Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
e2882c85 | 2 | Copyright (C) 1987-2018 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 | 43 | #include "psymtab.h" |
c74f7d1c | 44 | #include "build-id.h" |
ccefe4c4 | 45 | |
b8b98ad1 TT |
46 | /* Key for COFF-associated data. */ |
47 | ||
48 | static const struct objfile_data *coff_objfile_data_key; | |
49 | ||
91a81f69 TT |
50 | /* The objfile we are currently reading. */ |
51 | ||
dd707e8e | 52 | static struct objfile *coffread_objfile; |
91a81f69 | 53 | |
c5aa993b JM |
54 | struct coff_symfile_info |
55 | { | |
aff410f1 MS |
56 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
57 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 58 | |
aff410f1 MS |
59 | CORE_ADDR textaddr; /* Addr of .text section. */ |
60 | unsigned int textsize; /* Size of .text section. */ | |
c5aa993b | 61 | struct stab_section_list *stabsects; /* .stab sections. */ |
aff410f1 | 62 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
63 | char *stabstrdata; |
64 | }; | |
c906108c SS |
65 | |
66 | /* Translate an external name string into a user-visible name. */ | |
67 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
68 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
69 | ? string + 1 : string) | |
c906108c SS |
70 | |
71 | /* To be an sdb debug type, type must have at least a basic or primary | |
72 | derived type. Using this rather than checking against T_NULL is | |
73 | said to prevent core dumps if we try to operate on Michael Bloom | |
74 | dbx-in-coff file. */ | |
75 | ||
76 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
77 | ||
c906108c SS |
78 | /* Core address of start and end of text of current source file. |
79 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
80 | ||
81 | static CORE_ADDR current_source_start_addr; | |
82 | static CORE_ADDR current_source_end_addr; | |
83 | ||
84 | /* The addresses of the symbol table stream and number of symbols | |
85 | of the object file we are reading (as copied into core). */ | |
86 | ||
87 | static bfd *nlist_bfd_global; | |
88 | static int nlist_nsyms_global; | |
89 | ||
c906108c | 90 | |
aff410f1 MS |
91 | /* Pointers to scratch storage, used for reading raw symbols and |
92 | auxents. */ | |
c906108c SS |
93 | |
94 | static char *temp_sym; | |
95 | static char *temp_aux; | |
96 | ||
97 | /* Local variables that hold the shift and mask values for the | |
98 | COFF file that we are currently reading. These come back to us | |
99 | from BFD, and are referenced by their macro names, as well as | |
100 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
101 | macros from include/coff/internal.h . */ | |
102 | ||
c5aa993b JM |
103 | static unsigned local_n_btmask; |
104 | static unsigned local_n_btshft; | |
105 | static unsigned local_n_tmask; | |
106 | static unsigned local_n_tshift; | |
c906108c SS |
107 | |
108 | #define N_BTMASK local_n_btmask | |
109 | #define N_BTSHFT local_n_btshft | |
110 | #define N_TMASK local_n_tmask | |
111 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 112 | |
aff410f1 MS |
113 | /* Local variables that hold the sizes in the file of various COFF |
114 | structures. (We only need to know this to read them from the file | |
115 | -- BFD will then translate the data in them, into `internal_xxx' | |
116 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 117 | |
c5aa993b JM |
118 | static unsigned local_linesz; |
119 | static unsigned local_symesz; | |
120 | static unsigned local_auxesz; | |
c906108c SS |
121 | |
122 | /* This is set if this is a PE format file. */ | |
123 | ||
124 | static int pe_file; | |
125 | ||
126 | /* Chain of typedefs of pointers to empty struct/union types. | |
127 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
128 | ||
129 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
130 | ||
aff410f1 | 131 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 132 | |
c5aa993b JM |
133 | struct coff_symbol |
134 | { | |
135 | char *c_name; | |
aff410f1 MS |
136 | int c_symnum; /* Symbol number of this entry. */ |
137 | int c_naux; /* 0 if syment only, 1 if syment + | |
138 | auxent, etc. */ | |
5e8db398 | 139 | CORE_ADDR c_value; |
c5aa993b JM |
140 | int c_sclass; |
141 | int c_secnum; | |
142 | unsigned int c_type; | |
143 | }; | |
c906108c | 144 | |
fc474241 DE |
145 | /* Vector of types defined so far, indexed by their type numbers. */ |
146 | ||
147 | static struct type **type_vector; | |
148 | ||
149 | /* Number of elements allocated for type_vector currently. */ | |
150 | ||
151 | static int type_vector_length; | |
152 | ||
153 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
154 | realloc'd down to the size actually used, when completed. */ | |
155 | ||
156 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
157 | ||
a14ed312 | 158 | extern void stabsread_clear_cache (void); |
7be570e7 | 159 | |
5e2b427d UW |
160 | static struct type *coff_read_struct_type (int, int, int, |
161 | struct objfile *); | |
c906108c | 162 | |
a14ed312 | 163 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
164 | unsigned int, |
165 | union internal_auxent *, | |
5e2b427d | 166 | struct objfile *); |
c906108c | 167 | |
a14ed312 | 168 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
169 | union internal_auxent *, |
170 | struct objfile *); | |
c906108c | 171 | |
a14ed312 KB |
172 | static struct type *decode_function_type (struct coff_symbol *, |
173 | unsigned int, | |
5e2b427d UW |
174 | union internal_auxent *, |
175 | struct objfile *); | |
c906108c | 176 | |
5e2b427d UW |
177 | static struct type *coff_read_enum_type (int, int, int, |
178 | struct objfile *); | |
c906108c | 179 | |
a14ed312 KB |
180 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
181 | union internal_auxent *, | |
182 | struct objfile *); | |
c906108c | 183 | |
a14ed312 | 184 | static void patch_opaque_types (struct symtab *); |
c906108c | 185 | |
a14ed312 | 186 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 187 | |
a14ed312 | 188 | static void free_linetab (void); |
c906108c | 189 | |
74b7792f AC |
190 | static void free_linetab_cleanup (void *ignore); |
191 | ||
a14ed312 | 192 | static int init_lineno (bfd *, long, int); |
c906108c | 193 | |
a14ed312 | 194 | static char *getsymname (struct internal_syment *); |
c906108c | 195 | |
9f37bbcc | 196 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 197 | |
a14ed312 | 198 | static void free_stringtab (void); |
c906108c | 199 | |
74b7792f AC |
200 | static void free_stringtab_cleanup (void *ignore); |
201 | ||
a14ed312 | 202 | static int init_stringtab (bfd *, long); |
c906108c | 203 | |
a14ed312 | 204 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
205 | struct internal_syment *, |
206 | union internal_auxent *); | |
c906108c | 207 | |
8dddcb8f TT |
208 | static void coff_symtab_read (minimal_symbol_reader &, |
209 | 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 | } | |
61012eef | 234 | else if (startswith (name, ".text")) |
c906108c SS |
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 | } | |
61012eef | 242 | else if (startswith (name, ".stab")) |
c906108c SS |
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 | ||
8d749320 | 255 | n = XNEW (struct stab_section_list); |
c906108c SS |
256 | n->section = sectp; |
257 | n->next = NULL; | |
258 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
259 | ; | |
260 | *pn = n; | |
261 | ||
262 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
263 | in coff_symfile_read, at which point we no longer need |
264 | the information. */ | |
b8c9b27d | 265 | make_cleanup (xfree, n); |
c906108c SS |
266 | } |
267 | } | |
268 | } | |
269 | ||
270 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 271 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 272 | |
c5aa993b JM |
273 | struct find_targ_sec_arg |
274 | { | |
275 | int targ_index; | |
276 | asection **resultp; | |
277 | }; | |
c906108c | 278 | |
c5aa993b | 279 | static void |
12b9c64f | 280 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 281 | { |
c5aa993b | 282 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 283 | |
c906108c SS |
284 | if (sect->target_index == args->targ_index) |
285 | *args->resultp = sect; | |
286 | } | |
287 | ||
fbcebcb1 DJ |
288 | /* Return the bfd_section that CS points to. */ |
289 | static struct bfd_section* | |
290 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
291 | { |
292 | asection *sect = NULL; | |
293 | struct find_targ_sec_arg args; | |
c906108c SS |
294 | |
295 | args.targ_index = cs->c_secnum; | |
296 | args.resultp = § | |
297 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
298 | return sect; |
299 | } | |
300 | ||
301 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
302 | static int | |
303 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
304 | { | |
305 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 306 | |
05cfdb42 DJ |
307 | if (sect == NULL) |
308 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 309 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
310 | } |
311 | ||
312 | /* Return the address of the section of a COFF symbol. */ | |
313 | ||
a14ed312 | 314 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
315 | |
316 | static CORE_ADDR | |
fba45db2 | 317 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
318 | { |
319 | asection *sect = NULL; | |
320 | struct find_targ_sec_arg args; | |
321 | CORE_ADDR addr = 0; | |
322 | ||
323 | args.targ_index = cs->c_secnum; | |
324 | args.resultp = § | |
325 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
326 | if (sect != NULL) | |
81b9b86e | 327 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
328 | return addr; |
329 | } | |
330 | ||
331 | /* Look up a coff type-number index. Return the address of the slot | |
332 | where the type for that index is stored. | |
333 | The type-number is in INDEX. | |
334 | ||
335 | This can be used for finding the type associated with that index | |
336 | or for associating a new type with the index. */ | |
337 | ||
338 | static struct type ** | |
aa1ee363 | 339 | coff_lookup_type (int index) |
c906108c SS |
340 | { |
341 | if (index >= type_vector_length) | |
342 | { | |
343 | int old_vector_length = type_vector_length; | |
344 | ||
345 | type_vector_length *= 2; | |
c5aa993b | 346 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
347 | type_vector_length = index * 2; |
348 | ||
349 | type_vector = (struct type **) | |
350 | xrealloc ((char *) type_vector, | |
351 | type_vector_length * sizeof (struct type *)); | |
352 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 353 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
354 | } |
355 | return &type_vector[index]; | |
356 | } | |
357 | ||
358 | /* Make sure there is a type allocated for type number index | |
359 | and return the type object. | |
360 | This can create an empty (zeroed) type object. */ | |
361 | ||
362 | static struct type * | |
fba45db2 | 363 | coff_alloc_type (int index) |
c906108c | 364 | { |
52f0bd74 AC |
365 | struct type **type_addr = coff_lookup_type (index); |
366 | struct type *type = *type_addr; | |
c906108c SS |
367 | |
368 | /* If we are referring to a type not known at all yet, | |
369 | allocate an empty type for it. | |
370 | We will fill it in later if we find out how. */ | |
371 | if (type == NULL) | |
372 | { | |
dd707e8e | 373 | type = alloc_type (coffread_objfile); |
c906108c SS |
374 | *type_addr = type; |
375 | } | |
376 | return type; | |
377 | } | |
378 | \f | |
c906108c SS |
379 | /* Start a new symtab for a new source file. |
380 | This is called when a COFF ".file" symbol is seen; | |
381 | it indicates the start of data for one original source file. */ | |
382 | ||
383 | static void | |
4d663531 | 384 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 385 | { |
4d663531 | 386 | start_symtab (objfile, |
aff410f1 MS |
387 | /* We fill in the filename later. start_symtab puts this pointer |
388 | into last_source_file and we put it in subfiles->name, which | |
389 | end_symtab frees; that's why it must be malloc'd. */ | |
1b36a34b | 390 | xstrdup (name), |
c5aa993b JM |
391 | /* We never know the directory name for COFF. */ |
392 | NULL, | |
393 | /* The start address is irrelevant, since we set | |
394 | last_source_start_addr in coff_end_symtab. */ | |
5ffa0793 PA |
395 | 0, |
396 | /* Let buildsym.c deduce the language for this symtab. */ | |
397 | language_unknown); | |
c906108c | 398 | record_debugformat ("COFF"); |
c906108c SS |
399 | } |
400 | ||
401 | /* Save the vital information from when starting to read a file, | |
402 | for use when closing off the current file. | |
aff410f1 MS |
403 | NAME is the file name the symbols came from, START_ADDR is the |
404 | first text address for the file, and SIZE is the number of bytes of | |
405 | text. */ | |
c906108c SS |
406 | |
407 | static void | |
9f37bbcc | 408 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 409 | { |
46212e0b | 410 | set_last_source_file (name); |
c906108c SS |
411 | current_source_start_addr = start_addr; |
412 | current_source_end_addr = start_addr + size; | |
c906108c SS |
413 | } |
414 | ||
aff410f1 MS |
415 | /* Finish the symbol definitions for one main source file, close off |
416 | all the lexical contexts for that file (creating struct block's for | |
417 | them), then make the struct symtab for that file and put it in the | |
418 | list of all such. */ | |
c906108c SS |
419 | |
420 | static void | |
fba45db2 | 421 | coff_end_symtab (struct objfile *objfile) |
c906108c | 422 | { |
c906108c SS |
423 | last_source_start_addr = current_source_start_addr; |
424 | ||
4d663531 | 425 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 426 | |
aff410f1 | 427 | /* Reinitialize for beginning of new file. */ |
46212e0b | 428 | set_last_source_file (NULL); |
c906108c SS |
429 | } |
430 | \f | |
af312be7 JB |
431 | /* The linker sometimes generates some non-function symbols inside |
432 | functions referencing variables imported from another DLL. | |
433 | Return nonzero if the given symbol corresponds to one of them. */ | |
434 | ||
435 | static int | |
436 | is_import_fixup_symbol (struct coff_symbol *cs, | |
437 | enum minimal_symbol_type type) | |
438 | { | |
439 | /* The following is a bit of a heuristic using the characterictics | |
440 | of these fixup symbols, but should work well in practice... */ | |
441 | int i; | |
442 | ||
443 | /* Must be a non-static text symbol. */ | |
444 | if (type != mst_text) | |
445 | return 0; | |
446 | ||
447 | /* Must be a non-function symbol. */ | |
448 | if (ISFCN (cs->c_type)) | |
449 | return 0; | |
450 | ||
451 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 452 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
453 | return 0; |
454 | if (! isdigit (cs->c_name[4])) | |
455 | return 0; | |
456 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
457 | /* Nothing, just incrementing index past all digits. */; | |
458 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
459 | return 0; | |
460 | ||
461 | return 1; | |
462 | } | |
463 | ||
fbcebcb1 | 464 | static struct minimal_symbol * |
8dddcb8f TT |
465 | record_minimal_symbol (minimal_symbol_reader &reader, |
466 | struct coff_symbol *cs, CORE_ADDR address, | |
fbcebcb1 DJ |
467 | enum minimal_symbol_type type, int section, |
468 | struct objfile *objfile) | |
c906108c | 469 | { |
aff410f1 | 470 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
471 | if (cs->c_name[0] == '@') |
472 | return NULL; | |
c906108c | 473 | |
af312be7 JB |
474 | if (is_import_fixup_symbol (cs, type)) |
475 | { | |
476 | /* Because the value of these symbols is within a function code | |
477 | range, these symbols interfere with the symbol-from-address | |
478 | reverse lookup; this manifests itselfs in backtraces, or any | |
479 | other commands that prints symbolic addresses. Just pretend | |
480 | these symbols do not exist. */ | |
481 | return NULL; | |
482 | } | |
483 | ||
8dddcb8f | 484 | return reader.record_with_info (cs->c_name, address, type, section); |
c906108c SS |
485 | } |
486 | \f | |
487 | /* coff_symfile_init () | |
488 | is the coff-specific initialization routine for reading symbols. | |
489 | It is passed a struct objfile which contains, among other things, | |
490 | the BFD for the file whose symbols are being read, and a slot for | |
491 | a pointer to "private data" which we fill with cookies and other | |
492 | treats for coff_symfile_read (). | |
493 | ||
aff410f1 MS |
494 | We will only be called if this is a COFF or COFF-like file. BFD |
495 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
496 | uses BFD's determination to vector to us. |
497 | ||
aff410f1 MS |
498 | The ultimate result is a new symtab (or, FIXME, eventually a |
499 | psymtab). */ | |
c906108c SS |
500 | |
501 | static void | |
fba45db2 | 502 | coff_symfile_init (struct objfile *objfile) |
c906108c | 503 | { |
d2f4b8fe | 504 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 505 | struct coff_symfile_info *coff; |
c906108c | 506 | |
d2f4b8fe TT |
507 | /* Allocate struct to keep track of stab reading. */ |
508 | dbx = XCNEW (struct dbx_symfile_info); | |
509 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 510 | |
aff410f1 | 511 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
512 | coff = XCNEW (struct coff_symfile_info); |
513 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
514 | |
515 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
516 | find this causes a significant slowdown in gdb then we could | |
517 | set it in the debug symbol readers only when necessary. */ | |
518 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
519 | } |
520 | ||
aff410f1 MS |
521 | /* This function is called for every section; it finds the outer |
522 | limits of the line table (minimum and maximum file offset) so that | |
523 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 524 | |
c906108c | 525 | static void |
7be0c536 | 526 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
527 | { |
528 | struct coff_symfile_info *info; | |
529 | int size, count; | |
530 | file_ptr offset, maxoff; | |
531 | ||
aff410f1 | 532 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 533 | count = asect->lineno_count; |
aff410f1 | 534 | /* End of warning. */ |
c906108c SS |
535 | |
536 | if (count == 0) | |
537 | return; | |
538 | size = count * local_linesz; | |
539 | ||
c5aa993b | 540 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 541 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 542 | offset = asect->line_filepos; |
aff410f1 | 543 | /* End of warning. */ |
c906108c SS |
544 | |
545 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
546 | info->min_lineno_offset = offset; | |
547 | ||
548 | maxoff = offset + size; | |
549 | if (maxoff > info->max_lineno_offset) | |
550 | info->max_lineno_offset = maxoff; | |
551 | } | |
552 | ||
553 | ||
554 | /* The BFD for this file -- only good while we're actively reading | |
555 | symbols into a psymtab or a symtab. */ | |
556 | ||
557 | static bfd *symfile_bfd; | |
558 | ||
559 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
560 | ||
c906108c | 561 | static void |
b15cc25c | 562 | coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
563 | { |
564 | struct coff_symfile_info *info; | |
c906108c SS |
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; | |
873a915e | 572 | struct cleanup *back_to; |
c906108c | 573 | int stabstrsize; |
c2d11a7d | 574 | |
9a3c8263 SM |
575 | info = (struct coff_symfile_info *) objfile_data (objfile, |
576 | coff_objfile_data_key); | |
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 | 607 | pe_file = |
61012eef GB |
608 | startswith (bfd_get_target (objfile->obfd), "pe") |
609 | || startswith (bfd_get_target (objfile->obfd), "epoc-pe"); | |
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 | 648 | |
d25e8719 | 649 | minimal_symbol_reader reader (objfile); |
c906108c SS |
650 | |
651 | /* Now that the executable file is positioned at symbol table, | |
652 | process it and define symbols accordingly. */ | |
653 | ||
8dddcb8f | 654 | coff_symtab_read (reader, (long) symtab_offset, num_symbols, objfile); |
c906108c | 655 | |
aff410f1 MS |
656 | /* Install any minimal symbols that have been collected as the |
657 | current minimal symbols for this objfile. */ | |
c906108c | 658 | |
d25e8719 | 659 | reader.install (); |
c906108c | 660 | |
303c5ee1 YQ |
661 | if (pe_file) |
662 | { | |
663 | struct minimal_symbol *msym; | |
664 | ||
665 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
666 | { | |
efd66ac6 | 667 | const char *name = MSYMBOL_LINKAGE_NAME (msym); |
303c5ee1 YQ |
668 | |
669 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
670 | or "_imp_", get rid of the prefix, and search the minimal | |
671 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
672 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
20d35291 | 673 | if (MSYMBOL_TYPE (msym) == mst_data) |
303c5ee1 | 674 | { |
20d35291 PA |
675 | const char *name1 = NULL; |
676 | ||
677 | if (startswith (name, "_imp_")) | |
678 | name1 = name + 5; | |
679 | else if (startswith (name, "__imp_")) | |
680 | name1 = name + 6; | |
681 | if (name1 != NULL) | |
682 | { | |
683 | int lead = bfd_get_symbol_leading_char (objfile->obfd); | |
684 | struct bound_minimal_symbol found; | |
685 | ||
686 | if (lead != '\0' && *name1 == lead) | |
687 | name1 += 1; | |
688 | ||
689 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
690 | ||
691 | /* If found, there are symbols named "_imp_foo" and "foo" | |
692 | respectively in OBJFILE. Set the type of symbol "foo" | |
693 | as 'mst_solib_trampoline'. */ | |
694 | if (found.minsym != NULL | |
695 | && MSYMBOL_TYPE (found.minsym) == mst_text) | |
696 | MSYMBOL_TYPE (found.minsym) = mst_solib_trampoline; | |
697 | } | |
303c5ee1 YQ |
698 | } |
699 | } | |
700 | } | |
701 | ||
97cbe998 SDJ |
702 | if (!(objfile->flags & OBJF_READNEVER)) |
703 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); | |
c906108c SS |
704 | |
705 | if (info->stabsects) | |
706 | { | |
c5aa993b | 707 | if (!info->stabstrsect) |
b83266a0 | 708 | { |
3e43a32a MS |
709 | error (_("The debugging information in `%s' is corrupted.\nThe " |
710 | "file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 711 | name); |
b83266a0 SS |
712 | } |
713 | ||
c906108c | 714 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 715 | bfd_get_section_contents? */ |
c906108c SS |
716 | bfd_seek (abfd, abfd->where, 0); |
717 | ||
718 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
719 | ||
720 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
721 | info->textaddr, info->textsize, |
722 | info->stabsects, | |
723 | info->stabstrsect->filepos, stabstrsize); | |
724 | } | |
251d32d9 | 725 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
726 | { |
727 | /* DWARF2 sections. */ | |
f29dff0a | 728 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 729 | } |
c906108c | 730 | |
fea25152 BF |
731 | dwarf2_build_frame_info (objfile); |
732 | ||
9cce227f TG |
733 | /* Try to add separate debug file if no symbols table found. */ |
734 | if (!objfile_has_partial_symbols (objfile)) | |
735 | { | |
736 | char *debugfile; | |
737 | ||
c74f7d1c JT |
738 | debugfile = find_separate_debug_file_by_buildid (objfile); |
739 | ||
740 | if (debugfile == NULL) | |
741 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
8ac244b4 | 742 | make_cleanup (xfree, debugfile); |
9cce227f TG |
743 | |
744 | if (debugfile) | |
745 | { | |
192b62ce | 746 | gdb_bfd_ref_ptr abfd (symfile_bfd_open (debugfile)); |
c5504eaf | 747 | |
192b62ce TT |
748 | symbol_file_add_separate (abfd.get (), debugfile, symfile_flags, |
749 | objfile); | |
9cce227f TG |
750 | } |
751 | } | |
752 | ||
c906108c SS |
753 | do_cleanups (back_to); |
754 | } | |
755 | ||
756 | static void | |
fba45db2 | 757 | coff_new_init (struct objfile *ignore) |
c906108c SS |
758 | { |
759 | } | |
760 | ||
aff410f1 MS |
761 | /* Perform any local cleanups required when we are done with a |
762 | particular objfile. I.E, we are in the process of discarding all | |
763 | symbol information for an objfile, freeing up all memory held for | |
764 | it, and unlinking the objfile struct from the global list of known | |
765 | objfiles. */ | |
c906108c SS |
766 | |
767 | static void | |
fba45db2 | 768 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 769 | { |
aff410f1 | 770 | /* Let stabs reader clean up. */ |
7be570e7 | 771 | stabsread_clear_cache (); |
fe3e1990 DJ |
772 | |
773 | dwarf2_free_objfile (objfile); | |
c906108c | 774 | } |
c906108c | 775 | \f |
c5aa993b | 776 | |
c906108c SS |
777 | /* Given pointers to a symbol table in coff style exec file, |
778 | analyze them and create struct symtab's describing the symbols. | |
779 | NSYMS is the number of symbols in the symbol table. | |
780 | We read them one at a time using read_one_sym (). */ | |
781 | ||
782 | static void | |
8dddcb8f TT |
783 | coff_symtab_read (minimal_symbol_reader &reader, |
784 | long symtab_offset, unsigned int nsyms, | |
fba45db2 | 785 | struct objfile *objfile) |
c906108c | 786 | { |
5e2b427d | 787 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 788 | struct context_stack *newobj; |
c906108c | 789 | struct coff_symbol coff_symbol; |
52f0bd74 | 790 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
791 | static struct internal_syment main_sym; |
792 | static union internal_auxent main_aux; | |
793 | struct coff_symbol fcn_cs_saved; | |
794 | static struct internal_syment fcn_sym_saved; | |
795 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
796 | /* A .file is open. */ |
797 | int in_source_file = 0; | |
798 | int next_file_symnum = -1; | |
799 | /* Name of the current file. */ | |
9f37bbcc | 800 | const char *filestring = ""; |
c906108c SS |
801 | int depth = 0; |
802 | int fcn_first_line = 0; | |
b9179dbc | 803 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
804 | int fcn_last_line = 0; |
805 | int fcn_start_addr = 0; | |
806 | long fcn_line_ptr = 0; | |
807 | int val; | |
808 | CORE_ADDR tmpaddr; | |
05cfdb42 | 809 | struct minimal_symbol *msym; |
c906108c SS |
810 | |
811 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
aff410f1 MS |
812 | it's hard to know I've really worked around it. The fix should |
813 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
814 | fread (in read_one_sym), will (in my example) actually get data |
815 | from file offset 268, when the fseek was to 264 (and ftell shows | |
816 | 264). This causes all hell to break loose. I was unable to | |
817 | reproduce this on a short test program which operated on the same | |
818 | file, performing (I think) the same sequence of operations. | |
819 | ||
820 | It stopped happening when I put in this (former) rewind(). | |
821 | ||
822 | FIXME: Find out if this has been reported to Sun, whether it has | |
823 | been fixed in a later release, etc. */ | |
824 | ||
825 | bfd_seek (objfile->obfd, 0, 0); | |
826 | ||
aff410f1 | 827 | /* Position to read the symbol table. */ |
c906108c SS |
828 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
829 | if (val < 0) | |
4262abfb | 830 | perror_with_name (objfile_name (objfile)); |
c906108c | 831 | |
dd707e8e | 832 | coffread_objfile = objfile; |
c906108c SS |
833 | nlist_bfd_global = objfile->obfd; |
834 | nlist_nsyms_global = nsyms; | |
46212e0b | 835 | set_last_source_file (NULL); |
c906108c SS |
836 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
837 | ||
aff410f1 | 838 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 839 | xfree (type_vector); |
fc474241 | 840 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 841 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 842 | |
4d663531 | 843 | coff_start_symtab (objfile, ""); |
c906108c SS |
844 | |
845 | symnum = 0; | |
846 | while (symnum < nsyms) | |
847 | { | |
848 | QUIT; /* Make this command interruptable. */ | |
849 | ||
850 | read_one_sym (cs, &main_sym, &main_aux); | |
851 | ||
852 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
853 | { | |
46212e0b | 854 | if (get_last_source_file ()) |
c906108c SS |
855 | coff_end_symtab (objfile); |
856 | ||
4d663531 | 857 | coff_start_symtab (objfile, "_globals_"); |
969107c5 EZ |
858 | /* coff_start_symtab will set the language of this symtab to |
859 | language_unknown, since such a ``file name'' is not | |
860 | recognized. Override that with the minimal language to | |
861 | allow printing values in this symtab. */ | |
862 | current_subfile->language = language_minimal; | |
c906108c | 863 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
864 | /* Done with all files, everything from here on out is |
865 | globals. */ | |
c906108c SS |
866 | } |
867 | ||
aff410f1 MS |
868 | /* Special case for file with type declarations only, no |
869 | text. */ | |
46212e0b | 870 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
871 | && cs->c_secnum == N_DEBUG) |
872 | complete_symtab (filestring, 0, 0); | |
873 | ||
874 | /* Typedefs should not be treated as symbol definitions. */ | |
875 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
876 | { | |
aff410f1 MS |
877 | /* Record all functions -- external and static -- in |
878 | minsyms. */ | |
fbcebcb1 | 879 | int section = cs_to_section (cs, objfile); |
c5504eaf | 880 | |
2273f0ac | 881 | tmpaddr = cs->c_value; |
8dddcb8f | 882 | record_minimal_symbol (reader, cs, tmpaddr, mst_text, |
aff410f1 | 883 | section, objfile); |
c906108c SS |
884 | |
885 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
886 | fcn_start_addr = tmpaddr; | |
887 | fcn_cs_saved = *cs; | |
888 | fcn_sym_saved = main_sym; | |
889 | fcn_aux_saved = main_aux; | |
890 | continue; | |
891 | } | |
892 | ||
893 | switch (cs->c_sclass) | |
894 | { | |
c5aa993b JM |
895 | case C_EFCN: |
896 | case C_EXTDEF: | |
897 | case C_ULABEL: | |
898 | case C_USTATIC: | |
899 | case C_LINE: | |
900 | case C_ALIAS: | |
901 | case C_HIDDEN: | |
aff410f1 MS |
902 | complaint (&symfile_complaints, |
903 | _("Bad n_sclass for symbol %s"), | |
23136709 | 904 | cs->c_name); |
c5aa993b | 905 | break; |
c906108c | 906 | |
c5aa993b | 907 | case C_FILE: |
aff410f1 MS |
908 | /* c_value field contains symnum of next .file entry in |
909 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
910 | next_file_symnum = cs->c_value; |
911 | if (cs->c_naux > 0) | |
912 | filestring = coff_getfilename (&main_aux); | |
913 | else | |
914 | filestring = ""; | |
915 | ||
916 | /* Complete symbol table for last object file | |
917 | containing debugging information. */ | |
46212e0b | 918 | if (get_last_source_file ()) |
c5aa993b JM |
919 | { |
920 | coff_end_symtab (objfile); | |
4d663531 | 921 | coff_start_symtab (objfile, filestring); |
c5aa993b JM |
922 | } |
923 | in_source_file = 1; | |
924 | break; | |
c906108c | 925 | |
aff410f1 MS |
926 | /* C_LABEL is used for labels and static functions. |
927 | Including it here allows gdb to see static functions when | |
928 | no debug info is available. */ | |
c5aa993b | 929 | case C_LABEL: |
aff410f1 MS |
930 | /* However, labels within a function can make weird |
931 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
932 | if (within_function) |
933 | break; | |
934 | case C_STAT: | |
935 | case C_THUMBLABEL: | |
936 | case C_THUMBSTAT: | |
937 | case C_THUMBSTATFUNC: | |
938 | if (cs->c_name[0] == '.') | |
939 | { | |
7ecb6532 | 940 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 941 | { |
aff410f1 MS |
942 | /* FIXME: don't wire in ".text" as section name or |
943 | symbol name! */ | |
944 | /* Check for in_source_file deals with case of a | |
945 | file with debugging symbols followed by a later | |
946 | file with no symbols. */ | |
c906108c SS |
947 | if (in_source_file) |
948 | complete_symtab (filestring, | |
aff410f1 MS |
949 | cs->c_value + ANOFFSET (objfile->section_offsets, |
950 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
951 | main_aux.x_scn.x_scnlen); |
952 | in_source_file = 0; | |
953 | } | |
aff410f1 | 954 | /* Flush rest of '.' symbols. */ |
c906108c | 955 | break; |
c5aa993b JM |
956 | } |
957 | else if (!SDB_TYPE (cs->c_type) | |
958 | && cs->c_name[0] == 'L' | |
61012eef GB |
959 | && (startswith (cs->c_name, "LI%") |
960 | || startswith (cs->c_name, "LF%") | |
961 | || startswith (cs->c_name, "LC%") | |
962 | || startswith (cs->c_name, "LP%") | |
963 | || startswith (cs->c_name, "LPB%") | |
964 | || startswith (cs->c_name, "LBB%") | |
965 | || startswith (cs->c_name, "LBE%") | |
966 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
967 | /* At least on a 3b1, gcc generates swbeg and string labels |
968 | that look like this. Ignore them. */ | |
969 | break; | |
aff410f1 | 970 | /* Fall in for static symbols that don't start with '.' */ |
c5aa993b JM |
971 | case C_THUMBEXT: |
972 | case C_THUMBEXTFUNC: | |
973 | case C_EXT: | |
974 | { | |
975 | /* Record it in the minimal symbols regardless of | |
976 | SDB_TYPE. This parallels what we do for other debug | |
977 | formats, and probably is needed to make | |
978 | print_address_symbolic work right without the (now | |
979 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 980 | |
c5aa993b JM |
981 | enum minimal_symbol_type ms_type; |
982 | int sec; | |
2273f0ac | 983 | CORE_ADDR offset = 0; |
c906108c | 984 | |
c5aa993b JM |
985 | if (cs->c_secnum == N_UNDEF) |
986 | { | |
d4862372 JB |
987 | /* This is a common symbol. We used to rely on |
988 | the target to tell us whether it knows where | |
989 | the symbol has been relocated to, but none of | |
990 | the target implementations actually provided | |
991 | that operation. So we just ignore the symbol, | |
992 | the same way we would do if we had a target-side | |
993 | symbol lookup which returned no match. */ | |
994 | break; | |
c5aa993b | 995 | } |
182d43bc EZ |
996 | else if (cs->c_secnum == N_ABS) |
997 | { | |
998 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 999 | relocate) for absolute values. */ |
182d43bc EZ |
1000 | ms_type = mst_abs; |
1001 | sec = cs_to_section (cs, objfile); | |
1002 | tmpaddr = cs->c_value; | |
1003 | } | |
c5aa993b JM |
1004 | else |
1005 | { | |
05cfdb42 | 1006 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 1007 | |
c5aa993b JM |
1008 | sec = cs_to_section (cs, objfile); |
1009 | tmpaddr = cs->c_value; | |
aff410f1 | 1010 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
1011 | if (cs->c_sclass == C_EXT |
1012 | || cs->c_sclass == C_THUMBEXTFUNC | |
1013 | || cs->c_sclass == C_THUMBEXT | |
1014 | || (pe_file && (cs->c_sclass == C_STAT))) | |
2273f0ac | 1015 | offset = ANOFFSET (objfile->section_offsets, sec); |
c906108c | 1016 | |
05cfdb42 | 1017 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 1018 | { |
c5aa993b JM |
1019 | ms_type = |
1020 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
1021 | || cs->c_sclass == C_THUMBEXT ? | |
1022 | mst_text : mst_file_text; | |
85ddcc70 | 1023 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 1024 | } |
05cfdb42 DJ |
1025 | else if (bfd_section->flags & SEC_ALLOC |
1026 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1027 | { |
c5aa993b | 1028 | ms_type = |
aff410f1 MS |
1029 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1030 | ? mst_data : mst_file_data; | |
34e924c0 | 1031 | } |
05cfdb42 | 1032 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1033 | { |
c5aa993b | 1034 | ms_type = |
aff410f1 MS |
1035 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1036 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1037 | } |
1038 | else | |
1039 | ms_type = mst_unknown; | |
c5aa993b | 1040 | } |
c906108c | 1041 | |
8dddcb8f | 1042 | msym = record_minimal_symbol (reader, cs, tmpaddr, ms_type, |
aff410f1 | 1043 | sec, objfile); |
05cfdb42 | 1044 | if (msym) |
aff410f1 MS |
1045 | gdbarch_coff_make_msymbol_special (gdbarch, |
1046 | cs->c_sclass, msym); | |
fbcebcb1 | 1047 | |
c5aa993b JM |
1048 | if (SDB_TYPE (cs->c_type)) |
1049 | { | |
1050 | struct symbol *sym; | |
c5504eaf | 1051 | |
c5aa993b | 1052 | sym = process_coff_symbol |
96baa820 | 1053 | (cs, &main_aux, objfile); |
2273f0ac | 1054 | SYMBOL_VALUE (sym) = tmpaddr + offset; |
c5aa993b JM |
1055 | SYMBOL_SECTION (sym) = sec; |
1056 | } | |
1057 | } | |
1058 | break; | |
1059 | ||
1060 | case C_FCN: | |
7ecb6532 | 1061 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1062 | { |
1063 | within_function = 1; | |
1064 | ||
aff410f1 MS |
1065 | /* Value contains address of first non-init type |
1066 | code. */ | |
c5aa993b | 1067 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1068 | contains line number of '{' }. */ |
c5aa993b | 1069 | if (cs->c_naux != 1) |
23136709 | 1070 | complaint (&symfile_complaints, |
aff410f1 MS |
1071 | _("`.bf' symbol %d has no aux entry"), |
1072 | cs->c_symnum); | |
c5aa993b JM |
1073 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1074 | fcn_first_line_addr = cs->c_value; | |
1075 | ||
1076 | /* Might want to check that locals are 0 and | |
1077 | context_stack_depth is zero, and complain if not. */ | |
1078 | ||
1079 | depth = 0; | |
fe978cb0 | 1080 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1081 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1082 | newobj->name = |
aff410f1 MS |
1083 | process_coff_symbol (&fcn_cs_saved, |
1084 | &fcn_aux_saved, objfile); | |
c5aa993b | 1085 | } |
7ecb6532 | 1086 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1087 | { |
b9179dbc | 1088 | if (!within_function) |
8a3fe4f8 | 1089 | error (_("Bad coff function information.")); |
aff410f1 | 1090 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1091 | not useful for gdb. */ |
1092 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1093 | contains number of lines to '}' */ | |
1094 | ||
1095 | if (context_stack_depth <= 0) | |
aff410f1 | 1096 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1097 | complaint (&symfile_complaints, |
3e43a32a MS |
1098 | _("`.ef' symbol without matching `.bf' " |
1099 | "symbol ignored starting at symnum %d"), | |
23136709 | 1100 | cs->c_symnum); |
c5aa993b JM |
1101 | within_function = 0; |
1102 | break; | |
c906108c | 1103 | } |
c5aa993b | 1104 | |
fe978cb0 | 1105 | newobj = pop_context (); |
c5aa993b | 1106 | /* Stack must be empty now. */ |
fe978cb0 | 1107 | if (context_stack_depth > 0 || newobj == NULL) |
c906108c | 1108 | { |
23136709 | 1109 | complaint (&symfile_complaints, |
3e43a32a MS |
1110 | _("Unmatched .ef symbol(s) ignored " |
1111 | "starting at symnum %d"), | |
23136709 | 1112 | cs->c_symnum); |
c5aa993b JM |
1113 | within_function = 0; |
1114 | break; | |
c906108c | 1115 | } |
c5aa993b JM |
1116 | if (cs->c_naux != 1) |
1117 | { | |
23136709 | 1118 | complaint (&symfile_complaints, |
aff410f1 MS |
1119 | _("`.ef' symbol %d has no aux entry"), |
1120 | cs->c_symnum); | |
c5aa993b JM |
1121 | fcn_last_line = 0x7FFFFFFF; |
1122 | } | |
1123 | else | |
1124 | { | |
1125 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1126 | } | |
1127 | /* fcn_first_line is the line number of the opening '{'. | |
1128 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1129 | of the line number of the first statement of the |
1130 | function - except for one-line functions, for which | |
1131 | it is also the line number of all the statements and | |
1132 | of the closing '}', and for which we do not have any | |
1133 | other statement-line-number. */ | |
c5aa993b JM |
1134 | if (fcn_last_line == 1) |
1135 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1136 | gdbarch_addr_bits_remove (gdbarch, |
1137 | fcn_first_line_addr)); | |
c5aa993b | 1138 | else |
aff410f1 MS |
1139 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1140 | fcn_last_line, objfile); | |
c906108c | 1141 | |
63e43d3a PMR |
1142 | finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
1143 | NULL, newobj->start_addr, | |
c5aa993b JM |
1144 | fcn_cs_saved.c_value |
1145 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 | 1146 | + ANOFFSET (objfile->section_offsets, |
4d663531 | 1147 | SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1148 | within_function = 0; |
1149 | } | |
1150 | break; | |
c906108c | 1151 | |
c5aa993b | 1152 | case C_BLOCK: |
7ecb6532 | 1153 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1154 | { |
1155 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1156 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1157 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1158 | push_context (++depth, tmpaddr); |
1159 | } | |
7ecb6532 | 1160 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1161 | { |
1162 | if (context_stack_depth <= 0) | |
0963b4bd | 1163 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1164 | complaint (&symfile_complaints, |
3e43a32a MS |
1165 | _("`.eb' symbol without matching `.bb' " |
1166 | "symbol ignored starting at symnum %d"), | |
23136709 | 1167 | cs->c_symnum); |
c5aa993b JM |
1168 | break; |
1169 | } | |
c906108c | 1170 | |
fe978cb0 PA |
1171 | newobj = pop_context (); |
1172 | if (depth-- != newobj->depth) | |
c5aa993b | 1173 | { |
3e43a32a MS |
1174 | complaint (&symfile_complaints, |
1175 | _("Mismatched .eb symbol ignored " | |
1176 | "starting at symnum %d"), | |
23136709 | 1177 | symnum); |
c5aa993b JM |
1178 | break; |
1179 | } | |
1180 | if (local_symbols && context_stack_depth > 0) | |
1181 | { | |
1182 | tmpaddr = | |
aff410f1 MS |
1183 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1184 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1185 | /* Make a block for the local symbols within. */ |
63e43d3a | 1186 | finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 1187 | newobj->start_addr, tmpaddr); |
c5aa993b JM |
1188 | } |
1189 | /* Now pop locals of block just finished. */ | |
fe978cb0 | 1190 | local_symbols = newobj->locals; |
c5aa993b JM |
1191 | } |
1192 | break; | |
c906108c | 1193 | |
c5aa993b | 1194 | default: |
96baa820 | 1195 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1196 | break; |
c906108c SS |
1197 | } |
1198 | } | |
1199 | ||
1b6bc7e0 CF |
1200 | if ((nsyms == 0) && (pe_file)) |
1201 | { | |
c2f20dd6 | 1202 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1203 | executable, so try to read the export table. */ |
8dddcb8f | 1204 | read_pe_exported_syms (reader, objfile); |
1b6bc7e0 CF |
1205 | } |
1206 | ||
46212e0b | 1207 | if (get_last_source_file ()) |
c906108c SS |
1208 | coff_end_symtab (objfile); |
1209 | ||
1210 | /* Patch up any opaque types (references to types that are not defined | |
1211 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 DE |
1212 | { |
1213 | struct compunit_symtab *cu; | |
1214 | struct symtab *s; | |
1215 | ||
1216 | ALL_OBJFILE_FILETABS (objfile, cu, s) | |
1217 | patch_opaque_types (s); | |
1218 | } | |
c906108c | 1219 | |
dd707e8e | 1220 | coffread_objfile = NULL; |
c906108c SS |
1221 | } |
1222 | \f | |
1223 | /* Routines for reading headers and symbols from executable. */ | |
1224 | ||
aff410f1 MS |
1225 | /* Read the next symbol, swap it, and return it in both |
1226 | internal_syment form, and coff_symbol form. Also return its first | |
1227 | auxent, if any, in internal_auxent form, and skip any other | |
1228 | auxents. */ | |
c906108c SS |
1229 | |
1230 | static void | |
aa1ee363 AC |
1231 | read_one_sym (struct coff_symbol *cs, |
1232 | struct internal_syment *sym, | |
1233 | union internal_auxent *aux) | |
c906108c SS |
1234 | { |
1235 | int i; | |
3b016d57 | 1236 | bfd_size_type bytes; |
c906108c SS |
1237 | |
1238 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1239 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1240 | if (bytes != local_symesz) | |
4262abfb | 1241 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1242 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1243 | cs->c_naux = sym->n_numaux & 0xff; |
1244 | if (cs->c_naux >= 1) | |
1245 | { | |
3b016d57 DJ |
1246 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1247 | if (bytes != local_auxesz) | |
4262abfb | 1248 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1249 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1250 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1251 | 0, cs->c_naux, (char *) aux); |
1252 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1253 | is important). */ |
c5aa993b | 1254 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1255 | { |
1256 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1257 | if (bytes != local_auxesz) | |
4262abfb JK |
1258 | error (_("%s: error reading symbols"), |
1259 | objfile_name (coffread_objfile)); | |
3b016d57 | 1260 | } |
c906108c SS |
1261 | } |
1262 | cs->c_name = getsymname (sym); | |
1263 | cs->c_value = sym->n_value; | |
1264 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1265 | cs->c_secnum = sym->n_scnum; | |
1266 | cs->c_type = (unsigned) sym->n_type; | |
1267 | if (!SDB_TYPE (cs->c_type)) | |
1268 | cs->c_type = 0; | |
1269 | ||
1270 | #if 0 | |
1271 | if (cs->c_sclass & 128) | |
3d263c1d | 1272 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1273 | #endif |
1274 | ||
1275 | symnum += 1 + cs->c_naux; | |
1276 | ||
1277 | /* The PE file format stores symbol values as offsets within the | |
1278 | section, rather than as absolute addresses. We correct that | |
1279 | here, if the symbol has an appropriate storage class. FIXME: We | |
1280 | should use BFD to read the symbols, rather than duplicating the | |
1281 | work here. */ | |
1282 | if (pe_file) | |
1283 | { | |
1284 | switch (cs->c_sclass) | |
1285 | { | |
1286 | case C_EXT: | |
1287 | case C_THUMBEXT: | |
1288 | case C_THUMBEXTFUNC: | |
1289 | case C_SECTION: | |
1290 | case C_NT_WEAK: | |
1291 | case C_STAT: | |
1292 | case C_THUMBSTAT: | |
1293 | case C_THUMBSTATFUNC: | |
1294 | case C_LABEL: | |
1295 | case C_THUMBLABEL: | |
1296 | case C_BLOCK: | |
1297 | case C_FCN: | |
1298 | case C_EFCN: | |
1299 | if (cs->c_secnum != 0) | |
1300 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1301 | break; | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | \f | |
aff410f1 | 1306 | /* Support for string table handling. */ |
c906108c SS |
1307 | |
1308 | static char *stringtab = NULL; | |
1309 | ||
1310 | static int | |
fba45db2 | 1311 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1312 | { |
1313 | long length; | |
1314 | int val; | |
1315 | unsigned char lengthbuf[4]; | |
1316 | ||
1317 | free_stringtab (); | |
1318 | ||
1319 | /* If the file is stripped, the offset might be zero, indicating no | |
aff410f1 | 1320 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1321 | if (offset == 0) |
1322 | return 0; | |
1323 | ||
1324 | if (bfd_seek (abfd, offset, 0) < 0) | |
1325 | return -1; | |
1326 | ||
3a42e9d0 | 1327 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1328 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1329 | |
c906108c | 1330 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1331 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1332 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1333 | return 0; | |
1334 | ||
1335 | stringtab = (char *) xmalloc (length); | |
aff410f1 MS |
1336 | /* This is in target format (probably not very useful, and not |
1337 | currently used), not host format. */ | |
c906108c | 1338 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1339 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1340 | return 0; |
1341 | ||
aff410f1 MS |
1342 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1343 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1344 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1345 | return -1; | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | static void | |
fba45db2 | 1351 | free_stringtab (void) |
c906108c SS |
1352 | { |
1353 | if (stringtab) | |
b8c9b27d | 1354 | xfree (stringtab); |
c906108c SS |
1355 | stringtab = NULL; |
1356 | } | |
1357 | ||
74b7792f AC |
1358 | static void |
1359 | free_stringtab_cleanup (void *ignore) | |
1360 | { | |
1361 | free_stringtab (); | |
1362 | } | |
1363 | ||
c906108c | 1364 | static char * |
fba45db2 | 1365 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1366 | { |
c5aa993b | 1367 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1368 | char *result; |
1369 | ||
1370 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1371 | { | |
1372 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1373 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1374 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1375 | } | |
1376 | else | |
1377 | { | |
1378 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1379 | buffer[SYMNMLEN] = '\0'; | |
1380 | result = buffer; | |
1381 | } | |
1382 | return result; | |
1383 | } | |
1384 | ||
aff410f1 MS |
1385 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1386 | Return only the last component of the name. Result is in static | |
1387 | storage and is only good for temporary use. */ | |
c906108c | 1388 | |
9f37bbcc | 1389 | static const char * |
fba45db2 | 1390 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1391 | { |
1392 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1393 | const char *result; |
c906108c SS |
1394 | |
1395 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1396 | { |
1397 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1398 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1399 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1400 | } | |
c906108c SS |
1401 | else |
1402 | { | |
1403 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1404 | buffer[FILNMLEN] = '\0'; | |
1405 | } | |
1406 | result = buffer; | |
1407 | ||
1408 | /* FIXME: We should not be throwing away the information about what | |
1409 | directory. It should go into dirname of the symtab, or some such | |
1410 | place. */ | |
9f37bbcc | 1411 | result = lbasename (result); |
c906108c SS |
1412 | return (result); |
1413 | } | |
1414 | \f | |
1415 | /* Support for line number handling. */ | |
1416 | ||
1417 | static char *linetab = NULL; | |
1418 | static long linetab_offset; | |
1419 | static unsigned long linetab_size; | |
1420 | ||
1421 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1422 | external (unswapped) format in memory; we'll swap them as we enter | |
1423 | them into GDB's data structures. */ | |
c5aa993b | 1424 | |
c906108c | 1425 | static int |
fba45db2 | 1426 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1427 | { |
1428 | int val; | |
1429 | ||
1430 | linetab_offset = offset; | |
1431 | linetab_size = size; | |
1432 | ||
c5aa993b | 1433 | free_linetab (); |
c906108c SS |
1434 | |
1435 | if (size == 0) | |
1436 | return 0; | |
1437 | ||
1438 | if (bfd_seek (abfd, offset, 0) < 0) | |
1439 | return -1; | |
c5aa993b | 1440 | |
aff410f1 | 1441 | /* Allocate the desired table, plus a sentinel. */ |
c906108c SS |
1442 | linetab = (char *) xmalloc (size + local_linesz); |
1443 | ||
3a42e9d0 | 1444 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1445 | if (val != size) |
1446 | return -1; | |
1447 | ||
aff410f1 | 1448 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1449 | memset (linetab + size, 0, local_linesz); |
1450 | ||
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | static void | |
fba45db2 | 1455 | free_linetab (void) |
c906108c SS |
1456 | { |
1457 | if (linetab) | |
b8c9b27d | 1458 | xfree (linetab); |
c906108c SS |
1459 | linetab = NULL; |
1460 | } | |
1461 | ||
74b7792f AC |
1462 | static void |
1463 | free_linetab_cleanup (void *ignore) | |
1464 | { | |
1465 | free_linetab (); | |
1466 | } | |
1467 | ||
c906108c SS |
1468 | #if !defined (L_LNNO32) |
1469 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1470 | #endif | |
1471 | ||
1472 | static void | |
aa1ee363 AC |
1473 | enter_linenos (long file_offset, int first_line, |
1474 | int last_line, struct objfile *objfile) | |
c906108c | 1475 | { |
fbf65064 | 1476 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1477 | char *rawptr; |
c906108c SS |
1478 | struct internal_lineno lptr; |
1479 | ||
1480 | if (!linetab) | |
c5aa993b | 1481 | return; |
c906108c SS |
1482 | if (file_offset < linetab_offset) |
1483 | { | |
23136709 | 1484 | complaint (&symfile_complaints, |
3d263c1d | 1485 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1486 | file_offset); |
aff410f1 | 1487 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1488 | return; |
aff410f1 MS |
1489 | file_offset += linetab_offset; /* Try reading at that linetab |
1490 | offset. */ | |
c906108c | 1491 | } |
c5aa993b | 1492 | |
c906108c SS |
1493 | rawptr = &linetab[file_offset - linetab_offset]; |
1494 | ||
aff410f1 | 1495 | /* Skip first line entry for each function. */ |
c906108c | 1496 | rawptr += local_linesz; |
aff410f1 | 1497 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1498 | first_line--; |
1499 | ||
e6a8a7d2 EZ |
1500 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1501 | info), the next function's L_LNNO32 might not be zero, so don't | |
1502 | overstep the table's end in any case. */ | |
1503 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1504 | { |
1505 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1506 | rawptr += local_linesz; | |
e6a8a7d2 | 1507 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1508 | we exit. */ |
c5aa993b | 1509 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1510 | { |
1511 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1512 | addr += ANOFFSET (objfile->section_offsets, |
1513 | SECT_OFF_TEXT (objfile)); | |
1514 | record_line (current_subfile, | |
1515 | first_line + L_LNNO32 (&lptr), | |
fbf65064 UW |
1516 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1517 | } | |
c5aa993b JM |
1518 | else |
1519 | break; | |
1520 | } | |
c906108c SS |
1521 | } |
1522 | \f | |
1523 | static void | |
fba45db2 | 1524 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1525 | { |
52f0bd74 AC |
1526 | struct type *target = TYPE_TARGET_TYPE (type); |
1527 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1528 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1529 | ||
1530 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1531 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1532 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1533 | field_size); | |
c906108c | 1534 | |
aff410f1 MS |
1535 | memcpy (TYPE_FIELDS (target), |
1536 | TYPE_FIELDS (real_target), | |
1537 | field_size); | |
c906108c SS |
1538 | |
1539 | if (TYPE_NAME (real_target)) | |
1540 | { | |
0d5cff50 DE |
1541 | /* The previous copy of TYPE_NAME is allocated by |
1542 | process_coff_symbol. */ | |
c906108c | 1543 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1544 | xfree ((char*) TYPE_NAME (target)); |
1545 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1546 | } |
1547 | } | |
1548 | ||
1549 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1550 | so that they can be used to print out opaque data structures |
1551 | properly. */ | |
c906108c SS |
1552 | |
1553 | static void | |
fba45db2 | 1554 | patch_opaque_types (struct symtab *s) |
c906108c | 1555 | { |
52f0bd74 | 1556 | struct block *b; |
8157b174 | 1557 | struct block_iterator iter; |
52f0bd74 | 1558 | struct symbol *real_sym; |
c5aa993b | 1559 | |
aff410f1 | 1560 | /* Go through the per-file symbols only. */ |
439247b6 | 1561 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1562 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1563 | { |
1564 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1565 | Remove syms from the chain when their types are stored, |
1566 | but search the whole chain, as there may be several syms | |
1567 | from different files with the same name. */ | |
5aafa1cc PM |
1568 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1569 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1570 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1571 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1572 | { |
0d5cff50 | 1573 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1574 | int hash = hashname (name); |
1575 | struct symbol *sym, *prev; | |
c5aa993b | 1576 | |
c906108c SS |
1577 | prev = 0; |
1578 | for (sym = opaque_type_chain[hash]; sym;) | |
1579 | { | |
5aafa1cc PM |
1580 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1581 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1582 | { |
1583 | if (prev) | |
1584 | { | |
1585 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1586 | } | |
1587 | else | |
1588 | { | |
1589 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1590 | } | |
c5aa993b | 1591 | |
c906108c | 1592 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1593 | |
c906108c SS |
1594 | if (prev) |
1595 | { | |
1596 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1597 | } | |
1598 | else | |
1599 | { | |
1600 | sym = opaque_type_chain[hash]; | |
1601 | } | |
1602 | } | |
1603 | else | |
1604 | { | |
1605 | prev = sym; | |
1606 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1607 | } | |
1608 | } | |
1609 | } | |
1610 | } | |
1611 | } | |
1612 | \f | |
768a979c UW |
1613 | static int |
1614 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1615 | { | |
1616 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1617 | } | |
1618 | ||
1619 | static const struct symbol_register_ops coff_register_funcs = { | |
1620 | coff_reg_to_regnum | |
1621 | }; | |
1622 | ||
f1e6e072 TT |
1623 | /* The "aclass" index for computed COFF symbols. */ |
1624 | ||
1625 | static int coff_register_index; | |
1626 | ||
c906108c | 1627 | static struct symbol * |
aa1ee363 AC |
1628 | process_coff_symbol (struct coff_symbol *cs, |
1629 | union internal_auxent *aux, | |
fba45db2 | 1630 | struct objfile *objfile) |
c906108c | 1631 | { |
e623cf5d | 1632 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1633 | char *name; |
1634 | ||
c906108c SS |
1635 | name = cs->c_name; |
1636 | name = EXTERNAL_NAME (name, objfile->obfd); | |
f85f34ed TT |
1637 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
1638 | &objfile->objfile_obstack); | |
04a679b8 | 1639 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1640 | |
1641 | /* default assumptions */ | |
1642 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1643 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1644 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1645 | ||
1646 | if (ISFCN (cs->c_type)) | |
1647 | { | |
aff410f1 MS |
1648 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1649 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1650 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1651 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1652 | aux, objfile)); | |
c906108c | 1653 | |
f1e6e072 | 1654 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1655 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1656 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1657 | add_symbol_to_list (sym, &file_symbols); | |
1658 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1659 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1660 | add_symbol_to_list (sym, &global_symbols); | |
1661 | } | |
1662 | else | |
1663 | { | |
5e2b427d | 1664 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1665 | switch (cs->c_sclass) |
1666 | { | |
c5aa993b JM |
1667 | case C_NULL: |
1668 | break; | |
c906108c | 1669 | |
c5aa993b | 1670 | case C_AUTO: |
f1e6e072 | 1671 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c5aa993b JM |
1672 | add_symbol_to_list (sym, &local_symbols); |
1673 | break; | |
c906108c | 1674 | |
c5aa993b JM |
1675 | case C_THUMBEXT: |
1676 | case C_THUMBEXTFUNC: | |
1677 | case C_EXT: | |
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 | add_symbol_to_list (sym, &global_symbols); |
1683 | break; | |
c906108c | 1684 | |
c5aa993b JM |
1685 | case C_THUMBSTAT: |
1686 | case C_THUMBSTATFUNC: | |
1687 | case C_STAT: | |
f1e6e072 | 1688 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1689 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1690 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1691 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1692 | if (within_function) |
1693 | { | |
aff410f1 | 1694 | /* Static symbol of local scope. */ |
c906108c SS |
1695 | add_symbol_to_list (sym, &local_symbols); |
1696 | } | |
c5aa993b JM |
1697 | else |
1698 | { | |
aff410f1 | 1699 | /* Static symbol at top level of file. */ |
c906108c SS |
1700 | add_symbol_to_list (sym, &file_symbols); |
1701 | } | |
c5aa993b | 1702 | break; |
c906108c SS |
1703 | |
1704 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1705 | case C_GLBLREG: |
c906108c | 1706 | #endif |
c5aa993b | 1707 | case C_REG: |
f1e6e072 | 1708 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1709 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b JM |
1710 | add_symbol_to_list (sym, &local_symbols); |
1711 | break; | |
c906108c | 1712 | |
c5aa993b JM |
1713 | case C_THUMBLABEL: |
1714 | case C_LABEL: | |
1715 | break; | |
c906108c | 1716 | |
c5aa993b | 1717 | case C_ARG: |
f1e6e072 | 1718 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1719 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1720 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1721 | break; |
c906108c | 1722 | |
c5aa993b | 1723 | case C_REGPARM: |
f1e6e072 | 1724 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1725 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1726 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1727 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1728 | break; |
c906108c | 1729 | |
c5aa993b | 1730 | case C_TPDEF: |
f1e6e072 | 1731 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1732 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1733 | |
0963b4bd | 1734 | /* If type has no name, give it one. */ |
c5aa993b JM |
1735 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1736 | { | |
1737 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1738 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1739 | { | |
aff410f1 MS |
1740 | /* If we are giving a name to a type such as |
1741 | "pointer to foo" or "function returning foo", we | |
1742 | better not set the TYPE_NAME. If the program | |
1743 | contains "typedef char *caddr_t;", we don't want | |
1744 | all variables of type char * to print as caddr_t. | |
1745 | This is not just a consequence of GDB's type | |
1746 | management; CC and GCC (at least through version | |
1747 | 2.4) both output variables of either type char * | |
1748 | or caddr_t with the type refering to the C_TPDEF | |
1749 | symbol for caddr_t. If a future compiler cleans | |
1750 | this up it GDB is not ready for it yet, but if it | |
1751 | becomes ready we somehow need to disable this | |
1752 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1753 | |
1754 | Sigh. | |
1755 | ||
1756 | Fortunately, this check seems not to be necessary | |
1757 | for anything except pointers or functions. */ | |
1758 | ; | |
1759 | } | |
1760 | else | |
1761 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1762 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1763 | } |
c906108c | 1764 | |
aff410f1 MS |
1765 | /* Keep track of any type which points to empty structured |
1766 | type, so it can be filled from a definition from another | |
1767 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1768 | not an empty structured type, though; the forward | |
1769 | references work themselves out via the magic of | |
1770 | coff_lookup_type. */ | |
5aafa1cc PM |
1771 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1772 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1773 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1774 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1775 | { |
3567439c | 1776 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1777 | |
c5aa993b JM |
1778 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1779 | opaque_type_chain[i] = sym; | |
1780 | } | |
1781 | add_symbol_to_list (sym, &file_symbols); | |
1782 | break; | |
c906108c | 1783 | |
c5aa993b JM |
1784 | case C_STRTAG: |
1785 | case C_UNTAG: | |
1786 | case C_ENTAG: | |
f1e6e072 | 1787 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1788 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1789 | |
1790 | /* Some compilers try to be helpful by inventing "fake" | |
1791 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1792 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
c5aa993b | 1793 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1794 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1795 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1796 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1797 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1798 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1799 | |
1800 | add_symbol_to_list (sym, &file_symbols); | |
1801 | break; | |
c906108c | 1802 | |
c5aa993b JM |
1803 | default: |
1804 | break; | |
c906108c SS |
1805 | } |
1806 | } | |
1807 | return sym; | |
1808 | } | |
1809 | \f | |
1810 | /* Decode a coff type specifier; return the type that is meant. */ | |
1811 | ||
1812 | static struct type * | |
aa1ee363 | 1813 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1814 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1815 | { |
52f0bd74 | 1816 | struct type *type = 0; |
c906108c SS |
1817 | unsigned int new_c_type; |
1818 | ||
1819 | if (c_type & ~N_BTMASK) | |
1820 | { | |
1821 | new_c_type = DECREF (c_type); | |
1822 | if (ISPTR (c_type)) | |
1823 | { | |
5e2b427d | 1824 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1825 | type = lookup_pointer_type (type); |
1826 | } | |
1827 | else if (ISFCN (c_type)) | |
1828 | { | |
5e2b427d | 1829 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1830 | type = lookup_function_type (type); |
1831 | } | |
1832 | else if (ISARY (c_type)) | |
1833 | { | |
1834 | int i, n; | |
aa1ee363 | 1835 | unsigned short *dim; |
c906108c SS |
1836 | struct type *base_type, *index_type, *range_type; |
1837 | ||
1838 | /* Define an array type. */ | |
aff410f1 | 1839 | /* auxent refers to array, not base type. */ |
c906108c SS |
1840 | if (aux->x_sym.x_tagndx.l == 0) |
1841 | cs->c_naux = 0; | |
1842 | ||
aff410f1 | 1843 | /* Shift the indices down. */ |
c906108c SS |
1844 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1845 | i = 1; | |
1846 | n = dim[0]; | |
1847 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1848 | *dim = *(dim + 1); | |
1849 | *dim = 0; | |
1850 | ||
5e2b427d | 1851 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1852 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 SA |
1853 | range_type |
1854 | = create_static_range_type ((struct type *) NULL, | |
1855 | index_type, 0, n - 1); | |
c906108c | 1856 | type = |
aff410f1 MS |
1857 | create_array_type ((struct type *) NULL, |
1858 | base_type, range_type); | |
c906108c SS |
1859 | } |
1860 | return type; | |
1861 | } | |
1862 | ||
aff410f1 MS |
1863 | /* Reference to existing type. This only occurs with the struct, |
1864 | union, and enum types. EPI a29k coff fakes us out by producing | |
1865 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1866 | unions, and enums, so we have to check the c_sclass field. SCO | |
1867 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1868 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1869 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1870 | { | |
1871 | if (cs->c_sclass != C_STRTAG | |
1872 | && cs->c_sclass != C_UNTAG | |
1873 | && cs->c_sclass != C_ENTAG | |
1874 | && aux->x_sym.x_tagndx.l >= 0) | |
1875 | { | |
1876 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1877 | return type; | |
1878 | } | |
1879 | else | |
1880 | { | |
23136709 | 1881 | complaint (&symfile_complaints, |
3d263c1d | 1882 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1883 | cs->c_name); |
aff410f1 | 1884 | /* And fall through to decode_base_type... */ |
c906108c SS |
1885 | } |
1886 | } | |
1887 | ||
5e2b427d | 1888 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1889 | } |
1890 | ||
1891 | /* Decode a coff type specifier for function definition; | |
1892 | return the type that the function returns. */ | |
1893 | ||
1894 | static struct type * | |
aff410f1 MS |
1895 | decode_function_type (struct coff_symbol *cs, |
1896 | unsigned int c_type, | |
1897 | union internal_auxent *aux, | |
1898 | struct objfile *objfile) | |
c906108c SS |
1899 | { |
1900 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1901 | cs->c_naux = 0; /* auxent refers to function, not base |
1902 | type. */ | |
c906108c | 1903 | |
5e2b427d | 1904 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1905 | } |
1906 | \f | |
aff410f1 | 1907 | /* Basic C types. */ |
c906108c SS |
1908 | |
1909 | static struct type * | |
aff410f1 MS |
1910 | decode_base_type (struct coff_symbol *cs, |
1911 | unsigned int c_type, | |
1912 | union internal_auxent *aux, | |
1913 | struct objfile *objfile) | |
c906108c | 1914 | { |
5e2b427d | 1915 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1916 | struct type *type; |
1917 | ||
1918 | switch (c_type) | |
1919 | { | |
c5aa993b | 1920 | case T_NULL: |
aff410f1 | 1921 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1922 | return objfile_type (objfile)->builtin_void; |
c906108c | 1923 | |
c906108c | 1924 | #ifdef T_VOID |
c5aa993b JM |
1925 | case T_VOID: |
1926 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1927 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1928 | #endif |
1929 | ||
c5aa993b | 1930 | case T_CHAR: |
46bf5051 | 1931 | return objfile_type (objfile)->builtin_char; |
c906108c | 1932 | |
c5aa993b | 1933 | case T_SHORT: |
46bf5051 | 1934 | return objfile_type (objfile)->builtin_short; |
c906108c | 1935 | |
c5aa993b | 1936 | case T_INT: |
46bf5051 | 1937 | return objfile_type (objfile)->builtin_int; |
c906108c | 1938 | |
c5aa993b JM |
1939 | case T_LONG: |
1940 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1941 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1942 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1943 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1944 | else |
46bf5051 | 1945 | return objfile_type (objfile)->builtin_long; |
c906108c | 1946 | |
c5aa993b | 1947 | case T_FLOAT: |
46bf5051 | 1948 | return objfile_type (objfile)->builtin_float; |
c906108c | 1949 | |
c5aa993b | 1950 | case T_DOUBLE: |
46bf5051 | 1951 | return objfile_type (objfile)->builtin_double; |
c906108c | 1952 | |
c5aa993b | 1953 | case T_LNGDBL: |
46bf5051 | 1954 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1955 | |
c5aa993b JM |
1956 | case T_STRUCT: |
1957 | if (cs->c_naux != 1) | |
1958 | { | |
aff410f1 | 1959 | /* Anonymous structure type. */ |
c5aa993b JM |
1960 | type = coff_alloc_type (cs->c_symnum); |
1961 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1962 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1963 | /* This used to set the tag to "<opaque>". But I think |
1964 | setting it to NULL is right, and the printing code can | |
1965 | print it as "struct {...}". */ | |
c5aa993b JM |
1966 | TYPE_TAG_NAME (type) = NULL; |
1967 | INIT_CPLUS_SPECIFIC (type); | |
1968 | TYPE_LENGTH (type) = 0; | |
1969 | TYPE_FIELDS (type) = 0; | |
1970 | TYPE_NFIELDS (type) = 0; | |
1971 | } | |
1972 | else | |
1973 | { | |
1974 | type = coff_read_struct_type (cs->c_symnum, | |
1975 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1976 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1977 | objfile); | |
c5aa993b JM |
1978 | } |
1979 | return type; | |
c906108c | 1980 | |
c5aa993b JM |
1981 | case T_UNION: |
1982 | if (cs->c_naux != 1) | |
1983 | { | |
aff410f1 | 1984 | /* Anonymous union type. */ |
c5aa993b JM |
1985 | type = coff_alloc_type (cs->c_symnum); |
1986 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1987 | /* This used to set the tag to "<opaque>". But I think |
1988 | setting it to NULL is right, and the printing code can | |
1989 | print it as "union {...}". */ | |
c5aa993b JM |
1990 | TYPE_TAG_NAME (type) = NULL; |
1991 | INIT_CPLUS_SPECIFIC (type); | |
1992 | TYPE_LENGTH (type) = 0; | |
1993 | TYPE_FIELDS (type) = 0; | |
1994 | TYPE_NFIELDS (type) = 0; | |
1995 | } | |
1996 | else | |
1997 | { | |
1998 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1999 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
2000 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
2001 | objfile); | |
c5aa993b JM |
2002 | } |
2003 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
2004 | return type; | |
c906108c | 2005 | |
c5aa993b JM |
2006 | case T_ENUM: |
2007 | if (cs->c_naux != 1) | |
2008 | { | |
aff410f1 | 2009 | /* Anonymous enum type. */ |
c5aa993b JM |
2010 | type = coff_alloc_type (cs->c_symnum); |
2011 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
2012 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
2013 | /* This used to set the tag to "<opaque>". But I think |
2014 | setting it to NULL is right, and the printing code can | |
2015 | print it as "enum {...}". */ | |
c5aa993b JM |
2016 | TYPE_TAG_NAME (type) = NULL; |
2017 | TYPE_LENGTH (type) = 0; | |
2018 | TYPE_FIELDS (type) = 0; | |
2019 | TYPE_NFIELDS (type) = 0; | |
2020 | } | |
2021 | else | |
2022 | { | |
2023 | type = coff_read_enum_type (cs->c_symnum, | |
2024 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
2025 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
2026 | objfile); | |
c5aa993b JM |
2027 | } |
2028 | return type; | |
2029 | ||
2030 | case T_MOE: | |
aff410f1 | 2031 | /* Shouldn't show up here. */ |
c5aa993b | 2032 | break; |
c906108c | 2033 | |
c5aa993b | 2034 | case T_UCHAR: |
46bf5051 | 2035 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 2036 | |
c5aa993b | 2037 | case T_USHORT: |
46bf5051 | 2038 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 2039 | |
c5aa993b | 2040 | case T_UINT: |
46bf5051 | 2041 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 2042 | |
c5aa993b JM |
2043 | case T_ULONG: |
2044 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 2045 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 2046 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 2047 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 2048 | else |
46bf5051 | 2049 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 2050 | } |
aff410f1 MS |
2051 | complaint (&symfile_complaints, |
2052 | _("Unexpected type for symbol %s"), cs->c_name); | |
46bf5051 | 2053 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
2054 | } |
2055 | \f | |
2056 | /* This page contains subroutines of read_type. */ | |
2057 | ||
2058 | /* Read the description of a structure (or union type) and return an | |
2059 | object describing the type. */ | |
2060 | ||
2061 | static struct type * | |
5e2b427d UW |
2062 | coff_read_struct_type (int index, int length, int lastsym, |
2063 | struct objfile *objfile) | |
c906108c SS |
2064 | { |
2065 | struct nextfield | |
2066 | { | |
2067 | struct nextfield *next; | |
2068 | struct field field; | |
2069 | }; | |
2070 | ||
52f0bd74 AC |
2071 | struct type *type; |
2072 | struct nextfield *list = 0; | |
fe978cb0 | 2073 | struct nextfield *newobj; |
c906108c | 2074 | int nfields = 0; |
52f0bd74 | 2075 | int n; |
c906108c SS |
2076 | char *name; |
2077 | struct coff_symbol member_sym; | |
52f0bd74 | 2078 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2079 | struct internal_syment sub_sym; |
2080 | union internal_auxent sub_aux; | |
2081 | int done = 0; | |
2082 | ||
2083 | type = coff_alloc_type (index); | |
2084 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2085 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2086 | TYPE_LENGTH (type) = length; |
2087 | ||
2088 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2089 | { | |
2090 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2091 | name = ms->c_name; | |
5e2b427d | 2092 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2093 | |
2094 | switch (ms->c_sclass) | |
2095 | { | |
c5aa993b JM |
2096 | case C_MOS: |
2097 | case C_MOU: | |
2098 | ||
2099 | /* Get space to record the next field's data. */ | |
8d749320 | 2100 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2101 | newobj->next = list; |
2102 | list = newobj; | |
c5aa993b JM |
2103 | |
2104 | /* Save the data. */ | |
224c3ddb SM |
2105 | list->field.name |
2106 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2107 | name, strlen (name)); |
aff410f1 MS |
2108 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2109 | &sub_aux, objfile); | |
d6a843b5 | 2110 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2111 | FIELD_BITSIZE (list->field) = 0; |
2112 | nfields++; | |
2113 | break; | |
c906108c | 2114 | |
c5aa993b JM |
2115 | case C_FIELD: |
2116 | ||
2117 | /* Get space to record the next field's data. */ | |
8d749320 | 2118 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2119 | newobj->next = list; |
2120 | list = newobj; | |
c5aa993b JM |
2121 | |
2122 | /* Save the data. */ | |
224c3ddb SM |
2123 | list->field.name |
2124 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2125 | name, strlen (name)); |
aff410f1 MS |
2126 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2127 | &sub_aux, objfile); | |
d6a843b5 | 2128 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2129 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2130 | nfields++; | |
2131 | break; | |
c906108c | 2132 | |
c5aa993b JM |
2133 | case C_EOS: |
2134 | done = 1; | |
2135 | break; | |
c906108c SS |
2136 | } |
2137 | } | |
2138 | /* Now create the vector of fields, and record how big it is. */ | |
2139 | ||
2140 | TYPE_NFIELDS (type) = nfields; | |
2141 | TYPE_FIELDS (type) = (struct field *) | |
2142 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2143 | ||
2144 | /* Copy the saved-up fields into the field vector. */ | |
2145 | ||
2146 | for (n = nfields; list; list = list->next) | |
2147 | TYPE_FIELD (type, --n) = list->field; | |
2148 | ||
2149 | return type; | |
2150 | } | |
2151 | \f | |
2152 | /* Read a definition of an enumeration type, | |
2153 | and create and return a suitable type object. | |
2154 | Also defines the symbols that represent the values of the type. */ | |
2155 | ||
c906108c | 2156 | static struct type * |
5e2b427d UW |
2157 | coff_read_enum_type (int index, int length, int lastsym, |
2158 | struct objfile *objfile) | |
c906108c | 2159 | { |
5e2b427d | 2160 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2161 | struct symbol *sym; |
2162 | struct type *type; | |
c906108c SS |
2163 | int nsyms = 0; |
2164 | int done = 0; | |
2165 | struct pending **symlist; | |
2166 | struct coff_symbol member_sym; | |
52f0bd74 | 2167 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2168 | struct internal_syment sub_sym; |
2169 | union internal_auxent sub_aux; | |
2170 | struct pending *osyms, *syms; | |
2171 | int o_nsyms; | |
52f0bd74 | 2172 | int n; |
c906108c SS |
2173 | char *name; |
2174 | int unsigned_enum = 1; | |
2175 | ||
2176 | type = coff_alloc_type (index); | |
2177 | if (within_function) | |
2178 | symlist = &local_symbols; | |
2179 | else | |
2180 | symlist = &file_symbols; | |
2181 | osyms = *symlist; | |
2182 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2183 | ||
2184 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2185 | { | |
2186 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2187 | name = ms->c_name; | |
5e2b427d | 2188 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2189 | |
2190 | switch (ms->c_sclass) | |
2191 | { | |
c5aa993b | 2192 | case C_MOE: |
e623cf5d | 2193 | sym = allocate_symbol (objfile); |
c5aa993b | 2194 | |
224c3ddb SM |
2195 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
2196 | strlen (name)); | |
2197 | SYMBOL_SET_LINKAGE_NAME (sym, name); | |
f1e6e072 | 2198 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2199 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2200 | SYMBOL_VALUE (sym) = ms->c_value; |
2201 | add_symbol_to_list (sym, symlist); | |
2202 | nsyms++; | |
2203 | break; | |
c906108c | 2204 | |
c5aa993b JM |
2205 | case C_EOS: |
2206 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2207 | up the count of how many symbols to read. So stop | |
2208 | on .eos. */ | |
2209 | done = 1; | |
2210 | break; | |
c906108c SS |
2211 | } |
2212 | } | |
2213 | ||
2214 | /* Now fill in the fields of the type-structure. */ | |
2215 | ||
2216 | if (length > 0) | |
2217 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2218 | else /* Assume ints. */ |
5e2b427d | 2219 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2220 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2221 | TYPE_NFIELDS (type) = nsyms; | |
2222 | TYPE_FIELDS (type) = (struct field *) | |
2223 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2224 | ||
2225 | /* Find the symbols for the values and put them into the type. | |
2226 | The symbols can be found in the symlist that we put them on | |
2227 | to cause them to be defined. osyms contains the old value | |
2228 | of that symlist; everything up to there was defined by us. */ | |
2229 | /* Note that we preserve the order of the enum constants, so | |
2230 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2231 | FOO, not LAST_THING. */ | |
2232 | ||
2233 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2234 | { | |
2235 | int j = 0; | |
2236 | ||
2237 | if (syms == osyms) | |
2238 | j = o_nsyms; | |
c5aa993b | 2239 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2240 | { |
2241 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2242 | |
c906108c | 2243 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2244 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2245 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2246 | if (SYMBOL_VALUE (xsym) < 0) |
2247 | unsigned_enum = 0; | |
2248 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2249 | } | |
2250 | if (syms == osyms) | |
2251 | break; | |
2252 | } | |
2253 | ||
2254 | if (unsigned_enum) | |
876cecd0 | 2255 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2256 | |
2257 | return type; | |
2258 | } | |
2259 | ||
aff410f1 | 2260 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2261 | |
00b5771c | 2262 | static const struct sym_fns coff_sym_fns = |
c906108c | 2263 | { |
aff410f1 MS |
2264 | coff_new_init, /* sym_new_init: init anything gbl to |
2265 | entire symtab */ | |
2266 | coff_symfile_init, /* sym_init: read initial info, setup | |
2267 | for sym_read() */ | |
2268 | coff_symfile_read, /* sym_read: read a symbol file into | |
2269 | symtab */ | |
b11896a5 | 2270 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2271 | coff_symfile_finish, /* sym_finish: finished with file, |
2272 | cleanup */ | |
2273 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2274 | internal form */ | |
2275 | default_symfile_segments, /* sym_segments: Get segment | |
2276 | information from a file */ | |
c295b2e5 | 2277 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2278 | |
2279 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2280 | section. */ | |
55aa24fb | 2281 | NULL, /* sym_probe_fns */ |
00b5771c | 2282 | &psym_functions |
c906108c SS |
2283 | }; |
2284 | ||
b8b98ad1 TT |
2285 | /* Free the per-objfile COFF data. */ |
2286 | ||
2287 | static void | |
2288 | coff_free_info (struct objfile *objfile, void *arg) | |
2289 | { | |
2290 | xfree (arg); | |
2291 | } | |
2292 | ||
c906108c | 2293 | void |
fba45db2 | 2294 | _initialize_coffread (void) |
c906108c | 2295 | { |
c256e171 | 2296 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 TT |
2297 | |
2298 | coff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
2299 | coff_free_info); | |
f1e6e072 TT |
2300 | |
2301 | coff_register_index | |
2302 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2303 | } |