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 | ||
a14ed312 | 64 | extern void _initialize_os9kread (void); |
392a587b | 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 | ||
a14ed312 | 129 | static void read_minimal_symbols (struct objfile *); |
c906108c | 130 | |
a14ed312 | 131 | static void os9k_read_ofile_symtab (struct partial_symtab *); |
c906108c | 132 | |
a14ed312 | 133 | static void os9k_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 134 | |
a14ed312 | 135 | static void os9k_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 136 | |
a14ed312 | 137 | static void read_os9k_psymtab (struct objfile *, CORE_ADDR, int); |
c906108c | 138 | |
a14ed312 | 139 | static int fill_sym (FILE *, bfd *); |
c906108c | 140 | |
a14ed312 | 141 | static void os9k_symfile_init (struct objfile *); |
c906108c | 142 | |
a14ed312 | 143 | static void os9k_new_init (struct objfile *); |
c906108c | 144 | |
a14ed312 | 145 | static void os9k_symfile_read (struct objfile *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void os9k_symfile_finish (struct objfile *); |
c906108c SS |
148 | |
149 | static void | |
a14ed312 KB |
150 | os9k_process_one_symbol (int, int, CORE_ADDR, char *, |
151 | struct section_offsets *, struct objfile *); | |
c906108c | 152 | |
a14ed312 KB |
153 | static struct partial_symtab *os9k_start_psymtab (struct objfile *, char *, |
154 | CORE_ADDR, int, int, | |
155 | struct partial_symbol **, | |
156 | struct partial_symbol **); | |
c906108c | 157 | |
a14ed312 KB |
158 | static struct partial_symtab *os9k_end_psymtab (struct partial_symtab *, |
159 | char **, int, int, CORE_ADDR, | |
160 | struct partial_symtab **, | |
161 | int); | |
c906108c | 162 | |
a14ed312 | 163 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
c906108c SS |
164 | \f |
165 | #define HANDLE_RBRAC(val) \ | |
166 | if ((val) > pst->texthigh) pst->texthigh = (val); | |
167 | ||
168 | #define SWAP_STBHDR(hdrp, abfd) \ | |
169 | { \ | |
170 | (hdrp)->fmtno = bfd_get_16(abfd, (unsigned char *)&(hdrp)->fmtno); \ | |
171 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
172 | (hdrp)->offset = bfd_get_32(abfd, (unsigned char *)&(hdrp)->offset); \ | |
173 | (hdrp)->nsym = bfd_get_32(abfd, (unsigned char *)&(hdrp)->nsym); \ | |
174 | } | |
175 | #define SWAP_STBSYM(symp, abfd) \ | |
176 | { \ | |
177 | (symp)->value = bfd_get_32(abfd, (unsigned char *)&(symp)->value); \ | |
178 | (symp)->type = bfd_get_16(abfd, (unsigned char *)&(symp)->type); \ | |
179 | (symp)->stroff = bfd_get_32(abfd, (unsigned char *)&(symp)->stroff); \ | |
180 | } | |
181 | #define N_DATA 0 | |
182 | #define N_BSS 1 | |
183 | #define N_RDATA 2 | |
184 | #define N_IDATA 3 | |
185 | #define N_TEXT 4 | |
186 | #define N_ABS 6 | |
187 | ||
188 | static void | |
d4f3574e | 189 | record_minimal_symbol (name, address, type, objfile) |
c906108c SS |
190 | char *name; |
191 | CORE_ADDR address; | |
192 | int type; | |
193 | struct objfile *objfile; | |
c906108c SS |
194 | { |
195 | enum minimal_symbol_type ms_type; | |
196 | ||
197 | switch (type) | |
198 | { | |
199 | case N_TEXT: | |
c5aa993b | 200 | ms_type = mst_text; |
b8fbeb18 | 201 | address += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b | 202 | break; |
c906108c | 203 | case N_DATA: |
c5aa993b JM |
204 | ms_type = mst_data; |
205 | break; | |
c906108c | 206 | case N_BSS: |
c5aa993b JM |
207 | ms_type = mst_bss; |
208 | break; | |
c906108c | 209 | case N_RDATA: |
c5aa993b JM |
210 | ms_type = mst_bss; |
211 | break; | |
212 | case N_IDATA: | |
213 | ms_type = mst_data; | |
214 | break; | |
c906108c | 215 | case N_ABS: |
c5aa993b JM |
216 | ms_type = mst_abs; |
217 | break; | |
c906108c | 218 | default: |
c5aa993b JM |
219 | ms_type = mst_unknown; |
220 | break; | |
221 | } | |
c906108c SS |
222 | |
223 | prim_record_minimal_symbol (name, address, ms_type, objfile); | |
224 | } | |
225 | ||
226 | /* read and process .stb file and store in minimal symbol table */ | |
227 | typedef char mhhdr[80]; | |
c5aa993b JM |
228 | struct stbhdr |
229 | { | |
230 | mhhdr comhdr; | |
231 | char *name; | |
232 | short fmtno; | |
233 | int crc; | |
234 | int offset; | |
235 | int nsym; | |
236 | char *pad; | |
237 | }; | |
238 | struct stbsymbol | |
239 | { | |
240 | int value; | |
241 | short type; | |
242 | int stroff; | |
243 | }; | |
c906108c SS |
244 | #define STBSYMSIZE 10 |
245 | ||
246 | static void | |
d4f3574e | 247 | read_minimal_symbols (objfile) |
c906108c | 248 | struct objfile *objfile; |
c906108c | 249 | { |
c5aa993b JM |
250 | FILE *fp; |
251 | bfd *abfd; | |
252 | struct stbhdr hdr; | |
253 | struct stbsymbol sym; | |
254 | int ch, i, j, off; | |
255 | char buf[64], buf1[128]; | |
256 | ||
c906108c | 257 | fp = objfile->auxf1; |
c5aa993b JM |
258 | if (fp == NULL) |
259 | return; | |
c906108c | 260 | abfd = objfile->obfd; |
c5aa993b | 261 | fread (&hdr.comhdr[0], sizeof (mhhdr), 1, fp); |
c906108c | 262 | i = 0; |
c5aa993b JM |
263 | ch = getc (fp); |
264 | while (ch != -1) | |
265 | { | |
266 | buf[i] = (char) ch; | |
267 | i++; | |
268 | if (ch == 0) | |
269 | break; | |
270 | ch = getc (fp); | |
271 | }; | |
272 | if (i % 2) | |
273 | ch = getc (fp); | |
c906108c SS |
274 | hdr.name = &buf[0]; |
275 | ||
c5aa993b JM |
276 | fread (&hdr.fmtno, sizeof (hdr.fmtno), 1, fp); |
277 | fread (&hdr.crc, sizeof (hdr.crc), 1, fp); | |
278 | fread (&hdr.offset, sizeof (hdr.offset), 1, fp); | |
279 | fread (&hdr.nsym, sizeof (hdr.nsym), 1, fp); | |
280 | SWAP_STBHDR (&hdr, abfd); | |
281 | ||
c906108c | 282 | /* read symbols */ |
c5aa993b | 283 | init_minimal_symbol_collection (); |
c906108c | 284 | off = hdr.offset; |
c5aa993b JM |
285 | for (i = hdr.nsym; i > 0; i--) |
286 | { | |
287 | fseek (fp, (long) off, 0); | |
288 | fread (&sym.value, sizeof (sym.value), 1, fp); | |
289 | fread (&sym.type, sizeof (sym.type), 1, fp); | |
290 | fread (&sym.stroff, sizeof (sym.stroff), 1, fp); | |
291 | SWAP_STBSYM (&sym, abfd); | |
292 | fseek (fp, (long) sym.stroff, 0); | |
293 | j = 0; | |
294 | ch = getc (fp); | |
295 | while (ch != -1) | |
296 | { | |
297 | buf1[j] = (char) ch; | |
298 | j++; | |
299 | if (ch == 0) | |
300 | break; | |
301 | ch = getc (fp); | |
302 | }; | |
d4f3574e | 303 | record_minimal_symbol (buf1, sym.value, sym.type & 7, objfile); |
c5aa993b | 304 | off += STBSYMSIZE; |
c906108c | 305 | }; |
c906108c SS |
306 | install_minimal_symbols (objfile); |
307 | return; | |
308 | } | |
309 | \f | |
310 | /* Scan and build partial symbols for a symbol file. | |
311 | We have been initialized by a call to os9k_symfile_init, which | |
312 | put all the relevant info into a "struct os9k_symfile_info", | |
313 | hung off the objfile structure. | |
314 | ||
c906108c SS |
315 | MAINLINE is true if we are reading the main symbol |
316 | table (as opposed to a shared lib or dynamically loaded file). */ | |
317 | ||
318 | static void | |
96baa820 | 319 | os9k_symfile_read (objfile, mainline) |
c906108c | 320 | struct objfile *objfile; |
c5aa993b | 321 | int mainline; /* FIXME comments above */ |
c906108c SS |
322 | { |
323 | bfd *sym_bfd; | |
324 | struct cleanup *back_to; | |
325 | ||
326 | sym_bfd = objfile->obfd; | |
327 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
c5aa993b JM |
328 | if (mainline || objfile->global_psymbols.size == 0 || |
329 | objfile->static_psymbols.size == 0) | |
c906108c SS |
330 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
331 | ||
332 | free_pending_blocks (); | |
a0b3c4fd | 333 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c | 334 | |
56e290f4 | 335 | make_cleanup_discard_minimal_symbols (); |
d4f3574e | 336 | read_minimal_symbols (objfile); |
c906108c SS |
337 | |
338 | /* Now that the symbol table data of the executable file are all in core, | |
339 | process them and define symbols accordingly. */ | |
d4f3574e | 340 | read_os9k_psymtab (objfile, |
c906108c SS |
341 | DBX_TEXT_ADDR (objfile), |
342 | DBX_TEXT_SIZE (objfile)); | |
343 | ||
344 | do_cleanups (back_to); | |
345 | } | |
346 | ||
347 | /* Initialize anything that needs initializing when a completely new | |
348 | symbol file is specified (not just adding some symbols from another | |
349 | file, e.g. a shared library). */ | |
350 | ||
351 | static void | |
352 | os9k_new_init (ignore) | |
353 | struct objfile *ignore; | |
354 | { | |
355 | stabsread_new_init (); | |
356 | buildsym_new_init (); | |
357 | psymfile_depth = 0; | |
358 | /* | |
c5aa993b JM |
359 | init_header_files (); |
360 | */ | |
c906108c SS |
361 | } |
362 | ||
363 | /* os9k_symfile_init () | |
364 | It is passed a struct objfile which contains, among other things, | |
365 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
366 | to "private data" which we fill with goodies. | |
367 | ||
368 | Since BFD doesn't know how to read debug symbols in a format-independent | |
369 | way (and may never do so...), we have to do it ourselves. We will never | |
370 | be called unless this is an a.out (or very similar) file. | |
371 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
372 | ||
373 | static void | |
374 | os9k_symfile_init (objfile) | |
375 | struct objfile *objfile; | |
376 | { | |
377 | bfd *sym_bfd = objfile->obfd; | |
378 | char *name = bfd_get_filename (sym_bfd); | |
379 | char dbgname[512], stbname[512]; | |
380 | FILE *symfile = 0; | |
381 | FILE *minfile = 0; | |
382 | asection *text_sect; | |
383 | ||
c5aa993b JM |
384 | strcpy (dbgname, name); |
385 | strcat (dbgname, ".dbg"); | |
386 | strcpy (stbname, name); | |
387 | strcat (stbname, ".stb"); | |
c906108c | 388 | |
c5aa993b JM |
389 | if ((symfile = fopen (dbgname, "r")) == NULL) |
390 | { | |
391 | warning ("Symbol file %s not found", dbgname); | |
392 | } | |
c906108c SS |
393 | objfile->auxf2 = symfile; |
394 | ||
c5aa993b JM |
395 | if ((minfile = fopen (stbname, "r")) == NULL) |
396 | { | |
397 | warning ("Symbol file %s not found", stbname); | |
398 | } | |
c906108c SS |
399 | objfile->auxf1 = minfile; |
400 | ||
401 | /* Allocate struct to keep track of the symfile */ | |
402 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
c5aa993b | 403 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); |
c906108c SS |
404 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
405 | ||
406 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
407 | if (!text_sect) | |
408 | error ("Can't find .text section in file"); | |
409 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); | |
410 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
411 | ||
c5aa993b JM |
412 | DBX_SYMBOL_SIZE (objfile) = 0; /* variable size symbol */ |
413 | DBX_SYMCOUNT (objfile) = 0; /* used to be bfd_get_symcount(sym_bfd) */ | |
414 | DBX_SYMTAB_OFFSET (objfile) = 0; /* used to be SYMBOL_TABLE_OFFSET */ | |
c906108c SS |
415 | } |
416 | ||
417 | /* Perform any local cleanups required when we are done with a particular | |
418 | objfile. I.E, we are in the process of discarding all symbol information | |
419 | for an objfile, freeing up all memory held for it, and unlinking the | |
420 | objfile struct from the global list of known objfiles. */ | |
421 | ||
422 | static void | |
423 | os9k_symfile_finish (objfile) | |
424 | struct objfile *objfile; | |
425 | { | |
426 | if (objfile->sym_stab_info != NULL) | |
427 | { | |
c5aa993b | 428 | mfree (objfile->md, objfile->sym_stab_info); |
c906108c SS |
429 | } |
430 | /* | |
c5aa993b JM |
431 | free_header_files (); |
432 | */ | |
c906108c | 433 | } |
c906108c | 434 | \f |
c5aa993b JM |
435 | |
436 | struct st_dbghdr | |
437 | { | |
c906108c SS |
438 | int sync; |
439 | short rev; | |
440 | int crc; | |
441 | short os; | |
442 | short cpu; | |
443 | }; | |
444 | #define SYNC (int)0xefbefeca | |
445 | ||
446 | #define SWAP_DBGHDR(hdrp, abfd) \ | |
447 | { \ | |
448 | (hdrp)->sync = bfd_get_32(abfd, (unsigned char *)&(hdrp)->sync); \ | |
449 | (hdrp)->rev = bfd_get_16(abfd, (unsigned char *)&(hdrp)->rev); \ | |
450 | (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \ | |
451 | (hdrp)->os = bfd_get_16(abfd, (unsigned char *)&(hdrp)->os); \ | |
452 | (hdrp)->cpu = bfd_get_16(abfd, (unsigned char *)&(hdrp)->cpu); \ | |
453 | } | |
454 | ||
455 | #define N_SYM_CMPLR 0 | |
456 | #define N_SYM_SLINE 1 | |
457 | #define N_SYM_SYM 2 | |
458 | #define N_SYM_LBRAC 3 | |
459 | #define N_SYM_RBRAC 4 | |
460 | #define N_SYM_SE 5 | |
461 | ||
c5aa993b JM |
462 | struct internal_symstruct |
463 | { | |
464 | short n_type; | |
465 | short n_desc; | |
466 | long n_value; | |
467 | char *n_strx; | |
468 | }; | |
c906108c SS |
469 | static struct internal_symstruct symbol; |
470 | static struct internal_symstruct *symbuf = &symbol; | |
471 | static char strbuf[4096]; | |
472 | static struct st_dbghdr dbghdr; | |
473 | static short cmplrid; | |
474 | ||
475 | #define VER_PRE_ULTRAC ((short)4) | |
476 | #define VER_ULTRAC ((short)5) | |
477 | ||
478 | static int | |
479 | fill_sym (dbg_file, abfd) | |
480 | FILE *dbg_file; | |
481 | bfd *abfd; | |
482 | { | |
c5aa993b JM |
483 | short si, nmask; |
484 | long li; | |
485 | int ii; | |
486 | char *p; | |
c906108c | 487 | |
c5aa993b | 488 | int nbytes = fread (&si, sizeof (si), 1, dbg_file); |
c906108c SS |
489 | if (nbytes == 0) |
490 | return 0; | |
491 | if (nbytes < 0) | |
492 | perror_with_name ("reading .dbg file."); | |
493 | symbuf->n_desc = 0; | |
494 | symbuf->n_value = 0; | |
495 | symbuf->n_strx = NULL; | |
c5aa993b | 496 | symbuf->n_type = bfd_get_16 (abfd, (unsigned char *) &si); |
c906108c SS |
497 | symbuf->n_type = 0xf & symbuf->n_type; |
498 | switch (symbuf->n_type) | |
499 | { | |
500 | case N_SYM_CMPLR: | |
c5aa993b JM |
501 | fread (&si, sizeof (si), 1, dbg_file); |
502 | symbuf->n_desc = bfd_get_16 (abfd, (unsigned char *) &si); | |
c906108c SS |
503 | cmplrid = symbuf->n_desc & 0xff; |
504 | break; | |
505 | case N_SYM_SLINE: | |
c5aa993b JM |
506 | fread (&li, sizeof (li), 1, dbg_file); |
507 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
508 | fread (&li, sizeof (li), 1, dbg_file); | |
509 | li = bfd_get_32 (abfd, (unsigned char *) &li); | |
510 | symbuf->n_strx = (char *) (li >> 12); | |
c906108c SS |
511 | symbuf->n_desc = li & 0xfff; |
512 | break; | |
513 | case N_SYM_SYM: | |
c5aa993b JM |
514 | fread (&li, sizeof (li), 1, dbg_file); |
515 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c | 516 | si = 0; |
c5aa993b JM |
517 | do |
518 | { | |
519 | ii = getc (dbg_file); | |
520 | strbuf[si++] = (char) ii; | |
521 | } | |
522 | while (ii != 0 || si % 2 != 0); | |
c906108c SS |
523 | symbuf->n_strx = strbuf; |
524 | p = (char *) strchr (strbuf, ':'); | |
c5aa993b JM |
525 | if (!p) |
526 | break; | |
c906108c SS |
527 | if ((p[1] == 'F' || p[1] == 'f') && cmplrid == VER_PRE_ULTRAC) |
528 | { | |
c5aa993b JM |
529 | fread (&si, sizeof (si), 1, dbg_file); |
530 | nmask = bfd_get_16 (abfd, (unsigned char *) &si); | |
531 | for (ii = 0; ii < nmask; ii++) | |
532 | fread (&si, sizeof (si), 1, dbg_file); | |
c906108c SS |
533 | } |
534 | break; | |
535 | case N_SYM_LBRAC: | |
c5aa993b JM |
536 | fread (&li, sizeof (li), 1, dbg_file); |
537 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
538 | break; |
539 | case N_SYM_RBRAC: | |
c5aa993b JM |
540 | fread (&li, sizeof (li), 1, dbg_file); |
541 | symbuf->n_value = bfd_get_32 (abfd, (unsigned char *) &li); | |
c906108c SS |
542 | break; |
543 | case N_SYM_SE: | |
544 | break; | |
545 | } | |
c5aa993b | 546 | return 1; |
c906108c SS |
547 | } |
548 | \f | |
549 | /* Given pointers to an a.out symbol table in core containing dbx | |
550 | style data, setup partial_symtab's describing each source file for | |
551 | which debugging information is available. | |
d4f3574e | 552 | SYMFILE_NAME is the name of the file we are reading from. */ |
c906108c SS |
553 | |
554 | static void | |
d4f3574e | 555 | read_os9k_psymtab (objfile, text_addr, text_size) |
c906108c SS |
556 | struct objfile *objfile; |
557 | CORE_ADDR text_addr; | |
558 | int text_size; | |
559 | { | |
c5aa993b | 560 | register struct internal_symstruct *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c SS |
561 | register char *namestring; |
562 | int past_first_source_file = 0; | |
563 | CORE_ADDR last_o_file_start = 0; | |
564 | #if 0 | |
565 | struct cleanup *back_to; | |
566 | #endif | |
567 | bfd *abfd; | |
568 | FILE *fp; | |
569 | ||
570 | /* End of the text segment of the executable file. */ | |
571 | static CORE_ADDR end_of_text_addr; | |
572 | ||
573 | /* Current partial symtab */ | |
574 | static struct partial_symtab *pst = 0; | |
575 | ||
576 | /* List of current psymtab's include files */ | |
577 | char **psymtab_include_list; | |
578 | int includes_allocated; | |
579 | int includes_used; | |
580 | ||
581 | /* Index within current psymtab dependency list */ | |
582 | struct partial_symtab **dependency_list; | |
583 | int dependencies_used, dependencies_allocated; | |
584 | ||
585 | includes_allocated = 30; | |
586 | includes_used = 0; | |
587 | psymtab_include_list = (char **) alloca (includes_allocated * | |
588 | sizeof (char *)); | |
589 | ||
590 | dependencies_allocated = 30; | |
591 | dependencies_used = 0; | |
592 | dependency_list = | |
593 | (struct partial_symtab **) alloca (dependencies_allocated * | |
594 | sizeof (struct partial_symtab *)); | |
595 | ||
596 | last_source_file = NULL; | |
597 | ||
598 | #ifdef END_OF_TEXT_DEFAULT | |
599 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
600 | #else | |
b8fbeb18 | 601 | end_of_text_addr = text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)) |
c5aa993b | 602 | + text_size; /* Relocate */ |
c906108c SS |
603 | #endif |
604 | ||
605 | abfd = objfile->obfd; | |
c5aa993b JM |
606 | fp = objfile->auxf2; |
607 | if (!fp) | |
608 | return; | |
609 | ||
610 | fread (&dbghdr.sync, sizeof (dbghdr.sync), 1, fp); | |
611 | fread (&dbghdr.rev, sizeof (dbghdr.rev), 1, fp); | |
612 | fread (&dbghdr.crc, sizeof (dbghdr.crc), 1, fp); | |
613 | fread (&dbghdr.os, sizeof (dbghdr.os), 1, fp); | |
614 | fread (&dbghdr.cpu, sizeof (dbghdr.cpu), 1, fp); | |
615 | SWAP_DBGHDR (&dbghdr, abfd); | |
c906108c SS |
616 | |
617 | symnum = 0; | |
c5aa993b | 618 | while (1) |
c906108c | 619 | { |
c5aa993b JM |
620 | int ret; |
621 | long cursymoffset; | |
c906108c SS |
622 | |
623 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b JM |
624 | QUIT; /* allow this to be interruptable */ |
625 | cursymoffset = ftell (objfile->auxf2); | |
626 | ret = fill_sym (objfile->auxf2, abfd); | |
627 | if (ret <= 0) | |
628 | break; | |
629 | else | |
630 | symnum++; | |
c906108c SS |
631 | bufp = symbuf; |
632 | ||
633 | /* Special case to speed up readin. */ | |
c5aa993b JM |
634 | if (bufp->n_type == (short) N_SYM_SLINE) |
635 | continue; | |
c906108c SS |
636 | |
637 | #define CUR_SYMBOL_VALUE bufp->n_value | |
638 | /* partial-stab.h */ | |
639 | ||
640 | switch (bufp->n_type) | |
641 | { | |
c5aa993b | 642 | char *p; |
c906108c SS |
643 | |
644 | case N_SYM_CMPLR: | |
645 | continue; | |
646 | ||
647 | case N_SYM_SE: | |
b8fbeb18 | 648 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
649 | if (psymfile_depth == 1 && pst) |
650 | { | |
651 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
652 | symnum, CUR_SYMBOL_VALUE, |
653 | dependency_list, dependencies_used); | |
c906108c SS |
654 | pst = (struct partial_symtab *) 0; |
655 | includes_used = 0; | |
656 | dependencies_used = 0; | |
657 | } | |
c5aa993b | 658 | psymfile_depth--; |
c906108c SS |
659 | continue; |
660 | ||
c5aa993b | 661 | case N_SYM_SYM: /* Typedef or automatic variable. */ |
c906108c | 662 | namestring = bufp->n_strx; |
c5aa993b JM |
663 | p = (char *) strchr (namestring, ':'); |
664 | if (!p) | |
665 | continue; /* Not a debugging symbol. */ | |
c906108c SS |
666 | |
667 | /* Main processing section for debugging symbols which | |
668 | the initial read through the symbol tables needs to worry | |
669 | about. If we reach this point, the symbol which we are | |
670 | considering is definitely one we are interested in. | |
671 | p must also contain the (valid) index into the namestring | |
672 | which indicates the debugging type symbol. */ | |
673 | ||
674 | switch (p[1]) | |
675 | { | |
c5aa993b | 676 | case 'S': |
c906108c SS |
677 | { |
678 | unsigned long valu; | |
c5aa993b | 679 | enum language tmp_language; |
c906108c SS |
680 | char *str, *p; |
681 | int n; | |
c5aa993b | 682 | |
c906108c SS |
683 | valu = CUR_SYMBOL_VALUE; |
684 | if (valu) | |
b8fbeb18 | 685 | valu += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
686 | past_first_source_file = 1; |
687 | ||
c5aa993b JM |
688 | p = strchr (namestring, ':'); |
689 | if (p) | |
690 | n = p - namestring; | |
691 | else | |
692 | n = strlen (namestring); | |
693 | str = alloca (n + 1); | |
694 | strncpy (str, namestring, n); | |
695 | str[n] = '\0'; | |
c906108c | 696 | |
c5aa993b | 697 | if (psymfile_depth == 0) |
c906108c | 698 | { |
c5aa993b | 699 | if (!pst) |
d4f3574e | 700 | pst = os9k_start_psymtab (objfile, |
c5aa993b JM |
701 | str, valu, |
702 | cursymoffset, | |
703 | symnum - 1, | |
704 | objfile->global_psymbols.next, | |
705 | objfile->static_psymbols.next); | |
c906108c | 706 | } |
c5aa993b JM |
707 | else |
708 | { /* this is a include file */ | |
709 | tmp_language = deduce_language_from_filename (str); | |
710 | if (tmp_language != language_unknown | |
711 | && (tmp_language != language_c | |
712 | || psymtab_language != language_cplus)) | |
713 | psymtab_language = tmp_language; | |
c906108c | 714 | |
c5aa993b JM |
715 | /* |
716 | if (pst && STREQ (str, pst->filename)) | |
717 | continue; | |
718 | { | |
719 | register int i; | |
720 | for (i = 0; i < includes_used; i++) | |
721 | if (STREQ (str, psymtab_include_list[i])) | |
722 | { | |
723 | i = -1; | |
724 | break; | |
725 | } | |
726 | if (i == -1) | |
727 | continue; | |
728 | } | |
729 | */ | |
730 | ||
731 | psymtab_include_list[includes_used++] = str; | |
732 | if (includes_used >= includes_allocated) | |
733 | { | |
734 | char **orig = psymtab_include_list; | |
735 | ||
736 | psymtab_include_list = (char **) | |
737 | alloca ((includes_allocated *= 2) * sizeof (char *)); | |
738 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
739 | includes_used * sizeof (char *)); | |
740 | } | |
c906108c | 741 | |
c5aa993b JM |
742 | } |
743 | psymfile_depth++; | |
c906108c SS |
744 | continue; |
745 | } | |
746 | ||
747 | case 'v': | |
748 | add_psymbol_to_list (namestring, p - namestring, | |
749 | VAR_NAMESPACE, LOC_STATIC, | |
750 | &objfile->static_psymbols, | |
751 | 0, CUR_SYMBOL_VALUE, | |
752 | psymtab_language, objfile); | |
753 | continue; | |
754 | case 'V': | |
755 | add_psymbol_to_list (namestring, p - namestring, | |
756 | VAR_NAMESPACE, LOC_STATIC, | |
757 | &objfile->global_psymbols, | |
758 | 0, CUR_SYMBOL_VALUE, | |
759 | psymtab_language, objfile); | |
760 | continue; | |
761 | ||
762 | case 'T': | |
763 | if (p != namestring) /* a name is there, not just :T... */ | |
764 | { | |
765 | add_psymbol_to_list (namestring, p - namestring, | |
766 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
767 | &objfile->static_psymbols, | |
768 | CUR_SYMBOL_VALUE, 0, | |
769 | psymtab_language, objfile); | |
770 | if (p[2] == 't') | |
771 | { | |
772 | /* Also a typedef with the same name. */ | |
773 | add_psymbol_to_list (namestring, p - namestring, | |
774 | VAR_NAMESPACE, LOC_TYPEDEF, | |
775 | &objfile->static_psymbols, | |
c5aa993b | 776 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c SS |
777 | objfile); |
778 | p += 1; | |
779 | } | |
780 | /* The semantics of C++ state that "struct foo { ... }" | |
781 | also defines a typedef for "foo". Unfortuantely, cfront | |
782 | never makes the typedef when translating from C++ to C. | |
783 | We make the typedef here so that "ptype foo" works as | |
784 | expected for cfront translated code. */ | |
785 | else if (psymtab_language == language_cplus) | |
c5aa993b | 786 | { |
c906108c SS |
787 | /* Also a typedef with the same name. */ |
788 | add_psymbol_to_list (namestring, p - namestring, | |
789 | VAR_NAMESPACE, LOC_TYPEDEF, | |
790 | &objfile->static_psymbols, | |
c5aa993b | 791 | CUR_SYMBOL_VALUE, 0, psymtab_language, |
c906108c | 792 | objfile); |
c5aa993b | 793 | } |
c906108c SS |
794 | } |
795 | goto check_enum; | |
796 | case 't': | |
797 | if (p != namestring) /* a name is there, not just :T... */ | |
798 | { | |
799 | add_psymbol_to_list (namestring, p - namestring, | |
800 | VAR_NAMESPACE, LOC_TYPEDEF, | |
801 | &objfile->static_psymbols, | |
802 | CUR_SYMBOL_VALUE, 0, | |
803 | psymtab_language, objfile); | |
804 | } | |
805 | check_enum: | |
806 | /* If this is an enumerated type, we need to | |
c5aa993b JM |
807 | add all the enum constants to the partial symbol |
808 | table. This does not cover enums without names, e.g. | |
809 | "enum {a, b} c;" in C, but fortunately those are | |
810 | rare. There is no way for GDB to find those from the | |
811 | enum type without spending too much time on it. Thus | |
812 | to solve this problem, the compiler needs to put out the | |
813 | enum in a nameless type. GCC2 does this. */ | |
c906108c SS |
814 | |
815 | /* We are looking for something of the form | |
c5aa993b JM |
816 | <name> ":" ("t" | "T") [<number> "="] "e" <size> |
817 | {<constant> ":" <value> ","} ";". */ | |
c906108c SS |
818 | |
819 | /* Skip over the colon and the 't' or 'T'. */ | |
820 | p += 2; | |
821 | /* This type may be given a number. Also, numbers can come | |
c5aa993b | 822 | in pairs like (0,26). Skip over it. */ |
c906108c SS |
823 | while ((*p >= '0' && *p <= '9') |
824 | || *p == '(' || *p == ',' || *p == ')' | |
825 | || *p == '=') | |
826 | p++; | |
827 | ||
828 | if (*p++ == 'e') | |
829 | { | |
830 | /* We have found an enumerated type. skip size */ | |
c5aa993b JM |
831 | while (*p >= '0' && *p <= '9') |
832 | p++; | |
c906108c SS |
833 | /* According to comments in read_enum_type |
834 | a comma could end it instead of a semicolon. | |
835 | I don't know where that happens. | |
836 | Accept either. */ | |
837 | while (*p && *p != ';' && *p != ',') | |
838 | { | |
839 | char *q; | |
840 | ||
841 | /* Check for and handle cretinous dbx symbol name | |
c5aa993b JM |
842 | continuation! |
843 | if (*p == '\\') | |
844 | p = next_symbol_text (objfile); | |
845 | */ | |
c906108c SS |
846 | |
847 | /* Point to the character after the name | |
c5aa993b | 848 | of the enum constant. */ |
c906108c SS |
849 | for (q = p; *q && *q != ':'; q++) |
850 | ; | |
851 | /* Note that the value doesn't matter for | |
c5aa993b | 852 | enum constants in psymtabs, just in symtabs. */ |
c906108c SS |
853 | add_psymbol_to_list (p, q - p, |
854 | VAR_NAMESPACE, LOC_CONST, | |
855 | &objfile->static_psymbols, 0, | |
856 | 0, psymtab_language, objfile); | |
857 | /* Point past the name. */ | |
858 | p = q; | |
859 | /* Skip over the value. */ | |
860 | while (*p && *p != ',') | |
861 | p++; | |
862 | /* Advance past the comma. */ | |
863 | if (*p) | |
864 | p++; | |
865 | } | |
866 | } | |
867 | continue; | |
868 | case 'c': | |
869 | /* Constant, e.g. from "const" in Pascal. */ | |
870 | add_psymbol_to_list (namestring, p - namestring, | |
871 | VAR_NAMESPACE, LOC_CONST, | |
c5aa993b | 872 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
873 | 0, psymtab_language, objfile); |
874 | continue; | |
875 | ||
876 | case 'f': | |
b8fbeb18 | 877 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
878 | if (pst && pst->textlow == 0) |
879 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
880 | |
881 | add_psymbol_to_list (namestring, p - namestring, | |
882 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 883 | &objfile->static_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
884 | 0, psymtab_language, objfile); |
885 | continue; | |
886 | ||
887 | case 'F': | |
b8fbeb18 | 888 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
889 | if (pst && pst->textlow == 0) |
890 | pst->textlow = CUR_SYMBOL_VALUE; | |
c906108c SS |
891 | |
892 | add_psymbol_to_list (namestring, p - namestring, | |
893 | VAR_NAMESPACE, LOC_BLOCK, | |
c5aa993b | 894 | &objfile->global_psymbols, CUR_SYMBOL_VALUE, |
c906108c SS |
895 | 0, psymtab_language, objfile); |
896 | continue; | |
897 | ||
898 | case 'p': | |
899 | case 'l': | |
c5aa993b | 900 | case 's': |
c906108c SS |
901 | continue; |
902 | ||
903 | case ':': | |
904 | /* It is a C++ nested symbol. We don't need to record it | |
c5aa993b JM |
905 | (I don't think); if we try to look up foo::bar::baz, |
906 | then symbols for the symtab containing foo should get | |
907 | read in, I think. */ | |
c906108c | 908 | /* Someone says sun cc puts out symbols like |
c5aa993b JM |
909 | /foo/baz/maclib::/usr/local/bin/maclib, |
910 | which would get here with a symbol type of ':'. */ | |
c906108c SS |
911 | continue; |
912 | ||
913 | default: | |
914 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
c5aa993b JM |
915 | of a continued stab can show up here. The question is |
916 | whether they ever can mimic a normal stab--it would be | |
917 | nice if not, since we certainly don't want to spend the | |
918 | time searching to the end of every string looking for | |
919 | a backslash. */ | |
c906108c SS |
920 | |
921 | complain (&unknown_symchar_complaint, p[1]); | |
922 | continue; | |
923 | } | |
924 | ||
925 | case N_SYM_RBRAC: | |
b8fbeb18 | 926 | CUR_SYMBOL_VALUE += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 927 | #ifdef HANDLE_RBRAC |
c5aa993b | 928 | HANDLE_RBRAC (CUR_SYMBOL_VALUE); |
c906108c SS |
929 | continue; |
930 | #endif | |
931 | case N_SYM_LBRAC: | |
932 | continue; | |
933 | ||
934 | default: | |
935 | /* If we haven't found it yet, ignore it. It's probably some | |
936 | new type we don't know about yet. */ | |
937 | complain (&unknown_symtype_complaint, | |
938 | local_hex_string ((unsigned long) bufp->n_type)); | |
939 | continue; | |
940 | } | |
941 | } | |
942 | ||
943 | DBX_SYMCOUNT (objfile) = symnum; | |
944 | ||
945 | /* If there's stuff to be cleaned up, clean it up. */ | |
946 | if (DBX_SYMCOUNT (objfile) > 0 | |
947 | /*FIXME, does this have a bug at start address 0? */ | |
948 | && last_o_file_start | |
c5aa993b JM |
949 | && objfile->ei.entry_point < bufp->n_value |
950 | && objfile->ei.entry_point >= last_o_file_start) | |
c906108c | 951 | { |
c5aa993b JM |
952 | objfile->ei.entry_file_lowpc = last_o_file_start; |
953 | objfile->ei.entry_file_highpc = bufp->n_value; | |
c906108c SS |
954 | } |
955 | ||
956 | if (pst) | |
957 | { | |
958 | os9k_end_psymtab (pst, psymtab_include_list, includes_used, | |
c5aa993b JM |
959 | symnum, end_of_text_addr, |
960 | dependency_list, dependencies_used); | |
c906108c SS |
961 | } |
962 | /* | |
c5aa993b JM |
963 | do_cleanups (back_to); |
964 | */ | |
c906108c SS |
965 | } |
966 | ||
967 | /* Allocate and partially fill a partial symtab. It will be | |
968 | completely filled at the end of the symbol list. | |
969 | ||
970 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
971 | is the address relative to which its symbols are (incremental) or 0 | |
972 | (normal). */ | |
973 | ||
974 | ||
975 | static struct partial_symtab * | |
d4f3574e | 976 | os9k_start_psymtab (objfile, |
c5aa993b | 977 | filename, textlow, ldsymoff, ldsymcnt, global_syms, static_syms) |
c906108c | 978 | struct objfile *objfile; |
c906108c SS |
979 | char *filename; |
980 | CORE_ADDR textlow; | |
981 | int ldsymoff; | |
982 | int ldsymcnt; | |
983 | struct partial_symbol **global_syms; | |
984 | struct partial_symbol **static_syms; | |
985 | { | |
986 | struct partial_symtab *result = | |
d4f3574e | 987 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 988 | filename, textlow, global_syms, static_syms); |
c906108c SS |
989 | |
990 | result->read_symtab_private = (char *) | |
c5aa993b | 991 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); |
c906108c | 992 | |
c5aa993b JM |
993 | LDSYMOFF (result) = ldsymoff; |
994 | LDSYMCNT (result) = ldsymcnt; | |
c906108c SS |
995 | result->read_symtab = os9k_psymtab_to_symtab; |
996 | ||
997 | /* Deduce the source language from the filename for this psymtab. */ | |
998 | psymtab_language = deduce_language_from_filename (filename); | |
999 | return result; | |
1000 | } | |
1001 | ||
1002 | /* Close off the current usage of PST. | |
1003 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
1004 | FIXME: List variables and peculiarities of same. */ | |
1005 | ||
1006 | static struct partial_symtab * | |
1007 | os9k_end_psymtab (pst, include_list, num_includes, capping_symbol_cnt, | |
c5aa993b | 1008 | capping_text, dependency_list, number_dependencies) |
c906108c SS |
1009 | struct partial_symtab *pst; |
1010 | char **include_list; | |
1011 | int num_includes; | |
1012 | int capping_symbol_cnt; | |
1013 | CORE_ADDR capping_text; | |
1014 | struct partial_symtab **dependency_list; | |
1015 | int number_dependencies; | |
1016 | /* struct partial_symbol *capping_global, *capping_static; */ | |
1017 | { | |
1018 | int i; | |
1019 | struct partial_symtab *p1; | |
c5aa993b | 1020 | struct objfile *objfile = pst->objfile; |
c906108c SS |
1021 | |
1022 | if (capping_symbol_cnt != -1) | |
c5aa993b | 1023 | LDSYMCNT (pst) = capping_symbol_cnt - LDSYMCNT (pst); |
c906108c SS |
1024 | |
1025 | /* Under Solaris, the N_SO symbols always have a value of 0, | |
1026 | instead of the usual address of the .o file. Therefore, | |
1027 | we have to do some tricks to fill in texthigh and textlow. | |
1028 | The first trick is in partial-stab.h: if we see a static | |
1029 | or global function, and the textlow for the current pst | |
1030 | is still 0, then we use that function's address for | |
1031 | the textlow of the pst. | |
1032 | ||
1033 | Now, to fill in texthigh, we remember the last function seen | |
1034 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1035 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1036 | to here via the misc_info field. Therefore, we can fill in | |
1037 | a reliable texthigh by taking the address plus size of the | |
1038 | last function in the file. | |
1039 | ||
1040 | Unfortunately, that does not cover the case where the last function | |
1041 | in the file is static. See the paragraph below for more comments | |
1042 | on this situation. | |
1043 | ||
1044 | Finally, if we have a valid textlow for the current file, we run | |
1045 | down the partial_symtab_list filling in previous texthighs that | |
1046 | are still unknown. */ | |
1047 | ||
c5aa993b JM |
1048 | if (pst->texthigh == 0 && last_function_name) |
1049 | { | |
1050 | char *p; | |
1051 | int n; | |
1052 | struct minimal_symbol *minsym; | |
1053 | ||
1054 | p = strchr (last_function_name, ':'); | |
1055 | if (p == NULL) | |
1056 | p = last_function_name; | |
1057 | n = p - last_function_name; | |
1058 | p = alloca (n + 1); | |
1059 | strncpy (p, last_function_name, n); | |
1060 | p[n] = 0; | |
1061 | ||
1062 | minsym = lookup_minimal_symbol (p, NULL, objfile); | |
1063 | ||
1064 | if (minsym) | |
1065 | { | |
1066 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + (long) MSYMBOL_INFO (minsym); | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | /* This file ends with a static function, and it's | |
1071 | difficult to imagine how hard it would be to track down | |
1072 | the elf symbol. Luckily, most of the time no one will notice, | |
1073 | since the next file will likely be compiled with -g, so | |
1074 | the code below will copy the first fuction's start address | |
1075 | back to our texthigh variable. (Also, if this file is the | |
1076 | last one in a dynamically linked program, texthigh already | |
1077 | has the right value.) If the next file isn't compiled | |
1078 | with -g, then the last function in this file winds up owning | |
1079 | all of the text space up to the next -g file, or the end (minus | |
1080 | shared libraries). This only matters for single stepping, | |
1081 | and even then it will still work, except that it will single | |
1082 | step through all of the covered functions, instead of setting | |
1083 | breakpoints around them as it usualy does. This makes it | |
1084 | pretty slow, but at least it doesn't fail. | |
1085 | ||
1086 | We can fix this with a fairly big change to bfd, but we need | |
1087 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1088 | } | |
1089 | last_function_name = NULL; | |
c906108c | 1090 | } |
c906108c SS |
1091 | |
1092 | /* this test will be true if the last .o file is only data */ | |
1093 | if (pst->textlow == 0) | |
1094 | pst->textlow = pst->texthigh; | |
1095 | ||
1096 | /* If we know our own starting text address, then walk through all other | |
1097 | psymtabs for this objfile, and if any didn't know their ending text | |
1098 | address, set it to our starting address. Take care to not set our | |
1099 | own ending address to our starting address, nor to set addresses on | |
1100 | `dependency' files that have both textlow and texthigh zero. */ | |
c5aa993b JM |
1101 | if (pst->textlow) |
1102 | { | |
1103 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
1104 | { | |
1105 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) | |
1106 | { | |
1107 | p1->texthigh = pst->textlow; | |
1108 | /* if this file has only data, then make textlow match texthigh */ | |
1109 | if (p1->textlow == 0) | |
1110 | p1->textlow = p1->texthigh; | |
1111 | } | |
c906108c SS |
1112 | } |
1113 | } | |
c906108c SS |
1114 | |
1115 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1116 | ||
1117 | pst->n_global_syms = | |
1118 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
1119 | pst->n_static_syms = | |
1120 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
1121 | ||
1122 | pst->number_of_dependencies = number_dependencies; | |
1123 | if (number_dependencies) | |
1124 | { | |
1125 | pst->dependencies = (struct partial_symtab **) | |
1126 | obstack_alloc (&objfile->psymbol_obstack, | |
c5aa993b | 1127 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 1128 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 1129 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
1130 | } |
1131 | else | |
1132 | pst->dependencies = 0; | |
1133 | ||
1134 | for (i = 0; i < num_includes; i++) | |
1135 | { | |
1136 | struct partial_symtab *subpst = | |
c5aa993b | 1137 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
1138 | |
1139 | subpst->section_offsets = pst->section_offsets; | |
1140 | subpst->read_symtab_private = | |
c5aa993b JM |
1141 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
1142 | sizeof (struct symloc)); | |
1143 | LDSYMOFF (subpst) = | |
1144 | LDSYMCNT (subpst) = | |
1145 | subpst->textlow = | |
1146 | subpst->texthigh = 0; | |
c906108c SS |
1147 | |
1148 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 1149 | shared by the entire set of include files. FIXME-someday. */ |
c906108c SS |
1150 | subpst->dependencies = (struct partial_symtab **) |
1151 | obstack_alloc (&objfile->psymbol_obstack, | |
1152 | sizeof (struct partial_symtab *)); | |
1153 | subpst->dependencies[0] = pst; | |
1154 | subpst->number_of_dependencies = 1; | |
1155 | ||
1156 | subpst->globals_offset = | |
1157 | subpst->n_global_syms = | |
c5aa993b JM |
1158 | subpst->statics_offset = |
1159 | subpst->n_static_syms = 0; | |
c906108c SS |
1160 | |
1161 | subpst->readin = 0; | |
1162 | subpst->symtab = 0; | |
1163 | subpst->read_symtab = pst->read_symtab; | |
1164 | } | |
1165 | ||
1166 | sort_pst_symbols (pst); | |
1167 | ||
1168 | /* If there is already a psymtab or symtab for a file of this name, | |
1169 | remove it. | |
1170 | (If there is a symtab, more drastic things also happen.) | |
1171 | This happens in VxWorks. */ | |
1172 | free_named_symtabs (pst->filename); | |
1173 | ||
1174 | if (num_includes == 0 | |
c5aa993b JM |
1175 | && number_dependencies == 0 |
1176 | && pst->n_global_syms == 0 | |
1177 | && pst->n_static_syms == 0) | |
1178 | { | |
1179 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1180 | it is on the obstack, but we can forget to chain it on the list. */ | |
1181 | /* Indicate that psymtab was thrown away. */ | |
c906108c | 1182 | |
c5aa993b | 1183 | discard_psymtab (pst); |
c906108c | 1184 | |
c5aa993b JM |
1185 | pst = (struct partial_symtab *) NULL; |
1186 | } | |
c906108c SS |
1187 | return pst; |
1188 | } | |
1189 | \f | |
1190 | static void | |
1191 | os9k_psymtab_to_symtab_1 (pst) | |
1192 | struct partial_symtab *pst; | |
1193 | { | |
1194 | struct cleanup *old_chain; | |
1195 | int i; | |
c5aa993b | 1196 | |
c906108c SS |
1197 | if (!pst) |
1198 | return; | |
1199 | ||
1200 | if (pst->readin) | |
1201 | { | |
1202 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1203 | pst->filename); |
c906108c SS |
1204 | return; |
1205 | } | |
1206 | ||
1207 | /* Read in all partial symtabs on which this one is dependent */ | |
1208 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1209 | if (!pst->dependencies[i]->readin) | |
1210 | { | |
1211 | /* Inform about additional files that need to be read in. */ | |
1212 | if (info_verbose) | |
1213 | { | |
1214 | fputs_filtered (" ", gdb_stdout); | |
1215 | wrap_here (""); | |
1216 | fputs_filtered ("and ", gdb_stdout); | |
1217 | wrap_here (""); | |
1218 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1219 | wrap_here (""); /* Flush output */ |
c906108c SS |
1220 | gdb_flush (gdb_stdout); |
1221 | } | |
1222 | os9k_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1223 | } | |
1224 | ||
c5aa993b | 1225 | if (LDSYMCNT (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
1226 | { |
1227 | /* Init stuff necessary for reading in symbols */ | |
1228 | stabsread_init (); | |
1229 | buildsym_init (); | |
a0b3c4fd | 1230 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1231 | |
1232 | /* Read in this file's symbols */ | |
1233 | os9k_read_ofile_symtab (pst); | |
1234 | sort_symtab_syms (pst->symtab); | |
1235 | do_cleanups (old_chain); | |
1236 | } | |
1237 | ||
1238 | pst->readin = 1; | |
1239 | } | |
1240 | ||
1241 | /* Read in all of the symbols for a given psymtab for real. | |
1242 | Be verbose about it if the user wants that. */ | |
1243 | ||
1244 | static void | |
1245 | os9k_psymtab_to_symtab (pst) | |
1246 | struct partial_symtab *pst; | |
1247 | { | |
1248 | bfd *sym_bfd; | |
1249 | ||
1250 | if (!pst) | |
1251 | return; | |
1252 | ||
1253 | if (pst->readin) | |
1254 | { | |
1255 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 1256 | pst->filename); |
c906108c SS |
1257 | return; |
1258 | } | |
1259 | ||
c5aa993b | 1260 | if (LDSYMCNT (pst) || pst->number_of_dependencies) |
c906108c SS |
1261 | { |
1262 | /* Print the message now, before reading the string table, | |
c5aa993b | 1263 | to avoid disconcerting pauses. */ |
c906108c SS |
1264 | if (info_verbose) |
1265 | { | |
1266 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1267 | gdb_flush (gdb_stdout); | |
1268 | } | |
1269 | ||
1270 | sym_bfd = pst->objfile->obfd; | |
1271 | os9k_psymtab_to_symtab_1 (pst); | |
1272 | ||
1273 | /* Match with global symbols. This only needs to be done once, | |
1274 | after all of the symtabs and dependencies have been read in. */ | |
1275 | scan_file_globals (pst->objfile); | |
1276 | ||
1277 | /* Finish up the debug error message. */ | |
1278 | if (info_verbose) | |
1279 | printf_filtered ("done.\n"); | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | /* Read in a defined section of a specific object file's symbols. */ | |
1284 | static void | |
1285 | os9k_read_ofile_symtab (pst) | |
1286 | struct partial_symtab *pst; | |
1287 | { | |
1288 | register struct internal_symstruct *bufp; | |
1289 | unsigned char type; | |
1290 | unsigned max_symnum; | |
1291 | register bfd *abfd; | |
1292 | struct objfile *objfile; | |
1293 | int sym_offset; /* Offset to start of symbols to read */ | |
1294 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1295 | int text_size; /* Size of text segment for symbols */ | |
c906108c SS |
1296 | FILE *dbg_file; |
1297 | ||
1298 | objfile = pst->objfile; | |
c5aa993b JM |
1299 | sym_offset = LDSYMOFF (pst); |
1300 | max_symnum = LDSYMCNT (pst); | |
c906108c SS |
1301 | text_offset = pst->textlow; |
1302 | text_size = pst->texthigh - pst->textlow; | |
c906108c SS |
1303 | |
1304 | current_objfile = objfile; | |
1305 | subfile_stack = NULL; | |
1306 | last_source_file = NULL; | |
1307 | ||
1308 | abfd = objfile->obfd; | |
1309 | dbg_file = objfile->auxf2; | |
1310 | ||
1311 | #if 0 | |
1312 | /* It is necessary to actually read one symbol *before* the start | |
1313 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1314 | occurs before the N_SO symbol. | |
1315 | Detecting this in read_dbx_symtab | |
1316 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 1317 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c SS |
1318 | { |
1319 | fseek (objefile->auxf2, sym_offset, SEEK_CUR); | |
c5aa993b | 1320 | fill_sym (objfile->auxf2, abfd); |
c906108c SS |
1321 | bufp = symbuf; |
1322 | ||
1323 | processing_gcc_compilation = 0; | |
1324 | if (bufp->n_type == N_TEXT) | |
1325 | { | |
1326 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1327 | processing_gcc_compilation = 1; | |
1328 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1329 | processing_gcc_compilation = 2; | |
1330 | } | |
1331 | ||
1332 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 1333 | producer. */ |
c906108c SS |
1334 | |
1335 | if (processing_gcc_compilation) | |
1336 | { | |
1337 | if (AUTO_DEMANGLING) | |
1338 | { | |
1339 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
1346 | better not check the symbol before it. I'm not this can |
1347 | happen, but it doesn't hurt to check for it. */ | |
c906108c SS |
1348 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
1349 | processing_gcc_compilation = 0; | |
1350 | } | |
1351 | #endif /* 0 */ | |
1352 | ||
c5aa993b | 1353 | fseek (dbg_file, (long) sym_offset, 0); |
c906108c | 1354 | /* |
c5aa993b JM |
1355 | if (bufp->n_type != (unsigned char)N_SYM_SYM) |
1356 | error("First symbol in segment of executable not a source symbol"); | |
1357 | */ | |
c906108c SS |
1358 | |
1359 | for (symnum = 0; symnum < max_symnum; symnum++) | |
1360 | { | |
1361 | QUIT; /* Allow this to be interruptable */ | |
c5aa993b | 1362 | fill_sym (dbg_file, abfd); |
c906108c SS |
1363 | bufp = symbuf; |
1364 | type = bufp->n_type; | |
1365 | ||
c5aa993b | 1366 | os9k_process_one_symbol ((int) type, (int) bufp->n_desc, |
d4f3574e | 1367 | (CORE_ADDR) bufp->n_value, bufp->n_strx, pst->section_offsets, objfile); |
c906108c SS |
1368 | |
1369 | /* We skip checking for a new .o or -l file; that should never | |
1370 | happen in this routine. */ | |
1371 | #if 0 | |
c5aa993b JM |
1372 | else |
1373 | if (type == N_TEXT) | |
c906108c SS |
1374 | { |
1375 | /* I don't think this code will ever be executed, because | |
1376 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1377 | the N_SO symbol which starts this source file. | |
1378 | However, there is no reason not to accept | |
1379 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1380 | ||
1381 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
1382 | processing_gcc_compilation = 1; | |
1383 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
1384 | processing_gcc_compilation = 2; | |
1385 | ||
1386 | if (AUTO_DEMANGLING) | |
1387 | { | |
1388 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1389 | } | |
1390 | } | |
c5aa993b JM |
1391 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
1392 | || type == (unsigned char) N_NBTEXT | |
1393 | ) | |
1394 | { | |
c906108c SS |
1395 | /* Global symbol: see if we came across a dbx defintion for |
1396 | a corresponding symbol. If so, store the value. Remove | |
1397 | syms from the chain when their values are stored, but | |
1398 | search the whole chain, as there may be several syms from | |
1399 | different files with the same name. */ | |
1400 | /* This is probably not true. Since the files will be read | |
1401 | in one at a time, each reference to a global symbol will | |
1402 | be satisfied in each file as it appears. So we skip this | |
1403 | section. */ | |
1404 | ; | |
c5aa993b | 1405 | } |
c906108c SS |
1406 | #endif /* 0 */ |
1407 | } | |
1408 | ||
1409 | current_objfile = NULL; | |
1410 | ||
1411 | /* In a Solaris elf file, this variable, which comes from the | |
1412 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1413 | which comes from pst->textlow is correct. */ | |
1414 | if (last_source_start_addr == 0) | |
1415 | last_source_start_addr = text_offset; | |
b8fbeb18 | 1416 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1417 | end_stabs (); |
1418 | } | |
c906108c | 1419 | \f |
c5aa993b | 1420 | |
c906108c SS |
1421 | /* This handles a single symbol from the symbol-file, building symbols |
1422 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1423 | ||
1424 | TYPE is the type field of the ".stab" symbol entry. | |
1425 | DESC is the desc field of the ".stab" entry. | |
1426 | VALU is the value field of the ".stab" entry. | |
1427 | NAME is the symbol name, in our address space. | |
1428 | SECTION_OFFSETS is a set of amounts by which the sections of this object | |
c5aa993b JM |
1429 | file were relocated when it was loaded into memory. |
1430 | All symbols that refer | |
1431 | to memory locations need to be offset by these amounts. | |
c906108c | 1432 | OBJFILE is the object file from which we are reading symbols. |
c5aa993b | 1433 | It is used in end_symtab. */ |
c906108c SS |
1434 | |
1435 | static void | |
1436 | os9k_process_one_symbol (type, desc, valu, name, section_offsets, objfile) | |
1437 | int type, desc; | |
1438 | CORE_ADDR valu; | |
1439 | char *name; | |
1440 | struct section_offsets *section_offsets; | |
1441 | struct objfile *objfile; | |
1442 | { | |
1443 | register struct context_stack *new; | |
1444 | /* The stab type used for the definition of the last function. | |
1445 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1446 | static int function_stab_type = 0; | |
1447 | ||
1448 | #if 0 | |
1449 | /* Something is wrong if we see real data before | |
1450 | seeing a source file name. */ | |
c5aa993b | 1451 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
1452 | { |
1453 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
1454 | Currently no one puts symbols there, but we should deal |
1455 | gracefully with the case. A complain()t might be in order, | |
1456 | but this should not be an error (). */ | |
c906108c SS |
1457 | return; |
1458 | } | |
1459 | #endif /* 0 */ | |
1460 | ||
1461 | switch (type) | |
1462 | { | |
1463 | case N_SYM_LBRAC: | |
1464 | /* On most machines, the block addresses are relative to the | |
c5aa993b | 1465 | N_SO, the linker did not relocate them (sigh). */ |
b8fbeb18 | 1466 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1467 | new = push_context (desc, valu); |
1468 | break; | |
1469 | ||
1470 | case N_SYM_RBRAC: | |
b8fbeb18 | 1471 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b | 1472 | new = pop_context (); |
c906108c SS |
1473 | |
1474 | #if !defined (OS9K_VARIABLES_INSIDE_BLOCK) | |
1475 | #define OS9K_VARIABLES_INSIDE_BLOCK(desc, gcc_p) 1 | |
1476 | #endif | |
1477 | ||
c5aa993b | 1478 | if (!OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1479 | local_symbols = new->locals; |
1480 | ||
1481 | if (context_stack_depth > 1) | |
1482 | { | |
1483 | /* This is not the outermost LBRAC...RBRAC pair in the function, | |
1484 | its local symbols preceded it, and are the ones just recovered | |
1485 | from the context stack. Define the block for them (but don't | |
1486 | bother if the block contains no symbols. Should we complain | |
1487 | on blocks without symbols? I can't think of any useful purpose | |
1488 | for them). */ | |
1489 | if (local_symbols != NULL) | |
1490 | { | |
1491 | /* Muzzle a compiler bug that makes end < start. (which | |
c5aa993b | 1492 | compilers? Is this ever harmful?). */ |
c906108c SS |
1493 | if (new->start_addr > valu) |
1494 | { | |
1495 | complain (&lbrac_rbrac_complaint); | |
1496 | new->start_addr = valu; | |
1497 | } | |
1498 | /* Make a block for the local symbols within. */ | |
1499 | finish_block (0, &local_symbols, new->old_blocks, | |
1500 | new->start_addr, valu, objfile); | |
1501 | } | |
1502 | } | |
1503 | else | |
1504 | { | |
1505 | if (context_stack_depth == 0) | |
1506 | { | |
1507 | within_function = 0; | |
1508 | /* Make a block for the local symbols within. */ | |
1509 | finish_block (new->name, &local_symbols, new->old_blocks, | |
c5aa993b | 1510 | new->start_addr, valu, objfile); |
c906108c SS |
1511 | } |
1512 | else | |
1513 | { | |
1514 | /* attach local_symbols to the end of new->locals */ | |
c5aa993b JM |
1515 | if (!new->locals) |
1516 | new->locals = local_symbols; | |
1517 | else | |
1518 | { | |
1519 | struct pending *p; | |
c906108c | 1520 | |
c5aa993b JM |
1521 | p = new->locals; |
1522 | while (p->next) | |
1523 | p = p->next; | |
1524 | p->next = local_symbols; | |
1525 | } | |
c906108c SS |
1526 | } |
1527 | } | |
1528 | ||
c5aa993b | 1529 | if (OS9K_VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
1530 | /* Now pop locals of block just finished. */ |
1531 | local_symbols = new->locals; | |
1532 | break; | |
1533 | ||
1534 | ||
1535 | case N_SYM_SLINE: | |
1536 | /* This type of "symbol" really just records | |
c5aa993b JM |
1537 | one line-number -- core-address correspondence. |
1538 | Enter it in the line list for this symbol table. */ | |
c906108c | 1539 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
b8fbeb18 | 1540 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 1541 | /* FIXME: loses if sizeof (char *) > sizeof (int) */ |
c5aa993b | 1542 | record_line (current_subfile, (int) name, valu); |
c906108c SS |
1543 | break; |
1544 | ||
c5aa993b JM |
1545 | /* The following symbol types need to have the appropriate offset added |
1546 | to their value; then we process symbol definitions in the name. */ | |
c906108c SS |
1547 | case N_SYM_SYM: |
1548 | ||
1549 | if (name) | |
1550 | { | |
1551 | char deftype; | |
1552 | char *dirn, *n; | |
1553 | char *p = strchr (name, ':'); | |
1554 | if (p == NULL) | |
1555 | deftype = '\0'; | |
1556 | else | |
1557 | deftype = p[1]; | |
1558 | ||
1559 | ||
1560 | switch (deftype) | |
1561 | { | |
1562 | case 'S': | |
b8fbeb18 | 1563 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1564 | n = strrchr (name, '/'); |
1565 | if (n != NULL) | |
1566 | { | |
1567 | *n = '\0'; | |
1568 | n++; | |
1569 | dirn = name; | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | n = name; | |
1574 | dirn = NULL; | |
1575 | } | |
c906108c | 1576 | *p = '\0'; |
c5aa993b JM |
1577 | if (symfile_depth++ == 0) |
1578 | { | |
1579 | if (last_source_file) | |
1580 | { | |
b8fbeb18 | 1581 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
1582 | end_stabs (); |
1583 | } | |
1584 | start_stabs (); | |
1585 | os9k_stabs = 1; | |
1586 | start_symtab (n, dirn, valu); | |
1587 | record_debugformat ("OS9"); | |
1588 | } | |
1589 | else | |
1590 | { | |
1591 | push_subfile (); | |
1592 | start_subfile (n, dirn != NULL ? dirn : current_subfile->dirname); | |
c906108c | 1593 | } |
c906108c SS |
1594 | break; |
1595 | ||
1596 | case 'f': | |
1597 | case 'F': | |
b8fbeb18 | 1598 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1599 | function_stab_type = type; |
1600 | ||
1601 | within_function = 1; | |
1602 | new = push_context (0, valu); | |
1603 | new->name = define_symbol (valu, name, desc, type, objfile); | |
1604 | break; | |
1605 | ||
1606 | case 'V': | |
1607 | case 'v': | |
b8fbeb18 | 1608 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
1609 | define_symbol (valu, name, desc, type, objfile); |
1610 | break; | |
1611 | ||
1612 | default: | |
1613 | define_symbol (valu, name, desc, type, objfile); | |
1614 | break; | |
1615 | } | |
1616 | } | |
1617 | break; | |
1618 | ||
1619 | case N_SYM_SE: | |
c5aa993b JM |
1620 | if (--symfile_depth != 0) |
1621 | start_subfile (pop_subfile (), current_subfile->dirname); | |
c906108c SS |
1622 | break; |
1623 | ||
1624 | default: | |
1625 | complain (&unknown_symtype_complaint, | |
c5aa993b | 1626 | local_hex_string ((unsigned long) type)); |
c906108c SS |
1627 | /* FALLTHROUGH */ |
1628 | break; | |
1629 | ||
1630 | case N_SYM_CMPLR: | |
1631 | break; | |
1632 | } | |
1633 | previous_stab_code = type; | |
1634 | } | |
1635 | ||
1636 | static struct sym_fns os9k_sym_fns = | |
1637 | { | |
1638 | bfd_target_os9k_flavour, | |
c5aa993b JM |
1639 | os9k_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
1640 | os9k_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
1641 | os9k_symfile_read, /* sym_read: read a symbol file into symtab */ | |
1642 | os9k_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 1643 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
c5aa993b | 1644 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
1645 | }; |
1646 | ||
1647 | void | |
1648 | _initialize_os9kread () | |
1649 | { | |
c5aa993b | 1650 | add_symtab_fns (&os9k_sym_fns); |
c906108c | 1651 | } |