Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
c906108c | 20 | #include "defs.h" |
c906108c SS |
21 | #include "value.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "frame.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "gdbcore.h" | |
29 | #include "target.h" | |
0378c332 | 30 | #include "source.h" |
c906108c SS |
31 | #include "breakpoint.h" |
32 | #include "demangle.h" | |
33 | #include "inferior.h" | |
34 | #include "annotate.h" | |
8b93c638 | 35 | #include "ui-out.h" |
fe898f56 | 36 | #include "block.h" |
b9362cc7 | 37 | #include "stack.h" |
de4f826b | 38 | #include "dictionary.h" |
60250e8b | 39 | #include "exceptions.h" |
898c62f5 | 40 | #include "reggroups.h" |
fc70c2a0 | 41 | #include "regcache.h" |
a77053c2 | 42 | #include "solib.h" |
033a42c2 | 43 | #include "valprint.h" |
8ea051c5 | 44 | #include "gdbthread.h" |
3567439c | 45 | #include "cp-support.h" |
30c33a9f | 46 | #include "disasm.h" |
edb3359d | 47 | #include "inline-frame.h" |
f8eba3c6 | 48 | #include "linespec.h" |
529480d0 | 49 | #include "cli/cli-utils.h" |
c906108c | 50 | |
033a42c2 MK |
51 | #include "gdb_assert.h" |
52 | #include <ctype.h> | |
53 | #include "gdb_string.h" | |
c906108c | 54 | |
ccefe4c4 | 55 | #include "symfile.h" |
1e611234 | 56 | #include "python/python.h" |
ccefe4c4 | 57 | |
9a4105ab | 58 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 59 | |
2421fe6f | 60 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
61 | of this setting. */ |
62 | ||
40478521 | 63 | static const char *const print_frame_arguments_choices[] = |
88408340 | 64 | {"all", "scalars", "none", NULL}; |
476f7b68 | 65 | static const char *print_frame_arguments = "scalars"; |
88408340 | 66 | |
e7045703 DE |
67 | /* If non-zero, don't invoke pretty-printers for frame arguments. */ |
68 | static int print_raw_frame_arguments; | |
69 | ||
e18b2753 JK |
70 | /* The possible choices of "set print entry-values", and the value |
71 | of this setting. */ | |
72 | ||
73 | const char print_entry_values_no[] = "no"; | |
74 | const char print_entry_values_only[] = "only"; | |
75 | const char print_entry_values_preferred[] = "preferred"; | |
76 | const char print_entry_values_if_needed[] = "if-needed"; | |
77 | const char print_entry_values_both[] = "both"; | |
78 | const char print_entry_values_compact[] = "compact"; | |
79 | const char print_entry_values_default[] = "default"; | |
40478521 | 80 | static const char *const print_entry_values_choices[] = |
e18b2753 JK |
81 | { |
82 | print_entry_values_no, | |
83 | print_entry_values_only, | |
84 | print_entry_values_preferred, | |
85 | print_entry_values_if_needed, | |
86 | print_entry_values_both, | |
87 | print_entry_values_compact, | |
88 | print_entry_values_default, | |
89 | NULL | |
90 | }; | |
91 | const char *print_entry_values = print_entry_values_default; | |
92 | ||
c378eb4e | 93 | /* Prototypes for local functions. */ |
c906108c | 94 | |
d9fcf2fb JM |
95 | static void print_frame_local_vars (struct frame_info *, int, |
96 | struct ui_file *); | |
c906108c | 97 | |
033a42c2 MK |
98 | static void print_frame (struct frame_info *frame, int print_level, |
99 | enum print_what print_what, int print_args, | |
c5394b80 JM |
100 | struct symtab_and_line sal); |
101 | ||
1bfeeb0f JL |
102 | static void set_last_displayed_sal (int valid, |
103 | struct program_space *pspace, | |
104 | CORE_ADDR addr, | |
105 | struct symtab *symtab, | |
106 | int line); | |
107 | ||
c906108c SS |
108 | /* Zero means do things normally; we are interacting directly with the |
109 | user. One means print the full filename and linenumber when a | |
110 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
111 | parse. Two means print similar annotations, but in many more | |
112 | cases and in a slightly different syntax. */ | |
113 | ||
114 | int annotation_level = 0; | |
1bfeeb0f JL |
115 | |
116 | /* These variables hold the last symtab and line we displayed to the user. | |
117 | * This is where we insert a breakpoint or a skiplist entry by default. */ | |
118 | static int last_displayed_sal_valid = 0; | |
119 | static struct program_space *last_displayed_pspace = 0; | |
120 | static CORE_ADDR last_displayed_addr = 0; | |
121 | static struct symtab *last_displayed_symtab = 0; | |
122 | static int last_displayed_line = 0; | |
c906108c | 123 | \f |
c5aa993b | 124 | |
edb3359d DJ |
125 | /* Return 1 if we should display the address in addition to the location, |
126 | because we are in the middle of a statement. */ | |
127 | ||
128 | static int | |
129 | frame_show_address (struct frame_info *frame, | |
130 | struct symtab_and_line sal) | |
131 | { | |
132 | /* If there is a line number, but no PC, then there is no location | |
133 | information associated with this sal. The only way that should | |
134 | happen is for the call sites of inlined functions (SAL comes from | |
135 | find_frame_sal). Otherwise, we would have some PC range if the | |
136 | SAL came from a line table. */ | |
137 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
138 | { | |
139 | if (get_next_frame (frame) == NULL) | |
140 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
141 | else | |
142 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | return get_frame_pc (frame) != sal.pc; | |
147 | } | |
148 | ||
033a42c2 | 149 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
150 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
151 | relative level, function name, argument list, and file name and | |
152 | line number. If the frame's PC is not at the beginning of the | |
153 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
154 | |
155 | void | |
033a42c2 | 156 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 157 | enum print_what print_what) |
c906108c | 158 | { |
311b5970 | 159 | volatile struct gdb_exception e; |
c906108c | 160 | |
aaf9e9fd | 161 | /* For mi, alway print location and address. */ |
79a45e25 | 162 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 163 | print_what = LOC_AND_ADDRESS; |
c906108c | 164 | |
311b5970 JK |
165 | TRY_CATCH (e, RETURN_MASK_ERROR) |
166 | { | |
167 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); | |
c906108c | 168 | |
311b5970 JK |
169 | print_frame_info (frame, print_level, print_what, 1 /* print_args */); |
170 | set_current_sal_from_frame (frame, center); | |
171 | } | |
172 | } | |
c906108c | 173 | |
033a42c2 MK |
174 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
175 | the offset of the first nameless argument, and NUM is the number of | |
176 | nameless arguments to print. FIRST is nonzero if this is the first | |
177 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
178 | |
179 | static void | |
033a42c2 | 180 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
181 | int first, struct ui_file *stream) |
182 | { | |
e17a4113 UW |
183 | struct gdbarch *gdbarch = get_frame_arch (frame); |
184 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
185 | int i; |
186 | CORE_ADDR argsaddr; | |
187 | long arg_value; | |
188 | ||
189 | for (i = 0; i < num; i++) | |
190 | { | |
191 | QUIT; | |
033a42c2 | 192 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
193 | if (!argsaddr) |
194 | return; | |
e17a4113 UW |
195 | arg_value = read_memory_integer (argsaddr + start, |
196 | sizeof (int), byte_order); | |
8d3b0994 AC |
197 | if (!first) |
198 | fprintf_filtered (stream, ", "); | |
199 | fprintf_filtered (stream, "%ld", arg_value); | |
200 | first = 0; | |
201 | start += sizeof (int); | |
202 | } | |
203 | } | |
204 | ||
93d86cef JK |
205 | /* Print single argument of inferior function. ARG must be already |
206 | read in. | |
207 | ||
208 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
209 | iff it should not be printed accoring to user settings. */ | |
210 | ||
211 | static void | |
212 | print_frame_arg (const struct frame_arg *arg) | |
213 | { | |
214 | struct ui_out *uiout = current_uiout; | |
215 | volatile struct gdb_exception except; | |
216 | struct cleanup *old_chain; | |
f99d8bf4 | 217 | struct ui_file *stb; |
93d86cef | 218 | |
f99d8bf4 PA |
219 | stb = mem_fileopen (); |
220 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
221 | |
222 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
223 | gdb_assert (arg->entry_kind == print_entry_values_no |
224 | || arg->entry_kind == print_entry_values_only | |
225 | || (!ui_out_is_mi_like_p (uiout) | |
226 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
227 | |
228 | annotate_arg_begin (); | |
229 | ||
230 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
f99d8bf4 | 231 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 232 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
233 | if (arg->entry_kind == print_entry_values_compact) |
234 | { | |
235 | /* It is OK to provide invalid MI-like stream as with | |
236 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
f99d8bf4 | 237 | fputs_filtered ("=", stb); |
e18b2753 | 238 | |
f99d8bf4 | 239 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
240 | SYMBOL_LANGUAGE (arg->sym), |
241 | DMGL_PARAMS | DMGL_ANSI); | |
242 | } | |
243 | if (arg->entry_kind == print_entry_values_only | |
244 | || arg->entry_kind == print_entry_values_compact) | |
f99d8bf4 | 245 | fputs_filtered ("@entry", stb); |
93d86cef JK |
246 | ui_out_field_stream (uiout, "name", stb); |
247 | annotate_arg_name_end (); | |
248 | ui_out_text (uiout, "="); | |
249 | ||
250 | if (!arg->val && !arg->error) | |
251 | ui_out_text (uiout, "..."); | |
252 | else | |
253 | { | |
254 | if (arg->error) | |
255 | except.message = arg->error; | |
256 | else | |
257 | { | |
258 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
259 | ||
260 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
261 | { | |
262 | const struct language_defn *language; | |
263 | struct value_print_options opts; | |
264 | ||
265 | /* Avoid value_print because it will deref ref parameters. We | |
266 | just want to print their addresses. Print ??? for args whose | |
267 | address we do not know. We pass 2 as "recurse" to val_print | |
268 | because our standard indentation here is 4 spaces, and | |
269 | val_print indents 2 for each recurse. */ | |
270 | ||
271 | annotate_arg_value (value_type (arg->val)); | |
272 | ||
273 | /* Use the appropriate language to display our symbol, unless the | |
274 | user forced the language to a specific language. */ | |
275 | if (language_mode == language_mode_auto) | |
276 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
277 | else | |
278 | language = current_language; | |
279 | ||
2a998fc0 | 280 | get_no_prettyformat_print_options (&opts); |
3343315b | 281 | opts.deref_ref = 1; |
e7045703 | 282 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
283 | |
284 | /* True in "summary" mode, false otherwise. */ | |
285 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
286 | ||
f99d8bf4 | 287 | common_val_print (arg->val, stb, 2, &opts, language); |
93d86cef JK |
288 | } |
289 | } | |
290 | if (except.message) | |
f99d8bf4 | 291 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
93d86cef JK |
292 | except.message); |
293 | } | |
294 | ||
295 | ui_out_field_stream (uiout, "value", stb); | |
296 | ||
f99d8bf4 | 297 | /* Also invoke ui_out_tuple_end. */ |
93d86cef JK |
298 | do_cleanups (old_chain); |
299 | ||
300 | annotate_arg_end (); | |
301 | } | |
302 | ||
82a0a75f YQ |
303 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
304 | responsible for xfree of ARGP->ERROR. This function never throws an | |
305 | exception. */ | |
306 | ||
307 | void | |
308 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
309 | struct frame_arg *argp) | |
310 | { | |
311 | volatile struct gdb_exception except; | |
312 | struct value *val = NULL; | |
313 | ||
314 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
315 | { | |
316 | val = read_var_value (sym, frame); | |
317 | } | |
318 | ||
319 | argp->error = (val == NULL) ? xstrdup (except.message) : NULL; | |
320 | argp->sym = sym; | |
321 | argp->val = val; | |
322 | } | |
323 | ||
93d86cef JK |
324 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is |
325 | responsible for xfree of ARGP->ERROR. This function never throws an | |
326 | exception. */ | |
327 | ||
328 | void | |
329 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 330 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 331 | { |
e18b2753 JK |
332 | struct value *val = NULL, *entryval = NULL; |
333 | char *val_error = NULL, *entryval_error = NULL; | |
334 | int val_equal = 0; | |
93d86cef JK |
335 | volatile struct gdb_exception except; |
336 | ||
e18b2753 JK |
337 | if (print_entry_values != print_entry_values_only |
338 | && print_entry_values != print_entry_values_preferred) | |
339 | { | |
340 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
341 | { | |
342 | val = read_var_value (sym, frame); | |
343 | } | |
344 | if (!val) | |
345 | { | |
346 | val_error = alloca (strlen (except.message) + 1); | |
347 | strcpy (val_error, except.message); | |
348 | } | |
349 | } | |
350 | ||
24d6c2a0 TT |
351 | if (SYMBOL_COMPUTED_OPS (sym) != NULL |
352 | && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL | |
e18b2753 JK |
353 | && print_entry_values != print_entry_values_no |
354 | && (print_entry_values != print_entry_values_if_needed | |
355 | || !val || value_optimized_out (val))) | |
356 | { | |
357 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
358 | { | |
359 | const struct symbol_computed_ops *ops; | |
360 | ||
361 | ops = SYMBOL_COMPUTED_OPS (sym); | |
362 | entryval = ops->read_variable_at_entry (sym, frame); | |
363 | } | |
364 | if (!entryval) | |
365 | { | |
366 | entryval_error = alloca (strlen (except.message) + 1); | |
367 | strcpy (entryval_error, except.message); | |
368 | } | |
369 | ||
370 | if (except.error == NO_ENTRY_VALUE_ERROR | |
371 | || (entryval && value_optimized_out (entryval))) | |
372 | { | |
373 | entryval = NULL; | |
374 | entryval_error = NULL; | |
375 | } | |
376 | ||
377 | if (print_entry_values == print_entry_values_compact | |
378 | || print_entry_values == print_entry_values_default) | |
379 | { | |
380 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
381 | ||
382 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
383 | { | |
744a8059 | 384 | struct type *type = value_type (val); |
e18b2753 | 385 | |
e18b2753 | 386 | if (!value_optimized_out (val) |
744a8059 SP |
387 | && value_available_contents_eq (val, 0, entryval, 0, |
388 | TYPE_LENGTH (type))) | |
e18b2753 | 389 | { |
509f0fd9 JK |
390 | /* Initialize it just to avoid a GCC false warning. */ |
391 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
392 | |
393 | /* DW_AT_GNU_call_site_value does match with the current | |
394 | value. If it is a reference still try to verify if | |
395 | dereferenced DW_AT_GNU_call_site_data_value does not | |
396 | differ. */ | |
397 | ||
398 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
399 | { | |
744a8059 | 400 | struct type *type_deref; |
a471c594 JK |
401 | |
402 | val_deref = coerce_ref (val); | |
403 | if (value_lazy (val_deref)) | |
404 | value_fetch_lazy (val_deref); | |
744a8059 | 405 | type_deref = value_type (val_deref); |
a471c594 JK |
406 | |
407 | entryval_deref = coerce_ref (entryval); | |
408 | if (value_lazy (entryval_deref)) | |
409 | value_fetch_lazy (entryval_deref); | |
410 | ||
411 | /* If the reference addresses match but dereferenced | |
412 | content does not match print them. */ | |
413 | if (val != val_deref | |
414 | && value_available_contents_eq (val_deref, 0, | |
415 | entryval_deref, 0, | |
744a8059 | 416 | TYPE_LENGTH (type_deref))) |
a471c594 JK |
417 | val_equal = 1; |
418 | } | |
419 | ||
420 | /* Value was not a reference; and its content matches. */ | |
421 | if (val == val_deref) | |
422 | val_equal = 1; | |
423 | /* If the dereferenced content could not be fetched do not | |
424 | display anything. */ | |
425 | else if (except.error == NO_ENTRY_VALUE_ERROR) | |
426 | val_equal = 1; | |
427 | else if (except.message) | |
428 | { | |
429 | entryval_error = alloca (strlen (except.message) + 1); | |
430 | strcpy (entryval_error, except.message); | |
431 | } | |
432 | ||
433 | if (val_equal) | |
434 | entryval = NULL; | |
e18b2753 JK |
435 | } |
436 | } | |
437 | ||
438 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
439 | in MI mode. */ | |
440 | ||
441 | if (val_error && entryval_error | |
442 | && strcmp (val_error, entryval_error) == 0) | |
443 | { | |
444 | entryval_error = NULL; | |
445 | ||
446 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
447 | the entry value even if no entry values are present in the | |
448 | inferior. */ | |
449 | } | |
450 | } | |
451 | } | |
452 | ||
453 | if (entryval == NULL) | |
93d86cef | 454 | { |
e18b2753 JK |
455 | if (print_entry_values == print_entry_values_preferred) |
456 | { | |
457 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
458 | { | |
459 | val = read_var_value (sym, frame); | |
460 | } | |
461 | if (!val) | |
462 | { | |
463 | val_error = alloca (strlen (except.message) + 1); | |
464 | strcpy (val_error, except.message); | |
465 | } | |
466 | } | |
467 | if (print_entry_values == print_entry_values_only | |
468 | || print_entry_values == print_entry_values_both | |
469 | || (print_entry_values == print_entry_values_preferred | |
470 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
471 | { |
472 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
473 | entryval_error = NULL; | |
474 | } | |
93d86cef | 475 | } |
e18b2753 JK |
476 | if ((print_entry_values == print_entry_values_compact |
477 | || print_entry_values == print_entry_values_if_needed | |
478 | || print_entry_values == print_entry_values_preferred) | |
479 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 480 | { |
e18b2753 JK |
481 | val = NULL; |
482 | val_error = NULL; | |
93d86cef JK |
483 | } |
484 | ||
485 | argp->sym = sym; | |
486 | argp->val = val; | |
487 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
488 | if (!val && !val_error) |
489 | argp->entry_kind = print_entry_values_only; | |
490 | else if ((print_entry_values == print_entry_values_compact | |
491 | || print_entry_values == print_entry_values_default) && val_equal) | |
492 | { | |
493 | argp->entry_kind = print_entry_values_compact; | |
494 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
495 | } | |
496 | else | |
497 | argp->entry_kind = print_entry_values_no; | |
498 | ||
499 | entryargp->sym = sym; | |
500 | entryargp->val = entryval; | |
501 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
502 | if (!entryval && !entryval_error) | |
503 | entryargp->entry_kind = print_entry_values_no; | |
504 | else | |
505 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
506 | } |
507 | ||
033a42c2 MK |
508 | /* Print the arguments of frame FRAME on STREAM, given the function |
509 | FUNC running in that frame (as a symbol), where NUM is the number | |
510 | of arguments according to the stack frame (or -1 if the number of | |
511 | arguments is unknown). */ | |
8d3b0994 | 512 | |
e3168615 | 513 | /* Note that currently the "number of arguments according to the |
033a42c2 | 514 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 515 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
516 | |
517 | static void | |
033a42c2 MK |
518 | print_frame_args (struct symbol *func, struct frame_info *frame, |
519 | int num, struct ui_file *stream) | |
8d3b0994 | 520 | { |
79a45e25 | 521 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 522 | int first = 1; |
8d3b0994 | 523 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
524 | at the highest offset, or -1 if we haven't come to a stack |
525 | argument yet. */ | |
8d3b0994 | 526 | long highest_offset = -1; |
8d3b0994 AC |
527 | /* Number of ints of arguments that we have printed so far. */ |
528 | int args_printed = 0; | |
22e048c9 | 529 | struct cleanup *old_chain; |
f99d8bf4 | 530 | struct ui_file *stb; |
a6bac58e TT |
531 | /* True if we should print arguments, false otherwise. */ |
532 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 533 | |
f99d8bf4 PA |
534 | stb = mem_fileopen (); |
535 | old_chain = make_cleanup_ui_file_delete (stb); | |
8d3b0994 AC |
536 | |
537 | if (func) | |
538 | { | |
033a42c2 | 539 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 540 | struct block_iterator iter; |
033a42c2 | 541 | struct symbol *sym; |
8d3b0994 | 542 | |
de4f826b | 543 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 544 | { |
e18b2753 | 545 | struct frame_arg arg, entryarg; |
93d86cef | 546 | |
8d3b0994 AC |
547 | QUIT; |
548 | ||
549 | /* Keep track of the highest stack argument offset seen, and | |
550 | skip over any kinds of symbols we don't care about. */ | |
551 | ||
2a2d4dc3 AS |
552 | if (!SYMBOL_IS_ARGUMENT (sym)) |
553 | continue; | |
554 | ||
8d3b0994 AC |
555 | switch (SYMBOL_CLASS (sym)) |
556 | { | |
557 | case LOC_ARG: | |
558 | case LOC_REF_ARG: | |
559 | { | |
560 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 561 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
562 | |
563 | /* Compute address of next argument by adding the size of | |
564 | this argument and rounding to an int boundary. */ | |
565 | current_offset = | |
566 | ((current_offset + arg_size + sizeof (int) - 1) | |
567 | & ~(sizeof (int) - 1)); | |
568 | ||
033a42c2 MK |
569 | /* If this is the highest offset seen yet, set |
570 | highest_offset. */ | |
8d3b0994 AC |
571 | if (highest_offset == -1 |
572 | || (current_offset > highest_offset)) | |
573 | highest_offset = current_offset; | |
574 | ||
033a42c2 MK |
575 | /* Add the number of ints we're about to print to |
576 | args_printed. */ | |
8d3b0994 AC |
577 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
578 | } | |
579 | ||
033a42c2 MK |
580 | /* We care about types of symbols, but don't need to |
581 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 582 | case LOC_REGISTER: |
8d3b0994 | 583 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
584 | case LOC_COMPUTED: |
585 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 586 | default: |
2a2d4dc3 | 587 | break; |
8d3b0994 AC |
588 | } |
589 | ||
590 | /* We have to look up the symbol because arguments can have | |
591 | two entries (one a parameter, one a local) and the one we | |
592 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 593 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
594 | small structure and gcc2 when the argument type is float |
595 | and it is passed as a double and converted to float by | |
596 | the prologue (in the latter case the type of the LOC_ARG | |
597 | symbol is double and the type of the LOC_LOCAL symbol is | |
598 | float). */ | |
033a42c2 MK |
599 | /* But if the parameter name is null, don't try it. Null |
600 | parameter names occur on the RS/6000, for traceback | |
601 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 602 | |
3567439c | 603 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
604 | { |
605 | struct symbol *nsym; | |
433759f7 | 606 | |
3567439c | 607 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 608 | b, VAR_DOMAIN, NULL); |
55765a25 | 609 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
610 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
611 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 612 | { |
033a42c2 MK |
613 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
614 | that it was passed on the stack and loaded into a | |
615 | register, or passed in a register and stored in a | |
616 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
617 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
618 | |
619 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
620 | |
621 | (1) Because find_saved_registers may be slow for | |
622 | remote debugging. | |
623 | ||
624 | (2) Because registers are often re-used and stack | |
625 | slots rarely (never?) are. Therefore using | |
626 | the stack slot is much less likely to print | |
627 | garbage. | |
8d3b0994 AC |
628 | |
629 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
630 | |
631 | (1) So that the backtrace prints the same value | |
632 | as "print foo". I see no compelling reason | |
633 | why this needs to be the case; having the | |
634 | backtrace print the value which was passed | |
635 | in, and "print foo" print the value as | |
636 | modified within the called function, makes | |
637 | perfect sense to me. | |
638 | ||
639 | Additional note: It might be nice if "info args" | |
640 | displayed both values. | |
641 | ||
642 | One more note: There is a case with SPARC | |
643 | structure passing where we need to use the | |
644 | LOC_REGISTER, but this is dealt with by creating | |
645 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
646 | |
647 | /* Leave sym (the LOC_ARG) alone. */ | |
648 | ; | |
649 | } | |
650 | else | |
651 | sym = nsym; | |
652 | } | |
653 | ||
654 | /* Print the current arg. */ | |
655 | if (!first) | |
656 | ui_out_text (uiout, ", "); | |
657 | ui_out_wrap_hint (uiout, " "); | |
658 | ||
93d86cef JK |
659 | if (!print_args) |
660 | { | |
661 | memset (&arg, 0, sizeof (arg)); | |
662 | arg.sym = sym; | |
e18b2753 JK |
663 | arg.entry_kind = print_entry_values_no; |
664 | memset (&entryarg, 0, sizeof (entryarg)); | |
665 | entryarg.sym = sym; | |
666 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
667 | } |
668 | else | |
e18b2753 | 669 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 670 | |
e18b2753 JK |
671 | if (arg.entry_kind != print_entry_values_only) |
672 | print_frame_arg (&arg); | |
673 | ||
674 | if (entryarg.entry_kind != print_entry_values_no) | |
675 | { | |
676 | if (arg.entry_kind != print_entry_values_only) | |
677 | { | |
678 | ui_out_text (uiout, ", "); | |
679 | ui_out_wrap_hint (uiout, " "); | |
680 | } | |
681 | ||
682 | print_frame_arg (&entryarg); | |
683 | } | |
8d3b0994 | 684 | |
93d86cef | 685 | xfree (arg.error); |
e18b2753 | 686 | xfree (entryarg.error); |
8d3b0994 AC |
687 | |
688 | first = 0; | |
689 | } | |
690 | } | |
691 | ||
692 | /* Don't print nameless args in situations where we don't know | |
693 | enough about the stack to find them. */ | |
694 | if (num != -1) | |
695 | { | |
696 | long start; | |
697 | ||
698 | if (highest_offset == -1) | |
7500260a | 699 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
700 | else |
701 | start = highest_offset; | |
702 | ||
033a42c2 | 703 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
704 | first, stream); |
705 | } | |
033a42c2 | 706 | |
8d3b0994 AC |
707 | do_cleanups (old_chain); |
708 | } | |
709 | ||
033a42c2 MK |
710 | /* Set the current source and line to the location given by frame |
711 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
712 | line is in the center of the next 'list'. */ | |
c789492a | 713 | |
7abfe014 | 714 | void |
033a42c2 | 715 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
716 | { |
717 | struct symtab_and_line sal; | |
718 | ||
033a42c2 | 719 | find_frame_sal (frame, &sal); |
c789492a FL |
720 | if (sal.symtab) |
721 | { | |
722 | if (center) | |
723 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
724 | set_current_source_symtab_and_line (&sal); | |
725 | } | |
726 | } | |
727 | ||
30c33a9f HZ |
728 | /* If ON, GDB will display disassembly of the next source line when |
729 | execution of the program being debugged stops. | |
481df73e HZ |
730 | If AUTO (which is the default), or there's no line info to determine |
731 | the source line of the next instruction, display disassembly of next | |
732 | instruction instead. */ | |
30c33a9f HZ |
733 | |
734 | static enum auto_boolean disassemble_next_line; | |
735 | ||
736 | static void | |
737 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
738 | struct cmd_list_element *c, | |
739 | const char *value) | |
740 | { | |
3e43a32a MS |
741 | fprintf_filtered (file, |
742 | _("Debugger's willingness to use " | |
743 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
744 | value); |
745 | } | |
746 | ||
30c33a9f HZ |
747 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
748 | because it will be broken by filter sometime. */ | |
749 | ||
750 | static void | |
13274fc3 UW |
751 | do_gdb_disassembly (struct gdbarch *gdbarch, |
752 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
753 | { |
754 | volatile struct gdb_exception exception; | |
30c33a9f | 755 | |
b1d288d3 | 756 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 757 | { |
79a45e25 PA |
758 | gdb_disassembly (gdbarch, current_uiout, 0, |
759 | DISASSEMBLY_RAW_INSN, how_many, | |
760 | low, high); | |
30c33a9f | 761 | } |
b1d288d3 JK |
762 | if (exception.reason < 0) |
763 | { | |
764 | /* If an exception was thrown while doing the disassembly, print | |
765 | the error message, to give the user a clue of what happened. */ | |
766 | exception_print (gdb_stderr, exception); | |
767 | } | |
30c33a9f HZ |
768 | } |
769 | ||
033a42c2 | 770 | /* Print information about frame FRAME. The output is format according |
65aa373f | 771 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
772 | PRINT_WHAT is: |
773 | ||
774 | SRC_LINE: Print only source line. | |
775 | LOCATION: Print only location. | |
776 | LOC_AND_SRC: Print location and source line. | |
777 | ||
778 | Used in "where" output, and to emit breakpoint or step | |
779 | messages. */ | |
c906108c | 780 | |
7789c6f5 | 781 | void |
033a42c2 | 782 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 783 | enum print_what print_what, int print_args) |
c906108c | 784 | { |
5af949e3 | 785 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 786 | struct symtab_and_line sal; |
c5394b80 JM |
787 | int source_print; |
788 | int location_print; | |
79a45e25 | 789 | struct ui_out *uiout = current_uiout; |
c906108c | 790 | |
033a42c2 | 791 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
792 | || get_frame_type (frame) == SIGTRAMP_FRAME |
793 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 794 | { |
075559bc AC |
795 | struct cleanup *uiout_cleanup |
796 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 797 | |
033a42c2 | 798 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 799 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 800 | |
c906108c | 801 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 802 | to list for this frame. */ |
0faf0076 | 803 | if (print_level) |
52c6a6ac JJ |
804 | { |
805 | ui_out_text (uiout, "#"); | |
0faf0076 | 806 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 807 | frame_relative_level (frame)); |
52c6a6ac | 808 | } |
075559bc | 809 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 810 | { |
075559bc | 811 | annotate_frame_address (); |
5af949e3 UW |
812 | ui_out_field_core_addr (uiout, "addr", |
813 | gdbarch, get_frame_pc (frame)); | |
075559bc | 814 | annotate_frame_address_end (); |
52c6a6ac | 815 | } |
6a3fe0a4 | 816 | |
033a42c2 | 817 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
818 | { |
819 | annotate_function_call (); | |
820 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
821 | } | |
033a42c2 | 822 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
823 | { |
824 | annotate_signal_handler_caller (); | |
825 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
826 | } | |
36f15f55 UW |
827 | else if (get_frame_type (frame) == ARCH_FRAME) |
828 | { | |
829 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
830 | } | |
075559bc | 831 | ui_out_text (uiout, "\n"); |
c906108c | 832 | annotate_frame_end (); |
075559bc AC |
833 | |
834 | do_cleanups (uiout_cleanup); | |
c906108c SS |
835 | return; |
836 | } | |
837 | ||
033a42c2 MK |
838 | /* If FRAME is not the innermost frame, that normally means that |
839 | FRAME->pc points to *after* the call instruction, and we want to | |
840 | get the line containing the call, never the next line. But if | |
841 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
842 | next frame was not entered as the result of a call, and we want | |
843 | to get the line containing FRAME->pc. */ | |
844 | find_frame_sal (frame, &sal); | |
c906108c | 845 | |
0faf0076 AC |
846 | location_print = (print_what == LOCATION |
847 | || print_what == LOC_AND_ADDRESS | |
848 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
849 | |
850 | if (location_print || !sal.symtab) | |
033a42c2 | 851 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 852 | |
0faf0076 | 853 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 854 | |
30c33a9f HZ |
855 | /* If disassemble-next-line is set to auto or on and doesn't have |
856 | the line debug messages for $pc, output the next instruction. */ | |
857 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
858 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
859 | && source_print && !sal.symtab) | |
13274fc3 UW |
860 | do_gdb_disassembly (get_frame_arch (frame), 1, |
861 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 862 | |
c5394b80 JM |
863 | if (source_print && sal.symtab) |
864 | { | |
865 | int done = 0; | |
0faf0076 | 866 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 867 | && frame_show_address (frame, sal)); |
c5394b80 JM |
868 | |
869 | if (annotation_level) | |
870 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 871 | get_frame_pc (frame)); |
c5394b80 JM |
872 | if (!done) |
873 | { | |
9a4105ab | 874 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
875 | deprecated_print_frame_info_listing_hook (sal.symtab, |
876 | sal.line, | |
877 | sal.line + 1, 0); | |
ba4bbdcb | 878 | else |
c5394b80 | 879 | { |
79a45b7d | 880 | struct value_print_options opts; |
433759f7 | 881 | |
79a45b7d | 882 | get_user_print_options (&opts); |
ba4bbdcb | 883 | /* We used to do this earlier, but that is clearly |
c378eb4e | 884 | wrong. This function is used by many different |
ba4bbdcb KS |
885 | parts of gdb, including normal_stop in infrun.c, |
886 | which uses this to print out the current PC | |
887 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
888 | line. Only the command line really wants this |
889 | behavior. Other UIs probably would like the | |
cbd3c883 | 890 | ability to decide for themselves if it is desired. */ |
79a45b7d | 891 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 892 | { |
5af949e3 UW |
893 | ui_out_field_core_addr (uiout, "addr", |
894 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 895 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
896 | } |
897 | ||
898 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 899 | } |
c5394b80 | 900 | } |
30c33a9f HZ |
901 | |
902 | /* If disassemble-next-line is set to on and there is line debug | |
903 | messages, output assembly codes for next line. */ | |
904 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 905 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
906 | } |
907 | ||
0faf0076 | 908 | if (print_what != LOCATION) |
e3eebbd7 PA |
909 | { |
910 | CORE_ADDR pc; | |
911 | ||
912 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 913 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 914 | else |
1bfeeb0f | 915 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 916 | } |
c5394b80 JM |
917 | |
918 | annotate_frame_end (); | |
919 | ||
920 | gdb_flush (gdb_stdout); | |
921 | } | |
922 | ||
1bfeeb0f JL |
923 | /* Remember the last symtab and line we displayed, which we use e.g. |
924 | * as the place to put a breakpoint when the `break' command is | |
925 | * invoked with no arguments. */ | |
926 | ||
927 | static void | |
928 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
929 | CORE_ADDR addr, struct symtab *symtab, | |
930 | int line) | |
931 | { | |
932 | last_displayed_sal_valid = valid; | |
933 | last_displayed_pspace = pspace; | |
934 | last_displayed_addr = addr; | |
935 | last_displayed_symtab = symtab; | |
936 | last_displayed_line = line; | |
4cb6da1c AR |
937 | if (valid && pspace == NULL) |
938 | { | |
4cb6da1c | 939 | clear_last_displayed_sal (); |
e36930bb PA |
940 | internal_error (__FILE__, __LINE__, |
941 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 942 | } |
1bfeeb0f JL |
943 | } |
944 | ||
945 | /* Forget the last sal we displayed. */ | |
946 | ||
947 | void | |
948 | clear_last_displayed_sal (void) | |
949 | { | |
950 | last_displayed_sal_valid = 0; | |
951 | last_displayed_pspace = 0; | |
952 | last_displayed_addr = 0; | |
953 | last_displayed_symtab = 0; | |
954 | last_displayed_line = 0; | |
955 | } | |
956 | ||
957 | /* Is our record of the last sal we displayed valid? If not, | |
958 | * the get_last_displayed_* functions will return NULL or 0, as | |
959 | * appropriate. */ | |
960 | ||
961 | int | |
962 | last_displayed_sal_is_valid (void) | |
963 | { | |
964 | return last_displayed_sal_valid; | |
965 | } | |
966 | ||
967 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
968 | ||
969 | struct program_space * | |
970 | get_last_displayed_pspace (void) | |
971 | { | |
972 | if (last_displayed_sal_valid) | |
973 | return last_displayed_pspace; | |
974 | return 0; | |
975 | } | |
976 | ||
977 | /* Get the address of the last sal we displayed, if it's valid. */ | |
978 | ||
979 | CORE_ADDR | |
980 | get_last_displayed_addr (void) | |
981 | { | |
982 | if (last_displayed_sal_valid) | |
983 | return last_displayed_addr; | |
984 | return 0; | |
985 | } | |
986 | ||
987 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
988 | ||
989 | struct symtab* | |
990 | get_last_displayed_symtab (void) | |
991 | { | |
992 | if (last_displayed_sal_valid) | |
993 | return last_displayed_symtab; | |
994 | return 0; | |
995 | } | |
996 | ||
997 | /* Get the line of the last sal we displayed, if it's valid. */ | |
998 | ||
999 | int | |
1000 | get_last_displayed_line (void) | |
1001 | { | |
1002 | if (last_displayed_sal_valid) | |
1003 | return last_displayed_line; | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | /* Get the last sal we displayed, if it's valid. */ | |
1008 | ||
1009 | void | |
1010 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1011 | { | |
1012 | if (last_displayed_sal_valid) | |
1013 | { | |
1014 | sal->pspace = last_displayed_pspace; | |
1015 | sal->pc = last_displayed_addr; | |
1016 | sal->symtab = last_displayed_symtab; | |
1017 | sal->line = last_displayed_line; | |
1018 | } | |
1019 | else | |
1020 | { | |
1021 | sal->pspace = 0; | |
1022 | sal->pc = 0; | |
1023 | sal->symtab = 0; | |
1024 | sal->line = 0; | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | ||
e9e07ba6 | 1029 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1030 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1031 | |
f8f6f20b | 1032 | void |
55b87a52 | 1033 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1034 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1035 | { |
1036 | struct symbol *func; | |
8b93c638 | 1037 | |
f8f6f20b TJB |
1038 | *funname = NULL; |
1039 | *funlang = language_unknown; | |
e9e07ba6 JK |
1040 | if (funcp) |
1041 | *funcp = NULL; | |
c5394b80 | 1042 | |
edb3359d | 1043 | func = get_frame_function (frame); |
c906108c SS |
1044 | if (func) |
1045 | { | |
1046 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1047 | function (when we are in the first function in a file which |
1048 | is compiled without debugging symbols, the previous function | |
1049 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1050 | that is supposed to tell us where the file with debugging |
1051 | symbols ends has been truncated by ar because it is longer | |
1052 | than 15 characters). This also occurs if the user uses asm() | |
1053 | to create a function but not stabs for it (in a file compiled | |
1054 | with -g). | |
c5aa993b JM |
1055 | |
1056 | So look in the minimal symbol tables as well, and if it comes | |
1057 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1058 | I don't think this can ever cause any problems; there |
1059 | shouldn't be any minimal symbols in the middle of a function; | |
1060 | if this is ever changed many parts of GDB will need to be | |
1061 | changed (and we'll create a find_pc_minimal_function or some | |
1062 | such). */ | |
1063 | ||
7cbd4a93 | 1064 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1065 | |
1066 | /* Don't attempt to do this for inlined functions, which do not | |
1067 | have a corresponding minimal symbol. */ | |
1068 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1069 | msymbol | |
1070 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1071 | else |
1072 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1073 | |
7cbd4a93 TT |
1074 | if (msymbol.minsym != NULL |
1075 | && (SYMBOL_VALUE_ADDRESS (msymbol.minsym) | |
c906108c SS |
1076 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1077 | { | |
c906108c SS |
1078 | /* We also don't know anything about the function besides |
1079 | its address and name. */ | |
1080 | func = 0; | |
55b87a52 | 1081 | *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym)); |
7cbd4a93 | 1082 | *funlang = SYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1083 | } |
1084 | else | |
1085 | { | |
55b87a52 | 1086 | *funname = xstrdup (SYMBOL_PRINT_NAME (func)); |
f8f6f20b | 1087 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1088 | if (funcp) |
1089 | *funcp = func; | |
f8f6f20b | 1090 | if (*funlang == language_cplus) |
c5aa993b | 1091 | { |
033a42c2 MK |
1092 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1093 | to display the demangled name that we already have | |
1094 | stored in the symbol table, but we stored a version | |
1095 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1096 | display parameters. So remove the parameters. */ |
f8f6f20b | 1097 | char *func_only = cp_remove_params (*funname); |
433759f7 | 1098 | |
3567439c DJ |
1099 | if (func_only) |
1100 | { | |
55b87a52 | 1101 | xfree (*funname); |
f8f6f20b | 1102 | *funname = func_only; |
3567439c | 1103 | } |
c5aa993b | 1104 | } |
c906108c SS |
1105 | } |
1106 | } | |
1107 | else | |
1108 | { | |
7cbd4a93 | 1109 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1110 | CORE_ADDR pc; |
033a42c2 | 1111 | |
e3eebbd7 PA |
1112 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1113 | return; | |
1114 | ||
1115 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1116 | if (msymbol.minsym != NULL) |
c906108c | 1117 | { |
55b87a52 | 1118 | *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym)); |
7cbd4a93 | 1119 | *funlang = SYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1120 | } |
1121 | } | |
f8f6f20b TJB |
1122 | } |
1123 | ||
1124 | static void | |
1125 | print_frame (struct frame_info *frame, int print_level, | |
1126 | enum print_what print_what, int print_args, | |
1127 | struct symtab_and_line sal) | |
1128 | { | |
5af949e3 | 1129 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1130 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1131 | char *funname = NULL; |
f8f6f20b | 1132 | enum language funlang = language_unknown; |
f99d8bf4 | 1133 | struct ui_file *stb; |
f8f6f20b TJB |
1134 | struct cleanup *old_chain, *list_chain; |
1135 | struct value_print_options opts; | |
e9e07ba6 | 1136 | struct symbol *func; |
e3eebbd7 PA |
1137 | CORE_ADDR pc = 0; |
1138 | int pc_p; | |
1139 | ||
1140 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1141 | |
f99d8bf4 PA |
1142 | stb = mem_fileopen (); |
1143 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1144 | |
e9e07ba6 | 1145 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1146 | make_cleanup (xfree, funname); |
c906108c | 1147 | |
033a42c2 | 1148 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1149 | gdbarch, pc); |
c5394b80 | 1150 | |
666547aa | 1151 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1152 | |
0faf0076 | 1153 | if (print_level) |
8b93c638 | 1154 | { |
8b93c638 | 1155 | ui_out_text (uiout, "#"); |
0faf0076 | 1156 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1157 | frame_relative_level (frame)); |
8b93c638 | 1158 | } |
79a45b7d TT |
1159 | get_user_print_options (&opts); |
1160 | if (opts.addressprint) | |
e3eebbd7 PA |
1161 | if (!sal.symtab |
1162 | || frame_show_address (frame, sal) | |
0faf0076 | 1163 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1164 | { |
1165 | annotate_frame_address (); | |
e3eebbd7 PA |
1166 | if (pc_p) |
1167 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1168 | else | |
1169 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1170 | annotate_frame_address_end (); |
1171 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1172 | } |
1173 | annotate_frame_function_name (); | |
f99d8bf4 | 1174 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1175 | funlang, DMGL_ANSI); |
8b93c638 JM |
1176 | ui_out_field_stream (uiout, "func", stb); |
1177 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1178 | annotate_frame_args (); |
1179 | ||
8b93c638 | 1180 | ui_out_text (uiout, " ("); |
0faf0076 | 1181 | if (print_args) |
c906108c | 1182 | { |
311b5970 JK |
1183 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1184 | int numargs; | |
d493eb33 | 1185 | struct cleanup *args_list_chain; |
311b5970 | 1186 | volatile struct gdb_exception e; |
433759f7 | 1187 | |
311b5970 JK |
1188 | if (gdbarch_frame_num_args_p (gdbarch)) |
1189 | { | |
1190 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1191 | gdb_assert (numargs >= 0); | |
1192 | } | |
1193 | else | |
1194 | numargs = -1; | |
1195 | ||
68c81b54 | 1196 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
1197 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1198 | { | |
1199 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1200 | } | |
c378eb4e | 1201 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1202 | will have " that will not be properly escaped. */ |
666547aa | 1203 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1204 | do_cleanups (args_list_chain); |
c5394b80 JM |
1205 | QUIT; |
1206 | } | |
8b93c638 | 1207 | ui_out_text (uiout, ")"); |
4e04028d | 1208 | if (sal.symtab) |
c5394b80 | 1209 | { |
1b56eb55 JK |
1210 | const char *filename_display; |
1211 | ||
1212 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1213 | annotate_frame_source_begin (); |
8b93c638 JM |
1214 | ui_out_wrap_hint (uiout, " "); |
1215 | ui_out_text (uiout, " at "); | |
1216 | annotate_frame_source_file (); | |
1b56eb55 | 1217 | ui_out_field_string (uiout, "file", filename_display); |
76ff342d DJ |
1218 | if (ui_out_is_mi_like_p (uiout)) |
1219 | { | |
1220 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1221 | |
f35a17b5 | 1222 | ui_out_field_string (uiout, "fullname", fullname); |
76ff342d | 1223 | } |
8b93c638 JM |
1224 | annotate_frame_source_file_end (); |
1225 | ui_out_text (uiout, ":"); | |
1226 | annotate_frame_source_line (); | |
1227 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1228 | annotate_frame_source_end (); |
1229 | } | |
c906108c | 1230 | |
4e04028d | 1231 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1232 | { |
6c95b8df PA |
1233 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1234 | get_frame_pc (frame)); | |
4d1eb6b4 | 1235 | |
c5394b80 | 1236 | if (lib) |
c906108c | 1237 | { |
c5394b80 | 1238 | annotate_frame_where (); |
8b93c638 JM |
1239 | ui_out_wrap_hint (uiout, " "); |
1240 | ui_out_text (uiout, " from "); | |
1241 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1242 | } |
c906108c | 1243 | } |
e514a9d6 | 1244 | |
666547aa | 1245 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1246 | do_cleanups (list_chain); |
8b93c638 JM |
1247 | ui_out_text (uiout, "\n"); |
1248 | do_cleanups (old_chain); | |
c906108c SS |
1249 | } |
1250 | \f | |
c5aa993b | 1251 | |
033a42c2 MK |
1252 | /* Read a frame specification in whatever the appropriate format is |
1253 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
1254 | specification is in any way invalid (so this function never returns | |
1255 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
1256 | the default selected frame was used. */ | |
c906108c | 1257 | |
1c8831c5 AC |
1258 | static struct frame_info * |
1259 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
1260 | int *selected_frame_p) | |
c906108c | 1261 | { |
1c8831c5 AC |
1262 | int numargs; |
1263 | struct value *args[4]; | |
1264 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1265 | |
1c8831c5 AC |
1266 | if (frame_exp == NULL) |
1267 | numargs = 0; | |
1268 | else | |
c906108c | 1269 | { |
1c8831c5 AC |
1270 | numargs = 0; |
1271 | while (1) | |
c906108c | 1272 | { |
1c8831c5 AC |
1273 | char *addr_string; |
1274 | struct cleanup *cleanup; | |
1275 | const char *p; | |
1276 | ||
1277 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1278 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1279 | if (!*frame_exp) |
1280 | break; | |
c906108c | 1281 | |
1c8831c5 AC |
1282 | /* Parse the argument, extract it, save it. */ |
1283 | for (p = frame_exp; | |
1284 | *p && !isspace (*p); | |
1285 | p++); | |
1286 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1287 | frame_exp = p; |
1c8831c5 AC |
1288 | cleanup = make_cleanup (xfree, addr_string); |
1289 | ||
1290 | /* NOTE: Parse and evaluate expression, but do not use | |
1291 | functions such as parse_and_eval_long or | |
1292 | parse_and_eval_address to also extract the value. | |
1293 | Instead value_as_long and value_as_address are used. | |
1294 | This avoids problems with expressions that contain | |
1295 | side-effects. */ | |
1296 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1297 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1298 | args[numargs++] = parse_and_eval (addr_string); |
1299 | ||
1300 | do_cleanups (cleanup); | |
c906108c SS |
1301 | } |
1302 | } | |
1303 | ||
1c8831c5 AC |
1304 | /* If no args, default to the selected frame. */ |
1305 | if (numargs == 0) | |
c906108c | 1306 | { |
1c8831c5 AC |
1307 | if (selected_frame_p != NULL) |
1308 | (*selected_frame_p) = 1; | |
1309 | return get_selected_frame (message); | |
1310 | } | |
c906108c | 1311 | |
1c8831c5 AC |
1312 | /* None of the remaining use the selected frame. */ |
1313 | if (selected_frame_p != NULL) | |
98f276a0 | 1314 | (*selected_frame_p) = 0; |
c906108c | 1315 | |
1c8831c5 AC |
1316 | /* Assume the single arg[0] is an integer, and try using that to |
1317 | select a frame relative to current. */ | |
1318 | if (numargs == 1) | |
1319 | { | |
1320 | struct frame_info *fid; | |
1321 | int level = value_as_long (args[0]); | |
433759f7 | 1322 | |
1c8831c5 AC |
1323 | fid = find_relative_frame (get_current_frame (), &level); |
1324 | if (level == 0) | |
c378eb4e | 1325 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1326 | return fid; |
1327 | } | |
c906108c | 1328 | |
1c8831c5 AC |
1329 | /* Convert each value into a corresponding address. */ |
1330 | { | |
1331 | int i; | |
433759f7 | 1332 | |
1c8831c5 | 1333 | for (i = 0; i < numargs; i++) |
1e275f79 | 1334 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1335 | } |
c5aa993b | 1336 | |
1c8831c5 AC |
1337 | /* Assume that the single arg[0] is an address, use that to identify |
1338 | a frame with a matching ID. Should this also accept stack/pc or | |
1339 | stack/pc/special. */ | |
1340 | if (numargs == 1) | |
1341 | { | |
1342 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1343 | struct frame_info *fid; | |
1344 | ||
1c8831c5 AC |
1345 | /* If (s)he specifies the frame with an address, he deserves |
1346 | what (s)he gets. Still, give the highest one that matches. | |
1347 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1348 | know). */ | |
1349 | for (fid = get_current_frame (); | |
1350 | fid != NULL; | |
1351 | fid = get_prev_frame (fid)) | |
1352 | { | |
1353 | if (frame_id_eq (id, get_frame_id (fid))) | |
1354 | { | |
c7ce8faa DJ |
1355 | struct frame_info *prev_frame; |
1356 | ||
1357 | while (1) | |
1358 | { | |
1359 | prev_frame = get_prev_frame (fid); | |
1360 | if (!prev_frame | |
1361 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1362 | break; | |
1363 | fid = prev_frame; | |
1364 | } | |
1c8831c5 AC |
1365 | return fid; |
1366 | } | |
1367 | } | |
c906108c SS |
1368 | } |
1369 | ||
1c8831c5 AC |
1370 | /* We couldn't identify the frame as an existing frame, but |
1371 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1372 | if (numargs == 1) |
1373 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1374 | else if (numargs == 2) |
1375 | return create_new_frame (addrs[0], addrs[1]); | |
1376 | else | |
8a3fe4f8 | 1377 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1378 | } |
1379 | ||
9c833c82 | 1380 | static struct frame_info * |
1c8831c5 AC |
1381 | parse_frame_specification (char *frame_exp) |
1382 | { | |
1383 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
1384 | } |
1385 | ||
033a42c2 MK |
1386 | /* Print verbosely the selected frame or the frame at address |
1387 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1388 | |
1389 | static void | |
fba45db2 | 1390 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1391 | { |
1392 | struct frame_info *fi; | |
1393 | struct symtab_and_line sal; | |
1394 | struct symbol *func; | |
1395 | struct symtab *s; | |
1396 | struct frame_info *calling_frame_info; | |
167e4384 | 1397 | int numregs; |
0d5cff50 | 1398 | const char *funname = 0; |
c906108c | 1399 | enum language funlang = language_unknown; |
82de1e5b | 1400 | const char *pc_regname; |
1c8831c5 | 1401 | int selected_frame_p; |
7500260a | 1402 | struct gdbarch *gdbarch; |
3567439c | 1403 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1404 | CORE_ADDR frame_pc; |
1405 | int frame_pc_p; | |
1406 | CORE_ADDR caller_pc; | |
c906108c | 1407 | |
1c8831c5 | 1408 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1409 | gdbarch = get_frame_arch (fi); |
c906108c | 1410 | |
82de1e5b AC |
1411 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1412 | is not a good name. */ | |
12368003 | 1413 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1414 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1415 | easily not match that of the internal value returned by |
1416 | get_frame_pc(). */ | |
12368003 | 1417 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1418 | else |
3e8c568d | 1419 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1420 | architectures will often have a hardware register called "pc", |
1421 | and that register's value, again, can easily not match | |
1422 | get_frame_pc(). */ | |
1423 | pc_regname = "pc"; | |
1424 | ||
008f8f2e | 1425 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1426 | find_frame_sal (fi, &sal); |
c906108c | 1427 | func = get_frame_function (fi); |
008f8f2e | 1428 | s = sal.symtab; |
c906108c SS |
1429 | if (func) |
1430 | { | |
3567439c | 1431 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1432 | funlang = SYMBOL_LANGUAGE (func); |
1433 | if (funlang == language_cplus) | |
1434 | { | |
3567439c DJ |
1435 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1436 | to display the demangled name that we already have | |
1437 | stored in the symbol table, but we stored a version | |
1438 | with DMGL_PARAMS turned on, and here we don't want to | |
1439 | display parameters. So remove the parameters. */ | |
1440 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1441 | |
3567439c DJ |
1442 | if (func_only) |
1443 | { | |
1444 | funname = func_only; | |
1445 | make_cleanup (xfree, func_only); | |
1446 | } | |
c5aa993b | 1447 | } |
c906108c | 1448 | } |
008f8f2e | 1449 | else if (frame_pc_p) |
c906108c | 1450 | { |
7cbd4a93 | 1451 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1452 | |
008f8f2e | 1453 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1454 | if (msymbol.minsym != NULL) |
c906108c | 1455 | { |
7cbd4a93 TT |
1456 | funname = SYMBOL_PRINT_NAME (msymbol.minsym); |
1457 | funlang = SYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1458 | } |
1459 | } | |
1460 | calling_frame_info = get_prev_frame (fi); | |
1461 | ||
1c8831c5 | 1462 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1463 | { |
a3f17187 | 1464 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1465 | frame_relative_level (fi)); |
c906108c SS |
1466 | } |
1467 | else | |
1468 | { | |
a3f17187 | 1469 | printf_filtered (_("Stack frame at ")); |
c906108c | 1470 | } |
5af949e3 | 1471 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1472 | printf_filtered (":\n"); |
82de1e5b | 1473 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1474 | if (frame_pc_p) |
1475 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1476 | else | |
1477 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1478 | |
1479 | wrap_here (" "); | |
1480 | if (funname) | |
1481 | { | |
1482 | printf_filtered (" in "); | |
1483 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1484 | DMGL_ANSI | DMGL_PARAMS); | |
1485 | } | |
1486 | wrap_here (" "); | |
1487 | if (sal.symtab) | |
05cba821 JK |
1488 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1489 | sal.line); | |
c906108c SS |
1490 | puts_filtered ("; "); |
1491 | wrap_here (" "); | |
82de1e5b | 1492 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1493 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1494 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1495 | else | |
1496 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1497 | printf_filtered ("\n"); |
1498 | ||
55feb689 DJ |
1499 | if (calling_frame_info == NULL) |
1500 | { | |
1501 | enum unwind_stop_reason reason; | |
1502 | ||
1503 | reason = get_frame_unwind_stop_reason (fi); | |
1504 | if (reason != UNWIND_NO_REASON) | |
1505 | printf_filtered (_(" Outermost frame: %s\n"), | |
1506 | frame_stop_reason_string (reason)); | |
1507 | } | |
111c6489 JK |
1508 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1509 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1510 | else if (get_frame_type (fi) == INLINE_FRAME) |
1511 | printf_filtered (" inlined into frame %d", | |
1512 | frame_relative_level (get_prev_frame (fi))); | |
1513 | else | |
c906108c SS |
1514 | { |
1515 | printf_filtered (" called by frame at "); | |
5af949e3 | 1516 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1517 | gdb_stdout); |
c906108c | 1518 | } |
75e3c1f9 | 1519 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1520 | puts_filtered (","); |
1521 | wrap_here (" "); | |
75e3c1f9 | 1522 | if (get_next_frame (fi)) |
c906108c SS |
1523 | { |
1524 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1525 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1526 | gdb_stdout); |
c906108c | 1527 | } |
75e3c1f9 | 1528 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1529 | puts_filtered ("\n"); |
55feb689 | 1530 | |
c906108c | 1531 | if (s) |
1058bca7 AC |
1532 | printf_filtered (" source language %s.\n", |
1533 | language_str (s->language)); | |
c906108c | 1534 | |
c906108c SS |
1535 | { |
1536 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1537 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1538 | /* Number of args for this frame, or -1 if unknown. */ |
1539 | int numargs; | |
1540 | ||
1541 | if (arg_list == 0) | |
1542 | printf_filtered (" Arglist at unknown address.\n"); | |
1543 | else | |
1544 | { | |
1545 | printf_filtered (" Arglist at "); | |
5af949e3 | 1546 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1547 | printf_filtered (","); |
1548 | ||
7500260a | 1549 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1550 | { |
1551 | numargs = -1; | |
1552 | puts_filtered (" args: "); | |
1553 | } | |
c906108c | 1554 | else |
983a287a | 1555 | { |
7500260a | 1556 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1557 | gdb_assert (numargs >= 0); |
1558 | if (numargs == 0) | |
1559 | puts_filtered (" no args."); | |
1560 | else if (numargs == 1) | |
1561 | puts_filtered (" 1 arg: "); | |
1562 | else | |
1563 | printf_filtered (" %d args: ", numargs); | |
1564 | } | |
c906108c SS |
1565 | print_frame_args (func, fi, numargs, gdb_stdout); |
1566 | puts_filtered ("\n"); | |
1567 | } | |
1568 | } | |
1569 | { | |
1570 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1571 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1572 | |
1573 | if (arg_list == 0) | |
1574 | printf_filtered (" Locals at unknown address,"); | |
1575 | else | |
1576 | { | |
1577 | printf_filtered (" Locals at "); | |
5af949e3 | 1578 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1579 | printf_filtered (","); |
1580 | } | |
1581 | } | |
1582 | ||
4f460812 AC |
1583 | /* Print as much information as possible on the location of all the |
1584 | registers. */ | |
1585 | { | |
1586 | enum lval_type lval; | |
1587 | int optimized; | |
0fdb4f18 | 1588 | int unavailable; |
4f460812 AC |
1589 | CORE_ADDR addr; |
1590 | int realnum; | |
1591 | int count; | |
1592 | int i; | |
1593 | int need_nl = 1; | |
1594 | ||
1595 | /* The sp is special; what's displayed isn't the save address, but | |
1596 | the value of the previous frame's sp. This is a legacy thing, | |
1597 | at one stage the frame cached the previous frame's SP instead | |
1598 | of its address, hence it was easiest to just display the cached | |
1599 | value. */ | |
7500260a | 1600 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1601 | { |
1602 | /* Find out the location of the saved stack pointer with out | |
1603 | actually evaluating it. */ | |
7500260a | 1604 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1605 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1606 | &realnum, NULL); |
0fdb4f18 | 1607 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1608 | { |
e17a4113 UW |
1609 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1610 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1611 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1612 | CORE_ADDR sp; |
433759f7 | 1613 | |
7500260a | 1614 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1615 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1616 | &realnum, value); |
af1342ab AC |
1617 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1618 | stack pointer was packed as an unsigned integer. That | |
1619 | may or may not be valid. */ | |
e17a4113 | 1620 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1621 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1622 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1623 | printf_filtered ("\n"); |
1624 | need_nl = 0; | |
c906108c | 1625 | } |
0fdb4f18 | 1626 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1627 | { |
1628 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1629 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1630 | printf_filtered ("\n"); |
1631 | need_nl = 0; | |
1632 | } | |
0fdb4f18 | 1633 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1634 | { |
1635 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1636 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1637 | need_nl = 0; |
1638 | } | |
1639 | /* else keep quiet. */ | |
1640 | } | |
1641 | ||
1642 | count = 0; | |
7500260a UW |
1643 | numregs = gdbarch_num_regs (gdbarch) |
1644 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1645 | for (i = 0; i < numregs; i++) |
7500260a UW |
1646 | if (i != gdbarch_sp_regnum (gdbarch) |
1647 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1648 | { |
1649 | /* Find out the location of the saved register without | |
1650 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1651 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1652 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1653 | /* For moment, only display registers that were saved on the |
1654 | stack. */ | |
0fdb4f18 | 1655 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1656 | { |
1657 | if (count == 0) | |
1658 | puts_filtered (" Saved registers:\n "); | |
1659 | else | |
1660 | puts_filtered (","); | |
1661 | wrap_here (" "); | |
c9f4d572 | 1662 | printf_filtered (" %s at ", |
7500260a | 1663 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1664 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1665 | count++; |
1666 | } | |
1667 | } | |
1668 | if (count || need_nl) | |
c906108c | 1669 | puts_filtered ("\n"); |
4f460812 | 1670 | } |
3567439c DJ |
1671 | |
1672 | do_cleanups (back_to); | |
c906108c SS |
1673 | } |
1674 | ||
033a42c2 MK |
1675 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1676 | frames. */ | |
c906108c SS |
1677 | |
1678 | static void | |
1e611234 PM |
1679 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1680 | int from_tty) | |
c906108c SS |
1681 | { |
1682 | struct frame_info *fi; | |
52f0bd74 AC |
1683 | int count; |
1684 | int i; | |
1685 | struct frame_info *trailing; | |
1e611234 PM |
1686 | int trailing_level, py_start = 0, py_end = 0; |
1687 | enum py_bt_status result = PY_BT_ERROR; | |
c906108c SS |
1688 | |
1689 | if (!target_has_stack) | |
8a3fe4f8 | 1690 | error (_("No stack.")); |
c906108c | 1691 | |
033a42c2 MK |
1692 | /* The following code must do two things. First, it must set the |
1693 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1694 | printing. Second, it must set the variable count to the number |
1695 | of frames which we should print, or -1 if all of them. */ | |
1696 | trailing = get_current_frame (); | |
d082b2bb | 1697 | |
c906108c SS |
1698 | trailing_level = 0; |
1699 | if (count_exp) | |
1700 | { | |
bb518678 | 1701 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1702 | if (count < 0) |
1703 | { | |
1704 | struct frame_info *current; | |
1705 | ||
1e611234 | 1706 | py_start = count; |
c906108c SS |
1707 | count = -count; |
1708 | ||
1709 | current = trailing; | |
1710 | while (current && count--) | |
1711 | { | |
1712 | QUIT; | |
1713 | current = get_prev_frame (current); | |
1714 | } | |
c5aa993b | 1715 | |
033a42c2 MK |
1716 | /* Will stop when CURRENT reaches the top of the stack. |
1717 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1718 | while (current) |
1719 | { | |
1720 | QUIT; | |
1721 | trailing = get_prev_frame (trailing); | |
1722 | current = get_prev_frame (current); | |
1723 | trailing_level++; | |
1724 | } | |
c5aa993b | 1725 | |
c906108c SS |
1726 | count = -1; |
1727 | } | |
1e611234 PM |
1728 | else |
1729 | { | |
1730 | py_start = 0; | |
1731 | py_end = count; | |
1732 | } | |
c906108c SS |
1733 | } |
1734 | else | |
1e611234 PM |
1735 | { |
1736 | py_end = -1; | |
1737 | count = -1; | |
1738 | } | |
c906108c SS |
1739 | |
1740 | if (info_verbose) | |
1741 | { | |
033a42c2 MK |
1742 | /* Read in symbols for all of the frames. Need to do this in a |
1743 | separate pass so that "Reading in symbols for xxx" messages | |
1744 | don't screw up the appearance of the backtrace. Also if | |
1745 | people have strong opinions against reading symbols for | |
c5aa993b | 1746 | backtrace this may have to be an option. */ |
c906108c | 1747 | i = count; |
033a42c2 | 1748 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1749 | { |
ccefe4c4 | 1750 | CORE_ADDR pc; |
433759f7 | 1751 | |
c906108c | 1752 | QUIT; |
ccefe4c4 TT |
1753 | pc = get_frame_address_in_block (fi); |
1754 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1755 | } |
1756 | } | |
1757 | ||
1e611234 | 1758 | if (! no_filters) |
c906108c | 1759 | { |
1e611234 PM |
1760 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
1761 | enum py_frame_args arg_type; | |
c906108c | 1762 | |
c906108c | 1763 | if (show_locals) |
1e611234 PM |
1764 | flags |= PRINT_LOCALS; |
1765 | ||
1766 | if (!strcmp (print_frame_arguments, "scalars")) | |
1767 | arg_type = CLI_SCALAR_VALUES; | |
1768 | else if (!strcmp (print_frame_arguments, "all")) | |
1769 | arg_type = CLI_ALL_VALUES; | |
1770 | else | |
1771 | arg_type = NO_VALUES; | |
1772 | ||
1773 | result = apply_frame_filter (get_current_frame (), flags, arg_type, | |
1774 | current_uiout, py_start, py_end); | |
1775 | ||
1776 | } | |
1777 | /* Run the inbuilt backtrace if there are no filters registered, or | |
1778 | "no-filters" has been specified from the command. */ | |
1779 | if (no_filters || result == PY_BT_NO_FILTERS) | |
1780 | { | |
1781 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1782 | { | |
1783 | QUIT; | |
1784 | ||
1785 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1786 | means further attempts to backtrace would fail (on the other | |
1787 | hand, perhaps the code does or could be fixed to make sure | |
1788 | the frame->prev field gets set to NULL in that case). */ | |
1789 | ||
1790 | print_frame_info (fi, 1, LOCATION, 1); | |
1791 | if (show_locals) | |
d0548fa2 PM |
1792 | { |
1793 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1794 | |
d0548fa2 | 1795 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1796 | |
d0548fa2 PM |
1797 | /* print_frame_local_vars invalidates FI. */ |
1798 | fi = frame_find_by_id (frame_id); | |
1799 | if (fi == NULL) | |
1800 | { | |
1801 | trailing = NULL; | |
1802 | warning (_("Unable to restore previously selected frame.")); | |
1803 | break; | |
1804 | } | |
8f043999 | 1805 | } |
55feb689 | 1806 | |
1e611234 PM |
1807 | /* Save the last frame to check for error conditions. */ |
1808 | trailing = fi; | |
1809 | } | |
c906108c | 1810 | |
1e611234 PM |
1811 | /* If we've stopped before the end, mention that. */ |
1812 | if (fi && from_tty) | |
1813 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1814 | |
1e611234 PM |
1815 | /* If we've run out of frames, and the reason appears to be an error |
1816 | condition, print it. */ | |
1817 | if (fi == NULL && trailing != NULL) | |
1818 | { | |
1819 | enum unwind_stop_reason reason; | |
55feb689 | 1820 | |
1e611234 PM |
1821 | reason = get_frame_unwind_stop_reason (trailing); |
1822 | if (reason >= UNWIND_FIRST_ERROR) | |
1823 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1824 | frame_stop_reason_string (reason)); | |
1825 | } | |
55feb689 | 1826 | } |
c906108c SS |
1827 | } |
1828 | ||
1829 | static void | |
fba45db2 | 1830 | backtrace_command (char *arg, int from_tty) |
c906108c | 1831 | { |
5fe41fbf | 1832 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1833 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1834 | int user_arg = 0; | |
c906108c | 1835 | |
033a42c2 | 1836 | if (arg) |
c906108c | 1837 | { |
033a42c2 | 1838 | char **argv; |
c906108c SS |
1839 | int i; |
1840 | ||
d1a41061 | 1841 | argv = gdb_buildargv (arg); |
5fe41fbf | 1842 | make_cleanup_freeargv (argv); |
c906108c | 1843 | argc = 0; |
033a42c2 | 1844 | for (i = 0; argv[i]; i++) |
c5aa993b | 1845 | { |
745b8ca0 | 1846 | unsigned int j; |
c5aa993b | 1847 | |
033a42c2 | 1848 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1849 | argv[i][j] = tolower (argv[i][j]); |
1850 | ||
1e611234 PM |
1851 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1852 | no_filters = argc; | |
c5aa993b JM |
1853 | else |
1854 | { | |
1e611234 PM |
1855 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1856 | fulltrace_arg = argc; | |
1857 | else | |
1858 | { | |
1859 | user_arg++; | |
1860 | arglen += strlen (argv[i]); | |
1861 | } | |
c5aa993b | 1862 | } |
1e611234 | 1863 | argc++; |
c5aa993b | 1864 | } |
1e611234 PM |
1865 | arglen += user_arg; |
1866 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1867 | { |
033a42c2 | 1868 | if (arglen > 0) |
c5aa993b | 1869 | { |
033a42c2 | 1870 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1871 | make_cleanup (xfree, arg); |
1872 | arg[0] = 0; | |
1e611234 | 1873 | for (i = 0; i < argc; i++) |
c5aa993b | 1874 | { |
1e611234 | 1875 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1876 | { |
033a42c2 MK |
1877 | strcat (arg, argv[i]); |
1878 | strcat (arg, " "); | |
c5aa993b JM |
1879 | } |
1880 | } | |
1881 | } | |
1882 | else | |
033a42c2 | 1883 | arg = NULL; |
c5aa993b | 1884 | } |
c906108c SS |
1885 | } |
1886 | ||
1e611234 PM |
1887 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1888 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1889 | |
5fe41fbf | 1890 | do_cleanups (old_chain); |
c906108c SS |
1891 | } |
1892 | ||
1893 | static void | |
fba45db2 | 1894 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1895 | { |
1e611234 | 1896 | backtrace_command_1 (arg, 1 /* show_locals */, 0, from_tty); |
c906108c | 1897 | } |
c906108c | 1898 | \f |
c5aa993b | 1899 | |
2c58c0a9 PA |
1900 | /* Iterate over the local variables of a block B, calling CB with |
1901 | CB_DATA. */ | |
c906108c | 1902 | |
2c58c0a9 PA |
1903 | static void |
1904 | iterate_over_block_locals (struct block *b, | |
1905 | iterate_over_block_arg_local_vars_cb cb, | |
1906 | void *cb_data) | |
c906108c | 1907 | { |
8157b174 | 1908 | struct block_iterator iter; |
de4f826b | 1909 | struct symbol *sym; |
c906108c | 1910 | |
de4f826b | 1911 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1912 | { |
c906108c SS |
1913 | switch (SYMBOL_CLASS (sym)) |
1914 | { | |
1915 | case LOC_LOCAL: | |
1916 | case LOC_REGISTER: | |
1917 | case LOC_STATIC: | |
4c2df51b | 1918 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1919 | if (SYMBOL_IS_ARGUMENT (sym)) |
1920 | break; | |
4357ac6c TT |
1921 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1922 | break; | |
2c58c0a9 | 1923 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1924 | break; |
1925 | ||
1926 | default: | |
1927 | /* Ignore symbols which are not locals. */ | |
1928 | break; | |
1929 | } | |
1930 | } | |
c906108c SS |
1931 | } |
1932 | ||
65c06092 | 1933 | |
c906108c SS |
1934 | /* Same, but print labels. */ |
1935 | ||
65c06092 JB |
1936 | #if 0 |
1937 | /* Commented out, as the code using this function has also been | |
1938 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1939 | was commented out in the first place. The discussion introducing | |
1940 | this change (2007-12-04: Support lexical blocks and function bodies | |
1941 | that occupy non-contiguous address ranges) did not explain why | |
1942 | this change was made. */ | |
c906108c | 1943 | static int |
5af949e3 UW |
1944 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1945 | int *have_default, struct ui_file *stream) | |
c906108c | 1946 | { |
8157b174 | 1947 | struct block_iterator iter; |
52f0bd74 AC |
1948 | struct symbol *sym; |
1949 | int values_printed = 0; | |
c906108c | 1950 | |
de4f826b | 1951 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1952 | { |
3567439c | 1953 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1954 | { |
1955 | if (*have_default) | |
1956 | continue; | |
1957 | *have_default = 1; | |
1958 | } | |
1959 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1960 | { | |
1961 | struct symtab_and_line sal; | |
79a45b7d | 1962 | struct value_print_options opts; |
433759f7 | 1963 | |
c906108c SS |
1964 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1965 | values_printed = 1; | |
de5ad195 | 1966 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1967 | get_user_print_options (&opts); |
1968 | if (opts.addressprint) | |
c906108c SS |
1969 | { |
1970 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1971 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1972 | stream); | |
c906108c SS |
1973 | } |
1974 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1975 | sal.symtab->filename, sal.line); | |
1976 | } | |
1977 | } | |
033a42c2 | 1978 | |
c906108c SS |
1979 | return values_printed; |
1980 | } | |
65c06092 | 1981 | #endif |
c906108c | 1982 | |
2c58c0a9 PA |
1983 | /* Iterate over all the local variables in block B, including all its |
1984 | superblocks, stopping when the top-level block is reached. */ | |
1985 | ||
1986 | void | |
1987 | iterate_over_block_local_vars (struct block *block, | |
1988 | iterate_over_block_arg_local_vars_cb cb, | |
1989 | void *cb_data) | |
1990 | { | |
1991 | while (block) | |
1992 | { | |
1993 | iterate_over_block_locals (block, cb, cb_data); | |
1994 | /* After handling the function's top-level block, stop. Don't | |
1995 | continue to its superblock, the block of per-file | |
1996 | symbols. */ | |
1997 | if (BLOCK_FUNCTION (block)) | |
1998 | break; | |
1999 | block = BLOCK_SUPERBLOCK (block); | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | /* Data to be passed around in the calls to the locals and args | |
2004 | iterators. */ | |
c906108c | 2005 | |
2c58c0a9 PA |
2006 | struct print_variable_and_value_data |
2007 | { | |
8f043999 | 2008 | struct frame_id frame_id; |
2c58c0a9 PA |
2009 | int num_tabs; |
2010 | struct ui_file *stream; | |
2011 | int values_printed; | |
2012 | }; | |
2013 | ||
c378eb4e | 2014 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2015 | |
2016 | static void | |
2017 | do_print_variable_and_value (const char *print_name, | |
2018 | struct symbol *sym, | |
2019 | void *cb_data) | |
2020 | { | |
2021 | struct print_variable_and_value_data *p = cb_data; | |
8f043999 JK |
2022 | struct frame_info *frame; |
2023 | ||
2024 | frame = frame_find_by_id (p->frame_id); | |
2025 | if (frame == NULL) | |
2026 | { | |
2027 | warning (_("Unable to restore previously selected frame.")); | |
2028 | return; | |
2029 | } | |
2030 | ||
2031 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2032 | ||
2033 | /* print_variable_and_value invalidates FRAME. */ | |
2034 | frame = NULL; | |
2c58c0a9 | 2035 | |
2c58c0a9 PA |
2036 | p->values_printed = 1; |
2037 | } | |
c906108c | 2038 | |
8f043999 JK |
2039 | /* Print all variables from the innermost up to the function block of FRAME. |
2040 | Print them with values to STREAM indented by NUM_TABS. | |
2041 | ||
2042 | This function will invalidate FRAME. */ | |
2043 | ||
c906108c | 2044 | static void |
033a42c2 | 2045 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2046 | struct ui_file *stream) |
c906108c | 2047 | { |
2c58c0a9 PA |
2048 | struct print_variable_and_value_data cb_data; |
2049 | struct block *block; | |
1d4f5741 PA |
2050 | CORE_ADDR pc; |
2051 | ||
2052 | if (!get_frame_pc_if_available (frame, &pc)) | |
2053 | { | |
2054 | fprintf_filtered (stream, | |
2055 | _("PC unavailable, cannot determine locals.\n")); | |
2056 | return; | |
2057 | } | |
c906108c | 2058 | |
2c58c0a9 | 2059 | block = get_frame_block (frame, 0); |
c906108c SS |
2060 | if (block == 0) |
2061 | { | |
2062 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2063 | return; | |
2064 | } | |
c5aa993b | 2065 | |
8f043999 | 2066 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2067 | cb_data.num_tabs = 4 * num_tabs; |
2068 | cb_data.stream = stream; | |
2069 | cb_data.values_printed = 0; | |
2070 | ||
2071 | iterate_over_block_local_vars (block, | |
2072 | do_print_variable_and_value, | |
2073 | &cb_data); | |
c906108c | 2074 | |
8f043999 JK |
2075 | /* do_print_variable_and_value invalidates FRAME. */ |
2076 | frame = NULL; | |
2077 | ||
2c58c0a9 | 2078 | if (!cb_data.values_printed) |
033a42c2 | 2079 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2080 | } |
2081 | ||
c906108c | 2082 | void |
fba45db2 | 2083 | locals_info (char *args, int from_tty) |
c906108c | 2084 | { |
033a42c2 | 2085 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2086 | 0, gdb_stdout); |
c906108c SS |
2087 | } |
2088 | ||
2c58c0a9 PA |
2089 | /* Iterate over all the argument variables in block B. |
2090 | ||
2091 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2092 | ||
2093 | void | |
2094 | iterate_over_block_arg_vars (struct block *b, | |
2095 | iterate_over_block_arg_local_vars_cb cb, | |
2096 | void *cb_data) | |
c906108c | 2097 | { |
8157b174 | 2098 | struct block_iterator iter; |
52f0bd74 | 2099 | struct symbol *sym, *sym2; |
c906108c | 2100 | |
de4f826b | 2101 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2102 | { |
2a2d4dc3 AS |
2103 | /* Don't worry about things which aren't arguments. */ |
2104 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2105 | { |
c906108c SS |
2106 | /* We have to look up the symbol because arguments can have |
2107 | two entries (one a parameter, one a local) and the one we | |
2108 | want is the local, which lookup_symbol will find for us. | |
2109 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2110 | small structure and gcc2 when the argument type is float | |
2111 | and it is passed as a double and converted to float by | |
2112 | the prologue (in the latter case the type of the LOC_ARG | |
2113 | symbol is double and the type of the LOC_LOCAL symbol is | |
2114 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2115 | are not combined in symbol-reading. */ | |
2116 | ||
3567439c | 2117 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 2118 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 2119 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2120 | } |
2121 | } | |
2c58c0a9 PA |
2122 | } |
2123 | ||
8f043999 JK |
2124 | /* Print all argument variables of the function of FRAME. |
2125 | Print them with values to STREAM. | |
2126 | ||
2127 | This function will invalidate FRAME. */ | |
2128 | ||
2c58c0a9 PA |
2129 | static void |
2130 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2131 | { | |
2132 | struct print_variable_and_value_data cb_data; | |
2133 | struct symbol *func; | |
1d4f5741 PA |
2134 | CORE_ADDR pc; |
2135 | ||
2136 | if (!get_frame_pc_if_available (frame, &pc)) | |
2137 | { | |
2138 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2139 | return; | |
2140 | } | |
2c58c0a9 PA |
2141 | |
2142 | func = get_frame_function (frame); | |
2143 | if (func == NULL) | |
2144 | { | |
2145 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2146 | return; | |
2147 | } | |
2148 | ||
8f043999 | 2149 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2150 | cb_data.num_tabs = 0; |
2151 | cb_data.stream = gdb_stdout; | |
2152 | cb_data.values_printed = 0; | |
2153 | ||
2154 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2155 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2156 | |
8f043999 JK |
2157 | /* do_print_variable_and_value invalidates FRAME. */ |
2158 | frame = NULL; | |
2159 | ||
2c58c0a9 | 2160 | if (!cb_data.values_printed) |
033a42c2 | 2161 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2162 | } |
2163 | ||
2164 | void | |
fba45db2 | 2165 | args_info (char *ignore, int from_tty) |
c906108c | 2166 | { |
033a42c2 | 2167 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2168 | gdb_stdout); |
c906108c SS |
2169 | } |
2170 | ||
2171 | ||
2172 | static void | |
fba45db2 | 2173 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 2174 | { |
c5aa993b JM |
2175 | args_info (ignore, from_tty); |
2176 | locals_info (ignore, from_tty); | |
c906108c | 2177 | } |
c906108c | 2178 | \f |
c5aa993b | 2179 | |
033a42c2 MK |
2180 | /* Select frame FRAME. Also print the stack frame and show the source |
2181 | if this is the tui version. */ | |
bedfa57b | 2182 | static void |
033a42c2 | 2183 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2184 | { |
033a42c2 MK |
2185 | select_frame (frame); |
2186 | if (frame) | |
2187 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 2188 | } |
c906108c | 2189 | \f |
c906108c | 2190 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2191 | Can return zero under various legitimate circumstances. |
2192 | ||
2193 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2194 | code address within the block returned. We use this to decide | |
2195 | which macros are in scope. */ | |
c906108c SS |
2196 | |
2197 | struct block * | |
ae767bfb | 2198 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2199 | { |
d729566a | 2200 | if (!has_stack_frames ()) |
8ea051c5 PA |
2201 | return 0; |
2202 | ||
206415a3 | 2203 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2204 | } |
2205 | ||
2206 | /* Find a frame a certain number of levels away from FRAME. | |
2207 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2208 | Positive means go to earlier frames (up); negative, the reverse. | |
2209 | The int that contains the number of levels is counted toward | |
2210 | zero as the frames for those levels are found. | |
2211 | If the top or bottom frame is reached, that frame is returned, | |
2212 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2213 | how much farther the original request asked to go. */ | |
2214 | ||
2215 | struct frame_info * | |
033a42c2 | 2216 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2217 | { |
033a42c2 MK |
2218 | /* Going up is simple: just call get_prev_frame enough times or |
2219 | until the initial frame is reached. */ | |
c906108c SS |
2220 | while (*level_offset_ptr > 0) |
2221 | { | |
033a42c2 | 2222 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2223 | |
033a42c2 | 2224 | if (!prev) |
c906108c SS |
2225 | break; |
2226 | (*level_offset_ptr)--; | |
2227 | frame = prev; | |
2228 | } | |
033a42c2 | 2229 | |
c906108c | 2230 | /* Going down is just as simple. */ |
033a42c2 | 2231 | while (*level_offset_ptr < 0) |
c906108c | 2232 | { |
033a42c2 | 2233 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2234 | |
033a42c2 MK |
2235 | if (!next) |
2236 | break; | |
2237 | (*level_offset_ptr)++; | |
2238 | frame = next; | |
c906108c | 2239 | } |
033a42c2 | 2240 | |
c906108c SS |
2241 | return frame; |
2242 | } | |
2243 | ||
033a42c2 MK |
2244 | /* The "select_frame" command. With no argument this is a NOP. |
2245 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2246 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2247 | ||
2248 | See parse_frame_specification for more info on proper frame | |
2249 | expressions. */ | |
c906108c | 2250 | |
8b93c638 | 2251 | void |
fba45db2 | 2252 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2253 | { |
1c8831c5 | 2254 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
2255 | } |
2256 | ||
033a42c2 MK |
2257 | /* The "frame" command. With no argument, print the selected frame |
2258 | briefly. With an argument, behave like select_frame and then print | |
2259 | the selected frame. */ | |
c906108c | 2260 | |
033a42c2 | 2261 | static void |
fba45db2 | 2262 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
2263 | { |
2264 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 2265 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2266 | } |
2267 | ||
033a42c2 | 2268 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 2269 | |
7a292a7a | 2270 | static void |
fba45db2 | 2271 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 2272 | { |
033a42c2 | 2273 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 2274 | } |
c906108c | 2275 | |
033a42c2 MK |
2276 | /* Select the frame up one or COUNT_EXP stack levels from the |
2277 | previously selected frame, and print it briefly. */ | |
c906108c | 2278 | |
c906108c | 2279 | static void |
fba45db2 | 2280 | up_silently_base (char *count_exp) |
c906108c | 2281 | { |
033a42c2 MK |
2282 | struct frame_info *frame; |
2283 | int count = 1; | |
2284 | ||
c906108c | 2285 | if (count_exp) |
bb518678 | 2286 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2287 | |
033a42c2 MK |
2288 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2289 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2290 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2291 | select_frame (frame); |
c906108c SS |
2292 | } |
2293 | ||
2294 | static void | |
fba45db2 | 2295 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2296 | { |
c5aa993b | 2297 | up_silently_base (count_exp); |
c906108c SS |
2298 | } |
2299 | ||
2300 | static void | |
fba45db2 | 2301 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2302 | { |
2303 | up_silently_base (count_exp); | |
b04f3ab4 | 2304 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2305 | } |
2306 | ||
033a42c2 MK |
2307 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2308 | selected frame, and print it briefly. */ | |
c906108c | 2309 | |
c906108c | 2310 | static void |
fba45db2 | 2311 | down_silently_base (char *count_exp) |
c906108c | 2312 | { |
52f0bd74 | 2313 | struct frame_info *frame; |
033a42c2 | 2314 | int count = -1; |
f89b749f | 2315 | |
c906108c | 2316 | if (count_exp) |
bb518678 | 2317 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2318 | |
033a42c2 MK |
2319 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2320 | if (count != 0 && count_exp == NULL) | |
c906108c | 2321 | { |
033a42c2 MK |
2322 | /* We only do this if COUNT_EXP is not specified. That way |
2323 | "down" means to really go down (and let me know if that is | |
2324 | impossible), but "down 9999" can be used to mean go all the | |
2325 | way down without getting an error. */ | |
c906108c | 2326 | |
033a42c2 | 2327 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2328 | } |
2329 | ||
0f7d239c | 2330 | select_frame (frame); |
c906108c SS |
2331 | } |
2332 | ||
c906108c | 2333 | static void |
fba45db2 | 2334 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2335 | { |
2336 | down_silently_base (count_exp); | |
c906108c SS |
2337 | } |
2338 | ||
2339 | static void | |
fba45db2 | 2340 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2341 | { |
2342 | down_silently_base (count_exp); | |
b04f3ab4 | 2343 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2344 | } |
2345 | \f | |
033a42c2 | 2346 | |
8b93c638 | 2347 | void |
fba45db2 | 2348 | return_command (char *retval_exp, int from_tty) |
c906108c | 2349 | { |
901900c4 MGD |
2350 | /* Initialize it just to avoid a GCC false warning. */ |
2351 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2352 | struct frame_info *thisframe; |
d80b854b | 2353 | struct gdbarch *gdbarch; |
c906108c | 2354 | struct symbol *thisfun; |
3d6d86c6 | 2355 | struct value *return_value = NULL; |
6a3a010b | 2356 | struct value *function = NULL; |
fc70c2a0 | 2357 | const char *query_prefix = ""; |
c906108c | 2358 | |
5ed92fa8 UW |
2359 | thisframe = get_selected_frame ("No selected frame."); |
2360 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2361 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2362 | |
edb3359d DJ |
2363 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2364 | error (_("Can not force return from an inlined function.")); | |
2365 | ||
fc70c2a0 AC |
2366 | /* Compute the return value. If the computation triggers an error, |
2367 | let it bail. If the return type can't be handled, set | |
2368 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2369 | message. */ | |
c906108c SS |
2370 | if (retval_exp) |
2371 | { | |
61ff14c6 JK |
2372 | struct expression *retval_expr = parse_expression (retval_exp); |
2373 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2374 | struct type *return_type = NULL; |
2375 | ||
fc70c2a0 AC |
2376 | /* Compute the return value. Should the computation fail, this |
2377 | call throws an error. */ | |
61ff14c6 | 2378 | return_value = evaluate_expression (retval_expr); |
c906108c | 2379 | |
fc70c2a0 AC |
2380 | /* Cast return value to the return type of the function. Should |
2381 | the cast fail, this call throws an error. */ | |
c906108c SS |
2382 | if (thisfun != NULL) |
2383 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2384 | if (return_type == NULL) | |
61ff14c6 | 2385 | { |
9eaf6705 TT |
2386 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2387 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2388 | error (_("Return value type not available for selected " |
2389 | "stack frame.\n" | |
2390 | "Please use an explicit cast of the value to return.")); | |
2391 | return_type = value_type (return_value); | |
2392 | } | |
2393 | do_cleanups (old_chain); | |
3e9a183c | 2394 | CHECK_TYPEDEF (return_type); |
c906108c SS |
2395 | return_value = value_cast (return_type, return_value); |
2396 | ||
fc70c2a0 AC |
2397 | /* Make sure the value is fully evaluated. It may live in the |
2398 | stack frame we're about to pop. */ | |
d69fe07e | 2399 | if (value_lazy (return_value)) |
c906108c | 2400 | value_fetch_lazy (return_value); |
c906108c | 2401 | |
6a3a010b MR |
2402 | if (thisfun != NULL) |
2403 | function = read_var_value (thisfun, thisframe); | |
2404 | ||
bbfdfe1c | 2405 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2406 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2407 | /* If the return-type is "void", don't try to find the | |
2408 | return-value's location. However, do still evaluate the | |
2409 | return expression so that, even when the expression result | |
2410 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2411 | occur. */ |
667e784f | 2412 | return_value = NULL; |
bbfdfe1c | 2413 | else if (thisfun != NULL) |
fc70c2a0 | 2414 | { |
bbfdfe1c DM |
2415 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2416 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2417 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2418 | { | |
2419 | query_prefix = "The location at which to store the " | |
2420 | "function's return value is unknown.\n" | |
2421 | "If you continue, the return value " | |
2422 | "that you specified will be ignored.\n"; | |
2423 | return_value = NULL; | |
2424 | } | |
fc70c2a0 | 2425 | } |
c906108c SS |
2426 | } |
2427 | ||
fc70c2a0 AC |
2428 | /* Does an interactive user really want to do this? Include |
2429 | information, such as how well GDB can handle the return value, in | |
2430 | the query message. */ | |
2431 | if (from_tty) | |
2432 | { | |
2433 | int confirmed; | |
433759f7 | 2434 | |
fc70c2a0 | 2435 | if (thisfun == NULL) |
e2e0b3e5 | 2436 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2437 | query_prefix); |
2438 | else | |
e2e0b3e5 | 2439 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2440 | SYMBOL_PRINT_NAME (thisfun)); |
2441 | if (!confirmed) | |
8a3fe4f8 | 2442 | error (_("Not confirmed")); |
fc70c2a0 | 2443 | } |
c906108c | 2444 | |
a45ae3ed UW |
2445 | /* Discard the selected frame and all frames inner-to it. */ |
2446 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2447 | |
a1f5b845 | 2448 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2449 | if (return_value != NULL) |
2450 | { | |
df407dfe | 2451 | struct type *return_type = value_type (return_value); |
7500260a | 2452 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2453 | |
bbfdfe1c DM |
2454 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2455 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2456 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2457 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2458 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2459 | } |
1a2aab69 | 2460 | |
fc70c2a0 AC |
2461 | /* If we are at the end of a call dummy now, pop the dummy frame |
2462 | too. */ | |
e8bcf01f AC |
2463 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2464 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2465 | |
c906108c | 2466 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2467 | if (from_tty) |
2468 | frame_command ("0", 1); | |
2469 | else | |
2470 | select_frame_command ("0", 0); | |
2471 | } | |
2472 | ||
033a42c2 | 2473 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2474 | is within the current stack frame. */ |
c906108c SS |
2475 | |
2476 | struct function_bounds | |
2477 | { | |
2478 | CORE_ADDR low, high; | |
2479 | }; | |
2480 | ||
2481 | static void | |
fba45db2 | 2482 | func_command (char *arg, int from_tty) |
c906108c | 2483 | { |
033a42c2 | 2484 | struct frame_info *frame; |
c906108c SS |
2485 | int found = 0; |
2486 | struct symtabs_and_lines sals; | |
2487 | int i; | |
2488 | int level = 1; | |
033a42c2 | 2489 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2490 | struct cleanup *cleanups; |
c906108c | 2491 | |
033a42c2 | 2492 | if (arg != NULL) |
c906108c SS |
2493 | return; |
2494 | ||
033a42c2 | 2495 | frame = parse_frame_specification ("0"); |
39cf75f7 | 2496 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2497 | cleanups = make_cleanup (xfree, sals.sals); |
c906108c SS |
2498 | func_bounds = (struct function_bounds *) xmalloc ( |
2499 | sizeof (struct function_bounds) * sals.nelts); | |
f8eba3c6 | 2500 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2501 | for (i = 0; (i < sals.nelts && !found); i++) |
2502 | { | |
f8eba3c6 TT |
2503 | if (sals.sals[i].pspace != current_program_space) |
2504 | func_bounds[i].low = func_bounds[i].high = 0; | |
2505 | else if (sals.sals[i].pc == 0 | |
2506 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2507 | &func_bounds[i].low, | |
2508 | &func_bounds[i].high) == 0) | |
c906108c | 2509 | { |
033a42c2 | 2510 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2511 | } |
2512 | } | |
2513 | ||
2514 | do | |
2515 | { | |
2516 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2517 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2518 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2519 | if (!found) |
2520 | { | |
2521 | level = 1; | |
033a42c2 | 2522 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2523 | } |
2524 | } | |
2525 | while (!found && level == 0); | |
2526 | ||
f8eba3c6 | 2527 | do_cleanups (cleanups); |
c906108c SS |
2528 | |
2529 | if (!found) | |
a3f17187 | 2530 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2531 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2532 | select_and_print_frame (frame); |
c906108c SS |
2533 | } |
2534 | ||
2535 | /* Gets the language of the current frame. */ | |
2536 | ||
2537 | enum language | |
fba45db2 | 2538 | get_frame_language (void) |
c906108c | 2539 | { |
206415a3 | 2540 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2541 | |
033a42c2 | 2542 | if (frame) |
c906108c | 2543 | { |
e3eebbd7 PA |
2544 | volatile struct gdb_exception ex; |
2545 | CORE_ADDR pc = 0; | |
2546 | struct symtab *s; | |
2547 | ||
7ae4c3a5 | 2548 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2549 | associated symtab. To retrieve this symtab, we use the frame |
2550 | PC. However we cannot use the frame PC as is, because it | |
2551 | usually points to the instruction following the "call", which | |
2552 | is sometimes the first instruction of another function. So | |
2553 | we rely on get_frame_address_in_block(), it provides us with | |
2554 | a PC that is guaranteed to be inside the frame's code | |
2555 | block. */ | |
033a42c2 | 2556 | |
e3eebbd7 PA |
2557 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2558 | { | |
2559 | pc = get_frame_address_in_block (frame); | |
2560 | } | |
2561 | if (ex.reason < 0) | |
2562 | { | |
2563 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2564 | throw_exception (ex); | |
2565 | } | |
2566 | else | |
2567 | { | |
2568 | s = find_pc_symtab (pc); | |
2569 | if (s != NULL) | |
2570 | return s->language; | |
2571 | } | |
c906108c | 2572 | } |
c906108c | 2573 | |
033a42c2 | 2574 | return language_unknown; |
c906108c SS |
2575 | } |
2576 | \f | |
033a42c2 MK |
2577 | |
2578 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2579 | void _initialize_stack (void); | |
2580 | ||
c906108c | 2581 | void |
fba45db2 | 2582 | _initialize_stack (void) |
c906108c | 2583 | { |
1bedd215 AC |
2584 | add_com ("return", class_stack, return_command, _("\ |
2585 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2586 | Control remains in the debugger, but when you continue\n\ |
2587 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2588 | If an argument is given, it is an expression for the value to return.")); |
2589 | ||
2590 | add_com ("up", class_stack, up_command, _("\ | |
2591 | Select and print stack frame that called this one.\n\ | |
2592 | An argument says how many frames up to go.")); | |
2593 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2594 | Same as the `up' command, but does not print anything.\n\ | |
2595 | This is useful in command scripts.")); | |
2596 | ||
2597 | add_com ("down", class_stack, down_command, _("\ | |
2598 | Select and print stack frame called by this one.\n\ | |
2599 | An argument says how many frames down to go.")); | |
c906108c SS |
2600 | add_com_alias ("do", "down", class_stack, 1); |
2601 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2602 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2603 | Same as the `down' command, but does not print anything.\n\ | |
2604 | This is useful in command scripts.")); | |
c906108c | 2605 | |
1bedd215 | 2606 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2607 | Select and print a stack frame.\nWith no argument, \ |
2608 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2609 | An argument specifies the frame to select.\n\ |
2610 | It can be a stack frame number or the address of the frame.\n\ | |
2611 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2612 | a command file or a user-defined command.")); |
c906108c SS |
2613 | |
2614 | add_com_alias ("f", "frame", class_stack, 1); | |
2615 | ||
2616 | if (xdb_commands) | |
2617 | { | |
c5aa993b | 2618 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2619 | _("Print the current stack frame.\n")); |
c906108c SS |
2620 | add_com_alias ("V", "frame", class_stack, 1); |
2621 | } | |
1bedd215 AC |
2622 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2623 | Select a stack frame without printing anything.\n\ | |
c906108c | 2624 | An argument specifies the frame to select.\n\ |
1bedd215 | 2625 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2626 | |
1bedd215 AC |
2627 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2628 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2629 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2630 | 'full' qualifier also prints the values of the local variables.\n\ |
2631 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2632 | on this backtrace.\n")); | |
c906108c SS |
2633 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2634 | if (xdb_commands) | |
2635 | { | |
2636 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2637 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2638 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2639 | and the values of the local variables.\n\ |
2640 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2641 | Usage: T <count>\n")); |
c906108c SS |
2642 | } |
2643 | ||
2644 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2645 | add_info ("stack", backtrace_command, | |
1bedd215 | 2646 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2647 | add_info_alias ("s", "stack", 1); |
2648 | add_info ("frame", frame_info, | |
1bedd215 | 2649 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2650 | add_info_alias ("f", "frame", 1); |
2651 | add_info ("locals", locals_info, | |
1bedd215 | 2652 | _("Local variables of current stack frame.")); |
c906108c | 2653 | add_info ("args", args_info, |
1bedd215 | 2654 | _("Argument variables of current stack frame.")); |
c906108c | 2655 | if (xdb_commands) |
c5aa993b | 2656 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2657 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2658 | |
2659 | if (dbx_commands) | |
1bedd215 AC |
2660 | add_com ("func", class_stack, func_command, _("\ |
2661 | Select the stack frame that contains <func>.\n\ | |
2662 | Usage: func <name>\n")); | |
c906108c | 2663 | |
88408340 JB |
2664 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2665 | print_frame_arguments_choices, &print_frame_arguments, | |
2666 | _("Set printing of non-scalar frame arguments"), | |
2667 | _("Show printing of non-scalar frame arguments"), | |
2668 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2669 | ||
e7045703 DE |
2670 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2671 | &print_raw_frame_arguments, _("\ | |
2672 | Set whether to print frame arguments in raw form."), _("\ | |
2673 | Show whether to print frame arguments in raw form."), _("\ | |
2674 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2675 | pretty-printers for that value."), | |
2676 | NULL, NULL, | |
2677 | &setprintrawlist, &showprintrawlist); | |
2678 | ||
30c33a9f HZ |
2679 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2680 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2681 | Set whether to disassemble next source line or insn when execution stops."), |
2682 | _("\ | |
2683 | Show whether to disassemble next source line or insn when execution stops."), | |
2684 | _("\ | |
80a0ea0f EZ |
2685 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2686 | to displaying the source line itself. If the next source line cannot\n\ | |
2687 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2688 | will display disassembly of next instruction instead of showing the\n\ | |
2689 | source line.\n\ | |
2690 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2691 | cannot be displayed.\n\ | |
2692 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2693 | source line."), | |
30c33a9f HZ |
2694 | NULL, |
2695 | show_disassemble_next_line, | |
2696 | &setlist, &showlist); | |
a362e3d3 | 2697 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2698 | |
2699 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2700 | print_entry_values_choices, &print_entry_values, | |
2701 | _("Set printing of function arguments at function " | |
2702 | "entry"), | |
2703 | _("Show printing of function arguments at function " | |
2704 | "entry"), | |
2705 | _("\ | |
2706 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2707 | in addition to their current values. This option tells GDB whether\n\ | |
2708 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2709 | or both. Note that one or both of these values may be <optimized out>."), | |
2710 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2711 | } |