dim() | |
902 | { | |
903 | register int dim_index; | |
904 | ||
905 | if (def_symbol_in_progress == NULL) { | |
906 | as_warn(".dim pseudo-op used outside of .def/.endef: ignored."); | |
907 | demand_empty_rest_of_line(); | |
908 | return; | |
909 | } /* if not inside .def/.endef */ | |
910 | ||
911 | S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); | |
912 | ||
913 | for (dim_index = 0; dim_index < DIMNUM; dim_index++) { | |
914 | SKIP_WHITESPACES(); | |
915 | SA_SET_SYM_DIMEN(def_symbol_in_progress, dim_index, get_absolute_expression()); | |
916 | ||
917 | switch (*input_line_pointer) { | |
918 | ||
919 | case ',': | |
920 | input_line_pointer++; | |
921 | break; | |
922 | ||
923 | default: | |
924 | as_warn("badly formed .dim directive ignored"); | |
925 | /* intentional fallthrough */ | |
926 | case '\n': | |
927 | case ';': | |
928 | dim_index = DIMNUM; | |
929 | break; | |
930 | } /* switch on following character */ | |
931 | } /* for each dimension */ | |
932 | ||
933 | demand_empty_rest_of_line(); | |
934 | return; | |
935 | } /* obj_coff_dim() */ | |
936 | ||
937 | static void obj_coff_line() { | |
938 | if (def_symbol_in_progress == NULL) { | |
939 | obj_coff_ln(); | |
940 | return; | |
941 | } /* if it looks like a stabs style line */ | |
942 | ||
943 | S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); | |
944 | SA_SET_SYM_LNNO(def_symbol_in_progress, get_absolute_expression()); | |
945 | ||
946 | demand_empty_rest_of_line(); | |
947 | return; | |
948 | } /* obj_coff_line() */ | |
949 | ||
950 | static void obj_coff_size() { | |
951 | if (def_symbol_in_progress == NULL) { | |
952 | as_warn(".size pseudo-op used outside of .def/.endef ignored."); | |
953 | demand_empty_rest_of_line(); | |
954 | return; | |
955 | } /* if not inside .def/.endef */ | |
956 | ||
957 | S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); | |
958 | SA_SET_SYM_SIZE(def_symbol_in_progress, get_absolute_expression()); | |
959 | demand_empty_rest_of_line(); | |
960 | return; | |
961 | } /* obj_coff_size() */ | |
962 | ||
963 | static void obj_coff_scl() { | |
964 | if (def_symbol_in_progress == NULL) { | |
965 | as_warn(".scl pseudo-op used outside of .def/.endef ignored."); | |
966 | demand_empty_rest_of_line(); | |
967 | return; | |
968 | } /* if not inside .def/.endef */ | |
969 | ||
970 | S_SET_STORAGE_CLASS(def_symbol_in_progress, get_absolute_expression()); | |
971 | demand_empty_rest_of_line(); | |
972 | return; | |
973 | } /* obj_coff_scl() */ | |
974 | ||
975 | static void obj_coff_tag() { | |
976 | char *symbol_name; | |
977 | char name_end; | |
978 | ||
979 | if (def_symbol_in_progress == NULL) { | |
980 | as_warn(".tag pseudo-op used outside of .def/.endef ignored."); | |
981 | demand_empty_rest_of_line(); | |
982 | return; | |
983 | } /* if not inside .def/.endef */ | |
984 | ||
985 | S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); | |
986 | symbol_name = input_line_pointer; | |
987 | name_end = get_symbol_end(); | |
988 | ||
989 | /* Assume that the symbol referred to by .tag is always defined. */ | |
990 | /* This was a bad assumption. I've added find_or_make. xoxorich. */ | |
991 | SA_SET_SYM_TAGNDX(def_symbol_in_progress, (long) tag_find_or_make(symbol_name)); | |
992 | if (SA_GET_SYM_TAGNDX(def_symbol_in_progress) == 0L) { | |
993 | as_warn("tag not found for .tag %s", symbol_name); | |
994 | } /* not defined */ | |
995 | ||
996 | SF_SET_TAGGED(def_symbol_in_progress); | |
997 | *input_line_pointer = name_end; | |
998 | ||
999 | demand_empty_rest_of_line(); | |
1000 | return; | |
1001 | } /* obj_coff_tag() */ | |
1002 | ||
1003 | static void obj_coff_type() { | |
1004 | if (def_symbol_in_progress == NULL) { | |
1005 | as_warn(".type pseudo-op used outside of .def/.endef ignored."); | |
1006 | demand_empty_rest_of_line(); | |
1007 | return; | |
1008 | } /* if not inside .def/.endef */ | |
1009 | ||
1010 | S_SET_DATA_TYPE(def_symbol_in_progress, get_absolute_expression()); | |
1011 | ||
1012 | if (ISFCN(S_GET_DATA_TYPE(def_symbol_in_progress)) && | |
1013 | S_GET_STORAGE_CLASS(def_symbol_in_progress) != C_TPDEF) { | |
1014 | SF_SET_FUNCTION(def_symbol_in_progress); | |
1015 | } /* is a function */ | |
1016 | ||
1017 | demand_empty_rest_of_line(); | |
1018 | return; | |
1019 | } /* obj_coff_type() */ | |
1020 | ||
1021 | static void obj_coff_val() { | |
1022 | if (def_symbol_in_progress == NULL) { | |
1023 | as_warn(".val pseudo-op used outside of .def/.endef ignored."); | |
1024 | demand_empty_rest_of_line(); | |
1025 | return; | |
1026 | } /* if not inside .def/.endef */ | |
1027 | ||
1028 | if (is_name_beginner(*input_line_pointer)) { | |
1029 | char *symbol_name = input_line_pointer; | |
1030 | char name_end = get_symbol_end(); | |
1031 | ||
1032 | if (!strcmp(symbol_name, ".")) { | |
1033 | def_symbol_in_progress->sy_frag = frag_now; | |
1034 | S_SET_VALUE(def_symbol_in_progress, obstack_next_free(&frags) - frag_now->fr_literal); | |
1035 | /* If the .val is != from the .def (e.g. statics) */ | |
1036 | } else if (strcmp(S_GET_NAME(def_symbol_in_progress), symbol_name)) { | |
1037 | def_symbol_in_progress->sy_forward = symbol_find_or_make(symbol_name); | |
1038 | ||
1039 | /* If the segment is undefined when the forward | |
1040 | reference is solved, then copy the segment id | |
1041 | from the forward symbol. */ | |
1042 | SF_SET_GET_SEGMENT(def_symbol_in_progress); | |
1043 | } | |
1044 | /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */ | |
1045 | *input_line_pointer = name_end; | |
1046 | } else { | |
1047 | S_SET_VALUE(def_symbol_in_progress, get_absolute_expression()); | |
1048 | } /* if symbol based */ | |
1049 | ||
1050 | demand_empty_rest_of_line(); | |
1051 | return; | |
1052 | } /* obj_coff_val() */ | |
1053 | ||
1054 | /* | |
1055 | * Maintain a list of the tagnames of the structres. | |
1056 | */ | |
1057 | ||
1058 | static void tag_init() { | |
1059 | tag_hash = hash_new(); | |
1060 | return ; | |
1061 | } /* tag_init() */ | |
1062 | ||
1063 | static void tag_insert(name, symbolP) | |
1064 | char *name; | |
1065 | symbolS *symbolP; | |
1066 | { | |
1067 | register char * error_string; | |
1068 | ||
1069 | if (*(error_string = hash_jam(tag_hash, name, (char *)symbolP))) { | |
1070 | as_fatal("Inserting \"%s\" into structure table failed: %s", | |
1071 | name, error_string); | |
1072 | } | |
1073 | return ; | |
1074 | } /* tag_insert() */ | |
1075 | ||
1076 | static symbolS *tag_find_or_make(name) | |
1077 | char *name; | |
1078 | { | |
1079 | symbolS *symbolP; | |
1080 | ||
1081 | if ((symbolP = tag_find(name)) == NULL) { | |
1082 | symbolP = symbol_new(name, | |
1083 | SEG_UNKNOWN, | |
1084 | 0, | |
1085 | &zero_address_frag); | |
1086 | ||
1087 | tag_insert(S_GET_NAME(symbolP), symbolP); | |
1088 | symbol_table_insert(symbolP); | |
1089 | } /* not found */ | |
1090 | ||
1091 | return(symbolP); | |
1092 | } /* tag_find_or_make() */ | |
1093 | ||
1094 | static symbolS *tag_find(name) | |
1095 | char *name; | |
1096 | { | |
1097 | #ifdef STRIP_UNDERSCORE | |
1098 | if (*name == '_') name++; | |
1099 | #endif /* STRIP_UNDERSCORE */ | |
1100 | return((symbolS*)hash_find(tag_hash, name)); | |
1101 | } /* tag_find() */ | |
1102 | ||
1103 | void obj_read_begin_hook() { | |
1104 | /* These had better be the same. Usually 18 bytes. */ | |
1105 | #ifndef BFD_HEADERS | |
1106 | know(sizeof(SYMENT) == sizeof(AUXENT)); | |
1107 | know(SYMESZ == AUXESZ); | |
1108 | #endif | |
1109 | tag_init(); | |
1110 | ||
1111 | return; | |
1112 | } /* obj_read_begin_hook() */ | |
1113 | ||
1114 | /* This function runs through the symbol table and puts all the | |
1115 | externals onto another chain */ | |
1116 | ||
1117 | /* The chain of externals */ | |
1118 | symbolS *symbol_externP = NULL; | |
1119 | symbolS *symbol_extern_lastP = NULL; | |
1120 | ||
1121 | stack*block_stack; | |
1122 | symbolS *last_functionP = NULL; | |
1123 | symbolS *last_tagP; | |
1124 | ||
1125 | ||
1126 | static unsigned int DEFUN_VOID(yank_symbols) | |
1127 | { | |
1128 | symbolS *symbolP; | |
1129 | unsigned int symbol_number =0; | |
1130 | ||
1131 | for (symbolP = symbol_rootP; | |
1132 | symbolP; | |
1133 | symbolP = symbolP ? symbol_next(symbolP) : symbol_rootP) { | |
1134 | if (!SF_GET_DEBUG(symbolP)) { | |
1135 | /* Debug symbols do not need all this rubbish */ | |
1136 | symbolS* real_symbolP; | |
1137 | ||
1138 | /* L* and C_EFCN symbols never merge. */ | |
1139 | if (!SF_GET_LOCAL(symbolP) | |
1140 | && (real_symbolP = symbol_find_base(S_GET_NAME(symbolP), DO_NOT_STRIP)) | |
1141 | && real_symbolP != symbolP) { | |
1142 | /* FIXME-SOON: where do dups come from? | |
1143 | Maybe tag references before definitions? xoxorich. */ | |
1144 | /* Move the debug data from the debug symbol to the | |
1145 | real symbol. Do NOT do the oposite (i.e. move from | |
1146 | real symbol to debug symbol and remove real symbol from the | |
1147 | list.) Because some pointers refer to the real symbol | |
1148 | whereas no pointers refer to the debug symbol. */ | |
1149 | c_symbol_merge(symbolP, real_symbolP); | |
1150 | /* Replace the current symbol by the real one */ | |
1151 | /* The symbols will never be the last or the first | |
1152 | because : 1st symbol is .file and 3 last symbols are | |
1153 | .text, .data, .bss */ | |
1154 | symbol_remove(real_symbolP, &symbol_rootP, &symbol_lastP); | |
1155 | symbol_insert(real_symbolP, symbolP, &symbol_rootP, &symbol_lastP); | |
1156 | symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); | |
1157 | symbolP = real_symbolP; | |
1158 | } /* if not local but dup'd */ | |
1159 | ||
1160 | if (flagseen['R'] && (S_GET_SEGMENT(symbolP) == SEG_E1)) { | |
1161 | S_SET_SEGMENT(symbolP, SEG_E0); | |
1162 | } /* push data into text */ | |
1163 | ||
1164 | S_SET_VALUE(symbolP, | |
1165 | S_GET_VALUE(symbolP) + symbolP->sy_frag->fr_address); | |
1166 | ||
1167 | if (!S_IS_DEFINED(symbolP) && !SF_GET_LOCAL(symbolP)) | |
1168 | { | |
1169 | S_SET_EXTERNAL(symbolP); | |
1170 | } | |
1171 | else if (S_GET_STORAGE_CLASS(symbolP) == C_NULL) | |
1172 | { | |
1173 | if (S_GET_SEGMENT(symbolP) == SEG_E0) | |
1174 | { | |
1175 | S_SET_STORAGE_CLASS(symbolP, C_LABEL); | |
1176 | } | |
1177 | else | |
1178 | { | |
1179 | S_SET_STORAGE_CLASS(symbolP, C_STAT); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* Mainly to speed up if not -g */ | |
1184 | if (SF_GET_PROCESS(symbolP)) | |
1185 | { | |
1186 | /* Handle the nested blocks auxiliary info. */ | |
1187 | if (S_GET_STORAGE_CLASS(symbolP) == C_BLOCK) { | |
1188 | if (!strcmp(S_GET_NAME(symbolP), ".bb")) | |
1189 | stack_push(block_stack, (char *) &symbolP); | |
1190 | else { /* .eb */ | |
1191 | register symbolS* begin_symbolP; | |
1192 | begin_symbolP = *(symbolS**)stack_pop(block_stack); | |
1193 | if (begin_symbolP == (symbolS*)0) | |
1194 | as_warn("mismatched .eb"); | |
1195 | else | |
1196 | SA_SET_SYM_ENDNDX(begin_symbolP, symbol_number+2); | |
1197 | } | |
1198 | } | |
1199 | /* If we are able to identify the type of a function, and we | |
1200 | are out of a function (last_functionP == 0) then, the | |
1201 | function symbol will be associated with an auxiliary | |
1202 | entry. */ | |
1203 | if (last_functionP == (symbolS*)0 && | |
1204 | SF_GET_FUNCTION(symbolP)) { | |
1205 | last_functionP = symbolP; | |
1206 | ||
1207 | if (S_GET_NUMBER_AUXILIARY(symbolP) < 1) { | |
1208 | S_SET_NUMBER_AUXILIARY(symbolP, 1); | |
1209 | } /* make it at least 1 */ | |
1210 | ||
1211 | /* Clobber possible stale .dim information. */ | |
1212 | bzero(symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen, | |
1213 | sizeof(symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen)); | |
1214 | } | |
1215 | /* The C_FCN doesn't need any additional information. | |
1216 | I don't even know if this is needed for sdb. But the | |
1217 | standard assembler generates it, so... | |
1218 | */ | |
1219 | if (S_GET_STORAGE_CLASS(symbolP) == C_EFCN) { | |
1220 | if (last_functionP == (symbolS*)0) | |
1221 | as_fatal("C_EFCN symbol out of scope"); | |
1222 | SA_SET_SYM_FSIZE(last_functionP, | |
1223 | (long)(S_GET_VALUE(symbolP) - | |
1224 | S_GET_VALUE(last_functionP))); | |
1225 | SA_SET_SYM_ENDNDX(last_functionP, symbol_number); | |
1226 | last_functionP = (symbolS*)0; | |
1227 | } | |
1228 | } | |
1229 | } else if (SF_GET_TAG(symbolP)) { | |
1230 | /* First descriptor of a structure must point to | |
1231 | the first slot after the structure description. */ | |
1232 | last_tagP = symbolP; | |
1233 | ||
1234 | } else if (S_GET_STORAGE_CLASS(symbolP) == C_EOS) { | |
1235 | /* +2 take in account the current symbol */ | |
1236 | SA_SET_SYM_ENDNDX(last_tagP, symbol_number + 2); | |
1237 | } else if (S_GET_STORAGE_CLASS(symbolP) == C_FILE) { | |
1238 | if (S_GET_VALUE(symbolP)) { | |
1239 | S_SET_VALUE((symbolS *) S_GET_VALUE(symbolP), symbol_number); | |
1240 | S_SET_VALUE(symbolP, 0); | |
1241 | } /* no one points at the first .file symbol */ | |
1242 | } /* if debug or tag or eos or file */ | |
1243 | ||
1244 | /* We must put the external symbols apart. The loader | |
1245 | does not bomb if we do not. But the references in | |
1246 | the endndx field for a .bb symbol are not corrected | |
1247 | if an external symbol is removed between .bb and .be. | |
1248 | I.e in the following case : | |
1249 | [20] .bb endndx = 22 | |
1250 | [21] foo external | |
1251 | [22] .be | |
1252 | ld will move the symbol 21 to the end of the list but | |
1253 | endndx will still be 22 instead of 21. */ | |
1254 | ||
1255 | ||
1256 | if (SF_GET_LOCAL(symbolP)) { | |
1257 | /* remove C_EFCN and LOCAL (L...) symbols */ | |
1258 | /* next pointer remains valid */ | |
1259 | symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); | |
1260 | ||
1261 | } else if (!S_IS_DEFINED(symbolP) | |
1262 | && !S_IS_DEBUG(symbolP) | |
1263 | && !SF_GET_STATICS(symbolP)) { | |
1264 | /* S_GET_STORAGE_CLASS(symbolP) == C_EXT && !SF_GET_FUNCTION(symbolP)) { */ | |
1265 | /* if external, Remove from the list */ | |
1266 | symbolS *hold = symbol_previous(symbolP); | |
1267 | ||
1268 | symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); | |
1269 | symbol_clear_list_pointers(symbolP); | |
1270 | symbol_append(symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP); | |
1271 | symbolP = hold; | |
1272 | } else { | |
1273 | if (SF_GET_STRING(symbolP)) { | |
1274 | symbolP->sy_name_offset = string_byte_count; | |
1275 | string_byte_count += strlen(S_GET_NAME(symbolP)) + 1; | |
1276 | } else { | |
1277 | symbolP->sy_name_offset = 0; | |
1278 | } /* fix "long" names */ | |
1279 | ||
1280 | symbolP->sy_number = symbol_number; | |
1281 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY(symbolP); | |
1282 | } /* if local symbol */ | |
1283 | } /* traverse the symbol list */ | |
1284 | return symbol_number; | |
1285 | ||
1286 | } | |
1287 | ||
1288 | ||
1289 | static unsigned int DEFUN_VOID(glue_symbols) | |
1290 | { | |
1291 | unsigned int symbol_number = 0; | |
1292 | symbolS *symbolP; | |
1293 | for (symbolP = symbol_externP; symbol_externP;) { | |
1294 | symbolS *tmp = symbol_externP; | |
1295 | ||
1296 | /* append */ | |
1297 | symbol_remove(tmp, &symbol_externP, &symbol_extern_lastP); | |
1298 | symbol_append(tmp, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
1299 | ||
1300 | /* and process */ | |
1301 | if (SF_GET_STRING(tmp)) { | |
1302 | tmp->sy_name_offset = string_byte_count; | |
1303 | string_byte_count += strlen(S_GET_NAME(tmp)) + 1; | |
1304 | } else { | |
1305 | tmp->sy_name_offset = 0; | |
1306 | } /* fix "long" names */ | |
1307 | ||
1308 | tmp->sy_number = symbol_number; | |
1309 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY(tmp); | |
1310 | } /* append the entire extern chain */ | |
1311 | return symbol_number; | |
1312 | ||
1313 | } | |
1314 | ||
1315 | static unsigned int DEFUN_VOID(tie_tags) | |
1316 | { | |
1317 | unsigned int symbol_number = 0; | |
1318 | ||
1319 | symbolS*symbolP; | |
1320 | for (symbolP = symbol_rootP; symbolP; symbolP = | |
1321 | symbol_next(symbolP)) | |
1322 | { | |
1323 | symbolP->sy_number = symbol_number; | |
63c92fcd SC |
1324 | |
1325 | ||
1326 | ||
23de7ff6 SC |
1327 | if (SF_GET_TAGGED(symbolP)) |
1328 | { | |
1329 | SA_SET_SYM_TAGNDX | |
1330 | (symbolP, | |
1331 | ((symbolS*) SA_GET_SYM_TAGNDX(symbolP))->sy_number); | |
1332 | } | |
1333 | ||
1334 | symbol_number += 1 + S_GET_NUMBER_AUXILIARY(symbolP); | |
1335 | } | |
1336 | return symbol_number; | |
1337 | ||
1338 | } | |
1339 | ||
1340 | static void DEFUN(crawl_symbols,(headers, abfd), | |
1341 | struct internal_filehdr *headers AND | |
1342 | bfd *abfd) | |
1343 | { | |
1344 | ||
63c92fcd SC |
1345 | unsigned int i; |
1346 | unsigned int ptr = 0; | |
23de7ff6 | 1347 | |
23de7ff6 | 1348 | |
63c92fcd | 1349 | symbolS *symbolP; |
23de7ff6 | 1350 | |
63c92fcd | 1351 | /* Initialize the stack used to keep track of the matching .bb .be */ |
23de7ff6 | 1352 | |
63c92fcd SC |
1353 | block_stack = stack_init(512, sizeof(symbolS*)); |
1354 | /* JF deal with forward references first... */ | |
1355 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { | |
23de7ff6 | 1356 | |
63c92fcd SC |
1357 | if (symbolP->sy_forward) { |
1358 | S_SET_VALUE(symbolP, (S_GET_VALUE(symbolP) | |
1359 | + S_GET_VALUE(symbolP->sy_forward) | |
1360 | + symbolP->sy_forward->sy_frag->fr_address)); | |
1361 | ||
1362 | if (SF_GET_GET_SEGMENT(symbolP)) { | |
1363 | S_SET_SEGMENT(symbolP, S_GET_SEGMENT(symbolP->sy_forward)); | |
1364 | } /* forward segment also */ | |
1365 | ||
1366 | symbolP->sy_forward=0; | |
1367 | } /* if it has a forward reference */ | |
1368 | } /* walk the symbol chain */ | |
1369 | ||
1370 | ||
1371 | /* The symbol list should be ordered according to the following sequence | |
1372 | * order : | |
1373 | * . .file symbol | |
1374 | * . debug entries for functions | |
1375 | * . fake symbols for the sections, including.text .data and .bss | |
1376 | * . defined symbols | |
1377 | * . undefined symbols | |
1378 | * But this is not mandatory. The only important point is to put the | |
1379 | * undefined symbols at the end of the list. | |
1380 | */ | |
23de7ff6 | 1381 | |
63c92fcd SC |
1382 | if (symbol_rootP == NULL |
1383 | || S_GET_STORAGE_CLASS(symbol_rootP) != C_FILE) { | |
1384 | c_dot_file_symbol("fake"); | |
1385 | } | |
1386 | /* Is there a .file symbol ? If not insert one at the beginning. */ | |
23de7ff6 | 1387 | |
63c92fcd SC |
1388 | /* |
1389 | * Build up static symbols for the sections, they are filled in later | |
1390 | */ | |
23de7ff6 SC |
1391 | |
1392 | ||
63c92fcd | 1393 | for (i = SEG_E0; i < SEG_E9; i++) |
23de7ff6 | 1394 | { |
63c92fcd SC |
1395 | if (segment_info[i].scnhdr.s_name[0]) |
1396 | { | |
1397 | segment_info[i].dot = | |
1398 | c_section_symbol(segment_info[i].scnhdr.s_name, | |
1399 | i-SEG_E0+1); | |
1400 | ||
1401 | } | |
23de7ff6 | 1402 | } |
23de7ff6 | 1403 | |
23de7ff6 | 1404 | |
63c92fcd SC |
1405 | /* Take all the externals out and put them into another chain */ |
1406 | headers->f_nsyms = yank_symbols(); | |
1407 | /* Take the externals and glue them onto the end.*/ | |
1408 | headers->f_nsyms += glue_symbols(); | |
23de7ff6 | 1409 | |
63c92fcd SC |
1410 | headers->f_nsyms = tie_tags(); |
1411 | know(symbol_externP == NULL); | |
1412 | know(symbol_extern_lastP == NULL); | |
23de7ff6 | 1413 | |
63c92fcd | 1414 | return; |
23de7ff6 SC |
1415 | } |
1416 | ||
1417 | /* | |
1418 | * Find strings by crawling along symbol table chain. | |
1419 | */ | |
1420 | ||
1421 | w_strings(where) | |
1422 | char *where; | |
1423 | { | |
1424 | symbolS *symbolP; | |
1425 | ||
1426 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ | |
1427 | md_number_to_chars(where, string_byte_count, sizeof(string_byte_count)); | |
1428 | where += sizeof(string_byte_count); | |
1429 | for (symbolP = symbol_rootP; | |
1430 | symbolP; | |
1431 | symbolP = symbol_next(symbolP)) | |
1432 | { | |
1433 | unsigned int size; | |
1434 | ||
1435 | if (SF_GET_STRING(symbolP)) { | |
1436 | size = strlen(S_GET_NAME(symbolP)) + 1; | |
1437 | ||
1438 | memcpy(where, S_GET_NAME(symbolP),size); | |
1439 | where += size; | |
1440 | ||
1441 | } | |
1442 | } | |
1443 | ||
1444 | } | |
1445 | ||
1446 | ||
23de7ff6 | 1447 | |
63c92fcd SC |
1448 | |
1449 | /* This is a copy from aout. All I do is neglect to actually build the symbol. */ | |
1450 | ||
1451 | static void obj_coff_stab(what) | |
1452 | int what; | |
1453 | { | |
1454 | char *string; | |
1455 | expressionS e; | |
1456 | int goof = 0; /* TRUE if we have aborted. */ | |
1457 | int length; | |
1458 | int saved_type = 0; | |
1459 | long longint; | |
1460 | symbolS *symbolP = 0; | |
1461 | ||
1462 | if (what == 's') { | |
1463 | string = demand_copy_C_string(&length); | |
1464 | SKIP_WHITESPACE(); | |
1465 | ||
1466 | if (*input_line_pointer == ',') { | |
1467 | input_line_pointer++; | |
1468 | } else { | |
1469 | as_bad("I need a comma after symbol's name"); | |
1470 | goof = 1; | |
1471 | } /* better be a comma */ | |
1472 | } /* skip the string */ | |
1473 | ||
1474 | /* | |
1475 | * Input_line_pointer->after ','. String->symbol name. | |
1476 | */ | |
1477 | if (!goof) { | |
1478 | if (get_absolute_expression_and_terminator(&longint) != ',') { | |
1479 | as_bad("I want a comma after the n_type expression"); | |
1480 | goof = 1; | |
1481 | input_line_pointer--; /* Backup over a non-',' char. */ | |
1482 | } /* on error */ | |
1483 | } /* no error */ | |
1484 | ||
1485 | if (!goof) { | |
1486 | if (get_absolute_expression_and_terminator(&longint) != ',') { | |
1487 | as_bad("I want a comma after the n_other expression"); | |
1488 | goof = 1; | |
1489 | input_line_pointer--; /* Backup over a non-',' char. */ | |
1490 | } /* on error */ | |
1491 | } /* no error */ | |
1492 | ||
1493 | if (!goof) { | |
1494 | get_absolute_expression(); | |
1495 | ||
1496 | if (what == 's' || what == 'n') { | |
1497 | if (*input_line_pointer != ',') { | |
1498 | as_bad("I want a comma after the n_desc expression"); | |
1499 | goof = 1; | |
1500 | } else { | |
1501 | input_line_pointer++; | |
1502 | } /* on goof */ | |
1503 | } /* not stabd */ | |
1504 | } /* no error */ | |
1505 | ||
1506 | expression(&e); | |
1507 | ||
1508 | if (goof) { | |
1509 | ignore_rest_of_line(); | |
1510 | } else { | |
1511 | demand_empty_rest_of_line(); | |
1512 | } /* on error */ | |
1513 | } /* obj_coff_stab() */ | |
1514 | ||
1515 | ||
23de7ff6 SC |
1516 | static void |
1517 | DEFUN(do_linenos_for,(abfd, file_cursor), | |
1518 | bfd *abfd AND | |
1519 | unsigned long *file_cursor) | |
1520 | { | |
1521 | unsigned int idx; | |
1522 | ||
1523 | for (idx = SEG_E0; idx < SEG_E9; idx++) | |
1524 | { | |
1525 | segment_info_type *s = segment_info + idx; | |
1526 | ||
1527 | if (s->scnhdr.s_nlnno != 0) | |
1528 | { | |
1529 | struct lineno_list *line_ptr ; | |
1530 | ||
1531 | struct external_lineno *buffer = | |
1532 | (struct external_lineno *)alloca(s->scnhdr.s_nlnno * LINESZ); | |
1533 | ||
1534 | struct external_lineno *dst= buffer; | |
1535 | ||
1536 | /* Run through the table we've built and turn it into its external | |
1537 | form */ | |
1538 | ||
1539 | for (line_ptr = s->lineno_list_head; | |
1540 | line_ptr != (struct lineno_list *)NULL; | |
1541 | line_ptr = line_ptr->next) | |
1542 | { | |
1543 | if (line_ptr->line.l_lnno == 0) | |
1544 | { | |
1545 | /* Turn a pointer to a symbol into the symbols' index */ | |
1546 | line_ptr->line.l_addr.l_symndx = | |
1547 | ( (symbolS *)line_ptr->line.l_addr.l_symndx)->sy_number; | |
1548 | } | |
1549 | (void) bfd_coff_swap_lineno_out(abfd, &(line_ptr->line), dst); | |
1550 | dst++; | |
1551 | } | |
1552 | ||
1553 | s->scnhdr.s_lnnoptr = *file_cursor; | |
1554 | ||
1555 | bfd_write(buffer, 1, s->scnhdr.s_nlnno* LINESZ, abfd); | |
1556 | *file_cursor += s->scnhdr.s_nlnno * LINESZ; | |
1557 | } | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Local Variables: | |
1563 | * comment-column: 0 | |
1564 | * fill-column: 131 | |
1565 | * End: | |
1566 | */ | |
1567 | ||
1568 | /* end of obj-coff.c */ | |
f714e310 SC |
1569 | /* Now we run through the list of frag chains in a segment and |
1570 | make all the subsegment frags appear at the end of the | |
1571 | list, as if the seg 0 was extra long */ | |
23de7ff6 | 1572 | |
f714e310 SC |
1573 | static void DEFUN_VOID(remove_subsegs) |
1574 | { | |
1575 | unsigned int i; | |
1576 | ||
1577 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1578 | { | |
1579 | frchainS *head = segment_info[i].frchainP; | |
1580 | fragS dummy; | |
1581 | fragS * prev_frag = &dummy; | |
1582 | ||
1583 | while (head && head->frch_seg == i) | |
1584 | { | |
1585 | prev_frag->fr_next = head->frch_root; | |
1586 | prev_frag = head->frch_last; | |
1587 | head = head->frch_next; | |
1588 | } | |
1589 | prev_frag->fr_next = 0; | |
1590 | } | |
1591 | } | |
23de7ff6 SC |
1592 | |
1593 | ||
1594 | extern void DEFUN_VOID(write_object_file) | |
1595 | { | |
f714e310 SC |
1596 | int i; |
1597 | struct frchain *frchain_ptr; | |
1598 | struct frag *frag_ptr; | |
1599 | struct internal_filehdr filehdr; | |
1600 | struct internal_aouthdr aouthdr; | |
1601 | unsigned long file_cursor; | |
1602 | bfd *abfd; | |
63c92fcd | 1603 | unsigned int addr = 0; |
f714e310 | 1604 | abfd = bfd_openw(out_file_name, TARGET_FORMAT); |
23de7ff6 | 1605 | |
63c92fcd | 1606 | |
f714e310 SC |
1607 | if (abfd == 0) { |
1608 | as_perror ("FATAL: Can't create %s", out_file_name); | |
1609 | exit(42); | |
1610 | } | |
1611 | bfd_set_format(abfd, bfd_object); | |
63c92fcd SC |
1612 | bfd_set_arch_mach(abfd, BFD_ARCH, 0); |
1613 | ||
23de7ff6 SC |
1614 | |
1615 | ||
f714e310 | 1616 | string_byte_count = 4; |
23de7ff6 | 1617 | |
f714e310 SC |
1618 | for (frchain_ptr = frchain_root; |
1619 | frchain_ptr != (struct frchain *)NULL; | |
1620 | frchain_ptr = frchain_ptr->frch_next) { | |
1621 | /* Run through all the sub-segments and align them up. Also close any | |
1622 | open frags. We tack a .fill onto the end of the frag chain so | |
1623 | that any .align's size can be worked by looking at the next | |
1624 | frag */ | |
1625 | ||
1626 | subseg_new(frchain_ptr->frch_seg, frchain_ptr->frch_subseg); | |
1627 | #define SUB_SEGMENT_ALIGN 1 | |
1628 | frag_align(SUB_SEGMENT_ALIGN,0); | |
1629 | frag_wane(frag_now); | |
1630 | frag_now->fr_fix = 0; | |
1631 | know( frag_now->fr_next == NULL ); | |
1632 | } | |
23de7ff6 | 1633 | |
23de7ff6 | 1634 | |
f714e310 SC |
1635 | remove_subsegs(); |
1636 | ||
63c92fcd | 1637 | |
f714e310 SC |
1638 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
1639 | { | |
1640 | relax_segment(segment_info[i].frchainP->frch_root, i); | |
23de7ff6 SC |
1641 | } |
1642 | ||
23de7ff6 | 1643 | |
63c92fcd SC |
1644 | |
1645 | ||
1646 | ||
f714e310 SC |
1647 | filehdr.f_nscns = 0; |
1648 | ||
1649 | /* Find out how big the sections are */ | |
1650 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) | |
1651 | { | |
23de7ff6 | 1652 | |
f714e310 SC |
1653 | if (segment_info[i].scnhdr.s_name[0]) |
1654 | { | |
1655 | filehdr.f_nscns++; | |
1656 | } | |
1657 | segment_info[i].scnhdr.s_paddr = addr; | |
1658 | if (i == SEG_E2) { | |
1659 | /* THis is a special case, we leave the size alone, which will have */ | |
1660 | /* been made up from all and any lcomms seen */ | |
f714e310 SC |
1661 | } |
1662 | else { | |
1663 | addr += size_section(abfd, i); | |
1664 | } | |
23de7ff6 | 1665 | } |
63c92fcd SC |
1666 | |
1667 | ||
23de7ff6 | 1668 | |
f714e310 | 1669 | /* Turn the gas native symbol table shape into a coff symbol table */ |
63c92fcd | 1670 | crawl_symbols(&filehdr, abfd); |
23de7ff6 | 1671 | |
63c92fcd SC |
1672 | for (i = SEG_E0; i < SEG_UNKNOWN; i++) |
1673 | { | |
1674 | fixup_segment(segment_info[i].fix_root, i); | |
1675 | } | |
23de7ff6 | 1676 | |
63c92fcd | 1677 | file_cursor = FILHSZ + SCNHSZ * filehdr.f_nscns ; |
23de7ff6 | 1678 | |
63c92fcd | 1679 | bfd_seek(abfd, file_cursor, 0); |
23de7ff6 SC |
1680 | |
1681 | ||
63c92fcd | 1682 | do_relocs_for(abfd, &file_cursor); |
23de7ff6 | 1683 | |
63c92fcd | 1684 | do_linenos_for(abfd, &file_cursor); |
23de7ff6 | 1685 | |
23de7ff6 | 1686 | |
63c92fcd | 1687 | /* Plant the data */ |
23de7ff6 | 1688 | |
63c92fcd | 1689 | fill_section(abfd,&filehdr, &file_cursor); |
23de7ff6 | 1690 | |
63c92fcd SC |
1691 | filehdr.f_magic = COFF_MAGIC; |
1692 | filehdr.f_timdat = 0; | |
1693 | filehdr.f_flags = 0; | |
23de7ff6 | 1694 | |
23de7ff6 | 1695 | |
23de7ff6 | 1696 | |
63c92fcd SC |
1697 | { |
1698 | ||
1699 | unsigned int symtable_size = filehdr.f_nsyms * SYMESZ; | |
1700 | char *buffer1 = alloca(symtable_size); | |
1701 | char *buffer2 = alloca(string_byte_count+4); | |
1702 | char *ptr = buffer1; | |
1703 | filehdr.f_symptr = bfd_tell(abfd); | |
1704 | w_symbols(abfd,&buffer1, symbol_rootP); | |
1705 | bfd_write(ptr, 1, symtable_size, abfd); | |
23de7ff6 | 1706 | |
63c92fcd SC |
1707 | w_strings(buffer2); |
1708 | bfd_write(buffer2, 1, string_byte_count, abfd); | |
1709 | ||
1710 | } | |
1711 | coff_header_append(abfd, &filehdr, &aouthdr); | |
1712 | ||
1713 | bfd_close_all_done(abfd); | |
23de7ff6 SC |
1714 | } |
1715 | ||
1716 | ||
f714e310 | 1717 | static void DEFUN(change_to_section,(name, len, exp), |
23de7ff6 | 1718 | char *name AND |
f714e310 SC |
1719 | unsigned int len AND |
1720 | unsigned int exp) | |
23de7ff6 SC |
1721 | { |
1722 | unsigned int i; | |
1723 | /* Find out if we've already got a section of this name etc */ | |
1724 | for(i = SEG_E0; i < SEG_E9 && segment_info[i].scnhdr.s_name[0] ; i++) | |
1725 | { | |
1726 | if (strncmp(segment_info[i].scnhdr.s_name, name, len) == 0) | |
1727 | { | |
f714e310 | 1728 | subseg_new(i, exp); |
23de7ff6 SC |
1729 | return; |
1730 | ||
1731 | } | |
1732 | } | |
1733 | /* No section, add one */ | |
1734 | strncpy(segment_info[i].scnhdr.s_name, name, 8); | |
f714e310 | 1735 | subseg_new(i, exp); |
23de7ff6 SC |
1736 | } |
1737 | ||
1738 | static void | |
1739 | DEFUN_VOID(obj_coff_section) | |
1740 | { | |
f714e310 SC |
1741 | /* Strip out the section name */ |
1742 | char *section_name ; | |
1743 | char *section_name_end; | |
1744 | char c; | |
1745 | ||
1746 | unsigned int len; | |
1747 | unsigned int exp; | |
23de7ff6 | 1748 | |
f714e310 SC |
1749 | section_name = input_line_pointer; |
1750 | c = get_symbol_end(); | |
1751 | section_name_end = input_line_pointer; | |
1752 | ||
1753 | len = section_name_end - section_name ; | |
1754 | input_line_pointer++; | |
1755 | SKIP_WHITESPACE(); | |
1756 | if (c == ',') | |
1757 | { | |
1758 | exp = get_absolute_expression(); | |
1759 | } | |
1760 | else if ( *input_line_pointer == ',') | |
1761 | { | |
1762 | ||
1763 | input_line_pointer++; | |
1764 | exp = get_absolute_expression(); | |
1765 | } | |
1766 | else | |
1767 | { | |
1768 | exp = 0; | |
1769 | } | |
23de7ff6 | 1770 | |
f714e310 | 1771 | change_to_section(section_name, len,exp); |
23de7ff6 SC |
1772 | |
1773 | } | |
1774 | ||
1775 | ||
1776 | static void obj_coff_text() | |
1777 | { | |
f714e310 | 1778 | change_to_section(".text",5, get_absolute_expression()); |
23de7ff6 SC |
1779 | } |
1780 | ||
1781 | ||
1782 | static void obj_coff_data() | |
1783 | { | |
f714e310 | 1784 | change_to_section(".data",5, get_absolute_expression()); |
23de7ff6 SC |
1785 | } |
1786 | ||
1787 | void c_symbol_merge(debug, normal) | |
1788 | symbolS *debug; | |
1789 | symbolS *normal; | |
1790 | { | |
1791 | S_SET_DATA_TYPE(normal, S_GET_DATA_TYPE(debug)); | |
1792 | S_SET_STORAGE_CLASS(normal, S_GET_STORAGE_CLASS(debug)); | |
1793 | ||
1794 | if (S_GET_NUMBER_AUXILIARY(debug) > S_GET_NUMBER_AUXILIARY(normal)) { | |
1795 | S_SET_NUMBER_AUXILIARY(normal, S_GET_NUMBER_AUXILIARY(debug)); | |
1796 | } /* take the most we have */ | |
1797 | ||
1798 | if (S_GET_NUMBER_AUXILIARY(debug) > 0) { | |
1799 | memcpy((char*)&normal->sy_symbol.ost_auxent[0], (char*)&debug->sy_symbol.ost_auxent[0], S_GET_NUMBER_AUXILIARY(debug) * AUXESZ); | |
1800 | } /* Move all the auxiliary information */ | |
1801 | ||
1802 | /* Move the debug flags. */ | |
1803 | SF_SET_DEBUG_FIELD(normal, SF_GET_DEBUG_FIELD(debug)); | |
1804 | } /* c_symbol_merge() */ | |
1805 | ||
1806 | int | |
1807 | c_line_new(symbol, paddr, line_number, frag) | |
1808 | symbolS *symbol; | |
1809 | long paddr; | |
1810 | unsigned short line_number; | |
1811 | fragS* frag; | |
1812 | { | |
1813 | struct lineno_list* new_line = | |
1814 | (struct lineno_list *)xmalloc(sizeof(struct lineno_list)); | |
1815 | ||
1816 | segment_info_type *s = segment_info + now_seg; | |
1817 | new_line->line.l_lnno = line_number; | |
1818 | if (line_number == 0) | |
1819 | { | |
1820 | new_line->line.l_addr.l_symndx = (long)symbol; | |
1821 | } | |
1822 | else | |
1823 | { | |
1824 | new_line->line.l_addr.l_paddr = paddr; | |
1825 | } | |
1826 | ||
1827 | new_line->frag = (char*)frag; | |
1828 | new_line->next = (struct lineno_list*)NULL; | |
1829 | ||
1830 | ||
1831 | if (s->lineno_list_head == (struct lineno_list *)NULL) | |
1832 | { | |
1833 | s->lineno_list_head = new_line; | |
1834 | } | |
1835 | else | |
1836 | { | |
1837 | s->lineno_list_tail->next = new_line; | |
1838 | } | |
1839 | s->lineno_list_tail = new_line; | |
1840 | return LINESZ * s->scnhdr.s_nlnno ++; | |
1841 | } | |
1842 | ||
1843 | void c_dot_file_symbol(filename) | |
1844 | char *filename; | |
1845 | { | |
1846 | symbolS* symbolP; | |
1847 | ||
1848 | symbolP = symbol_new(".file", | |
1849 | SEG_DEBUG, | |
1850 | 0, | |
1851 | &zero_address_frag); | |
1852 | ||
1853 | S_SET_STORAGE_CLASS(symbolP, C_FILE); | |
1854 | S_SET_NUMBER_AUXILIARY(symbolP, 1); | |
1855 | SA_SET_FILE_FNAME(symbolP, filename); | |
1856 | SF_SET_DEBUG(symbolP); | |
1857 | S_SET_VALUE(symbolP, (long) previous_file_symbol); | |
1858 | ||
1859 | previous_file_symbol = symbolP; | |
1860 | ||
1861 | /* Make sure that the symbol is first on the symbol chain */ | |
1862 | if (symbol_rootP != symbolP) { | |
1863 | if (symbolP == symbol_lastP) { | |
1864 | symbol_lastP = symbol_lastP->sy_previous; | |
1865 | } /* if it was the last thing on the list */ | |
1866 | ||
1867 | symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); | |
1868 | symbol_insert(symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); | |
1869 | symbol_rootP = symbolP; | |
1870 | } /* if not first on the list */ | |
1871 | ||
1872 | } /* c_dot_file_symbol() */ | |
1873 | ||
1874 | /* | |
1875 | * Build a 'section static' symbol. | |
1876 | */ | |
1877 | ||
63c92fcd | 1878 | symbolS *c_section_symbol(name,idx) |
23de7ff6 | 1879 | char *name; |
63c92fcd | 1880 | int idx; |
23de7ff6 SC |
1881 | { |
1882 | symbolS *symbolP; | |
1883 | ||
1884 | symbolP = symbol_new(name,idx, | |
63c92fcd | 1885 | 0, |
23de7ff6 SC |
1886 | &zero_address_frag); |
1887 | ||
1888 | S_SET_STORAGE_CLASS(symbolP, C_STAT); | |
1889 | S_SET_NUMBER_AUXILIARY(symbolP, 1); | |
1890 | ||
23de7ff6 SC |
1891 | SF_SET_STATICS(symbolP); |
1892 | ||
1893 | return symbolP; | |
1894 | } /* c_section_symbol() */ | |
1895 | static void | |
1896 | DEFUN(w_symbols,(abfd, where, symbol_rootP), | |
1897 | bfd *abfd AND | |
1898 | char **where AND | |
1899 | symbolS *symbol_rootP) | |
1900 | { | |
1901 | symbolS *symbolP; | |
63c92fcd SC |
1902 | unsigned int i; |
1903 | ||
1904 | /* First fill in those values we have only just worked out */ | |
1905 | for (i = SEG_E0; i < SEG_E9; i++) | |
1906 | { | |
1907 | symbolP = segment_info[i].dot; | |
1908 | if (symbolP) | |
1909 | { | |
1910 | ||
1911 | SA_SET_SCN_SCNLEN(symbolP, segment_info[i].scnhdr.s_size); | |
1912 | SA_SET_SCN_NRELOC(symbolP, segment_info[i].scnhdr.s_nreloc); | |
1913 | SA_SET_SCN_NLINNO(symbolP, segment_info[i].scnhdr.s_nlnno); | |
1914 | ||
1915 | } | |
1916 | } | |
1917 | ||
23de7ff6 SC |
1918 | /* |
1919 | * Emit all symbols left in the symbol chain. | |
1920 | */ | |
1921 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { | |
1922 | /* Used to save the offset of the name. It is used to point | |
1923 | to the string in memory but must be a file offset. */ | |
1924 | register char * temp; | |
1925 | ||
1926 | tc_coff_symbol_emit_hook(symbolP); | |
1927 | ||
1928 | temp = S_GET_NAME(symbolP); | |
1929 | if (SF_GET_STRING(symbolP)) { | |
1930 | S_SET_OFFSET(symbolP, symbolP->sy_name_offset); | |
1931 | S_SET_ZEROES(symbolP, 0); | |
63c92fcd SC |
1932 | } else { |
1933 | bzero(symbolP->sy_symbol.ost_entry.n_name, SYMNMLEN); | |
1934 | strncpy(symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN); | |
1935 | } | |
23de7ff6 SC |
1936 | symbol_to_chars(abfd, where, symbolP); |
1937 | S_SET_NAME(symbolP,temp); | |
63c92fcd SC |
1938 | } |
1939 | } /* w_symbols() */ | |
23de7ff6 | 1940 | |
63c92fcd | 1941 | static void DEFUN_VOID(obj_coff_lcomm) |
23de7ff6 | 1942 | { |
f714e310 SC |
1943 | char *name; |
1944 | char c; | |
1945 | int temp; | |
1946 | char *p; | |
1947 | symbolS *symbolP; | |
1948 | name = input_line_pointer; | |
1949 | ||
63c92fcd SC |
1950 | |
1951 | ||
f714e310 SC |
1952 | c = get_symbol_end(); |
1953 | p = input_line_pointer; | |
1954 | *p = c; | |
1955 | SKIP_WHITESPACE(); | |
1956 | if (*input_line_pointer != ',') { | |
1957 | as_bad("Expected comma after name"); | |
1958 | ignore_rest_of_line(); | |
1959 | return; | |
23de7ff6 | 1960 | } |
f714e310 SC |
1961 | if (*input_line_pointer == '\n') { |
1962 | as_bad("Missing size expression"); | |
1963 | return; | |
23de7ff6 | 1964 | } |
f714e310 SC |
1965 | input_line_pointer++; |
1966 | if ((temp = get_absolute_expression ()) < 0) { | |
1967 | as_warn("lcomm length (%d.) <0! Ignored.", temp); | |
1968 | ignore_rest_of_line(); | |
1969 | return; | |
23de7ff6 | 1970 | } |
f714e310 SC |
1971 | *p = 0; |
1972 | symbolP = symbol_find_or_make(name); | |
1973 | S_SET_VALUE(symbolP, segment_info[SEG_E2].scnhdr.s_size); | |
1974 | S_SET_SEGMENT(symbolP, SEG_E2); | |
1975 | segment_info[SEG_E2].scnhdr.s_size += temp; | |
1976 | S_SET_STORAGE_CLASS(symbolP, C_STAT); | |
1977 | demand_empty_rest_of_line(); | |
23de7ff6 | 1978 | } |
63c92fcd SC |
1979 | |
1980 | ||
1981 | #if 1 | |
1982 | static void DEFUN(fixup_segment,(fixP, this_segment_type), | |
1983 | register fixS * fixP AND | |
1984 | segT this_segment_type) | |
1985 | { | |
1986 | register symbolS *add_symbolP; | |
1987 | register symbolS *sub_symbolP; | |
1988 | register long add_number; | |
1989 | register int size; | |
1990 | register char *place; | |
1991 | register long where; | |
1992 | register char pcrel; | |
1993 | register fragS *fragP; | |
1994 | register segT add_symbol_segment = SEG_ABSOLUTE; | |
1995 | ||
1996 | ||
1997 | for ( ; fixP; fixP = fixP->fx_next) | |
1998 | { | |
1999 | fragP = fixP->fx_frag; | |
2000 | know(fragP); | |
2001 | where = fixP->fx_where; | |
2002 | place = fragP->fr_literal + where; | |
2003 | size = fixP->fx_size; | |
2004 | add_symbolP = fixP->fx_addsy; | |
2005 | #ifdef TC_I960 | |
2006 | if (fixP->fx_callj && TC_S_IS_CALLNAME(add_symbolP)) { | |
2007 | /* Relocation should be done via the | |
2008 | associated 'bal' entry point | |
2009 | symbol. */ | |
2010 | ||
2011 | if (!TC_S_IS_BALNAME(tc_get_bal_of_call(add_symbolP))) { | |
2012 | as_bad("No 'bal' entry point for leafproc %s", | |
2013 | S_GET_NAME(add_symbolP)); | |
2014 | continue; | |
2015 | } | |
2016 | fixP->fx_addsy = add_symbolP = tc_get_bal_of_call(add_symbolP); | |
2017 | } /* callj relocation */ | |
2018 | #endif | |
2019 | sub_symbolP = fixP->fx_subsy; | |
2020 | add_number = fixP->fx_offset; | |
2021 | pcrel = fixP->fx_pcrel; | |
2022 | ||
2023 | if (add_symbolP) { | |
2024 | add_symbol_segment = S_GET_SEGMENT(add_symbolP); | |
2025 | } /* if there is an addend */ | |
2026 | ||
2027 | if (sub_symbolP) { | |
2028 | if (!add_symbolP) { | |
2029 | /* Its just -sym */ | |
2030 | if (S_GET_SEGMENT(sub_symbolP) != SEG_ABSOLUTE) { | |
2031 | as_bad("Negative of non-absolute symbol %s", S_GET_NAME(sub_symbolP)); | |
2032 | } /* not absolute */ | |
2033 | ||
2034 | add_number -= S_GET_VALUE(sub_symbolP); | |
2035 | ||
2036 | /* if sub_symbol is in the same segment that add_symbol | |
2037 | and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */ | |
2038 | } else if ((S_GET_SEGMENT(sub_symbolP) == add_symbol_segment) | |
2039 | && (SEG_NORMAL(add_symbol_segment) | |
2040 | || (add_symbol_segment == SEG_ABSOLUTE))) { | |
2041 | /* Difference of 2 symbols from same segment. */ | |
2042 | /* Can't make difference of 2 undefineds: 'value' means */ | |
2043 | /* something different for N_UNDF. */ | |
2044 | #ifdef TC_I960 | |
2045 | /* Makes no sense to use the difference of 2 arbitrary symbols | |
2046 | * as the target of a call instruction. | |
2047 | */ | |
2048 | if (fixP->fx_callj) { | |
2049 | as_bad("callj to difference of 2 symbols"); | |
2050 | } | |
2051 | #endif /* TC_I960 */ | |
2052 | add_number += S_GET_VALUE(add_symbolP) - | |
2053 | S_GET_VALUE(sub_symbolP); | |
2054 | ||
2055 | add_symbolP = NULL; | |
2056 | fixP->fx_addsy = NULL; | |
2057 | } else { | |
2058 | /* Different segments in subtraction. */ | |
2059 | know(!(S_IS_EXTERNAL(sub_symbolP) && (S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE))); | |
2060 | ||
2061 | if ((S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE)) { | |
2062 | add_number -= S_GET_VALUE(sub_symbolP); | |
2063 | } else { | |
2064 | as_bad("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %d.", | |
2065 | segment_name(S_GET_SEGMENT(sub_symbolP)), | |
2066 | S_GET_NAME(sub_symbolP), fragP->fr_address + where); | |
2067 | } /* if absolute */ | |
2068 | } | |
2069 | } /* if sub_symbolP */ | |
2070 | ||
2071 | if (add_symbolP) { | |
2072 | if (add_symbol_segment == this_segment_type && pcrel) { | |
2073 | /* | |
2074 | * This fixup was made when the symbol's segment was | |
2075 | * SEG_UNKNOWN, but it is now in the local segment. | |
2076 | * So we know how to do the address without relocation. | |
2077 | */ | |
2078 | #ifdef TC_I960 | |
2079 | /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', | |
2080 | * in which cases it modifies *fixP as appropriate. In the case | |
2081 | * of a 'calls', no further work is required, and *fixP has been | |
2082 | * set up to make the rest of the code below a no-op. | |
2083 | */ | |
2084 | reloc_callj(fixP); | |
2085 | #endif /* TC_I960 */ | |
2086 | ||
2087 | add_number += S_GET_VALUE(add_symbolP); | |
2088 | add_number -= md_pcrel_from (fixP); | |
2089 | pcrel = 0; /* Lie. Don't want further pcrel processing. */ | |
2090 | fixP->fx_addsy = NULL; /* No relocations please. */ | |
2091 | } else | |
2092 | { | |
2093 | switch (add_symbol_segment) | |
2094 | { | |
2095 | case SEG_ABSOLUTE: | |
2096 | #ifdef TC_I960 | |
2097 | reloc_callj(fixP); /* See comment about reloc_callj() above*/ | |
2098 | #endif /* TC_I960 */ | |
2099 | add_number += S_GET_VALUE(add_symbolP); | |
2100 | fixP->fx_addsy = NULL; | |
2101 | add_symbolP = NULL; | |
2102 | break; | |
2103 | default: | |
2104 | ||
2105 | add_number += S_GET_VALUE(add_symbolP) + | |
2106 | segment_info[S_GET_SEGMENT(add_symbolP)].scnhdr.s_paddr ; | |
2107 | break; | |
2108 | ||
2109 | case SEG_UNKNOWN: | |
2110 | #ifdef TC_I960 | |
2111 | if ((int)fixP->fx_bit_fixP == 13) { | |
2112 | /* This is a COBR instruction. They have only a | |
2113 | * 13-bit displacement and are only to be used | |
2114 | * for local branches: flag as error, don't generate | |
2115 | * relocation. | |
2116 | */ | |
2117 | as_bad("can't use COBR format with external label"); | |
2118 | fixP->fx_addsy = NULL; /* No relocations please. */ | |
2119 | continue; | |
2120 | } /* COBR */ | |
2121 | #endif /* TC_I960 */ | |
2122 | ||
2123 | ||
2124 | ||
2125 | break; | |
2126 | ||
2127 | ||
2128 | } /* switch on symbol seg */ | |
2129 | } /* if not in local seg */ | |
2130 | } /* if there was a + symbol */ | |
2131 | ||
2132 | if (pcrel) { | |
2133 | add_number -= md_pcrel_from(fixP); | |
2134 | if (add_symbolP == 0) { | |
2135 | fixP->fx_addsy = & abs_symbol; | |
2136 | } /* if there's an add_symbol */ | |
2137 | } /* if pcrel */ | |
2138 | ||
2139 | if (!fixP->fx_bit_fixP) { | |
2140 | if ((size==1 && | |
2141 | (add_number& ~0xFF) && (add_number&~0xFF!=(-1&~0xFF))) || | |
2142 | (size==2 && | |
2143 | (add_number& ~0xFFFF) && (add_number&~0xFFFF!=(-1&~0xFFFF)))) { | |
2144 | as_bad("Value of %d too large for field of %d bytes at 0x%x", | |
2145 | add_number, size, fragP->fr_address + where); | |
2146 | } /* generic error checking */ | |
2147 | } /* not a bit fix */ | |
2148 | /* once this fix has been applied, we don't have to output anything | |
2149 | nothing more need be done -*/ | |
2150 | md_apply_fix(fixP, add_number); | |
2151 | ||
2152 | } /* For each fixS in this segment. */ | |
2153 | ||
2154 | ||
2155 | } /* fixup_segment() */ | |
2156 | #endif | |
2157 | ||
2158 | ||
2159 |