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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
42a4f53d | 2 | Copyright (C) 1987-2019 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 | 32 | #include "objfiles.h" |
0baae8db | 33 | #include "buildsym-legacy.h" |
c906108c SS |
34 | #include "gdb-stabs.h" |
35 | #include "stabsread.h" | |
36 | #include "complaints.h" | |
37 | #include "target.h" | |
fe898f56 | 38 | #include "block.h" |
de4f826b | 39 | #include "dictionary.h" |
c906108c | 40 | |
1b6bc7e0 CF |
41 | #include "coff-pe-read.h" |
42 | ||
ccefe4c4 | 43 | #include "psymtab.h" |
c74f7d1c | 44 | #include "build-id.h" |
ccefe4c4 | 45 | |
b8b98ad1 TT |
46 | /* Key for COFF-associated data. */ |
47 | ||
48 | static const struct objfile_data *coff_objfile_data_key; | |
49 | ||
91a81f69 TT |
50 | /* The objfile we are currently reading. */ |
51 | ||
dd707e8e | 52 | static struct objfile *coffread_objfile; |
91a81f69 | 53 | |
c5aa993b JM |
54 | struct coff_symfile_info |
55 | { | |
aff410f1 MS |
56 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
57 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 58 | |
aff410f1 MS |
59 | CORE_ADDR textaddr; /* Addr of .text section. */ |
60 | unsigned int textsize; /* Size of .text section. */ | |
e2a03548 | 61 | std::vector<asection *> *stabsects; /* .stab sections. */ |
aff410f1 | 62 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
63 | char *stabstrdata; |
64 | }; | |
c906108c SS |
65 | |
66 | /* Translate an external name string into a user-visible name. */ | |
67 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
68 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
69 | ? string + 1 : string) | |
c906108c SS |
70 | |
71 | /* To be an sdb debug type, type must have at least a basic or primary | |
72 | derived type. Using this rather than checking against T_NULL is | |
73 | said to prevent core dumps if we try to operate on Michael Bloom | |
74 | dbx-in-coff file. */ | |
75 | ||
76 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
77 | ||
c906108c SS |
78 | /* Core address of start and end of text of current source file. |
79 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
80 | ||
81 | static CORE_ADDR current_source_start_addr; | |
82 | static CORE_ADDR current_source_end_addr; | |
83 | ||
84 | /* The addresses of the symbol table stream and number of symbols | |
85 | of the object file we are reading (as copied into core). */ | |
86 | ||
87 | static bfd *nlist_bfd_global; | |
88 | static int nlist_nsyms_global; | |
89 | ||
c906108c | 90 | |
aff410f1 MS |
91 | /* Pointers to scratch storage, used for reading raw symbols and |
92 | auxents. */ | |
c906108c SS |
93 | |
94 | static char *temp_sym; | |
95 | static char *temp_aux; | |
96 | ||
97 | /* Local variables that hold the shift and mask values for the | |
98 | COFF file that we are currently reading. These come back to us | |
99 | from BFD, and are referenced by their macro names, as well as | |
100 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
101 | macros from include/coff/internal.h . */ | |
102 | ||
c5aa993b JM |
103 | static unsigned local_n_btmask; |
104 | static unsigned local_n_btshft; | |
105 | static unsigned local_n_tmask; | |
106 | static unsigned local_n_tshift; | |
c906108c SS |
107 | |
108 | #define N_BTMASK local_n_btmask | |
109 | #define N_BTSHFT local_n_btshft | |
110 | #define N_TMASK local_n_tmask | |
111 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 112 | |
aff410f1 MS |
113 | /* Local variables that hold the sizes in the file of various COFF |
114 | structures. (We only need to know this to read them from the file | |
115 | -- BFD will then translate the data in them, into `internal_xxx' | |
116 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 117 | |
c5aa993b JM |
118 | static unsigned local_linesz; |
119 | static unsigned local_symesz; | |
120 | static unsigned local_auxesz; | |
c906108c SS |
121 | |
122 | /* This is set if this is a PE format file. */ | |
123 | ||
124 | static int pe_file; | |
125 | ||
126 | /* Chain of typedefs of pointers to empty struct/union types. | |
127 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
128 | ||
129 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
130 | ||
aff410f1 | 131 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 132 | |
c5aa993b JM |
133 | struct coff_symbol |
134 | { | |
135 | char *c_name; | |
aff410f1 MS |
136 | int c_symnum; /* Symbol number of this entry. */ |
137 | int c_naux; /* 0 if syment only, 1 if syment + | |
138 | auxent, etc. */ | |
5e8db398 | 139 | CORE_ADDR c_value; |
c5aa993b JM |
140 | int c_sclass; |
141 | int c_secnum; | |
142 | unsigned int c_type; | |
143 | }; | |
c906108c | 144 | |
fc474241 DE |
145 | /* Vector of types defined so far, indexed by their type numbers. */ |
146 | ||
147 | static struct type **type_vector; | |
148 | ||
149 | /* Number of elements allocated for type_vector currently. */ | |
150 | ||
151 | static int type_vector_length; | |
152 | ||
153 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
154 | realloc'd down to the size actually used, when completed. */ | |
155 | ||
156 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
157 | ||
e2a03548 TT |
158 | static char *linetab = NULL; |
159 | static long linetab_offset; | |
160 | static unsigned long linetab_size; | |
161 | ||
162 | static char *stringtab = NULL; | |
163 | ||
a14ed312 | 164 | extern void stabsread_clear_cache (void); |
7be570e7 | 165 | |
5e2b427d UW |
166 | static struct type *coff_read_struct_type (int, int, int, |
167 | struct objfile *); | |
c906108c | 168 | |
a14ed312 | 169 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
170 | unsigned int, |
171 | union internal_auxent *, | |
5e2b427d | 172 | struct objfile *); |
c906108c | 173 | |
a14ed312 | 174 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
175 | union internal_auxent *, |
176 | struct objfile *); | |
c906108c | 177 | |
a14ed312 KB |
178 | static struct type *decode_function_type (struct coff_symbol *, |
179 | unsigned int, | |
5e2b427d UW |
180 | union internal_auxent *, |
181 | struct objfile *); | |
c906108c | 182 | |
5e2b427d UW |
183 | static struct type *coff_read_enum_type (int, int, int, |
184 | struct objfile *); | |
c906108c | 185 | |
a14ed312 KB |
186 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
187 | union internal_auxent *, | |
188 | struct objfile *); | |
c906108c | 189 | |
a14ed312 | 190 | static void patch_opaque_types (struct symtab *); |
c906108c | 191 | |
a14ed312 | 192 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 193 | |
e2a03548 | 194 | static int init_lineno (bfd *, long, int, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 195 | |
a14ed312 | 196 | static char *getsymname (struct internal_syment *); |
c906108c | 197 | |
9f37bbcc | 198 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 199 | |
e2a03548 | 200 | static int init_stringtab (bfd *, long, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 201 | |
a14ed312 | 202 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
203 | struct internal_syment *, |
204 | union internal_auxent *); | |
c906108c | 205 | |
8dddcb8f TT |
206 | static void coff_symtab_read (minimal_symbol_reader &, |
207 | long, unsigned int, struct objfile *); | |
c906108c SS |
208 | \f |
209 | /* We are called once per section from coff_symfile_read. We | |
210 | need to examine each section we are passed, check to see | |
211 | if it is something we are interested in processing, and | |
212 | if so, stash away some access information for the section. | |
213 | ||
214 | FIXME: The section names should not be hardwired strings (what | |
215 | should they be? I don't think most object file formats have enough | |
216 | section flags to specify what kind of debug section it is | |
217 | -kingdon). */ | |
218 | ||
219 | static void | |
12b9c64f | 220 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 221 | { |
52f0bd74 | 222 | struct coff_symfile_info *csi; |
c906108c SS |
223 | const char *name; |
224 | ||
225 | csi = (struct coff_symfile_info *) csip; | |
226 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 227 | if (strcmp (name, ".text") == 0) |
c906108c SS |
228 | { |
229 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
230 | csi->textsize += bfd_section_size (abfd, sectp); | |
231 | } | |
61012eef | 232 | else if (startswith (name, ".text")) |
c906108c SS |
233 | { |
234 | csi->textsize += bfd_section_size (abfd, sectp); | |
235 | } | |
7ecb6532 | 236 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
237 | { |
238 | csi->stabstrsect = sectp; | |
239 | } | |
61012eef | 240 | else if (startswith (name, ".stab")) |
c906108c SS |
241 | { |
242 | const char *s; | |
243 | ||
244 | /* We can have multiple .stab sections if linked with | |
245 | --split-by-reloc. */ | |
246 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 247 | if (!isdigit (*s)) |
c906108c SS |
248 | break; |
249 | if (*s == '\0') | |
e2a03548 | 250 | csi->stabsects->push_back (sectp); |
c906108c SS |
251 | } |
252 | } | |
253 | ||
254 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 255 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 256 | |
c5aa993b JM |
257 | struct find_targ_sec_arg |
258 | { | |
259 | int targ_index; | |
260 | asection **resultp; | |
261 | }; | |
c906108c | 262 | |
c5aa993b | 263 | static void |
12b9c64f | 264 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 265 | { |
c5aa993b | 266 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 267 | |
c906108c SS |
268 | if (sect->target_index == args->targ_index) |
269 | *args->resultp = sect; | |
270 | } | |
271 | ||
fbcebcb1 DJ |
272 | /* Return the bfd_section that CS points to. */ |
273 | static struct bfd_section* | |
274 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
275 | { |
276 | asection *sect = NULL; | |
277 | struct find_targ_sec_arg args; | |
c906108c SS |
278 | |
279 | args.targ_index = cs->c_secnum; | |
280 | args.resultp = § | |
281 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
282 | return sect; |
283 | } | |
284 | ||
285 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
286 | static int | |
287 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
288 | { | |
289 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 290 | |
05cfdb42 DJ |
291 | if (sect == NULL) |
292 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 293 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
294 | } |
295 | ||
296 | /* Return the address of the section of a COFF symbol. */ | |
297 | ||
a14ed312 | 298 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
299 | |
300 | static CORE_ADDR | |
fba45db2 | 301 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
302 | { |
303 | asection *sect = NULL; | |
304 | struct find_targ_sec_arg args; | |
305 | CORE_ADDR addr = 0; | |
306 | ||
307 | args.targ_index = cs->c_secnum; | |
308 | args.resultp = § | |
309 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
310 | if (sect != NULL) | |
81b9b86e | 311 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
312 | return addr; |
313 | } | |
314 | ||
315 | /* Look up a coff type-number index. Return the address of the slot | |
316 | where the type for that index is stored. | |
317 | The type-number is in INDEX. | |
318 | ||
319 | This can be used for finding the type associated with that index | |
320 | or for associating a new type with the index. */ | |
321 | ||
322 | static struct type ** | |
aa1ee363 | 323 | coff_lookup_type (int index) |
c906108c SS |
324 | { |
325 | if (index >= type_vector_length) | |
326 | { | |
327 | int old_vector_length = type_vector_length; | |
328 | ||
329 | type_vector_length *= 2; | |
c5aa993b | 330 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
331 | type_vector_length = index * 2; |
332 | ||
333 | type_vector = (struct type **) | |
334 | xrealloc ((char *) type_vector, | |
335 | type_vector_length * sizeof (struct type *)); | |
336 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 337 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
338 | } |
339 | return &type_vector[index]; | |
340 | } | |
341 | ||
342 | /* Make sure there is a type allocated for type number index | |
343 | and return the type object. | |
344 | This can create an empty (zeroed) type object. */ | |
345 | ||
346 | static struct type * | |
fba45db2 | 347 | coff_alloc_type (int index) |
c906108c | 348 | { |
52f0bd74 AC |
349 | struct type **type_addr = coff_lookup_type (index); |
350 | struct type *type = *type_addr; | |
c906108c SS |
351 | |
352 | /* If we are referring to a type not known at all yet, | |
353 | allocate an empty type for it. | |
354 | We will fill it in later if we find out how. */ | |
355 | if (type == NULL) | |
356 | { | |
dd707e8e | 357 | type = alloc_type (coffread_objfile); |
c906108c SS |
358 | *type_addr = type; |
359 | } | |
360 | return type; | |
361 | } | |
362 | \f | |
c906108c SS |
363 | /* Start a new symtab for a new source file. |
364 | This is called when a COFF ".file" symbol is seen; | |
365 | it indicates the start of data for one original source file. */ | |
366 | ||
367 | static void | |
4d663531 | 368 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 369 | { |
5985ac61 | 370 | within_function = 0; |
4d663531 | 371 | start_symtab (objfile, |
827f438f | 372 | name, |
c5aa993b JM |
373 | /* We never know the directory name for COFF. */ |
374 | NULL, | |
2c99ee5c TT |
375 | /* The start address is irrelevant, since we call |
376 | set_last_source_start_addr in coff_end_symtab. */ | |
5ffa0793 PA |
377 | 0, |
378 | /* Let buildsym.c deduce the language for this symtab. */ | |
379 | language_unknown); | |
c906108c | 380 | record_debugformat ("COFF"); |
c906108c SS |
381 | } |
382 | ||
383 | /* Save the vital information from when starting to read a file, | |
384 | for use when closing off the current file. | |
aff410f1 MS |
385 | NAME is the file name the symbols came from, START_ADDR is the |
386 | first text address for the file, and SIZE is the number of bytes of | |
387 | text. */ | |
c906108c SS |
388 | |
389 | static void | |
9f37bbcc | 390 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 391 | { |
46212e0b | 392 | set_last_source_file (name); |
c906108c SS |
393 | current_source_start_addr = start_addr; |
394 | current_source_end_addr = start_addr + size; | |
c906108c SS |
395 | } |
396 | ||
aff410f1 MS |
397 | /* Finish the symbol definitions for one main source file, close off |
398 | all the lexical contexts for that file (creating struct block's for | |
399 | them), then make the struct symtab for that file and put it in the | |
400 | list of all such. */ | |
c906108c SS |
401 | |
402 | static void | |
fba45db2 | 403 | coff_end_symtab (struct objfile *objfile) |
c906108c | 404 | { |
2c99ee5c | 405 | set_last_source_start_addr (current_source_start_addr); |
c906108c | 406 | |
4d663531 | 407 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 408 | |
aff410f1 | 409 | /* Reinitialize for beginning of new file. */ |
46212e0b | 410 | set_last_source_file (NULL); |
c906108c SS |
411 | } |
412 | \f | |
af312be7 JB |
413 | /* The linker sometimes generates some non-function symbols inside |
414 | functions referencing variables imported from another DLL. | |
415 | Return nonzero if the given symbol corresponds to one of them. */ | |
416 | ||
417 | static int | |
418 | is_import_fixup_symbol (struct coff_symbol *cs, | |
419 | enum minimal_symbol_type type) | |
420 | { | |
421 | /* The following is a bit of a heuristic using the characterictics | |
422 | of these fixup symbols, but should work well in practice... */ | |
423 | int i; | |
424 | ||
425 | /* Must be a non-static text symbol. */ | |
426 | if (type != mst_text) | |
427 | return 0; | |
428 | ||
429 | /* Must be a non-function symbol. */ | |
430 | if (ISFCN (cs->c_type)) | |
431 | return 0; | |
432 | ||
433 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 434 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
435 | return 0; |
436 | if (! isdigit (cs->c_name[4])) | |
437 | return 0; | |
438 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
439 | /* Nothing, just incrementing index past all digits. */; | |
440 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
441 | return 0; | |
442 | ||
443 | return 1; | |
444 | } | |
445 | ||
fbcebcb1 | 446 | static struct minimal_symbol * |
8dddcb8f TT |
447 | record_minimal_symbol (minimal_symbol_reader &reader, |
448 | struct coff_symbol *cs, CORE_ADDR address, | |
fbcebcb1 DJ |
449 | enum minimal_symbol_type type, int section, |
450 | struct objfile *objfile) | |
c906108c | 451 | { |
aff410f1 | 452 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
453 | if (cs->c_name[0] == '@') |
454 | return NULL; | |
c906108c | 455 | |
af312be7 JB |
456 | if (is_import_fixup_symbol (cs, type)) |
457 | { | |
458 | /* Because the value of these symbols is within a function code | |
459 | range, these symbols interfere with the symbol-from-address | |
460 | reverse lookup; this manifests itselfs in backtraces, or any | |
461 | other commands that prints symbolic addresses. Just pretend | |
462 | these symbols do not exist. */ | |
463 | return NULL; | |
464 | } | |
465 | ||
8dddcb8f | 466 | return reader.record_with_info (cs->c_name, address, type, section); |
c906108c SS |
467 | } |
468 | \f | |
469 | /* coff_symfile_init () | |
470 | is the coff-specific initialization routine for reading symbols. | |
471 | It is passed a struct objfile which contains, among other things, | |
472 | the BFD for the file whose symbols are being read, and a slot for | |
473 | a pointer to "private data" which we fill with cookies and other | |
474 | treats for coff_symfile_read (). | |
475 | ||
aff410f1 MS |
476 | We will only be called if this is a COFF or COFF-like file. BFD |
477 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
478 | uses BFD's determination to vector to us. |
479 | ||
aff410f1 MS |
480 | The ultimate result is a new symtab (or, FIXME, eventually a |
481 | psymtab). */ | |
c906108c SS |
482 | |
483 | static void | |
fba45db2 | 484 | coff_symfile_init (struct objfile *objfile) |
c906108c | 485 | { |
d2f4b8fe | 486 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 487 | struct coff_symfile_info *coff; |
c906108c | 488 | |
d2f4b8fe TT |
489 | /* Allocate struct to keep track of stab reading. */ |
490 | dbx = XCNEW (struct dbx_symfile_info); | |
491 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 492 | |
aff410f1 | 493 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
494 | coff = XCNEW (struct coff_symfile_info); |
495 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
496 | |
497 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
498 | find this causes a significant slowdown in gdb then we could | |
499 | set it in the debug symbol readers only when necessary. */ | |
500 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
501 | } |
502 | ||
aff410f1 MS |
503 | /* This function is called for every section; it finds the outer |
504 | limits of the line table (minimum and maximum file offset) so that | |
505 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 506 | |
c906108c | 507 | static void |
7be0c536 | 508 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
509 | { |
510 | struct coff_symfile_info *info; | |
511 | int size, count; | |
512 | file_ptr offset, maxoff; | |
513 | ||
aff410f1 | 514 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 515 | count = asect->lineno_count; |
aff410f1 | 516 | /* End of warning. */ |
c906108c SS |
517 | |
518 | if (count == 0) | |
519 | return; | |
520 | size = count * local_linesz; | |
521 | ||
c5aa993b | 522 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 523 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 524 | offset = asect->line_filepos; |
aff410f1 | 525 | /* End of warning. */ |
c906108c SS |
526 | |
527 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
528 | info->min_lineno_offset = offset; | |
529 | ||
530 | maxoff = offset + size; | |
531 | if (maxoff > info->max_lineno_offset) | |
532 | info->max_lineno_offset = maxoff; | |
533 | } | |
534 | ||
535 | ||
536 | /* The BFD for this file -- only good while we're actively reading | |
537 | symbols into a psymtab or a symtab. */ | |
538 | ||
539 | static bfd *symfile_bfd; | |
540 | ||
541 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
542 | ||
c906108c | 543 | static void |
b15cc25c | 544 | coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
545 | { |
546 | struct coff_symfile_info *info; | |
c906108c SS |
547 | bfd *abfd = objfile->obfd; |
548 | coff_data_type *cdata = coff_data (abfd); | |
b926417a | 549 | char *filename = bfd_get_filename (abfd); |
52f0bd74 | 550 | int val; |
745b8ca0 | 551 | unsigned int num_symbols; |
c906108c SS |
552 | int symtab_offset; |
553 | int stringtab_offset; | |
c906108c | 554 | int stabstrsize; |
c2d11a7d | 555 | |
9a3c8263 SM |
556 | info = (struct coff_symfile_info *) objfile_data (objfile, |
557 | coff_objfile_data_key); | |
aff410f1 | 558 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c | 559 | |
e2a03548 TT |
560 | std::vector<asection *> stabsects; |
561 | scoped_restore restore_stabsects | |
562 | = make_scoped_restore (&info->stabsects, &stabsects); | |
563 | ||
c906108c | 564 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c5aa993b JM |
565 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
566 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
567 | stringtab_offset = symtab_offset + /* String table file offset */ | |
568 | num_symbols * cdata->local_symesz; | |
c906108c SS |
569 | |
570 | /* Set a few file-statics that give us specific information about | |
571 | the particular COFF file format we're reading. */ | |
c906108c SS |
572 | local_n_btmask = cdata->local_n_btmask; |
573 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 574 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 575 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
576 | local_linesz = cdata->local_linesz; |
577 | local_symesz = cdata->local_symesz; | |
578 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
579 | |
580 | /* Allocate space for raw symbol and aux entries, based on their | |
581 | space requirements as reported by BFD. */ | |
e2a03548 TT |
582 | gdb::def_vector<char> temp_storage (cdata->local_symesz |
583 | + cdata->local_auxesz); | |
584 | temp_sym = temp_storage.data (); | |
c906108c | 585 | temp_aux = temp_sym + cdata->local_symesz; |
c906108c SS |
586 | |
587 | /* We need to know whether this is a PE file, because in PE files, | |
588 | unlike standard COFF files, symbol values are stored as offsets | |
589 | from the section address, rather than as absolute addresses. | |
590 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
591 | this problem. */ | |
0d06e24b | 592 | pe_file = |
61012eef GB |
593 | startswith (bfd_get_target (objfile->obfd), "pe") |
594 | || startswith (bfd_get_target (objfile->obfd), "epoc-pe"); | |
c906108c | 595 | |
aff410f1 | 596 | /* End of warning. */ |
c906108c | 597 | |
c906108c SS |
598 | info->min_lineno_offset = 0; |
599 | info->max_lineno_offset = 0; | |
c906108c | 600 | |
ebeb39fe JB |
601 | /* Only read line number information if we have symbols. |
602 | ||
603 | On Windows NT, some of the system's DLL's have sections with | |
604 | PointerToLinenumbers fields that are non-zero, but point at | |
605 | random places within the image file. (In the case I found, | |
606 | KERNEL32.DLL's .text section has a line number info pointer that | |
607 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
608 | ||
609 | However, these DLL's also have no symbols. The line number | |
610 | tables are meaningless without symbols. And in fact, GDB never | |
611 | uses the line number information unless there are symbols. So we | |
612 | can avoid spurious error messages (and maybe run a little | |
613 | faster!) by not even reading the line number table unless we have | |
614 | symbols. */ | |
e2a03548 TT |
615 | scoped_restore restore_linetab = make_scoped_restore (&linetab); |
616 | gdb::unique_xmalloc_ptr<char> linetab_storage; | |
ebeb39fe JB |
617 | if (num_symbols > 0) |
618 | { | |
619 | /* Read the line number table, all at once. */ | |
620 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
621 | ||
ebeb39fe | 622 | val = init_lineno (abfd, info->min_lineno_offset, |
e2a03548 TT |
623 | info->max_lineno_offset - info->min_lineno_offset, |
624 | &linetab_storage); | |
ebeb39fe | 625 | if (val < 0) |
b926417a | 626 | error (_("\"%s\": error reading line numbers."), filename); |
ebeb39fe | 627 | } |
c906108c SS |
628 | |
629 | /* Now read the string table, all at once. */ | |
630 | ||
e2a03548 TT |
631 | scoped_restore restore_stringtab = make_scoped_restore (&stringtab); |
632 | gdb::unique_xmalloc_ptr<char> stringtab_storage; | |
633 | val = init_stringtab (abfd, stringtab_offset, &stringtab_storage); | |
c906108c | 634 | if (val < 0) |
b926417a | 635 | error (_("\"%s\": can't get string table"), filename); |
c906108c | 636 | |
d25e8719 | 637 | minimal_symbol_reader reader (objfile); |
c906108c SS |
638 | |
639 | /* Now that the executable file is positioned at symbol table, | |
640 | process it and define symbols accordingly. */ | |
641 | ||
8dddcb8f | 642 | coff_symtab_read (reader, (long) symtab_offset, num_symbols, objfile); |
c906108c | 643 | |
aff410f1 MS |
644 | /* Install any minimal symbols that have been collected as the |
645 | current minimal symbols for this objfile. */ | |
c906108c | 646 | |
d25e8719 | 647 | reader.install (); |
c906108c | 648 | |
303c5ee1 YQ |
649 | if (pe_file) |
650 | { | |
7932255d | 651 | for (minimal_symbol *msym : objfile->msymbols ()) |
303c5ee1 | 652 | { |
efd66ac6 | 653 | const char *name = MSYMBOL_LINKAGE_NAME (msym); |
303c5ee1 YQ |
654 | |
655 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
656 | or "_imp_", get rid of the prefix, and search the minimal | |
657 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
658 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
20d35291 | 659 | if (MSYMBOL_TYPE (msym) == mst_data) |
303c5ee1 | 660 | { |
20d35291 PA |
661 | const char *name1 = NULL; |
662 | ||
663 | if (startswith (name, "_imp_")) | |
664 | name1 = name + 5; | |
665 | else if (startswith (name, "__imp_")) | |
666 | name1 = name + 6; | |
667 | if (name1 != NULL) | |
668 | { | |
669 | int lead = bfd_get_symbol_leading_char (objfile->obfd); | |
670 | struct bound_minimal_symbol found; | |
671 | ||
672 | if (lead != '\0' && *name1 == lead) | |
673 | name1 += 1; | |
674 | ||
675 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
676 | ||
677 | /* If found, there are symbols named "_imp_foo" and "foo" | |
678 | respectively in OBJFILE. Set the type of symbol "foo" | |
679 | as 'mst_solib_trampoline'. */ | |
680 | if (found.minsym != NULL | |
681 | && MSYMBOL_TYPE (found.minsym) == mst_text) | |
682 | MSYMBOL_TYPE (found.minsym) = mst_solib_trampoline; | |
683 | } | |
303c5ee1 YQ |
684 | } |
685 | } | |
686 | } | |
687 | ||
97cbe998 SDJ |
688 | if (!(objfile->flags & OBJF_READNEVER)) |
689 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); | |
c906108c | 690 | |
e2a03548 | 691 | if (!info->stabsects->empty()) |
c906108c | 692 | { |
c5aa993b | 693 | if (!info->stabstrsect) |
b83266a0 | 694 | { |
3e43a32a MS |
695 | error (_("The debugging information in `%s' is corrupted.\nThe " |
696 | "file has a `.stabs' section, but no `.stabstr' section."), | |
b926417a | 697 | filename); |
b83266a0 SS |
698 | } |
699 | ||
c906108c | 700 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 701 | bfd_get_section_contents? */ |
c906108c SS |
702 | bfd_seek (abfd, abfd->where, 0); |
703 | ||
704 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
705 | ||
706 | coffstab_build_psymtabs (objfile, | |
c906108c | 707 | info->textaddr, info->textsize, |
e2a03548 | 708 | *info->stabsects, |
c906108c SS |
709 | info->stabstrsect->filepos, stabstrsize); |
710 | } | |
251d32d9 | 711 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
712 | { |
713 | /* DWARF2 sections. */ | |
f29dff0a | 714 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 715 | } |
c906108c | 716 | |
fea25152 BF |
717 | dwarf2_build_frame_info (objfile); |
718 | ||
9cce227f TG |
719 | /* Try to add separate debug file if no symbols table found. */ |
720 | if (!objfile_has_partial_symbols (objfile)) | |
721 | { | |
a8dbfd58 | 722 | std::string debugfile = find_separate_debug_file_by_buildid (objfile); |
9cce227f | 723 | |
a8dbfd58 | 724 | if (debugfile.empty ()) |
c74f7d1c | 725 | debugfile = find_separate_debug_file_by_debuglink (objfile); |
9cce227f | 726 | |
a8dbfd58 | 727 | if (!debugfile.empty ()) |
9cce227f | 728 | { |
b926417a | 729 | gdb_bfd_ref_ptr debug_bfd (symfile_bfd_open (debugfile.c_str ())); |
c5504eaf | 730 | |
b926417a | 731 | symbol_file_add_separate (debug_bfd.get (), debugfile.c_str (), |
a8dbfd58 | 732 | symfile_flags, objfile); |
9cce227f TG |
733 | } |
734 | } | |
c906108c SS |
735 | } |
736 | ||
737 | static void | |
fba45db2 | 738 | coff_new_init (struct objfile *ignore) |
c906108c SS |
739 | { |
740 | } | |
741 | ||
aff410f1 MS |
742 | /* Perform any local cleanups required when we are done with a |
743 | particular objfile. I.E, we are in the process of discarding all | |
744 | symbol information for an objfile, freeing up all memory held for | |
745 | it, and unlinking the objfile struct from the global list of known | |
746 | objfiles. */ | |
c906108c SS |
747 | |
748 | static void | |
fba45db2 | 749 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 750 | { |
aff410f1 | 751 | /* Let stabs reader clean up. */ |
7be570e7 | 752 | stabsread_clear_cache (); |
c906108c | 753 | } |
c906108c | 754 | \f |
c5aa993b | 755 | |
c906108c SS |
756 | /* Given pointers to a symbol table in coff style exec file, |
757 | analyze them and create struct symtab's describing the symbols. | |
758 | NSYMS is the number of symbols in the symbol table. | |
759 | We read them one at a time using read_one_sym (). */ | |
760 | ||
761 | static void | |
8dddcb8f TT |
762 | coff_symtab_read (minimal_symbol_reader &reader, |
763 | long symtab_offset, unsigned int nsyms, | |
fba45db2 | 764 | struct objfile *objfile) |
c906108c | 765 | { |
5e2b427d | 766 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
875e5398 | 767 | struct context_stack *newobj = nullptr; |
c906108c | 768 | struct coff_symbol coff_symbol; |
52f0bd74 | 769 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
770 | static struct internal_syment main_sym; |
771 | static union internal_auxent main_aux; | |
772 | struct coff_symbol fcn_cs_saved; | |
773 | static struct internal_syment fcn_sym_saved; | |
774 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
775 | /* A .file is open. */ |
776 | int in_source_file = 0; | |
777 | int next_file_symnum = -1; | |
778 | /* Name of the current file. */ | |
9f37bbcc | 779 | const char *filestring = ""; |
c906108c SS |
780 | int depth = 0; |
781 | int fcn_first_line = 0; | |
b9179dbc | 782 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
783 | int fcn_last_line = 0; |
784 | int fcn_start_addr = 0; | |
785 | long fcn_line_ptr = 0; | |
786 | int val; | |
787 | CORE_ADDR tmpaddr; | |
05cfdb42 | 788 | struct minimal_symbol *msym; |
c906108c | 789 | |
4735f0ed TT |
790 | scoped_free_pendings free_pending; |
791 | ||
c906108c | 792 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
aff410f1 MS |
793 | it's hard to know I've really worked around it. The fix should |
794 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
795 | fread (in read_one_sym), will (in my example) actually get data |
796 | from file offset 268, when the fseek was to 264 (and ftell shows | |
797 | 264). This causes all hell to break loose. I was unable to | |
798 | reproduce this on a short test program which operated on the same | |
799 | file, performing (I think) the same sequence of operations. | |
800 | ||
801 | It stopped happening when I put in this (former) rewind(). | |
802 | ||
803 | FIXME: Find out if this has been reported to Sun, whether it has | |
804 | been fixed in a later release, etc. */ | |
805 | ||
806 | bfd_seek (objfile->obfd, 0, 0); | |
807 | ||
aff410f1 | 808 | /* Position to read the symbol table. */ |
c906108c SS |
809 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
810 | if (val < 0) | |
4262abfb | 811 | perror_with_name (objfile_name (objfile)); |
c906108c | 812 | |
dd707e8e | 813 | coffread_objfile = objfile; |
c906108c SS |
814 | nlist_bfd_global = objfile->obfd; |
815 | nlist_nsyms_global = nsyms; | |
46212e0b | 816 | set_last_source_file (NULL); |
c906108c SS |
817 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
818 | ||
aff410f1 | 819 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 820 | xfree (type_vector); |
fc474241 | 821 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 822 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 823 | |
4d663531 | 824 | coff_start_symtab (objfile, ""); |
c906108c SS |
825 | |
826 | symnum = 0; | |
827 | while (symnum < nsyms) | |
828 | { | |
829 | QUIT; /* Make this command interruptable. */ | |
830 | ||
831 | read_one_sym (cs, &main_sym, &main_aux); | |
832 | ||
833 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
834 | { | |
46212e0b | 835 | if (get_last_source_file ()) |
c906108c SS |
836 | coff_end_symtab (objfile); |
837 | ||
4d663531 | 838 | coff_start_symtab (objfile, "_globals_"); |
969107c5 EZ |
839 | /* coff_start_symtab will set the language of this symtab to |
840 | language_unknown, since such a ``file name'' is not | |
841 | recognized. Override that with the minimal language to | |
842 | allow printing values in this symtab. */ | |
3c65e5b3 | 843 | get_current_subfile ()->language = language_minimal; |
c906108c | 844 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
845 | /* Done with all files, everything from here on out is |
846 | globals. */ | |
c906108c SS |
847 | } |
848 | ||
aff410f1 MS |
849 | /* Special case for file with type declarations only, no |
850 | text. */ | |
46212e0b | 851 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
852 | && cs->c_secnum == N_DEBUG) |
853 | complete_symtab (filestring, 0, 0); | |
854 | ||
855 | /* Typedefs should not be treated as symbol definitions. */ | |
856 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
857 | { | |
aff410f1 MS |
858 | /* Record all functions -- external and static -- in |
859 | minsyms. */ | |
fbcebcb1 | 860 | int section = cs_to_section (cs, objfile); |
c5504eaf | 861 | |
2273f0ac | 862 | tmpaddr = cs->c_value; |
156f2366 EZ |
863 | /* Don't record unresolved symbols. */ |
864 | if (!(cs->c_secnum <= 0 && cs->c_value == 0)) | |
865 | record_minimal_symbol (reader, cs, tmpaddr, mst_text, | |
866 | section, objfile); | |
c906108c SS |
867 | |
868 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
869 | fcn_start_addr = tmpaddr; | |
870 | fcn_cs_saved = *cs; | |
871 | fcn_sym_saved = main_sym; | |
872 | fcn_aux_saved = main_aux; | |
873 | continue; | |
874 | } | |
875 | ||
876 | switch (cs->c_sclass) | |
877 | { | |
c5aa993b JM |
878 | case C_EFCN: |
879 | case C_EXTDEF: | |
880 | case C_ULABEL: | |
881 | case C_USTATIC: | |
882 | case C_LINE: | |
883 | case C_ALIAS: | |
884 | case C_HIDDEN: | |
b98664d3 | 885 | complaint (_("Bad n_sclass for symbol %s"), |
23136709 | 886 | cs->c_name); |
c5aa993b | 887 | break; |
c906108c | 888 | |
c5aa993b | 889 | case C_FILE: |
aff410f1 MS |
890 | /* c_value field contains symnum of next .file entry in |
891 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
892 | next_file_symnum = cs->c_value; |
893 | if (cs->c_naux > 0) | |
894 | filestring = coff_getfilename (&main_aux); | |
895 | else | |
896 | filestring = ""; | |
897 | ||
898 | /* Complete symbol table for last object file | |
899 | containing debugging information. */ | |
46212e0b | 900 | if (get_last_source_file ()) |
c5aa993b JM |
901 | { |
902 | coff_end_symtab (objfile); | |
4d663531 | 903 | coff_start_symtab (objfile, filestring); |
c5aa993b JM |
904 | } |
905 | in_source_file = 1; | |
906 | break; | |
c906108c | 907 | |
aff410f1 MS |
908 | /* C_LABEL is used for labels and static functions. |
909 | Including it here allows gdb to see static functions when | |
910 | no debug info is available. */ | |
c5aa993b | 911 | case C_LABEL: |
aff410f1 MS |
912 | /* However, labels within a function can make weird |
913 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
914 | if (within_function) |
915 | break; | |
565e0eda | 916 | /* Fall through. */ |
c5aa993b JM |
917 | case C_STAT: |
918 | case C_THUMBLABEL: | |
919 | case C_THUMBSTAT: | |
920 | case C_THUMBSTATFUNC: | |
921 | if (cs->c_name[0] == '.') | |
922 | { | |
7ecb6532 | 923 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 924 | { |
aff410f1 MS |
925 | /* FIXME: don't wire in ".text" as section name or |
926 | symbol name! */ | |
927 | /* Check for in_source_file deals with case of a | |
928 | file with debugging symbols followed by a later | |
929 | file with no symbols. */ | |
c906108c SS |
930 | if (in_source_file) |
931 | complete_symtab (filestring, | |
aff410f1 MS |
932 | cs->c_value + ANOFFSET (objfile->section_offsets, |
933 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
934 | main_aux.x_scn.x_scnlen); |
935 | in_source_file = 0; | |
936 | } | |
aff410f1 | 937 | /* Flush rest of '.' symbols. */ |
c906108c | 938 | break; |
c5aa993b JM |
939 | } |
940 | else if (!SDB_TYPE (cs->c_type) | |
941 | && cs->c_name[0] == 'L' | |
61012eef GB |
942 | && (startswith (cs->c_name, "LI%") |
943 | || startswith (cs->c_name, "LF%") | |
944 | || startswith (cs->c_name, "LC%") | |
945 | || startswith (cs->c_name, "LP%") | |
946 | || startswith (cs->c_name, "LPB%") | |
947 | || startswith (cs->c_name, "LBB%") | |
948 | || startswith (cs->c_name, "LBE%") | |
949 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
950 | /* At least on a 3b1, gcc generates swbeg and string labels |
951 | that look like this. Ignore them. */ | |
952 | break; | |
86a73007 TT |
953 | /* For static symbols that don't start with '.'... */ |
954 | /* Fall through. */ | |
c5aa993b JM |
955 | case C_THUMBEXT: |
956 | case C_THUMBEXTFUNC: | |
957 | case C_EXT: | |
958 | { | |
959 | /* Record it in the minimal symbols regardless of | |
960 | SDB_TYPE. This parallels what we do for other debug | |
961 | formats, and probably is needed to make | |
962 | print_address_symbolic work right without the (now | |
963 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 964 | |
c5aa993b JM |
965 | enum minimal_symbol_type ms_type; |
966 | int sec; | |
2273f0ac | 967 | CORE_ADDR offset = 0; |
c906108c | 968 | |
c5aa993b JM |
969 | if (cs->c_secnum == N_UNDEF) |
970 | { | |
d4862372 JB |
971 | /* This is a common symbol. We used to rely on |
972 | the target to tell us whether it knows where | |
973 | the symbol has been relocated to, but none of | |
974 | the target implementations actually provided | |
975 | that operation. So we just ignore the symbol, | |
976 | the same way we would do if we had a target-side | |
977 | symbol lookup which returned no match. */ | |
978 | break; | |
c5aa993b | 979 | } |
182d43bc EZ |
980 | else if (cs->c_secnum == N_ABS) |
981 | { | |
982 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 983 | relocate) for absolute values. */ |
182d43bc EZ |
984 | ms_type = mst_abs; |
985 | sec = cs_to_section (cs, objfile); | |
986 | tmpaddr = cs->c_value; | |
987 | } | |
c5aa993b JM |
988 | else |
989 | { | |
05cfdb42 | 990 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 991 | |
c5aa993b JM |
992 | sec = cs_to_section (cs, objfile); |
993 | tmpaddr = cs->c_value; | |
aff410f1 | 994 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
995 | if (cs->c_sclass == C_EXT |
996 | || cs->c_sclass == C_THUMBEXTFUNC | |
997 | || cs->c_sclass == C_THUMBEXT | |
998 | || (pe_file && (cs->c_sclass == C_STAT))) | |
2273f0ac | 999 | offset = ANOFFSET (objfile->section_offsets, sec); |
c906108c | 1000 | |
05cfdb42 | 1001 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 1002 | { |
c5aa993b JM |
1003 | ms_type = |
1004 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
1005 | || cs->c_sclass == C_THUMBEXT ? | |
1006 | mst_text : mst_file_text; | |
85ddcc70 | 1007 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 1008 | } |
05cfdb42 DJ |
1009 | else if (bfd_section->flags & SEC_ALLOC |
1010 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1011 | { |
c5aa993b | 1012 | ms_type = |
aff410f1 MS |
1013 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1014 | ? mst_data : mst_file_data; | |
34e924c0 | 1015 | } |
05cfdb42 | 1016 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1017 | { |
c5aa993b | 1018 | ms_type = |
aff410f1 MS |
1019 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1020 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1021 | } |
1022 | else | |
1023 | ms_type = mst_unknown; | |
c5aa993b | 1024 | } |
c906108c | 1025 | |
8dddcb8f | 1026 | msym = record_minimal_symbol (reader, cs, tmpaddr, ms_type, |
aff410f1 | 1027 | sec, objfile); |
05cfdb42 | 1028 | if (msym) |
aff410f1 MS |
1029 | gdbarch_coff_make_msymbol_special (gdbarch, |
1030 | cs->c_sclass, msym); | |
fbcebcb1 | 1031 | |
c5aa993b JM |
1032 | if (SDB_TYPE (cs->c_type)) |
1033 | { | |
1034 | struct symbol *sym; | |
c5504eaf | 1035 | |
c5aa993b | 1036 | sym = process_coff_symbol |
96baa820 | 1037 | (cs, &main_aux, objfile); |
2273f0ac | 1038 | SYMBOL_VALUE (sym) = tmpaddr + offset; |
c5aa993b JM |
1039 | SYMBOL_SECTION (sym) = sec; |
1040 | } | |
1041 | } | |
1042 | break; | |
1043 | ||
1044 | case C_FCN: | |
7ecb6532 | 1045 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1046 | { |
1047 | within_function = 1; | |
1048 | ||
aff410f1 MS |
1049 | /* Value contains address of first non-init type |
1050 | code. */ | |
c5aa993b | 1051 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1052 | contains line number of '{' }. */ |
c5aa993b | 1053 | if (cs->c_naux != 1) |
b98664d3 | 1054 | complaint (_("`.bf' symbol %d has no aux entry"), |
aff410f1 | 1055 | cs->c_symnum); |
c5aa993b JM |
1056 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1057 | fcn_first_line_addr = cs->c_value; | |
1058 | ||
1059 | /* Might want to check that locals are 0 and | |
1060 | context_stack_depth is zero, and complain if not. */ | |
1061 | ||
1062 | depth = 0; | |
fe978cb0 | 1063 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1064 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1065 | newobj->name = |
aff410f1 MS |
1066 | process_coff_symbol (&fcn_cs_saved, |
1067 | &fcn_aux_saved, objfile); | |
c5aa993b | 1068 | } |
7ecb6532 | 1069 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1070 | { |
b9179dbc | 1071 | if (!within_function) |
8a3fe4f8 | 1072 | error (_("Bad coff function information.")); |
aff410f1 | 1073 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1074 | not useful for gdb. */ |
1075 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1076 | contains number of lines to '}' */ | |
1077 | ||
edb0470b | 1078 | if (outermost_context_p ()) |
aff410f1 | 1079 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1080 | complaint (_("`.ef' symbol without matching `.bf' " |
3e43a32a | 1081 | "symbol ignored starting at symnum %d"), |
23136709 | 1082 | cs->c_symnum); |
c5aa993b JM |
1083 | within_function = 0; |
1084 | break; | |
c906108c | 1085 | } |
c5aa993b | 1086 | |
a60f3166 | 1087 | struct context_stack cstk = pop_context (); |
c5aa993b | 1088 | /* Stack must be empty now. */ |
edb0470b | 1089 | if (!outermost_context_p () || newobj == NULL) |
c906108c | 1090 | { |
b98664d3 | 1091 | complaint (_("Unmatched .ef symbol(s) ignored " |
3e43a32a | 1092 | "starting at symnum %d"), |
23136709 | 1093 | cs->c_symnum); |
c5aa993b JM |
1094 | within_function = 0; |
1095 | break; | |
c906108c | 1096 | } |
c5aa993b JM |
1097 | if (cs->c_naux != 1) |
1098 | { | |
b98664d3 | 1099 | complaint (_("`.ef' symbol %d has no aux entry"), |
aff410f1 | 1100 | cs->c_symnum); |
c5aa993b JM |
1101 | fcn_last_line = 0x7FFFFFFF; |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1106 | } | |
1107 | /* fcn_first_line is the line number of the opening '{'. | |
1108 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1109 | of the line number of the first statement of the |
1110 | function - except for one-line functions, for which | |
1111 | it is also the line number of all the statements and | |
1112 | of the closing '}', and for which we do not have any | |
1113 | other statement-line-number. */ | |
c5aa993b | 1114 | if (fcn_last_line == 1) |
3c65e5b3 | 1115 | record_line (get_current_subfile (), fcn_first_line, |
fbf65064 UW |
1116 | gdbarch_addr_bits_remove (gdbarch, |
1117 | fcn_first_line_addr)); | |
c5aa993b | 1118 | else |
aff410f1 MS |
1119 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1120 | fcn_last_line, objfile); | |
c906108c | 1121 | |
c233e9c6 | 1122 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1123 | NULL, cstk.start_addr, |
c5aa993b JM |
1124 | fcn_cs_saved.c_value |
1125 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 | 1126 | + ANOFFSET (objfile->section_offsets, |
4d663531 | 1127 | SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1128 | within_function = 0; |
1129 | } | |
1130 | break; | |
c906108c | 1131 | |
c5aa993b | 1132 | case C_BLOCK: |
7ecb6532 | 1133 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1134 | { |
1135 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1136 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1137 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1138 | push_context (++depth, tmpaddr); |
1139 | } | |
7ecb6532 | 1140 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b | 1141 | { |
edb0470b | 1142 | if (outermost_context_p ()) |
0963b4bd | 1143 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1144 | complaint (_("`.eb' symbol without matching `.bb' " |
3e43a32a | 1145 | "symbol ignored starting at symnum %d"), |
23136709 | 1146 | cs->c_symnum); |
c5aa993b JM |
1147 | break; |
1148 | } | |
c906108c | 1149 | |
a60f3166 TT |
1150 | struct context_stack cstk = pop_context (); |
1151 | if (depth-- != cstk.depth) | |
c5aa993b | 1152 | { |
b98664d3 | 1153 | complaint (_("Mismatched .eb symbol ignored " |
3e43a32a | 1154 | "starting at symnum %d"), |
23136709 | 1155 | symnum); |
c5aa993b JM |
1156 | break; |
1157 | } | |
e148f09d | 1158 | if (*get_local_symbols () && !outermost_context_p ()) |
c5aa993b JM |
1159 | { |
1160 | tmpaddr = | |
aff410f1 MS |
1161 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1162 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1163 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1164 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 1165 | cstk.start_addr, tmpaddr); |
c5aa993b JM |
1166 | } |
1167 | /* Now pop locals of block just finished. */ | |
e148f09d | 1168 | *get_local_symbols () = cstk.locals; |
c5aa993b JM |
1169 | } |
1170 | break; | |
c906108c | 1171 | |
c5aa993b | 1172 | default: |
96baa820 | 1173 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1174 | break; |
c906108c SS |
1175 | } |
1176 | } | |
1177 | ||
1b6bc7e0 CF |
1178 | if ((nsyms == 0) && (pe_file)) |
1179 | { | |
c2f20dd6 | 1180 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1181 | executable, so try to read the export table. */ |
8dddcb8f | 1182 | read_pe_exported_syms (reader, objfile); |
1b6bc7e0 CF |
1183 | } |
1184 | ||
46212e0b | 1185 | if (get_last_source_file ()) |
c906108c SS |
1186 | coff_end_symtab (objfile); |
1187 | ||
1188 | /* Patch up any opaque types (references to types that are not defined | |
1189 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 | 1190 | { |
b669c953 | 1191 | for (compunit_symtab *cu : objfile->compunits ()) |
d5da8b3c TT |
1192 | { |
1193 | for (symtab *s : compunit_filetabs (cu)) | |
1194 | patch_opaque_types (s); | |
1195 | } | |
43f3e411 | 1196 | } |
c906108c | 1197 | |
dd707e8e | 1198 | coffread_objfile = NULL; |
c906108c SS |
1199 | } |
1200 | \f | |
1201 | /* Routines for reading headers and symbols from executable. */ | |
1202 | ||
aff410f1 MS |
1203 | /* Read the next symbol, swap it, and return it in both |
1204 | internal_syment form, and coff_symbol form. Also return its first | |
1205 | auxent, if any, in internal_auxent form, and skip any other | |
1206 | auxents. */ | |
c906108c SS |
1207 | |
1208 | static void | |
aa1ee363 AC |
1209 | read_one_sym (struct coff_symbol *cs, |
1210 | struct internal_syment *sym, | |
1211 | union internal_auxent *aux) | |
c906108c SS |
1212 | { |
1213 | int i; | |
3b016d57 | 1214 | bfd_size_type bytes; |
c906108c SS |
1215 | |
1216 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1217 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1218 | if (bytes != local_symesz) | |
4262abfb | 1219 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1220 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1221 | cs->c_naux = sym->n_numaux & 0xff; |
1222 | if (cs->c_naux >= 1) | |
1223 | { | |
3b016d57 DJ |
1224 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1225 | if (bytes != local_auxesz) | |
4262abfb | 1226 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1227 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1228 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1229 | 0, cs->c_naux, (char *) aux); |
1230 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1231 | is important). */ |
c5aa993b | 1232 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1233 | { |
1234 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1235 | if (bytes != local_auxesz) | |
4262abfb JK |
1236 | error (_("%s: error reading symbols"), |
1237 | objfile_name (coffread_objfile)); | |
3b016d57 | 1238 | } |
c906108c SS |
1239 | } |
1240 | cs->c_name = getsymname (sym); | |
1241 | cs->c_value = sym->n_value; | |
1242 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1243 | cs->c_secnum = sym->n_scnum; | |
1244 | cs->c_type = (unsigned) sym->n_type; | |
1245 | if (!SDB_TYPE (cs->c_type)) | |
1246 | cs->c_type = 0; | |
1247 | ||
1248 | #if 0 | |
1249 | if (cs->c_sclass & 128) | |
3d263c1d | 1250 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1251 | #endif |
1252 | ||
1253 | symnum += 1 + cs->c_naux; | |
1254 | ||
1255 | /* The PE file format stores symbol values as offsets within the | |
1256 | section, rather than as absolute addresses. We correct that | |
1257 | here, if the symbol has an appropriate storage class. FIXME: We | |
1258 | should use BFD to read the symbols, rather than duplicating the | |
1259 | work here. */ | |
1260 | if (pe_file) | |
1261 | { | |
1262 | switch (cs->c_sclass) | |
1263 | { | |
1264 | case C_EXT: | |
1265 | case C_THUMBEXT: | |
1266 | case C_THUMBEXTFUNC: | |
1267 | case C_SECTION: | |
1268 | case C_NT_WEAK: | |
1269 | case C_STAT: | |
1270 | case C_THUMBSTAT: | |
1271 | case C_THUMBSTATFUNC: | |
1272 | case C_LABEL: | |
1273 | case C_THUMBLABEL: | |
1274 | case C_BLOCK: | |
1275 | case C_FCN: | |
1276 | case C_EFCN: | |
1277 | if (cs->c_secnum != 0) | |
1278 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1279 | break; | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | \f | |
aff410f1 | 1284 | /* Support for string table handling. */ |
c906108c | 1285 | |
c906108c | 1286 | static int |
e2a03548 | 1287 | init_stringtab (bfd *abfd, long offset, gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1288 | { |
1289 | long length; | |
1290 | int val; | |
1291 | unsigned char lengthbuf[4]; | |
1292 | ||
c906108c | 1293 | /* If the file is stripped, the offset might be zero, indicating no |
aff410f1 | 1294 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1295 | if (offset == 0) |
1296 | return 0; | |
1297 | ||
1298 | if (bfd_seek (abfd, offset, 0) < 0) | |
1299 | return -1; | |
1300 | ||
3a42e9d0 | 1301 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1302 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1303 | |
c906108c | 1304 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1305 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1306 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1307 | return 0; | |
1308 | ||
e2a03548 TT |
1309 | storage->reset ((char *) xmalloc (length)); |
1310 | stringtab = storage->get (); | |
aff410f1 MS |
1311 | /* This is in target format (probably not very useful, and not |
1312 | currently used), not host format. */ | |
c906108c | 1313 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1314 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1315 | return 0; |
1316 | ||
aff410f1 MS |
1317 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1318 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1319 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1320 | return -1; | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
c906108c | 1325 | static char * |
fba45db2 | 1326 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1327 | { |
c5aa993b | 1328 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1329 | char *result; |
1330 | ||
1331 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1332 | { | |
1333 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1334 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1335 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1340 | buffer[SYMNMLEN] = '\0'; | |
1341 | result = buffer; | |
1342 | } | |
1343 | return result; | |
1344 | } | |
1345 | ||
aff410f1 MS |
1346 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1347 | Return only the last component of the name. Result is in static | |
1348 | storage and is only good for temporary use. */ | |
c906108c | 1349 | |
9f37bbcc | 1350 | static const char * |
fba45db2 | 1351 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1352 | { |
1353 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1354 | const char *result; |
c906108c SS |
1355 | |
1356 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1357 | { |
1358 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1359 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1360 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1361 | } | |
c906108c SS |
1362 | else |
1363 | { | |
1364 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1365 | buffer[FILNMLEN] = '\0'; | |
1366 | } | |
1367 | result = buffer; | |
1368 | ||
1369 | /* FIXME: We should not be throwing away the information about what | |
1370 | directory. It should go into dirname of the symtab, or some such | |
1371 | place. */ | |
9f37bbcc | 1372 | result = lbasename (result); |
c906108c SS |
1373 | return (result); |
1374 | } | |
1375 | \f | |
1376 | /* Support for line number handling. */ | |
1377 | ||
c906108c SS |
1378 | /* Read in all the line numbers for fast lookups later. Leave them in |
1379 | external (unswapped) format in memory; we'll swap them as we enter | |
1380 | them into GDB's data structures. */ | |
c5aa993b | 1381 | |
c906108c | 1382 | static int |
e2a03548 TT |
1383 | init_lineno (bfd *abfd, long offset, int size, |
1384 | gdb::unique_xmalloc_ptr<char> *storage) | |
c906108c SS |
1385 | { |
1386 | int val; | |
1387 | ||
1388 | linetab_offset = offset; | |
1389 | linetab_size = size; | |
1390 | ||
c906108c SS |
1391 | if (size == 0) |
1392 | return 0; | |
1393 | ||
1394 | if (bfd_seek (abfd, offset, 0) < 0) | |
1395 | return -1; | |
c5aa993b | 1396 | |
aff410f1 | 1397 | /* Allocate the desired table, plus a sentinel. */ |
e2a03548 TT |
1398 | storage->reset ((char *) xmalloc (size + local_linesz)); |
1399 | linetab = storage->get (); | |
c906108c | 1400 | |
e2a03548 | 1401 | val = bfd_bread (storage->get (), size, abfd); |
c906108c SS |
1402 | if (val != size) |
1403 | return -1; | |
1404 | ||
aff410f1 | 1405 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1406 | memset (linetab + size, 0, local_linesz); |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
c906108c SS |
1411 | #if !defined (L_LNNO32) |
1412 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1413 | #endif | |
1414 | ||
1415 | static void | |
aa1ee363 AC |
1416 | enter_linenos (long file_offset, int first_line, |
1417 | int last_line, struct objfile *objfile) | |
c906108c | 1418 | { |
fbf65064 | 1419 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1420 | char *rawptr; |
c906108c SS |
1421 | struct internal_lineno lptr; |
1422 | ||
1423 | if (!linetab) | |
c5aa993b | 1424 | return; |
c906108c SS |
1425 | if (file_offset < linetab_offset) |
1426 | { | |
b98664d3 | 1427 | complaint (_("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1428 | file_offset); |
aff410f1 | 1429 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1430 | return; |
aff410f1 MS |
1431 | file_offset += linetab_offset; /* Try reading at that linetab |
1432 | offset. */ | |
c906108c | 1433 | } |
c5aa993b | 1434 | |
c906108c SS |
1435 | rawptr = &linetab[file_offset - linetab_offset]; |
1436 | ||
aff410f1 | 1437 | /* Skip first line entry for each function. */ |
c906108c | 1438 | rawptr += local_linesz; |
aff410f1 | 1439 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1440 | first_line--; |
1441 | ||
e6a8a7d2 EZ |
1442 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1443 | info), the next function's L_LNNO32 might not be zero, so don't | |
1444 | overstep the table's end in any case. */ | |
1445 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1446 | { |
1447 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1448 | rawptr += local_linesz; | |
e6a8a7d2 | 1449 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1450 | we exit. */ |
c5aa993b | 1451 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1452 | { |
1453 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1454 | addr += ANOFFSET (objfile->section_offsets, |
1455 | SECT_OFF_TEXT (objfile)); | |
3c65e5b3 | 1456 | record_line (get_current_subfile (), |
aff410f1 | 1457 | first_line + L_LNNO32 (&lptr), |
fbf65064 UW |
1458 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1459 | } | |
c5aa993b JM |
1460 | else |
1461 | break; | |
1462 | } | |
c906108c SS |
1463 | } |
1464 | \f | |
1465 | static void | |
fba45db2 | 1466 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1467 | { |
52f0bd74 AC |
1468 | struct type *target = TYPE_TARGET_TYPE (type); |
1469 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1470 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1471 | ||
1472 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1473 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1474 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1475 | field_size); | |
c906108c | 1476 | |
aff410f1 MS |
1477 | memcpy (TYPE_FIELDS (target), |
1478 | TYPE_FIELDS (real_target), | |
1479 | field_size); | |
c906108c SS |
1480 | |
1481 | if (TYPE_NAME (real_target)) | |
1482 | { | |
0d5cff50 DE |
1483 | /* The previous copy of TYPE_NAME is allocated by |
1484 | process_coff_symbol. */ | |
c906108c | 1485 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1486 | xfree ((char*) TYPE_NAME (target)); |
1487 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1488 | } |
1489 | } | |
1490 | ||
1491 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1492 | so that they can be used to print out opaque data structures |
1493 | properly. */ | |
c906108c SS |
1494 | |
1495 | static void | |
fba45db2 | 1496 | patch_opaque_types (struct symtab *s) |
c906108c | 1497 | { |
52f0bd74 | 1498 | struct block *b; |
8157b174 | 1499 | struct block_iterator iter; |
52f0bd74 | 1500 | struct symbol *real_sym; |
c5aa993b | 1501 | |
aff410f1 | 1502 | /* Go through the per-file symbols only. */ |
439247b6 | 1503 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1504 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1505 | { |
1506 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1507 | Remove syms from the chain when their types are stored, |
1508 | but search the whole chain, as there may be several syms | |
1509 | from different files with the same name. */ | |
5aafa1cc PM |
1510 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1511 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1512 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1513 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1514 | { |
0d5cff50 | 1515 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1516 | int hash = hashname (name); |
1517 | struct symbol *sym, *prev; | |
c5aa993b | 1518 | |
c906108c SS |
1519 | prev = 0; |
1520 | for (sym = opaque_type_chain[hash]; sym;) | |
1521 | { | |
5aafa1cc PM |
1522 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1523 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1524 | { |
1525 | if (prev) | |
1526 | { | |
1527 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1532 | } | |
c5aa993b | 1533 | |
c906108c | 1534 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1535 | |
c906108c SS |
1536 | if (prev) |
1537 | { | |
1538 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1539 | } | |
1540 | else | |
1541 | { | |
1542 | sym = opaque_type_chain[hash]; | |
1543 | } | |
1544 | } | |
1545 | else | |
1546 | { | |
1547 | prev = sym; | |
1548 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1549 | } | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | \f | |
768a979c UW |
1555 | static int |
1556 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1557 | { | |
1558 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1559 | } | |
1560 | ||
1561 | static const struct symbol_register_ops coff_register_funcs = { | |
1562 | coff_reg_to_regnum | |
1563 | }; | |
1564 | ||
f1e6e072 TT |
1565 | /* The "aclass" index for computed COFF symbols. */ |
1566 | ||
1567 | static int coff_register_index; | |
1568 | ||
c906108c | 1569 | static struct symbol * |
aa1ee363 AC |
1570 | process_coff_symbol (struct coff_symbol *cs, |
1571 | union internal_auxent *aux, | |
fba45db2 | 1572 | struct objfile *objfile) |
c906108c | 1573 | { |
e623cf5d | 1574 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1575 | char *name; |
1576 | ||
c906108c SS |
1577 | name = cs->c_name; |
1578 | name = EXTERNAL_NAME (name, objfile->obfd); | |
3c65e5b3 | 1579 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
f85f34ed | 1580 | &objfile->objfile_obstack); |
04a679b8 | 1581 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1582 | |
1583 | /* default assumptions */ | |
1584 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1585 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1586 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1587 | ||
1588 | if (ISFCN (cs->c_type)) | |
1589 | { | |
aff410f1 MS |
1590 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1591 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1592 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1593 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1594 | aux, objfile)); | |
c906108c | 1595 | |
f1e6e072 | 1596 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1597 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1598 | || cs->c_sclass == C_THUMBSTATFUNC) | |
e148f09d | 1599 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1600 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1601 | || cs->c_sclass == C_THUMBEXTFUNC) | |
e148f09d | 1602 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1603 | } |
1604 | else | |
1605 | { | |
5e2b427d | 1606 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1607 | switch (cs->c_sclass) |
1608 | { | |
c5aa993b JM |
1609 | case C_NULL: |
1610 | break; | |
c906108c | 1611 | |
c5aa993b | 1612 | case C_AUTO: |
f1e6e072 | 1613 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
e148f09d | 1614 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1615 | break; |
c906108c | 1616 | |
c5aa993b JM |
1617 | case C_THUMBEXT: |
1618 | case C_THUMBEXTFUNC: | |
1619 | case C_EXT: | |
f1e6e072 | 1620 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1621 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1622 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1623 | SECT_OFF_TEXT (objfile)); | |
e148f09d | 1624 | add_symbol_to_list (sym, get_global_symbols ()); |
c5aa993b | 1625 | break; |
c906108c | 1626 | |
c5aa993b JM |
1627 | case C_THUMBSTAT: |
1628 | case C_THUMBSTATFUNC: | |
1629 | case C_STAT: | |
f1e6e072 | 1630 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1631 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1632 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1633 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1634 | if (within_function) |
1635 | { | |
aff410f1 | 1636 | /* Static symbol of local scope. */ |
e148f09d | 1637 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1638 | } |
c5aa993b JM |
1639 | else |
1640 | { | |
aff410f1 | 1641 | /* Static symbol at top level of file. */ |
e148f09d | 1642 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c | 1643 | } |
c5aa993b | 1644 | break; |
c906108c SS |
1645 | |
1646 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1647 | case C_GLBLREG: |
c906108c | 1648 | #endif |
c5aa993b | 1649 | case C_REG: |
f1e6e072 | 1650 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1651 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1652 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1653 | break; |
c906108c | 1654 | |
c5aa993b JM |
1655 | case C_THUMBLABEL: |
1656 | case C_LABEL: | |
1657 | break; | |
c906108c | 1658 | |
c5aa993b | 1659 | case C_ARG: |
f1e6e072 | 1660 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1661 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e148f09d | 1662 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1663 | break; |
c906108c | 1664 | |
c5aa993b | 1665 | case C_REGPARM: |
f1e6e072 | 1666 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1667 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1668 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1669 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1670 | break; |
c906108c | 1671 | |
c5aa993b | 1672 | case C_TPDEF: |
f1e6e072 | 1673 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1674 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1675 | |
0963b4bd | 1676 | /* If type has no name, give it one. */ |
c5aa993b JM |
1677 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1678 | { | |
1679 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1680 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1681 | { | |
aff410f1 MS |
1682 | /* If we are giving a name to a type such as |
1683 | "pointer to foo" or "function returning foo", we | |
1684 | better not set the TYPE_NAME. If the program | |
1685 | contains "typedef char *caddr_t;", we don't want | |
1686 | all variables of type char * to print as caddr_t. | |
1687 | This is not just a consequence of GDB's type | |
1688 | management; CC and GCC (at least through version | |
1689 | 2.4) both output variables of either type char * | |
1690 | or caddr_t with the type refering to the C_TPDEF | |
1691 | symbol for caddr_t. If a future compiler cleans | |
1692 | this up it GDB is not ready for it yet, but if it | |
1693 | becomes ready we somehow need to disable this | |
1694 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1695 | |
1696 | Sigh. | |
1697 | ||
1698 | Fortunately, this check seems not to be necessary | |
1699 | for anything except pointers or functions. */ | |
1700 | ; | |
1701 | } | |
1702 | else | |
1703 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1704 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1705 | } |
c906108c | 1706 | |
aff410f1 MS |
1707 | /* Keep track of any type which points to empty structured |
1708 | type, so it can be filled from a definition from another | |
1709 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1710 | not an empty structured type, though; the forward | |
1711 | references work themselves out via the magic of | |
1712 | coff_lookup_type. */ | |
5aafa1cc PM |
1713 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1714 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1715 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1716 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1717 | { |
3567439c | 1718 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1719 | |
c5aa993b JM |
1720 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1721 | opaque_type_chain[i] = sym; | |
1722 | } | |
e148f09d | 1723 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1724 | break; |
c906108c | 1725 | |
c5aa993b JM |
1726 | case C_STRTAG: |
1727 | case C_UNTAG: | |
1728 | case C_ENTAG: | |
f1e6e072 | 1729 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1730 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1731 | |
1732 | /* Some compilers try to be helpful by inventing "fake" | |
1733 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1734 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
e86ca25f | 1735 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1736 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1737 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1738 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
e86ca25f | 1739 | TYPE_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1740 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b | 1741 | |
e148f09d | 1742 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1743 | break; |
c906108c | 1744 | |
c5aa993b JM |
1745 | default: |
1746 | break; | |
c906108c SS |
1747 | } |
1748 | } | |
1749 | return sym; | |
1750 | } | |
1751 | \f | |
1752 | /* Decode a coff type specifier; return the type that is meant. */ | |
1753 | ||
1754 | static struct type * | |
aa1ee363 | 1755 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1756 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1757 | { |
52f0bd74 | 1758 | struct type *type = 0; |
c906108c SS |
1759 | unsigned int new_c_type; |
1760 | ||
1761 | if (c_type & ~N_BTMASK) | |
1762 | { | |
1763 | new_c_type = DECREF (c_type); | |
1764 | if (ISPTR (c_type)) | |
1765 | { | |
5e2b427d | 1766 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1767 | type = lookup_pointer_type (type); |
1768 | } | |
1769 | else if (ISFCN (c_type)) | |
1770 | { | |
5e2b427d | 1771 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1772 | type = lookup_function_type (type); |
1773 | } | |
1774 | else if (ISARY (c_type)) | |
1775 | { | |
1776 | int i, n; | |
aa1ee363 | 1777 | unsigned short *dim; |
c906108c SS |
1778 | struct type *base_type, *index_type, *range_type; |
1779 | ||
1780 | /* Define an array type. */ | |
aff410f1 | 1781 | /* auxent refers to array, not base type. */ |
c906108c SS |
1782 | if (aux->x_sym.x_tagndx.l == 0) |
1783 | cs->c_naux = 0; | |
1784 | ||
aff410f1 | 1785 | /* Shift the indices down. */ |
c906108c SS |
1786 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1787 | i = 1; | |
1788 | n = dim[0]; | |
1789 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1790 | *dim = *(dim + 1); | |
1791 | *dim = 0; | |
1792 | ||
5e2b427d | 1793 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1794 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 SA |
1795 | range_type |
1796 | = create_static_range_type ((struct type *) NULL, | |
1797 | index_type, 0, n - 1); | |
c906108c | 1798 | type = |
aff410f1 MS |
1799 | create_array_type ((struct type *) NULL, |
1800 | base_type, range_type); | |
c906108c SS |
1801 | } |
1802 | return type; | |
1803 | } | |
1804 | ||
aff410f1 MS |
1805 | /* Reference to existing type. This only occurs with the struct, |
1806 | union, and enum types. EPI a29k coff fakes us out by producing | |
1807 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1808 | unions, and enums, so we have to check the c_sclass field. SCO | |
1809 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1810 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1811 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1812 | { | |
1813 | if (cs->c_sclass != C_STRTAG | |
1814 | && cs->c_sclass != C_UNTAG | |
1815 | && cs->c_sclass != C_ENTAG | |
1816 | && aux->x_sym.x_tagndx.l >= 0) | |
1817 | { | |
1818 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1819 | return type; | |
1820 | } | |
1821 | else | |
1822 | { | |
b98664d3 | 1823 | complaint (_("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1824 | cs->c_name); |
aff410f1 | 1825 | /* And fall through to decode_base_type... */ |
c906108c SS |
1826 | } |
1827 | } | |
1828 | ||
5e2b427d | 1829 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1830 | } |
1831 | ||
1832 | /* Decode a coff type specifier for function definition; | |
1833 | return the type that the function returns. */ | |
1834 | ||
1835 | static struct type * | |
aff410f1 MS |
1836 | decode_function_type (struct coff_symbol *cs, |
1837 | unsigned int c_type, | |
1838 | union internal_auxent *aux, | |
1839 | struct objfile *objfile) | |
c906108c SS |
1840 | { |
1841 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1842 | cs->c_naux = 0; /* auxent refers to function, not base |
1843 | type. */ | |
c906108c | 1844 | |
5e2b427d | 1845 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1846 | } |
1847 | \f | |
aff410f1 | 1848 | /* Basic C types. */ |
c906108c SS |
1849 | |
1850 | static struct type * | |
aff410f1 MS |
1851 | decode_base_type (struct coff_symbol *cs, |
1852 | unsigned int c_type, | |
1853 | union internal_auxent *aux, | |
1854 | struct objfile *objfile) | |
c906108c | 1855 | { |
5e2b427d | 1856 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1857 | struct type *type; |
1858 | ||
1859 | switch (c_type) | |
1860 | { | |
c5aa993b | 1861 | case T_NULL: |
aff410f1 | 1862 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1863 | return objfile_type (objfile)->builtin_void; |
c906108c | 1864 | |
c906108c | 1865 | #ifdef T_VOID |
c5aa993b JM |
1866 | case T_VOID: |
1867 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1868 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1869 | #endif |
1870 | ||
c5aa993b | 1871 | case T_CHAR: |
46bf5051 | 1872 | return objfile_type (objfile)->builtin_char; |
c906108c | 1873 | |
c5aa993b | 1874 | case T_SHORT: |
46bf5051 | 1875 | return objfile_type (objfile)->builtin_short; |
c906108c | 1876 | |
c5aa993b | 1877 | case T_INT: |
46bf5051 | 1878 | return objfile_type (objfile)->builtin_int; |
c906108c | 1879 | |
c5aa993b JM |
1880 | case T_LONG: |
1881 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1882 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1883 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1884 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1885 | else |
46bf5051 | 1886 | return objfile_type (objfile)->builtin_long; |
c906108c | 1887 | |
c5aa993b | 1888 | case T_FLOAT: |
46bf5051 | 1889 | return objfile_type (objfile)->builtin_float; |
c906108c | 1890 | |
c5aa993b | 1891 | case T_DOUBLE: |
46bf5051 | 1892 | return objfile_type (objfile)->builtin_double; |
c906108c | 1893 | |
c5aa993b | 1894 | case T_LNGDBL: |
46bf5051 | 1895 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1896 | |
c5aa993b JM |
1897 | case T_STRUCT: |
1898 | if (cs->c_naux != 1) | |
1899 | { | |
aff410f1 | 1900 | /* Anonymous structure type. */ |
c5aa993b JM |
1901 | type = coff_alloc_type (cs->c_symnum); |
1902 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1903 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1904 | INIT_CPLUS_SPECIFIC (type); |
1905 | TYPE_LENGTH (type) = 0; | |
1906 | TYPE_FIELDS (type) = 0; | |
1907 | TYPE_NFIELDS (type) = 0; | |
1908 | } | |
1909 | else | |
1910 | { | |
1911 | type = coff_read_struct_type (cs->c_symnum, | |
1912 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1913 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1914 | objfile); | |
c5aa993b JM |
1915 | } |
1916 | return type; | |
c906108c | 1917 | |
c5aa993b JM |
1918 | case T_UNION: |
1919 | if (cs->c_naux != 1) | |
1920 | { | |
aff410f1 | 1921 | /* Anonymous union type. */ |
c5aa993b JM |
1922 | type = coff_alloc_type (cs->c_symnum); |
1923 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1924 | INIT_CPLUS_SPECIFIC (type); |
1925 | TYPE_LENGTH (type) = 0; | |
1926 | TYPE_FIELDS (type) = 0; | |
1927 | TYPE_NFIELDS (type) = 0; | |
1928 | } | |
1929 | else | |
1930 | { | |
1931 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1932 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1933 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1934 | objfile); | |
c5aa993b JM |
1935 | } |
1936 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1937 | return type; | |
c906108c | 1938 | |
c5aa993b JM |
1939 | case T_ENUM: |
1940 | if (cs->c_naux != 1) | |
1941 | { | |
aff410f1 | 1942 | /* Anonymous enum type. */ |
c5aa993b JM |
1943 | type = coff_alloc_type (cs->c_symnum); |
1944 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1945 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1946 | TYPE_LENGTH (type) = 0; |
1947 | TYPE_FIELDS (type) = 0; | |
1948 | TYPE_NFIELDS (type) = 0; | |
1949 | } | |
1950 | else | |
1951 | { | |
1952 | type = coff_read_enum_type (cs->c_symnum, | |
1953 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1954 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1955 | objfile); | |
c5aa993b JM |
1956 | } |
1957 | return type; | |
1958 | ||
1959 | case T_MOE: | |
aff410f1 | 1960 | /* Shouldn't show up here. */ |
c5aa993b | 1961 | break; |
c906108c | 1962 | |
c5aa993b | 1963 | case T_UCHAR: |
46bf5051 | 1964 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1965 | |
c5aa993b | 1966 | case T_USHORT: |
46bf5051 | 1967 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1968 | |
c5aa993b | 1969 | case T_UINT: |
46bf5051 | 1970 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1971 | |
c5aa993b JM |
1972 | case T_ULONG: |
1973 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1974 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1975 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1976 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1977 | else |
46bf5051 | 1978 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1979 | } |
b98664d3 | 1980 | complaint (_("Unexpected type for symbol %s"), cs->c_name); |
46bf5051 | 1981 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1982 | } |
1983 | \f | |
1984 | /* This page contains subroutines of read_type. */ | |
1985 | ||
1986 | /* Read the description of a structure (or union type) and return an | |
1987 | object describing the type. */ | |
1988 | ||
1989 | static struct type * | |
5e2b427d UW |
1990 | coff_read_struct_type (int index, int length, int lastsym, |
1991 | struct objfile *objfile) | |
c906108c SS |
1992 | { |
1993 | struct nextfield | |
1994 | { | |
1995 | struct nextfield *next; | |
1996 | struct field field; | |
1997 | }; | |
1998 | ||
52f0bd74 AC |
1999 | struct type *type; |
2000 | struct nextfield *list = 0; | |
fe978cb0 | 2001 | struct nextfield *newobj; |
c906108c | 2002 | int nfields = 0; |
52f0bd74 | 2003 | int n; |
c906108c SS |
2004 | char *name; |
2005 | struct coff_symbol member_sym; | |
52f0bd74 | 2006 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2007 | struct internal_syment sub_sym; |
2008 | union internal_auxent sub_aux; | |
2009 | int done = 0; | |
2010 | ||
2011 | type = coff_alloc_type (index); | |
2012 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2013 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2014 | TYPE_LENGTH (type) = length; |
2015 | ||
2016 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2017 | { | |
2018 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2019 | name = ms->c_name; | |
5e2b427d | 2020 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2021 | |
2022 | switch (ms->c_sclass) | |
2023 | { | |
c5aa993b JM |
2024 | case C_MOS: |
2025 | case C_MOU: | |
2026 | ||
2027 | /* Get space to record the next field's data. */ | |
8d749320 | 2028 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2029 | newobj->next = list; |
2030 | list = newobj; | |
c5aa993b JM |
2031 | |
2032 | /* Save the data. */ | |
224c3ddb SM |
2033 | list->field.name |
2034 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2035 | name, strlen (name)); |
aff410f1 MS |
2036 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2037 | &sub_aux, objfile); | |
d6a843b5 | 2038 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2039 | FIELD_BITSIZE (list->field) = 0; |
2040 | nfields++; | |
2041 | break; | |
c906108c | 2042 | |
c5aa993b JM |
2043 | case C_FIELD: |
2044 | ||
2045 | /* Get space to record the next field's data. */ | |
8d749320 | 2046 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2047 | newobj->next = list; |
2048 | list = newobj; | |
c5aa993b JM |
2049 | |
2050 | /* Save the data. */ | |
224c3ddb SM |
2051 | list->field.name |
2052 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2053 | name, strlen (name)); |
aff410f1 MS |
2054 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2055 | &sub_aux, objfile); | |
d6a843b5 | 2056 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2057 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2058 | nfields++; | |
2059 | break; | |
c906108c | 2060 | |
c5aa993b JM |
2061 | case C_EOS: |
2062 | done = 1; | |
2063 | break; | |
c906108c SS |
2064 | } |
2065 | } | |
2066 | /* Now create the vector of fields, and record how big it is. */ | |
2067 | ||
2068 | TYPE_NFIELDS (type) = nfields; | |
2069 | TYPE_FIELDS (type) = (struct field *) | |
2070 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2071 | ||
2072 | /* Copy the saved-up fields into the field vector. */ | |
2073 | ||
2074 | for (n = nfields; list; list = list->next) | |
2075 | TYPE_FIELD (type, --n) = list->field; | |
2076 | ||
2077 | return type; | |
2078 | } | |
2079 | \f | |
2080 | /* Read a definition of an enumeration type, | |
2081 | and create and return a suitable type object. | |
2082 | Also defines the symbols that represent the values of the type. */ | |
2083 | ||
c906108c | 2084 | static struct type * |
5e2b427d UW |
2085 | coff_read_enum_type (int index, int length, int lastsym, |
2086 | struct objfile *objfile) | |
c906108c | 2087 | { |
5e2b427d | 2088 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2089 | struct symbol *sym; |
2090 | struct type *type; | |
c906108c SS |
2091 | int nsyms = 0; |
2092 | int done = 0; | |
2093 | struct pending **symlist; | |
2094 | struct coff_symbol member_sym; | |
52f0bd74 | 2095 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2096 | struct internal_syment sub_sym; |
2097 | union internal_auxent sub_aux; | |
2098 | struct pending *osyms, *syms; | |
2099 | int o_nsyms; | |
52f0bd74 | 2100 | int n; |
c906108c SS |
2101 | char *name; |
2102 | int unsigned_enum = 1; | |
2103 | ||
2104 | type = coff_alloc_type (index); | |
2105 | if (within_function) | |
e148f09d | 2106 | symlist = get_local_symbols (); |
c906108c | 2107 | else |
e148f09d | 2108 | symlist = get_file_symbols (); |
c906108c SS |
2109 | osyms = *symlist; |
2110 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2111 | ||
2112 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2113 | { | |
2114 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2115 | name = ms->c_name; | |
5e2b427d | 2116 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2117 | |
2118 | switch (ms->c_sclass) | |
2119 | { | |
c5aa993b | 2120 | case C_MOE: |
e623cf5d | 2121 | sym = allocate_symbol (objfile); |
c5aa993b | 2122 | |
224c3ddb SM |
2123 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
2124 | strlen (name)); | |
2125 | SYMBOL_SET_LINKAGE_NAME (sym, name); | |
f1e6e072 | 2126 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2127 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2128 | SYMBOL_VALUE (sym) = ms->c_value; |
2129 | add_symbol_to_list (sym, symlist); | |
2130 | nsyms++; | |
2131 | break; | |
c906108c | 2132 | |
c5aa993b JM |
2133 | case C_EOS: |
2134 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2135 | up the count of how many symbols to read. So stop | |
2136 | on .eos. */ | |
2137 | done = 1; | |
2138 | break; | |
c906108c SS |
2139 | } |
2140 | } | |
2141 | ||
2142 | /* Now fill in the fields of the type-structure. */ | |
2143 | ||
2144 | if (length > 0) | |
2145 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2146 | else /* Assume ints. */ |
5e2b427d | 2147 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2148 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2149 | TYPE_NFIELDS (type) = nsyms; | |
2150 | TYPE_FIELDS (type) = (struct field *) | |
2151 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2152 | ||
2153 | /* Find the symbols for the values and put them into the type. | |
2154 | The symbols can be found in the symlist that we put them on | |
2155 | to cause them to be defined. osyms contains the old value | |
2156 | of that symlist; everything up to there was defined by us. */ | |
2157 | /* Note that we preserve the order of the enum constants, so | |
2158 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2159 | FOO, not LAST_THING. */ | |
2160 | ||
2161 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2162 | { | |
2163 | int j = 0; | |
2164 | ||
2165 | if (syms == osyms) | |
2166 | j = o_nsyms; | |
c5aa993b | 2167 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2168 | { |
2169 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2170 | |
c906108c | 2171 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2172 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2173 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2174 | if (SYMBOL_VALUE (xsym) < 0) |
2175 | unsigned_enum = 0; | |
2176 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2177 | } | |
2178 | if (syms == osyms) | |
2179 | break; | |
2180 | } | |
2181 | ||
2182 | if (unsigned_enum) | |
876cecd0 | 2183 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2184 | |
2185 | return type; | |
2186 | } | |
2187 | ||
aff410f1 | 2188 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2189 | |
00b5771c | 2190 | static const struct sym_fns coff_sym_fns = |
c906108c | 2191 | { |
aff410f1 MS |
2192 | coff_new_init, /* sym_new_init: init anything gbl to |
2193 | entire symtab */ | |
2194 | coff_symfile_init, /* sym_init: read initial info, setup | |
2195 | for sym_read() */ | |
2196 | coff_symfile_read, /* sym_read: read a symbol file into | |
2197 | symtab */ | |
b11896a5 | 2198 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2199 | coff_symfile_finish, /* sym_finish: finished with file, |
2200 | cleanup */ | |
2201 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2202 | internal form */ | |
2203 | default_symfile_segments, /* sym_segments: Get segment | |
2204 | information from a file */ | |
c295b2e5 | 2205 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2206 | |
2207 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2208 | section. */ | |
55aa24fb | 2209 | NULL, /* sym_probe_fns */ |
00b5771c | 2210 | &psym_functions |
c906108c SS |
2211 | }; |
2212 | ||
b8b98ad1 TT |
2213 | /* Free the per-objfile COFF data. */ |
2214 | ||
2215 | static void | |
2216 | coff_free_info (struct objfile *objfile, void *arg) | |
2217 | { | |
2218 | xfree (arg); | |
2219 | } | |
2220 | ||
c906108c | 2221 | void |
fba45db2 | 2222 | _initialize_coffread (void) |
c906108c | 2223 | { |
c256e171 | 2224 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 TT |
2225 | |
2226 | coff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
2227 | coff_free_info); | |
f1e6e072 TT |
2228 | |
2229 | coff_register_index | |
2230 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2231 | } |