Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
c906108c | 20 | #include "defs.h" |
c906108c SS |
21 | #include "value.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "frame.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "gdbcore.h" | |
29 | #include "target.h" | |
0378c332 | 30 | #include "source.h" |
c906108c SS |
31 | #include "breakpoint.h" |
32 | #include "demangle.h" | |
33 | #include "inferior.h" | |
34 | #include "annotate.h" | |
8b93c638 | 35 | #include "ui-out.h" |
fe898f56 | 36 | #include "block.h" |
b9362cc7 | 37 | #include "stack.h" |
de4f826b | 38 | #include "dictionary.h" |
60250e8b | 39 | #include "exceptions.h" |
898c62f5 | 40 | #include "reggroups.h" |
fc70c2a0 | 41 | #include "regcache.h" |
a77053c2 | 42 | #include "solib.h" |
033a42c2 | 43 | #include "valprint.h" |
8ea051c5 | 44 | #include "gdbthread.h" |
3567439c | 45 | #include "cp-support.h" |
30c33a9f | 46 | #include "disasm.h" |
edb3359d | 47 | #include "inline-frame.h" |
f8eba3c6 | 48 | #include "linespec.h" |
529480d0 | 49 | #include "cli/cli-utils.h" |
77e371c0 | 50 | #include "objfiles.h" |
c906108c | 51 | |
033a42c2 MK |
52 | #include "gdb_assert.h" |
53 | #include <ctype.h> | |
0e9f083f | 54 | #include <string.h> |
c906108c | 55 | |
ccefe4c4 | 56 | #include "symfile.h" |
6dddc817 | 57 | #include "extension.h" |
ccefe4c4 | 58 | |
9a4105ab | 59 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 60 | |
2421fe6f | 61 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
62 | of this setting. */ |
63 | ||
40478521 | 64 | static const char *const print_frame_arguments_choices[] = |
88408340 | 65 | {"all", "scalars", "none", NULL}; |
476f7b68 | 66 | static const char *print_frame_arguments = "scalars"; |
88408340 | 67 | |
e7045703 DE |
68 | /* If non-zero, don't invoke pretty-printers for frame arguments. */ |
69 | static int print_raw_frame_arguments; | |
70 | ||
e18b2753 JK |
71 | /* The possible choices of "set print entry-values", and the value |
72 | of this setting. */ | |
73 | ||
74 | const char print_entry_values_no[] = "no"; | |
75 | const char print_entry_values_only[] = "only"; | |
76 | const char print_entry_values_preferred[] = "preferred"; | |
77 | const char print_entry_values_if_needed[] = "if-needed"; | |
78 | const char print_entry_values_both[] = "both"; | |
79 | const char print_entry_values_compact[] = "compact"; | |
80 | const char print_entry_values_default[] = "default"; | |
40478521 | 81 | static const char *const print_entry_values_choices[] = |
e18b2753 JK |
82 | { |
83 | print_entry_values_no, | |
84 | print_entry_values_only, | |
85 | print_entry_values_preferred, | |
86 | print_entry_values_if_needed, | |
87 | print_entry_values_both, | |
88 | print_entry_values_compact, | |
89 | print_entry_values_default, | |
90 | NULL | |
91 | }; | |
92 | const char *print_entry_values = print_entry_values_default; | |
93 | ||
c378eb4e | 94 | /* Prototypes for local functions. */ |
c906108c | 95 | |
d9fcf2fb JM |
96 | static void print_frame_local_vars (struct frame_info *, int, |
97 | struct ui_file *); | |
c906108c | 98 | |
033a42c2 MK |
99 | static void print_frame (struct frame_info *frame, int print_level, |
100 | enum print_what print_what, int print_args, | |
c5394b80 JM |
101 | struct symtab_and_line sal); |
102 | ||
1bfeeb0f JL |
103 | static void set_last_displayed_sal (int valid, |
104 | struct program_space *pspace, | |
105 | CORE_ADDR addr, | |
106 | struct symtab *symtab, | |
107 | int line); | |
108 | ||
c906108c SS |
109 | /* Zero means do things normally; we are interacting directly with the |
110 | user. One means print the full filename and linenumber when a | |
111 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
112 | parse. Two means print similar annotations, but in many more | |
113 | cases and in a slightly different syntax. */ | |
114 | ||
115 | int annotation_level = 0; | |
1bfeeb0f JL |
116 | |
117 | /* These variables hold the last symtab and line we displayed to the user. | |
118 | * This is where we insert a breakpoint or a skiplist entry by default. */ | |
119 | static int last_displayed_sal_valid = 0; | |
120 | static struct program_space *last_displayed_pspace = 0; | |
121 | static CORE_ADDR last_displayed_addr = 0; | |
122 | static struct symtab *last_displayed_symtab = 0; | |
123 | static int last_displayed_line = 0; | |
c906108c | 124 | \f |
c5aa993b | 125 | |
edb3359d DJ |
126 | /* Return 1 if we should display the address in addition to the location, |
127 | because we are in the middle of a statement. */ | |
128 | ||
129 | static int | |
130 | frame_show_address (struct frame_info *frame, | |
131 | struct symtab_and_line sal) | |
132 | { | |
133 | /* If there is a line number, but no PC, then there is no location | |
134 | information associated with this sal. The only way that should | |
135 | happen is for the call sites of inlined functions (SAL comes from | |
136 | find_frame_sal). Otherwise, we would have some PC range if the | |
137 | SAL came from a line table. */ | |
138 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
139 | { | |
140 | if (get_next_frame (frame) == NULL) | |
141 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
142 | else | |
143 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | return get_frame_pc (frame) != sal.pc; | |
148 | } | |
149 | ||
033a42c2 | 150 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
151 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
152 | relative level, function name, argument list, and file name and | |
153 | line number. If the frame's PC is not at the beginning of the | |
154 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
155 | |
156 | void | |
033a42c2 | 157 | print_stack_frame (struct frame_info *frame, int print_level, |
08d72866 PA |
158 | enum print_what print_what, |
159 | int set_current_sal) | |
c906108c | 160 | { |
311b5970 | 161 | volatile struct gdb_exception e; |
c906108c | 162 | |
aaf9e9fd | 163 | /* For mi, alway print location and address. */ |
79a45e25 | 164 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 165 | print_what = LOC_AND_ADDRESS; |
c906108c | 166 | |
311b5970 JK |
167 | TRY_CATCH (e, RETURN_MASK_ERROR) |
168 | { | |
169 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); | |
c906108c | 170 | |
08d72866 PA |
171 | print_frame_info (frame, print_level, print_what, 1 /* print_args */, |
172 | set_current_sal); | |
173 | if (set_current_sal) | |
174 | set_current_sal_from_frame (frame, center); | |
311b5970 JK |
175 | } |
176 | } | |
c906108c | 177 | |
033a42c2 MK |
178 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
179 | the offset of the first nameless argument, and NUM is the number of | |
180 | nameless arguments to print. FIRST is nonzero if this is the first | |
181 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
182 | |
183 | static void | |
033a42c2 | 184 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
185 | int first, struct ui_file *stream) |
186 | { | |
e17a4113 UW |
187 | struct gdbarch *gdbarch = get_frame_arch (frame); |
188 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
189 | int i; |
190 | CORE_ADDR argsaddr; | |
191 | long arg_value; | |
192 | ||
193 | for (i = 0; i < num; i++) | |
194 | { | |
195 | QUIT; | |
033a42c2 | 196 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
197 | if (!argsaddr) |
198 | return; | |
e17a4113 UW |
199 | arg_value = read_memory_integer (argsaddr + start, |
200 | sizeof (int), byte_order); | |
8d3b0994 AC |
201 | if (!first) |
202 | fprintf_filtered (stream, ", "); | |
203 | fprintf_filtered (stream, "%ld", arg_value); | |
204 | first = 0; | |
205 | start += sizeof (int); | |
206 | } | |
207 | } | |
208 | ||
93d86cef JK |
209 | /* Print single argument of inferior function. ARG must be already |
210 | read in. | |
211 | ||
212 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
213 | iff it should not be printed accoring to user settings. */ | |
214 | ||
215 | static void | |
216 | print_frame_arg (const struct frame_arg *arg) | |
217 | { | |
218 | struct ui_out *uiout = current_uiout; | |
219 | volatile struct gdb_exception except; | |
220 | struct cleanup *old_chain; | |
f99d8bf4 | 221 | struct ui_file *stb; |
93d86cef | 222 | |
f99d8bf4 PA |
223 | stb = mem_fileopen (); |
224 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
225 | |
226 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
227 | gdb_assert (arg->entry_kind == print_entry_values_no |
228 | || arg->entry_kind == print_entry_values_only | |
229 | || (!ui_out_is_mi_like_p (uiout) | |
230 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
231 | |
232 | annotate_arg_begin (); | |
233 | ||
234 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
f99d8bf4 | 235 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 236 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
237 | if (arg->entry_kind == print_entry_values_compact) |
238 | { | |
239 | /* It is OK to provide invalid MI-like stream as with | |
240 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
f99d8bf4 | 241 | fputs_filtered ("=", stb); |
e18b2753 | 242 | |
f99d8bf4 | 243 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
244 | SYMBOL_LANGUAGE (arg->sym), |
245 | DMGL_PARAMS | DMGL_ANSI); | |
246 | } | |
247 | if (arg->entry_kind == print_entry_values_only | |
248 | || arg->entry_kind == print_entry_values_compact) | |
f99d8bf4 | 249 | fputs_filtered ("@entry", stb); |
93d86cef JK |
250 | ui_out_field_stream (uiout, "name", stb); |
251 | annotate_arg_name_end (); | |
252 | ui_out_text (uiout, "="); | |
253 | ||
254 | if (!arg->val && !arg->error) | |
255 | ui_out_text (uiout, "..."); | |
256 | else | |
257 | { | |
258 | if (arg->error) | |
259 | except.message = arg->error; | |
260 | else | |
261 | { | |
262 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
263 | ||
264 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
265 | { | |
266 | const struct language_defn *language; | |
267 | struct value_print_options opts; | |
268 | ||
269 | /* Avoid value_print because it will deref ref parameters. We | |
270 | just want to print their addresses. Print ??? for args whose | |
271 | address we do not know. We pass 2 as "recurse" to val_print | |
272 | because our standard indentation here is 4 spaces, and | |
273 | val_print indents 2 for each recurse. */ | |
274 | ||
275 | annotate_arg_value (value_type (arg->val)); | |
276 | ||
277 | /* Use the appropriate language to display our symbol, unless the | |
278 | user forced the language to a specific language. */ | |
279 | if (language_mode == language_mode_auto) | |
280 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
281 | else | |
282 | language = current_language; | |
283 | ||
2a998fc0 | 284 | get_no_prettyformat_print_options (&opts); |
3343315b | 285 | opts.deref_ref = 1; |
e7045703 | 286 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
287 | |
288 | /* True in "summary" mode, false otherwise. */ | |
289 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
290 | ||
f99d8bf4 | 291 | common_val_print (arg->val, stb, 2, &opts, language); |
93d86cef JK |
292 | } |
293 | } | |
294 | if (except.message) | |
f99d8bf4 | 295 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
93d86cef JK |
296 | except.message); |
297 | } | |
298 | ||
299 | ui_out_field_stream (uiout, "value", stb); | |
300 | ||
f99d8bf4 | 301 | /* Also invoke ui_out_tuple_end. */ |
93d86cef JK |
302 | do_cleanups (old_chain); |
303 | ||
304 | annotate_arg_end (); | |
305 | } | |
306 | ||
82a0a75f YQ |
307 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
308 | responsible for xfree of ARGP->ERROR. This function never throws an | |
309 | exception. */ | |
310 | ||
311 | void | |
312 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
313 | struct frame_arg *argp) | |
314 | { | |
315 | volatile struct gdb_exception except; | |
316 | struct value *val = NULL; | |
317 | ||
318 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
319 | { | |
320 | val = read_var_value (sym, frame); | |
321 | } | |
322 | ||
323 | argp->error = (val == NULL) ? xstrdup (except.message) : NULL; | |
324 | argp->sym = sym; | |
325 | argp->val = val; | |
326 | } | |
327 | ||
93d86cef JK |
328 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is |
329 | responsible for xfree of ARGP->ERROR. This function never throws an | |
330 | exception. */ | |
331 | ||
332 | void | |
333 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 334 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 335 | { |
e18b2753 JK |
336 | struct value *val = NULL, *entryval = NULL; |
337 | char *val_error = NULL, *entryval_error = NULL; | |
338 | int val_equal = 0; | |
93d86cef JK |
339 | volatile struct gdb_exception except; |
340 | ||
e18b2753 JK |
341 | if (print_entry_values != print_entry_values_only |
342 | && print_entry_values != print_entry_values_preferred) | |
343 | { | |
344 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
345 | { | |
346 | val = read_var_value (sym, frame); | |
347 | } | |
348 | if (!val) | |
349 | { | |
350 | val_error = alloca (strlen (except.message) + 1); | |
351 | strcpy (val_error, except.message); | |
352 | } | |
353 | } | |
354 | ||
24d6c2a0 TT |
355 | if (SYMBOL_COMPUTED_OPS (sym) != NULL |
356 | && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL | |
e18b2753 JK |
357 | && print_entry_values != print_entry_values_no |
358 | && (print_entry_values != print_entry_values_if_needed | |
359 | || !val || value_optimized_out (val))) | |
360 | { | |
361 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
362 | { | |
363 | const struct symbol_computed_ops *ops; | |
364 | ||
365 | ops = SYMBOL_COMPUTED_OPS (sym); | |
366 | entryval = ops->read_variable_at_entry (sym, frame); | |
367 | } | |
368 | if (!entryval) | |
369 | { | |
370 | entryval_error = alloca (strlen (except.message) + 1); | |
371 | strcpy (entryval_error, except.message); | |
372 | } | |
373 | ||
374 | if (except.error == NO_ENTRY_VALUE_ERROR | |
375 | || (entryval && value_optimized_out (entryval))) | |
376 | { | |
377 | entryval = NULL; | |
378 | entryval_error = NULL; | |
379 | } | |
380 | ||
381 | if (print_entry_values == print_entry_values_compact | |
382 | || print_entry_values == print_entry_values_default) | |
383 | { | |
384 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
385 | ||
386 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
387 | { | |
744a8059 | 388 | struct type *type = value_type (val); |
e18b2753 | 389 | |
e18b2753 | 390 | if (!value_optimized_out (val) |
744a8059 SP |
391 | && value_available_contents_eq (val, 0, entryval, 0, |
392 | TYPE_LENGTH (type))) | |
e18b2753 | 393 | { |
509f0fd9 JK |
394 | /* Initialize it just to avoid a GCC false warning. */ |
395 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
396 | |
397 | /* DW_AT_GNU_call_site_value does match with the current | |
398 | value. If it is a reference still try to verify if | |
399 | dereferenced DW_AT_GNU_call_site_data_value does not | |
400 | differ. */ | |
401 | ||
402 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
403 | { | |
744a8059 | 404 | struct type *type_deref; |
a471c594 JK |
405 | |
406 | val_deref = coerce_ref (val); | |
407 | if (value_lazy (val_deref)) | |
408 | value_fetch_lazy (val_deref); | |
744a8059 | 409 | type_deref = value_type (val_deref); |
a471c594 JK |
410 | |
411 | entryval_deref = coerce_ref (entryval); | |
412 | if (value_lazy (entryval_deref)) | |
413 | value_fetch_lazy (entryval_deref); | |
414 | ||
415 | /* If the reference addresses match but dereferenced | |
416 | content does not match print them. */ | |
417 | if (val != val_deref | |
418 | && value_available_contents_eq (val_deref, 0, | |
419 | entryval_deref, 0, | |
744a8059 | 420 | TYPE_LENGTH (type_deref))) |
a471c594 JK |
421 | val_equal = 1; |
422 | } | |
423 | ||
424 | /* Value was not a reference; and its content matches. */ | |
425 | if (val == val_deref) | |
426 | val_equal = 1; | |
427 | /* If the dereferenced content could not be fetched do not | |
428 | display anything. */ | |
429 | else if (except.error == NO_ENTRY_VALUE_ERROR) | |
430 | val_equal = 1; | |
431 | else if (except.message) | |
432 | { | |
433 | entryval_error = alloca (strlen (except.message) + 1); | |
434 | strcpy (entryval_error, except.message); | |
435 | } | |
436 | ||
437 | if (val_equal) | |
438 | entryval = NULL; | |
e18b2753 JK |
439 | } |
440 | } | |
441 | ||
442 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
443 | in MI mode. */ | |
444 | ||
445 | if (val_error && entryval_error | |
446 | && strcmp (val_error, entryval_error) == 0) | |
447 | { | |
448 | entryval_error = NULL; | |
449 | ||
450 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
451 | the entry value even if no entry values are present in the | |
452 | inferior. */ | |
453 | } | |
454 | } | |
455 | } | |
456 | ||
457 | if (entryval == NULL) | |
93d86cef | 458 | { |
e18b2753 JK |
459 | if (print_entry_values == print_entry_values_preferred) |
460 | { | |
461 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
462 | { | |
463 | val = read_var_value (sym, frame); | |
464 | } | |
465 | if (!val) | |
466 | { | |
467 | val_error = alloca (strlen (except.message) + 1); | |
468 | strcpy (val_error, except.message); | |
469 | } | |
470 | } | |
471 | if (print_entry_values == print_entry_values_only | |
472 | || print_entry_values == print_entry_values_both | |
473 | || (print_entry_values == print_entry_values_preferred | |
474 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
475 | { |
476 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
477 | entryval_error = NULL; | |
478 | } | |
93d86cef | 479 | } |
e18b2753 JK |
480 | if ((print_entry_values == print_entry_values_compact |
481 | || print_entry_values == print_entry_values_if_needed | |
482 | || print_entry_values == print_entry_values_preferred) | |
483 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 484 | { |
e18b2753 JK |
485 | val = NULL; |
486 | val_error = NULL; | |
93d86cef JK |
487 | } |
488 | ||
489 | argp->sym = sym; | |
490 | argp->val = val; | |
491 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
492 | if (!val && !val_error) |
493 | argp->entry_kind = print_entry_values_only; | |
494 | else if ((print_entry_values == print_entry_values_compact | |
495 | || print_entry_values == print_entry_values_default) && val_equal) | |
496 | { | |
497 | argp->entry_kind = print_entry_values_compact; | |
498 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
499 | } | |
500 | else | |
501 | argp->entry_kind = print_entry_values_no; | |
502 | ||
503 | entryargp->sym = sym; | |
504 | entryargp->val = entryval; | |
505 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
506 | if (!entryval && !entryval_error) | |
507 | entryargp->entry_kind = print_entry_values_no; | |
508 | else | |
509 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
510 | } |
511 | ||
033a42c2 MK |
512 | /* Print the arguments of frame FRAME on STREAM, given the function |
513 | FUNC running in that frame (as a symbol), where NUM is the number | |
514 | of arguments according to the stack frame (or -1 if the number of | |
515 | arguments is unknown). */ | |
8d3b0994 | 516 | |
e3168615 | 517 | /* Note that currently the "number of arguments according to the |
033a42c2 | 518 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 519 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
520 | |
521 | static void | |
033a42c2 MK |
522 | print_frame_args (struct symbol *func, struct frame_info *frame, |
523 | int num, struct ui_file *stream) | |
8d3b0994 | 524 | { |
79a45e25 | 525 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 526 | int first = 1; |
8d3b0994 | 527 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
528 | at the highest offset, or -1 if we haven't come to a stack |
529 | argument yet. */ | |
8d3b0994 | 530 | long highest_offset = -1; |
8d3b0994 AC |
531 | /* Number of ints of arguments that we have printed so far. */ |
532 | int args_printed = 0; | |
22e048c9 | 533 | struct cleanup *old_chain; |
f99d8bf4 | 534 | struct ui_file *stb; |
a6bac58e TT |
535 | /* True if we should print arguments, false otherwise. */ |
536 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 537 | |
f99d8bf4 PA |
538 | stb = mem_fileopen (); |
539 | old_chain = make_cleanup_ui_file_delete (stb); | |
8d3b0994 AC |
540 | |
541 | if (func) | |
542 | { | |
033a42c2 | 543 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 544 | struct block_iterator iter; |
033a42c2 | 545 | struct symbol *sym; |
8d3b0994 | 546 | |
de4f826b | 547 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 548 | { |
e18b2753 | 549 | struct frame_arg arg, entryarg; |
93d86cef | 550 | |
8d3b0994 AC |
551 | QUIT; |
552 | ||
553 | /* Keep track of the highest stack argument offset seen, and | |
554 | skip over any kinds of symbols we don't care about. */ | |
555 | ||
2a2d4dc3 AS |
556 | if (!SYMBOL_IS_ARGUMENT (sym)) |
557 | continue; | |
558 | ||
8d3b0994 AC |
559 | switch (SYMBOL_CLASS (sym)) |
560 | { | |
561 | case LOC_ARG: | |
562 | case LOC_REF_ARG: | |
563 | { | |
564 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 565 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
566 | |
567 | /* Compute address of next argument by adding the size of | |
568 | this argument and rounding to an int boundary. */ | |
569 | current_offset = | |
570 | ((current_offset + arg_size + sizeof (int) - 1) | |
571 | & ~(sizeof (int) - 1)); | |
572 | ||
033a42c2 MK |
573 | /* If this is the highest offset seen yet, set |
574 | highest_offset. */ | |
8d3b0994 AC |
575 | if (highest_offset == -1 |
576 | || (current_offset > highest_offset)) | |
577 | highest_offset = current_offset; | |
578 | ||
033a42c2 MK |
579 | /* Add the number of ints we're about to print to |
580 | args_printed. */ | |
8d3b0994 AC |
581 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
582 | } | |
583 | ||
033a42c2 MK |
584 | /* We care about types of symbols, but don't need to |
585 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 586 | case LOC_REGISTER: |
8d3b0994 | 587 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
588 | case LOC_COMPUTED: |
589 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 590 | default: |
2a2d4dc3 | 591 | break; |
8d3b0994 AC |
592 | } |
593 | ||
594 | /* We have to look up the symbol because arguments can have | |
595 | two entries (one a parameter, one a local) and the one we | |
596 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 597 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
598 | small structure and gcc2 when the argument type is float |
599 | and it is passed as a double and converted to float by | |
600 | the prologue (in the latter case the type of the LOC_ARG | |
601 | symbol is double and the type of the LOC_LOCAL symbol is | |
602 | float). */ | |
033a42c2 MK |
603 | /* But if the parameter name is null, don't try it. Null |
604 | parameter names occur on the RS/6000, for traceback | |
605 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 606 | |
3567439c | 607 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
608 | { |
609 | struct symbol *nsym; | |
433759f7 | 610 | |
3567439c | 611 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 612 | b, VAR_DOMAIN, NULL); |
55765a25 | 613 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
614 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
615 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 616 | { |
033a42c2 MK |
617 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
618 | that it was passed on the stack and loaded into a | |
619 | register, or passed in a register and stored in a | |
620 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
621 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
622 | |
623 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
624 | |
625 | (1) Because find_saved_registers may be slow for | |
626 | remote debugging. | |
627 | ||
628 | (2) Because registers are often re-used and stack | |
629 | slots rarely (never?) are. Therefore using | |
630 | the stack slot is much less likely to print | |
631 | garbage. | |
8d3b0994 AC |
632 | |
633 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
634 | |
635 | (1) So that the backtrace prints the same value | |
636 | as "print foo". I see no compelling reason | |
637 | why this needs to be the case; having the | |
638 | backtrace print the value which was passed | |
639 | in, and "print foo" print the value as | |
640 | modified within the called function, makes | |
641 | perfect sense to me. | |
642 | ||
643 | Additional note: It might be nice if "info args" | |
644 | displayed both values. | |
645 | ||
646 | One more note: There is a case with SPARC | |
647 | structure passing where we need to use the | |
648 | LOC_REGISTER, but this is dealt with by creating | |
649 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
650 | |
651 | /* Leave sym (the LOC_ARG) alone. */ | |
652 | ; | |
653 | } | |
654 | else | |
655 | sym = nsym; | |
656 | } | |
657 | ||
658 | /* Print the current arg. */ | |
659 | if (!first) | |
660 | ui_out_text (uiout, ", "); | |
661 | ui_out_wrap_hint (uiout, " "); | |
662 | ||
93d86cef JK |
663 | if (!print_args) |
664 | { | |
665 | memset (&arg, 0, sizeof (arg)); | |
666 | arg.sym = sym; | |
e18b2753 JK |
667 | arg.entry_kind = print_entry_values_no; |
668 | memset (&entryarg, 0, sizeof (entryarg)); | |
669 | entryarg.sym = sym; | |
670 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
671 | } |
672 | else | |
e18b2753 | 673 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 674 | |
e18b2753 JK |
675 | if (arg.entry_kind != print_entry_values_only) |
676 | print_frame_arg (&arg); | |
677 | ||
678 | if (entryarg.entry_kind != print_entry_values_no) | |
679 | { | |
680 | if (arg.entry_kind != print_entry_values_only) | |
681 | { | |
682 | ui_out_text (uiout, ", "); | |
683 | ui_out_wrap_hint (uiout, " "); | |
684 | } | |
685 | ||
686 | print_frame_arg (&entryarg); | |
687 | } | |
8d3b0994 | 688 | |
93d86cef | 689 | xfree (arg.error); |
e18b2753 | 690 | xfree (entryarg.error); |
8d3b0994 AC |
691 | |
692 | first = 0; | |
693 | } | |
694 | } | |
695 | ||
696 | /* Don't print nameless args in situations where we don't know | |
697 | enough about the stack to find them. */ | |
698 | if (num != -1) | |
699 | { | |
700 | long start; | |
701 | ||
702 | if (highest_offset == -1) | |
7500260a | 703 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
704 | else |
705 | start = highest_offset; | |
706 | ||
033a42c2 | 707 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
708 | first, stream); |
709 | } | |
033a42c2 | 710 | |
8d3b0994 AC |
711 | do_cleanups (old_chain); |
712 | } | |
713 | ||
033a42c2 MK |
714 | /* Set the current source and line to the location given by frame |
715 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
716 | line is in the center of the next 'list'. */ | |
c789492a | 717 | |
7abfe014 | 718 | void |
033a42c2 | 719 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
720 | { |
721 | struct symtab_and_line sal; | |
722 | ||
033a42c2 | 723 | find_frame_sal (frame, &sal); |
c789492a FL |
724 | if (sal.symtab) |
725 | { | |
726 | if (center) | |
727 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
728 | set_current_source_symtab_and_line (&sal); | |
729 | } | |
730 | } | |
731 | ||
30c33a9f HZ |
732 | /* If ON, GDB will display disassembly of the next source line when |
733 | execution of the program being debugged stops. | |
481df73e HZ |
734 | If AUTO (which is the default), or there's no line info to determine |
735 | the source line of the next instruction, display disassembly of next | |
736 | instruction instead. */ | |
30c33a9f HZ |
737 | |
738 | static enum auto_boolean disassemble_next_line; | |
739 | ||
740 | static void | |
741 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
742 | struct cmd_list_element *c, | |
743 | const char *value) | |
744 | { | |
3e43a32a MS |
745 | fprintf_filtered (file, |
746 | _("Debugger's willingness to use " | |
747 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
748 | value); |
749 | } | |
750 | ||
30c33a9f HZ |
751 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
752 | because it will be broken by filter sometime. */ | |
753 | ||
754 | static void | |
13274fc3 UW |
755 | do_gdb_disassembly (struct gdbarch *gdbarch, |
756 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
757 | { |
758 | volatile struct gdb_exception exception; | |
30c33a9f | 759 | |
b1d288d3 | 760 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 761 | { |
79a45e25 PA |
762 | gdb_disassembly (gdbarch, current_uiout, 0, |
763 | DISASSEMBLY_RAW_INSN, how_many, | |
764 | low, high); | |
30c33a9f | 765 | } |
b1d288d3 JK |
766 | if (exception.reason < 0) |
767 | { | |
768 | /* If an exception was thrown while doing the disassembly, print | |
769 | the error message, to give the user a clue of what happened. */ | |
770 | exception_print (gdb_stderr, exception); | |
771 | } | |
30c33a9f HZ |
772 | } |
773 | ||
033a42c2 | 774 | /* Print information about frame FRAME. The output is format according |
65aa373f | 775 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
776 | PRINT_WHAT is: |
777 | ||
778 | SRC_LINE: Print only source line. | |
779 | LOCATION: Print only location. | |
780 | LOC_AND_SRC: Print location and source line. | |
781 | ||
782 | Used in "where" output, and to emit breakpoint or step | |
783 | messages. */ | |
c906108c | 784 | |
7789c6f5 | 785 | void |
033a42c2 | 786 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
787 | enum print_what print_what, int print_args, |
788 | int set_current_sal) | |
c906108c | 789 | { |
5af949e3 | 790 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 791 | struct symtab_and_line sal; |
c5394b80 JM |
792 | int source_print; |
793 | int location_print; | |
79a45e25 | 794 | struct ui_out *uiout = current_uiout; |
c906108c | 795 | |
033a42c2 | 796 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
797 | || get_frame_type (frame) == SIGTRAMP_FRAME |
798 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 799 | { |
075559bc AC |
800 | struct cleanup *uiout_cleanup |
801 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 802 | |
033a42c2 | 803 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 804 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 805 | |
c906108c | 806 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 807 | to list for this frame. */ |
0faf0076 | 808 | if (print_level) |
52c6a6ac JJ |
809 | { |
810 | ui_out_text (uiout, "#"); | |
0faf0076 | 811 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 812 | frame_relative_level (frame)); |
52c6a6ac | 813 | } |
075559bc | 814 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 815 | { |
075559bc | 816 | annotate_frame_address (); |
5af949e3 UW |
817 | ui_out_field_core_addr (uiout, "addr", |
818 | gdbarch, get_frame_pc (frame)); | |
075559bc | 819 | annotate_frame_address_end (); |
52c6a6ac | 820 | } |
6a3fe0a4 | 821 | |
033a42c2 | 822 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
823 | { |
824 | annotate_function_call (); | |
825 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
826 | } | |
033a42c2 | 827 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
828 | { |
829 | annotate_signal_handler_caller (); | |
830 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
831 | } | |
36f15f55 UW |
832 | else if (get_frame_type (frame) == ARCH_FRAME) |
833 | { | |
834 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
835 | } | |
075559bc | 836 | ui_out_text (uiout, "\n"); |
c906108c | 837 | annotate_frame_end (); |
075559bc | 838 | |
433e77fa HZ |
839 | /* If disassemble-next-line is set to auto or on output the next |
840 | instruction. */ | |
841 | if (disassemble_next_line == AUTO_BOOLEAN_AUTO | |
842 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
843 | do_gdb_disassembly (get_frame_arch (frame), 1, | |
844 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
845 | ||
075559bc | 846 | do_cleanups (uiout_cleanup); |
c906108c SS |
847 | return; |
848 | } | |
849 | ||
033a42c2 MK |
850 | /* If FRAME is not the innermost frame, that normally means that |
851 | FRAME->pc points to *after* the call instruction, and we want to | |
852 | get the line containing the call, never the next line. But if | |
853 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
854 | next frame was not entered as the result of a call, and we want | |
855 | to get the line containing FRAME->pc. */ | |
856 | find_frame_sal (frame, &sal); | |
c906108c | 857 | |
0faf0076 AC |
858 | location_print = (print_what == LOCATION |
859 | || print_what == LOC_AND_ADDRESS | |
860 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
861 | |
862 | if (location_print || !sal.symtab) | |
033a42c2 | 863 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 864 | |
0faf0076 | 865 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 866 | |
30c33a9f HZ |
867 | /* If disassemble-next-line is set to auto or on and doesn't have |
868 | the line debug messages for $pc, output the next instruction. */ | |
869 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
870 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
871 | && source_print && !sal.symtab) | |
13274fc3 UW |
872 | do_gdb_disassembly (get_frame_arch (frame), 1, |
873 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 874 | |
c5394b80 JM |
875 | if (source_print && sal.symtab) |
876 | { | |
877 | int done = 0; | |
0faf0076 | 878 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 879 | && frame_show_address (frame, sal)); |
c5394b80 JM |
880 | |
881 | if (annotation_level) | |
882 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 883 | get_frame_pc (frame)); |
c5394b80 JM |
884 | if (!done) |
885 | { | |
9a4105ab | 886 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
887 | deprecated_print_frame_info_listing_hook (sal.symtab, |
888 | sal.line, | |
889 | sal.line + 1, 0); | |
ba4bbdcb | 890 | else |
c5394b80 | 891 | { |
79a45b7d | 892 | struct value_print_options opts; |
433759f7 | 893 | |
79a45b7d | 894 | get_user_print_options (&opts); |
ba4bbdcb | 895 | /* We used to do this earlier, but that is clearly |
c378eb4e | 896 | wrong. This function is used by many different |
ba4bbdcb KS |
897 | parts of gdb, including normal_stop in infrun.c, |
898 | which uses this to print out the current PC | |
899 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
900 | line. Only the command line really wants this |
901 | behavior. Other UIs probably would like the | |
cbd3c883 | 902 | ability to decide for themselves if it is desired. */ |
79a45b7d | 903 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 904 | { |
5af949e3 UW |
905 | ui_out_field_core_addr (uiout, "addr", |
906 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 907 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
908 | } |
909 | ||
910 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 911 | } |
c5394b80 | 912 | } |
30c33a9f HZ |
913 | |
914 | /* If disassemble-next-line is set to on and there is line debug | |
915 | messages, output assembly codes for next line. */ | |
916 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 917 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
918 | } |
919 | ||
08d72866 | 920 | if (set_current_sal) |
e3eebbd7 PA |
921 | { |
922 | CORE_ADDR pc; | |
923 | ||
924 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 925 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 926 | else |
1bfeeb0f | 927 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 928 | } |
c5394b80 JM |
929 | |
930 | annotate_frame_end (); | |
931 | ||
932 | gdb_flush (gdb_stdout); | |
933 | } | |
934 | ||
1bfeeb0f JL |
935 | /* Remember the last symtab and line we displayed, which we use e.g. |
936 | * as the place to put a breakpoint when the `break' command is | |
937 | * invoked with no arguments. */ | |
938 | ||
939 | static void | |
940 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
941 | CORE_ADDR addr, struct symtab *symtab, | |
942 | int line) | |
943 | { | |
944 | last_displayed_sal_valid = valid; | |
945 | last_displayed_pspace = pspace; | |
946 | last_displayed_addr = addr; | |
947 | last_displayed_symtab = symtab; | |
948 | last_displayed_line = line; | |
4cb6da1c AR |
949 | if (valid && pspace == NULL) |
950 | { | |
4cb6da1c | 951 | clear_last_displayed_sal (); |
e36930bb PA |
952 | internal_error (__FILE__, __LINE__, |
953 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 954 | } |
1bfeeb0f JL |
955 | } |
956 | ||
957 | /* Forget the last sal we displayed. */ | |
958 | ||
959 | void | |
960 | clear_last_displayed_sal (void) | |
961 | { | |
962 | last_displayed_sal_valid = 0; | |
963 | last_displayed_pspace = 0; | |
964 | last_displayed_addr = 0; | |
965 | last_displayed_symtab = 0; | |
966 | last_displayed_line = 0; | |
967 | } | |
968 | ||
969 | /* Is our record of the last sal we displayed valid? If not, | |
970 | * the get_last_displayed_* functions will return NULL or 0, as | |
971 | * appropriate. */ | |
972 | ||
973 | int | |
974 | last_displayed_sal_is_valid (void) | |
975 | { | |
976 | return last_displayed_sal_valid; | |
977 | } | |
978 | ||
979 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
980 | ||
981 | struct program_space * | |
982 | get_last_displayed_pspace (void) | |
983 | { | |
984 | if (last_displayed_sal_valid) | |
985 | return last_displayed_pspace; | |
986 | return 0; | |
987 | } | |
988 | ||
989 | /* Get the address of the last sal we displayed, if it's valid. */ | |
990 | ||
991 | CORE_ADDR | |
992 | get_last_displayed_addr (void) | |
993 | { | |
994 | if (last_displayed_sal_valid) | |
995 | return last_displayed_addr; | |
996 | return 0; | |
997 | } | |
998 | ||
999 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
1000 | ||
1001 | struct symtab* | |
1002 | get_last_displayed_symtab (void) | |
1003 | { | |
1004 | if (last_displayed_sal_valid) | |
1005 | return last_displayed_symtab; | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1010 | ||
1011 | int | |
1012 | get_last_displayed_line (void) | |
1013 | { | |
1014 | if (last_displayed_sal_valid) | |
1015 | return last_displayed_line; | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | /* Get the last sal we displayed, if it's valid. */ | |
1020 | ||
1021 | void | |
1022 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1023 | { | |
1024 | if (last_displayed_sal_valid) | |
1025 | { | |
1026 | sal->pspace = last_displayed_pspace; | |
1027 | sal->pc = last_displayed_addr; | |
1028 | sal->symtab = last_displayed_symtab; | |
1029 | sal->line = last_displayed_line; | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | sal->pspace = 0; | |
1034 | sal->pc = 0; | |
1035 | sal->symtab = 0; | |
1036 | sal->line = 0; | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | ||
e9e07ba6 | 1041 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1042 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1043 | |
f8f6f20b | 1044 | void |
55b87a52 | 1045 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1046 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1047 | { |
1048 | struct symbol *func; | |
8b93c638 | 1049 | |
f8f6f20b TJB |
1050 | *funname = NULL; |
1051 | *funlang = language_unknown; | |
e9e07ba6 JK |
1052 | if (funcp) |
1053 | *funcp = NULL; | |
c5394b80 | 1054 | |
edb3359d | 1055 | func = get_frame_function (frame); |
c906108c SS |
1056 | if (func) |
1057 | { | |
1058 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1059 | function (when we are in the first function in a file which |
1060 | is compiled without debugging symbols, the previous function | |
1061 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1062 | that is supposed to tell us where the file with debugging |
1063 | symbols ends has been truncated by ar because it is longer | |
1064 | than 15 characters). This also occurs if the user uses asm() | |
1065 | to create a function but not stabs for it (in a file compiled | |
1066 | with -g). | |
c5aa993b JM |
1067 | |
1068 | So look in the minimal symbol tables as well, and if it comes | |
1069 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1070 | I don't think this can ever cause any problems; there |
1071 | shouldn't be any minimal symbols in the middle of a function; | |
1072 | if this is ever changed many parts of GDB will need to be | |
1073 | changed (and we'll create a find_pc_minimal_function or some | |
1074 | such). */ | |
1075 | ||
7cbd4a93 | 1076 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1077 | |
1078 | /* Don't attempt to do this for inlined functions, which do not | |
1079 | have a corresponding minimal symbol. */ | |
1080 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1081 | msymbol | |
1082 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1083 | else |
1084 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1085 | |
7cbd4a93 | 1086 | if (msymbol.minsym != NULL |
77e371c0 | 1087 | && (BMSYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1088 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1089 | { | |
c906108c SS |
1090 | /* We also don't know anything about the function besides |
1091 | its address and name. */ | |
1092 | func = 0; | |
efd66ac6 TT |
1093 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1094 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1095 | } |
1096 | else | |
1097 | { | |
55b87a52 | 1098 | *funname = xstrdup (SYMBOL_PRINT_NAME (func)); |
f8f6f20b | 1099 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1100 | if (funcp) |
1101 | *funcp = func; | |
f8f6f20b | 1102 | if (*funlang == language_cplus) |
c5aa993b | 1103 | { |
033a42c2 MK |
1104 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1105 | to display the demangled name that we already have | |
1106 | stored in the symbol table, but we stored a version | |
1107 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1108 | display parameters. So remove the parameters. */ |
f8f6f20b | 1109 | char *func_only = cp_remove_params (*funname); |
433759f7 | 1110 | |
3567439c DJ |
1111 | if (func_only) |
1112 | { | |
55b87a52 | 1113 | xfree (*funname); |
f8f6f20b | 1114 | *funname = func_only; |
3567439c | 1115 | } |
c5aa993b | 1116 | } |
c906108c SS |
1117 | } |
1118 | } | |
1119 | else | |
1120 | { | |
7cbd4a93 | 1121 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1122 | CORE_ADDR pc; |
033a42c2 | 1123 | |
e3eebbd7 PA |
1124 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1125 | return; | |
1126 | ||
1127 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1128 | if (msymbol.minsym != NULL) |
c906108c | 1129 | { |
efd66ac6 TT |
1130 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1131 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1132 | } |
1133 | } | |
f8f6f20b TJB |
1134 | } |
1135 | ||
1136 | static void | |
1137 | print_frame (struct frame_info *frame, int print_level, | |
1138 | enum print_what print_what, int print_args, | |
1139 | struct symtab_and_line sal) | |
1140 | { | |
5af949e3 | 1141 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1142 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1143 | char *funname = NULL; |
f8f6f20b | 1144 | enum language funlang = language_unknown; |
f99d8bf4 | 1145 | struct ui_file *stb; |
f8f6f20b TJB |
1146 | struct cleanup *old_chain, *list_chain; |
1147 | struct value_print_options opts; | |
e9e07ba6 | 1148 | struct symbol *func; |
e3eebbd7 PA |
1149 | CORE_ADDR pc = 0; |
1150 | int pc_p; | |
1151 | ||
1152 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1153 | |
f99d8bf4 PA |
1154 | stb = mem_fileopen (); |
1155 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1156 | |
e9e07ba6 | 1157 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1158 | make_cleanup (xfree, funname); |
c906108c | 1159 | |
033a42c2 | 1160 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1161 | gdbarch, pc); |
c5394b80 | 1162 | |
666547aa | 1163 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1164 | |
0faf0076 | 1165 | if (print_level) |
8b93c638 | 1166 | { |
8b93c638 | 1167 | ui_out_text (uiout, "#"); |
0faf0076 | 1168 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1169 | frame_relative_level (frame)); |
8b93c638 | 1170 | } |
79a45b7d TT |
1171 | get_user_print_options (&opts); |
1172 | if (opts.addressprint) | |
e3eebbd7 PA |
1173 | if (!sal.symtab |
1174 | || frame_show_address (frame, sal) | |
0faf0076 | 1175 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1176 | { |
1177 | annotate_frame_address (); | |
e3eebbd7 PA |
1178 | if (pc_p) |
1179 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1180 | else | |
1181 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1182 | annotate_frame_address_end (); |
1183 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1184 | } |
1185 | annotate_frame_function_name (); | |
f99d8bf4 | 1186 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1187 | funlang, DMGL_ANSI); |
8b93c638 JM |
1188 | ui_out_field_stream (uiout, "func", stb); |
1189 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1190 | annotate_frame_args (); |
1191 | ||
8b93c638 | 1192 | ui_out_text (uiout, " ("); |
0faf0076 | 1193 | if (print_args) |
c906108c | 1194 | { |
311b5970 JK |
1195 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1196 | int numargs; | |
d493eb33 | 1197 | struct cleanup *args_list_chain; |
311b5970 | 1198 | volatile struct gdb_exception e; |
433759f7 | 1199 | |
311b5970 JK |
1200 | if (gdbarch_frame_num_args_p (gdbarch)) |
1201 | { | |
1202 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1203 | gdb_assert (numargs >= 0); | |
1204 | } | |
1205 | else | |
1206 | numargs = -1; | |
1207 | ||
68c81b54 | 1208 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
1209 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1210 | { | |
1211 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1212 | } | |
c378eb4e | 1213 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1214 | will have " that will not be properly escaped. */ |
666547aa | 1215 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1216 | do_cleanups (args_list_chain); |
c5394b80 JM |
1217 | QUIT; |
1218 | } | |
8b93c638 | 1219 | ui_out_text (uiout, ")"); |
4e04028d | 1220 | if (sal.symtab) |
c5394b80 | 1221 | { |
1b56eb55 JK |
1222 | const char *filename_display; |
1223 | ||
1224 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1225 | annotate_frame_source_begin (); |
8b93c638 JM |
1226 | ui_out_wrap_hint (uiout, " "); |
1227 | ui_out_text (uiout, " at "); | |
1228 | annotate_frame_source_file (); | |
1b56eb55 | 1229 | ui_out_field_string (uiout, "file", filename_display); |
76ff342d DJ |
1230 | if (ui_out_is_mi_like_p (uiout)) |
1231 | { | |
1232 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1233 | |
f35a17b5 | 1234 | ui_out_field_string (uiout, "fullname", fullname); |
76ff342d | 1235 | } |
8b93c638 JM |
1236 | annotate_frame_source_file_end (); |
1237 | ui_out_text (uiout, ":"); | |
1238 | annotate_frame_source_line (); | |
1239 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1240 | annotate_frame_source_end (); |
1241 | } | |
c906108c | 1242 | |
4e04028d | 1243 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1244 | { |
6c95b8df PA |
1245 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1246 | get_frame_pc (frame)); | |
4d1eb6b4 | 1247 | |
c5394b80 | 1248 | if (lib) |
c906108c | 1249 | { |
c5394b80 | 1250 | annotate_frame_where (); |
8b93c638 JM |
1251 | ui_out_wrap_hint (uiout, " "); |
1252 | ui_out_text (uiout, " from "); | |
1253 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1254 | } |
c906108c | 1255 | } |
e514a9d6 | 1256 | |
666547aa | 1257 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1258 | do_cleanups (list_chain); |
8b93c638 JM |
1259 | ui_out_text (uiout, "\n"); |
1260 | do_cleanups (old_chain); | |
c906108c SS |
1261 | } |
1262 | \f | |
c5aa993b | 1263 | |
033a42c2 MK |
1264 | /* Read a frame specification in whatever the appropriate format is |
1265 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
1266 | specification is in any way invalid (so this function never returns | |
1267 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
1268 | the default selected frame was used. */ | |
c906108c | 1269 | |
1c8831c5 AC |
1270 | static struct frame_info * |
1271 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
1272 | int *selected_frame_p) | |
c906108c | 1273 | { |
1c8831c5 AC |
1274 | int numargs; |
1275 | struct value *args[4]; | |
1276 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1277 | |
1c8831c5 AC |
1278 | if (frame_exp == NULL) |
1279 | numargs = 0; | |
1280 | else | |
c906108c | 1281 | { |
1c8831c5 AC |
1282 | numargs = 0; |
1283 | while (1) | |
c906108c | 1284 | { |
1c8831c5 AC |
1285 | char *addr_string; |
1286 | struct cleanup *cleanup; | |
1287 | const char *p; | |
1288 | ||
1289 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1290 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1291 | if (!*frame_exp) |
1292 | break; | |
c906108c | 1293 | |
1c8831c5 AC |
1294 | /* Parse the argument, extract it, save it. */ |
1295 | for (p = frame_exp; | |
1296 | *p && !isspace (*p); | |
1297 | p++); | |
1298 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1299 | frame_exp = p; |
1c8831c5 AC |
1300 | cleanup = make_cleanup (xfree, addr_string); |
1301 | ||
1302 | /* NOTE: Parse and evaluate expression, but do not use | |
1303 | functions such as parse_and_eval_long or | |
1304 | parse_and_eval_address to also extract the value. | |
1305 | Instead value_as_long and value_as_address are used. | |
1306 | This avoids problems with expressions that contain | |
1307 | side-effects. */ | |
1308 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1309 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1310 | args[numargs++] = parse_and_eval (addr_string); |
1311 | ||
1312 | do_cleanups (cleanup); | |
c906108c SS |
1313 | } |
1314 | } | |
1315 | ||
1c8831c5 AC |
1316 | /* If no args, default to the selected frame. */ |
1317 | if (numargs == 0) | |
c906108c | 1318 | { |
1c8831c5 AC |
1319 | if (selected_frame_p != NULL) |
1320 | (*selected_frame_p) = 1; | |
1321 | return get_selected_frame (message); | |
1322 | } | |
c906108c | 1323 | |
1c8831c5 AC |
1324 | /* None of the remaining use the selected frame. */ |
1325 | if (selected_frame_p != NULL) | |
98f276a0 | 1326 | (*selected_frame_p) = 0; |
c906108c | 1327 | |
1c8831c5 AC |
1328 | /* Assume the single arg[0] is an integer, and try using that to |
1329 | select a frame relative to current. */ | |
1330 | if (numargs == 1) | |
1331 | { | |
1332 | struct frame_info *fid; | |
1333 | int level = value_as_long (args[0]); | |
433759f7 | 1334 | |
1c8831c5 AC |
1335 | fid = find_relative_frame (get_current_frame (), &level); |
1336 | if (level == 0) | |
c378eb4e | 1337 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1338 | return fid; |
1339 | } | |
c906108c | 1340 | |
1c8831c5 AC |
1341 | /* Convert each value into a corresponding address. */ |
1342 | { | |
1343 | int i; | |
433759f7 | 1344 | |
1c8831c5 | 1345 | for (i = 0; i < numargs; i++) |
1e275f79 | 1346 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1347 | } |
c5aa993b | 1348 | |
1c8831c5 AC |
1349 | /* Assume that the single arg[0] is an address, use that to identify |
1350 | a frame with a matching ID. Should this also accept stack/pc or | |
1351 | stack/pc/special. */ | |
1352 | if (numargs == 1) | |
1353 | { | |
1354 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1355 | struct frame_info *fid; | |
1356 | ||
1c8831c5 AC |
1357 | /* If (s)he specifies the frame with an address, he deserves |
1358 | what (s)he gets. Still, give the highest one that matches. | |
1359 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1360 | know). */ | |
1361 | for (fid = get_current_frame (); | |
1362 | fid != NULL; | |
1363 | fid = get_prev_frame (fid)) | |
1364 | { | |
1365 | if (frame_id_eq (id, get_frame_id (fid))) | |
1366 | { | |
c7ce8faa DJ |
1367 | struct frame_info *prev_frame; |
1368 | ||
1369 | while (1) | |
1370 | { | |
1371 | prev_frame = get_prev_frame (fid); | |
1372 | if (!prev_frame | |
1373 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1374 | break; | |
1375 | fid = prev_frame; | |
1376 | } | |
1c8831c5 AC |
1377 | return fid; |
1378 | } | |
1379 | } | |
c906108c SS |
1380 | } |
1381 | ||
1c8831c5 AC |
1382 | /* We couldn't identify the frame as an existing frame, but |
1383 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1384 | if (numargs == 1) |
1385 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1386 | else if (numargs == 2) |
1387 | return create_new_frame (addrs[0], addrs[1]); | |
1388 | else | |
8a3fe4f8 | 1389 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1390 | } |
1391 | ||
9c833c82 | 1392 | static struct frame_info * |
1c8831c5 AC |
1393 | parse_frame_specification (char *frame_exp) |
1394 | { | |
1395 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
1396 | } |
1397 | ||
033a42c2 MK |
1398 | /* Print verbosely the selected frame or the frame at address |
1399 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1400 | |
1401 | static void | |
fba45db2 | 1402 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1403 | { |
1404 | struct frame_info *fi; | |
1405 | struct symtab_and_line sal; | |
1406 | struct symbol *func; | |
1407 | struct symtab *s; | |
1408 | struct frame_info *calling_frame_info; | |
167e4384 | 1409 | int numregs; |
0d5cff50 | 1410 | const char *funname = 0; |
c906108c | 1411 | enum language funlang = language_unknown; |
82de1e5b | 1412 | const char *pc_regname; |
1c8831c5 | 1413 | int selected_frame_p; |
7500260a | 1414 | struct gdbarch *gdbarch; |
3567439c | 1415 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1416 | CORE_ADDR frame_pc; |
1417 | int frame_pc_p; | |
e5e6f788 YQ |
1418 | /* Initialize it to avoid "may be used uninitialized" warning. */ |
1419 | CORE_ADDR caller_pc = 0; | |
782d47df | 1420 | volatile struct gdb_exception ex; |
c906108c | 1421 | |
1c8831c5 | 1422 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1423 | gdbarch = get_frame_arch (fi); |
c906108c | 1424 | |
82de1e5b AC |
1425 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1426 | is not a good name. */ | |
12368003 | 1427 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1428 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1429 | easily not match that of the internal value returned by |
1430 | get_frame_pc(). */ | |
12368003 | 1431 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1432 | else |
3e8c568d | 1433 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1434 | architectures will often have a hardware register called "pc", |
1435 | and that register's value, again, can easily not match | |
1436 | get_frame_pc(). */ | |
1437 | pc_regname = "pc"; | |
1438 | ||
008f8f2e | 1439 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1440 | find_frame_sal (fi, &sal); |
c906108c | 1441 | func = get_frame_function (fi); |
008f8f2e | 1442 | s = sal.symtab; |
c906108c SS |
1443 | if (func) |
1444 | { | |
3567439c | 1445 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1446 | funlang = SYMBOL_LANGUAGE (func); |
1447 | if (funlang == language_cplus) | |
1448 | { | |
3567439c DJ |
1449 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1450 | to display the demangled name that we already have | |
1451 | stored in the symbol table, but we stored a version | |
1452 | with DMGL_PARAMS turned on, and here we don't want to | |
1453 | display parameters. So remove the parameters. */ | |
1454 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1455 | |
3567439c DJ |
1456 | if (func_only) |
1457 | { | |
1458 | funname = func_only; | |
1459 | make_cleanup (xfree, func_only); | |
1460 | } | |
c5aa993b | 1461 | } |
c906108c | 1462 | } |
008f8f2e | 1463 | else if (frame_pc_p) |
c906108c | 1464 | { |
7cbd4a93 | 1465 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1466 | |
008f8f2e | 1467 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1468 | if (msymbol.minsym != NULL) |
c906108c | 1469 | { |
efd66ac6 TT |
1470 | funname = MSYMBOL_PRINT_NAME (msymbol.minsym); |
1471 | funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1472 | } |
1473 | } | |
1474 | calling_frame_info = get_prev_frame (fi); | |
1475 | ||
1c8831c5 | 1476 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1477 | { |
a3f17187 | 1478 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1479 | frame_relative_level (fi)); |
c906108c SS |
1480 | } |
1481 | else | |
1482 | { | |
a3f17187 | 1483 | printf_filtered (_("Stack frame at ")); |
c906108c | 1484 | } |
5af949e3 | 1485 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1486 | printf_filtered (":\n"); |
82de1e5b | 1487 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1488 | if (frame_pc_p) |
1489 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1490 | else | |
1491 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1492 | |
1493 | wrap_here (" "); | |
1494 | if (funname) | |
1495 | { | |
1496 | printf_filtered (" in "); | |
1497 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1498 | DMGL_ANSI | DMGL_PARAMS); | |
1499 | } | |
1500 | wrap_here (" "); | |
1501 | if (sal.symtab) | |
05cba821 JK |
1502 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1503 | sal.line); | |
c906108c SS |
1504 | puts_filtered ("; "); |
1505 | wrap_here (" "); | |
782d47df PA |
1506 | printf_filtered ("saved %s = ", pc_regname); |
1507 | ||
1508 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1509 | { | |
1510 | caller_pc = frame_unwind_caller_pc (fi); | |
1511 | } | |
1512 | if (ex.reason < 0) | |
1513 | { | |
1514 | switch (ex.error) | |
1515 | { | |
1516 | case NOT_AVAILABLE_ERROR: | |
1517 | val_print_unavailable (gdb_stdout); | |
1518 | break; | |
1519 | case OPTIMIZED_OUT_ERROR: | |
1520 | val_print_not_saved (gdb_stdout); | |
1521 | break; | |
1522 | default: | |
1523 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1524 | break; | |
1525 | } | |
1526 | } | |
008f8f2e | 1527 | else |
782d47df | 1528 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
c906108c SS |
1529 | printf_filtered ("\n"); |
1530 | ||
55feb689 DJ |
1531 | if (calling_frame_info == NULL) |
1532 | { | |
1533 | enum unwind_stop_reason reason; | |
1534 | ||
1535 | reason = get_frame_unwind_stop_reason (fi); | |
1536 | if (reason != UNWIND_NO_REASON) | |
1537 | printf_filtered (_(" Outermost frame: %s\n"), | |
1538 | frame_stop_reason_string (reason)); | |
1539 | } | |
111c6489 JK |
1540 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1541 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1542 | else if (get_frame_type (fi) == INLINE_FRAME) |
1543 | printf_filtered (" inlined into frame %d", | |
1544 | frame_relative_level (get_prev_frame (fi))); | |
1545 | else | |
c906108c SS |
1546 | { |
1547 | printf_filtered (" called by frame at "); | |
5af949e3 | 1548 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1549 | gdb_stdout); |
c906108c | 1550 | } |
75e3c1f9 | 1551 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1552 | puts_filtered (","); |
1553 | wrap_here (" "); | |
75e3c1f9 | 1554 | if (get_next_frame (fi)) |
c906108c SS |
1555 | { |
1556 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1557 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1558 | gdb_stdout); |
c906108c | 1559 | } |
75e3c1f9 | 1560 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1561 | puts_filtered ("\n"); |
55feb689 | 1562 | |
c906108c | 1563 | if (s) |
1058bca7 AC |
1564 | printf_filtered (" source language %s.\n", |
1565 | language_str (s->language)); | |
c906108c | 1566 | |
c906108c SS |
1567 | { |
1568 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1569 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1570 | /* Number of args for this frame, or -1 if unknown. */ |
1571 | int numargs; | |
1572 | ||
1573 | if (arg_list == 0) | |
1574 | printf_filtered (" Arglist at unknown address.\n"); | |
1575 | else | |
1576 | { | |
1577 | printf_filtered (" Arglist at "); | |
5af949e3 | 1578 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1579 | printf_filtered (","); |
1580 | ||
7500260a | 1581 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1582 | { |
1583 | numargs = -1; | |
1584 | puts_filtered (" args: "); | |
1585 | } | |
c906108c | 1586 | else |
983a287a | 1587 | { |
7500260a | 1588 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1589 | gdb_assert (numargs >= 0); |
1590 | if (numargs == 0) | |
1591 | puts_filtered (" no args."); | |
1592 | else if (numargs == 1) | |
1593 | puts_filtered (" 1 arg: "); | |
1594 | else | |
1595 | printf_filtered (" %d args: ", numargs); | |
1596 | } | |
c906108c SS |
1597 | print_frame_args (func, fi, numargs, gdb_stdout); |
1598 | puts_filtered ("\n"); | |
1599 | } | |
1600 | } | |
1601 | { | |
1602 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1603 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1604 | |
1605 | if (arg_list == 0) | |
1606 | printf_filtered (" Locals at unknown address,"); | |
1607 | else | |
1608 | { | |
1609 | printf_filtered (" Locals at "); | |
5af949e3 | 1610 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1611 | printf_filtered (","); |
1612 | } | |
1613 | } | |
1614 | ||
4f460812 AC |
1615 | /* Print as much information as possible on the location of all the |
1616 | registers. */ | |
1617 | { | |
1618 | enum lval_type lval; | |
1619 | int optimized; | |
0fdb4f18 | 1620 | int unavailable; |
4f460812 AC |
1621 | CORE_ADDR addr; |
1622 | int realnum; | |
1623 | int count; | |
1624 | int i; | |
1625 | int need_nl = 1; | |
1626 | ||
1627 | /* The sp is special; what's displayed isn't the save address, but | |
1628 | the value of the previous frame's sp. This is a legacy thing, | |
1629 | at one stage the frame cached the previous frame's SP instead | |
1630 | of its address, hence it was easiest to just display the cached | |
1631 | value. */ | |
7500260a | 1632 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1633 | { |
1634 | /* Find out the location of the saved stack pointer with out | |
1635 | actually evaluating it. */ | |
7500260a | 1636 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1637 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1638 | &realnum, NULL); |
0fdb4f18 | 1639 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1640 | { |
e17a4113 UW |
1641 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1642 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1643 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1644 | CORE_ADDR sp; |
433759f7 | 1645 | |
7500260a | 1646 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1647 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1648 | &realnum, value); |
af1342ab AC |
1649 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1650 | stack pointer was packed as an unsigned integer. That | |
1651 | may or may not be valid. */ | |
e17a4113 | 1652 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1653 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1654 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1655 | printf_filtered ("\n"); |
1656 | need_nl = 0; | |
c906108c | 1657 | } |
0fdb4f18 | 1658 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1659 | { |
1660 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1661 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1662 | printf_filtered ("\n"); |
1663 | need_nl = 0; | |
1664 | } | |
0fdb4f18 | 1665 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1666 | { |
1667 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1668 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1669 | need_nl = 0; |
1670 | } | |
1671 | /* else keep quiet. */ | |
1672 | } | |
1673 | ||
1674 | count = 0; | |
7500260a UW |
1675 | numregs = gdbarch_num_regs (gdbarch) |
1676 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1677 | for (i = 0; i < numregs; i++) |
7500260a UW |
1678 | if (i != gdbarch_sp_regnum (gdbarch) |
1679 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1680 | { |
1681 | /* Find out the location of the saved register without | |
1682 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1683 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1684 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1685 | /* For moment, only display registers that were saved on the |
1686 | stack. */ | |
0fdb4f18 | 1687 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1688 | { |
1689 | if (count == 0) | |
1690 | puts_filtered (" Saved registers:\n "); | |
1691 | else | |
1692 | puts_filtered (","); | |
1693 | wrap_here (" "); | |
c9f4d572 | 1694 | printf_filtered (" %s at ", |
7500260a | 1695 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1696 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1697 | count++; |
1698 | } | |
1699 | } | |
1700 | if (count || need_nl) | |
c906108c | 1701 | puts_filtered ("\n"); |
4f460812 | 1702 | } |
3567439c DJ |
1703 | |
1704 | do_cleanups (back_to); | |
c906108c SS |
1705 | } |
1706 | ||
033a42c2 MK |
1707 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1708 | frames. */ | |
c906108c SS |
1709 | |
1710 | static void | |
1e611234 PM |
1711 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1712 | int from_tty) | |
c906108c SS |
1713 | { |
1714 | struct frame_info *fi; | |
52f0bd74 AC |
1715 | int count; |
1716 | int i; | |
1717 | struct frame_info *trailing; | |
1e611234 | 1718 | int trailing_level, py_start = 0, py_end = 0; |
6dddc817 | 1719 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
c906108c SS |
1720 | |
1721 | if (!target_has_stack) | |
8a3fe4f8 | 1722 | error (_("No stack.")); |
c906108c | 1723 | |
033a42c2 MK |
1724 | /* The following code must do two things. First, it must set the |
1725 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1726 | printing. Second, it must set the variable count to the number |
1727 | of frames which we should print, or -1 if all of them. */ | |
1728 | trailing = get_current_frame (); | |
d082b2bb | 1729 | |
c906108c SS |
1730 | trailing_level = 0; |
1731 | if (count_exp) | |
1732 | { | |
bb518678 | 1733 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1734 | if (count < 0) |
1735 | { | |
1736 | struct frame_info *current; | |
1737 | ||
1e611234 | 1738 | py_start = count; |
c906108c SS |
1739 | count = -count; |
1740 | ||
1741 | current = trailing; | |
1742 | while (current && count--) | |
1743 | { | |
1744 | QUIT; | |
1745 | current = get_prev_frame (current); | |
1746 | } | |
c5aa993b | 1747 | |
033a42c2 MK |
1748 | /* Will stop when CURRENT reaches the top of the stack. |
1749 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1750 | while (current) |
1751 | { | |
1752 | QUIT; | |
1753 | trailing = get_prev_frame (trailing); | |
1754 | current = get_prev_frame (current); | |
1755 | trailing_level++; | |
1756 | } | |
c5aa993b | 1757 | |
c906108c SS |
1758 | count = -1; |
1759 | } | |
1e611234 PM |
1760 | else |
1761 | { | |
1762 | py_start = 0; | |
1763 | py_end = count; | |
1764 | } | |
c906108c SS |
1765 | } |
1766 | else | |
1e611234 PM |
1767 | { |
1768 | py_end = -1; | |
1769 | count = -1; | |
1770 | } | |
c906108c SS |
1771 | |
1772 | if (info_verbose) | |
1773 | { | |
033a42c2 MK |
1774 | /* Read in symbols for all of the frames. Need to do this in a |
1775 | separate pass so that "Reading in symbols for xxx" messages | |
1776 | don't screw up the appearance of the backtrace. Also if | |
1777 | people have strong opinions against reading symbols for | |
c5aa993b | 1778 | backtrace this may have to be an option. */ |
c906108c | 1779 | i = count; |
033a42c2 | 1780 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1781 | { |
ccefe4c4 | 1782 | CORE_ADDR pc; |
433759f7 | 1783 | |
c906108c | 1784 | QUIT; |
ccefe4c4 TT |
1785 | pc = get_frame_address_in_block (fi); |
1786 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1787 | } |
1788 | } | |
1789 | ||
1e611234 | 1790 | if (! no_filters) |
c906108c | 1791 | { |
1e611234 | 1792 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
6dddc817 | 1793 | enum ext_lang_frame_args arg_type; |
c906108c | 1794 | |
c906108c | 1795 | if (show_locals) |
1e611234 PM |
1796 | flags |= PRINT_LOCALS; |
1797 | ||
1798 | if (!strcmp (print_frame_arguments, "scalars")) | |
1799 | arg_type = CLI_SCALAR_VALUES; | |
1800 | else if (!strcmp (print_frame_arguments, "all")) | |
1801 | arg_type = CLI_ALL_VALUES; | |
1802 | else | |
1803 | arg_type = NO_VALUES; | |
1804 | ||
6dddc817 DE |
1805 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
1806 | arg_type, current_uiout, | |
1807 | py_start, py_end); | |
1e611234 | 1808 | } |
6dddc817 | 1809 | |
1e611234 PM |
1810 | /* Run the inbuilt backtrace if there are no filters registered, or |
1811 | "no-filters" has been specified from the command. */ | |
6dddc817 | 1812 | if (no_filters || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
1813 | { |
1814 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1815 | { | |
1816 | QUIT; | |
1817 | ||
1818 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1819 | means further attempts to backtrace would fail (on the other | |
1820 | hand, perhaps the code does or could be fixed to make sure | |
1821 | the frame->prev field gets set to NULL in that case). */ | |
1822 | ||
08d72866 | 1823 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1e611234 | 1824 | if (show_locals) |
d0548fa2 PM |
1825 | { |
1826 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1827 | |
d0548fa2 | 1828 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1829 | |
d0548fa2 PM |
1830 | /* print_frame_local_vars invalidates FI. */ |
1831 | fi = frame_find_by_id (frame_id); | |
1832 | if (fi == NULL) | |
1833 | { | |
1834 | trailing = NULL; | |
1835 | warning (_("Unable to restore previously selected frame.")); | |
1836 | break; | |
1837 | } | |
8f043999 | 1838 | } |
55feb689 | 1839 | |
1e611234 PM |
1840 | /* Save the last frame to check for error conditions. */ |
1841 | trailing = fi; | |
1842 | } | |
c906108c | 1843 | |
1e611234 PM |
1844 | /* If we've stopped before the end, mention that. */ |
1845 | if (fi && from_tty) | |
1846 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1847 | |
1e611234 PM |
1848 | /* If we've run out of frames, and the reason appears to be an error |
1849 | condition, print it. */ | |
1850 | if (fi == NULL && trailing != NULL) | |
1851 | { | |
1852 | enum unwind_stop_reason reason; | |
55feb689 | 1853 | |
1e611234 PM |
1854 | reason = get_frame_unwind_stop_reason (trailing); |
1855 | if (reason >= UNWIND_FIRST_ERROR) | |
1856 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1857 | frame_stop_reason_string (reason)); | |
1858 | } | |
55feb689 | 1859 | } |
c906108c SS |
1860 | } |
1861 | ||
1862 | static void | |
fba45db2 | 1863 | backtrace_command (char *arg, int from_tty) |
c906108c | 1864 | { |
5fe41fbf | 1865 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1866 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1867 | int user_arg = 0; | |
c906108c | 1868 | |
033a42c2 | 1869 | if (arg) |
c906108c | 1870 | { |
033a42c2 | 1871 | char **argv; |
c906108c SS |
1872 | int i; |
1873 | ||
d1a41061 | 1874 | argv = gdb_buildargv (arg); |
5fe41fbf | 1875 | make_cleanup_freeargv (argv); |
c906108c | 1876 | argc = 0; |
033a42c2 | 1877 | for (i = 0; argv[i]; i++) |
c5aa993b | 1878 | { |
745b8ca0 | 1879 | unsigned int j; |
c5aa993b | 1880 | |
033a42c2 | 1881 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1882 | argv[i][j] = tolower (argv[i][j]); |
1883 | ||
1e611234 PM |
1884 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1885 | no_filters = argc; | |
c5aa993b JM |
1886 | else |
1887 | { | |
1e611234 PM |
1888 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1889 | fulltrace_arg = argc; | |
1890 | else | |
1891 | { | |
1892 | user_arg++; | |
1893 | arglen += strlen (argv[i]); | |
1894 | } | |
c5aa993b | 1895 | } |
1e611234 | 1896 | argc++; |
c5aa993b | 1897 | } |
1e611234 PM |
1898 | arglen += user_arg; |
1899 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1900 | { |
033a42c2 | 1901 | if (arglen > 0) |
c5aa993b | 1902 | { |
033a42c2 | 1903 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1904 | make_cleanup (xfree, arg); |
1905 | arg[0] = 0; | |
1e611234 | 1906 | for (i = 0; i < argc; i++) |
c5aa993b | 1907 | { |
1e611234 | 1908 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1909 | { |
033a42c2 MK |
1910 | strcat (arg, argv[i]); |
1911 | strcat (arg, " "); | |
c5aa993b JM |
1912 | } |
1913 | } | |
1914 | } | |
1915 | else | |
033a42c2 | 1916 | arg = NULL; |
c5aa993b | 1917 | } |
c906108c SS |
1918 | } |
1919 | ||
1e611234 PM |
1920 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1921 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1922 | |
5fe41fbf | 1923 | do_cleanups (old_chain); |
c906108c SS |
1924 | } |
1925 | ||
1926 | static void | |
fba45db2 | 1927 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1928 | { |
1e611234 | 1929 | backtrace_command_1 (arg, 1 /* show_locals */, 0, from_tty); |
c906108c | 1930 | } |
c906108c | 1931 | \f |
c5aa993b | 1932 | |
2c58c0a9 PA |
1933 | /* Iterate over the local variables of a block B, calling CB with |
1934 | CB_DATA. */ | |
c906108c | 1935 | |
2c58c0a9 PA |
1936 | static void |
1937 | iterate_over_block_locals (struct block *b, | |
1938 | iterate_over_block_arg_local_vars_cb cb, | |
1939 | void *cb_data) | |
c906108c | 1940 | { |
8157b174 | 1941 | struct block_iterator iter; |
de4f826b | 1942 | struct symbol *sym; |
c906108c | 1943 | |
de4f826b | 1944 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1945 | { |
c906108c SS |
1946 | switch (SYMBOL_CLASS (sym)) |
1947 | { | |
1948 | case LOC_LOCAL: | |
1949 | case LOC_REGISTER: | |
1950 | case LOC_STATIC: | |
4c2df51b | 1951 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1952 | if (SYMBOL_IS_ARGUMENT (sym)) |
1953 | break; | |
4357ac6c TT |
1954 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1955 | break; | |
2c58c0a9 | 1956 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1957 | break; |
1958 | ||
1959 | default: | |
1960 | /* Ignore symbols which are not locals. */ | |
1961 | break; | |
1962 | } | |
1963 | } | |
c906108c SS |
1964 | } |
1965 | ||
65c06092 | 1966 | |
c906108c SS |
1967 | /* Same, but print labels. */ |
1968 | ||
65c06092 JB |
1969 | #if 0 |
1970 | /* Commented out, as the code using this function has also been | |
1971 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1972 | was commented out in the first place. The discussion introducing | |
1973 | this change (2007-12-04: Support lexical blocks and function bodies | |
1974 | that occupy non-contiguous address ranges) did not explain why | |
1975 | this change was made. */ | |
c906108c | 1976 | static int |
5af949e3 UW |
1977 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1978 | int *have_default, struct ui_file *stream) | |
c906108c | 1979 | { |
8157b174 | 1980 | struct block_iterator iter; |
52f0bd74 AC |
1981 | struct symbol *sym; |
1982 | int values_printed = 0; | |
c906108c | 1983 | |
de4f826b | 1984 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1985 | { |
3567439c | 1986 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1987 | { |
1988 | if (*have_default) | |
1989 | continue; | |
1990 | *have_default = 1; | |
1991 | } | |
1992 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1993 | { | |
1994 | struct symtab_and_line sal; | |
79a45b7d | 1995 | struct value_print_options opts; |
433759f7 | 1996 | |
c906108c SS |
1997 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1998 | values_printed = 1; | |
de5ad195 | 1999 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
2000 | get_user_print_options (&opts); |
2001 | if (opts.addressprint) | |
c906108c SS |
2002 | { |
2003 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
2004 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
2005 | stream); | |
c906108c SS |
2006 | } |
2007 | fprintf_filtered (stream, " in file %s, line %d\n", | |
2008 | sal.symtab->filename, sal.line); | |
2009 | } | |
2010 | } | |
033a42c2 | 2011 | |
c906108c SS |
2012 | return values_printed; |
2013 | } | |
65c06092 | 2014 | #endif |
c906108c | 2015 | |
2c58c0a9 PA |
2016 | /* Iterate over all the local variables in block B, including all its |
2017 | superblocks, stopping when the top-level block is reached. */ | |
2018 | ||
2019 | void | |
2020 | iterate_over_block_local_vars (struct block *block, | |
2021 | iterate_over_block_arg_local_vars_cb cb, | |
2022 | void *cb_data) | |
2023 | { | |
2024 | while (block) | |
2025 | { | |
2026 | iterate_over_block_locals (block, cb, cb_data); | |
2027 | /* After handling the function's top-level block, stop. Don't | |
2028 | continue to its superblock, the block of per-file | |
2029 | symbols. */ | |
2030 | if (BLOCK_FUNCTION (block)) | |
2031 | break; | |
2032 | block = BLOCK_SUPERBLOCK (block); | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | /* Data to be passed around in the calls to the locals and args | |
2037 | iterators. */ | |
c906108c | 2038 | |
2c58c0a9 PA |
2039 | struct print_variable_and_value_data |
2040 | { | |
8f043999 | 2041 | struct frame_id frame_id; |
2c58c0a9 PA |
2042 | int num_tabs; |
2043 | struct ui_file *stream; | |
2044 | int values_printed; | |
2045 | }; | |
2046 | ||
c378eb4e | 2047 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2048 | |
2049 | static void | |
2050 | do_print_variable_and_value (const char *print_name, | |
2051 | struct symbol *sym, | |
2052 | void *cb_data) | |
2053 | { | |
2054 | struct print_variable_and_value_data *p = cb_data; | |
8f043999 JK |
2055 | struct frame_info *frame; |
2056 | ||
2057 | frame = frame_find_by_id (p->frame_id); | |
2058 | if (frame == NULL) | |
2059 | { | |
2060 | warning (_("Unable to restore previously selected frame.")); | |
2061 | return; | |
2062 | } | |
2063 | ||
2064 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2065 | ||
2066 | /* print_variable_and_value invalidates FRAME. */ | |
2067 | frame = NULL; | |
2c58c0a9 | 2068 | |
2c58c0a9 PA |
2069 | p->values_printed = 1; |
2070 | } | |
c906108c | 2071 | |
8f043999 JK |
2072 | /* Print all variables from the innermost up to the function block of FRAME. |
2073 | Print them with values to STREAM indented by NUM_TABS. | |
2074 | ||
2075 | This function will invalidate FRAME. */ | |
2076 | ||
c906108c | 2077 | static void |
033a42c2 | 2078 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2079 | struct ui_file *stream) |
c906108c | 2080 | { |
2c58c0a9 PA |
2081 | struct print_variable_and_value_data cb_data; |
2082 | struct block *block; | |
1d4f5741 PA |
2083 | CORE_ADDR pc; |
2084 | ||
2085 | if (!get_frame_pc_if_available (frame, &pc)) | |
2086 | { | |
2087 | fprintf_filtered (stream, | |
2088 | _("PC unavailable, cannot determine locals.\n")); | |
2089 | return; | |
2090 | } | |
c906108c | 2091 | |
2c58c0a9 | 2092 | block = get_frame_block (frame, 0); |
c906108c SS |
2093 | if (block == 0) |
2094 | { | |
2095 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2096 | return; | |
2097 | } | |
c5aa993b | 2098 | |
8f043999 | 2099 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2100 | cb_data.num_tabs = 4 * num_tabs; |
2101 | cb_data.stream = stream; | |
2102 | cb_data.values_printed = 0; | |
2103 | ||
2104 | iterate_over_block_local_vars (block, | |
2105 | do_print_variable_and_value, | |
2106 | &cb_data); | |
c906108c | 2107 | |
8f043999 JK |
2108 | /* do_print_variable_and_value invalidates FRAME. */ |
2109 | frame = NULL; | |
2110 | ||
2c58c0a9 | 2111 | if (!cb_data.values_printed) |
033a42c2 | 2112 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2113 | } |
2114 | ||
c906108c | 2115 | void |
fba45db2 | 2116 | locals_info (char *args, int from_tty) |
c906108c | 2117 | { |
033a42c2 | 2118 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2119 | 0, gdb_stdout); |
c906108c SS |
2120 | } |
2121 | ||
2c58c0a9 PA |
2122 | /* Iterate over all the argument variables in block B. |
2123 | ||
2124 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2125 | ||
2126 | void | |
2127 | iterate_over_block_arg_vars (struct block *b, | |
2128 | iterate_over_block_arg_local_vars_cb cb, | |
2129 | void *cb_data) | |
c906108c | 2130 | { |
8157b174 | 2131 | struct block_iterator iter; |
52f0bd74 | 2132 | struct symbol *sym, *sym2; |
c906108c | 2133 | |
de4f826b | 2134 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2135 | { |
2a2d4dc3 AS |
2136 | /* Don't worry about things which aren't arguments. */ |
2137 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2138 | { |
c906108c SS |
2139 | /* We have to look up the symbol because arguments can have |
2140 | two entries (one a parameter, one a local) and the one we | |
2141 | want is the local, which lookup_symbol will find for us. | |
2142 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2143 | small structure and gcc2 when the argument type is float | |
2144 | and it is passed as a double and converted to float by | |
2145 | the prologue (in the latter case the type of the LOC_ARG | |
2146 | symbol is double and the type of the LOC_LOCAL symbol is | |
2147 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2148 | are not combined in symbol-reading. */ | |
2149 | ||
3567439c | 2150 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 2151 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 2152 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2153 | } |
2154 | } | |
2c58c0a9 PA |
2155 | } |
2156 | ||
8f043999 JK |
2157 | /* Print all argument variables of the function of FRAME. |
2158 | Print them with values to STREAM. | |
2159 | ||
2160 | This function will invalidate FRAME. */ | |
2161 | ||
2c58c0a9 PA |
2162 | static void |
2163 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2164 | { | |
2165 | struct print_variable_and_value_data cb_data; | |
2166 | struct symbol *func; | |
1d4f5741 PA |
2167 | CORE_ADDR pc; |
2168 | ||
2169 | if (!get_frame_pc_if_available (frame, &pc)) | |
2170 | { | |
2171 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2172 | return; | |
2173 | } | |
2c58c0a9 PA |
2174 | |
2175 | func = get_frame_function (frame); | |
2176 | if (func == NULL) | |
2177 | { | |
2178 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2179 | return; | |
2180 | } | |
2181 | ||
8f043999 | 2182 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2183 | cb_data.num_tabs = 0; |
2184 | cb_data.stream = gdb_stdout; | |
2185 | cb_data.values_printed = 0; | |
2186 | ||
2187 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2188 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2189 | |
8f043999 JK |
2190 | /* do_print_variable_and_value invalidates FRAME. */ |
2191 | frame = NULL; | |
2192 | ||
2c58c0a9 | 2193 | if (!cb_data.values_printed) |
033a42c2 | 2194 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2195 | } |
2196 | ||
2197 | void | |
fba45db2 | 2198 | args_info (char *ignore, int from_tty) |
c906108c | 2199 | { |
033a42c2 | 2200 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2201 | gdb_stdout); |
c906108c SS |
2202 | } |
2203 | ||
2204 | ||
2205 | static void | |
fba45db2 | 2206 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 2207 | { |
c5aa993b JM |
2208 | args_info (ignore, from_tty); |
2209 | locals_info (ignore, from_tty); | |
c906108c | 2210 | } |
c906108c | 2211 | \f |
c5aa993b | 2212 | |
033a42c2 MK |
2213 | /* Select frame FRAME. Also print the stack frame and show the source |
2214 | if this is the tui version. */ | |
bedfa57b | 2215 | static void |
033a42c2 | 2216 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2217 | { |
033a42c2 MK |
2218 | select_frame (frame); |
2219 | if (frame) | |
08d72866 | 2220 | print_stack_frame (frame, 1, SRC_AND_LOC, 1); |
c906108c | 2221 | } |
c906108c | 2222 | \f |
c906108c | 2223 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2224 | Can return zero under various legitimate circumstances. |
2225 | ||
2226 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2227 | code address within the block returned. We use this to decide | |
2228 | which macros are in scope. */ | |
c906108c SS |
2229 | |
2230 | struct block * | |
ae767bfb | 2231 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2232 | { |
d729566a | 2233 | if (!has_stack_frames ()) |
8ea051c5 PA |
2234 | return 0; |
2235 | ||
206415a3 | 2236 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2237 | } |
2238 | ||
2239 | /* Find a frame a certain number of levels away from FRAME. | |
2240 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2241 | Positive means go to earlier frames (up); negative, the reverse. | |
2242 | The int that contains the number of levels is counted toward | |
2243 | zero as the frames for those levels are found. | |
2244 | If the top or bottom frame is reached, that frame is returned, | |
2245 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2246 | how much farther the original request asked to go. */ | |
2247 | ||
2248 | struct frame_info * | |
033a42c2 | 2249 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2250 | { |
033a42c2 MK |
2251 | /* Going up is simple: just call get_prev_frame enough times or |
2252 | until the initial frame is reached. */ | |
c906108c SS |
2253 | while (*level_offset_ptr > 0) |
2254 | { | |
033a42c2 | 2255 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2256 | |
033a42c2 | 2257 | if (!prev) |
c906108c SS |
2258 | break; |
2259 | (*level_offset_ptr)--; | |
2260 | frame = prev; | |
2261 | } | |
033a42c2 | 2262 | |
c906108c | 2263 | /* Going down is just as simple. */ |
033a42c2 | 2264 | while (*level_offset_ptr < 0) |
c906108c | 2265 | { |
033a42c2 | 2266 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2267 | |
033a42c2 MK |
2268 | if (!next) |
2269 | break; | |
2270 | (*level_offset_ptr)++; | |
2271 | frame = next; | |
c906108c | 2272 | } |
033a42c2 | 2273 | |
c906108c SS |
2274 | return frame; |
2275 | } | |
2276 | ||
033a42c2 MK |
2277 | /* The "select_frame" command. With no argument this is a NOP. |
2278 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2279 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2280 | ||
2281 | See parse_frame_specification for more info on proper frame | |
2282 | expressions. */ | |
c906108c | 2283 | |
8b93c638 | 2284 | void |
fba45db2 | 2285 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2286 | { |
1c8831c5 | 2287 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
2288 | } |
2289 | ||
033a42c2 MK |
2290 | /* The "frame" command. With no argument, print the selected frame |
2291 | briefly. With an argument, behave like select_frame and then print | |
2292 | the selected frame. */ | |
c906108c | 2293 | |
033a42c2 | 2294 | static void |
fba45db2 | 2295 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
2296 | { |
2297 | select_frame_command (level_exp, from_tty); | |
08d72866 | 2298 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2299 | } |
2300 | ||
033a42c2 | 2301 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 2302 | |
7a292a7a | 2303 | static void |
fba45db2 | 2304 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 2305 | { |
08d72866 | 2306 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC, 1); |
7a292a7a | 2307 | } |
c906108c | 2308 | |
033a42c2 MK |
2309 | /* Select the frame up one or COUNT_EXP stack levels from the |
2310 | previously selected frame, and print it briefly. */ | |
c906108c | 2311 | |
c906108c | 2312 | static void |
fba45db2 | 2313 | up_silently_base (char *count_exp) |
c906108c | 2314 | { |
033a42c2 MK |
2315 | struct frame_info *frame; |
2316 | int count = 1; | |
2317 | ||
c906108c | 2318 | if (count_exp) |
bb518678 | 2319 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2320 | |
033a42c2 MK |
2321 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2322 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2323 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2324 | select_frame (frame); |
c906108c SS |
2325 | } |
2326 | ||
2327 | static void | |
fba45db2 | 2328 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2329 | { |
c5aa993b | 2330 | up_silently_base (count_exp); |
c906108c SS |
2331 | } |
2332 | ||
2333 | static void | |
fba45db2 | 2334 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2335 | { |
2336 | up_silently_base (count_exp); | |
08d72866 | 2337 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2338 | } |
2339 | ||
033a42c2 MK |
2340 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2341 | selected frame, and print it briefly. */ | |
c906108c | 2342 | |
c906108c | 2343 | static void |
fba45db2 | 2344 | down_silently_base (char *count_exp) |
c906108c | 2345 | { |
52f0bd74 | 2346 | struct frame_info *frame; |
033a42c2 | 2347 | int count = -1; |
f89b749f | 2348 | |
c906108c | 2349 | if (count_exp) |
bb518678 | 2350 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2351 | |
033a42c2 MK |
2352 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2353 | if (count != 0 && count_exp == NULL) | |
c906108c | 2354 | { |
033a42c2 MK |
2355 | /* We only do this if COUNT_EXP is not specified. That way |
2356 | "down" means to really go down (and let me know if that is | |
2357 | impossible), but "down 9999" can be used to mean go all the | |
2358 | way down without getting an error. */ | |
c906108c | 2359 | |
033a42c2 | 2360 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2361 | } |
2362 | ||
0f7d239c | 2363 | select_frame (frame); |
c906108c SS |
2364 | } |
2365 | ||
c906108c | 2366 | static void |
fba45db2 | 2367 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2368 | { |
2369 | down_silently_base (count_exp); | |
c906108c SS |
2370 | } |
2371 | ||
2372 | static void | |
fba45db2 | 2373 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2374 | { |
2375 | down_silently_base (count_exp); | |
08d72866 | 2376 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2377 | } |
2378 | \f | |
033a42c2 | 2379 | |
8b93c638 | 2380 | void |
fba45db2 | 2381 | return_command (char *retval_exp, int from_tty) |
c906108c | 2382 | { |
901900c4 MGD |
2383 | /* Initialize it just to avoid a GCC false warning. */ |
2384 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2385 | struct frame_info *thisframe; |
d80b854b | 2386 | struct gdbarch *gdbarch; |
c906108c | 2387 | struct symbol *thisfun; |
3d6d86c6 | 2388 | struct value *return_value = NULL; |
6a3a010b | 2389 | struct value *function = NULL; |
fc70c2a0 | 2390 | const char *query_prefix = ""; |
c906108c | 2391 | |
5ed92fa8 UW |
2392 | thisframe = get_selected_frame ("No selected frame."); |
2393 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2394 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2395 | |
edb3359d DJ |
2396 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2397 | error (_("Can not force return from an inlined function.")); | |
2398 | ||
fc70c2a0 AC |
2399 | /* Compute the return value. If the computation triggers an error, |
2400 | let it bail. If the return type can't be handled, set | |
2401 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2402 | message. */ | |
c906108c SS |
2403 | if (retval_exp) |
2404 | { | |
61ff14c6 JK |
2405 | struct expression *retval_expr = parse_expression (retval_exp); |
2406 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2407 | struct type *return_type = NULL; |
2408 | ||
fc70c2a0 AC |
2409 | /* Compute the return value. Should the computation fail, this |
2410 | call throws an error. */ | |
61ff14c6 | 2411 | return_value = evaluate_expression (retval_expr); |
c906108c | 2412 | |
fc70c2a0 AC |
2413 | /* Cast return value to the return type of the function. Should |
2414 | the cast fail, this call throws an error. */ | |
c906108c SS |
2415 | if (thisfun != NULL) |
2416 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2417 | if (return_type == NULL) | |
61ff14c6 | 2418 | { |
9eaf6705 TT |
2419 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2420 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2421 | error (_("Return value type not available for selected " |
2422 | "stack frame.\n" | |
2423 | "Please use an explicit cast of the value to return.")); | |
2424 | return_type = value_type (return_value); | |
2425 | } | |
2426 | do_cleanups (old_chain); | |
3e9a183c | 2427 | CHECK_TYPEDEF (return_type); |
c906108c SS |
2428 | return_value = value_cast (return_type, return_value); |
2429 | ||
fc70c2a0 AC |
2430 | /* Make sure the value is fully evaluated. It may live in the |
2431 | stack frame we're about to pop. */ | |
d69fe07e | 2432 | if (value_lazy (return_value)) |
c906108c | 2433 | value_fetch_lazy (return_value); |
c906108c | 2434 | |
6a3a010b MR |
2435 | if (thisfun != NULL) |
2436 | function = read_var_value (thisfun, thisframe); | |
2437 | ||
bbfdfe1c | 2438 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2439 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2440 | /* If the return-type is "void", don't try to find the | |
2441 | return-value's location. However, do still evaluate the | |
2442 | return expression so that, even when the expression result | |
2443 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2444 | occur. */ |
667e784f | 2445 | return_value = NULL; |
bbfdfe1c | 2446 | else if (thisfun != NULL) |
fc70c2a0 | 2447 | { |
bbfdfe1c DM |
2448 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2449 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2450 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2451 | { | |
2452 | query_prefix = "The location at which to store the " | |
2453 | "function's return value is unknown.\n" | |
2454 | "If you continue, the return value " | |
2455 | "that you specified will be ignored.\n"; | |
2456 | return_value = NULL; | |
2457 | } | |
fc70c2a0 | 2458 | } |
c906108c SS |
2459 | } |
2460 | ||
fc70c2a0 AC |
2461 | /* Does an interactive user really want to do this? Include |
2462 | information, such as how well GDB can handle the return value, in | |
2463 | the query message. */ | |
2464 | if (from_tty) | |
2465 | { | |
2466 | int confirmed; | |
433759f7 | 2467 | |
fc70c2a0 | 2468 | if (thisfun == NULL) |
e2e0b3e5 | 2469 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2470 | query_prefix); |
2471 | else | |
e2e0b3e5 | 2472 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2473 | SYMBOL_PRINT_NAME (thisfun)); |
2474 | if (!confirmed) | |
8a3fe4f8 | 2475 | error (_("Not confirmed")); |
fc70c2a0 | 2476 | } |
c906108c | 2477 | |
a45ae3ed UW |
2478 | /* Discard the selected frame and all frames inner-to it. */ |
2479 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2480 | |
a1f5b845 | 2481 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2482 | if (return_value != NULL) |
2483 | { | |
df407dfe | 2484 | struct type *return_type = value_type (return_value); |
7500260a | 2485 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2486 | |
bbfdfe1c DM |
2487 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2488 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2489 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2490 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2491 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2492 | } |
1a2aab69 | 2493 | |
fc70c2a0 AC |
2494 | /* If we are at the end of a call dummy now, pop the dummy frame |
2495 | too. */ | |
e8bcf01f AC |
2496 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2497 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2498 | |
c906108c | 2499 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2500 | if (from_tty) |
2501 | frame_command ("0", 1); | |
2502 | else | |
2503 | select_frame_command ("0", 0); | |
2504 | } | |
2505 | ||
033a42c2 | 2506 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2507 | is within the current stack frame. */ |
c906108c SS |
2508 | |
2509 | struct function_bounds | |
2510 | { | |
2511 | CORE_ADDR low, high; | |
2512 | }; | |
2513 | ||
2514 | static void | |
fba45db2 | 2515 | func_command (char *arg, int from_tty) |
c906108c | 2516 | { |
033a42c2 | 2517 | struct frame_info *frame; |
c906108c SS |
2518 | int found = 0; |
2519 | struct symtabs_and_lines sals; | |
2520 | int i; | |
2521 | int level = 1; | |
033a42c2 | 2522 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2523 | struct cleanup *cleanups; |
c906108c | 2524 | |
033a42c2 | 2525 | if (arg != NULL) |
c906108c SS |
2526 | return; |
2527 | ||
033a42c2 | 2528 | frame = parse_frame_specification ("0"); |
39cf75f7 | 2529 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2530 | cleanups = make_cleanup (xfree, sals.sals); |
c906108c SS |
2531 | func_bounds = (struct function_bounds *) xmalloc ( |
2532 | sizeof (struct function_bounds) * sals.nelts); | |
f8eba3c6 | 2533 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2534 | for (i = 0; (i < sals.nelts && !found); i++) |
2535 | { | |
f8eba3c6 TT |
2536 | if (sals.sals[i].pspace != current_program_space) |
2537 | func_bounds[i].low = func_bounds[i].high = 0; | |
2538 | else if (sals.sals[i].pc == 0 | |
2539 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2540 | &func_bounds[i].low, | |
2541 | &func_bounds[i].high) == 0) | |
c906108c | 2542 | { |
033a42c2 | 2543 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2544 | } |
2545 | } | |
2546 | ||
2547 | do | |
2548 | { | |
2549 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2550 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2551 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2552 | if (!found) |
2553 | { | |
2554 | level = 1; | |
033a42c2 | 2555 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2556 | } |
2557 | } | |
2558 | while (!found && level == 0); | |
2559 | ||
f8eba3c6 | 2560 | do_cleanups (cleanups); |
c906108c SS |
2561 | |
2562 | if (!found) | |
a3f17187 | 2563 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2564 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2565 | select_and_print_frame (frame); |
c906108c SS |
2566 | } |
2567 | ||
2568 | /* Gets the language of the current frame. */ | |
2569 | ||
2570 | enum language | |
fba45db2 | 2571 | get_frame_language (void) |
c906108c | 2572 | { |
206415a3 | 2573 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2574 | |
033a42c2 | 2575 | if (frame) |
c906108c | 2576 | { |
e3eebbd7 PA |
2577 | volatile struct gdb_exception ex; |
2578 | CORE_ADDR pc = 0; | |
2579 | struct symtab *s; | |
2580 | ||
7ae4c3a5 | 2581 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2582 | associated symtab. To retrieve this symtab, we use the frame |
2583 | PC. However we cannot use the frame PC as is, because it | |
2584 | usually points to the instruction following the "call", which | |
2585 | is sometimes the first instruction of another function. So | |
2586 | we rely on get_frame_address_in_block(), it provides us with | |
2587 | a PC that is guaranteed to be inside the frame's code | |
2588 | block. */ | |
033a42c2 | 2589 | |
e3eebbd7 PA |
2590 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2591 | { | |
2592 | pc = get_frame_address_in_block (frame); | |
2593 | } | |
2594 | if (ex.reason < 0) | |
2595 | { | |
2596 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2597 | throw_exception (ex); | |
2598 | } | |
2599 | else | |
2600 | { | |
2601 | s = find_pc_symtab (pc); | |
2602 | if (s != NULL) | |
2603 | return s->language; | |
2604 | } | |
c906108c | 2605 | } |
c906108c | 2606 | |
033a42c2 | 2607 | return language_unknown; |
c906108c SS |
2608 | } |
2609 | \f | |
033a42c2 MK |
2610 | |
2611 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2612 | void _initialize_stack (void); | |
2613 | ||
c906108c | 2614 | void |
fba45db2 | 2615 | _initialize_stack (void) |
c906108c | 2616 | { |
1bedd215 AC |
2617 | add_com ("return", class_stack, return_command, _("\ |
2618 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2619 | Control remains in the debugger, but when you continue\n\ |
2620 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2621 | If an argument is given, it is an expression for the value to return.")); |
2622 | ||
2623 | add_com ("up", class_stack, up_command, _("\ | |
2624 | Select and print stack frame that called this one.\n\ | |
2625 | An argument says how many frames up to go.")); | |
2626 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2627 | Same as the `up' command, but does not print anything.\n\ | |
2628 | This is useful in command scripts.")); | |
2629 | ||
2630 | add_com ("down", class_stack, down_command, _("\ | |
2631 | Select and print stack frame called by this one.\n\ | |
2632 | An argument says how many frames down to go.")); | |
c906108c SS |
2633 | add_com_alias ("do", "down", class_stack, 1); |
2634 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2635 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2636 | Same as the `down' command, but does not print anything.\n\ | |
2637 | This is useful in command scripts.")); | |
c906108c | 2638 | |
1bedd215 | 2639 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2640 | Select and print a stack frame.\nWith no argument, \ |
2641 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2642 | An argument specifies the frame to select.\n\ |
2643 | It can be a stack frame number or the address of the frame.\n\ | |
2644 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2645 | a command file or a user-defined command.")); |
c906108c SS |
2646 | |
2647 | add_com_alias ("f", "frame", class_stack, 1); | |
2648 | ||
2649 | if (xdb_commands) | |
2650 | { | |
c5aa993b | 2651 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2652 | _("Print the current stack frame.\n")); |
c906108c SS |
2653 | add_com_alias ("V", "frame", class_stack, 1); |
2654 | } | |
1bedd215 AC |
2655 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2656 | Select a stack frame without printing anything.\n\ | |
c906108c | 2657 | An argument specifies the frame to select.\n\ |
1bedd215 | 2658 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2659 | |
1bedd215 AC |
2660 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2661 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2662 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2663 | 'full' qualifier also prints the values of the local variables.\n\ |
2664 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2665 | on this backtrace.\n")); | |
c906108c SS |
2666 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2667 | if (xdb_commands) | |
2668 | { | |
2669 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2670 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2671 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2672 | and the values of the local variables.\n\ |
2673 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2674 | Usage: T <count>\n")); |
c906108c SS |
2675 | } |
2676 | ||
2677 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2678 | add_info ("stack", backtrace_command, | |
1bedd215 | 2679 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2680 | add_info_alias ("s", "stack", 1); |
2681 | add_info ("frame", frame_info, | |
1bedd215 | 2682 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2683 | add_info_alias ("f", "frame", 1); |
2684 | add_info ("locals", locals_info, | |
1bedd215 | 2685 | _("Local variables of current stack frame.")); |
c906108c | 2686 | add_info ("args", args_info, |
1bedd215 | 2687 | _("Argument variables of current stack frame.")); |
c906108c | 2688 | if (xdb_commands) |
c5aa993b | 2689 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2690 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2691 | |
2692 | if (dbx_commands) | |
1bedd215 AC |
2693 | add_com ("func", class_stack, func_command, _("\ |
2694 | Select the stack frame that contains <func>.\n\ | |
2695 | Usage: func <name>\n")); | |
c906108c | 2696 | |
88408340 JB |
2697 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2698 | print_frame_arguments_choices, &print_frame_arguments, | |
2699 | _("Set printing of non-scalar frame arguments"), | |
2700 | _("Show printing of non-scalar frame arguments"), | |
2701 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2702 | ||
e7045703 DE |
2703 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2704 | &print_raw_frame_arguments, _("\ | |
2705 | Set whether to print frame arguments in raw form."), _("\ | |
2706 | Show whether to print frame arguments in raw form."), _("\ | |
2707 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2708 | pretty-printers for that value."), | |
2709 | NULL, NULL, | |
2710 | &setprintrawlist, &showprintrawlist); | |
2711 | ||
30c33a9f HZ |
2712 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2713 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2714 | Set whether to disassemble next source line or insn when execution stops."), |
2715 | _("\ | |
2716 | Show whether to disassemble next source line or insn when execution stops."), | |
2717 | _("\ | |
80a0ea0f EZ |
2718 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2719 | to displaying the source line itself. If the next source line cannot\n\ | |
2720 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2721 | will display disassembly of next instruction instead of showing the\n\ | |
2722 | source line.\n\ | |
2723 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2724 | cannot be displayed.\n\ | |
2725 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2726 | source line."), | |
30c33a9f HZ |
2727 | NULL, |
2728 | show_disassemble_next_line, | |
2729 | &setlist, &showlist); | |
a362e3d3 | 2730 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2731 | |
2732 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2733 | print_entry_values_choices, &print_entry_values, | |
2734 | _("Set printing of function arguments at function " | |
2735 | "entry"), | |
2736 | _("Show printing of function arguments at function " | |
2737 | "entry"), | |
2738 | _("\ | |
2739 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2740 | in addition to their current values. This option tells GDB whether\n\ | |
2741 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2742 | or both. Note that one or both of these values may be <optimized out>."), | |
2743 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2744 | } |