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" |
3624c875 | 27 | #include "objfiles.h" |
318bf84f | 28 | #include "buildsym.h" |
bd5635a1 | 29 | #include <obstack.h> |
318bf84f | 30 | |
bd5635a1 RP |
31 | #include <string.h> |
32 | ||
f5f0679a | 33 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
63989338 JG |
34 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
35 | ||
8714ff35 JK |
36 | /* To be an sdb debug type, type must have at least a basic or primary |
37 | derived type. Using this rather than checking against T_NULL is | |
ab8f22a9 JK |
38 | said to prevent core dumps if we try to operate on Michael Bloom |
39 | dbx-in-coff file. */ | |
8714ff35 JK |
40 | |
41 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
42 | ||
d8ce1326 JG |
43 | /* |
44 | * Convert from an sdb register number to an internal gdb register number. | |
45 | * This should be defined in tm.h, if REGISTER_NAMES is not set up | |
46 | * to map one to one onto the sdb register numbers. | |
47 | */ | |
48 | #ifndef SDB_REG_TO_REGNUM | |
49 | # define SDB_REG_TO_REGNUM(value) (value) | |
50 | #endif | |
51 | ||
bd5635a1 RP |
52 | /* Core address of start and end of text of current source file. |
53 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
54 | ||
55 | static CORE_ADDR cur_src_start_addr; | |
56 | static CORE_ADDR cur_src_end_addr; | |
57 | ||
58 | /* Core address of the end of the first object file. */ | |
59 | static CORE_ADDR first_object_file_end; | |
60 | ||
bd5635a1 RP |
61 | /* The addresses of the symbol table stream and number of symbols |
62 | of the object file we are reading (as copied into core). */ | |
63 | ||
64 | static FILE *nlist_stream_global; | |
65 | static int nlist_nsyms_global; | |
66 | ||
bd5635a1 RP |
67 | /* Vector of line number information. */ |
68 | ||
69 | static struct linetable *line_vector; | |
70 | ||
71 | /* Index of next entry to go in line_vector_index. */ | |
72 | ||
73 | static int line_vector_index; | |
74 | ||
75 | /* Last line number recorded in the line vector. */ | |
76 | ||
77 | static int prev_line_number; | |
78 | ||
79 | /* Number of elements allocated for line_vector currently. */ | |
80 | ||
81 | static int line_vector_length; | |
82 | ||
d8ce1326 JG |
83 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
84 | ||
85 | static char *temp_sym; | |
86 | static char *temp_aux; | |
87 | ||
88 | /* Local variables that hold the shift and mask values for the | |
89 | COFF file that we are currently reading. These come back to us | |
90 | from BFD, and are referenced by their macro names, as well as | |
91 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
92 | macros from ../internalcoff.h . */ | |
93 | ||
94 | static unsigned local_n_btmask; | |
95 | static unsigned local_n_btshft; | |
96 | static unsigned local_n_tmask; | |
97 | static unsigned local_n_tshift; | |
98 | ||
99 | #define N_BTMASK local_n_btmask | |
100 | #define N_BTSHFT local_n_btshft | |
101 | #define N_TMASK local_n_tmask | |
102 | #define N_TSHIFT local_n_tshift | |
103 | ||
104 | /* Local variables that hold the sizes in the file of various COFF structures. | |
105 | (We only need to know this to read them from the file -- BFD will then | |
106 | translate the data in them, into `internal_xxx' structs in the right | |
107 | byte order, alignment, etc.) */ | |
108 | ||
109 | static unsigned local_linesz; | |
110 | static unsigned local_symesz; | |
111 | static unsigned local_auxesz; | |
112 | ||
113 | ||
bd5635a1 RP |
114 | /* Chain of typedefs of pointers to empty struct/union types. |
115 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
116 | ||
bd5635a1 RP |
117 | static struct symbol *opaque_type_chain[HASHSIZE]; |
118 | ||
119 | /* Record the symbols defined for each context in a list. | |
120 | We don't create a struct block for the context until we | |
121 | know how long to make it. */ | |
122 | ||
318bf84f | 123 | struct coff_pending |
bd5635a1 | 124 | { |
318bf84f | 125 | struct coff_pending *next; |
bd5635a1 RP |
126 | struct symbol *symbol; |
127 | }; | |
128 | ||
129 | /* Here are the three lists that symbols are put on. */ | |
130 | ||
318bf84f | 131 | struct coff_pending *coff_file_symbols; /* static at top level, and types */ |
bd5635a1 | 132 | |
318bf84f | 133 | struct coff_pending *coff_global_symbols; /* global functions and variables */ |
bd5635a1 | 134 | |
318bf84f | 135 | struct coff_pending *coff_local_symbols; /* everything local to lexical context */ |
bd5635a1 RP |
136 | |
137 | /* List of unclosed lexical contexts | |
138 | (that will become blocks, eventually). */ | |
139 | ||
318bf84f | 140 | struct coff_context_stack |
bd5635a1 | 141 | { |
318bf84f FF |
142 | struct coff_context_stack *next; |
143 | struct coff_pending *locals; | |
bd5635a1 RP |
144 | struct pending_block *old_blocks; |
145 | struct symbol *name; | |
146 | CORE_ADDR start_addr; | |
147 | int depth; | |
148 | }; | |
149 | ||
318bf84f | 150 | struct coff_context_stack *coff_context_stack; |
bd5635a1 RP |
151 | |
152 | /* Nonzero if within a function (so symbols should be local, | |
153 | if nothing says specifically). */ | |
154 | ||
155 | int within_function; | |
156 | ||
d8ce1326 JG |
157 | #if 0 |
158 | /* The type of the function we are currently reading in. This is | |
159 | used by define_symbol to record the type of arguments to a function. */ | |
160 | ||
161 | struct type *in_function_type; | |
162 | #endif | |
163 | ||
bd5635a1 RP |
164 | struct pending_block *pending_blocks; |
165 | ||
bd5635a1 RP |
166 | /* Complaints about various problems in the file being read */ |
167 | ||
168 | struct complaint ef_complaint = | |
169 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
170 | ||
7e258d18 PB |
171 | struct complaint bf_no_aux_complaint = |
172 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
173 | ||
174 | struct complaint ef_no_aux_complaint = | |
175 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 176 | |
63989338 JG |
177 | struct complaint lineno_complaint = |
178 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
179 | ||
7e258d18 PB |
180 | struct complaint unexpected_type_complaint = |
181 | {"Unexpected type for symbol %s", 0, 0}; | |
182 | ||
183 | struct complaint bad_sclass_complaint = | |
184 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f | 185 | |
f70be3e4 JG |
186 | struct complaint misordered_blocks_complaint = |
187 | {"Blocks out of order at address %x", 0, 0}; | |
188 | ||
189 | struct complaint tagndx_bad_complaint = | |
190 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; | |
191 | ||
318bf84f FF |
192 | /* Simplified internal version of coff symbol table information */ |
193 | ||
194 | struct coff_symbol { | |
195 | char *c_name; | |
196 | int c_symnum; /* symbol number of this entry */ | |
197 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
198 | long c_value; | |
199 | int c_sclass; | |
200 | int c_secnum; | |
201 | unsigned int c_type; | |
202 | }; | |
203 | ||
204 | static struct type * | |
205 | coff_read_struct_type PARAMS ((int, int, int)); | |
206 | ||
207 | static struct type * | |
208 | decode_base_type PARAMS ((struct coff_symbol *, unsigned int, | |
209 | union internal_auxent *)); | |
210 | ||
211 | static struct type * | |
212 | decode_type PARAMS ((struct coff_symbol *, unsigned int, | |
213 | union internal_auxent *)); | |
214 | ||
215 | static struct type * | |
216 | decode_function_type PARAMS ((struct coff_symbol *, unsigned int, | |
217 | union internal_auxent *)); | |
218 | ||
219 | static struct type * | |
220 | coff_read_enum_type PARAMS ((int, int, int)); | |
221 | ||
222 | static struct blockvector * | |
223 | make_blockvector PARAMS ((struct objfile *)); | |
224 | ||
225 | static struct symbol * | |
226 | process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *, | |
227 | struct objfile *)); | |
228 | ||
f70be3e4 JG |
229 | static void |
230 | patch_opaque_types PARAMS ((struct symtab *)); | |
318bf84f FF |
231 | |
232 | static void | |
233 | patch_type PARAMS ((struct type *, struct type *)); | |
234 | ||
235 | static void | |
236 | enter_linenos PARAMS ((long, int, int)); | |
237 | ||
238 | static int | |
239 | init_lineno PARAMS ((int, long, int)); | |
240 | ||
241 | static char * | |
242 | getfilename PARAMS ((union internal_auxent *)); | |
243 | ||
244 | static char * | |
245 | getsymname PARAMS ((struct internal_syment *)); | |
246 | ||
247 | static void | |
248 | free_stringtab PARAMS ((void)); | |
249 | ||
250 | static int | |
251 | init_stringtab PARAMS ((int, long)); | |
252 | ||
253 | static void | |
254 | read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *, | |
255 | union internal_auxent *)); | |
256 | ||
257 | static void | |
f70be3e4 | 258 | read_coff_symtab PARAMS ((long, int, struct objfile *)); |
318bf84f FF |
259 | |
260 | static void | |
80d68b1d | 261 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); |
318bf84f FF |
262 | |
263 | static void | |
80d68b1d | 264 | coff_symfile_init PARAMS ((struct objfile *)); |
318bf84f FF |
265 | |
266 | static void | |
80d68b1d | 267 | coff_new_init PARAMS ((struct objfile *)); |
318bf84f FF |
268 | |
269 | static void | |
80d68b1d FF |
270 | coff_symfile_read PARAMS ((struct objfile *, CORE_ADDR, int)); |
271 | ||
272 | static void | |
273 | coff_symfile_finish PARAMS ((struct objfile *)); | |
318bf84f FF |
274 | |
275 | static void | |
f70be3e4 | 276 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type)); |
318bf84f FF |
277 | |
278 | static void | |
279 | coff_end_symtab PARAMS ((struct objfile *)); | |
280 | ||
281 | static void | |
282 | complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); | |
283 | ||
284 | static void | |
285 | coff_start_symtab PARAMS ((void)); | |
286 | ||
287 | static void | |
288 | coff_record_line PARAMS ((int, CORE_ADDR)); | |
289 | ||
290 | static void | |
291 | coff_finish_block PARAMS ((struct symbol *, struct coff_pending **, | |
292 | struct pending_block *, CORE_ADDR, CORE_ADDR, | |
293 | struct objfile *)); | |
294 | ||
295 | static void | |
296 | coff_add_symbol_to_list PARAMS ((struct symbol *, struct coff_pending **)); | |
297 | ||
298 | static struct type * | |
299 | coff_alloc_type PARAMS ((int)); | |
300 | ||
301 | static struct type ** | |
302 | coff_lookup_type PARAMS ((int)); | |
303 | ||
bd5635a1 RP |
304 | \f |
305 | /* Look up a coff type-number index. Return the address of the slot | |
306 | where the type for that index is stored. | |
307 | The type-number is in INDEX. | |
308 | ||
309 | This can be used for finding the type associated with that index | |
310 | or for associating a new type with the index. */ | |
311 | ||
312 | static struct type ** | |
313 | coff_lookup_type (index) | |
314 | register int index; | |
315 | { | |
316 | if (index >= type_vector_length) | |
317 | { | |
318 | int old_vector_length = type_vector_length; | |
319 | ||
320 | type_vector_length *= 2; | |
321 | if (type_vector_length < index) { | |
322 | type_vector_length = index * 2; | |
323 | } | |
159a075e | 324 | type_vector = (struct type **) |
318bf84f FF |
325 | xrealloc ((char *) type_vector, |
326 | type_vector_length * sizeof (struct type *)); | |
159a075e | 327 | bzero (&type_vector[old_vector_length], |
bd5635a1 RP |
328 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
329 | } | |
159a075e | 330 | return &type_vector[index]; |
bd5635a1 RP |
331 | } |
332 | ||
333 | /* Make sure there is a type allocated for type number index | |
334 | and return the type object. | |
335 | This can create an empty (zeroed) type object. */ | |
336 | ||
337 | static struct type * | |
338 | coff_alloc_type (index) | |
339 | int index; | |
340 | { | |
341 | register struct type **type_addr = coff_lookup_type (index); | |
342 | register struct type *type = *type_addr; | |
343 | ||
344 | /* If we are referring to a type not known at all yet, | |
345 | allocate an empty type for it. | |
346 | We will fill it in later if we find out how. */ | |
318bf84f | 347 | if (type == NULL) |
bd5635a1 | 348 | { |
318bf84f | 349 | type = alloc_type (current_objfile); |
bd5635a1 RP |
350 | *type_addr = type; |
351 | } | |
352 | return type; | |
353 | } | |
354 | \f | |
355 | /* maintain the lists of symbols and blocks */ | |
356 | ||
357 | /* Add a symbol to one of the lists of symbols. */ | |
358 | static void | |
318bf84f | 359 | coff_add_symbol_to_list (symbol, listhead) |
bd5635a1 | 360 | struct symbol *symbol; |
318bf84f | 361 | struct coff_pending **listhead; |
bd5635a1 | 362 | { |
318bf84f FF |
363 | register struct coff_pending *link |
364 | = (struct coff_pending *) xmalloc (sizeof (struct coff_pending)); | |
bd5635a1 RP |
365 | |
366 | link->next = *listhead; | |
367 | link->symbol = symbol; | |
368 | *listhead = link; | |
369 | } | |
370 | ||
371 | /* Take one of the lists of symbols and make a block from it. | |
372 | Put the block on the list of pending blocks. */ | |
373 | ||
374 | static void | |
318bf84f | 375 | coff_finish_block (symbol, listhead, old_blocks, start, end, objfile) |
bd5635a1 | 376 | struct symbol *symbol; |
318bf84f | 377 | struct coff_pending **listhead; |
bd5635a1 RP |
378 | struct pending_block *old_blocks; |
379 | CORE_ADDR start, end; | |
318bf84f | 380 | struct objfile *objfile; |
bd5635a1 | 381 | { |
318bf84f | 382 | register struct coff_pending *next, *next1; |
bd5635a1 RP |
383 | register struct block *block; |
384 | register struct pending_block *pblock; | |
385 | struct pending_block *opblock; | |
386 | register int i; | |
387 | ||
388 | /* Count the length of the list of symbols. */ | |
389 | ||
390 | for (next = *listhead, i = 0; next; next = next->next, i++); | |
391 | ||
392 | block = (struct block *) | |
318bf84f | 393 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct block) + (i - 1) * sizeof (struct symbol *)); |
bd5635a1 RP |
394 | |
395 | /* Copy the symbols into the block. */ | |
396 | ||
397 | BLOCK_NSYMS (block) = i; | |
398 | for (next = *listhead; next; next = next->next) | |
399 | BLOCK_SYM (block, --i) = next->symbol; | |
400 | ||
401 | BLOCK_START (block) = start; | |
402 | BLOCK_END (block) = end; | |
403 | BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */ | |
404 | ||
405 | /* Put the block in as the value of the symbol that names it. */ | |
406 | ||
407 | if (symbol) | |
408 | { | |
409 | SYMBOL_BLOCK_VALUE (symbol) = block; | |
410 | BLOCK_FUNCTION (block) = symbol; | |
411 | } | |
412 | else | |
413 | BLOCK_FUNCTION (block) = 0; | |
414 | ||
415 | /* Now free the links of the list, and empty the list. */ | |
416 | ||
417 | for (next = *listhead; next; next = next1) | |
418 | { | |
419 | next1 = next->next; | |
f70be3e4 | 420 | free ((PTR)next); |
bd5635a1 RP |
421 | } |
422 | *listhead = 0; | |
423 | ||
424 | /* Install this block as the superblock | |
425 | of all blocks made since the start of this scope | |
426 | that don't have superblocks yet. */ | |
427 | ||
428 | opblock = 0; | |
429 | for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next) | |
430 | { | |
431 | if (BLOCK_SUPERBLOCK (pblock->block) == 0) | |
432 | BLOCK_SUPERBLOCK (pblock->block) = block; | |
433 | opblock = pblock; | |
434 | } | |
435 | ||
436 | /* Record this block on the list of all blocks in the file. | |
437 | Put it after opblock, or at the beginning if opblock is 0. | |
438 | This puts the block in the list after all its subblocks. */ | |
439 | ||
440 | pblock = (struct pending_block *) xmalloc (sizeof (struct pending_block)); | |
441 | pblock->block = block; | |
442 | if (opblock) | |
443 | { | |
444 | pblock->next = opblock->next; | |
445 | opblock->next = pblock; | |
446 | } | |
447 | else | |
448 | { | |
449 | pblock->next = pending_blocks; | |
450 | pending_blocks = pblock; | |
451 | } | |
452 | } | |
453 | ||
454 | static struct blockvector * | |
318bf84f FF |
455 | make_blockvector (objfile) |
456 | struct objfile *objfile; | |
bd5635a1 RP |
457 | { |
458 | register struct pending_block *next, *next1; | |
459 | register struct blockvector *blockvector; | |
460 | register int i; | |
461 | ||
462 | /* Count the length of the list of blocks. */ | |
463 | ||
464 | for (next = pending_blocks, i = 0; next; next = next->next, i++); | |
465 | ||
466 | blockvector = (struct blockvector *) | |
318bf84f | 467 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *)); |
bd5635a1 RP |
468 | |
469 | /* Copy the blocks into the blockvector. | |
470 | This is done in reverse order, which happens to put | |
471 | the blocks into the proper order (ascending starting address). | |
318bf84f | 472 | coff_finish_block has hair to insert each block into the list |
bd5635a1 RP |
473 | after its subblocks in order to make sure this is true. */ |
474 | ||
475 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
476 | for (next = pending_blocks; next; next = next->next) | |
477 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
478 | ||
479 | /* Now free the links of the list, and empty the list. */ | |
480 | ||
481 | for (next = pending_blocks; next; next = next1) | |
482 | { | |
483 | next1 = next->next; | |
f70be3e4 | 484 | free ((PTR)next); |
bd5635a1 RP |
485 | } |
486 | pending_blocks = 0; | |
487 | ||
488 | return blockvector; | |
489 | } | |
490 | ||
491 | /* Manage the vector of line numbers. */ | |
492 | ||
e1ce8aa5 | 493 | static void |
318bf84f | 494 | coff_record_line (line, pc) |
bd5635a1 RP |
495 | int line; |
496 | CORE_ADDR pc; | |
497 | { | |
498 | struct linetable_entry *e; | |
499 | /* Make sure line vector is big enough. */ | |
500 | ||
501 | if (line_vector_index + 2 >= line_vector_length) | |
502 | { | |
503 | line_vector_length *= 2; | |
504 | line_vector = (struct linetable *) | |
318bf84f | 505 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
506 | + (line_vector_length |
507 | * sizeof (struct linetable_entry))); | |
508 | } | |
509 | ||
510 | e = line_vector->item + line_vector_index++; | |
511 | e->line = line; e->pc = pc; | |
512 | } | |
513 | \f | |
514 | /* Start a new symtab for a new source file. | |
515 | This is called when a COFF ".file" symbol is seen; | |
516 | it indicates the start of data for one original source file. */ | |
517 | ||
518 | static void | |
318bf84f | 519 | coff_start_symtab () |
bd5635a1 | 520 | { |
318bf84f FF |
521 | coff_file_symbols = 0; |
522 | coff_global_symbols = 0; | |
523 | coff_context_stack = 0; | |
bd5635a1 RP |
524 | within_function = 0; |
525 | last_source_file = 0; | |
bd5635a1 | 526 | |
cadbb07a | 527 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 528 | |
cadbb07a | 529 | if (line_vector) /* Unlikely, but maybe possible? */ |
f70be3e4 | 530 | free ((PTR)line_vector); |
bd5635a1 RP |
531 | line_vector_index = 0; |
532 | line_vector_length = 1000; | |
533 | prev_line_number = -2; /* Force first line number to be explicit */ | |
534 | line_vector = (struct linetable *) | |
535 | xmalloc (sizeof (struct linetable) | |
536 | + line_vector_length * sizeof (struct linetable_entry)); | |
537 | } | |
538 | ||
539 | /* Save the vital information from when starting to read a file, | |
540 | for use when closing off the current file. | |
541 | NAME is the file name the symbols came from, START_ADDR is the first | |
542 | text address for the file, and SIZE is the number of bytes of text. */ | |
543 | ||
544 | static void | |
545 | complete_symtab (name, start_addr, size) | |
546 | char *name; | |
547 | CORE_ADDR start_addr; | |
548 | unsigned int size; | |
549 | { | |
550 | last_source_file = savestring (name, strlen (name)); | |
551 | cur_src_start_addr = start_addr; | |
552 | cur_src_end_addr = start_addr + size; | |
553 | ||
3624c875 FF |
554 | if (current_objfile -> ei.entry_point >= cur_src_start_addr && |
555 | current_objfile -> ei.entry_point < cur_src_end_addr) | |
bd5635a1 | 556 | { |
3624c875 FF |
557 | current_objfile -> ei.entry_file_lowpc = cur_src_start_addr; |
558 | current_objfile -> ei.entry_file_highpc = cur_src_end_addr; | |
bd5635a1 RP |
559 | } |
560 | } | |
561 | ||
562 | /* Finish the symbol definitions for one main source file, | |
563 | close off all the lexical contexts for that file | |
564 | (creating struct block's for them), then make the | |
565 | struct symtab for that file and put it in the list of all such. */ | |
566 | ||
567 | static void | |
318bf84f | 568 | coff_end_symtab (objfile) |
a048c8f5 | 569 | struct objfile *objfile; |
bd5635a1 RP |
570 | { |
571 | register struct symtab *symtab; | |
318bf84f | 572 | register struct coff_context_stack *cstk; |
bd5635a1 RP |
573 | register struct blockvector *blockvector; |
574 | register struct linetable *lv; | |
575 | ||
576 | /* Finish the lexical context of the last function in the file. */ | |
577 | ||
318bf84f | 578 | if (coff_context_stack) |
bd5635a1 | 579 | { |
318bf84f FF |
580 | cstk = coff_context_stack; |
581 | coff_context_stack = 0; | |
bd5635a1 | 582 | /* Make a block for the local symbols within. */ |
318bf84f FF |
583 | coff_finish_block (cstk->name, &coff_local_symbols, cstk->old_blocks, |
584 | cstk->start_addr, cur_src_end_addr, objfile); | |
f70be3e4 | 585 | free ((PTR)cstk); |
bd5635a1 RP |
586 | } |
587 | ||
588 | /* Ignore a file that has no functions with real debugging info. */ | |
318bf84f | 589 | if (pending_blocks == 0 && coff_file_symbols == 0 && coff_global_symbols == 0) |
bd5635a1 | 590 | { |
f70be3e4 | 591 | free ((PTR)line_vector); |
bd5635a1 RP |
592 | line_vector = 0; |
593 | line_vector_length = -1; | |
594 | last_source_file = 0; | |
595 | return; | |
596 | } | |
597 | ||
f70be3e4 JG |
598 | /* It is unfortunate that in amdcoff, pending blocks might not be ordered |
599 | in this stage. Especially, blocks for static functions will show up at | |
600 | the end. We need to sort them, so tools like `find_pc_function' and | |
601 | `find_pc_block' can work reliably. */ | |
602 | if (pending_blocks) { | |
603 | /* FIXME! Remove this horrid bubble sort and use qsort!!! */ | |
604 | int swapped; | |
605 | do { | |
606 | struct pending_block *pb, *pbnext; | |
607 | ||
608 | pb = pending_blocks, pbnext = pb->next; | |
609 | swapped = 0; | |
610 | ||
611 | while ( pbnext ) { | |
612 | ||
613 | /* swap blocks if unordered! */ | |
614 | ||
615 | if (BLOCK_START(pb->block) < BLOCK_START(pbnext->block)) { | |
616 | struct block *tmp = pb->block; | |
e676a15f FF |
617 | complain (&misordered_blocks_complaint, |
618 | (char *) BLOCK_START (pb->block)); | |
f70be3e4 JG |
619 | pb->block = pbnext->block; |
620 | pbnext->block = tmp; | |
621 | swapped = 1; | |
622 | } | |
623 | pb = pbnext; | |
624 | pbnext = pbnext->next; | |
625 | } | |
626 | } while (swapped); | |
627 | } | |
628 | ||
a6e2b424 JG |
629 | /* Create the two top-level blocks for this file (STATIC_BLOCK and |
630 | GLOBAL_BLOCK). */ | |
318bf84f FF |
631 | coff_finish_block (0, &coff_file_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile); |
632 | coff_finish_block (0, &coff_global_symbols, 0, cur_src_start_addr, cur_src_end_addr, objfile); | |
bd5635a1 RP |
633 | |
634 | /* Create the blockvector that points to all the file's blocks. */ | |
318bf84f | 635 | blockvector = make_blockvector (objfile); |
bd5635a1 RP |
636 | |
637 | /* Now create the symtab object for this source file. */ | |
a048c8f5 | 638 | symtab = allocate_symtab (last_source_file, objfile); |
bd5635a1 RP |
639 | |
640 | /* Fill in its components. */ | |
641 | symtab->blockvector = blockvector; | |
642 | symtab->free_code = free_linetable; | |
d8ce1326 | 643 | symtab->free_ptr = 0; |
bd5635a1 | 644 | symtab->filename = last_source_file; |
b203fc18 | 645 | symtab->dirname = NULL; |
bd5635a1 RP |
646 | lv = line_vector; |
647 | lv->nitems = line_vector_index; | |
648 | symtab->linetable = (struct linetable *) | |
318bf84f | 649 | xrealloc ((char *) lv, (sizeof (struct linetable) |
bd5635a1 | 650 | + lv->nitems * sizeof (struct linetable_entry))); |
b203fc18 | 651 | |
a6e2b424 JG |
652 | free_named_symtabs (symtab->filename); |
653 | ||
bd5635a1 RP |
654 | /* Reinitialize for beginning of new file. */ |
655 | line_vector = 0; | |
656 | line_vector_length = -1; | |
657 | last_source_file = 0; | |
658 | } | |
659 | \f | |
660 | static void | |
f70be3e4 | 661 | record_minimal_symbol (name, address, type) |
bd5635a1 RP |
662 | char *name; |
663 | CORE_ADDR address; | |
f70be3e4 | 664 | enum minimal_symbol_type type; |
bd5635a1 | 665 | { |
318bf84f | 666 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 667 | if (name[0] == '@') return; |
e140f1da | 668 | |
318bf84f FF |
669 | /* mst_text isn't true, but apparently COFF doesn't tell us what it really |
670 | is, so this guess is more useful than mst_unknown. */ | |
671 | prim_record_minimal_symbol (savestring (name, strlen (name)), | |
bd5635a1 | 672 | address, |
f70be3e4 | 673 | type); |
bd5635a1 RP |
674 | } |
675 | \f | |
676 | /* coff_symfile_init () | |
677 | is the coff-specific initialization routine for reading symbols. | |
3624c875 | 678 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
679 | the BFD for the file whose symbols are being read, and a slot for |
680 | a pointer to "private data" which we fill with cookies and other | |
681 | treats for coff_symfile_read (). | |
682 | ||
683 | We will only be called if this is a COFF or COFF-like file. | |
684 | BFD handles figuring out the format of the file, and code in symtab.c | |
685 | uses BFD's determination to vector to us. | |
686 | ||
687 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
688 | ||
689 | struct coff_symfile_info { | |
690 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
691 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
692 | }; | |
693 | ||
d8ce1326 JG |
694 | static int text_bfd_scnum; |
695 | ||
9bba3334 | 696 | static void |
80d68b1d FF |
697 | coff_symfile_init (objfile) |
698 | struct objfile *objfile; | |
bd5635a1 | 699 | { |
d8ce1326 | 700 | asection *section; |
80d68b1d | 701 | bfd *abfd = objfile->obfd; |
bd5635a1 RP |
702 | |
703 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
704 | objfile -> sym_private = xmmalloc (objfile -> md, |
705 | sizeof (struct coff_symfile_info)); | |
bd5635a1 | 706 | |
3624c875 FF |
707 | init_entry_point_info (objfile); |
708 | ||
709 | /* Save the section number for the text section */ | |
f70be3e4 JG |
710 | section = bfd_get_section_by_name(abfd,".text"); |
711 | if (section) | |
3624c875 | 712 | text_bfd_scnum = section->index; |
bd5635a1 | 713 | else |
3624c875 | 714 | text_bfd_scnum = -1; |
bd5635a1 RP |
715 | } |
716 | ||
717 | /* This function is called for every section; it finds the outer limits | |
718 | of the line table (minimum and maximum file offset) so that the | |
719 | mainline code can read the whole thing for efficiency. */ | |
720 | ||
e1ce8aa5 | 721 | /* ARGSUSED */ |
bd5635a1 RP |
722 | static void |
723 | find_linenos (abfd, asect, vpinfo) | |
724 | bfd *abfd; | |
725 | sec_ptr asect; | |
318bf84f | 726 | PTR vpinfo; |
bd5635a1 RP |
727 | { |
728 | struct coff_symfile_info *info; | |
729 | int size, count; | |
730 | file_ptr offset, maxoff; | |
731 | ||
732 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
733 | count = asect->lineno_count; | |
734 | /* End of warning */ | |
735 | ||
736 | if (count == 0) | |
737 | return; | |
d8ce1326 | 738 | size = count * local_linesz; |
bd5635a1 RP |
739 | |
740 | info = (struct coff_symfile_info *)vpinfo; | |
741 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
742 | offset = asect->line_filepos; | |
743 | /* End of warning */ | |
744 | ||
745 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
746 | info->min_lineno_offset = offset; | |
747 | ||
748 | maxoff = offset + size; | |
749 | if (maxoff > info->max_lineno_offset) | |
750 | info->max_lineno_offset = maxoff; | |
751 | } | |
752 | ||
753 | ||
e1ce8aa5 JK |
754 | /* The BFD for this file -- only good while we're actively reading |
755 | symbols into a psymtab or a symtab. */ | |
756 | ||
757 | static bfd *symfile_bfd; | |
758 | ||
bd5635a1 RP |
759 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
760 | /* FIXME! Addr and Mainline are not used yet -- this will not work for | |
761 | shared libraries or add_file! */ | |
762 | ||
61a7292f | 763 | /* ARGSUSED */ |
9bba3334 | 764 | static void |
80d68b1d FF |
765 | coff_symfile_read (objfile, addr, mainline) |
766 | struct objfile *objfile; | |
bd5635a1 RP |
767 | CORE_ADDR addr; |
768 | int mainline; | |
769 | { | |
80d68b1d FF |
770 | struct coff_symfile_info *info; |
771 | bfd *abfd = objfile->obfd; | |
d8ce1326 | 772 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 RP |
773 | char *name = bfd_get_filename (abfd); |
774 | int desc; | |
775 | register int val; | |
776 | int num_symbols; | |
777 | int symtab_offset; | |
778 | int stringtab_offset; | |
f70be3e4 | 779 | struct symtab *s; |
bd5635a1 | 780 | |
80d68b1d | 781 | info = (struct coff_symfile_info *) objfile -> sym_private; |
bd5635a1 RP |
782 | symfile_bfd = abfd; /* Kludge for swap routines */ |
783 | ||
784 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
d8ce1326 | 785 | desc = fileno ((FILE *)(abfd->iostream)); /* File descriptor */ |
bd5635a1 | 786 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
787 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
788 | stringtab_offset = symtab_offset + /* String table file offset */ | |
789 | num_symbols * cdata->local_symesz; | |
790 | ||
791 | /* Set a few file-statics that give us specific information about | |
792 | the particular COFF file format we're reading. */ | |
793 | local_linesz = cdata->local_linesz; | |
794 | local_n_btmask = cdata->local_n_btmask; | |
795 | local_n_btshft = cdata->local_n_btshft; | |
796 | local_n_tmask = cdata->local_n_tmask; | |
797 | local_n_tshift = cdata->local_n_tshift; | |
798 | local_linesz = cdata->local_linesz; | |
799 | local_symesz = cdata->local_symesz; | |
800 | local_auxesz = cdata->local_auxesz; | |
801 | ||
802 | /* Allocate space for raw symbol and aux entries, based on their | |
803 | space requirements as reported by BFD. */ | |
804 | temp_sym = (char *) xmalloc | |
805 | (cdata->local_symesz + cdata->local_auxesz); | |
806 | temp_aux = temp_sym + cdata->local_symesz; | |
807 | make_cleanup (free_current_contents, &temp_sym); | |
bd5635a1 RP |
808 | /* End of warning */ |
809 | ||
bd5635a1 RP |
810 | /* Read the line number table, all at once. */ |
811 | info->min_lineno_offset = 0; | |
812 | info->max_lineno_offset = 0; | |
f70be3e4 | 813 | bfd_map_over_sections (abfd, find_linenos, (PTR)info); |
bd5635a1 RP |
814 | |
815 | val = init_lineno (desc, info->min_lineno_offset, | |
816 | info->max_lineno_offset - info->min_lineno_offset); | |
817 | if (val < 0) | |
818 | error ("\"%s\": error reading line numbers\n", name); | |
819 | ||
820 | /* Now read the string table, all at once. */ | |
821 | ||
822 | val = init_stringtab (desc, stringtab_offset); | |
823 | if (val < 0) | |
a048c8f5 | 824 | error ("\"%s\": can't get string table", name); |
bd5635a1 RP |
825 | make_cleanup (free_stringtab, 0); |
826 | ||
318bf84f FF |
827 | init_minimal_symbol_collection (); |
828 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
829 | |
830 | /* Now that the executable file is positioned at symbol table, | |
831 | process it and define symbols accordingly. */ | |
832 | ||
f70be3e4 | 833 | read_coff_symtab ((long)symtab_offset, num_symbols, objfile); |
bd5635a1 RP |
834 | |
835 | /* Sort symbols alphabetically within each block. */ | |
836 | ||
837 | sort_all_symtab_syms (); | |
838 | ||
318bf84f FF |
839 | /* Install any minimal symbols that have been collected as the current |
840 | minimal symbols for this objfile. */ | |
bd5635a1 | 841 | |
80d68b1d | 842 | install_minimal_symbols (objfile); |
bd5635a1 RP |
843 | } |
844 | ||
9bba3334 | 845 | static void |
f70be3e4 JG |
846 | coff_new_init (ignore) |
847 | struct objfile *ignore; | |
bd5635a1 | 848 | { |
a048c8f5 | 849 | /* Nothin' to do */ |
bd5635a1 | 850 | } |
80d68b1d FF |
851 | |
852 | /* Perform any local cleanups required when we are done with a particular | |
853 | objfile. I.E, we are in the process of discarding all symbol information | |
854 | for an objfile, freeing up all memory held for it, and unlinking the | |
855 | objfile struct from the global list of known objfiles. */ | |
856 | ||
857 | static void | |
858 | coff_symfile_finish (objfile) | |
859 | struct objfile *objfile; | |
860 | { | |
861 | if (objfile -> sym_private != NULL) | |
862 | { | |
863 | mfree (objfile -> md, objfile -> sym_private); | |
864 | } | |
865 | } | |
866 | ||
bd5635a1 | 867 | \f |
bd5635a1 RP |
868 | /* Given pointers to a symbol table in coff style exec file, |
869 | analyze them and create struct symtab's describing the symbols. | |
870 | NSYMS is the number of symbols in the symbol table. | |
871 | We read them one at a time using read_one_sym (). */ | |
872 | ||
873 | static void | |
f70be3e4 JG |
874 | read_coff_symtab (symtab_offset, nsyms, objfile) |
875 | long symtab_offset; | |
bd5635a1 | 876 | int nsyms; |
a048c8f5 | 877 | struct objfile *objfile; |
bd5635a1 | 878 | { |
bd5635a1 | 879 | FILE *stream; |
318bf84f | 880 | register struct coff_context_stack *new; |
bd5635a1 RP |
881 | struct coff_symbol coff_symbol; |
882 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
883 | static struct internal_syment main_sym; |
884 | static union internal_auxent main_aux; | |
bd5635a1 | 885 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
886 | static struct internal_syment fcn_sym_saved; |
887 | static union internal_auxent fcn_aux_saved; | |
f70be3e4 JG |
888 | struct symtab *s; |
889 | ||
bd5635a1 RP |
890 | /* A .file is open. */ |
891 | int in_source_file = 0; | |
892 | int num_object_files = 0; | |
893 | int next_file_symnum = -1; | |
894 | ||
895 | /* Name of the current file. */ | |
896 | char *filestring = ""; | |
f70be3e4 JG |
897 | int depth = 0; |
898 | int fcn_first_line = 0; | |
899 | int fcn_last_line = 0; | |
900 | int fcn_start_addr = 0; | |
901 | long fcn_line_ptr = 0; | |
bd5635a1 | 902 | struct cleanup *old_chain; |
f70be3e4 | 903 | int val; |
bd5635a1 | 904 | |
f70be3e4 JG |
905 | stream = fopen (objfile->name, FOPEN_RB); |
906 | if (!stream) | |
907 | perror_with_name(objfile->name); | |
bd5635a1 | 908 | |
f70be3e4 JG |
909 | /* Position to read the symbol table. */ |
910 | val = fseek (stream, (long)symtab_offset, 0); | |
911 | if (val < 0) | |
912 | perror_with_name (objfile->name); | |
bd5635a1 | 913 | |
a048c8f5 JG |
914 | /* These cleanups will be discarded below if we succeed. */ |
915 | old_chain = make_cleanup (free_objfile, objfile); | |
bd5635a1 | 916 | make_cleanup (fclose, stream); |
a048c8f5 | 917 | |
318bf84f | 918 | current_objfile = objfile; |
bd5635a1 RP |
919 | nlist_stream_global = stream; |
920 | nlist_nsyms_global = nsyms; | |
921 | last_source_file = 0; | |
922 | bzero (opaque_type_chain, sizeof opaque_type_chain); | |
923 | ||
cadbb07a | 924 | if (type_vector) /* Get rid of previous one */ |
f70be3e4 | 925 | free ((PTR)type_vector); |
bd5635a1 | 926 | type_vector_length = 160; |
159a075e SG |
927 | type_vector = (struct type **) |
928 | xmalloc (type_vector_length * sizeof (struct type *)); | |
929 | bzero (type_vector, type_vector_length * sizeof (struct type *)); | |
bd5635a1 | 930 | |
318bf84f | 931 | coff_start_symtab (); |
bd5635a1 RP |
932 | |
933 | symnum = 0; | |
934 | while (symnum < nsyms) | |
935 | { | |
936 | QUIT; /* Make this command interruptable. */ | |
937 | read_one_sym (cs, &main_sym, &main_aux); | |
938 | ||
939 | #ifdef SEM | |
940 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
941 | cs->c_name[2] << 8 | cs->c_name[3]; | |
942 | if (int_sem_val == temp_sem_val) | |
943 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
944 | #endif | |
945 | ||
946 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
947 | { | |
948 | if (last_source_file) | |
318bf84f | 949 | coff_end_symtab (objfile); |
bd5635a1 | 950 | |
318bf84f | 951 | coff_start_symtab (); |
bd5635a1 RP |
952 | complete_symtab ("_globals_", 0, first_object_file_end); |
953 | /* done with all files, everything from here on out is globals */ | |
954 | } | |
955 | ||
956 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
957 | if (!last_source_file && SDB_TYPE (cs->c_type) |
958 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
959 | complete_symtab (filestring, 0, 0); |
960 | ||
961 | /* Typedefs should not be treated as symbol definitions. */ | |
962 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
963 | { | |
318bf84f | 964 | /* record as a minimal symbol. if we get '.bf' next, |
bd5635a1 RP |
965 | * then we undo this step |
966 | */ | |
f70be3e4 | 967 | record_minimal_symbol (cs->c_name, cs->c_value, mst_text); |
bd5635a1 RP |
968 | |
969 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
970 | fcn_start_addr = cs->c_value; | |
971 | fcn_cs_saved = *cs; | |
972 | fcn_sym_saved = main_sym; | |
973 | fcn_aux_saved = main_aux; | |
974 | continue; | |
975 | } | |
976 | ||
977 | switch (cs->c_sclass) | |
978 | { | |
979 | case C_EFCN: | |
980 | case C_EXTDEF: | |
981 | case C_ULABEL: | |
982 | case C_USTATIC: | |
983 | case C_LINE: | |
984 | case C_ALIAS: | |
985 | case C_HIDDEN: | |
7e258d18 | 986 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
987 | break; |
988 | ||
989 | case C_FILE: | |
990 | /* | |
991 | * c_value field contains symnum of next .file entry in table | |
992 | * or symnum of first global after last .file. | |
993 | */ | |
994 | next_file_symnum = cs->c_value; | |
995 | filestring = getfilename (&main_aux); | |
996 | /* | |
997 | * Complete symbol table for last object file | |
998 | * containing debugging information. | |
999 | */ | |
1000 | if (last_source_file) | |
1001 | { | |
318bf84f FF |
1002 | coff_end_symtab (objfile); |
1003 | coff_start_symtab (); | |
bd5635a1 RP |
1004 | } |
1005 | in_source_file = 1; | |
1006 | break; | |
1007 | ||
1008 | case C_STAT: | |
1009 | if (cs->c_name[0] == '.') { | |
d8ce1326 JG |
1010 | if (strcmp (cs->c_name, ".text") == 0) { |
1011 | /* FIXME: don't wire in ".text" as section name | |
1012 | or symbol name! */ | |
bd5635a1 RP |
1013 | if (++num_object_files == 1) { |
1014 | /* last address of startup file */ | |
1015 | first_object_file_end = cs->c_value + | |
1016 | main_aux.x_scn.x_scnlen; | |
1017 | } | |
1018 | /* Check for in_source_file deals with case of | |
1019 | a file with debugging symbols | |
1020 | followed by a later file with no symbols. */ | |
1021 | if (in_source_file) | |
1022 | complete_symtab (filestring, cs->c_value, | |
1023 | main_aux.x_scn.x_scnlen); | |
1024 | in_source_file = 0; | |
1025 | } | |
1026 | /* flush rest of '.' symbols */ | |
1027 | break; | |
1028 | } | |
8714ff35 | 1029 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
1030 | && cs->c_name[0] == 'L' |
1031 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 1032 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
1033 | || strncmp (cs->c_name,"LC%",3) == 0 |
1034 | || strncmp (cs->c_name,"LP%",3) == 0 | |
1035 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
1036 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
1037 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
1038 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
1039 | /* At least on a 3b1, gcc generates swbeg and string labels | |
1040 | that look like this. Ignore them. */ | |
1041 | break; | |
1042 | /* fall in for static symbols that don't start with '.' */ | |
1043 | case C_EXT: | |
8714ff35 | 1044 | if (!SDB_TYPE (cs->c_type)) { |
d8ce1326 JG |
1045 | /* FIXME: This is BOGUS Will Robinson! |
1046 | Coff should provide the SEC_CODE flag for executable sections, | |
1047 | then if we could look up sections by section number we | |
1048 | could see if the flags indicate SEC_CODE. If so, then | |
318bf84f FF |
1049 | record this symbol as a function in the minimal symbol table. |
1050 | But why are absolute syms recorded as functions, anyway? */ | |
d8ce1326 | 1051 | if (cs->c_secnum <= text_bfd_scnum+1) {/* text or abs */ |
f70be3e4 JG |
1052 | record_minimal_symbol (cs->c_name, cs->c_value, |
1053 | mst_text); | |
bd5635a1 RP |
1054 | break; |
1055 | } else { | |
f70be3e4 JG |
1056 | record_minimal_symbol (cs->c_name, cs->c_value, |
1057 | mst_data); | |
1058 | break; | |
bd5635a1 RP |
1059 | } |
1060 | } | |
318bf84f | 1061 | (void) process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1062 | break; |
1063 | ||
1064 | case C_FCN: | |
1065 | if (strcmp (cs->c_name, ".bf") == 0) | |
1066 | { | |
1067 | within_function = 1; | |
1068 | ||
1069 | /* value contains address of first non-init type code */ | |
1070 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1071 | contains line number of '{' } */ | |
e64fbb3a | 1072 | if (cs->c_naux != 1) |
318bf84f | 1073 | complain (&bf_no_aux_complaint, (char *) cs->c_symnum); |
bd5635a1 RP |
1074 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1075 | ||
318bf84f FF |
1076 | new = (struct coff_context_stack *) |
1077 | xmalloc (sizeof (struct coff_context_stack)); | |
bd5635a1 RP |
1078 | new->depth = depth = 0; |
1079 | new->next = 0; | |
318bf84f | 1080 | coff_context_stack = new; |
bd5635a1 RP |
1081 | new->locals = 0; |
1082 | new->old_blocks = pending_blocks; | |
1083 | new->start_addr = fcn_start_addr; | |
1084 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
1085 | new->name = process_coff_symbol (&fcn_cs_saved, | |
318bf84f | 1086 | &fcn_aux_saved, objfile); |
bd5635a1 RP |
1087 | } |
1088 | else if (strcmp (cs->c_name, ".ef") == 0) | |
1089 | { | |
1090 | /* the value of .ef is the address of epilogue code; | |
1091 | * not useful for gdb | |
1092 | */ | |
1093 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1094 | contains number of lines to '}' */ | |
318bf84f | 1095 | new = coff_context_stack; |
bd5635a1 RP |
1096 | if (new == 0) |
1097 | { | |
318bf84f | 1098 | complain (&ef_complaint, (char *) cs->c_symnum); |
bd5635a1 RP |
1099 | within_function = 0; |
1100 | break; | |
1101 | } | |
e64fbb3a | 1102 | if (cs->c_naux != 1) { |
318bf84f | 1103 | complain (&ef_no_aux_complaint, (char *) cs->c_symnum); |
e64fbb3a JG |
1104 | fcn_last_line = 0x7FFFFFFF; |
1105 | } else { | |
1106 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1107 | } | |
bd5635a1 RP |
1108 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line); |
1109 | ||
318bf84f | 1110 | coff_finish_block (new->name, &coff_local_symbols, new->old_blocks, |
bd5635a1 RP |
1111 | new->start_addr, |
1112 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
1113 | /* This macro should be defined only on | |
1114 | machines where the | |
1115 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1116 | field is always zero. | |
1117 | So use the .bf record information that | |
1118 | points to the epilogue and add the size | |
1119 | of the epilogue. */ | |
318bf84f | 1120 | cs->c_value + FUNCTION_EPILOGUE_SIZE, |
bd5635a1 RP |
1121 | #else |
1122 | fcn_cs_saved.c_value + | |
318bf84f | 1123 | fcn_aux_saved.x_sym.x_misc.x_fsize, |
bd5635a1 | 1124 | #endif |
318bf84f | 1125 | objfile |
bd5635a1 | 1126 | ); |
318bf84f | 1127 | coff_context_stack = 0; |
bd5635a1 | 1128 | within_function = 0; |
f70be3e4 | 1129 | free ((PTR)new); |
bd5635a1 RP |
1130 | } |
1131 | break; | |
1132 | ||
1133 | case C_BLOCK: | |
1134 | if (strcmp (cs->c_name, ".bb") == 0) | |
1135 | { | |
318bf84f FF |
1136 | new = (struct coff_context_stack *) |
1137 | xmalloc (sizeof (struct coff_context_stack)); | |
bd5635a1 RP |
1138 | depth++; |
1139 | new->depth = depth; | |
318bf84f FF |
1140 | new->next = coff_context_stack; |
1141 | coff_context_stack = new; | |
1142 | new->locals = coff_local_symbols; | |
bd5635a1 RP |
1143 | new->old_blocks = pending_blocks; |
1144 | new->start_addr = cs->c_value; | |
1145 | new->name = 0; | |
318bf84f | 1146 | coff_local_symbols = 0; |
bd5635a1 RP |
1147 | } |
1148 | else if (strcmp (cs->c_name, ".eb") == 0) | |
1149 | { | |
318bf84f | 1150 | new = coff_context_stack; |
bd5635a1 RP |
1151 | if (new == 0 || depth != new->depth) |
1152 | error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.", | |
1153 | symnum); | |
318bf84f | 1154 | if (coff_local_symbols && coff_context_stack->next) |
bd5635a1 RP |
1155 | { |
1156 | /* Make a block for the local symbols within. */ | |
318bf84f FF |
1157 | coff_finish_block (0, &coff_local_symbols, new->old_blocks, |
1158 | new->start_addr, cs->c_value, objfile); | |
bd5635a1 RP |
1159 | } |
1160 | depth--; | |
318bf84f FF |
1161 | coff_local_symbols = new->locals; |
1162 | coff_context_stack = new->next; | |
f70be3e4 | 1163 | free ((PTR)new); |
bd5635a1 RP |
1164 | } |
1165 | break; | |
bd5635a1 RP |
1166 | |
1167 | default: | |
318bf84f | 1168 | (void) process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1169 | break; |
1170 | } | |
1171 | } | |
1172 | ||
1173 | if (last_source_file) | |
318bf84f | 1174 | coff_end_symtab (objfile); |
bd5635a1 | 1175 | fclose (stream); |
f70be3e4 JG |
1176 | |
1177 | /* Patch up any opaque types (references to types that are not defined | |
1178 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1179 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1180 | patch_opaque_types (s); | |
1181 | ||
bd5635a1 | 1182 | discard_cleanups (old_chain); |
318bf84f | 1183 | current_objfile = NULL; |
bd5635a1 RP |
1184 | } |
1185 | \f | |
1186 | /* Routines for reading headers and symbols from executable. */ | |
1187 | ||
1188 | #ifdef FIXME | |
1189 | /* Move these XXXMAGIC symbol defns into BFD! */ | |
1190 | ||
1191 | /* Read COFF file header, check magic number, | |
1192 | and return number of symbols. */ | |
1193 | read_file_hdr (chan, file_hdr) | |
1194 | int chan; | |
1195 | FILHDR *file_hdr; | |
1196 | { | |
1197 | lseek (chan, 0L, 0); | |
1198 | if (myread (chan, (char *)file_hdr, FILHSZ) < 0) | |
1199 | return -1; | |
1200 | ||
1201 | switch (file_hdr->f_magic) | |
1202 | { | |
1203 | #ifdef MC68MAGIC | |
1204 | case MC68MAGIC: | |
1205 | #endif | |
1206 | #ifdef NS32GMAGIC | |
1207 | case NS32GMAGIC: | |
1208 | case NS32SMAGIC: | |
1209 | #endif | |
1210 | #ifdef I386MAGIC | |
1211 | case I386MAGIC: | |
1212 | #endif | |
1213 | #ifdef CLIPPERMAGIC | |
1214 | case CLIPPERMAGIC: | |
1215 | #endif | |
1216 | #if defined (MC68KWRMAGIC) \ | |
1217 | && (!defined (MC68MAGIC) || MC68KWRMAGIC != MC68MAGIC) | |
1218 | case MC68KWRMAGIC: | |
1219 | #endif | |
1220 | #ifdef MC68KROMAGIC | |
1221 | case MC68KROMAGIC: | |
1222 | case MC68KPGMAGIC: | |
1223 | #endif | |
1224 | #ifdef MC88DGMAGIC | |
1225 | case MC88DGMAGIC: | |
1226 | #endif | |
1227 | #ifdef MC88MAGIC | |
1228 | case MC88MAGIC: | |
1229 | #endif | |
1230 | #ifdef I960ROMAGIC | |
1231 | case I960ROMAGIC: /* Intel 960 */ | |
1232 | #endif | |
1233 | #ifdef I960RWMAGIC | |
1234 | case I960RWMAGIC: /* Intel 960 */ | |
1235 | #endif | |
1236 | return file_hdr->f_nsyms; | |
1237 | ||
1238 | default: | |
1239 | #ifdef BADMAG | |
1240 | if (BADMAG(file_hdr)) | |
1241 | return -1; | |
1242 | else | |
1243 | return file_hdr->f_nsyms; | |
1244 | #else | |
1245 | return -1; | |
1246 | #endif | |
1247 | } | |
1248 | } | |
1249 | #endif | |
1250 | ||
dcc35536 JG |
1251 | /* Read the next symbol, swap it, and return it in both internal_syment |
1252 | form, and coff_symbol form. Also return its first auxent, if any, | |
1253 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1254 | |
1255 | static void | |
1256 | read_one_sym (cs, sym, aux) | |
1257 | register struct coff_symbol *cs; | |
dcc35536 JG |
1258 | register struct internal_syment *sym; |
1259 | register union internal_auxent *aux; | |
bd5635a1 | 1260 | { |
bd5635a1 RP |
1261 | int i; |
1262 | ||
1263 | cs->c_symnum = symnum; | |
d8ce1326 JG |
1264 | fread (temp_sym, local_symesz, 1, nlist_stream_global); |
1265 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); | |
e64fbb3a JG |
1266 | cs->c_naux = sym->n_numaux & 0xff; |
1267 | if (cs->c_naux >= 1) | |
bd5635a1 | 1268 | { |
d8ce1326 JG |
1269 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
1270 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, | |
1271 | (char *)aux); | |
bd5635a1 RP |
1272 | /* If more than one aux entry, read past it (only the first aux |
1273 | is important). */ | |
e64fbb3a | 1274 | for (i = 1; i < cs->c_naux; i++) |
d8ce1326 | 1275 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
bd5635a1 RP |
1276 | } |
1277 | cs->c_name = getsymname (sym); | |
1278 | cs->c_value = sym->n_value; | |
1279 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1280 | cs->c_secnum = sym->n_scnum; | |
1281 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1282 | if (!SDB_TYPE (cs->c_type)) |
1283 | cs->c_type = 0; | |
bd5635a1 | 1284 | |
e64fbb3a | 1285 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1286 | } |
1287 | \f | |
1288 | /* Support for string table handling */ | |
1289 | ||
1290 | static char *stringtab = NULL; | |
1291 | ||
1292 | static int | |
1293 | init_stringtab (chan, offset) | |
1294 | int chan; | |
1295 | long offset; | |
1296 | { | |
1297 | long length; | |
1298 | int val; | |
1299 | unsigned char lengthbuf[4]; | |
1300 | ||
1301 | if (stringtab) | |
1302 | { | |
1303 | free (stringtab); | |
1304 | stringtab = NULL; | |
1305 | } | |
1306 | ||
1307 | if (lseek (chan, offset, 0) < 0) | |
1308 | return -1; | |
1309 | ||
1310 | val = myread (chan, (char *)lengthbuf, sizeof lengthbuf); | |
dcc35536 | 1311 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1312 | |
1313 | /* If no string table is needed, then the file may end immediately | |
1314 | after the symbols. Just return with `stringtab' set to null. */ | |
1315 | if (val != sizeof length || length < sizeof length) | |
1316 | return 0; | |
1317 | ||
1318 | stringtab = (char *) xmalloc (length); | |
1319 | if (stringtab == NULL) | |
1320 | return -1; | |
1321 | ||
1322 | bcopy (&length, stringtab, sizeof length); | |
1323 | if (length == sizeof length) /* Empty table -- just the count */ | |
1324 | return 0; | |
1325 | ||
1326 | val = myread (chan, stringtab + sizeof length, length - sizeof length); | |
1327 | if (val != length - sizeof length || stringtab[length - 1] != '\0') | |
1328 | return -1; | |
1329 | ||
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | static void | |
1334 | free_stringtab () | |
1335 | { | |
1336 | if (stringtab) | |
1337 | free (stringtab); | |
1338 | stringtab = NULL; | |
1339 | } | |
1340 | ||
1341 | static char * | |
1342 | getsymname (symbol_entry) | |
dcc35536 | 1343 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1344 | { |
1345 | static char buffer[SYMNMLEN+1]; | |
1346 | char *result; | |
1347 | ||
dcc35536 | 1348 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1349 | { |
dcc35536 | 1350 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1351 | } |
1352 | else | |
1353 | { | |
dcc35536 | 1354 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1355 | buffer[SYMNMLEN] = '\0'; |
1356 | result = buffer; | |
1357 | } | |
1358 | return result; | |
1359 | } | |
1360 | ||
1361 | static char * | |
1362 | getfilename (aux_entry) | |
dcc35536 | 1363 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1364 | { |
1365 | static char buffer[BUFSIZ]; | |
1366 | register char *temp; | |
1367 | char *result; | |
bd5635a1 RP |
1368 | |
1369 | #ifndef COFF_NO_LONG_FILE_NAMES | |
8aa13b87 JK |
1370 | #if defined (x_zeroes) |
1371 | /* Data General. */ | |
1372 | if (aux_entry->x_zeroes == 0) | |
1373 | strcpy (buffer, stringtab + aux_entry->x_offset); | |
1374 | #else /* no x_zeroes */ | |
bd5635a1 RP |
1375 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1376 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
8aa13b87 | 1377 | #endif /* no x_zeroes */ |
bd5635a1 RP |
1378 | else |
1379 | #endif /* COFF_NO_LONG_FILE_NAMES */ | |
1380 | { | |
1381 | #if defined (x_name) | |
1382 | /* Data General. */ | |
1383 | strncpy (buffer, aux_entry->x_name, FILNMLEN); | |
1384 | #else | |
1385 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1386 | #endif | |
1387 | buffer[FILNMLEN] = '\0'; | |
1388 | } | |
1389 | result = buffer; | |
318bf84f | 1390 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1391 | result = temp + 1; |
1392 | return (result); | |
1393 | } | |
1394 | \f | |
1395 | /* Support for line number handling */ | |
1396 | static char *linetab = NULL; | |
1397 | static long linetab_offset; | |
1398 | static unsigned long linetab_size; | |
1399 | ||
dcc35536 JG |
1400 | /* Read in all the line numbers for fast lookups later. Leave them in |
1401 | external (unswapped) format in memory; we'll swap them as we enter | |
1402 | them into GDB's data structures. */ | |
bd5635a1 RP |
1403 | |
1404 | static int | |
1405 | init_lineno (chan, offset, size) | |
1406 | int chan; | |
1407 | long offset; | |
1408 | int size; | |
1409 | { | |
1410 | int val; | |
bd5635a1 | 1411 | |
61a7292f SG |
1412 | linetab_offset = offset; |
1413 | linetab_size = size; | |
1414 | ||
1415 | if (size == 0) | |
1416 | return 0; | |
1417 | ||
bd5635a1 RP |
1418 | if (lseek (chan, offset, 0) < 0) |
1419 | return -1; | |
1420 | ||
e64fbb3a JG |
1421 | /* Allocate the desired table, plus a sentinel */ |
1422 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 RP |
1423 | |
1424 | val = myread (chan, linetab, size); | |
1425 | if (val != size) | |
1426 | return -1; | |
1427 | ||
e64fbb3a JG |
1428 | /* Terminate it with an all-zero sentinel record */ |
1429 | bzero (linetab + size, local_linesz); | |
1430 | ||
bd5635a1 RP |
1431 | make_cleanup (free, linetab); /* Be sure it gets de-allocated. */ |
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | #if !defined (L_LNNO32) | |
1436 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1437 | #endif | |
1438 | ||
1439 | static void | |
1440 | enter_linenos (file_offset, first_line, last_line) | |
1441 | long file_offset; | |
1442 | register int first_line; | |
1443 | register int last_line; | |
1444 | { | |
1445 | register char *rawptr; | |
dcc35536 | 1446 | struct internal_lineno lptr; |
bd5635a1 RP |
1447 | |
1448 | if (file_offset < linetab_offset) | |
1449 | { | |
318bf84f | 1450 | complain (&lineno_complaint, (char *) file_offset); |
63989338 JG |
1451 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1452 | return; | |
1453 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1454 | } |
1455 | ||
1456 | rawptr = &linetab[file_offset - linetab_offset]; | |
1457 | ||
1458 | /* skip first line entry for each function */ | |
d8ce1326 | 1459 | rawptr += local_linesz; |
bd5635a1 RP |
1460 | /* line numbers start at one for the first line of the function */ |
1461 | first_line--; | |
1462 | ||
dcc35536 | 1463 | for (;;) { |
d8ce1326 JG |
1464 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1465 | rawptr += local_linesz; | |
e64fbb3a | 1466 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1467 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
318bf84f | 1468 | coff_record_line (first_line + L_LNNO32 (&lptr), lptr.l_addr.l_paddr); |
dcc35536 JG |
1469 | else |
1470 | break; | |
1471 | } | |
bd5635a1 RP |
1472 | } |
1473 | \f | |
bd5635a1 RP |
1474 | static void |
1475 | patch_type (type, real_type) | |
1476 | struct type *type; | |
1477 | struct type *real_type; | |
1478 | { | |
1479 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1480 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1481 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1482 | ||
1483 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1484 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1485 | TYPE_FIELDS (target) = (struct field *) | |
318bf84f | 1486 | obstack_alloc (¤t_objfile -> type_obstack, field_size); |
bd5635a1 RP |
1487 | |
1488 | bcopy (TYPE_FIELDS (real_target), TYPE_FIELDS (target), field_size); | |
1489 | ||
1490 | if (TYPE_NAME (real_target)) | |
1491 | { | |
1492 | if (TYPE_NAME (target)) | |
1493 | free (TYPE_NAME (target)); | |
58ae87f6 | 1494 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1495 | } |
1496 | } | |
1497 | ||
7e258d18 | 1498 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
f70be3e4 | 1499 | so that they can be used to print out opaque data structures properly. */ |
bd5635a1 | 1500 | |
f70be3e4 JG |
1501 | static void |
1502 | patch_opaque_types (s) | |
318bf84f | 1503 | struct symtab *s; |
318bf84f FF |
1504 | { |
1505 | register struct block *b; | |
1506 | register int i; | |
1507 | register struct symbol *real_sym; | |
1508 | ||
1509 | /* Go through the per-file symbols only */ | |
1510 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1511 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1512 | { |
318bf84f FF |
1513 | /* Find completed typedefs to use to fix opaque ones. |
1514 | Remove syms from the chain when their types are stored, | |
1515 | but search the whole chain, as there may be several syms | |
1516 | from different files with the same name. */ | |
1517 | real_sym = BLOCK_SYM (b, i); | |
1518 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1519 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1520 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1521 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1522 | { |
318bf84f FF |
1523 | register char *name = SYMBOL_NAME (real_sym); |
1524 | register int hash = hashname (name); | |
1525 | register struct symbol *sym, *prev; | |
1526 | ||
1527 | prev = 0; | |
1528 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1529 | { |
318bf84f FF |
1530 | if (name[0] == SYMBOL_NAME (sym)[0] && |
1531 | !strcmp (name + 1, SYMBOL_NAME (sym) + 1)) | |
bd5635a1 | 1532 | { |
318bf84f | 1533 | if (prev) |
bd5635a1 | 1534 | { |
318bf84f | 1535 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1536 | } |
1537 | else | |
1538 | { | |
318bf84f | 1539 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1540 | } |
318bf84f FF |
1541 | |
1542 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1543 | ||
1544 | if (prev) | |
1545 | { | |
1546 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | sym = opaque_type_chain[hash]; | |
1551 | } | |
1552 | } | |
1553 | else | |
1554 | { | |
1555 | prev = sym; | |
1556 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1557 | } |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | } | |
1562 | \f | |
bd5635a1 | 1563 | static struct symbol * |
318bf84f | 1564 | process_coff_symbol (cs, aux, objfile) |
bd5635a1 | 1565 | register struct coff_symbol *cs; |
dcc35536 | 1566 | register union internal_auxent *aux; |
318bf84f | 1567 | struct objfile *objfile; |
bd5635a1 RP |
1568 | { |
1569 | register struct symbol *sym | |
318bf84f | 1570 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
bd5635a1 RP |
1571 | char *name; |
1572 | #ifdef NAMES_HAVE_UNDERSCORE | |
1573 | int offset = 1; | |
1574 | #else | |
1575 | int offset = 0; | |
1576 | #endif | |
318bf84f | 1577 | struct type *temptype; |
bd5635a1 RP |
1578 | |
1579 | bzero (sym, sizeof (struct symbol)); | |
1580 | name = cs->c_name; | |
1581 | name = (name[0] == '_' ? name + offset : name); | |
318bf84f | 1582 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, strlen (name)); |
bd5635a1 RP |
1583 | |
1584 | /* default assumptions */ | |
1585 | SYMBOL_VALUE (sym) = cs->c_value; | |
1586 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1587 | ||
1588 | if (ISFCN (cs->c_type)) | |
1589 | { | |
d8ce1326 JG |
1590 | #if 0 |
1591 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1592 | /* Generate a template for the type of this function. The | |
1593 | types of the arguments will be added as we read the symbol | |
1594 | table. */ | |
1595 | struct type *new = (struct type *) | |
318bf84f | 1596 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 JG |
1597 | |
1598 | bcopy(lookup_function_type (decode_function_type (cs, cs->c_type, aux)), | |
1599 | new, sizeof(struct type)); | |
1600 | SYMBOL_TYPE (sym) = new; | |
1601 | in_function_type = SYMBOL_TYPE(sym); | |
1602 | #else | |
1603 | SYMBOL_TYPE(sym) = | |
1604 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1605 | #endif | |
1606 | ||
bd5635a1 RP |
1607 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1608 | if (cs->c_sclass == C_STAT) | |
318bf84f | 1609 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 | 1610 | else if (cs->c_sclass == C_EXT) |
318bf84f | 1611 | coff_add_symbol_to_list (sym, &coff_global_symbols); |
bd5635a1 RP |
1612 | } |
1613 | else | |
1614 | { | |
1615 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1616 | switch (cs->c_sclass) | |
1617 | { | |
1618 | case C_NULL: | |
1619 | break; | |
1620 | ||
1621 | case C_AUTO: | |
1622 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
318bf84f | 1623 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1624 | break; |
1625 | ||
1626 | case C_EXT: | |
1627 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1628 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
318bf84f | 1629 | coff_add_symbol_to_list (sym, &coff_global_symbols); |
bd5635a1 RP |
1630 | break; |
1631 | ||
1632 | case C_STAT: | |
1633 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1634 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
1635 | if (within_function) { | |
1636 | /* Static symbol of local scope */ | |
318bf84f | 1637 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1638 | } |
1639 | else { | |
1640 | /* Static symbol at top level of file */ | |
318bf84f | 1641 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1642 | } |
1643 | break; | |
1644 | ||
d8ce1326 JG |
1645 | #ifdef C_GLBLREG /* AMD coff */ |
1646 | case C_GLBLREG: | |
1647 | #endif | |
bd5635a1 RP |
1648 | case C_REG: |
1649 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1650 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
318bf84f | 1651 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1652 | break; |
1653 | ||
1654 | case C_LABEL: | |
1655 | break; | |
1656 | ||
1657 | case C_ARG: | |
1658 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1659 | #if 0 |
7e258d18 | 1660 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1661 | /* Add parameter to function. */ |
1662 | add_param_to_type(&in_function_type,sym); | |
1663 | #endif | |
318bf84f | 1664 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1665 | #if !defined (BELIEVE_PCC_PROMOTION) |
1666 | /* If PCC says a parameter is a short or a char, | |
1667 | it is really an int. */ | |
318bf84f FF |
1668 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1669 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1670 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1671 | { | |
1672 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1673 | ? lookup_fundamental_type (current_objfile, | |
1674 | FT_UNSIGNED_INTEGER) | |
1675 | : temptype; | |
1676 | } | |
bd5635a1 RP |
1677 | #endif |
1678 | break; | |
1679 | ||
1680 | case C_REGPARM: | |
1681 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1682 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
318bf84f | 1683 | coff_add_symbol_to_list (sym, &coff_local_symbols); |
bd5635a1 RP |
1684 | #if !defined (BELIEVE_PCC_PROMOTION) |
1685 | /* If PCC says a parameter is a short or a char, | |
1686 | it is really an int. */ | |
318bf84f FF |
1687 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1688 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1689 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1690 | { | |
1691 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1692 | ? lookup_fundamental_type (current_objfile, | |
1693 | FT_UNSIGNED_INTEGER) | |
1694 | : temptype; | |
1695 | } | |
bd5635a1 RP |
1696 | #endif |
1697 | break; | |
1698 | ||
1699 | case C_TPDEF: | |
1700 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1701 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1702 | ||
1703 | /* If type has no name, give it one */ | |
318bf84f FF |
1704 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1705 | TYPE_NAME (SYMBOL_TYPE (sym)) = concat (SYMBOL_NAME (sym), NULL); | |
bd5635a1 RP |
1706 | |
1707 | /* Keep track of any type which points to empty structured type, | |
f70be3e4 JG |
1708 | so it can be filled from a definition from another file. A |
1709 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1710 | empty structured type, though; the forward references | |
1711 | work themselves out via the magic of coff_lookup_type. */ | |
bd5635a1 | 1712 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && |
f70be3e4 JG |
1713 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && |
1714 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1715 | TYPE_CODE_UNDEF) | |
bd5635a1 RP |
1716 | { |
1717 | register int i = hashname (SYMBOL_NAME (sym)); | |
1718 | ||
1719 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1720 | opaque_type_chain[i] = sym; | |
1721 | } | |
318bf84f | 1722 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1723 | break; |
1724 | ||
1725 | case C_STRTAG: | |
1726 | case C_UNTAG: | |
1727 | case C_ENTAG: | |
1728 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1729 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
318bf84f | 1730 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
bd5635a1 RP |
1731 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1732 | = concat ("", | |
1733 | (cs->c_sclass == C_ENTAG | |
1734 | ? "enum " | |
1735 | : (cs->c_sclass == C_STRTAG | |
1736 | ? "struct " : "union ")), | |
58ae87f6 | 1737 | SYMBOL_NAME (sym), NULL); |
318bf84f | 1738 | coff_add_symbol_to_list (sym, &coff_file_symbols); |
bd5635a1 RP |
1739 | break; |
1740 | ||
1741 | default: | |
1742 | break; | |
1743 | } | |
1744 | } | |
1745 | return sym; | |
1746 | } | |
1747 | \f | |
1748 | /* Decode a coff type specifier; | |
1749 | return the type that is meant. */ | |
1750 | ||
1751 | static | |
1752 | struct type * | |
1753 | decode_type (cs, c_type, aux) | |
1754 | register struct coff_symbol *cs; | |
1755 | unsigned int c_type; | |
dcc35536 | 1756 | register union internal_auxent *aux; |
bd5635a1 RP |
1757 | { |
1758 | register struct type *type = 0; | |
1759 | unsigned int new_c_type; | |
1760 | ||
1761 | if (c_type & ~N_BTMASK) | |
1762 | { | |
1763 | new_c_type = DECREF (c_type); | |
1764 | if (ISPTR (c_type)) | |
1765 | { | |
1766 | type = decode_type (cs, new_c_type, aux); | |
1767 | type = lookup_pointer_type (type); | |
1768 | } | |
1769 | else if (ISFCN (c_type)) | |
1770 | { | |
1771 | type = decode_type (cs, new_c_type, aux); | |
1772 | type = lookup_function_type (type); | |
1773 | } | |
1774 | else if (ISARY (c_type)) | |
1775 | { | |
1776 | int i, n; | |
1777 | register unsigned short *dim; | |
1778 | struct type *base_type; | |
1779 | ||
1780 | /* Define an array type. */ | |
1781 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1782 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1783 | cs->c_naux = 0; |
bd5635a1 RP |
1784 | |
1785 | /* shift the indices down */ | |
1786 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1787 | i = 1; | |
1788 | n = dim[0]; | |
1789 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1790 | *dim = *(dim + 1); | |
1791 | *dim = 0; | |
1792 | ||
1793 | type = (struct type *) | |
318bf84f FF |
1794 | obstack_alloc (¤t_objfile -> type_obstack, |
1795 | sizeof (struct type)); | |
bd5635a1 | 1796 | bzero (type, sizeof (struct type)); |
318bf84f | 1797 | TYPE_OBJFILE (type) = current_objfile; |
bd5635a1 RP |
1798 | |
1799 | base_type = decode_type (cs, new_c_type, aux); | |
1800 | ||
1801 | TYPE_CODE (type) = TYPE_CODE_ARRAY; | |
1802 | TYPE_TARGET_TYPE (type) = base_type; | |
1803 | TYPE_LENGTH (type) = n * TYPE_LENGTH (base_type); | |
1804 | } | |
1805 | return type; | |
1806 | } | |
1807 | ||
f70be3e4 JG |
1808 | /* Reference to existing type. This only occurs with the |
1809 | struct, union, and enum types. EPI a29k coff | |
1810 | fakes us out by producing aux entries with a nonzero | |
1811 | x_tagndx for definitions of structs, unions, and enums, so we | |
1812 | have to check the c_sclass field. */ | |
e64fbb3a | 1813 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1814 | { |
f70be3e4 JG |
1815 | if (cs->c_sclass != C_STRTAG |
1816 | && cs->c_sclass != C_UNTAG | |
1817 | && cs->c_sclass != C_ENTAG) | |
1818 | { | |
1819 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1820 | return type; | |
1821 | } else { | |
1822 | complain (&tagndx_bad_complaint, cs->c_name); | |
1823 | /* And fall through to decode_base_type... */ | |
1824 | } | |
bd5635a1 RP |
1825 | } |
1826 | ||
1827 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1828 | } | |
1829 | ||
1830 | /* Decode a coff type specifier for function definition; | |
1831 | return the type that the function returns. */ | |
1832 | ||
1833 | static | |
1834 | struct type * | |
1835 | decode_function_type (cs, c_type, aux) | |
1836 | register struct coff_symbol *cs; | |
1837 | unsigned int c_type; | |
dcc35536 | 1838 | register union internal_auxent *aux; |
bd5635a1 | 1839 | { |
6988f5c0 | 1840 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1841 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1842 | |
1843 | return decode_type (cs, DECREF (c_type), aux); | |
1844 | } | |
1845 | \f | |
1846 | /* basic C types */ | |
1847 | ||
1848 | static | |
1849 | struct type * | |
1850 | decode_base_type (cs, c_type, aux) | |
1851 | register struct coff_symbol *cs; | |
1852 | unsigned int c_type; | |
dcc35536 | 1853 | register union internal_auxent *aux; |
bd5635a1 RP |
1854 | { |
1855 | struct type *type; | |
1856 | ||
1857 | switch (c_type) | |
1858 | { | |
1859 | case T_NULL: | |
1860 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1861 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1862 | |
8aa13b87 JK |
1863 | #if 0 |
1864 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1865 | #ifdef T_ARG |
1866 | case T_ARG: | |
1867 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1868 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1869 | #endif |
8aa13b87 | 1870 | #endif /* 0 */ |
bd5635a1 RP |
1871 | |
1872 | #ifdef T_VOID | |
1873 | case T_VOID: | |
1874 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1875 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1876 | #endif |
1877 | ||
1878 | case T_CHAR: | |
318bf84f | 1879 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1880 | |
1881 | case T_SHORT: | |
318bf84f | 1882 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1883 | |
1884 | case T_INT: | |
318bf84f | 1885 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1886 | |
1887 | case T_LONG: | |
318bf84f | 1888 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1889 | |
1890 | case T_FLOAT: | |
318bf84f | 1891 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1892 | |
1893 | case T_DOUBLE: | |
318bf84f | 1894 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1895 | |
1896 | case T_STRUCT: | |
e64fbb3a | 1897 | if (cs->c_naux != 1) |
bd5635a1 RP |
1898 | { |
1899 | /* anonymous structure type */ | |
1900 | type = coff_alloc_type (cs->c_symnum); | |
1901 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
58ae87f6 | 1902 | TYPE_NAME (type) = concat ("struct ", "<opaque>", NULL); |
be8303da | 1903 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1904 | TYPE_LENGTH (type) = 0; |
1905 | TYPE_FIELDS (type) = 0; | |
1906 | TYPE_NFIELDS (type) = 0; | |
1907 | } | |
1908 | else | |
1909 | { | |
318bf84f | 1910 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1911 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1912 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1913 | } |
1914 | return type; | |
1915 | ||
1916 | case T_UNION: | |
e64fbb3a | 1917 | if (cs->c_naux != 1) |
bd5635a1 RP |
1918 | { |
1919 | /* anonymous union type */ | |
1920 | type = coff_alloc_type (cs->c_symnum); | |
58ae87f6 | 1921 | TYPE_NAME (type) = concat ("union ", "<opaque>", NULL); |
be8303da | 1922 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1923 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1924 | TYPE_LENGTH (type) = 0; |
1925 | TYPE_FIELDS (type) = 0; | |
1926 | TYPE_NFIELDS (type) = 0; | |
1927 | } | |
1928 | else | |
1929 | { | |
318bf84f | 1930 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1931 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1932 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1933 | } |
1934 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1935 | return type; | |
1936 | ||
1937 | case T_ENUM: | |
318bf84f | 1938 | return coff_read_enum_type (cs->c_symnum, |
bd5635a1 | 1939 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1940 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1941 | |
1942 | case T_MOE: | |
1943 | /* shouldn't show up here */ | |
1944 | break; | |
1945 | ||
1946 | case T_UCHAR: | |
318bf84f | 1947 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1948 | |
1949 | case T_USHORT: | |
318bf84f | 1950 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1951 | |
1952 | case T_UINT: | |
318bf84f | 1953 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1954 | |
1955 | case T_ULONG: | |
318bf84f | 1956 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1957 | } |
7e258d18 | 1958 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1959 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1960 | } |
1961 | \f | |
1962 | /* This page contains subroutines of read_type. */ | |
1963 | ||
1964 | /* Read the description of a structure (or union type) | |
1965 | and return an object describing the type. */ | |
1966 | ||
1967 | static struct type * | |
318bf84f | 1968 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1969 | int index; |
1970 | int length; | |
1971 | int lastsym; | |
1972 | { | |
1973 | struct nextfield | |
1974 | { | |
1975 | struct nextfield *next; | |
1976 | struct field field; | |
1977 | }; | |
1978 | ||
1979 | register struct type *type; | |
1980 | register struct nextfield *list = 0; | |
1981 | struct nextfield *new; | |
1982 | int nfields = 0; | |
1983 | register int n; | |
1984 | char *name; | |
1985 | #ifdef NAMES_HAVE_UNDERSCORE | |
1986 | int offset = 1; | |
1987 | #else | |
1988 | int offset = 0; | |
1989 | #endif | |
1990 | struct coff_symbol member_sym; | |
1991 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1992 | struct internal_syment sub_sym; |
1993 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1994 | int done = 0; |
1995 | ||
1996 | type = coff_alloc_type (index); | |
1997 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1998 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1999 | TYPE_LENGTH (type) = length; |
2000 | ||
2001 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2002 | { | |
2003 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2004 | name = ms->c_name; | |
2005 | name = (name[0] == '_' ? name + offset : name); | |
2006 | ||
2007 | switch (ms->c_sclass) | |
2008 | { | |
2009 | case C_MOS: | |
2010 | case C_MOU: | |
2011 | ||
2012 | /* Get space to record the next field's data. */ | |
2013 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2014 | new->next = list; | |
2015 | list = new; | |
2016 | ||
2017 | /* Save the data. */ | |
2018 | list->field.name = savestring (name, strlen (name)); | |
2019 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
2020 | list->field.bitpos = 8 * ms->c_value; | |
2021 | list->field.bitsize = 0; | |
2022 | nfields++; | |
2023 | break; | |
2024 | ||
2025 | case C_FIELD: | |
2026 | ||
2027 | /* Get space to record the next field's data. */ | |
2028 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2029 | new->next = list; | |
2030 | list = new; | |
2031 | ||
2032 | /* Save the data. */ | |
2033 | list->field.name = savestring (name, strlen (name)); | |
2034 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
2035 | list->field.bitpos = ms->c_value; | |
2036 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
2037 | nfields++; | |
2038 | break; | |
2039 | ||
2040 | case C_EOS: | |
2041 | done = 1; | |
2042 | break; | |
2043 | } | |
2044 | } | |
2045 | /* Now create the vector of fields, and record how big it is. */ | |
2046 | ||
2047 | TYPE_NFIELDS (type) = nfields; | |
2048 | TYPE_FIELDS (type) = (struct field *) | |
318bf84f FF |
2049 | obstack_alloc (¤t_objfile -> type_obstack, |
2050 | sizeof (struct field) * nfields); | |
bd5635a1 RP |
2051 | |
2052 | /* Copy the saved-up fields into the field vector. */ | |
2053 | ||
2054 | for (n = nfields; list; list = list->next) | |
2055 | TYPE_FIELD (type, --n) = list->field; | |
2056 | ||
2057 | return type; | |
2058 | } | |
2059 | \f | |
2060 | /* Read a definition of an enumeration type, | |
2061 | and create and return a suitable type object. | |
2062 | Also defines the symbols that represent the values of the type. */ | |
e1ce8aa5 | 2063 | /* Currently assumes it's sizeof (int) and doesn't use length. */ |
bd5635a1 | 2064 | |
61a7292f | 2065 | /* ARGSUSED */ |
bd5635a1 | 2066 | static struct type * |
318bf84f | 2067 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
2068 | int index; |
2069 | int length; | |
2070 | int lastsym; | |
2071 | { | |
2072 | register struct symbol *sym; | |
2073 | register struct type *type; | |
2074 | int nsyms = 0; | |
2075 | int done = 0; | |
318bf84f | 2076 | struct coff_pending **symlist; |
bd5635a1 RP |
2077 | struct coff_symbol member_sym; |
2078 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
2079 | struct internal_syment sub_sym; |
2080 | union internal_auxent sub_aux; | |
318bf84f | 2081 | struct coff_pending *osyms, *syms; |
bd5635a1 RP |
2082 | register int n; |
2083 | char *name; | |
2084 | #ifdef NAMES_HAVE_UNDERSCORE | |
2085 | int offset = 1; | |
2086 | #else | |
2087 | int offset = 0; | |
2088 | #endif | |
2089 | ||
2090 | type = coff_alloc_type (index); | |
2091 | if (within_function) | |
318bf84f | 2092 | symlist = &coff_local_symbols; |
bd5635a1 | 2093 | else |
318bf84f | 2094 | symlist = &coff_file_symbols; |
bd5635a1 RP |
2095 | osyms = *symlist; |
2096 | ||
2097 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2098 | { | |
2099 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2100 | name = ms->c_name; | |
2101 | name = (name[0] == '_' ? name + offset : name); | |
2102 | ||
2103 | switch (ms->c_sclass) | |
2104 | { | |
2105 | case C_MOE: | |
2106 | sym = (struct symbol *) xmalloc (sizeof (struct symbol)); | |
2107 | bzero (sym, sizeof (struct symbol)); | |
2108 | ||
2109 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); | |
2110 | SYMBOL_CLASS (sym) = LOC_CONST; | |
2111 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2112 | SYMBOL_VALUE (sym) = ms->c_value; | |
318bf84f | 2113 | coff_add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
2114 | nsyms++; |
2115 | break; | |
2116 | ||
2117 | case C_EOS: | |
2118 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2119 | up the count of how many symbols to read. So stop | |
2120 | on .eos. */ | |
2121 | done = 1; | |
2122 | break; | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | /* Now fill in the fields of the type-structure. */ | |
2127 | ||
be8303da | 2128 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; |
bd5635a1 RP |
2129 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2130 | TYPE_NFIELDS (type) = nsyms; | |
2131 | TYPE_FIELDS (type) = (struct field *) | |
318bf84f FF |
2132 | obstack_alloc (¤t_objfile -> type_obstack, |
2133 | sizeof (struct field) * nsyms); | |
bd5635a1 RP |
2134 | |
2135 | /* Find the symbols for the values and put them into the type. | |
2136 | The symbols can be found in the symlist that we put them on | |
2137 | to cause them to be defined. osyms contains the old value | |
2138 | of that symlist; everything up to there was defined by us. */ | |
2139 | ||
2140 | for (syms = *symlist, n = nsyms; syms != osyms; syms = syms->next) | |
2141 | { | |
2142 | SYMBOL_TYPE (syms->symbol) = type; | |
2143 | TYPE_FIELD_NAME (type, --n) = SYMBOL_NAME (syms->symbol); | |
2144 | TYPE_FIELD_VALUE (type, n) = 0; | |
2145 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (syms->symbol); | |
2146 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2147 | } | |
d8ce1326 JG |
2148 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ |
2149 | if(TYPE_NFIELDS(type) == 2 && | |
2150 | ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") && | |
2151 | !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2152 | (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2153 | !strcmp(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
2154 | TYPE_CODE(type) = TYPE_CODE_BOOL; | |
bd5635a1 RP |
2155 | return type; |
2156 | } | |
2157 | ||
2158 | /* Register our ability to parse symbols for coff BFD files */ | |
2159 | ||
2160 | static struct sym_fns coff_sym_fns = | |
2161 | { | |
80d68b1d FF |
2162 | "coff", /* sym_name: name or name prefix of BFD target type */ |
2163 | 4, /* sym_namelen: number of significant sym_name chars */ | |
2164 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2165 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2166 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2167 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2168 | NULL /* next: pointer to next struct sym_fns */ | |
bd5635a1 RP |
2169 | }; |
2170 | ||
2171 | void | |
2172 | _initialize_coffread () | |
2173 | { | |
2174 | add_symtab_fns(&coff_sym_fns); | |
2175 | } |