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