Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
9ddf9aa9 | 2 | Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 1998 |
1a494973 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
cadbb07a | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
cadbb07a JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
cadbb07a | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
cadbb07a | 18 | along with this program; if not, write to the Free Software |
d0e0eca2 FF |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
20 | ||
65b07ddc | 21 | #include <ctype.h> |
bd5635a1 | 22 | #include "defs.h" |
d0e0eca2 | 23 | #include "gdb_string.h" |
b4fde6fa | 24 | #include "value.h" |
bd5635a1 | 25 | #include "symtab.h" |
b4fde6fa FF |
26 | #include "gdbtypes.h" |
27 | #include "expression.h" | |
28 | #include "language.h" | |
bd5635a1 RP |
29 | #include "frame.h" |
30 | #include "gdbcmd.h" | |
bd5635a1 RP |
31 | #include "gdbcore.h" |
32 | #include "target.h" | |
33 | #include "breakpoint.h" | |
b4fde6fa | 34 | #include "demangle.h" |
df2a1bd7 | 35 | #include "inferior.h" |
1a494973 | 36 | #include "annotate.h" |
9ddf9aa9 AC |
37 | #include "symfile.h" |
38 | #include "objfiles.h" | |
39 | ||
40 | /* Prototypes for exported functions. */ | |
41 | ||
42 | void args_info PARAMS ((char *, int)); | |
43 | ||
44 | void locals_info PARAMS ((char *, int)); | |
45 | ||
46 | void (*selected_frame_level_changed_hook) PARAMS ((int)); | |
47 | ||
48 | void _initialize_stack PARAMS ((void)); | |
49 | ||
50 | /* Prototypes for local functions. */ | |
b4fde6fa | 51 | |
1a494973 | 52 | static void return_command PARAMS ((char *, int)); |
b4fde6fa | 53 | |
1a494973 | 54 | static void down_command PARAMS ((char *, int)); |
b4fde6fa | 55 | |
65b07ddc DT |
56 | static void down_silently_base PARAMS ((char *)); |
57 | ||
1a494973 | 58 | static void down_silently_command PARAMS ((char *, int)); |
b4fde6fa | 59 | |
1a494973 | 60 | static void up_command PARAMS ((char *, int)); |
b4fde6fa | 61 | |
65b07ddc DT |
62 | static void up_silently_base PARAMS ((char *)); |
63 | ||
1a494973 | 64 | static void up_silently_command PARAMS ((char *, int)); |
b4fde6fa | 65 | |
65b07ddc | 66 | void frame_command PARAMS ((char *, int)); |
b4fde6fa | 67 | |
1a494973 | 68 | static void select_frame_command PARAMS ((char *, int)); |
b4fde6fa | 69 | |
1a494973 | 70 | static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *)); |
b4fde6fa | 71 | |
1a494973 | 72 | static void catch_info PARAMS ((char *, int)); |
b4fde6fa | 73 | |
65b07ddc DT |
74 | static void args_plus_locals_info PARAMS ((char *, int)); |
75 | ||
76 | static void print_frame_label_vars PARAMS ((struct frame_info *, | |
77 | int, | |
1a494973 | 78 | GDB_FILE *)); |
b4fde6fa | 79 | |
65b07ddc DT |
80 | static void print_frame_local_vars PARAMS ((struct frame_info *, |
81 | int, | |
82 | GDB_FILE *)); | |
b4fde6fa | 83 | |
1a494973 C |
84 | static int print_block_frame_labels PARAMS ((struct block *, int *, |
85 | GDB_FILE *)); | |
b4fde6fa | 86 | |
1a494973 C |
87 | static int print_block_frame_locals PARAMS ((struct block *, |
88 | struct frame_info *, | |
65b07ddc | 89 | int, |
1a494973 | 90 | GDB_FILE *)); |
b4fde6fa | 91 | |
65b07ddc DT |
92 | static void print_frame_info_base PARAMS ((struct frame_info *, int, int, int)); |
93 | ||
94 | static void print_stack_frame_base PARAMS ((struct frame_info *, int, int)); | |
95 | ||
1a494973 | 96 | static void backtrace_command PARAMS ((char *, int)); |
b4fde6fa | 97 | |
65b07ddc | 98 | struct frame_info *parse_frame_specification PARAMS ((char *)); |
b4fde6fa | 99 | |
1a494973 | 100 | static void frame_info PARAMS ((char *, int)); |
bd5635a1 RP |
101 | |
102 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
103 | extern int info_verbose; /* Verbosity of symbol reading msgs */ | |
d8ce1326 | 104 | extern int lines_to_list; /* # of lines "list" command shows by default */ |
bd5635a1 | 105 | |
b4fde6fa | 106 | /* The "selected" stack frame is used by default for local and arg access. |
bd5635a1 RP |
107 | May be zero, for no selected frame. */ |
108 | ||
1a494973 | 109 | struct frame_info *selected_frame; |
bd5635a1 RP |
110 | |
111 | /* Level of the selected frame: | |
112 | 0 for innermost, 1 for its caller, ... | |
113 | or -1 for frame specified by address with no defined level. */ | |
114 | ||
115 | int selected_frame_level; | |
116 | ||
d24c0599 JK |
117 | /* Zero means do things normally; we are interacting directly with the |
118 | user. One means print the full filename and linenumber when a | |
119 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
120 | parse. Two means print similar annotations, but in many more | |
121 | cases and in a slightly different syntax. */ | |
bd5635a1 | 122 | |
d24c0599 | 123 | int annotation_level = 0; |
bd5635a1 | 124 | |
bd5635a1 | 125 | \f |
199b2450 TL |
126 | struct print_stack_frame_args { |
127 | struct frame_info *fi; | |
128 | int level; | |
129 | int source; | |
130 | int args; | |
131 | }; | |
132 | ||
65b07ddc | 133 | static int print_stack_frame_base_stub PARAMS ((char *)); |
199b2450 | 134 | |
65b07ddc DT |
135 | /* Show and print the frame arguments. |
136 | Pass the args the way catch_errors wants them. */ | |
199b2450 | 137 | static int |
65b07ddc | 138 | show_and_print_stack_frame_stub (args) |
199b2450 TL |
139 | char *args; |
140 | { | |
141 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
1a494973 | 142 | |
65b07ddc DT |
143 | /* Reversed order of these so tuiDo() doesn't occur |
144 | * in the middle of "Breakpoint 1 ... [location]" printing = RT | |
145 | */ | |
146 | if (tui_version) | |
147 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
199b2450 | 148 | print_frame_info (p->fi, p->level, p->source, p->args); |
65b07ddc DT |
149 | |
150 | return 0; | |
151 | } | |
152 | ||
153 | /* Show or print the frame arguments. | |
154 | Pass the args the way catch_errors wants them. */ | |
155 | static int | |
156 | print_stack_frame_stub (args) | |
157 | char *args; | |
158 | { | |
159 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
160 | ||
161 | if (tui_version) | |
162 | print_frame_info (p->fi, p->level, p->source, p->args); | |
163 | else | |
164 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
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 defined). | |
170 | ||
171 | /* Pass the args the way catch_errors wants them. */ | |
172 | static int | |
173 | print_stack_frame_base_stub (args) | |
174 | char *args; | |
175 | { | |
176 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
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. */ | |
184 | static int | |
185 | print_only_stack_frame_stub (args) | |
186 | char *args; | |
187 | { | |
188 | struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; | |
189 | ||
190 | print_frame_info_base (p->fi, p->level, p->source, p->args); | |
199b2450 TL |
191 | return 0; |
192 | } | |
193 | ||
1a494973 | 194 | /* Print a stack frame briefly. FRAME_INFI should be the frame info |
bd5635a1 RP |
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 | ||
65b07ddc DT |
204 | static void |
205 | print_stack_frame_base (fi, level, source) | |
206 | struct frame_info *fi; | |
207 | int level; | |
208 | int source; | |
209 | { | |
210 | struct print_stack_frame_args args; | |
211 | ||
212 | args.fi = fi; | |
213 | args.level = level; | |
214 | args.source = source; | |
215 | args.args = 1; | |
216 | ||
217 | catch_errors (print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL); | |
218 | } | |
219 | ||
220 | /* Show and print a stack frame briefly. FRAME_INFI should be the frame info | |
221 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
222 | This prints the level, the function executing, the arguments, | |
223 | and the file name and line number. | |
224 | If the pc is not at the beginning of the source line, | |
225 | the actual pc is printed at the beginning. | |
226 | ||
227 | If SOURCE is 1, print the source line as well. | |
228 | If SOURCE is -1, print ONLY the source line. */ | |
229 | ||
230 | void | |
231 | show_and_print_stack_frame (fi, level, source) | |
232 | struct frame_info *fi; | |
233 | int level; | |
234 | int source; | |
235 | { | |
236 | struct print_stack_frame_args args; | |
237 | ||
238 | args.fi = fi; | |
239 | args.level = level; | |
240 | args.source = source; | |
241 | args.args = 1; | |
242 | ||
243 | catch_errors (show_and_print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL); | |
244 | } | |
245 | ||
246 | ||
247 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info | |
248 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
249 | This prints the level, the function executing, the arguments, | |
250 | and the file name and line number. | |
251 | If the pc is not at the beginning of the source line, | |
252 | the actual pc is printed at the beginning. | |
253 | ||
254 | If SOURCE is 1, print the source line as well. | |
255 | If SOURCE is -1, print ONLY the source line. */ | |
256 | ||
cadbb07a | 257 | void |
1a494973 C |
258 | print_stack_frame (fi, level, source) |
259 | struct frame_info *fi; | |
bd5635a1 RP |
260 | int level; |
261 | int source; | |
262 | { | |
199b2450 | 263 | struct print_stack_frame_args args; |
bd5635a1 | 264 | |
1a494973 | 265 | args.fi = fi; |
199b2450 TL |
266 | args.level = level; |
267 | args.source = source; | |
268 | args.args = 1; | |
bd5635a1 | 269 | |
9ddf9aa9 | 270 | catch_errors (print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL); |
bd5635a1 RP |
271 | } |
272 | ||
65b07ddc DT |
273 | /* Print a stack frame briefly. FRAME_INFI should be the frame info |
274 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
275 | This prints the level, the function executing, the arguments, | |
276 | and the file name and line number. | |
277 | If the pc is not at the beginning of the source line, | |
278 | the actual pc is printed at the beginning. | |
279 | ||
280 | If SOURCE is 1, print the source line as well. | |
281 | If SOURCE is -1, print ONLY the source line. */ | |
282 | ||
283 | void | |
284 | print_only_stack_frame (fi, level, source) | |
285 | struct frame_info *fi; | |
286 | int level; | |
287 | int source; | |
288 | { | |
289 | struct print_stack_frame_args args; | |
290 | ||
291 | args.fi = fi; | |
292 | args.level = level; | |
293 | args.source = source; | |
294 | args.args = 1; | |
295 | ||
296 | catch_errors (print_only_stack_frame_stub, | |
297 | (char *)&args, "", RETURN_MASK_ALL); | |
298 | } | |
299 | ||
c94e7e75 JK |
300 | struct print_args_args { |
301 | struct symbol *func; | |
302 | struct frame_info *fi; | |
303 | }; | |
304 | ||
305 | static int print_args_stub PARAMS ((char *)); | |
306 | ||
307 | /* Pass the args the way catch_errors wants them. */ | |
1a494973 | 308 | |
c94e7e75 JK |
309 | static int |
310 | print_args_stub (args) | |
311 | char *args; | |
312 | { | |
313 | int numargs; | |
314 | struct print_args_args *p = (struct print_args_args *)args; | |
1a494973 | 315 | |
c94e7e75 | 316 | FRAME_NUM_ARGS (numargs, (p->fi)); |
199b2450 | 317 | print_frame_args (p->func, p->fi, numargs, gdb_stdout); |
c94e7e75 JK |
318 | return 0; |
319 | } | |
320 | ||
65b07ddc DT |
321 | /* Print information about a frame for frame "fi" at level "level". |
322 | * Used in "where" output, also used to emit breakpoint or step messages. | |
323 | * LEVEL is the level of the frame, or -1 if it is the innermost frame | |
324 | * but we don't want to print the level. | |
325 | * The meaning of the SOURCE argument is: | |
326 | * -1: Print only source line | |
327 | * 0: Print only location | |
328 | * 1: Print location and source line | |
329 | */ | |
1a494973 | 330 | |
65b07ddc DT |
331 | static void |
332 | print_frame_info_base (fi, level, source, args) | |
bd5635a1 | 333 | struct frame_info *fi; |
65b07ddc | 334 | int level; |
bd5635a1 RP |
335 | int source; |
336 | int args; | |
337 | { | |
338 | struct symtab_and_line sal; | |
339 | struct symbol *func; | |
340 | register char *funname = 0; | |
bd5d07d9 | 341 | enum language funlang = language_unknown; |
1a494973 C |
342 | |
343 | #if 0 | |
dff84871 PS |
344 | char buf[MAX_REGISTER_RAW_SIZE]; |
345 | CORE_ADDR sp; | |
346 | ||
05052b63 JK |
347 | /* On the 68k, this spends too much time in m68k_find_saved_regs. */ |
348 | ||
dff84871 PS |
349 | /* Get the value of SP_REGNUM relative to the frame. */ |
350 | get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL, | |
351 | FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *)NULL); | |
352 | sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); | |
353 | ||
354 | /* This is not a perfect test, because if a function alloca's some | |
355 | memory, puts some code there, and then jumps into it, then the test | |
78cab901 JK |
356 | will succeed even though there is no call dummy. Probably best is |
357 | to check for a bp_call_dummy breakpoint. */ | |
dff84871 | 358 | if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) |
05052b63 JK |
359 | #else |
360 | if (frame_in_dummy (fi)) | |
361 | #endif | |
df2a1bd7 | 362 | { |
1a494973 C |
363 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
364 | ||
df2a1bd7 JK |
365 | /* Do this regardless of SOURCE because we don't have any source |
366 | to list for this frame. */ | |
367 | if (level >= 0) | |
368 | printf_filtered ("#%-2d ", level); | |
1a494973 | 369 | annotate_function_call (); |
df2a1bd7 | 370 | printf_filtered ("<function called from gdb>\n"); |
1a494973 | 371 | annotate_frame_end (); |
df2a1bd7 JK |
372 | return; |
373 | } | |
cee86be3 JK |
374 | if (fi->signal_handler_caller) |
375 | { | |
1a494973 C |
376 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
377 | ||
cee86be3 JK |
378 | /* Do this regardless of SOURCE because we don't have any source |
379 | to list for this frame. */ | |
380 | if (level >= 0) | |
381 | printf_filtered ("#%-2d ", level); | |
1a494973 | 382 | annotate_signal_handler_caller (); |
cee86be3 | 383 | printf_filtered ("<signal handler called>\n"); |
1a494973 | 384 | annotate_frame_end (); |
cee86be3 JK |
385 | return; |
386 | } | |
b4fde6fa | 387 | |
46c28185 RP |
388 | /* If fi is not the innermost frame, that normally means that fi->pc |
389 | points to *after* the call instruction, and we want to get the line | |
390 | containing the call, never the next line. But if the next frame is | |
f1de67d3 PS |
391 | a signal_handler_caller or a dummy frame, then the next frame was |
392 | not entered as the result of a call, and we want to get the line | |
393 | containing fi->pc. */ | |
46c28185 RP |
394 | sal = |
395 | find_pc_line (fi->pc, | |
f1de67d3 PS |
396 | fi->next != NULL |
397 | && !fi->next->signal_handler_caller | |
398 | && !frame_in_dummy (fi->next)); | |
46c28185 | 399 | |
bd5635a1 RP |
400 | func = find_pc_function (fi->pc); |
401 | if (func) | |
402 | { | |
403 | /* In certain pathological cases, the symtabs give the wrong | |
404 | function (when we are in the first function in a file which | |
405 | is compiled without debugging symbols, the previous function | |
406 | is compiled with debugging symbols, and the "foo.o" symbol | |
407 | that is supposed to tell us where the file with debugging symbols | |
408 | ends has been truncated by ar because it is longer than 15 | |
dff84871 PS |
409 | characters). This also occurs if the user uses asm() to create |
410 | a function but not stabs for it (in a file compiled -g). | |
bd5635a1 | 411 | |
b4fde6fa | 412 | So look in the minimal symbol tables as well, and if it comes |
bd5635a1 | 413 | up with a larger address for the function use that instead. |
b4fde6fa | 414 | I don't think this can ever cause any problems; there shouldn't |
dff84871 PS |
415 | be any minimal symbols in the middle of a function; if this is |
416 | ever changed many parts of GDB will need to be changed (and we'll | |
417 | create a find_pc_minimal_function or some such). */ | |
b4fde6fa FF |
418 | |
419 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); | |
420 | if (msymbol != NULL | |
bd5d07d9 | 421 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
bd5635a1 RP |
422 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
423 | { | |
d24c0599 JK |
424 | #if 0 |
425 | /* There is no particular reason to think the line number | |
426 | information is wrong. Someone might have just put in | |
427 | a label with asm() but left the line numbers alone. */ | |
bd5635a1 RP |
428 | /* In this case we have no way of knowing the source file |
429 | and line number, so don't print them. */ | |
430 | sal.symtab = 0; | |
d24c0599 | 431 | #endif |
bd5635a1 RP |
432 | /* We also don't know anything about the function besides |
433 | its address and name. */ | |
434 | func = 0; | |
bd5d07d9 FF |
435 | funname = SYMBOL_NAME (msymbol); |
436 | funlang = SYMBOL_LANGUAGE (msymbol); | |
bd5635a1 RP |
437 | } |
438 | else | |
bd5d07d9 | 439 | { |
65b07ddc DT |
440 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display |
441 | * the demangled name that we already have stored in | |
442 | * the symbol table, but we stored a version with | |
443 | * DMGL_PARAMS turned on, and here we don't want | |
444 | * to display parameters. So call the demangler again, | |
445 | * with DMGL_ANSI only. RT | |
446 | * (Yes, I know that printf_symbol_filtered() will | |
447 | * again try to demangle the name on the fly, but | |
448 | * the issue is that if cplus_demangle() fails here, | |
449 | * it'll fail there too. So we want to catch the failure | |
450 | * ("demangled==NULL" case below) here, while we still | |
451 | * have our hands on the function symbol.) | |
452 | */ | |
453 | char * demangled; | |
bd5d07d9 FF |
454 | funname = SYMBOL_NAME (func); |
455 | funlang = SYMBOL_LANGUAGE (func); | |
65b07ddc DT |
456 | if (funlang == language_cplus) { |
457 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
458 | if (demangled == NULL) | |
459 | /* If the demangler fails, try the demangled name | |
460 | * from the symbol table. This'll have parameters, | |
461 | * but that's preferable to diplaying a mangled name. | |
462 | */ | |
463 | funname = SYMBOL_SOURCE_NAME (func); | |
464 | } | |
bd5d07d9 | 465 | } |
bd5635a1 RP |
466 | } |
467 | else | |
468 | { | |
9ddf9aa9 | 469 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); |
b4fde6fa | 470 | if (msymbol != NULL) |
bd5d07d9 FF |
471 | { |
472 | funname = SYMBOL_NAME (msymbol); | |
473 | funlang = SYMBOL_LANGUAGE (msymbol); | |
474 | } | |
bd5635a1 RP |
475 | } |
476 | ||
477 | if (source >= 0 || !sal.symtab) | |
478 | { | |
1a494973 C |
479 | annotate_frame_begin (level == -1 ? 0 : level, fi->pc); |
480 | ||
bd5635a1 RP |
481 | if (level >= 0) |
482 | printf_filtered ("#%-2d ", level); | |
483 | if (addressprint) | |
484 | if (fi->pc != sal.pc || !sal.symtab) | |
833e0d94 | 485 | { |
1a494973 | 486 | annotate_frame_address (); |
d24c0599 | 487 | print_address_numeric (fi->pc, 1, gdb_stdout); |
1a494973 | 488 | annotate_frame_address_end (); |
833e0d94 JK |
489 | printf_filtered (" in "); |
490 | } | |
1a494973 | 491 | annotate_frame_function_name (); |
199b2450 | 492 | fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang, |
05052b63 | 493 | DMGL_ANSI); |
bd5635a1 | 494 | wrap_here (" "); |
1a494973 | 495 | annotate_frame_args (); |
199b2450 | 496 | fputs_filtered (" (", gdb_stdout); |
bd5635a1 RP |
497 | if (args) |
498 | { | |
c94e7e75 JK |
499 | struct print_args_args args; |
500 | args.fi = fi; | |
501 | args.func = func; | |
9ddf9aa9 AC |
502 | catch_errors (print_args_stub, (char *)&args, "", RETURN_MASK_ALL); |
503 | QUIT; | |
bd5635a1 RP |
504 | } |
505 | printf_filtered (")"); | |
506 | if (sal.symtab && sal.symtab->filename) | |
507 | { | |
1a494973 | 508 | annotate_frame_source_begin (); |
bd5635a1 | 509 | wrap_here (" "); |
1a494973 C |
510 | printf_filtered (" at "); |
511 | annotate_frame_source_file (); | |
512 | printf_filtered ("%s", sal.symtab->filename); | |
513 | annotate_frame_source_file_end (); | |
514 | printf_filtered (":"); | |
515 | annotate_frame_source_line (); | |
516 | printf_filtered ("%d", sal.line); | |
517 | annotate_frame_source_end (); | |
bd5635a1 | 518 | } |
b4fde6fa FF |
519 | |
520 | #ifdef PC_LOAD_SEGMENT | |
521 | /* If we couldn't print out function name but if can figure out what | |
522 | load segment this pc value is from, at least print out some info | |
523 | about its load segment. */ | |
1a494973 C |
524 | if (!funname) |
525 | { | |
526 | annotate_frame_where (); | |
527 | wrap_here (" "); | |
528 | printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc)); | |
529 | } | |
d0e0eca2 FF |
530 | #endif |
531 | #ifdef PC_SOLIB | |
65b07ddc | 532 | if (!funname || (!sal.symtab || !sal.symtab->filename)) |
d0e0eca2 FF |
533 | { |
534 | char *lib = PC_SOLIB (fi->pc); | |
535 | if (lib) | |
536 | { | |
537 | annotate_frame_where (); | |
538 | wrap_here (" "); | |
539 | printf_filtered (" from %s", lib); | |
540 | } | |
541 | } | |
b4fde6fa | 542 | #endif |
bd5635a1 RP |
543 | printf_filtered ("\n"); |
544 | } | |
545 | ||
546 | if ((source != 0) && sal.symtab) | |
547 | { | |
548 | int done = 0; | |
549 | int mid_statement = source < 0 && fi->pc != sal.pc; | |
d24c0599 | 550 | if (annotation_level) |
c94e7e75 JK |
551 | done = identify_source_line (sal.symtab, sal.line, mid_statement, |
552 | fi->pc); | |
bd5635a1 RP |
553 | if (!done) |
554 | { | |
65b07ddc | 555 | if (addressprint && mid_statement && !tui_version) |
833e0d94 | 556 | { |
d24c0599 | 557 | print_address_numeric (fi->pc, 1, gdb_stdout); |
833e0d94 JK |
558 | printf_filtered ("\t"); |
559 | } | |
1a494973 C |
560 | if (print_frame_info_listing_hook) |
561 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); | |
65b07ddc | 562 | else if (!tui_version) |
1a494973 | 563 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); |
bd5635a1 | 564 | } |
cadbb07a | 565 | current_source_line = max (sal.line - lines_to_list/2, 1); |
bd5635a1 RP |
566 | } |
567 | if (source != 0) | |
568 | set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); | |
569 | ||
1a494973 C |
570 | annotate_frame_end (); |
571 | ||
199b2450 | 572 | gdb_flush (gdb_stdout); |
bd5635a1 | 573 | } |
65b07ddc DT |
574 | \f |
575 | ||
576 | void | |
577 | stack_publish_stopped_with_no_frame() | |
578 | { | |
579 | TUIDO(((TuiOpaqueFuncPtr)tuiUpdateOnEnd)); | |
580 | ||
581 | return; | |
582 | } | |
bd5635a1 | 583 | |
65b07ddc DT |
584 | /* Show or print the frame info. If this is the tui, it will be shown in |
585 | the source display */ | |
586 | void | |
587 | print_frame_info(fi, level, source, args) | |
588 | struct frame_info *fi; | |
589 | register int level; | |
590 | int source; | |
591 | int args; | |
592 | { | |
593 | if (!tui_version) | |
594 | print_frame_info_base(fi, level, source, args); | |
595 | else | |
596 | { | |
597 | if (fi && (frame_in_dummy(fi) || fi->signal_handler_caller)) | |
598 | print_frame_info_base(fi, level, source, args); | |
599 | else | |
600 | { | |
601 | TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
606 | /* Show the frame info. If this is the tui, it will be shown in | |
607 | the source display otherwise, nothing is done */ | |
608 | void | |
609 | show_stack_frame(fi) | |
610 | struct frame_info *fi; | |
611 | { | |
612 | TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); | |
613 | } | |
614 | ||
615 | \f | |
1a494973 C |
616 | /* Read a frame specification in whatever the appropriate format is. |
617 | Call error() if the specification is in any way invalid (i.e. | |
618 | this function never returns NULL). */ | |
619 | ||
65b07ddc | 620 | struct frame_info * |
bd5635a1 RP |
621 | parse_frame_specification (frame_exp) |
622 | char *frame_exp; | |
623 | { | |
624 | int numargs = 0; | |
bd5d07d9 | 625 | #define MAXARGS 4 |
78cab901 | 626 | CORE_ADDR args[MAXARGS]; |
bd5635a1 RP |
627 | |
628 | if (frame_exp) | |
629 | { | |
630 | char *addr_string, *p; | |
631 | struct cleanup *tmp_cleanup; | |
632 | ||
633 | while (*frame_exp == ' ') frame_exp++; | |
bd5635a1 | 634 | |
bd5d07d9 | 635 | while (*frame_exp) |
bd5635a1 | 636 | { |
bd5d07d9 FF |
637 | if (numargs > MAXARGS) |
638 | error ("Too many args in frame specification"); | |
639 | /* Parse an argument. */ | |
640 | for (p = frame_exp; *p && *p != ' '; p++) | |
641 | ; | |
bd5635a1 RP |
642 | addr_string = savestring(frame_exp, p - frame_exp); |
643 | ||
644 | { | |
645 | tmp_cleanup = make_cleanup (free, addr_string); | |
bd5d07d9 | 646 | args[numargs++] = parse_and_eval_address (addr_string); |
bd5635a1 RP |
647 | do_cleanups (tmp_cleanup); |
648 | } | |
649 | ||
bd5d07d9 | 650 | /* Skip spaces, move to possible next arg. */ |
bd5635a1 | 651 | while (*p == ' ') p++; |
bd5d07d9 | 652 | frame_exp = p; |
bd5635a1 RP |
653 | } |
654 | } | |
655 | ||
656 | switch (numargs) | |
657 | { | |
658 | case 0: | |
777bef06 JK |
659 | if (selected_frame == NULL) |
660 | error ("No selected frame."); | |
bd5635a1 RP |
661 | return selected_frame; |
662 | /* NOTREACHED */ | |
663 | case 1: | |
664 | { | |
bd5d07d9 | 665 | int level = args[0]; |
1a494973 C |
666 | struct frame_info *fid = |
667 | find_relative_frame (get_current_frame (), &level); | |
668 | struct frame_info *tfid; | |
bd5635a1 RP |
669 | |
670 | if (level == 0) | |
671 | /* find_relative_frame was successful */ | |
672 | return fid; | |
673 | ||
d24c0599 JK |
674 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications |
675 | take at least 2 addresses. It is important to detect this case | |
676 | here so that "frame 100" does not give a confusing error message | |
677 | like "frame specification requires two addresses". This of course | |
678 | does not solve the "frame 100" problem for machines on which | |
679 | a frame specification can be made with one address. To solve | |
680 | that, we need a new syntax for a specifying a frame by address. | |
681 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
682 | two args, etc.), but people might think that is too much typing, | |
683 | so I guess *0x23,0x45 would be a possible alternative (commas | |
684 | really should be used instead of spaces to delimit; using spaces | |
685 | normally works in an expression). */ | |
686 | #ifdef SETUP_ARBITRARY_FRAME | |
687 | error ("No frame %d", args[0]); | |
688 | #endif | |
689 | ||
bd5635a1 RP |
690 | /* If (s)he specifies the frame with an address, he deserves what |
691 | (s)he gets. Still, give the highest one that matches. */ | |
692 | ||
693 | for (fid = get_current_frame (); | |
1a494973 | 694 | fid && fid->frame != args[0]; |
bd5635a1 RP |
695 | fid = get_prev_frame (fid)) |
696 | ; | |
697 | ||
698 | if (fid) | |
699 | while ((tfid = get_prev_frame (fid)) && | |
1a494973 | 700 | (tfid->frame == args[0])) |
bd5635a1 RP |
701 | fid = tfid; |
702 | ||
bd5d07d9 | 703 | /* We couldn't identify the frame as an existing frame, but |
d24c0599 | 704 | perhaps we can create one with a single argument. */ |
bd5635a1 | 705 | } |
bd5d07d9 FF |
706 | |
707 | default: | |
708 | #ifdef SETUP_ARBITRARY_FRAME | |
709 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
bd5635a1 | 710 | #else |
bd5d07d9 FF |
711 | /* Usual case. Do it here rather than have everyone supply |
712 | a SETUP_ARBITRARY_FRAME that does this. */ | |
713 | if (numargs == 1) | |
714 | return create_new_frame (args[0], 0); | |
715 | error ("Too many args in frame specification"); | |
bd5635a1 RP |
716 | #endif |
717 | /* NOTREACHED */ | |
718 | } | |
bd5635a1 RP |
719 | /* NOTREACHED */ |
720 | } | |
721 | ||
722 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
723 | that if it is unsure about the answer, it returns 0 | |
724 | instead of guessing (this happens on the VAX and i960, for example). | |
725 | ||
726 | On most machines, we never have to guess about the args address, | |
727 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
728 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
729 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
730 | #endif | |
731 | ||
732 | /* Print verbosely the selected frame or the frame at address ADDR. | |
733 | This means absolutely all information in the frame is printed. */ | |
734 | ||
735 | static void | |
b4fde6fa | 736 | frame_info (addr_exp, from_tty) |
bd5635a1 | 737 | char *addr_exp; |
b4fde6fa | 738 | int from_tty; |
bd5635a1 | 739 | { |
bd5635a1 | 740 | struct frame_info *fi; |
bd5635a1 RP |
741 | struct symtab_and_line sal; |
742 | struct symbol *func; | |
89e0bbcd | 743 | struct symtab *s; |
1a494973 C |
744 | struct frame_info *calling_frame_info; |
745 | int i, count, numregs; | |
bd5635a1 | 746 | char *funname = 0; |
bd5d07d9 | 747 | enum language funlang = language_unknown; |
bd5635a1 RP |
748 | |
749 | if (!target_has_stack) | |
6fe90fc8 | 750 | error ("No stack."); |
bd5635a1 | 751 | |
1a494973 C |
752 | fi = parse_frame_specification (addr_exp); |
753 | if (fi == NULL) | |
bd5635a1 RP |
754 | error ("Invalid frame specified."); |
755 | ||
dff84871 | 756 | sal = find_pc_line (fi->pc, |
f1de67d3 PS |
757 | fi->next != NULL |
758 | && !fi->next->signal_handler_caller | |
759 | && !frame_in_dummy (fi->next)); | |
1a494973 | 760 | func = get_frame_function (fi); |
89e0bbcd | 761 | s = find_pc_symtab(fi->pc); |
bd5635a1 | 762 | if (func) |
bd5d07d9 | 763 | { |
65b07ddc DT |
764 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display |
765 | * the demangled name that we already have stored in | |
766 | * the symbol table, but we stored a version with | |
767 | * DMGL_PARAMS turned on, and here we don't want | |
768 | * to display parameters. So call the demangler again, | |
769 | * with DMGL_ANSI only. RT | |
770 | * (Yes, I know that printf_symbol_filtered() will | |
771 | * again try to demangle the name on the fly, but | |
772 | * the issue is that if cplus_demangle() fails here, | |
773 | * it'll fail there too. So we want to catch the failure | |
774 | * ("demangled==NULL" case below) here, while we still | |
775 | * have our hands on the function symbol.) | |
776 | */ | |
777 | char * demangled; | |
778 | funname = SYMBOL_NAME (func); | |
779 | funlang = SYMBOL_LANGUAGE (func); | |
780 | if (funlang == language_cplus) | |
781 | { | |
782 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
783 | /* If the demangler fails, try the demangled name | |
784 | * from the symbol table. This'll have parameters, | |
785 | * but that's preferable to diplaying a mangled name. | |
786 | */ | |
787 | if (demangled == NULL) | |
788 | funname = SYMBOL_SOURCE_NAME (func); | |
789 | } | |
bd5d07d9 | 790 | } |
bd5635a1 RP |
791 | else |
792 | { | |
b4fde6fa FF |
793 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); |
794 | if (msymbol != NULL) | |
bd5d07d9 FF |
795 | { |
796 | funname = SYMBOL_NAME (msymbol); | |
797 | funlang = SYMBOL_LANGUAGE (msymbol); | |
798 | } | |
bd5635a1 | 799 | } |
1a494973 | 800 | calling_frame_info = get_prev_frame (fi); |
bd5635a1 | 801 | |
833e0d94 JK |
802 | if (!addr_exp && selected_frame_level >= 0) |
803 | { | |
5e678752 | 804 | printf_filtered ("Stack level %d, frame at ", selected_frame_level); |
1a494973 | 805 | print_address_numeric (fi->frame, 1, gdb_stdout); |
833e0d94 JK |
806 | printf_filtered (":\n"); |
807 | } | |
808 | else | |
809 | { | |
810 | printf_filtered ("Stack frame at "); | |
1a494973 | 811 | print_address_numeric (fi->frame, 1, gdb_stdout); |
833e0d94 JK |
812 | printf_filtered (":\n"); |
813 | } | |
9ddf9aa9 | 814 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); |
d24c0599 | 815 | print_address_numeric (fi->pc, 1, gdb_stdout); |
bd5635a1 RP |
816 | |
817 | wrap_here (" "); | |
818 | if (funname) | |
b0077123 JG |
819 | { |
820 | printf_filtered (" in "); | |
199b2450 | 821 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, |
5e81259d | 822 | DMGL_ANSI | DMGL_PARAMS); |
b0077123 | 823 | } |
bd5635a1 RP |
824 | wrap_here (" "); |
825 | if (sal.symtab) | |
826 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
827 | puts_filtered ("; "); | |
828 | wrap_here (" "); | |
9ddf9aa9 | 829 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); |
1a494973 | 830 | print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout); |
833e0d94 | 831 | printf_filtered ("\n"); |
b4fde6fa FF |
832 | |
833 | { | |
834 | int frameless = 0; | |
835 | #ifdef FRAMELESS_FUNCTION_INVOCATION | |
836 | FRAMELESS_FUNCTION_INVOCATION (fi, frameless); | |
837 | #endif | |
838 | if (frameless) | |
839 | printf_filtered (" (FRAMELESS),"); | |
840 | } | |
841 | ||
1a494973 | 842 | if (calling_frame_info) |
833e0d94 JK |
843 | { |
844 | printf_filtered (" called by frame at "); | |
1a494973 | 845 | print_address_numeric (calling_frame_info->frame, 1, gdb_stdout); |
833e0d94 | 846 | } |
1a494973 | 847 | if (fi->next && calling_frame_info) |
bd5635a1 RP |
848 | puts_filtered (","); |
849 | wrap_here (" "); | |
23a8e291 | 850 | if (fi->next) |
833e0d94 JK |
851 | { |
852 | printf_filtered (" caller of frame at "); | |
d24c0599 | 853 | print_address_numeric (fi->next->frame, 1, gdb_stdout); |
833e0d94 | 854 | } |
1a494973 | 855 | if (fi->next || calling_frame_info) |
bd5635a1 | 856 | puts_filtered ("\n"); |
89e0bbcd | 857 | if (s) |
833e0d94 | 858 | printf_filtered (" source language %s.\n", language_str (s->language)); |
bd5635a1 | 859 | |
bd5d07d9 FF |
860 | #ifdef PRINT_EXTRA_FRAME_INFO |
861 | PRINT_EXTRA_FRAME_INFO (fi); | |
862 | #endif | |
863 | ||
bd5635a1 RP |
864 | { |
865 | /* Address of the argument list for this frame, or 0. */ | |
866 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
867 | /* Number of args for this frame, or -1 if unknown. */ | |
868 | int numargs; | |
869 | ||
870 | if (arg_list == 0) | |
833e0d94 | 871 | printf_filtered (" Arglist at unknown address.\n"); |
bd5635a1 RP |
872 | else |
873 | { | |
833e0d94 | 874 | printf_filtered (" Arglist at "); |
d24c0599 | 875 | print_address_numeric (arg_list, 1, gdb_stdout); |
833e0d94 | 876 | printf_filtered (","); |
bd5635a1 RP |
877 | |
878 | FRAME_NUM_ARGS (numargs, fi); | |
879 | if (numargs < 0) | |
880 | puts_filtered (" args: "); | |
881 | else if (numargs == 0) | |
882 | puts_filtered (" no args."); | |
883 | else if (numargs == 1) | |
884 | puts_filtered (" 1 arg: "); | |
885 | else | |
886 | printf_filtered (" %d args: ", numargs); | |
199b2450 | 887 | print_frame_args (func, fi, numargs, gdb_stdout); |
bd5635a1 RP |
888 | puts_filtered ("\n"); |
889 | } | |
890 | } | |
b4fde6fa FF |
891 | { |
892 | /* Address of the local variables for this frame, or 0. */ | |
893 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
894 | ||
895 | if (arg_list == 0) | |
833e0d94 | 896 | printf_filtered (" Locals at unknown address,"); |
b4fde6fa | 897 | else |
833e0d94 JK |
898 | { |
899 | printf_filtered (" Locals at "); | |
d24c0599 | 900 | print_address_numeric (arg_list, 1, gdb_stdout); |
833e0d94 JK |
901 | printf_filtered (","); |
902 | } | |
b4fde6fa | 903 | } |
bd5635a1 | 904 | |
65b07ddc DT |
905 | FRAME_INIT_SAVED_REGS (fi); |
906 | if (fi->saved_regs != NULL) | |
907 | { | |
908 | /* The sp is special; what's returned isn't the save address, but | |
909 | actually the value of the previous frame's sp. */ | |
910 | printf_filtered (" Previous frame's sp is "); | |
911 | print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); | |
912 | printf_filtered ("\n"); | |
913 | count = 0; | |
914 | numregs = ARCH_NUM_REGS; | |
915 | for (i = 0; i < numregs; i++) | |
916 | if (fi->saved_regs[i] && i != SP_REGNUM) | |
917 | { | |
918 | if (count == 0) | |
919 | puts_filtered (" Saved registers:\n "); | |
920 | else | |
921 | puts_filtered (","); | |
922 | wrap_here (" "); | |
923 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
924 | print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); | |
925 | count++; | |
926 | } | |
927 | if (count) | |
928 | puts_filtered ("\n"); | |
929 | } | |
930 | else | |
931 | { | |
932 | /* We could get some information about saved registers by | |
933 | calling get_saved_register on each register. Which info goes | |
934 | with which frame is necessarily lost, however, and I suspect | |
935 | that the users don't care whether they get the info. */ | |
936 | puts_filtered ("\n"); | |
937 | } | |
bd5635a1 RP |
938 | } |
939 | ||
940 | #if 0 | |
941 | /* Set a limit on the number of frames printed by default in a | |
942 | backtrace. */ | |
943 | ||
944 | static int backtrace_limit; | |
945 | ||
946 | static void | |
947 | set_backtrace_limit_command (count_exp, from_tty) | |
948 | char *count_exp; | |
949 | int from_tty; | |
950 | { | |
951 | int count = parse_and_eval_address (count_exp); | |
952 | ||
953 | if (count < 0) | |
954 | error ("Negative argument not meaningful as backtrace limit."); | |
955 | ||
956 | backtrace_limit = count; | |
957 | } | |
958 | ||
959 | static void | |
960 | backtrace_limit_info (arg, from_tty) | |
961 | char *arg; | |
962 | int from_tty; | |
963 | { | |
964 | if (arg) | |
965 | error ("\"Info backtrace-limit\" takes no arguments."); | |
966 | ||
199b2450 | 967 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); |
bd5635a1 RP |
968 | } |
969 | #endif | |
970 | ||
971 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
972 | ||
973 | static void | |
65b07ddc | 974 | backtrace_command_1 (count_exp, show_locals, from_tty) |
bd5635a1 | 975 | char *count_exp; |
65b07ddc | 976 | int show_locals; |
bd5635a1 RP |
977 | int from_tty; |
978 | { | |
979 | struct frame_info *fi; | |
980 | register int count; | |
bd5635a1 | 981 | register int i; |
1a494973 | 982 | register struct frame_info *trailing; |
bd5635a1 RP |
983 | register int trailing_level; |
984 | ||
777bef06 JK |
985 | if (!target_has_stack) |
986 | error ("No stack."); | |
987 | ||
bd5635a1 RP |
988 | /* The following code must do two things. First, it must |
989 | set the variable TRAILING to the frame from which we should start | |
990 | printing. Second, it must set the variable count to the number | |
991 | of frames which we should print, or -1 if all of them. */ | |
992 | trailing = get_current_frame (); | |
993 | trailing_level = 0; | |
994 | if (count_exp) | |
995 | { | |
996 | count = parse_and_eval_address (count_exp); | |
997 | if (count < 0) | |
998 | { | |
1a494973 | 999 | struct frame_info *current; |
bd5635a1 RP |
1000 | |
1001 | count = -count; | |
1002 | ||
1003 | current = trailing; | |
1004 | while (current && count--) | |
1005 | { | |
1006 | QUIT; | |
1007 | current = get_prev_frame (current); | |
1008 | } | |
1009 | ||
1010 | /* Will stop when CURRENT reaches the top of the stack. TRAILING | |
1011 | will be COUNT below it. */ | |
1012 | while (current) | |
1013 | { | |
1014 | QUIT; | |
1015 | trailing = get_prev_frame (trailing); | |
1016 | current = get_prev_frame (current); | |
1017 | trailing_level++; | |
1018 | } | |
1019 | ||
1020 | count = -1; | |
1021 | } | |
1022 | } | |
1023 | else | |
1024 | count = -1; | |
1025 | ||
1026 | if (info_verbose) | |
1027 | { | |
1028 | struct partial_symtab *ps; | |
1029 | ||
1030 | /* Read in symbols for all of the frames. Need to do this in | |
1031 | a separate pass so that "Reading in symbols for xxx" messages | |
1032 | don't screw up the appearance of the backtrace. Also | |
1033 | if people have strong opinions against reading symbols for | |
1034 | backtrace this may have to be an option. */ | |
1035 | i = count; | |
1a494973 C |
1036 | for (fi = trailing; |
1037 | fi != NULL && i--; | |
1038 | fi = get_prev_frame (fi)) | |
bd5635a1 RP |
1039 | { |
1040 | QUIT; | |
bd5635a1 RP |
1041 | ps = find_pc_psymtab (fi->pc); |
1042 | if (ps) | |
3de61d8c | 1043 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ |
bd5635a1 RP |
1044 | } |
1045 | } | |
1046 | ||
1a494973 C |
1047 | for (i = 0, fi = trailing; |
1048 | fi && count--; | |
1049 | i++, fi = get_prev_frame (fi)) | |
bd5635a1 RP |
1050 | { |
1051 | QUIT; | |
199b2450 TL |
1052 | |
1053 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1054 | means further attempts to backtrace would fail (on the other | |
1055 | hand, perhaps the code does or could be fixed to make sure | |
1056 | the frame->prev field gets set to NULL in that case). */ | |
65b07ddc DT |
1057 | print_frame_info_base (fi, trailing_level + i, 0, 1); |
1058 | if (show_locals) | |
1059 | print_frame_local_vars(fi, 1, gdb_stdout); | |
bd5635a1 RP |
1060 | } |
1061 | ||
1062 | /* If we've stopped before the end, mention that. */ | |
1a494973 | 1063 | if (fi && from_tty) |
bd5635a1 RP |
1064 | printf_filtered ("(More stack frames follow...)\n"); |
1065 | } | |
65b07ddc DT |
1066 | |
1067 | static void | |
1068 | backtrace_command (arg, from_tty) | |
1069 | char *arg; | |
1070 | int from_tty; | |
1071 | { | |
1072 | struct cleanup *old_chain = (struct cleanup *)NULL; | |
1073 | char **argv = (char **)NULL; | |
1074 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
1075 | char *argPtr = arg; | |
1076 | ||
1077 | if (arg != (char *)NULL) | |
1078 | { | |
1079 | int i; | |
1080 | ||
1081 | argv = buildargv(arg); | |
1082 | old_chain = make_cleanup(freeargv, (char *)argv); | |
1083 | argc = 0; | |
1084 | for (i = 0; (argv[i] != (char *)NULL); i++) | |
1085 | { | |
1086 | int j; | |
1087 | ||
1088 | for (j = 0; (j < strlen(argv[i])); j++) | |
1089 | argv[i][j] = tolower(argv[i][j]); | |
1090 | ||
1091 | if (argIndicatingFullTrace < 0 && subsetCompare(argv[i], "full")) | |
1092 | argIndicatingFullTrace = argc; | |
1093 | else | |
1094 | { | |
1095 | argc++; | |
1096 | totArgLen += strlen(argv[i]); | |
1097 | } | |
1098 | } | |
1099 | totArgLen += argc; | |
1100 | if (argIndicatingFullTrace >= 0) | |
1101 | { | |
1102 | if (totArgLen > 0) | |
1103 | { | |
1104 | argPtr = (char *)xmalloc(totArgLen + 1); | |
1105 | if (!argPtr) | |
1106 | nomem(0); | |
1107 | else | |
1108 | { | |
1109 | memset(argPtr, 0, totArgLen + 1); | |
1110 | for (i = 0; (i < (argc + 1)); i++) | |
1111 | { | |
1112 | if (i != argIndicatingFullTrace) | |
1113 | { | |
1114 | strcat(argPtr, argv[i]); | |
1115 | strcat(argPtr, " "); | |
1116 | } | |
1117 | } | |
1118 | } | |
1119 | } | |
1120 | else | |
1121 | argPtr = (char *)NULL; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1126 | ||
1127 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
1128 | free(argPtr); | |
1129 | ||
1130 | if (old_chain) | |
1131 | do_cleanups(old_chain); | |
1132 | } | |
1133 | ||
1134 | static void | |
1135 | backtrace_full_command (arg, from_tty) | |
1136 | char *arg; | |
1137 | int from_tty; | |
1138 | { | |
1139 | backtrace_command_1 (arg, 1, from_tty); | |
1140 | } | |
1141 | ||
bd5635a1 RP |
1142 | \f |
1143 | /* Print the local variables of a block B active in FRAME. | |
1144 | Return 1 if any variables were printed; 0 otherwise. */ | |
1145 | ||
1146 | static int | |
65b07ddc | 1147 | print_block_frame_locals (b, fi, num_tabs, stream) |
bd5635a1 | 1148 | struct block *b; |
1a494973 | 1149 | register struct frame_info *fi; |
65b07ddc | 1150 | int num_tabs; |
199b2450 | 1151 | register GDB_FILE *stream; |
bd5635a1 RP |
1152 | { |
1153 | int nsyms; | |
65b07ddc | 1154 | register int i, j; |
bd5635a1 RP |
1155 | register struct symbol *sym; |
1156 | register int values_printed = 0; | |
1157 | ||
1158 | nsyms = BLOCK_NSYMS (b); | |
1159 | ||
1160 | for (i = 0; i < nsyms; i++) | |
1161 | { | |
1162 | sym = BLOCK_SYM (b, i); | |
f1de67d3 | 1163 | switch (SYMBOL_CLASS (sym)) |
bd5635a1 | 1164 | { |
f1de67d3 PS |
1165 | case LOC_LOCAL: |
1166 | case LOC_REGISTER: | |
1167 | case LOC_STATIC: | |
1168 | case LOC_BASEREG: | |
bd5635a1 | 1169 | values_printed = 1; |
65b07ddc DT |
1170 | for (j = 0; j < num_tabs; j++) |
1171 | fputs_filtered("\t", stream); | |
bd5d07d9 | 1172 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 | 1173 | fputs_filtered (" = ", stream); |
1a494973 | 1174 | print_variable_value (sym, fi, stream); |
bd5635a1 | 1175 | fprintf_filtered (stream, "\n"); |
f1de67d3 PS |
1176 | break; |
1177 | ||
1178 | default: | |
1179 | /* Ignore symbols which are not locals. */ | |
1180 | break; | |
bd5635a1 RP |
1181 | } |
1182 | } | |
1183 | return values_printed; | |
1184 | } | |
1185 | ||
cadbb07a | 1186 | /* Same, but print labels. */ |
bd5635a1 RP |
1187 | |
1188 | static int | |
cadbb07a | 1189 | print_block_frame_labels (b, have_default, stream) |
bd5635a1 | 1190 | struct block *b; |
bd5635a1 | 1191 | int *have_default; |
199b2450 | 1192 | register GDB_FILE *stream; |
bd5635a1 RP |
1193 | { |
1194 | int nsyms; | |
1195 | register int i; | |
1196 | register struct symbol *sym; | |
1197 | register int values_printed = 0; | |
1198 | ||
1199 | nsyms = BLOCK_NSYMS (b); | |
1200 | ||
1201 | for (i = 0; i < nsyms; i++) | |
1202 | { | |
1203 | sym = BLOCK_SYM (b, i); | |
bd5d07d9 | 1204 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
1205 | { |
1206 | if (*have_default) | |
1207 | continue; | |
1208 | *have_default = 1; | |
1209 | } | |
1210 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1211 | { | |
1212 | struct symtab_and_line sal; | |
1213 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1214 | values_printed = 1; | |
bd5d07d9 | 1215 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 | 1216 | if (addressprint) |
833e0d94 JK |
1217 | { |
1218 | fprintf_filtered (stream, " "); | |
d24c0599 | 1219 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); |
833e0d94 | 1220 | } |
bd5635a1 RP |
1221 | fprintf_filtered (stream, " in file %s, line %d\n", |
1222 | sal.symtab->filename, sal.line); | |
bd5635a1 RP |
1223 | } |
1224 | } | |
1225 | return values_printed; | |
1226 | } | |
1227 | ||
1228 | /* Print on STREAM all the local variables in frame FRAME, | |
1229 | including all the blocks active in that frame | |
1230 | at its current pc. | |
1231 | ||
1232 | Returns 1 if the job was done, | |
1233 | or 0 if nothing was printed because we have no info | |
1234 | on the function running in FRAME. */ | |
1235 | ||
c4668207 | 1236 | static void |
65b07ddc | 1237 | print_frame_local_vars (fi, num_tabs, stream) |
1a494973 | 1238 | register struct frame_info *fi; |
65b07ddc | 1239 | register int num_tabs; |
199b2450 | 1240 | register GDB_FILE *stream; |
bd5635a1 | 1241 | { |
1a494973 | 1242 | register struct block *block = get_frame_block (fi); |
bd5635a1 RP |
1243 | register int values_printed = 0; |
1244 | ||
1245 | if (block == 0) | |
1246 | { | |
1247 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 1248 | return; |
bd5635a1 RP |
1249 | } |
1250 | ||
1251 | while (block != 0) | |
1252 | { | |
65b07ddc | 1253 | if (print_block_frame_locals (block, fi, num_tabs, stream)) |
bd5635a1 RP |
1254 | values_printed = 1; |
1255 | /* After handling the function's top-level block, stop. | |
1256 | Don't continue to its superblock, the block of | |
1257 | per-file symbols. */ | |
1258 | if (BLOCK_FUNCTION (block)) | |
1259 | break; | |
1260 | block = BLOCK_SUPERBLOCK (block); | |
1261 | } | |
1262 | ||
1263 | if (!values_printed) | |
1264 | { | |
1265 | fprintf_filtered (stream, "No locals.\n"); | |
bd5635a1 | 1266 | } |
bd5635a1 RP |
1267 | } |
1268 | ||
1269 | /* Same, but print labels. */ | |
1270 | ||
c4668207 | 1271 | static void |
1a494973 C |
1272 | print_frame_label_vars (fi, this_level_only, stream) |
1273 | register struct frame_info *fi; | |
bd5635a1 | 1274 | int this_level_only; |
199b2450 | 1275 | register GDB_FILE *stream; |
bd5635a1 | 1276 | { |
bd5635a1 | 1277 | register struct blockvector *bl; |
1a494973 | 1278 | register struct block *block = get_frame_block (fi); |
bd5635a1 RP |
1279 | register int values_printed = 0; |
1280 | int index, have_default = 0; | |
1281 | char *blocks_printed; | |
bd5635a1 RP |
1282 | CORE_ADDR pc = fi->pc; |
1283 | ||
1284 | if (block == 0) | |
1285 | { | |
1286 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 1287 | return; |
bd5635a1 RP |
1288 | } |
1289 | ||
1290 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1291 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
3de61d8c | 1292 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
1293 | |
1294 | while (block != 0) | |
1295 | { | |
1296 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1297 | int last_index; | |
1298 | ||
1299 | if (bl != blockvector_for_pc (end, &index)) | |
1300 | error ("blockvector blotch"); | |
1301 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1302 | error ("blockvector botch"); | |
1303 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1304 | index += 1; | |
1305 | ||
1306 | /* Don't print out blocks that have gone by. */ | |
1307 | while (index < last_index | |
1308 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1309 | index++; | |
1310 | ||
1311 | while (index < last_index | |
1312 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1313 | { | |
1314 | if (blocks_printed[index] == 0) | |
1315 | { | |
cadbb07a | 1316 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) |
bd5635a1 RP |
1317 | values_printed = 1; |
1318 | blocks_printed[index] = 1; | |
1319 | } | |
1320 | index++; | |
1321 | } | |
1322 | if (have_default) | |
c4668207 | 1323 | return; |
bd5635a1 | 1324 | if (values_printed && this_level_only) |
c4668207 | 1325 | return; |
bd5635a1 RP |
1326 | |
1327 | /* After handling the function's top-level block, stop. | |
1328 | Don't continue to its superblock, the block of | |
1329 | per-file symbols. */ | |
1330 | if (BLOCK_FUNCTION (block)) | |
1331 | break; | |
1332 | block = BLOCK_SUPERBLOCK (block); | |
1333 | } | |
1334 | ||
1335 | if (!values_printed && !this_level_only) | |
1336 | { | |
1337 | fprintf_filtered (stream, "No catches.\n"); | |
bd5635a1 | 1338 | } |
bd5635a1 RP |
1339 | } |
1340 | ||
e1ce8aa5 | 1341 | /* ARGSUSED */ |
9ddf9aa9 | 1342 | void |
bd5635a1 RP |
1343 | locals_info (args, from_tty) |
1344 | char *args; | |
1345 | int from_tty; | |
1346 | { | |
cadbb07a JG |
1347 | if (!selected_frame) |
1348 | error ("No frame selected."); | |
65b07ddc | 1349 | print_frame_local_vars (selected_frame, 0, gdb_stdout); |
bd5635a1 RP |
1350 | } |
1351 | ||
1352 | static void | |
b4fde6fa FF |
1353 | catch_info (ignore, from_tty) |
1354 | char *ignore; | |
1355 | int from_tty; | |
bd5635a1 | 1356 | { |
65b07ddc DT |
1357 | struct symtab_and_line * sal; |
1358 | ||
1359 | /* Check for target support for exception handling */ | |
1360 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); | |
1361 | if (sal) | |
1362 | { | |
1363 | /* Currently not handling this */ | |
1364 | /* Ideally, here we should interact with the C++ runtime | |
1365 | system to find the list of active handlers, etc. */ | |
1366 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1367 | #if 0 | |
cadbb07a JG |
1368 | if (!selected_frame) |
1369 | error ("No frame selected."); | |
65b07ddc DT |
1370 | #endif |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | /* Assume g++ compiled code -- old v 4.16 behaviour */ | |
1375 | if (!selected_frame) | |
1376 | error ("No frame selected."); | |
1377 | ||
1378 | print_frame_label_vars (selected_frame, 0, gdb_stdout); | |
1379 | } | |
bd5635a1 RP |
1380 | } |
1381 | ||
c4668207 | 1382 | static void |
1a494973 C |
1383 | print_frame_arg_vars (fi, stream) |
1384 | register struct frame_info *fi; | |
199b2450 | 1385 | register GDB_FILE *stream; |
bd5635a1 | 1386 | { |
1a494973 | 1387 | struct symbol *func = get_frame_function (fi); |
bd5635a1 RP |
1388 | register struct block *b; |
1389 | int nsyms; | |
1390 | register int i; | |
1391 | register struct symbol *sym, *sym2; | |
1392 | register int values_printed = 0; | |
1393 | ||
1394 | if (func == 0) | |
1395 | { | |
1396 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
c4668207 | 1397 | return; |
bd5635a1 RP |
1398 | } |
1399 | ||
1400 | b = SYMBOL_BLOCK_VALUE (func); | |
1401 | nsyms = BLOCK_NSYMS (b); | |
1402 | ||
1403 | for (i = 0; i < nsyms; i++) | |
1404 | { | |
1405 | sym = BLOCK_SYM (b, i); | |
46c28185 | 1406 | switch (SYMBOL_CLASS (sym)) |
bd5635a1 | 1407 | { |
46c28185 RP |
1408 | case LOC_ARG: |
1409 | case LOC_LOCAL_ARG: | |
1410 | case LOC_REF_ARG: | |
1411 | case LOC_REGPARM: | |
1412 | case LOC_REGPARM_ADDR: | |
1413 | case LOC_BASEREG_ARG: | |
bd5635a1 | 1414 | values_printed = 1; |
bd5d07d9 | 1415 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
bd5635a1 | 1416 | fputs_filtered (" = ", stream); |
31258e4f JK |
1417 | |
1418 | /* We have to look up the symbol because arguments can have | |
1419 | two entries (one a parameter, one a local) and the one we | |
1420 | want is the local, which lookup_symbol will find for us. | |
1421 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1422 | small structure and gcc2 when the argument type is float | |
1423 | and it is passed as a double and converted to float by | |
1424 | the prologue (in the latter case the type of the LOC_ARG | |
1425 | symbol is double and the type of the LOC_LOCAL symbol is | |
6fe90fc8 JK |
1426 | float). There are also LOC_ARG/LOC_REGISTER pairs which |
1427 | are not combined in symbol-reading. */ | |
31258e4f | 1428 | |
bd5635a1 RP |
1429 | sym2 = lookup_symbol (SYMBOL_NAME (sym), |
1430 | b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); | |
1a494973 | 1431 | print_variable_value (sym2, fi, stream); |
bd5635a1 | 1432 | fprintf_filtered (stream, "\n"); |
46c28185 RP |
1433 | break; |
1434 | ||
1435 | default: | |
1436 | /* Don't worry about things which aren't arguments. */ | |
1437 | break; | |
bd5635a1 RP |
1438 | } |
1439 | } | |
1440 | ||
1441 | if (!values_printed) | |
1442 | { | |
1443 | fprintf_filtered (stream, "No arguments.\n"); | |
bd5635a1 | 1444 | } |
bd5635a1 RP |
1445 | } |
1446 | ||
9ddf9aa9 | 1447 | void |
b4fde6fa FF |
1448 | args_info (ignore, from_tty) |
1449 | char *ignore; | |
1450 | int from_tty; | |
bd5635a1 | 1451 | { |
cadbb07a JG |
1452 | if (!selected_frame) |
1453 | error ("No frame selected."); | |
199b2450 | 1454 | print_frame_arg_vars (selected_frame, gdb_stdout); |
bd5635a1 | 1455 | } |
9ddf9aa9 | 1456 | |
65b07ddc DT |
1457 | |
1458 | static void | |
1459 | args_plus_locals_info(ignore, from_tty) | |
1460 | char *ignore; | |
1461 | int from_tty; | |
1462 | { | |
1463 | args_info(ignore, from_tty); | |
1464 | locals_info(ignore, from_tty); | |
1465 | } | |
1466 | ||
bd5635a1 | 1467 | \f |
1a494973 | 1468 | /* Select frame FI, and note that its stack level is LEVEL. |
bd5635a1 RP |
1469 | LEVEL may be -1 if an actual level number is not known. */ |
1470 | ||
1471 | void | |
1a494973 C |
1472 | select_frame (fi, level) |
1473 | struct frame_info *fi; | |
bd5635a1 RP |
1474 | int level; |
1475 | { | |
89e0bbcd JG |
1476 | register struct symtab *s; |
1477 | ||
1a494973 | 1478 | selected_frame = fi; |
bd5635a1 | 1479 | selected_frame_level = level; |
9ddf9aa9 AC |
1480 | if (selected_frame_level_changed_hook) |
1481 | selected_frame_level_changed_hook (level); | |
89e0bbcd JG |
1482 | |
1483 | /* Ensure that symbols for this frame are read in. Also, determine the | |
1484 | source language of this frame, and switch to it if desired. */ | |
1a494973 | 1485 | if (fi) |
89e0bbcd | 1486 | { |
1a494973 | 1487 | s = find_pc_symtab (fi->pc); |
89e0bbcd | 1488 | if (s |
91ec58ee | 1489 | && s->language != current_language->la_language |
89e0bbcd JG |
1490 | && s->language != language_unknown |
1491 | && language_mode == language_mode_auto) { | |
1492 | set_language(s->language); | |
1493 | } | |
65b07ddc DT |
1494 | /* elz: this if here fixes the problem with the pc not being displayed |
1495 | in the tui asm layout, with no debug symbols. The value of s | |
1496 | would be 0 here, and select_source_symtab would abort the | |
1497 | command by calling the 'error' function*/ | |
1498 | if (s) | |
1499 | { | |
1500 | TUIDO(((TuiOpaqueFuncPtr)tui_vSelectSourceSymtab, s)); | |
1501 | } | |
89e0bbcd | 1502 | } |
bd5635a1 RP |
1503 | } |
1504 | ||
65b07ddc DT |
1505 | \f |
1506 | /* Select frame FI, noting that its stack level is LEVEL. Also print | |
1507 | the stack frame and show the source if this is the tui version. */ | |
1508 | void | |
1509 | select_and_print_frame(fi, level) | |
1510 | struct frame_info *fi; | |
1511 | int level; | |
1512 | { | |
1513 | select_frame(fi, level); | |
1514 | if (fi) | |
1515 | { | |
1516 | print_stack_frame(fi, level, 1); | |
1517 | TUIDO(((TuiOpaqueFuncPtr)tui_vCheckDataValues, fi)); | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | \f | |
1522 | /* Select frame FI, noting that its stack level is LEVEL. Be silent if | |
1523 | not the TUI */ | |
1524 | void | |
1525 | select_and_maybe_print_frame(fi, level) | |
1526 | struct frame_info *fi; | |
1527 | int level; | |
1528 | { | |
1529 | if (!tui_version) | |
1530 | select_frame(fi, level); | |
1531 | else | |
1532 | select_and_print_frame(fi, level); | |
1533 | } | |
1534 | ||
1535 | ||
777bef06 JK |
1536 | /* Store the selected frame and its level into *FRAMEP and *LEVELP. |
1537 | If there is no selected frame, *FRAMEP is set to NULL. */ | |
bd5635a1 RP |
1538 | |
1539 | void | |
1540 | record_selected_frame (frameaddrp, levelp) | |
1a494973 | 1541 | CORE_ADDR *frameaddrp; |
bd5635a1 RP |
1542 | int *levelp; |
1543 | { | |
1a494973 | 1544 | *frameaddrp = selected_frame ? selected_frame->frame : 0; |
bd5635a1 RP |
1545 | *levelp = selected_frame_level; |
1546 | } | |
1547 | ||
1548 | /* Return the symbol-block in which the selected frame is executing. | |
1549 | Can return zero under various legitimate circumstances. */ | |
1550 | ||
1551 | struct block * | |
1552 | get_selected_block () | |
1553 | { | |
1554 | if (!target_has_stack) | |
1555 | return 0; | |
1556 | ||
1557 | if (!selected_frame) | |
1558 | return get_current_block (); | |
1559 | return get_frame_block (selected_frame); | |
1560 | } | |
1561 | ||
1562 | /* Find a frame a certain number of levels away from FRAME. | |
1563 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1564 | Positive means go to earlier frames (up); negative, the reverse. | |
1565 | The int that contains the number of levels is counted toward | |
1566 | zero as the frames for those levels are found. | |
1567 | If the top or bottom frame is reached, that frame is returned, | |
1568 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1569 | how much farther the original request asked to go. */ | |
1570 | ||
1a494973 | 1571 | struct frame_info * |
bd5635a1 | 1572 | find_relative_frame (frame, level_offset_ptr) |
1a494973 C |
1573 | register struct frame_info *frame; |
1574 | register int *level_offset_ptr; | |
bd5635a1 | 1575 | { |
1a494973 C |
1576 | register struct frame_info *prev; |
1577 | register struct frame_info *frame1; | |
bd5635a1 RP |
1578 | |
1579 | /* Going up is simple: just do get_prev_frame enough times | |
1580 | or until initial frame is reached. */ | |
1581 | while (*level_offset_ptr > 0) | |
1582 | { | |
1583 | prev = get_prev_frame (frame); | |
1584 | if (prev == 0) | |
1585 | break; | |
1586 | (*level_offset_ptr)--; | |
1587 | frame = prev; | |
1588 | } | |
d8ce1326 | 1589 | /* Going down is just as simple. */ |
bd5635a1 RP |
1590 | if (*level_offset_ptr < 0) |
1591 | { | |
cadbb07a JG |
1592 | while (*level_offset_ptr < 0) { |
1593 | frame1 = get_next_frame (frame); | |
1594 | if (!frame1) | |
1595 | break; | |
1596 | frame = frame1; | |
1597 | (*level_offset_ptr)++; | |
1598 | } | |
bd5635a1 RP |
1599 | } |
1600 | return frame; | |
1601 | } | |
1602 | ||
c4668207 | 1603 | /* The "select_frame" command. With no arg, NOP. |
bd5635a1 RP |
1604 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a |
1605 | valid level. Otherwise, treat level_exp as an address expression | |
b0077123 | 1606 | and select it. See parse_frame_specification for more info on proper |
bd5635a1 RP |
1607 | frame expressions. */ |
1608 | ||
c4668207 | 1609 | /* ARGSUSED */ |
bd5635a1 | 1610 | static void |
c4668207 | 1611 | select_frame_command (level_exp, from_tty) |
bd5635a1 RP |
1612 | char *level_exp; |
1613 | int from_tty; | |
1614 | { | |
1a494973 | 1615 | register struct frame_info *frame, *frame1; |
bd5635a1 RP |
1616 | unsigned int level = 0; |
1617 | ||
1618 | if (!target_has_stack) | |
1619 | error ("No stack."); | |
1620 | ||
1621 | frame = parse_frame_specification (level_exp); | |
1622 | ||
cadbb07a JG |
1623 | /* Try to figure out what level this frame is. But if there is |
1624 | no current stack, don't error out -- let the user set one. */ | |
1625 | frame1 = 0; | |
1626 | if (get_current_frame()) { | |
1627 | for (frame1 = get_prev_frame (0); | |
1628 | frame1 && frame1 != frame; | |
1629 | frame1 = get_prev_frame (frame1)) | |
1630 | level++; | |
1631 | } | |
bd5635a1 RP |
1632 | |
1633 | if (!frame1) | |
1634 | level = 0; | |
1635 | ||
1636 | select_frame (frame, level); | |
b0077123 | 1637 | } |
bd5635a1 | 1638 | |
b0077123 | 1639 | /* The "frame" command. With no arg, print selected frame briefly. |
c4668207 | 1640 | With arg, behaves like select_frame and then prints the selected |
b0077123 | 1641 | frame. */ |
bd5635a1 | 1642 | |
65b07ddc | 1643 | void |
b0077123 JG |
1644 | frame_command (level_exp, from_tty) |
1645 | char *level_exp; | |
1646 | int from_tty; | |
1647 | { | |
c4668207 | 1648 | select_frame_command (level_exp, from_tty); |
65b07ddc | 1649 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); |
bd5635a1 RP |
1650 | } |
1651 | ||
65b07ddc DT |
1652 | /* The XDB Compatibility command to print the current frame. */ |
1653 | ||
1654 | void | |
1655 | current_frame_command (level_exp, from_tty) | |
1656 | char *level_exp; | |
1657 | int from_tty; | |
1658 | { | |
1659 | if (target_has_stack == 0 || selected_frame == 0) | |
1660 | error ("No stack."); | |
1661 | print_only_stack_frame (selected_frame, selected_frame_level, 1); | |
1662 | } | |
1663 | ||
bd5635a1 RP |
1664 | /* Select the frame up one or COUNT stack levels |
1665 | from the previously selected frame, and print it briefly. */ | |
1666 | ||
e1ce8aa5 | 1667 | /* ARGSUSED */ |
bd5635a1 | 1668 | static void |
65b07ddc | 1669 | up_silently_base (count_exp) |
bd5635a1 | 1670 | char *count_exp; |
bd5635a1 | 1671 | { |
1a494973 | 1672 | register struct frame_info *fi; |
bd5635a1 RP |
1673 | int count = 1, count1; |
1674 | if (count_exp) | |
1675 | count = parse_and_eval_address (count_exp); | |
1676 | count1 = count; | |
1677 | ||
0f552c5f | 1678 | if (target_has_stack == 0 || selected_frame == 0) |
bd5635a1 RP |
1679 | error ("No stack."); |
1680 | ||
1a494973 | 1681 | fi = find_relative_frame (selected_frame, &count1); |
bd5635a1 RP |
1682 | if (count1 != 0 && count_exp == 0) |
1683 | error ("Initial frame selected; you cannot go up."); | |
1a494973 | 1684 | select_frame (fi, selected_frame_level + count - count1); |
bd5635a1 RP |
1685 | } |
1686 | ||
65b07ddc DT |
1687 | static void |
1688 | up_silently_command (count_exp, from_tty) | |
1689 | char *count_exp; | |
1690 | int from_tty; | |
1691 | { | |
1692 | up_silently_base(count_exp); | |
1693 | if (tui_version) | |
1694 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1695 | } | |
1696 | ||
bd5635a1 RP |
1697 | static void |
1698 | up_command (count_exp, from_tty) | |
1699 | char *count_exp; | |
1700 | int from_tty; | |
1701 | { | |
65b07ddc DT |
1702 | up_silently_base (count_exp); |
1703 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
bd5635a1 RP |
1704 | } |
1705 | ||
1706 | /* Select the frame down one or COUNT stack levels | |
1707 | from the previously selected frame, and print it briefly. */ | |
1708 | ||
e1ce8aa5 | 1709 | /* ARGSUSED */ |
bd5635a1 | 1710 | static void |
65b07ddc | 1711 | down_silently_base (count_exp) |
bd5635a1 | 1712 | char *count_exp; |
bd5635a1 | 1713 | { |
1a494973 | 1714 | register struct frame_info *frame; |
bd5635a1 RP |
1715 | int count = -1, count1; |
1716 | if (count_exp) | |
1717 | count = - parse_and_eval_address (count_exp); | |
1718 | count1 = count; | |
1719 | ||
0f552c5f | 1720 | if (target_has_stack == 0 || selected_frame == 0) |
89e0bbcd JG |
1721 | error ("No stack."); |
1722 | ||
bd5635a1 RP |
1723 | frame = find_relative_frame (selected_frame, &count1); |
1724 | if (count1 != 0 && count_exp == 0) | |
4f983400 JK |
1725 | { |
1726 | ||
1727 | /* We only do this if count_exp is not specified. That way "down" | |
1728 | means to really go down (and let me know if that is | |
1729 | impossible), but "down 9999" can be used to mean go all the way | |
1730 | down without getting an error. */ | |
1731 | ||
1732 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1733 | } | |
1734 | ||
bd5635a1 RP |
1735 | select_frame (frame, selected_frame_level + count - count1); |
1736 | } | |
1737 | ||
65b07ddc DT |
1738 | /* ARGSUSED */ |
1739 | static void | |
1740 | down_silently_command (count_exp, from_tty) | |
1741 | char *count_exp; | |
1742 | int from_tty; | |
1743 | { | |
1744 | down_silently_base (count_exp); | |
1745 | if (tui_version) | |
1746 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
1747 | } | |
bd5635a1 RP |
1748 | |
1749 | static void | |
1750 | down_command (count_exp, from_tty) | |
1751 | char *count_exp; | |
1752 | int from_tty; | |
1753 | { | |
65b07ddc DT |
1754 | down_silently_base (count_exp); |
1755 | show_and_print_stack_frame (selected_frame, selected_frame_level, 1); | |
bd5635a1 RP |
1756 | } |
1757 | \f | |
1758 | static void | |
1759 | return_command (retval_exp, from_tty) | |
1760 | char *retval_exp; | |
1761 | int from_tty; | |
1762 | { | |
777bef06 | 1763 | struct symbol *thisfun; |
1a494973 | 1764 | CORE_ADDR selected_frame_addr; |
777bef06 | 1765 | CORE_ADDR selected_frame_pc; |
1a494973 | 1766 | struct frame_info *frame; |
d24c0599 | 1767 | value_ptr return_value = NULL; |
bd5635a1 | 1768 | |
777bef06 JK |
1769 | if (selected_frame == NULL) |
1770 | error ("No selected frame."); | |
1771 | thisfun = get_frame_function (selected_frame); | |
1772 | selected_frame_addr = FRAME_FP (selected_frame); | |
1a494973 | 1773 | selected_frame_pc = selected_frame->pc; |
777bef06 | 1774 | |
78cab901 | 1775 | /* Compute the return value (if any -- possibly getting errors here). */ |
0f552c5f JG |
1776 | |
1777 | if (retval_exp) | |
1778 | { | |
1a494973 C |
1779 | struct type *return_type = NULL; |
1780 | ||
0f552c5f | 1781 | return_value = parse_and_eval (retval_exp); |
78cab901 | 1782 | |
1a494973 C |
1783 | /* Cast return value to the return type of the function. */ |
1784 | if (thisfun != NULL) | |
1785 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1786 | if (return_type == NULL) | |
1787 | return_type = builtin_type_int; | |
1788 | return_value = value_cast (return_type, return_value); | |
1789 | ||
78cab901 JK |
1790 | /* Make sure we have fully evaluated it, since |
1791 | it might live in the stack frame we're about to pop. */ | |
1792 | if (VALUE_LAZY (return_value)) | |
1793 | value_fetch_lazy (return_value); | |
0f552c5f JG |
1794 | } |
1795 | ||
bd5635a1 RP |
1796 | /* If interactive, require confirmation. */ |
1797 | ||
1798 | if (from_tty) | |
1799 | { | |
1800 | if (thisfun != 0) | |
1801 | { | |
bd5d07d9 | 1802 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) |
b4fde6fa FF |
1803 | { |
1804 | error ("Not confirmed."); | |
1805 | /* NOTREACHED */ | |
1806 | } | |
bd5635a1 RP |
1807 | } |
1808 | else | |
1809 | if (!query ("Make selected stack frame return now? ")) | |
1810 | error ("Not confirmed."); | |
1811 | } | |
1812 | ||
1813 | /* Do the real work. Pop until the specified frame is current. We | |
1814 | use this method because the selected_frame is not valid after | |
1815 | a POP_FRAME. The pc comparison makes this work even if the | |
1816 | selected frame shares its fp with another frame. */ | |
1817 | ||
1a494973 C |
1818 | while (selected_frame_addr != (frame = get_current_frame())->frame |
1819 | || selected_frame_pc != frame->pc) | |
bd5635a1 RP |
1820 | POP_FRAME; |
1821 | ||
1822 | /* Then pop that frame. */ | |
1823 | ||
1824 | POP_FRAME; | |
1825 | ||
1826 | /* Compute the return value (if any) and store in the place | |
1827 | for return values. */ | |
1828 | ||
1829 | if (retval_exp) | |
0f552c5f | 1830 | set_return_value (return_value); |
bd5635a1 RP |
1831 | |
1832 | /* If interactive, print the frame that is now current. */ | |
1833 | ||
1834 | if (from_tty) | |
1835 | frame_command ("0", 1); | |
d0e0eca2 FF |
1836 | else |
1837 | select_frame_command ("0", 0); | |
bd5635a1 | 1838 | } |
89e0bbcd | 1839 | |
65b07ddc DT |
1840 | /* Sets the scope to input function name, provided that the |
1841 | function is within the current stack frame */ | |
1842 | typedef struct function_bounds | |
1843 | { | |
1844 | CORE_ADDR low, high; | |
1845 | }; | |
1846 | ||
1847 | static void | |
1848 | func_command (arg, from_tty) | |
1849 | char *arg; | |
1850 | int from_tty; | |
1851 | { | |
1852 | if (arg != (char *)NULL) | |
1853 | { | |
1854 | struct frame_info *fp; | |
1855 | int found = 0; | |
1856 | struct symtabs_and_lines sals; | |
1857 | int i; | |
1858 | int level = 1; | |
1859 | struct function_bounds *funcBounds = (struct function_bounds *)NULL; | |
1860 | ||
1861 | fp = parse_frame_specification("0"); | |
1862 | sals = decode_line_spec(arg, 1); | |
1863 | funcBounds = (struct function_bounds *)xmalloc( | |
1864 | sizeof(struct function_bounds) * sals.nelts); | |
1865 | for (i = 0; (i < sals.nelts && !found); i++) | |
1866 | { | |
1867 | if (sals.sals[i].pc == (CORE_ADDR)0 || | |
1868 | find_pc_partial_function(sals.sals[i].pc, | |
1869 | (char **)NULL, | |
1870 | &funcBounds[i].low, | |
1871 | &funcBounds[i].high) == 0) | |
1872 | { | |
1873 | funcBounds[i].low = | |
1874 | funcBounds[i].high = (CORE_ADDR)NULL; | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | do | |
1879 | { | |
1880 | for (i = 0; (i < sals.nelts && !found); i++) | |
1881 | found = (fp->pc >= funcBounds[i].low && | |
1882 | fp->pc < funcBounds[i].high); | |
1883 | if (!found) | |
1884 | { | |
1885 | level = 1; | |
1886 | fp = find_relative_frame(fp, &level); | |
1887 | } | |
1888 | } while (!found && level == 0); | |
1889 | ||
1890 | if (funcBounds) | |
1891 | free(funcBounds); | |
1892 | ||
1893 | if (!found) | |
1894 | printf_filtered("'%s' not within current stack frame.\n", arg); | |
1895 | else if (fp != selected_frame) /* set the stack frame here! */ | |
1896 | select_and_print_frame(fp); | |
1897 | } | |
1898 | } | |
1899 | ||
1a494973 C |
1900 | /* Gets the language of the current frame. */ |
1901 | ||
89e0bbcd JG |
1902 | enum language |
1903 | get_frame_language() | |
1904 | { | |
1a494973 C |
1905 | register struct symtab *s; |
1906 | enum language flang; /* The language of the current frame */ | |
89e0bbcd | 1907 | |
1a494973 C |
1908 | if (selected_frame) |
1909 | { | |
1910 | s = find_pc_symtab(selected_frame->pc); | |
1911 | if (s) | |
1912 | flang = s->language; | |
89e0bbcd | 1913 | else |
1a494973 C |
1914 | flang = language_unknown; |
1915 | } | |
1916 | else | |
1917 | flang = language_unknown; | |
89e0bbcd | 1918 | |
1a494973 | 1919 | return flang; |
89e0bbcd | 1920 | } |
bd5635a1 RP |
1921 | \f |
1922 | void | |
1923 | _initialize_stack () | |
1924 | { | |
1925 | #if 0 | |
1926 | backtrace_limit = 30; | |
1927 | #endif | |
1928 | ||
1929 | add_com ("return", class_stack, return_command, | |
1930 | "Make selected stack frame return to its caller.\n\ | |
1931 | Control remains in the debugger, but when you continue\n\ | |
1932 | execution will resume in the frame above the one now selected.\n\ | |
1933 | If an argument is given, it is an expression for the value to return."); | |
1934 | ||
1935 | add_com ("up", class_stack, up_command, | |
1936 | "Select and print stack frame that called this one.\n\ | |
1937 | An argument says how many frames up to go."); | |
1938 | add_com ("up-silently", class_support, up_silently_command, | |
1939 | "Same as the `up' command, but does not print anything.\n\ | |
1940 | This is useful in command scripts."); | |
1941 | ||
1942 | add_com ("down", class_stack, down_command, | |
1943 | "Select and print stack frame called by this one.\n\ | |
1944 | An argument says how many frames down to go."); | |
1945 | add_com_alias ("do", "down", class_stack, 1); | |
3de61d8c | 1946 | add_com_alias ("dow", "down", class_stack, 1); |
bd5635a1 RP |
1947 | add_com ("down-silently", class_support, down_silently_command, |
1948 | "Same as the `down' command, but does not print anything.\n\ | |
1949 | This is useful in command scripts."); | |
1950 | ||
1951 | add_com ("frame", class_stack, frame_command, | |
1952 | "Select and print a stack frame.\n\ | |
1953 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1954 | An argument specifies the frame to select.\n\ | |
1955 | It can be a stack frame number or the address of the frame.\n\ | |
1956 | With argument, nothing is printed if input is coming from\n\ | |
1957 | a command file or a user-defined command."); | |
1958 | ||
1959 | add_com_alias ("f", "frame", class_stack, 1); | |
1960 | ||
65b07ddc DT |
1961 | if (xdb_commands) |
1962 | { | |
1963 | add_com("L", class_stack, current_frame_command, | |
1964 | "Print the current stack frame.\n"); | |
1965 | add_com_alias ("V", "frame", class_stack, 1); | |
1966 | } | |
c4668207 | 1967 | add_com ("select-frame", class_stack, select_frame_command, |
b0077123 JG |
1968 | "Select a stack frame without printing anything.\n\ |
1969 | An argument specifies the frame to select.\n\ | |
1970 | It can be a stack frame number or the address of the frame.\n"); | |
1971 | ||
bd5635a1 RP |
1972 | add_com ("backtrace", class_stack, backtrace_command, |
1973 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
65b07ddc DT |
1974 | With a negative argument, print outermost -COUNT frames.\n\ |
1975 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
bd5635a1 | 1976 | add_com_alias ("bt", "backtrace", class_stack, 0); |
65b07ddc DT |
1977 | if (xdb_commands) |
1978 | { | |
1979 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1980 | add_com ("T", class_stack, backtrace_full_command, | |
1981 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ | |
1982 | and the values of the local variables.\n\ | |
1983 | With a negative argument, print outermost -COUNT frames.\n\ | |
1984 | Usage: T <count>\n"); | |
1985 | } | |
1986 | ||
bd5635a1 RP |
1987 | add_com_alias ("where", "backtrace", class_alias, 0); |
1988 | add_info ("stack", backtrace_command, | |
1989 | "Backtrace of the stack, or innermost COUNT frames."); | |
1990 | add_info_alias ("s", "stack", 1); | |
1991 | add_info ("frame", frame_info, | |
1992 | "All about selected stack frame, or frame at ADDR."); | |
1993 | add_info_alias ("f", "frame", 1); | |
1994 | add_info ("locals", locals_info, | |
1995 | "Local variables of current stack frame."); | |
1996 | add_info ("args", args_info, | |
1997 | "Argument variables of current stack frame."); | |
65b07ddc DT |
1998 | if (xdb_commands) |
1999 | add_com("l", class_info, args_plus_locals_info, | |
2000 | "Argument and local variables of current stack frame."); | |
2001 | ||
2002 | if (dbx_commands) | |
2003 | add_com("func", class_stack, func_command, | |
2004 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
2005 | ||
bd5635a1 RP |
2006 | add_info ("catch", catch_info, |
2007 | "Exceptions that can be caught in the current stack frame."); | |
2008 | ||
2009 | #if 0 | |
2010 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, | |
2011 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
2012 | &setlist); | |
2013 | add_info ("backtrace-limit", backtrace_limit_info, | |
2014 | "The maximum number of frames for \"backtrace\" to print by default."); | |
2015 | #endif | |
2016 | } |