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, |
0fb0cc75 JB |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
5 | 2009 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" |
3567439c | 47 | #include "cp-support.h" |
30c33a9f | 48 | #include "disasm.h" |
edb3359d | 49 | #include "inline-frame.h" |
c906108c | 50 | |
033a42c2 MK |
51 | #include "gdb_assert.h" |
52 | #include <ctype.h> | |
53 | #include "gdb_string.h" | |
c906108c | 54 | |
9a4105ab | 55 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 56 | |
88408340 JB |
57 | /* The possible choices of "set print frame-arguments, and the value |
58 | of this setting. */ | |
59 | ||
60 | static const char *print_frame_arguments_choices[] = | |
61 | {"all", "scalars", "none", NULL}; | |
476f7b68 | 62 | static const char *print_frame_arguments = "scalars"; |
88408340 | 63 | |
a58dd373 | 64 | /* Prototypes for local functions. */ |
c906108c | 65 | |
d9fcf2fb JM |
66 | static void print_frame_local_vars (struct frame_info *, int, |
67 | struct ui_file *); | |
c906108c | 68 | |
033a42c2 MK |
69 | static void print_frame (struct frame_info *frame, int print_level, |
70 | enum print_what print_what, int print_args, | |
c5394b80 JM |
71 | struct symtab_and_line sal); |
72 | ||
c906108c SS |
73 | /* Zero means do things normally; we are interacting directly with the |
74 | user. One means print the full filename and linenumber when a | |
75 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
76 | parse. Two means print similar annotations, but in many more | |
77 | cases and in a slightly different syntax. */ | |
78 | ||
79 | int annotation_level = 0; | |
c906108c | 80 | \f |
c5aa993b JM |
81 | |
82 | struct print_stack_frame_args | |
033a42c2 MK |
83 | { |
84 | struct frame_info *frame; | |
85 | int print_level; | |
86 | enum print_what print_what; | |
87 | int print_args; | |
88 | }; | |
89 | ||
90 | /* Show or print the frame arguments; stub for catch_errors. */ | |
91 | ||
c906108c | 92 | static int |
fba45db2 | 93 | print_stack_frame_stub (void *args) |
c906108c | 94 | { |
c789492a | 95 | struct print_stack_frame_args *p = args; |
033a42c2 | 96 | int center = (p->print_what == SRC_LINE || p->print_what == SRC_AND_LOC); |
c906108c | 97 | |
033a42c2 MK |
98 | print_frame_info (p->frame, p->print_level, p->print_what, p->print_args); |
99 | set_current_sal_from_frame (p->frame, center); | |
c906108c SS |
100 | return 0; |
101 | } | |
102 | ||
edb3359d DJ |
103 | /* Return 1 if we should display the address in addition to the location, |
104 | because we are in the middle of a statement. */ | |
105 | ||
106 | static int | |
107 | frame_show_address (struct frame_info *frame, | |
108 | struct symtab_and_line sal) | |
109 | { | |
110 | /* If there is a line number, but no PC, then there is no location | |
111 | information associated with this sal. The only way that should | |
112 | happen is for the call sites of inlined functions (SAL comes from | |
113 | find_frame_sal). Otherwise, we would have some PC range if the | |
114 | SAL came from a line table. */ | |
115 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
116 | { | |
117 | if (get_next_frame (frame) == NULL) | |
118 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
119 | else | |
120 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | return get_frame_pc (frame) != sal.pc; | |
125 | } | |
126 | ||
033a42c2 | 127 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
128 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
129 | relative level, function name, argument list, and file name and | |
130 | line number. If the frame's PC is not at the beginning of the | |
131 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
132 | |
133 | void | |
033a42c2 | 134 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 135 | enum print_what print_what) |
c906108c SS |
136 | { |
137 | struct print_stack_frame_args args; | |
138 | ||
033a42c2 | 139 | args.frame = frame; |
0faf0076 AC |
140 | args.print_level = print_level; |
141 | args.print_what = print_what; | |
aaf9e9fd DP |
142 | /* For mi, alway print location and address. */ |
143 | args.print_what = ui_out_is_mi_like_p (uiout) ? LOC_AND_ADDRESS : print_what; | |
0faf0076 | 144 | args.print_args = 1; |
c906108c | 145 | |
5c3ce3f7 | 146 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ERROR); |
7789c6f5 | 147 | } |
c906108c | 148 | |
c5aa993b JM |
149 | struct print_args_args |
150 | { | |
c906108c | 151 | struct symbol *func; |
033a42c2 | 152 | struct frame_info *frame; |
d9fcf2fb | 153 | struct ui_file *stream; |
c906108c SS |
154 | }; |
155 | ||
033a42c2 | 156 | static int print_args_stub (void *args); |
c906108c | 157 | |
033a42c2 MK |
158 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
159 | the offset of the first nameless argument, and NUM is the number of | |
160 | nameless arguments to print. FIRST is nonzero if this is the first | |
161 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
162 | |
163 | static void | |
033a42c2 | 164 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
165 | int first, struct ui_file *stream) |
166 | { | |
e17a4113 UW |
167 | struct gdbarch *gdbarch = get_frame_arch (frame); |
168 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
169 | int i; |
170 | CORE_ADDR argsaddr; | |
171 | long arg_value; | |
172 | ||
173 | for (i = 0; i < num; i++) | |
174 | { | |
175 | QUIT; | |
033a42c2 | 176 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
177 | if (!argsaddr) |
178 | return; | |
e17a4113 UW |
179 | arg_value = read_memory_integer (argsaddr + start, |
180 | sizeof (int), byte_order); | |
8d3b0994 AC |
181 | if (!first) |
182 | fprintf_filtered (stream, ", "); | |
183 | fprintf_filtered (stream, "%ld", arg_value); | |
184 | first = 0; | |
185 | start += sizeof (int); | |
186 | } | |
187 | } | |
188 | ||
033a42c2 MK |
189 | /* Print the arguments of frame FRAME on STREAM, given the function |
190 | FUNC running in that frame (as a symbol), where NUM is the number | |
191 | of arguments according to the stack frame (or -1 if the number of | |
192 | arguments is unknown). */ | |
8d3b0994 | 193 | |
e3168615 | 194 | /* Note that currently the "number of arguments according to the |
033a42c2 | 195 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 196 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
197 | |
198 | static void | |
033a42c2 MK |
199 | print_frame_args (struct symbol *func, struct frame_info *frame, |
200 | int num, struct ui_file *stream) | |
8d3b0994 | 201 | { |
8d3b0994 | 202 | int first = 1; |
8d3b0994 | 203 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
204 | at the highest offset, or -1 if we haven't come to a stack |
205 | argument yet. */ | |
8d3b0994 | 206 | long highest_offset = -1; |
8d3b0994 AC |
207 | /* Number of ints of arguments that we have printed so far. */ |
208 | int args_printed = 0; | |
209 | struct cleanup *old_chain, *list_chain; | |
210 | struct ui_stream *stb; | |
a6bac58e TT |
211 | /* True if we should print arguments, false otherwise. */ |
212 | int print_args = strcmp (print_frame_arguments, "none"); | |
213 | /* True in "summary" mode, false otherwise. */ | |
214 | int summary = !strcmp (print_frame_arguments, "scalars"); | |
8d3b0994 AC |
215 | |
216 | stb = ui_out_stream_new (uiout); | |
217 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
218 | ||
219 | if (func) | |
220 | { | |
033a42c2 MK |
221 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
222 | struct dict_iterator iter; | |
223 | struct symbol *sym; | |
224 | struct value *val; | |
8d3b0994 | 225 | |
de4f826b | 226 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
227 | { |
228 | QUIT; | |
229 | ||
230 | /* Keep track of the highest stack argument offset seen, and | |
231 | skip over any kinds of symbols we don't care about. */ | |
232 | ||
2a2d4dc3 AS |
233 | if (!SYMBOL_IS_ARGUMENT (sym)) |
234 | continue; | |
235 | ||
8d3b0994 AC |
236 | switch (SYMBOL_CLASS (sym)) |
237 | { | |
238 | case LOC_ARG: | |
239 | case LOC_REF_ARG: | |
240 | { | |
241 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 242 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
243 | |
244 | /* Compute address of next argument by adding the size of | |
245 | this argument and rounding to an int boundary. */ | |
246 | current_offset = | |
247 | ((current_offset + arg_size + sizeof (int) - 1) | |
248 | & ~(sizeof (int) - 1)); | |
249 | ||
033a42c2 MK |
250 | /* If this is the highest offset seen yet, set |
251 | highest_offset. */ | |
8d3b0994 AC |
252 | if (highest_offset == -1 |
253 | || (current_offset > highest_offset)) | |
254 | highest_offset = current_offset; | |
255 | ||
033a42c2 MK |
256 | /* Add the number of ints we're about to print to |
257 | args_printed. */ | |
8d3b0994 AC |
258 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
259 | } | |
260 | ||
033a42c2 MK |
261 | /* We care about types of symbols, but don't need to |
262 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 263 | case LOC_REGISTER: |
8d3b0994 | 264 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
265 | case LOC_COMPUTED: |
266 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 267 | default: |
2a2d4dc3 | 268 | break; |
8d3b0994 AC |
269 | } |
270 | ||
271 | /* We have to look up the symbol because arguments can have | |
272 | two entries (one a parameter, one a local) and the one we | |
273 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 274 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
275 | small structure and gcc2 when the argument type is float |
276 | and it is passed as a double and converted to float by | |
277 | the prologue (in the latter case the type of the LOC_ARG | |
278 | symbol is double and the type of the LOC_LOCAL symbol is | |
279 | float). */ | |
033a42c2 MK |
280 | /* But if the parameter name is null, don't try it. Null |
281 | parameter names occur on the RS/6000, for traceback | |
282 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 283 | |
3567439c | 284 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
285 | { |
286 | struct symbol *nsym; | |
3567439c | 287 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 288 | b, VAR_DOMAIN, NULL); |
55765a25 | 289 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
290 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
291 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 292 | { |
033a42c2 MK |
293 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
294 | that it was passed on the stack and loaded into a | |
295 | register, or passed in a register and stored in a | |
296 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
297 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
298 | |
299 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
300 | |
301 | (1) Because find_saved_registers may be slow for | |
302 | remote debugging. | |
303 | ||
304 | (2) Because registers are often re-used and stack | |
305 | slots rarely (never?) are. Therefore using | |
306 | the stack slot is much less likely to print | |
307 | garbage. | |
8d3b0994 AC |
308 | |
309 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
310 | |
311 | (1) So that the backtrace prints the same value | |
312 | as "print foo". I see no compelling reason | |
313 | why this needs to be the case; having the | |
314 | backtrace print the value which was passed | |
315 | in, and "print foo" print the value as | |
316 | modified within the called function, makes | |
317 | perfect sense to me. | |
318 | ||
319 | Additional note: It might be nice if "info args" | |
320 | displayed both values. | |
321 | ||
322 | One more note: There is a case with SPARC | |
323 | structure passing where we need to use the | |
324 | LOC_REGISTER, but this is dealt with by creating | |
325 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
326 | |
327 | /* Leave sym (the LOC_ARG) alone. */ | |
328 | ; | |
329 | } | |
330 | else | |
331 | sym = nsym; | |
332 | } | |
333 | ||
334 | /* Print the current arg. */ | |
335 | if (!first) | |
336 | ui_out_text (uiout, ", "); | |
337 | ui_out_wrap_hint (uiout, " "); | |
338 | ||
339 | annotate_arg_begin (); | |
340 | ||
341 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
342 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
033a42c2 MK |
343 | SYMBOL_LANGUAGE (sym), |
344 | DMGL_PARAMS | DMGL_ANSI); | |
8d3b0994 AC |
345 | ui_out_field_stream (uiout, "name", stb); |
346 | annotate_arg_name_end (); | |
347 | ui_out_text (uiout, "="); | |
348 | ||
a6bac58e | 349 | if (print_args) |
88408340 JB |
350 | { |
351 | /* Avoid value_print because it will deref ref parameters. | |
352 | We just want to print their addresses. Print ??? for | |
353 | args whose address we do not know. We pass 2 as | |
354 | "recurse" to val_print because our standard indentation | |
355 | here is 4 spaces, and val_print indents 2 for each | |
356 | recurse. */ | |
357 | val = read_var_value (sym, frame); | |
358 | ||
359 | annotate_arg_value (val == NULL ? NULL : value_type (val)); | |
360 | ||
361 | if (val) | |
362 | { | |
d8ca156b | 363 | const struct language_defn *language; |
79a45b7d | 364 | struct value_print_options opts; |
d8ca156b JB |
365 | |
366 | /* Use the appropriate language to display our symbol, | |
367 | unless the user forced the language to a specific | |
368 | language. */ | |
369 | if (language_mode == language_mode_auto) | |
370 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
371 | else | |
372 | language = current_language; | |
373 | ||
79a45b7d TT |
374 | get_raw_print_options (&opts); |
375 | opts.deref_ref = 0; | |
a6bac58e TT |
376 | opts.summary = summary; |
377 | common_val_print (val, stb->stream, 2, &opts, language); | |
88408340 JB |
378 | ui_out_field_stream (uiout, "value", stb); |
379 | } | |
380 | else | |
381 | ui_out_text (uiout, "???"); | |
382 | } | |
383 | else | |
384 | ui_out_text (uiout, "..."); | |
8d3b0994 | 385 | |
8d3b0994 AC |
386 | |
387 | /* Invoke ui_out_tuple_end. */ | |
388 | do_cleanups (list_chain); | |
389 | ||
390 | annotate_arg_end (); | |
391 | ||
392 | first = 0; | |
393 | } | |
394 | } | |
395 | ||
396 | /* Don't print nameless args in situations where we don't know | |
397 | enough about the stack to find them. */ | |
398 | if (num != -1) | |
399 | { | |
400 | long start; | |
401 | ||
402 | if (highest_offset == -1) | |
7500260a | 403 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
404 | else |
405 | start = highest_offset; | |
406 | ||
033a42c2 | 407 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
408 | first, stream); |
409 | } | |
033a42c2 | 410 | |
8d3b0994 AC |
411 | do_cleanups (old_chain); |
412 | } | |
413 | ||
033a42c2 | 414 | /* Stub for catch_errors. */ |
c906108c SS |
415 | |
416 | static int | |
4efb68b1 | 417 | print_args_stub (void *args) |
c906108c | 418 | { |
033a42c2 | 419 | struct print_args_args *p = args; |
12368003 | 420 | struct gdbarch *gdbarch = get_frame_arch (p->frame); |
c906108c | 421 | int numargs; |
c906108c | 422 | |
12368003 | 423 | if (gdbarch_frame_num_args_p (gdbarch)) |
983a287a | 424 | { |
12368003 | 425 | numargs = gdbarch_frame_num_args (gdbarch, p->frame); |
983a287a AC |
426 | gdb_assert (numargs >= 0); |
427 | } | |
428 | else | |
429 | numargs = -1; | |
033a42c2 | 430 | print_frame_args (p->func, p->frame, numargs, p->stream); |
c906108c SS |
431 | return 0; |
432 | } | |
433 | ||
033a42c2 MK |
434 | /* Set the current source and line to the location given by frame |
435 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
436 | line is in the center of the next 'list'. */ | |
c789492a | 437 | |
7abfe014 | 438 | void |
033a42c2 | 439 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
440 | { |
441 | struct symtab_and_line sal; | |
442 | ||
033a42c2 | 443 | find_frame_sal (frame, &sal); |
c789492a FL |
444 | if (sal.symtab) |
445 | { | |
446 | if (center) | |
447 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
448 | set_current_source_symtab_and_line (&sal); | |
449 | } | |
450 | } | |
451 | ||
30c33a9f HZ |
452 | /* If ON, GDB will display disassembly of the next source line when |
453 | execution of the program being debugged stops. | |
481df73e HZ |
454 | If AUTO (which is the default), or there's no line info to determine |
455 | the source line of the next instruction, display disassembly of next | |
456 | instruction instead. */ | |
30c33a9f HZ |
457 | |
458 | static enum auto_boolean disassemble_next_line; | |
459 | ||
460 | static void | |
461 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
462 | struct cmd_list_element *c, | |
463 | const char *value) | |
464 | { | |
465 | fprintf_filtered (file, _("\ | |
466 | Debugger's willingness to use disassemble-next-line is %s.\n"), | |
467 | value); | |
468 | } | |
469 | ||
470 | /* Show assembly codes; stub for catch_errors. */ | |
471 | ||
472 | struct gdb_disassembly_stub_args | |
473 | { | |
13274fc3 | 474 | struct gdbarch *gdbarch; |
30c33a9f HZ |
475 | int how_many; |
476 | CORE_ADDR low; | |
477 | CORE_ADDR high; | |
478 | }; | |
479 | ||
480 | static void | |
481 | gdb_disassembly_stub (void *args) | |
482 | { | |
483 | struct gdb_disassembly_stub_args *p = args; | |
e6158f16 | 484 | gdb_disassembly (p->gdbarch, uiout, 0, |
858031d9 | 485 | DISASSEMBLY_RAW_INSN, p->how_many, |
e6158f16 | 486 | p->low, p->high); |
30c33a9f HZ |
487 | } |
488 | ||
489 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly | |
490 | because it will be broken by filter sometime. */ | |
491 | ||
492 | static void | |
13274fc3 UW |
493 | do_gdb_disassembly (struct gdbarch *gdbarch, |
494 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
495 | { |
496 | volatile struct gdb_exception exception; | |
497 | struct gdb_disassembly_stub_args args; | |
498 | ||
13274fc3 | 499 | args.gdbarch = gdbarch; |
30c33a9f HZ |
500 | args.how_many = how_many; |
501 | args.low = low; | |
502 | args.high = high; | |
503 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
504 | { | |
505 | gdb_disassembly_stub (&args); | |
506 | } | |
465f42bb JB |
507 | /* If an exception was thrown while doing the disassembly, print |
508 | the error message, to give the user a clue of what happened. */ | |
509 | if (exception.reason == RETURN_ERROR) | |
510 | exception_print (gdb_stderr, exception); | |
30c33a9f HZ |
511 | } |
512 | ||
033a42c2 MK |
513 | /* Print information about frame FRAME. The output is format according |
514 | to PRINT_LEVEL and PRINT_WHAT and PRINT ARGS. The meaning of | |
515 | PRINT_WHAT is: | |
516 | ||
517 | SRC_LINE: Print only source line. | |
518 | LOCATION: Print only location. | |
519 | LOC_AND_SRC: Print location and source line. | |
520 | ||
521 | Used in "where" output, and to emit breakpoint or step | |
522 | messages. */ | |
c906108c | 523 | |
7789c6f5 | 524 | void |
033a42c2 | 525 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 526 | enum print_what print_what, int print_args) |
c906108c | 527 | { |
5af949e3 | 528 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 529 | struct symtab_and_line sal; |
c5394b80 JM |
530 | int source_print; |
531 | int location_print; | |
c906108c | 532 | |
033a42c2 | 533 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
534 | || get_frame_type (frame) == SIGTRAMP_FRAME |
535 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 536 | { |
075559bc AC |
537 | struct cleanup *uiout_cleanup |
538 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 539 | |
033a42c2 | 540 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 541 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 542 | |
c906108c | 543 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 544 | to list for this frame. */ |
0faf0076 | 545 | if (print_level) |
52c6a6ac JJ |
546 | { |
547 | ui_out_text (uiout, "#"); | |
0faf0076 | 548 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 549 | frame_relative_level (frame)); |
52c6a6ac | 550 | } |
075559bc | 551 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 552 | { |
075559bc | 553 | annotate_frame_address (); |
5af949e3 UW |
554 | ui_out_field_core_addr (uiout, "addr", |
555 | gdbarch, get_frame_pc (frame)); | |
075559bc | 556 | annotate_frame_address_end (); |
52c6a6ac | 557 | } |
6a3fe0a4 | 558 | |
033a42c2 | 559 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
560 | { |
561 | annotate_function_call (); | |
562 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
563 | } | |
033a42c2 | 564 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
565 | { |
566 | annotate_signal_handler_caller (); | |
567 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
568 | } | |
36f15f55 UW |
569 | else if (get_frame_type (frame) == ARCH_FRAME) |
570 | { | |
571 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
572 | } | |
075559bc | 573 | ui_out_text (uiout, "\n"); |
c906108c | 574 | annotate_frame_end (); |
075559bc AC |
575 | |
576 | do_cleanups (uiout_cleanup); | |
c906108c SS |
577 | return; |
578 | } | |
579 | ||
033a42c2 MK |
580 | /* If FRAME is not the innermost frame, that normally means that |
581 | FRAME->pc points to *after* the call instruction, and we want to | |
582 | get the line containing the call, never the next line. But if | |
583 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
584 | next frame was not entered as the result of a call, and we want | |
585 | to get the line containing FRAME->pc. */ | |
586 | find_frame_sal (frame, &sal); | |
c906108c | 587 | |
0faf0076 AC |
588 | location_print = (print_what == LOCATION |
589 | || print_what == LOC_AND_ADDRESS | |
590 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
591 | |
592 | if (location_print || !sal.symtab) | |
033a42c2 | 593 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 594 | |
0faf0076 | 595 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 596 | |
30c33a9f HZ |
597 | /* If disassemble-next-line is set to auto or on and doesn't have |
598 | the line debug messages for $pc, output the next instruction. */ | |
599 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
600 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
601 | && source_print && !sal.symtab) | |
13274fc3 UW |
602 | do_gdb_disassembly (get_frame_arch (frame), 1, |
603 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 604 | |
c5394b80 JM |
605 | if (source_print && sal.symtab) |
606 | { | |
607 | int done = 0; | |
0faf0076 | 608 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 609 | && frame_show_address (frame, sal)); |
c5394b80 JM |
610 | |
611 | if (annotation_level) | |
612 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 613 | get_frame_pc (frame)); |
c5394b80 JM |
614 | if (!done) |
615 | { | |
9a4105ab | 616 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
617 | deprecated_print_frame_info_listing_hook (sal.symtab, |
618 | sal.line, | |
619 | sal.line + 1, 0); | |
ba4bbdcb | 620 | else |
c5394b80 | 621 | { |
79a45b7d TT |
622 | struct value_print_options opts; |
623 | get_user_print_options (&opts); | |
ba4bbdcb KS |
624 | /* We used to do this earlier, but that is clearly |
625 | wrong. This function is used by many different | |
626 | parts of gdb, including normal_stop in infrun.c, | |
627 | which uses this to print out the current PC | |
628 | when we stepi/nexti into the middle of a source | |
629 | line. Only the command line really wants this | |
630 | behavior. Other UIs probably would like the | |
cbd3c883 | 631 | ability to decide for themselves if it is desired. */ |
79a45b7d | 632 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 633 | { |
5af949e3 UW |
634 | ui_out_field_core_addr (uiout, "addr", |
635 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 636 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
637 | } |
638 | ||
639 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 640 | } |
c5394b80 | 641 | } |
30c33a9f HZ |
642 | |
643 | /* If disassemble-next-line is set to on and there is line debug | |
644 | messages, output assembly codes for next line. */ | |
645 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
13274fc3 UW |
646 | do_gdb_disassembly (get_frame_arch (frame), -1, |
647 | get_frame_pc (frame), sal.end); | |
c5394b80 JM |
648 | } |
649 | ||
0faf0076 | 650 | if (print_what != LOCATION) |
033a42c2 | 651 | set_default_breakpoint (1, get_frame_pc (frame), sal.symtab, sal.line); |
c5394b80 JM |
652 | |
653 | annotate_frame_end (); | |
654 | ||
655 | gdb_flush (gdb_stdout); | |
656 | } | |
657 | ||
f8f6f20b TJB |
658 | /* Attempt to obtain the FUNNAME and FUNLANG of the function corresponding |
659 | to FRAME. */ | |
660 | void | |
661 | find_frame_funname (struct frame_info *frame, char **funname, | |
662 | enum language *funlang) | |
c5394b80 JM |
663 | { |
664 | struct symbol *func; | |
8b93c638 | 665 | |
f8f6f20b TJB |
666 | *funname = NULL; |
667 | *funlang = language_unknown; | |
c5394b80 | 668 | |
edb3359d | 669 | func = get_frame_function (frame); |
c906108c SS |
670 | if (func) |
671 | { | |
672 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
673 | function (when we are in the first function in a file which |
674 | is compiled without debugging symbols, the previous function | |
675 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
676 | that is supposed to tell us where the file with debugging |
677 | symbols ends has been truncated by ar because it is longer | |
678 | than 15 characters). This also occurs if the user uses asm() | |
679 | to create a function but not stabs for it (in a file compiled | |
680 | with -g). | |
c5aa993b JM |
681 | |
682 | So look in the minimal symbol tables as well, and if it comes | |
683 | up with a larger address for the function use that instead. | |
033a42c2 MK |
684 | I don't think this can ever cause any problems; there |
685 | shouldn't be any minimal symbols in the middle of a function; | |
686 | if this is ever changed many parts of GDB will need to be | |
687 | changed (and we'll create a find_pc_minimal_function or some | |
688 | such). */ | |
689 | ||
edb3359d DJ |
690 | struct minimal_symbol *msymbol = NULL; |
691 | ||
692 | /* Don't attempt to do this for inlined functions, which do not | |
693 | have a corresponding minimal symbol. */ | |
694 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
695 | msymbol | |
696 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 697 | |
c906108c | 698 | if (msymbol != NULL |
c5aa993b | 699 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
700 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
701 | { | |
c906108c SS |
702 | /* We also don't know anything about the function besides |
703 | its address and name. */ | |
704 | func = 0; | |
f8f6f20b TJB |
705 | *funname = SYMBOL_PRINT_NAME (msymbol); |
706 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
707 | } |
708 | else | |
709 | { | |
f8f6f20b TJB |
710 | *funname = SYMBOL_PRINT_NAME (func); |
711 | *funlang = SYMBOL_LANGUAGE (func); | |
712 | if (*funlang == language_cplus) | |
c5aa993b | 713 | { |
033a42c2 MK |
714 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
715 | to display the demangled name that we already have | |
716 | stored in the symbol table, but we stored a version | |
717 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 718 | display parameters. So remove the parameters. */ |
f8f6f20b | 719 | char *func_only = cp_remove_params (*funname); |
3567439c DJ |
720 | if (func_only) |
721 | { | |
f8f6f20b | 722 | *funname = func_only; |
3567439c DJ |
723 | make_cleanup (xfree, func_only); |
724 | } | |
c5aa993b | 725 | } |
c906108c SS |
726 | } |
727 | } | |
728 | else | |
729 | { | |
033a42c2 MK |
730 | struct minimal_symbol *msymbol = |
731 | lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
732 | ||
c906108c SS |
733 | if (msymbol != NULL) |
734 | { | |
f8f6f20b TJB |
735 | *funname = SYMBOL_PRINT_NAME (msymbol); |
736 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
737 | } |
738 | } | |
f8f6f20b TJB |
739 | } |
740 | ||
741 | static void | |
742 | print_frame (struct frame_info *frame, int print_level, | |
743 | enum print_what print_what, int print_args, | |
744 | struct symtab_and_line sal) | |
745 | { | |
5af949e3 | 746 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f8f6f20b TJB |
747 | char *funname = NULL; |
748 | enum language funlang = language_unknown; | |
749 | struct ui_stream *stb; | |
750 | struct cleanup *old_chain, *list_chain; | |
751 | struct value_print_options opts; | |
752 | ||
753 | stb = ui_out_stream_new (uiout); | |
754 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
755 | ||
756 | find_frame_funname (frame, &funname, &funlang); | |
c906108c | 757 | |
033a42c2 | 758 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 759 | gdbarch, get_frame_pc (frame)); |
c5394b80 | 760 | |
666547aa | 761 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 762 | |
0faf0076 | 763 | if (print_level) |
8b93c638 | 764 | { |
8b93c638 | 765 | ui_out_text (uiout, "#"); |
0faf0076 | 766 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 767 | frame_relative_level (frame)); |
8b93c638 | 768 | } |
79a45b7d TT |
769 | get_user_print_options (&opts); |
770 | if (opts.addressprint) | |
edb3359d | 771 | if (frame_show_address (frame, sal) || !sal.symtab |
0faf0076 | 772 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
773 | { |
774 | annotate_frame_address (); | |
5af949e3 | 775 | ui_out_field_core_addr (uiout, "addr", gdbarch, get_frame_pc (frame)); |
8b93c638 JM |
776 | annotate_frame_address_end (); |
777 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
778 | } |
779 | annotate_frame_function_name (); | |
033a42c2 MK |
780 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
781 | funlang, DMGL_ANSI); | |
8b93c638 JM |
782 | ui_out_field_stream (uiout, "func", stb); |
783 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
784 | annotate_frame_args (); |
785 | ||
8b93c638 | 786 | ui_out_text (uiout, " ("); |
0faf0076 | 787 | if (print_args) |
c906108c | 788 | { |
c5394b80 | 789 | struct print_args_args args; |
d493eb33 | 790 | struct cleanup *args_list_chain; |
033a42c2 | 791 | args.frame = frame; |
f8f6f20b | 792 | args.func = find_pc_function (get_frame_address_in_block (frame)); |
c5394b80 | 793 | args.stream = gdb_stdout; |
68c81b54 | 794 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
5c3ce3f7 | 795 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ERROR); |
033a42c2 MK |
796 | /* FIXME: ARGS must be a list. If one argument is a string it |
797 | will have " that will not be properly escaped. */ | |
666547aa | 798 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 799 | do_cleanups (args_list_chain); |
c5394b80 JM |
800 | QUIT; |
801 | } | |
8b93c638 | 802 | ui_out_text (uiout, ")"); |
c5394b80 JM |
803 | if (sal.symtab && sal.symtab->filename) |
804 | { | |
805 | annotate_frame_source_begin (); | |
8b93c638 JM |
806 | ui_out_wrap_hint (uiout, " "); |
807 | ui_out_text (uiout, " at "); | |
808 | annotate_frame_source_file (); | |
809 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
810 | if (ui_out_is_mi_like_p (uiout)) |
811 | { | |
812 | const char *fullname = symtab_to_fullname (sal.symtab); | |
813 | if (fullname != NULL) | |
814 | ui_out_field_string (uiout, "fullname", fullname); | |
815 | } | |
8b93c638 JM |
816 | annotate_frame_source_file_end (); |
817 | ui_out_text (uiout, ":"); | |
818 | annotate_frame_source_line (); | |
819 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
820 | annotate_frame_source_end (); |
821 | } | |
c906108c | 822 | |
c5394b80 | 823 | if (!funname || (!sal.symtab || !sal.symtab->filename)) |
c906108c | 824 | { |
a77053c2 | 825 | #ifdef PC_SOLIB |
033a42c2 | 826 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 827 | #else |
f5c9a895 | 828 | char *lib = solib_name_from_address (get_frame_pc (frame)); |
a77053c2 | 829 | #endif |
c5394b80 | 830 | if (lib) |
c906108c | 831 | { |
c5394b80 | 832 | annotate_frame_where (); |
8b93c638 JM |
833 | ui_out_wrap_hint (uiout, " "); |
834 | ui_out_text (uiout, " from "); | |
835 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 836 | } |
c906108c | 837 | } |
e514a9d6 | 838 | |
666547aa | 839 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 840 | do_cleanups (list_chain); |
8b93c638 JM |
841 | ui_out_text (uiout, "\n"); |
842 | do_cleanups (old_chain); | |
c906108c SS |
843 | } |
844 | \f | |
c5aa993b | 845 | |
033a42c2 MK |
846 | /* Read a frame specification in whatever the appropriate format is |
847 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
848 | specification is in any way invalid (so this function never returns | |
849 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
850 | the default selected frame was used. */ | |
c906108c | 851 | |
1c8831c5 AC |
852 | static struct frame_info * |
853 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
854 | int *selected_frame_p) | |
c906108c | 855 | { |
1c8831c5 AC |
856 | int numargs; |
857 | struct value *args[4]; | |
858 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 859 | |
1c8831c5 AC |
860 | if (frame_exp == NULL) |
861 | numargs = 0; | |
862 | else | |
c906108c | 863 | { |
1c8831c5 | 864 | char *addr_string; |
c906108c SS |
865 | struct cleanup *tmp_cleanup; |
866 | ||
1c8831c5 AC |
867 | numargs = 0; |
868 | while (1) | |
c906108c | 869 | { |
1c8831c5 AC |
870 | char *addr_string; |
871 | struct cleanup *cleanup; | |
872 | const char *p; | |
873 | ||
874 | /* Skip leading white space, bail of EOL. */ | |
875 | while (isspace (*frame_exp)) | |
876 | frame_exp++; | |
877 | if (!*frame_exp) | |
878 | break; | |
c906108c | 879 | |
1c8831c5 AC |
880 | /* Parse the argument, extract it, save it. */ |
881 | for (p = frame_exp; | |
882 | *p && !isspace (*p); | |
883 | p++); | |
884 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 885 | frame_exp = p; |
1c8831c5 AC |
886 | cleanup = make_cleanup (xfree, addr_string); |
887 | ||
888 | /* NOTE: Parse and evaluate expression, but do not use | |
889 | functions such as parse_and_eval_long or | |
890 | parse_and_eval_address to also extract the value. | |
891 | Instead value_as_long and value_as_address are used. | |
892 | This avoids problems with expressions that contain | |
893 | side-effects. */ | |
894 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 895 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
896 | args[numargs++] = parse_and_eval (addr_string); |
897 | ||
898 | do_cleanups (cleanup); | |
c906108c SS |
899 | } |
900 | } | |
901 | ||
1c8831c5 AC |
902 | /* If no args, default to the selected frame. */ |
903 | if (numargs == 0) | |
c906108c | 904 | { |
1c8831c5 AC |
905 | if (selected_frame_p != NULL) |
906 | (*selected_frame_p) = 1; | |
907 | return get_selected_frame (message); | |
908 | } | |
c906108c | 909 | |
1c8831c5 AC |
910 | /* None of the remaining use the selected frame. */ |
911 | if (selected_frame_p != NULL) | |
98f276a0 | 912 | (*selected_frame_p) = 0; |
c906108c | 913 | |
1c8831c5 AC |
914 | /* Assume the single arg[0] is an integer, and try using that to |
915 | select a frame relative to current. */ | |
916 | if (numargs == 1) | |
917 | { | |
918 | struct frame_info *fid; | |
919 | int level = value_as_long (args[0]); | |
920 | fid = find_relative_frame (get_current_frame (), &level); | |
921 | if (level == 0) | |
922 | /* find_relative_frame was successful */ | |
923 | return fid; | |
924 | } | |
c906108c | 925 | |
1c8831c5 AC |
926 | /* Convert each value into a corresponding address. */ |
927 | { | |
928 | int i; | |
929 | for (i = 0; i < numargs; i++) | |
1e275f79 | 930 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 931 | } |
c5aa993b | 932 | |
1c8831c5 AC |
933 | /* Assume that the single arg[0] is an address, use that to identify |
934 | a frame with a matching ID. Should this also accept stack/pc or | |
935 | stack/pc/special. */ | |
936 | if (numargs == 1) | |
937 | { | |
938 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
939 | struct frame_info *fid; | |
940 | ||
1c8831c5 AC |
941 | /* If (s)he specifies the frame with an address, he deserves |
942 | what (s)he gets. Still, give the highest one that matches. | |
943 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
944 | know). */ | |
945 | for (fid = get_current_frame (); | |
946 | fid != NULL; | |
947 | fid = get_prev_frame (fid)) | |
948 | { | |
949 | if (frame_id_eq (id, get_frame_id (fid))) | |
950 | { | |
c7ce8faa DJ |
951 | struct frame_info *prev_frame; |
952 | ||
953 | while (1) | |
954 | { | |
955 | prev_frame = get_prev_frame (fid); | |
956 | if (!prev_frame | |
957 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
958 | break; | |
959 | fid = prev_frame; | |
960 | } | |
1c8831c5 AC |
961 | return fid; |
962 | } | |
963 | } | |
c906108c SS |
964 | } |
965 | ||
1c8831c5 AC |
966 | /* We couldn't identify the frame as an existing frame, but |
967 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
968 | if (numargs == 1) |
969 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
970 | else if (numargs == 2) |
971 | return create_new_frame (addrs[0], addrs[1]); | |
972 | else | |
8a3fe4f8 | 973 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
974 | } |
975 | ||
9c833c82 | 976 | static struct frame_info * |
1c8831c5 AC |
977 | parse_frame_specification (char *frame_exp) |
978 | { | |
979 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
980 | } |
981 | ||
033a42c2 MK |
982 | /* Print verbosely the selected frame or the frame at address |
983 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
984 | |
985 | static void | |
fba45db2 | 986 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
987 | { |
988 | struct frame_info *fi; | |
989 | struct symtab_and_line sal; | |
990 | struct symbol *func; | |
991 | struct symtab *s; | |
992 | struct frame_info *calling_frame_info; | |
993 | int i, count, numregs; | |
994 | char *funname = 0; | |
995 | enum language funlang = language_unknown; | |
82de1e5b | 996 | const char *pc_regname; |
1c8831c5 | 997 | int selected_frame_p; |
7500260a | 998 | struct gdbarch *gdbarch; |
3567439c | 999 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
c906108c | 1000 | |
1c8831c5 | 1001 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1002 | gdbarch = get_frame_arch (fi); |
c906108c | 1003 | |
82de1e5b AC |
1004 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1005 | is not a good name. */ | |
12368003 | 1006 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1007 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1008 | easily not match that of the internal value returned by |
1009 | get_frame_pc(). */ | |
12368003 | 1010 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1011 | else |
3e8c568d | 1012 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1013 | architectures will often have a hardware register called "pc", |
1014 | and that register's value, again, can easily not match | |
1015 | get_frame_pc(). */ | |
1016 | pc_regname = "pc"; | |
1017 | ||
1058bca7 | 1018 | find_frame_sal (fi, &sal); |
c906108c | 1019 | func = get_frame_function (fi); |
1058bca7 | 1020 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
033a42c2 | 1021 | the same value? */ |
bdd78e62 | 1022 | s = find_pc_symtab (get_frame_pc (fi)); |
c906108c SS |
1023 | if (func) |
1024 | { | |
3567439c | 1025 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1026 | funlang = SYMBOL_LANGUAGE (func); |
1027 | if (funlang == language_cplus) | |
1028 | { | |
3567439c DJ |
1029 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1030 | to display the demangled name that we already have | |
1031 | stored in the symbol table, but we stored a version | |
1032 | with DMGL_PARAMS turned on, and here we don't want to | |
1033 | display parameters. So remove the parameters. */ | |
1034 | char *func_only = cp_remove_params (funname); | |
1035 | if (func_only) | |
1036 | { | |
1037 | funname = func_only; | |
1038 | make_cleanup (xfree, func_only); | |
1039 | } | |
c5aa993b | 1040 | } |
c906108c SS |
1041 | } |
1042 | else | |
1043 | { | |
033a42c2 MK |
1044 | struct minimal_symbol *msymbol; |
1045 | ||
1046 | msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi)); | |
c906108c SS |
1047 | if (msymbol != NULL) |
1048 | { | |
3567439c | 1049 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1050 | funlang = SYMBOL_LANGUAGE (msymbol); |
1051 | } | |
1052 | } | |
1053 | calling_frame_info = get_prev_frame (fi); | |
1054 | ||
1c8831c5 | 1055 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1056 | { |
a3f17187 | 1057 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1058 | frame_relative_level (fi)); |
c906108c SS |
1059 | } |
1060 | else | |
1061 | { | |
a3f17187 | 1062 | printf_filtered (_("Stack frame at ")); |
c906108c | 1063 | } |
5af949e3 | 1064 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1065 | printf_filtered (":\n"); |
82de1e5b | 1066 | printf_filtered (" %s = ", pc_regname); |
5af949e3 | 1067 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); |
c906108c SS |
1068 | |
1069 | wrap_here (" "); | |
1070 | if (funname) | |
1071 | { | |
1072 | printf_filtered (" in "); | |
1073 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1074 | DMGL_ANSI | DMGL_PARAMS); | |
1075 | } | |
1076 | wrap_here (" "); | |
1077 | if (sal.symtab) | |
1078 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1079 | puts_filtered ("; "); | |
1080 | wrap_here (" "); | |
82de1e5b | 1081 | printf_filtered ("saved %s ", pc_regname); |
5af949e3 | 1082 | fputs_filtered (paddress (gdbarch, frame_unwind_caller_pc (fi)), gdb_stdout); |
c906108c SS |
1083 | printf_filtered ("\n"); |
1084 | ||
55feb689 DJ |
1085 | if (calling_frame_info == NULL) |
1086 | { | |
1087 | enum unwind_stop_reason reason; | |
1088 | ||
1089 | reason = get_frame_unwind_stop_reason (fi); | |
1090 | if (reason != UNWIND_NO_REASON) | |
1091 | printf_filtered (_(" Outermost frame: %s\n"), | |
1092 | frame_stop_reason_string (reason)); | |
1093 | } | |
edb3359d DJ |
1094 | else if (get_frame_type (fi) == INLINE_FRAME) |
1095 | printf_filtered (" inlined into frame %d", | |
1096 | frame_relative_level (get_prev_frame (fi))); | |
1097 | else | |
c906108c SS |
1098 | { |
1099 | printf_filtered (" called by frame at "); | |
5af949e3 | 1100 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1101 | gdb_stdout); |
c906108c | 1102 | } |
75e3c1f9 | 1103 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1104 | puts_filtered (","); |
1105 | wrap_here (" "); | |
75e3c1f9 | 1106 | if (get_next_frame (fi)) |
c906108c SS |
1107 | { |
1108 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1109 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1110 | gdb_stdout); |
c906108c | 1111 | } |
75e3c1f9 | 1112 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1113 | puts_filtered ("\n"); |
55feb689 | 1114 | |
c906108c | 1115 | if (s) |
1058bca7 AC |
1116 | printf_filtered (" source language %s.\n", |
1117 | language_str (s->language)); | |
c906108c | 1118 | |
c906108c SS |
1119 | { |
1120 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1121 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1122 | /* Number of args for this frame, or -1 if unknown. */ |
1123 | int numargs; | |
1124 | ||
1125 | if (arg_list == 0) | |
1126 | printf_filtered (" Arglist at unknown address.\n"); | |
1127 | else | |
1128 | { | |
1129 | printf_filtered (" Arglist at "); | |
5af949e3 | 1130 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1131 | printf_filtered (","); |
1132 | ||
7500260a | 1133 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1134 | { |
1135 | numargs = -1; | |
1136 | puts_filtered (" args: "); | |
1137 | } | |
c906108c | 1138 | else |
983a287a | 1139 | { |
7500260a | 1140 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1141 | gdb_assert (numargs >= 0); |
1142 | if (numargs == 0) | |
1143 | puts_filtered (" no args."); | |
1144 | else if (numargs == 1) | |
1145 | puts_filtered (" 1 arg: "); | |
1146 | else | |
1147 | printf_filtered (" %d args: ", numargs); | |
1148 | } | |
c906108c SS |
1149 | print_frame_args (func, fi, numargs, gdb_stdout); |
1150 | puts_filtered ("\n"); | |
1151 | } | |
1152 | } | |
1153 | { | |
1154 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1155 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1156 | |
1157 | if (arg_list == 0) | |
1158 | printf_filtered (" Locals at unknown address,"); | |
1159 | else | |
1160 | { | |
1161 | printf_filtered (" Locals at "); | |
5af949e3 | 1162 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1163 | printf_filtered (","); |
1164 | } | |
1165 | } | |
1166 | ||
4f460812 AC |
1167 | /* Print as much information as possible on the location of all the |
1168 | registers. */ | |
1169 | { | |
1170 | enum lval_type lval; | |
1171 | int optimized; | |
1172 | CORE_ADDR addr; | |
1173 | int realnum; | |
1174 | int count; | |
1175 | int i; | |
1176 | int need_nl = 1; | |
1177 | ||
1178 | /* The sp is special; what's displayed isn't the save address, but | |
1179 | the value of the previous frame's sp. This is a legacy thing, | |
1180 | at one stage the frame cached the previous frame's SP instead | |
1181 | of its address, hence it was easiest to just display the cached | |
1182 | value. */ | |
7500260a | 1183 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1184 | { |
1185 | /* Find out the location of the saved stack pointer with out | |
1186 | actually evaluating it. */ | |
7500260a | 1187 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1188 | &optimized, &lval, &addr, |
4f460812 AC |
1189 | &realnum, NULL); |
1190 | if (!optimized && lval == not_lval) | |
c906108c | 1191 | { |
e17a4113 UW |
1192 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1193 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1194 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1195 | CORE_ADDR sp; |
7500260a | 1196 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1197 | &optimized, &lval, &addr, |
4f460812 | 1198 | &realnum, value); |
af1342ab AC |
1199 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1200 | stack pointer was packed as an unsigned integer. That | |
1201 | may or may not be valid. */ | |
e17a4113 | 1202 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1203 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1204 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1205 | printf_filtered ("\n"); |
1206 | need_nl = 0; | |
c906108c | 1207 | } |
4f460812 AC |
1208 | else if (!optimized && lval == lval_memory) |
1209 | { | |
1210 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1211 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1212 | printf_filtered ("\n"); |
1213 | need_nl = 0; | |
1214 | } | |
1215 | else if (!optimized && lval == lval_register) | |
1216 | { | |
1217 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1218 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1219 | need_nl = 0; |
1220 | } | |
1221 | /* else keep quiet. */ | |
1222 | } | |
1223 | ||
1224 | count = 0; | |
7500260a UW |
1225 | numregs = gdbarch_num_regs (gdbarch) |
1226 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1227 | for (i = 0; i < numregs; i++) |
7500260a UW |
1228 | if (i != gdbarch_sp_regnum (gdbarch) |
1229 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1230 | { |
1231 | /* Find out the location of the saved register without | |
1232 | fetching the corresponding value. */ | |
1233 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
1234 | NULL); | |
1235 | /* For moment, only display registers that were saved on the | |
1236 | stack. */ | |
1237 | if (!optimized && lval == lval_memory) | |
1238 | { | |
1239 | if (count == 0) | |
1240 | puts_filtered (" Saved registers:\n "); | |
1241 | else | |
1242 | puts_filtered (","); | |
1243 | wrap_here (" "); | |
c9f4d572 | 1244 | printf_filtered (" %s at ", |
7500260a | 1245 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1246 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1247 | count++; |
1248 | } | |
1249 | } | |
1250 | if (count || need_nl) | |
c906108c | 1251 | puts_filtered ("\n"); |
4f460812 | 1252 | } |
3567439c DJ |
1253 | |
1254 | do_cleanups (back_to); | |
c906108c SS |
1255 | } |
1256 | ||
033a42c2 MK |
1257 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1258 | frames. */ | |
c906108c SS |
1259 | |
1260 | static void | |
fba45db2 | 1261 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1262 | { |
1263 | struct frame_info *fi; | |
52f0bd74 AC |
1264 | int count; |
1265 | int i; | |
1266 | struct frame_info *trailing; | |
1267 | int trailing_level; | |
c906108c SS |
1268 | |
1269 | if (!target_has_stack) | |
8a3fe4f8 | 1270 | error (_("No stack.")); |
c906108c | 1271 | |
033a42c2 MK |
1272 | /* The following code must do two things. First, it must set the |
1273 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1274 | printing. Second, it must set the variable count to the number |
1275 | of frames which we should print, or -1 if all of them. */ | |
1276 | trailing = get_current_frame (); | |
d082b2bb | 1277 | |
c906108c SS |
1278 | trailing_level = 0; |
1279 | if (count_exp) | |
1280 | { | |
bb518678 | 1281 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1282 | if (count < 0) |
1283 | { | |
1284 | struct frame_info *current; | |
1285 | ||
1286 | count = -count; | |
1287 | ||
1288 | current = trailing; | |
1289 | while (current && count--) | |
1290 | { | |
1291 | QUIT; | |
1292 | current = get_prev_frame (current); | |
1293 | } | |
c5aa993b | 1294 | |
033a42c2 MK |
1295 | /* Will stop when CURRENT reaches the top of the stack. |
1296 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1297 | while (current) |
1298 | { | |
1299 | QUIT; | |
1300 | trailing = get_prev_frame (trailing); | |
1301 | current = get_prev_frame (current); | |
1302 | trailing_level++; | |
1303 | } | |
c5aa993b | 1304 | |
c906108c SS |
1305 | count = -1; |
1306 | } | |
1307 | } | |
1308 | else | |
1309 | count = -1; | |
1310 | ||
1311 | if (info_verbose) | |
1312 | { | |
1313 | struct partial_symtab *ps; | |
c5aa993b | 1314 | |
033a42c2 MK |
1315 | /* Read in symbols for all of the frames. Need to do this in a |
1316 | separate pass so that "Reading in symbols for xxx" messages | |
1317 | don't screw up the appearance of the backtrace. Also if | |
1318 | people have strong opinions against reading symbols for | |
c5aa993b | 1319 | backtrace this may have to be an option. */ |
c906108c | 1320 | i = count; |
033a42c2 | 1321 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c SS |
1322 | { |
1323 | QUIT; | |
c4a09524 | 1324 | ps = find_pc_psymtab (get_frame_address_in_block (fi)); |
c906108c | 1325 | if (ps) |
033a42c2 | 1326 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in. */ |
c906108c SS |
1327 | } |
1328 | } | |
1329 | ||
033a42c2 | 1330 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1331 | { |
1332 | QUIT; | |
1333 | ||
1334 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1335 | means further attempts to backtrace would fail (on the other |
1336 | hand, perhaps the code does or could be fixed to make sure | |
1337 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1338 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1339 | if (show_locals) |
c5aa993b | 1340 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1341 | |
1342 | /* Save the last frame to check for error conditions. */ | |
1343 | trailing = fi; | |
c906108c SS |
1344 | } |
1345 | ||
1346 | /* If we've stopped before the end, mention that. */ | |
1347 | if (fi && from_tty) | |
a3f17187 | 1348 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1349 | |
1350 | /* If we've run out of frames, and the reason appears to be an error | |
1351 | condition, print it. */ | |
1352 | if (fi == NULL && trailing != NULL) | |
1353 | { | |
1354 | enum unwind_stop_reason reason; | |
1355 | ||
1356 | reason = get_frame_unwind_stop_reason (trailing); | |
1357 | if (reason > UNWIND_FIRST_ERROR) | |
1358 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1359 | frame_stop_reason_string (reason)); | |
1360 | } | |
c906108c SS |
1361 | } |
1362 | ||
d75e3c94 | 1363 | struct backtrace_command_args |
033a42c2 MK |
1364 | { |
1365 | char *count_exp; | |
1366 | int show_locals; | |
1367 | int from_tty; | |
1368 | }; | |
1369 | ||
1370 | /* Stub for catch_errors. */ | |
d75e3c94 | 1371 | |
d75e3c94 JJ |
1372 | static int |
1373 | backtrace_command_stub (void *data) | |
1374 | { | |
033a42c2 | 1375 | struct backtrace_command_args *args = data; |
d75e3c94 JJ |
1376 | backtrace_command_1 (args->count_exp, args->show_locals, args->from_tty); |
1377 | return 0; | |
1378 | } | |
1379 | ||
c906108c | 1380 | static void |
fba45db2 | 1381 | backtrace_command (char *arg, int from_tty) |
c906108c | 1382 | { |
033a42c2 MK |
1383 | struct cleanup *old_chain = NULL; |
1384 | int fulltrace_arg = -1, arglen = 0, argc = 0; | |
d75e3c94 | 1385 | struct backtrace_command_args btargs; |
c906108c | 1386 | |
033a42c2 | 1387 | if (arg) |
c906108c | 1388 | { |
033a42c2 | 1389 | char **argv; |
c906108c SS |
1390 | int i; |
1391 | ||
d1a41061 | 1392 | argv = gdb_buildargv (arg); |
7a292a7a | 1393 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1394 | argc = 0; |
033a42c2 | 1395 | for (i = 0; argv[i]; i++) |
c5aa993b | 1396 | { |
745b8ca0 | 1397 | unsigned int j; |
c5aa993b | 1398 | |
033a42c2 | 1399 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1400 | argv[i][j] = tolower (argv[i][j]); |
1401 | ||
033a42c2 MK |
1402 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1403 | fulltrace_arg = argc; | |
c5aa993b JM |
1404 | else |
1405 | { | |
033a42c2 | 1406 | arglen += strlen (argv[i]); |
c5aa993b | 1407 | argc++; |
c5aa993b JM |
1408 | } |
1409 | } | |
033a42c2 MK |
1410 | arglen += argc; |
1411 | if (fulltrace_arg >= 0) | |
c5aa993b | 1412 | { |
033a42c2 | 1413 | if (arglen > 0) |
c5aa993b | 1414 | { |
033a42c2 MK |
1415 | arg = xmalloc (arglen + 1); |
1416 | memset (arg, 0, arglen + 1); | |
1417 | for (i = 0; i < (argc + 1); i++) | |
c5aa993b | 1418 | { |
033a42c2 | 1419 | if (i != fulltrace_arg) |
c5aa993b | 1420 | { |
033a42c2 MK |
1421 | strcat (arg, argv[i]); |
1422 | strcat (arg, " "); | |
c5aa993b JM |
1423 | } |
1424 | } | |
1425 | } | |
1426 | else | |
033a42c2 | 1427 | arg = NULL; |
c5aa993b | 1428 | } |
c906108c SS |
1429 | } |
1430 | ||
033a42c2 MK |
1431 | btargs.count_exp = arg; |
1432 | btargs.show_locals = (fulltrace_arg >= 0); | |
d75e3c94 | 1433 | btargs.from_tty = from_tty; |
033a42c2 | 1434 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1435 | |
033a42c2 MK |
1436 | if (fulltrace_arg >= 0 && arglen > 0) |
1437 | xfree (arg); | |
c906108c SS |
1438 | |
1439 | if (old_chain) | |
c5aa993b | 1440 | do_cleanups (old_chain); |
c906108c SS |
1441 | } |
1442 | ||
1443 | static void | |
fba45db2 | 1444 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1445 | { |
d75e3c94 JJ |
1446 | struct backtrace_command_args btargs; |
1447 | btargs.count_exp = arg; | |
1448 | btargs.show_locals = 1; | |
1449 | btargs.from_tty = from_tty; | |
033a42c2 | 1450 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1451 | } |
c906108c | 1452 | \f |
c5aa993b | 1453 | |
033a42c2 | 1454 | /* Print the local variables of a block B active in FRAME on STREAM. |
c906108c SS |
1455 | Return 1 if any variables were printed; 0 otherwise. */ |
1456 | ||
1457 | static int | |
033a42c2 | 1458 | print_block_frame_locals (struct block *b, struct frame_info *frame, |
de4f826b | 1459 | int num_tabs, struct ui_file *stream) |
c906108c | 1460 | { |
de4f826b | 1461 | struct dict_iterator iter; |
de4f826b DC |
1462 | struct symbol *sym; |
1463 | int values_printed = 0; | |
033a42c2 | 1464 | int j; |
c906108c | 1465 | |
de4f826b | 1466 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1467 | { |
c906108c SS |
1468 | switch (SYMBOL_CLASS (sym)) |
1469 | { | |
1470 | case LOC_LOCAL: | |
1471 | case LOC_REGISTER: | |
1472 | case LOC_STATIC: | |
4c2df51b | 1473 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1474 | if (SYMBOL_IS_ARGUMENT (sym)) |
1475 | break; | |
c906108c | 1476 | values_printed = 1; |
aad95b57 | 1477 | print_variable_and_value (NULL, sym, frame, stream, 4 * num_tabs); |
c906108c SS |
1478 | break; |
1479 | ||
1480 | default: | |
1481 | /* Ignore symbols which are not locals. */ | |
1482 | break; | |
1483 | } | |
1484 | } | |
033a42c2 | 1485 | |
c906108c SS |
1486 | return values_printed; |
1487 | } | |
1488 | ||
1489 | /* Same, but print labels. */ | |
1490 | ||
1491 | static int | |
5af949e3 UW |
1492 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1493 | int *have_default, struct ui_file *stream) | |
c906108c | 1494 | { |
de4f826b | 1495 | struct dict_iterator iter; |
52f0bd74 AC |
1496 | struct symbol *sym; |
1497 | int values_printed = 0; | |
c906108c | 1498 | |
de4f826b | 1499 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1500 | { |
3567439c | 1501 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1502 | { |
1503 | if (*have_default) | |
1504 | continue; | |
1505 | *have_default = 1; | |
1506 | } | |
1507 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1508 | { | |
1509 | struct symtab_and_line sal; | |
79a45b7d | 1510 | struct value_print_options opts; |
c906108c SS |
1511 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1512 | values_printed = 1; | |
de5ad195 | 1513 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1514 | get_user_print_options (&opts); |
1515 | if (opts.addressprint) | |
c906108c SS |
1516 | { |
1517 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1518 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1519 | stream); | |
c906108c SS |
1520 | } |
1521 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1522 | sal.symtab->filename, sal.line); | |
1523 | } | |
1524 | } | |
033a42c2 | 1525 | |
c906108c SS |
1526 | return values_printed; |
1527 | } | |
1528 | ||
033a42c2 MK |
1529 | /* Print on STREAM all the local variables in frame FRAME, including |
1530 | all the blocks active in that frame at its current PC. | |
c906108c | 1531 | |
033a42c2 MK |
1532 | Returns 1 if the job was done, or 0 if nothing was printed because |
1533 | we have no info on the function running in FRAME. */ | |
c906108c SS |
1534 | |
1535 | static void | |
033a42c2 | 1536 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1537 | struct ui_file *stream) |
c906108c | 1538 | { |
033a42c2 | 1539 | struct block *block = get_frame_block (frame, 0); |
52f0bd74 | 1540 | int values_printed = 0; |
c906108c SS |
1541 | |
1542 | if (block == 0) | |
1543 | { | |
1544 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1545 | return; | |
1546 | } | |
c5aa993b | 1547 | |
033a42c2 | 1548 | while (block) |
c906108c | 1549 | { |
033a42c2 | 1550 | if (print_block_frame_locals (block, frame, num_tabs, stream)) |
c906108c | 1551 | values_printed = 1; |
033a42c2 | 1552 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1553 | continue to its superblock, the block of per-file symbols. |
1554 | Also do not continue to the containing function of an inlined | |
1555 | function. */ | |
c906108c SS |
1556 | if (BLOCK_FUNCTION (block)) |
1557 | break; | |
1558 | block = BLOCK_SUPERBLOCK (block); | |
1559 | } | |
1560 | ||
1561 | if (!values_printed) | |
033a42c2 | 1562 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1563 | } |
1564 | ||
1565 | /* Same, but print labels. */ | |
1566 | ||
1567 | static void | |
033a42c2 | 1568 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1569 | struct ui_file *stream) |
c906108c | 1570 | { |
801e3a5b JB |
1571 | #if 1 |
1572 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1573 | #else | |
52f0bd74 | 1574 | struct blockvector *bl; |
033a42c2 | 1575 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1576 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1577 | int values_printed = 0; |
c906108c SS |
1578 | int index, have_default = 0; |
1579 | char *blocks_printed; | |
033a42c2 | 1580 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1581 | |
1582 | if (block == 0) | |
1583 | { | |
1584 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1585 | return; | |
1586 | } | |
1587 | ||
1588 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1589 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1590 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1591 | ||
1592 | while (block != 0) | |
1593 | { | |
1594 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1595 | int last_index; | |
1596 | ||
1597 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1598 | error (_("blockvector blotch")); |
c906108c | 1599 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1600 | error (_("blockvector botch")); |
c906108c SS |
1601 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1602 | index += 1; | |
1603 | ||
1604 | /* Don't print out blocks that have gone by. */ | |
1605 | while (index < last_index | |
1606 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1607 | index++; | |
1608 | ||
1609 | while (index < last_index | |
1610 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1611 | { | |
1612 | if (blocks_printed[index] == 0) | |
1613 | { | |
5af949e3 UW |
1614 | if (print_block_frame_labels (gdbarch, |
1615 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 1616 | &have_default, stream)) |
c906108c SS |
1617 | values_printed = 1; |
1618 | blocks_printed[index] = 1; | |
1619 | } | |
1620 | index++; | |
1621 | } | |
1622 | if (have_default) | |
1623 | return; | |
1624 | if (values_printed && this_level_only) | |
1625 | return; | |
1626 | ||
033a42c2 | 1627 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1628 | continue to its superblock, the block of per-file symbols. |
1629 | Also do not continue to the containing function of an inlined | |
1630 | function. */ | |
c906108c SS |
1631 | if (BLOCK_FUNCTION (block)) |
1632 | break; | |
1633 | block = BLOCK_SUPERBLOCK (block); | |
1634 | } | |
1635 | ||
1636 | if (!values_printed && !this_level_only) | |
033a42c2 | 1637 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1638 | #endif |
c906108c SS |
1639 | } |
1640 | ||
c906108c | 1641 | void |
fba45db2 | 1642 | locals_info (char *args, int from_tty) |
c906108c | 1643 | { |
033a42c2 | 1644 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1645 | 0, gdb_stdout); |
c906108c SS |
1646 | } |
1647 | ||
1648 | static void | |
fba45db2 | 1649 | catch_info (char *ignore, int from_tty) |
c906108c | 1650 | { |
c5aa993b | 1651 | struct symtab_and_line *sal; |
c906108c | 1652 | |
dfdfb3ca JB |
1653 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1654 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1655 | 0, gdb_stdout); | |
c906108c SS |
1656 | } |
1657 | ||
1658 | static void | |
033a42c2 | 1659 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) |
c906108c | 1660 | { |
033a42c2 | 1661 | struct symbol *func = get_frame_function (frame); |
52f0bd74 | 1662 | struct block *b; |
de4f826b | 1663 | struct dict_iterator iter; |
52f0bd74 AC |
1664 | struct symbol *sym, *sym2; |
1665 | int values_printed = 0; | |
c906108c SS |
1666 | |
1667 | if (func == 0) | |
1668 | { | |
033a42c2 | 1669 | fprintf_filtered (stream, _("No symbol table info available.\n")); |
c906108c SS |
1670 | return; |
1671 | } | |
1672 | ||
1673 | b = SYMBOL_BLOCK_VALUE (func); | |
de4f826b | 1674 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1675 | { |
2a2d4dc3 AS |
1676 | /* Don't worry about things which aren't arguments. */ |
1677 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1678 | { |
c906108c | 1679 | values_printed = 1; |
c906108c SS |
1680 | |
1681 | /* We have to look up the symbol because arguments can have | |
1682 | two entries (one a parameter, one a local) and the one we | |
1683 | want is the local, which lookup_symbol will find for us. | |
1684 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1685 | small structure and gcc2 when the argument type is float | |
1686 | and it is passed as a double and converted to float by | |
1687 | the prologue (in the latter case the type of the LOC_ARG | |
1688 | symbol is double and the type of the LOC_LOCAL symbol is | |
1689 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1690 | are not combined in symbol-reading. */ | |
1691 | ||
3567439c | 1692 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 1693 | b, VAR_DOMAIN, NULL); |
aad95b57 TT |
1694 | print_variable_and_value (SYMBOL_PRINT_NAME (sym), sym2, |
1695 | frame, stream, 0); | |
c906108c SS |
1696 | } |
1697 | } | |
033a42c2 | 1698 | |
c906108c | 1699 | if (!values_printed) |
033a42c2 | 1700 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1701 | } |
1702 | ||
1703 | void | |
fba45db2 | 1704 | args_info (char *ignore, int from_tty) |
c906108c | 1705 | { |
033a42c2 | 1706 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1707 | gdb_stdout); |
c906108c SS |
1708 | } |
1709 | ||
1710 | ||
1711 | static void | |
fba45db2 | 1712 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1713 | { |
c5aa993b JM |
1714 | args_info (ignore, from_tty); |
1715 | locals_info (ignore, from_tty); | |
c906108c | 1716 | } |
c906108c | 1717 | \f |
c5aa993b | 1718 | |
033a42c2 MK |
1719 | /* Select frame FRAME. Also print the stack frame and show the source |
1720 | if this is the tui version. */ | |
bedfa57b | 1721 | static void |
033a42c2 | 1722 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1723 | { |
033a42c2 MK |
1724 | select_frame (frame); |
1725 | if (frame) | |
1726 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1727 | } |
c906108c | 1728 | \f |
c906108c | 1729 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1730 | Can return zero under various legitimate circumstances. |
1731 | ||
1732 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1733 | code address within the block returned. We use this to decide | |
1734 | which macros are in scope. */ | |
c906108c SS |
1735 | |
1736 | struct block * | |
ae767bfb | 1737 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 1738 | { |
d729566a | 1739 | if (!has_stack_frames ()) |
8ea051c5 PA |
1740 | return 0; |
1741 | ||
206415a3 | 1742 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1743 | } |
1744 | ||
1745 | /* Find a frame a certain number of levels away from FRAME. | |
1746 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1747 | Positive means go to earlier frames (up); negative, the reverse. | |
1748 | The int that contains the number of levels is counted toward | |
1749 | zero as the frames for those levels are found. | |
1750 | If the top or bottom frame is reached, that frame is returned, | |
1751 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1752 | how much farther the original request asked to go. */ | |
1753 | ||
1754 | struct frame_info * | |
033a42c2 | 1755 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1756 | { |
033a42c2 MK |
1757 | /* Going up is simple: just call get_prev_frame enough times or |
1758 | until the initial frame is reached. */ | |
c906108c SS |
1759 | while (*level_offset_ptr > 0) |
1760 | { | |
033a42c2 MK |
1761 | struct frame_info *prev = get_prev_frame (frame); |
1762 | if (!prev) | |
c906108c SS |
1763 | break; |
1764 | (*level_offset_ptr)--; | |
1765 | frame = prev; | |
1766 | } | |
033a42c2 | 1767 | |
c906108c | 1768 | /* Going down is just as simple. */ |
033a42c2 | 1769 | while (*level_offset_ptr < 0) |
c906108c | 1770 | { |
033a42c2 MK |
1771 | struct frame_info *next = get_next_frame (frame); |
1772 | if (!next) | |
1773 | break; | |
1774 | (*level_offset_ptr)++; | |
1775 | frame = next; | |
c906108c | 1776 | } |
033a42c2 | 1777 | |
c906108c SS |
1778 | return frame; |
1779 | } | |
1780 | ||
033a42c2 MK |
1781 | /* The "select_frame" command. With no argument this is a NOP. |
1782 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1783 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1784 | ||
1785 | See parse_frame_specification for more info on proper frame | |
1786 | expressions. */ | |
c906108c | 1787 | |
8b93c638 | 1788 | void |
fba45db2 | 1789 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1790 | { |
1c8831c5 | 1791 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1792 | } |
1793 | ||
033a42c2 MK |
1794 | /* The "frame" command. With no argument, print the selected frame |
1795 | briefly. With an argument, behave like select_frame and then print | |
1796 | the selected frame. */ | |
c906108c | 1797 | |
033a42c2 | 1798 | static void |
fba45db2 | 1799 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1800 | { |
1801 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1802 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1803 | } |
1804 | ||
033a42c2 | 1805 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1806 | |
7a292a7a | 1807 | static void |
fba45db2 | 1808 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1809 | { |
033a42c2 | 1810 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1811 | } |
c906108c | 1812 | |
033a42c2 MK |
1813 | /* Select the frame up one or COUNT_EXP stack levels from the |
1814 | previously selected frame, and print it briefly. */ | |
c906108c | 1815 | |
c906108c | 1816 | static void |
fba45db2 | 1817 | up_silently_base (char *count_exp) |
c906108c | 1818 | { |
033a42c2 MK |
1819 | struct frame_info *frame; |
1820 | int count = 1; | |
1821 | ||
c906108c | 1822 | if (count_exp) |
bb518678 | 1823 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1824 | |
033a42c2 MK |
1825 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1826 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1827 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1828 | select_frame (frame); |
c906108c SS |
1829 | } |
1830 | ||
1831 | static void | |
fba45db2 | 1832 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1833 | { |
c5aa993b | 1834 | up_silently_base (count_exp); |
c906108c SS |
1835 | } |
1836 | ||
1837 | static void | |
fba45db2 | 1838 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1839 | { |
1840 | up_silently_base (count_exp); | |
b04f3ab4 | 1841 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1842 | } |
1843 | ||
033a42c2 MK |
1844 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1845 | selected frame, and print it briefly. */ | |
c906108c | 1846 | |
c906108c | 1847 | static void |
fba45db2 | 1848 | down_silently_base (char *count_exp) |
c906108c | 1849 | { |
52f0bd74 | 1850 | struct frame_info *frame; |
033a42c2 | 1851 | int count = -1; |
c906108c | 1852 | if (count_exp) |
bb518678 | 1853 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1854 | |
033a42c2 MK |
1855 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1856 | if (count != 0 && count_exp == NULL) | |
c906108c | 1857 | { |
033a42c2 MK |
1858 | /* We only do this if COUNT_EXP is not specified. That way |
1859 | "down" means to really go down (and let me know if that is | |
1860 | impossible), but "down 9999" can be used to mean go all the | |
1861 | way down without getting an error. */ | |
c906108c | 1862 | |
033a42c2 | 1863 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1864 | } |
1865 | ||
0f7d239c | 1866 | select_frame (frame); |
c906108c SS |
1867 | } |
1868 | ||
c906108c | 1869 | static void |
fba45db2 | 1870 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1871 | { |
1872 | down_silently_base (count_exp); | |
c906108c SS |
1873 | } |
1874 | ||
1875 | static void | |
fba45db2 | 1876 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1877 | { |
1878 | down_silently_base (count_exp); | |
b04f3ab4 | 1879 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1880 | } |
1881 | \f | |
033a42c2 | 1882 | |
8b93c638 | 1883 | void |
fba45db2 | 1884 | return_command (char *retval_exp, int from_tty) |
c906108c | 1885 | { |
5ed92fa8 | 1886 | struct frame_info *thisframe; |
d80b854b | 1887 | struct gdbarch *gdbarch; |
c906108c | 1888 | struct symbol *thisfun; |
3d6d86c6 | 1889 | struct value *return_value = NULL; |
fc70c2a0 | 1890 | const char *query_prefix = ""; |
c906108c | 1891 | |
5ed92fa8 UW |
1892 | thisframe = get_selected_frame ("No selected frame."); |
1893 | thisfun = get_frame_function (thisframe); | |
d80b854b | 1894 | gdbarch = get_frame_arch (thisframe); |
c906108c | 1895 | |
edb3359d DJ |
1896 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
1897 | error (_("Can not force return from an inlined function.")); | |
1898 | ||
fc70c2a0 AC |
1899 | /* Compute the return value. If the computation triggers an error, |
1900 | let it bail. If the return type can't be handled, set | |
1901 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1902 | message. */ | |
c906108c SS |
1903 | if (retval_exp) |
1904 | { | |
61ff14c6 JK |
1905 | struct expression *retval_expr = parse_expression (retval_exp); |
1906 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
1907 | struct type *return_type = NULL; |
1908 | ||
fc70c2a0 AC |
1909 | /* Compute the return value. Should the computation fail, this |
1910 | call throws an error. */ | |
61ff14c6 | 1911 | return_value = evaluate_expression (retval_expr); |
c906108c | 1912 | |
fc70c2a0 AC |
1913 | /* Cast return value to the return type of the function. Should |
1914 | the cast fail, this call throws an error. */ | |
c906108c SS |
1915 | if (thisfun != NULL) |
1916 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1917 | if (return_type == NULL) | |
61ff14c6 JK |
1918 | { |
1919 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
1920 | error (_("Return value type not available for selected " | |
1921 | "stack frame.\n" | |
1922 | "Please use an explicit cast of the value to return.")); | |
1923 | return_type = value_type (return_value); | |
1924 | } | |
1925 | do_cleanups (old_chain); | |
3e9a183c | 1926 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1927 | return_value = value_cast (return_type, return_value); |
1928 | ||
fc70c2a0 AC |
1929 | /* Make sure the value is fully evaluated. It may live in the |
1930 | stack frame we're about to pop. */ | |
d69fe07e | 1931 | if (value_lazy (return_value)) |
c906108c | 1932 | value_fetch_lazy (return_value); |
c906108c | 1933 | |
667e784f AC |
1934 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1935 | /* If the return-type is "void", don't try to find the | |
1936 | return-value's location. However, do still evaluate the | |
1937 | return expression so that, even when the expression result | |
1938 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1939 | occur. */ |
667e784f | 1940 | return_value = NULL; |
42e2132c | 1941 | else if (thisfun != NULL |
d80b854b UW |
1942 | && using_struct_return (gdbarch, |
1943 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 1944 | { |
667e784f AC |
1945 | query_prefix = "\ |
1946 | The location at which to store the function's return value is unknown.\n\ | |
1947 | If you continue, the return value that you specified will be ignored.\n"; | |
1948 | return_value = NULL; | |
fc70c2a0 | 1949 | } |
c906108c SS |
1950 | } |
1951 | ||
fc70c2a0 AC |
1952 | /* Does an interactive user really want to do this? Include |
1953 | information, such as how well GDB can handle the return value, in | |
1954 | the query message. */ | |
1955 | if (from_tty) | |
1956 | { | |
1957 | int confirmed; | |
1958 | if (thisfun == NULL) | |
e2e0b3e5 | 1959 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
1960 | query_prefix); |
1961 | else | |
e2e0b3e5 | 1962 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
1963 | SYMBOL_PRINT_NAME (thisfun)); |
1964 | if (!confirmed) | |
8a3fe4f8 | 1965 | error (_("Not confirmed")); |
fc70c2a0 | 1966 | } |
c906108c | 1967 | |
a45ae3ed UW |
1968 | /* Discard the selected frame and all frames inner-to it. */ |
1969 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 1970 | |
a1f5b845 | 1971 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
1972 | if (return_value != NULL) |
1973 | { | |
df407dfe | 1974 | struct type *return_type = value_type (return_value); |
7500260a | 1975 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
1976 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
1977 | ||
1978 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
1979 | NULL, NULL) | |
750eb019 | 1980 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 1981 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 1982 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 1983 | value_contents (return_value) /*write*/); |
fc70c2a0 | 1984 | } |
1a2aab69 | 1985 | |
fc70c2a0 AC |
1986 | /* If we are at the end of a call dummy now, pop the dummy frame |
1987 | too. */ | |
e8bcf01f AC |
1988 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
1989 | frame_pop (get_current_frame ()); | |
1a2aab69 | 1990 | |
c906108c | 1991 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
1992 | if (from_tty) |
1993 | frame_command ("0", 1); | |
1994 | else | |
1995 | select_frame_command ("0", 0); | |
1996 | } | |
1997 | ||
033a42c2 MK |
1998 | /* Sets the scope to input function name, provided that the function |
1999 | is within the current stack frame */ | |
c906108c SS |
2000 | |
2001 | struct function_bounds | |
2002 | { | |
2003 | CORE_ADDR low, high; | |
2004 | }; | |
2005 | ||
2006 | static void | |
fba45db2 | 2007 | func_command (char *arg, int from_tty) |
c906108c | 2008 | { |
033a42c2 | 2009 | struct frame_info *frame; |
c906108c SS |
2010 | int found = 0; |
2011 | struct symtabs_and_lines sals; | |
2012 | int i; | |
2013 | int level = 1; | |
033a42c2 | 2014 | struct function_bounds *func_bounds = NULL; |
c906108c | 2015 | |
033a42c2 | 2016 | if (arg != NULL) |
c906108c SS |
2017 | return; |
2018 | ||
033a42c2 | 2019 | frame = parse_frame_specification ("0"); |
c906108c SS |
2020 | sals = decode_line_spec (arg, 1); |
2021 | func_bounds = (struct function_bounds *) xmalloc ( | |
2022 | sizeof (struct function_bounds) * sals.nelts); | |
2023 | for (i = 0; (i < sals.nelts && !found); i++) | |
2024 | { | |
033a42c2 MK |
2025 | if (sals.sals[i].pc == 0 |
2026 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2027 | &func_bounds[i].low, | |
2028 | &func_bounds[i].high) == 0) | |
c906108c | 2029 | { |
033a42c2 | 2030 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2031 | } |
2032 | } | |
2033 | ||
2034 | do | |
2035 | { | |
2036 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2037 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2038 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2039 | if (!found) |
2040 | { | |
2041 | level = 1; | |
033a42c2 | 2042 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2043 | } |
2044 | } | |
2045 | while (!found && level == 0); | |
2046 | ||
2047 | if (func_bounds) | |
b8c9b27d | 2048 | xfree (func_bounds); |
c906108c SS |
2049 | |
2050 | if (!found) | |
a3f17187 | 2051 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2052 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2053 | select_and_print_frame (frame); |
c906108c SS |
2054 | } |
2055 | ||
2056 | /* Gets the language of the current frame. */ | |
2057 | ||
2058 | enum language | |
fba45db2 | 2059 | get_frame_language (void) |
c906108c | 2060 | { |
206415a3 | 2061 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2062 | |
033a42c2 | 2063 | if (frame) |
c906108c | 2064 | { |
7ae4c3a5 | 2065 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2066 | associated symtab. To retrieve this symtab, we use the frame |
2067 | PC. However we cannot use the frame PC as is, because it | |
2068 | usually points to the instruction following the "call", which | |
2069 | is sometimes the first instruction of another function. So | |
2070 | we rely on get_frame_address_in_block(), it provides us with | |
2071 | a PC that is guaranteed to be inside the frame's code | |
2072 | block. */ | |
2073 | CORE_ADDR pc = get_frame_address_in_block (frame); | |
2074 | struct symtab *s = find_pc_symtab (pc); | |
2075 | ||
c906108c | 2076 | if (s) |
033a42c2 | 2077 | return s->language; |
c906108c | 2078 | } |
c906108c | 2079 | |
033a42c2 | 2080 | return language_unknown; |
c906108c SS |
2081 | } |
2082 | \f | |
033a42c2 MK |
2083 | |
2084 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2085 | void _initialize_stack (void); | |
2086 | ||
c906108c | 2087 | void |
fba45db2 | 2088 | _initialize_stack (void) |
c906108c | 2089 | { |
c5aa993b | 2090 | #if 0 |
c906108c SS |
2091 | backtrace_limit = 30; |
2092 | #endif | |
2093 | ||
1bedd215 AC |
2094 | add_com ("return", class_stack, return_command, _("\ |
2095 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2096 | Control remains in the debugger, but when you continue\n\ |
2097 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2098 | If an argument is given, it is an expression for the value to return.")); |
2099 | ||
2100 | add_com ("up", class_stack, up_command, _("\ | |
2101 | Select and print stack frame that called this one.\n\ | |
2102 | An argument says how many frames up to go.")); | |
2103 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2104 | Same as the `up' command, but does not print anything.\n\ | |
2105 | This is useful in command scripts.")); | |
2106 | ||
2107 | add_com ("down", class_stack, down_command, _("\ | |
2108 | Select and print stack frame called by this one.\n\ | |
2109 | An argument says how many frames down to go.")); | |
c906108c SS |
2110 | add_com_alias ("do", "down", class_stack, 1); |
2111 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2112 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2113 | Same as the `down' command, but does not print anything.\n\ | |
2114 | This is useful in command scripts.")); | |
c906108c | 2115 | |
1bedd215 AC |
2116 | add_com ("frame", class_stack, frame_command, _("\ |
2117 | Select and print a stack frame.\n\ | |
c906108c SS |
2118 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ |
2119 | An argument specifies the frame to select.\n\ | |
2120 | It can be a stack frame number or the address of the frame.\n\ | |
2121 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2122 | a command file or a user-defined command.")); |
c906108c SS |
2123 | |
2124 | add_com_alias ("f", "frame", class_stack, 1); | |
2125 | ||
2126 | if (xdb_commands) | |
2127 | { | |
c5aa993b | 2128 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2129 | _("Print the current stack frame.\n")); |
c906108c SS |
2130 | add_com_alias ("V", "frame", class_stack, 1); |
2131 | } | |
1bedd215 AC |
2132 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2133 | Select a stack frame without printing anything.\n\ | |
c906108c | 2134 | An argument specifies the frame to select.\n\ |
1bedd215 | 2135 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2136 | |
1bedd215 AC |
2137 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2138 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
c906108c | 2139 | With a negative argument, print outermost -COUNT frames.\n\ |
1bedd215 | 2140 | Use of the 'full' qualifier also prints the values of the local variables.\n")); |
c906108c SS |
2141 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2142 | if (xdb_commands) | |
2143 | { | |
2144 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 AC |
2145 | add_com ("T", class_stack, backtrace_full_command, _("\ |
2146 | Print backtrace of all stack frames, or innermost COUNT frames \n\ | |
c906108c SS |
2147 | and the values of the local variables.\n\ |
2148 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2149 | Usage: T <count>\n")); |
c906108c SS |
2150 | } |
2151 | ||
2152 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2153 | add_info ("stack", backtrace_command, | |
1bedd215 | 2154 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2155 | add_info_alias ("s", "stack", 1); |
2156 | add_info ("frame", frame_info, | |
1bedd215 | 2157 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2158 | add_info_alias ("f", "frame", 1); |
2159 | add_info ("locals", locals_info, | |
1bedd215 | 2160 | _("Local variables of current stack frame.")); |
c906108c | 2161 | add_info ("args", args_info, |
1bedd215 | 2162 | _("Argument variables of current stack frame.")); |
c906108c | 2163 | if (xdb_commands) |
c5aa993b | 2164 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2165 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2166 | |
2167 | if (dbx_commands) | |
1bedd215 AC |
2168 | add_com ("func", class_stack, func_command, _("\ |
2169 | Select the stack frame that contains <func>.\n\ | |
2170 | Usage: func <name>\n")); | |
c906108c SS |
2171 | |
2172 | add_info ("catch", catch_info, | |
1bedd215 | 2173 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2174 | |
88408340 JB |
2175 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2176 | print_frame_arguments_choices, &print_frame_arguments, | |
2177 | _("Set printing of non-scalar frame arguments"), | |
2178 | _("Show printing of non-scalar frame arguments"), | |
2179 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2180 | ||
30c33a9f HZ |
2181 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2182 | &disassemble_next_line, _("\ | |
80a0ea0f EZ |
2183 | Set whether to disassemble next source line or insn when execution stops."), _("\ |
2184 | Show whether to disassemble next source line or insn when execution stops."), _("\ | |
2185 | If ON, GDB will display disassembly of the next source line, in addition\n\ | |
2186 | to displaying the source line itself. If the next source line cannot\n\ | |
2187 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2188 | will display disassembly of next instruction instead of showing the\n\ | |
2189 | source line.\n\ | |
2190 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2191 | cannot be displayed.\n\ | |
2192 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2193 | source line."), | |
30c33a9f HZ |
2194 | NULL, |
2195 | show_disassemble_next_line, | |
2196 | &setlist, &showlist); | |
a362e3d3 | 2197 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
30c33a9f | 2198 | |
c906108c | 2199 | #if 0 |
1a966eab AC |
2200 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, _(\ |
2201 | "Specify maximum number of frames for \"backtrace\" to print by default."), | |
c906108c | 2202 | &setlist); |
1bedd215 AC |
2203 | add_info ("backtrace-limit", backtrace_limit_info, _("\ |
2204 | The maximum number of frames for \"backtrace\" to print by default.")); | |
c906108c SS |
2205 | #endif |
2206 | } |