Commit | Line | Data |
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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 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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. | |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b JM |
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, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include <ctype.h> | |
23 | #include "defs.h" | |
24 | #include "gdb_string.h" | |
25 | #include "value.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "language.h" | |
30 | #include "frame.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "gdbcore.h" | |
33 | #include "target.h" | |
34 | #include "breakpoint.h" | |
35 | #include "demangle.h" | |
36 | #include "inferior.h" | |
37 | #include "annotate.h" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
40 | ||
41 | /* Prototypes for exported functions. */ | |
42 | ||
43 | void args_info PARAMS ((char *, int)); | |
44 | ||
45 | void locals_info PARAMS ((char *, int)); | |
46 | ||
47 | void (*selected_frame_level_changed_hook) PARAMS ((int)); | |
48 | ||
49 | void _initialize_stack PARAMS ((void)); | |
50 | ||
51 | /* Prototypes for local functions. */ | |
52 | ||
53 | static void return_command PARAMS ((char *, int)); | |
54 | ||
55 | static void down_command PARAMS ((char *, int)); | |
56 | ||
57 | static void down_silently_base PARAMS ((char *)); | |
58 | ||
59 | static void down_silently_command PARAMS ((char *, int)); | |
60 | ||
61 | static void up_command PARAMS ((char *, int)); | |
62 | ||
63 | static void up_silently_base PARAMS ((char *)); | |
64 | ||
65 | static void up_silently_command PARAMS ((char *, int)); | |
66 | ||
67 | void frame_command PARAMS ((char *, int)); | |
68 | ||
7a292a7a SS |
69 | static void current_frame_command PARAMS ((char *, int)); |
70 | ||
c906108c SS |
71 | static void select_frame_command PARAMS ((char *, int)); |
72 | ||
73 | static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *)); | |
74 | ||
75 | static void catch_info PARAMS ((char *, int)); | |
76 | ||
77 | static void args_plus_locals_info PARAMS ((char *, int)); | |
78 | ||
79 | static void print_frame_label_vars PARAMS ((struct frame_info *, | |
80 | int, | |
81 | GDB_FILE *)); | |
82 | ||
83 | static void print_frame_local_vars PARAMS ((struct frame_info *, | |
84 | int, | |
85 | GDB_FILE *)); | |
86 | ||
87 | static int print_block_frame_labels PARAMS ((struct block *, int *, | |
88 | GDB_FILE *)); | |
89 | ||
90 | static int print_block_frame_locals PARAMS ((struct block *, | |
91 | struct frame_info *, | |
92 | int, | |
93 | GDB_FILE *)); | |
94 | ||
95 | static void print_frame_info_base PARAMS ((struct frame_info *, int, int, int)); | |
c5aa993b | 96 | |
c906108c SS |
97 | static void print_stack_frame_base PARAMS ((struct frame_info *, int, int)); |
98 | ||
99 | static void backtrace_command PARAMS ((char *, int)); | |
100 | ||
101 | struct frame_info *parse_frame_specification PARAMS ((char *)); | |
102 | ||
103 | static void frame_info PARAMS ((char *, int)); | |
104 | ||
105 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
106 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
107 | extern int lines_to_list; /* # of lines "list" command shows by default */ | |
108 | ||
109 | /* The "selected" stack frame is used by default for local and arg access. | |
110 | May be zero, for no selected frame. */ | |
111 | ||
112 | struct frame_info *selected_frame; | |
113 | ||
114 | /* Level of the selected frame: | |
115 | 0 for innermost, 1 for its caller, ... | |
116 | or -1 for frame specified by address with no defined level. */ | |
117 | ||
118 | int selected_frame_level; | |
119 | ||
120 | /* Zero means do things normally; we are interacting directly with the | |
121 | user. One means print the full filename and linenumber when a | |
122 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
123 | parse. Two means print similar annotations, but in many more | |
124 | cases and in a slightly different syntax. */ | |
125 | ||
126 | int annotation_level = 0; | |
c906108c | 127 | \f |
c5aa993b JM |
128 | |
129 | struct print_stack_frame_args | |
130 | { | |
131 | struct frame_info *fi; | |
132 | int level; | |
133 | int source; | |
134 | int args; | |
135 | }; | |
c906108c SS |
136 | |
137 | static int print_stack_frame_base_stub PARAMS ((char *)); | |
138 | ||
139 | /* Show and print the frame arguments. | |
140 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 141 | static int show_and_print_stack_frame_stub PARAMS ((void *args)); |
c906108c SS |
142 | static int |
143 | show_and_print_stack_frame_stub (args) | |
7a292a7a | 144 | void *args; |
c906108c | 145 | { |
c5aa993b | 146 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
147 | |
148 | /* Reversed order of these so tuiDo() doesn't occur | |
149 | * in the middle of "Breakpoint 1 ... [location]" printing = RT | |
150 | */ | |
151 | if (tui_version) | |
152 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
153 | print_frame_info (p->fi, p->level, p->source, p->args); | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | /* Show or print the frame arguments. | |
159 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 160 | static int print_stack_frame_stub PARAMS ((void *args)); |
c906108c SS |
161 | static int |
162 | print_stack_frame_stub (args) | |
7a292a7a | 163 | void *args; |
c906108c | 164 | { |
c5aa993b | 165 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
166 | |
167 | if (tui_version) | |
168 | print_frame_info (p->fi, p->level, p->source, p->args); | |
169 | else | |
170 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
175 | and LEVEL should be its level in the stack (or -1 for level not | |
176 | defined). */ | |
177 | ||
178 | /* Pass the args the way catch_errors wants them. */ | |
179 | static int | |
180 | print_stack_frame_base_stub (args) | |
181 | char *args; | |
182 | { | |
c5aa993b | 183 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
184 | |
185 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | /* print the frame arguments to the terminal. | |
190 | Pass the args the way catch_errors wants them. */ | |
7a292a7a | 191 | static int print_only_stack_frame_stub PARAMS ((void *)); |
c906108c SS |
192 | static int |
193 | print_only_stack_frame_stub (args) | |
7a292a7a | 194 | void *args; |
c906108c | 195 | { |
c5aa993b | 196 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
197 | |
198 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
199 | return 0; | |
200 | } | |
201 | ||
202 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
203 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
204 | This prints the level, the function executing, the arguments, | |
205 | and the file name and line number. | |
206 | If the pc is not at the beginning of the source line, | |
207 | the actual pc is printed at the beginning. | |
208 | ||
209 | If SOURCE is 1, print the source line as well. | |
210 | If SOURCE is -1, print ONLY the source line. */ | |
211 | ||
212 | static void | |
213 | print_stack_frame_base (fi, level, source) | |
214 | struct frame_info *fi; | |
215 | int level; | |
216 | int source; | |
217 | { | |
218 | struct print_stack_frame_args args; | |
219 | ||
220 | args.fi = fi; | |
221 | args.level = level; | |
222 | args.source = source; | |
223 | args.args = 1; | |
224 | ||
7a292a7a | 225 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
226 | } |
227 | ||
228 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
229 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
230 | This prints the level, the function executing, the arguments, | |
231 | and the file name and line number. | |
232 | If the pc is not at the beginning of the source line, | |
233 | the actual pc is printed at the beginning. | |
234 | ||
235 | If SOURCE is 1, print the source line as well. | |
236 | If SOURCE is -1, print ONLY the source line. */ | |
237 | ||
238 | void | |
239 | show_and_print_stack_frame (fi, level, source) | |
240 | struct frame_info *fi; | |
241 | int level; | |
242 | int source; | |
243 | { | |
244 | struct print_stack_frame_args args; | |
245 | ||
246 | args.fi = fi; | |
247 | args.level = level; | |
248 | args.source = source; | |
249 | args.args = 1; | |
250 | ||
7a292a7a | 251 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
252 | } |
253 | ||
254 | ||
255 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
256 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
257 | This prints the level, the function executing, the arguments, | |
258 | and the file name and line number. | |
259 | If the pc is not at the beginning of the source line, | |
260 | the actual pc is printed at the beginning. | |
261 | ||
262 | If SOURCE is 1, print the source line as well. | |
263 | If SOURCE is -1, print ONLY the source line. */ | |
264 | ||
265 | void | |
266 | print_stack_frame (fi, level, source) | |
267 | struct frame_info *fi; | |
268 | int level; | |
269 | int source; | |
270 | { | |
271 | struct print_stack_frame_args args; | |
272 | ||
273 | args.fi = fi; | |
274 | args.level = level; | |
275 | args.source = source; | |
276 | args.args = 1; | |
277 | ||
c5aa993b | 278 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
279 | } |
280 | ||
281 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
282 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
283 | This prints the level, the function executing, the arguments, | |
284 | and the file name and line number. | |
285 | If the pc is not at the beginning of the source line, | |
286 | the actual pc is printed at the beginning. | |
287 | ||
288 | If SOURCE is 1, print the source line as well. | |
289 | If SOURCE is -1, print ONLY the source line. */ | |
290 | ||
291 | void | |
292 | print_only_stack_frame (fi, level, source) | |
293 | struct frame_info *fi; | |
294 | int level; | |
295 | int source; | |
296 | { | |
297 | struct print_stack_frame_args args; | |
298 | ||
299 | args.fi = fi; | |
300 | args.level = level; | |
301 | args.source = source; | |
302 | args.args = 1; | |
303 | ||
7a292a7a | 304 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
305 | } |
306 | ||
c5aa993b JM |
307 | struct print_args_args |
308 | { | |
c906108c SS |
309 | struct symbol *func; |
310 | struct frame_info *fi; | |
ac9a91a7 | 311 | GDB_FILE *stream; |
c906108c SS |
312 | }; |
313 | ||
314 | static int print_args_stub PARAMS ((PTR)); | |
315 | ||
316 | /* Pass the args the way catch_errors wants them. */ | |
317 | ||
318 | static int | |
319 | print_args_stub (args) | |
320 | PTR args; | |
321 | { | |
322 | int numargs; | |
c5aa993b | 323 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 324 | |
392a587b | 325 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 326 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
327 | return 0; |
328 | } | |
329 | ||
330 | /* Print information about a frame for frame "fi" at level "level". | |
331 | * Used in "where" output, also used to emit breakpoint or step messages. | |
332 | * LEVEL is the level of the frame, or -1 if it is the innermost frame | |
333 | * but we don't want to print the level. | |
334 | * The meaning of the SOURCE argument is: | |
335 | * -1: Print only source line | |
336 | * 0: Print only location | |
337 | * 1: Print location and source line | |
338 | */ | |
339 | ||
340 | static void | |
341 | print_frame_info_base (fi, level, source, args) | |
342 | struct frame_info *fi; | |
343 | int level; | |
344 | int source; | |
345 | int args; | |
346 | { | |
347 | struct symtab_and_line sal; | |
348 | struct symbol *func; | |
349 | register char *funname = 0; | |
350 | enum language funlang = language_unknown; | |
351 | ||
352 | #if 0 | |
353 | char buf[MAX_REGISTER_RAW_SIZE]; | |
354 | CORE_ADDR sp; | |
355 | ||
356 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
357 | ||
358 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
359 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
360 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
361 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
362 | ||
363 | /* This is not a perfect test, because if a function alloca's some | |
364 | memory, puts some code there, and then jumps into it, then the test | |
365 | will succeed even though there is no call dummy. Probably best is | |
366 | to check for a bp_call_dummy breakpoint. */ | |
367 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
368 | #else | |
369 | if (frame_in_dummy (fi)) | |
370 | #endif | |
371 | { | |
372 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
373 | ||
374 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 375 | to list for this frame. */ |
c906108c SS |
376 | if (level >= 0) |
377 | printf_filtered ("#%-2d ", level); | |
378 | annotate_function_call (); | |
379 | printf_filtered ("<function called from gdb>\n"); | |
380 | annotate_frame_end (); | |
381 | return; | |
382 | } | |
383 | if (fi->signal_handler_caller) | |
384 | { | |
385 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
386 | ||
387 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 388 | to list for this frame. */ |
c906108c SS |
389 | if (level >= 0) |
390 | printf_filtered ("#%-2d ", level); | |
391 | annotate_signal_handler_caller (); | |
392 | printf_filtered ("<signal handler called>\n"); | |
393 | annotate_frame_end (); | |
394 | return; | |
395 | } | |
396 | ||
397 | /* If fi is not the innermost frame, that normally means that fi->pc | |
398 | points to *after* the call instruction, and we want to get the line | |
399 | containing the call, never the next line. But if the next frame is | |
400 | a signal_handler_caller or a dummy frame, then the next frame was | |
401 | not entered as the result of a call, and we want to get the line | |
402 | containing fi->pc. */ | |
403 | sal = | |
404 | find_pc_line (fi->pc, | |
405 | fi->next != NULL | |
406 | && !fi->next->signal_handler_caller | |
407 | && !frame_in_dummy (fi->next)); | |
408 | ||
409 | func = find_pc_function (fi->pc); | |
410 | if (func) | |
411 | { | |
412 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
413 | function (when we are in the first function in a file which |
414 | is compiled without debugging symbols, the previous function | |
415 | is compiled with debugging symbols, and the "foo.o" symbol | |
416 | that is supposed to tell us where the file with debugging symbols | |
417 | ends has been truncated by ar because it is longer than 15 | |
418 | characters). This also occurs if the user uses asm() to create | |
419 | a function but not stabs for it (in a file compiled -g). | |
420 | ||
421 | So look in the minimal symbol tables as well, and if it comes | |
422 | up with a larger address for the function use that instead. | |
423 | I don't think this can ever cause any problems; there shouldn't | |
424 | be any minimal symbols in the middle of a function; if this is | |
425 | ever changed many parts of GDB will need to be changed (and we'll | |
426 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
427 | |
428 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
429 | if (msymbol != NULL | |
c5aa993b | 430 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
431 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
432 | { | |
433 | #if 0 | |
434 | /* There is no particular reason to think the line number | |
435 | information is wrong. Someone might have just put in | |
436 | a label with asm() but left the line numbers alone. */ | |
437 | /* In this case we have no way of knowing the source file | |
438 | and line number, so don't print them. */ | |
439 | sal.symtab = 0; | |
440 | #endif | |
441 | /* We also don't know anything about the function besides | |
442 | its address and name. */ | |
443 | func = 0; | |
444 | funname = SYMBOL_NAME (msymbol); | |
445 | funlang = SYMBOL_LANGUAGE (msymbol); | |
446 | } | |
447 | else | |
448 | { | |
c5aa993b JM |
449 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display |
450 | * the demangled name that we already have stored in | |
451 | * the symbol table, but we stored a version with | |
452 | * DMGL_PARAMS turned on, and here we don't want | |
453 | * to display parameters. So call the demangler again, | |
454 | * with DMGL_ANSI only. RT | |
455 | * (Yes, I know that printf_symbol_filtered() will | |
456 | * again try to demangle the name on the fly, but | |
457 | * the issue is that if cplus_demangle() fails here, | |
458 | * it'll fail there too. So we want to catch the failure | |
459 | * ("demangled==NULL" case below) here, while we still | |
460 | * have our hands on the function symbol.) | |
461 | */ | |
462 | char *demangled; | |
c906108c SS |
463 | funname = SYMBOL_NAME (func); |
464 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
465 | if (funlang == language_cplus) |
466 | { | |
467 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
468 | if (demangled == NULL) | |
469 | /* If the demangler fails, try the demangled name | |
470 | * from the symbol table. This'll have parameters, | |
471 | * but that's preferable to diplaying a mangled name. | |
472 | */ | |
473 | funname = SYMBOL_SOURCE_NAME (func); | |
474 | } | |
c906108c SS |
475 | } |
476 | } | |
477 | else | |
478 | { | |
479 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
480 | if (msymbol != NULL) | |
481 | { | |
482 | funname = SYMBOL_NAME (msymbol); | |
483 | funlang = SYMBOL_LANGUAGE (msymbol); | |
484 | } | |
485 | } | |
486 | ||
487 | if (source >= 0 || !sal.symtab) | |
488 | { | |
489 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
490 | ||
491 | if (level >= 0) | |
492 | printf_filtered ("#%-2d ", level); | |
493 | if (addressprint) | |
494 | if (fi->pc != sal.pc || !sal.symtab) | |
495 | { | |
496 | annotate_frame_address (); | |
497 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
498 | annotate_frame_address_end (); | |
499 | printf_filtered (" in "); | |
500 | } | |
501 | annotate_frame_function_name (); | |
502 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, | |
503 | DMGL_ANSI); | |
504 | wrap_here (" "); | |
505 | annotate_frame_args (); | |
506 | fputs_filtered (" (", gdb_stdout); | |
507 | if (args) | |
508 | { | |
509 | struct print_args_args args; | |
510 | args.fi = fi; | |
511 | args.func = func; | |
ac9a91a7 | 512 | args.stream = gdb_stdout; |
c906108c SS |
513 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
514 | QUIT; | |
515 | } | |
516 | printf_filtered (")"); | |
517 | if (sal.symtab && sal.symtab->filename) | |
518 | { | |
519 | annotate_frame_source_begin (); | |
c5aa993b | 520 | wrap_here (" "); |
c906108c SS |
521 | printf_filtered (" at "); |
522 | annotate_frame_source_file (); | |
523 | printf_filtered ("%s", sal.symtab->filename); | |
524 | annotate_frame_source_file_end (); | |
525 | printf_filtered (":"); | |
526 | annotate_frame_source_line (); | |
527 | printf_filtered ("%d", sal.line); | |
528 | annotate_frame_source_end (); | |
529 | } | |
530 | ||
531 | #ifdef PC_LOAD_SEGMENT | |
c5aa993b JM |
532 | /* If we couldn't print out function name but if can figure out what |
533 | load segment this pc value is from, at least print out some info | |
534 | about its load segment. */ | |
c906108c SS |
535 | if (!funname) |
536 | { | |
537 | annotate_frame_where (); | |
538 | wrap_here (" "); | |
539 | printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc)); | |
540 | } | |
541 | #endif | |
542 | #ifdef PC_SOLIB | |
543 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
544 | { | |
545 | char *lib = PC_SOLIB (fi->pc); | |
546 | if (lib) | |
547 | { | |
548 | annotate_frame_where (); | |
549 | wrap_here (" "); | |
550 | printf_filtered (" from %s", lib); | |
551 | } | |
552 | } | |
553 | #endif | |
554 | printf_filtered ("\n"); | |
555 | } | |
556 | ||
557 | if ((source != 0) && sal.symtab) | |
558 | { | |
559 | int done = 0; | |
560 | int mid_statement = source < 0 && fi->pc != sal.pc; | |
561 | if (annotation_level) | |
562 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
563 | fi->pc); | |
564 | if (!done) | |
565 | { | |
566 | if (addressprint && mid_statement && !tui_version) | |
567 | { | |
568 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
569 | printf_filtered ("\t"); | |
570 | } | |
571 | if (print_frame_info_listing_hook) | |
572 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
573 | else if (!tui_version) | |
574 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
575 | } | |
c5aa993b | 576 | current_source_line = max (sal.line - lines_to_list / 2, 1); |
c906108c SS |
577 | } |
578 | if (source != 0) | |
579 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
580 | ||
581 | annotate_frame_end (); | |
582 | ||
583 | gdb_flush (gdb_stdout); | |
584 | } | |
585 | \f | |
586 | ||
7a292a7a | 587 | #if 0 |
c906108c | 588 | void |
c5aa993b | 589 | stack_publish_stopped_with_no_frame () |
c906108c | 590 | { |
c5aa993b | 591 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateOnEnd)); |
c906108c SS |
592 | |
593 | return; | |
594 | } | |
7a292a7a | 595 | #endif |
c906108c SS |
596 | |
597 | /* Show or print the frame info. If this is the tui, it will be shown in | |
598 | the source display */ | |
599 | void | |
c5aa993b | 600 | print_frame_info (fi, level, source, args) |
c906108c SS |
601 | struct frame_info *fi; |
602 | register int level; | |
603 | int source; | |
604 | int args; | |
605 | { | |
606 | if (!tui_version) | |
c5aa993b | 607 | print_frame_info_base (fi, level, source, args); |
c906108c | 608 | else |
c5aa993b JM |
609 | { |
610 | if (fi && (frame_in_dummy (fi) || fi->signal_handler_caller)) | |
611 | print_frame_info_base (fi, level, source, args); | |
612 | else | |
613 | { | |
614 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); | |
615 | } | |
616 | } | |
c906108c SS |
617 | } |
618 | ||
619 | /* Show the frame info. If this is the tui, it will be shown in | |
620 | the source display otherwise, nothing is done */ | |
621 | void | |
c5aa993b | 622 | show_stack_frame (fi) |
c906108c SS |
623 | struct frame_info *fi; |
624 | { | |
c5aa993b | 625 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); |
c906108c | 626 | } |
c906108c | 627 | \f |
c5aa993b | 628 | |
c906108c SS |
629 | /* Read a frame specification in whatever the appropriate format is. |
630 | Call error() if the specification is in any way invalid (i.e. | |
631 | this function never returns NULL). */ | |
632 | ||
633 | struct frame_info * | |
634 | parse_frame_specification (frame_exp) | |
635 | char *frame_exp; | |
636 | { | |
637 | int numargs = 0; | |
638 | #define MAXARGS 4 | |
639 | CORE_ADDR args[MAXARGS]; | |
c5aa993b | 640 | |
c906108c SS |
641 | if (frame_exp) |
642 | { | |
643 | char *addr_string, *p; | |
644 | struct cleanup *tmp_cleanup; | |
645 | ||
c5aa993b JM |
646 | while (*frame_exp == ' ') |
647 | frame_exp++; | |
c906108c SS |
648 | |
649 | while (*frame_exp) | |
650 | { | |
651 | if (numargs > MAXARGS) | |
652 | error ("Too many args in frame specification"); | |
653 | /* Parse an argument. */ | |
c5aa993b | 654 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 655 | ; |
c5aa993b | 656 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
657 | |
658 | { | |
659 | tmp_cleanup = make_cleanup (free, addr_string); | |
660 | args[numargs++] = parse_and_eval_address (addr_string); | |
661 | do_cleanups (tmp_cleanup); | |
662 | } | |
663 | ||
664 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
665 | while (*p == ' ') |
666 | p++; | |
c906108c SS |
667 | frame_exp = p; |
668 | } | |
669 | } | |
670 | ||
671 | switch (numargs) | |
672 | { | |
673 | case 0: | |
674 | if (selected_frame == NULL) | |
675 | error ("No selected frame."); | |
676 | return selected_frame; | |
677 | /* NOTREACHED */ | |
678 | case 1: | |
679 | { | |
680 | int level = args[0]; | |
681 | struct frame_info *fid = | |
c5aa993b | 682 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
683 | struct frame_info *tfid; |
684 | ||
685 | if (level == 0) | |
686 | /* find_relative_frame was successful */ | |
687 | return fid; | |
688 | ||
689 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
690 | take at least 2 addresses. It is important to detect this case | |
691 | here so that "frame 100" does not give a confusing error message | |
692 | like "frame specification requires two addresses". This of course | |
693 | does not solve the "frame 100" problem for machines on which | |
694 | a frame specification can be made with one address. To solve | |
695 | that, we need a new syntax for a specifying a frame by address. | |
696 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
697 | two args, etc.), but people might think that is too much typing, | |
698 | so I guess *0x23,0x45 would be a possible alternative (commas | |
699 | really should be used instead of spaces to delimit; using spaces | |
700 | normally works in an expression). */ | |
701 | #ifdef SETUP_ARBITRARY_FRAME | |
702 | error ("No frame %d", args[0]); | |
703 | #endif | |
704 | ||
705 | /* If (s)he specifies the frame with an address, he deserves what | |
706 | (s)he gets. Still, give the highest one that matches. */ | |
707 | ||
708 | for (fid = get_current_frame (); | |
709 | fid && fid->frame != args[0]; | |
710 | fid = get_prev_frame (fid)) | |
711 | ; | |
712 | ||
713 | if (fid) | |
714 | while ((tfid = get_prev_frame (fid)) && | |
715 | (tfid->frame == args[0])) | |
716 | fid = tfid; | |
c5aa993b | 717 | |
c906108c SS |
718 | /* We couldn't identify the frame as an existing frame, but |
719 | perhaps we can create one with a single argument. */ | |
720 | } | |
721 | ||
c5aa993b | 722 | default: |
c906108c SS |
723 | #ifdef SETUP_ARBITRARY_FRAME |
724 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
725 | #else | |
726 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 727 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
728 | if (numargs == 1) |
729 | return create_new_frame (args[0], 0); | |
730 | error ("Too many args in frame specification"); | |
731 | #endif | |
732 | /* NOTREACHED */ | |
733 | } | |
734 | /* NOTREACHED */ | |
735 | } | |
736 | ||
737 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
738 | that if it is unsure about the answer, it returns 0 | |
739 | instead of guessing (this happens on the VAX and i960, for example). | |
740 | ||
741 | On most machines, we never have to guess about the args address, | |
742 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
743 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
744 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
745 | #endif | |
746 | ||
747 | /* Print verbosely the selected frame or the frame at address ADDR. | |
748 | This means absolutely all information in the frame is printed. */ | |
749 | ||
750 | static void | |
751 | frame_info (addr_exp, from_tty) | |
752 | char *addr_exp; | |
753 | int from_tty; | |
754 | { | |
755 | struct frame_info *fi; | |
756 | struct symtab_and_line sal; | |
757 | struct symbol *func; | |
758 | struct symtab *s; | |
759 | struct frame_info *calling_frame_info; | |
760 | int i, count, numregs; | |
761 | char *funname = 0; | |
762 | enum language funlang = language_unknown; | |
763 | ||
764 | if (!target_has_stack) | |
765 | error ("No stack."); | |
766 | ||
767 | fi = parse_frame_specification (addr_exp); | |
768 | if (fi == NULL) | |
769 | error ("Invalid frame specified."); | |
770 | ||
771 | sal = find_pc_line (fi->pc, | |
772 | fi->next != NULL | |
773 | && !fi->next->signal_handler_caller | |
774 | && !frame_in_dummy (fi->next)); | |
775 | func = get_frame_function (fi); | |
c5aa993b | 776 | s = find_pc_symtab (fi->pc); |
c906108c SS |
777 | if (func) |
778 | { | |
779 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
780 | * the demangled name that we already have stored in | |
781 | * the symbol table, but we stored a version with | |
782 | * DMGL_PARAMS turned on, and here we don't want | |
783 | * to display parameters. So call the demangler again, | |
784 | * with DMGL_ANSI only. RT | |
785 | * (Yes, I know that printf_symbol_filtered() will | |
786 | * again try to demangle the name on the fly, but | |
787 | * the issue is that if cplus_demangle() fails here, | |
788 | * it'll fail there too. So we want to catch the failure | |
789 | * ("demangled==NULL" case below) here, while we still | |
790 | * have our hands on the function symbol.) | |
791 | */ | |
c5aa993b JM |
792 | char *demangled; |
793 | funname = SYMBOL_NAME (func); | |
794 | funlang = SYMBOL_LANGUAGE (func); | |
795 | if (funlang == language_cplus) | |
796 | { | |
797 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
798 | /* If the demangler fails, try the demangled name | |
799 | * from the symbol table. This'll have parameters, | |
800 | * but that's preferable to diplaying a mangled name. | |
801 | */ | |
802 | if (demangled == NULL) | |
803 | funname = SYMBOL_SOURCE_NAME (func); | |
804 | } | |
c906108c SS |
805 | } |
806 | else | |
807 | { | |
808 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
809 | if (msymbol != NULL) | |
810 | { | |
811 | funname = SYMBOL_NAME (msymbol); | |
812 | funlang = SYMBOL_LANGUAGE (msymbol); | |
813 | } | |
814 | } | |
815 | calling_frame_info = get_prev_frame (fi); | |
816 | ||
817 | if (!addr_exp && selected_frame_level >= 0) | |
818 | { | |
819 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
820 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
821 | printf_filtered (":\n"); | |
822 | } | |
823 | else | |
824 | { | |
825 | printf_filtered ("Stack frame at "); | |
826 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
827 | printf_filtered (":\n"); | |
828 | } | |
829 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
830 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
831 | ||
832 | wrap_here (" "); | |
833 | if (funname) | |
834 | { | |
835 | printf_filtered (" in "); | |
836 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
837 | DMGL_ANSI | DMGL_PARAMS); | |
838 | } | |
839 | wrap_here (" "); | |
840 | if (sal.symtab) | |
841 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
842 | puts_filtered ("; "); | |
843 | wrap_here (" "); | |
844 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
845 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
846 | printf_filtered ("\n"); | |
847 | ||
848 | { | |
392a587b JM |
849 | int frameless; |
850 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
851 | if (frameless) |
852 | printf_filtered (" (FRAMELESS),"); | |
853 | } | |
854 | ||
855 | if (calling_frame_info) | |
856 | { | |
857 | printf_filtered (" called by frame at "); | |
858 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
859 | } | |
860 | if (fi->next && calling_frame_info) | |
861 | puts_filtered (","); | |
862 | wrap_here (" "); | |
863 | if (fi->next) | |
864 | { | |
865 | printf_filtered (" caller of frame at "); | |
866 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
867 | } | |
868 | if (fi->next || calling_frame_info) | |
869 | puts_filtered ("\n"); | |
870 | if (s) | |
871 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
872 | ||
873 | #ifdef PRINT_EXTRA_FRAME_INFO | |
874 | PRINT_EXTRA_FRAME_INFO (fi); | |
875 | #endif | |
876 | ||
877 | { | |
878 | /* Address of the argument list for this frame, or 0. */ | |
879 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
880 | /* Number of args for this frame, or -1 if unknown. */ | |
881 | int numargs; | |
882 | ||
883 | if (arg_list == 0) | |
884 | printf_filtered (" Arglist at unknown address.\n"); | |
885 | else | |
886 | { | |
887 | printf_filtered (" Arglist at "); | |
888 | print_address_numeric (arg_list, 1, gdb_stdout); | |
889 | printf_filtered (","); | |
890 | ||
392a587b | 891 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
892 | if (numargs < 0) |
893 | puts_filtered (" args: "); | |
894 | else if (numargs == 0) | |
895 | puts_filtered (" no args."); | |
896 | else if (numargs == 1) | |
897 | puts_filtered (" 1 arg: "); | |
898 | else | |
899 | printf_filtered (" %d args: ", numargs); | |
900 | print_frame_args (func, fi, numargs, gdb_stdout); | |
901 | puts_filtered ("\n"); | |
902 | } | |
903 | } | |
904 | { | |
905 | /* Address of the local variables for this frame, or 0. */ | |
906 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
907 | ||
908 | if (arg_list == 0) | |
909 | printf_filtered (" Locals at unknown address,"); | |
910 | else | |
911 | { | |
912 | printf_filtered (" Locals at "); | |
913 | print_address_numeric (arg_list, 1, gdb_stdout); | |
914 | printf_filtered (","); | |
915 | } | |
916 | } | |
917 | ||
918 | FRAME_INIT_SAVED_REGS (fi); | |
919 | if (fi->saved_regs != NULL) | |
920 | { | |
921 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 922 | actually the value of the previous frame's sp. */ |
c906108c SS |
923 | printf_filtered (" Previous frame's sp is "); |
924 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
925 | printf_filtered ("\n"); | |
926 | count = 0; | |
927 | numregs = ARCH_NUM_REGS; | |
928 | for (i = 0; i < numregs; i++) | |
929 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
930 | { | |
931 | if (count == 0) | |
932 | puts_filtered (" Saved registers:\n "); | |
933 | else | |
934 | puts_filtered (","); | |
935 | wrap_here (" "); | |
936 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
937 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
938 | count++; | |
939 | } | |
940 | if (count) | |
941 | puts_filtered ("\n"); | |
942 | } | |
943 | else | |
944 | { | |
945 | /* We could get some information about saved registers by | |
c5aa993b JM |
946 | calling get_saved_register on each register. Which info goes |
947 | with which frame is necessarily lost, however, and I suspect | |
948 | that the users don't care whether they get the info. */ | |
c906108c SS |
949 | puts_filtered ("\n"); |
950 | } | |
951 | } | |
952 | ||
953 | #if 0 | |
954 | /* Set a limit on the number of frames printed by default in a | |
955 | backtrace. */ | |
956 | ||
957 | static int backtrace_limit; | |
958 | ||
959 | static void | |
960 | set_backtrace_limit_command (count_exp, from_tty) | |
961 | char *count_exp; | |
962 | int from_tty; | |
963 | { | |
964 | int count = parse_and_eval_address (count_exp); | |
965 | ||
966 | if (count < 0) | |
967 | error ("Negative argument not meaningful as backtrace limit."); | |
968 | ||
969 | backtrace_limit = count; | |
970 | } | |
971 | ||
972 | static void | |
973 | backtrace_limit_info (arg, from_tty) | |
974 | char *arg; | |
975 | int from_tty; | |
976 | { | |
977 | if (arg) | |
978 | error ("\"Info backtrace-limit\" takes no arguments."); | |
979 | ||
980 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
981 | } | |
982 | #endif | |
983 | ||
984 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
985 | ||
7a292a7a | 986 | static void backtrace_command_1 PARAMS ((char *count_exp, int show_locals, int from_tty)); |
c906108c SS |
987 | static void |
988 | backtrace_command_1 (count_exp, show_locals, from_tty) | |
989 | char *count_exp; | |
990 | int show_locals; | |
991 | int from_tty; | |
992 | { | |
993 | struct frame_info *fi; | |
994 | register int count; | |
995 | register int i; | |
996 | register struct frame_info *trailing; | |
997 | register int trailing_level; | |
998 | ||
999 | if (!target_has_stack) | |
1000 | error ("No stack."); | |
1001 | ||
1002 | /* The following code must do two things. First, it must | |
1003 | set the variable TRAILING to the frame from which we should start | |
1004 | printing. Second, it must set the variable count to the number | |
1005 | of frames which we should print, or -1 if all of them. */ | |
1006 | trailing = get_current_frame (); | |
1007 | trailing_level = 0; | |
1008 | if (count_exp) | |
1009 | { | |
1010 | count = parse_and_eval_address (count_exp); | |
1011 | if (count < 0) | |
1012 | { | |
1013 | struct frame_info *current; | |
1014 | ||
1015 | count = -count; | |
1016 | ||
1017 | current = trailing; | |
1018 | while (current && count--) | |
1019 | { | |
1020 | QUIT; | |
1021 | current = get_prev_frame (current); | |
1022 | } | |
c5aa993b | 1023 | |
c906108c SS |
1024 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1025 | will be COUNT below it. */ | |
1026 | while (current) | |
1027 | { | |
1028 | QUIT; | |
1029 | trailing = get_prev_frame (trailing); | |
1030 | current = get_prev_frame (current); | |
1031 | trailing_level++; | |
1032 | } | |
c5aa993b | 1033 | |
c906108c SS |
1034 | count = -1; |
1035 | } | |
1036 | } | |
1037 | else | |
1038 | count = -1; | |
1039 | ||
1040 | if (info_verbose) | |
1041 | { | |
1042 | struct partial_symtab *ps; | |
c5aa993b | 1043 | |
c906108c | 1044 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1045 | a separate pass so that "Reading in symbols for xxx" messages |
1046 | don't screw up the appearance of the backtrace. Also | |
1047 | if people have strong opinions against reading symbols for | |
1048 | backtrace this may have to be an option. */ | |
c906108c SS |
1049 | i = count; |
1050 | for (fi = trailing; | |
1051 | fi != NULL && i--; | |
1052 | fi = get_prev_frame (fi)) | |
1053 | { | |
1054 | QUIT; | |
1055 | ps = find_pc_psymtab (fi->pc); | |
1056 | if (ps) | |
1057 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | for (i = 0, fi = trailing; | |
1062 | fi && count--; | |
1063 | i++, fi = get_prev_frame (fi)) | |
1064 | { | |
1065 | QUIT; | |
1066 | ||
1067 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1068 | means further attempts to backtrace would fail (on the other |
1069 | hand, perhaps the code does or could be fixed to make sure | |
1070 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1071 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1072 | if (show_locals) | |
c5aa993b | 1073 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1074 | } |
1075 | ||
1076 | /* If we've stopped before the end, mention that. */ | |
1077 | if (fi && from_tty) | |
1078 | printf_filtered ("(More stack frames follow...)\n"); | |
1079 | } | |
1080 | ||
1081 | static void | |
1082 | backtrace_command (arg, from_tty) | |
1083 | char *arg; | |
1084 | int from_tty; | |
1085 | { | |
c5aa993b JM |
1086 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1087 | char **argv = (char **) NULL; | |
1088 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1089 | char *argPtr = arg; | |
c906108c | 1090 | |
c5aa993b | 1091 | if (arg != (char *) NULL) |
c906108c SS |
1092 | { |
1093 | int i; | |
1094 | ||
c5aa993b | 1095 | argv = buildargv (arg); |
7a292a7a | 1096 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1097 | argc = 0; |
c5aa993b JM |
1098 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1099 | { | |
1100 | int j; | |
1101 | ||
1102 | for (j = 0; (j < strlen (argv[i])); j++) | |
1103 | argv[i][j] = tolower (argv[i][j]); | |
1104 | ||
1105 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1106 | argIndicatingFullTrace = argc; | |
1107 | else | |
1108 | { | |
1109 | argc++; | |
1110 | totArgLen += strlen (argv[i]); | |
1111 | } | |
1112 | } | |
c906108c SS |
1113 | totArgLen += argc; |
1114 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1115 | { |
1116 | if (totArgLen > 0) | |
1117 | { | |
1118 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1119 | if (!argPtr) | |
1120 | nomem (0); | |
1121 | else | |
1122 | { | |
1123 | memset (argPtr, 0, totArgLen + 1); | |
1124 | for (i = 0; (i < (argc + 1)); i++) | |
1125 | { | |
1126 | if (i != argIndicatingFullTrace) | |
1127 | { | |
1128 | strcat (argPtr, argv[i]); | |
1129 | strcat (argPtr, " "); | |
1130 | } | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | else | |
1135 | argPtr = (char *) NULL; | |
1136 | } | |
c906108c SS |
1137 | } |
1138 | ||
1139 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1140 | ||
1141 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
c5aa993b | 1142 | free (argPtr); |
c906108c SS |
1143 | |
1144 | if (old_chain) | |
c5aa993b | 1145 | do_cleanups (old_chain); |
c906108c SS |
1146 | } |
1147 | ||
7a292a7a | 1148 | static void backtrace_full_command PARAMS ((char *arg, int from_tty)); |
c906108c SS |
1149 | static void |
1150 | backtrace_full_command (arg, from_tty) | |
1151 | char *arg; | |
1152 | int from_tty; | |
1153 | { | |
1154 | backtrace_command_1 (arg, 1, from_tty); | |
1155 | } | |
c906108c | 1156 | \f |
c5aa993b | 1157 | |
c906108c SS |
1158 | /* Print the local variables of a block B active in FRAME. |
1159 | Return 1 if any variables were printed; 0 otherwise. */ | |
1160 | ||
1161 | static int | |
1162 | print_block_frame_locals (b, fi, num_tabs, stream) | |
1163 | struct block *b; | |
1164 | register struct frame_info *fi; | |
1165 | int num_tabs; | |
1166 | register GDB_FILE *stream; | |
1167 | { | |
1168 | int nsyms; | |
1169 | register int i, j; | |
1170 | register struct symbol *sym; | |
1171 | register int values_printed = 0; | |
1172 | ||
1173 | nsyms = BLOCK_NSYMS (b); | |
1174 | ||
1175 | for (i = 0; i < nsyms; i++) | |
1176 | { | |
1177 | sym = BLOCK_SYM (b, i); | |
1178 | switch (SYMBOL_CLASS (sym)) | |
1179 | { | |
1180 | case LOC_LOCAL: | |
1181 | case LOC_REGISTER: | |
1182 | case LOC_STATIC: | |
1183 | case LOC_BASEREG: | |
1184 | values_printed = 1; | |
1185 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1186 | fputs_filtered ("\t", stream); |
c906108c SS |
1187 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1188 | fputs_filtered (" = ", stream); | |
1189 | print_variable_value (sym, fi, stream); | |
1190 | fprintf_filtered (stream, "\n"); | |
1191 | break; | |
1192 | ||
1193 | default: | |
1194 | /* Ignore symbols which are not locals. */ | |
1195 | break; | |
1196 | } | |
1197 | } | |
1198 | return values_printed; | |
1199 | } | |
1200 | ||
1201 | /* Same, but print labels. */ | |
1202 | ||
1203 | static int | |
1204 | print_block_frame_labels (b, have_default, stream) | |
1205 | struct block *b; | |
1206 | int *have_default; | |
1207 | register GDB_FILE *stream; | |
1208 | { | |
1209 | int nsyms; | |
1210 | register int i; | |
1211 | register struct symbol *sym; | |
1212 | register int values_printed = 0; | |
1213 | ||
1214 | nsyms = BLOCK_NSYMS (b); | |
1215 | ||
1216 | for (i = 0; i < nsyms; i++) | |
1217 | { | |
1218 | sym = BLOCK_SYM (b, i); | |
1219 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
1220 | { | |
1221 | if (*have_default) | |
1222 | continue; | |
1223 | *have_default = 1; | |
1224 | } | |
1225 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1226 | { | |
1227 | struct symtab_and_line sal; | |
1228 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1229 | values_printed = 1; | |
1230 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1231 | if (addressprint) | |
1232 | { | |
1233 | fprintf_filtered (stream, " "); | |
1234 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1235 | } | |
1236 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1237 | sal.symtab->filename, sal.line); | |
1238 | } | |
1239 | } | |
1240 | return values_printed; | |
1241 | } | |
1242 | ||
1243 | /* Print on STREAM all the local variables in frame FRAME, | |
1244 | including all the blocks active in that frame | |
1245 | at its current pc. | |
1246 | ||
1247 | Returns 1 if the job was done, | |
1248 | or 0 if nothing was printed because we have no info | |
1249 | on the function running in FRAME. */ | |
1250 | ||
1251 | static void | |
1252 | print_frame_local_vars (fi, num_tabs, stream) | |
1253 | register struct frame_info *fi; | |
1254 | register int num_tabs; | |
1255 | register GDB_FILE *stream; | |
1256 | { | |
1257 | register struct block *block = get_frame_block (fi); | |
1258 | register int values_printed = 0; | |
1259 | ||
1260 | if (block == 0) | |
1261 | { | |
1262 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1263 | return; | |
1264 | } | |
c5aa993b | 1265 | |
c906108c SS |
1266 | while (block != 0) |
1267 | { | |
1268 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1269 | values_printed = 1; | |
1270 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1271 | Don't continue to its superblock, the block of |
1272 | per-file symbols. */ | |
c906108c SS |
1273 | if (BLOCK_FUNCTION (block)) |
1274 | break; | |
1275 | block = BLOCK_SUPERBLOCK (block); | |
1276 | } | |
1277 | ||
1278 | if (!values_printed) | |
1279 | { | |
1280 | fprintf_filtered (stream, "No locals.\n"); | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | /* Same, but print labels. */ | |
1285 | ||
1286 | static void | |
1287 | print_frame_label_vars (fi, this_level_only, stream) | |
1288 | register struct frame_info *fi; | |
1289 | int this_level_only; | |
1290 | register GDB_FILE *stream; | |
1291 | { | |
1292 | register struct blockvector *bl; | |
1293 | register struct block *block = get_frame_block (fi); | |
1294 | register int values_printed = 0; | |
1295 | int index, have_default = 0; | |
1296 | char *blocks_printed; | |
1297 | CORE_ADDR pc = fi->pc; | |
1298 | ||
1299 | if (block == 0) | |
1300 | { | |
1301 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1302 | return; | |
1303 | } | |
1304 | ||
1305 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1306 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1307 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1308 | ||
1309 | while (block != 0) | |
1310 | { | |
1311 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1312 | int last_index; | |
1313 | ||
1314 | if (bl != blockvector_for_pc (end, &index)) | |
1315 | error ("blockvector blotch"); | |
1316 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1317 | error ("blockvector botch"); | |
1318 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1319 | index += 1; | |
1320 | ||
1321 | /* Don't print out blocks that have gone by. */ | |
1322 | while (index < last_index | |
1323 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1324 | index++; | |
1325 | ||
1326 | while (index < last_index | |
1327 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1328 | { | |
1329 | if (blocks_printed[index] == 0) | |
1330 | { | |
1331 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1332 | values_printed = 1; | |
1333 | blocks_printed[index] = 1; | |
1334 | } | |
1335 | index++; | |
1336 | } | |
1337 | if (have_default) | |
1338 | return; | |
1339 | if (values_printed && this_level_only) | |
1340 | return; | |
1341 | ||
1342 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1343 | Don't continue to its superblock, the block of |
1344 | per-file symbols. */ | |
c906108c SS |
1345 | if (BLOCK_FUNCTION (block)) |
1346 | break; | |
1347 | block = BLOCK_SUPERBLOCK (block); | |
1348 | } | |
1349 | ||
1350 | if (!values_printed && !this_level_only) | |
1351 | { | |
1352 | fprintf_filtered (stream, "No catches.\n"); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | /* ARGSUSED */ | |
1357 | void | |
1358 | locals_info (args, from_tty) | |
1359 | char *args; | |
1360 | int from_tty; | |
1361 | { | |
1362 | if (!selected_frame) | |
1363 | error ("No frame selected."); | |
1364 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1365 | } | |
1366 | ||
1367 | static void | |
1368 | catch_info (ignore, from_tty) | |
1369 | char *ignore; | |
1370 | int from_tty; | |
1371 | { | |
c5aa993b | 1372 | struct symtab_and_line *sal; |
c906108c | 1373 | |
c5aa993b | 1374 | /* Check for target support for exception handling */ |
c906108c SS |
1375 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1376 | if (sal) | |
1377 | { | |
1378 | /* Currently not handling this */ | |
1379 | /* Ideally, here we should interact with the C++ runtime | |
1380 | system to find the list of active handlers, etc. */ | |
1381 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1382 | #if 0 | |
c5aa993b JM |
1383 | if (!selected_frame) |
1384 | error ("No frame selected."); | |
c906108c SS |
1385 | #endif |
1386 | } | |
1387 | else | |
1388 | { | |
c5aa993b | 1389 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1390 | if (!selected_frame) |
c5aa993b JM |
1391 | error ("No frame selected."); |
1392 | ||
c906108c SS |
1393 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1394 | } | |
1395 | } | |
1396 | ||
1397 | static void | |
1398 | print_frame_arg_vars (fi, stream) | |
1399 | register struct frame_info *fi; | |
1400 | register GDB_FILE *stream; | |
1401 | { | |
1402 | struct symbol *func = get_frame_function (fi); | |
1403 | register struct block *b; | |
1404 | int nsyms; | |
1405 | register int i; | |
1406 | register struct symbol *sym, *sym2; | |
1407 | register int values_printed = 0; | |
1408 | ||
1409 | if (func == 0) | |
1410 | { | |
1411 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1412 | return; | |
1413 | } | |
1414 | ||
1415 | b = SYMBOL_BLOCK_VALUE (func); | |
1416 | nsyms = BLOCK_NSYMS (b); | |
1417 | ||
1418 | for (i = 0; i < nsyms; i++) | |
1419 | { | |
1420 | sym = BLOCK_SYM (b, i); | |
1421 | switch (SYMBOL_CLASS (sym)) | |
1422 | { | |
1423 | case LOC_ARG: | |
1424 | case LOC_LOCAL_ARG: | |
1425 | case LOC_REF_ARG: | |
1426 | case LOC_REGPARM: | |
1427 | case LOC_REGPARM_ADDR: | |
1428 | case LOC_BASEREG_ARG: | |
1429 | values_printed = 1; | |
1430 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1431 | fputs_filtered (" = ", stream); | |
1432 | ||
1433 | /* We have to look up the symbol because arguments can have | |
1434 | two entries (one a parameter, one a local) and the one we | |
1435 | want is the local, which lookup_symbol will find for us. | |
1436 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1437 | small structure and gcc2 when the argument type is float | |
1438 | and it is passed as a double and converted to float by | |
1439 | the prologue (in the latter case the type of the LOC_ARG | |
1440 | symbol is double and the type of the LOC_LOCAL symbol is | |
1441 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1442 | are not combined in symbol-reading. */ | |
1443 | ||
1444 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1445 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1446 | print_variable_value (sym2, fi, stream); |
1447 | fprintf_filtered (stream, "\n"); | |
1448 | break; | |
1449 | ||
1450 | default: | |
1451 | /* Don't worry about things which aren't arguments. */ | |
1452 | break; | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | if (!values_printed) | |
1457 | { | |
1458 | fprintf_filtered (stream, "No arguments.\n"); | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | void | |
1463 | args_info (ignore, from_tty) | |
1464 | char *ignore; | |
1465 | int from_tty; | |
1466 | { | |
1467 | if (!selected_frame) | |
1468 | error ("No frame selected."); | |
1469 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1470 | } | |
1471 | ||
1472 | ||
1473 | static void | |
1474 | args_plus_locals_info (ignore, from_tty) | |
1475 | char *ignore; | |
1476 | int from_tty; | |
1477 | { | |
c5aa993b JM |
1478 | args_info (ignore, from_tty); |
1479 | locals_info (ignore, from_tty); | |
c906108c | 1480 | } |
c906108c | 1481 | \f |
c5aa993b | 1482 | |
c906108c SS |
1483 | /* Select frame FI, and note that its stack level is LEVEL. |
1484 | LEVEL may be -1 if an actual level number is not known. */ | |
1485 | ||
1486 | void | |
1487 | select_frame (fi, level) | |
1488 | struct frame_info *fi; | |
1489 | int level; | |
1490 | { | |
1491 | register struct symtab *s; | |
1492 | ||
1493 | selected_frame = fi; | |
1494 | selected_frame_level = level; | |
1495 | if (selected_frame_level_changed_hook) | |
1496 | selected_frame_level_changed_hook (level); | |
1497 | ||
1498 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1499 | source language of this frame, and switch to it if desired. */ | |
1500 | if (fi) | |
c5aa993b JM |
1501 | { |
1502 | s = find_pc_symtab (fi->pc); | |
1503 | if (s | |
1504 | && s->language != current_language->la_language | |
1505 | && s->language != language_unknown | |
1506 | && language_mode == language_mode_auto) | |
1507 | { | |
1508 | set_language (s->language); | |
1509 | } | |
1510 | /* elz: this if here fixes the problem with the pc not being displayed | |
1511 | in the tui asm layout, with no debug symbols. The value of s | |
1512 | would be 0 here, and select_source_symtab would abort the | |
1513 | command by calling the 'error' function */ | |
1514 | if (s) | |
1515 | { | |
1516 | TUIDO (((TuiOpaqueFuncPtr) tui_vSelectSourceSymtab, s)); | |
1517 | } | |
c906108c | 1518 | } |
c906108c | 1519 | } |
c906108c | 1520 | \f |
c5aa993b | 1521 | |
c906108c SS |
1522 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1523 | the stack frame and show the source if this is the tui version. */ | |
1524 | void | |
c5aa993b | 1525 | select_and_print_frame (fi, level) |
c906108c SS |
1526 | struct frame_info *fi; |
1527 | int level; | |
1528 | { | |
c5aa993b | 1529 | select_frame (fi, level); |
c906108c SS |
1530 | if (fi) |
1531 | { | |
c5aa993b JM |
1532 | print_stack_frame (fi, level, 1); |
1533 | TUIDO (((TuiOpaqueFuncPtr) tui_vCheckDataValues, fi)); | |
c906108c SS |
1534 | } |
1535 | } | |
c906108c | 1536 | \f |
c5aa993b | 1537 | |
c906108c SS |
1538 | /* Select frame FI, noting that its stack level is LEVEL. Be silent if |
1539 | not the TUI */ | |
7a292a7a | 1540 | #if 0 |
c906108c SS |
1541 | void |
1542 | select_and_maybe_print_frame (fi, level) | |
1543 | struct frame_info *fi; | |
1544 | int level; | |
1545 | { | |
1546 | if (!tui_version) | |
c5aa993b | 1547 | select_frame (fi, level); |
c906108c | 1548 | else |
c5aa993b | 1549 | select_and_print_frame (fi, level); |
c906108c | 1550 | } |
7a292a7a | 1551 | #endif |
c906108c SS |
1552 | |
1553 | ||
1554 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. | |
1555 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1556 | ||
1557 | void | |
1558 | record_selected_frame (frameaddrp, levelp) | |
1559 | CORE_ADDR *frameaddrp; | |
1560 | int *levelp; | |
1561 | { | |
1562 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1563 | *levelp = selected_frame_level; | |
1564 | } | |
1565 | ||
1566 | /* Return the symbol-block in which the selected frame is executing. | |
1567 | Can return zero under various legitimate circumstances. */ | |
1568 | ||
1569 | struct block * | |
1570 | get_selected_block () | |
1571 | { | |
1572 | if (!target_has_stack) | |
1573 | return 0; | |
1574 | ||
1575 | if (!selected_frame) | |
1576 | return get_current_block (); | |
1577 | return get_frame_block (selected_frame); | |
1578 | } | |
1579 | ||
1580 | /* Find a frame a certain number of levels away from FRAME. | |
1581 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1582 | Positive means go to earlier frames (up); negative, the reverse. | |
1583 | The int that contains the number of levels is counted toward | |
1584 | zero as the frames for those levels are found. | |
1585 | If the top or bottom frame is reached, that frame is returned, | |
1586 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1587 | how much farther the original request asked to go. */ | |
1588 | ||
1589 | struct frame_info * | |
1590 | find_relative_frame (frame, level_offset_ptr) | |
1591 | register struct frame_info *frame; | |
1592 | register int *level_offset_ptr; | |
1593 | { | |
1594 | register struct frame_info *prev; | |
1595 | register struct frame_info *frame1; | |
1596 | ||
1597 | /* Going up is simple: just do get_prev_frame enough times | |
1598 | or until initial frame is reached. */ | |
1599 | while (*level_offset_ptr > 0) | |
1600 | { | |
1601 | prev = get_prev_frame (frame); | |
1602 | if (prev == 0) | |
1603 | break; | |
1604 | (*level_offset_ptr)--; | |
1605 | frame = prev; | |
1606 | } | |
1607 | /* Going down is just as simple. */ | |
1608 | if (*level_offset_ptr < 0) | |
1609 | { | |
c5aa993b JM |
1610 | while (*level_offset_ptr < 0) |
1611 | { | |
1612 | frame1 = get_next_frame (frame); | |
1613 | if (!frame1) | |
1614 | break; | |
1615 | frame = frame1; | |
1616 | (*level_offset_ptr)++; | |
1617 | } | |
c906108c SS |
1618 | } |
1619 | return frame; | |
1620 | } | |
1621 | ||
1622 | /* The "select_frame" command. With no arg, NOP. | |
1623 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1624 | valid level. Otherwise, treat level_exp as an address expression | |
1625 | and select it. See parse_frame_specification for more info on proper | |
1626 | frame expressions. */ | |
1627 | ||
1628 | /* ARGSUSED */ | |
1629 | static void | |
1630 | select_frame_command (level_exp, from_tty) | |
1631 | char *level_exp; | |
1632 | int from_tty; | |
1633 | { | |
1634 | register struct frame_info *frame, *frame1; | |
1635 | unsigned int level = 0; | |
1636 | ||
1637 | if (!target_has_stack) | |
1638 | error ("No stack."); | |
1639 | ||
1640 | frame = parse_frame_specification (level_exp); | |
1641 | ||
1642 | /* Try to figure out what level this frame is. But if there is | |
1643 | no current stack, don't error out -- let the user set one. */ | |
1644 | frame1 = 0; | |
c5aa993b JM |
1645 | if (get_current_frame ()) |
1646 | { | |
1647 | for (frame1 = get_prev_frame (0); | |
1648 | frame1 && frame1 != frame; | |
1649 | frame1 = get_prev_frame (frame1)) | |
1650 | level++; | |
1651 | } | |
c906108c SS |
1652 | |
1653 | if (!frame1) | |
1654 | level = 0; | |
1655 | ||
1656 | select_frame (frame, level); | |
1657 | } | |
1658 | ||
1659 | /* The "frame" command. With no arg, print selected frame briefly. | |
1660 | With arg, behaves like select_frame and then prints the selected | |
1661 | frame. */ | |
1662 | ||
1663 | void | |
1664 | frame_command (level_exp, from_tty) | |
1665 | char *level_exp; | |
1666 | int from_tty; | |
1667 | { | |
1668 | select_frame_command (level_exp, from_tty); | |
1669 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1670 | } | |
1671 | ||
1672 | /* The XDB Compatibility command to print the current frame. */ | |
1673 | ||
7a292a7a | 1674 | static void |
c906108c SS |
1675 | current_frame_command (level_exp, from_tty) |
1676 | char *level_exp; | |
1677 | int from_tty; | |
1678 | { | |
1679 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1680 | error ("No stack."); |
7a292a7a SS |
1681 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1682 | } | |
c906108c SS |
1683 | |
1684 | /* Select the frame up one or COUNT stack levels | |
1685 | from the previously selected frame, and print it briefly. */ | |
1686 | ||
1687 | /* ARGSUSED */ | |
1688 | static void | |
1689 | up_silently_base (count_exp) | |
1690 | char *count_exp; | |
1691 | { | |
1692 | register struct frame_info *fi; | |
1693 | int count = 1, count1; | |
1694 | if (count_exp) | |
1695 | count = parse_and_eval_address (count_exp); | |
1696 | count1 = count; | |
c5aa993b | 1697 | |
c906108c SS |
1698 | if (target_has_stack == 0 || selected_frame == 0) |
1699 | error ("No stack."); | |
1700 | ||
1701 | fi = find_relative_frame (selected_frame, &count1); | |
1702 | if (count1 != 0 && count_exp == 0) | |
1703 | error ("Initial frame selected; you cannot go up."); | |
1704 | select_frame (fi, selected_frame_level + count - count1); | |
1705 | } | |
1706 | ||
1707 | static void | |
1708 | up_silently_command (count_exp, from_tty) | |
1709 | char *count_exp; | |
1710 | int from_tty; | |
1711 | { | |
c5aa993b | 1712 | up_silently_base (count_exp); |
c906108c SS |
1713 | if (tui_version) |
1714 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1715 | } | |
1716 | ||
1717 | static void | |
1718 | up_command (count_exp, from_tty) | |
1719 | char *count_exp; | |
1720 | int from_tty; | |
1721 | { | |
1722 | up_silently_base (count_exp); | |
1723 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1724 | } | |
1725 | ||
1726 | /* Select the frame down one or COUNT stack levels | |
1727 | from the previously selected frame, and print it briefly. */ | |
1728 | ||
1729 | /* ARGSUSED */ | |
1730 | static void | |
1731 | down_silently_base (count_exp) | |
1732 | char *count_exp; | |
1733 | { | |
1734 | register struct frame_info *frame; | |
1735 | int count = -1, count1; | |
1736 | if (count_exp) | |
c5aa993b | 1737 | count = -parse_and_eval_address (count_exp); |
c906108c | 1738 | count1 = count; |
c5aa993b | 1739 | |
c906108c SS |
1740 | if (target_has_stack == 0 || selected_frame == 0) |
1741 | error ("No stack."); | |
1742 | ||
1743 | frame = find_relative_frame (selected_frame, &count1); | |
1744 | if (count1 != 0 && count_exp == 0) | |
1745 | { | |
1746 | ||
1747 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1748 | means to really go down (and let me know if that is |
1749 | impossible), but "down 9999" can be used to mean go all the way | |
1750 | down without getting an error. */ | |
c906108c SS |
1751 | |
1752 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1753 | } | |
1754 | ||
1755 | select_frame (frame, selected_frame_level + count - count1); | |
1756 | } | |
1757 | ||
1758 | /* ARGSUSED */ | |
1759 | static void | |
1760 | down_silently_command (count_exp, from_tty) | |
1761 | char *count_exp; | |
1762 | int from_tty; | |
1763 | { | |
1764 | down_silently_base (count_exp); | |
1765 | if (tui_version) | |
1766 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1767 | } | |
1768 | ||
1769 | static void | |
1770 | down_command (count_exp, from_tty) | |
1771 | char *count_exp; | |
1772 | int from_tty; | |
1773 | { | |
1774 | down_silently_base (count_exp); | |
1775 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1776 | } | |
1777 | \f | |
1778 | static void | |
1779 | return_command (retval_exp, from_tty) | |
1780 | char *retval_exp; | |
1781 | int from_tty; | |
1782 | { | |
1783 | struct symbol *thisfun; | |
1784 | CORE_ADDR selected_frame_addr; | |
1785 | CORE_ADDR selected_frame_pc; | |
1786 | struct frame_info *frame; | |
1787 | value_ptr return_value = NULL; | |
1788 | ||
1789 | if (selected_frame == NULL) | |
1790 | error ("No selected frame."); | |
1791 | thisfun = get_frame_function (selected_frame); | |
1792 | selected_frame_addr = FRAME_FP (selected_frame); | |
1793 | selected_frame_pc = selected_frame->pc; | |
1794 | ||
1795 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1796 | ||
1797 | if (retval_exp) | |
1798 | { | |
1799 | struct type *return_type = NULL; | |
1800 | ||
1801 | return_value = parse_and_eval (retval_exp); | |
1802 | ||
1803 | /* Cast return value to the return type of the function. */ | |
1804 | if (thisfun != NULL) | |
1805 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1806 | if (return_type == NULL) | |
1807 | return_type = builtin_type_int; | |
1808 | return_value = value_cast (return_type, return_value); | |
1809 | ||
1810 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1811 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1812 | if (VALUE_LAZY (return_value)) |
1813 | value_fetch_lazy (return_value); | |
1814 | } | |
1815 | ||
1816 | /* If interactive, require confirmation. */ | |
1817 | ||
1818 | if (from_tty) | |
1819 | { | |
1820 | if (thisfun != 0) | |
1821 | { | |
1822 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1823 | { | |
1824 | error ("Not confirmed."); | |
1825 | /* NOTREACHED */ | |
1826 | } | |
1827 | } | |
c5aa993b JM |
1828 | else if (!query ("Make selected stack frame return now? ")) |
1829 | error ("Not confirmed."); | |
c906108c SS |
1830 | } |
1831 | ||
1832 | /* Do the real work. Pop until the specified frame is current. We | |
1833 | use this method because the selected_frame is not valid after | |
1834 | a POP_FRAME. The pc comparison makes this work even if the | |
1835 | selected frame shares its fp with another frame. */ | |
1836 | ||
c5aa993b | 1837 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1838 | || selected_frame_pc != frame->pc) |
1839 | POP_FRAME; | |
1840 | ||
1841 | /* Then pop that frame. */ | |
1842 | ||
1843 | POP_FRAME; | |
1844 | ||
1845 | /* Compute the return value (if any) and store in the place | |
1846 | for return values. */ | |
1847 | ||
1848 | if (retval_exp) | |
1849 | set_return_value (return_value); | |
1850 | ||
1851 | /* If interactive, print the frame that is now current. */ | |
1852 | ||
1853 | if (from_tty) | |
1854 | frame_command ("0", 1); | |
1855 | else | |
1856 | select_frame_command ("0", 0); | |
1857 | } | |
1858 | ||
1859 | /* Sets the scope to input function name, provided that the | |
1860 | function is within the current stack frame */ | |
1861 | ||
1862 | struct function_bounds | |
1863 | { | |
1864 | CORE_ADDR low, high; | |
1865 | }; | |
1866 | ||
7a292a7a | 1867 | static void func_command PARAMS ((char *arg, int from_tty)); |
c906108c SS |
1868 | static void |
1869 | func_command (arg, from_tty) | |
1870 | char *arg; | |
1871 | int from_tty; | |
1872 | { | |
1873 | struct frame_info *fp; | |
1874 | int found = 0; | |
1875 | struct symtabs_and_lines sals; | |
1876 | int i; | |
1877 | int level = 1; | |
1878 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1879 | ||
1880 | if (arg != (char *) NULL) | |
1881 | return; | |
1882 | ||
1883 | fp = parse_frame_specification ("0"); | |
1884 | sals = decode_line_spec (arg, 1); | |
1885 | func_bounds = (struct function_bounds *) xmalloc ( | |
1886 | sizeof (struct function_bounds) * sals.nelts); | |
1887 | for (i = 0; (i < sals.nelts && !found); i++) | |
1888 | { | |
1889 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1890 | find_pc_partial_function (sals.sals[i].pc, | |
1891 | (char **) NULL, | |
1892 | &func_bounds[i].low, | |
1893 | &func_bounds[i].high) == 0) | |
1894 | { | |
1895 | func_bounds[i].low = | |
1896 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | do | |
1901 | { | |
1902 | for (i = 0; (i < sals.nelts && !found); i++) | |
1903 | found = (fp->pc >= func_bounds[i].low && | |
1904 | fp->pc < func_bounds[i].high); | |
1905 | if (!found) | |
1906 | { | |
1907 | level = 1; | |
1908 | fp = find_relative_frame (fp, &level); | |
1909 | } | |
1910 | } | |
1911 | while (!found && level == 0); | |
1912 | ||
1913 | if (func_bounds) | |
1914 | free (func_bounds); | |
1915 | ||
1916 | if (!found) | |
1917 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1918 | else if (fp != selected_frame) | |
1919 | select_and_print_frame (fp, level); | |
1920 | } | |
1921 | ||
1922 | /* Gets the language of the current frame. */ | |
1923 | ||
1924 | enum language | |
1925 | get_frame_language () | |
1926 | { | |
1927 | register struct symtab *s; | |
1928 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1929 | |
c906108c SS |
1930 | if (selected_frame) |
1931 | { | |
c5aa993b | 1932 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1933 | if (s) |
1934 | flang = s->language; | |
1935 | else | |
1936 | flang = language_unknown; | |
1937 | } | |
1938 | else | |
1939 | flang = language_unknown; | |
1940 | ||
1941 | return flang; | |
1942 | } | |
1943 | \f | |
1944 | void | |
1945 | _initialize_stack () | |
1946 | { | |
c5aa993b | 1947 | #if 0 |
c906108c SS |
1948 | backtrace_limit = 30; |
1949 | #endif | |
1950 | ||
1951 | add_com ("return", class_stack, return_command, | |
1952 | "Make selected stack frame return to its caller.\n\ | |
1953 | Control remains in the debugger, but when you continue\n\ | |
1954 | execution will resume in the frame above the one now selected.\n\ | |
1955 | If an argument is given, it is an expression for the value to return."); | |
1956 | ||
1957 | add_com ("up", class_stack, up_command, | |
1958 | "Select and print stack frame that called this one.\n\ | |
1959 | An argument says how many frames up to go."); | |
1960 | add_com ("up-silently", class_support, up_silently_command, | |
1961 | "Same as the `up' command, but does not print anything.\n\ | |
1962 | This is useful in command scripts."); | |
1963 | ||
1964 | add_com ("down", class_stack, down_command, | |
1965 | "Select and print stack frame called by this one.\n\ | |
1966 | An argument says how many frames down to go."); | |
1967 | add_com_alias ("do", "down", class_stack, 1); | |
1968 | add_com_alias ("dow", "down", class_stack, 1); | |
1969 | add_com ("down-silently", class_support, down_silently_command, | |
1970 | "Same as the `down' command, but does not print anything.\n\ | |
1971 | This is useful in command scripts."); | |
1972 | ||
1973 | add_com ("frame", class_stack, frame_command, | |
1974 | "Select and print a stack frame.\n\ | |
1975 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1976 | An argument specifies the frame to select.\n\ | |
1977 | It can be a stack frame number or the address of the frame.\n\ | |
1978 | With argument, nothing is printed if input is coming from\n\ | |
1979 | a command file or a user-defined command."); | |
1980 | ||
1981 | add_com_alias ("f", "frame", class_stack, 1); | |
1982 | ||
1983 | if (xdb_commands) | |
1984 | { | |
c5aa993b JM |
1985 | add_com ("L", class_stack, current_frame_command, |
1986 | "Print the current stack frame.\n"); | |
c906108c SS |
1987 | add_com_alias ("V", "frame", class_stack, 1); |
1988 | } | |
1989 | add_com ("select-frame", class_stack, select_frame_command, | |
1990 | "Select a stack frame without printing anything.\n\ | |
1991 | An argument specifies the frame to select.\n\ | |
1992 | It can be a stack frame number or the address of the frame.\n"); | |
1993 | ||
1994 | add_com ("backtrace", class_stack, backtrace_command, | |
1995 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1996 | With a negative argument, print outermost -COUNT frames.\n\ | |
1997 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1998 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1999 | if (xdb_commands) | |
2000 | { | |
2001 | add_com_alias ("t", "backtrace", class_stack, 0); | |
2002 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 2003 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
2004 | and the values of the local variables.\n\ |
2005 | With a negative argument, print outermost -COUNT frames.\n\ | |
2006 | Usage: T <count>\n"); | |
2007 | } | |
2008 | ||
2009 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2010 | add_info ("stack", backtrace_command, | |
2011 | "Backtrace of the stack, or innermost COUNT frames."); | |
2012 | add_info_alias ("s", "stack", 1); | |
2013 | add_info ("frame", frame_info, | |
2014 | "All about selected stack frame, or frame at ADDR."); | |
2015 | add_info_alias ("f", "frame", 1); | |
2016 | add_info ("locals", locals_info, | |
2017 | "Local variables of current stack frame."); | |
2018 | add_info ("args", args_info, | |
2019 | "Argument variables of current stack frame."); | |
2020 | if (xdb_commands) | |
c5aa993b JM |
2021 | add_com ("l", class_info, args_plus_locals_info, |
2022 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2023 | |
2024 | if (dbx_commands) | |
c5aa993b JM |
2025 | add_com ("func", class_stack, func_command, |
2026 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2027 | |
2028 | add_info ("catch", catch_info, | |
2029 | "Exceptions that can be caught in the current stack frame."); | |
2030 | ||
2031 | #if 0 | |
c5aa993b JM |
2032 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2033 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2034 | &setlist); |
2035 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2036 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2037 | #endif |
2038 | } |