Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
32d0add0 | 2 | Copyright (C) 1987-2015 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 | #include <ctype.h> |
29 | ||
30 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
31 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
c906108c SS |
32 | #include "objfiles.h" |
33 | #include "buildsym.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "stabsread.h" | |
36 | #include "complaints.h" | |
37 | #include "target.h" | |
fe898f56 | 38 | #include "block.h" |
de4f826b | 39 | #include "dictionary.h" |
c906108c | 40 | |
1b6bc7e0 CF |
41 | #include "coff-pe-read.h" |
42 | ||
ccefe4c4 TT |
43 | #include "psymtab.h" |
44 | ||
a14ed312 | 45 | extern void _initialize_coffread (void); |
392a587b | 46 | |
b8b98ad1 TT |
47 | /* Key for COFF-associated data. */ |
48 | ||
49 | static const struct objfile_data *coff_objfile_data_key; | |
50 | ||
91a81f69 TT |
51 | /* The objfile we are currently reading. */ |
52 | ||
dd707e8e | 53 | static struct objfile *coffread_objfile; |
91a81f69 | 54 | |
c5aa993b JM |
55 | struct coff_symfile_info |
56 | { | |
aff410f1 MS |
57 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
58 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 59 | |
aff410f1 MS |
60 | CORE_ADDR textaddr; /* Addr of .text section. */ |
61 | unsigned int textsize; /* Size of .text section. */ | |
c5aa993b | 62 | struct stab_section_list *stabsects; /* .stab sections. */ |
aff410f1 | 63 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
64 | char *stabstrdata; |
65 | }; | |
c906108c SS |
66 | |
67 | /* Translate an external name string into a user-visible name. */ | |
68 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
69 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
70 | ? string + 1 : string) | |
c906108c SS |
71 | |
72 | /* To be an sdb debug type, type must have at least a basic or primary | |
73 | derived type. Using this rather than checking against T_NULL is | |
74 | said to prevent core dumps if we try to operate on Michael Bloom | |
75 | dbx-in-coff file. */ | |
76 | ||
77 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
78 | ||
c906108c SS |
79 | /* Core address of start and end of text of current source file. |
80 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
81 | ||
82 | static CORE_ADDR current_source_start_addr; | |
83 | static CORE_ADDR current_source_end_addr; | |
84 | ||
85 | /* The addresses of the symbol table stream and number of symbols | |
86 | of the object file we are reading (as copied into core). */ | |
87 | ||
88 | static bfd *nlist_bfd_global; | |
89 | static int nlist_nsyms_global; | |
90 | ||
c906108c | 91 | |
aff410f1 MS |
92 | /* Pointers to scratch storage, used for reading raw symbols and |
93 | auxents. */ | |
c906108c SS |
94 | |
95 | static char *temp_sym; | |
96 | static char *temp_aux; | |
97 | ||
98 | /* Local variables that hold the shift and mask values for the | |
99 | COFF file that we are currently reading. These come back to us | |
100 | from BFD, and are referenced by their macro names, as well as | |
101 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
102 | macros from include/coff/internal.h . */ | |
103 | ||
c5aa993b JM |
104 | static unsigned local_n_btmask; |
105 | static unsigned local_n_btshft; | |
106 | static unsigned local_n_tmask; | |
107 | static unsigned local_n_tshift; | |
c906108c SS |
108 | |
109 | #define N_BTMASK local_n_btmask | |
110 | #define N_BTSHFT local_n_btshft | |
111 | #define N_TMASK local_n_tmask | |
112 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 113 | |
aff410f1 MS |
114 | /* Local variables that hold the sizes in the file of various COFF |
115 | structures. (We only need to know this to read them from the file | |
116 | -- BFD will then translate the data in them, into `internal_xxx' | |
117 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 118 | |
c5aa993b JM |
119 | static unsigned local_linesz; |
120 | static unsigned local_symesz; | |
121 | static unsigned local_auxesz; | |
c906108c SS |
122 | |
123 | /* This is set if this is a PE format file. */ | |
124 | ||
125 | static int pe_file; | |
126 | ||
127 | /* Chain of typedefs of pointers to empty struct/union types. | |
128 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
129 | ||
130 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
131 | ||
aff410f1 | 132 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 133 | |
c5aa993b JM |
134 | struct coff_symbol |
135 | { | |
136 | char *c_name; | |
aff410f1 MS |
137 | int c_symnum; /* Symbol number of this entry. */ |
138 | int c_naux; /* 0 if syment only, 1 if syment + | |
139 | auxent, etc. */ | |
5e8db398 | 140 | CORE_ADDR c_value; |
c5aa993b JM |
141 | int c_sclass; |
142 | int c_secnum; | |
143 | unsigned int c_type; | |
144 | }; | |
c906108c | 145 | |
fc474241 DE |
146 | /* Vector of types defined so far, indexed by their type numbers. */ |
147 | ||
148 | static struct type **type_vector; | |
149 | ||
150 | /* Number of elements allocated for type_vector currently. */ | |
151 | ||
152 | static int type_vector_length; | |
153 | ||
154 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
155 | realloc'd down to the size actually used, when completed. */ | |
156 | ||
157 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
158 | ||
a14ed312 | 159 | extern void stabsread_clear_cache (void); |
7be570e7 | 160 | |
5e2b427d UW |
161 | static struct type *coff_read_struct_type (int, int, int, |
162 | struct objfile *); | |
c906108c | 163 | |
a14ed312 | 164 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
165 | unsigned int, |
166 | union internal_auxent *, | |
5e2b427d | 167 | struct objfile *); |
c906108c | 168 | |
a14ed312 | 169 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
170 | union internal_auxent *, |
171 | struct objfile *); | |
c906108c | 172 | |
a14ed312 KB |
173 | static struct type *decode_function_type (struct coff_symbol *, |
174 | unsigned int, | |
5e2b427d UW |
175 | union internal_auxent *, |
176 | struct objfile *); | |
c906108c | 177 | |
5e2b427d UW |
178 | static struct type *coff_read_enum_type (int, int, int, |
179 | struct objfile *); | |
c906108c | 180 | |
a14ed312 KB |
181 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
182 | union internal_auxent *, | |
183 | struct objfile *); | |
c906108c | 184 | |
a14ed312 | 185 | static void patch_opaque_types (struct symtab *); |
c906108c | 186 | |
a14ed312 | 187 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 188 | |
a14ed312 | 189 | static void free_linetab (void); |
c906108c | 190 | |
74b7792f AC |
191 | static void free_linetab_cleanup (void *ignore); |
192 | ||
a14ed312 | 193 | static int init_lineno (bfd *, long, int); |
c906108c | 194 | |
a14ed312 | 195 | static char *getsymname (struct internal_syment *); |
c906108c | 196 | |
9f37bbcc | 197 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 198 | |
a14ed312 | 199 | static void free_stringtab (void); |
c906108c | 200 | |
74b7792f AC |
201 | static void free_stringtab_cleanup (void *ignore); |
202 | ||
a14ed312 | 203 | static int init_stringtab (bfd *, long); |
c906108c | 204 | |
a14ed312 | 205 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
206 | struct internal_syment *, |
207 | union internal_auxent *); | |
c906108c | 208 | |
a14ed312 | 209 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
210 | \f |
211 | /* We are called once per section from coff_symfile_read. We | |
212 | need to examine each section we are passed, check to see | |
213 | if it is something we are interested in processing, and | |
214 | if so, stash away some access information for the section. | |
215 | ||
216 | FIXME: The section names should not be hardwired strings (what | |
217 | should they be? I don't think most object file formats have enough | |
218 | section flags to specify what kind of debug section it is | |
219 | -kingdon). */ | |
220 | ||
221 | static void | |
12b9c64f | 222 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 223 | { |
52f0bd74 | 224 | struct coff_symfile_info *csi; |
c906108c SS |
225 | const char *name; |
226 | ||
227 | csi = (struct coff_symfile_info *) csip; | |
228 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 229 | if (strcmp (name, ".text") == 0) |
c906108c SS |
230 | { |
231 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
232 | csi->textsize += bfd_section_size (abfd, sectp); | |
233 | } | |
234 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
235 | { | |
236 | csi->textsize += bfd_section_size (abfd, sectp); | |
237 | } | |
7ecb6532 | 238 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
239 | { |
240 | csi->stabstrsect = sectp; | |
241 | } | |
242 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
243 | { | |
244 | const char *s; | |
245 | ||
246 | /* We can have multiple .stab sections if linked with | |
247 | --split-by-reloc. */ | |
248 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 249 | if (!isdigit (*s)) |
c906108c SS |
250 | break; |
251 | if (*s == '\0') | |
252 | { | |
253 | struct stab_section_list *n, **pn; | |
254 | ||
255 | n = ((struct stab_section_list *) | |
256 | xmalloc (sizeof (struct stab_section_list))); | |
257 | n->section = sectp; | |
258 | n->next = NULL; | |
259 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
260 | ; | |
261 | *pn = n; | |
262 | ||
263 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
264 | in coff_symfile_read, at which point we no longer need |
265 | the information. */ | |
b8c9b27d | 266 | make_cleanup (xfree, n); |
c906108c SS |
267 | } |
268 | } | |
269 | } | |
270 | ||
271 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 272 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 273 | |
c5aa993b JM |
274 | struct find_targ_sec_arg |
275 | { | |
276 | int targ_index; | |
277 | asection **resultp; | |
278 | }; | |
c906108c | 279 | |
c5aa993b | 280 | static void |
12b9c64f | 281 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 282 | { |
c5aa993b | 283 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 284 | |
c906108c SS |
285 | if (sect->target_index == args->targ_index) |
286 | *args->resultp = sect; | |
287 | } | |
288 | ||
fbcebcb1 DJ |
289 | /* Return the bfd_section that CS points to. */ |
290 | static struct bfd_section* | |
291 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
292 | { |
293 | asection *sect = NULL; | |
294 | struct find_targ_sec_arg args; | |
c906108c SS |
295 | |
296 | args.targ_index = cs->c_secnum; | |
297 | args.resultp = § | |
298 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
299 | return sect; |
300 | } | |
301 | ||
302 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
303 | static int | |
304 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
305 | { | |
306 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 307 | |
05cfdb42 DJ |
308 | if (sect == NULL) |
309 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 310 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
311 | } |
312 | ||
313 | /* Return the address of the section of a COFF symbol. */ | |
314 | ||
a14ed312 | 315 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
316 | |
317 | static CORE_ADDR | |
fba45db2 | 318 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
319 | { |
320 | asection *sect = NULL; | |
321 | struct find_targ_sec_arg args; | |
322 | CORE_ADDR addr = 0; | |
323 | ||
324 | args.targ_index = cs->c_secnum; | |
325 | args.resultp = § | |
326 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
327 | if (sect != NULL) | |
81b9b86e | 328 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
329 | return addr; |
330 | } | |
331 | ||
332 | /* Look up a coff type-number index. Return the address of the slot | |
333 | where the type for that index is stored. | |
334 | The type-number is in INDEX. | |
335 | ||
336 | This can be used for finding the type associated with that index | |
337 | or for associating a new type with the index. */ | |
338 | ||
339 | static struct type ** | |
aa1ee363 | 340 | coff_lookup_type (int index) |
c906108c SS |
341 | { |
342 | if (index >= type_vector_length) | |
343 | { | |
344 | int old_vector_length = type_vector_length; | |
345 | ||
346 | type_vector_length *= 2; | |
c5aa993b | 347 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
348 | type_vector_length = index * 2; |
349 | ||
350 | type_vector = (struct type **) | |
351 | xrealloc ((char *) type_vector, | |
352 | type_vector_length * sizeof (struct type *)); | |
353 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 354 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
355 | } |
356 | return &type_vector[index]; | |
357 | } | |
358 | ||
359 | /* Make sure there is a type allocated for type number index | |
360 | and return the type object. | |
361 | This can create an empty (zeroed) type object. */ | |
362 | ||
363 | static struct type * | |
fba45db2 | 364 | coff_alloc_type (int index) |
c906108c | 365 | { |
52f0bd74 AC |
366 | struct type **type_addr = coff_lookup_type (index); |
367 | struct type *type = *type_addr; | |
c906108c SS |
368 | |
369 | /* If we are referring to a type not known at all yet, | |
370 | allocate an empty type for it. | |
371 | We will fill it in later if we find out how. */ | |
372 | if (type == NULL) | |
373 | { | |
dd707e8e | 374 | type = alloc_type (coffread_objfile); |
c906108c SS |
375 | *type_addr = type; |
376 | } | |
377 | return type; | |
378 | } | |
379 | \f | |
c906108c SS |
380 | /* Start a new symtab for a new source file. |
381 | This is called when a COFF ".file" symbol is seen; | |
382 | it indicates the start of data for one original source file. */ | |
383 | ||
384 | static void | |
4d663531 | 385 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 386 | { |
4d663531 | 387 | start_symtab (objfile, |
aff410f1 MS |
388 | /* We fill in the filename later. start_symtab puts this pointer |
389 | into last_source_file and we put it in subfiles->name, which | |
390 | end_symtab frees; that's why it must be malloc'd. */ | |
1b36a34b | 391 | xstrdup (name), |
c5aa993b JM |
392 | /* We never know the directory name for COFF. */ |
393 | NULL, | |
394 | /* The start address is irrelevant, since we set | |
395 | last_source_start_addr in coff_end_symtab. */ | |
396 | 0); | |
c906108c | 397 | record_debugformat ("COFF"); |
c906108c SS |
398 | } |
399 | ||
400 | /* Save the vital information from when starting to read a file, | |
401 | for use when closing off the current file. | |
aff410f1 MS |
402 | NAME is the file name the symbols came from, START_ADDR is the |
403 | first text address for the file, and SIZE is the number of bytes of | |
404 | text. */ | |
c906108c SS |
405 | |
406 | static void | |
9f37bbcc | 407 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 408 | { |
46212e0b | 409 | set_last_source_file (name); |
c906108c SS |
410 | current_source_start_addr = start_addr; |
411 | current_source_end_addr = start_addr + size; | |
c906108c SS |
412 | } |
413 | ||
aff410f1 MS |
414 | /* Finish the symbol definitions for one main source file, close off |
415 | all the lexical contexts for that file (creating struct block's for | |
416 | them), then make the struct symtab for that file and put it in the | |
417 | list of all such. */ | |
c906108c SS |
418 | |
419 | static void | |
fba45db2 | 420 | coff_end_symtab (struct objfile *objfile) |
c906108c | 421 | { |
c906108c SS |
422 | last_source_start_addr = current_source_start_addr; |
423 | ||
4d663531 | 424 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 425 | |
aff410f1 | 426 | /* Reinitialize for beginning of new file. */ |
46212e0b | 427 | set_last_source_file (NULL); |
c906108c SS |
428 | } |
429 | \f | |
af312be7 JB |
430 | /* The linker sometimes generates some non-function symbols inside |
431 | functions referencing variables imported from another DLL. | |
432 | Return nonzero if the given symbol corresponds to one of them. */ | |
433 | ||
434 | static int | |
435 | is_import_fixup_symbol (struct coff_symbol *cs, | |
436 | enum minimal_symbol_type type) | |
437 | { | |
438 | /* The following is a bit of a heuristic using the characterictics | |
439 | of these fixup symbols, but should work well in practice... */ | |
440 | int i; | |
441 | ||
442 | /* Must be a non-static text symbol. */ | |
443 | if (type != mst_text) | |
444 | return 0; | |
445 | ||
446 | /* Must be a non-function symbol. */ | |
447 | if (ISFCN (cs->c_type)) | |
448 | return 0; | |
449 | ||
450 | /* The name must start with "__fu<digits>__". */ | |
451 | if (strncmp (cs->c_name, "__fu", 4) != 0) | |
452 | return 0; | |
453 | if (! isdigit (cs->c_name[4])) | |
454 | return 0; | |
455 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
456 | /* Nothing, just incrementing index past all digits. */; | |
457 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
458 | return 0; | |
459 | ||
460 | return 1; | |
461 | } | |
462 | ||
fbcebcb1 DJ |
463 | static struct minimal_symbol * |
464 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
465 | enum minimal_symbol_type type, int section, | |
466 | struct objfile *objfile) | |
c906108c | 467 | { |
aff410f1 | 468 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
469 | if (cs->c_name[0] == '@') |
470 | return NULL; | |
c906108c | 471 | |
af312be7 JB |
472 | if (is_import_fixup_symbol (cs, type)) |
473 | { | |
474 | /* Because the value of these symbols is within a function code | |
475 | range, these symbols interfere with the symbol-from-address | |
476 | reverse lookup; this manifests itselfs in backtraces, or any | |
477 | other commands that prints symbolic addresses. Just pretend | |
478 | these symbols do not exist. */ | |
479 | return NULL; | |
480 | } | |
481 | ||
aff410f1 | 482 | return prim_record_minimal_symbol_and_info (cs->c_name, address, |
e6dc44a8 | 483 | type, section, objfile); |
c906108c SS |
484 | } |
485 | \f | |
486 | /* coff_symfile_init () | |
487 | is the coff-specific initialization routine for reading symbols. | |
488 | It is passed a struct objfile which contains, among other things, | |
489 | the BFD for the file whose symbols are being read, and a slot for | |
490 | a pointer to "private data" which we fill with cookies and other | |
491 | treats for coff_symfile_read (). | |
492 | ||
aff410f1 MS |
493 | We will only be called if this is a COFF or COFF-like file. BFD |
494 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
495 | uses BFD's determination to vector to us. |
496 | ||
aff410f1 MS |
497 | The ultimate result is a new symtab (or, FIXME, eventually a |
498 | psymtab). */ | |
c906108c SS |
499 | |
500 | static void | |
fba45db2 | 501 | coff_symfile_init (struct objfile *objfile) |
c906108c | 502 | { |
d2f4b8fe | 503 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 504 | struct coff_symfile_info *coff; |
c906108c | 505 | |
d2f4b8fe TT |
506 | /* Allocate struct to keep track of stab reading. */ |
507 | dbx = XCNEW (struct dbx_symfile_info); | |
508 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 509 | |
aff410f1 | 510 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
511 | coff = XCNEW (struct coff_symfile_info); |
512 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
513 | |
514 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
515 | find this causes a significant slowdown in gdb then we could | |
516 | set it in the debug symbol readers only when necessary. */ | |
517 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
518 | } |
519 | ||
aff410f1 MS |
520 | /* This function is called for every section; it finds the outer |
521 | limits of the line table (minimum and maximum file offset) so that | |
522 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 523 | |
c906108c | 524 | static void |
7be0c536 | 525 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
526 | { |
527 | struct coff_symfile_info *info; | |
528 | int size, count; | |
529 | file_ptr offset, maxoff; | |
530 | ||
aff410f1 | 531 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 532 | count = asect->lineno_count; |
aff410f1 | 533 | /* End of warning. */ |
c906108c SS |
534 | |
535 | if (count == 0) | |
536 | return; | |
537 | size = count * local_linesz; | |
538 | ||
c5aa993b | 539 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 540 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 541 | offset = asect->line_filepos; |
aff410f1 | 542 | /* End of warning. */ |
c906108c SS |
543 | |
544 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
545 | info->min_lineno_offset = offset; | |
546 | ||
547 | maxoff = offset + size; | |
548 | if (maxoff > info->max_lineno_offset) | |
549 | info->max_lineno_offset = maxoff; | |
550 | } | |
551 | ||
552 | ||
553 | /* The BFD for this file -- only good while we're actively reading | |
554 | symbols into a psymtab or a symtab. */ | |
555 | ||
556 | static bfd *symfile_bfd; | |
557 | ||
558 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
559 | ||
c906108c | 560 | static void |
f4352531 | 561 | coff_symfile_read (struct objfile *objfile, int symfile_flags) |
c906108c SS |
562 | { |
563 | struct coff_symfile_info *info; | |
564 | struct dbx_symfile_info *dbxinfo; | |
565 | bfd *abfd = objfile->obfd; | |
566 | coff_data_type *cdata = coff_data (abfd); | |
567 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 568 | int val; |
745b8ca0 | 569 | unsigned int num_symbols; |
c906108c SS |
570 | int symtab_offset; |
571 | int stringtab_offset; | |
7134143f | 572 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 573 | int stabstrsize; |
c2d11a7d | 574 | |
b8b98ad1 | 575 | info = objfile_data (objfile, coff_objfile_data_key); |
d2f4b8fe | 576 | dbxinfo = DBX_SYMFILE_INFO (objfile); |
aff410f1 | 577 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c SS |
578 | |
579 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
580 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
581 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
582 | stringtab_offset = symtab_offset + /* String table file offset */ | |
583 | num_symbols * cdata->local_symesz; | |
c906108c SS |
584 | |
585 | /* Set a few file-statics that give us specific information about | |
586 | the particular COFF file format we're reading. */ | |
c906108c SS |
587 | local_n_btmask = cdata->local_n_btmask; |
588 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 589 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 590 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
591 | local_linesz = cdata->local_linesz; |
592 | local_symesz = cdata->local_symesz; | |
593 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
594 | |
595 | /* Allocate space for raw symbol and aux entries, based on their | |
596 | space requirements as reported by BFD. */ | |
597 | temp_sym = (char *) xmalloc | |
c5aa993b | 598 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 599 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 600 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
601 | |
602 | /* We need to know whether this is a PE file, because in PE files, | |
603 | unlike standard COFF files, symbol values are stored as offsets | |
604 | from the section address, rather than as absolute addresses. | |
605 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
606 | this problem. */ | |
0d06e24b JM |
607 | pe_file = |
608 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
609 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c | 610 | |
aff410f1 | 611 | /* End of warning. */ |
c906108c | 612 | |
c906108c SS |
613 | info->min_lineno_offset = 0; |
614 | info->max_lineno_offset = 0; | |
c906108c | 615 | |
ebeb39fe JB |
616 | /* Only read line number information if we have symbols. |
617 | ||
618 | On Windows NT, some of the system's DLL's have sections with | |
619 | PointerToLinenumbers fields that are non-zero, but point at | |
620 | random places within the image file. (In the case I found, | |
621 | KERNEL32.DLL's .text section has a line number info pointer that | |
622 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
623 | ||
624 | However, these DLL's also have no symbols. The line number | |
625 | tables are meaningless without symbols. And in fact, GDB never | |
626 | uses the line number information unless there are symbols. So we | |
627 | can avoid spurious error messages (and maybe run a little | |
628 | faster!) by not even reading the line number table unless we have | |
629 | symbols. */ | |
630 | if (num_symbols > 0) | |
631 | { | |
632 | /* Read the line number table, all at once. */ | |
633 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
634 | ||
635 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
636 | val = init_lineno (abfd, info->min_lineno_offset, | |
637 | info->max_lineno_offset - info->min_lineno_offset); | |
638 | if (val < 0) | |
8a3fe4f8 | 639 | error (_("\"%s\": error reading line numbers."), name); |
ebeb39fe | 640 | } |
c906108c SS |
641 | |
642 | /* Now read the string table, all at once. */ | |
643 | ||
74b7792f | 644 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
645 | val = init_stringtab (abfd, stringtab_offset); |
646 | if (val < 0) | |
3d263c1d | 647 | error (_("\"%s\": can't get string table"), name); |
c906108c SS |
648 | |
649 | init_minimal_symbol_collection (); | |
7134143f | 650 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
651 | |
652 | /* Now that the executable file is positioned at symbol table, | |
653 | process it and define symbols accordingly. */ | |
654 | ||
96baa820 | 655 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 656 | |
aff410f1 MS |
657 | /* Install any minimal symbols that have been collected as the |
658 | current minimal symbols for this objfile. */ | |
c906108c SS |
659 | |
660 | install_minimal_symbols (objfile); | |
661 | ||
303c5ee1 YQ |
662 | if (pe_file) |
663 | { | |
664 | struct minimal_symbol *msym; | |
665 | ||
666 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
667 | { | |
efd66ac6 | 668 | const char *name = MSYMBOL_LINKAGE_NAME (msym); |
303c5ee1 YQ |
669 | |
670 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
671 | or "_imp_", get rid of the prefix, and search the minimal | |
672 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
673 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
674 | if (MSYMBOL_TYPE (msym) == mst_data | |
675 | && (strncmp (name, "__imp_", 6) == 0 | |
676 | || strncmp (name, "_imp_", 5) == 0)) | |
677 | { | |
678 | const char *name1 = (name[1] == '_' ? &name[7] : &name[6]); | |
3b7344d5 | 679 | struct bound_minimal_symbol found; |
303c5ee1 YQ |
680 | |
681 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
682 | /* If found, there are symbols named "_imp_foo" and "foo" | |
683 | respectively in OBJFILE. Set the type of symbol "foo" | |
684 | as 'mst_solib_trampoline'. */ | |
3b7344d5 TT |
685 | if (found.minsym != NULL |
686 | && MSYMBOL_TYPE (found.minsym) == mst_text) | |
687 | MSYMBOL_TYPE (found.minsym) = mst_solib_trampoline; | |
303c5ee1 YQ |
688 | } |
689 | } | |
690 | } | |
691 | ||
7134143f DJ |
692 | /* Free the installed minimal symbol data. */ |
693 | do_cleanups (cleanup_minimal_symbols); | |
694 | ||
12b9c64f | 695 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
696 | |
697 | if (info->stabsects) | |
698 | { | |
c5aa993b | 699 | if (!info->stabstrsect) |
b83266a0 | 700 | { |
3e43a32a MS |
701 | error (_("The debugging information in `%s' is corrupted.\nThe " |
702 | "file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 703 | name); |
b83266a0 SS |
704 | } |
705 | ||
c906108c | 706 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 707 | bfd_get_section_contents? */ |
c906108c SS |
708 | bfd_seek (abfd, abfd->where, 0); |
709 | ||
710 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
711 | ||
712 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
713 | info->textaddr, info->textsize, |
714 | info->stabsects, | |
715 | info->stabstrsect->filepos, stabstrsize); | |
716 | } | |
251d32d9 | 717 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
718 | { |
719 | /* DWARF2 sections. */ | |
f29dff0a | 720 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 721 | } |
c906108c | 722 | |
fea25152 BF |
723 | dwarf2_build_frame_info (objfile); |
724 | ||
9cce227f TG |
725 | /* Try to add separate debug file if no symbols table found. */ |
726 | if (!objfile_has_partial_symbols (objfile)) | |
727 | { | |
728 | char *debugfile; | |
729 | ||
730 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
8ac244b4 | 731 | make_cleanup (xfree, debugfile); |
9cce227f TG |
732 | |
733 | if (debugfile) | |
734 | { | |
735 | bfd *abfd = symfile_bfd_open (debugfile); | |
c5504eaf | 736 | |
8ac244b4 | 737 | make_cleanup_bfd_unref (abfd); |
24ba069a | 738 | symbol_file_add_separate (abfd, debugfile, symfile_flags, objfile); |
9cce227f TG |
739 | } |
740 | } | |
741 | ||
c906108c SS |
742 | do_cleanups (back_to); |
743 | } | |
744 | ||
745 | static void | |
fba45db2 | 746 | coff_new_init (struct objfile *ignore) |
c906108c SS |
747 | { |
748 | } | |
749 | ||
aff410f1 MS |
750 | /* Perform any local cleanups required when we are done with a |
751 | particular objfile. I.E, we are in the process of discarding all | |
752 | symbol information for an objfile, freeing up all memory held for | |
753 | it, and unlinking the objfile struct from the global list of known | |
754 | objfiles. */ | |
c906108c SS |
755 | |
756 | static void | |
fba45db2 | 757 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 758 | { |
aff410f1 | 759 | /* Let stabs reader clean up. */ |
7be570e7 | 760 | stabsread_clear_cache (); |
fe3e1990 DJ |
761 | |
762 | dwarf2_free_objfile (objfile); | |
c906108c | 763 | } |
c906108c | 764 | \f |
c5aa993b | 765 | |
c906108c SS |
766 | /* Given pointers to a symbol table in coff style exec file, |
767 | analyze them and create struct symtab's describing the symbols. | |
768 | NSYMS is the number of symbols in the symbol table. | |
769 | We read them one at a time using read_one_sym (). */ | |
770 | ||
771 | static void | |
fba45db2 KB |
772 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
773 | struct objfile *objfile) | |
c906108c | 774 | { |
5e2b427d | 775 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 776 | struct context_stack *newobj; |
c906108c | 777 | struct coff_symbol coff_symbol; |
52f0bd74 | 778 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
779 | static struct internal_syment main_sym; |
780 | static union internal_auxent main_aux; | |
781 | struct coff_symbol fcn_cs_saved; | |
782 | static struct internal_syment fcn_sym_saved; | |
783 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
784 | /* A .file is open. */ |
785 | int in_source_file = 0; | |
786 | int next_file_symnum = -1; | |
787 | /* Name of the current file. */ | |
9f37bbcc | 788 | const char *filestring = ""; |
c906108c SS |
789 | int depth = 0; |
790 | int fcn_first_line = 0; | |
b9179dbc | 791 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
792 | int fcn_last_line = 0; |
793 | int fcn_start_addr = 0; | |
794 | long fcn_line_ptr = 0; | |
795 | int val; | |
796 | CORE_ADDR tmpaddr; | |
05cfdb42 | 797 | struct minimal_symbol *msym; |
c906108c SS |
798 | |
799 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
aff410f1 MS |
800 | it's hard to know I've really worked around it. The fix should |
801 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
802 | fread (in read_one_sym), will (in my example) actually get data |
803 | from file offset 268, when the fseek was to 264 (and ftell shows | |
804 | 264). This causes all hell to break loose. I was unable to | |
805 | reproduce this on a short test program which operated on the same | |
806 | file, performing (I think) the same sequence of operations. | |
807 | ||
808 | It stopped happening when I put in this (former) rewind(). | |
809 | ||
810 | FIXME: Find out if this has been reported to Sun, whether it has | |
811 | been fixed in a later release, etc. */ | |
812 | ||
813 | bfd_seek (objfile->obfd, 0, 0); | |
814 | ||
aff410f1 | 815 | /* Position to read the symbol table. */ |
c906108c SS |
816 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
817 | if (val < 0) | |
4262abfb | 818 | perror_with_name (objfile_name (objfile)); |
c906108c | 819 | |
dd707e8e | 820 | coffread_objfile = objfile; |
c906108c SS |
821 | nlist_bfd_global = objfile->obfd; |
822 | nlist_nsyms_global = nsyms; | |
46212e0b | 823 | set_last_source_file (NULL); |
c906108c SS |
824 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
825 | ||
aff410f1 | 826 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 827 | xfree (type_vector); |
fc474241 | 828 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
c906108c SS |
829 | type_vector = (struct type **) |
830 | xmalloc (type_vector_length * sizeof (struct type *)); | |
831 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
832 | ||
4d663531 | 833 | coff_start_symtab (objfile, ""); |
c906108c SS |
834 | |
835 | symnum = 0; | |
836 | while (symnum < nsyms) | |
837 | { | |
838 | QUIT; /* Make this command interruptable. */ | |
839 | ||
840 | read_one_sym (cs, &main_sym, &main_aux); | |
841 | ||
842 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
843 | { | |
46212e0b | 844 | if (get_last_source_file ()) |
c906108c SS |
845 | coff_end_symtab (objfile); |
846 | ||
4d663531 | 847 | coff_start_symtab (objfile, "_globals_"); |
969107c5 EZ |
848 | /* coff_start_symtab will set the language of this symtab to |
849 | language_unknown, since such a ``file name'' is not | |
850 | recognized. Override that with the minimal language to | |
851 | allow printing values in this symtab. */ | |
852 | current_subfile->language = language_minimal; | |
c906108c | 853 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
854 | /* Done with all files, everything from here on out is |
855 | globals. */ | |
c906108c SS |
856 | } |
857 | ||
aff410f1 MS |
858 | /* Special case for file with type declarations only, no |
859 | text. */ | |
46212e0b | 860 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
861 | && cs->c_secnum == N_DEBUG) |
862 | complete_symtab (filestring, 0, 0); | |
863 | ||
864 | /* Typedefs should not be treated as symbol definitions. */ | |
865 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
866 | { | |
aff410f1 MS |
867 | /* Record all functions -- external and static -- in |
868 | minsyms. */ | |
fbcebcb1 | 869 | int section = cs_to_section (cs, objfile); |
c5504eaf | 870 | |
2273f0ac | 871 | tmpaddr = cs->c_value; |
aff410f1 MS |
872 | record_minimal_symbol (cs, tmpaddr, mst_text, |
873 | section, objfile); | |
c906108c SS |
874 | |
875 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
876 | fcn_start_addr = tmpaddr; | |
877 | fcn_cs_saved = *cs; | |
878 | fcn_sym_saved = main_sym; | |
879 | fcn_aux_saved = main_aux; | |
880 | continue; | |
881 | } | |
882 | ||
883 | switch (cs->c_sclass) | |
884 | { | |
c5aa993b JM |
885 | case C_EFCN: |
886 | case C_EXTDEF: | |
887 | case C_ULABEL: | |
888 | case C_USTATIC: | |
889 | case C_LINE: | |
890 | case C_ALIAS: | |
891 | case C_HIDDEN: | |
aff410f1 MS |
892 | complaint (&symfile_complaints, |
893 | _("Bad n_sclass for symbol %s"), | |
23136709 | 894 | cs->c_name); |
c5aa993b | 895 | break; |
c906108c | 896 | |
c5aa993b | 897 | case C_FILE: |
aff410f1 MS |
898 | /* c_value field contains symnum of next .file entry in |
899 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
900 | next_file_symnum = cs->c_value; |
901 | if (cs->c_naux > 0) | |
902 | filestring = coff_getfilename (&main_aux); | |
903 | else | |
904 | filestring = ""; | |
905 | ||
906 | /* Complete symbol table for last object file | |
907 | containing debugging information. */ | |
46212e0b | 908 | if (get_last_source_file ()) |
c5aa993b JM |
909 | { |
910 | coff_end_symtab (objfile); | |
4d663531 | 911 | coff_start_symtab (objfile, filestring); |
c5aa993b JM |
912 | } |
913 | in_source_file = 1; | |
914 | break; | |
c906108c | 915 | |
aff410f1 MS |
916 | /* C_LABEL is used for labels and static functions. |
917 | Including it here allows gdb to see static functions when | |
918 | no debug info is available. */ | |
c5aa993b | 919 | case C_LABEL: |
aff410f1 MS |
920 | /* However, labels within a function can make weird |
921 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
922 | if (within_function) |
923 | break; | |
924 | case C_STAT: | |
925 | case C_THUMBLABEL: | |
926 | case C_THUMBSTAT: | |
927 | case C_THUMBSTATFUNC: | |
928 | if (cs->c_name[0] == '.') | |
929 | { | |
7ecb6532 | 930 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 931 | { |
aff410f1 MS |
932 | /* FIXME: don't wire in ".text" as section name or |
933 | symbol name! */ | |
934 | /* Check for in_source_file deals with case of a | |
935 | file with debugging symbols followed by a later | |
936 | file with no symbols. */ | |
c906108c SS |
937 | if (in_source_file) |
938 | complete_symtab (filestring, | |
aff410f1 MS |
939 | cs->c_value + ANOFFSET (objfile->section_offsets, |
940 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
941 | main_aux.x_scn.x_scnlen); |
942 | in_source_file = 0; | |
943 | } | |
aff410f1 | 944 | /* Flush rest of '.' symbols. */ |
c906108c | 945 | break; |
c5aa993b JM |
946 | } |
947 | else if (!SDB_TYPE (cs->c_type) | |
948 | && cs->c_name[0] == 'L' | |
949 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
950 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
951 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
952 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
953 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
954 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
955 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
956 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
957 | /* At least on a 3b1, gcc generates swbeg and string labels | |
958 | that look like this. Ignore them. */ | |
959 | break; | |
aff410f1 | 960 | /* Fall in for static symbols that don't start with '.' */ |
c5aa993b JM |
961 | case C_THUMBEXT: |
962 | case C_THUMBEXTFUNC: | |
963 | case C_EXT: | |
964 | { | |
965 | /* Record it in the minimal symbols regardless of | |
966 | SDB_TYPE. This parallels what we do for other debug | |
967 | formats, and probably is needed to make | |
968 | print_address_symbolic work right without the (now | |
969 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 970 | |
c5aa993b JM |
971 | enum minimal_symbol_type ms_type; |
972 | int sec; | |
2273f0ac | 973 | CORE_ADDR offset = 0; |
c906108c | 974 | |
c5aa993b JM |
975 | if (cs->c_secnum == N_UNDEF) |
976 | { | |
d4862372 JB |
977 | /* This is a common symbol. We used to rely on |
978 | the target to tell us whether it knows where | |
979 | the symbol has been relocated to, but none of | |
980 | the target implementations actually provided | |
981 | that operation. So we just ignore the symbol, | |
982 | the same way we would do if we had a target-side | |
983 | symbol lookup which returned no match. */ | |
984 | break; | |
c5aa993b | 985 | } |
182d43bc EZ |
986 | else if (cs->c_secnum == N_ABS) |
987 | { | |
988 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 989 | relocate) for absolute values. */ |
182d43bc EZ |
990 | ms_type = mst_abs; |
991 | sec = cs_to_section (cs, objfile); | |
992 | tmpaddr = cs->c_value; | |
993 | } | |
c5aa993b JM |
994 | else |
995 | { | |
05cfdb42 | 996 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 997 | |
c5aa993b JM |
998 | sec = cs_to_section (cs, objfile); |
999 | tmpaddr = cs->c_value; | |
aff410f1 | 1000 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
1001 | if (cs->c_sclass == C_EXT |
1002 | || cs->c_sclass == C_THUMBEXTFUNC | |
1003 | || cs->c_sclass == C_THUMBEXT | |
1004 | || (pe_file && (cs->c_sclass == C_STAT))) | |
2273f0ac | 1005 | offset = ANOFFSET (objfile->section_offsets, sec); |
c906108c | 1006 | |
05cfdb42 | 1007 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 1008 | { |
c5aa993b JM |
1009 | ms_type = |
1010 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
1011 | || cs->c_sclass == C_THUMBEXT ? | |
1012 | mst_text : mst_file_text; | |
85ddcc70 | 1013 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 1014 | } |
05cfdb42 DJ |
1015 | else if (bfd_section->flags & SEC_ALLOC |
1016 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1017 | { |
c5aa993b | 1018 | ms_type = |
aff410f1 MS |
1019 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1020 | ? mst_data : mst_file_data; | |
34e924c0 | 1021 | } |
05cfdb42 | 1022 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1023 | { |
c5aa993b | 1024 | ms_type = |
aff410f1 MS |
1025 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1026 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1027 | } |
1028 | else | |
1029 | ms_type = mst_unknown; | |
c5aa993b | 1030 | } |
c906108c | 1031 | |
aff410f1 MS |
1032 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, |
1033 | sec, objfile); | |
05cfdb42 | 1034 | if (msym) |
aff410f1 MS |
1035 | gdbarch_coff_make_msymbol_special (gdbarch, |
1036 | cs->c_sclass, msym); | |
fbcebcb1 | 1037 | |
c5aa993b JM |
1038 | if (SDB_TYPE (cs->c_type)) |
1039 | { | |
1040 | struct symbol *sym; | |
c5504eaf | 1041 | |
c5aa993b | 1042 | sym = process_coff_symbol |
96baa820 | 1043 | (cs, &main_aux, objfile); |
2273f0ac | 1044 | SYMBOL_VALUE (sym) = tmpaddr + offset; |
c5aa993b JM |
1045 | SYMBOL_SECTION (sym) = sec; |
1046 | } | |
1047 | } | |
1048 | break; | |
1049 | ||
1050 | case C_FCN: | |
7ecb6532 | 1051 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1052 | { |
1053 | within_function = 1; | |
1054 | ||
aff410f1 MS |
1055 | /* Value contains address of first non-init type |
1056 | code. */ | |
c5aa993b | 1057 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1058 | contains line number of '{' }. */ |
c5aa993b | 1059 | if (cs->c_naux != 1) |
23136709 | 1060 | complaint (&symfile_complaints, |
aff410f1 MS |
1061 | _("`.bf' symbol %d has no aux entry"), |
1062 | cs->c_symnum); | |
c5aa993b JM |
1063 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1064 | fcn_first_line_addr = cs->c_value; | |
1065 | ||
1066 | /* Might want to check that locals are 0 and | |
1067 | context_stack_depth is zero, and complain if not. */ | |
1068 | ||
1069 | depth = 0; | |
fe978cb0 | 1070 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1071 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1072 | newobj->name = |
aff410f1 MS |
1073 | process_coff_symbol (&fcn_cs_saved, |
1074 | &fcn_aux_saved, objfile); | |
c5aa993b | 1075 | } |
7ecb6532 | 1076 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1077 | { |
b9179dbc | 1078 | if (!within_function) |
8a3fe4f8 | 1079 | error (_("Bad coff function information.")); |
aff410f1 | 1080 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1081 | not useful for gdb. */ |
1082 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1083 | contains number of lines to '}' */ | |
1084 | ||
1085 | if (context_stack_depth <= 0) | |
aff410f1 | 1086 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1087 | complaint (&symfile_complaints, |
3e43a32a MS |
1088 | _("`.ef' symbol without matching `.bf' " |
1089 | "symbol ignored starting at symnum %d"), | |
23136709 | 1090 | cs->c_symnum); |
c5aa993b JM |
1091 | within_function = 0; |
1092 | break; | |
c906108c | 1093 | } |
c5aa993b | 1094 | |
fe978cb0 | 1095 | newobj = pop_context (); |
c5aa993b | 1096 | /* Stack must be empty now. */ |
fe978cb0 | 1097 | if (context_stack_depth > 0 || newobj == NULL) |
c906108c | 1098 | { |
23136709 | 1099 | complaint (&symfile_complaints, |
3e43a32a MS |
1100 | _("Unmatched .ef symbol(s) ignored " |
1101 | "starting at symnum %d"), | |
23136709 | 1102 | cs->c_symnum); |
c5aa993b JM |
1103 | within_function = 0; |
1104 | break; | |
c906108c | 1105 | } |
c5aa993b JM |
1106 | if (cs->c_naux != 1) |
1107 | { | |
23136709 | 1108 | complaint (&symfile_complaints, |
aff410f1 MS |
1109 | _("`.ef' symbol %d has no aux entry"), |
1110 | cs->c_symnum); | |
c5aa993b JM |
1111 | fcn_last_line = 0x7FFFFFFF; |
1112 | } | |
1113 | else | |
1114 | { | |
1115 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1116 | } | |
1117 | /* fcn_first_line is the line number of the opening '{'. | |
1118 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1119 | of the line number of the first statement of the |
1120 | function - except for one-line functions, for which | |
1121 | it is also the line number of all the statements and | |
1122 | of the closing '}', and for which we do not have any | |
1123 | other statement-line-number. */ | |
c5aa993b JM |
1124 | if (fcn_last_line == 1) |
1125 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1126 | gdbarch_addr_bits_remove (gdbarch, |
1127 | fcn_first_line_addr)); | |
c5aa993b | 1128 | else |
aff410f1 MS |
1129 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1130 | fcn_last_line, objfile); | |
c906108c | 1131 | |
fe978cb0 PA |
1132 | finish_block (newobj->name, &local_symbols, |
1133 | newobj->old_blocks, newobj->start_addr, | |
c5aa993b JM |
1134 | fcn_cs_saved.c_value |
1135 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 | 1136 | + ANOFFSET (objfile->section_offsets, |
4d663531 | 1137 | SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1138 | within_function = 0; |
1139 | } | |
1140 | break; | |
c906108c | 1141 | |
c5aa993b | 1142 | case C_BLOCK: |
7ecb6532 | 1143 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1144 | { |
1145 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1146 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1147 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1148 | push_context (++depth, tmpaddr); |
1149 | } | |
7ecb6532 | 1150 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1151 | { |
1152 | if (context_stack_depth <= 0) | |
0963b4bd | 1153 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1154 | complaint (&symfile_complaints, |
3e43a32a MS |
1155 | _("`.eb' symbol without matching `.bb' " |
1156 | "symbol ignored starting at symnum %d"), | |
23136709 | 1157 | cs->c_symnum); |
c5aa993b JM |
1158 | break; |
1159 | } | |
c906108c | 1160 | |
fe978cb0 PA |
1161 | newobj = pop_context (); |
1162 | if (depth-- != newobj->depth) | |
c5aa993b | 1163 | { |
3e43a32a MS |
1164 | complaint (&symfile_complaints, |
1165 | _("Mismatched .eb symbol ignored " | |
1166 | "starting at symnum %d"), | |
23136709 | 1167 | symnum); |
c5aa993b JM |
1168 | break; |
1169 | } | |
1170 | if (local_symbols && context_stack_depth > 0) | |
1171 | { | |
1172 | tmpaddr = | |
aff410f1 MS |
1173 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1174 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1175 | /* Make a block for the local symbols within. */ |
fe978cb0 PA |
1176 | finish_block (0, &local_symbols, newobj->old_blocks, |
1177 | newobj->start_addr, tmpaddr); | |
c5aa993b JM |
1178 | } |
1179 | /* Now pop locals of block just finished. */ | |
fe978cb0 | 1180 | local_symbols = newobj->locals; |
c5aa993b JM |
1181 | } |
1182 | break; | |
c906108c | 1183 | |
c5aa993b | 1184 | default: |
96baa820 | 1185 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1186 | break; |
c906108c SS |
1187 | } |
1188 | } | |
1189 | ||
1b6bc7e0 CF |
1190 | if ((nsyms == 0) && (pe_file)) |
1191 | { | |
c2f20dd6 | 1192 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1193 | executable, so try to read the export table. */ |
1b6bc7e0 CF |
1194 | read_pe_exported_syms (objfile); |
1195 | } | |
1196 | ||
46212e0b | 1197 | if (get_last_source_file ()) |
c906108c SS |
1198 | coff_end_symtab (objfile); |
1199 | ||
1200 | /* Patch up any opaque types (references to types that are not defined | |
1201 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 DE |
1202 | { |
1203 | struct compunit_symtab *cu; | |
1204 | struct symtab *s; | |
1205 | ||
1206 | ALL_OBJFILE_FILETABS (objfile, cu, s) | |
1207 | patch_opaque_types (s); | |
1208 | } | |
c906108c | 1209 | |
dd707e8e | 1210 | coffread_objfile = NULL; |
c906108c SS |
1211 | } |
1212 | \f | |
1213 | /* Routines for reading headers and symbols from executable. */ | |
1214 | ||
aff410f1 MS |
1215 | /* Read the next symbol, swap it, and return it in both |
1216 | internal_syment form, and coff_symbol form. Also return its first | |
1217 | auxent, if any, in internal_auxent form, and skip any other | |
1218 | auxents. */ | |
c906108c SS |
1219 | |
1220 | static void | |
aa1ee363 AC |
1221 | read_one_sym (struct coff_symbol *cs, |
1222 | struct internal_syment *sym, | |
1223 | union internal_auxent *aux) | |
c906108c SS |
1224 | { |
1225 | int i; | |
3b016d57 | 1226 | bfd_size_type bytes; |
c906108c SS |
1227 | |
1228 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1229 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1230 | if (bytes != local_symesz) | |
4262abfb | 1231 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1232 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1233 | cs->c_naux = sym->n_numaux & 0xff; |
1234 | if (cs->c_naux >= 1) | |
1235 | { | |
3b016d57 DJ |
1236 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1237 | if (bytes != local_auxesz) | |
4262abfb | 1238 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1239 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1240 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1241 | 0, cs->c_naux, (char *) aux); |
1242 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1243 | is important). */ |
c5aa993b | 1244 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1245 | { |
1246 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1247 | if (bytes != local_auxesz) | |
4262abfb JK |
1248 | error (_("%s: error reading symbols"), |
1249 | objfile_name (coffread_objfile)); | |
3b016d57 | 1250 | } |
c906108c SS |
1251 | } |
1252 | cs->c_name = getsymname (sym); | |
1253 | cs->c_value = sym->n_value; | |
1254 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1255 | cs->c_secnum = sym->n_scnum; | |
1256 | cs->c_type = (unsigned) sym->n_type; | |
1257 | if (!SDB_TYPE (cs->c_type)) | |
1258 | cs->c_type = 0; | |
1259 | ||
1260 | #if 0 | |
1261 | if (cs->c_sclass & 128) | |
3d263c1d | 1262 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1263 | #endif |
1264 | ||
1265 | symnum += 1 + cs->c_naux; | |
1266 | ||
1267 | /* The PE file format stores symbol values as offsets within the | |
1268 | section, rather than as absolute addresses. We correct that | |
1269 | here, if the symbol has an appropriate storage class. FIXME: We | |
1270 | should use BFD to read the symbols, rather than duplicating the | |
1271 | work here. */ | |
1272 | if (pe_file) | |
1273 | { | |
1274 | switch (cs->c_sclass) | |
1275 | { | |
1276 | case C_EXT: | |
1277 | case C_THUMBEXT: | |
1278 | case C_THUMBEXTFUNC: | |
1279 | case C_SECTION: | |
1280 | case C_NT_WEAK: | |
1281 | case C_STAT: | |
1282 | case C_THUMBSTAT: | |
1283 | case C_THUMBSTATFUNC: | |
1284 | case C_LABEL: | |
1285 | case C_THUMBLABEL: | |
1286 | case C_BLOCK: | |
1287 | case C_FCN: | |
1288 | case C_EFCN: | |
1289 | if (cs->c_secnum != 0) | |
1290 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1291 | break; | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | \f | |
aff410f1 | 1296 | /* Support for string table handling. */ |
c906108c SS |
1297 | |
1298 | static char *stringtab = NULL; | |
1299 | ||
1300 | static int | |
fba45db2 | 1301 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1302 | { |
1303 | long length; | |
1304 | int val; | |
1305 | unsigned char lengthbuf[4]; | |
1306 | ||
1307 | free_stringtab (); | |
1308 | ||
1309 | /* If the file is stripped, the offset might be zero, indicating no | |
aff410f1 | 1310 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1311 | if (offset == 0) |
1312 | return 0; | |
1313 | ||
1314 | if (bfd_seek (abfd, offset, 0) < 0) | |
1315 | return -1; | |
1316 | ||
3a42e9d0 | 1317 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1318 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1319 | |
c906108c | 1320 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1321 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1322 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1323 | return 0; | |
1324 | ||
1325 | stringtab = (char *) xmalloc (length); | |
aff410f1 MS |
1326 | /* This is in target format (probably not very useful, and not |
1327 | currently used), not host format. */ | |
c906108c | 1328 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1329 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1330 | return 0; |
1331 | ||
aff410f1 MS |
1332 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1333 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1334 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1335 | return -1; | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static void | |
fba45db2 | 1341 | free_stringtab (void) |
c906108c SS |
1342 | { |
1343 | if (stringtab) | |
b8c9b27d | 1344 | xfree (stringtab); |
c906108c SS |
1345 | stringtab = NULL; |
1346 | } | |
1347 | ||
74b7792f AC |
1348 | static void |
1349 | free_stringtab_cleanup (void *ignore) | |
1350 | { | |
1351 | free_stringtab (); | |
1352 | } | |
1353 | ||
c906108c | 1354 | static char * |
fba45db2 | 1355 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1356 | { |
c5aa993b | 1357 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1358 | char *result; |
1359 | ||
1360 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1361 | { | |
1362 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1363 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1364 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1365 | } | |
1366 | else | |
1367 | { | |
1368 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1369 | buffer[SYMNMLEN] = '\0'; | |
1370 | result = buffer; | |
1371 | } | |
1372 | return result; | |
1373 | } | |
1374 | ||
aff410f1 MS |
1375 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1376 | Return only the last component of the name. Result is in static | |
1377 | storage and is only good for temporary use. */ | |
c906108c | 1378 | |
9f37bbcc | 1379 | static const char * |
fba45db2 | 1380 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1381 | { |
1382 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1383 | const char *result; |
c906108c SS |
1384 | |
1385 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1386 | { |
1387 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1388 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1389 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1390 | } | |
c906108c SS |
1391 | else |
1392 | { | |
1393 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1394 | buffer[FILNMLEN] = '\0'; | |
1395 | } | |
1396 | result = buffer; | |
1397 | ||
1398 | /* FIXME: We should not be throwing away the information about what | |
1399 | directory. It should go into dirname of the symtab, or some such | |
1400 | place. */ | |
9f37bbcc | 1401 | result = lbasename (result); |
c906108c SS |
1402 | return (result); |
1403 | } | |
1404 | \f | |
1405 | /* Support for line number handling. */ | |
1406 | ||
1407 | static char *linetab = NULL; | |
1408 | static long linetab_offset; | |
1409 | static unsigned long linetab_size; | |
1410 | ||
1411 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1412 | external (unswapped) format in memory; we'll swap them as we enter | |
1413 | them into GDB's data structures. */ | |
c5aa993b | 1414 | |
c906108c | 1415 | static int |
fba45db2 | 1416 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1417 | { |
1418 | int val; | |
1419 | ||
1420 | linetab_offset = offset; | |
1421 | linetab_size = size; | |
1422 | ||
c5aa993b | 1423 | free_linetab (); |
c906108c SS |
1424 | |
1425 | if (size == 0) | |
1426 | return 0; | |
1427 | ||
1428 | if (bfd_seek (abfd, offset, 0) < 0) | |
1429 | return -1; | |
c5aa993b | 1430 | |
aff410f1 | 1431 | /* Allocate the desired table, plus a sentinel. */ |
c906108c SS |
1432 | linetab = (char *) xmalloc (size + local_linesz); |
1433 | ||
3a42e9d0 | 1434 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1435 | if (val != size) |
1436 | return -1; | |
1437 | ||
aff410f1 | 1438 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1439 | memset (linetab + size, 0, local_linesz); |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | static void | |
fba45db2 | 1445 | free_linetab (void) |
c906108c SS |
1446 | { |
1447 | if (linetab) | |
b8c9b27d | 1448 | xfree (linetab); |
c906108c SS |
1449 | linetab = NULL; |
1450 | } | |
1451 | ||
74b7792f AC |
1452 | static void |
1453 | free_linetab_cleanup (void *ignore) | |
1454 | { | |
1455 | free_linetab (); | |
1456 | } | |
1457 | ||
c906108c SS |
1458 | #if !defined (L_LNNO32) |
1459 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1460 | #endif | |
1461 | ||
1462 | static void | |
aa1ee363 AC |
1463 | enter_linenos (long file_offset, int first_line, |
1464 | int last_line, struct objfile *objfile) | |
c906108c | 1465 | { |
fbf65064 | 1466 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1467 | char *rawptr; |
c906108c SS |
1468 | struct internal_lineno lptr; |
1469 | ||
1470 | if (!linetab) | |
c5aa993b | 1471 | return; |
c906108c SS |
1472 | if (file_offset < linetab_offset) |
1473 | { | |
23136709 | 1474 | complaint (&symfile_complaints, |
3d263c1d | 1475 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1476 | file_offset); |
aff410f1 | 1477 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1478 | return; |
aff410f1 MS |
1479 | file_offset += linetab_offset; /* Try reading at that linetab |
1480 | offset. */ | |
c906108c | 1481 | } |
c5aa993b | 1482 | |
c906108c SS |
1483 | rawptr = &linetab[file_offset - linetab_offset]; |
1484 | ||
aff410f1 | 1485 | /* Skip first line entry for each function. */ |
c906108c | 1486 | rawptr += local_linesz; |
aff410f1 | 1487 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1488 | first_line--; |
1489 | ||
e6a8a7d2 EZ |
1490 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1491 | info), the next function's L_LNNO32 might not be zero, so don't | |
1492 | overstep the table's end in any case. */ | |
1493 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1494 | { |
1495 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1496 | rawptr += local_linesz; | |
e6a8a7d2 | 1497 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1498 | we exit. */ |
c5aa993b | 1499 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1500 | { |
1501 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1502 | addr += ANOFFSET (objfile->section_offsets, |
1503 | SECT_OFF_TEXT (objfile)); | |
1504 | record_line (current_subfile, | |
1505 | first_line + L_LNNO32 (&lptr), | |
fbf65064 UW |
1506 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1507 | } | |
c5aa993b JM |
1508 | else |
1509 | break; | |
1510 | } | |
c906108c SS |
1511 | } |
1512 | \f | |
1513 | static void | |
fba45db2 | 1514 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1515 | { |
52f0bd74 AC |
1516 | struct type *target = TYPE_TARGET_TYPE (type); |
1517 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1518 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1519 | ||
1520 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1521 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1522 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1523 | field_size); | |
c906108c | 1524 | |
aff410f1 MS |
1525 | memcpy (TYPE_FIELDS (target), |
1526 | TYPE_FIELDS (real_target), | |
1527 | field_size); | |
c906108c SS |
1528 | |
1529 | if (TYPE_NAME (real_target)) | |
1530 | { | |
0d5cff50 DE |
1531 | /* The previous copy of TYPE_NAME is allocated by |
1532 | process_coff_symbol. */ | |
c906108c | 1533 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1534 | xfree ((char*) TYPE_NAME (target)); |
1535 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1536 | } |
1537 | } | |
1538 | ||
1539 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1540 | so that they can be used to print out opaque data structures |
1541 | properly. */ | |
c906108c SS |
1542 | |
1543 | static void | |
fba45db2 | 1544 | patch_opaque_types (struct symtab *s) |
c906108c | 1545 | { |
52f0bd74 | 1546 | struct block *b; |
8157b174 | 1547 | struct block_iterator iter; |
52f0bd74 | 1548 | struct symbol *real_sym; |
c5aa993b | 1549 | |
aff410f1 | 1550 | /* Go through the per-file symbols only. */ |
439247b6 | 1551 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1552 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1553 | { |
1554 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1555 | Remove syms from the chain when their types are stored, |
1556 | but search the whole chain, as there may be several syms | |
1557 | from different files with the same name. */ | |
5aafa1cc PM |
1558 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1559 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1560 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1561 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1562 | { |
0d5cff50 | 1563 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1564 | int hash = hashname (name); |
1565 | struct symbol *sym, *prev; | |
c5aa993b | 1566 | |
c906108c SS |
1567 | prev = 0; |
1568 | for (sym = opaque_type_chain[hash]; sym;) | |
1569 | { | |
5aafa1cc PM |
1570 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1571 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1572 | { |
1573 | if (prev) | |
1574 | { | |
1575 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1576 | } | |
1577 | else | |
1578 | { | |
1579 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1580 | } | |
c5aa993b | 1581 | |
c906108c | 1582 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1583 | |
c906108c SS |
1584 | if (prev) |
1585 | { | |
1586 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1587 | } | |
1588 | else | |
1589 | { | |
1590 | sym = opaque_type_chain[hash]; | |
1591 | } | |
1592 | } | |
1593 | else | |
1594 | { | |
1595 | prev = sym; | |
1596 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | } | |
1601 | } | |
1602 | \f | |
768a979c UW |
1603 | static int |
1604 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1605 | { | |
1606 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1607 | } | |
1608 | ||
1609 | static const struct symbol_register_ops coff_register_funcs = { | |
1610 | coff_reg_to_regnum | |
1611 | }; | |
1612 | ||
f1e6e072 TT |
1613 | /* The "aclass" index for computed COFF symbols. */ |
1614 | ||
1615 | static int coff_register_index; | |
1616 | ||
c906108c | 1617 | static struct symbol * |
aa1ee363 AC |
1618 | process_coff_symbol (struct coff_symbol *cs, |
1619 | union internal_auxent *aux, | |
fba45db2 | 1620 | struct objfile *objfile) |
c906108c | 1621 | { |
e623cf5d | 1622 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1623 | char *name; |
1624 | ||
c906108c SS |
1625 | name = cs->c_name; |
1626 | name = EXTERNAL_NAME (name, objfile->obfd); | |
f85f34ed TT |
1627 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
1628 | &objfile->objfile_obstack); | |
04a679b8 | 1629 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1630 | |
1631 | /* default assumptions */ | |
1632 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1633 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1634 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1635 | ||
1636 | if (ISFCN (cs->c_type)) | |
1637 | { | |
aff410f1 MS |
1638 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1639 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1640 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1641 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1642 | aux, objfile)); | |
c906108c | 1643 | |
f1e6e072 | 1644 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1645 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1646 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1647 | add_symbol_to_list (sym, &file_symbols); | |
1648 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1649 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1650 | add_symbol_to_list (sym, &global_symbols); | |
1651 | } | |
1652 | else | |
1653 | { | |
5e2b427d | 1654 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1655 | switch (cs->c_sclass) |
1656 | { | |
c5aa993b JM |
1657 | case C_NULL: |
1658 | break; | |
c906108c | 1659 | |
c5aa993b | 1660 | case C_AUTO: |
f1e6e072 | 1661 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c5aa993b JM |
1662 | add_symbol_to_list (sym, &local_symbols); |
1663 | break; | |
c906108c | 1664 | |
c5aa993b JM |
1665 | case C_THUMBEXT: |
1666 | case C_THUMBEXTFUNC: | |
1667 | case C_EXT: | |
f1e6e072 | 1668 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1669 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1670 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1671 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1672 | add_symbol_to_list (sym, &global_symbols); |
1673 | break; | |
c906108c | 1674 | |
c5aa993b JM |
1675 | case C_THUMBSTAT: |
1676 | case C_THUMBSTATFUNC: | |
1677 | case C_STAT: | |
f1e6e072 | 1678 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1679 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1680 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1681 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1682 | if (within_function) |
1683 | { | |
aff410f1 | 1684 | /* Static symbol of local scope. */ |
c906108c SS |
1685 | add_symbol_to_list (sym, &local_symbols); |
1686 | } | |
c5aa993b JM |
1687 | else |
1688 | { | |
aff410f1 | 1689 | /* Static symbol at top level of file. */ |
c906108c SS |
1690 | add_symbol_to_list (sym, &file_symbols); |
1691 | } | |
c5aa993b | 1692 | break; |
c906108c SS |
1693 | |
1694 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1695 | case C_GLBLREG: |
c906108c | 1696 | #endif |
c5aa993b | 1697 | case C_REG: |
f1e6e072 | 1698 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1699 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b JM |
1700 | add_symbol_to_list (sym, &local_symbols); |
1701 | break; | |
c906108c | 1702 | |
c5aa993b JM |
1703 | case C_THUMBLABEL: |
1704 | case C_LABEL: | |
1705 | break; | |
c906108c | 1706 | |
c5aa993b | 1707 | case C_ARG: |
f1e6e072 | 1708 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1709 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1710 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1711 | break; |
c906108c | 1712 | |
c5aa993b | 1713 | case C_REGPARM: |
f1e6e072 | 1714 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1715 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1716 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1717 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1718 | break; |
c906108c | 1719 | |
c5aa993b | 1720 | case C_TPDEF: |
f1e6e072 | 1721 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1722 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1723 | |
0963b4bd | 1724 | /* If type has no name, give it one. */ |
c5aa993b JM |
1725 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1726 | { | |
1727 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1728 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1729 | { | |
aff410f1 MS |
1730 | /* If we are giving a name to a type such as |
1731 | "pointer to foo" or "function returning foo", we | |
1732 | better not set the TYPE_NAME. If the program | |
1733 | contains "typedef char *caddr_t;", we don't want | |
1734 | all variables of type char * to print as caddr_t. | |
1735 | This is not just a consequence of GDB's type | |
1736 | management; CC and GCC (at least through version | |
1737 | 2.4) both output variables of either type char * | |
1738 | or caddr_t with the type refering to the C_TPDEF | |
1739 | symbol for caddr_t. If a future compiler cleans | |
1740 | this up it GDB is not ready for it yet, but if it | |
1741 | becomes ready we somehow need to disable this | |
1742 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1743 | |
1744 | Sigh. | |
1745 | ||
1746 | Fortunately, this check seems not to be necessary | |
1747 | for anything except pointers or functions. */ | |
1748 | ; | |
1749 | } | |
1750 | else | |
1751 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1752 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1753 | } |
c906108c | 1754 | |
aff410f1 MS |
1755 | /* Keep track of any type which points to empty structured |
1756 | type, so it can be filled from a definition from another | |
1757 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1758 | not an empty structured type, though; the forward | |
1759 | references work themselves out via the magic of | |
1760 | coff_lookup_type. */ | |
5aafa1cc PM |
1761 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1762 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1763 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1764 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1765 | { |
3567439c | 1766 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1767 | |
c5aa993b JM |
1768 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1769 | opaque_type_chain[i] = sym; | |
1770 | } | |
1771 | add_symbol_to_list (sym, &file_symbols); | |
1772 | break; | |
c906108c | 1773 | |
c5aa993b JM |
1774 | case C_STRTAG: |
1775 | case C_UNTAG: | |
1776 | case C_ENTAG: | |
f1e6e072 | 1777 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1778 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1779 | |
1780 | /* Some compilers try to be helpful by inventing "fake" | |
1781 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1782 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
c5aa993b | 1783 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1784 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1785 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1786 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1787 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1788 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1789 | |
1790 | add_symbol_to_list (sym, &file_symbols); | |
1791 | break; | |
c906108c | 1792 | |
c5aa993b JM |
1793 | default: |
1794 | break; | |
c906108c SS |
1795 | } |
1796 | } | |
1797 | return sym; | |
1798 | } | |
1799 | \f | |
1800 | /* Decode a coff type specifier; return the type that is meant. */ | |
1801 | ||
1802 | static struct type * | |
aa1ee363 | 1803 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1804 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1805 | { |
52f0bd74 | 1806 | struct type *type = 0; |
c906108c SS |
1807 | unsigned int new_c_type; |
1808 | ||
1809 | if (c_type & ~N_BTMASK) | |
1810 | { | |
1811 | new_c_type = DECREF (c_type); | |
1812 | if (ISPTR (c_type)) | |
1813 | { | |
5e2b427d | 1814 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1815 | type = lookup_pointer_type (type); |
1816 | } | |
1817 | else if (ISFCN (c_type)) | |
1818 | { | |
5e2b427d | 1819 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1820 | type = lookup_function_type (type); |
1821 | } | |
1822 | else if (ISARY (c_type)) | |
1823 | { | |
1824 | int i, n; | |
aa1ee363 | 1825 | unsigned short *dim; |
c906108c SS |
1826 | struct type *base_type, *index_type, *range_type; |
1827 | ||
1828 | /* Define an array type. */ | |
aff410f1 | 1829 | /* auxent refers to array, not base type. */ |
c906108c SS |
1830 | if (aux->x_sym.x_tagndx.l == 0) |
1831 | cs->c_naux = 0; | |
1832 | ||
aff410f1 | 1833 | /* Shift the indices down. */ |
c906108c SS |
1834 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1835 | i = 1; | |
1836 | n = dim[0]; | |
1837 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1838 | *dim = *(dim + 1); | |
1839 | *dim = 0; | |
1840 | ||
5e2b427d | 1841 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1842 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 SA |
1843 | range_type |
1844 | = create_static_range_type ((struct type *) NULL, | |
1845 | index_type, 0, n - 1); | |
c906108c | 1846 | type = |
aff410f1 MS |
1847 | create_array_type ((struct type *) NULL, |
1848 | base_type, range_type); | |
c906108c SS |
1849 | } |
1850 | return type; | |
1851 | } | |
1852 | ||
aff410f1 MS |
1853 | /* Reference to existing type. This only occurs with the struct, |
1854 | union, and enum types. EPI a29k coff fakes us out by producing | |
1855 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1856 | unions, and enums, so we have to check the c_sclass field. SCO | |
1857 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1858 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1859 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1860 | { | |
1861 | if (cs->c_sclass != C_STRTAG | |
1862 | && cs->c_sclass != C_UNTAG | |
1863 | && cs->c_sclass != C_ENTAG | |
1864 | && aux->x_sym.x_tagndx.l >= 0) | |
1865 | { | |
1866 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1867 | return type; | |
1868 | } | |
1869 | else | |
1870 | { | |
23136709 | 1871 | complaint (&symfile_complaints, |
3d263c1d | 1872 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1873 | cs->c_name); |
aff410f1 | 1874 | /* And fall through to decode_base_type... */ |
c906108c SS |
1875 | } |
1876 | } | |
1877 | ||
5e2b427d | 1878 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1879 | } |
1880 | ||
1881 | /* Decode a coff type specifier for function definition; | |
1882 | return the type that the function returns. */ | |
1883 | ||
1884 | static struct type * | |
aff410f1 MS |
1885 | decode_function_type (struct coff_symbol *cs, |
1886 | unsigned int c_type, | |
1887 | union internal_auxent *aux, | |
1888 | struct objfile *objfile) | |
c906108c SS |
1889 | { |
1890 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1891 | cs->c_naux = 0; /* auxent refers to function, not base |
1892 | type. */ | |
c906108c | 1893 | |
5e2b427d | 1894 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1895 | } |
1896 | \f | |
aff410f1 | 1897 | /* Basic C types. */ |
c906108c SS |
1898 | |
1899 | static struct type * | |
aff410f1 MS |
1900 | decode_base_type (struct coff_symbol *cs, |
1901 | unsigned int c_type, | |
1902 | union internal_auxent *aux, | |
1903 | struct objfile *objfile) | |
c906108c | 1904 | { |
5e2b427d | 1905 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1906 | struct type *type; |
1907 | ||
1908 | switch (c_type) | |
1909 | { | |
c5aa993b | 1910 | case T_NULL: |
aff410f1 | 1911 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1912 | return objfile_type (objfile)->builtin_void; |
c906108c | 1913 | |
c906108c | 1914 | #ifdef T_VOID |
c5aa993b JM |
1915 | case T_VOID: |
1916 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1917 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1918 | #endif |
1919 | ||
c5aa993b | 1920 | case T_CHAR: |
46bf5051 | 1921 | return objfile_type (objfile)->builtin_char; |
c906108c | 1922 | |
c5aa993b | 1923 | case T_SHORT: |
46bf5051 | 1924 | return objfile_type (objfile)->builtin_short; |
c906108c | 1925 | |
c5aa993b | 1926 | case T_INT: |
46bf5051 | 1927 | return objfile_type (objfile)->builtin_int; |
c906108c | 1928 | |
c5aa993b JM |
1929 | case T_LONG: |
1930 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1931 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1932 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1933 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1934 | else |
46bf5051 | 1935 | return objfile_type (objfile)->builtin_long; |
c906108c | 1936 | |
c5aa993b | 1937 | case T_FLOAT: |
46bf5051 | 1938 | return objfile_type (objfile)->builtin_float; |
c906108c | 1939 | |
c5aa993b | 1940 | case T_DOUBLE: |
46bf5051 | 1941 | return objfile_type (objfile)->builtin_double; |
c906108c | 1942 | |
c5aa993b | 1943 | case T_LNGDBL: |
46bf5051 | 1944 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1945 | |
c5aa993b JM |
1946 | case T_STRUCT: |
1947 | if (cs->c_naux != 1) | |
1948 | { | |
aff410f1 | 1949 | /* Anonymous structure type. */ |
c5aa993b JM |
1950 | type = coff_alloc_type (cs->c_symnum); |
1951 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1952 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1953 | /* This used to set the tag to "<opaque>". But I think |
1954 | setting it to NULL is right, and the printing code can | |
1955 | print it as "struct {...}". */ | |
c5aa993b JM |
1956 | TYPE_TAG_NAME (type) = NULL; |
1957 | INIT_CPLUS_SPECIFIC (type); | |
1958 | TYPE_LENGTH (type) = 0; | |
1959 | TYPE_FIELDS (type) = 0; | |
1960 | TYPE_NFIELDS (type) = 0; | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | type = coff_read_struct_type (cs->c_symnum, | |
1965 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1966 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1967 | objfile); | |
c5aa993b JM |
1968 | } |
1969 | return type; | |
c906108c | 1970 | |
c5aa993b JM |
1971 | case T_UNION: |
1972 | if (cs->c_naux != 1) | |
1973 | { | |
aff410f1 | 1974 | /* Anonymous union type. */ |
c5aa993b JM |
1975 | type = coff_alloc_type (cs->c_symnum); |
1976 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1977 | /* This used to set the tag to "<opaque>". But I think |
1978 | setting it to NULL is right, and the printing code can | |
1979 | print it as "union {...}". */ | |
c5aa993b JM |
1980 | TYPE_TAG_NAME (type) = NULL; |
1981 | INIT_CPLUS_SPECIFIC (type); | |
1982 | TYPE_LENGTH (type) = 0; | |
1983 | TYPE_FIELDS (type) = 0; | |
1984 | TYPE_NFIELDS (type) = 0; | |
1985 | } | |
1986 | else | |
1987 | { | |
1988 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1989 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1990 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1991 | objfile); | |
c5aa993b JM |
1992 | } |
1993 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1994 | return type; | |
c906108c | 1995 | |
c5aa993b JM |
1996 | case T_ENUM: |
1997 | if (cs->c_naux != 1) | |
1998 | { | |
aff410f1 | 1999 | /* Anonymous enum type. */ |
c5aa993b JM |
2000 | type = coff_alloc_type (cs->c_symnum); |
2001 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
2002 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
2003 | /* This used to set the tag to "<opaque>". But I think |
2004 | setting it to NULL is right, and the printing code can | |
2005 | print it as "enum {...}". */ | |
c5aa993b JM |
2006 | TYPE_TAG_NAME (type) = NULL; |
2007 | TYPE_LENGTH (type) = 0; | |
2008 | TYPE_FIELDS (type) = 0; | |
2009 | TYPE_NFIELDS (type) = 0; | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | type = coff_read_enum_type (cs->c_symnum, | |
2014 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
2015 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
2016 | objfile); | |
c5aa993b JM |
2017 | } |
2018 | return type; | |
2019 | ||
2020 | case T_MOE: | |
aff410f1 | 2021 | /* Shouldn't show up here. */ |
c5aa993b | 2022 | break; |
c906108c | 2023 | |
c5aa993b | 2024 | case T_UCHAR: |
46bf5051 | 2025 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 2026 | |
c5aa993b | 2027 | case T_USHORT: |
46bf5051 | 2028 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 2029 | |
c5aa993b | 2030 | case T_UINT: |
46bf5051 | 2031 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 2032 | |
c5aa993b JM |
2033 | case T_ULONG: |
2034 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 2035 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 2036 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 2037 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 2038 | else |
46bf5051 | 2039 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 2040 | } |
aff410f1 MS |
2041 | complaint (&symfile_complaints, |
2042 | _("Unexpected type for symbol %s"), cs->c_name); | |
46bf5051 | 2043 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
2044 | } |
2045 | \f | |
2046 | /* This page contains subroutines of read_type. */ | |
2047 | ||
2048 | /* Read the description of a structure (or union type) and return an | |
2049 | object describing the type. */ | |
2050 | ||
2051 | static struct type * | |
5e2b427d UW |
2052 | coff_read_struct_type (int index, int length, int lastsym, |
2053 | struct objfile *objfile) | |
c906108c SS |
2054 | { |
2055 | struct nextfield | |
2056 | { | |
2057 | struct nextfield *next; | |
2058 | struct field field; | |
2059 | }; | |
2060 | ||
52f0bd74 AC |
2061 | struct type *type; |
2062 | struct nextfield *list = 0; | |
fe978cb0 | 2063 | struct nextfield *newobj; |
c906108c | 2064 | int nfields = 0; |
52f0bd74 | 2065 | int n; |
c906108c SS |
2066 | char *name; |
2067 | struct coff_symbol member_sym; | |
52f0bd74 | 2068 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2069 | struct internal_syment sub_sym; |
2070 | union internal_auxent sub_aux; | |
2071 | int done = 0; | |
2072 | ||
2073 | type = coff_alloc_type (index); | |
2074 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2075 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2076 | TYPE_LENGTH (type) = length; |
2077 | ||
2078 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2079 | { | |
2080 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2081 | name = ms->c_name; | |
5e2b427d | 2082 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2083 | |
2084 | switch (ms->c_sclass) | |
2085 | { | |
c5aa993b JM |
2086 | case C_MOS: |
2087 | case C_MOU: | |
2088 | ||
2089 | /* Get space to record the next field's data. */ | |
fe978cb0 PA |
2090 | newobj = (struct nextfield *) alloca (sizeof (struct nextfield)); |
2091 | newobj->next = list; | |
2092 | list = newobj; | |
c5aa993b JM |
2093 | |
2094 | /* Save the data. */ | |
10f0c4bb TT |
2095 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
2096 | name, strlen (name)); | |
aff410f1 MS |
2097 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2098 | &sub_aux, objfile); | |
d6a843b5 | 2099 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2100 | FIELD_BITSIZE (list->field) = 0; |
2101 | nfields++; | |
2102 | break; | |
c906108c | 2103 | |
c5aa993b JM |
2104 | case C_FIELD: |
2105 | ||
2106 | /* Get space to record the next field's data. */ | |
fe978cb0 PA |
2107 | newobj = (struct nextfield *) alloca (sizeof (struct nextfield)); |
2108 | newobj->next = list; | |
2109 | list = newobj; | |
c5aa993b JM |
2110 | |
2111 | /* Save the data. */ | |
10f0c4bb TT |
2112 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
2113 | name, strlen (name)); | |
aff410f1 MS |
2114 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2115 | &sub_aux, objfile); | |
d6a843b5 | 2116 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2117 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2118 | nfields++; | |
2119 | break; | |
c906108c | 2120 | |
c5aa993b JM |
2121 | case C_EOS: |
2122 | done = 1; | |
2123 | break; | |
c906108c SS |
2124 | } |
2125 | } | |
2126 | /* Now create the vector of fields, and record how big it is. */ | |
2127 | ||
2128 | TYPE_NFIELDS (type) = nfields; | |
2129 | TYPE_FIELDS (type) = (struct field *) | |
2130 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2131 | ||
2132 | /* Copy the saved-up fields into the field vector. */ | |
2133 | ||
2134 | for (n = nfields; list; list = list->next) | |
2135 | TYPE_FIELD (type, --n) = list->field; | |
2136 | ||
2137 | return type; | |
2138 | } | |
2139 | \f | |
2140 | /* Read a definition of an enumeration type, | |
2141 | and create and return a suitable type object. | |
2142 | Also defines the symbols that represent the values of the type. */ | |
2143 | ||
c906108c | 2144 | static struct type * |
5e2b427d UW |
2145 | coff_read_enum_type (int index, int length, int lastsym, |
2146 | struct objfile *objfile) | |
c906108c | 2147 | { |
5e2b427d | 2148 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2149 | struct symbol *sym; |
2150 | struct type *type; | |
c906108c SS |
2151 | int nsyms = 0; |
2152 | int done = 0; | |
2153 | struct pending **symlist; | |
2154 | struct coff_symbol member_sym; | |
52f0bd74 | 2155 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2156 | struct internal_syment sub_sym; |
2157 | union internal_auxent sub_aux; | |
2158 | struct pending *osyms, *syms; | |
2159 | int o_nsyms; | |
52f0bd74 | 2160 | int n; |
c906108c SS |
2161 | char *name; |
2162 | int unsigned_enum = 1; | |
2163 | ||
2164 | type = coff_alloc_type (index); | |
2165 | if (within_function) | |
2166 | symlist = &local_symbols; | |
2167 | else | |
2168 | symlist = &file_symbols; | |
2169 | osyms = *symlist; | |
2170 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2171 | ||
2172 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2173 | { | |
2174 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2175 | name = ms->c_name; | |
5e2b427d | 2176 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2177 | |
2178 | switch (ms->c_sclass) | |
2179 | { | |
c5aa993b | 2180 | case C_MOE: |
e623cf5d | 2181 | sym = allocate_symbol (objfile); |
c5aa993b | 2182 | |
3567439c | 2183 | SYMBOL_SET_LINKAGE_NAME (sym, |
10f0c4bb TT |
2184 | obstack_copy0 (&objfile->objfile_obstack, |
2185 | name, strlen (name))); | |
f1e6e072 | 2186 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2187 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2188 | SYMBOL_VALUE (sym) = ms->c_value; |
2189 | add_symbol_to_list (sym, symlist); | |
2190 | nsyms++; | |
2191 | break; | |
c906108c | 2192 | |
c5aa993b JM |
2193 | case C_EOS: |
2194 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2195 | up the count of how many symbols to read. So stop | |
2196 | on .eos. */ | |
2197 | done = 1; | |
2198 | break; | |
c906108c SS |
2199 | } |
2200 | } | |
2201 | ||
2202 | /* Now fill in the fields of the type-structure. */ | |
2203 | ||
2204 | if (length > 0) | |
2205 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2206 | else /* Assume ints. */ |
5e2b427d | 2207 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2208 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2209 | TYPE_NFIELDS (type) = nsyms; | |
2210 | TYPE_FIELDS (type) = (struct field *) | |
2211 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2212 | ||
2213 | /* Find the symbols for the values and put them into the type. | |
2214 | The symbols can be found in the symlist that we put them on | |
2215 | to cause them to be defined. osyms contains the old value | |
2216 | of that symlist; everything up to there was defined by us. */ | |
2217 | /* Note that we preserve the order of the enum constants, so | |
2218 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2219 | FOO, not LAST_THING. */ | |
2220 | ||
2221 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2222 | { | |
2223 | int j = 0; | |
2224 | ||
2225 | if (syms == osyms) | |
2226 | j = o_nsyms; | |
c5aa993b | 2227 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2228 | { |
2229 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2230 | |
c906108c | 2231 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2232 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2233 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2234 | if (SYMBOL_VALUE (xsym) < 0) |
2235 | unsigned_enum = 0; | |
2236 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2237 | } | |
2238 | if (syms == osyms) | |
2239 | break; | |
2240 | } | |
2241 | ||
2242 | if (unsigned_enum) | |
876cecd0 | 2243 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2244 | |
2245 | return type; | |
2246 | } | |
2247 | ||
aff410f1 | 2248 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2249 | |
00b5771c | 2250 | static const struct sym_fns coff_sym_fns = |
c906108c | 2251 | { |
aff410f1 MS |
2252 | coff_new_init, /* sym_new_init: init anything gbl to |
2253 | entire symtab */ | |
2254 | coff_symfile_init, /* sym_init: read initial info, setup | |
2255 | for sym_read() */ | |
2256 | coff_symfile_read, /* sym_read: read a symbol file into | |
2257 | symtab */ | |
b11896a5 | 2258 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2259 | coff_symfile_finish, /* sym_finish: finished with file, |
2260 | cleanup */ | |
2261 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2262 | internal form */ | |
2263 | default_symfile_segments, /* sym_segments: Get segment | |
2264 | information from a file */ | |
c295b2e5 | 2265 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2266 | |
2267 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2268 | section. */ | |
55aa24fb | 2269 | NULL, /* sym_probe_fns */ |
00b5771c | 2270 | &psym_functions |
c906108c SS |
2271 | }; |
2272 | ||
b8b98ad1 TT |
2273 | /* Free the per-objfile COFF data. */ |
2274 | ||
2275 | static void | |
2276 | coff_free_info (struct objfile *objfile, void *arg) | |
2277 | { | |
2278 | xfree (arg); | |
2279 | } | |
2280 | ||
c906108c | 2281 | void |
fba45db2 | 2282 | _initialize_coffread (void) |
c906108c | 2283 | { |
c256e171 | 2284 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 TT |
2285 | |
2286 | coff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
2287 | coff_free_info); | |
f1e6e072 TT |
2288 | |
2289 | coff_register_index | |
2290 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2291 | } |