Commit | Line | Data |
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bd5635a1 | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
7f4c8595 SS |
2 | Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 |
3 | Free Software Foundation, Inc. | |
d8ce1326 | 4 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
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 | 25 | #include "breakpoint.h" |
27ad511f | 26 | |
bd5635a1 | 27 | #include "bfd.h" |
bd5635a1 | 28 | #include <obstack.h> |
318bf84f | 29 | |
bd5635a1 RP |
30 | #include <string.h> |
31 | ||
f5f0679a | 32 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
63989338 JG |
33 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
34 | ||
27ad511f JK |
35 | #include "symfile.h" |
36 | #include "objfiles.h" | |
37 | #include "buildsym.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "stabsread.h" | |
40 | #include "complaints.h" | |
41 | ||
b5b186a2 | 42 | struct coff_symfile_info { |
8f6960c9 JK |
43 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ |
44 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
b5b186a2 SS |
45 | |
46 | asection *stabsect; /* Section pointer for .stab section */ | |
47 | asection *stabstrsect; /* Section pointer for .stab section */ | |
48 | asection *stabindexsect; /* Section pointer for .stab.index section */ | |
49 | char *stabstrdata; | |
b5b186a2 SS |
50 | }; |
51 | ||
de9bef49 JG |
52 | /* Translate an external name string into a user-visible name. */ |
53 | #define EXTERNAL_NAME(string, abfd) \ | |
54 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
55 | ||
8714ff35 JK |
56 | /* To be an sdb debug type, type must have at least a basic or primary |
57 | derived type. Using this rather than checking against T_NULL is | |
ab8f22a9 JK |
58 | said to prevent core dumps if we try to operate on Michael Bloom |
59 | dbx-in-coff file. */ | |
8714ff35 JK |
60 | |
61 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
62 | ||
7f4c8595 SS |
63 | /* Convert from an sdb register number to an internal gdb register number. |
64 | This should be defined in tm.h, if REGISTER_NAMES is not set up | |
65 | to map one to one onto the sdb register numbers. */ | |
66 | ||
d8ce1326 JG |
67 | #ifndef SDB_REG_TO_REGNUM |
68 | # define SDB_REG_TO_REGNUM(value) (value) | |
69 | #endif | |
70 | ||
bd5635a1 RP |
71 | /* Core address of start and end of text of current source file. |
72 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
73 | ||
7f4c8595 SS |
74 | static CORE_ADDR current_source_start_addr; |
75 | static CORE_ADDR current_source_end_addr; | |
bd5635a1 | 76 | |
bd5635a1 RP |
77 | /* The addresses of the symbol table stream and number of symbols |
78 | of the object file we are reading (as copied into core). */ | |
79 | ||
7f4c8595 | 80 | static bfd *nlist_bfd_global; |
bd5635a1 RP |
81 | static int nlist_nsyms_global; |
82 | ||
bd5635a1 RP |
83 | /* Vector of line number information. */ |
84 | ||
85 | static struct linetable *line_vector; | |
86 | ||
87 | /* Index of next entry to go in line_vector_index. */ | |
88 | ||
89 | static int line_vector_index; | |
90 | ||
91 | /* Last line number recorded in the line vector. */ | |
92 | ||
93 | static int prev_line_number; | |
94 | ||
95 | /* Number of elements allocated for line_vector currently. */ | |
96 | ||
97 | static int line_vector_length; | |
98 | ||
d8ce1326 JG |
99 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
100 | ||
101 | static char *temp_sym; | |
102 | static char *temp_aux; | |
103 | ||
104 | /* Local variables that hold the shift and mask values for the | |
105 | COFF file that we are currently reading. These come back to us | |
106 | from BFD, and are referenced by their macro names, as well as | |
107 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
7f4c8595 | 108 | macros from include/coff/internal.h . */ |
d8ce1326 JG |
109 | |
110 | static unsigned local_n_btmask; | |
111 | static unsigned local_n_btshft; | |
112 | static unsigned local_n_tmask; | |
113 | static unsigned local_n_tshift; | |
114 | ||
115 | #define N_BTMASK local_n_btmask | |
116 | #define N_BTSHFT local_n_btshft | |
117 | #define N_TMASK local_n_tmask | |
118 | #define N_TSHIFT local_n_tshift | |
119 | ||
120 | /* Local variables that hold the sizes in the file of various COFF structures. | |
121 | (We only need to know this to read them from the file -- BFD will then | |
122 | translate the data in them, into `internal_xxx' structs in the right | |
123 | byte order, alignment, etc.) */ | |
124 | ||
125 | static unsigned local_linesz; | |
126 | static unsigned local_symesz; | |
127 | static unsigned local_auxesz; | |
128 | ||
bd5635a1 RP |
129 | /* Chain of typedefs of pointers to empty struct/union types. |
130 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
131 | ||
bd5635a1 RP |
132 | static struct symbol *opaque_type_chain[HASHSIZE]; |
133 | ||
d8ce1326 JG |
134 | #if 0 |
135 | /* The type of the function we are currently reading in. This is | |
136 | used by define_symbol to record the type of arguments to a function. */ | |
137 | ||
138 | struct type *in_function_type; | |
139 | #endif | |
140 | ||
bd5635a1 RP |
141 | /* Complaints about various problems in the file being read */ |
142 | ||
143 | struct complaint ef_complaint = | |
144 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
145 | ||
7e258d18 PB |
146 | struct complaint bf_no_aux_complaint = |
147 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
148 | ||
149 | struct complaint ef_no_aux_complaint = | |
150 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 151 | |
63989338 JG |
152 | struct complaint lineno_complaint = |
153 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
154 | ||
7e258d18 PB |
155 | struct complaint unexpected_type_complaint = |
156 | {"Unexpected type for symbol %s", 0, 0}; | |
157 | ||
158 | struct complaint bad_sclass_complaint = | |
159 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f | 160 | |
f70be3e4 JG |
161 | struct complaint misordered_blocks_complaint = |
162 | {"Blocks out of order at address %x", 0, 0}; | |
163 | ||
164 | struct complaint tagndx_bad_complaint = | |
165 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; | |
166 | ||
de9bef49 JG |
167 | struct complaint eb_complaint = |
168 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
169 | ||
318bf84f FF |
170 | /* Simplified internal version of coff symbol table information */ |
171 | ||
172 | struct coff_symbol { | |
173 | char *c_name; | |
174 | int c_symnum; /* symbol number of this entry */ | |
175 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
176 | long c_value; | |
177 | int c_sclass; | |
178 | int c_secnum; | |
179 | unsigned int c_type; | |
180 | }; | |
181 | ||
7f4c8595 | 182 | static struct type *coff_read_struct_type PARAMS ((int, int, int)); |
318bf84f | 183 | |
7f4c8595 SS |
184 | static struct type *decode_base_type PARAMS ((struct coff_symbol *, |
185 | unsigned int, | |
186 | union internal_auxent *)); | |
318bf84f | 187 | |
7f4c8595 SS |
188 | static struct type *decode_type PARAMS ((struct coff_symbol *, unsigned int, |
189 | union internal_auxent *)); | |
318bf84f | 190 | |
7f4c8595 SS |
191 | static struct type *decode_function_type PARAMS ((struct coff_symbol *, |
192 | unsigned int, | |
193 | union internal_auxent *)); | |
318bf84f | 194 | |
7f4c8595 | 195 | static struct type *coff_read_enum_type PARAMS ((int, int, int)); |
318bf84f | 196 | |
7f4c8595 SS |
197 | static struct symbol *process_coff_symbol PARAMS ((struct coff_symbol *, |
198 | union internal_auxent *, | |
199 | struct section_offsets *, | |
200 | struct objfile *)); | |
318bf84f | 201 | |
7f4c8595 | 202 | static void patch_opaque_types PARAMS ((struct symtab *)); |
318bf84f | 203 | |
7f4c8595 | 204 | static void patch_type PARAMS ((struct type *, struct type *)); |
318bf84f | 205 | |
7f4c8595 | 206 | static void enter_linenos PARAMS ((long, int, int, struct section_offsets *)); |
318bf84f | 207 | |
7f4c8595 | 208 | static void free_linetab PARAMS ((void)); |
e09c5e26 | 209 | |
7f4c8595 | 210 | static int init_lineno PARAMS ((bfd *, long, int)); |
318bf84f | 211 | |
7f4c8595 | 212 | static char *getsymname PARAMS ((struct internal_syment *)); |
318bf84f | 213 | |
7f4c8595 | 214 | static void free_stringtab PARAMS ((void)); |
318bf84f | 215 | |
7f4c8595 | 216 | static int init_stringtab PARAMS ((bfd *, long)); |
318bf84f | 217 | |
7f4c8595 SS |
218 | static void read_one_sym PARAMS ((struct coff_symbol *, |
219 | struct internal_syment *, | |
220 | union internal_auxent *)); | |
318bf84f | 221 | |
7f4c8595 SS |
222 | static void coff_symtab_read PARAMS ((long, int, struct section_offsets *, |
223 | struct objfile *)); | |
318bf84f | 224 | |
7f4c8595 | 225 | static void find_linenos PARAMS ((bfd *, sec_ptr, PTR)); |
318bf84f | 226 | |
7f4c8595 | 227 | static void coff_symfile_init PARAMS ((struct objfile *)); |
318bf84f | 228 | |
7f4c8595 | 229 | static void coff_new_init PARAMS ((struct objfile *)); |
318bf84f | 230 | |
7f4c8595 SS |
231 | static void coff_symfile_read PARAMS ((struct objfile *, |
232 | struct section_offsets *, int)); | |
80d68b1d | 233 | |
7f4c8595 | 234 | static void coff_symfile_finish PARAMS ((struct objfile *)); |
318bf84f | 235 | |
7f4c8595 SS |
236 | static void record_minimal_symbol PARAMS ((char *, CORE_ADDR, |
237 | enum minimal_symbol_type, | |
238 | struct objfile *)); | |
318bf84f | 239 | |
7f4c8595 | 240 | static void coff_end_symtab PARAMS ((struct objfile *)); |
318bf84f | 241 | |
7f4c8595 | 242 | static void complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); |
318bf84f | 243 | |
7f4c8595 | 244 | static void coff_start_symtab PARAMS ((void)); |
318bf84f | 245 | |
7f4c8595 | 246 | static void coff_record_line PARAMS ((int, CORE_ADDR)); |
318bf84f | 247 | |
7f4c8595 | 248 | static struct type *coff_alloc_type PARAMS ((int)); |
318bf84f | 249 | |
7f4c8595 | 250 | static struct type **coff_lookup_type PARAMS ((int)); |
318bf84f | 251 | |
7f4c8595 | 252 | static void coff_locate_sections PARAMS ((bfd *, asection *, PTR)); |
bd5635a1 | 253 | \f |
b5b186a2 SS |
254 | /* We are called once per section from coff_symfile_read. We |
255 | need to examine each section we are passed, check to see | |
256 | if it is something we are interested in processing, and | |
257 | if so, stash away some access information for the section. | |
258 | ||
0ccbaadc | 259 | FIXME: The section names should not be hardwired strings (what |
8f6960c9 JK |
260 | should they be? I don't think most object file formats have enough |
261 | section flags to specify what kind of debug section it is | |
262 | -kingdon). */ | |
b5b186a2 SS |
263 | |
264 | static void | |
265 | coff_locate_sections (ignore_abfd, sectp, csip) | |
266 | bfd *ignore_abfd; | |
267 | asection *sectp; | |
268 | PTR csip; | |
269 | { | |
270 | register struct coff_symfile_info *csi; | |
271 | ||
272 | csi = (struct coff_symfile_info *) csip; | |
273 | if (STREQ (sectp->name, ".stab")) | |
274 | { | |
275 | csi->stabsect = sectp; | |
276 | } | |
277 | else if (STREQ (sectp->name, ".stabstr")) | |
278 | { | |
279 | csi->stabstrsect = sectp; | |
280 | } | |
281 | else if (STREQ (sectp->name, ".stab.index")) | |
282 | { | |
283 | csi->stabindexsect = sectp; | |
284 | } | |
285 | } | |
286 | ||
e7b5942b JK |
287 | /* Return the section_offsets* that CS points to. */ |
288 | static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *)); | |
289 | ||
290 | struct find_targ_sec_arg { | |
291 | int targ_index; | |
292 | int *resultp; | |
293 | }; | |
294 | ||
295 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
296 | ||
297 | static void find_targ_sec (abfd, sect, obj) | |
298 | bfd *abfd; | |
299 | asection *sect; | |
300 | PTR obj; | |
301 | { | |
302 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
303 | if (sect->target_index == args->targ_index) | |
304 | { | |
305 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
306 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
307 | *args->resultp = SECT_OFF_TEXT; | |
308 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
309 | *args->resultp = SECT_OFF_DATA; | |
310 | else | |
311 | *args->resultp = SECT_OFF_BSS; | |
312 | } | |
313 | } | |
314 | ||
315 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
316 | static int | |
317 | cs_to_section (cs, objfile) | |
318 | struct coff_symbol *cs; | |
319 | struct objfile *objfile; | |
320 | { | |
321 | int off = SECT_OFF_TEXT; | |
322 | struct find_targ_sec_arg args; | |
323 | args.targ_index = cs->c_secnum; | |
324 | args.resultp = &off; | |
325 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
326 | return off; | |
327 | } | |
328 | ||
bd5635a1 RP |
329 | /* Look up a coff type-number index. Return the address of the slot |
330 | where the type for that index is stored. | |
331 | The type-number is in INDEX. | |
332 | ||
333 | This can be used for finding the type associated with that index | |
334 | or for associating a new type with the index. */ | |
335 | ||
336 | static struct type ** | |
337 | coff_lookup_type (index) | |
338 | register int index; | |
339 | { | |
340 | if (index >= type_vector_length) | |
341 | { | |
342 | int old_vector_length = type_vector_length; | |
343 | ||
344 | type_vector_length *= 2; | |
7f4c8595 | 345 | if (index /* is still */ >= type_vector_length) |
bd5635a1 | 346 | type_vector_length = index * 2; |
7f4c8595 | 347 | |
159a075e | 348 | type_vector = (struct type **) |
318bf84f FF |
349 | xrealloc ((char *) type_vector, |
350 | type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 351 | memset (&type_vector[old_vector_length], 0, |
bd5635a1 RP |
352 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
353 | } | |
159a075e | 354 | return &type_vector[index]; |
bd5635a1 RP |
355 | } |
356 | ||
357 | /* Make sure there is a type allocated for type number index | |
358 | and return the type object. | |
359 | This can create an empty (zeroed) type object. */ | |
360 | ||
361 | static struct type * | |
362 | coff_alloc_type (index) | |
363 | int index; | |
364 | { | |
365 | register struct type **type_addr = coff_lookup_type (index); | |
366 | register struct type *type = *type_addr; | |
367 | ||
368 | /* If we are referring to a type not known at all yet, | |
369 | allocate an empty type for it. | |
370 | We will fill it in later if we find out how. */ | |
318bf84f | 371 | if (type == NULL) |
bd5635a1 | 372 | { |
318bf84f | 373 | type = alloc_type (current_objfile); |
bd5635a1 RP |
374 | *type_addr = type; |
375 | } | |
376 | return type; | |
377 | } | |
378 | \f | |
0ccbaadc JK |
379 | /* Record a line number entry for line LINE at address PC. |
380 | FIXME: Use record_line instead. */ | |
381 | ||
e1ce8aa5 | 382 | static void |
318bf84f | 383 | coff_record_line (line, pc) |
bd5635a1 RP |
384 | int line; |
385 | CORE_ADDR pc; | |
386 | { | |
387 | struct linetable_entry *e; | |
388 | /* Make sure line vector is big enough. */ | |
389 | ||
390 | if (line_vector_index + 2 >= line_vector_length) | |
391 | { | |
392 | line_vector_length *= 2; | |
393 | line_vector = (struct linetable *) | |
318bf84f | 394 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
395 | + (line_vector_length |
396 | * sizeof (struct linetable_entry))); | |
397 | } | |
398 | ||
399 | e = line_vector->item + line_vector_index++; | |
400 | e->line = line; e->pc = pc; | |
401 | } | |
402 | \f | |
403 | /* Start a new symtab for a new source file. | |
404 | This is called when a COFF ".file" symbol is seen; | |
405 | it indicates the start of data for one original source file. */ | |
406 | ||
407 | static void | |
318bf84f | 408 | coff_start_symtab () |
bd5635a1 | 409 | { |
c438b3af | 410 | start_symtab ( |
ab93997d JK |
411 | /* We fill in the filename later. start_symtab puts |
412 | this pointer into last_source_file and we put it in | |
413 | subfiles->name, which end_symtab frees; that's why | |
414 | it must be malloc'd. */ | |
3ffb74b9 | 415 | savestring ("", 0), |
c438b3af JK |
416 | /* We never know the directory name for COFF. */ |
417 | NULL, | |
418 | /* The start address is irrelevant, since we set | |
419 | last_source_start_addr in coff_end_symtab. */ | |
420 | 0); | |
bd5635a1 | 421 | |
cadbb07a | 422 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 423 | |
cadbb07a | 424 | if (line_vector) /* Unlikely, but maybe possible? */ |
f70be3e4 | 425 | free ((PTR)line_vector); |
bd5635a1 RP |
426 | line_vector_index = 0; |
427 | line_vector_length = 1000; | |
428 | prev_line_number = -2; /* Force first line number to be explicit */ | |
429 | line_vector = (struct linetable *) | |
430 | xmalloc (sizeof (struct linetable) | |
431 | + line_vector_length * sizeof (struct linetable_entry)); | |
432 | } | |
433 | ||
434 | /* Save the vital information from when starting to read a file, | |
435 | for use when closing off the current file. | |
436 | NAME is the file name the symbols came from, START_ADDR is the first | |
437 | text address for the file, and SIZE is the number of bytes of text. */ | |
438 | ||
439 | static void | |
440 | complete_symtab (name, start_addr, size) | |
441 | char *name; | |
442 | CORE_ADDR start_addr; | |
443 | unsigned int size; | |
444 | { | |
ab93997d JK |
445 | if (last_source_file != NULL) |
446 | free (last_source_file); | |
bd5635a1 | 447 | last_source_file = savestring (name, strlen (name)); |
7f4c8595 SS |
448 | current_source_start_addr = start_addr; |
449 | current_source_end_addr = start_addr + size; | |
bd5635a1 | 450 | |
7f4c8595 SS |
451 | if (current_objfile -> ei.entry_point >= current_source_start_addr && |
452 | current_objfile -> ei.entry_point < current_source_end_addr) | |
bd5635a1 | 453 | { |
7f4c8595 SS |
454 | current_objfile -> ei.entry_file_lowpc = current_source_start_addr; |
455 | current_objfile -> ei.entry_file_highpc = current_source_end_addr; | |
bd5635a1 RP |
456 | } |
457 | } | |
458 | ||
459 | /* Finish the symbol definitions for one main source file, | |
460 | close off all the lexical contexts for that file | |
461 | (creating struct block's for them), then make the | |
462 | struct symtab for that file and put it in the list of all such. */ | |
463 | ||
464 | static void | |
318bf84f | 465 | coff_end_symtab (objfile) |
a048c8f5 | 466 | struct objfile *objfile; |
bd5635a1 | 467 | { |
c438b3af | 468 | struct symtab *symtab; |
bd5635a1 | 469 | |
7f4c8595 | 470 | last_source_start_addr = current_source_start_addr; |
bd5635a1 | 471 | |
fc773653 JK |
472 | /* For no good reason, this file stores the number of entries in a |
473 | separate variable instead of in line_vector->nitems. Fix it. */ | |
474 | if (line_vector) | |
475 | line_vector->nitems = line_vector_index; | |
476 | ||
c438b3af JK |
477 | /* For COFF, we only have one subfile, so we can just look at |
478 | subfiles and not worry about there being other elements in the | |
479 | chain. We fill in various fields now because we didn't know them | |
480 | before (or because doing it now is simply an artifact of how this | |
481 | file used to be written). */ | |
482 | subfiles->line_vector = line_vector; | |
483 | subfiles->name = last_source_file; | |
bd5635a1 | 484 | |
c438b3af JK |
485 | /* sort_pending is needed for amdcoff, at least. |
486 | sort_linevec is needed for the SCO compiler. */ | |
7f4c8595 | 487 | symtab = end_symtab (current_source_end_addr, 1, 1, objfile, 0); |
bd5635a1 | 488 | |
c438b3af JK |
489 | if (symtab != NULL) |
490 | free_named_symtabs (symtab->filename); | |
a6e2b424 | 491 | |
bd5635a1 RP |
492 | /* Reinitialize for beginning of new file. */ |
493 | line_vector = 0; | |
494 | line_vector_length = -1; | |
85f0a848 | 495 | last_source_file = NULL; |
bd5635a1 RP |
496 | } |
497 | \f | |
498 | static void | |
af8b7906 | 499 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
500 | char *name; |
501 | CORE_ADDR address; | |
f70be3e4 | 502 | enum minimal_symbol_type type; |
af8b7906 | 503 | struct objfile *objfile; |
bd5635a1 | 504 | { |
318bf84f | 505 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 506 | if (name[0] == '@') return; |
e140f1da | 507 | |
ab93997d JK |
508 | prim_record_minimal_symbol |
509 | (obsavestring (name, strlen (name), &objfile->symbol_obstack), | |
510 | address, type, | |
511 | objfile); | |
bd5635a1 RP |
512 | } |
513 | \f | |
514 | /* coff_symfile_init () | |
515 | is the coff-specific initialization routine for reading symbols. | |
3624c875 | 516 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
517 | the BFD for the file whose symbols are being read, and a slot for |
518 | a pointer to "private data" which we fill with cookies and other | |
519 | treats for coff_symfile_read (). | |
520 | ||
521 | We will only be called if this is a COFF or COFF-like file. | |
522 | BFD handles figuring out the format of the file, and code in symtab.c | |
523 | uses BFD's determination to vector to us. | |
524 | ||
525 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
526 | ||
9bba3334 | 527 | static void |
80d68b1d FF |
528 | coff_symfile_init (objfile) |
529 | struct objfile *objfile; | |
bd5635a1 | 530 | { |
80d68b1d | 531 | bfd *abfd = objfile->obfd; |
bd5635a1 | 532 | |
8f6960c9 JK |
533 | /* Allocate struct to keep track of stab reading. */ |
534 | objfile->sym_stab_info = (PTR) | |
535 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); | |
536 | ||
537 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); | |
538 | ||
bd5635a1 | 539 | /* Allocate struct to keep track of the symfile */ |
80d68b1d FF |
540 | objfile -> sym_private = xmmalloc (objfile -> md, |
541 | sizeof (struct coff_symfile_info)); | |
bd5635a1 | 542 | |
b5b186a2 SS |
543 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); |
544 | ||
3624c875 | 545 | init_entry_point_info (objfile); |
bd5635a1 RP |
546 | } |
547 | ||
548 | /* This function is called for every section; it finds the outer limits | |
549 | of the line table (minimum and maximum file offset) so that the | |
550 | mainline code can read the whole thing for efficiency. */ | |
551 | ||
e1ce8aa5 | 552 | /* ARGSUSED */ |
bd5635a1 RP |
553 | static void |
554 | find_linenos (abfd, asect, vpinfo) | |
555 | bfd *abfd; | |
556 | sec_ptr asect; | |
318bf84f | 557 | PTR vpinfo; |
bd5635a1 RP |
558 | { |
559 | struct coff_symfile_info *info; | |
560 | int size, count; | |
561 | file_ptr offset, maxoff; | |
562 | ||
563 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
564 | count = asect->lineno_count; | |
565 | /* End of warning */ | |
566 | ||
567 | if (count == 0) | |
568 | return; | |
d8ce1326 | 569 | size = count * local_linesz; |
bd5635a1 RP |
570 | |
571 | info = (struct coff_symfile_info *)vpinfo; | |
572 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
573 | offset = asect->line_filepos; | |
574 | /* End of warning */ | |
575 | ||
576 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
577 | info->min_lineno_offset = offset; | |
578 | ||
579 | maxoff = offset + size; | |
580 | if (maxoff > info->max_lineno_offset) | |
581 | info->max_lineno_offset = maxoff; | |
582 | } | |
583 | ||
584 | ||
e1ce8aa5 JK |
585 | /* The BFD for this file -- only good while we're actively reading |
586 | symbols into a psymtab or a symtab. */ | |
587 | ||
588 | static bfd *symfile_bfd; | |
589 | ||
bd5635a1 | 590 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
bd5635a1 | 591 | |
61a7292f | 592 | /* ARGSUSED */ |
9bba3334 | 593 | static void |
85f0a848 | 594 | coff_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 595 | struct objfile *objfile; |
85f0a848 | 596 | struct section_offsets *section_offsets; |
bd5635a1 RP |
597 | int mainline; |
598 | { | |
80d68b1d | 599 | struct coff_symfile_info *info; |
8f6960c9 | 600 | struct dbx_symfile_info *dbxinfo; |
80d68b1d | 601 | bfd *abfd = objfile->obfd; |
d8ce1326 | 602 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 | 603 | char *name = bfd_get_filename (abfd); |
bd5635a1 RP |
604 | register int val; |
605 | int num_symbols; | |
606 | int symtab_offset; | |
607 | int stringtab_offset; | |
e09c5e26 | 608 | struct cleanup *back_to; |
b5b186a2 | 609 | int stabsize, stabstrsize; |
bd5635a1 | 610 | |
80d68b1d | 611 | info = (struct coff_symfile_info *) objfile -> sym_private; |
8f6960c9 | 612 | dbxinfo = (struct dbx_symfile_info *) objfile->sym_stab_info; |
bd5635a1 RP |
613 | symfile_bfd = abfd; /* Kludge for swap routines */ |
614 | ||
615 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
bd5635a1 | 616 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
617 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
618 | stringtab_offset = symtab_offset + /* String table file offset */ | |
619 | num_symbols * cdata->local_symesz; | |
620 | ||
621 | /* Set a few file-statics that give us specific information about | |
622 | the particular COFF file format we're reading. */ | |
623 | local_linesz = cdata->local_linesz; | |
624 | local_n_btmask = cdata->local_n_btmask; | |
625 | local_n_btshft = cdata->local_n_btshft; | |
626 | local_n_tmask = cdata->local_n_tmask; | |
627 | local_n_tshift = cdata->local_n_tshift; | |
628 | local_linesz = cdata->local_linesz; | |
629 | local_symesz = cdata->local_symesz; | |
630 | local_auxesz = cdata->local_auxesz; | |
631 | ||
632 | /* Allocate space for raw symbol and aux entries, based on their | |
633 | space requirements as reported by BFD. */ | |
634 | temp_sym = (char *) xmalloc | |
635 | (cdata->local_symesz + cdata->local_auxesz); | |
636 | temp_aux = temp_sym + cdata->local_symesz; | |
e09c5e26 | 637 | back_to = make_cleanup (free_current_contents, &temp_sym); |
bd5635a1 RP |
638 | /* End of warning */ |
639 | ||
bd5635a1 RP |
640 | /* Read the line number table, all at once. */ |
641 | info->min_lineno_offset = 0; | |
642 | info->max_lineno_offset = 0; | |
b5b186a2 | 643 | bfd_map_over_sections (abfd, find_linenos, (PTR) info); |
bd5635a1 | 644 | |
e09c5e26 | 645 | make_cleanup (free_linetab, 0); |
7f4c8595 | 646 | val = init_lineno (abfd, info->min_lineno_offset, |
bd5635a1 RP |
647 | info->max_lineno_offset - info->min_lineno_offset); |
648 | if (val < 0) | |
649 | error ("\"%s\": error reading line numbers\n", name); | |
650 | ||
651 | /* Now read the string table, all at once. */ | |
652 | ||
e09c5e26 | 653 | make_cleanup (free_stringtab, 0); |
7f4c8595 | 654 | val = init_stringtab (abfd, stringtab_offset); |
bd5635a1 | 655 | if (val < 0) |
a048c8f5 | 656 | error ("\"%s\": can't get string table", name); |
bd5635a1 | 657 | |
318bf84f FF |
658 | init_minimal_symbol_collection (); |
659 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
660 | |
661 | /* Now that the executable file is positioned at symbol table, | |
662 | process it and define symbols accordingly. */ | |
663 | ||
7f4c8595 SS |
664 | coff_symtab_read ((long) symtab_offset, num_symbols, section_offsets, |
665 | objfile); | |
bd5635a1 RP |
666 | |
667 | /* Sort symbols alphabetically within each block. */ | |
668 | ||
9c38eb65 JK |
669 | { |
670 | struct symtab *s; | |
7f4c8595 | 671 | |
9c38eb65 | 672 | for (s = objfile -> symtabs; s != NULL; s = s -> next) |
7f4c8595 | 673 | sort_symtab_syms (s); |
9c38eb65 | 674 | } |
bd5635a1 | 675 | |
318bf84f | 676 | /* Install any minimal symbols that have been collected as the current |
7f4c8595 | 677 | minimal symbols for this objfile. */ |
bd5635a1 | 678 | |
80d68b1d | 679 | install_minimal_symbols (objfile); |
e09c5e26 | 680 | |
b5b186a2 SS |
681 | bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info); |
682 | ||
683 | if (info->stabsect) | |
684 | { | |
0ccbaadc JK |
685 | /* FIXME: dubious. Why can't we use something normal like |
686 | bfd_get_section_contents? */ | |
7f4c8595 | 687 | bfd_seek (abfd, abfd->where, 0); |
b5b186a2 SS |
688 | |
689 | stabsize = bfd_section_size (abfd, info->stabsect); | |
690 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
691 | ||
692 | coffstab_build_psymtabs (objfile, | |
693 | section_offsets, | |
694 | mainline, | |
695 | info->stabsect->filepos, stabsize, | |
696 | info->stabstrsect->filepos, stabstrsize); | |
697 | } | |
698 | ||
e09c5e26 | 699 | do_cleanups (back_to); |
bd5635a1 RP |
700 | } |
701 | ||
9bba3334 | 702 | static void |
f70be3e4 JG |
703 | coff_new_init (ignore) |
704 | struct objfile *ignore; | |
bd5635a1 | 705 | { |
bd5635a1 | 706 | } |
80d68b1d FF |
707 | |
708 | /* Perform any local cleanups required when we are done with a particular | |
709 | objfile. I.E, we are in the process of discarding all symbol information | |
710 | for an objfile, freeing up all memory held for it, and unlinking the | |
711 | objfile struct from the global list of known objfiles. */ | |
712 | ||
713 | static void | |
714 | coff_symfile_finish (objfile) | |
715 | struct objfile *objfile; | |
716 | { | |
717 | if (objfile -> sym_private != NULL) | |
718 | { | |
719 | mfree (objfile -> md, objfile -> sym_private); | |
720 | } | |
721 | } | |
722 | ||
bd5635a1 | 723 | \f |
bd5635a1 RP |
724 | /* Given pointers to a symbol table in coff style exec file, |
725 | analyze them and create struct symtab's describing the symbols. | |
726 | NSYMS is the number of symbols in the symbol table. | |
727 | We read them one at a time using read_one_sym (). */ | |
728 | ||
729 | static void | |
7f4c8595 | 730 | coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile) |
f70be3e4 | 731 | long symtab_offset; |
bd5635a1 | 732 | int nsyms; |
7f4c8595 | 733 | struct section_offsets *section_offsets; |
a048c8f5 | 734 | struct objfile *objfile; |
bd5635a1 | 735 | { |
c438b3af | 736 | register struct context_stack *new; |
bd5635a1 RP |
737 | struct coff_symbol coff_symbol; |
738 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
739 | static struct internal_syment main_sym; |
740 | static union internal_auxent main_aux; | |
bd5635a1 | 741 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
742 | static struct internal_syment fcn_sym_saved; |
743 | static union internal_auxent fcn_aux_saved; | |
f70be3e4 | 744 | struct symtab *s; |
bd5635a1 RP |
745 | /* A .file is open. */ |
746 | int in_source_file = 0; | |
bd5635a1 | 747 | int next_file_symnum = -1; |
bd5635a1 RP |
748 | /* Name of the current file. */ |
749 | char *filestring = ""; | |
f70be3e4 JG |
750 | int depth = 0; |
751 | int fcn_first_line = 0; | |
752 | int fcn_last_line = 0; | |
753 | int fcn_start_addr = 0; | |
754 | long fcn_line_ptr = 0; | |
f70be3e4 | 755 | int val; |
7f4c8595 | 756 | CORE_ADDR tmpaddr; |
bd5635a1 | 757 | |
f2c365f5 | 758 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
fc312cc6 JK |
759 | it's hard to know I've really worked around it. The fix should be |
760 | harmless, anyway). The symptom of the bug is that the first | |
761 | fread (in read_one_sym), will (in my example) actually get data | |
762 | from file offset 268, when the fseek was to 264 (and ftell shows | |
763 | 264). This causes all hell to break loose. I was unable to | |
764 | reproduce this on a short test program which operated on the same | |
765 | file, performing (I think) the same sequence of operations. | |
766 | ||
7f4c8595 | 767 | It stopped happening when I put in this (former) rewind(). |
fc312cc6 JK |
768 | |
769 | FIXME: Find out if this has been reported to Sun, whether it has | |
770 | been fixed in a later release, etc. */ | |
771 | ||
7f4c8595 | 772 | bfd_seek (objfile->obfd, 0, 0); |
f2c365f5 | 773 | |
f70be3e4 | 774 | /* Position to read the symbol table. */ |
7f4c8595 | 775 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
f70be3e4 JG |
776 | if (val < 0) |
777 | perror_with_name (objfile->name); | |
bd5635a1 | 778 | |
318bf84f | 779 | current_objfile = objfile; |
7f4c8595 | 780 | nlist_bfd_global = objfile->obfd; |
bd5635a1 | 781 | nlist_nsyms_global = nsyms; |
85f0a848 | 782 | last_source_file = NULL; |
4ed3a9ea | 783 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
bd5635a1 | 784 | |
cadbb07a | 785 | if (type_vector) /* Get rid of previous one */ |
7f4c8595 | 786 | free ((PTR) type_vector); |
bd5635a1 | 787 | type_vector_length = 160; |
159a075e | 788 | type_vector = (struct type **) |
7f4c8595 | 789 | xmalloc (type_vector_length * sizeof (struct type *)); |
4ed3a9ea | 790 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); |
bd5635a1 | 791 | |
318bf84f | 792 | coff_start_symtab (); |
bd5635a1 RP |
793 | |
794 | symnum = 0; | |
795 | while (symnum < nsyms) | |
796 | { | |
797 | QUIT; /* Make this command interruptable. */ | |
7f4c8595 | 798 | |
bd5635a1 RP |
799 | read_one_sym (cs, &main_sym, &main_aux); |
800 | ||
801 | #ifdef SEM | |
802 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
803 | cs->c_name[2] << 8 | cs->c_name[3]; | |
804 | if (int_sem_val == temp_sem_val) | |
805 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
806 | #endif | |
807 | ||
808 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
809 | { | |
810 | if (last_source_file) | |
318bf84f | 811 | coff_end_symtab (objfile); |
bd5635a1 | 812 | |
318bf84f | 813 | coff_start_symtab (); |
af8b7906 | 814 | complete_symtab ("_globals_", 0, 0); |
bd5635a1 RP |
815 | /* done with all files, everything from here on out is globals */ |
816 | } | |
817 | ||
818 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
819 | if (!last_source_file && SDB_TYPE (cs->c_type) |
820 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
821 | complete_symtab (filestring, 0, 0); |
822 | ||
823 | /* Typedefs should not be treated as symbol definitions. */ | |
824 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
825 | { | |
e09c5e26 | 826 | /* Record all functions -- external and static -- in minsyms. */ |
7f4c8595 SS |
827 | tmpaddr = cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT); |
828 | record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile); | |
bd5635a1 RP |
829 | |
830 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
7f4c8595 | 831 | fcn_start_addr = tmpaddr; |
bd5635a1 RP |
832 | fcn_cs_saved = *cs; |
833 | fcn_sym_saved = main_sym; | |
834 | fcn_aux_saved = main_aux; | |
835 | continue; | |
836 | } | |
837 | ||
838 | switch (cs->c_sclass) | |
839 | { | |
840 | case C_EFCN: | |
841 | case C_EXTDEF: | |
842 | case C_ULABEL: | |
843 | case C_USTATIC: | |
844 | case C_LINE: | |
845 | case C_ALIAS: | |
846 | case C_HIDDEN: | |
7e258d18 | 847 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
848 | break; |
849 | ||
850 | case C_FILE: | |
7f4c8595 SS |
851 | /* c_value field contains symnum of next .file entry in table |
852 | or symnum of first global after last .file. */ | |
bd5635a1 | 853 | next_file_symnum = cs->c_value; |
f0fcf00a | 854 | if (cs->c_naux > 0) |
af8b7906 | 855 | filestring = coff_getfilename (&main_aux); |
f0fcf00a SG |
856 | else |
857 | filestring = ""; | |
858 | ||
7f4c8595 SS |
859 | /* Complete symbol table for last object file |
860 | containing debugging information. */ | |
bd5635a1 RP |
861 | if (last_source_file) |
862 | { | |
318bf84f FF |
863 | coff_end_symtab (objfile); |
864 | coff_start_symtab (); | |
bd5635a1 RP |
865 | } |
866 | in_source_file = 1; | |
867 | break; | |
868 | ||
869 | case C_STAT: | |
7f4c8595 SS |
870 | if (cs->c_name[0] == '.') |
871 | { | |
872 | if (STREQ (cs->c_name, ".text")) { | |
873 | /* FIXME: don't wire in ".text" as section name | |
874 | or symbol name! */ | |
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, | |
880 | cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
881 | main_aux.x_scn.x_scnlen); | |
882 | in_source_file = 0; | |
883 | } | |
884 | /* flush rest of '.' symbols */ | |
885 | break; | |
886 | } | |
8714ff35 | 887 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
888 | && cs->c_name[0] == 'L' |
889 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 890 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
891 | || strncmp (cs->c_name,"LC%",3) == 0 |
892 | || strncmp (cs->c_name,"LP%",3) == 0 | |
893 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
894 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
895 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
896 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
897 | /* At least on a 3b1, gcc generates swbeg and string labels | |
898 | that look like this. Ignore them. */ | |
899 | break; | |
900 | /* fall in for static symbols that don't start with '.' */ | |
901 | case C_EXT: | |
e7b5942b JK |
902 | { |
903 | /* Record it in the minimal symbols regardless of | |
904 | SDB_TYPE. This parallels what we do for other debug | |
905 | formats, and probably is needed to make | |
906 | print_address_symbolic work right without the (now | |
907 | gone) "set fast-symbolic-addr off" kludge. */ | |
908 | ||
909 | /* FIXME: should use mst_abs, and not relocate, if absolute. */ | |
910 | enum minimal_symbol_type ms_type; | |
911 | int sec = cs_to_section (cs, objfile); | |
912 | tmpaddr = cs->c_value; | |
913 | if (cs->c_sclass != C_STAT) | |
914 | tmpaddr += ANOFFSET (section_offsets, sec); | |
915 | switch (sec) | |
916 | { | |
917 | case SECT_OFF_TEXT: | |
918 | case SECT_OFF_RODATA: | |
919 | ms_type = cs->c_sclass == C_STAT ? mst_file_text : mst_text; | |
920 | break; | |
921 | case SECT_OFF_DATA: | |
922 | ms_type = cs->c_sclass == C_STAT ? mst_file_data : mst_data; | |
923 | break; | |
924 | case SECT_OFF_BSS: | |
925 | ms_type = cs->c_sclass == C_STAT ? mst_file_bss : mst_bss; | |
926 | break; | |
927 | default: | |
928 | ms_type = mst_unknown; | |
929 | break; | |
930 | } | |
931 | ||
932 | record_minimal_symbol (cs->c_name, tmpaddr, ms_type, objfile); | |
933 | } | |
934 | ||
1c95d7ab | 935 | if (SDB_TYPE (cs->c_type)) |
7f4c8595 | 936 | process_coff_symbol (cs, &main_aux, section_offsets, objfile); |
bd5635a1 RP |
937 | break; |
938 | ||
939 | case C_FCN: | |
c653bc6d | 940 | if (STREQ (cs->c_name, ".bf")) |
bd5635a1 RP |
941 | { |
942 | within_function = 1; | |
943 | ||
944 | /* value contains address of first non-init type code */ | |
945 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
946 | contains line number of '{' } */ | |
e64fbb3a | 947 | if (cs->c_naux != 1) |
51b80b00 | 948 | complain (&bf_no_aux_complaint, cs->c_symnum); |
bd5635a1 RP |
949 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
950 | ||
c438b3af JK |
951 | /* Might want to check that locals are 0 and |
952 | context_stack_depth is zero, and complain if not. */ | |
953 | ||
954 | depth = 0; | |
955 | new = push_context (depth, fcn_start_addr); | |
bd5635a1 | 956 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
7f4c8595 SS |
957 | new->name = |
958 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, | |
959 | section_offsets, objfile); | |
bd5635a1 | 960 | } |
c653bc6d | 961 | else if (STREQ (cs->c_name, ".ef")) |
bd5635a1 | 962 | { |
c438b3af JK |
963 | /* the value of .ef is the address of epilogue code; |
964 | not useful for gdb. */ | |
bd5635a1 RP |
965 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
966 | contains number of lines to '}' */ | |
c438b3af JK |
967 | new = pop_context (); |
968 | /* Stack must be empty now. */ | |
969 | if (context_stack_depth > 0 || new == NULL) | |
bd5635a1 | 970 | { |
51b80b00 | 971 | complain (&ef_complaint, cs->c_symnum); |
bd5635a1 RP |
972 | within_function = 0; |
973 | break; | |
974 | } | |
c438b3af JK |
975 | if (cs->c_naux != 1) |
976 | { | |
977 | complain (&ef_no_aux_complaint, cs->c_symnum); | |
978 | fcn_last_line = 0x7FFFFFFF; | |
979 | } | |
980 | else | |
981 | { | |
982 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
983 | } | |
7f4c8595 SS |
984 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, |
985 | section_offsets); | |
bd5635a1 | 986 | |
c438b3af | 987 | finish_block (new->name, &local_symbols, new->old_blocks, |
bd5635a1 RP |
988 | new->start_addr, |
989 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
990 | /* This macro should be defined only on | |
991 | machines where the | |
992 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
993 | field is always zero. | |
994 | So use the .bf record information that | |
995 | points to the epilogue and add the size | |
996 | of the epilogue. */ | |
7f4c8595 SS |
997 | cs->c_value |
998 | + FUNCTION_EPILOGUE_SIZE | |
999 | + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
bd5635a1 | 1000 | #else |
7f4c8595 SS |
1001 | fcn_cs_saved.c_value |
1002 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1003 | + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
bd5635a1 | 1004 | #endif |
318bf84f | 1005 | objfile |
bd5635a1 | 1006 | ); |
bd5635a1 | 1007 | within_function = 0; |
bd5635a1 RP |
1008 | } |
1009 | break; | |
1010 | ||
1011 | case C_BLOCK: | |
c653bc6d | 1012 | if (STREQ (cs->c_name, ".bb")) |
bd5635a1 | 1013 | { |
7f4c8595 SS |
1014 | tmpaddr = cs->c_value; |
1015 | tmpaddr += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1016 | push_context (++depth, tmpaddr); | |
bd5635a1 | 1017 | } |
c653bc6d | 1018 | else if (STREQ (cs->c_name, ".eb")) |
bd5635a1 | 1019 | { |
c438b3af JK |
1020 | new = pop_context (); |
1021 | if (depth-- != new->depth) | |
de9bef49 | 1022 | { |
5573d7d4 | 1023 | complain (&eb_complaint, symnum); |
de9bef49 JG |
1024 | break; |
1025 | } | |
c438b3af | 1026 | if (local_symbols && context_stack_depth > 0) |
bd5635a1 | 1027 | { |
7f4c8595 SS |
1028 | tmpaddr = |
1029 | cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 | 1030 | /* Make a block for the local symbols within. */ |
c438b3af | 1031 | finish_block (0, &local_symbols, new->old_blocks, |
7f4c8595 | 1032 | new->start_addr, tmpaddr, objfile); |
bd5635a1 | 1033 | } |
c438b3af JK |
1034 | /* Now pop locals of block just finished. */ |
1035 | local_symbols = new->locals; | |
bd5635a1 RP |
1036 | } |
1037 | break; | |
bd5635a1 RP |
1038 | |
1039 | default: | |
7f4c8595 | 1040 | process_coff_symbol (cs, &main_aux, section_offsets, objfile); |
bd5635a1 RP |
1041 | break; |
1042 | } | |
1043 | } | |
1044 | ||
1045 | if (last_source_file) | |
318bf84f | 1046 | coff_end_symtab (objfile); |
f70be3e4 JG |
1047 | |
1048 | /* Patch up any opaque types (references to types that are not defined | |
1049 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1050 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1051 | patch_opaque_types (s); | |
1052 | ||
318bf84f | 1053 | current_objfile = NULL; |
bd5635a1 RP |
1054 | } |
1055 | \f | |
1056 | /* Routines for reading headers and symbols from executable. */ | |
1057 | ||
dcc35536 JG |
1058 | /* Read the next symbol, swap it, and return it in both internal_syment |
1059 | form, and coff_symbol form. Also return its first auxent, if any, | |
1060 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1061 | |
1062 | static void | |
1063 | read_one_sym (cs, sym, aux) | |
1064 | register struct coff_symbol *cs; | |
dcc35536 JG |
1065 | register struct internal_syment *sym; |
1066 | register union internal_auxent *aux; | |
bd5635a1 | 1067 | { |
bd5635a1 RP |
1068 | int i; |
1069 | ||
1070 | cs->c_symnum = symnum; | |
7f4c8595 | 1071 | bfd_read (temp_sym, local_symesz, 1, nlist_bfd_global); |
d8ce1326 | 1072 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); |
e64fbb3a JG |
1073 | cs->c_naux = sym->n_numaux & 0xff; |
1074 | if (cs->c_naux >= 1) | |
bd5635a1 | 1075 | { |
7f4c8595 | 1076 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); |
d8ce1326 | 1077 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
bf8d9d28 | 1078 | 0, cs->c_naux, (char *)aux); |
bd5635a1 RP |
1079 | /* If more than one aux entry, read past it (only the first aux |
1080 | is important). */ | |
e64fbb3a | 1081 | for (i = 1; i < cs->c_naux; i++) |
7f4c8595 | 1082 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); |
bd5635a1 RP |
1083 | } |
1084 | cs->c_name = getsymname (sym); | |
1085 | cs->c_value = sym->n_value; | |
1086 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1087 | cs->c_secnum = sym->n_scnum; | |
1088 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1089 | if (!SDB_TYPE (cs->c_type)) |
1090 | cs->c_type = 0; | |
bd5635a1 | 1091 | |
e64fbb3a | 1092 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1093 | } |
1094 | \f | |
1095 | /* Support for string table handling */ | |
1096 | ||
1097 | static char *stringtab = NULL; | |
1098 | ||
1099 | static int | |
7f4c8595 SS |
1100 | init_stringtab (abfd, offset) |
1101 | bfd *abfd; | |
bd5635a1 RP |
1102 | long offset; |
1103 | { | |
1104 | long length; | |
1105 | int val; | |
1106 | unsigned char lengthbuf[4]; | |
1107 | ||
e09c5e26 | 1108 | free_stringtab (); |
bd5635a1 | 1109 | |
7f4c8595 SS |
1110 | /* If the file is stripped, the offset might be zero, indicating no |
1111 | string table. Just return with `stringtab' set to null. */ | |
1112 | if (offset == 0) | |
1113 | return 0; | |
1114 | ||
1115 | if (bfd_seek (abfd, offset, 0) < 0) | |
bd5635a1 RP |
1116 | return -1; |
1117 | ||
7f4c8595 | 1118 | val = bfd_read ((char *)lengthbuf, sizeof lengthbuf, 1, abfd); |
dcc35536 | 1119 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1120 | |
1121 | /* If no string table is needed, then the file may end immediately | |
1122 | after the symbols. Just return with `stringtab' set to null. */ | |
e09c5e26 | 1123 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
bd5635a1 RP |
1124 | return 0; |
1125 | ||
1126 | stringtab = (char *) xmalloc (length); | |
602d41e5 JK |
1127 | /* This is in target format (probably not very useful, and not currently |
1128 | used), not host format. */ | |
1129 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
bd5635a1 RP |
1130 | if (length == sizeof length) /* Empty table -- just the count */ |
1131 | return 0; | |
1132 | ||
7f4c8595 | 1133 | val = bfd_read (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, 1, abfd); |
e09c5e26 | 1134 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
bd5635a1 RP |
1135 | return -1; |
1136 | ||
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | static void | |
1141 | free_stringtab () | |
1142 | { | |
1143 | if (stringtab) | |
1144 | free (stringtab); | |
1145 | stringtab = NULL; | |
1146 | } | |
1147 | ||
1148 | static char * | |
1149 | getsymname (symbol_entry) | |
dcc35536 | 1150 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1151 | { |
1152 | static char buffer[SYMNMLEN+1]; | |
1153 | char *result; | |
1154 | ||
dcc35536 | 1155 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1156 | { |
602d41e5 JK |
1157 | /* FIXME: Probably should be detecting corrupt symbol files by |
1158 | seeing whether offset points to within the stringtab. */ | |
dcc35536 | 1159 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1160 | } |
1161 | else | |
1162 | { | |
dcc35536 | 1163 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1164 | buffer[SYMNMLEN] = '\0'; |
1165 | result = buffer; | |
1166 | } | |
1167 | return result; | |
1168 | } | |
1169 | ||
c653bc6d JG |
1170 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1171 | only the last component of the name. Result is in static storage and | |
1172 | is only good for temporary use. */ | |
1173 | ||
dbb0fae2 | 1174 | char * |
af8b7906 | 1175 | coff_getfilename (aux_entry) |
dcc35536 | 1176 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1177 | { |
1178 | static char buffer[BUFSIZ]; | |
1179 | register char *temp; | |
1180 | char *result; | |
bd5635a1 | 1181 | |
bd5635a1 RP |
1182 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1183 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1184 | else | |
bd5635a1 | 1185 | { |
bd5635a1 | 1186 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); |
bd5635a1 RP |
1187 | buffer[FILNMLEN] = '\0'; |
1188 | } | |
1189 | result = buffer; | |
ab93997d JK |
1190 | |
1191 | /* FIXME: We should not be throwing away the information about what | |
1192 | directory. It should go into dirname of the symtab, or some such | |
1193 | place. */ | |
318bf84f | 1194 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1195 | result = temp + 1; |
1196 | return (result); | |
1197 | } | |
1198 | \f | |
7f4c8595 SS |
1199 | /* Support for line number handling. */ |
1200 | ||
bd5635a1 RP |
1201 | static char *linetab = NULL; |
1202 | static long linetab_offset; | |
1203 | static unsigned long linetab_size; | |
1204 | ||
dcc35536 JG |
1205 | /* Read in all the line numbers for fast lookups later. Leave them in |
1206 | external (unswapped) format in memory; we'll swap them as we enter | |
1207 | them into GDB's data structures. */ | |
bd5635a1 RP |
1208 | |
1209 | static int | |
7f4c8595 SS |
1210 | init_lineno (abfd, offset, size) |
1211 | bfd *abfd; | |
bd5635a1 RP |
1212 | long offset; |
1213 | int size; | |
1214 | { | |
1215 | int val; | |
bd5635a1 | 1216 | |
61a7292f SG |
1217 | linetab_offset = offset; |
1218 | linetab_size = size; | |
1219 | ||
e09c5e26 JK |
1220 | free_linetab(); |
1221 | ||
61a7292f SG |
1222 | if (size == 0) |
1223 | return 0; | |
1224 | ||
7f4c8595 | 1225 | if (bfd_seek (abfd, offset, 0) < 0) |
bd5635a1 RP |
1226 | return -1; |
1227 | ||
e64fbb3a JG |
1228 | /* Allocate the desired table, plus a sentinel */ |
1229 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 | 1230 | |
7f4c8595 | 1231 | val = bfd_read (linetab, size, 1, abfd); |
bd5635a1 RP |
1232 | if (val != size) |
1233 | return -1; | |
1234 | ||
e64fbb3a | 1235 | /* Terminate it with an all-zero sentinel record */ |
4ed3a9ea | 1236 | memset (linetab + size, 0, local_linesz); |
e64fbb3a | 1237 | |
bd5635a1 RP |
1238 | return 0; |
1239 | } | |
1240 | ||
e09c5e26 JK |
1241 | static void |
1242 | free_linetab () | |
1243 | { | |
1244 | if (linetab) | |
1245 | free (linetab); | |
1246 | linetab = NULL; | |
1247 | } | |
1248 | ||
bd5635a1 RP |
1249 | #if !defined (L_LNNO32) |
1250 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1251 | #endif | |
1252 | ||
1253 | static void | |
7f4c8595 SS |
1254 | enter_linenos (file_offset, first_line, last_line, section_offsets) |
1255 | long file_offset; | |
1256 | register int first_line; | |
1257 | register int last_line; | |
1258 | struct section_offsets *section_offsets; | |
bd5635a1 RP |
1259 | { |
1260 | register char *rawptr; | |
dcc35536 | 1261 | struct internal_lineno lptr; |
bd5635a1 RP |
1262 | |
1263 | if (file_offset < linetab_offset) | |
1264 | { | |
51b80b00 | 1265 | complain (&lineno_complaint, file_offset); |
63989338 JG |
1266 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1267 | return; | |
1268 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1269 | } |
1270 | ||
1271 | rawptr = &linetab[file_offset - linetab_offset]; | |
1272 | ||
1273 | /* skip first line entry for each function */ | |
d8ce1326 | 1274 | rawptr += local_linesz; |
bd5635a1 RP |
1275 | /* line numbers start at one for the first line of the function */ |
1276 | first_line--; | |
1277 | ||
dcc35536 | 1278 | for (;;) { |
d8ce1326 JG |
1279 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1280 | rawptr += local_linesz; | |
e64fbb3a | 1281 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1282 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
7f4c8595 SS |
1283 | coff_record_line (first_line + L_LNNO32 (&lptr), |
1284 | lptr.l_addr.l_paddr | |
1285 | + ANOFFSET (section_offsets, SECT_OFF_TEXT)); | |
dcc35536 JG |
1286 | else |
1287 | break; | |
1288 | } | |
bd5635a1 RP |
1289 | } |
1290 | \f | |
bd5635a1 RP |
1291 | static void |
1292 | patch_type (type, real_type) | |
1293 | struct type *type; | |
1294 | struct type *real_type; | |
1295 | { | |
1296 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1297 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1298 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1299 | ||
1300 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1301 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
85f0a848 | 1302 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); |
bd5635a1 | 1303 | |
4ed3a9ea | 1304 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); |
bd5635a1 RP |
1305 | |
1306 | if (TYPE_NAME (real_target)) | |
1307 | { | |
1308 | if (TYPE_NAME (target)) | |
1309 | free (TYPE_NAME (target)); | |
58ae87f6 | 1310 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1311 | } |
1312 | } | |
1313 | ||
7e258d18 | 1314 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
f70be3e4 | 1315 | so that they can be used to print out opaque data structures properly. */ |
bd5635a1 | 1316 | |
f70be3e4 JG |
1317 | static void |
1318 | patch_opaque_types (s) | |
318bf84f | 1319 | struct symtab *s; |
318bf84f FF |
1320 | { |
1321 | register struct block *b; | |
1322 | register int i; | |
1323 | register struct symbol *real_sym; | |
1324 | ||
1325 | /* Go through the per-file symbols only */ | |
1326 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1327 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1328 | { |
318bf84f FF |
1329 | /* Find completed typedefs to use to fix opaque ones. |
1330 | Remove syms from the chain when their types are stored, | |
1331 | but search the whole chain, as there may be several syms | |
1332 | from different files with the same name. */ | |
1333 | real_sym = BLOCK_SYM (b, i); | |
1334 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1335 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1336 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1337 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1338 | { |
318bf84f FF |
1339 | register char *name = SYMBOL_NAME (real_sym); |
1340 | register int hash = hashname (name); | |
1341 | register struct symbol *sym, *prev; | |
1342 | ||
1343 | prev = 0; | |
1344 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1345 | { |
318bf84f | 1346 | if (name[0] == SYMBOL_NAME (sym)[0] && |
c653bc6d | 1347 | STREQ (name + 1, SYMBOL_NAME (sym) + 1)) |
bd5635a1 | 1348 | { |
318bf84f | 1349 | if (prev) |
bd5635a1 | 1350 | { |
318bf84f | 1351 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1352 | } |
1353 | else | |
1354 | { | |
318bf84f | 1355 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1356 | } |
318bf84f FF |
1357 | |
1358 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1359 | ||
1360 | if (prev) | |
1361 | { | |
1362 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | sym = opaque_type_chain[hash]; | |
1367 | } | |
1368 | } | |
1369 | else | |
1370 | { | |
1371 | prev = sym; | |
1372 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1373 | } |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | } | |
1378 | \f | |
bd5635a1 | 1379 | static struct symbol * |
7f4c8595 | 1380 | process_coff_symbol (cs, aux, section_offsets, objfile) |
bd5635a1 | 1381 | register struct coff_symbol *cs; |
dcc35536 | 1382 | register union internal_auxent *aux; |
7f4c8595 | 1383 | struct section_offsets *section_offsets; |
318bf84f | 1384 | struct objfile *objfile; |
bd5635a1 RP |
1385 | { |
1386 | register struct symbol *sym | |
c653bc6d JG |
1387 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, |
1388 | sizeof (struct symbol)); | |
bd5635a1 | 1389 | char *name; |
bd5635a1 | 1390 | |
4ed3a9ea | 1391 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 1392 | name = cs->c_name; |
de9bef49 | 1393 | name = EXTERNAL_NAME (name, objfile->obfd); |
c653bc6d JG |
1394 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, |
1395 | strlen (name)); | |
bd5635a1 RP |
1396 | |
1397 | /* default assumptions */ | |
1398 | SYMBOL_VALUE (sym) = cs->c_value; | |
1399 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
e7b5942b | 1400 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
bd5635a1 RP |
1401 | |
1402 | if (ISFCN (cs->c_type)) | |
1403 | { | |
7f4c8595 | 1404 | SYMBOL_VALUE (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
d8ce1326 JG |
1405 | #if 0 |
1406 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1407 | /* Generate a template for the type of this function. The | |
1408 | types of the arguments will be added as we read the symbol | |
1409 | table. */ | |
1410 | struct type *new = (struct type *) | |
318bf84f | 1411 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 | 1412 | |
4ed3a9ea | 1413 | memcpy (new, lookup_function_type (decode_function_type (cs, cs->c_type, aux)), |
51b57ded | 1414 | sizeof(struct type)); |
d8ce1326 JG |
1415 | SYMBOL_TYPE (sym) = new; |
1416 | in_function_type = SYMBOL_TYPE(sym); | |
1417 | #else | |
1418 | SYMBOL_TYPE(sym) = | |
1419 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1420 | #endif | |
1421 | ||
bd5635a1 RP |
1422 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1423 | if (cs->c_sclass == C_STAT) | |
c438b3af | 1424 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 | 1425 | else if (cs->c_sclass == C_EXT) |
c438b3af | 1426 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1427 | } |
1428 | else | |
1429 | { | |
1430 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1431 | switch (cs->c_sclass) | |
1432 | { | |
1433 | case C_NULL: | |
1434 | break; | |
1435 | ||
1436 | case C_AUTO: | |
1437 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
c438b3af | 1438 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1439 | break; |
1440 | ||
1441 | case C_EXT: | |
1442 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1443 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
7f4c8595 | 1444 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c438b3af | 1445 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1446 | break; |
1447 | ||
1448 | case C_STAT: | |
1449 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1450 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
7f4c8595 | 1451 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
bd5635a1 RP |
1452 | if (within_function) { |
1453 | /* Static symbol of local scope */ | |
c438b3af | 1454 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1455 | } |
1456 | else { | |
1457 | /* Static symbol at top level of file */ | |
c438b3af | 1458 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1459 | } |
1460 | break; | |
1461 | ||
d8ce1326 JG |
1462 | #ifdef C_GLBLREG /* AMD coff */ |
1463 | case C_GLBLREG: | |
1464 | #endif | |
bd5635a1 RP |
1465 | case C_REG: |
1466 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1467 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1468 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1469 | break; |
1470 | ||
1471 | case C_LABEL: | |
1472 | break; | |
1473 | ||
1474 | case C_ARG: | |
1475 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1476 | #if 0 |
7e258d18 | 1477 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1478 | /* Add parameter to function. */ |
1479 | add_param_to_type(&in_function_type,sym); | |
1480 | #endif | |
c438b3af | 1481 | add_symbol_to_list (sym, &local_symbols); |
e7b5942b JK |
1482 | #if !defined (BELIEVE_PCC_PROMOTION) |
1483 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
1484 | { | |
1485 | /* If PCC says a parameter is a short or a char, | |
1486 | aligned on an int boundary, realign it to the | |
1487 | "little end" of the int. */ | |
1488 | struct type *temptype; | |
1489 | temptype = lookup_fundamental_type (current_objfile, | |
1490 | FT_INTEGER); | |
1491 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1492 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
1493 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
1494 | { | |
1495 | SYMBOL_VALUE (sym) += | |
1496 | TYPE_LENGTH (temptype) | |
1497 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1498 | } | |
1499 | } | |
bd5635a1 RP |
1500 | #endif |
1501 | break; | |
1502 | ||
1503 | case C_REGPARM: | |
1504 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1505 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1506 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 | 1507 | #if !defined (BELIEVE_PCC_PROMOTION) |
7f4c8595 SS |
1508 | /* FIXME: This should retain the current type, since it's just |
1509 | a register value. gnu@adobe, 26Feb93 */ | |
1c95d7ab | 1510 | { |
7f4c8595 | 1511 | /* If PCC says a parameter is a short or a char, |
1c95d7ab JK |
1512 | it is really an int. */ |
1513 | struct type *temptype; | |
1514 | temptype = | |
1515 | lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1516 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1517 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1518 | { | |
1519 | SYMBOL_TYPE (sym) = | |
1520 | (TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1521 | ? lookup_fundamental_type (current_objfile, | |
1522 | FT_UNSIGNED_INTEGER) | |
1523 | : temptype); | |
1524 | } | |
7f4c8595 | 1525 | } |
bd5635a1 RP |
1526 | #endif |
1527 | break; | |
1528 | ||
1529 | case C_TPDEF: | |
1530 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1531 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1532 | ||
1533 | /* If type has no name, give it one */ | |
318bf84f | 1534 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1c95d7ab JK |
1535 | { |
1536 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1537 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1538 | { | |
1539 | /* If we are giving a name to a type such as "pointer to | |
1540 | foo" or "function returning foo", we better not set | |
1541 | the TYPE_NAME. If the program contains "typedef char | |
1542 | *caddr_t;", we don't want all variables of type char | |
1543 | * to print as caddr_t. This is not just a | |
1544 | consequence of GDB's type management; CC and GCC (at | |
1545 | least through version 2.4) both output variables of | |
1546 | either type char * or caddr_t with the type | |
1547 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1548 | compiler cleans this up it GDB is not ready for it | |
1549 | yet, but if it becomes ready we somehow need to | |
1550 | disable this check (without breaking the PCC/GCC2.4 | |
1551 | case). | |
1552 | ||
1553 | Sigh. | |
1554 | ||
1555 | Fortunately, this check seems not to be necessary | |
1556 | for anything except pointers or functions. */ | |
1557 | ; | |
1558 | } | |
1559 | else | |
1560 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
1561 | concat (SYMBOL_NAME (sym), NULL); | |
1562 | } | |
7f4c8595 | 1563 | #ifdef CXUX_TARGET |
e1118f15 | 1564 | /* Ignore vendor section for Harris CX/UX targets. */ |
7f4c8595 SS |
1565 | else if (cs->c_name[0] == '$') |
1566 | break; | |
1567 | #endif /* CXUX_TARGET */ | |
bd5635a1 RP |
1568 | |
1569 | /* Keep track of any type which points to empty structured type, | |
f70be3e4 JG |
1570 | so it can be filled from a definition from another file. A |
1571 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1572 | empty structured type, though; the forward references | |
1573 | work themselves out via the magic of coff_lookup_type. */ | |
bd5635a1 | 1574 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && |
f70be3e4 JG |
1575 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && |
1576 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1577 | TYPE_CODE_UNDEF) | |
bd5635a1 RP |
1578 | { |
1579 | register int i = hashname (SYMBOL_NAME (sym)); | |
1580 | ||
1581 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1582 | opaque_type_chain[i] = sym; | |
1583 | } | |
c438b3af | 1584 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1585 | break; |
1586 | ||
1587 | case C_STRTAG: | |
1588 | case C_UNTAG: | |
1589 | case C_ENTAG: | |
1590 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1591 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
e09c5e26 JK |
1592 | |
1593 | /* Some compilers try to be helpful by inventing "fake" | |
1594 | names for anonymous enums, structures, and unions, like | |
1595 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1596 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
1597 | if (SYMBOL_NAME(sym) != NULL | |
1598 | && *SYMBOL_NAME(sym) != '~' | |
1599 | && *SYMBOL_NAME(sym) != '.') | |
1600 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = | |
1601 | concat (SYMBOL_NAME (sym), NULL); | |
1602 | ||
c438b3af | 1603 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1604 | break; |
1605 | ||
1606 | default: | |
1607 | break; | |
1608 | } | |
1609 | } | |
1610 | return sym; | |
1611 | } | |
1612 | \f | |
7f4c8595 | 1613 | /* Decode a coff type specifier; return the type that is meant. */ |
bd5635a1 | 1614 | |
7f4c8595 | 1615 | static struct type * |
bd5635a1 RP |
1616 | decode_type (cs, c_type, aux) |
1617 | register struct coff_symbol *cs; | |
1618 | unsigned int c_type; | |
dcc35536 | 1619 | register union internal_auxent *aux; |
bd5635a1 RP |
1620 | { |
1621 | register struct type *type = 0; | |
1622 | unsigned int new_c_type; | |
1623 | ||
1624 | if (c_type & ~N_BTMASK) | |
1625 | { | |
1626 | new_c_type = DECREF (c_type); | |
1627 | if (ISPTR (c_type)) | |
1628 | { | |
1629 | type = decode_type (cs, new_c_type, aux); | |
1630 | type = lookup_pointer_type (type); | |
1631 | } | |
1632 | else if (ISFCN (c_type)) | |
1633 | { | |
1634 | type = decode_type (cs, new_c_type, aux); | |
1635 | type = lookup_function_type (type); | |
1636 | } | |
1637 | else if (ISARY (c_type)) | |
1638 | { | |
1639 | int i, n; | |
1640 | register unsigned short *dim; | |
a8a69e63 | 1641 | struct type *base_type, *index_type, *range_type; |
bd5635a1 RP |
1642 | |
1643 | /* Define an array type. */ | |
1644 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1645 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1646 | cs->c_naux = 0; |
bd5635a1 RP |
1647 | |
1648 | /* shift the indices down */ | |
1649 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1650 | i = 1; | |
1651 | n = dim[0]; | |
1652 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1653 | *dim = *(dim + 1); | |
1654 | *dim = 0; | |
1655 | ||
bd5635a1 | 1656 | base_type = decode_type (cs, new_c_type, aux); |
85f0a848 | 1657 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); |
a8a69e63 FF |
1658 | range_type = |
1659 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1660 | type = | |
1661 | create_array_type ((struct type *) NULL, base_type, range_type); | |
bd5635a1 RP |
1662 | } |
1663 | return type; | |
1664 | } | |
1665 | ||
f70be3e4 JG |
1666 | /* Reference to existing type. This only occurs with the |
1667 | struct, union, and enum types. EPI a29k coff | |
1668 | fakes us out by producing aux entries with a nonzero | |
1669 | x_tagndx for definitions of structs, unions, and enums, so we | |
117f631e ILT |
1670 | have to check the c_sclass field. SCO 3.2v4 cc gets confused |
1671 | with pointers to pointers to defined structs, and generates | |
1672 | negative x_tagndx fields. */ | |
e64fbb3a | 1673 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1674 | { |
117f631e ILT |
1675 | if (cs->c_sclass != C_STRTAG |
1676 | && cs->c_sclass != C_UNTAG | |
1677 | && cs->c_sclass != C_ENTAG | |
1678 | && aux->x_sym.x_tagndx.l >= 0) | |
f70be3e4 JG |
1679 | { |
1680 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1681 | return type; | |
7f4c8595 SS |
1682 | } |
1683 | else | |
1684 | { | |
f70be3e4 JG |
1685 | complain (&tagndx_bad_complaint, cs->c_name); |
1686 | /* And fall through to decode_base_type... */ | |
1687 | } | |
bd5635a1 RP |
1688 | } |
1689 | ||
1690 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1691 | } | |
1692 | ||
1693 | /* Decode a coff type specifier for function definition; | |
1694 | return the type that the function returns. */ | |
1695 | ||
7f4c8595 | 1696 | static struct type * |
bd5635a1 RP |
1697 | decode_function_type (cs, c_type, aux) |
1698 | register struct coff_symbol *cs; | |
1699 | unsigned int c_type; | |
dcc35536 | 1700 | register union internal_auxent *aux; |
bd5635a1 | 1701 | { |
6988f5c0 | 1702 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1703 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1704 | |
1705 | return decode_type (cs, DECREF (c_type), aux); | |
1706 | } | |
1707 | \f | |
1708 | /* basic C types */ | |
1709 | ||
7f4c8595 | 1710 | static struct type * |
bd5635a1 RP |
1711 | decode_base_type (cs, c_type, aux) |
1712 | register struct coff_symbol *cs; | |
1713 | unsigned int c_type; | |
dcc35536 | 1714 | register union internal_auxent *aux; |
bd5635a1 RP |
1715 | { |
1716 | struct type *type; | |
1717 | ||
1718 | switch (c_type) | |
1719 | { | |
1720 | case T_NULL: | |
1721 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1722 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1723 | |
8aa13b87 JK |
1724 | #if 0 |
1725 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1726 | #ifdef T_ARG |
1727 | case T_ARG: | |
1728 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1729 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1730 | #endif |
8aa13b87 | 1731 | #endif /* 0 */ |
bd5635a1 RP |
1732 | |
1733 | #ifdef T_VOID | |
1734 | case T_VOID: | |
1735 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1736 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1737 | #endif |
1738 | ||
1739 | case T_CHAR: | |
318bf84f | 1740 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1741 | |
1742 | case T_SHORT: | |
318bf84f | 1743 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1744 | |
1745 | case T_INT: | |
318bf84f | 1746 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1747 | |
1748 | case T_LONG: | |
318bf84f | 1749 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1750 | |
1751 | case T_FLOAT: | |
318bf84f | 1752 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1753 | |
1754 | case T_DOUBLE: | |
318bf84f | 1755 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1756 | |
1757 | case T_STRUCT: | |
e64fbb3a | 1758 | if (cs->c_naux != 1) |
bd5635a1 RP |
1759 | { |
1760 | /* anonymous structure type */ | |
1761 | type = coff_alloc_type (cs->c_symnum); | |
1762 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
e09c5e26 JK |
1763 | TYPE_NAME (type) = NULL; |
1764 | /* This used to set the tag to "<opaque>". But I think setting it | |
1765 | to NULL is right, and the printing code can print it as | |
1766 | "struct {...}". */ | |
1767 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1768 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1769 | TYPE_LENGTH (type) = 0; |
1770 | TYPE_FIELDS (type) = 0; | |
1771 | TYPE_NFIELDS (type) = 0; | |
1772 | } | |
1773 | else | |
1774 | { | |
318bf84f | 1775 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1776 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1777 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1778 | } |
1779 | return type; | |
1780 | ||
1781 | case T_UNION: | |
e64fbb3a | 1782 | if (cs->c_naux != 1) |
bd5635a1 RP |
1783 | { |
1784 | /* anonymous union type */ | |
1785 | type = coff_alloc_type (cs->c_symnum); | |
e09c5e26 JK |
1786 | TYPE_NAME (type) = NULL; |
1787 | /* This used to set the tag to "<opaque>". But I think setting it | |
1788 | to NULL is right, and the printing code can print it as | |
1789 | "union {...}". */ | |
1790 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1791 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1792 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1793 | TYPE_FIELDS (type) = 0; |
1794 | TYPE_NFIELDS (type) = 0; | |
1795 | } | |
1796 | else | |
1797 | { | |
318bf84f | 1798 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1799 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1800 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1801 | } |
1802 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1803 | return type; | |
1804 | ||
1805 | case T_ENUM: | |
e09c5e26 JK |
1806 | if (cs->c_naux != 1) |
1807 | { | |
1808 | /* anonymous enum type */ | |
1809 | type = coff_alloc_type (cs->c_symnum); | |
1810 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1811 | TYPE_NAME (type) = NULL; | |
1812 | /* This used to set the tag to "<opaque>". But I think setting it | |
1813 | to NULL is right, and the printing code can print it as | |
1814 | "enum {...}". */ | |
1815 | TYPE_TAG_NAME (type) = NULL; | |
1816 | TYPE_LENGTH (type) = 0; | |
1817 | TYPE_FIELDS (type) = 0; | |
1818 | TYPE_NFIELDS(type) = 0; | |
1819 | } | |
1820 | else | |
1821 | { | |
1822 | type = coff_read_enum_type (cs->c_symnum, | |
1823 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1824 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1825 | } | |
1826 | return type; | |
bd5635a1 RP |
1827 | |
1828 | case T_MOE: | |
1829 | /* shouldn't show up here */ | |
1830 | break; | |
1831 | ||
1832 | case T_UCHAR: | |
318bf84f | 1833 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1834 | |
1835 | case T_USHORT: | |
318bf84f | 1836 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1837 | |
1838 | case T_UINT: | |
318bf84f | 1839 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1840 | |
1841 | case T_ULONG: | |
318bf84f | 1842 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1843 | } |
7e258d18 | 1844 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1845 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1846 | } |
1847 | \f | |
1848 | /* This page contains subroutines of read_type. */ | |
1849 | ||
7f4c8595 SS |
1850 | /* Read the description of a structure (or union type) and return an |
1851 | object describing the type. */ | |
bd5635a1 RP |
1852 | |
1853 | static struct type * | |
318bf84f | 1854 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1855 | int index; |
1856 | int length; | |
1857 | int lastsym; | |
1858 | { | |
1859 | struct nextfield | |
1860 | { | |
1861 | struct nextfield *next; | |
1862 | struct field field; | |
1863 | }; | |
1864 | ||
1865 | register struct type *type; | |
1866 | register struct nextfield *list = 0; | |
1867 | struct nextfield *new; | |
1868 | int nfields = 0; | |
1869 | register int n; | |
1870 | char *name; | |
bd5635a1 RP |
1871 | struct coff_symbol member_sym; |
1872 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1873 | struct internal_syment sub_sym; |
1874 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1875 | int done = 0; |
1876 | ||
1877 | type = coff_alloc_type (index); | |
1878 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1879 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1880 | TYPE_LENGTH (type) = length; |
1881 | ||
1882 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1883 | { | |
1884 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1885 | name = ms->c_name; | |
de9bef49 | 1886 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1887 | |
1888 | switch (ms->c_sclass) | |
1889 | { | |
1890 | case C_MOS: | |
1891 | case C_MOU: | |
1892 | ||
1893 | /* Get space to record the next field's data. */ | |
1894 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1895 | new->next = list; | |
1896 | list = new; | |
1897 | ||
1898 | /* Save the data. */ | |
ab93997d JK |
1899 | list->field.name = |
1900 | obsavestring (name, | |
1901 | strlen (name), | |
1902 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
1903 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); |
1904 | list->field.bitpos = 8 * ms->c_value; | |
1905 | list->field.bitsize = 0; | |
1906 | nfields++; | |
1907 | break; | |
1908 | ||
1909 | case C_FIELD: | |
1910 | ||
1911 | /* Get space to record the next field's data. */ | |
1912 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1913 | new->next = list; | |
1914 | list = new; | |
1915 | ||
1916 | /* Save the data. */ | |
ab93997d JK |
1917 | list->field.name = |
1918 | obsavestring (name, | |
1919 | strlen (name), | |
1920 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
1921 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); |
1922 | list->field.bitpos = ms->c_value; | |
1923 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
1924 | nfields++; | |
1925 | break; | |
1926 | ||
1927 | case C_EOS: | |
1928 | done = 1; | |
1929 | break; | |
1930 | } | |
1931 | } | |
1932 | /* Now create the vector of fields, and record how big it is. */ | |
1933 | ||
1934 | TYPE_NFIELDS (type) = nfields; | |
1935 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1936 | TYPE_ALLOC (type, sizeof (struct field) * nfields); |
bd5635a1 RP |
1937 | |
1938 | /* Copy the saved-up fields into the field vector. */ | |
1939 | ||
1940 | for (n = nfields; list; list = list->next) | |
1941 | TYPE_FIELD (type, --n) = list->field; | |
1942 | ||
1943 | return type; | |
1944 | } | |
1945 | \f | |
1946 | /* Read a definition of an enumeration type, | |
1947 | and create and return a suitable type object. | |
1948 | Also defines the symbols that represent the values of the type. */ | |
1949 | ||
61a7292f | 1950 | /* ARGSUSED */ |
bd5635a1 | 1951 | static struct type * |
318bf84f | 1952 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
1953 | int index; |
1954 | int length; | |
1955 | int lastsym; | |
1956 | { | |
1957 | register struct symbol *sym; | |
1958 | register struct type *type; | |
1959 | int nsyms = 0; | |
1960 | int done = 0; | |
c438b3af | 1961 | struct pending **symlist; |
bd5635a1 RP |
1962 | struct coff_symbol member_sym; |
1963 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1964 | struct internal_syment sub_sym; |
1965 | union internal_auxent sub_aux; | |
c438b3af JK |
1966 | struct pending *osyms, *syms; |
1967 | int o_nsyms; | |
bd5635a1 RP |
1968 | register int n; |
1969 | char *name; | |
bd5635a1 RP |
1970 | |
1971 | type = coff_alloc_type (index); | |
1972 | if (within_function) | |
c438b3af | 1973 | symlist = &local_symbols; |
bd5635a1 | 1974 | else |
c438b3af | 1975 | symlist = &file_symbols; |
bd5635a1 | 1976 | osyms = *symlist; |
c438b3af | 1977 | o_nsyms = osyms ? osyms->nsyms : 0; |
bd5635a1 RP |
1978 | |
1979 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1980 | { | |
1981 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1982 | name = ms->c_name; | |
de9bef49 | 1983 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1984 | |
1985 | switch (ms->c_sclass) | |
1986 | { | |
1987 | case C_MOE: | |
ab93997d JK |
1988 | sym = (struct symbol *) obstack_alloc |
1989 | (¤t_objfile->symbol_obstack, | |
1990 | sizeof (struct symbol)); | |
4ed3a9ea | 1991 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 1992 | |
ab93997d JK |
1993 | SYMBOL_NAME (sym) = |
1994 | obsavestring (name, strlen (name), | |
1995 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
1996 | SYMBOL_CLASS (sym) = LOC_CONST; |
1997 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1998 | SYMBOL_VALUE (sym) = ms->c_value; | |
c438b3af | 1999 | add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
2000 | nsyms++; |
2001 | break; | |
2002 | ||
2003 | case C_EOS: | |
2004 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2005 | up the count of how many symbols to read. So stop | |
2006 | on .eos. */ | |
2007 | done = 1; | |
2008 | break; | |
2009 | } | |
2010 | } | |
2011 | ||
2012 | /* Now fill in the fields of the type-structure. */ | |
2013 | ||
f2c365f5 | 2014 | if (length > 0) |
7f4c8595 | 2015 | TYPE_LENGTH (type) = length; |
f2c365f5 | 2016 | else |
7f4c8595 | 2017 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ |
bd5635a1 RP |
2018 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2019 | TYPE_NFIELDS (type) = nsyms; | |
2020 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 2021 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); |
bd5635a1 RP |
2022 | |
2023 | /* Find the symbols for the values and put them into the type. | |
2024 | The symbols can be found in the symlist that we put them on | |
2025 | to cause them to be defined. osyms contains the old value | |
2026 | of that symlist; everything up to there was defined by us. */ | |
c438b3af JK |
2027 | /* Note that we preserve the order of the enum constants, so |
2028 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2029 | FOO, not LAST_THING. */ | |
bd5635a1 | 2030 | |
c438b3af | 2031 | for (syms = *symlist, n = 0; syms; syms = syms->next) |
bd5635a1 | 2032 | { |
c438b3af | 2033 | int j = 0; |
7f4c8595 | 2034 | |
c438b3af JK |
2035 | if (syms == osyms) |
2036 | j = o_nsyms; | |
2037 | for (; j < syms->nsyms; j++,n++) | |
2038 | { | |
2039 | struct symbol *xsym = syms->symbol[j]; | |
2040 | SYMBOL_TYPE (xsym) = type; | |
2041 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2042 | TYPE_FIELD_VALUE (type, n) = 0; | |
2043 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2044 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2045 | } | |
2046 | if (syms == osyms) | |
2047 | break; | |
bd5635a1 | 2048 | } |
c438b3af | 2049 | |
bd5635a1 RP |
2050 | return type; |
2051 | } | |
2052 | ||
85f0a848 FF |
2053 | struct section_offsets * |
2054 | coff_symfile_offsets (objfile, addr) | |
2055 | struct objfile *objfile; | |
2056 | CORE_ADDR addr; | |
2057 | { | |
b5b186a2 SS |
2058 | struct section_offsets *section_offsets; |
2059 | int i; | |
4d57c599 JK |
2060 | |
2061 | objfile->num_sections = SECT_OFF_MAX; | |
b5b186a2 SS |
2062 | section_offsets = (struct section_offsets *) |
2063 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2064 | sizeof (struct section_offsets) |
2065 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
b5b186a2 SS |
2066 | |
2067 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2068 | ANOFFSET (section_offsets, i) = addr; | |
2069 | ||
2070 | return section_offsets; | |
85f0a848 FF |
2071 | } |
2072 | ||
7f4c8595 | 2073 | /* Register our ability to parse symbols for coff BFD files. */ |
bd5635a1 RP |
2074 | |
2075 | static struct sym_fns coff_sym_fns = | |
2076 | { | |
0eed42de | 2077 | bfd_target_coff_flavour, |
80d68b1d FF |
2078 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2079 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2080 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2081 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
85f0a848 | 2082 | coff_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
80d68b1d | 2083 | NULL /* next: pointer to next struct sym_fns */ |
bd5635a1 RP |
2084 | }; |
2085 | ||
2086 | void | |
2087 | _initialize_coffread () | |
2088 | { | |
7f4c8595 | 2089 | add_symtab_fns (&coff_sym_fns); |
bd5635a1 | 2090 | } |