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c906108c SS |
1 | /* Print and select stack frames for GDB, the GNU debugger. |
2 | Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 98, 1999 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <ctype.h> | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "value.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "language.h" | |
29 | #include "frame.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "gdbcore.h" | |
32 | #include "target.h" | |
33 | #include "breakpoint.h" | |
34 | #include "demangle.h" | |
35 | #include "inferior.h" | |
36 | #include "annotate.h" | |
37 | #include "symfile.h" | |
38 | #include "objfiles.h" | |
39 | ||
40 | /* Prototypes for exported functions. */ | |
41 | ||
42 | void args_info PARAMS ((char *, int)); | |
43 | ||
44 | void locals_info PARAMS ((char *, int)); | |
45 | ||
46 | void (*selected_frame_level_changed_hook) PARAMS ((int)); | |
47 | ||
48 | void _initialize_stack PARAMS ((void)); | |
49 | ||
50 | /* Prototypes for local functions. */ | |
51 | ||
52 | static void return_command PARAMS ((char *, int)); | |
53 | ||
54 | static void down_command PARAMS ((char *, int)); | |
55 | ||
56 | static void down_silently_base PARAMS ((char *)); | |
57 | ||
58 | static void down_silently_command PARAMS ((char *, int)); | |
59 | ||
60 | static void up_command PARAMS ((char *, int)); | |
61 | ||
62 | static void up_silently_base PARAMS ((char *)); | |
63 | ||
64 | static void up_silently_command PARAMS ((char *, int)); | |
65 | ||
66 | void frame_command PARAMS ((char *, int)); | |
67 | ||
7a292a7a SS |
68 | static void current_frame_command PARAMS ((char *, int)); |
69 | ||
c906108c SS |
70 | static void select_frame_command PARAMS ((char *, int)); |
71 | ||
72 | static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *)); | |
73 | ||
74 | static void catch_info PARAMS ((char *, int)); | |
75 | ||
76 | static void args_plus_locals_info PARAMS ((char *, int)); | |
77 | ||
78 | static void print_frame_label_vars PARAMS ((struct frame_info *, | |
79 | int, | |
80 | GDB_FILE *)); | |
81 | ||
82 | static void print_frame_local_vars PARAMS ((struct frame_info *, | |
83 | int, | |
84 | GDB_FILE *)); | |
85 | ||
86 | static int print_block_frame_labels PARAMS ((struct block *, int *, | |
87 | GDB_FILE *)); | |
88 | ||
89 | static int print_block_frame_locals PARAMS ((struct block *, | |
90 | struct frame_info *, | |
91 | int, | |
92 | GDB_FILE *)); | |
93 | ||
94 | static void print_frame_info_base PARAMS ((struct frame_info *, int, int, int)); | |
95 | ||
96 | static void print_stack_frame_base PARAMS ((struct frame_info *, int, int)); | |
97 | ||
98 | static void backtrace_command PARAMS ((char *, int)); | |
99 | ||
100 | struct frame_info *parse_frame_specification PARAMS ((char *)); | |
101 | ||
102 | static void frame_info PARAMS ((char *, int)); | |
103 | ||
104 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
105 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
106 | extern int lines_to_list; /* # of lines "list" command shows by default */ | |
107 | ||
108 | /* The "selected" stack frame is used by default for local and arg access. | |
109 | May be zero, for no selected frame. */ | |
110 | ||
111 | struct frame_info *selected_frame; | |
112 | ||
113 | /* Level of the selected frame: | |
114 | 0 for innermost, 1 for its caller, ... | |
115 | or -1 for frame specified by address with no defined level. */ | |
116 | ||
117 | int selected_frame_level; | |
118 | ||
119 | /* Zero means do things normally; we are interacting directly with the | |
120 | user. One means print the full filename and linenumber when a | |
121 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
122 | parse. Two means print similar annotations, but in many more | |
123 | cases and in a slightly different syntax. */ | |
124 | ||
125 | int annotation_level = 0; | |
126 | ||
127 | \f | |
128 | struct print_stack_frame_args { | |
129 | struct frame_info *fi; | |
130 | int level; | |
131 | int source; | |
132 | int args; | |
133 | }; | |
134 | ||
135 | static int print_stack_frame_base_stub PARAMS ((char *)); | |
136 | ||
137 | /* Show and print the frame arguments. | |
138 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 139 | static int show_and_print_stack_frame_stub PARAMS ((void *args)); |
c906108c SS |
140 | static int |
141 | show_and_print_stack_frame_stub (args) | |
7a292a7a | 142 | void *args; |
c906108c SS |
143 | { |
144 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
145 | ||
146 | /* Reversed order of these so tuiDo() doesn't occur | |
147 | * in the middle of "Breakpoint 1 ... [location]" printing = RT | |
148 | */ | |
149 | if (tui_version) | |
150 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
151 | print_frame_info (p->fi, p->level, p->source, p->args); | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | /* Show or print the frame arguments. | |
157 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 158 | static int print_stack_frame_stub PARAMS ((void *args)); |
c906108c SS |
159 | static int |
160 | print_stack_frame_stub (args) | |
7a292a7a | 161 | void *args; |
c906108c SS |
162 | { |
163 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
164 | ||
165 | if (tui_version) | |
166 | print_frame_info (p->fi, p->level, p->source, p->args); | |
167 | else | |
168 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
173 | and LEVEL should be its level in the stack (or -1 for level not | |
174 | defined). */ | |
175 | ||
176 | /* Pass the args the way catch_errors wants them. */ | |
177 | static int | |
178 | print_stack_frame_base_stub (args) | |
179 | char *args; | |
180 | { | |
181 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
182 | ||
183 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | /* print the frame arguments to the terminal. | |
188 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 189 | static int print_only_stack_frame_stub PARAMS ((void *)); |
c906108c SS |
190 | static int |
191 | print_only_stack_frame_stub (args) | |
7a292a7a | 192 | void *args; |
c906108c SS |
193 | { |
194 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
195 | ||
196 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
201 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
202 | This prints the level, the function executing, the arguments, | |
203 | and the file name and line number. | |
204 | If the pc is not at the beginning of the source line, | |
205 | the actual pc is printed at the beginning. | |
206 | ||
207 | If SOURCE is 1, print the source line as well. | |
208 | If SOURCE is -1, print ONLY the source line. */ | |
209 | ||
210 | static void | |
211 | print_stack_frame_base (fi, level, source) | |
212 | struct frame_info *fi; | |
213 | int level; | |
214 | int source; | |
215 | { | |
216 | struct print_stack_frame_args args; | |
217 | ||
218 | args.fi = fi; | |
219 | args.level = level; | |
220 | args.source = source; | |
221 | args.args = 1; | |
222 | ||
7a292a7a | 223 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
224 | } |
225 | ||
226 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
227 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
228 | This prints the level, the function executing, the arguments, | |
229 | and the file name and line number. | |
230 | If the pc is not at the beginning of the source line, | |
231 | the actual pc is printed at the beginning. | |
232 | ||
233 | If SOURCE is 1, print the source line as well. | |
234 | If SOURCE is -1, print ONLY the source line. */ | |
235 | ||
236 | void | |
237 | show_and_print_stack_frame (fi, level, source) | |
238 | struct frame_info *fi; | |
239 | int level; | |
240 | int source; | |
241 | { | |
242 | struct print_stack_frame_args args; | |
243 | ||
244 | args.fi = fi; | |
245 | args.level = level; | |
246 | args.source = source; | |
247 | args.args = 1; | |
248 | ||
7a292a7a | 249 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
250 | } |
251 | ||
252 | ||
253 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
254 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
255 | This prints the level, the function executing, the arguments, | |
256 | and the file name and line number. | |
257 | If the pc is not at the beginning of the source line, | |
258 | the actual pc is printed at the beginning. | |
259 | ||
260 | If SOURCE is 1, print the source line as well. | |
261 | If SOURCE is -1, print ONLY the source line. */ | |
262 | ||
263 | void | |
264 | print_stack_frame (fi, level, source) | |
265 | struct frame_info *fi; | |
266 | int level; | |
267 | int source; | |
268 | { | |
269 | struct print_stack_frame_args args; | |
270 | ||
271 | args.fi = fi; | |
272 | args.level = level; | |
273 | args.source = source; | |
274 | args.args = 1; | |
275 | ||
276 | catch_errors (print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL); | |
277 | } | |
278 | ||
279 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
280 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
281 | This prints the level, the function executing, the arguments, | |
282 | and the file name and line number. | |
283 | If the pc is not at the beginning of the source line, | |
284 | the actual pc is printed at the beginning. | |
285 | ||
286 | If SOURCE is 1, print the source line as well. | |
287 | If SOURCE is -1, print ONLY the source line. */ | |
288 | ||
289 | void | |
290 | print_only_stack_frame (fi, level, source) | |
291 | struct frame_info *fi; | |
292 | int level; | |
293 | int source; | |
294 | { | |
295 | struct print_stack_frame_args args; | |
296 | ||
297 | args.fi = fi; | |
298 | args.level = level; | |
299 | args.source = source; | |
300 | args.args = 1; | |
301 | ||
7a292a7a | 302 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
303 | } |
304 | ||
305 | struct print_args_args { | |
306 | struct symbol *func; | |
307 | struct frame_info *fi; | |
308 | }; | |
309 | ||
310 | static int print_args_stub PARAMS ((PTR)); | |
311 | ||
312 | /* Pass the args the way catch_errors wants them. */ | |
313 | ||
314 | static int | |
315 | print_args_stub (args) | |
316 | PTR args; | |
317 | { | |
318 | int numargs; | |
319 | struct print_args_args *p = (struct print_args_args *)args; | |
320 | ||
392a587b | 321 | numargs = FRAME_NUM_ARGS (p->fi); |
c906108c SS |
322 | print_frame_args (p->func, p->fi, numargs, gdb_stdout); |
323 | return 0; | |
324 | } | |
325 | ||
326 | /* Print information about a frame for frame "fi" at level "level". | |
327 | * Used in "where" output, also used to emit breakpoint or step messages. | |
328 | * LEVEL is the level of the frame, or -1 if it is the innermost frame | |
329 | * but we don't want to print the level. | |
330 | * The meaning of the SOURCE argument is: | |
331 | * -1: Print only source line | |
332 | * 0: Print only location | |
333 | * 1: Print location and source line | |
334 | */ | |
335 | ||
336 | static void | |
337 | print_frame_info_base (fi, level, source, args) | |
338 | struct frame_info *fi; | |
339 | int level; | |
340 | int source; | |
341 | int args; | |
342 | { | |
343 | struct symtab_and_line sal; | |
344 | struct symbol *func; | |
345 | register char *funname = 0; | |
346 | enum language funlang = language_unknown; | |
347 | ||
348 | #if 0 | |
349 | char buf[MAX_REGISTER_RAW_SIZE]; | |
350 | CORE_ADDR sp; | |
351 | ||
352 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
353 | ||
354 | /* Get the value of SP_REGNUM relative to the frame. */ | |
355 | get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL, | |
356 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *)NULL); | |
357 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); | |
358 | ||
359 | /* This is not a perfect test, because if a function alloca's some | |
360 | memory, puts some code there, and then jumps into it, then the test | |
361 | will succeed even though there is no call dummy. Probably best is | |
362 | to check for a bp_call_dummy breakpoint. */ | |
363 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
364 | #else | |
365 | if (frame_in_dummy (fi)) | |
366 | #endif | |
367 | { | |
368 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
369 | ||
370 | /* Do this regardless of SOURCE because we don't have any source | |
371 | to list for this frame. */ | |
372 | if (level >= 0) | |
373 | printf_filtered ("#%-2d ", level); | |
374 | annotate_function_call (); | |
375 | printf_filtered ("<function called from gdb>\n"); | |
376 | annotate_frame_end (); | |
377 | return; | |
378 | } | |
379 | if (fi->signal_handler_caller) | |
380 | { | |
381 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
382 | ||
383 | /* Do this regardless of SOURCE because we don't have any source | |
384 | to list for this frame. */ | |
385 | if (level >= 0) | |
386 | printf_filtered ("#%-2d ", level); | |
387 | annotate_signal_handler_caller (); | |
388 | printf_filtered ("<signal handler called>\n"); | |
389 | annotate_frame_end (); | |
390 | return; | |
391 | } | |
392 | ||
393 | /* If fi is not the innermost frame, that normally means that fi->pc | |
394 | points to *after* the call instruction, and we want to get the line | |
395 | containing the call, never the next line. But if the next frame is | |
396 | a signal_handler_caller or a dummy frame, then the next frame was | |
397 | not entered as the result of a call, and we want to get the line | |
398 | containing fi->pc. */ | |
399 | sal = | |
400 | find_pc_line (fi->pc, | |
401 | fi->next != NULL | |
402 | && !fi->next->signal_handler_caller | |
403 | && !frame_in_dummy (fi->next)); | |
404 | ||
405 | func = find_pc_function (fi->pc); | |
406 | if (func) | |
407 | { | |
408 | /* In certain pathological cases, the symtabs give the wrong | |
409 | function (when we are in the first function in a file which | |
410 | is compiled without debugging symbols, the previous function | |
411 | is compiled with debugging symbols, and the "foo.o" symbol | |
412 | that is supposed to tell us where the file with debugging symbols | |
413 | ends has been truncated by ar because it is longer than 15 | |
414 | characters). This also occurs if the user uses asm() to create | |
415 | a function but not stabs for it (in a file compiled -g). | |
416 | ||
417 | So look in the minimal symbol tables as well, and if it comes | |
418 | up with a larger address for the function use that instead. | |
419 | I don't think this can ever cause any problems; there shouldn't | |
420 | be any minimal symbols in the middle of a function; if this is | |
421 | ever changed many parts of GDB will need to be changed (and we'll | |
422 | create a find_pc_minimal_function or some such). */ | |
423 | ||
424 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
425 | if (msymbol != NULL | |
426 | && (SYMBOL_VALUE_ADDRESS (msymbol) | |
427 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) | |
428 | { | |
429 | #if 0 | |
430 | /* There is no particular reason to think the line number | |
431 | information is wrong. Someone might have just put in | |
432 | a label with asm() but left the line numbers alone. */ | |
433 | /* In this case we have no way of knowing the source file | |
434 | and line number, so don't print them. */ | |
435 | sal.symtab = 0; | |
436 | #endif | |
437 | /* We also don't know anything about the function besides | |
438 | its address and name. */ | |
439 | func = 0; | |
440 | funname = SYMBOL_NAME (msymbol); | |
441 | funlang = SYMBOL_LANGUAGE (msymbol); | |
442 | } | |
443 | else | |
444 | { | |
445 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
446 | * the demangled name that we already have stored in | |
447 | * the symbol table, but we stored a version with | |
448 | * DMGL_PARAMS turned on, and here we don't want | |
449 | * to display parameters. So call the demangler again, | |
450 | * with DMGL_ANSI only. RT | |
451 | * (Yes, I know that printf_symbol_filtered() will | |
452 | * again try to demangle the name on the fly, but | |
453 | * the issue is that if cplus_demangle() fails here, | |
454 | * it'll fail there too. So we want to catch the failure | |
455 | * ("demangled==NULL" case below) here, while we still | |
456 | * have our hands on the function symbol.) | |
457 | */ | |
458 | char * demangled; | |
459 | funname = SYMBOL_NAME (func); | |
460 | funlang = SYMBOL_LANGUAGE (func); | |
461 | if (funlang == language_cplus) { | |
462 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
463 | if (demangled == NULL) | |
464 | /* If the demangler fails, try the demangled name | |
465 | * from the symbol table. This'll have parameters, | |
466 | * but that's preferable to diplaying a mangled name. | |
467 | */ | |
468 | funname = SYMBOL_SOURCE_NAME (func); | |
469 | } | |
470 | } | |
471 | } | |
472 | else | |
473 | { | |
474 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
475 | if (msymbol != NULL) | |
476 | { | |
477 | funname = SYMBOL_NAME (msymbol); | |
478 | funlang = SYMBOL_LANGUAGE (msymbol); | |
479 | } | |
480 | } | |
481 | ||
482 | if (source >= 0 || !sal.symtab) | |
483 | { | |
484 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
485 | ||
486 | if (level >= 0) | |
487 | printf_filtered ("#%-2d ", level); | |
488 | if (addressprint) | |
489 | if (fi->pc != sal.pc || !sal.symtab) | |
490 | { | |
491 | annotate_frame_address (); | |
492 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
493 | annotate_frame_address_end (); | |
494 | printf_filtered (" in "); | |
495 | } | |
496 | annotate_frame_function_name (); | |
497 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, | |
498 | DMGL_ANSI); | |
499 | wrap_here (" "); | |
500 | annotate_frame_args (); | |
501 | fputs_filtered (" (", gdb_stdout); | |
502 | if (args) | |
503 | { | |
504 | struct print_args_args args; | |
505 | args.fi = fi; | |
506 | args.func = func; | |
507 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); | |
508 | QUIT; | |
509 | } | |
510 | printf_filtered (")"); | |
511 | if (sal.symtab && sal.symtab->filename) | |
512 | { | |
513 | annotate_frame_source_begin (); | |
514 | wrap_here (" "); | |
515 | printf_filtered (" at "); | |
516 | annotate_frame_source_file (); | |
517 | printf_filtered ("%s", sal.symtab->filename); | |
518 | annotate_frame_source_file_end (); | |
519 | printf_filtered (":"); | |
520 | annotate_frame_source_line (); | |
521 | printf_filtered ("%d", sal.line); | |
522 | annotate_frame_source_end (); | |
523 | } | |
524 | ||
525 | #ifdef PC_LOAD_SEGMENT | |
526 | /* If we couldn't print out function name but if can figure out what | |
527 | load segment this pc value is from, at least print out some info | |
528 | about its load segment. */ | |
529 | if (!funname) | |
530 | { | |
531 | annotate_frame_where (); | |
532 | wrap_here (" "); | |
533 | printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc)); | |
534 | } | |
535 | #endif | |
536 | #ifdef PC_SOLIB | |
537 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
538 | { | |
539 | char *lib = PC_SOLIB (fi->pc); | |
540 | if (lib) | |
541 | { | |
542 | annotate_frame_where (); | |
543 | wrap_here (" "); | |
544 | printf_filtered (" from %s", lib); | |
545 | } | |
546 | } | |
547 | #endif | |
548 | printf_filtered ("\n"); | |
549 | } | |
550 | ||
551 | if ((source != 0) && sal.symtab) | |
552 | { | |
553 | int done = 0; | |
554 | int mid_statement = source < 0 && fi->pc != sal.pc; | |
555 | if (annotation_level) | |
556 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
557 | fi->pc); | |
558 | if (!done) | |
559 | { | |
560 | if (addressprint && mid_statement && !tui_version) | |
561 | { | |
562 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
563 | printf_filtered ("\t"); | |
564 | } | |
565 | if (print_frame_info_listing_hook) | |
566 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
567 | else if (!tui_version) | |
568 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
569 | } | |
570 | current_source_line = max (sal.line - lines_to_list/2, 1); | |
571 | } | |
572 | if (source != 0) | |
573 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
574 | ||
575 | annotate_frame_end (); | |
576 | ||
577 | gdb_flush (gdb_stdout); | |
578 | } | |
579 | \f | |
580 | ||
7a292a7a | 581 | #if 0 |
c906108c SS |
582 | void |
583 | stack_publish_stopped_with_no_frame() | |
584 | { | |
585 | TUIDO(((TuiOpaqueFuncPtr)tuiUpdateOnEnd)); | |
586 | ||
587 | return; | |
588 | } | |
7a292a7a | 589 | #endif |
c906108c SS |
590 | |
591 | /* Show or print the frame info. If this is the tui, it will be shown in | |
592 | the source display */ | |
593 | void | |
594 | print_frame_info(fi, level, source, args) | |
595 | struct frame_info *fi; | |
596 | register int level; | |
597 | int source; | |
598 | int args; | |
599 | { | |
600 | if (!tui_version) | |
601 | print_frame_info_base(fi, level, source, args); | |
602 | else | |
603 | { | |
604 | if (fi && (frame_in_dummy(fi) || fi->signal_handler_caller)) | |
605 | print_frame_info_base(fi, level, source, args); | |
606 | else | |
607 | { | |
608 | TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); | |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | /* Show the frame info. If this is the tui, it will be shown in | |
614 | the source display otherwise, nothing is done */ | |
615 | void | |
616 | show_stack_frame(fi) | |
617 | struct frame_info *fi; | |
618 | { | |
619 | TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); | |
620 | } | |
621 | ||
622 | \f | |
623 | /* Read a frame specification in whatever the appropriate format is. | |
624 | Call error() if the specification is in any way invalid (i.e. | |
625 | this function never returns NULL). */ | |
626 | ||
627 | struct frame_info * | |
628 | parse_frame_specification (frame_exp) | |
629 | char *frame_exp; | |
630 | { | |
631 | int numargs = 0; | |
632 | #define MAXARGS 4 | |
633 | CORE_ADDR args[MAXARGS]; | |
634 | ||
635 | if (frame_exp) | |
636 | { | |
637 | char *addr_string, *p; | |
638 | struct cleanup *tmp_cleanup; | |
639 | ||
640 | while (*frame_exp == ' ') frame_exp++; | |
641 | ||
642 | while (*frame_exp) | |
643 | { | |
644 | if (numargs > MAXARGS) | |
645 | error ("Too many args in frame specification"); | |
646 | /* Parse an argument. */ | |
647 | for (p = frame_exp; *p && *p != ' '; p++) | |
648 | ; | |
649 | addr_string = savestring(frame_exp, p - frame_exp); | |
650 | ||
651 | { | |
652 | tmp_cleanup = make_cleanup (free, addr_string); | |
653 | args[numargs++] = parse_and_eval_address (addr_string); | |
654 | do_cleanups (tmp_cleanup); | |
655 | } | |
656 | ||
657 | /* Skip spaces, move to possible next arg. */ | |
658 | while (*p == ' ') p++; | |
659 | frame_exp = p; | |
660 | } | |
661 | } | |
662 | ||
663 | switch (numargs) | |
664 | { | |
665 | case 0: | |
666 | if (selected_frame == NULL) | |
667 | error ("No selected frame."); | |
668 | return selected_frame; | |
669 | /* NOTREACHED */ | |
670 | case 1: | |
671 | { | |
672 | int level = args[0]; | |
673 | struct frame_info *fid = | |
674 | find_relative_frame (get_current_frame (), &level); | |
675 | struct frame_info *tfid; | |
676 | ||
677 | if (level == 0) | |
678 | /* find_relative_frame was successful */ | |
679 | return fid; | |
680 | ||
681 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
682 | take at least 2 addresses. It is important to detect this case | |
683 | here so that "frame 100" does not give a confusing error message | |
684 | like "frame specification requires two addresses". This of course | |
685 | does not solve the "frame 100" problem for machines on which | |
686 | a frame specification can be made with one address. To solve | |
687 | that, we need a new syntax for a specifying a frame by address. | |
688 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
689 | two args, etc.), but people might think that is too much typing, | |
690 | so I guess *0x23,0x45 would be a possible alternative (commas | |
691 | really should be used instead of spaces to delimit; using spaces | |
692 | normally works in an expression). */ | |
693 | #ifdef SETUP_ARBITRARY_FRAME | |
694 | error ("No frame %d", args[0]); | |
695 | #endif | |
696 | ||
697 | /* If (s)he specifies the frame with an address, he deserves what | |
698 | (s)he gets. Still, give the highest one that matches. */ | |
699 | ||
700 | for (fid = get_current_frame (); | |
701 | fid && fid->frame != args[0]; | |
702 | fid = get_prev_frame (fid)) | |
703 | ; | |
704 | ||
705 | if (fid) | |
706 | while ((tfid = get_prev_frame (fid)) && | |
707 | (tfid->frame == args[0])) | |
708 | fid = tfid; | |
709 | ||
710 | /* We couldn't identify the frame as an existing frame, but | |
711 | perhaps we can create one with a single argument. */ | |
712 | } | |
713 | ||
714 | default: | |
715 | #ifdef SETUP_ARBITRARY_FRAME | |
716 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
717 | #else | |
718 | /* Usual case. Do it here rather than have everyone supply | |
719 | a SETUP_ARBITRARY_FRAME that does this. */ | |
720 | if (numargs == 1) | |
721 | return create_new_frame (args[0], 0); | |
722 | error ("Too many args in frame specification"); | |
723 | #endif | |
724 | /* NOTREACHED */ | |
725 | } | |
726 | /* NOTREACHED */ | |
727 | } | |
728 | ||
729 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
730 | that if it is unsure about the answer, it returns 0 | |
731 | instead of guessing (this happens on the VAX and i960, for example). | |
732 | ||
733 | On most machines, we never have to guess about the args address, | |
734 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
735 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
736 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
737 | #endif | |
738 | ||
739 | /* Print verbosely the selected frame or the frame at address ADDR. | |
740 | This means absolutely all information in the frame is printed. */ | |
741 | ||
742 | static void | |
743 | frame_info (addr_exp, from_tty) | |
744 | char *addr_exp; | |
745 | int from_tty; | |
746 | { | |
747 | struct frame_info *fi; | |
748 | struct symtab_and_line sal; | |
749 | struct symbol *func; | |
750 | struct symtab *s; | |
751 | struct frame_info *calling_frame_info; | |
752 | int i, count, numregs; | |
753 | char *funname = 0; | |
754 | enum language funlang = language_unknown; | |
755 | ||
756 | if (!target_has_stack) | |
757 | error ("No stack."); | |
758 | ||
759 | fi = parse_frame_specification (addr_exp); | |
760 | if (fi == NULL) | |
761 | error ("Invalid frame specified."); | |
762 | ||
763 | sal = find_pc_line (fi->pc, | |
764 | fi->next != NULL | |
765 | && !fi->next->signal_handler_caller | |
766 | && !frame_in_dummy (fi->next)); | |
767 | func = get_frame_function (fi); | |
768 | s = find_pc_symtab(fi->pc); | |
769 | if (func) | |
770 | { | |
771 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
772 | * the demangled name that we already have stored in | |
773 | * the symbol table, but we stored a version with | |
774 | * DMGL_PARAMS turned on, and here we don't want | |
775 | * to display parameters. So call the demangler again, | |
776 | * with DMGL_ANSI only. RT | |
777 | * (Yes, I know that printf_symbol_filtered() will | |
778 | * again try to demangle the name on the fly, but | |
779 | * the issue is that if cplus_demangle() fails here, | |
780 | * it'll fail there too. So we want to catch the failure | |
781 | * ("demangled==NULL" case below) here, while we still | |
782 | * have our hands on the function symbol.) | |
783 | */ | |
784 | char * demangled; | |
785 | funname = SYMBOL_NAME (func); | |
786 | funlang = SYMBOL_LANGUAGE (func); | |
787 | if (funlang == language_cplus) | |
788 | { | |
789 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
790 | /* If the demangler fails, try the demangled name | |
791 | * from the symbol table. This'll have parameters, | |
792 | * but that's preferable to diplaying a mangled name. | |
793 | */ | |
794 | if (demangled == NULL) | |
795 | funname = SYMBOL_SOURCE_NAME (func); | |
796 | } | |
797 | } | |
798 | else | |
799 | { | |
800 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
801 | if (msymbol != NULL) | |
802 | { | |
803 | funname = SYMBOL_NAME (msymbol); | |
804 | funlang = SYMBOL_LANGUAGE (msymbol); | |
805 | } | |
806 | } | |
807 | calling_frame_info = get_prev_frame (fi); | |
808 | ||
809 | if (!addr_exp && selected_frame_level >= 0) | |
810 | { | |
811 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
812 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
813 | printf_filtered (":\n"); | |
814 | } | |
815 | else | |
816 | { | |
817 | printf_filtered ("Stack frame at "); | |
818 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
819 | printf_filtered (":\n"); | |
820 | } | |
821 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
822 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
823 | ||
824 | wrap_here (" "); | |
825 | if (funname) | |
826 | { | |
827 | printf_filtered (" in "); | |
828 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
829 | DMGL_ANSI | DMGL_PARAMS); | |
830 | } | |
831 | wrap_here (" "); | |
832 | if (sal.symtab) | |
833 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
834 | puts_filtered ("; "); | |
835 | wrap_here (" "); | |
836 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
837 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
838 | printf_filtered ("\n"); | |
839 | ||
840 | { | |
392a587b JM |
841 | int frameless; |
842 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
843 | if (frameless) |
844 | printf_filtered (" (FRAMELESS),"); | |
845 | } | |
846 | ||
847 | if (calling_frame_info) | |
848 | { | |
849 | printf_filtered (" called by frame at "); | |
850 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
851 | } | |
852 | if (fi->next && calling_frame_info) | |
853 | puts_filtered (","); | |
854 | wrap_here (" "); | |
855 | if (fi->next) | |
856 | { | |
857 | printf_filtered (" caller of frame at "); | |
858 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
859 | } | |
860 | if (fi->next || calling_frame_info) | |
861 | puts_filtered ("\n"); | |
862 | if (s) | |
863 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
864 | ||
865 | #ifdef PRINT_EXTRA_FRAME_INFO | |
866 | PRINT_EXTRA_FRAME_INFO (fi); | |
867 | #endif | |
868 | ||
869 | { | |
870 | /* Address of the argument list for this frame, or 0. */ | |
871 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
872 | /* Number of args for this frame, or -1 if unknown. */ | |
873 | int numargs; | |
874 | ||
875 | if (arg_list == 0) | |
876 | printf_filtered (" Arglist at unknown address.\n"); | |
877 | else | |
878 | { | |
879 | printf_filtered (" Arglist at "); | |
880 | print_address_numeric (arg_list, 1, gdb_stdout); | |
881 | printf_filtered (","); | |
882 | ||
392a587b | 883 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
884 | if (numargs < 0) |
885 | puts_filtered (" args: "); | |
886 | else if (numargs == 0) | |
887 | puts_filtered (" no args."); | |
888 | else if (numargs == 1) | |
889 | puts_filtered (" 1 arg: "); | |
890 | else | |
891 | printf_filtered (" %d args: ", numargs); | |
892 | print_frame_args (func, fi, numargs, gdb_stdout); | |
893 | puts_filtered ("\n"); | |
894 | } | |
895 | } | |
896 | { | |
897 | /* Address of the local variables for this frame, or 0. */ | |
898 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
899 | ||
900 | if (arg_list == 0) | |
901 | printf_filtered (" Locals at unknown address,"); | |
902 | else | |
903 | { | |
904 | printf_filtered (" Locals at "); | |
905 | print_address_numeric (arg_list, 1, gdb_stdout); | |
906 | printf_filtered (","); | |
907 | } | |
908 | } | |
909 | ||
910 | FRAME_INIT_SAVED_REGS (fi); | |
911 | if (fi->saved_regs != NULL) | |
912 | { | |
913 | /* The sp is special; what's returned isn't the save address, but | |
914 | actually the value of the previous frame's sp. */ | |
915 | printf_filtered (" Previous frame's sp is "); | |
916 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
917 | printf_filtered ("\n"); | |
918 | count = 0; | |
919 | numregs = ARCH_NUM_REGS; | |
920 | for (i = 0; i < numregs; i++) | |
921 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
922 | { | |
923 | if (count == 0) | |
924 | puts_filtered (" Saved registers:\n "); | |
925 | else | |
926 | puts_filtered (","); | |
927 | wrap_here (" "); | |
928 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
929 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
930 | count++; | |
931 | } | |
932 | if (count) | |
933 | puts_filtered ("\n"); | |
934 | } | |
935 | else | |
936 | { | |
937 | /* We could get some information about saved registers by | |
938 | calling get_saved_register on each register. Which info goes | |
939 | with which frame is necessarily lost, however, and I suspect | |
940 | that the users don't care whether they get the info. */ | |
941 | puts_filtered ("\n"); | |
942 | } | |
943 | } | |
944 | ||
945 | #if 0 | |
946 | /* Set a limit on the number of frames printed by default in a | |
947 | backtrace. */ | |
948 | ||
949 | static int backtrace_limit; | |
950 | ||
951 | static void | |
952 | set_backtrace_limit_command (count_exp, from_tty) | |
953 | char *count_exp; | |
954 | int from_tty; | |
955 | { | |
956 | int count = parse_and_eval_address (count_exp); | |
957 | ||
958 | if (count < 0) | |
959 | error ("Negative argument not meaningful as backtrace limit."); | |
960 | ||
961 | backtrace_limit = count; | |
962 | } | |
963 | ||
964 | static void | |
965 | backtrace_limit_info (arg, from_tty) | |
966 | char *arg; | |
967 | int from_tty; | |
968 | { | |
969 | if (arg) | |
970 | error ("\"Info backtrace-limit\" takes no arguments."); | |
971 | ||
972 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
973 | } | |
974 | #endif | |
975 | ||
976 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
977 | ||
7a292a7a | 978 | static void backtrace_command_1 PARAMS ((char *count_exp, int show_locals, int from_tty)); |
c906108c SS |
979 | static void |
980 | backtrace_command_1 (count_exp, show_locals, from_tty) | |
981 | char *count_exp; | |
982 | int show_locals; | |
983 | int from_tty; | |
984 | { | |
985 | struct frame_info *fi; | |
986 | register int count; | |
987 | register int i; | |
988 | register struct frame_info *trailing; | |
989 | register int trailing_level; | |
990 | ||
991 | if (!target_has_stack) | |
992 | error ("No stack."); | |
993 | ||
994 | /* The following code must do two things. First, it must | |
995 | set the variable TRAILING to the frame from which we should start | |
996 | printing. Second, it must set the variable count to the number | |
997 | of frames which we should print, or -1 if all of them. */ | |
998 | trailing = get_current_frame (); | |
999 | trailing_level = 0; | |
1000 | if (count_exp) | |
1001 | { | |
1002 | count = parse_and_eval_address (count_exp); | |
1003 | if (count < 0) | |
1004 | { | |
1005 | struct frame_info *current; | |
1006 | ||
1007 | count = -count; | |
1008 | ||
1009 | current = trailing; | |
1010 | while (current && count--) | |
1011 | { | |
1012 | QUIT; | |
1013 | current = get_prev_frame (current); | |
1014 | } | |
1015 | ||
1016 | /* Will stop when CURRENT reaches the top of the stack. TRAILING | |
1017 | will be COUNT below it. */ | |
1018 | while (current) | |
1019 | { | |
1020 | QUIT; | |
1021 | trailing = get_prev_frame (trailing); | |
1022 | current = get_prev_frame (current); | |
1023 | trailing_level++; | |
1024 | } | |
1025 | ||
1026 | count = -1; | |
1027 | } | |
1028 | } | |
1029 | else | |
1030 | count = -1; | |
1031 | ||
1032 | if (info_verbose) | |
1033 | { | |
1034 | struct partial_symtab *ps; | |
1035 | ||
1036 | /* Read in symbols for all of the frames. Need to do this in | |
1037 | a separate pass so that "Reading in symbols for xxx" messages | |
1038 | don't screw up the appearance of the backtrace. Also | |
1039 | if people have strong opinions against reading symbols for | |
1040 | backtrace this may have to be an option. */ | |
1041 | i = count; | |
1042 | for (fi = trailing; | |
1043 | fi != NULL && i--; | |
1044 | fi = get_prev_frame (fi)) | |
1045 | { | |
1046 | QUIT; | |
1047 | ps = find_pc_psymtab (fi->pc); | |
1048 | if (ps) | |
1049 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | for (i = 0, fi = trailing; | |
1054 | fi && count--; | |
1055 | i++, fi = get_prev_frame (fi)) | |
1056 | { | |
1057 | QUIT; | |
1058 | ||
1059 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1060 | means further attempts to backtrace would fail (on the other | |
1061 | hand, perhaps the code does or could be fixed to make sure | |
1062 | the frame->prev field gets set to NULL in that case). */ | |
1063 | print_frame_info_base (fi, trailing_level + i, 0, 1); | |
1064 | if (show_locals) | |
1065 | print_frame_local_vars(fi, 1, gdb_stdout); | |
1066 | } | |
1067 | ||
1068 | /* If we've stopped before the end, mention that. */ | |
1069 | if (fi && from_tty) | |
1070 | printf_filtered ("(More stack frames follow...)\n"); | |
1071 | } | |
1072 | ||
1073 | static void | |
1074 | backtrace_command (arg, from_tty) | |
1075 | char *arg; | |
1076 | int from_tty; | |
1077 | { | |
1078 | struct cleanup *old_chain = (struct cleanup *)NULL; | |
1079 | char **argv = (char **)NULL; | |
1080 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1081 | char *argPtr = arg; | |
1082 | ||
1083 | if (arg != (char *)NULL) | |
1084 | { | |
1085 | int i; | |
1086 | ||
1087 | argv = buildargv(arg); | |
7a292a7a | 1088 | old_chain = make_cleanup_freeargv (argv); |
c906108c SS |
1089 | argc = 0; |
1090 | for (i = 0; (argv[i] != (char *)NULL); i++) | |
1091 | { | |
1092 | int j; | |
1093 | ||
1094 | for (j = 0; (j < strlen(argv[i])); j++) | |
1095 | argv[i][j] = tolower(argv[i][j]); | |
1096 | ||
7a292a7a | 1097 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) |
c906108c SS |
1098 | argIndicatingFullTrace = argc; |
1099 | else | |
1100 | { | |
1101 | argc++; | |
1102 | totArgLen += strlen(argv[i]); | |
1103 | } | |
1104 | } | |
1105 | totArgLen += argc; | |
1106 | if (argIndicatingFullTrace >= 0) | |
1107 | { | |
1108 | if (totArgLen > 0) | |
1109 | { | |
1110 | argPtr = (char *)xmalloc(totArgLen + 1); | |
1111 | if (!argPtr) | |
1112 | nomem(0); | |
1113 | else | |
1114 | { | |
1115 | memset(argPtr, 0, totArgLen + 1); | |
1116 | for (i = 0; (i < (argc + 1)); i++) | |
1117 | { | |
1118 | if (i != argIndicatingFullTrace) | |
1119 | { | |
1120 | strcat(argPtr, argv[i]); | |
1121 | strcat(argPtr, " "); | |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | } | |
1126 | else | |
1127 | argPtr = (char *)NULL; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1132 | ||
1133 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
1134 | free(argPtr); | |
1135 | ||
1136 | if (old_chain) | |
1137 | do_cleanups(old_chain); | |
1138 | } | |
1139 | ||
7a292a7a | 1140 | static void backtrace_full_command PARAMS ((char *arg, int from_tty)); |
c906108c SS |
1141 | static void |
1142 | backtrace_full_command (arg, from_tty) | |
1143 | char *arg; | |
1144 | int from_tty; | |
1145 | { | |
1146 | backtrace_command_1 (arg, 1, from_tty); | |
1147 | } | |
1148 | ||
1149 | \f | |
1150 | /* Print the local variables of a block B active in FRAME. | |
1151 | Return 1 if any variables were printed; 0 otherwise. */ | |
1152 | ||
1153 | static int | |
1154 | print_block_frame_locals (b, fi, num_tabs, stream) | |
1155 | struct block *b; | |
1156 | register struct frame_info *fi; | |
1157 | int num_tabs; | |
1158 | register GDB_FILE *stream; | |
1159 | { | |
1160 | int nsyms; | |
1161 | register int i, j; | |
1162 | register struct symbol *sym; | |
1163 | register int values_printed = 0; | |
1164 | ||
1165 | nsyms = BLOCK_NSYMS (b); | |
1166 | ||
1167 | for (i = 0; i < nsyms; i++) | |
1168 | { | |
1169 | sym = BLOCK_SYM (b, i); | |
1170 | switch (SYMBOL_CLASS (sym)) | |
1171 | { | |
1172 | case LOC_LOCAL: | |
1173 | case LOC_REGISTER: | |
1174 | case LOC_STATIC: | |
1175 | case LOC_BASEREG: | |
1176 | values_printed = 1; | |
1177 | for (j = 0; j < num_tabs; j++) | |
1178 | fputs_filtered("\t", stream); | |
1179 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1180 | fputs_filtered (" = ", stream); | |
1181 | print_variable_value (sym, fi, stream); | |
1182 | fprintf_filtered (stream, "\n"); | |
1183 | break; | |
1184 | ||
1185 | default: | |
1186 | /* Ignore symbols which are not locals. */ | |
1187 | break; | |
1188 | } | |
1189 | } | |
1190 | return values_printed; | |
1191 | } | |
1192 | ||
1193 | /* Same, but print labels. */ | |
1194 | ||
1195 | static int | |
1196 | print_block_frame_labels (b, have_default, stream) | |
1197 | struct block *b; | |
1198 | int *have_default; | |
1199 | register GDB_FILE *stream; | |
1200 | { | |
1201 | int nsyms; | |
1202 | register int i; | |
1203 | register struct symbol *sym; | |
1204 | register int values_printed = 0; | |
1205 | ||
1206 | nsyms = BLOCK_NSYMS (b); | |
1207 | ||
1208 | for (i = 0; i < nsyms; i++) | |
1209 | { | |
1210 | sym = BLOCK_SYM (b, i); | |
1211 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
1212 | { | |
1213 | if (*have_default) | |
1214 | continue; | |
1215 | *have_default = 1; | |
1216 | } | |
1217 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1218 | { | |
1219 | struct symtab_and_line sal; | |
1220 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1221 | values_printed = 1; | |
1222 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1223 | if (addressprint) | |
1224 | { | |
1225 | fprintf_filtered (stream, " "); | |
1226 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1227 | } | |
1228 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1229 | sal.symtab->filename, sal.line); | |
1230 | } | |
1231 | } | |
1232 | return values_printed; | |
1233 | } | |
1234 | ||
1235 | /* Print on STREAM all the local variables in frame FRAME, | |
1236 | including all the blocks active in that frame | |
1237 | at its current pc. | |
1238 | ||
1239 | Returns 1 if the job was done, | |
1240 | or 0 if nothing was printed because we have no info | |
1241 | on the function running in FRAME. */ | |
1242 | ||
1243 | static void | |
1244 | print_frame_local_vars (fi, num_tabs, stream) | |
1245 | register struct frame_info *fi; | |
1246 | register int num_tabs; | |
1247 | register GDB_FILE *stream; | |
1248 | { | |
1249 | register struct block *block = get_frame_block (fi); | |
1250 | register int values_printed = 0; | |
1251 | ||
1252 | if (block == 0) | |
1253 | { | |
1254 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | while (block != 0) | |
1259 | { | |
1260 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1261 | values_printed = 1; | |
1262 | /* After handling the function's top-level block, stop. | |
1263 | Don't continue to its superblock, the block of | |
1264 | per-file symbols. */ | |
1265 | if (BLOCK_FUNCTION (block)) | |
1266 | break; | |
1267 | block = BLOCK_SUPERBLOCK (block); | |
1268 | } | |
1269 | ||
1270 | if (!values_printed) | |
1271 | { | |
1272 | fprintf_filtered (stream, "No locals.\n"); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | /* Same, but print labels. */ | |
1277 | ||
1278 | static void | |
1279 | print_frame_label_vars (fi, this_level_only, stream) | |
1280 | register struct frame_info *fi; | |
1281 | int this_level_only; | |
1282 | register GDB_FILE *stream; | |
1283 | { | |
1284 | register struct blockvector *bl; | |
1285 | register struct block *block = get_frame_block (fi); | |
1286 | register int values_printed = 0; | |
1287 | int index, have_default = 0; | |
1288 | char *blocks_printed; | |
1289 | CORE_ADDR pc = fi->pc; | |
1290 | ||
1291 | if (block == 0) | |
1292 | { | |
1293 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1294 | return; | |
1295 | } | |
1296 | ||
1297 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1298 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1299 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1300 | ||
1301 | while (block != 0) | |
1302 | { | |
1303 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1304 | int last_index; | |
1305 | ||
1306 | if (bl != blockvector_for_pc (end, &index)) | |
1307 | error ("blockvector blotch"); | |
1308 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1309 | error ("blockvector botch"); | |
1310 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1311 | index += 1; | |
1312 | ||
1313 | /* Don't print out blocks that have gone by. */ | |
1314 | while (index < last_index | |
1315 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1316 | index++; | |
1317 | ||
1318 | while (index < last_index | |
1319 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1320 | { | |
1321 | if (blocks_printed[index] == 0) | |
1322 | { | |
1323 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1324 | values_printed = 1; | |
1325 | blocks_printed[index] = 1; | |
1326 | } | |
1327 | index++; | |
1328 | } | |
1329 | if (have_default) | |
1330 | return; | |
1331 | if (values_printed && this_level_only) | |
1332 | return; | |
1333 | ||
1334 | /* After handling the function's top-level block, stop. | |
1335 | Don't continue to its superblock, the block of | |
1336 | per-file symbols. */ | |
1337 | if (BLOCK_FUNCTION (block)) | |
1338 | break; | |
1339 | block = BLOCK_SUPERBLOCK (block); | |
1340 | } | |
1341 | ||
1342 | if (!values_printed && !this_level_only) | |
1343 | { | |
1344 | fprintf_filtered (stream, "No catches.\n"); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | /* ARGSUSED */ | |
1349 | void | |
1350 | locals_info (args, from_tty) | |
1351 | char *args; | |
1352 | int from_tty; | |
1353 | { | |
1354 | if (!selected_frame) | |
1355 | error ("No frame selected."); | |
1356 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1357 | } | |
1358 | ||
1359 | static void | |
1360 | catch_info (ignore, from_tty) | |
1361 | char *ignore; | |
1362 | int from_tty; | |
1363 | { | |
1364 | struct symtab_and_line * sal; | |
1365 | ||
1366 | /* Check for target support for exception handling */ | |
1367 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); | |
1368 | if (sal) | |
1369 | { | |
1370 | /* Currently not handling this */ | |
1371 | /* Ideally, here we should interact with the C++ runtime | |
1372 | system to find the list of active handlers, etc. */ | |
1373 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1374 | #if 0 | |
1375 | if (!selected_frame) | |
1376 | error ("No frame selected."); | |
1377 | #endif | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | /* Assume g++ compiled code -- old v 4.16 behaviour */ | |
1382 | if (!selected_frame) | |
1383 | error ("No frame selected."); | |
1384 | ||
1385 | print_frame_label_vars (selected_frame, 0, gdb_stdout); | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | static void | |
1390 | print_frame_arg_vars (fi, stream) | |
1391 | register struct frame_info *fi; | |
1392 | register GDB_FILE *stream; | |
1393 | { | |
1394 | struct symbol *func = get_frame_function (fi); | |
1395 | register struct block *b; | |
1396 | int nsyms; | |
1397 | register int i; | |
1398 | register struct symbol *sym, *sym2; | |
1399 | register int values_printed = 0; | |
1400 | ||
1401 | if (func == 0) | |
1402 | { | |
1403 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1404 | return; | |
1405 | } | |
1406 | ||
1407 | b = SYMBOL_BLOCK_VALUE (func); | |
1408 | nsyms = BLOCK_NSYMS (b); | |
1409 | ||
1410 | for (i = 0; i < nsyms; i++) | |
1411 | { | |
1412 | sym = BLOCK_SYM (b, i); | |
1413 | switch (SYMBOL_CLASS (sym)) | |
1414 | { | |
1415 | case LOC_ARG: | |
1416 | case LOC_LOCAL_ARG: | |
1417 | case LOC_REF_ARG: | |
1418 | case LOC_REGPARM: | |
1419 | case LOC_REGPARM_ADDR: | |
1420 | case LOC_BASEREG_ARG: | |
1421 | values_printed = 1; | |
1422 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1423 | fputs_filtered (" = ", stream); | |
1424 | ||
1425 | /* We have to look up the symbol because arguments can have | |
1426 | two entries (one a parameter, one a local) and the one we | |
1427 | want is the local, which lookup_symbol will find for us. | |
1428 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1429 | small structure and gcc2 when the argument type is float | |
1430 | and it is passed as a double and converted to float by | |
1431 | the prologue (in the latter case the type of the LOC_ARG | |
1432 | symbol is double and the type of the LOC_LOCAL symbol is | |
1433 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1434 | are not combined in symbol-reading. */ | |
1435 | ||
1436 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
1437 | b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); | |
1438 | print_variable_value (sym2, fi, stream); | |
1439 | fprintf_filtered (stream, "\n"); | |
1440 | break; | |
1441 | ||
1442 | default: | |
1443 | /* Don't worry about things which aren't arguments. */ | |
1444 | break; | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | if (!values_printed) | |
1449 | { | |
1450 | fprintf_filtered (stream, "No arguments.\n"); | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | void | |
1455 | args_info (ignore, from_tty) | |
1456 | char *ignore; | |
1457 | int from_tty; | |
1458 | { | |
1459 | if (!selected_frame) | |
1460 | error ("No frame selected."); | |
1461 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1462 | } | |
1463 | ||
1464 | ||
1465 | static void | |
1466 | args_plus_locals_info (ignore, from_tty) | |
1467 | char *ignore; | |
1468 | int from_tty; | |
1469 | { | |
1470 | args_info(ignore, from_tty); | |
1471 | locals_info(ignore, from_tty); | |
1472 | } | |
1473 | ||
1474 | \f | |
1475 | /* Select frame FI, and note that its stack level is LEVEL. | |
1476 | LEVEL may be -1 if an actual level number is not known. */ | |
1477 | ||
1478 | void | |
1479 | select_frame (fi, level) | |
1480 | struct frame_info *fi; | |
1481 | int level; | |
1482 | { | |
1483 | register struct symtab *s; | |
1484 | ||
1485 | selected_frame = fi; | |
1486 | selected_frame_level = level; | |
1487 | if (selected_frame_level_changed_hook) | |
1488 | selected_frame_level_changed_hook (level); | |
1489 | ||
1490 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1491 | source language of this frame, and switch to it if desired. */ | |
1492 | if (fi) | |
1493 | { | |
1494 | s = find_pc_symtab (fi->pc); | |
1495 | if (s | |
1496 | && s->language != current_language->la_language | |
1497 | && s->language != language_unknown | |
1498 | && language_mode == language_mode_auto) { | |
1499 | set_language(s->language); | |
1500 | } | |
1501 | /* elz: this if here fixes the problem with the pc not being displayed | |
1502 | in the tui asm layout, with no debug symbols. The value of s | |
1503 | would be 0 here, and select_source_symtab would abort the | |
1504 | command by calling the 'error' function*/ | |
1505 | if (s) | |
1506 | { | |
1507 | TUIDO(((TuiOpaqueFuncPtr)tui_vSelectSourceSymtab, s)); | |
1508 | } | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | \f | |
1513 | /* Select frame FI, noting that its stack level is LEVEL. Also print | |
1514 | the stack frame and show the source if this is the tui version. */ | |
1515 | void | |
1516 | select_and_print_frame(fi, level) | |
1517 | struct frame_info *fi; | |
1518 | int level; | |
1519 | { | |
1520 | select_frame(fi, level); | |
1521 | if (fi) | |
1522 | { | |
1523 | print_stack_frame(fi, level, 1); | |
1524 | TUIDO(((TuiOpaqueFuncPtr)tui_vCheckDataValues, fi)); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | \f | |
1529 | /* Select frame FI, noting that its stack level is LEVEL. Be silent if | |
1530 | not the TUI */ | |
7a292a7a | 1531 | #if 0 |
c906108c SS |
1532 | void |
1533 | select_and_maybe_print_frame (fi, level) | |
1534 | struct frame_info *fi; | |
1535 | int level; | |
1536 | { | |
1537 | if (!tui_version) | |
1538 | select_frame(fi, level); | |
1539 | else | |
1540 | select_and_print_frame(fi, level); | |
1541 | } | |
7a292a7a | 1542 | #endif |
c906108c SS |
1543 | |
1544 | ||
1545 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. | |
1546 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1547 | ||
1548 | void | |
1549 | record_selected_frame (frameaddrp, levelp) | |
1550 | CORE_ADDR *frameaddrp; | |
1551 | int *levelp; | |
1552 | { | |
1553 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1554 | *levelp = selected_frame_level; | |
1555 | } | |
1556 | ||
1557 | /* Return the symbol-block in which the selected frame is executing. | |
1558 | Can return zero under various legitimate circumstances. */ | |
1559 | ||
1560 | struct block * | |
1561 | get_selected_block () | |
1562 | { | |
1563 | if (!target_has_stack) | |
1564 | return 0; | |
1565 | ||
1566 | if (!selected_frame) | |
1567 | return get_current_block (); | |
1568 | return get_frame_block (selected_frame); | |
1569 | } | |
1570 | ||
1571 | /* Find a frame a certain number of levels away from FRAME. | |
1572 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1573 | Positive means go to earlier frames (up); negative, the reverse. | |
1574 | The int that contains the number of levels is counted toward | |
1575 | zero as the frames for those levels are found. | |
1576 | If the top or bottom frame is reached, that frame is returned, | |
1577 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1578 | how much farther the original request asked to go. */ | |
1579 | ||
1580 | struct frame_info * | |
1581 | find_relative_frame (frame, level_offset_ptr) | |
1582 | register struct frame_info *frame; | |
1583 | register int *level_offset_ptr; | |
1584 | { | |
1585 | register struct frame_info *prev; | |
1586 | register struct frame_info *frame1; | |
1587 | ||
1588 | /* Going up is simple: just do get_prev_frame enough times | |
1589 | or until initial frame is reached. */ | |
1590 | while (*level_offset_ptr > 0) | |
1591 | { | |
1592 | prev = get_prev_frame (frame); | |
1593 | if (prev == 0) | |
1594 | break; | |
1595 | (*level_offset_ptr)--; | |
1596 | frame = prev; | |
1597 | } | |
1598 | /* Going down is just as simple. */ | |
1599 | if (*level_offset_ptr < 0) | |
1600 | { | |
1601 | while (*level_offset_ptr < 0) { | |
1602 | frame1 = get_next_frame (frame); | |
1603 | if (!frame1) | |
1604 | break; | |
1605 | frame = frame1; | |
1606 | (*level_offset_ptr)++; | |
1607 | } | |
1608 | } | |
1609 | return frame; | |
1610 | } | |
1611 | ||
1612 | /* The "select_frame" command. With no arg, NOP. | |
1613 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1614 | valid level. Otherwise, treat level_exp as an address expression | |
1615 | and select it. See parse_frame_specification for more info on proper | |
1616 | frame expressions. */ | |
1617 | ||
1618 | /* ARGSUSED */ | |
1619 | static void | |
1620 | select_frame_command (level_exp, from_tty) | |
1621 | char *level_exp; | |
1622 | int from_tty; | |
1623 | { | |
1624 | register struct frame_info *frame, *frame1; | |
1625 | unsigned int level = 0; | |
1626 | ||
1627 | if (!target_has_stack) | |
1628 | error ("No stack."); | |
1629 | ||
1630 | frame = parse_frame_specification (level_exp); | |
1631 | ||
1632 | /* Try to figure out what level this frame is. But if there is | |
1633 | no current stack, don't error out -- let the user set one. */ | |
1634 | frame1 = 0; | |
1635 | if (get_current_frame()) { | |
1636 | for (frame1 = get_prev_frame (0); | |
1637 | frame1 && frame1 != frame; | |
1638 | frame1 = get_prev_frame (frame1)) | |
1639 | level++; | |
1640 | } | |
1641 | ||
1642 | if (!frame1) | |
1643 | level = 0; | |
1644 | ||
1645 | select_frame (frame, level); | |
1646 | } | |
1647 | ||
1648 | /* The "frame" command. With no arg, print selected frame briefly. | |
1649 | With arg, behaves like select_frame and then prints the selected | |
1650 | frame. */ | |
1651 | ||
1652 | void | |
1653 | frame_command (level_exp, from_tty) | |
1654 | char *level_exp; | |
1655 | int from_tty; | |
1656 | { | |
1657 | select_frame_command (level_exp, from_tty); | |
1658 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1659 | } | |
1660 | ||
1661 | /* The XDB Compatibility command to print the current frame. */ | |
1662 | ||
7a292a7a | 1663 | static void |
c906108c SS |
1664 | current_frame_command (level_exp, from_tty) |
1665 | char *level_exp; | |
1666 | int from_tty; | |
1667 | { | |
1668 | if (target_has_stack == 0 || selected_frame == 0) | |
1669 | error ("No stack."); | |
7a292a7a SS |
1670 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1671 | } | |
c906108c SS |
1672 | |
1673 | /* Select the frame up one or COUNT stack levels | |
1674 | from the previously selected frame, and print it briefly. */ | |
1675 | ||
1676 | /* ARGSUSED */ | |
1677 | static void | |
1678 | up_silently_base (count_exp) | |
1679 | char *count_exp; | |
1680 | { | |
1681 | register struct frame_info *fi; | |
1682 | int count = 1, count1; | |
1683 | if (count_exp) | |
1684 | count = parse_and_eval_address (count_exp); | |
1685 | count1 = count; | |
1686 | ||
1687 | if (target_has_stack == 0 || selected_frame == 0) | |
1688 | error ("No stack."); | |
1689 | ||
1690 | fi = find_relative_frame (selected_frame, &count1); | |
1691 | if (count1 != 0 && count_exp == 0) | |
1692 | error ("Initial frame selected; you cannot go up."); | |
1693 | select_frame (fi, selected_frame_level + count - count1); | |
1694 | } | |
1695 | ||
1696 | static void | |
1697 | up_silently_command (count_exp, from_tty) | |
1698 | char *count_exp; | |
1699 | int from_tty; | |
1700 | { | |
1701 | up_silently_base(count_exp); | |
1702 | if (tui_version) | |
1703 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1704 | } | |
1705 | ||
1706 | static void | |
1707 | up_command (count_exp, from_tty) | |
1708 | char *count_exp; | |
1709 | int from_tty; | |
1710 | { | |
1711 | up_silently_base (count_exp); | |
1712 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1713 | } | |
1714 | ||
1715 | /* Select the frame down one or COUNT stack levels | |
1716 | from the previously selected frame, and print it briefly. */ | |
1717 | ||
1718 | /* ARGSUSED */ | |
1719 | static void | |
1720 | down_silently_base (count_exp) | |
1721 | char *count_exp; | |
1722 | { | |
1723 | register struct frame_info *frame; | |
1724 | int count = -1, count1; | |
1725 | if (count_exp) | |
1726 | count = - parse_and_eval_address (count_exp); | |
1727 | count1 = count; | |
1728 | ||
1729 | if (target_has_stack == 0 || selected_frame == 0) | |
1730 | error ("No stack."); | |
1731 | ||
1732 | frame = find_relative_frame (selected_frame, &count1); | |
1733 | if (count1 != 0 && count_exp == 0) | |
1734 | { | |
1735 | ||
1736 | /* We only do this if count_exp is not specified. That way "down" | |
1737 | means to really go down (and let me know if that is | |
1738 | impossible), but "down 9999" can be used to mean go all the way | |
1739 | down without getting an error. */ | |
1740 | ||
1741 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1742 | } | |
1743 | ||
1744 | select_frame (frame, selected_frame_level + count - count1); | |
1745 | } | |
1746 | ||
1747 | /* ARGSUSED */ | |
1748 | static void | |
1749 | down_silently_command (count_exp, from_tty) | |
1750 | char *count_exp; | |
1751 | int from_tty; | |
1752 | { | |
1753 | down_silently_base (count_exp); | |
1754 | if (tui_version) | |
1755 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1756 | } | |
1757 | ||
1758 | static void | |
1759 | down_command (count_exp, from_tty) | |
1760 | char *count_exp; | |
1761 | int from_tty; | |
1762 | { | |
1763 | down_silently_base (count_exp); | |
1764 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1765 | } | |
1766 | \f | |
1767 | static void | |
1768 | return_command (retval_exp, from_tty) | |
1769 | char *retval_exp; | |
1770 | int from_tty; | |
1771 | { | |
1772 | struct symbol *thisfun; | |
1773 | CORE_ADDR selected_frame_addr; | |
1774 | CORE_ADDR selected_frame_pc; | |
1775 | struct frame_info *frame; | |
1776 | value_ptr return_value = NULL; | |
1777 | ||
1778 | if (selected_frame == NULL) | |
1779 | error ("No selected frame."); | |
1780 | thisfun = get_frame_function (selected_frame); | |
1781 | selected_frame_addr = FRAME_FP (selected_frame); | |
1782 | selected_frame_pc = selected_frame->pc; | |
1783 | ||
1784 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1785 | ||
1786 | if (retval_exp) | |
1787 | { | |
1788 | struct type *return_type = NULL; | |
1789 | ||
1790 | return_value = parse_and_eval (retval_exp); | |
1791 | ||
1792 | /* Cast return value to the return type of the function. */ | |
1793 | if (thisfun != NULL) | |
1794 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1795 | if (return_type == NULL) | |
1796 | return_type = builtin_type_int; | |
1797 | return_value = value_cast (return_type, return_value); | |
1798 | ||
1799 | /* Make sure we have fully evaluated it, since | |
1800 | it might live in the stack frame we're about to pop. */ | |
1801 | if (VALUE_LAZY (return_value)) | |
1802 | value_fetch_lazy (return_value); | |
1803 | } | |
1804 | ||
1805 | /* If interactive, require confirmation. */ | |
1806 | ||
1807 | if (from_tty) | |
1808 | { | |
1809 | if (thisfun != 0) | |
1810 | { | |
1811 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1812 | { | |
1813 | error ("Not confirmed."); | |
1814 | /* NOTREACHED */ | |
1815 | } | |
1816 | } | |
1817 | else | |
1818 | if (!query ("Make selected stack frame return now? ")) | |
1819 | error ("Not confirmed."); | |
1820 | } | |
1821 | ||
1822 | /* Do the real work. Pop until the specified frame is current. We | |
1823 | use this method because the selected_frame is not valid after | |
1824 | a POP_FRAME. The pc comparison makes this work even if the | |
1825 | selected frame shares its fp with another frame. */ | |
1826 | ||
1827 | while (selected_frame_addr != (frame = get_current_frame())->frame | |
1828 | || selected_frame_pc != frame->pc) | |
1829 | POP_FRAME; | |
1830 | ||
1831 | /* Then pop that frame. */ | |
1832 | ||
1833 | POP_FRAME; | |
1834 | ||
1835 | /* Compute the return value (if any) and store in the place | |
1836 | for return values. */ | |
1837 | ||
1838 | if (retval_exp) | |
1839 | set_return_value (return_value); | |
1840 | ||
1841 | /* If interactive, print the frame that is now current. */ | |
1842 | ||
1843 | if (from_tty) | |
1844 | frame_command ("0", 1); | |
1845 | else | |
1846 | select_frame_command ("0", 0); | |
1847 | } | |
1848 | ||
1849 | /* Sets the scope to input function name, provided that the | |
1850 | function is within the current stack frame */ | |
1851 | ||
1852 | struct function_bounds | |
1853 | { | |
1854 | CORE_ADDR low, high; | |
1855 | }; | |
1856 | ||
7a292a7a | 1857 | static void func_command PARAMS ((char *arg, int from_tty)); |
c906108c SS |
1858 | static void |
1859 | func_command (arg, from_tty) | |
1860 | char *arg; | |
1861 | int from_tty; | |
1862 | { | |
1863 | struct frame_info *fp; | |
1864 | int found = 0; | |
1865 | struct symtabs_and_lines sals; | |
1866 | int i; | |
1867 | int level = 1; | |
1868 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1869 | ||
1870 | if (arg != (char *) NULL) | |
1871 | return; | |
1872 | ||
1873 | fp = parse_frame_specification ("0"); | |
1874 | sals = decode_line_spec (arg, 1); | |
1875 | func_bounds = (struct function_bounds *) xmalloc ( | |
1876 | sizeof (struct function_bounds) * sals.nelts); | |
1877 | for (i = 0; (i < sals.nelts && !found); i++) | |
1878 | { | |
1879 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1880 | find_pc_partial_function (sals.sals[i].pc, | |
1881 | (char **) NULL, | |
1882 | &func_bounds[i].low, | |
1883 | &func_bounds[i].high) == 0) | |
1884 | { | |
1885 | func_bounds[i].low = | |
1886 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | do | |
1891 | { | |
1892 | for (i = 0; (i < sals.nelts && !found); i++) | |
1893 | found = (fp->pc >= func_bounds[i].low && | |
1894 | fp->pc < func_bounds[i].high); | |
1895 | if (!found) | |
1896 | { | |
1897 | level = 1; | |
1898 | fp = find_relative_frame (fp, &level); | |
1899 | } | |
1900 | } | |
1901 | while (!found && level == 0); | |
1902 | ||
1903 | if (func_bounds) | |
1904 | free (func_bounds); | |
1905 | ||
1906 | if (!found) | |
1907 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1908 | else if (fp != selected_frame) | |
1909 | select_and_print_frame (fp, level); | |
1910 | } | |
1911 | ||
1912 | /* Gets the language of the current frame. */ | |
1913 | ||
1914 | enum language | |
1915 | get_frame_language () | |
1916 | { | |
1917 | register struct symtab *s; | |
1918 | enum language flang; /* The language of the current frame */ | |
1919 | ||
1920 | if (selected_frame) | |
1921 | { | |
1922 | s = find_pc_symtab(selected_frame->pc); | |
1923 | if (s) | |
1924 | flang = s->language; | |
1925 | else | |
1926 | flang = language_unknown; | |
1927 | } | |
1928 | else | |
1929 | flang = language_unknown; | |
1930 | ||
1931 | return flang; | |
1932 | } | |
1933 | \f | |
1934 | void | |
1935 | _initialize_stack () | |
1936 | { | |
1937 | #if 0 | |
1938 | backtrace_limit = 30; | |
1939 | #endif | |
1940 | ||
1941 | add_com ("return", class_stack, return_command, | |
1942 | "Make selected stack frame return to its caller.\n\ | |
1943 | Control remains in the debugger, but when you continue\n\ | |
1944 | execution will resume in the frame above the one now selected.\n\ | |
1945 | If an argument is given, it is an expression for the value to return."); | |
1946 | ||
1947 | add_com ("up", class_stack, up_command, | |
1948 | "Select and print stack frame that called this one.\n\ | |
1949 | An argument says how many frames up to go."); | |
1950 | add_com ("up-silently", class_support, up_silently_command, | |
1951 | "Same as the `up' command, but does not print anything.\n\ | |
1952 | This is useful in command scripts."); | |
1953 | ||
1954 | add_com ("down", class_stack, down_command, | |
1955 | "Select and print stack frame called by this one.\n\ | |
1956 | An argument says how many frames down to go."); | |
1957 | add_com_alias ("do", "down", class_stack, 1); | |
1958 | add_com_alias ("dow", "down", class_stack, 1); | |
1959 | add_com ("down-silently", class_support, down_silently_command, | |
1960 | "Same as the `down' command, but does not print anything.\n\ | |
1961 | This is useful in command scripts."); | |
1962 | ||
1963 | add_com ("frame", class_stack, frame_command, | |
1964 | "Select and print a stack frame.\n\ | |
1965 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1966 | An argument specifies the frame to select.\n\ | |
1967 | It can be a stack frame number or the address of the frame.\n\ | |
1968 | With argument, nothing is printed if input is coming from\n\ | |
1969 | a command file or a user-defined command."); | |
1970 | ||
1971 | add_com_alias ("f", "frame", class_stack, 1); | |
1972 | ||
1973 | if (xdb_commands) | |
1974 | { | |
1975 | add_com("L", class_stack, current_frame_command, | |
1976 | "Print the current stack frame.\n"); | |
1977 | add_com_alias ("V", "frame", class_stack, 1); | |
1978 | } | |
1979 | add_com ("select-frame", class_stack, select_frame_command, | |
1980 | "Select a stack frame without printing anything.\n\ | |
1981 | An argument specifies the frame to select.\n\ | |
1982 | It can be a stack frame number or the address of the frame.\n"); | |
1983 | ||
1984 | add_com ("backtrace", class_stack, backtrace_command, | |
1985 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1986 | With a negative argument, print outermost -COUNT frames.\n\ | |
1987 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1988 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1989 | if (xdb_commands) | |
1990 | { | |
1991 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1992 | add_com ("T", class_stack, backtrace_full_command, | |
1993 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ | |
1994 | and the values of the local variables.\n\ | |
1995 | With a negative argument, print outermost -COUNT frames.\n\ | |
1996 | Usage: T <count>\n"); | |
1997 | } | |
1998 | ||
1999 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2000 | add_info ("stack", backtrace_command, | |
2001 | "Backtrace of the stack, or innermost COUNT frames."); | |
2002 | add_info_alias ("s", "stack", 1); | |
2003 | add_info ("frame", frame_info, | |
2004 | "All about selected stack frame, or frame at ADDR."); | |
2005 | add_info_alias ("f", "frame", 1); | |
2006 | add_info ("locals", locals_info, | |
2007 | "Local variables of current stack frame."); | |
2008 | add_info ("args", args_info, | |
2009 | "Argument variables of current stack frame."); | |
2010 | if (xdb_commands) | |
2011 | add_com("l", class_info, args_plus_locals_info, | |
2012 | "Argument and local variables of current stack frame."); | |
2013 | ||
2014 | if (dbx_commands) | |
2015 | add_com("func", class_stack, func_command, | |
2016 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
2017 | ||
2018 | add_info ("catch", catch_info, | |
2019 | "Exceptions that can be caught in the current stack frame."); | |
2020 | ||
2021 | #if 0 | |
2022 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, | |
2023 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
2024 | &setlist); | |
2025 | add_info ("backtrace-limit", backtrace_limit_info, | |
2026 | "The maximum number of frames for \"backtrace\" to print by default."); | |
2027 | #endif | |
2028 | } |