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). |
f2c365f5 JK |
3 | Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993 |
4 | Free Software Foundation, Inc. | |
bd5635a1 RP |
5 | |
6 | This file is part of GDB. | |
7 | ||
99a7de40 | 8 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 9 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
10 | the Free Software Foundation; either version 2 of the License, or |
11 | (at your option) any later version. | |
bd5635a1 | 12 | |
99a7de40 | 13 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
99a7de40 JG |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
f2c365f5 | 21 | |
bd5635a1 | 22 | #include "defs.h" |
bd5635a1 | 23 | #include "symtab.h" |
318bf84f | 24 | #include "gdbtypes.h" |
bd5635a1 RP |
25 | #include "breakpoint.h" |
26 | #include "bfd.h" | |
bd5635a1 | 27 | #include "symfile.h" |
3624c875 | 28 | #include "objfiles.h" |
318bf84f | 29 | #include "buildsym.h" |
b5b186a2 | 30 | #include "gdb-stabs.h" |
51b80b00 | 31 | #include "complaints.h" |
bd5635a1 | 32 | #include <obstack.h> |
318bf84f | 33 | |
bd5635a1 RP |
34 | #include <string.h> |
35 | ||
fc773653 | 36 | #include <time.h> /* For time_t in libbfd.h. */ |
f0fcf00a | 37 | #include <sys/types.h> /* For time_t, if not in time.h. */ |
de9bef49 | 38 | #include "libbfd.h" /* FIXME secret internal data from BFD */ |
f5f0679a | 39 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
63989338 JG |
40 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
41 | ||
b5b186a2 SS |
42 | struct coff_symfile_info { |
43 | asection *text_sect; /* Text section accessor */ | |
44 | int symcount; /* How many symbols are there in the file */ | |
45 | char *stringtab; /* The actual string table */ | |
46 | int stringtab_size; /* Its size */ | |
47 | file_ptr symtab_offset; /* Offset in file to symbol table */ | |
48 | int symbol_size; /* Bytes in a single symbol */ | |
49 | struct stab_section_info *stab_section_info; /* section starting points | |
50 | of the original .o files before linking. */ | |
51 | ||
52 | asection *stabsect; /* Section pointer for .stab section */ | |
53 | asection *stabstrsect; /* Section pointer for .stab section */ | |
54 | asection *stabindexsect; /* Section pointer for .stab.index section */ | |
55 | char *stabstrdata; | |
56 | ||
57 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
58 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
59 | }; | |
60 | ||
de9bef49 JG |
61 | /* Translate an external name string into a user-visible name. */ |
62 | #define EXTERNAL_NAME(string, abfd) \ | |
63 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
64 | ||
8714ff35 JK |
65 | /* To be an sdb debug type, type must have at least a basic or primary |
66 | derived type. Using this rather than checking against T_NULL is | |
ab8f22a9 JK |
67 | said to prevent core dumps if we try to operate on Michael Bloom |
68 | dbx-in-coff file. */ | |
8714ff35 JK |
69 | |
70 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
71 | ||
d8ce1326 JG |
72 | /* |
73 | * Convert from an sdb register number to an internal gdb register number. | |
74 | * This should be defined in tm.h, if REGISTER_NAMES is not set up | |
75 | * to map one to one onto the sdb register numbers. | |
76 | */ | |
77 | #ifndef SDB_REG_TO_REGNUM | |
78 | # define SDB_REG_TO_REGNUM(value) (value) | |
79 | #endif | |
80 | ||
bd5635a1 RP |
81 | /* Core address of start and end of text of current source file. |
82 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
83 | ||
84 | static CORE_ADDR cur_src_start_addr; | |
85 | static CORE_ADDR cur_src_end_addr; | |
86 | ||
87 | /* Core address of the end of the first object file. */ | |
88 | static CORE_ADDR first_object_file_end; | |
89 | ||
bd5635a1 RP |
90 | /* The addresses of the symbol table stream and number of symbols |
91 | of the object file we are reading (as copied into core). */ | |
92 | ||
93 | static FILE *nlist_stream_global; | |
94 | static int nlist_nsyms_global; | |
95 | ||
bd5635a1 RP |
96 | /* Vector of line number information. */ |
97 | ||
98 | static struct linetable *line_vector; | |
99 | ||
100 | /* Index of next entry to go in line_vector_index. */ | |
101 | ||
102 | static int line_vector_index; | |
103 | ||
104 | /* Last line number recorded in the line vector. */ | |
105 | ||
106 | static int prev_line_number; | |
107 | ||
108 | /* Number of elements allocated for line_vector currently. */ | |
109 | ||
110 | static int line_vector_length; | |
111 | ||
d8ce1326 JG |
112 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
113 | ||
114 | static char *temp_sym; | |
115 | static char *temp_aux; | |
116 | ||
117 | /* Local variables that hold the shift and mask values for the | |
118 | COFF file that we are currently reading. These come back to us | |
119 | from BFD, and are referenced by their macro names, as well as | |
120 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
121 | macros from ../internalcoff.h . */ | |
122 | ||
123 | static unsigned local_n_btmask; | |
124 | static unsigned local_n_btshft; | |
125 | static unsigned local_n_tmask; | |
126 | static unsigned local_n_tshift; | |
127 | ||
128 | #define N_BTMASK local_n_btmask | |
129 | #define N_BTSHFT local_n_btshft | |
130 | #define N_TMASK local_n_tmask | |
131 | #define N_TSHIFT local_n_tshift | |
132 | ||
133 | /* Local variables that hold the sizes in the file of various COFF structures. | |
134 | (We only need to know this to read them from the file -- BFD will then | |
135 | translate the data in them, into `internal_xxx' structs in the right | |
136 | byte order, alignment, etc.) */ | |
137 | ||
138 | static unsigned local_linesz; | |
139 | static unsigned local_symesz; | |
140 | static unsigned local_auxesz; | |
141 | ||
142 | ||
bd5635a1 RP |
143 | /* Chain of typedefs of pointers to empty struct/union types. |
144 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
145 | ||
bd5635a1 RP |
146 | static struct symbol *opaque_type_chain[HASHSIZE]; |
147 | ||
d8ce1326 JG |
148 | #if 0 |
149 | /* The type of the function we are currently reading in. This is | |
150 | used by define_symbol to record the type of arguments to a function. */ | |
151 | ||
152 | struct type *in_function_type; | |
153 | #endif | |
154 | ||
bd5635a1 RP |
155 | struct pending_block *pending_blocks; |
156 | ||
bd5635a1 RP |
157 | /* Complaints about various problems in the file being read */ |
158 | ||
159 | struct complaint ef_complaint = | |
160 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
161 | ||
7e258d18 PB |
162 | struct complaint bf_no_aux_complaint = |
163 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
164 | ||
165 | struct complaint ef_no_aux_complaint = | |
166 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 167 | |
63989338 JG |
168 | struct complaint lineno_complaint = |
169 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
170 | ||
7e258d18 PB |
171 | struct complaint unexpected_type_complaint = |
172 | {"Unexpected type for symbol %s", 0, 0}; | |
173 | ||
174 | struct complaint bad_sclass_complaint = | |
175 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f | 176 | |
f70be3e4 JG |
177 | struct complaint misordered_blocks_complaint = |
178 | {"Blocks out of order at address %x", 0, 0}; | |
179 | ||
180 | struct complaint tagndx_bad_complaint = | |
181 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; | |
182 | ||
de9bef49 JG |
183 | struct complaint eb_complaint = |
184 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
185 | ||
318bf84f FF |
186 | /* Simplified internal version of coff symbol table information */ |
187 | ||
188 | struct coff_symbol { | |
189 | char *c_name; | |
190 | int c_symnum; /* symbol number of this entry */ | |
191 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
192 | long c_value; | |
193 | int c_sclass; | |
194 | int c_secnum; | |
195 | unsigned int c_type; | |
196 | }; | |
197 | ||
198 | static struct type * | |
199 | coff_read_struct_type PARAMS ((int, int, int)); | |
200 | ||
201 | static struct type * | |
202 | decode_base_type PARAMS ((struct coff_symbol *, unsigned int, | |
203 | union internal_auxent *)); | |
204 | ||
205 | static struct type * | |
206 | decode_type PARAMS ((struct coff_symbol *, unsigned int, | |
207 | union internal_auxent *)); | |
208 | ||
209 | static struct type * | |
210 | decode_function_type PARAMS ((struct coff_symbol *, unsigned int, | |
211 | union internal_auxent *)); | |
212 | ||
213 | static struct type * | |
214 | coff_read_enum_type PARAMS ((int, int, int)); | |
215 | ||
318bf84f FF |
216 | static struct symbol * |
217 | process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *, | |
218 | struct objfile *)); | |
219 | ||
f70be3e4 JG |
220 | static void |
221 | patch_opaque_types PARAMS ((struct symtab *)); | |
318bf84f FF |
222 | |
223 | static void | |
224 | patch_type PARAMS ((struct type *, struct type *)); | |
225 | ||
226 | static void | |
227 | enter_linenos PARAMS ((long, int, int)); | |
228 | ||
e09c5e26 JK |
229 | static void |
230 | free_linetab PARAMS ((void)); | |
231 | ||
318bf84f FF |
232 | static int |
233 | init_lineno PARAMS ((int, long, int)); | |
234 | ||
235 | static char * | |
236 | getfilename PARAMS ((union internal_auxent *)); | |
237 | ||
238 | static char * | |
239 | getsymname PARAMS ((struct internal_syment *)); | |
240 | ||
241 | static void | |
242 | free_stringtab PARAMS ((void)); | |
243 | ||
244 | static int | |
245 | init_stringtab PARAMS ((int, long)); | |
246 | ||
247 | static void | |
248 | read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *, | |
249 | union internal_auxent *)); | |
250 | ||
251 | static void | |
f70be3e4 | 252 | read_coff_symtab PARAMS ((long, int, struct objfile *)); |
318bf84f FF |
253 | |
254 | static void | |
80d68b1d | 255 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); |
318bf84f FF |
256 | |
257 | static void | |
80d68b1d | 258 | coff_symfile_init PARAMS ((struct objfile *)); |
318bf84f FF |
259 | |
260 | static void | |
80d68b1d | 261 | coff_new_init PARAMS ((struct objfile *)); |
318bf84f FF |
262 | |
263 | static void | |
85f0a848 | 264 | coff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
80d68b1d FF |
265 | |
266 | static void | |
267 | coff_symfile_finish PARAMS ((struct objfile *)); | |
318bf84f FF |
268 | |
269 | static void | |
f70be3e4 | 270 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type)); |
318bf84f FF |
271 | |
272 | static void | |
273 | coff_end_symtab PARAMS ((struct objfile *)); | |
274 | ||
275 | static void | |
276 | complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); | |
277 | ||
278 | static void | |
279 | coff_start_symtab PARAMS ((void)); | |
280 | ||
281 | static void | |
282 | coff_record_line PARAMS ((int, CORE_ADDR)); | |
283 | ||
318bf84f FF |
284 | static struct type * |
285 | coff_alloc_type PARAMS ((int)); | |
286 | ||
287 | static struct type ** | |
288 | coff_lookup_type PARAMS ((int)); | |
289 | ||
bd5635a1 | 290 | \f |
b5b186a2 SS |
291 | static void |
292 | coff_locate_sections PARAMS ((bfd *, asection *, PTR)); | |
293 | ||
294 | /* We are called once per section from coff_symfile_read. We | |
295 | need to examine each section we are passed, check to see | |
296 | if it is something we are interested in processing, and | |
297 | if so, stash away some access information for the section. | |
298 | ||
299 | FIXME: The section names should not be hardwired strings. */ | |
300 | ||
301 | static void | |
302 | coff_locate_sections (ignore_abfd, sectp, csip) | |
303 | bfd *ignore_abfd; | |
304 | asection *sectp; | |
305 | PTR csip; | |
306 | { | |
307 | register struct coff_symfile_info *csi; | |
308 | ||
309 | csi = (struct coff_symfile_info *) csip; | |
310 | if (STREQ (sectp->name, ".stab")) | |
311 | { | |
312 | csi->stabsect = sectp; | |
313 | } | |
314 | else if (STREQ (sectp->name, ".stabstr")) | |
315 | { | |
316 | csi->stabstrsect = sectp; | |
317 | } | |
318 | else if (STREQ (sectp->name, ".stab.index")) | |
319 | { | |
320 | csi->stabindexsect = sectp; | |
321 | } | |
322 | } | |
323 | ||
bd5635a1 RP |
324 | /* Look up a coff type-number index. Return the address of the slot |
325 | where the type for that index is stored. | |
326 | The type-number is in INDEX. | |
327 | ||
328 | This can be used for finding the type associated with that index | |
329 | or for associating a new type with the index. */ | |
330 | ||
331 | static struct type ** | |
332 | coff_lookup_type (index) | |
333 | register int index; | |
334 | { | |
335 | if (index >= type_vector_length) | |
336 | { | |
337 | int old_vector_length = type_vector_length; | |
338 | ||
339 | type_vector_length *= 2; | |
f2c365f5 | 340 | if (index /* is still */ >= type_vector_length) { |
bd5635a1 RP |
341 | type_vector_length = index * 2; |
342 | } | |
159a075e | 343 | type_vector = (struct type **) |
318bf84f FF |
344 | xrealloc ((char *) type_vector, |
345 | type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 346 | memset (&type_vector[old_vector_length], 0, |
bd5635a1 RP |
347 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
348 | } | |
159a075e | 349 | return &type_vector[index]; |
bd5635a1 RP |
350 | } |
351 | ||
352 | /* Make sure there is a type allocated for type number index | |
353 | and return the type object. | |
354 | This can create an empty (zeroed) type object. */ | |
355 | ||
356 | static struct type * | |
357 | coff_alloc_type (index) | |
358 | int index; | |
359 | { | |
360 | register struct type **type_addr = coff_lookup_type (index); | |
361 | register struct type *type = *type_addr; | |
362 | ||
363 | /* If we are referring to a type not known at all yet, | |
364 | allocate an empty type for it. | |
365 | We will fill it in later if we find out how. */ | |
318bf84f | 366 | if (type == NULL) |
bd5635a1 | 367 | { |
318bf84f | 368 | type = alloc_type (current_objfile); |
bd5635a1 RP |
369 | *type_addr = type; |
370 | } | |
371 | return type; | |
372 | } | |
373 | \f | |
e1ce8aa5 | 374 | static void |
318bf84f | 375 | coff_record_line (line, pc) |
bd5635a1 RP |
376 | int line; |
377 | CORE_ADDR pc; | |
378 | { | |
379 | struct linetable_entry *e; | |
380 | /* Make sure line vector is big enough. */ | |
381 | ||
382 | if (line_vector_index + 2 >= line_vector_length) | |
383 | { | |
384 | line_vector_length *= 2; | |
385 | line_vector = (struct linetable *) | |
318bf84f | 386 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
387 | + (line_vector_length |
388 | * sizeof (struct linetable_entry))); | |
389 | } | |
390 | ||
391 | e = line_vector->item + line_vector_index++; | |
392 | e->line = line; e->pc = pc; | |
393 | } | |
394 | \f | |
395 | /* Start a new symtab for a new source file. | |
396 | This is called when a COFF ".file" symbol is seen; | |
397 | it indicates the start of data for one original source file. */ | |
398 | ||
399 | static void | |
318bf84f | 400 | coff_start_symtab () |
bd5635a1 | 401 | { |
c438b3af | 402 | start_symtab ( |
6b510f8f JK |
403 | /* We fill in the filename later. start_symtab |
404 | puts this pointer into last_source file and in | |
405 | coff_end_symtab we assume we can free() it. | |
3ffb74b9 JK |
406 | FIXME: leaks memory. */ |
407 | savestring ("", 0), | |
c438b3af JK |
408 | /* We never know the directory name for COFF. */ |
409 | NULL, | |
410 | /* The start address is irrelevant, since we set | |
411 | last_source_start_addr in coff_end_symtab. */ | |
412 | 0); | |
bd5635a1 | 413 | |
cadbb07a | 414 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 415 | |
cadbb07a | 416 | if (line_vector) /* Unlikely, but maybe possible? */ |
f70be3e4 | 417 | free ((PTR)line_vector); |
bd5635a1 RP |
418 | line_vector_index = 0; |
419 | line_vector_length = 1000; | |
420 | prev_line_number = -2; /* Force first line number to be explicit */ | |
421 | line_vector = (struct linetable *) | |
422 | xmalloc (sizeof (struct linetable) | |
423 | + line_vector_length * sizeof (struct linetable_entry)); | |
424 | } | |
425 | ||
426 | /* Save the vital information from when starting to read a file, | |
427 | for use when closing off the current file. | |
428 | NAME is the file name the symbols came from, START_ADDR is the first | |
429 | text address for the file, and SIZE is the number of bytes of text. */ | |
430 | ||
431 | static void | |
432 | complete_symtab (name, start_addr, size) | |
433 | char *name; | |
434 | CORE_ADDR start_addr; | |
435 | unsigned int size; | |
436 | { | |
437 | last_source_file = savestring (name, strlen (name)); | |
438 | cur_src_start_addr = start_addr; | |
439 | cur_src_end_addr = start_addr + size; | |
440 | ||
3624c875 FF |
441 | if (current_objfile -> ei.entry_point >= cur_src_start_addr && |
442 | current_objfile -> ei.entry_point < cur_src_end_addr) | |
bd5635a1 | 443 | { |
3624c875 FF |
444 | current_objfile -> ei.entry_file_lowpc = cur_src_start_addr; |
445 | current_objfile -> ei.entry_file_highpc = cur_src_end_addr; | |
bd5635a1 RP |
446 | } |
447 | } | |
448 | ||
449 | /* Finish the symbol definitions for one main source file, | |
450 | close off all the lexical contexts for that file | |
451 | (creating struct block's for them), then make the | |
452 | struct symtab for that file and put it in the list of all such. */ | |
453 | ||
454 | static void | |
318bf84f | 455 | coff_end_symtab (objfile) |
a048c8f5 | 456 | struct objfile *objfile; |
bd5635a1 | 457 | { |
c438b3af | 458 | struct symtab *symtab; |
bd5635a1 | 459 | |
c438b3af | 460 | last_source_start_addr = cur_src_start_addr; |
bd5635a1 | 461 | |
fc773653 JK |
462 | /* For no good reason, this file stores the number of entries in a |
463 | separate variable instead of in line_vector->nitems. Fix it. */ | |
464 | if (line_vector) | |
465 | line_vector->nitems = line_vector_index; | |
466 | ||
c438b3af JK |
467 | /* For COFF, we only have one subfile, so we can just look at |
468 | subfiles and not worry about there being other elements in the | |
469 | chain. We fill in various fields now because we didn't know them | |
470 | before (or because doing it now is simply an artifact of how this | |
471 | file used to be written). */ | |
472 | subfiles->line_vector = line_vector; | |
473 | subfiles->name = last_source_file; | |
bd5635a1 | 474 | |
c438b3af JK |
475 | /* sort_pending is needed for amdcoff, at least. |
476 | sort_linevec is needed for the SCO compiler. */ | |
477 | symtab = end_symtab (cur_src_end_addr, 1, 1, objfile, 0); | |
bd5635a1 | 478 | |
c438b3af JK |
479 | if (symtab != NULL) |
480 | free_named_symtabs (symtab->filename); | |
a6e2b424 | 481 | |
bd5635a1 RP |
482 | /* Reinitialize for beginning of new file. */ |
483 | line_vector = 0; | |
484 | line_vector_length = -1; | |
85f0a848 | 485 | last_source_file = NULL; |
bd5635a1 RP |
486 | } |
487 | \f | |
488 | static void | |
f70be3e4 | 489 | record_minimal_symbol (name, address, type) |
bd5635a1 RP |
490 | char *name; |
491 | CORE_ADDR address; | |
f70be3e4 | 492 | enum minimal_symbol_type type; |
bd5635a1 | 493 | { |
318bf84f | 494 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 495 | if (name[0] == '@') return; |
e140f1da | 496 | |
e09c5e26 | 497 | prim_record_minimal_symbol (savestring (name, strlen (name)), address, type); |
bd5635a1 RP |
498 | } |
499 | \f | |
500 | /* coff_symfile_init () | |
501 | is the coff-specific initialization routine for reading symbols. | |
3624c875 | 502 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
503 | the BFD for the file whose symbols are being read, and a slot for |
504 | a pointer to "private data" which we fill with cookies and other | |
505 | treats for coff_symfile_read (). | |
506 | ||
507 | We will only be called if this is a COFF or COFF-like file. | |
508 | BFD handles figuring out the format of the file, and code in symtab.c | |
509 | uses BFD's determination to vector to us. | |
510 | ||
511 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
512 | ||
d8ce1326 JG |
513 | static int text_bfd_scnum; |
514 | ||
9bba3334 | 515 | static void |
80d68b1d FF |
516 | coff_symfile_init (objfile) |
517 | struct objfile *objfile; | |
bd5635a1 | 518 | { |
b5b186a2 | 519 | asection *section, *strsection; |
80d68b1d | 520 | bfd *abfd = objfile->obfd; |
bd5635a1 RP |
521 | |
522 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
523 | objfile -> sym_private = xmmalloc (objfile -> md, |
524 | sizeof (struct coff_symfile_info)); | |
bd5635a1 | 525 | |
b5b186a2 SS |
526 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); |
527 | ||
3624c875 FF |
528 | init_entry_point_info (objfile); |
529 | ||
530 | /* Save the section number for the text section */ | |
b5b186a2 | 531 | section = bfd_get_section_by_name (abfd, ".text"); |
f70be3e4 | 532 | if (section) |
3624c875 | 533 | text_bfd_scnum = section->index; |
bd5635a1 | 534 | else |
b5b186a2 | 535 | text_bfd_scnum = -1; |
bd5635a1 RP |
536 | } |
537 | ||
538 | /* This function is called for every section; it finds the outer limits | |
539 | of the line table (minimum and maximum file offset) so that the | |
540 | mainline code can read the whole thing for efficiency. */ | |
541 | ||
e1ce8aa5 | 542 | /* ARGSUSED */ |
bd5635a1 RP |
543 | static void |
544 | find_linenos (abfd, asect, vpinfo) | |
545 | bfd *abfd; | |
546 | sec_ptr asect; | |
318bf84f | 547 | PTR vpinfo; |
bd5635a1 RP |
548 | { |
549 | struct coff_symfile_info *info; | |
550 | int size, count; | |
551 | file_ptr offset, maxoff; | |
552 | ||
553 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
554 | count = asect->lineno_count; | |
555 | /* End of warning */ | |
556 | ||
557 | if (count == 0) | |
558 | return; | |
d8ce1326 | 559 | size = count * local_linesz; |
bd5635a1 RP |
560 | |
561 | info = (struct coff_symfile_info *)vpinfo; | |
562 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
563 | offset = asect->line_filepos; | |
564 | /* End of warning */ | |
565 | ||
566 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
567 | info->min_lineno_offset = offset; | |
568 | ||
569 | maxoff = offset + size; | |
570 | if (maxoff > info->max_lineno_offset) | |
571 | info->max_lineno_offset = maxoff; | |
572 | } | |
573 | ||
574 | ||
e1ce8aa5 JK |
575 | /* The BFD for this file -- only good while we're actively reading |
576 | symbols into a psymtab or a symtab. */ | |
577 | ||
578 | static bfd *symfile_bfd; | |
579 | ||
bd5635a1 RP |
580 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
581 | /* FIXME! Addr and Mainline are not used yet -- this will not work for | |
582 | shared libraries or add_file! */ | |
583 | ||
61a7292f | 584 | /* ARGSUSED */ |
9bba3334 | 585 | static void |
85f0a848 | 586 | coff_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 587 | struct objfile *objfile; |
85f0a848 | 588 | struct section_offsets *section_offsets; |
bd5635a1 RP |
589 | int mainline; |
590 | { | |
80d68b1d FF |
591 | struct coff_symfile_info *info; |
592 | bfd *abfd = objfile->obfd; | |
d8ce1326 | 593 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 RP |
594 | char *name = bfd_get_filename (abfd); |
595 | int desc; | |
596 | register int val; | |
597 | int num_symbols; | |
598 | int symtab_offset; | |
599 | int stringtab_offset; | |
e09c5e26 | 600 | struct cleanup *back_to; |
b5b186a2 | 601 | int stabsize, stabstrsize; |
bd5635a1 | 602 | |
80d68b1d | 603 | info = (struct coff_symfile_info *) objfile -> sym_private; |
bd5635a1 RP |
604 | symfile_bfd = abfd; /* Kludge for swap routines */ |
605 | ||
606 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
d8ce1326 | 607 | desc = fileno ((FILE *)(abfd->iostream)); /* File descriptor */ |
bd5635a1 | 608 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
609 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
610 | stringtab_offset = symtab_offset + /* String table file offset */ | |
611 | num_symbols * cdata->local_symesz; | |
612 | ||
613 | /* Set a few file-statics that give us specific information about | |
614 | the particular COFF file format we're reading. */ | |
615 | local_linesz = cdata->local_linesz; | |
616 | local_n_btmask = cdata->local_n_btmask; | |
617 | local_n_btshft = cdata->local_n_btshft; | |
618 | local_n_tmask = cdata->local_n_tmask; | |
619 | local_n_tshift = cdata->local_n_tshift; | |
620 | local_linesz = cdata->local_linesz; | |
621 | local_symesz = cdata->local_symesz; | |
622 | local_auxesz = cdata->local_auxesz; | |
623 | ||
624 | /* Allocate space for raw symbol and aux entries, based on their | |
625 | space requirements as reported by BFD. */ | |
626 | temp_sym = (char *) xmalloc | |
627 | (cdata->local_symesz + cdata->local_auxesz); | |
628 | temp_aux = temp_sym + cdata->local_symesz; | |
e09c5e26 | 629 | back_to = make_cleanup (free_current_contents, &temp_sym); |
bd5635a1 RP |
630 | /* End of warning */ |
631 | ||
bd5635a1 RP |
632 | /* Read the line number table, all at once. */ |
633 | info->min_lineno_offset = 0; | |
634 | info->max_lineno_offset = 0; | |
b5b186a2 | 635 | bfd_map_over_sections (abfd, find_linenos, (PTR) info); |
bd5635a1 | 636 | |
e09c5e26 | 637 | make_cleanup (free_linetab, 0); |
bd5635a1 RP |
638 | val = init_lineno (desc, info->min_lineno_offset, |
639 | info->max_lineno_offset - info->min_lineno_offset); | |
640 | if (val < 0) | |
641 | error ("\"%s\": error reading line numbers\n", name); | |
642 | ||
643 | /* Now read the string table, all at once. */ | |
644 | ||
e09c5e26 | 645 | make_cleanup (free_stringtab, 0); |
bd5635a1 RP |
646 | val = init_stringtab (desc, stringtab_offset); |
647 | if (val < 0) | |
a048c8f5 | 648 | error ("\"%s\": can't get string table", name); |
bd5635a1 | 649 | |
318bf84f FF |
650 | init_minimal_symbol_collection (); |
651 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
652 | |
653 | /* Now that the executable file is positioned at symbol table, | |
654 | process it and define symbols accordingly. */ | |
655 | ||
f70be3e4 | 656 | read_coff_symtab ((long)symtab_offset, num_symbols, objfile); |
bd5635a1 RP |
657 | |
658 | /* Sort symbols alphabetically within each block. */ | |
659 | ||
660 | sort_all_symtab_syms (); | |
661 | ||
318bf84f FF |
662 | /* Install any minimal symbols that have been collected as the current |
663 | minimal symbols for this objfile. */ | |
bd5635a1 | 664 | |
80d68b1d | 665 | install_minimal_symbols (objfile); |
e09c5e26 | 666 | |
b5b186a2 SS |
667 | bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info); |
668 | ||
669 | if (info->stabsect) | |
670 | { | |
671 | /* dubious */ | |
672 | fseek ((FILE *) abfd->iostream, abfd->where, 0); | |
673 | ||
674 | stabsize = bfd_section_size (abfd, info->stabsect); | |
675 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
676 | ||
677 | coffstab_build_psymtabs (objfile, | |
678 | section_offsets, | |
679 | mainline, | |
680 | info->stabsect->filepos, stabsize, | |
681 | info->stabstrsect->filepos, stabstrsize); | |
682 | } | |
683 | ||
e09c5e26 | 684 | do_cleanups (back_to); |
bd5635a1 RP |
685 | } |
686 | ||
9bba3334 | 687 | static void |
f70be3e4 JG |
688 | coff_new_init (ignore) |
689 | struct objfile *ignore; | |
bd5635a1 | 690 | { |
bd5635a1 | 691 | } |
80d68b1d FF |
692 | |
693 | /* Perform any local cleanups required when we are done with a particular | |
694 | objfile. I.E, we are in the process of discarding all symbol information | |
695 | for an objfile, freeing up all memory held for it, and unlinking the | |
696 | objfile struct from the global list of known objfiles. */ | |
697 | ||
698 | static void | |
699 | coff_symfile_finish (objfile) | |
700 | struct objfile *objfile; | |
701 | { | |
702 | if (objfile -> sym_private != NULL) | |
703 | { | |
704 | mfree (objfile -> md, objfile -> sym_private); | |
705 | } | |
706 | } | |
707 | ||
bd5635a1 | 708 | \f |
bd5635a1 RP |
709 | /* Given pointers to a symbol table in coff style exec file, |
710 | analyze them and create struct symtab's describing the symbols. | |
711 | NSYMS is the number of symbols in the symbol table. | |
712 | We read them one at a time using read_one_sym (). */ | |
713 | ||
714 | static void | |
f70be3e4 JG |
715 | read_coff_symtab (symtab_offset, nsyms, objfile) |
716 | long symtab_offset; | |
bd5635a1 | 717 | int nsyms; |
a048c8f5 | 718 | struct objfile *objfile; |
bd5635a1 | 719 | { |
bd5635a1 | 720 | FILE *stream; |
c438b3af | 721 | register struct context_stack *new; |
bd5635a1 RP |
722 | struct coff_symbol coff_symbol; |
723 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
724 | static struct internal_syment main_sym; |
725 | static union internal_auxent main_aux; | |
bd5635a1 | 726 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
727 | static struct internal_syment fcn_sym_saved; |
728 | static union internal_auxent fcn_aux_saved; | |
f70be3e4 JG |
729 | struct symtab *s; |
730 | ||
bd5635a1 RP |
731 | /* A .file is open. */ |
732 | int in_source_file = 0; | |
733 | int num_object_files = 0; | |
734 | int next_file_symnum = -1; | |
735 | ||
736 | /* Name of the current file. */ | |
737 | char *filestring = ""; | |
f70be3e4 JG |
738 | int depth = 0; |
739 | int fcn_first_line = 0; | |
740 | int fcn_last_line = 0; | |
741 | int fcn_start_addr = 0; | |
742 | long fcn_line_ptr = 0; | |
f70be3e4 | 743 | int val; |
bd5635a1 | 744 | |
de9bef49 | 745 | stream = bfd_cache_lookup(objfile->obfd); |
f70be3e4 JG |
746 | if (!stream) |
747 | perror_with_name(objfile->name); | |
bd5635a1 | 748 | |
f2c365f5 | 749 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
fc312cc6 JK |
750 | it's hard to know I've really worked around it. The fix should be |
751 | harmless, anyway). The symptom of the bug is that the first | |
752 | fread (in read_one_sym), will (in my example) actually get data | |
753 | from file offset 268, when the fseek was to 264 (and ftell shows | |
754 | 264). This causes all hell to break loose. I was unable to | |
755 | reproduce this on a short test program which operated on the same | |
756 | file, performing (I think) the same sequence of operations. | |
757 | ||
758 | It stopped happening when I put in this rewind(). | |
759 | ||
760 | FIXME: Find out if this has been reported to Sun, whether it has | |
761 | been fixed in a later release, etc. */ | |
762 | ||
f2c365f5 JK |
763 | rewind (stream); |
764 | ||
f70be3e4 JG |
765 | /* Position to read the symbol table. */ |
766 | val = fseek (stream, (long)symtab_offset, 0); | |
767 | if (val < 0) | |
768 | perror_with_name (objfile->name); | |
bd5635a1 | 769 | |
318bf84f | 770 | current_objfile = objfile; |
bd5635a1 RP |
771 | nlist_stream_global = stream; |
772 | nlist_nsyms_global = nsyms; | |
85f0a848 | 773 | last_source_file = NULL; |
4ed3a9ea | 774 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
bd5635a1 | 775 | |
cadbb07a | 776 | if (type_vector) /* Get rid of previous one */ |
f70be3e4 | 777 | free ((PTR)type_vector); |
bd5635a1 | 778 | type_vector_length = 160; |
159a075e SG |
779 | type_vector = (struct type **) |
780 | xmalloc (type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 781 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); |
bd5635a1 | 782 | |
318bf84f | 783 | coff_start_symtab (); |
bd5635a1 RP |
784 | |
785 | symnum = 0; | |
786 | while (symnum < nsyms) | |
787 | { | |
788 | QUIT; /* Make this command interruptable. */ | |
789 | read_one_sym (cs, &main_sym, &main_aux); | |
790 | ||
791 | #ifdef SEM | |
792 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
793 | cs->c_name[2] << 8 | cs->c_name[3]; | |
794 | if (int_sem_val == temp_sem_val) | |
795 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
796 | #endif | |
797 | ||
798 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
799 | { | |
800 | if (last_source_file) | |
318bf84f | 801 | coff_end_symtab (objfile); |
bd5635a1 | 802 | |
318bf84f | 803 | coff_start_symtab (); |
bd5635a1 RP |
804 | complete_symtab ("_globals_", 0, first_object_file_end); |
805 | /* done with all files, everything from here on out is globals */ | |
806 | } | |
807 | ||
808 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
809 | if (!last_source_file && SDB_TYPE (cs->c_type) |
810 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
811 | complete_symtab (filestring, 0, 0); |
812 | ||
813 | /* Typedefs should not be treated as symbol definitions. */ | |
814 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
815 | { | |
e09c5e26 | 816 | /* Record all functions -- external and static -- in minsyms. */ |
f70be3e4 | 817 | record_minimal_symbol (cs->c_name, cs->c_value, mst_text); |
bd5635a1 RP |
818 | |
819 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
820 | fcn_start_addr = cs->c_value; | |
821 | fcn_cs_saved = *cs; | |
822 | fcn_sym_saved = main_sym; | |
823 | fcn_aux_saved = main_aux; | |
824 | continue; | |
825 | } | |
826 | ||
827 | switch (cs->c_sclass) | |
828 | { | |
829 | case C_EFCN: | |
830 | case C_EXTDEF: | |
831 | case C_ULABEL: | |
832 | case C_USTATIC: | |
833 | case C_LINE: | |
834 | case C_ALIAS: | |
835 | case C_HIDDEN: | |
7e258d18 | 836 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
837 | break; |
838 | ||
839 | case C_FILE: | |
840 | /* | |
841 | * c_value field contains symnum of next .file entry in table | |
842 | * or symnum of first global after last .file. | |
843 | */ | |
844 | next_file_symnum = cs->c_value; | |
f0fcf00a SG |
845 | if (cs->c_naux > 0) |
846 | filestring = getfilename (&main_aux); | |
847 | else | |
848 | filestring = ""; | |
849 | ||
bd5635a1 RP |
850 | /* |
851 | * Complete symbol table for last object file | |
852 | * containing debugging information. | |
853 | */ | |
854 | if (last_source_file) | |
855 | { | |
318bf84f FF |
856 | coff_end_symtab (objfile); |
857 | coff_start_symtab (); | |
bd5635a1 RP |
858 | } |
859 | in_source_file = 1; | |
860 | break; | |
861 | ||
862 | case C_STAT: | |
863 | if (cs->c_name[0] == '.') { | |
c653bc6d | 864 | if (STREQ (cs->c_name, ".text")) { |
d8ce1326 JG |
865 | /* FIXME: don't wire in ".text" as section name |
866 | or symbol name! */ | |
bd5635a1 RP |
867 | if (++num_object_files == 1) { |
868 | /* last address of startup file */ | |
869 | first_object_file_end = cs->c_value + | |
870 | main_aux.x_scn.x_scnlen; | |
871 | } | |
872 | /* Check for in_source_file deals with case of | |
873 | a file with debugging symbols | |
874 | followed by a later file with no symbols. */ | |
875 | if (in_source_file) | |
876 | complete_symtab (filestring, cs->c_value, | |
877 | main_aux.x_scn.x_scnlen); | |
878 | in_source_file = 0; | |
879 | } | |
880 | /* flush rest of '.' symbols */ | |
881 | break; | |
882 | } | |
8714ff35 | 883 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
884 | && cs->c_name[0] == 'L' |
885 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 886 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
887 | || strncmp (cs->c_name,"LC%",3) == 0 |
888 | || strncmp (cs->c_name,"LP%",3) == 0 | |
889 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
890 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
891 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
892 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
893 | /* At least on a 3b1, gcc generates swbeg and string labels | |
894 | that look like this. Ignore them. */ | |
895 | break; | |
896 | /* fall in for static symbols that don't start with '.' */ | |
897 | case C_EXT: | |
e09c5e26 JK |
898 | /* Record external symbols in minsyms if we don't have debug |
899 | info for them. FIXME, this is probably the wrong thing | |
900 | to do. Why don't we record them even if we do have | |
901 | debug symbol info? What really belongs in the minsyms | |
902 | anyway? Fred!?? */ | |
8714ff35 | 903 | if (!SDB_TYPE (cs->c_type)) { |
d8ce1326 JG |
904 | /* FIXME: This is BOGUS Will Robinson! |
905 | Coff should provide the SEC_CODE flag for executable sections, | |
906 | then if we could look up sections by section number we | |
907 | could see if the flags indicate SEC_CODE. If so, then | |
318bf84f FF |
908 | record this symbol as a function in the minimal symbol table. |
909 | But why are absolute syms recorded as functions, anyway? */ | |
d8ce1326 | 910 | if (cs->c_secnum <= text_bfd_scnum+1) {/* text or abs */ |
f70be3e4 JG |
911 | record_minimal_symbol (cs->c_name, cs->c_value, |
912 | mst_text); | |
bd5635a1 RP |
913 | break; |
914 | } else { | |
f70be3e4 JG |
915 | record_minimal_symbol (cs->c_name, cs->c_value, |
916 | mst_data); | |
917 | break; | |
bd5635a1 RP |
918 | } |
919 | } | |
4ed3a9ea | 920 | process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
921 | break; |
922 | ||
923 | case C_FCN: | |
c653bc6d | 924 | if (STREQ (cs->c_name, ".bf")) |
bd5635a1 RP |
925 | { |
926 | within_function = 1; | |
927 | ||
928 | /* value contains address of first non-init type code */ | |
929 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
930 | contains line number of '{' } */ | |
e64fbb3a | 931 | if (cs->c_naux != 1) |
51b80b00 | 932 | complain (&bf_no_aux_complaint, cs->c_symnum); |
bd5635a1 RP |
933 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
934 | ||
c438b3af JK |
935 | /* Might want to check that locals are 0 and |
936 | context_stack_depth is zero, and complain if not. */ | |
937 | ||
938 | depth = 0; | |
939 | new = push_context (depth, fcn_start_addr); | |
bd5635a1 RP |
940 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
941 | new->name = process_coff_symbol (&fcn_cs_saved, | |
318bf84f | 942 | &fcn_aux_saved, objfile); |
bd5635a1 | 943 | } |
c653bc6d | 944 | else if (STREQ (cs->c_name, ".ef")) |
bd5635a1 | 945 | { |
c438b3af JK |
946 | /* the value of .ef is the address of epilogue code; |
947 | not useful for gdb. */ | |
bd5635a1 RP |
948 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
949 | contains number of lines to '}' */ | |
c438b3af JK |
950 | new = pop_context (); |
951 | /* Stack must be empty now. */ | |
952 | if (context_stack_depth > 0 || new == NULL) | |
bd5635a1 | 953 | { |
51b80b00 | 954 | complain (&ef_complaint, cs->c_symnum); |
bd5635a1 RP |
955 | within_function = 0; |
956 | break; | |
957 | } | |
c438b3af JK |
958 | if (cs->c_naux != 1) |
959 | { | |
960 | complain (&ef_no_aux_complaint, cs->c_symnum); | |
961 | fcn_last_line = 0x7FFFFFFF; | |
962 | } | |
963 | else | |
964 | { | |
965 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
966 | } | |
bd5635a1 RP |
967 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line); |
968 | ||
c438b3af | 969 | finish_block (new->name, &local_symbols, new->old_blocks, |
bd5635a1 RP |
970 | new->start_addr, |
971 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
972 | /* This macro should be defined only on | |
973 | machines where the | |
974 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
975 | field is always zero. | |
976 | So use the .bf record information that | |
977 | points to the epilogue and add the size | |
978 | of the epilogue. */ | |
318bf84f | 979 | cs->c_value + FUNCTION_EPILOGUE_SIZE, |
bd5635a1 RP |
980 | #else |
981 | fcn_cs_saved.c_value + | |
318bf84f | 982 | fcn_aux_saved.x_sym.x_misc.x_fsize, |
bd5635a1 | 983 | #endif |
318bf84f | 984 | objfile |
bd5635a1 | 985 | ); |
bd5635a1 | 986 | within_function = 0; |
bd5635a1 RP |
987 | } |
988 | break; | |
989 | ||
990 | case C_BLOCK: | |
c653bc6d | 991 | if (STREQ (cs->c_name, ".bb")) |
bd5635a1 | 992 | { |
c438b3af | 993 | push_context (++depth, cs->c_value); |
bd5635a1 | 994 | } |
c653bc6d | 995 | else if (STREQ (cs->c_name, ".eb")) |
bd5635a1 | 996 | { |
c438b3af JK |
997 | new = pop_context (); |
998 | if (depth-- != new->depth) | |
de9bef49 | 999 | { |
5573d7d4 | 1000 | complain (&eb_complaint, symnum); |
de9bef49 JG |
1001 | break; |
1002 | } | |
c438b3af | 1003 | if (local_symbols && context_stack_depth > 0) |
bd5635a1 RP |
1004 | { |
1005 | /* Make a block for the local symbols within. */ | |
c438b3af | 1006 | finish_block (0, &local_symbols, new->old_blocks, |
318bf84f | 1007 | new->start_addr, cs->c_value, objfile); |
bd5635a1 | 1008 | } |
c438b3af JK |
1009 | /* Now pop locals of block just finished. */ |
1010 | local_symbols = new->locals; | |
bd5635a1 RP |
1011 | } |
1012 | break; | |
bd5635a1 RP |
1013 | |
1014 | default: | |
4ed3a9ea | 1015 | process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1016 | break; |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (last_source_file) | |
318bf84f | 1021 | coff_end_symtab (objfile); |
f70be3e4 JG |
1022 | |
1023 | /* Patch up any opaque types (references to types that are not defined | |
1024 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1025 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1026 | patch_opaque_types (s); | |
1027 | ||
318bf84f | 1028 | current_objfile = NULL; |
bd5635a1 RP |
1029 | } |
1030 | \f | |
1031 | /* Routines for reading headers and symbols from executable. */ | |
1032 | ||
1033 | #ifdef FIXME | |
1034 | /* Move these XXXMAGIC symbol defns into BFD! */ | |
1035 | ||
1036 | /* Read COFF file header, check magic number, | |
1037 | and return number of symbols. */ | |
1038 | read_file_hdr (chan, file_hdr) | |
1039 | int chan; | |
1040 | FILHDR *file_hdr; | |
1041 | { | |
1042 | lseek (chan, 0L, 0); | |
1043 | if (myread (chan, (char *)file_hdr, FILHSZ) < 0) | |
1044 | return -1; | |
1045 | ||
1046 | switch (file_hdr->f_magic) | |
1047 | { | |
1048 | #ifdef MC68MAGIC | |
1049 | case MC68MAGIC: | |
1050 | #endif | |
1051 | #ifdef NS32GMAGIC | |
1052 | case NS32GMAGIC: | |
1053 | case NS32SMAGIC: | |
1054 | #endif | |
1055 | #ifdef I386MAGIC | |
1056 | case I386MAGIC: | |
1057 | #endif | |
1058 | #ifdef CLIPPERMAGIC | |
1059 | case CLIPPERMAGIC: | |
1060 | #endif | |
1061 | #if defined (MC68KWRMAGIC) \ | |
1062 | && (!defined (MC68MAGIC) || MC68KWRMAGIC != MC68MAGIC) | |
1063 | case MC68KWRMAGIC: | |
1064 | #endif | |
1065 | #ifdef MC68KROMAGIC | |
1066 | case MC68KROMAGIC: | |
1067 | case MC68KPGMAGIC: | |
1068 | #endif | |
1069 | #ifdef MC88DGMAGIC | |
1070 | case MC88DGMAGIC: | |
1071 | #endif | |
1072 | #ifdef MC88MAGIC | |
1073 | case MC88MAGIC: | |
1074 | #endif | |
1075 | #ifdef I960ROMAGIC | |
1076 | case I960ROMAGIC: /* Intel 960 */ | |
1077 | #endif | |
1078 | #ifdef I960RWMAGIC | |
1079 | case I960RWMAGIC: /* Intel 960 */ | |
1080 | #endif | |
1081 | return file_hdr->f_nsyms; | |
1082 | ||
1083 | default: | |
1084 | #ifdef BADMAG | |
1085 | if (BADMAG(file_hdr)) | |
1086 | return -1; | |
1087 | else | |
1088 | return file_hdr->f_nsyms; | |
1089 | #else | |
1090 | return -1; | |
1091 | #endif | |
1092 | } | |
1093 | } | |
1094 | #endif | |
1095 | ||
dcc35536 JG |
1096 | /* Read the next symbol, swap it, and return it in both internal_syment |
1097 | form, and coff_symbol form. Also return its first auxent, if any, | |
1098 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1099 | |
1100 | static void | |
1101 | read_one_sym (cs, sym, aux) | |
1102 | register struct coff_symbol *cs; | |
dcc35536 JG |
1103 | register struct internal_syment *sym; |
1104 | register union internal_auxent *aux; | |
bd5635a1 | 1105 | { |
bd5635a1 RP |
1106 | int i; |
1107 | ||
1108 | cs->c_symnum = symnum; | |
d8ce1326 JG |
1109 | fread (temp_sym, local_symesz, 1, nlist_stream_global); |
1110 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); | |
e64fbb3a JG |
1111 | cs->c_naux = sym->n_numaux & 0xff; |
1112 | if (cs->c_naux >= 1) | |
bd5635a1 | 1113 | { |
d8ce1326 JG |
1114 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
1115 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, | |
1116 | (char *)aux); | |
bd5635a1 RP |
1117 | /* If more than one aux entry, read past it (only the first aux |
1118 | is important). */ | |
e64fbb3a | 1119 | for (i = 1; i < cs->c_naux; i++) |
d8ce1326 | 1120 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
bd5635a1 RP |
1121 | } |
1122 | cs->c_name = getsymname (sym); | |
1123 | cs->c_value = sym->n_value; | |
1124 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1125 | cs->c_secnum = sym->n_scnum; | |
1126 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1127 | if (!SDB_TYPE (cs->c_type)) |
1128 | cs->c_type = 0; | |
bd5635a1 | 1129 | |
e64fbb3a | 1130 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1131 | } |
1132 | \f | |
1133 | /* Support for string table handling */ | |
1134 | ||
1135 | static char *stringtab = NULL; | |
1136 | ||
1137 | static int | |
1138 | init_stringtab (chan, offset) | |
1139 | int chan; | |
1140 | long offset; | |
1141 | { | |
1142 | long length; | |
1143 | int val; | |
1144 | unsigned char lengthbuf[4]; | |
1145 | ||
e09c5e26 | 1146 | free_stringtab (); |
bd5635a1 RP |
1147 | |
1148 | if (lseek (chan, offset, 0) < 0) | |
1149 | return -1; | |
1150 | ||
1151 | val = myread (chan, (char *)lengthbuf, sizeof lengthbuf); | |
dcc35536 | 1152 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1153 | |
1154 | /* If no string table is needed, then the file may end immediately | |
1155 | after the symbols. Just return with `stringtab' set to null. */ | |
e09c5e26 | 1156 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
bd5635a1 RP |
1157 | return 0; |
1158 | ||
1159 | stringtab = (char *) xmalloc (length); | |
4ed3a9ea | 1160 | memcpy (stringtab, &length, sizeof length); |
bd5635a1 RP |
1161 | if (length == sizeof length) /* Empty table -- just the count */ |
1162 | return 0; | |
1163 | ||
e09c5e26 JK |
1164 | val = myread (chan, stringtab + sizeof lengthbuf, length - sizeof lengthbuf); |
1165 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') | |
bd5635a1 RP |
1166 | return -1; |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | static void | |
1172 | free_stringtab () | |
1173 | { | |
1174 | if (stringtab) | |
1175 | free (stringtab); | |
1176 | stringtab = NULL; | |
1177 | } | |
1178 | ||
1179 | static char * | |
1180 | getsymname (symbol_entry) | |
dcc35536 | 1181 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1182 | { |
1183 | static char buffer[SYMNMLEN+1]; | |
1184 | char *result; | |
1185 | ||
dcc35536 | 1186 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1187 | { |
dcc35536 | 1188 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1189 | } |
1190 | else | |
1191 | { | |
dcc35536 | 1192 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1193 | buffer[SYMNMLEN] = '\0'; |
1194 | result = buffer; | |
1195 | } | |
1196 | return result; | |
1197 | } | |
1198 | ||
c653bc6d JG |
1199 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1200 | only the last component of the name. Result is in static storage and | |
1201 | is only good for temporary use. */ | |
1202 | ||
bd5635a1 RP |
1203 | static char * |
1204 | getfilename (aux_entry) | |
dcc35536 | 1205 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1206 | { |
1207 | static char buffer[BUFSIZ]; | |
1208 | register char *temp; | |
1209 | char *result; | |
bd5635a1 | 1210 | |
bd5635a1 RP |
1211 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1212 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1213 | else | |
bd5635a1 | 1214 | { |
bd5635a1 | 1215 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); |
bd5635a1 RP |
1216 | buffer[FILNMLEN] = '\0'; |
1217 | } | |
1218 | result = buffer; | |
318bf84f | 1219 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1220 | result = temp + 1; |
1221 | return (result); | |
1222 | } | |
1223 | \f | |
1224 | /* Support for line number handling */ | |
1225 | static char *linetab = NULL; | |
1226 | static long linetab_offset; | |
1227 | static unsigned long linetab_size; | |
1228 | ||
dcc35536 JG |
1229 | /* Read in all the line numbers for fast lookups later. Leave them in |
1230 | external (unswapped) format in memory; we'll swap them as we enter | |
1231 | them into GDB's data structures. */ | |
bd5635a1 RP |
1232 | |
1233 | static int | |
1234 | init_lineno (chan, offset, size) | |
1235 | int chan; | |
1236 | long offset; | |
1237 | int size; | |
1238 | { | |
1239 | int val; | |
bd5635a1 | 1240 | |
61a7292f SG |
1241 | linetab_offset = offset; |
1242 | linetab_size = size; | |
1243 | ||
e09c5e26 JK |
1244 | free_linetab(); |
1245 | ||
61a7292f SG |
1246 | if (size == 0) |
1247 | return 0; | |
1248 | ||
bd5635a1 RP |
1249 | if (lseek (chan, offset, 0) < 0) |
1250 | return -1; | |
1251 | ||
e64fbb3a JG |
1252 | /* Allocate the desired table, plus a sentinel */ |
1253 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 RP |
1254 | |
1255 | val = myread (chan, linetab, size); | |
1256 | if (val != size) | |
1257 | return -1; | |
1258 | ||
e64fbb3a | 1259 | /* Terminate it with an all-zero sentinel record */ |
4ed3a9ea | 1260 | memset (linetab + size, 0, local_linesz); |
e64fbb3a | 1261 | |
bd5635a1 RP |
1262 | return 0; |
1263 | } | |
1264 | ||
e09c5e26 JK |
1265 | static void |
1266 | free_linetab () | |
1267 | { | |
1268 | if (linetab) | |
1269 | free (linetab); | |
1270 | linetab = NULL; | |
1271 | } | |
1272 | ||
bd5635a1 RP |
1273 | #if !defined (L_LNNO32) |
1274 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1275 | #endif | |
1276 | ||
1277 | static void | |
1278 | enter_linenos (file_offset, first_line, last_line) | |
1279 | long file_offset; | |
1280 | register int first_line; | |
1281 | register int last_line; | |
1282 | { | |
1283 | register char *rawptr; | |
dcc35536 | 1284 | struct internal_lineno lptr; |
bd5635a1 RP |
1285 | |
1286 | if (file_offset < linetab_offset) | |
1287 | { | |
51b80b00 | 1288 | complain (&lineno_complaint, file_offset); |
63989338 JG |
1289 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1290 | return; | |
1291 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1292 | } |
1293 | ||
1294 | rawptr = &linetab[file_offset - linetab_offset]; | |
1295 | ||
1296 | /* skip first line entry for each function */ | |
d8ce1326 | 1297 | rawptr += local_linesz; |
bd5635a1 RP |
1298 | /* line numbers start at one for the first line of the function */ |
1299 | first_line--; | |
1300 | ||
dcc35536 | 1301 | for (;;) { |
d8ce1326 JG |
1302 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1303 | rawptr += local_linesz; | |
e64fbb3a | 1304 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1305 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
318bf84f | 1306 | coff_record_line (first_line + L_LNNO32 (&lptr), lptr.l_addr.l_paddr); |
dcc35536 JG |
1307 | else |
1308 | break; | |
1309 | } | |
bd5635a1 RP |
1310 | } |
1311 | \f | |
bd5635a1 RP |
1312 | static void |
1313 | patch_type (type, real_type) | |
1314 | struct type *type; | |
1315 | struct type *real_type; | |
1316 | { | |
1317 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1318 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1319 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1320 | ||
1321 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1322 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
85f0a848 | 1323 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); |
bd5635a1 | 1324 | |
4ed3a9ea | 1325 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); |
bd5635a1 RP |
1326 | |
1327 | if (TYPE_NAME (real_target)) | |
1328 | { | |
1329 | if (TYPE_NAME (target)) | |
1330 | free (TYPE_NAME (target)); | |
58ae87f6 | 1331 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1332 | } |
1333 | } | |
1334 | ||
7e258d18 | 1335 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
f70be3e4 | 1336 | so that they can be used to print out opaque data structures properly. */ |
bd5635a1 | 1337 | |
f70be3e4 JG |
1338 | static void |
1339 | patch_opaque_types (s) | |
318bf84f | 1340 | struct symtab *s; |
318bf84f FF |
1341 | { |
1342 | register struct block *b; | |
1343 | register int i; | |
1344 | register struct symbol *real_sym; | |
1345 | ||
1346 | /* Go through the per-file symbols only */ | |
1347 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1348 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1349 | { |
318bf84f FF |
1350 | /* Find completed typedefs to use to fix opaque ones. |
1351 | Remove syms from the chain when their types are stored, | |
1352 | but search the whole chain, as there may be several syms | |
1353 | from different files with the same name. */ | |
1354 | real_sym = BLOCK_SYM (b, i); | |
1355 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1356 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1357 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1358 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1359 | { |
318bf84f FF |
1360 | register char *name = SYMBOL_NAME (real_sym); |
1361 | register int hash = hashname (name); | |
1362 | register struct symbol *sym, *prev; | |
1363 | ||
1364 | prev = 0; | |
1365 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1366 | { |
318bf84f | 1367 | if (name[0] == SYMBOL_NAME (sym)[0] && |
c653bc6d | 1368 | STREQ (name + 1, SYMBOL_NAME (sym) + 1)) |
bd5635a1 | 1369 | { |
318bf84f | 1370 | if (prev) |
bd5635a1 | 1371 | { |
318bf84f | 1372 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1373 | } |
1374 | else | |
1375 | { | |
318bf84f | 1376 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1377 | } |
318bf84f FF |
1378 | |
1379 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1380 | ||
1381 | if (prev) | |
1382 | { | |
1383 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1384 | } | |
1385 | else | |
1386 | { | |
1387 | sym = opaque_type_chain[hash]; | |
1388 | } | |
1389 | } | |
1390 | else | |
1391 | { | |
1392 | prev = sym; | |
1393 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1394 | } |
1395 | } | |
1396 | } | |
1397 | } | |
1398 | } | |
1399 | \f | |
bd5635a1 | 1400 | static struct symbol * |
318bf84f | 1401 | process_coff_symbol (cs, aux, objfile) |
bd5635a1 | 1402 | register struct coff_symbol *cs; |
dcc35536 | 1403 | register union internal_auxent *aux; |
318bf84f | 1404 | struct objfile *objfile; |
bd5635a1 RP |
1405 | { |
1406 | register struct symbol *sym | |
c653bc6d JG |
1407 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, |
1408 | sizeof (struct symbol)); | |
bd5635a1 | 1409 | char *name; |
318bf84f | 1410 | struct type *temptype; |
bd5635a1 | 1411 | |
4ed3a9ea | 1412 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 1413 | name = cs->c_name; |
de9bef49 | 1414 | name = EXTERNAL_NAME (name, objfile->obfd); |
c653bc6d JG |
1415 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, |
1416 | strlen (name)); | |
bd5635a1 RP |
1417 | |
1418 | /* default assumptions */ | |
1419 | SYMBOL_VALUE (sym) = cs->c_value; | |
1420 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1421 | ||
1422 | if (ISFCN (cs->c_type)) | |
1423 | { | |
d8ce1326 JG |
1424 | #if 0 |
1425 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1426 | /* Generate a template for the type of this function. The | |
1427 | types of the arguments will be added as we read the symbol | |
1428 | table. */ | |
1429 | struct type *new = (struct type *) | |
318bf84f | 1430 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 | 1431 | |
4ed3a9ea | 1432 | memcpy (new, lookup_function_type (decode_function_type (cs, cs->c_type, aux)), |
51b57ded | 1433 | sizeof(struct type)); |
d8ce1326 JG |
1434 | SYMBOL_TYPE (sym) = new; |
1435 | in_function_type = SYMBOL_TYPE(sym); | |
1436 | #else | |
1437 | SYMBOL_TYPE(sym) = | |
1438 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1439 | #endif | |
1440 | ||
bd5635a1 RP |
1441 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1442 | if (cs->c_sclass == C_STAT) | |
c438b3af | 1443 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 | 1444 | else if (cs->c_sclass == C_EXT) |
c438b3af | 1445 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1446 | } |
1447 | else | |
1448 | { | |
1449 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1450 | switch (cs->c_sclass) | |
1451 | { | |
1452 | case C_NULL: | |
1453 | break; | |
1454 | ||
1455 | case C_AUTO: | |
1456 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
c438b3af | 1457 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1458 | break; |
1459 | ||
1460 | case C_EXT: | |
1461 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1462 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
c438b3af | 1463 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1464 | break; |
1465 | ||
1466 | case C_STAT: | |
1467 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1468 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
1469 | if (within_function) { | |
1470 | /* Static symbol of local scope */ | |
c438b3af | 1471 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1472 | } |
1473 | else { | |
1474 | /* Static symbol at top level of file */ | |
c438b3af | 1475 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1476 | } |
1477 | break; | |
1478 | ||
d8ce1326 JG |
1479 | #ifdef C_GLBLREG /* AMD coff */ |
1480 | case C_GLBLREG: | |
1481 | #endif | |
bd5635a1 RP |
1482 | case C_REG: |
1483 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1484 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1485 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1486 | break; |
1487 | ||
1488 | case C_LABEL: | |
1489 | break; | |
1490 | ||
1491 | case C_ARG: | |
1492 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1493 | #if 0 |
7e258d18 | 1494 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1495 | /* Add parameter to function. */ |
1496 | add_param_to_type(&in_function_type,sym); | |
1497 | #endif | |
c438b3af | 1498 | add_symbol_to_list (sym, &local_symbols); |
f2c365f5 | 1499 | #if !defined (BELIEVE_PCC_PROMOTION) && (TARGET_BYTE_ORDER == BIG_ENDIAN) |
bd5635a1 | 1500 | /* If PCC says a parameter is a short or a char, |
f2c365f5 JK |
1501 | aligned on an int boundary, realign it to the "little end" |
1502 | of the int. */ | |
318bf84f FF |
1503 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1504 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
f2c365f5 JK |
1505 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT |
1506 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
318bf84f | 1507 | { |
f2c365f5 JK |
1508 | SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype) |
1509 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
318bf84f | 1510 | } |
bd5635a1 RP |
1511 | #endif |
1512 | break; | |
1513 | ||
1514 | case C_REGPARM: | |
1515 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1516 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1517 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 | 1518 | #if !defined (BELIEVE_PCC_PROMOTION) |
f2c365f5 JK |
1519 | /* FIXME: This should retain the current type, since it's just |
1520 | a register value. gnu@adobe, 26Feb93 */ | |
bd5635a1 RP |
1521 | /* If PCC says a parameter is a short or a char, |
1522 | it is really an int. */ | |
318bf84f FF |
1523 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1524 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1525 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1526 | { | |
1527 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1528 | ? lookup_fundamental_type (current_objfile, | |
1529 | FT_UNSIGNED_INTEGER) | |
1530 | : temptype; | |
1531 | } | |
bd5635a1 RP |
1532 | #endif |
1533 | break; | |
1534 | ||
1535 | case C_TPDEF: | |
1536 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1537 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1538 | ||
1539 | /* If type has no name, give it one */ | |
318bf84f FF |
1540 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1541 | TYPE_NAME (SYMBOL_TYPE (sym)) = concat (SYMBOL_NAME (sym), NULL); | |
bd5635a1 RP |
1542 | |
1543 | /* Keep track of any type which points to empty structured type, | |
f70be3e4 JG |
1544 | so it can be filled from a definition from another file. A |
1545 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1546 | empty structured type, though; the forward references | |
1547 | work themselves out via the magic of coff_lookup_type. */ | |
bd5635a1 | 1548 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && |
f70be3e4 JG |
1549 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && |
1550 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1551 | TYPE_CODE_UNDEF) | |
bd5635a1 RP |
1552 | { |
1553 | register int i = hashname (SYMBOL_NAME (sym)); | |
1554 | ||
1555 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1556 | opaque_type_chain[i] = sym; | |
1557 | } | |
c438b3af | 1558 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1559 | break; |
1560 | ||
1561 | case C_STRTAG: | |
1562 | case C_UNTAG: | |
1563 | case C_ENTAG: | |
1564 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1565 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
e09c5e26 JK |
1566 | |
1567 | /* Some compilers try to be helpful by inventing "fake" | |
1568 | names for anonymous enums, structures, and unions, like | |
1569 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1570 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
1571 | if (SYMBOL_NAME(sym) != NULL | |
1572 | && *SYMBOL_NAME(sym) != '~' | |
1573 | && *SYMBOL_NAME(sym) != '.') | |
1574 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = | |
1575 | concat (SYMBOL_NAME (sym), NULL); | |
1576 | ||
c438b3af | 1577 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1578 | break; |
1579 | ||
1580 | default: | |
1581 | break; | |
1582 | } | |
1583 | } | |
1584 | return sym; | |
1585 | } | |
1586 | \f | |
1587 | /* Decode a coff type specifier; | |
1588 | return the type that is meant. */ | |
1589 | ||
1590 | static | |
1591 | struct type * | |
1592 | decode_type (cs, c_type, aux) | |
1593 | register struct coff_symbol *cs; | |
1594 | unsigned int c_type; | |
dcc35536 | 1595 | register union internal_auxent *aux; |
bd5635a1 RP |
1596 | { |
1597 | register struct type *type = 0; | |
1598 | unsigned int new_c_type; | |
1599 | ||
1600 | if (c_type & ~N_BTMASK) | |
1601 | { | |
1602 | new_c_type = DECREF (c_type); | |
1603 | if (ISPTR (c_type)) | |
1604 | { | |
1605 | type = decode_type (cs, new_c_type, aux); | |
1606 | type = lookup_pointer_type (type); | |
1607 | } | |
1608 | else if (ISFCN (c_type)) | |
1609 | { | |
1610 | type = decode_type (cs, new_c_type, aux); | |
1611 | type = lookup_function_type (type); | |
1612 | } | |
1613 | else if (ISARY (c_type)) | |
1614 | { | |
1615 | int i, n; | |
1616 | register unsigned short *dim; | |
a8a69e63 | 1617 | struct type *base_type, *index_type, *range_type; |
bd5635a1 RP |
1618 | |
1619 | /* Define an array type. */ | |
1620 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1621 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1622 | cs->c_naux = 0; |
bd5635a1 RP |
1623 | |
1624 | /* shift the indices down */ | |
1625 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1626 | i = 1; | |
1627 | n = dim[0]; | |
1628 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1629 | *dim = *(dim + 1); | |
1630 | *dim = 0; | |
1631 | ||
bd5635a1 | 1632 | base_type = decode_type (cs, new_c_type, aux); |
85f0a848 | 1633 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); |
a8a69e63 FF |
1634 | range_type = |
1635 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1636 | type = | |
1637 | create_array_type ((struct type *) NULL, base_type, range_type); | |
bd5635a1 RP |
1638 | } |
1639 | return type; | |
1640 | } | |
1641 | ||
f70be3e4 JG |
1642 | /* Reference to existing type. This only occurs with the |
1643 | struct, union, and enum types. EPI a29k coff | |
1644 | fakes us out by producing aux entries with a nonzero | |
1645 | x_tagndx for definitions of structs, unions, and enums, so we | |
117f631e ILT |
1646 | have to check the c_sclass field. SCO 3.2v4 cc gets confused |
1647 | with pointers to pointers to defined structs, and generates | |
1648 | negative x_tagndx fields. */ | |
e64fbb3a | 1649 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1650 | { |
117f631e ILT |
1651 | if (cs->c_sclass != C_STRTAG |
1652 | && cs->c_sclass != C_UNTAG | |
1653 | && cs->c_sclass != C_ENTAG | |
1654 | && aux->x_sym.x_tagndx.l >= 0) | |
f70be3e4 JG |
1655 | { |
1656 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1657 | return type; | |
1658 | } else { | |
1659 | complain (&tagndx_bad_complaint, cs->c_name); | |
1660 | /* And fall through to decode_base_type... */ | |
1661 | } | |
bd5635a1 RP |
1662 | } |
1663 | ||
1664 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1665 | } | |
1666 | ||
1667 | /* Decode a coff type specifier for function definition; | |
1668 | return the type that the function returns. */ | |
1669 | ||
1670 | static | |
1671 | struct type * | |
1672 | decode_function_type (cs, c_type, aux) | |
1673 | register struct coff_symbol *cs; | |
1674 | unsigned int c_type; | |
dcc35536 | 1675 | register union internal_auxent *aux; |
bd5635a1 | 1676 | { |
6988f5c0 | 1677 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1678 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1679 | |
1680 | return decode_type (cs, DECREF (c_type), aux); | |
1681 | } | |
1682 | \f | |
1683 | /* basic C types */ | |
1684 | ||
1685 | static | |
1686 | struct type * | |
1687 | decode_base_type (cs, c_type, aux) | |
1688 | register struct coff_symbol *cs; | |
1689 | unsigned int c_type; | |
dcc35536 | 1690 | register union internal_auxent *aux; |
bd5635a1 RP |
1691 | { |
1692 | struct type *type; | |
1693 | ||
1694 | switch (c_type) | |
1695 | { | |
1696 | case T_NULL: | |
1697 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1698 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1699 | |
8aa13b87 JK |
1700 | #if 0 |
1701 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1702 | #ifdef T_ARG |
1703 | case T_ARG: | |
1704 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1705 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1706 | #endif |
8aa13b87 | 1707 | #endif /* 0 */ |
bd5635a1 RP |
1708 | |
1709 | #ifdef T_VOID | |
1710 | case T_VOID: | |
1711 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1712 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1713 | #endif |
1714 | ||
1715 | case T_CHAR: | |
318bf84f | 1716 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1717 | |
1718 | case T_SHORT: | |
318bf84f | 1719 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1720 | |
1721 | case T_INT: | |
318bf84f | 1722 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1723 | |
1724 | case T_LONG: | |
318bf84f | 1725 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1726 | |
1727 | case T_FLOAT: | |
318bf84f | 1728 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1729 | |
1730 | case T_DOUBLE: | |
318bf84f | 1731 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1732 | |
1733 | case T_STRUCT: | |
e64fbb3a | 1734 | if (cs->c_naux != 1) |
bd5635a1 RP |
1735 | { |
1736 | /* anonymous structure type */ | |
1737 | type = coff_alloc_type (cs->c_symnum); | |
1738 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
e09c5e26 JK |
1739 | TYPE_NAME (type) = NULL; |
1740 | /* This used to set the tag to "<opaque>". But I think setting it | |
1741 | to NULL is right, and the printing code can print it as | |
1742 | "struct {...}". */ | |
1743 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1744 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1745 | TYPE_LENGTH (type) = 0; |
1746 | TYPE_FIELDS (type) = 0; | |
1747 | TYPE_NFIELDS (type) = 0; | |
1748 | } | |
1749 | else | |
1750 | { | |
318bf84f | 1751 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1752 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1753 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1754 | } |
1755 | return type; | |
1756 | ||
1757 | case T_UNION: | |
e64fbb3a | 1758 | if (cs->c_naux != 1) |
bd5635a1 RP |
1759 | { |
1760 | /* anonymous union type */ | |
1761 | type = coff_alloc_type (cs->c_symnum); | |
e09c5e26 JK |
1762 | TYPE_NAME (type) = NULL; |
1763 | /* This used to set the tag to "<opaque>". But I think setting it | |
1764 | to NULL is right, and the printing code can print it as | |
1765 | "union {...}". */ | |
1766 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1767 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1768 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1769 | TYPE_FIELDS (type) = 0; |
1770 | TYPE_NFIELDS (type) = 0; | |
1771 | } | |
1772 | else | |
1773 | { | |
318bf84f | 1774 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1775 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1776 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1777 | } |
1778 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1779 | return type; | |
1780 | ||
1781 | case T_ENUM: | |
e09c5e26 JK |
1782 | if (cs->c_naux != 1) |
1783 | { | |
1784 | /* anonymous enum type */ | |
1785 | type = coff_alloc_type (cs->c_symnum); | |
1786 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1787 | TYPE_NAME (type) = NULL; | |
1788 | /* This used to set the tag to "<opaque>". But I think setting it | |
1789 | to NULL is right, and the printing code can print it as | |
1790 | "enum {...}". */ | |
1791 | TYPE_TAG_NAME (type) = NULL; | |
1792 | TYPE_LENGTH (type) = 0; | |
1793 | TYPE_FIELDS (type) = 0; | |
1794 | TYPE_NFIELDS(type) = 0; | |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | type = coff_read_enum_type (cs->c_symnum, | |
1799 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1800 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1801 | } | |
1802 | return type; | |
bd5635a1 RP |
1803 | |
1804 | case T_MOE: | |
1805 | /* shouldn't show up here */ | |
1806 | break; | |
1807 | ||
1808 | case T_UCHAR: | |
318bf84f | 1809 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1810 | |
1811 | case T_USHORT: | |
318bf84f | 1812 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1813 | |
1814 | case T_UINT: | |
318bf84f | 1815 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1816 | |
1817 | case T_ULONG: | |
318bf84f | 1818 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1819 | } |
7e258d18 | 1820 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1821 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1822 | } |
1823 | \f | |
1824 | /* This page contains subroutines of read_type. */ | |
1825 | ||
1826 | /* Read the description of a structure (or union type) | |
1827 | and return an object describing the type. */ | |
1828 | ||
1829 | static struct type * | |
318bf84f | 1830 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1831 | int index; |
1832 | int length; | |
1833 | int lastsym; | |
1834 | { | |
1835 | struct nextfield | |
1836 | { | |
1837 | struct nextfield *next; | |
1838 | struct field field; | |
1839 | }; | |
1840 | ||
1841 | register struct type *type; | |
1842 | register struct nextfield *list = 0; | |
1843 | struct nextfield *new; | |
1844 | int nfields = 0; | |
1845 | register int n; | |
1846 | char *name; | |
bd5635a1 RP |
1847 | struct coff_symbol member_sym; |
1848 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1849 | struct internal_syment sub_sym; |
1850 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1851 | int done = 0; |
1852 | ||
1853 | type = coff_alloc_type (index); | |
1854 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1855 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1856 | TYPE_LENGTH (type) = length; |
1857 | ||
1858 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1859 | { | |
1860 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1861 | name = ms->c_name; | |
de9bef49 | 1862 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1863 | |
1864 | switch (ms->c_sclass) | |
1865 | { | |
1866 | case C_MOS: | |
1867 | case C_MOU: | |
1868 | ||
1869 | /* Get space to record the next field's data. */ | |
1870 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1871 | new->next = list; | |
1872 | list = new; | |
1873 | ||
1874 | /* Save the data. */ | |
1875 | list->field.name = savestring (name, strlen (name)); | |
1876 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1877 | list->field.bitpos = 8 * ms->c_value; | |
1878 | list->field.bitsize = 0; | |
1879 | nfields++; | |
1880 | break; | |
1881 | ||
1882 | case C_FIELD: | |
1883 | ||
1884 | /* Get space to record the next field's data. */ | |
1885 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1886 | new->next = list; | |
1887 | list = new; | |
1888 | ||
1889 | /* Save the data. */ | |
1890 | list->field.name = savestring (name, strlen (name)); | |
1891 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1892 | list->field.bitpos = ms->c_value; | |
1893 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
1894 | nfields++; | |
1895 | break; | |
1896 | ||
1897 | case C_EOS: | |
1898 | done = 1; | |
1899 | break; | |
1900 | } | |
1901 | } | |
1902 | /* Now create the vector of fields, and record how big it is. */ | |
1903 | ||
1904 | TYPE_NFIELDS (type) = nfields; | |
1905 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1906 | TYPE_ALLOC (type, sizeof (struct field) * nfields); |
bd5635a1 RP |
1907 | |
1908 | /* Copy the saved-up fields into the field vector. */ | |
1909 | ||
1910 | for (n = nfields; list; list = list->next) | |
1911 | TYPE_FIELD (type, --n) = list->field; | |
1912 | ||
1913 | return type; | |
1914 | } | |
1915 | \f | |
1916 | /* Read a definition of an enumeration type, | |
1917 | and create and return a suitable type object. | |
1918 | Also defines the symbols that represent the values of the type. */ | |
1919 | ||
61a7292f | 1920 | /* ARGSUSED */ |
bd5635a1 | 1921 | static struct type * |
318bf84f | 1922 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
1923 | int index; |
1924 | int length; | |
1925 | int lastsym; | |
1926 | { | |
1927 | register struct symbol *sym; | |
1928 | register struct type *type; | |
1929 | int nsyms = 0; | |
1930 | int done = 0; | |
c438b3af | 1931 | struct pending **symlist; |
bd5635a1 RP |
1932 | struct coff_symbol member_sym; |
1933 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1934 | struct internal_syment sub_sym; |
1935 | union internal_auxent sub_aux; | |
c438b3af JK |
1936 | struct pending *osyms, *syms; |
1937 | int o_nsyms; | |
bd5635a1 RP |
1938 | register int n; |
1939 | char *name; | |
bd5635a1 RP |
1940 | |
1941 | type = coff_alloc_type (index); | |
1942 | if (within_function) | |
c438b3af | 1943 | symlist = &local_symbols; |
bd5635a1 | 1944 | else |
c438b3af | 1945 | symlist = &file_symbols; |
bd5635a1 | 1946 | osyms = *symlist; |
c438b3af | 1947 | o_nsyms = osyms ? osyms->nsyms : 0; |
bd5635a1 RP |
1948 | |
1949 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1950 | { | |
1951 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1952 | name = ms->c_name; | |
de9bef49 | 1953 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1954 | |
1955 | switch (ms->c_sclass) | |
1956 | { | |
1957 | case C_MOE: | |
1958 | sym = (struct symbol *) xmalloc (sizeof (struct symbol)); | |
4ed3a9ea | 1959 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 RP |
1960 | |
1961 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); | |
1962 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1963 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1964 | SYMBOL_VALUE (sym) = ms->c_value; | |
c438b3af | 1965 | add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
1966 | nsyms++; |
1967 | break; | |
1968 | ||
1969 | case C_EOS: | |
1970 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
1971 | up the count of how many symbols to read. So stop | |
1972 | on .eos. */ | |
1973 | done = 1; | |
1974 | break; | |
1975 | } | |
1976 | } | |
1977 | ||
1978 | /* Now fill in the fields of the type-structure. */ | |
1979 | ||
f2c365f5 JK |
1980 | if (length > 0) |
1981 | TYPE_LENGTH (type) = length; | |
1982 | else | |
1983 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ | |
bd5635a1 RP |
1984 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
1985 | TYPE_NFIELDS (type) = nsyms; | |
1986 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1987 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); |
bd5635a1 RP |
1988 | |
1989 | /* Find the symbols for the values and put them into the type. | |
1990 | The symbols can be found in the symlist that we put them on | |
1991 | to cause them to be defined. osyms contains the old value | |
1992 | of that symlist; everything up to there was defined by us. */ | |
c438b3af JK |
1993 | /* Note that we preserve the order of the enum constants, so |
1994 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
1995 | FOO, not LAST_THING. */ | |
bd5635a1 | 1996 | |
c438b3af | 1997 | for (syms = *symlist, n = 0; syms; syms = syms->next) |
bd5635a1 | 1998 | { |
c438b3af JK |
1999 | int j = 0; |
2000 | if (syms == osyms) | |
2001 | j = o_nsyms; | |
2002 | for (; j < syms->nsyms; j++,n++) | |
2003 | { | |
2004 | struct symbol *xsym = syms->symbol[j]; | |
2005 | SYMBOL_TYPE (xsym) = type; | |
2006 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2007 | TYPE_FIELD_VALUE (type, n) = 0; | |
2008 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2009 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2010 | } | |
2011 | if (syms == osyms) | |
2012 | break; | |
bd5635a1 | 2013 | } |
c438b3af | 2014 | |
e09c5e26 JK |
2015 | #if 0 |
2016 | /* This screws up perfectly good C programs with enums. FIXME. */ | |
d8ce1326 JG |
2017 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ |
2018 | if(TYPE_NFIELDS(type) == 2 && | |
c653bc6d JG |
2019 | ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") && |
2020 | STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2021 | (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2022 | STREQ(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
d8ce1326 | 2023 | TYPE_CODE(type) = TYPE_CODE_BOOL; |
e09c5e26 | 2024 | #endif |
bd5635a1 RP |
2025 | return type; |
2026 | } | |
2027 | ||
85f0a848 FF |
2028 | struct section_offsets * |
2029 | coff_symfile_offsets (objfile, addr) | |
2030 | struct objfile *objfile; | |
2031 | CORE_ADDR addr; | |
2032 | { | |
b5b186a2 SS |
2033 | struct section_offsets *section_offsets; |
2034 | int i; | |
2035 | ||
2036 | section_offsets = (struct section_offsets *) | |
2037 | obstack_alloc (&objfile -> psymbol_obstack, | |
2038 | sizeof (struct section_offsets) + | |
2039 | sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2040 | ||
2041 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2042 | ANOFFSET (section_offsets, i) = addr; | |
2043 | ||
2044 | return section_offsets; | |
85f0a848 FF |
2045 | } |
2046 | ||
bd5635a1 RP |
2047 | /* Register our ability to parse symbols for coff BFD files */ |
2048 | ||
2049 | static struct sym_fns coff_sym_fns = | |
2050 | { | |
80d68b1d FF |
2051 | "coff", /* sym_name: name or name prefix of BFD target type */ |
2052 | 4, /* sym_namelen: number of significant sym_name chars */ | |
2053 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2054 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2055 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2056 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
85f0a848 | 2057 | coff_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
80d68b1d | 2058 | NULL /* next: pointer to next struct sym_fns */ |
bd5635a1 RP |
2059 | }; |
2060 | ||
2061 | void | |
2062 | _initialize_coffread () | |
2063 | { | |
2064 | add_symtab_fns(&coff_sym_fns); | |
2065 | } |