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