Commit | Line | Data |
---|---|---|
9b280a7f | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
07aa9fdc | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 |
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 | |
1ab3bf1b | 155 | static void |
818de002 PB |
156 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
157 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 158 | |
1ab3bf1b JG |
159 | static void |
160 | free_debugsection PARAMS ((void)); | |
161 | ||
162 | static int | |
163 | init_debugsection PARAMS ((bfd *)); | |
164 | ||
165 | static int | |
d5931d79 | 166 | init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *)); |
1ab3bf1b JG |
167 | |
168 | static void | |
9b280a7f | 169 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
170 | |
171 | static void | |
9b280a7f | 172 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d FF |
173 | |
174 | static void | |
1b880e74 | 175 | xcoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
1ab3bf1b JG |
176 | |
177 | static void | |
9b280a7f | 178 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 179 | |
fe0b60b2 | 180 | static struct section_offsets * |
9b280a7f | 181 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 182 | |
1ab3bf1b | 183 | static int |
d5931d79 | 184 | init_lineno PARAMS ((bfd *, file_ptr, int)); |
1ab3bf1b | 185 | |
0eb22669 PS |
186 | static void |
187 | free_linetab PARAMS ((void)); | |
188 | ||
1ab3bf1b JG |
189 | static void |
190 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
191 | ||
e8abe489 PS |
192 | static char * |
193 | coff_getfilename PARAMS ((union internal_auxent *)); | |
194 | ||
3c02636b JK |
195 | static void |
196 | read_symbol PARAMS ((struct internal_syment *, int)); | |
197 | ||
1ab3bf1b | 198 | static int |
c84a96d7 | 199 | read_symbol_lineno PARAMS ((int)); |
1ab3bf1b JG |
200 | |
201 | static int | |
c84a96d7 | 202 | read_symbol_nvalue PARAMS ((int)); |
1ab3bf1b JG |
203 | |
204 | static struct symbol * | |
205 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
206 | ||
207 | static void | |
208 | read_xcoff_symtab PARAMS ((struct objfile *, int)); | |
209 | ||
1ab3bf1b JG |
210 | static void |
211 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
212 | ||
a81ce07d JK |
213 | \f |
214 | #ifdef STATIC_NODEBUG_VARS | |
215 | /* Return the section_offsets* that CS points to. */ | |
216 | static int cs_to_section PARAMS ((struct coff_symbol *, struct objfile *)); | |
217 | ||
218 | struct find_targ_sec_arg { | |
219 | int targ_index; | |
220 | int *resultp; | |
221 | }; | |
222 | ||
223 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
224 | ||
225 | static void find_targ_sec (abfd, sect, obj) | |
226 | bfd *abfd; | |
227 | asection *sect; | |
228 | PTR obj; | |
229 | { | |
230 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
231 | if (sect->target_index == args->targ_index) | |
232 | { | |
233 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
234 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
235 | *args->resultp = SECT_OFF_TEXT; | |
236 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
237 | *args->resultp = SECT_OFF_DATA; | |
238 | else | |
239 | *args->resultp = SECT_OFF_BSS; | |
240 | } | |
241 | } | |
242 | ||
243 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
244 | static int | |
245 | cs_to_section (cs, objfile) | |
246 | struct coff_symbol *cs; | |
247 | struct objfile *objfile; | |
248 | { | |
249 | int off = SECT_OFF_TEXT; | |
250 | struct find_targ_sec_arg args; | |
251 | args.targ_index = cs->c_secnum; | |
252 | args.resultp = &off; | |
253 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
254 | return off; | |
255 | } | |
256 | #endif /* STATIC_NODEBUG_VARS */ | |
257 | \f | |
e38e0312 JG |
258 | /* add a given stab string into given stab vector. */ |
259 | ||
260 | static void | |
261 | add_stab_to_list (stabname, stabvector) | |
262 | char *stabname; | |
263 | struct pending_stabs **stabvector; | |
264 | { | |
265 | if ( *stabvector == NULL) { | |
266 | *stabvector = (struct pending_stabs *) | |
267 | xmalloc (sizeof (struct pending_stabs) + | |
268 | INITIAL_STABVECTOR_LENGTH * sizeof (char*)); | |
269 | (*stabvector)->count = 0; | |
270 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
271 | } | |
272 | else if ((*stabvector)->count >= (*stabvector)->length) { | |
273 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
274 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 275 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
276 | (*stabvector)->length * sizeof (char*)); |
277 | } | |
278 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
279 | } | |
194d98c6 JK |
280 | \f |
281 | /* Linenos are processed on a file-by-file basis. | |
282 | ||
283 | Two reasons: | |
284 | ||
285 | 1) xlc (IBM's native c compiler) postpones static function code | |
286 | emission to the end of a compilation unit. This way it can | |
287 | determine if those functions (statics) are needed or not, and | |
288 | can do some garbage collection (I think). This makes line | |
289 | numbers and corresponding addresses unordered, and we end up | |
290 | with a line table like: | |
291 | ||
292 | ||
293 | lineno addr | |
294 | foo() 10 0x100 | |
295 | 20 0x200 | |
296 | 30 0x300 | |
297 | ||
298 | foo3() 70 0x400 | |
299 | 80 0x500 | |
300 | 90 0x600 | |
301 | ||
302 | static foo2() | |
303 | 40 0x700 | |
304 | 50 0x800 | |
305 | 60 0x900 | |
306 | ||
307 | and that breaks gdb's binary search on line numbers, if the | |
308 | above table is not sorted on line numbers. And that sort | |
309 | should be on function based, since gcc can emit line numbers | |
310 | like: | |
311 | ||
312 | 10 0x100 - for the init/test part of a for stmt. | |
313 | 20 0x200 | |
314 | 30 0x300 | |
315 | 10 0x400 - for the increment part of a for stmt. | |
e38e0312 | 316 | |
194d98c6 | 317 | arrange_linetable() will do this sorting. |
e38e0312 | 318 | |
194d98c6 | 319 | 2) aix symbol table might look like: |
818de002 | 320 | |
194d98c6 JK |
321 | c_file // beginning of a new file |
322 | .bi // beginning of include file | |
323 | .ei // end of include file | |
324 | .bi | |
325 | .ei | |
818de002 | 326 | |
194d98c6 JK |
327 | basically, .bi/.ei pairs do not necessarily encapsulate |
328 | their scope. They need to be recorded, and processed later | |
329 | on when we come the end of the compilation unit. | |
330 | Include table (inclTable) and process_linenos() handle | |
331 | that. */ | |
818de002 PB |
332 | |
333 | /* compare line table entry addresses. */ | |
334 | ||
194d98c6 | 335 | static int |
818de002 | 336 | compare_lte (lte1, lte2) |
194d98c6 | 337 | struct linetable_entry *lte1, *lte2; |
818de002 PB |
338 | { |
339 | return lte1->pc - lte2->pc; | |
340 | } | |
341 | ||
342 | /* Give a line table with function entries are marked, arrange its functions | |
343 | in assending order and strip off function entry markers and return it in | |
344 | a newly created table. If the old one is good enough, return the old one. */ | |
c438b3af JK |
345 | /* FIXME: I think all this stuff can be replaced by just passing |
346 | sort_linevec = 1 to end_symtab. */ | |
818de002 PB |
347 | |
348 | static struct linetable * | |
349 | arrange_linetable (oldLineTb) | |
350 | struct linetable *oldLineTb; /* old linetable */ | |
351 | { | |
352 | int ii, jj, | |
353 | newline, /* new line count */ | |
354 | function_count; /* # of functions */ | |
355 | ||
356 | struct linetable_entry *fentry; /* function entry vector */ | |
357 | int fentry_size; /* # of function entries */ | |
358 | struct linetable *newLineTb; /* new line table */ | |
359 | ||
360 | #define NUM_OF_FUNCTIONS 20 | |
361 | ||
362 | fentry_size = NUM_OF_FUNCTIONS; | |
363 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 364 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
365 | |
366 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
367 | ||
368 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
369 | ||
370 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
371 | fentry_size *= 2; | |
372 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 373 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
374 | } |
375 | fentry[function_count].line = ii; | |
376 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
377 | ++function_count; | |
378 | } | |
379 | } | |
380 | ||
381 | if (function_count == 0) { | |
382 | free (fentry); | |
383 | return oldLineTb; | |
384 | } | |
385 | else if (function_count > 1) | |
386 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
387 | ||
388 | /* allocate a new line table. */ | |
ecfd2b60 JK |
389 | newLineTb = (struct linetable *) |
390 | xmalloc | |
391 | (sizeof (struct linetable) + | |
392 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
818de002 PB |
393 | |
394 | /* if line table does not start with a function beginning, copy up until | |
395 | a function begin. */ | |
396 | ||
397 | newline = 0; | |
398 | if (oldLineTb->item[0].line != 0) | |
399 | for (newline=0; | |
400 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
401 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
402 | ||
403 | /* Now copy function lines one by one. */ | |
404 | ||
405 | for (ii=0; ii < function_count; ++ii) { | |
406 | for (jj = fentry[ii].line + 1; | |
407 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
408 | ++jj, ++newline) | |
409 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
410 | } | |
411 | free (fentry); | |
412 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
413 | return newLineTb; | |
414 | } | |
415 | ||
416 | ||
417 | ||
418 | /* We try to detect the beginning of a compilation unit. That info will | |
419 | be used as an entry in line number recording routines (enter_line_range) */ | |
420 | ||
421 | static unsigned first_fun_line_offset; | |
422 | static unsigned first_fun_bf; | |
423 | ||
424 | #define mark_first_line(OFFSET, SYMNUM) \ | |
425 | if (!first_fun_line_offset) { \ | |
426 | first_fun_line_offset = OFFSET; \ | |
427 | first_fun_bf = SYMNUM; \ | |
428 | } | |
429 | ||
430 | ||
431 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
432 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
433 | we will determine if we should create additional symtab's to | |
434 | represent if (the include files. */ | |
435 | ||
436 | ||
437 | typedef struct _inclTable { | |
438 | char *name; /* include filename */ | |
2aefe6e4 JK |
439 | |
440 | /* Offsets to the line table. end points to the last entry which is | |
441 | part of this include file. */ | |
442 | int begin, end; | |
443 | ||
818de002 PB |
444 | struct subfile *subfile; |
445 | unsigned funStartLine; /* start line # of its function */ | |
446 | } InclTable; | |
447 | ||
448 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
449 | static InclTable *inclTable; /* global include table */ | |
450 | static int inclIndx; /* last entry to table */ | |
451 | static int inclLength; /* table length */ | |
452 | static int inclDepth; /* nested include depth */ | |
453 | ||
7f4c8595 | 454 | static void allocate_include_entry PARAMS ((void)); |
818de002 PB |
455 | |
456 | static void | |
457 | record_include_begin (cs) | |
458 | struct coff_symbol *cs; | |
459 | { | |
818de002 | 460 | if (inclDepth) |
486b440e JK |
461 | { |
462 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
463 | of course, but in corresponding .s files.). */ | |
464 | ||
67240bb8 JK |
465 | /* This can happen with old versions of GCC. |
466 | GCC 2.3.3-930426 does not exhibit this on a test case which | |
467 | a user said produced the message for him. */ | |
b646b438 | 468 | static struct complaint msg = {"Nested C_BINCL symbols", 0, 0}; |
486b440e JK |
469 | complain (&msg); |
470 | } | |
818de002 PB |
471 | ++inclDepth; |
472 | ||
7f4c8595 | 473 | allocate_include_entry (); |
818de002 PB |
474 | |
475 | inclTable [inclIndx].name = cs->c_name; | |
476 | inclTable [inclIndx].begin = cs->c_value; | |
477 | } | |
478 | ||
818de002 PB |
479 | static void |
480 | record_include_end (cs) | |
481 | struct coff_symbol *cs; | |
482 | { | |
483 | InclTable *pTbl; | |
484 | ||
485 | if (inclDepth == 0) | |
486b440e | 486 | { |
b646b438 | 487 | static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; |
486b440e JK |
488 | complain (&msg); |
489 | } | |
818de002 | 490 | |
7f4c8595 SS |
491 | allocate_include_entry (); |
492 | ||
818de002 PB |
493 | pTbl = &inclTable [inclIndx]; |
494 | pTbl->end = cs->c_value; | |
495 | ||
496 | --inclDepth; | |
497 | ++inclIndx; | |
498 | } | |
499 | ||
7f4c8595 SS |
500 | static void |
501 | allocate_include_entry () | |
502 | { | |
503 | if (inclTable == NULL) | |
504 | { | |
505 | inclTable = (InclTable *) | |
506 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
507 | memset (inclTable, | |
508 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
509 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
510 | inclIndx = 0; | |
511 | } | |
512 | else if (inclIndx >= inclLength) | |
513 | { | |
514 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
515 | inclTable = (InclTable *) | |
516 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
517 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, | |
518 | '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
519 | } | |
520 | } | |
818de002 | 521 | |
7f4c8595 SS |
522 | /* given the start and end addresses of a compilation unit (or a csect, |
523 | at times) process its lines and create appropriate line vectors. */ | |
818de002 PB |
524 | |
525 | static void | |
526 | process_linenos (start, end) | |
527 | CORE_ADDR start, end; | |
528 | { | |
529 | char *pp; | |
530 | int offset, ii; | |
531 | ||
532 | struct subfile main_subfile; /* subfile structure for the main | |
533 | compilation unit. */ | |
534 | ||
535 | /* in the main source file, any time we see a function entry, we reset | |
536 | this variable to function's absolute starting line number. All the | |
537 | following line numbers in the function are relative to this, and | |
538 | we record absolute line numbers in record_line(). */ | |
539 | ||
540 | int main_source_baseline = 0; | |
541 | ||
542 | ||
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 | ||
558 | /* else, there was source with line numbers in include files */ | |
559 | else { | |
560 | ||
561 | main_source_baseline = 0; | |
562 | for (ii=0; ii < inclIndx; ++ii) { | |
563 | ||
564 | struct subfile *tmpSubfile; | |
565 | ||
566 | /* if there is main file source before include file, enter it. */ | |
567 | if (offset < inclTable[ii].begin) { | |
568 | enter_line_range | |
569 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, start, 0, | |
570 | &main_source_baseline); | |
571 | } | |
572 | ||
573 | /* Have a new subfile for the include file */ | |
574 | ||
575 | tmpSubfile = inclTable[ii].subfile = (struct subfile*) | |
576 | xmalloc (sizeof (struct subfile)); | |
577 | ||
4ed97c9a | 578 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
818de002 PB |
579 | firstLine = &(inclTable[ii].funStartLine); |
580 | ||
581 | /* enter include file's lines now. */ | |
582 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
583 | inclTable[ii].end, start, 0, firstLine); | |
584 | ||
585 | offset = inclTable[ii].end + LINESZ; | |
586 | } | |
587 | ||
588 | /* all the include files' line have been processed at this point. Now, | |
589 | enter remaining lines of the main file, if any left. */ | |
590 | if (offset < (linetab_offset + linetab_size + 1 - LINESZ)) { | |
591 | enter_line_range (&main_subfile, offset, 0, start, end, | |
592 | &main_source_baseline); | |
593 | } | |
594 | } | |
595 | ||
596 | /* Process main file's line numbers. */ | |
597 | if (main_subfile.line_vector) { | |
598 | struct linetable *lineTb, *lv; | |
599 | ||
600 | lv = main_subfile.line_vector; | |
601 | ||
602 | /* Line numbers are not necessarily ordered. xlc compilation will | |
603 | put static function to the end. */ | |
604 | ||
605 | lineTb = arrange_linetable (lv); | |
606 | if (lv == lineTb) { | |
607 | current_subfile->line_vector = (struct linetable *) | |
608 | xrealloc (lv, (sizeof (struct linetable) | |
609 | + lv->nitems * sizeof (struct linetable_entry))); | |
610 | ||
611 | } | |
612 | else { | |
613 | free (lv); | |
614 | current_subfile->line_vector = lineTb; | |
615 | } | |
616 | ||
617 | current_subfile->line_vector_length = | |
618 | current_subfile->line_vector->nitems; | |
556f3d90 | 619 | } |
818de002 PB |
620 | |
621 | /* Now, process included files' line numbers. */ | |
622 | ||
623 | for (ii=0; ii < inclIndx; ++ii) { | |
624 | ||
625 | if ( (inclTable[ii].subfile)->line_vector) { /* Useless if!!! FIXMEmgo */ | |
626 | struct linetable *lineTb, *lv; | |
627 | ||
628 | lv = (inclTable[ii].subfile)->line_vector; | |
629 | ||
630 | /* Line numbers are not necessarily ordered. xlc compilation will | |
631 | put static function to the end. */ | |
632 | ||
633 | lineTb = arrange_linetable (lv); | |
634 | ||
635 | push_subfile (); | |
636 | ||
637 | /* For the same include file, we might want to have more than one subfile. | |
638 | This happens if we have something like: | |
639 | ||
640 | ...... | |
641 | #include "foo.h" | |
642 | ...... | |
643 | #include "foo.h" | |
644 | ...... | |
645 | ||
646 | while foo.h including code in it. (stupid but possible) | |
647 | Since start_subfile() looks at the name and uses an existing one if finds, | |
648 | we need to provide a fake name and fool it. */ | |
649 | ||
650 | /* start_subfile (inclTable[ii].name, (char*)0); */ | |
651 | start_subfile (" ?", (char*)0); | |
6d4ea3a5 RP |
652 | free (current_subfile->name); |
653 | current_subfile->name = strdup (inclTable[ii].name); | |
818de002 PB |
654 | |
655 | if (lv == lineTb) { | |
656 | current_subfile->line_vector = (struct linetable *) | |
657 | xrealloc (lv, (sizeof (struct linetable) | |
658 | + lv->nitems * sizeof (struct linetable_entry))); | |
659 | ||
660 | } | |
661 | else { | |
662 | free (lv); | |
663 | current_subfile->line_vector = lineTb; | |
664 | } | |
665 | ||
666 | current_subfile->line_vector_length = | |
667 | current_subfile->line_vector->nitems; | |
668 | start_subfile (pop_subfile (), (char*)0); | |
669 | } | |
670 | } | |
818de002 PB |
671 | |
672 | return_after_cleanup: | |
673 | ||
674 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
675 | inclIndx = 0; | |
676 | ||
677 | /* start with a fresh subfile structure for the next file. */ | |
4ed97c9a | 678 | memset (&main_subfile, '\0', sizeof (struct subfile)); |
818de002 PB |
679 | } |
680 | ||
681 | void | |
682 | aix_process_linenos () | |
683 | { | |
684 | /* process line numbers and enter them into line vector */ | |
685 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
686 | } | |
687 | ||
688 | ||
e38e0312 JG |
689 | /* Enter a given range of lines into the line vector. |
690 | can be called in the following two ways: | |
818de002 | 691 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
2aefe6e4 JK |
692 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) |
693 | ||
694 | endoffset points to the last line table entry that we should pay | |
695 | attention to. */ | |
e38e0312 JG |
696 | |
697 | static void | |
818de002 PB |
698 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine) |
699 | struct subfile *subfile; | |
e38e0312 | 700 | unsigned beginoffset, endoffset; /* offsets to line table */ |
818de002 | 701 | CORE_ADDR startaddr, endaddr; |
e38e0312 JG |
702 | unsigned *firstLine; |
703 | { | |
704 | char *pp, *limit; | |
705 | CORE_ADDR addr; | |
818de002 PB |
706 | |
707 | /* Do Byte swapping, if needed. FIXME! */ | |
708 | #define P_LINENO(PP) (*(unsigned short*)((struct external_lineno*)(PP))->l_lnno) | |
709 | #define P_LINEADDR(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_paddr) | |
710 | #define P_LINESYM(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_symndx) | |
e38e0312 JG |
711 | |
712 | pp = &linetab [beginoffset - linetab_offset]; | |
2aefe6e4 JK |
713 | if (endoffset != 0 && endoffset - linetab_offset >= linetab_size) |
714 | { | |
715 | static struct complaint msg = | |
716 | {"Bad line table offset in C_EINCL directive", 0, 0}; | |
717 | complain (&msg); | |
718 | return; | |
719 | } | |
e38e0312 JG |
720 | limit = endoffset ? &linetab [endoffset - linetab_offset] |
721 | : &linetab [linetab_size -1]; | |
722 | ||
723 | while (pp <= limit) { | |
724 | ||
e38e0312 | 725 | /* find the address this line represents */ |
818de002 | 726 | addr = P_LINENO(pp) ? |
c84a96d7 | 727 | P_LINEADDR(pp) : read_symbol_nvalue (P_LINESYM(pp)); |
e38e0312 | 728 | |
b60b2e3e | 729 | if (addr < startaddr || (endaddr && addr >= endaddr)) |
e38e0312 JG |
730 | return; |
731 | ||
818de002 | 732 | if (P_LINENO(pp) == 0) { |
c84a96d7 | 733 | *firstLine = read_symbol_lineno (P_LINESYM(pp)); |
818de002 | 734 | record_line (subfile, 0, addr); |
e38e0312 JG |
735 | --(*firstLine); |
736 | } | |
737 | else | |
818de002 PB |
738 | record_line (subfile, *firstLine + P_LINENO(pp), addr); |
739 | ||
740 | pp += LINESZ; | |
741 | } | |
742 | } | |
743 | ||
744 | typedef struct { | |
745 | int fsize; /* file size */ | |
746 | int fixedparms; /* number of fixed parms */ | |
747 | int floatparms; /* number of float parms */ | |
748 | unsigned int parminfo; /* parameter info. | |
749 | See /usr/include/sys/debug.h | |
750 | tbtable_ext.parminfo */ | |
751 | int framesize; /* function frame size */ | |
752 | } TracebackInfo; | |
753 | ||
754 | ||
755 | /* Given a function symbol, return its traceback information. */ | |
756 | ||
757 | TracebackInfo * | |
758 | retrieve_tracebackinfo (abfd, textsec, cs) | |
759 | bfd *abfd; | |
760 | sec_ptr textsec; | |
761 | struct coff_symbol *cs; | |
762 | { | |
763 | #define TBTABLE_BUFSIZ 2000 | |
818de002 PB |
764 | |
765 | static TracebackInfo tbInfo; | |
766 | struct tbtable *ptb; | |
767 | ||
768 | static char buffer [TBTABLE_BUFSIZ]; | |
769 | ||
770 | int *pinsn; | |
771 | int bytesread=0; /* total # of bytes read so far */ | |
772 | int bufferbytes; /* number of bytes in the buffer */ | |
773 | ||
774 | int functionstart = cs->c_value - textsec->vma; | |
775 | ||
4ed97c9a | 776 | memset (&tbInfo, '\0', sizeof (tbInfo)); |
818de002 PB |
777 | |
778 | /* keep reading blocks of data from the text section, until finding a zero | |
779 | word and a traceback table. */ | |
780 | ||
2aefe6e4 JK |
781 | /* Note: The logical thing way to write this code would be to assign |
782 | to bufferbytes within the while condition. But that triggers a | |
783 | compiler (xlc in AIX 3.2) bug, so simplify it... */ | |
784 | bufferbytes = | |
785 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
786 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
787 | while (bufferbytes | |
788 | && (bfd_get_section_contents | |
789 | (abfd, textsec, buffer, | |
790 | (file_ptr)(functionstart + bytesread), bufferbytes))) | |
818de002 PB |
791 | { |
792 | bytesread += bufferbytes; | |
793 | pinsn = (int*) buffer; | |
794 | ||
795 | /* if this is the first time we filled the buffer, retrieve function | |
796 | framesize info. */ | |
797 | ||
798 | if (bytesread == bufferbytes) { | |
799 | ||
800 | /* skip over unrelated instructions */ | |
801 | ||
802 | if (*pinsn == 0x7c0802a6) /* mflr r0 */ | |
803 | ++pinsn; | |
804 | if ((*pinsn & 0xfc00003e) == 0x7c000026) /* mfcr Rx */ | |
805 | ++pinsn; | |
806 | if ((*pinsn & 0xfc000000) == 0x48000000) /* bl foo, save fprs */ | |
807 | ++pinsn; | |
808 | if ((*pinsn & 0xfc1f0000) == 0xbc010000) /* stm Rx, NUM(r1) */ | |
809 | ++pinsn; | |
810 | ||
811 | do { | |
812 | int tmp = (*pinsn >> 16) & 0xffff; | |
813 | ||
814 | if (tmp == 0x9421) { /* stu r1, NUM(r1) */ | |
815 | tbInfo.framesize = 0x10000 - (*pinsn & 0xffff); | |
816 | break; | |
817 | } | |
818 | else if ((*pinsn == 0x93e1fffc) || /* st r31,-4(r1) */ | |
819 | (tmp == 0x9001)) /* st r0, NUM(r1) */ | |
820 | ; | |
821 | /* else, could not find a frame size. */ | |
822 | else | |
823 | return NULL; | |
824 | ||
825 | } while (++pinsn && *pinsn); | |
826 | ||
827 | if (!tbInfo.framesize) | |
828 | return NULL; | |
2aefe6e4 | 829 | |
818de002 PB |
830 | } |
831 | ||
832 | /* look for a zero word. */ | |
833 | ||
834 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
835 | ++pinsn; | |
836 | ||
837 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
838 | continue; | |
e38e0312 | 839 | |
818de002 PB |
840 | if (*pinsn == 0) { |
841 | ||
842 | /* function size is the amount of bytes we have skipped so far. */ | |
843 | tbInfo.fsize = bytesread - (buffer + bufferbytes - (char*)pinsn); | |
844 | ||
845 | ++pinsn; | |
846 | ||
847 | /* if we don't have the whole traceback table in the buffer, re-read | |
848 | the whole thing. */ | |
849 | ||
3e57da38 JK |
850 | /* This is how much to read to get the traceback table. |
851 | 8 bytes of the traceback table are always present, plus we | |
852 | look at parminfo. */ | |
853 | #define MIN_TBTABSIZ 12 | |
854 | ||
818de002 PB |
855 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { |
856 | ||
857 | /* In case if we are *very* close to the end of the text section | |
858 | and cannot read properly from that point on, abort by returning | |
859 | NULL. | |
3e57da38 JK |
860 | |
861 | This could happen if the traceback table is only 8 bytes, | |
862 | but we try to read 12 bytes of it. | |
818de002 PB |
863 | Handle this case more graciously -- FIXME */ |
864 | ||
865 | if (!bfd_get_section_contents ( | |
866 | abfd, textsec, buffer, | |
867 | (file_ptr)(functionstart + | |
868 | bytesread - (buffer + bufferbytes - (char*)pinsn)),MIN_TBTABSIZ)) | |
199b2450 | 869 | { printf_unfiltered ("Abnormal return!..\n"); return NULL; } |
818de002 PB |
870 | |
871 | ptb = (struct tbtable *)buffer; | |
872 | } | |
873 | else | |
874 | ptb = (struct tbtable *)pinsn; | |
875 | ||
876 | tbInfo.fixedparms = ptb->tb.fixedparms; | |
877 | tbInfo.floatparms = ptb->tb.floatparms; | |
878 | tbInfo.parminfo = ptb->tb_ext.parminfo; | |
879 | return &tbInfo; | |
880 | } | |
2aefe6e4 JK |
881 | bufferbytes = |
882 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
883 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
818de002 PB |
884 | } |
885 | return NULL; | |
886 | } | |
887 | ||
888 | #if 0 | |
889 | /* Given a function symbol, return a pointer to its traceback table. */ | |
890 | ||
891 | struct tbtable * | |
892 | retrieve_traceback (abfd, textsec, cs, size) | |
893 | bfd *abfd; | |
894 | sec_ptr textsec; | |
895 | struct coff_symbol *cs; | |
896 | int *size; /* return function size */ | |
897 | { | |
898 | #define TBTABLE_BUFSIZ 2000 | |
899 | #define MIN_TBTABSIZ 50 /* minimum buffer size to hold a | |
900 | traceback table. */ | |
901 | ||
902 | static char buffer [TBTABLE_BUFSIZ]; | |
903 | ||
904 | int *pinsn; | |
905 | int bytesread=0; /* total # of bytes read so far */ | |
906 | int bufferbytes; /* number of bytes in the buffer */ | |
907 | ||
908 | int functionstart = cs->c_value - textsec->filepos + textsec->vma; | |
909 | *size = 0; | |
910 | ||
911 | /* keep reading blocks of data from the text section, until finding a zero | |
912 | word and a traceback table. */ | |
913 | ||
914 | while (bfd_get_section_contents (abfd, textsec, buffer, | |
915 | (file_ptr)(functionstart + bytesread), | |
916 | bufferbytes = ( | |
917 | (TBTABLE_BUFSIZ < (textsec->size - functionstart - bytesread)) ? | |
918 | TBTABLE_BUFSIZ : (textsec->size - functionstart - bytesread)))) | |
919 | { | |
920 | bytesread += bufferbytes; | |
921 | pinsn = (int*) buffer; | |
922 | ||
923 | /* look for a zero word. */ | |
924 | ||
925 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
926 | ++pinsn; | |
927 | ||
928 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
929 | continue; | |
930 | ||
931 | if (*pinsn == 0) { | |
932 | ||
933 | /* function size is the amount of bytes we have skipped so far. */ | |
934 | *size = bytesread - (buffer + bufferbytes - pinsn); | |
935 | ||
936 | ++pinsn; | |
937 | ||
938 | /* if we don't have the whole traceback table in the buffer, re-read | |
939 | the whole thing. */ | |
940 | ||
941 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { | |
942 | ||
943 | /* In case if we are *very* close to the end of the text section | |
944 | and cannot read properly from that point on, abort for now. | |
945 | Handle this case more graciously -- FIXME */ | |
946 | ||
947 | if (!bfd_get_section_contents ( | |
948 | abfd, textsec, buffer, | |
949 | (file_ptr)(functionstart + | |
950 | bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ)) | |
199b2450 | 951 | /* abort (); */ { printf_unfiltered ("abort!!!\n"); return NULL; } |
818de002 PB |
952 | |
953 | return (struct tbtable *)buffer; | |
954 | } | |
955 | else | |
956 | return (struct tbtable *)pinsn; | |
957 | } | |
e38e0312 | 958 | } |
818de002 | 959 | return NULL; |
e38e0312 | 960 | } |
818de002 PB |
961 | #endif /* 0 */ |
962 | ||
963 | ||
e38e0312 JG |
964 | |
965 | ||
966 | /* Save the vital information for use when closing off the current file. | |
967 | NAME is the file name the symbols came from, START_ADDR is the first | |
968 | text address for the file, and SIZE is the number of bytes of text. */ | |
969 | ||
970 | #define complete_symtab(name, start_addr) { \ | |
971 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 972 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
973 | } |
974 | ||
975 | ||
976 | /* Refill the symbol table input buffer | |
977 | and set the variables that control fetching entries from it. | |
978 | Reports an error if no data available. | |
979 | This function can read past the end of the symbol table | |
980 | (into the string table) but this does no harm. */ | |
981 | ||
982 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
983 | than functions. */ | |
984 | ||
8d60affd | 985 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED, SECTION, OBJFILE) \ |
e38e0312 JG |
986 | { \ |
987 | char *namestr; \ | |
a81ce07d JK |
988 | namestr = (NAME); \ |
989 | if (namestr[0] == '.') ++namestr; \ | |
990 | if (!(ALLOCED)) { \ | |
1eeba686 | 991 | (NAME) = namestr = \ |
a81ce07d | 992 | obstack_copy0 (&objfile->symbol_obstack, namestr, strlen (namestr)); \ |
e38e0312 JG |
993 | (ALLOCED) = 1; \ |
994 | } \ | |
3c02636b | 995 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ |
8d60affd | 996 | (char *)NULL, (SECTION), (OBJFILE)); \ |
818de002 | 997 | misc_func_recorded = 1; \ |
e38e0312 JG |
998 | } |
999 | ||
1000 | ||
e5eeaaf8 JG |
1001 | /* A parameter template, used by ADD_PARM_TO_PENDING. It is initialized |
1002 | in our initializer function at the bottom of the file, to avoid | |
1003 | dependencies on the exact "struct symbol" format. */ | |
818de002 | 1004 | |
e5eeaaf8 | 1005 | static struct symbol parmsym; |
818de002 PB |
1006 | |
1007 | /* Add a parameter to a given pending symbol list. */ | |
1008 | ||
1009 | #define ADD_PARM_TO_PENDING(PARM, VALUE, PTYPE, PENDING_SYMBOLS) \ | |
1010 | { \ | |
1011 | PARM = (struct symbol *) \ | |
1012 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ | |
1013 | *(PARM) = parmsym; \ | |
1014 | SYMBOL_TYPE (PARM) = PTYPE; \ | |
1015 | SYMBOL_VALUE (PARM) = VALUE; \ | |
1016 | add_symbol_to_list (PARM, &PENDING_SYMBOLS); \ | |
1017 | } | |
1018 | ||
e38e0312 | 1019 | |
9b280a7f | 1020 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
1021 | nested. At any given time, a symbol can only be in one static block. |
1022 | This is the base address of current static block, zero if non exists. */ | |
1023 | ||
1024 | static int static_block_base = 0; | |
1025 | ||
3c02636b JK |
1026 | /* Section number for the current static block. */ |
1027 | ||
1028 | static int static_block_section = -1; | |
1029 | ||
e38e0312 JG |
1030 | /* true if space for symbol name has been allocated. */ |
1031 | ||
1032 | static int symname_alloced = 0; | |
1033 | ||
34d265dc JK |
1034 | /* Next symbol to read. Pointer into raw seething symbol table. */ |
1035 | ||
1036 | static char *raw_symbol; | |
1037 | ||
1038 | /* This is the function which stabsread.c calls to get symbol | |
1039 | continuations. */ | |
1040 | static char * | |
1041 | xcoff_next_symbol_text () | |
1042 | { | |
1043 | struct internal_syment symbol; | |
1044 | static struct complaint msg = | |
1045 | {"Unexpected symbol continuation", 0, 0}; | |
963dbabe | 1046 | char *retval; |
34d265dc JK |
1047 | |
1048 | bfd_coff_swap_sym_in (current_objfile->obfd, raw_symbol, &symbol); | |
afbdbbd7 | 1049 | if (symbol.n_zeroes) |
963dbabe JK |
1050 | { |
1051 | complain (&msg); | |
1052 | ||
1053 | /* Return something which points to '\0' and hope the symbol reading | |
1054 | code does something reasonable. */ | |
1055 | retval = ""; | |
1056 | } | |
afbdbbd7 | 1057 | else if (symbol.n_sclass & 0x80) |
963dbabe JK |
1058 | { |
1059 | retval = debugsec + symbol.n_offset; | |
1060 | raw_symbol += coff_data (current_objfile->obfd)->local_symesz; | |
1061 | ++symnum; | |
1062 | } | |
34d265dc | 1063 | else |
963dbabe JK |
1064 | { |
1065 | complain (&msg); | |
1066 | ||
1067 | /* Return something which points to '\0' and hope the symbol reading | |
1068 | code does something reasonable. */ | |
1069 | retval = ""; | |
1070 | } | |
1071 | return retval; | |
34d265dc JK |
1072 | } |
1073 | ||
e38e0312 JG |
1074 | /* read the whole symbol table of a given bfd. */ |
1075 | ||
1ab3bf1b | 1076 | static void |
e38e0312 JG |
1077 | read_xcoff_symtab (objfile, nsyms) |
1078 | struct objfile *objfile; /* Object file we're reading from */ | |
1079 | int nsyms; /* # of symbols */ | |
1080 | { | |
1081 | bfd *abfd = objfile->obfd; | |
e38e0312 | 1082 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ |
818de002 PB |
1083 | sec_ptr textsec; /* Pointer to text section */ |
1084 | TracebackInfo *ptb; /* Pointer to traceback table */ | |
1085 | ||
e38e0312 | 1086 | struct internal_syment symbol[1]; |
6657a0c7 | 1087 | union internal_auxent main_aux; |
e38e0312 JG |
1088 | struct coff_symbol cs[1]; |
1089 | CORE_ADDR file_start_addr = 0; | |
1090 | CORE_ADDR file_end_addr = 0; | |
1091 | ||
1092 | int next_file_symnum = -1; | |
1093 | int just_started = 1; | |
1094 | int depth = 0; | |
556f3d90 | 1095 | int toc_offset = 0; /* toc offset value in data section. */ |
e38e0312 | 1096 | int val; |
e38e0312 JG |
1097 | int fcn_last_line; |
1098 | int fcn_start_addr; | |
1099 | long fcn_line_offset; | |
1100 | size_t size; | |
1101 | ||
1eeba686 PB |
1102 | struct coff_symbol fcn_stab_saved; |
1103 | ||
e38e0312 JG |
1104 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
1105 | union internal_auxent fcn_aux_saved; | |
818de002 | 1106 | struct type *fcn_type_saved = NULL; |
e38e0312 JG |
1107 | struct context_stack *new; |
1108 | ||
1109 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
1110 | |
1111 | char *last_csect_name; /* last seen csect's name and value */ | |
1112 | CORE_ADDR last_csect_val; | |
3c02636b | 1113 | int last_csect_sec; |
818de002 | 1114 | int misc_func_recorded; /* true if any misc. function */ |
e38e0312 | 1115 | |
1ab3bf1b JG |
1116 | current_objfile = objfile; |
1117 | ||
a81ce07d JK |
1118 | /* Get the appropriate COFF "constants" related to the file we're |
1119 | handling. */ | |
e38e0312 JG |
1120 | N_TMASK = coff_data (abfd)->local_n_tmask; |
1121 | N_BTSHFT = coff_data (abfd)->local_n_btshft; | |
1122 | local_symesz = coff_data (abfd)->local_symesz; | |
1123 | ||
d07734e3 | 1124 | last_source_file = NULL; |
818de002 PB |
1125 | last_csect_name = 0; |
1126 | last_csect_val = 0; | |
1127 | misc_func_recorded = 0; | |
e38e0312 | 1128 | |
d07734e3 | 1129 | start_stabs (); |
e38e0312 JG |
1130 | start_symtab (filestring, (char *)NULL, file_start_addr); |
1131 | symnum = 0; | |
1132 | first_object_file_end = 0; | |
1133 | ||
1134 | /* Allocate space for the entire symbol table at once, and read it | |
1135 | all in. The bfd is already positioned at the beginning of | |
1136 | the symbol table. */ | |
1137 | ||
1138 | size = coff_data (abfd)->local_symesz * nsyms; | |
1139 | symtbl = xmalloc (size); | |
c84a96d7 | 1140 | symtbl_num_syms = nsyms; |
e38e0312 JG |
1141 | |
1142 | val = bfd_read (symtbl, size, 1, abfd); | |
1143 | if (val != size) | |
1144 | perror_with_name ("reading symbol table"); | |
1145 | ||
1146 | raw_symbol = symtbl; | |
1147 | ||
818de002 | 1148 | textsec = bfd_get_section_by_name (abfd, ".text"); |
a81ce07d JK |
1149 | if (!textsec) |
1150 | { | |
1151 | printf_unfiltered ("Unable to locate text section!\n"); | |
1152 | } | |
818de002 | 1153 | |
34d265dc JK |
1154 | next_symbol_text_func = xcoff_next_symbol_text; |
1155 | ||
a81ce07d JK |
1156 | while (symnum < nsyms) |
1157 | { | |
e38e0312 | 1158 | |
a81ce07d | 1159 | QUIT; /* make this command interruptable. */ |
e38e0312 | 1160 | |
a81ce07d JK |
1161 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ |
1162 | /* read one symbol into `cs' structure. After processing the | |
1163 | whole symbol table, only string table will be kept in memory, | |
1164 | symbol table and debug section of xcoff will be freed. Thus | |
1165 | we can mark symbols with names in string table as | |
1166 | `alloced'. */ | |
1167 | { | |
1168 | int ii; | |
1169 | ||
1170 | /* Swap and align the symbol into a reasonable C structure. */ | |
1171 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1172 | ||
1173 | cs->c_symnum = symnum; | |
1174 | cs->c_naux = symbol->n_numaux; | |
1175 | if (symbol->n_zeroes) | |
786757a9 | 1176 | { |
a81ce07d JK |
1177 | symname_alloced = 0; |
1178 | /* We must use the original, unswapped, name here so the name field | |
1179 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1180 | we use the new field, it gets overwritten for each symbol. */ | |
1181 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
1182 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
1183 | '\0'-terminated. */ | |
1184 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1185 | { | |
1186 | char *p; | |
1187 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); | |
1188 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1189 | p[E_SYMNMLEN] = '\0'; | |
1190 | cs->c_name = p; | |
1191 | symname_alloced = 1; | |
1192 | } | |
1193 | } | |
1194 | else if (symbol->n_sclass & 0x80) | |
1195 | { | |
1196 | cs->c_name = debugsec + symbol->n_offset; | |
1197 | symname_alloced = 0; | |
1198 | } | |
1199 | else | |
1200 | { | |
1201 | /* in string table */ | |
1202 | cs->c_name = strtbl + (int)symbol->n_offset; | |
786757a9 JK |
1203 | symname_alloced = 1; |
1204 | } | |
a81ce07d JK |
1205 | cs->c_value = symbol->n_value; |
1206 | cs->c_sclass = symbol->n_sclass; | |
1207 | cs->c_secnum = symbol->n_scnum; | |
1208 | cs->c_type = (unsigned)symbol->n_type; | |
e38e0312 | 1209 | |
a81ce07d JK |
1210 | raw_symbol += coff_data (abfd)->local_symesz; |
1211 | ++symnum; | |
e38e0312 | 1212 | |
a81ce07d JK |
1213 | /* Save addr of first aux entry. */ |
1214 | raw_auxptr = raw_symbol; | |
e38e0312 | 1215 | |
a81ce07d JK |
1216 | /* Skip all the auxents associated with this symbol. */ |
1217 | for (ii = symbol->n_numaux; ii; --ii) | |
1218 | { | |
1219 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1220 | ++symnum; | |
1221 | } | |
e38e0312 | 1222 | } |
e38e0312 | 1223 | |
a81ce07d JK |
1224 | /* if symbol name starts with ".$" or "$", ignore it. */ |
1225 | if (cs->c_name[0] == '$' | |
1226 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1227 | continue; | |
e38e0312 | 1228 | |
a81ce07d | 1229 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) |
d07734e3 | 1230 | { |
a81ce07d JK |
1231 | if (last_source_file) |
1232 | { | |
1233 | end_symtab (cur_src_end_addr, 1, 0, objfile, | |
1234 | textsec->target_index); | |
1235 | end_stabs (); | |
1236 | } | |
e38e0312 | 1237 | |
a81ce07d JK |
1238 | start_stabs (); |
1239 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); | |
1240 | cur_src_end_addr = first_object_file_end; | |
1241 | /* done with all files, everything from here on is globals */ | |
1242 | } | |
e38e0312 | 1243 | |
a81ce07d JK |
1244 | /* if explicitly specified as a function, treat is as one. */ |
1245 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) | |
1246 | { | |
1247 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1248 | 0, cs->c_naux, &main_aux); | |
1249 | goto function_entry_point; | |
1250 | } | |
e38e0312 | 1251 | |
a81ce07d JK |
1252 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1253 | && cs->c_naux == 1) | |
1254 | { | |
1255 | /* Dealing with a symbol with a csect entry. */ | |
e38e0312 | 1256 | |
a81ce07d JK |
1257 | #define CSECT(PP) ((PP)->x_csect) |
1258 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1259 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1260 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1261 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
e38e0312 | 1262 | |
a81ce07d JK |
1263 | /* Convert the auxent to something we can access. */ |
1264 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1265 | 0, cs->c_naux, &main_aux); | |
e38e0312 | 1266 | |
a81ce07d JK |
1267 | switch (CSECT_SMTYP (&main_aux)) |
1268 | { | |
e38e0312 | 1269 | |
a81ce07d JK |
1270 | case XTY_ER: |
1271 | /* Ignore all external references. */ | |
1272 | continue; | |
e38e0312 | 1273 | |
a81ce07d JK |
1274 | case XTY_SD: |
1275 | /* A section description. */ | |
e38e0312 | 1276 | { |
a81ce07d JK |
1277 | switch (CSECT_SCLAS (&main_aux)) |
1278 | { | |
1279 | ||
1280 | case XMC_PR: | |
1281 | { | |
1282 | ||
1283 | /* A program csect is seen. We have to allocate one | |
1284 | symbol table for each program csect. Normally gdb | |
1285 | prefers one symtab for each source file. In case | |
1286 | of AIX, one source file might include more than one | |
1287 | [PR] csect, and they don't have to be adjacent in | |
1288 | terms of the space they occupy in memory. Thus, one | |
1289 | single source file might get fragmented in the | |
1290 | memory and gdb's file start and end address | |
1291 | approach does not work! GCC (and I think xlc) seem | |
1292 | to put all the code in the unnamed program csect. */ | |
1293 | ||
1294 | if (last_csect_name) | |
1295 | { | |
1296 | ||
1297 | /* If no misc. function recorded in the last | |
1298 | seen csect, enter it as a function. This | |
1299 | will take care of functions like strcmp() | |
1300 | compiled by xlc. */ | |
1301 | ||
1302 | if (!misc_func_recorded) | |
1303 | { | |
1304 | int alloced = 0; | |
1305 | RECORD_MINIMAL_SYMBOL | |
1306 | (last_csect_name, last_csect_val, | |
1307 | mst_text, alloced, last_csect_sec, | |
1308 | objfile); | |
1309 | } | |
1310 | ||
1311 | complete_symtab (filestring, file_start_addr); | |
1312 | cur_src_end_addr = file_end_addr; | |
1313 | end_symtab (file_end_addr, 1, 0, objfile, | |
1314 | textsec->target_index); | |
1315 | end_stabs (); | |
1316 | start_stabs (); | |
1317 | /* Give all csects for this source file the same | |
1318 | name. */ | |
1319 | start_symtab (filestring, NULL, (CORE_ADDR)0); | |
1320 | } | |
1321 | ||
1322 | /* If this is the very first csect seen, | |
1323 | basically `__start'. */ | |
1324 | if (just_started) | |
1325 | { | |
1326 | first_object_file_end | |
1327 | = cs->c_value + CSECT_LEN (&main_aux); | |
1328 | just_started = 0; | |
1329 | } | |
1330 | ||
1331 | file_start_addr = cs->c_value; | |
1332 | file_end_addr = cs->c_value + CSECT_LEN (&main_aux); | |
1333 | ||
1334 | if (cs->c_name && cs->c_name[0] == '.') | |
1335 | { | |
1336 | last_csect_name = cs->c_name; | |
1337 | last_csect_val = cs->c_value; | |
1338 | last_csect_sec = cs->c_secnum; | |
1339 | } | |
1340 | } | |
1341 | misc_func_recorded = 0; | |
1342 | continue; | |
1343 | ||
1344 | case XMC_RW : | |
1345 | break; | |
1346 | ||
1347 | /* If the section is not a data description, | |
1348 | ignore it. Note that uninitialized data will | |
1349 | show up as XTY_CM/XMC_RW pair. */ | |
1350 | ||
1351 | case XMC_TC0: | |
1352 | if (toc_offset) | |
1353 | warning ("More than one xmc_tc0 symbol found."); | |
1354 | toc_offset = cs->c_value; | |
1355 | continue; | |
1356 | ||
1357 | case XMC_TC: | |
1358 | #ifdef STATIC_NODEBUG_VARS | |
1359 | /* We need to process these symbols if they are C_HIDEXT, | |
1360 | for static variables in files compiled without -g. */ | |
1361 | if (cs->c_sclass == C_HIDEXT) | |
1362 | break; | |
1363 | else | |
1364 | #endif | |
1365 | continue; | |
e38e0312 | 1366 | |
a81ce07d JK |
1367 | default: |
1368 | /* Ignore the symbol. */ | |
1369 | continue; | |
818de002 | 1370 | } |
e38e0312 | 1371 | } |
e38e0312 JG |
1372 | break; |
1373 | ||
a81ce07d JK |
1374 | case XTY_LD: |
1375 | ||
1376 | switch (CSECT_SCLAS (&main_aux)) | |
1377 | { | |
1378 | case XMC_PR: | |
1379 | /* a function entry point. */ | |
1380 | function_entry_point: | |
1381 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_text, | |
1382 | symname_alloced, cs->c_secnum, | |
1383 | objfile); | |
1384 | ||
1385 | fcn_line_offset = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1386 | fcn_start_addr = cs->c_value; | |
1387 | ||
1388 | /* save the function header info, which will be used | |
1389 | when `.bf' is seen. */ | |
1390 | fcn_cs_saved = *cs; | |
1391 | fcn_aux_saved = main_aux; | |
1392 | ||
1393 | ptb = NULL; | |
1394 | ||
1395 | /* If function has two auxent, then debugging information is | |
1396 | already available for it. Process traceback table for | |
1397 | functions with only one auxent. */ | |
1398 | ||
1399 | if (cs->c_naux == 1) | |
1400 | ptb = retrieve_tracebackinfo (abfd, textsec, cs); | |
1401 | ||
1402 | else if (cs->c_naux != 2) | |
1403 | { | |
1404 | static struct complaint msg = | |
1405 | {"Expected one or two auxents for function", 0, 0}; | |
1406 | complain (&msg); | |
1407 | } | |
1408 | ||
1409 | /* If there is traceback info, create and add parameters | |
1410 | for it. */ | |
1411 | ||
1412 | if (ptb && (ptb->fixedparms || ptb->floatparms)) | |
1413 | { | |
1414 | ||
1415 | int parmcnt = ptb->fixedparms + ptb->floatparms; | |
1416 | char *parmcode = (char*) &ptb->parminfo; | |
1417 | ||
1418 | /* The link area is 0x18 bytes. */ | |
1419 | int parmvalue = ptb->framesize + 0x18; | |
1420 | unsigned int ii, mask; | |
1421 | ||
1422 | for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) | |
1423 | { | |
1424 | struct symbol *parm; | |
1425 | ||
1426 | if (ptb->parminfo & mask) | |
1427 | { | |
1428 | /* float or double */ | |
1429 | mask = mask >> 1; | |
1430 | if (ptb->parminfo & mask) | |
1431 | { | |
1432 | /* double parm */ | |
1433 | ADD_PARM_TO_PENDING | |
1434 | (parm, parmvalue, builtin_type_double, | |
1435 | local_symbols); | |
1436 | parmvalue += sizeof (double); | |
1437 | } | |
1438 | else | |
1439 | { | |
1440 | /* float parm */ | |
1441 | ADD_PARM_TO_PENDING | |
1442 | (parm, parmvalue, builtin_type_float, | |
1443 | local_symbols); | |
1444 | parmvalue += sizeof (float); | |
1445 | } | |
1446 | } | |
1447 | else | |
1448 | { | |
1449 | /* fixed parm, use (int*) for hex rep. */ | |
1450 | ADD_PARM_TO_PENDING | |
1451 | (parm, parmvalue, | |
1452 | lookup_pointer_type (builtin_type_int), | |
1453 | local_symbols); | |
1454 | parmvalue += sizeof (int); | |
1455 | } | |
1456 | mask = mask >> 1; | |
1457 | } | |
1458 | ||
1459 | /* Fake this as a function. Needed in | |
1460 | process_xcoff_symbol(). */ | |
1461 | cs->c_type = 32; | |
1462 | ||
1463 | finish_block | |
1464 | (process_xcoff_symbol (cs, objfile), &local_symbols, | |
1465 | pending_blocks, cs->c_value, | |
1466 | cs->c_value + ptb->fsize, objfile); | |
1467 | } | |
1468 | continue; | |
1469 | ||
1470 | case XMC_GL: | |
1471 | /* shared library function trampoline code entry point. */ | |
1472 | ||
1473 | /* record trampoline code entries as | |
1474 | mst_solib_trampoline symbol. When we lookup mst | |
1475 | symbols, we will choose mst_text over | |
1476 | mst_solib_trampoline. */ | |
1477 | RECORD_MINIMAL_SYMBOL | |
1478 | (cs->c_name, cs->c_value, | |
1479 | mst_solib_trampoline, | |
1480 | symname_alloced, cs->c_secnum, objfile); | |
1481 | continue; | |
1482 | ||
1483 | case XMC_DS: | |
1484 | /* The symbols often have the same names as debug symbols for | |
1485 | functions, and confuse lookup_symbol. */ | |
1486 | continue; | |
1487 | ||
1488 | default: | |
1489 | /* xlc puts each variable in a separate csect, so we get | |
1490 | an XTY_SD for each variable. But gcc puts several | |
1491 | variables in a csect, so that each variable only gets | |
1492 | an XTY_LD. We still need to record them. This will | |
1493 | typically be XMC_RW; I suspect XMC_RO and XMC_BS might | |
1494 | be possible too. */ | |
1495 | break; | |
1496 | } | |
e38e0312 | 1497 | |
a81ce07d JK |
1498 | default: |
1499 | break; | |
e38e0312 | 1500 | } |
a81ce07d | 1501 | } |
e38e0312 | 1502 | |
a81ce07d JK |
1503 | switch (cs->c_sclass) |
1504 | { | |
e38e0312 | 1505 | |
a81ce07d | 1506 | case C_FILE: |
818de002 | 1507 | |
a81ce07d | 1508 | /* see if the last csect needs to be recorded. */ |
818de002 | 1509 | |
a81ce07d JK |
1510 | if (last_csect_name && !misc_func_recorded) |
1511 | { | |
818de002 | 1512 | |
a81ce07d JK |
1513 | /* If no misc. function recorded in the last seen csect, enter |
1514 | it as a function. This will take care of functions like | |
1515 | strcmp() compiled by xlc. */ | |
818de002 | 1516 | |
a81ce07d JK |
1517 | int alloced = 0; |
1518 | RECORD_MINIMAL_SYMBOL | |
1519 | (last_csect_name, last_csect_val, | |
1520 | mst_text, alloced, last_csect_sec, objfile); | |
1521 | } | |
818de002 | 1522 | |
a81ce07d JK |
1523 | /* c_value field contains symnum of next .file entry in table |
1524 | or symnum of first global after last .file. */ | |
818de002 | 1525 | |
a81ce07d | 1526 | next_file_symnum = cs->c_value; |
818de002 | 1527 | |
a81ce07d JK |
1528 | /* Complete symbol table for last object file containing |
1529 | debugging information. */ | |
818de002 | 1530 | |
a81ce07d JK |
1531 | /* Whether or not there was a csect in the previous file, we |
1532 | have to call `end_stabs' and `start_stabs' to reset | |
1533 | type_vector, line_vector, etc. structures. */ | |
818de002 | 1534 | |
a81ce07d JK |
1535 | complete_symtab (filestring, file_start_addr); |
1536 | cur_src_end_addr = file_end_addr; | |
1537 | end_symtab (file_end_addr, 1, 0, objfile, textsec->target_index); | |
1538 | end_stabs (); | |
818de002 | 1539 | |
a81ce07d JK |
1540 | /* XCOFF, according to the AIX 3.2 documentation, puts the filename |
1541 | in cs->c_name. But xlc 1.3.0.2 has decided to do things the | |
1542 | standard COFF way and put it in the auxent. We use the auxent if | |
1543 | the symbol is ".file" and an auxent exists, otherwise use the symbol | |
1544 | itself. Simple enough. */ | |
1545 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) | |
1546 | { | |
1547 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1548 | 0, cs->c_naux, &main_aux); | |
1549 | filestring = coff_getfilename (&main_aux); | |
818de002 | 1550 | } |
a81ce07d JK |
1551 | else |
1552 | filestring = cs->c_name; | |
d4cedfe4 | 1553 | |
a81ce07d JK |
1554 | start_stabs (); |
1555 | start_symtab (filestring, (char *)NULL, (CORE_ADDR)0); | |
1556 | last_csect_name = 0; | |
507e4004 | 1557 | |
a81ce07d JK |
1558 | /* reset file start and end addresses. A compilation unit with no text |
1559 | (only data) should have zero file boundaries. */ | |
1560 | file_start_addr = file_end_addr = 0; | |
e38e0312 | 1561 | break; |
e38e0312 | 1562 | |
a81ce07d JK |
1563 | case C_FUN: |
1564 | fcn_stab_saved = *cs; | |
1565 | break; | |
e38e0312 | 1566 | |
a81ce07d JK |
1567 | case C_FCN: |
1568 | if (STREQ (cs->c_name, ".bf")) | |
1569 | { | |
818de002 | 1570 | |
a81ce07d JK |
1571 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1572 | 0, cs->c_naux, &main_aux); | |
818de002 | 1573 | |
a81ce07d | 1574 | within_function = 1; |
818de002 | 1575 | |
a81ce07d | 1576 | mark_first_line (fcn_line_offset, cs->c_symnum); |
818de002 | 1577 | |
a81ce07d | 1578 | new = push_context (0, fcn_start_addr); |
e38e0312 | 1579 | |
a81ce07d JK |
1580 | new->name = define_symbol |
1581 | (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile); | |
1582 | if (new->name != NULL) | |
1583 | SYMBOL_SECTION (new->name) = cs->c_secnum; | |
1584 | } | |
1585 | else if (STREQ (cs->c_name, ".ef")) | |
1586 | { | |
e38e0312 | 1587 | |
a81ce07d JK |
1588 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1589 | 0, cs->c_naux, &main_aux); | |
1590 | ||
1591 | /* The value of .ef is the address of epilogue code; | |
1592 | not useful for gdb. */ | |
1593 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1594 | contains number of lines to '}' */ | |
1595 | ||
1596 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1597 | new = pop_context (); | |
1598 | if (context_stack_depth != 0) | |
1599 | error ("\ | |
1600 | invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.", | |
1601 | symnum); | |
1602 | ||
1603 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1604 | new->start_addr, | |
1605 | fcn_cs_saved.c_value + | |
1606 | fcn_aux_saved.x_sym.x_misc.x_fsize, objfile); | |
1607 | within_function = 0; | |
1608 | } | |
1609 | break; | |
818de002 | 1610 | |
a81ce07d JK |
1611 | case C_BSTAT: |
1612 | /* Begin static block. */ | |
1613 | { | |
1614 | struct internal_syment symbol; | |
af8b7906 | 1615 | |
a81ce07d JK |
1616 | read_symbol (&symbol, cs->c_value); |
1617 | static_block_base = symbol.n_value; | |
1618 | static_block_section = symbol.n_scnum; | |
1619 | } | |
1620 | break; | |
af8b7906 | 1621 | |
a81ce07d JK |
1622 | case C_ESTAT: |
1623 | /* End of static block. */ | |
1624 | static_block_base = 0; | |
1625 | static_block_section = -1; | |
1626 | break; | |
e38e0312 | 1627 | |
a81ce07d JK |
1628 | case C_ARG: |
1629 | case C_REGPARM: | |
1630 | case C_TPDEF: | |
1631 | case C_STRTAG: | |
1632 | case C_UNTAG: | |
1633 | case C_ENTAG: | |
1634 | printf_unfiltered | |
1635 | ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass); | |
1636 | break; | |
e38e0312 | 1637 | |
a81ce07d JK |
1638 | case C_LABEL: |
1639 | case C_NULL: | |
1640 | /* Ignore these. */ | |
1641 | break; | |
e38e0312 | 1642 | |
a81ce07d JK |
1643 | /* This is wrong. These symbols are XMC_TC, which means that |
1644 | the value of the symbol is the address of the TOC entry, not | |
1645 | the address of the variable itself. */ | |
1646 | case C_HIDEXT: | |
76a457c0 | 1647 | #ifdef STATIC_NODEBUG_VARS |
a81ce07d JK |
1648 | { |
1649 | /* This is the only place that static variables show up in files | |
1650 | compiled without -g. External variables also have a C_EXT, | |
1651 | so that is why we record everything as mst_file_* here. */ | |
1652 | enum minimal_symbol_type ms_type; | |
1653 | CORE_ADDR tmpaddr; | |
1654 | int sec; | |
818de002 | 1655 | |
a81ce07d JK |
1656 | sec = cs_to_section (cs, objfile); |
1657 | tmpaddr = cs->c_value; | |
e38e0312 | 1658 | |
a81ce07d JK |
1659 | switch (sec) |
1660 | { | |
1661 | case SECT_OFF_TEXT: | |
1662 | case SECT_OFF_RODATA: | |
1663 | ms_type = mst_file_text; | |
1664 | break; | |
1665 | case SECT_OFF_DATA: | |
1666 | ms_type = mst_file_data; | |
1667 | break; | |
1668 | case SECT_OFF_BSS: | |
1669 | ms_type = mst_file_bss; | |
1670 | break; | |
1671 | default: | |
1672 | ms_type = mst_unknown; | |
1673 | break; | |
1674 | } | |
1675 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, ms_type, | |
1676 | symname_alloced, cs->c_secnum, objfile); | |
1677 | } | |
1678 | #endif /* STATIC_NODEBUG_VARS */ | |
1679 | break; | |
e38e0312 | 1680 | |
a81ce07d JK |
1681 | case C_BINCL: |
1682 | /* beginning of include file */ | |
1683 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1684 | order. Thus, when wee see them, we might not know enough info | |
1685 | to process them. Thus, we'll be saving them into a table | |
1686 | (inclTable) and postpone their processing. */ | |
e38e0312 | 1687 | |
a81ce07d JK |
1688 | record_include_begin (cs); |
1689 | break; | |
e38e0312 | 1690 | |
a81ce07d JK |
1691 | case C_EINCL: |
1692 | /* End of include file. */ | |
1693 | /* See the comment after case C_BINCL. */ | |
1694 | record_include_end (cs); | |
1695 | break; | |
1eeba686 | 1696 | |
a81ce07d JK |
1697 | case C_BLOCK: |
1698 | if (STREQ (cs->c_name, ".bb")) | |
1699 | { | |
1700 | depth++; | |
1701 | new = push_context (depth, cs->c_value); | |
1702 | } | |
1703 | else if (STREQ (cs->c_name, ".eb")) | |
1704 | { | |
1705 | new = pop_context (); | |
1706 | if (depth != new->depth) | |
1707 | error ("\ | |
1708 | Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.", | |
1709 | symnum); | |
1710 | ||
1711 | depth--; | |
1712 | if (local_symbols && context_stack_depth > 0) | |
1713 | { | |
1714 | /* Make a block for the local symbols within. */ | |
1715 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1716 | new->start_addr, cs->c_value, objfile); | |
1717 | } | |
1718 | local_symbols = new->locals; | |
1719 | } | |
1720 | break; | |
e38e0312 | 1721 | |
a81ce07d JK |
1722 | default: |
1723 | process_xcoff_symbol (cs, objfile); | |
1724 | break; | |
e38e0312 | 1725 | } |
e38e0312 JG |
1726 | } |
1727 | ||
e38e0312 | 1728 | if (last_source_file) |
d07734e3 | 1729 | { |
3c02636b | 1730 | end_symtab (cur_src_end_addr, 1, 0, objfile, textsec->target_index); |
d07734e3 FF |
1731 | end_stabs (); |
1732 | } | |
e38e0312 JG |
1733 | |
1734 | free (symtbl); | |
1ab3bf1b | 1735 | current_objfile = NULL; |
556f3d90 PB |
1736 | |
1737 | /* Record the toc offset value of this symbol table into ldinfo structure. | |
1738 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
1739 | this information would be file auxiliary header. */ | |
1740 | ||
e5eeaaf8 | 1741 | #ifndef FAKING_RS6000 |
556f3d90 | 1742 | xcoff_add_toc_to_loadinfo (toc_offset); |
e5eeaaf8 | 1743 | #endif |
e38e0312 JG |
1744 | } |
1745 | ||
1746 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1747 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1748 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1749 | *(SYMBOL2) = *(SYMBOL1); |
1750 | ||
1751 | ||
1752 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
1ab3bf1b | 1753 | (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME)); |
e38e0312 JG |
1754 | |
1755 | ||
a81ce07d JK |
1756 | static struct type *func_symbol_type; |
1757 | static struct type *var_symbol_type; | |
1758 | ||
e38e0312 JG |
1759 | /* process one xcoff symbol. */ |
1760 | ||
1761 | static struct symbol * | |
1ab3bf1b | 1762 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1763 | register struct coff_symbol *cs; |
1ab3bf1b | 1764 | struct objfile *objfile; |
e38e0312 JG |
1765 | { |
1766 | struct symbol onesymbol; | |
1767 | register struct symbol *sym = &onesymbol; | |
1768 | struct symbol *sym2 = NULL; | |
1769 | struct type *ttype; | |
1770 | char *name, *pp, *qq; | |
818de002 | 1771 | int struct_and_type_combined; |
6c6afbb9 | 1772 | int nameless; |
e38e0312 JG |
1773 | |
1774 | name = cs->c_name; | |
1775 | if (name[0] == '.') | |
1776 | ++name; | |
1777 | ||
4ed97c9a | 1778 | memset (sym, '\0', sizeof (struct symbol)); |
e38e0312 JG |
1779 | |
1780 | /* default assumptions */ | |
1781 | SYMBOL_VALUE (sym) = cs->c_value; | |
1782 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
3c02636b | 1783 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 | 1784 | |
a81ce07d JK |
1785 | if (ISFCN (cs->c_type)) |
1786 | { | |
1787 | /* At this point, we don't know the type of the function. This | |
1788 | will be patched with the type from its stab entry later on in | |
1789 | patch_block_stabs (), unless the file was compiled without -g. */ | |
e38e0312 | 1790 | |
a81ce07d JK |
1791 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); |
1792 | SYMBOL_TYPE (sym) = func_symbol_type; | |
e38e0312 | 1793 | |
a81ce07d JK |
1794 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1795 | SYMBOL_DUP (sym, sym2); | |
e38e0312 | 1796 | |
a81ce07d JK |
1797 | if (cs->c_sclass == C_EXT) |
1798 | add_symbol_to_list (sym2, &global_symbols); | |
1799 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1800 | add_symbol_to_list (sym2, &file_symbols); | |
1801 | } | |
1802 | else | |
e38e0312 | 1803 | { |
a81ce07d JK |
1804 | /* In case we can't figure out the type, provide default. */ |
1805 | SYMBOL_TYPE (sym) = var_symbol_type; | |
1806 | ||
1807 | switch (cs->c_sclass) | |
1808 | { | |
818de002 | 1809 | #if 0 |
a81ce07d JK |
1810 | case C_FUN: |
1811 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1812 | add_stab_to_list (name, &global_stabs); | |
1813 | else | |
1814 | add_stab_to_list (name, &file_stabs); | |
1815 | break; | |
818de002 | 1816 | #endif |
e38e0312 | 1817 | |
a81ce07d JK |
1818 | case C_GSYM: |
1819 | add_stab_to_list (name, &global_stabs); | |
1820 | break; | |
e38e0312 | 1821 | |
a81ce07d JK |
1822 | case C_BCOMM: |
1823 | common_block_start (cs->c_name, objfile); | |
1824 | break; | |
9438d642 | 1825 | |
a81ce07d JK |
1826 | case C_ECOMM: |
1827 | common_block_end (objfile); | |
1828 | break; | |
9438d642 | 1829 | |
a81ce07d JK |
1830 | default: |
1831 | complain (&storclass_complaint, cs->c_sclass); | |
1832 | /* FALLTHROUGH */ | |
9438d642 | 1833 | |
a81ce07d JK |
1834 | case C_DECL: |
1835 | case C_PSYM: | |
1836 | case C_RPSYM: | |
1837 | case C_ECOML: | |
1eeba686 | 1838 | |
a81ce07d JK |
1839 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); |
1840 | if (sym != NULL) | |
1841 | { | |
1842 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1843 | } | |
1844 | return sym; | |
e38e0312 | 1845 | |
a81ce07d | 1846 | case C_STSYM: |
1eeba686 | 1847 | |
a81ce07d JK |
1848 | /* For xlc (not GCC), the 'V' symbol descriptor is used for |
1849 | all statics and we need to distinguish file-scope versus | |
1850 | function-scope using within_function. We do this by | |
1851 | changing the string we pass to define_symbol to use 'S' | |
1852 | where we need to, which is not necessarily super-clean, | |
1853 | but seems workable enough. */ | |
91cc45da | 1854 | |
a81ce07d JK |
1855 | if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL) |
1856 | return NULL; | |
91cc45da | 1857 | |
a81ce07d JK |
1858 | ++pp; |
1859 | if (*pp == 'V' && !within_function) | |
1860 | *pp = 'S'; | |
1861 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1862 | if (sym != NULL) | |
1863 | { | |
1864 | SYMBOL_VALUE (sym) += static_block_base; | |
1865 | SYMBOL_SECTION (sym) = static_block_section; | |
1866 | } | |
1867 | return sym; | |
e38e0312 | 1868 | |
a81ce07d JK |
1869 | case C_LSYM: |
1870 | sym = define_symbol (cs->c_value, cs->c_name, 0, N_LSYM, objfile); | |
1871 | if (sym != NULL) | |
1872 | { | |
1873 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1874 | } | |
1875 | return sym; | |
e38e0312 | 1876 | |
a81ce07d JK |
1877 | case C_AUTO: |
1878 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1879 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1880 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1881 | SYMBOL_DUP (sym, sym2); | |
1882 | add_symbol_to_list (sym2, &local_symbols); | |
1883 | break; | |
e38e0312 | 1884 | |
a81ce07d JK |
1885 | case C_EXT: |
1886 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1887 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1888 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1889 | SYMBOL_DUP (sym, sym2); | |
1890 | add_symbol_to_list (sym2, &global_symbols); | |
1891 | break; | |
e38e0312 | 1892 | |
a81ce07d JK |
1893 | case C_STAT: |
1894 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1895 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1896 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1897 | SYMBOL_DUP (sym, sym2); | |
1898 | add_symbol_to_list | |
1899 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1900 | break; | |
e38e0312 | 1901 | |
a81ce07d JK |
1902 | case C_REG: |
1903 | printf_unfiltered ("ERROR! C_REG is not fully implemented!\n"); | |
1904 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1905 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1906 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1907 | SYMBOL_DUP (sym, sym2); | |
1908 | add_symbol_to_list (sym2, &local_symbols); | |
1909 | break; | |
e38e0312 | 1910 | |
a81ce07d JK |
1911 | case C_RSYM: |
1912 | pp = (char*) strchr (name, ':'); | |
1913 | if (pp) | |
1914 | { | |
1915 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
1916 | if (sym != NULL) | |
1917 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1918 | return sym; | |
1919 | } | |
1920 | else | |
1921 | { | |
1922 | complain (&rsym_complaint, name); | |
1923 | return NULL; | |
1924 | } | |
1eeba686 | 1925 | } |
e38e0312 | 1926 | } |
e38e0312 JG |
1927 | return sym2; |
1928 | } | |
1929 | ||
e8abe489 PS |
1930 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1931 | only the last component of the name. Result is in static storage and | |
1932 | is only good for temporary use. */ | |
1933 | ||
1934 | static char * | |
1935 | coff_getfilename (aux_entry) | |
1936 | union internal_auxent *aux_entry; | |
1937 | { | |
1938 | static char buffer[BUFSIZ]; | |
1939 | register char *temp; | |
1940 | char *result; | |
1941 | ||
1942 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1943 | strcpy (buffer, strtbl + aux_entry->x_file.x_n.x_offset); | |
1944 | else | |
1945 | { | |
1946 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1947 | buffer[FILNMLEN] = '\0'; | |
1948 | } | |
1949 | result = buffer; | |
1950 | ||
1951 | /* FIXME: We should not be throwing away the information about what | |
1952 | directory. It should go into dirname of the symtab, or some such | |
1953 | place. */ | |
1954 | if ((temp = strrchr (result, '/')) != NULL) | |
1955 | result = temp + 1; | |
1956 | return (result); | |
1957 | } | |
1958 | ||
3c02636b JK |
1959 | /* Set *SYMBOL to symbol number symno in symtbl. */ |
1960 | static void | |
1961 | read_symbol (symbol, symno) | |
1962 | struct internal_syment *symbol; | |
e38e0312 JG |
1963 | int symno; |
1964 | { | |
c84a96d7 JK |
1965 | if (symno < 0 || symno >= symtbl_num_syms) |
1966 | { | |
b646b438 | 1967 | static struct complaint msg = |
c84a96d7 JK |
1968 | {"Invalid symbol offset", 0, 0}; |
1969 | complain (&msg); | |
3c02636b JK |
1970 | symbol->n_value = 0; |
1971 | symbol->n_scnum = -1; | |
1972 | return; | |
c84a96d7 JK |
1973 | } |
1974 | bfd_coff_swap_sym_in (symfile_bfd, symtbl + (symno*local_symesz), symbol); | |
3c02636b JK |
1975 | } |
1976 | ||
1977 | /* Get value corresponding to symbol number symno in symtbl. */ | |
1978 | ||
1979 | static int | |
1980 | read_symbol_nvalue (symno) | |
1981 | int symno; | |
1982 | { | |
1983 | struct internal_syment symbol[1]; | |
1984 | ||
1985 | read_symbol (symbol, symno); | |
e38e0312 JG |
1986 | return symbol->n_value; |
1987 | } | |
1988 | ||
1989 | ||
c84a96d7 JK |
1990 | /* Find the address of the function corresponding to symno, where |
1991 | symno is the symbol pointed to by the linetable. */ | |
1992 | ||
e38e0312 | 1993 | static int |
c84a96d7 | 1994 | read_symbol_lineno (symno) |
e38e0312 JG |
1995 | int symno; |
1996 | { | |
1997 | struct internal_syment symbol[1]; | |
1998 | union internal_auxent main_aux[1]; | |
1999 | ||
c84a96d7 JK |
2000 | /* Note that just searching for a short distance (e.g. 50 symbols) |
2001 | is not enough, at least in the following case. | |
2002 | ||
2003 | .extern foo | |
2004 | [many .stabx entries] | |
2005 | [a few functions, referring to foo] | |
2006 | .globl foo | |
2007 | .bf | |
e38e0312 | 2008 | |
c84a96d7 JK |
2009 | What happens here is that the assembler moves the .stabx entries |
2010 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
2011 | all the stabx entries. See PR gdb/2222. */ | |
2012 | while (symno < symtbl_num_syms) { | |
e38e0312 | 2013 | bfd_coff_swap_sym_in (symfile_bfd, |
c84a96d7 | 2014 | symtbl + (symno*local_symesz), symbol); |
2e4964ad | 2015 | if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf")) |
e38e0312 | 2016 | goto gotit; |
6b5b330b | 2017 | symno += symbol->n_numaux+1; |
e38e0312 JG |
2018 | } |
2019 | ||
e9916390 | 2020 | complain (&bf_notfound_complaint); |
e38e0312 JG |
2021 | return 0; |
2022 | ||
2023 | gotit: | |
2024 | /* take aux entry and return its lineno */ | |
2025 | symno++; | |
c84a96d7 | 2026 | bfd_coff_swap_aux_in (symfile_bfd, symtbl+(symno*local_symesz), |
bf8d9d28 ILT |
2027 | symbol->n_type, symbol->n_sclass, |
2028 | 0, symbol->n_numaux, main_aux); | |
e38e0312 JG |
2029 | |
2030 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
2031 | } | |
2032 | ||
2033 | /* Support for line number handling */ | |
2034 | ||
2035 | /* This function is called for every section; it finds the outer limits | |
2036 | * of the line table (minimum and maximum file offset) so that the | |
2037 | * mainline code can read the whole thing for efficiency. | |
2038 | */ | |
2039 | static void | |
2040 | find_linenos(abfd, asect, vpinfo) | |
2041 | bfd *abfd; | |
2042 | sec_ptr asect; | |
1ab3bf1b | 2043 | PTR vpinfo; |
e38e0312 JG |
2044 | { |
2045 | struct coff_symfile_info *info; | |
2046 | int size, count; | |
2047 | file_ptr offset, maxoff; | |
2048 | ||
2049 | count = asect->lineno_count; | |
2050 | ||
2e4964ad | 2051 | if (!STREQ (asect->name, ".text") || count == 0) |
e38e0312 JG |
2052 | return; |
2053 | ||
2054 | size = count * coff_data (symfile_bfd)->local_linesz; | |
2055 | info = (struct coff_symfile_info *)vpinfo; | |
2056 | offset = asect->line_filepos; | |
2057 | maxoff = offset + size; | |
2058 | ||
2059 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
2060 | info->min_lineno_offset = offset; | |
2061 | ||
2062 | if (maxoff > info->max_lineno_offset) | |
2063 | info->max_lineno_offset = maxoff; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | /* Read in all the line numbers for fast lookups later. Leave them in | |
2068 | external (unswapped) format in memory; we'll swap them as we enter | |
2069 | them into GDB's data structures. */ | |
2070 | ||
2071 | static int | |
2072 | init_lineno (abfd, offset, size) | |
2073 | bfd *abfd; | |
d5931d79 | 2074 | file_ptr offset; |
e38e0312 JG |
2075 | int size; |
2076 | { | |
2077 | int val; | |
2078 | ||
0eb22669 PS |
2079 | free_linetab (); |
2080 | ||
d5931d79 | 2081 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
2082 | return -1; |
2083 | ||
2084 | linetab = (char *) xmalloc(size); | |
2085 | ||
2086 | val = bfd_read(linetab, 1, size, abfd); | |
2087 | if (val != size) | |
2088 | return -1; | |
2089 | ||
2090 | linetab_offset = offset; | |
2091 | linetab_size = size; | |
e38e0312 JG |
2092 | return 0; |
2093 | } | |
0eb22669 PS |
2094 | |
2095 | static void | |
2096 | free_linetab () | |
2097 | { | |
2098 | if (linetab) | |
2099 | free (linetab); | |
2100 | linetab = NULL; | |
2101 | } | |
93fe4e33 | 2102 | \f |
1ab3bf1b | 2103 | static void |
9b280a7f | 2104 | xcoff_new_init (objfile) |
80d68b1d | 2105 | struct objfile *objfile; |
e38e0312 | 2106 | { |
e38e0312 JG |
2107 | } |
2108 | ||
dd469789 JG |
2109 | |
2110 | /* xcoff_symfile_init() | |
2111 | is the xcoff-specific initialization routine for reading symbols. | |
2112 | It is passed an objfile which contains, among other things, | |
2113 | the BFD for the file whose symbols are being read, and a slot for | |
2114 | a pointer to "private data" which we fill with cookies and other | |
2115 | treats for xcoff_symfile_read(). | |
2116 | ||
2117 | We will only be called if this is an XCOFF or XCOFF-like file. | |
2118 | BFD handles figuring out the format of the file, and code in symfile.c | |
2119 | uses BFD's determination to vector to us. | |
2120 | ||
2121 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
2122 | ||
1ab3bf1b | 2123 | static void |
9b280a7f | 2124 | xcoff_symfile_init (objfile) |
80d68b1d | 2125 | struct objfile *objfile; |
e38e0312 | 2126 | { |
80d68b1d | 2127 | bfd *abfd = objfile->obfd; |
e38e0312 JG |
2128 | |
2129 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
2130 | objfile -> sym_private = xmmalloc (objfile -> md, |
2131 | sizeof (struct coff_symfile_info)); | |
5e2e79f8 | 2132 | init_entry_point_info (objfile); |
e38e0312 JG |
2133 | } |
2134 | ||
80d68b1d FF |
2135 | /* Perform any local cleanups required when we are done with a particular |
2136 | objfile. I.E, we are in the process of discarding all symbol information | |
2137 | for an objfile, freeing up all memory held for it, and unlinking the | |
2138 | objfile struct from the global list of known objfiles. */ | |
2139 | ||
2140 | static void | |
9b280a7f | 2141 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
2142 | struct objfile *objfile; |
2143 | { | |
2144 | if (objfile -> sym_private != NULL) | |
2145 | { | |
2146 | mfree (objfile -> md, objfile -> sym_private); | |
2147 | } | |
2148 | ||
2149 | /* Start with a fresh include table for the next objfile. */ | |
2150 | ||
2151 | if (inclTable) | |
2152 | { | |
2153 | free (inclTable); | |
2154 | inclTable = NULL; | |
2155 | } | |
2156 | inclIndx = inclLength = inclDepth = 0; | |
2157 | } | |
2158 | ||
e38e0312 JG |
2159 | |
2160 | static int | |
1ab3bf1b | 2161 | init_stringtab(abfd, offset, objfile) |
e38e0312 | 2162 | bfd *abfd; |
d5931d79 | 2163 | file_ptr offset; |
1ab3bf1b | 2164 | struct objfile *objfile; |
e38e0312 JG |
2165 | { |
2166 | long length; | |
2167 | int val; | |
2168 | unsigned char lengthbuf[4]; | |
2169 | ||
d5931d79 | 2170 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
2171 | return -1; |
2172 | ||
2173 | val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
2174 | length = bfd_h_get_32(abfd, lengthbuf); | |
2175 | ||
2176 | /* If no string table is needed, then the file may end immediately | |
2177 | after the symbols. Just return with `strtbl' set to null. */ | |
2178 | ||
2179 | if (val != sizeof length || length < sizeof length) | |
2180 | return 0; | |
2181 | ||
2182 | /* Allocate string table from symbol_obstack. We will need this table | |
2183 | as long as we have its symbol table around. */ | |
2184 | ||
1ab3bf1b | 2185 | strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length); |
e38e0312 JG |
2186 | if (strtbl == NULL) |
2187 | return -1; | |
2188 | ||
ade40d31 | 2189 | memcpy(strtbl, &length, sizeof length); |
e38e0312 JG |
2190 | if (length == sizeof length) |
2191 | return 0; | |
2192 | ||
2193 | val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd); | |
2194 | ||
2195 | if (val != length - sizeof length || strtbl[length - 1] != '\0') | |
2196 | return -1; | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | static int | |
2202 | init_debugsection(abfd) | |
2203 | bfd *abfd; | |
2204 | { | |
2205 | register sec_ptr secp; | |
2206 | bfd_size_type length; | |
2207 | ||
2208 | if (debugsec) { | |
2209 | free(debugsec); | |
2210 | debugsec = NULL; | |
2211 | } | |
2212 | ||
2213 | secp = bfd_get_section_by_name(abfd, ".debug"); | |
2214 | if (!secp) | |
2215 | return 0; | |
2216 | ||
2217 | if (!(length = bfd_section_size(abfd, secp))) | |
2218 | return 0; | |
2219 | ||
1ab3bf1b | 2220 | debugsec = (char *) xmalloc ((unsigned)length); |
e38e0312 JG |
2221 | if (debugsec == NULL) |
2222 | return -1; | |
2223 | ||
2224 | if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) { | |
199b2450 | 2225 | printf_unfiltered ("Can't read .debug section from symbol file\n"); |
e38e0312 JG |
2226 | return -1; |
2227 | } | |
2228 | return 0; | |
2229 | } | |
2230 | ||
2231 | static void | |
2232 | free_debugsection() | |
2233 | { | |
2234 | if (debugsec) | |
2235 | free(debugsec); | |
2236 | debugsec = NULL; | |
2237 | } | |
2238 | ||
2239 | ||
9b280a7f | 2240 | /* xcoff version of symbol file read. */ |
e38e0312 | 2241 | |
1ab3bf1b | 2242 | static void |
9b280a7f | 2243 | xcoff_symfile_read (objfile, section_offset, mainline) |
80d68b1d | 2244 | struct objfile *objfile; |
1b880e74 | 2245 | struct section_offsets *section_offset; |
e38e0312 JG |
2246 | int mainline; |
2247 | { | |
d5931d79 JG |
2248 | int num_symbols; /* # of symbols */ |
2249 | file_ptr symtab_offset; /* symbol table and */ | |
2250 | file_ptr stringtab_offset; /* string table file offsets */ | |
e38e0312 JG |
2251 | int val; |
2252 | bfd *abfd; | |
80d68b1d | 2253 | struct coff_symfile_info *info; |
e38e0312 | 2254 | char *name; |
0eb22669 | 2255 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
e38e0312 | 2256 | |
80d68b1d FF |
2257 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2258 | symfile_bfd = abfd = objfile->obfd; | |
2259 | name = objfile->name; | |
e38e0312 JG |
2260 | |
2261 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2262 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2263 | stringtab_offset = symtab_offset + | |
2264 | num_symbols * coff_data(abfd)->local_symesz; | |
2265 | ||
2266 | info->min_lineno_offset = 0; | |
2267 | info->max_lineno_offset = 0; | |
2268 | bfd_map_over_sections (abfd, find_linenos, info); | |
2269 | ||
2270 | /* FIXME! This stuff should move into symfile_init */ | |
2271 | if (info->min_lineno_offset != 0 | |
2272 | && info->max_lineno_offset > info->min_lineno_offset) { | |
2273 | ||
2274 | /* only read in the line # table if one exists */ | |
0eb22669 | 2275 | make_cleanup (free_linetab, 0); |
e38e0312 | 2276 | val = init_lineno(abfd, info->min_lineno_offset, |
d5931d79 | 2277 | (int) (info->max_lineno_offset - info->min_lineno_offset)); |
e38e0312 JG |
2278 | |
2279 | if (val < 0) | |
2280 | error("\"%s\": error reading line numbers\n", name); | |
2281 | } | |
2282 | ||
9d61147e JK |
2283 | if (num_symbols > 0) |
2284 | { | |
2285 | val = init_stringtab(abfd, stringtab_offset, objfile); | |
2286 | if (val < 0) { | |
2287 | error ("\"%s\": can't get string table", name); | |
2288 | } | |
e38e0312 | 2289 | |
9d61147e JK |
2290 | if (init_debugsection(abfd) < 0) { |
2291 | error ("Error reading .debug section of `%s'\n", name); | |
2292 | } | |
2293 | } | |
e38e0312 JG |
2294 | |
2295 | /* Position to read the symbol table. Do not read it all at once. */ | |
d5931d79 | 2296 | val = bfd_seek(abfd, symtab_offset, L_SET); |
e38e0312 JG |
2297 | if (val < 0) |
2298 | perror_with_name(name); | |
2299 | ||
2300 | if (bfd_tell(abfd) != symtab_offset) | |
2301 | fatal("bfd? BFD!"); | |
2302 | ||
1ab3bf1b JG |
2303 | init_minimal_symbol_collection (); |
2304 | make_cleanup (discard_minimal_symbols, 0); | |
e38e0312 | 2305 | |
e5eeaaf8 | 2306 | #ifndef FAKING_RS6000 |
556f3d90 | 2307 | /* Initialize load info structure. */ |
e38e0312 | 2308 | if (mainline) |
556f3d90 | 2309 | xcoff_init_loadinfo (); |
e5eeaaf8 | 2310 | #endif |
e38e0312 JG |
2311 | |
2312 | /* Now that the executable file is positioned at symbol table, | |
2313 | process it and define symbols accordingly. */ | |
2314 | ||
80d68b1d | 2315 | read_xcoff_symtab(objfile, num_symbols); |
e38e0312 | 2316 | |
1eeba686 PB |
2317 | /* Free debug section. */ |
2318 | free_debugsection (); | |
e38e0312 JG |
2319 | |
2320 | /* Sort symbols alphabetically within each block. */ | |
577e6a8d JK |
2321 | { |
2322 | struct symtab *s; | |
2323 | for (s = objfile -> symtabs; s != NULL; s = s -> next) | |
2324 | { | |
2325 | sort_symtab_syms (s); | |
2326 | } | |
2327 | } | |
e38e0312 | 2328 | |
1ab3bf1b JG |
2329 | /* Install any minimal symbols that have been collected as the current |
2330 | minimal symbols for this objfile. */ | |
2331 | ||
80d68b1d | 2332 | install_minimal_symbols (objfile); |
0eb22669 PS |
2333 | |
2334 | do_cleanups (back_to); | |
e38e0312 JG |
2335 | } |
2336 | ||
3c02636b JK |
2337 | /* XCOFF-specific parsing routine for section offsets. */ |
2338 | ||
2339 | static int largest_section; | |
2340 | ||
2341 | static void | |
2342 | note_one_section (abfd, asect, ptr) | |
2343 | bfd *abfd; | |
2344 | asection *asect; | |
2345 | PTR ptr; | |
2346 | { | |
2347 | if (asect->target_index > largest_section) | |
2348 | largest_section = asect->target_index; | |
2349 | } | |
2670f34d JG |
2350 | |
2351 | static | |
2352 | struct section_offsets * | |
9b280a7f | 2353 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2354 | struct objfile *objfile; |
2355 | CORE_ADDR addr; | |
2356 | { | |
2357 | struct section_offsets *section_offsets; | |
2358 | int i; | |
3c02636b JK |
2359 | |
2360 | largest_section = 0; | |
2361 | bfd_map_over_sections (objfile->obfd, note_one_section, NULL); | |
2362 | objfile->num_sections = largest_section + 1; | |
2670f34d | 2363 | section_offsets = (struct section_offsets *) |
3c02636b JK |
2364 | obstack_alloc |
2365 | (&objfile -> psymbol_obstack, | |
2366 | sizeof (struct section_offsets) | |
2367 | + sizeof (section_offsets->offsets) * (objfile->num_sections)); | |
2670f34d | 2368 | |
1d7e34e1 JK |
2369 | /* syms_from_objfile kindly subtracts from addr the bfd_section_vma |
2370 | of the .text section. This strikes me as wrong--whether the | |
2371 | offset to be applied to symbol reading is relative to the start | |
2372 | address of the section depends on the symbol format. In any | |
2373 | event, this whole "addr" concept is pretty broken (it doesn't | |
2374 | handle any section but .text sensibly), so just ignore the addr | |
2375 | parameter and use 0. That matches the fact that xcoff_symfile_read | |
2376 | ignores the section_offsets). */ | |
3c02636b | 2377 | for (i = 0; i < objfile->num_sections; i++) |
1d7e34e1 | 2378 | ANOFFSET (section_offsets, i) = 0; |
2670f34d JG |
2379 | |
2380 | return section_offsets; | |
2381 | } | |
0eed42de JK |
2382 | |
2383 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
e38e0312 | 2384 | |
9b280a7f | 2385 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2386 | { |
0eed42de JK |
2387 | |
2388 | /* Because the bfd uses coff_flavour, we need to specially kludge | |
2389 | the flavour. FIXME: coff and xcoff and fundamentally similar | |
2390 | except for debug format, and we should see if we can merge this | |
2391 | file with coffread.c. For example, the extra storage classes | |
2392 | used for stabs could presumably be recognized in any COFF file. */ | |
2393 | ||
52912aac | 2394 | (enum bfd_flavour)-1, |
0eed42de | 2395 | |
9b280a7f JG |
2396 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2397 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2398 | xcoff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2399 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2400 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2401 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2402 | }; |
2403 | ||
2404 | void | |
2405 | _initialize_xcoffread () | |
2406 | { | |
9b280a7f | 2407 | add_symtab_fns(&xcoff_sym_fns); |
e5eeaaf8 | 2408 | |
a81ce07d JK |
2409 | /* Initialize symbol template later used for arguments. Its other |
2410 | fields are zero, or are filled in later. */ | |
e5eeaaf8 JG |
2411 | SYMBOL_NAME (&parmsym) = ""; |
2412 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&parmsym, language_c); | |
2413 | SYMBOL_NAMESPACE (&parmsym) = VAR_NAMESPACE; | |
2414 | SYMBOL_CLASS (&parmsym) = LOC_ARG; | |
a81ce07d JK |
2415 | |
2416 | func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
2417 | "<function, no debug info>", NULL); | |
2418 | TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int; | |
2419 | var_symbol_type = | |
2420 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
2421 | "<variable, no debug info>", NULL); | |
e38e0312 | 2422 | } |