Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 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" |
c906108c | 50 | |
033a42c2 MK |
51 | #include "gdb_assert.h" |
52 | #include <ctype.h> | |
53 | #include "gdb_string.h" | |
c906108c | 54 | |
ccefe4c4 | 55 | #include "symfile.h" |
1e611234 | 56 | #include "python/python.h" |
ccefe4c4 | 57 | |
9a4105ab | 58 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 59 | |
2421fe6f | 60 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
61 | of this setting. */ |
62 | ||
40478521 | 63 | static const char *const print_frame_arguments_choices[] = |
88408340 | 64 | {"all", "scalars", "none", NULL}; |
476f7b68 | 65 | static const char *print_frame_arguments = "scalars"; |
88408340 | 66 | |
e7045703 DE |
67 | /* If non-zero, don't invoke pretty-printers for frame arguments. */ |
68 | static int print_raw_frame_arguments; | |
69 | ||
e18b2753 JK |
70 | /* The possible choices of "set print entry-values", and the value |
71 | of this setting. */ | |
72 | ||
73 | const char print_entry_values_no[] = "no"; | |
74 | const char print_entry_values_only[] = "only"; | |
75 | const char print_entry_values_preferred[] = "preferred"; | |
76 | const char print_entry_values_if_needed[] = "if-needed"; | |
77 | const char print_entry_values_both[] = "both"; | |
78 | const char print_entry_values_compact[] = "compact"; | |
79 | const char print_entry_values_default[] = "default"; | |
40478521 | 80 | static const char *const print_entry_values_choices[] = |
e18b2753 JK |
81 | { |
82 | print_entry_values_no, | |
83 | print_entry_values_only, | |
84 | print_entry_values_preferred, | |
85 | print_entry_values_if_needed, | |
86 | print_entry_values_both, | |
87 | print_entry_values_compact, | |
88 | print_entry_values_default, | |
89 | NULL | |
90 | }; | |
91 | const char *print_entry_values = print_entry_values_default; | |
92 | ||
c378eb4e | 93 | /* Prototypes for local functions. */ |
c906108c | 94 | |
d9fcf2fb JM |
95 | static void print_frame_local_vars (struct frame_info *, int, |
96 | struct ui_file *); | |
c906108c | 97 | |
033a42c2 MK |
98 | static void print_frame (struct frame_info *frame, int print_level, |
99 | enum print_what print_what, int print_args, | |
c5394b80 JM |
100 | struct symtab_and_line sal); |
101 | ||
1bfeeb0f JL |
102 | static void set_last_displayed_sal (int valid, |
103 | struct program_space *pspace, | |
104 | CORE_ADDR addr, | |
105 | struct symtab *symtab, | |
106 | int line); | |
107 | ||
c906108c SS |
108 | /* Zero means do things normally; we are interacting directly with the |
109 | user. One means print the full filename and linenumber when a | |
110 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
111 | parse. Two means print similar annotations, but in many more | |
112 | cases and in a slightly different syntax. */ | |
113 | ||
114 | int annotation_level = 0; | |
1bfeeb0f JL |
115 | |
116 | /* These variables hold the last symtab and line we displayed to the user. | |
117 | * This is where we insert a breakpoint or a skiplist entry by default. */ | |
118 | static int last_displayed_sal_valid = 0; | |
119 | static struct program_space *last_displayed_pspace = 0; | |
120 | static CORE_ADDR last_displayed_addr = 0; | |
121 | static struct symtab *last_displayed_symtab = 0; | |
122 | static int last_displayed_line = 0; | |
c906108c | 123 | \f |
c5aa993b | 124 | |
edb3359d DJ |
125 | /* Return 1 if we should display the address in addition to the location, |
126 | because we are in the middle of a statement. */ | |
127 | ||
128 | static int | |
129 | frame_show_address (struct frame_info *frame, | |
130 | struct symtab_and_line sal) | |
131 | { | |
132 | /* If there is a line number, but no PC, then there is no location | |
133 | information associated with this sal. The only way that should | |
134 | happen is for the call sites of inlined functions (SAL comes from | |
135 | find_frame_sal). Otherwise, we would have some PC range if the | |
136 | SAL came from a line table. */ | |
137 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
138 | { | |
139 | if (get_next_frame (frame) == NULL) | |
140 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
141 | else | |
142 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | return get_frame_pc (frame) != sal.pc; | |
147 | } | |
148 | ||
033a42c2 | 149 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
150 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
151 | relative level, function name, argument list, and file name and | |
152 | line number. If the frame's PC is not at the beginning of the | |
153 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
154 | |
155 | void | |
033a42c2 | 156 | print_stack_frame (struct frame_info *frame, int print_level, |
08d72866 PA |
157 | enum print_what print_what, |
158 | int set_current_sal) | |
c906108c | 159 | { |
311b5970 | 160 | volatile struct gdb_exception e; |
c906108c | 161 | |
aaf9e9fd | 162 | /* For mi, alway print location and address. */ |
79a45e25 | 163 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 164 | print_what = LOC_AND_ADDRESS; |
c906108c | 165 | |
311b5970 JK |
166 | TRY_CATCH (e, RETURN_MASK_ERROR) |
167 | { | |
168 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); | |
c906108c | 169 | |
08d72866 PA |
170 | print_frame_info (frame, print_level, print_what, 1 /* print_args */, |
171 | set_current_sal); | |
172 | if (set_current_sal) | |
173 | set_current_sal_from_frame (frame, center); | |
311b5970 JK |
174 | } |
175 | } | |
c906108c | 176 | |
033a42c2 MK |
177 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
178 | the offset of the first nameless argument, and NUM is the number of | |
179 | nameless arguments to print. FIRST is nonzero if this is the first | |
180 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
181 | |
182 | static void | |
033a42c2 | 183 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
184 | int first, struct ui_file *stream) |
185 | { | |
e17a4113 UW |
186 | struct gdbarch *gdbarch = get_frame_arch (frame); |
187 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
188 | int i; |
189 | CORE_ADDR argsaddr; | |
190 | long arg_value; | |
191 | ||
192 | for (i = 0; i < num; i++) | |
193 | { | |
194 | QUIT; | |
033a42c2 | 195 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
196 | if (!argsaddr) |
197 | return; | |
e17a4113 UW |
198 | arg_value = read_memory_integer (argsaddr + start, |
199 | sizeof (int), byte_order); | |
8d3b0994 AC |
200 | if (!first) |
201 | fprintf_filtered (stream, ", "); | |
202 | fprintf_filtered (stream, "%ld", arg_value); | |
203 | first = 0; | |
204 | start += sizeof (int); | |
205 | } | |
206 | } | |
207 | ||
93d86cef JK |
208 | /* Print single argument of inferior function. ARG must be already |
209 | read in. | |
210 | ||
211 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
212 | iff it should not be printed accoring to user settings. */ | |
213 | ||
214 | static void | |
215 | print_frame_arg (const struct frame_arg *arg) | |
216 | { | |
217 | struct ui_out *uiout = current_uiout; | |
218 | volatile struct gdb_exception except; | |
219 | struct cleanup *old_chain; | |
f99d8bf4 | 220 | struct ui_file *stb; |
93d86cef | 221 | |
f99d8bf4 PA |
222 | stb = mem_fileopen (); |
223 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
224 | |
225 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
226 | gdb_assert (arg->entry_kind == print_entry_values_no |
227 | || arg->entry_kind == print_entry_values_only | |
228 | || (!ui_out_is_mi_like_p (uiout) | |
229 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
230 | |
231 | annotate_arg_begin (); | |
232 | ||
233 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
f99d8bf4 | 234 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 235 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
236 | if (arg->entry_kind == print_entry_values_compact) |
237 | { | |
238 | /* It is OK to provide invalid MI-like stream as with | |
239 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
f99d8bf4 | 240 | fputs_filtered ("=", stb); |
e18b2753 | 241 | |
f99d8bf4 | 242 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
243 | SYMBOL_LANGUAGE (arg->sym), |
244 | DMGL_PARAMS | DMGL_ANSI); | |
245 | } | |
246 | if (arg->entry_kind == print_entry_values_only | |
247 | || arg->entry_kind == print_entry_values_compact) | |
f99d8bf4 | 248 | fputs_filtered ("@entry", stb); |
93d86cef JK |
249 | ui_out_field_stream (uiout, "name", stb); |
250 | annotate_arg_name_end (); | |
251 | ui_out_text (uiout, "="); | |
252 | ||
253 | if (!arg->val && !arg->error) | |
254 | ui_out_text (uiout, "..."); | |
255 | else | |
256 | { | |
257 | if (arg->error) | |
258 | except.message = arg->error; | |
259 | else | |
260 | { | |
261 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
262 | ||
263 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
264 | { | |
265 | const struct language_defn *language; | |
266 | struct value_print_options opts; | |
267 | ||
268 | /* Avoid value_print because it will deref ref parameters. We | |
269 | just want to print their addresses. Print ??? for args whose | |
270 | address we do not know. We pass 2 as "recurse" to val_print | |
271 | because our standard indentation here is 4 spaces, and | |
272 | val_print indents 2 for each recurse. */ | |
273 | ||
274 | annotate_arg_value (value_type (arg->val)); | |
275 | ||
276 | /* Use the appropriate language to display our symbol, unless the | |
277 | user forced the language to a specific language. */ | |
278 | if (language_mode == language_mode_auto) | |
279 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
280 | else | |
281 | language = current_language; | |
282 | ||
2a998fc0 | 283 | get_no_prettyformat_print_options (&opts); |
3343315b | 284 | opts.deref_ref = 1; |
e7045703 | 285 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
286 | |
287 | /* True in "summary" mode, false otherwise. */ | |
288 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
289 | ||
f99d8bf4 | 290 | common_val_print (arg->val, stb, 2, &opts, language); |
93d86cef JK |
291 | } |
292 | } | |
293 | if (except.message) | |
f99d8bf4 | 294 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
93d86cef JK |
295 | except.message); |
296 | } | |
297 | ||
298 | ui_out_field_stream (uiout, "value", stb); | |
299 | ||
f99d8bf4 | 300 | /* Also invoke ui_out_tuple_end. */ |
93d86cef JK |
301 | do_cleanups (old_chain); |
302 | ||
303 | annotate_arg_end (); | |
304 | } | |
305 | ||
82a0a75f YQ |
306 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
307 | responsible for xfree of ARGP->ERROR. This function never throws an | |
308 | exception. */ | |
309 | ||
310 | void | |
311 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
312 | struct frame_arg *argp) | |
313 | { | |
314 | volatile struct gdb_exception except; | |
315 | struct value *val = NULL; | |
316 | ||
317 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
318 | { | |
319 | val = read_var_value (sym, frame); | |
320 | } | |
321 | ||
322 | argp->error = (val == NULL) ? xstrdup (except.message) : NULL; | |
323 | argp->sym = sym; | |
324 | argp->val = val; | |
325 | } | |
326 | ||
93d86cef JK |
327 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is |
328 | responsible for xfree of ARGP->ERROR. This function never throws an | |
329 | exception. */ | |
330 | ||
331 | void | |
332 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 333 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 334 | { |
e18b2753 JK |
335 | struct value *val = NULL, *entryval = NULL; |
336 | char *val_error = NULL, *entryval_error = NULL; | |
337 | int val_equal = 0; | |
93d86cef JK |
338 | volatile struct gdb_exception except; |
339 | ||
e18b2753 JK |
340 | if (print_entry_values != print_entry_values_only |
341 | && print_entry_values != print_entry_values_preferred) | |
342 | { | |
343 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
344 | { | |
345 | val = read_var_value (sym, frame); | |
346 | } | |
347 | if (!val) | |
348 | { | |
349 | val_error = alloca (strlen (except.message) + 1); | |
350 | strcpy (val_error, except.message); | |
351 | } | |
352 | } | |
353 | ||
24d6c2a0 TT |
354 | if (SYMBOL_COMPUTED_OPS (sym) != NULL |
355 | && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL | |
e18b2753 JK |
356 | && print_entry_values != print_entry_values_no |
357 | && (print_entry_values != print_entry_values_if_needed | |
358 | || !val || value_optimized_out (val))) | |
359 | { | |
360 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
361 | { | |
362 | const struct symbol_computed_ops *ops; | |
363 | ||
364 | ops = SYMBOL_COMPUTED_OPS (sym); | |
365 | entryval = ops->read_variable_at_entry (sym, frame); | |
366 | } | |
367 | if (!entryval) | |
368 | { | |
369 | entryval_error = alloca (strlen (except.message) + 1); | |
370 | strcpy (entryval_error, except.message); | |
371 | } | |
372 | ||
373 | if (except.error == NO_ENTRY_VALUE_ERROR | |
374 | || (entryval && value_optimized_out (entryval))) | |
375 | { | |
376 | entryval = NULL; | |
377 | entryval_error = NULL; | |
378 | } | |
379 | ||
380 | if (print_entry_values == print_entry_values_compact | |
381 | || print_entry_values == print_entry_values_default) | |
382 | { | |
383 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
384 | ||
385 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
386 | { | |
744a8059 | 387 | struct type *type = value_type (val); |
e18b2753 | 388 | |
e18b2753 | 389 | if (!value_optimized_out (val) |
744a8059 SP |
390 | && value_available_contents_eq (val, 0, entryval, 0, |
391 | TYPE_LENGTH (type))) | |
e18b2753 | 392 | { |
509f0fd9 JK |
393 | /* Initialize it just to avoid a GCC false warning. */ |
394 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
395 | |
396 | /* DW_AT_GNU_call_site_value does match with the current | |
397 | value. If it is a reference still try to verify if | |
398 | dereferenced DW_AT_GNU_call_site_data_value does not | |
399 | differ. */ | |
400 | ||
401 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
402 | { | |
744a8059 | 403 | struct type *type_deref; |
a471c594 JK |
404 | |
405 | val_deref = coerce_ref (val); | |
406 | if (value_lazy (val_deref)) | |
407 | value_fetch_lazy (val_deref); | |
744a8059 | 408 | type_deref = value_type (val_deref); |
a471c594 JK |
409 | |
410 | entryval_deref = coerce_ref (entryval); | |
411 | if (value_lazy (entryval_deref)) | |
412 | value_fetch_lazy (entryval_deref); | |
413 | ||
414 | /* If the reference addresses match but dereferenced | |
415 | content does not match print them. */ | |
416 | if (val != val_deref | |
417 | && value_available_contents_eq (val_deref, 0, | |
418 | entryval_deref, 0, | |
744a8059 | 419 | TYPE_LENGTH (type_deref))) |
a471c594 JK |
420 | val_equal = 1; |
421 | } | |
422 | ||
423 | /* Value was not a reference; and its content matches. */ | |
424 | if (val == val_deref) | |
425 | val_equal = 1; | |
426 | /* If the dereferenced content could not be fetched do not | |
427 | display anything. */ | |
428 | else if (except.error == NO_ENTRY_VALUE_ERROR) | |
429 | val_equal = 1; | |
430 | else if (except.message) | |
431 | { | |
432 | entryval_error = alloca (strlen (except.message) + 1); | |
433 | strcpy (entryval_error, except.message); | |
434 | } | |
435 | ||
436 | if (val_equal) | |
437 | entryval = NULL; | |
e18b2753 JK |
438 | } |
439 | } | |
440 | ||
441 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
442 | in MI mode. */ | |
443 | ||
444 | if (val_error && entryval_error | |
445 | && strcmp (val_error, entryval_error) == 0) | |
446 | { | |
447 | entryval_error = NULL; | |
448 | ||
449 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
450 | the entry value even if no entry values are present in the | |
451 | inferior. */ | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
456 | if (entryval == NULL) | |
93d86cef | 457 | { |
e18b2753 JK |
458 | if (print_entry_values == print_entry_values_preferred) |
459 | { | |
460 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
461 | { | |
462 | val = read_var_value (sym, frame); | |
463 | } | |
464 | if (!val) | |
465 | { | |
466 | val_error = alloca (strlen (except.message) + 1); | |
467 | strcpy (val_error, except.message); | |
468 | } | |
469 | } | |
470 | if (print_entry_values == print_entry_values_only | |
471 | || print_entry_values == print_entry_values_both | |
472 | || (print_entry_values == print_entry_values_preferred | |
473 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
474 | { |
475 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
476 | entryval_error = NULL; | |
477 | } | |
93d86cef | 478 | } |
e18b2753 JK |
479 | if ((print_entry_values == print_entry_values_compact |
480 | || print_entry_values == print_entry_values_if_needed | |
481 | || print_entry_values == print_entry_values_preferred) | |
482 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 483 | { |
e18b2753 JK |
484 | val = NULL; |
485 | val_error = NULL; | |
93d86cef JK |
486 | } |
487 | ||
488 | argp->sym = sym; | |
489 | argp->val = val; | |
490 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
491 | if (!val && !val_error) |
492 | argp->entry_kind = print_entry_values_only; | |
493 | else if ((print_entry_values == print_entry_values_compact | |
494 | || print_entry_values == print_entry_values_default) && val_equal) | |
495 | { | |
496 | argp->entry_kind = print_entry_values_compact; | |
497 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
498 | } | |
499 | else | |
500 | argp->entry_kind = print_entry_values_no; | |
501 | ||
502 | entryargp->sym = sym; | |
503 | entryargp->val = entryval; | |
504 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
505 | if (!entryval && !entryval_error) | |
506 | entryargp->entry_kind = print_entry_values_no; | |
507 | else | |
508 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
509 | } |
510 | ||
033a42c2 MK |
511 | /* Print the arguments of frame FRAME on STREAM, given the function |
512 | FUNC running in that frame (as a symbol), where NUM is the number | |
513 | of arguments according to the stack frame (or -1 if the number of | |
514 | arguments is unknown). */ | |
8d3b0994 | 515 | |
e3168615 | 516 | /* Note that currently the "number of arguments according to the |
033a42c2 | 517 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 518 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
519 | |
520 | static void | |
033a42c2 MK |
521 | print_frame_args (struct symbol *func, struct frame_info *frame, |
522 | int num, struct ui_file *stream) | |
8d3b0994 | 523 | { |
79a45e25 | 524 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 525 | int first = 1; |
8d3b0994 | 526 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
527 | at the highest offset, or -1 if we haven't come to a stack |
528 | argument yet. */ | |
8d3b0994 | 529 | long highest_offset = -1; |
8d3b0994 AC |
530 | /* Number of ints of arguments that we have printed so far. */ |
531 | int args_printed = 0; | |
22e048c9 | 532 | struct cleanup *old_chain; |
f99d8bf4 | 533 | struct ui_file *stb; |
a6bac58e TT |
534 | /* True if we should print arguments, false otherwise. */ |
535 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 536 | |
f99d8bf4 PA |
537 | stb = mem_fileopen (); |
538 | old_chain = make_cleanup_ui_file_delete (stb); | |
8d3b0994 AC |
539 | |
540 | if (func) | |
541 | { | |
033a42c2 | 542 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 543 | struct block_iterator iter; |
033a42c2 | 544 | struct symbol *sym; |
8d3b0994 | 545 | |
de4f826b | 546 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 547 | { |
e18b2753 | 548 | struct frame_arg arg, entryarg; |
93d86cef | 549 | |
8d3b0994 AC |
550 | QUIT; |
551 | ||
552 | /* Keep track of the highest stack argument offset seen, and | |
553 | skip over any kinds of symbols we don't care about. */ | |
554 | ||
2a2d4dc3 AS |
555 | if (!SYMBOL_IS_ARGUMENT (sym)) |
556 | continue; | |
557 | ||
8d3b0994 AC |
558 | switch (SYMBOL_CLASS (sym)) |
559 | { | |
560 | case LOC_ARG: | |
561 | case LOC_REF_ARG: | |
562 | { | |
563 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 564 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
565 | |
566 | /* Compute address of next argument by adding the size of | |
567 | this argument and rounding to an int boundary. */ | |
568 | current_offset = | |
569 | ((current_offset + arg_size + sizeof (int) - 1) | |
570 | & ~(sizeof (int) - 1)); | |
571 | ||
033a42c2 MK |
572 | /* If this is the highest offset seen yet, set |
573 | highest_offset. */ | |
8d3b0994 AC |
574 | if (highest_offset == -1 |
575 | || (current_offset > highest_offset)) | |
576 | highest_offset = current_offset; | |
577 | ||
033a42c2 MK |
578 | /* Add the number of ints we're about to print to |
579 | args_printed. */ | |
8d3b0994 AC |
580 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
581 | } | |
582 | ||
033a42c2 MK |
583 | /* We care about types of symbols, but don't need to |
584 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 585 | case LOC_REGISTER: |
8d3b0994 | 586 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
587 | case LOC_COMPUTED: |
588 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 589 | default: |
2a2d4dc3 | 590 | break; |
8d3b0994 AC |
591 | } |
592 | ||
593 | /* We have to look up the symbol because arguments can have | |
594 | two entries (one a parameter, one a local) and the one we | |
595 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 596 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
597 | small structure and gcc2 when the argument type is float |
598 | and it is passed as a double and converted to float by | |
599 | the prologue (in the latter case the type of the LOC_ARG | |
600 | symbol is double and the type of the LOC_LOCAL symbol is | |
601 | float). */ | |
033a42c2 MK |
602 | /* But if the parameter name is null, don't try it. Null |
603 | parameter names occur on the RS/6000, for traceback | |
604 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 605 | |
3567439c | 606 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
607 | { |
608 | struct symbol *nsym; | |
433759f7 | 609 | |
3567439c | 610 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 611 | b, VAR_DOMAIN, NULL); |
55765a25 | 612 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
613 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
614 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 615 | { |
033a42c2 MK |
616 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
617 | that it was passed on the stack and loaded into a | |
618 | register, or passed in a register and stored in a | |
619 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
620 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
621 | |
622 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
623 | |
624 | (1) Because find_saved_registers may be slow for | |
625 | remote debugging. | |
626 | ||
627 | (2) Because registers are often re-used and stack | |
628 | slots rarely (never?) are. Therefore using | |
629 | the stack slot is much less likely to print | |
630 | garbage. | |
8d3b0994 AC |
631 | |
632 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
633 | |
634 | (1) So that the backtrace prints the same value | |
635 | as "print foo". I see no compelling reason | |
636 | why this needs to be the case; having the | |
637 | backtrace print the value which was passed | |
638 | in, and "print foo" print the value as | |
639 | modified within the called function, makes | |
640 | perfect sense to me. | |
641 | ||
642 | Additional note: It might be nice if "info args" | |
643 | displayed both values. | |
644 | ||
645 | One more note: There is a case with SPARC | |
646 | structure passing where we need to use the | |
647 | LOC_REGISTER, but this is dealt with by creating | |
648 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
649 | |
650 | /* Leave sym (the LOC_ARG) alone. */ | |
651 | ; | |
652 | } | |
653 | else | |
654 | sym = nsym; | |
655 | } | |
656 | ||
657 | /* Print the current arg. */ | |
658 | if (!first) | |
659 | ui_out_text (uiout, ", "); | |
660 | ui_out_wrap_hint (uiout, " "); | |
661 | ||
93d86cef JK |
662 | if (!print_args) |
663 | { | |
664 | memset (&arg, 0, sizeof (arg)); | |
665 | arg.sym = sym; | |
e18b2753 JK |
666 | arg.entry_kind = print_entry_values_no; |
667 | memset (&entryarg, 0, sizeof (entryarg)); | |
668 | entryarg.sym = sym; | |
669 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
670 | } |
671 | else | |
e18b2753 | 672 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 673 | |
e18b2753 JK |
674 | if (arg.entry_kind != print_entry_values_only) |
675 | print_frame_arg (&arg); | |
676 | ||
677 | if (entryarg.entry_kind != print_entry_values_no) | |
678 | { | |
679 | if (arg.entry_kind != print_entry_values_only) | |
680 | { | |
681 | ui_out_text (uiout, ", "); | |
682 | ui_out_wrap_hint (uiout, " "); | |
683 | } | |
684 | ||
685 | print_frame_arg (&entryarg); | |
686 | } | |
8d3b0994 | 687 | |
93d86cef | 688 | xfree (arg.error); |
e18b2753 | 689 | xfree (entryarg.error); |
8d3b0994 AC |
690 | |
691 | first = 0; | |
692 | } | |
693 | } | |
694 | ||
695 | /* Don't print nameless args in situations where we don't know | |
696 | enough about the stack to find them. */ | |
697 | if (num != -1) | |
698 | { | |
699 | long start; | |
700 | ||
701 | if (highest_offset == -1) | |
7500260a | 702 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
703 | else |
704 | start = highest_offset; | |
705 | ||
033a42c2 | 706 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
707 | first, stream); |
708 | } | |
033a42c2 | 709 | |
8d3b0994 AC |
710 | do_cleanups (old_chain); |
711 | } | |
712 | ||
033a42c2 MK |
713 | /* Set the current source and line to the location given by frame |
714 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
715 | line is in the center of the next 'list'. */ | |
c789492a | 716 | |
7abfe014 | 717 | void |
033a42c2 | 718 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
719 | { |
720 | struct symtab_and_line sal; | |
721 | ||
033a42c2 | 722 | find_frame_sal (frame, &sal); |
c789492a FL |
723 | if (sal.symtab) |
724 | { | |
725 | if (center) | |
726 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
727 | set_current_source_symtab_and_line (&sal); | |
728 | } | |
729 | } | |
730 | ||
30c33a9f HZ |
731 | /* If ON, GDB will display disassembly of the next source line when |
732 | execution of the program being debugged stops. | |
481df73e HZ |
733 | If AUTO (which is the default), or there's no line info to determine |
734 | the source line of the next instruction, display disassembly of next | |
735 | instruction instead. */ | |
30c33a9f HZ |
736 | |
737 | static enum auto_boolean disassemble_next_line; | |
738 | ||
739 | static void | |
740 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
741 | struct cmd_list_element *c, | |
742 | const char *value) | |
743 | { | |
3e43a32a MS |
744 | fprintf_filtered (file, |
745 | _("Debugger's willingness to use " | |
746 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
747 | value); |
748 | } | |
749 | ||
30c33a9f HZ |
750 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
751 | because it will be broken by filter sometime. */ | |
752 | ||
753 | static void | |
13274fc3 UW |
754 | do_gdb_disassembly (struct gdbarch *gdbarch, |
755 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
756 | { |
757 | volatile struct gdb_exception exception; | |
30c33a9f | 758 | |
b1d288d3 | 759 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 760 | { |
79a45e25 PA |
761 | gdb_disassembly (gdbarch, current_uiout, 0, |
762 | DISASSEMBLY_RAW_INSN, how_many, | |
763 | low, high); | |
30c33a9f | 764 | } |
b1d288d3 JK |
765 | if (exception.reason < 0) |
766 | { | |
767 | /* If an exception was thrown while doing the disassembly, print | |
768 | the error message, to give the user a clue of what happened. */ | |
769 | exception_print (gdb_stderr, exception); | |
770 | } | |
30c33a9f HZ |
771 | } |
772 | ||
033a42c2 | 773 | /* Print information about frame FRAME. The output is format according |
65aa373f | 774 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
775 | PRINT_WHAT is: |
776 | ||
777 | SRC_LINE: Print only source line. | |
778 | LOCATION: Print only location. | |
779 | LOC_AND_SRC: Print location and source line. | |
780 | ||
781 | Used in "where" output, and to emit breakpoint or step | |
782 | messages. */ | |
c906108c | 783 | |
7789c6f5 | 784 | void |
033a42c2 | 785 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
786 | enum print_what print_what, int print_args, |
787 | int set_current_sal) | |
c906108c | 788 | { |
5af949e3 | 789 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 790 | struct symtab_and_line sal; |
c5394b80 JM |
791 | int source_print; |
792 | int location_print; | |
79a45e25 | 793 | struct ui_out *uiout = current_uiout; |
c906108c | 794 | |
033a42c2 | 795 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
796 | || get_frame_type (frame) == SIGTRAMP_FRAME |
797 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 798 | { |
075559bc AC |
799 | struct cleanup *uiout_cleanup |
800 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 801 | |
033a42c2 | 802 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 803 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 804 | |
c906108c | 805 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 806 | to list for this frame. */ |
0faf0076 | 807 | if (print_level) |
52c6a6ac JJ |
808 | { |
809 | ui_out_text (uiout, "#"); | |
0faf0076 | 810 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 811 | frame_relative_level (frame)); |
52c6a6ac | 812 | } |
075559bc | 813 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 814 | { |
075559bc | 815 | annotate_frame_address (); |
5af949e3 UW |
816 | ui_out_field_core_addr (uiout, "addr", |
817 | gdbarch, get_frame_pc (frame)); | |
075559bc | 818 | annotate_frame_address_end (); |
52c6a6ac | 819 | } |
6a3fe0a4 | 820 | |
033a42c2 | 821 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
822 | { |
823 | annotate_function_call (); | |
824 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
825 | } | |
033a42c2 | 826 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
827 | { |
828 | annotate_signal_handler_caller (); | |
829 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
830 | } | |
36f15f55 UW |
831 | else if (get_frame_type (frame) == ARCH_FRAME) |
832 | { | |
833 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
834 | } | |
075559bc | 835 | ui_out_text (uiout, "\n"); |
c906108c | 836 | annotate_frame_end (); |
075559bc AC |
837 | |
838 | do_cleanups (uiout_cleanup); | |
c906108c SS |
839 | return; |
840 | } | |
841 | ||
033a42c2 MK |
842 | /* If FRAME is not the innermost frame, that normally means that |
843 | FRAME->pc points to *after* the call instruction, and we want to | |
844 | get the line containing the call, never the next line. But if | |
845 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
846 | next frame was not entered as the result of a call, and we want | |
847 | to get the line containing FRAME->pc. */ | |
848 | find_frame_sal (frame, &sal); | |
c906108c | 849 | |
0faf0076 AC |
850 | location_print = (print_what == LOCATION |
851 | || print_what == LOC_AND_ADDRESS | |
852 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
853 | |
854 | if (location_print || !sal.symtab) | |
033a42c2 | 855 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 856 | |
0faf0076 | 857 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 858 | |
30c33a9f HZ |
859 | /* If disassemble-next-line is set to auto or on and doesn't have |
860 | the line debug messages for $pc, output the next instruction. */ | |
861 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
862 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
863 | && source_print && !sal.symtab) | |
13274fc3 UW |
864 | do_gdb_disassembly (get_frame_arch (frame), 1, |
865 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 866 | |
c5394b80 JM |
867 | if (source_print && sal.symtab) |
868 | { | |
869 | int done = 0; | |
0faf0076 | 870 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 871 | && frame_show_address (frame, sal)); |
c5394b80 JM |
872 | |
873 | if (annotation_level) | |
874 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 875 | get_frame_pc (frame)); |
c5394b80 JM |
876 | if (!done) |
877 | { | |
9a4105ab | 878 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
879 | deprecated_print_frame_info_listing_hook (sal.symtab, |
880 | sal.line, | |
881 | sal.line + 1, 0); | |
ba4bbdcb | 882 | else |
c5394b80 | 883 | { |
79a45b7d | 884 | struct value_print_options opts; |
433759f7 | 885 | |
79a45b7d | 886 | get_user_print_options (&opts); |
ba4bbdcb | 887 | /* We used to do this earlier, but that is clearly |
c378eb4e | 888 | wrong. This function is used by many different |
ba4bbdcb KS |
889 | parts of gdb, including normal_stop in infrun.c, |
890 | which uses this to print out the current PC | |
891 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
892 | line. Only the command line really wants this |
893 | behavior. Other UIs probably would like the | |
cbd3c883 | 894 | ability to decide for themselves if it is desired. */ |
79a45b7d | 895 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 896 | { |
5af949e3 UW |
897 | ui_out_field_core_addr (uiout, "addr", |
898 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 899 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
900 | } |
901 | ||
902 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 903 | } |
c5394b80 | 904 | } |
30c33a9f HZ |
905 | |
906 | /* If disassemble-next-line is set to on and there is line debug | |
907 | messages, output assembly codes for next line. */ | |
908 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 909 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
910 | } |
911 | ||
08d72866 | 912 | if (set_current_sal) |
e3eebbd7 PA |
913 | { |
914 | CORE_ADDR pc; | |
915 | ||
916 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 917 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 918 | else |
1bfeeb0f | 919 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 920 | } |
c5394b80 JM |
921 | |
922 | annotate_frame_end (); | |
923 | ||
924 | gdb_flush (gdb_stdout); | |
925 | } | |
926 | ||
1bfeeb0f JL |
927 | /* Remember the last symtab and line we displayed, which we use e.g. |
928 | * as the place to put a breakpoint when the `break' command is | |
929 | * invoked with no arguments. */ | |
930 | ||
931 | static void | |
932 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
933 | CORE_ADDR addr, struct symtab *symtab, | |
934 | int line) | |
935 | { | |
936 | last_displayed_sal_valid = valid; | |
937 | last_displayed_pspace = pspace; | |
938 | last_displayed_addr = addr; | |
939 | last_displayed_symtab = symtab; | |
940 | last_displayed_line = line; | |
4cb6da1c AR |
941 | if (valid && pspace == NULL) |
942 | { | |
4cb6da1c | 943 | clear_last_displayed_sal (); |
e36930bb PA |
944 | internal_error (__FILE__, __LINE__, |
945 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 946 | } |
1bfeeb0f JL |
947 | } |
948 | ||
949 | /* Forget the last sal we displayed. */ | |
950 | ||
951 | void | |
952 | clear_last_displayed_sal (void) | |
953 | { | |
954 | last_displayed_sal_valid = 0; | |
955 | last_displayed_pspace = 0; | |
956 | last_displayed_addr = 0; | |
957 | last_displayed_symtab = 0; | |
958 | last_displayed_line = 0; | |
959 | } | |
960 | ||
961 | /* Is our record of the last sal we displayed valid? If not, | |
962 | * the get_last_displayed_* functions will return NULL or 0, as | |
963 | * appropriate. */ | |
964 | ||
965 | int | |
966 | last_displayed_sal_is_valid (void) | |
967 | { | |
968 | return last_displayed_sal_valid; | |
969 | } | |
970 | ||
971 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
972 | ||
973 | struct program_space * | |
974 | get_last_displayed_pspace (void) | |
975 | { | |
976 | if (last_displayed_sal_valid) | |
977 | return last_displayed_pspace; | |
978 | return 0; | |
979 | } | |
980 | ||
981 | /* Get the address of the last sal we displayed, if it's valid. */ | |
982 | ||
983 | CORE_ADDR | |
984 | get_last_displayed_addr (void) | |
985 | { | |
986 | if (last_displayed_sal_valid) | |
987 | return last_displayed_addr; | |
988 | return 0; | |
989 | } | |
990 | ||
991 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
992 | ||
993 | struct symtab* | |
994 | get_last_displayed_symtab (void) | |
995 | { | |
996 | if (last_displayed_sal_valid) | |
997 | return last_displayed_symtab; | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1002 | ||
1003 | int | |
1004 | get_last_displayed_line (void) | |
1005 | { | |
1006 | if (last_displayed_sal_valid) | |
1007 | return last_displayed_line; | |
1008 | return 0; | |
1009 | } | |
1010 | ||
1011 | /* Get the last sal we displayed, if it's valid. */ | |
1012 | ||
1013 | void | |
1014 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1015 | { | |
1016 | if (last_displayed_sal_valid) | |
1017 | { | |
1018 | sal->pspace = last_displayed_pspace; | |
1019 | sal->pc = last_displayed_addr; | |
1020 | sal->symtab = last_displayed_symtab; | |
1021 | sal->line = last_displayed_line; | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | sal->pspace = 0; | |
1026 | sal->pc = 0; | |
1027 | sal->symtab = 0; | |
1028 | sal->line = 0; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | ||
e9e07ba6 | 1033 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1034 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1035 | |
f8f6f20b | 1036 | void |
55b87a52 | 1037 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1038 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1039 | { |
1040 | struct symbol *func; | |
8b93c638 | 1041 | |
f8f6f20b TJB |
1042 | *funname = NULL; |
1043 | *funlang = language_unknown; | |
e9e07ba6 JK |
1044 | if (funcp) |
1045 | *funcp = NULL; | |
c5394b80 | 1046 | |
edb3359d | 1047 | func = get_frame_function (frame); |
c906108c SS |
1048 | if (func) |
1049 | { | |
1050 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1051 | function (when we are in the first function in a file which |
1052 | is compiled without debugging symbols, the previous function | |
1053 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1054 | that is supposed to tell us where the file with debugging |
1055 | symbols ends has been truncated by ar because it is longer | |
1056 | than 15 characters). This also occurs if the user uses asm() | |
1057 | to create a function but not stabs for it (in a file compiled | |
1058 | with -g). | |
c5aa993b JM |
1059 | |
1060 | So look in the minimal symbol tables as well, and if it comes | |
1061 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1062 | I don't think this can ever cause any problems; there |
1063 | shouldn't be any minimal symbols in the middle of a function; | |
1064 | if this is ever changed many parts of GDB will need to be | |
1065 | changed (and we'll create a find_pc_minimal_function or some | |
1066 | such). */ | |
1067 | ||
7cbd4a93 | 1068 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1069 | |
1070 | /* Don't attempt to do this for inlined functions, which do not | |
1071 | have a corresponding minimal symbol. */ | |
1072 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1073 | msymbol | |
1074 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1075 | else |
1076 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1077 | |
7cbd4a93 TT |
1078 | if (msymbol.minsym != NULL |
1079 | && (SYMBOL_VALUE_ADDRESS (msymbol.minsym) | |
c906108c SS |
1080 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1081 | { | |
c906108c SS |
1082 | /* We also don't know anything about the function besides |
1083 | its address and name. */ | |
1084 | func = 0; | |
55b87a52 | 1085 | *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym)); |
7cbd4a93 | 1086 | *funlang = SYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1087 | } |
1088 | else | |
1089 | { | |
55b87a52 | 1090 | *funname = xstrdup (SYMBOL_PRINT_NAME (func)); |
f8f6f20b | 1091 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1092 | if (funcp) |
1093 | *funcp = func; | |
f8f6f20b | 1094 | if (*funlang == language_cplus) |
c5aa993b | 1095 | { |
033a42c2 MK |
1096 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1097 | to display the demangled name that we already have | |
1098 | stored in the symbol table, but we stored a version | |
1099 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1100 | display parameters. So remove the parameters. */ |
f8f6f20b | 1101 | char *func_only = cp_remove_params (*funname); |
433759f7 | 1102 | |
3567439c DJ |
1103 | if (func_only) |
1104 | { | |
55b87a52 | 1105 | xfree (*funname); |
f8f6f20b | 1106 | *funname = func_only; |
3567439c | 1107 | } |
c5aa993b | 1108 | } |
c906108c SS |
1109 | } |
1110 | } | |
1111 | else | |
1112 | { | |
7cbd4a93 | 1113 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1114 | CORE_ADDR pc; |
033a42c2 | 1115 | |
e3eebbd7 PA |
1116 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1117 | return; | |
1118 | ||
1119 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1120 | if (msymbol.minsym != NULL) |
c906108c | 1121 | { |
55b87a52 | 1122 | *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym)); |
7cbd4a93 | 1123 | *funlang = SYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1124 | } |
1125 | } | |
f8f6f20b TJB |
1126 | } |
1127 | ||
1128 | static void | |
1129 | print_frame (struct frame_info *frame, int print_level, | |
1130 | enum print_what print_what, int print_args, | |
1131 | struct symtab_and_line sal) | |
1132 | { | |
5af949e3 | 1133 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1134 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1135 | char *funname = NULL; |
f8f6f20b | 1136 | enum language funlang = language_unknown; |
f99d8bf4 | 1137 | struct ui_file *stb; |
f8f6f20b TJB |
1138 | struct cleanup *old_chain, *list_chain; |
1139 | struct value_print_options opts; | |
e9e07ba6 | 1140 | struct symbol *func; |
e3eebbd7 PA |
1141 | CORE_ADDR pc = 0; |
1142 | int pc_p; | |
1143 | ||
1144 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1145 | |
f99d8bf4 PA |
1146 | stb = mem_fileopen (); |
1147 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1148 | |
e9e07ba6 | 1149 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1150 | make_cleanup (xfree, funname); |
c906108c | 1151 | |
033a42c2 | 1152 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1153 | gdbarch, pc); |
c5394b80 | 1154 | |
666547aa | 1155 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1156 | |
0faf0076 | 1157 | if (print_level) |
8b93c638 | 1158 | { |
8b93c638 | 1159 | ui_out_text (uiout, "#"); |
0faf0076 | 1160 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1161 | frame_relative_level (frame)); |
8b93c638 | 1162 | } |
79a45b7d TT |
1163 | get_user_print_options (&opts); |
1164 | if (opts.addressprint) | |
e3eebbd7 PA |
1165 | if (!sal.symtab |
1166 | || frame_show_address (frame, sal) | |
0faf0076 | 1167 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1168 | { |
1169 | annotate_frame_address (); | |
e3eebbd7 PA |
1170 | if (pc_p) |
1171 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1172 | else | |
1173 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1174 | annotate_frame_address_end (); |
1175 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1176 | } |
1177 | annotate_frame_function_name (); | |
f99d8bf4 | 1178 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1179 | funlang, DMGL_ANSI); |
8b93c638 JM |
1180 | ui_out_field_stream (uiout, "func", stb); |
1181 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1182 | annotate_frame_args (); |
1183 | ||
8b93c638 | 1184 | ui_out_text (uiout, " ("); |
0faf0076 | 1185 | if (print_args) |
c906108c | 1186 | { |
311b5970 JK |
1187 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1188 | int numargs; | |
d493eb33 | 1189 | struct cleanup *args_list_chain; |
311b5970 | 1190 | volatile struct gdb_exception e; |
433759f7 | 1191 | |
311b5970 JK |
1192 | if (gdbarch_frame_num_args_p (gdbarch)) |
1193 | { | |
1194 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1195 | gdb_assert (numargs >= 0); | |
1196 | } | |
1197 | else | |
1198 | numargs = -1; | |
1199 | ||
68c81b54 | 1200 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
1201 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1202 | { | |
1203 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1204 | } | |
c378eb4e | 1205 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1206 | will have " that will not be properly escaped. */ |
666547aa | 1207 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1208 | do_cleanups (args_list_chain); |
c5394b80 JM |
1209 | QUIT; |
1210 | } | |
8b93c638 | 1211 | ui_out_text (uiout, ")"); |
4e04028d | 1212 | if (sal.symtab) |
c5394b80 | 1213 | { |
1b56eb55 JK |
1214 | const char *filename_display; |
1215 | ||
1216 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1217 | annotate_frame_source_begin (); |
8b93c638 JM |
1218 | ui_out_wrap_hint (uiout, " "); |
1219 | ui_out_text (uiout, " at "); | |
1220 | annotate_frame_source_file (); | |
1b56eb55 | 1221 | ui_out_field_string (uiout, "file", filename_display); |
76ff342d DJ |
1222 | if (ui_out_is_mi_like_p (uiout)) |
1223 | { | |
1224 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1225 | |
f35a17b5 | 1226 | ui_out_field_string (uiout, "fullname", fullname); |
76ff342d | 1227 | } |
8b93c638 JM |
1228 | annotate_frame_source_file_end (); |
1229 | ui_out_text (uiout, ":"); | |
1230 | annotate_frame_source_line (); | |
1231 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1232 | annotate_frame_source_end (); |
1233 | } | |
c906108c | 1234 | |
4e04028d | 1235 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1236 | { |
6c95b8df PA |
1237 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1238 | get_frame_pc (frame)); | |
4d1eb6b4 | 1239 | |
c5394b80 | 1240 | if (lib) |
c906108c | 1241 | { |
c5394b80 | 1242 | annotate_frame_where (); |
8b93c638 JM |
1243 | ui_out_wrap_hint (uiout, " "); |
1244 | ui_out_text (uiout, " from "); | |
1245 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1246 | } |
c906108c | 1247 | } |
e514a9d6 | 1248 | |
666547aa | 1249 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1250 | do_cleanups (list_chain); |
8b93c638 JM |
1251 | ui_out_text (uiout, "\n"); |
1252 | do_cleanups (old_chain); | |
c906108c SS |
1253 | } |
1254 | \f | |
c5aa993b | 1255 | |
033a42c2 MK |
1256 | /* Read a frame specification in whatever the appropriate format is |
1257 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
1258 | specification is in any way invalid (so this function never returns | |
1259 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
1260 | the default selected frame was used. */ | |
c906108c | 1261 | |
1c8831c5 AC |
1262 | static struct frame_info * |
1263 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
1264 | int *selected_frame_p) | |
c906108c | 1265 | { |
1c8831c5 AC |
1266 | int numargs; |
1267 | struct value *args[4]; | |
1268 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1269 | |
1c8831c5 AC |
1270 | if (frame_exp == NULL) |
1271 | numargs = 0; | |
1272 | else | |
c906108c | 1273 | { |
1c8831c5 AC |
1274 | numargs = 0; |
1275 | while (1) | |
c906108c | 1276 | { |
1c8831c5 AC |
1277 | char *addr_string; |
1278 | struct cleanup *cleanup; | |
1279 | const char *p; | |
1280 | ||
1281 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1282 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1283 | if (!*frame_exp) |
1284 | break; | |
c906108c | 1285 | |
1c8831c5 AC |
1286 | /* Parse the argument, extract it, save it. */ |
1287 | for (p = frame_exp; | |
1288 | *p && !isspace (*p); | |
1289 | p++); | |
1290 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1291 | frame_exp = p; |
1c8831c5 AC |
1292 | cleanup = make_cleanup (xfree, addr_string); |
1293 | ||
1294 | /* NOTE: Parse and evaluate expression, but do not use | |
1295 | functions such as parse_and_eval_long or | |
1296 | parse_and_eval_address to also extract the value. | |
1297 | Instead value_as_long and value_as_address are used. | |
1298 | This avoids problems with expressions that contain | |
1299 | side-effects. */ | |
1300 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1301 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1302 | args[numargs++] = parse_and_eval (addr_string); |
1303 | ||
1304 | do_cleanups (cleanup); | |
c906108c SS |
1305 | } |
1306 | } | |
1307 | ||
1c8831c5 AC |
1308 | /* If no args, default to the selected frame. */ |
1309 | if (numargs == 0) | |
c906108c | 1310 | { |
1c8831c5 AC |
1311 | if (selected_frame_p != NULL) |
1312 | (*selected_frame_p) = 1; | |
1313 | return get_selected_frame (message); | |
1314 | } | |
c906108c | 1315 | |
1c8831c5 AC |
1316 | /* None of the remaining use the selected frame. */ |
1317 | if (selected_frame_p != NULL) | |
98f276a0 | 1318 | (*selected_frame_p) = 0; |
c906108c | 1319 | |
1c8831c5 AC |
1320 | /* Assume the single arg[0] is an integer, and try using that to |
1321 | select a frame relative to current. */ | |
1322 | if (numargs == 1) | |
1323 | { | |
1324 | struct frame_info *fid; | |
1325 | int level = value_as_long (args[0]); | |
433759f7 | 1326 | |
1c8831c5 AC |
1327 | fid = find_relative_frame (get_current_frame (), &level); |
1328 | if (level == 0) | |
c378eb4e | 1329 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1330 | return fid; |
1331 | } | |
c906108c | 1332 | |
1c8831c5 AC |
1333 | /* Convert each value into a corresponding address. */ |
1334 | { | |
1335 | int i; | |
433759f7 | 1336 | |
1c8831c5 | 1337 | for (i = 0; i < numargs; i++) |
1e275f79 | 1338 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1339 | } |
c5aa993b | 1340 | |
1c8831c5 AC |
1341 | /* Assume that the single arg[0] is an address, use that to identify |
1342 | a frame with a matching ID. Should this also accept stack/pc or | |
1343 | stack/pc/special. */ | |
1344 | if (numargs == 1) | |
1345 | { | |
1346 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1347 | struct frame_info *fid; | |
1348 | ||
1c8831c5 AC |
1349 | /* If (s)he specifies the frame with an address, he deserves |
1350 | what (s)he gets. Still, give the highest one that matches. | |
1351 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1352 | know). */ | |
1353 | for (fid = get_current_frame (); | |
1354 | fid != NULL; | |
1355 | fid = get_prev_frame (fid)) | |
1356 | { | |
1357 | if (frame_id_eq (id, get_frame_id (fid))) | |
1358 | { | |
c7ce8faa DJ |
1359 | struct frame_info *prev_frame; |
1360 | ||
1361 | while (1) | |
1362 | { | |
1363 | prev_frame = get_prev_frame (fid); | |
1364 | if (!prev_frame | |
1365 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1366 | break; | |
1367 | fid = prev_frame; | |
1368 | } | |
1c8831c5 AC |
1369 | return fid; |
1370 | } | |
1371 | } | |
c906108c SS |
1372 | } |
1373 | ||
1c8831c5 AC |
1374 | /* We couldn't identify the frame as an existing frame, but |
1375 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1376 | if (numargs == 1) |
1377 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1378 | else if (numargs == 2) |
1379 | return create_new_frame (addrs[0], addrs[1]); | |
1380 | else | |
8a3fe4f8 | 1381 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1382 | } |
1383 | ||
9c833c82 | 1384 | static struct frame_info * |
1c8831c5 AC |
1385 | parse_frame_specification (char *frame_exp) |
1386 | { | |
1387 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
1388 | } |
1389 | ||
033a42c2 MK |
1390 | /* Print verbosely the selected frame or the frame at address |
1391 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1392 | |
1393 | static void | |
fba45db2 | 1394 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1395 | { |
1396 | struct frame_info *fi; | |
1397 | struct symtab_and_line sal; | |
1398 | struct symbol *func; | |
1399 | struct symtab *s; | |
1400 | struct frame_info *calling_frame_info; | |
167e4384 | 1401 | int numregs; |
0d5cff50 | 1402 | const char *funname = 0; |
c906108c | 1403 | enum language funlang = language_unknown; |
82de1e5b | 1404 | const char *pc_regname; |
1c8831c5 | 1405 | int selected_frame_p; |
7500260a | 1406 | struct gdbarch *gdbarch; |
3567439c | 1407 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1408 | CORE_ADDR frame_pc; |
1409 | int frame_pc_p; | |
1410 | CORE_ADDR caller_pc; | |
c906108c | 1411 | |
1c8831c5 | 1412 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1413 | gdbarch = get_frame_arch (fi); |
c906108c | 1414 | |
82de1e5b AC |
1415 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1416 | is not a good name. */ | |
12368003 | 1417 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1418 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1419 | easily not match that of the internal value returned by |
1420 | get_frame_pc(). */ | |
12368003 | 1421 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1422 | else |
3e8c568d | 1423 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1424 | architectures will often have a hardware register called "pc", |
1425 | and that register's value, again, can easily not match | |
1426 | get_frame_pc(). */ | |
1427 | pc_regname = "pc"; | |
1428 | ||
008f8f2e | 1429 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1430 | find_frame_sal (fi, &sal); |
c906108c | 1431 | func = get_frame_function (fi); |
008f8f2e | 1432 | s = sal.symtab; |
c906108c SS |
1433 | if (func) |
1434 | { | |
3567439c | 1435 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1436 | funlang = SYMBOL_LANGUAGE (func); |
1437 | if (funlang == language_cplus) | |
1438 | { | |
3567439c DJ |
1439 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1440 | to display the demangled name that we already have | |
1441 | stored in the symbol table, but we stored a version | |
1442 | with DMGL_PARAMS turned on, and here we don't want to | |
1443 | display parameters. So remove the parameters. */ | |
1444 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1445 | |
3567439c DJ |
1446 | if (func_only) |
1447 | { | |
1448 | funname = func_only; | |
1449 | make_cleanup (xfree, func_only); | |
1450 | } | |
c5aa993b | 1451 | } |
c906108c | 1452 | } |
008f8f2e | 1453 | else if (frame_pc_p) |
c906108c | 1454 | { |
7cbd4a93 | 1455 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1456 | |
008f8f2e | 1457 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1458 | if (msymbol.minsym != NULL) |
c906108c | 1459 | { |
7cbd4a93 TT |
1460 | funname = SYMBOL_PRINT_NAME (msymbol.minsym); |
1461 | funlang = SYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1462 | } |
1463 | } | |
1464 | calling_frame_info = get_prev_frame (fi); | |
1465 | ||
1c8831c5 | 1466 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1467 | { |
a3f17187 | 1468 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1469 | frame_relative_level (fi)); |
c906108c SS |
1470 | } |
1471 | else | |
1472 | { | |
a3f17187 | 1473 | printf_filtered (_("Stack frame at ")); |
c906108c | 1474 | } |
5af949e3 | 1475 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1476 | printf_filtered (":\n"); |
82de1e5b | 1477 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1478 | if (frame_pc_p) |
1479 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1480 | else | |
1481 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1482 | |
1483 | wrap_here (" "); | |
1484 | if (funname) | |
1485 | { | |
1486 | printf_filtered (" in "); | |
1487 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1488 | DMGL_ANSI | DMGL_PARAMS); | |
1489 | } | |
1490 | wrap_here (" "); | |
1491 | if (sal.symtab) | |
05cba821 JK |
1492 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1493 | sal.line); | |
c906108c SS |
1494 | puts_filtered ("; "); |
1495 | wrap_here (" "); | |
82de1e5b | 1496 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1497 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1498 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1499 | else | |
1500 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1501 | printf_filtered ("\n"); |
1502 | ||
55feb689 DJ |
1503 | if (calling_frame_info == NULL) |
1504 | { | |
1505 | enum unwind_stop_reason reason; | |
1506 | ||
1507 | reason = get_frame_unwind_stop_reason (fi); | |
1508 | if (reason != UNWIND_NO_REASON) | |
1509 | printf_filtered (_(" Outermost frame: %s\n"), | |
1510 | frame_stop_reason_string (reason)); | |
1511 | } | |
111c6489 JK |
1512 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1513 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1514 | else if (get_frame_type (fi) == INLINE_FRAME) |
1515 | printf_filtered (" inlined into frame %d", | |
1516 | frame_relative_level (get_prev_frame (fi))); | |
1517 | else | |
c906108c SS |
1518 | { |
1519 | printf_filtered (" called by frame at "); | |
5af949e3 | 1520 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1521 | gdb_stdout); |
c906108c | 1522 | } |
75e3c1f9 | 1523 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1524 | puts_filtered (","); |
1525 | wrap_here (" "); | |
75e3c1f9 | 1526 | if (get_next_frame (fi)) |
c906108c SS |
1527 | { |
1528 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1529 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1530 | gdb_stdout); |
c906108c | 1531 | } |
75e3c1f9 | 1532 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1533 | puts_filtered ("\n"); |
55feb689 | 1534 | |
c906108c | 1535 | if (s) |
1058bca7 AC |
1536 | printf_filtered (" source language %s.\n", |
1537 | language_str (s->language)); | |
c906108c | 1538 | |
c906108c SS |
1539 | { |
1540 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1541 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1542 | /* Number of args for this frame, or -1 if unknown. */ |
1543 | int numargs; | |
1544 | ||
1545 | if (arg_list == 0) | |
1546 | printf_filtered (" Arglist at unknown address.\n"); | |
1547 | else | |
1548 | { | |
1549 | printf_filtered (" Arglist at "); | |
5af949e3 | 1550 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1551 | printf_filtered (","); |
1552 | ||
7500260a | 1553 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1554 | { |
1555 | numargs = -1; | |
1556 | puts_filtered (" args: "); | |
1557 | } | |
c906108c | 1558 | else |
983a287a | 1559 | { |
7500260a | 1560 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1561 | gdb_assert (numargs >= 0); |
1562 | if (numargs == 0) | |
1563 | puts_filtered (" no args."); | |
1564 | else if (numargs == 1) | |
1565 | puts_filtered (" 1 arg: "); | |
1566 | else | |
1567 | printf_filtered (" %d args: ", numargs); | |
1568 | } | |
c906108c SS |
1569 | print_frame_args (func, fi, numargs, gdb_stdout); |
1570 | puts_filtered ("\n"); | |
1571 | } | |
1572 | } | |
1573 | { | |
1574 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1575 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1576 | |
1577 | if (arg_list == 0) | |
1578 | printf_filtered (" Locals at unknown address,"); | |
1579 | else | |
1580 | { | |
1581 | printf_filtered (" Locals at "); | |
5af949e3 | 1582 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1583 | printf_filtered (","); |
1584 | } | |
1585 | } | |
1586 | ||
4f460812 AC |
1587 | /* Print as much information as possible on the location of all the |
1588 | registers. */ | |
1589 | { | |
1590 | enum lval_type lval; | |
1591 | int optimized; | |
0fdb4f18 | 1592 | int unavailable; |
4f460812 AC |
1593 | CORE_ADDR addr; |
1594 | int realnum; | |
1595 | int count; | |
1596 | int i; | |
1597 | int need_nl = 1; | |
1598 | ||
1599 | /* The sp is special; what's displayed isn't the save address, but | |
1600 | the value of the previous frame's sp. This is a legacy thing, | |
1601 | at one stage the frame cached the previous frame's SP instead | |
1602 | of its address, hence it was easiest to just display the cached | |
1603 | value. */ | |
7500260a | 1604 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1605 | { |
1606 | /* Find out the location of the saved stack pointer with out | |
1607 | actually evaluating it. */ | |
7500260a | 1608 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1609 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1610 | &realnum, NULL); |
0fdb4f18 | 1611 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1612 | { |
e17a4113 UW |
1613 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1614 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1615 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1616 | CORE_ADDR sp; |
433759f7 | 1617 | |
7500260a | 1618 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1619 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1620 | &realnum, value); |
af1342ab AC |
1621 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1622 | stack pointer was packed as an unsigned integer. That | |
1623 | may or may not be valid. */ | |
e17a4113 | 1624 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1625 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1626 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1627 | printf_filtered ("\n"); |
1628 | need_nl = 0; | |
c906108c | 1629 | } |
0fdb4f18 | 1630 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1631 | { |
1632 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1633 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1634 | printf_filtered ("\n"); |
1635 | need_nl = 0; | |
1636 | } | |
0fdb4f18 | 1637 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1638 | { |
1639 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1640 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1641 | need_nl = 0; |
1642 | } | |
1643 | /* else keep quiet. */ | |
1644 | } | |
1645 | ||
1646 | count = 0; | |
7500260a UW |
1647 | numregs = gdbarch_num_regs (gdbarch) |
1648 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1649 | for (i = 0; i < numregs; i++) |
7500260a UW |
1650 | if (i != gdbarch_sp_regnum (gdbarch) |
1651 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1652 | { |
1653 | /* Find out the location of the saved register without | |
1654 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1655 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1656 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1657 | /* For moment, only display registers that were saved on the |
1658 | stack. */ | |
0fdb4f18 | 1659 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1660 | { |
1661 | if (count == 0) | |
1662 | puts_filtered (" Saved registers:\n "); | |
1663 | else | |
1664 | puts_filtered (","); | |
1665 | wrap_here (" "); | |
c9f4d572 | 1666 | printf_filtered (" %s at ", |
7500260a | 1667 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1668 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1669 | count++; |
1670 | } | |
1671 | } | |
1672 | if (count || need_nl) | |
c906108c | 1673 | puts_filtered ("\n"); |
4f460812 | 1674 | } |
3567439c DJ |
1675 | |
1676 | do_cleanups (back_to); | |
c906108c SS |
1677 | } |
1678 | ||
033a42c2 MK |
1679 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1680 | frames. */ | |
c906108c SS |
1681 | |
1682 | static void | |
1e611234 PM |
1683 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1684 | int from_tty) | |
c906108c SS |
1685 | { |
1686 | struct frame_info *fi; | |
52f0bd74 AC |
1687 | int count; |
1688 | int i; | |
1689 | struct frame_info *trailing; | |
1e611234 PM |
1690 | int trailing_level, py_start = 0, py_end = 0; |
1691 | enum py_bt_status result = PY_BT_ERROR; | |
c906108c SS |
1692 | |
1693 | if (!target_has_stack) | |
8a3fe4f8 | 1694 | error (_("No stack.")); |
c906108c | 1695 | |
033a42c2 MK |
1696 | /* The following code must do two things. First, it must set the |
1697 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1698 | printing. Second, it must set the variable count to the number |
1699 | of frames which we should print, or -1 if all of them. */ | |
1700 | trailing = get_current_frame (); | |
d082b2bb | 1701 | |
c906108c SS |
1702 | trailing_level = 0; |
1703 | if (count_exp) | |
1704 | { | |
bb518678 | 1705 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1706 | if (count < 0) |
1707 | { | |
1708 | struct frame_info *current; | |
1709 | ||
1e611234 | 1710 | py_start = count; |
c906108c SS |
1711 | count = -count; |
1712 | ||
1713 | current = trailing; | |
1714 | while (current && count--) | |
1715 | { | |
1716 | QUIT; | |
1717 | current = get_prev_frame (current); | |
1718 | } | |
c5aa993b | 1719 | |
033a42c2 MK |
1720 | /* Will stop when CURRENT reaches the top of the stack. |
1721 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1722 | while (current) |
1723 | { | |
1724 | QUIT; | |
1725 | trailing = get_prev_frame (trailing); | |
1726 | current = get_prev_frame (current); | |
1727 | trailing_level++; | |
1728 | } | |
c5aa993b | 1729 | |
c906108c SS |
1730 | count = -1; |
1731 | } | |
1e611234 PM |
1732 | else |
1733 | { | |
1734 | py_start = 0; | |
1735 | py_end = count; | |
1736 | } | |
c906108c SS |
1737 | } |
1738 | else | |
1e611234 PM |
1739 | { |
1740 | py_end = -1; | |
1741 | count = -1; | |
1742 | } | |
c906108c SS |
1743 | |
1744 | if (info_verbose) | |
1745 | { | |
033a42c2 MK |
1746 | /* Read in symbols for all of the frames. Need to do this in a |
1747 | separate pass so that "Reading in symbols for xxx" messages | |
1748 | don't screw up the appearance of the backtrace. Also if | |
1749 | people have strong opinions against reading symbols for | |
c5aa993b | 1750 | backtrace this may have to be an option. */ |
c906108c | 1751 | i = count; |
033a42c2 | 1752 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1753 | { |
ccefe4c4 | 1754 | CORE_ADDR pc; |
433759f7 | 1755 | |
c906108c | 1756 | QUIT; |
ccefe4c4 TT |
1757 | pc = get_frame_address_in_block (fi); |
1758 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1759 | } |
1760 | } | |
1761 | ||
1e611234 | 1762 | if (! no_filters) |
c906108c | 1763 | { |
1e611234 PM |
1764 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
1765 | enum py_frame_args arg_type; | |
c906108c | 1766 | |
c906108c | 1767 | if (show_locals) |
1e611234 PM |
1768 | flags |= PRINT_LOCALS; |
1769 | ||
1770 | if (!strcmp (print_frame_arguments, "scalars")) | |
1771 | arg_type = CLI_SCALAR_VALUES; | |
1772 | else if (!strcmp (print_frame_arguments, "all")) | |
1773 | arg_type = CLI_ALL_VALUES; | |
1774 | else | |
1775 | arg_type = NO_VALUES; | |
1776 | ||
1777 | result = apply_frame_filter (get_current_frame (), flags, arg_type, | |
1778 | current_uiout, py_start, py_end); | |
1779 | ||
1780 | } | |
1781 | /* Run the inbuilt backtrace if there are no filters registered, or | |
1782 | "no-filters" has been specified from the command. */ | |
1783 | if (no_filters || result == PY_BT_NO_FILTERS) | |
1784 | { | |
1785 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1786 | { | |
1787 | QUIT; | |
1788 | ||
1789 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1790 | means further attempts to backtrace would fail (on the other | |
1791 | hand, perhaps the code does or could be fixed to make sure | |
1792 | the frame->prev field gets set to NULL in that case). */ | |
1793 | ||
08d72866 | 1794 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1e611234 | 1795 | if (show_locals) |
d0548fa2 PM |
1796 | { |
1797 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1798 | |
d0548fa2 | 1799 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1800 | |
d0548fa2 PM |
1801 | /* print_frame_local_vars invalidates FI. */ |
1802 | fi = frame_find_by_id (frame_id); | |
1803 | if (fi == NULL) | |
1804 | { | |
1805 | trailing = NULL; | |
1806 | warning (_("Unable to restore previously selected frame.")); | |
1807 | break; | |
1808 | } | |
8f043999 | 1809 | } |
55feb689 | 1810 | |
1e611234 PM |
1811 | /* Save the last frame to check for error conditions. */ |
1812 | trailing = fi; | |
1813 | } | |
c906108c | 1814 | |
1e611234 PM |
1815 | /* If we've stopped before the end, mention that. */ |
1816 | if (fi && from_tty) | |
1817 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1818 | |
1e611234 PM |
1819 | /* If we've run out of frames, and the reason appears to be an error |
1820 | condition, print it. */ | |
1821 | if (fi == NULL && trailing != NULL) | |
1822 | { | |
1823 | enum unwind_stop_reason reason; | |
55feb689 | 1824 | |
1e611234 PM |
1825 | reason = get_frame_unwind_stop_reason (trailing); |
1826 | if (reason >= UNWIND_FIRST_ERROR) | |
1827 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1828 | frame_stop_reason_string (reason)); | |
1829 | } | |
55feb689 | 1830 | } |
c906108c SS |
1831 | } |
1832 | ||
1833 | static void | |
fba45db2 | 1834 | backtrace_command (char *arg, int from_tty) |
c906108c | 1835 | { |
5fe41fbf | 1836 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1837 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1838 | int user_arg = 0; | |
c906108c | 1839 | |
033a42c2 | 1840 | if (arg) |
c906108c | 1841 | { |
033a42c2 | 1842 | char **argv; |
c906108c SS |
1843 | int i; |
1844 | ||
d1a41061 | 1845 | argv = gdb_buildargv (arg); |
5fe41fbf | 1846 | make_cleanup_freeargv (argv); |
c906108c | 1847 | argc = 0; |
033a42c2 | 1848 | for (i = 0; argv[i]; i++) |
c5aa993b | 1849 | { |
745b8ca0 | 1850 | unsigned int j; |
c5aa993b | 1851 | |
033a42c2 | 1852 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1853 | argv[i][j] = tolower (argv[i][j]); |
1854 | ||
1e611234 PM |
1855 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1856 | no_filters = argc; | |
c5aa993b JM |
1857 | else |
1858 | { | |
1e611234 PM |
1859 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1860 | fulltrace_arg = argc; | |
1861 | else | |
1862 | { | |
1863 | user_arg++; | |
1864 | arglen += strlen (argv[i]); | |
1865 | } | |
c5aa993b | 1866 | } |
1e611234 | 1867 | argc++; |
c5aa993b | 1868 | } |
1e611234 PM |
1869 | arglen += user_arg; |
1870 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1871 | { |
033a42c2 | 1872 | if (arglen > 0) |
c5aa993b | 1873 | { |
033a42c2 | 1874 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1875 | make_cleanup (xfree, arg); |
1876 | arg[0] = 0; | |
1e611234 | 1877 | for (i = 0; i < argc; i++) |
c5aa993b | 1878 | { |
1e611234 | 1879 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1880 | { |
033a42c2 MK |
1881 | strcat (arg, argv[i]); |
1882 | strcat (arg, " "); | |
c5aa993b JM |
1883 | } |
1884 | } | |
1885 | } | |
1886 | else | |
033a42c2 | 1887 | arg = NULL; |
c5aa993b | 1888 | } |
c906108c SS |
1889 | } |
1890 | ||
1e611234 PM |
1891 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1892 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1893 | |
5fe41fbf | 1894 | do_cleanups (old_chain); |
c906108c SS |
1895 | } |
1896 | ||
1897 | static void | |
fba45db2 | 1898 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1899 | { |
1e611234 | 1900 | backtrace_command_1 (arg, 1 /* show_locals */, 0, from_tty); |
c906108c | 1901 | } |
c906108c | 1902 | \f |
c5aa993b | 1903 | |
2c58c0a9 PA |
1904 | /* Iterate over the local variables of a block B, calling CB with |
1905 | CB_DATA. */ | |
c906108c | 1906 | |
2c58c0a9 PA |
1907 | static void |
1908 | iterate_over_block_locals (struct block *b, | |
1909 | iterate_over_block_arg_local_vars_cb cb, | |
1910 | void *cb_data) | |
c906108c | 1911 | { |
8157b174 | 1912 | struct block_iterator iter; |
de4f826b | 1913 | struct symbol *sym; |
c906108c | 1914 | |
de4f826b | 1915 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1916 | { |
c906108c SS |
1917 | switch (SYMBOL_CLASS (sym)) |
1918 | { | |
1919 | case LOC_LOCAL: | |
1920 | case LOC_REGISTER: | |
1921 | case LOC_STATIC: | |
4c2df51b | 1922 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1923 | if (SYMBOL_IS_ARGUMENT (sym)) |
1924 | break; | |
4357ac6c TT |
1925 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1926 | break; | |
2c58c0a9 | 1927 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1928 | break; |
1929 | ||
1930 | default: | |
1931 | /* Ignore symbols which are not locals. */ | |
1932 | break; | |
1933 | } | |
1934 | } | |
c906108c SS |
1935 | } |
1936 | ||
65c06092 | 1937 | |
c906108c SS |
1938 | /* Same, but print labels. */ |
1939 | ||
65c06092 JB |
1940 | #if 0 |
1941 | /* Commented out, as the code using this function has also been | |
1942 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1943 | was commented out in the first place. The discussion introducing | |
1944 | this change (2007-12-04: Support lexical blocks and function bodies | |
1945 | that occupy non-contiguous address ranges) did not explain why | |
1946 | this change was made. */ | |
c906108c | 1947 | static int |
5af949e3 UW |
1948 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1949 | int *have_default, struct ui_file *stream) | |
c906108c | 1950 | { |
8157b174 | 1951 | struct block_iterator iter; |
52f0bd74 AC |
1952 | struct symbol *sym; |
1953 | int values_printed = 0; | |
c906108c | 1954 | |
de4f826b | 1955 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1956 | { |
3567439c | 1957 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1958 | { |
1959 | if (*have_default) | |
1960 | continue; | |
1961 | *have_default = 1; | |
1962 | } | |
1963 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1964 | { | |
1965 | struct symtab_and_line sal; | |
79a45b7d | 1966 | struct value_print_options opts; |
433759f7 | 1967 | |
c906108c SS |
1968 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1969 | values_printed = 1; | |
de5ad195 | 1970 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1971 | get_user_print_options (&opts); |
1972 | if (opts.addressprint) | |
c906108c SS |
1973 | { |
1974 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1975 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1976 | stream); | |
c906108c SS |
1977 | } |
1978 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1979 | sal.symtab->filename, sal.line); | |
1980 | } | |
1981 | } | |
033a42c2 | 1982 | |
c906108c SS |
1983 | return values_printed; |
1984 | } | |
65c06092 | 1985 | #endif |
c906108c | 1986 | |
2c58c0a9 PA |
1987 | /* Iterate over all the local variables in block B, including all its |
1988 | superblocks, stopping when the top-level block is reached. */ | |
1989 | ||
1990 | void | |
1991 | iterate_over_block_local_vars (struct block *block, | |
1992 | iterate_over_block_arg_local_vars_cb cb, | |
1993 | void *cb_data) | |
1994 | { | |
1995 | while (block) | |
1996 | { | |
1997 | iterate_over_block_locals (block, cb, cb_data); | |
1998 | /* After handling the function's top-level block, stop. Don't | |
1999 | continue to its superblock, the block of per-file | |
2000 | symbols. */ | |
2001 | if (BLOCK_FUNCTION (block)) | |
2002 | break; | |
2003 | block = BLOCK_SUPERBLOCK (block); | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | /* Data to be passed around in the calls to the locals and args | |
2008 | iterators. */ | |
c906108c | 2009 | |
2c58c0a9 PA |
2010 | struct print_variable_and_value_data |
2011 | { | |
8f043999 | 2012 | struct frame_id frame_id; |
2c58c0a9 PA |
2013 | int num_tabs; |
2014 | struct ui_file *stream; | |
2015 | int values_printed; | |
2016 | }; | |
2017 | ||
c378eb4e | 2018 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2019 | |
2020 | static void | |
2021 | do_print_variable_and_value (const char *print_name, | |
2022 | struct symbol *sym, | |
2023 | void *cb_data) | |
2024 | { | |
2025 | struct print_variable_and_value_data *p = cb_data; | |
8f043999 JK |
2026 | struct frame_info *frame; |
2027 | ||
2028 | frame = frame_find_by_id (p->frame_id); | |
2029 | if (frame == NULL) | |
2030 | { | |
2031 | warning (_("Unable to restore previously selected frame.")); | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2036 | ||
2037 | /* print_variable_and_value invalidates FRAME. */ | |
2038 | frame = NULL; | |
2c58c0a9 | 2039 | |
2c58c0a9 PA |
2040 | p->values_printed = 1; |
2041 | } | |
c906108c | 2042 | |
8f043999 JK |
2043 | /* Print all variables from the innermost up to the function block of FRAME. |
2044 | Print them with values to STREAM indented by NUM_TABS. | |
2045 | ||
2046 | This function will invalidate FRAME. */ | |
2047 | ||
c906108c | 2048 | static void |
033a42c2 | 2049 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2050 | struct ui_file *stream) |
c906108c | 2051 | { |
2c58c0a9 PA |
2052 | struct print_variable_and_value_data cb_data; |
2053 | struct block *block; | |
1d4f5741 PA |
2054 | CORE_ADDR pc; |
2055 | ||
2056 | if (!get_frame_pc_if_available (frame, &pc)) | |
2057 | { | |
2058 | fprintf_filtered (stream, | |
2059 | _("PC unavailable, cannot determine locals.\n")); | |
2060 | return; | |
2061 | } | |
c906108c | 2062 | |
2c58c0a9 | 2063 | block = get_frame_block (frame, 0); |
c906108c SS |
2064 | if (block == 0) |
2065 | { | |
2066 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2067 | return; | |
2068 | } | |
c5aa993b | 2069 | |
8f043999 | 2070 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2071 | cb_data.num_tabs = 4 * num_tabs; |
2072 | cb_data.stream = stream; | |
2073 | cb_data.values_printed = 0; | |
2074 | ||
2075 | iterate_over_block_local_vars (block, | |
2076 | do_print_variable_and_value, | |
2077 | &cb_data); | |
c906108c | 2078 | |
8f043999 JK |
2079 | /* do_print_variable_and_value invalidates FRAME. */ |
2080 | frame = NULL; | |
2081 | ||
2c58c0a9 | 2082 | if (!cb_data.values_printed) |
033a42c2 | 2083 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2084 | } |
2085 | ||
c906108c | 2086 | void |
fba45db2 | 2087 | locals_info (char *args, int from_tty) |
c906108c | 2088 | { |
033a42c2 | 2089 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2090 | 0, gdb_stdout); |
c906108c SS |
2091 | } |
2092 | ||
2c58c0a9 PA |
2093 | /* Iterate over all the argument variables in block B. |
2094 | ||
2095 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2096 | ||
2097 | void | |
2098 | iterate_over_block_arg_vars (struct block *b, | |
2099 | iterate_over_block_arg_local_vars_cb cb, | |
2100 | void *cb_data) | |
c906108c | 2101 | { |
8157b174 | 2102 | struct block_iterator iter; |
52f0bd74 | 2103 | struct symbol *sym, *sym2; |
c906108c | 2104 | |
de4f826b | 2105 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2106 | { |
2a2d4dc3 AS |
2107 | /* Don't worry about things which aren't arguments. */ |
2108 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2109 | { |
c906108c SS |
2110 | /* We have to look up the symbol because arguments can have |
2111 | two entries (one a parameter, one a local) and the one we | |
2112 | want is the local, which lookup_symbol will find for us. | |
2113 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2114 | small structure and gcc2 when the argument type is float | |
2115 | and it is passed as a double and converted to float by | |
2116 | the prologue (in the latter case the type of the LOC_ARG | |
2117 | symbol is double and the type of the LOC_LOCAL symbol is | |
2118 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2119 | are not combined in symbol-reading. */ | |
2120 | ||
3567439c | 2121 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 2122 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 2123 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2124 | } |
2125 | } | |
2c58c0a9 PA |
2126 | } |
2127 | ||
8f043999 JK |
2128 | /* Print all argument variables of the function of FRAME. |
2129 | Print them with values to STREAM. | |
2130 | ||
2131 | This function will invalidate FRAME. */ | |
2132 | ||
2c58c0a9 PA |
2133 | static void |
2134 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2135 | { | |
2136 | struct print_variable_and_value_data cb_data; | |
2137 | struct symbol *func; | |
1d4f5741 PA |
2138 | CORE_ADDR pc; |
2139 | ||
2140 | if (!get_frame_pc_if_available (frame, &pc)) | |
2141 | { | |
2142 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2143 | return; | |
2144 | } | |
2c58c0a9 PA |
2145 | |
2146 | func = get_frame_function (frame); | |
2147 | if (func == NULL) | |
2148 | { | |
2149 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2150 | return; | |
2151 | } | |
2152 | ||
8f043999 | 2153 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2154 | cb_data.num_tabs = 0; |
2155 | cb_data.stream = gdb_stdout; | |
2156 | cb_data.values_printed = 0; | |
2157 | ||
2158 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2159 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2160 | |
8f043999 JK |
2161 | /* do_print_variable_and_value invalidates FRAME. */ |
2162 | frame = NULL; | |
2163 | ||
2c58c0a9 | 2164 | if (!cb_data.values_printed) |
033a42c2 | 2165 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2166 | } |
2167 | ||
2168 | void | |
fba45db2 | 2169 | args_info (char *ignore, int from_tty) |
c906108c | 2170 | { |
033a42c2 | 2171 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2172 | gdb_stdout); |
c906108c SS |
2173 | } |
2174 | ||
2175 | ||
2176 | static void | |
fba45db2 | 2177 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 2178 | { |
c5aa993b JM |
2179 | args_info (ignore, from_tty); |
2180 | locals_info (ignore, from_tty); | |
c906108c | 2181 | } |
c906108c | 2182 | \f |
c5aa993b | 2183 | |
033a42c2 MK |
2184 | /* Select frame FRAME. Also print the stack frame and show the source |
2185 | if this is the tui version. */ | |
bedfa57b | 2186 | static void |
033a42c2 | 2187 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2188 | { |
033a42c2 MK |
2189 | select_frame (frame); |
2190 | if (frame) | |
08d72866 | 2191 | print_stack_frame (frame, 1, SRC_AND_LOC, 1); |
c906108c | 2192 | } |
c906108c | 2193 | \f |
c906108c | 2194 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2195 | Can return zero under various legitimate circumstances. |
2196 | ||
2197 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2198 | code address within the block returned. We use this to decide | |
2199 | which macros are in scope. */ | |
c906108c SS |
2200 | |
2201 | struct block * | |
ae767bfb | 2202 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2203 | { |
d729566a | 2204 | if (!has_stack_frames ()) |
8ea051c5 PA |
2205 | return 0; |
2206 | ||
206415a3 | 2207 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2208 | } |
2209 | ||
2210 | /* Find a frame a certain number of levels away from FRAME. | |
2211 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2212 | Positive means go to earlier frames (up); negative, the reverse. | |
2213 | The int that contains the number of levels is counted toward | |
2214 | zero as the frames for those levels are found. | |
2215 | If the top or bottom frame is reached, that frame is returned, | |
2216 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2217 | how much farther the original request asked to go. */ | |
2218 | ||
2219 | struct frame_info * | |
033a42c2 | 2220 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2221 | { |
033a42c2 MK |
2222 | /* Going up is simple: just call get_prev_frame enough times or |
2223 | until the initial frame is reached. */ | |
c906108c SS |
2224 | while (*level_offset_ptr > 0) |
2225 | { | |
033a42c2 | 2226 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2227 | |
033a42c2 | 2228 | if (!prev) |
c906108c SS |
2229 | break; |
2230 | (*level_offset_ptr)--; | |
2231 | frame = prev; | |
2232 | } | |
033a42c2 | 2233 | |
c906108c | 2234 | /* Going down is just as simple. */ |
033a42c2 | 2235 | while (*level_offset_ptr < 0) |
c906108c | 2236 | { |
033a42c2 | 2237 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2238 | |
033a42c2 MK |
2239 | if (!next) |
2240 | break; | |
2241 | (*level_offset_ptr)++; | |
2242 | frame = next; | |
c906108c | 2243 | } |
033a42c2 | 2244 | |
c906108c SS |
2245 | return frame; |
2246 | } | |
2247 | ||
033a42c2 MK |
2248 | /* The "select_frame" command. With no argument this is a NOP. |
2249 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2250 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2251 | ||
2252 | See parse_frame_specification for more info on proper frame | |
2253 | expressions. */ | |
c906108c | 2254 | |
8b93c638 | 2255 | void |
fba45db2 | 2256 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2257 | { |
1c8831c5 | 2258 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
2259 | } |
2260 | ||
033a42c2 MK |
2261 | /* The "frame" command. With no argument, print the selected frame |
2262 | briefly. With an argument, behave like select_frame and then print | |
2263 | the selected frame. */ | |
c906108c | 2264 | |
033a42c2 | 2265 | static void |
fba45db2 | 2266 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
2267 | { |
2268 | select_frame_command (level_exp, from_tty); | |
08d72866 | 2269 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2270 | } |
2271 | ||
033a42c2 | 2272 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 2273 | |
7a292a7a | 2274 | static void |
fba45db2 | 2275 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 2276 | { |
08d72866 | 2277 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC, 1); |
7a292a7a | 2278 | } |
c906108c | 2279 | |
033a42c2 MK |
2280 | /* Select the frame up one or COUNT_EXP stack levels from the |
2281 | previously selected frame, and print it briefly. */ | |
c906108c | 2282 | |
c906108c | 2283 | static void |
fba45db2 | 2284 | up_silently_base (char *count_exp) |
c906108c | 2285 | { |
033a42c2 MK |
2286 | struct frame_info *frame; |
2287 | int count = 1; | |
2288 | ||
c906108c | 2289 | if (count_exp) |
bb518678 | 2290 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2291 | |
033a42c2 MK |
2292 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2293 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2294 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2295 | select_frame (frame); |
c906108c SS |
2296 | } |
2297 | ||
2298 | static void | |
fba45db2 | 2299 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2300 | { |
c5aa993b | 2301 | up_silently_base (count_exp); |
c906108c SS |
2302 | } |
2303 | ||
2304 | static void | |
fba45db2 | 2305 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2306 | { |
2307 | up_silently_base (count_exp); | |
08d72866 | 2308 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2309 | } |
2310 | ||
033a42c2 MK |
2311 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2312 | selected frame, and print it briefly. */ | |
c906108c | 2313 | |
c906108c | 2314 | static void |
fba45db2 | 2315 | down_silently_base (char *count_exp) |
c906108c | 2316 | { |
52f0bd74 | 2317 | struct frame_info *frame; |
033a42c2 | 2318 | int count = -1; |
f89b749f | 2319 | |
c906108c | 2320 | if (count_exp) |
bb518678 | 2321 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2322 | |
033a42c2 MK |
2323 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2324 | if (count != 0 && count_exp == NULL) | |
c906108c | 2325 | { |
033a42c2 MK |
2326 | /* We only do this if COUNT_EXP is not specified. That way |
2327 | "down" means to really go down (and let me know if that is | |
2328 | impossible), but "down 9999" can be used to mean go all the | |
2329 | way down without getting an error. */ | |
c906108c | 2330 | |
033a42c2 | 2331 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2332 | } |
2333 | ||
0f7d239c | 2334 | select_frame (frame); |
c906108c SS |
2335 | } |
2336 | ||
c906108c | 2337 | static void |
fba45db2 | 2338 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2339 | { |
2340 | down_silently_base (count_exp); | |
c906108c SS |
2341 | } |
2342 | ||
2343 | static void | |
fba45db2 | 2344 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2345 | { |
2346 | down_silently_base (count_exp); | |
08d72866 | 2347 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2348 | } |
2349 | \f | |
033a42c2 | 2350 | |
8b93c638 | 2351 | void |
fba45db2 | 2352 | return_command (char *retval_exp, int from_tty) |
c906108c | 2353 | { |
901900c4 MGD |
2354 | /* Initialize it just to avoid a GCC false warning. */ |
2355 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2356 | struct frame_info *thisframe; |
d80b854b | 2357 | struct gdbarch *gdbarch; |
c906108c | 2358 | struct symbol *thisfun; |
3d6d86c6 | 2359 | struct value *return_value = NULL; |
6a3a010b | 2360 | struct value *function = NULL; |
fc70c2a0 | 2361 | const char *query_prefix = ""; |
c906108c | 2362 | |
5ed92fa8 UW |
2363 | thisframe = get_selected_frame ("No selected frame."); |
2364 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2365 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2366 | |
edb3359d DJ |
2367 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2368 | error (_("Can not force return from an inlined function.")); | |
2369 | ||
fc70c2a0 AC |
2370 | /* Compute the return value. If the computation triggers an error, |
2371 | let it bail. If the return type can't be handled, set | |
2372 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2373 | message. */ | |
c906108c SS |
2374 | if (retval_exp) |
2375 | { | |
61ff14c6 JK |
2376 | struct expression *retval_expr = parse_expression (retval_exp); |
2377 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2378 | struct type *return_type = NULL; |
2379 | ||
fc70c2a0 AC |
2380 | /* Compute the return value. Should the computation fail, this |
2381 | call throws an error. */ | |
61ff14c6 | 2382 | return_value = evaluate_expression (retval_expr); |
c906108c | 2383 | |
fc70c2a0 AC |
2384 | /* Cast return value to the return type of the function. Should |
2385 | the cast fail, this call throws an error. */ | |
c906108c SS |
2386 | if (thisfun != NULL) |
2387 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2388 | if (return_type == NULL) | |
61ff14c6 | 2389 | { |
9eaf6705 TT |
2390 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2391 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2392 | error (_("Return value type not available for selected " |
2393 | "stack frame.\n" | |
2394 | "Please use an explicit cast of the value to return.")); | |
2395 | return_type = value_type (return_value); | |
2396 | } | |
2397 | do_cleanups (old_chain); | |
3e9a183c | 2398 | CHECK_TYPEDEF (return_type); |
c906108c SS |
2399 | return_value = value_cast (return_type, return_value); |
2400 | ||
fc70c2a0 AC |
2401 | /* Make sure the value is fully evaluated. It may live in the |
2402 | stack frame we're about to pop. */ | |
d69fe07e | 2403 | if (value_lazy (return_value)) |
c906108c | 2404 | value_fetch_lazy (return_value); |
c906108c | 2405 | |
6a3a010b MR |
2406 | if (thisfun != NULL) |
2407 | function = read_var_value (thisfun, thisframe); | |
2408 | ||
bbfdfe1c | 2409 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2410 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2411 | /* If the return-type is "void", don't try to find the | |
2412 | return-value's location. However, do still evaluate the | |
2413 | return expression so that, even when the expression result | |
2414 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2415 | occur. */ |
667e784f | 2416 | return_value = NULL; |
bbfdfe1c | 2417 | else if (thisfun != NULL) |
fc70c2a0 | 2418 | { |
bbfdfe1c DM |
2419 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2420 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2421 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2422 | { | |
2423 | query_prefix = "The location at which to store the " | |
2424 | "function's return value is unknown.\n" | |
2425 | "If you continue, the return value " | |
2426 | "that you specified will be ignored.\n"; | |
2427 | return_value = NULL; | |
2428 | } | |
fc70c2a0 | 2429 | } |
c906108c SS |
2430 | } |
2431 | ||
fc70c2a0 AC |
2432 | /* Does an interactive user really want to do this? Include |
2433 | information, such as how well GDB can handle the return value, in | |
2434 | the query message. */ | |
2435 | if (from_tty) | |
2436 | { | |
2437 | int confirmed; | |
433759f7 | 2438 | |
fc70c2a0 | 2439 | if (thisfun == NULL) |
e2e0b3e5 | 2440 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2441 | query_prefix); |
2442 | else | |
e2e0b3e5 | 2443 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2444 | SYMBOL_PRINT_NAME (thisfun)); |
2445 | if (!confirmed) | |
8a3fe4f8 | 2446 | error (_("Not confirmed")); |
fc70c2a0 | 2447 | } |
c906108c | 2448 | |
a45ae3ed UW |
2449 | /* Discard the selected frame and all frames inner-to it. */ |
2450 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2451 | |
a1f5b845 | 2452 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2453 | if (return_value != NULL) |
2454 | { | |
df407dfe | 2455 | struct type *return_type = value_type (return_value); |
7500260a | 2456 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2457 | |
bbfdfe1c DM |
2458 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2459 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2460 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2461 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2462 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2463 | } |
1a2aab69 | 2464 | |
fc70c2a0 AC |
2465 | /* If we are at the end of a call dummy now, pop the dummy frame |
2466 | too. */ | |
e8bcf01f AC |
2467 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2468 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2469 | |
c906108c | 2470 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2471 | if (from_tty) |
2472 | frame_command ("0", 1); | |
2473 | else | |
2474 | select_frame_command ("0", 0); | |
2475 | } | |
2476 | ||
033a42c2 | 2477 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2478 | is within the current stack frame. */ |
c906108c SS |
2479 | |
2480 | struct function_bounds | |
2481 | { | |
2482 | CORE_ADDR low, high; | |
2483 | }; | |
2484 | ||
2485 | static void | |
fba45db2 | 2486 | func_command (char *arg, int from_tty) |
c906108c | 2487 | { |
033a42c2 | 2488 | struct frame_info *frame; |
c906108c SS |
2489 | int found = 0; |
2490 | struct symtabs_and_lines sals; | |
2491 | int i; | |
2492 | int level = 1; | |
033a42c2 | 2493 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2494 | struct cleanup *cleanups; |
c906108c | 2495 | |
033a42c2 | 2496 | if (arg != NULL) |
c906108c SS |
2497 | return; |
2498 | ||
033a42c2 | 2499 | frame = parse_frame_specification ("0"); |
39cf75f7 | 2500 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2501 | cleanups = make_cleanup (xfree, sals.sals); |
c906108c SS |
2502 | func_bounds = (struct function_bounds *) xmalloc ( |
2503 | sizeof (struct function_bounds) * sals.nelts); | |
f8eba3c6 | 2504 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2505 | for (i = 0; (i < sals.nelts && !found); i++) |
2506 | { | |
f8eba3c6 TT |
2507 | if (sals.sals[i].pspace != current_program_space) |
2508 | func_bounds[i].low = func_bounds[i].high = 0; | |
2509 | else if (sals.sals[i].pc == 0 | |
2510 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2511 | &func_bounds[i].low, | |
2512 | &func_bounds[i].high) == 0) | |
c906108c | 2513 | { |
033a42c2 | 2514 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2515 | } |
2516 | } | |
2517 | ||
2518 | do | |
2519 | { | |
2520 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2521 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2522 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2523 | if (!found) |
2524 | { | |
2525 | level = 1; | |
033a42c2 | 2526 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2527 | } |
2528 | } | |
2529 | while (!found && level == 0); | |
2530 | ||
f8eba3c6 | 2531 | do_cleanups (cleanups); |
c906108c SS |
2532 | |
2533 | if (!found) | |
a3f17187 | 2534 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2535 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2536 | select_and_print_frame (frame); |
c906108c SS |
2537 | } |
2538 | ||
2539 | /* Gets the language of the current frame. */ | |
2540 | ||
2541 | enum language | |
fba45db2 | 2542 | get_frame_language (void) |
c906108c | 2543 | { |
206415a3 | 2544 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2545 | |
033a42c2 | 2546 | if (frame) |
c906108c | 2547 | { |
e3eebbd7 PA |
2548 | volatile struct gdb_exception ex; |
2549 | CORE_ADDR pc = 0; | |
2550 | struct symtab *s; | |
2551 | ||
7ae4c3a5 | 2552 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2553 | associated symtab. To retrieve this symtab, we use the frame |
2554 | PC. However we cannot use the frame PC as is, because it | |
2555 | usually points to the instruction following the "call", which | |
2556 | is sometimes the first instruction of another function. So | |
2557 | we rely on get_frame_address_in_block(), it provides us with | |
2558 | a PC that is guaranteed to be inside the frame's code | |
2559 | block. */ | |
033a42c2 | 2560 | |
e3eebbd7 PA |
2561 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2562 | { | |
2563 | pc = get_frame_address_in_block (frame); | |
2564 | } | |
2565 | if (ex.reason < 0) | |
2566 | { | |
2567 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2568 | throw_exception (ex); | |
2569 | } | |
2570 | else | |
2571 | { | |
2572 | s = find_pc_symtab (pc); | |
2573 | if (s != NULL) | |
2574 | return s->language; | |
2575 | } | |
c906108c | 2576 | } |
c906108c | 2577 | |
033a42c2 | 2578 | return language_unknown; |
c906108c SS |
2579 | } |
2580 | \f | |
033a42c2 MK |
2581 | |
2582 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2583 | void _initialize_stack (void); | |
2584 | ||
c906108c | 2585 | void |
fba45db2 | 2586 | _initialize_stack (void) |
c906108c | 2587 | { |
1bedd215 AC |
2588 | add_com ("return", class_stack, return_command, _("\ |
2589 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2590 | Control remains in the debugger, but when you continue\n\ |
2591 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2592 | If an argument is given, it is an expression for the value to return.")); |
2593 | ||
2594 | add_com ("up", class_stack, up_command, _("\ | |
2595 | Select and print stack frame that called this one.\n\ | |
2596 | An argument says how many frames up to go.")); | |
2597 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2598 | Same as the `up' command, but does not print anything.\n\ | |
2599 | This is useful in command scripts.")); | |
2600 | ||
2601 | add_com ("down", class_stack, down_command, _("\ | |
2602 | Select and print stack frame called by this one.\n\ | |
2603 | An argument says how many frames down to go.")); | |
c906108c SS |
2604 | add_com_alias ("do", "down", class_stack, 1); |
2605 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2606 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2607 | Same as the `down' command, but does not print anything.\n\ | |
2608 | This is useful in command scripts.")); | |
c906108c | 2609 | |
1bedd215 | 2610 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2611 | Select and print a stack frame.\nWith no argument, \ |
2612 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2613 | An argument specifies the frame to select.\n\ |
2614 | It can be a stack frame number or the address of the frame.\n\ | |
2615 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2616 | a command file or a user-defined command.")); |
c906108c SS |
2617 | |
2618 | add_com_alias ("f", "frame", class_stack, 1); | |
2619 | ||
2620 | if (xdb_commands) | |
2621 | { | |
c5aa993b | 2622 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2623 | _("Print the current stack frame.\n")); |
c906108c SS |
2624 | add_com_alias ("V", "frame", class_stack, 1); |
2625 | } | |
1bedd215 AC |
2626 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2627 | Select a stack frame without printing anything.\n\ | |
c906108c | 2628 | An argument specifies the frame to select.\n\ |
1bedd215 | 2629 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2630 | |
1bedd215 AC |
2631 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2632 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2633 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2634 | 'full' qualifier also prints the values of the local variables.\n\ |
2635 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2636 | on this backtrace.\n")); | |
c906108c SS |
2637 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2638 | if (xdb_commands) | |
2639 | { | |
2640 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2641 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2642 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2643 | and the values of the local variables.\n\ |
2644 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2645 | Usage: T <count>\n")); |
c906108c SS |
2646 | } |
2647 | ||
2648 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2649 | add_info ("stack", backtrace_command, | |
1bedd215 | 2650 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2651 | add_info_alias ("s", "stack", 1); |
2652 | add_info ("frame", frame_info, | |
1bedd215 | 2653 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2654 | add_info_alias ("f", "frame", 1); |
2655 | add_info ("locals", locals_info, | |
1bedd215 | 2656 | _("Local variables of current stack frame.")); |
c906108c | 2657 | add_info ("args", args_info, |
1bedd215 | 2658 | _("Argument variables of current stack frame.")); |
c906108c | 2659 | if (xdb_commands) |
c5aa993b | 2660 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2661 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2662 | |
2663 | if (dbx_commands) | |
1bedd215 AC |
2664 | add_com ("func", class_stack, func_command, _("\ |
2665 | Select the stack frame that contains <func>.\n\ | |
2666 | Usage: func <name>\n")); | |
c906108c | 2667 | |
88408340 JB |
2668 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2669 | print_frame_arguments_choices, &print_frame_arguments, | |
2670 | _("Set printing of non-scalar frame arguments"), | |
2671 | _("Show printing of non-scalar frame arguments"), | |
2672 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2673 | ||
e7045703 DE |
2674 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2675 | &print_raw_frame_arguments, _("\ | |
2676 | Set whether to print frame arguments in raw form."), _("\ | |
2677 | Show whether to print frame arguments in raw form."), _("\ | |
2678 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2679 | pretty-printers for that value."), | |
2680 | NULL, NULL, | |
2681 | &setprintrawlist, &showprintrawlist); | |
2682 | ||
30c33a9f HZ |
2683 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2684 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2685 | Set whether to disassemble next source line or insn when execution stops."), |
2686 | _("\ | |
2687 | Show whether to disassemble next source line or insn when execution stops."), | |
2688 | _("\ | |
80a0ea0f EZ |
2689 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2690 | to displaying the source line itself. If the next source line cannot\n\ | |
2691 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2692 | will display disassembly of next instruction instead of showing the\n\ | |
2693 | source line.\n\ | |
2694 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2695 | cannot be displayed.\n\ | |
2696 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2697 | source line."), | |
30c33a9f HZ |
2698 | NULL, |
2699 | show_disassemble_next_line, | |
2700 | &setlist, &showlist); | |
a362e3d3 | 2701 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2702 | |
2703 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2704 | print_entry_values_choices, &print_entry_values, | |
2705 | _("Set printing of function arguments at function " | |
2706 | "entry"), | |
2707 | _("Show printing of function arguments at function " | |
2708 | "entry"), | |
2709 | _("\ | |
2710 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2711 | in addition to their current values. This option tells GDB whether\n\ | |
2712 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2713 | or both. Note that one or both of these values may be <optimized out>."), | |
2714 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2715 | } |