Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software | |
5 | Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include <ctype.h> | |
25 | #include "defs.h" | |
26 | #include "gdb_string.h" | |
27 | #include "value.h" | |
28 | #include "symtab.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "language.h" | |
32 | #include "frame.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "gdbcore.h" | |
35 | #include "target.h" | |
36 | #include "breakpoint.h" | |
37 | #include "demangle.h" | |
38 | #include "inferior.h" | |
39 | #include "annotate.h" | |
8b93c638 | 40 | #include "ui-out.h" |
c906108c SS |
41 | |
42 | /* Prototypes for exported functions. */ | |
43 | ||
a14ed312 | 44 | void args_info (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | void locals_info (char *, int); |
c906108c | 47 | |
507f3c78 | 48 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 49 | |
a14ed312 | 50 | void _initialize_stack (void); |
c906108c SS |
51 | |
52 | /* Prototypes for local functions. */ | |
53 | ||
a14ed312 | 54 | static void return_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void down_command (char *, int); |
c906108c | 57 | |
a14ed312 | 58 | static void down_silently_base (char *); |
c906108c | 59 | |
a14ed312 | 60 | static void down_silently_command (char *, int); |
c906108c | 61 | |
a14ed312 | 62 | static void up_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void up_silently_base (char *); |
c906108c | 65 | |
a14ed312 | 66 | static void up_silently_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | void frame_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void current_frame_command (char *, int); |
7a292a7a | 71 | |
a14ed312 | 72 | static void select_frame_command (char *, int); |
c906108c | 73 | |
d9fcf2fb | 74 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 75 | |
a14ed312 | 76 | static void catch_info (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void args_plus_locals_info (char *, int); |
c906108c | 79 | |
d9fcf2fb JM |
80 | static void print_frame_label_vars (struct frame_info *, int, |
81 | struct ui_file *); | |
c906108c | 82 | |
d9fcf2fb JM |
83 | static void print_frame_local_vars (struct frame_info *, int, |
84 | struct ui_file *); | |
c906108c | 85 | |
d9fcf2fb JM |
86 | static int print_block_frame_labels (struct block *, int *, |
87 | struct ui_file *); | |
c906108c | 88 | |
d9fcf2fb JM |
89 | static int print_block_frame_locals (struct block *, |
90 | struct frame_info *, | |
91 | int, | |
92 | struct ui_file *); | |
c906108c | 93 | |
c5394b80 JM |
94 | static void print_frame (struct frame_info *fi, |
95 | int level, | |
96 | int source, | |
97 | int args, | |
98 | struct symtab_and_line sal); | |
99 | ||
a14ed312 | 100 | static void print_frame_info_base (struct frame_info *, int, int, int); |
c5aa993b | 101 | |
a14ed312 | 102 | static void print_stack_frame_base (struct frame_info *, int, int); |
c906108c | 103 | |
a14ed312 | 104 | static void backtrace_command (char *, int); |
c906108c | 105 | |
a14ed312 | 106 | struct frame_info *parse_frame_specification (char *); |
c906108c | 107 | |
a14ed312 | 108 | static void frame_info (char *, int); |
c906108c SS |
109 | |
110 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
c906108c SS |
111 | extern int lines_to_list; /* # of lines "list" command shows by default */ |
112 | ||
113 | /* The "selected" stack frame is used by default for local and arg access. | |
114 | May be zero, for no selected frame. */ | |
115 | ||
116 | struct frame_info *selected_frame; | |
117 | ||
118 | /* Level of the selected frame: | |
119 | 0 for innermost, 1 for its caller, ... | |
120 | or -1 for frame specified by address with no defined level. */ | |
121 | ||
122 | int selected_frame_level; | |
123 | ||
124 | /* Zero means do things normally; we are interacting directly with the | |
125 | user. One means print the full filename and linenumber when a | |
126 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
127 | parse. Two means print similar annotations, but in many more | |
128 | cases and in a slightly different syntax. */ | |
129 | ||
130 | int annotation_level = 0; | |
c906108c | 131 | \f |
c5aa993b JM |
132 | |
133 | struct print_stack_frame_args | |
134 | { | |
135 | struct frame_info *fi; | |
136 | int level; | |
137 | int source; | |
138 | int args; | |
139 | }; | |
c906108c | 140 | |
a14ed312 | 141 | static int print_stack_frame_base_stub (char *); |
c906108c SS |
142 | |
143 | /* Show and print the frame arguments. | |
144 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 145 | static int show_and_print_stack_frame_stub (void *args); |
c906108c | 146 | static int |
fba45db2 | 147 | show_and_print_stack_frame_stub (void *args) |
c906108c | 148 | { |
c5aa993b | 149 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 150 | |
c906108c SS |
151 | print_frame_info (p->fi, p->level, p->source, p->args); |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | /* Show or print the frame arguments. | |
157 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 158 | static int print_stack_frame_stub (void *args); |
c906108c | 159 | static int |
fba45db2 | 160 | print_stack_frame_stub (void *args) |
c906108c | 161 | { |
c5aa993b | 162 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 163 | |
37767e42 | 164 | print_frame_info_base (p->fi, p->level, p->source, p->args); |
c906108c SS |
165 | return 0; |
166 | } | |
167 | ||
168 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
169 | and LEVEL should be its level in the stack (or -1 for level not | |
170 | defined). */ | |
171 | ||
172 | /* Pass the args the way catch_errors wants them. */ | |
173 | static int | |
fba45db2 | 174 | print_stack_frame_base_stub (char *args) |
c906108c | 175 | { |
c5aa993b | 176 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
177 | |
178 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
179 | return 0; | |
180 | } | |
181 | ||
182 | /* print the frame arguments to the terminal. | |
183 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 184 | static int print_only_stack_frame_stub (void *); |
c906108c | 185 | static int |
fba45db2 | 186 | print_only_stack_frame_stub (void *args) |
c906108c | 187 | { |
c5aa993b | 188 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c SS |
189 | |
190 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
195 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
196 | This prints the level, the function executing, the arguments, | |
197 | and the file name and line number. | |
198 | If the pc is not at the beginning of the source line, | |
199 | the actual pc is printed at the beginning. | |
200 | ||
201 | If SOURCE is 1, print the source line as well. | |
202 | If SOURCE is -1, print ONLY the source line. */ | |
203 | ||
204 | static void | |
fba45db2 | 205 | print_stack_frame_base (struct frame_info *fi, int level, int source) |
c906108c SS |
206 | { |
207 | struct print_stack_frame_args args; | |
208 | ||
209 | args.fi = fi; | |
210 | args.level = level; | |
211 | args.source = source; | |
212 | args.args = 1; | |
213 | ||
7a292a7a | 214 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
215 | } |
216 | ||
217 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
218 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
219 | This prints the level, the function executing, the arguments, | |
220 | and the file name and line number. | |
221 | If the pc is not at the beginning of the source line, | |
222 | the actual pc is printed at the beginning. | |
223 | ||
224 | If SOURCE is 1, print the source line as well. | |
225 | If SOURCE is -1, print ONLY the source line. */ | |
226 | ||
227 | void | |
fba45db2 | 228 | show_and_print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
229 | { |
230 | struct print_stack_frame_args args; | |
231 | ||
232 | args.fi = fi; | |
233 | args.level = level; | |
234 | args.source = source; | |
235 | args.args = 1; | |
236 | ||
7a292a7a | 237 | catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
238 | } |
239 | ||
240 | ||
241 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
242 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
243 | This prints the level, the function executing, the arguments, | |
244 | and the file name and line number. | |
245 | If the pc is not at the beginning of the source line, | |
246 | the actual pc is printed at the beginning. | |
247 | ||
248 | If SOURCE is 1, print the source line as well. | |
249 | If SOURCE is -1, print ONLY the source line. */ | |
250 | ||
251 | void | |
fba45db2 | 252 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
253 | { |
254 | struct print_stack_frame_args args; | |
255 | ||
256 | args.fi = fi; | |
257 | args.level = level; | |
258 | args.source = source; | |
259 | args.args = 1; | |
260 | ||
c5aa993b | 261 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
c906108c SS |
262 | } |
263 | ||
264 | /* Print a stack frame briefly. FRAME_INFI should be the frame info | |
265 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
266 | This prints the level, the function executing, the arguments, | |
267 | and the file name and line number. | |
268 | If the pc is not at the beginning of the source line, | |
269 | the actual pc is printed at the beginning. | |
270 | ||
271 | If SOURCE is 1, print the source line as well. | |
272 | If SOURCE is -1, print ONLY the source line. */ | |
273 | ||
274 | void | |
fba45db2 | 275 | print_only_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
276 | { |
277 | struct print_stack_frame_args args; | |
278 | ||
279 | args.fi = fi; | |
280 | args.level = level; | |
281 | args.source = source; | |
282 | args.args = 1; | |
283 | ||
7a292a7a | 284 | catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL); |
c906108c SS |
285 | } |
286 | ||
c5aa993b JM |
287 | struct print_args_args |
288 | { | |
c906108c SS |
289 | struct symbol *func; |
290 | struct frame_info *fi; | |
d9fcf2fb | 291 | struct ui_file *stream; |
c906108c SS |
292 | }; |
293 | ||
a14ed312 | 294 | static int print_args_stub (PTR); |
c906108c SS |
295 | |
296 | /* Pass the args the way catch_errors wants them. */ | |
297 | ||
298 | static int | |
fba45db2 | 299 | print_args_stub (PTR args) |
c906108c SS |
300 | { |
301 | int numargs; | |
c5aa993b | 302 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 303 | |
392a587b | 304 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 305 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
306 | return 0; |
307 | } | |
308 | ||
309 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
310 | Used in "where" output, also used to emit breakpoint or step |
311 | messages. | |
312 | LEVEL is the level of the frame, or -1 if it is the | |
313 | innermost frame but we don't want to print the level. | |
314 | The meaning of the SOURCE argument is: | |
315 | SRC_LINE: Print only source line | |
316 | LOCATION: Print only location | |
317 | LOC_AND_SRC: Print location and source line. */ | |
c906108c SS |
318 | |
319 | static void | |
fba45db2 | 320 | print_frame_info_base (struct frame_info *fi, int level, int source, int args) |
c906108c SS |
321 | { |
322 | struct symtab_and_line sal; | |
c5394b80 JM |
323 | int source_print; |
324 | int location_print; | |
c906108c SS |
325 | |
326 | #if 0 | |
327 | char buf[MAX_REGISTER_RAW_SIZE]; | |
328 | CORE_ADDR sp; | |
329 | ||
330 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ | |
331 | ||
332 | /* Get the value of SP_REGNUM relative to the frame. */ | |
c5aa993b JM |
333 | get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL, |
334 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL); | |
c906108c SS |
335 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); |
336 | ||
337 | /* This is not a perfect test, because if a function alloca's some | |
338 | memory, puts some code there, and then jumps into it, then the test | |
339 | will succeed even though there is no call dummy. Probably best is | |
340 | to check for a bp_call_dummy breakpoint. */ | |
341 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) | |
342 | #else | |
343 | if (frame_in_dummy (fi)) | |
344 | #endif | |
345 | { | |
346 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
347 | ||
348 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 349 | to list for this frame. */ |
c906108c SS |
350 | if (level >= 0) |
351 | printf_filtered ("#%-2d ", level); | |
352 | annotate_function_call (); | |
353 | printf_filtered ("<function called from gdb>\n"); | |
354 | annotate_frame_end (); | |
355 | return; | |
356 | } | |
357 | if (fi->signal_handler_caller) | |
358 | { | |
359 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); | |
360 | ||
361 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 362 | to list for this frame. */ |
c906108c SS |
363 | if (level >= 0) |
364 | printf_filtered ("#%-2d ", level); | |
365 | annotate_signal_handler_caller (); | |
366 | printf_filtered ("<signal handler called>\n"); | |
367 | annotate_frame_end (); | |
368 | return; | |
369 | } | |
370 | ||
371 | /* If fi is not the innermost frame, that normally means that fi->pc | |
372 | points to *after* the call instruction, and we want to get the line | |
373 | containing the call, never the next line. But if the next frame is | |
374 | a signal_handler_caller or a dummy frame, then the next frame was | |
375 | not entered as the result of a call, and we want to get the line | |
376 | containing fi->pc. */ | |
377 | sal = | |
378 | find_pc_line (fi->pc, | |
379 | fi->next != NULL | |
380 | && !fi->next->signal_handler_caller | |
381 | && !frame_in_dummy (fi->next)); | |
382 | ||
c5394b80 JM |
383 | location_print = (source == LOCATION |
384 | || source == LOC_AND_ADDRESS | |
385 | || source == SRC_AND_LOC); | |
386 | ||
387 | if (location_print || !sal.symtab) | |
388 | print_frame (fi, level, source, args, sal); | |
389 | ||
390 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
391 | ||
392 | if (source_print && sal.symtab) | |
393 | { | |
394 | int done = 0; | |
395 | int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc); | |
396 | ||
397 | if (annotation_level) | |
398 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
399 | fi->pc); | |
400 | if (!done) | |
401 | { | |
ba4bbdcb | 402 | if (print_frame_info_listing_hook) |
76e42a4f MH |
403 | { |
404 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
405 | current_source_symtab = sal.symtab; | |
406 | } | |
ba4bbdcb | 407 | else |
c5394b80 | 408 | { |
ba4bbdcb KS |
409 | /* We used to do this earlier, but that is clearly |
410 | wrong. This function is used by many different | |
411 | parts of gdb, including normal_stop in infrun.c, | |
412 | which uses this to print out the current PC | |
413 | when we stepi/nexti into the middle of a source | |
414 | line. Only the command line really wants this | |
415 | behavior. Other UIs probably would like the | |
416 | ability to decide for themselves if it is desired. */ | |
417 | if (addressprint && mid_statement) | |
418 | { | |
ba4bbdcb KS |
419 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
420 | ui_out_text (uiout, "\t"); | |
ba4bbdcb KS |
421 | } |
422 | ||
423 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 424 | } |
c5394b80 JM |
425 | } |
426 | current_source_line = max (sal.line - lines_to_list / 2, 1); | |
427 | } | |
428 | ||
429 | if (source != 0) | |
430 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
431 | ||
432 | annotate_frame_end (); | |
433 | ||
434 | gdb_flush (gdb_stdout); | |
435 | } | |
436 | ||
437 | static void | |
438 | print_frame (struct frame_info *fi, | |
439 | int level, | |
440 | int source, | |
441 | int args, | |
442 | struct symtab_and_line sal) | |
443 | { | |
444 | struct symbol *func; | |
445 | register char *funname = 0; | |
446 | enum language funlang = language_unknown; | |
8b93c638 JM |
447 | struct ui_stream *stb; |
448 | struct cleanup *old_chain; | |
e6e0bfab | 449 | struct cleanup *list_chain; |
8b93c638 JM |
450 | |
451 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 452 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 453 | |
c906108c SS |
454 | func = find_pc_function (fi->pc); |
455 | if (func) | |
456 | { | |
457 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
458 | function (when we are in the first function in a file which |
459 | is compiled without debugging symbols, the previous function | |
460 | is compiled with debugging symbols, and the "foo.o" symbol | |
461 | that is supposed to tell us where the file with debugging symbols | |
462 | ends has been truncated by ar because it is longer than 15 | |
463 | characters). This also occurs if the user uses asm() to create | |
464 | a function but not stabs for it (in a file compiled -g). | |
465 | ||
466 | So look in the minimal symbol tables as well, and if it comes | |
467 | up with a larger address for the function use that instead. | |
468 | I don't think this can ever cause any problems; there shouldn't | |
469 | be any minimal symbols in the middle of a function; if this is | |
470 | ever changed many parts of GDB will need to be changed (and we'll | |
471 | create a find_pc_minimal_function or some such). */ | |
c906108c SS |
472 | |
473 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
474 | if (msymbol != NULL | |
c5aa993b | 475 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
476 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
477 | { | |
478 | #if 0 | |
479 | /* There is no particular reason to think the line number | |
480 | information is wrong. Someone might have just put in | |
481 | a label with asm() but left the line numbers alone. */ | |
482 | /* In this case we have no way of knowing the source file | |
483 | and line number, so don't print them. */ | |
484 | sal.symtab = 0; | |
485 | #endif | |
486 | /* We also don't know anything about the function besides | |
487 | its address and name. */ | |
488 | func = 0; | |
489 | funname = SYMBOL_NAME (msymbol); | |
490 | funlang = SYMBOL_LANGUAGE (msymbol); | |
491 | } | |
492 | else | |
493 | { | |
c5394b80 JM |
494 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
495 | demangled name that we already have stored in the symbol | |
496 | table, but we stored a version with DMGL_PARAMS turned | |
497 | on, and here we don't want to display parameters. So call | |
498 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
499 | that printf_symbol_filtered() will again try to demangle | |
500 | the name on the fly, but the issue is that if | |
501 | cplus_demangle() fails here, it'll fail there too. So we | |
502 | want to catch the failure ("demangled==NULL" case below) | |
503 | here, while we still have our hands on the function | |
504 | symbol.) */ | |
c5aa993b | 505 | char *demangled; |
c906108c SS |
506 | funname = SYMBOL_NAME (func); |
507 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
508 | if (funlang == language_cplus) |
509 | { | |
510 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
511 | if (demangled == NULL) | |
c5394b80 JM |
512 | /* If the demangler fails, try the demangled name from |
513 | the symbol table. This'll have parameters, but | |
514 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
515 | funname = SYMBOL_SOURCE_NAME (func); |
516 | } | |
c906108c SS |
517 | } |
518 | } | |
519 | else | |
520 | { | |
521 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
522 | if (msymbol != NULL) | |
523 | { | |
524 | funname = SYMBOL_NAME (msymbol); | |
525 | funlang = SYMBOL_LANGUAGE (msymbol); | |
526 | } | |
527 | } | |
528 | ||
c5394b80 JM |
529 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
530 | ||
666547aa | 531 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
532 | |
533 | if (level >= 0) | |
8b93c638 | 534 | { |
8b93c638 JM |
535 | ui_out_text (uiout, "#"); |
536 | ui_out_field_fmt (uiout, "level", "%-2d", level); | |
537 | ui_out_spaces (uiout, 1); | |
8b93c638 | 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 | ui_out_field_core_addr (uiout, "addr", fi->pc); |
544 | annotate_frame_address_end (); | |
545 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
546 | } |
547 | annotate_frame_function_name (); | |
8b93c638 JM |
548 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
549 | DMGL_ANSI); | |
550 | ui_out_field_stream (uiout, "func", stb); | |
551 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
552 | annotate_frame_args (); |
553 | ||
8b93c638 | 554 | ui_out_text (uiout, " ("); |
c5394b80 | 555 | if (args) |
c906108c | 556 | { |
c5394b80 | 557 | struct print_args_args args; |
d493eb33 | 558 | struct cleanup *args_list_chain; |
c5394b80 JM |
559 | args.fi = fi; |
560 | args.func = func; | |
561 | args.stream = gdb_stdout; | |
68c81b54 | 562 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 563 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
564 | /* FIXME: args must be a list. If one argument is a string it will |
565 | have " that will not be properly escaped. */ | |
666547aa | 566 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 567 | do_cleanups (args_list_chain); |
c5394b80 JM |
568 | QUIT; |
569 | } | |
8b93c638 | 570 | ui_out_text (uiout, ")"); |
c5394b80 JM |
571 | if (sal.symtab && sal.symtab->filename) |
572 | { | |
573 | annotate_frame_source_begin (); | |
8b93c638 JM |
574 | ui_out_wrap_hint (uiout, " "); |
575 | ui_out_text (uiout, " at "); | |
576 | annotate_frame_source_file (); | |
577 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
578 | annotate_frame_source_file_end (); | |
579 | ui_out_text (uiout, ":"); | |
580 | annotate_frame_source_line (); | |
581 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
582 | annotate_frame_source_end (); |
583 | } | |
c906108c | 584 | |
c5394b80 JM |
585 | #ifdef PC_SOLIB |
586 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 587 | { |
c5394b80 JM |
588 | char *lib = PC_SOLIB (fi->pc); |
589 | if (lib) | |
c906108c | 590 | { |
c5394b80 | 591 | annotate_frame_where (); |
8b93c638 JM |
592 | ui_out_wrap_hint (uiout, " "); |
593 | ui_out_text (uiout, " from "); | |
594 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 595 | } |
c906108c | 596 | } |
c5394b80 | 597 | #endif /* PC_SOLIB */ |
e514a9d6 | 598 | |
666547aa | 599 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 600 | do_cleanups (list_chain); |
8b93c638 JM |
601 | ui_out_text (uiout, "\n"); |
602 | do_cleanups (old_chain); | |
c906108c SS |
603 | } |
604 | \f | |
605 | ||
c906108c SS |
606 | /* Show or print the frame info. If this is the tui, it will be shown in |
607 | the source display */ | |
608 | void | |
fba45db2 KB |
609 | print_frame_info (struct frame_info *fi, register int level, int source, |
610 | int args) | |
c906108c | 611 | { |
37767e42 | 612 | print_frame_info_base (fi, level, source, args); |
c906108c SS |
613 | } |
614 | ||
615 | /* Show the frame info. If this is the tui, it will be shown in | |
616 | the source display otherwise, nothing is done */ | |
617 | void | |
fba45db2 | 618 | show_stack_frame (struct frame_info *fi) |
c906108c | 619 | { |
c906108c | 620 | } |
c906108c | 621 | \f |
c5aa993b | 622 | |
c906108c SS |
623 | /* Read a frame specification in whatever the appropriate format is. |
624 | Call error() if the specification is in any way invalid (i.e. | |
625 | this function never returns NULL). */ | |
626 | ||
627 | struct frame_info * | |
fba45db2 | 628 | parse_frame_specification (char *frame_exp) |
c906108c SS |
629 | { |
630 | int numargs = 0; | |
631 | #define MAXARGS 4 | |
632 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 633 | int level; |
c5aa993b | 634 | |
c906108c SS |
635 | if (frame_exp) |
636 | { | |
637 | char *addr_string, *p; | |
638 | struct cleanup *tmp_cleanup; | |
639 | ||
c5aa993b JM |
640 | while (*frame_exp == ' ') |
641 | frame_exp++; | |
c906108c SS |
642 | |
643 | while (*frame_exp) | |
644 | { | |
645 | if (numargs > MAXARGS) | |
646 | error ("Too many args in frame specification"); | |
647 | /* Parse an argument. */ | |
c5aa993b | 648 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 649 | ; |
c5aa993b | 650 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
651 | |
652 | { | |
3d6d86c6 | 653 | struct value *vp; |
ec9a3449 | 654 | |
b8c9b27d | 655 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 656 | |
24285e3a | 657 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 658 | value_as_long and value_as_address rather than calling |
24285e3a DT |
659 | parse_and_eval_long and parse_and_eval_address because |
660 | of the issue of potential side effects from evaluating | |
661 | the expression. */ | |
ec9a3449 DT |
662 | vp = parse_and_eval (addr_string); |
663 | if (numargs == 0) | |
664 | level = value_as_long (vp); | |
665 | ||
1aa20aa8 | 666 | args[numargs++] = value_as_address (vp); |
c906108c SS |
667 | do_cleanups (tmp_cleanup); |
668 | } | |
669 | ||
670 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
671 | while (*p == ' ') |
672 | p++; | |
c906108c SS |
673 | frame_exp = p; |
674 | } | |
675 | } | |
676 | ||
677 | switch (numargs) | |
678 | { | |
679 | case 0: | |
680 | if (selected_frame == NULL) | |
681 | error ("No selected frame."); | |
682 | return selected_frame; | |
683 | /* NOTREACHED */ | |
684 | case 1: | |
685 | { | |
c906108c | 686 | struct frame_info *fid = |
c5aa993b | 687 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
688 | struct frame_info *tfid; |
689 | ||
690 | if (level == 0) | |
691 | /* find_relative_frame was successful */ | |
692 | return fid; | |
693 | ||
694 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
695 | take at least 2 addresses. It is important to detect this case | |
696 | here so that "frame 100" does not give a confusing error message | |
697 | like "frame specification requires two addresses". This of course | |
698 | does not solve the "frame 100" problem for machines on which | |
699 | a frame specification can be made with one address. To solve | |
700 | that, we need a new syntax for a specifying a frame by address. | |
701 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
702 | two args, etc.), but people might think that is too much typing, | |
703 | so I guess *0x23,0x45 would be a possible alternative (commas | |
704 | really should be used instead of spaces to delimit; using spaces | |
705 | normally works in an expression). */ | |
706 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 707 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
708 | #endif |
709 | ||
710 | /* If (s)he specifies the frame with an address, he deserves what | |
711 | (s)he gets. Still, give the highest one that matches. */ | |
712 | ||
713 | for (fid = get_current_frame (); | |
714 | fid && fid->frame != args[0]; | |
715 | fid = get_prev_frame (fid)) | |
716 | ; | |
717 | ||
718 | if (fid) | |
719 | while ((tfid = get_prev_frame (fid)) && | |
720 | (tfid->frame == args[0])) | |
721 | fid = tfid; | |
c5aa993b | 722 | |
c906108c SS |
723 | /* We couldn't identify the frame as an existing frame, but |
724 | perhaps we can create one with a single argument. */ | |
725 | } | |
726 | ||
c5aa993b | 727 | default: |
c906108c SS |
728 | #ifdef SETUP_ARBITRARY_FRAME |
729 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
730 | #else | |
731 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 732 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
733 | if (numargs == 1) |
734 | return create_new_frame (args[0], 0); | |
735 | error ("Too many args in frame specification"); | |
736 | #endif | |
737 | /* NOTREACHED */ | |
738 | } | |
739 | /* NOTREACHED */ | |
740 | } | |
741 | ||
742 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
743 | that if it is unsure about the answer, it returns 0 | |
744 | instead of guessing (this happens on the VAX and i960, for example). | |
745 | ||
746 | On most machines, we never have to guess about the args address, | |
747 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
748 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
749 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
750 | #endif | |
751 | ||
752 | /* Print verbosely the selected frame or the frame at address ADDR. | |
753 | This means absolutely all information in the frame is printed. */ | |
754 | ||
755 | static void | |
fba45db2 | 756 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
757 | { |
758 | struct frame_info *fi; | |
759 | struct symtab_and_line sal; | |
760 | struct symbol *func; | |
761 | struct symtab *s; | |
762 | struct frame_info *calling_frame_info; | |
763 | int i, count, numregs; | |
764 | char *funname = 0; | |
765 | enum language funlang = language_unknown; | |
766 | ||
767 | if (!target_has_stack) | |
768 | error ("No stack."); | |
769 | ||
770 | fi = parse_frame_specification (addr_exp); | |
771 | if (fi == NULL) | |
772 | error ("Invalid frame specified."); | |
773 | ||
774 | sal = find_pc_line (fi->pc, | |
775 | fi->next != NULL | |
776 | && !fi->next->signal_handler_caller | |
777 | && !frame_in_dummy (fi->next)); | |
778 | func = get_frame_function (fi); | |
c5aa993b | 779 | s = find_pc_symtab (fi->pc); |
c906108c SS |
780 | if (func) |
781 | { | |
782 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
783 | * the demangled name that we already have stored in | |
784 | * the symbol table, but we stored a version with | |
785 | * DMGL_PARAMS turned on, and here we don't want | |
786 | * to display parameters. So call the demangler again, | |
787 | * with DMGL_ANSI only. RT | |
788 | * (Yes, I know that printf_symbol_filtered() will | |
789 | * again try to demangle the name on the fly, but | |
790 | * the issue is that if cplus_demangle() fails here, | |
791 | * it'll fail there too. So we want to catch the failure | |
792 | * ("demangled==NULL" case below) here, while we still | |
793 | * have our hands on the function symbol.) | |
794 | */ | |
c5aa993b JM |
795 | char *demangled; |
796 | funname = SYMBOL_NAME (func); | |
797 | funlang = SYMBOL_LANGUAGE (func); | |
798 | if (funlang == language_cplus) | |
799 | { | |
800 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
801 | /* If the demangler fails, try the demangled name | |
802 | * from the symbol table. This'll have parameters, | |
803 | * but that's preferable to diplaying a mangled name. | |
804 | */ | |
805 | if (demangled == NULL) | |
806 | funname = SYMBOL_SOURCE_NAME (func); | |
807 | } | |
c906108c SS |
808 | } |
809 | else | |
810 | { | |
811 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
812 | if (msymbol != NULL) | |
813 | { | |
814 | funname = SYMBOL_NAME (msymbol); | |
815 | funlang = SYMBOL_LANGUAGE (msymbol); | |
816 | } | |
817 | } | |
818 | calling_frame_info = get_prev_frame (fi); | |
819 | ||
820 | if (!addr_exp && selected_frame_level >= 0) | |
821 | { | |
822 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); | |
823 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
824 | printf_filtered (":\n"); | |
825 | } | |
826 | else | |
827 | { | |
828 | printf_filtered ("Stack frame at "); | |
829 | print_address_numeric (fi->frame, 1, gdb_stdout); | |
830 | printf_filtered (":\n"); | |
831 | } | |
832 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
833 | print_address_numeric (fi->pc, 1, gdb_stdout); | |
834 | ||
835 | wrap_here (" "); | |
836 | if (funname) | |
837 | { | |
838 | printf_filtered (" in "); | |
839 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
840 | DMGL_ANSI | DMGL_PARAMS); | |
841 | } | |
842 | wrap_here (" "); | |
843 | if (sal.symtab) | |
844 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
845 | puts_filtered ("; "); | |
846 | wrap_here (" "); | |
847 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
848 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); | |
849 | printf_filtered ("\n"); | |
850 | ||
851 | { | |
392a587b JM |
852 | int frameless; |
853 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
854 | if (frameless) |
855 | printf_filtered (" (FRAMELESS),"); | |
856 | } | |
857 | ||
858 | if (calling_frame_info) | |
859 | { | |
860 | printf_filtered (" called by frame at "); | |
861 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); | |
862 | } | |
863 | if (fi->next && calling_frame_info) | |
864 | puts_filtered (","); | |
865 | wrap_here (" "); | |
866 | if (fi->next) | |
867 | { | |
868 | printf_filtered (" caller of frame at "); | |
869 | print_address_numeric (fi->next->frame, 1, gdb_stdout); | |
870 | } | |
871 | if (fi->next || calling_frame_info) | |
872 | puts_filtered ("\n"); | |
873 | if (s) | |
874 | printf_filtered (" source language %s.\n", language_str (s->language)); | |
875 | ||
876 | #ifdef PRINT_EXTRA_FRAME_INFO | |
877 | PRINT_EXTRA_FRAME_INFO (fi); | |
878 | #endif | |
879 | ||
880 | { | |
881 | /* Address of the argument list for this frame, or 0. */ | |
882 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
883 | /* Number of args for this frame, or -1 if unknown. */ | |
884 | int numargs; | |
885 | ||
886 | if (arg_list == 0) | |
887 | printf_filtered (" Arglist at unknown address.\n"); | |
888 | else | |
889 | { | |
890 | printf_filtered (" Arglist at "); | |
891 | print_address_numeric (arg_list, 1, gdb_stdout); | |
892 | printf_filtered (","); | |
893 | ||
392a587b | 894 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
895 | if (numargs < 0) |
896 | puts_filtered (" args: "); | |
897 | else if (numargs == 0) | |
898 | puts_filtered (" no args."); | |
899 | else if (numargs == 1) | |
900 | puts_filtered (" 1 arg: "); | |
901 | else | |
902 | printf_filtered (" %d args: ", numargs); | |
903 | print_frame_args (func, fi, numargs, gdb_stdout); | |
904 | puts_filtered ("\n"); | |
905 | } | |
906 | } | |
907 | { | |
908 | /* Address of the local variables for this frame, or 0. */ | |
909 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
910 | ||
911 | if (arg_list == 0) | |
912 | printf_filtered (" Locals at unknown address,"); | |
913 | else | |
914 | { | |
915 | printf_filtered (" Locals at "); | |
916 | print_address_numeric (arg_list, 1, gdb_stdout); | |
917 | printf_filtered (","); | |
918 | } | |
919 | } | |
920 | ||
921 | FRAME_INIT_SAVED_REGS (fi); | |
922 | if (fi->saved_regs != NULL) | |
923 | { | |
924 | /* The sp is special; what's returned isn't the save address, but | |
c5aa993b | 925 | actually the value of the previous frame's sp. */ |
c906108c SS |
926 | printf_filtered (" Previous frame's sp is "); |
927 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
928 | printf_filtered ("\n"); | |
929 | count = 0; | |
64485362 | 930 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
931 | for (i = 0; i < numregs; i++) |
932 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
933 | { | |
934 | if (count == 0) | |
935 | puts_filtered (" Saved registers:\n "); | |
936 | else | |
937 | puts_filtered (","); | |
938 | wrap_here (" "); | |
939 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
940 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
941 | count++; | |
942 | } | |
943 | if (count) | |
944 | puts_filtered ("\n"); | |
945 | } | |
946 | else | |
947 | { | |
948 | /* We could get some information about saved registers by | |
c5aa993b JM |
949 | calling get_saved_register on each register. Which info goes |
950 | with which frame is necessarily lost, however, and I suspect | |
951 | that the users don't care whether they get the info. */ | |
c906108c SS |
952 | puts_filtered ("\n"); |
953 | } | |
954 | } | |
955 | ||
956 | #if 0 | |
957 | /* Set a limit on the number of frames printed by default in a | |
958 | backtrace. */ | |
959 | ||
960 | static int backtrace_limit; | |
961 | ||
962 | static void | |
fba45db2 | 963 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 964 | { |
bb518678 | 965 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
966 | |
967 | if (count < 0) | |
968 | error ("Negative argument not meaningful as backtrace limit."); | |
969 | ||
970 | backtrace_limit = count; | |
971 | } | |
972 | ||
973 | static void | |
fba45db2 | 974 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
975 | { |
976 | if (arg) | |
977 | error ("\"Info backtrace-limit\" takes no arguments."); | |
978 | ||
979 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
980 | } | |
981 | #endif | |
982 | ||
983 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
984 | ||
a14ed312 KB |
985 | static void backtrace_command_1 (char *count_exp, int show_locals, |
986 | int from_tty); | |
c906108c | 987 | static void |
fba45db2 | 988 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
989 | { |
990 | struct frame_info *fi; | |
991 | register int count; | |
992 | register int i; | |
993 | register struct frame_info *trailing; | |
994 | register int trailing_level; | |
995 | ||
996 | if (!target_has_stack) | |
997 | error ("No stack."); | |
998 | ||
999 | /* The following code must do two things. First, it must | |
1000 | set the variable TRAILING to the frame from which we should start | |
1001 | printing. Second, it must set the variable count to the number | |
1002 | of frames which we should print, or -1 if all of them. */ | |
1003 | trailing = get_current_frame (); | |
d082b2bb AC |
1004 | |
1005 | /* The target can be in a state where there is no valid frames | |
1006 | (e.g., just connected). */ | |
1007 | if (trailing == NULL) | |
1008 | error ("No stack."); | |
1009 | ||
c906108c SS |
1010 | trailing_level = 0; |
1011 | if (count_exp) | |
1012 | { | |
bb518678 | 1013 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1014 | if (count < 0) |
1015 | { | |
1016 | struct frame_info *current; | |
1017 | ||
1018 | count = -count; | |
1019 | ||
1020 | current = trailing; | |
1021 | while (current && count--) | |
1022 | { | |
1023 | QUIT; | |
1024 | current = get_prev_frame (current); | |
1025 | } | |
c5aa993b | 1026 | |
c906108c SS |
1027 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
1028 | will be COUNT below it. */ | |
1029 | while (current) | |
1030 | { | |
1031 | QUIT; | |
1032 | trailing = get_prev_frame (trailing); | |
1033 | current = get_prev_frame (current); | |
1034 | trailing_level++; | |
1035 | } | |
c5aa993b | 1036 | |
c906108c SS |
1037 | count = -1; |
1038 | } | |
1039 | } | |
1040 | else | |
1041 | count = -1; | |
1042 | ||
1043 | if (info_verbose) | |
1044 | { | |
1045 | struct partial_symtab *ps; | |
c5aa993b | 1046 | |
c906108c | 1047 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
1048 | a separate pass so that "Reading in symbols for xxx" messages |
1049 | don't screw up the appearance of the backtrace. Also | |
1050 | if people have strong opinions against reading symbols for | |
1051 | backtrace this may have to be an option. */ | |
c906108c SS |
1052 | i = count; |
1053 | for (fi = trailing; | |
1054 | fi != NULL && i--; | |
1055 | fi = get_prev_frame (fi)) | |
1056 | { | |
1057 | QUIT; | |
1058 | ps = find_pc_psymtab (fi->pc); | |
1059 | if (ps) | |
1060 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | for (i = 0, fi = trailing; | |
1065 | fi && count--; | |
1066 | i++, fi = get_prev_frame (fi)) | |
1067 | { | |
1068 | QUIT; | |
1069 | ||
1070 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1071 | means further attempts to backtrace would fail (on the other |
1072 | hand, perhaps the code does or could be fixed to make sure | |
1073 | the frame->prev field gets set to NULL in that case). */ | |
c906108c SS |
1074 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1075 | if (show_locals) | |
c5aa993b | 1076 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
1077 | } |
1078 | ||
1079 | /* If we've stopped before the end, mention that. */ | |
1080 | if (fi && from_tty) | |
1081 | printf_filtered ("(More stack frames follow...)\n"); | |
1082 | } | |
1083 | ||
1084 | static void | |
fba45db2 | 1085 | backtrace_command (char *arg, int from_tty) |
c906108c | 1086 | { |
c5aa993b JM |
1087 | struct cleanup *old_chain = (struct cleanup *) NULL; |
1088 | char **argv = (char **) NULL; | |
1089 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1090 | char *argPtr = arg; | |
c906108c | 1091 | |
c5aa993b | 1092 | if (arg != (char *) NULL) |
c906108c SS |
1093 | { |
1094 | int i; | |
1095 | ||
c5aa993b | 1096 | argv = buildargv (arg); |
7a292a7a | 1097 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1098 | argc = 0; |
c5aa993b JM |
1099 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1100 | { | |
745b8ca0 | 1101 | unsigned int j; |
c5aa993b JM |
1102 | |
1103 | for (j = 0; (j < strlen (argv[i])); j++) | |
1104 | argv[i][j] = tolower (argv[i][j]); | |
1105 | ||
1106 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1107 | argIndicatingFullTrace = argc; | |
1108 | else | |
1109 | { | |
1110 | argc++; | |
1111 | totArgLen += strlen (argv[i]); | |
1112 | } | |
1113 | } | |
c906108c SS |
1114 | totArgLen += argc; |
1115 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1116 | { |
1117 | if (totArgLen > 0) | |
1118 | { | |
1119 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1120 | if (!argPtr) | |
1121 | nomem (0); | |
1122 | else | |
1123 | { | |
1124 | memset (argPtr, 0, totArgLen + 1); | |
1125 | for (i = 0; (i < (argc + 1)); i++) | |
1126 | { | |
1127 | if (i != argIndicatingFullTrace) | |
1128 | { | |
1129 | strcat (argPtr, argv[i]); | |
1130 | strcat (argPtr, " "); | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | else | |
1136 | argPtr = (char *) NULL; | |
1137 | } | |
c906108c SS |
1138 | } |
1139 | ||
1140 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1141 | ||
1142 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1143 | xfree (argPtr); |
c906108c SS |
1144 | |
1145 | if (old_chain) | |
c5aa993b | 1146 | do_cleanups (old_chain); |
c906108c SS |
1147 | } |
1148 | ||
a14ed312 | 1149 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1150 | static void |
fba45db2 | 1151 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1152 | { |
1153 | backtrace_command_1 (arg, 1, from_tty); | |
1154 | } | |
c906108c | 1155 | \f |
c5aa993b | 1156 | |
c906108c SS |
1157 | /* Print the local variables of a block B active in FRAME. |
1158 | Return 1 if any variables were printed; 0 otherwise. */ | |
1159 | ||
1160 | static int | |
fba45db2 KB |
1161 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1162 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1163 | { |
c906108c SS |
1164 | register int i, j; |
1165 | register struct symbol *sym; | |
1166 | register int values_printed = 0; | |
1167 | ||
e88c90f2 | 1168 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1169 | { |
c906108c SS |
1170 | switch (SYMBOL_CLASS (sym)) |
1171 | { | |
1172 | case LOC_LOCAL: | |
1173 | case LOC_REGISTER: | |
1174 | case LOC_STATIC: | |
1175 | case LOC_BASEREG: | |
1176 | values_printed = 1; | |
1177 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1178 | fputs_filtered ("\t", stream); |
c906108c SS |
1179 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1180 | fputs_filtered (" = ", stream); | |
1181 | print_variable_value (sym, fi, stream); | |
1182 | fprintf_filtered (stream, "\n"); | |
1183 | break; | |
1184 | ||
1185 | default: | |
1186 | /* Ignore symbols which are not locals. */ | |
1187 | break; | |
1188 | } | |
1189 | } | |
1190 | return values_printed; | |
1191 | } | |
1192 | ||
1193 | /* Same, but print labels. */ | |
1194 | ||
1195 | static int | |
fba45db2 KB |
1196 | print_block_frame_labels (struct block *b, int *have_default, |
1197 | register struct ui_file *stream) | |
c906108c | 1198 | { |
c906108c SS |
1199 | register int i; |
1200 | register struct symbol *sym; | |
1201 | register int values_printed = 0; | |
1202 | ||
e88c90f2 | 1203 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1204 | { |
c906108c SS |
1205 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1206 | { | |
1207 | if (*have_default) | |
1208 | continue; | |
1209 | *have_default = 1; | |
1210 | } | |
1211 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1212 | { | |
1213 | struct symtab_and_line sal; | |
1214 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1215 | values_printed = 1; | |
1216 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1217 | if (addressprint) | |
1218 | { | |
1219 | fprintf_filtered (stream, " "); | |
1220 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1221 | } | |
1222 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1223 | sal.symtab->filename, sal.line); | |
1224 | } | |
1225 | } | |
1226 | return values_printed; | |
1227 | } | |
1228 | ||
1229 | /* Print on STREAM all the local variables in frame FRAME, | |
1230 | including all the blocks active in that frame | |
1231 | at its current pc. | |
1232 | ||
1233 | Returns 1 if the job was done, | |
1234 | or 0 if nothing was printed because we have no info | |
1235 | on the function running in FRAME. */ | |
1236 | ||
1237 | static void | |
fba45db2 KB |
1238 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1239 | register struct ui_file *stream) | |
c906108c | 1240 | { |
ae767bfb | 1241 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1242 | register int values_printed = 0; |
1243 | ||
1244 | if (block == 0) | |
1245 | { | |
1246 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1247 | return; | |
1248 | } | |
c5aa993b | 1249 | |
c906108c SS |
1250 | while (block != 0) |
1251 | { | |
1252 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1253 | values_printed = 1; | |
1254 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1255 | Don't continue to its superblock, the block of |
1256 | per-file symbols. */ | |
c906108c SS |
1257 | if (BLOCK_FUNCTION (block)) |
1258 | break; | |
1259 | block = BLOCK_SUPERBLOCK (block); | |
1260 | } | |
1261 | ||
1262 | if (!values_printed) | |
1263 | { | |
1264 | fprintf_filtered (stream, "No locals.\n"); | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | /* Same, but print labels. */ | |
1269 | ||
1270 | static void | |
fba45db2 KB |
1271 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1272 | register struct ui_file *stream) | |
c906108c SS |
1273 | { |
1274 | register struct blockvector *bl; | |
ae767bfb | 1275 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1276 | register int values_printed = 0; |
1277 | int index, have_default = 0; | |
1278 | char *blocks_printed; | |
1279 | CORE_ADDR pc = fi->pc; | |
1280 | ||
1281 | if (block == 0) | |
1282 | { | |
1283 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1284 | return; | |
1285 | } | |
1286 | ||
1287 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1288 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1289 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1290 | ||
1291 | while (block != 0) | |
1292 | { | |
1293 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1294 | int last_index; | |
1295 | ||
1296 | if (bl != blockvector_for_pc (end, &index)) | |
1297 | error ("blockvector blotch"); | |
1298 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1299 | error ("blockvector botch"); | |
1300 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1301 | index += 1; | |
1302 | ||
1303 | /* Don't print out blocks that have gone by. */ | |
1304 | while (index < last_index | |
1305 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1306 | index++; | |
1307 | ||
1308 | while (index < last_index | |
1309 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1310 | { | |
1311 | if (blocks_printed[index] == 0) | |
1312 | { | |
1313 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1314 | values_printed = 1; | |
1315 | blocks_printed[index] = 1; | |
1316 | } | |
1317 | index++; | |
1318 | } | |
1319 | if (have_default) | |
1320 | return; | |
1321 | if (values_printed && this_level_only) | |
1322 | return; | |
1323 | ||
1324 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1325 | Don't continue to its superblock, the block of |
1326 | per-file symbols. */ | |
c906108c SS |
1327 | if (BLOCK_FUNCTION (block)) |
1328 | break; | |
1329 | block = BLOCK_SUPERBLOCK (block); | |
1330 | } | |
1331 | ||
1332 | if (!values_printed && !this_level_only) | |
1333 | { | |
1334 | fprintf_filtered (stream, "No catches.\n"); | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | /* ARGSUSED */ | |
1339 | void | |
fba45db2 | 1340 | locals_info (char *args, int from_tty) |
c906108c SS |
1341 | { |
1342 | if (!selected_frame) | |
1343 | error ("No frame selected."); | |
1344 | print_frame_local_vars (selected_frame, 0, gdb_stdout); | |
1345 | } | |
1346 | ||
1347 | static void | |
fba45db2 | 1348 | catch_info (char *ignore, int from_tty) |
c906108c | 1349 | { |
c5aa993b | 1350 | struct symtab_and_line *sal; |
c906108c | 1351 | |
c5aa993b | 1352 | /* Check for target support for exception handling */ |
c906108c SS |
1353 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1354 | if (sal) | |
1355 | { | |
1356 | /* Currently not handling this */ | |
1357 | /* Ideally, here we should interact with the C++ runtime | |
1358 | system to find the list of active handlers, etc. */ | |
1359 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1360 | #if 0 | |
c5aa993b JM |
1361 | if (!selected_frame) |
1362 | error ("No frame selected."); | |
c906108c SS |
1363 | #endif |
1364 | } | |
1365 | else | |
1366 | { | |
c5aa993b | 1367 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
c906108c | 1368 | if (!selected_frame) |
c5aa993b JM |
1369 | error ("No frame selected."); |
1370 | ||
c906108c SS |
1371 | print_frame_label_vars (selected_frame, 0, gdb_stdout); |
1372 | } | |
1373 | } | |
1374 | ||
1375 | static void | |
fba45db2 KB |
1376 | print_frame_arg_vars (register struct frame_info *fi, |
1377 | register struct ui_file *stream) | |
c906108c SS |
1378 | { |
1379 | struct symbol *func = get_frame_function (fi); | |
1380 | register struct block *b; | |
c906108c SS |
1381 | register int i; |
1382 | register struct symbol *sym, *sym2; | |
1383 | register int values_printed = 0; | |
1384 | ||
1385 | if (func == 0) | |
1386 | { | |
1387 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1388 | return; | |
1389 | } | |
1390 | ||
1391 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1392 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1393 | { |
c906108c SS |
1394 | switch (SYMBOL_CLASS (sym)) |
1395 | { | |
1396 | case LOC_ARG: | |
1397 | case LOC_LOCAL_ARG: | |
1398 | case LOC_REF_ARG: | |
1399 | case LOC_REGPARM: | |
1400 | case LOC_REGPARM_ADDR: | |
1401 | case LOC_BASEREG_ARG: | |
1402 | values_printed = 1; | |
1403 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1404 | fputs_filtered (" = ", stream); | |
1405 | ||
1406 | /* We have to look up the symbol because arguments can have | |
1407 | two entries (one a parameter, one a local) and the one we | |
1408 | want is the local, which lookup_symbol will find for us. | |
1409 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1410 | small structure and gcc2 when the argument type is float | |
1411 | and it is passed as a double and converted to float by | |
1412 | the prologue (in the latter case the type of the LOC_ARG | |
1413 | symbol is double and the type of the LOC_LOCAL symbol is | |
1414 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1415 | are not combined in symbol-reading. */ | |
1416 | ||
1417 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1418 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1419 | print_variable_value (sym2, fi, stream); |
1420 | fprintf_filtered (stream, "\n"); | |
1421 | break; | |
1422 | ||
1423 | default: | |
1424 | /* Don't worry about things which aren't arguments. */ | |
1425 | break; | |
1426 | } | |
1427 | } | |
c906108c SS |
1428 | if (!values_printed) |
1429 | { | |
1430 | fprintf_filtered (stream, "No arguments.\n"); | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | void | |
fba45db2 | 1435 | args_info (char *ignore, int from_tty) |
c906108c SS |
1436 | { |
1437 | if (!selected_frame) | |
1438 | error ("No frame selected."); | |
1439 | print_frame_arg_vars (selected_frame, gdb_stdout); | |
1440 | } | |
1441 | ||
1442 | ||
1443 | static void | |
fba45db2 | 1444 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1445 | { |
c5aa993b JM |
1446 | args_info (ignore, from_tty); |
1447 | locals_info (ignore, from_tty); | |
c906108c | 1448 | } |
c906108c | 1449 | \f |
c5aa993b | 1450 | |
c906108c SS |
1451 | /* Select frame FI, and note that its stack level is LEVEL. |
1452 | LEVEL may be -1 if an actual level number is not known. */ | |
1453 | ||
1454 | void | |
fba45db2 | 1455 | select_frame (struct frame_info *fi, int level) |
c906108c SS |
1456 | { |
1457 | register struct symtab *s; | |
1458 | ||
1459 | selected_frame = fi; | |
1460 | selected_frame_level = level; | |
7cc19214 AC |
1461 | /* FIXME: cagney/2002-04-05: It can't be this easy (and looking at |
1462 | the increasingly complex list of checkes, it wasn't)! GDB is | |
1463 | dragging around, and constantly updating, the global variable | |
1464 | selected_frame_level. Surely all that was needed was for the | |
1465 | level to be computed direct from the frame (by counting back to | |
1466 | the inner-most frame) or, as has been done here using a cached | |
1467 | value. For moment, check that the expected and the actual level | |
1468 | are consistent. If, after a few weeks, no one reports that this | |
1469 | assertion has failed, the global selected_frame_level and many | |
1470 | many parameters can all be deleted. */ | |
1471 | if (fi == NULL && level == -1) | |
1472 | /* Ok. The target is clearing the selected frame as part of a | |
1473 | cache flush. */ | |
1474 | ; | |
1475 | else if (fi != NULL && fi->level == level) | |
1476 | /* Ok. What you would expect. Level is redundant. */ | |
1477 | ; | |
1478 | else if (fi != NULL && level == -1) | |
1479 | /* Ok. See breakpoint.c. The watchpoint code changes the | |
1480 | selected frame to the frame that contains the watchpoint and | |
1481 | then, later changes it back to the old value. The -1 is used | |
1482 | as a marker so that the watchpoint code can easily detect that | |
1483 | things are not what they should be. Why the watchpoint code | |
1484 | can't mindlessly save/restore the selected frame I don't know, | |
1485 | hopefully it can be simplified that way. Hopefully the global | |
1486 | selected_frame can be replaced by a frame parameter, making | |
1487 | still more simplification possible. */ | |
1488 | ; | |
1489 | else | |
1490 | internal_error (__FILE__, __LINE__, | |
d8c0a2e7 AC |
1491 | "Conflicting frame levels fi->level=%d, level=%d", |
1492 | (fi ? fi->level : -1), | |
1493 | level); | |
c906108c SS |
1494 | if (selected_frame_level_changed_hook) |
1495 | selected_frame_level_changed_hook (level); | |
1496 | ||
1497 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1498 | source language of this frame, and switch to it if desired. */ | |
1499 | if (fi) | |
c5aa993b JM |
1500 | { |
1501 | s = find_pc_symtab (fi->pc); | |
1502 | if (s | |
1503 | && s->language != current_language->la_language | |
1504 | && s->language != language_unknown | |
1505 | && language_mode == language_mode_auto) | |
1506 | { | |
1507 | set_language (s->language); | |
1508 | } | |
c906108c | 1509 | } |
c906108c | 1510 | } |
c906108c | 1511 | \f |
c5aa993b | 1512 | |
c906108c SS |
1513 | /* Select frame FI, noting that its stack level is LEVEL. Also print |
1514 | the stack frame and show the source if this is the tui version. */ | |
1515 | void | |
fba45db2 | 1516 | select_and_print_frame (struct frame_info *fi, int level) |
c906108c | 1517 | { |
c5aa993b | 1518 | select_frame (fi, level); |
c906108c SS |
1519 | if (fi) |
1520 | { | |
c5aa993b | 1521 | print_stack_frame (fi, level, 1); |
c906108c SS |
1522 | } |
1523 | } | |
c906108c | 1524 | \f |
c5aa993b | 1525 | |
c906108c SS |
1526 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1527 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
1528 | ||
1529 | void | |
fba45db2 | 1530 | record_selected_frame (CORE_ADDR *frameaddrp, int *levelp) |
c906108c SS |
1531 | { |
1532 | *frameaddrp = selected_frame ? selected_frame->frame : 0; | |
1533 | *levelp = selected_frame_level; | |
1534 | } | |
1535 | ||
1536 | /* Return the symbol-block in which the selected frame is executing. | |
ae767bfb JB |
1537 | Can return zero under various legitimate circumstances. |
1538 | ||
1539 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1540 | code address within the block returned. We use this to decide | |
1541 | which macros are in scope. */ | |
c906108c SS |
1542 | |
1543 | struct block * | |
ae767bfb | 1544 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1545 | { |
1546 | if (!target_has_stack) | |
1547 | return 0; | |
1548 | ||
1549 | if (!selected_frame) | |
ae767bfb JB |
1550 | return get_current_block (addr_in_block); |
1551 | return get_frame_block (selected_frame, addr_in_block); | |
c906108c SS |
1552 | } |
1553 | ||
1554 | /* Find a frame a certain number of levels away from FRAME. | |
1555 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1556 | Positive means go to earlier frames (up); negative, the reverse. | |
1557 | The int that contains the number of levels is counted toward | |
1558 | zero as the frames for those levels are found. | |
1559 | If the top or bottom frame is reached, that frame is returned, | |
1560 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1561 | how much farther the original request asked to go. */ | |
1562 | ||
1563 | struct frame_info * | |
fba45db2 KB |
1564 | find_relative_frame (register struct frame_info *frame, |
1565 | register int *level_offset_ptr) | |
c906108c SS |
1566 | { |
1567 | register struct frame_info *prev; | |
1568 | register struct frame_info *frame1; | |
1569 | ||
1570 | /* Going up is simple: just do get_prev_frame enough times | |
1571 | or until initial frame is reached. */ | |
1572 | while (*level_offset_ptr > 0) | |
1573 | { | |
1574 | prev = get_prev_frame (frame); | |
1575 | if (prev == 0) | |
1576 | break; | |
1577 | (*level_offset_ptr)--; | |
1578 | frame = prev; | |
1579 | } | |
1580 | /* Going down is just as simple. */ | |
1581 | if (*level_offset_ptr < 0) | |
1582 | { | |
c5aa993b JM |
1583 | while (*level_offset_ptr < 0) |
1584 | { | |
1585 | frame1 = get_next_frame (frame); | |
1586 | if (!frame1) | |
1587 | break; | |
1588 | frame = frame1; | |
1589 | (*level_offset_ptr)++; | |
1590 | } | |
c906108c SS |
1591 | } |
1592 | return frame; | |
1593 | } | |
1594 | ||
1595 | /* The "select_frame" command. With no arg, NOP. | |
1596 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1597 | valid level. Otherwise, treat level_exp as an address expression | |
1598 | and select it. See parse_frame_specification for more info on proper | |
1599 | frame expressions. */ | |
1600 | ||
1601 | /* ARGSUSED */ | |
8b93c638 | 1602 | void |
fba45db2 | 1603 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1604 | { |
1605 | select_frame_command (level_exp, from_tty); | |
1606 | } | |
8926118c | 1607 | |
c906108c | 1608 | static void |
fba45db2 | 1609 | select_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1610 | { |
1611 | register struct frame_info *frame, *frame1; | |
1612 | unsigned int level = 0; | |
1613 | ||
1614 | if (!target_has_stack) | |
1615 | error ("No stack."); | |
1616 | ||
1617 | frame = parse_frame_specification (level_exp); | |
1618 | ||
1619 | /* Try to figure out what level this frame is. But if there is | |
1620 | no current stack, don't error out -- let the user set one. */ | |
1621 | frame1 = 0; | |
c5aa993b JM |
1622 | if (get_current_frame ()) |
1623 | { | |
1624 | for (frame1 = get_prev_frame (0); | |
1625 | frame1 && frame1 != frame; | |
1626 | frame1 = get_prev_frame (frame1)) | |
1627 | level++; | |
1628 | } | |
c906108c SS |
1629 | |
1630 | if (!frame1) | |
1631 | level = 0; | |
1632 | ||
1633 | select_frame (frame, level); | |
1634 | } | |
1635 | ||
1636 | /* The "frame" command. With no arg, print selected frame briefly. | |
1637 | With arg, behaves like select_frame and then prints the selected | |
1638 | frame. */ | |
1639 | ||
1640 | void | |
fba45db2 | 1641 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1642 | { |
1643 | select_frame_command (level_exp, from_tty); | |
1644 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1645 | } | |
1646 | ||
1647 | /* The XDB Compatibility command to print the current frame. */ | |
1648 | ||
7a292a7a | 1649 | static void |
fba45db2 | 1650 | current_frame_command (char *level_exp, int from_tty) |
c906108c SS |
1651 | { |
1652 | if (target_has_stack == 0 || selected_frame == 0) | |
c5aa993b | 1653 | error ("No stack."); |
7a292a7a SS |
1654 | print_only_stack_frame (selected_frame, selected_frame_level, 1); |
1655 | } | |
c906108c SS |
1656 | |
1657 | /* Select the frame up one or COUNT stack levels | |
1658 | from the previously selected frame, and print it briefly. */ | |
1659 | ||
1660 | /* ARGSUSED */ | |
1661 | static void | |
fba45db2 | 1662 | up_silently_base (char *count_exp) |
c906108c SS |
1663 | { |
1664 | register struct frame_info *fi; | |
1665 | int count = 1, count1; | |
1666 | if (count_exp) | |
bb518678 | 1667 | count = parse_and_eval_long (count_exp); |
c906108c | 1668 | count1 = count; |
c5aa993b | 1669 | |
c906108c SS |
1670 | if (target_has_stack == 0 || selected_frame == 0) |
1671 | error ("No stack."); | |
1672 | ||
1673 | fi = find_relative_frame (selected_frame, &count1); | |
1674 | if (count1 != 0 && count_exp == 0) | |
1675 | error ("Initial frame selected; you cannot go up."); | |
1676 | select_frame (fi, selected_frame_level + count - count1); | |
1677 | } | |
1678 | ||
1679 | static void | |
fba45db2 | 1680 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1681 | { |
c5aa993b | 1682 | up_silently_base (count_exp); |
c906108c SS |
1683 | } |
1684 | ||
1685 | static void | |
fba45db2 | 1686 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1687 | { |
1688 | up_silently_base (count_exp); | |
1689 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1690 | } | |
1691 | ||
1692 | /* Select the frame down one or COUNT stack levels | |
1693 | from the previously selected frame, and print it briefly. */ | |
1694 | ||
1695 | /* ARGSUSED */ | |
1696 | static void | |
fba45db2 | 1697 | down_silently_base (char *count_exp) |
c906108c SS |
1698 | { |
1699 | register struct frame_info *frame; | |
1700 | int count = -1, count1; | |
1701 | if (count_exp) | |
bb518678 | 1702 | count = -parse_and_eval_long (count_exp); |
c906108c | 1703 | count1 = count; |
c5aa993b | 1704 | |
c906108c SS |
1705 | if (target_has_stack == 0 || selected_frame == 0) |
1706 | error ("No stack."); | |
1707 | ||
1708 | frame = find_relative_frame (selected_frame, &count1); | |
1709 | if (count1 != 0 && count_exp == 0) | |
1710 | { | |
1711 | ||
1712 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1713 | means to really go down (and let me know if that is |
1714 | impossible), but "down 9999" can be used to mean go all the way | |
1715 | down without getting an error. */ | |
c906108c SS |
1716 | |
1717 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1718 | } | |
1719 | ||
1720 | select_frame (frame, selected_frame_level + count - count1); | |
1721 | } | |
1722 | ||
1723 | /* ARGSUSED */ | |
1724 | static void | |
fba45db2 | 1725 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1726 | { |
1727 | down_silently_base (count_exp); | |
c906108c SS |
1728 | } |
1729 | ||
1730 | static void | |
fba45db2 | 1731 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1732 | { |
1733 | down_silently_base (count_exp); | |
1734 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
1735 | } | |
1736 | \f | |
8b93c638 | 1737 | void |
fba45db2 | 1738 | return_command_wrapper (char *retval_exp, int from_tty) |
8b93c638 JM |
1739 | { |
1740 | return_command (retval_exp, from_tty); | |
1741 | } | |
8926118c | 1742 | |
c906108c | 1743 | static void |
fba45db2 | 1744 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1745 | { |
1746 | struct symbol *thisfun; | |
1747 | CORE_ADDR selected_frame_addr; | |
1748 | CORE_ADDR selected_frame_pc; | |
1749 | struct frame_info *frame; | |
3d6d86c6 | 1750 | struct value *return_value = NULL; |
c906108c SS |
1751 | |
1752 | if (selected_frame == NULL) | |
1753 | error ("No selected frame."); | |
1754 | thisfun = get_frame_function (selected_frame); | |
1755 | selected_frame_addr = FRAME_FP (selected_frame); | |
1756 | selected_frame_pc = selected_frame->pc; | |
1757 | ||
1758 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1759 | ||
1760 | if (retval_exp) | |
1761 | { | |
1762 | struct type *return_type = NULL; | |
1763 | ||
1764 | return_value = parse_and_eval (retval_exp); | |
1765 | ||
1766 | /* Cast return value to the return type of the function. */ | |
1767 | if (thisfun != NULL) | |
1768 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1769 | if (return_type == NULL) | |
1770 | return_type = builtin_type_int; | |
1771 | return_value = value_cast (return_type, return_value); | |
1772 | ||
1773 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1774 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1775 | if (VALUE_LAZY (return_value)) |
1776 | value_fetch_lazy (return_value); | |
1777 | } | |
1778 | ||
1779 | /* If interactive, require confirmation. */ | |
1780 | ||
1781 | if (from_tty) | |
1782 | { | |
1783 | if (thisfun != 0) | |
1784 | { | |
1785 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1786 | { | |
1787 | error ("Not confirmed."); | |
1788 | /* NOTREACHED */ | |
1789 | } | |
1790 | } | |
c5aa993b JM |
1791 | else if (!query ("Make selected stack frame return now? ")) |
1792 | error ("Not confirmed."); | |
c906108c SS |
1793 | } |
1794 | ||
1795 | /* Do the real work. Pop until the specified frame is current. We | |
1796 | use this method because the selected_frame is not valid after | |
1797 | a POP_FRAME. The pc comparison makes this work even if the | |
1798 | selected frame shares its fp with another frame. */ | |
1799 | ||
c5aa993b | 1800 | while (selected_frame_addr != (frame = get_current_frame ())->frame |
c906108c SS |
1801 | || selected_frame_pc != frame->pc) |
1802 | POP_FRAME; | |
1803 | ||
1804 | /* Then pop that frame. */ | |
1805 | ||
1806 | POP_FRAME; | |
1807 | ||
1808 | /* Compute the return value (if any) and store in the place | |
1809 | for return values. */ | |
1810 | ||
1811 | if (retval_exp) | |
1812 | set_return_value (return_value); | |
1813 | ||
1a2aab69 PS |
1814 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1815 | ||
1816 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), | |
1817 | FRAME_FP (get_current_frame ()))) | |
1818 | POP_FRAME; | |
1819 | ||
c906108c SS |
1820 | /* If interactive, print the frame that is now current. */ |
1821 | ||
1822 | if (from_tty) | |
1823 | frame_command ("0", 1); | |
1824 | else | |
1825 | select_frame_command ("0", 0); | |
1826 | } | |
1827 | ||
1828 | /* Sets the scope to input function name, provided that the | |
1829 | function is within the current stack frame */ | |
1830 | ||
1831 | struct function_bounds | |
1832 | { | |
1833 | CORE_ADDR low, high; | |
1834 | }; | |
1835 | ||
a14ed312 | 1836 | static void func_command (char *arg, int from_tty); |
c906108c | 1837 | static void |
fba45db2 | 1838 | func_command (char *arg, int from_tty) |
c906108c SS |
1839 | { |
1840 | struct frame_info *fp; | |
1841 | int found = 0; | |
1842 | struct symtabs_and_lines sals; | |
1843 | int i; | |
1844 | int level = 1; | |
1845 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1846 | ||
1847 | if (arg != (char *) NULL) | |
1848 | return; | |
1849 | ||
1850 | fp = parse_frame_specification ("0"); | |
1851 | sals = decode_line_spec (arg, 1); | |
1852 | func_bounds = (struct function_bounds *) xmalloc ( | |
1853 | sizeof (struct function_bounds) * sals.nelts); | |
1854 | for (i = 0; (i < sals.nelts && !found); i++) | |
1855 | { | |
1856 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1857 | find_pc_partial_function (sals.sals[i].pc, | |
1858 | (char **) NULL, | |
1859 | &func_bounds[i].low, | |
1860 | &func_bounds[i].high) == 0) | |
1861 | { | |
1862 | func_bounds[i].low = | |
1863 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | do | |
1868 | { | |
1869 | for (i = 0; (i < sals.nelts && !found); i++) | |
1870 | found = (fp->pc >= func_bounds[i].low && | |
1871 | fp->pc < func_bounds[i].high); | |
1872 | if (!found) | |
1873 | { | |
1874 | level = 1; | |
1875 | fp = find_relative_frame (fp, &level); | |
1876 | } | |
1877 | } | |
1878 | while (!found && level == 0); | |
1879 | ||
1880 | if (func_bounds) | |
b8c9b27d | 1881 | xfree (func_bounds); |
c906108c SS |
1882 | |
1883 | if (!found) | |
1884 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
1885 | else if (fp != selected_frame) | |
1886 | select_and_print_frame (fp, level); | |
1887 | } | |
1888 | ||
1889 | /* Gets the language of the current frame. */ | |
1890 | ||
1891 | enum language | |
fba45db2 | 1892 | get_frame_language (void) |
c906108c SS |
1893 | { |
1894 | register struct symtab *s; | |
1895 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1896 | |
c906108c SS |
1897 | if (selected_frame) |
1898 | { | |
c5aa993b | 1899 | s = find_pc_symtab (selected_frame->pc); |
c906108c SS |
1900 | if (s) |
1901 | flang = s->language; | |
1902 | else | |
1903 | flang = language_unknown; | |
1904 | } | |
1905 | else | |
1906 | flang = language_unknown; | |
1907 | ||
1908 | return flang; | |
1909 | } | |
1910 | \f | |
1911 | void | |
fba45db2 | 1912 | _initialize_stack (void) |
c906108c | 1913 | { |
c5aa993b | 1914 | #if 0 |
c906108c SS |
1915 | backtrace_limit = 30; |
1916 | #endif | |
1917 | ||
1918 | add_com ("return", class_stack, return_command, | |
1919 | "Make selected stack frame return to its caller.\n\ | |
1920 | Control remains in the debugger, but when you continue\n\ | |
1921 | execution will resume in the frame above the one now selected.\n\ | |
1922 | If an argument is given, it is an expression for the value to return."); | |
1923 | ||
1924 | add_com ("up", class_stack, up_command, | |
1925 | "Select and print stack frame that called this one.\n\ | |
1926 | An argument says how many frames up to go."); | |
1927 | add_com ("up-silently", class_support, up_silently_command, | |
1928 | "Same as the `up' command, but does not print anything.\n\ | |
1929 | This is useful in command scripts."); | |
1930 | ||
1931 | add_com ("down", class_stack, down_command, | |
1932 | "Select and print stack frame called by this one.\n\ | |
1933 | An argument says how many frames down to go."); | |
1934 | add_com_alias ("do", "down", class_stack, 1); | |
1935 | add_com_alias ("dow", "down", class_stack, 1); | |
1936 | add_com ("down-silently", class_support, down_silently_command, | |
1937 | "Same as the `down' command, but does not print anything.\n\ | |
1938 | This is useful in command scripts."); | |
1939 | ||
1940 | add_com ("frame", class_stack, frame_command, | |
1941 | "Select and print a stack frame.\n\ | |
1942 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1943 | An argument specifies the frame to select.\n\ | |
1944 | It can be a stack frame number or the address of the frame.\n\ | |
1945 | With argument, nothing is printed if input is coming from\n\ | |
1946 | a command file or a user-defined command."); | |
1947 | ||
1948 | add_com_alias ("f", "frame", class_stack, 1); | |
1949 | ||
1950 | if (xdb_commands) | |
1951 | { | |
c5aa993b JM |
1952 | add_com ("L", class_stack, current_frame_command, |
1953 | "Print the current stack frame.\n"); | |
c906108c SS |
1954 | add_com_alias ("V", "frame", class_stack, 1); |
1955 | } | |
1956 | add_com ("select-frame", class_stack, select_frame_command, | |
1957 | "Select a stack frame without printing anything.\n\ | |
1958 | An argument specifies the frame to select.\n\ | |
1959 | It can be a stack frame number or the address of the frame.\n"); | |
1960 | ||
1961 | add_com ("backtrace", class_stack, backtrace_command, | |
1962 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1963 | With a negative argument, print outermost -COUNT frames.\n\ | |
1964 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1965 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1966 | if (xdb_commands) | |
1967 | { | |
1968 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1969 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1970 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1971 | and the values of the local variables.\n\ |
1972 | With a negative argument, print outermost -COUNT frames.\n\ | |
1973 | Usage: T <count>\n"); | |
1974 | } | |
1975 | ||
1976 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1977 | add_info ("stack", backtrace_command, | |
1978 | "Backtrace of the stack, or innermost COUNT frames."); | |
1979 | add_info_alias ("s", "stack", 1); | |
1980 | add_info ("frame", frame_info, | |
1981 | "All about selected stack frame, or frame at ADDR."); | |
1982 | add_info_alias ("f", "frame", 1); | |
1983 | add_info ("locals", locals_info, | |
1984 | "Local variables of current stack frame."); | |
1985 | add_info ("args", args_info, | |
1986 | "Argument variables of current stack frame."); | |
1987 | if (xdb_commands) | |
c5aa993b JM |
1988 | add_com ("l", class_info, args_plus_locals_info, |
1989 | "Argument and local variables of current stack frame."); | |
c906108c SS |
1990 | |
1991 | if (dbx_commands) | |
c5aa993b JM |
1992 | add_com ("func", class_stack, func_command, |
1993 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
1994 | |
1995 | add_info ("catch", catch_info, | |
1996 | "Exceptions that can be caught in the current stack frame."); | |
1997 | ||
1998 | #if 0 | |
c5aa993b JM |
1999 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
2000 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
2001 | &setlist); |
2002 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 2003 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
2004 | #endif |
2005 | } |