Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
197e01b6 | 2 | Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
6aba47ca | 3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 |
c5aa993b | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "demangle.h" | |
26 | #include "breakpoint.h" | |
27 | ||
28 | #include "bfd.h" | |
04ea0df1 | 29 | #include "gdb_obstack.h" |
c906108c SS |
30 | |
31 | #include "gdb_string.h" | |
32 | #include <ctype.h> | |
33 | ||
34 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
35 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
c906108c SS |
36 | #include "objfiles.h" |
37 | #include "buildsym.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "stabsread.h" | |
40 | #include "complaints.h" | |
41 | #include "target.h" | |
6ec4c4bd | 42 | #include "gdb_assert.h" |
fe898f56 | 43 | #include "block.h" |
de4f826b | 44 | #include "dictionary.h" |
c906108c | 45 | |
1b6bc7e0 CF |
46 | #include "coff-pe-read.h" |
47 | ||
a14ed312 | 48 | extern void _initialize_coffread (void); |
392a587b | 49 | |
c5aa993b JM |
50 | struct coff_symfile_info |
51 | { | |
52 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
53 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
c906108c | 54 | |
c5aa993b JM |
55 | CORE_ADDR textaddr; /* Addr of .text section. */ |
56 | unsigned int textsize; /* Size of .text section. */ | |
57 | struct stab_section_list *stabsects; /* .stab sections. */ | |
58 | asection *stabstrsect; /* Section pointer for .stab section */ | |
59 | char *stabstrdata; | |
60 | }; | |
c906108c SS |
61 | |
62 | /* Translate an external name string into a user-visible name. */ | |
63 | #define EXTERNAL_NAME(string, abfd) \ | |
64 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
65 | ||
66 | /* To be an sdb debug type, type must have at least a basic or primary | |
67 | derived type. Using this rather than checking against T_NULL is | |
68 | said to prevent core dumps if we try to operate on Michael Bloom | |
69 | dbx-in-coff file. */ | |
70 | ||
71 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
72 | ||
c906108c SS |
73 | /* Core address of start and end of text of current source file. |
74 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
75 | ||
76 | static CORE_ADDR current_source_start_addr; | |
77 | static CORE_ADDR current_source_end_addr; | |
78 | ||
79 | /* The addresses of the symbol table stream and number of symbols | |
80 | of the object file we are reading (as copied into core). */ | |
81 | ||
82 | static bfd *nlist_bfd_global; | |
83 | static int nlist_nsyms_global; | |
84 | ||
c906108c SS |
85 | |
86 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ | |
87 | ||
88 | static char *temp_sym; | |
89 | static char *temp_aux; | |
90 | ||
91 | /* Local variables that hold the shift and mask values for the | |
92 | COFF file that we are currently reading. These come back to us | |
93 | from BFD, and are referenced by their macro names, as well as | |
94 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
95 | macros from include/coff/internal.h . */ | |
96 | ||
c5aa993b JM |
97 | static unsigned local_n_btmask; |
98 | static unsigned local_n_btshft; | |
99 | static unsigned local_n_tmask; | |
100 | static unsigned local_n_tshift; | |
c906108c SS |
101 | |
102 | #define N_BTMASK local_n_btmask | |
103 | #define N_BTSHFT local_n_btshft | |
104 | #define N_TMASK local_n_tmask | |
105 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 106 | |
c906108c SS |
107 | /* Local variables that hold the sizes in the file of various COFF structures. |
108 | (We only need to know this to read them from the file -- BFD will then | |
109 | translate the data in them, into `internal_xxx' structs in the right | |
110 | byte order, alignment, etc.) */ | |
111 | ||
c5aa993b JM |
112 | static unsigned local_linesz; |
113 | static unsigned local_symesz; | |
114 | static unsigned local_auxesz; | |
c906108c SS |
115 | |
116 | /* This is set if this is a PE format file. */ | |
117 | ||
118 | static int pe_file; | |
119 | ||
120 | /* Chain of typedefs of pointers to empty struct/union types. | |
121 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
122 | ||
123 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
124 | ||
c906108c SS |
125 | /* Simplified internal version of coff symbol table information */ |
126 | ||
c5aa993b JM |
127 | struct coff_symbol |
128 | { | |
129 | char *c_name; | |
130 | int c_symnum; /* symbol number of this entry */ | |
131 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
132 | long c_value; | |
133 | int c_sclass; | |
134 | int c_secnum; | |
135 | unsigned int c_type; | |
136 | }; | |
c906108c | 137 | |
a14ed312 | 138 | extern void stabsread_clear_cache (void); |
7be570e7 | 139 | |
a14ed312 | 140 | static struct type *coff_read_struct_type (int, int, int); |
c906108c | 141 | |
a14ed312 KB |
142 | static struct type *decode_base_type (struct coff_symbol *, |
143 | unsigned int, union internal_auxent *); | |
c906108c | 144 | |
a14ed312 KB |
145 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
146 | union internal_auxent *); | |
c906108c | 147 | |
a14ed312 KB |
148 | static struct type *decode_function_type (struct coff_symbol *, |
149 | unsigned int, | |
150 | union internal_auxent *); | |
c906108c | 151 | |
a14ed312 | 152 | static struct type *coff_read_enum_type (int, int, int); |
c906108c | 153 | |
a14ed312 KB |
154 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
155 | union internal_auxent *, | |
156 | struct objfile *); | |
c906108c | 157 | |
a14ed312 | 158 | static void patch_opaque_types (struct symtab *); |
c906108c | 159 | |
a14ed312 | 160 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 161 | |
a14ed312 | 162 | static void free_linetab (void); |
c906108c | 163 | |
74b7792f AC |
164 | static void free_linetab_cleanup (void *ignore); |
165 | ||
a14ed312 | 166 | static int init_lineno (bfd *, long, int); |
c906108c | 167 | |
a14ed312 | 168 | static char *getsymname (struct internal_syment *); |
c906108c | 169 | |
a14ed312 | 170 | static char *coff_getfilename (union internal_auxent *); |
c906108c | 171 | |
a14ed312 | 172 | static void free_stringtab (void); |
c906108c | 173 | |
74b7792f AC |
174 | static void free_stringtab_cleanup (void *ignore); |
175 | ||
a14ed312 | 176 | static int init_stringtab (bfd *, long); |
c906108c | 177 | |
a14ed312 KB |
178 | static void read_one_sym (struct coff_symbol *, |
179 | struct internal_syment *, union internal_auxent *); | |
c906108c | 180 | |
a14ed312 | 181 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
182 | \f |
183 | /* We are called once per section from coff_symfile_read. We | |
184 | need to examine each section we are passed, check to see | |
185 | if it is something we are interested in processing, and | |
186 | if so, stash away some access information for the section. | |
187 | ||
188 | FIXME: The section names should not be hardwired strings (what | |
189 | should they be? I don't think most object file formats have enough | |
190 | section flags to specify what kind of debug section it is | |
191 | -kingdon). */ | |
192 | ||
193 | static void | |
12b9c64f | 194 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 195 | { |
52f0bd74 | 196 | struct coff_symfile_info *csi; |
c906108c SS |
197 | const char *name; |
198 | ||
199 | csi = (struct coff_symfile_info *) csip; | |
200 | name = bfd_get_section_name (abfd, sectp); | |
cb137aa5 | 201 | if (DEPRECATED_STREQ (name, ".text")) |
c906108c SS |
202 | { |
203 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
204 | csi->textsize += bfd_section_size (abfd, sectp); | |
205 | } | |
206 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
207 | { | |
208 | csi->textsize += bfd_section_size (abfd, sectp); | |
209 | } | |
cb137aa5 | 210 | else if (DEPRECATED_STREQ (name, ".stabstr")) |
c906108c SS |
211 | { |
212 | csi->stabstrsect = sectp; | |
213 | } | |
214 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
215 | { | |
216 | const char *s; | |
217 | ||
218 | /* We can have multiple .stab sections if linked with | |
219 | --split-by-reloc. */ | |
220 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 221 | if (!isdigit (*s)) |
c906108c SS |
222 | break; |
223 | if (*s == '\0') | |
224 | { | |
225 | struct stab_section_list *n, **pn; | |
226 | ||
227 | n = ((struct stab_section_list *) | |
228 | xmalloc (sizeof (struct stab_section_list))); | |
229 | n->section = sectp; | |
230 | n->next = NULL; | |
231 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
232 | ; | |
233 | *pn = n; | |
234 | ||
235 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
236 | in coff_symfile_read, at which point we no longer need |
237 | the information. */ | |
b8c9b27d | 238 | make_cleanup (xfree, n); |
c906108c SS |
239 | } |
240 | } | |
241 | } | |
242 | ||
243 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 244 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 245 | |
c5aa993b JM |
246 | struct find_targ_sec_arg |
247 | { | |
248 | int targ_index; | |
249 | asection **resultp; | |
250 | }; | |
c906108c | 251 | |
c5aa993b | 252 | static void |
12b9c64f | 253 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 254 | { |
c5aa993b | 255 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c906108c SS |
256 | if (sect->target_index == args->targ_index) |
257 | *args->resultp = sect; | |
258 | } | |
259 | ||
fbcebcb1 DJ |
260 | /* Return the bfd_section that CS points to. */ |
261 | static struct bfd_section* | |
262 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
263 | { |
264 | asection *sect = NULL; | |
265 | struct find_targ_sec_arg args; | |
c906108c SS |
266 | |
267 | args.targ_index = cs->c_secnum; | |
268 | args.resultp = § | |
269 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
270 | return sect; |
271 | } | |
272 | ||
273 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
274 | static int | |
275 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
276 | { | |
277 | asection *sect = cs_to_bfd_section (cs, objfile); | |
05cfdb42 DJ |
278 | if (sect == NULL) |
279 | return SECT_OFF_TEXT (objfile); | |
280 | return sect->index; | |
c906108c SS |
281 | } |
282 | ||
283 | /* Return the address of the section of a COFF symbol. */ | |
284 | ||
a14ed312 | 285 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
286 | |
287 | static CORE_ADDR | |
fba45db2 | 288 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
289 | { |
290 | asection *sect = NULL; | |
291 | struct find_targ_sec_arg args; | |
292 | CORE_ADDR addr = 0; | |
293 | ||
294 | args.targ_index = cs->c_secnum; | |
295 | args.resultp = § | |
296 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
297 | if (sect != NULL) | |
298 | addr = bfd_get_section_vma (objfile->obfd, sect); | |
299 | return addr; | |
300 | } | |
301 | ||
302 | /* Look up a coff type-number index. Return the address of the slot | |
303 | where the type for that index is stored. | |
304 | The type-number is in INDEX. | |
305 | ||
306 | This can be used for finding the type associated with that index | |
307 | or for associating a new type with the index. */ | |
308 | ||
309 | static struct type ** | |
aa1ee363 | 310 | coff_lookup_type (int index) |
c906108c SS |
311 | { |
312 | if (index >= type_vector_length) | |
313 | { | |
314 | int old_vector_length = type_vector_length; | |
315 | ||
316 | type_vector_length *= 2; | |
c5aa993b | 317 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
318 | type_vector_length = index * 2; |
319 | ||
320 | type_vector = (struct type **) | |
321 | xrealloc ((char *) type_vector, | |
322 | type_vector_length * sizeof (struct type *)); | |
323 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 324 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
325 | } |
326 | return &type_vector[index]; | |
327 | } | |
328 | ||
329 | /* Make sure there is a type allocated for type number index | |
330 | and return the type object. | |
331 | This can create an empty (zeroed) type object. */ | |
332 | ||
333 | static struct type * | |
fba45db2 | 334 | coff_alloc_type (int index) |
c906108c | 335 | { |
52f0bd74 AC |
336 | struct type **type_addr = coff_lookup_type (index); |
337 | struct type *type = *type_addr; | |
c906108c SS |
338 | |
339 | /* If we are referring to a type not known at all yet, | |
340 | allocate an empty type for it. | |
341 | We will fill it in later if we find out how. */ | |
342 | if (type == NULL) | |
343 | { | |
344 | type = alloc_type (current_objfile); | |
345 | *type_addr = type; | |
346 | } | |
347 | return type; | |
348 | } | |
349 | \f | |
c906108c SS |
350 | /* Start a new symtab for a new source file. |
351 | This is called when a COFF ".file" symbol is seen; | |
352 | it indicates the start of data for one original source file. */ | |
353 | ||
354 | static void | |
fba45db2 | 355 | coff_start_symtab (char *name) |
c906108c SS |
356 | { |
357 | start_symtab ( | |
c5aa993b JM |
358 | /* We fill in the filename later. start_symtab puts |
359 | this pointer into last_source_file and we put it in | |
360 | subfiles->name, which end_symtab frees; that's why | |
361 | it must be malloc'd. */ | |
362 | savestring (name, strlen (name)), | |
363 | /* We never know the directory name for COFF. */ | |
364 | NULL, | |
365 | /* The start address is irrelevant, since we set | |
366 | last_source_start_addr in coff_end_symtab. */ | |
367 | 0); | |
c906108c | 368 | record_debugformat ("COFF"); |
c906108c SS |
369 | } |
370 | ||
371 | /* Save the vital information from when starting to read a file, | |
372 | for use when closing off the current file. | |
373 | NAME is the file name the symbols came from, START_ADDR is the first | |
374 | text address for the file, and SIZE is the number of bytes of text. */ | |
375 | ||
376 | static void | |
fba45db2 | 377 | complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c SS |
378 | { |
379 | if (last_source_file != NULL) | |
b8c9b27d | 380 | xfree (last_source_file); |
c906108c SS |
381 | last_source_file = savestring (name, strlen (name)); |
382 | current_source_start_addr = start_addr; | |
383 | current_source_end_addr = start_addr + size; | |
c906108c SS |
384 | } |
385 | ||
386 | /* Finish the symbol definitions for one main source file, | |
387 | close off all the lexical contexts for that file | |
388 | (creating struct block's for them), then make the | |
389 | struct symtab for that file and put it in the list of all such. */ | |
390 | ||
391 | static void | |
fba45db2 | 392 | coff_end_symtab (struct objfile *objfile) |
c906108c SS |
393 | { |
394 | struct symtab *symtab; | |
395 | ||
396 | last_source_start_addr = current_source_start_addr; | |
397 | ||
44c75fb3 | 398 | symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
399 | |
400 | if (symtab != NULL) | |
401 | free_named_symtabs (symtab->filename); | |
402 | ||
403 | /* Reinitialize for beginning of new file. */ | |
c906108c SS |
404 | last_source_file = NULL; |
405 | } | |
406 | \f | |
fbcebcb1 DJ |
407 | static struct minimal_symbol * |
408 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
409 | enum minimal_symbol_type type, int section, | |
410 | struct objfile *objfile) | |
c906108c | 411 | { |
fbcebcb1 | 412 | struct bfd_section *bfd_section; |
c906108c | 413 | /* We don't want TDESC entry points in the minimal symbol table */ |
fbcebcb1 DJ |
414 | if (cs->c_name[0] == '@') |
415 | return NULL; | |
c906108c | 416 | |
fbcebcb1 DJ |
417 | bfd_section = cs_to_bfd_section (cs, objfile); |
418 | return prim_record_minimal_symbol_and_info (cs->c_name, address, type, | |
419 | NULL, section, bfd_section, objfile); | |
c906108c SS |
420 | } |
421 | \f | |
422 | /* coff_symfile_init () | |
423 | is the coff-specific initialization routine for reading symbols. | |
424 | It is passed a struct objfile which contains, among other things, | |
425 | the BFD for the file whose symbols are being read, and a slot for | |
426 | a pointer to "private data" which we fill with cookies and other | |
427 | treats for coff_symfile_read (). | |
428 | ||
429 | We will only be called if this is a COFF or COFF-like file. | |
430 | BFD handles figuring out the format of the file, and code in symtab.c | |
431 | uses BFD's determination to vector to us. | |
432 | ||
433 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
434 | ||
435 | static void | |
fba45db2 | 436 | coff_symfile_init (struct objfile *objfile) |
c906108c SS |
437 | { |
438 | /* Allocate struct to keep track of stab reading. */ | |
0a6ddd08 | 439 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
7936743b | 440 | xmalloc (sizeof (struct dbx_symfile_info)); |
c906108c | 441 | |
0a6ddd08 | 442 | memset (objfile->deprecated_sym_stab_info, 0, |
12b9c64f | 443 | sizeof (struct dbx_symfile_info)); |
c906108c SS |
444 | |
445 | /* Allocate struct to keep track of the symfile */ | |
0a6ddd08 | 446 | objfile->deprecated_sym_private = xmalloc (sizeof (struct coff_symfile_info)); |
c906108c | 447 | |
0a6ddd08 | 448 | memset (objfile->deprecated_sym_private, 0, sizeof (struct coff_symfile_info)); |
c906108c SS |
449 | |
450 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
451 | find this causes a significant slowdown in gdb then we could | |
452 | set it in the debug symbol readers only when necessary. */ | |
453 | objfile->flags |= OBJF_REORDERED; | |
454 | ||
455 | init_entry_point_info (objfile); | |
456 | } | |
457 | ||
458 | /* This function is called for every section; it finds the outer limits | |
459 | of the line table (minimum and maximum file offset) so that the | |
460 | mainline code can read the whole thing for efficiency. */ | |
461 | ||
c906108c | 462 | static void |
7be0c536 | 463 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
464 | { |
465 | struct coff_symfile_info *info; | |
466 | int size, count; | |
467 | file_ptr offset, maxoff; | |
468 | ||
469 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
470 | count = asect->lineno_count; | |
471 | /* End of warning */ | |
472 | ||
473 | if (count == 0) | |
474 | return; | |
475 | size = count * local_linesz; | |
476 | ||
c5aa993b | 477 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
478 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
479 | offset = asect->line_filepos; | |
480 | /* End of warning */ | |
481 | ||
482 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
483 | info->min_lineno_offset = offset; | |
484 | ||
485 | maxoff = offset + size; | |
486 | if (maxoff > info->max_lineno_offset) | |
487 | info->max_lineno_offset = maxoff; | |
488 | } | |
489 | ||
490 | ||
491 | /* The BFD for this file -- only good while we're actively reading | |
492 | symbols into a psymtab or a symtab. */ | |
493 | ||
494 | static bfd *symfile_bfd; | |
495 | ||
496 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
497 | ||
c906108c | 498 | static void |
fba45db2 | 499 | coff_symfile_read (struct objfile *objfile, int mainline) |
c906108c SS |
500 | { |
501 | struct coff_symfile_info *info; | |
502 | struct dbx_symfile_info *dbxinfo; | |
503 | bfd *abfd = objfile->obfd; | |
504 | coff_data_type *cdata = coff_data (abfd); | |
505 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 506 | int val; |
745b8ca0 | 507 | unsigned int num_symbols; |
c906108c SS |
508 | int symtab_offset; |
509 | int stringtab_offset; | |
7134143f | 510 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 511 | int stabstrsize; |
c2d11a7d JM |
512 | int len; |
513 | char * target; | |
514 | ||
0a6ddd08 AC |
515 | info = (struct coff_symfile_info *) objfile->deprecated_sym_private; |
516 | dbxinfo = objfile->deprecated_sym_stab_info; | |
c5aa993b | 517 | symfile_bfd = abfd; /* Kludge for swap routines */ |
c906108c SS |
518 | |
519 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
520 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
521 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
522 | stringtab_offset = symtab_offset + /* String table file offset */ | |
523 | num_symbols * cdata->local_symesz; | |
c906108c SS |
524 | |
525 | /* Set a few file-statics that give us specific information about | |
526 | the particular COFF file format we're reading. */ | |
c906108c SS |
527 | local_n_btmask = cdata->local_n_btmask; |
528 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 529 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 530 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
531 | local_linesz = cdata->local_linesz; |
532 | local_symesz = cdata->local_symesz; | |
533 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
534 | |
535 | /* Allocate space for raw symbol and aux entries, based on their | |
536 | space requirements as reported by BFD. */ | |
537 | temp_sym = (char *) xmalloc | |
c5aa993b | 538 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 539 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 540 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
541 | |
542 | /* We need to know whether this is a PE file, because in PE files, | |
543 | unlike standard COFF files, symbol values are stored as offsets | |
544 | from the section address, rather than as absolute addresses. | |
545 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
546 | this problem. */ | |
0d06e24b JM |
547 | pe_file = |
548 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
549 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c SS |
550 | |
551 | /* End of warning */ | |
552 | ||
c906108c SS |
553 | info->min_lineno_offset = 0; |
554 | info->max_lineno_offset = 0; | |
c906108c | 555 | |
ebeb39fe JB |
556 | /* Only read line number information if we have symbols. |
557 | ||
558 | On Windows NT, some of the system's DLL's have sections with | |
559 | PointerToLinenumbers fields that are non-zero, but point at | |
560 | random places within the image file. (In the case I found, | |
561 | KERNEL32.DLL's .text section has a line number info pointer that | |
562 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
563 | ||
564 | However, these DLL's also have no symbols. The line number | |
565 | tables are meaningless without symbols. And in fact, GDB never | |
566 | uses the line number information unless there are symbols. So we | |
567 | can avoid spurious error messages (and maybe run a little | |
568 | faster!) by not even reading the line number table unless we have | |
569 | symbols. */ | |
570 | if (num_symbols > 0) | |
571 | { | |
572 | /* Read the line number table, all at once. */ | |
573 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
574 | ||
575 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
576 | val = init_lineno (abfd, info->min_lineno_offset, | |
577 | info->max_lineno_offset - info->min_lineno_offset); | |
578 | if (val < 0) | |
8a3fe4f8 | 579 | error (_("\"%s\": error reading line numbers."), name); |
ebeb39fe | 580 | } |
c906108c SS |
581 | |
582 | /* Now read the string table, all at once. */ | |
583 | ||
74b7792f | 584 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
585 | val = init_stringtab (abfd, stringtab_offset); |
586 | if (val < 0) | |
3d263c1d | 587 | error (_("\"%s\": can't get string table"), name); |
c906108c SS |
588 | |
589 | init_minimal_symbol_collection (); | |
7134143f | 590 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
591 | |
592 | /* Now that the executable file is positioned at symbol table, | |
593 | process it and define symbols accordingly. */ | |
594 | ||
96baa820 | 595 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 596 | |
c906108c SS |
597 | /* Install any minimal symbols that have been collected as the current |
598 | minimal symbols for this objfile. */ | |
599 | ||
600 | install_minimal_symbols (objfile); | |
601 | ||
7134143f DJ |
602 | /* Free the installed minimal symbol data. */ |
603 | do_cleanups (cleanup_minimal_symbols); | |
604 | ||
fea25152 BF |
605 | /* If we are reinitializing, or if we have not loaded syms yet, |
606 | empty the psymtab. "mainline" is cleared so the *_read_psymtab | |
607 | functions do not all re-initialize it. */ | |
608 | if (mainline) | |
609 | { | |
610 | init_psymbol_list (objfile, 0); | |
611 | mainline = 0; | |
612 | } | |
613 | ||
12b9c64f | 614 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
615 | |
616 | if (info->stabsects) | |
617 | { | |
c5aa993b | 618 | if (!info->stabstrsect) |
b83266a0 | 619 | { |
3d263c1d BI |
620 | error (_("The debugging information in `%s' is corrupted.\n" |
621 | "The file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 622 | name); |
b83266a0 SS |
623 | } |
624 | ||
c906108c | 625 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 626 | bfd_get_section_contents? */ |
c906108c SS |
627 | bfd_seek (abfd, abfd->where, 0); |
628 | ||
629 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
630 | ||
631 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
632 | mainline, |
633 | info->textaddr, info->textsize, | |
634 | info->stabsects, | |
635 | info->stabstrsect->filepos, stabstrsize); | |
636 | } | |
c5edf76a | 637 | if (dwarf2_has_info (objfile)) |
42a076f0 EZ |
638 | { |
639 | /* DWARF2 sections. */ | |
640 | dwarf2_build_psymtabs (objfile, mainline); | |
641 | } | |
c906108c | 642 | |
fea25152 BF |
643 | dwarf2_build_frame_info (objfile); |
644 | ||
c906108c SS |
645 | do_cleanups (back_to); |
646 | } | |
647 | ||
648 | static void | |
fba45db2 | 649 | coff_new_init (struct objfile *ignore) |
c906108c SS |
650 | { |
651 | } | |
652 | ||
653 | /* Perform any local cleanups required when we are done with a particular | |
654 | objfile. I.E, we are in the process of discarding all symbol information | |
655 | for an objfile, freeing up all memory held for it, and unlinking the | |
656 | objfile struct from the global list of known objfiles. */ | |
657 | ||
658 | static void | |
fba45db2 | 659 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 660 | { |
0a6ddd08 | 661 | if (objfile->deprecated_sym_private != NULL) |
c906108c | 662 | { |
0a6ddd08 | 663 | xfree (objfile->deprecated_sym_private); |
c906108c | 664 | } |
7be570e7 JM |
665 | |
666 | /* Let stabs reader clean up */ | |
667 | stabsread_clear_cache (); | |
fe3e1990 DJ |
668 | |
669 | dwarf2_free_objfile (objfile); | |
c906108c | 670 | } |
c906108c | 671 | \f |
c5aa993b | 672 | |
c906108c SS |
673 | /* Given pointers to a symbol table in coff style exec file, |
674 | analyze them and create struct symtab's describing the symbols. | |
675 | NSYMS is the number of symbols in the symbol table. | |
676 | We read them one at a time using read_one_sym (). */ | |
677 | ||
678 | static void | |
fba45db2 KB |
679 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
680 | struct objfile *objfile) | |
c906108c | 681 | { |
52f0bd74 | 682 | struct context_stack *new; |
c906108c | 683 | struct coff_symbol coff_symbol; |
52f0bd74 | 684 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
685 | static struct internal_syment main_sym; |
686 | static union internal_auxent main_aux; | |
687 | struct coff_symbol fcn_cs_saved; | |
688 | static struct internal_syment fcn_sym_saved; | |
689 | static union internal_auxent fcn_aux_saved; | |
690 | struct symtab *s; | |
691 | /* A .file is open. */ | |
692 | int in_source_file = 0; | |
693 | int next_file_symnum = -1; | |
694 | /* Name of the current file. */ | |
695 | char *filestring = ""; | |
696 | int depth = 0; | |
697 | int fcn_first_line = 0; | |
b9179dbc | 698 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
699 | int fcn_last_line = 0; |
700 | int fcn_start_addr = 0; | |
701 | long fcn_line_ptr = 0; | |
702 | int val; | |
703 | CORE_ADDR tmpaddr; | |
05cfdb42 | 704 | struct minimal_symbol *msym; |
c906108c SS |
705 | |
706 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
707 | it's hard to know I've really worked around it. The fix should be | |
708 | harmless, anyway). The symptom of the bug is that the first | |
709 | fread (in read_one_sym), will (in my example) actually get data | |
710 | from file offset 268, when the fseek was to 264 (and ftell shows | |
711 | 264). This causes all hell to break loose. I was unable to | |
712 | reproduce this on a short test program which operated on the same | |
713 | file, performing (I think) the same sequence of operations. | |
714 | ||
715 | It stopped happening when I put in this (former) rewind(). | |
716 | ||
717 | FIXME: Find out if this has been reported to Sun, whether it has | |
718 | been fixed in a later release, etc. */ | |
719 | ||
720 | bfd_seek (objfile->obfd, 0, 0); | |
721 | ||
722 | /* Position to read the symbol table. */ | |
723 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); | |
724 | if (val < 0) | |
725 | perror_with_name (objfile->name); | |
726 | ||
727 | current_objfile = objfile; | |
728 | nlist_bfd_global = objfile->obfd; | |
729 | nlist_nsyms_global = nsyms; | |
730 | last_source_file = NULL; | |
731 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); | |
732 | ||
c5aa993b | 733 | if (type_vector) /* Get rid of previous one */ |
b8c9b27d | 734 | xfree (type_vector); |
c906108c SS |
735 | type_vector_length = 160; |
736 | type_vector = (struct type **) | |
737 | xmalloc (type_vector_length * sizeof (struct type *)); | |
738 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
739 | ||
740 | coff_start_symtab (""); | |
741 | ||
742 | symnum = 0; | |
743 | while (symnum < nsyms) | |
744 | { | |
745 | QUIT; /* Make this command interruptable. */ | |
746 | ||
747 | read_one_sym (cs, &main_sym, &main_aux); | |
748 | ||
749 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
750 | { | |
751 | if (last_source_file) | |
752 | coff_end_symtab (objfile); | |
753 | ||
754 | coff_start_symtab ("_globals_"); | |
755 | complete_symtab ("_globals_", 0, 0); | |
756 | /* done with all files, everything from here on out is globals */ | |
757 | } | |
758 | ||
759 | /* Special case for file with type declarations only, no text. */ | |
760 | if (!last_source_file && SDB_TYPE (cs->c_type) | |
761 | && cs->c_secnum == N_DEBUG) | |
762 | complete_symtab (filestring, 0, 0); | |
763 | ||
764 | /* Typedefs should not be treated as symbol definitions. */ | |
765 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
766 | { | |
767 | /* Record all functions -- external and static -- in minsyms. */ | |
fbcebcb1 | 768 | int section = cs_to_section (cs, objfile); |
b8fbeb18 | 769 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
fbcebcb1 | 770 | record_minimal_symbol (cs, tmpaddr, mst_text, section, objfile); |
c906108c SS |
771 | |
772 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
773 | fcn_start_addr = tmpaddr; | |
774 | fcn_cs_saved = *cs; | |
775 | fcn_sym_saved = main_sym; | |
776 | fcn_aux_saved = main_aux; | |
777 | continue; | |
778 | } | |
779 | ||
780 | switch (cs->c_sclass) | |
781 | { | |
c5aa993b JM |
782 | case C_EFCN: |
783 | case C_EXTDEF: | |
784 | case C_ULABEL: | |
785 | case C_USTATIC: | |
786 | case C_LINE: | |
787 | case C_ALIAS: | |
788 | case C_HIDDEN: | |
3d263c1d | 789 | complaint (&symfile_complaints, _("Bad n_sclass for symbol %s"), |
23136709 | 790 | cs->c_name); |
c5aa993b | 791 | break; |
c906108c | 792 | |
c5aa993b JM |
793 | case C_FILE: |
794 | /* c_value field contains symnum of next .file entry in table | |
795 | or symnum of first global after last .file. */ | |
796 | next_file_symnum = cs->c_value; | |
797 | if (cs->c_naux > 0) | |
798 | filestring = coff_getfilename (&main_aux); | |
799 | else | |
800 | filestring = ""; | |
801 | ||
802 | /* Complete symbol table for last object file | |
803 | containing debugging information. */ | |
804 | if (last_source_file) | |
805 | { | |
806 | coff_end_symtab (objfile); | |
807 | coff_start_symtab (filestring); | |
808 | } | |
809 | in_source_file = 1; | |
810 | break; | |
c906108c SS |
811 | |
812 | /* C_LABEL is used for labels and static functions. Including | |
813 | it here allows gdb to see static functions when no debug | |
814 | info is available. */ | |
c5aa993b JM |
815 | case C_LABEL: |
816 | /* However, labels within a function can make weird backtraces, | |
817 | so filter them out (from phdm@macqel.be). */ | |
818 | if (within_function) | |
819 | break; | |
820 | case C_STAT: | |
821 | case C_THUMBLABEL: | |
822 | case C_THUMBSTAT: | |
823 | case C_THUMBSTATFUNC: | |
824 | if (cs->c_name[0] == '.') | |
825 | { | |
cb137aa5 | 826 | if (DEPRECATED_STREQ (cs->c_name, ".text")) |
c5aa993b | 827 | { |
c906108c SS |
828 | /* FIXME: don't wire in ".text" as section name |
829 | or symbol name! */ | |
830 | /* Check for in_source_file deals with case of | |
831 | a file with debugging symbols | |
832 | followed by a later file with no symbols. */ | |
833 | if (in_source_file) | |
834 | complete_symtab (filestring, | |
b8fbeb18 | 835 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c SS |
836 | main_aux.x_scn.x_scnlen); |
837 | in_source_file = 0; | |
838 | } | |
c5aa993b | 839 | /* flush rest of '.' symbols */ |
c906108c | 840 | break; |
c5aa993b JM |
841 | } |
842 | else if (!SDB_TYPE (cs->c_type) | |
843 | && cs->c_name[0] == 'L' | |
844 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
845 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
846 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
847 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
848 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
849 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
850 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
851 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
852 | /* At least on a 3b1, gcc generates swbeg and string labels | |
853 | that look like this. Ignore them. */ | |
854 | break; | |
855 | /* fall in for static symbols that don't start with '.' */ | |
856 | case C_THUMBEXT: | |
857 | case C_THUMBEXTFUNC: | |
858 | case C_EXT: | |
859 | { | |
860 | /* Record it in the minimal symbols regardless of | |
861 | SDB_TYPE. This parallels what we do for other debug | |
862 | formats, and probably is needed to make | |
863 | print_address_symbolic work right without the (now | |
864 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 865 | |
c5aa993b JM |
866 | enum minimal_symbol_type ms_type; |
867 | int sec; | |
c906108c | 868 | |
c5aa993b JM |
869 | if (cs->c_secnum == N_UNDEF) |
870 | { | |
871 | /* This is a common symbol. See if the target | |
872 | environment knows where it has been relocated to. */ | |
873 | CORE_ADDR reladdr; | |
874 | if (target_lookup_symbol (cs->c_name, &reladdr)) | |
875 | { | |
876 | /* Error in lookup; ignore symbol. */ | |
877 | break; | |
878 | } | |
879 | tmpaddr = reladdr; | |
880 | /* The address has already been relocated; make sure that | |
881 | objfile_relocate doesn't relocate it again. */ | |
882 | sec = -2; | |
883 | ms_type = cs->c_sclass == C_EXT | |
884 | || cs->c_sclass == C_THUMBEXT ? | |
885 | mst_bss : mst_file_bss; | |
886 | } | |
182d43bc EZ |
887 | else if (cs->c_secnum == N_ABS) |
888 | { | |
889 | /* Use the correct minimal symbol type (and don't | |
890 | relocate) for absolute values. */ | |
891 | ms_type = mst_abs; | |
892 | sec = cs_to_section (cs, objfile); | |
893 | tmpaddr = cs->c_value; | |
894 | } | |
c5aa993b JM |
895 | else |
896 | { | |
05cfdb42 | 897 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5aa993b JM |
898 | sec = cs_to_section (cs, objfile); |
899 | tmpaddr = cs->c_value; | |
182d43bc EZ |
900 | /* Statics in a PE file also get relocated */ |
901 | if (cs->c_sclass == C_EXT | |
902 | || cs->c_sclass == C_THUMBEXTFUNC | |
903 | || cs->c_sclass == C_THUMBEXT | |
904 | || (pe_file && (cs->c_sclass == C_STAT))) | |
96baa820 | 905 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 906 | |
05cfdb42 | 907 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 908 | { |
c5aa993b JM |
909 | ms_type = |
910 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
911 | || cs->c_sclass == C_THUMBEXT ? | |
912 | mst_text : mst_file_text; | |
260edbc2 UW |
913 | tmpaddr = gdbarch_smash_text_address |
914 | (current_gdbarch, tmpaddr); | |
b8fbeb18 | 915 | } |
05cfdb42 DJ |
916 | else if (bfd_section->flags & SEC_ALLOC |
917 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 918 | { |
c5aa993b JM |
919 | ms_type = |
920 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
921 | mst_data : mst_file_data; | |
34e924c0 | 922 | } |
05cfdb42 | 923 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 924 | { |
c5aa993b JM |
925 | ms_type = |
926 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
05cfdb42 | 927 | mst_bss : mst_file_bss; |
34e924c0 EZ |
928 | } |
929 | else | |
930 | ms_type = mst_unknown; | |
c5aa993b | 931 | } |
c906108c | 932 | |
05cfdb42 DJ |
933 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, sec, objfile); |
934 | if (msym) | |
95f1da47 UW |
935 | gdbarch_coff_make_msymbol_special |
936 | (current_gdbarch, cs->c_sclass, msym); | |
fbcebcb1 | 937 | |
c5aa993b JM |
938 | if (SDB_TYPE (cs->c_type)) |
939 | { | |
940 | struct symbol *sym; | |
941 | sym = process_coff_symbol | |
96baa820 | 942 | (cs, &main_aux, objfile); |
c5aa993b JM |
943 | SYMBOL_VALUE (sym) = tmpaddr; |
944 | SYMBOL_SECTION (sym) = sec; | |
945 | } | |
946 | } | |
947 | break; | |
948 | ||
949 | case C_FCN: | |
cb137aa5 | 950 | if (DEPRECATED_STREQ (cs->c_name, ".bf")) |
c5aa993b JM |
951 | { |
952 | within_function = 1; | |
953 | ||
954 | /* value contains address of first non-init type code */ | |
955 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
956 | contains line number of '{' } */ | |
957 | if (cs->c_naux != 1) | |
23136709 | 958 | complaint (&symfile_complaints, |
3d263c1d | 959 | _("`.bf' symbol %d has no aux entry"), cs->c_symnum); |
c5aa993b JM |
960 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
961 | fcn_first_line_addr = cs->c_value; | |
962 | ||
963 | /* Might want to check that locals are 0 and | |
964 | context_stack_depth is zero, and complain if not. */ | |
965 | ||
966 | depth = 0; | |
967 | new = push_context (depth, fcn_start_addr); | |
968 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
969 | new->name = | |
96baa820 | 970 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); |
c5aa993b | 971 | } |
cb137aa5 | 972 | else if (DEPRECATED_STREQ (cs->c_name, ".ef")) |
c5aa993b | 973 | { |
b9179dbc | 974 | if (!within_function) |
8a3fe4f8 | 975 | error (_("Bad coff function information.")); |
c5aa993b JM |
976 | /* the value of .ef is the address of epilogue code; |
977 | not useful for gdb. */ | |
978 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
979 | contains number of lines to '}' */ | |
980 | ||
981 | if (context_stack_depth <= 0) | |
982 | { /* We attempted to pop an empty context stack */ | |
23136709 | 983 | complaint (&symfile_complaints, |
3d263c1d | 984 | _("`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d"), |
23136709 | 985 | cs->c_symnum); |
c5aa993b JM |
986 | within_function = 0; |
987 | break; | |
c906108c | 988 | } |
c5aa993b JM |
989 | |
990 | new = pop_context (); | |
991 | /* Stack must be empty now. */ | |
992 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 993 | { |
23136709 | 994 | complaint (&symfile_complaints, |
3d263c1d | 995 | _("Unmatched .ef symbol(s) ignored starting at symnum %d"), |
23136709 | 996 | cs->c_symnum); |
c5aa993b JM |
997 | within_function = 0; |
998 | break; | |
c906108c | 999 | } |
c5aa993b JM |
1000 | if (cs->c_naux != 1) |
1001 | { | |
23136709 | 1002 | complaint (&symfile_complaints, |
3d263c1d | 1003 | _("`.ef' symbol %d has no aux entry"), cs->c_symnum); |
c5aa993b JM |
1004 | fcn_last_line = 0x7FFFFFFF; |
1005 | } | |
1006 | else | |
1007 | { | |
1008 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1009 | } | |
1010 | /* fcn_first_line is the line number of the opening '{'. | |
1011 | Do not record it - because it would affect gdb's idea | |
1012 | of the line number of the first statement of the function - | |
1013 | except for one-line functions, for which it is also the line | |
1014 | number of all the statements and of the closing '}', and | |
1015 | for which we do not have any other statement-line-number. */ | |
1016 | if (fcn_last_line == 1) | |
1017 | record_line (current_subfile, fcn_first_line, | |
1018 | fcn_first_line_addr); | |
1019 | else | |
1020 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, | |
d4f3574e | 1021 | objfile); |
c906108c | 1022 | |
c5aa993b JM |
1023 | finish_block (new->name, &local_symbols, new->old_blocks, |
1024 | new->start_addr, | |
c906108c | 1025 | #if defined (FUNCTION_EPILOGUE_SIZE) |
c5aa993b JM |
1026 | /* This macro should be defined only on |
1027 | machines where the | |
1028 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1029 | field is always zero. | |
1030 | So use the .bf record information that | |
1031 | points to the epilogue and add the size | |
1032 | of the epilogue. */ | |
1033 | cs->c_value | |
1034 | + FUNCTION_EPILOGUE_SIZE | |
b8fbeb18 | 1035 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1036 | #else |
c5aa993b JM |
1037 | fcn_cs_saved.c_value |
1038 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b8fbeb18 | 1039 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1040 | #endif |
c5aa993b JM |
1041 | objfile |
1042 | ); | |
1043 | within_function = 0; | |
1044 | } | |
1045 | break; | |
c906108c | 1046 | |
c5aa993b | 1047 | case C_BLOCK: |
cb137aa5 | 1048 | if (DEPRECATED_STREQ (cs->c_name, ".bb")) |
c5aa993b JM |
1049 | { |
1050 | tmpaddr = cs->c_value; | |
b8fbeb18 | 1051 | tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1052 | push_context (++depth, tmpaddr); |
1053 | } | |
cb137aa5 | 1054 | else if (DEPRECATED_STREQ (cs->c_name, ".eb")) |
c5aa993b JM |
1055 | { |
1056 | if (context_stack_depth <= 0) | |
1057 | { /* We attempted to pop an empty context stack */ | |
23136709 | 1058 | complaint (&symfile_complaints, |
3d263c1d | 1059 | _("`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d"), |
23136709 | 1060 | cs->c_symnum); |
c5aa993b JM |
1061 | break; |
1062 | } | |
c906108c | 1063 | |
c5aa993b JM |
1064 | new = pop_context (); |
1065 | if (depth-- != new->depth) | |
1066 | { | |
23136709 | 1067 | complaint (&symfile_complaints, |
3d263c1d | 1068 | _("Mismatched .eb symbol ignored starting at symnum %d"), |
23136709 | 1069 | symnum); |
c5aa993b JM |
1070 | break; |
1071 | } | |
1072 | if (local_symbols && context_stack_depth > 0) | |
1073 | { | |
1074 | tmpaddr = | |
b8fbeb18 | 1075 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1076 | /* Make a block for the local symbols within. */ |
1077 | finish_block (0, &local_symbols, new->old_blocks, | |
1078 | new->start_addr, tmpaddr, objfile); | |
1079 | } | |
1080 | /* Now pop locals of block just finished. */ | |
1081 | local_symbols = new->locals; | |
1082 | } | |
1083 | break; | |
c906108c | 1084 | |
c5aa993b | 1085 | default: |
96baa820 | 1086 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1087 | break; |
c906108c SS |
1088 | } |
1089 | } | |
1090 | ||
1b6bc7e0 CF |
1091 | if ((nsyms == 0) && (pe_file)) |
1092 | { | |
1093 | /* We've got no debugging symbols, but it's is a portable | |
1094 | executable, so try to read the export table */ | |
1095 | read_pe_exported_syms (objfile); | |
1096 | } | |
1097 | ||
c906108c SS |
1098 | if (last_source_file) |
1099 | coff_end_symtab (objfile); | |
1100 | ||
1101 | /* Patch up any opaque types (references to types that are not defined | |
1102 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1103 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1104 | patch_opaque_types (s); | |
1105 | ||
1106 | current_objfile = NULL; | |
1107 | } | |
1108 | \f | |
1109 | /* Routines for reading headers and symbols from executable. */ | |
1110 | ||
1111 | /* Read the next symbol, swap it, and return it in both internal_syment | |
1112 | form, and coff_symbol form. Also return its first auxent, if any, | |
1113 | in internal_auxent form, and skip any other auxents. */ | |
1114 | ||
1115 | static void | |
aa1ee363 AC |
1116 | read_one_sym (struct coff_symbol *cs, |
1117 | struct internal_syment *sym, | |
1118 | union internal_auxent *aux) | |
c906108c SS |
1119 | { |
1120 | int i; | |
3b016d57 | 1121 | bfd_size_type bytes; |
c906108c SS |
1122 | |
1123 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1124 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1125 | if (bytes != local_symesz) | |
1126 | error ("%s: error reading symbols", current_objfile->name); | |
c5aa993b | 1127 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1128 | cs->c_naux = sym->n_numaux & 0xff; |
1129 | if (cs->c_naux >= 1) | |
1130 | { | |
3b016d57 DJ |
1131 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1132 | if (bytes != local_auxesz) | |
1133 | error ("%s: error reading symbols", current_objfile->name); | |
c5aa993b JM |
1134 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
1135 | 0, cs->c_naux, (char *) aux); | |
1136 | /* If more than one aux entry, read past it (only the first aux | |
1137 | is important). */ | |
1138 | for (i = 1; i < cs->c_naux; i++) | |
3b016d57 DJ |
1139 | { |
1140 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1141 | if (bytes != local_auxesz) | |
1142 | error ("%s: error reading symbols", current_objfile->name); | |
1143 | } | |
c906108c SS |
1144 | } |
1145 | cs->c_name = getsymname (sym); | |
1146 | cs->c_value = sym->n_value; | |
1147 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1148 | cs->c_secnum = sym->n_scnum; | |
1149 | cs->c_type = (unsigned) sym->n_type; | |
1150 | if (!SDB_TYPE (cs->c_type)) | |
1151 | cs->c_type = 0; | |
1152 | ||
1153 | #if 0 | |
1154 | if (cs->c_sclass & 128) | |
3d263c1d | 1155 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1156 | #endif |
1157 | ||
1158 | symnum += 1 + cs->c_naux; | |
1159 | ||
1160 | /* The PE file format stores symbol values as offsets within the | |
1161 | section, rather than as absolute addresses. We correct that | |
1162 | here, if the symbol has an appropriate storage class. FIXME: We | |
1163 | should use BFD to read the symbols, rather than duplicating the | |
1164 | work here. */ | |
1165 | if (pe_file) | |
1166 | { | |
1167 | switch (cs->c_sclass) | |
1168 | { | |
1169 | case C_EXT: | |
1170 | case C_THUMBEXT: | |
1171 | case C_THUMBEXTFUNC: | |
1172 | case C_SECTION: | |
1173 | case C_NT_WEAK: | |
1174 | case C_STAT: | |
1175 | case C_THUMBSTAT: | |
1176 | case C_THUMBSTATFUNC: | |
1177 | case C_LABEL: | |
1178 | case C_THUMBLABEL: | |
1179 | case C_BLOCK: | |
1180 | case C_FCN: | |
1181 | case C_EFCN: | |
1182 | if (cs->c_secnum != 0) | |
1183 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1184 | break; | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | \f | |
1189 | /* Support for string table handling */ | |
1190 | ||
1191 | static char *stringtab = NULL; | |
1192 | ||
1193 | static int | |
fba45db2 | 1194 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1195 | { |
1196 | long length; | |
1197 | int val; | |
1198 | unsigned char lengthbuf[4]; | |
1199 | ||
1200 | free_stringtab (); | |
1201 | ||
1202 | /* If the file is stripped, the offset might be zero, indicating no | |
1203 | string table. Just return with `stringtab' set to null. */ | |
1204 | if (offset == 0) | |
1205 | return 0; | |
1206 | ||
1207 | if (bfd_seek (abfd, offset, 0) < 0) | |
1208 | return -1; | |
1209 | ||
3a42e9d0 | 1210 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1211 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1212 | |
c906108c SS |
1213 | /* If no string table is needed, then the file may end immediately |
1214 | after the symbols. Just return with `stringtab' set to null. */ | |
1215 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1216 | return 0; | |
1217 | ||
1218 | stringtab = (char *) xmalloc (length); | |
1219 | /* This is in target format (probably not very useful, and not currently | |
1220 | used), not host format. */ | |
1221 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
c5aa993b | 1222 | if (length == sizeof length) /* Empty table -- just the count */ |
c906108c SS |
1223 | return 0; |
1224 | ||
3a42e9d0 AM |
1225 | val = bfd_bread (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, |
1226 | abfd); | |
c906108c SS |
1227 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1228 | return -1; | |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static void | |
fba45db2 | 1234 | free_stringtab (void) |
c906108c SS |
1235 | { |
1236 | if (stringtab) | |
b8c9b27d | 1237 | xfree (stringtab); |
c906108c SS |
1238 | stringtab = NULL; |
1239 | } | |
1240 | ||
74b7792f AC |
1241 | static void |
1242 | free_stringtab_cleanup (void *ignore) | |
1243 | { | |
1244 | free_stringtab (); | |
1245 | } | |
1246 | ||
c906108c | 1247 | static char * |
fba45db2 | 1248 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1249 | { |
c5aa993b | 1250 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1251 | char *result; |
1252 | ||
1253 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1254 | { | |
1255 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1256 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1257 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1262 | buffer[SYMNMLEN] = '\0'; | |
1263 | result = buffer; | |
1264 | } | |
1265 | return result; | |
1266 | } | |
1267 | ||
1268 | /* Extract the file name from the aux entry of a C_FILE symbol. Return | |
1269 | only the last component of the name. Result is in static storage and | |
1270 | is only good for temporary use. */ | |
1271 | ||
1272 | static char * | |
fba45db2 | 1273 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1274 | { |
1275 | static char buffer[BUFSIZ]; | |
52f0bd74 | 1276 | char *temp; |
c906108c SS |
1277 | char *result; |
1278 | ||
1279 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1280 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1281 | else | |
1282 | { | |
1283 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1284 | buffer[FILNMLEN] = '\0'; | |
1285 | } | |
1286 | result = buffer; | |
1287 | ||
1288 | /* FIXME: We should not be throwing away the information about what | |
1289 | directory. It should go into dirname of the symtab, or some such | |
1290 | place. */ | |
1291 | if ((temp = strrchr (result, '/')) != NULL) | |
1292 | result = temp + 1; | |
1293 | return (result); | |
1294 | } | |
1295 | \f | |
1296 | /* Support for line number handling. */ | |
1297 | ||
1298 | static char *linetab = NULL; | |
1299 | static long linetab_offset; | |
1300 | static unsigned long linetab_size; | |
1301 | ||
1302 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1303 | external (unswapped) format in memory; we'll swap them as we enter | |
1304 | them into GDB's data structures. */ | |
c5aa993b | 1305 | |
c906108c | 1306 | static int |
fba45db2 | 1307 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1308 | { |
1309 | int val; | |
1310 | ||
1311 | linetab_offset = offset; | |
1312 | linetab_size = size; | |
1313 | ||
c5aa993b | 1314 | free_linetab (); |
c906108c SS |
1315 | |
1316 | if (size == 0) | |
1317 | return 0; | |
1318 | ||
1319 | if (bfd_seek (abfd, offset, 0) < 0) | |
1320 | return -1; | |
c5aa993b | 1321 | |
c906108c SS |
1322 | /* Allocate the desired table, plus a sentinel */ |
1323 | linetab = (char *) xmalloc (size + local_linesz); | |
1324 | ||
3a42e9d0 | 1325 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1326 | if (val != size) |
1327 | return -1; | |
1328 | ||
1329 | /* Terminate it with an all-zero sentinel record */ | |
1330 | memset (linetab + size, 0, local_linesz); | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static void | |
fba45db2 | 1336 | free_linetab (void) |
c906108c SS |
1337 | { |
1338 | if (linetab) | |
b8c9b27d | 1339 | xfree (linetab); |
c906108c SS |
1340 | linetab = NULL; |
1341 | } | |
1342 | ||
74b7792f AC |
1343 | static void |
1344 | free_linetab_cleanup (void *ignore) | |
1345 | { | |
1346 | free_linetab (); | |
1347 | } | |
1348 | ||
c906108c SS |
1349 | #if !defined (L_LNNO32) |
1350 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1351 | #endif | |
1352 | ||
1353 | static void | |
aa1ee363 AC |
1354 | enter_linenos (long file_offset, int first_line, |
1355 | int last_line, struct objfile *objfile) | |
c906108c | 1356 | { |
52f0bd74 | 1357 | char *rawptr; |
c906108c SS |
1358 | struct internal_lineno lptr; |
1359 | ||
1360 | if (!linetab) | |
c5aa993b | 1361 | return; |
c906108c SS |
1362 | if (file_offset < linetab_offset) |
1363 | { | |
23136709 | 1364 | complaint (&symfile_complaints, |
3d263c1d | 1365 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1366 | file_offset); |
c906108c SS |
1367 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1368 | return; | |
c5aa993b | 1369 | file_offset += linetab_offset; /* Try reading at that linetab offset */ |
c906108c | 1370 | } |
c5aa993b | 1371 | |
c906108c SS |
1372 | rawptr = &linetab[file_offset - linetab_offset]; |
1373 | ||
1374 | /* skip first line entry for each function */ | |
1375 | rawptr += local_linesz; | |
1376 | /* line numbers start at one for the first line of the function */ | |
1377 | first_line--; | |
1378 | ||
e6a8a7d2 EZ |
1379 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1380 | info), the next function's L_LNNO32 might not be zero, so don't | |
1381 | overstep the table's end in any case. */ | |
1382 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1383 | { |
1384 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1385 | rawptr += local_linesz; | |
e6a8a7d2 EZ |
1386 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
1387 | we exit. */ | |
c5aa993b JM |
1388 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
1389 | record_line (current_subfile, first_line + L_LNNO32 (&lptr), | |
1390 | lptr.l_addr.l_paddr | |
b8fbeb18 | 1391 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1392 | else |
1393 | break; | |
1394 | } | |
c906108c SS |
1395 | } |
1396 | \f | |
1397 | static void | |
fba45db2 | 1398 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1399 | { |
52f0bd74 AC |
1400 | struct type *target = TYPE_TARGET_TYPE (type); |
1401 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1402 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1403 | ||
1404 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1405 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1406 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); | |
1407 | ||
1408 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); | |
1409 | ||
1410 | if (TYPE_NAME (real_target)) | |
1411 | { | |
1412 | if (TYPE_NAME (target)) | |
b8c9b27d | 1413 | xfree (TYPE_NAME (target)); |
1754f103 | 1414 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), (char *)NULL); |
c906108c SS |
1415 | } |
1416 | } | |
1417 | ||
1418 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
1419 | so that they can be used to print out opaque data structures properly. */ | |
1420 | ||
1421 | static void | |
fba45db2 | 1422 | patch_opaque_types (struct symtab *s) |
c906108c | 1423 | { |
52f0bd74 | 1424 | struct block *b; |
de4f826b | 1425 | struct dict_iterator iter; |
52f0bd74 | 1426 | struct symbol *real_sym; |
c5aa993b | 1427 | |
c906108c SS |
1428 | /* Go through the per-file symbols only */ |
1429 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 1430 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1431 | { |
1432 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1433 | Remove syms from the chain when their types are stored, |
1434 | but search the whole chain, as there may be several syms | |
1435 | from different files with the same name. */ | |
c906108c | 1436 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && |
176620f1 | 1437 | SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN && |
c906108c SS |
1438 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && |
1439 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
1440 | { | |
aa1ee363 AC |
1441 | char *name = DEPRECATED_SYMBOL_NAME (real_sym); |
1442 | int hash = hashname (name); | |
1443 | struct symbol *sym, *prev; | |
c5aa993b | 1444 | |
c906108c SS |
1445 | prev = 0; |
1446 | for (sym = opaque_type_chain[hash]; sym;) | |
1447 | { | |
22abf04a | 1448 | if (name[0] == DEPRECATED_SYMBOL_NAME (sym)[0] && |
6314a349 | 1449 | strcmp (name + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0) |
c906108c SS |
1450 | { |
1451 | if (prev) | |
1452 | { | |
1453 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1454 | } | |
1455 | else | |
1456 | { | |
1457 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1458 | } | |
c5aa993b | 1459 | |
c906108c | 1460 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1461 | |
c906108c SS |
1462 | if (prev) |
1463 | { | |
1464 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | sym = opaque_type_chain[hash]; | |
1469 | } | |
1470 | } | |
1471 | else | |
1472 | { | |
1473 | prev = sym; | |
1474 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1475 | } | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | } | |
1480 | \f | |
1481 | static struct symbol * | |
aa1ee363 AC |
1482 | process_coff_symbol (struct coff_symbol *cs, |
1483 | union internal_auxent *aux, | |
fba45db2 | 1484 | struct objfile *objfile) |
c906108c | 1485 | { |
52f0bd74 | 1486 | struct symbol *sym |
4a146b47 | 1487 | = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 1488 | sizeof (struct symbol)); |
c906108c SS |
1489 | char *name; |
1490 | ||
1491 | memset (sym, 0, sizeof (struct symbol)); | |
1492 | name = cs->c_name; | |
1493 | name = EXTERNAL_NAME (name, objfile->obfd); | |
c906108c | 1494 | SYMBOL_LANGUAGE (sym) = language_auto; |
2de7ced7 | 1495 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
1496 | |
1497 | /* default assumptions */ | |
1498 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1499 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1500 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1501 | ||
1502 | if (ISFCN (cs->c_type)) | |
1503 | { | |
b8fbeb18 | 1504 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1505 | SYMBOL_TYPE (sym) = |
1506 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
c906108c SS |
1507 | |
1508 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1509 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT | |
1510 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1511 | add_symbol_to_list (sym, &file_symbols); | |
1512 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1513 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1514 | add_symbol_to_list (sym, &global_symbols); | |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1519 | switch (cs->c_sclass) | |
1520 | { | |
c5aa993b JM |
1521 | case C_NULL: |
1522 | break; | |
c906108c | 1523 | |
c5aa993b JM |
1524 | case C_AUTO: |
1525 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1526 | add_symbol_to_list (sym, &local_symbols); | |
1527 | break; | |
c906108c | 1528 | |
c5aa993b JM |
1529 | case C_THUMBEXT: |
1530 | case C_THUMBEXTFUNC: | |
1531 | case C_EXT: | |
1532 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1533 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1534 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1535 | add_symbol_to_list (sym, &global_symbols); |
1536 | break; | |
c906108c | 1537 | |
c5aa993b JM |
1538 | case C_THUMBSTAT: |
1539 | case C_THUMBSTATFUNC: | |
1540 | case C_STAT: | |
1541 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1542 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1543 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1544 | if (within_function) |
1545 | { | |
c906108c SS |
1546 | /* Static symbol of local scope */ |
1547 | add_symbol_to_list (sym, &local_symbols); | |
1548 | } | |
c5aa993b JM |
1549 | else |
1550 | { | |
c906108c SS |
1551 | /* Static symbol at top level of file */ |
1552 | add_symbol_to_list (sym, &file_symbols); | |
1553 | } | |
c5aa993b | 1554 | break; |
c906108c SS |
1555 | |
1556 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1557 | case C_GLBLREG: |
c906108c | 1558 | #endif |
c5aa993b JM |
1559 | case C_REG: |
1560 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
055d23b8 UW |
1561 | SYMBOL_VALUE (sym) = gdbarch_sdb_reg_to_regnum |
1562 | (current_gdbarch, cs->c_value); | |
c5aa993b JM |
1563 | add_symbol_to_list (sym, &local_symbols); |
1564 | break; | |
c906108c | 1565 | |
c5aa993b JM |
1566 | case C_THUMBLABEL: |
1567 | case C_LABEL: | |
1568 | break; | |
c906108c | 1569 | |
c5aa993b JM |
1570 | case C_ARG: |
1571 | SYMBOL_CLASS (sym) = LOC_ARG; | |
1572 | add_symbol_to_list (sym, &local_symbols); | |
c5aa993b | 1573 | break; |
c906108c | 1574 | |
c5aa993b JM |
1575 | case C_REGPARM: |
1576 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
055d23b8 UW |
1577 | SYMBOL_VALUE (sym) = gdbarch_sdb_reg_to_regnum |
1578 | (current_gdbarch, cs->c_value); | |
c5aa993b | 1579 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1580 | break; |
c906108c | 1581 | |
c5aa993b JM |
1582 | case C_TPDEF: |
1583 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1584 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
1585 | |
1586 | /* If type has no name, give it one */ | |
1587 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
1588 | { | |
1589 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1590 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1591 | { | |
1592 | /* If we are giving a name to a type such as "pointer to | |
1593 | foo" or "function returning foo", we better not set | |
1594 | the TYPE_NAME. If the program contains "typedef char | |
1595 | *caddr_t;", we don't want all variables of type char | |
1596 | * to print as caddr_t. This is not just a | |
1597 | consequence of GDB's type management; CC and GCC (at | |
1598 | least through version 2.4) both output variables of | |
1599 | either type char * or caddr_t with the type | |
1600 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1601 | compiler cleans this up it GDB is not ready for it | |
1602 | yet, but if it becomes ready we somehow need to | |
1603 | disable this check (without breaking the PCC/GCC2.4 | |
1604 | case). | |
1605 | ||
1606 | Sigh. | |
1607 | ||
1608 | Fortunately, this check seems not to be necessary | |
1609 | for anything except pointers or functions. */ | |
1610 | ; | |
1611 | } | |
1612 | else | |
1613 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
1754f103 | 1614 | concat (DEPRECATED_SYMBOL_NAME (sym), (char *)NULL); |
c5aa993b | 1615 | } |
c906108c | 1616 | |
c5aa993b JM |
1617 | /* Keep track of any type which points to empty structured type, |
1618 | so it can be filled from a definition from another file. A | |
1619 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1620 | empty structured type, though; the forward references | |
1621 | work themselves out via the magic of coff_lookup_type. */ | |
1622 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && | |
1623 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && | |
1624 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1625 | TYPE_CODE_UNDEF) | |
1626 | { | |
aa1ee363 | 1627 | int i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c906108c | 1628 | |
c5aa993b JM |
1629 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1630 | opaque_type_chain[i] = sym; | |
1631 | } | |
1632 | add_symbol_to_list (sym, &file_symbols); | |
1633 | break; | |
c906108c | 1634 | |
c5aa993b JM |
1635 | case C_STRTAG: |
1636 | case C_UNTAG: | |
1637 | case C_ENTAG: | |
1638 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1639 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1640 | |
1641 | /* Some compilers try to be helpful by inventing "fake" | |
1642 | names for anonymous enums, structures, and unions, like | |
1643 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1644 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
22abf04a DC |
1645 | if (DEPRECATED_SYMBOL_NAME (sym) != NULL |
1646 | && *DEPRECATED_SYMBOL_NAME (sym) != '~' | |
1647 | && *DEPRECATED_SYMBOL_NAME (sym) != '.') | |
c5aa993b | 1648 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
1754f103 | 1649 | concat (DEPRECATED_SYMBOL_NAME (sym), (char *)NULL); |
c5aa993b JM |
1650 | |
1651 | add_symbol_to_list (sym, &file_symbols); | |
1652 | break; | |
c906108c | 1653 | |
c5aa993b JM |
1654 | default: |
1655 | break; | |
c906108c SS |
1656 | } |
1657 | } | |
1658 | return sym; | |
1659 | } | |
1660 | \f | |
1661 | /* Decode a coff type specifier; return the type that is meant. */ | |
1662 | ||
1663 | static struct type * | |
aa1ee363 AC |
1664 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
1665 | union internal_auxent *aux) | |
c906108c | 1666 | { |
52f0bd74 | 1667 | struct type *type = 0; |
c906108c SS |
1668 | unsigned int new_c_type; |
1669 | ||
1670 | if (c_type & ~N_BTMASK) | |
1671 | { | |
1672 | new_c_type = DECREF (c_type); | |
1673 | if (ISPTR (c_type)) | |
1674 | { | |
1675 | type = decode_type (cs, new_c_type, aux); | |
1676 | type = lookup_pointer_type (type); | |
1677 | } | |
1678 | else if (ISFCN (c_type)) | |
1679 | { | |
1680 | type = decode_type (cs, new_c_type, aux); | |
1681 | type = lookup_function_type (type); | |
1682 | } | |
1683 | else if (ISARY (c_type)) | |
1684 | { | |
1685 | int i, n; | |
aa1ee363 | 1686 | unsigned short *dim; |
c906108c SS |
1687 | struct type *base_type, *index_type, *range_type; |
1688 | ||
1689 | /* Define an array type. */ | |
1690 | /* auxent refers to array, not base type */ | |
1691 | if (aux->x_sym.x_tagndx.l == 0) | |
1692 | cs->c_naux = 0; | |
1693 | ||
1694 | /* shift the indices down */ | |
1695 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1696 | i = 1; | |
1697 | n = dim[0]; | |
1698 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1699 | *dim = *(dim + 1); | |
1700 | *dim = 0; | |
1701 | ||
1702 | base_type = decode_type (cs, new_c_type, aux); | |
1703 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1704 | range_type = | |
1705 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1706 | type = | |
1707 | create_array_type ((struct type *) NULL, base_type, range_type); | |
1708 | } | |
1709 | return type; | |
1710 | } | |
1711 | ||
1712 | /* Reference to existing type. This only occurs with the | |
1713 | struct, union, and enum types. EPI a29k coff | |
1714 | fakes us out by producing aux entries with a nonzero | |
1715 | x_tagndx for definitions of structs, unions, and enums, so we | |
1716 | have to check the c_sclass field. SCO 3.2v4 cc gets confused | |
1717 | with pointers to pointers to defined structs, and generates | |
1718 | negative x_tagndx fields. */ | |
1719 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) | |
1720 | { | |
1721 | if (cs->c_sclass != C_STRTAG | |
1722 | && cs->c_sclass != C_UNTAG | |
1723 | && cs->c_sclass != C_ENTAG | |
1724 | && aux->x_sym.x_tagndx.l >= 0) | |
1725 | { | |
1726 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1727 | return type; | |
1728 | } | |
1729 | else | |
1730 | { | |
23136709 | 1731 | complaint (&symfile_complaints, |
3d263c1d | 1732 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1733 | cs->c_name); |
c906108c SS |
1734 | /* And fall through to decode_base_type... */ |
1735 | } | |
1736 | } | |
1737 | ||
1738 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1739 | } | |
1740 | ||
1741 | /* Decode a coff type specifier for function definition; | |
1742 | return the type that the function returns. */ | |
1743 | ||
1744 | static struct type * | |
aa1ee363 AC |
1745 | decode_function_type (struct coff_symbol *cs, unsigned int c_type, |
1746 | union internal_auxent *aux) | |
c906108c SS |
1747 | { |
1748 | if (aux->x_sym.x_tagndx.l == 0) | |
c5aa993b | 1749 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
c906108c SS |
1750 | |
1751 | return decode_type (cs, DECREF (c_type), aux); | |
1752 | } | |
1753 | \f | |
1754 | /* basic C types */ | |
1755 | ||
1756 | static struct type * | |
aa1ee363 AC |
1757 | decode_base_type (struct coff_symbol *cs, unsigned int c_type, |
1758 | union internal_auxent *aux) | |
c906108c SS |
1759 | { |
1760 | struct type *type; | |
1761 | ||
1762 | switch (c_type) | |
1763 | { | |
c5aa993b JM |
1764 | case T_NULL: |
1765 | /* shows up with "void (*foo)();" structure members */ | |
1766 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c | 1767 | |
c906108c | 1768 | #ifdef T_VOID |
c5aa993b JM |
1769 | case T_VOID: |
1770 | /* Intel 960 COFF has this symbol and meaning. */ | |
1771 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c SS |
1772 | #endif |
1773 | ||
c5aa993b JM |
1774 | case T_CHAR: |
1775 | return lookup_fundamental_type (current_objfile, FT_CHAR); | |
c906108c | 1776 | |
c5aa993b JM |
1777 | case T_SHORT: |
1778 | return lookup_fundamental_type (current_objfile, FT_SHORT); | |
c906108c | 1779 | |
c5aa993b JM |
1780 | case T_INT: |
1781 | return lookup_fundamental_type (current_objfile, FT_INTEGER); | |
c906108c | 1782 | |
c5aa993b JM |
1783 | case T_LONG: |
1784 | if (cs->c_sclass == C_FIELD | |
9a76efb6 UW |
1785 | && aux->x_sym.x_misc.x_lnsz.x_size |
1786 | > gdbarch_long_bit (current_gdbarch)) | |
c5aa993b JM |
1787 | return lookup_fundamental_type (current_objfile, FT_LONG_LONG); |
1788 | else | |
1789 | return lookup_fundamental_type (current_objfile, FT_LONG); | |
c906108c | 1790 | |
c5aa993b JM |
1791 | case T_FLOAT: |
1792 | return lookup_fundamental_type (current_objfile, FT_FLOAT); | |
c906108c | 1793 | |
c5aa993b JM |
1794 | case T_DOUBLE: |
1795 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); | |
c906108c | 1796 | |
c5aa993b JM |
1797 | case T_LNGDBL: |
1798 | return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT); | |
c906108c | 1799 | |
c5aa993b JM |
1800 | case T_STRUCT: |
1801 | if (cs->c_naux != 1) | |
1802 | { | |
1803 | /* anonymous structure type */ | |
1804 | type = coff_alloc_type (cs->c_symnum); | |
1805 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1806 | TYPE_NAME (type) = NULL; | |
1807 | /* This used to set the tag to "<opaque>". But I think setting it | |
1808 | to NULL is right, and the printing code can print it as | |
1809 | "struct {...}". */ | |
1810 | TYPE_TAG_NAME (type) = NULL; | |
1811 | INIT_CPLUS_SPECIFIC (type); | |
1812 | TYPE_LENGTH (type) = 0; | |
1813 | TYPE_FIELDS (type) = 0; | |
1814 | TYPE_NFIELDS (type) = 0; | |
1815 | } | |
1816 | else | |
1817 | { | |
1818 | type = coff_read_struct_type (cs->c_symnum, | |
1819 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1820 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1821 | } | |
1822 | return type; | |
c906108c | 1823 | |
c5aa993b JM |
1824 | case T_UNION: |
1825 | if (cs->c_naux != 1) | |
1826 | { | |
1827 | /* anonymous union type */ | |
1828 | type = coff_alloc_type (cs->c_symnum); | |
1829 | TYPE_NAME (type) = NULL; | |
1830 | /* This used to set the tag to "<opaque>". But I think setting it | |
1831 | to NULL is right, and the printing code can print it as | |
1832 | "union {...}". */ | |
1833 | TYPE_TAG_NAME (type) = NULL; | |
1834 | INIT_CPLUS_SPECIFIC (type); | |
1835 | TYPE_LENGTH (type) = 0; | |
1836 | TYPE_FIELDS (type) = 0; | |
1837 | TYPE_NFIELDS (type) = 0; | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1842 | aux->x_sym.x_misc.x_lnsz.x_size, |
c5aa993b JM |
1843 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1844 | } | |
1845 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1846 | return type; | |
c906108c | 1847 | |
c5aa993b JM |
1848 | case T_ENUM: |
1849 | if (cs->c_naux != 1) | |
1850 | { | |
1851 | /* anonymous enum type */ | |
1852 | type = coff_alloc_type (cs->c_symnum); | |
1853 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1854 | TYPE_NAME (type) = NULL; | |
1855 | /* This used to set the tag to "<opaque>". But I think setting it | |
1856 | to NULL is right, and the printing code can print it as | |
1857 | "enum {...}". */ | |
1858 | TYPE_TAG_NAME (type) = NULL; | |
1859 | TYPE_LENGTH (type) = 0; | |
1860 | TYPE_FIELDS (type) = 0; | |
1861 | TYPE_NFIELDS (type) = 0; | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | type = coff_read_enum_type (cs->c_symnum, | |
1866 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1867 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1868 | } | |
1869 | return type; | |
1870 | ||
1871 | case T_MOE: | |
1872 | /* shouldn't show up here */ | |
1873 | break; | |
c906108c | 1874 | |
c5aa993b JM |
1875 | case T_UCHAR: |
1876 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); | |
c906108c | 1877 | |
c5aa993b JM |
1878 | case T_USHORT: |
1879 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); | |
c906108c | 1880 | |
c5aa993b JM |
1881 | case T_UINT: |
1882 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); | |
c906108c | 1883 | |
c5aa993b JM |
1884 | case T_ULONG: |
1885 | if (cs->c_sclass == C_FIELD | |
9a76efb6 UW |
1886 | && aux->x_sym.x_misc.x_lnsz.x_size |
1887 | > gdbarch_long_bit (current_gdbarch)) | |
c5aa993b JM |
1888 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG); |
1889 | else | |
1890 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); | |
c906108c | 1891 | } |
3d263c1d | 1892 | complaint (&symfile_complaints, _("Unexpected type for symbol %s"), cs->c_name); |
c906108c SS |
1893 | return lookup_fundamental_type (current_objfile, FT_VOID); |
1894 | } | |
1895 | \f | |
1896 | /* This page contains subroutines of read_type. */ | |
1897 | ||
1898 | /* Read the description of a structure (or union type) and return an | |
1899 | object describing the type. */ | |
1900 | ||
1901 | static struct type * | |
fba45db2 | 1902 | coff_read_struct_type (int index, int length, int lastsym) |
c906108c SS |
1903 | { |
1904 | struct nextfield | |
1905 | { | |
1906 | struct nextfield *next; | |
1907 | struct field field; | |
1908 | }; | |
1909 | ||
52f0bd74 AC |
1910 | struct type *type; |
1911 | struct nextfield *list = 0; | |
c906108c SS |
1912 | struct nextfield *new; |
1913 | int nfields = 0; | |
52f0bd74 | 1914 | int n; |
c906108c SS |
1915 | char *name; |
1916 | struct coff_symbol member_sym; | |
52f0bd74 | 1917 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1918 | struct internal_syment sub_sym; |
1919 | union internal_auxent sub_aux; | |
1920 | int done = 0; | |
1921 | ||
1922 | type = coff_alloc_type (index); | |
1923 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 1924 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1925 | TYPE_LENGTH (type) = length; |
1926 | ||
1927 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1928 | { | |
1929 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1930 | name = ms->c_name; | |
1931 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
1932 | ||
1933 | switch (ms->c_sclass) | |
1934 | { | |
c5aa993b JM |
1935 | case C_MOS: |
1936 | case C_MOU: | |
1937 | ||
1938 | /* Get space to record the next field's data. */ | |
1939 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1940 | new->next = list; | |
1941 | list = new; | |
1942 | ||
1943 | /* Save the data. */ | |
1944 | list->field.name = | |
1945 | obsavestring (name, | |
1946 | strlen (name), | |
4a146b47 | 1947 | ¤t_objfile->objfile_obstack); |
c5aa993b JM |
1948 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); |
1949 | FIELD_BITPOS (list->field) = 8 * ms->c_value; | |
1950 | FIELD_BITSIZE (list->field) = 0; | |
01ad7f36 | 1951 | FIELD_STATIC_KIND (list->field) = 0; |
c5aa993b JM |
1952 | nfields++; |
1953 | break; | |
c906108c | 1954 | |
c5aa993b JM |
1955 | case C_FIELD: |
1956 | ||
1957 | /* Get space to record the next field's data. */ | |
1958 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1959 | new->next = list; | |
1960 | list = new; | |
1961 | ||
1962 | /* Save the data. */ | |
1963 | list->field.name = | |
1964 | obsavestring (name, | |
1965 | strlen (name), | |
4a146b47 | 1966 | ¤t_objfile->objfile_obstack); |
c5aa993b JM |
1967 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); |
1968 | FIELD_BITPOS (list->field) = ms->c_value; | |
1969 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
01ad7f36 | 1970 | FIELD_STATIC_KIND (list->field) = 0; |
c5aa993b JM |
1971 | nfields++; |
1972 | break; | |
c906108c | 1973 | |
c5aa993b JM |
1974 | case C_EOS: |
1975 | done = 1; | |
1976 | break; | |
c906108c SS |
1977 | } |
1978 | } | |
1979 | /* Now create the vector of fields, and record how big it is. */ | |
1980 | ||
1981 | TYPE_NFIELDS (type) = nfields; | |
1982 | TYPE_FIELDS (type) = (struct field *) | |
1983 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
1984 | ||
1985 | /* Copy the saved-up fields into the field vector. */ | |
1986 | ||
1987 | for (n = nfields; list; list = list->next) | |
1988 | TYPE_FIELD (type, --n) = list->field; | |
1989 | ||
1990 | return type; | |
1991 | } | |
1992 | \f | |
1993 | /* Read a definition of an enumeration type, | |
1994 | and create and return a suitable type object. | |
1995 | Also defines the symbols that represent the values of the type. */ | |
1996 | ||
c906108c | 1997 | static struct type * |
fba45db2 | 1998 | coff_read_enum_type (int index, int length, int lastsym) |
c906108c | 1999 | { |
52f0bd74 AC |
2000 | struct symbol *sym; |
2001 | struct type *type; | |
c906108c SS |
2002 | int nsyms = 0; |
2003 | int done = 0; | |
2004 | struct pending **symlist; | |
2005 | struct coff_symbol member_sym; | |
52f0bd74 | 2006 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2007 | struct internal_syment sub_sym; |
2008 | union internal_auxent sub_aux; | |
2009 | struct pending *osyms, *syms; | |
2010 | int o_nsyms; | |
52f0bd74 | 2011 | int n; |
c906108c SS |
2012 | char *name; |
2013 | int unsigned_enum = 1; | |
2014 | ||
2015 | type = coff_alloc_type (index); | |
2016 | if (within_function) | |
2017 | symlist = &local_symbols; | |
2018 | else | |
2019 | symlist = &file_symbols; | |
2020 | osyms = *symlist; | |
2021 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2022 | ||
2023 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2024 | { | |
2025 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2026 | name = ms->c_name; | |
2027 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
2028 | ||
2029 | switch (ms->c_sclass) | |
2030 | { | |
c5aa993b JM |
2031 | case C_MOE: |
2032 | sym = (struct symbol *) obstack_alloc | |
4a146b47 | 2033 | (¤t_objfile->objfile_obstack, |
c5aa993b JM |
2034 | sizeof (struct symbol)); |
2035 | memset (sym, 0, sizeof (struct symbol)); | |
2036 | ||
22abf04a | 2037 | DEPRECATED_SYMBOL_NAME (sym) = |
c5aa993b | 2038 | obsavestring (name, strlen (name), |
4a146b47 | 2039 | ¤t_objfile->objfile_obstack); |
c5aa993b | 2040 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 2041 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2042 | SYMBOL_VALUE (sym) = ms->c_value; |
2043 | add_symbol_to_list (sym, symlist); | |
2044 | nsyms++; | |
2045 | break; | |
c906108c | 2046 | |
c5aa993b JM |
2047 | case C_EOS: |
2048 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2049 | up the count of how many symbols to read. So stop | |
2050 | on .eos. */ | |
2051 | done = 1; | |
2052 | break; | |
c906108c SS |
2053 | } |
2054 | } | |
2055 | ||
2056 | /* Now fill in the fields of the type-structure. */ | |
2057 | ||
2058 | if (length > 0) | |
2059 | TYPE_LENGTH (type) = length; | |
9a76efb6 UW |
2060 | else /* Assume ints. */ |
2061 | TYPE_LENGTH (type) = gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT; | |
c906108c SS |
2062 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2063 | TYPE_NFIELDS (type) = nsyms; | |
2064 | TYPE_FIELDS (type) = (struct field *) | |
2065 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2066 | ||
2067 | /* Find the symbols for the values and put them into the type. | |
2068 | The symbols can be found in the symlist that we put them on | |
2069 | to cause them to be defined. osyms contains the old value | |
2070 | of that symlist; everything up to there was defined by us. */ | |
2071 | /* Note that we preserve the order of the enum constants, so | |
2072 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2073 | FOO, not LAST_THING. */ | |
2074 | ||
2075 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2076 | { | |
2077 | int j = 0; | |
2078 | ||
2079 | if (syms == osyms) | |
2080 | j = o_nsyms; | |
c5aa993b | 2081 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2082 | { |
2083 | struct symbol *xsym = syms->symbol[j]; | |
2084 | SYMBOL_TYPE (xsym) = type; | |
22abf04a | 2085 | TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym); |
c906108c SS |
2086 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
2087 | if (SYMBOL_VALUE (xsym) < 0) | |
2088 | unsigned_enum = 0; | |
2089 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
01ad7f36 | 2090 | TYPE_FIELD_STATIC_KIND (type, n) = 0; |
c906108c SS |
2091 | } |
2092 | if (syms == osyms) | |
2093 | break; | |
2094 | } | |
2095 | ||
2096 | if (unsigned_enum) | |
2097 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
2098 | ||
2099 | return type; | |
2100 | } | |
2101 | ||
2102 | /* Register our ability to parse symbols for coff BFD files. */ | |
2103 | ||
2104 | static struct sym_fns coff_sym_fns = | |
2105 | { | |
2106 | bfd_target_coff_flavour, | |
c5aa993b JM |
2107 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2108 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2109 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2110 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 2111 | default_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
31d99776 DJ |
2112 | default_symfile_segments, /* sym_segments: Get segment information from |
2113 | a file. */ | |
c295b2e5 | 2114 | NULL, /* sym_read_linetable */ |
c5aa993b | 2115 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
2116 | }; |
2117 | ||
2118 | void | |
fba45db2 | 2119 | _initialize_coffread (void) |
c906108c SS |
2120 | { |
2121 | add_symtab_fns (&coff_sym_fns); | |
2122 | } |