Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008 |
0fd88904 | 5 | Free Software 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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include "value.h" |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "language.h" | |
28 | #include "frame.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "gdbcore.h" | |
31 | #include "target.h" | |
0378c332 | 32 | #include "source.h" |
c906108c SS |
33 | #include "breakpoint.h" |
34 | #include "demangle.h" | |
35 | #include "inferior.h" | |
36 | #include "annotate.h" | |
8b93c638 | 37 | #include "ui-out.h" |
fe898f56 | 38 | #include "block.h" |
b9362cc7 | 39 | #include "stack.h" |
de4f826b | 40 | #include "dictionary.h" |
60250e8b | 41 | #include "exceptions.h" |
898c62f5 | 42 | #include "reggroups.h" |
fc70c2a0 | 43 | #include "regcache.h" |
a77053c2 | 44 | #include "solib.h" |
033a42c2 | 45 | #include "valprint.h" |
8ea051c5 | 46 | #include "gdbthread.h" |
c906108c | 47 | |
033a42c2 MK |
48 | #include "gdb_assert.h" |
49 | #include <ctype.h> | |
50 | #include "gdb_string.h" | |
c906108c | 51 | |
9a4105ab | 52 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 53 | |
88408340 JB |
54 | /* The possible choices of "set print frame-arguments, and the value |
55 | of this setting. */ | |
56 | ||
57 | static const char *print_frame_arguments_choices[] = | |
58 | {"all", "scalars", "none", NULL}; | |
59 | static const char *print_frame_arguments = "all"; | |
60 | ||
a58dd373 | 61 | /* Prototypes for local functions. */ |
c906108c | 62 | |
d9fcf2fb JM |
63 | static void print_frame_local_vars (struct frame_info *, int, |
64 | struct ui_file *); | |
c906108c | 65 | |
033a42c2 MK |
66 | static void print_frame (struct frame_info *frame, int print_level, |
67 | enum print_what print_what, int print_args, | |
c5394b80 JM |
68 | struct symtab_and_line sal); |
69 | ||
c906108c SS |
70 | /* Zero means do things normally; we are interacting directly with the |
71 | user. One means print the full filename and linenumber when a | |
72 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
73 | parse. Two means print similar annotations, but in many more | |
74 | cases and in a slightly different syntax. */ | |
75 | ||
76 | int annotation_level = 0; | |
c906108c | 77 | \f |
c5aa993b JM |
78 | |
79 | struct print_stack_frame_args | |
033a42c2 MK |
80 | { |
81 | struct frame_info *frame; | |
82 | int print_level; | |
83 | enum print_what print_what; | |
84 | int print_args; | |
85 | }; | |
86 | ||
87 | /* Show or print the frame arguments; stub for catch_errors. */ | |
88 | ||
c906108c | 89 | static int |
fba45db2 | 90 | print_stack_frame_stub (void *args) |
c906108c | 91 | { |
c789492a | 92 | struct print_stack_frame_args *p = args; |
033a42c2 | 93 | int center = (p->print_what == SRC_LINE || p->print_what == SRC_AND_LOC); |
c906108c | 94 | |
033a42c2 MK |
95 | print_frame_info (p->frame, p->print_level, p->print_what, p->print_args); |
96 | set_current_sal_from_frame (p->frame, center); | |
c906108c SS |
97 | return 0; |
98 | } | |
99 | ||
033a42c2 | 100 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
101 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
102 | relative level, function name, argument list, and file name and | |
103 | line number. If the frame's PC is not at the beginning of the | |
104 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
105 | |
106 | void | |
033a42c2 | 107 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 108 | enum print_what print_what) |
c906108c SS |
109 | { |
110 | struct print_stack_frame_args args; | |
111 | ||
033a42c2 | 112 | args.frame = frame; |
0faf0076 AC |
113 | args.print_level = print_level; |
114 | args.print_what = print_what; | |
aaf9e9fd DP |
115 | /* For mi, alway print location and address. */ |
116 | args.print_what = ui_out_is_mi_like_p (uiout) ? LOC_AND_ADDRESS : print_what; | |
0faf0076 | 117 | args.print_args = 1; |
c906108c | 118 | |
5c3ce3f7 | 119 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ERROR); |
7789c6f5 | 120 | } |
c906108c | 121 | |
c5aa993b JM |
122 | struct print_args_args |
123 | { | |
c906108c | 124 | struct symbol *func; |
033a42c2 | 125 | struct frame_info *frame; |
d9fcf2fb | 126 | struct ui_file *stream; |
c906108c SS |
127 | }; |
128 | ||
033a42c2 | 129 | static int print_args_stub (void *args); |
c906108c | 130 | |
033a42c2 MK |
131 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
132 | the offset of the first nameless argument, and NUM is the number of | |
133 | nameless arguments to print. FIRST is nonzero if this is the first | |
134 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
135 | |
136 | static void | |
033a42c2 | 137 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
138 | int first, struct ui_file *stream) |
139 | { | |
140 | int i; | |
141 | CORE_ADDR argsaddr; | |
142 | long arg_value; | |
143 | ||
144 | for (i = 0; i < num; i++) | |
145 | { | |
146 | QUIT; | |
033a42c2 | 147 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
148 | if (!argsaddr) |
149 | return; | |
150 | arg_value = read_memory_integer (argsaddr + start, sizeof (int)); | |
151 | if (!first) | |
152 | fprintf_filtered (stream, ", "); | |
153 | fprintf_filtered (stream, "%ld", arg_value); | |
154 | first = 0; | |
155 | start += sizeof (int); | |
156 | } | |
157 | } | |
158 | ||
88408340 JB |
159 | /* Return non-zero if the debugger should print the value of the provided |
160 | symbol parameter (SYM). */ | |
161 | ||
162 | static int | |
163 | print_this_frame_argument_p (struct symbol *sym) | |
164 | { | |
165 | struct type *type; | |
166 | ||
167 | /* If the user asked to print no argument at all, then obviously | |
168 | do not print this argument. */ | |
169 | ||
170 | if (strcmp (print_frame_arguments, "none") == 0) | |
171 | return 0; | |
172 | ||
173 | /* If the user asked to print all arguments, then we should print | |
174 | that one. */ | |
175 | ||
176 | if (strcmp (print_frame_arguments, "all") == 0) | |
177 | return 1; | |
178 | ||
179 | /* The user asked to print only the scalar arguments, so do not | |
180 | print the non-scalar ones. */ | |
181 | ||
182 | type = CHECK_TYPEDEF (SYMBOL_TYPE (sym)); | |
0366cf3f JB |
183 | while (TYPE_CODE (type) == TYPE_CODE_REF) |
184 | type = CHECK_TYPEDEF (TYPE_TARGET_TYPE (type)); | |
88408340 JB |
185 | switch (TYPE_CODE (type)) |
186 | { | |
187 | case TYPE_CODE_ARRAY: | |
188 | case TYPE_CODE_STRUCT: | |
189 | case TYPE_CODE_UNION: | |
190 | case TYPE_CODE_SET: | |
191 | case TYPE_CODE_STRING: | |
192 | case TYPE_CODE_BITSTRING: | |
193 | return 0; | |
194 | default: | |
195 | return 1; | |
196 | } | |
197 | } | |
198 | ||
033a42c2 MK |
199 | /* Print the arguments of frame FRAME on STREAM, given the function |
200 | FUNC running in that frame (as a symbol), where NUM is the number | |
201 | of arguments according to the stack frame (or -1 if the number of | |
202 | arguments is unknown). */ | |
8d3b0994 | 203 | |
033a42c2 MK |
204 | /* Note that currently the "number of argumentss according to the |
205 | stack frame" is only known on VAX where i refers to the "number of | |
206 | ints of argumentss according to the stack frame". */ | |
8d3b0994 AC |
207 | |
208 | static void | |
033a42c2 MK |
209 | print_frame_args (struct symbol *func, struct frame_info *frame, |
210 | int num, struct ui_file *stream) | |
8d3b0994 | 211 | { |
8d3b0994 | 212 | int first = 1; |
8d3b0994 | 213 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
214 | at the highest offset, or -1 if we haven't come to a stack |
215 | argument yet. */ | |
8d3b0994 | 216 | long highest_offset = -1; |
8d3b0994 AC |
217 | /* Number of ints of arguments that we have printed so far. */ |
218 | int args_printed = 0; | |
219 | struct cleanup *old_chain, *list_chain; | |
220 | struct ui_stream *stb; | |
221 | ||
222 | stb = ui_out_stream_new (uiout); | |
223 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
224 | ||
225 | if (func) | |
226 | { | |
033a42c2 MK |
227 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
228 | struct dict_iterator iter; | |
229 | struct symbol *sym; | |
230 | struct value *val; | |
8d3b0994 | 231 | |
de4f826b | 232 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
233 | { |
234 | QUIT; | |
235 | ||
236 | /* Keep track of the highest stack argument offset seen, and | |
237 | skip over any kinds of symbols we don't care about. */ | |
238 | ||
2a2d4dc3 AS |
239 | if (!SYMBOL_IS_ARGUMENT (sym)) |
240 | continue; | |
241 | ||
8d3b0994 AC |
242 | switch (SYMBOL_CLASS (sym)) |
243 | { | |
244 | case LOC_ARG: | |
245 | case LOC_REF_ARG: | |
246 | { | |
247 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 248 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
249 | |
250 | /* Compute address of next argument by adding the size of | |
251 | this argument and rounding to an int boundary. */ | |
252 | current_offset = | |
253 | ((current_offset + arg_size + sizeof (int) - 1) | |
254 | & ~(sizeof (int) - 1)); | |
255 | ||
033a42c2 MK |
256 | /* If this is the highest offset seen yet, set |
257 | highest_offset. */ | |
8d3b0994 AC |
258 | if (highest_offset == -1 |
259 | || (current_offset > highest_offset)) | |
260 | highest_offset = current_offset; | |
261 | ||
033a42c2 MK |
262 | /* Add the number of ints we're about to print to |
263 | args_printed. */ | |
8d3b0994 AC |
264 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
265 | } | |
266 | ||
033a42c2 MK |
267 | /* We care about types of symbols, but don't need to |
268 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 269 | case LOC_REGISTER: |
8d3b0994 | 270 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
271 | case LOC_COMPUTED: |
272 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 273 | default: |
2a2d4dc3 | 274 | break; |
8d3b0994 AC |
275 | } |
276 | ||
277 | /* We have to look up the symbol because arguments can have | |
278 | two entries (one a parameter, one a local) and the one we | |
279 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 280 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
281 | small structure and gcc2 when the argument type is float |
282 | and it is passed as a double and converted to float by | |
283 | the prologue (in the latter case the type of the LOC_ARG | |
284 | symbol is double and the type of the LOC_LOCAL symbol is | |
285 | float). */ | |
033a42c2 MK |
286 | /* But if the parameter name is null, don't try it. Null |
287 | parameter names occur on the RS/6000, for traceback | |
288 | tables. FIXME, should we even print them? */ | |
8d3b0994 AC |
289 | |
290 | if (*DEPRECATED_SYMBOL_NAME (sym)) | |
291 | { | |
292 | struct symbol *nsym; | |
033a42c2 | 293 | nsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym), |
2570f2b7 | 294 | b, VAR_DOMAIN, NULL); |
55765a25 | 295 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
296 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
297 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 298 | { |
033a42c2 MK |
299 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
300 | that it was passed on the stack and loaded into a | |
301 | register, or passed in a register and stored in a | |
302 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
303 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
304 | |
305 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
306 | |
307 | (1) Because find_saved_registers may be slow for | |
308 | remote debugging. | |
309 | ||
310 | (2) Because registers are often re-used and stack | |
311 | slots rarely (never?) are. Therefore using | |
312 | the stack slot is much less likely to print | |
313 | garbage. | |
8d3b0994 AC |
314 | |
315 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
316 | |
317 | (1) So that the backtrace prints the same value | |
318 | as "print foo". I see no compelling reason | |
319 | why this needs to be the case; having the | |
320 | backtrace print the value which was passed | |
321 | in, and "print foo" print the value as | |
322 | modified within the called function, makes | |
323 | perfect sense to me. | |
324 | ||
325 | Additional note: It might be nice if "info args" | |
326 | displayed both values. | |
327 | ||
328 | One more note: There is a case with SPARC | |
329 | structure passing where we need to use the | |
330 | LOC_REGISTER, but this is dealt with by creating | |
331 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
332 | |
333 | /* Leave sym (the LOC_ARG) alone. */ | |
334 | ; | |
335 | } | |
336 | else | |
337 | sym = nsym; | |
338 | } | |
339 | ||
340 | /* Print the current arg. */ | |
341 | if (!first) | |
342 | ui_out_text (uiout, ", "); | |
343 | ui_out_wrap_hint (uiout, " "); | |
344 | ||
345 | annotate_arg_begin (); | |
346 | ||
347 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
348 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
033a42c2 MK |
349 | SYMBOL_LANGUAGE (sym), |
350 | DMGL_PARAMS | DMGL_ANSI); | |
8d3b0994 AC |
351 | ui_out_field_stream (uiout, "name", stb); |
352 | annotate_arg_name_end (); | |
353 | ui_out_text (uiout, "="); | |
354 | ||
88408340 JB |
355 | if (print_this_frame_argument_p (sym)) |
356 | { | |
357 | /* Avoid value_print because it will deref ref parameters. | |
358 | We just want to print their addresses. Print ??? for | |
359 | args whose address we do not know. We pass 2 as | |
360 | "recurse" to val_print because our standard indentation | |
361 | here is 4 spaces, and val_print indents 2 for each | |
362 | recurse. */ | |
363 | val = read_var_value (sym, frame); | |
364 | ||
365 | annotate_arg_value (val == NULL ? NULL : value_type (val)); | |
366 | ||
367 | if (val) | |
368 | { | |
d8ca156b JB |
369 | const struct language_defn *language; |
370 | ||
371 | /* Use the appropriate language to display our symbol, | |
372 | unless the user forced the language to a specific | |
373 | language. */ | |
374 | if (language_mode == language_mode_auto) | |
375 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
376 | else | |
377 | language = current_language; | |
378 | ||
88408340 | 379 | common_val_print (val, stb->stream, 0, 0, 2, |
d8ca156b | 380 | Val_no_prettyprint, language); |
88408340 JB |
381 | ui_out_field_stream (uiout, "value", stb); |
382 | } | |
383 | else | |
384 | ui_out_text (uiout, "???"); | |
385 | } | |
386 | else | |
387 | ui_out_text (uiout, "..."); | |
8d3b0994 | 388 | |
8d3b0994 AC |
389 | |
390 | /* Invoke ui_out_tuple_end. */ | |
391 | do_cleanups (list_chain); | |
392 | ||
393 | annotate_arg_end (); | |
394 | ||
395 | first = 0; | |
396 | } | |
397 | } | |
398 | ||
399 | /* Don't print nameless args in situations where we don't know | |
400 | enough about the stack to find them. */ | |
401 | if (num != -1) | |
402 | { | |
403 | long start; | |
404 | ||
405 | if (highest_offset == -1) | |
7500260a | 406 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
407 | else |
408 | start = highest_offset; | |
409 | ||
033a42c2 | 410 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
411 | first, stream); |
412 | } | |
033a42c2 | 413 | |
8d3b0994 AC |
414 | do_cleanups (old_chain); |
415 | } | |
416 | ||
033a42c2 | 417 | /* Stub for catch_errors. */ |
c906108c SS |
418 | |
419 | static int | |
4efb68b1 | 420 | print_args_stub (void *args) |
c906108c | 421 | { |
033a42c2 | 422 | struct print_args_args *p = args; |
12368003 | 423 | struct gdbarch *gdbarch = get_frame_arch (p->frame); |
c906108c | 424 | int numargs; |
c906108c | 425 | |
12368003 | 426 | if (gdbarch_frame_num_args_p (gdbarch)) |
983a287a | 427 | { |
12368003 | 428 | numargs = gdbarch_frame_num_args (gdbarch, p->frame); |
983a287a AC |
429 | gdb_assert (numargs >= 0); |
430 | } | |
431 | else | |
432 | numargs = -1; | |
033a42c2 | 433 | print_frame_args (p->func, p->frame, numargs, p->stream); |
c906108c SS |
434 | return 0; |
435 | } | |
436 | ||
033a42c2 MK |
437 | /* Set the current source and line to the location given by frame |
438 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
439 | line is in the center of the next 'list'. */ | |
c789492a | 440 | |
7abfe014 | 441 | void |
033a42c2 | 442 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
443 | { |
444 | struct symtab_and_line sal; | |
445 | ||
033a42c2 | 446 | find_frame_sal (frame, &sal); |
c789492a FL |
447 | if (sal.symtab) |
448 | { | |
449 | if (center) | |
450 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
451 | set_current_source_symtab_and_line (&sal); | |
452 | } | |
453 | } | |
454 | ||
033a42c2 MK |
455 | /* Print information about frame FRAME. The output is format according |
456 | to PRINT_LEVEL and PRINT_WHAT and PRINT ARGS. The meaning of | |
457 | PRINT_WHAT is: | |
458 | ||
459 | SRC_LINE: Print only source line. | |
460 | LOCATION: Print only location. | |
461 | LOC_AND_SRC: Print location and source line. | |
462 | ||
463 | Used in "where" output, and to emit breakpoint or step | |
464 | messages. */ | |
c906108c | 465 | |
7789c6f5 | 466 | void |
033a42c2 | 467 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 468 | enum print_what print_what, int print_args) |
c906108c SS |
469 | { |
470 | struct symtab_and_line sal; | |
c5394b80 JM |
471 | int source_print; |
472 | int location_print; | |
c906108c | 473 | |
033a42c2 MK |
474 | if (get_frame_type (frame) == DUMMY_FRAME |
475 | || get_frame_type (frame) == SIGTRAMP_FRAME) | |
c906108c | 476 | { |
075559bc AC |
477 | struct cleanup *uiout_cleanup |
478 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 479 | |
033a42c2 MK |
480 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
481 | get_frame_pc (frame)); | |
6a3fe0a4 | 482 | |
c906108c | 483 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 484 | to list for this frame. */ |
0faf0076 | 485 | if (print_level) |
52c6a6ac JJ |
486 | { |
487 | ui_out_text (uiout, "#"); | |
0faf0076 | 488 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 489 | frame_relative_level (frame)); |
52c6a6ac | 490 | } |
075559bc | 491 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 492 | { |
075559bc | 493 | annotate_frame_address (); |
033a42c2 | 494 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (frame)); |
075559bc | 495 | annotate_frame_address_end (); |
52c6a6ac | 496 | } |
6a3fe0a4 | 497 | |
033a42c2 | 498 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
499 | { |
500 | annotate_function_call (); | |
501 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
502 | } | |
033a42c2 | 503 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
504 | { |
505 | annotate_signal_handler_caller (); | |
506 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
507 | } | |
508 | ui_out_text (uiout, "\n"); | |
c906108c | 509 | annotate_frame_end (); |
075559bc AC |
510 | |
511 | do_cleanups (uiout_cleanup); | |
c906108c SS |
512 | return; |
513 | } | |
514 | ||
033a42c2 MK |
515 | /* If FRAME is not the innermost frame, that normally means that |
516 | FRAME->pc points to *after* the call instruction, and we want to | |
517 | get the line containing the call, never the next line. But if | |
518 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
519 | next frame was not entered as the result of a call, and we want | |
520 | to get the line containing FRAME->pc. */ | |
521 | find_frame_sal (frame, &sal); | |
c906108c | 522 | |
0faf0076 AC |
523 | location_print = (print_what == LOCATION |
524 | || print_what == LOC_AND_ADDRESS | |
525 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
526 | |
527 | if (location_print || !sal.symtab) | |
033a42c2 | 528 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 529 | |
0faf0076 | 530 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 531 | |
c5394b80 JM |
532 | if (source_print && sal.symtab) |
533 | { | |
534 | int done = 0; | |
0faf0076 | 535 | int mid_statement = ((print_what == SRC_LINE) |
033a42c2 | 536 | && (get_frame_pc (frame) != sal.pc)); |
c5394b80 JM |
537 | |
538 | if (annotation_level) | |
539 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 540 | get_frame_pc (frame)); |
c5394b80 JM |
541 | if (!done) |
542 | { | |
9a4105ab | 543 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
544 | deprecated_print_frame_info_listing_hook (sal.symtab, |
545 | sal.line, | |
546 | sal.line + 1, 0); | |
ba4bbdcb | 547 | else |
c5394b80 | 548 | { |
ba4bbdcb KS |
549 | /* We used to do this earlier, but that is clearly |
550 | wrong. This function is used by many different | |
551 | parts of gdb, including normal_stop in infrun.c, | |
552 | which uses this to print out the current PC | |
553 | when we stepi/nexti into the middle of a source | |
554 | line. Only the command line really wants this | |
555 | behavior. Other UIs probably would like the | |
cbd3c883 | 556 | ability to decide for themselves if it is desired. */ |
ba4bbdcb KS |
557 | if (addressprint && mid_statement) |
558 | { | |
033a42c2 | 559 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (frame)); |
ba4bbdcb | 560 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
561 | } |
562 | ||
563 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 564 | } |
c5394b80 | 565 | } |
c5394b80 JM |
566 | } |
567 | ||
0faf0076 | 568 | if (print_what != LOCATION) |
033a42c2 | 569 | set_default_breakpoint (1, get_frame_pc (frame), sal.symtab, sal.line); |
c5394b80 JM |
570 | |
571 | annotate_frame_end (); | |
572 | ||
573 | gdb_flush (gdb_stdout); | |
574 | } | |
575 | ||
576 | static void | |
033a42c2 MK |
577 | print_frame (struct frame_info *frame, int print_level, |
578 | enum print_what print_what, int print_args, | |
c5394b80 JM |
579 | struct symtab_and_line sal) |
580 | { | |
581 | struct symbol *func; | |
033a42c2 | 582 | char *funname = NULL; |
c5394b80 | 583 | enum language funlang = language_unknown; |
8b93c638 | 584 | struct ui_stream *stb; |
033a42c2 | 585 | struct cleanup *old_chain, *list_chain; |
8b93c638 JM |
586 | |
587 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 588 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 589 | |
033a42c2 | 590 | func = find_pc_function (get_frame_address_in_block (frame)); |
c906108c SS |
591 | if (func) |
592 | { | |
593 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
594 | function (when we are in the first function in a file which |
595 | is compiled without debugging symbols, the previous function | |
596 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
597 | that is supposed to tell us where the file with debugging |
598 | symbols ends has been truncated by ar because it is longer | |
599 | than 15 characters). This also occurs if the user uses asm() | |
600 | to create a function but not stabs for it (in a file compiled | |
601 | with -g). | |
c5aa993b JM |
602 | |
603 | So look in the minimal symbol tables as well, and if it comes | |
604 | up with a larger address for the function use that instead. | |
033a42c2 MK |
605 | I don't think this can ever cause any problems; there |
606 | shouldn't be any minimal symbols in the middle of a function; | |
607 | if this is ever changed many parts of GDB will need to be | |
608 | changed (and we'll create a find_pc_minimal_function or some | |
609 | such). */ | |
610 | ||
611 | struct minimal_symbol *msymbol = | |
612 | lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 613 | |
c906108c | 614 | if (msymbol != NULL |
c5aa993b | 615 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
616 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
617 | { | |
c906108c SS |
618 | /* We also don't know anything about the function besides |
619 | its address and name. */ | |
620 | func = 0; | |
22abf04a | 621 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
622 | funlang = SYMBOL_LANGUAGE (msymbol); |
623 | } | |
624 | else | |
625 | { | |
22abf04a | 626 | funname = DEPRECATED_SYMBOL_NAME (func); |
c906108c | 627 | funlang = SYMBOL_LANGUAGE (func); |
c5aa993b JM |
628 | if (funlang == language_cplus) |
629 | { | |
033a42c2 MK |
630 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
631 | to display the demangled name that we already have | |
632 | stored in the symbol table, but we stored a version | |
633 | with DMGL_PARAMS turned on, and here we don't want to | |
634 | display parameters. So call the demangler again, with | |
635 | DMGL_ANSI only. | |
636 | ||
637 | Yes, printf_symbol_filtered() will again try to | |
638 | demangle the name on the fly, but the issue is that | |
639 | if cplus_demangle() fails here, it will fail there | |
640 | too. So we want to catch the failure (where DEMANGLED | |
641 | is NULL below) here, while we still have our hands on | |
642 | the function symbol.) */ | |
643 | char *demangled = cplus_demangle (funname, DMGL_ANSI); | |
c5aa993b | 644 | if (demangled == NULL) |
c5394b80 | 645 | /* If the demangler fails, try the demangled name from |
033a42c2 MK |
646 | the symbol table. That'll have parameters, but |
647 | that's preferable to displaying a mangled name. */ | |
de5ad195 | 648 | funname = SYMBOL_PRINT_NAME (func); |
f91162e1 MS |
649 | else |
650 | xfree (demangled); | |
c5aa993b | 651 | } |
c906108c SS |
652 | } |
653 | } | |
654 | else | |
655 | { | |
033a42c2 MK |
656 | struct minimal_symbol *msymbol = |
657 | lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
658 | ||
c906108c SS |
659 | if (msymbol != NULL) |
660 | { | |
22abf04a | 661 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
662 | funlang = SYMBOL_LANGUAGE (msymbol); |
663 | } | |
664 | } | |
665 | ||
033a42c2 MK |
666 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
667 | get_frame_pc (frame)); | |
c5394b80 | 668 | |
666547aa | 669 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 670 | |
0faf0076 | 671 | if (print_level) |
8b93c638 | 672 | { |
8b93c638 | 673 | ui_out_text (uiout, "#"); |
0faf0076 | 674 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 675 | frame_relative_level (frame)); |
8b93c638 | 676 | } |
c5394b80 | 677 | if (addressprint) |
033a42c2 | 678 | if (get_frame_pc (frame) != sal.pc || !sal.symtab |
0faf0076 | 679 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
680 | { |
681 | annotate_frame_address (); | |
033a42c2 | 682 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (frame)); |
8b93c638 JM |
683 | annotate_frame_address_end (); |
684 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
685 | } |
686 | annotate_frame_function_name (); | |
033a42c2 MK |
687 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
688 | funlang, DMGL_ANSI); | |
8b93c638 JM |
689 | ui_out_field_stream (uiout, "func", stb); |
690 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
691 | annotate_frame_args (); |
692 | ||
8b93c638 | 693 | ui_out_text (uiout, " ("); |
0faf0076 | 694 | if (print_args) |
c906108c | 695 | { |
c5394b80 | 696 | struct print_args_args args; |
d493eb33 | 697 | struct cleanup *args_list_chain; |
033a42c2 | 698 | args.frame = frame; |
c5394b80 JM |
699 | args.func = func; |
700 | args.stream = gdb_stdout; | |
68c81b54 | 701 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
5c3ce3f7 | 702 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ERROR); |
033a42c2 MK |
703 | /* FIXME: ARGS must be a list. If one argument is a string it |
704 | will have " that will not be properly escaped. */ | |
666547aa | 705 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 706 | do_cleanups (args_list_chain); |
c5394b80 JM |
707 | QUIT; |
708 | } | |
8b93c638 | 709 | ui_out_text (uiout, ")"); |
c5394b80 JM |
710 | if (sal.symtab && sal.symtab->filename) |
711 | { | |
712 | annotate_frame_source_begin (); | |
8b93c638 JM |
713 | ui_out_wrap_hint (uiout, " "); |
714 | ui_out_text (uiout, " at "); | |
715 | annotate_frame_source_file (); | |
716 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
717 | if (ui_out_is_mi_like_p (uiout)) |
718 | { | |
719 | const char *fullname = symtab_to_fullname (sal.symtab); | |
720 | if (fullname != NULL) | |
721 | ui_out_field_string (uiout, "fullname", fullname); | |
722 | } | |
8b93c638 JM |
723 | annotate_frame_source_file_end (); |
724 | ui_out_text (uiout, ":"); | |
725 | annotate_frame_source_line (); | |
726 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
727 | annotate_frame_source_end (); |
728 | } | |
c906108c | 729 | |
c5394b80 | 730 | if (!funname || (!sal.symtab || !sal.symtab->filename)) |
c906108c | 731 | { |
a77053c2 | 732 | #ifdef PC_SOLIB |
033a42c2 | 733 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 734 | #else |
033a42c2 | 735 | char *lib = solib_address (get_frame_pc (frame)); |
a77053c2 | 736 | #endif |
c5394b80 | 737 | if (lib) |
c906108c | 738 | { |
c5394b80 | 739 | annotate_frame_where (); |
8b93c638 JM |
740 | ui_out_wrap_hint (uiout, " "); |
741 | ui_out_text (uiout, " from "); | |
742 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 743 | } |
c906108c | 744 | } |
e514a9d6 | 745 | |
666547aa | 746 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 747 | do_cleanups (list_chain); |
8b93c638 JM |
748 | ui_out_text (uiout, "\n"); |
749 | do_cleanups (old_chain); | |
c906108c SS |
750 | } |
751 | \f | |
c5aa993b | 752 | |
033a42c2 MK |
753 | /* Read a frame specification in whatever the appropriate format is |
754 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
755 | specification is in any way invalid (so this function never returns | |
756 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
757 | the default selected frame was used. */ | |
c906108c | 758 | |
1c8831c5 AC |
759 | static struct frame_info * |
760 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
761 | int *selected_frame_p) | |
c906108c | 762 | { |
1c8831c5 AC |
763 | int numargs; |
764 | struct value *args[4]; | |
765 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 766 | |
1c8831c5 AC |
767 | if (frame_exp == NULL) |
768 | numargs = 0; | |
769 | else | |
c906108c | 770 | { |
1c8831c5 | 771 | char *addr_string; |
c906108c SS |
772 | struct cleanup *tmp_cleanup; |
773 | ||
1c8831c5 AC |
774 | numargs = 0; |
775 | while (1) | |
c906108c | 776 | { |
1c8831c5 AC |
777 | char *addr_string; |
778 | struct cleanup *cleanup; | |
779 | const char *p; | |
780 | ||
781 | /* Skip leading white space, bail of EOL. */ | |
782 | while (isspace (*frame_exp)) | |
783 | frame_exp++; | |
784 | if (!*frame_exp) | |
785 | break; | |
c906108c | 786 | |
1c8831c5 AC |
787 | /* Parse the argument, extract it, save it. */ |
788 | for (p = frame_exp; | |
789 | *p && !isspace (*p); | |
790 | p++); | |
791 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 792 | frame_exp = p; |
1c8831c5 AC |
793 | cleanup = make_cleanup (xfree, addr_string); |
794 | ||
795 | /* NOTE: Parse and evaluate expression, but do not use | |
796 | functions such as parse_and_eval_long or | |
797 | parse_and_eval_address to also extract the value. | |
798 | Instead value_as_long and value_as_address are used. | |
799 | This avoids problems with expressions that contain | |
800 | side-effects. */ | |
801 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 802 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
803 | args[numargs++] = parse_and_eval (addr_string); |
804 | ||
805 | do_cleanups (cleanup); | |
c906108c SS |
806 | } |
807 | } | |
808 | ||
1c8831c5 AC |
809 | /* If no args, default to the selected frame. */ |
810 | if (numargs == 0) | |
c906108c | 811 | { |
1c8831c5 AC |
812 | if (selected_frame_p != NULL) |
813 | (*selected_frame_p) = 1; | |
814 | return get_selected_frame (message); | |
815 | } | |
c906108c | 816 | |
1c8831c5 AC |
817 | /* None of the remaining use the selected frame. */ |
818 | if (selected_frame_p != NULL) | |
98f276a0 | 819 | (*selected_frame_p) = 0; |
c906108c | 820 | |
1c8831c5 AC |
821 | /* Assume the single arg[0] is an integer, and try using that to |
822 | select a frame relative to current. */ | |
823 | if (numargs == 1) | |
824 | { | |
825 | struct frame_info *fid; | |
826 | int level = value_as_long (args[0]); | |
827 | fid = find_relative_frame (get_current_frame (), &level); | |
828 | if (level == 0) | |
829 | /* find_relative_frame was successful */ | |
830 | return fid; | |
831 | } | |
c906108c | 832 | |
1c8831c5 AC |
833 | /* Convert each value into a corresponding address. */ |
834 | { | |
835 | int i; | |
836 | for (i = 0; i < numargs; i++) | |
837 | addrs[i] = value_as_address (args[0]); | |
838 | } | |
c5aa993b | 839 | |
1c8831c5 AC |
840 | /* Assume that the single arg[0] is an address, use that to identify |
841 | a frame with a matching ID. Should this also accept stack/pc or | |
842 | stack/pc/special. */ | |
843 | if (numargs == 1) | |
844 | { | |
845 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
846 | struct frame_info *fid; | |
847 | ||
1c8831c5 AC |
848 | /* If (s)he specifies the frame with an address, he deserves |
849 | what (s)he gets. Still, give the highest one that matches. | |
850 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
851 | know). */ | |
852 | for (fid = get_current_frame (); | |
853 | fid != NULL; | |
854 | fid = get_prev_frame (fid)) | |
855 | { | |
856 | if (frame_id_eq (id, get_frame_id (fid))) | |
857 | { | |
eb2f4a08 DJ |
858 | while (frame_id_eq (id, frame_unwind_id (fid))) |
859 | fid = get_prev_frame (fid); | |
1c8831c5 AC |
860 | return fid; |
861 | } | |
862 | } | |
c906108c SS |
863 | } |
864 | ||
1c8831c5 AC |
865 | /* We couldn't identify the frame as an existing frame, but |
866 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
867 | if (numargs == 1) |
868 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
869 | else if (numargs == 2) |
870 | return create_new_frame (addrs[0], addrs[1]); | |
871 | else | |
8a3fe4f8 | 872 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
873 | } |
874 | ||
9c833c82 | 875 | static struct frame_info * |
1c8831c5 AC |
876 | parse_frame_specification (char *frame_exp) |
877 | { | |
878 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
879 | } |
880 | ||
033a42c2 MK |
881 | /* Print verbosely the selected frame or the frame at address |
882 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
883 | |
884 | static void | |
fba45db2 | 885 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
886 | { |
887 | struct frame_info *fi; | |
888 | struct symtab_and_line sal; | |
889 | struct symbol *func; | |
890 | struct symtab *s; | |
891 | struct frame_info *calling_frame_info; | |
892 | int i, count, numregs; | |
893 | char *funname = 0; | |
894 | enum language funlang = language_unknown; | |
82de1e5b | 895 | const char *pc_regname; |
1c8831c5 | 896 | int selected_frame_p; |
7500260a | 897 | struct gdbarch *gdbarch; |
c906108c | 898 | |
1c8831c5 | 899 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 900 | gdbarch = get_frame_arch (fi); |
c906108c | 901 | |
82de1e5b AC |
902 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
903 | is not a good name. */ | |
12368003 | 904 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 905 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
906 | easily not match that of the internal value returned by |
907 | get_frame_pc(). */ | |
12368003 | 908 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 909 | else |
3e8c568d | 910 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
911 | architectures will often have a hardware register called "pc", |
912 | and that register's value, again, can easily not match | |
913 | get_frame_pc(). */ | |
914 | pc_regname = "pc"; | |
915 | ||
1058bca7 | 916 | find_frame_sal (fi, &sal); |
c906108c | 917 | func = get_frame_function (fi); |
1058bca7 | 918 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
033a42c2 | 919 | the same value? */ |
bdd78e62 | 920 | s = find_pc_symtab (get_frame_pc (fi)); |
c906108c SS |
921 | if (func) |
922 | { | |
033a42c2 MK |
923 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, to |
924 | display the demangled name that we already have stored in the | |
925 | symbol table, but we stored a version with DMGL_PARAMS turned | |
926 | on, and here we don't want to display parameters. So call the | |
927 | demangler again, with DMGL_ANSI only. | |
928 | ||
929 | Yes, printf_symbol_filtered() will again try to demangle the | |
930 | name on the fly, but the issue is that if cplus_demangle() | |
931 | fails here, it will fail there too. So we want to catch the | |
932 | failure (where DEMANGLED is NULL below) here, while we still | |
933 | have our hands on the function symbol.) */ | |
22abf04a | 934 | funname = DEPRECATED_SYMBOL_NAME (func); |
c5aa993b JM |
935 | funlang = SYMBOL_LANGUAGE (func); |
936 | if (funlang == language_cplus) | |
937 | { | |
033a42c2 MK |
938 | char *demangled = cplus_demangle (funname, DMGL_ANSI); |
939 | /* If the demangler fails, try the demangled name from the | |
940 | symbol table. That'll have parameters, but that's | |
941 | preferable to displaying a mangled name. */ | |
c5aa993b | 942 | if (demangled == NULL) |
de5ad195 | 943 | funname = SYMBOL_PRINT_NAME (func); |
f91162e1 MS |
944 | else |
945 | xfree (demangled); | |
c5aa993b | 946 | } |
c906108c SS |
947 | } |
948 | else | |
949 | { | |
033a42c2 MK |
950 | struct minimal_symbol *msymbol; |
951 | ||
952 | msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi)); | |
c906108c SS |
953 | if (msymbol != NULL) |
954 | { | |
22abf04a | 955 | funname = DEPRECATED_SYMBOL_NAME (msymbol); |
c906108c SS |
956 | funlang = SYMBOL_LANGUAGE (msymbol); |
957 | } | |
958 | } | |
959 | calling_frame_info = get_prev_frame (fi); | |
960 | ||
1c8831c5 | 961 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 962 | { |
a3f17187 | 963 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 964 | frame_relative_level (fi)); |
c906108c SS |
965 | } |
966 | else | |
967 | { | |
a3f17187 | 968 | printf_filtered (_("Stack frame at ")); |
c906108c | 969 | } |
ed49a04f | 970 | fputs_filtered (paddress (get_frame_base (fi)), gdb_stdout); |
9c833c82 | 971 | printf_filtered (":\n"); |
82de1e5b | 972 | printf_filtered (" %s = ", pc_regname); |
ed49a04f | 973 | fputs_filtered (paddress (get_frame_pc (fi)), gdb_stdout); |
c906108c SS |
974 | |
975 | wrap_here (" "); | |
976 | if (funname) | |
977 | { | |
978 | printf_filtered (" in "); | |
979 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
980 | DMGL_ANSI | DMGL_PARAMS); | |
981 | } | |
982 | wrap_here (" "); | |
983 | if (sal.symtab) | |
984 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
985 | puts_filtered ("; "); | |
986 | wrap_here (" "); | |
82de1e5b | 987 | printf_filtered ("saved %s ", pc_regname); |
eb2f4a08 | 988 | fputs_filtered (paddress (frame_pc_unwind (fi)), gdb_stdout); |
c906108c SS |
989 | printf_filtered ("\n"); |
990 | ||
55feb689 DJ |
991 | if (calling_frame_info == NULL) |
992 | { | |
993 | enum unwind_stop_reason reason; | |
994 | ||
995 | reason = get_frame_unwind_stop_reason (fi); | |
996 | if (reason != UNWIND_NO_REASON) | |
997 | printf_filtered (_(" Outermost frame: %s\n"), | |
998 | frame_stop_reason_string (reason)); | |
999 | } | |
1000 | ||
c906108c SS |
1001 | if (calling_frame_info) |
1002 | { | |
1003 | printf_filtered (" called by frame at "); | |
ed49a04f MD |
1004 | fputs_filtered (paddress (get_frame_base (calling_frame_info)), |
1005 | gdb_stdout); | |
c906108c | 1006 | } |
75e3c1f9 | 1007 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1008 | puts_filtered (","); |
1009 | wrap_here (" "); | |
75e3c1f9 | 1010 | if (get_next_frame (fi)) |
c906108c SS |
1011 | { |
1012 | printf_filtered (" caller of frame at "); | |
ed49a04f MD |
1013 | fputs_filtered (paddress (get_frame_base (get_next_frame (fi))), |
1014 | gdb_stdout); | |
c906108c | 1015 | } |
75e3c1f9 | 1016 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1017 | puts_filtered ("\n"); |
55feb689 | 1018 | |
c906108c | 1019 | if (s) |
1058bca7 AC |
1020 | printf_filtered (" source language %s.\n", |
1021 | language_str (s->language)); | |
c906108c | 1022 | |
c906108c SS |
1023 | { |
1024 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1025 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1026 | /* Number of args for this frame, or -1 if unknown. */ |
1027 | int numargs; | |
1028 | ||
1029 | if (arg_list == 0) | |
1030 | printf_filtered (" Arglist at unknown address.\n"); | |
1031 | else | |
1032 | { | |
1033 | printf_filtered (" Arglist at "); | |
ed49a04f | 1034 | fputs_filtered (paddress (arg_list), gdb_stdout); |
c906108c SS |
1035 | printf_filtered (","); |
1036 | ||
7500260a | 1037 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1038 | { |
1039 | numargs = -1; | |
1040 | puts_filtered (" args: "); | |
1041 | } | |
c906108c | 1042 | else |
983a287a | 1043 | { |
7500260a | 1044 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1045 | gdb_assert (numargs >= 0); |
1046 | if (numargs == 0) | |
1047 | puts_filtered (" no args."); | |
1048 | else if (numargs == 1) | |
1049 | puts_filtered (" 1 arg: "); | |
1050 | else | |
1051 | printf_filtered (" %d args: ", numargs); | |
1052 | } | |
c906108c SS |
1053 | print_frame_args (func, fi, numargs, gdb_stdout); |
1054 | puts_filtered ("\n"); | |
1055 | } | |
1056 | } | |
1057 | { | |
1058 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1059 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1060 | |
1061 | if (arg_list == 0) | |
1062 | printf_filtered (" Locals at unknown address,"); | |
1063 | else | |
1064 | { | |
1065 | printf_filtered (" Locals at "); | |
ed49a04f | 1066 | fputs_filtered (paddress (arg_list), gdb_stdout); |
c906108c SS |
1067 | printf_filtered (","); |
1068 | } | |
1069 | } | |
1070 | ||
4f460812 AC |
1071 | /* Print as much information as possible on the location of all the |
1072 | registers. */ | |
1073 | { | |
1074 | enum lval_type lval; | |
1075 | int optimized; | |
1076 | CORE_ADDR addr; | |
1077 | int realnum; | |
1078 | int count; | |
1079 | int i; | |
1080 | int need_nl = 1; | |
1081 | ||
1082 | /* The sp is special; what's displayed isn't the save address, but | |
1083 | the value of the previous frame's sp. This is a legacy thing, | |
1084 | at one stage the frame cached the previous frame's SP instead | |
1085 | of its address, hence it was easiest to just display the cached | |
1086 | value. */ | |
7500260a | 1087 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1088 | { |
1089 | /* Find out the location of the saved stack pointer with out | |
1090 | actually evaluating it. */ | |
7500260a | 1091 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1092 | &optimized, &lval, &addr, |
4f460812 AC |
1093 | &realnum, NULL); |
1094 | if (!optimized && lval == not_lval) | |
c906108c | 1095 | { |
10c42a71 | 1096 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1097 | CORE_ADDR sp; |
7500260a | 1098 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1099 | &optimized, &lval, &addr, |
4f460812 | 1100 | &realnum, value); |
af1342ab AC |
1101 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1102 | stack pointer was packed as an unsigned integer. That | |
1103 | may or may not be valid. */ | |
3e8c568d | 1104 | sp = extract_unsigned_integer (value, |
7500260a UW |
1105 | register_size (gdbarch, |
1106 | gdbarch_sp_regnum (gdbarch))); | |
4f460812 | 1107 | printf_filtered (" Previous frame's sp is "); |
ed49a04f | 1108 | fputs_filtered (paddress (sp), gdb_stdout); |
4f460812 AC |
1109 | printf_filtered ("\n"); |
1110 | need_nl = 0; | |
c906108c | 1111 | } |
4f460812 AC |
1112 | else if (!optimized && lval == lval_memory) |
1113 | { | |
1114 | printf_filtered (" Previous frame's sp at "); | |
ed49a04f | 1115 | fputs_filtered (paddress (addr), gdb_stdout); |
4f460812 AC |
1116 | printf_filtered ("\n"); |
1117 | need_nl = 0; | |
1118 | } | |
1119 | else if (!optimized && lval == lval_register) | |
1120 | { | |
1121 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1122 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1123 | need_nl = 0; |
1124 | } | |
1125 | /* else keep quiet. */ | |
1126 | } | |
1127 | ||
1128 | count = 0; | |
7500260a UW |
1129 | numregs = gdbarch_num_regs (gdbarch) |
1130 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1131 | for (i = 0; i < numregs; i++) |
7500260a UW |
1132 | if (i != gdbarch_sp_regnum (gdbarch) |
1133 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1134 | { |
1135 | /* Find out the location of the saved register without | |
1136 | fetching the corresponding value. */ | |
1137 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
1138 | NULL); | |
1139 | /* For moment, only display registers that were saved on the | |
1140 | stack. */ | |
1141 | if (!optimized && lval == lval_memory) | |
1142 | { | |
1143 | if (count == 0) | |
1144 | puts_filtered (" Saved registers:\n "); | |
1145 | else | |
1146 | puts_filtered (","); | |
1147 | wrap_here (" "); | |
c9f4d572 | 1148 | printf_filtered (" %s at ", |
7500260a | 1149 | gdbarch_register_name (gdbarch, i)); |
ed49a04f | 1150 | fputs_filtered (paddress (addr), gdb_stdout); |
4f460812 AC |
1151 | count++; |
1152 | } | |
1153 | } | |
1154 | if (count || need_nl) | |
c906108c | 1155 | puts_filtered ("\n"); |
4f460812 | 1156 | } |
c906108c SS |
1157 | } |
1158 | ||
033a42c2 MK |
1159 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1160 | frames. */ | |
c906108c SS |
1161 | |
1162 | static void | |
fba45db2 | 1163 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1164 | { |
1165 | struct frame_info *fi; | |
52f0bd74 AC |
1166 | int count; |
1167 | int i; | |
1168 | struct frame_info *trailing; | |
1169 | int trailing_level; | |
c906108c SS |
1170 | |
1171 | if (!target_has_stack) | |
8a3fe4f8 | 1172 | error (_("No stack.")); |
c906108c | 1173 | |
033a42c2 MK |
1174 | /* The following code must do two things. First, it must set the |
1175 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1176 | printing. Second, it must set the variable count to the number |
1177 | of frames which we should print, or -1 if all of them. */ | |
1178 | trailing = get_current_frame (); | |
d082b2bb AC |
1179 | |
1180 | /* The target can be in a state where there is no valid frames | |
1181 | (e.g., just connected). */ | |
1182 | if (trailing == NULL) | |
8a3fe4f8 | 1183 | error (_("No stack.")); |
d082b2bb | 1184 | |
c906108c SS |
1185 | trailing_level = 0; |
1186 | if (count_exp) | |
1187 | { | |
bb518678 | 1188 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1189 | if (count < 0) |
1190 | { | |
1191 | struct frame_info *current; | |
1192 | ||
1193 | count = -count; | |
1194 | ||
1195 | current = trailing; | |
1196 | while (current && count--) | |
1197 | { | |
1198 | QUIT; | |
1199 | current = get_prev_frame (current); | |
1200 | } | |
c5aa993b | 1201 | |
033a42c2 MK |
1202 | /* Will stop when CURRENT reaches the top of the stack. |
1203 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1204 | while (current) |
1205 | { | |
1206 | QUIT; | |
1207 | trailing = get_prev_frame (trailing); | |
1208 | current = get_prev_frame (current); | |
1209 | trailing_level++; | |
1210 | } | |
c5aa993b | 1211 | |
c906108c SS |
1212 | count = -1; |
1213 | } | |
1214 | } | |
1215 | else | |
1216 | count = -1; | |
1217 | ||
1218 | if (info_verbose) | |
1219 | { | |
1220 | struct partial_symtab *ps; | |
c5aa993b | 1221 | |
033a42c2 MK |
1222 | /* Read in symbols for all of the frames. Need to do this in a |
1223 | separate pass so that "Reading in symbols for xxx" messages | |
1224 | don't screw up the appearance of the backtrace. Also if | |
1225 | people have strong opinions against reading symbols for | |
c5aa993b | 1226 | backtrace this may have to be an option. */ |
c906108c | 1227 | i = count; |
033a42c2 | 1228 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c SS |
1229 | { |
1230 | QUIT; | |
c4a09524 | 1231 | ps = find_pc_psymtab (get_frame_address_in_block (fi)); |
c906108c | 1232 | if (ps) |
033a42c2 | 1233 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in. */ |
c906108c SS |
1234 | } |
1235 | } | |
1236 | ||
033a42c2 | 1237 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1238 | { |
1239 | QUIT; | |
1240 | ||
1241 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1242 | means further attempts to backtrace would fail (on the other |
1243 | hand, perhaps the code does or could be fixed to make sure | |
1244 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1245 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1246 | if (show_locals) |
c5aa993b | 1247 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1248 | |
1249 | /* Save the last frame to check for error conditions. */ | |
1250 | trailing = fi; | |
c906108c SS |
1251 | } |
1252 | ||
1253 | /* If we've stopped before the end, mention that. */ | |
1254 | if (fi && from_tty) | |
a3f17187 | 1255 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1256 | |
1257 | /* If we've run out of frames, and the reason appears to be an error | |
1258 | condition, print it. */ | |
1259 | if (fi == NULL && trailing != NULL) | |
1260 | { | |
1261 | enum unwind_stop_reason reason; | |
1262 | ||
1263 | reason = get_frame_unwind_stop_reason (trailing); | |
1264 | if (reason > UNWIND_FIRST_ERROR) | |
1265 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1266 | frame_stop_reason_string (reason)); | |
1267 | } | |
c906108c SS |
1268 | } |
1269 | ||
d75e3c94 | 1270 | struct backtrace_command_args |
033a42c2 MK |
1271 | { |
1272 | char *count_exp; | |
1273 | int show_locals; | |
1274 | int from_tty; | |
1275 | }; | |
1276 | ||
1277 | /* Stub for catch_errors. */ | |
d75e3c94 | 1278 | |
d75e3c94 JJ |
1279 | static int |
1280 | backtrace_command_stub (void *data) | |
1281 | { | |
033a42c2 | 1282 | struct backtrace_command_args *args = data; |
d75e3c94 JJ |
1283 | backtrace_command_1 (args->count_exp, args->show_locals, args->from_tty); |
1284 | return 0; | |
1285 | } | |
1286 | ||
c906108c | 1287 | static void |
fba45db2 | 1288 | backtrace_command (char *arg, int from_tty) |
c906108c | 1289 | { |
033a42c2 MK |
1290 | struct cleanup *old_chain = NULL; |
1291 | int fulltrace_arg = -1, arglen = 0, argc = 0; | |
d75e3c94 | 1292 | struct backtrace_command_args btargs; |
c906108c | 1293 | |
033a42c2 | 1294 | if (arg) |
c906108c | 1295 | { |
033a42c2 | 1296 | char **argv; |
c906108c SS |
1297 | int i; |
1298 | ||
c5aa993b | 1299 | argv = buildargv (arg); |
7a292a7a | 1300 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1301 | argc = 0; |
033a42c2 | 1302 | for (i = 0; argv[i]; i++) |
c5aa993b | 1303 | { |
745b8ca0 | 1304 | unsigned int j; |
c5aa993b | 1305 | |
033a42c2 | 1306 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1307 | argv[i][j] = tolower (argv[i][j]); |
1308 | ||
033a42c2 MK |
1309 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1310 | fulltrace_arg = argc; | |
c5aa993b JM |
1311 | else |
1312 | { | |
033a42c2 | 1313 | arglen += strlen (argv[i]); |
c5aa993b | 1314 | argc++; |
c5aa993b JM |
1315 | } |
1316 | } | |
033a42c2 MK |
1317 | arglen += argc; |
1318 | if (fulltrace_arg >= 0) | |
c5aa993b | 1319 | { |
033a42c2 | 1320 | if (arglen > 0) |
c5aa993b | 1321 | { |
033a42c2 MK |
1322 | arg = xmalloc (arglen + 1); |
1323 | memset (arg, 0, arglen + 1); | |
1324 | for (i = 0; i < (argc + 1); i++) | |
c5aa993b | 1325 | { |
033a42c2 | 1326 | if (i != fulltrace_arg) |
c5aa993b | 1327 | { |
033a42c2 MK |
1328 | strcat (arg, argv[i]); |
1329 | strcat (arg, " "); | |
c5aa993b JM |
1330 | } |
1331 | } | |
1332 | } | |
1333 | else | |
033a42c2 | 1334 | arg = NULL; |
c5aa993b | 1335 | } |
c906108c SS |
1336 | } |
1337 | ||
033a42c2 MK |
1338 | btargs.count_exp = arg; |
1339 | btargs.show_locals = (fulltrace_arg >= 0); | |
d75e3c94 | 1340 | btargs.from_tty = from_tty; |
033a42c2 | 1341 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1342 | |
033a42c2 MK |
1343 | if (fulltrace_arg >= 0 && arglen > 0) |
1344 | xfree (arg); | |
c906108c SS |
1345 | |
1346 | if (old_chain) | |
c5aa993b | 1347 | do_cleanups (old_chain); |
c906108c SS |
1348 | } |
1349 | ||
1350 | static void | |
fba45db2 | 1351 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1352 | { |
d75e3c94 JJ |
1353 | struct backtrace_command_args btargs; |
1354 | btargs.count_exp = arg; | |
1355 | btargs.show_locals = 1; | |
1356 | btargs.from_tty = from_tty; | |
033a42c2 | 1357 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1358 | } |
c906108c | 1359 | \f |
c5aa993b | 1360 | |
033a42c2 | 1361 | /* Print the local variables of a block B active in FRAME on STREAM. |
c906108c SS |
1362 | Return 1 if any variables were printed; 0 otherwise. */ |
1363 | ||
1364 | static int | |
033a42c2 | 1365 | print_block_frame_locals (struct block *b, struct frame_info *frame, |
de4f826b | 1366 | int num_tabs, struct ui_file *stream) |
c906108c | 1367 | { |
de4f826b | 1368 | struct dict_iterator iter; |
de4f826b DC |
1369 | struct symbol *sym; |
1370 | int values_printed = 0; | |
033a42c2 | 1371 | int j; |
c906108c | 1372 | |
de4f826b | 1373 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1374 | { |
c906108c SS |
1375 | switch (SYMBOL_CLASS (sym)) |
1376 | { | |
1377 | case LOC_LOCAL: | |
1378 | case LOC_REGISTER: | |
1379 | case LOC_STATIC: | |
4c2df51b | 1380 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1381 | if (SYMBOL_IS_ARGUMENT (sym)) |
1382 | break; | |
c906108c SS |
1383 | values_printed = 1; |
1384 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1385 | fputs_filtered ("\t", stream); |
de5ad195 | 1386 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c | 1387 | fputs_filtered (" = ", stream); |
033a42c2 | 1388 | print_variable_value (sym, frame, stream); |
c906108c SS |
1389 | fprintf_filtered (stream, "\n"); |
1390 | break; | |
1391 | ||
1392 | default: | |
1393 | /* Ignore symbols which are not locals. */ | |
1394 | break; | |
1395 | } | |
1396 | } | |
033a42c2 | 1397 | |
c906108c SS |
1398 | return values_printed; |
1399 | } | |
1400 | ||
1401 | /* Same, but print labels. */ | |
1402 | ||
1403 | static int | |
fba45db2 | 1404 | print_block_frame_labels (struct block *b, int *have_default, |
aa1ee363 | 1405 | struct ui_file *stream) |
c906108c | 1406 | { |
de4f826b | 1407 | struct dict_iterator iter; |
52f0bd74 AC |
1408 | struct symbol *sym; |
1409 | int values_printed = 0; | |
c906108c | 1410 | |
de4f826b | 1411 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1412 | { |
acd8056e | 1413 | if (strcmp (DEPRECATED_SYMBOL_NAME (sym), "default") == 0) |
c906108c SS |
1414 | { |
1415 | if (*have_default) | |
1416 | continue; | |
1417 | *have_default = 1; | |
1418 | } | |
1419 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1420 | { | |
1421 | struct symtab_and_line sal; | |
1422 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1423 | values_printed = 1; | |
de5ad195 | 1424 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c SS |
1425 | if (addressprint) |
1426 | { | |
1427 | fprintf_filtered (stream, " "); | |
ed49a04f | 1428 | fputs_filtered (paddress (SYMBOL_VALUE_ADDRESS (sym)), stream); |
c906108c SS |
1429 | } |
1430 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1431 | sal.symtab->filename, sal.line); | |
1432 | } | |
1433 | } | |
033a42c2 | 1434 | |
c906108c SS |
1435 | return values_printed; |
1436 | } | |
1437 | ||
033a42c2 MK |
1438 | /* Print on STREAM all the local variables in frame FRAME, including |
1439 | all the blocks active in that frame at its current PC. | |
c906108c | 1440 | |
033a42c2 MK |
1441 | Returns 1 if the job was done, or 0 if nothing was printed because |
1442 | we have no info on the function running in FRAME. */ | |
c906108c SS |
1443 | |
1444 | static void | |
033a42c2 | 1445 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1446 | struct ui_file *stream) |
c906108c | 1447 | { |
033a42c2 | 1448 | struct block *block = get_frame_block (frame, 0); |
52f0bd74 | 1449 | int values_printed = 0; |
c906108c SS |
1450 | |
1451 | if (block == 0) | |
1452 | { | |
1453 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1454 | return; | |
1455 | } | |
c5aa993b | 1456 | |
033a42c2 | 1457 | while (block) |
c906108c | 1458 | { |
033a42c2 | 1459 | if (print_block_frame_locals (block, frame, num_tabs, stream)) |
c906108c | 1460 | values_printed = 1; |
033a42c2 MK |
1461 | /* After handling the function's top-level block, stop. Don't |
1462 | continue to its superblock, the block of per-file symbols. */ | |
c906108c SS |
1463 | if (BLOCK_FUNCTION (block)) |
1464 | break; | |
1465 | block = BLOCK_SUPERBLOCK (block); | |
1466 | } | |
1467 | ||
1468 | if (!values_printed) | |
033a42c2 | 1469 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1470 | } |
1471 | ||
1472 | /* Same, but print labels. */ | |
1473 | ||
1474 | static void | |
033a42c2 | 1475 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1476 | struct ui_file *stream) |
c906108c | 1477 | { |
801e3a5b JB |
1478 | #if 1 |
1479 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1480 | #else | |
52f0bd74 | 1481 | struct blockvector *bl; |
033a42c2 | 1482 | struct block *block = get_frame_block (frame, 0); |
52f0bd74 | 1483 | int values_printed = 0; |
c906108c SS |
1484 | int index, have_default = 0; |
1485 | char *blocks_printed; | |
033a42c2 | 1486 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1487 | |
1488 | if (block == 0) | |
1489 | { | |
1490 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1491 | return; | |
1492 | } | |
1493 | ||
1494 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1495 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1496 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1497 | ||
1498 | while (block != 0) | |
1499 | { | |
1500 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1501 | int last_index; | |
1502 | ||
1503 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1504 | error (_("blockvector blotch")); |
c906108c | 1505 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1506 | error (_("blockvector botch")); |
c906108c SS |
1507 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1508 | index += 1; | |
1509 | ||
1510 | /* Don't print out blocks that have gone by. */ | |
1511 | while (index < last_index | |
1512 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1513 | index++; | |
1514 | ||
1515 | while (index < last_index | |
1516 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1517 | { | |
1518 | if (blocks_printed[index] == 0) | |
1519 | { | |
033a42c2 MK |
1520 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), |
1521 | &have_default, stream)) | |
c906108c SS |
1522 | values_printed = 1; |
1523 | blocks_printed[index] = 1; | |
1524 | } | |
1525 | index++; | |
1526 | } | |
1527 | if (have_default) | |
1528 | return; | |
1529 | if (values_printed && this_level_only) | |
1530 | return; | |
1531 | ||
033a42c2 MK |
1532 | /* After handling the function's top-level block, stop. Don't |
1533 | continue to its superblock, the block of per-file symbols. */ | |
c906108c SS |
1534 | if (BLOCK_FUNCTION (block)) |
1535 | break; | |
1536 | block = BLOCK_SUPERBLOCK (block); | |
1537 | } | |
1538 | ||
1539 | if (!values_printed && !this_level_only) | |
033a42c2 | 1540 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1541 | #endif |
c906108c SS |
1542 | } |
1543 | ||
c906108c | 1544 | void |
fba45db2 | 1545 | locals_info (char *args, int from_tty) |
c906108c | 1546 | { |
033a42c2 | 1547 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1548 | 0, gdb_stdout); |
c906108c SS |
1549 | } |
1550 | ||
1551 | static void | |
fba45db2 | 1552 | catch_info (char *ignore, int from_tty) |
c906108c | 1553 | { |
c5aa993b | 1554 | struct symtab_and_line *sal; |
c906108c | 1555 | |
dfdfb3ca JB |
1556 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1557 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1558 | 0, gdb_stdout); | |
c906108c SS |
1559 | } |
1560 | ||
1561 | static void | |
033a42c2 | 1562 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) |
c906108c | 1563 | { |
033a42c2 | 1564 | struct symbol *func = get_frame_function (frame); |
52f0bd74 | 1565 | struct block *b; |
de4f826b | 1566 | struct dict_iterator iter; |
52f0bd74 AC |
1567 | struct symbol *sym, *sym2; |
1568 | int values_printed = 0; | |
c906108c SS |
1569 | |
1570 | if (func == 0) | |
1571 | { | |
033a42c2 | 1572 | fprintf_filtered (stream, _("No symbol table info available.\n")); |
c906108c SS |
1573 | return; |
1574 | } | |
1575 | ||
1576 | b = SYMBOL_BLOCK_VALUE (func); | |
de4f826b | 1577 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1578 | { |
2a2d4dc3 AS |
1579 | /* Don't worry about things which aren't arguments. */ |
1580 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1581 | { |
c906108c | 1582 | values_printed = 1; |
de5ad195 | 1583 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
c906108c SS |
1584 | fputs_filtered (" = ", stream); |
1585 | ||
1586 | /* We have to look up the symbol because arguments can have | |
1587 | two entries (one a parameter, one a local) and the one we | |
1588 | want is the local, which lookup_symbol will find for us. | |
1589 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1590 | small structure and gcc2 when the argument type is float | |
1591 | and it is passed as a double and converted to float by | |
1592 | the prologue (in the latter case the type of the LOC_ARG | |
1593 | symbol is double and the type of the LOC_LOCAL symbol is | |
1594 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1595 | are not combined in symbol-reading. */ | |
1596 | ||
22abf04a | 1597 | sym2 = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym), |
2570f2b7 | 1598 | b, VAR_DOMAIN, NULL); |
033a42c2 | 1599 | print_variable_value (sym2, frame, stream); |
c906108c | 1600 | fprintf_filtered (stream, "\n"); |
c906108c SS |
1601 | } |
1602 | } | |
033a42c2 | 1603 | |
c906108c | 1604 | if (!values_printed) |
033a42c2 | 1605 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1606 | } |
1607 | ||
1608 | void | |
fba45db2 | 1609 | args_info (char *ignore, int from_tty) |
c906108c | 1610 | { |
033a42c2 | 1611 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1612 | gdb_stdout); |
c906108c SS |
1613 | } |
1614 | ||
1615 | ||
1616 | static void | |
fba45db2 | 1617 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1618 | { |
c5aa993b JM |
1619 | args_info (ignore, from_tty); |
1620 | locals_info (ignore, from_tty); | |
c906108c | 1621 | } |
c906108c | 1622 | \f |
c5aa993b | 1623 | |
033a42c2 MK |
1624 | /* Select frame FRAME. Also print the stack frame and show the source |
1625 | if this is the tui version. */ | |
bedfa57b | 1626 | static void |
033a42c2 | 1627 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1628 | { |
033a42c2 MK |
1629 | select_frame (frame); |
1630 | if (frame) | |
1631 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1632 | } |
c906108c | 1633 | \f |
c906108c | 1634 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1635 | Can return zero under various legitimate circumstances. |
1636 | ||
1637 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1638 | code address within the block returned. We use this to decide | |
1639 | which macros are in scope. */ | |
c906108c SS |
1640 | |
1641 | struct block * | |
ae767bfb | 1642 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1643 | { |
1644 | if (!target_has_stack) | |
1645 | return 0; | |
1646 | ||
8ea051c5 PA |
1647 | if (is_executing (inferior_ptid)) |
1648 | return 0; | |
1649 | ||
206415a3 | 1650 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1651 | } |
1652 | ||
1653 | /* Find a frame a certain number of levels away from FRAME. | |
1654 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1655 | Positive means go to earlier frames (up); negative, the reverse. | |
1656 | The int that contains the number of levels is counted toward | |
1657 | zero as the frames for those levels are found. | |
1658 | If the top or bottom frame is reached, that frame is returned, | |
1659 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1660 | how much farther the original request asked to go. */ | |
1661 | ||
1662 | struct frame_info * | |
033a42c2 | 1663 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1664 | { |
033a42c2 MK |
1665 | /* Going up is simple: just call get_prev_frame enough times or |
1666 | until the initial frame is reached. */ | |
c906108c SS |
1667 | while (*level_offset_ptr > 0) |
1668 | { | |
033a42c2 MK |
1669 | struct frame_info *prev = get_prev_frame (frame); |
1670 | if (!prev) | |
c906108c SS |
1671 | break; |
1672 | (*level_offset_ptr)--; | |
1673 | frame = prev; | |
1674 | } | |
033a42c2 | 1675 | |
c906108c | 1676 | /* Going down is just as simple. */ |
033a42c2 | 1677 | while (*level_offset_ptr < 0) |
c906108c | 1678 | { |
033a42c2 MK |
1679 | struct frame_info *next = get_next_frame (frame); |
1680 | if (!next) | |
1681 | break; | |
1682 | (*level_offset_ptr)++; | |
1683 | frame = next; | |
c906108c | 1684 | } |
033a42c2 | 1685 | |
c906108c SS |
1686 | return frame; |
1687 | } | |
1688 | ||
033a42c2 MK |
1689 | /* The "select_frame" command. With no argument this is a NOP. |
1690 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1691 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1692 | ||
1693 | See parse_frame_specification for more info on proper frame | |
1694 | expressions. */ | |
c906108c | 1695 | |
8b93c638 | 1696 | void |
fba45db2 | 1697 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1698 | { |
1c8831c5 | 1699 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1700 | } |
1701 | ||
033a42c2 MK |
1702 | /* The "frame" command. With no argument, print the selected frame |
1703 | briefly. With an argument, behave like select_frame and then print | |
1704 | the selected frame. */ | |
c906108c | 1705 | |
033a42c2 | 1706 | static void |
fba45db2 | 1707 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1708 | { |
1709 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1710 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1711 | } |
1712 | ||
033a42c2 | 1713 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1714 | |
7a292a7a | 1715 | static void |
fba45db2 | 1716 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1717 | { |
033a42c2 | 1718 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1719 | } |
c906108c | 1720 | |
033a42c2 MK |
1721 | /* Select the frame up one or COUNT_EXP stack levels from the |
1722 | previously selected frame, and print it briefly. */ | |
c906108c | 1723 | |
c906108c | 1724 | static void |
fba45db2 | 1725 | up_silently_base (char *count_exp) |
c906108c | 1726 | { |
033a42c2 MK |
1727 | struct frame_info *frame; |
1728 | int count = 1; | |
1729 | ||
c906108c | 1730 | if (count_exp) |
bb518678 | 1731 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1732 | |
033a42c2 MK |
1733 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1734 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1735 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1736 | select_frame (frame); |
c906108c SS |
1737 | } |
1738 | ||
1739 | static void | |
fba45db2 | 1740 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1741 | { |
c5aa993b | 1742 | up_silently_base (count_exp); |
c906108c SS |
1743 | } |
1744 | ||
1745 | static void | |
fba45db2 | 1746 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1747 | { |
1748 | up_silently_base (count_exp); | |
b04f3ab4 | 1749 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1750 | } |
1751 | ||
033a42c2 MK |
1752 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1753 | selected frame, and print it briefly. */ | |
c906108c | 1754 | |
c906108c | 1755 | static void |
fba45db2 | 1756 | down_silently_base (char *count_exp) |
c906108c | 1757 | { |
52f0bd74 | 1758 | struct frame_info *frame; |
033a42c2 | 1759 | int count = -1; |
c906108c | 1760 | if (count_exp) |
bb518678 | 1761 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1762 | |
033a42c2 MK |
1763 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1764 | if (count != 0 && count_exp == NULL) | |
c906108c | 1765 | { |
033a42c2 MK |
1766 | /* We only do this if COUNT_EXP is not specified. That way |
1767 | "down" means to really go down (and let me know if that is | |
1768 | impossible), but "down 9999" can be used to mean go all the | |
1769 | way down without getting an error. */ | |
c906108c | 1770 | |
033a42c2 | 1771 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1772 | } |
1773 | ||
0f7d239c | 1774 | select_frame (frame); |
c906108c SS |
1775 | } |
1776 | ||
c906108c | 1777 | static void |
fba45db2 | 1778 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1779 | { |
1780 | down_silently_base (count_exp); | |
c906108c SS |
1781 | } |
1782 | ||
1783 | static void | |
fba45db2 | 1784 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1785 | { |
1786 | down_silently_base (count_exp); | |
b04f3ab4 | 1787 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1788 | } |
1789 | \f | |
033a42c2 | 1790 | |
8b93c638 | 1791 | void |
fba45db2 | 1792 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1793 | { |
1794 | struct symbol *thisfun; | |
3d6d86c6 | 1795 | struct value *return_value = NULL; |
fc70c2a0 | 1796 | const char *query_prefix = ""; |
c906108c | 1797 | |
b04f3ab4 | 1798 | thisfun = get_frame_function (get_selected_frame ("No selected frame.")); |
c906108c | 1799 | |
fc70c2a0 AC |
1800 | /* Compute the return value. If the computation triggers an error, |
1801 | let it bail. If the return type can't be handled, set | |
1802 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1803 | message. */ | |
c906108c SS |
1804 | if (retval_exp) |
1805 | { | |
1806 | struct type *return_type = NULL; | |
1807 | ||
fc70c2a0 AC |
1808 | /* Compute the return value. Should the computation fail, this |
1809 | call throws an error. */ | |
c906108c SS |
1810 | return_value = parse_and_eval (retval_exp); |
1811 | ||
fc70c2a0 AC |
1812 | /* Cast return value to the return type of the function. Should |
1813 | the cast fail, this call throws an error. */ | |
c906108c SS |
1814 | if (thisfun != NULL) |
1815 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1816 | if (return_type == NULL) | |
1817 | return_type = builtin_type_int; | |
3e9a183c | 1818 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1819 | return_value = value_cast (return_type, return_value); |
1820 | ||
fc70c2a0 AC |
1821 | /* Make sure the value is fully evaluated. It may live in the |
1822 | stack frame we're about to pop. */ | |
d69fe07e | 1823 | if (value_lazy (return_value)) |
c906108c | 1824 | value_fetch_lazy (return_value); |
c906108c | 1825 | |
667e784f AC |
1826 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1827 | /* If the return-type is "void", don't try to find the | |
1828 | return-value's location. However, do still evaluate the | |
1829 | return expression so that, even when the expression result | |
1830 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1831 | occur. */ |
667e784f | 1832 | return_value = NULL; |
c055b101 | 1833 | else if (using_struct_return (SYMBOL_TYPE (thisfun), return_type)) |
fc70c2a0 | 1834 | { |
667e784f AC |
1835 | query_prefix = "\ |
1836 | The location at which to store the function's return value is unknown.\n\ | |
1837 | If you continue, the return value that you specified will be ignored.\n"; | |
1838 | return_value = NULL; | |
fc70c2a0 | 1839 | } |
c906108c SS |
1840 | } |
1841 | ||
fc70c2a0 AC |
1842 | /* Does an interactive user really want to do this? Include |
1843 | information, such as how well GDB can handle the return value, in | |
1844 | the query message. */ | |
1845 | if (from_tty) | |
1846 | { | |
1847 | int confirmed; | |
1848 | if (thisfun == NULL) | |
e2e0b3e5 | 1849 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
1850 | query_prefix); |
1851 | else | |
e2e0b3e5 | 1852 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
1853 | SYMBOL_PRINT_NAME (thisfun)); |
1854 | if (!confirmed) | |
8a3fe4f8 | 1855 | error (_("Not confirmed")); |
fc70c2a0 | 1856 | } |
c906108c | 1857 | |
fc70c2a0 AC |
1858 | /* NOTE: cagney/2003-01-18: Is this silly? Rather than pop each |
1859 | frame in turn, should this code just go straight to the relevant | |
1860 | frame and pop that? */ | |
c906108c | 1861 | |
fc70c2a0 AC |
1862 | /* First discard all frames inner-to the selected frame (making the |
1863 | selected frame current). */ | |
1864 | { | |
b04f3ab4 | 1865 | struct frame_id selected_id = get_frame_id (get_selected_frame (NULL)); |
fc70c2a0 AC |
1866 | while (!frame_id_eq (selected_id, get_frame_id (get_current_frame ()))) |
1867 | { | |
09a7aba8 UW |
1868 | struct frame_info *frame = get_current_frame (); |
1869 | if (frame_id_inner (get_frame_arch (frame), selected_id, | |
1870 | get_frame_id (frame))) | |
fc70c2a0 AC |
1871 | /* Caught in the safety net, oops! We've gone way past the |
1872 | selected frame. */ | |
8a3fe4f8 | 1873 | error (_("Problem while popping stack frames (corrupt stack?)")); |
fc70c2a0 AC |
1874 | frame_pop (get_current_frame ()); |
1875 | } | |
1876 | } | |
c906108c | 1877 | |
fc70c2a0 AC |
1878 | /* Second discard the selected frame (which is now also the current |
1879 | frame). */ | |
dbe9fe58 | 1880 | frame_pop (get_current_frame ()); |
c906108c | 1881 | |
a1f5b845 | 1882 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
1883 | if (return_value != NULL) |
1884 | { | |
df407dfe | 1885 | struct type *return_type = value_type (return_value); |
7500260a | 1886 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
c055b101 CV |
1887 | gdb_assert (gdbarch_return_value (gdbarch, SYMBOL_TYPE (thisfun), |
1888 | return_type, NULL, NULL, NULL) | |
750eb019 | 1889 | == RETURN_VALUE_REGISTER_CONVENTION); |
c055b101 | 1890 | gdbarch_return_value (gdbarch, SYMBOL_TYPE (thisfun), return_type, |
594f7785 | 1891 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 1892 | value_contents (return_value) /*write*/); |
fc70c2a0 | 1893 | } |
1a2aab69 | 1894 | |
fc70c2a0 AC |
1895 | /* If we are at the end of a call dummy now, pop the dummy frame |
1896 | too. */ | |
e8bcf01f AC |
1897 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
1898 | frame_pop (get_current_frame ()); | |
1a2aab69 | 1899 | |
c906108c | 1900 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
1901 | if (from_tty) |
1902 | frame_command ("0", 1); | |
1903 | else | |
1904 | select_frame_command ("0", 0); | |
1905 | } | |
1906 | ||
033a42c2 MK |
1907 | /* Sets the scope to input function name, provided that the function |
1908 | is within the current stack frame */ | |
c906108c SS |
1909 | |
1910 | struct function_bounds | |
1911 | { | |
1912 | CORE_ADDR low, high; | |
1913 | }; | |
1914 | ||
1915 | static void | |
fba45db2 | 1916 | func_command (char *arg, int from_tty) |
c906108c | 1917 | { |
033a42c2 | 1918 | struct frame_info *frame; |
c906108c SS |
1919 | int found = 0; |
1920 | struct symtabs_and_lines sals; | |
1921 | int i; | |
1922 | int level = 1; | |
033a42c2 | 1923 | struct function_bounds *func_bounds = NULL; |
c906108c | 1924 | |
033a42c2 | 1925 | if (arg != NULL) |
c906108c SS |
1926 | return; |
1927 | ||
033a42c2 | 1928 | frame = parse_frame_specification ("0"); |
c906108c SS |
1929 | sals = decode_line_spec (arg, 1); |
1930 | func_bounds = (struct function_bounds *) xmalloc ( | |
1931 | sizeof (struct function_bounds) * sals.nelts); | |
1932 | for (i = 0; (i < sals.nelts && !found); i++) | |
1933 | { | |
033a42c2 MK |
1934 | if (sals.sals[i].pc == 0 |
1935 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
1936 | &func_bounds[i].low, | |
1937 | &func_bounds[i].high) == 0) | |
c906108c | 1938 | { |
033a42c2 | 1939 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
1940 | } |
1941 | } | |
1942 | ||
1943 | do | |
1944 | { | |
1945 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
1946 | found = (get_frame_pc (frame) >= func_bounds[i].low |
1947 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
1948 | if (!found) |
1949 | { | |
1950 | level = 1; | |
033a42c2 | 1951 | frame = find_relative_frame (frame, &level); |
c906108c SS |
1952 | } |
1953 | } | |
1954 | while (!found && level == 0); | |
1955 | ||
1956 | if (func_bounds) | |
b8c9b27d | 1957 | xfree (func_bounds); |
c906108c SS |
1958 | |
1959 | if (!found) | |
a3f17187 | 1960 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 1961 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 1962 | select_and_print_frame (frame); |
c906108c SS |
1963 | } |
1964 | ||
1965 | /* Gets the language of the current frame. */ | |
1966 | ||
1967 | enum language | |
fba45db2 | 1968 | get_frame_language (void) |
c906108c | 1969 | { |
206415a3 | 1970 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 1971 | |
033a42c2 | 1972 | if (frame) |
c906108c | 1973 | { |
7ae4c3a5 | 1974 | /* We determine the current frame language by looking up its |
033a42c2 MK |
1975 | associated symtab. To retrieve this symtab, we use the frame |
1976 | PC. However we cannot use the frame PC as is, because it | |
1977 | usually points to the instruction following the "call", which | |
1978 | is sometimes the first instruction of another function. So | |
1979 | we rely on get_frame_address_in_block(), it provides us with | |
1980 | a PC that is guaranteed to be inside the frame's code | |
1981 | block. */ | |
1982 | CORE_ADDR pc = get_frame_address_in_block (frame); | |
1983 | struct symtab *s = find_pc_symtab (pc); | |
1984 | ||
c906108c | 1985 | if (s) |
033a42c2 | 1986 | return s->language; |
c906108c | 1987 | } |
c906108c | 1988 | |
033a42c2 | 1989 | return language_unknown; |
c906108c SS |
1990 | } |
1991 | \f | |
033a42c2 MK |
1992 | |
1993 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
1994 | void _initialize_stack (void); | |
1995 | ||
c906108c | 1996 | void |
fba45db2 | 1997 | _initialize_stack (void) |
c906108c | 1998 | { |
c5aa993b | 1999 | #if 0 |
c906108c SS |
2000 | backtrace_limit = 30; |
2001 | #endif | |
2002 | ||
1bedd215 AC |
2003 | add_com ("return", class_stack, return_command, _("\ |
2004 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2005 | Control remains in the debugger, but when you continue\n\ |
2006 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2007 | If an argument is given, it is an expression for the value to return.")); |
2008 | ||
2009 | add_com ("up", class_stack, up_command, _("\ | |
2010 | Select and print stack frame that called this one.\n\ | |
2011 | An argument says how many frames up to go.")); | |
2012 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2013 | Same as the `up' command, but does not print anything.\n\ | |
2014 | This is useful in command scripts.")); | |
2015 | ||
2016 | add_com ("down", class_stack, down_command, _("\ | |
2017 | Select and print stack frame called by this one.\n\ | |
2018 | An argument says how many frames down to go.")); | |
c906108c SS |
2019 | add_com_alias ("do", "down", class_stack, 1); |
2020 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2021 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2022 | Same as the `down' command, but does not print anything.\n\ | |
2023 | This is useful in command scripts.")); | |
c906108c | 2024 | |
1bedd215 AC |
2025 | add_com ("frame", class_stack, frame_command, _("\ |
2026 | Select and print a stack frame.\n\ | |
c906108c SS |
2027 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ |
2028 | An argument specifies the frame to select.\n\ | |
2029 | It can be a stack frame number or the address of the frame.\n\ | |
2030 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2031 | a command file or a user-defined command.")); |
c906108c SS |
2032 | |
2033 | add_com_alias ("f", "frame", class_stack, 1); | |
2034 | ||
2035 | if (xdb_commands) | |
2036 | { | |
c5aa993b | 2037 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2038 | _("Print the current stack frame.\n")); |
c906108c SS |
2039 | add_com_alias ("V", "frame", class_stack, 1); |
2040 | } | |
1bedd215 AC |
2041 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2042 | Select a stack frame without printing anything.\n\ | |
c906108c | 2043 | An argument specifies the frame to select.\n\ |
1bedd215 | 2044 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2045 | |
1bedd215 AC |
2046 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2047 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
c906108c | 2048 | With a negative argument, print outermost -COUNT frames.\n\ |
1bedd215 | 2049 | Use of the 'full' qualifier also prints the values of the local variables.\n")); |
c906108c SS |
2050 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2051 | if (xdb_commands) | |
2052 | { | |
2053 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 AC |
2054 | add_com ("T", class_stack, backtrace_full_command, _("\ |
2055 | Print backtrace of all stack frames, or innermost COUNT frames \n\ | |
c906108c SS |
2056 | and the values of the local variables.\n\ |
2057 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2058 | Usage: T <count>\n")); |
c906108c SS |
2059 | } |
2060 | ||
2061 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2062 | add_info ("stack", backtrace_command, | |
1bedd215 | 2063 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2064 | add_info_alias ("s", "stack", 1); |
2065 | add_info ("frame", frame_info, | |
1bedd215 | 2066 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2067 | add_info_alias ("f", "frame", 1); |
2068 | add_info ("locals", locals_info, | |
1bedd215 | 2069 | _("Local variables of current stack frame.")); |
c906108c | 2070 | add_info ("args", args_info, |
1bedd215 | 2071 | _("Argument variables of current stack frame.")); |
c906108c | 2072 | if (xdb_commands) |
c5aa993b | 2073 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2074 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2075 | |
2076 | if (dbx_commands) | |
1bedd215 AC |
2077 | add_com ("func", class_stack, func_command, _("\ |
2078 | Select the stack frame that contains <func>.\n\ | |
2079 | Usage: func <name>\n")); | |
c906108c SS |
2080 | |
2081 | add_info ("catch", catch_info, | |
1bedd215 | 2082 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2083 | |
88408340 JB |
2084 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2085 | print_frame_arguments_choices, &print_frame_arguments, | |
2086 | _("Set printing of non-scalar frame arguments"), | |
2087 | _("Show printing of non-scalar frame arguments"), | |
2088 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2089 | ||
c906108c | 2090 | #if 0 |
1a966eab AC |
2091 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, _(\ |
2092 | "Specify maximum number of frames for \"backtrace\" to print by default."), | |
c906108c | 2093 | &setlist); |
1bedd215 AC |
2094 | add_info ("backtrace-limit", backtrace_limit_info, _("\ |
2095 | The maximum number of frames for \"backtrace\" to print by default.")); | |
c906108c SS |
2096 | #endif |
2097 | } |