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c906108c SS |
1 | /* Read hp debug symbols and convert to internal format, for GDB. |
2 | Copyright 1993, 1996, 1998, 1999 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | Written by the Center for Software Science at the University of Utah | |
21 | and by Cygnus Support. */ | |
22 | ||
23 | /* Common include file for hp_symtab_read.c and hp_psymtab_read.c. | |
24 | This has nested includes of a bunch of stuff. */ | |
25 | #include "hpread.h" | |
26 | #include "demangle.h" | |
27 | ||
28 | /* To generate dumping code, uncomment this define. The dumping | |
29 | itself is controlled by routine-local statics called "dumping". */ | |
30 | /* #define DUMPING 1 */ | |
31 | ||
32 | /* To use the quick look-up tables, uncomment this define. */ | |
33 | #define QUICK_LOOK_UP 1 | |
34 | ||
35 | /* To call PXDB to process un-processed files, uncomment this define. */ | |
36 | #define USE_PXDB 1 | |
37 | ||
38 | /* Forward procedure declarations */ | |
39 | ||
40 | void hpread_symfile_init | |
41 | PARAMS ((struct objfile *)); | |
42 | ||
43 | void | |
44 | do_pxdb PARAMS ((bfd *)); | |
45 | ||
46 | void hpread_build_psymtabs | |
47 | PARAMS ((struct objfile *, struct section_offsets *, int)); | |
48 | ||
49 | void hpread_symfile_finish | |
50 | PARAMS ((struct objfile *)); | |
51 | ||
52 | static union dnttentry *hpread_get_gntt | |
53 | PARAMS ((int, struct objfile *)); | |
54 | ||
55 | static unsigned long hpread_get_textlow | |
56 | PARAMS ((int, int, struct objfile *, int)); | |
57 | ||
58 | static struct partial_symtab *hpread_start_psymtab | |
59 | PARAMS ((struct objfile *, struct section_offsets *, char *, CORE_ADDR, int, | |
60 | struct partial_symbol **, struct partial_symbol **)); | |
61 | ||
62 | static struct partial_symtab *hpread_end_psymtab | |
63 | PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, | |
64 | struct partial_symtab **, int)); | |
65 | ||
66 | /* End of forward routine declarations */ | |
67 | ||
68 | #ifdef USE_PXDB | |
69 | ||
70 | /* NOTE use of system files! May not be portable. */ | |
71 | ||
72 | #define PXDB_SVR4 "/opt/langtools/bin/pxdb" | |
73 | #define PXDB_BSD "/usr/bin/pxdb" | |
74 | ||
75 | #include <stdlib.h> | |
76 | #include <string.h> | |
77 | #include <unistd.h> | |
78 | ||
79 | /* check for the existance of a file, given its full pathname */ | |
80 | int | |
81 | file_exists (filename) | |
82 | char *filename; | |
83 | { | |
84 | if (filename) | |
85 | return (access (filename, F_OK) == 0); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | ||
90 | /* Translate from the "hp_language" enumeration in hp-symtab.h | |
91 | used in the debug info to gdb's generic enumeration in defs.h. */ | |
92 | static enum language | |
93 | trans_lang (in_lang) | |
94 | enum hp_language in_lang; | |
95 | { | |
96 | if (in_lang == HP_LANGUAGE_C) | |
97 | return language_c; | |
98 | ||
99 | else if (in_lang == HP_LANGUAGE_CPLUSPLUS) | |
100 | return language_cplus; | |
101 | ||
102 | else if (in_lang == HP_LANGUAGE_F77) | |
103 | return language_fortran; | |
104 | ||
105 | else | |
106 | return language_unknown; | |
107 | } | |
108 | ||
109 | static char main_string[] = "main"; | |
110 | \f | |
111 | /* Call PXDB to process our file. | |
112 | ||
113 | Approach copied from DDE's "dbgk_run_pxdb". Note: we | |
114 | don't check for BSD location of pxdb, nor for existance | |
115 | of pxdb itself, etc. | |
116 | ||
117 | NOTE: uses system function and string functions directly. | |
118 | ||
119 | Return value: 1 if ok, 0 if not */ | |
120 | int | |
121 | hpread_call_pxdb (file_name) | |
122 | char *file_name; | |
123 | { | |
124 | char *p; | |
125 | int status; | |
126 | int retval; | |
127 | ||
128 | if (file_exists (PXDB_SVR4)) | |
129 | { | |
130 | p = malloc (strlen (PXDB_SVR4) + strlen (file_name) + 2); | |
131 | strcpy (p, PXDB_SVR4); | |
132 | strcat (p, " "); | |
133 | strcat (p, file_name); | |
134 | ||
135 | warning ("File not processed by pxdb--about to process now.\n"); | |
136 | status = system (p); | |
137 | ||
138 | retval = (status == 0); | |
139 | } | |
140 | else | |
141 | { | |
142 | warning ("pxdb not found at standard location: /opt/langtools/bin\ngdb will not be able to debug %s.\nPlease install pxdb at the above location and then restart gdb.\nYou can also run pxdb on %s with the command\n\"pxdb %s\" and then restart gdb.", file_name, file_name, file_name); | |
143 | ||
144 | retval = 0; | |
145 | } | |
146 | return retval; | |
147 | } /* hpread_call_pxdb */ | |
148 | \f | |
149 | ||
150 | /* Return 1 if the file turns out to need pre-processing | |
151 | by PXDB, and we have thus called PXDB to do this processing | |
152 | and the file therefore needs to be re-loaded. Otherwise | |
153 | return 0. */ | |
154 | int | |
155 | hpread_pxdb_needed (sym_bfd) | |
156 | bfd *sym_bfd; | |
157 | { | |
158 | asection *pinfo_section, *debug_section, *header_section; | |
159 | unsigned int do_pxdb; | |
160 | char *buf; | |
161 | bfd_size_type header_section_size; | |
162 | ||
163 | unsigned long tmp; | |
164 | unsigned int pxdbed; | |
165 | ||
166 | header_section = bfd_get_section_by_name (sym_bfd, "$HEADER$"); | |
167 | if (!header_section) | |
168 | { | |
169 | return 0; /* No header at all, can't recover... */ | |
170 | } | |
171 | ||
172 | debug_section = bfd_get_section_by_name (sym_bfd, "$DEBUG$"); | |
173 | pinfo_section = bfd_get_section_by_name (sym_bfd, "$PINFO$"); | |
174 | ||
175 | if (pinfo_section && !debug_section) | |
176 | { | |
177 | /* Debug info with DOC, has different header format. | |
178 | this only happens if the file was pxdbed and compiled optimized | |
179 | otherwise the PINFO section is not there. */ | |
180 | header_section_size = bfd_section_size (objfile->obfd, header_section); | |
181 | ||
182 | if (header_section_size == (bfd_size_type) sizeof (DOC_info_PXDB_header)) | |
183 | { | |
184 | buf = alloca (sizeof (DOC_info_PXDB_header)); | |
185 | ||
186 | if (!bfd_get_section_contents (sym_bfd, | |
187 | header_section, | |
188 | buf, 0, | |
189 | header_section_size)) | |
190 | error ("bfd_get_section_contents\n"); | |
191 | ||
192 | tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 4)); | |
193 | pxdbed = (tmp >> 31) & 0x1; | |
194 | ||
195 | if (!pxdbed) | |
196 | error ("file debug header info invalid\n"); | |
197 | do_pxdb = 0; | |
198 | } | |
199 | ||
200 | else | |
201 | error ("invalid $HEADER$ size in executable \n"); | |
202 | } | |
203 | ||
204 | else | |
205 | { | |
206 | ||
207 | /* this can be three different cases: | |
208 | 1. pxdbed and not doc | |
209 | - DEBUG and HEADER sections are there | |
210 | - header is PXDB_header type | |
211 | - pxdbed flag is set to 1 | |
212 | ||
213 | 2. not pxdbed and doc | |
214 | - DEBUG and HEADER sections are there | |
215 | - header is DOC_info_header type | |
216 | - pxdbed flag is set to 0 | |
217 | ||
218 | 3. not pxdbed and not doc | |
219 | - DEBUG and HEADER sections are there | |
220 | - header is XDB_header type | |
221 | - pxdbed flag is set to 0 | |
222 | ||
223 | NOTE: the pxdbed flag is meaningful also in the not | |
224 | already pxdb processed version of the header, | |
225 | because in case on non-already processed by pxdb files | |
226 | that same bit in the header would be always zero. | |
227 | Why? Because the bit is the leftmost bit of a word | |
228 | which contains a 'length' which is always a positive value | |
229 | so that bit is never set to 1 (otherwise it would be negative) | |
230 | ||
231 | Given the above, we have two choices : either we ignore the | |
232 | size of the header itself and just look at the pxdbed field, | |
233 | or we check the size and then we (for safety and paranoia related | |
234 | issues) check the bit. | |
235 | The first solution is used by DDE, the second by PXDB itself. | |
236 | I am using the second one here, because I already wrote it, | |
237 | and it is the end of a long day. | |
238 | Also, using the first approach would still involve size issues | |
239 | because we need to read in the contents of the header section, and | |
240 | give the correct amount of stuff we want to read to the | |
241 | get_bfd_section_contents function. */ | |
242 | ||
243 | /* decide which case depending on the size of the header section. | |
244 | The size is as defined in hp-symtab.h */ | |
245 | ||
246 | header_section_size = bfd_section_size (objfile->obfd, header_section); | |
247 | ||
248 | if (header_section_size == (bfd_size_type) sizeof (PXDB_header)) /* pxdb and not doc */ | |
249 | { | |
250 | ||
251 | buf = alloca (sizeof (PXDB_header)); | |
252 | if (!bfd_get_section_contents (sym_bfd, | |
253 | header_section, | |
254 | buf, 0, | |
255 | header_section_size)) | |
256 | error ("bfd_get_section_contents\n"); | |
257 | ||
258 | tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 3)); | |
259 | pxdbed = (tmp >> 31) & 0x1; | |
260 | ||
261 | if (pxdbed) | |
262 | do_pxdb = 0; | |
263 | else | |
264 | error ("file debug header invalid\n"); | |
265 | } | |
266 | else /*not pxdbed and doc OR not pxdbed and non doc */ | |
267 | do_pxdb = 1; | |
268 | } | |
269 | ||
270 | if (do_pxdb) | |
271 | { | |
272 | return 1; | |
273 | } | |
274 | else | |
275 | { | |
276 | return 0; | |
277 | } | |
278 | } /* hpread_pxdb_needed */ | |
279 | ||
280 | #endif | |
281 | ||
282 | /* Check whether the file needs to be preprocessed by pxdb. | |
283 | If so, call pxdb. */ | |
284 | ||
285 | void | |
286 | do_pxdb (sym_bfd) | |
287 | bfd *sym_bfd; | |
288 | { | |
289 | /* The following code is HP-specific. The "right" way of | |
290 | doing this is unknown, but we bet would involve a target- | |
291 | specific pre-file-load check using a generic mechanism. */ | |
292 | ||
293 | /* This code will not be executed if the file is not in SOM | |
294 | format (i.e. if compiled with gcc) */ | |
295 | if (hpread_pxdb_needed (sym_bfd)) | |
296 | { | |
297 | /*This file has not been pre-processed. Preprocess now */ | |
298 | ||
299 | if (hpread_call_pxdb (sym_bfd->filename)) | |
300 | { | |
301 | /* The call above has changed the on-disk file, | |
302 | we can close the file anyway, because the | |
303 | symbols will be reread in when the target is run */ | |
304 | bfd_close (sym_bfd); | |
305 | } | |
306 | } | |
307 | } | |
308 | ||
309 | \f | |
310 | ||
311 | #ifdef QUICK_LOOK_UP | |
312 | ||
313 | /* Code to handle quick lookup-tables follows. */ | |
314 | ||
315 | ||
316 | /* Some useful macros */ | |
317 | #define VALID_FILE(i) ((i) < pxdb_header_p->fd_entries) | |
318 | #define VALID_MODULE(i) ((i) < pxdb_header_p->md_entries) | |
319 | #define VALID_PROC(i) ((i) < pxdb_header_p->pd_entries) | |
320 | #define VALID_CLASS(i) ((i) < pxdb_header_p->cd_entries) | |
321 | ||
322 | #define FILE_START(i) (qFD[i].adrStart) | |
323 | #define MODULE_START(i) (qMD[i].adrStart) | |
324 | #define PROC_START(i) (qPD[i].adrStart) | |
325 | ||
326 | #define FILE_END(i) (qFD[i].adrEnd) | |
327 | #define MODULE_END(i) (qMD[i].adrEnd) | |
328 | #define PROC_END(i) (qPD[i].adrEnd) | |
329 | ||
330 | #define FILE_ISYM(i) (qFD[i].isym) | |
331 | #define MODULE_ISYM(i) (qMD[i].isym) | |
332 | #define PROC_ISYM(i) (qPD[i].isym) | |
333 | ||
334 | #define VALID_CURR_FILE (curr_fd < pxdb_header_p->fd_entries) | |
335 | #define VALID_CURR_MODULE (curr_md < pxdb_header_p->md_entries) | |
336 | #define VALID_CURR_PROC (curr_pd < pxdb_header_p->pd_entries) | |
337 | #define VALID_CURR_CLASS (curr_cd < pxdb_header_p->cd_entries) | |
338 | ||
339 | #define CURR_FILE_START (qFD[curr_fd].adrStart) | |
340 | #define CURR_MODULE_START (qMD[curr_md].adrStart) | |
341 | #define CURR_PROC_START (qPD[curr_pd].adrStart) | |
342 | ||
343 | #define CURR_FILE_END (qFD[curr_fd].adrEnd) | |
344 | #define CURR_MODULE_END (qMD[curr_md].adrEnd) | |
345 | #define CURR_PROC_END (qPD[curr_pd].adrEnd) | |
346 | ||
347 | #define CURR_FILE_ISYM (qFD[curr_fd].isym) | |
348 | #define CURR_MODULE_ISYM (qMD[curr_md].isym) | |
349 | #define CURR_PROC_ISYM (qPD[curr_pd].isym) | |
350 | ||
351 | #define TELL_OBJFILE \ | |
352 | do { \ | |
353 | if( !told_objfile ) { \ | |
354 | told_objfile = 1; \ | |
355 | warning ("\nIn object file \"%s\":\n", \ | |
356 | objfile->name); \ | |
357 | } \ | |
358 | } while (0) | |
359 | \f | |
360 | ||
361 | ||
362 | /* Keeping track of the start/end symbol table (LNTT) indices of | |
363 | psymtabs created so far */ | |
364 | ||
365 | typedef struct | |
366 | { | |
367 | int start; | |
368 | int end; | |
369 | } | |
370 | pst_syms_struct; | |
371 | ||
372 | static pst_syms_struct *pst_syms_array = 0; | |
373 | ||
374 | static pst_syms_count = 0; | |
375 | static pst_syms_size = 0; | |
376 | ||
377 | /* used by the TELL_OBJFILE macro */ | |
378 | static boolean told_objfile = 0; | |
379 | ||
380 | /* Set up psymtab symbol index stuff */ | |
381 | static void | |
382 | init_pst_syms () | |
383 | { | |
384 | pst_syms_count = 0; | |
385 | pst_syms_size = 20; | |
386 | pst_syms_array = (pst_syms_struct *) xmalloc (20 * sizeof (pst_syms_struct)); | |
387 | } | |
388 | ||
389 | /* Clean up psymtab symbol index stuff */ | |
390 | static void | |
391 | clear_pst_syms () | |
392 | { | |
393 | pst_syms_count = 0; | |
394 | pst_syms_size = 0; | |
395 | free (pst_syms_array); | |
396 | pst_syms_array = 0; | |
397 | } | |
398 | ||
399 | /* Add information about latest psymtab to symbol index table */ | |
400 | static void | |
401 | record_pst_syms (start_sym, end_sym) | |
402 | int start_sym; | |
403 | int end_sym; | |
404 | { | |
405 | if (++pst_syms_count > pst_syms_size) | |
406 | { | |
407 | pst_syms_array = (pst_syms_struct *) xrealloc (pst_syms_array, | |
408 | 2 * pst_syms_size * sizeof (pst_syms_struct)); | |
409 | pst_syms_size *= 2; | |
410 | } | |
411 | pst_syms_array[pst_syms_count - 1].start = start_sym; | |
412 | pst_syms_array[pst_syms_count - 1].end = end_sym; | |
413 | } | |
414 | ||
415 | /* Find a suitable symbol table index which can serve as the upper | |
416 | bound of a psymtab that starts at INDEX | |
417 | ||
418 | This scans backwards in the psymtab symbol index table to find a | |
419 | "hole" in which the given index can fit. This is a heuristic!! | |
420 | We don't search the entire table to check for multiple holes, | |
421 | we don't care about overlaps, etc. | |
422 | ||
423 | Return 0 => not found */ | |
424 | static int | |
425 | find_next_pst_start (index) | |
426 | int index; | |
427 | { | |
428 | int i; | |
429 | ||
430 | for (i = pst_syms_count - 1; i >= 0; i--) | |
431 | if (pst_syms_array[i].end <= index) | |
432 | return (i == pst_syms_count - 1) ? 0 : pst_syms_array[i + 1].start - 1; | |
433 | ||
434 | if (pst_syms_array[0].start > index) | |
435 | return pst_syms_array[0].start - 1; | |
436 | ||
437 | return 0; | |
438 | } | |
439 | \f | |
440 | ||
441 | ||
442 | /* Utility functions to find the ending symbol index for a psymtab */ | |
443 | ||
444 | /* Find the next file entry that begins beyond INDEX, and return | |
445 | its starting symbol index - 1. | |
446 | QFD is the file table, CURR_FD is the file entry from where to start, | |
447 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
448 | ||
449 | Return 0 => not found */ | |
450 | static int | |
451 | find_next_file_isym (index, qFD, curr_fd, pxdb_header_p) | |
452 | int index; | |
453 | quick_file_entry *qFD; | |
454 | int curr_fd; | |
455 | PXDB_header_ptr pxdb_header_p; | |
456 | { | |
457 | while (VALID_CURR_FILE) | |
458 | { | |
459 | if (CURR_FILE_ISYM >= index) | |
460 | return CURR_FILE_ISYM - 1; | |
461 | curr_fd++; | |
462 | } | |
463 | return 0; | |
464 | } | |
465 | ||
466 | /* Find the next procedure entry that begins beyond INDEX, and return | |
467 | its starting symbol index - 1. | |
468 | QPD is the procedure table, CURR_PD is the proc entry from where to start, | |
469 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
470 | ||
471 | Return 0 => not found */ | |
472 | static int | |
473 | find_next_proc_isym (index, qPD, curr_pd, pxdb_header_p) | |
474 | int index; | |
475 | quick_procedure_entry *qPD; | |
476 | int curr_pd; | |
477 | PXDB_header_ptr pxdb_header_p; | |
478 | { | |
479 | while (VALID_CURR_PROC) | |
480 | { | |
481 | if (CURR_PROC_ISYM >= index) | |
482 | return CURR_PROC_ISYM - 1; | |
483 | curr_pd++; | |
484 | } | |
485 | return 0; | |
486 | } | |
487 | ||
488 | /* Find the next module entry that begins beyond INDEX, and return | |
489 | its starting symbol index - 1. | |
490 | QMD is the module table, CURR_MD is the modue entry from where to start, | |
491 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
492 | ||
493 | Return 0 => not found */ | |
494 | static int | |
495 | find_next_module_isym (index, qMD, curr_md, pxdb_header_p) | |
496 | int index; | |
497 | quick_module_entry *qMD; | |
498 | int curr_md; | |
499 | PXDB_header_ptr pxdb_header_p; | |
500 | { | |
501 | while (VALID_CURR_MODULE) | |
502 | { | |
503 | if (CURR_MODULE_ISYM >= index) | |
504 | return CURR_MODULE_ISYM - 1; | |
505 | curr_md++; | |
506 | } | |
507 | return 0; | |
508 | } | |
509 | ||
510 | /* Scan and record partial symbols for all functions starting from index | |
511 | pointed to by CURR_PD_P, and between code addresses START_ADR and END_ADR. | |
512 | Other parameters are explained in comments below. */ | |
513 | ||
514 | /* This used to be inline in hpread_quick_traverse, but now that we do essentially the | |
515 | same thing for two different cases (modules and module-less files), it's better | |
516 | organized in a separate routine, although it does take lots of arguments. pai/1997-10-08 */ | |
517 | ||
518 | static int | |
519 | scan_procs (curr_pd_p, qPD, max_procs, start_adr, end_adr, pst, vt_bits, objfile, section_offsets) | |
520 | int *curr_pd_p; /* pointer to current proc index */ | |
521 | quick_procedure_entry *qPD; /* the procedure quick lookup table */ | |
522 | int max_procs; /* number of entries in proc. table */ | |
523 | CORE_ADDR start_adr; /* beginning of code range for current psymtab */ | |
524 | CORE_ADDR end_adr; /* end of code range for current psymtab */ | |
525 | struct partial_symtab *pst; /* current psymtab */ | |
526 | char *vt_bits; /* strings table of SOM debug space */ | |
527 | struct objfile *objfile; /* current object file */ | |
528 | struct section_offsets *section_offsets; /* not really used for HP-UX currently */ | |
529 | { | |
530 | union dnttentry *dn_bufp; | |
531 | int symbol_count = 0; /* Total number of symbols in this psymtab */ | |
532 | int curr_pd = *curr_pd_p; /* Convenience variable -- avoid dereferencing pointer all the time */ | |
533 | ||
534 | #ifdef DUMPING | |
535 | /* Turn this on for lots of debugging information in this routine */ | |
536 | static int dumping = 0; | |
537 | #endif | |
538 | ||
539 | #ifdef DUMPING | |
540 | if (dumping) | |
541 | { | |
542 | printf ("Scan_procs called, addresses %x to %x, proc %x\n", start_adr, end_adr, curr_pd); | |
543 | } | |
544 | #endif | |
545 | ||
546 | while ((CURR_PROC_START <= end_adr) && (curr_pd < max_procs)) | |
547 | { | |
548 | ||
549 | char *rtn_name; /* mangled name */ | |
550 | char *rtn_dem_name; /* qualified demangled name */ | |
551 | char *class_name; | |
552 | int class; | |
553 | ||
554 | if ((trans_lang ((enum hp_language) qPD[curr_pd].language) == language_cplus) && | |
555 | vt_bits[(long) qPD[curr_pd].sbAlias]) /* not a null string */ | |
556 | { | |
557 | /* Get mangled name for the procedure, and demangle it */ | |
558 | rtn_name = &vt_bits[(long) qPD[curr_pd].sbAlias]; | |
559 | rtn_dem_name = cplus_demangle (rtn_name, DMGL_ANSI | DMGL_PARAMS); | |
560 | } | |
561 | else | |
562 | { | |
563 | rtn_name = &vt_bits[(long) qPD[curr_pd].sbProc]; | |
564 | rtn_dem_name = NULL; | |
565 | } | |
566 | ||
567 | /* Hack to get around HP C/C++ compilers' insistence on providing | |
568 | "_MAIN_" as an alternate name for "main" */ | |
569 | if ((strcmp (rtn_name, "_MAIN_") == 0) && | |
570 | (strcmp (&vt_bits[(long) qPD[curr_pd].sbProc], "main") == 0)) | |
571 | rtn_dem_name = rtn_name = main_string; | |
572 | ||
573 | #ifdef DUMPING | |
574 | if (dumping) | |
575 | { | |
576 | printf ("..add %s (demangled %s), index %x to this psymtab\n", rtn_name, rtn_dem_name, curr_pd); | |
577 | } | |
578 | #endif | |
579 | ||
580 | /* Check for module-spanning routines. */ | |
581 | if (CURR_PROC_END > end_adr) | |
582 | { | |
583 | TELL_OBJFILE; | |
584 | warning ("Procedure \"%s\" [0x%x] spans file or module boundaries.", rtn_name, curr_pd); | |
585 | } | |
586 | ||
587 | /* Add this routine symbol to the list in the objfile. | |
588 | Unfortunately we have to go to the LNTT to determine the | |
589 | correct list to put it on. An alternative (which the | |
590 | code used to do) would be to not check and always throw | |
591 | it on the "static" list. But if we go that route, then | |
592 | symbol_lookup() needs to be tweaked a bit to account | |
593 | for the fact that the function might not be found on | |
594 | the correct list in the psymtab. - RT */ | |
595 | dn_bufp = hpread_get_lntt (qPD[curr_pd].isym, objfile); | |
596 | if (dn_bufp->dfunc.global) | |
597 | add_psymbol_with_dem_name_to_list (rtn_name, | |
598 | strlen (rtn_name), | |
599 | rtn_dem_name, | |
600 | strlen (rtn_dem_name), | |
601 | VAR_NAMESPACE, | |
602 | LOC_BLOCK, /* "I am a routine" */ | |
603 | &objfile->global_psymbols, | |
604 | (qPD[curr_pd].adrStart + /* Starting address of rtn */ | |
605 | ANOFFSET (section_offsets, SECT_OFF_TEXT)), | |
606 | 0, /* core addr?? */ | |
607 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
608 | objfile); | |
609 | else | |
610 | add_psymbol_with_dem_name_to_list (rtn_name, | |
611 | strlen (rtn_name), | |
612 | rtn_dem_name, | |
613 | strlen (rtn_dem_name), | |
614 | VAR_NAMESPACE, | |
615 | LOC_BLOCK, /* "I am a routine" */ | |
616 | &objfile->static_psymbols, | |
617 | (qPD[curr_pd].adrStart + /* Starting address of rtn */ | |
618 | ANOFFSET (section_offsets, SECT_OFF_TEXT)), | |
619 | 0, /* core addr?? */ | |
620 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
621 | objfile); | |
622 | ||
623 | symbol_count++; | |
624 | *curr_pd_p = ++curr_pd; /* bump up count & reflect in caller */ | |
625 | } /* loop over procedures */ | |
626 | ||
627 | #ifdef DUMPING | |
628 | if (dumping) | |
629 | { | |
630 | if (symbol_count == 0) | |
631 | printf ("Scan_procs: no symbols found!\n"); | |
632 | } | |
633 | #endif | |
634 | ||
635 | return symbol_count; | |
636 | } | |
637 | ||
638 | ||
639 | /* Traverse the quick look-up tables, building a set of psymtabs. | |
640 | ||
641 | This constructs a psymtab for modules and files in the quick lookup | |
642 | tables. | |
643 | ||
644 | Mostly, modules correspond to compilation units, so we try to | |
645 | create psymtabs that correspond to modules; however, in some cases | |
646 | a file can result in a compiled object which does not have a module | |
647 | entry for it, so in such cases we create a psymtab for the file. */ | |
648 | ||
649 | int | |
650 | hpread_quick_traverse (objfile, section_offsets, gntt_bits, vt_bits, pxdb_header_p) | |
651 | struct objfile *objfile; /* The object file descriptor */ | |
652 | struct section_offsets *section_offsets; /* ?? Null for HP */ | |
653 | char *gntt_bits; /* GNTT entries, loaded in from the file */ | |
654 | char *vt_bits; /* VT (string) entries ditto. */ | |
655 | PXDB_header_ptr pxdb_header_p; /* Pointer to pxdb header ditto */ | |
656 | { | |
657 | struct partial_symtab *pst; | |
658 | ||
659 | char *addr; | |
660 | ||
661 | quick_procedure_entry *qPD; | |
662 | quick_file_entry *qFD; | |
663 | quick_module_entry *qMD; | |
664 | quick_class_entry *qCD; | |
665 | ||
666 | int idx; | |
667 | int i; | |
668 | CORE_ADDR start_adr; /* current psymtab's starting code addr */ | |
669 | CORE_ADDR end_adr; /* current psymtab's ending code addr */ | |
670 | CORE_ADDR next_mod_adr; /* next module's starting code addr */ | |
671 | int curr_pd; /* current procedure */ | |
672 | int curr_fd; /* current file */ | |
673 | int curr_md; /* current module */ | |
674 | int start_sym; /* current psymtab's starting symbol index */ | |
675 | int end_sym; /* current psymtab's ending symbol index */ | |
676 | int max_LNTT_sym_index; | |
677 | int syms_in_pst; | |
678 | B_TYPE *class_entered; | |
679 | ||
680 | struct partial_symbol **global_syms; /* We'll be filling in the "global" */ | |
681 | struct partial_symbol **static_syms; /* and "static" tables in the objfile | |
682 | as we go, so we need a pair of | |
683 | current pointers. */ | |
684 | ||
685 | #ifdef DUMPING | |
686 | /* Turn this on for lots of debugging information in this routine. | |
687 | You get a blow-by-blow account of quick lookup table reading */ | |
688 | static int dumping = 0; | |
689 | #endif | |
690 | ||
691 | pst = (struct partial_symtab *) 0; | |
692 | ||
693 | /* Clear out some globals */ | |
694 | init_pst_syms (); | |
695 | told_objfile = 0; | |
696 | ||
697 | /* Demangling style -- if EDG style already set, don't change it, | |
698 | as HP style causes some problems with the KAI EDG compiler */ | |
699 | if (current_demangling_style != edg_demangling) | |
700 | { | |
701 | /* Otherwise, ensure that we are using HP style demangling */ | |
702 | set_demangling_style (HP_DEMANGLING_STYLE_STRING); | |
703 | } | |
704 | ||
705 | /* First we need to find the starting points of the quick | |
706 | look-up tables in the GNTT. */ | |
707 | ||
708 | addr = gntt_bits; | |
709 | ||
710 | qPD = (quick_procedure_entry_ptr) addr; | |
711 | addr += pxdb_header_p->pd_entries * sizeof (quick_procedure_entry); | |
712 | ||
713 | #ifdef DUMPING | |
714 | if (dumping) | |
715 | { | |
716 | printf ("\n Printing routines as we see them\n"); | |
717 | for (i = 0; VALID_PROC (i); i++) | |
718 | { | |
719 | idx = (long) qPD[i].sbProc; | |
720 | printf ("%s %x..%x\n", &vt_bits[idx], | |
721 | (int) PROC_START (i), | |
722 | (int) PROC_END (i)); | |
723 | } | |
724 | } | |
725 | #endif | |
726 | ||
727 | qFD = (quick_file_entry_ptr) addr; | |
728 | addr += pxdb_header_p->fd_entries * sizeof (quick_file_entry); | |
729 | ||
730 | #ifdef DUMPING | |
731 | if (dumping) | |
732 | { | |
733 | printf ("\n Printing files as we see them\n"); | |
734 | for (i = 0; VALID_FILE (i); i++) | |
735 | { | |
736 | idx = (long) qFD[i].sbFile; | |
737 | printf ("%s %x..%x\n", &vt_bits[idx], | |
738 | (int) FILE_START (i), | |
739 | (int) FILE_END (i)); | |
740 | } | |
741 | } | |
742 | #endif | |
743 | ||
744 | qMD = (quick_module_entry_ptr) addr; | |
745 | addr += pxdb_header_p->md_entries * sizeof (quick_module_entry); | |
746 | ||
747 | #ifdef DUMPING | |
748 | if (dumping) | |
749 | { | |
750 | printf ("\n Printing modules as we see them\n"); | |
751 | for (i = 0; i < pxdb_header_p->md_entries; i++) | |
752 | { | |
753 | idx = (long) qMD[i].sbMod; | |
754 | printf ("%s\n", &vt_bits[idx]); | |
755 | } | |
756 | } | |
757 | #endif | |
758 | ||
759 | qCD = (quick_class_entry_ptr) addr; | |
760 | addr += pxdb_header_p->cd_entries * sizeof (quick_class_entry); | |
761 | ||
762 | #ifdef DUMPING | |
763 | if (dumping) | |
764 | { | |
765 | printf ("\n Printing classes as we see them\n"); | |
766 | for (i = 0; VALID_CLASS (i); i++) | |
767 | { | |
768 | idx = (long) qCD[i].sbClass; | |
769 | printf ("%s\n", &vt_bits[idx]); | |
770 | } | |
771 | ||
772 | printf ("\n Done with dump, on to build!\n"); | |
773 | } | |
774 | #endif | |
775 | ||
776 | /* We need this index only while hp-symtab-read.c expects | |
777 | a byte offset to the end of the LNTT entries for a given | |
778 | psymtab. Thus the need for it should go away someday. | |
779 | ||
780 | When it goes away, then we won't have any need to load the | |
781 | LNTT from the objfile at psymtab-time, and start-up will be | |
782 | faster. To make that work, we'll need some way to create | |
783 | a null pst for the "globals" pseudo-module. */ | |
784 | max_LNTT_sym_index = LNTT_SYMCOUNT (objfile); | |
785 | ||
786 | /* Scan the module descriptors and make a psymtab for each. | |
787 | ||
788 | We know the MDs, FDs and the PDs are in order by starting | |
789 | address. We use that fact to traverse all three arrays in | |
790 | parallel, knowing when the next PD is in a new file | |
791 | and we need to create a new psymtab. */ | |
792 | curr_pd = 0; /* Current procedure entry */ | |
793 | curr_fd = 0; /* Current file entry */ | |
794 | curr_md = 0; /* Current module entry */ | |
795 | ||
796 | start_adr = 0; /* Current psymtab code range */ | |
797 | end_adr = 0; | |
798 | ||
799 | start_sym = 0; /* Current psymtab symbol range */ | |
800 | end_sym = 0; | |
801 | ||
802 | syms_in_pst = 0; /* Symbol count for psymtab */ | |
803 | ||
804 | /* Psts actually just have pointers into the objfile's | |
805 | symbol table, not their own symbol tables. */ | |
806 | global_syms = objfile->global_psymbols.list; | |
807 | static_syms = objfile->static_psymbols.list; | |
808 | ||
809 | ||
810 | /* First skip over pseudo-entries with address 0. These represent inlined | |
811 | routines and abstract (uninstantiated) template routines. | |
812 | FIXME: These should be read in and available -- even if we can't set | |
813 | breakpoints, etc., there's some information that can be presented | |
814 | to the user. pai/1997-10-08 */ | |
815 | ||
816 | while (VALID_CURR_PROC && (CURR_PROC_START == 0)) | |
817 | curr_pd++; | |
818 | ||
819 | /* Loop over files, modules, and procedures in code address order. Each | |
820 | time we enter an iteration of this loop, curr_pd points to the first | |
821 | unprocessed procedure, curr_fd points to the first unprocessed file, and | |
822 | curr_md to the first unprocessed module. Each iteration of this loop | |
823 | updates these as required -- any or all of them may be bumpd up | |
824 | each time around. When we exit this loop, we are done with all files | |
825 | and modules in the tables -- there may still be some procedures, however. | |
826 | ||
827 | Note: This code used to loop only over module entries, under the assumption | |
828 | that files can occur via inclusions and are thus unreliable, while a | |
829 | compiled object always corresponds to a module. With CTTI in the HP aCC | |
830 | compiler, it turns out that compiled objects may have only files and no | |
831 | modules; so we have to loop over files and modules, creating psymtabs for | |
832 | either as appropriate. Unfortunately there are some problems (notably: | |
833 | 1. the lack of "SRC_FILE_END" entries in the LNTT, 2. the lack of pointers | |
834 | to the ending symbol indices of a module or a file) which make it quite hard | |
835 | to do this correctly. Currently it uses a bunch of heuristics to start and | |
836 | end psymtabs; they seem to work well with most objects generated by aCC, but | |
837 | who knows when that will change... */ | |
838 | ||
839 | while (VALID_CURR_FILE || VALID_CURR_MODULE) | |
840 | { | |
841 | ||
842 | char *mod_name_string; | |
843 | char *full_name_string; | |
844 | ||
845 | /* First check for modules like "version.c", which have no code | |
846 | in them but still have qMD entries. They also have no qFD or | |
847 | qPD entries. Their start address is -1 and their end address | |
848 | is 0. */ | |
849 | if (VALID_CURR_MODULE && (CURR_MODULE_START == -1) && (CURR_MODULE_END == 0)) | |
850 | { | |
851 | ||
852 | mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; | |
853 | ||
854 | #ifdef DUMPING | |
855 | if (dumping) | |
856 | printf ("Module with data only %s\n", mod_name_string); | |
857 | #endif | |
858 | ||
859 | /* We'll skip the rest (it makes error-checking easier), and | |
860 | just make an empty pst. Right now empty psts are not put | |
861 | in the pst chain, so all this is for naught, but later it | |
862 | might help. */ | |
863 | ||
864 | pst = hpread_start_psymtab (objfile, | |
865 | section_offsets, /* ?? */ | |
866 | mod_name_string, | |
867 | CURR_MODULE_START, /* Low text address: bogus! */ | |
868 | (CURR_MODULE_ISYM * sizeof (struct dntt_type_block)), | |
869 | /* ldsymoff */ | |
870 | global_syms, | |
871 | static_syms); | |
872 | ||
873 | pst = hpread_end_psymtab (pst, | |
874 | NULL, /* psymtab_include_list */ | |
875 | 0, /* includes_used */ | |
876 | end_sym * sizeof (struct dntt_type_block), | |
877 | /* byte index in LNTT of end | |
878 | = capping symbol offset | |
879 | = LDSYMOFF of nextfile */ | |
880 | 0, /* text high */ | |
881 | NULL, /* dependency_list */ | |
882 | 0); /* dependencies_used */ | |
883 | ||
884 | global_syms = objfile->global_psymbols.next; | |
885 | static_syms = objfile->static_psymbols.next; | |
886 | ||
887 | curr_md++; | |
888 | } | |
889 | else if (VALID_CURR_MODULE && | |
890 | ((CURR_MODULE_START == 0) || (CURR_MODULE_START == -1) || | |
891 | (CURR_MODULE_END == 0) || (CURR_MODULE_END == -1))) | |
892 | { | |
893 | TELL_OBJFILE; | |
894 | warning ("Module \"%s\" [0x%x] has non-standard addresses. It starts at 0x%x, ends at 0x%x, and will be skipped.", | |
895 | mod_name_string, curr_md, start_adr, end_adr); | |
896 | /* On to next module */ | |
897 | curr_md++; | |
898 | } | |
899 | else | |
900 | { | |
901 | /* First check if we are looking at a file with code in it | |
902 | that does not overlap the current module's code range */ | |
903 | ||
904 | if (VALID_CURR_FILE ? (VALID_CURR_MODULE ? (CURR_FILE_END < CURR_MODULE_START) : 1) : 0) | |
905 | { | |
906 | ||
907 | /* Looking at file not corresponding to any module, | |
908 | create a psymtab for it */ | |
909 | full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile]; | |
910 | start_adr = CURR_FILE_START; | |
911 | end_adr = CURR_FILE_END; | |
912 | start_sym = CURR_FILE_ISYM; | |
913 | ||
914 | /* Check if there are any procedures not handled until now, that | |
915 | begin before the start address of this file, and if so, adjust | |
916 | this module's start address to include them. This handles routines that | |
917 | are in between file or module ranges for some reason (probably | |
918 | indicates a compiler bug */ | |
919 | ||
920 | if (CURR_PROC_START < start_adr) | |
921 | { | |
922 | TELL_OBJFILE; | |
923 | warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", | |
924 | &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); | |
925 | start_adr = CURR_PROC_START; | |
926 | if (CURR_PROC_ISYM < start_sym) | |
927 | start_sym = CURR_PROC_ISYM; | |
928 | } | |
929 | ||
930 | /* Sometimes (compiler bug -- COBOL) the module end address is higher | |
931 | than the start address of the next module, so check for that and | |
932 | adjust accordingly */ | |
933 | ||
934 | if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) | |
935 | { | |
936 | TELL_OBJFILE; | |
937 | warning ("File \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", | |
938 | full_name_string, curr_fd); | |
939 | end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
940 | } | |
941 | if (VALID_MODULE (curr_md) && (CURR_MODULE_START <= end_adr)) | |
942 | { | |
943 | TELL_OBJFILE; | |
944 | warning ("File \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", | |
945 | full_name_string, curr_fd); | |
946 | end_adr = CURR_MODULE_START - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
947 | } | |
948 | ||
949 | ||
950 | #ifdef DUMPING | |
951 | if (dumping) | |
952 | { | |
953 | printf ("Make new psymtab for file %s (%x to %x).\n", | |
954 | full_name_string, start_adr, end_adr); | |
955 | } | |
956 | #endif | |
957 | /* Create the basic psymtab, connecting it in the list | |
958 | for this objfile and pointing its symbol entries | |
959 | to the current end of the symbol areas in the objfile. | |
960 | ||
961 | The "ldsymoff" parameter is the byte offset in the LNTT | |
962 | of the first symbol in this file. Some day we should | |
963 | turn this into an index (fix in hp-symtab-read.c as well). | |
964 | And it's not even the right byte offset, as we're using | |
965 | the size of a union! FIXME! */ | |
966 | pst = hpread_start_psymtab (objfile, | |
967 | section_offsets, /* ?? */ | |
968 | full_name_string, | |
969 | start_adr, /* Low text address */ | |
970 | (start_sym * sizeof (struct dntt_type_block)), | |
971 | /* ldsymoff */ | |
972 | global_syms, | |
973 | static_syms); | |
974 | ||
975 | /* Set up to only enter each class referenced in this module once. */ | |
976 | class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries)); | |
977 | B_CLRALL (class_entered, pxdb_header_p->cd_entries); | |
978 | ||
979 | /* Scan the procedure descriptors for procedures in the current | |
980 | file, based on the starting addresses. */ | |
981 | ||
982 | syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
983 | start_adr, end_adr, | |
984 | pst, vt_bits, objfile, section_offsets); | |
985 | ||
986 | /* Get ending symbol offset */ | |
987 | ||
988 | end_sym = 0; | |
989 | /* First check for starting index before previous psymtab */ | |
990 | if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) | |
991 | { | |
992 | end_sym = find_next_pst_start (start_sym); | |
993 | } | |
994 | /* Look for next start index of a file or module, or procedure */ | |
995 | if (!end_sym) | |
996 | { | |
997 | int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); | |
998 | int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md, pxdb_header_p); | |
999 | int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); | |
1000 | ||
1001 | if (next_file_isym && next_module_isym) | |
1002 | { | |
1003 | /* pick lower of next file or module start index */ | |
1004 | end_sym = min (next_file_isym, next_module_isym); | |
1005 | } | |
1006 | else | |
1007 | { | |
1008 | /* one of them is zero, pick the other */ | |
1009 | end_sym = max (next_file_isym, next_module_isym); | |
1010 | } | |
1011 | ||
1012 | /* As a precaution, check next procedure index too */ | |
1013 | if (!end_sym) | |
1014 | end_sym = next_proc_isym; | |
1015 | else | |
1016 | end_sym = min (end_sym, next_proc_isym); | |
1017 | } | |
1018 | ||
1019 | /* Couldn't find procedure, file, or module, use globals as default */ | |
1020 | if (!end_sym) | |
1021 | end_sym = pxdb_header_p->globals; | |
1022 | ||
1023 | #ifdef DUMPING | |
1024 | if (dumping) | |
1025 | { | |
1026 | printf ("File psymtab indices: %x to %x\n", start_sym, end_sym); | |
1027 | } | |
1028 | #endif | |
1029 | ||
1030 | pst = hpread_end_psymtab (pst, | |
1031 | NULL, /* psymtab_include_list */ | |
1032 | 0, /* includes_used */ | |
1033 | end_sym * sizeof (struct dntt_type_block), | |
1034 | /* byte index in LNTT of end | |
1035 | = capping symbol offset | |
1036 | = LDSYMOFF of nextfile */ | |
1037 | end_adr, /* text high */ | |
1038 | NULL, /* dependency_list */ | |
1039 | 0); /* dependencies_used */ | |
1040 | ||
1041 | record_pst_syms (start_sym, end_sym); | |
1042 | ||
1043 | if (NULL == pst) | |
1044 | warning ("No symbols in psymtab for file \"%s\" [0x%x].", full_name_string, curr_fd); | |
1045 | ||
1046 | #ifdef DUMPING | |
1047 | if (dumping) | |
1048 | { | |
1049 | printf ("Made new psymtab for file %s (%x to %x), sym %x to %x.\n", | |
1050 | full_name_string, start_adr, end_adr, CURR_FILE_ISYM, end_sym); | |
1051 | } | |
1052 | #endif | |
1053 | /* Prepare for the next psymtab. */ | |
1054 | global_syms = objfile->global_psymbols.next; | |
1055 | static_syms = objfile->static_psymbols.next; | |
1056 | free (class_entered); | |
1057 | ||
1058 | curr_fd++; | |
1059 | } /* Psymtab for file */ | |
1060 | else | |
1061 | { | |
1062 | /* We have a module for which we create a psymtab */ | |
1063 | ||
1064 | mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; | |
1065 | ||
1066 | /* We will include the code ranges of any files that happen to | |
1067 | overlap with this module */ | |
1068 | ||
1069 | /* So, first pick the lower of the file's and module's start addresses */ | |
1070 | start_adr = CURR_MODULE_START; | |
1071 | if (VALID_CURR_FILE) | |
1072 | { | |
1073 | if (CURR_FILE_START < CURR_MODULE_START) | |
1074 | { | |
1075 | TELL_OBJFILE; | |
1076 | warning ("File \"%s\" [0x%x] crosses beginning of module \"%s\".", | |
1077 | &vt_bits[(long) qFD[curr_fd].sbFile], | |
1078 | curr_fd, mod_name_string); | |
1079 | ||
1080 | start_adr = CURR_FILE_START; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /* Also pick the lower of the file's and the module's start symbol indices */ | |
1085 | start_sym = CURR_MODULE_ISYM; | |
1086 | if (VALID_CURR_FILE && (CURR_FILE_ISYM < CURR_MODULE_ISYM)) | |
1087 | start_sym = CURR_FILE_ISYM; | |
1088 | ||
1089 | /* For the end address, we scan through the files till we find one | |
1090 | that overlaps the current module but ends beyond it; if no such file exists we | |
1091 | simply use the module's start address. | |
1092 | (Note, if file entries themselves overlap | |
1093 | we take the longest overlapping extension beyond the end of the module...) | |
1094 | We assume that modules never overlap. */ | |
1095 | ||
1096 | end_adr = CURR_MODULE_END; | |
1097 | ||
1098 | if (VALID_CURR_FILE) | |
1099 | { | |
1100 | while (VALID_CURR_FILE && (CURR_FILE_START < end_adr)) | |
1101 | { | |
1102 | ||
1103 | #ifdef DUMPING | |
1104 | if (dumping) | |
1105 | printf ("Maybe skipping file %s which overlaps with module %s\n", | |
1106 | &vt_bits[(long) qFD[curr_fd].sbFile], mod_name_string); | |
1107 | #endif | |
1108 | if (CURR_FILE_END > end_adr) | |
1109 | { | |
1110 | TELL_OBJFILE; | |
1111 | warning ("File \"%s\" [0x%x] crosses end of module \"%s\".", | |
1112 | &vt_bits[(long) qFD[curr_fd].sbFile], | |
1113 | curr_fd, mod_name_string); | |
1114 | end_adr = CURR_FILE_END; | |
1115 | } | |
1116 | curr_fd++; | |
1117 | } | |
1118 | curr_fd--; /* back up after going too far */ | |
1119 | } | |
1120 | ||
1121 | /* Sometimes (compiler bug -- COBOL) the module end address is higher | |
1122 | than the start address of the next module, so check for that and | |
1123 | adjust accordingly */ | |
1124 | ||
1125 | if (VALID_MODULE (curr_md + 1) && (MODULE_START (curr_md + 1) <= end_adr)) | |
1126 | { | |
1127 | TELL_OBJFILE; | |
1128 | warning ("Module \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", | |
1129 | mod_name_string, curr_md); | |
1130 | end_adr = MODULE_START (curr_md + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
1131 | } | |
1132 | if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) | |
1133 | { | |
1134 | TELL_OBJFILE; | |
1135 | warning ("Module \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", | |
1136 | mod_name_string, curr_md); | |
1137 | end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
1138 | } | |
1139 | ||
1140 | /* Use one file to get the full name for the module. This | |
1141 | situation can arise if there is executable code in a #include | |
1142 | file. Each file with code in it gets a qFD. Files which don't | |
1143 | contribute code don't get a qFD, even if they include files | |
1144 | which do, e.g.: | |
1145 | ||
1146 | body.c: rtn.h: | |
1147 | int x; int main() { | |
1148 | #include "rtn.h" return x; | |
1149 | } | |
1150 | ||
1151 | There will a qFD for "rtn.h",and a qMD for "body.c", | |
1152 | but no qMD for "rtn.h" or qFD for "body.c"! | |
1153 | ||
1154 | We pick the name of the last file to overlap with this | |
1155 | module. C convention is to put include files first. In a | |
1156 | perfect world, we could check names and use the file whose full | |
1157 | path name ends with the module name. */ | |
1158 | ||
1159 | if (VALID_CURR_FILE) | |
1160 | full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile]; | |
1161 | else | |
1162 | full_name_string = mod_name_string; | |
1163 | ||
1164 | /* Check if there are any procedures not handled until now, that | |
1165 | begin before the start address we have now, and if so, adjust | |
1166 | this psymtab's start address to include them. This handles routines that | |
1167 | are in between file or module ranges for some reason (probably | |
1168 | indicates a compiler bug */ | |
1169 | ||
1170 | if (CURR_PROC_START < start_adr) | |
1171 | { | |
1172 | TELL_OBJFILE; | |
1173 | warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", | |
1174 | &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); | |
1175 | start_adr = CURR_PROC_START; | |
1176 | if (CURR_PROC_ISYM < start_sym) | |
1177 | start_sym = CURR_PROC_ISYM; | |
1178 | } | |
1179 | ||
1180 | #ifdef DUMPING | |
1181 | if (dumping) | |
1182 | { | |
1183 | printf ("Make new psymtab for module %s (%x to %x), using file %s\n", | |
1184 | mod_name_string, start_adr, end_adr, full_name_string); | |
1185 | } | |
1186 | #endif | |
1187 | /* Create the basic psymtab, connecting it in the list | |
1188 | for this objfile and pointing its symbol entries | |
1189 | to the current end of the symbol areas in the objfile. | |
1190 | ||
1191 | The "ldsymoff" parameter is the byte offset in the LNTT | |
1192 | of the first symbol in this file. Some day we should | |
1193 | turn this into an index (fix in hp-symtab-read.c as well). | |
1194 | And it's not even the right byte offset, as we're using | |
1195 | the size of a union! FIXME! */ | |
1196 | pst = hpread_start_psymtab (objfile, | |
1197 | section_offsets, /* ?? */ | |
1198 | full_name_string, | |
1199 | start_adr, /* Low text address */ | |
1200 | (start_sym * sizeof (struct dntt_type_block)), | |
1201 | /* ldsymoff */ | |
1202 | global_syms, | |
1203 | static_syms); | |
1204 | ||
1205 | /* Set up to only enter each class referenced in this module once. */ | |
1206 | class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries)); | |
1207 | B_CLRALL (class_entered, pxdb_header_p->cd_entries); | |
1208 | ||
1209 | /* Scan the procedure descriptors for procedures in the current | |
1210 | module, based on the starting addresses. */ | |
1211 | ||
1212 | syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
1213 | start_adr, end_adr, | |
1214 | pst, vt_bits, objfile, section_offsets); | |
1215 | ||
1216 | /* Get ending symbol offset */ | |
1217 | ||
1218 | end_sym = 0; | |
1219 | /* First check for starting index before previous psymtab */ | |
1220 | if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) | |
1221 | { | |
1222 | end_sym = find_next_pst_start (start_sym); | |
1223 | } | |
1224 | /* Look for next start index of a file or module, or procedure */ | |
1225 | if (!end_sym) | |
1226 | { | |
1227 | int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); | |
1228 | int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md + 1, pxdb_header_p); | |
1229 | int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); | |
1230 | ||
1231 | if (next_file_isym && next_module_isym) | |
1232 | { | |
1233 | /* pick lower of next file or module start index */ | |
1234 | end_sym = min (next_file_isym, next_module_isym); | |
1235 | } | |
1236 | else | |
1237 | { | |
1238 | /* one of them is zero, pick the other */ | |
1239 | end_sym = max (next_file_isym, next_module_isym); | |
1240 | } | |
1241 | ||
1242 | /* As a precaution, check next procedure index too */ | |
1243 | if (!end_sym) | |
1244 | end_sym = next_proc_isym; | |
1245 | else | |
1246 | end_sym = min (end_sym, next_proc_isym); | |
1247 | } | |
1248 | ||
1249 | /* Couldn't find procedure, file, or module, use globals as default */ | |
1250 | if (!end_sym) | |
1251 | end_sym = pxdb_header_p->globals; | |
1252 | ||
1253 | #ifdef DUMPING | |
1254 | if (dumping) | |
1255 | { | |
1256 | printf ("Module psymtab indices: %x to %x\n", start_sym, end_sym); | |
1257 | } | |
1258 | #endif | |
1259 | ||
1260 | pst = hpread_end_psymtab (pst, | |
1261 | NULL, /* psymtab_include_list */ | |
1262 | 0, /* includes_used */ | |
1263 | end_sym * sizeof (struct dntt_type_block), | |
1264 | /* byte index in LNTT of end | |
1265 | = capping symbol offset | |
1266 | = LDSYMOFF of nextfile */ | |
1267 | end_adr, /* text high */ | |
1268 | NULL, /* dependency_list */ | |
1269 | 0); /* dependencies_used */ | |
1270 | ||
1271 | record_pst_syms (start_sym, end_sym); | |
1272 | ||
1273 | if (NULL == pst) | |
1274 | warning ("No symbols in psymtab for module \"%s\" [0x%x].", mod_name_string, curr_md); | |
1275 | ||
1276 | #ifdef DUMPING | |
1277 | if (dumping) | |
1278 | { | |
1279 | printf ("Made new psymtab for module %s (%x to %x), sym %x to %x.\n", | |
1280 | mod_name_string, start_adr, end_adr, CURR_MODULE_ISYM, end_sym); | |
1281 | } | |
1282 | #endif | |
1283 | ||
1284 | /* Prepare for the next psymtab. */ | |
1285 | global_syms = objfile->global_psymbols.next; | |
1286 | static_syms = objfile->static_psymbols.next; | |
1287 | free (class_entered); | |
1288 | ||
1289 | curr_md++; | |
1290 | curr_fd++; | |
1291 | } /* psymtab for module */ | |
1292 | } /* psymtab for non-bogus file or module */ | |
1293 | } /* End of while loop over all files & modules */ | |
1294 | ||
1295 | /* There may be some routines after all files and modules -- these will get | |
1296 | inserted in a separate new module of their own */ | |
1297 | if (VALID_CURR_PROC) | |
1298 | { | |
1299 | start_adr = CURR_PROC_START; | |
1300 | end_adr = qPD[pxdb_header_p->pd_entries - 1].adrEnd; | |
1301 | TELL_OBJFILE; | |
1302 | warning ("Found functions beyond end of all files and modules [0x%x].", curr_pd); | |
1303 | #ifdef DUMPING | |
1304 | if (dumping) | |
1305 | { | |
1306 | printf ("Orphan functions at end, PD %d and beyond (%x to %x)\n", | |
1307 | curr_pd, start_adr, end_adr); | |
1308 | } | |
1309 | #endif | |
1310 | pst = hpread_start_psymtab (objfile, | |
1311 | section_offsets, /* ?? */ | |
1312 | "orphans", | |
1313 | start_adr, /* Low text address */ | |
1314 | (CURR_PROC_ISYM * sizeof (struct dntt_type_block)), | |
1315 | /* ldsymoff */ | |
1316 | global_syms, | |
1317 | static_syms); | |
1318 | ||
1319 | scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
1320 | start_adr, end_adr, | |
1321 | pst, vt_bits, objfile, section_offsets); | |
1322 | ||
1323 | pst = hpread_end_psymtab (pst, | |
1324 | NULL, /* psymtab_include_list */ | |
1325 | 0, /* includes_used */ | |
1326 | pxdb_header_p->globals * sizeof (struct dntt_type_block), | |
1327 | /* byte index in LNTT of end | |
1328 | = capping symbol offset | |
1329 | = LDSYMOFF of nextfile */ | |
1330 | end_adr, /* text high */ | |
1331 | NULL, /* dependency_list */ | |
1332 | 0); /* dependencies_used */ | |
1333 | } | |
1334 | ||
1335 | ||
1336 | #ifdef NEVER_NEVER | |
1337 | /* Now build psts for non-module things (in the tail of | |
1338 | the LNTT, after the last END MODULE entry). | |
1339 | ||
1340 | If null psts were kept on the chain, this would be | |
1341 | a solution. FIXME */ | |
1342 | pst = hpread_start_psymtab (objfile, | |
1343 | section_offsets, | |
1344 | "globals", | |
1345 | 0, | |
1346 | (pxdb_header_p->globals | |
1347 | * sizeof (struct dntt_type_block)), | |
1348 | objfile->global_psymbols.next, | |
1349 | objfile->static_psymbols.next); | |
1350 | hpread_end_psymtab (pst, | |
1351 | NULL, 0, | |
1352 | (max_LNTT_sym_index * sizeof (struct dntt_type_block)), | |
1353 | 0, | |
1354 | NULL, 0); | |
1355 | #endif | |
1356 | ||
1357 | clear_pst_syms (); | |
1358 | ||
1359 | return 1; | |
1360 | ||
1361 | } /* End of hpread_quick_traverse. */ | |
1362 | \f | |
1363 | ||
1364 | /* Get appropriate header, based on pxdb type. | |
1365 | Return value: 1 if ok, 0 if not */ | |
1366 | int | |
1367 | hpread_get_header (objfile, pxdb_header_p) | |
1368 | struct objfile *objfile; | |
1369 | PXDB_header_ptr pxdb_header_p; | |
1370 | { | |
1371 | asection *pinfo_section, *debug_section, *header_section; | |
1372 | ||
1373 | #ifdef DUMPING | |
1374 | /* Turn on for debugging information */ | |
1375 | static int dumping = 0; | |
1376 | #endif | |
1377 | ||
1378 | header_section = bfd_get_section_by_name (objfile->obfd, "$HEADER$"); | |
1379 | if (!header_section) | |
1380 | { | |
1381 | /* We don't have either PINFO or DEBUG sections. But | |
1382 | stuff like "libc.sl" has no debug info. There's no | |
1383 | need to warn the user of this, as it may be ok. The | |
1384 | caller will figure it out and issue any needed | |
1385 | messages. */ | |
1386 | #ifdef DUMPING | |
1387 | if (dumping) | |
1388 | printf ("==No debug info at all for %s.\n", objfile->name); | |
1389 | #endif | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | /* We would like either a $DEBUG$ or $PINFO$ section. | |
1395 | Once we know which, we can understand the header | |
1396 | data (which we have defined to suit the more common | |
1397 | $DEBUG$ case). */ | |
1398 | debug_section = bfd_get_section_by_name (objfile->obfd, "$DEBUG$"); | |
1399 | pinfo_section = bfd_get_section_by_name (objfile->obfd, "$PINFO$"); | |
1400 | if (debug_section) | |
1401 | { | |
1402 | /* The expected case: normal pxdb header. */ | |
1403 | bfd_get_section_contents (objfile->obfd, header_section, | |
1404 | pxdb_header_p, 0, sizeof (PXDB_header)); | |
1405 | ||
1406 | if (!pxdb_header_p->pxdbed) | |
1407 | { | |
1408 | /* This shouldn't happen if we check in "symfile.c". */ | |
1409 | return 0; | |
1410 | } /* DEBUG section */ | |
1411 | } | |
1412 | ||
1413 | else if (pinfo_section) | |
1414 | { | |
1415 | /* The DOC case; we need to translate this into a | |
1416 | regular header. */ | |
1417 | DOC_info_PXDB_header doc_header; | |
1418 | ||
1419 | #ifdef DUMPING | |
1420 | if (dumping) | |
1421 | { | |
1422 | printf ("==OOps, PINFO, let's try to handle this, %s.\n", objfile->name); | |
1423 | } | |
1424 | #endif | |
1425 | ||
1426 | bfd_get_section_contents (objfile->obfd, | |
1427 | header_section, | |
1428 | &doc_header, 0, | |
1429 | sizeof (DOC_info_PXDB_header)); | |
1430 | ||
1431 | if (!doc_header.pxdbed) | |
1432 | { | |
1433 | /* This shouldn't happen if we check in "symfile.c". */ | |
1434 | warning ("File \"%s\" not processed by pxdb!", objfile->name); | |
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | /* Copy relevent fields to standard header passed in. */ | |
1439 | pxdb_header_p->pd_entries = doc_header.pd_entries; | |
1440 | pxdb_header_p->fd_entries = doc_header.fd_entries; | |
1441 | pxdb_header_p->md_entries = doc_header.md_entries; | |
1442 | pxdb_header_p->pxdbed = doc_header.pxdbed; | |
1443 | pxdb_header_p->bighdr = doc_header.bighdr; | |
1444 | pxdb_header_p->sa_header = doc_header.sa_header; | |
1445 | pxdb_header_p->inlined = doc_header.inlined; | |
1446 | pxdb_header_p->globals = doc_header.globals; | |
1447 | pxdb_header_p->time = doc_header.time; | |
1448 | pxdb_header_p->pg_entries = doc_header.pg_entries; | |
1449 | pxdb_header_p->functions = doc_header.functions; | |
1450 | pxdb_header_p->files = doc_header.files; | |
1451 | pxdb_header_p->cd_entries = doc_header.cd_entries; | |
1452 | pxdb_header_p->aa_entries = doc_header.aa_entries; | |
1453 | pxdb_header_p->oi_entries = doc_header.oi_entries; | |
1454 | pxdb_header_p->version = doc_header.version; | |
1455 | } /* PINFO section */ | |
1456 | ||
1457 | else | |
1458 | { | |
1459 | #ifdef DUMPING | |
1460 | if (dumping) | |
1461 | printf ("==No debug info at all for %s.\n", objfile->name); | |
1462 | #endif | |
1463 | ||
1464 | return 0; | |
1465 | ||
1466 | } | |
1467 | ||
1468 | return 1; | |
1469 | } /* End of hpread_get_header */ | |
1470 | #endif /* QUICK_LOOK_UP */ | |
1471 | \f | |
1472 | ||
1473 | /* Initialization for reading native HP C debug symbols from OBJFILE. | |
1474 | ||
1475 | Its only purpose in life is to set up the symbol reader's private | |
1476 | per-objfile data structures, and read in the raw contents of the debug | |
1477 | sections (attaching pointers to the debug info into the private data | |
1478 | structures). | |
1479 | ||
1480 | Since BFD doesn't know how to read debug symbols in a format-independent | |
1481 | way (and may never do so...), we have to do it ourselves. Note we may | |
1482 | be called on a file without native HP C debugging symbols. | |
1483 | ||
1484 | FIXME, there should be a cleaner peephole into the BFD environment | |
1485 | here. */ | |
1486 | void | |
1487 | hpread_symfile_init (objfile) | |
1488 | struct objfile *objfile; | |
1489 | { | |
1490 | asection *vt_section, *slt_section, *lntt_section, *gntt_section; | |
1491 | ||
1492 | /* Allocate struct to keep track of the symfile */ | |
1493 | objfile->sym_private = (PTR) | |
1494 | xmmalloc (objfile->md, sizeof (struct hpread_symfile_info)); | |
1495 | memset (objfile->sym_private, 0, sizeof (struct hpread_symfile_info)); | |
1496 | ||
1497 | /* We haven't read in any types yet. */ | |
1498 | TYPE_VECTOR (objfile) = 0; | |
1499 | ||
1500 | /* Read in data from the $GNTT$ subspace. */ | |
1501 | gntt_section = bfd_get_section_by_name (objfile->obfd, "$GNTT$"); | |
1502 | if (!gntt_section) | |
1503 | return; | |
1504 | ||
1505 | GNTT (objfile) | |
1506 | = obstack_alloc (&objfile->symbol_obstack, | |
1507 | bfd_section_size (objfile->obfd, gntt_section)); | |
1508 | ||
1509 | bfd_get_section_contents (objfile->obfd, gntt_section, GNTT (objfile), | |
1510 | 0, bfd_section_size (objfile->obfd, gntt_section)); | |
1511 | ||
1512 | GNTT_SYMCOUNT (objfile) | |
1513 | = bfd_section_size (objfile->obfd, gntt_section) | |
1514 | / sizeof (struct dntt_type_block); | |
1515 | ||
1516 | /* Read in data from the $LNTT$ subspace. Also keep track of the number | |
1517 | of LNTT symbols. | |
1518 | ||
1519 | FIXME: this could be moved into the psymtab-to-symtab expansion | |
1520 | code, and save startup time. At the moment this data is | |
1521 | still used, though. We'd need a way to tell hp-symtab-read.c | |
1522 | whether or not to load the LNTT. */ | |
1523 | lntt_section = bfd_get_section_by_name (objfile->obfd, "$LNTT$"); | |
1524 | if (!lntt_section) | |
1525 | return; | |
1526 | ||
1527 | LNTT (objfile) | |
1528 | = obstack_alloc (&objfile->symbol_obstack, | |
1529 | bfd_section_size (objfile->obfd, lntt_section)); | |
1530 | ||
1531 | bfd_get_section_contents (objfile->obfd, lntt_section, LNTT (objfile), | |
1532 | 0, bfd_section_size (objfile->obfd, lntt_section)); | |
1533 | ||
1534 | LNTT_SYMCOUNT (objfile) | |
1535 | = bfd_section_size (objfile->obfd, lntt_section) | |
1536 | / sizeof (struct dntt_type_block); | |
1537 | ||
1538 | /* Read in data from the $SLT$ subspace. $SLT$ contains information | |
1539 | on source line numbers. */ | |
1540 | slt_section = bfd_get_section_by_name (objfile->obfd, "$SLT$"); | |
1541 | if (!slt_section) | |
1542 | return; | |
1543 | ||
1544 | SLT (objfile) = | |
1545 | obstack_alloc (&objfile->symbol_obstack, | |
1546 | bfd_section_size (objfile->obfd, slt_section)); | |
1547 | ||
1548 | bfd_get_section_contents (objfile->obfd, slt_section, SLT (objfile), | |
1549 | 0, bfd_section_size (objfile->obfd, slt_section)); | |
1550 | ||
1551 | /* Read in data from the $VT$ subspace. $VT$ contains things like | |
1552 | names and constants. Keep track of the number of symbols in the VT. */ | |
1553 | vt_section = bfd_get_section_by_name (objfile->obfd, "$VT$"); | |
1554 | if (!vt_section) | |
1555 | return; | |
1556 | ||
1557 | VT_SIZE (objfile) = bfd_section_size (objfile->obfd, vt_section); | |
1558 | ||
1559 | VT (objfile) = | |
1560 | (char *) obstack_alloc (&objfile->symbol_obstack, | |
1561 | VT_SIZE (objfile)); | |
1562 | ||
1563 | bfd_get_section_contents (objfile->obfd, vt_section, VT (objfile), | |
1564 | 0, VT_SIZE (objfile)); | |
1565 | } | |
1566 | ||
1567 | /* Scan and build partial symbols for a symbol file. | |
1568 | ||
1569 | The minimal symbol table (either SOM or HP a.out) has already been | |
1570 | read in; all we need to do is setup partial symbols based on the | |
1571 | native debugging information. | |
1572 | ||
1573 | Note that the minimal table is produced by the linker, and has | |
1574 | only global routines in it; the psymtab is based on compiler- | |
1575 | generated debug information and has non-global | |
1576 | routines in it as well as files and class information. | |
1577 | ||
1578 | We assume hpread_symfile_init has been called to initialize the | |
1579 | symbol reader's private data structures. | |
1580 | ||
1581 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
1582 | various sections are (depending where the sections were actually loaded). | |
1583 | MAINLINE is true if we are reading the main symbol table (as | |
1584 | opposed to a shared lib or dynamically loaded file). */ | |
1585 | void | |
1586 | hpread_build_psymtabs (objfile, section_offsets, mainline) | |
1587 | struct objfile *objfile; | |
1588 | struct section_offsets *section_offsets; | |
1589 | int mainline; | |
1590 | { | |
1591 | ||
1592 | #ifdef DUMPING | |
1593 | /* Turn this on to get debugging output. */ | |
1594 | static int dumping = 0; | |
1595 | #endif | |
1596 | ||
1597 | char *namestring; | |
1598 | int past_first_source_file = 0; | |
1599 | struct cleanup *old_chain; | |
1600 | ||
1601 | int hp_symnum, symcount, i; | |
1602 | int scan_start = 0; | |
1603 | ||
1604 | union dnttentry *dn_bufp; | |
1605 | unsigned long valu; | |
1606 | char *p; | |
1607 | int texthigh = 0; | |
1608 | int have_name = 0; | |
1609 | ||
1610 | /* Current partial symtab */ | |
1611 | struct partial_symtab *pst; | |
1612 | ||
1613 | /* List of current psymtab's include files */ | |
1614 | char **psymtab_include_list; | |
1615 | int includes_allocated; | |
1616 | int includes_used; | |
1617 | ||
1618 | /* Index within current psymtab dependency list */ | |
1619 | struct partial_symtab **dependency_list; | |
1620 | int dependencies_used, dependencies_allocated; | |
1621 | ||
1622 | /* Just in case the stabs reader left turds lying around. */ | |
1623 | free_pending_blocks (); | |
1624 | make_cleanup ((make_cleanup_func) really_free_pendings, 0); | |
1625 | ||
1626 | pst = (struct partial_symtab *) 0; | |
1627 | ||
1628 | /* We shouldn't use alloca, instead use malloc/free. Doing so avoids | |
1629 | a number of problems with cross compilation and creating useless holes | |
1630 | in the stack when we have to allocate new entries. FIXME. */ | |
1631 | ||
1632 | includes_allocated = 30; | |
1633 | includes_used = 0; | |
1634 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1635 | sizeof (char *)); | |
1636 | ||
1637 | dependencies_allocated = 30; | |
1638 | dependencies_used = 0; | |
1639 | dependency_list = | |
1640 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1641 | sizeof (struct partial_symtab *)); | |
1642 | ||
1643 | old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile); | |
1644 | ||
1645 | last_source_file = 0; | |
1646 | ||
1647 | #ifdef QUICK_LOOK_UP | |
1648 | { | |
1649 | /* Begin code for new-style loading of quick look-up tables. */ | |
1650 | ||
1651 | /* elz: this checks whether the file has beeen processed by pxdb. | |
1652 | If not we would like to try to read the psymbols in | |
1653 | anyway, but it turns out to be not so easy. So this could | |
1654 | actually be commented out, but I leave it in, just in case | |
1655 | we decide to add support for non-pxdb-ed stuff in the future. */ | |
1656 | PXDB_header pxdb_header; | |
1657 | int found_modules_in_program; | |
1658 | ||
1659 | if (hpread_get_header (objfile, &pxdb_header)) | |
1660 | { | |
1661 | /* Build a minimal table. No types, no global variables, | |
1662 | no include files.... */ | |
1663 | #ifdef DUMPING | |
1664 | if (dumping) | |
1665 | printf ("\nNew method for %s\n", objfile->name); | |
1666 | #endif | |
1667 | ||
1668 | /* elz: quick_traverse returns true if it found | |
1669 | some modules in the main source file, other | |
1670 | than those in end.c | |
1671 | In C and C++, all the files have MODULES entries | |
1672 | in the LNTT, and the quick table traverse is all | |
1673 | based on finding these MODULES entries. Without | |
1674 | those it cannot work. | |
1675 | It happens that F77 programs don't have MODULES | |
1676 | so the quick traverse gets confused. F90 programs | |
1677 | have modules, and the quick method still works. | |
1678 | So, if modules (other than those in end.c) are | |
1679 | not found we give up on the quick table stuff, | |
1680 | and fall back on the slower method */ | |
1681 | found_modules_in_program = hpread_quick_traverse (objfile, | |
1682 | section_offsets, | |
1683 | GNTT (objfile), | |
1684 | VT (objfile), | |
1685 | &pxdb_header); | |
1686 | ||
1687 | discard_cleanups (old_chain); | |
1688 | ||
1689 | /* Set up to scan the global section of the LNTT. | |
1690 | ||
1691 | This field is not always correct: if there are | |
1692 | no globals, it will point to the last record in | |
1693 | the regular LNTT, which is usually an END MODULE. | |
1694 | ||
1695 | Since it might happen that there could be a file | |
1696 | with just one global record, there's no way to | |
1697 | tell other than by looking at the record, so that's | |
1698 | done below. */ | |
1699 | if (found_modules_in_program) | |
1700 | scan_start = pxdb_header.globals; | |
1701 | } | |
1702 | #ifdef DUMPING | |
1703 | else | |
1704 | { | |
1705 | if (dumping) | |
1706 | printf ("\nGoing on to old method for %s\n", objfile->name); | |
1707 | } | |
1708 | #endif | |
1709 | } | |
1710 | #endif /* QUICK_LOOK_UP */ | |
1711 | ||
1712 | /* Make two passes, one over the GNTT symbols, the other for the | |
1713 | LNTT symbols. | |
1714 | ||
1715 | JB comment: above isn't true--they only make one pass, over | |
1716 | the LNTT. */ | |
1717 | for (i = 0; i < 1; i++) | |
1718 | { | |
1719 | int within_function = 0; | |
1720 | ||
1721 | if (i) | |
1722 | symcount = GNTT_SYMCOUNT (objfile); | |
1723 | else | |
1724 | symcount = LNTT_SYMCOUNT (objfile); | |
1725 | ||
1726 | ||
1727 | for (hp_symnum = scan_start; hp_symnum < symcount; hp_symnum++) | |
1728 | { | |
1729 | QUIT; | |
1730 | if (i) | |
1731 | dn_bufp = hpread_get_gntt (hp_symnum, objfile); | |
1732 | else | |
1733 | dn_bufp = hpread_get_lntt (hp_symnum, objfile); | |
1734 | ||
1735 | if (dn_bufp->dblock.extension) | |
1736 | continue; | |
1737 | ||
1738 | /* Only handle things which are necessary for minimal symbols. | |
1739 | everything else is ignored. */ | |
1740 | switch (dn_bufp->dblock.kind) | |
1741 | { | |
1742 | case DNTT_TYPE_SRCFILE: | |
1743 | { | |
1744 | #ifdef QUICK_LOOK_UP | |
1745 | if (scan_start == hp_symnum | |
1746 | && symcount == hp_symnum + 1) | |
1747 | { | |
1748 | /* If there are NO globals in an executable, | |
1749 | PXDB's index to the globals will point to | |
1750 | the last record in the file, which | |
1751 | could be this record. (this happened for F77 libraries) | |
1752 | ignore it and be done! */ | |
1753 | continue; | |
1754 | } | |
1755 | #endif /* QUICK_LOOK_UP */ | |
1756 | ||
1757 | /* A source file of some kind. Note this may simply | |
1758 | be an included file. */ | |
1759 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1760 | ||
1761 | /* Check if this is the source file we are already working | |
1762 | with. */ | |
1763 | if (pst && !strcmp (namestring, pst->filename)) | |
1764 | continue; | |
1765 | ||
1766 | /* Check if this is an include file, if so check if we have | |
1767 | already seen it. Add it to the include list */ | |
1768 | p = strrchr (namestring, '.'); | |
1769 | if (!strcmp (p, ".h")) | |
1770 | { | |
1771 | int j, found; | |
1772 | ||
1773 | found = 0; | |
1774 | for (j = 0; j < includes_used; j++) | |
1775 | if (!strcmp (namestring, psymtab_include_list[j])) | |
1776 | { | |
1777 | found = 1; | |
1778 | break; | |
1779 | } | |
1780 | if (found) | |
1781 | continue; | |
1782 | ||
1783 | /* Add it to the list of includes seen so far and | |
1784 | allocate more include space if necessary. */ | |
1785 | psymtab_include_list[includes_used++] = namestring; | |
1786 | if (includes_used >= includes_allocated) | |
1787 | { | |
1788 | char **orig = psymtab_include_list; | |
1789 | ||
1790 | psymtab_include_list = (char **) | |
1791 | alloca ((includes_allocated *= 2) * | |
1792 | sizeof (char *)); | |
1793 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
1794 | includes_used * sizeof (char *)); | |
1795 | } | |
1796 | continue; | |
1797 | } | |
1798 | ||
1799 | if (pst) | |
1800 | { | |
1801 | if (!have_name) | |
1802 | { | |
1803 | pst->filename = (char *) | |
1804 | obstack_alloc (&pst->objfile->psymbol_obstack, | |
1805 | strlen (namestring) + 1); | |
1806 | strcpy (pst->filename, namestring); | |
1807 | have_name = 1; | |
1808 | continue; | |
1809 | } | |
1810 | continue; | |
1811 | } | |
1812 | ||
1813 | /* This is a bonafide new source file. | |
1814 | End the current partial symtab and start a new one. */ | |
1815 | ||
1816 | if (pst && past_first_source_file) | |
1817 | { | |
1818 | hpread_end_psymtab (pst, psymtab_include_list, | |
1819 | includes_used, | |
1820 | (hp_symnum | |
1821 | * sizeof (struct dntt_type_block)), | |
1822 | texthigh, | |
1823 | dependency_list, dependencies_used); | |
1824 | pst = (struct partial_symtab *) 0; | |
1825 | includes_used = 0; | |
1826 | dependencies_used = 0; | |
1827 | } | |
1828 | else | |
1829 | past_first_source_file = 1; | |
1830 | ||
1831 | valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); | |
1832 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1833 | pst = hpread_start_psymtab (objfile, section_offsets, | |
1834 | namestring, valu, | |
1835 | (hp_symnum | |
1836 | * sizeof (struct dntt_type_block)), | |
1837 | objfile->global_psymbols.next, | |
1838 | objfile->static_psymbols.next); | |
1839 | texthigh = valu; | |
1840 | have_name = 1; | |
1841 | continue; | |
1842 | } | |
1843 | ||
1844 | case DNTT_TYPE_MODULE: | |
1845 | /* A source file. It's still unclear to me what the | |
1846 | real difference between a DNTT_TYPE_SRCFILE and DNTT_TYPE_MODULE | |
1847 | is supposed to be. */ | |
1848 | ||
1849 | /* First end the previous psymtab */ | |
1850 | if (pst) | |
1851 | { | |
1852 | hpread_end_psymtab (pst, psymtab_include_list, includes_used, | |
1853 | ((hp_symnum - 1) | |
1854 | * sizeof (struct dntt_type_block)), | |
1855 | texthigh, | |
1856 | dependency_list, dependencies_used); | |
1857 | pst = (struct partial_symtab *) 0; | |
1858 | includes_used = 0; | |
1859 | dependencies_used = 0; | |
1860 | have_name = 0; | |
1861 | } | |
1862 | ||
1863 | /* Now begin a new module and a new psymtab for it */ | |
1864 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1865 | valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); | |
1866 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1867 | if (!pst) | |
1868 | { | |
1869 | pst = hpread_start_psymtab (objfile, section_offsets, | |
1870 | namestring, valu, | |
1871 | (hp_symnum | |
1872 | * sizeof (struct dntt_type_block)), | |
1873 | objfile->global_psymbols.next, | |
1874 | objfile->static_psymbols.next); | |
1875 | texthigh = valu; | |
1876 | have_name = 0; | |
1877 | } | |
1878 | continue; | |
1879 | ||
1880 | case DNTT_TYPE_FUNCTION: | |
1881 | case DNTT_TYPE_ENTRY: | |
1882 | /* The beginning of a function. DNTT_TYPE_ENTRY may also denote | |
1883 | a secondary entry point. */ | |
1884 | valu = dn_bufp->dfunc.hiaddr + ANOFFSET (section_offsets, | |
1885 | SECT_OFF_TEXT); | |
1886 | if (valu > texthigh) | |
1887 | texthigh = valu; | |
1888 | valu = dn_bufp->dfunc.lowaddr + | |
1889 | ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1890 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1891 | if (dn_bufp->dfunc.global) | |
1892 | add_psymbol_to_list (namestring, strlen (namestring), | |
1893 | VAR_NAMESPACE, LOC_BLOCK, | |
1894 | &objfile->global_psymbols, valu, | |
1895 | 0, language_unknown, objfile); | |
1896 | else | |
1897 | add_psymbol_to_list (namestring, strlen (namestring), | |
1898 | VAR_NAMESPACE, LOC_BLOCK, | |
1899 | &objfile->static_psymbols, valu, | |
1900 | 0, language_unknown, objfile); | |
1901 | within_function = 1; | |
1902 | continue; | |
1903 | ||
1904 | case DNTT_TYPE_DOC_FUNCTION: | |
1905 | valu = dn_bufp->ddocfunc.hiaddr + ANOFFSET (section_offsets, | |
1906 | SECT_OFF_TEXT); | |
1907 | if (valu > texthigh) | |
1908 | texthigh = valu; | |
1909 | valu = dn_bufp->ddocfunc.lowaddr + | |
1910 | ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1911 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1912 | if (dn_bufp->ddocfunc.global) | |
1913 | add_psymbol_to_list (namestring, strlen (namestring), | |
1914 | VAR_NAMESPACE, LOC_BLOCK, | |
1915 | &objfile->global_psymbols, valu, | |
1916 | 0, language_unknown, objfile); | |
1917 | else | |
1918 | add_psymbol_to_list (namestring, strlen (namestring), | |
1919 | VAR_NAMESPACE, LOC_BLOCK, | |
1920 | &objfile->static_psymbols, valu, | |
1921 | 0, language_unknown, objfile); | |
1922 | within_function = 1; | |
1923 | continue; | |
1924 | ||
1925 | case DNTT_TYPE_BEGIN: | |
1926 | case DNTT_TYPE_END: | |
1927 | /* We don't check MODULE end here, because there can be | |
1928 | symbols beyond the module end which properly belong to the | |
1929 | current psymtab -- so we wait till the next MODULE start */ | |
1930 | ||
1931 | ||
1932 | #ifdef QUICK_LOOK_UP | |
1933 | if (scan_start == hp_symnum | |
1934 | && symcount == hp_symnum + 1) | |
1935 | { | |
1936 | /* If there are NO globals in an executable, | |
1937 | PXDB's index to the globals will point to | |
1938 | the last record in the file, which is | |
1939 | probably an END MODULE, i.e. this record. | |
1940 | ignore it and be done! */ | |
1941 | continue; | |
1942 | } | |
1943 | #endif /* QUICK_LOOK_UP */ | |
1944 | ||
1945 | /* Scope block begin/end. We only care about function | |
1946 | and file blocks right now. */ | |
1947 | ||
1948 | if ((dn_bufp->dend.endkind == DNTT_TYPE_FUNCTION) || | |
1949 | (dn_bufp->dend.endkind == DNTT_TYPE_DOC_FUNCTION)) | |
1950 | within_function = 0; | |
1951 | continue; | |
1952 | ||
1953 | case DNTT_TYPE_SVAR: | |
1954 | case DNTT_TYPE_DVAR: | |
1955 | case DNTT_TYPE_TYPEDEF: | |
1956 | case DNTT_TYPE_TAGDEF: | |
1957 | { | |
1958 | /* Variables, typedefs an the like. */ | |
1959 | enum address_class storage; | |
1960 | namespace_enum namespace; | |
1961 | ||
1962 | /* Don't add locals to the partial symbol table. */ | |
1963 | if (within_function | |
1964 | && (dn_bufp->dblock.kind == DNTT_TYPE_SVAR | |
1965 | || dn_bufp->dblock.kind == DNTT_TYPE_DVAR)) | |
1966 | continue; | |
1967 | ||
1968 | /* TAGDEFs go into the structure namespace. */ | |
1969 | if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF) | |
1970 | namespace = STRUCT_NAMESPACE; | |
1971 | else | |
1972 | namespace = VAR_NAMESPACE; | |
1973 | ||
1974 | /* What kind of "storage" does this use? */ | |
1975 | if (dn_bufp->dblock.kind == DNTT_TYPE_SVAR) | |
1976 | storage = LOC_STATIC; | |
1977 | else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR | |
1978 | && dn_bufp->ddvar.regvar) | |
1979 | storage = LOC_REGISTER; | |
1980 | else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR) | |
1981 | storage = LOC_LOCAL; | |
1982 | else | |
1983 | storage = LOC_UNDEF; | |
1984 | ||
1985 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1986 | if (!pst) | |
1987 | { | |
1988 | pst = hpread_start_psymtab (objfile, section_offsets, | |
1989 | "globals", 0, | |
1990 | (hp_symnum | |
1991 | * sizeof (struct dntt_type_block)), | |
1992 | objfile->global_psymbols.next, | |
1993 | objfile->static_psymbols.next); | |
1994 | } | |
1995 | ||
1996 | /* Compute address of the data symbol */ | |
1997 | valu = dn_bufp->dsvar.location; | |
1998 | /* Relocate in case it's in a shared library */ | |
1999 | if (storage == LOC_STATIC) | |
2000 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2001 | ||
2002 | /* Luckily, dvar, svar, typedef, and tagdef all | |
2003 | have their "global" bit in the same place, so it works | |
2004 | (though it's bad programming practice) to reference | |
2005 | "dsvar.global" even though we may be looking at | |
2006 | any of the above four types. */ | |
2007 | if (dn_bufp->dsvar.global) | |
2008 | { | |
2009 | add_psymbol_to_list (namestring, strlen (namestring), | |
2010 | namespace, storage, | |
2011 | &objfile->global_psymbols, | |
2012 | valu, | |
2013 | 0, language_unknown, objfile); | |
2014 | } | |
2015 | else | |
2016 | { | |
2017 | add_psymbol_to_list (namestring, strlen (namestring), | |
2018 | namespace, storage, | |
2019 | &objfile->static_psymbols, | |
2020 | valu, | |
2021 | 0, language_unknown, objfile); | |
2022 | } | |
2023 | ||
2024 | /* For TAGDEF's, the above code added the tagname to the | |
2025 | struct namespace. This will cause tag "t" to be found | |
2026 | on a reference of the form "(struct t) x". But for | |
2027 | C++ classes, "t" will also be a typename, which we | |
2028 | want to find on a reference of the form "ptype t". | |
2029 | Therefore, we also add "t" to the var namespace. | |
2030 | Do the same for enum's due to the way aCC generates | |
2031 | debug info for these (see more extended comment | |
2032 | in hp-symtab-read.c). | |
2033 | We do the same for templates, so that "ptype t" | |
2034 | where "t" is a template also works. */ | |
2035 | if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF && | |
2036 | dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile)) | |
2037 | { | |
2038 | int global = dn_bufp->dtag.global; | |
2039 | /* Look ahead to see if it's a C++ class */ | |
2040 | dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile); | |
2041 | if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS || | |
2042 | dn_bufp->dblock.kind == DNTT_TYPE_ENUM || | |
2043 | dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE) | |
2044 | { | |
2045 | if (global) | |
2046 | { | |
2047 | add_psymbol_to_list (namestring, strlen (namestring), | |
2048 | VAR_NAMESPACE, storage, | |
2049 | &objfile->global_psymbols, | |
2050 | dn_bufp->dsvar.location, | |
2051 | 0, language_unknown, objfile); | |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | add_psymbol_to_list (namestring, strlen (namestring), | |
2056 | VAR_NAMESPACE, storage, | |
2057 | &objfile->static_psymbols, | |
2058 | dn_bufp->dsvar.location, | |
2059 | 0, language_unknown, objfile); | |
2060 | } | |
2061 | } | |
2062 | } | |
2063 | } | |
2064 | continue; | |
2065 | ||
2066 | case DNTT_TYPE_MEMENUM: | |
2067 | case DNTT_TYPE_CONST: | |
2068 | /* Constants and members of enumerated types. */ | |
2069 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
2070 | if (!pst) | |
2071 | { | |
2072 | pst = hpread_start_psymtab (objfile, section_offsets, | |
2073 | "globals", 0, | |
2074 | (hp_symnum | |
2075 | * sizeof (struct dntt_type_block)), | |
2076 | objfile->global_psymbols.next, | |
2077 | objfile->static_psymbols.next); | |
2078 | } | |
2079 | if (dn_bufp->dconst.global) | |
2080 | add_psymbol_to_list (namestring, strlen (namestring), | |
2081 | VAR_NAMESPACE, LOC_CONST, | |
2082 | &objfile->global_psymbols, 0, | |
2083 | 0, language_unknown, objfile); | |
2084 | else | |
2085 | add_psymbol_to_list (namestring, strlen (namestring), | |
2086 | VAR_NAMESPACE, LOC_CONST, | |
2087 | &objfile->static_psymbols, 0, | |
2088 | 0, language_unknown, objfile); | |
2089 | continue; | |
2090 | default: | |
2091 | continue; | |
2092 | } | |
2093 | } | |
2094 | } | |
2095 | ||
2096 | /* End any pending partial symbol table. */ | |
2097 | if (pst) | |
2098 | { | |
2099 | hpread_end_psymtab (pst, psymtab_include_list, includes_used, | |
2100 | hp_symnum * sizeof (struct dntt_type_block), | |
2101 | 0, dependency_list, dependencies_used); | |
2102 | } | |
2103 | ||
2104 | discard_cleanups (old_chain); | |
2105 | } | |
2106 | ||
2107 | /* Perform any local cleanups required when we are done with a particular | |
2108 | objfile. I.E, we are in the process of discarding all symbol information | |
2109 | for an objfile, freeing up all memory held for it, and unlinking the | |
2110 | objfile struct from the global list of known objfiles. */ | |
2111 | ||
2112 | void | |
2113 | hpread_symfile_finish (objfile) | |
2114 | struct objfile *objfile; | |
2115 | { | |
2116 | if (objfile->sym_private != NULL) | |
2117 | { | |
2118 | mfree (objfile->md, objfile->sym_private); | |
2119 | } | |
2120 | } | |
2121 | \f | |
2122 | ||
2123 | /* The remaining functions are all for internal use only. */ | |
2124 | ||
2125 | /* Various small functions to get entries in the debug symbol sections. */ | |
2126 | ||
2127 | union dnttentry * | |
2128 | hpread_get_lntt (index, objfile) | |
2129 | int index; | |
2130 | struct objfile *objfile; | |
2131 | { | |
2132 | return (union dnttentry *) | |
2133 | &(LNTT (objfile)[(index * sizeof (struct dntt_type_block))]); | |
2134 | } | |
2135 | ||
2136 | static union dnttentry * | |
2137 | hpread_get_gntt (index, objfile) | |
2138 | int index; | |
2139 | struct objfile *objfile; | |
2140 | { | |
2141 | return (union dnttentry *) | |
2142 | &(GNTT (objfile)[(index * sizeof (struct dntt_type_block))]); | |
2143 | } | |
2144 | ||
2145 | union sltentry * | |
2146 | hpread_get_slt (index, objfile) | |
2147 | int index; | |
2148 | struct objfile *objfile; | |
2149 | { | |
2150 | return (union sltentry *) &(SLT (objfile)[index * sizeof (union sltentry)]); | |
2151 | } | |
2152 | ||
2153 | /* Get the low address associated with some symbol (typically the start | |
2154 | of a particular source file or module). Since that information is not | |
2155 | stored as part of the DNTT_TYPE_MODULE or DNTT_TYPE_SRCFILE symbol we must infer it from | |
2156 | the existance of DNTT_TYPE_FUNCTION symbols. */ | |
2157 | ||
2158 | static unsigned long | |
2159 | hpread_get_textlow (global, index, objfile, symcount) | |
2160 | int global; | |
2161 | int index; | |
2162 | struct objfile *objfile; | |
2163 | int symcount; | |
2164 | { | |
2165 | union dnttentry *dn_bufp; | |
2166 | struct minimal_symbol *msymbol; | |
2167 | ||
2168 | /* Look for a DNTT_TYPE_FUNCTION symbol. */ | |
2169 | if (index < symcount) /* symcount is the number of symbols in */ | |
2170 | { /* the dbinfo, LNTT table */ | |
2171 | do | |
2172 | { | |
2173 | if (global) | |
2174 | dn_bufp = hpread_get_gntt (index++, objfile); | |
2175 | else | |
2176 | dn_bufp = hpread_get_lntt (index++, objfile); | |
2177 | } | |
2178 | while (dn_bufp->dblock.kind != DNTT_TYPE_FUNCTION | |
2179 | && dn_bufp->dblock.kind != DNTT_TYPE_DOC_FUNCTION | |
2180 | && dn_bufp->dblock.kind != DNTT_TYPE_END | |
2181 | && index < symcount); | |
2182 | } | |
2183 | ||
2184 | /* Avoid going past a DNTT_TYPE_END when looking for a DNTT_TYPE_FUNCTION. This | |
2185 | might happen when a sourcefile has no functions. */ | |
2186 | if (dn_bufp->dblock.kind == DNTT_TYPE_END) | |
2187 | return 0; | |
2188 | ||
2189 | /* Avoid going past the end of the LNTT file */ | |
2190 | if (index == symcount) | |
2191 | return 0; | |
2192 | ||
2193 | /* The minimal symbols are typically more accurate for some reason. */ | |
2194 | if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION) | |
2195 | msymbol = lookup_minimal_symbol (dn_bufp->dfunc.name + VT (objfile), NULL, | |
2196 | objfile); | |
2197 | else /* must be a DNTT_TYPE_DOC_FUNCTION */ | |
2198 | msymbol = lookup_minimal_symbol (dn_bufp->ddocfunc.name + VT (objfile), NULL, | |
2199 | objfile); | |
2200 | ||
2201 | if (msymbol) | |
2202 | return SYMBOL_VALUE_ADDRESS (msymbol); | |
2203 | else | |
2204 | return dn_bufp->dfunc.lowaddr; | |
2205 | } | |
2206 | ||
2207 | /* Allocate and partially fill a partial symtab. It will be | |
2208 | completely filled at the end of the symbol list. | |
2209 | ||
2210 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2211 | is the address relative to which its symbols are (incremental) or 0 | |
2212 | (normal). */ | |
2213 | ||
2214 | static struct partial_symtab * | |
2215 | hpread_start_psymtab (objfile, section_offsets, | |
2216 | filename, textlow, ldsymoff, global_syms, static_syms) | |
2217 | struct objfile *objfile; | |
2218 | struct section_offsets *section_offsets; | |
2219 | char *filename; | |
2220 | CORE_ADDR textlow; | |
2221 | int ldsymoff; | |
2222 | struct partial_symbol **global_syms; | |
2223 | struct partial_symbol **static_syms; | |
2224 | { | |
2225 | int offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2226 | extern void hpread_psymtab_to_symtab (); | |
2227 | struct partial_symtab *result = | |
2228 | start_psymtab_common (objfile, section_offsets, | |
2229 | filename, textlow, global_syms, static_syms); | |
2230 | ||
2231 | result->textlow += offset; | |
2232 | result->read_symtab_private = (char *) | |
2233 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); | |
2234 | LDSYMOFF (result) = ldsymoff; | |
2235 | result->read_symtab = hpread_psymtab_to_symtab; | |
2236 | ||
2237 | return result; | |
2238 | } | |
2239 | \f | |
2240 | ||
2241 | /* Close off the current usage of PST. | |
2242 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
2243 | ||
2244 | capping_symbol_offset --Byte index in LNTT or GNTT of the | |
2245 | last symbol processed during the build | |
2246 | of the previous pst. | |
2247 | ||
2248 | FIXME: List variables and peculiarities of same. */ | |
2249 | ||
2250 | static struct partial_symtab * | |
2251 | hpread_end_psymtab (pst, include_list, num_includes, capping_symbol_offset, | |
2252 | capping_text, dependency_list, number_dependencies) | |
2253 | struct partial_symtab *pst; | |
2254 | char **include_list; | |
2255 | int num_includes; | |
2256 | int capping_symbol_offset; | |
2257 | CORE_ADDR capping_text; | |
2258 | struct partial_symtab **dependency_list; | |
2259 | int number_dependencies; | |
2260 | { | |
2261 | int i; | |
2262 | struct objfile *objfile = pst->objfile; | |
2263 | int offset = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT); | |
2264 | ||
2265 | #ifdef DUMPING | |
2266 | /* Turn on to see what kind of a psymtab we've built. */ | |
2267 | static int dumping = 0; | |
2268 | #endif | |
2269 | ||
2270 | if (capping_symbol_offset != -1) | |
2271 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); | |
2272 | else | |
2273 | LDSYMLEN (pst) = 0; | |
2274 | pst->texthigh = capping_text + offset; | |
2275 | ||
2276 | pst->n_global_syms = | |
2277 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2278 | pst->n_static_syms = | |
2279 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2280 | ||
2281 | #ifdef DUMPING | |
2282 | if (dumping) | |
2283 | { | |
2284 | printf ("\nPst %s, LDSYMOFF %x (%x), LDSYMLEN %x (%x), globals %d, statics %d\n", | |
2285 | pst->filename, | |
2286 | LDSYMOFF (pst), | |
2287 | LDSYMOFF (pst) / sizeof (struct dntt_type_block), | |
2288 | LDSYMLEN (pst), | |
2289 | LDSYMLEN (pst) / sizeof (struct dntt_type_block), | |
2290 | pst->n_global_syms, pst->n_static_syms); | |
2291 | } | |
2292 | #endif | |
2293 | ||
2294 | pst->number_of_dependencies = number_dependencies; | |
2295 | if (number_dependencies) | |
2296 | { | |
2297 | pst->dependencies = (struct partial_symtab **) | |
2298 | obstack_alloc (&objfile->psymbol_obstack, | |
2299 | number_dependencies * sizeof (struct partial_symtab *)); | |
2300 | memcpy (pst->dependencies, dependency_list, | |
2301 | number_dependencies * sizeof (struct partial_symtab *)); | |
2302 | } | |
2303 | else | |
2304 | pst->dependencies = 0; | |
2305 | ||
2306 | for (i = 0; i < num_includes; i++) | |
2307 | { | |
2308 | struct partial_symtab *subpst = | |
2309 | allocate_psymtab (include_list[i], objfile); | |
2310 | ||
2311 | subpst->section_offsets = pst->section_offsets; | |
2312 | subpst->read_symtab_private = | |
2313 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
2314 | sizeof (struct symloc)); | |
2315 | LDSYMOFF (subpst) = | |
2316 | LDSYMLEN (subpst) = | |
2317 | subpst->textlow = | |
2318 | subpst->texthigh = 0; | |
2319 | ||
2320 | /* We could save slight bits of space by only making one of these, | |
2321 | shared by the entire set of include files. FIXME-someday. */ | |
2322 | subpst->dependencies = (struct partial_symtab **) | |
2323 | obstack_alloc (&objfile->psymbol_obstack, | |
2324 | sizeof (struct partial_symtab *)); | |
2325 | subpst->dependencies[0] = pst; | |
2326 | subpst->number_of_dependencies = 1; | |
2327 | ||
2328 | subpst->globals_offset = | |
2329 | subpst->n_global_syms = | |
2330 | subpst->statics_offset = | |
2331 | subpst->n_static_syms = 0; | |
2332 | ||
2333 | subpst->readin = 0; | |
2334 | subpst->symtab = 0; | |
2335 | subpst->read_symtab = pst->read_symtab; | |
2336 | } | |
2337 | ||
2338 | sort_pst_symbols (pst); | |
2339 | ||
2340 | /* If there is already a psymtab or symtab for a file of this name, remove it. | |
2341 | (If there is a symtab, more drastic things also happen.) | |
2342 | This happens in VxWorks. */ | |
2343 | free_named_symtabs (pst->filename); | |
2344 | ||
2345 | if (num_includes == 0 | |
2346 | && number_dependencies == 0 | |
2347 | && pst->n_global_syms == 0 | |
2348 | && pst->n_static_syms == 0) | |
2349 | { | |
2350 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
2351 | it is on the obstack, but we can forget to chain it on the list. | |
2352 | Empty psymtabs happen as a result of header files which don't have | |
2353 | any symbols in them. There can be a lot of them. But this check | |
2354 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2355 | is not empty, but we don't realize that. Fixing that without slowing | |
2356 | things down might be tricky. | |
2357 | It's also wrong if we're using the quick look-up tables, as | |
2358 | we can get empty psymtabs from modules with no routines in | |
2359 | them. */ | |
2360 | ||
2361 | discard_psymtab (pst); | |
2362 | ||
2363 | /* Indicate that psymtab was thrown away. */ | |
2364 | pst = (struct partial_symtab *) NULL; | |
2365 | ||
2366 | } | |
2367 | return pst; | |
2368 | } | |
2369 | ||
2370 | ||
2371 | /* End of hp-psymtab-read.c */ | |
2372 | ||
2373 | /* Set indentation to 4 spaces for Emacs; this file is | |
2374 | mostly non-GNU-ish in its style :-( */ | |
2375 | #if 0 | |
2376 | ***Local Variables: | |
2377 | ***c - basic - offset:4 | |
2378 | *** End: | |
2379 | #endif | |
2380 | ||
2381 |