Commit | Line | Data |
---|---|---|
9b280a7f | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
211b564e | 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 1997 |
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 | |
6c9638b4 | 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
e38e0312 | 22 | |
dd469789 JG |
23 | #include "defs.h" |
24 | #include "bfd.h" | |
25 | ||
e38e0312 JG |
26 | #include <sys/types.h> |
27 | #include <fcntl.h> | |
28 | #include <ctype.h> | |
2b576293 | 29 | #include "gdb_string.h" |
e38e0312 | 30 | |
e38e0312 | 31 | #include <sys/param.h> |
5e4d4b0f | 32 | #ifndef NO_SYS_FILE |
e38e0312 | 33 | #include <sys/file.h> |
5e4d4b0f | 34 | #endif |
2b576293 | 35 | #include "gdb_stat.h" |
e38e0312 | 36 | |
a367db89 | 37 | #include "coff/internal.h" |
27ad511f | 38 | #include "libcoff.h" /* FIXME, internal data from BFD */ |
a367db89 | 39 | #include "coff/rs6000.h" |
27ad511f | 40 | |
e38e0312 | 41 | #include "symtab.h" |
1ab3bf1b | 42 | #include "gdbtypes.h" |
e38e0312 | 43 | #include "symfile.h" |
5e2e79f8 | 44 | #include "objfiles.h" |
e38e0312 | 45 | #include "buildsym.h" |
d07734e3 | 46 | #include "stabsread.h" |
df1e1074 PS |
47 | #include "expression.h" |
48 | #include "language.h" /* Needed inside partial-stab.h */ | |
dd469789 | 49 | #include "complaints.h" |
e38e0312 | 50 | |
a81ce07d JK |
51 | #include "gdb-stabs.h" |
52 | ||
73262420 | 53 | /* For interface with stabsread.c. */ |
c41e08c4 | 54 | #include "aout/stab_gnu.h" |
1eeba686 | 55 | |
a367db89 JK |
56 | /* For interface with partial-stab.h. */ |
57 | #define N_UNDF 0 /* Undefined symbol */ | |
58 | #undef N_ABS | |
59 | #define N_ABS 2 | |
60 | #define N_TEXT 4 /* Text sym -- defined at offset in text seg */ | |
61 | #define N_DATA 6 /* Data sym -- defined at offset in data seg */ | |
62 | #define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */ | |
63 | #define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */ | |
64 | #define N_FN 0x1f /* File name of .o file */ | |
65 | #define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */ | |
66 | /* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT, | |
67 | N_DATA, or N_BSS. When the low-order bit of other types is set, | |
68 | (e.g. N_WARNING versus N_FN), they are two different types. */ | |
69 | #define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */ | |
70 | #define N_INDR 0x0a | |
71 | ||
72 | /* The following symbols refer to set elements. | |
73 | All the N_SET[ATDB] symbols with the same name form one set. | |
74 | Space is allocated for the set in the text section, and each set | |
75 | elements value is stored into one word of the space. | |
76 | The first word of the space is the length of the set (number of elements). | |
77 | ||
78 | The address of the set is made into an N_SETV symbol | |
79 | whose name is the same as the name of the set. | |
80 | This symbol acts like a N_DATA global symbol | |
81 | in that it can satisfy undefined external references. */ | |
82 | ||
83 | /* These appear as input to LD, in a .o file. */ | |
84 | #define N_SETA 0x14 /* Absolute set element symbol */ | |
85 | #define N_SETT 0x16 /* Text set element symbol */ | |
86 | #define N_SETD 0x18 /* Data set element symbol */ | |
87 | #define N_SETB 0x1A /* Bss set element symbol */ | |
88 | ||
89 | /* This is output from LD. */ | |
90 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ | |
062cb0d3 FF |
91 | |
92 | /* Hook for recording the toc offset value of a symbol table into | |
93 | the ldinfo structure. */ | |
94 | ||
95 | void (*xcoff_add_toc_to_loadinfo_hook) PARAMS ((unsigned long)) = NULL; | |
96 | ||
97 | /* Hook for recording how to call xcoff_init_loadinfo for a native | |
98 | rs6000 config only. */ | |
99 | ||
100 | void (*xcoff_init_loadinfo_hook) PARAMS ((void)) = NULL; | |
101 | ||
a367db89 | 102 | \f |
bbb053fd JK |
103 | /* We put a pointer to this structure in the read_symtab_private field |
104 | of the psymtab. */ | |
a367db89 JK |
105 | |
106 | struct symloc { | |
107 | ||
108 | /* First symbol number for this file. */ | |
109 | ||
110 | int first_symnum; | |
111 | ||
112 | /* Number of symbols in the section of the symbol table devoted to | |
113 | this file's symbols (actually, the section bracketed may contain | |
114 | more than just this file's symbols). If numsyms is 0, the only | |
115 | reason for this thing's existence is the dependency list. Nothing | |
116 | else will happen when it is read in. */ | |
117 | ||
118 | int numsyms; | |
119 | ||
120 | /* Position of the start of the line number information for this psymtab. */ | |
121 | unsigned int lineno_off; | |
122 | }; | |
123 | ||
124 | /* Remember what we deduced to be the source language of this psymtab. */ | |
125 | ||
126 | static enum language psymtab_language = language_unknown; | |
127 | ||
128 | \f | |
e38e0312 JG |
129 | /* Simplified internal version of coff symbol table information */ |
130 | ||
131 | struct coff_symbol { | |
132 | char *c_name; | |
133 | int c_symnum; /* symbol number of this entry */ | |
d4a0983a | 134 | int c_naux; /* 0 if syment only, 1 if syment + auxent */ |
e38e0312 | 135 | long c_value; |
ef5b809c | 136 | unsigned char c_sclass; |
e38e0312 JG |
137 | int c_secnum; |
138 | unsigned int c_type; | |
139 | }; | |
140 | ||
e38e0312 JG |
141 | /* last function's saved coff symbol `cs' */ |
142 | ||
143 | static struct coff_symbol fcn_cs_saved; | |
144 | ||
145 | static bfd *symfile_bfd; | |
146 | ||
147 | /* Core address of start and end of text of current source file. | |
148 | This is calculated from the first function seen after a C_FILE | |
149 | symbol. */ | |
150 | ||
818de002 | 151 | |
e38e0312 JG |
152 | static CORE_ADDR cur_src_end_addr; |
153 | ||
154 | /* Core address of the end of the first object file. */ | |
155 | ||
156 | static CORE_ADDR first_object_file_end; | |
157 | ||
e38e0312 JG |
158 | /* initial symbol-table-debug-string vector length */ |
159 | ||
160 | #define INITIAL_STABVECTOR_LENGTH 40 | |
161 | ||
e38e0312 JG |
162 | /* Nonzero if within a function (so symbols should be local, |
163 | if nothing says specifically). */ | |
164 | ||
165 | int within_function; | |
166 | ||
a367db89 JK |
167 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
168 | there is any reason not to just use a #define, but might as well | |
169 | ask BFD for the size and store it here, I guess. */ | |
e38e0312 JG |
170 | |
171 | static unsigned local_symesz; | |
172 | ||
e38e0312 JG |
173 | struct coff_symfile_info { |
174 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
175 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
a367db89 JK |
176 | |
177 | /* Pointer to the string table. */ | |
178 | char *strtbl; | |
179 | ||
180 | /* Pointer to debug section. */ | |
181 | char *debugsec; | |
182 | ||
183 | /* Pointer to the a.out symbol table. */ | |
184 | char *symtbl; | |
185 | ||
186 | /* Number of symbols in symtbl. */ | |
187 | int symtbl_num_syms; | |
e38e0312 JG |
188 | }; |
189 | ||
dd469789 JG |
190 | static struct complaint storclass_complaint = |
191 | {"Unexpected storage class: %d", 0, 0}; | |
192 | ||
193 | static struct complaint bf_notfound_complaint = | |
194 | {"line numbers off, `.bf' symbol not found", 0, 0}; | |
e38e0312 | 195 | |
df1e1074 PS |
196 | static struct complaint ef_complaint = |
197 | {"Mismatched .ef symbol ignored starting at symnum %d", 0, 0}; | |
198 | ||
199 | static struct complaint eb_complaint = | |
200 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
f8203ed0 | 201 | |
6e0949ae FF |
202 | static void |
203 | xcoff_initial_scan PARAMS ((struct objfile *, struct section_offsets *, int)); | |
204 | ||
205 | static void | |
206 | scan_xcoff_symtab PARAMS ((struct section_offsets *, struct objfile *)); | |
207 | ||
208 | static char * | |
209 | xcoff_next_symbol_text PARAMS ((struct objfile *)); | |
210 | ||
211 | static void | |
212 | record_include_begin PARAMS ((struct coff_symbol *)); | |
213 | ||
1ab3bf1b | 214 | static void |
818de002 PB |
215 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
216 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 217 | |
1ab3bf1b | 218 | static void |
d5931d79 | 219 | init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *)); |
1ab3bf1b JG |
220 | |
221 | static void | |
9b280a7f | 222 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
223 | |
224 | static void | |
9b280a7f | 225 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d | 226 | |
1ab3bf1b | 227 | static void |
9b280a7f | 228 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 229 | |
fe0b60b2 | 230 | static struct section_offsets * |
9b280a7f | 231 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 232 | |
1ab3bf1b JG |
233 | static void |
234 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
235 | ||
e8abe489 | 236 | static char * |
a367db89 | 237 | coff_getfilename PARAMS ((union internal_auxent *, struct objfile *)); |
e8abe489 | 238 | |
3c02636b JK |
239 | static void |
240 | read_symbol PARAMS ((struct internal_syment *, int)); | |
241 | ||
1ab3bf1b | 242 | static int |
c84a96d7 | 243 | read_symbol_lineno PARAMS ((int)); |
1ab3bf1b JG |
244 | |
245 | static int | |
c84a96d7 | 246 | read_symbol_nvalue PARAMS ((int)); |
1ab3bf1b JG |
247 | |
248 | static struct symbol * | |
249 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
250 | ||
251 | static void | |
a367db89 | 252 | read_xcoff_symtab PARAMS ((struct partial_symtab *)); |
1ab3bf1b | 253 | |
6e0949ae | 254 | #if 0 |
1ab3bf1b JG |
255 | static void |
256 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
6e0949ae FF |
257 | #endif |
258 | ||
259 | static int | |
260 | compare_lte PARAMS ((const void *, const void *)); | |
261 | ||
262 | static struct linetable * | |
263 | arrange_linetable PARAMS ((struct linetable *)); | |
264 | ||
265 | static void | |
266 | record_include_end PARAMS ((struct coff_symbol *)); | |
267 | ||
268 | static void | |
269 | process_linenos PARAMS ((CORE_ADDR, CORE_ADDR)); | |
1ab3bf1b | 270 | |
a81ce07d | 271 | \f |
a367db89 JK |
272 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
273 | code. */ | |
274 | static int secnum_to_section PARAMS ((int, struct objfile *)); | |
211b564e | 275 | static asection * secnum_to_bfd_section PARAMS ((int, struct objfile *)); |
a81ce07d JK |
276 | |
277 | struct find_targ_sec_arg { | |
278 | int targ_index; | |
279 | int *resultp; | |
211b564e | 280 | asection **bfd_sect; |
a81ce07d JK |
281 | }; |
282 | ||
283 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
284 | ||
285 | static void find_targ_sec (abfd, sect, obj) | |
286 | bfd *abfd; | |
287 | asection *sect; | |
288 | PTR obj; | |
289 | { | |
290 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
291 | if (sect->target_index == args->targ_index) | |
292 | { | |
293 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
294 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
295 | *args->resultp = SECT_OFF_TEXT; | |
296 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
297 | *args->resultp = SECT_OFF_DATA; | |
298 | else | |
299 | *args->resultp = SECT_OFF_BSS; | |
211b564e | 300 | *args->bfd_sect = sect; |
a81ce07d JK |
301 | } |
302 | } | |
303 | ||
304 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
305 | static int | |
a367db89 JK |
306 | secnum_to_section (secnum, objfile) |
307 | int secnum; | |
a81ce07d JK |
308 | struct objfile *objfile; |
309 | { | |
310 | int off = SECT_OFF_TEXT; | |
211b564e | 311 | asection *sect = NULL; |
a81ce07d | 312 | struct find_targ_sec_arg args; |
a367db89 | 313 | args.targ_index = secnum; |
a81ce07d | 314 | args.resultp = &off; |
211b564e | 315 | args.bfd_sect = § |
a81ce07d JK |
316 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
317 | return off; | |
318 | } | |
211b564e PS |
319 | |
320 | /* Return the BFD section that CS points to. */ | |
321 | static asection * | |
322 | secnum_to_bfd_section (secnum, objfile) | |
323 | int secnum; | |
324 | struct objfile *objfile; | |
325 | { | |
326 | int off = SECT_OFF_TEXT; | |
327 | asection *sect = NULL; | |
328 | struct find_targ_sec_arg args; | |
329 | args.targ_index = secnum; | |
330 | args.resultp = &off; | |
331 | args.bfd_sect = § | |
332 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
333 | return sect; | |
334 | } | |
a81ce07d | 335 | \f |
e38e0312 JG |
336 | /* add a given stab string into given stab vector. */ |
337 | ||
6e0949ae FF |
338 | #if 0 |
339 | ||
e38e0312 JG |
340 | static void |
341 | add_stab_to_list (stabname, stabvector) | |
342 | char *stabname; | |
343 | struct pending_stabs **stabvector; | |
344 | { | |
345 | if ( *stabvector == NULL) { | |
346 | *stabvector = (struct pending_stabs *) | |
347 | xmalloc (sizeof (struct pending_stabs) + | |
348 | INITIAL_STABVECTOR_LENGTH * sizeof (char*)); | |
349 | (*stabvector)->count = 0; | |
350 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
351 | } | |
352 | else if ((*stabvector)->count >= (*stabvector)->length) { | |
353 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
354 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 355 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
356 | (*stabvector)->length * sizeof (char*)); |
357 | } | |
358 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
359 | } | |
6e0949ae FF |
360 | |
361 | #endif | |
362 | ||
194d98c6 JK |
363 | \f |
364 | /* Linenos are processed on a file-by-file basis. | |
365 | ||
366 | Two reasons: | |
367 | ||
368 | 1) xlc (IBM's native c compiler) postpones static function code | |
369 | emission to the end of a compilation unit. This way it can | |
370 | determine if those functions (statics) are needed or not, and | |
371 | can do some garbage collection (I think). This makes line | |
372 | numbers and corresponding addresses unordered, and we end up | |
373 | with a line table like: | |
374 | ||
375 | ||
376 | lineno addr | |
377 | foo() 10 0x100 | |
378 | 20 0x200 | |
379 | 30 0x300 | |
380 | ||
381 | foo3() 70 0x400 | |
382 | 80 0x500 | |
383 | 90 0x600 | |
384 | ||
385 | static foo2() | |
386 | 40 0x700 | |
387 | 50 0x800 | |
388 | 60 0x900 | |
389 | ||
390 | and that breaks gdb's binary search on line numbers, if the | |
391 | above table is not sorted on line numbers. And that sort | |
392 | should be on function based, since gcc can emit line numbers | |
393 | like: | |
394 | ||
395 | 10 0x100 - for the init/test part of a for stmt. | |
396 | 20 0x200 | |
397 | 30 0x300 | |
398 | 10 0x400 - for the increment part of a for stmt. | |
e38e0312 | 399 | |
194d98c6 | 400 | arrange_linetable() will do this sorting. |
e38e0312 | 401 | |
194d98c6 | 402 | 2) aix symbol table might look like: |
818de002 | 403 | |
194d98c6 JK |
404 | c_file // beginning of a new file |
405 | .bi // beginning of include file | |
406 | .ei // end of include file | |
407 | .bi | |
408 | .ei | |
818de002 | 409 | |
194d98c6 JK |
410 | basically, .bi/.ei pairs do not necessarily encapsulate |
411 | their scope. They need to be recorded, and processed later | |
412 | on when we come the end of the compilation unit. | |
413 | Include table (inclTable) and process_linenos() handle | |
414 | that. */ | |
818de002 PB |
415 | |
416 | /* compare line table entry addresses. */ | |
417 | ||
194d98c6 | 418 | static int |
6e0949ae FF |
419 | compare_lte (lte1p, lte2p) |
420 | const void *lte1p; | |
421 | const void *lte2p; | |
818de002 | 422 | { |
6e0949ae FF |
423 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; |
424 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
818de002 PB |
425 | return lte1->pc - lte2->pc; |
426 | } | |
427 | ||
3f37b696 FF |
428 | /* Given a line table with function entries are marked, arrange its functions |
429 | in ascending order and strip off function entry markers and return it in | |
818de002 | 430 | a newly created table. If the old one is good enough, return the old one. */ |
c438b3af JK |
431 | /* FIXME: I think all this stuff can be replaced by just passing |
432 | sort_linevec = 1 to end_symtab. */ | |
818de002 PB |
433 | |
434 | static struct linetable * | |
435 | arrange_linetable (oldLineTb) | |
a367db89 | 436 | struct linetable *oldLineTb; /* old linetable */ |
818de002 PB |
437 | { |
438 | int ii, jj, | |
439 | newline, /* new line count */ | |
440 | function_count; /* # of functions */ | |
441 | ||
442 | struct linetable_entry *fentry; /* function entry vector */ | |
443 | int fentry_size; /* # of function entries */ | |
444 | struct linetable *newLineTb; /* new line table */ | |
445 | ||
446 | #define NUM_OF_FUNCTIONS 20 | |
447 | ||
448 | fentry_size = NUM_OF_FUNCTIONS; | |
449 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 450 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
451 | |
452 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
453 | ||
454 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
455 | ||
456 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
457 | fentry_size *= 2; | |
458 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 459 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
460 | } |
461 | fentry[function_count].line = ii; | |
462 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
463 | ++function_count; | |
464 | } | |
465 | } | |
466 | ||
467 | if (function_count == 0) { | |
468 | free (fentry); | |
469 | return oldLineTb; | |
470 | } | |
471 | else if (function_count > 1) | |
472 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
473 | ||
474 | /* allocate a new line table. */ | |
ecfd2b60 JK |
475 | newLineTb = (struct linetable *) |
476 | xmalloc | |
477 | (sizeof (struct linetable) + | |
478 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
818de002 PB |
479 | |
480 | /* if line table does not start with a function beginning, copy up until | |
481 | a function begin. */ | |
482 | ||
483 | newline = 0; | |
484 | if (oldLineTb->item[0].line != 0) | |
485 | for (newline=0; | |
486 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
487 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
488 | ||
489 | /* Now copy function lines one by one. */ | |
490 | ||
491 | for (ii=0; ii < function_count; ++ii) { | |
492 | for (jj = fentry[ii].line + 1; | |
493 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
494 | ++jj, ++newline) | |
495 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
496 | } | |
497 | free (fentry); | |
498 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
499 | return newLineTb; | |
500 | } | |
501 | ||
818de002 PB |
502 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the |
503 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
504 | we will determine if we should create additional symtab's to | |
505 | represent if (the include files. */ | |
506 | ||
507 | ||
508 | typedef struct _inclTable { | |
509 | char *name; /* include filename */ | |
2aefe6e4 JK |
510 | |
511 | /* Offsets to the line table. end points to the last entry which is | |
512 | part of this include file. */ | |
513 | int begin, end; | |
514 | ||
818de002 PB |
515 | struct subfile *subfile; |
516 | unsigned funStartLine; /* start line # of its function */ | |
517 | } InclTable; | |
518 | ||
519 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
520 | static InclTable *inclTable; /* global include table */ | |
521 | static int inclIndx; /* last entry to table */ | |
522 | static int inclLength; /* table length */ | |
523 | static int inclDepth; /* nested include depth */ | |
524 | ||
7f4c8595 | 525 | static void allocate_include_entry PARAMS ((void)); |
818de002 PB |
526 | |
527 | static void | |
528 | record_include_begin (cs) | |
529 | struct coff_symbol *cs; | |
530 | { | |
818de002 | 531 | if (inclDepth) |
486b440e JK |
532 | { |
533 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
534 | of course, but in corresponding .s files.). */ | |
535 | ||
67240bb8 JK |
536 | /* This can happen with old versions of GCC. |
537 | GCC 2.3.3-930426 does not exhibit this on a test case which | |
538 | a user said produced the message for him. */ | |
b646b438 | 539 | static struct complaint msg = {"Nested C_BINCL symbols", 0, 0}; |
486b440e JK |
540 | complain (&msg); |
541 | } | |
818de002 PB |
542 | ++inclDepth; |
543 | ||
7f4c8595 | 544 | allocate_include_entry (); |
818de002 PB |
545 | |
546 | inclTable [inclIndx].name = cs->c_name; | |
547 | inclTable [inclIndx].begin = cs->c_value; | |
548 | } | |
549 | ||
818de002 PB |
550 | static void |
551 | record_include_end (cs) | |
552 | struct coff_symbol *cs; | |
553 | { | |
554 | InclTable *pTbl; | |
555 | ||
556 | if (inclDepth == 0) | |
486b440e | 557 | { |
b646b438 | 558 | static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; |
486b440e JK |
559 | complain (&msg); |
560 | } | |
818de002 | 561 | |
7f4c8595 SS |
562 | allocate_include_entry (); |
563 | ||
818de002 PB |
564 | pTbl = &inclTable [inclIndx]; |
565 | pTbl->end = cs->c_value; | |
566 | ||
567 | --inclDepth; | |
568 | ++inclIndx; | |
569 | } | |
570 | ||
7f4c8595 SS |
571 | static void |
572 | allocate_include_entry () | |
573 | { | |
574 | if (inclTable == NULL) | |
575 | { | |
576 | inclTable = (InclTable *) | |
577 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
578 | memset (inclTable, | |
579 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
580 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
581 | inclIndx = 0; | |
582 | } | |
583 | else if (inclIndx >= inclLength) | |
584 | { | |
585 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
586 | inclTable = (InclTable *) | |
587 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
588 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, | |
589 | '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
590 | } | |
591 | } | |
818de002 | 592 | |
a367db89 JK |
593 | /* Global variable to pass the psymtab down to all the routines involved |
594 | in psymtab to symtab processing. */ | |
595 | static struct partial_symtab *this_symtab_psymtab; | |
596 | ||
7f4c8595 SS |
597 | /* given the start and end addresses of a compilation unit (or a csect, |
598 | at times) process its lines and create appropriate line vectors. */ | |
818de002 PB |
599 | |
600 | static void | |
601 | process_linenos (start, end) | |
a367db89 | 602 | CORE_ADDR start, end; |
818de002 | 603 | { |
818de002 | 604 | int offset, ii; |
a367db89 JK |
605 | file_ptr max_offset = |
606 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
607 | ->max_lineno_offset; | |
818de002 | 608 | |
5cba5d26 JK |
609 | /* subfile structure for the main compilation unit. */ |
610 | struct subfile main_subfile; | |
818de002 | 611 | |
5cba5d26 JK |
612 | /* In the main source file, any time we see a function entry, we |
613 | reset this variable to function's absolute starting line number. | |
614 | All the following line numbers in the function are relative to | |
615 | this, and we record absolute line numbers in record_line(). */ | |
818de002 | 616 | |
df1e1074 | 617 | unsigned int main_source_baseline = 0; |
818de002 | 618 | |
818de002 | 619 | unsigned *firstLine; |
818de002 | 620 | |
a367db89 JK |
621 | offset = |
622 | ((struct symloc *)this_symtab_psymtab->read_symtab_private)->lineno_off; | |
623 | if (offset == 0) | |
818de002 PB |
624 | goto return_after_cleanup; |
625 | ||
4ed97c9a | 626 | memset (&main_subfile, '\0', sizeof (main_subfile)); |
818de002 PB |
627 | |
628 | if (inclIndx == 0) | |
556f3d90 PB |
629 | /* All source lines were in the main source file. None in include files. */ |
630 | ||
818de002 PB |
631 | enter_line_range (&main_subfile, offset, 0, start, end, |
632 | &main_source_baseline); | |
633 | ||
5cba5d26 JK |
634 | else |
635 | { | |
636 | /* There was source with line numbers in include files. */ | |
637 | main_source_baseline = 0; | |
638 | for (ii=0; ii < inclIndx; ++ii) | |
639 | { | |
640 | struct subfile *tmpSubfile; | |
818de002 | 641 | |
5cba5d26 JK |
642 | /* If there is main file source before include file, enter it. */ |
643 | if (offset < inclTable[ii].begin) | |
644 | { | |
645 | enter_line_range | |
646 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, | |
647 | start, 0, &main_source_baseline); | |
648 | } | |
818de002 | 649 | |
5cba5d26 | 650 | /* Have a new subfile for the include file. */ |
818de002 | 651 | |
5cba5d26 JK |
652 | tmpSubfile = inclTable[ii].subfile = |
653 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
818de002 | 654 | |
5cba5d26 JK |
655 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
656 | firstLine = &(inclTable[ii].funStartLine); | |
818de002 | 657 | |
5cba5d26 JK |
658 | /* Enter include file's lines now. */ |
659 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
660 | inclTable[ii].end, start, 0, firstLine); | |
818de002 | 661 | |
d2fee216 | 662 | if (offset <= inclTable[ii].end) |
fc564b18 | 663 | offset = inclTable[ii].end + LINESZ; |
5cba5d26 | 664 | } |
818de002 | 665 | |
5cba5d26 JK |
666 | /* All the include files' line have been processed at this point. Now, |
667 | enter remaining lines of the main file, if any left. */ | |
a367db89 | 668 | if (offset < max_offset + 1 - LINESZ) |
5cba5d26 JK |
669 | { |
670 | enter_line_range (&main_subfile, offset, 0, start, end, | |
671 | &main_source_baseline); | |
672 | } | |
818de002 PB |
673 | } |
674 | ||
5cba5d26 JK |
675 | /* Process main file's line numbers. */ |
676 | if (main_subfile.line_vector) | |
677 | { | |
678 | struct linetable *lineTb, *lv; | |
818de002 | 679 | |
5cba5d26 | 680 | lv = main_subfile.line_vector; |
818de002 | 681 | |
5cba5d26 JK |
682 | /* Line numbers are not necessarily ordered. xlc compilation will |
683 | put static function to the end. */ | |
818de002 | 684 | |
5cba5d26 JK |
685 | lineTb = arrange_linetable (lv); |
686 | if (lv == lineTb) | |
687 | { | |
688 | current_subfile->line_vector = (struct linetable *) | |
689 | xrealloc (lv, (sizeof (struct linetable) | |
690 | + lv->nitems * sizeof (struct linetable_entry))); | |
691 | } | |
692 | else | |
693 | { | |
694 | free (lv); | |
695 | current_subfile->line_vector = lineTb; | |
696 | } | |
818de002 | 697 | |
5cba5d26 JK |
698 | current_subfile->line_vector_length = |
699 | current_subfile->line_vector->nitems; | |
818de002 | 700 | } |
818de002 | 701 | |
5cba5d26 | 702 | /* Now, process included files' line numbers. */ |
818de002 | 703 | |
5cba5d26 JK |
704 | for (ii=0; ii < inclIndx; ++ii) |
705 | { | |
706 | if ((inclTable[ii].subfile)->line_vector) /* Useless if!!! FIXMEmgo */ | |
707 | { | |
708 | struct linetable *lineTb, *lv; | |
818de002 | 709 | |
5cba5d26 | 710 | lv = (inclTable[ii].subfile)->line_vector; |
818de002 | 711 | |
5cba5d26 JK |
712 | /* Line numbers are not necessarily ordered. xlc compilation will |
713 | put static function to the end. */ | |
818de002 | 714 | |
5cba5d26 | 715 | lineTb = arrange_linetable (lv); |
818de002 | 716 | |
5cba5d26 | 717 | push_subfile (); |
818de002 | 718 | |
5cba5d26 JK |
719 | /* For the same include file, we might want to have more than one |
720 | subfile. This happens if we have something like: | |
818de002 | 721 | |
818de002 PB |
722 | ...... |
723 | #include "foo.h" | |
724 | ...... | |
725 | #include "foo.h" | |
726 | ...... | |
727 | ||
5cba5d26 JK |
728 | while foo.h including code in it. (stupid but possible) |
729 | Since start_subfile() looks at the name and uses an | |
730 | existing one if finds, we need to provide a fake name and | |
731 | fool it. */ | |
732 | ||
733 | #if 0 | |
734 | start_subfile (inclTable[ii].name, (char*)0); | |
735 | #else | |
736 | { | |
737 | /* Pick a fake name that will produce the same results as this | |
738 | one when passed to deduce_language_from_filename. Kludge on | |
739 | top of kludge. */ | |
740 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
741 | if (fakename == NULL) | |
742 | fakename = " ?"; | |
743 | start_subfile (fakename, (char*)0); | |
744 | free (current_subfile->name); | |
745 | } | |
746 | current_subfile->name = strdup (inclTable[ii].name); | |
747 | #endif | |
818de002 | 748 | |
5cba5d26 JK |
749 | if (lv == lineTb) |
750 | { | |
751 | current_subfile->line_vector = | |
752 | (struct linetable *) xrealloc | |
753 | (lv, (sizeof (struct linetable) | |
818de002 PB |
754 | + lv->nitems * sizeof (struct linetable_entry))); |
755 | ||
5cba5d26 JK |
756 | } |
757 | else | |
758 | { | |
759 | free (lv); | |
760 | current_subfile->line_vector = lineTb; | |
761 | } | |
818de002 | 762 | |
5cba5d26 JK |
763 | current_subfile->line_vector_length = |
764 | current_subfile->line_vector->nitems; | |
765 | start_subfile (pop_subfile (), (char*)0); | |
766 | } | |
818de002 | 767 | } |
818de002 | 768 | |
5cba5d26 | 769 | return_after_cleanup: |
818de002 | 770 | |
5cba5d26 | 771 | /* We don't want to keep alloc/free'ing the global include file table. */ |
818de002 PB |
772 | inclIndx = 0; |
773 | ||
5cba5d26 | 774 | /* Start with a fresh subfile structure for the next file. */ |
4ed97c9a | 775 | memset (&main_subfile, '\0', sizeof (struct subfile)); |
818de002 PB |
776 | } |
777 | ||
778 | void | |
779 | aix_process_linenos () | |
780 | { | |
781 | /* process line numbers and enter them into line vector */ | |
782 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
783 | } | |
784 | ||
785 | ||
e38e0312 JG |
786 | /* Enter a given range of lines into the line vector. |
787 | can be called in the following two ways: | |
818de002 | 788 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
2aefe6e4 JK |
789 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) |
790 | ||
791 | endoffset points to the last line table entry that we should pay | |
792 | attention to. */ | |
e38e0312 JG |
793 | |
794 | static void | |
a367db89 JK |
795 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, |
796 | firstLine) | |
797 | struct subfile *subfile; | |
798 | unsigned beginoffset, endoffset; /* offsets to line table */ | |
799 | CORE_ADDR startaddr, endaddr; | |
800 | unsigned *firstLine; | |
e38e0312 | 801 | { |
a367db89 JK |
802 | unsigned int curoffset; |
803 | CORE_ADDR addr; | |
804 | struct external_lineno ext_lnno; | |
805 | struct internal_lineno int_lnno; | |
806 | unsigned int limit_offset; | |
807 | bfd *abfd; | |
818de002 | 808 | |
a367db89 JK |
809 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) |
810 | return; | |
811 | curoffset = beginoffset; | |
812 | limit_offset = | |
813 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
814 | ->max_lineno_offset; | |
e38e0312 | 815 | |
a367db89 | 816 | if (endoffset != 0) |
2aefe6e4 | 817 | { |
a367db89 JK |
818 | if (endoffset >= limit_offset) |
819 | { | |
820 | static struct complaint msg = | |
821 | {"Bad line table offset in C_EINCL directive", 0, 0}; | |
822 | complain (&msg); | |
823 | return; | |
824 | } | |
825 | limit_offset = endoffset; | |
2aefe6e4 | 826 | } |
a367db89 JK |
827 | else |
828 | limit_offset -= 1; | |
829 | abfd = this_symtab_psymtab->objfile->obfd; | |
e38e0312 | 830 | |
a367db89 JK |
831 | while (curoffset <= limit_offset) |
832 | { | |
833 | bfd_seek (abfd, curoffset, SEEK_SET); | |
834 | bfd_read (&ext_lnno, sizeof (struct external_lineno), 1, abfd); | |
835 | bfd_coff_swap_lineno_in (abfd, &ext_lnno, &int_lnno); | |
e38e0312 | 836 | |
a367db89 JK |
837 | /* Find the address this line represents. */ |
838 | addr = (int_lnno.l_lnno | |
839 | ? int_lnno.l_addr.l_paddr | |
840 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
841 | addr += ANOFFSET (this_symtab_psymtab->objfile->section_offsets, | |
842 | SECT_OFF_TEXT); | |
e38e0312 | 843 | |
a367db89 JK |
844 | if (addr < startaddr || (endaddr && addr >= endaddr)) |
845 | return; | |
e38e0312 | 846 | |
a367db89 JK |
847 | if (int_lnno.l_lnno == 0) |
848 | { | |
849 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
850 | record_line (subfile, 0, addr); | |
851 | --(*firstLine); | |
852 | } | |
853 | else | |
854 | record_line (subfile, *firstLine + int_lnno.l_lnno, addr); | |
855 | curoffset += LINESZ; | |
e38e0312 | 856 | } |
818de002 PB |
857 | } |
858 | ||
818de002 | 859 | |
e38e0312 JG |
860 | /* Save the vital information for use when closing off the current file. |
861 | NAME is the file name the symbols came from, START_ADDR is the first | |
862 | text address for the file, and SIZE is the number of bytes of text. */ | |
863 | ||
864 | #define complete_symtab(name, start_addr) { \ | |
865 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 866 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
867 | } |
868 | ||
869 | ||
870 | /* Refill the symbol table input buffer | |
871 | and set the variables that control fetching entries from it. | |
872 | Reports an error if no data available. | |
873 | This function can read past the end of the symbol table | |
874 | (into the string table) but this does no harm. */ | |
875 | ||
876 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
877 | than functions. */ | |
878 | ||
a367db89 | 879 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \ |
e38e0312 JG |
880 | { \ |
881 | char *namestr; \ | |
a81ce07d JK |
882 | namestr = (NAME); \ |
883 | if (namestr[0] == '.') ++namestr; \ | |
3c02636b | 884 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ |
86fdcdaf | 885 | (char *)NULL, (SECTION), (asection *)NULL, (OBJFILE)); \ |
818de002 | 886 | misc_func_recorded = 1; \ |
e38e0312 JG |
887 | } |
888 | ||
889 | ||
9b280a7f | 890 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
891 | nested. At any given time, a symbol can only be in one static block. |
892 | This is the base address of current static block, zero if non exists. */ | |
893 | ||
894 | static int static_block_base = 0; | |
895 | ||
3c02636b JK |
896 | /* Section number for the current static block. */ |
897 | ||
898 | static int static_block_section = -1; | |
899 | ||
e38e0312 JG |
900 | /* true if space for symbol name has been allocated. */ |
901 | ||
902 | static int symname_alloced = 0; | |
903 | ||
34d265dc JK |
904 | /* Next symbol to read. Pointer into raw seething symbol table. */ |
905 | ||
906 | static char *raw_symbol; | |
907 | ||
908 | /* This is the function which stabsread.c calls to get symbol | |
909 | continuations. */ | |
6e0949ae | 910 | |
34d265dc | 911 | static char * |
2dd30c72 FF |
912 | xcoff_next_symbol_text (objfile) |
913 | struct objfile *objfile; | |
34d265dc JK |
914 | { |
915 | struct internal_syment symbol; | |
916 | static struct complaint msg = | |
917 | {"Unexpected symbol continuation", 0, 0}; | |
963dbabe | 918 | char *retval; |
2dd30c72 FF |
919 | /* FIXME: is this the same as the passed arg? */ |
920 | objfile = this_symtab_psymtab->objfile; | |
34d265dc | 921 | |
a367db89 | 922 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); |
afbdbbd7 | 923 | if (symbol.n_zeroes) |
963dbabe JK |
924 | { |
925 | complain (&msg); | |
926 | ||
927 | /* Return something which points to '\0' and hope the symbol reading | |
928 | code does something reasonable. */ | |
929 | retval = ""; | |
930 | } | |
afbdbbd7 | 931 | else if (symbol.n_sclass & 0x80) |
963dbabe | 932 | { |
a367db89 JK |
933 | retval = |
934 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec | |
935 | + symbol.n_offset; | |
936 | raw_symbol += | |
937 | coff_data (objfile->obfd)->local_symesz; | |
963dbabe JK |
938 | ++symnum; |
939 | } | |
34d265dc | 940 | else |
963dbabe JK |
941 | { |
942 | complain (&msg); | |
943 | ||
944 | /* Return something which points to '\0' and hope the symbol reading | |
945 | code does something reasonable. */ | |
946 | retval = ""; | |
947 | } | |
948 | return retval; | |
34d265dc JK |
949 | } |
950 | ||
a367db89 | 951 | /* Read symbols for a given partial symbol table. */ |
e38e0312 | 952 | |
1ab3bf1b | 953 | static void |
a367db89 JK |
954 | read_xcoff_symtab (pst) |
955 | struct partial_symtab *pst; | |
e38e0312 | 956 | { |
a367db89 | 957 | struct objfile *objfile = pst->objfile; |
e38e0312 | 958 | bfd *abfd = objfile->obfd; |
e38e0312 | 959 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ |
a367db89 JK |
960 | char *strtbl = ((struct coff_symfile_info *)objfile->sym_private)->strtbl; |
961 | char *debugsec = | |
962 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec; | |
818de002 | 963 | |
e38e0312 | 964 | struct internal_syment symbol[1]; |
6657a0c7 | 965 | union internal_auxent main_aux; |
e38e0312 JG |
966 | struct coff_symbol cs[1]; |
967 | CORE_ADDR file_start_addr = 0; | |
968 | CORE_ADDR file_end_addr = 0; | |
969 | ||
970 | int next_file_symnum = -1; | |
a367db89 | 971 | unsigned int max_symnum; |
e38e0312 JG |
972 | int just_started = 1; |
973 | int depth = 0; | |
df1e1074 | 974 | int fcn_start_addr = 0; |
e38e0312 | 975 | |
1eeba686 PB |
976 | struct coff_symbol fcn_stab_saved; |
977 | ||
e38e0312 JG |
978 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
979 | union internal_auxent fcn_aux_saved; | |
980 | struct context_stack *new; | |
981 | ||
982 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
983 | |
984 | char *last_csect_name; /* last seen csect's name and value */ | |
985 | CORE_ADDR last_csect_val; | |
3c02636b | 986 | int last_csect_sec; |
e38e0312 | 987 | |
a367db89 | 988 | this_symtab_psymtab = pst; |
1ab3bf1b | 989 | |
a81ce07d JK |
990 | /* Get the appropriate COFF "constants" related to the file we're |
991 | handling. */ | |
e38e0312 JG |
992 | local_symesz = coff_data (abfd)->local_symesz; |
993 | ||
d07734e3 | 994 | last_source_file = NULL; |
818de002 PB |
995 | last_csect_name = 0; |
996 | last_csect_val = 0; | |
e38e0312 | 997 | |
d07734e3 | 998 | start_stabs (); |
e38e0312 | 999 | start_symtab (filestring, (char *)NULL, file_start_addr); |
609fd033 | 1000 | record_debugformat ("XCOFF"); |
a367db89 JK |
1001 | symnum = ((struct symloc *)pst->read_symtab_private)->first_symnum; |
1002 | max_symnum = | |
1003 | symnum + ((struct symloc *)pst->read_symtab_private)->numsyms; | |
e38e0312 JG |
1004 | first_object_file_end = 0; |
1005 | ||
a367db89 JK |
1006 | raw_symbol = |
1007 | ((struct coff_symfile_info *) objfile->sym_private)->symtbl | |
1008 | + symnum * local_symesz; | |
34d265dc | 1009 | |
a367db89 | 1010 | while (symnum < max_symnum) |
a81ce07d | 1011 | { |
e38e0312 | 1012 | |
a81ce07d | 1013 | QUIT; /* make this command interruptable. */ |
e38e0312 | 1014 | |
a81ce07d JK |
1015 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ |
1016 | /* read one symbol into `cs' structure. After processing the | |
1017 | whole symbol table, only string table will be kept in memory, | |
1018 | symbol table and debug section of xcoff will be freed. Thus | |
1019 | we can mark symbols with names in string table as | |
1020 | `alloced'. */ | |
1021 | { | |
1022 | int ii; | |
1023 | ||
1024 | /* Swap and align the symbol into a reasonable C structure. */ | |
1025 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1026 | ||
1027 | cs->c_symnum = symnum; | |
1028 | cs->c_naux = symbol->n_numaux; | |
1029 | if (symbol->n_zeroes) | |
786757a9 | 1030 | { |
a81ce07d JK |
1031 | symname_alloced = 0; |
1032 | /* We must use the original, unswapped, name here so the name field | |
1033 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1034 | we use the new field, it gets overwritten for each symbol. */ | |
1035 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
1036 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
1037 | '\0'-terminated. */ | |
1038 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1039 | { | |
1040 | char *p; | |
1041 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); | |
1042 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1043 | p[E_SYMNMLEN] = '\0'; | |
1044 | cs->c_name = p; | |
1045 | symname_alloced = 1; | |
1046 | } | |
1047 | } | |
1048 | else if (symbol->n_sclass & 0x80) | |
1049 | { | |
1050 | cs->c_name = debugsec + symbol->n_offset; | |
1051 | symname_alloced = 0; | |
1052 | } | |
1053 | else | |
1054 | { | |
1055 | /* in string table */ | |
1056 | cs->c_name = strtbl + (int)symbol->n_offset; | |
786757a9 JK |
1057 | symname_alloced = 1; |
1058 | } | |
a81ce07d JK |
1059 | cs->c_value = symbol->n_value; |
1060 | cs->c_sclass = symbol->n_sclass; | |
1061 | cs->c_secnum = symbol->n_scnum; | |
1062 | cs->c_type = (unsigned)symbol->n_type; | |
e38e0312 | 1063 | |
a81ce07d JK |
1064 | raw_symbol += coff_data (abfd)->local_symesz; |
1065 | ++symnum; | |
e38e0312 | 1066 | |
a81ce07d JK |
1067 | /* Save addr of first aux entry. */ |
1068 | raw_auxptr = raw_symbol; | |
e38e0312 | 1069 | |
a81ce07d JK |
1070 | /* Skip all the auxents associated with this symbol. */ |
1071 | for (ii = symbol->n_numaux; ii; --ii) | |
1072 | { | |
1073 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1074 | ++symnum; | |
1075 | } | |
e38e0312 | 1076 | } |
e38e0312 | 1077 | |
a81ce07d JK |
1078 | /* if symbol name starts with ".$" or "$", ignore it. */ |
1079 | if (cs->c_name[0] == '$' | |
1080 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1081 | continue; | |
e38e0312 | 1082 | |
a81ce07d | 1083 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) |
d07734e3 | 1084 | { |
a81ce07d JK |
1085 | if (last_source_file) |
1086 | { | |
a367db89 | 1087 | pst->symtab = |
436d4143 | 1088 | end_symtab (cur_src_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d JK |
1089 | end_stabs (); |
1090 | } | |
e38e0312 | 1091 | |
a81ce07d JK |
1092 | start_stabs (); |
1093 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); | |
609fd033 | 1094 | record_debugformat ("XCOFF"); |
a81ce07d JK |
1095 | cur_src_end_addr = first_object_file_end; |
1096 | /* done with all files, everything from here on is globals */ | |
1097 | } | |
e38e0312 | 1098 | |
a81ce07d JK |
1099 | /* if explicitly specified as a function, treat is as one. */ |
1100 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) | |
1101 | { | |
1102 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1103 | 0, cs->c_naux, &main_aux); | |
1104 | goto function_entry_point; | |
1105 | } | |
e38e0312 | 1106 | |
a81ce07d JK |
1107 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1108 | && cs->c_naux == 1) | |
1109 | { | |
1110 | /* Dealing with a symbol with a csect entry. */ | |
e38e0312 | 1111 | |
a81ce07d JK |
1112 | #define CSECT(PP) ((PP)->x_csect) |
1113 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1114 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1115 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1116 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
e38e0312 | 1117 | |
a81ce07d JK |
1118 | /* Convert the auxent to something we can access. */ |
1119 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1120 | 0, cs->c_naux, &main_aux); | |
e38e0312 | 1121 | |
a81ce07d JK |
1122 | switch (CSECT_SMTYP (&main_aux)) |
1123 | { | |
e38e0312 | 1124 | |
a81ce07d JK |
1125 | case XTY_ER: |
1126 | /* Ignore all external references. */ | |
1127 | continue; | |
e38e0312 | 1128 | |
a81ce07d JK |
1129 | case XTY_SD: |
1130 | /* A section description. */ | |
e38e0312 | 1131 | { |
a81ce07d JK |
1132 | switch (CSECT_SCLAS (&main_aux)) |
1133 | { | |
1134 | ||
1135 | case XMC_PR: | |
1136 | { | |
1137 | ||
1138 | /* A program csect is seen. We have to allocate one | |
1139 | symbol table for each program csect. Normally gdb | |
1140 | prefers one symtab for each source file. In case | |
1141 | of AIX, one source file might include more than one | |
1142 | [PR] csect, and they don't have to be adjacent in | |
1143 | terms of the space they occupy in memory. Thus, one | |
1144 | single source file might get fragmented in the | |
1145 | memory and gdb's file start and end address | |
1146 | approach does not work! GCC (and I think xlc) seem | |
1147 | to put all the code in the unnamed program csect. */ | |
1148 | ||
1149 | if (last_csect_name) | |
1150 | { | |
a81ce07d JK |
1151 | complete_symtab (filestring, file_start_addr); |
1152 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1153 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d JK |
1154 | end_stabs (); |
1155 | start_stabs (); | |
1156 | /* Give all csects for this source file the same | |
1157 | name. */ | |
1158 | start_symtab (filestring, NULL, (CORE_ADDR)0); | |
609fd033 | 1159 | record_debugformat ("XCOFF"); |
a81ce07d JK |
1160 | } |
1161 | ||
1162 | /* If this is the very first csect seen, | |
1163 | basically `__start'. */ | |
1164 | if (just_started) | |
1165 | { | |
1166 | first_object_file_end | |
1167 | = cs->c_value + CSECT_LEN (&main_aux); | |
1168 | just_started = 0; | |
1169 | } | |
1170 | ||
a367db89 JK |
1171 | file_start_addr = |
1172 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
1173 | SECT_OFF_TEXT); | |
1174 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); | |
a81ce07d JK |
1175 | |
1176 | if (cs->c_name && cs->c_name[0] == '.') | |
1177 | { | |
1178 | last_csect_name = cs->c_name; | |
1179 | last_csect_val = cs->c_value; | |
a367db89 | 1180 | last_csect_sec = secnum_to_section (cs->c_secnum, objfile); |
a81ce07d JK |
1181 | } |
1182 | } | |
a81ce07d JK |
1183 | continue; |
1184 | ||
df1e1074 PS |
1185 | /* All other symbols are put into the minimal symbol |
1186 | table only. */ | |
a81ce07d | 1187 | |
df1e1074 PS |
1188 | case XMC_RW: |
1189 | continue; | |
a81ce07d JK |
1190 | |
1191 | case XMC_TC0: | |
a81ce07d JK |
1192 | continue; |
1193 | ||
1194 | case XMC_TC: | |
a367db89 | 1195 | continue; |
e38e0312 | 1196 | |
a81ce07d JK |
1197 | default: |
1198 | /* Ignore the symbol. */ | |
1199 | continue; | |
818de002 | 1200 | } |
e38e0312 | 1201 | } |
e38e0312 JG |
1202 | break; |
1203 | ||
a81ce07d JK |
1204 | case XTY_LD: |
1205 | ||
1206 | switch (CSECT_SCLAS (&main_aux)) | |
1207 | { | |
1208 | case XMC_PR: | |
1209 | /* a function entry point. */ | |
1210 | function_entry_point: | |
a81ce07d | 1211 | |
a81ce07d JK |
1212 | fcn_start_addr = cs->c_value; |
1213 | ||
1214 | /* save the function header info, which will be used | |
1215 | when `.bf' is seen. */ | |
1216 | fcn_cs_saved = *cs; | |
1217 | fcn_aux_saved = main_aux; | |
a81ce07d JK |
1218 | continue; |
1219 | ||
1220 | case XMC_GL: | |
1221 | /* shared library function trampoline code entry point. */ | |
a81ce07d JK |
1222 | continue; |
1223 | ||
1224 | case XMC_DS: | |
1225 | /* The symbols often have the same names as debug symbols for | |
1226 | functions, and confuse lookup_symbol. */ | |
1227 | continue; | |
1228 | ||
1229 | default: | |
1230 | /* xlc puts each variable in a separate csect, so we get | |
1231 | an XTY_SD for each variable. But gcc puts several | |
1232 | variables in a csect, so that each variable only gets | |
df1e1074 PS |
1233 | an XTY_LD. This will typically be XMC_RW; I suspect |
1234 | XMC_RO and XMC_BS might be possible too. | |
1235 | These variables are put in the minimal symbol table | |
1236 | only. */ | |
1237 | continue; | |
a81ce07d | 1238 | } |
df1e1074 PS |
1239 | break; |
1240 | ||
1241 | case XTY_CM: | |
1242 | /* Common symbols are put into the minimal symbol table only. */ | |
1243 | continue; | |
e38e0312 | 1244 | |
a81ce07d JK |
1245 | default: |
1246 | break; | |
e38e0312 | 1247 | } |
a81ce07d | 1248 | } |
e38e0312 | 1249 | |
a81ce07d JK |
1250 | switch (cs->c_sclass) |
1251 | { | |
e38e0312 | 1252 | |
a81ce07d | 1253 | case C_FILE: |
818de002 | 1254 | |
a81ce07d JK |
1255 | /* c_value field contains symnum of next .file entry in table |
1256 | or symnum of first global after last .file. */ | |
818de002 | 1257 | |
a81ce07d | 1258 | next_file_symnum = cs->c_value; |
818de002 | 1259 | |
a81ce07d JK |
1260 | /* Complete symbol table for last object file containing |
1261 | debugging information. */ | |
818de002 | 1262 | |
a81ce07d JK |
1263 | /* Whether or not there was a csect in the previous file, we |
1264 | have to call `end_stabs' and `start_stabs' to reset | |
1265 | type_vector, line_vector, etc. structures. */ | |
818de002 | 1266 | |
a81ce07d JK |
1267 | complete_symtab (filestring, file_start_addr); |
1268 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1269 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d | 1270 | end_stabs (); |
818de002 | 1271 | |
a81ce07d JK |
1272 | /* XCOFF, according to the AIX 3.2 documentation, puts the filename |
1273 | in cs->c_name. But xlc 1.3.0.2 has decided to do things the | |
1274 | standard COFF way and put it in the auxent. We use the auxent if | |
1275 | the symbol is ".file" and an auxent exists, otherwise use the symbol | |
1276 | itself. Simple enough. */ | |
1277 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) | |
1278 | { | |
1279 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1280 | 0, cs->c_naux, &main_aux); | |
a367db89 | 1281 | filestring = coff_getfilename (&main_aux, objfile); |
818de002 | 1282 | } |
a81ce07d JK |
1283 | else |
1284 | filestring = cs->c_name; | |
d4cedfe4 | 1285 | |
a81ce07d JK |
1286 | start_stabs (); |
1287 | start_symtab (filestring, (char *)NULL, (CORE_ADDR)0); | |
609fd033 | 1288 | record_debugformat ("XCOFF"); |
a81ce07d | 1289 | last_csect_name = 0; |
507e4004 | 1290 | |
a81ce07d JK |
1291 | /* reset file start and end addresses. A compilation unit with no text |
1292 | (only data) should have zero file boundaries. */ | |
1293 | file_start_addr = file_end_addr = 0; | |
e38e0312 | 1294 | break; |
e38e0312 | 1295 | |
a81ce07d JK |
1296 | case C_FUN: |
1297 | fcn_stab_saved = *cs; | |
1298 | break; | |
e38e0312 | 1299 | |
a81ce07d JK |
1300 | case C_FCN: |
1301 | if (STREQ (cs->c_name, ".bf")) | |
1302 | { | |
a367db89 JK |
1303 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, |
1304 | SECT_OFF_TEXT); | |
a81ce07d JK |
1305 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1306 | 0, cs->c_naux, &main_aux); | |
818de002 | 1307 | |
a81ce07d | 1308 | within_function = 1; |
818de002 | 1309 | |
a367db89 | 1310 | new = push_context (0, fcn_start_addr + off); |
e38e0312 | 1311 | |
a81ce07d | 1312 | new->name = define_symbol |
a367db89 JK |
1313 | (fcn_cs_saved.c_value + off, |
1314 | fcn_stab_saved.c_name, 0, 0, objfile); | |
a81ce07d | 1315 | if (new->name != NULL) |
a367db89 | 1316 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT; |
a81ce07d JK |
1317 | } |
1318 | else if (STREQ (cs->c_name, ".ef")) | |
1319 | { | |
e38e0312 | 1320 | |
a81ce07d JK |
1321 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1322 | 0, cs->c_naux, &main_aux); | |
1323 | ||
1324 | /* The value of .ef is the address of epilogue code; | |
1325 | not useful for gdb. */ | |
1326 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1327 | contains number of lines to '}' */ | |
1328 | ||
df1e1074 PS |
1329 | if (context_stack_depth <= 0) |
1330 | { /* We attempted to pop an empty context stack */ | |
1331 | complain (&ef_complaint, cs->c_symnum); | |
1332 | within_function = 0; | |
1333 | break; | |
1334 | } | |
a81ce07d | 1335 | new = pop_context (); |
f8203ed0 JK |
1336 | /* Stack must be empty now. */ |
1337 | if (context_stack_depth > 0 || new == NULL) | |
1338 | { | |
1339 | complain (&ef_complaint, cs->c_symnum); | |
1340 | within_function = 0; | |
1341 | break; | |
1342 | } | |
a81ce07d JK |
1343 | |
1344 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1345 | new->start_addr, | |
a367db89 JK |
1346 | (fcn_cs_saved.c_value |
1347 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1348 | + ANOFFSET (objfile->section_offsets, | |
1349 | SECT_OFF_TEXT)), | |
1350 | objfile); | |
a81ce07d JK |
1351 | within_function = 0; |
1352 | } | |
1353 | break; | |
818de002 | 1354 | |
a81ce07d JK |
1355 | case C_BSTAT: |
1356 | /* Begin static block. */ | |
1357 | { | |
1358 | struct internal_syment symbol; | |
af8b7906 | 1359 | |
a81ce07d JK |
1360 | read_symbol (&symbol, cs->c_value); |
1361 | static_block_base = symbol.n_value; | |
a367db89 JK |
1362 | static_block_section = |
1363 | secnum_to_section (symbol.n_scnum, objfile); | |
a81ce07d JK |
1364 | } |
1365 | break; | |
af8b7906 | 1366 | |
a81ce07d JK |
1367 | case C_ESTAT: |
1368 | /* End of static block. */ | |
1369 | static_block_base = 0; | |
1370 | static_block_section = -1; | |
1371 | break; | |
e38e0312 | 1372 | |
a81ce07d JK |
1373 | case C_ARG: |
1374 | case C_REGPARM: | |
f8203ed0 | 1375 | case C_REG: |
a81ce07d JK |
1376 | case C_TPDEF: |
1377 | case C_STRTAG: | |
1378 | case C_UNTAG: | |
1379 | case C_ENTAG: | |
f8203ed0 JK |
1380 | { |
1381 | static struct complaint msg = | |
1382 | {"Unrecognized storage class %d.", 0, 0}; | |
1383 | complain (&msg, cs->c_sclass); | |
1384 | } | |
a81ce07d | 1385 | break; |
e38e0312 | 1386 | |
a81ce07d JK |
1387 | case C_LABEL: |
1388 | case C_NULL: | |
1389 | /* Ignore these. */ | |
1390 | break; | |
e38e0312 | 1391 | |
a81ce07d | 1392 | case C_HIDEXT: |
df1e1074 | 1393 | case C_STAT: |
a81ce07d | 1394 | break; |
e38e0312 | 1395 | |
a81ce07d JK |
1396 | case C_BINCL: |
1397 | /* beginning of include file */ | |
1398 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1399 | order. Thus, when wee see them, we might not know enough info | |
1400 | to process them. Thus, we'll be saving them into a table | |
1401 | (inclTable) and postpone their processing. */ | |
e38e0312 | 1402 | |
a81ce07d JK |
1403 | record_include_begin (cs); |
1404 | break; | |
e38e0312 | 1405 | |
a81ce07d JK |
1406 | case C_EINCL: |
1407 | /* End of include file. */ | |
1408 | /* See the comment after case C_BINCL. */ | |
1409 | record_include_end (cs); | |
1410 | break; | |
1eeba686 | 1411 | |
a81ce07d JK |
1412 | case C_BLOCK: |
1413 | if (STREQ (cs->c_name, ".bb")) | |
1414 | { | |
1415 | depth++; | |
a367db89 JK |
1416 | new = push_context (depth, |
1417 | (cs->c_value | |
1418 | + ANOFFSET (objfile->section_offsets, | |
1419 | SECT_OFF_TEXT))); | |
a81ce07d JK |
1420 | } |
1421 | else if (STREQ (cs->c_name, ".eb")) | |
1422 | { | |
df1e1074 PS |
1423 | if (context_stack_depth <= 0) |
1424 | { /* We attempted to pop an empty context stack */ | |
1425 | complain (&eb_complaint, cs->c_symnum); | |
1426 | break; | |
1427 | } | |
a81ce07d | 1428 | new = pop_context (); |
f8203ed0 JK |
1429 | if (depth-- != new->depth) |
1430 | { | |
df1e1074 | 1431 | complain (&eb_complaint, cs->c_symnum); |
f8203ed0 JK |
1432 | break; |
1433 | } | |
a81ce07d JK |
1434 | if (local_symbols && context_stack_depth > 0) |
1435 | { | |
1436 | /* Make a block for the local symbols within. */ | |
1437 | finish_block (new->name, &local_symbols, new->old_blocks, | |
a367db89 JK |
1438 | new->start_addr, |
1439 | (cs->c_value | |
1440 | + ANOFFSET (objfile->section_offsets, | |
1441 | SECT_OFF_TEXT)), | |
1442 | objfile); | |
a81ce07d JK |
1443 | } |
1444 | local_symbols = new->locals; | |
1445 | } | |
1446 | break; | |
e38e0312 | 1447 | |
a81ce07d JK |
1448 | default: |
1449 | process_xcoff_symbol (cs, objfile); | |
1450 | break; | |
e38e0312 | 1451 | } |
e38e0312 JG |
1452 | } |
1453 | ||
e38e0312 | 1454 | if (last_source_file) |
d07734e3 | 1455 | { |
a367db89 JK |
1456 | struct symtab *s; |
1457 | ||
1458 | complete_symtab (filestring, file_start_addr); | |
1459 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1460 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a367db89 JK |
1461 | /* When reading symbols for the last C_FILE of the objfile, try |
1462 | to make sure that we set pst->symtab to the symtab for the | |
1463 | file, not to the _globals_ symtab. I'm not sure whether this | |
1464 | actually works right or when/if it comes up. */ | |
1465 | if (pst->symtab == NULL) | |
1466 | pst->symtab = s; | |
d07734e3 FF |
1467 | end_stabs (); |
1468 | } | |
e38e0312 JG |
1469 | } |
1470 | ||
1471 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1472 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1473 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1474 | *(SYMBOL2) = *(SYMBOL1); |
1475 | ||
1476 | ||
1477 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
ace4b8d7 | 1478 | (ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), &objfile->symbol_obstack); |
e38e0312 JG |
1479 | |
1480 | ||
a81ce07d JK |
1481 | static struct type *func_symbol_type; |
1482 | static struct type *var_symbol_type; | |
1483 | ||
e38e0312 JG |
1484 | /* process one xcoff symbol. */ |
1485 | ||
1486 | static struct symbol * | |
1ab3bf1b | 1487 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1488 | register struct coff_symbol *cs; |
1ab3bf1b | 1489 | struct objfile *objfile; |
e38e0312 JG |
1490 | { |
1491 | struct symbol onesymbol; | |
1492 | register struct symbol *sym = &onesymbol; | |
1493 | struct symbol *sym2 = NULL; | |
df1e1074 | 1494 | char *name, *pp; |
e38e0312 | 1495 | |
a367db89 JK |
1496 | int sec; |
1497 | CORE_ADDR off; | |
1498 | ||
1499 | if (cs->c_secnum < 0) | |
1500 | { | |
1501 | /* The value is a register number, offset within a frame, etc., | |
1502 | and does not get relocated. */ | |
1503 | off = 0; | |
1504 | sec = -1; | |
1505 | } | |
1506 | else | |
1507 | { | |
1508 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1509 | off = ANOFFSET (objfile->section_offsets, sec); | |
1510 | } | |
1511 | ||
e38e0312 JG |
1512 | name = cs->c_name; |
1513 | if (name[0] == '.') | |
1514 | ++name; | |
1515 | ||
4ed97c9a | 1516 | memset (sym, '\0', sizeof (struct symbol)); |
e38e0312 JG |
1517 | |
1518 | /* default assumptions */ | |
a367db89 | 1519 | SYMBOL_VALUE (sym) = cs->c_value + off; |
e38e0312 | 1520 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
a367db89 | 1521 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
e38e0312 | 1522 | |
a81ce07d JK |
1523 | if (ISFCN (cs->c_type)) |
1524 | { | |
1525 | /* At this point, we don't know the type of the function. This | |
1526 | will be patched with the type from its stab entry later on in | |
1527 | patch_block_stabs (), unless the file was compiled without -g. */ | |
e38e0312 | 1528 | |
a81ce07d JK |
1529 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); |
1530 | SYMBOL_TYPE (sym) = func_symbol_type; | |
e38e0312 | 1531 | |
a81ce07d JK |
1532 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1533 | SYMBOL_DUP (sym, sym2); | |
e38e0312 | 1534 | |
a81ce07d JK |
1535 | if (cs->c_sclass == C_EXT) |
1536 | add_symbol_to_list (sym2, &global_symbols); | |
1537 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1538 | add_symbol_to_list (sym2, &file_symbols); | |
1539 | } | |
1540 | else | |
e38e0312 | 1541 | { |
a81ce07d JK |
1542 | /* In case we can't figure out the type, provide default. */ |
1543 | SYMBOL_TYPE (sym) = var_symbol_type; | |
1544 | ||
1545 | switch (cs->c_sclass) | |
1546 | { | |
818de002 | 1547 | #if 0 |
df1e1074 PS |
1548 | /* The values of functions and global symbols are now resolved |
1549 | via the global_sym_chain in stabsread.c. */ | |
a81ce07d JK |
1550 | case C_FUN: |
1551 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1552 | add_stab_to_list (name, &global_stabs); | |
1553 | else | |
1554 | add_stab_to_list (name, &file_stabs); | |
1555 | break; | |
e38e0312 | 1556 | |
a81ce07d JK |
1557 | case C_GSYM: |
1558 | add_stab_to_list (name, &global_stabs); | |
1559 | break; | |
df1e1074 | 1560 | #endif |
e38e0312 | 1561 | |
a81ce07d JK |
1562 | case C_BCOMM: |
1563 | common_block_start (cs->c_name, objfile); | |
1564 | break; | |
9438d642 | 1565 | |
a81ce07d JK |
1566 | case C_ECOMM: |
1567 | common_block_end (objfile); | |
1568 | break; | |
9438d642 | 1569 | |
a81ce07d JK |
1570 | default: |
1571 | complain (&storclass_complaint, cs->c_sclass); | |
1572 | /* FALLTHROUGH */ | |
9438d642 | 1573 | |
a81ce07d JK |
1574 | case C_DECL: |
1575 | case C_PSYM: | |
1576 | case C_RPSYM: | |
1577 | case C_ECOML: | |
a367db89 JK |
1578 | case C_LSYM: |
1579 | case C_RSYM: | |
df1e1074 | 1580 | case C_GSYM: |
1eeba686 | 1581 | |
a367db89 JK |
1582 | { |
1583 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1584 | if (sym != NULL) | |
1585 | { | |
1586 | SYMBOL_SECTION (sym) = sec; | |
1587 | } | |
1588 | return sym; | |
1589 | } | |
e38e0312 | 1590 | |
a81ce07d | 1591 | case C_STSYM: |
1eeba686 | 1592 | |
a81ce07d JK |
1593 | /* For xlc (not GCC), the 'V' symbol descriptor is used for |
1594 | all statics and we need to distinguish file-scope versus | |
1595 | function-scope using within_function. We do this by | |
1596 | changing the string we pass to define_symbol to use 'S' | |
1597 | where we need to, which is not necessarily super-clean, | |
1598 | but seems workable enough. */ | |
91cc45da | 1599 | |
a81ce07d JK |
1600 | if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL) |
1601 | return NULL; | |
91cc45da | 1602 | |
a81ce07d JK |
1603 | ++pp; |
1604 | if (*pp == 'V' && !within_function) | |
1605 | *pp = 'S'; | |
a367db89 JK |
1606 | sym = define_symbol ((cs->c_value |
1607 | + ANOFFSET (objfile->section_offsets, | |
1608 | static_block_section)), | |
1609 | cs->c_name, 0, 0, objfile); | |
a81ce07d JK |
1610 | if (sym != NULL) |
1611 | { | |
1612 | SYMBOL_VALUE (sym) += static_block_base; | |
1613 | SYMBOL_SECTION (sym) = static_block_section; | |
1614 | } | |
1615 | return sym; | |
e38e0312 | 1616 | |
1eeba686 | 1617 | } |
e38e0312 | 1618 | } |
e38e0312 JG |
1619 | return sym2; |
1620 | } | |
1621 | ||
e8abe489 PS |
1622 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1623 | only the last component of the name. Result is in static storage and | |
1624 | is only good for temporary use. */ | |
1625 | ||
1626 | static char * | |
a367db89 JK |
1627 | coff_getfilename (aux_entry, objfile) |
1628 | union internal_auxent *aux_entry; | |
1629 | struct objfile *objfile; | |
e8abe489 PS |
1630 | { |
1631 | static char buffer[BUFSIZ]; | |
1632 | register char *temp; | |
1633 | char *result; | |
1634 | ||
1635 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
a367db89 JK |
1636 | strcpy (buffer, |
1637 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl | |
1638 | + aux_entry->x_file.x_n.x_offset); | |
e8abe489 PS |
1639 | else |
1640 | { | |
1641 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1642 | buffer[FILNMLEN] = '\0'; | |
1643 | } | |
1644 | result = buffer; | |
1645 | ||
1646 | /* FIXME: We should not be throwing away the information about what | |
1647 | directory. It should go into dirname of the symtab, or some such | |
1648 | place. */ | |
1649 | if ((temp = strrchr (result, '/')) != NULL) | |
1650 | result = temp + 1; | |
1651 | return (result); | |
1652 | } | |
1653 | ||
3c02636b JK |
1654 | /* Set *SYMBOL to symbol number symno in symtbl. */ |
1655 | static void | |
1656 | read_symbol (symbol, symno) | |
1657 | struct internal_syment *symbol; | |
e38e0312 JG |
1658 | int symno; |
1659 | { | |
a367db89 JK |
1660 | int nsyms = |
1661 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1662 | ->symtbl_num_syms; | |
1663 | char *stbl = | |
1664 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1665 | ->symtbl; | |
1666 | if (symno < 0 || symno >= nsyms) | |
c84a96d7 | 1667 | { |
b646b438 | 1668 | static struct complaint msg = |
c84a96d7 JK |
1669 | {"Invalid symbol offset", 0, 0}; |
1670 | complain (&msg); | |
3c02636b JK |
1671 | symbol->n_value = 0; |
1672 | symbol->n_scnum = -1; | |
1673 | return; | |
c84a96d7 | 1674 | } |
a367db89 JK |
1675 | bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd, |
1676 | stbl + (symno*local_symesz), | |
1677 | symbol); | |
3c02636b JK |
1678 | } |
1679 | ||
1680 | /* Get value corresponding to symbol number symno in symtbl. */ | |
1681 | ||
1682 | static int | |
1683 | read_symbol_nvalue (symno) | |
1684 | int symno; | |
1685 | { | |
1686 | struct internal_syment symbol[1]; | |
1687 | ||
1688 | read_symbol (symbol, symno); | |
e38e0312 JG |
1689 | return symbol->n_value; |
1690 | } | |
1691 | ||
1692 | ||
c84a96d7 JK |
1693 | /* Find the address of the function corresponding to symno, where |
1694 | symno is the symbol pointed to by the linetable. */ | |
1695 | ||
e38e0312 | 1696 | static int |
c84a96d7 | 1697 | read_symbol_lineno (symno) |
a367db89 | 1698 | int symno; |
e38e0312 | 1699 | { |
a367db89 JK |
1700 | int nsyms = |
1701 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1702 | ->symtbl_num_syms; | |
1703 | char *stbl = | |
1704 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1705 | ->symtbl; | |
e38e0312 JG |
1706 | struct internal_syment symbol[1]; |
1707 | union internal_auxent main_aux[1]; | |
1708 | ||
a367db89 JK |
1709 | if (symno < 0) |
1710 | { | |
1711 | complain (&bf_notfound_complaint); | |
1712 | return 0; | |
1713 | } | |
1714 | ||
c84a96d7 JK |
1715 | /* Note that just searching for a short distance (e.g. 50 symbols) |
1716 | is not enough, at least in the following case. | |
1717 | ||
1718 | .extern foo | |
1719 | [many .stabx entries] | |
1720 | [a few functions, referring to foo] | |
1721 | .globl foo | |
1722 | .bf | |
e38e0312 | 1723 | |
c84a96d7 JK |
1724 | What happens here is that the assembler moves the .stabx entries |
1725 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1726 | all the stabx entries. See PR gdb/2222. */ | |
a367db89 JK |
1727 | |
1728 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1729 | If I understand things correctly it would need to be done only for | |
1730 | the duration of a single psymtab to symtab conversion. */ | |
1731 | while (symno < nsyms) | |
1732 | { | |
1733 | bfd_coff_swap_sym_in (symfile_bfd, | |
1734 | stbl + (symno * local_symesz), symbol); | |
1735 | if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf")) | |
1736 | goto gotit; | |
1737 | symno += symbol->n_numaux + 1; | |
1738 | } | |
e38e0312 | 1739 | |
e9916390 | 1740 | complain (&bf_notfound_complaint); |
e38e0312 JG |
1741 | return 0; |
1742 | ||
1743 | gotit: | |
1744 | /* take aux entry and return its lineno */ | |
1745 | symno++; | |
a367db89 JK |
1746 | bfd_coff_swap_aux_in (this_symtab_psymtab->objfile->obfd, |
1747 | stbl + symno * local_symesz, | |
bf8d9d28 ILT |
1748 | symbol->n_type, symbol->n_sclass, |
1749 | 0, symbol->n_numaux, main_aux); | |
e38e0312 JG |
1750 | |
1751 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1752 | } | |
1753 | ||
1754 | /* Support for line number handling */ | |
1755 | ||
1756 | /* This function is called for every section; it finds the outer limits | |
1757 | * of the line table (minimum and maximum file offset) so that the | |
1758 | * mainline code can read the whole thing for efficiency. | |
1759 | */ | |
1760 | static void | |
a367db89 JK |
1761 | find_linenos (abfd, asect, vpinfo) |
1762 | bfd *abfd; | |
1763 | sec_ptr asect; | |
1764 | PTR vpinfo; | |
e38e0312 JG |
1765 | { |
1766 | struct coff_symfile_info *info; | |
1767 | int size, count; | |
1768 | file_ptr offset, maxoff; | |
1769 | ||
1770 | count = asect->lineno_count; | |
1771 | ||
2e4964ad | 1772 | if (!STREQ (asect->name, ".text") || count == 0) |
e38e0312 JG |
1773 | return; |
1774 | ||
a367db89 JK |
1775 | size = count * coff_data (abfd)->local_linesz; |
1776 | info = (struct coff_symfile_info *)vpinfo; | |
e38e0312 JG |
1777 | offset = asect->line_filepos; |
1778 | maxoff = offset + size; | |
1779 | ||
1780 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1781 | info->min_lineno_offset = offset; | |
1782 | ||
1783 | if (maxoff > info->max_lineno_offset) | |
1784 | info->max_lineno_offset = maxoff; | |
1785 | } | |
a367db89 JK |
1786 | \f |
1787 | static void xcoff_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); | |
e38e0312 | 1788 | |
a367db89 JK |
1789 | static void |
1790 | xcoff_psymtab_to_symtab_1 (pst) | |
1791 | struct partial_symtab *pst; | |
e38e0312 | 1792 | { |
a367db89 JK |
1793 | struct cleanup *old_chain; |
1794 | int i; | |
1795 | ||
1796 | if (!pst) | |
1797 | return; | |
1798 | ||
1799 | if (pst->readin) | |
1800 | { | |
1801 | fprintf_unfiltered | |
1802 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1803 | pst->filename); | |
1804 | return; | |
1805 | } | |
e38e0312 | 1806 | |
a367db89 JK |
1807 | /* Read in all partial symtabs on which this one is dependent */ |
1808 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1809 | if (!pst->dependencies[i]->readin) | |
1810 | { | |
1811 | /* Inform about additional files that need to be read in. */ | |
1812 | if (info_verbose) | |
1813 | { | |
1814 | fputs_filtered (" ", gdb_stdout); | |
1815 | wrap_here (""); | |
1816 | fputs_filtered ("and ", gdb_stdout); | |
1817 | wrap_here (""); | |
1818 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1819 | wrap_here (""); /* Flush output */ | |
1820 | gdb_flush (gdb_stdout); | |
1821 | } | |
1822 | xcoff_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1823 | } | |
0eb22669 | 1824 | |
a367db89 JK |
1825 | if (((struct symloc *)pst->read_symtab_private)->numsyms != 0) |
1826 | { | |
1827 | /* Init stuff necessary for reading in symbols. */ | |
1828 | stabsread_init (); | |
1829 | buildsym_init (); | |
1830 | old_chain = make_cleanup (really_free_pendings, 0); | |
e38e0312 | 1831 | |
a367db89 JK |
1832 | read_xcoff_symtab (pst); |
1833 | sort_symtab_syms (pst->symtab); | |
e38e0312 | 1834 | |
a367db89 JK |
1835 | do_cleanups (old_chain); |
1836 | } | |
e38e0312 | 1837 | |
a367db89 | 1838 | pst->readin = 1; |
e38e0312 | 1839 | } |
0eb22669 | 1840 | |
a367db89 JK |
1841 | static void xcoff_psymtab_to_symtab PARAMS ((struct partial_symtab *)); |
1842 | ||
1843 | /* Read in all of the symbols for a given psymtab for real. | |
1844 | Be verbose about it if the user wants that. */ | |
1845 | ||
0eb22669 | 1846 | static void |
a367db89 JK |
1847 | xcoff_psymtab_to_symtab (pst) |
1848 | struct partial_symtab *pst; | |
0eb22669 | 1849 | { |
a367db89 JK |
1850 | bfd *sym_bfd; |
1851 | ||
1852 | if (!pst) | |
1853 | return; | |
1854 | ||
1855 | if (pst->readin) | |
1856 | { | |
1857 | fprintf_unfiltered | |
1858 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1859 | pst->filename); | |
1860 | return; | |
1861 | } | |
1862 | ||
1863 | if (((struct symloc *)pst->read_symtab_private)->numsyms != 0 | |
1864 | || pst->number_of_dependencies) | |
1865 | { | |
1866 | /* Print the message now, before reading the string table, | |
1867 | to avoid disconcerting pauses. */ | |
1868 | if (info_verbose) | |
1869 | { | |
1870 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1871 | gdb_flush (gdb_stdout); | |
1872 | } | |
1873 | ||
1874 | sym_bfd = pst->objfile->obfd; | |
1875 | ||
1876 | next_symbol_text_func = xcoff_next_symbol_text; | |
1877 | ||
1878 | xcoff_psymtab_to_symtab_1 (pst); | |
1879 | ||
1880 | /* Match with global symbols. This only needs to be done once, | |
1881 | after all of the symtabs and dependencies have been read in. */ | |
1882 | scan_file_globals (pst->objfile); | |
1883 | ||
1884 | /* Finish up the debug error message. */ | |
1885 | if (info_verbose) | |
1886 | printf_filtered ("done.\n"); | |
1887 | } | |
1888 | } | |
93fe4e33 | 1889 | \f |
1ab3bf1b | 1890 | static void |
9b280a7f | 1891 | xcoff_new_init (objfile) |
80d68b1d | 1892 | struct objfile *objfile; |
e38e0312 | 1893 | { |
df1e1074 PS |
1894 | stabsread_new_init (); |
1895 | buildsym_new_init (); | |
e38e0312 JG |
1896 | } |
1897 | ||
a367db89 | 1898 | /* Do initialization in preparation for reading symbols from OBJFILE. |
dd469789 JG |
1899 | |
1900 | We will only be called if this is an XCOFF or XCOFF-like file. | |
1901 | BFD handles figuring out the format of the file, and code in symfile.c | |
a367db89 | 1902 | uses BFD's determination to vector to us. */ |
dd469789 | 1903 | |
1ab3bf1b | 1904 | static void |
9b280a7f | 1905 | xcoff_symfile_init (objfile) |
a367db89 | 1906 | struct objfile *objfile; |
e38e0312 | 1907 | { |
e38e0312 | 1908 | /* Allocate struct to keep track of the symfile */ |
80d68b1d FF |
1909 | objfile -> sym_private = xmmalloc (objfile -> md, |
1910 | sizeof (struct coff_symfile_info)); | |
436d4143 JL |
1911 | |
1912 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1913 | find this causes a significant slowdown in gdb then we could | |
1914 | set it in the debug symbol readers only when necessary. */ | |
1915 | objfile->flags |= OBJF_REORDERED; | |
1916 | ||
5e2e79f8 | 1917 | init_entry_point_info (objfile); |
e38e0312 JG |
1918 | } |
1919 | ||
80d68b1d FF |
1920 | /* Perform any local cleanups required when we are done with a particular |
1921 | objfile. I.E, we are in the process of discarding all symbol information | |
1922 | for an objfile, freeing up all memory held for it, and unlinking the | |
1923 | objfile struct from the global list of known objfiles. */ | |
1924 | ||
1925 | static void | |
9b280a7f | 1926 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
1927 | struct objfile *objfile; |
1928 | { | |
1929 | if (objfile -> sym_private != NULL) | |
1930 | { | |
1931 | mfree (objfile -> md, objfile -> sym_private); | |
1932 | } | |
1933 | ||
a367db89 | 1934 | /* Start with a fresh include table for the next objfile. */ |
80d68b1d FF |
1935 | if (inclTable) |
1936 | { | |
1937 | free (inclTable); | |
1938 | inclTable = NULL; | |
1939 | } | |
1940 | inclIndx = inclLength = inclDepth = 0; | |
1941 | } | |
1942 | ||
e38e0312 | 1943 | |
a367db89 JK |
1944 | static void |
1945 | init_stringtab (abfd, offset, objfile) | |
e38e0312 | 1946 | bfd *abfd; |
d5931d79 | 1947 | file_ptr offset; |
1ab3bf1b | 1948 | struct objfile *objfile; |
e38e0312 JG |
1949 | { |
1950 | long length; | |
1951 | int val; | |
1952 | unsigned char lengthbuf[4]; | |
a367db89 | 1953 | char *strtbl; |
e38e0312 | 1954 | |
a367db89 | 1955 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl = NULL; |
e38e0312 | 1956 | |
987622b5 | 1957 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) |
a367db89 JK |
1958 | error ("cannot seek to string table in %s: %s", |
1959 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1960 | ||
1961 | val = bfd_read ((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
1962 | length = bfd_h_get_32 (abfd, lengthbuf); | |
e38e0312 JG |
1963 | |
1964 | /* If no string table is needed, then the file may end immediately | |
a367db89 | 1965 | after the symbols. Just return with `strtbl' set to NULL. */ |
e38e0312 | 1966 | |
a367db89 JK |
1967 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1968 | return; | |
e38e0312 JG |
1969 | |
1970 | /* Allocate string table from symbol_obstack. We will need this table | |
1971 | as long as we have its symbol table around. */ | |
1972 | ||
a367db89 JK |
1973 | strtbl = (char *) obstack_alloc (&objfile->symbol_obstack, length); |
1974 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl = strtbl; | |
e38e0312 | 1975 | |
df1e1074 PS |
1976 | /* Copy length buffer, the first byte is usually zero and is |
1977 | used for stabs with a name length of zero. */ | |
1978 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
a367db89 JK |
1979 | if (length == sizeof lengthbuf) |
1980 | return; | |
e38e0312 | 1981 | |
a367db89 JK |
1982 | val = bfd_read (strtbl + sizeof lengthbuf, 1, length - sizeof lengthbuf, |
1983 | abfd); | |
e38e0312 | 1984 | |
a367db89 JK |
1985 | if (val != length - sizeof lengthbuf) |
1986 | error ("cannot read string table from %s: %s", | |
1987 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1988 | if (strtbl[length - 1] != '\0') | |
1989 | error ("bad symbol file: string table does not end with null character"); | |
e38e0312 | 1990 | |
a367db89 | 1991 | return; |
e38e0312 | 1992 | } |
a367db89 JK |
1993 | \f |
1994 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1995 | have seen one, it is the offset in the line numbers of the line numbers | |
1996 | for the psymtab. */ | |
1997 | static unsigned int first_fun_line_offset; | |
e38e0312 | 1998 | |
a367db89 JK |
1999 | static struct partial_symtab *xcoff_start_psymtab |
2000 | PARAMS ((struct objfile *, struct section_offsets *, char *, int, | |
2ad5709f | 2001 | struct partial_symbol **, struct partial_symbol **)); |
a367db89 JK |
2002 | |
2003 | /* Allocate and partially fill a partial symtab. It will be | |
2004 | completely filled at the end of the symbol list. | |
2005 | ||
2006 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2007 | is the address relative to which its symbols are (incremental) or 0 | |
2008 | (normal). */ | |
2009 | ||
2010 | static struct partial_symtab * | |
2011 | xcoff_start_psymtab (objfile, section_offsets, | |
2012 | filename, first_symnum, global_syms, static_syms) | |
2013 | struct objfile *objfile; | |
2014 | struct section_offsets *section_offsets; | |
2015 | char *filename; | |
2016 | int first_symnum; | |
2ad5709f FF |
2017 | struct partial_symbol **global_syms; |
2018 | struct partial_symbol **static_syms; | |
e38e0312 | 2019 | { |
a367db89 JK |
2020 | struct partial_symtab *result = |
2021 | start_psymtab_common (objfile, section_offsets, | |
2022 | filename, | |
2023 | /* We fill in textlow later. */ | |
2024 | 0, | |
2025 | global_syms, static_syms); | |
2026 | ||
2027 | result->read_symtab_private = (char *) | |
2028 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
2029 | ((struct symloc *)result->read_symtab_private)->first_symnum = first_symnum; | |
2030 | result->read_symtab = xcoff_psymtab_to_symtab; | |
2031 | ||
2032 | /* Deduce the source language from the filename for this psymtab. */ | |
2033 | psymtab_language = deduce_language_from_filename (filename); | |
2034 | ||
2035 | return result; | |
2036 | } | |
e38e0312 | 2037 | |
a367db89 JK |
2038 | static struct partial_symtab *xcoff_end_psymtab |
2039 | PARAMS ((struct partial_symtab *, char **, int, int, | |
68aadb90 | 2040 | struct partial_symtab **, int, int)); |
e38e0312 | 2041 | |
a367db89 JK |
2042 | /* Close off the current usage of PST. |
2043 | Returns PST, or NULL if the partial symtab was empty and thrown away. | |
e38e0312 | 2044 | |
a367db89 | 2045 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). |
e38e0312 | 2046 | |
a367db89 JK |
2047 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES |
2048 | are the information for includes and dependencies. */ | |
e38e0312 | 2049 | |
a367db89 JK |
2050 | static struct partial_symtab * |
2051 | xcoff_end_psymtab (pst, include_list, num_includes, capping_symbol_number, | |
68aadb90 | 2052 | dependency_list, number_dependencies, textlow_not_set) |
a367db89 JK |
2053 | struct partial_symtab *pst; |
2054 | char **include_list; | |
2055 | int num_includes; | |
2056 | int capping_symbol_number; | |
2057 | struct partial_symtab **dependency_list; | |
2058 | int number_dependencies; | |
68aadb90 | 2059 | int textlow_not_set; |
a367db89 JK |
2060 | { |
2061 | int i; | |
2062 | struct objfile *objfile = pst -> objfile; | |
2063 | ||
2064 | if (capping_symbol_number != -1) | |
2065 | ((struct symloc *)pst->read_symtab_private)->numsyms = | |
2066 | capping_symbol_number | |
2067 | - ((struct symloc *)pst->read_symtab_private)->first_symnum; | |
2068 | ((struct symloc *)pst->read_symtab_private)->lineno_off = | |
2069 | first_fun_line_offset; | |
2070 | first_fun_line_offset = 0; | |
2071 | pst->n_global_syms = | |
2072 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2073 | pst->n_static_syms = | |
2074 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2075 | ||
2076 | pst->number_of_dependencies = number_dependencies; | |
2077 | if (number_dependencies) | |
2078 | { | |
2079 | pst->dependencies = (struct partial_symtab **) | |
2080 | obstack_alloc (&objfile->psymbol_obstack, | |
2081 | number_dependencies * sizeof (struct partial_symtab *)); | |
2082 | memcpy (pst->dependencies, dependency_list, | |
2083 | number_dependencies * sizeof (struct partial_symtab *)); | |
2084 | } | |
2085 | else | |
2086 | pst->dependencies = 0; | |
2087 | ||
2088 | for (i = 0; i < num_includes; i++) | |
2089 | { | |
2090 | struct partial_symtab *subpst = | |
2091 | allocate_psymtab (include_list[i], objfile); | |
2092 | ||
2093 | subpst->section_offsets = pst->section_offsets; | |
2094 | subpst->read_symtab_private = | |
2095 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
2096 | sizeof (struct symloc)); | |
2097 | ((struct symloc *)subpst->read_symtab_private)->first_symnum = 0; | |
2098 | ((struct symloc *)subpst->read_symtab_private)->numsyms = 0; | |
2099 | subpst->textlow = 0; | |
2100 | subpst->texthigh = 0; | |
2101 | ||
2102 | /* We could save slight bits of space by only making one of these, | |
2103 | shared by the entire set of include files. FIXME-someday. */ | |
2104 | subpst->dependencies = (struct partial_symtab **) | |
2105 | obstack_alloc (&objfile->psymbol_obstack, | |
2106 | sizeof (struct partial_symtab *)); | |
2107 | subpst->dependencies[0] = pst; | |
2108 | subpst->number_of_dependencies = 1; | |
2109 | ||
2110 | subpst->globals_offset = | |
2111 | subpst->n_global_syms = | |
2112 | subpst->statics_offset = | |
2113 | subpst->n_static_syms = 0; | |
2114 | ||
2115 | subpst->readin = 0; | |
2116 | subpst->symtab = 0; | |
2117 | subpst->read_symtab = pst->read_symtab; | |
2118 | } | |
2119 | ||
2120 | sort_pst_symbols (pst); | |
2121 | ||
2122 | /* If there is already a psymtab or symtab for a file of this name, | |
2123 | remove it. (If there is a symtab, more drastic things also | |
2124 | happen.) This happens in VxWorks. */ | |
2125 | free_named_symtabs (pst->filename); | |
2126 | ||
2127 | if (num_includes == 0 | |
2128 | && number_dependencies == 0 | |
2129 | && pst->n_global_syms == 0 | |
2130 | && pst->n_static_syms == 0) | |
2131 | { | |
2132 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
2133 | it is on the obstack, but we can forget to chain it on the list. */ | |
2134 | /* Empty psymtabs happen as a result of header files which don't have | |
df1e1074 | 2135 | any symbols in them. There can be a lot of them. */ |
a367db89 JK |
2136 | struct partial_symtab *prev_pst; |
2137 | ||
2138 | /* First, snip it out of the psymtab chain */ | |
2139 | ||
2140 | if (pst->objfile->psymtabs == pst) | |
2141 | pst->objfile->psymtabs = pst->next; | |
2142 | else | |
2143 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
2144 | if (prev_pst->next == pst) | |
2145 | prev_pst->next = pst->next; | |
2146 | ||
2147 | /* Next, put it on a free list for recycling */ | |
2148 | ||
2149 | pst->next = pst->objfile->free_psymtabs; | |
2150 | pst->objfile->free_psymtabs = pst; | |
2151 | ||
2152 | /* Indicate that psymtab was thrown away. */ | |
2153 | pst = (struct partial_symtab *)NULL; | |
2154 | } | |
2155 | return pst; | |
2156 | } | |
2157 | ||
2158 | static void swap_sym PARAMS ((struct internal_syment *, | |
2159 | union internal_auxent *, char **, char **, | |
2160 | unsigned int *, | |
2161 | struct objfile *)); | |
2162 | ||
2163 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in | |
2164 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2165 | the symbol and its auxents. */ | |
2166 | ||
2167 | static void | |
2168 | swap_sym (symbol, aux, name, raw, symnump, objfile) | |
2169 | struct internal_syment *symbol; | |
2170 | union internal_auxent *aux; | |
2171 | char **name; | |
2172 | char **raw; | |
2173 | unsigned int *symnump; | |
2174 | struct objfile *objfile; | |
2175 | { | |
2176 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2177 | if (symbol->n_zeroes) | |
2178 | { | |
2179 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
2180 | '\0'-terminated. */ | |
2181 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') | |
2182 | { | |
2183 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2184 | into the minimal symbols. */ | |
2185 | char *p; | |
2186 | p = obstack_alloc (&objfile->psymbol_obstack, E_SYMNMLEN + 1); | |
2187 | strncpy (p, symbol->n_name, E_SYMNMLEN); | |
2188 | p[E_SYMNMLEN] = '\0'; | |
2189 | *name = p; | |
2190 | } | |
2191 | else | |
2192 | /* Point to the unswapped name as that persists as long as the | |
2193 | objfile does. */ | |
2194 | *name = ((struct external_syment *)*raw)->e.e_name; | |
2195 | } | |
2196 | else if (symbol->n_sclass & 0x80) | |
2197 | { | |
2198 | *name = ((struct coff_symfile_info *)objfile->sym_private)->debugsec | |
2199 | + symbol->n_offset; | |
2200 | } | |
2201 | else | |
2202 | { | |
2203 | *name = ((struct coff_symfile_info *)objfile->sym_private)->strtbl | |
2204 | + symbol->n_offset; | |
2205 | } | |
2206 | ++*symnump; | |
2207 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2208 | if (symbol->n_numaux > 0) | |
2209 | { | |
2210 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2211 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2212 | ||
2213 | *symnump += symbol->n_numaux; | |
2214 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2215 | } | |
e38e0312 JG |
2216 | } |
2217 | ||
2218 | static void | |
a367db89 JK |
2219 | scan_xcoff_symtab (section_offsets, objfile) |
2220 | struct section_offsets *section_offsets; | |
2221 | struct objfile *objfile; | |
e38e0312 | 2222 | { |
211b564e | 2223 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
df1e1074 | 2224 | char *filestring = NULL; |
a367db89 JK |
2225 | |
2226 | char *namestring; | |
a367db89 | 2227 | int past_first_source_file = 0; |
a367db89 | 2228 | bfd *abfd; |
211b564e | 2229 | asection *bfd_sect; |
a367db89 JK |
2230 | unsigned int nsyms; |
2231 | ||
2232 | /* Current partial symtab */ | |
2233 | struct partial_symtab *pst; | |
2234 | ||
2235 | /* List of current psymtab's include files */ | |
2236 | char **psymtab_include_list; | |
2237 | int includes_allocated; | |
2238 | int includes_used; | |
2239 | ||
2240 | /* Index within current psymtab dependency list */ | |
2241 | struct partial_symtab **dependency_list; | |
2242 | int dependencies_used, dependencies_allocated; | |
2243 | ||
2244 | char *sraw_symbol; | |
2245 | struct internal_syment symbol; | |
2246 | union internal_auxent main_aux; | |
2247 | unsigned int ssymnum; | |
2248 | ||
2249 | char *last_csect_name = NULL; /* last seen csect's name and value */ | |
df1e1074 PS |
2250 | CORE_ADDR last_csect_val = 0; |
2251 | int last_csect_sec = 0; | |
2252 | int misc_func_recorded = 0; /* true if any misc. function */ | |
3a179be1 | 2253 | int textlow_not_set = 1; |
a367db89 JK |
2254 | |
2255 | pst = (struct partial_symtab *) 0; | |
2256 | ||
2257 | includes_allocated = 30; | |
2258 | includes_used = 0; | |
2259 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2260 | sizeof (char *)); | |
2261 | ||
2262 | dependencies_allocated = 30; | |
2263 | dependencies_used = 0; | |
2264 | dependency_list = | |
2265 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2266 | sizeof (struct partial_symtab *)); | |
2267 | ||
2268 | last_source_file = NULL; | |
2269 | ||
2270 | abfd = objfile->obfd; | |
2271 | ||
2272 | sraw_symbol = ((struct coff_symfile_info *)objfile->sym_private)->symtbl; | |
2273 | nsyms = ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms; | |
2274 | ssymnum = 0; | |
2275 | while (ssymnum < nsyms) | |
2276 | { | |
df1e1074 | 2277 | int sclass = ((struct external_syment *)sraw_symbol)->e_sclass[0] & 0xff; |
a367db89 JK |
2278 | /* This is the type we pass to partial-stab.h. A less kludgy solution |
2279 | would be to break out partial-stab.h into its various parts--shuffle | |
2280 | off the DBXREAD_ONLY stuff to dbxread.c, and make separate | |
2281 | pstab-norm.h (for most types), pstab-sol.h (for N_SOL), etc. */ | |
2282 | int stype; | |
2283 | ||
2284 | QUIT; | |
2285 | ||
2286 | switch (sclass) | |
2287 | { | |
2288 | case C_EXT: | |
2289 | case C_HIDEXT: | |
2290 | { | |
2291 | /* The CSECT auxent--always the last auxent. */ | |
2292 | union internal_auxent csect_aux; | |
2293 | unsigned int symnum_before = ssymnum; | |
2294 | ||
2295 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2296 | &ssymnum, objfile); | |
2297 | if (symbol.n_numaux > 1) | |
2298 | { | |
2299 | bfd_coff_swap_aux_in | |
2300 | (objfile->obfd, | |
2301 | sraw_symbol - coff_data(abfd)->local_symesz, | |
2302 | symbol.n_type, | |
2303 | symbol.n_sclass, | |
2304 | symbol.n_numaux - 1, | |
2305 | symbol.n_numaux, | |
2306 | &csect_aux); | |
2307 | } | |
2308 | else | |
2309 | csect_aux = main_aux; | |
2310 | ||
df1e1074 PS |
2311 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2312 | if (namestring[0] == '$' | |
2313 | || (namestring[0] == '.' && namestring[1] == '$')) | |
2314 | break; | |
2315 | ||
a367db89 JK |
2316 | switch (csect_aux.x_csect.x_smtyp & 0x7) |
2317 | { | |
2318 | case XTY_SD: | |
2319 | switch (csect_aux.x_csect.x_smclas) | |
2320 | { | |
2321 | case XMC_PR: | |
2322 | if (last_csect_name) | |
2323 | { | |
2324 | /* If no misc. function recorded in the last | |
2325 | seen csect, enter it as a function. This | |
2326 | will take care of functions like strcmp() | |
2327 | compiled by xlc. */ | |
2328 | ||
2329 | if (!misc_func_recorded) | |
2330 | { | |
2331 | RECORD_MINIMAL_SYMBOL | |
2332 | (last_csect_name, last_csect_val, | |
2333 | mst_text, last_csect_sec, | |
2334 | objfile); | |
2335 | } | |
2336 | ||
2337 | if (pst != NULL) | |
2338 | { | |
2339 | /* We have to allocate one psymtab for | |
2340 | each program csect, because their text | |
2341 | sections need not be adjacent. */ | |
2342 | xcoff_end_psymtab | |
68aadb90 FF |
2343 | (pst, psymtab_include_list, includes_used, |
2344 | symnum_before, dependency_list, | |
2345 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2346 | includes_used = 0; |
2347 | dependencies_used = 0; | |
2348 | /* Give all psymtabs for this source file the same | |
2349 | name. */ | |
2350 | pst = xcoff_start_psymtab | |
2351 | (objfile, section_offsets, | |
2352 | filestring, | |
2353 | symnum_before, | |
2354 | objfile->global_psymbols.next, | |
2355 | objfile->static_psymbols.next); | |
2356 | } | |
2357 | } | |
2358 | if (namestring && namestring[0] == '.') | |
2359 | { | |
2360 | last_csect_name = namestring; | |
2361 | last_csect_val = symbol.n_value; | |
2362 | last_csect_sec = | |
2363 | secnum_to_section (symbol.n_scnum, objfile); | |
2364 | } | |
2365 | if (pst != NULL) | |
2366 | { | |
2367 | CORE_ADDR highval = | |
2368 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; | |
2369 | if (highval > pst->texthigh) | |
2370 | pst->texthigh = highval; | |
2371 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2372 | pst->textlow = symbol.n_value; | |
2373 | } | |
2374 | misc_func_recorded = 0; | |
2375 | break; | |
df1e1074 | 2376 | |
a367db89 | 2377 | case XMC_RW: |
df1e1074 PS |
2378 | /* Data variables are recorded in the minimal symbol |
2379 | table, except for section symbols. */ | |
2380 | if (*namestring != '.') | |
2381 | prim_record_minimal_symbol_and_info | |
2382 | (namestring, symbol.n_value, | |
2383 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2384 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2385 | NULL, objfile); |
a367db89 | 2386 | break; |
df1e1074 | 2387 | |
a367db89 JK |
2388 | case XMC_TC0: |
2389 | if (toc_offset) | |
2390 | warning ("More than one XMC_TC0 symbol found."); | |
2391 | toc_offset = symbol.n_value; | |
211b564e PS |
2392 | |
2393 | /* Make TOC offset relative to start address of section. */ | |
2394 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); | |
2395 | if (bfd_sect) | |
2396 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
a367db89 | 2397 | break; |
df1e1074 | 2398 | |
a367db89 JK |
2399 | case XMC_TC: |
2400 | /* These symbols tell us where the TOC entry for a | |
2401 | variable is, not the variable itself. */ | |
2402 | break; | |
df1e1074 | 2403 | |
a367db89 JK |
2404 | default: |
2405 | break; | |
2406 | } | |
2407 | break; | |
2408 | ||
2409 | case XTY_LD: | |
2410 | switch (csect_aux.x_csect.x_smclas) | |
2411 | { | |
2412 | case XMC_PR: | |
df1e1074 PS |
2413 | /* A function entry point. */ |
2414 | ||
2415 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2416 | first_fun_line_offset = | |
2417 | main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
2418 | RECORD_MINIMAL_SYMBOL | |
2419 | (namestring, symbol.n_value, | |
2420 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2421 | secnum_to_section (symbol.n_scnum, objfile), | |
2422 | objfile); | |
a367db89 | 2423 | break; |
df1e1074 | 2424 | |
a367db89 JK |
2425 | case XMC_GL: |
2426 | /* shared library function trampoline code entry | |
2427 | point. */ | |
2428 | ||
2429 | /* record trampoline code entries as | |
2430 | mst_solib_trampoline symbol. When we lookup mst | |
2431 | symbols, we will choose mst_text over | |
2432 | mst_solib_trampoline. */ | |
2433 | RECORD_MINIMAL_SYMBOL | |
2434 | (namestring, symbol.n_value, | |
2435 | mst_solib_trampoline, | |
2436 | secnum_to_section (symbol.n_scnum, objfile), | |
2437 | objfile); | |
2438 | break; | |
2439 | ||
2440 | case XMC_DS: | |
2441 | /* The symbols often have the same names as | |
2442 | debug symbols for functions, and confuse | |
2443 | lookup_symbol. */ | |
2444 | break; | |
2445 | ||
2446 | default: | |
2447 | ||
2448 | /* xlc puts each variable in a separate csect, | |
2449 | so we get an XTY_SD for each variable. But | |
2450 | gcc puts several variables in a csect, so | |
2451 | that each variable only gets an XTY_LD. We | |
2452 | still need to record them. This will | |
2453 | typically be XMC_RW; I suspect XMC_RO and | |
2454 | XMC_BS might be possible too. */ | |
df1e1074 PS |
2455 | if (*namestring != '.') |
2456 | prim_record_minimal_symbol_and_info | |
2457 | (namestring, symbol.n_value, | |
2458 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2459 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2460 | NULL, objfile); |
df1e1074 PS |
2461 | break; |
2462 | } | |
2463 | break; | |
a367db89 | 2464 | |
df1e1074 PS |
2465 | case XTY_CM: |
2466 | switch (csect_aux.x_csect.x_smclas) | |
2467 | { | |
2468 | case XMC_RW: | |
2469 | case XMC_BS: | |
2470 | /* Common variables are recorded in the minimal symbol | |
2471 | table, except for section symbols. */ | |
2472 | if (*namestring != '.') | |
2473 | prim_record_minimal_symbol_and_info | |
2474 | (namestring, symbol.n_value, | |
2475 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
2476 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2477 | NULL, objfile); |
a367db89 JK |
2478 | break; |
2479 | } | |
df1e1074 PS |
2480 | break; |
2481 | ||
a367db89 JK |
2482 | default: |
2483 | break; | |
2484 | } | |
2485 | } | |
2486 | break; | |
2487 | case C_FILE: | |
2488 | { | |
2489 | unsigned int symnum_before; | |
2490 | ||
2491 | symnum_before = ssymnum; | |
2492 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2493 | &ssymnum, objfile); | |
2494 | ||
2495 | /* See if the last csect needs to be recorded. */ | |
2496 | ||
2497 | if (last_csect_name && !misc_func_recorded) | |
2498 | { | |
2499 | ||
2500 | /* If no misc. function recorded in the last seen csect, enter | |
2501 | it as a function. This will take care of functions like | |
2502 | strcmp() compiled by xlc. */ | |
2503 | ||
2504 | RECORD_MINIMAL_SYMBOL | |
2505 | (last_csect_name, last_csect_val, | |
2506 | mst_text, last_csect_sec, objfile); | |
2507 | } | |
2508 | ||
2509 | if (pst) | |
2510 | { | |
2511 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
68aadb90 FF |
2512 | symnum_before, dependency_list, |
2513 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2514 | includes_used = 0; |
2515 | dependencies_used = 0; | |
2516 | } | |
2517 | first_fun_line_offset = 0; | |
2518 | ||
2519 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2520 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2521 | do things the standard COFF way and put it in the auxent. | |
2522 | We use the auxent if the symbol is ".file" and an auxent | |
2523 | exists, otherwise use the symbol itself. */ | |
2524 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2525 | { | |
2526 | filestring = coff_getfilename (&main_aux, objfile); | |
2527 | } | |
2528 | else | |
2529 | filestring = namestring; | |
2530 | ||
2531 | pst = xcoff_start_psymtab (objfile, section_offsets, | |
2532 | filestring, | |
2533 | symnum_before, | |
2534 | objfile->global_psymbols.next, | |
2535 | objfile->static_psymbols.next); | |
2536 | last_csect_name = NULL; | |
2537 | } | |
2538 | break; | |
2539 | ||
2540 | default: | |
2541 | { | |
2542 | static struct complaint msg = | |
2543 | {"Storage class %d not recognized during scan", 0, 0}; | |
2544 | complain (&msg, sclass); | |
2545 | } | |
2546 | /* FALLTHROUGH */ | |
2547 | ||
2548 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2549 | to handle only the C_FUN and C_EXT. */ | |
2550 | case C_FCN: | |
2551 | ||
2552 | case C_BSTAT: | |
2553 | case C_ESTAT: | |
2554 | case C_ARG: | |
2555 | case C_REGPARM: | |
2556 | case C_REG: | |
2557 | case C_TPDEF: | |
2558 | case C_STRTAG: | |
2559 | case C_UNTAG: | |
2560 | case C_ENTAG: | |
2561 | case C_LABEL: | |
2562 | case C_NULL: | |
2563 | ||
2564 | /* C_EINCL means we are switching back to the main file. But there | |
2565 | is no reason to care; the only thing we want to know about | |
2566 | includes is the names of all the included (.h) files. */ | |
2567 | case C_EINCL: | |
2568 | ||
2569 | case C_BLOCK: | |
2570 | ||
2571 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2572 | used instead. */ | |
2573 | case C_STAT: | |
2574 | ||
2575 | /* I don't think the name of the common block (as opposed to the | |
2576 | variables within it) is something which is user visible | |
2577 | currently. */ | |
2578 | case C_BCOMM: | |
2579 | case C_ECOMM: | |
2580 | ||
2581 | case C_PSYM: | |
2582 | case C_RPSYM: | |
2583 | ||
2584 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2585 | so C_LSYM would appear to be only for locals. */ | |
2586 | case C_LSYM: | |
2587 | ||
2588 | case C_AUTO: | |
2589 | case C_RSYM: | |
2590 | { | |
2591 | /* We probably could save a few instructions by assuming that | |
2592 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
2593 | int naux1 = | |
2594 | ((struct external_syment *)sraw_symbol)->e_numaux[0] + 1; | |
2595 | ssymnum += naux1; | |
2596 | sraw_symbol += sizeof (struct external_syment) * naux1; | |
2597 | } | |
2598 | break; | |
2599 | ||
2600 | case C_BINCL: | |
2601 | stype = N_SOL; | |
2602 | goto pstab; | |
2603 | ||
2604 | case C_FUN: | |
2605 | /* The value of the C_FUN is not the address of the function (it | |
2606 | appears to be the address before linking), but as long as it | |
2607 | is smaller than the actual address, then find_pc_partial_function | |
2608 | will use the minimal symbols instead. I hope. */ | |
2609 | ||
2610 | case C_GSYM: | |
2611 | case C_ECOML: | |
2612 | case C_DECL: | |
2613 | case C_STSYM: | |
2614 | stype = N_LSYM; | |
2615 | pstab:; | |
2616 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2617 | &ssymnum, objfile); | |
2618 | #define CUR_SYMBOL_TYPE stype | |
2619 | #define CUR_SYMBOL_VALUE symbol.n_value | |
2620 | ||
2621 | /* START_PSYMTAB and END_PSYMTAB are never used, because they are only | |
2622 | called from DBXREAD_ONLY or N_SO code. Likewise for the symnum | |
2623 | variable. */ | |
2624 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms) 0 | |
68aadb90 | 2625 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\ |
a367db89 JK |
2626 | do {} while (0) |
2627 | /* We have already set the namestring. */ | |
df1e1074 | 2628 | #define SET_NAMESTRING() /* */ |
a367db89 JK |
2629 | |
2630 | #include "partial-stab.h" | |
2631 | } | |
2632 | } | |
a367db89 JK |
2633 | |
2634 | if (pst) | |
2635 | { | |
2636 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
68aadb90 FF |
2637 | ssymnum, dependency_list, |
2638 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2639 | } |
2640 | ||
2641 | /* Record the toc offset value of this symbol table into ldinfo structure. | |
2642 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
2643 | this information would be file auxiliary header. */ | |
2644 | ||
062cb0d3 FF |
2645 | if (xcoff_add_toc_to_loadinfo_hook != NULL) |
2646 | (*xcoff_add_toc_to_loadinfo_hook) ((unsigned long) toc_offset); | |
e38e0312 JG |
2647 | } |
2648 | ||
a367db89 JK |
2649 | /* Scan and build partial symbols for a symbol file. |
2650 | We have been initialized by a call to dbx_symfile_init, which | |
2651 | put all the relevant info into a "struct dbx_symfile_info", | |
2652 | hung off the objfile structure. | |
e38e0312 | 2653 | |
a367db89 JK |
2654 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
2655 | various sections are (depending where the sections were actually loaded). | |
2656 | MAINLINE is true if we are reading the main symbol | |
2657 | table (as opposed to a shared lib or dynamically loaded file). */ | |
e38e0312 | 2658 | |
1ab3bf1b | 2659 | static void |
a367db89 JK |
2660 | xcoff_initial_scan (objfile, section_offsets, mainline) |
2661 | struct objfile *objfile; | |
2662 | struct section_offsets *section_offsets; | |
2663 | int mainline; /* FIXME comments above */ | |
e38e0312 | 2664 | { |
a367db89 JK |
2665 | bfd *abfd; |
2666 | int val; | |
2667 | struct cleanup *back_to; | |
d5931d79 JG |
2668 | int num_symbols; /* # of symbols */ |
2669 | file_ptr symtab_offset; /* symbol table and */ | |
2670 | file_ptr stringtab_offset; /* string table file offsets */ | |
80d68b1d | 2671 | struct coff_symfile_info *info; |
e38e0312 | 2672 | char *name; |
a367db89 JK |
2673 | unsigned int size; |
2674 | ||
a367db89 | 2675 | /* Initialize load info structure. */ |
062cb0d3 FF |
2676 | if (mainline && xcoff_init_loadinfo_hook != NULL) |
2677 | (*xcoff_init_loadinfo_hook) (); | |
e38e0312 | 2678 | |
80d68b1d FF |
2679 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2680 | symfile_bfd = abfd = objfile->obfd; | |
2681 | name = objfile->name; | |
e38e0312 JG |
2682 | |
2683 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2684 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2685 | stringtab_offset = symtab_offset + | |
2686 | num_symbols * coff_data(abfd)->local_symesz; | |
2687 | ||
2688 | info->min_lineno_offset = 0; | |
2689 | info->max_lineno_offset = 0; | |
2690 | bfd_map_over_sections (abfd, find_linenos, info); | |
2691 | ||
9d61147e JK |
2692 | if (num_symbols > 0) |
2693 | { | |
a367db89 JK |
2694 | /* Read the string table. */ |
2695 | init_stringtab (abfd, stringtab_offset, objfile); | |
e38e0312 | 2696 | |
a367db89 JK |
2697 | /* Read the .debug section, if present. */ |
2698 | { | |
2699 | sec_ptr secp; | |
2700 | bfd_size_type length; | |
2701 | char *debugsec = NULL; | |
2702 | ||
2703 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2704 | if (secp) | |
2705 | { | |
2706 | length = bfd_section_size (abfd, secp); | |
2707 | if (length) | |
2708 | { | |
2709 | debugsec = | |
2710 | (char *) obstack_alloc (&objfile->symbol_obstack, length); | |
2711 | ||
2712 | if (!bfd_get_section_contents (abfd, secp, debugsec, | |
2713 | (file_ptr) 0, length)) | |
2714 | { | |
2715 | error ("Error reading .debug section of `%s': %s", | |
2716 | name, bfd_errmsg (bfd_get_error ())); | |
2717 | } | |
2718 | } | |
2719 | } | |
2720 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec = | |
2721 | debugsec; | |
9d61147e JK |
2722 | } |
2723 | } | |
e38e0312 | 2724 | |
a367db89 JK |
2725 | /* Read the symbols. We keep them in core because we will want to |
2726 | access them randomly in read_symbol*. */ | |
987622b5 | 2727 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); |
e38e0312 | 2728 | if (val < 0) |
a367db89 JK |
2729 | error ("Error reading symbols from %s: %s", |
2730 | name, bfd_errmsg (bfd_get_error ())); | |
2731 | size = coff_data (abfd)->local_symesz * num_symbols; | |
2732 | ((struct coff_symfile_info *)objfile->sym_private)->symtbl = | |
2733 | obstack_alloc (&objfile->symbol_obstack, size); | |
2734 | ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms = | |
2735 | num_symbols; | |
2736 | ||
2737 | val = bfd_read (((struct coff_symfile_info *)objfile->sym_private)->symtbl, | |
2738 | size, 1, abfd); | |
2739 | if (val != size) | |
2740 | perror_with_name ("reading symbol table"); | |
2741 | ||
2742 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
2743 | if (mainline | |
2744 | || objfile->global_psymbols.size == 0 | |
2745 | || objfile->static_psymbols.size == 0) | |
2746 | /* I'm not sure how how good num_symbols is; the rule of thumb in | |
2747 | init_psymbol_list was developed for a.out. On the one hand, | |
2748 | num_symbols includes auxents. On the other hand, it doesn't | |
2749 | include N_SLINE. */ | |
2750 | init_psymbol_list (objfile, num_symbols); | |
e38e0312 | 2751 | |
a7f56d5a | 2752 | free_pending_blocks (); |
a367db89 | 2753 | back_to = make_cleanup (really_free_pendings, 0); |
e38e0312 | 2754 | |
1ab3bf1b JG |
2755 | init_minimal_symbol_collection (); |
2756 | make_cleanup (discard_minimal_symbols, 0); | |
e38e0312 | 2757 | |
a367db89 JK |
2758 | /* Now that the symbol table data of the executable file are all in core, |
2759 | process them and define symbols accordingly. */ | |
e38e0312 | 2760 | |
a367db89 | 2761 | scan_xcoff_symtab (section_offsets, objfile); |
e38e0312 | 2762 | |
1ab3bf1b JG |
2763 | /* Install any minimal symbols that have been collected as the current |
2764 | minimal symbols for this objfile. */ | |
2765 | ||
80d68b1d | 2766 | install_minimal_symbols (objfile); |
0eb22669 PS |
2767 | |
2768 | do_cleanups (back_to); | |
e38e0312 | 2769 | } |
a367db89 | 2770 | \f |
e2adc41a | 2771 | static struct section_offsets * |
9b280a7f | 2772 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2773 | struct objfile *objfile; |
2774 | CORE_ADDR addr; | |
2775 | { | |
2776 | struct section_offsets *section_offsets; | |
2777 | int i; | |
3c02636b | 2778 | |
e2adc41a | 2779 | objfile->num_sections = SECT_OFF_MAX; |
2670f34d | 2780 | section_offsets = (struct section_offsets *) |
3c02636b JK |
2781 | obstack_alloc |
2782 | (&objfile -> psymbol_obstack, | |
2783 | sizeof (struct section_offsets) | |
e2adc41a | 2784 | + sizeof (section_offsets->offsets) * objfile->num_sections); |
2670f34d | 2785 | |
1d7e34e1 JK |
2786 | /* syms_from_objfile kindly subtracts from addr the bfd_section_vma |
2787 | of the .text section. This strikes me as wrong--whether the | |
2788 | offset to be applied to symbol reading is relative to the start | |
2789 | address of the section depends on the symbol format. In any | |
2790 | event, this whole "addr" concept is pretty broken (it doesn't | |
2791 | handle any section but .text sensibly), so just ignore the addr | |
a367db89 JK |
2792 | parameter and use 0. rs6000-nat.c will set the correct section |
2793 | offsets via objfile_relocate. */ | |
e2adc41a | 2794 | for (i = 0; i < objfile->num_sections; ++i) |
38fb211b | 2795 | ANOFFSET (section_offsets, i) = 0; |
e2adc41a | 2796 | |
2670f34d JG |
2797 | return section_offsets; |
2798 | } | |
0eed42de JK |
2799 | |
2800 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
e38e0312 | 2801 | |
9b280a7f | 2802 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2803 | { |
0eed42de JK |
2804 | |
2805 | /* Because the bfd uses coff_flavour, we need to specially kludge | |
e2adc41a JK |
2806 | the flavour. It is possible that coff and xcoff should be merged as |
2807 | they do have fundamental similarities (for example, the extra storage | |
2808 | classes used for stabs could presumably be recognized in any COFF file). | |
2809 | However, in addition to obvious things like all the csect hair, there are | |
2810 | some subtler differences between xcoffread.c and coffread.c, notably | |
2811 | the fact that coffread.c has no need to read in all the symbols, but | |
2812 | xcoffread.c reads all the symbols and does in fact randomly access them | |
a367db89 | 2813 | (in C_BSTAT and line number processing). */ |
0eed42de | 2814 | |
52912aac | 2815 | (enum bfd_flavour)-1, |
0eed42de | 2816 | |
9b280a7f JG |
2817 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2818 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
a367db89 | 2819 | xcoff_initial_scan, /* sym_read: read a symbol file into symtab */ |
9b280a7f JG |
2820 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ |
2821 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2822 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2823 | }; |
2824 | ||
2825 | void | |
2826 | _initialize_xcoffread () | |
2827 | { | |
9b280a7f | 2828 | add_symtab_fns(&xcoff_sym_fns); |
e5eeaaf8 | 2829 | |
a81ce07d JK |
2830 | func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, |
2831 | "<function, no debug info>", NULL); | |
2832 | TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int; | |
2833 | var_symbol_type = | |
2834 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
2835 | "<variable, no debug info>", NULL); | |
e38e0312 | 2836 | } |