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? */ | |
111 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
112 | extern int lines_to_list; /* # of lines "list" command shows by default */ | |
113 | ||
114 | /* The "selected" stack frame is used by default for local and arg access. | |
115 | May be zero, for no selected frame. */ | |
116 | ||
117 | struct frame_info *selected_frame; | |
118 | ||
119 | /* Level of the selected frame: | |
120 | 0 for innermost, 1 for its caller, ... | |
121 | or -1 for frame specified by address with no defined level. */ | |
122 | ||
123 | int selected_frame_level; | |
124 | ||
125 | /* Zero means do things normally; we are interacting directly with the | |
126 | user. One means print the full filename and linenumber when a | |
127 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
128 | parse. Two means print similar annotations, but in many more | |
129 | cases and in a slightly different syntax. */ | |
130 | ||
131 | int annotation_level = 0; | |
c906108c | 132 | \f |
c5aa993b JM |
133 | |
134 | struct print_stack_frame_args | |
135 | { | |
136 | struct frame_info *fi; | |
137 | int level; | |
138 | int source; | |
139 | int args; | |
140 | }; | |
c906108c | 141 | |
a14ed312 | 142 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
143 | |
144 | /* Show and print the frame arguments. | |
145 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 146 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 147 | static int |
fba45db2 | 148 | show_and_print_stack_frame_stub (void *args) |
c906108c | 149 | { |
c5aa993b | 150 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 151 | |
c906108c SS |
152 | print_frame_info (p->fi, p->level, p->source, p->args); |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | /* Show or print the frame arguments. | |
158 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 159 | static int print_stack_frame_stub (void *args); |
c906108c | 160 | static int |
fba45db2 | 161 | print_stack_frame_stub (void *args) |
c906108c | 162 | { |
c5aa993b | 163 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 164 | |
37767e42 | 165 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
166 | return 0; |
167 | } | |
168 | ||
169 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
170 | and LEVEL should be its level in the stack (or -1 for level not | |
171 | defined). */ | |
172 | ||
173 | /* Pass the args the way catch_errors wants them. */ | |
174 | static int | |
fba45db2 | 175 | print_stack_frame_base_stub (char *args) |
c906108c | 176 | { |
c5aa993b | 177 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
178 | |
179 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
180 | return 0; | |
181 | } | |
182 | ||
183 | /* print the frame arguments to the terminal. | |
184 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 185 | static int print_only_stack_frame_stub (void *); |
c906108c | 186 | static int |
fba45db2 | 187 | print_only_stack_frame_stub (void *args) |
c906108c | 188 | { |
c5aa993b | 189 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
190 | |
191 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
192 | return 0; | |
193 | } | |
194 | ||
195 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
196 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
197 | This prints the level, the function executing, the arguments, | |
198 | and the file name and line number. | |
199 | If the pc is not at the beginning of the source line, | |
200 | the actual pc is printed at the beginning. | |
201 | ||
202 | If SOURCE is 1, print the source line as well. | |
203 | If SOURCE is -1, print ONLY the source line. */ | |
204 | ||
205 | static void | |
fba45db2 | 206 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
207 | { |
208 | struct print_stack_frame_args args; | |
209 | ||
210 | args.fi = fi; | |
211 | args.level = level; | |
212 | args.source = source; | |
213 | args.args = 1; | |
214 | ||
7a292a7a | 215 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
216 | } |
217 | ||
218 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
219 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
220 | This prints the level, the function executing, the arguments, | |
221 | and the file name and line number. | |
222 | If the pc is not at the beginning of the source line, | |
223 | the actual pc is printed at the beginning. | |
224 | ||
225 | If SOURCE is 1, print the source line as well. | |
226 | If SOURCE is -1, print ONLY the source line. */ | |
227 | ||
228 | void | |
fba45db2 | 229 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
230 | { |
231 | struct print_stack_frame_args args; | |
232 | ||
233 | args.fi = fi; | |
234 | args.level = level; | |
235 | args.source = source; | |
236 | args.args = 1; | |
237 | ||
7a292a7a | 238 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
239 | } |
240 | ||
241 | ||
242 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
243 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
244 | This prints the level, the function executing, the arguments, | |
245 | and the file name and line number. | |
246 | If the pc is not at the beginning of the source line, | |
247 | the actual pc is printed at the beginning. | |
248 | ||
249 | If SOURCE is 1, print the source line as well. | |
250 | If SOURCE is -1, print ONLY the source line. */ | |
251 | ||
252 | void | |
fba45db2 | 253 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
254 | { |
255 | struct print_stack_frame_args args; | |
256 | ||
257 | args.fi = fi; | |
258 | args.level = level; | |
259 | args.source = source; | |
260 | args.args = 1; | |
261 | ||
c5aa993b | 262 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
263 | } |
264 | ||
265 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
266 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
267 | This prints the level, the function executing, the arguments, | |
268 | and the file name and line number. | |
269 | If the pc is not at the beginning of the source line, | |
270 | the actual pc is printed at the beginning. | |
271 | ||
272 | If SOURCE is 1, print the source line as well. | |
273 | If SOURCE is -1, print ONLY the source line. */ | |
274 | ||
275 | void | |
fba45db2 | 276 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
277 | { |
278 | struct print_stack_frame_args args; | |
279 | ||
280 | args.fi = fi; | |
281 | args.level = level; | |
282 | args.source = source; | |
283 | args.args = 1; | |
284 | ||
7a292a7a | 285 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
286 | } |
287 | ||
c5aa993b JM |
288 | struct print_args_args |
289 | { | |
c906108c SS |
290 | struct symbol *func; |
291 | struct frame_info *fi; | |
d9fcf2fb | 292 | struct ui_file *stream; |
c906108c SS |
293 | }; |
294 | ||
a14ed312 | 295 | static int print_args_stub (PTR); |
c906108c SS |
296 | |
297 | /* Pass the args the way catch_errors wants them. */ | |
298 | ||
299 | static int | |
fba45db2 | 300 | print_args_stub (PTR args) |
c906108c SS |
301 | { |
302 | int numargs; | |
c5aa993b | 303 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 304 | |
392a587b | 305 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 306 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
307 | return 0; |
308 | } | |
309 | ||
310 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
311 | Used in "where" output, also used to emit breakpoint or step |
312 | messages. | |
313 | LEVEL is the level of the frame, or -1 if it is the | |
314 | innermost frame but we don't want to print the level. | |
315 | The meaning of the SOURCE argument is: | |
316 | SRC_LINE: Print only source line | |
317 | LOCATION: Print only location | |
318 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
319 | |
320 | static void | |
fba45db2 | 321 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
322 | { |
323 | struct symtab_and_line sal; | |
c5394b80 JM |
324 | int source_print; |
325 | int location_print; | |
c906108c SS |
326 | |
327 | #if 0 | |
328 | char buf[MAX_REGISTER_RAW_SIZE]; | |
329 | CORE_ADDR sp; | |
330 | ||
331 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
332 | ||
333 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
334 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
335 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
336 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
337 | ||
338 | /* This is not a perfect test, because if a function alloca's some | |
339 | memory, puts some code there, and then jumps into it, then the test | |
340 | will succeed even though there is no call dummy. Probably best is | |
341 | to check for a bp_call_dummy breakpoint. */ | |
342 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
343 | #else | |
344 | if (frame_in_dummy (fi)) | |
345 | #endif | |
346 | { | |
347 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
348 | ||
349 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 350 | to list for this frame. */ |
c906108c SS |
351 | if (level >= 0) |
352 | printf_filtered ("#%-2d ", level); | |
353 | annotate_function_call (); | |
354 | printf_filtered ("<function called from gdb>\n"); | |
355 | annotate_frame_end (); | |
356 | return; | |
357 | } | |
358 | if (fi->signal_handler_caller) | |
359 | { | |
360 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
361 | ||
362 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 363 | to list for this frame. */ |
c906108c SS |
364 | if (level >= 0) |
365 | printf_filtered ("#%-2d ", level); | |
366 | annotate_signal_handler_caller (); | |
367 | printf_filtered ("<signal handler called>\n"); | |
368 | annotate_frame_end (); | |
369 | return; | |
370 | } | |
371 | ||
372 | /* If fi is not the innermost frame, that normally means that fi->pc | |
373 | points to *after* the call instruction, and we want to get the line | |
374 | containing the call, never the next line. But if the next frame is | |
375 | a signal_handler_caller or a dummy frame, then the next frame was | |
376 | not entered as the result of a call, and we want to get the line | |
377 | containing fi->pc. */ | |
378 | sal = | |
379 | find_pc_line (fi->pc, | |
380 | fi->next != NULL | |
381 | && !fi->next->signal_handler_caller | |
382 | && !frame_in_dummy (fi->next)); | |
383 | ||
c5394b80 JM |
384 | location_print = (source == LOCATION |
385 | || source == LOC_AND_ADDRESS | |
386 | || source == SRC_AND_LOC); | |
387 | ||
388 | if (location_print || !sal.symtab) | |
389 | print_frame (fi, level, source, args, sal); | |
390 | ||
391 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
392 | ||
393 | if (source_print && sal.symtab) | |
394 | { | |
395 | int done = 0; | |
396 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
397 | ||
398 | if (annotation_level) | |
399 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
400 | fi->pc); | |
401 | if (!done) | |
402 | { | |
37767e42 | 403 | if (addressprint && mid_statement) |
c5394b80 | 404 | { |
8b93c638 JM |
405 | #ifdef UI_OUT |
406 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
407 | ui_out_text (uiout, "\t"); | |
408 | #else | |
c5394b80 JM |
409 | print_address_numeric (fi->pc, 1, gdb_stdout); |
410 | printf_filtered ("\t"); | |
8b93c638 | 411 | #endif |
c5394b80 JM |
412 | } |
413 | if (print_frame_info_listing_hook) | |
414 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
37767e42 | 415 | else |
c5394b80 JM |
416 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); |
417 | } | |
418 | current_source_line = max (sal.line - lines_to_list / 2, 1); | |
419 | } | |
420 | ||
421 | if (source != 0) | |
422 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
423 | ||
424 | annotate_frame_end (); | |
425 | ||
426 | gdb_flush (gdb_stdout); | |
427 | } | |
428 | ||
429 | static void | |
430 | print_frame (struct frame_info *fi, | |
431 | int level, | |
432 | int source, | |
433 | int args, | |
434 | struct symtab_and_line sal) | |
435 | { | |
436 | struct symbol *func; | |
437 | register char *funname = 0; | |
438 | enum language funlang = language_unknown; | |
8b93c638 JM |
439 | #ifdef UI_OUT |
440 | struct ui_stream *stb; | |
441 | struct cleanup *old_chain; | |
e6e0bfab | 442 | struct cleanup *list_chain; |
8b93c638 JM |
443 | |
444 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 445 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 446 | #endif /* UI_OUT */ |
c5394b80 | 447 | |
c906108c SS |
448 | func = find_pc_function (fi->pc); |
449 | if (func) | |
450 | { | |
451 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
452 | function (when we are in the first function in a file which |
453 | is compiled without debugging symbols, the previous function | |
454 | is compiled with debugging symbols, and the "foo.o" symbol | |
455 | that is supposed to tell us where the file with debugging symbols | |
456 | ends has been truncated by ar because it is longer than 15 | |
457 | characters). This also occurs if the user uses asm() to create | |
458 | a function but not stabs for it (in a file compiled -g). | |
459 | ||
460 | So look in the minimal symbol tables as well, and if it comes | |
461 | up with a larger address for the function use that instead. | |
462 | I don't think this can ever cause any problems; there shouldn't | |
463 | be any minimal symbols in the middle of a function; if this is | |
464 | ever changed many parts of GDB will need to be changed (and we'll | |
465 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
466 | |
467 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
468 | if (msymbol != NULL | |
c5aa993b | 469 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
470 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
471 | { | |
472 | #if 0 | |
473 | /* There is no particular reason to think the line number | |
474 | information is wrong. Someone might have just put in | |
475 | a label with asm() but left the line numbers alone. */ | |
476 | /* In this case we have no way of knowing the source file | |
477 | and line number, so don't print them. */ | |
478 | sal.symtab = 0; | |
479 | #endif | |
480 | /* We also don't know anything about the function besides | |
481 | its address and name. */ | |
482 | func = 0; | |
483 | funname = SYMBOL_NAME (msymbol); | |
484 | funlang = SYMBOL_LANGUAGE (msymbol); | |
485 | } | |
486 | else | |
487 | { | |
c5394b80 JM |
488 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
489 | demangled name that we already have stored in the symbol | |
490 | table, but we stored a version with DMGL_PARAMS turned | |
491 | on, and here we don't want to display parameters. So call | |
492 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
493 | that printf_symbol_filtered() will again try to demangle | |
494 | the name on the fly, but the issue is that if | |
495 | cplus_demangle() fails here, it'll fail there too. So we | |
496 | want to catch the failure ("demangled==NULL" case below) | |
497 | here, while we still have our hands on the function | |
498 | symbol.) */ | |
c5aa993b | 499 | char *demangled; |
c906108c SS |
500 | funname = SYMBOL_NAME (func); |
501 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
502 | if (funlang == language_cplus) |
503 | { | |
504 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
505 | if (demangled == NULL) | |
c5394b80 JM |
506 | /* If the demangler fails, try the demangled name from |
507 | the symbol table. This'll have parameters, but | |
508 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
509 | funname = SYMBOL_SOURCE_NAME (func); |
510 | } | |
c906108c SS |
511 | } |
512 | } | |
513 | else | |
514 | { | |
515 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
516 | if (msymbol != NULL) | |
517 | { | |
518 | funname = SYMBOL_NAME (msymbol); | |
519 | funlang = SYMBOL_LANGUAGE (msymbol); | |
520 | } | |
521 | } | |
522 | ||
c5394b80 JM |
523 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
524 | ||
8b93c638 | 525 | #ifdef UI_OUT |
666547aa | 526 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
8b93c638 | 527 | #endif |
c5394b80 JM |
528 | |
529 | if (level >= 0) | |
8b93c638 JM |
530 | { |
531 | #ifdef UI_OUT | |
532 | ui_out_text (uiout, "#"); | |
533 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
534 | ui_out_spaces (uiout, 1); | |
535 | #else | |
536 | printf_filtered ("#%-2d ", level); | |
537 | #endif | |
538 | } | |
c5394b80 JM |
539 | if (addressprint) |
540 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
541 | { | |
542 | annotate_frame_address (); | |
8b93c638 JM |
543 | #ifdef UI_OUT |
544 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
545 | annotate_frame_address_end (); | |
546 | ui_out_text (uiout, " in "); | |
547 | #else | |
c5394b80 JM |
548 | print_address_numeric (fi->pc, 1, gdb_stdout); |
549 | annotate_frame_address_end (); | |
550 | printf_filtered (" in "); | |
8b93c638 | 551 | #endif |
c5394b80 JM |
552 | } |
553 | annotate_frame_function_name (); | |
8b93c638 JM |
554 | #ifdef UI_OUT |
555 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, | |
556 | DMGL_ANSI); | |
557 | ui_out_field_stream (uiout, "func", stb); | |
558 | ui_out_wrap_hint (uiout, " "); | |
559 | #else | |
c5394b80 JM |
560 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, |
561 | DMGL_ANSI); | |
562 | wrap_here (" "); | |
8b93c638 | 563 | #endif |
c5394b80 JM |
564 | annotate_frame_args (); |
565 | ||
8b93c638 JM |
566 | #ifdef UI_OUT |
567 | ui_out_text (uiout, " ("); | |
568 | #else | |
c5394b80 | 569 | fputs_filtered (" (", gdb_stdout); |
8b93c638 | 570 | #endif |
c5394b80 | 571 | if (args) |
c906108c | 572 | { |
c5394b80 | 573 | struct print_args_args args; |
d493eb33 KB |
574 | #ifdef UI_OUT |
575 | struct cleanup *args_list_chain; | |
576 | #endif | |
c5394b80 JM |
577 | args.fi = fi; |
578 | args.func = func; | |
579 | args.stream = gdb_stdout; | |
8b93c638 | 580 | #ifdef UI_OUT |
68c81b54 | 581 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 582 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
583 | /* FIXME: args must be a list. If one argument is a string it will |
584 | have " that will not be properly escaped. */ | |
666547aa | 585 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 586 | do_cleanups (args_list_chain); |
8b93c638 JM |
587 | #else |
588 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); | |
589 | #endif | |
c5394b80 JM |
590 | QUIT; |
591 | } | |
8b93c638 JM |
592 | #ifdef UI_OUT |
593 | ui_out_text (uiout, ")"); | |
594 | #else | |
c5394b80 | 595 | printf_filtered (")"); |
8b93c638 | 596 | #endif |
c5394b80 JM |
597 | if (sal.symtab && sal.symtab->filename) |
598 | { | |
599 | annotate_frame_source_begin (); | |
8b93c638 JM |
600 | #ifdef UI_OUT |
601 | ui_out_wrap_hint (uiout, " "); | |
602 | ui_out_text (uiout, " at "); | |
603 | annotate_frame_source_file (); | |
604 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
605 | annotate_frame_source_file_end (); | |
606 | ui_out_text (uiout, ":"); | |
607 | annotate_frame_source_line (); | |
608 | ui_out_field_int (uiout, "line", sal.line); | |
609 | #else | |
c906108c | 610 | wrap_here (" "); |
c5394b80 JM |
611 | printf_filtered (" at "); |
612 | annotate_frame_source_file (); | |
613 | printf_filtered ("%s", sal.symtab->filename); | |
614 | annotate_frame_source_file_end (); | |
615 | printf_filtered (":"); | |
616 | annotate_frame_source_line (); | |
617 | printf_filtered ("%d", sal.line); | |
8b93c638 | 618 | #endif |
c5394b80 JM |
619 | annotate_frame_source_end (); |
620 | } | |
c906108c | 621 | |
c5394b80 JM |
622 | #ifdef PC_SOLIB |
623 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 624 | { |
c5394b80 JM |
625 | char *lib = PC_SOLIB (fi->pc); |
626 | if (lib) | |
c906108c | 627 | { |
c5394b80 | 628 | annotate_frame_where (); |
8b93c638 JM |
629 | #ifdef UI_OUT |
630 | ui_out_wrap_hint (uiout, " "); | |
631 | ui_out_text (uiout, " from "); | |
632 | ui_out_field_string (uiout, "from", lib); | |
633 | #else | |
c5394b80 JM |
634 | wrap_here (" "); |
635 | printf_filtered (" from %s", lib); | |
8b93c638 | 636 | #endif |
c906108c | 637 | } |
c906108c | 638 | } |
c5394b80 | 639 | #endif /* PC_SOLIB */ |
e514a9d6 | 640 | |
8b93c638 | 641 | #ifdef UI_OUT |
666547aa | 642 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 643 | do_cleanups (list_chain); |
8b93c638 JM |
644 | ui_out_text (uiout, "\n"); |
645 | do_cleanups (old_chain); | |
646 | #else | |
c5394b80 | 647 | printf_filtered ("\n"); |
8b93c638 | 648 | #endif |
c906108c SS |
649 | } |
650 | \f | |
651 | ||
c906108c SS |
652 | /* Show or print the frame info. If this is the tui, it will be shown in |
653 | the source display */ | |
654 | void | |
fba45db2 KB |
655 | print_frame_info (struct frame_info *fi, register int level, int source, |
656 | int args) | |
c906108c | 657 | { |
37767e42 | 658 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
659 | } |
660 | ||
661 | /* Show the frame info. If this is the tui, it will be shown in | |
662 | the source display otherwise, nothing is done */ | |
663 | void | |
fba45db2 | 664 | show_stack_frame (struct frame_info *fi) |
c906108c | 665 | { |
c906108c | 666 | } |
c906108c | 667 | \f |
c5aa993b | 668 | |
c906108c SS |
669 | /* Read a frame specification in whatever the appropriate format is. |
670 | Call error() if the specification is in any way invalid (i.e. | |
671 | this function never returns NULL). */ | |
672 | ||
673 | struct frame_info * | |
fba45db2 | 674 | parse_frame_specification (char *frame_exp) |
c906108c SS |
675 | { |
676 | int numargs = 0; | |
677 | #define MAXARGS 4 | |
678 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 679 | int level; |
c5aa993b | 680 | |
c906108c SS |
681 | if (frame_exp) |
682 | { | |
683 | char *addr_string, *p; | |
684 | struct cleanup *tmp_cleanup; | |
685 | ||
c5aa993b JM |
686 | while (*frame_exp == ' ') |
687 | frame_exp++; | |
c906108c SS |
688 | |
689 | while (*frame_exp) | |
690 | { | |
691 | if (numargs > MAXARGS) | |
692 | error ("Too many args in frame specification"); | |
693 | /* Parse an argument. */ | |
c5aa993b | 694 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 695 | ; |
c5aa993b | 696 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
697 | |
698 | { | |
ec9a3449 DT |
699 | value_ptr vp; |
700 | ||
b8c9b27d | 701 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 702 | |
24285e3a DT |
703 | /* NOTE: we call parse_and_eval and then both |
704 | value_as_long and value_as_pointer rather than calling | |
705 | parse_and_eval_long and parse_and_eval_address because | |
706 | of the issue of potential side effects from evaluating | |
707 | the expression. */ | |
ec9a3449 DT |
708 | vp = parse_and_eval (addr_string); |
709 | if (numargs == 0) | |
710 | level = value_as_long (vp); | |
711 | ||
712 | args[numargs++] = value_as_pointer (vp); | |
c906108c SS |
713 | do_cleanups (tmp_cleanup); |
714 | } | |
715 | ||
716 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
717 | while (*p == ' ') |
718 | p++; | |
c906108c SS |
719 | frame_exp = p; |
720 | } | |
721 | } | |
722 | ||
723 | switch (numargs) | |
724 | { | |
725 | case 0: | |
726 | if (selected_frame == NULL) | |
727 | error ("No selected frame."); | |
728 | return selected_frame; | |
729 | /* NOTREACHED */ | |
730 | case 1: | |
731 | { | |
c906108c | 732 | struct frame_info *fid = |
c5aa993b | 733 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
734 | struct frame_info *tfid; |
735 | ||
736 | if (level == 0) | |
737 | /* find_relative_frame was successful */ | |
738 | return fid; | |
739 | ||
740 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
741 | take at least 2 addresses. It is important to detect this case | |
742 | here so that "frame 100" does not give a confusing error message | |
743 | like "frame specification requires two addresses". This of course | |
744 | does not solve the "frame 100" problem for machines on which | |
745 | a frame specification can be made with one address. To solve | |
746 | that, we need a new syntax for a specifying a frame by address. | |
747 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
748 | two args, etc.), but people might think that is too much typing, | |
749 | so I guess *0x23,0x45 would be a possible alternative (commas | |
750 | really should be used instead of spaces to delimit; using spaces | |
751 | normally works in an expression). */ | |
752 | #ifdef SETUP_ARBITRARY_FRAME | |
753 | error ("No frame %d", args[0]); | |
754 | #endif | |
755 | ||
756 | /* If (s)he specifies the frame with an address, he deserves what | |
757 | (s)he gets. Still, give the highest one that matches. */ | |
758 | ||
759 | for (fid = get_current_frame (); | |
760 | fid && fid->frame != args[0]; | |
761 | fid = get_prev_frame (fid)) | |
762 | ; | |
763 | ||
764 | if (fid) | |
765 | while ((tfid = get_prev_frame (fid)) && | |
766 | (tfid->frame == args[0])) | |
767 | fid = tfid; | |
c5aa993b | 768 | |
c906108c SS |
769 | /* We couldn't identify the frame as an existing frame, but |
770 | perhaps we can create one with a single argument. */ | |
771 | } | |
772 | ||
c5aa993b | 773 | default: |
c906108c SS |
774 | #ifdef SETUP_ARBITRARY_FRAME |
775 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
776 | #else | |
777 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 778 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
779 | if (numargs == 1) |
780 | return create_new_frame (args[0], 0); | |
781 | error ("Too many args in frame specification"); | |
782 | #endif | |
783 | /* NOTREACHED */ | |
784 | } | |
785 | /* NOTREACHED */ | |
786 | } | |
787 | ||
788 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
789 | that if it is unsure about the answer, it returns 0 | |
790 | instead of guessing (this happens on the VAX and i960, for example). | |
791 | ||
792 | On most machines, we never have to guess about the args address, | |
793 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
794 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
795 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
796 | #endif | |
797 | ||
798 | /* Print verbosely the selected frame or the frame at address ADDR. | |
799 | This means absolutely all information in the frame is printed. */ | |
800 | ||
801 | static void | |
fba45db2 | 802 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
803 | { |
804 | struct frame_info *fi; | |
805 | struct symtab_and_line sal; | |
806 | struct symbol *func; | |
807 | struct symtab *s; | |
808 | struct frame_info *calling_frame_info; | |
809 | int i, count, numregs; | |
810 | char *funname = 0; | |
811 | enum language funlang = language_unknown; | |
812 | ||
813 | if (!target_has_stack) | |
814 | error ("No stack."); | |
815 | ||
816 | fi = parse_frame_specification (addr_exp); | |
817 | if (fi == NULL) | |
818 | error ("Invalid frame specified."); | |
819 | ||
820 | sal = find_pc_line (fi->pc, | |
821 | fi->next != NULL | |
822 | && !fi->next->signal_handler_caller | |
823 | && !frame_in_dummy (fi->next)); | |
824 | func = get_frame_function (fi); | |
c5aa993b | 825 | s = find_pc_symtab (fi->pc); |
c906108c SS |
826 | if (func) |
827 | { | |
828 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
829 | * the demangled name that we already have stored in | |
830 | * the symbol table, but we stored a version with | |
831 | * DMGL_PARAMS turned on, and here we don't want | |
832 | * to display parameters. So call the demangler again, | |
833 | * with DMGL_ANSI only. RT | |
834 | * (Yes, I know that printf_symbol_filtered() will | |
835 | * again try to demangle the name on the fly, but | |
836 | * the issue is that if cplus_demangle() fails here, | |
837 | * it'll fail there too. So we want to catch the failure | |
838 | * ("demangled==NULL" case below) here, while we still | |
839 | * have our hands on the function symbol.) | |
840 | */ | |
c5aa993b JM |
841 | char *demangled; |
842 | funname = SYMBOL_NAME (func); | |
843 | funlang = SYMBOL_LANGUAGE (func); | |
844 | if (funlang == language_cplus) | |
845 | { | |
846 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
847 | /* If the demangler fails, try the demangled name | |
848 | * from the symbol table. This'll have parameters, | |
849 | * but that's preferable to diplaying a mangled name. | |
850 | */ | |
851 | if (demangled == NULL) | |
852 | funname = SYMBOL_SOURCE_NAME (func); | |
853 | } | |
c906108c SS |
854 | } |
855 | else | |
856 | { | |
857 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
858 | if (msymbol != NULL) | |
859 | { | |
860 | funname = SYMBOL_NAME (msymbol); | |
861 | funlang = SYMBOL_LANGUAGE (msymbol); | |
862 | } | |
863 | } | |
864 | calling_frame_info = get_prev_frame (fi); | |
865 | ||
866 | if (!addr_exp && selected_frame_level >= 0) | |
867 | { | |
868 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
869 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
870 | printf_filtered (":\n"); | |
871 | } | |
872 | else | |
873 | { | |
874 | printf_filtered ("Stack frame at "); | |
875 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
876 | printf_filtered (":\n"); | |
877 | } | |
878 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
879 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
880 | ||
881 | wrap_here (" "); | |
882 | if (funname) | |
883 | { | |
884 | printf_filtered (" in "); | |
885 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
886 | DMGL_ANSI | DMGL_PARAMS); | |
887 | } | |
888 | wrap_here (" "); | |
889 | if (sal.symtab) | |
890 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
891 | puts_filtered ("; "); | |
892 | wrap_here (" "); | |
893 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
894 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
895 | printf_filtered ("\n"); | |
896 | ||
897 | { | |
392a587b JM |
898 | int frameless; |
899 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
900 | if (frameless) |
901 | printf_filtered (" (FRAMELESS),"); | |
902 | } | |
903 | ||
904 | if (calling_frame_info) | |
905 | { | |
906 | printf_filtered (" called by frame at "); | |
907 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
908 | } | |
909 | if (fi->next && calling_frame_info) | |
910 | puts_filtered (","); | |
911 | wrap_here (" "); | |
912 | if (fi->next) | |
913 | { | |
914 | printf_filtered (" caller of frame at "); | |
915 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
916 | } | |
917 | if (fi->next || calling_frame_info) | |
918 | puts_filtered ("\n"); | |
919 | if (s) | |
920 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
921 | ||
922 | #ifdef PRINT_EXTRA_FRAME_INFO | |
923 | PRINT_EXTRA_FRAME_INFO (fi); | |
924 | #endif | |
925 | ||
926 | { | |
927 | /* Address of the argument list for this frame, or 0. */ | |
928 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
929 | /* Number of args for this frame, or -1 if unknown. */ | |
930 | int numargs; | |
931 | ||
932 | if (arg_list == 0) | |
933 | printf_filtered (" Arglist at unknown address.\n"); | |
934 | else | |
935 | { | |
936 | printf_filtered (" Arglist at "); | |
937 | print_address_numeric (arg_list, 1, gdb_stdout); | |
938 | printf_filtered (","); | |
939 | ||
392a587b | 940 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
941 | if (numargs < 0) |
942 | puts_filtered (" args: "); | |
943 | else if (numargs == 0) | |
944 | puts_filtered (" no args."); | |
945 | else if (numargs == 1) | |
946 | puts_filtered (" 1 arg: "); | |
947 | else | |
948 | printf_filtered (" %d args: ", numargs); | |
949 | print_frame_args (func, fi, numargs, gdb_stdout); | |
950 | puts_filtered ("\n"); | |
951 | } | |
952 | } | |
953 | { | |
954 | /* Address of the local variables for this frame, or 0. */ | |
955 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
956 | ||
957 | if (arg_list == 0) | |
958 | printf_filtered (" Locals at unknown address,"); | |
959 | else | |
960 | { | |
961 | printf_filtered (" Locals at "); | |
962 | print_address_numeric (arg_list, 1, gdb_stdout); | |
963 | printf_filtered (","); | |
964 | } | |
965 | } | |
966 | ||
967 | FRAME_INIT_SAVED_REGS (fi); | |
968 | if (fi->saved_regs != NULL) | |
969 | { | |
970 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 971 | actually the value of the previous frame's sp. */ |
c906108c SS |
972 | printf_filtered (" Previous frame's sp is "); |
973 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
974 | printf_filtered ("\n"); | |
975 | count = 0; | |
64485362 | 976 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
977 | for (i = 0; i < numregs; i++) |
978 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
979 | { | |
980 | if (count == 0) | |
981 | puts_filtered (" Saved registers:\n "); | |
982 | else | |
983 | puts_filtered (","); | |
984 | wrap_here (" "); | |
985 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
986 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
987 | count++; | |
988 | } | |
989 | if (count) | |
990 | puts_filtered ("\n"); | |
991 | } | |
992 | else | |
993 | { | |
994 | /* We could get some information about saved registers by | |
c5aa993b JM |
995 | calling get_saved_register on each register. Which info goes |
996 | with which frame is necessarily lost, however, and I suspect | |
997 | that the users don't care whether they get the info. */ | |
c906108c SS |
998 | puts_filtered ("\n"); |
999 | } | |
1000 | } | |
1001 | ||
1002 | #if 0 | |
1003 | /* Set a limit on the number of frames printed by default in a | |
1004 | backtrace. */ | |
1005 | ||
1006 | static int backtrace_limit; | |
1007 | ||
1008 | static void | |
fba45db2 | 1009 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1010 | { |
bb518678 | 1011 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1012 | |
1013 | if (count < 0) | |
1014 | error ("Negative argument not meaningful as backtrace limit."); | |
1015 | ||
1016 | backtrace_limit = count; | |
1017 | } | |
1018 | ||
1019 | static void | |
fba45db2 | 1020 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1021 | { |
1022 | if (arg) | |
1023 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1024 | ||
1025 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1026 | } | |
1027 | #endif | |
1028 | ||
1029 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1030 | ||
a14ed312 KB |
1031 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1032 | int from_tty); | |
c906108c | 1033 | static void |
fba45db2 | 1034 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1035 | { |
1036 | struct frame_info *fi; | |
1037 | register int count; | |
1038 | register int i; | |
1039 | register struct frame_info *trailing; | |
1040 | register int trailing_level; | |
1041 | ||
1042 | if (!target_has_stack) | |
1043 | error ("No stack."); | |
1044 | ||
1045 | /* The following code must do two things. First, it must | |
1046 | set the variable TRAILING to the frame from which we should start | |
1047 | printing. Second, it must set the variable count to the number | |
1048 | of frames which we should print, or -1 if all of them. */ | |
1049 | trailing = get_current_frame (); | |
d082b2bb AC |
1050 | |
1051 | /* The target can be in a state where there is no valid frames | |
1052 | (e.g., just connected). */ | |
1053 | if (trailing == NULL) | |
1054 | error ("No stack."); | |
1055 | ||
c906108c SS |
1056 | trailing_level = 0; |
1057 | if (count_exp) | |
1058 | { | |
bb518678 | 1059 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1060 | if (count < 0) |
1061 | { | |
1062 | struct frame_info *current; | |
1063 | ||
1064 | count = -count; | |
1065 | ||
1066 | current = trailing; | |
1067 | while (current && count--) | |
1068 | { | |
1069 | QUIT; | |
1070 | current = get_prev_frame (current); | |
1071 | } | |
c5aa993b | 1072 | |
c906108c SS |
1073 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1074 | will be COUNT below it. */ | |
1075 | while (current) | |
1076 | { | |
1077 | QUIT; | |
1078 | trailing = get_prev_frame (trailing); | |
1079 | current = get_prev_frame (current); | |
1080 | trailing_level++; | |
1081 | } | |
c5aa993b | 1082 | |
c906108c SS |
1083 | count = -1; |
1084 | } | |
1085 | } | |
1086 | else | |
1087 | count = -1; | |
1088 | ||
1089 | if (info_verbose) | |
1090 | { | |
1091 | struct partial_symtab *ps; | |
c5aa993b | 1092 | |
c906108c | 1093 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1094 | a separate pass so that "Reading in symbols for xxx" messages |
1095 | don't screw up the appearance of the backtrace. Also | |
1096 | if people have strong opinions against reading symbols for | |
1097 | backtrace this may have to be an option. */ | |
c906108c SS |
1098 | i = count; |
1099 | for (fi = trailing; | |
1100 | fi != NULL && i--; | |
1101 | fi = get_prev_frame (fi)) | |
1102 | { | |
1103 | QUIT; | |
1104 | ps = find_pc_psymtab (fi->pc); | |
1105 | if (ps) | |
1106 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | for (i = 0, fi = trailing; | |
1111 | fi && count--; | |
1112 | i++, fi = get_prev_frame (fi)) | |
1113 | { | |
1114 | QUIT; | |
1115 | ||
1116 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1117 | means further attempts to backtrace would fail (on the other |
1118 | hand, perhaps the code does or could be fixed to make sure | |
1119 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1120 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1121 | if (show_locals) | |
c5aa993b | 1122 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1123 | } |
1124 | ||
1125 | /* If we've stopped before the end, mention that. */ | |
1126 | if (fi && from_tty) | |
1127 | printf_filtered ("(More stack frames follow...)\n"); | |
1128 | } | |
1129 | ||
1130 | static void | |
fba45db2 | 1131 | backtrace_command (char *arg, int from_tty) |
c906108c | 1132 | { |
c5aa993b JM |
1133 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1134 | char **argv = (char **) NULL; | |
1135 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1136 | char *argPtr = arg; | |
c906108c | 1137 | |
c5aa993b | 1138 | if (arg != (char *) NULL) |
c906108c SS |
1139 | { |
1140 | int i; | |
1141 | ||
c5aa993b | 1142 | argv = buildargv (arg); |
7a292a7a | 1143 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1144 | argc = 0; |
c5aa993b JM |
1145 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1146 | { | |
745b8ca0 | 1147 | unsigned int j; |
c5aa993b JM |
1148 | |
1149 | for (j = 0; (j < strlen (argv[i])); j++) | |
1150 | argv[i][j] = tolower (argv[i][j]); | |
1151 | ||
1152 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1153 | argIndicatingFullTrace = argc; | |
1154 | else | |
1155 | { | |
1156 | argc++; | |
1157 | totArgLen += strlen (argv[i]); | |
1158 | } | |
1159 | } | |
c906108c SS |
1160 | totArgLen += argc; |
1161 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1162 | { |
1163 | if (totArgLen > 0) | |
1164 | { | |
1165 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1166 | if (!argPtr) | |
1167 | nomem (0); | |
1168 | else | |
1169 | { | |
1170 | memset (argPtr, 0, totArgLen + 1); | |
1171 | for (i = 0; (i < (argc + 1)); i++) | |
1172 | { | |
1173 | if (i != argIndicatingFullTrace) | |
1174 | { | |
1175 | strcat (argPtr, argv[i]); | |
1176 | strcat (argPtr, " "); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | } | |
1181 | else | |
1182 | argPtr = (char *) NULL; | |
1183 | } | |
c906108c SS |
1184 | } |
1185 | ||
1186 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1187 | ||
1188 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1189 | xfree (argPtr); |
c906108c SS |
1190 | |
1191 | if (old_chain) | |
c5aa993b | 1192 | do_cleanups (old_chain); |
c906108c SS |
1193 | } |
1194 | ||
a14ed312 | 1195 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1196 | static void |
fba45db2 | 1197 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1198 | { |
1199 | backtrace_command_1 (arg, 1, from_tty); | |
1200 | } | |
c906108c | 1201 | \f |
c5aa993b | 1202 | |
c906108c SS |
1203 | /* Print the local variables of a block B active in FRAME. |
1204 | Return 1 if any variables were printed; 0 otherwise. */ | |
1205 | ||
1206 | static int | |
fba45db2 KB |
1207 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1208 | int num_tabs, register struct ui_file *stream) | |
c906108c SS |
1209 | { |
1210 | int nsyms; | |
1211 | register int i, j; | |
1212 | register struct symbol *sym; | |
1213 | register int values_printed = 0; | |
1214 | ||
1215 | nsyms = BLOCK_NSYMS (b); | |
1216 | ||
1217 | for (i = 0; i < nsyms; i++) | |
1218 | { | |
1219 | sym = BLOCK_SYM (b, i); | |
1220 | switch (SYMBOL_CLASS (sym)) | |
1221 | { | |
1222 | case LOC_LOCAL: | |
1223 | case LOC_REGISTER: | |
1224 | case LOC_STATIC: | |
1225 | case LOC_BASEREG: | |
1226 | values_printed = 1; | |
1227 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1228 | fputs_filtered ("\t", stream); |
c906108c SS |
1229 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1230 | fputs_filtered (" = ", stream); | |
1231 | print_variable_value (sym, fi, stream); | |
1232 | fprintf_filtered (stream, "\n"); | |
1233 | break; | |
1234 | ||
1235 | default: | |
1236 | /* Ignore symbols which are not locals. */ | |
1237 | break; | |
1238 | } | |
1239 | } | |
1240 | return values_printed; | |
1241 | } | |
1242 | ||
1243 | /* Same, but print labels. */ | |
1244 | ||
1245 | static int | |
fba45db2 KB |
1246 | print_block_frame_labels (struct block *b, int *have_default, |
1247 | register struct ui_file *stream) | |
c906108c SS |
1248 | { |
1249 | int nsyms; | |
1250 | register int i; | |
1251 | register struct symbol *sym; | |
1252 | register int values_printed = 0; | |
1253 | ||
1254 | nsyms = BLOCK_NSYMS (b); | |
1255 | ||
1256 | for (i = 0; i < nsyms; i++) | |
1257 | { | |
1258 | sym = BLOCK_SYM (b, i); | |
1259 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
1260 | { | |
1261 | if (*have_default) | |
1262 | continue; | |
1263 | *have_default = 1; | |
1264 | } | |
1265 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1266 | { | |
1267 | struct symtab_and_line sal; | |
1268 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1269 | values_printed = 1; | |
1270 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1271 | if (addressprint) | |
1272 | { | |
1273 | fprintf_filtered (stream, " "); | |
1274 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1275 | } | |
1276 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1277 | sal.symtab->filename, sal.line); | |
1278 | } | |
1279 | } | |
1280 | return values_printed; | |
1281 | } | |
1282 | ||
1283 | /* Print on STREAM all the local variables in frame FRAME, | |
1284 | including all the blocks active in that frame | |
1285 | at its current pc. | |
1286 | ||
1287 | Returns 1 if the job was done, | |
1288 | or 0 if nothing was printed because we have no info | |
1289 | on the function running in FRAME. */ | |
1290 | ||
1291 | static void | |
fba45db2 KB |
1292 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1293 | register struct ui_file *stream) | |
c906108c SS |
1294 | { |
1295 | register struct block *block = get_frame_block (fi); | |
1296 | register int values_printed = 0; | |
1297 | ||
1298 | if (block == 0) | |
1299 | { | |
1300 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1301 | return; | |
1302 | } | |
c5aa993b | 1303 | |
c906108c SS |
1304 | while (block != 0) |
1305 | { | |
1306 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1307 | values_printed = 1; | |
1308 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1309 | Don't continue to its superblock, the block of |
1310 | per-file symbols. */ | |
c906108c SS |
1311 | if (BLOCK_FUNCTION (block)) |
1312 | break; | |
1313 | block = BLOCK_SUPERBLOCK (block); | |
1314 | } | |
1315 | ||
1316 | if (!values_printed) | |
1317 | { | |
1318 | fprintf_filtered (stream, "No locals.\n"); | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | /* Same, but print labels. */ | |
1323 | ||
1324 | static void | |
fba45db2 KB |
1325 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1326 | register struct ui_file *stream) | |
c906108c SS |
1327 | { |
1328 | register struct blockvector *bl; | |
1329 | register struct block *block = get_frame_block (fi); | |
1330 | register int values_printed = 0; | |
1331 | int index, have_default = 0; | |
1332 | char *blocks_printed; | |
1333 | CORE_ADDR pc = fi->pc; | |
1334 | ||
1335 | if (block == 0) | |
1336 | { | |
1337 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1338 | return; | |
1339 | } | |
1340 | ||
1341 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1342 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1343 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1344 | ||
1345 | while (block != 0) | |
1346 | { | |
1347 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1348 | int last_index; | |
1349 | ||
1350 | if (bl != blockvector_for_pc (end, &index)) | |
1351 | error ("blockvector blotch"); | |
1352 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1353 | error ("blockvector botch"); | |
1354 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1355 | index += 1; | |
1356 | ||
1357 | /* Don't print out blocks that have gone by. */ | |
1358 | while (index < last_index | |
1359 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1360 | index++; | |
1361 | ||
1362 | while (index < last_index | |
1363 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1364 | { | |
1365 | if (blocks_printed[index] == 0) | |
1366 | { | |
1367 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1368 | values_printed = 1; | |
1369 | blocks_printed[index] = 1; | |
1370 | } | |
1371 | index++; | |
1372 | } | |
1373 | if (have_default) | |
1374 | return; | |
1375 | if (values_printed && this_level_only) | |
1376 | return; | |
1377 | ||
1378 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1379 | Don't continue to its superblock, the block of |
1380 | per-file symbols. */ | |
c906108c SS |
1381 | if (BLOCK_FUNCTION (block)) |
1382 | break; | |
1383 | block = BLOCK_SUPERBLOCK (block); | |
1384 | } | |
1385 | ||
1386 | if (!values_printed && !this_level_only) | |
1387 | { | |
1388 | fprintf_filtered (stream, "No catches.\n"); | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | /* ARGSUSED */ | |
1393 | void | |
fba45db2 | 1394 | locals_info (char *args, int from_tty) |
c906108c SS |
1395 | { |
1396 | if (!selected_frame) | |
1397 | error ("No frame selected."); | |
1398 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1399 | } | |
1400 | ||
1401 | static void | |
fba45db2 | 1402 | catch_info (char *ignore, int from_tty) |
c906108c | 1403 | { |
c5aa993b | 1404 | struct symtab_and_line *sal; |
c906108c | 1405 | |
c5aa993b | 1406 | /* Check for target support for exception handling */ |
c906108c SS |
1407 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1408 | if (sal) | |
1409 | { | |
1410 | /* Currently not handling this */ | |
1411 | /* Ideally, here we should interact with the C++ runtime | |
1412 | system to find the list of active handlers, etc. */ | |
1413 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1414 | #if 0 | |
c5aa993b JM |
1415 | if (!selected_frame) |
1416 | error ("No frame selected."); | |
c906108c SS |
1417 | #endif |
1418 | } | |
1419 | else | |
1420 | { | |
c5aa993b | 1421 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1422 | if (!selected_frame) |
c5aa993b JM |
1423 | error ("No frame selected."); |
1424 | ||
c906108c SS |
1425 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1426 | } | |
1427 | } | |
1428 | ||
1429 | static void | |
fba45db2 KB |
1430 | print_frame_arg_vars (register struct frame_info *fi, |
1431 | register struct ui_file *stream) | |
c906108c SS |
1432 | { |
1433 | struct symbol *func = get_frame_function (fi); | |
1434 | register struct block *b; | |
1435 | int nsyms; | |
1436 | register int i; | |
1437 | register struct symbol *sym, *sym2; | |
1438 | register int values_printed = 0; | |
1439 | ||
1440 | if (func == 0) | |
1441 | { | |
1442 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | b = SYMBOL_BLOCK_VALUE (func); | |
1447 | nsyms = BLOCK_NSYMS (b); | |
1448 | ||
1449 | for (i = 0; i < nsyms; i++) | |
1450 | { | |
1451 | sym = BLOCK_SYM (b, i); | |
1452 | switch (SYMBOL_CLASS (sym)) | |
1453 | { | |
1454 | case LOC_ARG: | |
1455 | case LOC_LOCAL_ARG: | |
1456 | case LOC_REF_ARG: | |
1457 | case LOC_REGPARM: | |
1458 | case LOC_REGPARM_ADDR: | |
1459 | case LOC_BASEREG_ARG: | |
1460 | values_printed = 1; | |
1461 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1462 | fputs_filtered (" = ", stream); | |
1463 | ||
1464 | /* We have to look up the symbol because arguments can have | |
1465 | two entries (one a parameter, one a local) and the one we | |
1466 | want is the local, which lookup_symbol will find for us. | |
1467 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1468 | small structure and gcc2 when the argument type is float | |
1469 | and it is passed as a double and converted to float by | |
1470 | the prologue (in the latter case the type of the LOC_ARG | |
1471 | symbol is double and the type of the LOC_LOCAL symbol is | |
1472 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1473 | are not combined in symbol-reading. */ | |
1474 | ||
1475 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1476 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1477 | print_variable_value (sym2, fi, stream); |
1478 | fprintf_filtered (stream, "\n"); | |
1479 | break; | |
1480 | ||
1481 | default: | |
1482 | /* Don't worry about things which aren't arguments. */ | |
1483 | break; | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | if (!values_printed) | |
1488 | { | |
1489 | fprintf_filtered (stream, "No arguments.\n"); | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | void | |
fba45db2 | 1494 | args_info (char *ignore, int from_tty) |
c906108c SS |
1495 | { |
1496 | if (!selected_frame) | |
1497 | error ("No frame selected."); | |
1498 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1499 | } | |
1500 | ||
1501 | ||
1502 | static void | |
fba45db2 | 1503 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1504 | { |
c5aa993b JM |
1505 | args_info (ignore, from_tty); |
1506 | locals_info (ignore, from_tty); | |
c906108c | 1507 | } |
c906108c | 1508 | \f |
c5aa993b | 1509 | |
c906108c SS |
1510 | /* Select frame FI, and note that its stack level is LEVEL. |
1511 | LEVEL may be -1 if an actual level number is not known. */ | |
1512 | ||
1513 | void | |
fba45db2 | 1514 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1515 | { |
1516 | register struct symtab *s; | |
1517 | ||
1518 | selected_frame = fi; | |
1519 | selected_frame_level = level; | |
1520 | if (selected_frame_level_changed_hook) | |
1521 | selected_frame_level_changed_hook (level); | |
1522 | ||
1523 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1524 | source language of this frame, and switch to it if desired. */ | |
1525 | if (fi) | |
c5aa993b JM |
1526 | { |
1527 | s = find_pc_symtab (fi->pc); | |
1528 | if (s | |
1529 | && s->language != current_language->la_language | |
1530 | && s->language != language_unknown | |
1531 | && language_mode == language_mode_auto) | |
1532 | { | |
1533 | set_language (s->language); | |
1534 | } | |
c906108c | 1535 | } |
c906108c | 1536 | } |
c906108c | 1537 | \f |
c5aa993b | 1538 | |
c906108c SS |
1539 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1540 | the stack frame and show the source if this is the tui version. */ | |
1541 | void | |
fba45db2 | 1542 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1543 | { |
c5aa993b | 1544 | select_frame (fi, level); |
c906108c SS |
1545 | if (fi) |
1546 | { | |
c5aa993b | 1547 | print_stack_frame (fi, level, 1); |
c906108c SS |
1548 | } |
1549 | } | |
c906108c | 1550 | \f |
c5aa993b | 1551 | |
c906108c SS |
1552 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1553 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1554 | ||
1555 | void | |
fba45db2 | 1556 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1557 | { |
1558 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1559 | *levelp = selected_frame_level; | |
1560 | } | |
1561 | ||
1562 | /* Return the symbol-block in which the selected frame is executing. | |
1563 | Can return zero under various legitimate circumstances. */ | |
1564 | ||
1565 | struct block * | |
fba45db2 | 1566 | get_selected_block (void) |
c906108c SS |
1567 | { |
1568 | if (!target_has_stack) | |
1569 | return 0; | |
1570 | ||
1571 | if (!selected_frame) | |
1572 | return get_current_block (); | |
1573 | return get_frame_block (selected_frame); | |
1574 | } | |
1575 | ||
1576 | /* Find a frame a certain number of levels away from FRAME. | |
1577 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1578 | Positive means go to earlier frames (up); negative, the reverse. | |
1579 | The int that contains the number of levels is counted toward | |
1580 | zero as the frames for those levels are found. | |
1581 | If the top or bottom frame is reached, that frame is returned, | |
1582 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1583 | how much farther the original request asked to go. */ | |
1584 | ||
1585 | struct frame_info * | |
fba45db2 KB |
1586 | find_relative_frame (register struct frame_info *frame, |
1587 | register int *level_offset_ptr) | |
c906108c SS |
1588 | { |
1589 | register struct frame_info *prev; | |
1590 | register struct frame_info *frame1; | |
1591 | ||
1592 | /* Going up is simple: just do get_prev_frame enough times | |
1593 | or until initial frame is reached. */ | |
1594 | while (*level_offset_ptr > 0) | |
1595 | { | |
1596 | prev = get_prev_frame (frame); | |
1597 | if (prev == 0) | |
1598 | break; | |
1599 | (*level_offset_ptr)--; | |
1600 | frame = prev; | |
1601 | } | |
1602 | /* Going down is just as simple. */ | |
1603 | if (*level_offset_ptr < 0) | |
1604 | { | |
c5aa993b JM |
1605 | while (*level_offset_ptr < 0) |
1606 | { | |
1607 | frame1 = get_next_frame (frame); | |
1608 | if (!frame1) | |
1609 | break; | |
1610 | frame = frame1; | |
1611 | (*level_offset_ptr)++; | |
1612 | } | |
c906108c SS |
1613 | } |
1614 | return frame; | |
1615 | } | |
1616 | ||
1617 | /* The "select_frame" command. With no arg, NOP. | |
1618 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1619 | valid level. Otherwise, treat level_exp as an address expression | |
1620 | and select it. See parse_frame_specification for more info on proper | |
1621 | frame expressions. */ | |
1622 | ||
1623 | /* ARGSUSED */ | |
8b93c638 JM |
1624 | #ifdef UI_OUT |
1625 | void | |
fba45db2 | 1626 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1627 | { |
1628 | select_frame_command (level_exp, from_tty); | |
1629 | } | |
1630 | #endif | |
c906108c | 1631 | static void |
fba45db2 | 1632 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1633 | { |
1634 | register struct frame_info *frame, *frame1; | |
1635 | unsigned int level = 0; | |
1636 | ||
1637 | if (!target_has_stack) | |
1638 | error ("No stack."); | |
1639 | ||
1640 | frame = parse_frame_specification (level_exp); | |
1641 | ||
1642 | /* Try to figure out what level this frame is. But if there is | |
1643 | no current stack, don't error out -- let the user set one. */ | |
1644 | frame1 = 0; | |
c5aa993b JM |
1645 | if (get_current_frame ()) |
1646 | { | |
1647 | for (frame1 = get_prev_frame (0); | |
1648 | frame1 && frame1 != frame; | |
1649 | frame1 = get_prev_frame (frame1)) | |
1650 | level++; | |
1651 | } | |
c906108c SS |
1652 | |
1653 | if (!frame1) | |
1654 | level = 0; | |
1655 | ||
1656 | select_frame (frame, level); | |
1657 | } | |
1658 | ||
1659 | /* The "frame" command. With no arg, print selected frame briefly. | |
1660 | With arg, behaves like select_frame and then prints the selected | |
1661 | frame. */ | |
1662 | ||
1663 | void | |
fba45db2 | 1664 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1665 | { |
1666 | select_frame_command (level_exp, from_tty); | |
1667 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1668 | } | |
1669 | ||
1670 | /* The XDB Compatibility command to print the current frame. */ | |
1671 | ||
7a292a7a | 1672 | static void |
fba45db2 | 1673 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1674 | { |
1675 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1676 | error ("No stack."); |
7a292a7a SS |
1677 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1678 | } | |
c906108c SS |
1679 | |
1680 | /* Select the frame up one or COUNT stack levels | |
1681 | from the previously selected frame, and print it briefly. */ | |
1682 | ||
1683 | /* ARGSUSED */ | |
1684 | static void | |
fba45db2 | 1685 | up_silently_base (char *count_exp) |
c906108c SS |
1686 | { |
1687 | register struct frame_info *fi; | |
1688 | int count = 1, count1; | |
1689 | if (count_exp) | |
bb518678 | 1690 | count = parse_and_eval_long (count_exp); |
c906108c | 1691 | count1 = count; |
c5aa993b | 1692 | |
c906108c SS |
1693 | if (target_has_stack == 0 || selected_frame == 0) |
1694 | error ("No stack."); | |
1695 | ||
1696 | fi = find_relative_frame (selected_frame, &count1); | |
1697 | if (count1 != 0 && count_exp == 0) | |
1698 | error ("Initial frame selected; you cannot go up."); | |
1699 | select_frame (fi, selected_frame_level + count - count1); | |
1700 | } | |
1701 | ||
1702 | static void | |
fba45db2 | 1703 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1704 | { |
c5aa993b | 1705 | up_silently_base (count_exp); |
c906108c SS |
1706 | } |
1707 | ||
1708 | static void | |
fba45db2 | 1709 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1710 | { |
1711 | up_silently_base (count_exp); | |
1712 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1713 | } | |
1714 | ||
1715 | /* Select the frame down one or COUNT stack levels | |
1716 | from the previously selected frame, and print it briefly. */ | |
1717 | ||
1718 | /* ARGSUSED */ | |
1719 | static void | |
fba45db2 | 1720 | down_silently_base (char *count_exp) |
c906108c SS |
1721 | { |
1722 | register struct frame_info *frame; | |
1723 | int count = -1, count1; | |
1724 | if (count_exp) | |
bb518678 | 1725 | count = -parse_and_eval_long (count_exp); |
c906108c | 1726 | count1 = count; |
c5aa993b | 1727 | |
c906108c SS |
1728 | if (target_has_stack == 0 || selected_frame == 0) |
1729 | error ("No stack."); | |
1730 | ||
1731 | frame = find_relative_frame (selected_frame, &count1); | |
1732 | if (count1 != 0 && count_exp == 0) | |
1733 | { | |
1734 | ||
1735 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1736 | means to really go down (and let me know if that is |
1737 | impossible), but "down 9999" can be used to mean go all the way | |
1738 | down without getting an error. */ | |
c906108c SS |
1739 | |
1740 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1741 | } | |
1742 | ||
1743 | select_frame (frame, selected_frame_level + count - count1); | |
1744 | } | |
1745 | ||
1746 | /* ARGSUSED */ | |
1747 | static void | |
fba45db2 | 1748 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1749 | { |
1750 | down_silently_base (count_exp); | |
c906108c SS |
1751 | } |
1752 | ||
1753 | static void | |
fba45db2 | 1754 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1755 | { |
1756 | down_silently_base (count_exp); | |
1757 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1758 | } | |
1759 | \f | |
8b93c638 JM |
1760 | #ifdef UI_OUT |
1761 | void | |
fba45db2 | 1762 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1763 | { |
1764 | return_command (retval_exp, from_tty); | |
1765 | } | |
1766 | #endif | |
c906108c | 1767 | static void |
fba45db2 | 1768 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1769 | { |
1770 | struct symbol *thisfun; | |
1771 | CORE_ADDR selected_frame_addr; | |
1772 | CORE_ADDR selected_frame_pc; | |
1773 | struct frame_info *frame; | |
1774 | value_ptr return_value = NULL; | |
1775 | ||
1776 | if (selected_frame == NULL) | |
1777 | error ("No selected frame."); | |
1778 | thisfun = get_frame_function (selected_frame); | |
1779 | selected_frame_addr = FRAME_FP (selected_frame); | |
1780 | selected_frame_pc = selected_frame->pc; | |
1781 | ||
1782 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1783 | ||
1784 | if (retval_exp) | |
1785 | { | |
1786 | struct type *return_type = NULL; | |
1787 | ||
1788 | return_value = parse_and_eval (retval_exp); | |
1789 | ||
1790 | /* Cast return value to the return type of the function. */ | |
1791 | if (thisfun != NULL) | |
1792 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1793 | if (return_type == NULL) | |
1794 | return_type = builtin_type_int; | |
1795 | return_value = value_cast (return_type, return_value); | |
1796 | ||
1797 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1798 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1799 | if (VALUE_LAZY (return_value)) |
1800 | value_fetch_lazy (return_value); | |
1801 | } | |
1802 | ||
1803 | /* If interactive, require confirmation. */ | |
1804 | ||
1805 | if (from_tty) | |
1806 | { | |
1807 | if (thisfun != 0) | |
1808 | { | |
1809 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1810 | { | |
1811 | error ("Not confirmed."); | |
1812 | /* NOTREACHED */ | |
1813 | } | |
1814 | } | |
c5aa993b JM |
1815 | else if (!query ("Make selected stack frame return now? ")) |
1816 | error ("Not confirmed."); | |
c906108c SS |
1817 | } |
1818 | ||
1819 | /* Do the real work. Pop until the specified frame is current. We | |
1820 | use this method because the selected_frame is not valid after | |
1821 | a POP_FRAME. The pc comparison makes this work even if the | |
1822 | selected frame shares its fp with another frame. */ | |
1823 | ||
c5aa993b | 1824 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1825 | || selected_frame_pc != frame->pc) |
1826 | POP_FRAME; | |
1827 | ||
1828 | /* Then pop that frame. */ | |
1829 | ||
1830 | POP_FRAME; | |
1831 | ||
1832 | /* Compute the return value (if any) and store in the place | |
1833 | for return values. */ | |
1834 | ||
1835 | if (retval_exp) | |
1836 | set_return_value (return_value); | |
1837 | ||
1a2aab69 PS |
1838 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1839 | ||
1840 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1841 | FRAME_FP (get_current_frame ()))) | |
1842 | POP_FRAME; | |
1843 | ||
c906108c SS |
1844 | /* If interactive, print the frame that is now current. */ |
1845 | ||
1846 | if (from_tty) | |
1847 | frame_command ("0", 1); | |
1848 | else | |
1849 | select_frame_command ("0", 0); | |
1850 | } | |
1851 | ||
1852 | /* Sets the scope to input function name, provided that the | |
1853 | function is within the current stack frame */ | |
1854 | ||
1855 | struct function_bounds | |
1856 | { | |
1857 | CORE_ADDR low, high; | |
1858 | }; | |
1859 | ||
a14ed312 | 1860 | static void func_command (char *arg, int from_tty); |
c906108c | 1861 | static void |
fba45db2 | 1862 | func_command (char *arg, int from_tty) |
c906108c SS |
1863 | { |
1864 | struct frame_info *fp; | |
1865 | int found = 0; | |
1866 | struct symtabs_and_lines sals; | |
1867 | int i; | |
1868 | int level = 1; | |
1869 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1870 | ||
1871 | if (arg != (char *) NULL) | |
1872 | return; | |
1873 | ||
1874 | fp = parse_frame_specification ("0"); | |
1875 | sals = decode_line_spec (arg, 1); | |
1876 | func_bounds = (struct function_bounds *) xmalloc ( | |
1877 | sizeof (struct function_bounds) * sals.nelts); | |
1878 | for (i = 0; (i < sals.nelts && !found); i++) | |
1879 | { | |
1880 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1881 | find_pc_partial_function (sals.sals[i].pc, | |
1882 | (char **) NULL, | |
1883 | &func_bounds[i].low, | |
1884 | &func_bounds[i].high) == 0) | |
1885 | { | |
1886 | func_bounds[i].low = | |
1887 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | do | |
1892 | { | |
1893 | for (i = 0; (i < sals.nelts && !found); i++) | |
1894 | found = (fp->pc >= func_bounds[i].low && | |
1895 | fp->pc < func_bounds[i].high); | |
1896 | if (!found) | |
1897 | { | |
1898 | level = 1; | |
1899 | fp = find_relative_frame (fp, &level); | |
1900 | } | |
1901 | } | |
1902 | while (!found && level == 0); | |
1903 | ||
1904 | if (func_bounds) | |
b8c9b27d | 1905 | xfree (func_bounds); |
c906108c SS |
1906 | |
1907 | if (!found) | |
1908 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1909 | else if (fp != selected_frame) | |
1910 | select_and_print_frame (fp, level); | |
1911 | } | |
1912 | ||
1913 | /* Gets the language of the current frame. */ | |
1914 | ||
1915 | enum language | |
fba45db2 | 1916 | get_frame_language (void) |
c906108c SS |
1917 | { |
1918 | register struct symtab *s; | |
1919 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1920 | |
c906108c SS |
1921 | if (selected_frame) |
1922 | { | |
c5aa993b | 1923 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1924 | if (s) |
1925 | flang = s->language; | |
1926 | else | |
1927 | flang = language_unknown; | |
1928 | } | |
1929 | else | |
1930 | flang = language_unknown; | |
1931 | ||
1932 | return flang; | |
1933 | } | |
1934 | \f | |
1935 | void | |
fba45db2 | 1936 | _initialize_stack (void) |
c906108c | 1937 | { |
c5aa993b | 1938 | #if 0 |
c906108c SS |
1939 | backtrace_limit = 30; |
1940 | #endif | |
1941 | ||
1942 | add_com ("return", class_stack, return_command, | |
1943 | "Make selected stack frame return to its caller.\n\ | |
1944 | Control remains in the debugger, but when you continue\n\ | |
1945 | execution will resume in the frame above the one now selected.\n\ | |
1946 | If an argument is given, it is an expression for the value to return."); | |
1947 | ||
1948 | add_com ("up", class_stack, up_command, | |
1949 | "Select and print stack frame that called this one.\n\ | |
1950 | An argument says how many frames up to go."); | |
1951 | add_com ("up-silently", class_support, up_silently_command, | |
1952 | "Same as the `up' command, but does not print anything.\n\ | |
1953 | This is useful in command scripts."); | |
1954 | ||
1955 | add_com ("down", class_stack, down_command, | |
1956 | "Select and print stack frame called by this one.\n\ | |
1957 | An argument says how many frames down to go."); | |
1958 | add_com_alias ("do", "down", class_stack, 1); | |
1959 | add_com_alias ("dow", "down", class_stack, 1); | |
1960 | add_com ("down-silently", class_support, down_silently_command, | |
1961 | "Same as the `down' command, but does not print anything.\n\ | |
1962 | This is useful in command scripts."); | |
1963 | ||
1964 | add_com ("frame", class_stack, frame_command, | |
1965 | "Select and print a stack frame.\n\ | |
1966 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1967 | An argument specifies the frame to select.\n\ | |
1968 | It can be a stack frame number or the address of the frame.\n\ | |
1969 | With argument, nothing is printed if input is coming from\n\ | |
1970 | a command file or a user-defined command."); | |
1971 | ||
1972 | add_com_alias ("f", "frame", class_stack, 1); | |
1973 | ||
1974 | if (xdb_commands) | |
1975 | { | |
c5aa993b JM |
1976 | add_com ("L", class_stack, current_frame_command, |
1977 | "Print the current stack frame.\n"); | |
c906108c SS |
1978 | add_com_alias ("V", "frame", class_stack, 1); |
1979 | } | |
1980 | add_com ("select-frame", class_stack, select_frame_command, | |
1981 | "Select a stack frame without printing anything.\n\ | |
1982 | An argument specifies the frame to select.\n\ | |
1983 | It can be a stack frame number or the address of the frame.\n"); | |
1984 | ||
1985 | add_com ("backtrace", class_stack, backtrace_command, | |
1986 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1987 | With a negative argument, print outermost -COUNT frames.\n\ | |
1988 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1989 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1990 | if (xdb_commands) | |
1991 | { | |
1992 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1993 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1994 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1995 | and the values of the local variables.\n\ |
1996 | With a negative argument, print outermost -COUNT frames.\n\ | |
1997 | Usage: T <count>\n"); | |
1998 | } | |
1999 | ||
2000 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2001 | add_info ("stack", backtrace_command, | |
2002 | "Backtrace of the stack, or innermost COUNT frames."); | |
2003 | add_info_alias ("s", "stack", 1); | |
2004 | add_info ("frame", frame_info, | |
2005 | "All about selected stack frame, or frame at ADDR."); | |
2006 | add_info_alias ("f", "frame", 1); | |
2007 | add_info ("locals", locals_info, | |
2008 | "Local variables of current stack frame."); | |
2009 | add_info ("args", args_info, | |
2010 | "Argument variables of current stack frame."); | |
2011 | if (xdb_commands) | |
c5aa993b JM |
2012 | add_com ("l", class_info, args_plus_locals_info, |
2013 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2014 | |
2015 | if (dbx_commands) | |
c5aa993b JM |
2016 | add_com ("func", class_stack, func_command, |
2017 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2018 | |
2019 | add_info ("catch", catch_info, | |
2020 | "Exceptions that can be caught in the current stack frame."); | |
2021 | ||
2022 | #if 0 | |
c5aa993b JM |
2023 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2024 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2025 | &setlist); |
2026 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2027 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2028 | #endif |
2029 | } |