Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
e6e0bfab MK |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, |
3 | 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" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
8b93c638 JM |
40 | #ifdef UI_OUT |
41 | #include "ui-out.h" | |
42 | #endif | |
c906108c SS |
43 | |
44 | /* Prototypes for exported functions. */ | |
45 | ||
a14ed312 | 46 | void args_info (char *, int); |
c906108c | 47 | |
a14ed312 | 48 | void locals_info (char *, int); |
c906108c | 49 | |
507f3c78 | 50 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 51 | |
a14ed312 | 52 | void _initialize_stack (void); |
c906108c SS |
53 | |
54 | /* Prototypes for local functions. */ | |
55 | ||
a14ed312 | 56 | static void return_command (char *, int); |
c906108c | 57 | |
a14ed312 | 58 | static void down_command (char *, int); |
c906108c | 59 | |
a14ed312 | 60 | static void down_silently_base (char *); |
c906108c | 61 | |
a14ed312 | 62 | static void down_silently_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void up_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void up_silently_base (char *); |
c906108c | 67 | |
a14ed312 | 68 | static void up_silently_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | void frame_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void current_frame_command (char *, int); |
7a292a7a | 73 | |
a14ed312 | 74 | static void select_frame_command (char *, int); |
c906108c | 75 | |
d9fcf2fb | 76 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 77 | |
a14ed312 | 78 | static void catch_info (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void args_plus_locals_info (char *, int); |
c906108c | 81 | |
d9fcf2fb JM |
82 | static void print_frame_label_vars (struct frame_info *, int, |
83 | struct ui_file *); | |
c906108c | 84 | |
d9fcf2fb JM |
85 | static void print_frame_local_vars (struct frame_info *, int, |
86 | struct ui_file *); | |
c906108c | 87 | |
d9fcf2fb JM |
88 | static int print_block_frame_labels (struct block *, int *, |
89 | struct ui_file *); | |
c906108c | 90 | |
d9fcf2fb JM |
91 | static int print_block_frame_locals (struct block *, |
92 | struct frame_info *, | |
93 | int, | |
94 | struct ui_file *); | |
c906108c | 95 | |
c5394b80 JM |
96 | static void print_frame (struct frame_info *fi, |
97 | int level, | |
98 | int source, | |
99 | int args, | |
100 | struct symtab_and_line sal); | |
101 | ||
a14ed312 | 102 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 103 | |
a14ed312 | 104 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void backtrace_command (char *, int); |
c906108c | 107 | |
a14ed312 | 108 | struct frame_info *parse_frame_specification (char *); |
c906108c | 109 | |
a14ed312 | 110 | static void frame_info (char *, int); |
c906108c SS |
111 | |
112 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
113 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
114 | extern int lines_to_list; /* # of lines "list" command shows by default */ | |
115 | ||
116 | /* The "selected" stack frame is used by default for local and arg access. | |
117 | May be zero, for no selected frame. */ | |
118 | ||
119 | struct frame_info *selected_frame; | |
120 | ||
121 | /* Level of the selected frame: | |
122 | 0 for innermost, 1 for its caller, ... | |
123 | or -1 for frame specified by address with no defined level. */ | |
124 | ||
125 | int selected_frame_level; | |
126 | ||
127 | /* Zero means do things normally; we are interacting directly with the | |
128 | user. One means print the full filename and linenumber when a | |
129 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
130 | parse. Two means print similar annotations, but in many more | |
131 | cases and in a slightly different syntax. */ | |
132 | ||
133 | int annotation_level = 0; | |
c906108c | 134 | \f |
c5aa993b JM |
135 | |
136 | struct print_stack_frame_args | |
137 | { | |
138 | struct frame_info *fi; | |
139 | int level; | |
140 | int source; | |
141 | int args; | |
142 | }; | |
c906108c | 143 | |
a14ed312 | 144 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
145 | |
146 | /* Show and print the frame arguments. | |
147 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 148 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 149 | static int |
fba45db2 | 150 | show_and_print_stack_frame_stub (void *args) |
c906108c | 151 | { |
c5aa993b | 152 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
153 | |
154 | /* Reversed order of these so tuiDo() doesn't occur | |
155 | * in the middle of "Breakpoint 1 ... [location]" printing = RT | |
156 | */ | |
157 | if (tui_version) | |
158 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
159 | print_frame_info (p->fi, p->level, p->source, p->args); | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | /* Show or print the frame arguments. | |
165 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 166 | static int print_stack_frame_stub (void *args); |
c906108c | 167 | static int |
fba45db2 | 168 | print_stack_frame_stub (void *args) |
c906108c | 169 | { |
c5aa993b | 170 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
171 | |
172 | if (tui_version) | |
173 | print_frame_info (p->fi, p->level, p->source, p->args); | |
174 | else | |
175 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
180 | and LEVEL should be its level in the stack (or -1 for level not | |
181 | defined). */ | |
182 | ||
183 | /* Pass the args the way catch_errors wants them. */ | |
184 | static int | |
fba45db2 | 185 | print_stack_frame_base_stub (char *args) |
c906108c | 186 | { |
c5aa993b | 187 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
188 | |
189 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | /* print the frame arguments to the terminal. | |
194 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 195 | static int print_only_stack_frame_stub (void *); |
c906108c | 196 | static int |
fba45db2 | 197 | print_only_stack_frame_stub (void *args) |
c906108c | 198 | { |
c5aa993b | 199 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
200 | |
201 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
206 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
207 | This prints the level, the function executing, the arguments, | |
208 | and the file name and line number. | |
209 | If the pc is not at the beginning of the source line, | |
210 | the actual pc is printed at the beginning. | |
211 | ||
212 | If SOURCE is 1, print the source line as well. | |
213 | If SOURCE is -1, print ONLY the source line. */ | |
214 | ||
215 | static void | |
fba45db2 | 216 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
217 | { |
218 | struct print_stack_frame_args args; | |
219 | ||
220 | args.fi = fi; | |
221 | args.level = level; | |
222 | args.source = source; | |
223 | args.args = 1; | |
224 | ||
7a292a7a | 225 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
226 | } |
227 | ||
228 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
229 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
230 | This prints the level, the function executing, the arguments, | |
231 | and the file name and line number. | |
232 | If the pc is not at the beginning of the source line, | |
233 | the actual pc is printed at the beginning. | |
234 | ||
235 | If SOURCE is 1, print the source line as well. | |
236 | If SOURCE is -1, print ONLY the source line. */ | |
237 | ||
238 | void | |
fba45db2 | 239 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
240 | { |
241 | struct print_stack_frame_args args; | |
242 | ||
243 | args.fi = fi; | |
244 | args.level = level; | |
245 | args.source = source; | |
246 | args.args = 1; | |
247 | ||
7a292a7a | 248 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
249 | } |
250 | ||
251 | ||
252 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
253 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
254 | This prints the level, the function executing, the arguments, | |
255 | and the file name and line number. | |
256 | If the pc is not at the beginning of the source line, | |
257 | the actual pc is printed at the beginning. | |
258 | ||
259 | If SOURCE is 1, print the source line as well. | |
260 | If SOURCE is -1, print ONLY the source line. */ | |
261 | ||
262 | void | |
fba45db2 | 263 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
264 | { |
265 | struct print_stack_frame_args args; | |
266 | ||
267 | args.fi = fi; | |
268 | args.level = level; | |
269 | args.source = source; | |
270 | args.args = 1; | |
271 | ||
c5aa993b | 272 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
273 | } |
274 | ||
275 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
276 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
277 | This prints the level, the function executing, the arguments, | |
278 | and the file name and line number. | |
279 | If the pc is not at the beginning of the source line, | |
280 | the actual pc is printed at the beginning. | |
281 | ||
282 | If SOURCE is 1, print the source line as well. | |
283 | If SOURCE is -1, print ONLY the source line. */ | |
284 | ||
285 | void | |
fba45db2 | 286 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
287 | { |
288 | struct print_stack_frame_args args; | |
289 | ||
290 | args.fi = fi; | |
291 | args.level = level; | |
292 | args.source = source; | |
293 | args.args = 1; | |
294 | ||
7a292a7a | 295 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
296 | } |
297 | ||
c5aa993b JM |
298 | struct print_args_args |
299 | { | |
c906108c SS |
300 | struct symbol *func; |
301 | struct frame_info *fi; | |
d9fcf2fb | 302 | struct ui_file *stream; |
c906108c SS |
303 | }; |
304 | ||
a14ed312 | 305 | static int print_args_stub (PTR); |
c906108c SS |
306 | |
307 | /* Pass the args the way catch_errors wants them. */ | |
308 | ||
309 | static int | |
fba45db2 | 310 | print_args_stub (PTR args) |
c906108c SS |
311 | { |
312 | int numargs; | |
c5aa993b | 313 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 314 | |
392a587b | 315 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 316 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
317 | return 0; |
318 | } | |
319 | ||
320 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
321 | Used in "where" output, also used to emit breakpoint or step |
322 | messages. | |
323 | LEVEL is the level of the frame, or -1 if it is the | |
324 | innermost frame but we don't want to print the level. | |
325 | The meaning of the SOURCE argument is: | |
326 | SRC_LINE: Print only source line | |
327 | LOCATION: Print only location | |
328 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
329 | |
330 | static void | |
fba45db2 | 331 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
332 | { |
333 | struct symtab_and_line sal; | |
c5394b80 JM |
334 | int source_print; |
335 | int location_print; | |
c906108c SS |
336 | |
337 | #if 0 | |
338 | char buf[MAX_REGISTER_RAW_SIZE]; | |
339 | CORE_ADDR sp; | |
340 | ||
341 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
342 | ||
343 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
344 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
345 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
346 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
347 | ||
348 | /* This is not a perfect test, because if a function alloca's some | |
349 | memory, puts some code there, and then jumps into it, then the test | |
350 | will succeed even though there is no call dummy. Probably best is | |
351 | to check for a bp_call_dummy breakpoint. */ | |
352 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
353 | #else | |
354 | if (frame_in_dummy (fi)) | |
355 | #endif | |
356 | { | |
357 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
358 | ||
359 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 360 | to list for this frame. */ |
c906108c SS |
361 | if (level >= 0) |
362 | printf_filtered ("#%-2d ", level); | |
363 | annotate_function_call (); | |
364 | printf_filtered ("<function called from gdb>\n"); | |
365 | annotate_frame_end (); | |
366 | return; | |
367 | } | |
368 | if (fi->signal_handler_caller) | |
369 | { | |
370 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
371 | ||
372 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 373 | to list for this frame. */ |
c906108c SS |
374 | if (level >= 0) |
375 | printf_filtered ("#%-2d ", level); | |
376 | annotate_signal_handler_caller (); | |
377 | printf_filtered ("<signal handler called>\n"); | |
378 | annotate_frame_end (); | |
379 | return; | |
380 | } | |
381 | ||
382 | /* If fi is not the innermost frame, that normally means that fi->pc | |
383 | points to *after* the call instruction, and we want to get the line | |
384 | containing the call, never the next line. But if the next frame is | |
385 | a signal_handler_caller or a dummy frame, then the next frame was | |
386 | not entered as the result of a call, and we want to get the line | |
387 | containing fi->pc. */ | |
388 | sal = | |
389 | find_pc_line (fi->pc, | |
390 | fi->next != NULL | |
391 | && !fi->next->signal_handler_caller | |
392 | && !frame_in_dummy (fi->next)); | |
393 | ||
c5394b80 JM |
394 | location_print = (source == LOCATION |
395 | || source == LOC_AND_ADDRESS | |
396 | || source == SRC_AND_LOC); | |
397 | ||
398 | if (location_print || !sal.symtab) | |
399 | print_frame (fi, level, source, args, sal); | |
400 | ||
401 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
402 | ||
403 | if (source_print && sal.symtab) | |
404 | { | |
405 | int done = 0; | |
406 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
407 | ||
408 | if (annotation_level) | |
409 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
410 | fi->pc); | |
411 | if (!done) | |
412 | { | |
413 | if (addressprint && mid_statement && !tui_version) | |
414 | { | |
8b93c638 JM |
415 | #ifdef UI_OUT |
416 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
417 | ui_out_text (uiout, "\t"); | |
418 | #else | |
c5394b80 JM |
419 | print_address_numeric (fi->pc, 1, gdb_stdout); |
420 | printf_filtered ("\t"); | |
8b93c638 | 421 | #endif |
c5394b80 JM |
422 | } |
423 | if (print_frame_info_listing_hook) | |
424 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
425 | else if (!tui_version) | |
426 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
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 JM |
535 | #ifdef UI_OUT |
536 | ui_out_list_begin (uiout, "frame"); | |
e6e0bfab | 537 | list_chain = make_cleanup_ui_out_list_end (uiout); |
8b93c638 | 538 | #endif |
c5394b80 JM |
539 | |
540 | if (level >= 0) | |
8b93c638 JM |
541 | { |
542 | #ifdef UI_OUT | |
543 | ui_out_text (uiout, "#"); | |
544 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
545 | ui_out_spaces (uiout, 1); | |
546 | #else | |
547 | printf_filtered ("#%-2d ", level); | |
548 | #endif | |
549 | } | |
c5394b80 JM |
550 | if (addressprint) |
551 | if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS) | |
552 | { | |
553 | annotate_frame_address (); | |
8b93c638 JM |
554 | #ifdef UI_OUT |
555 | ui_out_field_core_addr (uiout, "addr", fi->pc); | |
556 | annotate_frame_address_end (); | |
557 | ui_out_text (uiout, " in "); | |
558 | #else | |
c5394b80 JM |
559 | print_address_numeric (fi->pc, 1, gdb_stdout); |
560 | annotate_frame_address_end (); | |
561 | printf_filtered (" in "); | |
8b93c638 | 562 | #endif |
c5394b80 JM |
563 | } |
564 | annotate_frame_function_name (); | |
8b93c638 JM |
565 | #ifdef UI_OUT |
566 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, | |
567 | DMGL_ANSI); | |
568 | ui_out_field_stream (uiout, "func", stb); | |
569 | ui_out_wrap_hint (uiout, " "); | |
570 | #else | |
c5394b80 JM |
571 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, |
572 | DMGL_ANSI); | |
573 | wrap_here (" "); | |
8b93c638 | 574 | #endif |
c5394b80 JM |
575 | annotate_frame_args (); |
576 | ||
8b93c638 JM |
577 | #ifdef UI_OUT |
578 | ui_out_text (uiout, " ("); | |
579 | #else | |
c5394b80 | 580 | fputs_filtered (" (", gdb_stdout); |
8b93c638 | 581 | #endif |
c5394b80 | 582 | if (args) |
c906108c | 583 | { |
c5394b80 JM |
584 | struct print_args_args args; |
585 | args.fi = fi; | |
586 | args.func = func; | |
587 | args.stream = gdb_stdout; | |
8b93c638 JM |
588 | #ifdef UI_OUT |
589 | ui_out_list_begin (uiout, "args"); | |
c5394b80 | 590 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
591 | /* FIXME: args must be a list. If one argument is a string it will |
592 | have " that will not be properly escaped. */ | |
593 | ui_out_list_end (uiout); | |
594 | #else | |
595 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); | |
596 | #endif | |
c5394b80 JM |
597 | QUIT; |
598 | } | |
8b93c638 JM |
599 | #ifdef UI_OUT |
600 | ui_out_text (uiout, ")"); | |
601 | #else | |
c5394b80 | 602 | printf_filtered (")"); |
8b93c638 | 603 | #endif |
c5394b80 JM |
604 | if (sal.symtab && sal.symtab->filename) |
605 | { | |
606 | annotate_frame_source_begin (); | |
8b93c638 JM |
607 | #ifdef UI_OUT |
608 | ui_out_wrap_hint (uiout, " "); | |
609 | ui_out_text (uiout, " at "); | |
610 | annotate_frame_source_file (); | |
611 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
612 | annotate_frame_source_file_end (); | |
613 | ui_out_text (uiout, ":"); | |
614 | annotate_frame_source_line (); | |
615 | ui_out_field_int (uiout, "line", sal.line); | |
616 | #else | |
c906108c | 617 | wrap_here (" "); |
c5394b80 JM |
618 | printf_filtered (" at "); |
619 | annotate_frame_source_file (); | |
620 | printf_filtered ("%s", sal.symtab->filename); | |
621 | annotate_frame_source_file_end (); | |
622 | printf_filtered (":"); | |
623 | annotate_frame_source_line (); | |
624 | printf_filtered ("%d", sal.line); | |
8b93c638 | 625 | #endif |
c5394b80 JM |
626 | annotate_frame_source_end (); |
627 | } | |
c906108c SS |
628 | |
629 | #ifdef PC_LOAD_SEGMENT | |
c5394b80 | 630 | /* If we couldn't print out function name but if can figure out what |
c5aa993b JM |
631 | load segment this pc value is from, at least print out some info |
632 | about its load segment. */ | |
c5394b80 JM |
633 | if (!funname) |
634 | { | |
635 | annotate_frame_where (); | |
8b93c638 JM |
636 | #ifdef UI_OUT |
637 | ui_out_wrap_hint (uiout, " "); | |
638 | ui_out_text (uiout, " from "); | |
639 | ui_out_field_string (uiout, "from", PC_LOAD_SEGMENT (fi->pc)); | |
640 | #else | |
c5394b80 JM |
641 | wrap_here (" "); |
642 | printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc)); | |
8b93c638 | 643 | #endif |
c906108c | 644 | } |
c5394b80 | 645 | #endif /* PC_LOAD_SEGMENT */ |
c906108c | 646 | |
c5394b80 JM |
647 | #ifdef PC_SOLIB |
648 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 649 | { |
c5394b80 JM |
650 | char *lib = PC_SOLIB (fi->pc); |
651 | if (lib) | |
c906108c | 652 | { |
c5394b80 | 653 | annotate_frame_where (); |
8b93c638 JM |
654 | #ifdef UI_OUT |
655 | ui_out_wrap_hint (uiout, " "); | |
656 | ui_out_text (uiout, " from "); | |
657 | ui_out_field_string (uiout, "from", lib); | |
658 | #else | |
c5394b80 JM |
659 | wrap_here (" "); |
660 | printf_filtered (" from %s", lib); | |
8b93c638 | 661 | #endif |
c906108c | 662 | } |
c906108c | 663 | } |
c5394b80 | 664 | #endif /* PC_SOLIB */ |
e514a9d6 | 665 | |
8b93c638 | 666 | #ifdef UI_OUT |
e6e0bfab MK |
667 | /* do_cleanups will call ui_out_list_end() for us. */ |
668 | do_cleanups (list_chain); | |
8b93c638 JM |
669 | ui_out_text (uiout, "\n"); |
670 | do_cleanups (old_chain); | |
671 | #else | |
c5394b80 | 672 | printf_filtered ("\n"); |
8b93c638 | 673 | #endif |
c906108c SS |
674 | } |
675 | \f | |
676 | ||
7a292a7a | 677 | #if 0 |
c906108c | 678 | void |
fba45db2 | 679 | stack_publish_stopped_with_no_frame (void) |
c906108c | 680 | { |
c5aa993b | 681 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateOnEnd)); |
c906108c SS |
682 | |
683 | return; | |
684 | } | |
7a292a7a | 685 | #endif |
c906108c SS |
686 | |
687 | /* Show or print the frame info. If this is the tui, it will be shown in | |
688 | the source display */ | |
689 | void | |
fba45db2 KB |
690 | print_frame_info (struct frame_info *fi, register int level, int source, |
691 | int args) | |
c906108c SS |
692 | { |
693 | if (!tui_version) | |
c5aa993b | 694 | print_frame_info_base (fi, level, source, args); |
c906108c | 695 | else |
c5aa993b JM |
696 | { |
697 | if (fi && (frame_in_dummy (fi) || fi->signal_handler_caller)) | |
698 | print_frame_info_base (fi, level, source, args); | |
699 | else | |
700 | { | |
701 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); | |
702 | } | |
703 | } | |
c906108c SS |
704 | } |
705 | ||
706 | /* Show the frame info. If this is the tui, it will be shown in | |
707 | the source display otherwise, nothing is done */ | |
708 | void | |
fba45db2 | 709 | show_stack_frame (struct frame_info *fi) |
c906108c | 710 | { |
c5aa993b | 711 | TUIDO (((TuiOpaqueFuncPtr) tui_vShowFrameInfo, fi)); |
c906108c | 712 | } |
c906108c | 713 | \f |
c5aa993b | 714 | |
c906108c SS |
715 | /* Read a frame specification in whatever the appropriate format is. |
716 | Call error() if the specification is in any way invalid (i.e. | |
717 | this function never returns NULL). */ | |
718 | ||
719 | struct frame_info * | |
fba45db2 | 720 | parse_frame_specification (char *frame_exp) |
c906108c SS |
721 | { |
722 | int numargs = 0; | |
723 | #define MAXARGS 4 | |
724 | CORE_ADDR args[MAXARGS]; | |
c5aa993b | 725 | |
c906108c SS |
726 | if (frame_exp) |
727 | { | |
728 | char *addr_string, *p; | |
729 | struct cleanup *tmp_cleanup; | |
730 | ||
c5aa993b JM |
731 | while (*frame_exp == ' ') |
732 | frame_exp++; | |
c906108c SS |
733 | |
734 | while (*frame_exp) | |
735 | { | |
736 | if (numargs > MAXARGS) | |
737 | error ("Too many args in frame specification"); | |
738 | /* Parse an argument. */ | |
c5aa993b | 739 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 740 | ; |
c5aa993b | 741 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
742 | |
743 | { | |
b8c9b27d | 744 | tmp_cleanup = make_cleanup (xfree, addr_string); |
c906108c SS |
745 | args[numargs++] = parse_and_eval_address (addr_string); |
746 | do_cleanups (tmp_cleanup); | |
747 | } | |
748 | ||
749 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
750 | while (*p == ' ') |
751 | p++; | |
c906108c SS |
752 | frame_exp = p; |
753 | } | |
754 | } | |
755 | ||
756 | switch (numargs) | |
757 | { | |
758 | case 0: | |
759 | if (selected_frame == NULL) | |
760 | error ("No selected frame."); | |
761 | return selected_frame; | |
762 | /* NOTREACHED */ | |
763 | case 1: | |
764 | { | |
765 | int level = args[0]; | |
766 | struct frame_info *fid = | |
c5aa993b | 767 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
768 | struct frame_info *tfid; |
769 | ||
770 | if (level == 0) | |
771 | /* find_relative_frame was successful */ | |
772 | return fid; | |
773 | ||
774 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
775 | take at least 2 addresses. It is important to detect this case | |
776 | here so that "frame 100" does not give a confusing error message | |
777 | like "frame specification requires two addresses". This of course | |
778 | does not solve the "frame 100" problem for machines on which | |
779 | a frame specification can be made with one address. To solve | |
780 | that, we need a new syntax for a specifying a frame by address. | |
781 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
782 | two args, etc.), but people might think that is too much typing, | |
783 | so I guess *0x23,0x45 would be a possible alternative (commas | |
784 | really should be used instead of spaces to delimit; using spaces | |
785 | normally works in an expression). */ | |
786 | #ifdef SETUP_ARBITRARY_FRAME | |
787 | error ("No frame %d", args[0]); | |
788 | #endif | |
789 | ||
790 | /* If (s)he specifies the frame with an address, he deserves what | |
791 | (s)he gets. Still, give the highest one that matches. */ | |
792 | ||
793 | for (fid = get_current_frame (); | |
794 | fid && fid->frame != args[0]; | |
795 | fid = get_prev_frame (fid)) | |
796 | ; | |
797 | ||
798 | if (fid) | |
799 | while ((tfid = get_prev_frame (fid)) && | |
800 | (tfid->frame == args[0])) | |
801 | fid = tfid; | |
c5aa993b | 802 | |
c906108c SS |
803 | /* We couldn't identify the frame as an existing frame, but |
804 | perhaps we can create one with a single argument. */ | |
805 | } | |
806 | ||
c5aa993b | 807 | default: |
c906108c SS |
808 | #ifdef SETUP_ARBITRARY_FRAME |
809 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
810 | #else | |
811 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 812 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
813 | if (numargs == 1) |
814 | return create_new_frame (args[0], 0); | |
815 | error ("Too many args in frame specification"); | |
816 | #endif | |
817 | /* NOTREACHED */ | |
818 | } | |
819 | /* NOTREACHED */ | |
820 | } | |
821 | ||
822 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
823 | that if it is unsure about the answer, it returns 0 | |
824 | instead of guessing (this happens on the VAX and i960, for example). | |
825 | ||
826 | On most machines, we never have to guess about the args address, | |
827 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
828 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
829 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
830 | #endif | |
831 | ||
832 | /* Print verbosely the selected frame or the frame at address ADDR. | |
833 | This means absolutely all information in the frame is printed. */ | |
834 | ||
835 | static void | |
fba45db2 | 836 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
837 | { |
838 | struct frame_info *fi; | |
839 | struct symtab_and_line sal; | |
840 | struct symbol *func; | |
841 | struct symtab *s; | |
842 | struct frame_info *calling_frame_info; | |
843 | int i, count, numregs; | |
844 | char *funname = 0; | |
845 | enum language funlang = language_unknown; | |
846 | ||
847 | if (!target_has_stack) | |
848 | error ("No stack."); | |
849 | ||
850 | fi = parse_frame_specification (addr_exp); | |
851 | if (fi == NULL) | |
852 | error ("Invalid frame specified."); | |
853 | ||
854 | sal = find_pc_line (fi->pc, | |
855 | fi->next != NULL | |
856 | && !fi->next->signal_handler_caller | |
857 | && !frame_in_dummy (fi->next)); | |
858 | func = get_frame_function (fi); | |
c5aa993b | 859 | s = find_pc_symtab (fi->pc); |
c906108c SS |
860 | if (func) |
861 | { | |
862 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
863 | * the demangled name that we already have stored in | |
864 | * the symbol table, but we stored a version with | |
865 | * DMGL_PARAMS turned on, and here we don't want | |
866 | * to display parameters. So call the demangler again, | |
867 | * with DMGL_ANSI only. RT | |
868 | * (Yes, I know that printf_symbol_filtered() will | |
869 | * again try to demangle the name on the fly, but | |
870 | * the issue is that if cplus_demangle() fails here, | |
871 | * it'll fail there too. So we want to catch the failure | |
872 | * ("demangled==NULL" case below) here, while we still | |
873 | * have our hands on the function symbol.) | |
874 | */ | |
c5aa993b JM |
875 | char *demangled; |
876 | funname = SYMBOL_NAME (func); | |
877 | funlang = SYMBOL_LANGUAGE (func); | |
878 | if (funlang == language_cplus) | |
879 | { | |
880 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
881 | /* If the demangler fails, try the demangled name | |
882 | * from the symbol table. This'll have parameters, | |
883 | * but that's preferable to diplaying a mangled name. | |
884 | */ | |
885 | if (demangled == NULL) | |
886 | funname = SYMBOL_SOURCE_NAME (func); | |
887 | } | |
c906108c SS |
888 | } |
889 | else | |
890 | { | |
891 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
892 | if (msymbol != NULL) | |
893 | { | |
894 | funname = SYMBOL_NAME (msymbol); | |
895 | funlang = SYMBOL_LANGUAGE (msymbol); | |
896 | } | |
897 | } | |
898 | calling_frame_info = get_prev_frame (fi); | |
899 | ||
900 | if (!addr_exp && selected_frame_level >= 0) | |
901 | { | |
902 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
903 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
904 | printf_filtered (":\n"); | |
905 | } | |
906 | else | |
907 | { | |
908 | printf_filtered ("Stack frame at "); | |
909 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
910 | printf_filtered (":\n"); | |
911 | } | |
912 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
913 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
914 | ||
915 | wrap_here (" "); | |
916 | if (funname) | |
917 | { | |
918 | printf_filtered (" in "); | |
919 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
920 | DMGL_ANSI | DMGL_PARAMS); | |
921 | } | |
922 | wrap_here (" "); | |
923 | if (sal.symtab) | |
924 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
925 | puts_filtered ("; "); | |
926 | wrap_here (" "); | |
927 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
928 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
929 | printf_filtered ("\n"); | |
930 | ||
931 | { | |
392a587b JM |
932 | int frameless; |
933 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
934 | if (frameless) |
935 | printf_filtered (" (FRAMELESS),"); | |
936 | } | |
937 | ||
938 | if (calling_frame_info) | |
939 | { | |
940 | printf_filtered (" called by frame at "); | |
941 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
942 | } | |
943 | if (fi->next && calling_frame_info) | |
944 | puts_filtered (","); | |
945 | wrap_here (" "); | |
946 | if (fi->next) | |
947 | { | |
948 | printf_filtered (" caller of frame at "); | |
949 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
950 | } | |
951 | if (fi->next || calling_frame_info) | |
952 | puts_filtered ("\n"); | |
953 | if (s) | |
954 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
955 | ||
956 | #ifdef PRINT_EXTRA_FRAME_INFO | |
957 | PRINT_EXTRA_FRAME_INFO (fi); | |
958 | #endif | |
959 | ||
960 | { | |
961 | /* Address of the argument list for this frame, or 0. */ | |
962 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
963 | /* Number of args for this frame, or -1 if unknown. */ | |
964 | int numargs; | |
965 | ||
966 | if (arg_list == 0) | |
967 | printf_filtered (" Arglist at unknown address.\n"); | |
968 | else | |
969 | { | |
970 | printf_filtered (" Arglist at "); | |
971 | print_address_numeric (arg_list, 1, gdb_stdout); | |
972 | printf_filtered (","); | |
973 | ||
392a587b | 974 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
975 | if (numargs < 0) |
976 | puts_filtered (" args: "); | |
977 | else if (numargs == 0) | |
978 | puts_filtered (" no args."); | |
979 | else if (numargs == 1) | |
980 | puts_filtered (" 1 arg: "); | |
981 | else | |
982 | printf_filtered (" %d args: ", numargs); | |
983 | print_frame_args (func, fi, numargs, gdb_stdout); | |
984 | puts_filtered ("\n"); | |
985 | } | |
986 | } | |
987 | { | |
988 | /* Address of the local variables for this frame, or 0. */ | |
989 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
990 | ||
991 | if (arg_list == 0) | |
992 | printf_filtered (" Locals at unknown address,"); | |
993 | else | |
994 | { | |
995 | printf_filtered (" Locals at "); | |
996 | print_address_numeric (arg_list, 1, gdb_stdout); | |
997 | printf_filtered (","); | |
998 | } | |
999 | } | |
1000 | ||
1001 | FRAME_INIT_SAVED_REGS (fi); | |
1002 | if (fi->saved_regs != NULL) | |
1003 | { | |
1004 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 1005 | actually the value of the previous frame's sp. */ |
c906108c SS |
1006 | printf_filtered (" Previous frame's sp is "); |
1007 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
1008 | printf_filtered ("\n"); | |
1009 | count = 0; | |
1010 | numregs = ARCH_NUM_REGS; | |
1011 | for (i = 0; i < numregs; i++) | |
1012 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
1013 | { | |
1014 | if (count == 0) | |
1015 | puts_filtered (" Saved registers:\n "); | |
1016 | else | |
1017 | puts_filtered (","); | |
1018 | wrap_here (" "); | |
1019 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
1020 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
1021 | count++; | |
1022 | } | |
1023 | if (count) | |
1024 | puts_filtered ("\n"); | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | /* We could get some information about saved registers by | |
c5aa993b JM |
1029 | calling get_saved_register on each register. Which info goes |
1030 | with which frame is necessarily lost, however, and I suspect | |
1031 | that the users don't care whether they get the info. */ | |
c906108c SS |
1032 | puts_filtered ("\n"); |
1033 | } | |
1034 | } | |
1035 | ||
1036 | #if 0 | |
1037 | /* Set a limit on the number of frames printed by default in a | |
1038 | backtrace. */ | |
1039 | ||
1040 | static int backtrace_limit; | |
1041 | ||
1042 | static void | |
fba45db2 | 1043 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 1044 | { |
bb518678 | 1045 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
1046 | |
1047 | if (count < 0) | |
1048 | error ("Negative argument not meaningful as backtrace limit."); | |
1049 | ||
1050 | backtrace_limit = count; | |
1051 | } | |
1052 | ||
1053 | static void | |
fba45db2 | 1054 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
1055 | { |
1056 | if (arg) | |
1057 | error ("\"Info backtrace-limit\" takes no arguments."); | |
1058 | ||
1059 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
1060 | } | |
1061 | #endif | |
1062 | ||
1063 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
1064 | ||
a14ed312 KB |
1065 | static void backtrace_command_1 (char *count_exp, int show_locals, |
1066 | int from_tty); | |
c906108c | 1067 | static void |
fba45db2 | 1068 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1069 | { |
1070 | struct frame_info *fi; | |
1071 | register int count; | |
1072 | register int i; | |
1073 | register struct frame_info *trailing; | |
1074 | register int trailing_level; | |
1075 | ||
1076 | if (!target_has_stack) | |
1077 | error ("No stack."); | |
1078 | ||
1079 | /* The following code must do two things. First, it must | |
1080 | set the variable TRAILING to the frame from which we should start | |
1081 | printing. Second, it must set the variable count to the number | |
1082 | of frames which we should print, or -1 if all of them. */ | |
1083 | trailing = get_current_frame (); | |
d082b2bb AC |
1084 | |
1085 | /* The target can be in a state where there is no valid frames | |
1086 | (e.g., just connected). */ | |
1087 | if (trailing == NULL) | |
1088 | error ("No stack."); | |
1089 | ||
c906108c SS |
1090 | trailing_level = 0; |
1091 | if (count_exp) | |
1092 | { | |
bb518678 | 1093 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1094 | if (count < 0) |
1095 | { | |
1096 | struct frame_info *current; | |
1097 | ||
1098 | count = -count; | |
1099 | ||
1100 | current = trailing; | |
1101 | while (current && count--) | |
1102 | { | |
1103 | QUIT; | |
1104 | current = get_prev_frame (current); | |
1105 | } | |
c5aa993b | 1106 | |
c906108c SS |
1107 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1108 | will be COUNT below it. */ | |
1109 | while (current) | |
1110 | { | |
1111 | QUIT; | |
1112 | trailing = get_prev_frame (trailing); | |
1113 | current = get_prev_frame (current); | |
1114 | trailing_level++; | |
1115 | } | |
c5aa993b | 1116 | |
c906108c SS |
1117 | count = -1; |
1118 | } | |
1119 | } | |
1120 | else | |
1121 | count = -1; | |
1122 | ||
1123 | if (info_verbose) | |
1124 | { | |
1125 | struct partial_symtab *ps; | |
c5aa993b | 1126 | |
c906108c | 1127 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1128 | a separate pass so that "Reading in symbols for xxx" messages |
1129 | don't screw up the appearance of the backtrace. Also | |
1130 | if people have strong opinions against reading symbols for | |
1131 | backtrace this may have to be an option. */ | |
c906108c SS |
1132 | i = count; |
1133 | for (fi = trailing; | |
1134 | fi != NULL && i--; | |
1135 | fi = get_prev_frame (fi)) | |
1136 | { | |
1137 | QUIT; | |
1138 | ps = find_pc_psymtab (fi->pc); | |
1139 | if (ps) | |
1140 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | for (i = 0, fi = trailing; | |
1145 | fi && count--; | |
1146 | i++, fi = get_prev_frame (fi)) | |
1147 | { | |
1148 | QUIT; | |
1149 | ||
1150 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1151 | means further attempts to backtrace would fail (on the other |
1152 | hand, perhaps the code does or could be fixed to make sure | |
1153 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1154 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1155 | if (show_locals) | |
c5aa993b | 1156 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1157 | } |
1158 | ||
1159 | /* If we've stopped before the end, mention that. */ | |
1160 | if (fi && from_tty) | |
1161 | printf_filtered ("(More stack frames follow...)\n"); | |
1162 | } | |
1163 | ||
1164 | static void | |
fba45db2 | 1165 | backtrace_command (char *arg, int from_tty) |
c906108c | 1166 | { |
c5aa993b JM |
1167 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1168 | char **argv = (char **) NULL; | |
1169 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1170 | char *argPtr = arg; | |
c906108c | 1171 | |
c5aa993b | 1172 | if (arg != (char *) NULL) |
c906108c SS |
1173 | { |
1174 | int i; | |
1175 | ||
c5aa993b | 1176 | argv = buildargv (arg); |
7a292a7a | 1177 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1178 | argc = 0; |
c5aa993b JM |
1179 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1180 | { | |
745b8ca0 | 1181 | unsigned int j; |
c5aa993b JM |
1182 | |
1183 | for (j = 0; (j < strlen (argv[i])); j++) | |
1184 | argv[i][j] = tolower (argv[i][j]); | |
1185 | ||
1186 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1187 | argIndicatingFullTrace = argc; | |
1188 | else | |
1189 | { | |
1190 | argc++; | |
1191 | totArgLen += strlen (argv[i]); | |
1192 | } | |
1193 | } | |
c906108c SS |
1194 | totArgLen += argc; |
1195 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1196 | { |
1197 | if (totArgLen > 0) | |
1198 | { | |
1199 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1200 | if (!argPtr) | |
1201 | nomem (0); | |
1202 | else | |
1203 | { | |
1204 | memset (argPtr, 0, totArgLen + 1); | |
1205 | for (i = 0; (i < (argc + 1)); i++) | |
1206 | { | |
1207 | if (i != argIndicatingFullTrace) | |
1208 | { | |
1209 | strcat (argPtr, argv[i]); | |
1210 | strcat (argPtr, " "); | |
1211 | } | |
1212 | } | |
1213 | } | |
1214 | } | |
1215 | else | |
1216 | argPtr = (char *) NULL; | |
1217 | } | |
c906108c SS |
1218 | } |
1219 | ||
1220 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1221 | ||
1222 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1223 | xfree (argPtr); |
c906108c SS |
1224 | |
1225 | if (old_chain) | |
c5aa993b | 1226 | do_cleanups (old_chain); |
c906108c SS |
1227 | } |
1228 | ||
a14ed312 | 1229 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1230 | static void |
fba45db2 | 1231 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1232 | { |
1233 | backtrace_command_1 (arg, 1, from_tty); | |
1234 | } | |
c906108c | 1235 | \f |
c5aa993b | 1236 | |
c906108c SS |
1237 | /* Print the local variables of a block B active in FRAME. |
1238 | Return 1 if any variables were printed; 0 otherwise. */ | |
1239 | ||
1240 | static int | |
fba45db2 KB |
1241 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1242 | int num_tabs, register struct ui_file *stream) | |
c906108c SS |
1243 | { |
1244 | int nsyms; | |
1245 | register int i, j; | |
1246 | register struct symbol *sym; | |
1247 | register int values_printed = 0; | |
1248 | ||
1249 | nsyms = BLOCK_NSYMS (b); | |
1250 | ||
1251 | for (i = 0; i < nsyms; i++) | |
1252 | { | |
1253 | sym = BLOCK_SYM (b, i); | |
1254 | switch (SYMBOL_CLASS (sym)) | |
1255 | { | |
1256 | case LOC_LOCAL: | |
1257 | case LOC_REGISTER: | |
1258 | case LOC_STATIC: | |
1259 | case LOC_BASEREG: | |
1260 | values_printed = 1; | |
1261 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1262 | fputs_filtered ("\t", stream); |
c906108c SS |
1263 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1264 | fputs_filtered (" = ", stream); | |
1265 | print_variable_value (sym, fi, stream); | |
1266 | fprintf_filtered (stream, "\n"); | |
1267 | break; | |
1268 | ||
1269 | default: | |
1270 | /* Ignore symbols which are not locals. */ | |
1271 | break; | |
1272 | } | |
1273 | } | |
1274 | return values_printed; | |
1275 | } | |
1276 | ||
1277 | /* Same, but print labels. */ | |
1278 | ||
1279 | static int | |
fba45db2 KB |
1280 | print_block_frame_labels (struct block *b, int *have_default, |
1281 | register struct ui_file *stream) | |
c906108c SS |
1282 | { |
1283 | int nsyms; | |
1284 | register int i; | |
1285 | register struct symbol *sym; | |
1286 | register int values_printed = 0; | |
1287 | ||
1288 | nsyms = BLOCK_NSYMS (b); | |
1289 | ||
1290 | for (i = 0; i < nsyms; i++) | |
1291 | { | |
1292 | sym = BLOCK_SYM (b, i); | |
1293 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
1294 | { | |
1295 | if (*have_default) | |
1296 | continue; | |
1297 | *have_default = 1; | |
1298 | } | |
1299 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1300 | { | |
1301 | struct symtab_and_line sal; | |
1302 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1303 | values_printed = 1; | |
1304 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1305 | if (addressprint) | |
1306 | { | |
1307 | fprintf_filtered (stream, " "); | |
1308 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1309 | } | |
1310 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1311 | sal.symtab->filename, sal.line); | |
1312 | } | |
1313 | } | |
1314 | return values_printed; | |
1315 | } | |
1316 | ||
1317 | /* Print on STREAM all the local variables in frame FRAME, | |
1318 | including all the blocks active in that frame | |
1319 | at its current pc. | |
1320 | ||
1321 | Returns 1 if the job was done, | |
1322 | or 0 if nothing was printed because we have no info | |
1323 | on the function running in FRAME. */ | |
1324 | ||
1325 | static void | |
fba45db2 KB |
1326 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1327 | register struct ui_file *stream) | |
c906108c SS |
1328 | { |
1329 | register struct block *block = get_frame_block (fi); | |
1330 | register int values_printed = 0; | |
1331 | ||
1332 | if (block == 0) | |
1333 | { | |
1334 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1335 | return; | |
1336 | } | |
c5aa993b | 1337 | |
c906108c SS |
1338 | while (block != 0) |
1339 | { | |
1340 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1341 | values_printed = 1; | |
1342 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1343 | Don't continue to its superblock, the block of |
1344 | per-file symbols. */ | |
c906108c SS |
1345 | if (BLOCK_FUNCTION (block)) |
1346 | break; | |
1347 | block = BLOCK_SUPERBLOCK (block); | |
1348 | } | |
1349 | ||
1350 | if (!values_printed) | |
1351 | { | |
1352 | fprintf_filtered (stream, "No locals.\n"); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | /* Same, but print labels. */ | |
1357 | ||
1358 | static void | |
fba45db2 KB |
1359 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1360 | register struct ui_file *stream) | |
c906108c SS |
1361 | { |
1362 | register struct blockvector *bl; | |
1363 | register struct block *block = get_frame_block (fi); | |
1364 | register int values_printed = 0; | |
1365 | int index, have_default = 0; | |
1366 | char *blocks_printed; | |
1367 | CORE_ADDR pc = fi->pc; | |
1368 | ||
1369 | if (block == 0) | |
1370 | { | |
1371 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1376 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1377 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1378 | ||
1379 | while (block != 0) | |
1380 | { | |
1381 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1382 | int last_index; | |
1383 | ||
1384 | if (bl != blockvector_for_pc (end, &index)) | |
1385 | error ("blockvector blotch"); | |
1386 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1387 | error ("blockvector botch"); | |
1388 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1389 | index += 1; | |
1390 | ||
1391 | /* Don't print out blocks that have gone by. */ | |
1392 | while (index < last_index | |
1393 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1394 | index++; | |
1395 | ||
1396 | while (index < last_index | |
1397 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1398 | { | |
1399 | if (blocks_printed[index] == 0) | |
1400 | { | |
1401 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1402 | values_printed = 1; | |
1403 | blocks_printed[index] = 1; | |
1404 | } | |
1405 | index++; | |
1406 | } | |
1407 | if (have_default) | |
1408 | return; | |
1409 | if (values_printed && this_level_only) | |
1410 | return; | |
1411 | ||
1412 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1413 | Don't continue to its superblock, the block of |
1414 | per-file symbols. */ | |
c906108c SS |
1415 | if (BLOCK_FUNCTION (block)) |
1416 | break; | |
1417 | block = BLOCK_SUPERBLOCK (block); | |
1418 | } | |
1419 | ||
1420 | if (!values_printed && !this_level_only) | |
1421 | { | |
1422 | fprintf_filtered (stream, "No catches.\n"); | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | /* ARGSUSED */ | |
1427 | void | |
fba45db2 | 1428 | locals_info (char *args, int from_tty) |
c906108c SS |
1429 | { |
1430 | if (!selected_frame) | |
1431 | error ("No frame selected."); | |
1432 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1433 | } | |
1434 | ||
1435 | static void | |
fba45db2 | 1436 | catch_info (char *ignore, int from_tty) |
c906108c | 1437 | { |
c5aa993b | 1438 | struct symtab_and_line *sal; |
c906108c | 1439 | |
c5aa993b | 1440 | /* Check for target support for exception handling */ |
c906108c SS |
1441 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1442 | if (sal) | |
1443 | { | |
1444 | /* Currently not handling this */ | |
1445 | /* Ideally, here we should interact with the C++ runtime | |
1446 | system to find the list of active handlers, etc. */ | |
1447 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1448 | #if 0 | |
c5aa993b JM |
1449 | if (!selected_frame) |
1450 | error ("No frame selected."); | |
c906108c SS |
1451 | #endif |
1452 | } | |
1453 | else | |
1454 | { | |
c5aa993b | 1455 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1456 | if (!selected_frame) |
c5aa993b JM |
1457 | error ("No frame selected."); |
1458 | ||
c906108c SS |
1459 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1460 | } | |
1461 | } | |
1462 | ||
1463 | static void | |
fba45db2 KB |
1464 | print_frame_arg_vars (register struct frame_info *fi, |
1465 | register struct ui_file *stream) | |
c906108c SS |
1466 | { |
1467 | struct symbol *func = get_frame_function (fi); | |
1468 | register struct block *b; | |
1469 | int nsyms; | |
1470 | register int i; | |
1471 | register struct symbol *sym, *sym2; | |
1472 | register int values_printed = 0; | |
1473 | ||
1474 | if (func == 0) | |
1475 | { | |
1476 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1477 | return; | |
1478 | } | |
1479 | ||
1480 | b = SYMBOL_BLOCK_VALUE (func); | |
1481 | nsyms = BLOCK_NSYMS (b); | |
1482 | ||
1483 | for (i = 0; i < nsyms; i++) | |
1484 | { | |
1485 | sym = BLOCK_SYM (b, i); | |
1486 | switch (SYMBOL_CLASS (sym)) | |
1487 | { | |
1488 | case LOC_ARG: | |
1489 | case LOC_LOCAL_ARG: | |
1490 | case LOC_REF_ARG: | |
1491 | case LOC_REGPARM: | |
1492 | case LOC_REGPARM_ADDR: | |
1493 | case LOC_BASEREG_ARG: | |
1494 | values_printed = 1; | |
1495 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1496 | fputs_filtered (" = ", stream); | |
1497 | ||
1498 | /* We have to look up the symbol because arguments can have | |
1499 | two entries (one a parameter, one a local) and the one we | |
1500 | want is the local, which lookup_symbol will find for us. | |
1501 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1502 | small structure and gcc2 when the argument type is float | |
1503 | and it is passed as a double and converted to float by | |
1504 | the prologue (in the latter case the type of the LOC_ARG | |
1505 | symbol is double and the type of the LOC_LOCAL symbol is | |
1506 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1507 | are not combined in symbol-reading. */ | |
1508 | ||
1509 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1510 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1511 | print_variable_value (sym2, fi, stream); |
1512 | fprintf_filtered (stream, "\n"); | |
1513 | break; | |
1514 | ||
1515 | default: | |
1516 | /* Don't worry about things which aren't arguments. */ | |
1517 | break; | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | if (!values_printed) | |
1522 | { | |
1523 | fprintf_filtered (stream, "No arguments.\n"); | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | void | |
fba45db2 | 1528 | args_info (char *ignore, int from_tty) |
c906108c SS |
1529 | { |
1530 | if (!selected_frame) | |
1531 | error ("No frame selected."); | |
1532 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1533 | } | |
1534 | ||
1535 | ||
1536 | static void | |
fba45db2 | 1537 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1538 | { |
c5aa993b JM |
1539 | args_info (ignore, from_tty); |
1540 | locals_info (ignore, from_tty); | |
c906108c | 1541 | } |
c906108c | 1542 | \f |
c5aa993b | 1543 | |
c906108c SS |
1544 | /* Select frame FI, and note that its stack level is LEVEL. |
1545 | LEVEL may be -1 if an actual level number is not known. */ | |
1546 | ||
1547 | void | |
fba45db2 | 1548 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1549 | { |
1550 | register struct symtab *s; | |
1551 | ||
1552 | selected_frame = fi; | |
1553 | selected_frame_level = level; | |
1554 | if (selected_frame_level_changed_hook) | |
1555 | selected_frame_level_changed_hook (level); | |
1556 | ||
1557 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1558 | source language of this frame, and switch to it if desired. */ | |
1559 | if (fi) | |
c5aa993b JM |
1560 | { |
1561 | s = find_pc_symtab (fi->pc); | |
1562 | if (s | |
1563 | && s->language != current_language->la_language | |
1564 | && s->language != language_unknown | |
1565 | && language_mode == language_mode_auto) | |
1566 | { | |
1567 | set_language (s->language); | |
1568 | } | |
1569 | /* elz: this if here fixes the problem with the pc not being displayed | |
1570 | in the tui asm layout, with no debug symbols. The value of s | |
1571 | would be 0 here, and select_source_symtab would abort the | |
1572 | command by calling the 'error' function */ | |
1573 | if (s) | |
1574 | { | |
1575 | TUIDO (((TuiOpaqueFuncPtr) tui_vSelectSourceSymtab, s)); | |
1576 | } | |
c906108c | 1577 | } |
c906108c | 1578 | } |
c906108c | 1579 | \f |
c5aa993b | 1580 | |
c906108c SS |
1581 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1582 | the stack frame and show the source if this is the tui version. */ | |
1583 | void | |
fba45db2 | 1584 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1585 | { |
c5aa993b | 1586 | select_frame (fi, level); |
c906108c SS |
1587 | if (fi) |
1588 | { | |
c5aa993b JM |
1589 | print_stack_frame (fi, level, 1); |
1590 | TUIDO (((TuiOpaqueFuncPtr) tui_vCheckDataValues, fi)); | |
c906108c SS |
1591 | } |
1592 | } | |
c906108c | 1593 | \f |
c5aa993b | 1594 | |
c906108c SS |
1595 | /* Select frame FI, noting that its stack level is LEVEL. Be silent if |
1596 | not the TUI */ | |
7a292a7a | 1597 | #if 0 |
c906108c | 1598 | void |
fba45db2 | 1599 | select_and_maybe_print_frame (struct frame_info *fi, int level) |
c906108c SS |
1600 | { |
1601 | if (!tui_version) | |
c5aa993b | 1602 | select_frame (fi, level); |
c906108c | 1603 | else |
c5aa993b | 1604 | select_and_print_frame (fi, level); |
c906108c | 1605 | } |
7a292a7a | 1606 | #endif |
c906108c SS |
1607 | |
1608 | ||
1609 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. | |
1610 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1611 | ||
1612 | void | |
fba45db2 | 1613 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1614 | { |
1615 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1616 | *levelp = selected_frame_level; | |
1617 | } | |
1618 | ||
1619 | /* Return the symbol-block in which the selected frame is executing. | |
1620 | Can return zero under various legitimate circumstances. */ | |
1621 | ||
1622 | struct block * | |
fba45db2 | 1623 | get_selected_block (void) |
c906108c SS |
1624 | { |
1625 | if (!target_has_stack) | |
1626 | return 0; | |
1627 | ||
1628 | if (!selected_frame) | |
1629 | return get_current_block (); | |
1630 | return get_frame_block (selected_frame); | |
1631 | } | |
1632 | ||
1633 | /* Find a frame a certain number of levels away from FRAME. | |
1634 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1635 | Positive means go to earlier frames (up); negative, the reverse. | |
1636 | The int that contains the number of levels is counted toward | |
1637 | zero as the frames for those levels are found. | |
1638 | If the top or bottom frame is reached, that frame is returned, | |
1639 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1640 | how much farther the original request asked to go. */ | |
1641 | ||
1642 | struct frame_info * | |
fba45db2 KB |
1643 | find_relative_frame (register struct frame_info *frame, |
1644 | register int *level_offset_ptr) | |
c906108c SS |
1645 | { |
1646 | register struct frame_info *prev; | |
1647 | register struct frame_info *frame1; | |
1648 | ||
1649 | /* Going up is simple: just do get_prev_frame enough times | |
1650 | or until initial frame is reached. */ | |
1651 | while (*level_offset_ptr > 0) | |
1652 | { | |
1653 | prev = get_prev_frame (frame); | |
1654 | if (prev == 0) | |
1655 | break; | |
1656 | (*level_offset_ptr)--; | |
1657 | frame = prev; | |
1658 | } | |
1659 | /* Going down is just as simple. */ | |
1660 | if (*level_offset_ptr < 0) | |
1661 | { | |
c5aa993b JM |
1662 | while (*level_offset_ptr < 0) |
1663 | { | |
1664 | frame1 = get_next_frame (frame); | |
1665 | if (!frame1) | |
1666 | break; | |
1667 | frame = frame1; | |
1668 | (*level_offset_ptr)++; | |
1669 | } | |
c906108c SS |
1670 | } |
1671 | return frame; | |
1672 | } | |
1673 | ||
1674 | /* The "select_frame" command. With no arg, NOP. | |
1675 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1676 | valid level. Otherwise, treat level_exp as an address expression | |
1677 | and select it. See parse_frame_specification for more info on proper | |
1678 | frame expressions. */ | |
1679 | ||
1680 | /* ARGSUSED */ | |
8b93c638 JM |
1681 | #ifdef UI_OUT |
1682 | void | |
fba45db2 | 1683 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1684 | { |
1685 | select_frame_command (level_exp, from_tty); | |
1686 | } | |
1687 | #endif | |
c906108c | 1688 | static void |
fba45db2 | 1689 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1690 | { |
1691 | register struct frame_info *frame, *frame1; | |
1692 | unsigned int level = 0; | |
1693 | ||
1694 | if (!target_has_stack) | |
1695 | error ("No stack."); | |
1696 | ||
1697 | frame = parse_frame_specification (level_exp); | |
1698 | ||
1699 | /* Try to figure out what level this frame is. But if there is | |
1700 | no current stack, don't error out -- let the user set one. */ | |
1701 | frame1 = 0; | |
c5aa993b JM |
1702 | if (get_current_frame ()) |
1703 | { | |
1704 | for (frame1 = get_prev_frame (0); | |
1705 | frame1 && frame1 != frame; | |
1706 | frame1 = get_prev_frame (frame1)) | |
1707 | level++; | |
1708 | } | |
c906108c SS |
1709 | |
1710 | if (!frame1) | |
1711 | level = 0; | |
1712 | ||
1713 | select_frame (frame, level); | |
1714 | } | |
1715 | ||
1716 | /* The "frame" command. With no arg, print selected frame briefly. | |
1717 | With arg, behaves like select_frame and then prints the selected | |
1718 | frame. */ | |
1719 | ||
1720 | void | |
fba45db2 | 1721 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1722 | { |
1723 | select_frame_command (level_exp, from_tty); | |
1724 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1725 | } | |
1726 | ||
1727 | /* The XDB Compatibility command to print the current frame. */ | |
1728 | ||
7a292a7a | 1729 | static void |
fba45db2 | 1730 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1731 | { |
1732 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1733 | error ("No stack."); |
7a292a7a SS |
1734 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1735 | } | |
c906108c SS |
1736 | |
1737 | /* Select the frame up one or COUNT stack levels | |
1738 | from the previously selected frame, and print it briefly. */ | |
1739 | ||
1740 | /* ARGSUSED */ | |
1741 | static void | |
fba45db2 | 1742 | up_silently_base (char *count_exp) |
c906108c SS |
1743 | { |
1744 | register struct frame_info *fi; | |
1745 | int count = 1, count1; | |
1746 | if (count_exp) | |
bb518678 | 1747 | count = parse_and_eval_long (count_exp); |
c906108c | 1748 | count1 = count; |
c5aa993b | 1749 | |
c906108c SS |
1750 | if (target_has_stack == 0 || selected_frame == 0) |
1751 | error ("No stack."); | |
1752 | ||
1753 | fi = find_relative_frame (selected_frame, &count1); | |
1754 | if (count1 != 0 && count_exp == 0) | |
1755 | error ("Initial frame selected; you cannot go up."); | |
1756 | select_frame (fi, selected_frame_level + count - count1); | |
1757 | } | |
1758 | ||
1759 | static void | |
fba45db2 | 1760 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1761 | { |
c5aa993b | 1762 | up_silently_base (count_exp); |
c906108c SS |
1763 | if (tui_version) |
1764 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1765 | } | |
1766 | ||
1767 | static void | |
fba45db2 | 1768 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1769 | { |
1770 | up_silently_base (count_exp); | |
1771 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1772 | } | |
1773 | ||
1774 | /* Select the frame down one or COUNT stack levels | |
1775 | from the previously selected frame, and print it briefly. */ | |
1776 | ||
1777 | /* ARGSUSED */ | |
1778 | static void | |
fba45db2 | 1779 | down_silently_base (char *count_exp) |
c906108c SS |
1780 | { |
1781 | register struct frame_info *frame; | |
1782 | int count = -1, count1; | |
1783 | if (count_exp) | |
bb518678 | 1784 | count = -parse_and_eval_long (count_exp); |
c906108c | 1785 | count1 = count; |
c5aa993b | 1786 | |
c906108c SS |
1787 | if (target_has_stack == 0 || selected_frame == 0) |
1788 | error ("No stack."); | |
1789 | ||
1790 | frame = find_relative_frame (selected_frame, &count1); | |
1791 | if (count1 != 0 && count_exp == 0) | |
1792 | { | |
1793 | ||
1794 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1795 | means to really go down (and let me know if that is |
1796 | impossible), but "down 9999" can be used to mean go all the way | |
1797 | down without getting an error. */ | |
c906108c SS |
1798 | |
1799 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1800 | } | |
1801 | ||
1802 | select_frame (frame, selected_frame_level + count - count1); | |
1803 | } | |
1804 | ||
1805 | /* ARGSUSED */ | |
1806 | static void | |
fba45db2 | 1807 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1808 | { |
1809 | down_silently_base (count_exp); | |
1810 | if (tui_version) | |
1811 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1812 | } | |
1813 | ||
1814 | static void | |
fba45db2 | 1815 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1816 | { |
1817 | down_silently_base (count_exp); | |
1818 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1819 | } | |
1820 | \f | |
8b93c638 JM |
1821 | #ifdef UI_OUT |
1822 | void | |
fba45db2 | 1823 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1824 | { |
1825 | return_command (retval_exp, from_tty); | |
1826 | } | |
1827 | #endif | |
c906108c | 1828 | static void |
fba45db2 | 1829 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1830 | { |
1831 | struct symbol *thisfun; | |
1832 | CORE_ADDR selected_frame_addr; | |
1833 | CORE_ADDR selected_frame_pc; | |
1834 | struct frame_info *frame; | |
1835 | value_ptr return_value = NULL; | |
1836 | ||
1837 | if (selected_frame == NULL) | |
1838 | error ("No selected frame."); | |
1839 | thisfun = get_frame_function (selected_frame); | |
1840 | selected_frame_addr = FRAME_FP (selected_frame); | |
1841 | selected_frame_pc = selected_frame->pc; | |
1842 | ||
1843 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1844 | ||
1845 | if (retval_exp) | |
1846 | { | |
1847 | struct type *return_type = NULL; | |
1848 | ||
1849 | return_value = parse_and_eval (retval_exp); | |
1850 | ||
1851 | /* Cast return value to the return type of the function. */ | |
1852 | if (thisfun != NULL) | |
1853 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1854 | if (return_type == NULL) | |
1855 | return_type = builtin_type_int; | |
1856 | return_value = value_cast (return_type, return_value); | |
1857 | ||
1858 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1859 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1860 | if (VALUE_LAZY (return_value)) |
1861 | value_fetch_lazy (return_value); | |
1862 | } | |
1863 | ||
1864 | /* If interactive, require confirmation. */ | |
1865 | ||
1866 | if (from_tty) | |
1867 | { | |
1868 | if (thisfun != 0) | |
1869 | { | |
1870 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1871 | { | |
1872 | error ("Not confirmed."); | |
1873 | /* NOTREACHED */ | |
1874 | } | |
1875 | } | |
c5aa993b JM |
1876 | else if (!query ("Make selected stack frame return now? ")) |
1877 | error ("Not confirmed."); | |
c906108c SS |
1878 | } |
1879 | ||
1880 | /* Do the real work. Pop until the specified frame is current. We | |
1881 | use this method because the selected_frame is not valid after | |
1882 | a POP_FRAME. The pc comparison makes this work even if the | |
1883 | selected frame shares its fp with another frame. */ | |
1884 | ||
c5aa993b | 1885 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1886 | || selected_frame_pc != frame->pc) |
1887 | POP_FRAME; | |
1888 | ||
1889 | /* Then pop that frame. */ | |
1890 | ||
1891 | POP_FRAME; | |
1892 | ||
1893 | /* Compute the return value (if any) and store in the place | |
1894 | for return values. */ | |
1895 | ||
1896 | if (retval_exp) | |
1897 | set_return_value (return_value); | |
1898 | ||
1a2aab69 PS |
1899 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1900 | ||
1901 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1902 | FRAME_FP (get_current_frame ()))) | |
1903 | POP_FRAME; | |
1904 | ||
c906108c SS |
1905 | /* If interactive, print the frame that is now current. */ |
1906 | ||
1907 | if (from_tty) | |
1908 | frame_command ("0", 1); | |
1909 | else | |
1910 | select_frame_command ("0", 0); | |
1911 | } | |
1912 | ||
1913 | /* Sets the scope to input function name, provided that the | |
1914 | function is within the current stack frame */ | |
1915 | ||
1916 | struct function_bounds | |
1917 | { | |
1918 | CORE_ADDR low, high; | |
1919 | }; | |
1920 | ||
a14ed312 | 1921 | static void func_command (char *arg, int from_tty); |
c906108c | 1922 | static void |
fba45db2 | 1923 | func_command (char *arg, int from_tty) |
c906108c SS |
1924 | { |
1925 | struct frame_info *fp; | |
1926 | int found = 0; | |
1927 | struct symtabs_and_lines sals; | |
1928 | int i; | |
1929 | int level = 1; | |
1930 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1931 | ||
1932 | if (arg != (char *) NULL) | |
1933 | return; | |
1934 | ||
1935 | fp = parse_frame_specification ("0"); | |
1936 | sals = decode_line_spec (arg, 1); | |
1937 | func_bounds = (struct function_bounds *) xmalloc ( | |
1938 | sizeof (struct function_bounds) * sals.nelts); | |
1939 | for (i = 0; (i < sals.nelts && !found); i++) | |
1940 | { | |
1941 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1942 | find_pc_partial_function (sals.sals[i].pc, | |
1943 | (char **) NULL, | |
1944 | &func_bounds[i].low, | |
1945 | &func_bounds[i].high) == 0) | |
1946 | { | |
1947 | func_bounds[i].low = | |
1948 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1949 | } | |
1950 | } | |
1951 | ||
1952 | do | |
1953 | { | |
1954 | for (i = 0; (i < sals.nelts && !found); i++) | |
1955 | found = (fp->pc >= func_bounds[i].low && | |
1956 | fp->pc < func_bounds[i].high); | |
1957 | if (!found) | |
1958 | { | |
1959 | level = 1; | |
1960 | fp = find_relative_frame (fp, &level); | |
1961 | } | |
1962 | } | |
1963 | while (!found && level == 0); | |
1964 | ||
1965 | if (func_bounds) | |
b8c9b27d | 1966 | xfree (func_bounds); |
c906108c SS |
1967 | |
1968 | if (!found) | |
1969 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1970 | else if (fp != selected_frame) | |
1971 | select_and_print_frame (fp, level); | |
1972 | } | |
1973 | ||
1974 | /* Gets the language of the current frame. */ | |
1975 | ||
1976 | enum language | |
fba45db2 | 1977 | get_frame_language (void) |
c906108c SS |
1978 | { |
1979 | register struct symtab *s; | |
1980 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1981 | |
c906108c SS |
1982 | if (selected_frame) |
1983 | { | |
c5aa993b | 1984 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1985 | if (s) |
1986 | flang = s->language; | |
1987 | else | |
1988 | flang = language_unknown; | |
1989 | } | |
1990 | else | |
1991 | flang = language_unknown; | |
1992 | ||
1993 | return flang; | |
1994 | } | |
1995 | \f | |
1996 | void | |
fba45db2 | 1997 | _initialize_stack (void) |
c906108c | 1998 | { |
c5aa993b | 1999 | #if 0 |
c906108c SS |
2000 | backtrace_limit = 30; |
2001 | #endif | |
2002 | ||
2003 | add_com ("return", class_stack, return_command, | |
2004 | "Make selected stack frame return to its caller.\n\ | |
2005 | Control remains in the debugger, but when you continue\n\ | |
2006 | execution will resume in the frame above the one now selected.\n\ | |
2007 | If an argument is given, it is an expression for the value to return."); | |
2008 | ||
2009 | add_com ("up", class_stack, up_command, | |
2010 | "Select and print stack frame that called this one.\n\ | |
2011 | An argument says how many frames up to go."); | |
2012 | add_com ("up-silently", class_support, up_silently_command, | |
2013 | "Same as the `up' command, but does not print anything.\n\ | |
2014 | This is useful in command scripts."); | |
2015 | ||
2016 | add_com ("down", class_stack, down_command, | |
2017 | "Select and print stack frame called by this one.\n\ | |
2018 | An argument says how many frames down to go."); | |
2019 | add_com_alias ("do", "down", class_stack, 1); | |
2020 | add_com_alias ("dow", "down", class_stack, 1); | |
2021 | add_com ("down-silently", class_support, down_silently_command, | |
2022 | "Same as the `down' command, but does not print anything.\n\ | |
2023 | This is useful in command scripts."); | |
2024 | ||
2025 | add_com ("frame", class_stack, frame_command, | |
2026 | "Select and print a stack frame.\n\ | |
2027 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
2028 | An argument specifies the frame to select.\n\ | |
2029 | It can be a stack frame number or the address of the frame.\n\ | |
2030 | With argument, nothing is printed if input is coming from\n\ | |
2031 | a command file or a user-defined command."); | |
2032 | ||
2033 | add_com_alias ("f", "frame", class_stack, 1); | |
2034 | ||
2035 | if (xdb_commands) | |
2036 | { | |
c5aa993b JM |
2037 | add_com ("L", class_stack, current_frame_command, |
2038 | "Print the current stack frame.\n"); | |
c906108c SS |
2039 | add_com_alias ("V", "frame", class_stack, 1); |
2040 | } | |
2041 | add_com ("select-frame", class_stack, select_frame_command, | |
2042 | "Select a stack frame without printing anything.\n\ | |
2043 | An argument specifies the frame to select.\n\ | |
2044 | It can be a stack frame number or the address of the frame.\n"); | |
2045 | ||
2046 | add_com ("backtrace", class_stack, backtrace_command, | |
2047 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
2048 | With a negative argument, print outermost -COUNT frames.\n\ | |
2049 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
2050 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
2051 | if (xdb_commands) | |
2052 | { | |
2053 | add_com_alias ("t", "backtrace", class_stack, 0); | |
2054 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 2055 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
2056 | and the values of the local variables.\n\ |
2057 | With a negative argument, print outermost -COUNT frames.\n\ | |
2058 | Usage: T <count>\n"); | |
2059 | } | |
2060 | ||
2061 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2062 | add_info ("stack", backtrace_command, | |
2063 | "Backtrace of the stack, or innermost COUNT frames."); | |
2064 | add_info_alias ("s", "stack", 1); | |
2065 | add_info ("frame", frame_info, | |
2066 | "All about selected stack frame, or frame at ADDR."); | |
2067 | add_info_alias ("f", "frame", 1); | |
2068 | add_info ("locals", locals_info, | |
2069 | "Local variables of current stack frame."); | |
2070 | add_info ("args", args_info, | |
2071 | "Argument variables of current stack frame."); | |
2072 | if (xdb_commands) | |
c5aa993b JM |
2073 | add_com ("l", class_info, args_plus_locals_info, |
2074 | "Argument and local variables of current stack frame."); | |
c906108c SS |
2075 | |
2076 | if (dbx_commands) | |
c5aa993b JM |
2077 | add_com ("func", class_stack, func_command, |
2078 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
2079 | |
2080 | add_info ("catch", catch_info, | |
2081 | "Exceptions that can be caught in the current stack frame."); | |
2082 | ||
2083 | #if 0 | |
c5aa993b JM |
2084 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2085 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2086 | &setlist); |
2087 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2088 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2089 | #endif |
2090 | } |