Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
b6ba6518 | 2 | Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
4a146b47 | 3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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" | |
04ea0df1 | 31 | #include "gdb_obstack.h" |
c906108c SS |
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 */ | |
c906108c SS |
38 | #include "objfiles.h" |
39 | #include "buildsym.h" | |
40 | #include "gdb-stabs.h" | |
41 | #include "stabsread.h" | |
42 | #include "complaints.h" | |
43 | #include "target.h" | |
6ec4c4bd | 44 | #include "gdb_assert.h" |
fe898f56 | 45 | #include "block.h" |
de4f826b | 46 | #include "dictionary.h" |
c906108c | 47 | |
1b6bc7e0 CF |
48 | #include "coff-pe-read.h" |
49 | ||
a14ed312 | 50 | extern void _initialize_coffread (void); |
392a587b | 51 | |
c5aa993b JM |
52 | struct coff_symfile_info |
53 | { | |
54 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
55 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
c906108c | 56 | |
c5aa993b JM |
57 | CORE_ADDR textaddr; /* Addr of .text section. */ |
58 | unsigned int textsize; /* Size of .text section. */ | |
59 | struct stab_section_list *stabsects; /* .stab sections. */ | |
60 | asection *stabstrsect; /* Section pointer for .stab section */ | |
61 | char *stabstrdata; | |
62 | }; | |
c906108c SS |
63 | |
64 | /* Translate an external name string into a user-visible name. */ | |
65 | #define EXTERNAL_NAME(string, abfd) \ | |
66 | (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) | |
67 | ||
68 | /* To be an sdb debug type, type must have at least a basic or primary | |
69 | derived type. Using this rather than checking against T_NULL is | |
70 | said to prevent core dumps if we try to operate on Michael Bloom | |
71 | dbx-in-coff file. */ | |
72 | ||
73 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
74 | ||
c906108c SS |
75 | /* Core address of start and end of text of current source file. |
76 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
77 | ||
78 | static CORE_ADDR current_source_start_addr; | |
79 | static CORE_ADDR current_source_end_addr; | |
80 | ||
81 | /* The addresses of the symbol table stream and number of symbols | |
82 | of the object file we are reading (as copied into core). */ | |
83 | ||
84 | static bfd *nlist_bfd_global; | |
85 | static int nlist_nsyms_global; | |
86 | ||
c906108c SS |
87 | |
88 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ | |
89 | ||
90 | static char *temp_sym; | |
91 | static char *temp_aux; | |
92 | ||
93 | /* Local variables that hold the shift and mask values for the | |
94 | COFF file that we are currently reading. These come back to us | |
95 | from BFD, and are referenced by their macro names, as well as | |
96 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
97 | macros from include/coff/internal.h . */ | |
98 | ||
c5aa993b JM |
99 | static unsigned local_n_btmask; |
100 | static unsigned local_n_btshft; | |
101 | static unsigned local_n_tmask; | |
102 | static unsigned local_n_tshift; | |
c906108c SS |
103 | |
104 | #define N_BTMASK local_n_btmask | |
105 | #define N_BTSHFT local_n_btshft | |
106 | #define N_TMASK local_n_tmask | |
107 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 108 | |
c906108c SS |
109 | /* Local variables that hold the sizes in the file of various COFF structures. |
110 | (We only need to know this to read them from the file -- BFD will then | |
111 | translate the data in them, into `internal_xxx' structs in the right | |
112 | byte order, alignment, etc.) */ | |
113 | ||
c5aa993b JM |
114 | static unsigned local_linesz; |
115 | static unsigned local_symesz; | |
116 | static unsigned local_auxesz; | |
c906108c SS |
117 | |
118 | /* This is set if this is a PE format file. */ | |
119 | ||
120 | static int pe_file; | |
121 | ||
122 | /* Chain of typedefs of pointers to empty struct/union types. | |
123 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
124 | ||
125 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
126 | ||
c906108c SS |
127 | /* Simplified internal version of coff symbol table information */ |
128 | ||
c5aa993b JM |
129 | struct coff_symbol |
130 | { | |
131 | char *c_name; | |
132 | int c_symnum; /* symbol number of this entry */ | |
133 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ | |
134 | long c_value; | |
135 | int c_sclass; | |
136 | int c_secnum; | |
137 | unsigned int c_type; | |
138 | }; | |
c906108c | 139 | |
a14ed312 | 140 | extern void stabsread_clear_cache (void); |
7be570e7 | 141 | |
a14ed312 | 142 | static struct type *coff_read_struct_type (int, int, int); |
c906108c | 143 | |
a14ed312 KB |
144 | static struct type *decode_base_type (struct coff_symbol *, |
145 | unsigned int, union internal_auxent *); | |
c906108c | 146 | |
a14ed312 KB |
147 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
148 | union internal_auxent *); | |
c906108c | 149 | |
a14ed312 KB |
150 | static struct type *decode_function_type (struct coff_symbol *, |
151 | unsigned int, | |
152 | union internal_auxent *); | |
c906108c | 153 | |
a14ed312 | 154 | static struct type *coff_read_enum_type (int, int, int); |
c906108c | 155 | |
a14ed312 KB |
156 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
157 | union internal_auxent *, | |
158 | struct objfile *); | |
c906108c | 159 | |
a14ed312 | 160 | static void patch_opaque_types (struct symtab *); |
c906108c | 161 | |
a14ed312 | 162 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 163 | |
a14ed312 | 164 | static void free_linetab (void); |
c906108c | 165 | |
74b7792f AC |
166 | static void free_linetab_cleanup (void *ignore); |
167 | ||
a14ed312 | 168 | static int init_lineno (bfd *, long, int); |
c906108c | 169 | |
a14ed312 | 170 | static char *getsymname (struct internal_syment *); |
c906108c | 171 | |
a14ed312 | 172 | static char *coff_getfilename (union internal_auxent *); |
c906108c | 173 | |
a14ed312 | 174 | static void free_stringtab (void); |
c906108c | 175 | |
74b7792f AC |
176 | static void free_stringtab_cleanup (void *ignore); |
177 | ||
a14ed312 | 178 | static int init_stringtab (bfd *, long); |
c906108c | 179 | |
a14ed312 KB |
180 | static void read_one_sym (struct coff_symbol *, |
181 | struct internal_syment *, union internal_auxent *); | |
c906108c | 182 | |
a14ed312 | 183 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
184 | \f |
185 | /* We are called once per section from coff_symfile_read. We | |
186 | need to examine each section we are passed, check to see | |
187 | if it is something we are interested in processing, and | |
188 | if so, stash away some access information for the section. | |
189 | ||
190 | FIXME: The section names should not be hardwired strings (what | |
191 | should they be? I don't think most object file formats have enough | |
192 | section flags to specify what kind of debug section it is | |
193 | -kingdon). */ | |
194 | ||
195 | static void | |
12b9c64f | 196 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 197 | { |
52f0bd74 | 198 | struct coff_symfile_info *csi; |
c906108c SS |
199 | const char *name; |
200 | ||
201 | csi = (struct coff_symfile_info *) csip; | |
202 | name = bfd_get_section_name (abfd, sectp); | |
cb137aa5 | 203 | if (DEPRECATED_STREQ (name, ".text")) |
c906108c SS |
204 | { |
205 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
206 | csi->textsize += bfd_section_size (abfd, sectp); | |
207 | } | |
208 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
209 | { | |
210 | csi->textsize += bfd_section_size (abfd, sectp); | |
211 | } | |
cb137aa5 | 212 | else if (DEPRECATED_STREQ (name, ".stabstr")) |
c906108c SS |
213 | { |
214 | csi->stabstrsect = sectp; | |
215 | } | |
216 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
217 | { | |
218 | const char *s; | |
219 | ||
220 | /* We can have multiple .stab sections if linked with | |
221 | --split-by-reloc. */ | |
222 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 223 | if (!isdigit (*s)) |
c906108c SS |
224 | break; |
225 | if (*s == '\0') | |
226 | { | |
227 | struct stab_section_list *n, **pn; | |
228 | ||
229 | n = ((struct stab_section_list *) | |
230 | xmalloc (sizeof (struct stab_section_list))); | |
231 | n->section = sectp; | |
232 | n->next = NULL; | |
233 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
234 | ; | |
235 | *pn = n; | |
236 | ||
237 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
238 | in coff_symfile_read, at which point we no longer need |
239 | the information. */ | |
b8c9b27d | 240 | make_cleanup (xfree, n); |
c906108c SS |
241 | } |
242 | } | |
243 | } | |
244 | ||
245 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 246 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 247 | |
c5aa993b JM |
248 | struct find_targ_sec_arg |
249 | { | |
250 | int targ_index; | |
251 | asection **resultp; | |
252 | }; | |
c906108c | 253 | |
c5aa993b | 254 | static void |
12b9c64f | 255 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 256 | { |
c5aa993b | 257 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c906108c SS |
258 | if (sect->target_index == args->targ_index) |
259 | *args->resultp = sect; | |
260 | } | |
261 | ||
262 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
263 | static int | |
fba45db2 | 264 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
265 | { |
266 | asection *sect = NULL; | |
267 | struct find_targ_sec_arg args; | |
b8fbeb18 | 268 | int off = SECT_OFF_TEXT (objfile); |
c906108c SS |
269 | |
270 | args.targ_index = cs->c_secnum; | |
271 | args.resultp = § | |
272 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
273 | if (sect != NULL) | |
274 | { | |
275 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
276 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 277 | off = SECT_OFF_TEXT (objfile); |
c906108c | 278 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 279 | off = SECT_OFF_DATA (objfile); |
c906108c | 280 | else |
a4c8257b EZ |
281 | /* Just return the bfd section index. */ |
282 | off = sect->index; | |
c906108c SS |
283 | } |
284 | return off; | |
285 | } | |
286 | ||
287 | /* Return the address of the section of a COFF symbol. */ | |
288 | ||
a14ed312 | 289 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
290 | |
291 | static CORE_ADDR | |
fba45db2 | 292 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
293 | { |
294 | asection *sect = NULL; | |
295 | struct find_targ_sec_arg args; | |
296 | CORE_ADDR addr = 0; | |
297 | ||
298 | args.targ_index = cs->c_secnum; | |
299 | args.resultp = § | |
300 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
301 | if (sect != NULL) | |
302 | addr = bfd_get_section_vma (objfile->obfd, sect); | |
303 | return addr; | |
304 | } | |
305 | ||
306 | /* Look up a coff type-number index. Return the address of the slot | |
307 | where the type for that index is stored. | |
308 | The type-number is in INDEX. | |
309 | ||
310 | This can be used for finding the type associated with that index | |
311 | or for associating a new type with the index. */ | |
312 | ||
313 | static struct type ** | |
aa1ee363 | 314 | coff_lookup_type (int index) |
c906108c SS |
315 | { |
316 | if (index >= type_vector_length) | |
317 | { | |
318 | int old_vector_length = type_vector_length; | |
319 | ||
320 | type_vector_length *= 2; | |
c5aa993b | 321 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
322 | type_vector_length = index * 2; |
323 | ||
324 | type_vector = (struct type **) | |
325 | xrealloc ((char *) type_vector, | |
326 | type_vector_length * sizeof (struct type *)); | |
327 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 328 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
329 | } |
330 | return &type_vector[index]; | |
331 | } | |
332 | ||
333 | /* Make sure there is a type allocated for type number index | |
334 | and return the type object. | |
335 | This can create an empty (zeroed) type object. */ | |
336 | ||
337 | static struct type * | |
fba45db2 | 338 | coff_alloc_type (int index) |
c906108c | 339 | { |
52f0bd74 AC |
340 | struct type **type_addr = coff_lookup_type (index); |
341 | struct type *type = *type_addr; | |
c906108c SS |
342 | |
343 | /* If we are referring to a type not known at all yet, | |
344 | allocate an empty type for it. | |
345 | We will fill it in later if we find out how. */ | |
346 | if (type == NULL) | |
347 | { | |
348 | type = alloc_type (current_objfile); | |
349 | *type_addr = type; | |
350 | } | |
351 | return type; | |
352 | } | |
353 | \f | |
c906108c SS |
354 | /* Start a new symtab for a new source file. |
355 | This is called when a COFF ".file" symbol is seen; | |
356 | it indicates the start of data for one original source file. */ | |
357 | ||
358 | static void | |
fba45db2 | 359 | coff_start_symtab (char *name) |
c906108c SS |
360 | { |
361 | start_symtab ( | |
c5aa993b JM |
362 | /* We fill in the filename later. start_symtab puts |
363 | this pointer into last_source_file and we put it in | |
364 | subfiles->name, which end_symtab frees; that's why | |
365 | it must be malloc'd. */ | |
366 | savestring (name, strlen (name)), | |
367 | /* We never know the directory name for COFF. */ | |
368 | NULL, | |
369 | /* The start address is irrelevant, since we set | |
370 | last_source_start_addr in coff_end_symtab. */ | |
371 | 0); | |
c906108c | 372 | record_debugformat ("COFF"); |
c906108c SS |
373 | } |
374 | ||
375 | /* Save the vital information from when starting to read a file, | |
376 | for use when closing off the current file. | |
377 | NAME is the file name the symbols came from, START_ADDR is the first | |
378 | text address for the file, and SIZE is the number of bytes of text. */ | |
379 | ||
380 | static void | |
fba45db2 | 381 | complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c SS |
382 | { |
383 | if (last_source_file != NULL) | |
b8c9b27d | 384 | xfree (last_source_file); |
c906108c SS |
385 | last_source_file = savestring (name, strlen (name)); |
386 | current_source_start_addr = start_addr; | |
387 | current_source_end_addr = start_addr + size; | |
c906108c SS |
388 | } |
389 | ||
390 | /* Finish the symbol definitions for one main source file, | |
391 | close off all the lexical contexts for that file | |
392 | (creating struct block's for them), then make the | |
393 | struct symtab for that file and put it in the list of all such. */ | |
394 | ||
395 | static void | |
fba45db2 | 396 | coff_end_symtab (struct objfile *objfile) |
c906108c SS |
397 | { |
398 | struct symtab *symtab; | |
399 | ||
400 | last_source_start_addr = current_source_start_addr; | |
401 | ||
44c75fb3 | 402 | symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
403 | |
404 | if (symtab != NULL) | |
405 | free_named_symtabs (symtab->filename); | |
406 | ||
407 | /* Reinitialize for beginning of new file. */ | |
c906108c SS |
408 | last_source_file = NULL; |
409 | } | |
410 | \f | |
411 | static void | |
fba45db2 KB |
412 | record_minimal_symbol (char *name, CORE_ADDR address, |
413 | enum minimal_symbol_type type, struct objfile *objfile) | |
c906108c SS |
414 | { |
415 | /* We don't want TDESC entry points in the minimal symbol table */ | |
c5aa993b JM |
416 | if (name[0] == '@') |
417 | return; | |
c906108c SS |
418 | |
419 | prim_record_minimal_symbol (name, address, type, objfile); | |
420 | } | |
421 | \f | |
422 | /* coff_symfile_init () | |
423 | is the coff-specific initialization routine for reading symbols. | |
424 | It is passed a struct objfile which contains, among other things, | |
425 | the BFD for the file whose symbols are being read, and a slot for | |
426 | a pointer to "private data" which we fill with cookies and other | |
427 | treats for coff_symfile_read (). | |
428 | ||
429 | We will only be called if this is a COFF or COFF-like file. | |
430 | BFD handles figuring out the format of the file, and code in symtab.c | |
431 | uses BFD's determination to vector to us. | |
432 | ||
433 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
434 | ||
435 | static void | |
fba45db2 | 436 | coff_symfile_init (struct objfile *objfile) |
c906108c SS |
437 | { |
438 | /* Allocate struct to keep track of stab reading. */ | |
439 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
440 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); | |
441 | ||
12b9c64f AO |
442 | memset (objfile->sym_stab_info, 0, |
443 | sizeof (struct dbx_symfile_info)); | |
c906108c SS |
444 | |
445 | /* Allocate struct to keep track of the symfile */ | |
446 | objfile->sym_private = xmmalloc (objfile->md, | |
447 | sizeof (struct coff_symfile_info)); | |
448 | ||
449 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); | |
450 | ||
451 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
452 | find this causes a significant slowdown in gdb then we could | |
453 | set it in the debug symbol readers only when necessary. */ | |
454 | objfile->flags |= OBJF_REORDERED; | |
455 | ||
456 | init_entry_point_info (objfile); | |
457 | } | |
458 | ||
459 | /* This function is called for every section; it finds the outer limits | |
460 | of the line table (minimum and maximum file offset) so that the | |
461 | mainline code can read the whole thing for efficiency. */ | |
462 | ||
c906108c | 463 | static void |
7be0c536 | 464 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
465 | { |
466 | struct coff_symfile_info *info; | |
467 | int size, count; | |
468 | file_ptr offset, maxoff; | |
469 | ||
470 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
471 | count = asect->lineno_count; | |
472 | /* End of warning */ | |
473 | ||
474 | if (count == 0) | |
475 | return; | |
476 | size = count * local_linesz; | |
477 | ||
c5aa993b | 478 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
479 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
480 | offset = asect->line_filepos; | |
481 | /* End of warning */ | |
482 | ||
483 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
484 | info->min_lineno_offset = offset; | |
485 | ||
486 | maxoff = offset + size; | |
487 | if (maxoff > info->max_lineno_offset) | |
488 | info->max_lineno_offset = maxoff; | |
489 | } | |
490 | ||
491 | ||
492 | /* The BFD for this file -- only good while we're actively reading | |
493 | symbols into a psymtab or a symtab. */ | |
494 | ||
495 | static bfd *symfile_bfd; | |
496 | ||
497 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
498 | ||
c906108c | 499 | static void |
fba45db2 | 500 | coff_symfile_read (struct objfile *objfile, int mainline) |
c906108c SS |
501 | { |
502 | struct coff_symfile_info *info; | |
503 | struct dbx_symfile_info *dbxinfo; | |
504 | bfd *abfd = objfile->obfd; | |
505 | coff_data_type *cdata = coff_data (abfd); | |
506 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 507 | int val; |
745b8ca0 | 508 | unsigned int num_symbols; |
c906108c SS |
509 | int symtab_offset; |
510 | int stringtab_offset; | |
7134143f | 511 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 512 | int stabstrsize; |
c2d11a7d JM |
513 | int len; |
514 | char * target; | |
515 | ||
c5aa993b | 516 | info = (struct coff_symfile_info *) objfile->sym_private; |
c906108c | 517 | dbxinfo = objfile->sym_stab_info; |
c5aa993b | 518 | symfile_bfd = abfd; /* Kludge for swap routines */ |
c906108c SS |
519 | |
520 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
521 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
522 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
523 | stringtab_offset = symtab_offset + /* String table file offset */ | |
524 | num_symbols * cdata->local_symesz; | |
c906108c SS |
525 | |
526 | /* Set a few file-statics that give us specific information about | |
527 | the particular COFF file format we're reading. */ | |
c906108c SS |
528 | local_n_btmask = cdata->local_n_btmask; |
529 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 530 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 531 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
532 | local_linesz = cdata->local_linesz; |
533 | local_symesz = cdata->local_symesz; | |
534 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
535 | |
536 | /* Allocate space for raw symbol and aux entries, based on their | |
537 | space requirements as reported by BFD. */ | |
538 | temp_sym = (char *) xmalloc | |
c5aa993b | 539 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 540 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 541 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
542 | |
543 | /* We need to know whether this is a PE file, because in PE files, | |
544 | unlike standard COFF files, symbol values are stored as offsets | |
545 | from the section address, rather than as absolute addresses. | |
546 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
547 | this problem. */ | |
0d06e24b JM |
548 | pe_file = |
549 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
550 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c SS |
551 | |
552 | /* End of warning */ | |
553 | ||
c906108c SS |
554 | info->min_lineno_offset = 0; |
555 | info->max_lineno_offset = 0; | |
c906108c | 556 | |
ebeb39fe JB |
557 | /* Only read line number information if we have symbols. |
558 | ||
559 | On Windows NT, some of the system's DLL's have sections with | |
560 | PointerToLinenumbers fields that are non-zero, but point at | |
561 | random places within the image file. (In the case I found, | |
562 | KERNEL32.DLL's .text section has a line number info pointer that | |
563 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
564 | ||
565 | However, these DLL's also have no symbols. The line number | |
566 | tables are meaningless without symbols. And in fact, GDB never | |
567 | uses the line number information unless there are symbols. So we | |
568 | can avoid spurious error messages (and maybe run a little | |
569 | faster!) by not even reading the line number table unless we have | |
570 | symbols. */ | |
571 | if (num_symbols > 0) | |
572 | { | |
573 | /* Read the line number table, all at once. */ | |
574 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
575 | ||
576 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
577 | val = init_lineno (abfd, info->min_lineno_offset, | |
578 | info->max_lineno_offset - info->min_lineno_offset); | |
579 | if (val < 0) | |
580 | error ("\"%s\": error reading line numbers\n", name); | |
581 | } | |
c906108c SS |
582 | |
583 | /* Now read the string table, all at once. */ | |
584 | ||
74b7792f | 585 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
586 | val = init_stringtab (abfd, stringtab_offset); |
587 | if (val < 0) | |
588 | error ("\"%s\": can't get string table", name); | |
589 | ||
590 | init_minimal_symbol_collection (); | |
7134143f | 591 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
592 | |
593 | /* Now that the executable file is positioned at symbol table, | |
594 | process it and define symbols accordingly. */ | |
595 | ||
96baa820 | 596 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 597 | |
c906108c SS |
598 | /* Install any minimal symbols that have been collected as the current |
599 | minimal symbols for this objfile. */ | |
600 | ||
601 | install_minimal_symbols (objfile); | |
602 | ||
7134143f DJ |
603 | /* Free the installed minimal symbol data. */ |
604 | do_cleanups (cleanup_minimal_symbols); | |
605 | ||
12b9c64f | 606 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
607 | |
608 | if (info->stabsects) | |
609 | { | |
c5aa993b | 610 | if (!info->stabstrsect) |
b83266a0 | 611 | { |
255e7dbf AC |
612 | error (("The debugging information in `%s' is corrupted.\n" |
613 | "The file has a `.stabs' section, but no `.stabstr' " | |
614 | "section."), | |
615 | name); | |
b83266a0 SS |
616 | } |
617 | ||
c906108c | 618 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 619 | bfd_get_section_contents? */ |
c906108c SS |
620 | bfd_seek (abfd, abfd->where, 0); |
621 | ||
622 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
623 | ||
624 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
625 | mainline, |
626 | info->textaddr, info->textsize, | |
627 | info->stabsects, | |
628 | info->stabstrsect->filepos, stabstrsize); | |
629 | } | |
c5edf76a | 630 | if (dwarf2_has_info (objfile)) |
42a076f0 EZ |
631 | { |
632 | /* DWARF2 sections. */ | |
633 | dwarf2_build_psymtabs (objfile, mainline); | |
634 | } | |
c906108c SS |
635 | |
636 | do_cleanups (back_to); | |
637 | } | |
638 | ||
639 | static void | |
fba45db2 | 640 | coff_new_init (struct objfile *ignore) |
c906108c SS |
641 | { |
642 | } | |
643 | ||
644 | /* Perform any local cleanups required when we are done with a particular | |
645 | objfile. I.E, we are in the process of discarding all symbol information | |
646 | for an objfile, freeing up all memory held for it, and unlinking the | |
647 | objfile struct from the global list of known objfiles. */ | |
648 | ||
649 | static void | |
fba45db2 | 650 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 651 | { |
c5aa993b | 652 | if (objfile->sym_private != NULL) |
c906108c | 653 | { |
aac7f4ea | 654 | xmfree (objfile->md, objfile->sym_private); |
c906108c | 655 | } |
7be570e7 JM |
656 | |
657 | /* Let stabs reader clean up */ | |
658 | stabsread_clear_cache (); | |
c906108c | 659 | } |
c906108c | 660 | \f |
c5aa993b | 661 | |
c906108c SS |
662 | /* Given pointers to a symbol table in coff style exec file, |
663 | analyze them and create struct symtab's describing the symbols. | |
664 | NSYMS is the number of symbols in the symbol table. | |
665 | We read them one at a time using read_one_sym (). */ | |
666 | ||
667 | static void | |
fba45db2 KB |
668 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
669 | struct objfile *objfile) | |
c906108c | 670 | { |
52f0bd74 | 671 | struct context_stack *new; |
c906108c | 672 | struct coff_symbol coff_symbol; |
52f0bd74 | 673 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
674 | static struct internal_syment main_sym; |
675 | static union internal_auxent main_aux; | |
676 | struct coff_symbol fcn_cs_saved; | |
677 | static struct internal_syment fcn_sym_saved; | |
678 | static union internal_auxent fcn_aux_saved; | |
679 | struct symtab *s; | |
680 | /* A .file is open. */ | |
681 | int in_source_file = 0; | |
682 | int next_file_symnum = -1; | |
683 | /* Name of the current file. */ | |
684 | char *filestring = ""; | |
685 | int depth = 0; | |
686 | int fcn_first_line = 0; | |
b9179dbc | 687 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
688 | int fcn_last_line = 0; |
689 | int fcn_start_addr = 0; | |
690 | long fcn_line_ptr = 0; | |
691 | int val; | |
692 | CORE_ADDR tmpaddr; | |
693 | ||
694 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
695 | it's hard to know I've really worked around it. The fix should be | |
696 | harmless, anyway). The symptom of the bug is that the first | |
697 | fread (in read_one_sym), will (in my example) actually get data | |
698 | from file offset 268, when the fseek was to 264 (and ftell shows | |
699 | 264). This causes all hell to break loose. I was unable to | |
700 | reproduce this on a short test program which operated on the same | |
701 | file, performing (I think) the same sequence of operations. | |
702 | ||
703 | It stopped happening when I put in this (former) rewind(). | |
704 | ||
705 | FIXME: Find out if this has been reported to Sun, whether it has | |
706 | been fixed in a later release, etc. */ | |
707 | ||
708 | bfd_seek (objfile->obfd, 0, 0); | |
709 | ||
710 | /* Position to read the symbol table. */ | |
711 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); | |
712 | if (val < 0) | |
713 | perror_with_name (objfile->name); | |
714 | ||
715 | current_objfile = objfile; | |
716 | nlist_bfd_global = objfile->obfd; | |
717 | nlist_nsyms_global = nsyms; | |
718 | last_source_file = NULL; | |
719 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); | |
720 | ||
c5aa993b | 721 | if (type_vector) /* Get rid of previous one */ |
b8c9b27d | 722 | xfree (type_vector); |
c906108c SS |
723 | type_vector_length = 160; |
724 | type_vector = (struct type **) | |
725 | xmalloc (type_vector_length * sizeof (struct type *)); | |
726 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
727 | ||
728 | coff_start_symtab (""); | |
729 | ||
730 | symnum = 0; | |
731 | while (symnum < nsyms) | |
732 | { | |
733 | QUIT; /* Make this command interruptable. */ | |
734 | ||
735 | read_one_sym (cs, &main_sym, &main_aux); | |
736 | ||
737 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
738 | { | |
739 | if (last_source_file) | |
740 | coff_end_symtab (objfile); | |
741 | ||
742 | coff_start_symtab ("_globals_"); | |
743 | complete_symtab ("_globals_", 0, 0); | |
744 | /* done with all files, everything from here on out is globals */ | |
745 | } | |
746 | ||
747 | /* Special case for file with type declarations only, no text. */ | |
748 | if (!last_source_file && SDB_TYPE (cs->c_type) | |
749 | && cs->c_secnum == N_DEBUG) | |
750 | complete_symtab (filestring, 0, 0); | |
751 | ||
752 | /* Typedefs should not be treated as symbol definitions. */ | |
753 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
754 | { | |
755 | /* Record all functions -- external and static -- in minsyms. */ | |
b8fbeb18 | 756 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
757 | record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile); |
758 | ||
759 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
760 | fcn_start_addr = tmpaddr; | |
761 | fcn_cs_saved = *cs; | |
762 | fcn_sym_saved = main_sym; | |
763 | fcn_aux_saved = main_aux; | |
764 | continue; | |
765 | } | |
766 | ||
767 | switch (cs->c_sclass) | |
768 | { | |
c5aa993b JM |
769 | case C_EFCN: |
770 | case C_EXTDEF: | |
771 | case C_ULABEL: | |
772 | case C_USTATIC: | |
773 | case C_LINE: | |
774 | case C_ALIAS: | |
775 | case C_HIDDEN: | |
23136709 KB |
776 | complaint (&symfile_complaints, "Bad n_sclass for symbol %s", |
777 | cs->c_name); | |
c5aa993b | 778 | break; |
c906108c | 779 | |
c5aa993b JM |
780 | case C_FILE: |
781 | /* c_value field contains symnum of next .file entry in table | |
782 | or symnum of first global after last .file. */ | |
783 | next_file_symnum = cs->c_value; | |
784 | if (cs->c_naux > 0) | |
785 | filestring = coff_getfilename (&main_aux); | |
786 | else | |
787 | filestring = ""; | |
788 | ||
789 | /* Complete symbol table for last object file | |
790 | containing debugging information. */ | |
791 | if (last_source_file) | |
792 | { | |
793 | coff_end_symtab (objfile); | |
794 | coff_start_symtab (filestring); | |
795 | } | |
796 | in_source_file = 1; | |
797 | break; | |
c906108c SS |
798 | |
799 | /* C_LABEL is used for labels and static functions. Including | |
800 | it here allows gdb to see static functions when no debug | |
801 | info is available. */ | |
c5aa993b JM |
802 | case C_LABEL: |
803 | /* However, labels within a function can make weird backtraces, | |
804 | so filter them out (from phdm@macqel.be). */ | |
805 | if (within_function) | |
806 | break; | |
807 | case C_STAT: | |
808 | case C_THUMBLABEL: | |
809 | case C_THUMBSTAT: | |
810 | case C_THUMBSTATFUNC: | |
811 | if (cs->c_name[0] == '.') | |
812 | { | |
cb137aa5 | 813 | if (DEPRECATED_STREQ (cs->c_name, ".text")) |
c5aa993b | 814 | { |
c906108c SS |
815 | /* FIXME: don't wire in ".text" as section name |
816 | or symbol name! */ | |
817 | /* Check for in_source_file deals with case of | |
818 | a file with debugging symbols | |
819 | followed by a later file with no symbols. */ | |
820 | if (in_source_file) | |
821 | complete_symtab (filestring, | |
b8fbeb18 | 822 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c SS |
823 | main_aux.x_scn.x_scnlen); |
824 | in_source_file = 0; | |
825 | } | |
c5aa993b | 826 | /* flush rest of '.' symbols */ |
c906108c | 827 | break; |
c5aa993b JM |
828 | } |
829 | else if (!SDB_TYPE (cs->c_type) | |
830 | && cs->c_name[0] == 'L' | |
831 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
832 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
833 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
834 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
835 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
836 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
837 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
838 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
839 | /* At least on a 3b1, gcc generates swbeg and string labels | |
840 | that look like this. Ignore them. */ | |
841 | break; | |
842 | /* fall in for static symbols that don't start with '.' */ | |
843 | case C_THUMBEXT: | |
844 | case C_THUMBEXTFUNC: | |
845 | case C_EXT: | |
846 | { | |
847 | /* Record it in the minimal symbols regardless of | |
848 | SDB_TYPE. This parallels what we do for other debug | |
849 | formats, and probably is needed to make | |
850 | print_address_symbolic work right without the (now | |
851 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 852 | |
c5aa993b JM |
853 | enum minimal_symbol_type ms_type; |
854 | int sec; | |
c906108c | 855 | |
c5aa993b JM |
856 | if (cs->c_secnum == N_UNDEF) |
857 | { | |
858 | /* This is a common symbol. See if the target | |
859 | environment knows where it has been relocated to. */ | |
860 | CORE_ADDR reladdr; | |
861 | if (target_lookup_symbol (cs->c_name, &reladdr)) | |
862 | { | |
863 | /* Error in lookup; ignore symbol. */ | |
864 | break; | |
865 | } | |
866 | tmpaddr = reladdr; | |
867 | /* The address has already been relocated; make sure that | |
868 | objfile_relocate doesn't relocate it again. */ | |
869 | sec = -2; | |
870 | ms_type = cs->c_sclass == C_EXT | |
871 | || cs->c_sclass == C_THUMBEXT ? | |
872 | mst_bss : mst_file_bss; | |
873 | } | |
182d43bc EZ |
874 | else if (cs->c_secnum == N_ABS) |
875 | { | |
876 | /* Use the correct minimal symbol type (and don't | |
877 | relocate) for absolute values. */ | |
878 | ms_type = mst_abs; | |
879 | sec = cs_to_section (cs, objfile); | |
880 | tmpaddr = cs->c_value; | |
881 | } | |
c5aa993b JM |
882 | else |
883 | { | |
884 | sec = cs_to_section (cs, objfile); | |
885 | tmpaddr = cs->c_value; | |
182d43bc EZ |
886 | /* Statics in a PE file also get relocated */ |
887 | if (cs->c_sclass == C_EXT | |
888 | || cs->c_sclass == C_THUMBEXTFUNC | |
889 | || cs->c_sclass == C_THUMBEXT | |
890 | || (pe_file && (cs->c_sclass == C_STAT))) | |
96baa820 | 891 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 892 | |
2ec466f9 | 893 | if (sec == SECT_OFF_TEXT (objfile)) |
c5aa993b | 894 | { |
c5aa993b JM |
895 | ms_type = |
896 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
897 | || cs->c_sclass == C_THUMBEXT ? | |
898 | mst_text : mst_file_text; | |
181c1381 | 899 | tmpaddr = SMASH_TEXT_ADDRESS (tmpaddr); |
b8fbeb18 | 900 | } |
34e924c0 EZ |
901 | else if (sec == SECT_OFF_DATA (objfile)) |
902 | { | |
c5aa993b JM |
903 | ms_type = |
904 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
905 | mst_data : mst_file_data; | |
34e924c0 EZ |
906 | } |
907 | else if (sec == SECT_OFF_BSS (objfile)) | |
908 | { | |
c5aa993b JM |
909 | ms_type = |
910 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? | |
911 | mst_data : mst_file_data; | |
34e924c0 EZ |
912 | } |
913 | else | |
914 | ms_type = mst_unknown; | |
c5aa993b | 915 | } |
c906108c | 916 | |
c5aa993b JM |
917 | if (cs->c_name[0] != '@' /* Skip tdesc symbols */ ) |
918 | { | |
919 | struct minimal_symbol *msym; | |
c5aa993b | 920 | msym = prim_record_minimal_symbol_and_info |
29e0a062 | 921 | (cs->c_name, tmpaddr, ms_type, NULL, |
6ec4c4bd | 922 | sec, NULL, objfile); |
c5aa993b JM |
923 | if (msym) |
924 | COFF_MAKE_MSYMBOL_SPECIAL (cs->c_sclass, msym); | |
c5aa993b JM |
925 | } |
926 | if (SDB_TYPE (cs->c_type)) | |
927 | { | |
928 | struct symbol *sym; | |
929 | sym = process_coff_symbol | |
96baa820 | 930 | (cs, &main_aux, objfile); |
c5aa993b JM |
931 | SYMBOL_VALUE (sym) = tmpaddr; |
932 | SYMBOL_SECTION (sym) = sec; | |
933 | } | |
934 | } | |
935 | break; | |
936 | ||
937 | case C_FCN: | |
cb137aa5 | 938 | if (DEPRECATED_STREQ (cs->c_name, ".bf")) |
c5aa993b JM |
939 | { |
940 | within_function = 1; | |
941 | ||
942 | /* value contains address of first non-init type code */ | |
943 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
944 | contains line number of '{' } */ | |
945 | if (cs->c_naux != 1) | |
23136709 KB |
946 | complaint (&symfile_complaints, |
947 | "`.bf' symbol %d has no aux entry", cs->c_symnum); | |
c5aa993b JM |
948 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
949 | fcn_first_line_addr = cs->c_value; | |
950 | ||
951 | /* Might want to check that locals are 0 and | |
952 | context_stack_depth is zero, and complain if not. */ | |
953 | ||
954 | depth = 0; | |
955 | new = push_context (depth, fcn_start_addr); | |
956 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
957 | new->name = | |
96baa820 | 958 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); |
c5aa993b | 959 | } |
cb137aa5 | 960 | else if (DEPRECATED_STREQ (cs->c_name, ".ef")) |
c5aa993b | 961 | { |
b9179dbc EZ |
962 | if (!within_function) |
963 | error ("Bad coff function information\n"); | |
c5aa993b JM |
964 | /* the value of .ef is the address of epilogue code; |
965 | not useful for gdb. */ | |
966 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
967 | contains number of lines to '}' */ | |
968 | ||
969 | if (context_stack_depth <= 0) | |
970 | { /* We attempted to pop an empty context stack */ | |
23136709 KB |
971 | complaint (&symfile_complaints, |
972 | "`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d", | |
973 | cs->c_symnum); | |
c5aa993b JM |
974 | within_function = 0; |
975 | break; | |
c906108c | 976 | } |
c5aa993b JM |
977 | |
978 | new = pop_context (); | |
979 | /* Stack must be empty now. */ | |
980 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 981 | { |
23136709 KB |
982 | complaint (&symfile_complaints, |
983 | "Unmatched .ef symbol(s) ignored starting at symnum %d", | |
984 | cs->c_symnum); | |
c5aa993b JM |
985 | within_function = 0; |
986 | break; | |
c906108c | 987 | } |
c5aa993b JM |
988 | if (cs->c_naux != 1) |
989 | { | |
23136709 KB |
990 | complaint (&symfile_complaints, |
991 | "`.ef' symbol %d has no aux entry", cs->c_symnum); | |
c5aa993b JM |
992 | fcn_last_line = 0x7FFFFFFF; |
993 | } | |
994 | else | |
995 | { | |
996 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
997 | } | |
998 | /* fcn_first_line is the line number of the opening '{'. | |
999 | Do not record it - because it would affect gdb's idea | |
1000 | of the line number of the first statement of the function - | |
1001 | except for one-line functions, for which it is also the line | |
1002 | number of all the statements and of the closing '}', and | |
1003 | for which we do not have any other statement-line-number. */ | |
1004 | if (fcn_last_line == 1) | |
1005 | record_line (current_subfile, fcn_first_line, | |
1006 | fcn_first_line_addr); | |
1007 | else | |
1008 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, | |
d4f3574e | 1009 | objfile); |
c906108c | 1010 | |
c5aa993b JM |
1011 | finish_block (new->name, &local_symbols, new->old_blocks, |
1012 | new->start_addr, | |
c906108c | 1013 | #if defined (FUNCTION_EPILOGUE_SIZE) |
c5aa993b JM |
1014 | /* This macro should be defined only on |
1015 | machines where the | |
1016 | fcn_aux_saved.x_sym.x_misc.x_fsize | |
1017 | field is always zero. | |
1018 | So use the .bf record information that | |
1019 | points to the epilogue and add the size | |
1020 | of the epilogue. */ | |
1021 | cs->c_value | |
1022 | + FUNCTION_EPILOGUE_SIZE | |
b8fbeb18 | 1023 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1024 | #else |
c5aa993b JM |
1025 | fcn_cs_saved.c_value |
1026 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b8fbeb18 | 1027 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), |
c906108c | 1028 | #endif |
c5aa993b JM |
1029 | objfile |
1030 | ); | |
1031 | within_function = 0; | |
1032 | } | |
1033 | break; | |
c906108c | 1034 | |
c5aa993b | 1035 | case C_BLOCK: |
cb137aa5 | 1036 | if (DEPRECATED_STREQ (cs->c_name, ".bb")) |
c5aa993b JM |
1037 | { |
1038 | tmpaddr = cs->c_value; | |
b8fbeb18 | 1039 | tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1040 | push_context (++depth, tmpaddr); |
1041 | } | |
cb137aa5 | 1042 | else if (DEPRECATED_STREQ (cs->c_name, ".eb")) |
c5aa993b JM |
1043 | { |
1044 | if (context_stack_depth <= 0) | |
1045 | { /* We attempted to pop an empty context stack */ | |
23136709 KB |
1046 | complaint (&symfile_complaints, |
1047 | "`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d", | |
1048 | cs->c_symnum); | |
c5aa993b JM |
1049 | break; |
1050 | } | |
c906108c | 1051 | |
c5aa993b JM |
1052 | new = pop_context (); |
1053 | if (depth-- != new->depth) | |
1054 | { | |
23136709 KB |
1055 | complaint (&symfile_complaints, |
1056 | "Mismatched .eb symbol ignored starting at symnum %d", | |
1057 | symnum); | |
c5aa993b JM |
1058 | break; |
1059 | } | |
1060 | if (local_symbols && context_stack_depth > 0) | |
1061 | { | |
1062 | tmpaddr = | |
b8fbeb18 | 1063 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1064 | /* Make a block for the local symbols within. */ |
1065 | finish_block (0, &local_symbols, new->old_blocks, | |
1066 | new->start_addr, tmpaddr, objfile); | |
1067 | } | |
1068 | /* Now pop locals of block just finished. */ | |
1069 | local_symbols = new->locals; | |
1070 | } | |
1071 | break; | |
c906108c | 1072 | |
c5aa993b | 1073 | default: |
96baa820 | 1074 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1075 | break; |
c906108c SS |
1076 | } |
1077 | } | |
1078 | ||
1b6bc7e0 CF |
1079 | if ((nsyms == 0) && (pe_file)) |
1080 | { | |
1081 | /* We've got no debugging symbols, but it's is a portable | |
1082 | executable, so try to read the export table */ | |
1083 | read_pe_exported_syms (objfile); | |
1084 | } | |
1085 | ||
c906108c SS |
1086 | if (last_source_file) |
1087 | coff_end_symtab (objfile); | |
1088 | ||
1089 | /* Patch up any opaque types (references to types that are not defined | |
1090 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1091 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1092 | patch_opaque_types (s); | |
1093 | ||
1094 | current_objfile = NULL; | |
1095 | } | |
1096 | \f | |
1097 | /* Routines for reading headers and symbols from executable. */ | |
1098 | ||
1099 | /* Read the next symbol, swap it, and return it in both internal_syment | |
1100 | form, and coff_symbol form. Also return its first auxent, if any, | |
1101 | in internal_auxent form, and skip any other auxents. */ | |
1102 | ||
1103 | static void | |
aa1ee363 AC |
1104 | read_one_sym (struct coff_symbol *cs, |
1105 | struct internal_syment *sym, | |
1106 | union internal_auxent *aux) | |
c906108c SS |
1107 | { |
1108 | int i; | |
1109 | ||
1110 | cs->c_symnum = symnum; | |
3a42e9d0 | 1111 | bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
c5aa993b | 1112 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1113 | cs->c_naux = sym->n_numaux & 0xff; |
1114 | if (cs->c_naux >= 1) | |
1115 | { | |
3a42e9d0 | 1116 | bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
c5aa993b JM |
1117 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, |
1118 | 0, cs->c_naux, (char *) aux); | |
1119 | /* If more than one aux entry, read past it (only the first aux | |
1120 | is important). */ | |
1121 | for (i = 1; i < cs->c_naux; i++) | |
3a42e9d0 | 1122 | bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
c906108c SS |
1123 | } |
1124 | cs->c_name = getsymname (sym); | |
1125 | cs->c_value = sym->n_value; | |
1126 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1127 | cs->c_secnum = sym->n_scnum; | |
1128 | cs->c_type = (unsigned) sym->n_type; | |
1129 | if (!SDB_TYPE (cs->c_type)) | |
1130 | cs->c_type = 0; | |
1131 | ||
1132 | #if 0 | |
1133 | if (cs->c_sclass & 128) | |
c5aa993b | 1134 | printf ("thumb symbol %s, class 0x%x\n", cs->c_name, cs->c_sclass); |
c906108c SS |
1135 | #endif |
1136 | ||
1137 | symnum += 1 + cs->c_naux; | |
1138 | ||
1139 | /* The PE file format stores symbol values as offsets within the | |
1140 | section, rather than as absolute addresses. We correct that | |
1141 | here, if the symbol has an appropriate storage class. FIXME: We | |
1142 | should use BFD to read the symbols, rather than duplicating the | |
1143 | work here. */ | |
1144 | if (pe_file) | |
1145 | { | |
1146 | switch (cs->c_sclass) | |
1147 | { | |
1148 | case C_EXT: | |
1149 | case C_THUMBEXT: | |
1150 | case C_THUMBEXTFUNC: | |
1151 | case C_SECTION: | |
1152 | case C_NT_WEAK: | |
1153 | case C_STAT: | |
1154 | case C_THUMBSTAT: | |
1155 | case C_THUMBSTATFUNC: | |
1156 | case C_LABEL: | |
1157 | case C_THUMBLABEL: | |
1158 | case C_BLOCK: | |
1159 | case C_FCN: | |
1160 | case C_EFCN: | |
1161 | if (cs->c_secnum != 0) | |
1162 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | \f | |
1168 | /* Support for string table handling */ | |
1169 | ||
1170 | static char *stringtab = NULL; | |
1171 | ||
1172 | static int | |
fba45db2 | 1173 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1174 | { |
1175 | long length; | |
1176 | int val; | |
1177 | unsigned char lengthbuf[4]; | |
1178 | ||
1179 | free_stringtab (); | |
1180 | ||
1181 | /* If the file is stripped, the offset might be zero, indicating no | |
1182 | string table. Just return with `stringtab' set to null. */ | |
1183 | if (offset == 0) | |
1184 | return 0; | |
1185 | ||
1186 | if (bfd_seek (abfd, offset, 0) < 0) | |
1187 | return -1; | |
1188 | ||
3a42e9d0 | 1189 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1190 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1191 | |
c906108c SS |
1192 | /* If no string table is needed, then the file may end immediately |
1193 | after the symbols. Just return with `stringtab' set to null. */ | |
1194 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1195 | return 0; | |
1196 | ||
1197 | stringtab = (char *) xmalloc (length); | |
1198 | /* This is in target format (probably not very useful, and not currently | |
1199 | used), not host format. */ | |
1200 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); | |
c5aa993b | 1201 | if (length == sizeof length) /* Empty table -- just the count */ |
c906108c SS |
1202 | return 0; |
1203 | ||
3a42e9d0 AM |
1204 | val = bfd_bread (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, |
1205 | abfd); | |
c906108c SS |
1206 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1207 | return -1; | |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | static void | |
fba45db2 | 1213 | free_stringtab (void) |
c906108c SS |
1214 | { |
1215 | if (stringtab) | |
b8c9b27d | 1216 | xfree (stringtab); |
c906108c SS |
1217 | stringtab = NULL; |
1218 | } | |
1219 | ||
74b7792f AC |
1220 | static void |
1221 | free_stringtab_cleanup (void *ignore) | |
1222 | { | |
1223 | free_stringtab (); | |
1224 | } | |
1225 | ||
c906108c | 1226 | static char * |
fba45db2 | 1227 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1228 | { |
c5aa993b | 1229 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1230 | char *result; |
1231 | ||
1232 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1233 | { | |
1234 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1235 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1236 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1237 | } | |
1238 | else | |
1239 | { | |
1240 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1241 | buffer[SYMNMLEN] = '\0'; | |
1242 | result = buffer; | |
1243 | } | |
1244 | return result; | |
1245 | } | |
1246 | ||
1247 | /* Extract the file name from the aux entry of a C_FILE symbol. Return | |
1248 | only the last component of the name. Result is in static storage and | |
1249 | is only good for temporary use. */ | |
1250 | ||
1251 | static char * | |
fba45db2 | 1252 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1253 | { |
1254 | static char buffer[BUFSIZ]; | |
52f0bd74 | 1255 | char *temp; |
c906108c SS |
1256 | char *result; |
1257 | ||
1258 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1259 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1260 | else | |
1261 | { | |
1262 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1263 | buffer[FILNMLEN] = '\0'; | |
1264 | } | |
1265 | result = buffer; | |
1266 | ||
1267 | /* FIXME: We should not be throwing away the information about what | |
1268 | directory. It should go into dirname of the symtab, or some such | |
1269 | place. */ | |
1270 | if ((temp = strrchr (result, '/')) != NULL) | |
1271 | result = temp + 1; | |
1272 | return (result); | |
1273 | } | |
1274 | \f | |
1275 | /* Support for line number handling. */ | |
1276 | ||
1277 | static char *linetab = NULL; | |
1278 | static long linetab_offset; | |
1279 | static unsigned long linetab_size; | |
1280 | ||
1281 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1282 | external (unswapped) format in memory; we'll swap them as we enter | |
1283 | them into GDB's data structures. */ | |
c5aa993b | 1284 | |
c906108c | 1285 | static int |
fba45db2 | 1286 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1287 | { |
1288 | int val; | |
1289 | ||
1290 | linetab_offset = offset; | |
1291 | linetab_size = size; | |
1292 | ||
c5aa993b | 1293 | free_linetab (); |
c906108c SS |
1294 | |
1295 | if (size == 0) | |
1296 | return 0; | |
1297 | ||
1298 | if (bfd_seek (abfd, offset, 0) < 0) | |
1299 | return -1; | |
c5aa993b | 1300 | |
c906108c SS |
1301 | /* Allocate the desired table, plus a sentinel */ |
1302 | linetab = (char *) xmalloc (size + local_linesz); | |
1303 | ||
3a42e9d0 | 1304 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1305 | if (val != size) |
1306 | return -1; | |
1307 | ||
1308 | /* Terminate it with an all-zero sentinel record */ | |
1309 | memset (linetab + size, 0, local_linesz); | |
1310 | ||
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | static void | |
fba45db2 | 1315 | free_linetab (void) |
c906108c SS |
1316 | { |
1317 | if (linetab) | |
b8c9b27d | 1318 | xfree (linetab); |
c906108c SS |
1319 | linetab = NULL; |
1320 | } | |
1321 | ||
74b7792f AC |
1322 | static void |
1323 | free_linetab_cleanup (void *ignore) | |
1324 | { | |
1325 | free_linetab (); | |
1326 | } | |
1327 | ||
c906108c SS |
1328 | #if !defined (L_LNNO32) |
1329 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1330 | #endif | |
1331 | ||
1332 | static void | |
aa1ee363 AC |
1333 | enter_linenos (long file_offset, int first_line, |
1334 | int last_line, struct objfile *objfile) | |
c906108c | 1335 | { |
52f0bd74 | 1336 | char *rawptr; |
c906108c SS |
1337 | struct internal_lineno lptr; |
1338 | ||
1339 | if (!linetab) | |
c5aa993b | 1340 | return; |
c906108c SS |
1341 | if (file_offset < linetab_offset) |
1342 | { | |
23136709 KB |
1343 | complaint (&symfile_complaints, |
1344 | "Line number pointer %ld lower than start of line numbers", | |
1345 | file_offset); | |
c906108c SS |
1346 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1347 | return; | |
c5aa993b | 1348 | file_offset += linetab_offset; /* Try reading at that linetab offset */ |
c906108c | 1349 | } |
c5aa993b | 1350 | |
c906108c SS |
1351 | rawptr = &linetab[file_offset - linetab_offset]; |
1352 | ||
1353 | /* skip first line entry for each function */ | |
1354 | rawptr += local_linesz; | |
1355 | /* line numbers start at one for the first line of the function */ | |
1356 | first_line--; | |
1357 | ||
e6a8a7d2 EZ |
1358 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1359 | info), the next function's L_LNNO32 might not be zero, so don't | |
1360 | overstep the table's end in any case. */ | |
1361 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1362 | { |
1363 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1364 | rawptr += local_linesz; | |
e6a8a7d2 EZ |
1365 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
1366 | we exit. */ | |
c5aa993b JM |
1367 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
1368 | record_line (current_subfile, first_line + L_LNNO32 (&lptr), | |
1369 | lptr.l_addr.l_paddr | |
b8fbeb18 | 1370 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1371 | else |
1372 | break; | |
1373 | } | |
c906108c SS |
1374 | } |
1375 | \f | |
1376 | static void | |
fba45db2 | 1377 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1378 | { |
52f0bd74 AC |
1379 | struct type *target = TYPE_TARGET_TYPE (type); |
1380 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1381 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1382 | ||
1383 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1384 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
1385 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); | |
1386 | ||
1387 | memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); | |
1388 | ||
1389 | if (TYPE_NAME (real_target)) | |
1390 | { | |
1391 | if (TYPE_NAME (target)) | |
b8c9b27d | 1392 | xfree (TYPE_NAME (target)); |
c906108c SS |
1393 | TYPE_NAME (target) = concat (TYPE_NAME (real_target), NULL); |
1394 | } | |
1395 | } | |
1396 | ||
1397 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
1398 | so that they can be used to print out opaque data structures properly. */ | |
1399 | ||
1400 | static void | |
fba45db2 | 1401 | patch_opaque_types (struct symtab *s) |
c906108c | 1402 | { |
52f0bd74 | 1403 | struct block *b; |
de4f826b | 1404 | struct dict_iterator iter; |
52f0bd74 | 1405 | struct symbol *real_sym; |
c5aa993b | 1406 | |
c906108c SS |
1407 | /* Go through the per-file symbols only */ |
1408 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 1409 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1410 | { |
1411 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1412 | Remove syms from the chain when their types are stored, |
1413 | but search the whole chain, as there may be several syms | |
1414 | from different files with the same name. */ | |
c906108c | 1415 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF && |
176620f1 | 1416 | SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN && |
c906108c SS |
1417 | TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR && |
1418 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
1419 | { | |
aa1ee363 AC |
1420 | char *name = DEPRECATED_SYMBOL_NAME (real_sym); |
1421 | int hash = hashname (name); | |
1422 | struct symbol *sym, *prev; | |
c5aa993b | 1423 | |
c906108c SS |
1424 | prev = 0; |
1425 | for (sym = opaque_type_chain[hash]; sym;) | |
1426 | { | |
22abf04a | 1427 | if (name[0] == DEPRECATED_SYMBOL_NAME (sym)[0] && |
6314a349 | 1428 | strcmp (name + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0) |
c906108c SS |
1429 | { |
1430 | if (prev) | |
1431 | { | |
1432 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1433 | } | |
1434 | else | |
1435 | { | |
1436 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1437 | } | |
c5aa993b | 1438 | |
c906108c | 1439 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1440 | |
c906108c SS |
1441 | if (prev) |
1442 | { | |
1443 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1444 | } | |
1445 | else | |
1446 | { | |
1447 | sym = opaque_type_chain[hash]; | |
1448 | } | |
1449 | } | |
1450 | else | |
1451 | { | |
1452 | prev = sym; | |
1453 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | } | |
1458 | } | |
1459 | \f | |
1460 | static struct symbol * | |
aa1ee363 AC |
1461 | process_coff_symbol (struct coff_symbol *cs, |
1462 | union internal_auxent *aux, | |
fba45db2 | 1463 | struct objfile *objfile) |
c906108c | 1464 | { |
52f0bd74 | 1465 | struct symbol *sym |
4a146b47 | 1466 | = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 1467 | sizeof (struct symbol)); |
c906108c SS |
1468 | char *name; |
1469 | ||
1470 | memset (sym, 0, sizeof (struct symbol)); | |
1471 | name = cs->c_name; | |
1472 | name = EXTERNAL_NAME (name, objfile->obfd); | |
c906108c | 1473 | SYMBOL_LANGUAGE (sym) = language_auto; |
2de7ced7 | 1474 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
1475 | |
1476 | /* default assumptions */ | |
1477 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1478 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1479 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1480 | ||
1481 | if (ISFCN (cs->c_type)) | |
1482 | { | |
b8fbeb18 | 1483 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1484 | SYMBOL_TYPE (sym) = |
1485 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); | |
c906108c SS |
1486 | |
1487 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1488 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT | |
1489 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1490 | add_symbol_to_list (sym, &file_symbols); | |
1491 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1492 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1493 | add_symbol_to_list (sym, &global_symbols); | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux); | |
1498 | switch (cs->c_sclass) | |
1499 | { | |
c5aa993b JM |
1500 | case C_NULL: |
1501 | break; | |
c906108c | 1502 | |
c5aa993b JM |
1503 | case C_AUTO: |
1504 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1505 | add_symbol_to_list (sym, &local_symbols); | |
1506 | break; | |
c906108c | 1507 | |
c5aa993b JM |
1508 | case C_THUMBEXT: |
1509 | case C_THUMBEXTFUNC: | |
1510 | case C_EXT: | |
1511 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1512 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1513 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1514 | add_symbol_to_list (sym, &global_symbols); |
1515 | break; | |
c906108c | 1516 | |
c5aa993b JM |
1517 | case C_THUMBSTAT: |
1518 | case C_THUMBSTATFUNC: | |
1519 | case C_STAT: | |
1520 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1521 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
b8fbeb18 | 1522 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1523 | if (within_function) |
1524 | { | |
c906108c SS |
1525 | /* Static symbol of local scope */ |
1526 | add_symbol_to_list (sym, &local_symbols); | |
1527 | } | |
c5aa993b JM |
1528 | else |
1529 | { | |
c906108c SS |
1530 | /* Static symbol at top level of file */ |
1531 | add_symbol_to_list (sym, &file_symbols); | |
1532 | } | |
c5aa993b | 1533 | break; |
c906108c SS |
1534 | |
1535 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1536 | case C_GLBLREG: |
c906108c | 1537 | #endif |
c5aa993b JM |
1538 | case C_REG: |
1539 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1540 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM (cs->c_value); | |
1541 | add_symbol_to_list (sym, &local_symbols); | |
1542 | break; | |
c906108c | 1543 | |
c5aa993b JM |
1544 | case C_THUMBLABEL: |
1545 | case C_LABEL: | |
1546 | break; | |
c906108c | 1547 | |
c5aa993b JM |
1548 | case C_ARG: |
1549 | SYMBOL_CLASS (sym) = LOC_ARG; | |
1550 | add_symbol_to_list (sym, &local_symbols); | |
c906108c | 1551 | #if !defined (BELIEVE_PCC_PROMOTION) |
d7449b42 | 1552 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c5aa993b JM |
1553 | { |
1554 | /* If PCC says a parameter is a short or a char, | |
1555 | aligned on an int boundary, realign it to the | |
1556 | "little end" of the int. */ | |
1557 | struct type *temptype; | |
1558 | temptype = lookup_fundamental_type (current_objfile, | |
1559 | FT_INTEGER); | |
1560 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1561 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
1562 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
1563 | { | |
1564 | SYMBOL_VALUE (sym) += | |
1565 | TYPE_LENGTH (temptype) | |
1566 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1567 | } | |
1568 | } | |
c906108c | 1569 | #endif |
c5aa993b | 1570 | break; |
c906108c | 1571 | |
c5aa993b JM |
1572 | case C_REGPARM: |
1573 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
1574 | SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM (cs->c_value); | |
1575 | add_symbol_to_list (sym, &local_symbols); | |
c906108c | 1576 | #if !defined (BELIEVE_PCC_PROMOTION) |
c5aa993b JM |
1577 | /* FIXME: This should retain the current type, since it's just |
1578 | a register value. gnu@adobe, 26Feb93 */ | |
1579 | { | |
1580 | /* If PCC says a parameter is a short or a char, | |
1581 | it is really an int. */ | |
1582 | struct type *temptype; | |
1583 | temptype = | |
1584 | lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1585 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1586 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
c906108c | 1587 | { |
c5aa993b JM |
1588 | SYMBOL_TYPE (sym) = |
1589 | (TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1590 | ? lookup_fundamental_type (current_objfile, | |
1591 | FT_UNSIGNED_INTEGER) | |
1592 | : temptype); | |
c906108c | 1593 | } |
c5aa993b | 1594 | } |
c906108c | 1595 | #endif |
c5aa993b | 1596 | break; |
c906108c | 1597 | |
c5aa993b JM |
1598 | case C_TPDEF: |
1599 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1600 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
1601 | |
1602 | /* If type has no name, give it one */ | |
1603 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
1604 | { | |
1605 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1606 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1607 | { | |
1608 | /* If we are giving a name to a type such as "pointer to | |
1609 | foo" or "function returning foo", we better not set | |
1610 | the TYPE_NAME. If the program contains "typedef char | |
1611 | *caddr_t;", we don't want all variables of type char | |
1612 | * to print as caddr_t. This is not just a | |
1613 | consequence of GDB's type management; CC and GCC (at | |
1614 | least through version 2.4) both output variables of | |
1615 | either type char * or caddr_t with the type | |
1616 | refering to the C_TPDEF symbol for caddr_t. If a future | |
1617 | compiler cleans this up it GDB is not ready for it | |
1618 | yet, but if it becomes ready we somehow need to | |
1619 | disable this check (without breaking the PCC/GCC2.4 | |
1620 | case). | |
1621 | ||
1622 | Sigh. | |
1623 | ||
1624 | Fortunately, this check seems not to be necessary | |
1625 | for anything except pointers or functions. */ | |
1626 | ; | |
1627 | } | |
1628 | else | |
1629 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
22abf04a | 1630 | concat (DEPRECATED_SYMBOL_NAME (sym), NULL); |
c5aa993b | 1631 | } |
c906108c | 1632 | |
c5aa993b JM |
1633 | /* Keep track of any type which points to empty structured type, |
1634 | so it can be filled from a definition from another file. A | |
1635 | simple forward reference (TYPE_CODE_UNDEF) is not an | |
1636 | empty structured type, though; the forward references | |
1637 | work themselves out via the magic of coff_lookup_type. */ | |
1638 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && | |
1639 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && | |
1640 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) != | |
1641 | TYPE_CODE_UNDEF) | |
1642 | { | |
aa1ee363 | 1643 | int i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c906108c | 1644 | |
c5aa993b JM |
1645 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1646 | opaque_type_chain[i] = sym; | |
1647 | } | |
1648 | add_symbol_to_list (sym, &file_symbols); | |
1649 | break; | |
c906108c | 1650 | |
c5aa993b JM |
1651 | case C_STRTAG: |
1652 | case C_UNTAG: | |
1653 | case C_ENTAG: | |
1654 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1655 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1656 | |
1657 | /* Some compilers try to be helpful by inventing "fake" | |
1658 | names for anonymous enums, structures, and unions, like | |
1659 | "~0fake" or ".0fake". Thanks, but no thanks... */ | |
1660 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) | |
22abf04a DC |
1661 | if (DEPRECATED_SYMBOL_NAME (sym) != NULL |
1662 | && *DEPRECATED_SYMBOL_NAME (sym) != '~' | |
1663 | && *DEPRECATED_SYMBOL_NAME (sym) != '.') | |
c5aa993b | 1664 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
22abf04a | 1665 | concat (DEPRECATED_SYMBOL_NAME (sym), NULL); |
c5aa993b JM |
1666 | |
1667 | add_symbol_to_list (sym, &file_symbols); | |
1668 | break; | |
c906108c | 1669 | |
c5aa993b JM |
1670 | default: |
1671 | break; | |
c906108c SS |
1672 | } |
1673 | } | |
1674 | return sym; | |
1675 | } | |
1676 | \f | |
1677 | /* Decode a coff type specifier; return the type that is meant. */ | |
1678 | ||
1679 | static struct type * | |
aa1ee363 AC |
1680 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
1681 | union internal_auxent *aux) | |
c906108c | 1682 | { |
52f0bd74 | 1683 | struct type *type = 0; |
c906108c SS |
1684 | unsigned int new_c_type; |
1685 | ||
1686 | if (c_type & ~N_BTMASK) | |
1687 | { | |
1688 | new_c_type = DECREF (c_type); | |
1689 | if (ISPTR (c_type)) | |
1690 | { | |
1691 | type = decode_type (cs, new_c_type, aux); | |
1692 | type = lookup_pointer_type (type); | |
1693 | } | |
1694 | else if (ISFCN (c_type)) | |
1695 | { | |
1696 | type = decode_type (cs, new_c_type, aux); | |
1697 | type = lookup_function_type (type); | |
1698 | } | |
1699 | else if (ISARY (c_type)) | |
1700 | { | |
1701 | int i, n; | |
aa1ee363 | 1702 | unsigned short *dim; |
c906108c SS |
1703 | struct type *base_type, *index_type, *range_type; |
1704 | ||
1705 | /* Define an array type. */ | |
1706 | /* auxent refers to array, not base type */ | |
1707 | if (aux->x_sym.x_tagndx.l == 0) | |
1708 | cs->c_naux = 0; | |
1709 | ||
1710 | /* shift the indices down */ | |
1711 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; | |
1712 | i = 1; | |
1713 | n = dim[0]; | |
1714 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1715 | *dim = *(dim + 1); | |
1716 | *dim = 0; | |
1717 | ||
1718 | base_type = decode_type (cs, new_c_type, aux); | |
1719 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER); | |
1720 | range_type = | |
1721 | create_range_type ((struct type *) NULL, index_type, 0, n - 1); | |
1722 | type = | |
1723 | create_array_type ((struct type *) NULL, base_type, range_type); | |
1724 | } | |
1725 | return type; | |
1726 | } | |
1727 | ||
1728 | /* Reference to existing type. This only occurs with the | |
1729 | struct, union, and enum types. EPI a29k coff | |
1730 | fakes us out by producing aux entries with a nonzero | |
1731 | x_tagndx for definitions of structs, unions, and enums, so we | |
1732 | have to check the c_sclass field. SCO 3.2v4 cc gets confused | |
1733 | with pointers to pointers to defined structs, and generates | |
1734 | negative x_tagndx fields. */ | |
1735 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) | |
1736 | { | |
1737 | if (cs->c_sclass != C_STRTAG | |
1738 | && cs->c_sclass != C_UNTAG | |
1739 | && cs->c_sclass != C_ENTAG | |
1740 | && aux->x_sym.x_tagndx.l >= 0) | |
1741 | { | |
1742 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1743 | return type; | |
1744 | } | |
1745 | else | |
1746 | { | |
23136709 KB |
1747 | complaint (&symfile_complaints, |
1748 | "Symbol table entry for %s has bad tagndx value", | |
1749 | cs->c_name); | |
c906108c SS |
1750 | /* And fall through to decode_base_type... */ |
1751 | } | |
1752 | } | |
1753 | ||
1754 | return decode_base_type (cs, BTYPE (c_type), aux); | |
1755 | } | |
1756 | ||
1757 | /* Decode a coff type specifier for function definition; | |
1758 | return the type that the function returns. */ | |
1759 | ||
1760 | static struct type * | |
aa1ee363 AC |
1761 | decode_function_type (struct coff_symbol *cs, unsigned int c_type, |
1762 | union internal_auxent *aux) | |
c906108c SS |
1763 | { |
1764 | if (aux->x_sym.x_tagndx.l == 0) | |
c5aa993b | 1765 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
c906108c SS |
1766 | |
1767 | return decode_type (cs, DECREF (c_type), aux); | |
1768 | } | |
1769 | \f | |
1770 | /* basic C types */ | |
1771 | ||
1772 | static struct type * | |
aa1ee363 AC |
1773 | decode_base_type (struct coff_symbol *cs, unsigned int c_type, |
1774 | union internal_auxent *aux) | |
c906108c SS |
1775 | { |
1776 | struct type *type; | |
1777 | ||
1778 | switch (c_type) | |
1779 | { | |
c5aa993b JM |
1780 | case T_NULL: |
1781 | /* shows up with "void (*foo)();" structure members */ | |
1782 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c | 1783 | |
c906108c | 1784 | #ifdef T_VOID |
c5aa993b JM |
1785 | case T_VOID: |
1786 | /* Intel 960 COFF has this symbol and meaning. */ | |
1787 | return lookup_fundamental_type (current_objfile, FT_VOID); | |
c906108c SS |
1788 | #endif |
1789 | ||
c5aa993b JM |
1790 | case T_CHAR: |
1791 | return lookup_fundamental_type (current_objfile, FT_CHAR); | |
c906108c | 1792 | |
c5aa993b JM |
1793 | case T_SHORT: |
1794 | return lookup_fundamental_type (current_objfile, FT_SHORT); | |
c906108c | 1795 | |
c5aa993b JM |
1796 | case T_INT: |
1797 | return lookup_fundamental_type (current_objfile, FT_INTEGER); | |
c906108c | 1798 | |
c5aa993b JM |
1799 | case T_LONG: |
1800 | if (cs->c_sclass == C_FIELD | |
1801 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT) | |
1802 | return lookup_fundamental_type (current_objfile, FT_LONG_LONG); | |
1803 | else | |
1804 | return lookup_fundamental_type (current_objfile, FT_LONG); | |
c906108c | 1805 | |
c5aa993b JM |
1806 | case T_FLOAT: |
1807 | return lookup_fundamental_type (current_objfile, FT_FLOAT); | |
c906108c | 1808 | |
c5aa993b JM |
1809 | case T_DOUBLE: |
1810 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); | |
c906108c | 1811 | |
c5aa993b JM |
1812 | case T_LNGDBL: |
1813 | return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT); | |
c906108c | 1814 | |
c5aa993b JM |
1815 | case T_STRUCT: |
1816 | if (cs->c_naux != 1) | |
1817 | { | |
1818 | /* anonymous structure type */ | |
1819 | type = coff_alloc_type (cs->c_symnum); | |
1820 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1821 | TYPE_NAME (type) = NULL; | |
1822 | /* This used to set the tag to "<opaque>". But I think setting it | |
1823 | to NULL is right, and the printing code can print it as | |
1824 | "struct {...}". */ | |
1825 | TYPE_TAG_NAME (type) = NULL; | |
1826 | INIT_CPLUS_SPECIFIC (type); | |
1827 | TYPE_LENGTH (type) = 0; | |
1828 | TYPE_FIELDS (type) = 0; | |
1829 | TYPE_NFIELDS (type) = 0; | |
1830 | } | |
1831 | else | |
1832 | { | |
1833 | type = coff_read_struct_type (cs->c_symnum, | |
1834 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1835 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1836 | } | |
1837 | return type; | |
c906108c | 1838 | |
c5aa993b JM |
1839 | case T_UNION: |
1840 | if (cs->c_naux != 1) | |
1841 | { | |
1842 | /* anonymous union type */ | |
1843 | type = coff_alloc_type (cs->c_symnum); | |
1844 | TYPE_NAME (type) = NULL; | |
1845 | /* This used to set the tag to "<opaque>". But I think setting it | |
1846 | to NULL is right, and the printing code can print it as | |
1847 | "union {...}". */ | |
1848 | TYPE_TAG_NAME (type) = NULL; | |
1849 | INIT_CPLUS_SPECIFIC (type); | |
1850 | TYPE_LENGTH (type) = 0; | |
1851 | TYPE_FIELDS (type) = 0; | |
1852 | TYPE_NFIELDS (type) = 0; | |
1853 | } | |
1854 | else | |
1855 | { | |
1856 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1857 | aux->x_sym.x_misc.x_lnsz.x_size, |
c5aa993b JM |
1858 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1859 | } | |
1860 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1861 | return type; | |
c906108c | 1862 | |
c5aa993b JM |
1863 | case T_ENUM: |
1864 | if (cs->c_naux != 1) | |
1865 | { | |
1866 | /* anonymous enum type */ | |
1867 | type = coff_alloc_type (cs->c_symnum); | |
1868 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1869 | TYPE_NAME (type) = NULL; | |
1870 | /* This used to set the tag to "<opaque>". But I think setting it | |
1871 | to NULL is right, and the printing code can print it as | |
1872 | "enum {...}". */ | |
1873 | TYPE_TAG_NAME (type) = NULL; | |
1874 | TYPE_LENGTH (type) = 0; | |
1875 | TYPE_FIELDS (type) = 0; | |
1876 | TYPE_NFIELDS (type) = 0; | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | type = coff_read_enum_type (cs->c_symnum, | |
1881 | aux->x_sym.x_misc.x_lnsz.x_size, | |
1882 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); | |
1883 | } | |
1884 | return type; | |
1885 | ||
1886 | case T_MOE: | |
1887 | /* shouldn't show up here */ | |
1888 | break; | |
c906108c | 1889 | |
c5aa993b JM |
1890 | case T_UCHAR: |
1891 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); | |
c906108c | 1892 | |
c5aa993b JM |
1893 | case T_USHORT: |
1894 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); | |
c906108c | 1895 | |
c5aa993b JM |
1896 | case T_UINT: |
1897 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); | |
c906108c | 1898 | |
c5aa993b JM |
1899 | case T_ULONG: |
1900 | if (cs->c_sclass == C_FIELD | |
1901 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT) | |
1902 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG); | |
1903 | else | |
1904 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); | |
c906108c | 1905 | } |
23136709 | 1906 | complaint (&symfile_complaints, "Unexpected type for symbol %s", cs->c_name); |
c906108c SS |
1907 | return lookup_fundamental_type (current_objfile, FT_VOID); |
1908 | } | |
1909 | \f | |
1910 | /* This page contains subroutines of read_type. */ | |
1911 | ||
1912 | /* Read the description of a structure (or union type) and return an | |
1913 | object describing the type. */ | |
1914 | ||
1915 | static struct type * | |
fba45db2 | 1916 | coff_read_struct_type (int index, int length, int lastsym) |
c906108c SS |
1917 | { |
1918 | struct nextfield | |
1919 | { | |
1920 | struct nextfield *next; | |
1921 | struct field field; | |
1922 | }; | |
1923 | ||
52f0bd74 AC |
1924 | struct type *type; |
1925 | struct nextfield *list = 0; | |
c906108c SS |
1926 | struct nextfield *new; |
1927 | int nfields = 0; | |
52f0bd74 | 1928 | int n; |
c906108c SS |
1929 | char *name; |
1930 | struct coff_symbol member_sym; | |
52f0bd74 | 1931 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1932 | struct internal_syment sub_sym; |
1933 | union internal_auxent sub_aux; | |
1934 | int done = 0; | |
1935 | ||
1936 | type = coff_alloc_type (index); | |
1937 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 1938 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1939 | TYPE_LENGTH (type) = length; |
1940 | ||
1941 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1942 | { | |
1943 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1944 | name = ms->c_name; | |
1945 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
1946 | ||
1947 | switch (ms->c_sclass) | |
1948 | { | |
c5aa993b JM |
1949 | case C_MOS: |
1950 | case C_MOU: | |
1951 | ||
1952 | /* Get space to record the next field's data. */ | |
1953 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1954 | new->next = list; | |
1955 | list = new; | |
1956 | ||
1957 | /* Save the data. */ | |
1958 | list->field.name = | |
1959 | obsavestring (name, | |
1960 | strlen (name), | |
4a146b47 | 1961 | ¤t_objfile->objfile_obstack); |
c5aa993b JM |
1962 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); |
1963 | FIELD_BITPOS (list->field) = 8 * ms->c_value; | |
1964 | FIELD_BITSIZE (list->field) = 0; | |
01ad7f36 | 1965 | FIELD_STATIC_KIND (list->field) = 0; |
c5aa993b JM |
1966 | nfields++; |
1967 | break; | |
c906108c | 1968 | |
c5aa993b JM |
1969 | case C_FIELD: |
1970 | ||
1971 | /* Get space to record the next field's data. */ | |
1972 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
1973 | new->next = list; | |
1974 | list = new; | |
1975 | ||
1976 | /* Save the data. */ | |
1977 | list->field.name = | |
1978 | obsavestring (name, | |
1979 | strlen (name), | |
4a146b47 | 1980 | ¤t_objfile->objfile_obstack); |
c5aa993b JM |
1981 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux); |
1982 | FIELD_BITPOS (list->field) = ms->c_value; | |
1983 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; | |
01ad7f36 | 1984 | FIELD_STATIC_KIND (list->field) = 0; |
c5aa993b JM |
1985 | nfields++; |
1986 | break; | |
c906108c | 1987 | |
c5aa993b JM |
1988 | case C_EOS: |
1989 | done = 1; | |
1990 | break; | |
c906108c SS |
1991 | } |
1992 | } | |
1993 | /* Now create the vector of fields, and record how big it is. */ | |
1994 | ||
1995 | TYPE_NFIELDS (type) = nfields; | |
1996 | TYPE_FIELDS (type) = (struct field *) | |
1997 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
1998 | ||
1999 | /* Copy the saved-up fields into the field vector. */ | |
2000 | ||
2001 | for (n = nfields; list; list = list->next) | |
2002 | TYPE_FIELD (type, --n) = list->field; | |
2003 | ||
2004 | return type; | |
2005 | } | |
2006 | \f | |
2007 | /* Read a definition of an enumeration type, | |
2008 | and create and return a suitable type object. | |
2009 | Also defines the symbols that represent the values of the type. */ | |
2010 | ||
c906108c | 2011 | static struct type * |
fba45db2 | 2012 | coff_read_enum_type (int index, int length, int lastsym) |
c906108c | 2013 | { |
52f0bd74 AC |
2014 | struct symbol *sym; |
2015 | struct type *type; | |
c906108c SS |
2016 | int nsyms = 0; |
2017 | int done = 0; | |
2018 | struct pending **symlist; | |
2019 | struct coff_symbol member_sym; | |
52f0bd74 | 2020 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2021 | struct internal_syment sub_sym; |
2022 | union internal_auxent sub_aux; | |
2023 | struct pending *osyms, *syms; | |
2024 | int o_nsyms; | |
52f0bd74 | 2025 | int n; |
c906108c SS |
2026 | char *name; |
2027 | int unsigned_enum = 1; | |
2028 | ||
2029 | type = coff_alloc_type (index); | |
2030 | if (within_function) | |
2031 | symlist = &local_symbols; | |
2032 | else | |
2033 | symlist = &file_symbols; | |
2034 | osyms = *symlist; | |
2035 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2036 | ||
2037 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2038 | { | |
2039 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2040 | name = ms->c_name; | |
2041 | name = EXTERNAL_NAME (name, current_objfile->obfd); | |
2042 | ||
2043 | switch (ms->c_sclass) | |
2044 | { | |
c5aa993b JM |
2045 | case C_MOE: |
2046 | sym = (struct symbol *) obstack_alloc | |
4a146b47 | 2047 | (¤t_objfile->objfile_obstack, |
c5aa993b JM |
2048 | sizeof (struct symbol)); |
2049 | memset (sym, 0, sizeof (struct symbol)); | |
2050 | ||
22abf04a | 2051 | DEPRECATED_SYMBOL_NAME (sym) = |
c5aa993b | 2052 | obsavestring (name, strlen (name), |
4a146b47 | 2053 | ¤t_objfile->objfile_obstack); |
c5aa993b | 2054 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 2055 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2056 | SYMBOL_VALUE (sym) = ms->c_value; |
2057 | add_symbol_to_list (sym, symlist); | |
2058 | nsyms++; | |
2059 | break; | |
c906108c | 2060 | |
c5aa993b JM |
2061 | case C_EOS: |
2062 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2063 | up the count of how many symbols to read. So stop | |
2064 | on .eos. */ | |
2065 | done = 1; | |
2066 | break; | |
c906108c SS |
2067 | } |
2068 | } | |
2069 | ||
2070 | /* Now fill in the fields of the type-structure. */ | |
2071 | ||
2072 | if (length > 0) | |
2073 | TYPE_LENGTH (type) = length; | |
2074 | else | |
c5aa993b | 2075 | TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */ |
c906108c SS |
2076 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2077 | TYPE_NFIELDS (type) = nsyms; | |
2078 | TYPE_FIELDS (type) = (struct field *) | |
2079 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2080 | ||
2081 | /* Find the symbols for the values and put them into the type. | |
2082 | The symbols can be found in the symlist that we put them on | |
2083 | to cause them to be defined. osyms contains the old value | |
2084 | of that symlist; everything up to there was defined by us. */ | |
2085 | /* Note that we preserve the order of the enum constants, so | |
2086 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2087 | FOO, not LAST_THING. */ | |
2088 | ||
2089 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2090 | { | |
2091 | int j = 0; | |
2092 | ||
2093 | if (syms == osyms) | |
2094 | j = o_nsyms; | |
c5aa993b | 2095 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2096 | { |
2097 | struct symbol *xsym = syms->symbol[j]; | |
2098 | SYMBOL_TYPE (xsym) = type; | |
22abf04a | 2099 | TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym); |
c906108c SS |
2100 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
2101 | if (SYMBOL_VALUE (xsym) < 0) | |
2102 | unsigned_enum = 0; | |
2103 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
01ad7f36 | 2104 | TYPE_FIELD_STATIC_KIND (type, n) = 0; |
c906108c SS |
2105 | } |
2106 | if (syms == osyms) | |
2107 | break; | |
2108 | } | |
2109 | ||
2110 | if (unsigned_enum) | |
2111 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
2112 | ||
2113 | return type; | |
2114 | } | |
2115 | ||
2116 | /* Register our ability to parse symbols for coff BFD files. */ | |
2117 | ||
2118 | static struct sym_fns coff_sym_fns = | |
2119 | { | |
2120 | bfd_target_coff_flavour, | |
c5aa993b JM |
2121 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2122 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2123 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2124 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 2125 | default_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
c5aa993b | 2126 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
2127 | }; |
2128 | ||
2129 | void | |
fba45db2 | 2130 | _initialize_coffread (void) |
c906108c SS |
2131 | { |
2132 | add_symtab_fns (&coff_sym_fns); | |
2133 | } |