Commit | Line | Data |
---|---|---|
9b280a7f JG |
1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 | |
3 | Free Software Foundation, Inc. | |
e38e0312 JG |
4 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
5 | Contributed by IBM Corporation. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "bfd.h" | |
e38e0312 | 25 | |
9b280a7f JG |
26 | #if defined(IBM6000_HOST) && defined(IBM6000_TARGET) |
27 | /* Native only: Need struct tbtable in <sys/debug.h> from host, and | |
28 | need xcoff_add_toc_to_loadinfo in rs6000-tdep.c from target. */ | |
818de002 | 29 | |
9b280a7f | 30 | /* AIX XCOFF names have a preceeding dot `.' */ |
e38e0312 JG |
31 | #define NAMES_HAVE_DOT 1 |
32 | ||
33 | #include <sys/types.h> | |
34 | #include <fcntl.h> | |
35 | #include <ctype.h> | |
36 | ||
37 | #include "obstack.h" | |
38 | #include <sys/param.h> | |
5e4d4b0f | 39 | #ifndef NO_SYS_FILE |
e38e0312 | 40 | #include <sys/file.h> |
5e4d4b0f | 41 | #endif |
e38e0312 | 42 | #include <sys/stat.h> |
818de002 | 43 | #include <sys/debug.h> |
e38e0312 JG |
44 | |
45 | #include "symtab.h" | |
1ab3bf1b | 46 | #include "gdbtypes.h" |
e38e0312 | 47 | #include "symfile.h" |
5e2e79f8 | 48 | #include "objfiles.h" |
e38e0312 | 49 | #include "buildsym.h" |
d07734e3 | 50 | #include "stabsread.h" |
2670f34d | 51 | #include "gdb-stabs.h" |
e38e0312 | 52 | |
f5f0679a | 53 | #include "coff/internal.h" /* FIXME, internal data from BFD */ |
e38e0312 | 54 | #include "libcoff.h" /* FIXME, internal data from BFD */ |
f5f0679a | 55 | #include "coff/rs6000.h" /* FIXME, raw file-format guts of xcoff */ |
e38e0312 | 56 | |
1eeba686 PB |
57 | |
58 | /* Define this if you want gdb use the old xcoff symbol processing. This | |
59 | way it won't use common `define_symbol()' function and Sun dbx stab | |
60 | string grammar. And likely it won't be able to do G++ debugging. */ | |
61 | ||
62 | /* #define NO_DEFINE_SYMBOL 1 */ | |
63 | ||
64 | /* Define this if you want gdb to ignore typdef stabs. This was needed for | |
65 | one of Transarc, to reduce the size of the symbol table. Types won't be | |
66 | recognized, but tag names will be. */ | |
67 | ||
554d1be4 | 68 | /* #define NO_TYPEDEFS 1 */ |
1eeba686 | 69 | |
e38e0312 JG |
70 | /* Simplified internal version of coff symbol table information */ |
71 | ||
72 | struct coff_symbol { | |
73 | char *c_name; | |
74 | int c_symnum; /* symbol number of this entry */ | |
75 | int c_nsyms; /* 0 if syment only, 1 if syment + auxent */ | |
76 | long c_value; | |
77 | int c_sclass; | |
78 | int c_secnum; | |
79 | unsigned int c_type; | |
80 | }; | |
81 | ||
82 | /* The COFF line table, in raw form. */ | |
83 | static char *linetab = NULL; /* Its actual contents */ | |
84 | static long linetab_offset; /* Its offset in the file */ | |
85 | static unsigned long linetab_size; /* Its size */ | |
86 | ||
87 | /* last function's saved coff symbol `cs' */ | |
88 | ||
89 | static struct coff_symbol fcn_cs_saved; | |
90 | ||
91 | static bfd *symfile_bfd; | |
92 | ||
93 | /* Core address of start and end of text of current source file. | |
94 | This is calculated from the first function seen after a C_FILE | |
95 | symbol. */ | |
96 | ||
818de002 | 97 | |
e38e0312 JG |
98 | static CORE_ADDR cur_src_end_addr; |
99 | ||
100 | /* Core address of the end of the first object file. */ | |
101 | ||
102 | static CORE_ADDR first_object_file_end; | |
103 | ||
104 | /* pointer to the string table */ | |
105 | static char *strtbl; | |
106 | ||
107 | /* length of the string table */ | |
108 | static int strtbl_len; | |
109 | ||
110 | /* pointer to debug section */ | |
111 | static char *debugsec; | |
112 | ||
113 | /* pointer to the a.out symbol table */ | |
114 | static char *symtbl; | |
115 | ||
116 | /* initial symbol-table-debug-string vector length */ | |
117 | ||
118 | #define INITIAL_STABVECTOR_LENGTH 40 | |
119 | ||
e38e0312 JG |
120 | /* Nonzero if within a function (so symbols should be local, |
121 | if nothing says specifically). */ | |
122 | ||
123 | int within_function; | |
124 | ||
125 | /* Local variables that hold the shift and mask values for the | |
126 | COFF file that we are currently reading. These come back to us | |
127 | from BFD, and are referenced by their macro names, as well as | |
128 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
129 | macros from ../internalcoff.h . */ | |
130 | ||
131 | static unsigned local_n_btshft; | |
132 | static unsigned local_n_tmask; | |
133 | ||
134 | #undef N_BTSHFT | |
135 | #define N_BTSHFT local_n_btshft | |
136 | #undef N_TMASK | |
137 | #define N_TMASK local_n_tmask | |
138 | ||
139 | /* Local variables that hold the sizes in the file of various COFF structures. | |
140 | (We only need to know this to read them from the file -- BFD will then | |
141 | translate the data in them, into `internal_xxx' structs in the right | |
142 | byte order, alignment, etc.) */ | |
143 | ||
144 | static unsigned local_symesz; | |
145 | ||
818de002 | 146 | |
e38e0312 JG |
147 | /* coff_symfile_init() |
148 | is the coff-specific initialization routine for reading symbols. | |
149 | It is passed a struct sym_fns which contains, among other things, | |
150 | the BFD for the file whose symbols are being read, and a slot for | |
151 | a pointer to "private data" which we fill with cookies and other | |
152 | treats for coff_symfile_read(). | |
153 | ||
154 | We will only be called if this is a COFF or COFF-like file. | |
155 | BFD handles figuring out the format of the file, and code in symtab.c | |
156 | uses BFD's determination to vector to us. | |
157 | ||
158 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
159 | ||
160 | struct coff_symfile_info { | |
161 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
162 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
163 | }; | |
164 | ||
165 | ||
1ab3bf1b | 166 | static void |
818de002 PB |
167 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
168 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 169 | |
1ab3bf1b JG |
170 | static void |
171 | free_debugsection PARAMS ((void)); | |
172 | ||
173 | static int | |
174 | init_debugsection PARAMS ((bfd *)); | |
175 | ||
176 | static int | |
177 | init_stringtab PARAMS ((bfd *, long, struct objfile *)); | |
178 | ||
179 | static void | |
9b280a7f | 180 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
181 | |
182 | static void | |
9b280a7f | 183 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d | 184 | |
930acbe5 SG |
185 | struct section_offset; |
186 | ||
80d68b1d | 187 | static void |
9b280a7f | 188 | xcoff_symfile_read PARAMS ((struct objfile *, struct section_offset *, int)); |
1ab3bf1b JG |
189 | |
190 | static void | |
9b280a7f | 191 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 192 | |
fe0b60b2 | 193 | static struct section_offsets * |
9b280a7f | 194 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 195 | |
1ab3bf1b JG |
196 | static int |
197 | init_lineno PARAMS ((bfd *, long, int)); | |
198 | ||
199 | static void | |
200 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
201 | ||
202 | static int | |
203 | read_symbol_lineno PARAMS ((char *, int)); | |
204 | ||
205 | static int | |
206 | read_symbol_nvalue PARAMS ((char *, int)); | |
207 | ||
208 | static struct symbol * | |
209 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
210 | ||
211 | static void | |
212 | read_xcoff_symtab PARAMS ((struct objfile *, int)); | |
213 | ||
1ab3bf1b JG |
214 | static void |
215 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
216 | ||
217 | static void | |
218 | sort_syms PARAMS ((void)); | |
219 | ||
220 | static int | |
221 | compare_symbols PARAMS ((const void *, const void *)); | |
222 | ||
e38e0312 JG |
223 | /* Call sort_syms to sort alphabetically |
224 | the symbols of each block of each symtab. */ | |
225 | ||
226 | static int | |
1ab3bf1b JG |
227 | compare_symbols (s1p, s2p) |
228 | const PTR s1p; | |
229 | const PTR s2p; | |
e38e0312 JG |
230 | { |
231 | /* Names that are less should come first. */ | |
1ab3bf1b JG |
232 | register struct symbol **s1 = (struct symbol **) s1p; |
233 | register struct symbol **s2 = (struct symbol **) s2p; | |
e38e0312 JG |
234 | register int namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2)); |
235 | if (namediff != 0) | |
236 | return namediff; | |
237 | ||
238 | /* For symbols of the same name, registers should come first. */ | |
239 | return ((SYMBOL_CLASS (*s2) == LOC_REGISTER) | |
240 | - (SYMBOL_CLASS (*s1) == LOC_REGISTER)); | |
241 | } | |
242 | ||
243 | ||
244 | /* Sort a vector of symbols by their value. */ | |
245 | ||
246 | static void | |
247 | sort_syms () | |
248 | { | |
249 | register struct symtab *s; | |
1ab3bf1b | 250 | register struct objfile *objfile; |
e38e0312 JG |
251 | register int i, nbl; |
252 | register struct blockvector *bv; | |
253 | register struct block *b; | |
254 | ||
1ab3bf1b | 255 | for (objfile = object_files; objfile != NULL; objfile = objfile -> next) |
e38e0312 | 256 | { |
1ab3bf1b JG |
257 | for (s = objfile -> symtabs; s != NULL; s = s -> next) |
258 | { | |
259 | bv = BLOCKVECTOR (s); | |
260 | nbl = BLOCKVECTOR_NBLOCKS (bv); | |
261 | for (i = 0; i < nbl; i++) | |
262 | { | |
263 | b = BLOCKVECTOR_BLOCK (bv, i); | |
264 | if (BLOCK_SHOULD_SORT (b)) | |
265 | { | |
266 | qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), | |
267 | sizeof (struct symbol *), compare_symbols); | |
268 | } | |
269 | } | |
270 | } | |
e38e0312 | 271 | } |
e38e0312 JG |
272 | } |
273 | ||
274 | ||
275 | /* add a given stab string into given stab vector. */ | |
276 | ||
277 | static void | |
278 | add_stab_to_list (stabname, stabvector) | |
279 | char *stabname; | |
280 | struct pending_stabs **stabvector; | |
281 | { | |
282 | if ( *stabvector == NULL) { | |
283 | *stabvector = (struct pending_stabs *) | |
284 | xmalloc (sizeof (struct pending_stabs) + | |
285 | INITIAL_STABVECTOR_LENGTH * sizeof (char*)); | |
286 | (*stabvector)->count = 0; | |
287 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
288 | } | |
289 | else if ((*stabvector)->count >= (*stabvector)->length) { | |
290 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
291 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 292 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
293 | (*stabvector)->length * sizeof (char*)); |
294 | } | |
295 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
296 | } | |
297 | ||
298 | ||
818de002 PB |
299 | #if 0 |
300 | /* for all the stabs in a given stab vector, build appropriate types | |
301 | and fix their symbols in given symbol vector. */ | |
302 | ||
303 | void | |
304 | patch_block_stabs (symbols, stabs) | |
305 | struct pending *symbols; | |
306 | struct pending_stabs *stabs; | |
307 | { | |
308 | int ii; | |
309 | ||
310 | if (!stabs) | |
311 | return; | |
312 | ||
313 | /* for all the stab entries, find their corresponding symbols and | |
314 | patch their types! */ | |
315 | ||
316 | for (ii=0; ii < stabs->count; ++ii) { | |
317 | char *name = stabs->stab[ii]; | |
318 | char *pp = (char*) index (name, ':'); | |
319 | struct symbol *sym = find_symbol_in_list (symbols, name, pp-name); | |
320 | if (!sym) { | |
321 | ; | |
84ffdec2 | 322 | /* printf ("ERROR! stab symbol not found!\n"); */ /* FIXME */ |
818de002 PB |
323 | /* The above is a false alarm. There are cases the we can have |
324 | a stab, without its symbol. xlc generates this for the extern | |
325 | definitions in inner blocks. */ | |
326 | } | |
327 | else { | |
328 | pp += 2; | |
329 | ||
330 | if (*(pp-1) == 'F' || *(pp-1) == 'f') | |
331 | SYMBOL_TYPE (sym) = lookup_function_type (read_type (&pp)); | |
332 | else | |
333 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
334 | } | |
335 | } | |
336 | } | |
337 | #endif | |
338 | ||
339 | ||
340 | /* compare line table entry addresses. */ | |
341 | ||
342 | static int | |
343 | compare_lte (lte1, lte2) | |
344 | struct linetable_entry *lte1, *lte2; | |
345 | { | |
346 | return lte1->pc - lte2->pc; | |
347 | } | |
348 | ||
349 | /* Give a line table with function entries are marked, arrange its functions | |
350 | in assending order and strip off function entry markers and return it in | |
351 | a newly created table. If the old one is good enough, return the old one. */ | |
352 | ||
353 | static struct linetable * | |
354 | arrange_linetable (oldLineTb) | |
355 | struct linetable *oldLineTb; /* old linetable */ | |
356 | { | |
357 | int ii, jj, | |
358 | newline, /* new line count */ | |
359 | function_count; /* # of functions */ | |
360 | ||
361 | struct linetable_entry *fentry; /* function entry vector */ | |
362 | int fentry_size; /* # of function entries */ | |
363 | struct linetable *newLineTb; /* new line table */ | |
364 | ||
365 | #define NUM_OF_FUNCTIONS 20 | |
366 | ||
367 | fentry_size = NUM_OF_FUNCTIONS; | |
368 | fentry = (struct linetable_entry*) | |
369 | malloc (fentry_size * sizeof (struct linetable_entry)); | |
370 | ||
371 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
372 | ||
373 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
374 | ||
375 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
376 | fentry_size *= 2; | |
377 | fentry = (struct linetable_entry*) | |
378 | realloc (fentry, fentry_size * sizeof (struct linetable_entry)); | |
379 | } | |
380 | fentry[function_count].line = ii; | |
381 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
382 | ++function_count; | |
383 | } | |
384 | } | |
385 | ||
386 | if (function_count == 0) { | |
387 | free (fentry); | |
388 | return oldLineTb; | |
389 | } | |
390 | else if (function_count > 1) | |
391 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
392 | ||
393 | /* allocate a new line table. */ | |
394 | newLineTb = (struct linetable*) malloc (sizeof (struct linetable) + | |
395 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
396 | ||
397 | /* if line table does not start with a function beginning, copy up until | |
398 | a function begin. */ | |
399 | ||
400 | newline = 0; | |
401 | if (oldLineTb->item[0].line != 0) | |
402 | for (newline=0; | |
403 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
404 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
405 | ||
406 | /* Now copy function lines one by one. */ | |
407 | ||
408 | for (ii=0; ii < function_count; ++ii) { | |
409 | for (jj = fentry[ii].line + 1; | |
410 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
411 | ++jj, ++newline) | |
412 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
413 | } | |
414 | free (fentry); | |
415 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
416 | return newLineTb; | |
417 | } | |
418 | ||
419 | ||
420 | ||
421 | /* We try to detect the beginning of a compilation unit. That info will | |
422 | be used as an entry in line number recording routines (enter_line_range) */ | |
423 | ||
424 | static unsigned first_fun_line_offset; | |
425 | static unsigned first_fun_bf; | |
426 | ||
427 | #define mark_first_line(OFFSET, SYMNUM) \ | |
428 | if (!first_fun_line_offset) { \ | |
429 | first_fun_line_offset = OFFSET; \ | |
430 | first_fun_bf = SYMNUM; \ | |
431 | } | |
432 | ||
433 | ||
434 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
435 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
436 | we will determine if we should create additional symtab's to | |
437 | represent if (the include files. */ | |
438 | ||
439 | ||
440 | typedef struct _inclTable { | |
441 | char *name; /* include filename */ | |
442 | int begin, end; /* offsets to the line table */ | |
443 | struct subfile *subfile; | |
444 | unsigned funStartLine; /* start line # of its function */ | |
445 | } InclTable; | |
446 | ||
447 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
448 | static InclTable *inclTable; /* global include table */ | |
449 | static int inclIndx; /* last entry to table */ | |
450 | static int inclLength; /* table length */ | |
451 | static int inclDepth; /* nested include depth */ | |
452 | ||
453 | ||
454 | static void | |
455 | record_include_begin (cs) | |
456 | struct coff_symbol *cs; | |
457 | { | |
9b280a7f | 458 | /* In xcoff, we assume include files cannot be nested (not in .c files |
818de002 PB |
459 | of course, but in corresponding .s files.) */ |
460 | ||
461 | if (inclDepth) | |
9b280a7f | 462 | fatal ("xcoff internal: pending include file exists."); |
818de002 PB |
463 | |
464 | ++inclDepth; | |
465 | ||
466 | /* allocate an include file, or make room for the new entry */ | |
467 | if (inclLength == 0) { | |
468 | inclTable = (InclTable*) | |
469 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
470 | bzero (inclTable, sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
471 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
472 | inclIndx = 0; | |
473 | } | |
474 | else if (inclIndx >= inclLength) { | |
475 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
476 | inclTable = (InclTable*) | |
477 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
478 | bzero (inclTable+inclLength-INITIAL_INCLUDE_TABLE_LENGTH, | |
479 | sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
480 | } | |
481 | ||
482 | inclTable [inclIndx].name = cs->c_name; | |
483 | inclTable [inclIndx].begin = cs->c_value; | |
484 | } | |
485 | ||
486 | ||
487 | static void | |
488 | record_include_end (cs) | |
489 | struct coff_symbol *cs; | |
490 | { | |
491 | InclTable *pTbl; | |
492 | ||
493 | if (inclDepth == 0) | |
9b280a7f | 494 | fatal ("xcoff internal: Mismatch C_BINCL/C_EINCL pair found."); |
818de002 PB |
495 | |
496 | pTbl = &inclTable [inclIndx]; | |
497 | pTbl->end = cs->c_value; | |
498 | ||
499 | --inclDepth; | |
500 | ++inclIndx; | |
501 | } | |
502 | ||
503 | ||
818de002 PB |
504 | /* given the start and end addresses of a compilation unit (or a csect, at times) |
505 | process its lines and create appropriate line vectors. */ | |
506 | ||
507 | static void | |
508 | process_linenos (start, end) | |
509 | CORE_ADDR start, end; | |
510 | { | |
511 | char *pp; | |
512 | int offset, ii; | |
513 | ||
514 | struct subfile main_subfile; /* subfile structure for the main | |
515 | compilation unit. */ | |
516 | ||
517 | /* in the main source file, any time we see a function entry, we reset | |
518 | this variable to function's absolute starting line number. All the | |
519 | following line numbers in the function are relative to this, and | |
520 | we record absolute line numbers in record_line(). */ | |
521 | ||
522 | int main_source_baseline = 0; | |
523 | ||
524 | ||
525 | unsigned *firstLine; | |
526 | CORE_ADDR addr; | |
527 | ||
528 | if (!(offset = first_fun_line_offset)) | |
529 | goto return_after_cleanup; | |
530 | ||
531 | bzero (&main_subfile, sizeof (main_subfile)); | |
532 | first_fun_line_offset = 0; | |
533 | ||
534 | if (inclIndx == 0) | |
556f3d90 PB |
535 | /* All source lines were in the main source file. None in include files. */ |
536 | ||
818de002 PB |
537 | enter_line_range (&main_subfile, offset, 0, start, end, |
538 | &main_source_baseline); | |
539 | ||
540 | /* else, there was source with line numbers in include files */ | |
541 | else { | |
542 | ||
543 | main_source_baseline = 0; | |
544 | for (ii=0; ii < inclIndx; ++ii) { | |
545 | ||
546 | struct subfile *tmpSubfile; | |
547 | ||
548 | /* if there is main file source before include file, enter it. */ | |
549 | if (offset < inclTable[ii].begin) { | |
550 | enter_line_range | |
551 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, start, 0, | |
552 | &main_source_baseline); | |
553 | } | |
554 | ||
555 | /* Have a new subfile for the include file */ | |
556 | ||
557 | tmpSubfile = inclTable[ii].subfile = (struct subfile*) | |
558 | xmalloc (sizeof (struct subfile)); | |
559 | ||
560 | bzero (tmpSubfile, sizeof (struct subfile)); | |
561 | firstLine = &(inclTable[ii].funStartLine); | |
562 | ||
563 | /* enter include file's lines now. */ | |
564 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
565 | inclTable[ii].end, start, 0, firstLine); | |
566 | ||
567 | offset = inclTable[ii].end + LINESZ; | |
568 | } | |
569 | ||
570 | /* all the include files' line have been processed at this point. Now, | |
571 | enter remaining lines of the main file, if any left. */ | |
572 | if (offset < (linetab_offset + linetab_size + 1 - LINESZ)) { | |
573 | enter_line_range (&main_subfile, offset, 0, start, end, | |
574 | &main_source_baseline); | |
575 | } | |
576 | } | |
577 | ||
578 | /* Process main file's line numbers. */ | |
579 | if (main_subfile.line_vector) { | |
580 | struct linetable *lineTb, *lv; | |
581 | ||
582 | lv = main_subfile.line_vector; | |
583 | ||
584 | /* Line numbers are not necessarily ordered. xlc compilation will | |
585 | put static function to the end. */ | |
586 | ||
587 | lineTb = arrange_linetable (lv); | |
588 | if (lv == lineTb) { | |
589 | current_subfile->line_vector = (struct linetable *) | |
590 | xrealloc (lv, (sizeof (struct linetable) | |
591 | + lv->nitems * sizeof (struct linetable_entry))); | |
592 | ||
593 | } | |
594 | else { | |
595 | free (lv); | |
596 | current_subfile->line_vector = lineTb; | |
597 | } | |
598 | ||
599 | current_subfile->line_vector_length = | |
600 | current_subfile->line_vector->nitems; | |
556f3d90 | 601 | } |
818de002 PB |
602 | |
603 | /* Now, process included files' line numbers. */ | |
604 | ||
605 | for (ii=0; ii < inclIndx; ++ii) { | |
606 | ||
607 | if ( (inclTable[ii].subfile)->line_vector) { /* Useless if!!! FIXMEmgo */ | |
608 | struct linetable *lineTb, *lv; | |
609 | ||
610 | lv = (inclTable[ii].subfile)->line_vector; | |
611 | ||
612 | /* Line numbers are not necessarily ordered. xlc compilation will | |
613 | put static function to the end. */ | |
614 | ||
615 | lineTb = arrange_linetable (lv); | |
616 | ||
617 | push_subfile (); | |
618 | ||
619 | /* For the same include file, we might want to have more than one subfile. | |
620 | This happens if we have something like: | |
621 | ||
622 | ...... | |
623 | #include "foo.h" | |
624 | ...... | |
625 | #include "foo.h" | |
626 | ...... | |
627 | ||
628 | while foo.h including code in it. (stupid but possible) | |
629 | Since start_subfile() looks at the name and uses an existing one if finds, | |
630 | we need to provide a fake name and fool it. */ | |
631 | ||
632 | /* start_subfile (inclTable[ii].name, (char*)0); */ | |
633 | start_subfile (" ?", (char*)0); | |
634 | current_subfile->name = | |
635 | obsavestring (inclTable[ii].name, strlen (inclTable[ii].name), | |
636 | ¤t_objfile->symbol_obstack); | |
637 | ||
638 | if (lv == lineTb) { | |
639 | current_subfile->line_vector = (struct linetable *) | |
640 | xrealloc (lv, (sizeof (struct linetable) | |
641 | + lv->nitems * sizeof (struct linetable_entry))); | |
642 | ||
643 | } | |
644 | else { | |
645 | free (lv); | |
646 | current_subfile->line_vector = lineTb; | |
647 | } | |
648 | ||
649 | current_subfile->line_vector_length = | |
650 | current_subfile->line_vector->nitems; | |
651 | start_subfile (pop_subfile (), (char*)0); | |
652 | } | |
653 | } | |
818de002 PB |
654 | |
655 | return_after_cleanup: | |
656 | ||
657 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
658 | inclIndx = 0; | |
659 | ||
660 | /* start with a fresh subfile structure for the next file. */ | |
661 | bzero (&main_subfile, sizeof (struct subfile)); | |
662 | } | |
663 | ||
664 | void | |
665 | aix_process_linenos () | |
666 | { | |
667 | /* process line numbers and enter them into line vector */ | |
668 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
669 | } | |
670 | ||
671 | ||
e38e0312 JG |
672 | /* Enter a given range of lines into the line vector. |
673 | can be called in the following two ways: | |
818de002 PB |
674 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
675 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) */ | |
e38e0312 JG |
676 | |
677 | static void | |
818de002 PB |
678 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine) |
679 | struct subfile *subfile; | |
e38e0312 | 680 | unsigned beginoffset, endoffset; /* offsets to line table */ |
818de002 | 681 | CORE_ADDR startaddr, endaddr; |
e38e0312 JG |
682 | unsigned *firstLine; |
683 | { | |
684 | char *pp, *limit; | |
685 | CORE_ADDR addr; | |
818de002 PB |
686 | |
687 | /* Do Byte swapping, if needed. FIXME! */ | |
688 | #define P_LINENO(PP) (*(unsigned short*)((struct external_lineno*)(PP))->l_lnno) | |
689 | #define P_LINEADDR(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_paddr) | |
690 | #define P_LINESYM(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_symndx) | |
e38e0312 JG |
691 | |
692 | pp = &linetab [beginoffset - linetab_offset]; | |
693 | limit = endoffset ? &linetab [endoffset - linetab_offset] | |
694 | : &linetab [linetab_size -1]; | |
695 | ||
696 | while (pp <= limit) { | |
697 | ||
e38e0312 | 698 | /* find the address this line represents */ |
818de002 PB |
699 | addr = P_LINENO(pp) ? |
700 | P_LINEADDR(pp) : read_symbol_nvalue (symtbl, P_LINESYM(pp)); | |
e38e0312 | 701 | |
818de002 | 702 | if (addr < startaddr || (endaddr && addr > endaddr)) |
e38e0312 JG |
703 | return; |
704 | ||
818de002 PB |
705 | if (P_LINENO(pp) == 0) { |
706 | *firstLine = read_symbol_lineno (symtbl, P_LINESYM(pp)); | |
707 | record_line (subfile, 0, addr); | |
e38e0312 JG |
708 | --(*firstLine); |
709 | } | |
710 | else | |
818de002 PB |
711 | record_line (subfile, *firstLine + P_LINENO(pp), addr); |
712 | ||
713 | pp += LINESZ; | |
714 | } | |
715 | } | |
716 | ||
717 | typedef struct { | |
718 | int fsize; /* file size */ | |
719 | int fixedparms; /* number of fixed parms */ | |
720 | int floatparms; /* number of float parms */ | |
721 | unsigned int parminfo; /* parameter info. | |
722 | See /usr/include/sys/debug.h | |
723 | tbtable_ext.parminfo */ | |
724 | int framesize; /* function frame size */ | |
725 | } TracebackInfo; | |
726 | ||
727 | ||
728 | /* Given a function symbol, return its traceback information. */ | |
729 | ||
730 | TracebackInfo * | |
731 | retrieve_tracebackinfo (abfd, textsec, cs) | |
732 | bfd *abfd; | |
733 | sec_ptr textsec; | |
734 | struct coff_symbol *cs; | |
735 | { | |
736 | #define TBTABLE_BUFSIZ 2000 | |
737 | #define MIN_TBTABSIZ 50 /* minimum buffer size to hold a | |
738 | traceback table. */ | |
739 | ||
740 | static TracebackInfo tbInfo; | |
741 | struct tbtable *ptb; | |
742 | ||
743 | static char buffer [TBTABLE_BUFSIZ]; | |
744 | ||
745 | int *pinsn; | |
746 | int bytesread=0; /* total # of bytes read so far */ | |
747 | int bufferbytes; /* number of bytes in the buffer */ | |
748 | ||
749 | int functionstart = cs->c_value - textsec->vma; | |
750 | ||
751 | bzero (&tbInfo, sizeof (tbInfo)); | |
752 | ||
753 | /* keep reading blocks of data from the text section, until finding a zero | |
754 | word and a traceback table. */ | |
755 | ||
556f3d90 | 756 | while ( |
818de002 PB |
757 | bufferbytes = ( |
758 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread)) ? | |
556f3d90 PB |
759 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)) |
760 | ||
761 | && bfd_get_section_contents (abfd, textsec, buffer, | |
762 | (file_ptr)(functionstart + bytesread), bufferbytes)) | |
818de002 PB |
763 | { |
764 | bytesread += bufferbytes; | |
765 | pinsn = (int*) buffer; | |
766 | ||
767 | /* if this is the first time we filled the buffer, retrieve function | |
768 | framesize info. */ | |
769 | ||
770 | if (bytesread == bufferbytes) { | |
771 | ||
772 | /* skip over unrelated instructions */ | |
773 | ||
774 | if (*pinsn == 0x7c0802a6) /* mflr r0 */ | |
775 | ++pinsn; | |
776 | if ((*pinsn & 0xfc00003e) == 0x7c000026) /* mfcr Rx */ | |
777 | ++pinsn; | |
778 | if ((*pinsn & 0xfc000000) == 0x48000000) /* bl foo, save fprs */ | |
779 | ++pinsn; | |
780 | if ((*pinsn & 0xfc1f0000) == 0xbc010000) /* stm Rx, NUM(r1) */ | |
781 | ++pinsn; | |
782 | ||
783 | do { | |
784 | int tmp = (*pinsn >> 16) & 0xffff; | |
785 | ||
786 | if (tmp == 0x9421) { /* stu r1, NUM(r1) */ | |
787 | tbInfo.framesize = 0x10000 - (*pinsn & 0xffff); | |
788 | break; | |
789 | } | |
790 | else if ((*pinsn == 0x93e1fffc) || /* st r31,-4(r1) */ | |
791 | (tmp == 0x9001)) /* st r0, NUM(r1) */ | |
792 | ; | |
793 | /* else, could not find a frame size. */ | |
794 | else | |
795 | return NULL; | |
796 | ||
797 | } while (++pinsn && *pinsn); | |
798 | ||
799 | if (!tbInfo.framesize) | |
800 | return NULL; | |
801 | } | |
802 | ||
803 | /* look for a zero word. */ | |
804 | ||
805 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
806 | ++pinsn; | |
807 | ||
808 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
809 | continue; | |
e38e0312 | 810 | |
818de002 PB |
811 | if (*pinsn == 0) { |
812 | ||
813 | /* function size is the amount of bytes we have skipped so far. */ | |
814 | tbInfo.fsize = bytesread - (buffer + bufferbytes - (char*)pinsn); | |
815 | ||
816 | ++pinsn; | |
817 | ||
818 | /* if we don't have the whole traceback table in the buffer, re-read | |
819 | the whole thing. */ | |
820 | ||
821 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { | |
822 | ||
823 | /* In case if we are *very* close to the end of the text section | |
824 | and cannot read properly from that point on, abort by returning | |
825 | NULL. | |
826 | Handle this case more graciously -- FIXME */ | |
827 | ||
828 | if (!bfd_get_section_contents ( | |
829 | abfd, textsec, buffer, | |
830 | (file_ptr)(functionstart + | |
831 | bytesread - (buffer + bufferbytes - (char*)pinsn)),MIN_TBTABSIZ)) | |
832 | { printf ("Abnormal return!..\n"); return NULL; } | |
833 | ||
834 | ptb = (struct tbtable *)buffer; | |
835 | } | |
836 | else | |
837 | ptb = (struct tbtable *)pinsn; | |
838 | ||
839 | tbInfo.fixedparms = ptb->tb.fixedparms; | |
840 | tbInfo.floatparms = ptb->tb.floatparms; | |
841 | tbInfo.parminfo = ptb->tb_ext.parminfo; | |
842 | return &tbInfo; | |
843 | } | |
844 | } | |
845 | return NULL; | |
846 | } | |
847 | ||
848 | #if 0 | |
849 | /* Given a function symbol, return a pointer to its traceback table. */ | |
850 | ||
851 | struct tbtable * | |
852 | retrieve_traceback (abfd, textsec, cs, size) | |
853 | bfd *abfd; | |
854 | sec_ptr textsec; | |
855 | struct coff_symbol *cs; | |
856 | int *size; /* return function size */ | |
857 | { | |
858 | #define TBTABLE_BUFSIZ 2000 | |
859 | #define MIN_TBTABSIZ 50 /* minimum buffer size to hold a | |
860 | traceback table. */ | |
861 | ||
862 | static char buffer [TBTABLE_BUFSIZ]; | |
863 | ||
864 | int *pinsn; | |
865 | int bytesread=0; /* total # of bytes read so far */ | |
866 | int bufferbytes; /* number of bytes in the buffer */ | |
867 | ||
868 | int functionstart = cs->c_value - textsec->filepos + textsec->vma; | |
869 | *size = 0; | |
870 | ||
871 | /* keep reading blocks of data from the text section, until finding a zero | |
872 | word and a traceback table. */ | |
873 | ||
874 | while (bfd_get_section_contents (abfd, textsec, buffer, | |
875 | (file_ptr)(functionstart + bytesread), | |
876 | bufferbytes = ( | |
877 | (TBTABLE_BUFSIZ < (textsec->size - functionstart - bytesread)) ? | |
878 | TBTABLE_BUFSIZ : (textsec->size - functionstart - bytesread)))) | |
879 | { | |
880 | bytesread += bufferbytes; | |
881 | pinsn = (int*) buffer; | |
882 | ||
883 | /* look for a zero word. */ | |
884 | ||
885 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
886 | ++pinsn; | |
887 | ||
888 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
889 | continue; | |
890 | ||
891 | if (*pinsn == 0) { | |
892 | ||
893 | /* function size is the amount of bytes we have skipped so far. */ | |
894 | *size = bytesread - (buffer + bufferbytes - pinsn); | |
895 | ||
896 | ++pinsn; | |
897 | ||
898 | /* if we don't have the whole traceback table in the buffer, re-read | |
899 | the whole thing. */ | |
900 | ||
901 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { | |
902 | ||
903 | /* In case if we are *very* close to the end of the text section | |
904 | and cannot read properly from that point on, abort for now. | |
905 | Handle this case more graciously -- FIXME */ | |
906 | ||
907 | if (!bfd_get_section_contents ( | |
908 | abfd, textsec, buffer, | |
909 | (file_ptr)(functionstart + | |
910 | bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ)) | |
911 | /* abort (); */ { printf ("abort!!!\n"); return NULL; } | |
912 | ||
913 | return (struct tbtable *)buffer; | |
914 | } | |
915 | else | |
916 | return (struct tbtable *)pinsn; | |
917 | } | |
e38e0312 | 918 | } |
818de002 | 919 | return NULL; |
e38e0312 | 920 | } |
818de002 PB |
921 | #endif /* 0 */ |
922 | ||
923 | ||
e38e0312 JG |
924 | |
925 | ||
926 | /* Save the vital information for use when closing off the current file. | |
927 | NAME is the file name the symbols came from, START_ADDR is the first | |
928 | text address for the file, and SIZE is the number of bytes of text. */ | |
929 | ||
930 | #define complete_symtab(name, start_addr) { \ | |
931 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 932 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
933 | } |
934 | ||
935 | ||
936 | /* Refill the symbol table input buffer | |
937 | and set the variables that control fetching entries from it. | |
938 | Reports an error if no data available. | |
939 | This function can read past the end of the symbol table | |
940 | (into the string table) but this does no harm. */ | |
941 | ||
942 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
943 | than functions. */ | |
944 | ||
1ab3bf1b | 945 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED) \ |
e38e0312 JG |
946 | { \ |
947 | char *namestr; \ | |
948 | if (ALLOCED) \ | |
949 | namestr = (NAME) + 1; \ | |
950 | else { \ | |
1eeba686 PB |
951 | (NAME) = namestr = \ |
952 | obstack_copy0 (&objfile->symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \ | |
e38e0312 JG |
953 | (ALLOCED) = 1; \ |
954 | } \ | |
1ab3bf1b | 955 | prim_record_minimal_symbol (namestr, (ADDR), (TYPE)); \ |
818de002 | 956 | misc_func_recorded = 1; \ |
e38e0312 JG |
957 | } |
958 | ||
959 | ||
818de002 PB |
960 | /* A parameter template, used by ADD_PARM_TO_PENDING. */ |
961 | ||
962 | static struct symbol parmsym = { /* default parameter symbol */ | |
963 | "", /* name */ | |
964 | VAR_NAMESPACE, /* namespace */ | |
965 | LOC_ARG, /* class */ | |
966 | NULL, /* type */ | |
967 | 0, /* line number */ | |
968 | 0, /* value */ | |
969 | }; | |
970 | ||
971 | /* Add a parameter to a given pending symbol list. */ | |
972 | ||
973 | #define ADD_PARM_TO_PENDING(PARM, VALUE, PTYPE, PENDING_SYMBOLS) \ | |
974 | { \ | |
975 | PARM = (struct symbol *) \ | |
976 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ | |
977 | *(PARM) = parmsym; \ | |
978 | SYMBOL_TYPE (PARM) = PTYPE; \ | |
979 | SYMBOL_VALUE (PARM) = VALUE; \ | |
980 | add_symbol_to_list (PARM, &PENDING_SYMBOLS); \ | |
981 | } | |
982 | ||
e38e0312 | 983 | |
9b280a7f | 984 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
985 | nested. At any given time, a symbol can only be in one static block. |
986 | This is the base address of current static block, zero if non exists. */ | |
987 | ||
988 | static int static_block_base = 0; | |
989 | ||
990 | /* true if space for symbol name has been allocated. */ | |
991 | ||
992 | static int symname_alloced = 0; | |
993 | ||
994 | /* read the whole symbol table of a given bfd. */ | |
995 | ||
1ab3bf1b | 996 | static void |
e38e0312 JG |
997 | read_xcoff_symtab (objfile, nsyms) |
998 | struct objfile *objfile; /* Object file we're reading from */ | |
999 | int nsyms; /* # of symbols */ | |
1000 | { | |
1001 | bfd *abfd = objfile->obfd; | |
e38e0312 JG |
1002 | char *raw_symbol; /* Pointer into raw seething symbol table */ |
1003 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ | |
818de002 PB |
1004 | sec_ptr textsec; /* Pointer to text section */ |
1005 | TracebackInfo *ptb; /* Pointer to traceback table */ | |
1006 | ||
e38e0312 JG |
1007 | struct internal_syment symbol[1]; |
1008 | union internal_auxent main_aux[1]; | |
1009 | struct coff_symbol cs[1]; | |
1010 | CORE_ADDR file_start_addr = 0; | |
1011 | CORE_ADDR file_end_addr = 0; | |
1012 | ||
1013 | int next_file_symnum = -1; | |
1014 | int just_started = 1; | |
1015 | int depth = 0; | |
556f3d90 | 1016 | int toc_offset = 0; /* toc offset value in data section. */ |
e38e0312 | 1017 | int val; |
e38e0312 JG |
1018 | int fcn_last_line; |
1019 | int fcn_start_addr; | |
1020 | long fcn_line_offset; | |
1021 | size_t size; | |
1022 | ||
1eeba686 PB |
1023 | struct coff_symbol fcn_stab_saved; |
1024 | ||
e38e0312 JG |
1025 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
1026 | union internal_auxent fcn_aux_saved; | |
818de002 | 1027 | struct type *fcn_type_saved = NULL; |
e38e0312 JG |
1028 | struct context_stack *new; |
1029 | ||
1030 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
1031 | |
1032 | char *last_csect_name; /* last seen csect's name and value */ | |
1033 | CORE_ADDR last_csect_val; | |
1034 | int misc_func_recorded; /* true if any misc. function */ | |
e38e0312 | 1035 | |
1ab3bf1b JG |
1036 | current_objfile = objfile; |
1037 | ||
e38e0312 JG |
1038 | /* Get the appropriate COFF "constants" related to the file we're handling. */ |
1039 | N_TMASK = coff_data (abfd)->local_n_tmask; | |
1040 | N_BTSHFT = coff_data (abfd)->local_n_btshft; | |
1041 | local_symesz = coff_data (abfd)->local_symesz; | |
1042 | ||
d07734e3 | 1043 | last_source_file = NULL; |
818de002 PB |
1044 | last_csect_name = 0; |
1045 | last_csect_val = 0; | |
1046 | misc_func_recorded = 0; | |
e38e0312 | 1047 | |
d07734e3 | 1048 | start_stabs (); |
e38e0312 JG |
1049 | start_symtab (filestring, (char *)NULL, file_start_addr); |
1050 | symnum = 0; | |
1051 | first_object_file_end = 0; | |
1052 | ||
1053 | /* Allocate space for the entire symbol table at once, and read it | |
1054 | all in. The bfd is already positioned at the beginning of | |
1055 | the symbol table. */ | |
1056 | ||
1057 | size = coff_data (abfd)->local_symesz * nsyms; | |
1058 | symtbl = xmalloc (size); | |
1059 | ||
1060 | val = bfd_read (symtbl, size, 1, abfd); | |
1061 | if (val != size) | |
1062 | perror_with_name ("reading symbol table"); | |
1063 | ||
1064 | raw_symbol = symtbl; | |
1065 | ||
818de002 PB |
1066 | textsec = bfd_get_section_by_name (abfd, ".text"); |
1067 | if (!textsec) { | |
1068 | printf ("Unable to locate text section!\n"); | |
1069 | } | |
1070 | ||
e38e0312 JG |
1071 | while (symnum < nsyms) { |
1072 | ||
1073 | QUIT; /* make this command interruptable. */ | |
1074 | ||
1075 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
1076 | /* read one symbol into `cs' structure. After processing the whole symbol | |
1077 | table, only string table will be kept in memory, symbol table and debug | |
9b280a7f | 1078 | section of xcoff will be freed. Thus we can mark symbols with names |
e38e0312 JG |
1079 | in string table as `alloced'. */ |
1080 | { | |
1081 | int ii; | |
1082 | ||
1083 | /* Swap and align the symbol into a reasonable C structure. */ | |
1084 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1085 | ||
1086 | cs->c_symnum = symnum; | |
1087 | cs->c_nsyms = symbol->n_numaux; | |
1088 | if (symbol->n_zeroes) { | |
1089 | symname_alloced = 0; | |
1090 | /* We must use the original, unswapped, name here so the name field | |
1091 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1092 | we use the new field, it gets overwritten for each symbol. */ | |
1093 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
1094 | } else if (symbol->n_sclass & 0x80) { | |
1095 | cs->c_name = debugsec + symbol->n_offset; | |
1096 | symname_alloced = 0; | |
1097 | } else { /* in string table */ | |
1098 | cs->c_name = strtbl + (int)symbol->n_offset; | |
1099 | symname_alloced = 1; | |
1100 | } | |
1101 | cs->c_value = symbol->n_value; | |
2795260c JG |
1102 | /* n_sclass is signed (FIXME), so we had better not mask off any |
1103 | high bits it contains, since the values we will be comparing | |
1104 | it to are also signed (FIXME). Defined in <coff/internal.h>. | |
1105 | At this point (3Jun92, gnu@cygnus.com) I think the fix is to | |
1106 | make the fields and values unsigned chars, but changing the next | |
1107 | line is a simple patch late in the release cycle, for now. */ | |
1108 | cs->c_sclass = symbol->n_sclass /* & 0xff */; | |
e38e0312 JG |
1109 | cs->c_secnum = symbol->n_scnum; |
1110 | cs->c_type = (unsigned)symbol->n_type; | |
1111 | ||
1112 | raw_symbol += coff_data (abfd)->local_symesz; | |
1113 | ++symnum; | |
1114 | ||
1115 | raw_auxptr = raw_symbol; /* Save addr of first aux entry */ | |
1116 | ||
1117 | /* Skip all the auxents associated with this symbol. */ | |
1118 | for (ii = symbol->n_numaux; ii; --ii ) { | |
1119 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1120 | ++symnum; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* if symbol name starts with ".$" or "$", ignore it. */ | |
1125 | if (cs->c_name[0] == '$' || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1126 | continue; | |
1127 | ||
1128 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) { | |
1129 | if (last_source_file) | |
d07734e3 FF |
1130 | { |
1131 | end_symtab (cur_src_end_addr, 1, 0, objfile); | |
1132 | end_stabs (); | |
1133 | } | |
e38e0312 | 1134 | |
d07734e3 | 1135 | start_stabs (); |
e38e0312 JG |
1136 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); |
1137 | cur_src_end_addr = first_object_file_end; | |
1138 | /* done with all files, everything from here on is globals */ | |
1139 | } | |
1140 | ||
1141 | /* if explicitly specified as a function, treat is as one. */ | |
1142 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) { | |
1143 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1144 | main_aux); | |
1145 | goto function_entry_point; | |
1146 | } | |
1147 | ||
1148 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_nsyms == 1) | |
1149 | { | |
1150 | /* dealing with a symbol with a csect entry. */ | |
1151 | ||
1152 | # define CSECT(PP) ((PP)->x_csect) | |
1153 | # define CSECT_LEN(PP) (CSECT(PP).x_scnlen) | |
1154 | # define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1155 | # define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1156 | # define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1157 | ||
1158 | /* Convert the auxent to something we can access. */ | |
1159 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1160 | main_aux); | |
1161 | ||
1162 | switch (CSECT_SMTYP (main_aux)) { | |
1163 | ||
1164 | case XTY_ER : | |
1165 | continue; /* ignore all external references. */ | |
1166 | ||
1167 | case XTY_SD : /* a section description. */ | |
1168 | { | |
1169 | switch (CSECT_SCLAS (main_aux)) { | |
1170 | ||
1171 | case XMC_PR : /* a `.text' csect. */ | |
1172 | { | |
1173 | ||
1174 | /* A program csect is seen. | |
1175 | ||
1176 | We have to allocate one symbol table for each program csect. Normally | |
1177 | gdb prefers one symtab for each compilation unit (CU). In case of AIX, one | |
1178 | CU might include more than one prog csect, and they don't have to be | |
1179 | adjacent in terms of the space they occupy in memory. Thus, one single | |
1180 | CU might get fragmented in the memory and gdb's file start and end address | |
1181 | approach does not work! */ | |
1182 | ||
818de002 PB |
1183 | if (last_csect_name) { |
1184 | ||
1185 | /* if no misc. function recorded in the last seen csect, enter | |
1186 | it as a function. This will take care of functions like | |
1187 | strcmp() compiled by xlc. */ | |
1188 | ||
1189 | if (!misc_func_recorded) { | |
1190 | int alloced = 0; | |
1191 | RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val, | |
1192 | mst_text, alloced); | |
1193 | } | |
1194 | ||
1195 | ||
e38e0312 JG |
1196 | complete_symtab (filestring, file_start_addr); |
1197 | cur_src_end_addr = file_end_addr; | |
818de002 | 1198 | end_symtab (file_end_addr, 1, 0, objfile); |
d07734e3 FF |
1199 | end_stabs (); |
1200 | start_stabs (); | |
e38e0312 JG |
1201 | start_symtab ((char *)NULL, (char *)NULL, (CORE_ADDR)0); |
1202 | } | |
1203 | ||
1204 | /* If this is the very first csect seen, basically `__start'. */ | |
1205 | if (just_started) { | |
1206 | first_object_file_end = cs->c_value + CSECT_LEN (main_aux); | |
1207 | just_started = 0; | |
1208 | } | |
1209 | ||
1210 | file_start_addr = cs->c_value; | |
1211 | file_end_addr = cs->c_value + CSECT_LEN (main_aux); | |
1212 | ||
1213 | if (cs->c_name && cs->c_name[0] == '.') { | |
818de002 PB |
1214 | last_csect_name = cs->c_name; |
1215 | last_csect_val = cs->c_value; | |
e38e0312 JG |
1216 | } |
1217 | } | |
818de002 | 1218 | misc_func_recorded = 0; |
e38e0312 JG |
1219 | continue; |
1220 | ||
1221 | case XMC_RW : | |
1222 | break; | |
1223 | ||
1224 | /* If the section is not a data description, ignore it. Note that | |
1225 | uninitialized data will show up as XTY_CM/XMC_RW pair. */ | |
1226 | ||
1227 | case XMC_TC0: | |
556f3d90 PB |
1228 | if (toc_offset) |
1229 | warning ("More than one xmc_tc0 symbol found."); | |
1230 | toc_offset = cs->c_value; | |
1231 | continue; | |
e38e0312 JG |
1232 | |
1233 | case XMC_TC : /* ignore toc entries */ | |
1234 | default : /* any other XMC_XXX */ | |
1235 | continue; | |
1236 | } | |
1237 | } | |
1238 | break; /* switch CSECT_SCLAS() */ | |
1239 | ||
1240 | case XTY_LD : | |
1241 | ||
1242 | /* a function entry point. */ | |
1243 | if (CSECT_SCLAS (main_aux) == XMC_PR) { | |
1244 | ||
1245 | function_entry_point: | |
818de002 PB |
1246 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_text, |
1247 | symname_alloced); | |
e38e0312 JG |
1248 | |
1249 | fcn_line_offset = main_aux->x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1250 | fcn_start_addr = cs->c_value; | |
1251 | ||
1252 | /* save the function header info, which will be used | |
1253 | when `.bf' is seen. */ | |
1254 | fcn_cs_saved = *cs; | |
1255 | fcn_aux_saved = *main_aux; | |
818de002 PB |
1256 | |
1257 | ||
1258 | ptb = NULL; | |
1259 | ||
1260 | /* If function has two auxent, then debugging information is | |
1261 | already available for it. Process traceback table for | |
1262 | functions with only one auxent. */ | |
1263 | ||
1264 | if (cs->c_nsyms == 1) | |
1265 | ptb = retrieve_tracebackinfo (abfd, textsec, cs); | |
1266 | ||
1267 | else if (cs->c_nsyms != 2) | |
1268 | abort (); | |
1269 | ||
1270 | /* If there is traceback info, create and add parameters for it. */ | |
1271 | ||
1272 | if (ptb && (ptb->fixedparms || ptb->floatparms)) { | |
1273 | ||
1274 | int parmcnt = ptb->fixedparms + ptb->floatparms; | |
1275 | char *parmcode = (char*) &ptb->parminfo; | |
1276 | int parmvalue = ptb->framesize + 0x18; /* sizeof(LINK AREA) == 0x18 */ | |
1277 | unsigned int ii, mask; | |
1278 | ||
1279 | for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) { | |
1280 | struct symbol *parm; | |
1281 | ||
1282 | if (ptb->parminfo & mask) { /* float or double */ | |
1283 | mask = mask >> 1; | |
1284 | if (ptb->parminfo & mask) { /* double parm */ | |
1285 | ADD_PARM_TO_PENDING | |
1286 | (parm, parmvalue, builtin_type_double, local_symbols); | |
1287 | parmvalue += sizeof (double); | |
1288 | } | |
1289 | else { /* float parm */ | |
1290 | ADD_PARM_TO_PENDING | |
1291 | (parm, parmvalue, builtin_type_float, local_symbols); | |
1292 | parmvalue += sizeof (float); | |
1293 | } | |
1294 | } | |
6c6afbb9 PB |
1295 | else { /* fixed parm, use (int*) for hex rep. */ |
1296 | ADD_PARM_TO_PENDING (parm, parmvalue, | |
1297 | lookup_pointer_type (builtin_type_int), | |
1298 | local_symbols); | |
818de002 PB |
1299 | parmvalue += sizeof (int); |
1300 | } | |
1301 | mask = mask >> 1; | |
1302 | } | |
1303 | ||
1304 | /* Fake this as a function. Needed in process_xcoff_symbol() */ | |
1305 | cs->c_type = 32; | |
1306 | ||
1307 | finish_block(process_xcoff_symbol (cs, objfile), &local_symbols, | |
1308 | pending_blocks, cs->c_value, | |
1309 | cs->c_value + ptb->fsize, objfile); | |
1310 | } | |
e38e0312 JG |
1311 | continue; |
1312 | } | |
818de002 | 1313 | /* shared library function trampoline code entry point. */ |
e38e0312 | 1314 | else if (CSECT_SCLAS (main_aux) == XMC_GL) { |
507e4004 PB |
1315 | |
1316 | /* record trampoline code entries as mst_unknown symbol. When we | |
1317 | lookup mst symbols, we will choose mst_text over mst_unknown. */ | |
1318 | ||
1eeba686 PB |
1319 | #if 1 |
1320 | /* After the implementation of incremental loading of shared | |
1321 | libraries, we don't want to access trampoline entries. This | |
1322 | approach has a consequence of the necessity to bring the whole | |
1323 | shared library at first, in order do anything with it (putting | |
1324 | breakpoints, using malloc, etc). On the other side, this is | |
1325 | consistient with gdb's behaviour on a SUN platform. */ | |
1326 | ||
1327 | /* Trying to prefer *real* function entry over its trampoline, | |
1328 | by assigning `mst_unknown' type to trampoline entries fails. | |
1329 | Gdb treats those entries as chars. FIXME. */ | |
1330 | ||
1331 | /* Recording this entry is necessary. Single stepping relies on | |
1332 | this vector to get an idea about function address boundaries. */ | |
1333 | ||
1334 | prim_record_minimal_symbol (0, cs->c_value, mst_unknown); | |
1335 | #else | |
1336 | ||
1337 | /* record trampoline code entries as mst_unknown symbol. When we | |
1338 | lookup mst symbols, we will choose mst_text over mst_unknown. */ | |
1339 | ||
507e4004 | 1340 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_unknown, |
818de002 | 1341 | symname_alloced); |
1eeba686 | 1342 | #endif |
e38e0312 JG |
1343 | continue; |
1344 | } | |
1345 | break; | |
1346 | ||
1347 | default : /* all other XTY_XXXs */ | |
1348 | break; | |
818de002 | 1349 | } /* switch CSECT_SMTYP() */ } |
e38e0312 JG |
1350 | |
1351 | switch (cs->c_sclass) { | |
1352 | ||
1353 | case C_FILE: | |
1354 | ||
818de002 PB |
1355 | /* see if the last csect needs to be recorded. */ |
1356 | ||
1357 | if (last_csect_name && !misc_func_recorded) { | |
1358 | ||
1359 | /* if no misc. function recorded in the last seen csect, enter | |
1360 | it as a function. This will take care of functions like | |
1361 | strcmp() compiled by xlc. */ | |
1362 | ||
1363 | int alloced = 0; | |
1364 | RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val, | |
1365 | mst_text, alloced); | |
1366 | } | |
1367 | ||
e38e0312 JG |
1368 | /* c_value field contains symnum of next .file entry in table |
1369 | or symnum of first global after last .file. */ | |
1370 | ||
1371 | next_file_symnum = cs->c_value; | |
1372 | ||
1373 | /* complete symbol table for last object file containing | |
1374 | debugging information. */ | |
1375 | ||
d07734e3 FF |
1376 | /* Whether or not there was a csect in the previous file, we have to call |
1377 | `end_stabs' and `start_stabs' to reset type_vector, | |
e38e0312 | 1378 | line_vector, etc. structures. */ |
818de002 | 1379 | |
e38e0312 JG |
1380 | complete_symtab (filestring, file_start_addr); |
1381 | cur_src_end_addr = file_end_addr; | |
818de002 | 1382 | end_symtab (file_end_addr, 1, 0, objfile); |
d07734e3 FF |
1383 | end_stabs (); |
1384 | start_stabs (); | |
e38e0312 | 1385 | start_symtab (cs->c_name, (char *)NULL, (CORE_ADDR)0); |
818de002 | 1386 | last_csect_name = 0; |
e38e0312 JG |
1387 | |
1388 | /* reset file start and end addresses. A compilation unit with no text | |
1389 | (only data) should have zero file boundaries. */ | |
1390 | file_start_addr = file_end_addr = 0; | |
1391 | ||
1392 | filestring = cs->c_name; | |
1393 | break; | |
1394 | ||
1395 | ||
818de002 PB |
1396 | case C_FUN: |
1397 | ||
1eeba686 | 1398 | #ifdef NO_DEFINE_SYMBOL |
818de002 PB |
1399 | /* For a function stab, just save its type in `fcn_type_saved', and leave |
1400 | it for the `.bf' processing. */ | |
1401 | { | |
1402 | char *pp = (char*) index (cs->c_name, ':'); | |
1403 | ||
1404 | if (!pp || ( *(pp+1) != 'F' && *(pp+1) != 'f')) | |
1405 | fatal ("Unrecognized stab"); | |
1406 | pp += 2; | |
1407 | ||
1408 | if (fcn_type_saved) | |
1409 | fatal ("Unprocessed function type"); | |
1410 | ||
1411 | fcn_type_saved = lookup_function_type (read_type (&pp, objfile)); | |
1412 | } | |
1eeba686 PB |
1413 | #else |
1414 | fcn_stab_saved = *cs; | |
1415 | #endif | |
818de002 PB |
1416 | break; |
1417 | ||
1418 | ||
e38e0312 JG |
1419 | case C_FCN: |
1420 | if (strcmp (cs->c_name, ".bf") == 0) { | |
1421 | ||
1422 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1423 | main_aux); | |
1424 | ||
1425 | within_function = 1; | |
1426 | ||
e38e0312 JG |
1427 | /* Linenos are now processed on a file-by-file, not fn-by-fn, basis. |
1428 | Metin did it, I'm not sure why. FIXME. -- gnu@cygnus.com */ | |
818de002 PB |
1429 | |
1430 | /* Two reasons: | |
1431 | ||
1432 | 1) xlc (IBM's native c compiler) postpones static function code | |
1433 | emission to the end of a compilation unit. This way it can | |
1434 | determine if those functions (statics) are needed or not, and | |
1435 | can do some garbage collection (I think). This makes line | |
1436 | numbers and corresponding addresses unordered, and we end up | |
1437 | with a line table like: | |
1438 | ||
1439 | ||
1440 | lineno addr | |
1441 | foo() 10 0x100 | |
1442 | 20 0x200 | |
1443 | 30 0x300 | |
1444 | ||
1445 | foo3() 70 0x400 | |
1446 | 80 0x500 | |
1447 | 90 0x600 | |
1448 | ||
1449 | static foo2() | |
1450 | 40 0x700 | |
1451 | 50 0x800 | |
1452 | 60 0x900 | |
1453 | ||
1454 | and that breaks gdb's binary search on line numbers, if the | |
1455 | above table is not sorted on line numbers. And that sort | |
1456 | should be on function based, since gcc can emit line numbers | |
1457 | like: | |
1458 | ||
1459 | 10 0x100 - for the init/test part of a for stmt. | |
1460 | 20 0x200 | |
1461 | 30 0x300 | |
1462 | 10 0x400 - for the increment part of a for stmt. | |
1463 | ||
1464 | arrange_linenos() will do this sorting. | |
1465 | ||
1466 | ||
1467 | 2) aix symbol table might look like: | |
1468 | ||
1469 | c_file // beginning of a new file | |
1470 | .bi // beginning of include file | |
1471 | .ei // end of include file | |
1472 | .bi | |
1473 | .ei | |
1474 | ||
1475 | basically, .bi/.ei pairs do not necessarily encapsulate | |
1476 | their scope. They need to be recorded, and processed later | |
1477 | on when we come the end of the compilation unit. | |
1478 | Include table (inclTable) and process_linenos() handle | |
1479 | that. | |
1480 | */ | |
1481 | mark_first_line (fcn_line_offset, cs->c_symnum); | |
e38e0312 JG |
1482 | |
1483 | new = push_context (0, fcn_start_addr); | |
1eeba686 PB |
1484 | |
1485 | #ifdef NO_DEFINE_SYMBOL | |
1ab3bf1b | 1486 | new->name = process_xcoff_symbol (&fcn_cs_saved, objfile); |
818de002 PB |
1487 | |
1488 | /* Between a function symbol and `.bf', there always will be a function | |
1489 | stab. We save function type when processing that stab. */ | |
1490 | ||
2b5a8d9c PB |
1491 | if (fcn_type_saved == NULL) { |
1492 | printf ("Unknown function type: symbol 0x%x\n", cs->c_symnum); | |
1493 | SYMBOL_TYPE (new->name) = lookup_function_type (builtin_type_int); | |
1494 | } | |
1495 | else { | |
1496 | SYMBOL_TYPE (new->name) = fcn_type_saved; | |
1497 | fcn_type_saved = NULL; | |
1498 | } | |
1eeba686 PB |
1499 | #else |
1500 | new->name = define_symbol | |
1501 | (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile); | |
1502 | #endif | |
e38e0312 JG |
1503 | } |
1504 | else if (strcmp (cs->c_name, ".ef") == 0) { | |
1505 | ||
1506 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1507 | main_aux); | |
1508 | ||
1509 | /* the value of .ef is the address of epilogue code; | |
1510 | not useful for gdb */ | |
1511 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1512 | contains number of lines to '}' */ | |
1513 | ||
1514 | fcn_last_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
e38e0312 JG |
1515 | new = pop_context (); |
1516 | if (context_stack_depth != 0) | |
1517 | error ("invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.", | |
1518 | symnum); | |
1519 | ||
1520 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1521 | new->start_addr, | |
1522 | fcn_cs_saved.c_value + | |
1ab3bf1b | 1523 | fcn_aux_saved.x_sym.x_misc.x_fsize, objfile); |
e38e0312 JG |
1524 | within_function = 0; |
1525 | } | |
1526 | break; | |
1527 | ||
1528 | case C_BSTAT : /* begin static block */ | |
1529 | static_block_base = read_symbol_nvalue (symtbl, cs->c_value); | |
1530 | break; | |
1531 | ||
1532 | case C_ESTAT : /* end of static block */ | |
1533 | static_block_base = 0; | |
1534 | break; | |
1535 | ||
1536 | case C_ARG : /* These are not implemented. */ | |
1537 | case C_REGPARM : | |
1538 | case C_TPDEF : | |
1539 | case C_STRTAG : | |
1540 | case C_UNTAG : | |
1541 | case C_ENTAG : | |
1542 | printf ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass); | |
1543 | break; | |
1544 | ||
1545 | case C_HIDEXT : /* ignore these.. */ | |
1546 | case C_LABEL : | |
1547 | case C_NULL : | |
1548 | break; | |
1549 | ||
1550 | case C_BINCL : /* beginning of include file */ | |
818de002 PB |
1551 | |
1552 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1553 | order. Thus, when wee see them, we might not know enough info | |
1554 | to process them. Thus, we'll be saving them into a table | |
1555 | (inclTable) and postpone their processing. */ | |
1556 | ||
1557 | record_include_begin (cs); | |
e38e0312 JG |
1558 | break; |
1559 | ||
1560 | case C_EINCL : /* end of include file */ | |
818de002 PB |
1561 | /* see the comment after case C_BINCL. */ |
1562 | record_include_end (cs); | |
e38e0312 JG |
1563 | break; |
1564 | ||
1565 | case C_BLOCK : | |
1566 | if (strcmp (cs->c_name, ".bb") == 0) { | |
1567 | depth++; | |
1568 | new = push_context (depth, cs->c_value); | |
1569 | } | |
1570 | else if (strcmp (cs->c_name, ".eb") == 0) { | |
1571 | new = pop_context (); | |
1572 | if (depth != new->depth) | |
1573 | error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.", | |
1574 | symnum); | |
1575 | ||
1576 | depth--; | |
1577 | if (local_symbols && context_stack_depth > 0) { | |
1578 | /* Make a block for the local symbols within. */ | |
1579 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1ab3bf1b | 1580 | new->start_addr, cs->c_value, objfile); |
e38e0312 JG |
1581 | } |
1582 | local_symbols = new->locals; | |
1583 | } | |
1584 | break; | |
1585 | ||
1586 | default : | |
4ed3a9ea | 1587 | process_xcoff_symbol (cs, objfile); |
e38e0312 JG |
1588 | break; |
1589 | } | |
1590 | ||
1591 | } /* while */ | |
1592 | ||
1593 | if (last_source_file) | |
d07734e3 FF |
1594 | { |
1595 | end_symtab (cur_src_end_addr, 1, 0, objfile); | |
1596 | end_stabs (); | |
1597 | } | |
e38e0312 JG |
1598 | |
1599 | free (symtbl); | |
1ab3bf1b | 1600 | current_objfile = NULL; |
556f3d90 PB |
1601 | |
1602 | /* Record the toc offset value of this symbol table into ldinfo structure. | |
1603 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
1604 | this information would be file auxiliary header. */ | |
1605 | ||
1606 | xcoff_add_toc_to_loadinfo (toc_offset); | |
e38e0312 JG |
1607 | } |
1608 | ||
1609 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1610 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1611 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1612 | *(SYMBOL2) = *(SYMBOL1); |
1613 | ||
1614 | ||
1615 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
1ab3bf1b | 1616 | (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME)); |
e38e0312 JG |
1617 | |
1618 | ||
e38e0312 JG |
1619 | /* process one xcoff symbol. */ |
1620 | ||
1621 | static struct symbol * | |
1ab3bf1b | 1622 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1623 | register struct coff_symbol *cs; |
1ab3bf1b | 1624 | struct objfile *objfile; |
e38e0312 JG |
1625 | { |
1626 | struct symbol onesymbol; | |
1627 | register struct symbol *sym = &onesymbol; | |
1628 | struct symbol *sym2 = NULL; | |
1629 | struct type *ttype; | |
1630 | char *name, *pp, *qq; | |
818de002 | 1631 | int struct_and_type_combined; |
6c6afbb9 | 1632 | int nameless; |
e38e0312 JG |
1633 | |
1634 | name = cs->c_name; | |
1635 | if (name[0] == '.') | |
1636 | ++name; | |
1637 | ||
1638 | bzero (sym, sizeof (struct symbol)); | |
1639 | ||
1640 | /* default assumptions */ | |
1641 | SYMBOL_VALUE (sym) = cs->c_value; | |
1642 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1643 | ||
1644 | if (ISFCN (cs->c_type)) { | |
1645 | ||
1646 | /* At this point, we don't know the type of the function and assume it | |
1647 | is int. This will be patched with the type from its stab entry later | |
1648 | on in patch_block_stabs () */ | |
1649 | ||
1650 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
818de002 | 1651 | SYMBOL_TYPE (sym) = lookup_function_type (lookup_fundamental_type (objfile, FT_INTEGER)); |
e38e0312 JG |
1652 | |
1653 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1654 | SYMBOL_DUP (sym, sym2); | |
1655 | ||
1656 | if (cs->c_sclass == C_EXT) | |
1657 | add_symbol_to_list (sym2, &global_symbols); | |
1658 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1659 | add_symbol_to_list (sym2, &file_symbols); | |
1660 | } | |
1661 | ||
1662 | else { | |
1663 | ||
1664 | /* in case we can't figure out the type, default is `int'. */ | |
818de002 | 1665 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, FT_INTEGER); |
e38e0312 JG |
1666 | |
1667 | switch (cs->c_sclass) | |
1668 | { | |
818de002 | 1669 | #if 0 |
e38e0312 JG |
1670 | case C_FUN: |
1671 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1672 | add_stab_to_list (name, &global_stabs); | |
1673 | else | |
1674 | add_stab_to_list (name, &file_stabs); | |
1675 | break; | |
818de002 | 1676 | #endif |
e38e0312 JG |
1677 | |
1678 | case C_DECL: /* a type decleration?? */ | |
1eeba686 PB |
1679 | |
1680 | #if defined(NO_TYPEDEFS) || defined(NO_DEFINE_SYMBOL) | |
1ab3bf1b | 1681 | qq = (char*) strchr (name, ':'); |
e38e0312 JG |
1682 | if (!qq) /* skip if there is no ':' */ |
1683 | return NULL; | |
1684 | ||
6c6afbb9 PB |
1685 | nameless = (qq == name); |
1686 | ||
818de002 PB |
1687 | struct_and_type_combined = (qq[1] == 'T' && qq[2] == 't'); |
1688 | pp = qq + (struct_and_type_combined ? 3 : 2); | |
2b5a8d9c PB |
1689 | |
1690 | ||
1691 | /* To handle GNU C++ typename abbreviation, we need to be able to fill | |
1692 | in a type's name as soon as space for that type is allocated. */ | |
1693 | ||
1694 | if (struct_and_type_combined && name != qq) { | |
1695 | ||
1696 | int typenums[2]; | |
1697 | struct type *tmp_type; | |
1698 | char *tmp_pp = pp; | |
1699 | ||
1700 | read_type_number (&tmp_pp, typenums); | |
507e4004 | 1701 | tmp_type = dbx_alloc_type (typenums, objfile); |
2b5a8d9c | 1702 | |
6c6afbb9 | 1703 | if (tmp_type && !TYPE_NAME (tmp_type) && !nameless) |
2b5a8d9c | 1704 | TYPE_NAME (tmp_type) = SYMBOL_NAME (sym) = |
507e4004 PB |
1705 | obsavestring (name, qq-name, |
1706 | &objfile->symbol_obstack); | |
2b5a8d9c | 1707 | } |
1eeba686 PB |
1708 | ttype = SYMBOL_TYPE (sym) = read_type (&pp); |
1709 | ||
1710 | /* if there is no name for this typedef, you don't have to keep its | |
1711 | symbol, since nobody could ask for it. Otherwise, build a symbol | |
1712 | and add it into symbol_list. */ | |
1713 | ||
1714 | if (nameless) | |
1715 | return; | |
1716 | ||
1717 | #ifdef NO_TYPEDEFS | |
1718 | /* Transarc wants to eliminate type definitions from the symbol table. | |
1719 | Limited debugging capabilities, but faster symbol table processing | |
1720 | and less memory usage. Note that tag definitions (starting with | |
1721 | 'T') will remain intact. */ | |
1722 | ||
1723 | if (qq[1] != 'T' && (!TYPE_NAME (ttype) || *(TYPE_NAME (ttype)) == '\0')) { | |
1724 | ||
1725 | if (SYMBOL_NAME (sym)) | |
1726 | TYPE_NAME (ttype) = SYMBOL_NAME (sym); | |
1727 | else | |
1728 | TYPE_NAME (ttype) = obsavestring (name, qq-name); | |
1729 | ||
1730 | return; | |
1731 | } | |
1732 | ||
1733 | #endif /* !NO_TYPEDEFS */ | |
e38e0312 JG |
1734 | |
1735 | /* read_type() will return null if type (or tag) definition was | |
1736 | unnnecessarily duplicated. Also, if the symbol doesn't have a name, | |
1737 | there is no need to keep it in symbol table. */ | |
2b5a8d9c | 1738 | /* The above argument no longer valid. read_type() never returns NULL. */ |
e38e0312 | 1739 | |
6c6afbb9 | 1740 | if (!ttype) |
e38e0312 JG |
1741 | return NULL; |
1742 | ||
6c6afbb9 PB |
1743 | /* if there is no name for this typedef, you don't have to keep its |
1744 | symbol, since nobody could ask for it. Otherwise, build a symbol | |
1745 | and add it into symbol_list. */ | |
1746 | ||
1eeba686 | 1747 | if (qq[1] == 'T') |
6c6afbb9 | 1748 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; |
1eeba686 | 1749 | else if (qq[1] == 't') |
6c6afbb9 | 1750 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
1eeba686 PB |
1751 | else { |
1752 | warning ("Unrecognized stab string.\n"); | |
6c6afbb9 | 1753 | return NULL; |
1eeba686 | 1754 | } |
6c6afbb9 | 1755 | |
1eeba686 PB |
1756 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
1757 | if (!SYMBOL_NAME (sym)) | |
1758 | SYMBOL_NAME (sym) = obsavestring (name, qq-name); | |
6c6afbb9 | 1759 | |
1eeba686 PB |
1760 | SYMBOL_DUP (sym, sym2); |
1761 | add_symbol_to_list | |
6c6afbb9 PB |
1762 | (sym2, within_function ? &local_symbols : &file_symbols); |
1763 | ||
1eeba686 PB |
1764 | /* For a combination of struct and type, add one more symbol |
1765 | for the type. */ | |
e38e0312 | 1766 | |
1eeba686 | 1767 | if (struct_and_type_combined) { |
6c6afbb9 PB |
1768 | SYMBOL_DUP (sym, sym2); |
1769 | SYMBOL_NAMESPACE (sym2) = VAR_NAMESPACE; | |
1770 | add_symbol_to_list | |
1771 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1eeba686 | 1772 | } |
e38e0312 | 1773 | |
1eeba686 | 1774 | /* assign a name to the type node. */ |
6c6afbb9 | 1775 | |
1eeba686 | 1776 | if (!TYPE_NAME (ttype) || *(TYPE_NAME (ttype)) == '\0') { |
6c6afbb9 PB |
1777 | if (struct_and_type_combined) |
1778 | TYPE_NAME (ttype) = SYMBOL_NAME (sym); | |
6c6afbb9 | 1779 | else if (qq[1] == 'T') /* struct namespace */ |
e38e0312 JG |
1780 | TYPE_NAME (ttype) = concat ( |
1781 | TYPE_CODE (ttype) == TYPE_CODE_UNION ? "union " : | |
1782 | TYPE_CODE (ttype) == TYPE_CODE_STRUCT? "struct " : "enum ", | |
58ae87f6 | 1783 | SYMBOL_NAME (sym), NULL); |
818de002 | 1784 | } |
e38e0312 JG |
1785 | break; |
1786 | ||
1eeba686 PB |
1787 | #else /* !NO_DEFINE_SYMBOL */ |
1788 | return define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1789 | #endif | |
1790 | ||
e38e0312 JG |
1791 | case C_GSYM: |
1792 | add_stab_to_list (name, &global_stabs); | |
1793 | break; | |
1794 | ||
1795 | case C_PSYM: | |
818de002 | 1796 | case C_RPSYM: |
1eeba686 PB |
1797 | |
1798 | #ifdef NO_DEFINE_SYMBOL | |
1ab3bf1b | 1799 | if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL) |
e38e0312 | 1800 | return NULL; |
1ab3bf1b | 1801 | SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack); |
818de002 | 1802 | SYMBOL_CLASS (sym) = (cs->c_sclass == C_PSYM) ? LOC_ARG : LOC_REGPARM; |
e38e0312 | 1803 | pp += 2; |
1ab3bf1b | 1804 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); |
e38e0312 JG |
1805 | SYMBOL_DUP (sym, sym2); |
1806 | add_symbol_to_list (sym2, &local_symbols); | |
1807 | break; | |
1eeba686 PB |
1808 | #else |
1809 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1810 | SYMBOL_CLASS (sym) = (cs->c_sclass == C_PSYM) ? LOC_ARG : LOC_REGPARM; | |
1811 | return sym; | |
1812 | #endif | |
e38e0312 JG |
1813 | |
1814 | case C_STSYM: | |
1eeba686 PB |
1815 | |
1816 | #ifdef NO_DEFINE_SYMBOL | |
1ab3bf1b | 1817 | if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL) |
e38e0312 | 1818 | return NULL; |
1ab3bf1b | 1819 | SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack); |
e38e0312 JG |
1820 | SYMBOL_CLASS (sym) = LOC_STATIC; |
1821 | SYMBOL_VALUE (sym) += static_block_base; | |
1822 | pp += 2; | |
1ab3bf1b | 1823 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); |
e38e0312 JG |
1824 | SYMBOL_DUP (sym, sym2); |
1825 | add_symbol_to_list | |
1826 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1827 | break; | |
1eeba686 PB |
1828 | #else |
1829 | /* If we are going to use Sun dbx's define_symbol(), we need to | |
1830 | massage our stab string a little. Change 'V' type to 'S' to be | |
1831 | comparible with Sun. */ | |
1832 | ||
1833 | if (*name == ':' || (pp = (char *) index (name, ':')) == NULL) | |
1834 | return NULL; | |
1835 | ||
1836 | ++pp; | |
1837 | if (*pp == 'V') *pp = 'S'; | |
1838 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1839 | SYMBOL_VALUE (sym) += static_block_base; | |
1840 | return sym; | |
1841 | #endif | |
e38e0312 JG |
1842 | |
1843 | case C_LSYM: | |
1ab3bf1b | 1844 | if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL) |
e38e0312 | 1845 | return NULL; |
1ab3bf1b | 1846 | SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack); |
e38e0312 JG |
1847 | SYMBOL_CLASS (sym) = LOC_LOCAL; |
1848 | pp += 1; | |
1ab3bf1b | 1849 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); |
e38e0312 JG |
1850 | SYMBOL_DUP (sym, sym2); |
1851 | add_symbol_to_list (sym2, &local_symbols); | |
1852 | break; | |
1853 | ||
1854 | case C_AUTO: | |
1855 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1856 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1857 | SYMBOL_DUP (sym, sym2); | |
1858 | add_symbol_to_list (sym2, &local_symbols); | |
1859 | break; | |
1860 | ||
1861 | case C_EXT: | |
1862 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1863 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1864 | SYMBOL_DUP (sym, sym2); | |
1865 | add_symbol_to_list (sym2, &global_symbols); | |
1866 | break; | |
1867 | ||
1868 | case C_STAT: | |
1869 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1870 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1871 | SYMBOL_DUP (sym, sym2); | |
1872 | add_symbol_to_list | |
1873 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1874 | break; | |
1875 | ||
1876 | case C_REG: | |
1877 | printf ("ERROR! C_REG is not fully implemented!\n"); | |
1878 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1879 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1880 | SYMBOL_DUP (sym, sym2); | |
1881 | add_symbol_to_list (sym2, &local_symbols); | |
1882 | break; | |
1883 | ||
1884 | case C_RSYM: | |
1eeba686 PB |
1885 | |
1886 | #ifdef NO_DEFINE_SYMBOL | |
1ab3bf1b | 1887 | pp = (char*) strchr (name, ':'); |
e38e0312 JG |
1888 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
1889 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (cs->c_value); | |
1890 | if (pp) { | |
1ab3bf1b | 1891 | SYMBOL_NAME (sym) = obsavestring (name, pp-name, &objfile -> symbol_obstack); |
e38e0312 JG |
1892 | pp += 2; |
1893 | if (*pp) | |
1ab3bf1b | 1894 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); |
e38e0312 JG |
1895 | } |
1896 | else | |
1897 | /* else this is not a stab entry, suppose the type is either | |
1898 | `int' or `float', depending on the register class. */ | |
1899 | ||
1ab3bf1b | 1900 | SYMBOL_TYPE (sym) = (SYMBOL_VALUE (sym) < 32) |
818de002 PB |
1901 | ? lookup_fundamental_type (objfile, FT_INTEGER) |
1902 | : lookup_fundamental_type (objfile, FT_FLOAT); | |
e38e0312 JG |
1903 | |
1904 | SYMBOL_DUP (sym, sym2); | |
1905 | add_symbol_to_list (sym2, &local_symbols); | |
1906 | break; | |
1eeba686 PB |
1907 | #else |
1908 | if (pp) { | |
1909 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1910 | return sym; | |
1911 | } | |
1912 | else { | |
1913 | warning ("A non-stab C_RSYM needs special handling."); | |
1914 | return NULL; | |
1915 | } | |
1916 | #endif | |
e38e0312 JG |
1917 | |
1918 | default : | |
1eeba686 | 1919 | warning ("Unexpected storage class: %d.", cs->c_sclass); |
e38e0312 JG |
1920 | return NULL; |
1921 | } | |
1922 | } | |
1923 | return sym2; | |
1924 | } | |
1925 | ||
1926 | ||
1927 | static int | |
1928 | read_symbol_nvalue (symtable, symno) | |
1929 | char *symtable; | |
1930 | int symno; | |
1931 | { | |
1932 | struct internal_syment symbol[1]; | |
1933 | ||
1934 | bfd_coff_swap_sym_in (symfile_bfd, symtable + (symno*local_symesz), symbol); | |
1935 | return symbol->n_value; | |
1936 | } | |
1937 | ||
1938 | ||
1939 | static int | |
1940 | read_symbol_lineno (symtable, symno) | |
1941 | char *symtable; | |
1942 | int symno; | |
1943 | { | |
1944 | struct internal_syment symbol[1]; | |
1945 | union internal_auxent main_aux[1]; | |
1946 | ||
1947 | int ii; | |
1948 | ||
1949 | for (ii = 0; ii < 50; ii++) { | |
1950 | bfd_coff_swap_sym_in (symfile_bfd, | |
1951 | symtable + (symno*local_symesz), symbol); | |
1952 | if (symbol->n_sclass == C_FCN && 0 == strcmp (symbol->n_name, ".bf")) | |
1953 | goto gotit; | |
6b5b330b | 1954 | symno += symbol->n_numaux+1; |
e38e0312 JG |
1955 | } |
1956 | ||
1957 | printf ("GDB Error: `.bf' not found.\n"); | |
1958 | return 0; | |
1959 | ||
1960 | gotit: | |
1961 | /* take aux entry and return its lineno */ | |
1962 | symno++; | |
1963 | bfd_coff_swap_aux_in (symfile_bfd, symtable+(symno*local_symesz), | |
1964 | symbol->n_type, symbol->n_sclass, main_aux); | |
1965 | ||
1966 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1967 | } | |
1968 | ||
1969 | /* Support for line number handling */ | |
1970 | ||
1971 | /* This function is called for every section; it finds the outer limits | |
1972 | * of the line table (minimum and maximum file offset) so that the | |
1973 | * mainline code can read the whole thing for efficiency. | |
1974 | */ | |
1975 | static void | |
1976 | find_linenos(abfd, asect, vpinfo) | |
1977 | bfd *abfd; | |
1978 | sec_ptr asect; | |
1ab3bf1b | 1979 | PTR vpinfo; |
e38e0312 JG |
1980 | { |
1981 | struct coff_symfile_info *info; | |
1982 | int size, count; | |
1983 | file_ptr offset, maxoff; | |
1984 | ||
1985 | count = asect->lineno_count; | |
1986 | ||
818de002 | 1987 | if (strcmp (asect->name, ".text") || count == 0) |
e38e0312 JG |
1988 | return; |
1989 | ||
1990 | size = count * coff_data (symfile_bfd)->local_linesz; | |
1991 | info = (struct coff_symfile_info *)vpinfo; | |
1992 | offset = asect->line_filepos; | |
1993 | maxoff = offset + size; | |
1994 | ||
1995 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1996 | info->min_lineno_offset = offset; | |
1997 | ||
1998 | if (maxoff > info->max_lineno_offset) | |
1999 | info->max_lineno_offset = maxoff; | |
2000 | } | |
2001 | ||
2002 | ||
2003 | /* Read in all the line numbers for fast lookups later. Leave them in | |
2004 | external (unswapped) format in memory; we'll swap them as we enter | |
2005 | them into GDB's data structures. */ | |
2006 | ||
2007 | static int | |
2008 | init_lineno (abfd, offset, size) | |
2009 | bfd *abfd; | |
2010 | long offset; | |
2011 | int size; | |
2012 | { | |
2013 | int val; | |
2014 | ||
2015 | if (bfd_seek(abfd, offset, 0) < 0) | |
2016 | return -1; | |
2017 | ||
2018 | linetab = (char *) xmalloc(size); | |
2019 | ||
2020 | val = bfd_read(linetab, 1, size, abfd); | |
2021 | if (val != size) | |
2022 | return -1; | |
2023 | ||
2024 | linetab_offset = offset; | |
2025 | linetab_size = size; | |
1ab3bf1b | 2026 | make_cleanup (free, linetab); /* Be sure it gets de-allocated. */ |
e38e0312 JG |
2027 | return 0; |
2028 | } | |
93fe4e33 | 2029 | \f |
e38e0312 JG |
2030 | /* dbx allows the text of a symbol name to be continued into the |
2031 | next symbol name! When such a continuation is encountered | |
2032 | (a \ at the end of the text of a name) | |
2033 | call this function to get the continuation. */ | |
2034 | /* So far, I haven't seen this happenning xlc output. I doubt we'll need this | |
9b280a7f | 2035 | for xcoff. */ |
e38e0312 | 2036 | |
1d4c28c5 | 2037 | #undef next_symbol_text |
e38e0312 JG |
2038 | #define next_symbol_text() \ |
2039 | printf ("Gdb Error: symbol names on multiple lines not implemented.\n") | |
2040 | ||
2041 | ||
2042 | /* xlc/dbx combination uses a set of builtin types, starting from -1. return | |
2043 | the proper type node fora given builtin type #. */ | |
2044 | ||
2045 | struct type * | |
2046 | builtin_type (pp) | |
2047 | char **pp; | |
2048 | { | |
2049 | int typenums[2]; | |
2050 | ||
2051 | if (**pp != '-') { | |
2052 | printf ("ERROR!, unknown built-in type!\n"); | |
2053 | return NULL; | |
2054 | } | |
2055 | *pp += 1; | |
2056 | read_type_number (pp, typenums); | |
2057 | ||
2058 | /* default types are defined in dbxstclass.h. */ | |
2059 | switch ( typenums[1] ) { | |
2060 | case 1: | |
1ab3bf1b | 2061 | return lookup_fundamental_type (current_objfile, FT_INTEGER); |
e38e0312 | 2062 | case 2: |
1ab3bf1b | 2063 | return lookup_fundamental_type (current_objfile, FT_CHAR); |
e38e0312 | 2064 | case 3: |
1ab3bf1b | 2065 | return lookup_fundamental_type (current_objfile, FT_SHORT); |
e38e0312 | 2066 | case 4: |
1ab3bf1b | 2067 | return lookup_fundamental_type (current_objfile, FT_LONG); |
e38e0312 | 2068 | case 5: |
1ab3bf1b | 2069 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR); |
e38e0312 | 2070 | case 6: |
1ab3bf1b | 2071 | return lookup_fundamental_type (current_objfile, FT_SIGNED_CHAR); |
e38e0312 | 2072 | case 7: |
1ab3bf1b | 2073 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT); |
e38e0312 | 2074 | case 8: |
1ab3bf1b | 2075 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
e38e0312 | 2076 | case 9: |
1ab3bf1b | 2077 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER); |
e38e0312 | 2078 | case 10: |
1ab3bf1b | 2079 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG); |
e38e0312 | 2080 | case 11: |
1ab3bf1b | 2081 | return lookup_fundamental_type (current_objfile, FT_VOID); |
e38e0312 | 2082 | case 12: |
1ab3bf1b | 2083 | return lookup_fundamental_type (current_objfile, FT_FLOAT); |
e38e0312 | 2084 | case 13: |
1ab3bf1b | 2085 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT); |
e38e0312 | 2086 | case 14: |
1ab3bf1b | 2087 | return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT); |
e38e0312 | 2088 | case 15: |
1ab3bf1b JG |
2089 | /* requires a builtin `integer' */ |
2090 | return lookup_fundamental_type (current_objfile, FT_INTEGER); | |
e38e0312 | 2091 | case 16: |
1ab3bf1b | 2092 | return lookup_fundamental_type (current_objfile, FT_BOOLEAN); |
e38e0312 | 2093 | case 17: |
1ab3bf1b JG |
2094 | /* requires builtin `short real' */ |
2095 | return lookup_fundamental_type (current_objfile, FT_FLOAT); | |
e38e0312 | 2096 | case 18: |
1ab3bf1b JG |
2097 | /* requires builtin `real' */ |
2098 | return lookup_fundamental_type (current_objfile, FT_FLOAT); | |
e38e0312 JG |
2099 | default : |
2100 | printf ("ERROR! Unknown builtin type -%d\n", typenums[1]); | |
2101 | return NULL; | |
2102 | } | |
2103 | } | |
2104 | ||
1ab3bf1b | 2105 | static void |
9b280a7f | 2106 | xcoff_new_init (objfile) |
80d68b1d | 2107 | struct objfile *objfile; |
e38e0312 | 2108 | { |
e38e0312 JG |
2109 | } |
2110 | ||
1ab3bf1b | 2111 | static void |
9b280a7f | 2112 | xcoff_symfile_init (objfile) |
80d68b1d | 2113 | struct objfile *objfile; |
e38e0312 | 2114 | { |
80d68b1d | 2115 | bfd *abfd = objfile->obfd; |
e38e0312 JG |
2116 | |
2117 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
2118 | objfile -> sym_private = xmmalloc (objfile -> md, |
2119 | sizeof (struct coff_symfile_info)); | |
5e2e79f8 | 2120 | init_entry_point_info (objfile); |
e38e0312 JG |
2121 | } |
2122 | ||
80d68b1d FF |
2123 | /* Perform any local cleanups required when we are done with a particular |
2124 | objfile. I.E, we are in the process of discarding all symbol information | |
2125 | for an objfile, freeing up all memory held for it, and unlinking the | |
2126 | objfile struct from the global list of known objfiles. */ | |
2127 | ||
2128 | static void | |
9b280a7f | 2129 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
2130 | struct objfile *objfile; |
2131 | { | |
2132 | if (objfile -> sym_private != NULL) | |
2133 | { | |
2134 | mfree (objfile -> md, objfile -> sym_private); | |
2135 | } | |
2136 | ||
2137 | /* Start with a fresh include table for the next objfile. */ | |
2138 | ||
2139 | if (inclTable) | |
2140 | { | |
2141 | free (inclTable); | |
2142 | inclTable = NULL; | |
2143 | } | |
2144 | inclIndx = inclLength = inclDepth = 0; | |
2145 | } | |
2146 | ||
e38e0312 JG |
2147 | |
2148 | static int | |
1ab3bf1b | 2149 | init_stringtab(abfd, offset, objfile) |
e38e0312 JG |
2150 | bfd *abfd; |
2151 | long offset; | |
1ab3bf1b | 2152 | struct objfile *objfile; |
e38e0312 JG |
2153 | { |
2154 | long length; | |
2155 | int val; | |
2156 | unsigned char lengthbuf[4]; | |
2157 | ||
2158 | if (bfd_seek(abfd, offset, 0) < 0) | |
2159 | return -1; | |
2160 | ||
2161 | val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
2162 | length = bfd_h_get_32(abfd, lengthbuf); | |
2163 | ||
2164 | /* If no string table is needed, then the file may end immediately | |
2165 | after the symbols. Just return with `strtbl' set to null. */ | |
2166 | ||
2167 | if (val != sizeof length || length < sizeof length) | |
2168 | return 0; | |
2169 | ||
2170 | /* Allocate string table from symbol_obstack. We will need this table | |
2171 | as long as we have its symbol table around. */ | |
2172 | ||
1ab3bf1b | 2173 | strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length); |
e38e0312 JG |
2174 | if (strtbl == NULL) |
2175 | return -1; | |
2176 | ||
2177 | bcopy(&length, strtbl, sizeof length); | |
2178 | if (length == sizeof length) | |
2179 | return 0; | |
2180 | ||
2181 | val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd); | |
2182 | ||
2183 | if (val != length - sizeof length || strtbl[length - 1] != '\0') | |
2184 | return -1; | |
2185 | ||
2186 | return 0; | |
2187 | } | |
2188 | ||
2189 | static int | |
2190 | init_debugsection(abfd) | |
2191 | bfd *abfd; | |
2192 | { | |
2193 | register sec_ptr secp; | |
2194 | bfd_size_type length; | |
2195 | ||
2196 | if (debugsec) { | |
2197 | free(debugsec); | |
2198 | debugsec = NULL; | |
2199 | } | |
2200 | ||
2201 | secp = bfd_get_section_by_name(abfd, ".debug"); | |
2202 | if (!secp) | |
2203 | return 0; | |
2204 | ||
2205 | if (!(length = bfd_section_size(abfd, secp))) | |
2206 | return 0; | |
2207 | ||
1ab3bf1b | 2208 | debugsec = (char *) xmalloc ((unsigned)length); |
e38e0312 JG |
2209 | if (debugsec == NULL) |
2210 | return -1; | |
2211 | ||
2212 | if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) { | |
2213 | printf ("Can't read .debug section from symbol file\n"); | |
2214 | return -1; | |
2215 | } | |
2216 | return 0; | |
2217 | } | |
2218 | ||
2219 | static void | |
2220 | free_debugsection() | |
2221 | { | |
2222 | if (debugsec) | |
2223 | free(debugsec); | |
2224 | debugsec = NULL; | |
2225 | } | |
2226 | ||
2227 | ||
9b280a7f | 2228 | /* xcoff version of symbol file read. */ |
e38e0312 | 2229 | |
1ab3bf1b | 2230 | static void |
9b280a7f | 2231 | xcoff_symfile_read (objfile, section_offset, mainline) |
80d68b1d | 2232 | struct objfile *objfile; |
2670f34d | 2233 | struct section_offset *section_offset; |
e38e0312 JG |
2234 | int mainline; |
2235 | { | |
2236 | int num_symbols; /* # of symbols */ | |
2237 | int symtab_offset; /* symbol table and */ | |
2238 | int stringtab_offset; /* string table file offsets */ | |
2239 | int val; | |
2240 | bfd *abfd; | |
80d68b1d | 2241 | struct coff_symfile_info *info; |
e38e0312 JG |
2242 | char *name; |
2243 | ||
80d68b1d FF |
2244 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2245 | symfile_bfd = abfd = objfile->obfd; | |
2246 | name = objfile->name; | |
e38e0312 JG |
2247 | |
2248 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2249 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2250 | stringtab_offset = symtab_offset + | |
2251 | num_symbols * coff_data(abfd)->local_symesz; | |
2252 | ||
2253 | info->min_lineno_offset = 0; | |
2254 | info->max_lineno_offset = 0; | |
2255 | bfd_map_over_sections (abfd, find_linenos, info); | |
2256 | ||
2257 | /* FIXME! This stuff should move into symfile_init */ | |
2258 | if (info->min_lineno_offset != 0 | |
2259 | && info->max_lineno_offset > info->min_lineno_offset) { | |
2260 | ||
2261 | /* only read in the line # table if one exists */ | |
2262 | val = init_lineno(abfd, info->min_lineno_offset, | |
2263 | info->max_lineno_offset - info->min_lineno_offset); | |
2264 | ||
2265 | if (val < 0) | |
2266 | error("\"%s\": error reading line numbers\n", name); | |
2267 | } | |
2268 | ||
80d68b1d | 2269 | val = init_stringtab(abfd, stringtab_offset, objfile); |
e38e0312 JG |
2270 | if (val < 0) { |
2271 | error ("\"%s\": can't get string table", name); | |
2272 | } | |
2273 | ||
2274 | if (init_debugsection(abfd) < 0) { | |
2275 | error ("Error reading .debug section of `%s'\n", name); | |
2276 | } | |
2277 | ||
2278 | /* Position to read the symbol table. Do not read it all at once. */ | |
2279 | val = bfd_seek(abfd, (long)symtab_offset, 0); | |
2280 | if (val < 0) | |
2281 | perror_with_name(name); | |
2282 | ||
2283 | if (bfd_tell(abfd) != symtab_offset) | |
2284 | fatal("bfd? BFD!"); | |
2285 | ||
1ab3bf1b JG |
2286 | init_minimal_symbol_collection (); |
2287 | make_cleanup (discard_minimal_symbols, 0); | |
e38e0312 | 2288 | |
556f3d90 | 2289 | /* Initialize load info structure. */ |
e38e0312 | 2290 | if (mainline) |
556f3d90 | 2291 | xcoff_init_loadinfo (); |
e38e0312 JG |
2292 | |
2293 | /* Now that the executable file is positioned at symbol table, | |
2294 | process it and define symbols accordingly. */ | |
2295 | ||
80d68b1d | 2296 | read_xcoff_symtab(objfile, num_symbols); |
e38e0312 | 2297 | |
1eeba686 PB |
2298 | /* Free debug section. */ |
2299 | free_debugsection (); | |
e38e0312 JG |
2300 | |
2301 | /* Sort symbols alphabetically within each block. */ | |
2302 | sort_syms (); | |
2303 | ||
1ab3bf1b JG |
2304 | /* Install any minimal symbols that have been collected as the current |
2305 | minimal symbols for this objfile. */ | |
2306 | ||
80d68b1d | 2307 | install_minimal_symbols (objfile); |
e38e0312 JG |
2308 | |
2309 | /* Make a default for file to list. */ | |
2310 | select_source_symtab (0); | |
2311 | } | |
2312 | ||
2670f34d JG |
2313 | /* XCOFF-specific parsing routine for section offsets. |
2314 | Plain and simple for now. */ | |
2315 | ||
2316 | static | |
2317 | struct section_offsets * | |
9b280a7f | 2318 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2319 | struct objfile *objfile; |
2320 | CORE_ADDR addr; | |
2321 | { | |
2322 | struct section_offsets *section_offsets; | |
2323 | int i; | |
2324 | ||
2325 | section_offsets = (struct section_offsets *) | |
2326 | obstack_alloc (&objfile -> psymbol_obstack, | |
2327 | sizeof (struct section_offsets) + | |
2328 | sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2329 | ||
2330 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2331 | ANOFFSET (section_offsets, i) = addr; | |
2332 | ||
2333 | return section_offsets; | |
2334 | } | |
9b280a7f | 2335 | /* Register our ability to parse symbols for xcoff BFD files. */ |
e38e0312 | 2336 | |
9b280a7f | 2337 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2338 | { |
80d68b1d FF |
2339 | "aixcoff-rs6000", /* sym_name: name or name prefix of BFD target type */ |
2340 | 15, /* sym_namelen: number of significant sym_name chars */ | |
9b280a7f JG |
2341 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2342 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2343 | xcoff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2344 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2345 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2346 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2347 | }; |
2348 | ||
2349 | void | |
2350 | _initialize_xcoffread () | |
2351 | { | |
9b280a7f | 2352 | add_symtab_fns(&xcoff_sym_fns); |
e38e0312 | 2353 | } |
6c6afbb9 | 2354 | |
1eeba686 | 2355 | #else /* IBM6000_HOST */ |
818de002 | 2356 | struct type * |
84ffdec2 JG |
2357 | builtin_type (ignore) |
2358 | char **ignore; | |
818de002 | 2359 | { |
50055e94 | 2360 | fatal ("GDB internal error: builtin_type called on non-RS/6000!"); |
818de002 | 2361 | } |
1eeba686 | 2362 | #endif /* IBM6000_HOST */ |