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" |
4d57c599 | 31 | #include "stabsread.h" |
51b80b00 | 32 | #include "complaints.h" |
bd5635a1 | 33 | #include <obstack.h> |
318bf84f | 34 | |
bd5635a1 RP |
35 | #include <string.h> |
36 | ||
fc773653 | 37 | #include <time.h> /* For time_t in libbfd.h. */ |
f0fcf00a | 38 | #include <sys/types.h> /* For time_t, if not in time.h. */ |
de9bef49 | 39 | #include "libbfd.h" /* FIXME secret internal data from BFD */ |
f5f0679a | 40 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
63989338 JG |
41 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
42 | ||
b5b186a2 | 43 | struct coff_symfile_info { |
8f6960c9 JK |
44 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ |
45 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
b5b186a2 SS |
46 | |
47 | asection *stabsect; /* Section pointer for .stab section */ | |
48 | asection *stabstrsect; /* Section pointer for .stab section */ | |
49 | asection *stabindexsect; /* Section pointer for .stab.index section */ | |
50 | char *stabstrdata; | |
b5b186a2 SS |
51 | }; |
52 | ||
de9bef49 JG |
53 | /* Translate an external name string into a user-visible name. */ |
54 | #define EXTERNAL_NAME(string, abfd) \ | |
55 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
56 | ||
8714ff35 JK |
57 | /* To be an sdb debug type, type must have at least a basic or primary |
58 | derived type. Using this rather than checking against T_NULL is | |
ab8f22a9 JK |
59 | said to prevent core dumps if we try to operate on Michael Bloom |
60 | dbx-in-coff file. */ | |
8714ff35 JK |
61 | |
62 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
63 | ||
d8ce1326 JG |
64 | /* |
65 | * Convert from an sdb register number to an internal gdb register number. | |
66 | * This should be defined in tm.h, if REGISTER_NAMES is not set up | |
67 | * to map one to one onto the sdb register numbers. | |
68 | */ | |
69 | #ifndef SDB_REG_TO_REGNUM | |
70 | # define SDB_REG_TO_REGNUM(value) (value) | |
71 | #endif | |
72 | ||
bd5635a1 RP |
73 | /* Core address of start and end of text of current source file. |
74 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
75 | ||
76 | static CORE_ADDR cur_src_start_addr; | |
77 | static CORE_ADDR cur_src_end_addr; | |
78 | ||
bd5635a1 RP |
79 | /* The addresses of the symbol table stream and number of symbols |
80 | of the object file we are reading (as copied into core). */ | |
81 | ||
af8b7906 | 82 | static GDB_FILE *nlist_stream_global; |
bd5635a1 RP |
83 | static int nlist_nsyms_global; |
84 | ||
bd5635a1 RP |
85 | /* Vector of line number information. */ |
86 | ||
87 | static struct linetable *line_vector; | |
88 | ||
89 | /* Index of next entry to go in line_vector_index. */ | |
90 | ||
91 | static int line_vector_index; | |
92 | ||
93 | /* Last line number recorded in the line vector. */ | |
94 | ||
95 | static int prev_line_number; | |
96 | ||
97 | /* Number of elements allocated for line_vector currently. */ | |
98 | ||
99 | static int line_vector_length; | |
100 | ||
d8ce1326 JG |
101 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
102 | ||
103 | static char *temp_sym; | |
104 | static char *temp_aux; | |
105 | ||
106 | /* Local variables that hold the shift and mask values for the | |
107 | COFF file that we are currently reading. These come back to us | |
108 | from BFD, and are referenced by their macro names, as well as | |
109 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
110 | macros from ../internalcoff.h . */ | |
111 | ||
112 | static unsigned local_n_btmask; | |
113 | static unsigned local_n_btshft; | |
114 | static unsigned local_n_tmask; | |
115 | static unsigned local_n_tshift; | |
116 | ||
117 | #define N_BTMASK local_n_btmask | |
118 | #define N_BTSHFT local_n_btshft | |
119 | #define N_TMASK local_n_tmask | |
120 | #define N_TSHIFT local_n_tshift | |
121 | ||
122 | /* Local variables that hold the sizes in the file of various COFF structures. | |
123 | (We only need to know this to read them from the file -- BFD will then | |
124 | translate the data in them, into `internal_xxx' structs in the right | |
125 | byte order, alignment, etc.) */ | |
126 | ||
127 | static unsigned local_linesz; | |
128 | static unsigned local_symesz; | |
129 | static unsigned local_auxesz; | |
130 | ||
131 | ||
bd5635a1 RP |
132 | /* Chain of typedefs of pointers to empty struct/union types. |
133 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
134 | ||
bd5635a1 RP |
135 | static struct symbol *opaque_type_chain[HASHSIZE]; |
136 | ||
d8ce1326 JG |
137 | #if 0 |
138 | /* The type of the function we are currently reading in. This is | |
139 | used by define_symbol to record the type of arguments to a function. */ | |
140 | ||
141 | struct type *in_function_type; | |
142 | #endif | |
143 | ||
bd5635a1 RP |
144 | struct pending_block *pending_blocks; |
145 | ||
bd5635a1 RP |
146 | /* Complaints about various problems in the file being read */ |
147 | ||
148 | struct complaint ef_complaint = | |
149 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
150 | ||
7e258d18 PB |
151 | struct complaint bf_no_aux_complaint = |
152 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
153 | ||
154 | struct complaint ef_no_aux_complaint = | |
155 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 156 | |
63989338 JG |
157 | struct complaint lineno_complaint = |
158 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
159 | ||
7e258d18 PB |
160 | struct complaint unexpected_type_complaint = |
161 | {"Unexpected type for symbol %s", 0, 0}; | |
162 | ||
163 | struct complaint bad_sclass_complaint = | |
164 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f | 165 | |
f70be3e4 JG |
166 | struct complaint misordered_blocks_complaint = |
167 | {"Blocks out of order at address %x", 0, 0}; | |
168 | ||
169 | struct complaint tagndx_bad_complaint = | |
170 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; | |
171 | ||
de9bef49 JG |
172 | struct complaint eb_complaint = |
173 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
174 | ||
318bf84f FF |
175 | /* Simplified internal version of coff symbol table information */ |
176 | ||
177 | struct coff_symbol { | |
178 | char *c_name; | |
179 | int c_symnum; /* symbol number of this entry */ | |
180 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
181 | long c_value; | |
182 | int c_sclass; | |
183 | int c_secnum; | |
184 | unsigned int c_type; | |
185 | }; | |
186 | ||
187 | static struct type * | |
188 | coff_read_struct_type PARAMS ((int, int, int)); | |
189 | ||
190 | static struct type * | |
191 | decode_base_type PARAMS ((struct coff_symbol *, unsigned int, | |
192 | union internal_auxent *)); | |
193 | ||
194 | static struct type * | |
195 | decode_type PARAMS ((struct coff_symbol *, unsigned int, | |
196 | union internal_auxent *)); | |
197 | ||
198 | static struct type * | |
199 | decode_function_type PARAMS ((struct coff_symbol *, unsigned int, | |
200 | union internal_auxent *)); | |
201 | ||
202 | static struct type * | |
203 | coff_read_enum_type PARAMS ((int, int, int)); | |
204 | ||
318bf84f FF |
205 | static struct symbol * |
206 | process_coff_symbol PARAMS ((struct coff_symbol *, union internal_auxent *, | |
207 | struct objfile *)); | |
208 | ||
f70be3e4 JG |
209 | static void |
210 | patch_opaque_types PARAMS ((struct symtab *)); | |
318bf84f FF |
211 | |
212 | static void | |
213 | patch_type PARAMS ((struct type *, struct type *)); | |
214 | ||
215 | static void | |
216 | enter_linenos PARAMS ((long, int, int)); | |
217 | ||
e09c5e26 JK |
218 | static void |
219 | free_linetab PARAMS ((void)); | |
220 | ||
318bf84f FF |
221 | static int |
222 | init_lineno PARAMS ((int, long, int)); | |
223 | ||
318bf84f FF |
224 | static char * |
225 | getsymname PARAMS ((struct internal_syment *)); | |
226 | ||
227 | static void | |
228 | free_stringtab PARAMS ((void)); | |
229 | ||
230 | static int | |
231 | init_stringtab PARAMS ((int, long)); | |
232 | ||
233 | static void | |
234 | read_one_sym PARAMS ((struct coff_symbol *, struct internal_syment *, | |
235 | union internal_auxent *)); | |
236 | ||
237 | static void | |
f70be3e4 | 238 | read_coff_symtab PARAMS ((long, int, struct objfile *)); |
318bf84f FF |
239 | |
240 | static void | |
80d68b1d | 241 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); |
318bf84f FF |
242 | |
243 | static void | |
80d68b1d | 244 | coff_symfile_init PARAMS ((struct objfile *)); |
318bf84f FF |
245 | |
246 | static void | |
80d68b1d | 247 | coff_new_init PARAMS ((struct objfile *)); |
318bf84f FF |
248 | |
249 | static void | |
85f0a848 | 250 | coff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
80d68b1d FF |
251 | |
252 | static void | |
253 | coff_symfile_finish PARAMS ((struct objfile *)); | |
318bf84f | 254 | |
af8b7906 JK |
255 | static void record_minimal_symbol |
256 | PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type, struct objfile *)); | |
318bf84f FF |
257 | |
258 | static void | |
259 | coff_end_symtab PARAMS ((struct objfile *)); | |
260 | ||
261 | static void | |
262 | complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); | |
263 | ||
264 | static void | |
265 | coff_start_symtab PARAMS ((void)); | |
266 | ||
267 | static void | |
268 | coff_record_line PARAMS ((int, CORE_ADDR)); | |
269 | ||
318bf84f FF |
270 | static struct type * |
271 | coff_alloc_type PARAMS ((int)); | |
272 | ||
273 | static struct type ** | |
274 | coff_lookup_type PARAMS ((int)); | |
275 | ||
bd5635a1 | 276 | \f |
b5b186a2 SS |
277 | static void |
278 | coff_locate_sections PARAMS ((bfd *, asection *, PTR)); | |
279 | ||
280 | /* We are called once per section from coff_symfile_read. We | |
281 | need to examine each section we are passed, check to see | |
282 | if it is something we are interested in processing, and | |
283 | if so, stash away some access information for the section. | |
284 | ||
0ccbaadc | 285 | FIXME: The section names should not be hardwired strings (what |
8f6960c9 JK |
286 | should they be? I don't think most object file formats have enough |
287 | section flags to specify what kind of debug section it is | |
288 | -kingdon). */ | |
b5b186a2 SS |
289 | |
290 | static void | |
291 | coff_locate_sections (ignore_abfd, sectp, csip) | |
292 | bfd *ignore_abfd; | |
293 | asection *sectp; | |
294 | PTR csip; | |
295 | { | |
296 | register struct coff_symfile_info *csi; | |
297 | ||
298 | csi = (struct coff_symfile_info *) csip; | |
299 | if (STREQ (sectp->name, ".stab")) | |
300 | { | |
301 | csi->stabsect = sectp; | |
302 | } | |
303 | else if (STREQ (sectp->name, ".stabstr")) | |
304 | { | |
305 | csi->stabstrsect = sectp; | |
306 | } | |
307 | else if (STREQ (sectp->name, ".stab.index")) | |
308 | { | |
309 | csi->stabindexsect = sectp; | |
310 | } | |
311 | } | |
312 | ||
bd5635a1 RP |
313 | /* Look up a coff type-number index. Return the address of the slot |
314 | where the type for that index is stored. | |
315 | The type-number is in INDEX. | |
316 | ||
317 | This can be used for finding the type associated with that index | |
318 | or for associating a new type with the index. */ | |
319 | ||
320 | static struct type ** | |
321 | coff_lookup_type (index) | |
322 | register int index; | |
323 | { | |
324 | if (index >= type_vector_length) | |
325 | { | |
326 | int old_vector_length = type_vector_length; | |
327 | ||
328 | type_vector_length *= 2; | |
f2c365f5 | 329 | if (index /* is still */ >= type_vector_length) { |
bd5635a1 RP |
330 | type_vector_length = index * 2; |
331 | } | |
159a075e | 332 | type_vector = (struct type **) |
318bf84f FF |
333 | xrealloc ((char *) type_vector, |
334 | type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 335 | memset (&type_vector[old_vector_length], 0, |
bd5635a1 RP |
336 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
337 | } | |
159a075e | 338 | return &type_vector[index]; |
bd5635a1 RP |
339 | } |
340 | ||
341 | /* Make sure there is a type allocated for type number index | |
342 | and return the type object. | |
343 | This can create an empty (zeroed) type object. */ | |
344 | ||
345 | static struct type * | |
346 | coff_alloc_type (index) | |
347 | int index; | |
348 | { | |
349 | register struct type **type_addr = coff_lookup_type (index); | |
350 | register struct type *type = *type_addr; | |
351 | ||
352 | /* If we are referring to a type not known at all yet, | |
353 | allocate an empty type for it. | |
354 | We will fill it in later if we find out how. */ | |
318bf84f | 355 | if (type == NULL) |
bd5635a1 | 356 | { |
318bf84f | 357 | type = alloc_type (current_objfile); |
bd5635a1 RP |
358 | *type_addr = type; |
359 | } | |
360 | return type; | |
361 | } | |
362 | \f | |
0ccbaadc JK |
363 | /* Record a line number entry for line LINE at address PC. |
364 | FIXME: Use record_line instead. */ | |
365 | ||
e1ce8aa5 | 366 | static void |
318bf84f | 367 | coff_record_line (line, pc) |
bd5635a1 RP |
368 | int line; |
369 | CORE_ADDR pc; | |
370 | { | |
371 | struct linetable_entry *e; | |
372 | /* Make sure line vector is big enough. */ | |
373 | ||
374 | if (line_vector_index + 2 >= line_vector_length) | |
375 | { | |
376 | line_vector_length *= 2; | |
377 | line_vector = (struct linetable *) | |
318bf84f | 378 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
379 | + (line_vector_length |
380 | * sizeof (struct linetable_entry))); | |
381 | } | |
382 | ||
383 | e = line_vector->item + line_vector_index++; | |
384 | e->line = line; e->pc = pc; | |
385 | } | |
386 | \f | |
387 | /* Start a new symtab for a new source file. | |
388 | This is called when a COFF ".file" symbol is seen; | |
389 | it indicates the start of data for one original source file. */ | |
390 | ||
391 | static void | |
318bf84f | 392 | coff_start_symtab () |
bd5635a1 | 393 | { |
c438b3af | 394 | start_symtab ( |
6b510f8f JK |
395 | /* We fill in the filename later. start_symtab |
396 | puts this pointer into last_source file and in | |
397 | coff_end_symtab we assume we can free() it. | |
3ffb74b9 JK |
398 | FIXME: leaks memory. */ |
399 | savestring ("", 0), | |
c438b3af JK |
400 | /* We never know the directory name for COFF. */ |
401 | NULL, | |
402 | /* The start address is irrelevant, since we set | |
403 | last_source_start_addr in coff_end_symtab. */ | |
404 | 0); | |
bd5635a1 | 405 | |
cadbb07a | 406 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 407 | |
cadbb07a | 408 | if (line_vector) /* Unlikely, but maybe possible? */ |
f70be3e4 | 409 | free ((PTR)line_vector); |
bd5635a1 RP |
410 | line_vector_index = 0; |
411 | line_vector_length = 1000; | |
412 | prev_line_number = -2; /* Force first line number to be explicit */ | |
413 | line_vector = (struct linetable *) | |
414 | xmalloc (sizeof (struct linetable) | |
415 | + line_vector_length * sizeof (struct linetable_entry)); | |
416 | } | |
417 | ||
418 | /* Save the vital information from when starting to read a file, | |
419 | for use when closing off the current file. | |
420 | NAME is the file name the symbols came from, START_ADDR is the first | |
421 | text address for the file, and SIZE is the number of bytes of text. */ | |
422 | ||
423 | static void | |
424 | complete_symtab (name, start_addr, size) | |
425 | char *name; | |
426 | CORE_ADDR start_addr; | |
427 | unsigned int size; | |
428 | { | |
429 | last_source_file = savestring (name, strlen (name)); | |
430 | cur_src_start_addr = start_addr; | |
431 | cur_src_end_addr = start_addr + size; | |
432 | ||
3624c875 FF |
433 | if (current_objfile -> ei.entry_point >= cur_src_start_addr && |
434 | current_objfile -> ei.entry_point < cur_src_end_addr) | |
bd5635a1 | 435 | { |
3624c875 FF |
436 | current_objfile -> ei.entry_file_lowpc = cur_src_start_addr; |
437 | current_objfile -> ei.entry_file_highpc = cur_src_end_addr; | |
bd5635a1 RP |
438 | } |
439 | } | |
440 | ||
441 | /* Finish the symbol definitions for one main source file, | |
442 | close off all the lexical contexts for that file | |
443 | (creating struct block's for them), then make the | |
444 | struct symtab for that file and put it in the list of all such. */ | |
445 | ||
446 | static void | |
318bf84f | 447 | coff_end_symtab (objfile) |
a048c8f5 | 448 | struct objfile *objfile; |
bd5635a1 | 449 | { |
c438b3af | 450 | struct symtab *symtab; |
bd5635a1 | 451 | |
c438b3af | 452 | last_source_start_addr = cur_src_start_addr; |
bd5635a1 | 453 | |
fc773653 JK |
454 | /* For no good reason, this file stores the number of entries in a |
455 | separate variable instead of in line_vector->nitems. Fix it. */ | |
456 | if (line_vector) | |
457 | line_vector->nitems = line_vector_index; | |
458 | ||
c438b3af JK |
459 | /* For COFF, we only have one subfile, so we can just look at |
460 | subfiles and not worry about there being other elements in the | |
461 | chain. We fill in various fields now because we didn't know them | |
462 | before (or because doing it now is simply an artifact of how this | |
463 | file used to be written). */ | |
464 | subfiles->line_vector = line_vector; | |
465 | subfiles->name = last_source_file; | |
bd5635a1 | 466 | |
c438b3af JK |
467 | /* sort_pending is needed for amdcoff, at least. |
468 | sort_linevec is needed for the SCO compiler. */ | |
469 | symtab = end_symtab (cur_src_end_addr, 1, 1, objfile, 0); | |
bd5635a1 | 470 | |
c438b3af JK |
471 | if (symtab != NULL) |
472 | free_named_symtabs (symtab->filename); | |
a6e2b424 | 473 | |
bd5635a1 RP |
474 | /* Reinitialize for beginning of new file. */ |
475 | line_vector = 0; | |
476 | line_vector_length = -1; | |
85f0a848 | 477 | last_source_file = NULL; |
bd5635a1 RP |
478 | } |
479 | \f | |
480 | static void | |
af8b7906 | 481 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
482 | char *name; |
483 | CORE_ADDR address; | |
f70be3e4 | 484 | enum minimal_symbol_type type; |
af8b7906 | 485 | struct objfile *objfile; |
bd5635a1 | 486 | { |
318bf84f | 487 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 488 | if (name[0] == '@') return; |
e140f1da | 489 | |
af8b7906 JK |
490 | prim_record_minimal_symbol (savestring (name, strlen (name)), address, type, |
491 | objfile); | |
bd5635a1 RP |
492 | } |
493 | \f | |
494 | /* coff_symfile_init () | |
495 | is the coff-specific initialization routine for reading symbols. | |
3624c875 | 496 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
497 | the BFD for the file whose symbols are being read, and a slot for |
498 | a pointer to "private data" which we fill with cookies and other | |
499 | treats for coff_symfile_read (). | |
500 | ||
501 | We will only be called if this is a COFF or COFF-like file. | |
502 | BFD handles figuring out the format of the file, and code in symtab.c | |
503 | uses BFD's determination to vector to us. | |
504 | ||
505 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
506 | ||
d8ce1326 JG |
507 | static int text_bfd_scnum; |
508 | ||
9bba3334 | 509 | static void |
80d68b1d FF |
510 | coff_symfile_init (objfile) |
511 | struct objfile *objfile; | |
bd5635a1 | 512 | { |
100f92e2 | 513 | asection *section; |
80d68b1d | 514 | bfd *abfd = objfile->obfd; |
bd5635a1 | 515 | |
8f6960c9 JK |
516 | /* Allocate struct to keep track of stab reading. */ |
517 | objfile->sym_stab_info = (PTR) | |
518 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); | |
519 | ||
520 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); | |
521 | ||
bd5635a1 | 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 | 591 | struct coff_symfile_info *info; |
8f6960c9 | 592 | struct dbx_symfile_info *dbxinfo; |
80d68b1d | 593 | bfd *abfd = objfile->obfd; |
d8ce1326 | 594 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 RP |
595 | char *name = bfd_get_filename (abfd); |
596 | int desc; | |
597 | register int val; | |
598 | int num_symbols; | |
599 | int symtab_offset; | |
600 | int stringtab_offset; | |
e09c5e26 | 601 | struct cleanup *back_to; |
b5b186a2 | 602 | int stabsize, stabstrsize; |
bd5635a1 | 603 | |
80d68b1d | 604 | info = (struct coff_symfile_info *) objfile -> sym_private; |
8f6960c9 | 605 | dbxinfo = (struct dbx_symfile_info *) objfile->sym_stab_info; |
bd5635a1 RP |
606 | symfile_bfd = abfd; /* Kludge for swap routines */ |
607 | ||
608 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
af8b7906 | 609 | desc = fileno ((GDB_FILE *)(abfd->iostream)); /* File descriptor */ |
bd5635a1 | 610 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
611 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
612 | stringtab_offset = symtab_offset + /* String table file offset */ | |
613 | num_symbols * cdata->local_symesz; | |
614 | ||
615 | /* Set a few file-statics that give us specific information about | |
616 | the particular COFF file format we're reading. */ | |
617 | local_linesz = cdata->local_linesz; | |
618 | local_n_btmask = cdata->local_n_btmask; | |
619 | local_n_btshft = cdata->local_n_btshft; | |
620 | local_n_tmask = cdata->local_n_tmask; | |
621 | local_n_tshift = cdata->local_n_tshift; | |
622 | local_linesz = cdata->local_linesz; | |
623 | local_symesz = cdata->local_symesz; | |
624 | local_auxesz = cdata->local_auxesz; | |
625 | ||
626 | /* Allocate space for raw symbol and aux entries, based on their | |
627 | space requirements as reported by BFD. */ | |
628 | temp_sym = (char *) xmalloc | |
629 | (cdata->local_symesz + cdata->local_auxesz); | |
630 | temp_aux = temp_sym + cdata->local_symesz; | |
e09c5e26 | 631 | back_to = make_cleanup (free_current_contents, &temp_sym); |
bd5635a1 RP |
632 | /* End of warning */ |
633 | ||
bd5635a1 RP |
634 | /* Read the line number table, all at once. */ |
635 | info->min_lineno_offset = 0; | |
636 | info->max_lineno_offset = 0; | |
b5b186a2 | 637 | bfd_map_over_sections (abfd, find_linenos, (PTR) info); |
bd5635a1 | 638 | |
e09c5e26 | 639 | make_cleanup (free_linetab, 0); |
bd5635a1 RP |
640 | val = init_lineno (desc, info->min_lineno_offset, |
641 | info->max_lineno_offset - info->min_lineno_offset); | |
642 | if (val < 0) | |
643 | error ("\"%s\": error reading line numbers\n", name); | |
644 | ||
645 | /* Now read the string table, all at once. */ | |
646 | ||
e09c5e26 | 647 | make_cleanup (free_stringtab, 0); |
bd5635a1 RP |
648 | val = init_stringtab (desc, stringtab_offset); |
649 | if (val < 0) | |
a048c8f5 | 650 | error ("\"%s\": can't get string table", name); |
bd5635a1 | 651 | |
318bf84f FF |
652 | init_minimal_symbol_collection (); |
653 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
654 | |
655 | /* Now that the executable file is positioned at symbol table, | |
656 | process it and define symbols accordingly. */ | |
657 | ||
f70be3e4 | 658 | read_coff_symtab ((long)symtab_offset, num_symbols, objfile); |
bd5635a1 RP |
659 | |
660 | /* Sort symbols alphabetically within each block. */ | |
661 | ||
9c38eb65 JK |
662 | { |
663 | struct symtab *s; | |
664 | for (s = objfile -> symtabs; s != NULL; s = s -> next) | |
665 | { | |
666 | sort_symtab_syms (s); | |
667 | } | |
668 | } | |
bd5635a1 | 669 | |
318bf84f FF |
670 | /* Install any minimal symbols that have been collected as the current |
671 | minimal symbols for this objfile. */ | |
bd5635a1 | 672 | |
80d68b1d | 673 | install_minimal_symbols (objfile); |
e09c5e26 | 674 | |
b5b186a2 SS |
675 | bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info); |
676 | ||
677 | if (info->stabsect) | |
678 | { | |
0ccbaadc JK |
679 | /* FIXME: dubious. Why can't we use something normal like |
680 | bfd_get_section_contents? */ | |
af8b7906 | 681 | fseek ((GDB_FILE *) abfd->iostream, abfd->where, 0); |
b5b186a2 SS |
682 | |
683 | stabsize = bfd_section_size (abfd, info->stabsect); | |
684 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
685 | ||
686 | coffstab_build_psymtabs (objfile, | |
687 | section_offsets, | |
688 | mainline, | |
689 | info->stabsect->filepos, stabsize, | |
690 | info->stabstrsect->filepos, stabstrsize); | |
691 | } | |
692 | ||
e09c5e26 | 693 | do_cleanups (back_to); |
bd5635a1 RP |
694 | } |
695 | ||
9bba3334 | 696 | static void |
f70be3e4 JG |
697 | coff_new_init (ignore) |
698 | struct objfile *ignore; | |
bd5635a1 | 699 | { |
bd5635a1 | 700 | } |
80d68b1d FF |
701 | |
702 | /* Perform any local cleanups required when we are done with a particular | |
703 | objfile. I.E, we are in the process of discarding all symbol information | |
704 | for an objfile, freeing up all memory held for it, and unlinking the | |
705 | objfile struct from the global list of known objfiles. */ | |
706 | ||
707 | static void | |
708 | coff_symfile_finish (objfile) | |
709 | struct objfile *objfile; | |
710 | { | |
711 | if (objfile -> sym_private != NULL) | |
712 | { | |
713 | mfree (objfile -> md, objfile -> sym_private); | |
714 | } | |
715 | } | |
716 | ||
bd5635a1 | 717 | \f |
bd5635a1 RP |
718 | /* Given pointers to a symbol table in coff style exec file, |
719 | analyze them and create struct symtab's describing the symbols. | |
720 | NSYMS is the number of symbols in the symbol table. | |
721 | We read them one at a time using read_one_sym (). */ | |
722 | ||
723 | static void | |
f70be3e4 JG |
724 | read_coff_symtab (symtab_offset, nsyms, objfile) |
725 | long symtab_offset; | |
bd5635a1 | 726 | int nsyms; |
a048c8f5 | 727 | struct objfile *objfile; |
bd5635a1 | 728 | { |
af8b7906 | 729 | GDB_FILE *stream; |
c438b3af | 730 | register struct context_stack *new; |
bd5635a1 RP |
731 | struct coff_symbol coff_symbol; |
732 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
733 | static struct internal_syment main_sym; |
734 | static union internal_auxent main_aux; | |
bd5635a1 | 735 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
736 | static struct internal_syment fcn_sym_saved; |
737 | static union internal_auxent fcn_aux_saved; | |
f70be3e4 JG |
738 | struct symtab *s; |
739 | ||
bd5635a1 RP |
740 | /* A .file is open. */ |
741 | int in_source_file = 0; | |
bd5635a1 RP |
742 | int next_file_symnum = -1; |
743 | ||
744 | /* Name of the current file. */ | |
745 | char *filestring = ""; | |
f70be3e4 JG |
746 | int depth = 0; |
747 | int fcn_first_line = 0; | |
748 | int fcn_last_line = 0; | |
749 | int fcn_start_addr = 0; | |
750 | long fcn_line_ptr = 0; | |
f70be3e4 | 751 | int val; |
bd5635a1 | 752 | |
de9bef49 | 753 | stream = bfd_cache_lookup(objfile->obfd); |
f70be3e4 JG |
754 | if (!stream) |
755 | perror_with_name(objfile->name); | |
bd5635a1 | 756 | |
f2c365f5 | 757 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
fc312cc6 JK |
758 | it's hard to know I've really worked around it. The fix should be |
759 | harmless, anyway). The symptom of the bug is that the first | |
760 | fread (in read_one_sym), will (in my example) actually get data | |
761 | from file offset 268, when the fseek was to 264 (and ftell shows | |
762 | 264). This causes all hell to break loose. I was unable to | |
763 | reproduce this on a short test program which operated on the same | |
764 | file, performing (I think) the same sequence of operations. | |
765 | ||
766 | It stopped happening when I put in this rewind(). | |
767 | ||
768 | FIXME: Find out if this has been reported to Sun, whether it has | |
769 | been fixed in a later release, etc. */ | |
770 | ||
f2c365f5 JK |
771 | rewind (stream); |
772 | ||
f70be3e4 JG |
773 | /* Position to read the symbol table. */ |
774 | val = fseek (stream, (long)symtab_offset, 0); | |
775 | if (val < 0) | |
776 | perror_with_name (objfile->name); | |
bd5635a1 | 777 | |
318bf84f | 778 | current_objfile = objfile; |
bd5635a1 RP |
779 | nlist_stream_global = stream; |
780 | nlist_nsyms_global = nsyms; | |
85f0a848 | 781 | last_source_file = NULL; |
4ed3a9ea | 782 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
bd5635a1 | 783 | |
cadbb07a | 784 | if (type_vector) /* Get rid of previous one */ |
f70be3e4 | 785 | free ((PTR)type_vector); |
bd5635a1 | 786 | type_vector_length = 160; |
159a075e SG |
787 | type_vector = (struct type **) |
788 | xmalloc (type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 789 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); |
bd5635a1 | 790 | |
318bf84f | 791 | coff_start_symtab (); |
bd5635a1 RP |
792 | |
793 | symnum = 0; | |
794 | while (symnum < nsyms) | |
795 | { | |
796 | QUIT; /* Make this command interruptable. */ | |
797 | read_one_sym (cs, &main_sym, &main_aux); | |
798 | ||
799 | #ifdef SEM | |
800 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
801 | cs->c_name[2] << 8 | cs->c_name[3]; | |
802 | if (int_sem_val == temp_sem_val) | |
803 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
804 | #endif | |
805 | ||
806 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
807 | { | |
808 | if (last_source_file) | |
318bf84f | 809 | coff_end_symtab (objfile); |
bd5635a1 | 810 | |
318bf84f | 811 | coff_start_symtab (); |
af8b7906 | 812 | complete_symtab ("_globals_", 0, 0); |
bd5635a1 RP |
813 | /* done with all files, everything from here on out is globals */ |
814 | } | |
815 | ||
816 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
817 | if (!last_source_file && SDB_TYPE (cs->c_type) |
818 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
819 | complete_symtab (filestring, 0, 0); |
820 | ||
821 | /* Typedefs should not be treated as symbol definitions. */ | |
822 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
823 | { | |
e09c5e26 | 824 | /* Record all functions -- external and static -- in minsyms. */ |
af8b7906 | 825 | record_minimal_symbol (cs->c_name, cs->c_value, mst_text, objfile); |
bd5635a1 RP |
826 | |
827 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
828 | fcn_start_addr = cs->c_value; | |
829 | fcn_cs_saved = *cs; | |
830 | fcn_sym_saved = main_sym; | |
831 | fcn_aux_saved = main_aux; | |
832 | continue; | |
833 | } | |
834 | ||
835 | switch (cs->c_sclass) | |
836 | { | |
837 | case C_EFCN: | |
838 | case C_EXTDEF: | |
839 | case C_ULABEL: | |
840 | case C_USTATIC: | |
841 | case C_LINE: | |
842 | case C_ALIAS: | |
843 | case C_HIDDEN: | |
7e258d18 | 844 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
845 | break; |
846 | ||
847 | case C_FILE: | |
848 | /* | |
849 | * c_value field contains symnum of next .file entry in table | |
850 | * or symnum of first global after last .file. | |
851 | */ | |
852 | next_file_symnum = cs->c_value; | |
f0fcf00a | 853 | if (cs->c_naux > 0) |
af8b7906 | 854 | filestring = coff_getfilename (&main_aux); |
f0fcf00a SG |
855 | else |
856 | filestring = ""; | |
857 | ||
bd5635a1 RP |
858 | /* |
859 | * Complete symbol table for last object file | |
860 | * containing debugging information. | |
861 | */ | |
862 | if (last_source_file) | |
863 | { | |
318bf84f FF |
864 | coff_end_symtab (objfile); |
865 | coff_start_symtab (); | |
bd5635a1 RP |
866 | } |
867 | in_source_file = 1; | |
868 | break; | |
869 | ||
870 | case C_STAT: | |
871 | if (cs->c_name[0] == '.') { | |
c653bc6d | 872 | if (STREQ (cs->c_name, ".text")) { |
d8ce1326 JG |
873 | /* FIXME: don't wire in ".text" as section name |
874 | or symbol name! */ | |
bd5635a1 RP |
875 | /* Check for in_source_file deals with case of |
876 | a file with debugging symbols | |
877 | followed by a later file with no symbols. */ | |
878 | if (in_source_file) | |
879 | complete_symtab (filestring, cs->c_value, | |
880 | main_aux.x_scn.x_scnlen); | |
881 | in_source_file = 0; | |
882 | } | |
883 | /* flush rest of '.' symbols */ | |
884 | break; | |
885 | } | |
8714ff35 | 886 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
887 | && cs->c_name[0] == 'L' |
888 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 889 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
890 | || strncmp (cs->c_name,"LC%",3) == 0 |
891 | || strncmp (cs->c_name,"LP%",3) == 0 | |
892 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
893 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
894 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
895 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
896 | /* At least on a 3b1, gcc generates swbeg and string labels | |
897 | that look like this. Ignore them. */ | |
898 | break; | |
899 | /* fall in for static symbols that don't start with '.' */ | |
900 | case C_EXT: | |
e09c5e26 JK |
901 | /* Record external symbols in minsyms if we don't have debug |
902 | info for them. FIXME, this is probably the wrong thing | |
903 | to do. Why don't we record them even if we do have | |
904 | debug symbol info? What really belongs in the minsyms | |
905 | anyway? Fred!?? */ | |
8714ff35 | 906 | if (!SDB_TYPE (cs->c_type)) { |
d8ce1326 JG |
907 | /* FIXME: This is BOGUS Will Robinson! |
908 | Coff should provide the SEC_CODE flag for executable sections, | |
909 | then if we could look up sections by section number we | |
910 | could see if the flags indicate SEC_CODE. If so, then | |
318bf84f FF |
911 | record this symbol as a function in the minimal symbol table. |
912 | But why are absolute syms recorded as functions, anyway? */ | |
d8ce1326 | 913 | if (cs->c_secnum <= text_bfd_scnum+1) {/* text or abs */ |
f70be3e4 | 914 | record_minimal_symbol (cs->c_name, cs->c_value, |
af8b7906 | 915 | mst_text, objfile); |
bd5635a1 RP |
916 | break; |
917 | } else { | |
f70be3e4 | 918 | record_minimal_symbol (cs->c_name, cs->c_value, |
af8b7906 | 919 | mst_data, objfile); |
f70be3e4 | 920 | break; |
bd5635a1 RP |
921 | } |
922 | } | |
4ed3a9ea | 923 | process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
924 | break; |
925 | ||
926 | case C_FCN: | |
c653bc6d | 927 | if (STREQ (cs->c_name, ".bf")) |
bd5635a1 RP |
928 | { |
929 | within_function = 1; | |
930 | ||
931 | /* value contains address of first non-init type code */ | |
932 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
933 | contains line number of '{' } */ | |
e64fbb3a | 934 | if (cs->c_naux != 1) |
51b80b00 | 935 | complain (&bf_no_aux_complaint, cs->c_symnum); |
bd5635a1 RP |
936 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
937 | ||
c438b3af JK |
938 | /* Might want to check that locals are 0 and |
939 | context_stack_depth is zero, and complain if not. */ | |
940 | ||
941 | depth = 0; | |
942 | new = push_context (depth, fcn_start_addr); | |
bd5635a1 RP |
943 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
944 | new->name = process_coff_symbol (&fcn_cs_saved, | |
318bf84f | 945 | &fcn_aux_saved, objfile); |
bd5635a1 | 946 | } |
c653bc6d | 947 | else if (STREQ (cs->c_name, ".ef")) |
bd5635a1 | 948 | { |
c438b3af JK |
949 | /* the value of .ef is the address of epilogue code; |
950 | not useful for gdb. */ | |
bd5635a1 RP |
951 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
952 | contains number of lines to '}' */ | |
c438b3af JK |
953 | new = pop_context (); |
954 | /* Stack must be empty now. */ | |
955 | if (context_stack_depth > 0 || new == NULL) | |
bd5635a1 | 956 | { |
51b80b00 | 957 | complain (&ef_complaint, cs->c_symnum); |
bd5635a1 RP |
958 | within_function = 0; |
959 | break; | |
960 | } | |
c438b3af JK |
961 | if (cs->c_naux != 1) |
962 | { | |
963 | complain (&ef_no_aux_complaint, cs->c_symnum); | |
964 | fcn_last_line = 0x7FFFFFFF; | |
965 | } | |
966 | else | |
967 | { | |
968 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
969 | } | |
bd5635a1 RP |
970 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line); |
971 | ||
c438b3af | 972 | finish_block (new->name, &local_symbols, new->old_blocks, |
bd5635a1 RP |
973 | new->start_addr, |
974 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
975 | /* This macro should be defined only on | |
976 | machines where the | |
977 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
978 | field is always zero. | |
979 | So use the .bf record information that | |
980 | points to the epilogue and add the size | |
981 | of the epilogue. */ | |
318bf84f | 982 | cs->c_value + FUNCTION_EPILOGUE_SIZE, |
bd5635a1 RP |
983 | #else |
984 | fcn_cs_saved.c_value + | |
318bf84f | 985 | fcn_aux_saved.x_sym.x_misc.x_fsize, |
bd5635a1 | 986 | #endif |
318bf84f | 987 | objfile |
bd5635a1 | 988 | ); |
bd5635a1 | 989 | within_function = 0; |
bd5635a1 RP |
990 | } |
991 | break; | |
992 | ||
993 | case C_BLOCK: | |
c653bc6d | 994 | if (STREQ (cs->c_name, ".bb")) |
bd5635a1 | 995 | { |
c438b3af | 996 | push_context (++depth, cs->c_value); |
bd5635a1 | 997 | } |
c653bc6d | 998 | else if (STREQ (cs->c_name, ".eb")) |
bd5635a1 | 999 | { |
c438b3af JK |
1000 | new = pop_context (); |
1001 | if (depth-- != new->depth) | |
de9bef49 | 1002 | { |
5573d7d4 | 1003 | complain (&eb_complaint, symnum); |
de9bef49 JG |
1004 | break; |
1005 | } | |
c438b3af | 1006 | if (local_symbols && context_stack_depth > 0) |
bd5635a1 RP |
1007 | { |
1008 | /* Make a block for the local symbols within. */ | |
c438b3af | 1009 | finish_block (0, &local_symbols, new->old_blocks, |
318bf84f | 1010 | new->start_addr, cs->c_value, objfile); |
bd5635a1 | 1011 | } |
c438b3af JK |
1012 | /* Now pop locals of block just finished. */ |
1013 | local_symbols = new->locals; | |
bd5635a1 RP |
1014 | } |
1015 | break; | |
bd5635a1 RP |
1016 | |
1017 | default: | |
4ed3a9ea | 1018 | process_coff_symbol (cs, &main_aux, objfile); |
bd5635a1 RP |
1019 | break; |
1020 | } | |
1021 | } | |
1022 | ||
1023 | if (last_source_file) | |
318bf84f | 1024 | coff_end_symtab (objfile); |
f70be3e4 JG |
1025 | |
1026 | /* Patch up any opaque types (references to types that are not defined | |
1027 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1028 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1029 | patch_opaque_types (s); | |
1030 | ||
318bf84f | 1031 | current_objfile = NULL; |
bd5635a1 RP |
1032 | } |
1033 | \f | |
1034 | /* Routines for reading headers and symbols from executable. */ | |
1035 | ||
1036 | #ifdef FIXME | |
1037 | /* Move these XXXMAGIC symbol defns into BFD! */ | |
1038 | ||
1039 | /* Read COFF file header, check magic number, | |
1040 | and return number of symbols. */ | |
1041 | read_file_hdr (chan, file_hdr) | |
1042 | int chan; | |
1043 | FILHDR *file_hdr; | |
1044 | { | |
1045 | lseek (chan, 0L, 0); | |
1046 | if (myread (chan, (char *)file_hdr, FILHSZ) < 0) | |
1047 | return -1; | |
1048 | ||
1049 | switch (file_hdr->f_magic) | |
1050 | { | |
1051 | #ifdef MC68MAGIC | |
1052 | case MC68MAGIC: | |
1053 | #endif | |
1054 | #ifdef NS32GMAGIC | |
1055 | case NS32GMAGIC: | |
1056 | case NS32SMAGIC: | |
1057 | #endif | |
1058 | #ifdef I386MAGIC | |
1059 | case I386MAGIC: | |
1060 | #endif | |
1061 | #ifdef CLIPPERMAGIC | |
1062 | case CLIPPERMAGIC: | |
1063 | #endif | |
1064 | #if defined (MC68KWRMAGIC) \ | |
1065 | && (!defined (MC68MAGIC) || MC68KWRMAGIC != MC68MAGIC) | |
1066 | case MC68KWRMAGIC: | |
1067 | #endif | |
1068 | #ifdef MC68KROMAGIC | |
1069 | case MC68KROMAGIC: | |
1070 | case MC68KPGMAGIC: | |
1071 | #endif | |
1072 | #ifdef MC88DGMAGIC | |
1073 | case MC88DGMAGIC: | |
1074 | #endif | |
1075 | #ifdef MC88MAGIC | |
1076 | case MC88MAGIC: | |
1077 | #endif | |
1078 | #ifdef I960ROMAGIC | |
1079 | case I960ROMAGIC: /* Intel 960 */ | |
1080 | #endif | |
1081 | #ifdef I960RWMAGIC | |
1082 | case I960RWMAGIC: /* Intel 960 */ | |
1083 | #endif | |
1084 | return file_hdr->f_nsyms; | |
1085 | ||
1086 | default: | |
1087 | #ifdef BADMAG | |
1088 | if (BADMAG(file_hdr)) | |
1089 | return -1; | |
1090 | else | |
1091 | return file_hdr->f_nsyms; | |
1092 | #else | |
1093 | return -1; | |
1094 | #endif | |
1095 | } | |
1096 | } | |
1097 | #endif | |
1098 | ||
dcc35536 JG |
1099 | /* Read the next symbol, swap it, and return it in both internal_syment |
1100 | form, and coff_symbol form. Also return its first auxent, if any, | |
1101 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1102 | |
1103 | static void | |
1104 | read_one_sym (cs, sym, aux) | |
1105 | register struct coff_symbol *cs; | |
dcc35536 JG |
1106 | register struct internal_syment *sym; |
1107 | register union internal_auxent *aux; | |
bd5635a1 | 1108 | { |
bd5635a1 RP |
1109 | int i; |
1110 | ||
1111 | cs->c_symnum = symnum; | |
d8ce1326 JG |
1112 | fread (temp_sym, local_symesz, 1, nlist_stream_global); |
1113 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); | |
e64fbb3a JG |
1114 | cs->c_naux = sym->n_numaux & 0xff; |
1115 | if (cs->c_naux >= 1) | |
bd5635a1 | 1116 | { |
d8ce1326 JG |
1117 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
1118 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, | |
1119 | (char *)aux); | |
bd5635a1 RP |
1120 | /* If more than one aux entry, read past it (only the first aux |
1121 | is important). */ | |
e64fbb3a | 1122 | for (i = 1; i < cs->c_naux; i++) |
d8ce1326 | 1123 | fread (temp_aux, local_auxesz, 1, nlist_stream_global); |
bd5635a1 RP |
1124 | } |
1125 | cs->c_name = getsymname (sym); | |
1126 | cs->c_value = sym->n_value; | |
1127 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1128 | cs->c_secnum = sym->n_scnum; | |
1129 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1130 | if (!SDB_TYPE (cs->c_type)) |
1131 | cs->c_type = 0; | |
bd5635a1 | 1132 | |
e64fbb3a | 1133 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1134 | } |
1135 | \f | |
1136 | /* Support for string table handling */ | |
1137 | ||
1138 | static char *stringtab = NULL; | |
1139 | ||
1140 | static int | |
1141 | init_stringtab (chan, offset) | |
1142 | int chan; | |
1143 | long offset; | |
1144 | { | |
1145 | long length; | |
1146 | int val; | |
1147 | unsigned char lengthbuf[4]; | |
1148 | ||
e09c5e26 | 1149 | free_stringtab (); |
bd5635a1 RP |
1150 | |
1151 | if (lseek (chan, offset, 0) < 0) | |
1152 | return -1; | |
1153 | ||
1154 | val = myread (chan, (char *)lengthbuf, sizeof lengthbuf); | |
dcc35536 | 1155 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1156 | |
1157 | /* If no string table is needed, then the file may end immediately | |
1158 | after the symbols. Just return with `stringtab' set to null. */ | |
e09c5e26 | 1159 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
bd5635a1 RP |
1160 | return 0; |
1161 | ||
1162 | stringtab = (char *) xmalloc (length); | |
4ed3a9ea | 1163 | memcpy (stringtab, &length, sizeof length); |
bd5635a1 RP |
1164 | if (length == sizeof length) /* Empty table -- just the count */ |
1165 | return 0; | |
1166 | ||
e09c5e26 JK |
1167 | val = myread (chan, stringtab + sizeof lengthbuf, length - sizeof lengthbuf); |
1168 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') | |
bd5635a1 RP |
1169 | return -1; |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | static void | |
1175 | free_stringtab () | |
1176 | { | |
1177 | if (stringtab) | |
1178 | free (stringtab); | |
1179 | stringtab = NULL; | |
1180 | } | |
1181 | ||
1182 | static char * | |
1183 | getsymname (symbol_entry) | |
dcc35536 | 1184 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1185 | { |
1186 | static char buffer[SYMNMLEN+1]; | |
1187 | char *result; | |
1188 | ||
dcc35536 | 1189 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1190 | { |
dcc35536 | 1191 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1192 | } |
1193 | else | |
1194 | { | |
dcc35536 | 1195 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1196 | buffer[SYMNMLEN] = '\0'; |
1197 | result = buffer; | |
1198 | } | |
1199 | return result; | |
1200 | } | |
1201 | ||
c653bc6d JG |
1202 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1203 | only the last component of the name. Result is in static storage and | |
1204 | is only good for temporary use. */ | |
1205 | ||
bd5635a1 | 1206 | static char * |
af8b7906 | 1207 | coff_getfilename (aux_entry) |
dcc35536 | 1208 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1209 | { |
1210 | static char buffer[BUFSIZ]; | |
1211 | register char *temp; | |
1212 | char *result; | |
bd5635a1 | 1213 | |
bd5635a1 RP |
1214 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1215 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1216 | else | |
bd5635a1 | 1217 | { |
bd5635a1 | 1218 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); |
bd5635a1 RP |
1219 | buffer[FILNMLEN] = '\0'; |
1220 | } | |
1221 | result = buffer; | |
318bf84f | 1222 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1223 | result = temp + 1; |
1224 | return (result); | |
1225 | } | |
1226 | \f | |
1227 | /* Support for line number handling */ | |
1228 | static char *linetab = NULL; | |
1229 | static long linetab_offset; | |
1230 | static unsigned long linetab_size; | |
1231 | ||
dcc35536 JG |
1232 | /* Read in all the line numbers for fast lookups later. Leave them in |
1233 | external (unswapped) format in memory; we'll swap them as we enter | |
1234 | them into GDB's data structures. */ | |
bd5635a1 RP |
1235 | |
1236 | static int | |
1237 | init_lineno (chan, offset, size) | |
1238 | int chan; | |
1239 | long offset; | |
1240 | int size; | |
1241 | { | |
1242 | int val; | |
bd5635a1 | 1243 | |
61a7292f SG |
1244 | linetab_offset = offset; |
1245 | linetab_size = size; | |
1246 | ||
e09c5e26 JK |
1247 | free_linetab(); |
1248 | ||
61a7292f SG |
1249 | if (size == 0) |
1250 | return 0; | |
1251 | ||
bd5635a1 RP |
1252 | if (lseek (chan, offset, 0) < 0) |
1253 | return -1; | |
1254 | ||
e64fbb3a JG |
1255 | /* Allocate the desired table, plus a sentinel */ |
1256 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 RP |
1257 | |
1258 | val = myread (chan, linetab, size); | |
1259 | if (val != size) | |
1260 | return -1; | |
1261 | ||
e64fbb3a | 1262 | /* Terminate it with an all-zero sentinel record */ |
4ed3a9ea | 1263 | memset (linetab + size, 0, local_linesz); |
e64fbb3a | 1264 | |
bd5635a1 RP |
1265 | return 0; |
1266 | } | |
1267 | ||
e09c5e26 JK |
1268 | static void |
1269 | free_linetab () | |
1270 | { | |
1271 | if (linetab) | |
1272 | free (linetab); | |
1273 | linetab = NULL; | |
1274 | } | |
1275 | ||
bd5635a1 RP |
1276 | #if !defined (L_LNNO32) |
1277 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1278 | #endif | |
1279 | ||
1280 | static void | |
1281 | enter_linenos (file_offset, first_line, last_line) | |
1282 | long file_offset; | |
1283 | register int first_line; | |
1284 | register int last_line; | |
1285 | { | |
1286 | register char *rawptr; | |
dcc35536 | 1287 | struct internal_lineno lptr; |
bd5635a1 RP |
1288 | |
1289 | if (file_offset < linetab_offset) | |
1290 | { | |
51b80b00 | 1291 | complain (&lineno_complaint, file_offset); |
63989338 JG |
1292 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1293 | return; | |
1294 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1295 | } |
1296 | ||
1297 | rawptr = &linetab[file_offset - linetab_offset]; | |
1298 | ||
1299 | /* skip first line entry for each function */ | |
d8ce1326 | 1300 | rawptr += local_linesz; |
bd5635a1 RP |
1301 | /* line numbers start at one for the first line of the function */ |
1302 | first_line--; | |
1303 | ||
dcc35536 | 1304 | for (;;) { |
d8ce1326 JG |
1305 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1306 | rawptr += local_linesz; | |
e64fbb3a | 1307 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1308 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
318bf84f | 1309 | coff_record_line (first_line + L_LNNO32 (&lptr), lptr.l_addr.l_paddr); |
dcc35536 JG |
1310 | else |
1311 | break; | |
1312 | } | |
bd5635a1 RP |
1313 | } |
1314 | \f | |
bd5635a1 RP |
1315 | static void |
1316 | patch_type (type, real_type) | |
1317 | struct type *type; | |
1318 | struct type *real_type; | |
1319 | { | |
1320 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1321 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1322 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1323 | ||
1324 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1325 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
85f0a848 | 1326 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); |
bd5635a1 | 1327 | |
4ed3a9ea | 1328 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); |
bd5635a1 RP |
1329 | |
1330 | if (TYPE_NAME (real_target)) | |
1331 | { | |
1332 | if (TYPE_NAME (target)) | |
1333 | free (TYPE_NAME (target)); | |
58ae87f6 | 1334 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1335 | } |
1336 | } | |
1337 | ||
7e258d18 | 1338 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
f70be3e4 | 1339 | so that they can be used to print out opaque data structures properly. */ |
bd5635a1 | 1340 | |
f70be3e4 JG |
1341 | static void |
1342 | patch_opaque_types (s) | |
318bf84f | 1343 | struct symtab *s; |
318bf84f FF |
1344 | { |
1345 | register struct block *b; | |
1346 | register int i; | |
1347 | register struct symbol *real_sym; | |
1348 | ||
1349 | /* Go through the per-file symbols only */ | |
1350 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1351 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1352 | { |
318bf84f FF |
1353 | /* Find completed typedefs to use to fix opaque ones. |
1354 | Remove syms from the chain when their types are stored, | |
1355 | but search the whole chain, as there may be several syms | |
1356 | from different files with the same name. */ | |
1357 | real_sym = BLOCK_SYM (b, i); | |
1358 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1359 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1360 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1361 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1362 | { |
318bf84f FF |
1363 | register char *name = SYMBOL_NAME (real_sym); |
1364 | register int hash = hashname (name); | |
1365 | register struct symbol *sym, *prev; | |
1366 | ||
1367 | prev = 0; | |
1368 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1369 | { |
318bf84f | 1370 | if (name[0] == SYMBOL_NAME (sym)[0] && |
c653bc6d | 1371 | STREQ (name + 1, SYMBOL_NAME (sym) + 1)) |
bd5635a1 | 1372 | { |
318bf84f | 1373 | if (prev) |
bd5635a1 | 1374 | { |
318bf84f | 1375 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1376 | } |
1377 | else | |
1378 | { | |
318bf84f | 1379 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1380 | } |
318bf84f FF |
1381 | |
1382 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1383 | ||
1384 | if (prev) | |
1385 | { | |
1386 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1387 | } | |
1388 | else | |
1389 | { | |
1390 | sym = opaque_type_chain[hash]; | |
1391 | } | |
1392 | } | |
1393 | else | |
1394 | { | |
1395 | prev = sym; | |
1396 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1397 | } |
1398 | } | |
1399 | } | |
1400 | } | |
1401 | } | |
1402 | \f | |
bd5635a1 | 1403 | static struct symbol * |
318bf84f | 1404 | process_coff_symbol (cs, aux, objfile) |
bd5635a1 | 1405 | register struct coff_symbol *cs; |
dcc35536 | 1406 | register union internal_auxent *aux; |
318bf84f | 1407 | struct objfile *objfile; |
bd5635a1 RP |
1408 | { |
1409 | register struct symbol *sym | |
c653bc6d JG |
1410 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, |
1411 | sizeof (struct symbol)); | |
bd5635a1 | 1412 | char *name; |
318bf84f | 1413 | struct type *temptype; |
bd5635a1 | 1414 | |
4ed3a9ea | 1415 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 1416 | name = cs->c_name; |
de9bef49 | 1417 | name = EXTERNAL_NAME (name, objfile->obfd); |
c653bc6d JG |
1418 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, |
1419 | strlen (name)); | |
bd5635a1 RP |
1420 | |
1421 | /* default assumptions */ | |
1422 | SYMBOL_VALUE (sym) = cs->c_value; | |
1423 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1424 | ||
1425 | if (ISFCN (cs->c_type)) | |
1426 | { | |
d8ce1326 JG |
1427 | #if 0 |
1428 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1429 | /* Generate a template for the type of this function. The | |
1430 | types of the arguments will be added as we read the symbol | |
1431 | table. */ | |
1432 | struct type *new = (struct type *) | |
318bf84f | 1433 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 | 1434 | |
4ed3a9ea | 1435 | memcpy (new, lookup_function_type (decode_function_type (cs, cs->c_type, aux)), |
51b57ded | 1436 | sizeof(struct type)); |
d8ce1326 JG |
1437 | SYMBOL_TYPE (sym) = new; |
1438 | in_function_type = SYMBOL_TYPE(sym); | |
1439 | #else | |
1440 | SYMBOL_TYPE(sym) = | |
1441 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1442 | #endif | |
1443 | ||
bd5635a1 RP |
1444 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1445 | if (cs->c_sclass == C_STAT) | |
c438b3af | 1446 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 | 1447 | else if (cs->c_sclass == C_EXT) |
c438b3af | 1448 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1449 | } |
1450 | else | |
1451 | { | |
1452 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1453 | switch (cs->c_sclass) | |
1454 | { | |
1455 | case C_NULL: | |
1456 | break; | |
1457 | ||
1458 | case C_AUTO: | |
1459 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
c438b3af | 1460 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1461 | break; |
1462 | ||
1463 | case C_EXT: | |
1464 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1465 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
c438b3af | 1466 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1467 | break; |
1468 | ||
1469 | case C_STAT: | |
1470 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1471 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
1472 | if (within_function) { | |
1473 | /* Static symbol of local scope */ | |
c438b3af | 1474 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1475 | } |
1476 | else { | |
1477 | /* Static symbol at top level of file */ | |
c438b3af | 1478 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1479 | } |
1480 | break; | |
1481 | ||
d8ce1326 JG |
1482 | #ifdef C_GLBLREG /* AMD coff */ |
1483 | case C_GLBLREG: | |
1484 | #endif | |
bd5635a1 RP |
1485 | case C_REG: |
1486 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1487 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1488 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1489 | break; |
1490 | ||
1491 | case C_LABEL: | |
1492 | break; | |
1493 | ||
1494 | case C_ARG: | |
1495 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1496 | #if 0 |
7e258d18 | 1497 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1498 | /* Add parameter to function. */ |
1499 | add_param_to_type(&in_function_type,sym); | |
1500 | #endif | |
c438b3af | 1501 | add_symbol_to_list (sym, &local_symbols); |
f2c365f5 | 1502 | #if !defined (BELIEVE_PCC_PROMOTION) && (TARGET_BYTE_ORDER == BIG_ENDIAN) |
bd5635a1 | 1503 | /* If PCC says a parameter is a short or a char, |
f2c365f5 JK |
1504 | aligned on an int boundary, realign it to the "little end" |
1505 | of the int. */ | |
318bf84f FF |
1506 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1507 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
f2c365f5 JK |
1508 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT |
1509 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
318bf84f | 1510 | { |
f2c365f5 JK |
1511 | SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype) |
1512 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
318bf84f | 1513 | } |
bd5635a1 RP |
1514 | #endif |
1515 | break; | |
1516 | ||
1517 | case C_REGPARM: | |
1518 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1519 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1520 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 | 1521 | #if !defined (BELIEVE_PCC_PROMOTION) |
f2c365f5 JK |
1522 | /* FIXME: This should retain the current type, since it's just |
1523 | a register value. gnu@adobe, 26Feb93 */ | |
bd5635a1 RP |
1524 | /* If PCC says a parameter is a short or a char, |
1525 | it is really an int. */ | |
318bf84f FF |
1526 | temptype = lookup_fundamental_type (current_objfile, FT_INTEGER); |
1527 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1528 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1529 | { | |
1530 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1531 | ? lookup_fundamental_type (current_objfile, | |
1532 | FT_UNSIGNED_INTEGER) | |
1533 | : temptype; | |
1534 | } | |
bd5635a1 RP |
1535 | #endif |
1536 | break; | |
1537 | ||
1538 | case C_TPDEF: | |
1539 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1540 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1541 | ||
1542 | /* If type has no name, give it one */ | |
318bf84f FF |
1543 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1544 | TYPE_NAME (SYMBOL_TYPE (sym)) = concat (SYMBOL_NAME (sym), NULL); | |
bd5635a1 RP |
1545 | |
1546 | /* Keep track of any type which points to empty structured type, | |
f70be3e4 JG |
1547 | so it can be filled from a definition from another file. A |
1548 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1549 | empty structured type, though; the forward references | |
1550 | work themselves out via the magic of coff_lookup_type. */ | |
bd5635a1 | 1551 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && |
f70be3e4 JG |
1552 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && |
1553 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1554 | TYPE_CODE_UNDEF) | |
bd5635a1 RP |
1555 | { |
1556 | register int i = hashname (SYMBOL_NAME (sym)); | |
1557 | ||
1558 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1559 | opaque_type_chain[i] = sym; | |
1560 | } | |
c438b3af | 1561 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1562 | break; |
1563 | ||
1564 | case C_STRTAG: | |
1565 | case C_UNTAG: | |
1566 | case C_ENTAG: | |
1567 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1568 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
e09c5e26 JK |
1569 | |
1570 | /* Some compilers try to be helpful by inventing "fake" | |
1571 | names for anonymous enums, structures, and unions, like | |
1572 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1573 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
1574 | if (SYMBOL_NAME(sym) != NULL | |
1575 | && *SYMBOL_NAME(sym) != '~' | |
1576 | && *SYMBOL_NAME(sym) != '.') | |
1577 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = | |
1578 | concat (SYMBOL_NAME (sym), NULL); | |
1579 | ||
c438b3af | 1580 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1581 | break; |
1582 | ||
1583 | default: | |
1584 | break; | |
1585 | } | |
1586 | } | |
1587 | return sym; | |
1588 | } | |
1589 | \f | |
1590 | /* Decode a coff type specifier; | |
1591 | return the type that is meant. */ | |
1592 | ||
1593 | static | |
1594 | struct type * | |
1595 | decode_type (cs, c_type, aux) | |
1596 | register struct coff_symbol *cs; | |
1597 | unsigned int c_type; | |
dcc35536 | 1598 | register union internal_auxent *aux; |
bd5635a1 RP |
1599 | { |
1600 | register struct type *type = 0; | |
1601 | unsigned int new_c_type; | |
1602 | ||
1603 | if (c_type & ~N_BTMASK) | |
1604 | { | |
1605 | new_c_type = DECREF (c_type); | |
1606 | if (ISPTR (c_type)) | |
1607 | { | |
1608 | type = decode_type (cs, new_c_type, aux); | |
1609 | type = lookup_pointer_type (type); | |
1610 | } | |
1611 | else if (ISFCN (c_type)) | |
1612 | { | |
1613 | type = decode_type (cs, new_c_type, aux); | |
1614 | type = lookup_function_type (type); | |
1615 | } | |
1616 | else if (ISARY (c_type)) | |
1617 | { | |
1618 | int i, n; | |
1619 | register unsigned short *dim; | |
a8a69e63 | 1620 | struct type *base_type, *index_type, *range_type; |
bd5635a1 RP |
1621 | |
1622 | /* Define an array type. */ | |
1623 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1624 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1625 | cs->c_naux = 0; |
bd5635a1 RP |
1626 | |
1627 | /* shift the indices down */ | |
1628 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1629 | i = 1; | |
1630 | n = dim[0]; | |
1631 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1632 | *dim = *(dim + 1); | |
1633 | *dim = 0; | |
1634 | ||
bd5635a1 | 1635 | base_type = decode_type (cs, new_c_type, aux); |
85f0a848 | 1636 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); |
a8a69e63 FF |
1637 | range_type = |
1638 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1639 | type = | |
1640 | create_array_type ((struct type *) NULL, base_type, range_type); | |
bd5635a1 RP |
1641 | } |
1642 | return type; | |
1643 | } | |
1644 | ||
f70be3e4 JG |
1645 | /* Reference to existing type. This only occurs with the |
1646 | struct, union, and enum types. EPI a29k coff | |
1647 | fakes us out by producing aux entries with a nonzero | |
1648 | x_tagndx for definitions of structs, unions, and enums, so we | |
117f631e ILT |
1649 | have to check the c_sclass field. SCO 3.2v4 cc gets confused |
1650 | with pointers to pointers to defined structs, and generates | |
1651 | negative x_tagndx fields. */ | |
e64fbb3a | 1652 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1653 | { |
117f631e ILT |
1654 | if (cs->c_sclass != C_STRTAG |
1655 | && cs->c_sclass != C_UNTAG | |
1656 | && cs->c_sclass != C_ENTAG | |
1657 | && aux->x_sym.x_tagndx.l >= 0) | |
f70be3e4 JG |
1658 | { |
1659 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1660 | return type; | |
1661 | } else { | |
1662 | complain (&tagndx_bad_complaint, cs->c_name); | |
1663 | /* And fall through to decode_base_type... */ | |
1664 | } | |
bd5635a1 RP |
1665 | } |
1666 | ||
1667 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1668 | } | |
1669 | ||
1670 | /* Decode a coff type specifier for function definition; | |
1671 | return the type that the function returns. */ | |
1672 | ||
1673 | static | |
1674 | struct type * | |
1675 | decode_function_type (cs, c_type, aux) | |
1676 | register struct coff_symbol *cs; | |
1677 | unsigned int c_type; | |
dcc35536 | 1678 | register union internal_auxent *aux; |
bd5635a1 | 1679 | { |
6988f5c0 | 1680 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1681 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1682 | |
1683 | return decode_type (cs, DECREF (c_type), aux); | |
1684 | } | |
1685 | \f | |
1686 | /* basic C types */ | |
1687 | ||
1688 | static | |
1689 | struct type * | |
1690 | decode_base_type (cs, c_type, aux) | |
1691 | register struct coff_symbol *cs; | |
1692 | unsigned int c_type; | |
dcc35536 | 1693 | register union internal_auxent *aux; |
bd5635a1 RP |
1694 | { |
1695 | struct type *type; | |
1696 | ||
1697 | switch (c_type) | |
1698 | { | |
1699 | case T_NULL: | |
1700 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1701 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1702 | |
8aa13b87 JK |
1703 | #if 0 |
1704 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1705 | #ifdef T_ARG |
1706 | case T_ARG: | |
1707 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1708 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1709 | #endif |
8aa13b87 | 1710 | #endif /* 0 */ |
bd5635a1 RP |
1711 | |
1712 | #ifdef T_VOID | |
1713 | case T_VOID: | |
1714 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1715 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1716 | #endif |
1717 | ||
1718 | case T_CHAR: | |
318bf84f | 1719 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1720 | |
1721 | case T_SHORT: | |
318bf84f | 1722 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1723 | |
1724 | case T_INT: | |
318bf84f | 1725 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1726 | |
1727 | case T_LONG: | |
318bf84f | 1728 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1729 | |
1730 | case T_FLOAT: | |
318bf84f | 1731 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1732 | |
1733 | case T_DOUBLE: | |
318bf84f | 1734 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1735 | |
1736 | case T_STRUCT: | |
e64fbb3a | 1737 | if (cs->c_naux != 1) |
bd5635a1 RP |
1738 | { |
1739 | /* anonymous structure type */ | |
1740 | type = coff_alloc_type (cs->c_symnum); | |
1741 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
e09c5e26 JK |
1742 | TYPE_NAME (type) = NULL; |
1743 | /* This used to set the tag to "<opaque>". But I think setting it | |
1744 | to NULL is right, and the printing code can print it as | |
1745 | "struct {...}". */ | |
1746 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1747 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1748 | TYPE_LENGTH (type) = 0; |
1749 | TYPE_FIELDS (type) = 0; | |
1750 | TYPE_NFIELDS (type) = 0; | |
1751 | } | |
1752 | else | |
1753 | { | |
318bf84f | 1754 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1755 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1756 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1757 | } |
1758 | return type; | |
1759 | ||
1760 | case T_UNION: | |
e64fbb3a | 1761 | if (cs->c_naux != 1) |
bd5635a1 RP |
1762 | { |
1763 | /* anonymous union type */ | |
1764 | type = coff_alloc_type (cs->c_symnum); | |
e09c5e26 JK |
1765 | TYPE_NAME (type) = NULL; |
1766 | /* This used to set the tag to "<opaque>". But I think setting it | |
1767 | to NULL is right, and the printing code can print it as | |
1768 | "union {...}". */ | |
1769 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1770 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1771 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1772 | TYPE_FIELDS (type) = 0; |
1773 | TYPE_NFIELDS (type) = 0; | |
1774 | } | |
1775 | else | |
1776 | { | |
318bf84f | 1777 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1778 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1779 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1780 | } |
1781 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1782 | return type; | |
1783 | ||
1784 | case T_ENUM: | |
e09c5e26 JK |
1785 | if (cs->c_naux != 1) |
1786 | { | |
1787 | /* anonymous enum type */ | |
1788 | type = coff_alloc_type (cs->c_symnum); | |
1789 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1790 | TYPE_NAME (type) = NULL; | |
1791 | /* This used to set the tag to "<opaque>". But I think setting it | |
1792 | to NULL is right, and the printing code can print it as | |
1793 | "enum {...}". */ | |
1794 | TYPE_TAG_NAME (type) = NULL; | |
1795 | TYPE_LENGTH (type) = 0; | |
1796 | TYPE_FIELDS (type) = 0; | |
1797 | TYPE_NFIELDS(type) = 0; | |
1798 | } | |
1799 | else | |
1800 | { | |
1801 | type = coff_read_enum_type (cs->c_symnum, | |
1802 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1803 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1804 | } | |
1805 | return type; | |
bd5635a1 RP |
1806 | |
1807 | case T_MOE: | |
1808 | /* shouldn't show up here */ | |
1809 | break; | |
1810 | ||
1811 | case T_UCHAR: | |
318bf84f | 1812 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1813 | |
1814 | case T_USHORT: | |
318bf84f | 1815 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1816 | |
1817 | case T_UINT: | |
318bf84f | 1818 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1819 | |
1820 | case T_ULONG: | |
318bf84f | 1821 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1822 | } |
7e258d18 | 1823 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1824 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1825 | } |
1826 | \f | |
1827 | /* This page contains subroutines of read_type. */ | |
1828 | ||
1829 | /* Read the description of a structure (or union type) | |
1830 | and return an object describing the type. */ | |
1831 | ||
1832 | static struct type * | |
318bf84f | 1833 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1834 | int index; |
1835 | int length; | |
1836 | int lastsym; | |
1837 | { | |
1838 | struct nextfield | |
1839 | { | |
1840 | struct nextfield *next; | |
1841 | struct field field; | |
1842 | }; | |
1843 | ||
1844 | register struct type *type; | |
1845 | register struct nextfield *list = 0; | |
1846 | struct nextfield *new; | |
1847 | int nfields = 0; | |
1848 | register int n; | |
1849 | char *name; | |
bd5635a1 RP |
1850 | struct coff_symbol member_sym; |
1851 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1852 | struct internal_syment sub_sym; |
1853 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1854 | int done = 0; |
1855 | ||
1856 | type = coff_alloc_type (index); | |
1857 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1858 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1859 | TYPE_LENGTH (type) = length; |
1860 | ||
1861 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1862 | { | |
1863 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1864 | name = ms->c_name; | |
de9bef49 | 1865 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1866 | |
1867 | switch (ms->c_sclass) | |
1868 | { | |
1869 | case C_MOS: | |
1870 | case C_MOU: | |
1871 | ||
1872 | /* Get space to record the next field's data. */ | |
1873 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1874 | new->next = list; | |
1875 | list = new; | |
1876 | ||
1877 | /* Save the data. */ | |
1878 | list->field.name = savestring (name, strlen (name)); | |
1879 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1880 | list->field.bitpos = 8 * ms->c_value; | |
1881 | list->field.bitsize = 0; | |
1882 | nfields++; | |
1883 | break; | |
1884 | ||
1885 | case C_FIELD: | |
1886 | ||
1887 | /* Get space to record the next field's data. */ | |
1888 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1889 | new->next = list; | |
1890 | list = new; | |
1891 | ||
1892 | /* Save the data. */ | |
1893 | list->field.name = savestring (name, strlen (name)); | |
1894 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); | |
1895 | list->field.bitpos = ms->c_value; | |
1896 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
1897 | nfields++; | |
1898 | break; | |
1899 | ||
1900 | case C_EOS: | |
1901 | done = 1; | |
1902 | break; | |
1903 | } | |
1904 | } | |
1905 | /* Now create the vector of fields, and record how big it is. */ | |
1906 | ||
1907 | TYPE_NFIELDS (type) = nfields; | |
1908 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1909 | TYPE_ALLOC (type, sizeof (struct field) * nfields); |
bd5635a1 RP |
1910 | |
1911 | /* Copy the saved-up fields into the field vector. */ | |
1912 | ||
1913 | for (n = nfields; list; list = list->next) | |
1914 | TYPE_FIELD (type, --n) = list->field; | |
1915 | ||
1916 | return type; | |
1917 | } | |
1918 | \f | |
1919 | /* Read a definition of an enumeration type, | |
1920 | and create and return a suitable type object. | |
1921 | Also defines the symbols that represent the values of the type. */ | |
1922 | ||
61a7292f | 1923 | /* ARGSUSED */ |
bd5635a1 | 1924 | static struct type * |
318bf84f | 1925 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
1926 | int index; |
1927 | int length; | |
1928 | int lastsym; | |
1929 | { | |
1930 | register struct symbol *sym; | |
1931 | register struct type *type; | |
1932 | int nsyms = 0; | |
1933 | int done = 0; | |
c438b3af | 1934 | struct pending **symlist; |
bd5635a1 RP |
1935 | struct coff_symbol member_sym; |
1936 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1937 | struct internal_syment sub_sym; |
1938 | union internal_auxent sub_aux; | |
c438b3af JK |
1939 | struct pending *osyms, *syms; |
1940 | int o_nsyms; | |
bd5635a1 RP |
1941 | register int n; |
1942 | char *name; | |
bd5635a1 RP |
1943 | |
1944 | type = coff_alloc_type (index); | |
1945 | if (within_function) | |
c438b3af | 1946 | symlist = &local_symbols; |
bd5635a1 | 1947 | else |
c438b3af | 1948 | symlist = &file_symbols; |
bd5635a1 | 1949 | osyms = *symlist; |
c438b3af | 1950 | o_nsyms = osyms ? osyms->nsyms : 0; |
bd5635a1 RP |
1951 | |
1952 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1953 | { | |
1954 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1955 | name = ms->c_name; | |
de9bef49 | 1956 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1957 | |
1958 | switch (ms->c_sclass) | |
1959 | { | |
1960 | case C_MOE: | |
1961 | sym = (struct symbol *) xmalloc (sizeof (struct symbol)); | |
4ed3a9ea | 1962 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 RP |
1963 | |
1964 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); | |
1965 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1966 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1967 | SYMBOL_VALUE (sym) = ms->c_value; | |
c438b3af | 1968 | add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
1969 | nsyms++; |
1970 | break; | |
1971 | ||
1972 | case C_EOS: | |
1973 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
1974 | up the count of how many symbols to read. So stop | |
1975 | on .eos. */ | |
1976 | done = 1; | |
1977 | break; | |
1978 | } | |
1979 | } | |
1980 | ||
1981 | /* Now fill in the fields of the type-structure. */ | |
1982 | ||
f2c365f5 JK |
1983 | if (length > 0) |
1984 | TYPE_LENGTH (type) = length; | |
1985 | else | |
1986 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ | |
bd5635a1 RP |
1987 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
1988 | TYPE_NFIELDS (type) = nsyms; | |
1989 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1990 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); |
bd5635a1 RP |
1991 | |
1992 | /* Find the symbols for the values and put them into the type. | |
1993 | The symbols can be found in the symlist that we put them on | |
1994 | to cause them to be defined. osyms contains the old value | |
1995 | of that symlist; everything up to there was defined by us. */ | |
c438b3af JK |
1996 | /* Note that we preserve the order of the enum constants, so |
1997 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
1998 | FOO, not LAST_THING. */ | |
bd5635a1 | 1999 | |
c438b3af | 2000 | for (syms = *symlist, n = 0; syms; syms = syms->next) |
bd5635a1 | 2001 | { |
c438b3af JK |
2002 | int j = 0; |
2003 | if (syms == osyms) | |
2004 | j = o_nsyms; | |
2005 | for (; j < syms->nsyms; j++,n++) | |
2006 | { | |
2007 | struct symbol *xsym = syms->symbol[j]; | |
2008 | SYMBOL_TYPE (xsym) = type; | |
2009 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2010 | TYPE_FIELD_VALUE (type, n) = 0; | |
2011 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2012 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2013 | } | |
2014 | if (syms == osyms) | |
2015 | break; | |
bd5635a1 | 2016 | } |
c438b3af | 2017 | |
e09c5e26 JK |
2018 | #if 0 |
2019 | /* This screws up perfectly good C programs with enums. FIXME. */ | |
d8ce1326 JG |
2020 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ |
2021 | if(TYPE_NFIELDS(type) == 2 && | |
c653bc6d JG |
2022 | ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") && |
2023 | STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2024 | (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2025 | STREQ(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
d8ce1326 | 2026 | TYPE_CODE(type) = TYPE_CODE_BOOL; |
e09c5e26 | 2027 | #endif |
bd5635a1 RP |
2028 | return type; |
2029 | } | |
2030 | ||
85f0a848 FF |
2031 | struct section_offsets * |
2032 | coff_symfile_offsets (objfile, addr) | |
2033 | struct objfile *objfile; | |
2034 | CORE_ADDR addr; | |
2035 | { | |
b5b186a2 SS |
2036 | struct section_offsets *section_offsets; |
2037 | int i; | |
4d57c599 JK |
2038 | |
2039 | objfile->num_sections = SECT_OFF_MAX; | |
b5b186a2 SS |
2040 | section_offsets = (struct section_offsets *) |
2041 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2042 | sizeof (struct section_offsets) |
2043 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
b5b186a2 SS |
2044 | |
2045 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2046 | ANOFFSET (section_offsets, i) = addr; | |
2047 | ||
2048 | return section_offsets; | |
85f0a848 FF |
2049 | } |
2050 | ||
bd5635a1 RP |
2051 | /* Register our ability to parse symbols for coff BFD files */ |
2052 | ||
2053 | static struct sym_fns coff_sym_fns = | |
2054 | { | |
0eed42de | 2055 | bfd_target_coff_flavour, |
80d68b1d FF |
2056 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2057 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2058 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2059 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
85f0a848 | 2060 | coff_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
80d68b1d | 2061 | NULL /* next: pointer to next struct sym_fns */ |
bd5635a1 RP |
2062 | }; |
2063 | ||
2064 | void | |
2065 | _initialize_coffread () | |
2066 | { | |
2067 | add_symtab_fns(&coff_sym_fns); | |
2068 | } |