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 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
4c38e0a4 | 5 | 2009, 2010 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 | |
ccefe4c4 TT |
55 | #include "psymtab.h" |
56 | #include "symfile.h" | |
57 | ||
9a4105ab | 58 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 59 | |
88408340 JB |
60 | /* The possible choices of "set print frame-arguments, and the value |
61 | of this setting. */ | |
62 | ||
63 | static const char *print_frame_arguments_choices[] = | |
64 | {"all", "scalars", "none", NULL}; | |
476f7b68 | 65 | static const char *print_frame_arguments = "scalars"; |
88408340 | 66 | |
a58dd373 | 67 | /* Prototypes for local functions. */ |
c906108c | 68 | |
d9fcf2fb JM |
69 | static void print_frame_local_vars (struct frame_info *, int, |
70 | struct ui_file *); | |
c906108c | 71 | |
033a42c2 MK |
72 | static void print_frame (struct frame_info *frame, int print_level, |
73 | enum print_what print_what, int print_args, | |
c5394b80 JM |
74 | struct symtab_and_line sal); |
75 | ||
c906108c SS |
76 | /* Zero means do things normally; we are interacting directly with the |
77 | user. One means print the full filename and linenumber when a | |
78 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
79 | parse. Two means print similar annotations, but in many more | |
80 | cases and in a slightly different syntax. */ | |
81 | ||
82 | int annotation_level = 0; | |
c906108c | 83 | \f |
c5aa993b JM |
84 | |
85 | struct print_stack_frame_args | |
033a42c2 MK |
86 | { |
87 | struct frame_info *frame; | |
88 | int print_level; | |
89 | enum print_what print_what; | |
90 | int print_args; | |
91 | }; | |
92 | ||
93 | /* Show or print the frame arguments; stub for catch_errors. */ | |
94 | ||
c906108c | 95 | static int |
fba45db2 | 96 | print_stack_frame_stub (void *args) |
c906108c | 97 | { |
c789492a | 98 | struct print_stack_frame_args *p = args; |
033a42c2 | 99 | int center = (p->print_what == SRC_LINE || p->print_what == SRC_AND_LOC); |
c906108c | 100 | |
033a42c2 MK |
101 | print_frame_info (p->frame, p->print_level, p->print_what, p->print_args); |
102 | set_current_sal_from_frame (p->frame, center); | |
c906108c SS |
103 | return 0; |
104 | } | |
105 | ||
edb3359d DJ |
106 | /* Return 1 if we should display the address in addition to the location, |
107 | because we are in the middle of a statement. */ | |
108 | ||
109 | static int | |
110 | frame_show_address (struct frame_info *frame, | |
111 | struct symtab_and_line sal) | |
112 | { | |
113 | /* If there is a line number, but no PC, then there is no location | |
114 | information associated with this sal. The only way that should | |
115 | happen is for the call sites of inlined functions (SAL comes from | |
116 | find_frame_sal). Otherwise, we would have some PC range if the | |
117 | SAL came from a line table. */ | |
118 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
119 | { | |
120 | if (get_next_frame (frame) == NULL) | |
121 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
122 | else | |
123 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | return get_frame_pc (frame) != sal.pc; | |
128 | } | |
129 | ||
033a42c2 | 130 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
131 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
132 | relative level, function name, argument list, and file name and | |
133 | line number. If the frame's PC is not at the beginning of the | |
134 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
135 | |
136 | void | |
033a42c2 | 137 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 138 | enum print_what print_what) |
c906108c SS |
139 | { |
140 | struct print_stack_frame_args args; | |
141 | ||
033a42c2 | 142 | args.frame = frame; |
0faf0076 AC |
143 | args.print_level = print_level; |
144 | args.print_what = print_what; | |
aaf9e9fd DP |
145 | /* For mi, alway print location and address. */ |
146 | args.print_what = ui_out_is_mi_like_p (uiout) ? LOC_AND_ADDRESS : print_what; | |
0faf0076 | 147 | args.print_args = 1; |
c906108c | 148 | |
5c3ce3f7 | 149 | catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ERROR); |
7789c6f5 | 150 | } |
c906108c | 151 | |
c5aa993b JM |
152 | struct print_args_args |
153 | { | |
c906108c | 154 | struct symbol *func; |
033a42c2 | 155 | struct frame_info *frame; |
d9fcf2fb | 156 | struct ui_file *stream; |
c906108c SS |
157 | }; |
158 | ||
033a42c2 | 159 | static int print_args_stub (void *args); |
c906108c | 160 | |
033a42c2 MK |
161 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
162 | the offset of the first nameless argument, and NUM is the number of | |
163 | nameless arguments to print. FIRST is nonzero if this is the first | |
164 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
165 | |
166 | static void | |
033a42c2 | 167 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
168 | int first, struct ui_file *stream) |
169 | { | |
e17a4113 UW |
170 | struct gdbarch *gdbarch = get_frame_arch (frame); |
171 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
172 | int i; |
173 | CORE_ADDR argsaddr; | |
174 | long arg_value; | |
175 | ||
176 | for (i = 0; i < num; i++) | |
177 | { | |
178 | QUIT; | |
033a42c2 | 179 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
180 | if (!argsaddr) |
181 | return; | |
e17a4113 UW |
182 | arg_value = read_memory_integer (argsaddr + start, |
183 | sizeof (int), byte_order); | |
8d3b0994 AC |
184 | if (!first) |
185 | fprintf_filtered (stream, ", "); | |
186 | fprintf_filtered (stream, "%ld", arg_value); | |
187 | first = 0; | |
188 | start += sizeof (int); | |
189 | } | |
190 | } | |
191 | ||
033a42c2 MK |
192 | /* Print the arguments of frame FRAME on STREAM, given the function |
193 | FUNC running in that frame (as a symbol), where NUM is the number | |
194 | of arguments according to the stack frame (or -1 if the number of | |
195 | arguments is unknown). */ | |
8d3b0994 | 196 | |
e3168615 | 197 | /* Note that currently the "number of arguments according to the |
033a42c2 | 198 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 199 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
200 | |
201 | static void | |
033a42c2 MK |
202 | print_frame_args (struct symbol *func, struct frame_info *frame, |
203 | int num, struct ui_file *stream) | |
8d3b0994 | 204 | { |
8d3b0994 | 205 | int first = 1; |
8d3b0994 | 206 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
207 | at the highest offset, or -1 if we haven't come to a stack |
208 | argument yet. */ | |
8d3b0994 | 209 | long highest_offset = -1; |
8d3b0994 AC |
210 | /* Number of ints of arguments that we have printed so far. */ |
211 | int args_printed = 0; | |
212 | struct cleanup *old_chain, *list_chain; | |
213 | struct ui_stream *stb; | |
a6bac58e TT |
214 | /* True if we should print arguments, false otherwise. */ |
215 | int print_args = strcmp (print_frame_arguments, "none"); | |
216 | /* True in "summary" mode, false otherwise. */ | |
217 | int summary = !strcmp (print_frame_arguments, "scalars"); | |
8d3b0994 AC |
218 | |
219 | stb = ui_out_stream_new (uiout); | |
220 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
221 | ||
222 | if (func) | |
223 | { | |
033a42c2 MK |
224 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
225 | struct dict_iterator iter; | |
226 | struct symbol *sym; | |
227 | struct value *val; | |
8d3b0994 | 228 | |
de4f826b | 229 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
230 | { |
231 | QUIT; | |
232 | ||
233 | /* Keep track of the highest stack argument offset seen, and | |
234 | skip over any kinds of symbols we don't care about. */ | |
235 | ||
2a2d4dc3 AS |
236 | if (!SYMBOL_IS_ARGUMENT (sym)) |
237 | continue; | |
238 | ||
8d3b0994 AC |
239 | switch (SYMBOL_CLASS (sym)) |
240 | { | |
241 | case LOC_ARG: | |
242 | case LOC_REF_ARG: | |
243 | { | |
244 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 245 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
246 | |
247 | /* Compute address of next argument by adding the size of | |
248 | this argument and rounding to an int boundary. */ | |
249 | current_offset = | |
250 | ((current_offset + arg_size + sizeof (int) - 1) | |
251 | & ~(sizeof (int) - 1)); | |
252 | ||
033a42c2 MK |
253 | /* If this is the highest offset seen yet, set |
254 | highest_offset. */ | |
8d3b0994 AC |
255 | if (highest_offset == -1 |
256 | || (current_offset > highest_offset)) | |
257 | highest_offset = current_offset; | |
258 | ||
033a42c2 MK |
259 | /* Add the number of ints we're about to print to |
260 | args_printed. */ | |
8d3b0994 AC |
261 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
262 | } | |
263 | ||
033a42c2 MK |
264 | /* We care about types of symbols, but don't need to |
265 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 266 | case LOC_REGISTER: |
8d3b0994 | 267 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
268 | case LOC_COMPUTED: |
269 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 270 | default: |
2a2d4dc3 | 271 | break; |
8d3b0994 AC |
272 | } |
273 | ||
274 | /* We have to look up the symbol because arguments can have | |
275 | two entries (one a parameter, one a local) and the one we | |
276 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 277 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
278 | small structure and gcc2 when the argument type is float |
279 | and it is passed as a double and converted to float by | |
280 | the prologue (in the latter case the type of the LOC_ARG | |
281 | symbol is double and the type of the LOC_LOCAL symbol is | |
282 | float). */ | |
033a42c2 MK |
283 | /* But if the parameter name is null, don't try it. Null |
284 | parameter names occur on the RS/6000, for traceback | |
285 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 286 | |
3567439c | 287 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
288 | { |
289 | struct symbol *nsym; | |
3567439c | 290 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 291 | b, VAR_DOMAIN, NULL); |
55765a25 | 292 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
293 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
294 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 295 | { |
033a42c2 MK |
296 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
297 | that it was passed on the stack and loaded into a | |
298 | register, or passed in a register and stored in a | |
299 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
300 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
301 | |
302 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
303 | |
304 | (1) Because find_saved_registers may be slow for | |
305 | remote debugging. | |
306 | ||
307 | (2) Because registers are often re-used and stack | |
308 | slots rarely (never?) are. Therefore using | |
309 | the stack slot is much less likely to print | |
310 | garbage. | |
8d3b0994 AC |
311 | |
312 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
313 | |
314 | (1) So that the backtrace prints the same value | |
315 | as "print foo". I see no compelling reason | |
316 | why this needs to be the case; having the | |
317 | backtrace print the value which was passed | |
318 | in, and "print foo" print the value as | |
319 | modified within the called function, makes | |
320 | perfect sense to me. | |
321 | ||
322 | Additional note: It might be nice if "info args" | |
323 | displayed both values. | |
324 | ||
325 | One more note: There is a case with SPARC | |
326 | structure passing where we need to use the | |
327 | LOC_REGISTER, but this is dealt with by creating | |
328 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
329 | |
330 | /* Leave sym (the LOC_ARG) alone. */ | |
331 | ; | |
332 | } | |
333 | else | |
334 | sym = nsym; | |
335 | } | |
336 | ||
337 | /* Print the current arg. */ | |
338 | if (!first) | |
339 | ui_out_text (uiout, ", "); | |
340 | ui_out_wrap_hint (uiout, " "); | |
341 | ||
342 | annotate_arg_begin (); | |
343 | ||
344 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
345 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
033a42c2 MK |
346 | SYMBOL_LANGUAGE (sym), |
347 | DMGL_PARAMS | DMGL_ANSI); | |
8d3b0994 AC |
348 | ui_out_field_stream (uiout, "name", stb); |
349 | annotate_arg_name_end (); | |
350 | ui_out_text (uiout, "="); | |
351 | ||
a6bac58e | 352 | if (print_args) |
88408340 JB |
353 | { |
354 | /* Avoid value_print because it will deref ref parameters. | |
355 | We just want to print their addresses. Print ??? for | |
356 | args whose address we do not know. We pass 2 as | |
357 | "recurse" to val_print because our standard indentation | |
358 | here is 4 spaces, and val_print indents 2 for each | |
359 | recurse. */ | |
360 | val = read_var_value (sym, frame); | |
361 | ||
362 | annotate_arg_value (val == NULL ? NULL : value_type (val)); | |
363 | ||
364 | if (val) | |
365 | { | |
d8ca156b | 366 | const struct language_defn *language; |
79a45b7d | 367 | struct value_print_options opts; |
d8ca156b JB |
368 | |
369 | /* Use the appropriate language to display our symbol, | |
370 | unless the user forced the language to a specific | |
371 | language. */ | |
372 | if (language_mode == language_mode_auto) | |
373 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
374 | else | |
375 | language = current_language; | |
376 | ||
79a45b7d TT |
377 | get_raw_print_options (&opts); |
378 | opts.deref_ref = 0; | |
a6bac58e TT |
379 | opts.summary = summary; |
380 | common_val_print (val, stb->stream, 2, &opts, language); | |
88408340 JB |
381 | ui_out_field_stream (uiout, "value", stb); |
382 | } | |
383 | else | |
384 | ui_out_text (uiout, "???"); | |
385 | } | |
386 | else | |
387 | ui_out_text (uiout, "..."); | |
8d3b0994 | 388 | |
8d3b0994 AC |
389 | |
390 | /* Invoke ui_out_tuple_end. */ | |
391 | do_cleanups (list_chain); | |
392 | ||
393 | annotate_arg_end (); | |
394 | ||
395 | first = 0; | |
396 | } | |
397 | } | |
398 | ||
399 | /* Don't print nameless args in situations where we don't know | |
400 | enough about the stack to find them. */ | |
401 | if (num != -1) | |
402 | { | |
403 | long start; | |
404 | ||
405 | if (highest_offset == -1) | |
7500260a | 406 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
407 | else |
408 | start = highest_offset; | |
409 | ||
033a42c2 | 410 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
411 | first, stream); |
412 | } | |
033a42c2 | 413 | |
8d3b0994 AC |
414 | do_cleanups (old_chain); |
415 | } | |
416 | ||
033a42c2 | 417 | /* Stub for catch_errors. */ |
c906108c SS |
418 | |
419 | static int | |
4efb68b1 | 420 | print_args_stub (void *args) |
c906108c | 421 | { |
033a42c2 | 422 | struct print_args_args *p = args; |
12368003 | 423 | struct gdbarch *gdbarch = get_frame_arch (p->frame); |
c906108c | 424 | int numargs; |
c906108c | 425 | |
12368003 | 426 | if (gdbarch_frame_num_args_p (gdbarch)) |
983a287a | 427 | { |
12368003 | 428 | numargs = gdbarch_frame_num_args (gdbarch, p->frame); |
983a287a AC |
429 | gdb_assert (numargs >= 0); |
430 | } | |
431 | else | |
432 | numargs = -1; | |
033a42c2 | 433 | print_frame_args (p->func, p->frame, numargs, p->stream); |
c906108c SS |
434 | return 0; |
435 | } | |
436 | ||
033a42c2 MK |
437 | /* Set the current source and line to the location given by frame |
438 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
439 | line is in the center of the next 'list'. */ | |
c789492a | 440 | |
7abfe014 | 441 | void |
033a42c2 | 442 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
443 | { |
444 | struct symtab_and_line sal; | |
445 | ||
033a42c2 | 446 | find_frame_sal (frame, &sal); |
c789492a FL |
447 | if (sal.symtab) |
448 | { | |
449 | if (center) | |
450 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
451 | set_current_source_symtab_and_line (&sal); | |
452 | } | |
453 | } | |
454 | ||
30c33a9f HZ |
455 | /* If ON, GDB will display disassembly of the next source line when |
456 | execution of the program being debugged stops. | |
481df73e HZ |
457 | If AUTO (which is the default), or there's no line info to determine |
458 | the source line of the next instruction, display disassembly of next | |
459 | instruction instead. */ | |
30c33a9f HZ |
460 | |
461 | static enum auto_boolean disassemble_next_line; | |
462 | ||
463 | static void | |
464 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
465 | struct cmd_list_element *c, | |
466 | const char *value) | |
467 | { | |
468 | fprintf_filtered (file, _("\ | |
469 | Debugger's willingness to use disassemble-next-line is %s.\n"), | |
470 | value); | |
471 | } | |
472 | ||
473 | /* Show assembly codes; stub for catch_errors. */ | |
474 | ||
475 | struct gdb_disassembly_stub_args | |
476 | { | |
13274fc3 | 477 | struct gdbarch *gdbarch; |
30c33a9f HZ |
478 | int how_many; |
479 | CORE_ADDR low; | |
480 | CORE_ADDR high; | |
481 | }; | |
482 | ||
483 | static void | |
484 | gdb_disassembly_stub (void *args) | |
485 | { | |
486 | struct gdb_disassembly_stub_args *p = args; | |
f89b749f | 487 | |
e6158f16 | 488 | gdb_disassembly (p->gdbarch, uiout, 0, |
858031d9 | 489 | DISASSEMBLY_RAW_INSN, p->how_many, |
e6158f16 | 490 | p->low, p->high); |
30c33a9f HZ |
491 | } |
492 | ||
493 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly | |
494 | because it will be broken by filter sometime. */ | |
495 | ||
496 | static void | |
13274fc3 UW |
497 | do_gdb_disassembly (struct gdbarch *gdbarch, |
498 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
499 | { |
500 | volatile struct gdb_exception exception; | |
501 | struct gdb_disassembly_stub_args args; | |
502 | ||
13274fc3 | 503 | args.gdbarch = gdbarch; |
30c33a9f HZ |
504 | args.how_many = how_many; |
505 | args.low = low; | |
506 | args.high = high; | |
507 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
508 | { | |
509 | gdb_disassembly_stub (&args); | |
510 | } | |
465f42bb JB |
511 | /* If an exception was thrown while doing the disassembly, print |
512 | the error message, to give the user a clue of what happened. */ | |
513 | if (exception.reason == RETURN_ERROR) | |
514 | exception_print (gdb_stderr, exception); | |
30c33a9f HZ |
515 | } |
516 | ||
033a42c2 MK |
517 | /* Print information about frame FRAME. The output is format according |
518 | to PRINT_LEVEL and PRINT_WHAT and PRINT ARGS. The meaning of | |
519 | PRINT_WHAT is: | |
520 | ||
521 | SRC_LINE: Print only source line. | |
522 | LOCATION: Print only location. | |
523 | LOC_AND_SRC: Print location and source line. | |
524 | ||
525 | Used in "where" output, and to emit breakpoint or step | |
526 | messages. */ | |
c906108c | 527 | |
7789c6f5 | 528 | void |
033a42c2 | 529 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 530 | enum print_what print_what, int print_args) |
c906108c | 531 | { |
5af949e3 | 532 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 533 | struct symtab_and_line sal; |
c5394b80 JM |
534 | int source_print; |
535 | int location_print; | |
c906108c | 536 | |
033a42c2 | 537 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
538 | || get_frame_type (frame) == SIGTRAMP_FRAME |
539 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 540 | { |
075559bc AC |
541 | struct cleanup *uiout_cleanup |
542 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 543 | |
033a42c2 | 544 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 545 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 546 | |
c906108c | 547 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 548 | to list for this frame. */ |
0faf0076 | 549 | if (print_level) |
52c6a6ac JJ |
550 | { |
551 | ui_out_text (uiout, "#"); | |
0faf0076 | 552 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 553 | frame_relative_level (frame)); |
52c6a6ac | 554 | } |
075559bc | 555 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 556 | { |
075559bc | 557 | annotate_frame_address (); |
5af949e3 UW |
558 | ui_out_field_core_addr (uiout, "addr", |
559 | gdbarch, get_frame_pc (frame)); | |
075559bc | 560 | annotate_frame_address_end (); |
52c6a6ac | 561 | } |
6a3fe0a4 | 562 | |
033a42c2 | 563 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
564 | { |
565 | annotate_function_call (); | |
566 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
567 | } | |
033a42c2 | 568 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
569 | { |
570 | annotate_signal_handler_caller (); | |
571 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
572 | } | |
36f15f55 UW |
573 | else if (get_frame_type (frame) == ARCH_FRAME) |
574 | { | |
575 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
576 | } | |
075559bc | 577 | ui_out_text (uiout, "\n"); |
c906108c | 578 | annotate_frame_end (); |
075559bc AC |
579 | |
580 | do_cleanups (uiout_cleanup); | |
c906108c SS |
581 | return; |
582 | } | |
583 | ||
033a42c2 MK |
584 | /* If FRAME is not the innermost frame, that normally means that |
585 | FRAME->pc points to *after* the call instruction, and we want to | |
586 | get the line containing the call, never the next line. But if | |
587 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
588 | next frame was not entered as the result of a call, and we want | |
589 | to get the line containing FRAME->pc. */ | |
590 | find_frame_sal (frame, &sal); | |
c906108c | 591 | |
0faf0076 AC |
592 | location_print = (print_what == LOCATION |
593 | || print_what == LOC_AND_ADDRESS | |
594 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
595 | |
596 | if (location_print || !sal.symtab) | |
033a42c2 | 597 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 598 | |
0faf0076 | 599 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 600 | |
30c33a9f HZ |
601 | /* If disassemble-next-line is set to auto or on and doesn't have |
602 | the line debug messages for $pc, output the next instruction. */ | |
603 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
604 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
605 | && source_print && !sal.symtab) | |
13274fc3 UW |
606 | do_gdb_disassembly (get_frame_arch (frame), 1, |
607 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 608 | |
c5394b80 JM |
609 | if (source_print && sal.symtab) |
610 | { | |
611 | int done = 0; | |
0faf0076 | 612 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 613 | && frame_show_address (frame, sal)); |
c5394b80 JM |
614 | |
615 | if (annotation_level) | |
616 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 617 | get_frame_pc (frame)); |
c5394b80 JM |
618 | if (!done) |
619 | { | |
9a4105ab | 620 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
621 | deprecated_print_frame_info_listing_hook (sal.symtab, |
622 | sal.line, | |
623 | sal.line + 1, 0); | |
ba4bbdcb | 624 | else |
c5394b80 | 625 | { |
79a45b7d TT |
626 | struct value_print_options opts; |
627 | get_user_print_options (&opts); | |
ba4bbdcb KS |
628 | /* We used to do this earlier, but that is clearly |
629 | wrong. This function is used by many different | |
630 | parts of gdb, including normal_stop in infrun.c, | |
631 | which uses this to print out the current PC | |
632 | when we stepi/nexti into the middle of a source | |
633 | line. Only the command line really wants this | |
634 | behavior. Other UIs probably would like the | |
cbd3c883 | 635 | ability to decide for themselves if it is desired. */ |
79a45b7d | 636 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 637 | { |
5af949e3 UW |
638 | ui_out_field_core_addr (uiout, "addr", |
639 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 640 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
641 | } |
642 | ||
643 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 644 | } |
c5394b80 | 645 | } |
30c33a9f HZ |
646 | |
647 | /* If disassemble-next-line is set to on and there is line debug | |
648 | messages, output assembly codes for next line. */ | |
649 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 650 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
651 | } |
652 | ||
0faf0076 | 653 | if (print_what != LOCATION) |
6c95b8df PA |
654 | set_default_breakpoint (1, sal.pspace, |
655 | get_frame_pc (frame), sal.symtab, sal.line); | |
c5394b80 JM |
656 | |
657 | annotate_frame_end (); | |
658 | ||
659 | gdb_flush (gdb_stdout); | |
660 | } | |
661 | ||
f8f6f20b TJB |
662 | /* Attempt to obtain the FUNNAME and FUNLANG of the function corresponding |
663 | to FRAME. */ | |
664 | void | |
665 | find_frame_funname (struct frame_info *frame, char **funname, | |
666 | enum language *funlang) | |
c5394b80 JM |
667 | { |
668 | struct symbol *func; | |
8b93c638 | 669 | |
f8f6f20b TJB |
670 | *funname = NULL; |
671 | *funlang = language_unknown; | |
c5394b80 | 672 | |
edb3359d | 673 | func = get_frame_function (frame); |
c906108c SS |
674 | if (func) |
675 | { | |
676 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
677 | function (when we are in the first function in a file which |
678 | is compiled without debugging symbols, the previous function | |
679 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
680 | that is supposed to tell us where the file with debugging |
681 | symbols ends has been truncated by ar because it is longer | |
682 | than 15 characters). This also occurs if the user uses asm() | |
683 | to create a function but not stabs for it (in a file compiled | |
684 | with -g). | |
c5aa993b JM |
685 | |
686 | So look in the minimal symbol tables as well, and if it comes | |
687 | up with a larger address for the function use that instead. | |
033a42c2 MK |
688 | I don't think this can ever cause any problems; there |
689 | shouldn't be any minimal symbols in the middle of a function; | |
690 | if this is ever changed many parts of GDB will need to be | |
691 | changed (and we'll create a find_pc_minimal_function or some | |
692 | such). */ | |
693 | ||
edb3359d DJ |
694 | struct minimal_symbol *msymbol = NULL; |
695 | ||
696 | /* Don't attempt to do this for inlined functions, which do not | |
697 | have a corresponding minimal symbol. */ | |
698 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
699 | msymbol | |
700 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 701 | |
c906108c | 702 | if (msymbol != NULL |
c5aa993b | 703 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
704 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
705 | { | |
c906108c SS |
706 | /* We also don't know anything about the function besides |
707 | its address and name. */ | |
708 | func = 0; | |
f8f6f20b TJB |
709 | *funname = SYMBOL_PRINT_NAME (msymbol); |
710 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
711 | } |
712 | else | |
713 | { | |
f8f6f20b TJB |
714 | *funname = SYMBOL_PRINT_NAME (func); |
715 | *funlang = SYMBOL_LANGUAGE (func); | |
716 | if (*funlang == language_cplus) | |
c5aa993b | 717 | { |
033a42c2 MK |
718 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
719 | to display the demangled name that we already have | |
720 | stored in the symbol table, but we stored a version | |
721 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 722 | display parameters. So remove the parameters. */ |
f8f6f20b | 723 | char *func_only = cp_remove_params (*funname); |
3567439c DJ |
724 | if (func_only) |
725 | { | |
f8f6f20b | 726 | *funname = func_only; |
3567439c DJ |
727 | make_cleanup (xfree, func_only); |
728 | } | |
c5aa993b | 729 | } |
c906108c SS |
730 | } |
731 | } | |
732 | else | |
733 | { | |
033a42c2 MK |
734 | struct minimal_symbol *msymbol = |
735 | lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
736 | ||
c906108c SS |
737 | if (msymbol != NULL) |
738 | { | |
f8f6f20b TJB |
739 | *funname = SYMBOL_PRINT_NAME (msymbol); |
740 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
741 | } |
742 | } | |
f8f6f20b TJB |
743 | } |
744 | ||
745 | static void | |
746 | print_frame (struct frame_info *frame, int print_level, | |
747 | enum print_what print_what, int print_args, | |
748 | struct symtab_and_line sal) | |
749 | { | |
5af949e3 | 750 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f8f6f20b TJB |
751 | char *funname = NULL; |
752 | enum language funlang = language_unknown; | |
753 | struct ui_stream *stb; | |
754 | struct cleanup *old_chain, *list_chain; | |
755 | struct value_print_options opts; | |
756 | ||
757 | stb = ui_out_stream_new (uiout); | |
758 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
759 | ||
760 | find_frame_funname (frame, &funname, &funlang); | |
c906108c | 761 | |
033a42c2 | 762 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 763 | gdbarch, get_frame_pc (frame)); |
c5394b80 | 764 | |
666547aa | 765 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 766 | |
0faf0076 | 767 | if (print_level) |
8b93c638 | 768 | { |
8b93c638 | 769 | ui_out_text (uiout, "#"); |
0faf0076 | 770 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 771 | frame_relative_level (frame)); |
8b93c638 | 772 | } |
79a45b7d TT |
773 | get_user_print_options (&opts); |
774 | if (opts.addressprint) | |
edb3359d | 775 | if (frame_show_address (frame, sal) || !sal.symtab |
0faf0076 | 776 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
777 | { |
778 | annotate_frame_address (); | |
5af949e3 | 779 | ui_out_field_core_addr (uiout, "addr", gdbarch, get_frame_pc (frame)); |
8b93c638 JM |
780 | annotate_frame_address_end (); |
781 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
782 | } |
783 | annotate_frame_function_name (); | |
033a42c2 MK |
784 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
785 | funlang, DMGL_ANSI); | |
8b93c638 JM |
786 | ui_out_field_stream (uiout, "func", stb); |
787 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
788 | annotate_frame_args (); |
789 | ||
8b93c638 | 790 | ui_out_text (uiout, " ("); |
0faf0076 | 791 | if (print_args) |
c906108c | 792 | { |
c5394b80 | 793 | struct print_args_args args; |
d493eb33 | 794 | struct cleanup *args_list_chain; |
033a42c2 | 795 | args.frame = frame; |
f8f6f20b | 796 | args.func = find_pc_function (get_frame_address_in_block (frame)); |
c5394b80 | 797 | args.stream = gdb_stdout; |
68c81b54 | 798 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
5c3ce3f7 | 799 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ERROR); |
033a42c2 MK |
800 | /* FIXME: ARGS must be a list. If one argument is a string it |
801 | will have " that will not be properly escaped. */ | |
666547aa | 802 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 803 | do_cleanups (args_list_chain); |
c5394b80 JM |
804 | QUIT; |
805 | } | |
8b93c638 | 806 | ui_out_text (uiout, ")"); |
c5394b80 JM |
807 | if (sal.symtab && sal.symtab->filename) |
808 | { | |
809 | annotate_frame_source_begin (); | |
8b93c638 JM |
810 | ui_out_wrap_hint (uiout, " "); |
811 | ui_out_text (uiout, " at "); | |
812 | annotate_frame_source_file (); | |
813 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
814 | if (ui_out_is_mi_like_p (uiout)) |
815 | { | |
816 | const char *fullname = symtab_to_fullname (sal.symtab); | |
817 | if (fullname != NULL) | |
818 | ui_out_field_string (uiout, "fullname", fullname); | |
819 | } | |
8b93c638 JM |
820 | annotate_frame_source_file_end (); |
821 | ui_out_text (uiout, ":"); | |
822 | annotate_frame_source_line (); | |
823 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
824 | annotate_frame_source_end (); |
825 | } | |
c906108c | 826 | |
c5394b80 | 827 | if (!funname || (!sal.symtab || !sal.symtab->filename)) |
c906108c | 828 | { |
a77053c2 | 829 | #ifdef PC_SOLIB |
033a42c2 | 830 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 831 | #else |
6c95b8df PA |
832 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
833 | get_frame_pc (frame)); | |
a77053c2 | 834 | #endif |
c5394b80 | 835 | if (lib) |
c906108c | 836 | { |
c5394b80 | 837 | annotate_frame_where (); |
8b93c638 JM |
838 | ui_out_wrap_hint (uiout, " "); |
839 | ui_out_text (uiout, " from "); | |
840 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 841 | } |
c906108c | 842 | } |
e514a9d6 | 843 | |
666547aa | 844 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 845 | do_cleanups (list_chain); |
8b93c638 JM |
846 | ui_out_text (uiout, "\n"); |
847 | do_cleanups (old_chain); | |
c906108c SS |
848 | } |
849 | \f | |
c5aa993b | 850 | |
033a42c2 MK |
851 | /* Read a frame specification in whatever the appropriate format is |
852 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
853 | specification is in any way invalid (so this function never returns | |
854 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
855 | the default selected frame was used. */ | |
c906108c | 856 | |
1c8831c5 AC |
857 | static struct frame_info * |
858 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
859 | int *selected_frame_p) | |
c906108c | 860 | { |
1c8831c5 AC |
861 | int numargs; |
862 | struct value *args[4]; | |
863 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 864 | |
1c8831c5 AC |
865 | if (frame_exp == NULL) |
866 | numargs = 0; | |
867 | else | |
c906108c | 868 | { |
1c8831c5 AC |
869 | numargs = 0; |
870 | while (1) | |
c906108c | 871 | { |
1c8831c5 AC |
872 | char *addr_string; |
873 | struct cleanup *cleanup; | |
874 | const char *p; | |
875 | ||
876 | /* Skip leading white space, bail of EOL. */ | |
877 | while (isspace (*frame_exp)) | |
878 | frame_exp++; | |
879 | if (!*frame_exp) | |
880 | break; | |
c906108c | 881 | |
1c8831c5 AC |
882 | /* Parse the argument, extract it, save it. */ |
883 | for (p = frame_exp; | |
884 | *p && !isspace (*p); | |
885 | p++); | |
886 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 887 | frame_exp = p; |
1c8831c5 AC |
888 | cleanup = make_cleanup (xfree, addr_string); |
889 | ||
890 | /* NOTE: Parse and evaluate expression, but do not use | |
891 | functions such as parse_and_eval_long or | |
892 | parse_and_eval_address to also extract the value. | |
893 | Instead value_as_long and value_as_address are used. | |
894 | This avoids problems with expressions that contain | |
895 | side-effects. */ | |
896 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 897 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
898 | args[numargs++] = parse_and_eval (addr_string); |
899 | ||
900 | do_cleanups (cleanup); | |
c906108c SS |
901 | } |
902 | } | |
903 | ||
1c8831c5 AC |
904 | /* If no args, default to the selected frame. */ |
905 | if (numargs == 0) | |
c906108c | 906 | { |
1c8831c5 AC |
907 | if (selected_frame_p != NULL) |
908 | (*selected_frame_p) = 1; | |
909 | return get_selected_frame (message); | |
910 | } | |
c906108c | 911 | |
1c8831c5 AC |
912 | /* None of the remaining use the selected frame. */ |
913 | if (selected_frame_p != NULL) | |
98f276a0 | 914 | (*selected_frame_p) = 0; |
c906108c | 915 | |
1c8831c5 AC |
916 | /* Assume the single arg[0] is an integer, and try using that to |
917 | select a frame relative to current. */ | |
918 | if (numargs == 1) | |
919 | { | |
920 | struct frame_info *fid; | |
921 | int level = value_as_long (args[0]); | |
922 | fid = find_relative_frame (get_current_frame (), &level); | |
923 | if (level == 0) | |
924 | /* find_relative_frame was successful */ | |
925 | return fid; | |
926 | } | |
c906108c | 927 | |
1c8831c5 AC |
928 | /* Convert each value into a corresponding address. */ |
929 | { | |
930 | int i; | |
931 | for (i = 0; i < numargs; i++) | |
1e275f79 | 932 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 933 | } |
c5aa993b | 934 | |
1c8831c5 AC |
935 | /* Assume that the single arg[0] is an address, use that to identify |
936 | a frame with a matching ID. Should this also accept stack/pc or | |
937 | stack/pc/special. */ | |
938 | if (numargs == 1) | |
939 | { | |
940 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
941 | struct frame_info *fid; | |
942 | ||
1c8831c5 AC |
943 | /* If (s)he specifies the frame with an address, he deserves |
944 | what (s)he gets. Still, give the highest one that matches. | |
945 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
946 | know). */ | |
947 | for (fid = get_current_frame (); | |
948 | fid != NULL; | |
949 | fid = get_prev_frame (fid)) | |
950 | { | |
951 | if (frame_id_eq (id, get_frame_id (fid))) | |
952 | { | |
c7ce8faa DJ |
953 | struct frame_info *prev_frame; |
954 | ||
955 | while (1) | |
956 | { | |
957 | prev_frame = get_prev_frame (fid); | |
958 | if (!prev_frame | |
959 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
960 | break; | |
961 | fid = prev_frame; | |
962 | } | |
1c8831c5 AC |
963 | return fid; |
964 | } | |
965 | } | |
c906108c SS |
966 | } |
967 | ||
1c8831c5 AC |
968 | /* We couldn't identify the frame as an existing frame, but |
969 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
970 | if (numargs == 1) |
971 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
972 | else if (numargs == 2) |
973 | return create_new_frame (addrs[0], addrs[1]); | |
974 | else | |
8a3fe4f8 | 975 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
976 | } |
977 | ||
9c833c82 | 978 | static struct frame_info * |
1c8831c5 AC |
979 | parse_frame_specification (char *frame_exp) |
980 | { | |
981 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
982 | } |
983 | ||
033a42c2 MK |
984 | /* Print verbosely the selected frame or the frame at address |
985 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
986 | |
987 | static void | |
fba45db2 | 988 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
989 | { |
990 | struct frame_info *fi; | |
991 | struct symtab_and_line sal; | |
992 | struct symbol *func; | |
993 | struct symtab *s; | |
994 | struct frame_info *calling_frame_info; | |
167e4384 | 995 | int numregs; |
c906108c SS |
996 | char *funname = 0; |
997 | enum language funlang = language_unknown; | |
82de1e5b | 998 | const char *pc_regname; |
1c8831c5 | 999 | int selected_frame_p; |
7500260a | 1000 | struct gdbarch *gdbarch; |
3567439c | 1001 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
c906108c | 1002 | |
1c8831c5 | 1003 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1004 | gdbarch = get_frame_arch (fi); |
c906108c | 1005 | |
82de1e5b AC |
1006 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1007 | is not a good name. */ | |
12368003 | 1008 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1009 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1010 | easily not match that of the internal value returned by |
1011 | get_frame_pc(). */ | |
12368003 | 1012 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1013 | else |
3e8c568d | 1014 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1015 | architectures will often have a hardware register called "pc", |
1016 | and that register's value, again, can easily not match | |
1017 | get_frame_pc(). */ | |
1018 | pc_regname = "pc"; | |
1019 | ||
1058bca7 | 1020 | find_frame_sal (fi, &sal); |
c906108c | 1021 | func = get_frame_function (fi); |
1058bca7 | 1022 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
033a42c2 | 1023 | the same value? */ |
bdd78e62 | 1024 | s = find_pc_symtab (get_frame_pc (fi)); |
c906108c SS |
1025 | if (func) |
1026 | { | |
3567439c | 1027 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1028 | funlang = SYMBOL_LANGUAGE (func); |
1029 | if (funlang == language_cplus) | |
1030 | { | |
3567439c DJ |
1031 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1032 | to display the demangled name that we already have | |
1033 | stored in the symbol table, but we stored a version | |
1034 | with DMGL_PARAMS turned on, and here we don't want to | |
1035 | display parameters. So remove the parameters. */ | |
1036 | char *func_only = cp_remove_params (funname); | |
1037 | if (func_only) | |
1038 | { | |
1039 | funname = func_only; | |
1040 | make_cleanup (xfree, func_only); | |
1041 | } | |
c5aa993b | 1042 | } |
c906108c SS |
1043 | } |
1044 | else | |
1045 | { | |
033a42c2 MK |
1046 | struct minimal_symbol *msymbol; |
1047 | ||
1048 | msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi)); | |
c906108c SS |
1049 | if (msymbol != NULL) |
1050 | { | |
3567439c | 1051 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1052 | funlang = SYMBOL_LANGUAGE (msymbol); |
1053 | } | |
1054 | } | |
1055 | calling_frame_info = get_prev_frame (fi); | |
1056 | ||
1c8831c5 | 1057 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1058 | { |
a3f17187 | 1059 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1060 | frame_relative_level (fi)); |
c906108c SS |
1061 | } |
1062 | else | |
1063 | { | |
a3f17187 | 1064 | printf_filtered (_("Stack frame at ")); |
c906108c | 1065 | } |
5af949e3 | 1066 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1067 | printf_filtered (":\n"); |
82de1e5b | 1068 | printf_filtered (" %s = ", pc_regname); |
5af949e3 | 1069 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); |
c906108c SS |
1070 | |
1071 | wrap_here (" "); | |
1072 | if (funname) | |
1073 | { | |
1074 | printf_filtered (" in "); | |
1075 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1076 | DMGL_ANSI | DMGL_PARAMS); | |
1077 | } | |
1078 | wrap_here (" "); | |
1079 | if (sal.symtab) | |
1080 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1081 | puts_filtered ("; "); | |
1082 | wrap_here (" "); | |
82de1e5b | 1083 | printf_filtered ("saved %s ", pc_regname); |
5af949e3 | 1084 | fputs_filtered (paddress (gdbarch, frame_unwind_caller_pc (fi)), gdb_stdout); |
c906108c SS |
1085 | printf_filtered ("\n"); |
1086 | ||
55feb689 DJ |
1087 | if (calling_frame_info == NULL) |
1088 | { | |
1089 | enum unwind_stop_reason reason; | |
1090 | ||
1091 | reason = get_frame_unwind_stop_reason (fi); | |
1092 | if (reason != UNWIND_NO_REASON) | |
1093 | printf_filtered (_(" Outermost frame: %s\n"), | |
1094 | frame_stop_reason_string (reason)); | |
1095 | } | |
edb3359d DJ |
1096 | else if (get_frame_type (fi) == INLINE_FRAME) |
1097 | printf_filtered (" inlined into frame %d", | |
1098 | frame_relative_level (get_prev_frame (fi))); | |
1099 | else | |
c906108c SS |
1100 | { |
1101 | printf_filtered (" called by frame at "); | |
5af949e3 | 1102 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1103 | gdb_stdout); |
c906108c | 1104 | } |
75e3c1f9 | 1105 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1106 | puts_filtered (","); |
1107 | wrap_here (" "); | |
75e3c1f9 | 1108 | if (get_next_frame (fi)) |
c906108c SS |
1109 | { |
1110 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1111 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1112 | gdb_stdout); |
c906108c | 1113 | } |
75e3c1f9 | 1114 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1115 | puts_filtered ("\n"); |
55feb689 | 1116 | |
c906108c | 1117 | if (s) |
1058bca7 AC |
1118 | printf_filtered (" source language %s.\n", |
1119 | language_str (s->language)); | |
c906108c | 1120 | |
c906108c SS |
1121 | { |
1122 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1123 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1124 | /* Number of args for this frame, or -1 if unknown. */ |
1125 | int numargs; | |
1126 | ||
1127 | if (arg_list == 0) | |
1128 | printf_filtered (" Arglist at unknown address.\n"); | |
1129 | else | |
1130 | { | |
1131 | printf_filtered (" Arglist at "); | |
5af949e3 | 1132 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1133 | printf_filtered (","); |
1134 | ||
7500260a | 1135 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1136 | { |
1137 | numargs = -1; | |
1138 | puts_filtered (" args: "); | |
1139 | } | |
c906108c | 1140 | else |
983a287a | 1141 | { |
7500260a | 1142 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1143 | gdb_assert (numargs >= 0); |
1144 | if (numargs == 0) | |
1145 | puts_filtered (" no args."); | |
1146 | else if (numargs == 1) | |
1147 | puts_filtered (" 1 arg: "); | |
1148 | else | |
1149 | printf_filtered (" %d args: ", numargs); | |
1150 | } | |
c906108c SS |
1151 | print_frame_args (func, fi, numargs, gdb_stdout); |
1152 | puts_filtered ("\n"); | |
1153 | } | |
1154 | } | |
1155 | { | |
1156 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1157 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1158 | |
1159 | if (arg_list == 0) | |
1160 | printf_filtered (" Locals at unknown address,"); | |
1161 | else | |
1162 | { | |
1163 | printf_filtered (" Locals at "); | |
5af949e3 | 1164 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1165 | printf_filtered (","); |
1166 | } | |
1167 | } | |
1168 | ||
4f460812 AC |
1169 | /* Print as much information as possible on the location of all the |
1170 | registers. */ | |
1171 | { | |
1172 | enum lval_type lval; | |
1173 | int optimized; | |
1174 | CORE_ADDR addr; | |
1175 | int realnum; | |
1176 | int count; | |
1177 | int i; | |
1178 | int need_nl = 1; | |
1179 | ||
1180 | /* The sp is special; what's displayed isn't the save address, but | |
1181 | the value of the previous frame's sp. This is a legacy thing, | |
1182 | at one stage the frame cached the previous frame's SP instead | |
1183 | of its address, hence it was easiest to just display the cached | |
1184 | value. */ | |
7500260a | 1185 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1186 | { |
1187 | /* Find out the location of the saved stack pointer with out | |
1188 | actually evaluating it. */ | |
7500260a | 1189 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1190 | &optimized, &lval, &addr, |
4f460812 AC |
1191 | &realnum, NULL); |
1192 | if (!optimized && lval == not_lval) | |
c906108c | 1193 | { |
e17a4113 UW |
1194 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1195 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1196 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1197 | CORE_ADDR sp; |
7500260a | 1198 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1199 | &optimized, &lval, &addr, |
4f460812 | 1200 | &realnum, value); |
af1342ab AC |
1201 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1202 | stack pointer was packed as an unsigned integer. That | |
1203 | may or may not be valid. */ | |
e17a4113 | 1204 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1205 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1206 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1207 | printf_filtered ("\n"); |
1208 | need_nl = 0; | |
c906108c | 1209 | } |
4f460812 AC |
1210 | else if (!optimized && lval == lval_memory) |
1211 | { | |
1212 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1213 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1214 | printf_filtered ("\n"); |
1215 | need_nl = 0; | |
1216 | } | |
1217 | else if (!optimized && lval == lval_register) | |
1218 | { | |
1219 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1220 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1221 | need_nl = 0; |
1222 | } | |
1223 | /* else keep quiet. */ | |
1224 | } | |
1225 | ||
1226 | count = 0; | |
7500260a UW |
1227 | numregs = gdbarch_num_regs (gdbarch) |
1228 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1229 | for (i = 0; i < numregs; i++) |
7500260a UW |
1230 | if (i != gdbarch_sp_regnum (gdbarch) |
1231 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1232 | { |
1233 | /* Find out the location of the saved register without | |
1234 | fetching the corresponding value. */ | |
1235 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
1236 | NULL); | |
1237 | /* For moment, only display registers that were saved on the | |
1238 | stack. */ | |
1239 | if (!optimized && lval == lval_memory) | |
1240 | { | |
1241 | if (count == 0) | |
1242 | puts_filtered (" Saved registers:\n "); | |
1243 | else | |
1244 | puts_filtered (","); | |
1245 | wrap_here (" "); | |
c9f4d572 | 1246 | printf_filtered (" %s at ", |
7500260a | 1247 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1248 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1249 | count++; |
1250 | } | |
1251 | } | |
1252 | if (count || need_nl) | |
c906108c | 1253 | puts_filtered ("\n"); |
4f460812 | 1254 | } |
3567439c DJ |
1255 | |
1256 | do_cleanups (back_to); | |
c906108c SS |
1257 | } |
1258 | ||
033a42c2 MK |
1259 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1260 | frames. */ | |
c906108c SS |
1261 | |
1262 | static void | |
fba45db2 | 1263 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1264 | { |
1265 | struct frame_info *fi; | |
52f0bd74 AC |
1266 | int count; |
1267 | int i; | |
1268 | struct frame_info *trailing; | |
1269 | int trailing_level; | |
c906108c SS |
1270 | |
1271 | if (!target_has_stack) | |
8a3fe4f8 | 1272 | error (_("No stack.")); |
c906108c | 1273 | |
033a42c2 MK |
1274 | /* The following code must do two things. First, it must set the |
1275 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1276 | printing. Second, it must set the variable count to the number |
1277 | of frames which we should print, or -1 if all of them. */ | |
1278 | trailing = get_current_frame (); | |
d082b2bb | 1279 | |
c906108c SS |
1280 | trailing_level = 0; |
1281 | if (count_exp) | |
1282 | { | |
bb518678 | 1283 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1284 | if (count < 0) |
1285 | { | |
1286 | struct frame_info *current; | |
1287 | ||
1288 | count = -count; | |
1289 | ||
1290 | current = trailing; | |
1291 | while (current && count--) | |
1292 | { | |
1293 | QUIT; | |
1294 | current = get_prev_frame (current); | |
1295 | } | |
c5aa993b | 1296 | |
033a42c2 MK |
1297 | /* Will stop when CURRENT reaches the top of the stack. |
1298 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1299 | while (current) |
1300 | { | |
1301 | QUIT; | |
1302 | trailing = get_prev_frame (trailing); | |
1303 | current = get_prev_frame (current); | |
1304 | trailing_level++; | |
1305 | } | |
c5aa993b | 1306 | |
c906108c SS |
1307 | count = -1; |
1308 | } | |
1309 | } | |
1310 | else | |
1311 | count = -1; | |
1312 | ||
1313 | if (info_verbose) | |
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 | 1322 | { |
ccefe4c4 | 1323 | CORE_ADDR pc; |
c906108c | 1324 | QUIT; |
ccefe4c4 TT |
1325 | pc = get_frame_address_in_block (fi); |
1326 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
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; |
f89b749f | 1376 | |
d75e3c94 JJ |
1377 | backtrace_command_1 (args->count_exp, args->show_locals, args->from_tty); |
1378 | return 0; | |
1379 | } | |
1380 | ||
c906108c | 1381 | static void |
fba45db2 | 1382 | backtrace_command (char *arg, int from_tty) |
c906108c | 1383 | { |
033a42c2 MK |
1384 | struct cleanup *old_chain = NULL; |
1385 | int fulltrace_arg = -1, arglen = 0, argc = 0; | |
d75e3c94 | 1386 | struct backtrace_command_args btargs; |
c906108c | 1387 | |
033a42c2 | 1388 | if (arg) |
c906108c | 1389 | { |
033a42c2 | 1390 | char **argv; |
c906108c SS |
1391 | int i; |
1392 | ||
d1a41061 | 1393 | argv = gdb_buildargv (arg); |
7a292a7a | 1394 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1395 | argc = 0; |
033a42c2 | 1396 | for (i = 0; argv[i]; i++) |
c5aa993b | 1397 | { |
745b8ca0 | 1398 | unsigned int j; |
c5aa993b | 1399 | |
033a42c2 | 1400 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1401 | argv[i][j] = tolower (argv[i][j]); |
1402 | ||
033a42c2 MK |
1403 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1404 | fulltrace_arg = argc; | |
c5aa993b JM |
1405 | else |
1406 | { | |
033a42c2 | 1407 | arglen += strlen (argv[i]); |
c5aa993b | 1408 | argc++; |
c5aa993b JM |
1409 | } |
1410 | } | |
033a42c2 MK |
1411 | arglen += argc; |
1412 | if (fulltrace_arg >= 0) | |
c5aa993b | 1413 | { |
033a42c2 | 1414 | if (arglen > 0) |
c5aa993b | 1415 | { |
033a42c2 MK |
1416 | arg = xmalloc (arglen + 1); |
1417 | memset (arg, 0, arglen + 1); | |
1418 | for (i = 0; i < (argc + 1); i++) | |
c5aa993b | 1419 | { |
033a42c2 | 1420 | if (i != fulltrace_arg) |
c5aa993b | 1421 | { |
033a42c2 MK |
1422 | strcat (arg, argv[i]); |
1423 | strcat (arg, " "); | |
c5aa993b JM |
1424 | } |
1425 | } | |
1426 | } | |
1427 | else | |
033a42c2 | 1428 | arg = NULL; |
c5aa993b | 1429 | } |
c906108c SS |
1430 | } |
1431 | ||
033a42c2 MK |
1432 | btargs.count_exp = arg; |
1433 | btargs.show_locals = (fulltrace_arg >= 0); | |
d75e3c94 | 1434 | btargs.from_tty = from_tty; |
033a42c2 | 1435 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1436 | |
033a42c2 MK |
1437 | if (fulltrace_arg >= 0 && arglen > 0) |
1438 | xfree (arg); | |
c906108c SS |
1439 | |
1440 | if (old_chain) | |
c5aa993b | 1441 | do_cleanups (old_chain); |
c906108c SS |
1442 | } |
1443 | ||
1444 | static void | |
fba45db2 | 1445 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1446 | { |
d75e3c94 | 1447 | struct backtrace_command_args btargs; |
f89b749f | 1448 | |
d75e3c94 JJ |
1449 | btargs.count_exp = arg; |
1450 | btargs.show_locals = 1; | |
1451 | btargs.from_tty = from_tty; | |
033a42c2 | 1452 | catch_errors (backtrace_command_stub, &btargs, "", RETURN_MASK_ERROR); |
c906108c | 1453 | } |
c906108c | 1454 | \f |
c5aa993b | 1455 | |
2c58c0a9 PA |
1456 | /* Iterate over the local variables of a block B, calling CB with |
1457 | CB_DATA. */ | |
c906108c | 1458 | |
2c58c0a9 PA |
1459 | static void |
1460 | iterate_over_block_locals (struct block *b, | |
1461 | iterate_over_block_arg_local_vars_cb cb, | |
1462 | void *cb_data) | |
c906108c | 1463 | { |
de4f826b | 1464 | struct dict_iterator iter; |
de4f826b | 1465 | struct symbol *sym; |
c906108c | 1466 | |
de4f826b | 1467 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1468 | { |
c906108c SS |
1469 | switch (SYMBOL_CLASS (sym)) |
1470 | { | |
1471 | case LOC_LOCAL: | |
1472 | case LOC_REGISTER: | |
1473 | case LOC_STATIC: | |
4c2df51b | 1474 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1475 | if (SYMBOL_IS_ARGUMENT (sym)) |
1476 | break; | |
2c58c0a9 | 1477 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1478 | break; |
1479 | ||
1480 | default: | |
1481 | /* Ignore symbols which are not locals. */ | |
1482 | break; | |
1483 | } | |
1484 | } | |
c906108c SS |
1485 | } |
1486 | ||
65c06092 | 1487 | |
c906108c SS |
1488 | /* Same, but print labels. */ |
1489 | ||
65c06092 JB |
1490 | #if 0 |
1491 | /* Commented out, as the code using this function has also been | |
1492 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1493 | was commented out in the first place. The discussion introducing | |
1494 | this change (2007-12-04: Support lexical blocks and function bodies | |
1495 | that occupy non-contiguous address ranges) did not explain why | |
1496 | this change was made. */ | |
c906108c | 1497 | static int |
5af949e3 UW |
1498 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1499 | int *have_default, struct ui_file *stream) | |
c906108c | 1500 | { |
de4f826b | 1501 | struct dict_iterator iter; |
52f0bd74 AC |
1502 | struct symbol *sym; |
1503 | int values_printed = 0; | |
c906108c | 1504 | |
de4f826b | 1505 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1506 | { |
3567439c | 1507 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1508 | { |
1509 | if (*have_default) | |
1510 | continue; | |
1511 | *have_default = 1; | |
1512 | } | |
1513 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1514 | { | |
1515 | struct symtab_and_line sal; | |
79a45b7d | 1516 | struct value_print_options opts; |
c906108c SS |
1517 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1518 | values_printed = 1; | |
de5ad195 | 1519 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1520 | get_user_print_options (&opts); |
1521 | if (opts.addressprint) | |
c906108c SS |
1522 | { |
1523 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1524 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1525 | stream); | |
c906108c SS |
1526 | } |
1527 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1528 | sal.symtab->filename, sal.line); | |
1529 | } | |
1530 | } | |
033a42c2 | 1531 | |
c906108c SS |
1532 | return values_printed; |
1533 | } | |
65c06092 | 1534 | #endif |
c906108c | 1535 | |
2c58c0a9 PA |
1536 | /* Iterate over all the local variables in block B, including all its |
1537 | superblocks, stopping when the top-level block is reached. */ | |
1538 | ||
1539 | void | |
1540 | iterate_over_block_local_vars (struct block *block, | |
1541 | iterate_over_block_arg_local_vars_cb cb, | |
1542 | void *cb_data) | |
1543 | { | |
1544 | while (block) | |
1545 | { | |
1546 | iterate_over_block_locals (block, cb, cb_data); | |
1547 | /* After handling the function's top-level block, stop. Don't | |
1548 | continue to its superblock, the block of per-file | |
1549 | symbols. */ | |
1550 | if (BLOCK_FUNCTION (block)) | |
1551 | break; | |
1552 | block = BLOCK_SUPERBLOCK (block); | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | /* Data to be passed around in the calls to the locals and args | |
1557 | iterators. */ | |
c906108c | 1558 | |
2c58c0a9 PA |
1559 | struct print_variable_and_value_data |
1560 | { | |
1561 | struct frame_info *frame; | |
1562 | int num_tabs; | |
1563 | struct ui_file *stream; | |
1564 | int values_printed; | |
1565 | }; | |
1566 | ||
1567 | /* The callback for the locals and args iterators */ | |
1568 | ||
1569 | static void | |
1570 | do_print_variable_and_value (const char *print_name, | |
1571 | struct symbol *sym, | |
1572 | void *cb_data) | |
1573 | { | |
1574 | struct print_variable_and_value_data *p = cb_data; | |
1575 | ||
1576 | print_variable_and_value (print_name, sym, | |
1577 | p->frame, p->stream, p->num_tabs); | |
1578 | p->values_printed = 1; | |
1579 | } | |
c906108c SS |
1580 | |
1581 | static void | |
033a42c2 | 1582 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1583 | struct ui_file *stream) |
c906108c | 1584 | { |
2c58c0a9 PA |
1585 | struct print_variable_and_value_data cb_data; |
1586 | struct block *block; | |
c906108c | 1587 | |
2c58c0a9 | 1588 | block = get_frame_block (frame, 0); |
c906108c SS |
1589 | if (block == 0) |
1590 | { | |
1591 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1592 | return; | |
1593 | } | |
c5aa993b | 1594 | |
2c58c0a9 PA |
1595 | cb_data.frame = frame; |
1596 | cb_data.num_tabs = 4 * num_tabs; | |
1597 | cb_data.stream = stream; | |
1598 | cb_data.values_printed = 0; | |
1599 | ||
1600 | iterate_over_block_local_vars (block, | |
1601 | do_print_variable_and_value, | |
1602 | &cb_data); | |
c906108c | 1603 | |
2c58c0a9 | 1604 | if (!cb_data.values_printed) |
033a42c2 | 1605 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1606 | } |
1607 | ||
1608 | /* Same, but print labels. */ | |
1609 | ||
1610 | static void | |
033a42c2 | 1611 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1612 | struct ui_file *stream) |
c906108c | 1613 | { |
801e3a5b JB |
1614 | #if 1 |
1615 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1616 | #else | |
52f0bd74 | 1617 | struct blockvector *bl; |
033a42c2 | 1618 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1619 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1620 | int values_printed = 0; |
c906108c SS |
1621 | int index, have_default = 0; |
1622 | char *blocks_printed; | |
033a42c2 | 1623 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1624 | |
1625 | if (block == 0) | |
1626 | { | |
1627 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1628 | return; | |
1629 | } | |
1630 | ||
1631 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1632 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1633 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1634 | ||
1635 | while (block != 0) | |
1636 | { | |
1637 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1638 | int last_index; | |
1639 | ||
1640 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1641 | error (_("blockvector blotch")); |
c906108c | 1642 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1643 | error (_("blockvector botch")); |
c906108c SS |
1644 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1645 | index += 1; | |
1646 | ||
1647 | /* Don't print out blocks that have gone by. */ | |
1648 | while (index < last_index | |
1649 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1650 | index++; | |
1651 | ||
1652 | while (index < last_index | |
1653 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1654 | { | |
1655 | if (blocks_printed[index] == 0) | |
1656 | { | |
5af949e3 UW |
1657 | if (print_block_frame_labels (gdbarch, |
1658 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 1659 | &have_default, stream)) |
c906108c SS |
1660 | values_printed = 1; |
1661 | blocks_printed[index] = 1; | |
1662 | } | |
1663 | index++; | |
1664 | } | |
1665 | if (have_default) | |
1666 | return; | |
1667 | if (values_printed && this_level_only) | |
1668 | return; | |
1669 | ||
033a42c2 | 1670 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1671 | continue to its superblock, the block of per-file symbols. |
1672 | Also do not continue to the containing function of an inlined | |
1673 | function. */ | |
c906108c SS |
1674 | if (BLOCK_FUNCTION (block)) |
1675 | break; | |
1676 | block = BLOCK_SUPERBLOCK (block); | |
1677 | } | |
1678 | ||
1679 | if (!values_printed && !this_level_only) | |
033a42c2 | 1680 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1681 | #endif |
c906108c SS |
1682 | } |
1683 | ||
c906108c | 1684 | void |
fba45db2 | 1685 | locals_info (char *args, int from_tty) |
c906108c | 1686 | { |
033a42c2 | 1687 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1688 | 0, gdb_stdout); |
c906108c SS |
1689 | } |
1690 | ||
1691 | static void | |
fba45db2 | 1692 | catch_info (char *ignore, int from_tty) |
c906108c | 1693 | { |
dfdfb3ca JB |
1694 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1695 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1696 | 0, gdb_stdout); | |
c906108c SS |
1697 | } |
1698 | ||
2c58c0a9 PA |
1699 | /* Iterate over all the argument variables in block B. |
1700 | ||
1701 | Returns 1 if any argument was walked; 0 otherwise. */ | |
1702 | ||
1703 | void | |
1704 | iterate_over_block_arg_vars (struct block *b, | |
1705 | iterate_over_block_arg_local_vars_cb cb, | |
1706 | void *cb_data) | |
c906108c | 1707 | { |
de4f826b | 1708 | struct dict_iterator iter; |
52f0bd74 | 1709 | struct symbol *sym, *sym2; |
c906108c | 1710 | |
de4f826b | 1711 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1712 | { |
2a2d4dc3 AS |
1713 | /* Don't worry about things which aren't arguments. */ |
1714 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1715 | { |
c906108c SS |
1716 | /* We have to look up the symbol because arguments can have |
1717 | two entries (one a parameter, one a local) and the one we | |
1718 | want is the local, which lookup_symbol will find for us. | |
1719 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1720 | small structure and gcc2 when the argument type is float | |
1721 | and it is passed as a double and converted to float by | |
1722 | the prologue (in the latter case the type of the LOC_ARG | |
1723 | symbol is double and the type of the LOC_LOCAL symbol is | |
1724 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1725 | are not combined in symbol-reading. */ | |
1726 | ||
3567439c | 1727 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 1728 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 1729 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
1730 | } |
1731 | } | |
2c58c0a9 PA |
1732 | } |
1733 | ||
1734 | static void | |
1735 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
1736 | { | |
1737 | struct print_variable_and_value_data cb_data; | |
1738 | struct symbol *func; | |
1739 | ||
1740 | func = get_frame_function (frame); | |
1741 | if (func == NULL) | |
1742 | { | |
1743 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
1744 | return; | |
1745 | } | |
1746 | ||
1747 | cb_data.frame = frame; | |
1748 | cb_data.num_tabs = 0; | |
1749 | cb_data.stream = gdb_stdout; | |
1750 | cb_data.values_printed = 0; | |
1751 | ||
1752 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
1753 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 1754 | |
2c58c0a9 | 1755 | if (!cb_data.values_printed) |
033a42c2 | 1756 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1757 | } |
1758 | ||
1759 | void | |
fba45db2 | 1760 | args_info (char *ignore, int from_tty) |
c906108c | 1761 | { |
033a42c2 | 1762 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1763 | gdb_stdout); |
c906108c SS |
1764 | } |
1765 | ||
1766 | ||
1767 | static void | |
fba45db2 | 1768 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1769 | { |
c5aa993b JM |
1770 | args_info (ignore, from_tty); |
1771 | locals_info (ignore, from_tty); | |
c906108c | 1772 | } |
c906108c | 1773 | \f |
c5aa993b | 1774 | |
033a42c2 MK |
1775 | /* Select frame FRAME. Also print the stack frame and show the source |
1776 | if this is the tui version. */ | |
bedfa57b | 1777 | static void |
033a42c2 | 1778 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1779 | { |
033a42c2 MK |
1780 | select_frame (frame); |
1781 | if (frame) | |
1782 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1783 | } |
c906108c | 1784 | \f |
c906108c | 1785 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1786 | Can return zero under various legitimate circumstances. |
1787 | ||
1788 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1789 | code address within the block returned. We use this to decide | |
1790 | which macros are in scope. */ | |
c906108c SS |
1791 | |
1792 | struct block * | |
ae767bfb | 1793 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 1794 | { |
d729566a | 1795 | if (!has_stack_frames ()) |
8ea051c5 PA |
1796 | return 0; |
1797 | ||
206415a3 | 1798 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1799 | } |
1800 | ||
1801 | /* Find a frame a certain number of levels away from FRAME. | |
1802 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1803 | Positive means go to earlier frames (up); negative, the reverse. | |
1804 | The int that contains the number of levels is counted toward | |
1805 | zero as the frames for those levels are found. | |
1806 | If the top or bottom frame is reached, that frame is returned, | |
1807 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1808 | how much farther the original request asked to go. */ | |
1809 | ||
1810 | struct frame_info * | |
033a42c2 | 1811 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1812 | { |
033a42c2 MK |
1813 | /* Going up is simple: just call get_prev_frame enough times or |
1814 | until the initial frame is reached. */ | |
c906108c SS |
1815 | while (*level_offset_ptr > 0) |
1816 | { | |
033a42c2 MK |
1817 | struct frame_info *prev = get_prev_frame (frame); |
1818 | if (!prev) | |
c906108c SS |
1819 | break; |
1820 | (*level_offset_ptr)--; | |
1821 | frame = prev; | |
1822 | } | |
033a42c2 | 1823 | |
c906108c | 1824 | /* Going down is just as simple. */ |
033a42c2 | 1825 | while (*level_offset_ptr < 0) |
c906108c | 1826 | { |
033a42c2 MK |
1827 | struct frame_info *next = get_next_frame (frame); |
1828 | if (!next) | |
1829 | break; | |
1830 | (*level_offset_ptr)++; | |
1831 | frame = next; | |
c906108c | 1832 | } |
033a42c2 | 1833 | |
c906108c SS |
1834 | return frame; |
1835 | } | |
1836 | ||
033a42c2 MK |
1837 | /* The "select_frame" command. With no argument this is a NOP. |
1838 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1839 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1840 | ||
1841 | See parse_frame_specification for more info on proper frame | |
1842 | expressions. */ | |
c906108c | 1843 | |
8b93c638 | 1844 | void |
fba45db2 | 1845 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1846 | { |
1c8831c5 | 1847 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1848 | } |
1849 | ||
033a42c2 MK |
1850 | /* The "frame" command. With no argument, print the selected frame |
1851 | briefly. With an argument, behave like select_frame and then print | |
1852 | the selected frame. */ | |
c906108c | 1853 | |
033a42c2 | 1854 | static void |
fba45db2 | 1855 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1856 | { |
1857 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1858 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1859 | } |
1860 | ||
033a42c2 | 1861 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1862 | |
7a292a7a | 1863 | static void |
fba45db2 | 1864 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1865 | { |
033a42c2 | 1866 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1867 | } |
c906108c | 1868 | |
033a42c2 MK |
1869 | /* Select the frame up one or COUNT_EXP stack levels from the |
1870 | previously selected frame, and print it briefly. */ | |
c906108c | 1871 | |
c906108c | 1872 | static void |
fba45db2 | 1873 | up_silently_base (char *count_exp) |
c906108c | 1874 | { |
033a42c2 MK |
1875 | struct frame_info *frame; |
1876 | int count = 1; | |
1877 | ||
c906108c | 1878 | if (count_exp) |
bb518678 | 1879 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1880 | |
033a42c2 MK |
1881 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1882 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1883 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1884 | select_frame (frame); |
c906108c SS |
1885 | } |
1886 | ||
1887 | static void | |
fba45db2 | 1888 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1889 | { |
c5aa993b | 1890 | up_silently_base (count_exp); |
c906108c SS |
1891 | } |
1892 | ||
1893 | static void | |
fba45db2 | 1894 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1895 | { |
1896 | up_silently_base (count_exp); | |
b04f3ab4 | 1897 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1898 | } |
1899 | ||
033a42c2 MK |
1900 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1901 | selected frame, and print it briefly. */ | |
c906108c | 1902 | |
c906108c | 1903 | static void |
fba45db2 | 1904 | down_silently_base (char *count_exp) |
c906108c | 1905 | { |
52f0bd74 | 1906 | struct frame_info *frame; |
033a42c2 | 1907 | int count = -1; |
f89b749f | 1908 | |
c906108c | 1909 | if (count_exp) |
bb518678 | 1910 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1911 | |
033a42c2 MK |
1912 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1913 | if (count != 0 && count_exp == NULL) | |
c906108c | 1914 | { |
033a42c2 MK |
1915 | /* We only do this if COUNT_EXP is not specified. That way |
1916 | "down" means to really go down (and let me know if that is | |
1917 | impossible), but "down 9999" can be used to mean go all the | |
1918 | way down without getting an error. */ | |
c906108c | 1919 | |
033a42c2 | 1920 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1921 | } |
1922 | ||
0f7d239c | 1923 | select_frame (frame); |
c906108c SS |
1924 | } |
1925 | ||
c906108c | 1926 | static void |
fba45db2 | 1927 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1928 | { |
1929 | down_silently_base (count_exp); | |
c906108c SS |
1930 | } |
1931 | ||
1932 | static void | |
fba45db2 | 1933 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1934 | { |
1935 | down_silently_base (count_exp); | |
b04f3ab4 | 1936 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1937 | } |
1938 | \f | |
033a42c2 | 1939 | |
8b93c638 | 1940 | void |
fba45db2 | 1941 | return_command (char *retval_exp, int from_tty) |
c906108c | 1942 | { |
5ed92fa8 | 1943 | struct frame_info *thisframe; |
d80b854b | 1944 | struct gdbarch *gdbarch; |
c906108c | 1945 | struct symbol *thisfun; |
3d6d86c6 | 1946 | struct value *return_value = NULL; |
fc70c2a0 | 1947 | const char *query_prefix = ""; |
c906108c | 1948 | |
5ed92fa8 UW |
1949 | thisframe = get_selected_frame ("No selected frame."); |
1950 | thisfun = get_frame_function (thisframe); | |
d80b854b | 1951 | gdbarch = get_frame_arch (thisframe); |
c906108c | 1952 | |
edb3359d DJ |
1953 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
1954 | error (_("Can not force return from an inlined function.")); | |
1955 | ||
fc70c2a0 AC |
1956 | /* Compute the return value. If the computation triggers an error, |
1957 | let it bail. If the return type can't be handled, set | |
1958 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1959 | message. */ | |
c906108c SS |
1960 | if (retval_exp) |
1961 | { | |
61ff14c6 JK |
1962 | struct expression *retval_expr = parse_expression (retval_exp); |
1963 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
1964 | struct type *return_type = NULL; |
1965 | ||
fc70c2a0 AC |
1966 | /* Compute the return value. Should the computation fail, this |
1967 | call throws an error. */ | |
61ff14c6 | 1968 | return_value = evaluate_expression (retval_expr); |
c906108c | 1969 | |
fc70c2a0 AC |
1970 | /* Cast return value to the return type of the function. Should |
1971 | the cast fail, this call throws an error. */ | |
c906108c SS |
1972 | if (thisfun != NULL) |
1973 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1974 | if (return_type == NULL) | |
61ff14c6 JK |
1975 | { |
1976 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
1977 | error (_("Return value type not available for selected " | |
1978 | "stack frame.\n" | |
1979 | "Please use an explicit cast of the value to return.")); | |
1980 | return_type = value_type (return_value); | |
1981 | } | |
1982 | do_cleanups (old_chain); | |
3e9a183c | 1983 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1984 | return_value = value_cast (return_type, return_value); |
1985 | ||
fc70c2a0 AC |
1986 | /* Make sure the value is fully evaluated. It may live in the |
1987 | stack frame we're about to pop. */ | |
d69fe07e | 1988 | if (value_lazy (return_value)) |
c906108c | 1989 | value_fetch_lazy (return_value); |
c906108c | 1990 | |
667e784f AC |
1991 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1992 | /* If the return-type is "void", don't try to find the | |
1993 | return-value's location. However, do still evaluate the | |
1994 | return expression so that, even when the expression result | |
1995 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1996 | occur. */ |
667e784f | 1997 | return_value = NULL; |
42e2132c | 1998 | else if (thisfun != NULL |
d80b854b UW |
1999 | && using_struct_return (gdbarch, |
2000 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 2001 | { |
667e784f AC |
2002 | query_prefix = "\ |
2003 | The location at which to store the function's return value is unknown.\n\ | |
2004 | If you continue, the return value that you specified will be ignored.\n"; | |
2005 | return_value = NULL; | |
fc70c2a0 | 2006 | } |
c906108c SS |
2007 | } |
2008 | ||
fc70c2a0 AC |
2009 | /* Does an interactive user really want to do this? Include |
2010 | information, such as how well GDB can handle the return value, in | |
2011 | the query message. */ | |
2012 | if (from_tty) | |
2013 | { | |
2014 | int confirmed; | |
2015 | if (thisfun == NULL) | |
e2e0b3e5 | 2016 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2017 | query_prefix); |
2018 | else | |
e2e0b3e5 | 2019 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2020 | SYMBOL_PRINT_NAME (thisfun)); |
2021 | if (!confirmed) | |
8a3fe4f8 | 2022 | error (_("Not confirmed")); |
fc70c2a0 | 2023 | } |
c906108c | 2024 | |
a45ae3ed UW |
2025 | /* Discard the selected frame and all frames inner-to it. */ |
2026 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2027 | |
a1f5b845 | 2028 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2029 | if (return_value != NULL) |
2030 | { | |
df407dfe | 2031 | struct type *return_type = value_type (return_value); |
7500260a | 2032 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
2033 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
2034 | ||
2035 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
2036 | NULL, NULL) | |
750eb019 | 2037 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 2038 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 2039 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2040 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2041 | } |
1a2aab69 | 2042 | |
fc70c2a0 AC |
2043 | /* If we are at the end of a call dummy now, pop the dummy frame |
2044 | too. */ | |
e8bcf01f AC |
2045 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2046 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2047 | |
c906108c | 2048 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2049 | if (from_tty) |
2050 | frame_command ("0", 1); | |
2051 | else | |
2052 | select_frame_command ("0", 0); | |
2053 | } | |
2054 | ||
033a42c2 MK |
2055 | /* Sets the scope to input function name, provided that the function |
2056 | is within the current stack frame */ | |
c906108c SS |
2057 | |
2058 | struct function_bounds | |
2059 | { | |
2060 | CORE_ADDR low, high; | |
2061 | }; | |
2062 | ||
2063 | static void | |
fba45db2 | 2064 | func_command (char *arg, int from_tty) |
c906108c | 2065 | { |
033a42c2 | 2066 | struct frame_info *frame; |
c906108c SS |
2067 | int found = 0; |
2068 | struct symtabs_and_lines sals; | |
2069 | int i; | |
2070 | int level = 1; | |
033a42c2 | 2071 | struct function_bounds *func_bounds = NULL; |
c906108c | 2072 | |
033a42c2 | 2073 | if (arg != NULL) |
c906108c SS |
2074 | return; |
2075 | ||
033a42c2 | 2076 | frame = parse_frame_specification ("0"); |
c906108c SS |
2077 | sals = decode_line_spec (arg, 1); |
2078 | func_bounds = (struct function_bounds *) xmalloc ( | |
2079 | sizeof (struct function_bounds) * sals.nelts); | |
2080 | for (i = 0; (i < sals.nelts && !found); i++) | |
2081 | { | |
033a42c2 MK |
2082 | if (sals.sals[i].pc == 0 |
2083 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2084 | &func_bounds[i].low, | |
2085 | &func_bounds[i].high) == 0) | |
c906108c | 2086 | { |
033a42c2 | 2087 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2088 | } |
2089 | } | |
2090 | ||
2091 | do | |
2092 | { | |
2093 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2094 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2095 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2096 | if (!found) |
2097 | { | |
2098 | level = 1; | |
033a42c2 | 2099 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2100 | } |
2101 | } | |
2102 | while (!found && level == 0); | |
2103 | ||
2104 | if (func_bounds) | |
b8c9b27d | 2105 | xfree (func_bounds); |
c906108c SS |
2106 | |
2107 | if (!found) | |
a3f17187 | 2108 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2109 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2110 | select_and_print_frame (frame); |
c906108c SS |
2111 | } |
2112 | ||
2113 | /* Gets the language of the current frame. */ | |
2114 | ||
2115 | enum language | |
fba45db2 | 2116 | get_frame_language (void) |
c906108c | 2117 | { |
206415a3 | 2118 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2119 | |
033a42c2 | 2120 | if (frame) |
c906108c | 2121 | { |
7ae4c3a5 | 2122 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2123 | associated symtab. To retrieve this symtab, we use the frame |
2124 | PC. However we cannot use the frame PC as is, because it | |
2125 | usually points to the instruction following the "call", which | |
2126 | is sometimes the first instruction of another function. So | |
2127 | we rely on get_frame_address_in_block(), it provides us with | |
2128 | a PC that is guaranteed to be inside the frame's code | |
2129 | block. */ | |
2130 | CORE_ADDR pc = get_frame_address_in_block (frame); | |
2131 | struct symtab *s = find_pc_symtab (pc); | |
2132 | ||
c906108c | 2133 | if (s) |
033a42c2 | 2134 | return s->language; |
c906108c | 2135 | } |
c906108c | 2136 | |
033a42c2 | 2137 | return language_unknown; |
c906108c SS |
2138 | } |
2139 | \f | |
033a42c2 MK |
2140 | |
2141 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2142 | void _initialize_stack (void); | |
2143 | ||
c906108c | 2144 | void |
fba45db2 | 2145 | _initialize_stack (void) |
c906108c | 2146 | { |
1bedd215 AC |
2147 | add_com ("return", class_stack, return_command, _("\ |
2148 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2149 | Control remains in the debugger, but when you continue\n\ |
2150 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2151 | If an argument is given, it is an expression for the value to return.")); |
2152 | ||
2153 | add_com ("up", class_stack, up_command, _("\ | |
2154 | Select and print stack frame that called this one.\n\ | |
2155 | An argument says how many frames up to go.")); | |
2156 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2157 | Same as the `up' command, but does not print anything.\n\ | |
2158 | This is useful in command scripts.")); | |
2159 | ||
2160 | add_com ("down", class_stack, down_command, _("\ | |
2161 | Select and print stack frame called by this one.\n\ | |
2162 | An argument says how many frames down to go.")); | |
c906108c SS |
2163 | add_com_alias ("do", "down", class_stack, 1); |
2164 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2165 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2166 | Same as the `down' command, but does not print anything.\n\ | |
2167 | This is useful in command scripts.")); | |
c906108c | 2168 | |
1bedd215 AC |
2169 | add_com ("frame", class_stack, frame_command, _("\ |
2170 | Select and print a stack frame.\n\ | |
c906108c SS |
2171 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ |
2172 | An argument specifies the frame to select.\n\ | |
2173 | It can be a stack frame number or the address of the frame.\n\ | |
2174 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2175 | a command file or a user-defined command.")); |
c906108c SS |
2176 | |
2177 | add_com_alias ("f", "frame", class_stack, 1); | |
2178 | ||
2179 | if (xdb_commands) | |
2180 | { | |
c5aa993b | 2181 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2182 | _("Print the current stack frame.\n")); |
c906108c SS |
2183 | add_com_alias ("V", "frame", class_stack, 1); |
2184 | } | |
1bedd215 AC |
2185 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2186 | Select a stack frame without printing anything.\n\ | |
c906108c | 2187 | An argument specifies the frame to select.\n\ |
1bedd215 | 2188 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2189 | |
1bedd215 AC |
2190 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2191 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
c906108c | 2192 | With a negative argument, print outermost -COUNT frames.\n\ |
1bedd215 | 2193 | Use of the 'full' qualifier also prints the values of the local variables.\n")); |
c906108c SS |
2194 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2195 | if (xdb_commands) | |
2196 | { | |
2197 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 AC |
2198 | add_com ("T", class_stack, backtrace_full_command, _("\ |
2199 | Print backtrace of all stack frames, or innermost COUNT frames \n\ | |
c906108c SS |
2200 | and the values of the local variables.\n\ |
2201 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2202 | Usage: T <count>\n")); |
c906108c SS |
2203 | } |
2204 | ||
2205 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2206 | add_info ("stack", backtrace_command, | |
1bedd215 | 2207 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2208 | add_info_alias ("s", "stack", 1); |
2209 | add_info ("frame", frame_info, | |
1bedd215 | 2210 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2211 | add_info_alias ("f", "frame", 1); |
2212 | add_info ("locals", locals_info, | |
1bedd215 | 2213 | _("Local variables of current stack frame.")); |
c906108c | 2214 | add_info ("args", args_info, |
1bedd215 | 2215 | _("Argument variables of current stack frame.")); |
c906108c | 2216 | if (xdb_commands) |
c5aa993b | 2217 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2218 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2219 | |
2220 | if (dbx_commands) | |
1bedd215 AC |
2221 | add_com ("func", class_stack, func_command, _("\ |
2222 | Select the stack frame that contains <func>.\n\ | |
2223 | Usage: func <name>\n")); | |
c906108c SS |
2224 | |
2225 | add_info ("catch", catch_info, | |
1bedd215 | 2226 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2227 | |
88408340 JB |
2228 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2229 | print_frame_arguments_choices, &print_frame_arguments, | |
2230 | _("Set printing of non-scalar frame arguments"), | |
2231 | _("Show printing of non-scalar frame arguments"), | |
2232 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2233 | ||
30c33a9f HZ |
2234 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2235 | &disassemble_next_line, _("\ | |
80a0ea0f EZ |
2236 | Set whether to disassemble next source line or insn when execution stops."), _("\ |
2237 | Show whether to disassemble next source line or insn when execution stops."), _("\ | |
2238 | If ON, GDB will display disassembly of the next source line, in addition\n\ | |
2239 | to displaying the source line itself. If the next source line cannot\n\ | |
2240 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2241 | will display disassembly of next instruction instead of showing the\n\ | |
2242 | source line.\n\ | |
2243 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2244 | cannot be displayed.\n\ | |
2245 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2246 | source line."), | |
30c33a9f HZ |
2247 | NULL, |
2248 | show_disassemble_next_line, | |
2249 | &setlist, &showlist); | |
a362e3d3 | 2250 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
c906108c | 2251 | } |