Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
32d0add0 | 2 | Copyright (C) 1987-2015 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "demangle.h" | |
24 | #include "breakpoint.h" | |
25 | ||
26 | #include "bfd.h" | |
04ea0df1 | 27 | #include "gdb_obstack.h" |
c906108c SS |
28 | #include <ctype.h> |
29 | ||
30 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
31 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
c906108c SS |
32 | #include "objfiles.h" |
33 | #include "buildsym.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "stabsread.h" | |
36 | #include "complaints.h" | |
37 | #include "target.h" | |
fe898f56 | 38 | #include "block.h" |
de4f826b | 39 | #include "dictionary.h" |
c906108c | 40 | |
1b6bc7e0 CF |
41 | #include "coff-pe-read.h" |
42 | ||
ccefe4c4 | 43 | #include "psymtab.h" |
c74f7d1c | 44 | #include "build-id.h" |
ccefe4c4 | 45 | |
a14ed312 | 46 | extern void _initialize_coffread (void); |
392a587b | 47 | |
b8b98ad1 TT |
48 | /* Key for COFF-associated data. */ |
49 | ||
50 | static const struct objfile_data *coff_objfile_data_key; | |
51 | ||
91a81f69 TT |
52 | /* The objfile we are currently reading. */ |
53 | ||
dd707e8e | 54 | static struct objfile *coffread_objfile; |
91a81f69 | 55 | |
c5aa993b JM |
56 | struct coff_symfile_info |
57 | { | |
aff410f1 MS |
58 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
59 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 60 | |
aff410f1 MS |
61 | CORE_ADDR textaddr; /* Addr of .text section. */ |
62 | unsigned int textsize; /* Size of .text section. */ | |
c5aa993b | 63 | struct stab_section_list *stabsects; /* .stab sections. */ |
aff410f1 | 64 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
65 | char *stabstrdata; |
66 | }; | |
c906108c SS |
67 | |
68 | /* Translate an external name string into a user-visible name. */ | |
69 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
70 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
71 | ? string + 1 : string) | |
c906108c SS |
72 | |
73 | /* To be an sdb debug type, type must have at least a basic or primary | |
74 | derived type. Using this rather than checking against T_NULL is | |
75 | said to prevent core dumps if we try to operate on Michael Bloom | |
76 | dbx-in-coff file. */ | |
77 | ||
78 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
79 | ||
c906108c SS |
80 | /* Core address of start and end of text of current source file. |
81 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
82 | ||
83 | static CORE_ADDR current_source_start_addr; | |
84 | static CORE_ADDR current_source_end_addr; | |
85 | ||
86 | /* The addresses of the symbol table stream and number of symbols | |
87 | of the object file we are reading (as copied into core). */ | |
88 | ||
89 | static bfd *nlist_bfd_global; | |
90 | static int nlist_nsyms_global; | |
91 | ||
c906108c | 92 | |
aff410f1 MS |
93 | /* Pointers to scratch storage, used for reading raw symbols and |
94 | auxents. */ | |
c906108c SS |
95 | |
96 | static char *temp_sym; | |
97 | static char *temp_aux; | |
98 | ||
99 | /* Local variables that hold the shift and mask values for the | |
100 | COFF file that we are currently reading. These come back to us | |
101 | from BFD, and are referenced by their macro names, as well as | |
102 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
103 | macros from include/coff/internal.h . */ | |
104 | ||
c5aa993b JM |
105 | static unsigned local_n_btmask; |
106 | static unsigned local_n_btshft; | |
107 | static unsigned local_n_tmask; | |
108 | static unsigned local_n_tshift; | |
c906108c SS |
109 | |
110 | #define N_BTMASK local_n_btmask | |
111 | #define N_BTSHFT local_n_btshft | |
112 | #define N_TMASK local_n_tmask | |
113 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 114 | |
aff410f1 MS |
115 | /* Local variables that hold the sizes in the file of various COFF |
116 | structures. (We only need to know this to read them from the file | |
117 | -- BFD will then translate the data in them, into `internal_xxx' | |
118 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 119 | |
c5aa993b JM |
120 | static unsigned local_linesz; |
121 | static unsigned local_symesz; | |
122 | static unsigned local_auxesz; | |
c906108c SS |
123 | |
124 | /* This is set if this is a PE format file. */ | |
125 | ||
126 | static int pe_file; | |
127 | ||
128 | /* Chain of typedefs of pointers to empty struct/union types. | |
129 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
130 | ||
131 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
132 | ||
aff410f1 | 133 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 134 | |
c5aa993b JM |
135 | struct coff_symbol |
136 | { | |
137 | char *c_name; | |
aff410f1 MS |
138 | int c_symnum; /* Symbol number of this entry. */ |
139 | int c_naux; /* 0 if syment only, 1 if syment + | |
140 | auxent, etc. */ | |
5e8db398 | 141 | CORE_ADDR c_value; |
c5aa993b JM |
142 | int c_sclass; |
143 | int c_secnum; | |
144 | unsigned int c_type; | |
145 | }; | |
c906108c | 146 | |
fc474241 DE |
147 | /* Vector of types defined so far, indexed by their type numbers. */ |
148 | ||
149 | static struct type **type_vector; | |
150 | ||
151 | /* Number of elements allocated for type_vector currently. */ | |
152 | ||
153 | static int type_vector_length; | |
154 | ||
155 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
156 | realloc'd down to the size actually used, when completed. */ | |
157 | ||
158 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
159 | ||
a14ed312 | 160 | extern void stabsread_clear_cache (void); |
7be570e7 | 161 | |
5e2b427d UW |
162 | static struct type *coff_read_struct_type (int, int, int, |
163 | struct objfile *); | |
c906108c | 164 | |
a14ed312 | 165 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
166 | unsigned int, |
167 | union internal_auxent *, | |
5e2b427d | 168 | struct objfile *); |
c906108c | 169 | |
a14ed312 | 170 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
171 | union internal_auxent *, |
172 | struct objfile *); | |
c906108c | 173 | |
a14ed312 KB |
174 | static struct type *decode_function_type (struct coff_symbol *, |
175 | unsigned int, | |
5e2b427d UW |
176 | union internal_auxent *, |
177 | struct objfile *); | |
c906108c | 178 | |
5e2b427d UW |
179 | static struct type *coff_read_enum_type (int, int, int, |
180 | struct objfile *); | |
c906108c | 181 | |
a14ed312 KB |
182 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
183 | union internal_auxent *, | |
184 | struct objfile *); | |
c906108c | 185 | |
a14ed312 | 186 | static void patch_opaque_types (struct symtab *); |
c906108c | 187 | |
a14ed312 | 188 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 189 | |
a14ed312 | 190 | static void free_linetab (void); |
c906108c | 191 | |
74b7792f AC |
192 | static void free_linetab_cleanup (void *ignore); |
193 | ||
a14ed312 | 194 | static int init_lineno (bfd *, long, int); |
c906108c | 195 | |
a14ed312 | 196 | static char *getsymname (struct internal_syment *); |
c906108c | 197 | |
9f37bbcc | 198 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 199 | |
a14ed312 | 200 | static void free_stringtab (void); |
c906108c | 201 | |
74b7792f AC |
202 | static void free_stringtab_cleanup (void *ignore); |
203 | ||
a14ed312 | 204 | static int init_stringtab (bfd *, long); |
c906108c | 205 | |
a14ed312 | 206 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
207 | struct internal_syment *, |
208 | union internal_auxent *); | |
c906108c | 209 | |
a14ed312 | 210 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
211 | \f |
212 | /* We are called once per section from coff_symfile_read. We | |
213 | need to examine each section we are passed, check to see | |
214 | if it is something we are interested in processing, and | |
215 | if so, stash away some access information for the section. | |
216 | ||
217 | FIXME: The section names should not be hardwired strings (what | |
218 | should they be? I don't think most object file formats have enough | |
219 | section flags to specify what kind of debug section it is | |
220 | -kingdon). */ | |
221 | ||
222 | static void | |
12b9c64f | 223 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 224 | { |
52f0bd74 | 225 | struct coff_symfile_info *csi; |
c906108c SS |
226 | const char *name; |
227 | ||
228 | csi = (struct coff_symfile_info *) csip; | |
229 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 230 | if (strcmp (name, ".text") == 0) |
c906108c SS |
231 | { |
232 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
233 | csi->textsize += bfd_section_size (abfd, sectp); | |
234 | } | |
61012eef | 235 | else if (startswith (name, ".text")) |
c906108c SS |
236 | { |
237 | csi->textsize += bfd_section_size (abfd, sectp); | |
238 | } | |
7ecb6532 | 239 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
240 | { |
241 | csi->stabstrsect = sectp; | |
242 | } | |
61012eef | 243 | else if (startswith (name, ".stab")) |
c906108c SS |
244 | { |
245 | const char *s; | |
246 | ||
247 | /* We can have multiple .stab sections if linked with | |
248 | --split-by-reloc. */ | |
249 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 250 | if (!isdigit (*s)) |
c906108c SS |
251 | break; |
252 | if (*s == '\0') | |
253 | { | |
254 | struct stab_section_list *n, **pn; | |
255 | ||
8d749320 | 256 | n = XNEW (struct stab_section_list); |
c906108c SS |
257 | n->section = sectp; |
258 | n->next = NULL; | |
259 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
260 | ; | |
261 | *pn = n; | |
262 | ||
263 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
264 | in coff_symfile_read, at which point we no longer need |
265 | the information. */ | |
b8c9b27d | 266 | make_cleanup (xfree, n); |
c906108c SS |
267 | } |
268 | } | |
269 | } | |
270 | ||
271 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 272 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 273 | |
c5aa993b JM |
274 | struct find_targ_sec_arg |
275 | { | |
276 | int targ_index; | |
277 | asection **resultp; | |
278 | }; | |
c906108c | 279 | |
c5aa993b | 280 | static void |
12b9c64f | 281 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 282 | { |
c5aa993b | 283 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 284 | |
c906108c SS |
285 | if (sect->target_index == args->targ_index) |
286 | *args->resultp = sect; | |
287 | } | |
288 | ||
fbcebcb1 DJ |
289 | /* Return the bfd_section that CS points to. */ |
290 | static struct bfd_section* | |
291 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
292 | { |
293 | asection *sect = NULL; | |
294 | struct find_targ_sec_arg args; | |
c906108c SS |
295 | |
296 | args.targ_index = cs->c_secnum; | |
297 | args.resultp = § | |
298 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
299 | return sect; |
300 | } | |
301 | ||
302 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
303 | static int | |
304 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
305 | { | |
306 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 307 | |
05cfdb42 DJ |
308 | if (sect == NULL) |
309 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 310 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
311 | } |
312 | ||
313 | /* Return the address of the section of a COFF symbol. */ | |
314 | ||
a14ed312 | 315 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
316 | |
317 | static CORE_ADDR | |
fba45db2 | 318 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
319 | { |
320 | asection *sect = NULL; | |
321 | struct find_targ_sec_arg args; | |
322 | CORE_ADDR addr = 0; | |
323 | ||
324 | args.targ_index = cs->c_secnum; | |
325 | args.resultp = § | |
326 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
327 | if (sect != NULL) | |
81b9b86e | 328 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
329 | return addr; |
330 | } | |
331 | ||
332 | /* Look up a coff type-number index. Return the address of the slot | |
333 | where the type for that index is stored. | |
334 | The type-number is in INDEX. | |
335 | ||
336 | This can be used for finding the type associated with that index | |
337 | or for associating a new type with the index. */ | |
338 | ||
339 | static struct type ** | |
aa1ee363 | 340 | coff_lookup_type (int index) |
c906108c SS |
341 | { |
342 | if (index >= type_vector_length) | |
343 | { | |
344 | int old_vector_length = type_vector_length; | |
345 | ||
346 | type_vector_length *= 2; | |
c5aa993b | 347 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
348 | type_vector_length = index * 2; |
349 | ||
350 | type_vector = (struct type **) | |
351 | xrealloc ((char *) type_vector, | |
352 | type_vector_length * sizeof (struct type *)); | |
353 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 354 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
355 | } |
356 | return &type_vector[index]; | |
357 | } | |
358 | ||
359 | /* Make sure there is a type allocated for type number index | |
360 | and return the type object. | |
361 | This can create an empty (zeroed) type object. */ | |
362 | ||
363 | static struct type * | |
fba45db2 | 364 | coff_alloc_type (int index) |
c906108c | 365 | { |
52f0bd74 AC |
366 | struct type **type_addr = coff_lookup_type (index); |
367 | struct type *type = *type_addr; | |
c906108c SS |
368 | |
369 | /* If we are referring to a type not known at all yet, | |
370 | allocate an empty type for it. | |
371 | We will fill it in later if we find out how. */ | |
372 | if (type == NULL) | |
373 | { | |
dd707e8e | 374 | type = alloc_type (coffread_objfile); |
c906108c SS |
375 | *type_addr = type; |
376 | } | |
377 | return type; | |
378 | } | |
379 | \f | |
c906108c SS |
380 | /* Start a new symtab for a new source file. |
381 | This is called when a COFF ".file" symbol is seen; | |
382 | it indicates the start of data for one original source file. */ | |
383 | ||
384 | static void | |
4d663531 | 385 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 386 | { |
4d663531 | 387 | start_symtab (objfile, |
aff410f1 MS |
388 | /* We fill in the filename later. start_symtab puts this pointer |
389 | into last_source_file and we put it in subfiles->name, which | |
390 | end_symtab frees; that's why it must be malloc'd. */ | |
1b36a34b | 391 | xstrdup (name), |
c5aa993b JM |
392 | /* We never know the directory name for COFF. */ |
393 | NULL, | |
394 | /* The start address is irrelevant, since we set | |
395 | last_source_start_addr in coff_end_symtab. */ | |
396 | 0); | |
c906108c | 397 | record_debugformat ("COFF"); |
c906108c SS |
398 | } |
399 | ||
400 | /* Save the vital information from when starting to read a file, | |
401 | for use when closing off the current file. | |
aff410f1 MS |
402 | NAME is the file name the symbols came from, START_ADDR is the |
403 | first text address for the file, and SIZE is the number of bytes of | |
404 | text. */ | |
c906108c SS |
405 | |
406 | static void | |
9f37bbcc | 407 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 408 | { |
46212e0b | 409 | set_last_source_file (name); |
c906108c SS |
410 | current_source_start_addr = start_addr; |
411 | current_source_end_addr = start_addr + size; | |
c906108c SS |
412 | } |
413 | ||
aff410f1 MS |
414 | /* Finish the symbol definitions for one main source file, close off |
415 | all the lexical contexts for that file (creating struct block's for | |
416 | them), then make the struct symtab for that file and put it in the | |
417 | list of all such. */ | |
c906108c SS |
418 | |
419 | static void | |
fba45db2 | 420 | coff_end_symtab (struct objfile *objfile) |
c906108c | 421 | { |
c906108c SS |
422 | last_source_start_addr = current_source_start_addr; |
423 | ||
4d663531 | 424 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 425 | |
aff410f1 | 426 | /* Reinitialize for beginning of new file. */ |
46212e0b | 427 | set_last_source_file (NULL); |
c906108c SS |
428 | } |
429 | \f | |
af312be7 JB |
430 | /* The linker sometimes generates some non-function symbols inside |
431 | functions referencing variables imported from another DLL. | |
432 | Return nonzero if the given symbol corresponds to one of them. */ | |
433 | ||
434 | static int | |
435 | is_import_fixup_symbol (struct coff_symbol *cs, | |
436 | enum minimal_symbol_type type) | |
437 | { | |
438 | /* The following is a bit of a heuristic using the characterictics | |
439 | of these fixup symbols, but should work well in practice... */ | |
440 | int i; | |
441 | ||
442 | /* Must be a non-static text symbol. */ | |
443 | if (type != mst_text) | |
444 | return 0; | |
445 | ||
446 | /* Must be a non-function symbol. */ | |
447 | if (ISFCN (cs->c_type)) | |
448 | return 0; | |
449 | ||
450 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 451 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
452 | return 0; |
453 | if (! isdigit (cs->c_name[4])) | |
454 | return 0; | |
455 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
456 | /* Nothing, just incrementing index past all digits. */; | |
457 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
458 | return 0; | |
459 | ||
460 | return 1; | |
461 | } | |
462 | ||
fbcebcb1 DJ |
463 | static struct minimal_symbol * |
464 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
465 | enum minimal_symbol_type type, int section, | |
466 | struct objfile *objfile) | |
c906108c | 467 | { |
aff410f1 | 468 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
469 | if (cs->c_name[0] == '@') |
470 | return NULL; | |
c906108c | 471 | |
af312be7 JB |
472 | if (is_import_fixup_symbol (cs, type)) |
473 | { | |
474 | /* Because the value of these symbols is within a function code | |
475 | range, these symbols interfere with the symbol-from-address | |
476 | reverse lookup; this manifests itselfs in backtraces, or any | |
477 | other commands that prints symbolic addresses. Just pretend | |
478 | these symbols do not exist. */ | |
479 | return NULL; | |
480 | } | |
481 | ||
aff410f1 | 482 | return prim_record_minimal_symbol_and_info (cs->c_name, address, |
e6dc44a8 | 483 | type, section, objfile); |
c906108c SS |
484 | } |
485 | \f | |
486 | /* coff_symfile_init () | |
487 | is the coff-specific initialization routine for reading symbols. | |
488 | It is passed a struct objfile which contains, among other things, | |
489 | the BFD for the file whose symbols are being read, and a slot for | |
490 | a pointer to "private data" which we fill with cookies and other | |
491 | treats for coff_symfile_read (). | |
492 | ||
aff410f1 MS |
493 | We will only be called if this is a COFF or COFF-like file. BFD |
494 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
495 | uses BFD's determination to vector to us. |
496 | ||
aff410f1 MS |
497 | The ultimate result is a new symtab (or, FIXME, eventually a |
498 | psymtab). */ | |
c906108c SS |
499 | |
500 | static void | |
fba45db2 | 501 | coff_symfile_init (struct objfile *objfile) |
c906108c | 502 | { |
d2f4b8fe | 503 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 504 | struct coff_symfile_info *coff; |
c906108c | 505 | |
d2f4b8fe TT |
506 | /* Allocate struct to keep track of stab reading. */ |
507 | dbx = XCNEW (struct dbx_symfile_info); | |
508 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 509 | |
aff410f1 | 510 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
511 | coff = XCNEW (struct coff_symfile_info); |
512 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
513 | |
514 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
515 | find this causes a significant slowdown in gdb then we could | |
516 | set it in the debug symbol readers only when necessary. */ | |
517 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
518 | } |
519 | ||
aff410f1 MS |
520 | /* This function is called for every section; it finds the outer |
521 | limits of the line table (minimum and maximum file offset) so that | |
522 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 523 | |
c906108c | 524 | static void |
7be0c536 | 525 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
526 | { |
527 | struct coff_symfile_info *info; | |
528 | int size, count; | |
529 | file_ptr offset, maxoff; | |
530 | ||
aff410f1 | 531 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 532 | count = asect->lineno_count; |
aff410f1 | 533 | /* End of warning. */ |
c906108c SS |
534 | |
535 | if (count == 0) | |
536 | return; | |
537 | size = count * local_linesz; | |
538 | ||
c5aa993b | 539 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 540 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 541 | offset = asect->line_filepos; |
aff410f1 | 542 | /* End of warning. */ |
c906108c SS |
543 | |
544 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
545 | info->min_lineno_offset = offset; | |
546 | ||
547 | maxoff = offset + size; | |
548 | if (maxoff > info->max_lineno_offset) | |
549 | info->max_lineno_offset = maxoff; | |
550 | } | |
551 | ||
552 | ||
553 | /* The BFD for this file -- only good while we're actively reading | |
554 | symbols into a psymtab or a symtab. */ | |
555 | ||
556 | static bfd *symfile_bfd; | |
557 | ||
558 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
559 | ||
c906108c | 560 | static void |
f4352531 | 561 | coff_symfile_read (struct objfile *objfile, int symfile_flags) |
c906108c SS |
562 | { |
563 | struct coff_symfile_info *info; | |
564 | struct dbx_symfile_info *dbxinfo; | |
565 | bfd *abfd = objfile->obfd; | |
566 | coff_data_type *cdata = coff_data (abfd); | |
567 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 568 | int val; |
745b8ca0 | 569 | unsigned int num_symbols; |
c906108c SS |
570 | int symtab_offset; |
571 | int stringtab_offset; | |
7134143f | 572 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 573 | int stabstrsize; |
c2d11a7d | 574 | |
b8b98ad1 | 575 | info = objfile_data (objfile, coff_objfile_data_key); |
d2f4b8fe | 576 | dbxinfo = DBX_SYMFILE_INFO (objfile); |
aff410f1 | 577 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c SS |
578 | |
579 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
580 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
581 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
582 | stringtab_offset = symtab_offset + /* String table file offset */ | |
583 | num_symbols * cdata->local_symesz; | |
c906108c SS |
584 | |
585 | /* Set a few file-statics that give us specific information about | |
586 | the particular COFF file format we're reading. */ | |
c906108c SS |
587 | local_n_btmask = cdata->local_n_btmask; |
588 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 589 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 590 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
591 | local_linesz = cdata->local_linesz; |
592 | local_symesz = cdata->local_symesz; | |
593 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
594 | |
595 | /* Allocate space for raw symbol and aux entries, based on their | |
596 | space requirements as reported by BFD. */ | |
597 | temp_sym = (char *) xmalloc | |
c5aa993b | 598 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 599 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 600 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
601 | |
602 | /* We need to know whether this is a PE file, because in PE files, | |
603 | unlike standard COFF files, symbol values are stored as offsets | |
604 | from the section address, rather than as absolute addresses. | |
605 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
606 | this problem. */ | |
0d06e24b | 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 SS |
648 | |
649 | init_minimal_symbol_collection (); | |
7134143f | 650 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
651 | |
652 | /* Now that the executable file is positioned at symbol table, | |
653 | process it and define symbols accordingly. */ | |
654 | ||
96baa820 | 655 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 656 | |
aff410f1 MS |
657 | /* Install any minimal symbols that have been collected as the |
658 | current minimal symbols for this objfile. */ | |
c906108c SS |
659 | |
660 | install_minimal_symbols (objfile); | |
661 | ||
303c5ee1 YQ |
662 | if (pe_file) |
663 | { | |
664 | struct minimal_symbol *msym; | |
665 | ||
666 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
667 | { | |
efd66ac6 | 668 | const char *name = MSYMBOL_LINKAGE_NAME (msym); |
303c5ee1 YQ |
669 | |
670 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
671 | or "_imp_", get rid of the prefix, and search the minimal | |
672 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
673 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
20d35291 | 674 | if (MSYMBOL_TYPE (msym) == mst_data) |
303c5ee1 | 675 | { |
20d35291 PA |
676 | const char *name1 = NULL; |
677 | ||
678 | if (startswith (name, "_imp_")) | |
679 | name1 = name + 5; | |
680 | else if (startswith (name, "__imp_")) | |
681 | name1 = name + 6; | |
682 | if (name1 != NULL) | |
683 | { | |
684 | int lead = bfd_get_symbol_leading_char (objfile->obfd); | |
685 | struct bound_minimal_symbol found; | |
686 | ||
687 | if (lead != '\0' && *name1 == lead) | |
688 | name1 += 1; | |
689 | ||
690 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
691 | ||
692 | /* If found, there are symbols named "_imp_foo" and "foo" | |
693 | respectively in OBJFILE. Set the type of symbol "foo" | |
694 | as 'mst_solib_trampoline'. */ | |
695 | if (found.minsym != NULL | |
696 | && MSYMBOL_TYPE (found.minsym) == mst_text) | |
697 | MSYMBOL_TYPE (found.minsym) = mst_solib_trampoline; | |
698 | } | |
303c5ee1 YQ |
699 | } |
700 | } | |
701 | } | |
702 | ||
7134143f DJ |
703 | /* Free the installed minimal symbol data. */ |
704 | do_cleanups (cleanup_minimal_symbols); | |
705 | ||
12b9c64f | 706 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
707 | |
708 | if (info->stabsects) | |
709 | { | |
c5aa993b | 710 | if (!info->stabstrsect) |
b83266a0 | 711 | { |
3e43a32a MS |
712 | error (_("The debugging information in `%s' is corrupted.\nThe " |
713 | "file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 714 | name); |
b83266a0 SS |
715 | } |
716 | ||
c906108c | 717 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 718 | bfd_get_section_contents? */ |
c906108c SS |
719 | bfd_seek (abfd, abfd->where, 0); |
720 | ||
721 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
722 | ||
723 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
724 | info->textaddr, info->textsize, |
725 | info->stabsects, | |
726 | info->stabstrsect->filepos, stabstrsize); | |
727 | } | |
251d32d9 | 728 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
729 | { |
730 | /* DWARF2 sections. */ | |
f29dff0a | 731 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 732 | } |
c906108c | 733 | |
fea25152 BF |
734 | dwarf2_build_frame_info (objfile); |
735 | ||
9cce227f TG |
736 | /* Try to add separate debug file if no symbols table found. */ |
737 | if (!objfile_has_partial_symbols (objfile)) | |
738 | { | |
739 | char *debugfile; | |
740 | ||
c74f7d1c JT |
741 | debugfile = find_separate_debug_file_by_buildid (objfile); |
742 | ||
743 | if (debugfile == NULL) | |
744 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
8ac244b4 | 745 | make_cleanup (xfree, debugfile); |
9cce227f TG |
746 | |
747 | if (debugfile) | |
748 | { | |
749 | bfd *abfd = symfile_bfd_open (debugfile); | |
c5504eaf | 750 | |
8ac244b4 | 751 | make_cleanup_bfd_unref (abfd); |
24ba069a | 752 | symbol_file_add_separate (abfd, debugfile, symfile_flags, objfile); |
9cce227f TG |
753 | } |
754 | } | |
755 | ||
c906108c SS |
756 | do_cleanups (back_to); |
757 | } | |
758 | ||
759 | static void | |
fba45db2 | 760 | coff_new_init (struct objfile *ignore) |
c906108c SS |
761 | { |
762 | } | |
763 | ||
aff410f1 MS |
764 | /* Perform any local cleanups required when we are done with a |
765 | particular objfile. I.E, we are in the process of discarding all | |
766 | symbol information for an objfile, freeing up all memory held for | |
767 | it, and unlinking the objfile struct from the global list of known | |
768 | objfiles. */ | |
c906108c SS |
769 | |
770 | static void | |
fba45db2 | 771 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 772 | { |
aff410f1 | 773 | /* Let stabs reader clean up. */ |
7be570e7 | 774 | stabsread_clear_cache (); |
fe3e1990 DJ |
775 | |
776 | dwarf2_free_objfile (objfile); | |
c906108c | 777 | } |
c906108c | 778 | \f |
c5aa993b | 779 | |
c906108c SS |
780 | /* Given pointers to a symbol table in coff style exec file, |
781 | analyze them and create struct symtab's describing the symbols. | |
782 | NSYMS is the number of symbols in the symbol table. | |
783 | We read them one at a time using read_one_sym (). */ | |
784 | ||
785 | static void | |
fba45db2 KB |
786 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
787 | struct objfile *objfile) | |
c906108c | 788 | { |
5e2b427d | 789 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 790 | struct context_stack *newobj; |
c906108c | 791 | struct coff_symbol coff_symbol; |
52f0bd74 | 792 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
793 | static struct internal_syment main_sym; |
794 | static union internal_auxent main_aux; | |
795 | struct coff_symbol fcn_cs_saved; | |
796 | static struct internal_syment fcn_sym_saved; | |
797 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
798 | /* A .file is open. */ |
799 | int in_source_file = 0; | |
800 | int next_file_symnum = -1; | |
801 | /* Name of the current file. */ | |
9f37bbcc | 802 | const char *filestring = ""; |
c906108c SS |
803 | int depth = 0; |
804 | int fcn_first_line = 0; | |
b9179dbc | 805 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
806 | int fcn_last_line = 0; |
807 | int fcn_start_addr = 0; | |
808 | long fcn_line_ptr = 0; | |
809 | int val; | |
810 | CORE_ADDR tmpaddr; | |
05cfdb42 | 811 | struct minimal_symbol *msym; |
c906108c SS |
812 | |
813 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
aff410f1 MS |
814 | it's hard to know I've really worked around it. The fix should |
815 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
816 | fread (in read_one_sym), will (in my example) actually get data |
817 | from file offset 268, when the fseek was to 264 (and ftell shows | |
818 | 264). This causes all hell to break loose. I was unable to | |
819 | reproduce this on a short test program which operated on the same | |
820 | file, performing (I think) the same sequence of operations. | |
821 | ||
822 | It stopped happening when I put in this (former) rewind(). | |
823 | ||
824 | FIXME: Find out if this has been reported to Sun, whether it has | |
825 | been fixed in a later release, etc. */ | |
826 | ||
827 | bfd_seek (objfile->obfd, 0, 0); | |
828 | ||
aff410f1 | 829 | /* Position to read the symbol table. */ |
c906108c SS |
830 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
831 | if (val < 0) | |
4262abfb | 832 | perror_with_name (objfile_name (objfile)); |
c906108c | 833 | |
dd707e8e | 834 | coffread_objfile = objfile; |
c906108c SS |
835 | nlist_bfd_global = objfile->obfd; |
836 | nlist_nsyms_global = nsyms; | |
46212e0b | 837 | set_last_source_file (NULL); |
c906108c SS |
838 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
839 | ||
aff410f1 | 840 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 841 | xfree (type_vector); |
fc474241 | 842 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 843 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 844 | |
4d663531 | 845 | coff_start_symtab (objfile, ""); |
c906108c SS |
846 | |
847 | symnum = 0; | |
848 | while (symnum < nsyms) | |
849 | { | |
850 | QUIT; /* Make this command interruptable. */ | |
851 | ||
852 | read_one_sym (cs, &main_sym, &main_aux); | |
853 | ||
854 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
855 | { | |
46212e0b | 856 | if (get_last_source_file ()) |
c906108c SS |
857 | coff_end_symtab (objfile); |
858 | ||
4d663531 | 859 | coff_start_symtab (objfile, "_globals_"); |
969107c5 EZ |
860 | /* coff_start_symtab will set the language of this symtab to |
861 | language_unknown, since such a ``file name'' is not | |
862 | recognized. Override that with the minimal language to | |
863 | allow printing values in this symtab. */ | |
864 | current_subfile->language = language_minimal; | |
c906108c | 865 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
866 | /* Done with all files, everything from here on out is |
867 | globals. */ | |
c906108c SS |
868 | } |
869 | ||
aff410f1 MS |
870 | /* Special case for file with type declarations only, no |
871 | text. */ | |
46212e0b | 872 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
873 | && cs->c_secnum == N_DEBUG) |
874 | complete_symtab (filestring, 0, 0); | |
875 | ||
876 | /* Typedefs should not be treated as symbol definitions. */ | |
877 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
878 | { | |
aff410f1 MS |
879 | /* Record all functions -- external and static -- in |
880 | minsyms. */ | |
fbcebcb1 | 881 | int section = cs_to_section (cs, objfile); |
c5504eaf | 882 | |
2273f0ac | 883 | tmpaddr = cs->c_value; |
aff410f1 MS |
884 | record_minimal_symbol (cs, tmpaddr, mst_text, |
885 | section, objfile); | |
c906108c SS |
886 | |
887 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
888 | fcn_start_addr = tmpaddr; | |
889 | fcn_cs_saved = *cs; | |
890 | fcn_sym_saved = main_sym; | |
891 | fcn_aux_saved = main_aux; | |
892 | continue; | |
893 | } | |
894 | ||
895 | switch (cs->c_sclass) | |
896 | { | |
c5aa993b JM |
897 | case C_EFCN: |
898 | case C_EXTDEF: | |
899 | case C_ULABEL: | |
900 | case C_USTATIC: | |
901 | case C_LINE: | |
902 | case C_ALIAS: | |
903 | case C_HIDDEN: | |
aff410f1 MS |
904 | complaint (&symfile_complaints, |
905 | _("Bad n_sclass for symbol %s"), | |
23136709 | 906 | cs->c_name); |
c5aa993b | 907 | break; |
c906108c | 908 | |
c5aa993b | 909 | case C_FILE: |
aff410f1 MS |
910 | /* c_value field contains symnum of next .file entry in |
911 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
912 | next_file_symnum = cs->c_value; |
913 | if (cs->c_naux > 0) | |
914 | filestring = coff_getfilename (&main_aux); | |
915 | else | |
916 | filestring = ""; | |
917 | ||
918 | /* Complete symbol table for last object file | |
919 | containing debugging information. */ | |
46212e0b | 920 | if (get_last_source_file ()) |
c5aa993b JM |
921 | { |
922 | coff_end_symtab (objfile); | |
4d663531 | 923 | coff_start_symtab (objfile, filestring); |
c5aa993b JM |
924 | } |
925 | in_source_file = 1; | |
926 | break; | |
c906108c | 927 | |
aff410f1 MS |
928 | /* C_LABEL is used for labels and static functions. |
929 | Including it here allows gdb to see static functions when | |
930 | no debug info is available. */ | |
c5aa993b | 931 | case C_LABEL: |
aff410f1 MS |
932 | /* However, labels within a function can make weird |
933 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
934 | if (within_function) |
935 | break; | |
936 | case C_STAT: | |
937 | case C_THUMBLABEL: | |
938 | case C_THUMBSTAT: | |
939 | case C_THUMBSTATFUNC: | |
940 | if (cs->c_name[0] == '.') | |
941 | { | |
7ecb6532 | 942 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 943 | { |
aff410f1 MS |
944 | /* FIXME: don't wire in ".text" as section name or |
945 | symbol name! */ | |
946 | /* Check for in_source_file deals with case of a | |
947 | file with debugging symbols followed by a later | |
948 | file with no symbols. */ | |
c906108c SS |
949 | if (in_source_file) |
950 | complete_symtab (filestring, | |
aff410f1 MS |
951 | cs->c_value + ANOFFSET (objfile->section_offsets, |
952 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
953 | main_aux.x_scn.x_scnlen); |
954 | in_source_file = 0; | |
955 | } | |
aff410f1 | 956 | /* Flush rest of '.' symbols. */ |
c906108c | 957 | break; |
c5aa993b JM |
958 | } |
959 | else if (!SDB_TYPE (cs->c_type) | |
960 | && cs->c_name[0] == 'L' | |
61012eef GB |
961 | && (startswith (cs->c_name, "LI%") |
962 | || startswith (cs->c_name, "LF%") | |
963 | || startswith (cs->c_name, "LC%") | |
964 | || startswith (cs->c_name, "LP%") | |
965 | || startswith (cs->c_name, "LPB%") | |
966 | || startswith (cs->c_name, "LBB%") | |
967 | || startswith (cs->c_name, "LBE%") | |
968 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
969 | /* At least on a 3b1, gcc generates swbeg and string labels |
970 | that look like this. Ignore them. */ | |
971 | break; | |
aff410f1 | 972 | /* Fall in for static symbols that don't start with '.' */ |
c5aa993b JM |
973 | case C_THUMBEXT: |
974 | case C_THUMBEXTFUNC: | |
975 | case C_EXT: | |
976 | { | |
977 | /* Record it in the minimal symbols regardless of | |
978 | SDB_TYPE. This parallels what we do for other debug | |
979 | formats, and probably is needed to make | |
980 | print_address_symbolic work right without the (now | |
981 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 982 | |
c5aa993b JM |
983 | enum minimal_symbol_type ms_type; |
984 | int sec; | |
2273f0ac | 985 | CORE_ADDR offset = 0; |
c906108c | 986 | |
c5aa993b JM |
987 | if (cs->c_secnum == N_UNDEF) |
988 | { | |
d4862372 JB |
989 | /* This is a common symbol. We used to rely on |
990 | the target to tell us whether it knows where | |
991 | the symbol has been relocated to, but none of | |
992 | the target implementations actually provided | |
993 | that operation. So we just ignore the symbol, | |
994 | the same way we would do if we had a target-side | |
995 | symbol lookup which returned no match. */ | |
996 | break; | |
c5aa993b | 997 | } |
182d43bc EZ |
998 | else if (cs->c_secnum == N_ABS) |
999 | { | |
1000 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 1001 | relocate) for absolute values. */ |
182d43bc EZ |
1002 | ms_type = mst_abs; |
1003 | sec = cs_to_section (cs, objfile); | |
1004 | tmpaddr = cs->c_value; | |
1005 | } | |
c5aa993b JM |
1006 | else |
1007 | { | |
05cfdb42 | 1008 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 1009 | |
c5aa993b JM |
1010 | sec = cs_to_section (cs, objfile); |
1011 | tmpaddr = cs->c_value; | |
aff410f1 | 1012 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
1013 | if (cs->c_sclass == C_EXT |
1014 | || cs->c_sclass == C_THUMBEXTFUNC | |
1015 | || cs->c_sclass == C_THUMBEXT | |
1016 | || (pe_file && (cs->c_sclass == C_STAT))) | |
2273f0ac | 1017 | offset = ANOFFSET (objfile->section_offsets, sec); |
c906108c | 1018 | |
05cfdb42 | 1019 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 1020 | { |
c5aa993b JM |
1021 | ms_type = |
1022 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
1023 | || cs->c_sclass == C_THUMBEXT ? | |
1024 | mst_text : mst_file_text; | |
85ddcc70 | 1025 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 1026 | } |
05cfdb42 DJ |
1027 | else if (bfd_section->flags & SEC_ALLOC |
1028 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1029 | { |
c5aa993b | 1030 | ms_type = |
aff410f1 MS |
1031 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1032 | ? mst_data : mst_file_data; | |
34e924c0 | 1033 | } |
05cfdb42 | 1034 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1035 | { |
c5aa993b | 1036 | ms_type = |
aff410f1 MS |
1037 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1038 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1039 | } |
1040 | else | |
1041 | ms_type = mst_unknown; | |
c5aa993b | 1042 | } |
c906108c | 1043 | |
aff410f1 MS |
1044 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, |
1045 | sec, objfile); | |
05cfdb42 | 1046 | if (msym) |
aff410f1 MS |
1047 | gdbarch_coff_make_msymbol_special (gdbarch, |
1048 | cs->c_sclass, msym); | |
fbcebcb1 | 1049 | |
c5aa993b JM |
1050 | if (SDB_TYPE (cs->c_type)) |
1051 | { | |
1052 | struct symbol *sym; | |
c5504eaf | 1053 | |
c5aa993b | 1054 | sym = process_coff_symbol |
96baa820 | 1055 | (cs, &main_aux, objfile); |
2273f0ac | 1056 | SYMBOL_VALUE (sym) = tmpaddr + offset; |
c5aa993b JM |
1057 | SYMBOL_SECTION (sym) = sec; |
1058 | } | |
1059 | } | |
1060 | break; | |
1061 | ||
1062 | case C_FCN: | |
7ecb6532 | 1063 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1064 | { |
1065 | within_function = 1; | |
1066 | ||
aff410f1 MS |
1067 | /* Value contains address of first non-init type |
1068 | code. */ | |
c5aa993b | 1069 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1070 | contains line number of '{' }. */ |
c5aa993b | 1071 | if (cs->c_naux != 1) |
23136709 | 1072 | complaint (&symfile_complaints, |
aff410f1 MS |
1073 | _("`.bf' symbol %d has no aux entry"), |
1074 | cs->c_symnum); | |
c5aa993b JM |
1075 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1076 | fcn_first_line_addr = cs->c_value; | |
1077 | ||
1078 | /* Might want to check that locals are 0 and | |
1079 | context_stack_depth is zero, and complain if not. */ | |
1080 | ||
1081 | depth = 0; | |
fe978cb0 | 1082 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1083 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1084 | newobj->name = |
aff410f1 MS |
1085 | process_coff_symbol (&fcn_cs_saved, |
1086 | &fcn_aux_saved, objfile); | |
c5aa993b | 1087 | } |
7ecb6532 | 1088 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1089 | { |
b9179dbc | 1090 | if (!within_function) |
8a3fe4f8 | 1091 | error (_("Bad coff function information.")); |
aff410f1 | 1092 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1093 | not useful for gdb. */ |
1094 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1095 | contains number of lines to '}' */ | |
1096 | ||
1097 | if (context_stack_depth <= 0) | |
aff410f1 | 1098 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1099 | complaint (&symfile_complaints, |
3e43a32a MS |
1100 | _("`.ef' symbol without matching `.bf' " |
1101 | "symbol ignored starting at symnum %d"), | |
23136709 | 1102 | cs->c_symnum); |
c5aa993b JM |
1103 | within_function = 0; |
1104 | break; | |
c906108c | 1105 | } |
c5aa993b | 1106 | |
fe978cb0 | 1107 | newobj = pop_context (); |
c5aa993b | 1108 | /* Stack must be empty now. */ |
fe978cb0 | 1109 | if (context_stack_depth > 0 || newobj == NULL) |
c906108c | 1110 | { |
23136709 | 1111 | complaint (&symfile_complaints, |
3e43a32a MS |
1112 | _("Unmatched .ef symbol(s) ignored " |
1113 | "starting at symnum %d"), | |
23136709 | 1114 | cs->c_symnum); |
c5aa993b JM |
1115 | within_function = 0; |
1116 | break; | |
c906108c | 1117 | } |
c5aa993b JM |
1118 | if (cs->c_naux != 1) |
1119 | { | |
23136709 | 1120 | complaint (&symfile_complaints, |
aff410f1 MS |
1121 | _("`.ef' symbol %d has no aux entry"), |
1122 | cs->c_symnum); | |
c5aa993b JM |
1123 | fcn_last_line = 0x7FFFFFFF; |
1124 | } | |
1125 | else | |
1126 | { | |
1127 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1128 | } | |
1129 | /* fcn_first_line is the line number of the opening '{'. | |
1130 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1131 | of the line number of the first statement of the |
1132 | function - except for one-line functions, for which | |
1133 | it is also the line number of all the statements and | |
1134 | of the closing '}', and for which we do not have any | |
1135 | other statement-line-number. */ | |
c5aa993b JM |
1136 | if (fcn_last_line == 1) |
1137 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1138 | gdbarch_addr_bits_remove (gdbarch, |
1139 | fcn_first_line_addr)); | |
c5aa993b | 1140 | else |
aff410f1 MS |
1141 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1142 | fcn_last_line, objfile); | |
c906108c | 1143 | |
63e43d3a PMR |
1144 | finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
1145 | NULL, newobj->start_addr, | |
c5aa993b JM |
1146 | fcn_cs_saved.c_value |
1147 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 | 1148 | + ANOFFSET (objfile->section_offsets, |
4d663531 | 1149 | SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1150 | within_function = 0; |
1151 | } | |
1152 | break; | |
c906108c | 1153 | |
c5aa993b | 1154 | case C_BLOCK: |
7ecb6532 | 1155 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1156 | { |
1157 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1158 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1159 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1160 | push_context (++depth, tmpaddr); |
1161 | } | |
7ecb6532 | 1162 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1163 | { |
1164 | if (context_stack_depth <= 0) | |
0963b4bd | 1165 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1166 | complaint (&symfile_complaints, |
3e43a32a MS |
1167 | _("`.eb' symbol without matching `.bb' " |
1168 | "symbol ignored starting at symnum %d"), | |
23136709 | 1169 | cs->c_symnum); |
c5aa993b JM |
1170 | break; |
1171 | } | |
c906108c | 1172 | |
fe978cb0 PA |
1173 | newobj = pop_context (); |
1174 | if (depth-- != newobj->depth) | |
c5aa993b | 1175 | { |
3e43a32a MS |
1176 | complaint (&symfile_complaints, |
1177 | _("Mismatched .eb symbol ignored " | |
1178 | "starting at symnum %d"), | |
23136709 | 1179 | symnum); |
c5aa993b JM |
1180 | break; |
1181 | } | |
1182 | if (local_symbols && context_stack_depth > 0) | |
1183 | { | |
1184 | tmpaddr = | |
aff410f1 MS |
1185 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1186 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1187 | /* Make a block for the local symbols within. */ |
63e43d3a | 1188 | finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 1189 | newobj->start_addr, tmpaddr); |
c5aa993b JM |
1190 | } |
1191 | /* Now pop locals of block just finished. */ | |
fe978cb0 | 1192 | local_symbols = newobj->locals; |
c5aa993b JM |
1193 | } |
1194 | break; | |
c906108c | 1195 | |
c5aa993b | 1196 | default: |
96baa820 | 1197 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1198 | break; |
c906108c SS |
1199 | } |
1200 | } | |
1201 | ||
1b6bc7e0 CF |
1202 | if ((nsyms == 0) && (pe_file)) |
1203 | { | |
c2f20dd6 | 1204 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1205 | executable, so try to read the export table. */ |
1b6bc7e0 CF |
1206 | read_pe_exported_syms (objfile); |
1207 | } | |
1208 | ||
46212e0b | 1209 | if (get_last_source_file ()) |
c906108c SS |
1210 | coff_end_symtab (objfile); |
1211 | ||
1212 | /* Patch up any opaque types (references to types that are not defined | |
1213 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 DE |
1214 | { |
1215 | struct compunit_symtab *cu; | |
1216 | struct symtab *s; | |
1217 | ||
1218 | ALL_OBJFILE_FILETABS (objfile, cu, s) | |
1219 | patch_opaque_types (s); | |
1220 | } | |
c906108c | 1221 | |
dd707e8e | 1222 | coffread_objfile = NULL; |
c906108c SS |
1223 | } |
1224 | \f | |
1225 | /* Routines for reading headers and symbols from executable. */ | |
1226 | ||
aff410f1 MS |
1227 | /* Read the next symbol, swap it, and return it in both |
1228 | internal_syment form, and coff_symbol form. Also return its first | |
1229 | auxent, if any, in internal_auxent form, and skip any other | |
1230 | auxents. */ | |
c906108c SS |
1231 | |
1232 | static void | |
aa1ee363 AC |
1233 | read_one_sym (struct coff_symbol *cs, |
1234 | struct internal_syment *sym, | |
1235 | union internal_auxent *aux) | |
c906108c SS |
1236 | { |
1237 | int i; | |
3b016d57 | 1238 | bfd_size_type bytes; |
c906108c SS |
1239 | |
1240 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1241 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1242 | if (bytes != local_symesz) | |
4262abfb | 1243 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1244 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1245 | cs->c_naux = sym->n_numaux & 0xff; |
1246 | if (cs->c_naux >= 1) | |
1247 | { | |
3b016d57 DJ |
1248 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1249 | if (bytes != local_auxesz) | |
4262abfb | 1250 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1251 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1252 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1253 | 0, cs->c_naux, (char *) aux); |
1254 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1255 | is important). */ |
c5aa993b | 1256 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1257 | { |
1258 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1259 | if (bytes != local_auxesz) | |
4262abfb JK |
1260 | error (_("%s: error reading symbols"), |
1261 | objfile_name (coffread_objfile)); | |
3b016d57 | 1262 | } |
c906108c SS |
1263 | } |
1264 | cs->c_name = getsymname (sym); | |
1265 | cs->c_value = sym->n_value; | |
1266 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1267 | cs->c_secnum = sym->n_scnum; | |
1268 | cs->c_type = (unsigned) sym->n_type; | |
1269 | if (!SDB_TYPE (cs->c_type)) | |
1270 | cs->c_type = 0; | |
1271 | ||
1272 | #if 0 | |
1273 | if (cs->c_sclass & 128) | |
3d263c1d | 1274 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1275 | #endif |
1276 | ||
1277 | symnum += 1 + cs->c_naux; | |
1278 | ||
1279 | /* The PE file format stores symbol values as offsets within the | |
1280 | section, rather than as absolute addresses. We correct that | |
1281 | here, if the symbol has an appropriate storage class. FIXME: We | |
1282 | should use BFD to read the symbols, rather than duplicating the | |
1283 | work here. */ | |
1284 | if (pe_file) | |
1285 | { | |
1286 | switch (cs->c_sclass) | |
1287 | { | |
1288 | case C_EXT: | |
1289 | case C_THUMBEXT: | |
1290 | case C_THUMBEXTFUNC: | |
1291 | case C_SECTION: | |
1292 | case C_NT_WEAK: | |
1293 | case C_STAT: | |
1294 | case C_THUMBSTAT: | |
1295 | case C_THUMBSTATFUNC: | |
1296 | case C_LABEL: | |
1297 | case C_THUMBLABEL: | |
1298 | case C_BLOCK: | |
1299 | case C_FCN: | |
1300 | case C_EFCN: | |
1301 | if (cs->c_secnum != 0) | |
1302 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1303 | break; | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | \f | |
aff410f1 | 1308 | /* Support for string table handling. */ |
c906108c SS |
1309 | |
1310 | static char *stringtab = NULL; | |
1311 | ||
1312 | static int | |
fba45db2 | 1313 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1314 | { |
1315 | long length; | |
1316 | int val; | |
1317 | unsigned char lengthbuf[4]; | |
1318 | ||
1319 | free_stringtab (); | |
1320 | ||
1321 | /* If the file is stripped, the offset might be zero, indicating no | |
aff410f1 | 1322 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1323 | if (offset == 0) |
1324 | return 0; | |
1325 | ||
1326 | if (bfd_seek (abfd, offset, 0) < 0) | |
1327 | return -1; | |
1328 | ||
3a42e9d0 | 1329 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1330 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1331 | |
c906108c | 1332 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1333 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1334 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1335 | return 0; | |
1336 | ||
1337 | stringtab = (char *) xmalloc (length); | |
aff410f1 MS |
1338 | /* This is in target format (probably not very useful, and not |
1339 | currently used), not host format. */ | |
c906108c | 1340 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1341 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1342 | return 0; |
1343 | ||
aff410f1 MS |
1344 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1345 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1346 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1347 | return -1; | |
1348 | ||
1349 | return 0; | |
1350 | } | |
1351 | ||
1352 | static void | |
fba45db2 | 1353 | free_stringtab (void) |
c906108c SS |
1354 | { |
1355 | if (stringtab) | |
b8c9b27d | 1356 | xfree (stringtab); |
c906108c SS |
1357 | stringtab = NULL; |
1358 | } | |
1359 | ||
74b7792f AC |
1360 | static void |
1361 | free_stringtab_cleanup (void *ignore) | |
1362 | { | |
1363 | free_stringtab (); | |
1364 | } | |
1365 | ||
c906108c | 1366 | static char * |
fba45db2 | 1367 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1368 | { |
c5aa993b | 1369 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1370 | char *result; |
1371 | ||
1372 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1373 | { | |
1374 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1375 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1376 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1377 | } | |
1378 | else | |
1379 | { | |
1380 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1381 | buffer[SYMNMLEN] = '\0'; | |
1382 | result = buffer; | |
1383 | } | |
1384 | return result; | |
1385 | } | |
1386 | ||
aff410f1 MS |
1387 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1388 | Return only the last component of the name. Result is in static | |
1389 | storage and is only good for temporary use. */ | |
c906108c | 1390 | |
9f37bbcc | 1391 | static const char * |
fba45db2 | 1392 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1393 | { |
1394 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1395 | const char *result; |
c906108c SS |
1396 | |
1397 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1398 | { |
1399 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1400 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1401 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1402 | } | |
c906108c SS |
1403 | else |
1404 | { | |
1405 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1406 | buffer[FILNMLEN] = '\0'; | |
1407 | } | |
1408 | result = buffer; | |
1409 | ||
1410 | /* FIXME: We should not be throwing away the information about what | |
1411 | directory. It should go into dirname of the symtab, or some such | |
1412 | place. */ | |
9f37bbcc | 1413 | result = lbasename (result); |
c906108c SS |
1414 | return (result); |
1415 | } | |
1416 | \f | |
1417 | /* Support for line number handling. */ | |
1418 | ||
1419 | static char *linetab = NULL; | |
1420 | static long linetab_offset; | |
1421 | static unsigned long linetab_size; | |
1422 | ||
1423 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1424 | external (unswapped) format in memory; we'll swap them as we enter | |
1425 | them into GDB's data structures. */ | |
c5aa993b | 1426 | |
c906108c | 1427 | static int |
fba45db2 | 1428 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1429 | { |
1430 | int val; | |
1431 | ||
1432 | linetab_offset = offset; | |
1433 | linetab_size = size; | |
1434 | ||
c5aa993b | 1435 | free_linetab (); |
c906108c SS |
1436 | |
1437 | if (size == 0) | |
1438 | return 0; | |
1439 | ||
1440 | if (bfd_seek (abfd, offset, 0) < 0) | |
1441 | return -1; | |
c5aa993b | 1442 | |
aff410f1 | 1443 | /* Allocate the desired table, plus a sentinel. */ |
c906108c SS |
1444 | linetab = (char *) xmalloc (size + local_linesz); |
1445 | ||
3a42e9d0 | 1446 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1447 | if (val != size) |
1448 | return -1; | |
1449 | ||
aff410f1 | 1450 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1451 | memset (linetab + size, 0, local_linesz); |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | static void | |
fba45db2 | 1457 | free_linetab (void) |
c906108c SS |
1458 | { |
1459 | if (linetab) | |
b8c9b27d | 1460 | xfree (linetab); |
c906108c SS |
1461 | linetab = NULL; |
1462 | } | |
1463 | ||
74b7792f AC |
1464 | static void |
1465 | free_linetab_cleanup (void *ignore) | |
1466 | { | |
1467 | free_linetab (); | |
1468 | } | |
1469 | ||
c906108c SS |
1470 | #if !defined (L_LNNO32) |
1471 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1472 | #endif | |
1473 | ||
1474 | static void | |
aa1ee363 AC |
1475 | enter_linenos (long file_offset, int first_line, |
1476 | int last_line, struct objfile *objfile) | |
c906108c | 1477 | { |
fbf65064 | 1478 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1479 | char *rawptr; |
c906108c SS |
1480 | struct internal_lineno lptr; |
1481 | ||
1482 | if (!linetab) | |
c5aa993b | 1483 | return; |
c906108c SS |
1484 | if (file_offset < linetab_offset) |
1485 | { | |
23136709 | 1486 | complaint (&symfile_complaints, |
3d263c1d | 1487 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1488 | file_offset); |
aff410f1 | 1489 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1490 | return; |
aff410f1 MS |
1491 | file_offset += linetab_offset; /* Try reading at that linetab |
1492 | offset. */ | |
c906108c | 1493 | } |
c5aa993b | 1494 | |
c906108c SS |
1495 | rawptr = &linetab[file_offset - linetab_offset]; |
1496 | ||
aff410f1 | 1497 | /* Skip first line entry for each function. */ |
c906108c | 1498 | rawptr += local_linesz; |
aff410f1 | 1499 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1500 | first_line--; |
1501 | ||
e6a8a7d2 EZ |
1502 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1503 | info), the next function's L_LNNO32 might not be zero, so don't | |
1504 | overstep the table's end in any case. */ | |
1505 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1506 | { |
1507 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1508 | rawptr += local_linesz; | |
e6a8a7d2 | 1509 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1510 | we exit. */ |
c5aa993b | 1511 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1512 | { |
1513 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1514 | addr += ANOFFSET (objfile->section_offsets, |
1515 | SECT_OFF_TEXT (objfile)); | |
1516 | record_line (current_subfile, | |
1517 | first_line + L_LNNO32 (&lptr), | |
fbf65064 UW |
1518 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1519 | } | |
c5aa993b JM |
1520 | else |
1521 | break; | |
1522 | } | |
c906108c SS |
1523 | } |
1524 | \f | |
1525 | static void | |
fba45db2 | 1526 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1527 | { |
52f0bd74 AC |
1528 | struct type *target = TYPE_TARGET_TYPE (type); |
1529 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1530 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1531 | ||
1532 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1533 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1534 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1535 | field_size); | |
c906108c | 1536 | |
aff410f1 MS |
1537 | memcpy (TYPE_FIELDS (target), |
1538 | TYPE_FIELDS (real_target), | |
1539 | field_size); | |
c906108c SS |
1540 | |
1541 | if (TYPE_NAME (real_target)) | |
1542 | { | |
0d5cff50 DE |
1543 | /* The previous copy of TYPE_NAME is allocated by |
1544 | process_coff_symbol. */ | |
c906108c | 1545 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1546 | xfree ((char*) TYPE_NAME (target)); |
1547 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1548 | } |
1549 | } | |
1550 | ||
1551 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1552 | so that they can be used to print out opaque data structures |
1553 | properly. */ | |
c906108c SS |
1554 | |
1555 | static void | |
fba45db2 | 1556 | patch_opaque_types (struct symtab *s) |
c906108c | 1557 | { |
52f0bd74 | 1558 | struct block *b; |
8157b174 | 1559 | struct block_iterator iter; |
52f0bd74 | 1560 | struct symbol *real_sym; |
c5aa993b | 1561 | |
aff410f1 | 1562 | /* Go through the per-file symbols only. */ |
439247b6 | 1563 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1564 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1565 | { |
1566 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1567 | Remove syms from the chain when their types are stored, |
1568 | but search the whole chain, as there may be several syms | |
1569 | from different files with the same name. */ | |
5aafa1cc PM |
1570 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1571 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1572 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1573 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1574 | { |
0d5cff50 | 1575 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1576 | int hash = hashname (name); |
1577 | struct symbol *sym, *prev; | |
c5aa993b | 1578 | |
c906108c SS |
1579 | prev = 0; |
1580 | for (sym = opaque_type_chain[hash]; sym;) | |
1581 | { | |
5aafa1cc PM |
1582 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1583 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1584 | { |
1585 | if (prev) | |
1586 | { | |
1587 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1588 | } | |
1589 | else | |
1590 | { | |
1591 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1592 | } | |
c5aa993b | 1593 | |
c906108c | 1594 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1595 | |
c906108c SS |
1596 | if (prev) |
1597 | { | |
1598 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | sym = opaque_type_chain[hash]; | |
1603 | } | |
1604 | } | |
1605 | else | |
1606 | { | |
1607 | prev = sym; | |
1608 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1609 | } | |
1610 | } | |
1611 | } | |
1612 | } | |
1613 | } | |
1614 | \f | |
768a979c UW |
1615 | static int |
1616 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1617 | { | |
1618 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1619 | } | |
1620 | ||
1621 | static const struct symbol_register_ops coff_register_funcs = { | |
1622 | coff_reg_to_regnum | |
1623 | }; | |
1624 | ||
f1e6e072 TT |
1625 | /* The "aclass" index for computed COFF symbols. */ |
1626 | ||
1627 | static int coff_register_index; | |
1628 | ||
c906108c | 1629 | static struct symbol * |
aa1ee363 AC |
1630 | process_coff_symbol (struct coff_symbol *cs, |
1631 | union internal_auxent *aux, | |
fba45db2 | 1632 | struct objfile *objfile) |
c906108c | 1633 | { |
e623cf5d | 1634 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1635 | char *name; |
1636 | ||
c906108c SS |
1637 | name = cs->c_name; |
1638 | name = EXTERNAL_NAME (name, objfile->obfd); | |
f85f34ed TT |
1639 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
1640 | &objfile->objfile_obstack); | |
04a679b8 | 1641 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1642 | |
1643 | /* default assumptions */ | |
1644 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1645 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1646 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1647 | ||
1648 | if (ISFCN (cs->c_type)) | |
1649 | { | |
aff410f1 MS |
1650 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1651 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1652 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1653 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1654 | aux, objfile)); | |
c906108c | 1655 | |
f1e6e072 | 1656 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1657 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1658 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1659 | add_symbol_to_list (sym, &file_symbols); | |
1660 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1661 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1662 | add_symbol_to_list (sym, &global_symbols); | |
1663 | } | |
1664 | else | |
1665 | { | |
5e2b427d | 1666 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1667 | switch (cs->c_sclass) |
1668 | { | |
c5aa993b JM |
1669 | case C_NULL: |
1670 | break; | |
c906108c | 1671 | |
c5aa993b | 1672 | case C_AUTO: |
f1e6e072 | 1673 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c5aa993b JM |
1674 | add_symbol_to_list (sym, &local_symbols); |
1675 | break; | |
c906108c | 1676 | |
c5aa993b JM |
1677 | case C_THUMBEXT: |
1678 | case C_THUMBEXTFUNC: | |
1679 | case C_EXT: | |
f1e6e072 | 1680 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1681 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1682 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1683 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1684 | add_symbol_to_list (sym, &global_symbols); |
1685 | break; | |
c906108c | 1686 | |
c5aa993b JM |
1687 | case C_THUMBSTAT: |
1688 | case C_THUMBSTATFUNC: | |
1689 | case C_STAT: | |
f1e6e072 | 1690 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1691 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1692 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1693 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1694 | if (within_function) |
1695 | { | |
aff410f1 | 1696 | /* Static symbol of local scope. */ |
c906108c SS |
1697 | add_symbol_to_list (sym, &local_symbols); |
1698 | } | |
c5aa993b JM |
1699 | else |
1700 | { | |
aff410f1 | 1701 | /* Static symbol at top level of file. */ |
c906108c SS |
1702 | add_symbol_to_list (sym, &file_symbols); |
1703 | } | |
c5aa993b | 1704 | break; |
c906108c SS |
1705 | |
1706 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1707 | case C_GLBLREG: |
c906108c | 1708 | #endif |
c5aa993b | 1709 | case C_REG: |
f1e6e072 | 1710 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1711 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b JM |
1712 | add_symbol_to_list (sym, &local_symbols); |
1713 | break; | |
c906108c | 1714 | |
c5aa993b JM |
1715 | case C_THUMBLABEL: |
1716 | case C_LABEL: | |
1717 | break; | |
c906108c | 1718 | |
c5aa993b | 1719 | case C_ARG: |
f1e6e072 | 1720 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1721 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1722 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1723 | break; |
c906108c | 1724 | |
c5aa993b | 1725 | case C_REGPARM: |
f1e6e072 | 1726 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1727 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1728 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1729 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1730 | break; |
c906108c | 1731 | |
c5aa993b | 1732 | case C_TPDEF: |
f1e6e072 | 1733 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1734 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1735 | |
0963b4bd | 1736 | /* If type has no name, give it one. */ |
c5aa993b JM |
1737 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1738 | { | |
1739 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1740 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1741 | { | |
aff410f1 MS |
1742 | /* If we are giving a name to a type such as |
1743 | "pointer to foo" or "function returning foo", we | |
1744 | better not set the TYPE_NAME. If the program | |
1745 | contains "typedef char *caddr_t;", we don't want | |
1746 | all variables of type char * to print as caddr_t. | |
1747 | This is not just a consequence of GDB's type | |
1748 | management; CC and GCC (at least through version | |
1749 | 2.4) both output variables of either type char * | |
1750 | or caddr_t with the type refering to the C_TPDEF | |
1751 | symbol for caddr_t. If a future compiler cleans | |
1752 | this up it GDB is not ready for it yet, but if it | |
1753 | becomes ready we somehow need to disable this | |
1754 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1755 | |
1756 | Sigh. | |
1757 | ||
1758 | Fortunately, this check seems not to be necessary | |
1759 | for anything except pointers or functions. */ | |
1760 | ; | |
1761 | } | |
1762 | else | |
1763 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1764 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1765 | } |
c906108c | 1766 | |
aff410f1 MS |
1767 | /* Keep track of any type which points to empty structured |
1768 | type, so it can be filled from a definition from another | |
1769 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1770 | not an empty structured type, though; the forward | |
1771 | references work themselves out via the magic of | |
1772 | coff_lookup_type. */ | |
5aafa1cc PM |
1773 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1774 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1775 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1776 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1777 | { |
3567439c | 1778 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1779 | |
c5aa993b JM |
1780 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1781 | opaque_type_chain[i] = sym; | |
1782 | } | |
1783 | add_symbol_to_list (sym, &file_symbols); | |
1784 | break; | |
c906108c | 1785 | |
c5aa993b JM |
1786 | case C_STRTAG: |
1787 | case C_UNTAG: | |
1788 | case C_ENTAG: | |
f1e6e072 | 1789 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1790 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1791 | |
1792 | /* Some compilers try to be helpful by inventing "fake" | |
1793 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1794 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
c5aa993b | 1795 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1796 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1797 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1798 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1799 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1800 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1801 | |
1802 | add_symbol_to_list (sym, &file_symbols); | |
1803 | break; | |
c906108c | 1804 | |
c5aa993b JM |
1805 | default: |
1806 | break; | |
c906108c SS |
1807 | } |
1808 | } | |
1809 | return sym; | |
1810 | } | |
1811 | \f | |
1812 | /* Decode a coff type specifier; return the type that is meant. */ | |
1813 | ||
1814 | static struct type * | |
aa1ee363 | 1815 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1816 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1817 | { |
52f0bd74 | 1818 | struct type *type = 0; |
c906108c SS |
1819 | unsigned int new_c_type; |
1820 | ||
1821 | if (c_type & ~N_BTMASK) | |
1822 | { | |
1823 | new_c_type = DECREF (c_type); | |
1824 | if (ISPTR (c_type)) | |
1825 | { | |
5e2b427d | 1826 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1827 | type = lookup_pointer_type (type); |
1828 | } | |
1829 | else if (ISFCN (c_type)) | |
1830 | { | |
5e2b427d | 1831 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1832 | type = lookup_function_type (type); |
1833 | } | |
1834 | else if (ISARY (c_type)) | |
1835 | { | |
1836 | int i, n; | |
aa1ee363 | 1837 | unsigned short *dim; |
c906108c SS |
1838 | struct type *base_type, *index_type, *range_type; |
1839 | ||
1840 | /* Define an array type. */ | |
aff410f1 | 1841 | /* auxent refers to array, not base type. */ |
c906108c SS |
1842 | if (aux->x_sym.x_tagndx.l == 0) |
1843 | cs->c_naux = 0; | |
1844 | ||
aff410f1 | 1845 | /* Shift the indices down. */ |
c906108c SS |
1846 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1847 | i = 1; | |
1848 | n = dim[0]; | |
1849 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1850 | *dim = *(dim + 1); | |
1851 | *dim = 0; | |
1852 | ||
5e2b427d | 1853 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1854 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 SA |
1855 | range_type |
1856 | = create_static_range_type ((struct type *) NULL, | |
1857 | index_type, 0, n - 1); | |
c906108c | 1858 | type = |
aff410f1 MS |
1859 | create_array_type ((struct type *) NULL, |
1860 | base_type, range_type); | |
c906108c SS |
1861 | } |
1862 | return type; | |
1863 | } | |
1864 | ||
aff410f1 MS |
1865 | /* Reference to existing type. This only occurs with the struct, |
1866 | union, and enum types. EPI a29k coff fakes us out by producing | |
1867 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1868 | unions, and enums, so we have to check the c_sclass field. SCO | |
1869 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1870 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1871 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1872 | { | |
1873 | if (cs->c_sclass != C_STRTAG | |
1874 | && cs->c_sclass != C_UNTAG | |
1875 | && cs->c_sclass != C_ENTAG | |
1876 | && aux->x_sym.x_tagndx.l >= 0) | |
1877 | { | |
1878 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1879 | return type; | |
1880 | } | |
1881 | else | |
1882 | { | |
23136709 | 1883 | complaint (&symfile_complaints, |
3d263c1d | 1884 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1885 | cs->c_name); |
aff410f1 | 1886 | /* And fall through to decode_base_type... */ |
c906108c SS |
1887 | } |
1888 | } | |
1889 | ||
5e2b427d | 1890 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1891 | } |
1892 | ||
1893 | /* Decode a coff type specifier for function definition; | |
1894 | return the type that the function returns. */ | |
1895 | ||
1896 | static struct type * | |
aff410f1 MS |
1897 | decode_function_type (struct coff_symbol *cs, |
1898 | unsigned int c_type, | |
1899 | union internal_auxent *aux, | |
1900 | struct objfile *objfile) | |
c906108c SS |
1901 | { |
1902 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1903 | cs->c_naux = 0; /* auxent refers to function, not base |
1904 | type. */ | |
c906108c | 1905 | |
5e2b427d | 1906 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1907 | } |
1908 | \f | |
aff410f1 | 1909 | /* Basic C types. */ |
c906108c SS |
1910 | |
1911 | static struct type * | |
aff410f1 MS |
1912 | decode_base_type (struct coff_symbol *cs, |
1913 | unsigned int c_type, | |
1914 | union internal_auxent *aux, | |
1915 | struct objfile *objfile) | |
c906108c | 1916 | { |
5e2b427d | 1917 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1918 | struct type *type; |
1919 | ||
1920 | switch (c_type) | |
1921 | { | |
c5aa993b | 1922 | case T_NULL: |
aff410f1 | 1923 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1924 | return objfile_type (objfile)->builtin_void; |
c906108c | 1925 | |
c906108c | 1926 | #ifdef T_VOID |
c5aa993b JM |
1927 | case T_VOID: |
1928 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1929 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1930 | #endif |
1931 | ||
c5aa993b | 1932 | case T_CHAR: |
46bf5051 | 1933 | return objfile_type (objfile)->builtin_char; |
c906108c | 1934 | |
c5aa993b | 1935 | case T_SHORT: |
46bf5051 | 1936 | return objfile_type (objfile)->builtin_short; |
c906108c | 1937 | |
c5aa993b | 1938 | case T_INT: |
46bf5051 | 1939 | return objfile_type (objfile)->builtin_int; |
c906108c | 1940 | |
c5aa993b JM |
1941 | case T_LONG: |
1942 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1943 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1944 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1945 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1946 | else |
46bf5051 | 1947 | return objfile_type (objfile)->builtin_long; |
c906108c | 1948 | |
c5aa993b | 1949 | case T_FLOAT: |
46bf5051 | 1950 | return objfile_type (objfile)->builtin_float; |
c906108c | 1951 | |
c5aa993b | 1952 | case T_DOUBLE: |
46bf5051 | 1953 | return objfile_type (objfile)->builtin_double; |
c906108c | 1954 | |
c5aa993b | 1955 | case T_LNGDBL: |
46bf5051 | 1956 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1957 | |
c5aa993b JM |
1958 | case T_STRUCT: |
1959 | if (cs->c_naux != 1) | |
1960 | { | |
aff410f1 | 1961 | /* Anonymous structure type. */ |
c5aa993b JM |
1962 | type = coff_alloc_type (cs->c_symnum); |
1963 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1964 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1965 | /* This used to set the tag to "<opaque>". But I think |
1966 | setting it to NULL is right, and the printing code can | |
1967 | print it as "struct {...}". */ | |
c5aa993b JM |
1968 | TYPE_TAG_NAME (type) = NULL; |
1969 | INIT_CPLUS_SPECIFIC (type); | |
1970 | TYPE_LENGTH (type) = 0; | |
1971 | TYPE_FIELDS (type) = 0; | |
1972 | TYPE_NFIELDS (type) = 0; | |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | type = coff_read_struct_type (cs->c_symnum, | |
1977 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1978 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1979 | objfile); | |
c5aa993b JM |
1980 | } |
1981 | return type; | |
c906108c | 1982 | |
c5aa993b JM |
1983 | case T_UNION: |
1984 | if (cs->c_naux != 1) | |
1985 | { | |
aff410f1 | 1986 | /* Anonymous union type. */ |
c5aa993b JM |
1987 | type = coff_alloc_type (cs->c_symnum); |
1988 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1989 | /* This used to set the tag to "<opaque>". But I think |
1990 | setting it to NULL is right, and the printing code can | |
1991 | print it as "union {...}". */ | |
c5aa993b JM |
1992 | TYPE_TAG_NAME (type) = NULL; |
1993 | INIT_CPLUS_SPECIFIC (type); | |
1994 | TYPE_LENGTH (type) = 0; | |
1995 | TYPE_FIELDS (type) = 0; | |
1996 | TYPE_NFIELDS (type) = 0; | |
1997 | } | |
1998 | else | |
1999 | { | |
2000 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 2001 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
2002 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
2003 | objfile); | |
c5aa993b JM |
2004 | } |
2005 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
2006 | return type; | |
c906108c | 2007 | |
c5aa993b JM |
2008 | case T_ENUM: |
2009 | if (cs->c_naux != 1) | |
2010 | { | |
aff410f1 | 2011 | /* Anonymous enum type. */ |
c5aa993b JM |
2012 | type = coff_alloc_type (cs->c_symnum); |
2013 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
2014 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
2015 | /* This used to set the tag to "<opaque>". But I think |
2016 | setting it to NULL is right, and the printing code can | |
2017 | print it as "enum {...}". */ | |
c5aa993b JM |
2018 | TYPE_TAG_NAME (type) = NULL; |
2019 | TYPE_LENGTH (type) = 0; | |
2020 | TYPE_FIELDS (type) = 0; | |
2021 | TYPE_NFIELDS (type) = 0; | |
2022 | } | |
2023 | else | |
2024 | { | |
2025 | type = coff_read_enum_type (cs->c_symnum, | |
2026 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
2027 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
2028 | objfile); | |
c5aa993b JM |
2029 | } |
2030 | return type; | |
2031 | ||
2032 | case T_MOE: | |
aff410f1 | 2033 | /* Shouldn't show up here. */ |
c5aa993b | 2034 | break; |
c906108c | 2035 | |
c5aa993b | 2036 | case T_UCHAR: |
46bf5051 | 2037 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 2038 | |
c5aa993b | 2039 | case T_USHORT: |
46bf5051 | 2040 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 2041 | |
c5aa993b | 2042 | case T_UINT: |
46bf5051 | 2043 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 2044 | |
c5aa993b JM |
2045 | case T_ULONG: |
2046 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 2047 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 2048 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 2049 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 2050 | else |
46bf5051 | 2051 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 2052 | } |
aff410f1 MS |
2053 | complaint (&symfile_complaints, |
2054 | _("Unexpected type for symbol %s"), cs->c_name); | |
46bf5051 | 2055 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
2056 | } |
2057 | \f | |
2058 | /* This page contains subroutines of read_type. */ | |
2059 | ||
2060 | /* Read the description of a structure (or union type) and return an | |
2061 | object describing the type. */ | |
2062 | ||
2063 | static struct type * | |
5e2b427d UW |
2064 | coff_read_struct_type (int index, int length, int lastsym, |
2065 | struct objfile *objfile) | |
c906108c SS |
2066 | { |
2067 | struct nextfield | |
2068 | { | |
2069 | struct nextfield *next; | |
2070 | struct field field; | |
2071 | }; | |
2072 | ||
52f0bd74 AC |
2073 | struct type *type; |
2074 | struct nextfield *list = 0; | |
fe978cb0 | 2075 | struct nextfield *newobj; |
c906108c | 2076 | int nfields = 0; |
52f0bd74 | 2077 | int n; |
c906108c SS |
2078 | char *name; |
2079 | struct coff_symbol member_sym; | |
52f0bd74 | 2080 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2081 | struct internal_syment sub_sym; |
2082 | union internal_auxent sub_aux; | |
2083 | int done = 0; | |
2084 | ||
2085 | type = coff_alloc_type (index); | |
2086 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2087 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2088 | TYPE_LENGTH (type) = length; |
2089 | ||
2090 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2091 | { | |
2092 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2093 | name = ms->c_name; | |
5e2b427d | 2094 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2095 | |
2096 | switch (ms->c_sclass) | |
2097 | { | |
c5aa993b JM |
2098 | case C_MOS: |
2099 | case C_MOU: | |
2100 | ||
2101 | /* Get space to record the next field's data. */ | |
8d749320 | 2102 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2103 | newobj->next = list; |
2104 | list = newobj; | |
c5aa993b JM |
2105 | |
2106 | /* Save the data. */ | |
10f0c4bb TT |
2107 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
2108 | name, strlen (name)); | |
aff410f1 MS |
2109 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2110 | &sub_aux, objfile); | |
d6a843b5 | 2111 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2112 | FIELD_BITSIZE (list->field) = 0; |
2113 | nfields++; | |
2114 | break; | |
c906108c | 2115 | |
c5aa993b JM |
2116 | case C_FIELD: |
2117 | ||
2118 | /* Get space to record the next field's data. */ | |
8d749320 | 2119 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2120 | newobj->next = list; |
2121 | list = newobj; | |
c5aa993b JM |
2122 | |
2123 | /* Save the data. */ | |
10f0c4bb TT |
2124 | list->field.name = obstack_copy0 (&objfile->objfile_obstack, |
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 | |
3567439c | 2195 | SYMBOL_SET_LINKAGE_NAME (sym, |
10f0c4bb TT |
2196 | obstack_copy0 (&objfile->objfile_obstack, |
2197 | name, strlen (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 | } |