Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
b6ba6518 KB |
2 | Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000 | |
c5aa993b | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "demangle.h" | |
28 | #include "breakpoint.h" | |
29 | ||
30 | #include "bfd.h" | |
31 | #include "obstack.h" | |
32 | ||
33 | #include "gdb_string.h" | |
34 | #include <ctype.h> | |
35 | ||
36 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
37 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
38 | ||
39 | #include "symfile.h" | |
40 | #include "objfiles.h" | |
41 | #include "buildsym.h" | |
42 | #include "gdb-stabs.h" | |
43 | #include "stabsread.h" | |
44 | #include "complaints.h" | |
45 | #include "target.h" | |
46 | ||
a14ed312 | 47 | extern void _initialize_coffread (void); |
392a587b | 48 | |
c5aa993b JM |
49 | struct coff_symfile_info |
50 | { | |
51 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
52 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
c906108c | 53 | |
c5aa993b JM |
54 | CORE_ADDR textaddr; /* Addr of .text section. */ |
55 | unsigned int textsize; /* Size of .text section. */ | |
56 | struct stab_section_list *stabsects; /* .stab sections. */ | |
57 | asection *stabstrsect; /* Section pointer for .stab section */ | |
58 | char *stabstrdata; | |
59 | }; | |
c906108c SS |
60 | |
61 | /* Translate an external name string into a user-visible name. */ | |
62 | #define EXTERNAL_NAME(string, abfd) \ | |
63 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
64 | ||
65 | /* To be an sdb debug type, type must have at least a basic or primary | |
66 | derived type. Using this rather than checking against T_NULL is | |
67 | said to prevent core dumps if we try to operate on Michael Bloom | |
68 | dbx-in-coff file. */ | |
69 | ||
70 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
71 | ||
c906108c SS |
72 | /* Core address of start and end of text of current source file. |
73 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
74 | ||
75 | static CORE_ADDR current_source_start_addr; | |
76 | static CORE_ADDR current_source_end_addr; | |
77 | ||
78 | /* The addresses of the symbol table stream and number of symbols | |
79 | of the object file we are reading (as copied into core). */ | |
80 | ||
81 | static bfd *nlist_bfd_global; | |
82 | static int nlist_nsyms_global; | |
83 | ||
c906108c SS |
84 | |
85 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ | |
86 | ||
87 | static char *temp_sym; | |
88 | static char *temp_aux; | |
89 | ||
90 | /* Local variables that hold the shift and mask values for the | |
91 | COFF file that we are currently reading. These come back to us | |
92 | from BFD, and are referenced by their macro names, as well as | |
93 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
94 | macros from include/coff/internal.h . */ | |
95 | ||
c5aa993b JM |
96 | static unsigned local_n_btmask; |
97 | static unsigned local_n_btshft; | |
98 | static unsigned local_n_tmask; | |
99 | static unsigned local_n_tshift; | |
c906108c SS |
100 | |
101 | #define N_BTMASK local_n_btmask | |
102 | #define N_BTSHFT local_n_btshft | |
103 | #define N_TMASK local_n_tmask | |
104 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 105 | |
c906108c SS |
106 | /* Local variables that hold the sizes in the file of various COFF structures. |
107 | (We only need to know this to read them from the file -- BFD will then | |
108 | translate the data in them, into `internal_xxx' structs in the right | |
109 | byte order, alignment, etc.) */ | |
110 | ||
c5aa993b JM |
111 | static unsigned local_linesz; |
112 | static unsigned local_symesz; | |
113 | static unsigned local_auxesz; | |
c906108c SS |
114 | |
115 | /* This is set if this is a PE format file. */ | |
116 | ||
117 | static int pe_file; | |
118 | ||
119 | /* Chain of typedefs of pointers to empty struct/union types. | |
120 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
121 | ||
122 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
123 | ||
124 | /* Complaints about various problems in the file being read */ | |
125 | ||
c5aa993b JM |
126 | struct complaint ef_complaint = |
127 | {"Unmatched .ef symbol(s) ignored starting at symnum %d", 0, 0}; | |
c906108c | 128 | |
c5aa993b JM |
129 | struct complaint ef_stack_complaint = |
130 | {"`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d", 0, 0}; | |
c906108c | 131 | |
c5aa993b JM |
132 | struct complaint eb_stack_complaint = |
133 | {"`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d", 0, 0}; | |
c906108c SS |
134 | |
135 | struct complaint bf_no_aux_complaint = | |
c5aa993b | 136 | {"`.bf' symbol %d has no aux entry", 0, 0}; |
c906108c SS |
137 | |
138 | struct complaint ef_no_aux_complaint = | |
c5aa993b | 139 | {"`.ef' symbol %d has no aux entry", 0, 0}; |
c906108c SS |
140 | |
141 | struct complaint lineno_complaint = | |
c5aa993b | 142 | {"Line number pointer %d lower than start of line numbers", 0, 0}; |
c906108c SS |
143 | |
144 | struct complaint unexpected_type_complaint = | |
c5aa993b | 145 | {"Unexpected type for symbol %s", 0, 0}; |
c906108c SS |
146 | |
147 | struct complaint bad_sclass_complaint = | |
c5aa993b | 148 | {"Bad n_sclass for symbol %s", 0, 0}; |
c906108c SS |
149 | |
150 | struct complaint misordered_blocks_complaint = | |
c5aa993b | 151 | {"Blocks out of order at address %x", 0, 0}; |
c906108c SS |
152 | |
153 | struct complaint tagndx_bad_complaint = | |
c5aa993b | 154 | {"Symbol table entry for %s has bad tagndx value", 0, 0}; |
c906108c | 155 | |
c5aa993b JM |
156 | struct complaint eb_complaint = |
157 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
c906108c SS |
158 | |
159 | /* Simplified internal version of coff symbol table information */ | |
160 | ||
c5aa993b JM |
161 | struct coff_symbol |
162 | { | |
163 | char *c_name; | |
164 | int c_symnum; /* symbol number of this entry */ | |
165 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
166 | long c_value; | |
167 | int c_sclass; | |
168 | int c_secnum; | |
169 | unsigned int c_type; | |
170 | }; | |
c906108c | 171 | |
a14ed312 | 172 | extern void stabsread_clear_cache (void); |
7be570e7 | 173 | |
a14ed312 | 174 | static struct type *coff_read_struct_type (int, int, int); |
c906108c | 175 | |
a14ed312 KB |
176 | static struct type *decode_base_type (struct coff_symbol *, |
177 | unsigned int, union internal_auxent *); | |
c906108c | 178 | |
a14ed312 KB |
179 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
180 | union internal_auxent *); | |
c906108c | 181 | |
a14ed312 KB |
182 | static struct type *decode_function_type (struct coff_symbol *, |
183 | unsigned int, | |
184 | union internal_auxent *); | |
c906108c | 185 | |
a14ed312 | 186 | static struct type *coff_read_enum_type (int, int, int); |
c906108c | 187 | |
a14ed312 KB |
188 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
189 | union internal_auxent *, | |
190 | struct objfile *); | |
c906108c | 191 | |
a14ed312 | 192 | static void patch_opaque_types (struct symtab *); |
c906108c | 193 | |
a14ed312 | 194 | static void patch_type (struct type *, struct type *); |
c906108c | 195 | |
a14ed312 | 196 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 197 | |
a14ed312 | 198 | static void free_linetab (void); |
c906108c | 199 | |
74b7792f AC |
200 | static void free_linetab_cleanup (void *ignore); |
201 | ||
a14ed312 | 202 | static int init_lineno (bfd *, long, int); |
c906108c | 203 | |
a14ed312 | 204 | static char *getsymname (struct internal_syment *); |
c906108c | 205 | |
a14ed312 | 206 | static char *coff_getfilename (union internal_auxent *); |
c906108c | 207 | |
a14ed312 | 208 | static void free_stringtab (void); |
c906108c | 209 | |
74b7792f AC |
210 | static void free_stringtab_cleanup (void *ignore); |
211 | ||
a14ed312 | 212 | static int init_stringtab (bfd *, long); |
c906108c | 213 | |
a14ed312 KB |
214 | static void read_one_sym (struct coff_symbol *, |
215 | struct internal_syment *, union internal_auxent *); | |
c906108c | 216 | |
a14ed312 | 217 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c | 218 | |
a14ed312 | 219 | static void find_linenos (bfd *, sec_ptr, PTR); |
c906108c | 220 | |
a14ed312 | 221 | static void coff_symfile_init (struct objfile *); |
c906108c | 222 | |
a14ed312 | 223 | static void coff_new_init (struct objfile *); |
c906108c | 224 | |
a14ed312 | 225 | static void coff_symfile_read (struct objfile *, int); |
c906108c | 226 | |
a14ed312 | 227 | static void coff_symfile_finish (struct objfile *); |
c906108c | 228 | |
a14ed312 KB |
229 | static void record_minimal_symbol (char *, CORE_ADDR, |
230 | enum minimal_symbol_type, | |
231 | struct objfile *); | |
c906108c | 232 | |
a14ed312 | 233 | static void coff_end_symtab (struct objfile *); |
c906108c | 234 | |
a14ed312 | 235 | static void complete_symtab (char *, CORE_ADDR, unsigned int); |
c906108c | 236 | |
a14ed312 | 237 | static void coff_start_symtab (char *); |
c906108c | 238 | |
a14ed312 | 239 | static struct type *coff_alloc_type (int); |
c906108c | 240 | |
a14ed312 | 241 | static struct type **coff_lookup_type (int); |
c906108c | 242 | |
a14ed312 | 243 | static void coff_locate_sections (bfd *, asection *, PTR); |
c906108c SS |
244 | \f |
245 | /* We are called once per section from coff_symfile_read. We | |
246 | need to examine each section we are passed, check to see | |
247 | if it is something we are interested in processing, and | |
248 | if so, stash away some access information for the section. | |
249 | ||
250 | FIXME: The section names should not be hardwired strings (what | |
251 | should they be? I don't think most object file formats have enough | |
252 | section flags to specify what kind of debug section it is | |
253 | -kingdon). */ | |
254 | ||
255 | static void | |
fba45db2 | 256 | coff_locate_sections (bfd *abfd, asection *sectp, PTR csip) |
c906108c SS |
257 | { |
258 | register struct coff_symfile_info *csi; | |
259 | const char *name; | |
260 | ||
261 | csi = (struct coff_symfile_info *) csip; | |
262 | name = bfd_get_section_name (abfd, sectp); | |
263 | if (STREQ (name, ".text")) | |
264 | { | |
265 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
266 | csi->textsize += bfd_section_size (abfd, sectp); | |
267 | } | |
268 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
269 | { | |
270 | csi->textsize += bfd_section_size (abfd, sectp); | |
271 | } | |
272 | else if (STREQ (name, ".stabstr")) | |
273 | { | |
274 | csi->stabstrsect = sectp; | |
275 | } | |
276 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
277 | { | |
278 | const char *s; | |
279 | ||
280 | /* We can have multiple .stab sections if linked with | |
281 | --split-by-reloc. */ | |
282 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 283 | if (!isdigit (*s)) |
c906108c SS |
284 | break; |
285 | if (*s == '\0') | |
286 | { | |
287 | struct stab_section_list *n, **pn; | |
288 | ||
289 | n = ((struct stab_section_list *) | |
290 | xmalloc (sizeof (struct stab_section_list))); | |
291 | n->section = sectp; | |
292 | n->next = NULL; | |
293 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
294 | ; | |
295 | *pn = n; | |
296 | ||
297 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
298 | in coff_symfile_read, at which point we no longer need |
299 | the information. */ | |
b8c9b27d | 300 | make_cleanup (xfree, n); |
c906108c SS |
301 | } |
302 | } | |
303 | } | |
304 | ||
305 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 306 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 307 | |
c5aa993b JM |
308 | struct find_targ_sec_arg |
309 | { | |
310 | int targ_index; | |
311 | asection **resultp; | |
312 | }; | |
c906108c | 313 | |
a14ed312 | 314 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 315 | |
c5aa993b | 316 | static void |
fba45db2 | 317 | find_targ_sec (bfd *abfd, asection *sect, PTR obj) |
c906108c | 318 | { |
c5aa993b | 319 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c906108c SS |
320 | if (sect->target_index == args->targ_index) |
321 | *args->resultp = sect; | |
322 | } | |
323 | ||
324 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
325 | static int | |
fba45db2 | 326 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
327 | { |
328 | asection *sect = NULL; | |
329 | struct find_targ_sec_arg args; | |
b8fbeb18 | 330 | int off = SECT_OFF_TEXT (objfile); |
c906108c SS |
331 | |
332 | args.targ_index = cs->c_secnum; | |
333 | args.resultp = § | |
334 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
335 | if (sect != NULL) | |
336 | { | |
337 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
338 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 339 | off = SECT_OFF_TEXT (objfile); |
c906108c | 340 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 341 | off = SECT_OFF_DATA (objfile); |
c906108c | 342 | else |
a4c8257b EZ |
343 | /* Just return the bfd section index. */ |
344 | off = sect->index; | |
c906108c SS |
345 | } |
346 | return off; | |
347 | } | |
348 | ||
349 | /* Return the address of the section of a COFF symbol. */ | |
350 | ||
a14ed312 | 351 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
352 | |
353 | static CORE_ADDR | |
fba45db2 | 354 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
355 | { |
356 | asection *sect = NULL; | |
357 | struct find_targ_sec_arg args; | |
358 | CORE_ADDR addr = 0; | |
359 | ||
360 | args.targ_index = cs->c_secnum; | |
361 | args.resultp = § | |
362 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
363 | if (sect != NULL) | |
364 | addr = bfd_get_section_vma (objfile->obfd, sect); | |
365 | return addr; | |
366 | } | |
367 | ||
368 | /* Look up a coff type-number index. Return the address of the slot | |
369 | where the type for that index is stored. | |
370 | The type-number is in INDEX. | |
371 | ||
372 | This can be used for finding the type associated with that index | |
373 | or for associating a new type with the index. */ | |
374 | ||
375 | static struct type ** | |
fba45db2 | 376 | coff_lookup_type (register int index) |
c906108c SS |
377 | { |
378 | if (index >= type_vector_length) | |
379 | { | |
380 | int old_vector_length = type_vector_length; | |
381 | ||
382 | type_vector_length *= 2; | |
c5aa993b | 383 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
384 | type_vector_length = index * 2; |
385 | ||
386 | type_vector = (struct type **) | |
387 | xrealloc ((char *) type_vector, | |
388 | type_vector_length * sizeof (struct type *)); | |
389 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 390 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
391 | } |
392 | return &type_vector[index]; | |
393 | } | |
394 | ||
395 | /* Make sure there is a type allocated for type number index | |
396 | and return the type object. | |
397 | This can create an empty (zeroed) type object. */ | |
398 | ||
399 | static struct type * | |
fba45db2 | 400 | coff_alloc_type (int index) |
c906108c SS |
401 | { |
402 | register struct type **type_addr = coff_lookup_type (index); | |
403 | register struct type *type = *type_addr; | |
404 | ||
405 | /* If we are referring to a type not known at all yet, | |
406 | allocate an empty type for it. | |
407 | We will fill it in later if we find out how. */ | |
408 | if (type == NULL) | |
409 | { | |
410 | type = alloc_type (current_objfile); | |
411 | *type_addr = type; | |
412 | } | |
413 | return type; | |
414 | } | |
415 | \f | |
c906108c SS |
416 | /* Start a new symtab for a new source file. |
417 | This is called when a COFF ".file" symbol is seen; | |
418 | it indicates the start of data for one original source file. */ | |
419 | ||
420 | static void | |
fba45db2 | 421 | coff_start_symtab (char *name) |
c906108c SS |
422 | { |
423 | start_symtab ( | |
c5aa993b JM |
424 | /* We fill in the filename later. start_symtab puts |
425 | this pointer into last_source_file and we put it in | |
426 | subfiles->name, which end_symtab frees; that's why | |
427 | it must be malloc'd. */ | |
428 | savestring (name, strlen (name)), | |
429 | /* We never know the directory name for COFF. */ | |
430 | NULL, | |
431 | /* The start address is irrelevant, since we set | |
432 | last_source_start_addr in coff_end_symtab. */ | |
433 | 0); | |
c906108c | 434 | record_debugformat ("COFF"); |
c906108c SS |
435 | } |
436 | ||
437 | /* Save the vital information from when starting to read a file, | |
438 | for use when closing off the current file. | |
439 | NAME is the file name the symbols came from, START_ADDR is the first | |
440 | text address for the file, and SIZE is the number of bytes of text. */ | |
441 | ||
442 | static void | |
fba45db2 | 443 | complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c SS |
444 | { |
445 | if (last_source_file != NULL) | |
b8c9b27d | 446 | xfree (last_source_file); |
c906108c SS |
447 | last_source_file = savestring (name, strlen (name)); |
448 | current_source_start_addr = start_addr; | |
449 | current_source_end_addr = start_addr + size; | |
450 | ||
c5aa993b JM |
451 | if (current_objfile->ei.entry_point >= current_source_start_addr && |
452 | current_objfile->ei.entry_point < current_source_end_addr) | |
c906108c | 453 | { |
c5aa993b JM |
454 | current_objfile->ei.entry_file_lowpc = current_source_start_addr; |
455 | current_objfile->ei.entry_file_highpc = current_source_end_addr; | |
c906108c SS |
456 | } |
457 | } | |
458 | ||
459 | /* Finish the symbol definitions for one main source file, | |
460 | close off all the lexical contexts for that file | |
461 | (creating struct block's for them), then make the | |
462 | struct symtab for that file and put it in the list of all such. */ | |
463 | ||
464 | static void | |
fba45db2 | 465 | coff_end_symtab (struct objfile *objfile) |
c906108c SS |
466 | { |
467 | struct symtab *symtab; | |
468 | ||
469 | last_source_start_addr = current_source_start_addr; | |
470 | ||
44c75fb3 | 471 | symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
472 | |
473 | if (symtab != NULL) | |
474 | free_named_symtabs (symtab->filename); | |
475 | ||
476 | /* Reinitialize for beginning of new file. */ | |
c906108c SS |
477 | last_source_file = NULL; |
478 | } | |
479 | \f | |
480 | static void | |
fba45db2 KB |
481 | record_minimal_symbol (char *name, CORE_ADDR address, |
482 | enum minimal_symbol_type type, struct objfile *objfile) | |
c906108c SS |
483 | { |
484 | /* We don't want TDESC entry points in the minimal symbol table */ | |
c5aa993b JM |
485 | if (name[0] == '@') |
486 | return; | |
c906108c SS |
487 | |
488 | prim_record_minimal_symbol (name, address, type, objfile); | |
489 | } | |
490 | \f | |
491 | /* coff_symfile_init () | |
492 | is the coff-specific initialization routine for reading symbols. | |
493 | It is passed a struct objfile which contains, among other things, | |
494 | the BFD for the file whose symbols are being read, and a slot for | |
495 | a pointer to "private data" which we fill with cookies and other | |
496 | treats for coff_symfile_read (). | |
497 | ||
498 | We will only be called if this is a COFF or COFF-like file. | |
499 | BFD handles figuring out the format of the file, and code in symtab.c | |
500 | uses BFD's determination to vector to us. | |
501 | ||
502 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
503 | ||
504 | static void | |
fba45db2 | 505 | coff_symfile_init (struct objfile *objfile) |
c906108c SS |
506 | { |
507 | /* Allocate struct to keep track of stab reading. */ | |
508 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
509 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); | |
510 | ||
511 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); | |
512 | ||
513 | /* Allocate struct to keep track of the symfile */ | |
514 | objfile->sym_private = xmmalloc (objfile->md, | |
515 | sizeof (struct coff_symfile_info)); | |
516 | ||
517 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); | |
518 | ||
519 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
520 | find this causes a significant slowdown in gdb then we could | |
521 | set it in the debug symbol readers only when necessary. */ | |
522 | objfile->flags |= OBJF_REORDERED; | |
523 | ||
524 | init_entry_point_info (objfile); | |
525 | } | |
526 | ||
527 | /* This function is called for every section; it finds the outer limits | |
528 | of the line table (minimum and maximum file offset) so that the | |
529 | mainline code can read the whole thing for efficiency. */ | |
530 | ||
531 | /* ARGSUSED */ | |
532 | static void | |
fba45db2 | 533 | find_linenos (bfd *abfd, sec_ptr asect, PTR vpinfo) |
c906108c SS |
534 | { |
535 | struct coff_symfile_info *info; | |
536 | int size, count; | |
537 | file_ptr offset, maxoff; | |
538 | ||
539 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
540 | count = asect->lineno_count; | |
541 | /* End of warning */ | |
542 | ||
543 | if (count == 0) | |
544 | return; | |
545 | size = count * local_linesz; | |
546 | ||
c5aa993b | 547 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
548 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
549 | offset = asect->line_filepos; | |
550 | /* End of warning */ | |
551 | ||
552 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
553 | info->min_lineno_offset = offset; | |
554 | ||
555 | maxoff = offset + size; | |
556 | if (maxoff > info->max_lineno_offset) | |
557 | info->max_lineno_offset = maxoff; | |
558 | } | |
559 | ||
560 | ||
561 | /* The BFD for this file -- only good while we're actively reading | |
562 | symbols into a psymtab or a symtab. */ | |
563 | ||
564 | static bfd *symfile_bfd; | |
565 | ||
566 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
567 | ||
568 | /* ARGSUSED */ | |
569 | static void | |
fba45db2 | 570 | coff_symfile_read (struct objfile *objfile, int mainline) |
c906108c SS |
571 | { |
572 | struct coff_symfile_info *info; | |
573 | struct dbx_symfile_info *dbxinfo; | |
574 | bfd *abfd = objfile->obfd; | |
575 | coff_data_type *cdata = coff_data (abfd); | |
576 | char *name = bfd_get_filename (abfd); | |
577 | register int val; | |
745b8ca0 | 578 | unsigned int num_symbols; |
c906108c SS |
579 | int symtab_offset; |
580 | int stringtab_offset; | |
581 | struct cleanup *back_to; | |
582 | int stabstrsize; | |
c2d11a7d JM |
583 | int len; |
584 | char * target; | |
585 | ||
c5aa993b | 586 | info = (struct coff_symfile_info *) objfile->sym_private; |
c906108c | 587 | dbxinfo = objfile->sym_stab_info; |
c5aa993b | 588 | symfile_bfd = abfd; /* Kludge for swap routines */ |
c906108c SS |
589 | |
590 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
591 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
592 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
593 | stringtab_offset = symtab_offset + /* String table file offset */ | |
594 | num_symbols * cdata->local_symesz; | |
c906108c SS |
595 | |
596 | /* Set a few file-statics that give us specific information about | |
597 | the particular COFF file format we're reading. */ | |
c906108c SS |
598 | local_n_btmask = cdata->local_n_btmask; |
599 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 600 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 601 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
602 | local_linesz = cdata->local_linesz; |
603 | local_symesz = cdata->local_symesz; | |
604 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
605 | |
606 | /* Allocate space for raw symbol and aux entries, based on their | |
607 | space requirements as reported by BFD. */ | |
608 | temp_sym = (char *) xmalloc | |
c5aa993b | 609 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 610 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 611 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
612 | |
613 | /* We need to know whether this is a PE file, because in PE files, | |
614 | unlike standard COFF files, symbol values are stored as offsets | |
615 | from the section address, rather than as absolute addresses. | |
616 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
617 | this problem. */ | |
0d06e24b JM |
618 | pe_file = |
619 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
620 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c SS |
621 | |
622 | /* End of warning */ | |
623 | ||
624 | /* Read the line number table, all at once. */ | |
625 | info->min_lineno_offset = 0; | |
626 | info->max_lineno_offset = 0; | |
627 | bfd_map_over_sections (abfd, find_linenos, (PTR) info); | |
628 | ||
74b7792f | 629 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); |
c5aa993b | 630 | val = init_lineno (abfd, info->min_lineno_offset, |
c906108c SS |
631 | info->max_lineno_offset - info->min_lineno_offset); |
632 | if (val < 0) | |
633 | error ("\"%s\": error reading line numbers\n", name); | |
634 | ||
635 | /* Now read the string table, all at once. */ | |
636 | ||
74b7792f | 637 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
638 | val = init_stringtab (abfd, stringtab_offset); |
639 | if (val < 0) | |
640 | error ("\"%s\": can't get string table", name); | |
641 | ||
642 | init_minimal_symbol_collection (); | |
56e290f4 | 643 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
644 | |
645 | /* Now that the executable file is positioned at symbol table, | |
646 | process it and define symbols accordingly. */ | |
647 | ||
96baa820 | 648 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c SS |
649 | |
650 | /* Sort symbols alphabetically within each block. */ | |
651 | ||
652 | { | |
653 | struct symtab *s; | |
654 | ||
c5aa993b | 655 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c SS |
656 | sort_symtab_syms (s); |
657 | } | |
658 | ||
659 | /* Install any minimal symbols that have been collected as the current | |
660 | minimal symbols for this objfile. */ | |
661 | ||
662 | install_minimal_symbols (objfile); | |
663 | ||
664 | bfd_map_over_sections (abfd, coff_locate_sections, (PTR) info); | |
665 | ||
666 | if (info->stabsects) | |
667 | { | |
c5aa993b | 668 | if (!info->stabstrsect) |
b83266a0 SS |
669 | { |
670 | error_begin (); | |
671 | fprintf_filtered | |
672 | (gdb_stderr, | |
673 | ("The debugging information in `%s' is corrupted.\n" | |
c5aa993b | 674 | "The file has a `.stabs' section, but no `.stabstr' section.\n"), |
b83266a0 SS |
675 | name); |
676 | return_to_top_level (RETURN_ERROR); | |
677 | } | |
678 | ||
c906108c | 679 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 680 | bfd_get_section_contents? */ |
c906108c SS |
681 | bfd_seek (abfd, abfd->where, 0); |
682 | ||
683 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
684 | ||
685 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
686 | mainline, |
687 | info->textaddr, info->textsize, | |
688 | info->stabsects, | |
689 | info->stabstrsect->filepos, stabstrsize); | |
690 | } | |
691 | ||
692 | do_cleanups (back_to); | |
693 | } | |
694 | ||
695 | static void | |
fba45db2 | 696 | coff_new_init (struct objfile *ignore) |
c906108c SS |
697 | { |
698 | } | |
699 | ||
700 | /* Perform any local cleanups required when we are done with a particular | |
701 | objfile. I.E, we are in the process of discarding all symbol information | |
702 | for an objfile, freeing up all memory held for it, and unlinking the | |
703 | objfile struct from the global list of known objfiles. */ | |
704 | ||
705 | static void | |
fba45db2 | 706 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 707 | { |
c5aa993b | 708 | if (objfile->sym_private != NULL) |
c906108c | 709 | { |
c5aa993b | 710 | mfree (objfile->md, objfile->sym_private); |
c906108c | 711 | } |
7be570e7 JM |
712 | |
713 | /* Let stabs reader clean up */ | |
714 | stabsread_clear_cache (); | |
c906108c | 715 | } |
c906108c | 716 | \f |
c5aa993b | 717 | |
c906108c SS |
718 | /* Given pointers to a symbol table in coff style exec file, |
719 | analyze them and create struct symtab's describing the symbols. | |
720 | NSYMS is the number of symbols in the symbol table. | |
721 | We read them one at a time using read_one_sym (). */ | |
722 | ||
723 | static void | |
fba45db2 KB |
724 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
725 | struct objfile *objfile) | |
c906108c SS |
726 | { |
727 | register struct context_stack *new; | |
728 | struct coff_symbol coff_symbol; | |
729 | register struct coff_symbol *cs = &coff_symbol; | |
730 | static struct internal_syment main_sym; | |
731 | static union internal_auxent main_aux; | |
732 | struct coff_symbol fcn_cs_saved; | |
733 | static struct internal_syment fcn_sym_saved; | |
734 | static union internal_auxent fcn_aux_saved; | |
735 | struct symtab *s; | |
736 | /* A .file is open. */ | |
737 | int in_source_file = 0; | |
738 | int next_file_symnum = -1; | |
739 | /* Name of the current file. */ | |
740 | char *filestring = ""; | |
741 | int depth = 0; | |
742 | int fcn_first_line = 0; | |
cd0fc7c3 | 743 | CORE_ADDR fcn_first_line_addr; |
c906108c SS |
744 | int fcn_last_line = 0; |
745 | int fcn_start_addr = 0; | |
746 | long fcn_line_ptr = 0; | |
747 | int val; | |
748 | CORE_ADDR tmpaddr; | |
749 | ||
750 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
751 | it's hard to know I've really worked around it. The fix should be | |
752 | harmless, anyway). The symptom of the bug is that the first | |
753 | fread (in read_one_sym), will (in my example) actually get data | |
754 | from file offset 268, when the fseek was to 264 (and ftell shows | |
755 | 264). This causes all hell to break loose. I was unable to | |
756 | reproduce this on a short test program which operated on the same | |
757 | file, performing (I think) the same sequence of operations. | |
758 | ||
759 | It stopped happening when I put in this (former) rewind(). | |
760 | ||
761 | FIXME: Find out if this has been reported to Sun, whether it has | |
762 | been fixed in a later release, etc. */ | |
763 | ||
764 | bfd_seek (objfile->obfd, 0, 0); | |
765 | ||
766 | /* Position to read the symbol table. */ | |
767 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); | |
768 | if (val < 0) | |
769 | perror_with_name (objfile->name); | |
770 | ||
771 | current_objfile = objfile; | |
772 | nlist_bfd_global = objfile->obfd; | |
773 | nlist_nsyms_global = nsyms; | |
774 | last_source_file = NULL; | |
775 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); | |
776 | ||
c5aa993b | 777 | if (type_vector) /* Get rid of previous one */ |
b8c9b27d | 778 | xfree (type_vector); |
c906108c SS |
779 | type_vector_length = 160; |
780 | type_vector = (struct type **) | |
781 | xmalloc (type_vector_length * sizeof (struct type *)); | |
782 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
783 | ||
784 | coff_start_symtab (""); | |
785 | ||
786 | symnum = 0; | |
787 | while (symnum < nsyms) | |
788 | { | |
789 | QUIT; /* Make this command interruptable. */ | |
790 | ||
791 | read_one_sym (cs, &main_sym, &main_aux); | |
792 | ||
793 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
794 | { | |
795 | if (last_source_file) | |
796 | coff_end_symtab (objfile); | |
797 | ||
798 | coff_start_symtab ("_globals_"); | |
799 | complete_symtab ("_globals_", 0, 0); | |
800 | /* done with all files, everything from here on out is globals */ | |
801 | } | |
802 | ||
803 | /* Special case for file with type declarations only, no text. */ | |
804 | if (!last_source_file && SDB_TYPE (cs->c_type) | |
805 | && cs->c_secnum == N_DEBUG) | |
806 | complete_symtab (filestring, 0, 0); | |
807 | ||
808 | /* Typedefs should not be treated as symbol definitions. */ | |
809 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
810 | { | |
811 | /* Record all functions -- external and static -- in minsyms. */ | |
b8fbeb18 | 812 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
813 | record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile); |
814 | ||
815 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
816 | fcn_start_addr = tmpaddr; | |
817 | fcn_cs_saved = *cs; | |
818 | fcn_sym_saved = main_sym; | |
819 | fcn_aux_saved = main_aux; | |
820 | continue; | |
821 | } | |
822 | ||
823 | switch (cs->c_sclass) | |
824 | { | |
c5aa993b JM |
825 | case C_EFCN: |
826 | case C_EXTDEF: | |
827 | case C_ULABEL: | |
828 | case C_USTATIC: | |
829 | case C_LINE: | |
830 | case C_ALIAS: | |
831 | case C_HIDDEN: | |
832 | complain (&bad_sclass_complaint, cs->c_name); | |
833 | break; | |
c906108c | 834 | |
c5aa993b JM |
835 | case C_FILE: |
836 | /* c_value field contains symnum of next .file entry in table | |
837 | or symnum of first global after last .file. */ | |
838 | next_file_symnum = cs->c_value; | |
839 | if (cs->c_naux > 0) | |
840 | filestring = coff_getfilename (&main_aux); | |
841 | else | |
842 | filestring = ""; | |
843 | ||
844 | /* Complete symbol table for last object file | |
845 | containing debugging information. */ | |
846 | if (last_source_file) | |
847 | { | |
848 | coff_end_symtab (objfile); | |
849 | coff_start_symtab (filestring); | |
850 | } | |
851 | in_source_file = 1; | |
852 | break; | |
c906108c SS |
853 | |
854 | /* C_LABEL is used for labels and static functions. Including | |
855 | it here allows gdb to see static functions when no debug | |
856 | info is available. */ | |
c5aa993b JM |
857 | case C_LABEL: |
858 | /* However, labels within a function can make weird backtraces, | |
859 | so filter them out (from phdm@macqel.be). */ | |
860 | if (within_function) | |
861 | break; | |
862 | case C_STAT: | |
863 | case C_THUMBLABEL: | |
864 | case C_THUMBSTAT: | |
865 | case C_THUMBSTATFUNC: | |
866 | if (cs->c_name[0] == '.') | |
867 | { | |
868 | if (STREQ (cs->c_name, ".text")) | |
869 | { | |
c906108c SS |
870 | /* FIXME: don't wire in ".text" as section name |
871 | or symbol name! */ | |
872 | /* Check for in_source_file deals with case of | |
873 | a file with debugging symbols | |
874 | followed by a later file with no symbols. */ | |
875 | if (in_source_file) | |
876 | complete_symtab (filestring, | |
b8fbeb18 | 877 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c SS |
878 | main_aux.x_scn.x_scnlen); |
879 | in_source_file = 0; | |
880 | } | |
c5aa993b | 881 | /* flush rest of '.' symbols */ |
c906108c | 882 | break; |
c5aa993b JM |
883 | } |
884 | else if (!SDB_TYPE (cs->c_type) | |
885 | && cs->c_name[0] == 'L' | |
886 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
887 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
888 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
889 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
890 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
891 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
892 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
893 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
894 | /* At least on a 3b1, gcc generates swbeg and string labels | |
895 | that look like this. Ignore them. */ | |
896 | break; | |
897 | /* fall in for static symbols that don't start with '.' */ | |
898 | case C_THUMBEXT: | |
899 | case C_THUMBEXTFUNC: | |
900 | case C_EXT: | |
901 | { | |
902 | /* Record it in the minimal symbols regardless of | |
903 | SDB_TYPE. This parallels what we do for other debug | |
904 | formats, and probably is needed to make | |
905 | print_address_symbolic work right without the (now | |
906 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 907 | |
c5aa993b JM |
908 | /* FIXME: should use mst_abs, and not relocate, if absolute. */ |
909 | enum minimal_symbol_type ms_type; | |
910 | int sec; | |
c906108c | 911 | |
c5aa993b JM |
912 | if (cs->c_secnum == N_UNDEF) |
913 | { | |
914 | /* This is a common symbol. See if the target | |
915 | environment knows where it has been relocated to. */ | |
916 | CORE_ADDR reladdr; | |
917 | if (target_lookup_symbol (cs->c_name, &reladdr)) | |
918 | { | |
919 | /* Error in lookup; ignore symbol. */ | |
920 | break; | |
921 | } | |
922 | tmpaddr = reladdr; | |
923 | /* The address has already been relocated; make sure that | |
924 | objfile_relocate doesn't relocate it again. */ | |
925 | sec = -2; | |
926 | ms_type = cs->c_sclass == C_EXT | |
927 | || cs->c_sclass == C_THUMBEXT ? | |
928 | mst_bss : mst_file_bss; | |
929 | } | |
930 | else | |
931 | { | |
932 | sec = cs_to_section (cs, objfile); | |
933 | tmpaddr = cs->c_value; | |
934 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
935 | || cs->c_sclass == C_THUMBEXT) | |
96baa820 | 936 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 937 | |
2ec466f9 | 938 | if (sec == SECT_OFF_TEXT (objfile)) |
c5aa993b | 939 | { |
c5aa993b JM |
940 | ms_type = |
941 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
942 | || cs->c_sclass == C_THUMBEXT ? | |
943 | mst_text : mst_file_text; | |
c906108c | 944 | #ifdef SMASH_TEXT_ADDRESS |
c5aa993b JM |
945 | if (tmpaddr & 1) /* FIXME: delete this line */ |
946 | SMASH_TEXT_ADDRESS (tmpaddr); | |
c906108c | 947 | #endif |
b8fbeb18 | 948 | } |
34e924c0 EZ |
949 | else if (sec == SECT_OFF_DATA (objfile)) |
950 | { | |
c5aa993b JM |
951 | ms_type = |
952 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
953 | mst_data : mst_file_data; | |
34e924c0 EZ |
954 | } |
955 | else if (sec == SECT_OFF_BSS (objfile)) | |
956 | { | |
c5aa993b JM |
957 | ms_type = |
958 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
959 | mst_data : mst_file_data; | |
34e924c0 EZ |
960 | } |
961 | else | |
962 | ms_type = mst_unknown; | |
c5aa993b | 963 | } |
c906108c | 964 | |
c5aa993b JM |
965 | if (cs->c_name[0] != '@' /* Skip tdesc symbols */ ) |
966 | { | |
967 | struct minimal_symbol *msym; | |
c906108c | 968 | |
c5aa993b JM |
969 | msym = prim_record_minimal_symbol_and_info |
970 | (cs->c_name, tmpaddr, ms_type, (char *) cs->c_sclass, sec, | |
c906108c SS |
971 | NULL, objfile); |
972 | #ifdef COFF_MAKE_MSYMBOL_SPECIAL | |
c5aa993b JM |
973 | if (msym) |
974 | COFF_MAKE_MSYMBOL_SPECIAL (cs->c_sclass, msym); | |
c906108c | 975 | #endif |
c5aa993b JM |
976 | } |
977 | if (SDB_TYPE (cs->c_type)) | |
978 | { | |
979 | struct symbol *sym; | |
980 | sym = process_coff_symbol | |
96baa820 | 981 | (cs, &main_aux, objfile); |
c5aa993b JM |
982 | SYMBOL_VALUE (sym) = tmpaddr; |
983 | SYMBOL_SECTION (sym) = sec; | |
984 | } | |
985 | } | |
986 | break; | |
987 | ||
988 | case C_FCN: | |
989 | if (STREQ (cs->c_name, ".bf")) | |
990 | { | |
991 | within_function = 1; | |
992 | ||
993 | /* value contains address of first non-init type code */ | |
994 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
995 | contains line number of '{' } */ | |
996 | if (cs->c_naux != 1) | |
997 | complain (&bf_no_aux_complaint, cs->c_symnum); | |
998 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
999 | fcn_first_line_addr = cs->c_value; | |
1000 | ||
1001 | /* Might want to check that locals are 0 and | |
1002 | context_stack_depth is zero, and complain if not. */ | |
1003 | ||
1004 | depth = 0; | |
1005 | new = push_context (depth, fcn_start_addr); | |
1006 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
1007 | new->name = | |
96baa820 | 1008 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); |
c5aa993b JM |
1009 | } |
1010 | else if (STREQ (cs->c_name, ".ef")) | |
1011 | { | |
1012 | /* the value of .ef is the address of epilogue code; | |
1013 | not useful for gdb. */ | |
1014 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1015 | contains number of lines to '}' */ | |
1016 | ||
1017 | if (context_stack_depth <= 0) | |
1018 | { /* We attempted to pop an empty context stack */ | |
1019 | complain (&ef_stack_complaint, cs->c_symnum); | |
1020 | within_function = 0; | |
1021 | break; | |
c906108c | 1022 | } |
c5aa993b JM |
1023 | |
1024 | new = pop_context (); | |
1025 | /* Stack must be empty now. */ | |
1026 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 1027 | { |
c5aa993b JM |
1028 | complain (&ef_complaint, cs->c_symnum); |
1029 | within_function = 0; | |
1030 | break; | |
c906108c | 1031 | } |
c5aa993b JM |
1032 | if (cs->c_naux != 1) |
1033 | { | |
1034 | complain (&ef_no_aux_complaint, cs->c_symnum); | |
1035 | fcn_last_line = 0x7FFFFFFF; | |
1036 | } | |
1037 | else | |
1038 | { | |
1039 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1040 | } | |
1041 | /* fcn_first_line is the line number of the opening '{'. | |
1042 | Do not record it - because it would affect gdb's idea | |
1043 | of the line number of the first statement of the function - | |
1044 | except for one-line functions, for which it is also the line | |
1045 | number of all the statements and of the closing '}', and | |
1046 | for which we do not have any other statement-line-number. */ | |
1047 | if (fcn_last_line == 1) | |
1048 | record_line (current_subfile, fcn_first_line, | |
1049 | fcn_first_line_addr); | |
1050 | else | |
1051 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, | |
d4f3574e | 1052 | objfile); |
c906108c | 1053 | |
c5aa993b JM |
1054 | finish_block (new->name, &local_symbols, new->old_blocks, |
1055 | new->start_addr, | |
c906108c | 1056 | #if defined (FUNCTION_EPILOGUE_SIZE) |
c5aa993b JM |
1057 | /* This macro should be defined only on |
1058 | machines where the | |
1059 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1060 | field is always zero. | |
1061 | So use the .bf record information that | |
1062 | points to the epilogue and add the size | |
1063 | of the epilogue. */ | |
1064 | cs->c_value | |
1065 | + FUNCTION_EPILOGUE_SIZE | |
b8fbeb18 | 1066 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1067 | #else |
c5aa993b JM |
1068 | fcn_cs_saved.c_value |
1069 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b8fbeb18 | 1070 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1071 | #endif |
c5aa993b JM |
1072 | objfile |
1073 | ); | |
1074 | within_function = 0; | |
1075 | } | |
1076 | break; | |
c906108c | 1077 | |
c5aa993b JM |
1078 | case C_BLOCK: |
1079 | if (STREQ (cs->c_name, ".bb")) | |
1080 | { | |
1081 | tmpaddr = cs->c_value; | |
b8fbeb18 | 1082 | tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1083 | push_context (++depth, tmpaddr); |
1084 | } | |
1085 | else if (STREQ (cs->c_name, ".eb")) | |
1086 | { | |
1087 | if (context_stack_depth <= 0) | |
1088 | { /* We attempted to pop an empty context stack */ | |
1089 | complain (&eb_stack_complaint, cs->c_symnum); | |
1090 | break; | |
1091 | } | |
c906108c | 1092 | |
c5aa993b JM |
1093 | new = pop_context (); |
1094 | if (depth-- != new->depth) | |
1095 | { | |
1096 | complain (&eb_complaint, symnum); | |
1097 | break; | |
1098 | } | |
1099 | if (local_symbols && context_stack_depth > 0) | |
1100 | { | |
1101 | tmpaddr = | |
b8fbeb18 | 1102 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1103 | /* Make a block for the local symbols within. */ |
1104 | finish_block (0, &local_symbols, new->old_blocks, | |
1105 | new->start_addr, tmpaddr, objfile); | |
1106 | } | |
1107 | /* Now pop locals of block just finished. */ | |
1108 | local_symbols = new->locals; | |
1109 | } | |
1110 | break; | |
c906108c | 1111 | |
c5aa993b | 1112 | default: |
96baa820 | 1113 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1114 | break; |
c906108c SS |
1115 | } |
1116 | } | |
1117 | ||
1118 | if (last_source_file) | |
1119 | coff_end_symtab (objfile); | |
1120 | ||
1121 | /* Patch up any opaque types (references to types that are not defined | |
1122 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1123 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1124 | patch_opaque_types (s); | |
1125 | ||
1126 | current_objfile = NULL; | |
1127 | } | |
1128 | \f | |
1129 | /* Routines for reading headers and symbols from executable. */ | |
1130 | ||
1131 | /* Read the next symbol, swap it, and return it in both internal_syment | |
1132 | form, and coff_symbol form. Also return its first auxent, if any, | |
1133 | in internal_auxent form, and skip any other auxents. */ | |
1134 | ||
1135 | static void | |
fba45db2 KB |
1136 | read_one_sym (register struct coff_symbol *cs, |
1137 | register struct internal_syment *sym, | |
1138 | register union internal_auxent *aux) | |
c906108c SS |
1139 | { |
1140 | int i; | |
1141 | ||
1142 | cs->c_symnum = symnum; | |
1143 | bfd_read (temp_sym, local_symesz, 1, nlist_bfd_global); | |
c5aa993b | 1144 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1145 | cs->c_naux = sym->n_numaux & 0xff; |
1146 | if (cs->c_naux >= 1) | |
1147 | { | |
c906108c | 1148 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); |
c5aa993b JM |
1149 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
1150 | 0, cs->c_naux, (char *) aux); | |
1151 | /* If more than one aux entry, read past it (only the first aux | |
1152 | is important). */ | |
1153 | for (i = 1; i < cs->c_naux; i++) | |
1154 | bfd_read (temp_aux, local_auxesz, 1, nlist_bfd_global); | |
c906108c SS |
1155 | } |
1156 | cs->c_name = getsymname (sym); | |
1157 | cs->c_value = sym->n_value; | |
1158 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1159 | cs->c_secnum = sym->n_scnum; | |
1160 | cs->c_type = (unsigned) sym->n_type; | |
1161 | if (!SDB_TYPE (cs->c_type)) | |
1162 | cs->c_type = 0; | |
1163 | ||
1164 | #if 0 | |
1165 | if (cs->c_sclass & 128) | |
c5aa993b | 1166 | printf ("thumb symbol %s, class 0x%x\n", cs->c_name, cs->c_sclass); |
c906108c SS |
1167 | #endif |
1168 | ||
1169 | symnum += 1 + cs->c_naux; | |
1170 | ||
1171 | /* The PE file format stores symbol values as offsets within the | |
1172 | section, rather than as absolute addresses. We correct that | |
1173 | here, if the symbol has an appropriate storage class. FIXME: We | |
1174 | should use BFD to read the symbols, rather than duplicating the | |
1175 | work here. */ | |
1176 | if (pe_file) | |
1177 | { | |
1178 | switch (cs->c_sclass) | |
1179 | { | |
1180 | case C_EXT: | |
1181 | case C_THUMBEXT: | |
1182 | case C_THUMBEXTFUNC: | |
1183 | case C_SECTION: | |
1184 | case C_NT_WEAK: | |
1185 | case C_STAT: | |
1186 | case C_THUMBSTAT: | |
1187 | case C_THUMBSTATFUNC: | |
1188 | case C_LABEL: | |
1189 | case C_THUMBLABEL: | |
1190 | case C_BLOCK: | |
1191 | case C_FCN: | |
1192 | case C_EFCN: | |
1193 | if (cs->c_secnum != 0) | |
1194 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1195 | break; | |
1196 | } | |
1197 | } | |
1198 | } | |
1199 | \f | |
1200 | /* Support for string table handling */ | |
1201 | ||
1202 | static char *stringtab = NULL; | |
1203 | ||
1204 | static int | |
fba45db2 | 1205 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1206 | { |
1207 | long length; | |
1208 | int val; | |
1209 | unsigned char lengthbuf[4]; | |
1210 | ||
1211 | free_stringtab (); | |
1212 | ||
1213 | /* If the file is stripped, the offset might be zero, indicating no | |
1214 | string table. Just return with `stringtab' set to null. */ | |
1215 | if (offset == 0) | |
1216 | return 0; | |
1217 | ||
1218 | if (bfd_seek (abfd, offset, 0) < 0) | |
1219 | return -1; | |
1220 | ||
c5aa993b | 1221 | val = bfd_read ((char *) lengthbuf, sizeof lengthbuf, 1, abfd); |
c906108c | 1222 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1223 | |
c906108c SS |
1224 | /* If no string table is needed, then the file may end immediately |
1225 | after the symbols. Just return with `stringtab' set to null. */ | |
1226 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1227 | return 0; | |
1228 | ||
1229 | stringtab = (char *) xmalloc (length); | |
1230 | /* This is in target format (probably not very useful, and not currently | |
1231 | used), not host format. */ | |
1232 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
c5aa993b | 1233 | if (length == sizeof length) /* Empty table -- just the count */ |
c906108c SS |
1234 | return 0; |
1235 | ||
1236 | val = bfd_read (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, 1, abfd); | |
1237 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') | |
1238 | return -1; | |
1239 | ||
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | static void | |
fba45db2 | 1244 | free_stringtab (void) |
c906108c SS |
1245 | { |
1246 | if (stringtab) | |
b8c9b27d | 1247 | xfree (stringtab); |
c906108c SS |
1248 | stringtab = NULL; |
1249 | } | |
1250 | ||
74b7792f AC |
1251 | static void |
1252 | free_stringtab_cleanup (void *ignore) | |
1253 | { | |
1254 | free_stringtab (); | |
1255 | } | |
1256 | ||
c906108c | 1257 | static char * |
fba45db2 | 1258 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1259 | { |
c5aa993b | 1260 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1261 | char *result; |
1262 | ||
1263 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1264 | { | |
1265 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1266 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1267 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1268 | } | |
1269 | else | |
1270 | { | |
1271 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1272 | buffer[SYMNMLEN] = '\0'; | |
1273 | result = buffer; | |
1274 | } | |
1275 | return result; | |
1276 | } | |
1277 | ||
1278 | /* Extract the file name from the aux entry of a C_FILE symbol. Return | |
1279 | only the last component of the name. Result is in static storage and | |
1280 | is only good for temporary use. */ | |
1281 | ||
1282 | static char * | |
fba45db2 | 1283 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1284 | { |
1285 | static char buffer[BUFSIZ]; | |
1286 | register char *temp; | |
1287 | char *result; | |
1288 | ||
1289 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1290 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1291 | else | |
1292 | { | |
1293 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1294 | buffer[FILNMLEN] = '\0'; | |
1295 | } | |
1296 | result = buffer; | |
1297 | ||
1298 | /* FIXME: We should not be throwing away the information about what | |
1299 | directory. It should go into dirname of the symtab, or some such | |
1300 | place. */ | |
1301 | if ((temp = strrchr (result, '/')) != NULL) | |
1302 | result = temp + 1; | |
1303 | return (result); | |
1304 | } | |
1305 | \f | |
1306 | /* Support for line number handling. */ | |
1307 | ||
1308 | static char *linetab = NULL; | |
1309 | static long linetab_offset; | |
1310 | static unsigned long linetab_size; | |
1311 | ||
1312 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1313 | external (unswapped) format in memory; we'll swap them as we enter | |
1314 | them into GDB's data structures. */ | |
c5aa993b | 1315 | |
c906108c | 1316 | static int |
fba45db2 | 1317 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1318 | { |
1319 | int val; | |
1320 | ||
1321 | linetab_offset = offset; | |
1322 | linetab_size = size; | |
1323 | ||
c5aa993b | 1324 | free_linetab (); |
c906108c SS |
1325 | |
1326 | if (size == 0) | |
1327 | return 0; | |
1328 | ||
1329 | if (bfd_seek (abfd, offset, 0) < 0) | |
1330 | return -1; | |
c5aa993b | 1331 | |
c906108c SS |
1332 | /* Allocate the desired table, plus a sentinel */ |
1333 | linetab = (char *) xmalloc (size + local_linesz); | |
1334 | ||
1335 | val = bfd_read (linetab, size, 1, abfd); | |
1336 | if (val != size) | |
1337 | return -1; | |
1338 | ||
1339 | /* Terminate it with an all-zero sentinel record */ | |
1340 | memset (linetab + size, 0, local_linesz); | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | static void | |
fba45db2 | 1346 | free_linetab (void) |
c906108c SS |
1347 | { |
1348 | if (linetab) | |
b8c9b27d | 1349 | xfree (linetab); |
c906108c SS |
1350 | linetab = NULL; |
1351 | } | |
1352 | ||
74b7792f AC |
1353 | static void |
1354 | free_linetab_cleanup (void *ignore) | |
1355 | { | |
1356 | free_linetab (); | |
1357 | } | |
1358 | ||
c906108c SS |
1359 | #if !defined (L_LNNO32) |
1360 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1361 | #endif | |
1362 | ||
1363 | static void | |
fba45db2 KB |
1364 | enter_linenos (long file_offset, register int first_line, |
1365 | register int last_line, struct objfile *objfile) | |
c906108c SS |
1366 | { |
1367 | register char *rawptr; | |
1368 | struct internal_lineno lptr; | |
1369 | ||
1370 | if (!linetab) | |
c5aa993b | 1371 | return; |
c906108c SS |
1372 | if (file_offset < linetab_offset) |
1373 | { | |
1374 | complain (&lineno_complaint, file_offset); | |
1375 | if (file_offset > linetab_size) /* Too big to be an offset? */ | |
1376 | return; | |
c5aa993b | 1377 | file_offset += linetab_offset; /* Try reading at that linetab offset */ |
c906108c | 1378 | } |
c5aa993b | 1379 | |
c906108c SS |
1380 | rawptr = &linetab[file_offset - linetab_offset]; |
1381 | ||
1382 | /* skip first line entry for each function */ | |
1383 | rawptr += local_linesz; | |
1384 | /* line numbers start at one for the first line of the function */ | |
1385 | first_line--; | |
1386 | ||
c5aa993b JM |
1387 | for (;;) |
1388 | { | |
1389 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1390 | rawptr += local_linesz; | |
1391 | /* The next function, or the sentinel, will have L_LNNO32 zero; we exit. */ | |
1392 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) | |
1393 | record_line (current_subfile, first_line + L_LNNO32 (&lptr), | |
1394 | lptr.l_addr.l_paddr | |
b8fbeb18 | 1395 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1396 | else |
1397 | break; | |
1398 | } | |
c906108c SS |
1399 | } |
1400 | \f | |
1401 | static void | |
fba45db2 | 1402 | patch_type (struct type *type, struct type *real_type) |
c906108c SS |
1403 | { |
1404 | register struct type *target = TYPE_TARGET_TYPE (type); | |
1405 | register struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1406 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); | |
1407 | ||
1408 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1409 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1410 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); | |
1411 | ||
1412 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); | |
1413 | ||
1414 | if (TYPE_NAME (real_target)) | |
1415 | { | |
1416 | if (TYPE_NAME (target)) | |
b8c9b27d | 1417 | xfree (TYPE_NAME (target)); |
c906108c SS |
1418 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
1419 | } | |
1420 | } | |
1421 | ||
1422 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
1423 | so that they can be used to print out opaque data structures properly. */ | |
1424 | ||
1425 | static void | |
fba45db2 | 1426 | patch_opaque_types (struct symtab *s) |
c906108c SS |
1427 | { |
1428 | register struct block *b; | |
1429 | register int i; | |
1430 | register struct symbol *real_sym; | |
c5aa993b | 1431 | |
c906108c SS |
1432 | /* Go through the per-file symbols only */ |
1433 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1434 | for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) | |
1435 | { | |
1436 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1437 | Remove syms from the chain when their types are stored, |
1438 | but search the whole chain, as there may be several syms | |
1439 | from different files with the same name. */ | |
c906108c SS |
1440 | real_sym = BLOCK_SYM (b, i); |
1441 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && | |
1442 | SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE && | |
1443 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && | |
1444 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
1445 | { | |
1446 | register char *name = SYMBOL_NAME (real_sym); | |
1447 | register int hash = hashname (name); | |
1448 | register struct symbol *sym, *prev; | |
c5aa993b | 1449 | |
c906108c SS |
1450 | prev = 0; |
1451 | for (sym = opaque_type_chain[hash]; sym;) | |
1452 | { | |
1453 | if (name[0] == SYMBOL_NAME (sym)[0] && | |
1454 | STREQ (name + 1, SYMBOL_NAME (sym) + 1)) | |
1455 | { | |
1456 | if (prev) | |
1457 | { | |
1458 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1459 | } | |
1460 | else | |
1461 | { | |
1462 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1463 | } | |
c5aa993b | 1464 | |
c906108c | 1465 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1466 | |
c906108c SS |
1467 | if (prev) |
1468 | { | |
1469 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1470 | } | |
1471 | else | |
1472 | { | |
1473 | sym = opaque_type_chain[hash]; | |
1474 | } | |
1475 | } | |
1476 | else | |
1477 | { | |
1478 | prev = sym; | |
1479 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1480 | } | |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | } | |
1485 | \f | |
1486 | static struct symbol * | |
fba45db2 KB |
1487 | process_coff_symbol (register struct coff_symbol *cs, |
1488 | register union internal_auxent *aux, | |
1489 | struct objfile *objfile) | |
c906108c SS |
1490 | { |
1491 | register struct symbol *sym | |
c5aa993b JM |
1492 | = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, |
1493 | sizeof (struct symbol)); | |
c906108c SS |
1494 | char *name; |
1495 | ||
1496 | memset (sym, 0, sizeof (struct symbol)); | |
1497 | name = cs->c_name; | |
1498 | name = EXTERNAL_NAME (name, objfile->obfd); | |
1499 | SYMBOL_NAME (sym) = obsavestring (name, strlen (name), | |
1500 | &objfile->symbol_obstack); | |
1501 | SYMBOL_LANGUAGE (sym) = language_auto; | |
1502 | SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack); | |
1503 | ||
1504 | /* default assumptions */ | |
1505 | SYMBOL_VALUE (sym) = cs->c_value; | |
1506 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1507 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); | |
1508 | ||
1509 | if (ISFCN (cs->c_type)) | |
1510 | { | |
b8fbeb18 | 1511 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1512 | SYMBOL_TYPE (sym) = |
1513 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
c906108c SS |
1514 | |
1515 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1516 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT | |
1517 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1518 | add_symbol_to_list (sym, &file_symbols); | |
1519 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1520 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1521 | add_symbol_to_list (sym, &global_symbols); | |
1522 | } | |
1523 | else | |
1524 | { | |
1525 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1526 | switch (cs->c_sclass) | |
1527 | { | |
c5aa993b JM |
1528 | case C_NULL: |
1529 | break; | |
c906108c | 1530 | |
c5aa993b JM |
1531 | case C_AUTO: |
1532 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1533 | add_symbol_to_list (sym, &local_symbols); | |
1534 | break; | |
c906108c | 1535 | |
c5aa993b JM |
1536 | case C_THUMBEXT: |
1537 | case C_THUMBEXTFUNC: | |
1538 | case C_EXT: | |
1539 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1540 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1541 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1542 | add_symbol_to_list (sym, &global_symbols); |
1543 | break; | |
c906108c | 1544 | |
c5aa993b JM |
1545 | case C_THUMBSTAT: |
1546 | case C_THUMBSTATFUNC: | |
1547 | case C_STAT: | |
1548 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1549 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1550 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1551 | if (within_function) |
1552 | { | |
c906108c SS |
1553 | /* Static symbol of local scope */ |
1554 | add_symbol_to_list (sym, &local_symbols); | |
1555 | } | |
c5aa993b JM |
1556 | else |
1557 | { | |
c906108c SS |
1558 | /* Static symbol at top level of file */ |
1559 | add_symbol_to_list (sym, &file_symbols); | |
1560 | } | |
c5aa993b | 1561 | break; |
c906108c SS |
1562 | |
1563 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1564 | case C_GLBLREG: |
c906108c | 1565 | #endif |
c5aa993b JM |
1566 | case C_REG: |
1567 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1568 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM (cs->c_value); | |
1569 | add_symbol_to_list (sym, &local_symbols); | |
1570 | break; | |
c906108c | 1571 | |
c5aa993b JM |
1572 | case C_THUMBLABEL: |
1573 | case C_LABEL: | |
1574 | break; | |
c906108c | 1575 | |
c5aa993b JM |
1576 | case C_ARG: |
1577 | SYMBOL_CLASS (sym) = LOC_ARG; | |
1578 | add_symbol_to_list (sym, &local_symbols); | |
c906108c | 1579 | #if !defined (BELIEVE_PCC_PROMOTION) |
c5aa993b JM |
1580 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) |
1581 | { | |
1582 | /* If PCC says a parameter is a short or a char, | |
1583 | aligned on an int boundary, realign it to the | |
1584 | "little end" of the int. */ | |
1585 | struct type *temptype; | |
1586 | temptype = lookup_fundamental_type (current_objfile, | |
1587 | FT_INTEGER); | |
1588 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1589 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
1590 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
1591 | { | |
1592 | SYMBOL_VALUE (sym) += | |
1593 | TYPE_LENGTH (temptype) | |
1594 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1595 | } | |
1596 | } | |
c906108c | 1597 | #endif |
c5aa993b | 1598 | break; |
c906108c | 1599 | |
c5aa993b JM |
1600 | case C_REGPARM: |
1601 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
1602 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM (cs->c_value); | |
1603 | add_symbol_to_list (sym, &local_symbols); | |
c906108c | 1604 | #if !defined (BELIEVE_PCC_PROMOTION) |
c5aa993b JM |
1605 | /* FIXME: This should retain the current type, since it's just |
1606 | a register value. gnu@adobe, 26Feb93 */ | |
1607 | { | |
1608 | /* If PCC says a parameter is a short or a char, | |
1609 | it is really an int. */ | |
1610 | struct type *temptype; | |
1611 | temptype = | |
1612 | lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1613 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1614 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
c906108c | 1615 | { |
c5aa993b JM |
1616 | SYMBOL_TYPE (sym) = |
1617 | (TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1618 | ? lookup_fundamental_type (current_objfile, | |
1619 | FT_UNSIGNED_INTEGER) | |
1620 | : temptype); | |
c906108c | 1621 | } |
c5aa993b | 1622 | } |
c906108c | 1623 | #endif |
c5aa993b | 1624 | break; |
c906108c | 1625 | |
c5aa993b JM |
1626 | case C_TPDEF: |
1627 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1628 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1629 | ||
1630 | /* If type has no name, give it one */ | |
1631 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
1632 | { | |
1633 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1634 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1635 | { | |
1636 | /* If we are giving a name to a type such as "pointer to | |
1637 | foo" or "function returning foo", we better not set | |
1638 | the TYPE_NAME. If the program contains "typedef char | |
1639 | *caddr_t;", we don't want all variables of type char | |
1640 | * to print as caddr_t. This is not just a | |
1641 | consequence of GDB's type management; CC and GCC (at | |
1642 | least through version 2.4) both output variables of | |
1643 | either type char * or caddr_t with the type | |
1644 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1645 | compiler cleans this up it GDB is not ready for it | |
1646 | yet, but if it becomes ready we somehow need to | |
1647 | disable this check (without breaking the PCC/GCC2.4 | |
1648 | case). | |
1649 | ||
1650 | Sigh. | |
1651 | ||
1652 | Fortunately, this check seems not to be necessary | |
1653 | for anything except pointers or functions. */ | |
1654 | ; | |
1655 | } | |
1656 | else | |
1657 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
1658 | concat (SYMBOL_NAME (sym), NULL); | |
1659 | } | |
c906108c | 1660 | #ifdef CXUX_TARGET |
c5aa993b JM |
1661 | /* Ignore vendor section for Harris CX/UX targets. */ |
1662 | else if (cs->c_name[0] == '$') | |
1663 | break; | |
c906108c SS |
1664 | #endif /* CXUX_TARGET */ |
1665 | ||
c5aa993b JM |
1666 | /* Keep track of any type which points to empty structured type, |
1667 | so it can be filled from a definition from another file. A | |
1668 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1669 | empty structured type, though; the forward references | |
1670 | work themselves out via the magic of coff_lookup_type. */ | |
1671 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && | |
1672 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && | |
1673 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1674 | TYPE_CODE_UNDEF) | |
1675 | { | |
1676 | register int i = hashname (SYMBOL_NAME (sym)); | |
c906108c | 1677 | |
c5aa993b JM |
1678 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1679 | opaque_type_chain[i] = sym; | |
1680 | } | |
1681 | add_symbol_to_list (sym, &file_symbols); | |
1682 | break; | |
c906108c | 1683 | |
c5aa993b JM |
1684 | case C_STRTAG: |
1685 | case C_UNTAG: | |
1686 | case C_ENTAG: | |
1687 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1688 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
1689 | ||
1690 | /* Some compilers try to be helpful by inventing "fake" | |
1691 | names for anonymous enums, structures, and unions, like | |
1692 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1693 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
1694 | if (SYMBOL_NAME (sym) != NULL | |
1695 | && *SYMBOL_NAME (sym) != '~' | |
1696 | && *SYMBOL_NAME (sym) != '.') | |
1697 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = | |
1698 | concat (SYMBOL_NAME (sym), NULL); | |
1699 | ||
1700 | add_symbol_to_list (sym, &file_symbols); | |
1701 | break; | |
c906108c | 1702 | |
c5aa993b JM |
1703 | default: |
1704 | break; | |
c906108c SS |
1705 | } |
1706 | } | |
1707 | return sym; | |
1708 | } | |
1709 | \f | |
1710 | /* Decode a coff type specifier; return the type that is meant. */ | |
1711 | ||
1712 | static struct type * | |
fba45db2 KB |
1713 | decode_type (register struct coff_symbol *cs, unsigned int c_type, |
1714 | register union internal_auxent *aux) | |
c906108c SS |
1715 | { |
1716 | register struct type *type = 0; | |
1717 | unsigned int new_c_type; | |
1718 | ||
1719 | if (c_type & ~N_BTMASK) | |
1720 | { | |
1721 | new_c_type = DECREF (c_type); | |
1722 | if (ISPTR (c_type)) | |
1723 | { | |
1724 | type = decode_type (cs, new_c_type, aux); | |
1725 | type = lookup_pointer_type (type); | |
1726 | } | |
1727 | else if (ISFCN (c_type)) | |
1728 | { | |
1729 | type = decode_type (cs, new_c_type, aux); | |
1730 | type = lookup_function_type (type); | |
1731 | } | |
1732 | else if (ISARY (c_type)) | |
1733 | { | |
1734 | int i, n; | |
1735 | register unsigned short *dim; | |
1736 | struct type *base_type, *index_type, *range_type; | |
1737 | ||
1738 | /* Define an array type. */ | |
1739 | /* auxent refers to array, not base type */ | |
1740 | if (aux->x_sym.x_tagndx.l == 0) | |
1741 | cs->c_naux = 0; | |
1742 | ||
1743 | /* shift the indices down */ | |
1744 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1745 | i = 1; | |
1746 | n = dim[0]; | |
1747 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1748 | *dim = *(dim + 1); | |
1749 | *dim = 0; | |
1750 | ||
1751 | base_type = decode_type (cs, new_c_type, aux); | |
1752 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1753 | range_type = | |
1754 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1755 | type = | |
1756 | create_array_type ((struct type *) NULL, base_type, range_type); | |
1757 | } | |
1758 | return type; | |
1759 | } | |
1760 | ||
1761 | /* Reference to existing type. This only occurs with the | |
1762 | struct, union, and enum types. EPI a29k coff | |
1763 | fakes us out by producing aux entries with a nonzero | |
1764 | x_tagndx for definitions of structs, unions, and enums, so we | |
1765 | have to check the c_sclass field. SCO 3.2v4 cc gets confused | |
1766 | with pointers to pointers to defined structs, and generates | |
1767 | negative x_tagndx fields. */ | |
1768 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) | |
1769 | { | |
1770 | if (cs->c_sclass != C_STRTAG | |
1771 | && cs->c_sclass != C_UNTAG | |
1772 | && cs->c_sclass != C_ENTAG | |
1773 | && aux->x_sym.x_tagndx.l >= 0) | |
1774 | { | |
1775 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1776 | return type; | |
1777 | } | |
1778 | else | |
1779 | { | |
1780 | complain (&tagndx_bad_complaint, cs->c_name); | |
1781 | /* And fall through to decode_base_type... */ | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1786 | } | |
1787 | ||
1788 | /* Decode a coff type specifier for function definition; | |
1789 | return the type that the function returns. */ | |
1790 | ||
1791 | static struct type * | |
fba45db2 KB |
1792 | decode_function_type (register struct coff_symbol *cs, unsigned int c_type, |
1793 | register union internal_auxent *aux) | |
c906108c SS |
1794 | { |
1795 | if (aux->x_sym.x_tagndx.l == 0) | |
c5aa993b | 1796 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
c906108c SS |
1797 | |
1798 | return decode_type (cs, DECREF (c_type), aux); | |
1799 | } | |
1800 | \f | |
1801 | /* basic C types */ | |
1802 | ||
1803 | static struct type * | |
fba45db2 KB |
1804 | decode_base_type (register struct coff_symbol *cs, unsigned int c_type, |
1805 | register union internal_auxent *aux) | |
c906108c SS |
1806 | { |
1807 | struct type *type; | |
1808 | ||
1809 | switch (c_type) | |
1810 | { | |
c5aa993b JM |
1811 | case T_NULL: |
1812 | /* shows up with "void (*foo)();" structure members */ | |
1813 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c SS |
1814 | |
1815 | #if 0 | |
1816 | /* DGUX actually defines both T_ARG and T_VOID to the same value. */ | |
1817 | #ifdef T_ARG | |
c5aa993b JM |
1818 | case T_ARG: |
1819 | /* Shows up in DGUX, I think. Not sure where. */ | |
1820 | return lookup_fundamental_type (current_objfile, FT_VOID); /* shouldn't show up here */ | |
c906108c SS |
1821 | #endif |
1822 | #endif /* 0 */ | |
1823 | ||
1824 | #ifdef T_VOID | |
c5aa993b JM |
1825 | case T_VOID: |
1826 | /* Intel 960 COFF has this symbol and meaning. */ | |
1827 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c SS |
1828 | #endif |
1829 | ||
c5aa993b JM |
1830 | case T_CHAR: |
1831 | return lookup_fundamental_type (current_objfile, FT_CHAR); | |
c906108c | 1832 | |
c5aa993b JM |
1833 | case T_SHORT: |
1834 | return lookup_fundamental_type (current_objfile, FT_SHORT); | |
c906108c | 1835 | |
c5aa993b JM |
1836 | case T_INT: |
1837 | return lookup_fundamental_type (current_objfile, FT_INTEGER); | |
c906108c | 1838 | |
c5aa993b JM |
1839 | case T_LONG: |
1840 | if (cs->c_sclass == C_FIELD | |
1841 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT) | |
1842 | return lookup_fundamental_type (current_objfile, FT_LONG_LONG); | |
1843 | else | |
1844 | return lookup_fundamental_type (current_objfile, FT_LONG); | |
c906108c | 1845 | |
c5aa993b JM |
1846 | case T_FLOAT: |
1847 | return lookup_fundamental_type (current_objfile, FT_FLOAT); | |
c906108c | 1848 | |
c5aa993b JM |
1849 | case T_DOUBLE: |
1850 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); | |
c906108c | 1851 | |
c5aa993b JM |
1852 | case T_LNGDBL: |
1853 | return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT); | |
c906108c | 1854 | |
c5aa993b JM |
1855 | case T_STRUCT: |
1856 | if (cs->c_naux != 1) | |
1857 | { | |
1858 | /* anonymous structure type */ | |
1859 | type = coff_alloc_type (cs->c_symnum); | |
1860 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1861 | TYPE_NAME (type) = NULL; | |
1862 | /* This used to set the tag to "<opaque>". But I think setting it | |
1863 | to NULL is right, and the printing code can print it as | |
1864 | "struct {...}". */ | |
1865 | TYPE_TAG_NAME (type) = NULL; | |
1866 | INIT_CPLUS_SPECIFIC (type); | |
1867 | TYPE_LENGTH (type) = 0; | |
1868 | TYPE_FIELDS (type) = 0; | |
1869 | TYPE_NFIELDS (type) = 0; | |
1870 | } | |
1871 | else | |
1872 | { | |
1873 | type = coff_read_struct_type (cs->c_symnum, | |
1874 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1875 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1876 | } | |
1877 | return type; | |
c906108c | 1878 | |
c5aa993b JM |
1879 | case T_UNION: |
1880 | if (cs->c_naux != 1) | |
1881 | { | |
1882 | /* anonymous union type */ | |
1883 | type = coff_alloc_type (cs->c_symnum); | |
1884 | TYPE_NAME (type) = NULL; | |
1885 | /* This used to set the tag to "<opaque>". But I think setting it | |
1886 | to NULL is right, and the printing code can print it as | |
1887 | "union {...}". */ | |
1888 | TYPE_TAG_NAME (type) = NULL; | |
1889 | INIT_CPLUS_SPECIFIC (type); | |
1890 | TYPE_LENGTH (type) = 0; | |
1891 | TYPE_FIELDS (type) = 0; | |
1892 | TYPE_NFIELDS (type) = 0; | |
1893 | } | |
1894 | else | |
1895 | { | |
1896 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1897 | aux->x_sym.x_misc.x_lnsz.x_size, |
c5aa993b JM |
1898 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1899 | } | |
1900 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1901 | return type; | |
c906108c | 1902 | |
c5aa993b JM |
1903 | case T_ENUM: |
1904 | if (cs->c_naux != 1) | |
1905 | { | |
1906 | /* anonymous enum type */ | |
1907 | type = coff_alloc_type (cs->c_symnum); | |
1908 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1909 | TYPE_NAME (type) = NULL; | |
1910 | /* This used to set the tag to "<opaque>". But I think setting it | |
1911 | to NULL is right, and the printing code can print it as | |
1912 | "enum {...}". */ | |
1913 | TYPE_TAG_NAME (type) = NULL; | |
1914 | TYPE_LENGTH (type) = 0; | |
1915 | TYPE_FIELDS (type) = 0; | |
1916 | TYPE_NFIELDS (type) = 0; | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | type = coff_read_enum_type (cs->c_symnum, | |
1921 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1922 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1923 | } | |
1924 | return type; | |
1925 | ||
1926 | case T_MOE: | |
1927 | /* shouldn't show up here */ | |
1928 | break; | |
c906108c | 1929 | |
c5aa993b JM |
1930 | case T_UCHAR: |
1931 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); | |
c906108c | 1932 | |
c5aa993b JM |
1933 | case T_USHORT: |
1934 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); | |
c906108c | 1935 | |
c5aa993b JM |
1936 | case T_UINT: |
1937 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); | |
c906108c | 1938 | |
c5aa993b JM |
1939 | case T_ULONG: |
1940 | if (cs->c_sclass == C_FIELD | |
1941 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT) | |
1942 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG); | |
1943 | else | |
1944 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); | |
c906108c SS |
1945 | } |
1946 | complain (&unexpected_type_complaint, cs->c_name); | |
1947 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
1948 | } | |
1949 | \f | |
1950 | /* This page contains subroutines of read_type. */ | |
1951 | ||
1952 | /* Read the description of a structure (or union type) and return an | |
1953 | object describing the type. */ | |
1954 | ||
1955 | static struct type * | |
fba45db2 | 1956 | coff_read_struct_type (int index, int length, int lastsym) |
c906108c SS |
1957 | { |
1958 | struct nextfield | |
1959 | { | |
1960 | struct nextfield *next; | |
1961 | struct field field; | |
1962 | }; | |
1963 | ||
1964 | register struct type *type; | |
1965 | register struct nextfield *list = 0; | |
1966 | struct nextfield *new; | |
1967 | int nfields = 0; | |
1968 | register int n; | |
1969 | char *name; | |
1970 | struct coff_symbol member_sym; | |
1971 | register struct coff_symbol *ms = &member_sym; | |
1972 | struct internal_syment sub_sym; | |
1973 | union internal_auxent sub_aux; | |
1974 | int done = 0; | |
1975 | ||
1976 | type = coff_alloc_type (index); | |
1977 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 1978 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1979 | TYPE_LENGTH (type) = length; |
1980 | ||
1981 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1982 | { | |
1983 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1984 | name = ms->c_name; | |
1985 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
1986 | ||
1987 | switch (ms->c_sclass) | |
1988 | { | |
c5aa993b JM |
1989 | case C_MOS: |
1990 | case C_MOU: | |
1991 | ||
1992 | /* Get space to record the next field's data. */ | |
1993 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1994 | new->next = list; | |
1995 | list = new; | |
1996 | ||
1997 | /* Save the data. */ | |
1998 | list->field.name = | |
1999 | obsavestring (name, | |
2000 | strlen (name), | |
2001 | ¤t_objfile->symbol_obstack); | |
2002 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); | |
2003 | FIELD_BITPOS (list->field) = 8 * ms->c_value; | |
2004 | FIELD_BITSIZE (list->field) = 0; | |
2005 | nfields++; | |
2006 | break; | |
c906108c | 2007 | |
c5aa993b JM |
2008 | case C_FIELD: |
2009 | ||
2010 | /* Get space to record the next field's data. */ | |
2011 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2012 | new->next = list; | |
2013 | list = new; | |
2014 | ||
2015 | /* Save the data. */ | |
2016 | list->field.name = | |
2017 | obsavestring (name, | |
2018 | strlen (name), | |
2019 | ¤t_objfile->symbol_obstack); | |
2020 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); | |
2021 | FIELD_BITPOS (list->field) = ms->c_value; | |
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 | ||
2033 | TYPE_NFIELDS (type) = nfields; | |
2034 | TYPE_FIELDS (type) = (struct field *) | |
2035 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2036 | ||
2037 | /* Copy the saved-up fields into the field vector. */ | |
2038 | ||
2039 | for (n = nfields; list; list = list->next) | |
2040 | TYPE_FIELD (type, --n) = list->field; | |
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 | ||
2049 | /* ARGSUSED */ | |
2050 | static struct type * | |
fba45db2 | 2051 | coff_read_enum_type (int index, int length, int lastsym) |
c906108c SS |
2052 | { |
2053 | register struct symbol *sym; | |
2054 | register struct type *type; | |
2055 | int nsyms = 0; | |
2056 | int done = 0; | |
2057 | struct pending **symlist; | |
2058 | struct coff_symbol member_sym; | |
2059 | register struct coff_symbol *ms = &member_sym; | |
2060 | struct internal_syment sub_sym; | |
2061 | union internal_auxent sub_aux; | |
2062 | struct pending *osyms, *syms; | |
2063 | int o_nsyms; | |
2064 | register int n; | |
2065 | char *name; | |
2066 | int unsigned_enum = 1; | |
2067 | ||
2068 | type = coff_alloc_type (index); | |
2069 | if (within_function) | |
2070 | symlist = &local_symbols; | |
2071 | else | |
2072 | symlist = &file_symbols; | |
2073 | osyms = *symlist; | |
2074 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2075 | ||
2076 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2077 | { | |
2078 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2079 | name = ms->c_name; | |
2080 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
2081 | ||
2082 | switch (ms->c_sclass) | |
2083 | { | |
c5aa993b JM |
2084 | case C_MOE: |
2085 | sym = (struct symbol *) obstack_alloc | |
2086 | (¤t_objfile->symbol_obstack, | |
2087 | sizeof (struct symbol)); | |
2088 | memset (sym, 0, sizeof (struct symbol)); | |
2089 | ||
2090 | SYMBOL_NAME (sym) = | |
2091 | obsavestring (name, strlen (name), | |
2092 | ¤t_objfile->symbol_obstack); | |
2093 | SYMBOL_CLASS (sym) = LOC_CONST; | |
2094 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2095 | SYMBOL_VALUE (sym) = ms->c_value; | |
2096 | add_symbol_to_list (sym, symlist); | |
2097 | nsyms++; | |
2098 | break; | |
c906108c | 2099 | |
c5aa993b JM |
2100 | case C_EOS: |
2101 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2102 | up the count of how many symbols to read. So stop | |
2103 | on .eos. */ | |
2104 | done = 1; | |
2105 | break; | |
c906108c SS |
2106 | } |
2107 | } | |
2108 | ||
2109 | /* Now fill in the fields of the type-structure. */ | |
2110 | ||
2111 | if (length > 0) | |
2112 | TYPE_LENGTH (type) = length; | |
2113 | else | |
c5aa993b | 2114 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ |
c906108c SS |
2115 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2116 | TYPE_NFIELDS (type) = nsyms; | |
2117 | TYPE_FIELDS (type) = (struct field *) | |
2118 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2119 | ||
2120 | /* Find the symbols for the values and put them into the type. | |
2121 | The symbols can be found in the symlist that we put them on | |
2122 | to cause them to be defined. osyms contains the old value | |
2123 | of that symlist; everything up to there was defined by us. */ | |
2124 | /* Note that we preserve the order of the enum constants, so | |
2125 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2126 | FOO, not LAST_THING. */ | |
2127 | ||
2128 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2129 | { | |
2130 | int j = 0; | |
2131 | ||
2132 | if (syms == osyms) | |
2133 | j = o_nsyms; | |
c5aa993b | 2134 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2135 | { |
2136 | struct symbol *xsym = syms->symbol[j]; | |
2137 | SYMBOL_TYPE (xsym) = type; | |
2138 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2139 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2140 | if (SYMBOL_VALUE (xsym) < 0) | |
2141 | unsigned_enum = 0; | |
2142 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2143 | } | |
2144 | if (syms == osyms) | |
2145 | break; | |
2146 | } | |
2147 | ||
2148 | if (unsigned_enum) | |
2149 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
2150 | ||
2151 | return type; | |
2152 | } | |
2153 | ||
2154 | /* Register our ability to parse symbols for coff BFD files. */ | |
2155 | ||
2156 | static struct sym_fns coff_sym_fns = | |
2157 | { | |
2158 | bfd_target_coff_flavour, | |
c5aa993b JM |
2159 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2160 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2161 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2162 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 2163 | default_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
c5aa993b | 2164 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
2165 | }; |
2166 | ||
2167 | void | |
fba45db2 | 2168 | _initialize_coffread (void) |
c906108c SS |
2169 | { |
2170 | add_symtab_fns (&coff_sym_fns); | |
2171 | } |