Commit | Line | Data |
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c906108c SS |
1 | /* Read os9/os9k symbol tables and convert to internal format, for GDB. |
2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 96, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | /* This module provides three functions: os9k_symfile_init, | |
23 | which initializes to read a symbol file; os9k_new_init, which | |
24 | discards existing cached information when all symbols are being | |
25 | discarded; and os9k_symfile_read, which reads a symbol table | |
26 | from a file. | |
27 | ||
28 | os9k_symfile_read only does the minimum work necessary for letting the | |
29 | user "name" things symbolically; it does not read the entire symtab. | |
30 | Instead, it reads the external and static symbols and puts them in partial | |
31 | symbol tables. When more extensive information is requested of a | |
32 | file, the corresponding partial symbol table is mutated into a full | |
33 | fledged symbol table by going back and reading the symbols | |
34 | for real. os9k_psymtab_to_symtab() is the function that does this */ | |
35 | ||
36 | #include "defs.h" | |
37 | #include "gdb_string.h" | |
38 | #include <stdio.h> | |
39 | ||
40 | #if defined(USG) || defined(__CYGNUSCLIB__) | |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
43 | #endif | |
44 | ||
45 | #include "obstack.h" | |
46 | #include "gdb_stat.h" | |
47 | #include <ctype.h> | |
48 | #include "symtab.h" | |
49 | #include "breakpoint.h" | |
50 | #include "command.h" | |
51 | #include "target.h" | |
52 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 53 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
c906108c SS |
54 | #include "symfile.h" |
55 | #include "objfiles.h" | |
56 | #include "buildsym.h" | |
57 | #include "gdb-stabs.h" | |
58 | #include "demangle.h" | |
59 | #include "language.h" /* Needed inside partial-stab.h */ | |
60 | #include "complaints.h" | |
61 | #include "os9k.h" | |
62 | #include "stabsread.h" | |
63 | ||
392a587b JM |
64 | extern void _initialize_os9kread PARAMS ((void)); |
65 | ||
c906108c SS |
66 | /* Each partial symbol table entry contains a pointer to private data for the |
67 | read_symtab() function to use when expanding a partial symbol table entry | |
68 | to a full symbol table entry. | |
69 | ||
70 | For dbxread this structure contains the offset within the file symbol table | |
71 | of first local symbol for this file, and count of the section | |
72 | of the symbol table devoted to this file's symbols (actually, the section | |
73 | bracketed may contain more than just this file's symbols). It also contains | |
74 | further information needed to locate the symbols if they are in an ELF file. | |
75 | ||
76 | If ldsymcnt is 0, the only reason for this thing's existence is the | |
77 | dependency list. Nothing else will happen when it is read in. */ | |
78 | ||
79 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
80 | #define LDSYMCNT(p) (((struct symloc *)((p)->read_symtab_private))->ldsymnum) | |
81 | ||
c5aa993b JM |
82 | struct symloc |
83 | { | |
84 | int ldsymoff; | |
85 | int ldsymnum; | |
86 | }; | |
c906108c SS |
87 | |
88 | /* Remember what we deduced to be the source language of this psymtab. */ | |
89 | static enum language psymtab_language = language_unknown; | |
90 | ||
91 | /* keep partial symbol table file nested depth */ | |
92 | static int psymfile_depth = 0; | |
93 | ||
94 | /* keep symbol table file nested depth */ | |
95 | static int symfile_depth = 0; | |
96 | ||
97 | /* Nonzero means give verbose info on gdb action. From main.c. */ | |
98 | extern int info_verbose; | |
99 | ||
100 | extern int previous_stab_code; | |
101 | ||
102 | /* Name of last function encountered. Used in Solaris to approximate | |
103 | object file boundaries. */ | |
104 | static char *last_function_name; | |
105 | ||
106 | /* Complaints about the symbols we have encountered. */ | |
107 | extern struct complaint lbrac_complaint; | |
108 | ||
109 | extern struct complaint unknown_symtype_complaint; | |
110 | ||
111 | extern struct complaint unknown_symchar_complaint; | |
112 | ||
113 | extern struct complaint lbrac_rbrac_complaint; | |
114 | ||
115 | extern struct complaint repeated_header_complaint; | |
116 | ||
117 | extern struct complaint repeated_header_name_complaint; | |
118 | ||
119 | #if 0 | |
120 | static struct complaint lbrac_unmatched_complaint = | |
c5aa993b | 121 | {"unmatched Increment Block Entry before symtab pos %d", 0, 0}; |
c906108c SS |
122 | |
123 | static struct complaint lbrac_mismatch_complaint = | |
c5aa993b | 124 | {"IBE/IDE symbol mismatch at symtab pos %d", 0, 0}; |
c906108c SS |
125 | #endif |
126 | \f | |
127 | /* Local function prototypes */ | |
128 | ||
129 | static void | |
d4f3574e | 130 | read_minimal_symbols PARAMS ((struct objfile *)); |
c906108c SS |
131 | |
132 | static void | |
133 | os9k_read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
134 | ||
135 | static void | |
136 | os9k_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
137 | ||
138 | static void | |
139 | os9k_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); | |
140 | ||
141 | static void | |
d4f3574e | 142 | read_os9k_psymtab PARAMS ((struct objfile *, CORE_ADDR, int)); |
c906108c SS |
143 | |
144 | static int | |
145 | fill_sym PARAMS ((FILE *, bfd *)); | |
146 | ||
147 | static void | |
148 | os9k_symfile_init PARAMS ((struct objfile *)); | |
149 | ||
150 | static void | |
151 | os9k_new_init PARAMS ((struct objfile *)); | |
152 | ||
153 | static void | |
96baa820 | 154 | os9k_symfile_read PARAMS ((struct objfile *, int)); |
c906108c SS |
155 | |
156 | static void | |
157 | os9k_symfile_finish PARAMS ((struct objfile *)); | |
158 | ||
159 | static void | |
c5aa993b JM |
160 | os9k_process_one_symbol PARAMS ((int, int, CORE_ADDR, char *, |
161 | struct section_offsets *, struct objfile *)); | |
c906108c SS |
162 | |
163 | static struct partial_symtab * | |
d4f3574e | 164 | os9k_start_psymtab PARAMS ((struct objfile *, char *, |
c5aa993b JM |
165 | CORE_ADDR, int, int, struct partial_symbol **, |
166 | struct partial_symbol **)); | |
c906108c SS |
167 | |
168 | static struct partial_symtab * | |
c5aa993b JM |
169 | os9k_end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, |
170 | struct partial_symtab **, int)); | |
c906108c SS |
171 | |
172 | static void | |
d4f3574e | 173 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); |
c906108c SS |
174 | \f |
175 | #define HANDLE_RBRAC(val) \ | |
176 | if ((val) > pst->texthigh) pst->texthigh = (val); | |
177 | ||
178 | #define SWAP_STBHDR(hdrp, abfd) \ | |
179 | { \ | |
180 | (hdrp)->fmtno = bfd_get_16(abfd, (unsigned char *)&(hdrp)->fmtno); \ | |
181 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
182 | (hdrp)->offset = bfd_get_32(abfd, (unsigned char *)&(hdrp)->offset); \ | |
183 | (hdrp)->nsym = bfd_get_32(abfd, (unsigned char *)&(hdrp)->nsym); \ | |
184 | } | |
185 | #define SWAP_STBSYM(symp, abfd) \ | |
186 | { \ | |
187 | (symp)->value = bfd_get_32(abfd, (unsigned char *)&(symp)->value); \ | |
188 | (symp)->type = bfd_get_16(abfd, (unsigned char *)&(symp)->type); \ | |
189 | (symp)->stroff = bfd_get_32(abfd, (unsigned char *)&(symp)->stroff); \ | |
190 | } | |
191 | #define N_DATA 0 | |
192 | #define N_BSS 1 | |
193 | #define N_RDATA 2 | |
194 | #define N_IDATA 3 | |
195 | #define N_TEXT 4 | |
196 | #define N_ABS 6 | |
197 | ||
198 | static void | |
d4f3574e | 199 | record_minimal_symbol (name, address, type, objfile) |
c906108c SS |
200 | char *name; |
201 | CORE_ADDR address; | |
202 | int type; | |
203 | struct objfile *objfile; | |
c906108c SS |
204 | { |
205 | enum minimal_symbol_type ms_type; | |
206 | ||
207 | switch (type) | |
208 | { | |
209 | case N_TEXT: | |
c5aa993b | 210 | ms_type = mst_text; |
d4f3574e | 211 | address += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c5aa993b | 212 | break; |
c906108c | 213 | case N_DATA: |
c5aa993b JM |
214 | ms_type = mst_data; |
215 | break; | |
c906108c | 216 | case N_BSS: |
c5aa993b JM |
217 | ms_type = mst_bss; |
218 | break; | |
c906108c | 219 | case N_RDATA: |
c5aa993b JM |
220 | ms_type = mst_bss; |
221 | break; | |
222 | case N_IDATA: | |
223 | ms_type = mst_data; | |
224 | break; | |
c906108c | 225 | case N_ABS: |
c5aa993b JM |
226 | ms_type = mst_abs; |
227 | break; | |
c906108c | 228 | default: |
c5aa993b JM |
229 | ms_type = mst_unknown; |
230 | break; | |
231 | } | |
c906108c SS |
232 | |
233 | prim_record_minimal_symbol (name, address, ms_type, objfile); | |
234 | } | |
235 | ||
236 | /* read and process .stb file and store in minimal symbol table */ | |
237 | typedef char mhhdr[80]; | |
c5aa993b JM |
238 | struct stbhdr |
239 | { | |
240 | mhhdr comhdr; | |
241 | char *name; | |
242 | short fmtno; | |
243 | int crc; | |
244 | int offset; | |
245 | int nsym; | |
246 | char *pad; | |
247 | }; | |
248 | struct stbsymbol | |
249 | { | |
250 | int value; | |
251 | short type; | |
252 | int stroff; | |
253 | }; | |
c906108c SS |
254 | #define STBSYMSIZE 10 |
255 | ||
256 | static void | |
d4f3574e | 257 | read_minimal_symbols (objfile) |
c906108c | 258 | struct objfile *objfile; |
c906108c | 259 | { |
c5aa993b JM |
260 | FILE *fp; |
261 | bfd *abfd; | |
262 | struct stbhdr hdr; | |
263 | struct stbsymbol sym; | |
264 | int ch, i, j, off; | |
265 | char buf[64], buf1[128]; | |
266 | ||
c906108c | 267 | fp = objfile->auxf1; |
c5aa993b JM |
268 | if (fp == NULL) |
269 | return; | |
c906108c | 270 | abfd = objfile->obfd; |
c5aa993b | 271 | fread (&hdr.comhdr[0], sizeof (mhhdr), 1, fp); |
c906108c | 272 | i = 0; |
c5aa993b JM |
273 | ch = getc (fp); |
274 | while (ch != -1) | |
275 | { | |
276 | buf[i] = (char) ch; | |
277 | i++; | |
278 | if (ch == 0) | |
279 | break; | |
280 | ch = getc (fp); | |
281 | }; | |
282 | if (i % 2) | |
283 | ch = getc (fp); | |
c906108c SS |
284 | hdr.name = &buf[0]; |
285 | ||
c5aa993b JM |
286 | fread (&hdr.fmtno, sizeof (hdr.fmtno), 1, fp); |
287 | fread (&hdr.crc, sizeof (hdr.crc), 1, fp); | |
288 | fread (&hdr.offset, sizeof (hdr.offset), 1, fp); | |
289 | fread (&hdr.nsym, sizeof (hdr.nsym), 1, fp); | |
290 | SWAP_STBHDR (&hdr, abfd); | |
291 | ||
c906108c | 292 | /* read symbols */ |
c5aa993b | 293 | init_minimal_symbol_collection (); |
c906108c | 294 | off = hdr.offset; |
c5aa993b JM |
295 | for (i = hdr.nsym; i > 0; i--) |
296 | { | |
297 | fseek (fp, (long) off, 0); | |
298 | fread (&sym.value, sizeof (sym.value), 1, fp); | |
299 | fread (&sym.type, sizeof (sym.type), 1, fp); | |
300 | fread (&sym.stroff, sizeof (sym.stroff), 1, fp); | |
301 | SWAP_STBSYM (&sym, abfd); | |
302 | fseek (fp, (long) sym.stroff, 0); | |
303 | j = 0; | |
304 | ch = getc (fp); | |
305 | while (ch != -1) | |
306 | { | |
307 | buf1[j] = (char) ch; | |
308 | j++; | |
309 | if (ch == 0) | |
310 | break; | |
311 | ch = getc (fp); | |
312 | }; | |
d4f3574e | 313 | record_minimal_symbol (buf1, sym.value, sym.type & 7, objfile); |
c5aa993b | 314 | off += STBSYMSIZE; |
c906108c | 315 | }; |
c906108c SS |
316 | install_minimal_symbols (objfile); |
317 | return; | |
318 | } | |
319 | \f | |
320 | /* Scan and build partial symbols for a symbol file. | |
321 | We have been initialized by a call to os9k_symfile_init, which | |
322 | put all the relevant info into a "struct os9k_symfile_info", | |
323 | hung off the objfile structure. | |
324 | ||
c906108c SS |
325 | MAINLINE is true if we are reading the main symbol |
326 | table (as opposed to a shared lib or dynamically loaded file). */ | |
327 | ||
328 | static void | |
96baa820 | 329 | os9k_symfile_read (objfile, mainline) |
c906108c | 330 | struct objfile *objfile; |
c5aa993b | 331 | int mainline; /* FIXME comments above */ |
c906108c SS |
332 | { |
333 | bfd *sym_bfd; | |
334 | struct cleanup *back_to; | |
335 | ||
336 | sym_bfd = objfile->obfd; | |
337 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
c5aa993b JM |
338 | if (mainline || objfile->global_psymbols.size == 0 || |
339 | objfile->static_psymbols.size == 0) | |
c906108c SS |
340 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
341 | ||
342 | free_pending_blocks (); | |
a0b3c4fd | 343 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
344 | |
345 | make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); | |
d4f3574e | 346 | read_minimal_symbols (objfile); |
c906108c SS |
347 | |
348 | /* Now that the symbol table data of the executable file are all in core, | |
349 | process them and define symbols accordingly. */ | |
d4f3574e | 350 | read_os9k_psymtab (objfile, |
c906108c SS |
351 | DBX_TEXT_ADDR (objfile), |
352 | DBX_TEXT_SIZE (objfile)); | |
353 | ||
354 | do_cleanups (back_to); | |
355 | } | |
356 | ||
357 | /* Initialize anything that needs initializing when a completely new | |
358 | symbol file is specified (not just adding some symbols from another | |
359 | file, e.g. a shared library). */ | |
360 | ||
361 | static void | |
362 | os9k_new_init (ignore) | |
363 | struct objfile *ignore; | |
364 | { | |
365 | stabsread_new_init (); | |
366 | buildsym_new_init (); | |
367 | psymfile_depth = 0; | |
368 | /* | |
c5aa993b JM |
369 | init_header_files (); |
370 | */ | |
c906108c SS |
371 | } |
372 | ||
373 | /* os9k_symfile_init () | |
374 | It is passed a struct objfile which contains, among other things, | |
375 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
376 | to "private data" which we fill with goodies. | |
377 | ||
378 | Since BFD doesn't know how to read debug symbols in a format-independent | |
379 | way (and may never do so...), we have to do it ourselves. We will never | |
380 | be called unless this is an a.out (or very similar) file. | |
381 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
382 | ||
383 | static void | |
384 | os9k_symfile_init (objfile) | |
385 | struct objfile *objfile; | |
386 | { | |
387 | bfd *sym_bfd = objfile->obfd; | |
388 | char *name = bfd_get_filename (sym_bfd); | |
389 | char dbgname[512], stbname[512]; | |
390 | FILE *symfile = 0; | |
391 | FILE *minfile = 0; | |
392 | asection *text_sect; | |
393 | ||
c5aa993b JM |
394 | strcpy (dbgname, name); |
395 | strcat (dbgname, ".dbg"); | |
396 | strcpy (stbname, name); | |
397 | strcat (stbname, ".stb"); | |
c906108c | 398 | |
c5aa993b JM |
399 | if ((symfile = fopen (dbgname, "r")) == NULL) |
400 | { | |
401 | warning ("Symbol file %s not found", dbgname); | |
402 | } | |
c906108c SS |
403 | objfile->auxf2 = symfile; |
404 | ||
c5aa993b JM |
405 | if ((minfile = fopen (stbname, "r")) == NULL) |
406 | { | |
407 | warning ("Symbol file %s not found", stbname); | |
408 | } | |
c906108c SS |
409 | objfile->auxf1 = minfile; |
410 | ||
411 | /* Allocate struct to keep track of the symfile */ | |
412 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
c5aa993b | 413 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); |
c906108c SS |
414 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
415 | ||
416 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
417 | if (!text_sect) | |
418 | error ("Can't find .text section in file"); | |
419 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); | |
420 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
421 | ||
c5aa993b JM |
422 | DBX_SYMBOL_SIZE (objfile) = 0; /* variable size symbol */ |
423 | DBX_SYMCOUNT (objfile) = 0; /* used to be bfd_get_symcount(sym_bfd) */ | |
424 | DBX_SYMTAB_OFFSET (objfile) = 0; /* used to be SYMBOL_TABLE_OFFSET */ | |
c906108c SS |
425 | } |
426 | ||
427 | /* Perform any local cleanups required when we are done with a particular | |
428 | objfile. I.E, we are in the process of discarding all symbol information | |
429 | for an objfile, freeing up all memory held for it, and unlinking the | |
430 | objfile struct from the global list of known objfiles. */ | |
431 | ||
432 | static void | |
433 | os9k_symfile_finish (objfile) | |
434 | struct objfile *objfile; | |
435 | { | |
436 | if (objfile->sym_stab_info != NULL) | |
437 | { | |
c5aa993b | 438 | mfree (objfile->md, objfile->sym_stab_info); |
c906108c SS |
439 | } |
440 | /* | |
c5aa993b JM |
441 | free_header_files (); |
442 | */ | |
c906108c | 443 | } |
c906108c | 444 | \f |
c5aa993b JM |
445 | |
446 | struct st_dbghdr | |
447 | { | |
c906108c SS |
448 | int sync; |
449 | short rev; | |
450 | int crc; | |
451 | short os; | |
452 | short cpu; | |
453 | }; | |
454 | #define SYNC (int)0xefbefeca | |
455 | ||
456 | #define SWAP_DBGHDR(hdrp, abfd) \ | |
457 | { \ | |
458 | (hdrp)->sync = bfd_get_32(abfd, (unsigned char *)&(hdrp)->sync); \ | |
459 | (hdrp)->rev = bfd_get_16(abfd, (unsigned char *)&(hdrp)->rev); \ | |
460 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
461 | (hdrp)->os = bfd_get_16(abfd, (unsigned char *)&(hdrp)->os); \ | |
462 | (hdrp)->cpu = bfd_get_16(abfd, (unsigned char *)&(hdrp)->cpu); \ | |
463 | } | |
464 | ||
465 | #define N_SYM_CMPLR 0 | |
466 | #define N_SYM_SLINE 1 | |
467 | #define N_SYM_SYM 2 | |
468 | #define N_SYM_LBRAC 3 | |
469 | #define N_SYM_RBRAC 4 | |
470 | #define N_SYM_SE 5 | |
471 | ||
c5aa993b JM |
472 | struct internal_symstruct |
473 | { | |
474 | short n_type; | |
475 | short n_desc; | |
476 | long n_value; | |
477 | char *n_strx; | |
478 | }; | |
c906108c SS |
479 | static struct internal_symstruct symbol; |
480 | static struct internal_symstruct *symbuf = &symbol; | |
481 | static char strbuf[4096]; | |
482 | static struct st_dbghdr dbghdr; | |
483 | static short cmplrid; | |
484 | ||
485 | #define VER_PRE_ULTRAC ((short)4) | |
486 | #define VER_ULTRAC ((short)5) | |
487 | ||
488 | static int | |
489 | fill_sym (dbg_file, abfd) | |
490 | FILE *dbg_file; | |
491 | bfd *abfd; | |
492 | { | |
c5aa993b JM |
493 | short si, nmask; |
494 | long li; | |
495 | int ii; | |
496 | char *p; | |
c906108c | 497 | |
c5aa993b | 498 | int nbytes = fread (&si, sizeof (si), 1, dbg_file); |
c906108c SS |
499 | if (nbytes == 0) |
500 | return 0; | |
501 | if (nbytes < 0) | |
502 | perror_with_name ("reading .dbg file."); | |
503 | symbuf->n_desc = 0; | |
504 | symbuf->n_value = 0; | |
505 | symbuf->n_strx = NULL; | |
c5aa993b | 506 | symbuf->n_type = bfd_get_16 (abfd, (unsigned char *) &si); |
c906108c SS |
507 | symbuf->n_type = 0xf & symbuf->n_type; |
508 | switch (symbuf->n_type) | |
509 | { | |
510 | case N_SYM_CMPLR: | |
c5aa993b JM |
511 | fread (&si, sizeof (si), 1, dbg_file); |
512 | symbuf->n_desc = bfd_get_16 (abfd, (unsigned char *) &si); | |
c906108c SS |
513 | cmplrid = symbuf->n_desc & 0xff; |
514 | break; | |
515 | case N_SYM_SLINE: | |
c5aa993b JM |
516 | fread (&li, sizeof (li), 1, dbg_file); |
517 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
518 | fread (&li, sizeof (li), 1, dbg_file); | |
519 | li = bfd_get_32 (abfd, (unsigned char *) &li); | |
520 | symbuf->n_strx = (char *) (li >> 12); | |
c906108c SS |
521 | symbuf->n_desc = li & 0xfff; |
522 | break; | |
523 | case N_SYM_SYM: | |
c5aa993b JM |
524 | fread (&li, sizeof (li), 1, dbg_file); |
525 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c | 526 | si = 0; |
c5aa993b JM |
527 | do |
528 | { | |
529 | ii = getc (dbg_file); | |
530 | strbuf[si++] = (char) ii; | |
531 | } | |
532 | while (ii != 0 || si % 2 != 0); | |
c906108c SS |
533 | symbuf->n_strx = strbuf; |
534 | p = (char *) strchr (strbuf, ':'); | |
c5aa993b JM |
535 | if (!p) |
536 | break; | |
c906108c SS |
537 | if ((p[1] == 'F' || p[1] == 'f') && cmplrid == VER_PRE_ULTRAC) |
538 | { | |
c5aa993b JM |
539 | fread (&si, sizeof (si), 1, dbg_file); |
540 | nmask = bfd_get_16 (abfd, (unsigned char *) &si); | |
541 | for (ii = 0; ii < nmask; ii++) | |
542 | fread (&si, sizeof (si), 1, dbg_file); | |
c906108c SS |
543 | } |
544 | break; | |
545 | case N_SYM_LBRAC: | |
c5aa993b JM |
546 | fread (&li, sizeof (li), 1, dbg_file); |
547 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
548 | break; |
549 | case N_SYM_RBRAC: | |
c5aa993b JM |
550 | fread (&li, sizeof (li), 1, dbg_file); |
551 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
552 | break; |
553 | case N_SYM_SE: | |
554 | break; | |
555 | } | |
c5aa993b | 556 | return 1; |
c906108c SS |
557 | } |
558 | \f | |
559 | /* Given pointers to an a.out symbol table in core containing dbx | |
560 | style data, setup partial_symtab's describing each source file for | |
561 | which debugging information is available. | |
d4f3574e | 562 | SYMFILE_NAME is the name of the file we are reading from. */ |
c906108c SS |
563 | |
564 | static void | |
d4f3574e | 565 | read_os9k_psymtab (objfile, text_addr, text_size) |
c906108c SS |
566 | struct objfile *objfile; |
567 | CORE_ADDR text_addr; | |
568 | int text_size; | |
569 | { | |
c5aa993b | 570 | register struct internal_symstruct *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c SS |
571 | register char *namestring; |
572 | int past_first_source_file = 0; | |
573 | CORE_ADDR last_o_file_start = 0; | |
574 | #if 0 | |
575 | struct cleanup *back_to; | |
576 | #endif | |
577 | bfd *abfd; | |
578 | FILE *fp; | |
579 | ||
580 | /* End of the text segment of the executable file. */ | |
581 | static CORE_ADDR end_of_text_addr; | |
582 | ||
583 | /* Current partial symtab */ | |
584 | static struct partial_symtab *pst = 0; | |
585 | ||
586 | /* List of current psymtab's include files */ | |
587 | char **psymtab_include_list; | |
588 | int includes_allocated; | |
589 | int includes_used; | |
590 | ||
591 | /* Index within current psymtab dependency list */ | |
592 | struct partial_symtab **dependency_list; | |
593 | int dependencies_used, dependencies_allocated; | |
594 | ||
595 | includes_allocated = 30; | |
596 | includes_used = 0; | |
597 | psymtab_include_list = (char **) alloca (includes_allocated * | |
598 | sizeof (char *)); | |
599 | ||
600 | dependencies_allocated = 30; | |
601 | dependencies_used = 0; | |
602 | dependency_list = | |
603 | (struct partial_symtab **) alloca (dependencies_allocated * | |
604 | sizeof (struct partial_symtab *)); | |
605 | ||
606 | last_source_file = NULL; | |
607 | ||
608 | #ifdef END_OF_TEXT_DEFAULT | |
609 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
610 | #else | |
d4f3574e | 611 | end_of_text_addr = text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT) |
c5aa993b | 612 | + text_size; /* Relocate */ |
c906108c SS |
613 | #endif |
614 | ||
615 | abfd = objfile->obfd; | |
c5aa993b JM |
616 | fp = objfile->auxf2; |
617 | if (!fp) | |
618 | return; | |
619 | ||
620 | fread (&dbghdr.sync, sizeof (dbghdr.sync), 1, fp); | |
621 | fread (&dbghdr.rev, sizeof (dbghdr.rev), 1, fp); | |
622 | fread (&dbghdr.crc, sizeof (dbghdr.crc), 1, fp); | |
623 | fread (&dbghdr.os, sizeof (dbghdr.os), 1, fp); | |
624 | fread (&dbghdr.cpu, sizeof (dbghdr.cpu), 1, fp); | |
625 | SWAP_DBGHDR (&dbghdr, abfd); | |
c906108c SS |
626 | |
627 | symnum = 0; | |
c5aa993b | 628 | while (1) |
c906108c | 629 | { |
c5aa993b JM |
630 | int ret; |
631 | long cursymoffset; | |
c906108c SS |
632 | |
633 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b JM |
634 | QUIT; /* allow this to be interruptable */ |
635 | cursymoffset = ftell (objfile->auxf2); | |
636 | ret = fill_sym (objfile->auxf2, abfd); | |
637 | if (ret <= 0) | |
638 | break; | |
639 | else | |
640 | symnum++; | |
c906108c SS |
641 | bufp = symbuf; |
642 | ||
643 | /* Special case to speed up readin. */ | |
c5aa993b JM |
644 | if (bufp->n_type == (short) N_SYM_SLINE) |
645 | continue; | |
c906108c SS |
646 | |
647 | #define CUR_SYMBOL_VALUE bufp->n_value | |
648 | /* partial-stab.h */ | |
649 | ||
650 | switch (bufp->n_type) | |
651 | { | |
c5aa993b | 652 | char *p; |
c906108c SS |
653 | |
654 | case N_SYM_CMPLR: | |
655 | continue; | |
656 | ||
657 | case N_SYM_SE: | |
d4f3574e | 658 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c906108c SS |
659 | if (psymfile_depth == 1 && pst) |
660 | { | |
661 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
662 | symnum, CUR_SYMBOL_VALUE, |
663 | dependency_list, dependencies_used); | |
c906108c SS |
664 | pst = (struct partial_symtab *) 0; |
665 | includes_used = 0; | |
666 | dependencies_used = 0; | |
667 | } | |
c5aa993b | 668 | psymfile_depth--; |
c906108c SS |
669 | continue; |
670 | ||
c5aa993b | 671 | case N_SYM_SYM: /* Typedef or automatic variable. */ |
c906108c | 672 | namestring = bufp->n_strx; |
c5aa993b JM |
673 | p = (char *) strchr (namestring, ':'); |
674 | if (!p) | |
675 | continue; /* Not a debugging symbol. */ | |
c906108c SS |
676 | |
677 | /* Main processing section for debugging symbols which | |
678 | the initial read through the symbol tables needs to worry | |
679 | about. If we reach this point, the symbol which we are | |
680 | considering is definitely one we are interested in. | |
681 | p must also contain the (valid) index into the namestring | |
682 | which indicates the debugging type symbol. */ | |
683 | ||
684 | switch (p[1]) | |
685 | { | |
c5aa993b | 686 | case 'S': |
c906108c SS |
687 | { |
688 | unsigned long valu; | |
c5aa993b | 689 | enum language tmp_language; |
c906108c SS |
690 | char *str, *p; |
691 | int n; | |
c5aa993b | 692 | |
c906108c SS |
693 | valu = CUR_SYMBOL_VALUE; |
694 | if (valu) | |
d4f3574e | 695 | valu += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c906108c SS |
696 | past_first_source_file = 1; |
697 | ||
c5aa993b JM |
698 | p = strchr (namestring, ':'); |
699 | if (p) | |
700 | n = p - namestring; | |
701 | else | |
702 | n = strlen (namestring); | |
703 | str = alloca (n + 1); | |
704 | strncpy (str, namestring, n); | |
705 | str[n] = '\0'; | |
c906108c | 706 | |
c5aa993b | 707 | if (psymfile_depth == 0) |
c906108c | 708 | { |
c5aa993b | 709 | if (!pst) |
d4f3574e | 710 | pst = os9k_start_psymtab (objfile, |
c5aa993b JM |
711 | str, valu, |
712 | cursymoffset, | |
713 | symnum - 1, | |
714 | objfile->global_psymbols.next, | |
715 | objfile->static_psymbols.next); | |
c906108c | 716 | } |
c5aa993b JM |
717 | else |
718 | { /* this is a include file */ | |
719 | tmp_language = deduce_language_from_filename (str); | |
720 | if (tmp_language != language_unknown | |
721 | && (tmp_language != language_c | |
722 | || psymtab_language != language_cplus)) | |
723 | psymtab_language = tmp_language; | |
c906108c | 724 | |
c5aa993b JM |
725 | /* |
726 | if (pst && STREQ (str, pst->filename)) | |
727 | continue; | |
728 | { | |
729 | register int i; | |
730 | for (i = 0; i < includes_used; i++) | |
731 | if (STREQ (str, psymtab_include_list[i])) | |
732 | { | |
733 | i = -1; | |
734 | break; | |
735 | } | |
736 | if (i == -1) | |
737 | continue; | |
738 | } | |
739 | */ | |
740 | ||
741 | psymtab_include_list[includes_used++] = str; | |
742 | if (includes_used >= includes_allocated) | |
743 | { | |
744 | char **orig = psymtab_include_list; | |
745 | ||
746 | psymtab_include_list = (char **) | |
747 | alloca ((includes_allocated *= 2) * sizeof (char *)); | |
748 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
749 | includes_used * sizeof (char *)); | |
750 | } | |
c906108c | 751 | |
c5aa993b JM |
752 | } |
753 | psymfile_depth++; | |
c906108c SS |
754 | continue; |
755 | } | |
756 | ||
757 | case 'v': | |
758 | add_psymbol_to_list (namestring, p - namestring, | |
759 | VAR_NAMESPACE, LOC_STATIC, | |
760 | &objfile->static_psymbols, | |
761 | 0, CUR_SYMBOL_VALUE, | |
762 | psymtab_language, objfile); | |
763 | continue; | |
764 | case 'V': | |
765 | add_psymbol_to_list (namestring, p - namestring, | |
766 | VAR_NAMESPACE, LOC_STATIC, | |
767 | &objfile->global_psymbols, | |
768 | 0, CUR_SYMBOL_VALUE, | |
769 | psymtab_language, objfile); | |
770 | continue; | |
771 | ||
772 | case 'T': | |
773 | if (p != namestring) /* a name is there, not just :T... */ | |
774 | { | |
775 | add_psymbol_to_list (namestring, p - namestring, | |
776 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
777 | &objfile->static_psymbols, | |
778 | CUR_SYMBOL_VALUE, 0, | |
779 | psymtab_language, objfile); | |
780 | if (p[2] == 't') | |
781 | { | |
782 | /* Also a typedef with the same name. */ | |
783 | add_psymbol_to_list (namestring, p - namestring, | |
784 | VAR_NAMESPACE, LOC_TYPEDEF, | |
785 | &objfile->static_psymbols, | |
c5aa993b | 786 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c SS |
787 | objfile); |
788 | p += 1; | |
789 | } | |
790 | /* The semantics of C++ state that "struct foo { ... }" | |
791 | also defines a typedef for "foo". Unfortuantely, cfront | |
792 | never makes the typedef when translating from C++ to C. | |
793 | We make the typedef here so that "ptype foo" works as | |
794 | expected for cfront translated code. */ | |
795 | else if (psymtab_language == language_cplus) | |
c5aa993b | 796 | { |
c906108c SS |
797 | /* Also a typedef with the same name. */ |
798 | add_psymbol_to_list (namestring, p - namestring, | |
799 | VAR_NAMESPACE, LOC_TYPEDEF, | |
800 | &objfile->static_psymbols, | |
c5aa993b | 801 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c | 802 | objfile); |
c5aa993b | 803 | } |
c906108c SS |
804 | } |
805 | goto check_enum; | |
806 | case 't': | |
807 | if (p != namestring) /* a name is there, not just :T... */ | |
808 | { | |
809 | add_psymbol_to_list (namestring, p - namestring, | |
810 | VAR_NAMESPACE, LOC_TYPEDEF, | |
811 | &objfile->static_psymbols, | |
812 | CUR_SYMBOL_VALUE, 0, | |
813 | psymtab_language, objfile); | |
814 | } | |
815 | check_enum: | |
816 | /* If this is an enumerated type, we need to | |
c5aa993b JM |
817 | add all the enum constants to the partial symbol |
818 | table. This does not cover enums without names, e.g. | |
819 | "enum {a, b} c;" in C, but fortunately those are | |
820 | rare. There is no way for GDB to find those from the | |
821 | enum type without spending too much time on it. Thus | |
822 | to solve this problem, the compiler needs to put out the | |
823 | enum in a nameless type. GCC2 does this. */ | |
c906108c SS |
824 | |
825 | /* We are looking for something of the form | |
c5aa993b JM |
826 | <name> ":" ("t" | "T") [<number> "="] "e" <size> |
827 | {<constant> ":" <value> ","} ";". */ | |
c906108c SS |
828 | |
829 | /* Skip over the colon and the 't' or 'T'. */ | |
830 | p += 2; | |
831 | /* This type may be given a number. Also, numbers can come | |
c5aa993b | 832 | in pairs like (0,26). Skip over it. */ |
c906108c SS |
833 | while ((*p >= '0' && *p <= '9') |
834 | || *p == '(' || *p == ',' || *p == ')' | |
835 | || *p == '=') | |
836 | p++; | |
837 | ||
838 | if (*p++ == 'e') | |
839 | { | |
840 | /* We have found an enumerated type. skip size */ | |
c5aa993b JM |
841 | while (*p >= '0' && *p <= '9') |
842 | p++; | |
c906108c SS |
843 | /* According to comments in read_enum_type |
844 | a comma could end it instead of a semicolon. | |
845 | I don't know where that happens. | |
846 | Accept either. */ | |
847 | while (*p && *p != ';' && *p != ',') | |
848 | { | |
849 | char *q; | |
850 | ||
851 | /* Check for and handle cretinous dbx symbol name | |
c5aa993b JM |
852 | continuation! |
853 | if (*p == '\\') | |
854 | p = next_symbol_text (objfile); | |
855 | */ | |
c906108c SS |
856 | |
857 | /* Point to the character after the name | |
c5aa993b | 858 | of the enum constant. */ |
c906108c SS |
859 | for (q = p; *q && *q != ':'; q++) |
860 | ; | |
861 | /* Note that the value doesn't matter for | |
c5aa993b | 862 | enum constants in psymtabs, just in symtabs. */ |
c906108c SS |
863 | add_psymbol_to_list (p, q - p, |
864 | VAR_NAMESPACE, LOC_CONST, | |
865 | &objfile->static_psymbols, 0, | |
866 | 0, psymtab_language, objfile); | |
867 | /* Point past the name. */ | |
868 | p = q; | |
869 | /* Skip over the value. */ | |
870 | while (*p && *p != ',') | |
871 | p++; | |
872 | /* Advance past the comma. */ | |
873 | if (*p) | |
874 | p++; | |
875 | } | |
876 | } | |
877 | continue; | |
878 | case 'c': | |
879 | /* Constant, e.g. from "const" in Pascal. */ | |
880 | add_psymbol_to_list (namestring, p - namestring, | |
881 | VAR_NAMESPACE, LOC_CONST, | |
c5aa993b | 882 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
883 | 0, psymtab_language, objfile); |
884 | continue; | |
885 | ||
886 | case 'f': | |
d4f3574e | 887 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c5aa993b JM |
888 | if (pst && pst->textlow == 0) |
889 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
890 | |
891 | add_psymbol_to_list (namestring, p - namestring, | |
892 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 893 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
894 | 0, psymtab_language, objfile); |
895 | continue; | |
896 | ||
897 | case 'F': | |
d4f3574e | 898 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c5aa993b JM |
899 | if (pst && pst->textlow == 0) |
900 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
901 | |
902 | add_psymbol_to_list (namestring, p - namestring, | |
903 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 904 | &objfile->global_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
905 | 0, psymtab_language, objfile); |
906 | continue; | |
907 | ||
908 | case 'p': | |
909 | case 'l': | |
c5aa993b | 910 | case 's': |
c906108c SS |
911 | continue; |
912 | ||
913 | case ':': | |
914 | /* It is a C++ nested symbol. We don't need to record it | |
c5aa993b JM |
915 | (I don't think); if we try to look up foo::bar::baz, |
916 | then symbols for the symtab containing foo should get | |
917 | read in, I think. */ | |
c906108c | 918 | /* Someone says sun cc puts out symbols like |
c5aa993b JM |
919 | /foo/baz/maclib::/usr/local/bin/maclib, |
920 | which would get here with a symbol type of ':'. */ | |
c906108c SS |
921 | continue; |
922 | ||
923 | default: | |
924 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
c5aa993b JM |
925 | of a continued stab can show up here. The question is |
926 | whether they ever can mimic a normal stab--it would be | |
927 | nice if not, since we certainly don't want to spend the | |
928 | time searching to the end of every string looking for | |
929 | a backslash. */ | |
c906108c SS |
930 | |
931 | complain (&unknown_symchar_complaint, p[1]); | |
932 | continue; | |
933 | } | |
934 | ||
935 | case N_SYM_RBRAC: | |
d4f3574e | 936 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
c906108c | 937 | #ifdef HANDLE_RBRAC |
c5aa993b | 938 | HANDLE_RBRAC (CUR_SYMBOL_VALUE); |
c906108c SS |
939 | continue; |
940 | #endif | |
941 | case N_SYM_LBRAC: | |
942 | continue; | |
943 | ||
944 | default: | |
945 | /* If we haven't found it yet, ignore it. It's probably some | |
946 | new type we don't know about yet. */ | |
947 | complain (&unknown_symtype_complaint, | |
948 | local_hex_string ((unsigned long) bufp->n_type)); | |
949 | continue; | |
950 | } | |
951 | } | |
952 | ||
953 | DBX_SYMCOUNT (objfile) = symnum; | |
954 | ||
955 | /* If there's stuff to be cleaned up, clean it up. */ | |
956 | if (DBX_SYMCOUNT (objfile) > 0 | |
957 | /*FIXME, does this have a bug at start address 0? */ | |
958 | && last_o_file_start | |
c5aa993b JM |
959 | && objfile->ei.entry_point < bufp->n_value |
960 | && objfile->ei.entry_point >= last_o_file_start) | |
c906108c | 961 | { |
c5aa993b JM |
962 | objfile->ei.entry_file_lowpc = last_o_file_start; |
963 | objfile->ei.entry_file_highpc = bufp->n_value; | |
c906108c SS |
964 | } |
965 | ||
966 | if (pst) | |
967 | { | |
968 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
969 | symnum, end_of_text_addr, |
970 | dependency_list, dependencies_used); | |
c906108c SS |
971 | } |
972 | /* | |
c5aa993b JM |
973 | do_cleanups (back_to); |
974 | */ | |
c906108c SS |
975 | } |
976 | ||
977 | /* Allocate and partially fill a partial symtab. It will be | |
978 | completely filled at the end of the symbol list. | |
979 | ||
980 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
981 | is the address relative to which its symbols are (incremental) or 0 | |
982 | (normal). */ | |
983 | ||
984 | ||
985 | static struct partial_symtab * | |
d4f3574e | 986 | os9k_start_psymtab (objfile, |
c5aa993b | 987 | filename, textlow, ldsymoff, ldsymcnt, global_syms, static_syms) |
c906108c | 988 | struct objfile *objfile; |
c906108c SS |
989 | char *filename; |
990 | CORE_ADDR textlow; | |
991 | int ldsymoff; | |
992 | int ldsymcnt; | |
993 | struct partial_symbol **global_syms; | |
994 | struct partial_symbol **static_syms; | |
995 | { | |
996 | struct partial_symtab *result = | |
d4f3574e | 997 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 998 | filename, textlow, global_syms, static_syms); |
c906108c SS |
999 | |
1000 | result->read_symtab_private = (char *) | |
c5aa993b | 1001 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); |
c906108c | 1002 | |
c5aa993b JM |
1003 | LDSYMOFF (result) = ldsymoff; |
1004 | LDSYMCNT (result) = ldsymcnt; | |
c906108c SS |
1005 | result->read_symtab = os9k_psymtab_to_symtab; |
1006 | ||
1007 | /* Deduce the source language from the filename for this psymtab. */ | |
1008 | psymtab_language = deduce_language_from_filename (filename); | |
1009 | return result; | |
1010 | } | |
1011 | ||
1012 | /* Close off the current usage of PST. | |
1013 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
1014 | FIXME: List variables and peculiarities of same. */ | |
1015 | ||
1016 | static struct partial_symtab * | |
1017 | os9k_end_psymtab (pst, include_list, num_includes, capping_symbol_cnt, | |
c5aa993b | 1018 | capping_text, dependency_list, number_dependencies) |
c906108c SS |
1019 | struct partial_symtab *pst; |
1020 | char **include_list; | |
1021 | int num_includes; | |
1022 | int capping_symbol_cnt; | |
1023 | CORE_ADDR capping_text; | |
1024 | struct partial_symtab **dependency_list; | |
1025 | int number_dependencies; | |
1026 | /* struct partial_symbol *capping_global, *capping_static; */ | |
1027 | { | |
1028 | int i; | |
1029 | struct partial_symtab *p1; | |
c5aa993b | 1030 | struct objfile *objfile = pst->objfile; |
c906108c SS |
1031 | |
1032 | if (capping_symbol_cnt != -1) | |
c5aa993b | 1033 | LDSYMCNT (pst) = capping_symbol_cnt - LDSYMCNT (pst); |
c906108c SS |
1034 | |
1035 | /* Under Solaris, the N_SO symbols always have a value of 0, | |
1036 | instead of the usual address of the .o file. Therefore, | |
1037 | we have to do some tricks to fill in texthigh and textlow. | |
1038 | The first trick is in partial-stab.h: if we see a static | |
1039 | or global function, and the textlow for the current pst | |
1040 | is still 0, then we use that function's address for | |
1041 | the textlow of the pst. | |
1042 | ||
1043 | Now, to fill in texthigh, we remember the last function seen | |
1044 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1045 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1046 | to here via the misc_info field. Therefore, we can fill in | |
1047 | a reliable texthigh by taking the address plus size of the | |
1048 | last function in the file. | |
1049 | ||
1050 | Unfortunately, that does not cover the case where the last function | |
1051 | in the file is static. See the paragraph below for more comments | |
1052 | on this situation. | |
1053 | ||
1054 | Finally, if we have a valid textlow for the current file, we run | |
1055 | down the partial_symtab_list filling in previous texthighs that | |
1056 | are still unknown. */ | |
1057 | ||
c5aa993b JM |
1058 | if (pst->texthigh == 0 && last_function_name) |
1059 | { | |
1060 | char *p; | |
1061 | int n; | |
1062 | struct minimal_symbol *minsym; | |
1063 | ||
1064 | p = strchr (last_function_name, ':'); | |
1065 | if (p == NULL) | |
1066 | p = last_function_name; | |
1067 | n = p - last_function_name; | |
1068 | p = alloca (n + 1); | |
1069 | strncpy (p, last_function_name, n); | |
1070 | p[n] = 0; | |
1071 | ||
1072 | minsym = lookup_minimal_symbol (p, NULL, objfile); | |
1073 | ||
1074 | if (minsym) | |
1075 | { | |
1076 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + (long) MSYMBOL_INFO (minsym); | |
1077 | } | |
1078 | else | |
1079 | { | |
1080 | /* This file ends with a static function, and it's | |
1081 | difficult to imagine how hard it would be to track down | |
1082 | the elf symbol. Luckily, most of the time no one will notice, | |
1083 | since the next file will likely be compiled with -g, so | |
1084 | the code below will copy the first fuction's start address | |
1085 | back to our texthigh variable. (Also, if this file is the | |
1086 | last one in a dynamically linked program, texthigh already | |
1087 | has the right value.) If the next file isn't compiled | |
1088 | with -g, then the last function in this file winds up owning | |
1089 | all of the text space up to the next -g file, or the end (minus | |
1090 | shared libraries). This only matters for single stepping, | |
1091 | and even then it will still work, except that it will single | |
1092 | step through all of the covered functions, instead of setting | |
1093 | breakpoints around them as it usualy does. This makes it | |
1094 | pretty slow, but at least it doesn't fail. | |
1095 | ||
1096 | We can fix this with a fairly big change to bfd, but we need | |
1097 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1098 | } | |
1099 | last_function_name = NULL; | |
c906108c | 1100 | } |
c906108c SS |
1101 | |
1102 | /* this test will be true if the last .o file is only data */ | |
1103 | if (pst->textlow == 0) | |
1104 | pst->textlow = pst->texthigh; | |
1105 | ||
1106 | /* If we know our own starting text address, then walk through all other | |
1107 | psymtabs for this objfile, and if any didn't know their ending text | |
1108 | address, set it to our starting address. Take care to not set our | |
1109 | own ending address to our starting address, nor to set addresses on | |
1110 | `dependency' files that have both textlow and texthigh zero. */ | |
c5aa993b JM |
1111 | if (pst->textlow) |
1112 | { | |
1113 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
1114 | { | |
1115 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) | |
1116 | { | |
1117 | p1->texthigh = pst->textlow; | |
1118 | /* if this file has only data, then make textlow match texthigh */ | |
1119 | if (p1->textlow == 0) | |
1120 | p1->textlow = p1->texthigh; | |
1121 | } | |
c906108c SS |
1122 | } |
1123 | } | |
c906108c SS |
1124 | |
1125 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1126 | ||
1127 | pst->n_global_syms = | |
1128 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
1129 | pst->n_static_syms = | |
1130 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
1131 | ||
1132 | pst->number_of_dependencies = number_dependencies; | |
1133 | if (number_dependencies) | |
1134 | { | |
1135 | pst->dependencies = (struct partial_symtab **) | |
1136 | obstack_alloc (&objfile->psymbol_obstack, | |
c5aa993b | 1137 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 1138 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 1139 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
1140 | } |
1141 | else | |
1142 | pst->dependencies = 0; | |
1143 | ||
1144 | for (i = 0; i < num_includes; i++) | |
1145 | { | |
1146 | struct partial_symtab *subpst = | |
c5aa993b | 1147 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
1148 | |
1149 | subpst->section_offsets = pst->section_offsets; | |
1150 | subpst->read_symtab_private = | |
c5aa993b JM |
1151 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
1152 | sizeof (struct symloc)); | |
1153 | LDSYMOFF (subpst) = | |
1154 | LDSYMCNT (subpst) = | |
1155 | subpst->textlow = | |
1156 | subpst->texthigh = 0; | |
c906108c SS |
1157 | |
1158 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 1159 | shared by the entire set of include files. FIXME-someday. */ |
c906108c SS |
1160 | subpst->dependencies = (struct partial_symtab **) |
1161 | obstack_alloc (&objfile->psymbol_obstack, | |
1162 | sizeof (struct partial_symtab *)); | |
1163 | subpst->dependencies[0] = pst; | |
1164 | subpst->number_of_dependencies = 1; | |
1165 | ||
1166 | subpst->globals_offset = | |
1167 | subpst->n_global_syms = | |
c5aa993b JM |
1168 | subpst->statics_offset = |
1169 | subpst->n_static_syms = 0; | |
c906108c SS |
1170 | |
1171 | subpst->readin = 0; | |
1172 | subpst->symtab = 0; | |
1173 | subpst->read_symtab = pst->read_symtab; | |
1174 | } | |
1175 | ||
1176 | sort_pst_symbols (pst); | |
1177 | ||
1178 | /* If there is already a psymtab or symtab for a file of this name, | |
1179 | remove it. | |
1180 | (If there is a symtab, more drastic things also happen.) | |
1181 | This happens in VxWorks. */ | |
1182 | free_named_symtabs (pst->filename); | |
1183 | ||
1184 | if (num_includes == 0 | |
c5aa993b JM |
1185 | && number_dependencies == 0 |
1186 | && pst->n_global_syms == 0 | |
1187 | && pst->n_static_syms == 0) | |
1188 | { | |
1189 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1190 | it is on the obstack, but we can forget to chain it on the list. */ | |
1191 | /* Indicate that psymtab was thrown away. */ | |
c906108c | 1192 | |
c5aa993b | 1193 | discard_psymtab (pst); |
c906108c | 1194 | |
c5aa993b JM |
1195 | pst = (struct partial_symtab *) NULL; |
1196 | } | |
c906108c SS |
1197 | return pst; |
1198 | } | |
1199 | \f | |
1200 | static void | |
1201 | os9k_psymtab_to_symtab_1 (pst) | |
1202 | struct partial_symtab *pst; | |
1203 | { | |
1204 | struct cleanup *old_chain; | |
1205 | int i; | |
c5aa993b | 1206 | |
c906108c SS |
1207 | if (!pst) |
1208 | return; | |
1209 | ||
1210 | if (pst->readin) | |
1211 | { | |
1212 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1213 | pst->filename); |
c906108c SS |
1214 | return; |
1215 | } | |
1216 | ||
1217 | /* Read in all partial symtabs on which this one is dependent */ | |
1218 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1219 | if (!pst->dependencies[i]->readin) | |
1220 | { | |
1221 | /* Inform about additional files that need to be read in. */ | |
1222 | if (info_verbose) | |
1223 | { | |
1224 | fputs_filtered (" ", gdb_stdout); | |
1225 | wrap_here (""); | |
1226 | fputs_filtered ("and ", gdb_stdout); | |
1227 | wrap_here (""); | |
1228 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1229 | wrap_here (""); /* Flush output */ |
c906108c SS |
1230 | gdb_flush (gdb_stdout); |
1231 | } | |
1232 | os9k_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1233 | } | |
1234 | ||
c5aa993b | 1235 | if (LDSYMCNT (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
1236 | { |
1237 | /* Init stuff necessary for reading in symbols */ | |
1238 | stabsread_init (); | |
1239 | buildsym_init (); | |
a0b3c4fd | 1240 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1241 | |
1242 | /* Read in this file's symbols */ | |
1243 | os9k_read_ofile_symtab (pst); | |
1244 | sort_symtab_syms (pst->symtab); | |
1245 | do_cleanups (old_chain); | |
1246 | } | |
1247 | ||
1248 | pst->readin = 1; | |
1249 | } | |
1250 | ||
1251 | /* Read in all of the symbols for a given psymtab for real. | |
1252 | Be verbose about it if the user wants that. */ | |
1253 | ||
1254 | static void | |
1255 | os9k_psymtab_to_symtab (pst) | |
1256 | struct partial_symtab *pst; | |
1257 | { | |
1258 | bfd *sym_bfd; | |
1259 | ||
1260 | if (!pst) | |
1261 | return; | |
1262 | ||
1263 | if (pst->readin) | |
1264 | { | |
1265 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1266 | pst->filename); |
c906108c SS |
1267 | return; |
1268 | } | |
1269 | ||
c5aa993b | 1270 | if (LDSYMCNT (pst) || pst->number_of_dependencies) |
c906108c SS |
1271 | { |
1272 | /* Print the message now, before reading the string table, | |
c5aa993b | 1273 | to avoid disconcerting pauses. */ |
c906108c SS |
1274 | if (info_verbose) |
1275 | { | |
1276 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1277 | gdb_flush (gdb_stdout); | |
1278 | } | |
1279 | ||
1280 | sym_bfd = pst->objfile->obfd; | |
1281 | os9k_psymtab_to_symtab_1 (pst); | |
1282 | ||
1283 | /* Match with global symbols. This only needs to be done once, | |
1284 | after all of the symtabs and dependencies have been read in. */ | |
1285 | scan_file_globals (pst->objfile); | |
1286 | ||
1287 | /* Finish up the debug error message. */ | |
1288 | if (info_verbose) | |
1289 | printf_filtered ("done.\n"); | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* Read in a defined section of a specific object file's symbols. */ | |
1294 | static void | |
1295 | os9k_read_ofile_symtab (pst) | |
1296 | struct partial_symtab *pst; | |
1297 | { | |
1298 | register struct internal_symstruct *bufp; | |
1299 | unsigned char type; | |
1300 | unsigned max_symnum; | |
1301 | register bfd *abfd; | |
1302 | struct objfile *objfile; | |
1303 | int sym_offset; /* Offset to start of symbols to read */ | |
1304 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1305 | int text_size; /* Size of text segment for symbols */ | |
c906108c SS |
1306 | FILE *dbg_file; |
1307 | ||
1308 | objfile = pst->objfile; | |
c5aa993b JM |
1309 | sym_offset = LDSYMOFF (pst); |
1310 | max_symnum = LDSYMCNT (pst); | |
c906108c SS |
1311 | text_offset = pst->textlow; |
1312 | text_size = pst->texthigh - pst->textlow; | |
c906108c SS |
1313 | |
1314 | current_objfile = objfile; | |
1315 | subfile_stack = NULL; | |
1316 | last_source_file = NULL; | |
1317 | ||
1318 | abfd = objfile->obfd; | |
1319 | dbg_file = objfile->auxf2; | |
1320 | ||
1321 | #if 0 | |
1322 | /* It is necessary to actually read one symbol *before* the start | |
1323 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1324 | occurs before the N_SO symbol. | |
1325 | Detecting this in read_dbx_symtab | |
1326 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 1327 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c SS |
1328 | { |
1329 | fseek (objefile->auxf2, sym_offset, SEEK_CUR); | |
c5aa993b | 1330 | fill_sym (objfile->auxf2, abfd); |
c906108c SS |
1331 | bufp = symbuf; |
1332 | ||
1333 | processing_gcc_compilation = 0; | |
1334 | if (bufp->n_type == N_TEXT) | |
1335 | { | |
1336 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1337 | processing_gcc_compilation = 1; | |
1338 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1339 | processing_gcc_compilation = 2; | |
1340 | } | |
1341 | ||
1342 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 1343 | producer. */ |
c906108c SS |
1344 | |
1345 | if (processing_gcc_compilation) | |
1346 | { | |
1347 | if (AUTO_DEMANGLING) | |
1348 | { | |
1349 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1350 | } | |
1351 | } | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
1356 | better not check the symbol before it. I'm not this can |
1357 | happen, but it doesn't hurt to check for it. */ | |
c906108c SS |
1358 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
1359 | processing_gcc_compilation = 0; | |
1360 | } | |
1361 | #endif /* 0 */ | |
1362 | ||
c5aa993b | 1363 | fseek (dbg_file, (long) sym_offset, 0); |
c906108c | 1364 | /* |
c5aa993b JM |
1365 | if (bufp->n_type != (unsigned char)N_SYM_SYM) |
1366 | error("First symbol in segment of executable not a source symbol"); | |
1367 | */ | |
c906108c SS |
1368 | |
1369 | for (symnum = 0; symnum < max_symnum; symnum++) | |
1370 | { | |
1371 | QUIT; /* Allow this to be interruptable */ | |
c5aa993b | 1372 | fill_sym (dbg_file, abfd); |
c906108c SS |
1373 | bufp = symbuf; |
1374 | type = bufp->n_type; | |
1375 | ||
c5aa993b | 1376 | os9k_process_one_symbol ((int) type, (int) bufp->n_desc, |
d4f3574e | 1377 | (CORE_ADDR) bufp->n_value, bufp->n_strx, pst->section_offsets, objfile); |
c906108c SS |
1378 | |
1379 | /* We skip checking for a new .o or -l file; that should never | |
1380 | happen in this routine. */ | |
1381 | #if 0 | |
c5aa993b JM |
1382 | else |
1383 | if (type == N_TEXT) | |
c906108c SS |
1384 | { |
1385 | /* I don't think this code will ever be executed, because | |
1386 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1387 | the N_SO symbol which starts this source file. | |
1388 | However, there is no reason not to accept | |
1389 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1390 | ||
1391 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1392 | processing_gcc_compilation = 1; | |
1393 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1394 | processing_gcc_compilation = 2; | |
1395 | ||
1396 | if (AUTO_DEMANGLING) | |
1397 | { | |
1398 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1399 | } | |
1400 | } | |
c5aa993b JM |
1401 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
1402 | || type == (unsigned char) N_NBTEXT | |
1403 | ) | |
1404 | { | |
c906108c SS |
1405 | /* Global symbol: see if we came across a dbx defintion for |
1406 | a corresponding symbol. If so, store the value. Remove | |
1407 | syms from the chain when their values are stored, but | |
1408 | search the whole chain, as there may be several syms from | |
1409 | different files with the same name. */ | |
1410 | /* This is probably not true. Since the files will be read | |
1411 | in one at a time, each reference to a global symbol will | |
1412 | be satisfied in each file as it appears. So we skip this | |
1413 | section. */ | |
1414 | ; | |
c5aa993b | 1415 | } |
c906108c SS |
1416 | #endif /* 0 */ |
1417 | } | |
1418 | ||
1419 | current_objfile = NULL; | |
1420 | ||
1421 | /* In a Solaris elf file, this variable, which comes from the | |
1422 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1423 | which comes from pst->textlow is correct. */ | |
1424 | if (last_source_start_addr == 0) | |
1425 | last_source_start_addr = text_offset; | |
1426 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT); | |
1427 | end_stabs (); | |
1428 | } | |
c906108c | 1429 | \f |
c5aa993b | 1430 | |
c906108c SS |
1431 | /* This handles a single symbol from the symbol-file, building symbols |
1432 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1433 | ||
1434 | TYPE is the type field of the ".stab" symbol entry. | |
1435 | DESC is the desc field of the ".stab" entry. | |
1436 | VALU is the value field of the ".stab" entry. | |
1437 | NAME is the symbol name, in our address space. | |
1438 | SECTION_OFFSETS is a set of amounts by which the sections of this object | |
c5aa993b JM |
1439 | file were relocated when it was loaded into memory. |
1440 | All symbols that refer | |
1441 | to memory locations need to be offset by these amounts. | |
c906108c | 1442 | OBJFILE is the object file from which we are reading symbols. |
c5aa993b | 1443 | It is used in end_symtab. */ |
c906108c SS |
1444 | |
1445 | static void | |
1446 | os9k_process_one_symbol (type, desc, valu, name, section_offsets, objfile) | |
1447 | int type, desc; | |
1448 | CORE_ADDR valu; | |
1449 | char *name; | |
1450 | struct section_offsets *section_offsets; | |
1451 | struct objfile *objfile; | |
1452 | { | |
1453 | register struct context_stack *new; | |
1454 | /* The stab type used for the definition of the last function. | |
1455 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1456 | static int function_stab_type = 0; | |
1457 | ||
1458 | #if 0 | |
1459 | /* Something is wrong if we see real data before | |
1460 | seeing a source file name. */ | |
c5aa993b | 1461 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
1462 | { |
1463 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
1464 | Currently no one puts symbols there, but we should deal |
1465 | gracefully with the case. A complain()t might be in order, | |
1466 | but this should not be an error (). */ | |
c906108c SS |
1467 | return; |
1468 | } | |
1469 | #endif /* 0 */ | |
1470 | ||
1471 | switch (type) | |
1472 | { | |
1473 | case N_SYM_LBRAC: | |
1474 | /* On most machines, the block addresses are relative to the | |
c5aa993b JM |
1475 | N_SO, the linker did not relocate them (sigh). */ |
1476 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c906108c SS |
1477 | new = push_context (desc, valu); |
1478 | break; | |
1479 | ||
1480 | case N_SYM_RBRAC: | |
c5aa993b JM |
1481 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1482 | new = pop_context (); | |
c906108c SS |
1483 | |
1484 | #if !defined (OS9K_VARIABLES_INSIDE_BLOCK) | |
1485 | #define OS9K_VARIABLES_INSIDE_BLOCK(desc, gcc_p) 1 | |
1486 | #endif | |
1487 | ||
c5aa993b | 1488 | if (!OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1489 | local_symbols = new->locals; |
1490 | ||
1491 | if (context_stack_depth > 1) | |
1492 | { | |
1493 | /* This is not the outermost LBRAC...RBRAC pair in the function, | |
1494 | its local symbols preceded it, and are the ones just recovered | |
1495 | from the context stack. Define the block for them (but don't | |
1496 | bother if the block contains no symbols. Should we complain | |
1497 | on blocks without symbols? I can't think of any useful purpose | |
1498 | for them). */ | |
1499 | if (local_symbols != NULL) | |
1500 | { | |
1501 | /* Muzzle a compiler bug that makes end < start. (which | |
c5aa993b | 1502 | compilers? Is this ever harmful?). */ |
c906108c SS |
1503 | if (new->start_addr > valu) |
1504 | { | |
1505 | complain (&lbrac_rbrac_complaint); | |
1506 | new->start_addr = valu; | |
1507 | } | |
1508 | /* Make a block for the local symbols within. */ | |
1509 | finish_block (0, &local_symbols, new->old_blocks, | |
1510 | new->start_addr, valu, objfile); | |
1511 | } | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | if (context_stack_depth == 0) | |
1516 | { | |
1517 | within_function = 0; | |
1518 | /* Make a block for the local symbols within. */ | |
1519 | finish_block (new->name, &local_symbols, new->old_blocks, | |
c5aa993b | 1520 | new->start_addr, valu, objfile); |
c906108c SS |
1521 | } |
1522 | else | |
1523 | { | |
1524 | /* attach local_symbols to the end of new->locals */ | |
c5aa993b JM |
1525 | if (!new->locals) |
1526 | new->locals = local_symbols; | |
1527 | else | |
1528 | { | |
1529 | struct pending *p; | |
c906108c | 1530 | |
c5aa993b JM |
1531 | p = new->locals; |
1532 | while (p->next) | |
1533 | p = p->next; | |
1534 | p->next = local_symbols; | |
1535 | } | |
c906108c SS |
1536 | } |
1537 | } | |
1538 | ||
c5aa993b | 1539 | if (OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1540 | /* Now pop locals of block just finished. */ |
1541 | local_symbols = new->locals; | |
1542 | break; | |
1543 | ||
1544 | ||
1545 | case N_SYM_SLINE: | |
1546 | /* This type of "symbol" really just records | |
c5aa993b JM |
1547 | one line-number -- core-address correspondence. |
1548 | Enter it in the line list for this symbol table. */ | |
c906108c | 1549 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
c5aa993b | 1550 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c | 1551 | /* FIXME: loses if sizeof (char *) > sizeof (int) */ |
c5aa993b | 1552 | record_line (current_subfile, (int) name, valu); |
c906108c SS |
1553 | break; |
1554 | ||
c5aa993b JM |
1555 | /* The following symbol types need to have the appropriate offset added |
1556 | to their value; then we process symbol definitions in the name. */ | |
c906108c SS |
1557 | case N_SYM_SYM: |
1558 | ||
1559 | if (name) | |
1560 | { | |
1561 | char deftype; | |
1562 | char *dirn, *n; | |
1563 | char *p = strchr (name, ':'); | |
1564 | if (p == NULL) | |
1565 | deftype = '\0'; | |
1566 | else | |
1567 | deftype = p[1]; | |
1568 | ||
1569 | ||
1570 | switch (deftype) | |
1571 | { | |
1572 | case 'S': | |
c5aa993b JM |
1573 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1574 | n = strrchr (name, '/'); | |
1575 | if (n != NULL) | |
1576 | { | |
1577 | *n = '\0'; | |
1578 | n++; | |
1579 | dirn = name; | |
1580 | } | |
1581 | else | |
1582 | { | |
1583 | n = name; | |
1584 | dirn = NULL; | |
1585 | } | |
c906108c | 1586 | *p = '\0'; |
c5aa993b JM |
1587 | if (symfile_depth++ == 0) |
1588 | { | |
1589 | if (last_source_file) | |
1590 | { | |
1591 | end_symtab (valu, objfile, SECT_OFF_TEXT); | |
1592 | end_stabs (); | |
1593 | } | |
1594 | start_stabs (); | |
1595 | os9k_stabs = 1; | |
1596 | start_symtab (n, dirn, valu); | |
1597 | record_debugformat ("OS9"); | |
1598 | } | |
1599 | else | |
1600 | { | |
1601 | push_subfile (); | |
1602 | start_subfile (n, dirn != NULL ? dirn : current_subfile->dirname); | |
c906108c | 1603 | } |
c906108c SS |
1604 | break; |
1605 | ||
1606 | case 'f': | |
1607 | case 'F': | |
c5aa993b | 1608 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c SS |
1609 | function_stab_type = type; |
1610 | ||
1611 | within_function = 1; | |
1612 | new = push_context (0, valu); | |
1613 | new->name = define_symbol (valu, name, desc, type, objfile); | |
1614 | break; | |
1615 | ||
1616 | case 'V': | |
1617 | case 'v': | |
c5aa993b | 1618 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
c906108c SS |
1619 | define_symbol (valu, name, desc, type, objfile); |
1620 | break; | |
1621 | ||
1622 | default: | |
1623 | define_symbol (valu, name, desc, type, objfile); | |
1624 | break; | |
1625 | } | |
1626 | } | |
1627 | break; | |
1628 | ||
1629 | case N_SYM_SE: | |
c5aa993b JM |
1630 | if (--symfile_depth != 0) |
1631 | start_subfile (pop_subfile (), current_subfile->dirname); | |
c906108c SS |
1632 | break; |
1633 | ||
1634 | default: | |
1635 | complain (&unknown_symtype_complaint, | |
c5aa993b | 1636 | local_hex_string ((unsigned long) type)); |
c906108c SS |
1637 | /* FALLTHROUGH */ |
1638 | break; | |
1639 | ||
1640 | case N_SYM_CMPLR: | |
1641 | break; | |
1642 | } | |
1643 | previous_stab_code = type; | |
1644 | } | |
1645 | ||
1646 | static struct sym_fns os9k_sym_fns = | |
1647 | { | |
1648 | bfd_target_os9k_flavour, | |
c5aa993b JM |
1649 | os9k_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
1650 | os9k_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
1651 | os9k_symfile_read, /* sym_read: read a symbol file into symtab */ | |
1652 | os9k_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 1653 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
c5aa993b | 1654 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
1655 | }; |
1656 | ||
1657 | void | |
1658 | _initialize_os9kread () | |
1659 | { | |
c5aa993b | 1660 | add_symtab_fns (&os9k_sym_fns); |
c906108c | 1661 | } |