Commit | Line | Data |
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c906108c SS |
1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 1997 | |
c5aa993b | 3 | Free Software Foundation, Inc. |
c906108c SS |
4 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
5 | Contributed by IBM Corporation. | |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
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. | |
c906108c | 13 | |
c5aa993b JM |
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. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "bfd.h" | |
26 | ||
27 | #include <sys/types.h> | |
28 | #include <fcntl.h> | |
29 | #include <ctype.h> | |
30 | #include "gdb_string.h" | |
31 | ||
32 | #include <sys/param.h> | |
33 | #ifndef NO_SYS_FILE | |
34 | #include <sys/file.h> | |
35 | #endif | |
36 | #include "gdb_stat.h" | |
37 | ||
38 | #include "coff/internal.h" | |
39 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
40 | #include "coff/rs6000.h" | |
41 | ||
42 | #include "symtab.h" | |
43 | #include "gdbtypes.h" | |
44 | #include "symfile.h" | |
45 | #include "objfiles.h" | |
46 | #include "buildsym.h" | |
47 | #include "stabsread.h" | |
48 | #include "expression.h" | |
49 | #include "language.h" /* Needed inside partial-stab.h */ | |
50 | #include "complaints.h" | |
51 | ||
52 | #include "gdb-stabs.h" | |
53 | ||
54 | /* For interface with stabsread.c. */ | |
55 | #include "aout/stab_gnu.h" | |
56 | ||
57 | /* For interface with partial-stab.h. */ | |
c5aa993b | 58 | #define N_UNDF 0 /* Undefined symbol */ |
c906108c SS |
59 | #undef N_ABS |
60 | #define N_ABS 2 | |
c5aa993b JM |
61 | #define N_TEXT 4 /* Text sym -- defined at offset in text seg */ |
62 | #define N_DATA 6 /* Data sym -- defined at offset in data seg */ | |
63 | #define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */ | |
64 | #define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */ | |
65 | #define N_FN 0x1f /* File name of .o file */ | |
66 | #define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */ | |
c906108c SS |
67 | /* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT, |
68 | N_DATA, or N_BSS. When the low-order bit of other types is set, | |
69 | (e.g. N_WARNING versus N_FN), they are two different types. */ | |
c5aa993b | 70 | #define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */ |
c906108c SS |
71 | #define N_INDR 0x0a |
72 | ||
73 | /* The following symbols refer to set elements. | |
74 | All the N_SET[ATDB] symbols with the same name form one set. | |
75 | Space is allocated for the set in the text section, and each set | |
76 | elements value is stored into one word of the space. | |
77 | The first word of the space is the length of the set (number of elements). | |
78 | ||
79 | The address of the set is made into an N_SETV symbol | |
80 | whose name is the same as the name of the set. | |
81 | This symbol acts like a N_DATA global symbol | |
82 | in that it can satisfy undefined external references. */ | |
83 | ||
84 | /* These appear as input to LD, in a .o file. */ | |
85 | #define N_SETA 0x14 /* Absolute set element symbol */ | |
86 | #define N_SETT 0x16 /* Text set element symbol */ | |
87 | #define N_SETD 0x18 /* Data set element symbol */ | |
88 | #define N_SETB 0x1A /* Bss set element symbol */ | |
89 | ||
90 | /* This is output from LD. */ | |
91 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ | |
92 | \f | |
93 | /* We put a pointer to this structure in the read_symtab_private field | |
94 | of the psymtab. */ | |
95 | ||
c5aa993b JM |
96 | struct symloc |
97 | { | |
c906108c | 98 | |
c5aa993b | 99 | /* First symbol number for this file. */ |
c906108c | 100 | |
c5aa993b | 101 | int first_symnum; |
c906108c | 102 | |
c5aa993b JM |
103 | /* Number of symbols in the section of the symbol table devoted to |
104 | this file's symbols (actually, the section bracketed may contain | |
105 | more than just this file's symbols). If numsyms is 0, the only | |
106 | reason for this thing's existence is the dependency list. Nothing | |
107 | else will happen when it is read in. */ | |
c906108c | 108 | |
c5aa993b | 109 | int numsyms; |
c906108c | 110 | |
c5aa993b JM |
111 | /* Position of the start of the line number information for this psymtab. */ |
112 | unsigned int lineno_off; | |
113 | }; | |
c906108c SS |
114 | |
115 | /* Remember what we deduced to be the source language of this psymtab. */ | |
116 | ||
117 | static enum language psymtab_language = language_unknown; | |
c906108c | 118 | \f |
c5aa993b | 119 | |
c906108c SS |
120 | /* Simplified internal version of coff symbol table information */ |
121 | ||
c5aa993b JM |
122 | struct coff_symbol |
123 | { | |
124 | char *c_name; | |
125 | int c_symnum; /* symbol number of this entry */ | |
126 | int c_naux; /* 0 if syment only, 1 if syment + auxent */ | |
127 | long c_value; | |
128 | unsigned char c_sclass; | |
129 | int c_secnum; | |
130 | unsigned int c_type; | |
131 | }; | |
c906108c SS |
132 | |
133 | /* last function's saved coff symbol `cs' */ | |
134 | ||
135 | static struct coff_symbol fcn_cs_saved; | |
136 | ||
137 | static bfd *symfile_bfd; | |
138 | ||
139 | /* Core address of start and end of text of current source file. | |
140 | This is calculated from the first function seen after a C_FILE | |
141 | symbol. */ | |
142 | ||
143 | ||
144 | static CORE_ADDR cur_src_end_addr; | |
145 | ||
146 | /* Core address of the end of the first object file. */ | |
147 | ||
148 | static CORE_ADDR first_object_file_end; | |
149 | ||
150 | /* initial symbol-table-debug-string vector length */ | |
151 | ||
152 | #define INITIAL_STABVECTOR_LENGTH 40 | |
153 | ||
154 | /* Nonzero if within a function (so symbols should be local, | |
155 | if nothing says specifically). */ | |
156 | ||
157 | int within_function; | |
158 | ||
159 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure | |
160 | there is any reason not to just use a #define, but might as well | |
161 | ask BFD for the size and store it here, I guess. */ | |
162 | ||
c5aa993b | 163 | static unsigned local_symesz; |
c906108c | 164 | |
c5aa993b JM |
165 | struct coff_symfile_info |
166 | { | |
167 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
168 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
c906108c | 169 | |
c5aa993b JM |
170 | /* Pointer to the string table. */ |
171 | char *strtbl; | |
c906108c | 172 | |
c5aa993b JM |
173 | /* Pointer to debug section. */ |
174 | char *debugsec; | |
c906108c | 175 | |
c5aa993b JM |
176 | /* Pointer to the a.out symbol table. */ |
177 | char *symtbl; | |
c906108c | 178 | |
c5aa993b JM |
179 | /* Number of symbols in symtbl. */ |
180 | int symtbl_num_syms; | |
c906108c | 181 | |
c5aa993b JM |
182 | /* Offset in data section to TOC anchor. */ |
183 | CORE_ADDR toc_offset; | |
184 | }; | |
c906108c SS |
185 | |
186 | static struct complaint storclass_complaint = | |
c5aa993b | 187 | {"Unexpected storage class: %d", 0, 0}; |
c906108c SS |
188 | |
189 | static struct complaint bf_notfound_complaint = | |
c5aa993b | 190 | {"line numbers off, `.bf' symbol not found", 0, 0}; |
c906108c | 191 | |
c5aa993b JM |
192 | static struct complaint ef_complaint = |
193 | {"Mismatched .ef symbol ignored starting at symnum %d", 0, 0}; | |
c906108c | 194 | |
c5aa993b JM |
195 | static struct complaint eb_complaint = |
196 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
c906108c | 197 | |
a14ed312 | 198 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 199 | |
a14ed312 | 200 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 201 | |
a14ed312 | 202 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 203 | |
a14ed312 | 204 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
205 | |
206 | static void | |
a14ed312 KB |
207 | enter_line_range (struct subfile *, unsigned, unsigned, |
208 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 209 | |
a14ed312 | 210 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 211 | |
a14ed312 | 212 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 213 | |
a14ed312 | 214 | static void xcoff_new_init (struct objfile *); |
c906108c | 215 | |
a14ed312 | 216 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 217 | |
d4f3574e | 218 | static void |
a14ed312 | 219 | xcoff_symfile_offsets (struct objfile *, struct section_addr_info *addrs); |
c906108c | 220 | |
a14ed312 | 221 | static void find_linenos (bfd *, sec_ptr, PTR); |
c906108c | 222 | |
a14ed312 | 223 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 224 | |
a14ed312 | 225 | static void read_symbol (struct internal_syment *, int); |
c906108c | 226 | |
a14ed312 | 227 | static int read_symbol_lineno (int); |
c906108c | 228 | |
470d5666 | 229 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 230 | |
a14ed312 KB |
231 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
232 | struct objfile *); | |
c906108c | 233 | |
a14ed312 | 234 | static void read_xcoff_symtab (struct partial_symtab *); |
c906108c SS |
235 | |
236 | #if 0 | |
a14ed312 | 237 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
238 | #endif |
239 | ||
a14ed312 | 240 | static int compare_lte (const void *, const void *); |
c906108c | 241 | |
a14ed312 | 242 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 243 | |
a14ed312 | 244 | static void record_include_end (struct coff_symbol *); |
c906108c | 245 | |
a14ed312 | 246 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 247 | \f |
c5aa993b | 248 | |
c906108c SS |
249 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
250 | code. */ | |
a14ed312 KB |
251 | static int secnum_to_section (int, struct objfile *); |
252 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 253 | |
c5aa993b JM |
254 | struct find_targ_sec_arg |
255 | { | |
256 | int targ_index; | |
257 | int *resultp; | |
258 | asection **bfd_sect; | |
b8fbeb18 | 259 | struct objfile *objfile; |
c5aa993b | 260 | }; |
c906108c | 261 | |
a14ed312 | 262 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 263 | |
c5aa993b | 264 | static void |
fba45db2 | 265 | find_targ_sec (bfd *abfd, asection *sect, PTR obj) |
c906108c | 266 | { |
c5aa993b | 267 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 268 | struct objfile *objfile = args->objfile; |
c906108c SS |
269 | if (sect->target_index == args->targ_index) |
270 | { | |
271 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
272 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 273 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 274 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 275 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 276 | else |
44af9391 | 277 | *args->resultp = sect->index; |
c906108c SS |
278 | *args->bfd_sect = sect; |
279 | } | |
280 | } | |
281 | ||
282 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
283 | static int | |
fba45db2 | 284 | secnum_to_section (int secnum, struct objfile *objfile) |
c906108c | 285 | { |
b8fbeb18 | 286 | int off = SECT_OFF_TEXT (objfile); |
c906108c SS |
287 | asection *sect = NULL; |
288 | struct find_targ_sec_arg args; | |
289 | args.targ_index = secnum; | |
290 | args.resultp = &off; | |
291 | args.bfd_sect = § | |
b8fbeb18 | 292 | args.objfile = objfile; |
c906108c SS |
293 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
294 | return off; | |
295 | } | |
296 | ||
297 | /* Return the BFD section that CS points to. */ | |
298 | static asection * | |
fba45db2 | 299 | secnum_to_bfd_section (int secnum, struct objfile *objfile) |
c906108c | 300 | { |
b8fbeb18 | 301 | int off = SECT_OFF_TEXT (objfile); |
c906108c SS |
302 | asection *sect = NULL; |
303 | struct find_targ_sec_arg args; | |
304 | args.targ_index = secnum; | |
305 | args.resultp = &off; | |
306 | args.bfd_sect = § | |
7a78ae4e | 307 | args.objfile = objfile; |
c906108c SS |
308 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
309 | return sect; | |
310 | } | |
311 | \f | |
312 | /* add a given stab string into given stab vector. */ | |
313 | ||
314 | #if 0 | |
315 | ||
316 | static void | |
fba45db2 | 317 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 318 | { |
c5aa993b JM |
319 | if (*stabvector == NULL) |
320 | { | |
321 | *stabvector = (struct pending_stabs *) | |
322 | xmalloc (sizeof (struct pending_stabs) + | |
323 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
324 | (*stabvector)->count = 0; | |
325 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
326 | } | |
327 | else if ((*stabvector)->count >= (*stabvector)->length) | |
328 | { | |
329 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
330 | *stabvector = (struct pending_stabs *) | |
331 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
332 | (*stabvector)->length * sizeof (char *)); | |
333 | } | |
334 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
335 | } |
336 | ||
337 | #endif | |
c5aa993b | 338 | \f/* *INDENT-OFF* */ |
c906108c SS |
339 | /* Linenos are processed on a file-by-file basis. |
340 | ||
341 | Two reasons: | |
342 | ||
c5aa993b JM |
343 | 1) xlc (IBM's native c compiler) postpones static function code |
344 | emission to the end of a compilation unit. This way it can | |
345 | determine if those functions (statics) are needed or not, and | |
346 | can do some garbage collection (I think). This makes line | |
347 | numbers and corresponding addresses unordered, and we end up | |
348 | with a line table like: | |
349 | ||
350 | ||
351 | lineno addr | |
352 | foo() 10 0x100 | |
353 | 20 0x200 | |
354 | 30 0x300 | |
355 | ||
356 | foo3() 70 0x400 | |
357 | 80 0x500 | |
358 | 90 0x600 | |
359 | ||
360 | static foo2() | |
361 | 40 0x700 | |
362 | 50 0x800 | |
363 | 60 0x900 | |
364 | ||
365 | and that breaks gdb's binary search on line numbers, if the | |
366 | above table is not sorted on line numbers. And that sort | |
367 | should be on function based, since gcc can emit line numbers | |
368 | like: | |
369 | ||
370 | 10 0x100 - for the init/test part of a for stmt. | |
371 | 20 0x200 | |
372 | 30 0x300 | |
373 | 10 0x400 - for the increment part of a for stmt. | |
374 | ||
375 | arrange_linetable() will do this sorting. | |
376 | ||
377 | 2) aix symbol table might look like: | |
378 | ||
379 | c_file // beginning of a new file | |
380 | .bi // beginning of include file | |
381 | .ei // end of include file | |
382 | .bi | |
383 | .ei | |
384 | ||
385 | basically, .bi/.ei pairs do not necessarily encapsulate | |
386 | their scope. They need to be recorded, and processed later | |
387 | on when we come the end of the compilation unit. | |
388 | Include table (inclTable) and process_linenos() handle | |
389 | that. */ | |
9846de1b | 390 | /* *INDENT-ON* */ |
c906108c | 391 | |
c5aa993b JM |
392 | |
393 | ||
c906108c SS |
394 | /* compare line table entry addresses. */ |
395 | ||
396 | static int | |
fba45db2 | 397 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
398 | { |
399 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
400 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
401 | return lte1->pc - lte2->pc; | |
402 | } | |
403 | ||
404 | /* Given a line table with function entries are marked, arrange its functions | |
405 | in ascending order and strip off function entry markers and return it in | |
406 | a newly created table. If the old one is good enough, return the old one. */ | |
407 | /* FIXME: I think all this stuff can be replaced by just passing | |
408 | sort_linevec = 1 to end_symtab. */ | |
409 | ||
410 | static struct linetable * | |
b095261a | 411 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 412 | { |
c5aa993b JM |
413 | int ii, jj, newline, /* new line count */ |
414 | function_count; /* # of functions */ | |
c906108c | 415 | |
c5aa993b JM |
416 | struct linetable_entry *fentry; /* function entry vector */ |
417 | int fentry_size; /* # of function entries */ | |
418 | struct linetable *newLineTb; /* new line table */ | |
c906108c SS |
419 | |
420 | #define NUM_OF_FUNCTIONS 20 | |
421 | ||
422 | fentry_size = NUM_OF_FUNCTIONS; | |
c5aa993b | 423 | fentry = (struct linetable_entry *) |
c906108c SS |
424 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
425 | ||
c5aa993b JM |
426 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
427 | { | |
c906108c | 428 | |
c5aa993b JM |
429 | if (oldLineTb->item[ii].line == 0) |
430 | { /* function entry found. */ | |
c906108c | 431 | |
c5aa993b JM |
432 | if (function_count >= fentry_size) |
433 | { /* make sure you have room. */ | |
434 | fentry_size *= 2; | |
435 | fentry = (struct linetable_entry *) | |
436 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); | |
437 | } | |
438 | fentry[function_count].line = ii; | |
439 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
440 | ++function_count; | |
441 | } | |
c906108c | 442 | } |
c906108c | 443 | |
c5aa993b JM |
444 | if (function_count == 0) |
445 | { | |
b8c9b27d | 446 | xfree (fentry); |
c5aa993b JM |
447 | return oldLineTb; |
448 | } | |
c906108c | 449 | else if (function_count > 1) |
c5aa993b | 450 | qsort (fentry, function_count, sizeof (struct linetable_entry), compare_lte); |
c906108c SS |
451 | |
452 | /* allocate a new line table. */ | |
453 | newLineTb = (struct linetable *) | |
454 | xmalloc | |
c5aa993b JM |
455 | (sizeof (struct linetable) + |
456 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
c906108c SS |
457 | |
458 | /* if line table does not start with a function beginning, copy up until | |
459 | a function begin. */ | |
460 | ||
461 | newline = 0; | |
462 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
463 | for (newline = 0; |
464 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
465 | newLineTb->item[newline] = oldLineTb->item[newline]; |
466 | ||
467 | /* Now copy function lines one by one. */ | |
468 | ||
c5aa993b JM |
469 | for (ii = 0; ii < function_count; ++ii) |
470 | { | |
471 | for (jj = fentry[ii].line + 1; | |
472 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
473 | ++jj, ++newline) | |
474 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
475 | } | |
b8c9b27d | 476 | xfree (fentry); |
c906108c | 477 | newLineTb->nitems = oldLineTb->nitems - function_count; |
c5aa993b JM |
478 | return newLineTb; |
479 | } | |
c906108c SS |
480 | |
481 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
482 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
483 | we will determine if we should create additional symtab's to | |
484 | represent if (the include files. */ | |
485 | ||
486 | ||
c5aa993b JM |
487 | typedef struct _inclTable |
488 | { | |
489 | char *name; /* include filename */ | |
c906108c SS |
490 | |
491 | /* Offsets to the line table. end points to the last entry which is | |
492 | part of this include file. */ | |
c5aa993b JM |
493 | int begin, end; |
494 | ||
c906108c | 495 | struct subfile *subfile; |
c5aa993b JM |
496 | unsigned funStartLine; /* start line # of its function */ |
497 | } | |
498 | InclTable; | |
c906108c SS |
499 | |
500 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
501 | static InclTable *inclTable; /* global include table */ |
502 | static int inclIndx; /* last entry to table */ | |
503 | static int inclLength; /* table length */ | |
504 | static int inclDepth; /* nested include depth */ | |
c906108c | 505 | |
a14ed312 | 506 | static void allocate_include_entry (void); |
c906108c SS |
507 | |
508 | static void | |
fba45db2 | 509 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
510 | { |
511 | if (inclDepth) | |
512 | { | |
513 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 514 | of course, but in corresponding .s files.). */ |
c906108c SS |
515 | |
516 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
517 | GCC 2.3.3-930426 does not exhibit this on a test case which |
518 | a user said produced the message for him. */ | |
519 | static struct complaint msg = | |
520 | {"Nested C_BINCL symbols", 0, 0}; | |
c906108c SS |
521 | complain (&msg); |
522 | } | |
523 | ++inclDepth; | |
524 | ||
525 | allocate_include_entry (); | |
526 | ||
c5aa993b JM |
527 | inclTable[inclIndx].name = cs->c_name; |
528 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
529 | } |
530 | ||
531 | static void | |
fba45db2 | 532 | record_include_end (struct coff_symbol *cs) |
c906108c | 533 | { |
c5aa993b | 534 | InclTable *pTbl; |
c906108c SS |
535 | |
536 | if (inclDepth == 0) | |
537 | { | |
c5aa993b JM |
538 | static struct complaint msg = |
539 | {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; | |
c906108c SS |
540 | complain (&msg); |
541 | } | |
542 | ||
543 | allocate_include_entry (); | |
544 | ||
c5aa993b | 545 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
546 | pTbl->end = cs->c_value; |
547 | ||
548 | --inclDepth; | |
549 | ++inclIndx; | |
550 | } | |
551 | ||
552 | static void | |
fba45db2 | 553 | allocate_include_entry (void) |
c906108c SS |
554 | { |
555 | if (inclTable == NULL) | |
556 | { | |
c5aa993b | 557 | inclTable = (InclTable *) |
c906108c SS |
558 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
559 | memset (inclTable, | |
560 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
561 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
562 | inclIndx = 0; | |
563 | } | |
564 | else if (inclIndx >= inclLength) | |
565 | { | |
566 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
c5aa993b | 567 | inclTable = (InclTable *) |
c906108c | 568 | xrealloc (inclTable, sizeof (InclTable) * inclLength); |
c5aa993b JM |
569 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
570 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
571 | } |
572 | } | |
573 | ||
574 | /* Global variable to pass the psymtab down to all the routines involved | |
575 | in psymtab to symtab processing. */ | |
576 | static struct partial_symtab *this_symtab_psymtab; | |
577 | ||
578 | /* given the start and end addresses of a compilation unit (or a csect, | |
579 | at times) process its lines and create appropriate line vectors. */ | |
580 | ||
581 | static void | |
fba45db2 | 582 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
583 | { |
584 | int offset, ii; | |
585 | file_ptr max_offset = | |
c5aa993b JM |
586 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile->sym_private) |
587 | ->max_lineno_offset; | |
c906108c SS |
588 | |
589 | /* subfile structure for the main compilation unit. */ | |
590 | struct subfile main_subfile; | |
591 | ||
592 | /* In the main source file, any time we see a function entry, we | |
593 | reset this variable to function's absolute starting line number. | |
594 | All the following line numbers in the function are relative to | |
595 | this, and we record absolute line numbers in record_line(). */ | |
596 | ||
597 | unsigned int main_source_baseline = 0; | |
598 | ||
599 | unsigned *firstLine; | |
600 | ||
601 | offset = | |
c5aa993b | 602 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
603 | if (offset == 0) |
604 | goto return_after_cleanup; | |
605 | ||
606 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
607 | ||
608 | if (inclIndx == 0) | |
609 | /* All source lines were in the main source file. None in include files. */ | |
610 | ||
c5aa993b JM |
611 | enter_line_range (&main_subfile, offset, 0, start, end, |
612 | &main_source_baseline); | |
c906108c SS |
613 | |
614 | else | |
615 | { | |
616 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
617 | |
618 | int linesz = | |
619 | coff_data (this_symtab_psymtab->objfile->obfd)->local_linesz; | |
c906108c | 620 | main_source_baseline = 0; |
7a78ae4e | 621 | |
c5aa993b | 622 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
623 | { |
624 | struct subfile *tmpSubfile; | |
625 | ||
626 | /* If there is main file source before include file, enter it. */ | |
627 | if (offset < inclTable[ii].begin) | |
628 | { | |
629 | enter_line_range | |
7a78ae4e | 630 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
631 | start, 0, &main_source_baseline); |
632 | } | |
633 | ||
634 | /* Have a new subfile for the include file. */ | |
635 | ||
636 | tmpSubfile = inclTable[ii].subfile = | |
637 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
638 | ||
639 | memset (tmpSubfile, '\0', sizeof (struct subfile)); | |
640 | firstLine = &(inclTable[ii].funStartLine); | |
641 | ||
642 | /* Enter include file's lines now. */ | |
c5aa993b | 643 | enter_line_range (tmpSubfile, inclTable[ii].begin, |
c906108c SS |
644 | inclTable[ii].end, start, 0, firstLine); |
645 | ||
646 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 647 | offset = inclTable[ii].end + linesz; |
c906108c SS |
648 | } |
649 | ||
650 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 651 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 652 | if (offset < max_offset + 1 - linesz) |
c906108c | 653 | { |
c5aa993b | 654 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
655 | &main_source_baseline); |
656 | } | |
657 | } | |
658 | ||
659 | /* Process main file's line numbers. */ | |
660 | if (main_subfile.line_vector) | |
661 | { | |
662 | struct linetable *lineTb, *lv; | |
663 | ||
664 | lv = main_subfile.line_vector; | |
665 | ||
666 | /* Line numbers are not necessarily ordered. xlc compilation will | |
c5aa993b | 667 | put static function to the end. */ |
c906108c SS |
668 | |
669 | lineTb = arrange_linetable (lv); | |
670 | if (lv == lineTb) | |
671 | { | |
672 | current_subfile->line_vector = (struct linetable *) | |
673 | xrealloc (lv, (sizeof (struct linetable) | |
674 | + lv->nitems * sizeof (struct linetable_entry))); | |
675 | } | |
676 | else | |
677 | { | |
b8c9b27d | 678 | xfree (lv); |
c906108c SS |
679 | current_subfile->line_vector = lineTb; |
680 | } | |
681 | ||
c5aa993b | 682 | current_subfile->line_vector_length = |
c906108c SS |
683 | current_subfile->line_vector->nitems; |
684 | } | |
685 | ||
686 | /* Now, process included files' line numbers. */ | |
687 | ||
c5aa993b | 688 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 689 | { |
c5aa993b | 690 | if ((inclTable[ii].subfile)->line_vector) /* Useless if!!! FIXMEmgo */ |
c906108c SS |
691 | { |
692 | struct linetable *lineTb, *lv; | |
693 | ||
694 | lv = (inclTable[ii].subfile)->line_vector; | |
695 | ||
696 | /* Line numbers are not necessarily ordered. xlc compilation will | |
697 | put static function to the end. */ | |
698 | ||
699 | lineTb = arrange_linetable (lv); | |
700 | ||
701 | push_subfile (); | |
702 | ||
703 | /* For the same include file, we might want to have more than one | |
704 | subfile. This happens if we have something like: | |
705 | ||
c5aa993b JM |
706 | ...... |
707 | #include "foo.h" | |
708 | ...... | |
709 | #include "foo.h" | |
710 | ...... | |
c906108c SS |
711 | |
712 | while foo.h including code in it. (stupid but possible) | |
713 | Since start_subfile() looks at the name and uses an | |
714 | existing one if finds, we need to provide a fake name and | |
715 | fool it. */ | |
716 | ||
717 | #if 0 | |
c5aa993b | 718 | start_subfile (inclTable[ii].name, (char *) 0); |
c906108c SS |
719 | #else |
720 | { | |
721 | /* Pick a fake name that will produce the same results as this | |
722 | one when passed to deduce_language_from_filename. Kludge on | |
723 | top of kludge. */ | |
724 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
725 | if (fakename == NULL) | |
726 | fakename = " ?"; | |
c5aa993b | 727 | start_subfile (fakename, (char *) 0); |
b8c9b27d | 728 | xfree (current_subfile->name); |
c906108c | 729 | } |
c2d11a7d | 730 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
731 | #endif |
732 | ||
733 | if (lv == lineTb) | |
734 | { | |
735 | current_subfile->line_vector = | |
736 | (struct linetable *) xrealloc | |
c5aa993b JM |
737 | (lv, (sizeof (struct linetable) |
738 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
739 | |
740 | } | |
741 | else | |
742 | { | |
b8c9b27d | 743 | xfree (lv); |
c906108c SS |
744 | current_subfile->line_vector = lineTb; |
745 | } | |
746 | ||
c5aa993b | 747 | current_subfile->line_vector_length = |
c906108c | 748 | current_subfile->line_vector->nitems; |
c5aa993b | 749 | start_subfile (pop_subfile (), (char *) 0); |
c906108c SS |
750 | } |
751 | } | |
752 | ||
c5aa993b | 753 | return_after_cleanup: |
c906108c SS |
754 | |
755 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
756 | inclIndx = 0; | |
757 | ||
758 | /* Start with a fresh subfile structure for the next file. */ | |
759 | memset (&main_subfile, '\0', sizeof (struct subfile)); | |
760 | } | |
761 | ||
762 | void | |
fba45db2 | 763 | aix_process_linenos (void) |
c906108c SS |
764 | { |
765 | /* process line numbers and enter them into line vector */ | |
766 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
767 | } | |
768 | ||
769 | ||
770 | /* Enter a given range of lines into the line vector. | |
771 | can be called in the following two ways: | |
c5aa993b JM |
772 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
773 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) | |
c906108c SS |
774 | |
775 | endoffset points to the last line table entry that we should pay | |
776 | attention to. */ | |
777 | ||
778 | static void | |
fba45db2 KB |
779 | enter_line_range (struct subfile *subfile, unsigned beginoffset, unsigned endoffset, /* offsets to line table */ |
780 | CORE_ADDR startaddr, /* offsets to line table */ | |
781 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c SS |
782 | { |
783 | unsigned int curoffset; | |
784 | CORE_ADDR addr; | |
7a78ae4e | 785 | void *ext_lnno; |
c906108c SS |
786 | struct internal_lineno int_lnno; |
787 | unsigned int limit_offset; | |
788 | bfd *abfd; | |
7a78ae4e | 789 | int linesz; |
c906108c SS |
790 | |
791 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
792 | return; | |
793 | curoffset = beginoffset; | |
794 | limit_offset = | |
c5aa993b JM |
795 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile->sym_private) |
796 | ->max_lineno_offset; | |
c906108c SS |
797 | |
798 | if (endoffset != 0) | |
799 | { | |
800 | if (endoffset >= limit_offset) | |
801 | { | |
802 | static struct complaint msg = | |
c5aa993b | 803 | {"Bad line table offset in C_EINCL directive", 0, 0}; |
c906108c SS |
804 | complain (&msg); |
805 | return; | |
806 | } | |
807 | limit_offset = endoffset; | |
808 | } | |
809 | else | |
810 | limit_offset -= 1; | |
7a78ae4e | 811 | |
c906108c | 812 | abfd = this_symtab_psymtab->objfile->obfd; |
7a78ae4e ND |
813 | linesz = coff_data (abfd)->local_linesz; |
814 | ext_lnno = alloca (linesz); | |
c906108c SS |
815 | |
816 | while (curoffset <= limit_offset) | |
817 | { | |
818 | bfd_seek (abfd, curoffset, SEEK_SET); | |
7a78ae4e ND |
819 | bfd_read (ext_lnno, linesz, 1, abfd); |
820 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); | |
c906108c SS |
821 | |
822 | /* Find the address this line represents. */ | |
823 | addr = (int_lnno.l_lnno | |
824 | ? int_lnno.l_addr.l_paddr | |
825 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
826 | addr += ANOFFSET (this_symtab_psymtab->objfile->section_offsets, | |
b8fbeb18 | 827 | SECT_OFF_TEXT (this_symtab_psymtab->objfile)); |
c906108c SS |
828 | |
829 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
830 | return; | |
831 | ||
832 | if (int_lnno.l_lnno == 0) | |
833 | { | |
834 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
835 | record_line (subfile, 0, addr); | |
836 | --(*firstLine); | |
837 | } | |
838 | else | |
839 | record_line (subfile, *firstLine + int_lnno.l_lnno, addr); | |
7a78ae4e | 840 | curoffset += linesz; |
c906108c SS |
841 | } |
842 | } | |
843 | ||
844 | ||
845 | /* Save the vital information for use when closing off the current file. | |
846 | NAME is the file name the symbols came from, START_ADDR is the first | |
847 | text address for the file, and SIZE is the number of bytes of text. */ | |
848 | ||
849 | #define complete_symtab(name, start_addr) { \ | |
850 | last_source_file = savestring (name, strlen (name)); \ | |
851 | last_source_start_addr = start_addr; \ | |
852 | } | |
853 | ||
854 | ||
855 | /* Refill the symbol table input buffer | |
856 | and set the variables that control fetching entries from it. | |
857 | Reports an error if no data available. | |
858 | This function can read past the end of the symbol table | |
859 | (into the string table) but this does no harm. */ | |
860 | ||
861 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
862 | than functions. */ | |
863 | ||
864 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \ | |
865 | { \ | |
866 | char *namestr; \ | |
867 | namestr = (NAME); \ | |
868 | if (namestr[0] == '.') ++namestr; \ | |
869 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ | |
870 | (char *)NULL, (SECTION), (asection *)NULL, (OBJFILE)); \ | |
871 | misc_func_recorded = 1; \ | |
872 | } | |
873 | ||
874 | ||
875 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be | |
876 | nested. At any given time, a symbol can only be in one static block. | |
877 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 878 | |
c906108c SS |
879 | static int static_block_base = 0; |
880 | ||
881 | /* Section number for the current static block. */ | |
882 | ||
883 | static int static_block_section = -1; | |
884 | ||
885 | /* true if space for symbol name has been allocated. */ | |
886 | ||
887 | static int symname_alloced = 0; | |
888 | ||
889 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
890 | ||
891 | static char *raw_symbol; | |
892 | ||
893 | /* This is the function which stabsread.c calls to get symbol | |
894 | continuations. */ | |
895 | ||
896 | static char * | |
fba45db2 | 897 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
898 | { |
899 | struct internal_syment symbol; | |
900 | static struct complaint msg = | |
c5aa993b | 901 | {"Unexpected symbol continuation", 0, 0}; |
c906108c SS |
902 | char *retval; |
903 | /* FIXME: is this the same as the passed arg? */ | |
904 | objfile = this_symtab_psymtab->objfile; | |
905 | ||
906 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
907 | if (symbol.n_zeroes) | |
908 | { | |
909 | complain (&msg); | |
910 | ||
911 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 912 | code does something reasonable. */ |
c906108c SS |
913 | retval = ""; |
914 | } | |
915 | else if (symbol.n_sclass & 0x80) | |
916 | { | |
917 | retval = | |
c5aa993b JM |
918 | ((struct coff_symfile_info *) objfile->sym_private)->debugsec |
919 | + symbol.n_offset; | |
c906108c SS |
920 | raw_symbol += |
921 | coff_data (objfile->obfd)->local_symesz; | |
922 | ++symnum; | |
923 | } | |
924 | else | |
925 | { | |
926 | complain (&msg); | |
927 | ||
928 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 929 | code does something reasonable. */ |
c906108c SS |
930 | retval = ""; |
931 | } | |
932 | return retval; | |
933 | } | |
934 | ||
935 | /* Read symbols for a given partial symbol table. */ | |
936 | ||
937 | static void | |
fba45db2 | 938 | read_xcoff_symtab (struct partial_symtab *pst) |
c906108c SS |
939 | { |
940 | struct objfile *objfile = pst->objfile; | |
941 | bfd *abfd = objfile->obfd; | |
942 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ | |
c5aa993b | 943 | char *strtbl = ((struct coff_symfile_info *) objfile->sym_private)->strtbl; |
c906108c | 944 | char *debugsec = |
c5aa993b | 945 | ((struct coff_symfile_info *) objfile->sym_private)->debugsec; |
7a78ae4e | 946 | char *debugfmt = xcoff_data (abfd)->xcoff64 ? "XCOFF64" : "XCOFF"; |
c906108c SS |
947 | |
948 | struct internal_syment symbol[1]; | |
949 | union internal_auxent main_aux; | |
950 | struct coff_symbol cs[1]; | |
951 | CORE_ADDR file_start_addr = 0; | |
952 | CORE_ADDR file_end_addr = 0; | |
953 | ||
954 | int next_file_symnum = -1; | |
955 | unsigned int max_symnum; | |
956 | int just_started = 1; | |
957 | int depth = 0; | |
958 | int fcn_start_addr = 0; | |
959 | ||
960 | struct coff_symbol fcn_stab_saved; | |
961 | ||
962 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ | |
963 | union internal_auxent fcn_aux_saved; | |
964 | struct context_stack *new; | |
965 | ||
966 | char *filestring = " _start_ "; /* Name of the current file. */ | |
967 | ||
c5aa993b | 968 | char *last_csect_name; /* last seen csect's name and value */ |
c906108c SS |
969 | CORE_ADDR last_csect_val; |
970 | int last_csect_sec; | |
971 | ||
972 | this_symtab_psymtab = pst; | |
973 | ||
974 | /* Get the appropriate COFF "constants" related to the file we're | |
975 | handling. */ | |
976 | local_symesz = coff_data (abfd)->local_symesz; | |
977 | ||
978 | last_source_file = NULL; | |
979 | last_csect_name = 0; | |
980 | last_csect_val = 0; | |
981 | ||
982 | start_stabs (); | |
c5aa993b | 983 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 984 | record_debugformat (debugfmt); |
c5aa993b | 985 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 986 | max_symnum = |
c5aa993b | 987 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
988 | first_object_file_end = 0; |
989 | ||
990 | raw_symbol = | |
991 | ((struct coff_symfile_info *) objfile->sym_private)->symtbl | |
c5aa993b | 992 | + symnum * local_symesz; |
c906108c SS |
993 | |
994 | while (symnum < max_symnum) | |
995 | { | |
996 | ||
997 | QUIT; /* make this command interruptable. */ | |
998 | ||
999 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
1000 | /* read one symbol into `cs' structure. After processing the | |
c5aa993b JM |
1001 | whole symbol table, only string table will be kept in memory, |
1002 | symbol table and debug section of xcoff will be freed. Thus | |
1003 | we can mark symbols with names in string table as | |
1004 | `alloced'. */ | |
c906108c SS |
1005 | { |
1006 | int ii; | |
1007 | ||
1008 | /* Swap and align the symbol into a reasonable C structure. */ | |
1009 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1010 | ||
1011 | cs->c_symnum = symnum; | |
1012 | cs->c_naux = symbol->n_numaux; | |
1013 | if (symbol->n_zeroes) | |
1014 | { | |
1015 | symname_alloced = 0; | |
1016 | /* We must use the original, unswapped, name here so the name field | |
1017 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1018 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1019 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1020 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1021 | '\0'-terminated. */ | |
1022 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1023 | { | |
1024 | char *p; | |
1025 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); | |
1026 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1027 | p[E_SYMNMLEN] = '\0'; | |
1028 | cs->c_name = p; | |
1029 | symname_alloced = 1; | |
1030 | } | |
1031 | } | |
1032 | else if (symbol->n_sclass & 0x80) | |
1033 | { | |
1034 | cs->c_name = debugsec + symbol->n_offset; | |
1035 | symname_alloced = 0; | |
1036 | } | |
1037 | else | |
1038 | { | |
1039 | /* in string table */ | |
c5aa993b | 1040 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1041 | symname_alloced = 1; |
1042 | } | |
1043 | cs->c_value = symbol->n_value; | |
1044 | cs->c_sclass = symbol->n_sclass; | |
1045 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1046 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1047 | |
7a78ae4e | 1048 | raw_symbol += local_symesz; |
c906108c SS |
1049 | ++symnum; |
1050 | ||
1051 | /* Save addr of first aux entry. */ | |
1052 | raw_auxptr = raw_symbol; | |
1053 | ||
1054 | /* Skip all the auxents associated with this symbol. */ | |
1055 | for (ii = symbol->n_numaux; ii; --ii) | |
1056 | { | |
1057 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1058 | ++symnum; | |
1059 | } | |
1060 | } | |
1061 | ||
1062 | /* if symbol name starts with ".$" or "$", ignore it. */ | |
1063 | if (cs->c_name[0] == '$' | |
1064 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1065 | continue; | |
1066 | ||
1067 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1068 | { | |
1069 | if (last_source_file) | |
1070 | { | |
1071 | pst->symtab = | |
b8fbeb18 | 1072 | end_symtab (cur_src_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1073 | end_stabs (); |
1074 | } | |
1075 | ||
1076 | start_stabs (); | |
c5aa993b | 1077 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1078 | record_debugformat (debugfmt); |
c906108c SS |
1079 | cur_src_end_addr = first_object_file_end; |
1080 | /* done with all files, everything from here on is globals */ | |
1081 | } | |
1082 | ||
1083 | /* if explicitly specified as a function, treat is as one. */ | |
c5aa993b | 1084 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) |
c906108c SS |
1085 | { |
1086 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1087 | 0, cs->c_naux, &main_aux); | |
1088 | goto function_entry_point; | |
1089 | } | |
1090 | ||
1091 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) | |
1092 | && cs->c_naux == 1) | |
1093 | { | |
1094 | /* Dealing with a symbol with a csect entry. */ | |
1095 | ||
1096 | #define CSECT(PP) ((PP)->x_csect) | |
1097 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1098 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1099 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1100 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1101 | ||
1102 | /* Convert the auxent to something we can access. */ | |
1103 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1104 | 0, cs->c_naux, &main_aux); | |
1105 | ||
1106 | switch (CSECT_SMTYP (&main_aux)) | |
1107 | { | |
1108 | ||
1109 | case XTY_ER: | |
1110 | /* Ignore all external references. */ | |
1111 | continue; | |
1112 | ||
1113 | case XTY_SD: | |
1114 | /* A section description. */ | |
1115 | { | |
1116 | switch (CSECT_SCLAS (&main_aux)) | |
1117 | { | |
1118 | ||
1119 | case XMC_PR: | |
1120 | { | |
1121 | ||
1122 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1123 | symbol table for each program csect. Normally gdb |
1124 | prefers one symtab for each source file. In case | |
1125 | of AIX, one source file might include more than one | |
1126 | [PR] csect, and they don't have to be adjacent in | |
1127 | terms of the space they occupy in memory. Thus, one | |
1128 | single source file might get fragmented in the | |
1129 | memory and gdb's file start and end address | |
1130 | approach does not work! GCC (and I think xlc) seem | |
1131 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1132 | |
1133 | if (last_csect_name) | |
1134 | { | |
1135 | complete_symtab (filestring, file_start_addr); | |
1136 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1137 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1138 | end_stabs (); |
1139 | start_stabs (); | |
1140 | /* Give all csects for this source file the same | |
1141 | name. */ | |
c5aa993b | 1142 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1143 | record_debugformat (debugfmt); |
c906108c SS |
1144 | } |
1145 | ||
1146 | /* If this is the very first csect seen, | |
c5aa993b | 1147 | basically `__start'. */ |
c906108c SS |
1148 | if (just_started) |
1149 | { | |
1150 | first_object_file_end | |
1151 | = cs->c_value + CSECT_LEN (&main_aux); | |
1152 | just_started = 0; | |
1153 | } | |
1154 | ||
1155 | file_start_addr = | |
1156 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1157 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1158 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1159 | ||
1160 | if (cs->c_name && cs->c_name[0] == '.') | |
1161 | { | |
1162 | last_csect_name = cs->c_name; | |
1163 | last_csect_val = cs->c_value; | |
1164 | last_csect_sec = secnum_to_section (cs->c_secnum, objfile); | |
1165 | } | |
1166 | } | |
1167 | continue; | |
1168 | ||
1169 | /* All other symbols are put into the minimal symbol | |
1170 | table only. */ | |
1171 | ||
1172 | case XMC_RW: | |
1173 | continue; | |
1174 | ||
1175 | case XMC_TC0: | |
1176 | continue; | |
1177 | ||
1178 | case XMC_TC: | |
1179 | continue; | |
1180 | ||
1181 | default: | |
1182 | /* Ignore the symbol. */ | |
1183 | continue; | |
1184 | } | |
1185 | } | |
1186 | break; | |
1187 | ||
1188 | case XTY_LD: | |
1189 | ||
1190 | switch (CSECT_SCLAS (&main_aux)) | |
1191 | { | |
1192 | case XMC_PR: | |
1193 | /* a function entry point. */ | |
1194 | function_entry_point: | |
1195 | ||
1196 | fcn_start_addr = cs->c_value; | |
1197 | ||
1198 | /* save the function header info, which will be used | |
1199 | when `.bf' is seen. */ | |
1200 | fcn_cs_saved = *cs; | |
1201 | fcn_aux_saved = main_aux; | |
1202 | continue; | |
1203 | ||
1204 | case XMC_GL: | |
1205 | /* shared library function trampoline code entry point. */ | |
1206 | continue; | |
1207 | ||
1208 | case XMC_DS: | |
1209 | /* The symbols often have the same names as debug symbols for | |
1210 | functions, and confuse lookup_symbol. */ | |
1211 | continue; | |
1212 | ||
1213 | default: | |
1214 | /* xlc puts each variable in a separate csect, so we get | |
1215 | an XTY_SD for each variable. But gcc puts several | |
1216 | variables in a csect, so that each variable only gets | |
1217 | an XTY_LD. This will typically be XMC_RW; I suspect | |
1218 | XMC_RO and XMC_BS might be possible too. | |
1219 | These variables are put in the minimal symbol table | |
1220 | only. */ | |
1221 | continue; | |
1222 | } | |
1223 | break; | |
1224 | ||
1225 | case XTY_CM: | |
1226 | /* Common symbols are put into the minimal symbol table only. */ | |
1227 | continue; | |
1228 | ||
1229 | default: | |
1230 | break; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | switch (cs->c_sclass) | |
1235 | { | |
1236 | ||
1237 | case C_FILE: | |
1238 | ||
1239 | /* c_value field contains symnum of next .file entry in table | |
1240 | or symnum of first global after last .file. */ | |
1241 | ||
1242 | next_file_symnum = cs->c_value; | |
1243 | ||
1244 | /* Complete symbol table for last object file containing | |
1245 | debugging information. */ | |
1246 | ||
1247 | /* Whether or not there was a csect in the previous file, we | |
1248 | have to call `end_stabs' and `start_stabs' to reset | |
1249 | type_vector, line_vector, etc. structures. */ | |
1250 | ||
1251 | complete_symtab (filestring, file_start_addr); | |
1252 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1253 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1254 | end_stabs (); |
1255 | ||
1256 | /* XCOFF, according to the AIX 3.2 documentation, puts the filename | |
1257 | in cs->c_name. But xlc 1.3.0.2 has decided to do things the | |
1258 | standard COFF way and put it in the auxent. We use the auxent if | |
1259 | the symbol is ".file" and an auxent exists, otherwise use the symbol | |
1260 | itself. Simple enough. */ | |
1261 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) | |
1262 | { | |
1263 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1264 | 0, cs->c_naux, &main_aux); | |
1265 | filestring = coff_getfilename (&main_aux, objfile); | |
1266 | } | |
1267 | else | |
1268 | filestring = cs->c_name; | |
1269 | ||
1270 | start_stabs (); | |
c5aa993b | 1271 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1272 | record_debugformat (debugfmt); |
c906108c SS |
1273 | last_csect_name = 0; |
1274 | ||
1275 | /* reset file start and end addresses. A compilation unit with no text | |
1276 | (only data) should have zero file boundaries. */ | |
1277 | file_start_addr = file_end_addr = 0; | |
1278 | break; | |
1279 | ||
1280 | case C_FUN: | |
1281 | fcn_stab_saved = *cs; | |
1282 | break; | |
1283 | ||
1284 | case C_FCN: | |
1285 | if (STREQ (cs->c_name, ".bf")) | |
1286 | { | |
1287 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1288 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1289 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1290 | 0, cs->c_naux, &main_aux); | |
1291 | ||
1292 | within_function = 1; | |
1293 | ||
1294 | new = push_context (0, fcn_start_addr + off); | |
1295 | ||
c5aa993b | 1296 | new->name = define_symbol |
c906108c SS |
1297 | (fcn_cs_saved.c_value + off, |
1298 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1299 | if (new->name != NULL) | |
b8fbeb18 | 1300 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c SS |
1301 | } |
1302 | else if (STREQ (cs->c_name, ".ef")) | |
1303 | { | |
1304 | ||
1305 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1306 | 0, cs->c_naux, &main_aux); | |
1307 | ||
1308 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1309 | not useful for gdb. */ |
c906108c | 1310 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1311 | contains number of lines to '}' */ |
c906108c SS |
1312 | |
1313 | if (context_stack_depth <= 0) | |
1314 | { /* We attempted to pop an empty context stack */ | |
1315 | complain (&ef_complaint, cs->c_symnum); | |
1316 | within_function = 0; | |
1317 | break; | |
1318 | } | |
1319 | new = pop_context (); | |
1320 | /* Stack must be empty now. */ | |
1321 | if (context_stack_depth > 0 || new == NULL) | |
1322 | { | |
1323 | complain (&ef_complaint, cs->c_symnum); | |
1324 | within_function = 0; | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1329 | new->start_addr, | |
1330 | (fcn_cs_saved.c_value | |
1331 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1332 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1333 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1334 | objfile); |
1335 | within_function = 0; | |
1336 | } | |
1337 | break; | |
1338 | ||
1339 | case C_BSTAT: | |
1340 | /* Begin static block. */ | |
1341 | { | |
1342 | struct internal_syment symbol; | |
1343 | ||
1344 | read_symbol (&symbol, cs->c_value); | |
1345 | static_block_base = symbol.n_value; | |
1346 | static_block_section = | |
1347 | secnum_to_section (symbol.n_scnum, objfile); | |
1348 | } | |
1349 | break; | |
1350 | ||
1351 | case C_ESTAT: | |
1352 | /* End of static block. */ | |
1353 | static_block_base = 0; | |
1354 | static_block_section = -1; | |
1355 | break; | |
1356 | ||
1357 | case C_ARG: | |
1358 | case C_REGPARM: | |
1359 | case C_REG: | |
1360 | case C_TPDEF: | |
1361 | case C_STRTAG: | |
1362 | case C_UNTAG: | |
1363 | case C_ENTAG: | |
1364 | { | |
1365 | static struct complaint msg = | |
c5aa993b | 1366 | {"Unrecognized storage class %d.", 0, 0}; |
c906108c SS |
1367 | complain (&msg, cs->c_sclass); |
1368 | } | |
1369 | break; | |
1370 | ||
1371 | case C_LABEL: | |
1372 | case C_NULL: | |
1373 | /* Ignore these. */ | |
1374 | break; | |
1375 | ||
1376 | case C_HIDEXT: | |
1377 | case C_STAT: | |
1378 | break; | |
1379 | ||
1380 | case C_BINCL: | |
1381 | /* beginning of include file */ | |
1382 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1383 | order. Thus, when wee see them, we might not know enough info | |
1384 | to process them. Thus, we'll be saving them into a table | |
1385 | (inclTable) and postpone their processing. */ | |
1386 | ||
1387 | record_include_begin (cs); | |
1388 | break; | |
1389 | ||
1390 | case C_EINCL: | |
1391 | /* End of include file. */ | |
1392 | /* See the comment after case C_BINCL. */ | |
1393 | record_include_end (cs); | |
1394 | break; | |
1395 | ||
1396 | case C_BLOCK: | |
1397 | if (STREQ (cs->c_name, ".bb")) | |
1398 | { | |
1399 | depth++; | |
1400 | new = push_context (depth, | |
1401 | (cs->c_value | |
1402 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1403 | SECT_OFF_TEXT (objfile)))); |
c906108c SS |
1404 | } |
1405 | else if (STREQ (cs->c_name, ".eb")) | |
1406 | { | |
1407 | if (context_stack_depth <= 0) | |
1408 | { /* We attempted to pop an empty context stack */ | |
1409 | complain (&eb_complaint, cs->c_symnum); | |
1410 | break; | |
1411 | } | |
1412 | new = pop_context (); | |
1413 | if (depth-- != new->depth) | |
1414 | { | |
1415 | complain (&eb_complaint, cs->c_symnum); | |
1416 | break; | |
1417 | } | |
1418 | if (local_symbols && context_stack_depth > 0) | |
1419 | { | |
1420 | /* Make a block for the local symbols within. */ | |
1421 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1422 | new->start_addr, | |
1423 | (cs->c_value | |
1424 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1425 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1426 | objfile); |
1427 | } | |
1428 | local_symbols = new->locals; | |
1429 | } | |
1430 | break; | |
1431 | ||
1432 | default: | |
1433 | process_xcoff_symbol (cs, objfile); | |
1434 | break; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | if (last_source_file) | |
1439 | { | |
1440 | struct symtab *s; | |
1441 | ||
1442 | complete_symtab (filestring, file_start_addr); | |
1443 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1444 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1445 | /* When reading symbols for the last C_FILE of the objfile, try |
1446 | to make sure that we set pst->symtab to the symtab for the | |
1447 | file, not to the _globals_ symtab. I'm not sure whether this | |
1448 | actually works right or when/if it comes up. */ | |
1449 | if (pst->symtab == NULL) | |
1450 | pst->symtab = s; | |
1451 | end_stabs (); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1456 | (SYMBOL2) = (struct symbol *) \ | |
1457 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ | |
1458 | *(SYMBOL2) = *(SYMBOL1); | |
c5aa993b JM |
1459 | |
1460 | ||
c906108c SS |
1461 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
1462 | (ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), &objfile->symbol_obstack); | |
1463 | ||
1464 | ||
1465 | static struct type *func_symbol_type; | |
1466 | static struct type *var_symbol_type; | |
1467 | ||
1468 | /* process one xcoff symbol. */ | |
1469 | ||
1470 | static struct symbol * | |
fba45db2 | 1471 | process_xcoff_symbol (register struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1472 | { |
1473 | struct symbol onesymbol; | |
1474 | register struct symbol *sym = &onesymbol; | |
1475 | struct symbol *sym2 = NULL; | |
1476 | char *name, *pp; | |
1477 | ||
1478 | int sec; | |
1479 | CORE_ADDR off; | |
1480 | ||
1481 | if (cs->c_secnum < 0) | |
1482 | { | |
1483 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1484 | and does not get relocated. */ |
c906108c SS |
1485 | off = 0; |
1486 | sec = -1; | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1491 | off = ANOFFSET (objfile->section_offsets, sec); | |
1492 | } | |
1493 | ||
1494 | name = cs->c_name; | |
1495 | if (name[0] == '.') | |
1496 | ++name; | |
1497 | ||
1498 | memset (sym, '\0', sizeof (struct symbol)); | |
1499 | ||
1500 | /* default assumptions */ | |
7a78ae4e | 1501 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
c906108c SS |
1502 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
1503 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); | |
1504 | ||
1505 | if (ISFCN (cs->c_type)) | |
1506 | { | |
1507 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1508 | will be patched with the type from its stab entry later on in |
1509 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c SS |
1510 | |
1511 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); | |
1512 | SYMBOL_TYPE (sym) = func_symbol_type; | |
1513 | ||
1514 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1515 | SYMBOL_DUP (sym, sym2); | |
1516 | ||
1517 | if (cs->c_sclass == C_EXT) | |
1518 | add_symbol_to_list (sym2, &global_symbols); | |
1519 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1520 | add_symbol_to_list (sym2, &file_symbols); | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | /* In case we can't figure out the type, provide default. */ | |
1525 | SYMBOL_TYPE (sym) = var_symbol_type; | |
1526 | ||
1527 | switch (cs->c_sclass) | |
1528 | { | |
1529 | #if 0 | |
c5aa993b JM |
1530 | /* The values of functions and global symbols are now resolved |
1531 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1532 | case C_FUN: |
1533 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1534 | add_stab_to_list (name, &global_stabs); | |
1535 | else | |
1536 | add_stab_to_list (name, &file_stabs); | |
1537 | break; | |
1538 | ||
1539 | case C_GSYM: | |
1540 | add_stab_to_list (name, &global_stabs); | |
1541 | break; | |
1542 | #endif | |
1543 | ||
1544 | case C_BCOMM: | |
1545 | common_block_start (cs->c_name, objfile); | |
1546 | break; | |
1547 | ||
1548 | case C_ECOMM: | |
1549 | common_block_end (objfile); | |
1550 | break; | |
1551 | ||
1552 | default: | |
1553 | complain (&storclass_complaint, cs->c_sclass); | |
1554 | /* FALLTHROUGH */ | |
1555 | ||
1556 | case C_DECL: | |
1557 | case C_PSYM: | |
1558 | case C_RPSYM: | |
1559 | case C_ECOML: | |
1560 | case C_LSYM: | |
1561 | case C_RSYM: | |
1562 | case C_GSYM: | |
1563 | ||
1564 | { | |
1565 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1566 | if (sym != NULL) | |
1567 | { | |
1568 | SYMBOL_SECTION (sym) = sec; | |
1569 | } | |
1570 | return sym; | |
1571 | } | |
1572 | ||
1573 | case C_STSYM: | |
1574 | ||
1575 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1576 | all statics and we need to distinguish file-scope versus | |
1577 | function-scope using within_function. We do this by | |
1578 | changing the string we pass to define_symbol to use 'S' | |
1579 | where we need to, which is not necessarily super-clean, | |
1580 | but seems workable enough. */ | |
1581 | ||
c5aa993b | 1582 | if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL) |
c906108c SS |
1583 | return NULL; |
1584 | ||
1585 | ++pp; | |
1586 | if (*pp == 'V' && !within_function) | |
1587 | *pp = 'S'; | |
1588 | sym = define_symbol ((cs->c_value | |
1589 | + ANOFFSET (objfile->section_offsets, | |
1590 | static_block_section)), | |
1591 | cs->c_name, 0, 0, objfile); | |
1592 | if (sym != NULL) | |
1593 | { | |
7a78ae4e | 1594 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1595 | SYMBOL_SECTION (sym) = static_block_section; |
1596 | } | |
1597 | return sym; | |
1598 | ||
1599 | } | |
1600 | } | |
1601 | return sym2; | |
1602 | } | |
1603 | ||
1604 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1605 | Result is in static storage and is only good for temporary use. */ | |
1606 | ||
1607 | static char * | |
fba45db2 | 1608 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1609 | { |
1610 | static char buffer[BUFSIZ]; | |
1611 | ||
1612 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
1613 | strcpy (buffer, | |
c5aa993b | 1614 | ((struct coff_symfile_info *) objfile->sym_private)->strtbl |
c906108c SS |
1615 | + aux_entry->x_file.x_n.x_offset); |
1616 | else | |
1617 | { | |
1618 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1619 | buffer[FILNMLEN] = '\0'; | |
1620 | } | |
1621 | return (buffer); | |
1622 | } | |
1623 | ||
1624 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1625 | static void | |
fba45db2 | 1626 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c SS |
1627 | { |
1628 | int nsyms = | |
c5aa993b JM |
1629 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile->sym_private) |
1630 | ->symtbl_num_syms; | |
1631 | char *stbl = | |
1632 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile->sym_private) | |
1633 | ->symtbl; | |
c906108c SS |
1634 | if (symno < 0 || symno >= nsyms) |
1635 | { | |
1636 | static struct complaint msg = | |
c5aa993b | 1637 | {"Invalid symbol offset", 0, 0}; |
c906108c SS |
1638 | complain (&msg); |
1639 | symbol->n_value = 0; | |
1640 | symbol->n_scnum = -1; | |
1641 | return; | |
1642 | } | |
1643 | bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd, | |
c5aa993b | 1644 | stbl + (symno * local_symesz), |
c906108c SS |
1645 | symbol); |
1646 | } | |
c5aa993b | 1647 | |
c906108c SS |
1648 | /* Get value corresponding to symbol number symno in symtbl. */ |
1649 | ||
470d5666 | 1650 | static CORE_ADDR |
fba45db2 | 1651 | read_symbol_nvalue (int symno) |
c906108c SS |
1652 | { |
1653 | struct internal_syment symbol[1]; | |
1654 | ||
1655 | read_symbol (symbol, symno); | |
c5aa993b | 1656 | return symbol->n_value; |
c906108c SS |
1657 | } |
1658 | ||
1659 | ||
1660 | /* Find the address of the function corresponding to symno, where | |
1661 | symno is the symbol pointed to by the linetable. */ | |
1662 | ||
1663 | static int | |
fba45db2 | 1664 | read_symbol_lineno (int symno) |
c906108c | 1665 | { |
7a78ae4e ND |
1666 | struct objfile *objfile = this_symtab_psymtab->objfile; |
1667 | boolean xcoff64 = xcoff_data (objfile->obfd)->xcoff64; | |
1668 | ||
1669 | struct coff_symfile_info *info = | |
1670 | (struct coff_symfile_info *)objfile->sym_private; | |
1671 | int nsyms = info->symtbl_num_syms; | |
1672 | char *stbl = info->symtbl; | |
1673 | char *strtbl = info->strtbl; | |
1674 | ||
c906108c SS |
1675 | struct internal_syment symbol[1]; |
1676 | union internal_auxent main_aux[1]; | |
1677 | ||
1678 | if (symno < 0) | |
1679 | { | |
1680 | complain (&bf_notfound_complaint); | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1685 | is not enough, at least in the following case. | |
1686 | ||
1687 | .extern foo | |
1688 | [many .stabx entries] | |
1689 | [a few functions, referring to foo] | |
1690 | .globl foo | |
1691 | .bf | |
1692 | ||
1693 | What happens here is that the assembler moves the .stabx entries | |
1694 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1695 | all the stabx entries. See PR gdb/2222. */ | |
1696 | ||
1697 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1698 | If I understand things correctly it would need to be done only for | |
1699 | the duration of a single psymtab to symtab conversion. */ | |
1700 | while (symno < nsyms) | |
1701 | { | |
1702 | bfd_coff_swap_sym_in (symfile_bfd, | |
1703 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1704 | if (symbol->n_sclass == C_FCN) |
1705 | { | |
1706 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
1707 | if (STREQ (name, ".bf")) | |
1708 | goto gotit; | |
1709 | } | |
c906108c SS |
1710 | symno += symbol->n_numaux + 1; |
1711 | } | |
1712 | ||
1713 | complain (&bf_notfound_complaint); | |
1714 | return 0; | |
1715 | ||
1716 | gotit: | |
1717 | /* take aux entry and return its lineno */ | |
1718 | symno++; | |
7a78ae4e | 1719 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1720 | symbol->n_type, symbol->n_sclass, |
1721 | 0, symbol->n_numaux, main_aux); | |
1722 | ||
1723 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1724 | } | |
1725 | ||
1726 | /* Support for line number handling */ | |
1727 | ||
1728 | /* This function is called for every section; it finds the outer limits | |
1729 | * of the line table (minimum and maximum file offset) so that the | |
1730 | * mainline code can read the whole thing for efficiency. | |
1731 | */ | |
1732 | static void | |
fba45db2 | 1733 | find_linenos (bfd *abfd, sec_ptr asect, PTR vpinfo) |
c906108c SS |
1734 | { |
1735 | struct coff_symfile_info *info; | |
1736 | int size, count; | |
1737 | file_ptr offset, maxoff; | |
1738 | ||
1739 | count = asect->lineno_count; | |
1740 | ||
1741 | if (!STREQ (asect->name, ".text") || count == 0) | |
1742 | return; | |
1743 | ||
1744 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1745 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1746 | offset = asect->line_filepos; |
1747 | maxoff = offset + size; | |
1748 | ||
1749 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1750 | info->min_lineno_offset = offset; | |
1751 | ||
1752 | if (maxoff > info->max_lineno_offset) | |
1753 | info->max_lineno_offset = maxoff; | |
1754 | } | |
1755 | \f | |
a14ed312 | 1756 | static void xcoff_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c SS |
1757 | |
1758 | static void | |
fba45db2 | 1759 | xcoff_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1760 | { |
1761 | struct cleanup *old_chain; | |
1762 | int i; | |
c5aa993b | 1763 | |
c906108c SS |
1764 | if (!pst) |
1765 | return; | |
1766 | ||
1767 | if (pst->readin) | |
1768 | { | |
1769 | fprintf_unfiltered | |
1770 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1771 | pst->filename); | |
1772 | return; | |
1773 | } | |
1774 | ||
1775 | /* Read in all partial symtabs on which this one is dependent */ | |
1776 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1777 | if (!pst->dependencies[i]->readin) | |
1778 | { | |
1779 | /* Inform about additional files that need to be read in. */ | |
1780 | if (info_verbose) | |
1781 | { | |
1782 | fputs_filtered (" ", gdb_stdout); | |
1783 | wrap_here (""); | |
1784 | fputs_filtered ("and ", gdb_stdout); | |
1785 | wrap_here (""); | |
1786 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1787 | wrap_here (""); /* Flush output */ |
c906108c SS |
1788 | gdb_flush (gdb_stdout); |
1789 | } | |
1790 | xcoff_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1791 | } | |
1792 | ||
c5aa993b | 1793 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1794 | { |
1795 | /* Init stuff necessary for reading in symbols. */ | |
1796 | stabsread_init (); | |
1797 | buildsym_init (); | |
a0b3c4fd | 1798 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1799 | |
1800 | read_xcoff_symtab (pst); | |
1801 | sort_symtab_syms (pst->symtab); | |
1802 | ||
1803 | do_cleanups (old_chain); | |
1804 | } | |
1805 | ||
1806 | pst->readin = 1; | |
1807 | } | |
1808 | ||
a14ed312 | 1809 | static void xcoff_psymtab_to_symtab (struct partial_symtab *); |
c906108c SS |
1810 | |
1811 | /* Read in all of the symbols for a given psymtab for real. | |
1812 | Be verbose about it if the user wants that. */ | |
1813 | ||
1814 | static void | |
fba45db2 | 1815 | xcoff_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1816 | { |
1817 | bfd *sym_bfd; | |
1818 | ||
1819 | if (!pst) | |
1820 | return; | |
1821 | ||
1822 | if (pst->readin) | |
1823 | { | |
1824 | fprintf_unfiltered | |
1825 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1826 | pst->filename); | |
1827 | return; | |
1828 | } | |
1829 | ||
c5aa993b | 1830 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0 |
c906108c SS |
1831 | || pst->number_of_dependencies) |
1832 | { | |
1833 | /* Print the message now, before reading the string table, | |
c5aa993b | 1834 | to avoid disconcerting pauses. */ |
c906108c SS |
1835 | if (info_verbose) |
1836 | { | |
1837 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1838 | gdb_flush (gdb_stdout); | |
1839 | } | |
1840 | ||
1841 | sym_bfd = pst->objfile->obfd; | |
1842 | ||
1843 | next_symbol_text_func = xcoff_next_symbol_text; | |
1844 | ||
1845 | xcoff_psymtab_to_symtab_1 (pst); | |
1846 | ||
1847 | /* Match with global symbols. This only needs to be done once, | |
1848 | after all of the symtabs and dependencies have been read in. */ | |
1849 | scan_file_globals (pst->objfile); | |
1850 | ||
1851 | /* Finish up the debug error message. */ | |
1852 | if (info_verbose) | |
1853 | printf_filtered ("done.\n"); | |
1854 | } | |
1855 | } | |
1856 | \f | |
1857 | static void | |
fba45db2 | 1858 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1859 | { |
1860 | stabsread_new_init (); | |
1861 | buildsym_new_init (); | |
1862 | } | |
1863 | ||
1864 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1865 | |
c906108c SS |
1866 | We will only be called if this is an XCOFF or XCOFF-like file. |
1867 | BFD handles figuring out the format of the file, and code in symfile.c | |
1868 | uses BFD's determination to vector to us. */ | |
1869 | ||
1870 | static void | |
fba45db2 | 1871 | xcoff_symfile_init (struct objfile *objfile) |
c906108c SS |
1872 | { |
1873 | /* Allocate struct to keep track of the symfile */ | |
c5aa993b JM |
1874 | objfile->sym_private = xmmalloc (objfile->md, |
1875 | sizeof (struct coff_symfile_info)); | |
c906108c SS |
1876 | |
1877 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1878 | find this causes a significant slowdown in gdb then we could | |
1879 | set it in the debug symbol readers only when necessary. */ | |
1880 | objfile->flags |= OBJF_REORDERED; | |
1881 | ||
1882 | init_entry_point_info (objfile); | |
1883 | } | |
1884 | ||
1885 | /* Perform any local cleanups required when we are done with a particular | |
1886 | objfile. I.E, we are in the process of discarding all symbol information | |
1887 | for an objfile, freeing up all memory held for it, and unlinking the | |
1888 | objfile struct from the global list of known objfiles. */ | |
1889 | ||
1890 | static void | |
fba45db2 | 1891 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1892 | { |
c5aa993b | 1893 | if (objfile->sym_private != NULL) |
c906108c | 1894 | { |
c5aa993b | 1895 | mfree (objfile->md, objfile->sym_private); |
c906108c SS |
1896 | } |
1897 | ||
1898 | /* Start with a fresh include table for the next objfile. */ | |
1899 | if (inclTable) | |
1900 | { | |
b8c9b27d | 1901 | xfree (inclTable); |
c906108c SS |
1902 | inclTable = NULL; |
1903 | } | |
1904 | inclIndx = inclLength = inclDepth = 0; | |
1905 | } | |
1906 | ||
1907 | ||
1908 | static void | |
fba45db2 | 1909 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1910 | { |
1911 | long length; | |
1912 | int val; | |
1913 | unsigned char lengthbuf[4]; | |
1914 | char *strtbl; | |
1915 | ||
c5aa993b | 1916 | ((struct coff_symfile_info *) objfile->sym_private)->strtbl = NULL; |
c906108c SS |
1917 | |
1918 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
1919 | error ("cannot seek to string table in %s: %s", | |
1920 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1921 | ||
c5aa993b | 1922 | val = bfd_read ((char *) lengthbuf, 1, sizeof lengthbuf, abfd); |
c906108c SS |
1923 | length = bfd_h_get_32 (abfd, lengthbuf); |
1924 | ||
1925 | /* If no string table is needed, then the file may end immediately | |
1926 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1927 | ||
1928 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1929 | return; | |
1930 | ||
1931 | /* Allocate string table from symbol_obstack. We will need this table | |
1932 | as long as we have its symbol table around. */ | |
1933 | ||
1934 | strtbl = (char *) obstack_alloc (&objfile->symbol_obstack, length); | |
c5aa993b | 1935 | ((struct coff_symfile_info *) objfile->sym_private)->strtbl = strtbl; |
c906108c SS |
1936 | |
1937 | /* Copy length buffer, the first byte is usually zero and is | |
1938 | used for stabs with a name length of zero. */ | |
1939 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1940 | if (length == sizeof lengthbuf) | |
1941 | return; | |
1942 | ||
1943 | val = bfd_read (strtbl + sizeof lengthbuf, 1, length - sizeof lengthbuf, | |
1944 | abfd); | |
1945 | ||
1946 | if (val != length - sizeof lengthbuf) | |
1947 | error ("cannot read string table from %s: %s", | |
1948 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1949 | if (strtbl[length - 1] != '\0') | |
1950 | error ("bad symbol file: string table does not end with null character"); | |
1951 | ||
1952 | return; | |
1953 | } | |
1954 | \f | |
1955 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1956 | have seen one, it is the offset in the line numbers of the line numbers | |
1957 | for the psymtab. */ | |
1958 | static unsigned int first_fun_line_offset; | |
1959 | ||
1960 | static struct partial_symtab *xcoff_start_psymtab | |
a14ed312 KB |
1961 | (struct objfile *, char *, int, |
1962 | struct partial_symbol **, struct partial_symbol **); | |
c906108c SS |
1963 | |
1964 | /* Allocate and partially fill a partial symtab. It will be | |
1965 | completely filled at the end of the symbol list. | |
1966 | ||
1967 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1968 | is the address relative to which its symbols are (incremental) or 0 | |
1969 | (normal). */ | |
1970 | ||
1971 | static struct partial_symtab * | |
fba45db2 KB |
1972 | xcoff_start_psymtab (struct objfile *objfile, char *filename, int first_symnum, |
1973 | struct partial_symbol **global_syms, | |
1974 | struct partial_symbol **static_syms) | |
c906108c SS |
1975 | { |
1976 | struct partial_symtab *result = | |
d4f3574e | 1977 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 1978 | filename, |
d4f3574e | 1979 | /* We fill in textlow later. */ |
c5aa993b JM |
1980 | 0, |
1981 | global_syms, static_syms); | |
c906108c SS |
1982 | |
1983 | result->read_symtab_private = (char *) | |
c5aa993b JM |
1984 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); |
1985 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; | |
c906108c SS |
1986 | result->read_symtab = xcoff_psymtab_to_symtab; |
1987 | ||
1988 | /* Deduce the source language from the filename for this psymtab. */ | |
1989 | psymtab_language = deduce_language_from_filename (filename); | |
1990 | ||
1991 | return result; | |
1992 | } | |
1993 | ||
1994 | static struct partial_symtab *xcoff_end_psymtab | |
a14ed312 KB |
1995 | (struct partial_symtab *, char **, int, int, |
1996 | struct partial_symtab **, int, int); | |
c906108c SS |
1997 | |
1998 | /* Close off the current usage of PST. | |
1999 | Returns PST, or NULL if the partial symtab was empty and thrown away. | |
2000 | ||
2001 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2002 | ||
2003 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2004 | are the information for includes and dependencies. */ | |
2005 | ||
2006 | static struct partial_symtab * | |
fba45db2 KB |
2007 | xcoff_end_psymtab (struct partial_symtab *pst, char **include_list, |
2008 | int num_includes, int capping_symbol_number, | |
2009 | struct partial_symtab **dependency_list, | |
2010 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2011 | { |
2012 | int i; | |
c5aa993b | 2013 | struct objfile *objfile = pst->objfile; |
c906108c SS |
2014 | |
2015 | if (capping_symbol_number != -1) | |
c5aa993b | 2016 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2017 | capping_symbol_number |
c5aa993b JM |
2018 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2019 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2020 | first_fun_line_offset; |
2021 | first_fun_line_offset = 0; | |
2022 | pst->n_global_syms = | |
2023 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2024 | pst->n_static_syms = | |
2025 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2026 | ||
2027 | pst->number_of_dependencies = number_dependencies; | |
2028 | if (number_dependencies) | |
2029 | { | |
2030 | pst->dependencies = (struct partial_symtab **) | |
2031 | obstack_alloc (&objfile->psymbol_obstack, | |
c5aa993b | 2032 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2033 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2034 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2035 | } |
2036 | else | |
2037 | pst->dependencies = 0; | |
2038 | ||
2039 | for (i = 0; i < num_includes; i++) | |
2040 | { | |
2041 | struct partial_symtab *subpst = | |
c5aa993b | 2042 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2043 | |
2044 | subpst->section_offsets = pst->section_offsets; | |
2045 | subpst->read_symtab_private = | |
c5aa993b JM |
2046 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
2047 | sizeof (struct symloc)); | |
2048 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; | |
2049 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2050 | subpst->textlow = 0; |
2051 | subpst->texthigh = 0; | |
2052 | ||
2053 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2054 | shared by the entire set of include files. FIXME-someday. */ |
c906108c SS |
2055 | subpst->dependencies = (struct partial_symtab **) |
2056 | obstack_alloc (&objfile->psymbol_obstack, | |
2057 | sizeof (struct partial_symtab *)); | |
2058 | subpst->dependencies[0] = pst; | |
2059 | subpst->number_of_dependencies = 1; | |
2060 | ||
2061 | subpst->globals_offset = | |
2062 | subpst->n_global_syms = | |
c5aa993b JM |
2063 | subpst->statics_offset = |
2064 | subpst->n_static_syms = 0; | |
c906108c SS |
2065 | |
2066 | subpst->readin = 0; | |
2067 | subpst->symtab = 0; | |
2068 | subpst->read_symtab = pst->read_symtab; | |
2069 | } | |
2070 | ||
2071 | sort_pst_symbols (pst); | |
2072 | ||
2073 | /* If there is already a psymtab or symtab for a file of this name, | |
2074 | remove it. (If there is a symtab, more drastic things also | |
2075 | happen.) This happens in VxWorks. */ | |
2076 | free_named_symtabs (pst->filename); | |
2077 | ||
2078 | if (num_includes == 0 | |
2079 | && number_dependencies == 0 | |
2080 | && pst->n_global_syms == 0 | |
2081 | && pst->n_static_syms == 0) | |
2082 | { | |
2083 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2084 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2085 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2086 | any symbols in them. There can be a lot of them. */ |
c906108c SS |
2087 | |
2088 | discard_psymtab (pst); | |
2089 | ||
2090 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2091 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2092 | } |
2093 | return pst; | |
2094 | } | |
2095 | ||
a14ed312 KB |
2096 | static void swap_sym (struct internal_syment *, |
2097 | union internal_auxent *, char **, char **, | |
2098 | unsigned int *, struct objfile *); | |
c906108c SS |
2099 | |
2100 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in | |
2101 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2102 | the symbol and its auxents. */ | |
2103 | ||
2104 | static void | |
fba45db2 KB |
2105 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
2106 | char **name, char **raw, unsigned int *symnump, | |
2107 | struct objfile *objfile) | |
c906108c SS |
2108 | { |
2109 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2110 | if (symbol->n_zeroes) | |
2111 | { | |
2112 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2113 | '\0'-terminated. */ |
c906108c SS |
2114 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2115 | { | |
2116 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2117 | into the minimal symbols. */ | |
2118 | char *p; | |
2119 | p = obstack_alloc (&objfile->psymbol_obstack, E_SYMNMLEN + 1); | |
2120 | strncpy (p, symbol->n_name, E_SYMNMLEN); | |
2121 | p[E_SYMNMLEN] = '\0'; | |
2122 | *name = p; | |
2123 | } | |
2124 | else | |
2125 | /* Point to the unswapped name as that persists as long as the | |
2126 | objfile does. */ | |
c5aa993b | 2127 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2128 | } |
2129 | else if (symbol->n_sclass & 0x80) | |
2130 | { | |
c5aa993b | 2131 | *name = ((struct coff_symfile_info *) objfile->sym_private)->debugsec |
c906108c SS |
2132 | + symbol->n_offset; |
2133 | } | |
2134 | else | |
2135 | { | |
c5aa993b | 2136 | *name = ((struct coff_symfile_info *) objfile->sym_private)->strtbl |
c906108c SS |
2137 | + symbol->n_offset; |
2138 | } | |
2139 | ++*symnump; | |
2140 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2141 | if (symbol->n_numaux > 0) | |
2142 | { | |
2143 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2144 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2145 | ||
2146 | *symnump += symbol->n_numaux; | |
2147 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | static void | |
fba45db2 | 2152 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2153 | { |
c5aa993b | 2154 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
c906108c SS |
2155 | char *filestring = NULL; |
2156 | ||
2157 | char *namestring; | |
2158 | int past_first_source_file = 0; | |
2159 | bfd *abfd; | |
2160 | asection *bfd_sect; | |
2161 | unsigned int nsyms; | |
2162 | ||
2163 | /* Current partial symtab */ | |
2164 | struct partial_symtab *pst; | |
2165 | ||
2166 | /* List of current psymtab's include files */ | |
2167 | char **psymtab_include_list; | |
2168 | int includes_allocated; | |
2169 | int includes_used; | |
2170 | ||
2171 | /* Index within current psymtab dependency list */ | |
2172 | struct partial_symtab **dependency_list; | |
2173 | int dependencies_used, dependencies_allocated; | |
2174 | ||
2175 | char *sraw_symbol; | |
2176 | struct internal_syment symbol; | |
96baa820 | 2177 | union internal_auxent main_aux[5]; |
c906108c SS |
2178 | unsigned int ssymnum; |
2179 | ||
c5aa993b | 2180 | char *last_csect_name = NULL; /* last seen csect's name and value */ |
c906108c SS |
2181 | CORE_ADDR last_csect_val = 0; |
2182 | int last_csect_sec = 0; | |
c5aa993b | 2183 | int misc_func_recorded = 0; /* true if any misc. function */ |
c906108c SS |
2184 | int textlow_not_set = 1; |
2185 | ||
2186 | pst = (struct partial_symtab *) 0; | |
2187 | ||
2188 | includes_allocated = 30; | |
2189 | includes_used = 0; | |
2190 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2191 | sizeof (char *)); | |
2192 | ||
2193 | dependencies_allocated = 30; | |
2194 | dependencies_used = 0; | |
2195 | dependency_list = | |
2196 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2197 | sizeof (struct partial_symtab *)); | |
2198 | ||
2199 | last_source_file = NULL; | |
2200 | ||
2201 | abfd = objfile->obfd; | |
2202 | ||
c5aa993b JM |
2203 | sraw_symbol = ((struct coff_symfile_info *) objfile->sym_private)->symtbl; |
2204 | nsyms = ((struct coff_symfile_info *) objfile->sym_private)->symtbl_num_syms; | |
c906108c SS |
2205 | ssymnum = 0; |
2206 | while (ssymnum < nsyms) | |
2207 | { | |
7a78ae4e | 2208 | int sclass; |
c906108c | 2209 | /* This is the type we pass to partial-stab.h. A less kludgy solution |
c5aa993b JM |
2210 | would be to break out partial-stab.h into its various parts--shuffle |
2211 | off the DBXREAD_ONLY stuff to dbxread.c, and make separate | |
2212 | pstab-norm.h (for most types), pstab-sol.h (for N_SOL), etc. */ | |
c906108c SS |
2213 | int stype; |
2214 | ||
2215 | QUIT; | |
2216 | ||
7a78ae4e ND |
2217 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2218 | sclass = symbol.n_sclass; | |
2219 | ||
c906108c SS |
2220 | switch (sclass) |
2221 | { | |
2222 | case C_EXT: | |
2223 | case C_HIDEXT: | |
2224 | { | |
2225 | /* The CSECT auxent--always the last auxent. */ | |
2226 | union internal_auxent csect_aux; | |
2227 | unsigned int symnum_before = ssymnum; | |
2228 | ||
96baa820 | 2229 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2230 | &ssymnum, objfile); |
2231 | if (symbol.n_numaux > 1) | |
2232 | { | |
2233 | bfd_coff_swap_aux_in | |
2234 | (objfile->obfd, | |
c5aa993b | 2235 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2236 | symbol.n_type, |
2237 | symbol.n_sclass, | |
2238 | symbol.n_numaux - 1, | |
2239 | symbol.n_numaux, | |
2240 | &csect_aux); | |
2241 | } | |
2242 | else | |
96baa820 | 2243 | csect_aux = main_aux[0]; |
c906108c SS |
2244 | |
2245 | /* If symbol name starts with ".$" or "$", ignore it. */ | |
2246 | if (namestring[0] == '$' | |
2247 | || (namestring[0] == '.' && namestring[1] == '$')) | |
2248 | break; | |
2249 | ||
2250 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2251 | { | |
2252 | case XTY_SD: | |
2253 | switch (csect_aux.x_csect.x_smclas) | |
2254 | { | |
2255 | case XMC_PR: | |
2256 | if (last_csect_name) | |
2257 | { | |
2258 | /* If no misc. function recorded in the last | |
2259 | seen csect, enter it as a function. This | |
2260 | will take care of functions like strcmp() | |
2261 | compiled by xlc. */ | |
2262 | ||
2263 | if (!misc_func_recorded) | |
2264 | { | |
2265 | RECORD_MINIMAL_SYMBOL | |
2266 | (last_csect_name, last_csect_val, | |
2267 | mst_text, last_csect_sec, | |
2268 | objfile); | |
2269 | } | |
2270 | ||
2271 | if (pst != NULL) | |
2272 | { | |
2273 | /* We have to allocate one psymtab for | |
2274 | each program csect, because their text | |
2275 | sections need not be adjacent. */ | |
2276 | xcoff_end_psymtab | |
2277 | (pst, psymtab_include_list, includes_used, | |
2278 | symnum_before, dependency_list, | |
2279 | dependencies_used, textlow_not_set); | |
2280 | includes_used = 0; | |
2281 | dependencies_used = 0; | |
2282 | /* Give all psymtabs for this source file the same | |
2283 | name. */ | |
2284 | pst = xcoff_start_psymtab | |
d4f3574e | 2285 | (objfile, |
c906108c SS |
2286 | filestring, |
2287 | symnum_before, | |
2288 | objfile->global_psymbols.next, | |
2289 | objfile->static_psymbols.next); | |
2290 | } | |
2291 | } | |
2292 | if (namestring && namestring[0] == '.') | |
2293 | { | |
2294 | last_csect_name = namestring; | |
2295 | last_csect_val = symbol.n_value; | |
2296 | last_csect_sec = | |
2297 | secnum_to_section (symbol.n_scnum, objfile); | |
2298 | } | |
2299 | if (pst != NULL) | |
2300 | { | |
2301 | CORE_ADDR highval = | |
c5aa993b | 2302 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
c906108c SS |
2303 | if (highval > pst->texthigh) |
2304 | pst->texthigh = highval; | |
2305 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2306 | pst->textlow = symbol.n_value; | |
2307 | } | |
2308 | misc_func_recorded = 0; | |
2309 | break; | |
2310 | ||
2311 | case XMC_RW: | |
2312 | /* Data variables are recorded in the minimal symbol | |
2313 | table, except for section symbols. */ | |
2314 | if (*namestring != '.') | |
2315 | prim_record_minimal_symbol_and_info | |
2316 | (namestring, symbol.n_value, | |
2317 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2318 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
2319 | NULL, objfile); | |
2320 | break; | |
2321 | ||
2322 | case XMC_TC0: | |
2323 | if (toc_offset) | |
2324 | warning ("More than one XMC_TC0 symbol found."); | |
2325 | toc_offset = symbol.n_value; | |
2326 | ||
2327 | /* Make TOC offset relative to start address of section. */ | |
2328 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); | |
2329 | if (bfd_sect) | |
2330 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2331 | break; | |
2332 | ||
2333 | case XMC_TC: | |
2334 | /* These symbols tell us where the TOC entry for a | |
2335 | variable is, not the variable itself. */ | |
2336 | break; | |
2337 | ||
2338 | default: | |
2339 | break; | |
2340 | } | |
2341 | break; | |
2342 | ||
2343 | case XTY_LD: | |
2344 | switch (csect_aux.x_csect.x_smclas) | |
2345 | { | |
2346 | case XMC_PR: | |
2347 | /* A function entry point. */ | |
2348 | ||
2349 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2350 | first_fun_line_offset = | |
96baa820 | 2351 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
c906108c SS |
2352 | RECORD_MINIMAL_SYMBOL |
2353 | (namestring, symbol.n_value, | |
2354 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2355 | secnum_to_section (symbol.n_scnum, objfile), | |
2356 | objfile); | |
2357 | break; | |
2358 | ||
2359 | case XMC_GL: | |
2360 | /* shared library function trampoline code entry | |
2361 | point. */ | |
2362 | ||
2363 | /* record trampoline code entries as | |
2364 | mst_solib_trampoline symbol. When we lookup mst | |
2365 | symbols, we will choose mst_text over | |
2366 | mst_solib_trampoline. */ | |
2367 | RECORD_MINIMAL_SYMBOL | |
2368 | (namestring, symbol.n_value, | |
2369 | mst_solib_trampoline, | |
2370 | secnum_to_section (symbol.n_scnum, objfile), | |
2371 | objfile); | |
2372 | break; | |
2373 | ||
2374 | case XMC_DS: | |
2375 | /* The symbols often have the same names as | |
2376 | debug symbols for functions, and confuse | |
2377 | lookup_symbol. */ | |
2378 | break; | |
2379 | ||
2380 | default: | |
2381 | ||
2382 | /* xlc puts each variable in a separate csect, | |
2383 | so we get an XTY_SD for each variable. But | |
2384 | gcc puts several variables in a csect, so | |
2385 | that each variable only gets an XTY_LD. We | |
2386 | still need to record them. This will | |
2387 | typically be XMC_RW; I suspect XMC_RO and | |
2388 | XMC_BS might be possible too. */ | |
2389 | if (*namestring != '.') | |
2390 | prim_record_minimal_symbol_and_info | |
2391 | (namestring, symbol.n_value, | |
2392 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2393 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
2394 | NULL, objfile); | |
2395 | break; | |
2396 | } | |
2397 | break; | |
2398 | ||
2399 | case XTY_CM: | |
2400 | switch (csect_aux.x_csect.x_smclas) | |
2401 | { | |
2402 | case XMC_RW: | |
2403 | case XMC_BS: | |
2404 | /* Common variables are recorded in the minimal symbol | |
2405 | table, except for section symbols. */ | |
2406 | if (*namestring != '.') | |
2407 | prim_record_minimal_symbol_and_info | |
2408 | (namestring, symbol.n_value, | |
2409 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
2410 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
2411 | NULL, objfile); | |
2412 | break; | |
2413 | } | |
2414 | break; | |
2415 | ||
2416 | default: | |
2417 | break; | |
2418 | } | |
2419 | } | |
2420 | break; | |
2421 | case C_FILE: | |
2422 | { | |
2423 | unsigned int symnum_before; | |
2424 | ||
2425 | symnum_before = ssymnum; | |
96baa820 | 2426 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2427 | &ssymnum, objfile); |
2428 | ||
2429 | /* See if the last csect needs to be recorded. */ | |
2430 | ||
2431 | if (last_csect_name && !misc_func_recorded) | |
2432 | { | |
2433 | ||
2434 | /* If no misc. function recorded in the last seen csect, enter | |
2435 | it as a function. This will take care of functions like | |
2436 | strcmp() compiled by xlc. */ | |
2437 | ||
2438 | RECORD_MINIMAL_SYMBOL | |
2439 | (last_csect_name, last_csect_val, | |
2440 | mst_text, last_csect_sec, objfile); | |
2441 | } | |
2442 | ||
2443 | if (pst) | |
2444 | { | |
2445 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2446 | symnum_before, dependency_list, | |
2447 | dependencies_used, textlow_not_set); | |
2448 | includes_used = 0; | |
2449 | dependencies_used = 0; | |
2450 | } | |
2451 | first_fun_line_offset = 0; | |
2452 | ||
2453 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2454 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2455 | do things the standard COFF way and put it in the auxent. | |
2456 | We use the auxent if the symbol is ".file" and an auxent | |
2457 | exists, otherwise use the symbol itself. */ | |
2458 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2459 | { | |
96baa820 | 2460 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2461 | } |
2462 | else | |
2463 | filestring = namestring; | |
2464 | ||
d4f3574e | 2465 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2466 | filestring, |
2467 | symnum_before, | |
2468 | objfile->global_psymbols.next, | |
2469 | objfile->static_psymbols.next); | |
2470 | last_csect_name = NULL; | |
2471 | } | |
2472 | break; | |
2473 | ||
2474 | default: | |
2475 | { | |
2476 | static struct complaint msg = | |
c5aa993b | 2477 | {"Storage class %d not recognized during scan", 0, 0}; |
c906108c SS |
2478 | complain (&msg, sclass); |
2479 | } | |
2480 | /* FALLTHROUGH */ | |
2481 | ||
2482 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2483 | to handle only the C_FUN and C_EXT. */ | |
2484 | case C_FCN: | |
2485 | ||
2486 | case C_BSTAT: | |
2487 | case C_ESTAT: | |
2488 | case C_ARG: | |
2489 | case C_REGPARM: | |
2490 | case C_REG: | |
2491 | case C_TPDEF: | |
2492 | case C_STRTAG: | |
2493 | case C_UNTAG: | |
2494 | case C_ENTAG: | |
2495 | case C_LABEL: | |
2496 | case C_NULL: | |
2497 | ||
2498 | /* C_EINCL means we are switching back to the main file. But there | |
2499 | is no reason to care; the only thing we want to know about | |
2500 | includes is the names of all the included (.h) files. */ | |
2501 | case C_EINCL: | |
2502 | ||
2503 | case C_BLOCK: | |
2504 | ||
2505 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2506 | used instead. */ | |
2507 | case C_STAT: | |
2508 | ||
2509 | /* I don't think the name of the common block (as opposed to the | |
2510 | variables within it) is something which is user visible | |
2511 | currently. */ | |
2512 | case C_BCOMM: | |
2513 | case C_ECOMM: | |
2514 | ||
2515 | case C_PSYM: | |
2516 | case C_RPSYM: | |
2517 | ||
2518 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2519 | so C_LSYM would appear to be only for locals. */ | |
2520 | case C_LSYM: | |
2521 | ||
2522 | case C_AUTO: | |
2523 | case C_RSYM: | |
2524 | { | |
2525 | /* We probably could save a few instructions by assuming that | |
2526 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2527 | int naux1 = symbol.n_numaux + 1; |
c906108c | 2528 | ssymnum += naux1; |
7a78ae4e | 2529 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2530 | } |
2531 | break; | |
2532 | ||
2533 | case C_BINCL: | |
2534 | stype = N_SOL; | |
2535 | goto pstab; | |
2536 | ||
2537 | case C_FUN: | |
2538 | /* The value of the C_FUN is not the address of the function (it | |
2539 | appears to be the address before linking), but as long as it | |
2540 | is smaller than the actual address, then find_pc_partial_function | |
2541 | will use the minimal symbols instead. I hope. */ | |
2542 | ||
2543 | case C_GSYM: | |
2544 | case C_ECOML: | |
2545 | case C_DECL: | |
2546 | case C_STSYM: | |
2547 | stype = N_LSYM; | |
7a78ae4e | 2548 | pstab: |
96baa820 | 2549 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2550 | &ssymnum, objfile); |
2551 | #define CUR_SYMBOL_TYPE stype | |
2552 | #define CUR_SYMBOL_VALUE symbol.n_value | |
2553 | ||
2554 | /* START_PSYMTAB and END_PSYMTAB are never used, because they are only | |
2555 | called from DBXREAD_ONLY or N_SO code. Likewise for the symnum | |
2556 | variable. */ | |
d4f3574e | 2557 | #define START_PSYMTAB(ofile,fname,low,symoff,global_syms,static_syms) 0 |
c906108c SS |
2558 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\ |
2559 | do {} while (0) | |
2560 | /* We have already set the namestring. */ | |
c5aa993b | 2561 | #define SET_NAMESTRING() /* */ |
c906108c SS |
2562 | |
2563 | #include "partial-stab.h" | |
2564 | } | |
2565 | } | |
2566 | ||
2567 | if (pst) | |
2568 | { | |
2569 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2570 | ssymnum, dependency_list, | |
2571 | dependencies_used, textlow_not_set); | |
2572 | } | |
2573 | ||
2574 | /* Record the toc offset value of this symbol table into objfile structure. | |
2575 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
2576 | this information would be file auxiliary header. */ | |
2577 | ||
2578 | ((struct coff_symfile_info *) objfile->sym_private)->toc_offset = toc_offset; | |
2579 | } | |
2580 | ||
2581 | /* Return the toc offset value for a given objfile. */ | |
2582 | ||
2583 | CORE_ADDR | |
fba45db2 | 2584 | get_toc_offset (struct objfile *objfile) |
c906108c SS |
2585 | { |
2586 | if (objfile) | |
2587 | return ((struct coff_symfile_info *) objfile->sym_private)->toc_offset; | |
2588 | return 0; | |
2589 | } | |
2590 | ||
2591 | /* Scan and build partial symbols for a symbol file. | |
2592 | We have been initialized by a call to dbx_symfile_init, which | |
2593 | put all the relevant info into a "struct dbx_symfile_info", | |
2594 | hung off the objfile structure. | |
2595 | ||
2596 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
2597 | various sections are (depending where the sections were actually loaded). | |
2598 | MAINLINE is true if we are reading the main symbol | |
2599 | table (as opposed to a shared lib or dynamically loaded file). */ | |
2600 | ||
2601 | static void | |
b095261a | 2602 | xcoff_initial_scan (struct objfile *objfile, int mainline) |
c906108c SS |
2603 | { |
2604 | bfd *abfd; | |
2605 | int val; | |
2606 | struct cleanup *back_to; | |
c5aa993b JM |
2607 | int num_symbols; /* # of symbols */ |
2608 | file_ptr symtab_offset; /* symbol table and */ | |
2609 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c SS |
2610 | struct coff_symfile_info *info; |
2611 | char *name; | |
2612 | unsigned int size; | |
2613 | ||
c5aa993b | 2614 | info = (struct coff_symfile_info *) objfile->sym_private; |
c906108c SS |
2615 | symfile_bfd = abfd = objfile->obfd; |
2616 | name = objfile->name; | |
2617 | ||
2618 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2619 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2620 | stringtab_offset = symtab_offset + | |
c5aa993b | 2621 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2622 | |
2623 | info->min_lineno_offset = 0; | |
2624 | info->max_lineno_offset = 0; | |
2625 | bfd_map_over_sections (abfd, find_linenos, info); | |
2626 | ||
2627 | if (num_symbols > 0) | |
2628 | { | |
2629 | /* Read the string table. */ | |
2630 | init_stringtab (abfd, stringtab_offset, objfile); | |
2631 | ||
2632 | /* Read the .debug section, if present. */ | |
2633 | { | |
2634 | sec_ptr secp; | |
2635 | bfd_size_type length; | |
2636 | char *debugsec = NULL; | |
2637 | ||
2638 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2639 | if (secp) | |
2640 | { | |
2641 | length = bfd_section_size (abfd, secp); | |
2642 | if (length) | |
2643 | { | |
2644 | debugsec = | |
2645 | (char *) obstack_alloc (&objfile->symbol_obstack, length); | |
2646 | ||
2647 | if (!bfd_get_section_contents (abfd, secp, debugsec, | |
2648 | (file_ptr) 0, length)) | |
2649 | { | |
2650 | error ("Error reading .debug section of `%s': %s", | |
2651 | name, bfd_errmsg (bfd_get_error ())); | |
2652 | } | |
2653 | } | |
2654 | } | |
c5aa993b | 2655 | ((struct coff_symfile_info *) objfile->sym_private)->debugsec = |
c906108c SS |
2656 | debugsec; |
2657 | } | |
2658 | } | |
2659 | ||
2660 | /* Read the symbols. We keep them in core because we will want to | |
2661 | access them randomly in read_symbol*. */ | |
2662 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2663 | if (val < 0) | |
2664 | error ("Error reading symbols from %s: %s", | |
2665 | name, bfd_errmsg (bfd_get_error ())); | |
2666 | size = coff_data (abfd)->local_symesz * num_symbols; | |
c5aa993b | 2667 | ((struct coff_symfile_info *) objfile->sym_private)->symtbl = |
c906108c | 2668 | obstack_alloc (&objfile->symbol_obstack, size); |
c5aa993b | 2669 | ((struct coff_symfile_info *) objfile->sym_private)->symtbl_num_syms = |
c906108c SS |
2670 | num_symbols; |
2671 | ||
c5aa993b | 2672 | val = bfd_read (((struct coff_symfile_info *) objfile->sym_private)->symtbl, |
c906108c SS |
2673 | size, 1, abfd); |
2674 | if (val != size) | |
2675 | perror_with_name ("reading symbol table"); | |
2676 | ||
2677 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
2678 | if (mainline | |
2679 | || objfile->global_psymbols.size == 0 | |
2680 | || objfile->static_psymbols.size == 0) | |
2681 | /* I'm not sure how how good num_symbols is; the rule of thumb in | |
2682 | init_psymbol_list was developed for a.out. On the one hand, | |
2683 | num_symbols includes auxents. On the other hand, it doesn't | |
2684 | include N_SLINE. */ | |
2685 | init_psymbol_list (objfile, num_symbols); | |
2686 | ||
2687 | free_pending_blocks (); | |
a0b3c4fd | 2688 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2689 | |
2690 | init_minimal_symbol_collection (); | |
56e290f4 | 2691 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
2692 | |
2693 | /* Now that the symbol table data of the executable file are all in core, | |
2694 | process them and define symbols accordingly. */ | |
2695 | ||
d4f3574e | 2696 | scan_xcoff_symtab (objfile); |
c906108c SS |
2697 | |
2698 | /* Install any minimal symbols that have been collected as the current | |
2699 | minimal symbols for this objfile. */ | |
2700 | ||
2701 | install_minimal_symbols (objfile); | |
2702 | ||
2703 | do_cleanups (back_to); | |
2704 | } | |
2705 | \f | |
d4f3574e | 2706 | static void |
fba45db2 | 2707 | xcoff_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs) |
c906108c | 2708 | { |
b8fbeb18 | 2709 | asection *sect = NULL; |
c906108c SS |
2710 | int i; |
2711 | ||
2712 | objfile->num_sections = SECT_OFF_MAX; | |
d4f3574e | 2713 | objfile->section_offsets = (struct section_offsets *) |
96baa820 | 2714 | obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS); |
c906108c | 2715 | |
b8fbeb18 EZ |
2716 | /* Initialize the section indexes for future use. */ |
2717 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
2718 | if (sect) | |
2719 | objfile->sect_index_text = sect->index; | |
2720 | ||
2721 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
2722 | if (sect) | |
2723 | objfile->sect_index_data = sect->index; | |
2724 | ||
2725 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
2726 | if (sect) | |
2727 | objfile->sect_index_bss = sect->index; | |
2728 | ||
2729 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
2730 | if (sect) | |
2731 | objfile->sect_index_rodata = sect->index; | |
2732 | ||
c906108c | 2733 | for (i = 0; i < objfile->num_sections; ++i) |
b8fbeb18 EZ |
2734 | { |
2735 | /* syms_from_objfile kindly subtracts from addr the | |
2736 | bfd_section_vma of the .text section. This strikes me as | |
2737 | wrong--whether the offset to be applied to symbol reading is | |
2738 | relative to the start address of the section depends on the | |
2739 | symbol format. In any event, this whole "addr" concept is | |
2740 | pretty broken (it doesn't handle any section but .text | |
2741 | sensibly), so just ignore the addr parameter and use 0. | |
2742 | rs6000-nat.c will set the correct section offsets via | |
2743 | objfile_relocate. */ | |
f0a58b0b | 2744 | (objfile->section_offsets)->offsets[i] = 0; |
b8fbeb18 | 2745 | } |
c906108c SS |
2746 | } |
2747 | ||
2748 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
2749 | ||
2750 | static struct sym_fns xcoff_sym_fns = | |
2751 | { | |
2752 | ||
7a78ae4e | 2753 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
2754 | they do have fundamental similarities (for example, the extra storage |
2755 | classes used for stabs could presumably be recognized in any COFF file). | |
2756 | However, in addition to obvious things like all the csect hair, there are | |
2757 | some subtler differences between xcoffread.c and coffread.c, notably | |
2758 | the fact that coffread.c has no need to read in all the symbols, but | |
2759 | xcoffread.c reads all the symbols and does in fact randomly access them | |
2760 | (in C_BSTAT and line number processing). */ | |
2761 | ||
7a78ae4e | 2762 | bfd_target_xcoff_flavour, |
c906108c | 2763 | |
c5aa993b JM |
2764 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2765 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2766 | xcoff_initial_scan, /* sym_read: read a symbol file into symtab */ | |
2767 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2768 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
2769 | NULL /* next: pointer to next struct sym_fns */ | |
c906108c SS |
2770 | }; |
2771 | ||
2772 | void | |
fba45db2 | 2773 | _initialize_xcoffread (void) |
c906108c | 2774 | { |
c5aa993b | 2775 | add_symtab_fns (&xcoff_sym_fns); |
c906108c SS |
2776 | |
2777 | func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
2778 | "<function, no debug info>", NULL); | |
2779 | TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int; | |
2780 | var_symbol_type = | |
2781 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
2782 | "<variable, no debug info>", NULL); | |
2783 | } |