Commit | Line | Data |
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bd5635a1 | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
d8ce1326 | 2 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
7e258d18 | 3 | Copyright 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
99a7de40 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
99a7de40 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
99a7de40 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | \f |
bd5635a1 | 21 | #include "defs.h" |
bd5635a1 | 22 | #include "symtab.h" |
318bf84f | 23 | #include "gdbtypes.h" |
bd5635a1 RP |
24 | #include "breakpoint.h" |
25 | #include "bfd.h" | |
bd5635a1 | 26 | #include "symfile.h" |
318bf84f | 27 | #include "buildsym.h" |
bd5635a1 | 28 | #include <obstack.h> |
318bf84f | 29 | |
bd5635a1 RP |
30 | #include <string.h> |
31 | ||
f5f0679a | 32 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
63989338 JG |
33 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
34 | ||
8714ff35 JK |
35 | /* To be an sdb debug type, type must have at least a basic or primary |
36 | derived type. Using this rather than checking against T_NULL is | |
ab8f22a9 JK |
37 | said to prevent core dumps if we try to operate on Michael Bloom |
38 | dbx-in-coff file. */ | |
8714ff35 JK |
39 | |
40 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
41 | ||
d8ce1326 JG |
42 | /* |
43 | * Convert from an sdb register number to an internal gdb register number. | |
44 | * This should be defined in tm.h, if REGISTER_NAMES is not set up | |
45 | * to map one to one onto the sdb register numbers. | |
46 | */ | |
47 | #ifndef SDB_REG_TO_REGNUM | |
48 | # define SDB_REG_TO_REGNUM(value) (value) | |
49 | #endif | |
50 | ||
bd5635a1 RP |
51 | /* Core address of start and end of text of current source file. |
52 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
53 | ||
54 | static CORE_ADDR cur_src_start_addr; | |
55 | static CORE_ADDR cur_src_end_addr; | |
56 | ||
57 | /* Core address of the end of the first object file. */ | |
58 | static CORE_ADDR first_object_file_end; | |
59 | ||
bd5635a1 RP |
60 | /* The addresses of the symbol table stream and number of symbols |
61 | of the object file we are reading (as copied into core). */ | |
62 | ||
63 | static FILE *nlist_stream_global; | |
64 | static int nlist_nsyms_global; | |
65 | ||
bd5635a1 RP |
66 | /* Vector of line number information. */ |
67 | ||
68 | static struct linetable *line_vector; | |
69 | ||
70 | /* Index of next entry to go in line_vector_index. */ | |
71 | ||
72 | static int line_vector_index; | |
73 | ||
74 | /* Last line number recorded in the line vector. */ | |
75 | ||
76 | static int prev_line_number; | |
77 | ||
78 | /* Number of elements allocated for line_vector currently. */ | |
79 | ||
80 | static int line_vector_length; | |
81 | ||
d8ce1326 JG |
82 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
83 | ||
84 | static char *temp_sym; | |
85 | static char *temp_aux; | |
86 | ||
87 | /* Local variables that hold the shift and mask values for the | |
88 | COFF file that we are currently reading. These come back to us | |
89 | from BFD, and are referenced by their macro names, as well as | |
90 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
91 | macros from ../internalcoff.h . */ | |
92 | ||
93 | static unsigned local_n_btmask; | |
94 | static unsigned local_n_btshft; | |
95 | static unsigned local_n_tmask; | |
96 | static unsigned local_n_tshift; | |
97 | ||
98 | #define N_BTMASK local_n_btmask | |
99 | #define N_BTSHFT local_n_btshft | |
100 | #define N_TMASK local_n_tmask | |
101 | #define N_TSHIFT local_n_tshift | |
102 | ||
103 | /* Local variables that hold the sizes in the file of various COFF structures. | |
104 | (We only need to know this to read them from the file -- BFD will then | |
105 | translate the data in them, into `internal_xxx' structs in the right | |
106 | byte order, alignment, etc.) */ | |
107 | ||
108 | static unsigned local_linesz; | |
109 | static unsigned local_symesz; | |
110 | static unsigned local_auxesz; | |
111 | ||
112 | ||
bd5635a1 RP |
113 | /* Chain of typedefs of pointers to empty struct/union types. |
114 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
115 | ||
bd5635a1 RP |
116 | static struct symbol *opaque_type_chain[HASHSIZE]; |
117 | ||
118 | /* Record the symbols defined for each context in a list. | |
119 | We don't create a struct block for the context until we | |
120 | know how long to make it. */ | |
121 | ||
318bf84f | 122 | struct coff_pending |
bd5635a1 | 123 | { |
318bf84f | 124 | struct coff_pending *next; |
bd5635a1 RP |
125 | struct symbol *symbol; |
126 | }; | |
127 | ||
128 | /* Here are the three lists that symbols are put on. */ | |
129 | ||
318bf84f | 130 | struct coff_pending *coff_file_symbols; /* static at top level, and types */ |
bd5635a1 | 131 | |
318bf84f | 132 | struct coff_pending *coff_global_symbols; /* global functions and variables */ |
bd5635a1 | 133 | |
318bf84f | 134 | struct coff_pending *coff_local_symbols; /* everything local to lexical context */ |
bd5635a1 RP |
135 | |
136 | /* List of unclosed lexical contexts | |
137 | (that will become blocks, eventually). */ | |
138 | ||
318bf84f | 139 | struct coff_context_stack |
bd5635a1 | 140 | { |
318bf84f FF |
141 | struct coff_context_stack *next; |
142 | struct coff_pending *locals; | |
bd5635a1 RP |
143 | struct pending_block *old_blocks; |
144 | struct symbol *name; | |
145 | CORE_ADDR start_addr; | |
146 | int depth; | |
147 | }; | |
148 | ||
318bf84f | 149 | struct coff_context_stack *coff_context_stack; |
bd5635a1 RP |
150 | |
151 | /* Nonzero if within a function (so symbols should be local, | |
152 | if nothing says specifically). */ | |
153 | ||
154 | int within_function; | |
155 | ||
d8ce1326 JG |
156 | #if 0 |
157 | /* The type of the function we are currently reading in. This is | |
158 | used by define_symbol to record the type of arguments to a function. */ | |
159 | ||
160 | struct type *in_function_type; | |
161 | #endif | |
162 | ||
bd5635a1 RP |
163 | struct pending_block *pending_blocks; |
164 | ||
165 | extern CORE_ADDR startup_file_start; /* From blockframe.c */ | |
166 | extern CORE_ADDR startup_file_end; /* From blockframe.c */ | |
167 | ||
168 | /* Complaints about various problems in the file being read */ | |
169 | ||
170 | struct complaint ef_complaint = | |
171 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
172 | ||
7e258d18 PB |
173 | struct complaint bf_no_aux_complaint = |
174 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
175 | ||
176 | struct complaint ef_no_aux_complaint = | |
177 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 178 | |
63989338 JG |
179 | struct complaint lineno_complaint = |
180 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
181 | ||
7e258d18 PB |
182 | struct complaint unexpected_type_complaint = |
183 | {"Unexpected type for symbol %s", 0, 0}; | |
184 | ||
185 | struct complaint bad_sclass_complaint = | |
186 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f FF |
187 | |
188 | /* Simplified internal version of coff symbol table information */ | |
189 | ||
190 | struct coff_symbol { | |
191 | char *c_name; | |
192 | int c_symnum; /* symbol number of this entry */ | |
193 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
194 | long c_value; | |
195 | int c_sclass; | |
196 | int c_secnum; | |
197 | unsigned int c_type; | |
198 | }; | |
199 | ||
200 | static struct type * | |
201 | coff_read_struct_type PARAMS ((int, int, int)); | |
202 | ||
203 | static struct type * | |
204 | decode_base_type PARAMS ((struct coff_symbol *, unsigned int, | |
205 | union internal_auxent *)); | |
206 | ||
207 | static struct type * | |
208 | decode_type PARAMS ((struct coff_symbol *, unsigned int, | |
209 | union internal_auxent *)); | |
210 | ||
211 | static struct type * | |
212 | decode_function_type PARAMS ((struct coff_symbol *, unsigned int, | |
213 | union internal_auxent *)); | |
214 | ||
215 | static struct type * | |
216 | coff_read_enum_type PARAMS ((int, int, int)); | |
217 | ||
218 | static struct blockvector * | |
219 | make_blockvector PARAMS ((struct objfile *)); | |
220 | ||
221 | static struct symbol * | |
222 | process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *, | |
223 | struct objfile *)); | |
224 | ||
225 | static PTR | |
226 | patch_opaque_types PARAMS ((struct objfile *, struct symtab *, PTR, PTR, PTR)); | |
227 | ||
228 | static void | |
229 | patch_type PARAMS ((struct type *, struct type *)); | |
230 | ||
231 | static void | |
232 | enter_linenos PARAMS ((long, int, int)); | |
233 | ||
234 | static int | |
235 | init_lineno PARAMS ((int, long, int)); | |
236 | ||
237 | static char * | |
238 | getfilename PARAMS ((union internal_auxent *)); | |
239 | ||
240 | static char * | |
241 | getsymname PARAMS ((struct internal_syment *)); | |
242 | ||
243 | static void | |
244 | free_stringtab PARAMS ((void)); | |
245 | ||
246 | static int | |
247 | init_stringtab PARAMS ((int, long)); | |
248 | ||
249 | static void | |
250 | read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *, | |
251 | union internal_auxent *)); | |
252 | ||
253 | static void | |
254 | read_coff_symtab PARAMS ((int, int, struct objfile *)); | |
255 | ||
256 | static void | |
257 | coff_new_init PARAMS ((void)); | |
258 | ||
259 | static void | |
260 | coff_symfile_read PARAMS ((struct sym_fns *, CORE_ADDR, int)); | |
261 | ||
262 | static void | |
263 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
264 | ||
265 | static void | |
266 | coff_symfile_init PARAMS ((struct sym_fns *)); | |
267 | ||
268 | static void | |
269 | record_minimal_symbol PARAMS ((char *, CORE_ADDR)); | |
270 | ||
271 | static void | |
272 | coff_end_symtab PARAMS ((struct objfile *)); | |
273 | ||
274 | static void | |
275 | complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); | |
276 | ||
277 | static void | |
278 | coff_start_symtab PARAMS ((void)); | |
279 | ||
280 | static void | |
281 | coff_record_line PARAMS ((int, CORE_ADDR)); | |
282 | ||
283 | static void | |
284 | coff_finish_block PARAMS ((struct symbol *, struct coff_pending **, | |
285 | struct pending_block *, CORE_ADDR, CORE_ADDR, | |
286 | struct objfile *)); | |
287 | ||
288 | static void | |
289 | coff_add_symbol_to_list PARAMS ((struct symbol *, struct coff_pending **)); | |
290 | ||
291 | static struct type * | |
292 | coff_alloc_type PARAMS ((int)); | |
293 | ||
294 | static struct type ** | |
295 | coff_lookup_type PARAMS ((int)); | |
296 | ||
bd5635a1 RP |
297 | \f |
298 | /* Look up a coff type-number index. Return the address of the slot | |
299 | where the type for that index is stored. | |
300 | The type-number is in INDEX. | |
301 | ||
302 | This can be used for finding the type associated with that index | |
303 | or for associating a new type with the index. */ | |
304 | ||
305 | static struct type ** | |
306 | coff_lookup_type (index) | |
307 | register int index; | |
308 | { | |
309 | if (index >= type_vector_length) | |
310 | { | |
311 | int old_vector_length = type_vector_length; | |
312 | ||
313 | type_vector_length *= 2; | |
314 | if (type_vector_length < index) { | |
315 | type_vector_length = index * 2; | |
316 | } | |
159a075e | 317 | type_vector = (struct type **) |
318bf84f FF |
318 | xrealloc ((char *) type_vector, |
319 | type_vector_length * sizeof (struct type *)); | |
159a075e | 320 | bzero (&type_vector[old_vector_length], |
bd5635a1 RP |
321 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
322 | } | |
159a075e | 323 | return &type_vector[index]; |
bd5635a1 RP |
324 | } |
325 | ||
326 | /* Make sure there is a type allocated for type number index | |
327 | and return the type object. | |
328 | This can create an empty (zeroed) type object. */ | |
329 | ||
330 | static struct type * | |
331 | coff_alloc_type (index) | |
332 | int index; | |
333 | { | |
334 | register struct type **type_addr = coff_lookup_type (index); | |
335 | register struct type *type = *type_addr; | |
336 | ||
337 | /* If we are referring to a type not known at all yet, | |
338 | allocate an empty type for it. | |
339 | We will fill it in later if we find out how. */ | |
318bf84f | 340 | if (type == NULL) |
bd5635a1 | 341 | { |
318bf84f | 342 | type = alloc_type (current_objfile); |
bd5635a1 RP |
343 | *type_addr = type; |
344 | } | |
345 | return type; | |
346 | } | |
347 | \f | |
348 | /* maintain the lists of symbols and blocks */ | |
349 | ||
350 | /* Add a symbol to one of the lists of symbols. */ | |
351 | static void | |
318bf84f | 352 | coff_add_symbol_to_list (symbol, listhead) |
bd5635a1 | 353 | struct symbol *symbol; |
318bf84f | 354 | struct coff_pending **listhead; |
bd5635a1 | 355 | { |
318bf84f FF |
356 | register struct coff_pending *link |
357 | = (struct coff_pending *) xmalloc (sizeof (struct coff_pending)); | |
bd5635a1 RP |
358 | |
359 | link->next = *listhead; | |
360 | link->symbol = symbol; | |
361 | *listhead = link; | |
362 | } | |
363 | ||
364 | /* Take one of the lists of symbols and make a block from it. | |
365 | Put the block on the list of pending blocks. */ | |
366 | ||
367 | static void | |
318bf84f | 368 | coff_finish_block (symbol, listhead, old_blocks, start, end, objfile) |
bd5635a1 | 369 | struct symbol *symbol; |
318bf84f | 370 | struct coff_pending **listhead; |
bd5635a1 RP |
371 | struct pending_block *old_blocks; |
372 | CORE_ADDR start, end; | |
318bf84f | 373 | struct objfile *objfile; |
bd5635a1 | 374 | { |
318bf84f | 375 | register struct coff_pending *next, *next1; |
bd5635a1 RP |
376 | register struct block *block; |
377 | register struct pending_block *pblock; | |
378 | struct pending_block *opblock; | |
379 | register int i; | |
380 | ||
381 | /* Count the length of the list of symbols. */ | |
382 | ||
383 | for (next = *listhead, i = 0; next; next = next->next, i++); | |
384 | ||
385 | block = (struct block *) | |
318bf84f | 386 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct block) + (i - 1) * sizeof (struct symbol *)); |
bd5635a1 RP |
387 | |
388 | /* Copy the symbols into the block. */ | |
389 | ||
390 | BLOCK_NSYMS (block) = i; | |
391 | for (next = *listhead; next; next = next->next) | |
392 | BLOCK_SYM (block, --i) = next->symbol; | |
393 | ||
394 | BLOCK_START (block) = start; | |
395 | BLOCK_END (block) = end; | |
396 | BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */ | |
397 | ||
398 | /* Put the block in as the value of the symbol that names it. */ | |
399 | ||
400 | if (symbol) | |
401 | { | |
402 | SYMBOL_BLOCK_VALUE (symbol) = block; | |
403 | BLOCK_FUNCTION (block) = symbol; | |
404 | } | |
405 | else | |
406 | BLOCK_FUNCTION (block) = 0; | |
407 | ||
408 | /* Now free the links of the list, and empty the list. */ | |
409 | ||
410 | for (next = *listhead; next; next = next1) | |
411 | { | |
412 | next1 = next->next; | |
413 | free (next); | |
414 | } | |
415 | *listhead = 0; | |
416 | ||
417 | /* Install this block as the superblock | |
418 | of all blocks made since the start of this scope | |
419 | that don't have superblocks yet. */ | |
420 | ||
421 | opblock = 0; | |
422 | for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next) | |
423 | { | |
424 | if (BLOCK_SUPERBLOCK (pblock->block) == 0) | |
425 | BLOCK_SUPERBLOCK (pblock->block) = block; | |
426 | opblock = pblock; | |
427 | } | |
428 | ||
429 | /* Record this block on the list of all blocks in the file. | |
430 | Put it after opblock, or at the beginning if opblock is 0. | |
431 | This puts the block in the list after all its subblocks. */ | |
432 | ||
433 | pblock = (struct pending_block *) xmalloc (sizeof (struct pending_block)); | |
434 | pblock->block = block; | |
435 | if (opblock) | |
436 | { | |
437 | pblock->next = opblock->next; | |
438 | opblock->next = pblock; | |
439 | } | |
440 | else | |
441 | { | |
442 | pblock->next = pending_blocks; | |
443 | pending_blocks = pblock; | |
444 | } | |
445 | } | |
446 | ||
447 | static struct blockvector * | |
318bf84f FF |
448 | make_blockvector (objfile) |
449 | struct objfile *objfile; | |
bd5635a1 RP |
450 | { |
451 | register struct pending_block *next, *next1; | |
452 | register struct blockvector *blockvector; | |
453 | register int i; | |
454 | ||
455 | /* Count the length of the list of blocks. */ | |
456 | ||
457 | for (next = pending_blocks, i = 0; next; next = next->next, i++); | |
458 | ||
459 | blockvector = (struct blockvector *) | |
318bf84f | 460 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *)); |
bd5635a1 RP |
461 | |
462 | /* Copy the blocks into the blockvector. | |
463 | This is done in reverse order, which happens to put | |
464 | the blocks into the proper order (ascending starting address). | |
318bf84f | 465 | coff_finish_block has hair to insert each block into the list |
bd5635a1 RP |
466 | after its subblocks in order to make sure this is true. */ |
467 | ||
468 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
469 | for (next = pending_blocks; next; next = next->next) | |
470 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
471 | ||
472 | /* Now free the links of the list, and empty the list. */ | |
473 | ||
474 | for (next = pending_blocks; next; next = next1) | |
475 | { | |
476 | next1 = next->next; | |
477 | free (next); | |
478 | } | |
479 | pending_blocks = 0; | |
480 | ||
481 | return blockvector; | |
482 | } | |
483 | ||
484 | /* Manage the vector of line numbers. */ | |
485 | ||
e1ce8aa5 | 486 | static void |
318bf84f | 487 | coff_record_line (line, pc) |
bd5635a1 RP |
488 | int line; |
489 | CORE_ADDR pc; | |
490 | { | |
491 | struct linetable_entry *e; | |
492 | /* Make sure line vector is big enough. */ | |
493 | ||
494 | if (line_vector_index + 2 >= line_vector_length) | |
495 | { | |
496 | line_vector_length *= 2; | |
497 | line_vector = (struct linetable *) | |
318bf84f | 498 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
499 | + (line_vector_length |
500 | * sizeof (struct linetable_entry))); | |
501 | } | |
502 | ||
503 | e = line_vector->item + line_vector_index++; | |
504 | e->line = line; e->pc = pc; | |
505 | } | |
506 | \f | |
507 | /* Start a new symtab for a new source file. | |
508 | This is called when a COFF ".file" symbol is seen; | |
509 | it indicates the start of data for one original source file. */ | |
510 | ||
511 | static void | |
318bf84f | 512 | coff_start_symtab () |
bd5635a1 | 513 | { |
318bf84f FF |
514 | coff_file_symbols = 0; |
515 | coff_global_symbols = 0; | |
516 | coff_context_stack = 0; | |
bd5635a1 RP |
517 | within_function = 0; |
518 | last_source_file = 0; | |
bd5635a1 | 519 | |
cadbb07a | 520 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 521 | |
cadbb07a JG |
522 | if (line_vector) /* Unlikely, but maybe possible? */ |
523 | free (line_vector); | |
bd5635a1 RP |
524 | line_vector_index = 0; |
525 | line_vector_length = 1000; | |
526 | prev_line_number = -2; /* Force first line number to be explicit */ | |
527 | line_vector = (struct linetable *) | |
528 | xmalloc (sizeof (struct linetable) | |
529 | + line_vector_length * sizeof (struct linetable_entry)); | |
530 | } | |
531 | ||
532 | /* Save the vital information from when starting to read a file, | |
533 | for use when closing off the current file. | |
534 | NAME is the file name the symbols came from, START_ADDR is the first | |
535 | text address for the file, and SIZE is the number of bytes of text. */ | |
536 | ||
537 | static void | |
538 | complete_symtab (name, start_addr, size) | |
539 | char *name; | |
540 | CORE_ADDR start_addr; | |
541 | unsigned int size; | |
542 | { | |
543 | last_source_file = savestring (name, strlen (name)); | |
544 | cur_src_start_addr = start_addr; | |
545 | cur_src_end_addr = start_addr + size; | |
546 | ||
547 | if (entry_point < cur_src_end_addr | |
548 | && entry_point >= cur_src_start_addr) | |
549 | { | |
550 | startup_file_start = cur_src_start_addr; | |
551 | startup_file_end = cur_src_end_addr; | |
552 | } | |
553 | } | |
554 | ||
555 | /* Finish the symbol definitions for one main source file, | |
556 | close off all the lexical contexts for that file | |
557 | (creating struct block's for them), then make the | |
558 | struct symtab for that file and put it in the list of all such. */ | |
559 | ||
560 | static void | |
318bf84f | 561 | coff_end_symtab (objfile) |
a048c8f5 | 562 | struct objfile *objfile; |
bd5635a1 RP |
563 | { |
564 | register struct symtab *symtab; | |
318bf84f | 565 | register struct coff_context_stack *cstk; |
bd5635a1 RP |
566 | register struct blockvector *blockvector; |
567 | register struct linetable *lv; | |
568 | ||
569 | /* Finish the lexical context of the last function in the file. */ | |
570 | ||
318bf84f | 571 | if (coff_context_stack) |
bd5635a1 | 572 | { |
318bf84f FF |
573 | cstk = coff_context_stack; |
574 | coff_context_stack = 0; | |
bd5635a1 | 575 | /* Make a block for the local symbols within. */ |
318bf84f FF |
576 | coff_finish_block (cstk->name, &coff_local_symbols, cstk->old_blocks, |
577 | cstk->start_addr, cur_src_end_addr, objfile); | |
bd5635a1 RP |
578 | free (cstk); |
579 | } | |
580 | ||
581 | /* Ignore a file that has no functions with real debugging info. */ | |
318bf84f | 582 | if (pending_blocks == 0 && coff_file_symbols == 0 && coff_global_symbols == 0) |
bd5635a1 RP |
583 | { |
584 | free (line_vector); | |
585 | line_vector = 0; | |
586 | line_vector_length = -1; | |
587 | last_source_file = 0; | |
588 | return; | |
589 | } | |
590 | ||
a6e2b424 JG |
591 | /* Create the two top-level blocks for this file (STATIC_BLOCK and |
592 | GLOBAL_BLOCK). */ | |
318bf84f FF |
593 | coff_finish_block (0, &coff_file_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile); |
594 | coff_finish_block (0, &coff_global_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile); | |
bd5635a1 RP |
595 | |
596 | /* Create the blockvector that points to all the file's blocks. */ | |
318bf84f | 597 | blockvector = make_blockvector (objfile); |
bd5635a1 RP |
598 | |
599 | /* Now create the symtab object for this source file. */ | |
a048c8f5 | 600 | symtab = allocate_symtab (last_source_file, objfile); |
bd5635a1 RP |
601 | |
602 | /* Fill in its components. */ | |
603 | symtab->blockvector = blockvector; | |
604 | symtab->free_code = free_linetable; | |
d8ce1326 | 605 | symtab->free_ptr = 0; |
bd5635a1 | 606 | symtab->filename = last_source_file; |
b203fc18 | 607 | symtab->dirname = NULL; |
bd5635a1 RP |
608 | lv = line_vector; |
609 | lv->nitems = line_vector_index; | |
610 | symtab->linetable = (struct linetable *) | |
318bf84f | 611 | xrealloc ((char *) lv, (sizeof (struct linetable) |
bd5635a1 | 612 | + lv->nitems * sizeof (struct linetable_entry))); |
b203fc18 | 613 | |
a6e2b424 JG |
614 | free_named_symtabs (symtab->filename); |
615 | ||
bd5635a1 RP |
616 | /* Reinitialize for beginning of new file. */ |
617 | line_vector = 0; | |
618 | line_vector_length = -1; | |
619 | last_source_file = 0; | |
620 | } | |
621 | \f | |
622 | static void | |
318bf84f | 623 | record_minimal_symbol (name, address) |
bd5635a1 RP |
624 | char *name; |
625 | CORE_ADDR address; | |
626 | { | |
318bf84f | 627 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 628 | if (name[0] == '@') return; |
e140f1da | 629 | |
318bf84f FF |
630 | /* mst_text isn't true, but apparently COFF doesn't tell us what it really |
631 | is, so this guess is more useful than mst_unknown. */ | |
632 | prim_record_minimal_symbol (savestring (name, strlen (name)), | |
bd5635a1 | 633 | address, |
318bf84f | 634 | (int)mst_text); |
bd5635a1 RP |
635 | } |
636 | \f | |
637 | /* coff_symfile_init () | |
638 | is the coff-specific initialization routine for reading symbols. | |
639 | It is passed a struct sym_fns which contains, among other things, | |
640 | the BFD for the file whose symbols are being read, and a slot for | |
641 | a pointer to "private data" which we fill with cookies and other | |
642 | treats for coff_symfile_read (). | |
643 | ||
644 | We will only be called if this is a COFF or COFF-like file. | |
645 | BFD handles figuring out the format of the file, and code in symtab.c | |
646 | uses BFD's determination to vector to us. | |
647 | ||
648 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
649 | ||
650 | struct coff_symfile_info { | |
651 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
652 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
653 | }; | |
654 | ||
d8ce1326 JG |
655 | static int text_bfd_scnum; |
656 | ||
9bba3334 | 657 | static void |
bd5635a1 RP |
658 | coff_symfile_init (sf) |
659 | struct sym_fns *sf; | |
660 | { | |
d8ce1326 | 661 | asection *section; |
bd5635a1 RP |
662 | bfd *abfd = sf->sym_bfd; |
663 | ||
664 | /* Allocate struct to keep track of the symfile */ | |
665 | /* FIXME memory leak */ | |
666 | sf->sym_private = xmalloc (sizeof (struct coff_symfile_info)); | |
667 | ||
bd5635a1 RP |
668 | /* Save startup file's range of PC addresses to help blockframe.c |
669 | decide where the bottom of the stack is. */ | |
670 | if (bfd_get_file_flags (abfd) & EXEC_P) | |
671 | { | |
672 | /* Executable file -- record its entry point so we'll recognize | |
673 | the startup file because it contains the entry point. */ | |
674 | entry_point = bfd_get_start_address (abfd); | |
675 | } | |
676 | else | |
677 | { | |
678 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
679 | /* ~0 will not be in any file, we hope. */ | |
680 | entry_point = ~0; | |
681 | /* set the startup file to be an empty range. */ | |
682 | startup_file_start = 0; | |
683 | startup_file_end = 0; | |
684 | } | |
d8ce1326 JG |
685 | /* Save the section number for the text section */ |
686 | if (section = bfd_get_section_by_name(abfd,".text")) | |
687 | text_bfd_scnum = section->index; | |
688 | else | |
689 | text_bfd_scnum = -1; | |
bd5635a1 RP |
690 | } |
691 | ||
692 | /* This function is called for every section; it finds the outer limits | |
693 | of the line table (minimum and maximum file offset) so that the | |
694 | mainline code can read the whole thing for efficiency. */ | |
695 | ||
e1ce8aa5 | 696 | /* ARGSUSED */ |
bd5635a1 RP |
697 | static void |
698 | find_linenos (abfd, asect, vpinfo) | |
699 | bfd *abfd; | |
700 | sec_ptr asect; | |
318bf84f | 701 | PTR vpinfo; |
bd5635a1 RP |
702 | { |
703 | struct coff_symfile_info *info; | |
704 | int size, count; | |
705 | file_ptr offset, maxoff; | |
706 | ||
707 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
708 | count = asect->lineno_count; | |
709 | /* End of warning */ | |
710 | ||
711 | if (count == 0) | |
712 | return; | |
d8ce1326 | 713 | size = count * local_linesz; |
bd5635a1 RP |
714 | |
715 | info = (struct coff_symfile_info *)vpinfo; | |
716 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
717 | offset = asect->line_filepos; | |
718 | /* End of warning */ | |
719 | ||
720 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
721 | info->min_lineno_offset = offset; | |
722 | ||
723 | maxoff = offset + size; | |
724 | if (maxoff > info->max_lineno_offset) | |
725 | info->max_lineno_offset = maxoff; | |
726 | } | |
727 | ||
728 | ||
e1ce8aa5 JK |
729 | /* The BFD for this file -- only good while we're actively reading |
730 | symbols into a psymtab or a symtab. */ | |
731 | ||
732 | static bfd *symfile_bfd; | |
733 | ||
bd5635a1 RP |
734 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
735 | /* FIXME! Addr and Mainline are not used yet -- this will not work for | |
736 | shared libraries or add_file! */ | |
737 | ||
61a7292f | 738 | /* ARGSUSED */ |
9bba3334 | 739 | static void |
bd5635a1 RP |
740 | coff_symfile_read (sf, addr, mainline) |
741 | struct sym_fns *sf; | |
742 | CORE_ADDR addr; | |
743 | int mainline; | |
744 | { | |
745 | struct coff_symfile_info *info = (struct coff_symfile_info *)sf->sym_private; | |
a048c8f5 | 746 | bfd *abfd = sf->objfile->obfd; |
d8ce1326 | 747 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 RP |
748 | char *name = bfd_get_filename (abfd); |
749 | int desc; | |
750 | register int val; | |
751 | int num_symbols; | |
752 | int symtab_offset; | |
753 | int stringtab_offset; | |
754 | ||
755 | symfile_bfd = abfd; /* Kludge for swap routines */ | |
756 | ||
757 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
d8ce1326 | 758 | desc = fileno ((FILE *)(abfd->iostream)); /* File descriptor */ |
bd5635a1 | 759 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
760 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
761 | stringtab_offset = symtab_offset + /* String table file offset */ | |
762 | num_symbols * cdata->local_symesz; | |
763 | ||
764 | /* Set a few file-statics that give us specific information about | |
765 | the particular COFF file format we're reading. */ | |
766 | local_linesz = cdata->local_linesz; | |
767 | local_n_btmask = cdata->local_n_btmask; | |
768 | local_n_btshft = cdata->local_n_btshft; | |
769 | local_n_tmask = cdata->local_n_tmask; | |
770 | local_n_tshift = cdata->local_n_tshift; | |
771 | local_linesz = cdata->local_linesz; | |
772 | local_symesz = cdata->local_symesz; | |
773 | local_auxesz = cdata->local_auxesz; | |
774 | ||
775 | /* Allocate space for raw symbol and aux entries, based on their | |
776 | space requirements as reported by BFD. */ | |
777 | temp_sym = (char *) xmalloc | |
778 | (cdata->local_symesz + cdata->local_auxesz); | |
779 | temp_aux = temp_sym + cdata->local_symesz; | |
780 | make_cleanup (free_current_contents, &temp_sym); | |
bd5635a1 RP |
781 | /* End of warning */ |
782 | ||
bd5635a1 RP |
783 | /* Read the line number table, all at once. */ |
784 | info->min_lineno_offset = 0; | |
785 | info->max_lineno_offset = 0; | |
786 | bfd_map_over_sections (abfd, find_linenos, info); | |
787 | ||
788 | val = init_lineno (desc, info->min_lineno_offset, | |
789 | info->max_lineno_offset - info->min_lineno_offset); | |
790 | if (val < 0) | |
791 | error ("\"%s\": error reading line numbers\n", name); | |
792 | ||
793 | /* Now read the string table, all at once. */ | |
794 | ||
795 | val = init_stringtab (desc, stringtab_offset); | |
796 | if (val < 0) | |
a048c8f5 | 797 | error ("\"%s\": can't get string table", name); |
bd5635a1 RP |
798 | make_cleanup (free_stringtab, 0); |
799 | ||
800 | /* Position to read the symbol table. Do not read it all at once. */ | |
801 | val = lseek (desc, (long)symtab_offset, 0); | |
802 | if (val < 0) | |
803 | perror_with_name (name); | |
804 | ||
318bf84f FF |
805 | init_minimal_symbol_collection (); |
806 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
807 | |
808 | /* Now that the executable file is positioned at symbol table, | |
809 | process it and define symbols accordingly. */ | |
810 | ||
a048c8f5 | 811 | read_coff_symtab (desc, num_symbols, sf->objfile); |
bd5635a1 | 812 | |
318bf84f FF |
813 | iterate_over_symtabs (patch_opaque_types, (PTR) NULL, (PTR) NULL, |
814 | (PTR) NULL); | |
bd5635a1 RP |
815 | |
816 | /* Sort symbols alphabetically within each block. */ | |
817 | ||
818 | sort_all_symtab_syms (); | |
819 | ||
318bf84f FF |
820 | /* Install any minimal symbols that have been collected as the current |
821 | minimal symbols for this objfile. */ | |
bd5635a1 | 822 | |
318bf84f | 823 | install_minimal_symbols (sf -> objfile); |
bd5635a1 RP |
824 | } |
825 | ||
9bba3334 | 826 | static void |
bd5635a1 RP |
827 | coff_new_init () |
828 | { | |
a048c8f5 | 829 | /* Nothin' to do */ |
bd5635a1 RP |
830 | } |
831 | \f | |
bd5635a1 RP |
832 | /* Given pointers to a symbol table in coff style exec file, |
833 | analyze them and create struct symtab's describing the symbols. | |
834 | NSYMS is the number of symbols in the symbol table. | |
835 | We read them one at a time using read_one_sym (). */ | |
836 | ||
837 | static void | |
a048c8f5 | 838 | read_coff_symtab (desc, nsyms, objfile) |
bd5635a1 RP |
839 | int desc; |
840 | int nsyms; | |
a048c8f5 | 841 | struct objfile *objfile; |
bd5635a1 RP |
842 | { |
843 | int newfd; /* Avoid multiple closes on same desc */ | |
844 | FILE *stream; | |
318bf84f | 845 | register struct coff_context_stack *new; |
bd5635a1 RP |
846 | struct coff_symbol coff_symbol; |
847 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
848 | static struct internal_syment main_sym; |
849 | static union internal_auxent main_aux; | |
bd5635a1 | 850 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
851 | static struct internal_syment fcn_sym_saved; |
852 | static union internal_auxent fcn_aux_saved; | |
bd5635a1 RP |
853 | |
854 | /* A .file is open. */ | |
855 | int in_source_file = 0; | |
856 | int num_object_files = 0; | |
857 | int next_file_symnum = -1; | |
858 | ||
859 | /* Name of the current file. */ | |
860 | char *filestring = ""; | |
861 | int depth; | |
862 | int fcn_first_line; | |
863 | int fcn_last_line; | |
864 | int fcn_start_addr; | |
865 | long fcn_line_ptr; | |
866 | struct cleanup *old_chain; | |
867 | ||
868 | ||
869 | newfd = dup (desc); | |
870 | if (newfd == -1) | |
871 | fatal ("Too many open files"); | |
872 | stream = fdopen (newfd, "r"); | |
873 | ||
a048c8f5 JG |
874 | /* These cleanups will be discarded below if we succeed. */ |
875 | old_chain = make_cleanup (free_objfile, objfile); | |
bd5635a1 | 876 | make_cleanup (fclose, stream); |
a048c8f5 | 877 | |
318bf84f | 878 | current_objfile = objfile; |
bd5635a1 RP |
879 | nlist_stream_global = stream; |
880 | nlist_nsyms_global = nsyms; | |
881 | last_source_file = 0; | |
882 | bzero (opaque_type_chain, sizeof opaque_type_chain); | |
883 | ||
cadbb07a JG |
884 | if (type_vector) /* Get rid of previous one */ |
885 | free (type_vector); | |
bd5635a1 | 886 | type_vector_length = 160; |
159a075e SG |
887 | type_vector = (struct type **) |
888 | xmalloc (type_vector_length * sizeof (struct type *)); | |
889 | bzero (type_vector, type_vector_length * sizeof (struct type *)); | |
bd5635a1 | 890 | |
318bf84f | 891 | coff_start_symtab (); |
bd5635a1 RP |
892 | |
893 | symnum = 0; | |
894 | while (symnum < nsyms) | |
895 | { | |
896 | QUIT; /* Make this command interruptable. */ | |
897 | read_one_sym (cs, &main_sym, &main_aux); | |
898 | ||
899 | #ifdef SEM | |
900 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
901 | cs->c_name[2] << 8 | cs->c_name[3]; | |
902 | if (int_sem_val == temp_sem_val) | |
903 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
904 | #endif | |
905 | ||
906 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
907 | { | |
908 | if (last_source_file) | |
318bf84f | 909 | coff_end_symtab (objfile); |
bd5635a1 | 910 | |
318bf84f | 911 | coff_start_symtab (); |
bd5635a1 RP |
912 | complete_symtab ("_globals_", 0, first_object_file_end); |
913 | /* done with all files, everything from here on out is globals */ | |
914 | } | |
915 | ||
916 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
917 | if (!last_source_file && SDB_TYPE (cs->c_type) |
918 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
919 | complete_symtab (filestring, 0, 0); |
920 | ||
921 | /* Typedefs should not be treated as symbol definitions. */ | |
922 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
923 | { | |
318bf84f | 924 | /* record as a minimal symbol. if we get '.bf' next, |
bd5635a1 RP |
925 | * then we undo this step |
926 | */ | |
318bf84f | 927 | record_minimal_symbol (cs->c_name, cs->c_value); |
bd5635a1 RP |
928 | |
929 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
930 | fcn_start_addr = cs->c_value; | |
931 | fcn_cs_saved = *cs; | |
932 | fcn_sym_saved = main_sym; | |
933 | fcn_aux_saved = main_aux; | |
934 | continue; | |
935 | } | |
936 | ||
937 | switch (cs->c_sclass) | |
938 | { | |
939 | case C_EFCN: | |
940 | case C_EXTDEF: | |
941 | case C_ULABEL: | |
942 | case C_USTATIC: | |
943 | case C_LINE: | |
944 | case C_ALIAS: | |
945 | case C_HIDDEN: | |
7e258d18 | 946 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
947 | break; |
948 | ||
949 | case C_FILE: | |
950 | /* | |
951 | * c_value field contains symnum of next .file entry in table | |
952 | * or symnum of first global after last .file. | |
953 | */ | |
954 | next_file_symnum = cs->c_value; | |
955 | filestring = getfilename (&main_aux); | |
956 | /* | |
957 | * Complete symbol table for last object file | |
958 | * containing debugging information. | |
959 | */ | |
960 | if (last_source_file) | |
961 | { | |
318bf84f FF |
962 | coff_end_symtab (objfile); |
963 | coff_start_symtab (); | |
bd5635a1 RP |
964 | } |
965 | in_source_file = 1; | |
966 | break; | |
967 | ||
968 | case C_STAT: | |
969 | if (cs->c_name[0] == '.') { | |
d8ce1326 JG |
970 | if (strcmp (cs->c_name, ".text") == 0) { |
971 | /* FIXME: don't wire in ".text" as section name | |
972 | or symbol name! */ | |
bd5635a1 RP |
973 | if (++num_object_files == 1) { |
974 | /* last address of startup file */ | |
975 | first_object_file_end = cs->c_value + | |
976 | main_aux.x_scn.x_scnlen; | |
977 | } | |
978 | /* Check for in_source_file deals with case of | |
979 | a file with debugging symbols | |
980 | followed by a later file with no symbols. */ | |
981 | if (in_source_file) | |
982 | complete_symtab (filestring, cs->c_value, | |
983 | main_aux.x_scn.x_scnlen); | |
984 | in_source_file = 0; | |
985 | } | |
986 | /* flush rest of '.' symbols */ | |
987 | break; | |
988 | } | |
8714ff35 | 989 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
990 | && cs->c_name[0] == 'L' |
991 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 992 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
993 | || strncmp (cs->c_name,"LC%",3) == 0 |
994 | || strncmp (cs->c_name,"LP%",3) == 0 | |
995 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
996 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
997 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
998 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
999 | /* At least on a 3b1, gcc generates swbeg and string labels | |
1000 | that look like this. Ignore them. */ | |
1001 | break; | |
1002 | /* fall in for static symbols that don't start with '.' */ | |
1003 | case C_EXT: | |
8714ff35 | 1004 | if (!SDB_TYPE (cs->c_type)) { |
d8ce1326 JG |
1005 | /* FIXME: This is BOGUS Will Robinson! |
1006 | Coff should provide the SEC_CODE flag for executable sections, | |
1007 | then if we could look up sections by section number we | |
1008 | could see if the flags indicate SEC_CODE. If so, then | |
318bf84f FF |
1009 | record this symbol as a function in the minimal symbol table. |
1010 | But why are absolute syms recorded as functions, anyway? */ | |
d8ce1326 | 1011 | if (cs->c_secnum <= text_bfd_scnum+1) {/* text or abs */ |
318bf84f | 1012 | record_minimal_symbol (cs->c_name, cs->c_value); |
bd5635a1 RP |
1013 | break; |
1014 | } else { | |
1015 | cs->c_type = T_INT; | |
1016 | } | |
1017 | } | |
318bf84f | 1018 | (void) process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1019 | break; |
1020 | ||
1021 | case C_FCN: | |
1022 | if (strcmp (cs->c_name, ".bf") == 0) | |
1023 | { | |
1024 | within_function = 1; | |
1025 | ||
1026 | /* value contains address of first non-init type code */ | |
1027 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1028 | contains line number of '{' } */ | |
e64fbb3a | 1029 | if (cs->c_naux != 1) |
318bf84f | 1030 | complain (&bf_no_aux_complaint, (char *) cs->c_symnum); |
bd5635a1 RP |
1031 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1032 | ||
318bf84f FF |
1033 | new = (struct coff_context_stack *) |
1034 | xmalloc (sizeof (struct coff_context_stack)); | |
bd5635a1 RP |
1035 | new->depth = depth = 0; |
1036 | new->next = 0; | |
318bf84f | 1037 | coff_context_stack = new; |
bd5635a1 RP |
1038 | new->locals = 0; |
1039 | new->old_blocks = pending_blocks; | |
1040 | new->start_addr = fcn_start_addr; | |
1041 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
1042 | new->name = process_coff_symbol (&fcn_cs_saved, | |
318bf84f | 1043 | &fcn_aux_saved, objfile); |
bd5635a1 RP |
1044 | } |
1045 | else if (strcmp (cs->c_name, ".ef") == 0) | |
1046 | { | |
1047 | /* the value of .ef is the address of epilogue code; | |
1048 | * not useful for gdb | |
1049 | */ | |
1050 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1051 | contains number of lines to '}' */ | |
318bf84f | 1052 | new = coff_context_stack; |
bd5635a1 RP |
1053 | if (new == 0) |
1054 | { | |
318bf84f | 1055 | complain (&ef_complaint, (char *) cs->c_symnum); |
bd5635a1 RP |
1056 | within_function = 0; |
1057 | break; | |
1058 | } | |
e64fbb3a | 1059 | if (cs->c_naux != 1) { |
318bf84f | 1060 | complain (&ef_no_aux_complaint, (char *) cs->c_symnum); |
e64fbb3a JG |
1061 | fcn_last_line = 0x7FFFFFFF; |
1062 | } else { | |
1063 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1064 | } | |
bd5635a1 RP |
1065 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line); |
1066 | ||
318bf84f | 1067 | coff_finish_block (new->name, &coff_local_symbols, new->old_blocks, |
bd5635a1 RP |
1068 | new->start_addr, |
1069 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
1070 | /* This macro should be defined only on | |
1071 | machines where the | |
1072 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1073 | field is always zero. | |
1074 | So use the .bf record information that | |
1075 | points to the epilogue and add the size | |
1076 | of the epilogue. */ | |
318bf84f | 1077 | cs->c_value + FUNCTION_EPILOGUE_SIZE, |
bd5635a1 RP |
1078 | #else |
1079 | fcn_cs_saved.c_value + | |
318bf84f | 1080 | fcn_aux_saved.x_sym.x_misc.x_fsize, |
bd5635a1 | 1081 | #endif |
318bf84f | 1082 | objfile |
bd5635a1 | 1083 | ); |
318bf84f | 1084 | coff_context_stack = 0; |
bd5635a1 RP |
1085 | within_function = 0; |
1086 | free (new); | |
1087 | } | |
1088 | break; | |
1089 | ||
1090 | case C_BLOCK: | |
1091 | if (strcmp (cs->c_name, ".bb") == 0) | |
1092 | { | |
318bf84f FF |
1093 | new = (struct coff_context_stack *) |
1094 | xmalloc (sizeof (struct coff_context_stack)); | |
bd5635a1 RP |
1095 | depth++; |
1096 | new->depth = depth; | |
318bf84f FF |
1097 | new->next = coff_context_stack; |
1098 | coff_context_stack = new; | |
1099 | new->locals = coff_local_symbols; | |
bd5635a1 RP |
1100 | new->old_blocks = pending_blocks; |
1101 | new->start_addr = cs->c_value; | |
1102 | new->name = 0; | |
318bf84f | 1103 | coff_local_symbols = 0; |
bd5635a1 RP |
1104 | } |
1105 | else if (strcmp (cs->c_name, ".eb") == 0) | |
1106 | { | |
318bf84f | 1107 | new = coff_context_stack; |
bd5635a1 RP |
1108 | if (new == 0 || depth != new->depth) |
1109 | error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.", | |
1110 | symnum); | |
318bf84f | 1111 | if (coff_local_symbols && coff_context_stack->next) |
bd5635a1 RP |
1112 | { |
1113 | /* Make a block for the local symbols within. */ | |
318bf84f FF |
1114 | coff_finish_block (0, &coff_local_symbols, new->old_blocks, |
1115 | new->start_addr, cs->c_value, objfile); | |
bd5635a1 RP |
1116 | } |
1117 | depth--; | |
318bf84f FF |
1118 | coff_local_symbols = new->locals; |
1119 | coff_context_stack = new->next; | |
bd5635a1 RP |
1120 | free (new); |
1121 | } | |
1122 | break; | |
bd5635a1 RP |
1123 | |
1124 | default: | |
318bf84f | 1125 | (void) process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1126 | break; |
1127 | } | |
1128 | } | |
1129 | ||
1130 | if (last_source_file) | |
318bf84f | 1131 | coff_end_symtab (objfile); |
bd5635a1 RP |
1132 | fclose (stream); |
1133 | discard_cleanups (old_chain); | |
318bf84f | 1134 | current_objfile = NULL; |
bd5635a1 RP |
1135 | } |
1136 | \f | |
1137 | /* Routines for reading headers and symbols from executable. */ | |
1138 | ||
1139 | #ifdef FIXME | |
1140 | /* Move these XXXMAGIC symbol defns into BFD! */ | |
1141 | ||
1142 | /* Read COFF file header, check magic number, | |
1143 | and return number of symbols. */ | |
1144 | read_file_hdr (chan, file_hdr) | |
1145 | int chan; | |
1146 | FILHDR *file_hdr; | |
1147 | { | |
1148 | lseek (chan, 0L, 0); | |
1149 | if (myread (chan, (char *)file_hdr, FILHSZ) < 0) | |
1150 | return -1; | |
1151 | ||
1152 | switch (file_hdr->f_magic) | |
1153 | { | |
1154 | #ifdef MC68MAGIC | |
1155 | case MC68MAGIC: | |
1156 | #endif | |
1157 | #ifdef NS32GMAGIC | |
1158 | case NS32GMAGIC: | |
1159 | case NS32SMAGIC: | |
1160 | #endif | |
1161 | #ifdef I386MAGIC | |
1162 | case I386MAGIC: | |
1163 | #endif | |
1164 | #ifdef CLIPPERMAGIC | |
1165 | case CLIPPERMAGIC: | |
1166 | #endif | |
1167 | #if defined (MC68KWRMAGIC) \ | |
1168 | && (!defined (MC68MAGIC) || MC68KWRMAGIC != MC68MAGIC) | |
1169 | case MC68KWRMAGIC: | |
1170 | #endif | |
1171 | #ifdef MC68KROMAGIC | |
1172 | case MC68KROMAGIC: | |
1173 | case MC68KPGMAGIC: | |
1174 | #endif | |
1175 | #ifdef MC88DGMAGIC | |
1176 | case MC88DGMAGIC: | |
1177 | #endif | |
1178 | #ifdef MC88MAGIC | |
1179 | case MC88MAGIC: | |
1180 | #endif | |
1181 | #ifdef I960ROMAGIC | |
1182 | case I960ROMAGIC: /* Intel 960 */ | |
1183 | #endif | |
1184 | #ifdef I960RWMAGIC | |
1185 | case I960RWMAGIC: /* Intel 960 */ | |
1186 | #endif | |
1187 | return file_hdr->f_nsyms; | |
1188 | ||
1189 | default: | |
1190 | #ifdef BADMAG | |
1191 | if (BADMAG(file_hdr)) | |
1192 | return -1; | |
1193 | else | |
1194 | return file_hdr->f_nsyms; | |
1195 | #else | |
1196 | return -1; | |
1197 | #endif | |
1198 | } | |
1199 | } | |
1200 | #endif | |
1201 | ||
dcc35536 JG |
1202 | /* Read the next symbol, swap it, and return it in both internal_syment |
1203 | form, and coff_symbol form. Also return its first auxent, if any, | |
1204 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1205 | |
1206 | static void | |
1207 | read_one_sym (cs, sym, aux) | |
1208 | register struct coff_symbol *cs; | |
dcc35536 JG |
1209 | register struct internal_syment *sym; |
1210 | register union internal_auxent *aux; | |
bd5635a1 | 1211 | { |
bd5635a1 RP |
1212 | int i; |
1213 | ||
1214 | cs->c_symnum = symnum; | |
d8ce1326 JG |
1215 | fread (temp_sym, local_symesz, 1, nlist_stream_global); |
1216 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); | |
e64fbb3a JG |
1217 | cs->c_naux = sym->n_numaux & 0xff; |
1218 | if (cs->c_naux >= 1) | |
bd5635a1 | 1219 | { |
d8ce1326 JG |
1220 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
1221 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, | |
1222 | (char *)aux); | |
bd5635a1 RP |
1223 | /* If more than one aux entry, read past it (only the first aux |
1224 | is important). */ | |
e64fbb3a | 1225 | for (i = 1; i < cs->c_naux; i++) |
d8ce1326 | 1226 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
bd5635a1 RP |
1227 | } |
1228 | cs->c_name = getsymname (sym); | |
1229 | cs->c_value = sym->n_value; | |
1230 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1231 | cs->c_secnum = sym->n_scnum; | |
1232 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1233 | if (!SDB_TYPE (cs->c_type)) |
1234 | cs->c_type = 0; | |
bd5635a1 | 1235 | |
e64fbb3a | 1236 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1237 | } |
1238 | \f | |
1239 | /* Support for string table handling */ | |
1240 | ||
1241 | static char *stringtab = NULL; | |
1242 | ||
1243 | static int | |
1244 | init_stringtab (chan, offset) | |
1245 | int chan; | |
1246 | long offset; | |
1247 | { | |
1248 | long length; | |
1249 | int val; | |
1250 | unsigned char lengthbuf[4]; | |
1251 | ||
1252 | if (stringtab) | |
1253 | { | |
1254 | free (stringtab); | |
1255 | stringtab = NULL; | |
1256 | } | |
1257 | ||
1258 | if (lseek (chan, offset, 0) < 0) | |
1259 | return -1; | |
1260 | ||
1261 | val = myread (chan, (char *)lengthbuf, sizeof lengthbuf); | |
dcc35536 | 1262 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1263 | |
1264 | /* If no string table is needed, then the file may end immediately | |
1265 | after the symbols. Just return with `stringtab' set to null. */ | |
1266 | if (val != sizeof length || length < sizeof length) | |
1267 | return 0; | |
1268 | ||
1269 | stringtab = (char *) xmalloc (length); | |
1270 | if (stringtab == NULL) | |
1271 | return -1; | |
1272 | ||
1273 | bcopy (&length, stringtab, sizeof length); | |
1274 | if (length == sizeof length) /* Empty table -- just the count */ | |
1275 | return 0; | |
1276 | ||
1277 | val = myread (chan, stringtab + sizeof length, length - sizeof length); | |
1278 | if (val != length - sizeof length || stringtab[length - 1] != '\0') | |
1279 | return -1; | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static void | |
1285 | free_stringtab () | |
1286 | { | |
1287 | if (stringtab) | |
1288 | free (stringtab); | |
1289 | stringtab = NULL; | |
1290 | } | |
1291 | ||
1292 | static char * | |
1293 | getsymname (symbol_entry) | |
dcc35536 | 1294 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1295 | { |
1296 | static char buffer[SYMNMLEN+1]; | |
1297 | char *result; | |
1298 | ||
dcc35536 | 1299 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1300 | { |
dcc35536 | 1301 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1302 | } |
1303 | else | |
1304 | { | |
dcc35536 | 1305 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1306 | buffer[SYMNMLEN] = '\0'; |
1307 | result = buffer; | |
1308 | } | |
1309 | return result; | |
1310 | } | |
1311 | ||
1312 | static char * | |
1313 | getfilename (aux_entry) | |
dcc35536 | 1314 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1315 | { |
1316 | static char buffer[BUFSIZ]; | |
1317 | register char *temp; | |
1318 | char *result; | |
bd5635a1 RP |
1319 | |
1320 | #ifndef COFF_NO_LONG_FILE_NAMES | |
8aa13b87 JK |
1321 | #if defined (x_zeroes) |
1322 | /* Data General. */ | |
1323 | if (aux_entry->x_zeroes == 0) | |
1324 | strcpy (buffer, stringtab + aux_entry->x_offset); | |
1325 | #else /* no x_zeroes */ | |
bd5635a1 RP |
1326 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1327 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
8aa13b87 | 1328 | #endif /* no x_zeroes */ |
bd5635a1 RP |
1329 | else |
1330 | #endif /* COFF_NO_LONG_FILE_NAMES */ | |
1331 | { | |
1332 | #if defined (x_name) | |
1333 | /* Data General. */ | |
1334 | strncpy (buffer, aux_entry->x_name, FILNMLEN); | |
1335 | #else | |
1336 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1337 | #endif | |
1338 | buffer[FILNMLEN] = '\0'; | |
1339 | } | |
1340 | result = buffer; | |
318bf84f | 1341 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1342 | result = temp + 1; |
1343 | return (result); | |
1344 | } | |
1345 | \f | |
1346 | /* Support for line number handling */ | |
1347 | static char *linetab = NULL; | |
1348 | static long linetab_offset; | |
1349 | static unsigned long linetab_size; | |
1350 | ||
dcc35536 JG |
1351 | /* Read in all the line numbers for fast lookups later. Leave them in |
1352 | external (unswapped) format in memory; we'll swap them as we enter | |
1353 | them into GDB's data structures. */ | |
bd5635a1 RP |
1354 | |
1355 | static int | |
1356 | init_lineno (chan, offset, size) | |
1357 | int chan; | |
1358 | long offset; | |
1359 | int size; | |
1360 | { | |
1361 | int val; | |
bd5635a1 | 1362 | |
61a7292f SG |
1363 | linetab_offset = offset; |
1364 | linetab_size = size; | |
1365 | ||
1366 | if (size == 0) | |
1367 | return 0; | |
1368 | ||
bd5635a1 RP |
1369 | if (lseek (chan, offset, 0) < 0) |
1370 | return -1; | |
1371 | ||
e64fbb3a JG |
1372 | /* Allocate the desired table, plus a sentinel */ |
1373 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 RP |
1374 | |
1375 | val = myread (chan, linetab, size); | |
1376 | if (val != size) | |
1377 | return -1; | |
1378 | ||
e64fbb3a JG |
1379 | /* Terminate it with an all-zero sentinel record */ |
1380 | bzero (linetab + size, local_linesz); | |
1381 | ||
bd5635a1 RP |
1382 | make_cleanup (free, linetab); /* Be sure it gets de-allocated. */ |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | #if !defined (L_LNNO32) | |
1387 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1388 | #endif | |
1389 | ||
1390 | static void | |
1391 | enter_linenos (file_offset, first_line, last_line) | |
1392 | long file_offset; | |
1393 | register int first_line; | |
1394 | register int last_line; | |
1395 | { | |
1396 | register char *rawptr; | |
dcc35536 | 1397 | struct internal_lineno lptr; |
bd5635a1 RP |
1398 | |
1399 | if (file_offset < linetab_offset) | |
1400 | { | |
318bf84f | 1401 | complain (&lineno_complaint, (char *) file_offset); |
63989338 JG |
1402 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1403 | return; | |
1404 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1405 | } |
1406 | ||
1407 | rawptr = &linetab[file_offset - linetab_offset]; | |
1408 | ||
1409 | /* skip first line entry for each function */ | |
d8ce1326 | 1410 | rawptr += local_linesz; |
bd5635a1 RP |
1411 | /* line numbers start at one for the first line of the function */ |
1412 | first_line--; | |
1413 | ||
dcc35536 | 1414 | for (;;) { |
d8ce1326 JG |
1415 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1416 | rawptr += local_linesz; | |
e64fbb3a | 1417 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1418 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
318bf84f | 1419 | coff_record_line (first_line + L_LNNO32 (&lptr), lptr.l_addr.l_paddr); |
dcc35536 JG |
1420 | else |
1421 | break; | |
1422 | } | |
bd5635a1 RP |
1423 | } |
1424 | \f | |
bd5635a1 RP |
1425 | static void |
1426 | patch_type (type, real_type) | |
1427 | struct type *type; | |
1428 | struct type *real_type; | |
1429 | { | |
1430 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1431 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1432 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1433 | ||
1434 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1435 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1436 | TYPE_FIELDS (target) = (struct field *) | |
318bf84f | 1437 | obstack_alloc (¤t_objfile -> type_obstack, field_size); |
bd5635a1 RP |
1438 | |
1439 | bcopy (TYPE_FIELDS (real_target), TYPE_FIELDS (target), field_size); | |
1440 | ||
1441 | if (TYPE_NAME (real_target)) | |
1442 | { | |
1443 | if (TYPE_NAME (target)) | |
1444 | free (TYPE_NAME (target)); | |
58ae87f6 | 1445 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1446 | } |
1447 | } | |
1448 | ||
7e258d18 | 1449 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
318bf84f | 1450 | so that they can be used to print out opaque data structures properly. |
bd5635a1 | 1451 | |
318bf84f FF |
1452 | This is called via iterate_over_symtabs, and thus simply returns NULL |
1453 | for each time it is called, to indicate that the iteration should | |
1454 | continue. */ | |
bd5635a1 | 1455 | |
318bf84f FF |
1456 | /* ARGSUSED */ |
1457 | static PTR | |
1458 | patch_opaque_types (objfile, s, arg1, arg2, arg3) | |
1459 | struct objfile *objfile; | |
1460 | struct symtab *s; | |
1461 | PTR arg1; | |
1462 | PTR arg2; | |
1463 | PTR arg3; | |
1464 | { | |
1465 | register struct block *b; | |
1466 | register int i; | |
1467 | register struct symbol *real_sym; | |
1468 | ||
1469 | /* Go through the per-file symbols only */ | |
1470 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1471 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1472 | { |
318bf84f FF |
1473 | /* Find completed typedefs to use to fix opaque ones. |
1474 | Remove syms from the chain when their types are stored, | |
1475 | but search the whole chain, as there may be several syms | |
1476 | from different files with the same name. */ | |
1477 | real_sym = BLOCK_SYM (b, i); | |
1478 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1479 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1480 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1481 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1482 | { |
318bf84f FF |
1483 | register char *name = SYMBOL_NAME (real_sym); |
1484 | register int hash = hashname (name); | |
1485 | register struct symbol *sym, *prev; | |
1486 | ||
1487 | prev = 0; | |
1488 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1489 | { |
318bf84f FF |
1490 | if (name[0] == SYMBOL_NAME (sym)[0] && |
1491 | !strcmp (name + 1, SYMBOL_NAME (sym) + 1)) | |
bd5635a1 | 1492 | { |
318bf84f | 1493 | if (prev) |
bd5635a1 | 1494 | { |
318bf84f | 1495 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1496 | } |
1497 | else | |
1498 | { | |
318bf84f | 1499 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1500 | } |
318bf84f FF |
1501 | |
1502 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1503 | ||
1504 | if (prev) | |
1505 | { | |
1506 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | sym = opaque_type_chain[hash]; | |
1511 | } | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | prev = sym; | |
1516 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1517 | } |
1518 | } | |
1519 | } | |
1520 | } | |
318bf84f | 1521 | return (NULL); |
bd5635a1 RP |
1522 | } |
1523 | \f | |
bd5635a1 | 1524 | static struct symbol * |
318bf84f | 1525 | process_coff_symbol (cs, aux, objfile) |
bd5635a1 | 1526 | register struct coff_symbol *cs; |
dcc35536 | 1527 | register union internal_auxent *aux; |
318bf84f | 1528 | struct objfile *objfile; |
bd5635a1 RP |
1529 | { |
1530 | register struct symbol *sym | |
318bf84f | 1531 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
bd5635a1 RP |
1532 | char *name; |
1533 | #ifdef NAMES_HAVE_UNDERSCORE | |
1534 | int offset = 1; | |
1535 | #else | |
1536 | int offset = 0; | |
1537 | #endif | |
318bf84f | 1538 | struct type *temptype; |
bd5635a1 RP |
1539 | |
1540 | bzero (sym, sizeof (struct symbol)); | |
1541 | name = cs->c_name; | |
1542 | name = (name[0] == '_' ? name + offset : name); | |
318bf84f | 1543 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, strlen (name)); |
bd5635a1 RP |
1544 | |
1545 | /* default assumptions */ | |
1546 | SYMBOL_VALUE (sym) = cs->c_value; | |
1547 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1548 | ||
1549 | if (ISFCN (cs->c_type)) | |
1550 | { | |
d8ce1326 JG |
1551 | #if 0 |
1552 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1553 | /* Generate a template for the type of this function. The | |
1554 | types of the arguments will be added as we read the symbol | |
1555 | table. */ | |
1556 | struct type *new = (struct type *) | |
318bf84f | 1557 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 JG |
1558 | |
1559 | bcopy(lookup_function_type (decode_function_type (cs, cs->c_type, aux)), | |
1560 | new, sizeof(struct type)); | |
1561 | SYMBOL_TYPE (sym) = new; | |
1562 | in_function_type = SYMBOL_TYPE(sym); | |
1563 | #else | |
1564 | SYMBOL_TYPE(sym) = | |
1565 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1566 | #endif | |
1567 | ||
bd5635a1 RP |
1568 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1569 | if (cs->c_sclass == C_STAT) | |
318bf84f | 1570 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 | 1571 | else if (cs->c_sclass == C_EXT) |
318bf84f | 1572 | coff_add_symbol_to_list (sym, &coff_global_symbols); |
bd5635a1 RP |
1573 | } |
1574 | else | |
1575 | { | |
1576 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1577 | switch (cs->c_sclass) | |
1578 | { | |
1579 | case C_NULL: | |
1580 | break; | |
1581 | ||
1582 | case C_AUTO: | |
1583 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
318bf84f | 1584 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1585 | break; |
1586 | ||
1587 | case C_EXT: | |
1588 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1589 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
318bf84f | 1590 | coff_add_symbol_to_list (sym, &coff_global_symbols); |
bd5635a1 RP |
1591 | break; |
1592 | ||
1593 | case C_STAT: | |
1594 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1595 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
1596 | if (within_function) { | |
1597 | /* Static symbol of local scope */ | |
318bf84f | 1598 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1599 | } |
1600 | else { | |
1601 | /* Static symbol at top level of file */ | |
318bf84f | 1602 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1603 | } |
1604 | break; | |
1605 | ||
d8ce1326 JG |
1606 | #ifdef C_GLBLREG /* AMD coff */ |
1607 | case C_GLBLREG: | |
1608 | #endif | |
bd5635a1 RP |
1609 | case C_REG: |
1610 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1611 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
318bf84f | 1612 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1613 | break; |
1614 | ||
1615 | case C_LABEL: | |
1616 | break; | |
1617 | ||
1618 | case C_ARG: | |
1619 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1620 | #if 0 |
7e258d18 | 1621 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1622 | /* Add parameter to function. */ |
1623 | add_param_to_type(&in_function_type,sym); | |
1624 | #endif | |
318bf84f | 1625 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1626 | #if !defined (BELIEVE_PCC_PROMOTION) |
1627 | /* If PCC says a parameter is a short or a char, | |
1628 | it is really an int. */ | |
318bf84f FF |
1629 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1630 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1631 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1632 | { | |
1633 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1634 | ? lookup_fundamental_type (current_objfile, | |
1635 | FT_UNSIGNED_INTEGER) | |
1636 | : temptype; | |
1637 | } | |
bd5635a1 RP |
1638 | #endif |
1639 | break; | |
1640 | ||
1641 | case C_REGPARM: | |
1642 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1643 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
318bf84f | 1644 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1645 | #if !defined (BELIEVE_PCC_PROMOTION) |
1646 | /* If PCC says a parameter is a short or a char, | |
1647 | it is really an int. */ | |
318bf84f FF |
1648 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1649 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1650 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1651 | { | |
1652 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1653 | ? lookup_fundamental_type (current_objfile, | |
1654 | FT_UNSIGNED_INTEGER) | |
1655 | : temptype; | |
1656 | } | |
bd5635a1 RP |
1657 | #endif |
1658 | break; | |
1659 | ||
1660 | case C_TPDEF: | |
1661 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1662 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1663 | ||
1664 | /* If type has no name, give it one */ | |
318bf84f FF |
1665 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1666 | TYPE_NAME (SYMBOL_TYPE (sym)) = concat (SYMBOL_NAME (sym), NULL); | |
bd5635a1 RP |
1667 | |
1668 | /* Keep track of any type which points to empty structured type, | |
1669 | so it can be filled from a definition from another file */ | |
1670 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && | |
1671 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0) | |
1672 | { | |
1673 | register int i = hashname (SYMBOL_NAME (sym)); | |
1674 | ||
1675 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1676 | opaque_type_chain[i] = sym; | |
1677 | } | |
318bf84f | 1678 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1679 | break; |
1680 | ||
1681 | case C_STRTAG: | |
1682 | case C_UNTAG: | |
1683 | case C_ENTAG: | |
1684 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1685 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
318bf84f | 1686 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
bd5635a1 RP |
1687 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1688 | = concat ("", | |
1689 | (cs->c_sclass == C_ENTAG | |
1690 | ? "enum " | |
1691 | : (cs->c_sclass == C_STRTAG | |
1692 | ? "struct " : "union ")), | |
58ae87f6 | 1693 | SYMBOL_NAME (sym), NULL); |
318bf84f | 1694 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1695 | break; |
1696 | ||
1697 | default: | |
1698 | break; | |
1699 | } | |
1700 | } | |
1701 | return sym; | |
1702 | } | |
1703 | \f | |
1704 | /* Decode a coff type specifier; | |
1705 | return the type that is meant. */ | |
1706 | ||
1707 | static | |
1708 | struct type * | |
1709 | decode_type (cs, c_type, aux) | |
1710 | register struct coff_symbol *cs; | |
1711 | unsigned int c_type; | |
dcc35536 | 1712 | register union internal_auxent *aux; |
bd5635a1 RP |
1713 | { |
1714 | register struct type *type = 0; | |
1715 | unsigned int new_c_type; | |
1716 | ||
1717 | if (c_type & ~N_BTMASK) | |
1718 | { | |
1719 | new_c_type = DECREF (c_type); | |
1720 | if (ISPTR (c_type)) | |
1721 | { | |
1722 | type = decode_type (cs, new_c_type, aux); | |
1723 | type = lookup_pointer_type (type); | |
1724 | } | |
1725 | else if (ISFCN (c_type)) | |
1726 | { | |
1727 | type = decode_type (cs, new_c_type, aux); | |
1728 | type = lookup_function_type (type); | |
1729 | } | |
1730 | else if (ISARY (c_type)) | |
1731 | { | |
1732 | int i, n; | |
1733 | register unsigned short *dim; | |
1734 | struct type *base_type; | |
1735 | ||
1736 | /* Define an array type. */ | |
1737 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1738 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1739 | cs->c_naux = 0; |
bd5635a1 RP |
1740 | |
1741 | /* shift the indices down */ | |
1742 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1743 | i = 1; | |
1744 | n = dim[0]; | |
1745 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1746 | *dim = *(dim + 1); | |
1747 | *dim = 0; | |
1748 | ||
1749 | type = (struct type *) | |
318bf84f FF |
1750 | obstack_alloc (¤t_objfile -> type_obstack, |
1751 | sizeof (struct type)); | |
bd5635a1 | 1752 | bzero (type, sizeof (struct type)); |
318bf84f | 1753 | TYPE_OBJFILE (type) = current_objfile; |
bd5635a1 RP |
1754 | |
1755 | base_type = decode_type (cs, new_c_type, aux); | |
1756 | ||
1757 | TYPE_CODE (type) = TYPE_CODE_ARRAY; | |
1758 | TYPE_TARGET_TYPE (type) = base_type; | |
1759 | TYPE_LENGTH (type) = n * TYPE_LENGTH (base_type); | |
1760 | } | |
1761 | return type; | |
1762 | } | |
1763 | ||
1764 | /* Reference to existing type */ | |
e64fbb3a | 1765 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1766 | { |
cadbb07a | 1767 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); |
bd5635a1 RP |
1768 | return type; |
1769 | } | |
1770 | ||
1771 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1772 | } | |
1773 | ||
1774 | /* Decode a coff type specifier for function definition; | |
1775 | return the type that the function returns. */ | |
1776 | ||
1777 | static | |
1778 | struct type * | |
1779 | decode_function_type (cs, c_type, aux) | |
1780 | register struct coff_symbol *cs; | |
1781 | unsigned int c_type; | |
dcc35536 | 1782 | register union internal_auxent *aux; |
bd5635a1 | 1783 | { |
6988f5c0 | 1784 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1785 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1786 | |
1787 | return decode_type (cs, DECREF (c_type), aux); | |
1788 | } | |
1789 | \f | |
1790 | /* basic C types */ | |
1791 | ||
1792 | static | |
1793 | struct type * | |
1794 | decode_base_type (cs, c_type, aux) | |
1795 | register struct coff_symbol *cs; | |
1796 | unsigned int c_type; | |
dcc35536 | 1797 | register union internal_auxent *aux; |
bd5635a1 RP |
1798 | { |
1799 | struct type *type; | |
1800 | ||
1801 | switch (c_type) | |
1802 | { | |
1803 | case T_NULL: | |
1804 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1805 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1806 | |
8aa13b87 JK |
1807 | #if 0 |
1808 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1809 | #ifdef T_ARG |
1810 | case T_ARG: | |
1811 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1812 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1813 | #endif |
8aa13b87 | 1814 | #endif /* 0 */ |
bd5635a1 RP |
1815 | |
1816 | #ifdef T_VOID | |
1817 | case T_VOID: | |
1818 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1819 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1820 | #endif |
1821 | ||
1822 | case T_CHAR: | |
318bf84f | 1823 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1824 | |
1825 | case T_SHORT: | |
318bf84f | 1826 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1827 | |
1828 | case T_INT: | |
318bf84f | 1829 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1830 | |
1831 | case T_LONG: | |
318bf84f | 1832 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1833 | |
1834 | case T_FLOAT: | |
318bf84f | 1835 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1836 | |
1837 | case T_DOUBLE: | |
318bf84f | 1838 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1839 | |
1840 | case T_STRUCT: | |
e64fbb3a | 1841 | if (cs->c_naux != 1) |
bd5635a1 RP |
1842 | { |
1843 | /* anonymous structure type */ | |
1844 | type = coff_alloc_type (cs->c_symnum); | |
1845 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
58ae87f6 | 1846 | TYPE_NAME (type) = concat ("struct ", "<opaque>", NULL); |
be8303da | 1847 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1848 | TYPE_LENGTH (type) = 0; |
1849 | TYPE_FIELDS (type) = 0; | |
1850 | TYPE_NFIELDS (type) = 0; | |
1851 | } | |
1852 | else | |
1853 | { | |
318bf84f | 1854 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1855 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1856 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1857 | } |
1858 | return type; | |
1859 | ||
1860 | case T_UNION: | |
e64fbb3a | 1861 | if (cs->c_naux != 1) |
bd5635a1 RP |
1862 | { |
1863 | /* anonymous union type */ | |
1864 | type = coff_alloc_type (cs->c_symnum); | |
58ae87f6 | 1865 | TYPE_NAME (type) = concat ("union ", "<opaque>", NULL); |
be8303da | 1866 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1867 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1868 | TYPE_LENGTH (type) = 0; |
1869 | TYPE_FIELDS (type) = 0; | |
1870 | TYPE_NFIELDS (type) = 0; | |
1871 | } | |
1872 | else | |
1873 | { | |
318bf84f | 1874 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1875 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1876 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1877 | } |
1878 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1879 | return type; | |
1880 | ||
1881 | case T_ENUM: | |
318bf84f | 1882 | return coff_read_enum_type (cs->c_symnum, |
bd5635a1 | 1883 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1884 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1885 | |
1886 | case T_MOE: | |
1887 | /* shouldn't show up here */ | |
1888 | break; | |
1889 | ||
1890 | case T_UCHAR: | |
318bf84f | 1891 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1892 | |
1893 | case T_USHORT: | |
318bf84f | 1894 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1895 | |
1896 | case T_UINT: | |
318bf84f | 1897 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1898 | |
1899 | case T_ULONG: | |
318bf84f | 1900 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1901 | } |
7e258d18 | 1902 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1903 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1904 | } |
1905 | \f | |
1906 | /* This page contains subroutines of read_type. */ | |
1907 | ||
1908 | /* Read the description of a structure (or union type) | |
1909 | and return an object describing the type. */ | |
1910 | ||
1911 | static struct type * | |
318bf84f | 1912 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1913 | int index; |
1914 | int length; | |
1915 | int lastsym; | |
1916 | { | |
1917 | struct nextfield | |
1918 | { | |
1919 | struct nextfield *next; | |
1920 | struct field field; | |
1921 | }; | |
1922 | ||
1923 | register struct type *type; | |
1924 | register struct nextfield *list = 0; | |
1925 | struct nextfield *new; | |
1926 | int nfields = 0; | |
1927 | register int n; | |
1928 | char *name; | |
1929 | #ifdef NAMES_HAVE_UNDERSCORE | |
1930 | int offset = 1; | |
1931 | #else | |
1932 | int offset = 0; | |
1933 | #endif | |
1934 | struct coff_symbol member_sym; | |
1935 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1936 | struct internal_syment sub_sym; |
1937 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1938 | int done = 0; |
1939 | ||
1940 | type = coff_alloc_type (index); | |
1941 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1942 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1943 | TYPE_LENGTH (type) = length; |
1944 | ||
1945 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1946 | { | |
1947 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1948 | name = ms->c_name; | |
1949 | name = (name[0] == '_' ? name + offset : name); | |
1950 | ||
1951 | switch (ms->c_sclass) | |
1952 | { | |
1953 | case C_MOS: | |
1954 | case C_MOU: | |
1955 | ||
1956 | /* Get space to record the next field's data. */ | |
1957 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1958 | new->next = list; | |
1959 | list = new; | |
1960 | ||
1961 | /* Save the data. */ | |
1962 | list->field.name = savestring (name, strlen (name)); | |
1963 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1964 | list->field.bitpos = 8 * ms->c_value; | |
1965 | list->field.bitsize = 0; | |
1966 | nfields++; | |
1967 | break; | |
1968 | ||
1969 | case C_FIELD: | |
1970 | ||
1971 | /* Get space to record the next field's data. */ | |
1972 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1973 | new->next = list; | |
1974 | list = new; | |
1975 | ||
1976 | /* Save the data. */ | |
1977 | list->field.name = savestring (name, strlen (name)); | |
1978 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1979 | list->field.bitpos = ms->c_value; | |
1980 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
1981 | nfields++; | |
1982 | break; | |
1983 | ||
1984 | case C_EOS: | |
1985 | done = 1; | |
1986 | break; | |
1987 | } | |
1988 | } | |
1989 | /* Now create the vector of fields, and record how big it is. */ | |
1990 | ||
1991 | TYPE_NFIELDS (type) = nfields; | |
1992 | TYPE_FIELDS (type) = (struct field *) | |
318bf84f FF |
1993 | obstack_alloc (¤t_objfile -> type_obstack, |
1994 | sizeof (struct field) * nfields); | |
bd5635a1 RP |
1995 | |
1996 | /* Copy the saved-up fields into the field vector. */ | |
1997 | ||
1998 | for (n = nfields; list; list = list->next) | |
1999 | TYPE_FIELD (type, --n) = list->field; | |
2000 | ||
2001 | return type; | |
2002 | } | |
2003 | \f | |
2004 | /* Read a definition of an enumeration type, | |
2005 | and create and return a suitable type object. | |
2006 | Also defines the symbols that represent the values of the type. */ | |
e1ce8aa5 | 2007 | /* Currently assumes it's sizeof (int) and doesn't use length. */ |
bd5635a1 | 2008 | |
61a7292f | 2009 | /* ARGSUSED */ |
bd5635a1 | 2010 | static struct type * |
318bf84f | 2011 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
2012 | int index; |
2013 | int length; | |
2014 | int lastsym; | |
2015 | { | |
2016 | register struct symbol *sym; | |
2017 | register struct type *type; | |
2018 | int nsyms = 0; | |
2019 | int done = 0; | |
318bf84f | 2020 | struct coff_pending **symlist; |
bd5635a1 RP |
2021 | struct coff_symbol member_sym; |
2022 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
2023 | struct internal_syment sub_sym; |
2024 | union internal_auxent sub_aux; | |
318bf84f | 2025 | struct coff_pending *osyms, *syms; |
bd5635a1 RP |
2026 | register int n; |
2027 | char *name; | |
2028 | #ifdef NAMES_HAVE_UNDERSCORE | |
2029 | int offset = 1; | |
2030 | #else | |
2031 | int offset = 0; | |
2032 | #endif | |
2033 | ||
2034 | type = coff_alloc_type (index); | |
2035 | if (within_function) | |
318bf84f | 2036 | symlist = &coff_local_symbols; |
bd5635a1 | 2037 | else |
318bf84f | 2038 | symlist = &coff_file_symbols; |
bd5635a1 RP |
2039 | osyms = *symlist; |
2040 | ||
2041 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2042 | { | |
2043 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2044 | name = ms->c_name; | |
2045 | name = (name[0] == '_' ? name + offset : name); | |
2046 | ||
2047 | switch (ms->c_sclass) | |
2048 | { | |
2049 | case C_MOE: | |
2050 | sym = (struct symbol *) xmalloc (sizeof (struct symbol)); | |
2051 | bzero (sym, sizeof (struct symbol)); | |
2052 | ||
2053 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); | |
2054 | SYMBOL_CLASS (sym) = LOC_CONST; | |
2055 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2056 | SYMBOL_VALUE (sym) = ms->c_value; | |
318bf84f | 2057 | coff_add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
2058 | nsyms++; |
2059 | break; | |
2060 | ||
2061 | case C_EOS: | |
2062 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2063 | up the count of how many symbols to read. So stop | |
2064 | on .eos. */ | |
2065 | done = 1; | |
2066 | break; | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | /* Now fill in the fields of the type-structure. */ | |
2071 | ||
be8303da | 2072 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; |
bd5635a1 RP |
2073 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2074 | TYPE_NFIELDS (type) = nsyms; | |
2075 | TYPE_FIELDS (type) = (struct field *) | |
318bf84f FF |
2076 | obstack_alloc (¤t_objfile -> type_obstack, |
2077 | sizeof (struct field) * nsyms); | |
bd5635a1 RP |
2078 | |
2079 | /* Find the symbols for the values and put them into the type. | |
2080 | The symbols can be found in the symlist that we put them on | |
2081 | to cause them to be defined. osyms contains the old value | |
2082 | of that symlist; everything up to there was defined by us. */ | |
2083 | ||
2084 | for (syms = *symlist, n = nsyms; syms != osyms; syms = syms->next) | |
2085 | { | |
2086 | SYMBOL_TYPE (syms->symbol) = type; | |
2087 | TYPE_FIELD_NAME (type, --n) = SYMBOL_NAME (syms->symbol); | |
2088 | TYPE_FIELD_VALUE (type, n) = 0; | |
2089 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (syms->symbol); | |
2090 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2091 | } | |
d8ce1326 JG |
2092 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ |
2093 | if(TYPE_NFIELDS(type) == 2 && | |
2094 | ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") && | |
2095 | !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2096 | (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2097 | !strcmp(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
2098 | TYPE_CODE(type) = TYPE_CODE_BOOL; | |
bd5635a1 RP |
2099 | return type; |
2100 | } | |
2101 | ||
2102 | /* Register our ability to parse symbols for coff BFD files */ | |
2103 | ||
2104 | static struct sym_fns coff_sym_fns = | |
2105 | { | |
2106 | "coff", 4, | |
61a7292f | 2107 | coff_new_init, coff_symfile_init, coff_symfile_read, |
bd5635a1 RP |
2108 | }; |
2109 | ||
2110 | void | |
2111 | _initialize_coffread () | |
2112 | { | |
2113 | add_symtab_fns(&coff_sym_fns); | |
2114 | } |