Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
bd5d07d9 | 2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
cadbb07a | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
cadbb07a JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
cadbb07a | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
cadbb07a JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
bd5635a1 | 20 | #include "defs.h" |
b4fde6fa | 21 | #include "value.h" |
bd5635a1 | 22 | #include "symtab.h" |
b4fde6fa FF |
23 | #include "gdbtypes.h" |
24 | #include "expression.h" | |
25 | #include "language.h" | |
bd5635a1 RP |
26 | #include "frame.h" |
27 | #include "gdbcmd.h" | |
bd5635a1 RP |
28 | #include "gdbcore.h" |
29 | #include "target.h" | |
30 | #include "breakpoint.h" | |
b4fde6fa | 31 | #include "demangle.h" |
df2a1bd7 | 32 | #include "inferior.h" |
b4fde6fa FF |
33 | |
34 | static void | |
35 | return_command PARAMS ((char *, int)); | |
36 | ||
37 | static void | |
38 | down_command PARAMS ((char *, int)); | |
39 | ||
40 | static void | |
41 | down_silently_command PARAMS ((char *, int)); | |
42 | ||
43 | static void | |
44 | up_command PARAMS ((char *, int)); | |
45 | ||
46 | static void | |
47 | up_silently_command PARAMS ((char *, int)); | |
48 | ||
49 | static void | |
50 | frame_command PARAMS ((char *, int)); | |
51 | ||
52 | static void | |
53 | select_frame_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | args_info PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | print_frame_arg_vars PARAMS ((FRAME, FILE *)); | |
60 | ||
61 | static void | |
62 | catch_info PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | locals_info PARAMS ((char *, int)); | |
66 | ||
67 | static void | |
68 | print_frame_label_vars PARAMS ((FRAME, int, FILE *)); | |
69 | ||
70 | static void | |
71 | print_frame_local_vars PARAMS ((FRAME, FILE *)); | |
72 | ||
73 | static int | |
74 | print_block_frame_labels PARAMS ((struct block *, int *, FILE *)); | |
75 | ||
76 | static int | |
77 | print_block_frame_locals PARAMS ((struct block *, FRAME, FILE *)); | |
78 | ||
79 | static void | |
80 | backtrace_command PARAMS ((char *, int)); | |
81 | ||
82 | static FRAME | |
83 | parse_frame_specification PARAMS ((char *)); | |
84 | ||
85 | static void | |
86 | frame_info PARAMS ((char *, int)); | |
87 | ||
bd5635a1 RP |
88 | |
89 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
90 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
d8ce1326 | 91 | extern int lines_to_list; /* # of lines "list" command shows by default */ |
bd5635a1 | 92 | |
b4fde6fa | 93 | /* The "selected" stack frame is used by default for local and arg access. |
bd5635a1 RP |
94 | May be zero, for no selected frame. */ |
95 | ||
96 | FRAME selected_frame; | |
97 | ||
98 | /* Level of the selected frame: | |
99 | 0 for innermost, 1 for its caller, ... | |
100 | or -1 for frame specified by address with no defined level. */ | |
101 | ||
102 | int selected_frame_level; | |
103 | ||
104 | /* Nonzero means print the full filename and linenumber | |
105 | when a frame is printed, and do so in a format programs can parse. */ | |
106 | ||
107 | int frame_file_full_name = 0; | |
108 | ||
bd5635a1 RP |
109 | \f |
110 | /* Print a stack frame briefly. FRAME should be the frame id | |
111 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
112 | This prints the level, the function executing, the arguments, | |
113 | and the file name and line number. | |
114 | If the pc is not at the beginning of the source line, | |
115 | the actual pc is printed at the beginning. | |
116 | ||
117 | If SOURCE is 1, print the source line as well. | |
118 | If SOURCE is -1, print ONLY the source line. */ | |
119 | ||
cadbb07a | 120 | void |
bd5635a1 RP |
121 | print_stack_frame (frame, level, source) |
122 | FRAME frame; | |
123 | int level; | |
124 | int source; | |
125 | { | |
126 | struct frame_info *fi; | |
127 | ||
128 | fi = get_frame_info (frame); | |
129 | ||
130 | print_frame_info (fi, level, source, 1); | |
131 | } | |
132 | ||
c94e7e75 JK |
133 | struct print_args_args { |
134 | struct symbol *func; | |
135 | struct frame_info *fi; | |
136 | }; | |
137 | ||
138 | static int print_args_stub PARAMS ((char *)); | |
139 | ||
140 | /* Pass the args the way catch_errors wants them. */ | |
141 | static int | |
142 | print_args_stub (args) | |
143 | char *args; | |
144 | { | |
145 | int numargs; | |
146 | struct print_args_args *p = (struct print_args_args *)args; | |
147 | FRAME_NUM_ARGS (numargs, (p->fi)); | |
148 | print_frame_args (p->func, p->fi, numargs, stdout); | |
149 | return 0; | |
150 | } | |
151 | ||
bd5635a1 RP |
152 | void |
153 | print_frame_info (fi, level, source, args) | |
154 | struct frame_info *fi; | |
155 | register int level; | |
156 | int source; | |
157 | int args; | |
158 | { | |
159 | struct symtab_and_line sal; | |
160 | struct symbol *func; | |
161 | register char *funname = 0; | |
bd5d07d9 | 162 | enum language funlang = language_unknown; |
bd5635a1 | 163 | int numargs; |
dff84871 PS |
164 | char buf[MAX_REGISTER_RAW_SIZE]; |
165 | CORE_ADDR sp; | |
166 | ||
167 | /* Get the value of SP_REGNUM relative to the frame. */ | |
168 | get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL, | |
169 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *)NULL); | |
170 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); | |
171 | ||
172 | /* This is not a perfect test, because if a function alloca's some | |
173 | memory, puts some code there, and then jumps into it, then the test | |
174 | will succeed even though there is no call dummy. A better | |
175 | solution would be to keep track of where the call dummies are. | |
176 | Probably the best way to do that is by setting a breakpoint.c | |
177 | breakpoint at the end of the call dummy (wanted anyway, to clean | |
178 | up wait_for_inferior). Then we know that the sizeof (CALL_DUMMY) | |
179 | (or some such) bytes before that breakpoint are a call dummy. | |
180 | Only problem I see with this approach is figuring out to get rid | |
181 | of the breakpoint whenever the call dummy vanishes (e.g. | |
182 | return_command, or longjmp out of the called function), which we | |
183 | probably can solve (it's very similar to figuring out when a | |
184 | watchpoint on a local variable goes out of scope if it is being | |
185 | watched via something like a 386 debug register). */ | |
186 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
df2a1bd7 JK |
187 | { |
188 | /* Do this regardless of SOURCE because we don't have any source | |
189 | to list for this frame. */ | |
190 | if (level >= 0) | |
191 | printf_filtered ("#%-2d ", level); | |
192 | printf_filtered ("<function called from gdb>\n"); | |
193 | return; | |
194 | } | |
cee86be3 JK |
195 | if (fi->signal_handler_caller) |
196 | { | |
197 | /* Do this regardless of SOURCE because we don't have any source | |
198 | to list for this frame. */ | |
199 | if (level >= 0) | |
200 | printf_filtered ("#%-2d ", level); | |
201 | printf_filtered ("<signal handler called>\n"); | |
202 | return; | |
203 | } | |
b4fde6fa | 204 | |
dff84871 PS |
205 | sal = find_pc_line (fi->pc, |
206 | fi->next != NULL && fi->next->signal_handler_caller == 0); | |
bd5635a1 RP |
207 | func = find_pc_function (fi->pc); |
208 | if (func) | |
209 | { | |
210 | /* In certain pathological cases, the symtabs give the wrong | |
211 | function (when we are in the first function in a file which | |
212 | is compiled without debugging symbols, the previous function | |
213 | is compiled with debugging symbols, and the "foo.o" symbol | |
214 | that is supposed to tell us where the file with debugging symbols | |
215 | ends has been truncated by ar because it is longer than 15 | |
dff84871 PS |
216 | characters). This also occurs if the user uses asm() to create |
217 | a function but not stabs for it (in a file compiled -g). | |
bd5635a1 | 218 | |
b4fde6fa | 219 | So look in the minimal symbol tables as well, and if it comes |
bd5635a1 | 220 | up with a larger address for the function use that instead. |
b4fde6fa | 221 | I don't think this can ever cause any problems; there shouldn't |
dff84871 PS |
222 | be any minimal symbols in the middle of a function; if this is |
223 | ever changed many parts of GDB will need to be changed (and we'll | |
224 | create a find_pc_minimal_function or some such). */ | |
b4fde6fa FF |
225 | |
226 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
227 | if (msymbol != NULL | |
bd5d07d9 | 228 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
bd5635a1 RP |
229 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
230 | { | |
231 | /* In this case we have no way of knowing the source file | |
232 | and line number, so don't print them. */ | |
233 | sal.symtab = 0; | |
234 | /* We also don't know anything about the function besides | |
235 | its address and name. */ | |
236 | func = 0; | |
bd5d07d9 FF |
237 | funname = SYMBOL_NAME (msymbol); |
238 | funlang = SYMBOL_LANGUAGE (msymbol); | |
bd5635a1 RP |
239 | } |
240 | else | |
bd5d07d9 FF |
241 | { |
242 | funname = SYMBOL_NAME (func); | |
243 | funlang = SYMBOL_LANGUAGE (func); | |
244 | } | |
bd5635a1 RP |
245 | } |
246 | else | |
247 | { | |
b4fde6fa FF |
248 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); |
249 | if (msymbol != NULL) | |
bd5d07d9 FF |
250 | { |
251 | funname = SYMBOL_NAME (msymbol); | |
252 | funlang = SYMBOL_LANGUAGE (msymbol); | |
253 | } | |
bd5635a1 RP |
254 | } |
255 | ||
256 | if (source >= 0 || !sal.symtab) | |
257 | { | |
258 | if (level >= 0) | |
259 | printf_filtered ("#%-2d ", level); | |
260 | if (addressprint) | |
261 | if (fi->pc != sal.pc || !sal.symtab) | |
89e0bbcd | 262 | printf_filtered ("%s in ", local_hex_string(fi->pc)); |
5e81259d FF |
263 | fprintf_symbol_filtered (stdout, funname ? funname : "??", funlang, |
264 | DMGL_NO_OPTS); | |
bd5635a1 RP |
265 | wrap_here (" "); |
266 | fputs_filtered (" (", stdout); | |
267 | if (args) | |
268 | { | |
c94e7e75 JK |
269 | struct print_args_args args; |
270 | args.fi = fi; | |
271 | args.func = func; | |
23a8e291 | 272 | catch_errors (print_args_stub, (char *)&args, "", RETURN_MASK_ERROR); |
bd5635a1 RP |
273 | } |
274 | printf_filtered (")"); | |
275 | if (sal.symtab && sal.symtab->filename) | |
276 | { | |
277 | wrap_here (" "); | |
278 | printf_filtered (" at %s:%d", sal.symtab->filename, sal.line); | |
279 | } | |
b4fde6fa FF |
280 | |
281 | #ifdef PC_LOAD_SEGMENT | |
282 | /* If we couldn't print out function name but if can figure out what | |
283 | load segment this pc value is from, at least print out some info | |
284 | about its load segment. */ | |
285 | if (!funname) { | |
286 | wrap_here (" "); | |
287 | printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc)); | |
288 | } | |
289 | #endif | |
bd5635a1 RP |
290 | printf_filtered ("\n"); |
291 | } | |
292 | ||
293 | if ((source != 0) && sal.symtab) | |
294 | { | |
295 | int done = 0; | |
296 | int mid_statement = source < 0 && fi->pc != sal.pc; | |
297 | if (frame_file_full_name) | |
c94e7e75 JK |
298 | done = identify_source_line (sal.symtab, sal.line, mid_statement, |
299 | fi->pc); | |
bd5635a1 RP |
300 | if (!done) |
301 | { | |
302 | if (addressprint && mid_statement) | |
89e0bbcd | 303 | printf_filtered ("%s\t", local_hex_string(fi->pc)); |
bd5635a1 RP |
304 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); |
305 | } | |
cadbb07a | 306 | current_source_line = max (sal.line - lines_to_list/2, 1); |
bd5635a1 RP |
307 | } |
308 | if (source != 0) | |
309 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
310 | ||
311 | fflush (stdout); | |
312 | } | |
313 | ||
bd5635a1 RP |
314 | /* |
315 | * Read a frame specification in whatever the appropriate format is. | |
777bef06 JK |
316 | * Call error() if the specification is in any way invalid (i.e. |
317 | * this function never returns NULL). | |
bd5635a1 RP |
318 | */ |
319 | static FRAME | |
320 | parse_frame_specification (frame_exp) | |
321 | char *frame_exp; | |
322 | { | |
323 | int numargs = 0; | |
bd5d07d9 FF |
324 | int arg1, arg2, arg3; |
325 | #define MAXARGS 4 | |
326 | int args[MAXARGS]; | |
bd5635a1 RP |
327 | |
328 | if (frame_exp) | |
329 | { | |
330 | char *addr_string, *p; | |
331 | struct cleanup *tmp_cleanup; | |
332 | ||
333 | while (*frame_exp == ' ') frame_exp++; | |
bd5635a1 | 334 | |
bd5d07d9 | 335 | while (*frame_exp) |
bd5635a1 | 336 | { |
bd5d07d9 FF |
337 | if (numargs > MAXARGS) |
338 | error ("Too many args in frame specification"); | |
339 | /* Parse an argument. */ | |
340 | for (p = frame_exp; *p && *p != ' '; p++) | |
341 | ; | |
bd5635a1 RP |
342 | addr_string = savestring(frame_exp, p - frame_exp); |
343 | ||
344 | { | |
345 | tmp_cleanup = make_cleanup (free, addr_string); | |
bd5d07d9 | 346 | args[numargs++] = parse_and_eval_address (addr_string); |
bd5635a1 RP |
347 | do_cleanups (tmp_cleanup); |
348 | } | |
349 | ||
bd5d07d9 | 350 | /* Skip spaces, move to possible next arg. */ |
bd5635a1 | 351 | while (*p == ' ') p++; |
bd5d07d9 | 352 | frame_exp = p; |
bd5635a1 RP |
353 | } |
354 | } | |
355 | ||
356 | switch (numargs) | |
357 | { | |
358 | case 0: | |
777bef06 JK |
359 | if (selected_frame == NULL) |
360 | error ("No selected frame."); | |
bd5635a1 RP |
361 | return selected_frame; |
362 | /* NOTREACHED */ | |
363 | case 1: | |
364 | { | |
bd5d07d9 | 365 | int level = args[0]; |
bd5635a1 RP |
366 | FRAME fid = find_relative_frame (get_current_frame (), &level); |
367 | FRAME tfid; | |
368 | ||
369 | if (level == 0) | |
370 | /* find_relative_frame was successful */ | |
371 | return fid; | |
372 | ||
373 | /* If (s)he specifies the frame with an address, he deserves what | |
374 | (s)he gets. Still, give the highest one that matches. */ | |
375 | ||
376 | for (fid = get_current_frame (); | |
bd5d07d9 | 377 | fid && FRAME_FP (fid) != args[0]; |
bd5635a1 RP |
378 | fid = get_prev_frame (fid)) |
379 | ; | |
380 | ||
381 | if (fid) | |
382 | while ((tfid = get_prev_frame (fid)) && | |
bd5d07d9 | 383 | (FRAME_FP (tfid) == args[0])) |
bd5635a1 RP |
384 | fid = tfid; |
385 | ||
bd5d07d9 FF |
386 | /* We couldn't identify the frame as an existing frame, but |
387 | perhaps we can create one with a single argument. | |
388 | Fall through to default case; it's up to SETUP_ARBITRARY_FRAME | |
389 | to complain if it doesn't like a single arg. */ | |
bd5635a1 | 390 | } |
bd5d07d9 FF |
391 | |
392 | default: | |
393 | #ifdef SETUP_ARBITRARY_FRAME | |
394 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
bd5635a1 | 395 | #else |
bd5d07d9 FF |
396 | /* Usual case. Do it here rather than have everyone supply |
397 | a SETUP_ARBITRARY_FRAME that does this. */ | |
398 | if (numargs == 1) | |
399 | return create_new_frame (args[0], 0); | |
400 | error ("Too many args in frame specification"); | |
bd5635a1 RP |
401 | #endif |
402 | /* NOTREACHED */ | |
403 | } | |
bd5635a1 RP |
404 | /* NOTREACHED */ |
405 | } | |
406 | ||
407 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
408 | that if it is unsure about the answer, it returns 0 | |
409 | instead of guessing (this happens on the VAX and i960, for example). | |
410 | ||
411 | On most machines, we never have to guess about the args address, | |
412 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
413 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
414 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
415 | #endif | |
416 | ||
417 | /* Print verbosely the selected frame or the frame at address ADDR. | |
418 | This means absolutely all information in the frame is printed. */ | |
419 | ||
420 | static void | |
b4fde6fa | 421 | frame_info (addr_exp, from_tty) |
bd5635a1 | 422 | char *addr_exp; |
b4fde6fa | 423 | int from_tty; |
bd5635a1 RP |
424 | { |
425 | FRAME frame; | |
426 | struct frame_info *fi; | |
427 | struct frame_saved_regs fsr; | |
428 | struct symtab_and_line sal; | |
429 | struct symbol *func; | |
89e0bbcd | 430 | struct symtab *s; |
bd5635a1 RP |
431 | FRAME calling_frame; |
432 | int i, count; | |
433 | char *funname = 0; | |
bd5d07d9 | 434 | enum language funlang = language_unknown; |
bd5635a1 RP |
435 | |
436 | if (!target_has_stack) | |
6fe90fc8 | 437 | error ("No stack."); |
bd5635a1 RP |
438 | |
439 | frame = parse_frame_specification (addr_exp); | |
440 | if (!frame) | |
441 | error ("Invalid frame specified."); | |
442 | ||
443 | fi = get_frame_info (frame); | |
dff84871 PS |
444 | sal = find_pc_line (fi->pc, |
445 | fi->next != NULL && fi->next->signal_handler_caller == 0); | |
bd5635a1 | 446 | func = get_frame_function (frame); |
89e0bbcd | 447 | s = find_pc_symtab(fi->pc); |
bd5635a1 | 448 | if (func) |
bd5d07d9 FF |
449 | { |
450 | funname = SYMBOL_NAME (func); | |
451 | funlang = SYMBOL_LANGUAGE (func); | |
452 | } | |
bd5635a1 RP |
453 | else |
454 | { | |
b4fde6fa FF |
455 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); |
456 | if (msymbol != NULL) | |
bd5d07d9 FF |
457 | { |
458 | funname = SYMBOL_NAME (msymbol); | |
459 | funlang = SYMBOL_LANGUAGE (msymbol); | |
460 | } | |
bd5635a1 RP |
461 | } |
462 | calling_frame = get_prev_frame (frame); | |
463 | ||
89e0bbcd JG |
464 | if (!addr_exp && selected_frame_level >= 0) { |
465 | printf_filtered ("Stack level %d, frame at %s:\n", | |
466 | selected_frame_level, | |
467 | local_hex_string(FRAME_FP(frame))); | |
468 | } else { | |
469 | printf_filtered ("Stack frame at %s:\n", | |
470 | local_hex_string(FRAME_FP(frame))); | |
471 | } | |
472 | printf_filtered (" %s = %s", | |
473 | reg_names[PC_REGNUM], | |
474 | local_hex_string(fi->pc)); | |
bd5635a1 RP |
475 | |
476 | wrap_here (" "); | |
477 | if (funname) | |
b0077123 JG |
478 | { |
479 | printf_filtered (" in "); | |
5e81259d FF |
480 | fprintf_symbol_filtered (stdout, funname, funlang, |
481 | DMGL_ANSI | DMGL_PARAMS); | |
b0077123 | 482 | } |
bd5635a1 RP |
483 | wrap_here (" "); |
484 | if (sal.symtab) | |
485 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
486 | puts_filtered ("; "); | |
487 | wrap_here (" "); | |
89e0bbcd JG |
488 | printf_filtered ("saved %s %s\n", reg_names[PC_REGNUM], |
489 | local_hex_string(FRAME_SAVED_PC (frame))); | |
b4fde6fa FF |
490 | |
491 | { | |
492 | int frameless = 0; | |
493 | #ifdef FRAMELESS_FUNCTION_INVOCATION | |
494 | FRAMELESS_FUNCTION_INVOCATION (fi, frameless); | |
495 | #endif | |
496 | if (frameless) | |
497 | printf_filtered (" (FRAMELESS),"); | |
498 | } | |
499 | ||
bd5635a1 | 500 | if (calling_frame) |
89e0bbcd JG |
501 | printf_filtered (" called by frame at %s", |
502 | local_hex_string(FRAME_FP (calling_frame))); | |
23a8e291 | 503 | if (fi->next && calling_frame) |
bd5635a1 RP |
504 | puts_filtered (","); |
505 | wrap_here (" "); | |
23a8e291 JK |
506 | if (fi->next) |
507 | printf_filtered (" caller of frame at %s", | |
508 | local_hex_string (fi->next->frame)); | |
509 | if (fi->next || calling_frame) | |
bd5635a1 | 510 | puts_filtered ("\n"); |
89e0bbcd JG |
511 | if (s) |
512 | printf_filtered(" source language %s.\n", language_str(s->language)); | |
bd5635a1 | 513 | |
bd5d07d9 FF |
514 | #ifdef PRINT_EXTRA_FRAME_INFO |
515 | PRINT_EXTRA_FRAME_INFO (fi); | |
516 | #endif | |
517 | ||
bd5635a1 RP |
518 | { |
519 | /* Address of the argument list for this frame, or 0. */ | |
520 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
521 | /* Number of args for this frame, or -1 if unknown. */ | |
522 | int numargs; | |
523 | ||
524 | if (arg_list == 0) | |
525 | printf_filtered (" Arglist at unknown address.\n"); | |
526 | else | |
527 | { | |
89e0bbcd | 528 | printf_filtered (" Arglist at %s,", local_hex_string(arg_list)); |
bd5635a1 RP |
529 | |
530 | FRAME_NUM_ARGS (numargs, fi); | |
531 | if (numargs < 0) | |
532 | puts_filtered (" args: "); | |
533 | else if (numargs == 0) | |
534 | puts_filtered (" no args."); | |
535 | else if (numargs == 1) | |
536 | puts_filtered (" 1 arg: "); | |
537 | else | |
538 | printf_filtered (" %d args: ", numargs); | |
539 | print_frame_args (func, fi, numargs, stdout); | |
540 | puts_filtered ("\n"); | |
541 | } | |
542 | } | |
b4fde6fa FF |
543 | { |
544 | /* Address of the local variables for this frame, or 0. */ | |
545 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
546 | ||
547 | if (arg_list == 0) | |
548 | printf_filtered (" Locals at unknown address,"); | |
549 | else | |
550 | printf_filtered (" Locals at %s,", local_hex_string(arg_list)); | |
551 | } | |
bd5635a1 RP |
552 | |
553 | #if defined (FRAME_FIND_SAVED_REGS) | |
554 | get_frame_saved_regs (fi, &fsr); | |
555 | /* The sp is special; what's returned isn't the save address, but | |
556 | actually the value of the previous frame's sp. */ | |
89e0bbcd JG |
557 | printf_filtered (" Previous frame's sp is %s\n", |
558 | local_hex_string(fsr.regs[SP_REGNUM])); | |
bd5635a1 RP |
559 | count = 0; |
560 | for (i = 0; i < NUM_REGS; i++) | |
561 | if (fsr.regs[i] && i != SP_REGNUM) | |
562 | { | |
563 | if (count == 0) | |
564 | puts_filtered (" Saved registers:\n "); | |
565 | else | |
566 | puts_filtered (","); | |
567 | wrap_here (" "); | |
89e0bbcd JG |
568 | printf_filtered (" %s at %s", reg_names[i], |
569 | local_hex_string(fsr.regs[i])); | |
bd5635a1 RP |
570 | count++; |
571 | } | |
572 | if (count) | |
573 | puts_filtered ("\n"); | |
574 | #endif /* Have FRAME_FIND_SAVED_REGS. */ | |
575 | } | |
576 | ||
577 | #if 0 | |
578 | /* Set a limit on the number of frames printed by default in a | |
579 | backtrace. */ | |
580 | ||
581 | static int backtrace_limit; | |
582 | ||
583 | static void | |
584 | set_backtrace_limit_command (count_exp, from_tty) | |
585 | char *count_exp; | |
586 | int from_tty; | |
587 | { | |
588 | int count = parse_and_eval_address (count_exp); | |
589 | ||
590 | if (count < 0) | |
591 | error ("Negative argument not meaningful as backtrace limit."); | |
592 | ||
593 | backtrace_limit = count; | |
594 | } | |
595 | ||
596 | static void | |
597 | backtrace_limit_info (arg, from_tty) | |
598 | char *arg; | |
599 | int from_tty; | |
600 | { | |
601 | if (arg) | |
602 | error ("\"Info backtrace-limit\" takes no arguments."); | |
603 | ||
604 | printf ("Backtrace limit: %d.\n", backtrace_limit); | |
605 | } | |
606 | #endif | |
607 | ||
608 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
609 | ||
610 | static void | |
611 | backtrace_command (count_exp, from_tty) | |
612 | char *count_exp; | |
613 | int from_tty; | |
614 | { | |
615 | struct frame_info *fi; | |
616 | register int count; | |
617 | register FRAME frame; | |
618 | register int i; | |
619 | register FRAME trailing; | |
620 | register int trailing_level; | |
621 | ||
777bef06 JK |
622 | if (!target_has_stack) |
623 | error ("No stack."); | |
624 | ||
bd5635a1 RP |
625 | /* The following code must do two things. First, it must |
626 | set the variable TRAILING to the frame from which we should start | |
627 | printing. Second, it must set the variable count to the number | |
628 | of frames which we should print, or -1 if all of them. */ | |
629 | trailing = get_current_frame (); | |
630 | trailing_level = 0; | |
631 | if (count_exp) | |
632 | { | |
633 | count = parse_and_eval_address (count_exp); | |
634 | if (count < 0) | |
635 | { | |
636 | FRAME current; | |
637 | ||
638 | count = -count; | |
639 | ||
640 | current = trailing; | |
641 | while (current && count--) | |
642 | { | |
643 | QUIT; | |
644 | current = get_prev_frame (current); | |
645 | } | |
646 | ||
647 | /* Will stop when CURRENT reaches the top of the stack. TRAILING | |
648 | will be COUNT below it. */ | |
649 | while (current) | |
650 | { | |
651 | QUIT; | |
652 | trailing = get_prev_frame (trailing); | |
653 | current = get_prev_frame (current); | |
654 | trailing_level++; | |
655 | } | |
656 | ||
657 | count = -1; | |
658 | } | |
659 | } | |
660 | else | |
661 | count = -1; | |
662 | ||
663 | if (info_verbose) | |
664 | { | |
665 | struct partial_symtab *ps; | |
666 | ||
667 | /* Read in symbols for all of the frames. Need to do this in | |
668 | a separate pass so that "Reading in symbols for xxx" messages | |
669 | don't screw up the appearance of the backtrace. Also | |
670 | if people have strong opinions against reading symbols for | |
671 | backtrace this may have to be an option. */ | |
672 | i = count; | |
673 | for (frame = trailing; | |
674 | frame != NULL && i--; | |
675 | frame = get_prev_frame (frame)) | |
676 | { | |
677 | QUIT; | |
678 | fi = get_frame_info (frame); | |
679 | ps = find_pc_psymtab (fi->pc); | |
680 | if (ps) | |
3de61d8c | 681 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ |
bd5635a1 RP |
682 | } |
683 | } | |
684 | ||
685 | for (i = 0, frame = trailing; | |
686 | frame && count--; | |
687 | i++, frame = get_prev_frame (frame)) | |
688 | { | |
689 | QUIT; | |
690 | fi = get_frame_info (frame); | |
691 | print_frame_info (fi, trailing_level + i, 0, 1); | |
692 | } | |
693 | ||
694 | /* If we've stopped before the end, mention that. */ | |
695 | if (frame && from_tty) | |
696 | printf_filtered ("(More stack frames follow...)\n"); | |
697 | } | |
698 | \f | |
699 | /* Print the local variables of a block B active in FRAME. | |
700 | Return 1 if any variables were printed; 0 otherwise. */ | |
701 | ||
702 | static int | |
703 | print_block_frame_locals (b, frame, stream) | |
704 | struct block *b; | |
705 | register FRAME frame; | |
706 | register FILE *stream; | |
707 | { | |
708 | int nsyms; | |
709 | register int i; | |
710 | register struct symbol *sym; | |
711 | register int values_printed = 0; | |
712 | ||
713 | nsyms = BLOCK_NSYMS (b); | |
714 | ||
715 | for (i = 0; i < nsyms; i++) | |
716 | { | |
717 | sym = BLOCK_SYM (b, i); | |
718 | if (SYMBOL_CLASS (sym) == LOC_LOCAL | |
719 | || SYMBOL_CLASS (sym) == LOC_REGISTER | |
720 | || SYMBOL_CLASS (sym) == LOC_STATIC) | |
721 | { | |
722 | values_printed = 1; | |
bd5d07d9 | 723 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 RP |
724 | fputs_filtered (" = ", stream); |
725 | print_variable_value (sym, frame, stream); | |
726 | fprintf_filtered (stream, "\n"); | |
bd5635a1 RP |
727 | } |
728 | } | |
729 | return values_printed; | |
730 | } | |
731 | ||
cadbb07a | 732 | /* Same, but print labels. */ |
bd5635a1 RP |
733 | |
734 | static int | |
cadbb07a | 735 | print_block_frame_labels (b, have_default, stream) |
bd5635a1 | 736 | struct block *b; |
bd5635a1 RP |
737 | int *have_default; |
738 | register FILE *stream; | |
739 | { | |
740 | int nsyms; | |
741 | register int i; | |
742 | register struct symbol *sym; | |
743 | register int values_printed = 0; | |
744 | ||
745 | nsyms = BLOCK_NSYMS (b); | |
746 | ||
747 | for (i = 0; i < nsyms; i++) | |
748 | { | |
749 | sym = BLOCK_SYM (b, i); | |
bd5d07d9 | 750 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
751 | { |
752 | if (*have_default) | |
753 | continue; | |
754 | *have_default = 1; | |
755 | } | |
756 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
757 | { | |
758 | struct symtab_and_line sal; | |
759 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
760 | values_printed = 1; | |
bd5d07d9 | 761 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 | 762 | if (addressprint) |
89e0bbcd JG |
763 | fprintf_filtered (stream, " %s", |
764 | local_hex_string(SYMBOL_VALUE_ADDRESS (sym))); | |
bd5635a1 RP |
765 | fprintf_filtered (stream, " in file %s, line %d\n", |
766 | sal.symtab->filename, sal.line); | |
bd5635a1 RP |
767 | } |
768 | } | |
769 | return values_printed; | |
770 | } | |
771 | ||
772 | /* Print on STREAM all the local variables in frame FRAME, | |
773 | including all the blocks active in that frame | |
774 | at its current pc. | |
775 | ||
776 | Returns 1 if the job was done, | |
777 | or 0 if nothing was printed because we have no info | |
778 | on the function running in FRAME. */ | |
779 | ||
c4668207 | 780 | static void |
bd5635a1 RP |
781 | print_frame_local_vars (frame, stream) |
782 | register FRAME frame; | |
783 | register FILE *stream; | |
784 | { | |
785 | register struct block *block = get_frame_block (frame); | |
786 | register int values_printed = 0; | |
787 | ||
788 | if (block == 0) | |
789 | { | |
790 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 791 | return; |
bd5635a1 RP |
792 | } |
793 | ||
794 | while (block != 0) | |
795 | { | |
796 | if (print_block_frame_locals (block, frame, stream)) | |
797 | values_printed = 1; | |
798 | /* After handling the function's top-level block, stop. | |
799 | Don't continue to its superblock, the block of | |
800 | per-file symbols. */ | |
801 | if (BLOCK_FUNCTION (block)) | |
802 | break; | |
803 | block = BLOCK_SUPERBLOCK (block); | |
804 | } | |
805 | ||
806 | if (!values_printed) | |
807 | { | |
808 | fprintf_filtered (stream, "No locals.\n"); | |
bd5635a1 | 809 | } |
bd5635a1 RP |
810 | } |
811 | ||
812 | /* Same, but print labels. */ | |
813 | ||
c4668207 | 814 | static void |
bd5635a1 RP |
815 | print_frame_label_vars (frame, this_level_only, stream) |
816 | register FRAME frame; | |
817 | int this_level_only; | |
818 | register FILE *stream; | |
819 | { | |
bd5635a1 RP |
820 | register struct blockvector *bl; |
821 | register struct block *block = get_frame_block (frame); | |
822 | register int values_printed = 0; | |
823 | int index, have_default = 0; | |
824 | char *blocks_printed; | |
825 | struct frame_info *fi = get_frame_info (frame); | |
826 | CORE_ADDR pc = fi->pc; | |
827 | ||
828 | if (block == 0) | |
829 | { | |
830 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 831 | return; |
bd5635a1 RP |
832 | } |
833 | ||
834 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
835 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
3de61d8c | 836 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
837 | |
838 | while (block != 0) | |
839 | { | |
840 | CORE_ADDR end = BLOCK_END (block) - 4; | |
841 | int last_index; | |
842 | ||
843 | if (bl != blockvector_for_pc (end, &index)) | |
844 | error ("blockvector blotch"); | |
845 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
846 | error ("blockvector botch"); | |
847 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
848 | index += 1; | |
849 | ||
850 | /* Don't print out blocks that have gone by. */ | |
851 | while (index < last_index | |
852 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
853 | index++; | |
854 | ||
855 | while (index < last_index | |
856 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
857 | { | |
858 | if (blocks_printed[index] == 0) | |
859 | { | |
cadbb07a | 860 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) |
bd5635a1 RP |
861 | values_printed = 1; |
862 | blocks_printed[index] = 1; | |
863 | } | |
864 | index++; | |
865 | } | |
866 | if (have_default) | |
c4668207 | 867 | return; |
bd5635a1 | 868 | if (values_printed && this_level_only) |
c4668207 | 869 | return; |
bd5635a1 RP |
870 | |
871 | /* After handling the function's top-level block, stop. | |
872 | Don't continue to its superblock, the block of | |
873 | per-file symbols. */ | |
874 | if (BLOCK_FUNCTION (block)) | |
875 | break; | |
876 | block = BLOCK_SUPERBLOCK (block); | |
877 | } | |
878 | ||
879 | if (!values_printed && !this_level_only) | |
880 | { | |
881 | fprintf_filtered (stream, "No catches.\n"); | |
bd5635a1 | 882 | } |
bd5635a1 RP |
883 | } |
884 | ||
e1ce8aa5 | 885 | /* ARGSUSED */ |
bd5635a1 RP |
886 | static void |
887 | locals_info (args, from_tty) | |
888 | char *args; | |
889 | int from_tty; | |
890 | { | |
cadbb07a JG |
891 | if (!selected_frame) |
892 | error ("No frame selected."); | |
bd5635a1 RP |
893 | print_frame_local_vars (selected_frame, stdout); |
894 | } | |
895 | ||
896 | static void | |
b4fde6fa FF |
897 | catch_info (ignore, from_tty) |
898 | char *ignore; | |
899 | int from_tty; | |
bd5635a1 | 900 | { |
cadbb07a JG |
901 | if (!selected_frame) |
902 | error ("No frame selected."); | |
bd5635a1 RP |
903 | print_frame_label_vars (selected_frame, 0, stdout); |
904 | } | |
905 | ||
c4668207 | 906 | static void |
bd5635a1 RP |
907 | print_frame_arg_vars (frame, stream) |
908 | register FRAME frame; | |
909 | register FILE *stream; | |
910 | { | |
911 | struct symbol *func = get_frame_function (frame); | |
912 | register struct block *b; | |
913 | int nsyms; | |
914 | register int i; | |
915 | register struct symbol *sym, *sym2; | |
916 | register int values_printed = 0; | |
917 | ||
918 | if (func == 0) | |
919 | { | |
920 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 921 | return; |
bd5635a1 RP |
922 | } |
923 | ||
924 | b = SYMBOL_BLOCK_VALUE (func); | |
925 | nsyms = BLOCK_NSYMS (b); | |
926 | ||
927 | for (i = 0; i < nsyms; i++) | |
928 | { | |
929 | sym = BLOCK_SYM (b, i); | |
930 | if (SYMBOL_CLASS (sym) == LOC_ARG | |
931 | || SYMBOL_CLASS (sym) == LOC_LOCAL_ARG | |
932 | || SYMBOL_CLASS (sym) == LOC_REF_ARG | |
5afa2040 JK |
933 | || SYMBOL_CLASS (sym) == LOC_REGPARM |
934 | || SYMBOL_CLASS (sym) == LOC_REGPARM_ADDR) | |
bd5635a1 RP |
935 | { |
936 | values_printed = 1; | |
bd5d07d9 | 937 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 | 938 | fputs_filtered (" = ", stream); |
31258e4f JK |
939 | |
940 | /* We have to look up the symbol because arguments can have | |
941 | two entries (one a parameter, one a local) and the one we | |
942 | want is the local, which lookup_symbol will find for us. | |
943 | This includes gcc1 (not gcc2) on the sparc when passing a | |
944 | small structure and gcc2 when the argument type is float | |
945 | and it is passed as a double and converted to float by | |
946 | the prologue (in the latter case the type of the LOC_ARG | |
947 | symbol is double and the type of the LOC_LOCAL symbol is | |
6fe90fc8 JK |
948 | float). There are also LOC_ARG/LOC_REGISTER pairs which |
949 | are not combined in symbol-reading. */ | |
31258e4f | 950 | |
bd5635a1 RP |
951 | sym2 = lookup_symbol (SYMBOL_NAME (sym), |
952 | b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); | |
953 | print_variable_value (sym2, frame, stream); | |
954 | fprintf_filtered (stream, "\n"); | |
bd5635a1 RP |
955 | } |
956 | } | |
957 | ||
958 | if (!values_printed) | |
959 | { | |
960 | fprintf_filtered (stream, "No arguments.\n"); | |
bd5635a1 | 961 | } |
bd5635a1 RP |
962 | } |
963 | ||
964 | static void | |
b4fde6fa FF |
965 | args_info (ignore, from_tty) |
966 | char *ignore; | |
967 | int from_tty; | |
bd5635a1 | 968 | { |
cadbb07a JG |
969 | if (!selected_frame) |
970 | error ("No frame selected."); | |
bd5635a1 RP |
971 | print_frame_arg_vars (selected_frame, stdout); |
972 | } | |
973 | \f | |
974 | /* Select frame FRAME, and note that its stack level is LEVEL. | |
975 | LEVEL may be -1 if an actual level number is not known. */ | |
976 | ||
977 | void | |
978 | select_frame (frame, level) | |
979 | FRAME frame; | |
980 | int level; | |
981 | { | |
89e0bbcd JG |
982 | register struct symtab *s; |
983 | ||
bd5635a1 RP |
984 | selected_frame = frame; |
985 | selected_frame_level = level; | |
89e0bbcd JG |
986 | |
987 | /* Ensure that symbols for this frame are read in. Also, determine the | |
988 | source language of this frame, and switch to it if desired. */ | |
bd5635a1 | 989 | if (frame) |
89e0bbcd JG |
990 | { |
991 | s = find_pc_symtab (get_frame_info (frame)->pc); | |
992 | if (s | |
91ec58ee | 993 | && s->language != current_language->la_language |
89e0bbcd JG |
994 | && s->language != language_unknown |
995 | && language_mode == language_mode_auto) { | |
996 | set_language(s->language); | |
997 | } | |
998 | } | |
bd5635a1 RP |
999 | } |
1000 | ||
777bef06 JK |
1001 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1002 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
bd5635a1 RP |
1003 | |
1004 | void | |
1005 | record_selected_frame (frameaddrp, levelp) | |
1006 | FRAME_ADDR *frameaddrp; | |
1007 | int *levelp; | |
1008 | { | |
b4fde6fa | 1009 | *frameaddrp = selected_frame ? FRAME_FP (selected_frame) : 0; |
bd5635a1 RP |
1010 | *levelp = selected_frame_level; |
1011 | } | |
1012 | ||
1013 | /* Return the symbol-block in which the selected frame is executing. | |
1014 | Can return zero under various legitimate circumstances. */ | |
1015 | ||
1016 | struct block * | |
1017 | get_selected_block () | |
1018 | { | |
1019 | if (!target_has_stack) | |
1020 | return 0; | |
1021 | ||
1022 | if (!selected_frame) | |
1023 | return get_current_block (); | |
1024 | return get_frame_block (selected_frame); | |
1025 | } | |
1026 | ||
1027 | /* Find a frame a certain number of levels away from FRAME. | |
1028 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1029 | Positive means go to earlier frames (up); negative, the reverse. | |
1030 | The int that contains the number of levels is counted toward | |
1031 | zero as the frames for those levels are found. | |
1032 | If the top or bottom frame is reached, that frame is returned, | |
1033 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1034 | how much farther the original request asked to go. */ | |
1035 | ||
1036 | FRAME | |
1037 | find_relative_frame (frame, level_offset_ptr) | |
1038 | register FRAME frame; | |
1039 | register int* level_offset_ptr; | |
1040 | { | |
1041 | register FRAME prev; | |
d8ce1326 | 1042 | register FRAME frame1; |
bd5635a1 RP |
1043 | |
1044 | /* Going up is simple: just do get_prev_frame enough times | |
1045 | or until initial frame is reached. */ | |
1046 | while (*level_offset_ptr > 0) | |
1047 | { | |
1048 | prev = get_prev_frame (frame); | |
1049 | if (prev == 0) | |
1050 | break; | |
1051 | (*level_offset_ptr)--; | |
1052 | frame = prev; | |
1053 | } | |
d8ce1326 | 1054 | /* Going down is just as simple. */ |
bd5635a1 RP |
1055 | if (*level_offset_ptr < 0) |
1056 | { | |
cadbb07a JG |
1057 | while (*level_offset_ptr < 0) { |
1058 | frame1 = get_next_frame (frame); | |
1059 | if (!frame1) | |
1060 | break; | |
1061 | frame = frame1; | |
1062 | (*level_offset_ptr)++; | |
1063 | } | |
bd5635a1 RP |
1064 | } |
1065 | return frame; | |
1066 | } | |
1067 | ||
c4668207 | 1068 | /* The "select_frame" command. With no arg, NOP. |
bd5635a1 RP |
1069 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a |
1070 | valid level. Otherwise, treat level_exp as an address expression | |
b0077123 | 1071 | and select it. See parse_frame_specification for more info on proper |
bd5635a1 RP |
1072 | frame expressions. */ |
1073 | ||
c4668207 | 1074 | /* ARGSUSED */ |
bd5635a1 | 1075 | static void |
c4668207 | 1076 | select_frame_command (level_exp, from_tty) |
bd5635a1 RP |
1077 | char *level_exp; |
1078 | int from_tty; | |
1079 | { | |
1080 | register FRAME frame, frame1; | |
1081 | unsigned int level = 0; | |
1082 | ||
1083 | if (!target_has_stack) | |
1084 | error ("No stack."); | |
1085 | ||
1086 | frame = parse_frame_specification (level_exp); | |
1087 | ||
cadbb07a JG |
1088 | /* Try to figure out what level this frame is. But if there is |
1089 | no current stack, don't error out -- let the user set one. */ | |
1090 | frame1 = 0; | |
1091 | if (get_current_frame()) { | |
1092 | for (frame1 = get_prev_frame (0); | |
1093 | frame1 && frame1 != frame; | |
1094 | frame1 = get_prev_frame (frame1)) | |
1095 | level++; | |
1096 | } | |
bd5635a1 RP |
1097 | |
1098 | if (!frame1) | |
1099 | level = 0; | |
1100 | ||
1101 | select_frame (frame, level); | |
b0077123 | 1102 | } |
bd5635a1 | 1103 | |
b0077123 | 1104 | /* The "frame" command. With no arg, print selected frame briefly. |
c4668207 | 1105 | With arg, behaves like select_frame and then prints the selected |
b0077123 | 1106 | frame. */ |
bd5635a1 | 1107 | |
b0077123 JG |
1108 | static void |
1109 | frame_command (level_exp, from_tty) | |
1110 | char *level_exp; | |
1111 | int from_tty; | |
1112 | { | |
c4668207 | 1113 | select_frame_command (level_exp, from_tty); |
bd5635a1 RP |
1114 | print_stack_frame (selected_frame, selected_frame_level, 1); |
1115 | } | |
1116 | ||
1117 | /* Select the frame up one or COUNT stack levels | |
1118 | from the previously selected frame, and print it briefly. */ | |
1119 | ||
e1ce8aa5 | 1120 | /* ARGSUSED */ |
bd5635a1 RP |
1121 | static void |
1122 | up_silently_command (count_exp, from_tty) | |
1123 | char *count_exp; | |
1124 | int from_tty; | |
1125 | { | |
1126 | register FRAME frame; | |
1127 | int count = 1, count1; | |
1128 | if (count_exp) | |
1129 | count = parse_and_eval_address (count_exp); | |
1130 | count1 = count; | |
1131 | ||
0f552c5f | 1132 | if (target_has_stack == 0 || selected_frame == 0) |
bd5635a1 RP |
1133 | error ("No stack."); |
1134 | ||
1135 | frame = find_relative_frame (selected_frame, &count1); | |
1136 | if (count1 != 0 && count_exp == 0) | |
1137 | error ("Initial frame selected; you cannot go up."); | |
1138 | select_frame (frame, selected_frame_level + count - count1); | |
1139 | } | |
1140 | ||
1141 | static void | |
1142 | up_command (count_exp, from_tty) | |
1143 | char *count_exp; | |
1144 | int from_tty; | |
1145 | { | |
1146 | up_silently_command (count_exp, from_tty); | |
1147 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1148 | } | |
1149 | ||
1150 | /* Select the frame down one or COUNT stack levels | |
1151 | from the previously selected frame, and print it briefly. */ | |
1152 | ||
e1ce8aa5 | 1153 | /* ARGSUSED */ |
bd5635a1 RP |
1154 | static void |
1155 | down_silently_command (count_exp, from_tty) | |
1156 | char *count_exp; | |
1157 | int from_tty; | |
1158 | { | |
1159 | register FRAME frame; | |
1160 | int count = -1, count1; | |
1161 | if (count_exp) | |
1162 | count = - parse_and_eval_address (count_exp); | |
1163 | count1 = count; | |
1164 | ||
0f552c5f | 1165 | if (target_has_stack == 0 || selected_frame == 0) |
89e0bbcd JG |
1166 | error ("No stack."); |
1167 | ||
bd5635a1 RP |
1168 | frame = find_relative_frame (selected_frame, &count1); |
1169 | if (count1 != 0 && count_exp == 0) | |
1170 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1171 | select_frame (frame, selected_frame_level + count - count1); | |
1172 | } | |
1173 | ||
1174 | ||
1175 | static void | |
1176 | down_command (count_exp, from_tty) | |
1177 | char *count_exp; | |
1178 | int from_tty; | |
1179 | { | |
1180 | down_silently_command (count_exp, from_tty); | |
1181 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1182 | } | |
1183 | \f | |
1184 | static void | |
1185 | return_command (retval_exp, from_tty) | |
1186 | char *retval_exp; | |
1187 | int from_tty; | |
1188 | { | |
777bef06 JK |
1189 | struct symbol *thisfun; |
1190 | FRAME_ADDR selected_frame_addr; | |
1191 | CORE_ADDR selected_frame_pc; | |
bd5635a1 | 1192 | FRAME frame; |
0f552c5f | 1193 | value return_value; |
bd5635a1 | 1194 | |
777bef06 JK |
1195 | if (selected_frame == NULL) |
1196 | error ("No selected frame."); | |
1197 | thisfun = get_frame_function (selected_frame); | |
1198 | selected_frame_addr = FRAME_FP (selected_frame); | |
1199 | selected_frame_pc = (get_frame_info (selected_frame))->pc; | |
1200 | ||
0f552c5f JG |
1201 | /* Compute the return value (if any -- possibly getting errors here). |
1202 | Call VALUE_CONTENTS to make sure we have fully evaluated it, since | |
1203 | it might live in the stack frame we're about to pop. */ | |
1204 | ||
1205 | if (retval_exp) | |
1206 | { | |
1207 | return_value = parse_and_eval (retval_exp); | |
3de61d8c | 1208 | VALUE_CONTENTS (return_value); |
0f552c5f JG |
1209 | } |
1210 | ||
bd5635a1 RP |
1211 | /* If interactive, require confirmation. */ |
1212 | ||
1213 | if (from_tty) | |
1214 | { | |
1215 | if (thisfun != 0) | |
1216 | { | |
bd5d07d9 | 1217 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) |
b4fde6fa FF |
1218 | { |
1219 | error ("Not confirmed."); | |
1220 | /* NOTREACHED */ | |
1221 | } | |
bd5635a1 RP |
1222 | } |
1223 | else | |
1224 | if (!query ("Make selected stack frame return now? ")) | |
1225 | error ("Not confirmed."); | |
1226 | } | |
1227 | ||
1228 | /* Do the real work. Pop until the specified frame is current. We | |
1229 | use this method because the selected_frame is not valid after | |
1230 | a POP_FRAME. The pc comparison makes this work even if the | |
1231 | selected frame shares its fp with another frame. */ | |
1232 | ||
1233 | while ( selected_frame_addr != FRAME_FP (frame = get_current_frame()) | |
1234 | || selected_frame_pc != (get_frame_info (frame))->pc ) | |
1235 | POP_FRAME; | |
1236 | ||
1237 | /* Then pop that frame. */ | |
1238 | ||
1239 | POP_FRAME; | |
1240 | ||
1241 | /* Compute the return value (if any) and store in the place | |
1242 | for return values. */ | |
1243 | ||
1244 | if (retval_exp) | |
0f552c5f | 1245 | set_return_value (return_value); |
bd5635a1 RP |
1246 | |
1247 | /* If interactive, print the frame that is now current. */ | |
1248 | ||
1249 | if (from_tty) | |
1250 | frame_command ("0", 1); | |
1251 | } | |
89e0bbcd JG |
1252 | |
1253 | /* Gets the language of the current frame. */ | |
1254 | enum language | |
1255 | get_frame_language() | |
1256 | { | |
1257 | register struct symtab *s; | |
1258 | FRAME fr; | |
1259 | enum language flang; /* The language of the current frame */ | |
1260 | ||
1261 | fr = get_frame_info(selected_frame); | |
1262 | if(fr) | |
1263 | { | |
1264 | s = find_pc_symtab(fr->pc); | |
1265 | if(s) | |
1266 | flang = s->language; | |
1267 | else | |
1268 | flang = language_unknown; | |
1269 | } | |
1270 | else | |
1271 | flang = language_unknown; | |
1272 | ||
1273 | return flang; | |
1274 | } | |
bd5635a1 RP |
1275 | \f |
1276 | void | |
1277 | _initialize_stack () | |
1278 | { | |
1279 | #if 0 | |
1280 | backtrace_limit = 30; | |
1281 | #endif | |
1282 | ||
1283 | add_com ("return", class_stack, return_command, | |
1284 | "Make selected stack frame return to its caller.\n\ | |
1285 | Control remains in the debugger, but when you continue\n\ | |
1286 | execution will resume in the frame above the one now selected.\n\ | |
1287 | If an argument is given, it is an expression for the value to return."); | |
1288 | ||
1289 | add_com ("up", class_stack, up_command, | |
1290 | "Select and print stack frame that called this one.\n\ | |
1291 | An argument says how many frames up to go."); | |
1292 | add_com ("up-silently", class_support, up_silently_command, | |
1293 | "Same as the `up' command, but does not print anything.\n\ | |
1294 | This is useful in command scripts."); | |
1295 | ||
1296 | add_com ("down", class_stack, down_command, | |
1297 | "Select and print stack frame called by this one.\n\ | |
1298 | An argument says how many frames down to go."); | |
1299 | add_com_alias ("do", "down", class_stack, 1); | |
3de61d8c | 1300 | add_com_alias ("dow", "down", class_stack, 1); |
bd5635a1 RP |
1301 | add_com ("down-silently", class_support, down_silently_command, |
1302 | "Same as the `down' command, but does not print anything.\n\ | |
1303 | This is useful in command scripts."); | |
1304 | ||
1305 | add_com ("frame", class_stack, frame_command, | |
1306 | "Select and print a stack frame.\n\ | |
1307 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1308 | An argument specifies the frame to select.\n\ | |
1309 | It can be a stack frame number or the address of the frame.\n\ | |
1310 | With argument, nothing is printed if input is coming from\n\ | |
1311 | a command file or a user-defined command."); | |
1312 | ||
1313 | add_com_alias ("f", "frame", class_stack, 1); | |
1314 | ||
c4668207 | 1315 | add_com ("select-frame", class_stack, select_frame_command, |
b0077123 JG |
1316 | "Select a stack frame without printing anything.\n\ |
1317 | An argument specifies the frame to select.\n\ | |
1318 | It can be a stack frame number or the address of the frame.\n"); | |
1319 | ||
bd5635a1 RP |
1320 | add_com ("backtrace", class_stack, backtrace_command, |
1321 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1322 | With a negative argument, print outermost -COUNT frames."); | |
1323 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1324 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1325 | add_info ("stack", backtrace_command, | |
1326 | "Backtrace of the stack, or innermost COUNT frames."); | |
1327 | add_info_alias ("s", "stack", 1); | |
1328 | add_info ("frame", frame_info, | |
1329 | "All about selected stack frame, or frame at ADDR."); | |
1330 | add_info_alias ("f", "frame", 1); | |
1331 | add_info ("locals", locals_info, | |
1332 | "Local variables of current stack frame."); | |
1333 | add_info ("args", args_info, | |
1334 | "Argument variables of current stack frame."); | |
1335 | add_info ("catch", catch_info, | |
1336 | "Exceptions that can be caught in the current stack frame."); | |
1337 | ||
1338 | #if 0 | |
1339 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, | |
1340 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
1341 | &setlist); | |
1342 | add_info ("backtrace-limit", backtrace_limit_info, | |
1343 | "The maximum number of frames for \"backtrace\" to print by default."); | |
1344 | #endif | |
1345 | } |