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, |
4c38e0a4 JB |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, |
4 | 2010 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 | ||
ccefe4c4 TT |
48 | #include "psymtab.h" |
49 | ||
a14ed312 | 50 | extern void _initialize_coffread (void); |
392a587b | 51 | |
c5aa993b JM |
52 | struct coff_symfile_info |
53 | { | |
54 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
55 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
c906108c | 56 | |
c5aa993b JM |
57 | CORE_ADDR textaddr; /* Addr of .text section. */ |
58 | unsigned int textsize; /* Size of .text section. */ | |
59 | struct stab_section_list *stabsects; /* .stab sections. */ | |
60 | asection *stabstrsect; /* Section pointer for .stab section */ | |
61 | char *stabstrdata; | |
62 | }; | |
c906108c SS |
63 | |
64 | /* Translate an external name string into a user-visible name. */ | |
65 | #define EXTERNAL_NAME(string, abfd) \ | |
66 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
67 | ||
68 | /* To be an sdb debug type, type must have at least a basic or primary | |
69 | derived type. Using this rather than checking against T_NULL is | |
70 | said to prevent core dumps if we try to operate on Michael Bloom | |
71 | dbx-in-coff file. */ | |
72 | ||
73 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
74 | ||
c906108c SS |
75 | /* Core address of start and end of text of current source file. |
76 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
77 | ||
78 | static CORE_ADDR current_source_start_addr; | |
79 | static CORE_ADDR current_source_end_addr; | |
80 | ||
81 | /* The addresses of the symbol table stream and number of symbols | |
82 | of the object file we are reading (as copied into core). */ | |
83 | ||
84 | static bfd *nlist_bfd_global; | |
85 | static int nlist_nsyms_global; | |
86 | ||
c906108c SS |
87 | |
88 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ | |
89 | ||
90 | static char *temp_sym; | |
91 | static char *temp_aux; | |
92 | ||
93 | /* Local variables that hold the shift and mask values for the | |
94 | COFF file that we are currently reading. These come back to us | |
95 | from BFD, and are referenced by their macro names, as well as | |
96 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
97 | macros from include/coff/internal.h . */ | |
98 | ||
c5aa993b JM |
99 | static unsigned local_n_btmask; |
100 | static unsigned local_n_btshft; | |
101 | static unsigned local_n_tmask; | |
102 | static unsigned local_n_tshift; | |
c906108c SS |
103 | |
104 | #define N_BTMASK local_n_btmask | |
105 | #define N_BTSHFT local_n_btshft | |
106 | #define N_TMASK local_n_tmask | |
107 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 108 | |
c906108c SS |
109 | /* Local variables that hold the sizes in the file of various COFF structures. |
110 | (We only need to know this to read them from the file -- BFD will then | |
111 | translate the data in them, into `internal_xxx' structs in the right | |
112 | byte order, alignment, etc.) */ | |
113 | ||
c5aa993b JM |
114 | static unsigned local_linesz; |
115 | static unsigned local_symesz; | |
116 | static unsigned local_auxesz; | |
c906108c SS |
117 | |
118 | /* This is set if this is a PE format file. */ | |
119 | ||
120 | static int pe_file; | |
121 | ||
122 | /* Chain of typedefs of pointers to empty struct/union types. | |
123 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
124 | ||
125 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
126 | ||
c906108c SS |
127 | /* Simplified internal version of coff symbol table information */ |
128 | ||
c5aa993b JM |
129 | struct coff_symbol |
130 | { | |
131 | char *c_name; | |
132 | int c_symnum; /* symbol number of this entry */ | |
133 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
134 | long c_value; | |
135 | int c_sclass; | |
136 | int c_secnum; | |
137 | unsigned int c_type; | |
138 | }; | |
c906108c | 139 | |
a14ed312 | 140 | extern void stabsread_clear_cache (void); |
7be570e7 | 141 | |
5e2b427d UW |
142 | static struct type *coff_read_struct_type (int, int, int, |
143 | struct objfile *); | |
c906108c | 144 | |
a14ed312 | 145 | static struct type *decode_base_type (struct coff_symbol *, |
5e2b427d UW |
146 | unsigned int, union internal_auxent *, |
147 | struct objfile *); | |
c906108c | 148 | |
a14ed312 | 149 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
150 | union internal_auxent *, |
151 | struct objfile *); | |
c906108c | 152 | |
a14ed312 KB |
153 | static struct type *decode_function_type (struct coff_symbol *, |
154 | unsigned int, | |
5e2b427d UW |
155 | union internal_auxent *, |
156 | struct objfile *); | |
c906108c | 157 | |
5e2b427d UW |
158 | static struct type *coff_read_enum_type (int, int, int, |
159 | struct objfile *); | |
c906108c | 160 | |
a14ed312 KB |
161 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
162 | union internal_auxent *, | |
163 | struct objfile *); | |
c906108c | 164 | |
a14ed312 | 165 | static void patch_opaque_types (struct symtab *); |
c906108c | 166 | |
a14ed312 | 167 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 168 | |
a14ed312 | 169 | static void free_linetab (void); |
c906108c | 170 | |
74b7792f AC |
171 | static void free_linetab_cleanup (void *ignore); |
172 | ||
a14ed312 | 173 | static int init_lineno (bfd *, long, int); |
c906108c | 174 | |
a14ed312 | 175 | static char *getsymname (struct internal_syment *); |
c906108c | 176 | |
a14ed312 | 177 | static char *coff_getfilename (union internal_auxent *); |
c906108c | 178 | |
a14ed312 | 179 | static void free_stringtab (void); |
c906108c | 180 | |
74b7792f AC |
181 | static void free_stringtab_cleanup (void *ignore); |
182 | ||
a14ed312 | 183 | static int init_stringtab (bfd *, long); |
c906108c | 184 | |
a14ed312 KB |
185 | static void read_one_sym (struct coff_symbol *, |
186 | struct internal_syment *, union internal_auxent *); | |
c906108c | 187 | |
a14ed312 | 188 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
189 | \f |
190 | /* We are called once per section from coff_symfile_read. We | |
191 | need to examine each section we are passed, check to see | |
192 | if it is something we are interested in processing, and | |
193 | if so, stash away some access information for the section. | |
194 | ||
195 | FIXME: The section names should not be hardwired strings (what | |
196 | should they be? I don't think most object file formats have enough | |
197 | section flags to specify what kind of debug section it is | |
198 | -kingdon). */ | |
199 | ||
200 | static void | |
12b9c64f | 201 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 202 | { |
52f0bd74 | 203 | struct coff_symfile_info *csi; |
c906108c SS |
204 | const char *name; |
205 | ||
206 | csi = (struct coff_symfile_info *) csip; | |
207 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 208 | if (strcmp (name, ".text") == 0) |
c906108c SS |
209 | { |
210 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
211 | csi->textsize += bfd_section_size (abfd, sectp); | |
212 | } | |
213 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
214 | { | |
215 | csi->textsize += bfd_section_size (abfd, sectp); | |
216 | } | |
7ecb6532 | 217 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
218 | { |
219 | csi->stabstrsect = sectp; | |
220 | } | |
221 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
222 | { | |
223 | const char *s; | |
224 | ||
225 | /* We can have multiple .stab sections if linked with | |
226 | --split-by-reloc. */ | |
227 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 228 | if (!isdigit (*s)) |
c906108c SS |
229 | break; |
230 | if (*s == '\0') | |
231 | { | |
232 | struct stab_section_list *n, **pn; | |
233 | ||
234 | n = ((struct stab_section_list *) | |
235 | xmalloc (sizeof (struct stab_section_list))); | |
236 | n->section = sectp; | |
237 | n->next = NULL; | |
238 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
239 | ; | |
240 | *pn = n; | |
241 | ||
242 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
243 | in coff_symfile_read, at which point we no longer need |
244 | the information. */ | |
b8c9b27d | 245 | make_cleanup (xfree, n); |
c906108c SS |
246 | } |
247 | } | |
248 | } | |
249 | ||
250 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 251 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 252 | |
c5aa993b JM |
253 | struct find_targ_sec_arg |
254 | { | |
255 | int targ_index; | |
256 | asection **resultp; | |
257 | }; | |
c906108c | 258 | |
c5aa993b | 259 | static void |
12b9c64f | 260 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 261 | { |
c5aa993b | 262 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c906108c SS |
263 | if (sect->target_index == args->targ_index) |
264 | *args->resultp = sect; | |
265 | } | |
266 | ||
fbcebcb1 DJ |
267 | /* Return the bfd_section that CS points to. */ |
268 | static struct bfd_section* | |
269 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
270 | { |
271 | asection *sect = NULL; | |
272 | struct find_targ_sec_arg args; | |
c906108c SS |
273 | |
274 | args.targ_index = cs->c_secnum; | |
275 | args.resultp = § | |
276 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
277 | return sect; |
278 | } | |
279 | ||
280 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
281 | static int | |
282 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
283 | { | |
284 | asection *sect = cs_to_bfd_section (cs, objfile); | |
05cfdb42 DJ |
285 | if (sect == NULL) |
286 | return SECT_OFF_TEXT (objfile); | |
287 | return sect->index; | |
c906108c SS |
288 | } |
289 | ||
290 | /* Return the address of the section of a COFF symbol. */ | |
291 | ||
a14ed312 | 292 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
293 | |
294 | static CORE_ADDR | |
fba45db2 | 295 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
296 | { |
297 | asection *sect = NULL; | |
298 | struct find_targ_sec_arg args; | |
299 | CORE_ADDR addr = 0; | |
300 | ||
301 | args.targ_index = cs->c_secnum; | |
302 | args.resultp = § | |
303 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
304 | if (sect != NULL) | |
305 | addr = bfd_get_section_vma (objfile->obfd, sect); | |
306 | return addr; | |
307 | } | |
308 | ||
309 | /* Look up a coff type-number index. Return the address of the slot | |
310 | where the type for that index is stored. | |
311 | The type-number is in INDEX. | |
312 | ||
313 | This can be used for finding the type associated with that index | |
314 | or for associating a new type with the index. */ | |
315 | ||
316 | static struct type ** | |
aa1ee363 | 317 | coff_lookup_type (int index) |
c906108c SS |
318 | { |
319 | if (index >= type_vector_length) | |
320 | { | |
321 | int old_vector_length = type_vector_length; | |
322 | ||
323 | type_vector_length *= 2; | |
c5aa993b | 324 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
325 | type_vector_length = index * 2; |
326 | ||
327 | type_vector = (struct type **) | |
328 | xrealloc ((char *) type_vector, | |
329 | type_vector_length * sizeof (struct type *)); | |
330 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 331 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
332 | } |
333 | return &type_vector[index]; | |
334 | } | |
335 | ||
336 | /* Make sure there is a type allocated for type number index | |
337 | and return the type object. | |
338 | This can create an empty (zeroed) type object. */ | |
339 | ||
340 | static struct type * | |
fba45db2 | 341 | coff_alloc_type (int index) |
c906108c | 342 | { |
52f0bd74 AC |
343 | struct type **type_addr = coff_lookup_type (index); |
344 | struct type *type = *type_addr; | |
c906108c SS |
345 | |
346 | /* If we are referring to a type not known at all yet, | |
347 | allocate an empty type for it. | |
348 | We will fill it in later if we find out how. */ | |
349 | if (type == NULL) | |
350 | { | |
351 | type = alloc_type (current_objfile); | |
352 | *type_addr = type; | |
353 | } | |
354 | return type; | |
355 | } | |
356 | \f | |
c906108c SS |
357 | /* Start a new symtab for a new source file. |
358 | This is called when a COFF ".file" symbol is seen; | |
359 | it indicates the start of data for one original source file. */ | |
360 | ||
361 | static void | |
fba45db2 | 362 | coff_start_symtab (char *name) |
c906108c SS |
363 | { |
364 | start_symtab ( | |
c5aa993b JM |
365 | /* We fill in the filename later. start_symtab puts |
366 | this pointer into last_source_file and we put it in | |
367 | subfiles->name, which end_symtab frees; that's why | |
368 | it must be malloc'd. */ | |
1b36a34b | 369 | xstrdup (name), |
c5aa993b JM |
370 | /* We never know the directory name for COFF. */ |
371 | NULL, | |
372 | /* The start address is irrelevant, since we set | |
373 | last_source_start_addr in coff_end_symtab. */ | |
374 | 0); | |
c906108c | 375 | record_debugformat ("COFF"); |
c906108c SS |
376 | } |
377 | ||
378 | /* Save the vital information from when starting to read a file, | |
379 | for use when closing off the current file. | |
380 | NAME is the file name the symbols came from, START_ADDR is the first | |
381 | text address for the file, and SIZE is the number of bytes of text. */ | |
382 | ||
383 | static void | |
fba45db2 | 384 | complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c SS |
385 | { |
386 | if (last_source_file != NULL) | |
b8c9b27d | 387 | xfree (last_source_file); |
1b36a34b | 388 | last_source_file = xstrdup (name); |
c906108c SS |
389 | current_source_start_addr = start_addr; |
390 | current_source_end_addr = start_addr + size; | |
c906108c SS |
391 | } |
392 | ||
393 | /* Finish the symbol definitions for one main source file, | |
394 | close off all the lexical contexts for that file | |
395 | (creating struct block's for them), then make the | |
396 | struct symtab for that file and put it in the list of all such. */ | |
397 | ||
398 | static void | |
fba45db2 | 399 | coff_end_symtab (struct objfile *objfile) |
c906108c SS |
400 | { |
401 | struct symtab *symtab; | |
402 | ||
403 | last_source_start_addr = current_source_start_addr; | |
404 | ||
44c75fb3 | 405 | symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 406 | |
c906108c | 407 | /* Reinitialize for beginning of new file. */ |
c906108c SS |
408 | last_source_file = NULL; |
409 | } | |
410 | \f | |
fbcebcb1 DJ |
411 | static struct minimal_symbol * |
412 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
413 | enum minimal_symbol_type type, int section, | |
414 | struct objfile *objfile) | |
c906108c | 415 | { |
fbcebcb1 | 416 | struct bfd_section *bfd_section; |
c906108c | 417 | /* We don't want TDESC entry points in the minimal symbol table */ |
fbcebcb1 DJ |
418 | if (cs->c_name[0] == '@') |
419 | return NULL; | |
c906108c | 420 | |
fbcebcb1 DJ |
421 | bfd_section = cs_to_bfd_section (cs, objfile); |
422 | return prim_record_minimal_symbol_and_info (cs->c_name, address, type, | |
b887350f | 423 | section, bfd_section, objfile); |
c906108c SS |
424 | } |
425 | \f | |
426 | /* coff_symfile_init () | |
427 | is the coff-specific initialization routine for reading symbols. | |
428 | It is passed a struct objfile which contains, among other things, | |
429 | the BFD for the file whose symbols are being read, and a slot for | |
430 | a pointer to "private data" which we fill with cookies and other | |
431 | treats for coff_symfile_read (). | |
432 | ||
433 | We will only be called if this is a COFF or COFF-like file. | |
434 | BFD handles figuring out the format of the file, and code in symtab.c | |
435 | uses BFD's determination to vector to us. | |
436 | ||
437 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
438 | ||
439 | static void | |
fba45db2 | 440 | coff_symfile_init (struct objfile *objfile) |
c906108c SS |
441 | { |
442 | /* Allocate struct to keep track of stab reading. */ | |
0a6ddd08 | 443 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
7936743b | 444 | xmalloc (sizeof (struct dbx_symfile_info)); |
c906108c | 445 | |
0a6ddd08 | 446 | memset (objfile->deprecated_sym_stab_info, 0, |
12b9c64f | 447 | sizeof (struct dbx_symfile_info)); |
c906108c SS |
448 | |
449 | /* Allocate struct to keep track of the symfile */ | |
0a6ddd08 | 450 | objfile->deprecated_sym_private = xmalloc (sizeof (struct coff_symfile_info)); |
c906108c | 451 | |
0a6ddd08 | 452 | memset (objfile->deprecated_sym_private, 0, sizeof (struct coff_symfile_info)); |
c906108c SS |
453 | |
454 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
455 | find this causes a significant slowdown in gdb then we could | |
456 | set it in the debug symbol readers only when necessary. */ | |
457 | objfile->flags |= OBJF_REORDERED; | |
458 | ||
459 | init_entry_point_info (objfile); | |
460 | } | |
461 | ||
462 | /* This function is called for every section; it finds the outer limits | |
463 | of the line table (minimum and maximum file offset) so that the | |
464 | mainline code can read the whole thing for efficiency. */ | |
465 | ||
c906108c | 466 | static void |
7be0c536 | 467 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
468 | { |
469 | struct coff_symfile_info *info; | |
470 | int size, count; | |
471 | file_ptr offset, maxoff; | |
472 | ||
473 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
474 | count = asect->lineno_count; | |
475 | /* End of warning */ | |
476 | ||
477 | if (count == 0) | |
478 | return; | |
479 | size = count * local_linesz; | |
480 | ||
c5aa993b | 481 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
482 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
483 | offset = asect->line_filepos; | |
484 | /* End of warning */ | |
485 | ||
486 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
487 | info->min_lineno_offset = offset; | |
488 | ||
489 | maxoff = offset + size; | |
490 | if (maxoff > info->max_lineno_offset) | |
491 | info->max_lineno_offset = maxoff; | |
492 | } | |
493 | ||
494 | ||
495 | /* The BFD for this file -- only good while we're actively reading | |
496 | symbols into a psymtab or a symtab. */ | |
497 | ||
498 | static bfd *symfile_bfd; | |
499 | ||
500 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
501 | ||
c906108c | 502 | static void |
f4352531 | 503 | coff_symfile_read (struct objfile *objfile, int symfile_flags) |
c906108c SS |
504 | { |
505 | struct coff_symfile_info *info; | |
506 | struct dbx_symfile_info *dbxinfo; | |
507 | bfd *abfd = objfile->obfd; | |
508 | coff_data_type *cdata = coff_data (abfd); | |
509 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 510 | int val; |
745b8ca0 | 511 | unsigned int num_symbols; |
c906108c SS |
512 | int symtab_offset; |
513 | int stringtab_offset; | |
7134143f | 514 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 515 | int stabstrsize; |
c2d11a7d JM |
516 | int len; |
517 | char * target; | |
518 | ||
0a6ddd08 AC |
519 | info = (struct coff_symfile_info *) objfile->deprecated_sym_private; |
520 | dbxinfo = objfile->deprecated_sym_stab_info; | |
c5aa993b | 521 | symfile_bfd = abfd; /* Kludge for swap routines */ |
c906108c SS |
522 | |
523 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
524 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
525 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
526 | stringtab_offset = symtab_offset + /* String table file offset */ | |
527 | num_symbols * cdata->local_symesz; | |
c906108c SS |
528 | |
529 | /* Set a few file-statics that give us specific information about | |
530 | the particular COFF file format we're reading. */ | |
c906108c SS |
531 | local_n_btmask = cdata->local_n_btmask; |
532 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 533 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 534 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
535 | local_linesz = cdata->local_linesz; |
536 | local_symesz = cdata->local_symesz; | |
537 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
538 | |
539 | /* Allocate space for raw symbol and aux entries, based on their | |
540 | space requirements as reported by BFD. */ | |
541 | temp_sym = (char *) xmalloc | |
c5aa993b | 542 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 543 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 544 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
545 | |
546 | /* We need to know whether this is a PE file, because in PE files, | |
547 | unlike standard COFF files, symbol values are stored as offsets | |
548 | from the section address, rather than as absolute addresses. | |
549 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
550 | this problem. */ | |
0d06e24b JM |
551 | pe_file = |
552 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
553 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c SS |
554 | |
555 | /* End of warning */ | |
556 | ||
c906108c SS |
557 | info->min_lineno_offset = 0; |
558 | info->max_lineno_offset = 0; | |
c906108c | 559 | |
ebeb39fe JB |
560 | /* Only read line number information if we have symbols. |
561 | ||
562 | On Windows NT, some of the system's DLL's have sections with | |
563 | PointerToLinenumbers fields that are non-zero, but point at | |
564 | random places within the image file. (In the case I found, | |
565 | KERNEL32.DLL's .text section has a line number info pointer that | |
566 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
567 | ||
568 | However, these DLL's also have no symbols. The line number | |
569 | tables are meaningless without symbols. And in fact, GDB never | |
570 | uses the line number information unless there are symbols. So we | |
571 | can avoid spurious error messages (and maybe run a little | |
572 | faster!) by not even reading the line number table unless we have | |
573 | symbols. */ | |
574 | if (num_symbols > 0) | |
575 | { | |
576 | /* Read the line number table, all at once. */ | |
577 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
578 | ||
579 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
580 | val = init_lineno (abfd, info->min_lineno_offset, | |
581 | info->max_lineno_offset - info->min_lineno_offset); | |
582 | if (val < 0) | |
8a3fe4f8 | 583 | error (_("\"%s\": error reading line numbers."), name); |
ebeb39fe | 584 | } |
c906108c SS |
585 | |
586 | /* Now read the string table, all at once. */ | |
587 | ||
74b7792f | 588 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
589 | val = init_stringtab (abfd, stringtab_offset); |
590 | if (val < 0) | |
3d263c1d | 591 | error (_("\"%s\": can't get string table"), name); |
c906108c SS |
592 | |
593 | init_minimal_symbol_collection (); | |
7134143f | 594 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
595 | |
596 | /* Now that the executable file is positioned at symbol table, | |
597 | process it and define symbols accordingly. */ | |
598 | ||
96baa820 | 599 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 600 | |
c906108c SS |
601 | /* Install any minimal symbols that have been collected as the current |
602 | minimal symbols for this objfile. */ | |
603 | ||
604 | install_minimal_symbols (objfile); | |
605 | ||
7134143f DJ |
606 | /* Free the installed minimal symbol data. */ |
607 | do_cleanups (cleanup_minimal_symbols); | |
608 | ||
12b9c64f | 609 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
610 | |
611 | if (info->stabsects) | |
612 | { | |
c5aa993b | 613 | if (!info->stabstrsect) |
b83266a0 | 614 | { |
3d263c1d BI |
615 | error (_("The debugging information in `%s' is corrupted.\n" |
616 | "The file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 617 | name); |
b83266a0 SS |
618 | } |
619 | ||
c906108c | 620 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 621 | bfd_get_section_contents? */ |
c906108c SS |
622 | bfd_seek (abfd, abfd->where, 0); |
623 | ||
624 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
625 | ||
626 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
627 | info->textaddr, info->textsize, |
628 | info->stabsects, | |
629 | info->stabstrsect->filepos, stabstrsize); | |
630 | } | |
c5edf76a | 631 | if (dwarf2_has_info (objfile)) |
42a076f0 EZ |
632 | { |
633 | /* DWARF2 sections. */ | |
f29dff0a | 634 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 635 | } |
c906108c | 636 | |
fea25152 BF |
637 | dwarf2_build_frame_info (objfile); |
638 | ||
9cce227f TG |
639 | /* Try to add separate debug file if no symbols table found. */ |
640 | if (!objfile_has_partial_symbols (objfile)) | |
641 | { | |
642 | char *debugfile; | |
643 | ||
644 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
645 | ||
646 | if (debugfile) | |
647 | { | |
648 | bfd *abfd = symfile_bfd_open (debugfile); | |
649 | symbol_file_add_separate (abfd, symfile_flags, objfile); | |
650 | xfree (debugfile); | |
651 | } | |
652 | } | |
653 | ||
c906108c SS |
654 | do_cleanups (back_to); |
655 | } | |
656 | ||
657 | static void | |
fba45db2 | 658 | coff_new_init (struct objfile *ignore) |
c906108c SS |
659 | { |
660 | } | |
661 | ||
662 | /* Perform any local cleanups required when we are done with a particular | |
663 | objfile. I.E, we are in the process of discarding all symbol information | |
664 | for an objfile, freeing up all memory held for it, and unlinking the | |
665 | objfile struct from the global list of known objfiles. */ | |
666 | ||
667 | static void | |
fba45db2 | 668 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 669 | { |
0a6ddd08 | 670 | if (objfile->deprecated_sym_private != NULL) |
c906108c | 671 | { |
0a6ddd08 | 672 | xfree (objfile->deprecated_sym_private); |
c906108c | 673 | } |
7be570e7 JM |
674 | |
675 | /* Let stabs reader clean up */ | |
676 | stabsread_clear_cache (); | |
fe3e1990 DJ |
677 | |
678 | dwarf2_free_objfile (objfile); | |
c906108c | 679 | } |
c906108c | 680 | \f |
c5aa993b | 681 | |
c906108c SS |
682 | /* Given pointers to a symbol table in coff style exec file, |
683 | analyze them and create struct symtab's describing the symbols. | |
684 | NSYMS is the number of symbols in the symbol table. | |
685 | We read them one at a time using read_one_sym (). */ | |
686 | ||
687 | static void | |
fba45db2 KB |
688 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
689 | struct objfile *objfile) | |
c906108c | 690 | { |
5e2b427d | 691 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 692 | struct context_stack *new; |
c906108c | 693 | struct coff_symbol coff_symbol; |
52f0bd74 | 694 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
695 | static struct internal_syment main_sym; |
696 | static union internal_auxent main_aux; | |
697 | struct coff_symbol fcn_cs_saved; | |
698 | static struct internal_syment fcn_sym_saved; | |
699 | static union internal_auxent fcn_aux_saved; | |
700 | struct symtab *s; | |
701 | /* A .file is open. */ | |
702 | int in_source_file = 0; | |
703 | int next_file_symnum = -1; | |
704 | /* Name of the current file. */ | |
705 | char *filestring = ""; | |
706 | int depth = 0; | |
707 | int fcn_first_line = 0; | |
b9179dbc | 708 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
709 | int fcn_last_line = 0; |
710 | int fcn_start_addr = 0; | |
711 | long fcn_line_ptr = 0; | |
712 | int val; | |
713 | CORE_ADDR tmpaddr; | |
05cfdb42 | 714 | struct minimal_symbol *msym; |
c906108c SS |
715 | |
716 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
717 | it's hard to know I've really worked around it. The fix should be | |
718 | harmless, anyway). The symptom of the bug is that the first | |
719 | fread (in read_one_sym), will (in my example) actually get data | |
720 | from file offset 268, when the fseek was to 264 (and ftell shows | |
721 | 264). This causes all hell to break loose. I was unable to | |
722 | reproduce this on a short test program which operated on the same | |
723 | file, performing (I think) the same sequence of operations. | |
724 | ||
725 | It stopped happening when I put in this (former) rewind(). | |
726 | ||
727 | FIXME: Find out if this has been reported to Sun, whether it has | |
728 | been fixed in a later release, etc. */ | |
729 | ||
730 | bfd_seek (objfile->obfd, 0, 0); | |
731 | ||
732 | /* Position to read the symbol table. */ | |
733 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); | |
734 | if (val < 0) | |
735 | perror_with_name (objfile->name); | |
736 | ||
737 | current_objfile = objfile; | |
738 | nlist_bfd_global = objfile->obfd; | |
739 | nlist_nsyms_global = nsyms; | |
740 | last_source_file = NULL; | |
741 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); | |
742 | ||
c5aa993b | 743 | if (type_vector) /* Get rid of previous one */ |
b8c9b27d | 744 | xfree (type_vector); |
c906108c SS |
745 | type_vector_length = 160; |
746 | type_vector = (struct type **) | |
747 | xmalloc (type_vector_length * sizeof (struct type *)); | |
748 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
749 | ||
750 | coff_start_symtab (""); | |
751 | ||
752 | symnum = 0; | |
753 | while (symnum < nsyms) | |
754 | { | |
755 | QUIT; /* Make this command interruptable. */ | |
756 | ||
757 | read_one_sym (cs, &main_sym, &main_aux); | |
758 | ||
759 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
760 | { | |
761 | if (last_source_file) | |
762 | coff_end_symtab (objfile); | |
763 | ||
764 | coff_start_symtab ("_globals_"); | |
969107c5 EZ |
765 | /* coff_start_symtab will set the language of this symtab to |
766 | language_unknown, since such a ``file name'' is not | |
767 | recognized. Override that with the minimal language to | |
768 | allow printing values in this symtab. */ | |
769 | current_subfile->language = language_minimal; | |
c906108c SS |
770 | complete_symtab ("_globals_", 0, 0); |
771 | /* done with all files, everything from here on out is globals */ | |
772 | } | |
773 | ||
774 | /* Special case for file with type declarations only, no text. */ | |
775 | if (!last_source_file && SDB_TYPE (cs->c_type) | |
776 | && cs->c_secnum == N_DEBUG) | |
777 | complete_symtab (filestring, 0, 0); | |
778 | ||
779 | /* Typedefs should not be treated as symbol definitions. */ | |
780 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
781 | { | |
782 | /* Record all functions -- external and static -- in minsyms. */ | |
fbcebcb1 | 783 | int section = cs_to_section (cs, objfile); |
b8fbeb18 | 784 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
fbcebcb1 | 785 | record_minimal_symbol (cs, tmpaddr, mst_text, section, objfile); |
c906108c SS |
786 | |
787 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
788 | fcn_start_addr = tmpaddr; | |
789 | fcn_cs_saved = *cs; | |
790 | fcn_sym_saved = main_sym; | |
791 | fcn_aux_saved = main_aux; | |
792 | continue; | |
793 | } | |
794 | ||
795 | switch (cs->c_sclass) | |
796 | { | |
c5aa993b JM |
797 | case C_EFCN: |
798 | case C_EXTDEF: | |
799 | case C_ULABEL: | |
800 | case C_USTATIC: | |
801 | case C_LINE: | |
802 | case C_ALIAS: | |
803 | case C_HIDDEN: | |
3d263c1d | 804 | complaint (&symfile_complaints, _("Bad n_sclass for symbol %s"), |
23136709 | 805 | cs->c_name); |
c5aa993b | 806 | break; |
c906108c | 807 | |
c5aa993b JM |
808 | case C_FILE: |
809 | /* c_value field contains symnum of next .file entry in table | |
810 | or symnum of first global after last .file. */ | |
811 | next_file_symnum = cs->c_value; | |
812 | if (cs->c_naux > 0) | |
813 | filestring = coff_getfilename (&main_aux); | |
814 | else | |
815 | filestring = ""; | |
816 | ||
817 | /* Complete symbol table for last object file | |
818 | containing debugging information. */ | |
819 | if (last_source_file) | |
820 | { | |
821 | coff_end_symtab (objfile); | |
822 | coff_start_symtab (filestring); | |
823 | } | |
824 | in_source_file = 1; | |
825 | break; | |
c906108c SS |
826 | |
827 | /* C_LABEL is used for labels and static functions. Including | |
828 | it here allows gdb to see static functions when no debug | |
829 | info is available. */ | |
c5aa993b JM |
830 | case C_LABEL: |
831 | /* However, labels within a function can make weird backtraces, | |
832 | so filter them out (from phdm@macqel.be). */ | |
833 | if (within_function) | |
834 | break; | |
835 | case C_STAT: | |
836 | case C_THUMBLABEL: | |
837 | case C_THUMBSTAT: | |
838 | case C_THUMBSTATFUNC: | |
839 | if (cs->c_name[0] == '.') | |
840 | { | |
7ecb6532 | 841 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 842 | { |
c906108c SS |
843 | /* FIXME: don't wire in ".text" as section name |
844 | or symbol name! */ | |
845 | /* Check for in_source_file deals with case of | |
846 | a file with debugging symbols | |
847 | followed by a later file with no symbols. */ | |
848 | if (in_source_file) | |
849 | complete_symtab (filestring, | |
b8fbeb18 | 850 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c SS |
851 | main_aux.x_scn.x_scnlen); |
852 | in_source_file = 0; | |
853 | } | |
c5aa993b | 854 | /* flush rest of '.' symbols */ |
c906108c | 855 | break; |
c5aa993b JM |
856 | } |
857 | else if (!SDB_TYPE (cs->c_type) | |
858 | && cs->c_name[0] == 'L' | |
859 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
860 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
861 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
862 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
863 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
864 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
865 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
866 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
867 | /* At least on a 3b1, gcc generates swbeg and string labels | |
868 | that look like this. Ignore them. */ | |
869 | break; | |
870 | /* fall in for static symbols that don't start with '.' */ | |
871 | case C_THUMBEXT: | |
872 | case C_THUMBEXTFUNC: | |
873 | case C_EXT: | |
874 | { | |
875 | /* Record it in the minimal symbols regardless of | |
876 | SDB_TYPE. This parallels what we do for other debug | |
877 | formats, and probably is needed to make | |
878 | print_address_symbolic work right without the (now | |
879 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 880 | |
c5aa993b JM |
881 | enum minimal_symbol_type ms_type; |
882 | int sec; | |
c906108c | 883 | |
c5aa993b JM |
884 | if (cs->c_secnum == N_UNDEF) |
885 | { | |
886 | /* This is a common symbol. See if the target | |
887 | environment knows where it has been relocated to. */ | |
888 | CORE_ADDR reladdr; | |
889 | if (target_lookup_symbol (cs->c_name, &reladdr)) | |
890 | { | |
891 | /* Error in lookup; ignore symbol. */ | |
892 | break; | |
893 | } | |
894 | tmpaddr = reladdr; | |
895 | /* The address has already been relocated; make sure that | |
896 | objfile_relocate doesn't relocate it again. */ | |
897 | sec = -2; | |
898 | ms_type = cs->c_sclass == C_EXT | |
899 | || cs->c_sclass == C_THUMBEXT ? | |
900 | mst_bss : mst_file_bss; | |
901 | } | |
182d43bc EZ |
902 | else if (cs->c_secnum == N_ABS) |
903 | { | |
904 | /* Use the correct minimal symbol type (and don't | |
905 | relocate) for absolute values. */ | |
906 | ms_type = mst_abs; | |
907 | sec = cs_to_section (cs, objfile); | |
908 | tmpaddr = cs->c_value; | |
909 | } | |
c5aa993b JM |
910 | else |
911 | { | |
05cfdb42 | 912 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5aa993b JM |
913 | sec = cs_to_section (cs, objfile); |
914 | tmpaddr = cs->c_value; | |
182d43bc EZ |
915 | /* Statics in a PE file also get relocated */ |
916 | if (cs->c_sclass == C_EXT | |
917 | || cs->c_sclass == C_THUMBEXTFUNC | |
918 | || cs->c_sclass == C_THUMBEXT | |
919 | || (pe_file && (cs->c_sclass == C_STAT))) | |
96baa820 | 920 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 921 | |
05cfdb42 | 922 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 923 | { |
c5aa993b JM |
924 | ms_type = |
925 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
926 | || cs->c_sclass == C_THUMBEXT ? | |
927 | mst_text : mst_file_text; | |
5e2b427d | 928 | tmpaddr = gdbarch_smash_text_address (gdbarch, tmpaddr); |
b8fbeb18 | 929 | } |
05cfdb42 DJ |
930 | else if (bfd_section->flags & SEC_ALLOC |
931 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 932 | { |
c5aa993b JM |
933 | ms_type = |
934 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
935 | mst_data : mst_file_data; | |
34e924c0 | 936 | } |
05cfdb42 | 937 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 938 | { |
c5aa993b JM |
939 | ms_type = |
940 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
05cfdb42 | 941 | mst_bss : mst_file_bss; |
34e924c0 EZ |
942 | } |
943 | else | |
944 | ms_type = mst_unknown; | |
c5aa993b | 945 | } |
c906108c | 946 | |
05cfdb42 DJ |
947 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, sec, objfile); |
948 | if (msym) | |
5e2b427d | 949 | gdbarch_coff_make_msymbol_special (gdbarch, cs->c_sclass, msym); |
fbcebcb1 | 950 | |
c5aa993b JM |
951 | if (SDB_TYPE (cs->c_type)) |
952 | { | |
953 | struct symbol *sym; | |
954 | sym = process_coff_symbol | |
96baa820 | 955 | (cs, &main_aux, objfile); |
c5aa993b JM |
956 | SYMBOL_VALUE (sym) = tmpaddr; |
957 | SYMBOL_SECTION (sym) = sec; | |
958 | } | |
959 | } | |
960 | break; | |
961 | ||
962 | case C_FCN: | |
7ecb6532 | 963 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
964 | { |
965 | within_function = 1; | |
966 | ||
967 | /* value contains address of first non-init type code */ | |
968 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
969 | contains line number of '{' } */ | |
970 | if (cs->c_naux != 1) | |
23136709 | 971 | complaint (&symfile_complaints, |
3d263c1d | 972 | _("`.bf' symbol %d has no aux entry"), cs->c_symnum); |
c5aa993b JM |
973 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
974 | fcn_first_line_addr = cs->c_value; | |
975 | ||
976 | /* Might want to check that locals are 0 and | |
977 | context_stack_depth is zero, and complain if not. */ | |
978 | ||
979 | depth = 0; | |
980 | new = push_context (depth, fcn_start_addr); | |
981 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
982 | new->name = | |
96baa820 | 983 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); |
c5aa993b | 984 | } |
7ecb6532 | 985 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 986 | { |
b9179dbc | 987 | if (!within_function) |
8a3fe4f8 | 988 | error (_("Bad coff function information.")); |
c5aa993b JM |
989 | /* the value of .ef is the address of epilogue code; |
990 | not useful for gdb. */ | |
991 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
992 | contains number of lines to '}' */ | |
993 | ||
994 | if (context_stack_depth <= 0) | |
995 | { /* We attempted to pop an empty context stack */ | |
23136709 | 996 | complaint (&symfile_complaints, |
3d263c1d | 997 | _("`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d"), |
23136709 | 998 | cs->c_symnum); |
c5aa993b JM |
999 | within_function = 0; |
1000 | break; | |
c906108c | 1001 | } |
c5aa993b JM |
1002 | |
1003 | new = pop_context (); | |
1004 | /* Stack must be empty now. */ | |
1005 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 1006 | { |
23136709 | 1007 | complaint (&symfile_complaints, |
3d263c1d | 1008 | _("Unmatched .ef symbol(s) ignored starting at symnum %d"), |
23136709 | 1009 | cs->c_symnum); |
c5aa993b JM |
1010 | within_function = 0; |
1011 | break; | |
c906108c | 1012 | } |
c5aa993b JM |
1013 | if (cs->c_naux != 1) |
1014 | { | |
23136709 | 1015 | complaint (&symfile_complaints, |
3d263c1d | 1016 | _("`.ef' symbol %d has no aux entry"), cs->c_symnum); |
c5aa993b JM |
1017 | fcn_last_line = 0x7FFFFFFF; |
1018 | } | |
1019 | else | |
1020 | { | |
1021 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1022 | } | |
1023 | /* fcn_first_line is the line number of the opening '{'. | |
1024 | Do not record it - because it would affect gdb's idea | |
1025 | of the line number of the first statement of the function - | |
1026 | except for one-line functions, for which it is also the line | |
1027 | number of all the statements and of the closing '}', and | |
1028 | for which we do not have any other statement-line-number. */ | |
1029 | if (fcn_last_line == 1) | |
1030 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1031 | gdbarch_addr_bits_remove (gdbarch, |
1032 | fcn_first_line_addr)); | |
c5aa993b JM |
1033 | else |
1034 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, | |
d4f3574e | 1035 | objfile); |
c906108c | 1036 | |
c5aa993b JM |
1037 | finish_block (new->name, &local_symbols, new->old_blocks, |
1038 | new->start_addr, | |
c5aa993b JM |
1039 | fcn_cs_saved.c_value |
1040 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b8fbeb18 | 1041 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c5aa993b JM |
1042 | objfile |
1043 | ); | |
1044 | within_function = 0; | |
1045 | } | |
1046 | break; | |
c906108c | 1047 | |
c5aa993b | 1048 | case C_BLOCK: |
7ecb6532 | 1049 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1050 | { |
1051 | tmpaddr = cs->c_value; | |
b8fbeb18 | 1052 | tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1053 | push_context (++depth, tmpaddr); |
1054 | } | |
7ecb6532 | 1055 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1056 | { |
1057 | if (context_stack_depth <= 0) | |
1058 | { /* We attempted to pop an empty context stack */ | |
23136709 | 1059 | complaint (&symfile_complaints, |
3d263c1d | 1060 | _("`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d"), |
23136709 | 1061 | cs->c_symnum); |
c5aa993b JM |
1062 | break; |
1063 | } | |
c906108c | 1064 | |
c5aa993b JM |
1065 | new = pop_context (); |
1066 | if (depth-- != new->depth) | |
1067 | { | |
23136709 | 1068 | complaint (&symfile_complaints, |
3d263c1d | 1069 | _("Mismatched .eb symbol ignored starting at symnum %d"), |
23136709 | 1070 | symnum); |
c5aa993b JM |
1071 | break; |
1072 | } | |
1073 | if (local_symbols && context_stack_depth > 0) | |
1074 | { | |
1075 | tmpaddr = | |
b8fbeb18 | 1076 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1077 | /* Make a block for the local symbols within. */ |
1078 | finish_block (0, &local_symbols, new->old_blocks, | |
1079 | new->start_addr, tmpaddr, objfile); | |
1080 | } | |
1081 | /* Now pop locals of block just finished. */ | |
1082 | local_symbols = new->locals; | |
1083 | } | |
1084 | break; | |
c906108c | 1085 | |
c5aa993b | 1086 | default: |
96baa820 | 1087 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1088 | break; |
c906108c SS |
1089 | } |
1090 | } | |
1091 | ||
1b6bc7e0 CF |
1092 | if ((nsyms == 0) && (pe_file)) |
1093 | { | |
c2f20dd6 | 1094 | /* We've got no debugging symbols, but it's a portable |
1b6bc7e0 CF |
1095 | executable, so try to read the export table */ |
1096 | read_pe_exported_syms (objfile); | |
1097 | } | |
1098 | ||
c906108c SS |
1099 | if (last_source_file) |
1100 | coff_end_symtab (objfile); | |
1101 | ||
1102 | /* Patch up any opaque types (references to types that are not defined | |
1103 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1104 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1105 | patch_opaque_types (s); | |
1106 | ||
1107 | current_objfile = NULL; | |
1108 | } | |
1109 | \f | |
1110 | /* Routines for reading headers and symbols from executable. */ | |
1111 | ||
1112 | /* Read the next symbol, swap it, and return it in both internal_syment | |
1113 | form, and coff_symbol form. Also return its first auxent, if any, | |
1114 | in internal_auxent form, and skip any other auxents. */ | |
1115 | ||
1116 | static void | |
aa1ee363 AC |
1117 | read_one_sym (struct coff_symbol *cs, |
1118 | struct internal_syment *sym, | |
1119 | union internal_auxent *aux) | |
c906108c SS |
1120 | { |
1121 | int i; | |
3b016d57 | 1122 | bfd_size_type bytes; |
c906108c SS |
1123 | |
1124 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1125 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1126 | if (bytes != local_symesz) | |
1127 | error ("%s: error reading symbols", current_objfile->name); | |
c5aa993b | 1128 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1129 | cs->c_naux = sym->n_numaux & 0xff; |
1130 | if (cs->c_naux >= 1) | |
1131 | { | |
3b016d57 DJ |
1132 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1133 | if (bytes != local_auxesz) | |
1134 | error ("%s: error reading symbols", current_objfile->name); | |
c5aa993b JM |
1135 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
1136 | 0, cs->c_naux, (char *) aux); | |
1137 | /* If more than one aux entry, read past it (only the first aux | |
1138 | is important). */ | |
1139 | for (i = 1; i < cs->c_naux; i++) | |
3b016d57 DJ |
1140 | { |
1141 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1142 | if (bytes != local_auxesz) | |
1143 | error ("%s: error reading symbols", current_objfile->name); | |
1144 | } | |
c906108c SS |
1145 | } |
1146 | cs->c_name = getsymname (sym); | |
1147 | cs->c_value = sym->n_value; | |
1148 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1149 | cs->c_secnum = sym->n_scnum; | |
1150 | cs->c_type = (unsigned) sym->n_type; | |
1151 | if (!SDB_TYPE (cs->c_type)) | |
1152 | cs->c_type = 0; | |
1153 | ||
1154 | #if 0 | |
1155 | if (cs->c_sclass & 128) | |
3d263c1d | 1156 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1157 | #endif |
1158 | ||
1159 | symnum += 1 + cs->c_naux; | |
1160 | ||
1161 | /* The PE file format stores symbol values as offsets within the | |
1162 | section, rather than as absolute addresses. We correct that | |
1163 | here, if the symbol has an appropriate storage class. FIXME: We | |
1164 | should use BFD to read the symbols, rather than duplicating the | |
1165 | work here. */ | |
1166 | if (pe_file) | |
1167 | { | |
1168 | switch (cs->c_sclass) | |
1169 | { | |
1170 | case C_EXT: | |
1171 | case C_THUMBEXT: | |
1172 | case C_THUMBEXTFUNC: | |
1173 | case C_SECTION: | |
1174 | case C_NT_WEAK: | |
1175 | case C_STAT: | |
1176 | case C_THUMBSTAT: | |
1177 | case C_THUMBSTATFUNC: | |
1178 | case C_LABEL: | |
1179 | case C_THUMBLABEL: | |
1180 | case C_BLOCK: | |
1181 | case C_FCN: | |
1182 | case C_EFCN: | |
1183 | if (cs->c_secnum != 0) | |
1184 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1185 | break; | |
1186 | } | |
1187 | } | |
1188 | } | |
1189 | \f | |
1190 | /* Support for string table handling */ | |
1191 | ||
1192 | static char *stringtab = NULL; | |
1193 | ||
1194 | static int | |
fba45db2 | 1195 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1196 | { |
1197 | long length; | |
1198 | int val; | |
1199 | unsigned char lengthbuf[4]; | |
1200 | ||
1201 | free_stringtab (); | |
1202 | ||
1203 | /* If the file is stripped, the offset might be zero, indicating no | |
1204 | string table. Just return with `stringtab' set to null. */ | |
1205 | if (offset == 0) | |
1206 | return 0; | |
1207 | ||
1208 | if (bfd_seek (abfd, offset, 0) < 0) | |
1209 | return -1; | |
1210 | ||
3a42e9d0 | 1211 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1212 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1213 | |
c906108c SS |
1214 | /* If no string table is needed, then the file may end immediately |
1215 | after the symbols. Just return with `stringtab' set to null. */ | |
1216 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1217 | return 0; | |
1218 | ||
1219 | stringtab = (char *) xmalloc (length); | |
1220 | /* This is in target format (probably not very useful, and not currently | |
1221 | used), not host format. */ | |
1222 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
c5aa993b | 1223 | if (length == sizeof length) /* Empty table -- just the count */ |
c906108c SS |
1224 | return 0; |
1225 | ||
3a42e9d0 AM |
1226 | val = bfd_bread (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, |
1227 | abfd); | |
c906108c SS |
1228 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1229 | return -1; | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | static void | |
fba45db2 | 1235 | free_stringtab (void) |
c906108c SS |
1236 | { |
1237 | if (stringtab) | |
b8c9b27d | 1238 | xfree (stringtab); |
c906108c SS |
1239 | stringtab = NULL; |
1240 | } | |
1241 | ||
74b7792f AC |
1242 | static void |
1243 | free_stringtab_cleanup (void *ignore) | |
1244 | { | |
1245 | free_stringtab (); | |
1246 | } | |
1247 | ||
c906108c | 1248 | static char * |
fba45db2 | 1249 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1250 | { |
c5aa993b | 1251 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1252 | char *result; |
1253 | ||
1254 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1255 | { | |
1256 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1257 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1258 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1259 | } | |
1260 | else | |
1261 | { | |
1262 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1263 | buffer[SYMNMLEN] = '\0'; | |
1264 | result = buffer; | |
1265 | } | |
1266 | return result; | |
1267 | } | |
1268 | ||
1269 | /* Extract the file name from the aux entry of a C_FILE symbol. Return | |
1270 | only the last component of the name. Result is in static storage and | |
1271 | is only good for temporary use. */ | |
1272 | ||
1273 | static char * | |
fba45db2 | 1274 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1275 | { |
1276 | static char buffer[BUFSIZ]; | |
52f0bd74 | 1277 | char *temp; |
c906108c SS |
1278 | char *result; |
1279 | ||
1280 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1281 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1282 | else | |
1283 | { | |
1284 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1285 | buffer[FILNMLEN] = '\0'; | |
1286 | } | |
1287 | result = buffer; | |
1288 | ||
1289 | /* FIXME: We should not be throwing away the information about what | |
1290 | directory. It should go into dirname of the symtab, or some such | |
1291 | place. */ | |
1292 | if ((temp = strrchr (result, '/')) != NULL) | |
1293 | result = temp + 1; | |
1294 | return (result); | |
1295 | } | |
1296 | \f | |
1297 | /* Support for line number handling. */ | |
1298 | ||
1299 | static char *linetab = NULL; | |
1300 | static long linetab_offset; | |
1301 | static unsigned long linetab_size; | |
1302 | ||
1303 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1304 | external (unswapped) format in memory; we'll swap them as we enter | |
1305 | them into GDB's data structures. */ | |
c5aa993b | 1306 | |
c906108c | 1307 | static int |
fba45db2 | 1308 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1309 | { |
1310 | int val; | |
1311 | ||
1312 | linetab_offset = offset; | |
1313 | linetab_size = size; | |
1314 | ||
c5aa993b | 1315 | free_linetab (); |
c906108c SS |
1316 | |
1317 | if (size == 0) | |
1318 | return 0; | |
1319 | ||
1320 | if (bfd_seek (abfd, offset, 0) < 0) | |
1321 | return -1; | |
c5aa993b | 1322 | |
c906108c SS |
1323 | /* Allocate the desired table, plus a sentinel */ |
1324 | linetab = (char *) xmalloc (size + local_linesz); | |
1325 | ||
3a42e9d0 | 1326 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1327 | if (val != size) |
1328 | return -1; | |
1329 | ||
1330 | /* Terminate it with an all-zero sentinel record */ | |
1331 | memset (linetab + size, 0, local_linesz); | |
1332 | ||
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | static void | |
fba45db2 | 1337 | free_linetab (void) |
c906108c SS |
1338 | { |
1339 | if (linetab) | |
b8c9b27d | 1340 | xfree (linetab); |
c906108c SS |
1341 | linetab = NULL; |
1342 | } | |
1343 | ||
74b7792f AC |
1344 | static void |
1345 | free_linetab_cleanup (void *ignore) | |
1346 | { | |
1347 | free_linetab (); | |
1348 | } | |
1349 | ||
c906108c SS |
1350 | #if !defined (L_LNNO32) |
1351 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1352 | #endif | |
1353 | ||
1354 | static void | |
aa1ee363 AC |
1355 | enter_linenos (long file_offset, int first_line, |
1356 | int last_line, struct objfile *objfile) | |
c906108c | 1357 | { |
fbf65064 | 1358 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1359 | char *rawptr; |
c906108c SS |
1360 | struct internal_lineno lptr; |
1361 | ||
1362 | if (!linetab) | |
c5aa993b | 1363 | return; |
c906108c SS |
1364 | if (file_offset < linetab_offset) |
1365 | { | |
23136709 | 1366 | complaint (&symfile_complaints, |
3d263c1d | 1367 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1368 | file_offset); |
c906108c SS |
1369 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1370 | return; | |
c5aa993b | 1371 | file_offset += linetab_offset; /* Try reading at that linetab offset */ |
c906108c | 1372 | } |
c5aa993b | 1373 | |
c906108c SS |
1374 | rawptr = &linetab[file_offset - linetab_offset]; |
1375 | ||
1376 | /* skip first line entry for each function */ | |
1377 | rawptr += local_linesz; | |
1378 | /* line numbers start at one for the first line of the function */ | |
1379 | first_line--; | |
1380 | ||
e6a8a7d2 EZ |
1381 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1382 | info), the next function's L_LNNO32 might not be zero, so don't | |
1383 | overstep the table's end in any case. */ | |
1384 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1385 | { |
1386 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1387 | rawptr += local_linesz; | |
e6a8a7d2 EZ |
1388 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
1389 | we exit. */ | |
c5aa993b | 1390 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1391 | { |
1392 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
1393 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1394 | record_line (current_subfile, first_line + L_LNNO32 (&lptr), | |
1395 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
1396 | } | |
c5aa993b JM |
1397 | else |
1398 | break; | |
1399 | } | |
c906108c SS |
1400 | } |
1401 | \f | |
1402 | static void | |
fba45db2 | 1403 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1404 | { |
52f0bd74 AC |
1405 | struct type *target = TYPE_TARGET_TYPE (type); |
1406 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1407 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1408 | ||
1409 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1410 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1411 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); | |
1412 | ||
1413 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); | |
1414 | ||
1415 | if (TYPE_NAME (real_target)) | |
1416 | { | |
1417 | if (TYPE_NAME (target)) | |
b8c9b27d | 1418 | xfree (TYPE_NAME (target)); |
1754f103 | 1419 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), (char *)NULL); |
c906108c SS |
1420 | } |
1421 | } | |
1422 | ||
1423 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
1424 | so that they can be used to print out opaque data structures properly. */ | |
1425 | ||
1426 | static void | |
fba45db2 | 1427 | patch_opaque_types (struct symtab *s) |
c906108c | 1428 | { |
52f0bd74 | 1429 | struct block *b; |
de4f826b | 1430 | struct dict_iterator iter; |
52f0bd74 | 1431 | struct symbol *real_sym; |
c5aa993b | 1432 | |
c906108c SS |
1433 | /* Go through the per-file symbols only */ |
1434 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 1435 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1436 | { |
1437 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1438 | Remove syms from the chain when their types are stored, |
1439 | but search the whole chain, as there may be several syms | |
1440 | from different files with the same name. */ | |
5aafa1cc PM |
1441 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1442 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1443 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1444 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1445 | { |
3567439c | 1446 | char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1447 | int hash = hashname (name); |
1448 | struct symbol *sym, *prev; | |
c5aa993b | 1449 | |
c906108c SS |
1450 | prev = 0; |
1451 | for (sym = opaque_type_chain[hash]; sym;) | |
1452 | { | |
5aafa1cc PM |
1453 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1454 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1455 | { |
1456 | if (prev) | |
1457 | { | |
1458 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1459 | } | |
1460 | else | |
1461 | { | |
1462 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1463 | } | |
c5aa993b | 1464 | |
c906108c | 1465 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1466 | |
c906108c SS |
1467 | if (prev) |
1468 | { | |
1469 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1470 | } | |
1471 | else | |
1472 | { | |
1473 | sym = opaque_type_chain[hash]; | |
1474 | } | |
1475 | } | |
1476 | else | |
1477 | { | |
1478 | prev = sym; | |
1479 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1480 | } | |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | } | |
1485 | \f | |
768a979c UW |
1486 | static int |
1487 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1488 | { | |
1489 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1490 | } | |
1491 | ||
1492 | static const struct symbol_register_ops coff_register_funcs = { | |
1493 | coff_reg_to_regnum | |
1494 | }; | |
1495 | ||
c906108c | 1496 | static struct symbol * |
aa1ee363 AC |
1497 | process_coff_symbol (struct coff_symbol *cs, |
1498 | union internal_auxent *aux, | |
fba45db2 | 1499 | struct objfile *objfile) |
c906108c | 1500 | { |
52f0bd74 | 1501 | struct symbol *sym |
4a146b47 | 1502 | = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 1503 | sizeof (struct symbol)); |
c906108c SS |
1504 | char *name; |
1505 | ||
1506 | memset (sym, 0, sizeof (struct symbol)); | |
1507 | name = cs->c_name; | |
1508 | name = EXTERNAL_NAME (name, objfile->obfd); | |
754dd031 | 1509 | SYMBOL_LANGUAGE (sym) = current_subfile->language; |
04a679b8 | 1510 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1511 | |
1512 | /* default assumptions */ | |
1513 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1514 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1515 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1516 | ||
1517 | if (ISFCN (cs->c_type)) | |
1518 | { | |
b8fbeb18 | 1519 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b | 1520 | SYMBOL_TYPE (sym) = |
5e2b427d | 1521 | lookup_function_type (decode_function_type (cs, cs->c_type, aux, objfile)); |
c906108c SS |
1522 | |
1523 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1524 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT | |
1525 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1526 | add_symbol_to_list (sym, &file_symbols); | |
1527 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1528 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1529 | add_symbol_to_list (sym, &global_symbols); | |
1530 | } | |
1531 | else | |
1532 | { | |
5e2b427d | 1533 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1534 | switch (cs->c_sclass) |
1535 | { | |
c5aa993b JM |
1536 | case C_NULL: |
1537 | break; | |
c906108c | 1538 | |
c5aa993b JM |
1539 | case C_AUTO: |
1540 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1541 | add_symbol_to_list (sym, &local_symbols); | |
1542 | break; | |
c906108c | 1543 | |
c5aa993b JM |
1544 | case C_THUMBEXT: |
1545 | case C_THUMBEXTFUNC: | |
1546 | case C_EXT: | |
1547 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1548 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1549 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1550 | add_symbol_to_list (sym, &global_symbols); |
1551 | break; | |
c906108c | 1552 | |
c5aa993b JM |
1553 | case C_THUMBSTAT: |
1554 | case C_THUMBSTATFUNC: | |
1555 | case C_STAT: | |
1556 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1557 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1558 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1559 | if (within_function) |
1560 | { | |
c906108c SS |
1561 | /* Static symbol of local scope */ |
1562 | add_symbol_to_list (sym, &local_symbols); | |
1563 | } | |
c5aa993b JM |
1564 | else |
1565 | { | |
c906108c SS |
1566 | /* Static symbol at top level of file */ |
1567 | add_symbol_to_list (sym, &file_symbols); | |
1568 | } | |
c5aa993b | 1569 | break; |
c906108c SS |
1570 | |
1571 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1572 | case C_GLBLREG: |
c906108c | 1573 | #endif |
c5aa993b JM |
1574 | case C_REG: |
1575 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
768a979c UW |
1576 | SYMBOL_REGISTER_OPS (sym) = &coff_register_funcs; |
1577 | SYMBOL_VALUE (sym) = cs->c_value; | |
c5aa993b JM |
1578 | add_symbol_to_list (sym, &local_symbols); |
1579 | break; | |
c906108c | 1580 | |
c5aa993b JM |
1581 | case C_THUMBLABEL: |
1582 | case C_LABEL: | |
1583 | break; | |
c906108c | 1584 | |
c5aa993b JM |
1585 | case C_ARG: |
1586 | SYMBOL_CLASS (sym) = LOC_ARG; | |
2a2d4dc3 | 1587 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1588 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1589 | break; |
c906108c | 1590 | |
c5aa993b | 1591 | case C_REGPARM: |
2a2d4dc3 | 1592 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
768a979c | 1593 | SYMBOL_REGISTER_OPS (sym) = &coff_register_funcs; |
2a2d4dc3 | 1594 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1595 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1596 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1597 | break; |
c906108c | 1598 | |
c5aa993b JM |
1599 | case C_TPDEF: |
1600 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1601 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
1602 | |
1603 | /* If type has no name, give it one */ | |
1604 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
1605 | { | |
1606 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1607 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1608 | { | |
1609 | /* If we are giving a name to a type such as "pointer to | |
1610 | foo" or "function returning foo", we better not set | |
1611 | the TYPE_NAME. If the program contains "typedef char | |
1612 | *caddr_t;", we don't want all variables of type char | |
1613 | * to print as caddr_t. This is not just a | |
1614 | consequence of GDB's type management; CC and GCC (at | |
1615 | least through version 2.4) both output variables of | |
1616 | either type char * or caddr_t with the type | |
1617 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1618 | compiler cleans this up it GDB is not ready for it | |
1619 | yet, but if it becomes ready we somehow need to | |
1620 | disable this check (without breaking the PCC/GCC2.4 | |
1621 | case). | |
1622 | ||
1623 | Sigh. | |
1624 | ||
1625 | Fortunately, this check seems not to be necessary | |
1626 | for anything except pointers or functions. */ | |
1627 | ; | |
1628 | } | |
1629 | else | |
1630 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
3567439c | 1631 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b | 1632 | } |
c906108c | 1633 | |
c5aa993b JM |
1634 | /* Keep track of any type which points to empty structured type, |
1635 | so it can be filled from a definition from another file. A | |
1636 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1637 | empty structured type, though; the forward references | |
1638 | work themselves out via the magic of coff_lookup_type. */ | |
5aafa1cc PM |
1639 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1640 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1641 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1642 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1643 | { |
3567439c | 1644 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1645 | |
c5aa993b JM |
1646 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1647 | opaque_type_chain[i] = sym; | |
1648 | } | |
1649 | add_symbol_to_list (sym, &file_symbols); | |
1650 | break; | |
c906108c | 1651 | |
c5aa993b JM |
1652 | case C_STRTAG: |
1653 | case C_UNTAG: | |
1654 | case C_ENTAG: | |
1655 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1656 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1657 | |
1658 | /* Some compilers try to be helpful by inventing "fake" | |
1659 | names for anonymous enums, structures, and unions, like | |
1660 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1661 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
3567439c DJ |
1662 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1663 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1664 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1665 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1666 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1667 | |
1668 | add_symbol_to_list (sym, &file_symbols); | |
1669 | break; | |
c906108c | 1670 | |
c5aa993b JM |
1671 | default: |
1672 | break; | |
c906108c SS |
1673 | } |
1674 | } | |
1675 | return sym; | |
1676 | } | |
1677 | \f | |
1678 | /* Decode a coff type specifier; return the type that is meant. */ | |
1679 | ||
1680 | static struct type * | |
aa1ee363 | 1681 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1682 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1683 | { |
52f0bd74 | 1684 | struct type *type = 0; |
c906108c SS |
1685 | unsigned int new_c_type; |
1686 | ||
1687 | if (c_type & ~N_BTMASK) | |
1688 | { | |
1689 | new_c_type = DECREF (c_type); | |
1690 | if (ISPTR (c_type)) | |
1691 | { | |
5e2b427d | 1692 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1693 | type = lookup_pointer_type (type); |
1694 | } | |
1695 | else if (ISFCN (c_type)) | |
1696 | { | |
5e2b427d | 1697 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1698 | type = lookup_function_type (type); |
1699 | } | |
1700 | else if (ISARY (c_type)) | |
1701 | { | |
1702 | int i, n; | |
aa1ee363 | 1703 | unsigned short *dim; |
c906108c SS |
1704 | struct type *base_type, *index_type, *range_type; |
1705 | ||
1706 | /* Define an array type. */ | |
1707 | /* auxent refers to array, not base type */ | |
1708 | if (aux->x_sym.x_tagndx.l == 0) | |
1709 | cs->c_naux = 0; | |
1710 | ||
1711 | /* shift the indices down */ | |
1712 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1713 | i = 1; | |
1714 | n = dim[0]; | |
1715 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1716 | *dim = *(dim + 1); | |
1717 | *dim = 0; | |
1718 | ||
5e2b427d | 1719 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1720 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
1721 | range_type = |
1722 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1723 | type = | |
1724 | create_array_type ((struct type *) NULL, base_type, range_type); | |
1725 | } | |
1726 | return type; | |
1727 | } | |
1728 | ||
1729 | /* Reference to existing type. This only occurs with the | |
1730 | struct, union, and enum types. EPI a29k coff | |
1731 | fakes us out by producing aux entries with a nonzero | |
1732 | x_tagndx for definitions of structs, unions, and enums, so we | |
1733 | have to check the c_sclass field. SCO 3.2v4 cc gets confused | |
1734 | with pointers to pointers to defined structs, and generates | |
1735 | negative x_tagndx fields. */ | |
1736 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) | |
1737 | { | |
1738 | if (cs->c_sclass != C_STRTAG | |
1739 | && cs->c_sclass != C_UNTAG | |
1740 | && cs->c_sclass != C_ENTAG | |
1741 | && aux->x_sym.x_tagndx.l >= 0) | |
1742 | { | |
1743 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1744 | return type; | |
1745 | } | |
1746 | else | |
1747 | { | |
23136709 | 1748 | complaint (&symfile_complaints, |
3d263c1d | 1749 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1750 | cs->c_name); |
c906108c SS |
1751 | /* And fall through to decode_base_type... */ |
1752 | } | |
1753 | } | |
1754 | ||
5e2b427d | 1755 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1756 | } |
1757 | ||
1758 | /* Decode a coff type specifier for function definition; | |
1759 | return the type that the function returns. */ | |
1760 | ||
1761 | static struct type * | |
aa1ee363 | 1762 | decode_function_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1763 | union internal_auxent *aux, struct objfile *objfile) |
c906108c SS |
1764 | { |
1765 | if (aux->x_sym.x_tagndx.l == 0) | |
c5aa993b | 1766 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
c906108c | 1767 | |
5e2b427d | 1768 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1769 | } |
1770 | \f | |
1771 | /* basic C types */ | |
1772 | ||
1773 | static struct type * | |
aa1ee363 | 1774 | decode_base_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1775 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1776 | { |
5e2b427d | 1777 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1778 | struct type *type; |
1779 | ||
1780 | switch (c_type) | |
1781 | { | |
c5aa993b JM |
1782 | case T_NULL: |
1783 | /* shows up with "void (*foo)();" structure members */ | |
46bf5051 | 1784 | return objfile_type (objfile)->builtin_void; |
c906108c | 1785 | |
c906108c | 1786 | #ifdef T_VOID |
c5aa993b JM |
1787 | case T_VOID: |
1788 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1789 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1790 | #endif |
1791 | ||
c5aa993b | 1792 | case T_CHAR: |
46bf5051 | 1793 | return objfile_type (objfile)->builtin_char; |
c906108c | 1794 | |
c5aa993b | 1795 | case T_SHORT: |
46bf5051 | 1796 | return objfile_type (objfile)->builtin_short; |
c906108c | 1797 | |
c5aa993b | 1798 | case T_INT: |
46bf5051 | 1799 | return objfile_type (objfile)->builtin_int; |
c906108c | 1800 | |
c5aa993b JM |
1801 | case T_LONG: |
1802 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1803 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1804 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1805 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1806 | else |
46bf5051 | 1807 | return objfile_type (objfile)->builtin_long; |
c906108c | 1808 | |
c5aa993b | 1809 | case T_FLOAT: |
46bf5051 | 1810 | return objfile_type (objfile)->builtin_float; |
c906108c | 1811 | |
c5aa993b | 1812 | case T_DOUBLE: |
46bf5051 | 1813 | return objfile_type (objfile)->builtin_double; |
c906108c | 1814 | |
c5aa993b | 1815 | case T_LNGDBL: |
46bf5051 | 1816 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1817 | |
c5aa993b JM |
1818 | case T_STRUCT: |
1819 | if (cs->c_naux != 1) | |
1820 | { | |
1821 | /* anonymous structure type */ | |
1822 | type = coff_alloc_type (cs->c_symnum); | |
1823 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1824 | TYPE_NAME (type) = NULL; | |
1825 | /* This used to set the tag to "<opaque>". But I think setting it | |
1826 | to NULL is right, and the printing code can print it as | |
1827 | "struct {...}". */ | |
1828 | TYPE_TAG_NAME (type) = NULL; | |
1829 | INIT_CPLUS_SPECIFIC (type); | |
1830 | TYPE_LENGTH (type) = 0; | |
1831 | TYPE_FIELDS (type) = 0; | |
1832 | TYPE_NFIELDS (type) = 0; | |
1833 | } | |
1834 | else | |
1835 | { | |
1836 | type = coff_read_struct_type (cs->c_symnum, | |
1837 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1838 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1839 | objfile); | |
c5aa993b JM |
1840 | } |
1841 | return type; | |
c906108c | 1842 | |
c5aa993b JM |
1843 | case T_UNION: |
1844 | if (cs->c_naux != 1) | |
1845 | { | |
1846 | /* anonymous union type */ | |
1847 | type = coff_alloc_type (cs->c_symnum); | |
1848 | TYPE_NAME (type) = NULL; | |
1849 | /* This used to set the tag to "<opaque>". But I think setting it | |
1850 | to NULL is right, and the printing code can print it as | |
1851 | "union {...}". */ | |
1852 | TYPE_TAG_NAME (type) = NULL; | |
1853 | INIT_CPLUS_SPECIFIC (type); | |
1854 | TYPE_LENGTH (type) = 0; | |
1855 | TYPE_FIELDS (type) = 0; | |
1856 | TYPE_NFIELDS (type) = 0; | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1861 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1862 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1863 | objfile); | |
c5aa993b JM |
1864 | } |
1865 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1866 | return type; | |
c906108c | 1867 | |
c5aa993b JM |
1868 | case T_ENUM: |
1869 | if (cs->c_naux != 1) | |
1870 | { | |
1871 | /* anonymous enum type */ | |
1872 | type = coff_alloc_type (cs->c_symnum); | |
1873 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1874 | TYPE_NAME (type) = NULL; | |
1875 | /* This used to set the tag to "<opaque>". But I think setting it | |
1876 | to NULL is right, and the printing code can print it as | |
1877 | "enum {...}". */ | |
1878 | TYPE_TAG_NAME (type) = NULL; | |
1879 | TYPE_LENGTH (type) = 0; | |
1880 | TYPE_FIELDS (type) = 0; | |
1881 | TYPE_NFIELDS (type) = 0; | |
1882 | } | |
1883 | else | |
1884 | { | |
1885 | type = coff_read_enum_type (cs->c_symnum, | |
1886 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1887 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1888 | objfile); | |
c5aa993b JM |
1889 | } |
1890 | return type; | |
1891 | ||
1892 | case T_MOE: | |
1893 | /* shouldn't show up here */ | |
1894 | break; | |
c906108c | 1895 | |
c5aa993b | 1896 | case T_UCHAR: |
46bf5051 | 1897 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1898 | |
c5aa993b | 1899 | case T_USHORT: |
46bf5051 | 1900 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1901 | |
c5aa993b | 1902 | case T_UINT: |
46bf5051 | 1903 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1904 | |
c5aa993b JM |
1905 | case T_ULONG: |
1906 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1907 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1908 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1909 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1910 | else |
46bf5051 | 1911 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1912 | } |
3d263c1d | 1913 | complaint (&symfile_complaints, _("Unexpected type for symbol %s"), cs->c_name); |
46bf5051 | 1914 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1915 | } |
1916 | \f | |
1917 | /* This page contains subroutines of read_type. */ | |
1918 | ||
1919 | /* Read the description of a structure (or union type) and return an | |
1920 | object describing the type. */ | |
1921 | ||
1922 | static struct type * | |
5e2b427d UW |
1923 | coff_read_struct_type (int index, int length, int lastsym, |
1924 | struct objfile *objfile) | |
c906108c SS |
1925 | { |
1926 | struct nextfield | |
1927 | { | |
1928 | struct nextfield *next; | |
1929 | struct field field; | |
1930 | }; | |
1931 | ||
52f0bd74 AC |
1932 | struct type *type; |
1933 | struct nextfield *list = 0; | |
c906108c SS |
1934 | struct nextfield *new; |
1935 | int nfields = 0; | |
52f0bd74 | 1936 | int n; |
c906108c SS |
1937 | char *name; |
1938 | struct coff_symbol member_sym; | |
52f0bd74 | 1939 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1940 | struct internal_syment sub_sym; |
1941 | union internal_auxent sub_aux; | |
1942 | int done = 0; | |
1943 | ||
1944 | type = coff_alloc_type (index); | |
1945 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 1946 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1947 | TYPE_LENGTH (type) = length; |
1948 | ||
1949 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1950 | { | |
1951 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1952 | name = ms->c_name; | |
5e2b427d | 1953 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
1954 | |
1955 | switch (ms->c_sclass) | |
1956 | { | |
c5aa993b JM |
1957 | case C_MOS: |
1958 | case C_MOU: | |
1959 | ||
1960 | /* Get space to record the next field's data. */ | |
1961 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1962 | new->next = list; | |
1963 | list = new; | |
1964 | ||
1965 | /* Save the data. */ | |
1966 | list->field.name = | |
5e2b427d UW |
1967 | obsavestring (name, strlen (name), &objfile->objfile_obstack); |
1968 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux, | |
1969 | objfile); | |
d6a843b5 | 1970 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
1971 | FIELD_BITSIZE (list->field) = 0; |
1972 | nfields++; | |
1973 | break; | |
c906108c | 1974 | |
c5aa993b JM |
1975 | case C_FIELD: |
1976 | ||
1977 | /* Get space to record the next field's data. */ | |
1978 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1979 | new->next = list; | |
1980 | list = new; | |
1981 | ||
1982 | /* Save the data. */ | |
1983 | list->field.name = | |
5e2b427d UW |
1984 | obsavestring (name, strlen (name), &objfile->objfile_obstack); |
1985 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux, | |
1986 | objfile); | |
d6a843b5 | 1987 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
1988 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
1989 | nfields++; | |
1990 | break; | |
c906108c | 1991 | |
c5aa993b JM |
1992 | case C_EOS: |
1993 | done = 1; | |
1994 | break; | |
c906108c SS |
1995 | } |
1996 | } | |
1997 | /* Now create the vector of fields, and record how big it is. */ | |
1998 | ||
1999 | TYPE_NFIELDS (type) = nfields; | |
2000 | TYPE_FIELDS (type) = (struct field *) | |
2001 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2002 | ||
2003 | /* Copy the saved-up fields into the field vector. */ | |
2004 | ||
2005 | for (n = nfields; list; list = list->next) | |
2006 | TYPE_FIELD (type, --n) = list->field; | |
2007 | ||
2008 | return type; | |
2009 | } | |
2010 | \f | |
2011 | /* Read a definition of an enumeration type, | |
2012 | and create and return a suitable type object. | |
2013 | Also defines the symbols that represent the values of the type. */ | |
2014 | ||
c906108c | 2015 | static struct type * |
5e2b427d UW |
2016 | coff_read_enum_type (int index, int length, int lastsym, |
2017 | struct objfile *objfile) | |
c906108c | 2018 | { |
5e2b427d | 2019 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2020 | struct symbol *sym; |
2021 | struct type *type; | |
c906108c SS |
2022 | int nsyms = 0; |
2023 | int done = 0; | |
2024 | struct pending **symlist; | |
2025 | struct coff_symbol member_sym; | |
52f0bd74 | 2026 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2027 | struct internal_syment sub_sym; |
2028 | union internal_auxent sub_aux; | |
2029 | struct pending *osyms, *syms; | |
2030 | int o_nsyms; | |
52f0bd74 | 2031 | int n; |
c906108c SS |
2032 | char *name; |
2033 | int unsigned_enum = 1; | |
2034 | ||
2035 | type = coff_alloc_type (index); | |
2036 | if (within_function) | |
2037 | symlist = &local_symbols; | |
2038 | else | |
2039 | symlist = &file_symbols; | |
2040 | osyms = *symlist; | |
2041 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2042 | ||
2043 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2044 | { | |
2045 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2046 | name = ms->c_name; | |
5e2b427d | 2047 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2048 | |
2049 | switch (ms->c_sclass) | |
2050 | { | |
c5aa993b JM |
2051 | case C_MOE: |
2052 | sym = (struct symbol *) obstack_alloc | |
5e2b427d | 2053 | (&objfile->objfile_obstack, sizeof (struct symbol)); |
c5aa993b JM |
2054 | memset (sym, 0, sizeof (struct symbol)); |
2055 | ||
3567439c DJ |
2056 | SYMBOL_SET_LINKAGE_NAME (sym, |
2057 | obsavestring (name, strlen (name), | |
2058 | &objfile->objfile_obstack)); | |
c5aa993b | 2059 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 2060 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2061 | SYMBOL_VALUE (sym) = ms->c_value; |
2062 | add_symbol_to_list (sym, symlist); | |
2063 | nsyms++; | |
2064 | break; | |
c906108c | 2065 | |
c5aa993b JM |
2066 | case C_EOS: |
2067 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2068 | up the count of how many symbols to read. So stop | |
2069 | on .eos. */ | |
2070 | done = 1; | |
2071 | break; | |
c906108c SS |
2072 | } |
2073 | } | |
2074 | ||
2075 | /* Now fill in the fields of the type-structure. */ | |
2076 | ||
2077 | if (length > 0) | |
2078 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2079 | else /* Assume ints. */ |
5e2b427d | 2080 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2081 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2082 | TYPE_NFIELDS (type) = nsyms; | |
2083 | TYPE_FIELDS (type) = (struct field *) | |
2084 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2085 | ||
2086 | /* Find the symbols for the values and put them into the type. | |
2087 | The symbols can be found in the symlist that we put them on | |
2088 | to cause them to be defined. osyms contains the old value | |
2089 | of that symlist; everything up to there was defined by us. */ | |
2090 | /* Note that we preserve the order of the enum constants, so | |
2091 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2092 | FOO, not LAST_THING. */ | |
2093 | ||
2094 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2095 | { | |
2096 | int j = 0; | |
2097 | ||
2098 | if (syms == osyms) | |
2099 | j = o_nsyms; | |
c5aa993b | 2100 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2101 | { |
2102 | struct symbol *xsym = syms->symbol[j]; | |
2103 | SYMBOL_TYPE (xsym) = type; | |
3567439c | 2104 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
d6a843b5 | 2105 | SET_FIELD_BITPOS (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2106 | if (SYMBOL_VALUE (xsym) < 0) |
2107 | unsigned_enum = 0; | |
2108 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2109 | } | |
2110 | if (syms == osyms) | |
2111 | break; | |
2112 | } | |
2113 | ||
2114 | if (unsigned_enum) | |
876cecd0 | 2115 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2116 | |
2117 | return type; | |
2118 | } | |
2119 | ||
2120 | /* Register our ability to parse symbols for coff BFD files. */ | |
2121 | ||
2122 | static struct sym_fns coff_sym_fns = | |
2123 | { | |
2124 | bfd_target_coff_flavour, | |
c5aa993b JM |
2125 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2126 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2127 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2128 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 2129 | default_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
31d99776 DJ |
2130 | default_symfile_segments, /* sym_segments: Get segment information from |
2131 | a file. */ | |
c295b2e5 | 2132 | NULL, /* sym_read_linetable */ |
ac8035ab | 2133 | default_symfile_relocate, /* sym_relocate: Relocate a debug section. */ |
ccefe4c4 | 2134 | &psym_functions, |
c5aa993b | 2135 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
2136 | }; |
2137 | ||
2138 | void | |
fba45db2 | 2139 | _initialize_coffread (void) |
c906108c SS |
2140 | { |
2141 | add_symtab_fns (&coff_sym_fns); | |
2142 | } |