Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 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" | |
8b93c638 JM |
38 | #ifdef UI_OUT |
39 | #include "ui-out.h" | |
40 | #endif | |
c906108c SS |
41 | |
42 | /* Prototypes for exported functions. */ | |
43 | ||
a14ed312 | 44 | void args_info (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | void locals_info (char *, int); |
c906108c | 47 | |
507f3c78 | 48 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 49 | |
a14ed312 | 50 | void _initialize_stack (void); |
c906108c SS |
51 | |
52 | /* Prototypes for local functions. */ | |
53 | ||
a14ed312 | 54 | static void return_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void down_command (char *, int); |
c906108c | 57 | |
a14ed312 | 58 | static void down_silently_base (char *); |
c906108c | 59 | |
a14ed312 | 60 | static void down_silently_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void up_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void up_silently_base (char *); |
c906108c | 65 | |
a14ed312 | 66 | static void up_silently_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | void frame_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void current_frame_command (char *, int); |
7a292a7a | 71 | |
a14ed312 | 72 | static void select_frame_command (char *, int); |
c906108c | 73 | |
d9fcf2fb | 74 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 75 | |
a14ed312 | 76 | static void catch_info (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void args_plus_locals_info (char *, int); |
c906108c | 79 | |
d9fcf2fb JM |
80 | static void print_frame_label_vars (struct frame_info *, int, |
81 | struct ui_file *); | |
c906108c | 82 | |
d9fcf2fb JM |
83 | static void print_frame_local_vars (struct frame_info *, int, |
84 | struct ui_file *); | |
c906108c | 85 | |
d9fcf2fb JM |
86 | static int print_block_frame_labels (struct block *, int *, |
87 | struct ui_file *); | |
c906108c | 88 | |
d9fcf2fb JM |
89 | static int print_block_frame_locals (struct block *, |
90 | struct frame_info *, | |
91 | int, | |
92 | struct ui_file *); | |
c906108c | 93 | |
c5394b80 JM |
94 | static void print_frame (struct frame_info *fi, |
95 | int level, | |
96 | int source, | |
97 | int args, | |
98 | struct symtab_and_line sal); | |
99 | ||
a14ed312 | 100 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 101 | |
a14ed312 | 102 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 103 | |
a14ed312 | 104 | static void backtrace_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | struct frame_info *parse_frame_specification (char *); |
c906108c | 107 | |
a14ed312 | 108 | static void frame_info (char *, int); |
c906108c SS |
109 | |
110 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
c906108c SS |
111 | extern int lines_to_list; /* # of lines "list" command shows by default */ |
112 | ||
113 | /* The "selected" stack frame is used by default for local and arg access. | |
114 | May be zero, for no selected frame. */ | |
115 | ||
116 | struct frame_info *selected_frame; | |
117 | ||
118 | /* Level of the selected frame: | |
119 | 0 for innermost, 1 for its caller, ... | |
120 | or -1 for frame specified by address with no defined level. */ | |
121 | ||
122 | int selected_frame_level; | |
123 | ||
124 | /* Zero means do things normally; we are interacting directly with the | |
125 | user. One means print the full filename and linenumber when a | |
126 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
127 | parse. Two means print similar annotations, but in many more | |
128 | cases and in a slightly different syntax. */ | |
129 | ||
130 | int annotation_level = 0; | |
c906108c | 131 | \f |
c5aa993b JM |
132 | |
133 | struct print_stack_frame_args | |
134 | { | |
135 | struct frame_info *fi; | |
136 | int level; | |
137 | int source; | |
138 | int args; | |
139 | }; | |
c906108c | 140 | |
a14ed312 | 141 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
142 | |
143 | /* Show and print the frame arguments. | |
144 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 145 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 146 | static int |
fba45db2 | 147 | show_and_print_stack_frame_stub (void *args) |
c906108c | 148 | { |
c5aa993b | 149 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 150 | |
c906108c SS |
151 | print_frame_info (p->fi, p->level, p->source, p->args); |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | /* Show or print the frame arguments. | |
157 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 158 | static int print_stack_frame_stub (void *args); |
c906108c | 159 | static int |
fba45db2 | 160 | print_stack_frame_stub (void *args) |
c906108c | 161 | { |
c5aa993b | 162 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 163 | |
37767e42 | 164 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
165 | return 0; |
166 | } | |
167 | ||
168 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
169 | and LEVEL should be its level in the stack (or -1 for level not | |
170 | defined). */ | |
171 | ||
172 | /* Pass the args the way catch_errors wants them. */ | |
173 | static int | |
fba45db2 | 174 | print_stack_frame_base_stub (char *args) |
c906108c | 175 | { |
c5aa993b | 176 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
177 | |
178 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
179 | return 0; | |
180 | } | |
181 | ||
182 | /* print the frame arguments to the terminal. | |
183 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 184 | static int print_only_stack_frame_stub (void *); |
c906108c | 185 | static int |
fba45db2 | 186 | print_only_stack_frame_stub (void *args) |
c906108c | 187 | { |
c5aa993b | 188 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
189 | |
190 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
195 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
196 | This prints the level, the function executing, the arguments, | |
197 | and the file name and line number. | |
198 | If the pc is not at the beginning of the source line, | |
199 | the actual pc is printed at the beginning. | |
200 | ||
201 | If SOURCE is 1, print the source line as well. | |
202 | If SOURCE is -1, print ONLY the source line. */ | |
203 | ||
204 | static void | |
fba45db2 | 205 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
206 | { |
207 | struct print_stack_frame_args args; | |
208 | ||
209 | args.fi = fi; | |
210 | args.level = level; | |
211 | args.source = source; | |
212 | args.args = 1; | |
213 | ||
7a292a7a | 214 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
215 | } |
216 | ||
217 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
218 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
219 | This prints the level, the function executing, the arguments, | |
220 | and the file name and line number. | |
221 | If the pc is not at the beginning of the source line, | |
222 | the actual pc is printed at the beginning. | |
223 | ||
224 | If SOURCE is 1, print the source line as well. | |
225 | If SOURCE is -1, print ONLY the source line. */ | |
226 | ||
227 | void | |
fba45db2 | 228 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
229 | { |
230 | struct print_stack_frame_args args; | |
231 | ||
232 | args.fi = fi; | |
233 | args.level = level; | |
234 | args.source = source; | |
235 | args.args = 1; | |
236 | ||
7a292a7a | 237 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
238 | } |
239 | ||
240 | ||
241 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
242 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
243 | This prints the level, the function executing, the arguments, | |
244 | and the file name and line number. | |
245 | If the pc is not at the beginning of the source line, | |
246 | the actual pc is printed at the beginning. | |
247 | ||
248 | If SOURCE is 1, print the source line as well. | |
249 | If SOURCE is -1, print ONLY the source line. */ | |
250 | ||
251 | void | |
fba45db2 | 252 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
253 | { |
254 | struct print_stack_frame_args args; | |
255 | ||
256 | args.fi = fi; | |
257 | args.level = level; | |
258 | args.source = source; | |
259 | args.args = 1; | |
260 | ||
c5aa993b | 261 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
262 | } |
263 | ||
264 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
265 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
266 | This prints the level, the function executing, the arguments, | |
267 | and the file name and line number. | |
268 | If the pc is not at the beginning of the source line, | |
269 | the actual pc is printed at the beginning. | |
270 | ||
271 | If SOURCE is 1, print the source line as well. | |
272 | If SOURCE is -1, print ONLY the source line. */ | |
273 | ||
274 | void | |
fba45db2 | 275 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
276 | { |
277 | struct print_stack_frame_args args; | |
278 | ||
279 | args.fi = fi; | |
280 | args.level = level; | |
281 | args.source = source; | |
282 | args.args = 1; | |
283 | ||
7a292a7a | 284 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
285 | } |
286 | ||
c5aa993b JM |
287 | struct print_args_args |
288 | { | |
c906108c SS |
289 | struct symbol *func; |
290 | struct frame_info *fi; | |
d9fcf2fb | 291 | struct ui_file *stream; |
c906108c SS |
292 | }; |
293 | ||
a14ed312 | 294 | static int print_args_stub (PTR); |
c906108c SS |
295 | |
296 | /* Pass the args the way catch_errors wants them. */ | |
297 | ||
298 | static int | |
fba45db2 | 299 | print_args_stub (PTR args) |
c906108c SS |
300 | { |
301 | int numargs; | |
c5aa993b | 302 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 303 | |
392a587b | 304 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 305 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
306 | return 0; |
307 | } | |
308 | ||
309 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
310 | Used in "where" output, also used to emit breakpoint or step |
311 | messages. | |
312 | LEVEL is the level of the frame, or -1 if it is the | |
313 | innermost frame but we don't want to print the level. | |
314 | The meaning of the SOURCE argument is: | |
315 | SRC_LINE: Print only source line | |
316 | LOCATION: Print only location | |
317 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
318 | |
319 | static void | |
fba45db2 | 320 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
321 | { |
322 | struct symtab_and_line sal; | |
c5394b80 JM |
323 | int source_print; |
324 | int location_print; | |
c906108c SS |
325 | |
326 | #if 0 | |
327 | char buf[MAX_REGISTER_RAW_SIZE]; | |
328 | CORE_ADDR sp; | |
329 | ||
330 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
331 | ||
332 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
333 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
334 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
335 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
336 | ||
337 | /* This is not a perfect test, because if a function alloca's some | |
338 | memory, puts some code there, and then jumps into it, then the test | |
339 | will succeed even though there is no call dummy. Probably best is | |
340 | to check for a bp_call_dummy breakpoint. */ | |
341 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
342 | #else | |
343 | if (frame_in_dummy (fi)) | |
344 | #endif | |
345 | { | |
346 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
347 | ||
348 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 349 | to list for this frame. */ |
c906108c SS |
350 | if (level >= 0) |
351 | printf_filtered ("#%-2d ", level); | |
352 | annotate_function_call (); | |
353 | printf_filtered ("<function called from gdb>\n"); | |
354 | annotate_frame_end (); | |
355 | return; | |
356 | } | |
357 | if (fi->signal_handler_caller) | |
358 | { | |
359 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
360 | ||
361 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 362 | to list for this frame. */ |
c906108c SS |
363 | if (level >= 0) |
364 | printf_filtered ("#%-2d ", level); | |
365 | annotate_signal_handler_caller (); | |
366 | printf_filtered ("<signal handler called>\n"); | |
367 | annotate_frame_end (); | |
368 | return; | |
369 | } | |
370 | ||
371 | /* If fi is not the innermost frame, that normally means that fi->pc | |
372 | points to *after* the call instruction, and we want to get the line | |
373 | containing the call, never the next line. But if the next frame is | |
374 | a signal_handler_caller or a dummy frame, then the next frame was | |
375 | not entered as the result of a call, and we want to get the line | |
376 | containing fi->pc. */ | |
377 | sal = | |
378 | find_pc_line (fi->pc, | |
379 | fi->next != NULL | |
380 | && !fi->next->signal_handler_caller | |
381 | && !frame_in_dummy (fi->next)); | |
382 | ||
c5394b80 JM |
383 | location_print = (source == LOCATION |
384 | || source == LOC_AND_ADDRESS | |
385 | || source == SRC_AND_LOC); | |
386 | ||
387 | if (location_print || !sal.symtab) | |
388 | print_frame (fi, level, source, args, sal); | |
389 | ||
390 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
391 | ||
392 | if (source_print && sal.symtab) | |
393 | { | |
394 | int done = 0; | |
395 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
396 | ||
397 | if (annotation_level) | |
398 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
399 | fi->pc); | |
400 | if (!done) | |
401 | { | |
ba4bbdcb KS |
402 | if (print_frame_info_listing_hook) |
403 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
404 | else | |
c5394b80 | 405 | { |
ba4bbdcb KS |
406 | /* We used to do this earlier, but that is clearly |
407 | wrong. This function is used by many different | |
408 | parts of gdb, including normal_stop in infrun.c, | |
409 | which uses this to print out the current PC | |
410 | when we stepi/nexti into the middle of a source | |
411 | line. Only the command line really wants this | |
412 | behavior. Other UIs probably would like the | |
413 | ability to decide for themselves if it is desired. */ | |
414 | if (addressprint && mid_statement) | |
415 | { | |
8b93c638 | 416 | #ifdef UI_OUT |
ba4bbdcb KS |
417 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
418 | ui_out_text (uiout, "\t"); | |
8b93c638 | 419 | #else |
ba4bbdcb KS |
420 | print_address_numeric (fi->pc, 1, gdb_stdout); |
421 | printf_filtered ("\t"); | |
8b93c638 | 422 | #endif |
ba4bbdcb KS |
423 | } |
424 | ||
425 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 426 | } |
c5394b80 JM |
427 | } |
428 | current_source_line = max (sal.line - lines_to_list / 2, 1); | |
429 | } | |
430 | ||
431 | if (source != 0) | |
432 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
433 | ||
434 | annotate_frame_end (); | |
435 | ||
436 | gdb_flush (gdb_stdout); | |
437 | } | |
438 | ||
439 | static void | |
440 | print_frame (struct frame_info *fi, | |
441 | int level, | |
442 | int source, | |
443 | int args, | |
444 | struct symtab_and_line sal) | |
445 | { | |
446 | struct symbol *func; | |
447 | register char *funname = 0; | |
448 | enum language funlang = language_unknown; | |
8b93c638 JM |
449 | #ifdef UI_OUT |
450 | struct ui_stream *stb; | |
451 | struct cleanup *old_chain; | |
e6e0bfab | 452 | struct cleanup *list_chain; |
8b93c638 JM |
453 | |
454 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 455 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 456 | #endif /* UI_OUT */ |
c5394b80 | 457 | |
c906108c SS |
458 | func = find_pc_function (fi->pc); |
459 | if (func) | |
460 | { | |
461 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
462 | function (when we are in the first function in a file which |
463 | is compiled without debugging symbols, the previous function | |
464 | is compiled with debugging symbols, and the "foo.o" symbol | |
465 | that is supposed to tell us where the file with debugging symbols | |
466 | ends has been truncated by ar because it is longer than 15 | |
467 | characters). This also occurs if the user uses asm() to create | |
468 | a function but not stabs for it (in a file compiled -g). | |
469 | ||
470 | So look in the minimal symbol tables as well, and if it comes | |
471 | up with a larger address for the function use that instead. | |
472 | I don't think this can ever cause any problems; there shouldn't | |
473 | be any minimal symbols in the middle of a function; if this is | |
474 | ever changed many parts of GDB will need to be changed (and we'll | |
475 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
476 | |
477 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
478 | if (msymbol != NULL | |
c5aa993b | 479 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
480 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
481 | { | |
482 | #if 0 | |
483 | /* There is no particular reason to think the line number | |
484 | information is wrong. Someone might have just put in | |
485 | a label with asm() but left the line numbers alone. */ | |
486 | /* In this case we have no way of knowing the source file | |
487 | and line number, so don't print them. */ | |
488 | sal.symtab = 0; | |
489 | #endif | |
490 | /* We also don't know anything about the function besides | |
491 | its address and name. */ | |
492 | func = 0; | |
493 | funname = SYMBOL_NAME (msymbol); | |
494 | funlang = SYMBOL_LANGUAGE (msymbol); | |
495 | } | |
496 | else | |
497 | { | |
c5394b80 JM |
498 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
499 | demangled name that we already have stored in the symbol | |
500 | table, but we stored a version with DMGL_PARAMS turned | |
501 | on, and here we don't want to display parameters. So call | |
502 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
503 | that printf_symbol_filtered() will again try to demangle | |
504 | the name on the fly, but the issue is that if | |
505 | cplus_demangle() fails here, it'll fail there too. So we | |
506 | want to catch the failure ("demangled==NULL" case below) | |
507 | here, while we still have our hands on the function | |
508 | symbol.) */ | |
c5aa993b | 509 | char *demangled; |
c906108c SS |
510 | funname = SYMBOL_NAME (func); |
511 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
512 | if (funlang == language_cplus) |
513 | { | |
514 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
515 | if (demangled == NULL) | |
c5394b80 JM |
516 | /* If the demangler fails, try the demangled name from |
517 | the symbol table. This'll have parameters, but | |
518 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
519 | funname = SYMBOL_SOURCE_NAME (func); |
520 | } | |
c906108c SS |
521 | } |
522 | } | |
523 | else | |
524 | { | |
525 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
526 | if (msymbol != NULL) | |
527 | { | |
528 | funname = SYMBOL_NAME (msymbol); | |
529 | funlang = SYMBOL_LANGUAGE (msymbol); | |
530 | } | |
531 | } | |
532 | ||
c5394b80 JM |
533 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
534 | ||
8b93c638 | 535 | #ifdef UI_OUT |
666547aa | 536 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
8b93c638 | 537 | #endif |
c5394b80 JM |
538 | |
539 | if (level >= 0) | |
8b93c638 JM |
540 | { |
541 | #ifdef UI_OUT | |
542 | ui_out_text (uiout, "#"); | |
543 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
544 | ui_out_spaces (uiout, 1); | |
545 | #else | |
546 | printf_filtered ("#%-2d ", level); | |
547 | #endif | |
548 | } | |
c5394b80 JM |
549 | if (addressprint) |
550 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
551 | { | |
552 | annotate_frame_address (); | |
8b93c638 JM |
553 | #ifdef UI_OUT |
554 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
555 | annotate_frame_address_end (); | |
556 | ui_out_text (uiout, " in "); | |
557 | #else | |
c5394b80 JM |
558 | print_address_numeric (fi->pc, 1, gdb_stdout); |
559 | annotate_frame_address_end (); | |
560 | printf_filtered (" in "); | |
8b93c638 | 561 | #endif |
c5394b80 JM |
562 | } |
563 | annotate_frame_function_name (); | |
8b93c638 JM |
564 | #ifdef UI_OUT |
565 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, | |
566 | DMGL_ANSI); | |
567 | ui_out_field_stream (uiout, "func", stb); | |
568 | ui_out_wrap_hint (uiout, " "); | |
569 | #else | |
c5394b80 JM |
570 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, |
571 | DMGL_ANSI); | |
572 | wrap_here (" "); | |
8b93c638 | 573 | #endif |
c5394b80 JM |
574 | annotate_frame_args (); |
575 | ||
8b93c638 JM |
576 | #ifdef UI_OUT |
577 | ui_out_text (uiout, " ("); | |
578 | #else | |
c5394b80 | 579 | fputs_filtered (" (", gdb_stdout); |
8b93c638 | 580 | #endif |
c5394b80 | 581 | if (args) |
c906108c | 582 | { |
c5394b80 | 583 | struct print_args_args args; |
d493eb33 KB |
584 | #ifdef UI_OUT |
585 | struct cleanup *args_list_chain; | |
586 | #endif | |
c5394b80 JM |
587 | args.fi = fi; |
588 | args.func = func; | |
589 | args.stream = gdb_stdout; | |
8b93c638 | 590 | #ifdef UI_OUT |
68c81b54 | 591 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 592 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
593 | /* FIXME: args must be a list. If one argument is a string it will |
594 | have " that will not be properly escaped. */ | |
666547aa | 595 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 596 | do_cleanups (args_list_chain); |
8b93c638 JM |
597 | #else |
598 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); | |
599 | #endif | |
c5394b80 JM |
600 | QUIT; |
601 | } | |
8b93c638 JM |
602 | #ifdef UI_OUT |
603 | ui_out_text (uiout, ")"); | |
604 | #else | |
c5394b80 | 605 | printf_filtered (")"); |
8b93c638 | 606 | #endif |
c5394b80 JM |
607 | if (sal.symtab && sal.symtab->filename) |
608 | { | |
609 | annotate_frame_source_begin (); | |
8b93c638 JM |
610 | #ifdef UI_OUT |
611 | ui_out_wrap_hint (uiout, " "); | |
612 | ui_out_text (uiout, " at "); | |
613 | annotate_frame_source_file (); | |
614 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
615 | annotate_frame_source_file_end (); | |
616 | ui_out_text (uiout, ":"); | |
617 | annotate_frame_source_line (); | |
618 | ui_out_field_int (uiout, "line", sal.line); | |
619 | #else | |
c906108c | 620 | wrap_here (" "); |
c5394b80 JM |
621 | printf_filtered (" at "); |
622 | annotate_frame_source_file (); | |
623 | printf_filtered ("%s", sal.symtab->filename); | |
624 | annotate_frame_source_file_end (); | |
625 | printf_filtered (":"); | |
626 | annotate_frame_source_line (); | |
627 | printf_filtered ("%d", sal.line); | |
8b93c638 | 628 | #endif |
c5394b80 JM |
629 | annotate_frame_source_end (); |
630 | } | |
c906108c | 631 | |
c5394b80 JM |
632 | #ifdef PC_SOLIB |
633 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 634 | { |
c5394b80 JM |
635 | char *lib = PC_SOLIB (fi->pc); |
636 | if (lib) | |
c906108c | 637 | { |
c5394b80 | 638 | annotate_frame_where (); |
8b93c638 JM |
639 | #ifdef UI_OUT |
640 | ui_out_wrap_hint (uiout, " "); | |
641 | ui_out_text (uiout, " from "); | |
642 | ui_out_field_string (uiout, "from", lib); | |
643 | #else | |
c5394b80 JM |
644 | wrap_here (" "); |
645 | printf_filtered (" from %s", lib); | |
8b93c638 | 646 | #endif |
c906108c | 647 | } |
c906108c | 648 | } |
c5394b80 | 649 | #endif /* PC_SOLIB */ |
e514a9d6 | 650 | |
8b93c638 | 651 | #ifdef UI_OUT |
666547aa | 652 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 653 | do_cleanups (list_chain); |
8b93c638 JM |
654 | ui_out_text (uiout, "\n"); |
655 | do_cleanups (old_chain); | |
656 | #else | |
c5394b80 | 657 | printf_filtered ("\n"); |
8b93c638 | 658 | #endif |
c906108c SS |
659 | } |
660 | \f | |
661 | ||
c906108c SS |
662 | /* Show or print the frame info. If this is the tui, it will be shown in |
663 | the source display */ | |
664 | void | |
fba45db2 KB |
665 | print_frame_info (struct frame_info *fi, register int level, int source, |
666 | int args) | |
c906108c | 667 | { |
37767e42 | 668 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
669 | } |
670 | ||
671 | /* Show the frame info. If this is the tui, it will be shown in | |
672 | the source display otherwise, nothing is done */ | |
673 | void | |
fba45db2 | 674 | show_stack_frame (struct frame_info *fi) |
c906108c | 675 | { |
c906108c | 676 | } |
c906108c | 677 | \f |
c5aa993b | 678 | |
c906108c SS |
679 | /* Read a frame specification in whatever the appropriate format is. |
680 | Call error() if the specification is in any way invalid (i.e. | |
681 | this function never returns NULL). */ | |
682 | ||
683 | struct frame_info * | |
fba45db2 | 684 | parse_frame_specification (char *frame_exp) |
c906108c SS |
685 | { |
686 | int numargs = 0; | |
687 | #define MAXARGS 4 | |
688 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 689 | int level; |
c5aa993b | 690 | |
c906108c SS |
691 | if (frame_exp) |
692 | { | |
693 | char *addr_string, *p; | |
694 | struct cleanup *tmp_cleanup; | |
695 | ||
c5aa993b JM |
696 | while (*frame_exp == ' ') |
697 | frame_exp++; | |
c906108c SS |
698 | |
699 | while (*frame_exp) | |
700 | { | |
701 | if (numargs > MAXARGS) | |
702 | error ("Too many args in frame specification"); | |
703 | /* Parse an argument. */ | |
c5aa993b | 704 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 705 | ; |
c5aa993b | 706 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
707 | |
708 | { | |
3d6d86c6 | 709 | struct value *vp; |
ec9a3449 | 710 | |
b8c9b27d | 711 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 712 | |
24285e3a | 713 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 714 | value_as_long and value_as_address rather than calling |
24285e3a DT |
715 | parse_and_eval_long and parse_and_eval_address because |
716 | of the issue of potential side effects from evaluating | |
717 | the expression. */ | |
ec9a3449 DT |
718 | vp = parse_and_eval (addr_string); |
719 | if (numargs == 0) | |
720 | level = value_as_long (vp); | |
721 | ||
1aa20aa8 | 722 | args[numargs++] = value_as_address (vp); |
c906108c SS |
723 | do_cleanups (tmp_cleanup); |
724 | } | |
725 | ||
726 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
727 | while (*p == ' ') |
728 | p++; | |
c906108c SS |
729 | frame_exp = p; |
730 | } | |
731 | } | |
732 | ||
733 | switch (numargs) | |
734 | { | |
735 | case 0: | |
736 | if (selected_frame == NULL) | |
737 | error ("No selected frame."); | |
738 | return selected_frame; | |
739 | /* NOTREACHED */ | |
740 | case 1: | |
741 | { | |
c906108c | 742 | struct frame_info *fid = |
c5aa993b | 743 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
744 | struct frame_info *tfid; |
745 | ||
746 | if (level == 0) | |
747 | /* find_relative_frame was successful */ | |
748 | return fid; | |
749 | ||
750 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
751 | take at least 2 addresses. It is important to detect this case | |
752 | here so that "frame 100" does not give a confusing error message | |
753 | like "frame specification requires two addresses". This of course | |
754 | does not solve the "frame 100" problem for machines on which | |
755 | a frame specification can be made with one address. To solve | |
756 | that, we need a new syntax for a specifying a frame by address. | |
757 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
758 | two args, etc.), but people might think that is too much typing, | |
759 | so I guess *0x23,0x45 would be a possible alternative (commas | |
760 | really should be used instead of spaces to delimit; using spaces | |
761 | normally works in an expression). */ | |
762 | #ifdef SETUP_ARBITRARY_FRAME | |
763 | error ("No frame %d", args[0]); | |
764 | #endif | |
765 | ||
766 | /* If (s)he specifies the frame with an address, he deserves what | |
767 | (s)he gets. Still, give the highest one that matches. */ | |
768 | ||
769 | for (fid = get_current_frame (); | |
770 | fid && fid->frame != args[0]; | |
771 | fid = get_prev_frame (fid)) | |
772 | ; | |
773 | ||
774 | if (fid) | |
775 | while ((tfid = get_prev_frame (fid)) && | |
776 | (tfid->frame == args[0])) | |
777 | fid = tfid; | |
c5aa993b | 778 | |
c906108c SS |
779 | /* We couldn't identify the frame as an existing frame, but |
780 | perhaps we can create one with a single argument. */ | |
781 | } | |
782 | ||
c5aa993b | 783 | default: |
c906108c SS |
784 | #ifdef SETUP_ARBITRARY_FRAME |
785 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
786 | #else | |
787 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 788 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
789 | if (numargs == 1) |
790 | return create_new_frame (args[0], 0); | |
791 | error ("Too many args in frame specification"); | |
792 | #endif | |
793 | /* NOTREACHED */ | |
794 | } | |
795 | /* NOTREACHED */ | |
796 | } | |
797 | ||
798 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
799 | that if it is unsure about the answer, it returns 0 | |
800 | instead of guessing (this happens on the VAX and i960, for example). | |
801 | ||
802 | On most machines, we never have to guess about the args address, | |
803 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
804 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
805 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
806 | #endif | |
807 | ||
808 | /* Print verbosely the selected frame or the frame at address ADDR. | |
809 | This means absolutely all information in the frame is printed. */ | |
810 | ||
811 | static void | |
fba45db2 | 812 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
813 | { |
814 | struct frame_info *fi; | |
815 | struct symtab_and_line sal; | |
816 | struct symbol *func; | |
817 | struct symtab *s; | |
818 | struct frame_info *calling_frame_info; | |
819 | int i, count, numregs; | |
820 | char *funname = 0; | |
821 | enum language funlang = language_unknown; | |
822 | ||
823 | if (!target_has_stack) | |
824 | error ("No stack."); | |
825 | ||
826 | fi = parse_frame_specification (addr_exp); | |
827 | if (fi == NULL) | |
828 | error ("Invalid frame specified."); | |
829 | ||
830 | sal = find_pc_line (fi->pc, | |
831 | fi->next != NULL | |
832 | && !fi->next->signal_handler_caller | |
833 | && !frame_in_dummy (fi->next)); | |
834 | func = get_frame_function (fi); | |
c5aa993b | 835 | s = find_pc_symtab (fi->pc); |
c906108c SS |
836 | if (func) |
837 | { | |
838 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
839 | * the demangled name that we already have stored in | |
840 | * the symbol table, but we stored a version with | |
841 | * DMGL_PARAMS turned on, and here we don't want | |
842 | * to display parameters. So call the demangler again, | |
843 | * with DMGL_ANSI only. RT | |
844 | * (Yes, I know that printf_symbol_filtered() will | |
845 | * again try to demangle the name on the fly, but | |
846 | * the issue is that if cplus_demangle() fails here, | |
847 | * it'll fail there too. So we want to catch the failure | |
848 | * ("demangled==NULL" case below) here, while we still | |
849 | * have our hands on the function symbol.) | |
850 | */ | |
c5aa993b JM |
851 | char *demangled; |
852 | funname = SYMBOL_NAME (func); | |
853 | funlang = SYMBOL_LANGUAGE (func); | |
854 | if (funlang == language_cplus) | |
855 | { | |
856 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
857 | /* If the demangler fails, try the demangled name | |
858 | * from the symbol table. This'll have parameters, | |
859 | * but that's preferable to diplaying a mangled name. | |
860 | */ | |
861 | if (demangled == NULL) | |
862 | funname = SYMBOL_SOURCE_NAME (func); | |
863 | } | |
c906108c SS |
864 | } |
865 | else | |
866 | { | |
867 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
868 | if (msymbol != NULL) | |
869 | { | |
870 | funname = SYMBOL_NAME (msymbol); | |
871 | funlang = SYMBOL_LANGUAGE (msymbol); | |
872 | } | |
873 | } | |
874 | calling_frame_info = get_prev_frame (fi); | |
875 | ||
876 | if (!addr_exp && selected_frame_level >= 0) | |
877 | { | |
878 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
879 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
880 | printf_filtered (":\n"); | |
881 | } | |
882 | else | |
883 | { | |
884 | printf_filtered ("Stack frame at "); | |
885 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
886 | printf_filtered (":\n"); | |
887 | } | |
888 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
889 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
890 | ||
891 | wrap_here (" "); | |
892 | if (funname) | |
893 | { | |
894 | printf_filtered (" in "); | |
895 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
896 | DMGL_ANSI | DMGL_PARAMS); | |
897 | } | |
898 | wrap_here (" "); | |
899 | if (sal.symtab) | |
900 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
901 | puts_filtered ("; "); | |
902 | wrap_here (" "); | |
903 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
904 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
905 | printf_filtered ("\n"); | |
906 | ||
907 | { | |
392a587b JM |
908 | int frameless; |
909 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
910 | if (frameless) |
911 | printf_filtered (" (FRAMELESS),"); | |
912 | } | |
913 | ||
914 | if (calling_frame_info) | |
915 | { | |
916 | printf_filtered (" called by frame at "); | |
917 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
918 | } | |
919 | if (fi->next && calling_frame_info) | |
920 | puts_filtered (","); | |
921 | wrap_here (" "); | |
922 | if (fi->next) | |
923 | { | |
924 | printf_filtered (" caller of frame at "); | |
925 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
926 | } | |
927 | if (fi->next || calling_frame_info) | |
928 | puts_filtered ("\n"); | |
929 | if (s) | |
930 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
931 | ||
932 | #ifdef PRINT_EXTRA_FRAME_INFO | |
933 | PRINT_EXTRA_FRAME_INFO (fi); | |
934 | #endif | |
935 | ||
936 | { | |
937 | /* Address of the argument list for this frame, or 0. */ | |
938 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
939 | /* Number of args for this frame, or -1 if unknown. */ | |
940 | int numargs; | |
941 | ||
942 | if (arg_list == 0) | |
943 | printf_filtered (" Arglist at unknown address.\n"); | |
944 | else | |
945 | { | |
946 | printf_filtered (" Arglist at "); | |
947 | print_address_numeric (arg_list, 1, gdb_stdout); | |
948 | printf_filtered (","); | |
949 | ||
392a587b | 950 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
951 | if (numargs < 0) |
952 | puts_filtered (" args: "); | |
953 | else if (numargs == 0) | |
954 | puts_filtered (" no args."); | |
955 | else if (numargs == 1) | |
956 | puts_filtered (" 1 arg: "); | |
957 | else | |
958 | printf_filtered (" %d args: ", numargs); | |
959 | print_frame_args (func, fi, numargs, gdb_stdout); | |
960 | puts_filtered ("\n"); | |
961 | } | |
962 | } | |
963 | { | |
964 | /* Address of the local variables for this frame, or 0. */ | |
965 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
966 | ||
967 | if (arg_list == 0) | |
968 | printf_filtered (" Locals at unknown address,"); | |
969 | else | |
970 | { | |
971 | printf_filtered (" Locals at "); | |
972 | print_address_numeric (arg_list, 1, gdb_stdout); | |
973 | printf_filtered (","); | |
974 | } | |
975 | } | |
976 | ||
977 | FRAME_INIT_SAVED_REGS (fi); | |
978 | if (fi->saved_regs != NULL) | |
979 | { | |
980 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 981 | actually the value of the previous frame's sp. */ |
c906108c SS |
982 | printf_filtered (" Previous frame's sp is "); |
983 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
984 | printf_filtered ("\n"); | |
985 | count = 0; | |
64485362 | 986 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
987 | for (i = 0; i < numregs; i++) |
988 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
989 | { | |
990 | if (count == 0) | |
991 | puts_filtered (" Saved registers:\n "); | |
992 | else | |
993 | puts_filtered (","); | |
994 | wrap_here (" "); | |
995 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
996 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
997 | count++; | |
998 | } | |
999 | if (count) | |
1000 | puts_filtered ("\n"); | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | /* We could get some information about saved registers by | |
c5aa993b JM |
1005 | calling get_saved_register on each register. Which info goes |
1006 | with which frame is necessarily lost, however, and I suspect | |
1007 | that the users don't care whether they get the info. */ | |
c906108c SS |
1008 | puts_filtered ("\n"); |
1009 | } | |
1010 | } | |
1011 | ||
1012 | #if 0 | |
1013 | /* Set a limit on the number of frames printed by default in a | |
1014 | backtrace. */ | |
1015 | ||
1016 | static int backtrace_limit; | |
1017 | ||
1018 | static void | |
fba45db2 | 1019 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1020 | { |
bb518678 | 1021 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1022 | |
1023 | if (count < 0) | |
1024 | error ("Negative argument not meaningful as backtrace limit."); | |
1025 | ||
1026 | backtrace_limit = count; | |
1027 | } | |
1028 | ||
1029 | static void | |
fba45db2 | 1030 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1031 | { |
1032 | if (arg) | |
1033 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1034 | ||
1035 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1036 | } | |
1037 | #endif | |
1038 | ||
1039 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1040 | ||
a14ed312 KB |
1041 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1042 | int from_tty); | |
c906108c | 1043 | static void |
fba45db2 | 1044 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1045 | { |
1046 | struct frame_info *fi; | |
1047 | register int count; | |
1048 | register int i; | |
1049 | register struct frame_info *trailing; | |
1050 | register int trailing_level; | |
1051 | ||
1052 | if (!target_has_stack) | |
1053 | error ("No stack."); | |
1054 | ||
1055 | /* The following code must do two things. First, it must | |
1056 | set the variable TRAILING to the frame from which we should start | |
1057 | printing. Second, it must set the variable count to the number | |
1058 | of frames which we should print, or -1 if all of them. */ | |
1059 | trailing = get_current_frame (); | |
d082b2bb AC |
1060 | |
1061 | /* The target can be in a state where there is no valid frames | |
1062 | (e.g., just connected). */ | |
1063 | if (trailing == NULL) | |
1064 | error ("No stack."); | |
1065 | ||
c906108c SS |
1066 | trailing_level = 0; |
1067 | if (count_exp) | |
1068 | { | |
bb518678 | 1069 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1070 | if (count < 0) |
1071 | { | |
1072 | struct frame_info *current; | |
1073 | ||
1074 | count = -count; | |
1075 | ||
1076 | current = trailing; | |
1077 | while (current && count--) | |
1078 | { | |
1079 | QUIT; | |
1080 | current = get_prev_frame (current); | |
1081 | } | |
c5aa993b | 1082 | |
c906108c SS |
1083 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1084 | will be COUNT below it. */ | |
1085 | while (current) | |
1086 | { | |
1087 | QUIT; | |
1088 | trailing = get_prev_frame (trailing); | |
1089 | current = get_prev_frame (current); | |
1090 | trailing_level++; | |
1091 | } | |
c5aa993b | 1092 | |
c906108c SS |
1093 | count = -1; |
1094 | } | |
1095 | } | |
1096 | else | |
1097 | count = -1; | |
1098 | ||
1099 | if (info_verbose) | |
1100 | { | |
1101 | struct partial_symtab *ps; | |
c5aa993b | 1102 | |
c906108c | 1103 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1104 | a separate pass so that "Reading in symbols for xxx" messages |
1105 | don't screw up the appearance of the backtrace. Also | |
1106 | if people have strong opinions against reading symbols for | |
1107 | backtrace this may have to be an option. */ | |
c906108c SS |
1108 | i = count; |
1109 | for (fi = trailing; | |
1110 | fi != NULL && i--; | |
1111 | fi = get_prev_frame (fi)) | |
1112 | { | |
1113 | QUIT; | |
1114 | ps = find_pc_psymtab (fi->pc); | |
1115 | if (ps) | |
1116 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | for (i = 0, fi = trailing; | |
1121 | fi && count--; | |
1122 | i++, fi = get_prev_frame (fi)) | |
1123 | { | |
1124 | QUIT; | |
1125 | ||
1126 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1127 | means further attempts to backtrace would fail (on the other |
1128 | hand, perhaps the code does or could be fixed to make sure | |
1129 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1130 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1131 | if (show_locals) | |
c5aa993b | 1132 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1133 | } |
1134 | ||
1135 | /* If we've stopped before the end, mention that. */ | |
1136 | if (fi && from_tty) | |
1137 | printf_filtered ("(More stack frames follow...)\n"); | |
1138 | } | |
1139 | ||
1140 | static void | |
fba45db2 | 1141 | backtrace_command (char *arg, int from_tty) |
c906108c | 1142 | { |
c5aa993b JM |
1143 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1144 | char **argv = (char **) NULL; | |
1145 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1146 | char *argPtr = arg; | |
c906108c | 1147 | |
c5aa993b | 1148 | if (arg != (char *) NULL) |
c906108c SS |
1149 | { |
1150 | int i; | |
1151 | ||
c5aa993b | 1152 | argv = buildargv (arg); |
7a292a7a | 1153 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1154 | argc = 0; |
c5aa993b JM |
1155 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1156 | { | |
745b8ca0 | 1157 | unsigned int j; |
c5aa993b JM |
1158 | |
1159 | for (j = 0; (j < strlen (argv[i])); j++) | |
1160 | argv[i][j] = tolower (argv[i][j]); | |
1161 | ||
1162 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1163 | argIndicatingFullTrace = argc; | |
1164 | else | |
1165 | { | |
1166 | argc++; | |
1167 | totArgLen += strlen (argv[i]); | |
1168 | } | |
1169 | } | |
c906108c SS |
1170 | totArgLen += argc; |
1171 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1172 | { |
1173 | if (totArgLen > 0) | |
1174 | { | |
1175 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1176 | if (!argPtr) | |
1177 | nomem (0); | |
1178 | else | |
1179 | { | |
1180 | memset (argPtr, 0, totArgLen + 1); | |
1181 | for (i = 0; (i < (argc + 1)); i++) | |
1182 | { | |
1183 | if (i != argIndicatingFullTrace) | |
1184 | { | |
1185 | strcat (argPtr, argv[i]); | |
1186 | strcat (argPtr, " "); | |
1187 | } | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | else | |
1192 | argPtr = (char *) NULL; | |
1193 | } | |
c906108c SS |
1194 | } |
1195 | ||
1196 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1197 | ||
1198 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1199 | xfree (argPtr); |
c906108c SS |
1200 | |
1201 | if (old_chain) | |
c5aa993b | 1202 | do_cleanups (old_chain); |
c906108c SS |
1203 | } |
1204 | ||
a14ed312 | 1205 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1206 | static void |
fba45db2 | 1207 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1208 | { |
1209 | backtrace_command_1 (arg, 1, from_tty); | |
1210 | } | |
c906108c | 1211 | \f |
c5aa993b | 1212 | |
c906108c SS |
1213 | /* Print the local variables of a block B active in FRAME. |
1214 | Return 1 if any variables were printed; 0 otherwise. */ | |
1215 | ||
1216 | static int | |
fba45db2 KB |
1217 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1218 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1219 | { |
c906108c SS |
1220 | register int i, j; |
1221 | register struct symbol *sym; | |
1222 | register int values_printed = 0; | |
1223 | ||
e88c90f2 | 1224 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1225 | { |
c906108c SS |
1226 | switch (SYMBOL_CLASS (sym)) |
1227 | { | |
1228 | case LOC_LOCAL: | |
1229 | case LOC_REGISTER: | |
1230 | case LOC_STATIC: | |
1231 | case LOC_BASEREG: | |
1232 | values_printed = 1; | |
1233 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1234 | fputs_filtered ("\t", stream); |
c906108c SS |
1235 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1236 | fputs_filtered (" = ", stream); | |
1237 | print_variable_value (sym, fi, stream); | |
1238 | fprintf_filtered (stream, "\n"); | |
1239 | break; | |
1240 | ||
1241 | default: | |
1242 | /* Ignore symbols which are not locals. */ | |
1243 | break; | |
1244 | } | |
1245 | } | |
1246 | return values_printed; | |
1247 | } | |
1248 | ||
1249 | /* Same, but print labels. */ | |
1250 | ||
1251 | static int | |
fba45db2 KB |
1252 | print_block_frame_labels (struct block *b, int *have_default, |
1253 | register struct ui_file *stream) | |
c906108c | 1254 | { |
c906108c SS |
1255 | register int i; |
1256 | register struct symbol *sym; | |
1257 | register int values_printed = 0; | |
1258 | ||
e88c90f2 | 1259 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1260 | { |
c906108c SS |
1261 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1262 | { | |
1263 | if (*have_default) | |
1264 | continue; | |
1265 | *have_default = 1; | |
1266 | } | |
1267 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1268 | { | |
1269 | struct symtab_and_line sal; | |
1270 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1271 | values_printed = 1; | |
1272 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1273 | if (addressprint) | |
1274 | { | |
1275 | fprintf_filtered (stream, " "); | |
1276 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1277 | } | |
1278 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1279 | sal.symtab->filename, sal.line); | |
1280 | } | |
1281 | } | |
1282 | return values_printed; | |
1283 | } | |
1284 | ||
1285 | /* Print on STREAM all the local variables in frame FRAME, | |
1286 | including all the blocks active in that frame | |
1287 | at its current pc. | |
1288 | ||
1289 | Returns 1 if the job was done, | |
1290 | or 0 if nothing was printed because we have no info | |
1291 | on the function running in FRAME. */ | |
1292 | ||
1293 | static void | |
fba45db2 KB |
1294 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1295 | register struct ui_file *stream) | |
c906108c SS |
1296 | { |
1297 | register struct block *block = get_frame_block (fi); | |
1298 | register int values_printed = 0; | |
1299 | ||
1300 | if (block == 0) | |
1301 | { | |
1302 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1303 | return; | |
1304 | } | |
c5aa993b | 1305 | |
c906108c SS |
1306 | while (block != 0) |
1307 | { | |
1308 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1309 | values_printed = 1; | |
1310 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1311 | Don't continue to its superblock, the block of |
1312 | per-file symbols. */ | |
c906108c SS |
1313 | if (BLOCK_FUNCTION (block)) |
1314 | break; | |
1315 | block = BLOCK_SUPERBLOCK (block); | |
1316 | } | |
1317 | ||
1318 | if (!values_printed) | |
1319 | { | |
1320 | fprintf_filtered (stream, "No locals.\n"); | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | /* Same, but print labels. */ | |
1325 | ||
1326 | static void | |
fba45db2 KB |
1327 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1328 | register struct ui_file *stream) | |
c906108c SS |
1329 | { |
1330 | register struct blockvector *bl; | |
1331 | register struct block *block = get_frame_block (fi); | |
1332 | register int values_printed = 0; | |
1333 | int index, have_default = 0; | |
1334 | char *blocks_printed; | |
1335 | CORE_ADDR pc = fi->pc; | |
1336 | ||
1337 | if (block == 0) | |
1338 | { | |
1339 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1340 | return; | |
1341 | } | |
1342 | ||
1343 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1344 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1345 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1346 | ||
1347 | while (block != 0) | |
1348 | { | |
1349 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1350 | int last_index; | |
1351 | ||
1352 | if (bl != blockvector_for_pc (end, &index)) | |
1353 | error ("blockvector blotch"); | |
1354 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1355 | error ("blockvector botch"); | |
1356 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1357 | index += 1; | |
1358 | ||
1359 | /* Don't print out blocks that have gone by. */ | |
1360 | while (index < last_index | |
1361 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1362 | index++; | |
1363 | ||
1364 | while (index < last_index | |
1365 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1366 | { | |
1367 | if (blocks_printed[index] == 0) | |
1368 | { | |
1369 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1370 | values_printed = 1; | |
1371 | blocks_printed[index] = 1; | |
1372 | } | |
1373 | index++; | |
1374 | } | |
1375 | if (have_default) | |
1376 | return; | |
1377 | if (values_printed && this_level_only) | |
1378 | return; | |
1379 | ||
1380 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1381 | Don't continue to its superblock, the block of |
1382 | per-file symbols. */ | |
c906108c SS |
1383 | if (BLOCK_FUNCTION (block)) |
1384 | break; | |
1385 | block = BLOCK_SUPERBLOCK (block); | |
1386 | } | |
1387 | ||
1388 | if (!values_printed && !this_level_only) | |
1389 | { | |
1390 | fprintf_filtered (stream, "No catches.\n"); | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | /* ARGSUSED */ | |
1395 | void | |
fba45db2 | 1396 | locals_info (char *args, int from_tty) |
c906108c SS |
1397 | { |
1398 | if (!selected_frame) | |
1399 | error ("No frame selected."); | |
1400 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1401 | } | |
1402 | ||
1403 | static void | |
fba45db2 | 1404 | catch_info (char *ignore, int from_tty) |
c906108c | 1405 | { |
c5aa993b | 1406 | struct symtab_and_line *sal; |
c906108c | 1407 | |
c5aa993b | 1408 | /* Check for target support for exception handling */ |
c906108c SS |
1409 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1410 | if (sal) | |
1411 | { | |
1412 | /* Currently not handling this */ | |
1413 | /* Ideally, here we should interact with the C++ runtime | |
1414 | system to find the list of active handlers, etc. */ | |
1415 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1416 | #if 0 | |
c5aa993b JM |
1417 | if (!selected_frame) |
1418 | error ("No frame selected."); | |
c906108c SS |
1419 | #endif |
1420 | } | |
1421 | else | |
1422 | { | |
c5aa993b | 1423 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1424 | if (!selected_frame) |
c5aa993b JM |
1425 | error ("No frame selected."); |
1426 | ||
c906108c SS |
1427 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1428 | } | |
1429 | } | |
1430 | ||
1431 | static void | |
fba45db2 KB |
1432 | print_frame_arg_vars (register struct frame_info *fi, |
1433 | register struct ui_file *stream) | |
c906108c SS |
1434 | { |
1435 | struct symbol *func = get_frame_function (fi); | |
1436 | register struct block *b; | |
c906108c SS |
1437 | register int i; |
1438 | register struct symbol *sym, *sym2; | |
1439 | register int values_printed = 0; | |
1440 | ||
1441 | if (func == 0) | |
1442 | { | |
1443 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1444 | return; | |
1445 | } | |
1446 | ||
1447 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1448 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1449 | { |
c906108c SS |
1450 | switch (SYMBOL_CLASS (sym)) |
1451 | { | |
1452 | case LOC_ARG: | |
1453 | case LOC_LOCAL_ARG: | |
1454 | case LOC_REF_ARG: | |
1455 | case LOC_REGPARM: | |
1456 | case LOC_REGPARM_ADDR: | |
1457 | case LOC_BASEREG_ARG: | |
1458 | values_printed = 1; | |
1459 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1460 | fputs_filtered (" = ", stream); | |
1461 | ||
1462 | /* We have to look up the symbol because arguments can have | |
1463 | two entries (one a parameter, one a local) and the one we | |
1464 | want is the local, which lookup_symbol will find for us. | |
1465 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1466 | small structure and gcc2 when the argument type is float | |
1467 | and it is passed as a double and converted to float by | |
1468 | the prologue (in the latter case the type of the LOC_ARG | |
1469 | symbol is double and the type of the LOC_LOCAL symbol is | |
1470 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1471 | are not combined in symbol-reading. */ | |
1472 | ||
1473 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1474 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1475 | print_variable_value (sym2, fi, stream); |
1476 | fprintf_filtered (stream, "\n"); | |
1477 | break; | |
1478 | ||
1479 | default: | |
1480 | /* Don't worry about things which aren't arguments. */ | |
1481 | break; | |
1482 | } | |
1483 | } | |
c906108c SS |
1484 | if (!values_printed) |
1485 | { | |
1486 | fprintf_filtered (stream, "No arguments.\n"); | |
1487 | } | |
1488 | } | |
1489 | ||
1490 | void | |
fba45db2 | 1491 | args_info (char *ignore, int from_tty) |
c906108c SS |
1492 | { |
1493 | if (!selected_frame) | |
1494 | error ("No frame selected."); | |
1495 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1496 | } | |
1497 | ||
1498 | ||
1499 | static void | |
fba45db2 | 1500 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1501 | { |
c5aa993b JM |
1502 | args_info (ignore, from_tty); |
1503 | locals_info (ignore, from_tty); | |
c906108c | 1504 | } |
c906108c | 1505 | \f |
c5aa993b | 1506 | |
c906108c SS |
1507 | /* Select frame FI, and note that its stack level is LEVEL. |
1508 | LEVEL may be -1 if an actual level number is not known. */ | |
1509 | ||
1510 | void | |
fba45db2 | 1511 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1512 | { |
1513 | register struct symtab *s; | |
1514 | ||
1515 | selected_frame = fi; | |
1516 | selected_frame_level = level; | |
1517 | if (selected_frame_level_changed_hook) | |
1518 | selected_frame_level_changed_hook (level); | |
1519 | ||
1520 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1521 | source language of this frame, and switch to it if desired. */ | |
1522 | if (fi) | |
c5aa993b JM |
1523 | { |
1524 | s = find_pc_symtab (fi->pc); | |
1525 | if (s | |
1526 | && s->language != current_language->la_language | |
1527 | && s->language != language_unknown | |
1528 | && language_mode == language_mode_auto) | |
1529 | { | |
1530 | set_language (s->language); | |
1531 | } | |
c906108c | 1532 | } |
c906108c | 1533 | } |
c906108c | 1534 | \f |
c5aa993b | 1535 | |
c906108c SS |
1536 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1537 | the stack frame and show the source if this is the tui version. */ | |
1538 | void | |
fba45db2 | 1539 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1540 | { |
c5aa993b | 1541 | select_frame (fi, level); |
c906108c SS |
1542 | if (fi) |
1543 | { | |
c5aa993b | 1544 | print_stack_frame (fi, level, 1); |
c906108c SS |
1545 | } |
1546 | } | |
c906108c | 1547 | \f |
c5aa993b | 1548 | |
c906108c SS |
1549 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1550 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1551 | ||
1552 | void | |
fba45db2 | 1553 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1554 | { |
1555 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1556 | *levelp = selected_frame_level; | |
1557 | } | |
1558 | ||
1559 | /* Return the symbol-block in which the selected frame is executing. | |
1560 | Can return zero under various legitimate circumstances. */ | |
1561 | ||
1562 | struct block * | |
fba45db2 | 1563 | get_selected_block (void) |
c906108c SS |
1564 | { |
1565 | if (!target_has_stack) | |
1566 | return 0; | |
1567 | ||
1568 | if (!selected_frame) | |
1569 | return get_current_block (); | |
1570 | return get_frame_block (selected_frame); | |
1571 | } | |
1572 | ||
1573 | /* Find a frame a certain number of levels away from FRAME. | |
1574 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1575 | Positive means go to earlier frames (up); negative, the reverse. | |
1576 | The int that contains the number of levels is counted toward | |
1577 | zero as the frames for those levels are found. | |
1578 | If the top or bottom frame is reached, that frame is returned, | |
1579 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1580 | how much farther the original request asked to go. */ | |
1581 | ||
1582 | struct frame_info * | |
fba45db2 KB |
1583 | find_relative_frame (register struct frame_info *frame, |
1584 | register int *level_offset_ptr) | |
c906108c SS |
1585 | { |
1586 | register struct frame_info *prev; | |
1587 | register struct frame_info *frame1; | |
1588 | ||
1589 | /* Going up is simple: just do get_prev_frame enough times | |
1590 | or until initial frame is reached. */ | |
1591 | while (*level_offset_ptr > 0) | |
1592 | { | |
1593 | prev = get_prev_frame (frame); | |
1594 | if (prev == 0) | |
1595 | break; | |
1596 | (*level_offset_ptr)--; | |
1597 | frame = prev; | |
1598 | } | |
1599 | /* Going down is just as simple. */ | |
1600 | if (*level_offset_ptr < 0) | |
1601 | { | |
c5aa993b JM |
1602 | while (*level_offset_ptr < 0) |
1603 | { | |
1604 | frame1 = get_next_frame (frame); | |
1605 | if (!frame1) | |
1606 | break; | |
1607 | frame = frame1; | |
1608 | (*level_offset_ptr)++; | |
1609 | } | |
c906108c SS |
1610 | } |
1611 | return frame; | |
1612 | } | |
1613 | ||
1614 | /* The "select_frame" command. With no arg, NOP. | |
1615 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1616 | valid level. Otherwise, treat level_exp as an address expression | |
1617 | and select it. See parse_frame_specification for more info on proper | |
1618 | frame expressions. */ | |
1619 | ||
1620 | /* ARGSUSED */ | |
8b93c638 JM |
1621 | #ifdef UI_OUT |
1622 | void | |
fba45db2 | 1623 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1624 | { |
1625 | select_frame_command (level_exp, from_tty); | |
1626 | } | |
1627 | #endif | |
c906108c | 1628 | static void |
fba45db2 | 1629 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1630 | { |
1631 | register struct frame_info *frame, *frame1; | |
1632 | unsigned int level = 0; | |
1633 | ||
1634 | if (!target_has_stack) | |
1635 | error ("No stack."); | |
1636 | ||
1637 | frame = parse_frame_specification (level_exp); | |
1638 | ||
1639 | /* Try to figure out what level this frame is. But if there is | |
1640 | no current stack, don't error out -- let the user set one. */ | |
1641 | frame1 = 0; | |
c5aa993b JM |
1642 | if (get_current_frame ()) |
1643 | { | |
1644 | for (frame1 = get_prev_frame (0); | |
1645 | frame1 && frame1 != frame; | |
1646 | frame1 = get_prev_frame (frame1)) | |
1647 | level++; | |
1648 | } | |
c906108c SS |
1649 | |
1650 | if (!frame1) | |
1651 | level = 0; | |
1652 | ||
1653 | select_frame (frame, level); | |
1654 | } | |
1655 | ||
1656 | /* The "frame" command. With no arg, print selected frame briefly. | |
1657 | With arg, behaves like select_frame and then prints the selected | |
1658 | frame. */ | |
1659 | ||
1660 | void | |
fba45db2 | 1661 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1662 | { |
1663 | select_frame_command (level_exp, from_tty); | |
1664 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1665 | } | |
1666 | ||
1667 | /* The XDB Compatibility command to print the current frame. */ | |
1668 | ||
7a292a7a | 1669 | static void |
fba45db2 | 1670 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1671 | { |
1672 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1673 | error ("No stack."); |
7a292a7a SS |
1674 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1675 | } | |
c906108c SS |
1676 | |
1677 | /* Select the frame up one or COUNT stack levels | |
1678 | from the previously selected frame, and print it briefly. */ | |
1679 | ||
1680 | /* ARGSUSED */ | |
1681 | static void | |
fba45db2 | 1682 | up_silently_base (char *count_exp) |
c906108c SS |
1683 | { |
1684 | register struct frame_info *fi; | |
1685 | int count = 1, count1; | |
1686 | if (count_exp) | |
bb518678 | 1687 | count = parse_and_eval_long (count_exp); |
c906108c | 1688 | count1 = count; |
c5aa993b | 1689 | |
c906108c SS |
1690 | if (target_has_stack == 0 || selected_frame == 0) |
1691 | error ("No stack."); | |
1692 | ||
1693 | fi = find_relative_frame (selected_frame, &count1); | |
1694 | if (count1 != 0 && count_exp == 0) | |
1695 | error ("Initial frame selected; you cannot go up."); | |
1696 | select_frame (fi, selected_frame_level + count - count1); | |
1697 | } | |
1698 | ||
1699 | static void | |
fba45db2 | 1700 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1701 | { |
c5aa993b | 1702 | up_silently_base (count_exp); |
c906108c SS |
1703 | } |
1704 | ||
1705 | static void | |
fba45db2 | 1706 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1707 | { |
1708 | up_silently_base (count_exp); | |
1709 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1710 | } | |
1711 | ||
1712 | /* Select the frame down one or COUNT stack levels | |
1713 | from the previously selected frame, and print it briefly. */ | |
1714 | ||
1715 | /* ARGSUSED */ | |
1716 | static void | |
fba45db2 | 1717 | down_silently_base (char *count_exp) |
c906108c SS |
1718 | { |
1719 | register struct frame_info *frame; | |
1720 | int count = -1, count1; | |
1721 | if (count_exp) | |
bb518678 | 1722 | count = -parse_and_eval_long (count_exp); |
c906108c | 1723 | count1 = count; |
c5aa993b | 1724 | |
c906108c SS |
1725 | if (target_has_stack == 0 || selected_frame == 0) |
1726 | error ("No stack."); | |
1727 | ||
1728 | frame = find_relative_frame (selected_frame, &count1); | |
1729 | if (count1 != 0 && count_exp == 0) | |
1730 | { | |
1731 | ||
1732 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1733 | means to really go down (and let me know if that is |
1734 | impossible), but "down 9999" can be used to mean go all the way | |
1735 | down without getting an error. */ | |
c906108c SS |
1736 | |
1737 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1738 | } | |
1739 | ||
1740 | select_frame (frame, selected_frame_level + count - count1); | |
1741 | } | |
1742 | ||
1743 | /* ARGSUSED */ | |
1744 | static void | |
fba45db2 | 1745 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1746 | { |
1747 | down_silently_base (count_exp); | |
c906108c SS |
1748 | } |
1749 | ||
1750 | static void | |
fba45db2 | 1751 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1752 | { |
1753 | down_silently_base (count_exp); | |
1754 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1755 | } | |
1756 | \f | |
8b93c638 JM |
1757 | #ifdef UI_OUT |
1758 | void | |
fba45db2 | 1759 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1760 | { |
1761 | return_command (retval_exp, from_tty); | |
1762 | } | |
1763 | #endif | |
c906108c | 1764 | static void |
fba45db2 | 1765 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1766 | { |
1767 | struct symbol *thisfun; | |
1768 | CORE_ADDR selected_frame_addr; | |
1769 | CORE_ADDR selected_frame_pc; | |
1770 | struct frame_info *frame; | |
3d6d86c6 | 1771 | struct value *return_value = NULL; |
c906108c SS |
1772 | |
1773 | if (selected_frame == NULL) | |
1774 | error ("No selected frame."); | |
1775 | thisfun = get_frame_function (selected_frame); | |
1776 | selected_frame_addr = FRAME_FP (selected_frame); | |
1777 | selected_frame_pc = selected_frame->pc; | |
1778 | ||
1779 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1780 | ||
1781 | if (retval_exp) | |
1782 | { | |
1783 | struct type *return_type = NULL; | |
1784 | ||
1785 | return_value = parse_and_eval (retval_exp); | |
1786 | ||
1787 | /* Cast return value to the return type of the function. */ | |
1788 | if (thisfun != NULL) | |
1789 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1790 | if (return_type == NULL) | |
1791 | return_type = builtin_type_int; | |
1792 | return_value = value_cast (return_type, return_value); | |
1793 | ||
1794 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1795 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1796 | if (VALUE_LAZY (return_value)) |
1797 | value_fetch_lazy (return_value); | |
1798 | } | |
1799 | ||
1800 | /* If interactive, require confirmation. */ | |
1801 | ||
1802 | if (from_tty) | |
1803 | { | |
1804 | if (thisfun != 0) | |
1805 | { | |
1806 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1807 | { | |
1808 | error ("Not confirmed."); | |
1809 | /* NOTREACHED */ | |
1810 | } | |
1811 | } | |
c5aa993b JM |
1812 | else if (!query ("Make selected stack frame return now? ")) |
1813 | error ("Not confirmed."); | |
c906108c SS |
1814 | } |
1815 | ||
1816 | /* Do the real work. Pop until the specified frame is current. We | |
1817 | use this method because the selected_frame is not valid after | |
1818 | a POP_FRAME. The pc comparison makes this work even if the | |
1819 | selected frame shares its fp with another frame. */ | |
1820 | ||
c5aa993b | 1821 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1822 | || selected_frame_pc != frame->pc) |
1823 | POP_FRAME; | |
1824 | ||
1825 | /* Then pop that frame. */ | |
1826 | ||
1827 | POP_FRAME; | |
1828 | ||
1829 | /* Compute the return value (if any) and store in the place | |
1830 | for return values. */ | |
1831 | ||
1832 | if (retval_exp) | |
1833 | set_return_value (return_value); | |
1834 | ||
1a2aab69 PS |
1835 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1836 | ||
1837 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1838 | FRAME_FP (get_current_frame ()))) | |
1839 | POP_FRAME; | |
1840 | ||
c906108c SS |
1841 | /* If interactive, print the frame that is now current. */ |
1842 | ||
1843 | if (from_tty) | |
1844 | frame_command ("0", 1); | |
1845 | else | |
1846 | select_frame_command ("0", 0); | |
1847 | } | |
1848 | ||
1849 | /* Sets the scope to input function name, provided that the | |
1850 | function is within the current stack frame */ | |
1851 | ||
1852 | struct function_bounds | |
1853 | { | |
1854 | CORE_ADDR low, high; | |
1855 | }; | |
1856 | ||
a14ed312 | 1857 | static void func_command (char *arg, int from_tty); |
c906108c | 1858 | static void |
fba45db2 | 1859 | func_command (char *arg, int from_tty) |
c906108c SS |
1860 | { |
1861 | struct frame_info *fp; | |
1862 | int found = 0; | |
1863 | struct symtabs_and_lines sals; | |
1864 | int i; | |
1865 | int level = 1; | |
1866 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1867 | ||
1868 | if (arg != (char *) NULL) | |
1869 | return; | |
1870 | ||
1871 | fp = parse_frame_specification ("0"); | |
1872 | sals = decode_line_spec (arg, 1); | |
1873 | func_bounds = (struct function_bounds *) xmalloc ( | |
1874 | sizeof (struct function_bounds) * sals.nelts); | |
1875 | for (i = 0; (i < sals.nelts && !found); i++) | |
1876 | { | |
1877 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1878 | find_pc_partial_function (sals.sals[i].pc, | |
1879 | (char **) NULL, | |
1880 | &func_bounds[i].low, | |
1881 | &func_bounds[i].high) == 0) | |
1882 | { | |
1883 | func_bounds[i].low = | |
1884 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | do | |
1889 | { | |
1890 | for (i = 0; (i < sals.nelts && !found); i++) | |
1891 | found = (fp->pc >= func_bounds[i].low && | |
1892 | fp->pc < func_bounds[i].high); | |
1893 | if (!found) | |
1894 | { | |
1895 | level = 1; | |
1896 | fp = find_relative_frame (fp, &level); | |
1897 | } | |
1898 | } | |
1899 | while (!found && level == 0); | |
1900 | ||
1901 | if (func_bounds) | |
b8c9b27d | 1902 | xfree (func_bounds); |
c906108c SS |
1903 | |
1904 | if (!found) | |
1905 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1906 | else if (fp != selected_frame) | |
1907 | select_and_print_frame (fp, level); | |
1908 | } | |
1909 | ||
1910 | /* Gets the language of the current frame. */ | |
1911 | ||
1912 | enum language | |
fba45db2 | 1913 | get_frame_language (void) |
c906108c SS |
1914 | { |
1915 | register struct symtab *s; | |
1916 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1917 | |
c906108c SS |
1918 | if (selected_frame) |
1919 | { | |
c5aa993b | 1920 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1921 | if (s) |
1922 | flang = s->language; | |
1923 | else | |
1924 | flang = language_unknown; | |
1925 | } | |
1926 | else | |
1927 | flang = language_unknown; | |
1928 | ||
1929 | return flang; | |
1930 | } | |
1931 | \f | |
1932 | void | |
fba45db2 | 1933 | _initialize_stack (void) |
c906108c | 1934 | { |
c5aa993b | 1935 | #if 0 |
c906108c SS |
1936 | backtrace_limit = 30; |
1937 | #endif | |
1938 | ||
1939 | add_com ("return", class_stack, return_command, | |
1940 | "Make selected stack frame return to its caller.\n\ | |
1941 | Control remains in the debugger, but when you continue\n\ | |
1942 | execution will resume in the frame above the one now selected.\n\ | |
1943 | If an argument is given, it is an expression for the value to return."); | |
1944 | ||
1945 | add_com ("up", class_stack, up_command, | |
1946 | "Select and print stack frame that called this one.\n\ | |
1947 | An argument says how many frames up to go."); | |
1948 | add_com ("up-silently", class_support, up_silently_command, | |
1949 | "Same as the `up' command, but does not print anything.\n\ | |
1950 | This is useful in command scripts."); | |
1951 | ||
1952 | add_com ("down", class_stack, down_command, | |
1953 | "Select and print stack frame called by this one.\n\ | |
1954 | An argument says how many frames down to go."); | |
1955 | add_com_alias ("do", "down", class_stack, 1); | |
1956 | add_com_alias ("dow", "down", class_stack, 1); | |
1957 | add_com ("down-silently", class_support, down_silently_command, | |
1958 | "Same as the `down' command, but does not print anything.\n\ | |
1959 | This is useful in command scripts."); | |
1960 | ||
1961 | add_com ("frame", class_stack, frame_command, | |
1962 | "Select and print a stack frame.\n\ | |
1963 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1964 | An argument specifies the frame to select.\n\ | |
1965 | It can be a stack frame number or the address of the frame.\n\ | |
1966 | With argument, nothing is printed if input is coming from\n\ | |
1967 | a command file or a user-defined command."); | |
1968 | ||
1969 | add_com_alias ("f", "frame", class_stack, 1); | |
1970 | ||
1971 | if (xdb_commands) | |
1972 | { | |
c5aa993b JM |
1973 | add_com ("L", class_stack, current_frame_command, |
1974 | "Print the current stack frame.\n"); | |
c906108c SS |
1975 | add_com_alias ("V", "frame", class_stack, 1); |
1976 | } | |
1977 | add_com ("select-frame", class_stack, select_frame_command, | |
1978 | "Select a stack frame without printing anything.\n\ | |
1979 | An argument specifies the frame to select.\n\ | |
1980 | It can be a stack frame number or the address of the frame.\n"); | |
1981 | ||
1982 | add_com ("backtrace", class_stack, backtrace_command, | |
1983 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1984 | With a negative argument, print outermost -COUNT frames.\n\ | |
1985 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1986 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1987 | if (xdb_commands) | |
1988 | { | |
1989 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1990 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1991 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1992 | and the values of the local variables.\n\ |
1993 | With a negative argument, print outermost -COUNT frames.\n\ | |
1994 | Usage: T <count>\n"); | |
1995 | } | |
1996 | ||
1997 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1998 | add_info ("stack", backtrace_command, | |
1999 | "Backtrace of the stack, or innermost COUNT frames."); | |
2000 | add_info_alias ("s", "stack", 1); | |
2001 | add_info ("frame", frame_info, | |
2002 | "All about selected stack frame, or frame at ADDR."); | |
2003 | add_info_alias ("f", "frame", 1); | |
2004 | add_info ("locals", locals_info, | |
2005 | "Local variables of current stack frame."); | |
2006 | add_info ("args", args_info, | |
2007 | "Argument variables of current stack frame."); | |
2008 | if (xdb_commands) | |
c5aa993b JM |
2009 | add_com ("l", class_info, args_plus_locals_info, |
2010 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2011 | |
2012 | if (dbx_commands) | |
c5aa993b JM |
2013 | add_com ("func", class_stack, func_command, |
2014 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2015 | |
2016 | add_info ("catch", catch_info, | |
2017 | "Exceptions that can be caught in the current stack frame."); | |
2018 | ||
2019 | #if 0 | |
c5aa993b JM |
2020 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2021 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2022 | &setlist); |
2023 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2024 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2025 | #endif |
2026 | } |