Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
28e7fd62 | 2 | Copyright (C) 1987-2013 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "demangle.h" | |
24 | #include "breakpoint.h" | |
25 | ||
26 | #include "bfd.h" | |
04ea0df1 | 27 | #include "gdb_obstack.h" |
c906108c SS |
28 | |
29 | #include "gdb_string.h" | |
30 | #include <ctype.h> | |
31 | ||
32 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
33 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "buildsym.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "stabsread.h" | |
38 | #include "complaints.h" | |
39 | #include "target.h" | |
6ec4c4bd | 40 | #include "gdb_assert.h" |
fe898f56 | 41 | #include "block.h" |
de4f826b | 42 | #include "dictionary.h" |
c906108c | 43 | |
1b6bc7e0 CF |
44 | #include "coff-pe-read.h" |
45 | ||
ccefe4c4 TT |
46 | #include "psymtab.h" |
47 | ||
a14ed312 | 48 | extern void _initialize_coffread (void); |
392a587b | 49 | |
b8b98ad1 TT |
50 | /* Key for COFF-associated data. */ |
51 | ||
52 | static const struct objfile_data *coff_objfile_data_key; | |
53 | ||
91a81f69 TT |
54 | /* The objfile we are currently reading. */ |
55 | ||
dd707e8e | 56 | static struct objfile *coffread_objfile; |
91a81f69 | 57 | |
c5aa993b JM |
58 | struct coff_symfile_info |
59 | { | |
aff410f1 MS |
60 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
61 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 62 | |
aff410f1 MS |
63 | CORE_ADDR textaddr; /* Addr of .text section. */ |
64 | unsigned int textsize; /* Size of .text section. */ | |
c5aa993b | 65 | struct stab_section_list *stabsects; /* .stab sections. */ |
aff410f1 | 66 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
67 | char *stabstrdata; |
68 | }; | |
c906108c SS |
69 | |
70 | /* Translate an external name string into a user-visible name. */ | |
71 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
72 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
73 | ? string + 1 : string) | |
c906108c SS |
74 | |
75 | /* To be an sdb debug type, type must have at least a basic or primary | |
76 | derived type. Using this rather than checking against T_NULL is | |
77 | said to prevent core dumps if we try to operate on Michael Bloom | |
78 | dbx-in-coff file. */ | |
79 | ||
80 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
81 | ||
c906108c SS |
82 | /* Core address of start and end of text of current source file. |
83 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
84 | ||
85 | static CORE_ADDR current_source_start_addr; | |
86 | static CORE_ADDR current_source_end_addr; | |
87 | ||
88 | /* The addresses of the symbol table stream and number of symbols | |
89 | of the object file we are reading (as copied into core). */ | |
90 | ||
91 | static bfd *nlist_bfd_global; | |
92 | static int nlist_nsyms_global; | |
93 | ||
c906108c | 94 | |
aff410f1 MS |
95 | /* Pointers to scratch storage, used for reading raw symbols and |
96 | auxents. */ | |
c906108c SS |
97 | |
98 | static char *temp_sym; | |
99 | static char *temp_aux; | |
100 | ||
101 | /* Local variables that hold the shift and mask values for the | |
102 | COFF file that we are currently reading. These come back to us | |
103 | from BFD, and are referenced by their macro names, as well as | |
104 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
105 | macros from include/coff/internal.h . */ | |
106 | ||
c5aa993b JM |
107 | static unsigned local_n_btmask; |
108 | static unsigned local_n_btshft; | |
109 | static unsigned local_n_tmask; | |
110 | static unsigned local_n_tshift; | |
c906108c SS |
111 | |
112 | #define N_BTMASK local_n_btmask | |
113 | #define N_BTSHFT local_n_btshft | |
114 | #define N_TMASK local_n_tmask | |
115 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 116 | |
aff410f1 MS |
117 | /* Local variables that hold the sizes in the file of various COFF |
118 | structures. (We only need to know this to read them from the file | |
119 | -- BFD will then translate the data in them, into `internal_xxx' | |
120 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 121 | |
c5aa993b JM |
122 | static unsigned local_linesz; |
123 | static unsigned local_symesz; | |
124 | static unsigned local_auxesz; | |
c906108c SS |
125 | |
126 | /* This is set if this is a PE format file. */ | |
127 | ||
128 | static int pe_file; | |
129 | ||
130 | /* Chain of typedefs of pointers to empty struct/union types. | |
131 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
132 | ||
133 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
134 | ||
aff410f1 | 135 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 136 | |
c5aa993b JM |
137 | struct coff_symbol |
138 | { | |
139 | char *c_name; | |
aff410f1 MS |
140 | int c_symnum; /* Symbol number of this entry. */ |
141 | int c_naux; /* 0 if syment only, 1 if syment + | |
142 | auxent, etc. */ | |
5e8db398 | 143 | CORE_ADDR c_value; |
c5aa993b JM |
144 | int c_sclass; |
145 | int c_secnum; | |
146 | unsigned int c_type; | |
147 | }; | |
c906108c | 148 | |
a14ed312 | 149 | extern void stabsread_clear_cache (void); |
7be570e7 | 150 | |
5e2b427d UW |
151 | static struct type *coff_read_struct_type (int, int, int, |
152 | struct objfile *); | |
c906108c | 153 | |
a14ed312 | 154 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
155 | unsigned int, |
156 | union internal_auxent *, | |
5e2b427d | 157 | struct objfile *); |
c906108c | 158 | |
a14ed312 | 159 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
160 | union internal_auxent *, |
161 | struct objfile *); | |
c906108c | 162 | |
a14ed312 KB |
163 | static struct type *decode_function_type (struct coff_symbol *, |
164 | unsigned int, | |
5e2b427d UW |
165 | union internal_auxent *, |
166 | struct objfile *); | |
c906108c | 167 | |
5e2b427d UW |
168 | static struct type *coff_read_enum_type (int, int, int, |
169 | struct objfile *); | |
c906108c | 170 | |
a14ed312 KB |
171 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
172 | union internal_auxent *, | |
173 | struct objfile *); | |
c906108c | 174 | |
a14ed312 | 175 | static void patch_opaque_types (struct symtab *); |
c906108c | 176 | |
a14ed312 | 177 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 178 | |
a14ed312 | 179 | static void free_linetab (void); |
c906108c | 180 | |
74b7792f AC |
181 | static void free_linetab_cleanup (void *ignore); |
182 | ||
a14ed312 | 183 | static int init_lineno (bfd *, long, int); |
c906108c | 184 | |
a14ed312 | 185 | static char *getsymname (struct internal_syment *); |
c906108c | 186 | |
9f37bbcc | 187 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 188 | |
a14ed312 | 189 | static void free_stringtab (void); |
c906108c | 190 | |
74b7792f AC |
191 | static void free_stringtab_cleanup (void *ignore); |
192 | ||
a14ed312 | 193 | static int init_stringtab (bfd *, long); |
c906108c | 194 | |
a14ed312 | 195 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
196 | struct internal_syment *, |
197 | union internal_auxent *); | |
c906108c | 198 | |
a14ed312 | 199 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
200 | \f |
201 | /* We are called once per section from coff_symfile_read. We | |
202 | need to examine each section we are passed, check to see | |
203 | if it is something we are interested in processing, and | |
204 | if so, stash away some access information for the section. | |
205 | ||
206 | FIXME: The section names should not be hardwired strings (what | |
207 | should they be? I don't think most object file formats have enough | |
208 | section flags to specify what kind of debug section it is | |
209 | -kingdon). */ | |
210 | ||
211 | static void | |
12b9c64f | 212 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 213 | { |
52f0bd74 | 214 | struct coff_symfile_info *csi; |
c906108c SS |
215 | const char *name; |
216 | ||
217 | csi = (struct coff_symfile_info *) csip; | |
218 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 219 | if (strcmp (name, ".text") == 0) |
c906108c SS |
220 | { |
221 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
222 | csi->textsize += bfd_section_size (abfd, sectp); | |
223 | } | |
224 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
225 | { | |
226 | csi->textsize += bfd_section_size (abfd, sectp); | |
227 | } | |
7ecb6532 | 228 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
229 | { |
230 | csi->stabstrsect = sectp; | |
231 | } | |
232 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
233 | { | |
234 | const char *s; | |
235 | ||
236 | /* We can have multiple .stab sections if linked with | |
237 | --split-by-reloc. */ | |
238 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 239 | if (!isdigit (*s)) |
c906108c SS |
240 | break; |
241 | if (*s == '\0') | |
242 | { | |
243 | struct stab_section_list *n, **pn; | |
244 | ||
245 | n = ((struct stab_section_list *) | |
246 | xmalloc (sizeof (struct stab_section_list))); | |
247 | n->section = sectp; | |
248 | n->next = NULL; | |
249 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
250 | ; | |
251 | *pn = n; | |
252 | ||
253 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
254 | in coff_symfile_read, at which point we no longer need |
255 | the information. */ | |
b8c9b27d | 256 | make_cleanup (xfree, n); |
c906108c SS |
257 | } |
258 | } | |
259 | } | |
260 | ||
261 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 262 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 263 | |
c5aa993b JM |
264 | struct find_targ_sec_arg |
265 | { | |
266 | int targ_index; | |
267 | asection **resultp; | |
268 | }; | |
c906108c | 269 | |
c5aa993b | 270 | static void |
12b9c64f | 271 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 272 | { |
c5aa993b | 273 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 274 | |
c906108c SS |
275 | if (sect->target_index == args->targ_index) |
276 | *args->resultp = sect; | |
277 | } | |
278 | ||
fbcebcb1 DJ |
279 | /* Return the bfd_section that CS points to. */ |
280 | static struct bfd_section* | |
281 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
282 | { |
283 | asection *sect = NULL; | |
284 | struct find_targ_sec_arg args; | |
c906108c SS |
285 | |
286 | args.targ_index = cs->c_secnum; | |
287 | args.resultp = § | |
288 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
289 | return sect; |
290 | } | |
291 | ||
292 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
293 | static int | |
294 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
295 | { | |
296 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 297 | |
05cfdb42 DJ |
298 | if (sect == NULL) |
299 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 300 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
301 | } |
302 | ||
303 | /* Return the address of the section of a COFF symbol. */ | |
304 | ||
a14ed312 | 305 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
306 | |
307 | static CORE_ADDR | |
fba45db2 | 308 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
309 | { |
310 | asection *sect = NULL; | |
311 | struct find_targ_sec_arg args; | |
312 | CORE_ADDR addr = 0; | |
313 | ||
314 | args.targ_index = cs->c_secnum; | |
315 | args.resultp = § | |
316 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
317 | if (sect != NULL) | |
81b9b86e | 318 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
319 | return addr; |
320 | } | |
321 | ||
322 | /* Look up a coff type-number index. Return the address of the slot | |
323 | where the type for that index is stored. | |
324 | The type-number is in INDEX. | |
325 | ||
326 | This can be used for finding the type associated with that index | |
327 | or for associating a new type with the index. */ | |
328 | ||
329 | static struct type ** | |
aa1ee363 | 330 | coff_lookup_type (int index) |
c906108c SS |
331 | { |
332 | if (index >= type_vector_length) | |
333 | { | |
334 | int old_vector_length = type_vector_length; | |
335 | ||
336 | type_vector_length *= 2; | |
c5aa993b | 337 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
338 | type_vector_length = index * 2; |
339 | ||
340 | type_vector = (struct type **) | |
341 | xrealloc ((char *) type_vector, | |
342 | type_vector_length * sizeof (struct type *)); | |
343 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 344 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
345 | } |
346 | return &type_vector[index]; | |
347 | } | |
348 | ||
349 | /* Make sure there is a type allocated for type number index | |
350 | and return the type object. | |
351 | This can create an empty (zeroed) type object. */ | |
352 | ||
353 | static struct type * | |
fba45db2 | 354 | coff_alloc_type (int index) |
c906108c | 355 | { |
52f0bd74 AC |
356 | struct type **type_addr = coff_lookup_type (index); |
357 | struct type *type = *type_addr; | |
c906108c SS |
358 | |
359 | /* If we are referring to a type not known at all yet, | |
360 | allocate an empty type for it. | |
361 | We will fill it in later if we find out how. */ | |
362 | if (type == NULL) | |
363 | { | |
dd707e8e | 364 | type = alloc_type (coffread_objfile); |
c906108c SS |
365 | *type_addr = type; |
366 | } | |
367 | return type; | |
368 | } | |
369 | \f | |
c906108c SS |
370 | /* Start a new symtab for a new source file. |
371 | This is called when a COFF ".file" symbol is seen; | |
372 | it indicates the start of data for one original source file. */ | |
373 | ||
374 | static void | |
9f37bbcc | 375 | coff_start_symtab (const char *name) |
c906108c SS |
376 | { |
377 | start_symtab ( | |
aff410f1 MS |
378 | /* We fill in the filename later. start_symtab puts this pointer |
379 | into last_source_file and we put it in subfiles->name, which | |
380 | end_symtab frees; that's why it must be malloc'd. */ | |
1b36a34b | 381 | xstrdup (name), |
c5aa993b JM |
382 | /* We never know the directory name for COFF. */ |
383 | NULL, | |
384 | /* The start address is irrelevant, since we set | |
385 | last_source_start_addr in coff_end_symtab. */ | |
386 | 0); | |
c906108c | 387 | record_debugformat ("COFF"); |
c906108c SS |
388 | } |
389 | ||
390 | /* Save the vital information from when starting to read a file, | |
391 | for use when closing off the current file. | |
aff410f1 MS |
392 | NAME is the file name the symbols came from, START_ADDR is the |
393 | first text address for the file, and SIZE is the number of bytes of | |
394 | text. */ | |
c906108c SS |
395 | |
396 | static void | |
9f37bbcc | 397 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 398 | { |
46212e0b | 399 | set_last_source_file (name); |
c906108c SS |
400 | current_source_start_addr = start_addr; |
401 | current_source_end_addr = start_addr + size; | |
c906108c SS |
402 | } |
403 | ||
aff410f1 MS |
404 | /* Finish the symbol definitions for one main source file, close off |
405 | all the lexical contexts for that file (creating struct block's for | |
406 | them), then make the struct symtab for that file and put it in the | |
407 | list of all such. */ | |
c906108c SS |
408 | |
409 | static void | |
fba45db2 | 410 | coff_end_symtab (struct objfile *objfile) |
c906108c | 411 | { |
c906108c SS |
412 | last_source_start_addr = current_source_start_addr; |
413 | ||
6b4511ab MS |
414 | end_symtab (current_source_end_addr, objfile, |
415 | SECT_OFF_TEXT (objfile)); | |
c906108c | 416 | |
aff410f1 | 417 | /* Reinitialize for beginning of new file. */ |
46212e0b | 418 | set_last_source_file (NULL); |
c906108c SS |
419 | } |
420 | \f | |
af312be7 JB |
421 | /* The linker sometimes generates some non-function symbols inside |
422 | functions referencing variables imported from another DLL. | |
423 | Return nonzero if the given symbol corresponds to one of them. */ | |
424 | ||
425 | static int | |
426 | is_import_fixup_symbol (struct coff_symbol *cs, | |
427 | enum minimal_symbol_type type) | |
428 | { | |
429 | /* The following is a bit of a heuristic using the characterictics | |
430 | of these fixup symbols, but should work well in practice... */ | |
431 | int i; | |
432 | ||
433 | /* Must be a non-static text symbol. */ | |
434 | if (type != mst_text) | |
435 | return 0; | |
436 | ||
437 | /* Must be a non-function symbol. */ | |
438 | if (ISFCN (cs->c_type)) | |
439 | return 0; | |
440 | ||
441 | /* The name must start with "__fu<digits>__". */ | |
442 | if (strncmp (cs->c_name, "__fu", 4) != 0) | |
443 | return 0; | |
444 | if (! isdigit (cs->c_name[4])) | |
445 | return 0; | |
446 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
447 | /* Nothing, just incrementing index past all digits. */; | |
448 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
449 | return 0; | |
450 | ||
451 | return 1; | |
452 | } | |
453 | ||
fbcebcb1 DJ |
454 | static struct minimal_symbol * |
455 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
456 | enum minimal_symbol_type type, int section, | |
457 | struct objfile *objfile) | |
c906108c | 458 | { |
fbcebcb1 | 459 | struct bfd_section *bfd_section; |
c5504eaf | 460 | |
aff410f1 | 461 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
462 | if (cs->c_name[0] == '@') |
463 | return NULL; | |
c906108c | 464 | |
af312be7 JB |
465 | if (is_import_fixup_symbol (cs, type)) |
466 | { | |
467 | /* Because the value of these symbols is within a function code | |
468 | range, these symbols interfere with the symbol-from-address | |
469 | reverse lookup; this manifests itselfs in backtraces, or any | |
470 | other commands that prints symbolic addresses. Just pretend | |
471 | these symbols do not exist. */ | |
472 | return NULL; | |
473 | } | |
474 | ||
fbcebcb1 | 475 | bfd_section = cs_to_bfd_section (cs, objfile); |
aff410f1 MS |
476 | return prim_record_minimal_symbol_and_info (cs->c_name, address, |
477 | type, section, | |
478 | bfd_section, objfile); | |
c906108c SS |
479 | } |
480 | \f | |
481 | /* coff_symfile_init () | |
482 | is the coff-specific initialization routine for reading symbols. | |
483 | It is passed a struct objfile which contains, among other things, | |
484 | the BFD for the file whose symbols are being read, and a slot for | |
485 | a pointer to "private data" which we fill with cookies and other | |
486 | treats for coff_symfile_read (). | |
487 | ||
aff410f1 MS |
488 | We will only be called if this is a COFF or COFF-like file. BFD |
489 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
490 | uses BFD's determination to vector to us. |
491 | ||
aff410f1 MS |
492 | The ultimate result is a new symtab (or, FIXME, eventually a |
493 | psymtab). */ | |
c906108c SS |
494 | |
495 | static void | |
fba45db2 | 496 | coff_symfile_init (struct objfile *objfile) |
c906108c | 497 | { |
d2f4b8fe | 498 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 499 | struct coff_symfile_info *coff; |
c906108c | 500 | |
d2f4b8fe TT |
501 | /* Allocate struct to keep track of stab reading. */ |
502 | dbx = XCNEW (struct dbx_symfile_info); | |
503 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 504 | |
aff410f1 | 505 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
506 | coff = XCNEW (struct coff_symfile_info); |
507 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
508 | |
509 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
510 | find this causes a significant slowdown in gdb then we could | |
511 | set it in the debug symbol readers only when necessary. */ | |
512 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
513 | } |
514 | ||
aff410f1 MS |
515 | /* This function is called for every section; it finds the outer |
516 | limits of the line table (minimum and maximum file offset) so that | |
517 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 518 | |
c906108c | 519 | static void |
7be0c536 | 520 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
521 | { |
522 | struct coff_symfile_info *info; | |
523 | int size, count; | |
524 | file_ptr offset, maxoff; | |
525 | ||
aff410f1 | 526 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 527 | count = asect->lineno_count; |
aff410f1 | 528 | /* End of warning. */ |
c906108c SS |
529 | |
530 | if (count == 0) | |
531 | return; | |
532 | size = count * local_linesz; | |
533 | ||
c5aa993b | 534 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 535 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 536 | offset = asect->line_filepos; |
aff410f1 | 537 | /* End of warning. */ |
c906108c SS |
538 | |
539 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
540 | info->min_lineno_offset = offset; | |
541 | ||
542 | maxoff = offset + size; | |
543 | if (maxoff > info->max_lineno_offset) | |
544 | info->max_lineno_offset = maxoff; | |
545 | } | |
546 | ||
547 | ||
548 | /* The BFD for this file -- only good while we're actively reading | |
549 | symbols into a psymtab or a symtab. */ | |
550 | ||
551 | static bfd *symfile_bfd; | |
552 | ||
553 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
554 | ||
c906108c | 555 | static void |
f4352531 | 556 | coff_symfile_read (struct objfile *objfile, int symfile_flags) |
c906108c SS |
557 | { |
558 | struct coff_symfile_info *info; | |
559 | struct dbx_symfile_info *dbxinfo; | |
560 | bfd *abfd = objfile->obfd; | |
561 | coff_data_type *cdata = coff_data (abfd); | |
562 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 563 | int val; |
745b8ca0 | 564 | unsigned int num_symbols; |
c906108c SS |
565 | int symtab_offset; |
566 | int stringtab_offset; | |
7134143f | 567 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 568 | int stabstrsize; |
c2d11a7d | 569 | |
b8b98ad1 | 570 | info = objfile_data (objfile, coff_objfile_data_key); |
d2f4b8fe | 571 | dbxinfo = DBX_SYMFILE_INFO (objfile); |
aff410f1 | 572 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c SS |
573 | |
574 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
575 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
576 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
577 | stringtab_offset = symtab_offset + /* String table file offset */ | |
578 | num_symbols * cdata->local_symesz; | |
c906108c SS |
579 | |
580 | /* Set a few file-statics that give us specific information about | |
581 | the particular COFF file format we're reading. */ | |
c906108c SS |
582 | local_n_btmask = cdata->local_n_btmask; |
583 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 584 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 585 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
586 | local_linesz = cdata->local_linesz; |
587 | local_symesz = cdata->local_symesz; | |
588 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
589 | |
590 | /* Allocate space for raw symbol and aux entries, based on their | |
591 | space requirements as reported by BFD. */ | |
592 | temp_sym = (char *) xmalloc | |
c5aa993b | 593 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 594 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 595 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
596 | |
597 | /* We need to know whether this is a PE file, because in PE files, | |
598 | unlike standard COFF files, symbol values are stored as offsets | |
599 | from the section address, rather than as absolute addresses. | |
600 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
601 | this problem. */ | |
0d06e24b JM |
602 | pe_file = |
603 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
604 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c | 605 | |
aff410f1 | 606 | /* End of warning. */ |
c906108c | 607 | |
c906108c SS |
608 | info->min_lineno_offset = 0; |
609 | info->max_lineno_offset = 0; | |
c906108c | 610 | |
ebeb39fe JB |
611 | /* Only read line number information if we have symbols. |
612 | ||
613 | On Windows NT, some of the system's DLL's have sections with | |
614 | PointerToLinenumbers fields that are non-zero, but point at | |
615 | random places within the image file. (In the case I found, | |
616 | KERNEL32.DLL's .text section has a line number info pointer that | |
617 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
618 | ||
619 | However, these DLL's also have no symbols. The line number | |
620 | tables are meaningless without symbols. And in fact, GDB never | |
621 | uses the line number information unless there are symbols. So we | |
622 | can avoid spurious error messages (and maybe run a little | |
623 | faster!) by not even reading the line number table unless we have | |
624 | symbols. */ | |
625 | if (num_symbols > 0) | |
626 | { | |
627 | /* Read the line number table, all at once. */ | |
628 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
629 | ||
630 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
631 | val = init_lineno (abfd, info->min_lineno_offset, | |
632 | info->max_lineno_offset - info->min_lineno_offset); | |
633 | if (val < 0) | |
8a3fe4f8 | 634 | error (_("\"%s\": error reading line numbers."), name); |
ebeb39fe | 635 | } |
c906108c SS |
636 | |
637 | /* Now read the string table, all at once. */ | |
638 | ||
74b7792f | 639 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
640 | val = init_stringtab (abfd, stringtab_offset); |
641 | if (val < 0) | |
3d263c1d | 642 | error (_("\"%s\": can't get string table"), name); |
c906108c SS |
643 | |
644 | init_minimal_symbol_collection (); | |
7134143f | 645 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
646 | |
647 | /* Now that the executable file is positioned at symbol table, | |
648 | process it and define symbols accordingly. */ | |
649 | ||
96baa820 | 650 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 651 | |
aff410f1 MS |
652 | /* Install any minimal symbols that have been collected as the |
653 | current minimal symbols for this objfile. */ | |
c906108c SS |
654 | |
655 | install_minimal_symbols (objfile); | |
656 | ||
7134143f DJ |
657 | /* Free the installed minimal symbol data. */ |
658 | do_cleanups (cleanup_minimal_symbols); | |
659 | ||
12b9c64f | 660 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
661 | |
662 | if (info->stabsects) | |
663 | { | |
c5aa993b | 664 | if (!info->stabstrsect) |
b83266a0 | 665 | { |
3e43a32a MS |
666 | error (_("The debugging information in `%s' is corrupted.\nThe " |
667 | "file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 668 | name); |
b83266a0 SS |
669 | } |
670 | ||
c906108c | 671 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 672 | bfd_get_section_contents? */ |
c906108c SS |
673 | bfd_seek (abfd, abfd->where, 0); |
674 | ||
675 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
676 | ||
677 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
678 | info->textaddr, info->textsize, |
679 | info->stabsects, | |
680 | info->stabstrsect->filepos, stabstrsize); | |
681 | } | |
251d32d9 | 682 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
683 | { |
684 | /* DWARF2 sections. */ | |
f29dff0a | 685 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 686 | } |
c906108c | 687 | |
fea25152 BF |
688 | dwarf2_build_frame_info (objfile); |
689 | ||
9cce227f TG |
690 | /* Try to add separate debug file if no symbols table found. */ |
691 | if (!objfile_has_partial_symbols (objfile)) | |
692 | { | |
693 | char *debugfile; | |
694 | ||
695 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
8ac244b4 | 696 | make_cleanup (xfree, debugfile); |
9cce227f TG |
697 | |
698 | if (debugfile) | |
699 | { | |
700 | bfd *abfd = symfile_bfd_open (debugfile); | |
c5504eaf | 701 | |
8ac244b4 | 702 | make_cleanup_bfd_unref (abfd); |
9cce227f | 703 | symbol_file_add_separate (abfd, symfile_flags, objfile); |
9cce227f TG |
704 | } |
705 | } | |
706 | ||
c906108c SS |
707 | do_cleanups (back_to); |
708 | } | |
709 | ||
710 | static void | |
fba45db2 | 711 | coff_new_init (struct objfile *ignore) |
c906108c SS |
712 | { |
713 | } | |
714 | ||
aff410f1 MS |
715 | /* Perform any local cleanups required when we are done with a |
716 | particular objfile. I.E, we are in the process of discarding all | |
717 | symbol information for an objfile, freeing up all memory held for | |
718 | it, and unlinking the objfile struct from the global list of known | |
719 | objfiles. */ | |
c906108c SS |
720 | |
721 | static void | |
fba45db2 | 722 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 723 | { |
aff410f1 | 724 | /* Let stabs reader clean up. */ |
7be570e7 | 725 | stabsread_clear_cache (); |
fe3e1990 DJ |
726 | |
727 | dwarf2_free_objfile (objfile); | |
c906108c | 728 | } |
c906108c | 729 | \f |
c5aa993b | 730 | |
c906108c SS |
731 | /* Given pointers to a symbol table in coff style exec file, |
732 | analyze them and create struct symtab's describing the symbols. | |
733 | NSYMS is the number of symbols in the symbol table. | |
734 | We read them one at a time using read_one_sym (). */ | |
735 | ||
736 | static void | |
fba45db2 KB |
737 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
738 | struct objfile *objfile) | |
c906108c | 739 | { |
5e2b427d | 740 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 741 | struct context_stack *new; |
c906108c | 742 | struct coff_symbol coff_symbol; |
52f0bd74 | 743 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
744 | static struct internal_syment main_sym; |
745 | static union internal_auxent main_aux; | |
746 | struct coff_symbol fcn_cs_saved; | |
747 | static struct internal_syment fcn_sym_saved; | |
748 | static union internal_auxent fcn_aux_saved; | |
749 | struct symtab *s; | |
750 | /* A .file is open. */ | |
751 | int in_source_file = 0; | |
752 | int next_file_symnum = -1; | |
753 | /* Name of the current file. */ | |
9f37bbcc | 754 | const char *filestring = ""; |
c906108c SS |
755 | int depth = 0; |
756 | int fcn_first_line = 0; | |
b9179dbc | 757 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
758 | int fcn_last_line = 0; |
759 | int fcn_start_addr = 0; | |
760 | long fcn_line_ptr = 0; | |
761 | int val; | |
762 | CORE_ADDR tmpaddr; | |
05cfdb42 | 763 | struct minimal_symbol *msym; |
c906108c SS |
764 | |
765 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
aff410f1 MS |
766 | it's hard to know I've really worked around it. The fix should |
767 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
768 | fread (in read_one_sym), will (in my example) actually get data |
769 | from file offset 268, when the fseek was to 264 (and ftell shows | |
770 | 264). This causes all hell to break loose. I was unable to | |
771 | reproduce this on a short test program which operated on the same | |
772 | file, performing (I think) the same sequence of operations. | |
773 | ||
774 | It stopped happening when I put in this (former) rewind(). | |
775 | ||
776 | FIXME: Find out if this has been reported to Sun, whether it has | |
777 | been fixed in a later release, etc. */ | |
778 | ||
779 | bfd_seek (objfile->obfd, 0, 0); | |
780 | ||
aff410f1 | 781 | /* Position to read the symbol table. */ |
c906108c SS |
782 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
783 | if (val < 0) | |
784 | perror_with_name (objfile->name); | |
785 | ||
dd707e8e | 786 | coffread_objfile = objfile; |
c906108c SS |
787 | nlist_bfd_global = objfile->obfd; |
788 | nlist_nsyms_global = nsyms; | |
46212e0b | 789 | set_last_source_file (NULL); |
c906108c SS |
790 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
791 | ||
aff410f1 | 792 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 793 | xfree (type_vector); |
c906108c SS |
794 | type_vector_length = 160; |
795 | type_vector = (struct type **) | |
796 | xmalloc (type_vector_length * sizeof (struct type *)); | |
797 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
798 | ||
799 | coff_start_symtab (""); | |
800 | ||
801 | symnum = 0; | |
802 | while (symnum < nsyms) | |
803 | { | |
804 | QUIT; /* Make this command interruptable. */ | |
805 | ||
806 | read_one_sym (cs, &main_sym, &main_aux); | |
807 | ||
808 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
809 | { | |
46212e0b | 810 | if (get_last_source_file ()) |
c906108c SS |
811 | coff_end_symtab (objfile); |
812 | ||
813 | coff_start_symtab ("_globals_"); | |
969107c5 EZ |
814 | /* coff_start_symtab will set the language of this symtab to |
815 | language_unknown, since such a ``file name'' is not | |
816 | recognized. Override that with the minimal language to | |
817 | allow printing values in this symtab. */ | |
818 | current_subfile->language = language_minimal; | |
c906108c | 819 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
820 | /* Done with all files, everything from here on out is |
821 | globals. */ | |
c906108c SS |
822 | } |
823 | ||
aff410f1 MS |
824 | /* Special case for file with type declarations only, no |
825 | text. */ | |
46212e0b | 826 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
827 | && cs->c_secnum == N_DEBUG) |
828 | complete_symtab (filestring, 0, 0); | |
829 | ||
830 | /* Typedefs should not be treated as symbol definitions. */ | |
831 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
832 | { | |
aff410f1 MS |
833 | /* Record all functions -- external and static -- in |
834 | minsyms. */ | |
fbcebcb1 | 835 | int section = cs_to_section (cs, objfile); |
c5504eaf | 836 | |
aff410f1 MS |
837 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, |
838 | SECT_OFF_TEXT (objfile)); | |
839 | record_minimal_symbol (cs, tmpaddr, mst_text, | |
840 | section, objfile); | |
c906108c SS |
841 | |
842 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
843 | fcn_start_addr = tmpaddr; | |
844 | fcn_cs_saved = *cs; | |
845 | fcn_sym_saved = main_sym; | |
846 | fcn_aux_saved = main_aux; | |
847 | continue; | |
848 | } | |
849 | ||
850 | switch (cs->c_sclass) | |
851 | { | |
c5aa993b JM |
852 | case C_EFCN: |
853 | case C_EXTDEF: | |
854 | case C_ULABEL: | |
855 | case C_USTATIC: | |
856 | case C_LINE: | |
857 | case C_ALIAS: | |
858 | case C_HIDDEN: | |
aff410f1 MS |
859 | complaint (&symfile_complaints, |
860 | _("Bad n_sclass for symbol %s"), | |
23136709 | 861 | cs->c_name); |
c5aa993b | 862 | break; |
c906108c | 863 | |
c5aa993b | 864 | case C_FILE: |
aff410f1 MS |
865 | /* c_value field contains symnum of next .file entry in |
866 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
867 | next_file_symnum = cs->c_value; |
868 | if (cs->c_naux > 0) | |
869 | filestring = coff_getfilename (&main_aux); | |
870 | else | |
871 | filestring = ""; | |
872 | ||
873 | /* Complete symbol table for last object file | |
874 | containing debugging information. */ | |
46212e0b | 875 | if (get_last_source_file ()) |
c5aa993b JM |
876 | { |
877 | coff_end_symtab (objfile); | |
878 | coff_start_symtab (filestring); | |
879 | } | |
880 | in_source_file = 1; | |
881 | break; | |
c906108c | 882 | |
aff410f1 MS |
883 | /* C_LABEL is used for labels and static functions. |
884 | Including it here allows gdb to see static functions when | |
885 | no debug info is available. */ | |
c5aa993b | 886 | case C_LABEL: |
aff410f1 MS |
887 | /* However, labels within a function can make weird |
888 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
889 | if (within_function) |
890 | break; | |
891 | case C_STAT: | |
892 | case C_THUMBLABEL: | |
893 | case C_THUMBSTAT: | |
894 | case C_THUMBSTATFUNC: | |
895 | if (cs->c_name[0] == '.') | |
896 | { | |
7ecb6532 | 897 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 898 | { |
aff410f1 MS |
899 | /* FIXME: don't wire in ".text" as section name or |
900 | symbol name! */ | |
901 | /* Check for in_source_file deals with case of a | |
902 | file with debugging symbols followed by a later | |
903 | file with no symbols. */ | |
c906108c SS |
904 | if (in_source_file) |
905 | complete_symtab (filestring, | |
aff410f1 MS |
906 | cs->c_value + ANOFFSET (objfile->section_offsets, |
907 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
908 | main_aux.x_scn.x_scnlen); |
909 | in_source_file = 0; | |
910 | } | |
aff410f1 | 911 | /* Flush rest of '.' symbols. */ |
c906108c | 912 | break; |
c5aa993b JM |
913 | } |
914 | else if (!SDB_TYPE (cs->c_type) | |
915 | && cs->c_name[0] == 'L' | |
916 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
917 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
918 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
919 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
920 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
921 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
922 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
923 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
924 | /* At least on a 3b1, gcc generates swbeg and string labels | |
925 | that look like this. Ignore them. */ | |
926 | break; | |
aff410f1 | 927 | /* Fall in for static symbols that don't start with '.' */ |
c5aa993b JM |
928 | case C_THUMBEXT: |
929 | case C_THUMBEXTFUNC: | |
930 | case C_EXT: | |
931 | { | |
932 | /* Record it in the minimal symbols regardless of | |
933 | SDB_TYPE. This parallels what we do for other debug | |
934 | formats, and probably is needed to make | |
935 | print_address_symbolic work right without the (now | |
936 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 937 | |
c5aa993b JM |
938 | enum minimal_symbol_type ms_type; |
939 | int sec; | |
c906108c | 940 | |
c5aa993b JM |
941 | if (cs->c_secnum == N_UNDEF) |
942 | { | |
d4862372 JB |
943 | /* This is a common symbol. We used to rely on |
944 | the target to tell us whether it knows where | |
945 | the symbol has been relocated to, but none of | |
946 | the target implementations actually provided | |
947 | that operation. So we just ignore the symbol, | |
948 | the same way we would do if we had a target-side | |
949 | symbol lookup which returned no match. */ | |
950 | break; | |
c5aa993b | 951 | } |
182d43bc EZ |
952 | else if (cs->c_secnum == N_ABS) |
953 | { | |
954 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 955 | relocate) for absolute values. */ |
182d43bc EZ |
956 | ms_type = mst_abs; |
957 | sec = cs_to_section (cs, objfile); | |
958 | tmpaddr = cs->c_value; | |
959 | } | |
c5aa993b JM |
960 | else |
961 | { | |
05cfdb42 | 962 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 963 | |
c5aa993b JM |
964 | sec = cs_to_section (cs, objfile); |
965 | tmpaddr = cs->c_value; | |
aff410f1 | 966 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
967 | if (cs->c_sclass == C_EXT |
968 | || cs->c_sclass == C_THUMBEXTFUNC | |
969 | || cs->c_sclass == C_THUMBEXT | |
970 | || (pe_file && (cs->c_sclass == C_STAT))) | |
96baa820 | 971 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 972 | |
05cfdb42 | 973 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 974 | { |
c5aa993b JM |
975 | ms_type = |
976 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
977 | || cs->c_sclass == C_THUMBEXT ? | |
978 | mst_text : mst_file_text; | |
85ddcc70 | 979 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 980 | } |
05cfdb42 DJ |
981 | else if (bfd_section->flags & SEC_ALLOC |
982 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 983 | { |
c5aa993b | 984 | ms_type = |
aff410f1 MS |
985 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
986 | ? mst_data : mst_file_data; | |
34e924c0 | 987 | } |
05cfdb42 | 988 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 989 | { |
c5aa993b | 990 | ms_type = |
aff410f1 MS |
991 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
992 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
993 | } |
994 | else | |
995 | ms_type = mst_unknown; | |
c5aa993b | 996 | } |
c906108c | 997 | |
aff410f1 MS |
998 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, |
999 | sec, objfile); | |
05cfdb42 | 1000 | if (msym) |
aff410f1 MS |
1001 | gdbarch_coff_make_msymbol_special (gdbarch, |
1002 | cs->c_sclass, msym); | |
fbcebcb1 | 1003 | |
c5aa993b JM |
1004 | if (SDB_TYPE (cs->c_type)) |
1005 | { | |
1006 | struct symbol *sym; | |
c5504eaf | 1007 | |
c5aa993b | 1008 | sym = process_coff_symbol |
96baa820 | 1009 | (cs, &main_aux, objfile); |
c5aa993b JM |
1010 | SYMBOL_VALUE (sym) = tmpaddr; |
1011 | SYMBOL_SECTION (sym) = sec; | |
1012 | } | |
1013 | } | |
1014 | break; | |
1015 | ||
1016 | case C_FCN: | |
7ecb6532 | 1017 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1018 | { |
1019 | within_function = 1; | |
1020 | ||
aff410f1 MS |
1021 | /* Value contains address of first non-init type |
1022 | code. */ | |
c5aa993b | 1023 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1024 | contains line number of '{' }. */ |
c5aa993b | 1025 | if (cs->c_naux != 1) |
23136709 | 1026 | complaint (&symfile_complaints, |
aff410f1 MS |
1027 | _("`.bf' symbol %d has no aux entry"), |
1028 | cs->c_symnum); | |
c5aa993b JM |
1029 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1030 | fcn_first_line_addr = cs->c_value; | |
1031 | ||
1032 | /* Might want to check that locals are 0 and | |
1033 | context_stack_depth is zero, and complain if not. */ | |
1034 | ||
1035 | depth = 0; | |
1036 | new = push_context (depth, fcn_start_addr); | |
1037 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
1038 | new->name = | |
aff410f1 MS |
1039 | process_coff_symbol (&fcn_cs_saved, |
1040 | &fcn_aux_saved, objfile); | |
c5aa993b | 1041 | } |
7ecb6532 | 1042 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1043 | { |
b9179dbc | 1044 | if (!within_function) |
8a3fe4f8 | 1045 | error (_("Bad coff function information.")); |
aff410f1 | 1046 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1047 | not useful for gdb. */ |
1048 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1049 | contains number of lines to '}' */ | |
1050 | ||
1051 | if (context_stack_depth <= 0) | |
aff410f1 | 1052 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1053 | complaint (&symfile_complaints, |
3e43a32a MS |
1054 | _("`.ef' symbol without matching `.bf' " |
1055 | "symbol ignored starting at symnum %d"), | |
23136709 | 1056 | cs->c_symnum); |
c5aa993b JM |
1057 | within_function = 0; |
1058 | break; | |
c906108c | 1059 | } |
c5aa993b JM |
1060 | |
1061 | new = pop_context (); | |
1062 | /* Stack must be empty now. */ | |
1063 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 1064 | { |
23136709 | 1065 | complaint (&symfile_complaints, |
3e43a32a MS |
1066 | _("Unmatched .ef symbol(s) ignored " |
1067 | "starting at symnum %d"), | |
23136709 | 1068 | cs->c_symnum); |
c5aa993b JM |
1069 | within_function = 0; |
1070 | break; | |
c906108c | 1071 | } |
c5aa993b JM |
1072 | if (cs->c_naux != 1) |
1073 | { | |
23136709 | 1074 | complaint (&symfile_complaints, |
aff410f1 MS |
1075 | _("`.ef' symbol %d has no aux entry"), |
1076 | cs->c_symnum); | |
c5aa993b JM |
1077 | fcn_last_line = 0x7FFFFFFF; |
1078 | } | |
1079 | else | |
1080 | { | |
1081 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1082 | } | |
1083 | /* fcn_first_line is the line number of the opening '{'. | |
1084 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1085 | of the line number of the first statement of the |
1086 | function - except for one-line functions, for which | |
1087 | it is also the line number of all the statements and | |
1088 | of the closing '}', and for which we do not have any | |
1089 | other statement-line-number. */ | |
c5aa993b JM |
1090 | if (fcn_last_line == 1) |
1091 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1092 | gdbarch_addr_bits_remove (gdbarch, |
1093 | fcn_first_line_addr)); | |
c5aa993b | 1094 | else |
aff410f1 MS |
1095 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1096 | fcn_last_line, objfile); | |
c906108c | 1097 | |
aff410f1 MS |
1098 | finish_block (new->name, &local_symbols, |
1099 | new->old_blocks, new->start_addr, | |
c5aa993b JM |
1100 | fcn_cs_saved.c_value |
1101 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 MS |
1102 | + ANOFFSET (objfile->section_offsets, |
1103 | SECT_OFF_TEXT (objfile)), | |
c5aa993b JM |
1104 | objfile |
1105 | ); | |
1106 | within_function = 0; | |
1107 | } | |
1108 | break; | |
c906108c | 1109 | |
c5aa993b | 1110 | case C_BLOCK: |
7ecb6532 | 1111 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1112 | { |
1113 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1114 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1115 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1116 | push_context (++depth, tmpaddr); |
1117 | } | |
7ecb6532 | 1118 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1119 | { |
1120 | if (context_stack_depth <= 0) | |
0963b4bd | 1121 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1122 | complaint (&symfile_complaints, |
3e43a32a MS |
1123 | _("`.eb' symbol without matching `.bb' " |
1124 | "symbol ignored starting at symnum %d"), | |
23136709 | 1125 | cs->c_symnum); |
c5aa993b JM |
1126 | break; |
1127 | } | |
c906108c | 1128 | |
c5aa993b JM |
1129 | new = pop_context (); |
1130 | if (depth-- != new->depth) | |
1131 | { | |
3e43a32a MS |
1132 | complaint (&symfile_complaints, |
1133 | _("Mismatched .eb symbol ignored " | |
1134 | "starting at symnum %d"), | |
23136709 | 1135 | symnum); |
c5aa993b JM |
1136 | break; |
1137 | } | |
1138 | if (local_symbols && context_stack_depth > 0) | |
1139 | { | |
1140 | tmpaddr = | |
aff410f1 MS |
1141 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1142 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1143 | /* Make a block for the local symbols within. */ |
1144 | finish_block (0, &local_symbols, new->old_blocks, | |
1145 | new->start_addr, tmpaddr, objfile); | |
1146 | } | |
1147 | /* Now pop locals of block just finished. */ | |
1148 | local_symbols = new->locals; | |
1149 | } | |
1150 | break; | |
c906108c | 1151 | |
c5aa993b | 1152 | default: |
96baa820 | 1153 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1154 | break; |
c906108c SS |
1155 | } |
1156 | } | |
1157 | ||
1b6bc7e0 CF |
1158 | if ((nsyms == 0) && (pe_file)) |
1159 | { | |
c2f20dd6 | 1160 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1161 | executable, so try to read the export table. */ |
1b6bc7e0 CF |
1162 | read_pe_exported_syms (objfile); |
1163 | } | |
1164 | ||
46212e0b | 1165 | if (get_last_source_file ()) |
c906108c SS |
1166 | coff_end_symtab (objfile); |
1167 | ||
1168 | /* Patch up any opaque types (references to types that are not defined | |
1169 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1170 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1171 | patch_opaque_types (s); | |
1172 | ||
dd707e8e | 1173 | coffread_objfile = NULL; |
c906108c SS |
1174 | } |
1175 | \f | |
1176 | /* Routines for reading headers and symbols from executable. */ | |
1177 | ||
aff410f1 MS |
1178 | /* Read the next symbol, swap it, and return it in both |
1179 | internal_syment form, and coff_symbol form. Also return its first | |
1180 | auxent, if any, in internal_auxent form, and skip any other | |
1181 | auxents. */ | |
c906108c SS |
1182 | |
1183 | static void | |
aa1ee363 AC |
1184 | read_one_sym (struct coff_symbol *cs, |
1185 | struct internal_syment *sym, | |
1186 | union internal_auxent *aux) | |
c906108c SS |
1187 | { |
1188 | int i; | |
3b016d57 | 1189 | bfd_size_type bytes; |
c906108c SS |
1190 | |
1191 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1192 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1193 | if (bytes != local_symesz) | |
dd707e8e | 1194 | error (_("%s: error reading symbols"), coffread_objfile->name); |
c5aa993b | 1195 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1196 | cs->c_naux = sym->n_numaux & 0xff; |
1197 | if (cs->c_naux >= 1) | |
1198 | { | |
3b016d57 DJ |
1199 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1200 | if (bytes != local_auxesz) | |
dd707e8e | 1201 | error (_("%s: error reading symbols"), coffread_objfile->name); |
aff410f1 MS |
1202 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1203 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1204 | 0, cs->c_naux, (char *) aux); |
1205 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1206 | is important). */ |
c5aa993b | 1207 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1208 | { |
1209 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1210 | if (bytes != local_auxesz) | |
dd707e8e | 1211 | error (_("%s: error reading symbols"), coffread_objfile->name); |
3b016d57 | 1212 | } |
c906108c SS |
1213 | } |
1214 | cs->c_name = getsymname (sym); | |
1215 | cs->c_value = sym->n_value; | |
1216 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1217 | cs->c_secnum = sym->n_scnum; | |
1218 | cs->c_type = (unsigned) sym->n_type; | |
1219 | if (!SDB_TYPE (cs->c_type)) | |
1220 | cs->c_type = 0; | |
1221 | ||
1222 | #if 0 | |
1223 | if (cs->c_sclass & 128) | |
3d263c1d | 1224 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1225 | #endif |
1226 | ||
1227 | symnum += 1 + cs->c_naux; | |
1228 | ||
1229 | /* The PE file format stores symbol values as offsets within the | |
1230 | section, rather than as absolute addresses. We correct that | |
1231 | here, if the symbol has an appropriate storage class. FIXME: We | |
1232 | should use BFD to read the symbols, rather than duplicating the | |
1233 | work here. */ | |
1234 | if (pe_file) | |
1235 | { | |
1236 | switch (cs->c_sclass) | |
1237 | { | |
1238 | case C_EXT: | |
1239 | case C_THUMBEXT: | |
1240 | case C_THUMBEXTFUNC: | |
1241 | case C_SECTION: | |
1242 | case C_NT_WEAK: | |
1243 | case C_STAT: | |
1244 | case C_THUMBSTAT: | |
1245 | case C_THUMBSTATFUNC: | |
1246 | case C_LABEL: | |
1247 | case C_THUMBLABEL: | |
1248 | case C_BLOCK: | |
1249 | case C_FCN: | |
1250 | case C_EFCN: | |
1251 | if (cs->c_secnum != 0) | |
1252 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | } | |
1257 | \f | |
aff410f1 | 1258 | /* Support for string table handling. */ |
c906108c SS |
1259 | |
1260 | static char *stringtab = NULL; | |
1261 | ||
1262 | static int | |
fba45db2 | 1263 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1264 | { |
1265 | long length; | |
1266 | int val; | |
1267 | unsigned char lengthbuf[4]; | |
1268 | ||
1269 | free_stringtab (); | |
1270 | ||
1271 | /* If the file is stripped, the offset might be zero, indicating no | |
aff410f1 | 1272 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1273 | if (offset == 0) |
1274 | return 0; | |
1275 | ||
1276 | if (bfd_seek (abfd, offset, 0) < 0) | |
1277 | return -1; | |
1278 | ||
3a42e9d0 | 1279 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1280 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1281 | |
c906108c | 1282 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1283 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1284 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1285 | return 0; | |
1286 | ||
1287 | stringtab = (char *) xmalloc (length); | |
aff410f1 MS |
1288 | /* This is in target format (probably not very useful, and not |
1289 | currently used), not host format. */ | |
c906108c | 1290 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1291 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1292 | return 0; |
1293 | ||
aff410f1 MS |
1294 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1295 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1296 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1297 | return -1; | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | static void | |
fba45db2 | 1303 | free_stringtab (void) |
c906108c SS |
1304 | { |
1305 | if (stringtab) | |
b8c9b27d | 1306 | xfree (stringtab); |
c906108c SS |
1307 | stringtab = NULL; |
1308 | } | |
1309 | ||
74b7792f AC |
1310 | static void |
1311 | free_stringtab_cleanup (void *ignore) | |
1312 | { | |
1313 | free_stringtab (); | |
1314 | } | |
1315 | ||
c906108c | 1316 | static char * |
fba45db2 | 1317 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1318 | { |
c5aa993b | 1319 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1320 | char *result; |
1321 | ||
1322 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1323 | { | |
1324 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1325 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1326 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1331 | buffer[SYMNMLEN] = '\0'; | |
1332 | result = buffer; | |
1333 | } | |
1334 | return result; | |
1335 | } | |
1336 | ||
aff410f1 MS |
1337 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1338 | Return only the last component of the name. Result is in static | |
1339 | storage and is only good for temporary use. */ | |
c906108c | 1340 | |
9f37bbcc | 1341 | static const char * |
fba45db2 | 1342 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1343 | { |
1344 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1345 | const char *result; |
c906108c SS |
1346 | |
1347 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1348 | { |
1349 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1350 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1351 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1352 | } | |
c906108c SS |
1353 | else |
1354 | { | |
1355 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1356 | buffer[FILNMLEN] = '\0'; | |
1357 | } | |
1358 | result = buffer; | |
1359 | ||
1360 | /* FIXME: We should not be throwing away the information about what | |
1361 | directory. It should go into dirname of the symtab, or some such | |
1362 | place. */ | |
9f37bbcc | 1363 | result = lbasename (result); |
c906108c SS |
1364 | return (result); |
1365 | } | |
1366 | \f | |
1367 | /* Support for line number handling. */ | |
1368 | ||
1369 | static char *linetab = NULL; | |
1370 | static long linetab_offset; | |
1371 | static unsigned long linetab_size; | |
1372 | ||
1373 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1374 | external (unswapped) format in memory; we'll swap them as we enter | |
1375 | them into GDB's data structures. */ | |
c5aa993b | 1376 | |
c906108c | 1377 | static int |
fba45db2 | 1378 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1379 | { |
1380 | int val; | |
1381 | ||
1382 | linetab_offset = offset; | |
1383 | linetab_size = size; | |
1384 | ||
c5aa993b | 1385 | free_linetab (); |
c906108c SS |
1386 | |
1387 | if (size == 0) | |
1388 | return 0; | |
1389 | ||
1390 | if (bfd_seek (abfd, offset, 0) < 0) | |
1391 | return -1; | |
c5aa993b | 1392 | |
aff410f1 | 1393 | /* Allocate the desired table, plus a sentinel. */ |
c906108c SS |
1394 | linetab = (char *) xmalloc (size + local_linesz); |
1395 | ||
3a42e9d0 | 1396 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1397 | if (val != size) |
1398 | return -1; | |
1399 | ||
aff410f1 | 1400 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1401 | memset (linetab + size, 0, local_linesz); |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | static void | |
fba45db2 | 1407 | free_linetab (void) |
c906108c SS |
1408 | { |
1409 | if (linetab) | |
b8c9b27d | 1410 | xfree (linetab); |
c906108c SS |
1411 | linetab = NULL; |
1412 | } | |
1413 | ||
74b7792f AC |
1414 | static void |
1415 | free_linetab_cleanup (void *ignore) | |
1416 | { | |
1417 | free_linetab (); | |
1418 | } | |
1419 | ||
c906108c SS |
1420 | #if !defined (L_LNNO32) |
1421 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1422 | #endif | |
1423 | ||
1424 | static void | |
aa1ee363 AC |
1425 | enter_linenos (long file_offset, int first_line, |
1426 | int last_line, struct objfile *objfile) | |
c906108c | 1427 | { |
fbf65064 | 1428 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1429 | char *rawptr; |
c906108c SS |
1430 | struct internal_lineno lptr; |
1431 | ||
1432 | if (!linetab) | |
c5aa993b | 1433 | return; |
c906108c SS |
1434 | if (file_offset < linetab_offset) |
1435 | { | |
23136709 | 1436 | complaint (&symfile_complaints, |
3d263c1d | 1437 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1438 | file_offset); |
aff410f1 | 1439 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1440 | return; |
aff410f1 MS |
1441 | file_offset += linetab_offset; /* Try reading at that linetab |
1442 | offset. */ | |
c906108c | 1443 | } |
c5aa993b | 1444 | |
c906108c SS |
1445 | rawptr = &linetab[file_offset - linetab_offset]; |
1446 | ||
aff410f1 | 1447 | /* Skip first line entry for each function. */ |
c906108c | 1448 | rawptr += local_linesz; |
aff410f1 | 1449 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1450 | first_line--; |
1451 | ||
e6a8a7d2 EZ |
1452 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1453 | info), the next function's L_LNNO32 might not be zero, so don't | |
1454 | overstep the table's end in any case. */ | |
1455 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1456 | { |
1457 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1458 | rawptr += local_linesz; | |
e6a8a7d2 | 1459 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1460 | we exit. */ |
c5aa993b | 1461 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1462 | { |
1463 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1464 | addr += ANOFFSET (objfile->section_offsets, |
1465 | SECT_OFF_TEXT (objfile)); | |
1466 | record_line (current_subfile, | |
1467 | first_line + L_LNNO32 (&lptr), | |
fbf65064 UW |
1468 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1469 | } | |
c5aa993b JM |
1470 | else |
1471 | break; | |
1472 | } | |
c906108c SS |
1473 | } |
1474 | \f | |
1475 | static void | |
fba45db2 | 1476 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1477 | { |
52f0bd74 AC |
1478 | struct type *target = TYPE_TARGET_TYPE (type); |
1479 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1480 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1481 | ||
1482 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1483 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1484 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1485 | field_size); | |
c906108c | 1486 | |
aff410f1 MS |
1487 | memcpy (TYPE_FIELDS (target), |
1488 | TYPE_FIELDS (real_target), | |
1489 | field_size); | |
c906108c SS |
1490 | |
1491 | if (TYPE_NAME (real_target)) | |
1492 | { | |
0d5cff50 DE |
1493 | /* The previous copy of TYPE_NAME is allocated by |
1494 | process_coff_symbol. */ | |
c906108c | 1495 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1496 | xfree ((char*) TYPE_NAME (target)); |
1497 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1498 | } |
1499 | } | |
1500 | ||
1501 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1502 | so that they can be used to print out opaque data structures |
1503 | properly. */ | |
c906108c SS |
1504 | |
1505 | static void | |
fba45db2 | 1506 | patch_opaque_types (struct symtab *s) |
c906108c | 1507 | { |
52f0bd74 | 1508 | struct block *b; |
8157b174 | 1509 | struct block_iterator iter; |
52f0bd74 | 1510 | struct symbol *real_sym; |
c5aa993b | 1511 | |
aff410f1 | 1512 | /* Go through the per-file symbols only. */ |
c906108c | 1513 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1514 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1515 | { |
1516 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1517 | Remove syms from the chain when their types are stored, |
1518 | but search the whole chain, as there may be several syms | |
1519 | from different files with the same name. */ | |
5aafa1cc PM |
1520 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1521 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1522 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1523 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1524 | { |
0d5cff50 | 1525 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1526 | int hash = hashname (name); |
1527 | struct symbol *sym, *prev; | |
c5aa993b | 1528 | |
c906108c SS |
1529 | prev = 0; |
1530 | for (sym = opaque_type_chain[hash]; sym;) | |
1531 | { | |
5aafa1cc PM |
1532 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1533 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1534 | { |
1535 | if (prev) | |
1536 | { | |
1537 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1542 | } | |
c5aa993b | 1543 | |
c906108c | 1544 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1545 | |
c906108c SS |
1546 | if (prev) |
1547 | { | |
1548 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1549 | } | |
1550 | else | |
1551 | { | |
1552 | sym = opaque_type_chain[hash]; | |
1553 | } | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | prev = sym; | |
1558 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1559 | } | |
1560 | } | |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | \f | |
768a979c UW |
1565 | static int |
1566 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1567 | { | |
1568 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1569 | } | |
1570 | ||
1571 | static const struct symbol_register_ops coff_register_funcs = { | |
1572 | coff_reg_to_regnum | |
1573 | }; | |
1574 | ||
f1e6e072 TT |
1575 | /* The "aclass" index for computed COFF symbols. */ |
1576 | ||
1577 | static int coff_register_index; | |
1578 | ||
c906108c | 1579 | static struct symbol * |
aa1ee363 AC |
1580 | process_coff_symbol (struct coff_symbol *cs, |
1581 | union internal_auxent *aux, | |
fba45db2 | 1582 | struct objfile *objfile) |
c906108c | 1583 | { |
e623cf5d | 1584 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1585 | char *name; |
1586 | ||
c906108c SS |
1587 | name = cs->c_name; |
1588 | name = EXTERNAL_NAME (name, objfile->obfd); | |
f85f34ed TT |
1589 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
1590 | &objfile->objfile_obstack); | |
04a679b8 | 1591 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1592 | |
1593 | /* default assumptions */ | |
1594 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1595 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1596 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1597 | ||
1598 | if (ISFCN (cs->c_type)) | |
1599 | { | |
aff410f1 MS |
1600 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1601 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1602 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1603 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1604 | aux, objfile)); | |
c906108c | 1605 | |
f1e6e072 | 1606 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1607 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1608 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1609 | add_symbol_to_list (sym, &file_symbols); | |
1610 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1611 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1612 | add_symbol_to_list (sym, &global_symbols); | |
1613 | } | |
1614 | else | |
1615 | { | |
5e2b427d | 1616 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1617 | switch (cs->c_sclass) |
1618 | { | |
c5aa993b JM |
1619 | case C_NULL: |
1620 | break; | |
c906108c | 1621 | |
c5aa993b | 1622 | case C_AUTO: |
f1e6e072 | 1623 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c5aa993b JM |
1624 | add_symbol_to_list (sym, &local_symbols); |
1625 | break; | |
c906108c | 1626 | |
c5aa993b JM |
1627 | case C_THUMBEXT: |
1628 | case C_THUMBEXTFUNC: | |
1629 | case C_EXT: | |
f1e6e072 | 1630 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1631 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1632 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1633 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1634 | add_symbol_to_list (sym, &global_symbols); |
1635 | break; | |
c906108c | 1636 | |
c5aa993b JM |
1637 | case C_THUMBSTAT: |
1638 | case C_THUMBSTATFUNC: | |
1639 | case C_STAT: | |
f1e6e072 | 1640 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1641 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1642 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1643 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1644 | if (within_function) |
1645 | { | |
aff410f1 | 1646 | /* Static symbol of local scope. */ |
c906108c SS |
1647 | add_symbol_to_list (sym, &local_symbols); |
1648 | } | |
c5aa993b JM |
1649 | else |
1650 | { | |
aff410f1 | 1651 | /* Static symbol at top level of file. */ |
c906108c SS |
1652 | add_symbol_to_list (sym, &file_symbols); |
1653 | } | |
c5aa993b | 1654 | break; |
c906108c SS |
1655 | |
1656 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1657 | case C_GLBLREG: |
c906108c | 1658 | #endif |
c5aa993b | 1659 | case C_REG: |
f1e6e072 | 1660 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1661 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b JM |
1662 | add_symbol_to_list (sym, &local_symbols); |
1663 | break; | |
c906108c | 1664 | |
c5aa993b JM |
1665 | case C_THUMBLABEL: |
1666 | case C_LABEL: | |
1667 | break; | |
c906108c | 1668 | |
c5aa993b | 1669 | case C_ARG: |
f1e6e072 | 1670 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1671 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1672 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1673 | break; |
c906108c | 1674 | |
c5aa993b | 1675 | case C_REGPARM: |
f1e6e072 | 1676 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1677 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1678 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1679 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1680 | break; |
c906108c | 1681 | |
c5aa993b | 1682 | case C_TPDEF: |
f1e6e072 | 1683 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1684 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1685 | |
0963b4bd | 1686 | /* If type has no name, give it one. */ |
c5aa993b JM |
1687 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1688 | { | |
1689 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1690 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1691 | { | |
aff410f1 MS |
1692 | /* If we are giving a name to a type such as |
1693 | "pointer to foo" or "function returning foo", we | |
1694 | better not set the TYPE_NAME. If the program | |
1695 | contains "typedef char *caddr_t;", we don't want | |
1696 | all variables of type char * to print as caddr_t. | |
1697 | This is not just a consequence of GDB's type | |
1698 | management; CC and GCC (at least through version | |
1699 | 2.4) both output variables of either type char * | |
1700 | or caddr_t with the type refering to the C_TPDEF | |
1701 | symbol for caddr_t. If a future compiler cleans | |
1702 | this up it GDB is not ready for it yet, but if it | |
1703 | becomes ready we somehow need to disable this | |
1704 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1705 | |
1706 | Sigh. | |
1707 | ||
1708 | Fortunately, this check seems not to be necessary | |
1709 | for anything except pointers or functions. */ | |
1710 | ; | |
1711 | } | |
1712 | else | |
1713 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1714 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1715 | } |
c906108c | 1716 | |
aff410f1 MS |
1717 | /* Keep track of any type which points to empty structured |
1718 | type, so it can be filled from a definition from another | |
1719 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1720 | not an empty structured type, though; the forward | |
1721 | references work themselves out via the magic of | |
1722 | coff_lookup_type. */ | |
5aafa1cc PM |
1723 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1724 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1725 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1726 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1727 | { |
3567439c | 1728 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1729 | |
c5aa993b JM |
1730 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1731 | opaque_type_chain[i] = sym; | |
1732 | } | |
1733 | add_symbol_to_list (sym, &file_symbols); | |
1734 | break; | |
c906108c | 1735 | |
c5aa993b JM |
1736 | case C_STRTAG: |
1737 | case C_UNTAG: | |
1738 | case C_ENTAG: | |
f1e6e072 | 1739 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1740 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1741 | |
1742 | /* Some compilers try to be helpful by inventing "fake" | |
1743 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1744 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
c5aa993b | 1745 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1746 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1747 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1748 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1749 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1750 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1751 | |
1752 | add_symbol_to_list (sym, &file_symbols); | |
1753 | break; | |
c906108c | 1754 | |
c5aa993b JM |
1755 | default: |
1756 | break; | |
c906108c SS |
1757 | } |
1758 | } | |
1759 | return sym; | |
1760 | } | |
1761 | \f | |
1762 | /* Decode a coff type specifier; return the type that is meant. */ | |
1763 | ||
1764 | static struct type * | |
aa1ee363 | 1765 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1766 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1767 | { |
52f0bd74 | 1768 | struct type *type = 0; |
c906108c SS |
1769 | unsigned int new_c_type; |
1770 | ||
1771 | if (c_type & ~N_BTMASK) | |
1772 | { | |
1773 | new_c_type = DECREF (c_type); | |
1774 | if (ISPTR (c_type)) | |
1775 | { | |
5e2b427d | 1776 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1777 | type = lookup_pointer_type (type); |
1778 | } | |
1779 | else if (ISFCN (c_type)) | |
1780 | { | |
5e2b427d | 1781 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1782 | type = lookup_function_type (type); |
1783 | } | |
1784 | else if (ISARY (c_type)) | |
1785 | { | |
1786 | int i, n; | |
aa1ee363 | 1787 | unsigned short *dim; |
c906108c SS |
1788 | struct type *base_type, *index_type, *range_type; |
1789 | ||
1790 | /* Define an array type. */ | |
aff410f1 | 1791 | /* auxent refers to array, not base type. */ |
c906108c SS |
1792 | if (aux->x_sym.x_tagndx.l == 0) |
1793 | cs->c_naux = 0; | |
1794 | ||
aff410f1 | 1795 | /* Shift the indices down. */ |
c906108c SS |
1796 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1797 | i = 1; | |
1798 | n = dim[0]; | |
1799 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1800 | *dim = *(dim + 1); | |
1801 | *dim = 0; | |
1802 | ||
5e2b427d | 1803 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1804 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 1805 | range_type = |
aff410f1 MS |
1806 | create_range_type ((struct type *) NULL, |
1807 | index_type, 0, n - 1); | |
c906108c | 1808 | type = |
aff410f1 MS |
1809 | create_array_type ((struct type *) NULL, |
1810 | base_type, range_type); | |
c906108c SS |
1811 | } |
1812 | return type; | |
1813 | } | |
1814 | ||
aff410f1 MS |
1815 | /* Reference to existing type. This only occurs with the struct, |
1816 | union, and enum types. EPI a29k coff fakes us out by producing | |
1817 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1818 | unions, and enums, so we have to check the c_sclass field. SCO | |
1819 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1820 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1821 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1822 | { | |
1823 | if (cs->c_sclass != C_STRTAG | |
1824 | && cs->c_sclass != C_UNTAG | |
1825 | && cs->c_sclass != C_ENTAG | |
1826 | && aux->x_sym.x_tagndx.l >= 0) | |
1827 | { | |
1828 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1829 | return type; | |
1830 | } | |
1831 | else | |
1832 | { | |
23136709 | 1833 | complaint (&symfile_complaints, |
3d263c1d | 1834 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1835 | cs->c_name); |
aff410f1 | 1836 | /* And fall through to decode_base_type... */ |
c906108c SS |
1837 | } |
1838 | } | |
1839 | ||
5e2b427d | 1840 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1841 | } |
1842 | ||
1843 | /* Decode a coff type specifier for function definition; | |
1844 | return the type that the function returns. */ | |
1845 | ||
1846 | static struct type * | |
aff410f1 MS |
1847 | decode_function_type (struct coff_symbol *cs, |
1848 | unsigned int c_type, | |
1849 | union internal_auxent *aux, | |
1850 | struct objfile *objfile) | |
c906108c SS |
1851 | { |
1852 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1853 | cs->c_naux = 0; /* auxent refers to function, not base |
1854 | type. */ | |
c906108c | 1855 | |
5e2b427d | 1856 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1857 | } |
1858 | \f | |
aff410f1 | 1859 | /* Basic C types. */ |
c906108c SS |
1860 | |
1861 | static struct type * | |
aff410f1 MS |
1862 | decode_base_type (struct coff_symbol *cs, |
1863 | unsigned int c_type, | |
1864 | union internal_auxent *aux, | |
1865 | struct objfile *objfile) | |
c906108c | 1866 | { |
5e2b427d | 1867 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1868 | struct type *type; |
1869 | ||
1870 | switch (c_type) | |
1871 | { | |
c5aa993b | 1872 | case T_NULL: |
aff410f1 | 1873 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1874 | return objfile_type (objfile)->builtin_void; |
c906108c | 1875 | |
c906108c | 1876 | #ifdef T_VOID |
c5aa993b JM |
1877 | case T_VOID: |
1878 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1879 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1880 | #endif |
1881 | ||
c5aa993b | 1882 | case T_CHAR: |
46bf5051 | 1883 | return objfile_type (objfile)->builtin_char; |
c906108c | 1884 | |
c5aa993b | 1885 | case T_SHORT: |
46bf5051 | 1886 | return objfile_type (objfile)->builtin_short; |
c906108c | 1887 | |
c5aa993b | 1888 | case T_INT: |
46bf5051 | 1889 | return objfile_type (objfile)->builtin_int; |
c906108c | 1890 | |
c5aa993b JM |
1891 | case T_LONG: |
1892 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1893 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1894 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1895 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1896 | else |
46bf5051 | 1897 | return objfile_type (objfile)->builtin_long; |
c906108c | 1898 | |
c5aa993b | 1899 | case T_FLOAT: |
46bf5051 | 1900 | return objfile_type (objfile)->builtin_float; |
c906108c | 1901 | |
c5aa993b | 1902 | case T_DOUBLE: |
46bf5051 | 1903 | return objfile_type (objfile)->builtin_double; |
c906108c | 1904 | |
c5aa993b | 1905 | case T_LNGDBL: |
46bf5051 | 1906 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1907 | |
c5aa993b JM |
1908 | case T_STRUCT: |
1909 | if (cs->c_naux != 1) | |
1910 | { | |
aff410f1 | 1911 | /* Anonymous structure type. */ |
c5aa993b JM |
1912 | type = coff_alloc_type (cs->c_symnum); |
1913 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1914 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1915 | /* This used to set the tag to "<opaque>". But I think |
1916 | setting it to NULL is right, and the printing code can | |
1917 | print it as "struct {...}". */ | |
c5aa993b JM |
1918 | TYPE_TAG_NAME (type) = NULL; |
1919 | INIT_CPLUS_SPECIFIC (type); | |
1920 | TYPE_LENGTH (type) = 0; | |
1921 | TYPE_FIELDS (type) = 0; | |
1922 | TYPE_NFIELDS (type) = 0; | |
1923 | } | |
1924 | else | |
1925 | { | |
1926 | type = coff_read_struct_type (cs->c_symnum, | |
1927 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1928 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1929 | objfile); | |
c5aa993b JM |
1930 | } |
1931 | return type; | |
c906108c | 1932 | |
c5aa993b JM |
1933 | case T_UNION: |
1934 | if (cs->c_naux != 1) | |
1935 | { | |
aff410f1 | 1936 | /* Anonymous union type. */ |
c5aa993b JM |
1937 | type = coff_alloc_type (cs->c_symnum); |
1938 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1939 | /* This used to set the tag to "<opaque>". But I think |
1940 | setting it to NULL is right, and the printing code can | |
1941 | print it as "union {...}". */ | |
c5aa993b JM |
1942 | TYPE_TAG_NAME (type) = NULL; |
1943 | INIT_CPLUS_SPECIFIC (type); | |
1944 | TYPE_LENGTH (type) = 0; | |
1945 | TYPE_FIELDS (type) = 0; | |
1946 | TYPE_NFIELDS (type) = 0; | |
1947 | } | |
1948 | else | |
1949 | { | |
1950 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1951 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1952 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1953 | objfile); | |
c5aa993b JM |
1954 | } |
1955 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1956 | return type; | |
c906108c | 1957 | |
c5aa993b JM |
1958 | case T_ENUM: |
1959 | if (cs->c_naux != 1) | |
1960 | { | |
aff410f1 | 1961 | /* Anonymous enum type. */ |
c5aa993b JM |
1962 | type = coff_alloc_type (cs->c_symnum); |
1963 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1964 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1965 | /* This used to set the tag to "<opaque>". But I think |
1966 | setting it to NULL is right, and the printing code can | |
1967 | print it as "enum {...}". */ | |
c5aa993b JM |
1968 | TYPE_TAG_NAME (type) = NULL; |
1969 | TYPE_LENGTH (type) = 0; | |
1970 | TYPE_FIELDS (type) = 0; | |
1971 | TYPE_NFIELDS (type) = 0; | |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | type = coff_read_enum_type (cs->c_symnum, | |
1976 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1977 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1978 | objfile); | |
c5aa993b JM |
1979 | } |
1980 | return type; | |
1981 | ||
1982 | case T_MOE: | |
aff410f1 | 1983 | /* Shouldn't show up here. */ |
c5aa993b | 1984 | break; |
c906108c | 1985 | |
c5aa993b | 1986 | case T_UCHAR: |
46bf5051 | 1987 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1988 | |
c5aa993b | 1989 | case T_USHORT: |
46bf5051 | 1990 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1991 | |
c5aa993b | 1992 | case T_UINT: |
46bf5051 | 1993 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1994 | |
c5aa993b JM |
1995 | case T_ULONG: |
1996 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1997 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1998 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1999 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 2000 | else |
46bf5051 | 2001 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 2002 | } |
aff410f1 MS |
2003 | complaint (&symfile_complaints, |
2004 | _("Unexpected type for symbol %s"), cs->c_name); | |
46bf5051 | 2005 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
2006 | } |
2007 | \f | |
2008 | /* This page contains subroutines of read_type. */ | |
2009 | ||
2010 | /* Read the description of a structure (or union type) and return an | |
2011 | object describing the type. */ | |
2012 | ||
2013 | static struct type * | |
5e2b427d UW |
2014 | coff_read_struct_type (int index, int length, int lastsym, |
2015 | struct objfile *objfile) | |
c906108c SS |
2016 | { |
2017 | struct nextfield | |
2018 | { | |
2019 | struct nextfield *next; | |
2020 | struct field field; | |
2021 | }; | |
2022 | ||
52f0bd74 AC |
2023 | struct type *type; |
2024 | struct nextfield *list = 0; | |
c906108c SS |
2025 | struct nextfield *new; |
2026 | int nfields = 0; | |
52f0bd74 | 2027 | int n; |
c906108c SS |
2028 | char *name; |
2029 | struct coff_symbol member_sym; | |
52f0bd74 | 2030 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2031 | struct internal_syment sub_sym; |
2032 | union internal_auxent sub_aux; | |
2033 | int done = 0; | |
2034 | ||
2035 | type = coff_alloc_type (index); | |
2036 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2037 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2038 | TYPE_LENGTH (type) = length; |
2039 | ||
2040 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2041 | { | |
2042 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2043 | name = ms->c_name; | |
5e2b427d | 2044 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2045 | |
2046 | switch (ms->c_sclass) | |
2047 | { | |
c5aa993b JM |
2048 | case C_MOS: |
2049 | case C_MOU: | |
2050 | ||
2051 | /* Get space to record the next field's data. */ | |
2052 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2053 | new->next = list; | |
2054 | list = new; | |
2055 | ||
2056 | /* Save the data. */ | |
10f0c4bb TT |
2057 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
2058 | name, strlen (name)); | |
aff410f1 MS |
2059 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2060 | &sub_aux, objfile); | |
d6a843b5 | 2061 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2062 | FIELD_BITSIZE (list->field) = 0; |
2063 | nfields++; | |
2064 | break; | |
c906108c | 2065 | |
c5aa993b JM |
2066 | case C_FIELD: |
2067 | ||
2068 | /* Get space to record the next field's data. */ | |
2069 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2070 | new->next = list; | |
2071 | list = new; | |
2072 | ||
2073 | /* Save the data. */ | |
10f0c4bb TT |
2074 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
2075 | name, strlen (name)); | |
aff410f1 MS |
2076 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2077 | &sub_aux, objfile); | |
d6a843b5 | 2078 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2079 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2080 | nfields++; | |
2081 | break; | |
c906108c | 2082 | |
c5aa993b JM |
2083 | case C_EOS: |
2084 | done = 1; | |
2085 | break; | |
c906108c SS |
2086 | } |
2087 | } | |
2088 | /* Now create the vector of fields, and record how big it is. */ | |
2089 | ||
2090 | TYPE_NFIELDS (type) = nfields; | |
2091 | TYPE_FIELDS (type) = (struct field *) | |
2092 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2093 | ||
2094 | /* Copy the saved-up fields into the field vector. */ | |
2095 | ||
2096 | for (n = nfields; list; list = list->next) | |
2097 | TYPE_FIELD (type, --n) = list->field; | |
2098 | ||
2099 | return type; | |
2100 | } | |
2101 | \f | |
2102 | /* Read a definition of an enumeration type, | |
2103 | and create and return a suitable type object. | |
2104 | Also defines the symbols that represent the values of the type. */ | |
2105 | ||
c906108c | 2106 | static struct type * |
5e2b427d UW |
2107 | coff_read_enum_type (int index, int length, int lastsym, |
2108 | struct objfile *objfile) | |
c906108c | 2109 | { |
5e2b427d | 2110 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2111 | struct symbol *sym; |
2112 | struct type *type; | |
c906108c SS |
2113 | int nsyms = 0; |
2114 | int done = 0; | |
2115 | struct pending **symlist; | |
2116 | struct coff_symbol member_sym; | |
52f0bd74 | 2117 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2118 | struct internal_syment sub_sym; |
2119 | union internal_auxent sub_aux; | |
2120 | struct pending *osyms, *syms; | |
2121 | int o_nsyms; | |
52f0bd74 | 2122 | int n; |
c906108c SS |
2123 | char *name; |
2124 | int unsigned_enum = 1; | |
2125 | ||
2126 | type = coff_alloc_type (index); | |
2127 | if (within_function) | |
2128 | symlist = &local_symbols; | |
2129 | else | |
2130 | symlist = &file_symbols; | |
2131 | osyms = *symlist; | |
2132 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2133 | ||
2134 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2135 | { | |
2136 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2137 | name = ms->c_name; | |
5e2b427d | 2138 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2139 | |
2140 | switch (ms->c_sclass) | |
2141 | { | |
c5aa993b | 2142 | case C_MOE: |
e623cf5d | 2143 | sym = allocate_symbol (objfile); |
c5aa993b | 2144 | |
3567439c | 2145 | SYMBOL_SET_LINKAGE_NAME (sym, |
10f0c4bb TT |
2146 | obstack_copy0 (&objfile->objfile_obstack, |
2147 | name, strlen (name))); | |
f1e6e072 | 2148 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2149 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2150 | SYMBOL_VALUE (sym) = ms->c_value; |
2151 | add_symbol_to_list (sym, symlist); | |
2152 | nsyms++; | |
2153 | break; | |
c906108c | 2154 | |
c5aa993b JM |
2155 | case C_EOS: |
2156 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2157 | up the count of how many symbols to read. So stop | |
2158 | on .eos. */ | |
2159 | done = 1; | |
2160 | break; | |
c906108c SS |
2161 | } |
2162 | } | |
2163 | ||
2164 | /* Now fill in the fields of the type-structure. */ | |
2165 | ||
2166 | if (length > 0) | |
2167 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2168 | else /* Assume ints. */ |
5e2b427d | 2169 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2170 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2171 | TYPE_NFIELDS (type) = nsyms; | |
2172 | TYPE_FIELDS (type) = (struct field *) | |
2173 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2174 | ||
2175 | /* Find the symbols for the values and put them into the type. | |
2176 | The symbols can be found in the symlist that we put them on | |
2177 | to cause them to be defined. osyms contains the old value | |
2178 | of that symlist; everything up to there was defined by us. */ | |
2179 | /* Note that we preserve the order of the enum constants, so | |
2180 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2181 | FOO, not LAST_THING. */ | |
2182 | ||
2183 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2184 | { | |
2185 | int j = 0; | |
2186 | ||
2187 | if (syms == osyms) | |
2188 | j = o_nsyms; | |
c5aa993b | 2189 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2190 | { |
2191 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2192 | |
c906108c | 2193 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2194 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2195 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2196 | if (SYMBOL_VALUE (xsym) < 0) |
2197 | unsigned_enum = 0; | |
2198 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2199 | } | |
2200 | if (syms == osyms) | |
2201 | break; | |
2202 | } | |
2203 | ||
2204 | if (unsigned_enum) | |
876cecd0 | 2205 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2206 | |
2207 | return type; | |
2208 | } | |
2209 | ||
aff410f1 | 2210 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2211 | |
00b5771c | 2212 | static const struct sym_fns coff_sym_fns = |
c906108c SS |
2213 | { |
2214 | bfd_target_coff_flavour, | |
aff410f1 MS |
2215 | coff_new_init, /* sym_new_init: init anything gbl to |
2216 | entire symtab */ | |
2217 | coff_symfile_init, /* sym_init: read initial info, setup | |
2218 | for sym_read() */ | |
2219 | coff_symfile_read, /* sym_read: read a symbol file into | |
2220 | symtab */ | |
b11896a5 | 2221 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2222 | coff_symfile_finish, /* sym_finish: finished with file, |
2223 | cleanup */ | |
2224 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2225 | internal form */ | |
2226 | default_symfile_segments, /* sym_segments: Get segment | |
2227 | information from a file */ | |
c295b2e5 | 2228 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2229 | |
2230 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2231 | section. */ | |
55aa24fb | 2232 | NULL, /* sym_probe_fns */ |
00b5771c | 2233 | &psym_functions |
c906108c SS |
2234 | }; |
2235 | ||
b8b98ad1 TT |
2236 | /* Free the per-objfile COFF data. */ |
2237 | ||
2238 | static void | |
2239 | coff_free_info (struct objfile *objfile, void *arg) | |
2240 | { | |
2241 | xfree (arg); | |
2242 | } | |
2243 | ||
c906108c | 2244 | void |
fba45db2 | 2245 | _initialize_coffread (void) |
c906108c SS |
2246 | { |
2247 | add_symtab_fns (&coff_sym_fns); | |
b8b98ad1 TT |
2248 | |
2249 | coff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
2250 | coff_free_info); | |
f1e6e072 TT |
2251 | |
2252 | coff_register_index | |
2253 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2254 | } |