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" | |
3a470454 | 41 | #include "target.h" |
27ad511f | 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 | ||
7f4c8595 SS |
64 | /* Convert from an sdb register number to an internal gdb register number. |
65 | This should be defined in tm.h, if REGISTER_NAMES is not set up | |
66 | to map one to one onto the sdb register numbers. */ | |
67 | ||
d8ce1326 JG |
68 | #ifndef SDB_REG_TO_REGNUM |
69 | # define SDB_REG_TO_REGNUM(value) (value) | |
70 | #endif | |
71 | ||
bd5635a1 RP |
72 | /* Core address of start and end of text of current source file. |
73 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
74 | ||
7f4c8595 SS |
75 | static CORE_ADDR current_source_start_addr; |
76 | static CORE_ADDR current_source_end_addr; | |
bd5635a1 | 77 | |
bd5635a1 RP |
78 | /* The addresses of the symbol table stream and number of symbols |
79 | of the object file we are reading (as copied into core). */ | |
80 | ||
7f4c8595 | 81 | static bfd *nlist_bfd_global; |
bd5635a1 RP |
82 | static int nlist_nsyms_global; |
83 | ||
bd5635a1 RP |
84 | /* Vector of line number information. */ |
85 | ||
86 | static struct linetable *line_vector; | |
87 | ||
88 | /* Index of next entry to go in line_vector_index. */ | |
89 | ||
90 | static int line_vector_index; | |
91 | ||
92 | /* Last line number recorded in the line vector. */ | |
93 | ||
94 | static int prev_line_number; | |
95 | ||
96 | /* Number of elements allocated for line_vector currently. */ | |
97 | ||
98 | static int line_vector_length; | |
99 | ||
d8ce1326 JG |
100 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
101 | ||
102 | static char *temp_sym; | |
103 | static char *temp_aux; | |
104 | ||
105 | /* Local variables that hold the shift and mask values for the | |
106 | COFF file that we are currently reading. These come back to us | |
107 | from BFD, and are referenced by their macro names, as well as | |
108 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
7f4c8595 | 109 | macros from include/coff/internal.h . */ |
d8ce1326 JG |
110 | |
111 | static unsigned local_n_btmask; | |
112 | static unsigned local_n_btshft; | |
113 | static unsigned local_n_tmask; | |
114 | static unsigned local_n_tshift; | |
115 | ||
116 | #define N_BTMASK local_n_btmask | |
117 | #define N_BTSHFT local_n_btshft | |
118 | #define N_TMASK local_n_tmask | |
119 | #define N_TSHIFT local_n_tshift | |
120 | ||
121 | /* Local variables that hold the sizes in the file of various COFF structures. | |
122 | (We only need to know this to read them from the file -- BFD will then | |
123 | translate the data in them, into `internal_xxx' structs in the right | |
124 | byte order, alignment, etc.) */ | |
125 | ||
126 | static unsigned local_linesz; | |
127 | static unsigned local_symesz; | |
128 | static unsigned local_auxesz; | |
129 | ||
bd5635a1 RP |
130 | /* Chain of typedefs of pointers to empty struct/union types. |
131 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
132 | ||
bd5635a1 RP |
133 | static struct symbol *opaque_type_chain[HASHSIZE]; |
134 | ||
d8ce1326 JG |
135 | #if 0 |
136 | /* The type of the function we are currently reading in. This is | |
137 | used by define_symbol to record the type of arguments to a function. */ | |
138 | ||
139 | struct type *in_function_type; | |
140 | #endif | |
141 | ||
bd5635a1 RP |
142 | /* Complaints about various problems in the file being read */ |
143 | ||
144 | struct complaint ef_complaint = | |
145 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
146 | ||
7e258d18 PB |
147 | struct complaint bf_no_aux_complaint = |
148 | {"`.bf' symbol %d has no aux entry", 0, 0}; | |
149 | ||
150 | struct complaint ef_no_aux_complaint = | |
151 | {"`.ef' symbol %d has no aux entry", 0, 0}; | |
e64fbb3a | 152 | |
63989338 JG |
153 | struct complaint lineno_complaint = |
154 | {"Line number pointer %d lower than start of line numbers", 0, 0}; | |
155 | ||
7e258d18 PB |
156 | struct complaint unexpected_type_complaint = |
157 | {"Unexpected type for symbol %s", 0, 0}; | |
158 | ||
159 | struct complaint bad_sclass_complaint = | |
160 | {"Bad n_sclass for symbol %s", 0, 0}; | |
318bf84f | 161 | |
f70be3e4 JG |
162 | struct complaint misordered_blocks_complaint = |
163 | {"Blocks out of order at address %x", 0, 0}; | |
164 | ||
165 | struct complaint tagndx_bad_complaint = | |
166 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; | |
167 | ||
de9bef49 JG |
168 | struct complaint eb_complaint = |
169 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
170 | ||
318bf84f FF |
171 | /* Simplified internal version of coff symbol table information */ |
172 | ||
173 | struct coff_symbol { | |
174 | char *c_name; | |
175 | int c_symnum; /* symbol number of this entry */ | |
176 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
177 | long c_value; | |
178 | int c_sclass; | |
179 | int c_secnum; | |
180 | unsigned int c_type; | |
181 | }; | |
182 | ||
7f4c8595 | 183 | static struct type *coff_read_struct_type PARAMS ((int, int, int)); |
318bf84f | 184 | |
7f4c8595 SS |
185 | static struct type *decode_base_type PARAMS ((struct coff_symbol *, |
186 | unsigned int, | |
187 | union internal_auxent *)); | |
318bf84f | 188 | |
7f4c8595 SS |
189 | static struct type *decode_type PARAMS ((struct coff_symbol *, unsigned int, |
190 | union internal_auxent *)); | |
318bf84f | 191 | |
7f4c8595 SS |
192 | static struct type *decode_function_type PARAMS ((struct coff_symbol *, |
193 | unsigned int, | |
194 | union internal_auxent *)); | |
318bf84f | 195 | |
7f4c8595 | 196 | static struct type *coff_read_enum_type PARAMS ((int, int, int)); |
318bf84f | 197 | |
7f4c8595 SS |
198 | static struct symbol *process_coff_symbol PARAMS ((struct coff_symbol *, |
199 | union internal_auxent *, | |
200 | struct section_offsets *, | |
201 | struct objfile *)); | |
318bf84f | 202 | |
7f4c8595 | 203 | static void patch_opaque_types PARAMS ((struct symtab *)); |
318bf84f | 204 | |
7f4c8595 | 205 | static void patch_type PARAMS ((struct type *, struct type *)); |
318bf84f | 206 | |
7f4c8595 | 207 | static void enter_linenos PARAMS ((long, int, int, struct section_offsets *)); |
318bf84f | 208 | |
7f4c8595 | 209 | static void free_linetab PARAMS ((void)); |
e09c5e26 | 210 | |
7f4c8595 | 211 | static int init_lineno PARAMS ((bfd *, long, int)); |
318bf84f | 212 | |
7f4c8595 | 213 | static char *getsymname PARAMS ((struct internal_syment *)); |
318bf84f | 214 | |
7f4c8595 | 215 | static void free_stringtab PARAMS ((void)); |
318bf84f | 216 | |
7f4c8595 | 217 | static int init_stringtab PARAMS ((bfd *, long)); |
318bf84f | 218 | |
7f4c8595 SS |
219 | static void read_one_sym PARAMS ((struct coff_symbol *, |
220 | struct internal_syment *, | |
221 | union internal_auxent *)); | |
318bf84f | 222 | |
7f4c8595 SS |
223 | static void coff_symtab_read PARAMS ((long, int, struct section_offsets *, |
224 | struct objfile *)); | |
318bf84f | 225 | |
7f4c8595 | 226 | static void find_linenos PARAMS ((bfd *, sec_ptr, PTR)); |
318bf84f | 227 | |
7f4c8595 | 228 | static void coff_symfile_init PARAMS ((struct objfile *)); |
318bf84f | 229 | |
7f4c8595 | 230 | static void coff_new_init PARAMS ((struct objfile *)); |
318bf84f | 231 | |
7f4c8595 SS |
232 | static void coff_symfile_read PARAMS ((struct objfile *, |
233 | struct section_offsets *, int)); | |
80d68b1d | 234 | |
7f4c8595 | 235 | static void coff_symfile_finish PARAMS ((struct objfile *)); |
318bf84f | 236 | |
7f4c8595 SS |
237 | static void record_minimal_symbol PARAMS ((char *, CORE_ADDR, |
238 | enum minimal_symbol_type, | |
239 | struct objfile *)); | |
318bf84f | 240 | |
7f4c8595 | 241 | static void coff_end_symtab PARAMS ((struct objfile *)); |
318bf84f | 242 | |
7f4c8595 | 243 | static void complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int)); |
318bf84f | 244 | |
7f4c8595 | 245 | static void coff_start_symtab PARAMS ((void)); |
318bf84f | 246 | |
7f4c8595 | 247 | static void coff_record_line PARAMS ((int, CORE_ADDR)); |
318bf84f | 248 | |
7f4c8595 | 249 | static struct type *coff_alloc_type PARAMS ((int)); |
318bf84f | 250 | |
7f4c8595 | 251 | static struct type **coff_lookup_type PARAMS ((int)); |
318bf84f | 252 | |
7f4c8595 | 253 | static void coff_locate_sections PARAMS ((bfd *, asection *, PTR)); |
bd5635a1 | 254 | \f |
b5b186a2 SS |
255 | /* We are called once per section from coff_symfile_read. We |
256 | need to examine each section we are passed, check to see | |
257 | if it is something we are interested in processing, and | |
258 | if so, stash away some access information for the section. | |
259 | ||
0ccbaadc | 260 | FIXME: The section names should not be hardwired strings (what |
8f6960c9 JK |
261 | should they be? I don't think most object file formats have enough |
262 | section flags to specify what kind of debug section it is | |
263 | -kingdon). */ | |
b5b186a2 SS |
264 | |
265 | static void | |
266 | coff_locate_sections (ignore_abfd, sectp, csip) | |
267 | bfd *ignore_abfd; | |
268 | asection *sectp; | |
269 | PTR csip; | |
270 | { | |
271 | register struct coff_symfile_info *csi; | |
272 | ||
273 | csi = (struct coff_symfile_info *) csip; | |
274 | if (STREQ (sectp->name, ".stab")) | |
275 | { | |
276 | csi->stabsect = sectp; | |
277 | } | |
278 | else if (STREQ (sectp->name, ".stabstr")) | |
279 | { | |
280 | csi->stabstrsect = sectp; | |
281 | } | |
282 | else if (STREQ (sectp->name, ".stab.index")) | |
283 | { | |
284 | csi->stabindexsect = sectp; | |
285 | } | |
286 | } | |
287 | ||
e7b5942b JK |
288 | /* Return the section_offsets* that CS points to. */ |
289 | static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *)); | |
290 | ||
291 | struct find_targ_sec_arg { | |
292 | int targ_index; | |
293 | int *resultp; | |
294 | }; | |
295 | ||
296 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
297 | ||
298 | static void find_targ_sec (abfd, sect, obj) | |
299 | bfd *abfd; | |
300 | asection *sect; | |
301 | PTR obj; | |
302 | { | |
303 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
304 | if (sect->target_index == args->targ_index) | |
305 | { | |
306 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
307 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
308 | *args->resultp = SECT_OFF_TEXT; | |
309 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
310 | *args->resultp = SECT_OFF_DATA; | |
311 | else | |
312 | *args->resultp = SECT_OFF_BSS; | |
313 | } | |
314 | } | |
315 | ||
316 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
317 | static int | |
318 | cs_to_section (cs, objfile) | |
319 | struct coff_symbol *cs; | |
320 | struct objfile *objfile; | |
321 | { | |
322 | int off = SECT_OFF_TEXT; | |
323 | struct find_targ_sec_arg args; | |
324 | args.targ_index = cs->c_secnum; | |
325 | args.resultp = &off; | |
326 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
327 | return off; | |
328 | } | |
329 | ||
bd5635a1 RP |
330 | /* Look up a coff type-number index. Return the address of the slot |
331 | where the type for that index is stored. | |
332 | The type-number is in INDEX. | |
333 | ||
334 | This can be used for finding the type associated with that index | |
335 | or for associating a new type with the index. */ | |
336 | ||
337 | static struct type ** | |
338 | coff_lookup_type (index) | |
339 | register int index; | |
340 | { | |
341 | if (index >= type_vector_length) | |
342 | { | |
343 | int old_vector_length = type_vector_length; | |
344 | ||
345 | type_vector_length *= 2; | |
7f4c8595 | 346 | if (index /* is still */ >= type_vector_length) |
bd5635a1 | 347 | type_vector_length = index * 2; |
7f4c8595 | 348 | |
159a075e | 349 | type_vector = (struct type **) |
318bf84f FF |
350 | xrealloc ((char *) type_vector, |
351 | type_vector_length * sizeof (struct type *)); | |
4ed3a9ea | 352 | memset (&type_vector[old_vector_length], 0, |
bd5635a1 RP |
353 | (type_vector_length - old_vector_length) * sizeof(struct type *)); |
354 | } | |
159a075e | 355 | return &type_vector[index]; |
bd5635a1 RP |
356 | } |
357 | ||
358 | /* Make sure there is a type allocated for type number index | |
359 | and return the type object. | |
360 | This can create an empty (zeroed) type object. */ | |
361 | ||
362 | static struct type * | |
363 | coff_alloc_type (index) | |
364 | int index; | |
365 | { | |
366 | register struct type **type_addr = coff_lookup_type (index); | |
367 | register struct type *type = *type_addr; | |
368 | ||
369 | /* If we are referring to a type not known at all yet, | |
370 | allocate an empty type for it. | |
371 | We will fill it in later if we find out how. */ | |
318bf84f | 372 | if (type == NULL) |
bd5635a1 | 373 | { |
318bf84f | 374 | type = alloc_type (current_objfile); |
bd5635a1 RP |
375 | *type_addr = type; |
376 | } | |
377 | return type; | |
378 | } | |
379 | \f | |
0ccbaadc JK |
380 | /* Record a line number entry for line LINE at address PC. |
381 | FIXME: Use record_line instead. */ | |
382 | ||
e1ce8aa5 | 383 | static void |
318bf84f | 384 | coff_record_line (line, pc) |
bd5635a1 RP |
385 | int line; |
386 | CORE_ADDR pc; | |
387 | { | |
388 | struct linetable_entry *e; | |
389 | /* Make sure line vector is big enough. */ | |
390 | ||
391 | if (line_vector_index + 2 >= line_vector_length) | |
392 | { | |
393 | line_vector_length *= 2; | |
394 | line_vector = (struct linetable *) | |
318bf84f | 395 | xrealloc ((char *) line_vector, sizeof (struct linetable) |
bd5635a1 RP |
396 | + (line_vector_length |
397 | * sizeof (struct linetable_entry))); | |
398 | } | |
399 | ||
400 | e = line_vector->item + line_vector_index++; | |
401 | e->line = line; e->pc = pc; | |
402 | } | |
403 | \f | |
404 | /* Start a new symtab for a new source file. | |
405 | This is called when a COFF ".file" symbol is seen; | |
406 | it indicates the start of data for one original source file. */ | |
407 | ||
408 | static void | |
318bf84f | 409 | coff_start_symtab () |
bd5635a1 | 410 | { |
c438b3af | 411 | start_symtab ( |
ab93997d JK |
412 | /* We fill in the filename later. start_symtab puts |
413 | this pointer into last_source_file and we put it in | |
414 | subfiles->name, which end_symtab frees; that's why | |
415 | it must be malloc'd. */ | |
3ffb74b9 | 416 | savestring ("", 0), |
c438b3af JK |
417 | /* We never know the directory name for COFF. */ |
418 | NULL, | |
419 | /* The start address is irrelevant, since we set | |
420 | last_source_start_addr in coff_end_symtab. */ | |
421 | 0); | |
bd5635a1 | 422 | |
cadbb07a | 423 | /* Initialize the source file line number information for this file. */ |
bd5635a1 | 424 | |
cadbb07a | 425 | if (line_vector) /* Unlikely, but maybe possible? */ |
f70be3e4 | 426 | free ((PTR)line_vector); |
bd5635a1 RP |
427 | line_vector_index = 0; |
428 | line_vector_length = 1000; | |
429 | prev_line_number = -2; /* Force first line number to be explicit */ | |
430 | line_vector = (struct linetable *) | |
431 | xmalloc (sizeof (struct linetable) | |
432 | + line_vector_length * sizeof (struct linetable_entry)); | |
433 | } | |
434 | ||
435 | /* Save the vital information from when starting to read a file, | |
436 | for use when closing off the current file. | |
437 | NAME is the file name the symbols came from, START_ADDR is the first | |
438 | text address for the file, and SIZE is the number of bytes of text. */ | |
439 | ||
440 | static void | |
441 | complete_symtab (name, start_addr, size) | |
442 | char *name; | |
443 | CORE_ADDR start_addr; | |
444 | unsigned int size; | |
445 | { | |
ab93997d JK |
446 | if (last_source_file != NULL) |
447 | free (last_source_file); | |
bd5635a1 | 448 | last_source_file = savestring (name, strlen (name)); |
7f4c8595 SS |
449 | current_source_start_addr = start_addr; |
450 | current_source_end_addr = start_addr + size; | |
bd5635a1 | 451 | |
7f4c8595 SS |
452 | if (current_objfile -> ei.entry_point >= current_source_start_addr && |
453 | current_objfile -> ei.entry_point < current_source_end_addr) | |
bd5635a1 | 454 | { |
7f4c8595 SS |
455 | current_objfile -> ei.entry_file_lowpc = current_source_start_addr; |
456 | current_objfile -> ei.entry_file_highpc = current_source_end_addr; | |
bd5635a1 RP |
457 | } |
458 | } | |
459 | ||
460 | /* Finish the symbol definitions for one main source file, | |
461 | close off all the lexical contexts for that file | |
462 | (creating struct block's for them), then make the | |
463 | struct symtab for that file and put it in the list of all such. */ | |
464 | ||
465 | static void | |
318bf84f | 466 | coff_end_symtab (objfile) |
a048c8f5 | 467 | struct objfile *objfile; |
bd5635a1 | 468 | { |
c438b3af | 469 | struct symtab *symtab; |
bd5635a1 | 470 | |
7f4c8595 | 471 | last_source_start_addr = current_source_start_addr; |
bd5635a1 | 472 | |
fc773653 JK |
473 | /* For no good reason, this file stores the number of entries in a |
474 | separate variable instead of in line_vector->nitems. Fix it. */ | |
475 | if (line_vector) | |
476 | line_vector->nitems = line_vector_index; | |
477 | ||
c438b3af JK |
478 | /* For COFF, we only have one subfile, so we can just look at |
479 | subfiles and not worry about there being other elements in the | |
480 | chain. We fill in various fields now because we didn't know them | |
481 | before (or because doing it now is simply an artifact of how this | |
482 | file used to be written). */ | |
483 | subfiles->line_vector = line_vector; | |
484 | subfiles->name = last_source_file; | |
bd5635a1 | 485 | |
c438b3af JK |
486 | /* sort_pending is needed for amdcoff, at least. |
487 | sort_linevec is needed for the SCO compiler. */ | |
7f4c8595 | 488 | symtab = end_symtab (current_source_end_addr, 1, 1, objfile, 0); |
bd5635a1 | 489 | |
c438b3af JK |
490 | if (symtab != NULL) |
491 | free_named_symtabs (symtab->filename); | |
a6e2b424 | 492 | |
bd5635a1 RP |
493 | /* Reinitialize for beginning of new file. */ |
494 | line_vector = 0; | |
495 | line_vector_length = -1; | |
85f0a848 | 496 | last_source_file = NULL; |
bd5635a1 RP |
497 | } |
498 | \f | |
499 | static void | |
af8b7906 | 500 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
501 | char *name; |
502 | CORE_ADDR address; | |
f70be3e4 | 503 | enum minimal_symbol_type type; |
af8b7906 | 504 | struct objfile *objfile; |
bd5635a1 | 505 | { |
318bf84f | 506 | /* We don't want TDESC entry points in the minimal symbol table */ |
bd5635a1 | 507 | if (name[0] == '@') return; |
e140f1da | 508 | |
ab93997d JK |
509 | prim_record_minimal_symbol |
510 | (obsavestring (name, strlen (name), &objfile->symbol_obstack), | |
511 | address, type, | |
512 | objfile); | |
bd5635a1 RP |
513 | } |
514 | \f | |
515 | /* coff_symfile_init () | |
516 | is the coff-specific initialization routine for reading symbols. | |
3624c875 | 517 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
518 | the BFD for the file whose symbols are being read, and a slot for |
519 | a pointer to "private data" which we fill with cookies and other | |
520 | treats for coff_symfile_read (). | |
521 | ||
522 | We will only be called if this is a COFF or COFF-like file. | |
523 | BFD handles figuring out the format of the file, and code in symtab.c | |
524 | uses BFD's determination to vector to us. | |
525 | ||
526 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
527 | ||
9bba3334 | 528 | static void |
80d68b1d FF |
529 | coff_symfile_init (objfile) |
530 | struct objfile *objfile; | |
bd5635a1 | 531 | { |
80d68b1d | 532 | bfd *abfd = objfile->obfd; |
bd5635a1 | 533 | |
8f6960c9 JK |
534 | /* Allocate struct to keep track of stab reading. */ |
535 | objfile->sym_stab_info = (PTR) | |
536 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); | |
537 | ||
538 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); | |
539 | ||
bd5635a1 | 540 | /* Allocate struct to keep track of the symfile */ |
80d68b1d FF |
541 | objfile -> sym_private = xmmalloc (objfile -> md, |
542 | sizeof (struct coff_symfile_info)); | |
bd5635a1 | 543 | |
b5b186a2 SS |
544 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); |
545 | ||
3624c875 | 546 | init_entry_point_info (objfile); |
bd5635a1 RP |
547 | } |
548 | ||
549 | /* This function is called for every section; it finds the outer limits | |
550 | of the line table (minimum and maximum file offset) so that the | |
551 | mainline code can read the whole thing for efficiency. */ | |
552 | ||
e1ce8aa5 | 553 | /* ARGSUSED */ |
bd5635a1 RP |
554 | static void |
555 | find_linenos (abfd, asect, vpinfo) | |
556 | bfd *abfd; | |
557 | sec_ptr asect; | |
318bf84f | 558 | PTR vpinfo; |
bd5635a1 RP |
559 | { |
560 | struct coff_symfile_info *info; | |
561 | int size, count; | |
562 | file_ptr offset, maxoff; | |
563 | ||
564 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
565 | count = asect->lineno_count; | |
566 | /* End of warning */ | |
567 | ||
568 | if (count == 0) | |
569 | return; | |
d8ce1326 | 570 | size = count * local_linesz; |
bd5635a1 RP |
571 | |
572 | info = (struct coff_symfile_info *)vpinfo; | |
573 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
574 | offset = asect->line_filepos; | |
575 | /* End of warning */ | |
576 | ||
577 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
578 | info->min_lineno_offset = offset; | |
579 | ||
580 | maxoff = offset + size; | |
581 | if (maxoff > info->max_lineno_offset) | |
582 | info->max_lineno_offset = maxoff; | |
583 | } | |
584 | ||
585 | ||
e1ce8aa5 JK |
586 | /* The BFD for this file -- only good while we're actively reading |
587 | symbols into a psymtab or a symtab. */ | |
588 | ||
589 | static bfd *symfile_bfd; | |
590 | ||
bd5635a1 | 591 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
bd5635a1 | 592 | |
61a7292f | 593 | /* ARGSUSED */ |
9bba3334 | 594 | static void |
85f0a848 | 595 | coff_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 596 | struct objfile *objfile; |
85f0a848 | 597 | struct section_offsets *section_offsets; |
bd5635a1 RP |
598 | int mainline; |
599 | { | |
80d68b1d | 600 | struct coff_symfile_info *info; |
8f6960c9 | 601 | struct dbx_symfile_info *dbxinfo; |
80d68b1d | 602 | bfd *abfd = objfile->obfd; |
d8ce1326 | 603 | coff_data_type *cdata = coff_data (abfd); |
bd5635a1 | 604 | char *name = bfd_get_filename (abfd); |
bd5635a1 RP |
605 | register int val; |
606 | int num_symbols; | |
607 | int symtab_offset; | |
608 | int stringtab_offset; | |
e09c5e26 | 609 | struct cleanup *back_to; |
b5b186a2 | 610 | int stabsize, stabstrsize; |
bd5635a1 | 611 | |
80d68b1d | 612 | info = (struct coff_symfile_info *) objfile -> sym_private; |
8f6960c9 | 613 | dbxinfo = (struct dbx_symfile_info *) objfile->sym_stab_info; |
bd5635a1 RP |
614 | symfile_bfd = abfd; /* Kludge for swap routines */ |
615 | ||
616 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
bd5635a1 | 617 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
d8ce1326 JG |
618 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
619 | stringtab_offset = symtab_offset + /* String table file offset */ | |
620 | num_symbols * cdata->local_symesz; | |
621 | ||
622 | /* Set a few file-statics that give us specific information about | |
623 | the particular COFF file format we're reading. */ | |
624 | local_linesz = cdata->local_linesz; | |
625 | local_n_btmask = cdata->local_n_btmask; | |
626 | local_n_btshft = cdata->local_n_btshft; | |
627 | local_n_tmask = cdata->local_n_tmask; | |
628 | local_n_tshift = cdata->local_n_tshift; | |
629 | local_linesz = cdata->local_linesz; | |
630 | local_symesz = cdata->local_symesz; | |
631 | local_auxesz = cdata->local_auxesz; | |
632 | ||
633 | /* Allocate space for raw symbol and aux entries, based on their | |
634 | space requirements as reported by BFD. */ | |
635 | temp_sym = (char *) xmalloc | |
636 | (cdata->local_symesz + cdata->local_auxesz); | |
637 | temp_aux = temp_sym + cdata->local_symesz; | |
e09c5e26 | 638 | back_to = make_cleanup (free_current_contents, &temp_sym); |
bd5635a1 RP |
639 | /* End of warning */ |
640 | ||
bd5635a1 RP |
641 | /* Read the line number table, all at once. */ |
642 | info->min_lineno_offset = 0; | |
643 | info->max_lineno_offset = 0; | |
b5b186a2 | 644 | bfd_map_over_sections (abfd, find_linenos, (PTR) info); |
bd5635a1 | 645 | |
e09c5e26 | 646 | make_cleanup (free_linetab, 0); |
7f4c8595 | 647 | val = init_lineno (abfd, info->min_lineno_offset, |
bd5635a1 RP |
648 | info->max_lineno_offset - info->min_lineno_offset); |
649 | if (val < 0) | |
650 | error ("\"%s\": error reading line numbers\n", name); | |
651 | ||
652 | /* Now read the string table, all at once. */ | |
653 | ||
e09c5e26 | 654 | make_cleanup (free_stringtab, 0); |
7f4c8595 | 655 | val = init_stringtab (abfd, stringtab_offset); |
bd5635a1 | 656 | if (val < 0) |
a048c8f5 | 657 | error ("\"%s\": can't get string table", name); |
bd5635a1 | 658 | |
318bf84f FF |
659 | init_minimal_symbol_collection (); |
660 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
661 | |
662 | /* Now that the executable file is positioned at symbol table, | |
663 | process it and define symbols accordingly. */ | |
664 | ||
7f4c8595 SS |
665 | coff_symtab_read ((long) symtab_offset, num_symbols, section_offsets, |
666 | objfile); | |
bd5635a1 RP |
667 | |
668 | /* Sort symbols alphabetically within each block. */ | |
669 | ||
9c38eb65 JK |
670 | { |
671 | struct symtab *s; | |
7f4c8595 | 672 | |
9c38eb65 | 673 | for (s = objfile -> symtabs; s != NULL; s = s -> next) |
7f4c8595 | 674 | sort_symtab_syms (s); |
9c38eb65 | 675 | } |
bd5635a1 | 676 | |
318bf84f | 677 | /* Install any minimal symbols that have been collected as the current |
7f4c8595 | 678 | minimal symbols for this objfile. */ |
bd5635a1 | 679 | |
80d68b1d | 680 | install_minimal_symbols (objfile); |
e09c5e26 | 681 | |
b5b186a2 SS |
682 | bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info); |
683 | ||
684 | if (info->stabsect) | |
685 | { | |
0ccbaadc JK |
686 | /* FIXME: dubious. Why can't we use something normal like |
687 | bfd_get_section_contents? */ | |
7f4c8595 | 688 | bfd_seek (abfd, abfd->where, 0); |
b5b186a2 SS |
689 | |
690 | stabsize = bfd_section_size (abfd, info->stabsect); | |
691 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
692 | ||
693 | coffstab_build_psymtabs (objfile, | |
694 | section_offsets, | |
695 | mainline, | |
696 | info->stabsect->filepos, stabsize, | |
697 | info->stabstrsect->filepos, stabstrsize); | |
698 | } | |
699 | ||
e09c5e26 | 700 | do_cleanups (back_to); |
bd5635a1 RP |
701 | } |
702 | ||
9bba3334 | 703 | static void |
f70be3e4 JG |
704 | coff_new_init (ignore) |
705 | struct objfile *ignore; | |
bd5635a1 | 706 | { |
bd5635a1 | 707 | } |
80d68b1d FF |
708 | |
709 | /* Perform any local cleanups required when we are done with a particular | |
710 | objfile. I.E, we are in the process of discarding all symbol information | |
711 | for an objfile, freeing up all memory held for it, and unlinking the | |
712 | objfile struct from the global list of known objfiles. */ | |
713 | ||
714 | static void | |
715 | coff_symfile_finish (objfile) | |
716 | struct objfile *objfile; | |
717 | { | |
718 | if (objfile -> sym_private != NULL) | |
719 | { | |
720 | mfree (objfile -> md, objfile -> sym_private); | |
721 | } | |
722 | } | |
723 | ||
bd5635a1 | 724 | \f |
bd5635a1 RP |
725 | /* Given pointers to a symbol table in coff style exec file, |
726 | analyze them and create struct symtab's describing the symbols. | |
727 | NSYMS is the number of symbols in the symbol table. | |
728 | We read them one at a time using read_one_sym (). */ | |
729 | ||
730 | static void | |
7f4c8595 | 731 | coff_symtab_read (symtab_offset, nsyms, section_offsets, objfile) |
f70be3e4 | 732 | long symtab_offset; |
bd5635a1 | 733 | int nsyms; |
7f4c8595 | 734 | struct section_offsets *section_offsets; |
a048c8f5 | 735 | struct objfile *objfile; |
bd5635a1 | 736 | { |
c438b3af | 737 | register struct context_stack *new; |
bd5635a1 RP |
738 | struct coff_symbol coff_symbol; |
739 | register struct coff_symbol *cs = &coff_symbol; | |
dcc35536 JG |
740 | static struct internal_syment main_sym; |
741 | static union internal_auxent main_aux; | |
bd5635a1 | 742 | struct coff_symbol fcn_cs_saved; |
dcc35536 JG |
743 | static struct internal_syment fcn_sym_saved; |
744 | static union internal_auxent fcn_aux_saved; | |
f70be3e4 | 745 | struct symtab *s; |
bd5635a1 RP |
746 | /* A .file is open. */ |
747 | int in_source_file = 0; | |
bd5635a1 | 748 | int next_file_symnum = -1; |
bd5635a1 RP |
749 | /* Name of the current file. */ |
750 | char *filestring = ""; | |
f70be3e4 JG |
751 | int depth = 0; |
752 | int fcn_first_line = 0; | |
753 | int fcn_last_line = 0; | |
754 | int fcn_start_addr = 0; | |
755 | long fcn_line_ptr = 0; | |
f70be3e4 | 756 | int val; |
7f4c8595 | 757 | CORE_ADDR tmpaddr; |
bd5635a1 | 758 | |
f2c365f5 | 759 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
fc312cc6 JK |
760 | it's hard to know I've really worked around it. The fix should be |
761 | harmless, anyway). The symptom of the bug is that the first | |
762 | fread (in read_one_sym), will (in my example) actually get data | |
763 | from file offset 268, when the fseek was to 264 (and ftell shows | |
764 | 264). This causes all hell to break loose. I was unable to | |
765 | reproduce this on a short test program which operated on the same | |
766 | file, performing (I think) the same sequence of operations. | |
767 | ||
7f4c8595 | 768 | It stopped happening when I put in this (former) rewind(). |
fc312cc6 JK |
769 | |
770 | FIXME: Find out if this has been reported to Sun, whether it has | |
771 | been fixed in a later release, etc. */ | |
772 | ||
7f4c8595 | 773 | bfd_seek (objfile->obfd, 0, 0); |
f2c365f5 | 774 | |
f70be3e4 | 775 | /* Position to read the symbol table. */ |
7f4c8595 | 776 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
f70be3e4 JG |
777 | if (val < 0) |
778 | perror_with_name (objfile->name); | |
bd5635a1 | 779 | |
318bf84f | 780 | current_objfile = objfile; |
7f4c8595 | 781 | nlist_bfd_global = objfile->obfd; |
bd5635a1 | 782 | nlist_nsyms_global = nsyms; |
85f0a848 | 783 | last_source_file = NULL; |
4ed3a9ea | 784 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
bd5635a1 | 785 | |
cadbb07a | 786 | if (type_vector) /* Get rid of previous one */ |
7f4c8595 | 787 | free ((PTR) type_vector); |
bd5635a1 | 788 | type_vector_length = 160; |
159a075e | 789 | type_vector = (struct type **) |
7f4c8595 | 790 | xmalloc (type_vector_length * sizeof (struct type *)); |
4ed3a9ea | 791 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); |
bd5635a1 | 792 | |
318bf84f | 793 | coff_start_symtab (); |
bd5635a1 RP |
794 | |
795 | symnum = 0; | |
796 | while (symnum < nsyms) | |
797 | { | |
798 | QUIT; /* Make this command interruptable. */ | |
7f4c8595 | 799 | |
bd5635a1 RP |
800 | read_one_sym (cs, &main_sym, &main_aux); |
801 | ||
802 | #ifdef SEM | |
803 | temp_sem_val = cs->c_name[0] << 24 | cs->c_name[1] << 16 | | |
804 | cs->c_name[2] << 8 | cs->c_name[3]; | |
805 | if (int_sem_val == temp_sem_val) | |
806 | last_coffsem = (int) strtol (cs->c_name+4, (char **) NULL, 10); | |
807 | #endif | |
808 | ||
809 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
810 | { | |
811 | if (last_source_file) | |
318bf84f | 812 | coff_end_symtab (objfile); |
bd5635a1 | 813 | |
318bf84f | 814 | coff_start_symtab (); |
af8b7906 | 815 | complete_symtab ("_globals_", 0, 0); |
bd5635a1 RP |
816 | /* done with all files, everything from here on out is globals */ |
817 | } | |
818 | ||
819 | /* Special case for file with type declarations only, no text. */ | |
8714ff35 JK |
820 | if (!last_source_file && SDB_TYPE (cs->c_type) |
821 | && cs->c_secnum == N_DEBUG) | |
bd5635a1 RP |
822 | complete_symtab (filestring, 0, 0); |
823 | ||
824 | /* Typedefs should not be treated as symbol definitions. */ | |
825 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
826 | { | |
e09c5e26 | 827 | /* Record all functions -- external and static -- in minsyms. */ |
7f4c8595 SS |
828 | tmpaddr = cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT); |
829 | record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile); | |
bd5635a1 RP |
830 | |
831 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
7f4c8595 | 832 | fcn_start_addr = tmpaddr; |
bd5635a1 RP |
833 | fcn_cs_saved = *cs; |
834 | fcn_sym_saved = main_sym; | |
835 | fcn_aux_saved = main_aux; | |
836 | continue; | |
837 | } | |
838 | ||
839 | switch (cs->c_sclass) | |
840 | { | |
841 | case C_EFCN: | |
842 | case C_EXTDEF: | |
843 | case C_ULABEL: | |
844 | case C_USTATIC: | |
845 | case C_LINE: | |
846 | case C_ALIAS: | |
847 | case C_HIDDEN: | |
7e258d18 | 848 | complain (&bad_sclass_complaint, cs->c_name); |
bd5635a1 RP |
849 | break; |
850 | ||
851 | case C_FILE: | |
7f4c8595 SS |
852 | /* c_value field contains symnum of next .file entry in table |
853 | or symnum of first global after last .file. */ | |
bd5635a1 | 854 | next_file_symnum = cs->c_value; |
f0fcf00a | 855 | if (cs->c_naux > 0) |
af8b7906 | 856 | filestring = coff_getfilename (&main_aux); |
f0fcf00a SG |
857 | else |
858 | filestring = ""; | |
859 | ||
7f4c8595 SS |
860 | /* Complete symbol table for last object file |
861 | containing debugging information. */ | |
bd5635a1 RP |
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: | |
7f4c8595 SS |
871 | if (cs->c_name[0] == '.') |
872 | { | |
873 | if (STREQ (cs->c_name, ".text")) { | |
874 | /* FIXME: don't wire in ".text" as section name | |
875 | or symbol name! */ | |
876 | /* Check for in_source_file deals with case of | |
877 | a file with debugging symbols | |
878 | followed by a later file with no symbols. */ | |
879 | if (in_source_file) | |
880 | complete_symtab (filestring, | |
881 | cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
882 | main_aux.x_scn.x_scnlen); | |
883 | in_source_file = 0; | |
884 | } | |
885 | /* flush rest of '.' symbols */ | |
886 | break; | |
887 | } | |
8714ff35 | 888 | else if (!SDB_TYPE (cs->c_type) |
bd5635a1 RP |
889 | && cs->c_name[0] == 'L' |
890 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
8714ff35 | 891 | || strncmp (cs->c_name, "LF%", 3) == 0 |
bd5635a1 RP |
892 | || strncmp (cs->c_name,"LC%",3) == 0 |
893 | || strncmp (cs->c_name,"LP%",3) == 0 | |
894 | || strncmp (cs->c_name,"LPB%",4) == 0 | |
895 | || strncmp (cs->c_name,"LBB%",4) == 0 | |
896 | || strncmp (cs->c_name,"LBE%",4) == 0 | |
897 | || strncmp (cs->c_name,"LPBX%",5) == 0)) | |
898 | /* At least on a 3b1, gcc generates swbeg and string labels | |
899 | that look like this. Ignore them. */ | |
900 | break; | |
901 | /* fall in for static symbols that don't start with '.' */ | |
902 | case C_EXT: | |
e7b5942b JK |
903 | { |
904 | /* Record it in the minimal symbols regardless of | |
905 | SDB_TYPE. This parallels what we do for other debug | |
906 | formats, and probably is needed to make | |
907 | print_address_symbolic work right without the (now | |
908 | gone) "set fast-symbolic-addr off" kludge. */ | |
909 | ||
910 | /* FIXME: should use mst_abs, and not relocate, if absolute. */ | |
911 | enum minimal_symbol_type ms_type; | |
3a470454 JK |
912 | int sec; |
913 | ||
914 | if (cs->c_secnum == N_UNDEF) | |
915 | { | |
916 | /* This is a common symbol. See if the target | |
917 | environment knows where it has been relocated to. */ | |
918 | CORE_ADDR reladdr; | |
919 | if (target_lookup_symbol (cs->c_name, &reladdr)) | |
920 | { | |
921 | /* Error in lookup; ignore symbol. */ | |
922 | break; | |
923 | } | |
924 | tmpaddr = reladdr; | |
62fad389 JK |
925 | /* The address has already been relocated; make sure that |
926 | objfile_relocate doesn't relocate it again. */ | |
927 | sec = -2; | |
928 | ms_type = cs->c_sclass == C_STAT ? mst_file_bss : mst_bss; | |
3a470454 JK |
929 | } |
930 | else | |
931 | { | |
932 | sec = cs_to_section (cs, objfile); | |
933 | tmpaddr = cs->c_value; | |
934 | if (cs->c_sclass != C_STAT) | |
935 | tmpaddr += ANOFFSET (section_offsets, sec); | |
62fad389 JK |
936 | |
937 | switch (sec) | |
938 | { | |
939 | case SECT_OFF_TEXT: | |
940 | case SECT_OFF_RODATA: | |
941 | ms_type = | |
942 | cs->c_sclass == C_STAT ? mst_file_text : mst_text; | |
943 | break; | |
944 | case SECT_OFF_DATA: | |
945 | ms_type = | |
946 | cs->c_sclass == C_STAT ? mst_file_data : mst_data; | |
947 | break; | |
948 | case SECT_OFF_BSS: | |
949 | ms_type = | |
950 | cs->c_sclass == C_STAT ? mst_file_bss : mst_bss; | |
951 | break; | |
952 | default: | |
953 | ms_type = mst_unknown; | |
954 | break; | |
955 | } | |
3a470454 JK |
956 | } |
957 | ||
62fad389 JK |
958 | if (cs->c_name[0] != '@' /* Skip tdesc symbols */) |
959 | prim_record_minimal_symbol_and_info | |
960 | (obsavestring (cs->c_name, strlen (cs->c_name), | |
961 | &objfile->symbol_obstack), | |
962 | tmpaddr, | |
963 | ms_type, | |
964 | NULL, | |
965 | sec, | |
966 | objfile); | |
967 | ||
968 | if (SDB_TYPE (cs->c_type)) | |
e7b5942b | 969 | { |
62fad389 JK |
970 | struct symbol *sym; |
971 | sym = process_coff_symbol | |
972 | (cs, &main_aux, section_offsets, objfile); | |
973 | SYMBOL_VALUE (sym) = tmpaddr; | |
974 | SYMBOL_SECTION (sym) = sec; | |
e7b5942b | 975 | } |
e7b5942b | 976 | } |
bd5635a1 RP |
977 | break; |
978 | ||
979 | case C_FCN: | |
c653bc6d | 980 | if (STREQ (cs->c_name, ".bf")) |
bd5635a1 RP |
981 | { |
982 | within_function = 1; | |
983 | ||
984 | /* value contains address of first non-init type code */ | |
985 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
986 | contains line number of '{' } */ | |
e64fbb3a | 987 | if (cs->c_naux != 1) |
51b80b00 | 988 | complain (&bf_no_aux_complaint, cs->c_symnum); |
bd5635a1 RP |
989 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
990 | ||
c438b3af JK |
991 | /* Might want to check that locals are 0 and |
992 | context_stack_depth is zero, and complain if not. */ | |
993 | ||
994 | depth = 0; | |
995 | new = push_context (depth, fcn_start_addr); | |
bd5635a1 | 996 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
7f4c8595 SS |
997 | new->name = |
998 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, | |
999 | section_offsets, objfile); | |
bd5635a1 | 1000 | } |
c653bc6d | 1001 | else if (STREQ (cs->c_name, ".ef")) |
bd5635a1 | 1002 | { |
c438b3af JK |
1003 | /* the value of .ef is the address of epilogue code; |
1004 | not useful for gdb. */ | |
bd5635a1 RP |
1005 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
1006 | contains number of lines to '}' */ | |
c438b3af JK |
1007 | new = pop_context (); |
1008 | /* Stack must be empty now. */ | |
1009 | if (context_stack_depth > 0 || new == NULL) | |
bd5635a1 | 1010 | { |
51b80b00 | 1011 | complain (&ef_complaint, cs->c_symnum); |
bd5635a1 RP |
1012 | within_function = 0; |
1013 | break; | |
1014 | } | |
c438b3af JK |
1015 | if (cs->c_naux != 1) |
1016 | { | |
1017 | complain (&ef_no_aux_complaint, cs->c_symnum); | |
1018 | fcn_last_line = 0x7FFFFFFF; | |
1019 | } | |
1020 | else | |
1021 | { | |
1022 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1023 | } | |
7f4c8595 SS |
1024 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, |
1025 | section_offsets); | |
bd5635a1 | 1026 | |
c438b3af | 1027 | finish_block (new->name, &local_symbols, new->old_blocks, |
bd5635a1 RP |
1028 | new->start_addr, |
1029 | #if defined (FUNCTION_EPILOGUE_SIZE) | |
1030 | /* This macro should be defined only on | |
1031 | machines where the | |
1032 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1033 | field is always zero. | |
1034 | So use the .bf record information that | |
1035 | points to the epilogue and add the size | |
1036 | of the epilogue. */ | |
7f4c8595 SS |
1037 | cs->c_value |
1038 | + FUNCTION_EPILOGUE_SIZE | |
1039 | + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
bd5635a1 | 1040 | #else |
7f4c8595 SS |
1041 | fcn_cs_saved.c_value |
1042 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1043 | + ANOFFSET (section_offsets, SECT_OFF_TEXT), | |
bd5635a1 | 1044 | #endif |
318bf84f | 1045 | objfile |
bd5635a1 | 1046 | ); |
bd5635a1 | 1047 | within_function = 0; |
bd5635a1 RP |
1048 | } |
1049 | break; | |
1050 | ||
1051 | case C_BLOCK: | |
c653bc6d | 1052 | if (STREQ (cs->c_name, ".bb")) |
bd5635a1 | 1053 | { |
7f4c8595 SS |
1054 | tmpaddr = cs->c_value; |
1055 | tmpaddr += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1056 | push_context (++depth, tmpaddr); | |
bd5635a1 | 1057 | } |
c653bc6d | 1058 | else if (STREQ (cs->c_name, ".eb")) |
bd5635a1 | 1059 | { |
c438b3af JK |
1060 | new = pop_context (); |
1061 | if (depth-- != new->depth) | |
de9bef49 | 1062 | { |
5573d7d4 | 1063 | complain (&eb_complaint, symnum); |
de9bef49 JG |
1064 | break; |
1065 | } | |
c438b3af | 1066 | if (local_symbols && context_stack_depth > 0) |
bd5635a1 | 1067 | { |
7f4c8595 SS |
1068 | tmpaddr = |
1069 | cs->c_value + ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 | 1070 | /* Make a block for the local symbols within. */ |
c438b3af | 1071 | finish_block (0, &local_symbols, new->old_blocks, |
7f4c8595 | 1072 | new->start_addr, tmpaddr, objfile); |
bd5635a1 | 1073 | } |
c438b3af JK |
1074 | /* Now pop locals of block just finished. */ |
1075 | local_symbols = new->locals; | |
bd5635a1 RP |
1076 | } |
1077 | break; | |
bd5635a1 RP |
1078 | |
1079 | default: | |
7f4c8595 | 1080 | process_coff_symbol (cs, &main_aux, section_offsets, objfile); |
bd5635a1 RP |
1081 | break; |
1082 | } | |
1083 | } | |
1084 | ||
1085 | if (last_source_file) | |
318bf84f | 1086 | coff_end_symtab (objfile); |
f70be3e4 JG |
1087 | |
1088 | /* Patch up any opaque types (references to types that are not defined | |
1089 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1090 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1091 | patch_opaque_types (s); | |
1092 | ||
318bf84f | 1093 | current_objfile = NULL; |
bd5635a1 RP |
1094 | } |
1095 | \f | |
1096 | /* Routines for reading headers and symbols from executable. */ | |
1097 | ||
dcc35536 JG |
1098 | /* Read the next symbol, swap it, and return it in both internal_syment |
1099 | form, and coff_symbol form. Also return its first auxent, if any, | |
1100 | in internal_auxent form, and skip any other auxents. */ | |
bd5635a1 RP |
1101 | |
1102 | static void | |
1103 | read_one_sym (cs, sym, aux) | |
1104 | register struct coff_symbol *cs; | |
dcc35536 JG |
1105 | register struct internal_syment *sym; |
1106 | register union internal_auxent *aux; | |
bd5635a1 | 1107 | { |
bd5635a1 RP |
1108 | int i; |
1109 | ||
1110 | cs->c_symnum = symnum; | |
7f4c8595 | 1111 | bfd_read (temp_sym, local_symesz, 1, nlist_bfd_global); |
d8ce1326 | 1112 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *)sym); |
e64fbb3a JG |
1113 | cs->c_naux = sym->n_numaux & 0xff; |
1114 | if (cs->c_naux >= 1) | |
bd5635a1 | 1115 | { |
7f4c8595 | 1116 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); |
d8ce1326 | 1117 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
bf8d9d28 | 1118 | 0, cs->c_naux, (char *)aux); |
bd5635a1 RP |
1119 | /* If more than one aux entry, read past it (only the first aux |
1120 | is important). */ | |
e64fbb3a | 1121 | for (i = 1; i < cs->c_naux; i++) |
7f4c8595 | 1122 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); |
bd5635a1 RP |
1123 | } |
1124 | cs->c_name = getsymname (sym); | |
1125 | cs->c_value = sym->n_value; | |
1126 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1127 | cs->c_secnum = sym->n_scnum; | |
1128 | cs->c_type = (unsigned) sym->n_type; | |
8714ff35 JK |
1129 | if (!SDB_TYPE (cs->c_type)) |
1130 | cs->c_type = 0; | |
bd5635a1 | 1131 | |
e64fbb3a | 1132 | symnum += 1 + cs->c_naux; |
bd5635a1 RP |
1133 | } |
1134 | \f | |
1135 | /* Support for string table handling */ | |
1136 | ||
1137 | static char *stringtab = NULL; | |
1138 | ||
1139 | static int | |
7f4c8595 SS |
1140 | init_stringtab (abfd, offset) |
1141 | bfd *abfd; | |
bd5635a1 RP |
1142 | long offset; |
1143 | { | |
1144 | long length; | |
1145 | int val; | |
1146 | unsigned char lengthbuf[4]; | |
1147 | ||
e09c5e26 | 1148 | free_stringtab (); |
bd5635a1 | 1149 | |
7f4c8595 SS |
1150 | /* If the file is stripped, the offset might be zero, indicating no |
1151 | string table. Just return with `stringtab' set to null. */ | |
1152 | if (offset == 0) | |
1153 | return 0; | |
1154 | ||
1155 | if (bfd_seek (abfd, offset, 0) < 0) | |
bd5635a1 RP |
1156 | return -1; |
1157 | ||
7f4c8595 | 1158 | val = bfd_read ((char *)lengthbuf, sizeof lengthbuf, 1, abfd); |
dcc35536 | 1159 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
bd5635a1 RP |
1160 | |
1161 | /* If no string table is needed, then the file may end immediately | |
1162 | after the symbols. Just return with `stringtab' set to null. */ | |
e09c5e26 | 1163 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
bd5635a1 RP |
1164 | return 0; |
1165 | ||
1166 | stringtab = (char *) xmalloc (length); | |
602d41e5 JK |
1167 | /* This is in target format (probably not very useful, and not currently |
1168 | used), not host format. */ | |
1169 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
bd5635a1 RP |
1170 | if (length == sizeof length) /* Empty table -- just the count */ |
1171 | return 0; | |
1172 | ||
7f4c8595 | 1173 | val = bfd_read (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, 1, abfd); |
e09c5e26 | 1174 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
bd5635a1 RP |
1175 | return -1; |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static void | |
1181 | free_stringtab () | |
1182 | { | |
1183 | if (stringtab) | |
1184 | free (stringtab); | |
1185 | stringtab = NULL; | |
1186 | } | |
1187 | ||
1188 | static char * | |
1189 | getsymname (symbol_entry) | |
dcc35536 | 1190 | struct internal_syment *symbol_entry; |
bd5635a1 RP |
1191 | { |
1192 | static char buffer[SYMNMLEN+1]; | |
1193 | char *result; | |
1194 | ||
dcc35536 | 1195 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
bd5635a1 | 1196 | { |
602d41e5 JK |
1197 | /* FIXME: Probably should be detecting corrupt symbol files by |
1198 | seeing whether offset points to within the stringtab. */ | |
dcc35536 | 1199 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
bd5635a1 RP |
1200 | } |
1201 | else | |
1202 | { | |
dcc35536 | 1203 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); |
bd5635a1 RP |
1204 | buffer[SYMNMLEN] = '\0'; |
1205 | result = buffer; | |
1206 | } | |
1207 | return result; | |
1208 | } | |
1209 | ||
c653bc6d JG |
1210 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1211 | only the last component of the name. Result is in static storage and | |
1212 | is only good for temporary use. */ | |
1213 | ||
dbb0fae2 | 1214 | char * |
af8b7906 | 1215 | coff_getfilename (aux_entry) |
dcc35536 | 1216 | union internal_auxent *aux_entry; |
bd5635a1 RP |
1217 | { |
1218 | static char buffer[BUFSIZ]; | |
1219 | register char *temp; | |
1220 | char *result; | |
bd5635a1 | 1221 | |
bd5635a1 RP |
1222 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1223 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1224 | else | |
bd5635a1 | 1225 | { |
bd5635a1 | 1226 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); |
bd5635a1 RP |
1227 | buffer[FILNMLEN] = '\0'; |
1228 | } | |
1229 | result = buffer; | |
ab93997d JK |
1230 | |
1231 | /* FIXME: We should not be throwing away the information about what | |
1232 | directory. It should go into dirname of the symtab, or some such | |
1233 | place. */ | |
318bf84f | 1234 | if ((temp = strrchr (result, '/')) != NULL) |
bd5635a1 RP |
1235 | result = temp + 1; |
1236 | return (result); | |
1237 | } | |
1238 | \f | |
7f4c8595 SS |
1239 | /* Support for line number handling. */ |
1240 | ||
bd5635a1 RP |
1241 | static char *linetab = NULL; |
1242 | static long linetab_offset; | |
1243 | static unsigned long linetab_size; | |
1244 | ||
dcc35536 JG |
1245 | /* Read in all the line numbers for fast lookups later. Leave them in |
1246 | external (unswapped) format in memory; we'll swap them as we enter | |
1247 | them into GDB's data structures. */ | |
bd5635a1 RP |
1248 | |
1249 | static int | |
7f4c8595 SS |
1250 | init_lineno (abfd, offset, size) |
1251 | bfd *abfd; | |
bd5635a1 RP |
1252 | long offset; |
1253 | int size; | |
1254 | { | |
1255 | int val; | |
bd5635a1 | 1256 | |
61a7292f SG |
1257 | linetab_offset = offset; |
1258 | linetab_size = size; | |
1259 | ||
e09c5e26 JK |
1260 | free_linetab(); |
1261 | ||
61a7292f SG |
1262 | if (size == 0) |
1263 | return 0; | |
1264 | ||
7f4c8595 | 1265 | if (bfd_seek (abfd, offset, 0) < 0) |
bd5635a1 RP |
1266 | return -1; |
1267 | ||
e64fbb3a JG |
1268 | /* Allocate the desired table, plus a sentinel */ |
1269 | linetab = (char *) xmalloc (size + local_linesz); | |
bd5635a1 | 1270 | |
7f4c8595 | 1271 | val = bfd_read (linetab, size, 1, abfd); |
bd5635a1 RP |
1272 | if (val != size) |
1273 | return -1; | |
1274 | ||
e64fbb3a | 1275 | /* Terminate it with an all-zero sentinel record */ |
4ed3a9ea | 1276 | memset (linetab + size, 0, local_linesz); |
e64fbb3a | 1277 | |
bd5635a1 RP |
1278 | return 0; |
1279 | } | |
1280 | ||
e09c5e26 JK |
1281 | static void |
1282 | free_linetab () | |
1283 | { | |
1284 | if (linetab) | |
1285 | free (linetab); | |
1286 | linetab = NULL; | |
1287 | } | |
1288 | ||
bd5635a1 RP |
1289 | #if !defined (L_LNNO32) |
1290 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1291 | #endif | |
1292 | ||
1293 | static void | |
7f4c8595 SS |
1294 | enter_linenos (file_offset, first_line, last_line, section_offsets) |
1295 | long file_offset; | |
1296 | register int first_line; | |
1297 | register int last_line; | |
1298 | struct section_offsets *section_offsets; | |
bd5635a1 RP |
1299 | { |
1300 | register char *rawptr; | |
dcc35536 | 1301 | struct internal_lineno lptr; |
bd5635a1 RP |
1302 | |
1303 | if (file_offset < linetab_offset) | |
1304 | { | |
51b80b00 | 1305 | complain (&lineno_complaint, file_offset); |
63989338 JG |
1306 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1307 | return; | |
1308 | file_offset += linetab_offset; /* Try reading at that linetab offset */ | |
bd5635a1 RP |
1309 | } |
1310 | ||
1311 | rawptr = &linetab[file_offset - linetab_offset]; | |
1312 | ||
1313 | /* skip first line entry for each function */ | |
d8ce1326 | 1314 | rawptr += local_linesz; |
bd5635a1 RP |
1315 | /* line numbers start at one for the first line of the function */ |
1316 | first_line--; | |
1317 | ||
dcc35536 | 1318 | for (;;) { |
d8ce1326 JG |
1319 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); |
1320 | rawptr += local_linesz; | |
e64fbb3a | 1321 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ |
dcc35536 | 1322 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
7f4c8595 SS |
1323 | coff_record_line (first_line + L_LNNO32 (&lptr), |
1324 | lptr.l_addr.l_paddr | |
1325 | + ANOFFSET (section_offsets, SECT_OFF_TEXT)); | |
dcc35536 JG |
1326 | else |
1327 | break; | |
1328 | } | |
bd5635a1 RP |
1329 | } |
1330 | \f | |
bd5635a1 RP |
1331 | static void |
1332 | patch_type (type, real_type) | |
1333 | struct type *type; | |
1334 | struct type *real_type; | |
1335 | { | |
1336 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1337 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1338 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1339 | ||
1340 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1341 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
85f0a848 | 1342 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); |
bd5635a1 | 1343 | |
4ed3a9ea | 1344 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); |
bd5635a1 RP |
1345 | |
1346 | if (TYPE_NAME (real_target)) | |
1347 | { | |
1348 | if (TYPE_NAME (target)) | |
1349 | free (TYPE_NAME (target)); | |
58ae87f6 | 1350 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
bd5635a1 RP |
1351 | } |
1352 | } | |
1353 | ||
7e258d18 | 1354 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
f70be3e4 | 1355 | so that they can be used to print out opaque data structures properly. */ |
bd5635a1 | 1356 | |
f70be3e4 JG |
1357 | static void |
1358 | patch_opaque_types (s) | |
318bf84f | 1359 | struct symtab *s; |
318bf84f FF |
1360 | { |
1361 | register struct block *b; | |
1362 | register int i; | |
1363 | register struct symbol *real_sym; | |
1364 | ||
1365 | /* Go through the per-file symbols only */ | |
1366 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1367 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
bd5635a1 | 1368 | { |
318bf84f FF |
1369 | /* Find completed typedefs to use to fix opaque ones. |
1370 | Remove syms from the chain when their types are stored, | |
1371 | but search the whole chain, as there may be several syms | |
1372 | from different files with the same name. */ | |
1373 | real_sym = BLOCK_SYM (b, i); | |
1374 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1375 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1376 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1377 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
bd5635a1 | 1378 | { |
318bf84f FF |
1379 | register char *name = SYMBOL_NAME (real_sym); |
1380 | register int hash = hashname (name); | |
1381 | register struct symbol *sym, *prev; | |
1382 | ||
1383 | prev = 0; | |
1384 | for (sym = opaque_type_chain[hash]; sym;) | |
bd5635a1 | 1385 | { |
318bf84f | 1386 | if (name[0] == SYMBOL_NAME (sym)[0] && |
c653bc6d | 1387 | STREQ (name + 1, SYMBOL_NAME (sym) + 1)) |
bd5635a1 | 1388 | { |
318bf84f | 1389 | if (prev) |
bd5635a1 | 1390 | { |
318bf84f | 1391 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 RP |
1392 | } |
1393 | else | |
1394 | { | |
318bf84f | 1395 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); |
bd5635a1 | 1396 | } |
318bf84f FF |
1397 | |
1398 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); | |
1399 | ||
1400 | if (prev) | |
1401 | { | |
1402 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | sym = opaque_type_chain[hash]; | |
1407 | } | |
1408 | } | |
1409 | else | |
1410 | { | |
1411 | prev = sym; | |
1412 | sym = SYMBOL_VALUE_CHAIN (sym); | |
bd5635a1 RP |
1413 | } |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | } | |
1418 | \f | |
bd5635a1 | 1419 | static struct symbol * |
7f4c8595 | 1420 | process_coff_symbol (cs, aux, section_offsets, objfile) |
bd5635a1 | 1421 | register struct coff_symbol *cs; |
dcc35536 | 1422 | register union internal_auxent *aux; |
7f4c8595 | 1423 | struct section_offsets *section_offsets; |
318bf84f | 1424 | struct objfile *objfile; |
bd5635a1 RP |
1425 | { |
1426 | register struct symbol *sym | |
c653bc6d JG |
1427 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, |
1428 | sizeof (struct symbol)); | |
bd5635a1 | 1429 | char *name; |
bd5635a1 | 1430 | |
4ed3a9ea | 1431 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 1432 | name = cs->c_name; |
de9bef49 | 1433 | name = EXTERNAL_NAME (name, objfile->obfd); |
c653bc6d JG |
1434 | SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, |
1435 | strlen (name)); | |
bd5635a1 RP |
1436 | |
1437 | /* default assumptions */ | |
1438 | SYMBOL_VALUE (sym) = cs->c_value; | |
1439 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
e7b5942b | 1440 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
bd5635a1 RP |
1441 | |
1442 | if (ISFCN (cs->c_type)) | |
1443 | { | |
7f4c8595 | 1444 | SYMBOL_VALUE (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
d8ce1326 JG |
1445 | #if 0 |
1446 | /* FIXME: This has NOT been tested. The DBX version has.. */ | |
1447 | /* Generate a template for the type of this function. The | |
1448 | types of the arguments will be added as we read the symbol | |
1449 | table. */ | |
1450 | struct type *new = (struct type *) | |
318bf84f | 1451 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct type)); |
d8ce1326 | 1452 | |
4ed3a9ea | 1453 | memcpy (new, lookup_function_type (decode_function_type (cs, cs->c_type, aux)), |
51b57ded | 1454 | sizeof(struct type)); |
d8ce1326 JG |
1455 | SYMBOL_TYPE (sym) = new; |
1456 | in_function_type = SYMBOL_TYPE(sym); | |
1457 | #else | |
1458 | SYMBOL_TYPE(sym) = | |
1459 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
1460 | #endif | |
1461 | ||
bd5635a1 RP |
1462 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1463 | if (cs->c_sclass == C_STAT) | |
c438b3af | 1464 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 | 1465 | else if (cs->c_sclass == C_EXT) |
c438b3af | 1466 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1467 | } |
1468 | else | |
1469 | { | |
1470 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1471 | switch (cs->c_sclass) | |
1472 | { | |
1473 | case C_NULL: | |
1474 | break; | |
1475 | ||
1476 | case C_AUTO: | |
1477 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
c438b3af | 1478 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1479 | break; |
1480 | ||
1481 | case C_EXT: | |
1482 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1483 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
7f4c8595 | 1484 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c438b3af | 1485 | add_symbol_to_list (sym, &global_symbols); |
bd5635a1 RP |
1486 | break; |
1487 | ||
1488 | case C_STAT: | |
1489 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1490 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
7f4c8595 | 1491 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
bd5635a1 RP |
1492 | if (within_function) { |
1493 | /* Static symbol of local scope */ | |
c438b3af | 1494 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1495 | } |
1496 | else { | |
1497 | /* Static symbol at top level of file */ | |
c438b3af | 1498 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1499 | } |
1500 | break; | |
1501 | ||
d8ce1326 JG |
1502 | #ifdef C_GLBLREG /* AMD coff */ |
1503 | case C_GLBLREG: | |
1504 | #endif | |
bd5635a1 RP |
1505 | case C_REG: |
1506 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
d8ce1326 | 1507 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1508 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 RP |
1509 | break; |
1510 | ||
1511 | case C_LABEL: | |
1512 | break; | |
1513 | ||
1514 | case C_ARG: | |
1515 | SYMBOL_CLASS (sym) = LOC_ARG; | |
d8ce1326 | 1516 | #if 0 |
7e258d18 | 1517 | /* FIXME: This has not been tested. */ |
d8ce1326 JG |
1518 | /* Add parameter to function. */ |
1519 | add_param_to_type(&in_function_type,sym); | |
1520 | #endif | |
c438b3af | 1521 | add_symbol_to_list (sym, &local_symbols); |
e7b5942b JK |
1522 | #if !defined (BELIEVE_PCC_PROMOTION) |
1523 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
1524 | { | |
1525 | /* If PCC says a parameter is a short or a char, | |
1526 | aligned on an int boundary, realign it to the | |
1527 | "little end" of the int. */ | |
1528 | struct type *temptype; | |
1529 | temptype = lookup_fundamental_type (current_objfile, | |
1530 | FT_INTEGER); | |
1531 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1532 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
1533 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
1534 | { | |
1535 | SYMBOL_VALUE (sym) += | |
1536 | TYPE_LENGTH (temptype) | |
1537 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1538 | } | |
1539 | } | |
bd5635a1 RP |
1540 | #endif |
1541 | break; | |
1542 | ||
1543 | case C_REGPARM: | |
1544 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
d8ce1326 | 1545 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value); |
c438b3af | 1546 | add_symbol_to_list (sym, &local_symbols); |
bd5635a1 | 1547 | #if !defined (BELIEVE_PCC_PROMOTION) |
7f4c8595 SS |
1548 | /* FIXME: This should retain the current type, since it's just |
1549 | a register value. gnu@adobe, 26Feb93 */ | |
1c95d7ab | 1550 | { |
7f4c8595 | 1551 | /* If PCC says a parameter is a short or a char, |
1c95d7ab JK |
1552 | it is really an int. */ |
1553 | struct type *temptype; | |
1554 | temptype = | |
1555 | lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1556 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1557 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1558 | { | |
1559 | SYMBOL_TYPE (sym) = | |
1560 | (TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1561 | ? lookup_fundamental_type (current_objfile, | |
1562 | FT_UNSIGNED_INTEGER) | |
1563 | : temptype); | |
1564 | } | |
7f4c8595 | 1565 | } |
bd5635a1 RP |
1566 | #endif |
1567 | break; | |
1568 | ||
1569 | case C_TPDEF: | |
1570 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1571 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1572 | ||
1573 | /* If type has no name, give it one */ | |
318bf84f | 1574 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1c95d7ab JK |
1575 | { |
1576 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1577 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1578 | { | |
1579 | /* If we are giving a name to a type such as "pointer to | |
1580 | foo" or "function returning foo", we better not set | |
1581 | the TYPE_NAME. If the program contains "typedef char | |
1582 | *caddr_t;", we don't want all variables of type char | |
1583 | * to print as caddr_t. This is not just a | |
1584 | consequence of GDB's type management; CC and GCC (at | |
1585 | least through version 2.4) both output variables of | |
1586 | either type char * or caddr_t with the type | |
1587 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1588 | compiler cleans this up it GDB is not ready for it | |
1589 | yet, but if it becomes ready we somehow need to | |
1590 | disable this check (without breaking the PCC/GCC2.4 | |
1591 | case). | |
1592 | ||
1593 | Sigh. | |
1594 | ||
1595 | Fortunately, this check seems not to be necessary | |
1596 | for anything except pointers or functions. */ | |
1597 | ; | |
1598 | } | |
1599 | else | |
1600 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
1601 | concat (SYMBOL_NAME (sym), NULL); | |
1602 | } | |
7f4c8595 | 1603 | #ifdef CXUX_TARGET |
e1118f15 | 1604 | /* Ignore vendor section for Harris CX/UX targets. */ |
7f4c8595 SS |
1605 | else if (cs->c_name[0] == '$') |
1606 | break; | |
1607 | #endif /* CXUX_TARGET */ | |
bd5635a1 RP |
1608 | |
1609 | /* Keep track of any type which points to empty structured type, | |
f70be3e4 JG |
1610 | so it can be filled from a definition from another file. A |
1611 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1612 | empty structured type, though; the forward references | |
1613 | work themselves out via the magic of coff_lookup_type. */ | |
bd5635a1 | 1614 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && |
f70be3e4 JG |
1615 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && |
1616 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1617 | TYPE_CODE_UNDEF) | |
bd5635a1 RP |
1618 | { |
1619 | register int i = hashname (SYMBOL_NAME (sym)); | |
1620 | ||
1621 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; | |
1622 | opaque_type_chain[i] = sym; | |
1623 | } | |
c438b3af | 1624 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1625 | break; |
1626 | ||
1627 | case C_STRTAG: | |
1628 | case C_UNTAG: | |
1629 | case C_ENTAG: | |
1630 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1631 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
e09c5e26 JK |
1632 | |
1633 | /* Some compilers try to be helpful by inventing "fake" | |
1634 | names for anonymous enums, structures, and unions, like | |
1635 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1636 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
1637 | if (SYMBOL_NAME(sym) != NULL | |
1638 | && *SYMBOL_NAME(sym) != '~' | |
1639 | && *SYMBOL_NAME(sym) != '.') | |
1640 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = | |
1641 | concat (SYMBOL_NAME (sym), NULL); | |
1642 | ||
c438b3af | 1643 | add_symbol_to_list (sym, &file_symbols); |
bd5635a1 RP |
1644 | break; |
1645 | ||
1646 | default: | |
1647 | break; | |
1648 | } | |
1649 | } | |
1650 | return sym; | |
1651 | } | |
1652 | \f | |
7f4c8595 | 1653 | /* Decode a coff type specifier; return the type that is meant. */ |
bd5635a1 | 1654 | |
7f4c8595 | 1655 | static struct type * |
bd5635a1 RP |
1656 | decode_type (cs, c_type, aux) |
1657 | register struct coff_symbol *cs; | |
1658 | unsigned int c_type; | |
dcc35536 | 1659 | register union internal_auxent *aux; |
bd5635a1 RP |
1660 | { |
1661 | register struct type *type = 0; | |
1662 | unsigned int new_c_type; | |
1663 | ||
1664 | if (c_type & ~N_BTMASK) | |
1665 | { | |
1666 | new_c_type = DECREF (c_type); | |
1667 | if (ISPTR (c_type)) | |
1668 | { | |
1669 | type = decode_type (cs, new_c_type, aux); | |
1670 | type = lookup_pointer_type (type); | |
1671 | } | |
1672 | else if (ISFCN (c_type)) | |
1673 | { | |
1674 | type = decode_type (cs, new_c_type, aux); | |
1675 | type = lookup_function_type (type); | |
1676 | } | |
1677 | else if (ISARY (c_type)) | |
1678 | { | |
1679 | int i, n; | |
1680 | register unsigned short *dim; | |
a8a69e63 | 1681 | struct type *base_type, *index_type, *range_type; |
bd5635a1 RP |
1682 | |
1683 | /* Define an array type. */ | |
1684 | /* auxent refers to array, not base type */ | |
6988f5c0 | 1685 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1686 | cs->c_naux = 0; |
bd5635a1 RP |
1687 | |
1688 | /* shift the indices down */ | |
1689 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1690 | i = 1; | |
1691 | n = dim[0]; | |
1692 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1693 | *dim = *(dim + 1); | |
1694 | *dim = 0; | |
1695 | ||
bd5635a1 | 1696 | base_type = decode_type (cs, new_c_type, aux); |
85f0a848 | 1697 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); |
a8a69e63 FF |
1698 | range_type = |
1699 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1700 | type = | |
1701 | create_array_type ((struct type *) NULL, base_type, range_type); | |
bd5635a1 RP |
1702 | } |
1703 | return type; | |
1704 | } | |
1705 | ||
f70be3e4 JG |
1706 | /* Reference to existing type. This only occurs with the |
1707 | struct, union, and enum types. EPI a29k coff | |
1708 | fakes us out by producing aux entries with a nonzero | |
1709 | x_tagndx for definitions of structs, unions, and enums, so we | |
117f631e ILT |
1710 | have to check the c_sclass field. SCO 3.2v4 cc gets confused |
1711 | with pointers to pointers to defined structs, and generates | |
1712 | negative x_tagndx fields. */ | |
e64fbb3a | 1713 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
bd5635a1 | 1714 | { |
117f631e ILT |
1715 | if (cs->c_sclass != C_STRTAG |
1716 | && cs->c_sclass != C_UNTAG | |
1717 | && cs->c_sclass != C_ENTAG | |
1718 | && aux->x_sym.x_tagndx.l >= 0) | |
f70be3e4 JG |
1719 | { |
1720 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1721 | return type; | |
7f4c8595 SS |
1722 | } |
1723 | else | |
1724 | { | |
f70be3e4 JG |
1725 | complain (&tagndx_bad_complaint, cs->c_name); |
1726 | /* And fall through to decode_base_type... */ | |
1727 | } | |
bd5635a1 RP |
1728 | } |
1729 | ||
1730 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1731 | } | |
1732 | ||
1733 | /* Decode a coff type specifier for function definition; | |
1734 | return the type that the function returns. */ | |
1735 | ||
7f4c8595 | 1736 | static struct type * |
bd5635a1 RP |
1737 | decode_function_type (cs, c_type, aux) |
1738 | register struct coff_symbol *cs; | |
1739 | unsigned int c_type; | |
dcc35536 | 1740 | register union internal_auxent *aux; |
bd5635a1 | 1741 | { |
6988f5c0 | 1742 | if (aux->x_sym.x_tagndx.l == 0) |
e64fbb3a | 1743 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
bd5635a1 RP |
1744 | |
1745 | return decode_type (cs, DECREF (c_type), aux); | |
1746 | } | |
1747 | \f | |
1748 | /* basic C types */ | |
1749 | ||
7f4c8595 | 1750 | static struct type * |
bd5635a1 RP |
1751 | decode_base_type (cs, c_type, aux) |
1752 | register struct coff_symbol *cs; | |
1753 | unsigned int c_type; | |
dcc35536 | 1754 | register union internal_auxent *aux; |
bd5635a1 RP |
1755 | { |
1756 | struct type *type; | |
1757 | ||
1758 | switch (c_type) | |
1759 | { | |
1760 | case T_NULL: | |
1761 | /* shows up with "void (*foo)();" structure members */ | |
318bf84f | 1762 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 | 1763 | |
8aa13b87 JK |
1764 | #if 0 |
1765 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
bd5635a1 RP |
1766 | #ifdef T_ARG |
1767 | case T_ARG: | |
1768 | /* Shows up in DGUX, I think. Not sure where. */ | |
318bf84f | 1769 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ |
bd5635a1 | 1770 | #endif |
8aa13b87 | 1771 | #endif /* 0 */ |
bd5635a1 RP |
1772 | |
1773 | #ifdef T_VOID | |
1774 | case T_VOID: | |
1775 | /* Intel 960 COFF has this symbol and meaning. */ | |
318bf84f | 1776 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1777 | #endif |
1778 | ||
1779 | case T_CHAR: | |
318bf84f | 1780 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
bd5635a1 RP |
1781 | |
1782 | case T_SHORT: | |
318bf84f | 1783 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
bd5635a1 RP |
1784 | |
1785 | case T_INT: | |
318bf84f | 1786 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
bd5635a1 RP |
1787 | |
1788 | case T_LONG: | |
318bf84f | 1789 | return lookup_fundamental_type (current_objfile, FT_LONG); |
bd5635a1 RP |
1790 | |
1791 | case T_FLOAT: | |
318bf84f | 1792 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
bd5635a1 RP |
1793 | |
1794 | case T_DOUBLE: | |
318bf84f | 1795 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
bd5635a1 RP |
1796 | |
1797 | case T_STRUCT: | |
e64fbb3a | 1798 | if (cs->c_naux != 1) |
bd5635a1 RP |
1799 | { |
1800 | /* anonymous structure type */ | |
1801 | type = coff_alloc_type (cs->c_symnum); | |
1802 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
e09c5e26 JK |
1803 | TYPE_NAME (type) = NULL; |
1804 | /* This used to set the tag to "<opaque>". But I think setting it | |
1805 | to NULL is right, and the printing code can print it as | |
1806 | "struct {...}". */ | |
1807 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1808 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1809 | TYPE_LENGTH (type) = 0; |
1810 | TYPE_FIELDS (type) = 0; | |
1811 | TYPE_NFIELDS (type) = 0; | |
1812 | } | |
1813 | else | |
1814 | { | |
318bf84f | 1815 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1816 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1817 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1818 | } |
1819 | return type; | |
1820 | ||
1821 | case T_UNION: | |
e64fbb3a | 1822 | if (cs->c_naux != 1) |
bd5635a1 RP |
1823 | { |
1824 | /* anonymous union type */ | |
1825 | type = coff_alloc_type (cs->c_symnum); | |
e09c5e26 JK |
1826 | TYPE_NAME (type) = NULL; |
1827 | /* This used to set the tag to "<opaque>". But I think setting it | |
1828 | to NULL is right, and the printing code can print it as | |
1829 | "union {...}". */ | |
1830 | TYPE_TAG_NAME (type) = NULL; | |
be8303da | 1831 | INIT_CPLUS_SPECIFIC(type); |
f1d77e90 | 1832 | TYPE_LENGTH (type) = 0; |
bd5635a1 RP |
1833 | TYPE_FIELDS (type) = 0; |
1834 | TYPE_NFIELDS (type) = 0; | |
1835 | } | |
1836 | else | |
1837 | { | |
318bf84f | 1838 | type = coff_read_struct_type (cs->c_symnum, |
bd5635a1 | 1839 | aux->x_sym.x_misc.x_lnsz.x_size, |
be8303da | 1840 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
bd5635a1 RP |
1841 | } |
1842 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1843 | return type; | |
1844 | ||
1845 | case T_ENUM: | |
e09c5e26 JK |
1846 | if (cs->c_naux != 1) |
1847 | { | |
1848 | /* anonymous enum type */ | |
1849 | type = coff_alloc_type (cs->c_symnum); | |
1850 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1851 | TYPE_NAME (type) = NULL; | |
1852 | /* This used to set the tag to "<opaque>". But I think setting it | |
1853 | to NULL is right, and the printing code can print it as | |
1854 | "enum {...}". */ | |
1855 | TYPE_TAG_NAME (type) = NULL; | |
1856 | TYPE_LENGTH (type) = 0; | |
1857 | TYPE_FIELDS (type) = 0; | |
1858 | TYPE_NFIELDS(type) = 0; | |
1859 | } | |
1860 | else | |
1861 | { | |
1862 | type = coff_read_enum_type (cs->c_symnum, | |
1863 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1864 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1865 | } | |
1866 | return type; | |
bd5635a1 RP |
1867 | |
1868 | case T_MOE: | |
1869 | /* shouldn't show up here */ | |
1870 | break; | |
1871 | ||
1872 | case T_UCHAR: | |
318bf84f | 1873 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
bd5635a1 RP |
1874 | |
1875 | case T_USHORT: | |
318bf84f | 1876 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
bd5635a1 RP |
1877 | |
1878 | case T_UINT: | |
318bf84f | 1879 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
bd5635a1 RP |
1880 | |
1881 | case T_ULONG: | |
318bf84f | 1882 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
bd5635a1 | 1883 | } |
7e258d18 | 1884 | complain (&unexpected_type_complaint, cs->c_name); |
318bf84f | 1885 | return lookup_fundamental_type (current_objfile, FT_VOID); |
bd5635a1 RP |
1886 | } |
1887 | \f | |
1888 | /* This page contains subroutines of read_type. */ | |
1889 | ||
7f4c8595 SS |
1890 | /* Read the description of a structure (or union type) and return an |
1891 | object describing the type. */ | |
bd5635a1 RP |
1892 | |
1893 | static struct type * | |
318bf84f | 1894 | coff_read_struct_type (index, length, lastsym) |
bd5635a1 RP |
1895 | int index; |
1896 | int length; | |
1897 | int lastsym; | |
1898 | { | |
1899 | struct nextfield | |
1900 | { | |
1901 | struct nextfield *next; | |
1902 | struct field field; | |
1903 | }; | |
1904 | ||
1905 | register struct type *type; | |
1906 | register struct nextfield *list = 0; | |
1907 | struct nextfield *new; | |
1908 | int nfields = 0; | |
1909 | register int n; | |
1910 | char *name; | |
bd5635a1 RP |
1911 | struct coff_symbol member_sym; |
1912 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
1913 | struct internal_syment sub_sym; |
1914 | union internal_auxent sub_aux; | |
bd5635a1 RP |
1915 | int done = 0; |
1916 | ||
1917 | type = coff_alloc_type (index); | |
1918 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
be8303da | 1919 | INIT_CPLUS_SPECIFIC(type); |
bd5635a1 RP |
1920 | TYPE_LENGTH (type) = length; |
1921 | ||
1922 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1923 | { | |
1924 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1925 | name = ms->c_name; | |
de9bef49 | 1926 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
1927 | |
1928 | switch (ms->c_sclass) | |
1929 | { | |
1930 | case C_MOS: | |
1931 | case C_MOU: | |
1932 | ||
1933 | /* Get space to record the next field's data. */ | |
1934 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1935 | new->next = list; | |
1936 | list = new; | |
1937 | ||
1938 | /* Save the data. */ | |
ab93997d JK |
1939 | list->field.name = |
1940 | obsavestring (name, | |
1941 | strlen (name), | |
1942 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
1943 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); |
1944 | list->field.bitpos = 8 * ms->c_value; | |
1945 | list->field.bitsize = 0; | |
1946 | nfields++; | |
1947 | break; | |
1948 | ||
1949 | case C_FIELD: | |
1950 | ||
1951 | /* Get space to record the next field's data. */ | |
1952 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1953 | new->next = list; | |
1954 | list = new; | |
1955 | ||
1956 | /* Save the data. */ | |
ab93997d JK |
1957 | list->field.name = |
1958 | obsavestring (name, | |
1959 | strlen (name), | |
1960 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
1961 | list->field.type = decode_type (ms, ms->c_type, &sub_aux); |
1962 | list->field.bitpos = ms->c_value; | |
1963 | list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
1964 | nfields++; | |
1965 | break; | |
1966 | ||
1967 | case C_EOS: | |
1968 | done = 1; | |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | /* Now create the vector of fields, and record how big it is. */ | |
1973 | ||
1974 | TYPE_NFIELDS (type) = nfields; | |
1975 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 1976 | TYPE_ALLOC (type, sizeof (struct field) * nfields); |
bd5635a1 RP |
1977 | |
1978 | /* Copy the saved-up fields into the field vector. */ | |
1979 | ||
1980 | for (n = nfields; list; list = list->next) | |
1981 | TYPE_FIELD (type, --n) = list->field; | |
1982 | ||
1983 | return type; | |
1984 | } | |
1985 | \f | |
1986 | /* Read a definition of an enumeration type, | |
1987 | and create and return a suitable type object. | |
1988 | Also defines the symbols that represent the values of the type. */ | |
1989 | ||
61a7292f | 1990 | /* ARGSUSED */ |
bd5635a1 | 1991 | static struct type * |
318bf84f | 1992 | coff_read_enum_type (index, length, lastsym) |
bd5635a1 RP |
1993 | int index; |
1994 | int length; | |
1995 | int lastsym; | |
1996 | { | |
1997 | register struct symbol *sym; | |
1998 | register struct type *type; | |
1999 | int nsyms = 0; | |
2000 | int done = 0; | |
c438b3af | 2001 | struct pending **symlist; |
bd5635a1 RP |
2002 | struct coff_symbol member_sym; |
2003 | register struct coff_symbol *ms = &member_sym; | |
dcc35536 JG |
2004 | struct internal_syment sub_sym; |
2005 | union internal_auxent sub_aux; | |
c438b3af JK |
2006 | struct pending *osyms, *syms; |
2007 | int o_nsyms; | |
bd5635a1 RP |
2008 | register int n; |
2009 | char *name; | |
bd5635a1 RP |
2010 | |
2011 | type = coff_alloc_type (index); | |
2012 | if (within_function) | |
c438b3af | 2013 | symlist = &local_symbols; |
bd5635a1 | 2014 | else |
c438b3af | 2015 | symlist = &file_symbols; |
bd5635a1 | 2016 | osyms = *symlist; |
c438b3af | 2017 | o_nsyms = osyms ? osyms->nsyms : 0; |
bd5635a1 RP |
2018 | |
2019 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2020 | { | |
2021 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2022 | name = ms->c_name; | |
de9bef49 | 2023 | name = EXTERNAL_NAME (name, current_objfile->obfd); |
bd5635a1 RP |
2024 | |
2025 | switch (ms->c_sclass) | |
2026 | { | |
2027 | case C_MOE: | |
ab93997d JK |
2028 | sym = (struct symbol *) obstack_alloc |
2029 | (¤t_objfile->symbol_obstack, | |
2030 | sizeof (struct symbol)); | |
4ed3a9ea | 2031 | memset (sym, 0, sizeof (struct symbol)); |
bd5635a1 | 2032 | |
ab93997d JK |
2033 | SYMBOL_NAME (sym) = |
2034 | obsavestring (name, strlen (name), | |
2035 | ¤t_objfile->symbol_obstack); | |
bd5635a1 RP |
2036 | SYMBOL_CLASS (sym) = LOC_CONST; |
2037 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2038 | SYMBOL_VALUE (sym) = ms->c_value; | |
c438b3af | 2039 | add_symbol_to_list (sym, symlist); |
bd5635a1 RP |
2040 | nsyms++; |
2041 | break; | |
2042 | ||
2043 | case C_EOS: | |
2044 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2045 | up the count of how many symbols to read. So stop | |
2046 | on .eos. */ | |
2047 | done = 1; | |
2048 | break; | |
2049 | } | |
2050 | } | |
2051 | ||
2052 | /* Now fill in the fields of the type-structure. */ | |
2053 | ||
f2c365f5 | 2054 | if (length > 0) |
7f4c8595 | 2055 | TYPE_LENGTH (type) = length; |
f2c365f5 | 2056 | else |
7f4c8595 | 2057 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ |
bd5635a1 RP |
2058 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2059 | TYPE_NFIELDS (type) = nsyms; | |
2060 | TYPE_FIELDS (type) = (struct field *) | |
85f0a848 | 2061 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); |
bd5635a1 RP |
2062 | |
2063 | /* Find the symbols for the values and put them into the type. | |
2064 | The symbols can be found in the symlist that we put them on | |
2065 | to cause them to be defined. osyms contains the old value | |
2066 | of that symlist; everything up to there was defined by us. */ | |
c438b3af JK |
2067 | /* Note that we preserve the order of the enum constants, so |
2068 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2069 | FOO, not LAST_THING. */ | |
bd5635a1 | 2070 | |
c438b3af | 2071 | for (syms = *symlist, n = 0; syms; syms = syms->next) |
bd5635a1 | 2072 | { |
c438b3af | 2073 | int j = 0; |
7f4c8595 | 2074 | |
c438b3af JK |
2075 | if (syms == osyms) |
2076 | j = o_nsyms; | |
2077 | for (; j < syms->nsyms; j++,n++) | |
2078 | { | |
2079 | struct symbol *xsym = syms->symbol[j]; | |
2080 | SYMBOL_TYPE (xsym) = type; | |
2081 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2082 | TYPE_FIELD_VALUE (type, n) = 0; | |
2083 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2084 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2085 | } | |
2086 | if (syms == osyms) | |
2087 | break; | |
bd5635a1 | 2088 | } |
c438b3af | 2089 | |
bd5635a1 RP |
2090 | return type; |
2091 | } | |
2092 | ||
85f0a848 FF |
2093 | struct section_offsets * |
2094 | coff_symfile_offsets (objfile, addr) | |
2095 | struct objfile *objfile; | |
2096 | CORE_ADDR addr; | |
2097 | { | |
b5b186a2 SS |
2098 | struct section_offsets *section_offsets; |
2099 | int i; | |
4d57c599 JK |
2100 | |
2101 | objfile->num_sections = SECT_OFF_MAX; | |
b5b186a2 SS |
2102 | section_offsets = (struct section_offsets *) |
2103 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2104 | sizeof (struct section_offsets) |
2105 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
b5b186a2 SS |
2106 | |
2107 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2108 | ANOFFSET (section_offsets, i) = addr; | |
2109 | ||
2110 | return section_offsets; | |
85f0a848 FF |
2111 | } |
2112 | ||
7f4c8595 | 2113 | /* Register our ability to parse symbols for coff BFD files. */ |
bd5635a1 RP |
2114 | |
2115 | static struct sym_fns coff_sym_fns = | |
2116 | { | |
0eed42de | 2117 | bfd_target_coff_flavour, |
80d68b1d FF |
2118 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2119 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2120 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2121 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
85f0a848 | 2122 | coff_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
80d68b1d | 2123 | NULL /* next: pointer to next struct sym_fns */ |
bd5635a1 RP |
2124 | }; |
2125 | ||
2126 | void | |
2127 | _initialize_coffread () | |
2128 | { | |
7f4c8595 | 2129 | add_symtab_fns (&coff_sym_fns); |
bd5635a1 | 2130 | } |