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252b5132 | 1 | /* a.out object file format |
49309057 | 2 | Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 |
252b5132 RH |
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 | ||
49309057 ILT |
17 | You should have received a copy of the GNU General Public License |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
252b5132 RH |
21 | |
22 | #include "as.h" | |
23 | #ifdef BFD_ASSEMBLER | |
24 | #undef NO_RELOC | |
25 | #include "aout/aout64.h" | |
26 | #endif | |
27 | #include "obstack.h" | |
28 | ||
29 | #ifndef BFD_ASSEMBLER | |
30 | /* in: segT out: N_TYPE bits */ | |
31 | const short seg_N_TYPE[] = | |
32 | { | |
33 | N_ABS, | |
34 | N_TEXT, | |
35 | N_DATA, | |
36 | N_BSS, | |
37 | N_UNDF, /* unknown */ | |
38 | N_UNDF, /* error */ | |
39 | N_UNDF, /* expression */ | |
40 | N_UNDF, /* debug */ | |
41 | N_UNDF, /* ntv */ | |
42 | N_UNDF, /* ptv */ | |
43 | N_REGISTER, /* register */ | |
44 | }; | |
45 | ||
46 | const segT N_TYPE_seg[N_TYPE + 2] = | |
47 | { /* N_TYPE == 0x1E = 32-2 */ | |
48 | SEG_UNKNOWN, /* N_UNDF == 0 */ | |
49 | SEG_GOOF, | |
50 | SEG_ABSOLUTE, /* N_ABS == 2 */ | |
51 | SEG_GOOF, | |
52 | SEG_TEXT, /* N_TEXT == 4 */ | |
53 | SEG_GOOF, | |
54 | SEG_DATA, /* N_DATA == 6 */ | |
55 | SEG_GOOF, | |
56 | SEG_BSS, /* N_BSS == 8 */ | |
57 | 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, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
60 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
61 | SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ | |
62 | SEG_GOOF, | |
63 | }; | |
64 | #endif | |
65 | ||
66 | static void obj_aout_line PARAMS ((int)); | |
67 | static void obj_aout_weak PARAMS ((int)); | |
68 | static void obj_aout_type PARAMS ((int)); | |
69 | ||
70 | const pseudo_typeS obj_pseudo_table[] = | |
71 | { | |
72 | {"line", obj_aout_line, 0}, /* source code line number */ | |
73 | {"ln", obj_aout_line, 0}, /* coff line number that we use anyway */ | |
74 | ||
75 | {"weak", obj_aout_weak, 0}, /* mark symbol as weak. */ | |
76 | ||
77 | {"type", obj_aout_type, 0}, | |
78 | ||
79 | /* coff debug pseudos (ignored) */ | |
80 | {"def", s_ignore, 0}, | |
81 | {"dim", s_ignore, 0}, | |
82 | {"endef", s_ignore, 0}, | |
83 | {"ident", s_ignore, 0}, | |
84 | {"line", s_ignore, 0}, | |
85 | {"ln", s_ignore, 0}, | |
86 | {"scl", s_ignore, 0}, | |
87 | {"size", s_ignore, 0}, | |
88 | {"tag", s_ignore, 0}, | |
89 | {"val", s_ignore, 0}, | |
90 | {"version", s_ignore, 0}, | |
91 | ||
92 | {"optim", s_ignore, 0}, /* For sun386i cc (?) */ | |
93 | ||
94 | /* other stuff */ | |
95 | {"ABORT", s_abort, 0}, | |
96 | ||
97 | {NULL} /* end sentinel */ | |
98 | }; /* obj_pseudo_table */ | |
99 | ||
100 | ||
101 | #ifdef BFD_ASSEMBLER | |
102 | ||
103 | void | |
104 | obj_aout_frob_symbol (sym, punt) | |
105 | symbolS *sym; | |
106 | int *punt; | |
107 | { | |
108 | flagword flags; | |
109 | asection *sec; | |
110 | int desc, type, other; | |
111 | ||
49309057 | 112 | flags = symbol_get_bfdsym (sym)->flags; |
252b5132 RH |
113 | desc = S_GET_DESC (sym); |
114 | type = S_GET_TYPE (sym); | |
115 | other = S_GET_OTHER (sym); | |
49309057 | 116 | sec = S_GET_SEGMENT (sym); |
252b5132 RH |
117 | |
118 | /* Only frob simple symbols this way right now. */ | |
119 | if (! (type & ~ (N_TYPE | N_EXT))) | |
120 | { | |
121 | if (type == (N_UNDF | N_EXT) | |
122 | && sec == &bfd_abs_section) | |
49309057 ILT |
123 | { |
124 | sec = bfd_und_section_ptr; | |
125 | S_SET_SEGMENT (sym, sec); | |
126 | } | |
252b5132 RH |
127 | |
128 | if ((type & N_TYPE) != N_INDR | |
129 | && (type & N_TYPE) != N_SETA | |
130 | && (type & N_TYPE) != N_SETT | |
131 | && (type & N_TYPE) != N_SETD | |
132 | && (type & N_TYPE) != N_SETB | |
133 | && type != N_WARNING | |
134 | && (sec == &bfd_abs_section | |
135 | || sec == &bfd_und_section)) | |
136 | return; | |
137 | if (flags & BSF_EXPORT) | |
138 | type |= N_EXT; | |
139 | ||
140 | switch (type & N_TYPE) | |
141 | { | |
142 | case N_SETA: | |
143 | case N_SETT: | |
144 | case N_SETD: | |
145 | case N_SETB: | |
146 | /* Set the debugging flag for constructor symbols so that | |
147 | BFD leaves them alone. */ | |
49309057 | 148 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
149 | |
150 | /* You can't put a common symbol in a set. The way a set | |
151 | element works is that the symbol has a definition and a | |
152 | name, and the linker adds the definition to the set of | |
153 | that name. That does not work for a common symbol, | |
154 | because the linker can't tell which common symbol the | |
155 | user means. FIXME: Using as_bad here may be | |
156 | inappropriate, since the user may want to force a | |
157 | particular type without regard to the semantics of sets; | |
158 | on the other hand, we certainly don't want anybody to be | |
159 | mislead into thinking that their code will work. */ | |
160 | if (S_IS_COMMON (sym)) | |
161 | as_bad (_("Attempt to put a common symbol into set %s"), | |
162 | S_GET_NAME (sym)); | |
163 | /* Similarly, you can't put an undefined symbol in a set. */ | |
164 | else if (! S_IS_DEFINED (sym)) | |
165 | as_bad (_("Attempt to put an undefined symbol into set %s"), | |
166 | S_GET_NAME (sym)); | |
167 | ||
168 | break; | |
169 | case N_INDR: | |
170 | /* Put indirect symbols in the indirect section. */ | |
49309057 ILT |
171 | S_SET_SEGMENT (sym, bfd_ind_section_ptr); |
172 | symbol_get_bfdsym (sym)->flags |= BSF_INDIRECT; | |
252b5132 RH |
173 | if (type & N_EXT) |
174 | { | |
49309057 ILT |
175 | symbol_get_bfdsym (sym)->flags |= BSF_EXPORT; |
176 | symbol_get_bfdsym (sym)->flags &=~ BSF_LOCAL; | |
252b5132 RH |
177 | } |
178 | break; | |
179 | case N_WARNING: | |
180 | /* Mark warning symbols. */ | |
49309057 | 181 | symbol_get_bfdsym (sym)->flags |= BSF_WARNING; |
252b5132 RH |
182 | break; |
183 | } | |
184 | } | |
185 | else | |
186 | { | |
49309057 | 187 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
188 | } |
189 | ||
190 | S_SET_TYPE (sym, type); | |
191 | ||
192 | /* Double check weak symbols. */ | |
49309057 | 193 | if (S_IS_WEAK (sym)) |
252b5132 RH |
194 | { |
195 | if (S_IS_COMMON (sym)) | |
196 | as_bad (_("Symbol `%s' can not be both weak and common"), | |
197 | S_GET_NAME (sym)); | |
198 | } | |
199 | } | |
200 | ||
201 | void | |
202 | obj_aout_frob_file () | |
203 | { | |
204 | /* Relocation processing may require knowing the VMAs of the sections. | |
205 | Since writing to a section will cause the BFD back end to compute the | |
206 | VMAs, fake it out here.... */ | |
207 | bfd_byte b = 0; | |
208 | boolean x = true; | |
209 | if (bfd_section_size (stdoutput, text_section) != 0) | |
210 | { | |
211 | x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0, | |
212 | (bfd_size_type) 1); | |
213 | } | |
214 | else if (bfd_section_size (stdoutput, data_section) != 0) | |
215 | { | |
216 | x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0, | |
217 | (bfd_size_type) 1); | |
218 | } | |
219 | assert (x == true); | |
220 | } | |
221 | ||
222 | #else | |
223 | ||
224 | /* Relocation. */ | |
225 | ||
226 | /* | |
227 | * emit_relocations() | |
228 | * | |
229 | * Crawl along a fixS chain. Emit the segment's relocations. | |
230 | */ | |
231 | void | |
232 | obj_emit_relocations (where, fixP, segment_address_in_file) | |
233 | char **where; | |
234 | fixS *fixP; /* Fixup chain for this segment. */ | |
235 | relax_addressT segment_address_in_file; | |
236 | { | |
237 | for (; fixP; fixP = fixP->fx_next) | |
238 | if (fixP->fx_done == 0) | |
239 | { | |
240 | symbolS *sym; | |
241 | ||
242 | sym = fixP->fx_addsy; | |
243 | while (sym->sy_value.X_op == O_symbol | |
244 | && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) | |
245 | sym = sym->sy_value.X_add_symbol; | |
246 | fixP->fx_addsy = sym; | |
247 | ||
248 | if (! sym->sy_resolved && ! S_IS_DEFINED (sym)) | |
249 | { | |
250 | char *file; | |
251 | unsigned int line; | |
252 | ||
253 | if (expr_symbol_where (sym, &file, &line)) | |
254 | as_bad_where (file, line, _("unresolved relocation")); | |
255 | else | |
256 | as_bad (_("bad relocation: symbol `%s' not in symbol table"), | |
257 | S_GET_NAME (sym)); | |
258 | } | |
259 | ||
260 | tc_aout_fix_to_chars (*where, fixP, segment_address_in_file); | |
261 | *where += md_reloc_size; | |
262 | } | |
263 | } | |
264 | ||
265 | #ifndef obj_header_append | |
266 | /* Aout file generation & utilities */ | |
267 | void | |
268 | obj_header_append (where, headers) | |
269 | char **where; | |
270 | object_headers *headers; | |
271 | { | |
272 | tc_headers_hook (headers); | |
273 | ||
274 | #ifdef CROSS_COMPILE | |
275 | md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info)); | |
276 | *where += sizeof (headers->header.a_info); | |
277 | md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text)); | |
278 | *where += sizeof (headers->header.a_text); | |
279 | md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data)); | |
280 | *where += sizeof (headers->header.a_data); | |
281 | md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss)); | |
282 | *where += sizeof (headers->header.a_bss); | |
283 | md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms)); | |
284 | *where += sizeof (headers->header.a_syms); | |
285 | md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry)); | |
286 | *where += sizeof (headers->header.a_entry); | |
287 | md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize)); | |
288 | *where += sizeof (headers->header.a_trsize); | |
289 | md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize)); | |
290 | *where += sizeof (headers->header.a_drsize); | |
291 | ||
292 | #else /* CROSS_COMPILE */ | |
293 | ||
294 | append (where, (char *) &headers->header, sizeof (headers->header)); | |
295 | #endif /* CROSS_COMPILE */ | |
296 | ||
297 | } | |
298 | #endif | |
299 | ||
300 | void | |
301 | obj_symbol_to_chars (where, symbolP) | |
302 | char **where; | |
303 | symbolS *symbolP; | |
304 | { | |
305 | md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP))); | |
306 | md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP))); | |
307 | md_number_to_chars ((char *) &(symbolP->sy_symbol.n_value), S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value)); | |
308 | ||
309 | append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type)); | |
310 | } | |
311 | ||
312 | void | |
313 | obj_emit_symbols (where, symbol_rootP) | |
314 | char **where; | |
315 | symbolS *symbol_rootP; | |
316 | { | |
317 | symbolS *symbolP; | |
318 | ||
319 | /* Emit all symbols left in the symbol chain. */ | |
320 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
321 | { | |
322 | /* Used to save the offset of the name. It is used to point | |
323 | to the string in memory but must be a file offset. */ | |
324 | register char *temp; | |
325 | ||
326 | temp = S_GET_NAME (symbolP); | |
327 | S_SET_OFFSET (symbolP, symbolP->sy_name_offset); | |
328 | ||
329 | /* Any symbol still undefined and is not a dbg symbol is made N_EXT. */ | |
330 | if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP)) | |
331 | S_SET_EXTERNAL (symbolP); | |
332 | ||
333 | /* Adjust the type of a weak symbol. */ | |
334 | if (S_GET_WEAK (symbolP)) | |
335 | { | |
336 | switch (S_GET_TYPE (symbolP)) | |
337 | { | |
338 | case N_UNDF: S_SET_TYPE (symbolP, N_WEAKU); break; | |
339 | case N_ABS: S_SET_TYPE (symbolP, N_WEAKA); break; | |
340 | case N_TEXT: S_SET_TYPE (symbolP, N_WEAKT); break; | |
341 | case N_DATA: S_SET_TYPE (symbolP, N_WEAKD); break; | |
342 | case N_BSS: S_SET_TYPE (symbolP, N_WEAKB); break; | |
343 | default: as_bad (_("%s: bad type for weak symbol"), temp); break; | |
344 | } | |
345 | } | |
346 | ||
347 | obj_symbol_to_chars (where, symbolP); | |
348 | S_SET_NAME (symbolP, temp); | |
349 | } | |
350 | } | |
351 | ||
352 | #endif /* ! BFD_ASSEMBLER */ | |
353 | ||
354 | static void | |
355 | obj_aout_line (ignore) | |
356 | int ignore; | |
357 | { | |
358 | /* Assume delimiter is part of expression. | |
359 | BSD4.2 as fails with delightful bug, so we | |
360 | are not being incompatible here. */ | |
361 | new_logical_line ((char *) NULL, (int) (get_absolute_expression ())); | |
362 | demand_empty_rest_of_line (); | |
363 | } /* obj_aout_line() */ | |
364 | ||
365 | /* Handle .weak. This is a GNU extension. */ | |
366 | ||
367 | static void | |
368 | obj_aout_weak (ignore) | |
369 | int ignore; | |
370 | { | |
371 | char *name; | |
372 | int c; | |
373 | symbolS *symbolP; | |
374 | ||
375 | do | |
376 | { | |
377 | name = input_line_pointer; | |
378 | c = get_symbol_end (); | |
379 | symbolP = symbol_find_or_make (name); | |
380 | *input_line_pointer = c; | |
381 | SKIP_WHITESPACE (); | |
382 | S_SET_WEAK (symbolP); | |
383 | if (c == ',') | |
384 | { | |
385 | input_line_pointer++; | |
386 | SKIP_WHITESPACE (); | |
387 | if (*input_line_pointer == '\n') | |
388 | c = '\n'; | |
389 | } | |
390 | } | |
391 | while (c == ','); | |
392 | demand_empty_rest_of_line (); | |
393 | } | |
394 | ||
395 | /* Handle .type. On {Net,Open}BSD, this is used to set the n_other field, | |
396 | which is then apparently used when doing dynamic linking. Older | |
397 | versions ogas ignored the .type pseudo-op, so we also ignore it if | |
398 | we can't parse it. */ | |
399 | ||
400 | static void | |
401 | obj_aout_type (ignore) | |
402 | int ignore; | |
403 | { | |
404 | char *name; | |
405 | int c; | |
406 | symbolS *sym; | |
407 | ||
408 | name = input_line_pointer; | |
409 | c = get_symbol_end (); | |
410 | sym = symbol_find (name); | |
411 | *input_line_pointer = c; | |
412 | if (sym != NULL) | |
413 | { | |
414 | SKIP_WHITESPACE (); | |
415 | if (*input_line_pointer == ',') | |
416 | { | |
417 | ++input_line_pointer; | |
418 | SKIP_WHITESPACE (); | |
419 | if (*input_line_pointer == '@') | |
420 | { | |
421 | ++input_line_pointer; | |
422 | if (strncmp (input_line_pointer, "object", 6) == 0) | |
423 | S_SET_OTHER (sym, 1); | |
424 | else if (strncmp (input_line_pointer, "function", 8) == 0) | |
425 | S_SET_OTHER (sym, 2); | |
426 | } | |
427 | } | |
428 | } | |
429 | ||
430 | /* Ignore everything else on the line. */ | |
431 | s_ignore (0); | |
432 | } | |
433 | ||
434 | void | |
435 | obj_read_begin_hook () | |
436 | { | |
437 | } | |
438 | ||
439 | #ifndef BFD_ASSEMBLER | |
440 | ||
441 | void | |
442 | obj_crawl_symbol_chain (headers) | |
443 | object_headers *headers; | |
444 | { | |
445 | symbolS *symbolP; | |
446 | symbolS **symbolPP; | |
447 | int symbol_number = 0; | |
448 | ||
449 | tc_crawl_symbol_chain (headers); | |
450 | ||
451 | symbolPP = &symbol_rootP; /*->last symbol chain link. */ | |
452 | while ((symbolP = *symbolPP) != NULL) | |
453 | { | |
454 | if (symbolP->sy_mri_common) | |
455 | { | |
456 | if (S_IS_EXTERNAL (symbolP)) | |
457 | as_bad (_("%s: global symbols not supported in common sections"), | |
458 | S_GET_NAME (symbolP)); | |
459 | *symbolPP = symbol_next (symbolP); | |
460 | continue; | |
461 | } | |
462 | ||
463 | if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA)) | |
464 | { | |
465 | S_SET_SEGMENT (symbolP, SEG_TEXT); | |
466 | } /* if pusing data into text */ | |
467 | ||
468 | resolve_symbol_value (symbolP, 1); | |
469 | ||
470 | /* Skip symbols which were equated to undefined or common | |
471 | symbols. */ | |
472 | if (symbolP->sy_value.X_op == O_symbol | |
473 | && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP))) | |
474 | { | |
475 | *symbolPP = symbol_next (symbolP); | |
476 | continue; | |
477 | } | |
478 | ||
479 | /* OK, here is how we decide which symbols go out into the brave | |
480 | new symtab. Symbols that do are: | |
481 | ||
482 | * symbols with no name (stabd's?) | |
483 | * symbols with debug info in their N_TYPE | |
484 | ||
485 | Symbols that don't are: | |
486 | * symbols that are registers | |
487 | * symbols with \1 as their 3rd character (numeric labels) | |
488 | * "local labels" as defined by S_LOCAL_NAME(name) if the -L | |
489 | switch was passed to gas. | |
490 | ||
491 | All other symbols are output. We complain if a deleted | |
492 | symbol was marked external. */ | |
493 | ||
494 | ||
495 | if (!S_IS_REGISTER (symbolP) | |
496 | && (!S_GET_NAME (symbolP) | |
497 | || S_IS_DEBUG (symbolP) | |
498 | || !S_IS_DEFINED (symbolP) | |
499 | || S_IS_EXTERNAL (symbolP) | |
500 | || (S_GET_NAME (symbolP)[0] != '\001' | |
501 | && (flag_keep_locals || !S_LOCAL_NAME (symbolP))))) | |
502 | { | |
503 | symbolP->sy_number = symbol_number++; | |
504 | ||
505 | /* The + 1 after strlen account for the \0 at the | |
506 | end of each string */ | |
507 | if (!S_IS_STABD (symbolP)) | |
508 | { | |
509 | /* Ordinary case. */ | |
510 | symbolP->sy_name_offset = string_byte_count; | |
511 | string_byte_count += strlen (S_GET_NAME (symbolP)) + 1; | |
512 | } | |
513 | else /* .Stabd case. */ | |
514 | symbolP->sy_name_offset = 0; | |
515 | symbolPP = &(symbol_next (symbolP)); | |
516 | } | |
517 | else | |
518 | { | |
519 | if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) | |
520 | /* This warning should never get triggered any more. | |
521 | Well, maybe if you're doing twisted things with | |
522 | register names... */ | |
523 | { | |
524 | as_bad (_("Local symbol %s never defined."), decode_local_label_name (S_GET_NAME (symbolP))); | |
525 | } /* oops. */ | |
526 | ||
527 | /* Unhook it from the chain */ | |
528 | *symbolPP = symbol_next (symbolP); | |
529 | } /* if this symbol should be in the output */ | |
530 | } /* for each symbol */ | |
531 | ||
532 | H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); | |
533 | } | |
534 | ||
535 | /* | |
536 | * Find strings by crawling along symbol table chain. | |
537 | */ | |
538 | ||
539 | void | |
540 | obj_emit_strings (where) | |
541 | char **where; | |
542 | { | |
543 | symbolS *symbolP; | |
544 | ||
545 | #ifdef CROSS_COMPILE | |
546 | /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ | |
547 | md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count)); | |
548 | *where += sizeof (string_byte_count); | |
549 | #else /* CROSS_COMPILE */ | |
550 | append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count)); | |
551 | #endif /* CROSS_COMPILE */ | |
552 | ||
553 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
554 | { | |
555 | if (S_GET_NAME (symbolP)) | |
556 | append (&next_object_file_charP, S_GET_NAME (symbolP), | |
557 | (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1)); | |
558 | } /* walk symbol chain */ | |
559 | } | |
560 | ||
561 | #ifndef AOUT_VERSION | |
562 | #define AOUT_VERSION 0 | |
563 | #endif | |
564 | ||
565 | void | |
566 | obj_pre_write_hook (headers) | |
567 | object_headers *headers; | |
568 | { | |
569 | H_SET_DYNAMIC (headers, 0); | |
570 | H_SET_VERSION (headers, AOUT_VERSION); | |
571 | H_SET_MACHTYPE (headers, AOUT_MACHTYPE); | |
572 | tc_aout_pre_write_hook (headers); | |
573 | } | |
574 | ||
575 | void | |
576 | DEFUN_VOID (s_sect) | |
577 | { | |
578 | /* Strip out the section name */ | |
579 | char *section_name; | |
580 | char *section_name_end; | |
581 | char c; | |
582 | ||
583 | unsigned int len; | |
584 | unsigned int exp; | |
585 | char *save; | |
586 | ||
587 | section_name = input_line_pointer; | |
588 | c = get_symbol_end (); | |
589 | section_name_end = input_line_pointer; | |
590 | ||
591 | len = section_name_end - section_name; | |
592 | input_line_pointer++; | |
593 | save = input_line_pointer; | |
594 | ||
595 | SKIP_WHITESPACE (); | |
596 | if (c == ',') | |
597 | { | |
598 | exp = get_absolute_expression (); | |
599 | } | |
600 | else if (*input_line_pointer == ',') | |
601 | { | |
602 | input_line_pointer++; | |
603 | exp = get_absolute_expression (); | |
604 | } | |
605 | else | |
606 | { | |
607 | input_line_pointer = save; | |
608 | exp = 0; | |
609 | } | |
610 | if (exp >= 1000) | |
611 | { | |
612 | as_bad (_("subsegment index too high")); | |
613 | } | |
614 | ||
615 | if (strcmp (section_name, ".text") == 0) | |
616 | { | |
617 | subseg_set (SEG_TEXT, (subsegT) exp); | |
618 | } | |
619 | ||
620 | if (strcmp (section_name, ".data") == 0) | |
621 | { | |
622 | if (flag_readonly_data_in_text) | |
623 | subseg_set (SEG_TEXT, (subsegT) exp + 1000); | |
624 | else | |
625 | subseg_set (SEG_DATA, (subsegT) exp); | |
626 | } | |
627 | ||
628 | *section_name_end = c; | |
629 | } | |
630 | ||
631 | #endif /* ! BFD_ASSEMBLER */ | |
632 | ||
633 | /* end of obj-aout.c */ |