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252b5132 RH |
1 | /* a.out object file format |
2 | Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as | |
9 | published by the Free Software Foundation; either version 2, | |
10 | or (at your option) any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | the GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public | |
18 | License along with GAS; see the file COPYING. If not, write | |
19 | to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "as.h" | |
22 | #ifdef BFD_ASSEMBLER | |
23 | #undef NO_RELOC | |
24 | #include "aout/aout64.h" | |
25 | #endif | |
26 | #include "obstack.h" | |
27 | ||
28 | #ifndef BFD_ASSEMBLER | |
29 | /* in: segT out: N_TYPE bits */ | |
30 | const short seg_N_TYPE[] = | |
31 | { | |
32 | N_ABS, | |
33 | N_TEXT, | |
34 | N_DATA, | |
35 | N_BSS, | |
36 | N_UNDF, /* unknown */ | |
37 | N_UNDF, /* error */ | |
38 | N_UNDF, /* expression */ | |
39 | N_UNDF, /* debug */ | |
40 | N_UNDF, /* ntv */ | |
41 | N_UNDF, /* ptv */ | |
42 | N_REGISTER, /* register */ | |
43 | }; | |
44 | ||
45 | const segT N_TYPE_seg[N_TYPE + 2] = | |
46 | { /* N_TYPE == 0x1E = 32-2 */ | |
47 | SEG_UNKNOWN, /* N_UNDF == 0 */ | |
48 | SEG_GOOF, | |
49 | SEG_ABSOLUTE, /* N_ABS == 2 */ | |
50 | SEG_GOOF, | |
51 | SEG_TEXT, /* N_TEXT == 4 */ | |
52 | SEG_GOOF, | |
53 | SEG_DATA, /* N_DATA == 6 */ | |
54 | SEG_GOOF, | |
55 | SEG_BSS, /* N_BSS == 8 */ | |
56 | SEG_GOOF, | |
57 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
58 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
59 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
60 | SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ | |
61 | SEG_GOOF, | |
62 | }; | |
63 | #endif | |
64 | ||
65 | static void obj_aout_line PARAMS ((int)); | |
66 | static void obj_aout_weak PARAMS ((int)); | |
67 | static void obj_aout_type PARAMS ((int)); | |
68 | ||
69 | const pseudo_typeS obj_pseudo_table[] = | |
70 | { | |
71 | {"line", obj_aout_line, 0}, /* source code line number */ | |
72 | {"ln", obj_aout_line, 0}, /* coff line number that we use anyway */ | |
73 | ||
74 | {"weak", obj_aout_weak, 0}, /* mark symbol as weak. */ | |
75 | ||
76 | {"type", obj_aout_type, 0}, | |
77 | ||
78 | /* coff debug pseudos (ignored) */ | |
79 | {"def", s_ignore, 0}, | |
80 | {"dim", s_ignore, 0}, | |
81 | {"endef", s_ignore, 0}, | |
82 | {"ident", s_ignore, 0}, | |
83 | {"line", s_ignore, 0}, | |
84 | {"ln", s_ignore, 0}, | |
85 | {"scl", s_ignore, 0}, | |
86 | {"size", s_ignore, 0}, | |
87 | {"tag", s_ignore, 0}, | |
88 | {"val", s_ignore, 0}, | |
89 | {"version", s_ignore, 0}, | |
90 | ||
91 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
92 | ||
93 | /* other stuff */ | |
94 | {"ABORT", s_abort, 0}, | |
95 | ||
96 | {NULL} /* end sentinel */ | |
97 | }; /* obj_pseudo_table */ | |
98 | ||
99 | ||
100 | #ifdef BFD_ASSEMBLER | |
101 | ||
102 | void | |
103 | obj_aout_frob_symbol (sym, punt) | |
104 | symbolS *sym; | |
105 | int *punt; | |
106 | { | |
107 | flagword flags; | |
108 | asection *sec; | |
109 | int desc, type, other; | |
110 | ||
111 | flags = sym->bsym->flags; | |
112 | desc = S_GET_DESC (sym); | |
113 | type = S_GET_TYPE (sym); | |
114 | other = S_GET_OTHER (sym); | |
115 | sec = sym->bsym->section; | |
116 | ||
117 | /* Only frob simple symbols this way right now. */ | |
118 | if (! (type & ~ (N_TYPE | N_EXT))) | |
119 | { | |
120 | if (type == (N_UNDF | N_EXT) | |
121 | && sec == &bfd_abs_section) | |
122 | sym->bsym->section = sec = bfd_und_section_ptr; | |
123 | ||
124 | if ((type & N_TYPE) != N_INDR | |
125 | && (type & N_TYPE) != N_SETA | |
126 | && (type & N_TYPE) != N_SETT | |
127 | && (type & N_TYPE) != N_SETD | |
128 | && (type & N_TYPE) != N_SETB | |
129 | && type != N_WARNING | |
130 | && (sec == &bfd_abs_section | |
131 | || sec == &bfd_und_section)) | |
132 | return; | |
133 | if (flags & BSF_EXPORT) | |
134 | type |= N_EXT; | |
135 | ||
136 | switch (type & N_TYPE) | |
137 | { | |
138 | case N_SETA: | |
139 | case N_SETT: | |
140 | case N_SETD: | |
141 | case N_SETB: | |
142 | /* Set the debugging flag for constructor symbols so that | |
143 | BFD leaves them alone. */ | |
144 | sym->bsym->flags |= BSF_DEBUGGING; | |
145 | ||
146 | /* You can't put a common symbol in a set. The way a set | |
147 | element works is that the symbol has a definition and a | |
148 | name, and the linker adds the definition to the set of | |
149 | that name. That does not work for a common symbol, | |
150 | because the linker can't tell which common symbol the | |
151 | user means. FIXME: Using as_bad here may be | |
152 | inappropriate, since the user may want to force a | |
153 | particular type without regard to the semantics of sets; | |
154 | on the other hand, we certainly don't want anybody to be | |
155 | mislead into thinking that their code will work. */ | |
156 | if (S_IS_COMMON (sym)) | |
157 | as_bad (_("Attempt to put a common symbol into set %s"), | |
158 | S_GET_NAME (sym)); | |
159 | /* Similarly, you can't put an undefined symbol in a set. */ | |
160 | else if (! S_IS_DEFINED (sym)) | |
161 | as_bad (_("Attempt to put an undefined symbol into set %s"), | |
162 | S_GET_NAME (sym)); | |
163 | ||
164 | break; | |
165 | case N_INDR: | |
166 | /* Put indirect symbols in the indirect section. */ | |
167 | sym->bsym->section = bfd_ind_section_ptr; | |
168 | sym->bsym->flags |= BSF_INDIRECT; | |
169 | if (type & N_EXT) | |
170 | { | |
171 | sym->bsym->flags |= BSF_EXPORT; | |
172 | sym->bsym->flags &=~ BSF_LOCAL; | |
173 | } | |
174 | break; | |
175 | case N_WARNING: | |
176 | /* Mark warning symbols. */ | |
177 | sym->bsym->flags |= BSF_WARNING; | |
178 | break; | |
179 | } | |
180 | } | |
181 | else | |
182 | { | |
183 | sym->bsym->flags |= BSF_DEBUGGING; | |
184 | } | |
185 | ||
186 | S_SET_TYPE (sym, type); | |
187 | ||
188 | /* Double check weak symbols. */ | |
189 | if (sym->bsym->flags & BSF_WEAK) | |
190 | { | |
191 | if (S_IS_COMMON (sym)) | |
192 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
193 | S_GET_NAME (sym)); | |
194 | } | |
195 | } | |
196 | ||
197 | void | |
198 | obj_aout_frob_file () | |
199 | { | |
200 | /* Relocation processing may require knowing the VMAs of the sections. | |
201 | Since writing to a section will cause the BFD back end to compute the | |
202 | VMAs, fake it out here.... */ | |
203 | bfd_byte b = 0; | |
204 | boolean x = true; | |
205 | if (bfd_section_size (stdoutput, text_section) != 0) | |
206 | { | |
207 | x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0, | |
208 | (bfd_size_type) 1); | |
209 | } | |
210 | else if (bfd_section_size (stdoutput, data_section) != 0) | |
211 | { | |
212 | x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0, | |
213 | (bfd_size_type) 1); | |
214 | } | |
215 | assert (x == true); | |
216 | } | |
217 | ||
218 | #else | |
219 | ||
220 | /* Relocation. */ | |
221 | ||
222 | /* | |
223 | * emit_relocations() | |
224 | * | |
225 | * Crawl along a fixS chain. Emit the segment's relocations. | |
226 | */ | |
227 | void | |
228 | obj_emit_relocations (where, fixP, segment_address_in_file) | |
229 | char **where; | |
230 | fixS *fixP; /* Fixup chain for this segment. */ | |
231 | relax_addressT segment_address_in_file; | |
232 | { | |
233 | for (; fixP; fixP = fixP->fx_next) | |
234 | if (fixP->fx_done == 0) | |
235 | { | |
236 | symbolS *sym; | |
237 | ||
238 | sym = fixP->fx_addsy; | |
239 | while (sym->sy_value.X_op == O_symbol | |
240 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
241 | sym = sym->sy_value.X_add_symbol; | |
242 | fixP->fx_addsy = sym; | |
243 | ||
244 | if (! sym->sy_resolved && ! S_IS_DEFINED (sym)) | |
245 | { | |
246 | char *file; | |
247 | unsigned int line; | |
248 | ||
249 | if (expr_symbol_where (sym, &file, &line)) | |
250 | as_bad_where (file, line, _("unresolved relocation")); | |
251 | else | |
252 | as_bad (_("bad relocation: symbol `%s' not in symbol table"), | |
253 | S_GET_NAME (sym)); | |
254 | } | |
255 | ||
256 | tc_aout_fix_to_chars (*where, fixP, segment_address_in_file); | |
257 | *where += md_reloc_size; | |
258 | } | |
259 | } | |
260 | ||
261 | #ifndef obj_header_append | |
262 | /* Aout file generation & utilities */ | |
263 | void | |
264 | obj_header_append (where, headers) | |
265 | char **where; | |
266 | object_headers *headers; | |
267 | { | |
268 | tc_headers_hook (headers); | |
269 | ||
270 | #ifdef CROSS_COMPILE | |
271 | md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info)); | |
272 | *where += sizeof (headers->header.a_info); | |
273 | md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text)); | |
274 | *where += sizeof (headers->header.a_text); | |
275 | md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data)); | |
276 | *where += sizeof (headers->header.a_data); | |
277 | md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss)); | |
278 | *where += sizeof (headers->header.a_bss); | |
279 | md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms)); | |
280 | *where += sizeof (headers->header.a_syms); | |
281 | md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry)); | |
282 | *where += sizeof (headers->header.a_entry); | |
283 | md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize)); | |
284 | *where += sizeof (headers->header.a_trsize); | |
285 | md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize)); | |
286 | *where += sizeof (headers->header.a_drsize); | |
287 | ||
288 | #else /* CROSS_COMPILE */ | |
289 | ||
290 | append (where, (char *) &headers->header, sizeof (headers->header)); | |
291 | #endif /* CROSS_COMPILE */ | |
292 | ||
293 | } | |
294 | #endif | |
295 | ||
296 | void | |
297 | obj_symbol_to_chars (where, symbolP) | |
298 | char **where; | |
299 | symbolS *symbolP; | |
300 | { | |
301 | md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP))); | |
302 | md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP))); | |
303 | md_number_to_chars ((char *) &(symbolP->sy_symbol.n_value), S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value)); | |
304 | ||
305 | append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type)); | |
306 | } | |
307 | ||
308 | void | |
309 | obj_emit_symbols (where, symbol_rootP) | |
310 | char **where; | |
311 | symbolS *symbol_rootP; | |
312 | { | |
313 | symbolS *symbolP; | |
314 | ||
315 | /* Emit all symbols left in the symbol chain. */ | |
316 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
317 | { | |
318 | /* Used to save the offset of the name. It is used to point | |
319 | to the string in memory but must be a file offset. */ | |
320 | register char *temp; | |
321 | ||
322 | temp = S_GET_NAME (symbolP); | |
323 | S_SET_OFFSET (symbolP, symbolP->sy_name_offset); | |
324 | ||
325 | /* Any symbol still undefined and is not a dbg symbol is made N_EXT. */ | |
326 | if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP)) | |
327 | S_SET_EXTERNAL (symbolP); | |
328 | ||
329 | /* Adjust the type of a weak symbol. */ | |
330 | if (S_GET_WEAK (symbolP)) | |
331 | { | |
332 | switch (S_GET_TYPE (symbolP)) | |
333 | { | |
334 | case N_UNDF: S_SET_TYPE (symbolP, N_WEAKU); break; | |
335 | case N_ABS: S_SET_TYPE (symbolP, N_WEAKA); break; | |
336 | case N_TEXT: S_SET_TYPE (symbolP, N_WEAKT); break; | |
337 | case N_DATA: S_SET_TYPE (symbolP, N_WEAKD); break; | |
338 | case N_BSS: S_SET_TYPE (symbolP, N_WEAKB); break; | |
339 | default: as_bad (_("%s: bad type for weak symbol"), temp); break; | |
340 | } | |
341 | } | |
342 | ||
343 | obj_symbol_to_chars (where, symbolP); | |
344 | S_SET_NAME (symbolP, temp); | |
345 | } | |
346 | } | |
347 | ||
348 | #endif /* ! BFD_ASSEMBLER */ | |
349 | ||
350 | static void | |
351 | obj_aout_line (ignore) | |
352 | int ignore; | |
353 | { | |
354 | /* Assume delimiter is part of expression. | |
355 | BSD4.2 as fails with delightful bug, so we | |
356 | are not being incompatible here. */ | |
357 | new_logical_line ((char *) NULL, (int) (get_absolute_expression ())); | |
358 | demand_empty_rest_of_line (); | |
359 | } /* obj_aout_line() */ | |
360 | ||
361 | /* Handle .weak. This is a GNU extension. */ | |
362 | ||
363 | static void | |
364 | obj_aout_weak (ignore) | |
365 | int ignore; | |
366 | { | |
367 | char *name; | |
368 | int c; | |
369 | symbolS *symbolP; | |
370 | ||
371 | do | |
372 | { | |
373 | name = input_line_pointer; | |
374 | c = get_symbol_end (); | |
375 | symbolP = symbol_find_or_make (name); | |
376 | *input_line_pointer = c; | |
377 | SKIP_WHITESPACE (); | |
378 | S_SET_WEAK (symbolP); | |
379 | if (c == ',') | |
380 | { | |
381 | input_line_pointer++; | |
382 | SKIP_WHITESPACE (); | |
383 | if (*input_line_pointer == '\n') | |
384 | c = '\n'; | |
385 | } | |
386 | } | |
387 | while (c == ','); | |
388 | demand_empty_rest_of_line (); | |
389 | } | |
390 | ||
391 | /* Handle .type. On {Net,Open}BSD, this is used to set the n_other field, | |
392 | which is then apparently used when doing dynamic linking. Older | |
393 | versions ogas ignored the .type pseudo-op, so we also ignore it if | |
394 | we can't parse it. */ | |
395 | ||
396 | static void | |
397 | obj_aout_type (ignore) | |
398 | int ignore; | |
399 | { | |
400 | char *name; | |
401 | int c; | |
402 | symbolS *sym; | |
403 | ||
404 | name = input_line_pointer; | |
405 | c = get_symbol_end (); | |
406 | sym = symbol_find (name); | |
407 | *input_line_pointer = c; | |
408 | if (sym != NULL) | |
409 | { | |
410 | SKIP_WHITESPACE (); | |
411 | if (*input_line_pointer == ',') | |
412 | { | |
413 | ++input_line_pointer; | |
414 | SKIP_WHITESPACE (); | |
415 | if (*input_line_pointer == '@') | |
416 | { | |
417 | ++input_line_pointer; | |
418 | if (strncmp (input_line_pointer, "object", 6) == 0) | |
419 | S_SET_OTHER (sym, 1); | |
420 | else if (strncmp (input_line_pointer, "function", 8) == 0) | |
421 | S_SET_OTHER (sym, 2); | |
422 | } | |
423 | } | |
424 | } | |
425 | ||
426 | /* Ignore everything else on the line. */ | |
427 | s_ignore (0); | |
428 | } | |
429 | ||
430 | void | |
431 | obj_read_begin_hook () | |
432 | { | |
433 | } | |
434 | ||
435 | #ifndef BFD_ASSEMBLER | |
436 | ||
437 | void | |
438 | obj_crawl_symbol_chain (headers) | |
439 | object_headers *headers; | |
440 | { | |
441 | symbolS *symbolP; | |
442 | symbolS **symbolPP; | |
443 | int symbol_number = 0; | |
444 | ||
445 | tc_crawl_symbol_chain (headers); | |
446 | ||
447 | symbolPP = &symbol_rootP; /*->last symbol chain link. */ | |
448 | while ((symbolP = *symbolPP) != NULL) | |
449 | { | |
450 | if (symbolP->sy_mri_common) | |
451 | { | |
452 | if (S_IS_EXTERNAL (symbolP)) | |
453 | as_bad (_("%s: global symbols not supported in common sections"), | |
454 | S_GET_NAME (symbolP)); | |
455 | *symbolPP = symbol_next (symbolP); | |
456 | continue; | |
457 | } | |
458 | ||
459 | if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA)) | |
460 | { | |
461 | S_SET_SEGMENT (symbolP, SEG_TEXT); | |
462 | } /* if pusing data into text */ | |
463 | ||
464 | resolve_symbol_value (symbolP, 1); | |
465 | ||
466 | /* Skip symbols which were equated to undefined or common | |
467 | symbols. */ | |
468 | if (symbolP->sy_value.X_op == O_symbol | |
469 | && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))) | |
470 | { | |
471 | *symbolPP = symbol_next (symbolP); | |
472 | continue; | |
473 | } | |
474 | ||
475 | /* OK, here is how we decide which symbols go out into the brave | |
476 | new symtab. Symbols that do are: | |
477 | ||
478 | * symbols with no name (stabd's?) | |
479 | * symbols with debug info in their N_TYPE | |
480 | ||
481 | Symbols that don't are: | |
482 | * symbols that are registers | |
483 | * symbols with \1 as their 3rd character (numeric labels) | |
484 | * "local labels" as defined by S_LOCAL_NAME(name) if the -L | |
485 | switch was passed to gas. | |
486 | ||
487 | All other symbols are output. We complain if a deleted | |
488 | symbol was marked external. */ | |
489 | ||
490 | ||
491 | if (!S_IS_REGISTER (symbolP) | |
492 | && (!S_GET_NAME (symbolP) | |
493 | || S_IS_DEBUG (symbolP) | |
494 | || !S_IS_DEFINED (symbolP) | |
495 | || S_IS_EXTERNAL (symbolP) | |
496 | || (S_GET_NAME (symbolP)[0] != '\001' | |
497 | && (flag_keep_locals || !S_LOCAL_NAME (symbolP))))) | |
498 | { | |
499 | symbolP->sy_number = symbol_number++; | |
500 | ||
501 | /* The + 1 after strlen account for the \0 at the | |
502 | end of each string */ | |
503 | if (!S_IS_STABD (symbolP)) | |
504 | { | |
505 | /* Ordinary case. */ | |
506 | symbolP->sy_name_offset = string_byte_count; | |
507 | string_byte_count += strlen (S_GET_NAME (symbolP)) + 1; | |
508 | } | |
509 | else /* .Stabd case. */ | |
510 | symbolP->sy_name_offset = 0; | |
511 | symbolPP = &(symbol_next (symbolP)); | |
512 | } | |
513 | else | |
514 | { | |
515 | if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) | |
516 | /* This warning should never get triggered any more. | |
517 | Well, maybe if you're doing twisted things with | |
518 | register names... */ | |
519 | { | |
520 | as_bad (_("Local symbol %s never defined."), decode_local_label_name (S_GET_NAME (symbolP))); | |
521 | } /* oops. */ | |
522 | ||
523 | /* Unhook it from the chain */ | |
524 | *symbolPP = symbol_next (symbolP); | |
525 | } /* if this symbol should be in the output */ | |
526 | } /* for each symbol */ | |
527 | ||
528 | H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); | |
529 | } | |
530 | ||
531 | /* | |
532 | * Find strings by crawling along symbol table chain. | |
533 | */ | |
534 | ||
535 | void | |
536 | obj_emit_strings (where) | |
537 | char **where; | |
538 | { | |
539 | symbolS *symbolP; | |
540 | ||
541 | #ifdef CROSS_COMPILE | |
542 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ | |
543 | md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count)); | |
544 | *where += sizeof (string_byte_count); | |
545 | #else /* CROSS_COMPILE */ | |
546 | append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count)); | |
547 | #endif /* CROSS_COMPILE */ | |
548 | ||
549 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
550 | { | |
551 | if (S_GET_NAME (symbolP)) | |
552 | append (&next_object_file_charP, S_GET_NAME (symbolP), | |
553 | (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1)); | |
554 | } /* walk symbol chain */ | |
555 | } | |
556 | ||
557 | #ifndef AOUT_VERSION | |
558 | #define AOUT_VERSION 0 | |
559 | #endif | |
560 | ||
561 | void | |
562 | obj_pre_write_hook (headers) | |
563 | object_headers *headers; | |
564 | { | |
565 | H_SET_DYNAMIC (headers, 0); | |
566 | H_SET_VERSION (headers, AOUT_VERSION); | |
567 | H_SET_MACHTYPE (headers, AOUT_MACHTYPE); | |
568 | tc_aout_pre_write_hook (headers); | |
569 | } | |
570 | ||
571 | void | |
572 | DEFUN_VOID (s_sect) | |
573 | { | |
574 | /* Strip out the section name */ | |
575 | char *section_name; | |
576 | char *section_name_end; | |
577 | char c; | |
578 | ||
579 | unsigned int len; | |
580 | unsigned int exp; | |
581 | char *save; | |
582 | ||
583 | section_name = input_line_pointer; | |
584 | c = get_symbol_end (); | |
585 | section_name_end = input_line_pointer; | |
586 | ||
587 | len = section_name_end - section_name; | |
588 | input_line_pointer++; | |
589 | save = input_line_pointer; | |
590 | ||
591 | SKIP_WHITESPACE (); | |
592 | if (c == ',') | |
593 | { | |
594 | exp = get_absolute_expression (); | |
595 | } | |
596 | else if (*input_line_pointer == ',') | |
597 | { | |
598 | input_line_pointer++; | |
599 | exp = get_absolute_expression (); | |
600 | } | |
601 | else | |
602 | { | |
603 | input_line_pointer = save; | |
604 | exp = 0; | |
605 | } | |
606 | if (exp >= 1000) | |
607 | { | |
608 | as_bad (_("subsegment index too high")); | |
609 | } | |
610 | ||
611 | if (strcmp (section_name, ".text") == 0) | |
612 | { | |
613 | subseg_set (SEG_TEXT, (subsegT) exp); | |
614 | } | |
615 | ||
616 | if (strcmp (section_name, ".data") == 0) | |
617 | { | |
618 | if (flag_readonly_data_in_text) | |
619 | subseg_set (SEG_TEXT, (subsegT) exp + 1000); | |
620 | else | |
621 | subseg_set (SEG_DATA, (subsegT) exp); | |
622 | } | |
623 | ||
624 | *section_name_end = c; | |
625 | } | |
626 | ||
627 | #endif /* ! BFD_ASSEMBLER */ | |
628 | ||
629 | /* end of obj-aout.c */ |