Commit | Line | Data |
---|---|---|
65b07ddc DT |
1 | /* Read hp debug symbols and convert to internal format, for GDB. |
2 | Copyright 1993, 1996 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 | */ | |
26 | #include "hpread.h" | |
27 | #include "demangle.h" | |
28 | ||
29 | /* To generate dumping code, uncomment this define. The dumping | |
30 | * itself is controlled by routine-local statics called "dumping". | |
31 | */ | |
32 | /* #define DUMPING 1 */ | |
33 | ||
34 | /* To use the quick look-up tables, uncomment this define. | |
35 | */ | |
36 | #define QUICK_LOOK_UP 0 | |
37 | ||
38 | /* To call PXDB to process un-processed files, uncomment this define. | |
39 | */ | |
40 | #define USE_PXDB 1 | |
41 | ||
42 | /* Forward procedure declarations */ | |
43 | ||
44 | void hpread_symfile_init | |
45 | PARAMS ((struct objfile *)); | |
46 | ||
47 | void hpread_build_psymtabs | |
48 | PARAMS ((struct objfile *, struct section_offsets *, int)); | |
49 | ||
50 | void hpread_symfile_finish | |
51 | PARAMS ((struct objfile *)); | |
52 | ||
53 | static union dnttentry *hpread_get_gntt | |
54 | PARAMS ((int, struct objfile *)); | |
55 | ||
56 | static unsigned long hpread_get_textlow | |
57 | PARAMS ((int, int, struct objfile *, int)); | |
58 | ||
59 | static struct partial_symtab *hpread_start_psymtab | |
60 | PARAMS ((struct objfile *, struct section_offsets *, char *, CORE_ADDR, int, | |
61 | struct partial_symbol **, struct partial_symbol **)); | |
62 | ||
63 | static struct partial_symtab *hpread_end_psymtab | |
64 | PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, | |
65 | struct partial_symtab **, int)); | |
66 | ||
67 | /* End of forward routine declarations */ | |
68 | ||
69 | #ifdef USE_PXDB | |
70 | ||
71 | /************************************************** | |
72 | * | |
73 | * NOTE use of system files! May not be portable. | |
74 | */ | |
75 | ||
76 | #define PXDB_SVR4 "/opt/langtools/bin/pxdb" | |
77 | #define PXDB_BSD "/usr/bin/pxdb" | |
78 | ||
79 | #include <stdlib.h> | |
80 | #include <string.h> | |
81 | #include <unistd.h> | |
82 | ||
83 | /* check for the existance of a file, given its full pathname */ | |
84 | int | |
85 | file_exists (filename) | |
86 | char *filename; | |
87 | { | |
88 | if (filename) | |
89 | return (access (filename, F_OK) == 0); | |
90 | return 0; | |
91 | } | |
92 | ||
93 | ||
94 | /* Translate from the "hp_language" enumeration in hp-symtab.h | |
95 | used in the debug info to gdb's generic enumeration in defs.h. */ | |
96 | static enum language | |
97 | trans_lang (in_lang) | |
98 | enum hp_language in_lang; | |
99 | { | |
100 | if (in_lang == HP_LANGUAGE_C) | |
101 | return language_c; | |
102 | ||
103 | else if (in_lang == HP_LANGUAGE_CPLUSPLUS) | |
104 | return language_cplus; | |
105 | ||
106 | else if (in_lang == HP_LANGUAGE_F77) | |
107 | return language_fortran; | |
108 | ||
109 | else return language_unknown; | |
110 | } | |
111 | ||
112 | static char main_string[] = "main"; | |
113 | ||
114 | \f | |
115 | /* Call PXDB to process our file. | |
116 | ||
117 | Approach copied from DDE's "dbgk_run_pxdb". Note: we | |
118 | don't check for BSD location of pxdb, nor for existance | |
119 | of pxdb itself, etc. | |
120 | ||
121 | NOTE: uses system function and string functions directly. | |
122 | ||
123 | Return value: 1 if ok, 0 if not */ | |
124 | int | |
125 | hpread_call_pxdb (file_name) | |
126 | char *file_name; | |
127 | { | |
128 | char *p; | |
129 | int status; | |
130 | int retval; | |
131 | ||
132 | if (file_exists (PXDB_SVR4)) | |
133 | { | |
134 | p = malloc (strlen (PXDB_SVR4) + strlen (file_name) + 2); | |
135 | strcpy (p, PXDB_SVR4); | |
136 | strcat (p, " "); | |
137 | strcat (p, file_name); | |
138 | ||
139 | warning ("File not processed by pxdb--about to process now.\n"); | |
140 | status = system (p); | |
141 | ||
142 | retval = (status == 0); | |
143 | } | |
144 | else | |
145 | { | |
146 | 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); | |
147 | ||
148 | retval = 0; | |
149 | } | |
150 | return retval; | |
151 | } /* hpread_call_pxdb */ | |
152 | ||
153 | \f | |
154 | /* Return 1 if the file turns out to need pre-processing | |
155 | by PXDB, and we have thus called PXDB to do this processing | |
156 | and the file therefore needs to be re-loaded. Otherwise | |
157 | return 0. */ | |
158 | int | |
159 | hpread_pxdb_needed (sym_bfd) | |
160 | bfd *sym_bfd; | |
161 | { | |
162 | asection *pinfo_section, *debug_section, *header_section; | |
163 | unsigned int do_pxdb; | |
164 | char *buf; | |
165 | bfd_size_type header_section_size; | |
166 | ||
167 | unsigned long tmp; | |
168 | unsigned int pxdbed; | |
169 | ||
170 | header_section = bfd_get_section_by_name (sym_bfd, "$HEADER$"); | |
171 | if (!header_section) | |
172 | { | |
173 | return 0; /* No header at all, can't recover... */ | |
174 | } | |
175 | ||
176 | debug_section = bfd_get_section_by_name (sym_bfd, "$DEBUG$"); | |
177 | pinfo_section = bfd_get_section_by_name (sym_bfd, "$PINFO$"); | |
178 | ||
179 | if (pinfo_section && !debug_section) | |
180 | { | |
181 | /* Debug info with DOC, has different header format. */ | |
182 | /* this only happens if the file was pxdbed and compiled optimized | |
183 | otherwise the PINFO section is not there. */ | |
184 | header_section_size = bfd_section_size (objfile->obfd, header_section); | |
185 | ||
186 | if (header_section_size == (bfd_size_type)sizeof (DOC_info_PXDB_header)) | |
187 | { | |
188 | buf = alloca (sizeof (DOC_info_PXDB_header)); | |
189 | ||
190 | if (!bfd_get_section_contents (sym_bfd, | |
191 | header_section, | |
192 | buf, 0, | |
193 | header_section_size)) | |
194 | error ("bfd_get_section_contents\n"); | |
195 | ||
196 | tmp = bfd_get_32 (sym_bfd, (bfd_byte *)(buf + sizeof (int)*4)); | |
197 | pxdbed = (tmp >> 31) & 0x1; | |
198 | ||
199 | if (!pxdbed) error ("file debug header info invalid\n"); | |
200 | do_pxdb = 0; | |
201 | } | |
202 | ||
203 | else error ("invalid $HEADER$ size in executable \n"); | |
204 | } | |
205 | ||
206 | else { | |
207 | ||
208 | /* this can be three different cases: | |
209 | 1. pxdbed and not doc | |
210 | - DEBUG and HEADER sections are there | |
211 | - header is PXDB_header type | |
212 | - pxdbed flag is set to 1 | |
213 | ||
214 | 2. not pxdbed and doc | |
215 | - DEBUG and HEADER sections are there | |
216 | - header is DOC_info_header type | |
217 | - pxdbed flag is set to 0 | |
218 | ||
219 | 3. not pxdbed and not doc | |
220 | - DEBUG and HEADER sections are there | |
221 | - header is XDB_header type | |
222 | - pxdbed flag is set to 0 | |
223 | ||
224 | NOTE: the pxdbed flag is meaningful also in the not | |
225 | already pxdb processed version of the header, | |
226 | because in case on non-already processed by pxdb files | |
227 | that same bit in the header would be always zero. | |
228 | Why? Because the bit is the leftmost bit of a word | |
229 | which contains a 'length' which is always a positive value | |
230 | so that bit is never set to 1 (otherwise it would be negative) | |
231 | ||
232 | Given the above, we have two choices : either we ignore the | |
233 | size of the header itself and just look at the pxdbed field, | |
234 | or we check the size and then we (for safety and paranoia related | |
235 | issues) check the bit. | |
236 | The first solution is used by DDE, the second by PXDB itself. | |
237 | I am using the second one here, because I already wrote it, | |
238 | and it is the end of a long day. | |
239 | Also, using the first approach would still involve size issues | |
240 | because we need to read in the contents of the header section, and | |
241 | give the correct amount of stuff we want to read to the | |
242 | get_bfd_section_contents function. */ | |
243 | ||
244 | /* decide which case depending on the size of the header section. | |
245 | The size is as defined in hp-symtab.h */ | |
246 | ||
247 | header_section_size = bfd_section_size (objfile->obfd, header_section); | |
248 | ||
249 | if (header_section_size == (bfd_size_type)sizeof (PXDB_header)) /* pxdb and not doc*/ | |
250 | { | |
251 | ||
252 | buf = alloca (sizeof(PXDB_header)); | |
253 | if (!bfd_get_section_contents (sym_bfd, | |
254 | header_section, | |
255 | buf, 0, | |
256 | header_section_size)) | |
257 | error ("bfd_get_section_contents\n"); | |
258 | ||
259 | tmp = bfd_get_32 (sym_bfd, (bfd_byte *)(buf + sizeof(int)*3)); | |
260 | pxdbed = (tmp >> 31) & 0x1; | |
261 | ||
262 | if (pxdbed) | |
263 | do_pxdb = 0; | |
264 | else 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 | #ifdef QUICK_LOOK_UP | |
283 | ||
284 | /******************** | |
285 | * | |
286 | * This flag can be set to zero to use the old | |
287 | * style psymtab (build from a scan of the LNTT) | |
288 | * or to one to try to use the quick look-up | |
289 | * tables. | |
290 | */ | |
291 | int psym_new_style = 1; | |
292 | ||
293 | \f | |
294 | ||
295 | /* Code to handle quick lookup-tables follows */ | |
296 | ||
297 | ||
298 | /* Some useful macros */ | |
299 | #define VALID_FILE(i) ((i) < pxdb_header_p->fd_entries) | |
300 | #define VALID_MODULE(i) ((i) < pxdb_header_p->md_entries) | |
301 | #define VALID_PROC(i) ((i) < pxdb_header_p->pd_entries) | |
302 | #define VALID_CLASS(i) ((i) < pxdb_header_p->cd_entries) | |
303 | ||
304 | #define FILE_START(i) (qFD[i].adrStart) | |
305 | #define MODULE_START(i) (qMD[i].adrStart) | |
306 | #define PROC_START(i) (qPD[i].adrStart) | |
307 | ||
308 | #define FILE_END(i) (qFD[i].adrEnd) | |
309 | #define MODULE_END(i) (qMD[i].adrEnd) | |
310 | #define PROC_END(i) (qPD[i].adrEnd) | |
311 | ||
312 | #define FILE_ISYM(i) (qFD[i].isym) | |
313 | #define MODULE_ISYM(i) (qMD[i].isym) | |
314 | #define PROC_ISYM(i) (qPD[i].isym) | |
315 | ||
316 | #define VALID_CURR_FILE (curr_fd < pxdb_header_p->fd_entries) | |
317 | #define VALID_CURR_MODULE (curr_md < pxdb_header_p->md_entries) | |
318 | #define VALID_CURR_PROC (curr_pd < pxdb_header_p->pd_entries) | |
319 | #define VALID_CURR_CLASS (curr_cd < pxdb_header_p->cd_entries) | |
320 | ||
321 | #define CURR_FILE_START (qFD[curr_fd].adrStart) | |
322 | #define CURR_MODULE_START (qMD[curr_md].adrStart) | |
323 | #define CURR_PROC_START (qPD[curr_pd].adrStart) | |
324 | ||
325 | #define CURR_FILE_END (qFD[curr_fd].adrEnd) | |
326 | #define CURR_MODULE_END (qMD[curr_md].adrEnd) | |
327 | #define CURR_PROC_END (qPD[curr_pd].adrEnd) | |
328 | ||
329 | #define CURR_FILE_ISYM (qFD[curr_fd].isym) | |
330 | #define CURR_MODULE_ISYM (qMD[curr_md].isym) | |
331 | #define CURR_PROC_ISYM (qPD[curr_pd].isym) | |
332 | ||
333 | #define TELL_OBJFILE \ | |
334 | do { \ | |
335 | if( !told_objfile ) { \ | |
336 | told_objfile = 1; \ | |
337 | warning ("\nIn object file \"%s\":\n", \ | |
338 | objfile->name); \ | |
339 | } \ | |
340 | } while (0) | |
341 | ||
342 | \f | |
343 | ||
344 | /* Keeping track of the start/end symbol table (LNTT) indices of | |
345 | psymtabs created so far */ | |
346 | ||
347 | typedef struct { | |
348 | int start; | |
349 | int end; | |
350 | } pst_syms_struct; | |
351 | ||
352 | static pst_syms_struct * pst_syms_array = 0; | |
353 | ||
354 | static pst_syms_count = 0; | |
355 | static pst_syms_size = 0; | |
356 | ||
357 | /* used by the TELL_OBJFILE macro */ | |
358 | static boolean told_objfile = 0; | |
359 | ||
360 | /* Set up psymtab symbol index stuff */ | |
361 | static void | |
362 | init_pst_syms () | |
363 | { | |
364 | pst_syms_count = 0; | |
365 | pst_syms_size = 20; | |
366 | pst_syms_array = (pst_syms_struct *) xmalloc (20 * sizeof (pst_syms_struct)); | |
367 | } | |
368 | ||
369 | /* Clean up psymtab symbol index stuff */ | |
370 | static void | |
371 | clear_pst_syms () | |
372 | { | |
373 | pst_syms_count = 0; | |
374 | pst_syms_size = 0; | |
375 | free (pst_syms_array); | |
376 | pst_syms_array = 0; | |
377 | } | |
378 | ||
379 | /* Add information about latest psymtab to symbol index table */ | |
380 | static void | |
381 | record_pst_syms (start_sym, end_sym) | |
382 | int start_sym; | |
383 | int end_sym; | |
384 | { | |
385 | if (++pst_syms_count > pst_syms_size) | |
386 | { | |
387 | pst_syms_array = (pst_syms_struct *) xrealloc (pst_syms_array, | |
388 | 2 * pst_syms_size * sizeof (pst_syms_struct)); | |
389 | pst_syms_size *= 2; | |
390 | } | |
391 | pst_syms_array[pst_syms_count - 1].start = start_sym; | |
392 | pst_syms_array[pst_syms_count - 1].end = end_sym; | |
393 | } | |
394 | ||
395 | /* Find a suitable symbol table index which can serve as the upper | |
396 | bound of a psymtab that starts at INDEX | |
397 | ||
398 | This scans backwards in the psymtab symbol index table to find a | |
399 | "hole" in which the given index can fit. This is a heuristic!! | |
400 | We don't search the entire table to check for multiple holes, | |
401 | we don't care about overlaps, etc. | |
402 | ||
403 | Return 0 => not found */ | |
404 | ||
405 | static int | |
406 | find_next_pst_start (index) | |
407 | int index; | |
408 | { | |
409 | int i; | |
410 | ||
411 | for (i = pst_syms_count - 1; i >= 0; i--) | |
412 | if (pst_syms_array[i].end <= index) | |
413 | return (i == pst_syms_count - 1) ? 0 : pst_syms_array[i+1].start - 1; | |
414 | ||
415 | if (pst_syms_array[0].start > index) | |
416 | return pst_syms_array[0].start - 1; | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | \f | |
422 | ||
423 | /* Utility functions to find the ending symbol index for a psymtab */ | |
424 | ||
425 | /* Find the next file entry that begins beyond INDEX, and return | |
426 | its starting symbol index - 1. | |
427 | QFD is the file table, CURR_FD is the file entry from where to start, | |
428 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
429 | ||
430 | Return 0 => not found */ | |
431 | ||
432 | static int | |
433 | find_next_file_isym (index, qFD, curr_fd, pxdb_header_p) | |
434 | int index; | |
435 | quick_file_entry *qFD; | |
436 | int curr_fd; | |
437 | PXDB_header_ptr pxdb_header_p; | |
438 | { | |
439 | while (VALID_CURR_FILE) { | |
440 | if (CURR_FILE_ISYM >= index) | |
441 | return CURR_FILE_ISYM - 1; | |
442 | curr_fd++; | |
443 | } | |
444 | return 0; | |
445 | } | |
446 | ||
447 | /* Find the next procedure entry that begins beyond INDEX, and return | |
448 | its starting symbol index - 1. | |
449 | QPD is the procedure table, CURR_PD is the proc entry from where to start, | |
450 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
451 | ||
452 | Return 0 => not found */ | |
453 | ||
454 | static int | |
455 | find_next_proc_isym (index, qPD, curr_pd, pxdb_header_p) | |
456 | int index; | |
457 | quick_procedure_entry *qPD; | |
458 | int curr_pd; | |
459 | PXDB_header_ptr pxdb_header_p; | |
460 | { | |
461 | while (VALID_CURR_PROC) { | |
462 | if (CURR_PROC_ISYM >= index) | |
463 | return CURR_PROC_ISYM - 1; | |
464 | curr_pd++; | |
465 | } | |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* Find the next module entry that begins beyond INDEX, and return | |
470 | its starting symbol index - 1. | |
471 | QMD is the module table, CURR_MD is the modue entry from where to start, | |
472 | PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). | |
473 | ||
474 | Return 0 => not found */ | |
475 | ||
476 | static int | |
477 | find_next_module_isym (index, qMD, curr_md, pxdb_header_p) | |
478 | int index; | |
479 | quick_module_entry *qMD; | |
480 | int curr_md; | |
481 | PXDB_header_ptr pxdb_header_p; | |
482 | { | |
483 | while (VALID_CURR_MODULE) { | |
484 | if (CURR_MODULE_ISYM >= index) | |
485 | return CURR_MODULE_ISYM - 1; | |
486 | curr_md++; | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
491 | /* Scan and record partial symbols for all functions starting from index | |
492 | pointed to by CURR_PD_P, and between code addresses START_ADR and END_ADR. | |
493 | Other parameters are explained in comments below. */ | |
494 | ||
495 | /* This used to be inline in hpread_quick_traverse, but now that we do essentially the | |
496 | same thing for two different cases (modules and module-less files), it's better | |
497 | organized in a separate routine, although it does take lots of arguments. pai/1997-10-08 */ | |
498 | ||
499 | static int | |
500 | scan_procs (curr_pd_p, qPD, max_procs, start_adr, end_adr, pst, vt_bits, objfile, section_offsets) | |
501 | int * curr_pd_p; /* pointer to current proc index */ | |
502 | quick_procedure_entry * qPD; /* the procedure quick lookup table */ | |
503 | int max_procs; /* number of entries in proc. table */ | |
504 | CORE_ADDR start_adr; /* beginning of code range for current psymtab */ | |
505 | CORE_ADDR end_adr; /* end of code range for current psymtab */ | |
506 | struct partial_symtab * pst; /* current psymtab */ | |
507 | char * vt_bits; /* strings table of SOM debug space */ | |
508 | struct objfile * objfile; /* current object file */ | |
509 | struct section_offsets * section_offsets; /* not really used for HP-UX currently */ | |
510 | { | |
511 | union dnttentry *dn_bufp; | |
512 | int symbol_count = 0; /* Total number of symbols in this psymtab */ | |
513 | int curr_pd = *curr_pd_p; /* Convenience variable -- avoid dereferencing pointer all the time */ | |
514 | ||
515 | #ifdef DUMPING | |
516 | /* Turn this on for lots of debugging information in this routine */ | |
517 | static int dumping = 0; | |
518 | #endif | |
519 | ||
520 | #ifdef DUMPING | |
521 | if (dumping) { | |
522 | printf ("Scan_procs called, addresses %x to %x, proc %x\n", start_adr, end_adr, curr_pd); | |
523 | } | |
524 | #endif | |
525 | ||
526 | while((CURR_PROC_START <= end_adr) && (curr_pd < max_procs)) { | |
527 | ||
528 | char *rtn_name; /* mangled name */ | |
529 | char *rtn_dem_name; /* qualified demangled name */ | |
530 | char *class_name; | |
531 | int class; | |
532 | ||
533 | if ((trans_lang ((enum hp_language) qPD[curr_pd].language) == language_cplus) && | |
534 | vt_bits[ (long) qPD[curr_pd].sbAlias]) /* not a null string */ | |
535 | { | |
536 | /* Get mangled name for the procedure, and demangle it */ | |
537 | rtn_name = &vt_bits[ (long)qPD[curr_pd].sbAlias ]; | |
538 | rtn_dem_name = cplus_demangle (rtn_name, DMGL_ANSI | DMGL_PARAMS); | |
539 | } | |
540 | else | |
541 | { | |
542 | rtn_name = &vt_bits[ (long)qPD[curr_pd].sbProc ]; | |
543 | rtn_dem_name = NULL; | |
544 | } | |
545 | ||
546 | /* Hack to get around HP C/C++ compilers' insistence on providing | |
547 | * "_MAIN_" as an alternate name for "main" */ | |
548 | if ((strcmp (rtn_name, "_MAIN_") == 0) && | |
549 | (strcmp (&vt_bits[ (long)qPD[curr_pd].sbProc ], "main") == 0)) | |
550 | rtn_dem_name = rtn_name = main_string; | |
551 | ||
552 | #ifdef DUMPING | |
553 | if( dumping ) { | |
554 | printf( "..add %s (demangled %s), index %x to this psymtab\n", rtn_name, rtn_dem_name, curr_pd); | |
555 | } | |
556 | #endif | |
557 | ||
558 | /* Check for module-spanning routines. | |
559 | */ | |
560 | if(CURR_PROC_END > end_adr ) { | |
561 | TELL_OBJFILE; | |
562 | warning ("Procedure \"%s\" [0x%x] spans file or module boundaries.", rtn_name, curr_pd); | |
563 | } | |
564 | ||
565 | /* I asked for this in the hope it would fix bug CHFts22228, but | |
566 | * later decided it's not the right fix. I'm leaving the code | |
567 | * commented out for now in case we decide we actually want to do this. | |
568 | * - RT | |
569 | */ | |
570 | #if 0 | |
571 | /* Check this routine--if it's a class member function, | |
572 | * add the class to the psymtab. We only need to add | |
573 | * the class once in each module, so check. | |
574 | */ | |
575 | if( qPD[curr_pd].member ) { | |
576 | ||
577 | class = qPD[curr_pd].icd; | |
578 | if( ! B_TST( class_entered, class)) { /* pai: (temp) class_entered not a parameter */ | |
579 | ||
580 | class_name = &vt_bits[ (long)qCD[class].sbClass ]; | |
581 | ||
582 | /* Add to both the struct and var namespace */ | |
583 | ||
584 | add_psymbol_to_list ( | |
585 | class_name, | |
586 | strlen( class_name ), | |
587 | STRUCT_NAMESPACE, | |
588 | LOC_UNDEF, /* "I have no storage" */ | |
589 | &objfile->global_psymbols, /* assume classname is global */ | |
590 | 0, 0, | |
591 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
592 | objfile ); | |
593 | ||
594 | add_psymbol_to_list ( | |
595 | class_name, | |
596 | strlen( class_name ), | |
597 | VAR_NAMESPACE, | |
598 | LOC_UNDEF, /* "I have no storage" */ | |
599 | &objfile->global_psymbols, /* assume classname is global */ | |
600 | 0, 0, | |
601 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
602 | objfile ); | |
603 | ||
604 | B_SET( class_entered, class ); /* pai: (temp) class_entered not a parameter */ | |
605 | symbol_count++; | |
606 | } | |
607 | } | |
608 | #endif | |
609 | ||
610 | /* Add this routine symbol to the list in the objfile. */ | |
611 | /* Unfortunately we have to go to the LNTT to determine the | |
612 | * correct list to put it on. An alternative (which the | |
613 | * code used to do) would be to not check and always throw | |
614 | * it on the "static" list. But if we go that route, then | |
615 | * symbol_lookup() needs to be tweaked a bit to account | |
616 | * for the fact that the function might not be found on | |
617 | * the correct list in the psymtab. - RT | |
618 | */ | |
619 | dn_bufp = hpread_get_lntt (qPD[curr_pd].isym, objfile); | |
620 | if (dn_bufp->dfunc.global) | |
621 | add_psymbol_with_dem_name_to_list ( | |
622 | rtn_name, | |
623 | strlen( rtn_name ), | |
624 | rtn_dem_name, | |
625 | strlen( rtn_dem_name ), | |
626 | VAR_NAMESPACE, | |
627 | LOC_BLOCK, /* "I am a routine" */ | |
628 | &objfile->global_psymbols, | |
629 | ( qPD[curr_pd].adrStart + /* Starting address of rtn */ | |
630 | ANOFFSET (section_offsets, SECT_OFF_TEXT)), | |
631 | 0, /* core addr?? */ | |
632 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
633 | objfile ); | |
634 | else | |
635 | add_psymbol_with_dem_name_to_list ( | |
636 | rtn_name, | |
637 | strlen( rtn_name ), | |
638 | rtn_dem_name, | |
639 | strlen( rtn_dem_name ), | |
640 | VAR_NAMESPACE, | |
641 | LOC_BLOCK, /* "I am a routine" */ | |
642 | &objfile->static_psymbols, | |
643 | ( qPD[curr_pd].adrStart + /* Starting address of rtn */ | |
644 | ANOFFSET (section_offsets, SECT_OFF_TEXT)), | |
645 | 0, /* core addr?? */ | |
646 | trans_lang ((enum hp_language) qPD[curr_pd].language), | |
647 | objfile ); | |
648 | ||
649 | symbol_count++; | |
650 | *curr_pd_p = ++curr_pd; /* bump up count & reflect in caller */ | |
651 | } /* loop over procedures */ | |
652 | ||
653 | #ifdef DUMPING | |
654 | if( dumping ) { | |
655 | if( symbol_count == 0 ) | |
656 | printf( "Scan_procs: no symbols found!\n"); | |
657 | } | |
658 | #endif | |
659 | ||
660 | return symbol_count; | |
661 | } | |
662 | ||
663 | ||
664 | /* Traverse the quick look-up tables, building a set of psymtabs. | |
665 | * | |
666 | * This constructs a psymtab for modules and files in the quick lookup | |
667 | * tables. | |
668 | * | |
669 | * Mostly, modules correspond to compilation units, so we try to | |
670 | * create psymtabs that correspond to modules; however, in some cases | |
671 | * a file can result in a compiled object which does not have a module | |
672 | * entry for it, so in such cases we create a psymtab for the file. | |
673 | */ | |
674 | ||
675 | int | |
676 | hpread_quick_traverse( | |
677 | objfile, /* The object file descriptor */ | |
678 | section_offsets, /* ?? Null for HP */ | |
679 | gntt_bits, /* GNTT entries, loaded in from the file */ | |
680 | vt_bits, /* VT (string) entries ditto. */ | |
681 | pxdb_header_p ) /* Pointer to pxdb header ditto */ | |
682 | ||
683 | struct objfile *objfile; | |
684 | struct section_offsets *section_offsets; | |
685 | char *gntt_bits; | |
686 | char *vt_bits; | |
687 | PXDB_header_ptr pxdb_header_p; | |
688 | { | |
689 | struct partial_symtab *pst; | |
690 | ||
691 | char *addr; | |
692 | ||
693 | quick_procedure_entry *qPD; | |
694 | quick_file_entry *qFD; | |
695 | quick_module_entry *qMD; | |
696 | quick_class_entry *qCD; | |
697 | ||
698 | int idx; | |
699 | int i; | |
700 | CORE_ADDR start_adr; /* current psymtab's starting code addr */ | |
701 | CORE_ADDR end_adr; /* current psymtab's ending code addr */ | |
702 | CORE_ADDR next_mod_adr; /* next module's starting code addr */ | |
703 | int curr_pd; /* current procedure */ | |
704 | int curr_fd; /* current file */ | |
705 | int curr_md; /* current module */ | |
706 | int start_sym; /* current psymtab's starting symbol index */ | |
707 | int end_sym; /* current psymtab's ending symbol index */ | |
708 | int max_LNTT_sym_index; | |
709 | int syms_in_pst; | |
710 | B_TYPE *class_entered; | |
711 | ||
712 | struct partial_symbol **global_syms; /* We'll be filling in the "global" */ | |
713 | struct partial_symbol **static_syms; /* and "static" tables in the objfile */ | |
714 | /* as we go, so we need a pair of */ | |
715 | /* current pointers. */ | |
716 | ||
717 | #ifdef DUMPING | |
718 | /* Turn this on for lots of debugging information in this routine. | |
719 | You get a blow-by-blow account of quick lookup table reading */ | |
720 | static int dumping = 0; | |
721 | #endif | |
722 | ||
723 | pst = (struct partial_symtab *) 0; | |
724 | ||
725 | /* Clear out some globals */ | |
726 | init_pst_syms (); | |
727 | told_objfile = 0; | |
728 | ||
729 | /* Demangling style -- if EDG style already set, don't change it, | |
730 | as HP style causes some problems with the KAI EDG compiler */ | |
731 | if (current_demangling_style != edg_demangling) { | |
732 | /* Otherwise, ensure that we are using HP style demangling */ | |
733 | set_demangling_style (HP_DEMANGLING_STYLE_STRING); | |
734 | } | |
735 | ||
736 | /* First we need to find the starting points of the quick | |
737 | * look-up tables in the GNTT. */ | |
738 | ||
739 | addr = gntt_bits; | |
740 | ||
741 | qPD = (quick_procedure_entry_ptr) addr; | |
742 | addr += pxdb_header_p->pd_entries * sizeof( quick_procedure_entry ); | |
743 | ||
744 | #ifdef DUMPING | |
745 | if( dumping ) { | |
746 | printf( "\n Printing routines as we see them\n" ); | |
747 | for( i = 0; VALID_PROC (i); i++ ){ | |
748 | idx = (long) qPD[i].sbProc; | |
749 | printf( "%s %x..%x\n", &vt_bits[idx], | |
750 | (int) PROC_START (i), | |
751 | (int) PROC_END (i) ); | |
752 | } | |
753 | } | |
754 | #endif | |
755 | ||
756 | qFD = (quick_file_entry_ptr) addr; | |
757 | addr += pxdb_header_p->fd_entries * sizeof( quick_file_entry); | |
758 | ||
759 | #ifdef DUMPING | |
760 | if( dumping ) { | |
761 | printf( "\n Printing files as we see them\n" ); | |
762 | for( i = 0; VALID_FILE (i); i++ ){ | |
763 | idx = (long) qFD[i].sbFile; | |
764 | printf( "%s %x..%x\n", &vt_bits[idx], | |
765 | (int) FILE_START(i), | |
766 | (int) FILE_END(i) ); | |
767 | } | |
768 | } | |
769 | #endif | |
770 | ||
771 | qMD = (quick_module_entry_ptr) addr; | |
772 | addr += pxdb_header_p->md_entries * sizeof( quick_module_entry ); | |
773 | ||
774 | #ifdef DUMPING | |
775 | if( dumping ) { | |
776 | printf( "\n Printing modules as we see them\n" ); | |
777 | for( i = 0; i < pxdb_header_p->md_entries; i++ ){ | |
778 | idx = (long) qMD[i].sbMod; | |
779 | printf( "%s\n", &vt_bits[idx] ); | |
780 | } | |
781 | } | |
782 | #endif | |
783 | ||
784 | qCD = (quick_class_entry_ptr) addr; | |
785 | addr += pxdb_header_p->cd_entries * sizeof( quick_class_entry ); | |
786 | ||
787 | #ifdef DUMPING | |
788 | if( dumping ) { | |
789 | printf( "\n Printing classes as we see them\n" ); | |
790 | for( i = 0; VALID_CLASS (i); i++ ){ | |
791 | idx = (long) qCD[i].sbClass; | |
792 | printf( "%s\n", &vt_bits[idx] ); | |
793 | } | |
794 | ||
795 | printf( "\n Done with dump, on to build!\n" ); | |
796 | } | |
797 | #endif | |
798 | ||
799 | /* We need this index only while hp-symtab-read.c expects | |
800 | * a byte offset to the end of the LNTT entries for a given | |
801 | * psymtab. Thus the need for it should go away someday. | |
802 | * | |
803 | * When it goes away, then we won't have any need to load the | |
804 | * LNTT from the objfile at psymtab-time, and start-up will be | |
805 | * faster. To make that work, we'll need some way to create | |
806 | * a null pst for the "globals" pseudo-module. | |
807 | */ | |
808 | max_LNTT_sym_index = LNTT_SYMCOUNT (objfile); | |
809 | ||
810 | /* Scan the module descriptors and make a psymtab for each. | |
811 | * | |
812 | * We know the MDs, FDs and the PDs are in order by starting | |
813 | * address. We use that fact to traverse all three arrays in | |
814 | * parallel, knowing when the next PD is in a new file | |
815 | * and we need to create a new psymtab. | |
816 | */ | |
817 | curr_pd = 0; /* Current procedure entry */ | |
818 | curr_fd = 0; /* Current file entry */ | |
819 | curr_md = 0; /* Current module entry */ | |
820 | ||
821 | start_adr = 0; /* Current psymtab code range */ | |
822 | end_adr = 0; | |
823 | ||
824 | start_sym = 0; /* Current psymtab symbol range */ | |
825 | end_sym = 0; | |
826 | ||
827 | syms_in_pst = 0; /* Symbol count for psymtab */ | |
828 | ||
829 | /* Psts actually just have pointers into the objfile's | |
830 | * symbol table, not their own symbol tables. | |
831 | */ | |
832 | global_syms = objfile -> global_psymbols.list; | |
833 | static_syms = objfile -> static_psymbols.list; | |
834 | ||
835 | #if 0 /* pai: (temp) we don't need this any more */ | |
836 | /* elz: if the first module we see in the table is for | |
837 | end.c, then return immediately with false. This happens | |
838 | for F77 programs, for which there is no MODULE information | |
839 | produced in the debug info. | |
840 | Returning false from this function will make the caller | |
841 | (build_psymbols) scan the table from the beginning and | |
842 | not use the quick lookup tables. | |
843 | F90 has modules so this poses no porblem. | |
844 | */ | |
845 | if (!strcmp (&vt_bits[(long)qMD[0].sbMod], "end.c")) | |
846 | return 0; | |
847 | #endif | |
848 | ||
849 | /* First skip over pseudo-entries with address 0. These represent inlined | |
850 | routines and abstract (uninstantiated) template routines. | |
851 | FIXME: These should be read in and available -- even if we can't set | |
852 | breakpoints, etc., there's some information that can be presented | |
853 | to the user. pai/1997-10-08 */ | |
854 | ||
855 | while (VALID_CURR_PROC && (CURR_PROC_START == 0)) | |
856 | curr_pd++; | |
857 | ||
858 | /* Loop over files, modules, and procedures in code address order. Each | |
859 | time we enter an iteration of this loop, curr_pd points to the first | |
860 | unprocessed procedure, curr_fd points to the first unprocessed file, and | |
861 | curr_md to the first unprocessed module. Each iteration of this loop | |
862 | updates these as required -- any or all of them may be bumpd up | |
863 | each time around. When we exit this loop, we are done with all files | |
864 | and modules in the tables -- there may still be some procedures, however. | |
865 | ||
866 | Note: This code used to loop only over module entries, under the assumption | |
867 | that files can occur via inclusions and are thus unreliable, while a | |
868 | compiled object always corresponds to a module. With CTTI in the HP aCC | |
869 | compiler, it turns out that compiled objects may have only files and no | |
870 | modules; so we have to loop over files and modules, creating psymtabs for | |
871 | either as appropriate. Unfortunately there are some problems (notably: | |
872 | 1. the lack of "SRC_FILE_END" entries in the LNTT, 2. the lack of pointers | |
873 | to the ending symbol indices of a module or a file) which make it quite hard | |
874 | to do this correctly. Currently it uses a bunch of heuristics to start and | |
875 | end psymtabs; they seem to work well with most objects generated by aCC, but | |
876 | who knows when that will change... */ | |
877 | ||
878 | while (VALID_CURR_FILE || VALID_CURR_MODULE) { | |
879 | ||
880 | char *mod_name_string; | |
881 | char *full_name_string; | |
882 | ||
883 | /* First check for modules like "version.c", which have no code | |
884 | * in them but still have qMD entries. They also have no qFD or | |
885 | * qPD entries. Their start address is -1 and their end address | |
886 | * is 0. */ | |
887 | if(VALID_CURR_MODULE && (CURR_MODULE_START == -1) && (CURR_MODULE_END == NULL)) { | |
888 | ||
889 | mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; | |
890 | ||
891 | #ifdef DUMPING | |
892 | if( dumping ) | |
893 | printf( "Module with data only %s\n", mod_name_string ); | |
894 | #endif | |
895 | ||
896 | /* We'll skip the rest (it makes error-checking easier), and | |
897 | * just make an empty pst. Right now empty psts are not put | |
898 | * in the pst chain, so all this is for naught, but later it | |
899 | * might help. */ | |
900 | ||
901 | pst = hpread_start_psymtab( objfile, | |
902 | section_offsets, /* ?? */ | |
903 | mod_name_string, | |
904 | CURR_MODULE_START, /* Low text address: bogus! */ | |
905 | (CURR_MODULE_ISYM * sizeof (struct dntt_type_block)), | |
906 | /* ldsymoff */ | |
907 | global_syms, | |
908 | static_syms ); | |
909 | ||
910 | pst = hpread_end_psymtab ( | |
911 | pst, | |
912 | NULL, /* psymtab_include_list */ | |
913 | 0, /* includes_used */ | |
914 | end_sym * sizeof (struct dntt_type_block), | |
915 | /* byte index in LNTT of end */ | |
916 | /* = capping symbol offset */ | |
917 | /* = LDSYMOFF of nextfile */ | |
918 | NULL, /* text high */ | |
919 | NULL, /* dependency_list */ | |
920 | 0 ); /* dependencies_used */ | |
921 | ||
922 | global_syms = objfile->global_psymbols.next; | |
923 | static_syms = objfile->static_psymbols.next; | |
924 | ||
925 | curr_md++; | |
926 | } | |
927 | else if (VALID_CURR_MODULE && | |
928 | ((CURR_MODULE_START == 0) || (CURR_MODULE_START == -1) || | |
929 | (CURR_MODULE_END == 0) || (CURR_MODULE_END == -1))) { | |
930 | TELL_OBJFILE; | |
931 | warning ("Module \"%s\" [0x%x] has non-standard addresses. It starts at 0x%x, ends at 0x%x, and will be skipped.", | |
932 | mod_name_string, curr_md, start_adr, end_adr); | |
933 | /* On to next module */ | |
934 | curr_md ++; | |
935 | } | |
936 | else { | |
937 | /* First check if we are looking at a file with code in it | |
938 | that does not overlap the current module's code range */ | |
939 | ||
940 | if (VALID_CURR_FILE ? (VALID_CURR_MODULE ? (CURR_FILE_END < CURR_MODULE_START) : 1) : 0) { | |
941 | ||
942 | /* Looking at file not corresponding to any module, | |
943 | create a psymtab for it */ | |
944 | full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile]; | |
945 | start_adr = CURR_FILE_START; | |
946 | end_adr = CURR_FILE_END; | |
947 | start_sym = CURR_FILE_ISYM; | |
948 | ||
949 | /* Check if there are any procedures not handled until now, that | |
950 | begin before the start address of this file, and if so, adjust | |
951 | this module's start address to include them. This handles routines that | |
952 | are in between file or module ranges for some reason (probably | |
953 | indicates a compiler bug */ | |
954 | ||
955 | if (CURR_PROC_START < start_adr) { | |
956 | TELL_OBJFILE; | |
957 | warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", | |
958 | &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); | |
959 | start_adr = CURR_PROC_START; | |
960 | if (CURR_PROC_ISYM < start_sym) | |
961 | start_sym = CURR_PROC_ISYM; | |
962 | } | |
963 | ||
964 | /* Sometimes (compiler bug -- COBOL) the module end address is higher | |
965 | than the start address of the next module, so check for that and | |
966 | adjust accordingly */ | |
967 | ||
968 | if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) { | |
969 | TELL_OBJFILE; | |
970 | warning("File \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", | |
971 | full_name_string, curr_fd); | |
972 | end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
973 | } | |
974 | if (VALID_MODULE (curr_md) && (CURR_MODULE_START <= end_adr)) { | |
975 | TELL_OBJFILE; | |
976 | warning("File \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", | |
977 | full_name_string, curr_fd); | |
978 | end_adr = CURR_MODULE_START - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
979 | } | |
980 | ||
981 | ||
982 | #ifdef DUMPING | |
983 | if( dumping ) { | |
984 | printf( "Make new psymtab for file %s (%x to %x).\n", | |
985 | full_name_string, start_adr, end_adr ); | |
986 | } | |
987 | #endif | |
988 | /* Create the basic psymtab, connecting it in the list | |
989 | * for this objfile and pointing its symbol entries | |
990 | * to the current end of the symbol areas in the objfile. | |
991 | * | |
992 | * The "ldsymoff" parameter is the byte offset in the LNTT | |
993 | * of the first symbol in this file. Some day we should | |
994 | * turn this into an index (fix in hp-symtab-read.c as well). | |
995 | * And it's not even the right byte offset, as we're using | |
996 | * the size of a union! FIXME! */ | |
997 | pst = hpread_start_psymtab( objfile, | |
998 | section_offsets, /* ?? */ | |
999 | full_name_string, | |
1000 | start_adr, /* Low text address */ | |
1001 | (start_sym * sizeof (struct dntt_type_block)), | |
1002 | /* ldsymoff */ | |
1003 | global_syms, | |
1004 | static_syms ); | |
1005 | ||
1006 | /* Set up to only enter each class referenced in this module once. */ | |
1007 | class_entered = malloc( B_BYTES( pxdb_header_p->cd_entries )); | |
1008 | B_CLRALL( class_entered, pxdb_header_p->cd_entries ); | |
1009 | ||
1010 | /* Scan the procedure descriptors for procedures in the current | |
1011 | * file, based on the starting addresses. */ | |
1012 | ||
1013 | syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
1014 | start_adr, end_adr, | |
1015 | pst, vt_bits, objfile, section_offsets); | |
1016 | ||
1017 | /* Get ending symbol offset */ | |
1018 | ||
1019 | end_sym = 0; | |
1020 | /* First check for starting index before previous psymtab */ | |
1021 | if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) { | |
1022 | end_sym = find_next_pst_start (start_sym); | |
1023 | } | |
1024 | /* Look for next start index of a file or module, or procedure */ | |
1025 | if (!end_sym) { | |
1026 | int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); | |
1027 | int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md, pxdb_header_p); | |
1028 | int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); | |
1029 | ||
1030 | if (next_file_isym && next_module_isym) { | |
1031 | /* pick lower of next file or module start index */ | |
1032 | end_sym = min (next_file_isym, next_module_isym); | |
1033 | } | |
1034 | else { | |
1035 | /* one of them is zero, pick the other */ | |
1036 | end_sym = max (next_file_isym, next_module_isym); | |
1037 | } | |
1038 | ||
1039 | /* As a precaution, check next procedure index too */ | |
1040 | if (!end_sym) | |
1041 | end_sym = next_proc_isym; | |
1042 | else | |
1043 | end_sym = min (end_sym, next_proc_isym); | |
1044 | } | |
1045 | ||
1046 | /* Couldn't find procedure, file, or module, use globals as default */ | |
1047 | if (!end_sym) | |
1048 | end_sym = pxdb_header_p->globals; | |
1049 | ||
1050 | #ifdef DUMPING | |
1051 | if (dumping) { | |
1052 | printf ("File psymtab indices: %x to %x\n", start_sym, end_sym); | |
1053 | } | |
1054 | #endif | |
1055 | ||
1056 | pst = hpread_end_psymtab ( | |
1057 | pst, | |
1058 | NULL, /* psymtab_include_list */ | |
1059 | 0, /* includes_used */ | |
1060 | end_sym * sizeof (struct dntt_type_block), | |
1061 | /* byte index in LNTT of end */ | |
1062 | /* = capping symbol offset */ | |
1063 | /* = LDSYMOFF of nextfile */ | |
1064 | end_adr, /* text high */ | |
1065 | NULL, /* dependency_list */ | |
1066 | 0 ); /* dependencies_used */ | |
1067 | ||
1068 | record_pst_syms (start_sym, end_sym); | |
1069 | ||
1070 | if( NULL == pst ) | |
1071 | warning ("No symbols in psymtab for file \"%s\" [0x%x].", full_name_string, curr_fd); | |
1072 | ||
1073 | #ifdef DUMPING | |
1074 | if( dumping ) { | |
1075 | printf( "Made new psymtab for file %s (%x to %x), sym %x to %x.\n", | |
1076 | full_name_string, start_adr, end_adr, CURR_FILE_ISYM, end_sym); | |
1077 | } | |
1078 | #endif | |
1079 | /* Prepare for the next psymtab. | |
1080 | */ | |
1081 | global_syms = objfile->global_psymbols.next; | |
1082 | static_syms = objfile->static_psymbols.next; | |
1083 | free( class_entered ); | |
1084 | ||
1085 | curr_fd++; | |
1086 | } /* Psymtab for file */ | |
1087 | else { | |
1088 | /* We have a module for which we create a psymtab */ | |
1089 | ||
1090 | mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; | |
1091 | ||
1092 | /* We will include the code ranges of any files that happen to | |
1093 | overlap with this module */ | |
1094 | ||
1095 | /* So, first pick the lower of the file's and module's start addresses */ | |
1096 | start_adr = CURR_MODULE_START; | |
1097 | if (VALID_CURR_FILE) { | |
1098 | if (CURR_FILE_START < CURR_MODULE_START) { | |
1099 | TELL_OBJFILE; | |
1100 | warning ("File \"%s\" [0x%x] crosses beginning of module \"%s\".", | |
1101 | &vt_bits[ (long) qFD[curr_fd].sbFile], | |
1102 | curr_fd, mod_name_string); | |
1103 | ||
1104 | start_adr = CURR_FILE_START; | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | /* Also pick the lower of the file's and the module's start symbol indices */ | |
1109 | start_sym = CURR_MODULE_ISYM; | |
1110 | if (VALID_CURR_FILE && (CURR_FILE_ISYM < CURR_MODULE_ISYM)) | |
1111 | start_sym = CURR_FILE_ISYM; | |
1112 | ||
1113 | /* For the end address, we scan through the files till we find one | |
1114 | that overlaps the current module but ends beyond it; if no such file exists we | |
1115 | simply use the module's start address. (Note, if file entries themselves overlap | |
1116 | we take the longest overlapping extension beyond the end of the module...) | |
1117 | We assume that modules never overlap. */ | |
1118 | ||
1119 | end_adr = CURR_MODULE_END; | |
1120 | ||
1121 | if (VALID_CURR_FILE) { | |
1122 | while (VALID_CURR_FILE && (CURR_FILE_START < end_adr)) { | |
1123 | ||
1124 | #ifdef DUMPING | |
1125 | if( dumping ) | |
1126 | printf( "Maybe skipping file %s which overlaps with module %s\n", | |
1127 | &vt_bits[ (long) qFD[ curr_fd ].sbFile], mod_name_string ); | |
1128 | #endif | |
1129 | if (CURR_FILE_END > end_adr) { | |
1130 | TELL_OBJFILE; | |
1131 | warning ("File \"%s\" [0x%x] crosses end of module \"%s\".", | |
1132 | &vt_bits[ (long) qFD[curr_fd].sbFile], | |
1133 | curr_fd, mod_name_string); | |
1134 | end_adr = CURR_FILE_END; | |
1135 | } | |
1136 | curr_fd++; | |
1137 | } | |
1138 | curr_fd--; /* back up after going too far */ | |
1139 | } | |
1140 | ||
1141 | /* Sometimes (compiler bug -- COBOL) the module end address is higher | |
1142 | than the start address of the next module, so check for that and | |
1143 | adjust accordingly */ | |
1144 | ||
1145 | if (VALID_MODULE (curr_md + 1) && (MODULE_START (curr_md + 1) <= end_adr)) { | |
1146 | TELL_OBJFILE; | |
1147 | warning ("Module \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", | |
1148 | mod_name_string, curr_md); | |
1149 | end_adr = MODULE_START (curr_md + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
1150 | } | |
1151 | if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) { | |
1152 | TELL_OBJFILE; | |
1153 | warning ("Module \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", | |
1154 | mod_name_string, curr_md); | |
1155 | end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ | |
1156 | } | |
1157 | ||
1158 | /* Use one file to get the full name for the module. This | |
1159 | * situation can arise if there is executable code in a #include | |
1160 | * file. Each file with code in it gets a qFD. Files which don't | |
1161 | * contribute code don't get a qFD, even if they include files | |
1162 | * which do, e.g.: | |
1163 | * | |
1164 | * body.c: rtn.h: | |
1165 | * int x; int main() { | |
1166 | * #include "rtn.h" return x; | |
1167 | * } | |
1168 | * | |
1169 | * There will a qFD for "rtn.h",and a qMD for "body.c", | |
1170 | * but no qMD for "rtn.h" or qFD for "body.c"! | |
1171 | * | |
1172 | * We pick the name of the last file to overlap with this | |
1173 | * module. C convention is to put include files first. In a | |
1174 | * perfect world, we could check names and use the file whose full | |
1175 | * path name ends with the module name. */ | |
1176 | ||
1177 | if (VALID_CURR_FILE) | |
1178 | full_name_string = &vt_bits[ (long) qFD[curr_fd].sbFile ]; | |
1179 | else | |
1180 | full_name_string = mod_name_string; | |
1181 | ||
1182 | /* Check if there are any procedures not handled until now, that | |
1183 | begin before the start address we have now, and if so, adjust | |
1184 | this psymtab's start address to include them. This handles routines that | |
1185 | are in between file or module ranges for some reason (probably | |
1186 | indicates a compiler bug */ | |
1187 | ||
1188 | if (CURR_PROC_START < start_adr) { | |
1189 | TELL_OBJFILE; | |
1190 | warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", | |
1191 | &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); | |
1192 | start_adr = CURR_PROC_START; | |
1193 | if (CURR_PROC_ISYM < start_sym) | |
1194 | start_sym = CURR_PROC_ISYM; | |
1195 | } | |
1196 | ||
1197 | #ifdef DUMPING | |
1198 | if( dumping ) { | |
1199 | printf( "Make new psymtab for module %s (%x to %x), using file %s\n", | |
1200 | mod_name_string, start_adr, end_adr, full_name_string); | |
1201 | } | |
1202 | #endif | |
1203 | /* Create the basic psymtab, connecting it in the list | |
1204 | * for this objfile and pointing its symbol entries | |
1205 | * to the current end of the symbol areas in the objfile. | |
1206 | * | |
1207 | * The "ldsymoff" parameter is the byte offset in the LNTT | |
1208 | * of the first symbol in this file. Some day we should | |
1209 | * turn this into an index (fix in hp-symtab-read.c as well). | |
1210 | * And it's not even the right byte offset, as we're using | |
1211 | * the size of a union! FIXME! */ | |
1212 | pst = hpread_start_psymtab( objfile, | |
1213 | section_offsets, /* ?? */ | |
1214 | full_name_string, | |
1215 | start_adr, /* Low text address */ | |
1216 | (start_sym * sizeof (struct dntt_type_block)), | |
1217 | /* ldsymoff */ | |
1218 | global_syms, | |
1219 | static_syms ); | |
1220 | ||
1221 | /* Set up to only enter each class referenced in this module once. */ | |
1222 | class_entered = malloc( B_BYTES( pxdb_header_p->cd_entries )); | |
1223 | B_CLRALL( class_entered, pxdb_header_p->cd_entries ); | |
1224 | ||
1225 | /* Scan the procedure descriptors for procedures in the current | |
1226 | * module, based on the starting addresses. */ | |
1227 | ||
1228 | syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
1229 | start_adr, end_adr, | |
1230 | pst, vt_bits, objfile, section_offsets); | |
1231 | ||
1232 | /* Get ending symbol offset */ | |
1233 | ||
1234 | end_sym = 0; | |
1235 | /* First check for starting index before previous psymtab */ | |
1236 | if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) { | |
1237 | end_sym = find_next_pst_start (start_sym); | |
1238 | } | |
1239 | /* Look for next start index of a file or module, or procedure */ | |
1240 | if (!end_sym) { | |
1241 | int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); | |
1242 | int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md + 1, pxdb_header_p); | |
1243 | int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); | |
1244 | ||
1245 | if (next_file_isym && next_module_isym) { | |
1246 | /* pick lower of next file or module start index */ | |
1247 | end_sym = min (next_file_isym, next_module_isym); | |
1248 | } | |
1249 | else { | |
1250 | /* one of them is zero, pick the other */ | |
1251 | end_sym = max (next_file_isym, next_module_isym); | |
1252 | } | |
1253 | ||
1254 | /* As a precaution, check next procedure index too */ | |
1255 | if (!end_sym) | |
1256 | end_sym = next_proc_isym; | |
1257 | else | |
1258 | end_sym = min (end_sym, next_proc_isym); | |
1259 | } | |
1260 | ||
1261 | /* Couldn't find procedure, file, or module, use globals as default */ | |
1262 | if (!end_sym) | |
1263 | end_sym = pxdb_header_p->globals; | |
1264 | ||
1265 | #ifdef DUMPING | |
1266 | if (dumping) { | |
1267 | printf ("Module psymtab indices: %x to %x\n", start_sym, end_sym); | |
1268 | } | |
1269 | #endif | |
1270 | ||
1271 | pst = hpread_end_psymtab ( | |
1272 | pst, | |
1273 | NULL, /* psymtab_include_list */ | |
1274 | 0, /* includes_used */ | |
1275 | end_sym * sizeof (struct dntt_type_block), | |
1276 | /* byte index in LNTT of end */ | |
1277 | /* = capping symbol offset */ | |
1278 | /* = LDSYMOFF of nextfile */ | |
1279 | end_adr, /* text high */ | |
1280 | NULL, /* dependency_list */ | |
1281 | 0 ); /* dependencies_used */ | |
1282 | ||
1283 | record_pst_syms (start_sym, end_sym); | |
1284 | ||
1285 | if( NULL == pst ) | |
1286 | warning ("No symbols in psymtab for module \"%s\" [0x%x].", mod_name_string, curr_md); | |
1287 | ||
1288 | #ifdef DUMPING | |
1289 | if( dumping ) { | |
1290 | printf( "Made new psymtab for module %s (%x to %x), sym %x to %x.\n", | |
1291 | mod_name_string, start_adr, end_adr, CURR_MODULE_ISYM, end_sym); | |
1292 | } | |
1293 | #endif | |
1294 | ||
1295 | /* Prepare for the next psymtab. | |
1296 | */ | |
1297 | global_syms = objfile->global_psymbols.next; | |
1298 | static_syms = objfile->static_psymbols.next; | |
1299 | free( class_entered ); | |
1300 | ||
1301 | curr_md++; | |
1302 | curr_fd++; | |
1303 | } /* psymtab for module */ | |
1304 | } /* psymtab for non-bogus file or module */ | |
1305 | } /* End of while loop over all files & modules */ | |
1306 | ||
1307 | /* There may be some routines after all files and modules -- these will get | |
1308 | inserted in a separate new module of their own */ | |
1309 | if (VALID_CURR_PROC) { | |
1310 | start_adr = CURR_PROC_START; | |
1311 | end_adr = qPD[pxdb_header_p->pd_entries -1].adrEnd; | |
1312 | TELL_OBJFILE; | |
1313 | warning ("Found functions beyond end of all files and modules [0x%x].", curr_pd); | |
1314 | #ifdef DUMPING | |
1315 | if( dumping ) { | |
1316 | printf( "Orphan functions at end, PD %d and beyond (%x to %x)\n", | |
1317 | curr_pd, start_adr, end_adr); | |
1318 | } | |
1319 | #endif | |
1320 | pst = hpread_start_psymtab( objfile, | |
1321 | section_offsets, /* ?? */ | |
1322 | "orphans", | |
1323 | start_adr, /* Low text address */ | |
1324 | (CURR_PROC_ISYM * sizeof (struct dntt_type_block)), | |
1325 | /* ldsymoff */ | |
1326 | global_syms, | |
1327 | static_syms ); | |
1328 | ||
1329 | scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, | |
1330 | start_adr, end_adr, | |
1331 | pst, vt_bits, objfile, section_offsets); | |
1332 | ||
1333 | pst = hpread_end_psymtab (pst, | |
1334 | NULL, /* psymtab_include_list */ | |
1335 | 0, /* includes_used */ | |
1336 | pxdb_header_p->globals * sizeof (struct dntt_type_block), | |
1337 | /* byte index in LNTT of end */ | |
1338 | /* = capping symbol offset */ | |
1339 | /* = LDSYMOFF of nextfile */ | |
1340 | end_adr, /* text high */ | |
1341 | NULL, /* dependency_list */ | |
1342 | 0); /* dependencies_used */ | |
1343 | } | |
1344 | ||
1345 | ||
1346 | #ifdef NEVER_NEVER | |
1347 | /* Now build psts for non-module things (in the tail of | |
1348 | * the LNTT, after the last END MODULE entry). | |
1349 | * | |
1350 | * If null psts were kept on the chain, this would be | |
1351 | * a solution. FIXME | |
1352 | */ | |
1353 | pst = hpread_start_psymtab( objfile, | |
1354 | section_offsets, | |
1355 | "globals", | |
1356 | 0, | |
1357 | (pxdb_header_p->globals | |
1358 | * sizeof (struct dntt_type_block)), | |
1359 | objfile->global_psymbols.next, | |
1360 | objfile->static_psymbols.next); | |
1361 | hpread_end_psymtab( pst, | |
1362 | NULL, 0, | |
1363 | (max_LNTT_sym_index * sizeof (struct dntt_type_block)), | |
1364 | 0, | |
1365 | NULL, 0 ); | |
1366 | #endif | |
1367 | ||
1368 | clear_pst_syms (); | |
1369 | ||
1370 | return 1; | |
1371 | ||
1372 | } /* End of hpread_quick_traverse. */ | |
1373 | ||
1374 | \f | |
1375 | /* Get appropriate header, based on pxdb type. | |
1376 | Return value: 1 if ok, 0 if not */ | |
1377 | int | |
1378 | hpread_get_header( objfile, pxdb_header_p ) | |
1379 | struct objfile *objfile; | |
1380 | PXDB_header_ptr pxdb_header_p; | |
1381 | { | |
1382 | asection *pinfo_section, *debug_section, *header_section; | |
1383 | ||
1384 | #ifdef DUMPING | |
1385 | /* Turn on for debugging information | |
1386 | */ | |
1387 | static int dumping = 0; | |
1388 | #endif | |
1389 | ||
1390 | header_section = bfd_get_section_by_name (objfile->obfd, "$HEADER$"); | |
1391 | if( !header_section ) { | |
1392 | /* We don't have either PINFO or DEBUG sections. But | |
1393 | * stuff like "libc.sl" has no debug info. There's no | |
1394 | * need to warn the user of this, as it may be ok. The | |
1395 | * caller will figure it out and issue any needed | |
1396 | * messages. | |
1397 | */ | |
1398 | #ifdef DUMPING | |
1399 | if( dumping ) | |
1400 | printf( "==No debug info at all for %s.\n", objfile->name ); | |
1401 | #endif | |
1402 | ||
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | /* We would like either a $DEBUG$ or $PINFO$ section. | |
1407 | * Once we know which, we can understand the header | |
1408 | * data (which we have defined to suit the more common | |
1409 | * $DEBUG$ case). | |
1410 | */ | |
1411 | debug_section = bfd_get_section_by_name (objfile->obfd, "$DEBUG$" ); | |
1412 | pinfo_section = bfd_get_section_by_name (objfile->obfd, "$PINFO$" ); | |
1413 | if( debug_section ) { | |
1414 | /* The expected case: normal pxdb header. | |
1415 | */ | |
1416 | bfd_get_section_contents( objfile->obfd, header_section, | |
1417 | pxdb_header_p, 0, sizeof( PXDB_header )); | |
1418 | ||
1419 | if( !pxdb_header_p->pxdbed ) { | |
1420 | /* This shouldn't happen if we check in "symfile.c". | |
1421 | */ | |
1422 | return 0; | |
1423 | } /* DEBUG section */ | |
1424 | } | |
1425 | ||
1426 | else if( pinfo_section ) { | |
1427 | /* The DOC case; we need to translate this into a | |
1428 | * regular header. | |
1429 | */ | |
1430 | DOC_info_PXDB_header doc_header; | |
1431 | ||
1432 | #ifdef DUMPING | |
1433 | if( dumping ) { | |
1434 | printf( "==OOps, PINFO, let's try to handle this, %s.\n", objfile->name ); | |
1435 | } | |
1436 | #endif | |
1437 | ||
1438 | bfd_get_section_contents( objfile->obfd, | |
1439 | header_section, | |
1440 | &doc_header, 0, | |
1441 | sizeof( DOC_info_PXDB_header )); | |
1442 | ||
1443 | if( !doc_header.pxdbed ) { | |
1444 | /* This shouldn't happen if we check in "symfile.c". | |
1445 | */ | |
1446 | warning ("File \"%s\" not processed by pxdb!", objfile->name); | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | /* Copy relevent fields to standard header passed in. | |
1451 | */ | |
1452 | pxdb_header_p->pd_entries = doc_header.pd_entries; | |
1453 | pxdb_header_p->fd_entries = doc_header.fd_entries; | |
1454 | pxdb_header_p->md_entries = doc_header.md_entries; | |
1455 | pxdb_header_p->pxdbed = doc_header.pxdbed; | |
1456 | pxdb_header_p->bighdr = doc_header.bighdr; | |
1457 | pxdb_header_p->sa_header = doc_header.sa_header; | |
1458 | pxdb_header_p->inlined = doc_header.inlined; | |
1459 | pxdb_header_p->globals = doc_header.globals; | |
1460 | pxdb_header_p->time = doc_header.time; | |
1461 | pxdb_header_p->pg_entries = doc_header.pg_entries; | |
1462 | pxdb_header_p->functions = doc_header.functions; | |
1463 | pxdb_header_p->files = doc_header.files; | |
1464 | pxdb_header_p->cd_entries = doc_header.cd_entries; | |
1465 | pxdb_header_p->aa_entries = doc_header.aa_entries; | |
1466 | pxdb_header_p->oi_entries = doc_header.oi_entries; | |
1467 | pxdb_header_p->version = doc_header.version; | |
1468 | } /* PINFO section */ | |
1469 | ||
1470 | else | |
1471 | { | |
1472 | #ifdef DUMPING | |
1473 | if( dumping ) | |
1474 | printf( "==No debug info at all for %s.\n", objfile->name ); | |
1475 | #endif | |
1476 | ||
1477 | return 0; | |
1478 | ||
1479 | } | |
1480 | ||
1481 | return 1; | |
1482 | } /* End of hpread_get_header */ | |
1483 | #endif /* QUICK_LOOK_UP */ | |
1484 | ||
1485 | \f | |
1486 | /* Initialization for reading native HP C debug symbols from OBJFILE. | |
1487 | ||
1488 | Its only purpose in life is to set up the symbol reader's private | |
1489 | per-objfile data structures, and read in the raw contents of the debug | |
1490 | sections (attaching pointers to the debug info into the private data | |
1491 | structures). | |
1492 | ||
1493 | Since BFD doesn't know how to read debug symbols in a format-independent | |
1494 | way (and may never do so...), we have to do it ourselves. Note we may | |
1495 | be called on a file without native HP C debugging symbols. | |
1496 | ||
1497 | FIXME, there should be a cleaner peephole into the BFD environment | |
1498 | here. | |
1499 | */ | |
1500 | void | |
1501 | hpread_symfile_init (objfile) | |
1502 | struct objfile *objfile; | |
1503 | { | |
1504 | asection *vt_section, *slt_section, *lntt_section, *gntt_section; | |
1505 | ||
1506 | /* Allocate struct to keep track of the symfile */ | |
1507 | objfile->sym_private = (PTR) | |
1508 | xmmalloc (objfile->md, sizeof (struct hpread_symfile_info)); | |
1509 | memset (objfile->sym_private, 0, sizeof (struct hpread_symfile_info)); | |
1510 | ||
1511 | /* We haven't read in any types yet. */ | |
1512 | TYPE_VECTOR (objfile) = 0; | |
1513 | ||
1514 | /* Read in data from the $GNTT$ subspace. */ | |
1515 | gntt_section = bfd_get_section_by_name (objfile->obfd, "$GNTT$"); | |
1516 | if (!gntt_section) | |
1517 | return; | |
1518 | ||
1519 | GNTT (objfile) | |
1520 | = obstack_alloc (&objfile->symbol_obstack, | |
1521 | bfd_section_size (objfile->obfd, gntt_section)); | |
1522 | ||
1523 | bfd_get_section_contents (objfile->obfd, gntt_section, GNTT (objfile), | |
1524 | 0, bfd_section_size (objfile->obfd, gntt_section)); | |
1525 | ||
1526 | GNTT_SYMCOUNT (objfile) | |
1527 | = bfd_section_size (objfile->obfd, gntt_section) | |
1528 | / sizeof (struct dntt_type_block); | |
1529 | ||
1530 | /* Read in data from the $LNTT$ subspace. Also keep track of the number | |
1531 | * of LNTT symbols. | |
1532 | * | |
1533 | * FIXME: this could be moved into the psymtab-to-symtab expansion | |
1534 | * code, and save startup time. At the moment this data is | |
1535 | * still used, though. We'd need a way to tell hp-symtab-read.c | |
1536 | * whether or not to load the LNTT. | |
1537 | */ | |
1538 | lntt_section = bfd_get_section_by_name (objfile->obfd, "$LNTT$"); | |
1539 | if (!lntt_section) | |
1540 | return; | |
1541 | ||
1542 | LNTT (objfile) | |
1543 | = obstack_alloc (&objfile->symbol_obstack, | |
1544 | bfd_section_size (objfile->obfd, lntt_section)); | |
1545 | ||
1546 | bfd_get_section_contents (objfile->obfd, lntt_section, LNTT (objfile), | |
1547 | 0, bfd_section_size (objfile->obfd, lntt_section)); | |
1548 | ||
1549 | LNTT_SYMCOUNT (objfile) | |
1550 | = bfd_section_size (objfile->obfd, lntt_section) | |
1551 | / sizeof (struct dntt_type_block); | |
1552 | ||
1553 | /* Read in data from the $SLT$ subspace. $SLT$ contains information | |
1554 | on source line numbers. */ | |
1555 | slt_section = bfd_get_section_by_name (objfile->obfd, "$SLT$"); | |
1556 | if (!slt_section) | |
1557 | return; | |
1558 | ||
1559 | SLT (objfile) = | |
1560 | obstack_alloc (&objfile->symbol_obstack, | |
1561 | bfd_section_size (objfile->obfd, slt_section)); | |
1562 | ||
1563 | bfd_get_section_contents (objfile->obfd, slt_section, SLT (objfile), | |
1564 | 0, bfd_section_size (objfile->obfd, slt_section)); | |
1565 | ||
1566 | /* Read in data from the $VT$ subspace. $VT$ contains things like | |
1567 | names and constants. Keep track of the number of symbols in the VT. */ | |
1568 | vt_section = bfd_get_section_by_name (objfile->obfd, "$VT$"); | |
1569 | if (!vt_section) | |
1570 | return; | |
1571 | ||
1572 | VT_SIZE (objfile) = bfd_section_size (objfile->obfd, vt_section); | |
1573 | ||
1574 | VT (objfile) = | |
1575 | (char *) obstack_alloc (&objfile->symbol_obstack, | |
1576 | VT_SIZE (objfile)); | |
1577 | ||
1578 | bfd_get_section_contents (objfile->obfd, vt_section, VT (objfile), | |
1579 | 0, VT_SIZE (objfile)); | |
1580 | } | |
1581 | ||
1582 | /* Scan and build partial symbols for a symbol file. | |
1583 | * | |
1584 | * The minimal symbol table (either SOM or HP a.out) has already been | |
1585 | * read in; all we need to do is setup partial symbols based on the | |
1586 | * native debugging information. | |
1587 | * | |
1588 | * Note that the minimal table is produced by the linker, and has | |
1589 | * only global routines in it; the psymtab is based on compiler- | |
1590 | * generated debug information and has non-global | |
1591 | * routines in it as well as files and class information. | |
1592 | * | |
1593 | * We assume hpread_symfile_init has been called to initialize the | |
1594 | * symbol reader's private data structures. | |
1595 | * | |
1596 | * SECTION_OFFSETS contains offsets relative to which the symbols in the | |
1597 | * various sections are (depending where the sections were actually loaded). | |
1598 | * MAINLINE is true if we are reading the main symbol table (as | |
1599 | * opposed to a shared lib or dynamically loaded file). | |
1600 | */ | |
1601 | void | |
1602 | hpread_build_psymtabs (objfile, section_offsets, mainline) | |
1603 | struct objfile *objfile; | |
1604 | struct section_offsets *section_offsets; | |
1605 | int mainline; | |
1606 | { | |
1607 | ||
1608 | #ifdef DUMPING | |
1609 | /* Turn this on to get debugging output. | |
1610 | */ | |
1611 | static int dumping = 0; | |
1612 | #endif | |
1613 | ||
1614 | char *namestring; | |
1615 | int past_first_source_file = 0; | |
1616 | struct cleanup *old_chain; | |
1617 | ||
1618 | int hp_symnum, symcount, i; | |
1619 | int scan_start; | |
1620 | ||
1621 | union dnttentry *dn_bufp; | |
1622 | unsigned long valu; | |
1623 | char *p; | |
1624 | int texthigh = 0; | |
1625 | int have_name = 0; | |
1626 | ||
1627 | /* Current partial symtab */ | |
1628 | struct partial_symtab *pst; | |
1629 | ||
1630 | /* List of current psymtab's include files */ | |
1631 | char **psymtab_include_list; | |
1632 | int includes_allocated; | |
1633 | int includes_used; | |
1634 | ||
1635 | /* Index within current psymtab dependency list */ | |
1636 | struct partial_symtab **dependency_list; | |
1637 | int dependencies_used, dependencies_allocated; | |
1638 | ||
1639 | /* Just in case the stabs reader left turds lying around. */ | |
1640 | free_pending_blocks (); | |
1641 | make_cleanup (really_free_pendings, 0); | |
1642 | ||
1643 | pst = (struct partial_symtab *) 0; | |
1644 | ||
1645 | /* We shouldn't use alloca, instead use malloc/free. Doing so avoids | |
1646 | a number of problems with cross compilation and creating useless holes | |
1647 | in the stack when we have to allocate new entries. FIXME. */ | |
1648 | ||
1649 | includes_allocated = 30; | |
1650 | includes_used = 0; | |
1651 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1652 | sizeof (char *)); | |
1653 | ||
1654 | dependencies_allocated = 30; | |
1655 | dependencies_used = 0; | |
1656 | dependency_list = | |
1657 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1658 | sizeof (struct partial_symtab *)); | |
1659 | ||
1660 | old_chain = make_cleanup (free_objfile, objfile); | |
1661 | ||
1662 | last_source_file = 0; | |
1663 | ||
1664 | #ifdef QUICK_LOOK_UP | |
1665 | { | |
1666 | /* Begin code for new-style loading of quick look-up tables. | |
1667 | */ | |
1668 | ||
1669 | /* elz: this checks whether the file has beeen processed by pxdb. | |
1670 | If not we would like to try to read the psymbols in | |
1671 | anyway, but it turns out to be not so easy. So this could | |
1672 | actually be commented out, but I leave it in, just in case | |
1673 | we decide to add support for non-pxdb-ed stuff in the future. | |
1674 | */ | |
1675 | bfd *abfd; | |
1676 | abfd = symfile_bfd_open (objfile->name); | |
1677 | if (!hpread_pxdb_needed(abfd)) | |
1678 | { | |
1679 | if ( psym_new_style ) { | |
1680 | PXDB_header pxdb_header; | |
1681 | int found_modules_in_program; | |
1682 | ||
1683 | if( hpread_get_header( objfile, &pxdb_header )) { | |
1684 | /* Build a minimal table. No types, no global variables, | |
1685 | * no include files.... | |
1686 | */ | |
1687 | #ifdef DUMPING | |
1688 | if( dumping ) | |
1689 | printf( "\nNew method for %s\n", objfile->name ); | |
1690 | #endif | |
1691 | ||
1692 | /* elz: quick_traverse returns true if it found | |
1693 | some modules in the main source file, other | |
1694 | than those in end.c | |
1695 | In C and C++, all the files have MODULES entries | |
1696 | in the LNTT, and the quick table traverse is all | |
1697 | based on finding these MODULES entries. Without | |
1698 | those it cannot work. | |
1699 | It happens that F77 programs don't have MODULES | |
1700 | so the quick traverse gets confused. F90 programs | |
1701 | have modules, and the quick method still works. | |
1702 | So, if modules (other than those in end.c) are | |
1703 | not found we give up on the quick table stuff, | |
1704 | and fall back on the slower method | |
1705 | */ | |
1706 | found_modules_in_program = hpread_quick_traverse( | |
1707 | objfile, | |
1708 | section_offsets, | |
1709 | GNTT( objfile ), | |
1710 | VT(objfile), | |
1711 | &pxdb_header ); | |
1712 | ||
1713 | discard_cleanups (old_chain); | |
1714 | ||
1715 | /* Set up to scan the global section of the LNTT. | |
1716 | * | |
1717 | * This field is not always correct: if there are | |
1718 | * no globals, it will point to the last record in | |
1719 | * the regular LNTT, which is usually an END MODULE. | |
1720 | * | |
1721 | * Since it might happen that there could be a file | |
1722 | * with just one global record, there's no way to | |
1723 | * tell other than by looking at the record, so that's | |
1724 | * done below. | |
1725 | */ | |
1726 | if (found_modules_in_program) | |
1727 | scan_start = pxdb_header.globals; | |
1728 | else | |
1729 | scan_start = 0; | |
1730 | } | |
1731 | ||
1732 | #ifdef DUMPING | |
1733 | else { | |
1734 | if( dumping ) | |
1735 | printf( "\nGoing on to old method for %s\n", objfile->name ); | |
1736 | } | |
1737 | #endif | |
1738 | ||
1739 | } /* End of new method code */ | |
1740 | } /* end of if pxdb exists */ | |
1741 | /* | |
1742 | * elz: if pxdb does not exists on the system, then scan the whole debug info | |
1743 | * Actually this will never be reached because we error out in case there | |
1744 | * is no pxdb on the system. It turns out that the debug info cannot be | |
1745 | * handled the same way as after bxdb has been run, and gdb gets very | |
1746 | * very confused. Ileave this in anyway, in case one day we want to | |
1747 | * support non pxdb-ed files. | |
1748 | */ | |
1749 | else scan_start = 0; | |
1750 | ||
1751 | bfd_close(abfd); /*close the bfd we opened to check for pxdb*/ | |
1752 | ||
1753 | } /*end of ifdef QUICK_LOOK_UP*/ | |
1754 | #else | |
1755 | scan_start = 0; /* if we don't want quick lookup tables start | |
1756 | from the beginning */ | |
1757 | #endif | |
1758 | ||
1759 | /* Make two passes, one over the GNTT symbols, the other for the | |
1760 | * LNTT symbols. | |
1761 | * | |
1762 | * JB comment: above isn't true--they only make one pass, over | |
1763 | * the LNTT. | |
1764 | */ | |
1765 | for (i = 0; i < 1; i++) | |
1766 | { | |
1767 | int within_function = 0; | |
1768 | ||
1769 | if (i) | |
1770 | symcount = GNTT_SYMCOUNT (objfile); | |
1771 | else | |
1772 | symcount = LNTT_SYMCOUNT (objfile); | |
1773 | ||
1774 | ||
1775 | for (hp_symnum = scan_start; hp_symnum < symcount; hp_symnum++) | |
1776 | { | |
1777 | QUIT; | |
1778 | if (i) | |
1779 | dn_bufp = hpread_get_gntt (hp_symnum, objfile); | |
1780 | else | |
1781 | dn_bufp = hpread_get_lntt (hp_symnum, objfile); | |
1782 | ||
1783 | if (dn_bufp->dblock.extension) | |
1784 | continue; | |
1785 | ||
1786 | /* Only handle things which are necessary for minimal symbols. | |
1787 | everything else is ignored. */ | |
1788 | switch (dn_bufp->dblock.kind) | |
1789 | { | |
1790 | case DNTT_TYPE_SRCFILE: | |
1791 | { | |
1792 | #ifdef QUICK_LOOK_UP | |
1793 | if (scan_start == hp_symnum | |
1794 | && symcount == hp_symnum + 1) { | |
1795 | /* | |
1796 | * If there are NO globals in an executable, | |
1797 | * PXDB's index to the globals will point to | |
1798 | * the last record in the file, which | |
1799 | * could be this record. (this happened for F77 libraries) | |
1800 | * ignore it and be done! | |
1801 | */ | |
1802 | continue; | |
1803 | } | |
1804 | #endif | |
1805 | ||
1806 | /* A source file of some kind. Note this may simply | |
1807 | be an included file. */ | |
1808 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1809 | ||
1810 | /* Check if this is the source file we are already working | |
1811 | with. */ | |
1812 | if (pst && !strcmp (namestring, pst->filename)) | |
1813 | continue; | |
1814 | ||
1815 | /* Check if this is an include file, if so check if we have | |
1816 | already seen it. Add it to the include list */ | |
1817 | p = strrchr (namestring, '.'); | |
1818 | if (!strcmp (p, ".h")) | |
1819 | { | |
1820 | int j, found; | |
1821 | ||
1822 | found = 0; | |
1823 | for (j = 0; j < includes_used; j++) | |
1824 | if (!strcmp (namestring, psymtab_include_list[j])) | |
1825 | { | |
1826 | found = 1; | |
1827 | break; | |
1828 | } | |
1829 | if (found) | |
1830 | continue; | |
1831 | ||
1832 | /* Add it to the list of includes seen so far and | |
1833 | allocate more include space if necessary. */ | |
1834 | psymtab_include_list[includes_used++] = namestring; | |
1835 | if (includes_used >= includes_allocated) | |
1836 | { | |
1837 | char **orig = psymtab_include_list; | |
1838 | ||
1839 | psymtab_include_list = (char **) | |
1840 | alloca ((includes_allocated *= 2) * | |
1841 | sizeof (char *)); | |
1842 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
1843 | includes_used * sizeof (char *)); | |
1844 | } | |
1845 | continue; | |
1846 | } | |
1847 | ||
1848 | if (pst) | |
1849 | { | |
1850 | if (!have_name) | |
1851 | { | |
1852 | pst->filename = (char *) | |
1853 | obstack_alloc (&pst->objfile->psymbol_obstack, | |
1854 | strlen (namestring) + 1); | |
1855 | strcpy (pst->filename, namestring); | |
1856 | have_name = 1; | |
1857 | continue; | |
1858 | } | |
1859 | continue; | |
1860 | } | |
1861 | ||
1862 | /* This is a bonafide new source file. | |
1863 | End the current partial symtab and start a new one. */ | |
1864 | ||
1865 | if (pst && past_first_source_file) | |
1866 | { | |
1867 | hpread_end_psymtab (pst, psymtab_include_list, | |
1868 | includes_used, | |
1869 | (hp_symnum | |
1870 | * sizeof (struct dntt_type_block)), | |
1871 | texthigh, | |
1872 | dependency_list, dependencies_used); | |
1873 | pst = (struct partial_symtab *) 0; | |
1874 | includes_used = 0; | |
1875 | dependencies_used = 0; | |
1876 | } | |
1877 | else | |
1878 | past_first_source_file = 1; | |
1879 | ||
1880 | valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); | |
1881 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1882 | pst = hpread_start_psymtab (objfile, section_offsets, | |
1883 | namestring, valu, | |
1884 | (hp_symnum | |
1885 | * sizeof (struct dntt_type_block)), | |
1886 | objfile->global_psymbols.next, | |
1887 | objfile->static_psymbols.next); | |
1888 | texthigh = valu; | |
1889 | have_name = 1; | |
1890 | continue; | |
1891 | } | |
1892 | ||
1893 | case DNTT_TYPE_MODULE: | |
1894 | /* A source file. It's still unclear to me what the | |
1895 | real difference between a DNTT_TYPE_SRCFILE and DNTT_TYPE_MODULE | |
1896 | is supposed to be. */ | |
1897 | ||
1898 | /* First end the previous psymtab */ | |
1899 | if (pst) { | |
1900 | hpread_end_psymtab (pst, psymtab_include_list, includes_used, | |
1901 | ((hp_symnum - 1) | |
1902 | * sizeof (struct dntt_type_block)), | |
1903 | texthigh, | |
1904 | dependency_list, dependencies_used); | |
1905 | pst = (struct partial_symtab *) 0; | |
1906 | includes_used = 0; | |
1907 | dependencies_used = 0; | |
1908 | have_name = 0; | |
1909 | } | |
1910 | ||
1911 | /* Now begin a new module and a new psymtab for it */ | |
1912 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1913 | valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); | |
1914 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1915 | if (!pst) { | |
1916 | pst = hpread_start_psymtab (objfile, section_offsets, | |
1917 | namestring, valu, | |
1918 | (hp_symnum | |
1919 | * sizeof (struct dntt_type_block)), | |
1920 | objfile->global_psymbols.next, | |
1921 | objfile->static_psymbols.next); | |
1922 | texthigh = valu; | |
1923 | have_name = 0; | |
1924 | } | |
1925 | continue; | |
1926 | ||
1927 | case DNTT_TYPE_FUNCTION: | |
1928 | case DNTT_TYPE_ENTRY: | |
1929 | /* The beginning of a function. DNTT_TYPE_ENTRY may also denote | |
1930 | a secondary entry point. */ | |
1931 | valu = dn_bufp->dfunc.hiaddr + ANOFFSET (section_offsets, | |
1932 | SECT_OFF_TEXT); | |
1933 | if (valu > texthigh) | |
1934 | texthigh = valu; | |
1935 | valu = dn_bufp->dfunc.lowaddr + | |
1936 | ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1937 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1938 | if (dn_bufp->dfunc.global) | |
1939 | add_psymbol_to_list (namestring, strlen (namestring), | |
1940 | VAR_NAMESPACE, LOC_BLOCK, | |
1941 | &objfile->global_psymbols, valu, | |
1942 | 0, language_unknown, objfile); | |
1943 | else | |
1944 | add_psymbol_to_list (namestring, strlen (namestring), | |
1945 | VAR_NAMESPACE, LOC_BLOCK, | |
1946 | &objfile->static_psymbols, valu, | |
1947 | 0, language_unknown, objfile); | |
1948 | within_function = 1; | |
1949 | continue; | |
1950 | ||
1951 | case DNTT_TYPE_DOC_FUNCTION: | |
1952 | valu = dn_bufp->ddocfunc.hiaddr + ANOFFSET (section_offsets, | |
1953 | SECT_OFF_TEXT); | |
1954 | if (valu > texthigh) | |
1955 | texthigh = valu; | |
1956 | valu = dn_bufp->ddocfunc.lowaddr + | |
1957 | ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1958 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
1959 | if (dn_bufp->ddocfunc.global) | |
1960 | add_psymbol_to_list (namestring, strlen (namestring), | |
1961 | VAR_NAMESPACE, LOC_BLOCK, | |
1962 | &objfile->global_psymbols, valu, | |
1963 | 0, language_unknown, objfile); | |
1964 | else | |
1965 | add_psymbol_to_list (namestring, strlen (namestring), | |
1966 | VAR_NAMESPACE, LOC_BLOCK, | |
1967 | &objfile->static_psymbols, valu, | |
1968 | 0, language_unknown, objfile); | |
1969 | within_function = 1; | |
1970 | continue; | |
1971 | ||
1972 | case DNTT_TYPE_BEGIN: | |
1973 | case DNTT_TYPE_END: | |
1974 | /* We don't check MODULE end here, because there can be | |
1975 | symbols beyond the module end which properly belong to the | |
1976 | current psymtab -- so we wait till the next MODULE start */ | |
1977 | ||
1978 | ||
1979 | #ifdef QUICK_LOOK_UP | |
1980 | if (scan_start == hp_symnum | |
1981 | && symcount == hp_symnum + 1) { | |
1982 | /* | |
1983 | * If there are NO globals in an executable, | |
1984 | * PXDB's index to the globals will point to | |
1985 | * the last record in the file, which is | |
1986 | * probably an END MODULE, i.e. this record. | |
1987 | * ignore it and be done! | |
1988 | */ | |
1989 | continue; | |
1990 | } | |
1991 | #endif | |
1992 | /* Scope block begin/end. We only care about function | |
1993 | and file blocks right now. */ | |
1994 | ||
1995 | if ((dn_bufp->dend.endkind == DNTT_TYPE_FUNCTION) || | |
1996 | (dn_bufp->dend.endkind == DNTT_TYPE_DOC_FUNCTION)) | |
1997 | within_function = 0; | |
1998 | continue; | |
1999 | ||
2000 | case DNTT_TYPE_SVAR: | |
2001 | case DNTT_TYPE_DVAR: | |
2002 | case DNTT_TYPE_TYPEDEF: | |
2003 | case DNTT_TYPE_TAGDEF: | |
2004 | { | |
2005 | /* Variables, typedefs an the like. */ | |
2006 | enum address_class storage; | |
2007 | namespace_enum namespace; | |
2008 | ||
2009 | /* Don't add locals to the partial symbol table. */ | |
2010 | if (within_function | |
2011 | && (dn_bufp->dblock.kind == DNTT_TYPE_SVAR | |
2012 | || dn_bufp->dblock.kind == DNTT_TYPE_DVAR)) | |
2013 | continue; | |
2014 | ||
2015 | /* TAGDEFs go into the structure namespace. */ | |
2016 | if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF) | |
2017 | namespace = STRUCT_NAMESPACE; | |
2018 | else | |
2019 | namespace = VAR_NAMESPACE; | |
2020 | ||
2021 | /* What kind of "storage" does this use? */ | |
2022 | if (dn_bufp->dblock.kind == DNTT_TYPE_SVAR) | |
2023 | storage = LOC_STATIC; | |
2024 | else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR | |
2025 | && dn_bufp->ddvar.regvar) | |
2026 | storage = LOC_REGISTER; | |
2027 | else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR) | |
2028 | storage = LOC_LOCAL; | |
2029 | else | |
2030 | storage = LOC_UNDEF; | |
2031 | ||
2032 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
2033 | if (!pst) { | |
2034 | pst = hpread_start_psymtab (objfile, section_offsets, | |
2035 | "globals", 0, | |
2036 | (hp_symnum | |
2037 | * sizeof (struct dntt_type_block)), | |
2038 | objfile->global_psymbols.next, | |
2039 | objfile->static_psymbols.next); | |
2040 | } | |
2041 | ||
2042 | /* Compute address of the data symbol */ | |
2043 | valu = dn_bufp->dsvar.location; | |
2044 | /* Relocate in case it's in a shared library */ | |
2045 | if (storage == LOC_STATIC) | |
2046 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2047 | ||
2048 | /* Luckily, dvar, svar, typedef, and tagdef all | |
2049 | * have their "global" bit in the same place, so it works | |
2050 | * (though it's bad programming practice) to reference | |
2051 | * "dsvar.global" even though we may be looking at | |
2052 | * any of the above four types. | |
2053 | */ | |
2054 | if (dn_bufp->dsvar.global) | |
2055 | { | |
2056 | add_psymbol_to_list (namestring, strlen (namestring), | |
2057 | namespace, storage, | |
2058 | &objfile->global_psymbols, | |
2059 | valu, | |
2060 | 0, language_unknown, objfile); | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | add_psymbol_to_list (namestring, strlen (namestring), | |
2065 | namespace, storage, | |
2066 | &objfile->static_psymbols, | |
2067 | valu, | |
2068 | 0, language_unknown, objfile); | |
2069 | } | |
2070 | ||
2071 | /* For TAGDEF's, the above code added the tagname to the | |
2072 | * struct namespace. This will cause tag "t" to be found | |
2073 | * on a reference of the form "(struct t) x". But for | |
2074 | * C++ classes, "t" will also be a typename, which we | |
2075 | * want to find on a reference of the form "ptype t". | |
2076 | * Therefore, we also add "t" to the var namespace. | |
2077 | * Do the same for enum's due to the way aCC generates | |
2078 | * debug info for these (see more extended comment | |
2079 | * in hp-symtab-read.c). | |
2080 | * We do the same for templates, so that "ptype t" | |
2081 | * where "t" is a template also works. | |
2082 | */ | |
2083 | if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF && | |
2084 | dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile)) { | |
2085 | int global = dn_bufp->dtag.global; | |
2086 | /* Look ahead to see if it's a C++ class */ | |
2087 | dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile); | |
2088 | if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS || | |
2089 | dn_bufp->dblock.kind == DNTT_TYPE_ENUM || | |
2090 | dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE) { | |
2091 | if (global) { | |
2092 | add_psymbol_to_list (namestring, strlen (namestring), | |
2093 | VAR_NAMESPACE, storage, | |
2094 | &objfile->global_psymbols, | |
2095 | dn_bufp->dsvar.location, | |
2096 | 0, language_unknown, objfile); | |
2097 | } else { | |
2098 | add_psymbol_to_list (namestring, strlen (namestring), | |
2099 | VAR_NAMESPACE, storage, | |
2100 | &objfile->static_psymbols, | |
2101 | dn_bufp->dsvar.location, | |
2102 | 0, language_unknown, objfile); | |
2103 | } | |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | continue; | |
2108 | ||
2109 | case DNTT_TYPE_MEMENUM: | |
2110 | case DNTT_TYPE_CONST: | |
2111 | /* Constants and members of enumerated types. */ | |
2112 | SET_NAMESTRING (dn_bufp, &namestring, objfile); | |
2113 | if (!pst) | |
2114 | { | |
2115 | pst = hpread_start_psymtab (objfile, section_offsets, | |
2116 | "globals", 0, | |
2117 | (hp_symnum | |
2118 | * sizeof (struct dntt_type_block)), | |
2119 | objfile->global_psymbols.next, | |
2120 | objfile->static_psymbols.next); | |
2121 | } | |
2122 | if (dn_bufp->dconst.global) | |
2123 | add_psymbol_to_list (namestring, strlen (namestring), | |
2124 | VAR_NAMESPACE, LOC_CONST, | |
2125 | &objfile->global_psymbols, 0, | |
2126 | 0, language_unknown, objfile); | |
2127 | else | |
2128 | add_psymbol_to_list (namestring, strlen (namestring), | |
2129 | VAR_NAMESPACE, LOC_CONST, | |
2130 | &objfile->static_psymbols, 0, | |
2131 | 0, language_unknown, objfile); | |
2132 | continue; | |
2133 | default: | |
2134 | continue; | |
2135 | } | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | /* End any pending partial symbol table. | |
2140 | */ | |
2141 | if (pst) | |
2142 | { | |
2143 | hpread_end_psymtab (pst, psymtab_include_list, includes_used, | |
2144 | hp_symnum * sizeof (struct dntt_type_block), | |
2145 | 0, dependency_list, dependencies_used); | |
2146 | } | |
2147 | ||
2148 | discard_cleanups (old_chain); | |
2149 | } | |
2150 | ||
2151 | /* Perform any local cleanups required when we are done with a particular | |
2152 | objfile. I.E, we are in the process of discarding all symbol information | |
2153 | for an objfile, freeing up all memory held for it, and unlinking the | |
2154 | objfile struct from the global list of known objfiles. */ | |
2155 | ||
2156 | void | |
2157 | hpread_symfile_finish (objfile) | |
2158 | struct objfile *objfile; | |
2159 | { | |
2160 | if (objfile->sym_private != NULL) | |
2161 | { | |
2162 | mfree (objfile->md, objfile->sym_private); | |
2163 | } | |
2164 | } | |
2165 | \f | |
2166 | ||
2167 | /* The remaining functions are all for internal use only. */ | |
2168 | ||
2169 | /* Various small functions to get entries in the debug symbol sections. */ | |
2170 | ||
2171 | union dnttentry * | |
2172 | hpread_get_lntt (index, objfile) | |
2173 | int index; | |
2174 | struct objfile *objfile; | |
2175 | { | |
2176 | return (union dnttentry *) | |
2177 | &(LNTT (objfile)[(index * sizeof (struct dntt_type_block))]); | |
2178 | } | |
2179 | ||
2180 | static union dnttentry * | |
2181 | hpread_get_gntt (index, objfile) | |
2182 | int index; | |
2183 | struct objfile *objfile; | |
2184 | { | |
2185 | return (union dnttentry *) | |
2186 | &(GNTT (objfile)[(index * sizeof (struct dntt_type_block))]); | |
2187 | } | |
2188 | ||
2189 | union sltentry * | |
2190 | hpread_get_slt (index, objfile) | |
2191 | int index; | |
2192 | struct objfile *objfile; | |
2193 | { | |
2194 | return (union sltentry *)&(SLT (objfile)[index * sizeof (union sltentry)]); | |
2195 | } | |
2196 | ||
2197 | /* Get the low address associated with some symbol (typically the start | |
2198 | of a particular source file or module). Since that information is not | |
2199 | stored as part of the DNTT_TYPE_MODULE or DNTT_TYPE_SRCFILE symbol we must infer it from | |
2200 | the existance of DNTT_TYPE_FUNCTION symbols. */ | |
2201 | ||
2202 | static unsigned long | |
2203 | hpread_get_textlow (global, index, objfile, symcount) | |
2204 | int global; | |
2205 | int index; | |
2206 | struct objfile *objfile; | |
2207 | int symcount; | |
2208 | { | |
2209 | union dnttentry *dn_bufp; | |
2210 | struct minimal_symbol *msymbol; | |
2211 | ||
2212 | /* Look for a DNTT_TYPE_FUNCTION symbol. */ | |
2213 | if (index < symcount) /* symcount is the number of symbols in */ | |
2214 | { /* the dbinfo, LNTT table*/ | |
2215 | do | |
2216 | { | |
2217 | if (global) | |
2218 | dn_bufp = hpread_get_gntt (index++, objfile); | |
2219 | else | |
2220 | dn_bufp = hpread_get_lntt (index++, objfile); | |
2221 | } while (dn_bufp->dblock.kind != DNTT_TYPE_FUNCTION | |
2222 | && dn_bufp->dblock.kind != DNTT_TYPE_DOC_FUNCTION | |
2223 | && dn_bufp->dblock.kind != DNTT_TYPE_END | |
2224 | && index < symcount); | |
2225 | } | |
2226 | ||
2227 | /* Avoid going past a DNTT_TYPE_END when looking for a DNTT_TYPE_FUNCTION. This | |
2228 | might happen when a sourcefile has no functions. */ | |
2229 | if (dn_bufp->dblock.kind == DNTT_TYPE_END) | |
2230 | return 0; | |
2231 | ||
2232 | /* Avoid going past the end of the LNTT file */ | |
2233 | if (index == symcount) | |
2234 | return 0; | |
2235 | ||
2236 | /* The minimal symbols are typically more accurate for some reason. */ | |
2237 | if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION) | |
2238 | msymbol = lookup_minimal_symbol (dn_bufp->dfunc.name + VT (objfile), NULL, | |
2239 | objfile); | |
2240 | else /* must be a DNTT_TYPE_DOC_FUNCTION */ | |
2241 | msymbol = lookup_minimal_symbol (dn_bufp->ddocfunc.name + VT (objfile), NULL, | |
2242 | objfile); | |
2243 | ||
2244 | if (msymbol) | |
2245 | return SYMBOL_VALUE_ADDRESS (msymbol); | |
2246 | else | |
2247 | return dn_bufp->dfunc.lowaddr; | |
2248 | } | |
2249 | ||
2250 | /* Allocate and partially fill a partial symtab. It will be | |
2251 | completely filled at the end of the symbol list. | |
2252 | ||
2253 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2254 | is the address relative to which its symbols are (incremental) or 0 | |
2255 | (normal). */ | |
2256 | ||
2257 | static struct partial_symtab * | |
2258 | hpread_start_psymtab (objfile, section_offsets, | |
2259 | filename, textlow, ldsymoff, global_syms, static_syms) | |
2260 | struct objfile *objfile; | |
2261 | struct section_offsets *section_offsets; | |
2262 | char *filename; | |
2263 | CORE_ADDR textlow; | |
2264 | int ldsymoff; | |
2265 | struct partial_symbol **global_syms; | |
2266 | struct partial_symbol **static_syms; | |
2267 | { | |
2268 | int offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2269 | extern void hpread_psymtab_to_symtab(); | |
2270 | struct partial_symtab *result = | |
2271 | start_psymtab_common (objfile, section_offsets, | |
2272 | filename, textlow, global_syms, static_syms); | |
2273 | ||
2274 | result->textlow += offset; | |
2275 | result->read_symtab_private = (char *) | |
2276 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); | |
2277 | LDSYMOFF (result) = ldsymoff; | |
2278 | result->read_symtab = hpread_psymtab_to_symtab; | |
2279 | ||
2280 | return result; | |
2281 | } | |
2282 | \f | |
2283 | ||
2284 | /* Close off the current usage of PST. | |
2285 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
2286 | ||
2287 | capping_symbol_offset --Byte index in LNTT or GNTT of the | |
2288 | last symbol processed during the build | |
2289 | of the previous pst. | |
2290 | ||
2291 | FIXME: List variables and peculiarities of same. */ | |
2292 | ||
2293 | static struct partial_symtab * | |
2294 | hpread_end_psymtab (pst, include_list, num_includes, capping_symbol_offset, | |
2295 | capping_text, dependency_list, number_dependencies) | |
2296 | struct partial_symtab *pst; | |
2297 | char **include_list; | |
2298 | int num_includes; | |
2299 | int capping_symbol_offset; | |
2300 | CORE_ADDR capping_text; | |
2301 | struct partial_symtab **dependency_list; | |
2302 | int number_dependencies; | |
2303 | { | |
2304 | int i; | |
2305 | struct objfile *objfile = pst -> objfile; | |
2306 | int offset = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT); | |
2307 | ||
2308 | #ifdef DUMPING | |
2309 | /* Turn on to see what kind of a psymtab we've built. | |
2310 | */ | |
2311 | static int dumping = 0; | |
2312 | #endif | |
2313 | ||
2314 | if (capping_symbol_offset != -1) | |
2315 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
2316 | else | |
2317 | LDSYMLEN(pst) = 0; | |
2318 | pst->texthigh = capping_text + offset; | |
2319 | ||
2320 | pst->n_global_syms = | |
2321 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2322 | pst->n_static_syms = | |
2323 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2324 | ||
2325 | #ifdef DUMPING | |
2326 | if( dumping ) { | |
2327 | printf( | |
2328 | "\nPst %s, LDSYMOFF %x (%x), LDSYMLEN %x (%x), globals %d, statics %d\n", | |
2329 | pst->filename, | |
2330 | LDSYMOFF( pst ), | |
2331 | LDSYMOFF(pst)/sizeof(struct dntt_type_block), | |
2332 | LDSYMLEN( pst ), | |
2333 | LDSYMLEN(pst)/sizeof(struct dntt_type_block), | |
2334 | pst->n_global_syms, pst->n_static_syms ); | |
2335 | } | |
2336 | #endif | |
2337 | ||
2338 | pst->number_of_dependencies = number_dependencies; | |
2339 | if (number_dependencies) | |
2340 | { | |
2341 | pst->dependencies = (struct partial_symtab **) | |
2342 | obstack_alloc (&objfile->psymbol_obstack, | |
2343 | number_dependencies * sizeof (struct partial_symtab *)); | |
2344 | memcpy (pst->dependencies, dependency_list, | |
2345 | number_dependencies * sizeof (struct partial_symtab *)); | |
2346 | } | |
2347 | else | |
2348 | pst->dependencies = 0; | |
2349 | ||
2350 | for (i = 0; i < num_includes; i++) | |
2351 | { | |
2352 | struct partial_symtab *subpst = | |
2353 | allocate_psymtab (include_list[i], objfile); | |
2354 | ||
2355 | subpst->section_offsets = pst->section_offsets; | |
2356 | subpst->read_symtab_private = | |
2357 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
2358 | sizeof (struct symloc)); | |
2359 | LDSYMOFF(subpst) = | |
2360 | LDSYMLEN(subpst) = | |
2361 | subpst->textlow = | |
2362 | subpst->texthigh = 0; | |
2363 | ||
2364 | /* We could save slight bits of space by only making one of these, | |
2365 | shared by the entire set of include files. FIXME-someday. */ | |
2366 | subpst->dependencies = (struct partial_symtab **) | |
2367 | obstack_alloc (&objfile->psymbol_obstack, | |
2368 | sizeof (struct partial_symtab *)); | |
2369 | subpst->dependencies[0] = pst; | |
2370 | subpst->number_of_dependencies = 1; | |
2371 | ||
2372 | subpst->globals_offset = | |
2373 | subpst->n_global_syms = | |
2374 | subpst->statics_offset = | |
2375 | subpst->n_static_syms = 0; | |
2376 | ||
2377 | subpst->readin = 0; | |
2378 | subpst->symtab = 0; | |
2379 | subpst->read_symtab = pst->read_symtab; | |
2380 | } | |
2381 | ||
2382 | sort_pst_symbols (pst); | |
2383 | ||
2384 | /* If there is already a psymtab or symtab for a file of this name, remove it. | |
2385 | (If there is a symtab, more drastic things also happen.) | |
2386 | This happens in VxWorks. */ | |
2387 | free_named_symtabs (pst->filename); | |
2388 | ||
2389 | if (num_includes == 0 | |
2390 | && number_dependencies == 0 | |
2391 | && pst->n_global_syms == 0 | |
2392 | && pst->n_static_syms == 0) | |
2393 | { | |
2394 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
2395 | it is on the obstack, but we can forget to chain it on the list. */ | |
2396 | /* Empty psymtabs happen as a result of header files which don't have | |
2397 | any symbols in them. There can be a lot of them. But this check | |
2398 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2399 | is not empty, but we don't realize that. Fixing that without slowing | |
2400 | things down might be tricky. | |
2401 | * | |
2402 | * It's also wrong if we're using the quick look-up tables, as | |
2403 | * we can get empty psymtabs from modules with no routines in | |
2404 | * them. | |
2405 | */ | |
2406 | ||
2407 | discard_psymtab (pst); | |
2408 | ||
2409 | /* Indicate that psymtab was thrown away. */ | |
2410 | pst = (struct partial_symtab *)NULL; | |
2411 | ||
2412 | } | |
2413 | return pst; | |
2414 | } | |
2415 | ||
2416 | ||
2417 | /* End of hp-psymtab-read.c */ | |
2418 | ||
2419 | /* Set indentation to 4 spaces for Emacs; this file is | |
2420 | mostly non-GNU-ish in its style :-( */ | |
2421 | #if 0 | |
2422 | *** Local Variables: | |
2423 | *** c-basic-offset: 4 | |
2424 | *** End: | |
2425 | #endif |