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 | |
130 | read_minimal_symbols PARAMS ((struct objfile *, struct section_offsets *)); | |
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 | |
142 | read_os9k_psymtab PARAMS ((struct section_offsets *, struct objfile *, | |
c5aa993b | 143 | CORE_ADDR, int)); |
c906108c SS |
144 | |
145 | static int | |
146 | fill_sym PARAMS ((FILE *, bfd *)); | |
147 | ||
148 | static void | |
149 | os9k_symfile_init PARAMS ((struct objfile *)); | |
150 | ||
151 | static void | |
152 | os9k_new_init PARAMS ((struct objfile *)); | |
153 | ||
154 | static void | |
96baa820 | 155 | os9k_symfile_read PARAMS ((struct objfile *, int)); |
c906108c SS |
156 | |
157 | static void | |
158 | os9k_symfile_finish PARAMS ((struct objfile *)); | |
159 | ||
160 | static void | |
c5aa993b JM |
161 | os9k_process_one_symbol PARAMS ((int, int, CORE_ADDR, char *, |
162 | struct section_offsets *, struct objfile *)); | |
c906108c SS |
163 | |
164 | static struct partial_symtab * | |
c5aa993b JM |
165 | os9k_start_psymtab PARAMS ((struct objfile *, struct section_offsets *, char *, |
166 | CORE_ADDR, int, int, struct partial_symbol **, | |
167 | struct partial_symbol **)); | |
c906108c SS |
168 | |
169 | static struct partial_symtab * | |
c5aa993b JM |
170 | os9k_end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, |
171 | struct partial_symtab **, int)); | |
c906108c SS |
172 | |
173 | static void | |
c5aa993b JM |
174 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *, |
175 | struct section_offsets *)); | |
c906108c SS |
176 | \f |
177 | #define HANDLE_RBRAC(val) \ | |
178 | if ((val) > pst->texthigh) pst->texthigh = (val); | |
179 | ||
180 | #define SWAP_STBHDR(hdrp, abfd) \ | |
181 | { \ | |
182 | (hdrp)->fmtno = bfd_get_16(abfd, (unsigned char *)&(hdrp)->fmtno); \ | |
183 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
184 | (hdrp)->offset = bfd_get_32(abfd, (unsigned char *)&(hdrp)->offset); \ | |
185 | (hdrp)->nsym = bfd_get_32(abfd, (unsigned char *)&(hdrp)->nsym); \ | |
186 | } | |
187 | #define SWAP_STBSYM(symp, abfd) \ | |
188 | { \ | |
189 | (symp)->value = bfd_get_32(abfd, (unsigned char *)&(symp)->value); \ | |
190 | (symp)->type = bfd_get_16(abfd, (unsigned char *)&(symp)->type); \ | |
191 | (symp)->stroff = bfd_get_32(abfd, (unsigned char *)&(symp)->stroff); \ | |
192 | } | |
193 | #define N_DATA 0 | |
194 | #define N_BSS 1 | |
195 | #define N_RDATA 2 | |
196 | #define N_IDATA 3 | |
197 | #define N_TEXT 4 | |
198 | #define N_ABS 6 | |
199 | ||
200 | static void | |
201 | record_minimal_symbol (name, address, type, objfile, section_offsets) | |
202 | char *name; | |
203 | CORE_ADDR address; | |
204 | int type; | |
205 | struct objfile *objfile; | |
206 | struct section_offsets *section_offsets; | |
207 | { | |
208 | enum minimal_symbol_type ms_type; | |
209 | ||
210 | switch (type) | |
211 | { | |
212 | case N_TEXT: | |
c5aa993b JM |
213 | ms_type = mst_text; |
214 | address += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
215 | break; | |
c906108c | 216 | case N_DATA: |
c5aa993b JM |
217 | ms_type = mst_data; |
218 | break; | |
c906108c | 219 | case N_BSS: |
c5aa993b JM |
220 | ms_type = mst_bss; |
221 | break; | |
c906108c | 222 | case N_RDATA: |
c5aa993b JM |
223 | ms_type = mst_bss; |
224 | break; | |
225 | case N_IDATA: | |
226 | ms_type = mst_data; | |
227 | break; | |
c906108c | 228 | case N_ABS: |
c5aa993b JM |
229 | ms_type = mst_abs; |
230 | break; | |
c906108c | 231 | default: |
c5aa993b JM |
232 | ms_type = mst_unknown; |
233 | break; | |
234 | } | |
c906108c SS |
235 | |
236 | prim_record_minimal_symbol (name, address, ms_type, objfile); | |
237 | } | |
238 | ||
239 | /* read and process .stb file and store in minimal symbol table */ | |
240 | typedef char mhhdr[80]; | |
c5aa993b JM |
241 | struct stbhdr |
242 | { | |
243 | mhhdr comhdr; | |
244 | char *name; | |
245 | short fmtno; | |
246 | int crc; | |
247 | int offset; | |
248 | int nsym; | |
249 | char *pad; | |
250 | }; | |
251 | struct stbsymbol | |
252 | { | |
253 | int value; | |
254 | short type; | |
255 | int stroff; | |
256 | }; | |
c906108c SS |
257 | #define STBSYMSIZE 10 |
258 | ||
259 | static void | |
c5aa993b | 260 | read_minimal_symbols (objfile, section_offsets) |
c906108c SS |
261 | struct objfile *objfile; |
262 | struct section_offsets *section_offsets; | |
263 | { | |
c5aa993b JM |
264 | FILE *fp; |
265 | bfd *abfd; | |
266 | struct stbhdr hdr; | |
267 | struct stbsymbol sym; | |
268 | int ch, i, j, off; | |
269 | char buf[64], buf1[128]; | |
270 | ||
c906108c | 271 | fp = objfile->auxf1; |
c5aa993b JM |
272 | if (fp == NULL) |
273 | return; | |
c906108c | 274 | abfd = objfile->obfd; |
c5aa993b | 275 | fread (&hdr.comhdr[0], sizeof (mhhdr), 1, fp); |
c906108c | 276 | i = 0; |
c5aa993b JM |
277 | ch = getc (fp); |
278 | while (ch != -1) | |
279 | { | |
280 | buf[i] = (char) ch; | |
281 | i++; | |
282 | if (ch == 0) | |
283 | break; | |
284 | ch = getc (fp); | |
285 | }; | |
286 | if (i % 2) | |
287 | ch = getc (fp); | |
c906108c SS |
288 | hdr.name = &buf[0]; |
289 | ||
c5aa993b JM |
290 | fread (&hdr.fmtno, sizeof (hdr.fmtno), 1, fp); |
291 | fread (&hdr.crc, sizeof (hdr.crc), 1, fp); | |
292 | fread (&hdr.offset, sizeof (hdr.offset), 1, fp); | |
293 | fread (&hdr.nsym, sizeof (hdr.nsym), 1, fp); | |
294 | SWAP_STBHDR (&hdr, abfd); | |
295 | ||
c906108c | 296 | /* read symbols */ |
c5aa993b | 297 | init_minimal_symbol_collection (); |
c906108c | 298 | off = hdr.offset; |
c5aa993b JM |
299 | for (i = hdr.nsym; i > 0; i--) |
300 | { | |
301 | fseek (fp, (long) off, 0); | |
302 | fread (&sym.value, sizeof (sym.value), 1, fp); | |
303 | fread (&sym.type, sizeof (sym.type), 1, fp); | |
304 | fread (&sym.stroff, sizeof (sym.stroff), 1, fp); | |
305 | SWAP_STBSYM (&sym, abfd); | |
306 | fseek (fp, (long) sym.stroff, 0); | |
307 | j = 0; | |
308 | ch = getc (fp); | |
309 | while (ch != -1) | |
310 | { | |
311 | buf1[j] = (char) ch; | |
312 | j++; | |
313 | if (ch == 0) | |
314 | break; | |
315 | ch = getc (fp); | |
316 | }; | |
317 | record_minimal_symbol (buf1, sym.value, sym.type & 7, objfile, section_offsets); | |
318 | off += STBSYMSIZE; | |
c906108c | 319 | }; |
c906108c SS |
320 | install_minimal_symbols (objfile); |
321 | return; | |
322 | } | |
323 | \f | |
324 | /* Scan and build partial symbols for a symbol file. | |
325 | We have been initialized by a call to os9k_symfile_init, which | |
326 | put all the relevant info into a "struct os9k_symfile_info", | |
327 | hung off the objfile structure. | |
328 | ||
329 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
330 | various sections are (depending where the sections were actually loaded). | |
331 | MAINLINE is true if we are reading the main symbol | |
332 | table (as opposed to a shared lib or dynamically loaded file). */ | |
333 | ||
334 | static void | |
96baa820 | 335 | os9k_symfile_read (objfile, mainline) |
c906108c | 336 | struct objfile *objfile; |
c5aa993b | 337 | int mainline; /* FIXME comments above */ |
c906108c SS |
338 | { |
339 | bfd *sym_bfd; | |
340 | struct cleanup *back_to; | |
341 | ||
342 | sym_bfd = objfile->obfd; | |
343 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
c5aa993b JM |
344 | if (mainline || objfile->global_psymbols.size == 0 || |
345 | objfile->static_psymbols.size == 0) | |
c906108c SS |
346 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
347 | ||
348 | free_pending_blocks (); | |
a0b3c4fd | 349 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
350 | |
351 | make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); | |
96baa820 | 352 | read_minimal_symbols (objfile, objfile->section_offsets); |
c906108c SS |
353 | |
354 | /* Now that the symbol table data of the executable file are all in core, | |
355 | process them and define symbols accordingly. */ | |
96baa820 | 356 | read_os9k_psymtab (objfile->section_offsets, objfile, |
c906108c SS |
357 | DBX_TEXT_ADDR (objfile), |
358 | DBX_TEXT_SIZE (objfile)); | |
359 | ||
360 | do_cleanups (back_to); | |
361 | } | |
362 | ||
363 | /* Initialize anything that needs initializing when a completely new | |
364 | symbol file is specified (not just adding some symbols from another | |
365 | file, e.g. a shared library). */ | |
366 | ||
367 | static void | |
368 | os9k_new_init (ignore) | |
369 | struct objfile *ignore; | |
370 | { | |
371 | stabsread_new_init (); | |
372 | buildsym_new_init (); | |
373 | psymfile_depth = 0; | |
374 | /* | |
c5aa993b JM |
375 | init_header_files (); |
376 | */ | |
c906108c SS |
377 | } |
378 | ||
379 | /* os9k_symfile_init () | |
380 | It is passed a struct objfile which contains, among other things, | |
381 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
382 | to "private data" which we fill with goodies. | |
383 | ||
384 | Since BFD doesn't know how to read debug symbols in a format-independent | |
385 | way (and may never do so...), we have to do it ourselves. We will never | |
386 | be called unless this is an a.out (or very similar) file. | |
387 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
388 | ||
389 | static void | |
390 | os9k_symfile_init (objfile) | |
391 | struct objfile *objfile; | |
392 | { | |
393 | bfd *sym_bfd = objfile->obfd; | |
394 | char *name = bfd_get_filename (sym_bfd); | |
395 | char dbgname[512], stbname[512]; | |
396 | FILE *symfile = 0; | |
397 | FILE *minfile = 0; | |
398 | asection *text_sect; | |
399 | ||
c5aa993b JM |
400 | strcpy (dbgname, name); |
401 | strcat (dbgname, ".dbg"); | |
402 | strcpy (stbname, name); | |
403 | strcat (stbname, ".stb"); | |
c906108c | 404 | |
c5aa993b JM |
405 | if ((symfile = fopen (dbgname, "r")) == NULL) |
406 | { | |
407 | warning ("Symbol file %s not found", dbgname); | |
408 | } | |
c906108c SS |
409 | objfile->auxf2 = symfile; |
410 | ||
c5aa993b JM |
411 | if ((minfile = fopen (stbname, "r")) == NULL) |
412 | { | |
413 | warning ("Symbol file %s not found", stbname); | |
414 | } | |
c906108c SS |
415 | objfile->auxf1 = minfile; |
416 | ||
417 | /* Allocate struct to keep track of the symfile */ | |
418 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
c5aa993b | 419 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); |
c906108c SS |
420 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
421 | ||
422 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
423 | if (!text_sect) | |
424 | error ("Can't find .text section in file"); | |
425 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); | |
426 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
427 | ||
c5aa993b JM |
428 | DBX_SYMBOL_SIZE (objfile) = 0; /* variable size symbol */ |
429 | DBX_SYMCOUNT (objfile) = 0; /* used to be bfd_get_symcount(sym_bfd) */ | |
430 | DBX_SYMTAB_OFFSET (objfile) = 0; /* used to be SYMBOL_TABLE_OFFSET */ | |
c906108c SS |
431 | } |
432 | ||
433 | /* Perform any local cleanups required when we are done with a particular | |
434 | objfile. I.E, we are in the process of discarding all symbol information | |
435 | for an objfile, freeing up all memory held for it, and unlinking the | |
436 | objfile struct from the global list of known objfiles. */ | |
437 | ||
438 | static void | |
439 | os9k_symfile_finish (objfile) | |
440 | struct objfile *objfile; | |
441 | { | |
442 | if (objfile->sym_stab_info != NULL) | |
443 | { | |
c5aa993b | 444 | mfree (objfile->md, objfile->sym_stab_info); |
c906108c SS |
445 | } |
446 | /* | |
c5aa993b JM |
447 | free_header_files (); |
448 | */ | |
c906108c | 449 | } |
c906108c | 450 | \f |
c5aa993b JM |
451 | |
452 | struct st_dbghdr | |
453 | { | |
c906108c SS |
454 | int sync; |
455 | short rev; | |
456 | int crc; | |
457 | short os; | |
458 | short cpu; | |
459 | }; | |
460 | #define SYNC (int)0xefbefeca | |
461 | ||
462 | #define SWAP_DBGHDR(hdrp, abfd) \ | |
463 | { \ | |
464 | (hdrp)->sync = bfd_get_32(abfd, (unsigned char *)&(hdrp)->sync); \ | |
465 | (hdrp)->rev = bfd_get_16(abfd, (unsigned char *)&(hdrp)->rev); \ | |
466 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
467 | (hdrp)->os = bfd_get_16(abfd, (unsigned char *)&(hdrp)->os); \ | |
468 | (hdrp)->cpu = bfd_get_16(abfd, (unsigned char *)&(hdrp)->cpu); \ | |
469 | } | |
470 | ||
471 | #define N_SYM_CMPLR 0 | |
472 | #define N_SYM_SLINE 1 | |
473 | #define N_SYM_SYM 2 | |
474 | #define N_SYM_LBRAC 3 | |
475 | #define N_SYM_RBRAC 4 | |
476 | #define N_SYM_SE 5 | |
477 | ||
c5aa993b JM |
478 | struct internal_symstruct |
479 | { | |
480 | short n_type; | |
481 | short n_desc; | |
482 | long n_value; | |
483 | char *n_strx; | |
484 | }; | |
c906108c SS |
485 | static struct internal_symstruct symbol; |
486 | static struct internal_symstruct *symbuf = &symbol; | |
487 | static char strbuf[4096]; | |
488 | static struct st_dbghdr dbghdr; | |
489 | static short cmplrid; | |
490 | ||
491 | #define VER_PRE_ULTRAC ((short)4) | |
492 | #define VER_ULTRAC ((short)5) | |
493 | ||
494 | static int | |
495 | fill_sym (dbg_file, abfd) | |
496 | FILE *dbg_file; | |
497 | bfd *abfd; | |
498 | { | |
c5aa993b JM |
499 | short si, nmask; |
500 | long li; | |
501 | int ii; | |
502 | char *p; | |
c906108c | 503 | |
c5aa993b | 504 | int nbytes = fread (&si, sizeof (si), 1, dbg_file); |
c906108c SS |
505 | if (nbytes == 0) |
506 | return 0; | |
507 | if (nbytes < 0) | |
508 | perror_with_name ("reading .dbg file."); | |
509 | symbuf->n_desc = 0; | |
510 | symbuf->n_value = 0; | |
511 | symbuf->n_strx = NULL; | |
c5aa993b | 512 | symbuf->n_type = bfd_get_16 (abfd, (unsigned char *) &si); |
c906108c SS |
513 | symbuf->n_type = 0xf & symbuf->n_type; |
514 | switch (symbuf->n_type) | |
515 | { | |
516 | case N_SYM_CMPLR: | |
c5aa993b JM |
517 | fread (&si, sizeof (si), 1, dbg_file); |
518 | symbuf->n_desc = bfd_get_16 (abfd, (unsigned char *) &si); | |
c906108c SS |
519 | cmplrid = symbuf->n_desc & 0xff; |
520 | break; | |
521 | case N_SYM_SLINE: | |
c5aa993b JM |
522 | fread (&li, sizeof (li), 1, dbg_file); |
523 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
524 | fread (&li, sizeof (li), 1, dbg_file); | |
525 | li = bfd_get_32 (abfd, (unsigned char *) &li); | |
526 | symbuf->n_strx = (char *) (li >> 12); | |
c906108c SS |
527 | symbuf->n_desc = li & 0xfff; |
528 | break; | |
529 | case N_SYM_SYM: | |
c5aa993b JM |
530 | fread (&li, sizeof (li), 1, dbg_file); |
531 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c | 532 | si = 0; |
c5aa993b JM |
533 | do |
534 | { | |
535 | ii = getc (dbg_file); | |
536 | strbuf[si++] = (char) ii; | |
537 | } | |
538 | while (ii != 0 || si % 2 != 0); | |
c906108c SS |
539 | symbuf->n_strx = strbuf; |
540 | p = (char *) strchr (strbuf, ':'); | |
c5aa993b JM |
541 | if (!p) |
542 | break; | |
c906108c SS |
543 | if ((p[1] == 'F' || p[1] == 'f') && cmplrid == VER_PRE_ULTRAC) |
544 | { | |
c5aa993b JM |
545 | fread (&si, sizeof (si), 1, dbg_file); |
546 | nmask = bfd_get_16 (abfd, (unsigned char *) &si); | |
547 | for (ii = 0; ii < nmask; ii++) | |
548 | fread (&si, sizeof (si), 1, dbg_file); | |
c906108c SS |
549 | } |
550 | break; | |
551 | case N_SYM_LBRAC: | |
c5aa993b JM |
552 | fread (&li, sizeof (li), 1, dbg_file); |
553 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
554 | break; |
555 | case N_SYM_RBRAC: | |
c5aa993b JM |
556 | fread (&li, sizeof (li), 1, dbg_file); |
557 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
558 | break; |
559 | case N_SYM_SE: | |
560 | break; | |
561 | } | |
c5aa993b | 562 | return 1; |
c906108c SS |
563 | } |
564 | \f | |
565 | /* Given pointers to an a.out symbol table in core containing dbx | |
566 | style data, setup partial_symtab's describing each source file for | |
567 | which debugging information is available. | |
568 | SYMFILE_NAME is the name of the file we are reading from | |
569 | and SECTION_OFFSETS is the set of offsets for the various sections | |
570 | of the file (a set of zeros if the mainline program). */ | |
571 | ||
572 | static void | |
573 | read_os9k_psymtab (section_offsets, objfile, text_addr, text_size) | |
574 | struct section_offsets *section_offsets; | |
575 | struct objfile *objfile; | |
576 | CORE_ADDR text_addr; | |
577 | int text_size; | |
578 | { | |
c5aa993b | 579 | register struct internal_symstruct *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c SS |
580 | register char *namestring; |
581 | int past_first_source_file = 0; | |
582 | CORE_ADDR last_o_file_start = 0; | |
583 | #if 0 | |
584 | struct cleanup *back_to; | |
585 | #endif | |
586 | bfd *abfd; | |
587 | FILE *fp; | |
588 | ||
589 | /* End of the text segment of the executable file. */ | |
590 | static CORE_ADDR end_of_text_addr; | |
591 | ||
592 | /* Current partial symtab */ | |
593 | static struct partial_symtab *pst = 0; | |
594 | ||
595 | /* List of current psymtab's include files */ | |
596 | char **psymtab_include_list; | |
597 | int includes_allocated; | |
598 | int includes_used; | |
599 | ||
600 | /* Index within current psymtab dependency list */ | |
601 | struct partial_symtab **dependency_list; | |
602 | int dependencies_used, dependencies_allocated; | |
603 | ||
604 | includes_allocated = 30; | |
605 | includes_used = 0; | |
606 | psymtab_include_list = (char **) alloca (includes_allocated * | |
607 | sizeof (char *)); | |
608 | ||
609 | dependencies_allocated = 30; | |
610 | dependencies_used = 0; | |
611 | dependency_list = | |
612 | (struct partial_symtab **) alloca (dependencies_allocated * | |
613 | sizeof (struct partial_symtab *)); | |
614 | ||
615 | last_source_file = NULL; | |
616 | ||
617 | #ifdef END_OF_TEXT_DEFAULT | |
618 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
619 | #else | |
620 | end_of_text_addr = text_addr + section_offsets->offsets[SECT_OFF_TEXT] | |
c5aa993b | 621 | + text_size; /* Relocate */ |
c906108c SS |
622 | #endif |
623 | ||
624 | abfd = objfile->obfd; | |
c5aa993b JM |
625 | fp = objfile->auxf2; |
626 | if (!fp) | |
627 | return; | |
628 | ||
629 | fread (&dbghdr.sync, sizeof (dbghdr.sync), 1, fp); | |
630 | fread (&dbghdr.rev, sizeof (dbghdr.rev), 1, fp); | |
631 | fread (&dbghdr.crc, sizeof (dbghdr.crc), 1, fp); | |
632 | fread (&dbghdr.os, sizeof (dbghdr.os), 1, fp); | |
633 | fread (&dbghdr.cpu, sizeof (dbghdr.cpu), 1, fp); | |
634 | SWAP_DBGHDR (&dbghdr, abfd); | |
c906108c SS |
635 | |
636 | symnum = 0; | |
c5aa993b | 637 | while (1) |
c906108c | 638 | { |
c5aa993b JM |
639 | int ret; |
640 | long cursymoffset; | |
c906108c SS |
641 | |
642 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b JM |
643 | QUIT; /* allow this to be interruptable */ |
644 | cursymoffset = ftell (objfile->auxf2); | |
645 | ret = fill_sym (objfile->auxf2, abfd); | |
646 | if (ret <= 0) | |
647 | break; | |
648 | else | |
649 | symnum++; | |
c906108c SS |
650 | bufp = symbuf; |
651 | ||
652 | /* Special case to speed up readin. */ | |
c5aa993b JM |
653 | if (bufp->n_type == (short) N_SYM_SLINE) |
654 | continue; | |
c906108c SS |
655 | |
656 | #define CUR_SYMBOL_VALUE bufp->n_value | |
657 | /* partial-stab.h */ | |
658 | ||
659 | switch (bufp->n_type) | |
660 | { | |
c5aa993b | 661 | char *p; |
c906108c SS |
662 | |
663 | case N_SYM_CMPLR: | |
664 | continue; | |
665 | ||
666 | case N_SYM_SE: | |
c5aa993b | 667 | CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c SS |
668 | if (psymfile_depth == 1 && pst) |
669 | { | |
670 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
671 | symnum, CUR_SYMBOL_VALUE, |
672 | dependency_list, dependencies_used); | |
c906108c SS |
673 | pst = (struct partial_symtab *) 0; |
674 | includes_used = 0; | |
675 | dependencies_used = 0; | |
676 | } | |
c5aa993b | 677 | psymfile_depth--; |
c906108c SS |
678 | continue; |
679 | ||
c5aa993b | 680 | case N_SYM_SYM: /* Typedef or automatic variable. */ |
c906108c | 681 | namestring = bufp->n_strx; |
c5aa993b JM |
682 | p = (char *) strchr (namestring, ':'); |
683 | if (!p) | |
684 | continue; /* Not a debugging symbol. */ | |
c906108c SS |
685 | |
686 | /* Main processing section for debugging symbols which | |
687 | the initial read through the symbol tables needs to worry | |
688 | about. If we reach this point, the symbol which we are | |
689 | considering is definitely one we are interested in. | |
690 | p must also contain the (valid) index into the namestring | |
691 | which indicates the debugging type symbol. */ | |
692 | ||
693 | switch (p[1]) | |
694 | { | |
c5aa993b | 695 | case 'S': |
c906108c SS |
696 | { |
697 | unsigned long valu; | |
c5aa993b | 698 | enum language tmp_language; |
c906108c SS |
699 | char *str, *p; |
700 | int n; | |
c5aa993b | 701 | |
c906108c SS |
702 | valu = CUR_SYMBOL_VALUE; |
703 | if (valu) | |
704 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
705 | past_first_source_file = 1; | |
706 | ||
c5aa993b JM |
707 | p = strchr (namestring, ':'); |
708 | if (p) | |
709 | n = p - namestring; | |
710 | else | |
711 | n = strlen (namestring); | |
712 | str = alloca (n + 1); | |
713 | strncpy (str, namestring, n); | |
714 | str[n] = '\0'; | |
c906108c | 715 | |
c5aa993b | 716 | if (psymfile_depth == 0) |
c906108c | 717 | { |
c5aa993b JM |
718 | if (!pst) |
719 | pst = os9k_start_psymtab (objfile, section_offsets, | |
720 | str, valu, | |
721 | cursymoffset, | |
722 | symnum - 1, | |
723 | objfile->global_psymbols.next, | |
724 | objfile->static_psymbols.next); | |
c906108c | 725 | } |
c5aa993b JM |
726 | else |
727 | { /* this is a include file */ | |
728 | tmp_language = deduce_language_from_filename (str); | |
729 | if (tmp_language != language_unknown | |
730 | && (tmp_language != language_c | |
731 | || psymtab_language != language_cplus)) | |
732 | psymtab_language = tmp_language; | |
c906108c | 733 | |
c5aa993b JM |
734 | /* |
735 | if (pst && STREQ (str, pst->filename)) | |
736 | continue; | |
737 | { | |
738 | register int i; | |
739 | for (i = 0; i < includes_used; i++) | |
740 | if (STREQ (str, psymtab_include_list[i])) | |
741 | { | |
742 | i = -1; | |
743 | break; | |
744 | } | |
745 | if (i == -1) | |
746 | continue; | |
747 | } | |
748 | */ | |
749 | ||
750 | psymtab_include_list[includes_used++] = str; | |
751 | if (includes_used >= includes_allocated) | |
752 | { | |
753 | char **orig = psymtab_include_list; | |
754 | ||
755 | psymtab_include_list = (char **) | |
756 | alloca ((includes_allocated *= 2) * sizeof (char *)); | |
757 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
758 | includes_used * sizeof (char *)); | |
759 | } | |
c906108c | 760 | |
c5aa993b JM |
761 | } |
762 | psymfile_depth++; | |
c906108c SS |
763 | continue; |
764 | } | |
765 | ||
766 | case 'v': | |
767 | add_psymbol_to_list (namestring, p - namestring, | |
768 | VAR_NAMESPACE, LOC_STATIC, | |
769 | &objfile->static_psymbols, | |
770 | 0, CUR_SYMBOL_VALUE, | |
771 | psymtab_language, objfile); | |
772 | continue; | |
773 | case 'V': | |
774 | add_psymbol_to_list (namestring, p - namestring, | |
775 | VAR_NAMESPACE, LOC_STATIC, | |
776 | &objfile->global_psymbols, | |
777 | 0, CUR_SYMBOL_VALUE, | |
778 | psymtab_language, objfile); | |
779 | continue; | |
780 | ||
781 | case 'T': | |
782 | if (p != namestring) /* a name is there, not just :T... */ | |
783 | { | |
784 | add_psymbol_to_list (namestring, p - namestring, | |
785 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
786 | &objfile->static_psymbols, | |
787 | CUR_SYMBOL_VALUE, 0, | |
788 | psymtab_language, objfile); | |
789 | if (p[2] == 't') | |
790 | { | |
791 | /* Also a typedef with the same name. */ | |
792 | add_psymbol_to_list (namestring, p - namestring, | |
793 | VAR_NAMESPACE, LOC_TYPEDEF, | |
794 | &objfile->static_psymbols, | |
c5aa993b | 795 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c SS |
796 | objfile); |
797 | p += 1; | |
798 | } | |
799 | /* The semantics of C++ state that "struct foo { ... }" | |
800 | also defines a typedef for "foo". Unfortuantely, cfront | |
801 | never makes the typedef when translating from C++ to C. | |
802 | We make the typedef here so that "ptype foo" works as | |
803 | expected for cfront translated code. */ | |
804 | else if (psymtab_language == language_cplus) | |
c5aa993b | 805 | { |
c906108c SS |
806 | /* Also a typedef with the same name. */ |
807 | add_psymbol_to_list (namestring, p - namestring, | |
808 | VAR_NAMESPACE, LOC_TYPEDEF, | |
809 | &objfile->static_psymbols, | |
c5aa993b | 810 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c | 811 | objfile); |
c5aa993b | 812 | } |
c906108c SS |
813 | } |
814 | goto check_enum; | |
815 | case 't': | |
816 | if (p != namestring) /* a name is there, not just :T... */ | |
817 | { | |
818 | add_psymbol_to_list (namestring, p - namestring, | |
819 | VAR_NAMESPACE, LOC_TYPEDEF, | |
820 | &objfile->static_psymbols, | |
821 | CUR_SYMBOL_VALUE, 0, | |
822 | psymtab_language, objfile); | |
823 | } | |
824 | check_enum: | |
825 | /* If this is an enumerated type, we need to | |
c5aa993b JM |
826 | add all the enum constants to the partial symbol |
827 | table. This does not cover enums without names, e.g. | |
828 | "enum {a, b} c;" in C, but fortunately those are | |
829 | rare. There is no way for GDB to find those from the | |
830 | enum type without spending too much time on it. Thus | |
831 | to solve this problem, the compiler needs to put out the | |
832 | enum in a nameless type. GCC2 does this. */ | |
c906108c SS |
833 | |
834 | /* We are looking for something of the form | |
c5aa993b JM |
835 | <name> ":" ("t" | "T") [<number> "="] "e" <size> |
836 | {<constant> ":" <value> ","} ";". */ | |
c906108c SS |
837 | |
838 | /* Skip over the colon and the 't' or 'T'. */ | |
839 | p += 2; | |
840 | /* This type may be given a number. Also, numbers can come | |
c5aa993b | 841 | in pairs like (0,26). Skip over it. */ |
c906108c SS |
842 | while ((*p >= '0' && *p <= '9') |
843 | || *p == '(' || *p == ',' || *p == ')' | |
844 | || *p == '=') | |
845 | p++; | |
846 | ||
847 | if (*p++ == 'e') | |
848 | { | |
849 | /* We have found an enumerated type. skip size */ | |
c5aa993b JM |
850 | while (*p >= '0' && *p <= '9') |
851 | p++; | |
c906108c SS |
852 | /* According to comments in read_enum_type |
853 | a comma could end it instead of a semicolon. | |
854 | I don't know where that happens. | |
855 | Accept either. */ | |
856 | while (*p && *p != ';' && *p != ',') | |
857 | { | |
858 | char *q; | |
859 | ||
860 | /* Check for and handle cretinous dbx symbol name | |
c5aa993b JM |
861 | continuation! |
862 | if (*p == '\\') | |
863 | p = next_symbol_text (objfile); | |
864 | */ | |
c906108c SS |
865 | |
866 | /* Point to the character after the name | |
c5aa993b | 867 | of the enum constant. */ |
c906108c SS |
868 | for (q = p; *q && *q != ':'; q++) |
869 | ; | |
870 | /* Note that the value doesn't matter for | |
c5aa993b | 871 | enum constants in psymtabs, just in symtabs. */ |
c906108c SS |
872 | add_psymbol_to_list (p, q - p, |
873 | VAR_NAMESPACE, LOC_CONST, | |
874 | &objfile->static_psymbols, 0, | |
875 | 0, psymtab_language, objfile); | |
876 | /* Point past the name. */ | |
877 | p = q; | |
878 | /* Skip over the value. */ | |
879 | while (*p && *p != ',') | |
880 | p++; | |
881 | /* Advance past the comma. */ | |
882 | if (*p) | |
883 | p++; | |
884 | } | |
885 | } | |
886 | continue; | |
887 | case 'c': | |
888 | /* Constant, e.g. from "const" in Pascal. */ | |
889 | add_psymbol_to_list (namestring, p - namestring, | |
890 | VAR_NAMESPACE, LOC_CONST, | |
c5aa993b | 891 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
892 | 0, psymtab_language, objfile); |
893 | continue; | |
894 | ||
895 | case 'f': | |
c5aa993b JM |
896 | CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
897 | if (pst && pst->textlow == 0) | |
898 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
899 | |
900 | add_psymbol_to_list (namestring, p - namestring, | |
901 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 902 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
903 | 0, psymtab_language, objfile); |
904 | continue; | |
905 | ||
906 | case 'F': | |
c5aa993b JM |
907 | CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
908 | if (pst && pst->textlow == 0) | |
909 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
910 | |
911 | add_psymbol_to_list (namestring, p - namestring, | |
912 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 913 | &objfile->global_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
914 | 0, psymtab_language, objfile); |
915 | continue; | |
916 | ||
917 | case 'p': | |
918 | case 'l': | |
c5aa993b | 919 | case 's': |
c906108c SS |
920 | continue; |
921 | ||
922 | case ':': | |
923 | /* It is a C++ nested symbol. We don't need to record it | |
c5aa993b JM |
924 | (I don't think); if we try to look up foo::bar::baz, |
925 | then symbols for the symtab containing foo should get | |
926 | read in, I think. */ | |
c906108c | 927 | /* Someone says sun cc puts out symbols like |
c5aa993b JM |
928 | /foo/baz/maclib::/usr/local/bin/maclib, |
929 | which would get here with a symbol type of ':'. */ | |
c906108c SS |
930 | continue; |
931 | ||
932 | default: | |
933 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
c5aa993b JM |
934 | of a continued stab can show up here. The question is |
935 | whether they ever can mimic a normal stab--it would be | |
936 | nice if not, since we certainly don't want to spend the | |
937 | time searching to the end of every string looking for | |
938 | a backslash. */ | |
c906108c SS |
939 | |
940 | complain (&unknown_symchar_complaint, p[1]); | |
941 | continue; | |
942 | } | |
943 | ||
944 | case N_SYM_RBRAC: | |
c5aa993b | 945 | CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c | 946 | #ifdef HANDLE_RBRAC |
c5aa993b | 947 | HANDLE_RBRAC (CUR_SYMBOL_VALUE); |
c906108c SS |
948 | continue; |
949 | #endif | |
950 | case N_SYM_LBRAC: | |
951 | continue; | |
952 | ||
953 | default: | |
954 | /* If we haven't found it yet, ignore it. It's probably some | |
955 | new type we don't know about yet. */ | |
956 | complain (&unknown_symtype_complaint, | |
957 | local_hex_string ((unsigned long) bufp->n_type)); | |
958 | continue; | |
959 | } | |
960 | } | |
961 | ||
962 | DBX_SYMCOUNT (objfile) = symnum; | |
963 | ||
964 | /* If there's stuff to be cleaned up, clean it up. */ | |
965 | if (DBX_SYMCOUNT (objfile) > 0 | |
966 | /*FIXME, does this have a bug at start address 0? */ | |
967 | && last_o_file_start | |
c5aa993b JM |
968 | && objfile->ei.entry_point < bufp->n_value |
969 | && objfile->ei.entry_point >= last_o_file_start) | |
c906108c | 970 | { |
c5aa993b JM |
971 | objfile->ei.entry_file_lowpc = last_o_file_start; |
972 | objfile->ei.entry_file_highpc = bufp->n_value; | |
c906108c SS |
973 | } |
974 | ||
975 | if (pst) | |
976 | { | |
977 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
978 | symnum, end_of_text_addr, |
979 | dependency_list, dependencies_used); | |
c906108c SS |
980 | } |
981 | /* | |
c5aa993b JM |
982 | do_cleanups (back_to); |
983 | */ | |
c906108c SS |
984 | } |
985 | ||
986 | /* Allocate and partially fill a partial symtab. It will be | |
987 | completely filled at the end of the symbol list. | |
988 | ||
989 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
990 | is the address relative to which its symbols are (incremental) or 0 | |
991 | (normal). */ | |
992 | ||
993 | ||
994 | static struct partial_symtab * | |
995 | os9k_start_psymtab (objfile, section_offsets, | |
c5aa993b | 996 | filename, textlow, ldsymoff, ldsymcnt, global_syms, static_syms) |
c906108c SS |
997 | struct objfile *objfile; |
998 | struct section_offsets *section_offsets; | |
999 | char *filename; | |
1000 | CORE_ADDR textlow; | |
1001 | int ldsymoff; | |
1002 | int ldsymcnt; | |
1003 | struct partial_symbol **global_syms; | |
1004 | struct partial_symbol **static_syms; | |
1005 | { | |
1006 | struct partial_symtab *result = | |
c5aa993b JM |
1007 | start_psymtab_common (objfile, section_offsets, |
1008 | filename, textlow, global_syms, static_syms); | |
c906108c SS |
1009 | |
1010 | result->read_symtab_private = (char *) | |
c5aa993b | 1011 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); |
c906108c | 1012 | |
c5aa993b JM |
1013 | LDSYMOFF (result) = ldsymoff; |
1014 | LDSYMCNT (result) = ldsymcnt; | |
c906108c SS |
1015 | result->read_symtab = os9k_psymtab_to_symtab; |
1016 | ||
1017 | /* Deduce the source language from the filename for this psymtab. */ | |
1018 | psymtab_language = deduce_language_from_filename (filename); | |
1019 | return result; | |
1020 | } | |
1021 | ||
1022 | /* Close off the current usage of PST. | |
1023 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
1024 | FIXME: List variables and peculiarities of same. */ | |
1025 | ||
1026 | static struct partial_symtab * | |
1027 | os9k_end_psymtab (pst, include_list, num_includes, capping_symbol_cnt, | |
c5aa993b | 1028 | capping_text, dependency_list, number_dependencies) |
c906108c SS |
1029 | struct partial_symtab *pst; |
1030 | char **include_list; | |
1031 | int num_includes; | |
1032 | int capping_symbol_cnt; | |
1033 | CORE_ADDR capping_text; | |
1034 | struct partial_symtab **dependency_list; | |
1035 | int number_dependencies; | |
1036 | /* struct partial_symbol *capping_global, *capping_static; */ | |
1037 | { | |
1038 | int i; | |
1039 | struct partial_symtab *p1; | |
c5aa993b | 1040 | struct objfile *objfile = pst->objfile; |
c906108c SS |
1041 | |
1042 | if (capping_symbol_cnt != -1) | |
c5aa993b | 1043 | LDSYMCNT (pst) = capping_symbol_cnt - LDSYMCNT (pst); |
c906108c SS |
1044 | |
1045 | /* Under Solaris, the N_SO symbols always have a value of 0, | |
1046 | instead of the usual address of the .o file. Therefore, | |
1047 | we have to do some tricks to fill in texthigh and textlow. | |
1048 | The first trick is in partial-stab.h: if we see a static | |
1049 | or global function, and the textlow for the current pst | |
1050 | is still 0, then we use that function's address for | |
1051 | the textlow of the pst. | |
1052 | ||
1053 | Now, to fill in texthigh, we remember the last function seen | |
1054 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1055 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1056 | to here via the misc_info field. Therefore, we can fill in | |
1057 | a reliable texthigh by taking the address plus size of the | |
1058 | last function in the file. | |
1059 | ||
1060 | Unfortunately, that does not cover the case where the last function | |
1061 | in the file is static. See the paragraph below for more comments | |
1062 | on this situation. | |
1063 | ||
1064 | Finally, if we have a valid textlow for the current file, we run | |
1065 | down the partial_symtab_list filling in previous texthighs that | |
1066 | are still unknown. */ | |
1067 | ||
c5aa993b JM |
1068 | if (pst->texthigh == 0 && last_function_name) |
1069 | { | |
1070 | char *p; | |
1071 | int n; | |
1072 | struct minimal_symbol *minsym; | |
1073 | ||
1074 | p = strchr (last_function_name, ':'); | |
1075 | if (p == NULL) | |
1076 | p = last_function_name; | |
1077 | n = p - last_function_name; | |
1078 | p = alloca (n + 1); | |
1079 | strncpy (p, last_function_name, n); | |
1080 | p[n] = 0; | |
1081 | ||
1082 | minsym = lookup_minimal_symbol (p, NULL, objfile); | |
1083 | ||
1084 | if (minsym) | |
1085 | { | |
1086 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + (long) MSYMBOL_INFO (minsym); | |
1087 | } | |
1088 | else | |
1089 | { | |
1090 | /* This file ends with a static function, and it's | |
1091 | difficult to imagine how hard it would be to track down | |
1092 | the elf symbol. Luckily, most of the time no one will notice, | |
1093 | since the next file will likely be compiled with -g, so | |
1094 | the code below will copy the first fuction's start address | |
1095 | back to our texthigh variable. (Also, if this file is the | |
1096 | last one in a dynamically linked program, texthigh already | |
1097 | has the right value.) If the next file isn't compiled | |
1098 | with -g, then the last function in this file winds up owning | |
1099 | all of the text space up to the next -g file, or the end (minus | |
1100 | shared libraries). This only matters for single stepping, | |
1101 | and even then it will still work, except that it will single | |
1102 | step through all of the covered functions, instead of setting | |
1103 | breakpoints around them as it usualy does. This makes it | |
1104 | pretty slow, but at least it doesn't fail. | |
1105 | ||
1106 | We can fix this with a fairly big change to bfd, but we need | |
1107 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1108 | } | |
1109 | last_function_name = NULL; | |
c906108c | 1110 | } |
c906108c SS |
1111 | |
1112 | /* this test will be true if the last .o file is only data */ | |
1113 | if (pst->textlow == 0) | |
1114 | pst->textlow = pst->texthigh; | |
1115 | ||
1116 | /* If we know our own starting text address, then walk through all other | |
1117 | psymtabs for this objfile, and if any didn't know their ending text | |
1118 | address, set it to our starting address. Take care to not set our | |
1119 | own ending address to our starting address, nor to set addresses on | |
1120 | `dependency' files that have both textlow and texthigh zero. */ | |
c5aa993b JM |
1121 | if (pst->textlow) |
1122 | { | |
1123 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
1124 | { | |
1125 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) | |
1126 | { | |
1127 | p1->texthigh = pst->textlow; | |
1128 | /* if this file has only data, then make textlow match texthigh */ | |
1129 | if (p1->textlow == 0) | |
1130 | p1->textlow = p1->texthigh; | |
1131 | } | |
c906108c SS |
1132 | } |
1133 | } | |
c906108c SS |
1134 | |
1135 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1136 | ||
1137 | pst->n_global_syms = | |
1138 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
1139 | pst->n_static_syms = | |
1140 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
1141 | ||
1142 | pst->number_of_dependencies = number_dependencies; | |
1143 | if (number_dependencies) | |
1144 | { | |
1145 | pst->dependencies = (struct partial_symtab **) | |
1146 | obstack_alloc (&objfile->psymbol_obstack, | |
c5aa993b | 1147 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 1148 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 1149 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
1150 | } |
1151 | else | |
1152 | pst->dependencies = 0; | |
1153 | ||
1154 | for (i = 0; i < num_includes; i++) | |
1155 | { | |
1156 | struct partial_symtab *subpst = | |
c5aa993b | 1157 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
1158 | |
1159 | subpst->section_offsets = pst->section_offsets; | |
1160 | subpst->read_symtab_private = | |
c5aa993b JM |
1161 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
1162 | sizeof (struct symloc)); | |
1163 | LDSYMOFF (subpst) = | |
1164 | LDSYMCNT (subpst) = | |
1165 | subpst->textlow = | |
1166 | subpst->texthigh = 0; | |
c906108c SS |
1167 | |
1168 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 1169 | shared by the entire set of include files. FIXME-someday. */ |
c906108c SS |
1170 | subpst->dependencies = (struct partial_symtab **) |
1171 | obstack_alloc (&objfile->psymbol_obstack, | |
1172 | sizeof (struct partial_symtab *)); | |
1173 | subpst->dependencies[0] = pst; | |
1174 | subpst->number_of_dependencies = 1; | |
1175 | ||
1176 | subpst->globals_offset = | |
1177 | subpst->n_global_syms = | |
c5aa993b JM |
1178 | subpst->statics_offset = |
1179 | subpst->n_static_syms = 0; | |
c906108c SS |
1180 | |
1181 | subpst->readin = 0; | |
1182 | subpst->symtab = 0; | |
1183 | subpst->read_symtab = pst->read_symtab; | |
1184 | } | |
1185 | ||
1186 | sort_pst_symbols (pst); | |
1187 | ||
1188 | /* If there is already a psymtab or symtab for a file of this name, | |
1189 | remove it. | |
1190 | (If there is a symtab, more drastic things also happen.) | |
1191 | This happens in VxWorks. */ | |
1192 | free_named_symtabs (pst->filename); | |
1193 | ||
1194 | if (num_includes == 0 | |
c5aa993b JM |
1195 | && number_dependencies == 0 |
1196 | && pst->n_global_syms == 0 | |
1197 | && pst->n_static_syms == 0) | |
1198 | { | |
1199 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1200 | it is on the obstack, but we can forget to chain it on the list. */ | |
1201 | /* Indicate that psymtab was thrown away. */ | |
c906108c | 1202 | |
c5aa993b | 1203 | discard_psymtab (pst); |
c906108c | 1204 | |
c5aa993b JM |
1205 | pst = (struct partial_symtab *) NULL; |
1206 | } | |
c906108c SS |
1207 | return pst; |
1208 | } | |
1209 | \f | |
1210 | static void | |
1211 | os9k_psymtab_to_symtab_1 (pst) | |
1212 | struct partial_symtab *pst; | |
1213 | { | |
1214 | struct cleanup *old_chain; | |
1215 | int i; | |
c5aa993b | 1216 | |
c906108c SS |
1217 | if (!pst) |
1218 | return; | |
1219 | ||
1220 | if (pst->readin) | |
1221 | { | |
1222 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1223 | pst->filename); |
c906108c SS |
1224 | return; |
1225 | } | |
1226 | ||
1227 | /* Read in all partial symtabs on which this one is dependent */ | |
1228 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1229 | if (!pst->dependencies[i]->readin) | |
1230 | { | |
1231 | /* Inform about additional files that need to be read in. */ | |
1232 | if (info_verbose) | |
1233 | { | |
1234 | fputs_filtered (" ", gdb_stdout); | |
1235 | wrap_here (""); | |
1236 | fputs_filtered ("and ", gdb_stdout); | |
1237 | wrap_here (""); | |
1238 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1239 | wrap_here (""); /* Flush output */ |
c906108c SS |
1240 | gdb_flush (gdb_stdout); |
1241 | } | |
1242 | os9k_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1243 | } | |
1244 | ||
c5aa993b | 1245 | if (LDSYMCNT (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
1246 | { |
1247 | /* Init stuff necessary for reading in symbols */ | |
1248 | stabsread_init (); | |
1249 | buildsym_init (); | |
a0b3c4fd | 1250 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1251 | |
1252 | /* Read in this file's symbols */ | |
1253 | os9k_read_ofile_symtab (pst); | |
1254 | sort_symtab_syms (pst->symtab); | |
1255 | do_cleanups (old_chain); | |
1256 | } | |
1257 | ||
1258 | pst->readin = 1; | |
1259 | } | |
1260 | ||
1261 | /* Read in all of the symbols for a given psymtab for real. | |
1262 | Be verbose about it if the user wants that. */ | |
1263 | ||
1264 | static void | |
1265 | os9k_psymtab_to_symtab (pst) | |
1266 | struct partial_symtab *pst; | |
1267 | { | |
1268 | bfd *sym_bfd; | |
1269 | ||
1270 | if (!pst) | |
1271 | return; | |
1272 | ||
1273 | if (pst->readin) | |
1274 | { | |
1275 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1276 | pst->filename); |
c906108c SS |
1277 | return; |
1278 | } | |
1279 | ||
c5aa993b | 1280 | if (LDSYMCNT (pst) || pst->number_of_dependencies) |
c906108c SS |
1281 | { |
1282 | /* Print the message now, before reading the string table, | |
c5aa993b | 1283 | to avoid disconcerting pauses. */ |
c906108c SS |
1284 | if (info_verbose) |
1285 | { | |
1286 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1287 | gdb_flush (gdb_stdout); | |
1288 | } | |
1289 | ||
1290 | sym_bfd = pst->objfile->obfd; | |
1291 | os9k_psymtab_to_symtab_1 (pst); | |
1292 | ||
1293 | /* Match with global symbols. This only needs to be done once, | |
1294 | after all of the symtabs and dependencies have been read in. */ | |
1295 | scan_file_globals (pst->objfile); | |
1296 | ||
1297 | /* Finish up the debug error message. */ | |
1298 | if (info_verbose) | |
1299 | printf_filtered ("done.\n"); | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | /* Read in a defined section of a specific object file's symbols. */ | |
1304 | static void | |
1305 | os9k_read_ofile_symtab (pst) | |
1306 | struct partial_symtab *pst; | |
1307 | { | |
1308 | register struct internal_symstruct *bufp; | |
1309 | unsigned char type; | |
1310 | unsigned max_symnum; | |
1311 | register bfd *abfd; | |
1312 | struct objfile *objfile; | |
1313 | int sym_offset; /* Offset to start of symbols to read */ | |
1314 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1315 | int text_size; /* Size of text segment for symbols */ | |
1316 | struct section_offsets *section_offsets; | |
1317 | FILE *dbg_file; | |
1318 | ||
1319 | objfile = pst->objfile; | |
c5aa993b JM |
1320 | sym_offset = LDSYMOFF (pst); |
1321 | max_symnum = LDSYMCNT (pst); | |
c906108c SS |
1322 | text_offset = pst->textlow; |
1323 | text_size = pst->texthigh - pst->textlow; | |
1324 | section_offsets = pst->section_offsets; | |
1325 | ||
1326 | current_objfile = objfile; | |
1327 | subfile_stack = NULL; | |
1328 | last_source_file = NULL; | |
1329 | ||
1330 | abfd = objfile->obfd; | |
1331 | dbg_file = objfile->auxf2; | |
1332 | ||
1333 | #if 0 | |
1334 | /* It is necessary to actually read one symbol *before* the start | |
1335 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1336 | occurs before the N_SO symbol. | |
1337 | Detecting this in read_dbx_symtab | |
1338 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 1339 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c SS |
1340 | { |
1341 | fseek (objefile->auxf2, sym_offset, SEEK_CUR); | |
c5aa993b | 1342 | fill_sym (objfile->auxf2, abfd); |
c906108c SS |
1343 | bufp = symbuf; |
1344 | ||
1345 | processing_gcc_compilation = 0; | |
1346 | if (bufp->n_type == N_TEXT) | |
1347 | { | |
1348 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1349 | processing_gcc_compilation = 1; | |
1350 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1351 | processing_gcc_compilation = 2; | |
1352 | } | |
1353 | ||
1354 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 1355 | producer. */ |
c906108c SS |
1356 | |
1357 | if (processing_gcc_compilation) | |
1358 | { | |
1359 | if (AUTO_DEMANGLING) | |
1360 | { | |
1361 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1362 | } | |
1363 | } | |
1364 | } | |
1365 | else | |
1366 | { | |
1367 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
1368 | better not check the symbol before it. I'm not this can |
1369 | happen, but it doesn't hurt to check for it. */ | |
c906108c SS |
1370 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
1371 | processing_gcc_compilation = 0; | |
1372 | } | |
1373 | #endif /* 0 */ | |
1374 | ||
c5aa993b | 1375 | fseek (dbg_file, (long) sym_offset, 0); |
c906108c | 1376 | /* |
c5aa993b JM |
1377 | if (bufp->n_type != (unsigned char)N_SYM_SYM) |
1378 | error("First symbol in segment of executable not a source symbol"); | |
1379 | */ | |
c906108c SS |
1380 | |
1381 | for (symnum = 0; symnum < max_symnum; symnum++) | |
1382 | { | |
1383 | QUIT; /* Allow this to be interruptable */ | |
c5aa993b | 1384 | fill_sym (dbg_file, abfd); |
c906108c SS |
1385 | bufp = symbuf; |
1386 | type = bufp->n_type; | |
1387 | ||
c5aa993b JM |
1388 | os9k_process_one_symbol ((int) type, (int) bufp->n_desc, |
1389 | (CORE_ADDR) bufp->n_value, bufp->n_strx, section_offsets, objfile); | |
c906108c SS |
1390 | |
1391 | /* We skip checking for a new .o or -l file; that should never | |
1392 | happen in this routine. */ | |
1393 | #if 0 | |
c5aa993b JM |
1394 | else |
1395 | if (type == N_TEXT) | |
c906108c SS |
1396 | { |
1397 | /* I don't think this code will ever be executed, because | |
1398 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1399 | the N_SO symbol which starts this source file. | |
1400 | However, there is no reason not to accept | |
1401 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1402 | ||
1403 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1404 | processing_gcc_compilation = 1; | |
1405 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1406 | processing_gcc_compilation = 2; | |
1407 | ||
1408 | if (AUTO_DEMANGLING) | |
1409 | { | |
1410 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1411 | } | |
1412 | } | |
c5aa993b JM |
1413 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
1414 | || type == (unsigned char) N_NBTEXT | |
1415 | ) | |
1416 | { | |
c906108c SS |
1417 | /* Global symbol: see if we came across a dbx defintion for |
1418 | a corresponding symbol. If so, store the value. Remove | |
1419 | syms from the chain when their values are stored, but | |
1420 | search the whole chain, as there may be several syms from | |
1421 | different files with the same name. */ | |
1422 | /* This is probably not true. Since the files will be read | |
1423 | in one at a time, each reference to a global symbol will | |
1424 | be satisfied in each file as it appears. So we skip this | |
1425 | section. */ | |
1426 | ; | |
c5aa993b | 1427 | } |
c906108c SS |
1428 | #endif /* 0 */ |
1429 | } | |
1430 | ||
1431 | current_objfile = NULL; | |
1432 | ||
1433 | /* In a Solaris elf file, this variable, which comes from the | |
1434 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1435 | which comes from pst->textlow is correct. */ | |
1436 | if (last_source_start_addr == 0) | |
1437 | last_source_start_addr = text_offset; | |
1438 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT); | |
1439 | end_stabs (); | |
1440 | } | |
c906108c | 1441 | \f |
c5aa993b | 1442 | |
c906108c SS |
1443 | /* This handles a single symbol from the symbol-file, building symbols |
1444 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1445 | ||
1446 | TYPE is the type field of the ".stab" symbol entry. | |
1447 | DESC is the desc field of the ".stab" entry. | |
1448 | VALU is the value field of the ".stab" entry. | |
1449 | NAME is the symbol name, in our address space. | |
1450 | SECTION_OFFSETS is a set of amounts by which the sections of this object | |
c5aa993b JM |
1451 | file were relocated when it was loaded into memory. |
1452 | All symbols that refer | |
1453 | to memory locations need to be offset by these amounts. | |
c906108c | 1454 | OBJFILE is the object file from which we are reading symbols. |
c5aa993b | 1455 | It is used in end_symtab. */ |
c906108c SS |
1456 | |
1457 | static void | |
1458 | os9k_process_one_symbol (type, desc, valu, name, section_offsets, objfile) | |
1459 | int type, desc; | |
1460 | CORE_ADDR valu; | |
1461 | char *name; | |
1462 | struct section_offsets *section_offsets; | |
1463 | struct objfile *objfile; | |
1464 | { | |
1465 | register struct context_stack *new; | |
1466 | /* The stab type used for the definition of the last function. | |
1467 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1468 | static int function_stab_type = 0; | |
1469 | ||
1470 | #if 0 | |
1471 | /* Something is wrong if we see real data before | |
1472 | seeing a source file name. */ | |
c5aa993b | 1473 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
1474 | { |
1475 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
1476 | Currently no one puts symbols there, but we should deal |
1477 | gracefully with the case. A complain()t might be in order, | |
1478 | but this should not be an error (). */ | |
c906108c SS |
1479 | return; |
1480 | } | |
1481 | #endif /* 0 */ | |
1482 | ||
1483 | switch (type) | |
1484 | { | |
1485 | case N_SYM_LBRAC: | |
1486 | /* On most machines, the block addresses are relative to the | |
c5aa993b JM |
1487 | N_SO, the linker did not relocate them (sigh). */ |
1488 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c906108c SS |
1489 | new = push_context (desc, valu); |
1490 | break; | |
1491 | ||
1492 | case N_SYM_RBRAC: | |
c5aa993b JM |
1493 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1494 | new = pop_context (); | |
c906108c SS |
1495 | |
1496 | #if !defined (OS9K_VARIABLES_INSIDE_BLOCK) | |
1497 | #define OS9K_VARIABLES_INSIDE_BLOCK(desc, gcc_p) 1 | |
1498 | #endif | |
1499 | ||
c5aa993b | 1500 | if (!OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1501 | local_symbols = new->locals; |
1502 | ||
1503 | if (context_stack_depth > 1) | |
1504 | { | |
1505 | /* This is not the outermost LBRAC...RBRAC pair in the function, | |
1506 | its local symbols preceded it, and are the ones just recovered | |
1507 | from the context stack. Define the block for them (but don't | |
1508 | bother if the block contains no symbols. Should we complain | |
1509 | on blocks without symbols? I can't think of any useful purpose | |
1510 | for them). */ | |
1511 | if (local_symbols != NULL) | |
1512 | { | |
1513 | /* Muzzle a compiler bug that makes end < start. (which | |
c5aa993b | 1514 | compilers? Is this ever harmful?). */ |
c906108c SS |
1515 | if (new->start_addr > valu) |
1516 | { | |
1517 | complain (&lbrac_rbrac_complaint); | |
1518 | new->start_addr = valu; | |
1519 | } | |
1520 | /* Make a block for the local symbols within. */ | |
1521 | finish_block (0, &local_symbols, new->old_blocks, | |
1522 | new->start_addr, valu, objfile); | |
1523 | } | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | if (context_stack_depth == 0) | |
1528 | { | |
1529 | within_function = 0; | |
1530 | /* Make a block for the local symbols within. */ | |
1531 | finish_block (new->name, &local_symbols, new->old_blocks, | |
c5aa993b | 1532 | new->start_addr, valu, objfile); |
c906108c SS |
1533 | } |
1534 | else | |
1535 | { | |
1536 | /* attach local_symbols to the end of new->locals */ | |
c5aa993b JM |
1537 | if (!new->locals) |
1538 | new->locals = local_symbols; | |
1539 | else | |
1540 | { | |
1541 | struct pending *p; | |
c906108c | 1542 | |
c5aa993b JM |
1543 | p = new->locals; |
1544 | while (p->next) | |
1545 | p = p->next; | |
1546 | p->next = local_symbols; | |
1547 | } | |
c906108c SS |
1548 | } |
1549 | } | |
1550 | ||
c5aa993b | 1551 | if (OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1552 | /* Now pop locals of block just finished. */ |
1553 | local_symbols = new->locals; | |
1554 | break; | |
1555 | ||
1556 | ||
1557 | case N_SYM_SLINE: | |
1558 | /* This type of "symbol" really just records | |
c5aa993b JM |
1559 | one line-number -- core-address correspondence. |
1560 | Enter it in the line list for this symbol table. */ | |
c906108c | 1561 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
c5aa993b | 1562 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c | 1563 | /* FIXME: loses if sizeof (char *) > sizeof (int) */ |
c5aa993b | 1564 | record_line (current_subfile, (int) name, valu); |
c906108c SS |
1565 | break; |
1566 | ||
c5aa993b JM |
1567 | /* The following symbol types need to have the appropriate offset added |
1568 | to their value; then we process symbol definitions in the name. */ | |
c906108c SS |
1569 | case N_SYM_SYM: |
1570 | ||
1571 | if (name) | |
1572 | { | |
1573 | char deftype; | |
1574 | char *dirn, *n; | |
1575 | char *p = strchr (name, ':'); | |
1576 | if (p == NULL) | |
1577 | deftype = '\0'; | |
1578 | else | |
1579 | deftype = p[1]; | |
1580 | ||
1581 | ||
1582 | switch (deftype) | |
1583 | { | |
1584 | case 'S': | |
c5aa993b JM |
1585 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1586 | n = strrchr (name, '/'); | |
1587 | if (n != NULL) | |
1588 | { | |
1589 | *n = '\0'; | |
1590 | n++; | |
1591 | dirn = name; | |
1592 | } | |
1593 | else | |
1594 | { | |
1595 | n = name; | |
1596 | dirn = NULL; | |
1597 | } | |
c906108c | 1598 | *p = '\0'; |
c5aa993b JM |
1599 | if (symfile_depth++ == 0) |
1600 | { | |
1601 | if (last_source_file) | |
1602 | { | |
1603 | end_symtab (valu, objfile, SECT_OFF_TEXT); | |
1604 | end_stabs (); | |
1605 | } | |
1606 | start_stabs (); | |
1607 | os9k_stabs = 1; | |
1608 | start_symtab (n, dirn, valu); | |
1609 | record_debugformat ("OS9"); | |
1610 | } | |
1611 | else | |
1612 | { | |
1613 | push_subfile (); | |
1614 | start_subfile (n, dirn != NULL ? dirn : current_subfile->dirname); | |
c906108c | 1615 | } |
c906108c SS |
1616 | break; |
1617 | ||
1618 | case 'f': | |
1619 | case 'F': | |
c5aa993b | 1620 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
c906108c SS |
1621 | function_stab_type = type; |
1622 | ||
1623 | within_function = 1; | |
1624 | new = push_context (0, valu); | |
1625 | new->name = define_symbol (valu, name, desc, type, objfile); | |
1626 | break; | |
1627 | ||
1628 | case 'V': | |
1629 | case 'v': | |
c5aa993b | 1630 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
c906108c SS |
1631 | define_symbol (valu, name, desc, type, objfile); |
1632 | break; | |
1633 | ||
1634 | default: | |
1635 | define_symbol (valu, name, desc, type, objfile); | |
1636 | break; | |
1637 | } | |
1638 | } | |
1639 | break; | |
1640 | ||
1641 | case N_SYM_SE: | |
c5aa993b JM |
1642 | if (--symfile_depth != 0) |
1643 | start_subfile (pop_subfile (), current_subfile->dirname); | |
c906108c SS |
1644 | break; |
1645 | ||
1646 | default: | |
1647 | complain (&unknown_symtype_complaint, | |
c5aa993b | 1648 | local_hex_string ((unsigned long) type)); |
c906108c SS |
1649 | /* FALLTHROUGH */ |
1650 | break; | |
1651 | ||
1652 | case N_SYM_CMPLR: | |
1653 | break; | |
1654 | } | |
1655 | previous_stab_code = type; | |
1656 | } | |
1657 | ||
1658 | static struct sym_fns os9k_sym_fns = | |
1659 | { | |
1660 | bfd_target_os9k_flavour, | |
c5aa993b JM |
1661 | os9k_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
1662 | os9k_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
1663 | os9k_symfile_read, /* sym_read: read a symbol file into symtab */ | |
1664 | os9k_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 1665 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
c5aa993b | 1666 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
1667 | }; |
1668 | ||
1669 | void | |
1670 | _initialize_os9kread () | |
1671 | { | |
c5aa993b | 1672 | add_symtab_fns (&os9k_sym_fns); |
c906108c | 1673 | } |