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