Commit | Line | Data |
---|---|---|
9b280a7f | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
d1f14b46 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 |
9b280a7f | 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 | ||
9b280a7f | 23 | /* Native only: Need struct tbtable in <sys/debug.h> from host, and |
e5eeaaf8 JG |
24 | need xcoff_add_toc_to_loadinfo in rs6000-tdep.c from target. |
25 | need xcoff_init_loadinfo ditto. | |
26 | However, if you grab <sys/debug.h> and make it available on your | |
27 | host, and define FAKING_RS6000, then this code will compile. */ | |
818de002 | 28 | |
dd469789 JG |
29 | #include "defs.h" |
30 | #include "bfd.h" | |
31 | ||
e38e0312 JG |
32 | #include <sys/types.h> |
33 | #include <fcntl.h> | |
34 | #include <ctype.h> | |
e8abe489 | 35 | #include <string.h> |
e38e0312 JG |
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 | 44 | |
27ad511f JK |
45 | #include "coff/internal.h" /* FIXME, internal data from BFD */ |
46 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
47 | #include "coff/rs6000.h" /* FIXME, raw file-format guts of xcoff */ | |
48 | ||
e38e0312 | 49 | #include "symtab.h" |
1ab3bf1b | 50 | #include "gdbtypes.h" |
e38e0312 | 51 | #include "symfile.h" |
5e2e79f8 | 52 | #include "objfiles.h" |
e38e0312 | 53 | #include "buildsym.h" |
d07734e3 | 54 | #include "stabsread.h" |
dd469789 | 55 | #include "complaints.h" |
e38e0312 | 56 | |
a81ce07d JK |
57 | #include "gdb-stabs.h" |
58 | ||
73262420 | 59 | /* For interface with stabsread.c. */ |
c41e08c4 | 60 | #include "aout/stab_gnu.h" |
1eeba686 | 61 | |
e38e0312 JG |
62 | /* Simplified internal version of coff symbol table information */ |
63 | ||
64 | struct coff_symbol { | |
65 | char *c_name; | |
66 | int c_symnum; /* symbol number of this entry */ | |
d4a0983a | 67 | int c_naux; /* 0 if syment only, 1 if syment + auxent */ |
e38e0312 | 68 | long c_value; |
ef5b809c | 69 | unsigned char c_sclass; |
e38e0312 JG |
70 | int c_secnum; |
71 | unsigned int c_type; | |
72 | }; | |
73 | ||
74 | /* The COFF line table, in raw form. */ | |
75 | static char *linetab = NULL; /* Its actual contents */ | |
76 | static long linetab_offset; /* Its offset in the file */ | |
77 | static unsigned long linetab_size; /* Its size */ | |
78 | ||
79 | /* last function's saved coff symbol `cs' */ | |
80 | ||
81 | static struct coff_symbol fcn_cs_saved; | |
82 | ||
83 | static bfd *symfile_bfd; | |
84 | ||
85 | /* Core address of start and end of text of current source file. | |
86 | This is calculated from the first function seen after a C_FILE | |
87 | symbol. */ | |
88 | ||
818de002 | 89 | |
e38e0312 JG |
90 | static CORE_ADDR cur_src_end_addr; |
91 | ||
92 | /* Core address of the end of the first object file. */ | |
93 | ||
94 | static CORE_ADDR first_object_file_end; | |
95 | ||
96 | /* pointer to the string table */ | |
97 | static char *strtbl; | |
98 | ||
99 | /* length of the string table */ | |
100 | static int strtbl_len; | |
101 | ||
102 | /* pointer to debug section */ | |
103 | static char *debugsec; | |
104 | ||
105 | /* pointer to the a.out symbol table */ | |
106 | static char *symtbl; | |
107 | ||
c84a96d7 JK |
108 | /* Number of symbols in symtbl. */ |
109 | static int symtbl_num_syms; | |
110 | ||
e38e0312 JG |
111 | /* initial symbol-table-debug-string vector length */ |
112 | ||
113 | #define INITIAL_STABVECTOR_LENGTH 40 | |
114 | ||
e38e0312 JG |
115 | /* Nonzero if within a function (so symbols should be local, |
116 | if nothing says specifically). */ | |
117 | ||
118 | int within_function; | |
119 | ||
120 | /* Local variables that hold the shift and mask values for the | |
121 | COFF file that we are currently reading. These come back to us | |
122 | from BFD, and are referenced by their macro names, as well as | |
123 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
124 | macros from ../internalcoff.h . */ | |
125 | ||
126 | static unsigned local_n_btshft; | |
127 | static unsigned local_n_tmask; | |
128 | ||
129 | #undef N_BTSHFT | |
130 | #define N_BTSHFT local_n_btshft | |
131 | #undef N_TMASK | |
132 | #define N_TMASK local_n_tmask | |
133 | ||
134 | /* Local variables that hold the sizes in the file of various COFF structures. | |
135 | (We only need to know this to read them from the file -- BFD will then | |
136 | translate the data in them, into `internal_xxx' structs in the right | |
137 | byte order, alignment, etc.) */ | |
138 | ||
139 | static unsigned local_symesz; | |
140 | ||
e38e0312 JG |
141 | struct coff_symfile_info { |
142 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
143 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
144 | }; | |
145 | ||
dd469789 JG |
146 | static struct complaint rsym_complaint = |
147 | {"Non-stab C_RSYM `%s' needs special handling", 0, 0}; | |
148 | ||
149 | static struct complaint storclass_complaint = | |
150 | {"Unexpected storage class: %d", 0, 0}; | |
151 | ||
152 | static struct complaint bf_notfound_complaint = | |
153 | {"line numbers off, `.bf' symbol not found", 0, 0}; | |
e38e0312 | 154 | |
f8203ed0 JK |
155 | extern struct complaint ef_complaint; |
156 | extern struct complaint eb_complaint; | |
157 | ||
1ab3bf1b | 158 | static void |
818de002 PB |
159 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
160 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 161 | |
1ab3bf1b JG |
162 | static void |
163 | free_debugsection PARAMS ((void)); | |
164 | ||
165 | static int | |
166 | init_debugsection PARAMS ((bfd *)); | |
167 | ||
168 | static int | |
d5931d79 | 169 | init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *)); |
1ab3bf1b JG |
170 | |
171 | static void | |
9b280a7f | 172 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
173 | |
174 | static void | |
9b280a7f | 175 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d FF |
176 | |
177 | static void | |
1b880e74 | 178 | xcoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
1ab3bf1b JG |
179 | |
180 | static void | |
9b280a7f | 181 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 182 | |
fe0b60b2 | 183 | static struct section_offsets * |
9b280a7f | 184 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 185 | |
1ab3bf1b | 186 | static int |
d5931d79 | 187 | init_lineno PARAMS ((bfd *, file_ptr, int)); |
1ab3bf1b | 188 | |
0eb22669 PS |
189 | static void |
190 | free_linetab PARAMS ((void)); | |
191 | ||
1ab3bf1b JG |
192 | static void |
193 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
194 | ||
e8abe489 PS |
195 | static char * |
196 | coff_getfilename PARAMS ((union internal_auxent *)); | |
197 | ||
3c02636b JK |
198 | static void |
199 | read_symbol PARAMS ((struct internal_syment *, int)); | |
200 | ||
1ab3bf1b | 201 | static int |
c84a96d7 | 202 | read_symbol_lineno PARAMS ((int)); |
1ab3bf1b JG |
203 | |
204 | static int | |
c84a96d7 | 205 | read_symbol_nvalue PARAMS ((int)); |
1ab3bf1b JG |
206 | |
207 | static struct symbol * | |
208 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
209 | ||
210 | static void | |
211 | read_xcoff_symtab PARAMS ((struct objfile *, int)); | |
212 | ||
1ab3bf1b JG |
213 | static void |
214 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
215 | ||
a81ce07d | 216 | \f |
a81ce07d JK |
217 | /* Return the section_offsets* that CS points to. */ |
218 | static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *)); | |
219 | ||
220 | struct find_targ_sec_arg { | |
221 | int targ_index; | |
222 | int *resultp; | |
223 | }; | |
224 | ||
225 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
226 | ||
227 | static void find_targ_sec (abfd, sect, obj) | |
228 | bfd *abfd; | |
229 | asection *sect; | |
230 | PTR obj; | |
231 | { | |
232 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
233 | if (sect->target_index == args->targ_index) | |
234 | { | |
235 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
236 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
237 | *args->resultp = SECT_OFF_TEXT; | |
238 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
239 | *args->resultp = SECT_OFF_DATA; | |
240 | else | |
241 | *args->resultp = SECT_OFF_BSS; | |
242 | } | |
243 | } | |
244 | ||
245 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
246 | static int | |
247 | cs_to_section (cs, objfile) | |
248 | struct coff_symbol *cs; | |
249 | struct objfile *objfile; | |
250 | { | |
251 | int off = SECT_OFF_TEXT; | |
252 | struct find_targ_sec_arg args; | |
253 | args.targ_index = cs->c_secnum; | |
254 | args.resultp = &off; | |
255 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
256 | return off; | |
257 | } | |
a81ce07d | 258 | \f |
e38e0312 JG |
259 | /* add a given stab string into given stab vector. */ |
260 | ||
261 | static void | |
262 | add_stab_to_list (stabname, stabvector) | |
263 | char *stabname; | |
264 | struct pending_stabs **stabvector; | |
265 | { | |
266 | if ( *stabvector == NULL) { | |
267 | *stabvector = (struct pending_stabs *) | |
268 | xmalloc (sizeof (struct pending_stabs) + | |
269 | INITIAL_STABVECTOR_LENGTH * sizeof (char*)); | |
270 | (*stabvector)->count = 0; | |
271 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
272 | } | |
273 | else if ((*stabvector)->count >= (*stabvector)->length) { | |
274 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
275 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 276 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
277 | (*stabvector)->length * sizeof (char*)); |
278 | } | |
279 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
280 | } | |
194d98c6 JK |
281 | \f |
282 | /* Linenos are processed on a file-by-file basis. | |
283 | ||
284 | Two reasons: | |
285 | ||
286 | 1) xlc (IBM's native c compiler) postpones static function code | |
287 | emission to the end of a compilation unit. This way it can | |
288 | determine if those functions (statics) are needed or not, and | |
289 | can do some garbage collection (I think). This makes line | |
290 | numbers and corresponding addresses unordered, and we end up | |
291 | with a line table like: | |
292 | ||
293 | ||
294 | lineno addr | |
295 | foo() 10 0x100 | |
296 | 20 0x200 | |
297 | 30 0x300 | |
298 | ||
299 | foo3() 70 0x400 | |
300 | 80 0x500 | |
301 | 90 0x600 | |
302 | ||
303 | static foo2() | |
304 | 40 0x700 | |
305 | 50 0x800 | |
306 | 60 0x900 | |
307 | ||
308 | and that breaks gdb's binary search on line numbers, if the | |
309 | above table is not sorted on line numbers. And that sort | |
310 | should be on function based, since gcc can emit line numbers | |
311 | like: | |
312 | ||
313 | 10 0x100 - for the init/test part of a for stmt. | |
314 | 20 0x200 | |
315 | 30 0x300 | |
316 | 10 0x400 - for the increment part of a for stmt. | |
e38e0312 | 317 | |
194d98c6 | 318 | arrange_linetable() will do this sorting. |
e38e0312 | 319 | |
194d98c6 | 320 | 2) aix symbol table might look like: |
818de002 | 321 | |
194d98c6 JK |
322 | c_file // beginning of a new file |
323 | .bi // beginning of include file | |
324 | .ei // end of include file | |
325 | .bi | |
326 | .ei | |
818de002 | 327 | |
194d98c6 JK |
328 | basically, .bi/.ei pairs do not necessarily encapsulate |
329 | their scope. They need to be recorded, and processed later | |
330 | on when we come the end of the compilation unit. | |
331 | Include table (inclTable) and process_linenos() handle | |
332 | that. */ | |
818de002 PB |
333 | |
334 | /* compare line table entry addresses. */ | |
335 | ||
194d98c6 | 336 | static int |
818de002 | 337 | compare_lte (lte1, lte2) |
194d98c6 | 338 | struct linetable_entry *lte1, *lte2; |
818de002 PB |
339 | { |
340 | return lte1->pc - lte2->pc; | |
341 | } | |
342 | ||
343 | /* Give a line table with function entries are marked, arrange its functions | |
344 | in assending order and strip off function entry markers and return it in | |
345 | a newly created table. If the old one is good enough, return the old one. */ | |
c438b3af JK |
346 | /* FIXME: I think all this stuff can be replaced by just passing |
347 | sort_linevec = 1 to end_symtab. */ | |
818de002 PB |
348 | |
349 | static struct linetable * | |
350 | arrange_linetable (oldLineTb) | |
351 | struct linetable *oldLineTb; /* old linetable */ | |
352 | { | |
353 | int ii, jj, | |
354 | newline, /* new line count */ | |
355 | function_count; /* # of functions */ | |
356 | ||
357 | struct linetable_entry *fentry; /* function entry vector */ | |
358 | int fentry_size; /* # of function entries */ | |
359 | struct linetable *newLineTb; /* new line table */ | |
360 | ||
361 | #define NUM_OF_FUNCTIONS 20 | |
362 | ||
363 | fentry_size = NUM_OF_FUNCTIONS; | |
364 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 365 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
366 | |
367 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
368 | ||
369 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
370 | ||
371 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
372 | fentry_size *= 2; | |
373 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 374 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
375 | } |
376 | fentry[function_count].line = ii; | |
377 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
378 | ++function_count; | |
379 | } | |
380 | } | |
381 | ||
382 | if (function_count == 0) { | |
383 | free (fentry); | |
384 | return oldLineTb; | |
385 | } | |
386 | else if (function_count > 1) | |
387 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
388 | ||
389 | /* allocate a new line table. */ | |
ecfd2b60 JK |
390 | newLineTb = (struct linetable *) |
391 | xmalloc | |
392 | (sizeof (struct linetable) + | |
393 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
818de002 PB |
394 | |
395 | /* if line table does not start with a function beginning, copy up until | |
396 | a function begin. */ | |
397 | ||
398 | newline = 0; | |
399 | if (oldLineTb->item[0].line != 0) | |
400 | for (newline=0; | |
401 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
402 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
403 | ||
404 | /* Now copy function lines one by one. */ | |
405 | ||
406 | for (ii=0; ii < function_count; ++ii) { | |
407 | for (jj = fentry[ii].line + 1; | |
408 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
409 | ++jj, ++newline) | |
410 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
411 | } | |
412 | free (fentry); | |
413 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
414 | return newLineTb; | |
415 | } | |
416 | ||
417 | ||
418 | ||
419 | /* We try to detect the beginning of a compilation unit. That info will | |
420 | be used as an entry in line number recording routines (enter_line_range) */ | |
421 | ||
422 | static unsigned first_fun_line_offset; | |
423 | static unsigned first_fun_bf; | |
424 | ||
425 | #define mark_first_line(OFFSET, SYMNUM) \ | |
426 | if (!first_fun_line_offset) { \ | |
427 | first_fun_line_offset = OFFSET; \ | |
428 | first_fun_bf = SYMNUM; \ | |
429 | } | |
430 | ||
431 | ||
432 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
433 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
434 | we will determine if we should create additional symtab's to | |
435 | represent if (the include files. */ | |
436 | ||
437 | ||
438 | typedef struct _inclTable { | |
439 | char *name; /* include filename */ | |
2aefe6e4 JK |
440 | |
441 | /* Offsets to the line table. end points to the last entry which is | |
442 | part of this include file. */ | |
443 | int begin, end; | |
444 | ||
818de002 PB |
445 | struct subfile *subfile; |
446 | unsigned funStartLine; /* start line # of its function */ | |
447 | } InclTable; | |
448 | ||
449 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
450 | static InclTable *inclTable; /* global include table */ | |
451 | static int inclIndx; /* last entry to table */ | |
452 | static int inclLength; /* table length */ | |
453 | static int inclDepth; /* nested include depth */ | |
454 | ||
7f4c8595 | 455 | static void allocate_include_entry PARAMS ((void)); |
818de002 PB |
456 | |
457 | static void | |
458 | record_include_begin (cs) | |
459 | struct coff_symbol *cs; | |
460 | { | |
818de002 | 461 | if (inclDepth) |
486b440e JK |
462 | { |
463 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
464 | of course, but in corresponding .s files.). */ | |
465 | ||
67240bb8 JK |
466 | /* This can happen with old versions of GCC. |
467 | GCC 2.3.3-930426 does not exhibit this on a test case which | |
468 | a user said produced the message for him. */ | |
b646b438 | 469 | static struct complaint msg = {"Nested C_BINCL symbols", 0, 0}; |
486b440e JK |
470 | complain (&msg); |
471 | } | |
818de002 PB |
472 | ++inclDepth; |
473 | ||
7f4c8595 | 474 | allocate_include_entry (); |
818de002 PB |
475 | |
476 | inclTable [inclIndx].name = cs->c_name; | |
477 | inclTable [inclIndx].begin = cs->c_value; | |
478 | } | |
479 | ||
818de002 PB |
480 | static void |
481 | record_include_end (cs) | |
482 | struct coff_symbol *cs; | |
483 | { | |
484 | InclTable *pTbl; | |
485 | ||
486 | if (inclDepth == 0) | |
486b440e | 487 | { |
b646b438 | 488 | static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; |
486b440e JK |
489 | complain (&msg); |
490 | } | |
818de002 | 491 | |
7f4c8595 SS |
492 | allocate_include_entry (); |
493 | ||
818de002 PB |
494 | pTbl = &inclTable [inclIndx]; |
495 | pTbl->end = cs->c_value; | |
496 | ||
497 | --inclDepth; | |
498 | ++inclIndx; | |
499 | } | |
500 | ||
7f4c8595 SS |
501 | static void |
502 | allocate_include_entry () | |
503 | { | |
504 | if (inclTable == NULL) | |
505 | { | |
506 | inclTable = (InclTable *) | |
507 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
508 | memset (inclTable, | |
509 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
510 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
511 | inclIndx = 0; | |
512 | } | |
513 | else if (inclIndx >= inclLength) | |
514 | { | |
515 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
516 | inclTable = (InclTable *) | |
517 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
518 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, | |
519 | '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
520 | } | |
521 | } | |
818de002 | 522 | |
7f4c8595 SS |
523 | /* given the start and end addresses of a compilation unit (or a csect, |
524 | at times) process its lines and create appropriate line vectors. */ | |
818de002 PB |
525 | |
526 | static void | |
527 | process_linenos (start, end) | |
528 | CORE_ADDR start, end; | |
529 | { | |
530 | char *pp; | |
531 | int offset, ii; | |
532 | ||
5cba5d26 JK |
533 | /* subfile structure for the main compilation unit. */ |
534 | struct subfile main_subfile; | |
818de002 | 535 | |
5cba5d26 JK |
536 | /* In the main source file, any time we see a function entry, we |
537 | reset this variable to function's absolute starting line number. | |
538 | All the following line numbers in the function are relative to | |
539 | this, and we record absolute line numbers in record_line(). */ | |
818de002 PB |
540 | |
541 | int main_source_baseline = 0; | |
542 | ||
818de002 PB |
543 | unsigned *firstLine; |
544 | CORE_ADDR addr; | |
545 | ||
546 | if (!(offset = first_fun_line_offset)) | |
547 | goto return_after_cleanup; | |
548 | ||
4ed97c9a | 549 | memset (&main_subfile, '\0', sizeof (main_subfile)); |
818de002 PB |
550 | first_fun_line_offset = 0; |
551 | ||
552 | if (inclIndx == 0) | |
556f3d90 PB |
553 | /* All source lines were in the main source file. None in include files. */ |
554 | ||
818de002 PB |
555 | enter_line_range (&main_subfile, offset, 0, start, end, |
556 | &main_source_baseline); | |
557 | ||
5cba5d26 JK |
558 | else |
559 | { | |
560 | /* There was source with line numbers in include files. */ | |
561 | main_source_baseline = 0; | |
562 | for (ii=0; ii < inclIndx; ++ii) | |
563 | { | |
564 | struct subfile *tmpSubfile; | |
818de002 | 565 | |
5cba5d26 JK |
566 | /* If there is main file source before include file, enter it. */ |
567 | if (offset < inclTable[ii].begin) | |
568 | { | |
569 | enter_line_range | |
570 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, | |
571 | start, 0, &main_source_baseline); | |
572 | } | |
818de002 | 573 | |
5cba5d26 | 574 | /* Have a new subfile for the include file. */ |
818de002 | 575 | |
5cba5d26 JK |
576 | tmpSubfile = inclTable[ii].subfile = |
577 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
818de002 | 578 | |
5cba5d26 JK |
579 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
580 | firstLine = &(inclTable[ii].funStartLine); | |
818de002 | 581 | |
5cba5d26 JK |
582 | /* Enter include file's lines now. */ |
583 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
584 | inclTable[ii].end, start, 0, firstLine); | |
818de002 | 585 | |
5cba5d26 JK |
586 | offset = inclTable[ii].end + LINESZ; |
587 | } | |
818de002 | 588 | |
5cba5d26 JK |
589 | /* All the include files' line have been processed at this point. Now, |
590 | enter remaining lines of the main file, if any left. */ | |
591 | if (offset < (linetab_offset + linetab_size + 1 - LINESZ)) | |
592 | { | |
593 | enter_line_range (&main_subfile, offset, 0, start, end, | |
594 | &main_source_baseline); | |
595 | } | |
818de002 PB |
596 | } |
597 | ||
5cba5d26 JK |
598 | /* Process main file's line numbers. */ |
599 | if (main_subfile.line_vector) | |
600 | { | |
601 | struct linetable *lineTb, *lv; | |
818de002 | 602 | |
5cba5d26 | 603 | lv = main_subfile.line_vector; |
818de002 | 604 | |
5cba5d26 JK |
605 | /* Line numbers are not necessarily ordered. xlc compilation will |
606 | put static function to the end. */ | |
818de002 | 607 | |
5cba5d26 JK |
608 | lineTb = arrange_linetable (lv); |
609 | if (lv == lineTb) | |
610 | { | |
611 | current_subfile->line_vector = (struct linetable *) | |
612 | xrealloc (lv, (sizeof (struct linetable) | |
613 | + lv->nitems * sizeof (struct linetable_entry))); | |
614 | } | |
615 | else | |
616 | { | |
617 | free (lv); | |
618 | current_subfile->line_vector = lineTb; | |
619 | } | |
818de002 | 620 | |
5cba5d26 JK |
621 | current_subfile->line_vector_length = |
622 | current_subfile->line_vector->nitems; | |
818de002 | 623 | } |
818de002 | 624 | |
5cba5d26 | 625 | /* Now, process included files' line numbers. */ |
818de002 | 626 | |
5cba5d26 JK |
627 | for (ii=0; ii < inclIndx; ++ii) |
628 | { | |
629 | if ((inclTable[ii].subfile)->line_vector) /* Useless if!!! FIXMEmgo */ | |
630 | { | |
631 | struct linetable *lineTb, *lv; | |
818de002 | 632 | |
5cba5d26 | 633 | lv = (inclTable[ii].subfile)->line_vector; |
818de002 | 634 | |
5cba5d26 JK |
635 | /* Line numbers are not necessarily ordered. xlc compilation will |
636 | put static function to the end. */ | |
818de002 | 637 | |
5cba5d26 | 638 | lineTb = arrange_linetable (lv); |
818de002 | 639 | |
5cba5d26 | 640 | push_subfile (); |
818de002 | 641 | |
5cba5d26 JK |
642 | /* For the same include file, we might want to have more than one |
643 | subfile. This happens if we have something like: | |
818de002 | 644 | |
818de002 PB |
645 | ...... |
646 | #include "foo.h" | |
647 | ...... | |
648 | #include "foo.h" | |
649 | ...... | |
650 | ||
5cba5d26 JK |
651 | while foo.h including code in it. (stupid but possible) |
652 | Since start_subfile() looks at the name and uses an | |
653 | existing one if finds, we need to provide a fake name and | |
654 | fool it. */ | |
655 | ||
656 | #if 0 | |
657 | start_subfile (inclTable[ii].name, (char*)0); | |
658 | #else | |
659 | { | |
660 | /* Pick a fake name that will produce the same results as this | |
661 | one when passed to deduce_language_from_filename. Kludge on | |
662 | top of kludge. */ | |
663 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
664 | if (fakename == NULL) | |
665 | fakename = " ?"; | |
666 | start_subfile (fakename, (char*)0); | |
667 | free (current_subfile->name); | |
668 | } | |
669 | current_subfile->name = strdup (inclTable[ii].name); | |
670 | #endif | |
818de002 | 671 | |
5cba5d26 JK |
672 | if (lv == lineTb) |
673 | { | |
674 | current_subfile->line_vector = | |
675 | (struct linetable *) xrealloc | |
676 | (lv, (sizeof (struct linetable) | |
818de002 PB |
677 | + lv->nitems * sizeof (struct linetable_entry))); |
678 | ||
5cba5d26 JK |
679 | } |
680 | else | |
681 | { | |
682 | free (lv); | |
683 | current_subfile->line_vector = lineTb; | |
684 | } | |
818de002 | 685 | |
5cba5d26 JK |
686 | current_subfile->line_vector_length = |
687 | current_subfile->line_vector->nitems; | |
688 | start_subfile (pop_subfile (), (char*)0); | |
689 | } | |
818de002 | 690 | } |
818de002 | 691 | |
5cba5d26 | 692 | return_after_cleanup: |
818de002 | 693 | |
5cba5d26 | 694 | /* We don't want to keep alloc/free'ing the global include file table. */ |
818de002 PB |
695 | inclIndx = 0; |
696 | ||
5cba5d26 | 697 | /* Start with a fresh subfile structure for the next file. */ |
4ed97c9a | 698 | memset (&main_subfile, '\0', sizeof (struct subfile)); |
818de002 PB |
699 | } |
700 | ||
701 | void | |
702 | aix_process_linenos () | |
703 | { | |
704 | /* process line numbers and enter them into line vector */ | |
705 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
706 | } | |
707 | ||
708 | ||
e38e0312 JG |
709 | /* Enter a given range of lines into the line vector. |
710 | can be called in the following two ways: | |
818de002 | 711 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
2aefe6e4 JK |
712 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) |
713 | ||
714 | endoffset points to the last line table entry that we should pay | |
715 | attention to. */ | |
e38e0312 JG |
716 | |
717 | static void | |
818de002 PB |
718 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine) |
719 | struct subfile *subfile; | |
e38e0312 | 720 | unsigned beginoffset, endoffset; /* offsets to line table */ |
818de002 | 721 | CORE_ADDR startaddr, endaddr; |
e38e0312 JG |
722 | unsigned *firstLine; |
723 | { | |
724 | char *pp, *limit; | |
725 | CORE_ADDR addr; | |
818de002 PB |
726 | |
727 | /* Do Byte swapping, if needed. FIXME! */ | |
728 | #define P_LINENO(PP) (*(unsigned short*)((struct external_lineno*)(PP))->l_lnno) | |
729 | #define P_LINEADDR(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_paddr) | |
730 | #define P_LINESYM(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_symndx) | |
e38e0312 JG |
731 | |
732 | pp = &linetab [beginoffset - linetab_offset]; | |
2aefe6e4 JK |
733 | if (endoffset != 0 && endoffset - linetab_offset >= linetab_size) |
734 | { | |
735 | static struct complaint msg = | |
736 | {"Bad line table offset in C_EINCL directive", 0, 0}; | |
737 | complain (&msg); | |
738 | return; | |
739 | } | |
e38e0312 JG |
740 | limit = endoffset ? &linetab [endoffset - linetab_offset] |
741 | : &linetab [linetab_size -1]; | |
742 | ||
743 | while (pp <= limit) { | |
744 | ||
e38e0312 | 745 | /* find the address this line represents */ |
818de002 | 746 | addr = P_LINENO(pp) ? |
c84a96d7 | 747 | P_LINEADDR(pp) : read_symbol_nvalue (P_LINESYM(pp)); |
e38e0312 | 748 | |
b60b2e3e | 749 | if (addr < startaddr || (endaddr && addr >= endaddr)) |
e38e0312 JG |
750 | return; |
751 | ||
818de002 | 752 | if (P_LINENO(pp) == 0) { |
c84a96d7 | 753 | *firstLine = read_symbol_lineno (P_LINESYM(pp)); |
818de002 | 754 | record_line (subfile, 0, addr); |
e38e0312 JG |
755 | --(*firstLine); |
756 | } | |
757 | else | |
818de002 PB |
758 | record_line (subfile, *firstLine + P_LINENO(pp), addr); |
759 | ||
760 | pp += LINESZ; | |
761 | } | |
762 | } | |
763 | ||
764 | typedef struct { | |
765 | int fsize; /* file size */ | |
766 | int fixedparms; /* number of fixed parms */ | |
767 | int floatparms; /* number of float parms */ | |
768 | unsigned int parminfo; /* parameter info. | |
769 | See /usr/include/sys/debug.h | |
770 | tbtable_ext.parminfo */ | |
771 | int framesize; /* function frame size */ | |
772 | } TracebackInfo; | |
773 | ||
774 | ||
775 | /* Given a function symbol, return its traceback information. */ | |
776 | ||
777 | TracebackInfo * | |
778 | retrieve_tracebackinfo (abfd, textsec, cs) | |
779 | bfd *abfd; | |
780 | sec_ptr textsec; | |
781 | struct coff_symbol *cs; | |
782 | { | |
783 | #define TBTABLE_BUFSIZ 2000 | |
818de002 PB |
784 | |
785 | static TracebackInfo tbInfo; | |
786 | struct tbtable *ptb; | |
787 | ||
788 | static char buffer [TBTABLE_BUFSIZ]; | |
789 | ||
790 | int *pinsn; | |
791 | int bytesread=0; /* total # of bytes read so far */ | |
792 | int bufferbytes; /* number of bytes in the buffer */ | |
793 | ||
794 | int functionstart = cs->c_value - textsec->vma; | |
795 | ||
4ed97c9a | 796 | memset (&tbInfo, '\0', sizeof (tbInfo)); |
818de002 PB |
797 | |
798 | /* keep reading blocks of data from the text section, until finding a zero | |
799 | word and a traceback table. */ | |
800 | ||
2aefe6e4 JK |
801 | /* Note: The logical thing way to write this code would be to assign |
802 | to bufferbytes within the while condition. But that triggers a | |
803 | compiler (xlc in AIX 3.2) bug, so simplify it... */ | |
804 | bufferbytes = | |
805 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
806 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
807 | while (bufferbytes | |
808 | && (bfd_get_section_contents | |
809 | (abfd, textsec, buffer, | |
810 | (file_ptr)(functionstart + bytesread), bufferbytes))) | |
818de002 PB |
811 | { |
812 | bytesread += bufferbytes; | |
813 | pinsn = (int*) buffer; | |
814 | ||
815 | /* if this is the first time we filled the buffer, retrieve function | |
816 | framesize info. */ | |
817 | ||
818 | if (bytesread == bufferbytes) { | |
819 | ||
820 | /* skip over unrelated instructions */ | |
821 | ||
822 | if (*pinsn == 0x7c0802a6) /* mflr r0 */ | |
823 | ++pinsn; | |
824 | if ((*pinsn & 0xfc00003e) == 0x7c000026) /* mfcr Rx */ | |
825 | ++pinsn; | |
826 | if ((*pinsn & 0xfc000000) == 0x48000000) /* bl foo, save fprs */ | |
827 | ++pinsn; | |
828 | if ((*pinsn & 0xfc1f0000) == 0xbc010000) /* stm Rx, NUM(r1) */ | |
829 | ++pinsn; | |
830 | ||
831 | do { | |
832 | int tmp = (*pinsn >> 16) & 0xffff; | |
833 | ||
834 | if (tmp == 0x9421) { /* stu r1, NUM(r1) */ | |
835 | tbInfo.framesize = 0x10000 - (*pinsn & 0xffff); | |
836 | break; | |
837 | } | |
838 | else if ((*pinsn == 0x93e1fffc) || /* st r31,-4(r1) */ | |
839 | (tmp == 0x9001)) /* st r0, NUM(r1) */ | |
840 | ; | |
841 | /* else, could not find a frame size. */ | |
842 | else | |
843 | return NULL; | |
844 | ||
845 | } while (++pinsn && *pinsn); | |
846 | ||
847 | if (!tbInfo.framesize) | |
848 | return NULL; | |
2aefe6e4 | 849 | |
818de002 PB |
850 | } |
851 | ||
852 | /* look for a zero word. */ | |
853 | ||
854 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
855 | ++pinsn; | |
856 | ||
857 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
858 | continue; | |
e38e0312 | 859 | |
818de002 PB |
860 | if (*pinsn == 0) { |
861 | ||
862 | /* function size is the amount of bytes we have skipped so far. */ | |
863 | tbInfo.fsize = bytesread - (buffer + bufferbytes - (char*)pinsn); | |
864 | ||
865 | ++pinsn; | |
866 | ||
867 | /* if we don't have the whole traceback table in the buffer, re-read | |
868 | the whole thing. */ | |
869 | ||
3e57da38 JK |
870 | /* This is how much to read to get the traceback table. |
871 | 8 bytes of the traceback table are always present, plus we | |
872 | look at parminfo. */ | |
873 | #define MIN_TBTABSIZ 12 | |
874 | ||
818de002 PB |
875 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { |
876 | ||
877 | /* In case if we are *very* close to the end of the text section | |
878 | and cannot read properly from that point on, abort by returning | |
879 | NULL. | |
3e57da38 JK |
880 | |
881 | This could happen if the traceback table is only 8 bytes, | |
882 | but we try to read 12 bytes of it. | |
818de002 PB |
883 | Handle this case more graciously -- FIXME */ |
884 | ||
885 | if (!bfd_get_section_contents ( | |
886 | abfd, textsec, buffer, | |
887 | (file_ptr)(functionstart + | |
888 | bytesread - (buffer + bufferbytes - (char*)pinsn)),MIN_TBTABSIZ)) | |
199b2450 | 889 | { printf_unfiltered ("Abnormal return!..\n"); return NULL; } |
818de002 PB |
890 | |
891 | ptb = (struct tbtable *)buffer; | |
892 | } | |
893 | else | |
894 | ptb = (struct tbtable *)pinsn; | |
895 | ||
896 | tbInfo.fixedparms = ptb->tb.fixedparms; | |
897 | tbInfo.floatparms = ptb->tb.floatparms; | |
898 | tbInfo.parminfo = ptb->tb_ext.parminfo; | |
899 | return &tbInfo; | |
900 | } | |
2aefe6e4 JK |
901 | bufferbytes = |
902 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
903 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
818de002 PB |
904 | } |
905 | return NULL; | |
906 | } | |
907 | ||
908 | #if 0 | |
909 | /* Given a function symbol, return a pointer to its traceback table. */ | |
910 | ||
911 | struct tbtable * | |
912 | retrieve_traceback (abfd, textsec, cs, size) | |
913 | bfd *abfd; | |
914 | sec_ptr textsec; | |
915 | struct coff_symbol *cs; | |
916 | int *size; /* return function size */ | |
917 | { | |
918 | #define TBTABLE_BUFSIZ 2000 | |
919 | #define MIN_TBTABSIZ 50 /* minimum buffer size to hold a | |
920 | traceback table. */ | |
921 | ||
922 | static char buffer [TBTABLE_BUFSIZ]; | |
923 | ||
924 | int *pinsn; | |
925 | int bytesread=0; /* total # of bytes read so far */ | |
926 | int bufferbytes; /* number of bytes in the buffer */ | |
927 | ||
928 | int functionstart = cs->c_value - textsec->filepos + textsec->vma; | |
929 | *size = 0; | |
930 | ||
931 | /* keep reading blocks of data from the text section, until finding a zero | |
932 | word and a traceback table. */ | |
933 | ||
934 | while (bfd_get_section_contents (abfd, textsec, buffer, | |
935 | (file_ptr)(functionstart + bytesread), | |
936 | bufferbytes = ( | |
937 | (TBTABLE_BUFSIZ < (textsec->size - functionstart - bytesread)) ? | |
938 | TBTABLE_BUFSIZ : (textsec->size - functionstart - bytesread)))) | |
939 | { | |
940 | bytesread += bufferbytes; | |
941 | pinsn = (int*) buffer; | |
942 | ||
943 | /* look for a zero word. */ | |
944 | ||
945 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
946 | ++pinsn; | |
947 | ||
948 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
949 | continue; | |
950 | ||
951 | if (*pinsn == 0) { | |
952 | ||
953 | /* function size is the amount of bytes we have skipped so far. */ | |
954 | *size = bytesread - (buffer + bufferbytes - pinsn); | |
955 | ||
956 | ++pinsn; | |
957 | ||
958 | /* if we don't have the whole traceback table in the buffer, re-read | |
959 | the whole thing. */ | |
960 | ||
961 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { | |
962 | ||
963 | /* In case if we are *very* close to the end of the text section | |
964 | and cannot read properly from that point on, abort for now. | |
965 | Handle this case more graciously -- FIXME */ | |
966 | ||
967 | if (!bfd_get_section_contents ( | |
968 | abfd, textsec, buffer, | |
969 | (file_ptr)(functionstart + | |
970 | bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ)) | |
199b2450 | 971 | /* abort (); */ { printf_unfiltered ("abort!!!\n"); return NULL; } |
818de002 PB |
972 | |
973 | return (struct tbtable *)buffer; | |
974 | } | |
975 | else | |
976 | return (struct tbtable *)pinsn; | |
977 | } | |
e38e0312 | 978 | } |
818de002 | 979 | return NULL; |
e38e0312 | 980 | } |
818de002 PB |
981 | #endif /* 0 */ |
982 | ||
983 | ||
e38e0312 JG |
984 | |
985 | ||
986 | /* Save the vital information for use when closing off the current file. | |
987 | NAME is the file name the symbols came from, START_ADDR is the first | |
988 | text address for the file, and SIZE is the number of bytes of text. */ | |
989 | ||
990 | #define complete_symtab(name, start_addr) { \ | |
991 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 992 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
993 | } |
994 | ||
995 | ||
996 | /* Refill the symbol table input buffer | |
997 | and set the variables that control fetching entries from it. | |
998 | Reports an error if no data available. | |
999 | This function can read past the end of the symbol table | |
1000 | (into the string table) but this does no harm. */ | |
1001 | ||
1002 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
1003 | than functions. */ | |
1004 | ||
8d60affd | 1005 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED, SECTION, OBJFILE) \ |
e38e0312 JG |
1006 | { \ |
1007 | char *namestr; \ | |
a81ce07d JK |
1008 | namestr = (NAME); \ |
1009 | if (namestr[0] == '.') ++namestr; \ | |
1010 | if (!(ALLOCED)) { \ | |
1eeba686 | 1011 | (NAME) = namestr = \ |
a81ce07d | 1012 | obstack_copy0 (&objfile->symbol_obstack, namestr, strlen (namestr)); \ |
e38e0312 JG |
1013 | (ALLOCED) = 1; \ |
1014 | } \ | |
3c02636b | 1015 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ |
8d60affd | 1016 | (char *)NULL, (SECTION), (OBJFILE)); \ |
818de002 | 1017 | misc_func_recorded = 1; \ |
e38e0312 JG |
1018 | } |
1019 | ||
1020 | ||
e5eeaaf8 JG |
1021 | /* A parameter template, used by ADD_PARM_TO_PENDING. It is initialized |
1022 | in our initializer function at the bottom of the file, to avoid | |
1023 | dependencies on the exact "struct symbol" format. */ | |
818de002 | 1024 | |
e5eeaaf8 | 1025 | static struct symbol parmsym; |
818de002 PB |
1026 | |
1027 | /* Add a parameter to a given pending symbol list. */ | |
1028 | ||
1029 | #define ADD_PARM_TO_PENDING(PARM, VALUE, PTYPE, PENDING_SYMBOLS) \ | |
1030 | { \ | |
1031 | PARM = (struct symbol *) \ | |
1032 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ | |
1033 | *(PARM) = parmsym; \ | |
1034 | SYMBOL_TYPE (PARM) = PTYPE; \ | |
1035 | SYMBOL_VALUE (PARM) = VALUE; \ | |
1036 | add_symbol_to_list (PARM, &PENDING_SYMBOLS); \ | |
1037 | } | |
1038 | ||
e38e0312 | 1039 | |
9b280a7f | 1040 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
1041 | nested. At any given time, a symbol can only be in one static block. |
1042 | This is the base address of current static block, zero if non exists. */ | |
1043 | ||
1044 | static int static_block_base = 0; | |
1045 | ||
3c02636b JK |
1046 | /* Section number for the current static block. */ |
1047 | ||
1048 | static int static_block_section = -1; | |
1049 | ||
e38e0312 JG |
1050 | /* true if space for symbol name has been allocated. */ |
1051 | ||
1052 | static int symname_alloced = 0; | |
1053 | ||
34d265dc JK |
1054 | /* Next symbol to read. Pointer into raw seething symbol table. */ |
1055 | ||
1056 | static char *raw_symbol; | |
1057 | ||
1058 | /* This is the function which stabsread.c calls to get symbol | |
1059 | continuations. */ | |
1060 | static char * | |
1061 | xcoff_next_symbol_text () | |
1062 | { | |
1063 | struct internal_syment symbol; | |
1064 | static struct complaint msg = | |
1065 | {"Unexpected symbol continuation", 0, 0}; | |
963dbabe | 1066 | char *retval; |
34d265dc JK |
1067 | |
1068 | bfd_coff_swap_sym_in (current_objfile->obfd, raw_symbol, &symbol); | |
afbdbbd7 | 1069 | if (symbol.n_zeroes) |
963dbabe JK |
1070 | { |
1071 | complain (&msg); | |
1072 | ||
1073 | /* Return something which points to '\0' and hope the symbol reading | |
1074 | code does something reasonable. */ | |
1075 | retval = ""; | |
1076 | } | |
afbdbbd7 | 1077 | else if (symbol.n_sclass & 0x80) |
963dbabe JK |
1078 | { |
1079 | retval = debugsec + symbol.n_offset; | |
1080 | raw_symbol += coff_data (current_objfile->obfd)->local_symesz; | |
1081 | ++symnum; | |
1082 | } | |
34d265dc | 1083 | else |
963dbabe JK |
1084 | { |
1085 | complain (&msg); | |
1086 | ||
1087 | /* Return something which points to '\0' and hope the symbol reading | |
1088 | code does something reasonable. */ | |
1089 | retval = ""; | |
1090 | } | |
1091 | return retval; | |
34d265dc JK |
1092 | } |
1093 | ||
e38e0312 JG |
1094 | /* read the whole symbol table of a given bfd. */ |
1095 | ||
1ab3bf1b | 1096 | static void |
e38e0312 JG |
1097 | read_xcoff_symtab (objfile, nsyms) |
1098 | struct objfile *objfile; /* Object file we're reading from */ | |
1099 | int nsyms; /* # of symbols */ | |
1100 | { | |
1101 | bfd *abfd = objfile->obfd; | |
e38e0312 | 1102 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ |
818de002 PB |
1103 | sec_ptr textsec; /* Pointer to text section */ |
1104 | TracebackInfo *ptb; /* Pointer to traceback table */ | |
1105 | ||
e38e0312 | 1106 | struct internal_syment symbol[1]; |
6657a0c7 | 1107 | union internal_auxent main_aux; |
e38e0312 JG |
1108 | struct coff_symbol cs[1]; |
1109 | CORE_ADDR file_start_addr = 0; | |
1110 | CORE_ADDR file_end_addr = 0; | |
1111 | ||
1112 | int next_file_symnum = -1; | |
1113 | int just_started = 1; | |
1114 | int depth = 0; | |
556f3d90 | 1115 | int toc_offset = 0; /* toc offset value in data section. */ |
e38e0312 | 1116 | int val; |
e38e0312 JG |
1117 | int fcn_last_line; |
1118 | int fcn_start_addr; | |
1119 | long fcn_line_offset; | |
1120 | size_t size; | |
1121 | ||
1eeba686 PB |
1122 | struct coff_symbol fcn_stab_saved; |
1123 | ||
e38e0312 JG |
1124 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
1125 | union internal_auxent fcn_aux_saved; | |
818de002 | 1126 | struct type *fcn_type_saved = NULL; |
e38e0312 JG |
1127 | struct context_stack *new; |
1128 | ||
1129 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
1130 | |
1131 | char *last_csect_name; /* last seen csect's name and value */ | |
1132 | CORE_ADDR last_csect_val; | |
3c02636b | 1133 | int last_csect_sec; |
818de002 | 1134 | int misc_func_recorded; /* true if any misc. function */ |
e38e0312 | 1135 | |
1ab3bf1b JG |
1136 | current_objfile = objfile; |
1137 | ||
a81ce07d JK |
1138 | /* Get the appropriate COFF "constants" related to the file we're |
1139 | handling. */ | |
e38e0312 JG |
1140 | N_TMASK = coff_data (abfd)->local_n_tmask; |
1141 | N_BTSHFT = coff_data (abfd)->local_n_btshft; | |
1142 | local_symesz = coff_data (abfd)->local_symesz; | |
1143 | ||
d07734e3 | 1144 | last_source_file = NULL; |
818de002 PB |
1145 | last_csect_name = 0; |
1146 | last_csect_val = 0; | |
1147 | misc_func_recorded = 0; | |
e38e0312 | 1148 | |
d07734e3 | 1149 | start_stabs (); |
e38e0312 JG |
1150 | start_symtab (filestring, (char *)NULL, file_start_addr); |
1151 | symnum = 0; | |
1152 | first_object_file_end = 0; | |
1153 | ||
1154 | /* Allocate space for the entire symbol table at once, and read it | |
1155 | all in. The bfd is already positioned at the beginning of | |
1156 | the symbol table. */ | |
1157 | ||
1158 | size = coff_data (abfd)->local_symesz * nsyms; | |
1159 | symtbl = xmalloc (size); | |
c84a96d7 | 1160 | symtbl_num_syms = nsyms; |
e38e0312 JG |
1161 | |
1162 | val = bfd_read (symtbl, size, 1, abfd); | |
1163 | if (val != size) | |
1164 | perror_with_name ("reading symbol table"); | |
1165 | ||
1166 | raw_symbol = symtbl; | |
1167 | ||
818de002 | 1168 | textsec = bfd_get_section_by_name (abfd, ".text"); |
a81ce07d JK |
1169 | if (!textsec) |
1170 | { | |
1171 | printf_unfiltered ("Unable to locate text section!\n"); | |
1172 | } | |
818de002 | 1173 | |
34d265dc JK |
1174 | next_symbol_text_func = xcoff_next_symbol_text; |
1175 | ||
a81ce07d JK |
1176 | while (symnum < nsyms) |
1177 | { | |
e38e0312 | 1178 | |
a81ce07d | 1179 | QUIT; /* make this command interruptable. */ |
e38e0312 | 1180 | |
a81ce07d JK |
1181 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ |
1182 | /* read one symbol into `cs' structure. After processing the | |
1183 | whole symbol table, only string table will be kept in memory, | |
1184 | symbol table and debug section of xcoff will be freed. Thus | |
1185 | we can mark symbols with names in string table as | |
1186 | `alloced'. */ | |
1187 | { | |
1188 | int ii; | |
1189 | ||
1190 | /* Swap and align the symbol into a reasonable C structure. */ | |
1191 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1192 | ||
1193 | cs->c_symnum = symnum; | |
1194 | cs->c_naux = symbol->n_numaux; | |
1195 | if (symbol->n_zeroes) | |
786757a9 | 1196 | { |
a81ce07d JK |
1197 | symname_alloced = 0; |
1198 | /* We must use the original, unswapped, name here so the name field | |
1199 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1200 | we use the new field, it gets overwritten for each symbol. */ | |
1201 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
1202 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
1203 | '\0'-terminated. */ | |
1204 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1205 | { | |
1206 | char *p; | |
1207 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); | |
1208 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1209 | p[E_SYMNMLEN] = '\0'; | |
1210 | cs->c_name = p; | |
1211 | symname_alloced = 1; | |
1212 | } | |
1213 | } | |
1214 | else if (symbol->n_sclass & 0x80) | |
1215 | { | |
1216 | cs->c_name = debugsec + symbol->n_offset; | |
1217 | symname_alloced = 0; | |
1218 | } | |
1219 | else | |
1220 | { | |
1221 | /* in string table */ | |
1222 | cs->c_name = strtbl + (int)symbol->n_offset; | |
786757a9 JK |
1223 | symname_alloced = 1; |
1224 | } | |
a81ce07d JK |
1225 | cs->c_value = symbol->n_value; |
1226 | cs->c_sclass = symbol->n_sclass; | |
1227 | cs->c_secnum = symbol->n_scnum; | |
1228 | cs->c_type = (unsigned)symbol->n_type; | |
e38e0312 | 1229 | |
a81ce07d JK |
1230 | raw_symbol += coff_data (abfd)->local_symesz; |
1231 | ++symnum; | |
e38e0312 | 1232 | |
a81ce07d JK |
1233 | /* Save addr of first aux entry. */ |
1234 | raw_auxptr = raw_symbol; | |
e38e0312 | 1235 | |
a81ce07d JK |
1236 | /* Skip all the auxents associated with this symbol. */ |
1237 | for (ii = symbol->n_numaux; ii; --ii) | |
1238 | { | |
1239 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1240 | ++symnum; | |
1241 | } | |
e38e0312 | 1242 | } |
e38e0312 | 1243 | |
a81ce07d JK |
1244 | /* if symbol name starts with ".$" or "$", ignore it. */ |
1245 | if (cs->c_name[0] == '$' | |
1246 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1247 | continue; | |
e38e0312 | 1248 | |
a81ce07d | 1249 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) |
d07734e3 | 1250 | { |
a81ce07d JK |
1251 | if (last_source_file) |
1252 | { | |
e2adc41a | 1253 | end_symtab (cur_src_end_addr, 1, 0, objfile, SECT_OFF_TEXT); |
a81ce07d JK |
1254 | end_stabs (); |
1255 | } | |
e38e0312 | 1256 | |
a81ce07d JK |
1257 | start_stabs (); |
1258 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); | |
1259 | cur_src_end_addr = first_object_file_end; | |
1260 | /* done with all files, everything from here on is globals */ | |
1261 | } | |
e38e0312 | 1262 | |
a81ce07d JK |
1263 | /* if explicitly specified as a function, treat is as one. */ |
1264 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) | |
1265 | { | |
1266 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1267 | 0, cs->c_naux, &main_aux); | |
1268 | goto function_entry_point; | |
1269 | } | |
e38e0312 | 1270 | |
a81ce07d JK |
1271 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1272 | && cs->c_naux == 1) | |
1273 | { | |
1274 | /* Dealing with a symbol with a csect entry. */ | |
e38e0312 | 1275 | |
a81ce07d JK |
1276 | #define CSECT(PP) ((PP)->x_csect) |
1277 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1278 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1279 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1280 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
e38e0312 | 1281 | |
a81ce07d JK |
1282 | /* Convert the auxent to something we can access. */ |
1283 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1284 | 0, cs->c_naux, &main_aux); | |
e38e0312 | 1285 | |
a81ce07d JK |
1286 | switch (CSECT_SMTYP (&main_aux)) |
1287 | { | |
e38e0312 | 1288 | |
a81ce07d JK |
1289 | case XTY_ER: |
1290 | /* Ignore all external references. */ | |
1291 | continue; | |
e38e0312 | 1292 | |
a81ce07d JK |
1293 | case XTY_SD: |
1294 | /* A section description. */ | |
e38e0312 | 1295 | { |
a81ce07d JK |
1296 | switch (CSECT_SCLAS (&main_aux)) |
1297 | { | |
1298 | ||
1299 | case XMC_PR: | |
1300 | { | |
1301 | ||
1302 | /* A program csect is seen. We have to allocate one | |
1303 | symbol table for each program csect. Normally gdb | |
1304 | prefers one symtab for each source file. In case | |
1305 | of AIX, one source file might include more than one | |
1306 | [PR] csect, and they don't have to be adjacent in | |
1307 | terms of the space they occupy in memory. Thus, one | |
1308 | single source file might get fragmented in the | |
1309 | memory and gdb's file start and end address | |
1310 | approach does not work! GCC (and I think xlc) seem | |
1311 | to put all the code in the unnamed program csect. */ | |
1312 | ||
1313 | if (last_csect_name) | |
1314 | { | |
1315 | ||
1316 | /* If no misc. function recorded in the last | |
1317 | seen csect, enter it as a function. This | |
1318 | will take care of functions like strcmp() | |
1319 | compiled by xlc. */ | |
1320 | ||
1321 | if (!misc_func_recorded) | |
1322 | { | |
1323 | int alloced = 0; | |
1324 | RECORD_MINIMAL_SYMBOL | |
1325 | (last_csect_name, last_csect_val, | |
1326 | mst_text, alloced, last_csect_sec, | |
1327 | objfile); | |
1328 | } | |
1329 | ||
1330 | complete_symtab (filestring, file_start_addr); | |
1331 | cur_src_end_addr = file_end_addr; | |
1332 | end_symtab (file_end_addr, 1, 0, objfile, | |
e2adc41a | 1333 | SECT_OFF_TEXT); |
a81ce07d JK |
1334 | end_stabs (); |
1335 | start_stabs (); | |
1336 | /* Give all csects for this source file the same | |
1337 | name. */ | |
1338 | start_symtab (filestring, NULL, (CORE_ADDR)0); | |
1339 | } | |
1340 | ||
1341 | /* If this is the very first csect seen, | |
1342 | basically `__start'. */ | |
1343 | if (just_started) | |
1344 | { | |
1345 | first_object_file_end | |
1346 | = cs->c_value + CSECT_LEN (&main_aux); | |
1347 | just_started = 0; | |
1348 | } | |
1349 | ||
1350 | file_start_addr = cs->c_value; | |
1351 | file_end_addr = cs->c_value + CSECT_LEN (&main_aux); | |
1352 | ||
1353 | if (cs->c_name && cs->c_name[0] == '.') | |
1354 | { | |
1355 | last_csect_name = cs->c_name; | |
1356 | last_csect_val = cs->c_value; | |
e2adc41a | 1357 | last_csect_sec = cs_to_section (cs, objfile); |
a81ce07d JK |
1358 | } |
1359 | } | |
1360 | misc_func_recorded = 0; | |
1361 | continue; | |
1362 | ||
1363 | case XMC_RW : | |
1364 | break; | |
1365 | ||
1366 | /* If the section is not a data description, | |
1367 | ignore it. Note that uninitialized data will | |
1368 | show up as XTY_CM/XMC_RW pair. */ | |
1369 | ||
1370 | case XMC_TC0: | |
1371 | if (toc_offset) | |
1372 | warning ("More than one xmc_tc0 symbol found."); | |
1373 | toc_offset = cs->c_value; | |
1374 | continue; | |
1375 | ||
1376 | case XMC_TC: | |
1377 | #ifdef STATIC_NODEBUG_VARS | |
1378 | /* We need to process these symbols if they are C_HIDEXT, | |
1379 | for static variables in files compiled without -g. */ | |
1380 | if (cs->c_sclass == C_HIDEXT) | |
1381 | break; | |
1382 | else | |
1383 | #endif | |
1384 | continue; | |
e38e0312 | 1385 | |
a81ce07d JK |
1386 | default: |
1387 | /* Ignore the symbol. */ | |
1388 | continue; | |
818de002 | 1389 | } |
e38e0312 | 1390 | } |
e38e0312 JG |
1391 | break; |
1392 | ||
a81ce07d JK |
1393 | case XTY_LD: |
1394 | ||
1395 | switch (CSECT_SCLAS (&main_aux)) | |
1396 | { | |
1397 | case XMC_PR: | |
1398 | /* a function entry point. */ | |
1399 | function_entry_point: | |
e2adc41a JK |
1400 | RECORD_MINIMAL_SYMBOL |
1401 | (cs->c_name, cs->c_value, mst_text, | |
1402 | symname_alloced, cs_to_section (cs, objfile), | |
1403 | objfile); | |
a81ce07d JK |
1404 | |
1405 | fcn_line_offset = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1406 | fcn_start_addr = cs->c_value; | |
1407 | ||
1408 | /* save the function header info, which will be used | |
1409 | when `.bf' is seen. */ | |
1410 | fcn_cs_saved = *cs; | |
1411 | fcn_aux_saved = main_aux; | |
1412 | ||
1413 | ptb = NULL; | |
1414 | ||
1415 | /* If function has two auxent, then debugging information is | |
1416 | already available for it. Process traceback table for | |
1417 | functions with only one auxent. */ | |
1418 | ||
1419 | if (cs->c_naux == 1) | |
1420 | ptb = retrieve_tracebackinfo (abfd, textsec, cs); | |
1421 | ||
1422 | else if (cs->c_naux != 2) | |
1423 | { | |
1424 | static struct complaint msg = | |
1425 | {"Expected one or two auxents for function", 0, 0}; | |
1426 | complain (&msg); | |
1427 | } | |
1428 | ||
1429 | /* If there is traceback info, create and add parameters | |
1430 | for it. */ | |
1431 | ||
1432 | if (ptb && (ptb->fixedparms || ptb->floatparms)) | |
1433 | { | |
1434 | ||
1435 | int parmcnt = ptb->fixedparms + ptb->floatparms; | |
1436 | char *parmcode = (char*) &ptb->parminfo; | |
1437 | ||
1438 | /* The link area is 0x18 bytes. */ | |
1439 | int parmvalue = ptb->framesize + 0x18; | |
1440 | unsigned int ii, mask; | |
1441 | ||
1442 | for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) | |
1443 | { | |
1444 | struct symbol *parm; | |
1445 | ||
1446 | if (ptb->parminfo & mask) | |
1447 | { | |
1448 | /* float or double */ | |
1449 | mask = mask >> 1; | |
1450 | if (ptb->parminfo & mask) | |
1451 | { | |
1452 | /* double parm */ | |
1453 | ADD_PARM_TO_PENDING | |
1454 | (parm, parmvalue, builtin_type_double, | |
1455 | local_symbols); | |
1456 | parmvalue += sizeof (double); | |
1457 | } | |
1458 | else | |
1459 | { | |
1460 | /* float parm */ | |
1461 | ADD_PARM_TO_PENDING | |
1462 | (parm, parmvalue, builtin_type_float, | |
1463 | local_symbols); | |
1464 | parmvalue += sizeof (float); | |
1465 | } | |
1466 | } | |
1467 | else | |
1468 | { | |
d1f14b46 JK |
1469 | static struct type *intparm_type; |
1470 | if (intparm_type == NULL) | |
1471 | { | |
1472 | ||
1473 | /* Create a type, which is a pointer | |
1474 | type (a kludge to make it print | |
1475 | in hex), but which has a name | |
1476 | indicating we don't know the real | |
1477 | type. */ | |
1478 | ||
1479 | intparm_type = | |
1480 | init_type | |
1481 | (TYPE_CODE_PTR, | |
1482 | TARGET_PTR_BIT / HOST_CHAR_BIT, | |
1483 | 0, | |
1484 | "<non-float parameter>", | |
1485 | NULL); | |
1486 | TYPE_TARGET_TYPE (intparm_type) = | |
1487 | builtin_type_void; | |
1488 | } | |
a81ce07d JK |
1489 | ADD_PARM_TO_PENDING |
1490 | (parm, parmvalue, | |
d1f14b46 | 1491 | intparm_type, |
a81ce07d JK |
1492 | local_symbols); |
1493 | parmvalue += sizeof (int); | |
1494 | } | |
1495 | mask = mask >> 1; | |
1496 | } | |
1497 | ||
1498 | /* Fake this as a function. Needed in | |
1499 | process_xcoff_symbol(). */ | |
1500 | cs->c_type = 32; | |
1501 | ||
1502 | finish_block | |
1503 | (process_xcoff_symbol (cs, objfile), &local_symbols, | |
1504 | pending_blocks, cs->c_value, | |
1505 | cs->c_value + ptb->fsize, objfile); | |
1506 | } | |
1507 | continue; | |
1508 | ||
1509 | case XMC_GL: | |
1510 | /* shared library function trampoline code entry point. */ | |
1511 | ||
1512 | /* record trampoline code entries as | |
1513 | mst_solib_trampoline symbol. When we lookup mst | |
1514 | symbols, we will choose mst_text over | |
1515 | mst_solib_trampoline. */ | |
1516 | RECORD_MINIMAL_SYMBOL | |
1517 | (cs->c_name, cs->c_value, | |
1518 | mst_solib_trampoline, | |
e2adc41a | 1519 | symname_alloced, cs_to_section (cs, objfile), objfile); |
a81ce07d JK |
1520 | continue; |
1521 | ||
1522 | case XMC_DS: | |
1523 | /* The symbols often have the same names as debug symbols for | |
1524 | functions, and confuse lookup_symbol. */ | |
1525 | continue; | |
1526 | ||
1527 | default: | |
1528 | /* xlc puts each variable in a separate csect, so we get | |
1529 | an XTY_SD for each variable. But gcc puts several | |
1530 | variables in a csect, so that each variable only gets | |
1531 | an XTY_LD. We still need to record them. This will | |
1532 | typically be XMC_RW; I suspect XMC_RO and XMC_BS might | |
1533 | be possible too. */ | |
1534 | break; | |
1535 | } | |
e38e0312 | 1536 | |
a81ce07d JK |
1537 | default: |
1538 | break; | |
e38e0312 | 1539 | } |
a81ce07d | 1540 | } |
e38e0312 | 1541 | |
a81ce07d JK |
1542 | switch (cs->c_sclass) |
1543 | { | |
e38e0312 | 1544 | |
a81ce07d | 1545 | case C_FILE: |
818de002 | 1546 | |
a81ce07d | 1547 | /* see if the last csect needs to be recorded. */ |
818de002 | 1548 | |
a81ce07d JK |
1549 | if (last_csect_name && !misc_func_recorded) |
1550 | { | |
818de002 | 1551 | |
a81ce07d JK |
1552 | /* If no misc. function recorded in the last seen csect, enter |
1553 | it as a function. This will take care of functions like | |
1554 | strcmp() compiled by xlc. */ | |
818de002 | 1555 | |
a81ce07d JK |
1556 | int alloced = 0; |
1557 | RECORD_MINIMAL_SYMBOL | |
1558 | (last_csect_name, last_csect_val, | |
1559 | mst_text, alloced, last_csect_sec, objfile); | |
1560 | } | |
818de002 | 1561 | |
a81ce07d JK |
1562 | /* c_value field contains symnum of next .file entry in table |
1563 | or symnum of first global after last .file. */ | |
818de002 | 1564 | |
a81ce07d | 1565 | next_file_symnum = cs->c_value; |
818de002 | 1566 | |
a81ce07d JK |
1567 | /* Complete symbol table for last object file containing |
1568 | debugging information. */ | |
818de002 | 1569 | |
a81ce07d JK |
1570 | /* Whether or not there was a csect in the previous file, we |
1571 | have to call `end_stabs' and `start_stabs' to reset | |
1572 | type_vector, line_vector, etc. structures. */ | |
818de002 | 1573 | |
a81ce07d JK |
1574 | complete_symtab (filestring, file_start_addr); |
1575 | cur_src_end_addr = file_end_addr; | |
e2adc41a | 1576 | end_symtab (file_end_addr, 1, 0, objfile, SECT_OFF_TEXT); |
a81ce07d | 1577 | end_stabs (); |
818de002 | 1578 | |
a81ce07d JK |
1579 | /* XCOFF, according to the AIX 3.2 documentation, puts the filename |
1580 | in cs->c_name. But xlc 1.3.0.2 has decided to do things the | |
1581 | standard COFF way and put it in the auxent. We use the auxent if | |
1582 | the symbol is ".file" and an auxent exists, otherwise use the symbol | |
1583 | itself. Simple enough. */ | |
1584 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) | |
1585 | { | |
1586 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1587 | 0, cs->c_naux, &main_aux); | |
1588 | filestring = coff_getfilename (&main_aux); | |
818de002 | 1589 | } |
a81ce07d JK |
1590 | else |
1591 | filestring = cs->c_name; | |
d4cedfe4 | 1592 | |
a81ce07d JK |
1593 | start_stabs (); |
1594 | start_symtab (filestring, (char *)NULL, (CORE_ADDR)0); | |
1595 | last_csect_name = 0; | |
507e4004 | 1596 | |
a81ce07d JK |
1597 | /* reset file start and end addresses. A compilation unit with no text |
1598 | (only data) should have zero file boundaries. */ | |
1599 | file_start_addr = file_end_addr = 0; | |
e38e0312 | 1600 | break; |
e38e0312 | 1601 | |
a81ce07d JK |
1602 | case C_FUN: |
1603 | fcn_stab_saved = *cs; | |
1604 | break; | |
e38e0312 | 1605 | |
a81ce07d JK |
1606 | case C_FCN: |
1607 | if (STREQ (cs->c_name, ".bf")) | |
1608 | { | |
818de002 | 1609 | |
a81ce07d JK |
1610 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1611 | 0, cs->c_naux, &main_aux); | |
818de002 | 1612 | |
a81ce07d | 1613 | within_function = 1; |
818de002 | 1614 | |
a81ce07d | 1615 | mark_first_line (fcn_line_offset, cs->c_symnum); |
818de002 | 1616 | |
a81ce07d | 1617 | new = push_context (0, fcn_start_addr); |
e38e0312 | 1618 | |
a81ce07d JK |
1619 | new->name = define_symbol |
1620 | (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile); | |
1621 | if (new->name != NULL) | |
e2adc41a | 1622 | SYMBOL_SECTION (new->name) = cs_to_section (cs, objfile); |
a81ce07d JK |
1623 | } |
1624 | else if (STREQ (cs->c_name, ".ef")) | |
1625 | { | |
e38e0312 | 1626 | |
a81ce07d JK |
1627 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1628 | 0, cs->c_naux, &main_aux); | |
1629 | ||
1630 | /* The value of .ef is the address of epilogue code; | |
1631 | not useful for gdb. */ | |
1632 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1633 | contains number of lines to '}' */ | |
1634 | ||
1635 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1636 | new = pop_context (); | |
f8203ed0 JK |
1637 | /* Stack must be empty now. */ |
1638 | if (context_stack_depth > 0 || new == NULL) | |
1639 | { | |
1640 | complain (&ef_complaint, cs->c_symnum); | |
1641 | within_function = 0; | |
1642 | break; | |
1643 | } | |
a81ce07d JK |
1644 | |
1645 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1646 | new->start_addr, | |
1647 | fcn_cs_saved.c_value + | |
1648 | fcn_aux_saved.x_sym.x_misc.x_fsize, objfile); | |
1649 | within_function = 0; | |
1650 | } | |
1651 | break; | |
818de002 | 1652 | |
a81ce07d JK |
1653 | case C_BSTAT: |
1654 | /* Begin static block. */ | |
1655 | { | |
1656 | struct internal_syment symbol; | |
e2adc41a | 1657 | struct coff_symbol csymbol; |
af8b7906 | 1658 | |
a81ce07d JK |
1659 | read_symbol (&symbol, cs->c_value); |
1660 | static_block_base = symbol.n_value; | |
e2adc41a JK |
1661 | csymbol.c_secnum = symbol.n_scnum; |
1662 | static_block_section = cs_to_section (&csymbol, objfile); | |
a81ce07d JK |
1663 | } |
1664 | break; | |
af8b7906 | 1665 | |
a81ce07d JK |
1666 | case C_ESTAT: |
1667 | /* End of static block. */ | |
1668 | static_block_base = 0; | |
1669 | static_block_section = -1; | |
1670 | break; | |
e38e0312 | 1671 | |
a81ce07d JK |
1672 | case C_ARG: |
1673 | case C_REGPARM: | |
f8203ed0 | 1674 | case C_REG: |
a81ce07d JK |
1675 | case C_TPDEF: |
1676 | case C_STRTAG: | |
1677 | case C_UNTAG: | |
1678 | case C_ENTAG: | |
f8203ed0 JK |
1679 | { |
1680 | static struct complaint msg = | |
1681 | {"Unrecognized storage class %d.", 0, 0}; | |
1682 | complain (&msg, cs->c_sclass); | |
1683 | } | |
a81ce07d | 1684 | break; |
e38e0312 | 1685 | |
a81ce07d JK |
1686 | case C_LABEL: |
1687 | case C_NULL: | |
1688 | /* Ignore these. */ | |
1689 | break; | |
e38e0312 | 1690 | |
a81ce07d JK |
1691 | /* This is wrong. These symbols are XMC_TC, which means that |
1692 | the value of the symbol is the address of the TOC entry, not | |
1693 | the address of the variable itself. */ | |
1694 | case C_HIDEXT: | |
76a457c0 | 1695 | #ifdef STATIC_NODEBUG_VARS |
a81ce07d JK |
1696 | { |
1697 | /* This is the only place that static variables show up in files | |
1698 | compiled without -g. External variables also have a C_EXT, | |
1699 | so that is why we record everything as mst_file_* here. */ | |
1700 | enum minimal_symbol_type ms_type; | |
1701 | CORE_ADDR tmpaddr; | |
1702 | int sec; | |
818de002 | 1703 | |
a81ce07d JK |
1704 | sec = cs_to_section (cs, objfile); |
1705 | tmpaddr = cs->c_value; | |
e38e0312 | 1706 | |
a81ce07d JK |
1707 | switch (sec) |
1708 | { | |
1709 | case SECT_OFF_TEXT: | |
1710 | case SECT_OFF_RODATA: | |
1711 | ms_type = mst_file_text; | |
1712 | break; | |
1713 | case SECT_OFF_DATA: | |
1714 | ms_type = mst_file_data; | |
1715 | break; | |
1716 | case SECT_OFF_BSS: | |
1717 | ms_type = mst_file_bss; | |
1718 | break; | |
1719 | default: | |
1720 | ms_type = mst_unknown; | |
1721 | break; | |
1722 | } | |
1723 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, ms_type, | |
e2adc41a | 1724 | symname_alloced, sec, objfile); |
a81ce07d JK |
1725 | } |
1726 | #endif /* STATIC_NODEBUG_VARS */ | |
1727 | break; | |
e38e0312 | 1728 | |
a81ce07d JK |
1729 | case C_BINCL: |
1730 | /* beginning of include file */ | |
1731 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1732 | order. Thus, when wee see them, we might not know enough info | |
1733 | to process them. Thus, we'll be saving them into a table | |
1734 | (inclTable) and postpone their processing. */ | |
e38e0312 | 1735 | |
a81ce07d JK |
1736 | record_include_begin (cs); |
1737 | break; | |
e38e0312 | 1738 | |
a81ce07d JK |
1739 | case C_EINCL: |
1740 | /* End of include file. */ | |
1741 | /* See the comment after case C_BINCL. */ | |
1742 | record_include_end (cs); | |
1743 | break; | |
1eeba686 | 1744 | |
a81ce07d JK |
1745 | case C_BLOCK: |
1746 | if (STREQ (cs->c_name, ".bb")) | |
1747 | { | |
1748 | depth++; | |
1749 | new = push_context (depth, cs->c_value); | |
1750 | } | |
1751 | else if (STREQ (cs->c_name, ".eb")) | |
1752 | { | |
1753 | new = pop_context (); | |
f8203ed0 JK |
1754 | if (depth-- != new->depth) |
1755 | { | |
1756 | complain (&eb_complaint, symnum); | |
1757 | break; | |
1758 | } | |
a81ce07d JK |
1759 | if (local_symbols && context_stack_depth > 0) |
1760 | { | |
1761 | /* Make a block for the local symbols within. */ | |
1762 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1763 | new->start_addr, cs->c_value, objfile); | |
1764 | } | |
1765 | local_symbols = new->locals; | |
1766 | } | |
1767 | break; | |
e38e0312 | 1768 | |
a81ce07d JK |
1769 | default: |
1770 | process_xcoff_symbol (cs, objfile); | |
1771 | break; | |
e38e0312 | 1772 | } |
e38e0312 JG |
1773 | } |
1774 | ||
e38e0312 | 1775 | if (last_source_file) |
d07734e3 | 1776 | { |
e2adc41a | 1777 | end_symtab (cur_src_end_addr, 1, 0, objfile, SECT_OFF_TEXT); |
d07734e3 FF |
1778 | end_stabs (); |
1779 | } | |
e38e0312 JG |
1780 | |
1781 | free (symtbl); | |
1ab3bf1b | 1782 | current_objfile = NULL; |
556f3d90 PB |
1783 | |
1784 | /* Record the toc offset value of this symbol table into ldinfo structure. | |
1785 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
1786 | this information would be file auxiliary header. */ | |
1787 | ||
e5eeaaf8 | 1788 | #ifndef FAKING_RS6000 |
556f3d90 | 1789 | xcoff_add_toc_to_loadinfo (toc_offset); |
e5eeaaf8 | 1790 | #endif |
e38e0312 JG |
1791 | } |
1792 | ||
1793 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1794 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1795 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1796 | *(SYMBOL2) = *(SYMBOL1); |
1797 | ||
1798 | ||
1799 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
1ab3bf1b | 1800 | (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME)); |
e38e0312 JG |
1801 | |
1802 | ||
a81ce07d JK |
1803 | static struct type *func_symbol_type; |
1804 | static struct type *var_symbol_type; | |
1805 | ||
e38e0312 JG |
1806 | /* process one xcoff symbol. */ |
1807 | ||
1808 | static struct symbol * | |
1ab3bf1b | 1809 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1810 | register struct coff_symbol *cs; |
1ab3bf1b | 1811 | struct objfile *objfile; |
e38e0312 JG |
1812 | { |
1813 | struct symbol onesymbol; | |
1814 | register struct symbol *sym = &onesymbol; | |
1815 | struct symbol *sym2 = NULL; | |
1816 | struct type *ttype; | |
1817 | char *name, *pp, *qq; | |
818de002 | 1818 | int struct_and_type_combined; |
6c6afbb9 | 1819 | int nameless; |
e38e0312 JG |
1820 | |
1821 | name = cs->c_name; | |
1822 | if (name[0] == '.') | |
1823 | ++name; | |
1824 | ||
4ed97c9a | 1825 | memset (sym, '\0', sizeof (struct symbol)); |
e38e0312 JG |
1826 | |
1827 | /* default assumptions */ | |
1828 | SYMBOL_VALUE (sym) = cs->c_value; | |
1829 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
e2adc41a | 1830 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
e38e0312 | 1831 | |
a81ce07d JK |
1832 | if (ISFCN (cs->c_type)) |
1833 | { | |
1834 | /* At this point, we don't know the type of the function. This | |
1835 | will be patched with the type from its stab entry later on in | |
1836 | patch_block_stabs (), unless the file was compiled without -g. */ | |
e38e0312 | 1837 | |
a81ce07d JK |
1838 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); |
1839 | SYMBOL_TYPE (sym) = func_symbol_type; | |
e38e0312 | 1840 | |
a81ce07d JK |
1841 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1842 | SYMBOL_DUP (sym, sym2); | |
e38e0312 | 1843 | |
a81ce07d JK |
1844 | if (cs->c_sclass == C_EXT) |
1845 | add_symbol_to_list (sym2, &global_symbols); | |
1846 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1847 | add_symbol_to_list (sym2, &file_symbols); | |
1848 | } | |
1849 | else | |
e38e0312 | 1850 | { |
a81ce07d JK |
1851 | /* In case we can't figure out the type, provide default. */ |
1852 | SYMBOL_TYPE (sym) = var_symbol_type; | |
1853 | ||
1854 | switch (cs->c_sclass) | |
1855 | { | |
818de002 | 1856 | #if 0 |
a81ce07d JK |
1857 | case C_FUN: |
1858 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1859 | add_stab_to_list (name, &global_stabs); | |
1860 | else | |
1861 | add_stab_to_list (name, &file_stabs); | |
1862 | break; | |
818de002 | 1863 | #endif |
e38e0312 | 1864 | |
a81ce07d JK |
1865 | case C_GSYM: |
1866 | add_stab_to_list (name, &global_stabs); | |
1867 | break; | |
e38e0312 | 1868 | |
a81ce07d JK |
1869 | case C_BCOMM: |
1870 | common_block_start (cs->c_name, objfile); | |
1871 | break; | |
9438d642 | 1872 | |
a81ce07d JK |
1873 | case C_ECOMM: |
1874 | common_block_end (objfile); | |
1875 | break; | |
9438d642 | 1876 | |
a81ce07d JK |
1877 | default: |
1878 | complain (&storclass_complaint, cs->c_sclass); | |
1879 | /* FALLTHROUGH */ | |
9438d642 | 1880 | |
a81ce07d JK |
1881 | case C_DECL: |
1882 | case C_PSYM: | |
1883 | case C_RPSYM: | |
1884 | case C_ECOML: | |
1eeba686 | 1885 | |
a81ce07d JK |
1886 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); |
1887 | if (sym != NULL) | |
1888 | { | |
e2adc41a | 1889 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1890 | } |
1891 | return sym; | |
e38e0312 | 1892 | |
a81ce07d | 1893 | case C_STSYM: |
1eeba686 | 1894 | |
a81ce07d JK |
1895 | /* For xlc (not GCC), the 'V' symbol descriptor is used for |
1896 | all statics and we need to distinguish file-scope versus | |
1897 | function-scope using within_function. We do this by | |
1898 | changing the string we pass to define_symbol to use 'S' | |
1899 | where we need to, which is not necessarily super-clean, | |
1900 | but seems workable enough. */ | |
91cc45da | 1901 | |
a81ce07d JK |
1902 | if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL) |
1903 | return NULL; | |
91cc45da | 1904 | |
a81ce07d JK |
1905 | ++pp; |
1906 | if (*pp == 'V' && !within_function) | |
1907 | *pp = 'S'; | |
1908 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1909 | if (sym != NULL) | |
1910 | { | |
1911 | SYMBOL_VALUE (sym) += static_block_base; | |
1912 | SYMBOL_SECTION (sym) = static_block_section; | |
1913 | } | |
1914 | return sym; | |
e38e0312 | 1915 | |
a81ce07d JK |
1916 | case C_LSYM: |
1917 | sym = define_symbol (cs->c_value, cs->c_name, 0, N_LSYM, objfile); | |
1918 | if (sym != NULL) | |
1919 | { | |
e2adc41a | 1920 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1921 | } |
1922 | return sym; | |
e38e0312 | 1923 | |
a81ce07d JK |
1924 | case C_AUTO: |
1925 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1926 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
e2adc41a | 1927 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1928 | SYMBOL_DUP (sym, sym2); |
1929 | add_symbol_to_list (sym2, &local_symbols); | |
1930 | break; | |
e38e0312 | 1931 | |
a81ce07d JK |
1932 | case C_EXT: |
1933 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1934 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
e2adc41a | 1935 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1936 | SYMBOL_DUP (sym, sym2); |
1937 | add_symbol_to_list (sym2, &global_symbols); | |
1938 | break; | |
e38e0312 | 1939 | |
a81ce07d JK |
1940 | case C_STAT: |
1941 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1942 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
e2adc41a | 1943 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1944 | SYMBOL_DUP (sym, sym2); |
1945 | add_symbol_to_list | |
1946 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1947 | break; | |
e38e0312 | 1948 | |
a81ce07d JK |
1949 | case C_RSYM: |
1950 | pp = (char*) strchr (name, ':'); | |
1951 | if (pp) | |
1952 | { | |
1953 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1954 | if (sym != NULL) | |
e2adc41a | 1955 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
a81ce07d JK |
1956 | return sym; |
1957 | } | |
1958 | else | |
1959 | { | |
1960 | complain (&rsym_complaint, name); | |
1961 | return NULL; | |
1962 | } | |
1eeba686 | 1963 | } |
e38e0312 | 1964 | } |
e38e0312 JG |
1965 | return sym2; |
1966 | } | |
1967 | ||
e8abe489 PS |
1968 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1969 | only the last component of the name. Result is in static storage and | |
1970 | is only good for temporary use. */ | |
1971 | ||
1972 | static char * | |
1973 | coff_getfilename (aux_entry) | |
1974 | union internal_auxent *aux_entry; | |
1975 | { | |
1976 | static char buffer[BUFSIZ]; | |
1977 | register char *temp; | |
1978 | char *result; | |
1979 | ||
1980 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1981 | strcpy (buffer, strtbl + aux_entry->x_file.x_n.x_offset); | |
1982 | else | |
1983 | { | |
1984 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1985 | buffer[FILNMLEN] = '\0'; | |
1986 | } | |
1987 | result = buffer; | |
1988 | ||
1989 | /* FIXME: We should not be throwing away the information about what | |
1990 | directory. It should go into dirname of the symtab, or some such | |
1991 | place. */ | |
1992 | if ((temp = strrchr (result, '/')) != NULL) | |
1993 | result = temp + 1; | |
1994 | return (result); | |
1995 | } | |
1996 | ||
3c02636b JK |
1997 | /* Set *SYMBOL to symbol number symno in symtbl. */ |
1998 | static void | |
1999 | read_symbol (symbol, symno) | |
2000 | struct internal_syment *symbol; | |
e38e0312 JG |
2001 | int symno; |
2002 | { | |
c84a96d7 JK |
2003 | if (symno < 0 || symno >= symtbl_num_syms) |
2004 | { | |
b646b438 | 2005 | static struct complaint msg = |
c84a96d7 JK |
2006 | {"Invalid symbol offset", 0, 0}; |
2007 | complain (&msg); | |
3c02636b JK |
2008 | symbol->n_value = 0; |
2009 | symbol->n_scnum = -1; | |
2010 | return; | |
c84a96d7 JK |
2011 | } |
2012 | bfd_coff_swap_sym_in (symfile_bfd, symtbl + (symno*local_symesz), symbol); | |
3c02636b JK |
2013 | } |
2014 | ||
2015 | /* Get value corresponding to symbol number symno in symtbl. */ | |
2016 | ||
2017 | static int | |
2018 | read_symbol_nvalue (symno) | |
2019 | int symno; | |
2020 | { | |
2021 | struct internal_syment symbol[1]; | |
2022 | ||
2023 | read_symbol (symbol, symno); | |
e38e0312 JG |
2024 | return symbol->n_value; |
2025 | } | |
2026 | ||
2027 | ||
c84a96d7 JK |
2028 | /* Find the address of the function corresponding to symno, where |
2029 | symno is the symbol pointed to by the linetable. */ | |
2030 | ||
e38e0312 | 2031 | static int |
c84a96d7 | 2032 | read_symbol_lineno (symno) |
e38e0312 JG |
2033 | int symno; |
2034 | { | |
2035 | struct internal_syment symbol[1]; | |
2036 | union internal_auxent main_aux[1]; | |
2037 | ||
c84a96d7 JK |
2038 | /* Note that just searching for a short distance (e.g. 50 symbols) |
2039 | is not enough, at least in the following case. | |
2040 | ||
2041 | .extern foo | |
2042 | [many .stabx entries] | |
2043 | [a few functions, referring to foo] | |
2044 | .globl foo | |
2045 | .bf | |
e38e0312 | 2046 | |
c84a96d7 JK |
2047 | What happens here is that the assembler moves the .stabx entries |
2048 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
2049 | all the stabx entries. See PR gdb/2222. */ | |
2050 | while (symno < symtbl_num_syms) { | |
e38e0312 | 2051 | bfd_coff_swap_sym_in (symfile_bfd, |
c84a96d7 | 2052 | symtbl + (symno*local_symesz), symbol); |
2e4964ad | 2053 | if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf")) |
e38e0312 | 2054 | goto gotit; |
6b5b330b | 2055 | symno += symbol->n_numaux+1; |
e38e0312 JG |
2056 | } |
2057 | ||
e9916390 | 2058 | complain (&bf_notfound_complaint); |
e38e0312 JG |
2059 | return 0; |
2060 | ||
2061 | gotit: | |
2062 | /* take aux entry and return its lineno */ | |
2063 | symno++; | |
c84a96d7 | 2064 | bfd_coff_swap_aux_in (symfile_bfd, symtbl+(symno*local_symesz), |
bf8d9d28 ILT |
2065 | symbol->n_type, symbol->n_sclass, |
2066 | 0, symbol->n_numaux, main_aux); | |
e38e0312 JG |
2067 | |
2068 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
2069 | } | |
2070 | ||
2071 | /* Support for line number handling */ | |
2072 | ||
2073 | /* This function is called for every section; it finds the outer limits | |
2074 | * of the line table (minimum and maximum file offset) so that the | |
2075 | * mainline code can read the whole thing for efficiency. | |
2076 | */ | |
2077 | static void | |
2078 | find_linenos(abfd, asect, vpinfo) | |
2079 | bfd *abfd; | |
2080 | sec_ptr asect; | |
1ab3bf1b | 2081 | PTR vpinfo; |
e38e0312 JG |
2082 | { |
2083 | struct coff_symfile_info *info; | |
2084 | int size, count; | |
2085 | file_ptr offset, maxoff; | |
2086 | ||
2087 | count = asect->lineno_count; | |
2088 | ||
2e4964ad | 2089 | if (!STREQ (asect->name, ".text") || count == 0) |
e38e0312 JG |
2090 | return; |
2091 | ||
2092 | size = count * coff_data (symfile_bfd)->local_linesz; | |
2093 | info = (struct coff_symfile_info *)vpinfo; | |
2094 | offset = asect->line_filepos; | |
2095 | maxoff = offset + size; | |
2096 | ||
2097 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
2098 | info->min_lineno_offset = offset; | |
2099 | ||
2100 | if (maxoff > info->max_lineno_offset) | |
2101 | info->max_lineno_offset = maxoff; | |
2102 | } | |
2103 | ||
2104 | ||
2105 | /* Read in all the line numbers for fast lookups later. Leave them in | |
2106 | external (unswapped) format in memory; we'll swap them as we enter | |
2107 | them into GDB's data structures. */ | |
2108 | ||
2109 | static int | |
2110 | init_lineno (abfd, offset, size) | |
2111 | bfd *abfd; | |
d5931d79 | 2112 | file_ptr offset; |
e38e0312 JG |
2113 | int size; |
2114 | { | |
2115 | int val; | |
2116 | ||
0eb22669 PS |
2117 | free_linetab (); |
2118 | ||
d5931d79 | 2119 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
2120 | return -1; |
2121 | ||
2122 | linetab = (char *) xmalloc(size); | |
2123 | ||
2124 | val = bfd_read(linetab, 1, size, abfd); | |
2125 | if (val != size) | |
2126 | return -1; | |
2127 | ||
2128 | linetab_offset = offset; | |
2129 | linetab_size = size; | |
e38e0312 JG |
2130 | return 0; |
2131 | } | |
0eb22669 PS |
2132 | |
2133 | static void | |
2134 | free_linetab () | |
2135 | { | |
2136 | if (linetab) | |
2137 | free (linetab); | |
2138 | linetab = NULL; | |
2139 | } | |
93fe4e33 | 2140 | \f |
1ab3bf1b | 2141 | static void |
9b280a7f | 2142 | xcoff_new_init (objfile) |
80d68b1d | 2143 | struct objfile *objfile; |
e38e0312 | 2144 | { |
e38e0312 JG |
2145 | } |
2146 | ||
dd469789 JG |
2147 | |
2148 | /* xcoff_symfile_init() | |
2149 | is the xcoff-specific initialization routine for reading symbols. | |
2150 | It is passed an objfile which contains, among other things, | |
2151 | the BFD for the file whose symbols are being read, and a slot for | |
2152 | a pointer to "private data" which we fill with cookies and other | |
2153 | treats for xcoff_symfile_read(). | |
2154 | ||
2155 | We will only be called if this is an XCOFF or XCOFF-like file. | |
2156 | BFD handles figuring out the format of the file, and code in symfile.c | |
2157 | uses BFD's determination to vector to us. | |
2158 | ||
2159 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
2160 | ||
1ab3bf1b | 2161 | static void |
9b280a7f | 2162 | xcoff_symfile_init (objfile) |
80d68b1d | 2163 | struct objfile *objfile; |
e38e0312 | 2164 | { |
80d68b1d | 2165 | bfd *abfd = objfile->obfd; |
e38e0312 JG |
2166 | |
2167 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
2168 | objfile -> sym_private = xmmalloc (objfile -> md, |
2169 | sizeof (struct coff_symfile_info)); | |
5e2e79f8 | 2170 | init_entry_point_info (objfile); |
e38e0312 JG |
2171 | } |
2172 | ||
80d68b1d FF |
2173 | /* Perform any local cleanups required when we are done with a particular |
2174 | objfile. I.E, we are in the process of discarding all symbol information | |
2175 | for an objfile, freeing up all memory held for it, and unlinking the | |
2176 | objfile struct from the global list of known objfiles. */ | |
2177 | ||
2178 | static void | |
9b280a7f | 2179 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
2180 | struct objfile *objfile; |
2181 | { | |
2182 | if (objfile -> sym_private != NULL) | |
2183 | { | |
2184 | mfree (objfile -> md, objfile -> sym_private); | |
2185 | } | |
2186 | ||
2187 | /* Start with a fresh include table for the next objfile. */ | |
2188 | ||
2189 | if (inclTable) | |
2190 | { | |
2191 | free (inclTable); | |
2192 | inclTable = NULL; | |
2193 | } | |
2194 | inclIndx = inclLength = inclDepth = 0; | |
2195 | } | |
2196 | ||
e38e0312 JG |
2197 | |
2198 | static int | |
1ab3bf1b | 2199 | init_stringtab(abfd, offset, objfile) |
e38e0312 | 2200 | bfd *abfd; |
d5931d79 | 2201 | file_ptr offset; |
1ab3bf1b | 2202 | struct objfile *objfile; |
e38e0312 JG |
2203 | { |
2204 | long length; | |
2205 | int val; | |
2206 | unsigned char lengthbuf[4]; | |
2207 | ||
d5931d79 | 2208 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
2209 | return -1; |
2210 | ||
2211 | val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
2212 | length = bfd_h_get_32(abfd, lengthbuf); | |
2213 | ||
2214 | /* If no string table is needed, then the file may end immediately | |
2215 | after the symbols. Just return with `strtbl' set to null. */ | |
2216 | ||
2217 | if (val != sizeof length || length < sizeof length) | |
2218 | return 0; | |
2219 | ||
2220 | /* Allocate string table from symbol_obstack. We will need this table | |
2221 | as long as we have its symbol table around. */ | |
2222 | ||
1ab3bf1b | 2223 | strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length); |
e38e0312 JG |
2224 | if (strtbl == NULL) |
2225 | return -1; | |
2226 | ||
ade40d31 | 2227 | memcpy(strtbl, &length, sizeof length); |
e38e0312 JG |
2228 | if (length == sizeof length) |
2229 | return 0; | |
2230 | ||
2231 | val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd); | |
2232 | ||
2233 | if (val != length - sizeof length || strtbl[length - 1] != '\0') | |
2234 | return -1; | |
2235 | ||
2236 | return 0; | |
2237 | } | |
2238 | ||
2239 | static int | |
2240 | init_debugsection(abfd) | |
2241 | bfd *abfd; | |
2242 | { | |
2243 | register sec_ptr secp; | |
2244 | bfd_size_type length; | |
2245 | ||
2246 | if (debugsec) { | |
2247 | free(debugsec); | |
2248 | debugsec = NULL; | |
2249 | } | |
2250 | ||
2251 | secp = bfd_get_section_by_name(abfd, ".debug"); | |
2252 | if (!secp) | |
2253 | return 0; | |
2254 | ||
2255 | if (!(length = bfd_section_size(abfd, secp))) | |
2256 | return 0; | |
2257 | ||
1ab3bf1b | 2258 | debugsec = (char *) xmalloc ((unsigned)length); |
e38e0312 JG |
2259 | if (debugsec == NULL) |
2260 | return -1; | |
2261 | ||
2262 | if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) { | |
199b2450 | 2263 | printf_unfiltered ("Can't read .debug section from symbol file\n"); |
e38e0312 JG |
2264 | return -1; |
2265 | } | |
2266 | return 0; | |
2267 | } | |
2268 | ||
2269 | static void | |
2270 | free_debugsection() | |
2271 | { | |
2272 | if (debugsec) | |
2273 | free(debugsec); | |
2274 | debugsec = NULL; | |
2275 | } | |
2276 | ||
2277 | ||
9b280a7f | 2278 | /* xcoff version of symbol file read. */ |
e38e0312 | 2279 | |
1ab3bf1b | 2280 | static void |
9b280a7f | 2281 | xcoff_symfile_read (objfile, section_offset, mainline) |
80d68b1d | 2282 | struct objfile *objfile; |
1b880e74 | 2283 | struct section_offsets *section_offset; |
e38e0312 JG |
2284 | int mainline; |
2285 | { | |
d5931d79 JG |
2286 | int num_symbols; /* # of symbols */ |
2287 | file_ptr symtab_offset; /* symbol table and */ | |
2288 | file_ptr stringtab_offset; /* string table file offsets */ | |
e38e0312 JG |
2289 | int val; |
2290 | bfd *abfd; | |
80d68b1d | 2291 | struct coff_symfile_info *info; |
e38e0312 | 2292 | char *name; |
0eb22669 | 2293 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
e38e0312 | 2294 | |
80d68b1d FF |
2295 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2296 | symfile_bfd = abfd = objfile->obfd; | |
2297 | name = objfile->name; | |
e38e0312 JG |
2298 | |
2299 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2300 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2301 | stringtab_offset = symtab_offset + | |
2302 | num_symbols * coff_data(abfd)->local_symesz; | |
2303 | ||
2304 | info->min_lineno_offset = 0; | |
2305 | info->max_lineno_offset = 0; | |
2306 | bfd_map_over_sections (abfd, find_linenos, info); | |
2307 | ||
2308 | /* FIXME! This stuff should move into symfile_init */ | |
2309 | if (info->min_lineno_offset != 0 | |
2310 | && info->max_lineno_offset > info->min_lineno_offset) { | |
2311 | ||
2312 | /* only read in the line # table if one exists */ | |
0eb22669 | 2313 | make_cleanup (free_linetab, 0); |
e38e0312 | 2314 | val = init_lineno(abfd, info->min_lineno_offset, |
d5931d79 | 2315 | (int) (info->max_lineno_offset - info->min_lineno_offset)); |
e38e0312 JG |
2316 | |
2317 | if (val < 0) | |
2318 | error("\"%s\": error reading line numbers\n", name); | |
2319 | } | |
2320 | ||
9d61147e JK |
2321 | if (num_symbols > 0) |
2322 | { | |
2323 | val = init_stringtab(abfd, stringtab_offset, objfile); | |
2324 | if (val < 0) { | |
2325 | error ("\"%s\": can't get string table", name); | |
2326 | } | |
e38e0312 | 2327 | |
9d61147e JK |
2328 | if (init_debugsection(abfd) < 0) { |
2329 | error ("Error reading .debug section of `%s'\n", name); | |
2330 | } | |
2331 | } | |
e38e0312 JG |
2332 | |
2333 | /* Position to read the symbol table. Do not read it all at once. */ | |
d5931d79 | 2334 | val = bfd_seek(abfd, symtab_offset, L_SET); |
e38e0312 JG |
2335 | if (val < 0) |
2336 | perror_with_name(name); | |
2337 | ||
2338 | if (bfd_tell(abfd) != symtab_offset) | |
2339 | fatal("bfd? BFD!"); | |
2340 | ||
1ab3bf1b JG |
2341 | init_minimal_symbol_collection (); |
2342 | make_cleanup (discard_minimal_symbols, 0); | |
e38e0312 | 2343 | |
e5eeaaf8 | 2344 | #ifndef FAKING_RS6000 |
556f3d90 | 2345 | /* Initialize load info structure. */ |
e38e0312 | 2346 | if (mainline) |
556f3d90 | 2347 | xcoff_init_loadinfo (); |
e5eeaaf8 | 2348 | #endif |
e38e0312 JG |
2349 | |
2350 | /* Now that the executable file is positioned at symbol table, | |
2351 | process it and define symbols accordingly. */ | |
2352 | ||
80d68b1d | 2353 | read_xcoff_symtab(objfile, num_symbols); |
e38e0312 | 2354 | |
1eeba686 PB |
2355 | /* Free debug section. */ |
2356 | free_debugsection (); | |
e38e0312 JG |
2357 | |
2358 | /* Sort symbols alphabetically within each block. */ | |
577e6a8d JK |
2359 | { |
2360 | struct symtab *s; | |
2361 | for (s = objfile -> symtabs; s != NULL; s = s -> next) | |
2362 | { | |
2363 | sort_symtab_syms (s); | |
2364 | } | |
2365 | } | |
e38e0312 | 2366 | |
1ab3bf1b JG |
2367 | /* Install any minimal symbols that have been collected as the current |
2368 | minimal symbols for this objfile. */ | |
2369 | ||
80d68b1d | 2370 | install_minimal_symbols (objfile); |
0eb22669 PS |
2371 | |
2372 | do_cleanups (back_to); | |
e38e0312 JG |
2373 | } |
2374 | ||
e2adc41a | 2375 | static struct section_offsets * |
9b280a7f | 2376 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2377 | struct objfile *objfile; |
2378 | CORE_ADDR addr; | |
2379 | { | |
2380 | struct section_offsets *section_offsets; | |
2381 | int i; | |
3c02636b | 2382 | |
e2adc41a | 2383 | objfile->num_sections = SECT_OFF_MAX; |
2670f34d | 2384 | section_offsets = (struct section_offsets *) |
3c02636b JK |
2385 | obstack_alloc |
2386 | (&objfile -> psymbol_obstack, | |
2387 | sizeof (struct section_offsets) | |
e2adc41a | 2388 | + sizeof (section_offsets->offsets) * objfile->num_sections); |
2670f34d | 2389 | |
1d7e34e1 JK |
2390 | /* syms_from_objfile kindly subtracts from addr the bfd_section_vma |
2391 | of the .text section. This strikes me as wrong--whether the | |
2392 | offset to be applied to symbol reading is relative to the start | |
2393 | address of the section depends on the symbol format. In any | |
2394 | event, this whole "addr" concept is pretty broken (it doesn't | |
2395 | handle any section but .text sensibly), so just ignore the addr | |
2396 | parameter and use 0. That matches the fact that xcoff_symfile_read | |
2397 | ignores the section_offsets). */ | |
e2adc41a | 2398 | for (i = 0; i < objfile->num_sections; ++i) |
1d7e34e1 | 2399 | ANOFFSET (section_offsets, i) = 0; |
e2adc41a | 2400 | |
2670f34d JG |
2401 | return section_offsets; |
2402 | } | |
0eed42de JK |
2403 | |
2404 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
e38e0312 | 2405 | |
9b280a7f | 2406 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2407 | { |
0eed42de JK |
2408 | |
2409 | /* Because the bfd uses coff_flavour, we need to specially kludge | |
e2adc41a JK |
2410 | the flavour. It is possible that coff and xcoff should be merged as |
2411 | they do have fundamental similarities (for example, the extra storage | |
2412 | classes used for stabs could presumably be recognized in any COFF file). | |
2413 | However, in addition to obvious things like all the csect hair, there are | |
2414 | some subtler differences between xcoffread.c and coffread.c, notably | |
2415 | the fact that coffread.c has no need to read in all the symbols, but | |
2416 | xcoffread.c reads all the symbols and does in fact randomly access them | |
2417 | (in C_BSTAT and B_BINCL processing). */ | |
0eed42de | 2418 | |
52912aac | 2419 | (enum bfd_flavour)-1, |
0eed42de | 2420 | |
9b280a7f JG |
2421 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2422 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2423 | xcoff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2424 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2425 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2426 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2427 | }; |
2428 | ||
2429 | void | |
2430 | _initialize_xcoffread () | |
2431 | { | |
9b280a7f | 2432 | add_symtab_fns(&xcoff_sym_fns); |
e5eeaaf8 | 2433 | |
a81ce07d JK |
2434 | /* Initialize symbol template later used for arguments. Its other |
2435 | fields are zero, or are filled in later. */ | |
e5eeaaf8 JG |
2436 | SYMBOL_NAME (&parmsym) = ""; |
2437 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&parmsym, language_c); | |
2438 | SYMBOL_NAMESPACE (&parmsym) = VAR_NAMESPACE; | |
2439 | SYMBOL_CLASS (&parmsym) = LOC_ARG; | |
a81ce07d JK |
2440 | |
2441 | func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
2442 | "<function, no debug info>", NULL); | |
2443 | TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int; | |
2444 | var_symbol_type = | |
2445 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
2446 | "<variable, no debug info>", NULL); | |
e38e0312 | 2447 | } |