Commit | Line | Data |
---|---|---|
9b280a7f | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
dd469789 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 |
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> | |
35 | ||
36 | #include "obstack.h" | |
37 | #include <sys/param.h> | |
5e4d4b0f | 38 | #ifndef NO_SYS_FILE |
e38e0312 | 39 | #include <sys/file.h> |
5e4d4b0f | 40 | #endif |
e38e0312 | 41 | #include <sys/stat.h> |
818de002 | 42 | #include <sys/debug.h> |
e38e0312 JG |
43 | |
44 | #include "symtab.h" | |
1ab3bf1b | 45 | #include "gdbtypes.h" |
e38e0312 | 46 | #include "symfile.h" |
5e2e79f8 | 47 | #include "objfiles.h" |
e38e0312 | 48 | #include "buildsym.h" |
d07734e3 | 49 | #include "stabsread.h" |
dd469789 | 50 | #include "complaints.h" |
e38e0312 | 51 | |
f5f0679a | 52 | #include "coff/internal.h" /* FIXME, internal data from BFD */ |
e38e0312 | 53 | #include "libcoff.h" /* FIXME, internal data from BFD */ |
f5f0679a | 54 | #include "coff/rs6000.h" /* FIXME, raw file-format guts of xcoff */ |
e38e0312 | 55 | |
73262420 | 56 | /* For interface with stabsread.c. */ |
c41e08c4 | 57 | #include "aout/stab_gnu.h" |
1eeba686 | 58 | |
e38e0312 JG |
59 | /* Simplified internal version of coff symbol table information */ |
60 | ||
61 | struct coff_symbol { | |
62 | char *c_name; | |
63 | int c_symnum; /* symbol number of this entry */ | |
64 | int c_nsyms; /* 0 if syment only, 1 if syment + auxent */ | |
65 | long c_value; | |
ef5b809c | 66 | unsigned char c_sclass; |
e38e0312 JG |
67 | int c_secnum; |
68 | unsigned int c_type; | |
69 | }; | |
70 | ||
71 | /* The COFF line table, in raw form. */ | |
72 | static char *linetab = NULL; /* Its actual contents */ | |
73 | static long linetab_offset; /* Its offset in the file */ | |
74 | static unsigned long linetab_size; /* Its size */ | |
75 | ||
76 | /* last function's saved coff symbol `cs' */ | |
77 | ||
78 | static struct coff_symbol fcn_cs_saved; | |
79 | ||
80 | static bfd *symfile_bfd; | |
81 | ||
82 | /* Core address of start and end of text of current source file. | |
83 | This is calculated from the first function seen after a C_FILE | |
84 | symbol. */ | |
85 | ||
818de002 | 86 | |
e38e0312 JG |
87 | static CORE_ADDR cur_src_end_addr; |
88 | ||
89 | /* Core address of the end of the first object file. */ | |
90 | ||
91 | static CORE_ADDR first_object_file_end; | |
92 | ||
93 | /* pointer to the string table */ | |
94 | static char *strtbl; | |
95 | ||
96 | /* length of the string table */ | |
97 | static int strtbl_len; | |
98 | ||
99 | /* pointer to debug section */ | |
100 | static char *debugsec; | |
101 | ||
102 | /* pointer to the a.out symbol table */ | |
103 | static char *symtbl; | |
104 | ||
c84a96d7 JK |
105 | /* Number of symbols in symtbl. */ |
106 | static int symtbl_num_syms; | |
107 | ||
e38e0312 JG |
108 | /* initial symbol-table-debug-string vector length */ |
109 | ||
110 | #define INITIAL_STABVECTOR_LENGTH 40 | |
111 | ||
e38e0312 JG |
112 | /* Nonzero if within a function (so symbols should be local, |
113 | if nothing says specifically). */ | |
114 | ||
115 | int within_function; | |
116 | ||
117 | /* Local variables that hold the shift and mask values for the | |
118 | COFF file that we are currently reading. These come back to us | |
119 | from BFD, and are referenced by their macro names, as well as | |
120 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
121 | macros from ../internalcoff.h . */ | |
122 | ||
123 | static unsigned local_n_btshft; | |
124 | static unsigned local_n_tmask; | |
125 | ||
126 | #undef N_BTSHFT | |
127 | #define N_BTSHFT local_n_btshft | |
128 | #undef N_TMASK | |
129 | #define N_TMASK local_n_tmask | |
130 | ||
131 | /* Local variables that hold the sizes in the file of various COFF structures. | |
132 | (We only need to know this to read them from the file -- BFD will then | |
133 | translate the data in them, into `internal_xxx' structs in the right | |
134 | byte order, alignment, etc.) */ | |
135 | ||
136 | static unsigned local_symesz; | |
137 | ||
e38e0312 JG |
138 | struct coff_symfile_info { |
139 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
140 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
141 | }; | |
142 | ||
dd469789 JG |
143 | static struct complaint rsym_complaint = |
144 | {"Non-stab C_RSYM `%s' needs special handling", 0, 0}; | |
145 | ||
146 | static struct complaint storclass_complaint = | |
147 | {"Unexpected storage class: %d", 0, 0}; | |
148 | ||
149 | static struct complaint bf_notfound_complaint = | |
150 | {"line numbers off, `.bf' symbol not found", 0, 0}; | |
e38e0312 | 151 | |
1ab3bf1b | 152 | static void |
818de002 PB |
153 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
154 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 155 | |
1ab3bf1b JG |
156 | static void |
157 | free_debugsection PARAMS ((void)); | |
158 | ||
159 | static int | |
160 | init_debugsection PARAMS ((bfd *)); | |
161 | ||
162 | static int | |
d5931d79 | 163 | init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *)); |
1ab3bf1b JG |
164 | |
165 | static void | |
9b280a7f | 166 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
167 | |
168 | static void | |
9b280a7f | 169 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d | 170 | |
4ddd278f | 171 | #ifdef __STDC__ |
930acbe5 | 172 | struct section_offset; |
4ddd278f | 173 | #endif |
930acbe5 | 174 | |
80d68b1d | 175 | static void |
9b280a7f | 176 | xcoff_symfile_read PARAMS ((struct objfile *, struct section_offset *, int)); |
1ab3bf1b JG |
177 | |
178 | static void | |
9b280a7f | 179 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 180 | |
fe0b60b2 | 181 | static struct section_offsets * |
9b280a7f | 182 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 183 | |
1ab3bf1b | 184 | static int |
d5931d79 | 185 | init_lineno PARAMS ((bfd *, file_ptr, int)); |
1ab3bf1b | 186 | |
0eb22669 PS |
187 | static void |
188 | free_linetab PARAMS ((void)); | |
189 | ||
1ab3bf1b JG |
190 | static void |
191 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
192 | ||
3c02636b JK |
193 | static void |
194 | read_symbol PARAMS ((struct internal_syment *, int)); | |
195 | ||
1ab3bf1b | 196 | static int |
c84a96d7 | 197 | read_symbol_lineno PARAMS ((int)); |
1ab3bf1b JG |
198 | |
199 | static int | |
c84a96d7 | 200 | read_symbol_nvalue PARAMS ((int)); |
1ab3bf1b JG |
201 | |
202 | static struct symbol * | |
203 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
204 | ||
205 | static void | |
206 | read_xcoff_symtab PARAMS ((struct objfile *, int)); | |
207 | ||
1ab3bf1b JG |
208 | static void |
209 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
210 | ||
e38e0312 JG |
211 | /* add a given stab string into given stab vector. */ |
212 | ||
213 | static void | |
214 | add_stab_to_list (stabname, stabvector) | |
215 | char *stabname; | |
216 | struct pending_stabs **stabvector; | |
217 | { | |
218 | if ( *stabvector == NULL) { | |
219 | *stabvector = (struct pending_stabs *) | |
220 | xmalloc (sizeof (struct pending_stabs) + | |
221 | INITIAL_STABVECTOR_LENGTH * sizeof (char*)); | |
222 | (*stabvector)->count = 0; | |
223 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
224 | } | |
225 | else if ((*stabvector)->count >= (*stabvector)->length) { | |
226 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
227 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 228 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
229 | (*stabvector)->length * sizeof (char*)); |
230 | } | |
231 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
232 | } | |
194d98c6 JK |
233 | \f |
234 | /* Linenos are processed on a file-by-file basis. | |
235 | ||
236 | Two reasons: | |
237 | ||
238 | 1) xlc (IBM's native c compiler) postpones static function code | |
239 | emission to the end of a compilation unit. This way it can | |
240 | determine if those functions (statics) are needed or not, and | |
241 | can do some garbage collection (I think). This makes line | |
242 | numbers and corresponding addresses unordered, and we end up | |
243 | with a line table like: | |
244 | ||
245 | ||
246 | lineno addr | |
247 | foo() 10 0x100 | |
248 | 20 0x200 | |
249 | 30 0x300 | |
250 | ||
251 | foo3() 70 0x400 | |
252 | 80 0x500 | |
253 | 90 0x600 | |
254 | ||
255 | static foo2() | |
256 | 40 0x700 | |
257 | 50 0x800 | |
258 | 60 0x900 | |
259 | ||
260 | and that breaks gdb's binary search on line numbers, if the | |
261 | above table is not sorted on line numbers. And that sort | |
262 | should be on function based, since gcc can emit line numbers | |
263 | like: | |
264 | ||
265 | 10 0x100 - for the init/test part of a for stmt. | |
266 | 20 0x200 | |
267 | 30 0x300 | |
268 | 10 0x400 - for the increment part of a for stmt. | |
e38e0312 | 269 | |
194d98c6 | 270 | arrange_linetable() will do this sorting. |
e38e0312 | 271 | |
194d98c6 | 272 | 2) aix symbol table might look like: |
818de002 | 273 | |
194d98c6 JK |
274 | c_file // beginning of a new file |
275 | .bi // beginning of include file | |
276 | .ei // end of include file | |
277 | .bi | |
278 | .ei | |
818de002 | 279 | |
194d98c6 JK |
280 | basically, .bi/.ei pairs do not necessarily encapsulate |
281 | their scope. They need to be recorded, and processed later | |
282 | on when we come the end of the compilation unit. | |
283 | Include table (inclTable) and process_linenos() handle | |
284 | that. */ | |
818de002 PB |
285 | |
286 | /* compare line table entry addresses. */ | |
287 | ||
194d98c6 | 288 | static int |
818de002 | 289 | compare_lte (lte1, lte2) |
194d98c6 | 290 | struct linetable_entry *lte1, *lte2; |
818de002 PB |
291 | { |
292 | return lte1->pc - lte2->pc; | |
293 | } | |
294 | ||
295 | /* Give a line table with function entries are marked, arrange its functions | |
296 | in assending order and strip off function entry markers and return it in | |
297 | a newly created table. If the old one is good enough, return the old one. */ | |
c438b3af JK |
298 | /* FIXME: I think all this stuff can be replaced by just passing |
299 | sort_linevec = 1 to end_symtab. */ | |
818de002 PB |
300 | |
301 | static struct linetable * | |
302 | arrange_linetable (oldLineTb) | |
303 | struct linetable *oldLineTb; /* old linetable */ | |
304 | { | |
305 | int ii, jj, | |
306 | newline, /* new line count */ | |
307 | function_count; /* # of functions */ | |
308 | ||
309 | struct linetable_entry *fentry; /* function entry vector */ | |
310 | int fentry_size; /* # of function entries */ | |
311 | struct linetable *newLineTb; /* new line table */ | |
312 | ||
313 | #define NUM_OF_FUNCTIONS 20 | |
314 | ||
315 | fentry_size = NUM_OF_FUNCTIONS; | |
316 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 317 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
318 | |
319 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
320 | ||
321 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
322 | ||
323 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
324 | fentry_size *= 2; | |
325 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 326 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
327 | } |
328 | fentry[function_count].line = ii; | |
329 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
330 | ++function_count; | |
331 | } | |
332 | } | |
333 | ||
334 | if (function_count == 0) { | |
335 | free (fentry); | |
336 | return oldLineTb; | |
337 | } | |
338 | else if (function_count > 1) | |
339 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
340 | ||
341 | /* allocate a new line table. */ | |
ecfd2b60 JK |
342 | newLineTb = (struct linetable *) |
343 | xmalloc | |
344 | (sizeof (struct linetable) + | |
345 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
818de002 PB |
346 | |
347 | /* if line table does not start with a function beginning, copy up until | |
348 | a function begin. */ | |
349 | ||
350 | newline = 0; | |
351 | if (oldLineTb->item[0].line != 0) | |
352 | for (newline=0; | |
353 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
354 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
355 | ||
356 | /* Now copy function lines one by one. */ | |
357 | ||
358 | for (ii=0; ii < function_count; ++ii) { | |
359 | for (jj = fentry[ii].line + 1; | |
360 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
361 | ++jj, ++newline) | |
362 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
363 | } | |
364 | free (fentry); | |
365 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
366 | return newLineTb; | |
367 | } | |
368 | ||
369 | ||
370 | ||
371 | /* We try to detect the beginning of a compilation unit. That info will | |
372 | be used as an entry in line number recording routines (enter_line_range) */ | |
373 | ||
374 | static unsigned first_fun_line_offset; | |
375 | static unsigned first_fun_bf; | |
376 | ||
377 | #define mark_first_line(OFFSET, SYMNUM) \ | |
378 | if (!first_fun_line_offset) { \ | |
379 | first_fun_line_offset = OFFSET; \ | |
380 | first_fun_bf = SYMNUM; \ | |
381 | } | |
382 | ||
383 | ||
384 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
385 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
386 | we will determine if we should create additional symtab's to | |
387 | represent if (the include files. */ | |
388 | ||
389 | ||
390 | typedef struct _inclTable { | |
391 | char *name; /* include filename */ | |
2aefe6e4 JK |
392 | |
393 | /* Offsets to the line table. end points to the last entry which is | |
394 | part of this include file. */ | |
395 | int begin, end; | |
396 | ||
818de002 PB |
397 | struct subfile *subfile; |
398 | unsigned funStartLine; /* start line # of its function */ | |
399 | } InclTable; | |
400 | ||
401 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
402 | static InclTable *inclTable; /* global include table */ | |
403 | static int inclIndx; /* last entry to table */ | |
404 | static int inclLength; /* table length */ | |
405 | static int inclDepth; /* nested include depth */ | |
406 | ||
407 | ||
408 | static void | |
409 | record_include_begin (cs) | |
410 | struct coff_symbol *cs; | |
411 | { | |
818de002 | 412 | if (inclDepth) |
486b440e JK |
413 | { |
414 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
415 | of course, but in corresponding .s files.). */ | |
416 | ||
67240bb8 JK |
417 | /* This can happen with old versions of GCC. |
418 | GCC 2.3.3-930426 does not exhibit this on a test case which | |
419 | a user said produced the message for him. */ | |
b646b438 | 420 | static struct complaint msg = {"Nested C_BINCL symbols", 0, 0}; |
486b440e JK |
421 | complain (&msg); |
422 | } | |
818de002 PB |
423 | ++inclDepth; |
424 | ||
425 | /* allocate an include file, or make room for the new entry */ | |
426 | if (inclLength == 0) { | |
427 | inclTable = (InclTable*) | |
428 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
4ed97c9a | 429 | memset (inclTable, '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
818de002 PB |
430 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
431 | inclIndx = 0; | |
432 | } | |
433 | else if (inclIndx >= inclLength) { | |
434 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
435 | inclTable = (InclTable*) | |
436 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
4ed97c9a RP |
437 | memset (inclTable+inclLength-INITIAL_INCLUDE_TABLE_LENGTH, |
438 | '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
818de002 PB |
439 | } |
440 | ||
441 | inclTable [inclIndx].name = cs->c_name; | |
442 | inclTable [inclIndx].begin = cs->c_value; | |
443 | } | |
444 | ||
445 | ||
446 | static void | |
447 | record_include_end (cs) | |
448 | struct coff_symbol *cs; | |
449 | { | |
450 | InclTable *pTbl; | |
451 | ||
452 | if (inclDepth == 0) | |
486b440e | 453 | { |
b646b438 | 454 | static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; |
486b440e JK |
455 | complain (&msg); |
456 | } | |
818de002 PB |
457 | |
458 | pTbl = &inclTable [inclIndx]; | |
459 | pTbl->end = cs->c_value; | |
460 | ||
461 | --inclDepth; | |
462 | ++inclIndx; | |
463 | } | |
464 | ||
465 | ||
818de002 PB |
466 | /* given the start and end addresses of a compilation unit (or a csect, at times) |
467 | process its lines and create appropriate line vectors. */ | |
468 | ||
469 | static void | |
470 | process_linenos (start, end) | |
471 | CORE_ADDR start, end; | |
472 | { | |
473 | char *pp; | |
474 | int offset, ii; | |
475 | ||
476 | struct subfile main_subfile; /* subfile structure for the main | |
477 | compilation unit. */ | |
478 | ||
479 | /* in the main source file, any time we see a function entry, we reset | |
480 | this variable to function's absolute starting line number. All the | |
481 | following line numbers in the function are relative to this, and | |
482 | we record absolute line numbers in record_line(). */ | |
483 | ||
484 | int main_source_baseline = 0; | |
485 | ||
486 | ||
487 | unsigned *firstLine; | |
488 | CORE_ADDR addr; | |
489 | ||
490 | if (!(offset = first_fun_line_offset)) | |
491 | goto return_after_cleanup; | |
492 | ||
4ed97c9a | 493 | memset (&main_subfile, '\0', sizeof (main_subfile)); |
818de002 PB |
494 | first_fun_line_offset = 0; |
495 | ||
496 | if (inclIndx == 0) | |
556f3d90 PB |
497 | /* All source lines were in the main source file. None in include files. */ |
498 | ||
818de002 PB |
499 | enter_line_range (&main_subfile, offset, 0, start, end, |
500 | &main_source_baseline); | |
501 | ||
502 | /* else, there was source with line numbers in include files */ | |
503 | else { | |
504 | ||
505 | main_source_baseline = 0; | |
506 | for (ii=0; ii < inclIndx; ++ii) { | |
507 | ||
508 | struct subfile *tmpSubfile; | |
509 | ||
510 | /* if there is main file source before include file, enter it. */ | |
511 | if (offset < inclTable[ii].begin) { | |
512 | enter_line_range | |
513 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, start, 0, | |
514 | &main_source_baseline); | |
515 | } | |
516 | ||
517 | /* Have a new subfile for the include file */ | |
518 | ||
519 | tmpSubfile = inclTable[ii].subfile = (struct subfile*) | |
520 | xmalloc (sizeof (struct subfile)); | |
521 | ||
4ed97c9a | 522 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
818de002 PB |
523 | firstLine = &(inclTable[ii].funStartLine); |
524 | ||
525 | /* enter include file's lines now. */ | |
526 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
527 | inclTable[ii].end, start, 0, firstLine); | |
528 | ||
529 | offset = inclTable[ii].end + LINESZ; | |
530 | } | |
531 | ||
532 | /* all the include files' line have been processed at this point. Now, | |
533 | enter remaining lines of the main file, if any left. */ | |
534 | if (offset < (linetab_offset + linetab_size + 1 - LINESZ)) { | |
535 | enter_line_range (&main_subfile, offset, 0, start, end, | |
536 | &main_source_baseline); | |
537 | } | |
538 | } | |
539 | ||
540 | /* Process main file's line numbers. */ | |
541 | if (main_subfile.line_vector) { | |
542 | struct linetable *lineTb, *lv; | |
543 | ||
544 | lv = main_subfile.line_vector; | |
545 | ||
546 | /* Line numbers are not necessarily ordered. xlc compilation will | |
547 | put static function to the end. */ | |
548 | ||
549 | lineTb = arrange_linetable (lv); | |
550 | if (lv == lineTb) { | |
551 | current_subfile->line_vector = (struct linetable *) | |
552 | xrealloc (lv, (sizeof (struct linetable) | |
553 | + lv->nitems * sizeof (struct linetable_entry))); | |
554 | ||
555 | } | |
556 | else { | |
557 | free (lv); | |
558 | current_subfile->line_vector = lineTb; | |
559 | } | |
560 | ||
561 | current_subfile->line_vector_length = | |
562 | current_subfile->line_vector->nitems; | |
556f3d90 | 563 | } |
818de002 PB |
564 | |
565 | /* Now, process included files' line numbers. */ | |
566 | ||
567 | for (ii=0; ii < inclIndx; ++ii) { | |
568 | ||
569 | if ( (inclTable[ii].subfile)->line_vector) { /* Useless if!!! FIXMEmgo */ | |
570 | struct linetable *lineTb, *lv; | |
571 | ||
572 | lv = (inclTable[ii].subfile)->line_vector; | |
573 | ||
574 | /* Line numbers are not necessarily ordered. xlc compilation will | |
575 | put static function to the end. */ | |
576 | ||
577 | lineTb = arrange_linetable (lv); | |
578 | ||
579 | push_subfile (); | |
580 | ||
581 | /* For the same include file, we might want to have more than one subfile. | |
582 | This happens if we have something like: | |
583 | ||
584 | ...... | |
585 | #include "foo.h" | |
586 | ...... | |
587 | #include "foo.h" | |
588 | ...... | |
589 | ||
590 | while foo.h including code in it. (stupid but possible) | |
591 | Since start_subfile() looks at the name and uses an existing one if finds, | |
592 | we need to provide a fake name and fool it. */ | |
593 | ||
594 | /* start_subfile (inclTable[ii].name, (char*)0); */ | |
595 | start_subfile (" ?", (char*)0); | |
6d4ea3a5 RP |
596 | free (current_subfile->name); |
597 | current_subfile->name = strdup (inclTable[ii].name); | |
818de002 PB |
598 | |
599 | if (lv == lineTb) { | |
600 | current_subfile->line_vector = (struct linetable *) | |
601 | xrealloc (lv, (sizeof (struct linetable) | |
602 | + lv->nitems * sizeof (struct linetable_entry))); | |
603 | ||
604 | } | |
605 | else { | |
606 | free (lv); | |
607 | current_subfile->line_vector = lineTb; | |
608 | } | |
609 | ||
610 | current_subfile->line_vector_length = | |
611 | current_subfile->line_vector->nitems; | |
612 | start_subfile (pop_subfile (), (char*)0); | |
613 | } | |
614 | } | |
818de002 PB |
615 | |
616 | return_after_cleanup: | |
617 | ||
618 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
619 | inclIndx = 0; | |
620 | ||
621 | /* start with a fresh subfile structure for the next file. */ | |
4ed97c9a | 622 | memset (&main_subfile, '\0', sizeof (struct subfile)); |
818de002 PB |
623 | } |
624 | ||
625 | void | |
626 | aix_process_linenos () | |
627 | { | |
628 | /* process line numbers and enter them into line vector */ | |
629 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
630 | } | |
631 | ||
632 | ||
e38e0312 JG |
633 | /* Enter a given range of lines into the line vector. |
634 | can be called in the following two ways: | |
818de002 | 635 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
2aefe6e4 JK |
636 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) |
637 | ||
638 | endoffset points to the last line table entry that we should pay | |
639 | attention to. */ | |
e38e0312 JG |
640 | |
641 | static void | |
818de002 PB |
642 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, firstLine) |
643 | struct subfile *subfile; | |
e38e0312 | 644 | unsigned beginoffset, endoffset; /* offsets to line table */ |
818de002 | 645 | CORE_ADDR startaddr, endaddr; |
e38e0312 JG |
646 | unsigned *firstLine; |
647 | { | |
648 | char *pp, *limit; | |
649 | CORE_ADDR addr; | |
818de002 PB |
650 | |
651 | /* Do Byte swapping, if needed. FIXME! */ | |
652 | #define P_LINENO(PP) (*(unsigned short*)((struct external_lineno*)(PP))->l_lnno) | |
653 | #define P_LINEADDR(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_paddr) | |
654 | #define P_LINESYM(PP) (*(long*)((struct external_lineno*)(PP))->l_addr.l_symndx) | |
e38e0312 JG |
655 | |
656 | pp = &linetab [beginoffset - linetab_offset]; | |
2aefe6e4 JK |
657 | if (endoffset != 0 && endoffset - linetab_offset >= linetab_size) |
658 | { | |
659 | static struct complaint msg = | |
660 | {"Bad line table offset in C_EINCL directive", 0, 0}; | |
661 | complain (&msg); | |
662 | return; | |
663 | } | |
e38e0312 JG |
664 | limit = endoffset ? &linetab [endoffset - linetab_offset] |
665 | : &linetab [linetab_size -1]; | |
666 | ||
667 | while (pp <= limit) { | |
668 | ||
e38e0312 | 669 | /* find the address this line represents */ |
818de002 | 670 | addr = P_LINENO(pp) ? |
c84a96d7 | 671 | P_LINEADDR(pp) : read_symbol_nvalue (P_LINESYM(pp)); |
e38e0312 | 672 | |
b60b2e3e | 673 | if (addr < startaddr || (endaddr && addr >= endaddr)) |
e38e0312 JG |
674 | return; |
675 | ||
818de002 | 676 | if (P_LINENO(pp) == 0) { |
c84a96d7 | 677 | *firstLine = read_symbol_lineno (P_LINESYM(pp)); |
818de002 | 678 | record_line (subfile, 0, addr); |
e38e0312 JG |
679 | --(*firstLine); |
680 | } | |
681 | else | |
818de002 PB |
682 | record_line (subfile, *firstLine + P_LINENO(pp), addr); |
683 | ||
684 | pp += LINESZ; | |
685 | } | |
686 | } | |
687 | ||
688 | typedef struct { | |
689 | int fsize; /* file size */ | |
690 | int fixedparms; /* number of fixed parms */ | |
691 | int floatparms; /* number of float parms */ | |
692 | unsigned int parminfo; /* parameter info. | |
693 | See /usr/include/sys/debug.h | |
694 | tbtable_ext.parminfo */ | |
695 | int framesize; /* function frame size */ | |
696 | } TracebackInfo; | |
697 | ||
698 | ||
699 | /* Given a function symbol, return its traceback information. */ | |
700 | ||
701 | TracebackInfo * | |
702 | retrieve_tracebackinfo (abfd, textsec, cs) | |
703 | bfd *abfd; | |
704 | sec_ptr textsec; | |
705 | struct coff_symbol *cs; | |
706 | { | |
707 | #define TBTABLE_BUFSIZ 2000 | |
818de002 PB |
708 | |
709 | static TracebackInfo tbInfo; | |
710 | struct tbtable *ptb; | |
711 | ||
712 | static char buffer [TBTABLE_BUFSIZ]; | |
713 | ||
714 | int *pinsn; | |
715 | int bytesread=0; /* total # of bytes read so far */ | |
716 | int bufferbytes; /* number of bytes in the buffer */ | |
717 | ||
718 | int functionstart = cs->c_value - textsec->vma; | |
719 | ||
4ed97c9a | 720 | memset (&tbInfo, '\0', sizeof (tbInfo)); |
818de002 PB |
721 | |
722 | /* keep reading blocks of data from the text section, until finding a zero | |
723 | word and a traceback table. */ | |
724 | ||
2aefe6e4 JK |
725 | /* Note: The logical thing way to write this code would be to assign |
726 | to bufferbytes within the while condition. But that triggers a | |
727 | compiler (xlc in AIX 3.2) bug, so simplify it... */ | |
728 | bufferbytes = | |
729 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
730 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
731 | while (bufferbytes | |
732 | && (bfd_get_section_contents | |
733 | (abfd, textsec, buffer, | |
734 | (file_ptr)(functionstart + bytesread), bufferbytes))) | |
818de002 PB |
735 | { |
736 | bytesread += bufferbytes; | |
737 | pinsn = (int*) buffer; | |
738 | ||
739 | /* if this is the first time we filled the buffer, retrieve function | |
740 | framesize info. */ | |
741 | ||
742 | if (bytesread == bufferbytes) { | |
743 | ||
744 | /* skip over unrelated instructions */ | |
745 | ||
746 | if (*pinsn == 0x7c0802a6) /* mflr r0 */ | |
747 | ++pinsn; | |
748 | if ((*pinsn & 0xfc00003e) == 0x7c000026) /* mfcr Rx */ | |
749 | ++pinsn; | |
750 | if ((*pinsn & 0xfc000000) == 0x48000000) /* bl foo, save fprs */ | |
751 | ++pinsn; | |
752 | if ((*pinsn & 0xfc1f0000) == 0xbc010000) /* stm Rx, NUM(r1) */ | |
753 | ++pinsn; | |
754 | ||
755 | do { | |
756 | int tmp = (*pinsn >> 16) & 0xffff; | |
757 | ||
758 | if (tmp == 0x9421) { /* stu r1, NUM(r1) */ | |
759 | tbInfo.framesize = 0x10000 - (*pinsn & 0xffff); | |
760 | break; | |
761 | } | |
762 | else if ((*pinsn == 0x93e1fffc) || /* st r31,-4(r1) */ | |
763 | (tmp == 0x9001)) /* st r0, NUM(r1) */ | |
764 | ; | |
765 | /* else, could not find a frame size. */ | |
766 | else | |
767 | return NULL; | |
768 | ||
769 | } while (++pinsn && *pinsn); | |
770 | ||
771 | if (!tbInfo.framesize) | |
772 | return NULL; | |
2aefe6e4 | 773 | |
818de002 PB |
774 | } |
775 | ||
776 | /* look for a zero word. */ | |
777 | ||
778 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
779 | ++pinsn; | |
780 | ||
781 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
782 | continue; | |
e38e0312 | 783 | |
818de002 PB |
784 | if (*pinsn == 0) { |
785 | ||
786 | /* function size is the amount of bytes we have skipped so far. */ | |
787 | tbInfo.fsize = bytesread - (buffer + bufferbytes - (char*)pinsn); | |
788 | ||
789 | ++pinsn; | |
790 | ||
791 | /* if we don't have the whole traceback table in the buffer, re-read | |
792 | the whole thing. */ | |
793 | ||
3e57da38 JK |
794 | /* This is how much to read to get the traceback table. |
795 | 8 bytes of the traceback table are always present, plus we | |
796 | look at parminfo. */ | |
797 | #define MIN_TBTABSIZ 12 | |
798 | ||
818de002 PB |
799 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { |
800 | ||
801 | /* In case if we are *very* close to the end of the text section | |
802 | and cannot read properly from that point on, abort by returning | |
803 | NULL. | |
3e57da38 JK |
804 | |
805 | This could happen if the traceback table is only 8 bytes, | |
806 | but we try to read 12 bytes of it. | |
818de002 PB |
807 | Handle this case more graciously -- FIXME */ |
808 | ||
809 | if (!bfd_get_section_contents ( | |
810 | abfd, textsec, buffer, | |
811 | (file_ptr)(functionstart + | |
812 | bytesread - (buffer + bufferbytes - (char*)pinsn)),MIN_TBTABSIZ)) | |
813 | { printf ("Abnormal return!..\n"); return NULL; } | |
814 | ||
815 | ptb = (struct tbtable *)buffer; | |
816 | } | |
817 | else | |
818 | ptb = (struct tbtable *)pinsn; | |
819 | ||
820 | tbInfo.fixedparms = ptb->tb.fixedparms; | |
821 | tbInfo.floatparms = ptb->tb.floatparms; | |
822 | tbInfo.parminfo = ptb->tb_ext.parminfo; | |
823 | return &tbInfo; | |
824 | } | |
2aefe6e4 JK |
825 | bufferbytes = |
826 | (TBTABLE_BUFSIZ < (textsec->_raw_size - functionstart - bytesread) ? | |
827 | TBTABLE_BUFSIZ : (textsec->_raw_size - functionstart - bytesread)); | |
818de002 PB |
828 | } |
829 | return NULL; | |
830 | } | |
831 | ||
832 | #if 0 | |
833 | /* Given a function symbol, return a pointer to its traceback table. */ | |
834 | ||
835 | struct tbtable * | |
836 | retrieve_traceback (abfd, textsec, cs, size) | |
837 | bfd *abfd; | |
838 | sec_ptr textsec; | |
839 | struct coff_symbol *cs; | |
840 | int *size; /* return function size */ | |
841 | { | |
842 | #define TBTABLE_BUFSIZ 2000 | |
843 | #define MIN_TBTABSIZ 50 /* minimum buffer size to hold a | |
844 | traceback table. */ | |
845 | ||
846 | static char buffer [TBTABLE_BUFSIZ]; | |
847 | ||
848 | int *pinsn; | |
849 | int bytesread=0; /* total # of bytes read so far */ | |
850 | int bufferbytes; /* number of bytes in the buffer */ | |
851 | ||
852 | int functionstart = cs->c_value - textsec->filepos + textsec->vma; | |
853 | *size = 0; | |
854 | ||
855 | /* keep reading blocks of data from the text section, until finding a zero | |
856 | word and a traceback table. */ | |
857 | ||
858 | while (bfd_get_section_contents (abfd, textsec, buffer, | |
859 | (file_ptr)(functionstart + bytesread), | |
860 | bufferbytes = ( | |
861 | (TBTABLE_BUFSIZ < (textsec->size - functionstart - bytesread)) ? | |
862 | TBTABLE_BUFSIZ : (textsec->size - functionstart - bytesread)))) | |
863 | { | |
864 | bytesread += bufferbytes; | |
865 | pinsn = (int*) buffer; | |
866 | ||
867 | /* look for a zero word. */ | |
868 | ||
869 | while (*pinsn && (pinsn < (int*)(buffer + bufferbytes - sizeof(int)))) | |
870 | ++pinsn; | |
871 | ||
872 | if (pinsn >= (int*)(buffer + bufferbytes)) | |
873 | continue; | |
874 | ||
875 | if (*pinsn == 0) { | |
876 | ||
877 | /* function size is the amount of bytes we have skipped so far. */ | |
878 | *size = bytesread - (buffer + bufferbytes - pinsn); | |
879 | ||
880 | ++pinsn; | |
881 | ||
882 | /* if we don't have the whole traceback table in the buffer, re-read | |
883 | the whole thing. */ | |
884 | ||
885 | if ((char*)pinsn > (buffer + bufferbytes - MIN_TBTABSIZ)) { | |
886 | ||
887 | /* In case if we are *very* close to the end of the text section | |
888 | and cannot read properly from that point on, abort for now. | |
889 | Handle this case more graciously -- FIXME */ | |
890 | ||
891 | if (!bfd_get_section_contents ( | |
892 | abfd, textsec, buffer, | |
893 | (file_ptr)(functionstart + | |
894 | bytesread - (buffer + bufferbytes - pinsn)),MIN_TBTABSIZ)) | |
895 | /* abort (); */ { printf ("abort!!!\n"); return NULL; } | |
896 | ||
897 | return (struct tbtable *)buffer; | |
898 | } | |
899 | else | |
900 | return (struct tbtable *)pinsn; | |
901 | } | |
e38e0312 | 902 | } |
818de002 | 903 | return NULL; |
e38e0312 | 904 | } |
818de002 PB |
905 | #endif /* 0 */ |
906 | ||
907 | ||
e38e0312 JG |
908 | |
909 | ||
910 | /* Save the vital information for use when closing off the current file. | |
911 | NAME is the file name the symbols came from, START_ADDR is the first | |
912 | text address for the file, and SIZE is the number of bytes of text. */ | |
913 | ||
914 | #define complete_symtab(name, start_addr) { \ | |
915 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 916 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
917 | } |
918 | ||
919 | ||
920 | /* Refill the symbol table input buffer | |
921 | and set the variables that control fetching entries from it. | |
922 | Reports an error if no data available. | |
923 | This function can read past the end of the symbol table | |
924 | (into the string table) but this does no harm. */ | |
925 | ||
926 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
927 | than functions. */ | |
928 | ||
3c02636b | 929 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, ALLOCED, SECTION) \ |
e38e0312 JG |
930 | { \ |
931 | char *namestr; \ | |
932 | if (ALLOCED) \ | |
933 | namestr = (NAME) + 1; \ | |
934 | else { \ | |
1eeba686 PB |
935 | (NAME) = namestr = \ |
936 | obstack_copy0 (&objfile->symbol_obstack, (NAME) + 1, strlen ((NAME)+1)); \ | |
e38e0312 JG |
937 | (ALLOCED) = 1; \ |
938 | } \ | |
3c02636b JK |
939 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ |
940 | (char *)NULL, (SECTION)); \ | |
818de002 | 941 | misc_func_recorded = 1; \ |
e38e0312 JG |
942 | } |
943 | ||
944 | ||
e5eeaaf8 JG |
945 | /* A parameter template, used by ADD_PARM_TO_PENDING. It is initialized |
946 | in our initializer function at the bottom of the file, to avoid | |
947 | dependencies on the exact "struct symbol" format. */ | |
818de002 | 948 | |
e5eeaaf8 | 949 | static struct symbol parmsym; |
818de002 PB |
950 | |
951 | /* Add a parameter to a given pending symbol list. */ | |
952 | ||
953 | #define ADD_PARM_TO_PENDING(PARM, VALUE, PTYPE, PENDING_SYMBOLS) \ | |
954 | { \ | |
955 | PARM = (struct symbol *) \ | |
956 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ | |
957 | *(PARM) = parmsym; \ | |
958 | SYMBOL_TYPE (PARM) = PTYPE; \ | |
959 | SYMBOL_VALUE (PARM) = VALUE; \ | |
960 | add_symbol_to_list (PARM, &PENDING_SYMBOLS); \ | |
961 | } | |
962 | ||
e38e0312 | 963 | |
9b280a7f | 964 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
965 | nested. At any given time, a symbol can only be in one static block. |
966 | This is the base address of current static block, zero if non exists. */ | |
967 | ||
968 | static int static_block_base = 0; | |
969 | ||
3c02636b JK |
970 | /* Section number for the current static block. */ |
971 | ||
972 | static int static_block_section = -1; | |
973 | ||
e38e0312 JG |
974 | /* true if space for symbol name has been allocated. */ |
975 | ||
976 | static int symname_alloced = 0; | |
977 | ||
978 | /* read the whole symbol table of a given bfd. */ | |
979 | ||
1ab3bf1b | 980 | static void |
e38e0312 JG |
981 | read_xcoff_symtab (objfile, nsyms) |
982 | struct objfile *objfile; /* Object file we're reading from */ | |
983 | int nsyms; /* # of symbols */ | |
984 | { | |
985 | bfd *abfd = objfile->obfd; | |
e38e0312 JG |
986 | char *raw_symbol; /* Pointer into raw seething symbol table */ |
987 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ | |
818de002 PB |
988 | sec_ptr textsec; /* Pointer to text section */ |
989 | TracebackInfo *ptb; /* Pointer to traceback table */ | |
990 | ||
e38e0312 JG |
991 | struct internal_syment symbol[1]; |
992 | union internal_auxent main_aux[1]; | |
993 | struct coff_symbol cs[1]; | |
994 | CORE_ADDR file_start_addr = 0; | |
995 | CORE_ADDR file_end_addr = 0; | |
996 | ||
997 | int next_file_symnum = -1; | |
998 | int just_started = 1; | |
999 | int depth = 0; | |
556f3d90 | 1000 | int toc_offset = 0; /* toc offset value in data section. */ |
e38e0312 | 1001 | int val; |
e38e0312 JG |
1002 | int fcn_last_line; |
1003 | int fcn_start_addr; | |
1004 | long fcn_line_offset; | |
1005 | size_t size; | |
1006 | ||
1eeba686 PB |
1007 | struct coff_symbol fcn_stab_saved; |
1008 | ||
e38e0312 JG |
1009 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
1010 | union internal_auxent fcn_aux_saved; | |
818de002 | 1011 | struct type *fcn_type_saved = NULL; |
e38e0312 JG |
1012 | struct context_stack *new; |
1013 | ||
1014 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
1015 | |
1016 | char *last_csect_name; /* last seen csect's name and value */ | |
1017 | CORE_ADDR last_csect_val; | |
3c02636b | 1018 | int last_csect_sec; |
818de002 | 1019 | int misc_func_recorded; /* true if any misc. function */ |
e38e0312 | 1020 | |
1ab3bf1b JG |
1021 | current_objfile = objfile; |
1022 | ||
e38e0312 JG |
1023 | /* Get the appropriate COFF "constants" related to the file we're handling. */ |
1024 | N_TMASK = coff_data (abfd)->local_n_tmask; | |
1025 | N_BTSHFT = coff_data (abfd)->local_n_btshft; | |
1026 | local_symesz = coff_data (abfd)->local_symesz; | |
1027 | ||
d07734e3 | 1028 | last_source_file = NULL; |
818de002 PB |
1029 | last_csect_name = 0; |
1030 | last_csect_val = 0; | |
1031 | misc_func_recorded = 0; | |
e38e0312 | 1032 | |
d07734e3 | 1033 | start_stabs (); |
e38e0312 JG |
1034 | start_symtab (filestring, (char *)NULL, file_start_addr); |
1035 | symnum = 0; | |
1036 | first_object_file_end = 0; | |
1037 | ||
1038 | /* Allocate space for the entire symbol table at once, and read it | |
1039 | all in. The bfd is already positioned at the beginning of | |
1040 | the symbol table. */ | |
1041 | ||
1042 | size = coff_data (abfd)->local_symesz * nsyms; | |
1043 | symtbl = xmalloc (size); | |
c84a96d7 | 1044 | symtbl_num_syms = nsyms; |
e38e0312 JG |
1045 | |
1046 | val = bfd_read (symtbl, size, 1, abfd); | |
1047 | if (val != size) | |
1048 | perror_with_name ("reading symbol table"); | |
1049 | ||
1050 | raw_symbol = symtbl; | |
1051 | ||
818de002 PB |
1052 | textsec = bfd_get_section_by_name (abfd, ".text"); |
1053 | if (!textsec) { | |
1054 | printf ("Unable to locate text section!\n"); | |
1055 | } | |
1056 | ||
e38e0312 JG |
1057 | while (symnum < nsyms) { |
1058 | ||
1059 | QUIT; /* make this command interruptable. */ | |
1060 | ||
1061 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
1062 | /* read one symbol into `cs' structure. After processing the whole symbol | |
1063 | table, only string table will be kept in memory, symbol table and debug | |
9b280a7f | 1064 | section of xcoff will be freed. Thus we can mark symbols with names |
e38e0312 JG |
1065 | in string table as `alloced'. */ |
1066 | { | |
1067 | int ii; | |
1068 | ||
1069 | /* Swap and align the symbol into a reasonable C structure. */ | |
1070 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1071 | ||
1072 | cs->c_symnum = symnum; | |
1073 | cs->c_nsyms = symbol->n_numaux; | |
1074 | if (symbol->n_zeroes) { | |
1075 | symname_alloced = 0; | |
1076 | /* We must use the original, unswapped, name here so the name field | |
1077 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1078 | we use the new field, it gets overwritten for each symbol. */ | |
1079 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
f635bd47 JK |
1080 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1081 | '\0'-terminated. */ | |
1082 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
786757a9 JK |
1083 | { |
1084 | char *p; | |
f635bd47 JK |
1085 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); |
1086 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1087 | p[E_SYMNMLEN] = '\0'; | |
786757a9 JK |
1088 | cs->c_name = p; |
1089 | symname_alloced = 1; | |
1090 | } | |
e38e0312 JG |
1091 | } else if (symbol->n_sclass & 0x80) { |
1092 | cs->c_name = debugsec + symbol->n_offset; | |
1093 | symname_alloced = 0; | |
1094 | } else { /* in string table */ | |
1095 | cs->c_name = strtbl + (int)symbol->n_offset; | |
1096 | symname_alloced = 1; | |
1097 | } | |
1098 | cs->c_value = symbol->n_value; | |
ef5b809c | 1099 | cs->c_sclass = symbol->n_sclass; |
e38e0312 JG |
1100 | cs->c_secnum = symbol->n_scnum; |
1101 | cs->c_type = (unsigned)symbol->n_type; | |
1102 | ||
1103 | raw_symbol += coff_data (abfd)->local_symesz; | |
1104 | ++symnum; | |
1105 | ||
1106 | raw_auxptr = raw_symbol; /* Save addr of first aux entry */ | |
1107 | ||
1108 | /* Skip all the auxents associated with this symbol. */ | |
1109 | for (ii = symbol->n_numaux; ii; --ii ) { | |
1110 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1111 | ++symnum; | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* if symbol name starts with ".$" or "$", ignore it. */ | |
1116 | if (cs->c_name[0] == '$' || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1117 | continue; | |
1118 | ||
1119 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) { | |
1120 | if (last_source_file) | |
d07734e3 | 1121 | { |
3c02636b | 1122 | end_symtab (cur_src_end_addr, 1, 0, objfile, textsec->target_index); |
d07734e3 FF |
1123 | end_stabs (); |
1124 | } | |
e38e0312 | 1125 | |
d07734e3 | 1126 | start_stabs (); |
e38e0312 JG |
1127 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); |
1128 | cur_src_end_addr = first_object_file_end; | |
1129 | /* done with all files, everything from here on is globals */ | |
1130 | } | |
1131 | ||
1132 | /* if explicitly specified as a function, treat is as one. */ | |
1133 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) { | |
1134 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1135 | main_aux); | |
1136 | goto function_entry_point; | |
1137 | } | |
1138 | ||
1139 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) && cs->c_nsyms == 1) | |
1140 | { | |
1141 | /* dealing with a symbol with a csect entry. */ | |
1142 | ||
1143 | # define CSECT(PP) ((PP)->x_csect) | |
1144 | # define CSECT_LEN(PP) (CSECT(PP).x_scnlen) | |
1145 | # define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1146 | # define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1147 | # define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1148 | ||
1149 | /* Convert the auxent to something we can access. */ | |
1150 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1151 | main_aux); | |
1152 | ||
1153 | switch (CSECT_SMTYP (main_aux)) { | |
1154 | ||
1155 | case XTY_ER : | |
1156 | continue; /* ignore all external references. */ | |
1157 | ||
1158 | case XTY_SD : /* a section description. */ | |
1159 | { | |
1160 | switch (CSECT_SCLAS (main_aux)) { | |
1161 | ||
1162 | case XMC_PR : /* a `.text' csect. */ | |
1163 | { | |
1164 | ||
860b4da3 JK |
1165 | /* A program csect is seen. We have to allocate one |
1166 | symbol table for each program csect. Normally gdb | |
1167 | prefers one symtab for each source file. In case | |
1168 | of AIX, one source file might include more than one | |
1169 | [PR] csect, and they don't have to be adjacent in | |
1170 | terms of the space they occupy in memory. Thus, one | |
1171 | single source file might get fragmented in the | |
1172 | memory and gdb's file start and end address | |
1173 | approach does not work! GCC (and I think xlc) seem | |
1174 | to put all the code in the unnamed program csect. */ | |
e38e0312 | 1175 | |
818de002 PB |
1176 | if (last_csect_name) { |
1177 | ||
1178 | /* if no misc. function recorded in the last seen csect, enter | |
1179 | it as a function. This will take care of functions like | |
1180 | strcmp() compiled by xlc. */ | |
1181 | ||
1182 | if (!misc_func_recorded) { | |
1183 | int alloced = 0; | |
1184 | RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val, | |
3c02636b | 1185 | mst_text, alloced, last_csect_sec); |
818de002 PB |
1186 | } |
1187 | ||
1188 | ||
e38e0312 JG |
1189 | complete_symtab (filestring, file_start_addr); |
1190 | cur_src_end_addr = file_end_addr; | |
3c02636b JK |
1191 | end_symtab (file_end_addr, 1, 0, objfile, |
1192 | textsec->target_index); | |
d07734e3 FF |
1193 | end_stabs (); |
1194 | start_stabs (); | |
860b4da3 JK |
1195 | /* Give all csects for this source file the same |
1196 | name. */ | |
1197 | start_symtab (filestring, (char *)NULL, (CORE_ADDR)0); | |
e38e0312 JG |
1198 | } |
1199 | ||
1200 | /* If this is the very first csect seen, basically `__start'. */ | |
1201 | if (just_started) { | |
1202 | first_object_file_end = cs->c_value + CSECT_LEN (main_aux); | |
1203 | just_started = 0; | |
1204 | } | |
1205 | ||
1206 | file_start_addr = cs->c_value; | |
1207 | file_end_addr = cs->c_value + CSECT_LEN (main_aux); | |
1208 | ||
1209 | if (cs->c_name && cs->c_name[0] == '.') { | |
818de002 PB |
1210 | last_csect_name = cs->c_name; |
1211 | last_csect_val = cs->c_value; | |
3c02636b | 1212 | last_csect_sec = cs->c_secnum; |
e38e0312 JG |
1213 | } |
1214 | } | |
818de002 | 1215 | misc_func_recorded = 0; |
e38e0312 JG |
1216 | continue; |
1217 | ||
1218 | case XMC_RW : | |
1219 | break; | |
1220 | ||
1221 | /* If the section is not a data description, ignore it. Note that | |
1222 | uninitialized data will show up as XTY_CM/XMC_RW pair. */ | |
1223 | ||
1224 | case XMC_TC0: | |
556f3d90 PB |
1225 | if (toc_offset) |
1226 | warning ("More than one xmc_tc0 symbol found."); | |
1227 | toc_offset = cs->c_value; | |
1228 | continue; | |
e38e0312 JG |
1229 | |
1230 | case XMC_TC : /* ignore toc entries */ | |
1231 | default : /* any other XMC_XXX */ | |
1232 | continue; | |
1233 | } | |
1234 | } | |
1235 | break; /* switch CSECT_SCLAS() */ | |
1236 | ||
1237 | case XTY_LD : | |
1238 | ||
1239 | /* a function entry point. */ | |
1240 | if (CSECT_SCLAS (main_aux) == XMC_PR) { | |
1241 | ||
1242 | function_entry_point: | |
818de002 | 1243 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_text, |
3c02636b | 1244 | symname_alloced, cs->c_secnum); |
e38e0312 JG |
1245 | |
1246 | fcn_line_offset = main_aux->x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
1247 | fcn_start_addr = cs->c_value; | |
1248 | ||
1249 | /* save the function header info, which will be used | |
1250 | when `.bf' is seen. */ | |
1251 | fcn_cs_saved = *cs; | |
1252 | fcn_aux_saved = *main_aux; | |
818de002 PB |
1253 | |
1254 | ||
1255 | ptb = NULL; | |
1256 | ||
1257 | /* If function has two auxent, then debugging information is | |
1258 | already available for it. Process traceback table for | |
1259 | functions with only one auxent. */ | |
1260 | ||
1261 | if (cs->c_nsyms == 1) | |
1262 | ptb = retrieve_tracebackinfo (abfd, textsec, cs); | |
1263 | ||
1264 | else if (cs->c_nsyms != 2) | |
1265 | abort (); | |
1266 | ||
1267 | /* If there is traceback info, create and add parameters for it. */ | |
1268 | ||
1269 | if (ptb && (ptb->fixedparms || ptb->floatparms)) { | |
1270 | ||
1271 | int parmcnt = ptb->fixedparms + ptb->floatparms; | |
1272 | char *parmcode = (char*) &ptb->parminfo; | |
1273 | int parmvalue = ptb->framesize + 0x18; /* sizeof(LINK AREA) == 0x18 */ | |
1274 | unsigned int ii, mask; | |
1275 | ||
1276 | for (ii=0, mask = 0x80000000; ii <parmcnt; ++ii) { | |
1277 | struct symbol *parm; | |
1278 | ||
1279 | if (ptb->parminfo & mask) { /* float or double */ | |
1280 | mask = mask >> 1; | |
1281 | if (ptb->parminfo & mask) { /* double parm */ | |
1282 | ADD_PARM_TO_PENDING | |
1283 | (parm, parmvalue, builtin_type_double, local_symbols); | |
1284 | parmvalue += sizeof (double); | |
1285 | } | |
1286 | else { /* float parm */ | |
1287 | ADD_PARM_TO_PENDING | |
1288 | (parm, parmvalue, builtin_type_float, local_symbols); | |
1289 | parmvalue += sizeof (float); | |
1290 | } | |
1291 | } | |
6c6afbb9 PB |
1292 | else { /* fixed parm, use (int*) for hex rep. */ |
1293 | ADD_PARM_TO_PENDING (parm, parmvalue, | |
1294 | lookup_pointer_type (builtin_type_int), | |
1295 | local_symbols); | |
818de002 PB |
1296 | parmvalue += sizeof (int); |
1297 | } | |
1298 | mask = mask >> 1; | |
1299 | } | |
1300 | ||
1301 | /* Fake this as a function. Needed in process_xcoff_symbol() */ | |
1302 | cs->c_type = 32; | |
1303 | ||
1304 | finish_block(process_xcoff_symbol (cs, objfile), &local_symbols, | |
1305 | pending_blocks, cs->c_value, | |
1306 | cs->c_value + ptb->fsize, objfile); | |
1307 | } | |
e38e0312 JG |
1308 | continue; |
1309 | } | |
818de002 | 1310 | /* shared library function trampoline code entry point. */ |
e38e0312 | 1311 | else if (CSECT_SCLAS (main_aux) == XMC_GL) { |
507e4004 PB |
1312 | |
1313 | /* record trampoline code entries as mst_unknown symbol. When we | |
1314 | lookup mst symbols, we will choose mst_text over mst_unknown. */ | |
1315 | ||
1eeba686 PB |
1316 | #if 1 |
1317 | /* After the implementation of incremental loading of shared | |
1318 | libraries, we don't want to access trampoline entries. This | |
1319 | approach has a consequence of the necessity to bring the whole | |
1320 | shared library at first, in order do anything with it (putting | |
1321 | breakpoints, using malloc, etc). On the other side, this is | |
1322 | consistient with gdb's behaviour on a SUN platform. */ | |
1323 | ||
1324 | /* Trying to prefer *real* function entry over its trampoline, | |
1325 | by assigning `mst_unknown' type to trampoline entries fails. | |
1326 | Gdb treats those entries as chars. FIXME. */ | |
1327 | ||
1328 | /* Recording this entry is necessary. Single stepping relies on | |
1329 | this vector to get an idea about function address boundaries. */ | |
1330 | ||
3c02636b JK |
1331 | prim_record_minimal_symbol_and_info |
1332 | ("<trampoline>", cs->c_value, mst_unknown, | |
1333 | (char *)NULL, cs->c_secnum); | |
1eeba686 PB |
1334 | #else |
1335 | ||
1336 | /* record trampoline code entries as mst_unknown symbol. When we | |
1337 | lookup mst symbols, we will choose mst_text over mst_unknown. */ | |
1338 | ||
507e4004 | 1339 | RECORD_MINIMAL_SYMBOL (cs->c_name, cs->c_value, mst_unknown, |
818de002 | 1340 | symname_alloced); |
1eeba686 | 1341 | #endif |
e38e0312 JG |
1342 | continue; |
1343 | } | |
1344 | break; | |
1345 | ||
1346 | default : /* all other XTY_XXXs */ | |
1347 | break; | |
818de002 | 1348 | } /* switch CSECT_SMTYP() */ } |
e38e0312 JG |
1349 | |
1350 | switch (cs->c_sclass) { | |
1351 | ||
1352 | case C_FILE: | |
1353 | ||
818de002 PB |
1354 | /* see if the last csect needs to be recorded. */ |
1355 | ||
1356 | if (last_csect_name && !misc_func_recorded) { | |
1357 | ||
1358 | /* if no misc. function recorded in the last seen csect, enter | |
1359 | it as a function. This will take care of functions like | |
1360 | strcmp() compiled by xlc. */ | |
1361 | ||
1362 | int alloced = 0; | |
1363 | RECORD_MINIMAL_SYMBOL (last_csect_name, last_csect_val, | |
3c02636b | 1364 | mst_text, alloced, last_csect_sec); |
818de002 PB |
1365 | } |
1366 | ||
e38e0312 JG |
1367 | /* c_value field contains symnum of next .file entry in table |
1368 | or symnum of first global after last .file. */ | |
1369 | ||
1370 | next_file_symnum = cs->c_value; | |
1371 | ||
1372 | /* complete symbol table for last object file containing | |
1373 | debugging information. */ | |
1374 | ||
d07734e3 FF |
1375 | /* Whether or not there was a csect in the previous file, we have to call |
1376 | `end_stabs' and `start_stabs' to reset type_vector, | |
e38e0312 | 1377 | line_vector, etc. structures. */ |
818de002 | 1378 | |
e38e0312 JG |
1379 | complete_symtab (filestring, file_start_addr); |
1380 | cur_src_end_addr = file_end_addr; | |
3c02636b | 1381 | end_symtab (file_end_addr, 1, 0, objfile, textsec->target_index); |
d07734e3 FF |
1382 | end_stabs (); |
1383 | start_stabs (); | |
e38e0312 | 1384 | start_symtab (cs->c_name, (char *)NULL, (CORE_ADDR)0); |
818de002 | 1385 | last_csect_name = 0; |
e38e0312 JG |
1386 | |
1387 | /* reset file start and end addresses. A compilation unit with no text | |
1388 | (only data) should have zero file boundaries. */ | |
1389 | file_start_addr = file_end_addr = 0; | |
1390 | ||
1391 | filestring = cs->c_name; | |
1392 | break; | |
1393 | ||
1394 | ||
818de002 | 1395 | case C_FUN: |
1eeba686 | 1396 | fcn_stab_saved = *cs; |
818de002 PB |
1397 | break; |
1398 | ||
1399 | ||
e38e0312 | 1400 | case C_FCN: |
2e4964ad | 1401 | if (STREQ (cs->c_name, ".bf")) { |
e38e0312 JG |
1402 | |
1403 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1404 | main_aux); | |
1405 | ||
1406 | within_function = 1; | |
1407 | ||
818de002 | 1408 | mark_first_line (fcn_line_offset, cs->c_symnum); |
e38e0312 JG |
1409 | |
1410 | new = push_context (0, fcn_start_addr); | |
1eeba686 | 1411 | |
1eeba686 PB |
1412 | new->name = define_symbol |
1413 | (fcn_cs_saved.c_value, fcn_stab_saved.c_name, 0, 0, objfile); | |
3c02636b JK |
1414 | if (new->name != NULL) |
1415 | SYMBOL_SECTION (new->name) = cs->c_secnum; | |
e38e0312 | 1416 | } |
2e4964ad | 1417 | else if (STREQ (cs->c_name, ".ef")) { |
e38e0312 JG |
1418 | |
1419 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1420 | main_aux); | |
1421 | ||
1422 | /* the value of .ef is the address of epilogue code; | |
1423 | not useful for gdb */ | |
1424 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1425 | contains number of lines to '}' */ | |
1426 | ||
1427 | fcn_last_line = main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
e38e0312 JG |
1428 | new = pop_context (); |
1429 | if (context_stack_depth != 0) | |
1430 | error ("invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.", | |
1431 | symnum); | |
1432 | ||
1433 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1434 | new->start_addr, | |
1435 | fcn_cs_saved.c_value + | |
1ab3bf1b | 1436 | fcn_aux_saved.x_sym.x_misc.x_fsize, objfile); |
e38e0312 JG |
1437 | within_function = 0; |
1438 | } | |
1439 | break; | |
1440 | ||
1441 | case C_BSTAT : /* begin static block */ | |
3c02636b JK |
1442 | { |
1443 | struct internal_syment symbol; | |
1444 | ||
1445 | read_symbol (&symbol, cs->c_value); | |
1446 | static_block_base = symbol.n_value; | |
1447 | static_block_section = symbol.n_scnum; | |
1448 | } | |
e38e0312 JG |
1449 | break; |
1450 | ||
1451 | case C_ESTAT : /* end of static block */ | |
1452 | static_block_base = 0; | |
3c02636b | 1453 | static_block_section = -1; |
e38e0312 JG |
1454 | break; |
1455 | ||
1456 | case C_ARG : /* These are not implemented. */ | |
1457 | case C_REGPARM : | |
1458 | case C_TPDEF : | |
1459 | case C_STRTAG : | |
1460 | case C_UNTAG : | |
1461 | case C_ENTAG : | |
1462 | printf ("ERROR: Unimplemented storage class: %d.\n", cs->c_sclass); | |
1463 | break; | |
1464 | ||
1465 | case C_HIDEXT : /* ignore these.. */ | |
1466 | case C_LABEL : | |
1467 | case C_NULL : | |
1468 | break; | |
1469 | ||
1470 | case C_BINCL : /* beginning of include file */ | |
818de002 PB |
1471 | |
1472 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1473 | order. Thus, when wee see them, we might not know enough info | |
1474 | to process them. Thus, we'll be saving them into a table | |
1475 | (inclTable) and postpone their processing. */ | |
1476 | ||
1477 | record_include_begin (cs); | |
e38e0312 JG |
1478 | break; |
1479 | ||
1480 | case C_EINCL : /* end of include file */ | |
818de002 PB |
1481 | /* see the comment after case C_BINCL. */ |
1482 | record_include_end (cs); | |
e38e0312 JG |
1483 | break; |
1484 | ||
1485 | case C_BLOCK : | |
2e4964ad | 1486 | if (STREQ (cs->c_name, ".bb")) { |
e38e0312 JG |
1487 | depth++; |
1488 | new = push_context (depth, cs->c_value); | |
1489 | } | |
2e4964ad | 1490 | else if (STREQ (cs->c_name, ".eb")) { |
e38e0312 JG |
1491 | new = pop_context (); |
1492 | if (depth != new->depth) | |
1493 | error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.", | |
1494 | symnum); | |
1495 | ||
1496 | depth--; | |
1497 | if (local_symbols && context_stack_depth > 0) { | |
1498 | /* Make a block for the local symbols within. */ | |
1499 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1ab3bf1b | 1500 | new->start_addr, cs->c_value, objfile); |
e38e0312 JG |
1501 | } |
1502 | local_symbols = new->locals; | |
1503 | } | |
1504 | break; | |
1505 | ||
1506 | default : | |
4ed3a9ea | 1507 | process_xcoff_symbol (cs, objfile); |
e38e0312 JG |
1508 | break; |
1509 | } | |
1510 | ||
1511 | } /* while */ | |
1512 | ||
1513 | if (last_source_file) | |
d07734e3 | 1514 | { |
3c02636b | 1515 | end_symtab (cur_src_end_addr, 1, 0, objfile, textsec->target_index); |
d07734e3 FF |
1516 | end_stabs (); |
1517 | } | |
e38e0312 JG |
1518 | |
1519 | free (symtbl); | |
1ab3bf1b | 1520 | current_objfile = NULL; |
556f3d90 PB |
1521 | |
1522 | /* Record the toc offset value of this symbol table into ldinfo structure. | |
1523 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
1524 | this information would be file auxiliary header. */ | |
1525 | ||
e5eeaaf8 | 1526 | #ifndef FAKING_RS6000 |
556f3d90 | 1527 | xcoff_add_toc_to_loadinfo (toc_offset); |
e5eeaaf8 | 1528 | #endif |
e38e0312 JG |
1529 | } |
1530 | ||
1531 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1532 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1533 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1534 | *(SYMBOL2) = *(SYMBOL1); |
1535 | ||
1536 | ||
1537 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
1ab3bf1b | 1538 | (ALLOCED) ? (NAME) : obstack_copy0 (&objfile->symbol_obstack, (NAME), strlen (NAME)); |
e38e0312 JG |
1539 | |
1540 | ||
e38e0312 JG |
1541 | /* process one xcoff symbol. */ |
1542 | ||
1543 | static struct symbol * | |
1ab3bf1b | 1544 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1545 | register struct coff_symbol *cs; |
1ab3bf1b | 1546 | struct objfile *objfile; |
e38e0312 JG |
1547 | { |
1548 | struct symbol onesymbol; | |
1549 | register struct symbol *sym = &onesymbol; | |
1550 | struct symbol *sym2 = NULL; | |
1551 | struct type *ttype; | |
1552 | char *name, *pp, *qq; | |
818de002 | 1553 | int struct_and_type_combined; |
6c6afbb9 | 1554 | int nameless; |
e38e0312 JG |
1555 | |
1556 | name = cs->c_name; | |
1557 | if (name[0] == '.') | |
1558 | ++name; | |
1559 | ||
4ed97c9a | 1560 | memset (sym, '\0', sizeof (struct symbol)); |
e38e0312 JG |
1561 | |
1562 | /* default assumptions */ | |
1563 | SYMBOL_VALUE (sym) = cs->c_value; | |
1564 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
3c02636b | 1565 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 JG |
1566 | |
1567 | if (ISFCN (cs->c_type)) { | |
1568 | ||
1569 | /* At this point, we don't know the type of the function and assume it | |
1570 | is int. This will be patched with the type from its stab entry later | |
1571 | on in patch_block_stabs () */ | |
1572 | ||
1573 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
818de002 | 1574 | SYMBOL_TYPE (sym) = lookup_function_type (lookup_fundamental_type (objfile, FT_INTEGER)); |
e38e0312 JG |
1575 | |
1576 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1577 | SYMBOL_DUP (sym, sym2); | |
1578 | ||
1579 | if (cs->c_sclass == C_EXT) | |
1580 | add_symbol_to_list (sym2, &global_symbols); | |
1581 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1582 | add_symbol_to_list (sym2, &file_symbols); | |
1583 | } | |
1584 | ||
1585 | else { | |
1586 | ||
1587 | /* in case we can't figure out the type, default is `int'. */ | |
818de002 | 1588 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, FT_INTEGER); |
e38e0312 JG |
1589 | |
1590 | switch (cs->c_sclass) | |
1591 | { | |
818de002 | 1592 | #if 0 |
e38e0312 JG |
1593 | case C_FUN: |
1594 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1595 | add_stab_to_list (name, &global_stabs); | |
1596 | else | |
1597 | add_stab_to_list (name, &file_stabs); | |
1598 | break; | |
818de002 | 1599 | #endif |
e38e0312 JG |
1600 | |
1601 | case C_DECL: /* a type decleration?? */ | |
1eeba686 | 1602 | |
3c02636b JK |
1603 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); |
1604 | if (sym != NULL) | |
1605 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1606 | return sym; | |
1eeba686 | 1607 | |
e38e0312 JG |
1608 | case C_GSYM: |
1609 | add_stab_to_list (name, &global_stabs); | |
1610 | break; | |
1611 | ||
1612 | case C_PSYM: | |
818de002 | 1613 | case C_RPSYM: |
1eeba686 | 1614 | |
3c02636b JK |
1615 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); |
1616 | if (sym != NULL) | |
1617 | { | |
3c02636b JK |
1618 | SYMBOL_SECTION (sym) = cs->c_secnum; |
1619 | } | |
1620 | return sym; | |
e38e0312 JG |
1621 | |
1622 | case C_STSYM: | |
1eeba686 | 1623 | |
1eeba686 PB |
1624 | /* If we are going to use Sun dbx's define_symbol(), we need to |
1625 | massage our stab string a little. Change 'V' type to 'S' to be | |
1626 | comparible with Sun. */ | |
058eb766 JK |
1627 | /* FIXME: I believe this is to avoid a Sun-specific hack somewhere. |
1628 | Needs more investigation. */ | |
1eeba686 PB |
1629 | |
1630 | if (*name == ':' || (pp = (char *) index (name, ':')) == NULL) | |
1631 | return NULL; | |
1632 | ||
1633 | ++pp; | |
1634 | if (*pp == 'V') *pp = 'S'; | |
1635 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
3c02636b JK |
1636 | if (sym != NULL) |
1637 | { | |
1638 | SYMBOL_VALUE (sym) += static_block_base; | |
1639 | SYMBOL_SECTION (sym) = static_block_section; | |
1640 | } | |
1eeba686 | 1641 | return sym; |
e38e0312 JG |
1642 | |
1643 | case C_LSYM: | |
73262420 JK |
1644 | sym = define_symbol (cs->c_value, cs->c_name, 0, N_LSYM, objfile); |
1645 | if (sym != NULL) | |
1646 | { | |
1647 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1648 | } | |
1649 | return sym; | |
e38e0312 JG |
1650 | |
1651 | case C_AUTO: | |
1652 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1653 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
3c02636b | 1654 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 JG |
1655 | SYMBOL_DUP (sym, sym2); |
1656 | add_symbol_to_list (sym2, &local_symbols); | |
1657 | break; | |
1658 | ||
1659 | case C_EXT: | |
1660 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1661 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
3c02636b | 1662 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 JG |
1663 | SYMBOL_DUP (sym, sym2); |
1664 | add_symbol_to_list (sym2, &global_symbols); | |
1665 | break; | |
1666 | ||
1667 | case C_STAT: | |
1668 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1669 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
3c02636b | 1670 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 JG |
1671 | SYMBOL_DUP (sym, sym2); |
1672 | add_symbol_to_list | |
1673 | (sym2, within_function ? &local_symbols : &file_symbols); | |
1674 | break; | |
1675 | ||
1676 | case C_REG: | |
1677 | printf ("ERROR! C_REG is not fully implemented!\n"); | |
1678 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1679 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
3c02636b | 1680 | SYMBOL_SECTION (sym) = cs->c_secnum; |
e38e0312 JG |
1681 | SYMBOL_DUP (sym, sym2); |
1682 | add_symbol_to_list (sym2, &local_symbols); | |
1683 | break; | |
1684 | ||
1685 | case C_RSYM: | |
1ab3bf1b | 1686 | pp = (char*) strchr (name, ':'); |
1eeba686 PB |
1687 | if (pp) { |
1688 | sym = define_symbol (cs->c_value, cs->c_name, 0, 0, objfile); | |
3c02636b JK |
1689 | if (sym != NULL) |
1690 | SYMBOL_SECTION (sym) = cs->c_secnum; | |
1eeba686 PB |
1691 | return sym; |
1692 | } | |
1693 | else { | |
e9916390 | 1694 | complain (&rsym_complaint, name); |
1eeba686 PB |
1695 | return NULL; |
1696 | } | |
e38e0312 JG |
1697 | |
1698 | default : | |
e9916390 | 1699 | complain (&storclass_complaint, cs->c_sclass); |
e38e0312 JG |
1700 | return NULL; |
1701 | } | |
1702 | } | |
1703 | return sym2; | |
1704 | } | |
1705 | ||
3c02636b JK |
1706 | /* Set *SYMBOL to symbol number symno in symtbl. */ |
1707 | static void | |
1708 | read_symbol (symbol, symno) | |
1709 | struct internal_syment *symbol; | |
e38e0312 JG |
1710 | int symno; |
1711 | { | |
c84a96d7 JK |
1712 | if (symno < 0 || symno >= symtbl_num_syms) |
1713 | { | |
b646b438 | 1714 | static struct complaint msg = |
c84a96d7 JK |
1715 | {"Invalid symbol offset", 0, 0}; |
1716 | complain (&msg); | |
3c02636b JK |
1717 | symbol->n_value = 0; |
1718 | symbol->n_scnum = -1; | |
1719 | return; | |
c84a96d7 JK |
1720 | } |
1721 | bfd_coff_swap_sym_in (symfile_bfd, symtbl + (symno*local_symesz), symbol); | |
3c02636b JK |
1722 | } |
1723 | ||
1724 | /* Get value corresponding to symbol number symno in symtbl. */ | |
1725 | ||
1726 | static int | |
1727 | read_symbol_nvalue (symno) | |
1728 | int symno; | |
1729 | { | |
1730 | struct internal_syment symbol[1]; | |
1731 | ||
1732 | read_symbol (symbol, symno); | |
e38e0312 JG |
1733 | return symbol->n_value; |
1734 | } | |
1735 | ||
1736 | ||
c84a96d7 JK |
1737 | /* Find the address of the function corresponding to symno, where |
1738 | symno is the symbol pointed to by the linetable. */ | |
1739 | ||
e38e0312 | 1740 | static int |
c84a96d7 | 1741 | read_symbol_lineno (symno) |
e38e0312 JG |
1742 | int symno; |
1743 | { | |
1744 | struct internal_syment symbol[1]; | |
1745 | union internal_auxent main_aux[1]; | |
1746 | ||
c84a96d7 JK |
1747 | /* Note that just searching for a short distance (e.g. 50 symbols) |
1748 | is not enough, at least in the following case. | |
1749 | ||
1750 | .extern foo | |
1751 | [many .stabx entries] | |
1752 | [a few functions, referring to foo] | |
1753 | .globl foo | |
1754 | .bf | |
e38e0312 | 1755 | |
c84a96d7 JK |
1756 | What happens here is that the assembler moves the .stabx entries |
1757 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1758 | all the stabx entries. See PR gdb/2222. */ | |
1759 | while (symno < symtbl_num_syms) { | |
e38e0312 | 1760 | bfd_coff_swap_sym_in (symfile_bfd, |
c84a96d7 | 1761 | symtbl + (symno*local_symesz), symbol); |
2e4964ad | 1762 | if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf")) |
e38e0312 | 1763 | goto gotit; |
6b5b330b | 1764 | symno += symbol->n_numaux+1; |
e38e0312 JG |
1765 | } |
1766 | ||
e9916390 | 1767 | complain (&bf_notfound_complaint); |
e38e0312 JG |
1768 | return 0; |
1769 | ||
1770 | gotit: | |
1771 | /* take aux entry and return its lineno */ | |
1772 | symno++; | |
c84a96d7 | 1773 | bfd_coff_swap_aux_in (symfile_bfd, symtbl+(symno*local_symesz), |
e38e0312 JG |
1774 | symbol->n_type, symbol->n_sclass, main_aux); |
1775 | ||
1776 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1777 | } | |
1778 | ||
1779 | /* Support for line number handling */ | |
1780 | ||
1781 | /* This function is called for every section; it finds the outer limits | |
1782 | * of the line table (minimum and maximum file offset) so that the | |
1783 | * mainline code can read the whole thing for efficiency. | |
1784 | */ | |
1785 | static void | |
1786 | find_linenos(abfd, asect, vpinfo) | |
1787 | bfd *abfd; | |
1788 | sec_ptr asect; | |
1ab3bf1b | 1789 | PTR vpinfo; |
e38e0312 JG |
1790 | { |
1791 | struct coff_symfile_info *info; | |
1792 | int size, count; | |
1793 | file_ptr offset, maxoff; | |
1794 | ||
1795 | count = asect->lineno_count; | |
1796 | ||
2e4964ad | 1797 | if (!STREQ (asect->name, ".text") || count == 0) |
e38e0312 JG |
1798 | return; |
1799 | ||
1800 | size = count * coff_data (symfile_bfd)->local_linesz; | |
1801 | info = (struct coff_symfile_info *)vpinfo; | |
1802 | offset = asect->line_filepos; | |
1803 | maxoff = offset + size; | |
1804 | ||
1805 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1806 | info->min_lineno_offset = offset; | |
1807 | ||
1808 | if (maxoff > info->max_lineno_offset) | |
1809 | info->max_lineno_offset = maxoff; | |
1810 | } | |
1811 | ||
1812 | ||
1813 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1814 | external (unswapped) format in memory; we'll swap them as we enter | |
1815 | them into GDB's data structures. */ | |
1816 | ||
1817 | static int | |
1818 | init_lineno (abfd, offset, size) | |
1819 | bfd *abfd; | |
d5931d79 | 1820 | file_ptr offset; |
e38e0312 JG |
1821 | int size; |
1822 | { | |
1823 | int val; | |
1824 | ||
0eb22669 PS |
1825 | free_linetab (); |
1826 | ||
d5931d79 | 1827 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
1828 | return -1; |
1829 | ||
1830 | linetab = (char *) xmalloc(size); | |
1831 | ||
1832 | val = bfd_read(linetab, 1, size, abfd); | |
1833 | if (val != size) | |
1834 | return -1; | |
1835 | ||
1836 | linetab_offset = offset; | |
1837 | linetab_size = size; | |
e38e0312 JG |
1838 | return 0; |
1839 | } | |
0eb22669 PS |
1840 | |
1841 | static void | |
1842 | free_linetab () | |
1843 | { | |
1844 | if (linetab) | |
1845 | free (linetab); | |
1846 | linetab = NULL; | |
1847 | } | |
93fe4e33 | 1848 | \f |
e38e0312 JG |
1849 | /* dbx allows the text of a symbol name to be continued into the |
1850 | next symbol name! When such a continuation is encountered | |
1851 | (a \ at the end of the text of a name) | |
1852 | call this function to get the continuation. */ | |
1853 | /* So far, I haven't seen this happenning xlc output. I doubt we'll need this | |
9b280a7f | 1854 | for xcoff. */ |
e38e0312 | 1855 | |
1d4c28c5 | 1856 | #undef next_symbol_text |
e38e0312 JG |
1857 | #define next_symbol_text() \ |
1858 | printf ("Gdb Error: symbol names on multiple lines not implemented.\n") | |
1859 | ||
1860 | ||
1ab3bf1b | 1861 | static void |
9b280a7f | 1862 | xcoff_new_init (objfile) |
80d68b1d | 1863 | struct objfile *objfile; |
e38e0312 | 1864 | { |
e38e0312 JG |
1865 | } |
1866 | ||
dd469789 JG |
1867 | |
1868 | /* xcoff_symfile_init() | |
1869 | is the xcoff-specific initialization routine for reading symbols. | |
1870 | It is passed an objfile which contains, among other things, | |
1871 | the BFD for the file whose symbols are being read, and a slot for | |
1872 | a pointer to "private data" which we fill with cookies and other | |
1873 | treats for xcoff_symfile_read(). | |
1874 | ||
1875 | We will only be called if this is an XCOFF or XCOFF-like file. | |
1876 | BFD handles figuring out the format of the file, and code in symfile.c | |
1877 | uses BFD's determination to vector to us. | |
1878 | ||
1879 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ | |
1880 | ||
1ab3bf1b | 1881 | static void |
9b280a7f | 1882 | xcoff_symfile_init (objfile) |
80d68b1d | 1883 | struct objfile *objfile; |
e38e0312 | 1884 | { |
80d68b1d | 1885 | bfd *abfd = objfile->obfd; |
e38e0312 JG |
1886 | |
1887 | /* Allocate struct to keep track of the symfile */ | |
80d68b1d FF |
1888 | objfile -> sym_private = xmmalloc (objfile -> md, |
1889 | sizeof (struct coff_symfile_info)); | |
5e2e79f8 | 1890 | init_entry_point_info (objfile); |
e38e0312 JG |
1891 | } |
1892 | ||
80d68b1d FF |
1893 | /* Perform any local cleanups required when we are done with a particular |
1894 | objfile. I.E, we are in the process of discarding all symbol information | |
1895 | for an objfile, freeing up all memory held for it, and unlinking the | |
1896 | objfile struct from the global list of known objfiles. */ | |
1897 | ||
1898 | static void | |
9b280a7f | 1899 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
1900 | struct objfile *objfile; |
1901 | { | |
1902 | if (objfile -> sym_private != NULL) | |
1903 | { | |
1904 | mfree (objfile -> md, objfile -> sym_private); | |
1905 | } | |
1906 | ||
1907 | /* Start with a fresh include table for the next objfile. */ | |
1908 | ||
1909 | if (inclTable) | |
1910 | { | |
1911 | free (inclTable); | |
1912 | inclTable = NULL; | |
1913 | } | |
1914 | inclIndx = inclLength = inclDepth = 0; | |
1915 | } | |
1916 | ||
e38e0312 JG |
1917 | |
1918 | static int | |
1ab3bf1b | 1919 | init_stringtab(abfd, offset, objfile) |
e38e0312 | 1920 | bfd *abfd; |
d5931d79 | 1921 | file_ptr offset; |
1ab3bf1b | 1922 | struct objfile *objfile; |
e38e0312 JG |
1923 | { |
1924 | long length; | |
1925 | int val; | |
1926 | unsigned char lengthbuf[4]; | |
1927 | ||
d5931d79 | 1928 | if (bfd_seek(abfd, offset, L_SET) < 0) |
e38e0312 JG |
1929 | return -1; |
1930 | ||
1931 | val = bfd_read((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
1932 | length = bfd_h_get_32(abfd, lengthbuf); | |
1933 | ||
1934 | /* If no string table is needed, then the file may end immediately | |
1935 | after the symbols. Just return with `strtbl' set to null. */ | |
1936 | ||
1937 | if (val != sizeof length || length < sizeof length) | |
1938 | return 0; | |
1939 | ||
1940 | /* Allocate string table from symbol_obstack. We will need this table | |
1941 | as long as we have its symbol table around. */ | |
1942 | ||
1ab3bf1b | 1943 | strtbl = (char*) obstack_alloc (&objfile->symbol_obstack, length); |
e38e0312 JG |
1944 | if (strtbl == NULL) |
1945 | return -1; | |
1946 | ||
ade40d31 | 1947 | memcpy(strtbl, &length, sizeof length); |
e38e0312 JG |
1948 | if (length == sizeof length) |
1949 | return 0; | |
1950 | ||
1951 | val = bfd_read(strtbl + sizeof length, 1, length - sizeof length, abfd); | |
1952 | ||
1953 | if (val != length - sizeof length || strtbl[length - 1] != '\0') | |
1954 | return -1; | |
1955 | ||
1956 | return 0; | |
1957 | } | |
1958 | ||
1959 | static int | |
1960 | init_debugsection(abfd) | |
1961 | bfd *abfd; | |
1962 | { | |
1963 | register sec_ptr secp; | |
1964 | bfd_size_type length; | |
1965 | ||
1966 | if (debugsec) { | |
1967 | free(debugsec); | |
1968 | debugsec = NULL; | |
1969 | } | |
1970 | ||
1971 | secp = bfd_get_section_by_name(abfd, ".debug"); | |
1972 | if (!secp) | |
1973 | return 0; | |
1974 | ||
1975 | if (!(length = bfd_section_size(abfd, secp))) | |
1976 | return 0; | |
1977 | ||
1ab3bf1b | 1978 | debugsec = (char *) xmalloc ((unsigned)length); |
e38e0312 JG |
1979 | if (debugsec == NULL) |
1980 | return -1; | |
1981 | ||
1982 | if (!bfd_get_section_contents(abfd, secp, debugsec, (file_ptr) 0, length)) { | |
1983 | printf ("Can't read .debug section from symbol file\n"); | |
1984 | return -1; | |
1985 | } | |
1986 | return 0; | |
1987 | } | |
1988 | ||
1989 | static void | |
1990 | free_debugsection() | |
1991 | { | |
1992 | if (debugsec) | |
1993 | free(debugsec); | |
1994 | debugsec = NULL; | |
1995 | } | |
1996 | ||
1997 | ||
9b280a7f | 1998 | /* xcoff version of symbol file read. */ |
e38e0312 | 1999 | |
1ab3bf1b | 2000 | static void |
9b280a7f | 2001 | xcoff_symfile_read (objfile, section_offset, mainline) |
80d68b1d | 2002 | struct objfile *objfile; |
2670f34d | 2003 | struct section_offset *section_offset; |
e38e0312 JG |
2004 | int mainline; |
2005 | { | |
d5931d79 JG |
2006 | int num_symbols; /* # of symbols */ |
2007 | file_ptr symtab_offset; /* symbol table and */ | |
2008 | file_ptr stringtab_offset; /* string table file offsets */ | |
e38e0312 JG |
2009 | int val; |
2010 | bfd *abfd; | |
80d68b1d | 2011 | struct coff_symfile_info *info; |
e38e0312 | 2012 | char *name; |
0eb22669 | 2013 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
e38e0312 | 2014 | |
80d68b1d FF |
2015 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2016 | symfile_bfd = abfd = objfile->obfd; | |
2017 | name = objfile->name; | |
e38e0312 JG |
2018 | |
2019 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2020 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2021 | stringtab_offset = symtab_offset + | |
2022 | num_symbols * coff_data(abfd)->local_symesz; | |
2023 | ||
2024 | info->min_lineno_offset = 0; | |
2025 | info->max_lineno_offset = 0; | |
2026 | bfd_map_over_sections (abfd, find_linenos, info); | |
2027 | ||
2028 | /* FIXME! This stuff should move into symfile_init */ | |
2029 | if (info->min_lineno_offset != 0 | |
2030 | && info->max_lineno_offset > info->min_lineno_offset) { | |
2031 | ||
2032 | /* only read in the line # table if one exists */ | |
0eb22669 | 2033 | make_cleanup (free_linetab, 0); |
e38e0312 | 2034 | val = init_lineno(abfd, info->min_lineno_offset, |
d5931d79 | 2035 | (int) (info->max_lineno_offset - info->min_lineno_offset)); |
e38e0312 JG |
2036 | |
2037 | if (val < 0) | |
2038 | error("\"%s\": error reading line numbers\n", name); | |
2039 | } | |
2040 | ||
9d61147e JK |
2041 | if (num_symbols > 0) |
2042 | { | |
2043 | val = init_stringtab(abfd, stringtab_offset, objfile); | |
2044 | if (val < 0) { | |
2045 | error ("\"%s\": can't get string table", name); | |
2046 | } | |
e38e0312 | 2047 | |
9d61147e JK |
2048 | if (init_debugsection(abfd) < 0) { |
2049 | error ("Error reading .debug section of `%s'\n", name); | |
2050 | } | |
2051 | } | |
e38e0312 JG |
2052 | |
2053 | /* Position to read the symbol table. Do not read it all at once. */ | |
d5931d79 | 2054 | val = bfd_seek(abfd, symtab_offset, L_SET); |
e38e0312 JG |
2055 | if (val < 0) |
2056 | perror_with_name(name); | |
2057 | ||
2058 | if (bfd_tell(abfd) != symtab_offset) | |
2059 | fatal("bfd? BFD!"); | |
2060 | ||
1ab3bf1b JG |
2061 | init_minimal_symbol_collection (); |
2062 | make_cleanup (discard_minimal_symbols, 0); | |
e38e0312 | 2063 | |
e5eeaaf8 | 2064 | #ifndef FAKING_RS6000 |
556f3d90 | 2065 | /* Initialize load info structure. */ |
e38e0312 | 2066 | if (mainline) |
556f3d90 | 2067 | xcoff_init_loadinfo (); |
e5eeaaf8 | 2068 | #endif |
e38e0312 JG |
2069 | |
2070 | /* Now that the executable file is positioned at symbol table, | |
2071 | process it and define symbols accordingly. */ | |
2072 | ||
80d68b1d | 2073 | read_xcoff_symtab(objfile, num_symbols); |
e38e0312 | 2074 | |
1eeba686 PB |
2075 | /* Free debug section. */ |
2076 | free_debugsection (); | |
e38e0312 JG |
2077 | |
2078 | /* Sort symbols alphabetically within each block. */ | |
e5c00760 | 2079 | sort_all_symtab_syms (); |
e38e0312 | 2080 | |
1ab3bf1b JG |
2081 | /* Install any minimal symbols that have been collected as the current |
2082 | minimal symbols for this objfile. */ | |
2083 | ||
80d68b1d | 2084 | install_minimal_symbols (objfile); |
0eb22669 PS |
2085 | |
2086 | do_cleanups (back_to); | |
e38e0312 JG |
2087 | } |
2088 | ||
3c02636b JK |
2089 | /* XCOFF-specific parsing routine for section offsets. */ |
2090 | ||
2091 | static int largest_section; | |
2092 | ||
2093 | static void | |
2094 | note_one_section (abfd, asect, ptr) | |
2095 | bfd *abfd; | |
2096 | asection *asect; | |
2097 | PTR ptr; | |
2098 | { | |
2099 | if (asect->target_index > largest_section) | |
2100 | largest_section = asect->target_index; | |
2101 | } | |
2670f34d JG |
2102 | |
2103 | static | |
2104 | struct section_offsets * | |
9b280a7f | 2105 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2106 | struct objfile *objfile; |
2107 | CORE_ADDR addr; | |
2108 | { | |
2109 | struct section_offsets *section_offsets; | |
2110 | int i; | |
3c02636b JK |
2111 | |
2112 | largest_section = 0; | |
2113 | bfd_map_over_sections (objfile->obfd, note_one_section, NULL); | |
2114 | objfile->num_sections = largest_section + 1; | |
2670f34d | 2115 | section_offsets = (struct section_offsets *) |
3c02636b JK |
2116 | obstack_alloc |
2117 | (&objfile -> psymbol_obstack, | |
2118 | sizeof (struct section_offsets) | |
2119 | + sizeof (section_offsets->offsets) * (objfile->num_sections)); | |
2670f34d | 2120 | |
1d7e34e1 JK |
2121 | /* syms_from_objfile kindly subtracts from addr the bfd_section_vma |
2122 | of the .text section. This strikes me as wrong--whether the | |
2123 | offset to be applied to symbol reading is relative to the start | |
2124 | address of the section depends on the symbol format. In any | |
2125 | event, this whole "addr" concept is pretty broken (it doesn't | |
2126 | handle any section but .text sensibly), so just ignore the addr | |
2127 | parameter and use 0. That matches the fact that xcoff_symfile_read | |
2128 | ignores the section_offsets). */ | |
3c02636b | 2129 | for (i = 0; i < objfile->num_sections; i++) |
1d7e34e1 | 2130 | ANOFFSET (section_offsets, i) = 0; |
2670f34d JG |
2131 | |
2132 | return section_offsets; | |
2133 | } | |
9b280a7f | 2134 | /* Register our ability to parse symbols for xcoff BFD files. */ |
e38e0312 | 2135 | |
9b280a7f | 2136 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2137 | { |
80d68b1d FF |
2138 | "aixcoff-rs6000", /* sym_name: name or name prefix of BFD target type */ |
2139 | 15, /* sym_namelen: number of significant sym_name chars */ | |
9b280a7f JG |
2140 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2141 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2142 | xcoff_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2143 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2144 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2145 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2146 | }; |
2147 | ||
2148 | void | |
2149 | _initialize_xcoffread () | |
2150 | { | |
9b280a7f | 2151 | add_symtab_fns(&xcoff_sym_fns); |
e5eeaaf8 JG |
2152 | |
2153 | /* Initialize symbol template later used for arguments. */ | |
2154 | SYMBOL_NAME (&parmsym) = ""; | |
2155 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&parmsym, language_c); | |
2156 | SYMBOL_NAMESPACE (&parmsym) = VAR_NAMESPACE; | |
2157 | SYMBOL_CLASS (&parmsym) = LOC_ARG; | |
2158 | /* Its other fields are zero, or are filled in later. */ | |
e38e0312 | 2159 | } |