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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
4a94e368 | 2 | Copyright (C) 1987-2022 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" | |
4de283e4 TT |
21 | #include "symtab.h" |
22 | #include "gdbtypes.h" | |
23 | #include "demangle.h" | |
24 | #include "breakpoint.h" | |
c906108c | 25 | |
4de283e4 | 26 | #include "bfd.h" |
bf31fd38 | 27 | #include "gdbsupport/gdb_obstack.h" |
c906108c SS |
28 | #include <ctype.h> |
29 | ||
4de283e4 TT |
30 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
31 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
32 | #include "objfiles.h" | |
0baae8db | 33 | #include "buildsym-legacy.h" |
d55e5aa6 | 34 | #include "stabsread.h" |
4de283e4 | 35 | #include "complaints.h" |
d55e5aa6 | 36 | #include "target.h" |
4de283e4 TT |
37 | #include "block.h" |
38 | #include "dictionary.h" | |
70182375 | 39 | #include "dwarf2/public.h" |
4de283e4 TT |
40 | |
41 | #include "coff-pe-read.h" | |
42 | ||
43 | #include "psymtab.h" | |
44 | #include "build-id.h" | |
ccefe4c4 | 45 | |
91a81f69 TT |
46 | /* The objfile we are currently reading. */ |
47 | ||
dd707e8e | 48 | static struct objfile *coffread_objfile; |
91a81f69 | 49 | |
c5aa993b JM |
50 | struct coff_symfile_info |
51 | { | |
24699405 TT |
52 | file_ptr min_lineno_offset = 0; /* Where in file lowest line#s are. */ |
53 | file_ptr max_lineno_offset = 0; /* 1+last byte of line#s in file. */ | |
c906108c | 54 | |
24699405 TT |
55 | CORE_ADDR textaddr = 0; /* Addr of .text section. */ |
56 | unsigned int textsize = 0; /* Size of .text section. */ | |
e2a03548 | 57 | std::vector<asection *> *stabsects; /* .stab sections. */ |
24699405 TT |
58 | asection *stabstrsect = nullptr; /* Section pointer for .stab section. */ |
59 | char *stabstrdata = nullptr; | |
c5aa993b | 60 | }; |
c906108c | 61 | |
24699405 TT |
62 | /* Key for COFF-associated data. */ |
63 | ||
64 | static const struct objfile_key<coff_symfile_info> coff_objfile_data_key; | |
65 | ||
c906108c SS |
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 | 158 | static char *linetab = NULL; |
a9e48095 JN |
159 | static file_ptr linetab_offset; |
160 | static file_ptr linetab_size; | |
e2a03548 TT |
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 | |
a9e48095 | 192 | static void enter_linenos (file_ptr, int, int, struct objfile *); |
c906108c | 193 | |
a9e48095 | 194 | static int init_lineno (bfd *, file_ptr, file_ptr, 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 | |
a9e48095 | 200 | static int init_stringtab (bfd *, file_ptr, 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 | 206 | static void coff_symtab_read (minimal_symbol_reader &, |
a9e48095 JN |
207 | file_ptr, unsigned int, struct objfile *); |
208 | ||
c906108c SS |
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; | |
fd361982 | 226 | name = bfd_section_name (sectp); |
7ecb6532 | 227 | if (strcmp (name, ".text") == 0) |
c906108c | 228 | { |
fd361982 AM |
229 | csi->textaddr = bfd_section_vma (sectp); |
230 | csi->textsize += bfd_section_size (sectp); | |
c906108c | 231 | } |
61012eef | 232 | else if (startswith (name, ".text")) |
c906108c | 233 | { |
fd361982 | 234 | csi->textsize += bfd_section_size (sectp); |
c906108c | 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 | |
dda83cd7 | 245 | --split-by-reloc. */ |
c906108c | 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) | |
fd361982 | 311 | addr = bfd_section_vma (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 | |
59dfe8ad | 368 | coff_start_compunit_symtab (struct objfile *objfile, const char *name) |
c906108c | 369 | { |
5985ac61 | 370 | within_function = 0; |
59dfe8ad SM |
371 | start_compunit_symtab (objfile, |
372 | name, | |
c5aa993b | 373 | /* We never know the directory name for COFF. */ |
59dfe8ad | 374 | NULL, |
2c99ee5c | 375 | /* The start address is irrelevant, since we call |
59dfe8ad SM |
376 | set_last_source_start_addr in coff_end_compunit_symtab. */ |
377 | 0, | |
5ffa0793 | 378 | /* Let buildsym.c deduce the language for this symtab. */ |
59dfe8ad | 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 | |
59dfe8ad | 403 | coff_end_compunit_symtab (struct objfile *objfile) |
c906108c | 404 | { |
2c99ee5c | 405 | set_last_source_start_addr (current_source_start_addr); |
c906108c | 406 | |
59dfe8ad | 407 | end_compunit_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 | { | |
85102364 | 421 | /* The following is a bit of a heuristic using the characteristics |
af312be7 JB |
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 | |
30baf67b | 460 | reverse lookup; this manifests itself in backtraces, or any |
af312be7 JB |
461 | other commands that prints symbolic addresses. Just pretend |
462 | these symbols do not exist. */ | |
463 | return NULL; | |
464 | } | |
465 | ||
31edb802 | 466 | return reader.record_full (cs->c_name, true, 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 | { |
aff410f1 | 486 | /* Allocate struct to keep track of the symfile. */ |
24699405 | 487 | coff_objfile_data_key.emplace (objfile); |
c906108c SS |
488 | |
489 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
490 | find this causes a significant slowdown in gdb then we could | |
491 | set it in the debug symbol readers only when necessary. */ | |
492 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
493 | } |
494 | ||
aff410f1 MS |
495 | /* This function is called for every section; it finds the outer |
496 | limits of the line table (minimum and maximum file offset) so that | |
497 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 498 | |
c906108c | 499 | static void |
7be0c536 | 500 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
501 | { |
502 | struct coff_symfile_info *info; | |
503 | int size, count; | |
504 | file_ptr offset, maxoff; | |
505 | ||
aff410f1 | 506 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 507 | count = asect->lineno_count; |
aff410f1 | 508 | /* End of warning. */ |
c906108c SS |
509 | |
510 | if (count == 0) | |
511 | return; | |
512 | size = count * local_linesz; | |
513 | ||
c5aa993b | 514 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 515 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 516 | offset = asect->line_filepos; |
aff410f1 | 517 | /* End of warning. */ |
c906108c SS |
518 | |
519 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
520 | info->min_lineno_offset = offset; | |
521 | ||
522 | maxoff = offset + size; | |
523 | if (maxoff > info->max_lineno_offset) | |
524 | info->max_lineno_offset = maxoff; | |
525 | } | |
526 | ||
527 | ||
528 | /* The BFD for this file -- only good while we're actively reading | |
529 | symbols into a psymtab or a symtab. */ | |
530 | ||
531 | static bfd *symfile_bfd; | |
532 | ||
533 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
534 | ||
c906108c | 535 | static void |
b15cc25c | 536 | coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
537 | { |
538 | struct coff_symfile_info *info; | |
c906108c SS |
539 | bfd *abfd = objfile->obfd; |
540 | coff_data_type *cdata = coff_data (abfd); | |
b16c44de | 541 | const char *filename = bfd_get_filename (abfd); |
52f0bd74 | 542 | int val; |
745b8ca0 | 543 | unsigned int num_symbols; |
a9e48095 JN |
544 | file_ptr symtab_offset; |
545 | file_ptr stringtab_offset; | |
546 | unsigned int stabstrsize; | |
c2d11a7d | 547 | |
24699405 | 548 | info = coff_objfile_data_key.get (objfile); |
aff410f1 | 549 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c | 550 | |
e2a03548 TT |
551 | std::vector<asection *> stabsects; |
552 | scoped_restore restore_stabsects | |
553 | = make_scoped_restore (&info->stabsects, &stabsects); | |
554 | ||
c906108c | 555 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c5aa993b JM |
556 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
557 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
558 | stringtab_offset = symtab_offset + /* String table file offset */ | |
559 | num_symbols * cdata->local_symesz; | |
c906108c SS |
560 | |
561 | /* Set a few file-statics that give us specific information about | |
562 | the particular COFF file format we're reading. */ | |
c906108c SS |
563 | local_n_btmask = cdata->local_n_btmask; |
564 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 565 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 566 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
567 | local_linesz = cdata->local_linesz; |
568 | local_symesz = cdata->local_symesz; | |
569 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
570 | |
571 | /* Allocate space for raw symbol and aux entries, based on their | |
572 | space requirements as reported by BFD. */ | |
e2a03548 TT |
573 | gdb::def_vector<char> temp_storage (cdata->local_symesz |
574 | + cdata->local_auxesz); | |
575 | temp_sym = temp_storage.data (); | |
c906108c | 576 | temp_aux = temp_sym + cdata->local_symesz; |
c906108c SS |
577 | |
578 | /* We need to know whether this is a PE file, because in PE files, | |
579 | unlike standard COFF files, symbol values are stored as offsets | |
580 | from the section address, rather than as absolute addresses. | |
581 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
582 | this problem. */ | |
0d06e24b | 583 | pe_file = |
61012eef GB |
584 | startswith (bfd_get_target (objfile->obfd), "pe") |
585 | || startswith (bfd_get_target (objfile->obfd), "epoc-pe"); | |
c906108c | 586 | |
aff410f1 | 587 | /* End of warning. */ |
c906108c | 588 | |
c906108c SS |
589 | info->min_lineno_offset = 0; |
590 | info->max_lineno_offset = 0; | |
c906108c | 591 | |
ebeb39fe JB |
592 | /* Only read line number information if we have symbols. |
593 | ||
594 | On Windows NT, some of the system's DLL's have sections with | |
595 | PointerToLinenumbers fields that are non-zero, but point at | |
596 | random places within the image file. (In the case I found, | |
597 | KERNEL32.DLL's .text section has a line number info pointer that | |
598 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
599 | ||
600 | However, these DLL's also have no symbols. The line number | |
601 | tables are meaningless without symbols. And in fact, GDB never | |
602 | uses the line number information unless there are symbols. So we | |
603 | can avoid spurious error messages (and maybe run a little | |
604 | faster!) by not even reading the line number table unless we have | |
605 | symbols. */ | |
e2a03548 TT |
606 | scoped_restore restore_linetab = make_scoped_restore (&linetab); |
607 | gdb::unique_xmalloc_ptr<char> linetab_storage; | |
ebeb39fe JB |
608 | if (num_symbols > 0) |
609 | { | |
610 | /* Read the line number table, all at once. */ | |
611 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
612 | ||
ebeb39fe | 613 | val = init_lineno (abfd, info->min_lineno_offset, |
dda83cd7 | 614 | info->max_lineno_offset - info->min_lineno_offset, |
e2a03548 | 615 | &linetab_storage); |
ebeb39fe | 616 | if (val < 0) |
dda83cd7 | 617 | error (_("\"%s\": error reading line numbers."), filename); |
ebeb39fe | 618 | } |
c906108c SS |
619 | |
620 | /* Now read the string table, all at once. */ | |
621 | ||
e2a03548 TT |
622 | scoped_restore restore_stringtab = make_scoped_restore (&stringtab); |
623 | gdb::unique_xmalloc_ptr<char> stringtab_storage; | |
624 | val = init_stringtab (abfd, stringtab_offset, &stringtab_storage); | |
c906108c | 625 | if (val < 0) |
b926417a | 626 | error (_("\"%s\": can't get string table"), filename); |
c906108c | 627 | |
d25e8719 | 628 | minimal_symbol_reader reader (objfile); |
c906108c SS |
629 | |
630 | /* Now that the executable file is positioned at symbol table, | |
631 | process it and define symbols accordingly. */ | |
632 | ||
8dddcb8f | 633 | coff_symtab_read (reader, (long) symtab_offset, num_symbols, objfile); |
c906108c | 634 | |
aff410f1 MS |
635 | /* Install any minimal symbols that have been collected as the |
636 | current minimal symbols for this objfile. */ | |
c906108c | 637 | |
d25e8719 | 638 | reader.install (); |
c906108c | 639 | |
303c5ee1 YQ |
640 | if (pe_file) |
641 | { | |
7932255d | 642 | for (minimal_symbol *msym : objfile->msymbols ()) |
303c5ee1 | 643 | { |
c9d95fa3 | 644 | const char *name = msym->linkage_name (); |
303c5ee1 YQ |
645 | |
646 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
647 | or "_imp_", get rid of the prefix, and search the minimal | |
648 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
649 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
60f62e2b | 650 | if (msym->type () == mst_data) |
303c5ee1 | 651 | { |
20d35291 PA |
652 | const char *name1 = NULL; |
653 | ||
654 | if (startswith (name, "_imp_")) | |
655 | name1 = name + 5; | |
656 | else if (startswith (name, "__imp_")) | |
657 | name1 = name + 6; | |
658 | if (name1 != NULL) | |
659 | { | |
660 | int lead = bfd_get_symbol_leading_char (objfile->obfd); | |
661 | struct bound_minimal_symbol found; | |
662 | ||
dda83cd7 | 663 | if (lead != '\0' && *name1 == lead) |
20d35291 PA |
664 | name1 += 1; |
665 | ||
666 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
667 | ||
668 | /* If found, there are symbols named "_imp_foo" and "foo" | |
669 | respectively in OBJFILE. Set the type of symbol "foo" | |
670 | as 'mst_solib_trampoline'. */ | |
671 | if (found.minsym != NULL | |
60f62e2b SM |
672 | && found.minsym->type () == mst_text) |
673 | found.minsym->set_type (mst_solib_trampoline); | |
20d35291 | 674 | } |
303c5ee1 YQ |
675 | } |
676 | } | |
677 | } | |
678 | ||
97cbe998 SDJ |
679 | if (!(objfile->flags & OBJF_READNEVER)) |
680 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); | |
c906108c | 681 | |
e2a03548 | 682 | if (!info->stabsects->empty()) |
c906108c | 683 | { |
c5aa993b | 684 | if (!info->stabstrsect) |
b83266a0 | 685 | { |
3e43a32a MS |
686 | error (_("The debugging information in `%s' is corrupted.\nThe " |
687 | "file has a `.stabs' section, but no `.stabstr' section."), | |
b926417a | 688 | filename); |
b83266a0 SS |
689 | } |
690 | ||
c906108c | 691 | /* FIXME: dubious. Why can't we use something normal like |
dda83cd7 | 692 | bfd_get_section_contents? */ |
c906108c SS |
693 | bfd_seek (abfd, abfd->where, 0); |
694 | ||
fd361982 | 695 | stabstrsize = bfd_section_size (info->stabstrsect); |
c906108c SS |
696 | |
697 | coffstab_build_psymtabs (objfile, | |
c906108c | 698 | info->textaddr, info->textsize, |
e2a03548 | 699 | *info->stabsects, |
c906108c SS |
700 | info->stabstrsect->filepos, stabstrsize); |
701 | } | |
251d32d9 | 702 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
703 | { |
704 | /* DWARF2 sections. */ | |
31de881f | 705 | dwarf2_initialize_objfile (objfile); |
42a076f0 | 706 | } |
c906108c | 707 | |
9cce227f | 708 | /* Try to add separate debug file if no symbols table found. */ |
a8ad4f3c | 709 | if (!objfile->has_partial_symbols ()) |
9cce227f | 710 | { |
a8dbfd58 | 711 | std::string debugfile = find_separate_debug_file_by_buildid (objfile); |
9cce227f | 712 | |
a8dbfd58 | 713 | if (debugfile.empty ()) |
c74f7d1c | 714 | debugfile = find_separate_debug_file_by_debuglink (objfile); |
9cce227f | 715 | |
a8dbfd58 | 716 | if (!debugfile.empty ()) |
9cce227f | 717 | { |
b926417a | 718 | gdb_bfd_ref_ptr debug_bfd (symfile_bfd_open (debugfile.c_str ())); |
c5504eaf | 719 | |
b926417a | 720 | symbol_file_add_separate (debug_bfd.get (), debugfile.c_str (), |
a8dbfd58 | 721 | symfile_flags, objfile); |
9cce227f TG |
722 | } |
723 | } | |
c906108c SS |
724 | } |
725 | ||
726 | static void | |
fba45db2 | 727 | coff_new_init (struct objfile *ignore) |
c906108c SS |
728 | { |
729 | } | |
730 | ||
aff410f1 MS |
731 | /* Perform any local cleanups required when we are done with a |
732 | particular objfile. I.E, we are in the process of discarding all | |
733 | symbol information for an objfile, freeing up all memory held for | |
734 | it, and unlinking the objfile struct from the global list of known | |
735 | objfiles. */ | |
c906108c SS |
736 | |
737 | static void | |
fba45db2 | 738 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 739 | { |
aff410f1 | 740 | /* Let stabs reader clean up. */ |
7be570e7 | 741 | stabsread_clear_cache (); |
c906108c | 742 | } |
c906108c | 743 | \f |
c5aa993b | 744 | |
c906108c SS |
745 | /* Given pointers to a symbol table in coff style exec file, |
746 | analyze them and create struct symtab's describing the symbols. | |
747 | NSYMS is the number of symbols in the symbol table. | |
748 | We read them one at a time using read_one_sym (). */ | |
749 | ||
750 | static void | |
8dddcb8f | 751 | coff_symtab_read (minimal_symbol_reader &reader, |
a9e48095 | 752 | file_ptr symtab_offset, unsigned int nsyms, |
fba45db2 | 753 | struct objfile *objfile) |
c906108c | 754 | { |
08feed99 | 755 | struct gdbarch *gdbarch = objfile->arch (); |
875e5398 | 756 | struct context_stack *newobj = nullptr; |
c906108c | 757 | struct coff_symbol coff_symbol; |
52f0bd74 | 758 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
759 | static struct internal_syment main_sym; |
760 | static union internal_auxent main_aux; | |
761 | struct coff_symbol fcn_cs_saved; | |
762 | static struct internal_syment fcn_sym_saved; | |
763 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
764 | /* A .file is open. */ |
765 | int in_source_file = 0; | |
766 | int next_file_symnum = -1; | |
767 | /* Name of the current file. */ | |
9f37bbcc | 768 | const char *filestring = ""; |
c906108c SS |
769 | int depth = 0; |
770 | int fcn_first_line = 0; | |
b9179dbc | 771 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
772 | int fcn_last_line = 0; |
773 | int fcn_start_addr = 0; | |
774 | long fcn_line_ptr = 0; | |
775 | int val; | |
776 | CORE_ADDR tmpaddr; | |
05cfdb42 | 777 | struct minimal_symbol *msym; |
c906108c | 778 | |
4735f0ed TT |
779 | scoped_free_pendings free_pending; |
780 | ||
c906108c | 781 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
aff410f1 MS |
782 | it's hard to know I've really worked around it. The fix should |
783 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
784 | fread (in read_one_sym), will (in my example) actually get data |
785 | from file offset 268, when the fseek was to 264 (and ftell shows | |
786 | 264). This causes all hell to break loose. I was unable to | |
787 | reproduce this on a short test program which operated on the same | |
788 | file, performing (I think) the same sequence of operations. | |
789 | ||
790 | It stopped happening when I put in this (former) rewind(). | |
791 | ||
792 | FIXME: Find out if this has been reported to Sun, whether it has | |
793 | been fixed in a later release, etc. */ | |
794 | ||
795 | bfd_seek (objfile->obfd, 0, 0); | |
796 | ||
aff410f1 | 797 | /* Position to read the symbol table. */ |
a9e48095 | 798 | val = bfd_seek (objfile->obfd, symtab_offset, 0); |
c906108c | 799 | if (val < 0) |
4262abfb | 800 | perror_with_name (objfile_name (objfile)); |
c906108c | 801 | |
dd707e8e | 802 | coffread_objfile = objfile; |
c906108c SS |
803 | nlist_bfd_global = objfile->obfd; |
804 | nlist_nsyms_global = nsyms; | |
46212e0b | 805 | set_last_source_file (NULL); |
c906108c SS |
806 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
807 | ||
aff410f1 | 808 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 809 | xfree (type_vector); |
fc474241 | 810 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 811 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 812 | |
59dfe8ad | 813 | coff_start_compunit_symtab (objfile, ""); |
c906108c SS |
814 | |
815 | symnum = 0; | |
816 | while (symnum < nsyms) | |
817 | { | |
818 | QUIT; /* Make this command interruptable. */ | |
819 | ||
820 | read_one_sym (cs, &main_sym, &main_aux); | |
821 | ||
822 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
823 | { | |
46212e0b | 824 | if (get_last_source_file ()) |
59dfe8ad | 825 | coff_end_compunit_symtab (objfile); |
c906108c | 826 | |
59dfe8ad SM |
827 | coff_start_compunit_symtab (objfile, "_globals_"); |
828 | /* coff_start_compunit_symtab will set the language of this symtab to | |
969107c5 EZ |
829 | language_unknown, since such a ``file name'' is not |
830 | recognized. Override that with the minimal language to | |
831 | allow printing values in this symtab. */ | |
3c65e5b3 | 832 | get_current_subfile ()->language = language_minimal; |
c906108c | 833 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
834 | /* Done with all files, everything from here on out is |
835 | globals. */ | |
c906108c SS |
836 | } |
837 | ||
aff410f1 MS |
838 | /* Special case for file with type declarations only, no |
839 | text. */ | |
46212e0b | 840 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
841 | && cs->c_secnum == N_DEBUG) |
842 | complete_symtab (filestring, 0, 0); | |
843 | ||
844 | /* Typedefs should not be treated as symbol definitions. */ | |
845 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
846 | { | |
aff410f1 MS |
847 | /* Record all functions -- external and static -- in |
848 | minsyms. */ | |
fbcebcb1 | 849 | int section = cs_to_section (cs, objfile); |
c5504eaf | 850 | |
2273f0ac | 851 | tmpaddr = cs->c_value; |
156f2366 EZ |
852 | /* Don't record unresolved symbols. */ |
853 | if (!(cs->c_secnum <= 0 && cs->c_value == 0)) | |
854 | record_minimal_symbol (reader, cs, tmpaddr, mst_text, | |
855 | section, objfile); | |
c906108c SS |
856 | |
857 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
858 | fcn_start_addr = tmpaddr; | |
859 | fcn_cs_saved = *cs; | |
860 | fcn_sym_saved = main_sym; | |
861 | fcn_aux_saved = main_aux; | |
862 | continue; | |
863 | } | |
864 | ||
865 | switch (cs->c_sclass) | |
866 | { | |
c5aa993b JM |
867 | case C_EFCN: |
868 | case C_EXTDEF: | |
869 | case C_ULABEL: | |
870 | case C_USTATIC: | |
871 | case C_LINE: | |
872 | case C_ALIAS: | |
873 | case C_HIDDEN: | |
b98664d3 | 874 | complaint (_("Bad n_sclass for symbol %s"), |
23136709 | 875 | cs->c_name); |
c5aa993b | 876 | break; |
c906108c | 877 | |
c5aa993b | 878 | case C_FILE: |
aff410f1 MS |
879 | /* c_value field contains symnum of next .file entry in |
880 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
881 | next_file_symnum = cs->c_value; |
882 | if (cs->c_naux > 0) | |
883 | filestring = coff_getfilename (&main_aux); | |
884 | else | |
885 | filestring = ""; | |
886 | ||
887 | /* Complete symbol table for last object file | |
888 | containing debugging information. */ | |
46212e0b | 889 | if (get_last_source_file ()) |
c5aa993b | 890 | { |
59dfe8ad SM |
891 | coff_end_compunit_symtab (objfile); |
892 | coff_start_compunit_symtab (objfile, filestring); | |
c5aa993b JM |
893 | } |
894 | in_source_file = 1; | |
895 | break; | |
c906108c | 896 | |
aff410f1 MS |
897 | /* C_LABEL is used for labels and static functions. |
898 | Including it here allows gdb to see static functions when | |
899 | no debug info is available. */ | |
c5aa993b | 900 | case C_LABEL: |
aff410f1 MS |
901 | /* However, labels within a function can make weird |
902 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
903 | if (within_function) |
904 | break; | |
565e0eda | 905 | /* Fall through. */ |
c5aa993b JM |
906 | case C_STAT: |
907 | case C_THUMBLABEL: | |
908 | case C_THUMBSTAT: | |
909 | case C_THUMBSTATFUNC: | |
910 | if (cs->c_name[0] == '.') | |
911 | { | |
7ecb6532 | 912 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 913 | { |
aff410f1 MS |
914 | /* FIXME: don't wire in ".text" as section name or |
915 | symbol name! */ | |
916 | /* Check for in_source_file deals with case of a | |
917 | file with debugging symbols followed by a later | |
918 | file with no symbols. */ | |
c906108c SS |
919 | if (in_source_file) |
920 | complete_symtab (filestring, | |
6a053cb1 | 921 | (cs->c_value |
b3b3bada | 922 | + objfile->text_section_offset ()), |
c906108c SS |
923 | main_aux.x_scn.x_scnlen); |
924 | in_source_file = 0; | |
925 | } | |
aff410f1 | 926 | /* Flush rest of '.' symbols. */ |
c906108c | 927 | break; |
c5aa993b JM |
928 | } |
929 | else if (!SDB_TYPE (cs->c_type) | |
930 | && cs->c_name[0] == 'L' | |
61012eef GB |
931 | && (startswith (cs->c_name, "LI%") |
932 | || startswith (cs->c_name, "LF%") | |
933 | || startswith (cs->c_name, "LC%") | |
934 | || startswith (cs->c_name, "LP%") | |
935 | || startswith (cs->c_name, "LPB%") | |
936 | || startswith (cs->c_name, "LBB%") | |
937 | || startswith (cs->c_name, "LBE%") | |
938 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
939 | /* At least on a 3b1, gcc generates swbeg and string labels |
940 | that look like this. Ignore them. */ | |
941 | break; | |
86a73007 TT |
942 | /* For static symbols that don't start with '.'... */ |
943 | /* Fall through. */ | |
c5aa993b JM |
944 | case C_THUMBEXT: |
945 | case C_THUMBEXTFUNC: | |
946 | case C_EXT: | |
947 | { | |
948 | /* Record it in the minimal symbols regardless of | |
949 | SDB_TYPE. This parallels what we do for other debug | |
950 | formats, and probably is needed to make | |
951 | print_address_symbolic work right without the (now | |
952 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 953 | |
c5aa993b JM |
954 | enum minimal_symbol_type ms_type; |
955 | int sec; | |
2273f0ac | 956 | CORE_ADDR offset = 0; |
c906108c | 957 | |
c5aa993b JM |
958 | if (cs->c_secnum == N_UNDEF) |
959 | { | |
d4862372 JB |
960 | /* This is a common symbol. We used to rely on |
961 | the target to tell us whether it knows where | |
962 | the symbol has been relocated to, but none of | |
963 | the target implementations actually provided | |
964 | that operation. So we just ignore the symbol, | |
965 | the same way we would do if we had a target-side | |
966 | symbol lookup which returned no match. */ | |
967 | break; | |
c5aa993b | 968 | } |
24b21115 SM |
969 | else if (cs->c_secnum == N_ABS) |
970 | { | |
971 | /* Use the correct minimal symbol type (and don't | |
972 | relocate) for absolute values. */ | |
973 | ms_type = mst_abs; | |
974 | sec = cs_to_section (cs, objfile); | |
975 | tmpaddr = cs->c_value; | |
976 | } | |
c5aa993b JM |
977 | else |
978 | { | |
05cfdb42 | 979 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 980 | |
c5aa993b JM |
981 | sec = cs_to_section (cs, objfile); |
982 | tmpaddr = cs->c_value; | |
24b21115 SM |
983 | /* Statics in a PE file also get relocated. */ |
984 | if (cs->c_sclass == C_EXT | |
985 | || cs->c_sclass == C_THUMBEXTFUNC | |
986 | || cs->c_sclass == C_THUMBEXT | |
987 | || (pe_file && (cs->c_sclass == C_STAT))) | |
6a053cb1 | 988 | offset = objfile->section_offsets[sec]; |
c906108c | 989 | |
05cfdb42 | 990 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 991 | { |
c5aa993b JM |
992 | ms_type = |
993 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
994 | || cs->c_sclass == C_THUMBEXT ? | |
995 | mst_text : mst_file_text; | |
85ddcc70 | 996 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 997 | } |
05cfdb42 DJ |
998 | else if (bfd_section->flags & SEC_ALLOC |
999 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1000 | { |
c5aa993b | 1001 | ms_type = |
aff410f1 MS |
1002 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1003 | ? mst_data : mst_file_data; | |
34e924c0 | 1004 | } |
05cfdb42 | 1005 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1006 | { |
c5aa993b | 1007 | ms_type = |
aff410f1 MS |
1008 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1009 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1010 | } |
1011 | else | |
1012 | ms_type = mst_unknown; | |
c5aa993b | 1013 | } |
c906108c | 1014 | |
8dddcb8f | 1015 | msym = record_minimal_symbol (reader, cs, tmpaddr, ms_type, |
aff410f1 | 1016 | sec, objfile); |
05cfdb42 | 1017 | if (msym) |
aff410f1 MS |
1018 | gdbarch_coff_make_msymbol_special (gdbarch, |
1019 | cs->c_sclass, msym); | |
fbcebcb1 | 1020 | |
c5aa993b JM |
1021 | if (SDB_TYPE (cs->c_type)) |
1022 | { | |
1023 | struct symbol *sym; | |
c5504eaf | 1024 | |
c5aa993b | 1025 | sym = process_coff_symbol |
96baa820 | 1026 | (cs, &main_aux, objfile); |
4aeddc50 | 1027 | sym->set_value_longest (tmpaddr + offset); |
a52d653e | 1028 | sym->set_section_index (sec); |
c5aa993b JM |
1029 | } |
1030 | } | |
1031 | break; | |
1032 | ||
1033 | case C_FCN: | |
7ecb6532 | 1034 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1035 | { |
1036 | within_function = 1; | |
1037 | ||
aff410f1 MS |
1038 | /* Value contains address of first non-init type |
1039 | code. */ | |
c5aa993b | 1040 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1041 | contains line number of '{' }. */ |
c5aa993b | 1042 | if (cs->c_naux != 1) |
b98664d3 | 1043 | complaint (_("`.bf' symbol %d has no aux entry"), |
aff410f1 | 1044 | cs->c_symnum); |
c5aa993b JM |
1045 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1046 | fcn_first_line_addr = cs->c_value; | |
1047 | ||
1048 | /* Might want to check that locals are 0 and | |
dda83cd7 | 1049 | context_stack_depth is zero, and complain if not. */ |
c5aa993b JM |
1050 | |
1051 | depth = 0; | |
fe978cb0 | 1052 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1053 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1054 | newobj->name = |
aff410f1 MS |
1055 | process_coff_symbol (&fcn_cs_saved, |
1056 | &fcn_aux_saved, objfile); | |
c5aa993b | 1057 | } |
7ecb6532 | 1058 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1059 | { |
b9179dbc | 1060 | if (!within_function) |
8a3fe4f8 | 1061 | error (_("Bad coff function information.")); |
aff410f1 | 1062 | /* The value of .ef is the address of epilogue code; |
dda83cd7 | 1063 | not useful for gdb. */ |
c5aa993b | 1064 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1065 | contains number of lines to '}' */ |
c5aa993b | 1066 | |
edb0470b | 1067 | if (outermost_context_p ()) |
aff410f1 | 1068 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1069 | complaint (_("`.ef' symbol without matching `.bf' " |
3e43a32a | 1070 | "symbol ignored starting at symnum %d"), |
23136709 | 1071 | cs->c_symnum); |
c5aa993b JM |
1072 | within_function = 0; |
1073 | break; | |
c906108c | 1074 | } |
c5aa993b | 1075 | |
a60f3166 | 1076 | struct context_stack cstk = pop_context (); |
c5aa993b | 1077 | /* Stack must be empty now. */ |
edb0470b | 1078 | if (!outermost_context_p () || newobj == NULL) |
c906108c | 1079 | { |
b98664d3 | 1080 | complaint (_("Unmatched .ef symbol(s) ignored " |
3e43a32a | 1081 | "starting at symnum %d"), |
23136709 | 1082 | cs->c_symnum); |
c5aa993b JM |
1083 | within_function = 0; |
1084 | break; | |
c906108c | 1085 | } |
c5aa993b JM |
1086 | if (cs->c_naux != 1) |
1087 | { | |
b98664d3 | 1088 | complaint (_("`.ef' symbol %d has no aux entry"), |
aff410f1 | 1089 | cs->c_symnum); |
c5aa993b JM |
1090 | fcn_last_line = 0x7FFFFFFF; |
1091 | } | |
1092 | else | |
1093 | { | |
1094 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1095 | } | |
1096 | /* fcn_first_line is the line number of the opening '{'. | |
dda83cd7 SM |
1097 | Do not record it - because it would affect gdb's idea |
1098 | of the line number of the first statement of the | |
1099 | function - except for one-line functions, for which | |
1100 | it is also the line number of all the statements and | |
1101 | of the closing '}', and for which we do not have any | |
1102 | other statement-line-number. */ | |
c5aa993b | 1103 | if (fcn_last_line == 1) |
3c65e5b3 | 1104 | record_line (get_current_subfile (), fcn_first_line, |
fbf65064 UW |
1105 | gdbarch_addr_bits_remove (gdbarch, |
1106 | fcn_first_line_addr)); | |
c5aa993b | 1107 | else |
aff410f1 MS |
1108 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1109 | fcn_last_line, objfile); | |
c906108c | 1110 | |
c233e9c6 | 1111 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1112 | NULL, cstk.start_addr, |
c5aa993b JM |
1113 | fcn_cs_saved.c_value |
1114 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b3b3bada | 1115 | + objfile->text_section_offset ()); |
c5aa993b JM |
1116 | within_function = 0; |
1117 | } | |
1118 | break; | |
c906108c | 1119 | |
c5aa993b | 1120 | case C_BLOCK: |
7ecb6532 | 1121 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1122 | { |
1123 | tmpaddr = cs->c_value; | |
b3b3bada | 1124 | tmpaddr += objfile->text_section_offset (); |
c5aa993b JM |
1125 | push_context (++depth, tmpaddr); |
1126 | } | |
7ecb6532 | 1127 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b | 1128 | { |
edb0470b | 1129 | if (outermost_context_p ()) |
0963b4bd | 1130 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1131 | complaint (_("`.eb' symbol without matching `.bb' " |
3e43a32a | 1132 | "symbol ignored starting at symnum %d"), |
23136709 | 1133 | cs->c_symnum); |
c5aa993b JM |
1134 | break; |
1135 | } | |
c906108c | 1136 | |
a60f3166 TT |
1137 | struct context_stack cstk = pop_context (); |
1138 | if (depth-- != cstk.depth) | |
c5aa993b | 1139 | { |
b98664d3 | 1140 | complaint (_("Mismatched .eb symbol ignored " |
3e43a32a | 1141 | "starting at symnum %d"), |
23136709 | 1142 | symnum); |
c5aa993b JM |
1143 | break; |
1144 | } | |
e148f09d | 1145 | if (*get_local_symbols () && !outermost_context_p ()) |
c5aa993b | 1146 | { |
b3b3bada | 1147 | tmpaddr = cs->c_value + objfile->text_section_offset (); |
c5aa993b | 1148 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1149 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 1150 | cstk.start_addr, tmpaddr); |
c5aa993b JM |
1151 | } |
1152 | /* Now pop locals of block just finished. */ | |
e148f09d | 1153 | *get_local_symbols () = cstk.locals; |
c5aa993b JM |
1154 | } |
1155 | break; | |
c906108c | 1156 | |
c5aa993b | 1157 | default: |
96baa820 | 1158 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1159 | break; |
c906108c SS |
1160 | } |
1161 | } | |
1162 | ||
1b6bc7e0 CF |
1163 | if ((nsyms == 0) && (pe_file)) |
1164 | { | |
c2f20dd6 | 1165 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1166 | executable, so try to read the export table. */ |
8dddcb8f | 1167 | read_pe_exported_syms (reader, objfile); |
1b6bc7e0 CF |
1168 | } |
1169 | ||
46212e0b | 1170 | if (get_last_source_file ()) |
59dfe8ad | 1171 | coff_end_compunit_symtab (objfile); |
c906108c SS |
1172 | |
1173 | /* Patch up any opaque types (references to types that are not defined | |
1174 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 | 1175 | { |
b669c953 | 1176 | for (compunit_symtab *cu : objfile->compunits ()) |
d5da8b3c | 1177 | { |
102cc235 | 1178 | for (symtab *s : cu->filetabs ()) |
d5da8b3c TT |
1179 | patch_opaque_types (s); |
1180 | } | |
43f3e411 | 1181 | } |
c906108c | 1182 | |
dd707e8e | 1183 | coffread_objfile = NULL; |
c906108c SS |
1184 | } |
1185 | \f | |
1186 | /* Routines for reading headers and symbols from executable. */ | |
1187 | ||
aff410f1 MS |
1188 | /* Read the next symbol, swap it, and return it in both |
1189 | internal_syment form, and coff_symbol form. Also return its first | |
1190 | auxent, if any, in internal_auxent form, and skip any other | |
1191 | auxents. */ | |
c906108c SS |
1192 | |
1193 | static void | |
aa1ee363 AC |
1194 | read_one_sym (struct coff_symbol *cs, |
1195 | struct internal_syment *sym, | |
1196 | union internal_auxent *aux) | |
c906108c SS |
1197 | { |
1198 | int i; | |
3b016d57 | 1199 | bfd_size_type bytes; |
c906108c SS |
1200 | |
1201 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1202 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1203 | if (bytes != local_symesz) | |
4262abfb | 1204 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1205 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1206 | cs->c_naux = sym->n_numaux & 0xff; |
1207 | if (cs->c_naux >= 1) | |
1208 | { | |
3b016d57 DJ |
1209 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1210 | if (bytes != local_auxesz) | |
4262abfb | 1211 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1212 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1213 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1214 | 0, cs->c_naux, (char *) aux); |
1215 | /* If more than one aux entry, read past it (only the first aux | |
dda83cd7 | 1216 | is important). */ |
c5aa993b | 1217 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1218 | { |
1219 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1220 | if (bytes != local_auxesz) | |
4262abfb JK |
1221 | error (_("%s: error reading symbols"), |
1222 | objfile_name (coffread_objfile)); | |
3b016d57 | 1223 | } |
c906108c SS |
1224 | } |
1225 | cs->c_name = getsymname (sym); | |
1226 | cs->c_value = sym->n_value; | |
1227 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1228 | cs->c_secnum = sym->n_scnum; | |
1229 | cs->c_type = (unsigned) sym->n_type; | |
1230 | if (!SDB_TYPE (cs->c_type)) | |
1231 | cs->c_type = 0; | |
1232 | ||
1233 | #if 0 | |
1234 | if (cs->c_sclass & 128) | |
3d263c1d | 1235 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1236 | #endif |
1237 | ||
1238 | symnum += 1 + cs->c_naux; | |
1239 | ||
1240 | /* The PE file format stores symbol values as offsets within the | |
1241 | section, rather than as absolute addresses. We correct that | |
1242 | here, if the symbol has an appropriate storage class. FIXME: We | |
1243 | should use BFD to read the symbols, rather than duplicating the | |
1244 | work here. */ | |
1245 | if (pe_file) | |
1246 | { | |
1247 | switch (cs->c_sclass) | |
1248 | { | |
1249 | case C_EXT: | |
1250 | case C_THUMBEXT: | |
1251 | case C_THUMBEXTFUNC: | |
1252 | case C_SECTION: | |
1253 | case C_NT_WEAK: | |
1254 | case C_STAT: | |
1255 | case C_THUMBSTAT: | |
1256 | case C_THUMBSTATFUNC: | |
1257 | case C_LABEL: | |
1258 | case C_THUMBLABEL: | |
1259 | case C_BLOCK: | |
1260 | case C_FCN: | |
1261 | case C_EFCN: | |
1262 | if (cs->c_secnum != 0) | |
1263 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1264 | break; | |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | \f | |
aff410f1 | 1269 | /* Support for string table handling. */ |
c906108c | 1270 | |
c906108c | 1271 | static int |
a9e48095 | 1272 | init_stringtab (bfd *abfd, file_ptr offset, gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1273 | { |
1274 | long length; | |
1275 | int val; | |
1276 | unsigned char lengthbuf[4]; | |
1277 | ||
c906108c | 1278 | /* If the file is stripped, the offset might be zero, indicating no |
aff410f1 | 1279 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1280 | if (offset == 0) |
1281 | return 0; | |
1282 | ||
1283 | if (bfd_seek (abfd, offset, 0) < 0) | |
1284 | return -1; | |
1285 | ||
3a42e9d0 | 1286 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1287 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1288 | |
c906108c | 1289 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1290 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1291 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1292 | return 0; | |
1293 | ||
e2a03548 TT |
1294 | storage->reset ((char *) xmalloc (length)); |
1295 | stringtab = storage->get (); | |
aff410f1 MS |
1296 | /* This is in target format (probably not very useful, and not |
1297 | currently used), not host format. */ | |
c906108c | 1298 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1299 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1300 | return 0; |
1301 | ||
aff410f1 MS |
1302 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1303 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1304 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1305 | return -1; | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
c906108c | 1310 | static char * |
fba45db2 | 1311 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1312 | { |
c5aa993b | 1313 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1314 | char *result; |
1315 | ||
1316 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1317 | { | |
1318 | /* FIXME: Probably should be detecting corrupt symbol files by | |
dda83cd7 | 1319 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1320 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1321 | } | |
1322 | else | |
1323 | { | |
1324 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1325 | buffer[SYMNMLEN] = '\0'; | |
1326 | result = buffer; | |
1327 | } | |
1328 | return result; | |
1329 | } | |
1330 | ||
aff410f1 MS |
1331 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1332 | Return only the last component of the name. Result is in static | |
1333 | storage and is only good for temporary use. */ | |
c906108c | 1334 | |
9f37bbcc | 1335 | static const char * |
fba45db2 | 1336 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1337 | { |
1338 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1339 | const char *result; |
c906108c | 1340 | |
b08625af | 1341 | if (aux_entry->x_file.x_n.x_n.x_zeroes == 0) |
9e91a352 | 1342 | { |
b08625af | 1343 | if (strlen (stringtab + aux_entry->x_file.x_n.x_n.x_offset) >= BUFSIZ) |
9e91a352 | 1344 | internal_error (__FILE__, __LINE__, _("coff file name too long")); |
b08625af | 1345 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_n.x_offset); |
9e91a352 | 1346 | } |
c906108c SS |
1347 | else |
1348 | { | |
b08625af | 1349 | strncpy (buffer, aux_entry->x_file.x_n.x_fname, FILNMLEN); |
c906108c SS |
1350 | buffer[FILNMLEN] = '\0'; |
1351 | } | |
1352 | result = buffer; | |
1353 | ||
1354 | /* FIXME: We should not be throwing away the information about what | |
1355 | directory. It should go into dirname of the symtab, or some such | |
1356 | place. */ | |
9f37bbcc | 1357 | result = lbasename (result); |
c906108c SS |
1358 | return (result); |
1359 | } | |
1360 | \f | |
1361 | /* Support for line number handling. */ | |
1362 | ||
c906108c SS |
1363 | /* Read in all the line numbers for fast lookups later. Leave them in |
1364 | external (unswapped) format in memory; we'll swap them as we enter | |
1365 | them into GDB's data structures. */ | |
c5aa993b | 1366 | |
c906108c | 1367 | static int |
a9e48095 | 1368 | init_lineno (bfd *abfd, file_ptr offset, file_ptr size, |
e2a03548 | 1369 | gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1370 | { |
1371 | int val; | |
1372 | ||
1373 | linetab_offset = offset; | |
1374 | linetab_size = size; | |
1375 | ||
c906108c SS |
1376 | if (size == 0) |
1377 | return 0; | |
1378 | ||
1379 | if (bfd_seek (abfd, offset, 0) < 0) | |
1380 | return -1; | |
c5aa993b | 1381 | |
aff410f1 | 1382 | /* Allocate the desired table, plus a sentinel. */ |
e2a03548 TT |
1383 | storage->reset ((char *) xmalloc (size + local_linesz)); |
1384 | linetab = storage->get (); | |
c906108c | 1385 | |
e2a03548 | 1386 | val = bfd_bread (storage->get (), size, abfd); |
c906108c SS |
1387 | if (val != size) |
1388 | return -1; | |
1389 | ||
aff410f1 | 1390 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1391 | memset (linetab + size, 0, local_linesz); |
1392 | ||
1393 | return 0; | |
1394 | } | |
1395 | ||
c906108c SS |
1396 | #if !defined (L_LNNO32) |
1397 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1398 | #endif | |
1399 | ||
1400 | static void | |
a9e48095 | 1401 | enter_linenos (file_ptr file_offset, int first_line, |
aa1ee363 | 1402 | int last_line, struct objfile *objfile) |
c906108c | 1403 | { |
08feed99 | 1404 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 | 1405 | char *rawptr; |
c906108c SS |
1406 | struct internal_lineno lptr; |
1407 | ||
1408 | if (!linetab) | |
c5aa993b | 1409 | return; |
c906108c SS |
1410 | if (file_offset < linetab_offset) |
1411 | { | |
d5d24e12 LM |
1412 | complaint (_("Line number pointer %s lower than start of line numbers"), |
1413 | plongest (file_offset)); | |
aff410f1 | 1414 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1415 | return; |
aff410f1 MS |
1416 | file_offset += linetab_offset; /* Try reading at that linetab |
1417 | offset. */ | |
c906108c | 1418 | } |
c5aa993b | 1419 | |
c906108c SS |
1420 | rawptr = &linetab[file_offset - linetab_offset]; |
1421 | ||
aff410f1 | 1422 | /* Skip first line entry for each function. */ |
c906108c | 1423 | rawptr += local_linesz; |
aff410f1 | 1424 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1425 | first_line--; |
1426 | ||
e6a8a7d2 EZ |
1427 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1428 | info), the next function's L_LNNO32 might not be zero, so don't | |
1429 | overstep the table's end in any case. */ | |
1430 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1431 | { |
1432 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1433 | rawptr += local_linesz; | |
e6a8a7d2 | 1434 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1435 | we exit. */ |
c5aa993b | 1436 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1437 | { |
1438 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
b3b3bada | 1439 | addr += objfile->text_section_offset (); |
3c65e5b3 | 1440 | record_line (get_current_subfile (), |
aff410f1 | 1441 | first_line + L_LNNO32 (&lptr), |
fbf65064 UW |
1442 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1443 | } | |
c5aa993b JM |
1444 | else |
1445 | break; | |
1446 | } | |
c906108c SS |
1447 | } |
1448 | \f | |
1449 | static void | |
fba45db2 | 1450 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1451 | { |
52f0bd74 AC |
1452 | struct type *target = TYPE_TARGET_TYPE (type); |
1453 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1f704f76 | 1454 | int field_size = real_target->num_fields () * sizeof (struct field); |
c906108c SS |
1455 | |
1456 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1f704f76 | 1457 | target->set_num_fields (real_target->num_fields ()); |
c906108c | 1458 | |
3cabb6b0 SM |
1459 | field *fields = (struct field *) TYPE_ALLOC (target, field_size); |
1460 | memcpy (fields, real_target->fields (), field_size); | |
1461 | target->set_fields (fields); | |
c906108c | 1462 | |
7d93a1e0 | 1463 | if (real_target->name ()) |
c906108c | 1464 | { |
0d5cff50 DE |
1465 | /* The previous copy of TYPE_NAME is allocated by |
1466 | process_coff_symbol. */ | |
84d53fa9 | 1467 | xfree ((char *) target->name ()); |
7d93a1e0 | 1468 | target->set_name (xstrdup (real_target->name ())); |
c906108c SS |
1469 | } |
1470 | } | |
1471 | ||
1472 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1473 | so that they can be used to print out opaque data structures |
1474 | properly. */ | |
c906108c SS |
1475 | |
1476 | static void | |
fba45db2 | 1477 | patch_opaque_types (struct symtab *s) |
c906108c | 1478 | { |
582942f4 | 1479 | const struct block *b; |
8157b174 | 1480 | struct block_iterator iter; |
52f0bd74 | 1481 | struct symbol *real_sym; |
c5aa993b | 1482 | |
aff410f1 | 1483 | /* Go through the per-file symbols only. */ |
44281e6c | 1484 | b = BLOCKVECTOR_BLOCK (s->compunit ()->blockvector (), STATIC_BLOCK); |
de4f826b | 1485 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1486 | { |
1487 | /* Find completed typedefs to use to fix opaque ones. | |
dda83cd7 SM |
1488 | Remove syms from the chain when their types are stored, |
1489 | but search the whole chain, as there may be several syms | |
1490 | from different files with the same name. */ | |
66d7f48f | 1491 | if (real_sym->aclass () == LOC_TYPEDEF |
6c9c307c | 1492 | && real_sym->domain () == VAR_DOMAIN |
5f9c5a63 SM |
1493 | && real_sym->type ()->code () == TYPE_CODE_PTR |
1494 | && TYPE_LENGTH (TYPE_TARGET_TYPE (real_sym->type ())) != 0) | |
c906108c | 1495 | { |
987012b8 | 1496 | const char *name = real_sym->linkage_name (); |
aa1ee363 AC |
1497 | int hash = hashname (name); |
1498 | struct symbol *sym, *prev; | |
c5aa993b | 1499 | |
c906108c SS |
1500 | prev = 0; |
1501 | for (sym = opaque_type_chain[hash]; sym;) | |
1502 | { | |
987012b8 CB |
1503 | if (name[0] == sym->linkage_name ()[0] |
1504 | && strcmp (name + 1, sym->linkage_name () + 1) == 0) | |
c906108c SS |
1505 | { |
1506 | if (prev) | |
4aeddc50 | 1507 | prev->set_value_chain (sym->value_chain ()); |
c906108c | 1508 | else |
4aeddc50 | 1509 | opaque_type_chain[hash] = sym->value_chain (); |
c5aa993b | 1510 | |
5f9c5a63 | 1511 | patch_type (sym->type (), real_sym->type ()); |
c5aa993b | 1512 | |
c906108c | 1513 | if (prev) |
4aeddc50 | 1514 | sym = prev->value_chain (); |
c906108c | 1515 | else |
4aeddc50 | 1516 | sym = opaque_type_chain[hash]; |
c906108c SS |
1517 | } |
1518 | else | |
1519 | { | |
1520 | prev = sym; | |
4aeddc50 | 1521 | sym->set_value_chain (sym); |
c906108c SS |
1522 | } |
1523 | } | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | \f | |
768a979c UW |
1528 | static int |
1529 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1530 | { | |
4aeddc50 | 1531 | return gdbarch_sdb_reg_to_regnum (gdbarch, sym->value_longest ()); |
768a979c UW |
1532 | } |
1533 | ||
1534 | static const struct symbol_register_ops coff_register_funcs = { | |
1535 | coff_reg_to_regnum | |
1536 | }; | |
1537 | ||
f1e6e072 TT |
1538 | /* The "aclass" index for computed COFF symbols. */ |
1539 | ||
1540 | static int coff_register_index; | |
1541 | ||
c906108c | 1542 | static struct symbol * |
aa1ee363 AC |
1543 | process_coff_symbol (struct coff_symbol *cs, |
1544 | union internal_auxent *aux, | |
fba45db2 | 1545 | struct objfile *objfile) |
c906108c | 1546 | { |
8c14c3a3 | 1547 | struct symbol *sym = new (&objfile->objfile_obstack) symbol; |
c906108c SS |
1548 | char *name; |
1549 | ||
c906108c SS |
1550 | name = cs->c_name; |
1551 | name = EXTERNAL_NAME (name, objfile->obfd); | |
d3ecddab CB |
1552 | sym->set_language (get_current_subfile ()->language, |
1553 | &objfile->objfile_obstack); | |
4d4eaa30 | 1554 | sym->compute_and_set_names (name, true, objfile->per_bfd); |
c906108c SS |
1555 | |
1556 | /* default assumptions */ | |
4aeddc50 | 1557 | sym->set_value_longest (cs->c_value); |
6c9c307c | 1558 | sym->set_domain (VAR_DOMAIN); |
a52d653e | 1559 | sym->set_section_index (cs_to_section (cs, objfile)); |
c906108c SS |
1560 | |
1561 | if (ISFCN (cs->c_type)) | |
1562 | { | |
4aeddc50 SM |
1563 | sym->set_value_longest |
1564 | (sym->value_longest () + objfile->text_section_offset ()); | |
5f9c5a63 SM |
1565 | sym->set_type |
1566 | (lookup_function_type (decode_function_type (cs, cs->c_type, | |
1567 | aux, objfile))); | |
c906108c | 1568 | |
ba44b1a3 | 1569 | sym->set_aclass_index (LOC_BLOCK); |
c906108c SS |
1570 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1571 | || cs->c_sclass == C_THUMBSTATFUNC) | |
e148f09d | 1572 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1573 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1574 | || cs->c_sclass == C_THUMBEXTFUNC) | |
e148f09d | 1575 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1576 | } |
1577 | else | |
1578 | { | |
5f9c5a63 | 1579 | sym->set_type (decode_type (cs, cs->c_type, aux, objfile)); |
c906108c SS |
1580 | switch (cs->c_sclass) |
1581 | { | |
c5aa993b JM |
1582 | case C_NULL: |
1583 | break; | |
c906108c | 1584 | |
c5aa993b | 1585 | case C_AUTO: |
ba44b1a3 | 1586 | sym->set_aclass_index (LOC_LOCAL); |
e148f09d | 1587 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1588 | break; |
c906108c | 1589 | |
c5aa993b JM |
1590 | case C_THUMBEXT: |
1591 | case C_THUMBEXTFUNC: | |
1592 | case C_EXT: | |
ba44b1a3 | 1593 | sym->set_aclass_index (LOC_STATIC); |
4aeddc50 SM |
1594 | sym->set_value_address ((CORE_ADDR) cs->c_value |
1595 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); | |
e148f09d | 1596 | add_symbol_to_list (sym, get_global_symbols ()); |
c5aa993b | 1597 | break; |
c906108c | 1598 | |
c5aa993b JM |
1599 | case C_THUMBSTAT: |
1600 | case C_THUMBSTATFUNC: | |
1601 | case C_STAT: | |
ba44b1a3 | 1602 | sym->set_aclass_index (LOC_STATIC); |
4aeddc50 SM |
1603 | sym->set_value_address ((CORE_ADDR) cs->c_value |
1604 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); | |
c5aa993b JM |
1605 | if (within_function) |
1606 | { | |
aff410f1 | 1607 | /* Static symbol of local scope. */ |
e148f09d | 1608 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1609 | } |
c5aa993b JM |
1610 | else |
1611 | { | |
aff410f1 | 1612 | /* Static symbol at top level of file. */ |
e148f09d | 1613 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c | 1614 | } |
c5aa993b | 1615 | break; |
c906108c SS |
1616 | |
1617 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1618 | case C_GLBLREG: |
c906108c | 1619 | #endif |
c5aa993b | 1620 | case C_REG: |
ba44b1a3 | 1621 | sym->set_aclass_index (coff_register_index); |
4aeddc50 | 1622 | sym->set_value_longest (cs->c_value); |
e148f09d | 1623 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1624 | break; |
c906108c | 1625 | |
c5aa993b JM |
1626 | case C_THUMBLABEL: |
1627 | case C_LABEL: | |
1628 | break; | |
c906108c | 1629 | |
c5aa993b | 1630 | case C_ARG: |
ba44b1a3 | 1631 | sym->set_aclass_index (LOC_ARG); |
d9743061 | 1632 | sym->set_is_argument (1); |
e148f09d | 1633 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1634 | break; |
c906108c | 1635 | |
c5aa993b | 1636 | case C_REGPARM: |
ba44b1a3 | 1637 | sym->set_aclass_index (coff_register_index); |
d9743061 | 1638 | sym->set_is_argument (1); |
4aeddc50 | 1639 | sym->set_value_longest (cs->c_value); |
e148f09d | 1640 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1641 | break; |
c906108c | 1642 | |
c5aa993b | 1643 | case C_TPDEF: |
ba44b1a3 | 1644 | sym->set_aclass_index (LOC_TYPEDEF); |
6c9c307c | 1645 | sym->set_domain (VAR_DOMAIN); |
c5aa993b | 1646 | |
0963b4bd | 1647 | /* If type has no name, give it one. */ |
5f9c5a63 | 1648 | if (sym->type ()->name () == 0) |
c5aa993b | 1649 | { |
5f9c5a63 SM |
1650 | if (sym->type ()->code () == TYPE_CODE_PTR |
1651 | || sym->type ()->code () == TYPE_CODE_FUNC) | |
c5aa993b | 1652 | { |
aff410f1 MS |
1653 | /* If we are giving a name to a type such as |
1654 | "pointer to foo" or "function returning foo", we | |
1655 | better not set the TYPE_NAME. If the program | |
1656 | contains "typedef char *caddr_t;", we don't want | |
1657 | all variables of type char * to print as caddr_t. | |
1658 | This is not just a consequence of GDB's type | |
1659 | management; CC and GCC (at least through version | |
1660 | 2.4) both output variables of either type char * | |
1661 | or caddr_t with the type refering to the C_TPDEF | |
1662 | symbol for caddr_t. If a future compiler cleans | |
1663 | this up it GDB is not ready for it yet, but if it | |
1664 | becomes ready we somehow need to disable this | |
1665 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1666 | |
1667 | Sigh. | |
1668 | ||
1669 | Fortunately, this check seems not to be necessary | |
1670 | for anything except pointers or functions. */ | |
1671 | ; | |
1672 | } | |
1673 | else | |
5f9c5a63 | 1674 | sym->type ()->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1675 | } |
c906108c | 1676 | |
aff410f1 MS |
1677 | /* Keep track of any type which points to empty structured |
1678 | type, so it can be filled from a definition from another | |
1679 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1680 | not an empty structured type, though; the forward | |
1681 | references work themselves out via the magic of | |
1682 | coff_lookup_type. */ | |
5f9c5a63 SM |
1683 | if (sym->type ()->code () == TYPE_CODE_PTR |
1684 | && TYPE_LENGTH (TYPE_TARGET_TYPE (sym->type ())) == 0 | |
1685 | && TYPE_TARGET_TYPE (sym->type ())->code () | |
78134374 | 1686 | != TYPE_CODE_UNDEF) |
c5aa993b | 1687 | { |
987012b8 | 1688 | int i = hashname (sym->linkage_name ()); |
c906108c | 1689 | |
4aeddc50 | 1690 | sym->set_value_chain (opaque_type_chain[i]); |
c5aa993b JM |
1691 | opaque_type_chain[i] = sym; |
1692 | } | |
e148f09d | 1693 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1694 | break; |
c906108c | 1695 | |
c5aa993b JM |
1696 | case C_STRTAG: |
1697 | case C_UNTAG: | |
1698 | case C_ENTAG: | |
ba44b1a3 | 1699 | sym->set_aclass_index (LOC_TYPEDEF); |
6c9c307c | 1700 | sym->set_domain (STRUCT_DOMAIN); |
c5aa993b JM |
1701 | |
1702 | /* Some compilers try to be helpful by inventing "fake" | |
1703 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1704 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
5f9c5a63 | 1705 | if (sym->type ()->name () == 0) |
987012b8 CB |
1706 | if (sym->linkage_name () != NULL |
1707 | && *sym->linkage_name () != '~' | |
1708 | && *sym->linkage_name () != '.') | |
5f9c5a63 | 1709 | sym->type ()->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1710 | |
e148f09d | 1711 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1712 | break; |
c906108c | 1713 | |
c5aa993b JM |
1714 | default: |
1715 | break; | |
c906108c SS |
1716 | } |
1717 | } | |
1718 | return sym; | |
1719 | } | |
1720 | \f | |
1721 | /* Decode a coff type specifier; return the type that is meant. */ | |
1722 | ||
1723 | static struct type * | |
aa1ee363 | 1724 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1725 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1726 | { |
52f0bd74 | 1727 | struct type *type = 0; |
c906108c SS |
1728 | unsigned int new_c_type; |
1729 | ||
1730 | if (c_type & ~N_BTMASK) | |
1731 | { | |
1732 | new_c_type = DECREF (c_type); | |
1733 | if (ISPTR (c_type)) | |
1734 | { | |
5e2b427d | 1735 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1736 | type = lookup_pointer_type (type); |
1737 | } | |
1738 | else if (ISFCN (c_type)) | |
1739 | { | |
5e2b427d | 1740 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1741 | type = lookup_function_type (type); |
1742 | } | |
1743 | else if (ISARY (c_type)) | |
1744 | { | |
1745 | int i, n; | |
aa1ee363 | 1746 | unsigned short *dim; |
c906108c SS |
1747 | struct type *base_type, *index_type, *range_type; |
1748 | ||
1749 | /* Define an array type. */ | |
aff410f1 | 1750 | /* auxent refers to array, not base type. */ |
c906108c SS |
1751 | if (aux->x_sym.x_tagndx.l == 0) |
1752 | cs->c_naux = 0; | |
1753 | ||
aff410f1 | 1754 | /* Shift the indices down. */ |
c906108c SS |
1755 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1756 | i = 1; | |
1757 | n = dim[0]; | |
1758 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1759 | *dim = *(dim + 1); | |
1760 | *dim = 0; | |
1761 | ||
5e2b427d | 1762 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1763 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 1764 | range_type |
cafb3438 | 1765 | = create_static_range_type (NULL, index_type, 0, n - 1); |
c906108c | 1766 | type = |
cafb3438 | 1767 | create_array_type (NULL, base_type, range_type); |
c906108c SS |
1768 | } |
1769 | return type; | |
1770 | } | |
1771 | ||
aff410f1 MS |
1772 | /* Reference to existing type. This only occurs with the struct, |
1773 | union, and enum types. EPI a29k coff fakes us out by producing | |
1774 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1775 | unions, and enums, so we have to check the c_sclass field. SCO | |
1776 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1777 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1778 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1779 | { | |
1780 | if (cs->c_sclass != C_STRTAG | |
1781 | && cs->c_sclass != C_UNTAG | |
1782 | && cs->c_sclass != C_ENTAG | |
1783 | && aux->x_sym.x_tagndx.l >= 0) | |
1784 | { | |
1785 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1786 | return type; | |
1787 | } | |
1788 | else | |
1789 | { | |
b98664d3 | 1790 | complaint (_("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1791 | cs->c_name); |
aff410f1 | 1792 | /* And fall through to decode_base_type... */ |
c906108c SS |
1793 | } |
1794 | } | |
1795 | ||
5e2b427d | 1796 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1797 | } |
1798 | ||
1799 | /* Decode a coff type specifier for function definition; | |
1800 | return the type that the function returns. */ | |
1801 | ||
1802 | static struct type * | |
aff410f1 MS |
1803 | decode_function_type (struct coff_symbol *cs, |
1804 | unsigned int c_type, | |
1805 | union internal_auxent *aux, | |
1806 | struct objfile *objfile) | |
c906108c SS |
1807 | { |
1808 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1809 | cs->c_naux = 0; /* auxent refers to function, not base |
1810 | type. */ | |
c906108c | 1811 | |
5e2b427d | 1812 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1813 | } |
1814 | \f | |
aff410f1 | 1815 | /* Basic C types. */ |
c906108c SS |
1816 | |
1817 | static struct type * | |
aff410f1 MS |
1818 | decode_base_type (struct coff_symbol *cs, |
1819 | unsigned int c_type, | |
1820 | union internal_auxent *aux, | |
1821 | struct objfile *objfile) | |
c906108c | 1822 | { |
08feed99 | 1823 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
1824 | struct type *type; |
1825 | ||
1826 | switch (c_type) | |
1827 | { | |
c5aa993b | 1828 | case T_NULL: |
aff410f1 | 1829 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1830 | return objfile_type (objfile)->builtin_void; |
c906108c | 1831 | |
c906108c | 1832 | #ifdef T_VOID |
c5aa993b JM |
1833 | case T_VOID: |
1834 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1835 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1836 | #endif |
1837 | ||
c5aa993b | 1838 | case T_CHAR: |
46bf5051 | 1839 | return objfile_type (objfile)->builtin_char; |
c906108c | 1840 | |
c5aa993b | 1841 | case T_SHORT: |
46bf5051 | 1842 | return objfile_type (objfile)->builtin_short; |
c906108c | 1843 | |
c5aa993b | 1844 | case T_INT: |
46bf5051 | 1845 | return objfile_type (objfile)->builtin_int; |
c906108c | 1846 | |
c5aa993b JM |
1847 | case T_LONG: |
1848 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1849 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1850 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1851 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1852 | else |
46bf5051 | 1853 | return objfile_type (objfile)->builtin_long; |
c906108c | 1854 | |
c5aa993b | 1855 | case T_FLOAT: |
46bf5051 | 1856 | return objfile_type (objfile)->builtin_float; |
c906108c | 1857 | |
c5aa993b | 1858 | case T_DOUBLE: |
46bf5051 | 1859 | return objfile_type (objfile)->builtin_double; |
c906108c | 1860 | |
c5aa993b | 1861 | case T_LNGDBL: |
46bf5051 | 1862 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1863 | |
c5aa993b JM |
1864 | case T_STRUCT: |
1865 | if (cs->c_naux != 1) | |
1866 | { | |
aff410f1 | 1867 | /* Anonymous structure type. */ |
c5aa993b | 1868 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1869 | type->set_code (TYPE_CODE_STRUCT); |
d0e39ea2 | 1870 | type->set_name (NULL); |
c5aa993b JM |
1871 | INIT_CPLUS_SPECIFIC (type); |
1872 | TYPE_LENGTH (type) = 0; | |
3cabb6b0 | 1873 | type->set_fields (nullptr); |
5e33d5f4 | 1874 | type->set_num_fields (0); |
c5aa993b JM |
1875 | } |
1876 | else | |
1877 | { | |
1878 | type = coff_read_struct_type (cs->c_symnum, | |
1879 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1880 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1881 | objfile); | |
c5aa993b JM |
1882 | } |
1883 | return type; | |
c906108c | 1884 | |
c5aa993b JM |
1885 | case T_UNION: |
1886 | if (cs->c_naux != 1) | |
1887 | { | |
aff410f1 | 1888 | /* Anonymous union type. */ |
c5aa993b | 1889 | type = coff_alloc_type (cs->c_symnum); |
d0e39ea2 | 1890 | type->set_name (NULL); |
c5aa993b JM |
1891 | INIT_CPLUS_SPECIFIC (type); |
1892 | TYPE_LENGTH (type) = 0; | |
3cabb6b0 | 1893 | type->set_fields (nullptr); |
5e33d5f4 | 1894 | type->set_num_fields (0); |
c5aa993b JM |
1895 | } |
1896 | else | |
1897 | { | |
1898 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1899 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1900 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1901 | objfile); | |
c5aa993b | 1902 | } |
67607e24 | 1903 | type->set_code (TYPE_CODE_UNION); |
c5aa993b | 1904 | return type; |
c906108c | 1905 | |
c5aa993b JM |
1906 | case T_ENUM: |
1907 | if (cs->c_naux != 1) | |
1908 | { | |
aff410f1 | 1909 | /* Anonymous enum type. */ |
c5aa993b | 1910 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1911 | type->set_code (TYPE_CODE_ENUM); |
d0e39ea2 | 1912 | type->set_name (NULL); |
c5aa993b | 1913 | TYPE_LENGTH (type) = 0; |
3cabb6b0 | 1914 | type->set_fields (nullptr); |
5e33d5f4 | 1915 | type->set_num_fields (0); |
c5aa993b JM |
1916 | } |
1917 | else | |
1918 | { | |
1919 | type = coff_read_enum_type (cs->c_symnum, | |
1920 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1921 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1922 | objfile); | |
c5aa993b JM |
1923 | } |
1924 | return type; | |
1925 | ||
1926 | case T_MOE: | |
aff410f1 | 1927 | /* Shouldn't show up here. */ |
c5aa993b | 1928 | break; |
c906108c | 1929 | |
c5aa993b | 1930 | case T_UCHAR: |
46bf5051 | 1931 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1932 | |
c5aa993b | 1933 | case T_USHORT: |
46bf5051 | 1934 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1935 | |
c5aa993b | 1936 | case T_UINT: |
46bf5051 | 1937 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1938 | |
c5aa993b JM |
1939 | case T_ULONG: |
1940 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1941 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1942 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1943 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1944 | else |
46bf5051 | 1945 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1946 | } |
b98664d3 | 1947 | complaint (_("Unexpected type for symbol %s"), cs->c_name); |
46bf5051 | 1948 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1949 | } |
1950 | \f | |
1951 | /* This page contains subroutines of read_type. */ | |
1952 | ||
1953 | /* Read the description of a structure (or union type) and return an | |
1954 | object describing the type. */ | |
1955 | ||
1956 | static struct type * | |
5e2b427d UW |
1957 | coff_read_struct_type (int index, int length, int lastsym, |
1958 | struct objfile *objfile) | |
c906108c SS |
1959 | { |
1960 | struct nextfield | |
1961 | { | |
1962 | struct nextfield *next; | |
1963 | struct field field; | |
1964 | }; | |
1965 | ||
52f0bd74 AC |
1966 | struct type *type; |
1967 | struct nextfield *list = 0; | |
fe978cb0 | 1968 | struct nextfield *newobj; |
c906108c | 1969 | int nfields = 0; |
52f0bd74 | 1970 | int n; |
c906108c SS |
1971 | char *name; |
1972 | struct coff_symbol member_sym; | |
52f0bd74 | 1973 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1974 | struct internal_syment sub_sym; |
1975 | union internal_auxent sub_aux; | |
1976 | int done = 0; | |
1977 | ||
1978 | type = coff_alloc_type (index); | |
67607e24 | 1979 | type->set_code (TYPE_CODE_STRUCT); |
c5aa993b | 1980 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1981 | TYPE_LENGTH (type) = length; |
1982 | ||
1983 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1984 | { | |
1985 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1986 | name = ms->c_name; | |
5e2b427d | 1987 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
1988 | |
1989 | switch (ms->c_sclass) | |
1990 | { | |
c5aa993b JM |
1991 | case C_MOS: |
1992 | case C_MOU: | |
1993 | ||
1994 | /* Get space to record the next field's data. */ | |
8d749320 | 1995 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
1996 | newobj->next = list; |
1997 | list = newobj; | |
c5aa993b JM |
1998 | |
1999 | /* Save the data. */ | |
d3fd12df SM |
2000 | list->field.set_name (obstack_strdup (&objfile->objfile_obstack, |
2001 | name)); | |
5d14b6e5 SM |
2002 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
2003 | objfile)); | |
cd3f655c | 2004 | list->field.set_loc_bitpos (8 * ms->c_value); |
c5aa993b JM |
2005 | FIELD_BITSIZE (list->field) = 0; |
2006 | nfields++; | |
2007 | break; | |
c906108c | 2008 | |
c5aa993b JM |
2009 | case C_FIELD: |
2010 | ||
2011 | /* Get space to record the next field's data. */ | |
8d749320 | 2012 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2013 | newobj->next = list; |
2014 | list = newobj; | |
c5aa993b JM |
2015 | |
2016 | /* Save the data. */ | |
d3fd12df SM |
2017 | list->field.set_name (obstack_strdup (&objfile->objfile_obstack, |
2018 | name)); | |
5d14b6e5 SM |
2019 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
2020 | objfile)); | |
cd3f655c | 2021 | list->field.set_loc_bitpos (ms->c_value); |
c5aa993b JM |
2022 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2023 | nfields++; | |
2024 | break; | |
c906108c | 2025 | |
c5aa993b JM |
2026 | case C_EOS: |
2027 | done = 1; | |
2028 | break; | |
c906108c SS |
2029 | } |
2030 | } | |
2031 | /* Now create the vector of fields, and record how big it is. */ | |
2032 | ||
5e33d5f4 | 2033 | type->set_num_fields (nfields); |
3cabb6b0 SM |
2034 | type->set_fields |
2035 | ((struct field *) TYPE_ALLOC (type, sizeof (struct field) * nfields)); | |
c906108c SS |
2036 | |
2037 | /* Copy the saved-up fields into the field vector. */ | |
2038 | ||
2039 | for (n = nfields; list; list = list->next) | |
ceacbf6e | 2040 | type->field (--n) = list->field; |
c906108c SS |
2041 | |
2042 | return type; | |
2043 | } | |
2044 | \f | |
2045 | /* Read a definition of an enumeration type, | |
2046 | and create and return a suitable type object. | |
2047 | Also defines the symbols that represent the values of the type. */ | |
2048 | ||
c906108c | 2049 | static struct type * |
5e2b427d UW |
2050 | coff_read_enum_type (int index, int length, int lastsym, |
2051 | struct objfile *objfile) | |
c906108c | 2052 | { |
08feed99 | 2053 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 AC |
2054 | struct symbol *sym; |
2055 | struct type *type; | |
c906108c SS |
2056 | int nsyms = 0; |
2057 | int done = 0; | |
2058 | struct pending **symlist; | |
2059 | struct coff_symbol member_sym; | |
52f0bd74 | 2060 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2061 | struct internal_syment sub_sym; |
2062 | union internal_auxent sub_aux; | |
2063 | struct pending *osyms, *syms; | |
2064 | int o_nsyms; | |
52f0bd74 | 2065 | int n; |
c906108c SS |
2066 | char *name; |
2067 | int unsigned_enum = 1; | |
2068 | ||
2069 | type = coff_alloc_type (index); | |
2070 | if (within_function) | |
e148f09d | 2071 | symlist = get_local_symbols (); |
c906108c | 2072 | else |
e148f09d | 2073 | symlist = get_file_symbols (); |
c906108c SS |
2074 | osyms = *symlist; |
2075 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2076 | ||
2077 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2078 | { | |
2079 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2080 | name = ms->c_name; | |
5e2b427d | 2081 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2082 | |
2083 | switch (ms->c_sclass) | |
2084 | { | |
c5aa993b | 2085 | case C_MOE: |
8c14c3a3 | 2086 | sym = new (&objfile->objfile_obstack) symbol; |
c5aa993b | 2087 | |
021887d8 | 2088 | name = obstack_strdup (&objfile->objfile_obstack, name); |
43678b0a | 2089 | sym->set_linkage_name (name); |
ba44b1a3 | 2090 | sym->set_aclass_index (LOC_CONST); |
6c9c307c | 2091 | sym->set_domain (VAR_DOMAIN); |
4aeddc50 | 2092 | sym->set_value_longest (ms->c_value); |
c5aa993b JM |
2093 | add_symbol_to_list (sym, symlist); |
2094 | nsyms++; | |
2095 | break; | |
c906108c | 2096 | |
c5aa993b JM |
2097 | case C_EOS: |
2098 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2099 | up the count of how many symbols to read. So stop | |
2100 | on .eos. */ | |
2101 | done = 1; | |
2102 | break; | |
c906108c SS |
2103 | } |
2104 | } | |
2105 | ||
2106 | /* Now fill in the fields of the type-structure. */ | |
2107 | ||
2108 | if (length > 0) | |
2109 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2110 | else /* Assume ints. */ |
5e2b427d | 2111 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
67607e24 | 2112 | type->set_code (TYPE_CODE_ENUM); |
5e33d5f4 | 2113 | type->set_num_fields (nsyms); |
3cabb6b0 SM |
2114 | type->set_fields |
2115 | ((struct field *) TYPE_ALLOC (type, sizeof (struct field) * nsyms)); | |
c906108c SS |
2116 | |
2117 | /* Find the symbols for the values and put them into the type. | |
2118 | The symbols can be found in the symlist that we put them on | |
2119 | to cause them to be defined. osyms contains the old value | |
2120 | of that symlist; everything up to there was defined by us. */ | |
2121 | /* Note that we preserve the order of the enum constants, so | |
2122 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2123 | FOO, not LAST_THING. */ | |
2124 | ||
2125 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2126 | { | |
2127 | int j = 0; | |
2128 | ||
2129 | if (syms == osyms) | |
2130 | j = o_nsyms; | |
c5aa993b | 2131 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2132 | { |
2133 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2134 | |
5f9c5a63 | 2135 | xsym->set_type (type); |
d3fd12df | 2136 | type->field (n).set_name (xsym->linkage_name ()); |
4aeddc50 SM |
2137 | type->field (n).set_loc_enumval (xsym->value_longest ()); |
2138 | if (xsym->value_longest () < 0) | |
c906108c SS |
2139 | unsigned_enum = 0; |
2140 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2141 | } | |
2142 | if (syms == osyms) | |
2143 | break; | |
2144 | } | |
2145 | ||
2146 | if (unsigned_enum) | |
653223d3 | 2147 | type->set_is_unsigned (true); |
c906108c SS |
2148 | |
2149 | return type; | |
2150 | } | |
2151 | ||
aff410f1 | 2152 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2153 | |
00b5771c | 2154 | static const struct sym_fns coff_sym_fns = |
c906108c | 2155 | { |
aff410f1 MS |
2156 | coff_new_init, /* sym_new_init: init anything gbl to |
2157 | entire symtab */ | |
2158 | coff_symfile_init, /* sym_init: read initial info, setup | |
2159 | for sym_read() */ | |
2160 | coff_symfile_read, /* sym_read: read a symbol file into | |
2161 | symtab */ | |
2162 | coff_symfile_finish, /* sym_finish: finished with file, | |
2163 | cleanup */ | |
2164 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2165 | internal form */ | |
2166 | default_symfile_segments, /* sym_segments: Get segment | |
2167 | information from a file */ | |
c295b2e5 | 2168 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2169 | |
2170 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2171 | section. */ | |
55aa24fb | 2172 | NULL, /* sym_probe_fns */ |
c906108c SS |
2173 | }; |
2174 | ||
6c265988 | 2175 | void _initialize_coffread (); |
c906108c | 2176 | void |
6c265988 | 2177 | _initialize_coffread () |
c906108c | 2178 | { |
c256e171 | 2179 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 | 2180 | |
f1e6e072 TT |
2181 | coff_register_index |
2182 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2183 | } |