Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 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" |
898c62f5 | 39 | #include "reggroups.h" |
fc70c2a0 | 40 | #include "regcache.h" |
a77053c2 | 41 | #include "solib.h" |
033a42c2 | 42 | #include "valprint.h" |
8ea051c5 | 43 | #include "gdbthread.h" |
3567439c | 44 | #include "cp-support.h" |
30c33a9f | 45 | #include "disasm.h" |
edb3359d | 46 | #include "inline-frame.h" |
f8eba3c6 | 47 | #include "linespec.h" |
529480d0 | 48 | #include "cli/cli-utils.h" |
77e371c0 | 49 | #include "objfiles.h" |
c906108c | 50 | |
033a42c2 | 51 | #include <ctype.h> |
ccefe4c4 | 52 | #include "symfile.h" |
6dddc817 | 53 | #include "extension.h" |
ccefe4c4 | 54 | |
9a4105ab | 55 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 56 | |
2421fe6f | 57 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
58 | of this setting. */ |
59 | ||
40478521 | 60 | static const char *const print_frame_arguments_choices[] = |
88408340 | 61 | {"all", "scalars", "none", NULL}; |
476f7b68 | 62 | static const char *print_frame_arguments = "scalars"; |
88408340 | 63 | |
e7045703 DE |
64 | /* If non-zero, don't invoke pretty-printers for frame arguments. */ |
65 | static int print_raw_frame_arguments; | |
66 | ||
e18b2753 JK |
67 | /* The possible choices of "set print entry-values", and the value |
68 | of this setting. */ | |
69 | ||
70 | const char print_entry_values_no[] = "no"; | |
71 | const char print_entry_values_only[] = "only"; | |
72 | const char print_entry_values_preferred[] = "preferred"; | |
73 | const char print_entry_values_if_needed[] = "if-needed"; | |
74 | const char print_entry_values_both[] = "both"; | |
75 | const char print_entry_values_compact[] = "compact"; | |
76 | const char print_entry_values_default[] = "default"; | |
40478521 | 77 | static const char *const print_entry_values_choices[] = |
e18b2753 JK |
78 | { |
79 | print_entry_values_no, | |
80 | print_entry_values_only, | |
81 | print_entry_values_preferred, | |
82 | print_entry_values_if_needed, | |
83 | print_entry_values_both, | |
84 | print_entry_values_compact, | |
85 | print_entry_values_default, | |
86 | NULL | |
87 | }; | |
88 | const char *print_entry_values = print_entry_values_default; | |
89 | ||
c378eb4e | 90 | /* Prototypes for local functions. */ |
c906108c | 91 | |
d9fcf2fb JM |
92 | static void print_frame_local_vars (struct frame_info *, int, |
93 | struct ui_file *); | |
c906108c | 94 | |
033a42c2 MK |
95 | static void print_frame (struct frame_info *frame, int print_level, |
96 | enum print_what print_what, int print_args, | |
c5394b80 JM |
97 | struct symtab_and_line sal); |
98 | ||
1bfeeb0f JL |
99 | static void set_last_displayed_sal (int valid, |
100 | struct program_space *pspace, | |
101 | CORE_ADDR addr, | |
102 | struct symtab *symtab, | |
103 | int line); | |
104 | ||
c906108c SS |
105 | /* Zero means do things normally; we are interacting directly with the |
106 | user. One means print the full filename and linenumber when a | |
107 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
108 | parse. Two means print similar annotations, but in many more | |
109 | cases and in a slightly different syntax. */ | |
110 | ||
111 | int annotation_level = 0; | |
1bfeeb0f JL |
112 | |
113 | /* These variables hold the last symtab and line we displayed to the user. | |
114 | * This is where we insert a breakpoint or a skiplist entry by default. */ | |
115 | static int last_displayed_sal_valid = 0; | |
116 | static struct program_space *last_displayed_pspace = 0; | |
117 | static CORE_ADDR last_displayed_addr = 0; | |
118 | static struct symtab *last_displayed_symtab = 0; | |
119 | static int last_displayed_line = 0; | |
c906108c | 120 | \f |
c5aa993b | 121 | |
edb3359d DJ |
122 | /* Return 1 if we should display the address in addition to the location, |
123 | because we are in the middle of a statement. */ | |
124 | ||
125 | static int | |
126 | frame_show_address (struct frame_info *frame, | |
127 | struct symtab_and_line sal) | |
128 | { | |
129 | /* If there is a line number, but no PC, then there is no location | |
130 | information associated with this sal. The only way that should | |
131 | happen is for the call sites of inlined functions (SAL comes from | |
132 | find_frame_sal). Otherwise, we would have some PC range if the | |
133 | SAL came from a line table. */ | |
134 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
135 | { | |
136 | if (get_next_frame (frame) == NULL) | |
137 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
138 | else | |
139 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
140 | return 0; | |
141 | } | |
142 | ||
143 | return get_frame_pc (frame) != sal.pc; | |
144 | } | |
145 | ||
033a42c2 | 146 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
147 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
148 | relative level, function name, argument list, and file name and | |
149 | line number. If the frame's PC is not at the beginning of the | |
150 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
151 | |
152 | void | |
033a42c2 | 153 | print_stack_frame (struct frame_info *frame, int print_level, |
08d72866 PA |
154 | enum print_what print_what, |
155 | int set_current_sal) | |
c906108c | 156 | { |
c906108c | 157 | |
aaf9e9fd | 158 | /* For mi, alway print location and address. */ |
79a45e25 | 159 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 160 | print_what = LOC_AND_ADDRESS; |
c906108c | 161 | |
492d29ea | 162 | TRY |
311b5970 | 163 | { |
08d72866 PA |
164 | print_frame_info (frame, print_level, print_what, 1 /* print_args */, |
165 | set_current_sal); | |
166 | if (set_current_sal) | |
5166082f | 167 | set_current_sal_from_frame (frame); |
311b5970 | 168 | } |
492d29ea PA |
169 | CATCH (e, RETURN_MASK_ERROR) |
170 | { | |
171 | } | |
172 | END_CATCH | |
311b5970 | 173 | } |
c906108c | 174 | |
033a42c2 MK |
175 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
176 | the offset of the first nameless argument, and NUM is the number of | |
177 | nameless arguments to print. FIRST is nonzero if this is the first | |
178 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
179 | |
180 | static void | |
033a42c2 | 181 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
182 | int first, struct ui_file *stream) |
183 | { | |
e17a4113 UW |
184 | struct gdbarch *gdbarch = get_frame_arch (frame); |
185 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
186 | int i; |
187 | CORE_ADDR argsaddr; | |
188 | long arg_value; | |
189 | ||
190 | for (i = 0; i < num; i++) | |
191 | { | |
192 | QUIT; | |
033a42c2 | 193 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
194 | if (!argsaddr) |
195 | return; | |
e17a4113 UW |
196 | arg_value = read_memory_integer (argsaddr + start, |
197 | sizeof (int), byte_order); | |
8d3b0994 AC |
198 | if (!first) |
199 | fprintf_filtered (stream, ", "); | |
200 | fprintf_filtered (stream, "%ld", arg_value); | |
201 | first = 0; | |
202 | start += sizeof (int); | |
203 | } | |
204 | } | |
205 | ||
93d86cef JK |
206 | /* Print single argument of inferior function. ARG must be already |
207 | read in. | |
208 | ||
209 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
210 | iff it should not be printed accoring to user settings. */ | |
211 | ||
212 | static void | |
213 | print_frame_arg (const struct frame_arg *arg) | |
214 | { | |
215 | struct ui_out *uiout = current_uiout; | |
93d86cef | 216 | struct cleanup *old_chain; |
f99d8bf4 | 217 | struct ui_file *stb; |
492d29ea | 218 | const char *error_message = NULL; |
93d86cef | 219 | |
f99d8bf4 PA |
220 | stb = mem_fileopen (); |
221 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
222 | |
223 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
224 | gdb_assert (arg->entry_kind == print_entry_values_no |
225 | || arg->entry_kind == print_entry_values_only | |
226 | || (!ui_out_is_mi_like_p (uiout) | |
227 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
228 | |
229 | annotate_arg_begin (); | |
230 | ||
231 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
f99d8bf4 | 232 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 233 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
234 | if (arg->entry_kind == print_entry_values_compact) |
235 | { | |
236 | /* It is OK to provide invalid MI-like stream as with | |
237 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
f99d8bf4 | 238 | fputs_filtered ("=", stb); |
e18b2753 | 239 | |
f99d8bf4 | 240 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
241 | SYMBOL_LANGUAGE (arg->sym), |
242 | DMGL_PARAMS | DMGL_ANSI); | |
243 | } | |
244 | if (arg->entry_kind == print_entry_values_only | |
245 | || arg->entry_kind == print_entry_values_compact) | |
f99d8bf4 | 246 | fputs_filtered ("@entry", stb); |
93d86cef JK |
247 | ui_out_field_stream (uiout, "name", stb); |
248 | annotate_arg_name_end (); | |
249 | ui_out_text (uiout, "="); | |
250 | ||
251 | if (!arg->val && !arg->error) | |
252 | ui_out_text (uiout, "..."); | |
253 | else | |
254 | { | |
255 | if (arg->error) | |
492d29ea | 256 | error_message = arg->error; |
93d86cef JK |
257 | else |
258 | { | |
492d29ea | 259 | TRY |
93d86cef JK |
260 | { |
261 | const struct language_defn *language; | |
262 | struct value_print_options opts; | |
263 | ||
264 | /* Avoid value_print because it will deref ref parameters. We | |
265 | just want to print their addresses. Print ??? for args whose | |
266 | address we do not know. We pass 2 as "recurse" to val_print | |
267 | because our standard indentation here is 4 spaces, and | |
268 | val_print indents 2 for each recurse. */ | |
269 | ||
270 | annotate_arg_value (value_type (arg->val)); | |
271 | ||
272 | /* Use the appropriate language to display our symbol, unless the | |
273 | user forced the language to a specific language. */ | |
274 | if (language_mode == language_mode_auto) | |
275 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
276 | else | |
277 | language = current_language; | |
278 | ||
2a998fc0 | 279 | get_no_prettyformat_print_options (&opts); |
3343315b | 280 | opts.deref_ref = 1; |
e7045703 | 281 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
282 | |
283 | /* True in "summary" mode, false otherwise. */ | |
284 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
285 | ||
f99d8bf4 | 286 | common_val_print (arg->val, stb, 2, &opts, language); |
93d86cef | 287 | } |
492d29ea PA |
288 | CATCH (except, RETURN_MASK_ERROR) |
289 | { | |
290 | error_message = except.message; | |
291 | } | |
292 | END_CATCH | |
93d86cef | 293 | } |
492d29ea | 294 | if (error_message != NULL) |
f99d8bf4 | 295 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
492d29ea | 296 | error_message); |
93d86cef JK |
297 | } |
298 | ||
299 | ui_out_field_stream (uiout, "value", stb); | |
300 | ||
f99d8bf4 | 301 | /* Also invoke ui_out_tuple_end. */ |
93d86cef JK |
302 | do_cleanups (old_chain); |
303 | ||
304 | annotate_arg_end (); | |
305 | } | |
306 | ||
82a0a75f YQ |
307 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
308 | responsible for xfree of ARGP->ERROR. This function never throws an | |
309 | exception. */ | |
310 | ||
311 | void | |
312 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
313 | struct frame_arg *argp) | |
314 | { | |
82a0a75f YQ |
315 | struct value *val = NULL; |
316 | ||
492d29ea PA |
317 | argp->sym = sym; |
318 | argp->val = NULL; | |
319 | argp->error = NULL; | |
320 | ||
321 | TRY | |
82a0a75f | 322 | { |
492d29ea | 323 | argp->val = read_var_value (sym, frame); |
82a0a75f | 324 | } |
492d29ea PA |
325 | CATCH (except, RETURN_MASK_ERROR) |
326 | { | |
327 | argp->error = xstrdup (except.message); | |
328 | } | |
329 | END_CATCH | |
82a0a75f YQ |
330 | } |
331 | ||
93d86cef JK |
332 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is |
333 | responsible for xfree of ARGP->ERROR. This function never throws an | |
334 | exception. */ | |
335 | ||
336 | void | |
337 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 338 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 339 | { |
e18b2753 JK |
340 | struct value *val = NULL, *entryval = NULL; |
341 | char *val_error = NULL, *entryval_error = NULL; | |
342 | int val_equal = 0; | |
93d86cef | 343 | |
e18b2753 JK |
344 | if (print_entry_values != print_entry_values_only |
345 | && print_entry_values != print_entry_values_preferred) | |
346 | { | |
492d29ea | 347 | TRY |
e18b2753 JK |
348 | { |
349 | val = read_var_value (sym, frame); | |
350 | } | |
492d29ea | 351 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 JK |
352 | { |
353 | val_error = alloca (strlen (except.message) + 1); | |
354 | strcpy (val_error, except.message); | |
355 | } | |
492d29ea | 356 | END_CATCH |
e18b2753 JK |
357 | } |
358 | ||
24d6c2a0 TT |
359 | if (SYMBOL_COMPUTED_OPS (sym) != NULL |
360 | && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL | |
e18b2753 JK |
361 | && print_entry_values != print_entry_values_no |
362 | && (print_entry_values != print_entry_values_if_needed | |
363 | || !val || value_optimized_out (val))) | |
364 | { | |
492d29ea | 365 | TRY |
e18b2753 JK |
366 | { |
367 | const struct symbol_computed_ops *ops; | |
368 | ||
369 | ops = SYMBOL_COMPUTED_OPS (sym); | |
370 | entryval = ops->read_variable_at_entry (sym, frame); | |
371 | } | |
492d29ea | 372 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 373 | { |
492d29ea PA |
374 | if (except.error != NO_ENTRY_VALUE_ERROR) |
375 | { | |
376 | entryval_error = (char *) alloca (strlen (except.message) + 1); | |
377 | strcpy (entryval_error, except.message); | |
378 | } | |
e18b2753 | 379 | } |
492d29ea | 380 | END_CATCH |
e18b2753 | 381 | |
492d29ea PA |
382 | if (entryval != NULL && value_optimized_out (entryval)) |
383 | entryval = NULL; | |
e18b2753 JK |
384 | |
385 | if (print_entry_values == print_entry_values_compact | |
386 | || print_entry_values == print_entry_values_default) | |
387 | { | |
388 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
389 | ||
390 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
391 | { | |
744a8059 | 392 | struct type *type = value_type (val); |
e18b2753 | 393 | |
9a0dc9e3 PA |
394 | if (value_lazy (val)) |
395 | value_fetch_lazy (val); | |
396 | if (value_lazy (entryval)) | |
397 | value_fetch_lazy (entryval); | |
398 | ||
399 | if (value_contents_eq (val, 0, entryval, 0, TYPE_LENGTH (type))) | |
e18b2753 | 400 | { |
509f0fd9 JK |
401 | /* Initialize it just to avoid a GCC false warning. */ |
402 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
403 | |
404 | /* DW_AT_GNU_call_site_value does match with the current | |
405 | value. If it is a reference still try to verify if | |
406 | dereferenced DW_AT_GNU_call_site_data_value does not | |
407 | differ. */ | |
408 | ||
492d29ea | 409 | TRY |
a471c594 | 410 | { |
744a8059 | 411 | struct type *type_deref; |
a471c594 JK |
412 | |
413 | val_deref = coerce_ref (val); | |
414 | if (value_lazy (val_deref)) | |
415 | value_fetch_lazy (val_deref); | |
744a8059 | 416 | type_deref = value_type (val_deref); |
a471c594 JK |
417 | |
418 | entryval_deref = coerce_ref (entryval); | |
419 | if (value_lazy (entryval_deref)) | |
420 | value_fetch_lazy (entryval_deref); | |
421 | ||
422 | /* If the reference addresses match but dereferenced | |
423 | content does not match print them. */ | |
424 | if (val != val_deref | |
9a0dc9e3 PA |
425 | && value_contents_eq (val_deref, 0, |
426 | entryval_deref, 0, | |
427 | TYPE_LENGTH (type_deref))) | |
a471c594 JK |
428 | val_equal = 1; |
429 | } | |
492d29ea PA |
430 | CATCH (except, RETURN_MASK_ERROR) |
431 | { | |
432 | /* If the dereferenced content could not be | |
433 | fetched do not display anything. */ | |
434 | if (except.error == NO_ENTRY_VALUE_ERROR) | |
435 | val_equal = 1; | |
436 | else if (except.message != NULL) | |
437 | { | |
438 | entryval_error = (char *) alloca (strlen (except.message) + 1); | |
439 | strcpy (entryval_error, except.message); | |
440 | } | |
441 | } | |
442 | END_CATCH | |
a471c594 JK |
443 | |
444 | /* Value was not a reference; and its content matches. */ | |
445 | if (val == val_deref) | |
446 | val_equal = 1; | |
a471c594 JK |
447 | |
448 | if (val_equal) | |
449 | entryval = NULL; | |
e18b2753 JK |
450 | } |
451 | } | |
452 | ||
453 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
454 | in MI mode. */ | |
455 | ||
456 | if (val_error && entryval_error | |
457 | && strcmp (val_error, entryval_error) == 0) | |
458 | { | |
459 | entryval_error = NULL; | |
460 | ||
461 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
462 | the entry value even if no entry values are present in the | |
463 | inferior. */ | |
464 | } | |
465 | } | |
466 | } | |
467 | ||
468 | if (entryval == NULL) | |
93d86cef | 469 | { |
e18b2753 JK |
470 | if (print_entry_values == print_entry_values_preferred) |
471 | { | |
492d29ea PA |
472 | gdb_assert (val == NULL); |
473 | ||
474 | TRY | |
e18b2753 JK |
475 | { |
476 | val = read_var_value (sym, frame); | |
477 | } | |
492d29ea | 478 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 JK |
479 | { |
480 | val_error = alloca (strlen (except.message) + 1); | |
481 | strcpy (val_error, except.message); | |
482 | } | |
492d29ea | 483 | END_CATCH |
e18b2753 JK |
484 | } |
485 | if (print_entry_values == print_entry_values_only | |
486 | || print_entry_values == print_entry_values_both | |
487 | || (print_entry_values == print_entry_values_preferred | |
488 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
489 | { |
490 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
491 | entryval_error = NULL; | |
492 | } | |
93d86cef | 493 | } |
e18b2753 JK |
494 | if ((print_entry_values == print_entry_values_compact |
495 | || print_entry_values == print_entry_values_if_needed | |
496 | || print_entry_values == print_entry_values_preferred) | |
497 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 498 | { |
e18b2753 JK |
499 | val = NULL; |
500 | val_error = NULL; | |
93d86cef JK |
501 | } |
502 | ||
503 | argp->sym = sym; | |
504 | argp->val = val; | |
505 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
506 | if (!val && !val_error) |
507 | argp->entry_kind = print_entry_values_only; | |
508 | else if ((print_entry_values == print_entry_values_compact | |
509 | || print_entry_values == print_entry_values_default) && val_equal) | |
510 | { | |
511 | argp->entry_kind = print_entry_values_compact; | |
512 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
513 | } | |
514 | else | |
515 | argp->entry_kind = print_entry_values_no; | |
516 | ||
517 | entryargp->sym = sym; | |
518 | entryargp->val = entryval; | |
519 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
520 | if (!entryval && !entryval_error) | |
521 | entryargp->entry_kind = print_entry_values_no; | |
522 | else | |
523 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
524 | } |
525 | ||
033a42c2 MK |
526 | /* Print the arguments of frame FRAME on STREAM, given the function |
527 | FUNC running in that frame (as a symbol), where NUM is the number | |
528 | of arguments according to the stack frame (or -1 if the number of | |
529 | arguments is unknown). */ | |
8d3b0994 | 530 | |
e3168615 | 531 | /* Note that currently the "number of arguments according to the |
033a42c2 | 532 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 533 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
534 | |
535 | static void | |
033a42c2 MK |
536 | print_frame_args (struct symbol *func, struct frame_info *frame, |
537 | int num, struct ui_file *stream) | |
8d3b0994 | 538 | { |
79a45e25 | 539 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 540 | int first = 1; |
8d3b0994 | 541 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
542 | at the highest offset, or -1 if we haven't come to a stack |
543 | argument yet. */ | |
8d3b0994 | 544 | long highest_offset = -1; |
8d3b0994 AC |
545 | /* Number of ints of arguments that we have printed so far. */ |
546 | int args_printed = 0; | |
22e048c9 | 547 | struct cleanup *old_chain; |
f99d8bf4 | 548 | struct ui_file *stb; |
a6bac58e TT |
549 | /* True if we should print arguments, false otherwise. */ |
550 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 551 | |
f99d8bf4 PA |
552 | stb = mem_fileopen (); |
553 | old_chain = make_cleanup_ui_file_delete (stb); | |
8d3b0994 AC |
554 | |
555 | if (func) | |
556 | { | |
3977b71f | 557 | const struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 558 | struct block_iterator iter; |
033a42c2 | 559 | struct symbol *sym; |
8d3b0994 | 560 | |
de4f826b | 561 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 562 | { |
e18b2753 | 563 | struct frame_arg arg, entryarg; |
93d86cef | 564 | |
8d3b0994 AC |
565 | QUIT; |
566 | ||
567 | /* Keep track of the highest stack argument offset seen, and | |
568 | skip over any kinds of symbols we don't care about. */ | |
569 | ||
2a2d4dc3 AS |
570 | if (!SYMBOL_IS_ARGUMENT (sym)) |
571 | continue; | |
572 | ||
8d3b0994 AC |
573 | switch (SYMBOL_CLASS (sym)) |
574 | { | |
575 | case LOC_ARG: | |
576 | case LOC_REF_ARG: | |
577 | { | |
578 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 579 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
580 | |
581 | /* Compute address of next argument by adding the size of | |
582 | this argument and rounding to an int boundary. */ | |
583 | current_offset = | |
584 | ((current_offset + arg_size + sizeof (int) - 1) | |
585 | & ~(sizeof (int) - 1)); | |
586 | ||
033a42c2 MK |
587 | /* If this is the highest offset seen yet, set |
588 | highest_offset. */ | |
8d3b0994 AC |
589 | if (highest_offset == -1 |
590 | || (current_offset > highest_offset)) | |
591 | highest_offset = current_offset; | |
592 | ||
033a42c2 MK |
593 | /* Add the number of ints we're about to print to |
594 | args_printed. */ | |
8d3b0994 AC |
595 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
596 | } | |
597 | ||
033a42c2 MK |
598 | /* We care about types of symbols, but don't need to |
599 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 600 | case LOC_REGISTER: |
8d3b0994 | 601 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
602 | case LOC_COMPUTED: |
603 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 604 | default: |
2a2d4dc3 | 605 | break; |
8d3b0994 AC |
606 | } |
607 | ||
608 | /* We have to look up the symbol because arguments can have | |
609 | two entries (one a parameter, one a local) and the one we | |
610 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 611 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
612 | small structure and gcc2 when the argument type is float |
613 | and it is passed as a double and converted to float by | |
614 | the prologue (in the latter case the type of the LOC_ARG | |
615 | symbol is double and the type of the LOC_LOCAL symbol is | |
616 | float). */ | |
033a42c2 MK |
617 | /* But if the parameter name is null, don't try it. Null |
618 | parameter names occur on the RS/6000, for traceback | |
619 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 620 | |
3567439c | 621 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
622 | { |
623 | struct symbol *nsym; | |
433759f7 | 624 | |
3567439c | 625 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 626 | b, VAR_DOMAIN, NULL); |
55765a25 | 627 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
628 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
629 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 630 | { |
033a42c2 MK |
631 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
632 | that it was passed on the stack and loaded into a | |
633 | register, or passed in a register and stored in a | |
634 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
635 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
636 | |
637 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
638 | |
639 | (1) Because find_saved_registers may be slow for | |
640 | remote debugging. | |
641 | ||
642 | (2) Because registers are often re-used and stack | |
643 | slots rarely (never?) are. Therefore using | |
644 | the stack slot is much less likely to print | |
645 | garbage. | |
8d3b0994 AC |
646 | |
647 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
648 | |
649 | (1) So that the backtrace prints the same value | |
650 | as "print foo". I see no compelling reason | |
651 | why this needs to be the case; having the | |
652 | backtrace print the value which was passed | |
653 | in, and "print foo" print the value as | |
654 | modified within the called function, makes | |
655 | perfect sense to me. | |
656 | ||
657 | Additional note: It might be nice if "info args" | |
658 | displayed both values. | |
659 | ||
660 | One more note: There is a case with SPARC | |
661 | structure passing where we need to use the | |
662 | LOC_REGISTER, but this is dealt with by creating | |
663 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
664 | |
665 | /* Leave sym (the LOC_ARG) alone. */ | |
666 | ; | |
667 | } | |
668 | else | |
669 | sym = nsym; | |
670 | } | |
671 | ||
672 | /* Print the current arg. */ | |
673 | if (!first) | |
674 | ui_out_text (uiout, ", "); | |
675 | ui_out_wrap_hint (uiout, " "); | |
676 | ||
93d86cef JK |
677 | if (!print_args) |
678 | { | |
679 | memset (&arg, 0, sizeof (arg)); | |
680 | arg.sym = sym; | |
e18b2753 JK |
681 | arg.entry_kind = print_entry_values_no; |
682 | memset (&entryarg, 0, sizeof (entryarg)); | |
683 | entryarg.sym = sym; | |
684 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
685 | } |
686 | else | |
e18b2753 | 687 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 688 | |
e18b2753 JK |
689 | if (arg.entry_kind != print_entry_values_only) |
690 | print_frame_arg (&arg); | |
691 | ||
692 | if (entryarg.entry_kind != print_entry_values_no) | |
693 | { | |
694 | if (arg.entry_kind != print_entry_values_only) | |
695 | { | |
696 | ui_out_text (uiout, ", "); | |
697 | ui_out_wrap_hint (uiout, " "); | |
698 | } | |
699 | ||
700 | print_frame_arg (&entryarg); | |
701 | } | |
8d3b0994 | 702 | |
93d86cef | 703 | xfree (arg.error); |
e18b2753 | 704 | xfree (entryarg.error); |
8d3b0994 AC |
705 | |
706 | first = 0; | |
707 | } | |
708 | } | |
709 | ||
710 | /* Don't print nameless args in situations where we don't know | |
711 | enough about the stack to find them. */ | |
712 | if (num != -1) | |
713 | { | |
714 | long start; | |
715 | ||
716 | if (highest_offset == -1) | |
7500260a | 717 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
718 | else |
719 | start = highest_offset; | |
720 | ||
033a42c2 | 721 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
722 | first, stream); |
723 | } | |
033a42c2 | 724 | |
8d3b0994 AC |
725 | do_cleanups (old_chain); |
726 | } | |
727 | ||
033a42c2 MK |
728 | /* Set the current source and line to the location given by frame |
729 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
730 | line is in the center of the next 'list'. */ | |
c789492a | 731 | |
7abfe014 | 732 | void |
5166082f | 733 | set_current_sal_from_frame (struct frame_info *frame) |
c789492a FL |
734 | { |
735 | struct symtab_and_line sal; | |
736 | ||
033a42c2 | 737 | find_frame_sal (frame, &sal); |
5166082f PA |
738 | if (sal.symtab != NULL) |
739 | set_current_source_symtab_and_line (&sal); | |
c789492a FL |
740 | } |
741 | ||
30c33a9f HZ |
742 | /* If ON, GDB will display disassembly of the next source line when |
743 | execution of the program being debugged stops. | |
481df73e HZ |
744 | If AUTO (which is the default), or there's no line info to determine |
745 | the source line of the next instruction, display disassembly of next | |
746 | instruction instead. */ | |
30c33a9f HZ |
747 | |
748 | static enum auto_boolean disassemble_next_line; | |
749 | ||
750 | static void | |
751 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
752 | struct cmd_list_element *c, | |
753 | const char *value) | |
754 | { | |
3e43a32a MS |
755 | fprintf_filtered (file, |
756 | _("Debugger's willingness to use " | |
757 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
758 | value); |
759 | } | |
760 | ||
30c33a9f HZ |
761 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
762 | because it will be broken by filter sometime. */ | |
763 | ||
764 | static void | |
13274fc3 UW |
765 | do_gdb_disassembly (struct gdbarch *gdbarch, |
766 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f | 767 | { |
30c33a9f | 768 | |
492d29ea | 769 | TRY |
30c33a9f | 770 | { |
79a45e25 PA |
771 | gdb_disassembly (gdbarch, current_uiout, 0, |
772 | DISASSEMBLY_RAW_INSN, how_many, | |
773 | low, high); | |
30c33a9f | 774 | } |
492d29ea | 775 | CATCH (exception, RETURN_MASK_ERROR) |
b1d288d3 JK |
776 | { |
777 | /* If an exception was thrown while doing the disassembly, print | |
778 | the error message, to give the user a clue of what happened. */ | |
779 | exception_print (gdb_stderr, exception); | |
780 | } | |
492d29ea | 781 | END_CATCH |
30c33a9f HZ |
782 | } |
783 | ||
033a42c2 | 784 | /* Print information about frame FRAME. The output is format according |
65aa373f | 785 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
786 | PRINT_WHAT is: |
787 | ||
788 | SRC_LINE: Print only source line. | |
789 | LOCATION: Print only location. | |
790 | LOC_AND_SRC: Print location and source line. | |
791 | ||
792 | Used in "where" output, and to emit breakpoint or step | |
793 | messages. */ | |
c906108c | 794 | |
7789c6f5 | 795 | void |
033a42c2 | 796 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
797 | enum print_what print_what, int print_args, |
798 | int set_current_sal) | |
c906108c | 799 | { |
5af949e3 | 800 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 801 | struct symtab_and_line sal; |
c5394b80 JM |
802 | int source_print; |
803 | int location_print; | |
79a45e25 | 804 | struct ui_out *uiout = current_uiout; |
c906108c | 805 | |
033a42c2 | 806 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
807 | || get_frame_type (frame) == SIGTRAMP_FRAME |
808 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 809 | { |
075559bc AC |
810 | struct cleanup *uiout_cleanup |
811 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 812 | |
033a42c2 | 813 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 814 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 815 | |
c906108c | 816 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 817 | to list for this frame. */ |
0faf0076 | 818 | if (print_level) |
52c6a6ac JJ |
819 | { |
820 | ui_out_text (uiout, "#"); | |
0faf0076 | 821 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 822 | frame_relative_level (frame)); |
52c6a6ac | 823 | } |
075559bc | 824 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 825 | { |
075559bc | 826 | annotate_frame_address (); |
5af949e3 UW |
827 | ui_out_field_core_addr (uiout, "addr", |
828 | gdbarch, get_frame_pc (frame)); | |
075559bc | 829 | annotate_frame_address_end (); |
52c6a6ac | 830 | } |
6a3fe0a4 | 831 | |
033a42c2 | 832 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
833 | { |
834 | annotate_function_call (); | |
835 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
836 | } | |
033a42c2 | 837 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
838 | { |
839 | annotate_signal_handler_caller (); | |
840 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
841 | } | |
36f15f55 UW |
842 | else if (get_frame_type (frame) == ARCH_FRAME) |
843 | { | |
844 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
845 | } | |
075559bc | 846 | ui_out_text (uiout, "\n"); |
c906108c | 847 | annotate_frame_end (); |
075559bc | 848 | |
433e77fa HZ |
849 | /* If disassemble-next-line is set to auto or on output the next |
850 | instruction. */ | |
851 | if (disassemble_next_line == AUTO_BOOLEAN_AUTO | |
852 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
853 | do_gdb_disassembly (get_frame_arch (frame), 1, | |
854 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
855 | ||
075559bc | 856 | do_cleanups (uiout_cleanup); |
c906108c SS |
857 | return; |
858 | } | |
859 | ||
033a42c2 MK |
860 | /* If FRAME is not the innermost frame, that normally means that |
861 | FRAME->pc points to *after* the call instruction, and we want to | |
862 | get the line containing the call, never the next line. But if | |
863 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
864 | next frame was not entered as the result of a call, and we want | |
865 | to get the line containing FRAME->pc. */ | |
866 | find_frame_sal (frame, &sal); | |
c906108c | 867 | |
0faf0076 AC |
868 | location_print = (print_what == LOCATION |
869 | || print_what == LOC_AND_ADDRESS | |
870 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
871 | |
872 | if (location_print || !sal.symtab) | |
033a42c2 | 873 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 874 | |
0faf0076 | 875 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 876 | |
30c33a9f HZ |
877 | /* If disassemble-next-line is set to auto or on and doesn't have |
878 | the line debug messages for $pc, output the next instruction. */ | |
879 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
880 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
881 | && source_print && !sal.symtab) | |
13274fc3 UW |
882 | do_gdb_disassembly (get_frame_arch (frame), 1, |
883 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 884 | |
c5394b80 JM |
885 | if (source_print && sal.symtab) |
886 | { | |
887 | int done = 0; | |
0faf0076 | 888 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 889 | && frame_show_address (frame, sal)); |
c5394b80 JM |
890 | |
891 | if (annotation_level) | |
892 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 893 | get_frame_pc (frame)); |
c5394b80 JM |
894 | if (!done) |
895 | { | |
9a4105ab | 896 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
897 | deprecated_print_frame_info_listing_hook (sal.symtab, |
898 | sal.line, | |
899 | sal.line + 1, 0); | |
ba4bbdcb | 900 | else |
c5394b80 | 901 | { |
79a45b7d | 902 | struct value_print_options opts; |
433759f7 | 903 | |
79a45b7d | 904 | get_user_print_options (&opts); |
ba4bbdcb | 905 | /* We used to do this earlier, but that is clearly |
c378eb4e | 906 | wrong. This function is used by many different |
ba4bbdcb KS |
907 | parts of gdb, including normal_stop in infrun.c, |
908 | which uses this to print out the current PC | |
909 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
910 | line. Only the command line really wants this |
911 | behavior. Other UIs probably would like the | |
cbd3c883 | 912 | ability to decide for themselves if it is desired. */ |
79a45b7d | 913 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 914 | { |
5af949e3 UW |
915 | ui_out_field_core_addr (uiout, "addr", |
916 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 917 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
918 | } |
919 | ||
920 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 921 | } |
c5394b80 | 922 | } |
30c33a9f HZ |
923 | |
924 | /* If disassemble-next-line is set to on and there is line debug | |
925 | messages, output assembly codes for next line. */ | |
926 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 927 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
928 | } |
929 | ||
08d72866 | 930 | if (set_current_sal) |
e3eebbd7 PA |
931 | { |
932 | CORE_ADDR pc; | |
933 | ||
934 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 935 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 936 | else |
1bfeeb0f | 937 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 938 | } |
c5394b80 JM |
939 | |
940 | annotate_frame_end (); | |
941 | ||
942 | gdb_flush (gdb_stdout); | |
943 | } | |
944 | ||
1bfeeb0f JL |
945 | /* Remember the last symtab and line we displayed, which we use e.g. |
946 | * as the place to put a breakpoint when the `break' command is | |
947 | * invoked with no arguments. */ | |
948 | ||
949 | static void | |
950 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
951 | CORE_ADDR addr, struct symtab *symtab, | |
952 | int line) | |
953 | { | |
954 | last_displayed_sal_valid = valid; | |
955 | last_displayed_pspace = pspace; | |
956 | last_displayed_addr = addr; | |
957 | last_displayed_symtab = symtab; | |
958 | last_displayed_line = line; | |
4cb6da1c AR |
959 | if (valid && pspace == NULL) |
960 | { | |
4cb6da1c | 961 | clear_last_displayed_sal (); |
e36930bb PA |
962 | internal_error (__FILE__, __LINE__, |
963 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 964 | } |
1bfeeb0f JL |
965 | } |
966 | ||
967 | /* Forget the last sal we displayed. */ | |
968 | ||
969 | void | |
970 | clear_last_displayed_sal (void) | |
971 | { | |
972 | last_displayed_sal_valid = 0; | |
973 | last_displayed_pspace = 0; | |
974 | last_displayed_addr = 0; | |
975 | last_displayed_symtab = 0; | |
976 | last_displayed_line = 0; | |
977 | } | |
978 | ||
979 | /* Is our record of the last sal we displayed valid? If not, | |
980 | * the get_last_displayed_* functions will return NULL or 0, as | |
981 | * appropriate. */ | |
982 | ||
983 | int | |
984 | last_displayed_sal_is_valid (void) | |
985 | { | |
986 | return last_displayed_sal_valid; | |
987 | } | |
988 | ||
989 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
990 | ||
991 | struct program_space * | |
992 | get_last_displayed_pspace (void) | |
993 | { | |
994 | if (last_displayed_sal_valid) | |
995 | return last_displayed_pspace; | |
996 | return 0; | |
997 | } | |
998 | ||
999 | /* Get the address of the last sal we displayed, if it's valid. */ | |
1000 | ||
1001 | CORE_ADDR | |
1002 | get_last_displayed_addr (void) | |
1003 | { | |
1004 | if (last_displayed_sal_valid) | |
1005 | return last_displayed_addr; | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
1010 | ||
1011 | struct symtab* | |
1012 | get_last_displayed_symtab (void) | |
1013 | { | |
1014 | if (last_displayed_sal_valid) | |
1015 | return last_displayed_symtab; | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1020 | ||
1021 | int | |
1022 | get_last_displayed_line (void) | |
1023 | { | |
1024 | if (last_displayed_sal_valid) | |
1025 | return last_displayed_line; | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | /* Get the last sal we displayed, if it's valid. */ | |
1030 | ||
1031 | void | |
1032 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1033 | { | |
1034 | if (last_displayed_sal_valid) | |
1035 | { | |
1036 | sal->pspace = last_displayed_pspace; | |
1037 | sal->pc = last_displayed_addr; | |
1038 | sal->symtab = last_displayed_symtab; | |
1039 | sal->line = last_displayed_line; | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | sal->pspace = 0; | |
1044 | sal->pc = 0; | |
1045 | sal->symtab = 0; | |
1046 | sal->line = 0; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | ||
e9e07ba6 | 1051 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1052 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1053 | |
f8f6f20b | 1054 | void |
55b87a52 | 1055 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1056 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1057 | { |
1058 | struct symbol *func; | |
8b93c638 | 1059 | |
f8f6f20b TJB |
1060 | *funname = NULL; |
1061 | *funlang = language_unknown; | |
e9e07ba6 JK |
1062 | if (funcp) |
1063 | *funcp = NULL; | |
c5394b80 | 1064 | |
edb3359d | 1065 | func = get_frame_function (frame); |
c906108c SS |
1066 | if (func) |
1067 | { | |
1068 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1069 | function (when we are in the first function in a file which |
1070 | is compiled without debugging symbols, the previous function | |
1071 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1072 | that is supposed to tell us where the file with debugging |
1073 | symbols ends has been truncated by ar because it is longer | |
1074 | than 15 characters). This also occurs if the user uses asm() | |
1075 | to create a function but not stabs for it (in a file compiled | |
1076 | with -g). | |
c5aa993b JM |
1077 | |
1078 | So look in the minimal symbol tables as well, and if it comes | |
1079 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1080 | I don't think this can ever cause any problems; there |
1081 | shouldn't be any minimal symbols in the middle of a function; | |
1082 | if this is ever changed many parts of GDB will need to be | |
1083 | changed (and we'll create a find_pc_minimal_function or some | |
1084 | such). */ | |
1085 | ||
7cbd4a93 | 1086 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1087 | |
1088 | /* Don't attempt to do this for inlined functions, which do not | |
1089 | have a corresponding minimal symbol. */ | |
1090 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1091 | msymbol | |
1092 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1093 | else |
1094 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1095 | |
7cbd4a93 | 1096 | if (msymbol.minsym != NULL |
77e371c0 | 1097 | && (BMSYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1098 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1099 | { | |
c906108c SS |
1100 | /* We also don't know anything about the function besides |
1101 | its address and name. */ | |
1102 | func = 0; | |
efd66ac6 TT |
1103 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1104 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1105 | } |
1106 | else | |
1107 | { | |
55b87a52 | 1108 | *funname = xstrdup (SYMBOL_PRINT_NAME (func)); |
f8f6f20b | 1109 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1110 | if (funcp) |
1111 | *funcp = func; | |
f8f6f20b | 1112 | if (*funlang == language_cplus) |
c5aa993b | 1113 | { |
033a42c2 MK |
1114 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1115 | to display the demangled name that we already have | |
1116 | stored in the symbol table, but we stored a version | |
1117 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1118 | display parameters. So remove the parameters. */ |
f8f6f20b | 1119 | char *func_only = cp_remove_params (*funname); |
433759f7 | 1120 | |
3567439c DJ |
1121 | if (func_only) |
1122 | { | |
55b87a52 | 1123 | xfree (*funname); |
f8f6f20b | 1124 | *funname = func_only; |
3567439c | 1125 | } |
c5aa993b | 1126 | } |
c906108c SS |
1127 | } |
1128 | } | |
1129 | else | |
1130 | { | |
7cbd4a93 | 1131 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1132 | CORE_ADDR pc; |
033a42c2 | 1133 | |
e3eebbd7 PA |
1134 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1135 | return; | |
1136 | ||
1137 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1138 | if (msymbol.minsym != NULL) |
c906108c | 1139 | { |
efd66ac6 TT |
1140 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1141 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1142 | } |
1143 | } | |
f8f6f20b TJB |
1144 | } |
1145 | ||
1146 | static void | |
1147 | print_frame (struct frame_info *frame, int print_level, | |
1148 | enum print_what print_what, int print_args, | |
1149 | struct symtab_and_line sal) | |
1150 | { | |
5af949e3 | 1151 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1152 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1153 | char *funname = NULL; |
f8f6f20b | 1154 | enum language funlang = language_unknown; |
f99d8bf4 | 1155 | struct ui_file *stb; |
f8f6f20b TJB |
1156 | struct cleanup *old_chain, *list_chain; |
1157 | struct value_print_options opts; | |
e9e07ba6 | 1158 | struct symbol *func; |
e3eebbd7 PA |
1159 | CORE_ADDR pc = 0; |
1160 | int pc_p; | |
1161 | ||
1162 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1163 | |
f99d8bf4 PA |
1164 | stb = mem_fileopen (); |
1165 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1166 | |
e9e07ba6 | 1167 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1168 | make_cleanup (xfree, funname); |
c906108c | 1169 | |
033a42c2 | 1170 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1171 | gdbarch, pc); |
c5394b80 | 1172 | |
666547aa | 1173 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1174 | |
0faf0076 | 1175 | if (print_level) |
8b93c638 | 1176 | { |
8b93c638 | 1177 | ui_out_text (uiout, "#"); |
0faf0076 | 1178 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1179 | frame_relative_level (frame)); |
8b93c638 | 1180 | } |
79a45b7d TT |
1181 | get_user_print_options (&opts); |
1182 | if (opts.addressprint) | |
e3eebbd7 PA |
1183 | if (!sal.symtab |
1184 | || frame_show_address (frame, sal) | |
0faf0076 | 1185 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1186 | { |
1187 | annotate_frame_address (); | |
e3eebbd7 PA |
1188 | if (pc_p) |
1189 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1190 | else | |
1191 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1192 | annotate_frame_address_end (); |
1193 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1194 | } |
1195 | annotate_frame_function_name (); | |
f99d8bf4 | 1196 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1197 | funlang, DMGL_ANSI); |
8b93c638 JM |
1198 | ui_out_field_stream (uiout, "func", stb); |
1199 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1200 | annotate_frame_args (); |
1201 | ||
8b93c638 | 1202 | ui_out_text (uiout, " ("); |
0faf0076 | 1203 | if (print_args) |
c906108c | 1204 | { |
311b5970 JK |
1205 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1206 | int numargs; | |
d493eb33 | 1207 | struct cleanup *args_list_chain; |
433759f7 | 1208 | |
311b5970 JK |
1209 | if (gdbarch_frame_num_args_p (gdbarch)) |
1210 | { | |
1211 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1212 | gdb_assert (numargs >= 0); | |
1213 | } | |
1214 | else | |
1215 | numargs = -1; | |
1216 | ||
68c81b54 | 1217 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
492d29ea | 1218 | TRY |
311b5970 JK |
1219 | { |
1220 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1221 | } | |
492d29ea PA |
1222 | CATCH (e, RETURN_MASK_ERROR) |
1223 | { | |
1224 | } | |
1225 | END_CATCH | |
1226 | ||
c378eb4e | 1227 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1228 | will have " that will not be properly escaped. */ |
666547aa | 1229 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1230 | do_cleanups (args_list_chain); |
c5394b80 JM |
1231 | QUIT; |
1232 | } | |
8b93c638 | 1233 | ui_out_text (uiout, ")"); |
4e04028d | 1234 | if (sal.symtab) |
c5394b80 | 1235 | { |
1b56eb55 JK |
1236 | const char *filename_display; |
1237 | ||
1238 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1239 | annotate_frame_source_begin (); |
8b93c638 JM |
1240 | ui_out_wrap_hint (uiout, " "); |
1241 | ui_out_text (uiout, " at "); | |
1242 | annotate_frame_source_file (); | |
1b56eb55 | 1243 | ui_out_field_string (uiout, "file", filename_display); |
76ff342d DJ |
1244 | if (ui_out_is_mi_like_p (uiout)) |
1245 | { | |
1246 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1247 | |
f35a17b5 | 1248 | ui_out_field_string (uiout, "fullname", fullname); |
76ff342d | 1249 | } |
8b93c638 JM |
1250 | annotate_frame_source_file_end (); |
1251 | ui_out_text (uiout, ":"); | |
1252 | annotate_frame_source_line (); | |
1253 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1254 | annotate_frame_source_end (); |
1255 | } | |
c906108c | 1256 | |
4e04028d | 1257 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1258 | { |
6c95b8df PA |
1259 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1260 | get_frame_pc (frame)); | |
4d1eb6b4 | 1261 | |
c5394b80 | 1262 | if (lib) |
c906108c | 1263 | { |
c5394b80 | 1264 | annotate_frame_where (); |
8b93c638 JM |
1265 | ui_out_wrap_hint (uiout, " "); |
1266 | ui_out_text (uiout, " from "); | |
1267 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1268 | } |
c906108c | 1269 | } |
e514a9d6 | 1270 | |
666547aa | 1271 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1272 | do_cleanups (list_chain); |
8b93c638 JM |
1273 | ui_out_text (uiout, "\n"); |
1274 | do_cleanups (old_chain); | |
c906108c SS |
1275 | } |
1276 | \f | |
c5aa993b | 1277 | |
033a42c2 MK |
1278 | /* Read a frame specification in whatever the appropriate format is |
1279 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
1280 | specification is in any way invalid (so this function never returns | |
1281 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
1282 | the default selected frame was used. */ | |
c906108c | 1283 | |
1c8831c5 AC |
1284 | static struct frame_info * |
1285 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
1286 | int *selected_frame_p) | |
c906108c | 1287 | { |
1c8831c5 AC |
1288 | int numargs; |
1289 | struct value *args[4]; | |
1290 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1291 | |
1c8831c5 AC |
1292 | if (frame_exp == NULL) |
1293 | numargs = 0; | |
1294 | else | |
c906108c | 1295 | { |
1c8831c5 AC |
1296 | numargs = 0; |
1297 | while (1) | |
c906108c | 1298 | { |
1c8831c5 AC |
1299 | char *addr_string; |
1300 | struct cleanup *cleanup; | |
1301 | const char *p; | |
1302 | ||
1303 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1304 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1305 | if (!*frame_exp) |
1306 | break; | |
c906108c | 1307 | |
1c8831c5 AC |
1308 | /* Parse the argument, extract it, save it. */ |
1309 | for (p = frame_exp; | |
1310 | *p && !isspace (*p); | |
1311 | p++); | |
1312 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1313 | frame_exp = p; |
1c8831c5 AC |
1314 | cleanup = make_cleanup (xfree, addr_string); |
1315 | ||
1316 | /* NOTE: Parse and evaluate expression, but do not use | |
1317 | functions such as parse_and_eval_long or | |
1318 | parse_and_eval_address to also extract the value. | |
1319 | Instead value_as_long and value_as_address are used. | |
1320 | This avoids problems with expressions that contain | |
1321 | side-effects. */ | |
1322 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1323 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1324 | args[numargs++] = parse_and_eval (addr_string); |
1325 | ||
1326 | do_cleanups (cleanup); | |
c906108c SS |
1327 | } |
1328 | } | |
1329 | ||
1c8831c5 AC |
1330 | /* If no args, default to the selected frame. */ |
1331 | if (numargs == 0) | |
c906108c | 1332 | { |
1c8831c5 AC |
1333 | if (selected_frame_p != NULL) |
1334 | (*selected_frame_p) = 1; | |
1335 | return get_selected_frame (message); | |
1336 | } | |
c906108c | 1337 | |
1c8831c5 AC |
1338 | /* None of the remaining use the selected frame. */ |
1339 | if (selected_frame_p != NULL) | |
98f276a0 | 1340 | (*selected_frame_p) = 0; |
c906108c | 1341 | |
1c8831c5 AC |
1342 | /* Assume the single arg[0] is an integer, and try using that to |
1343 | select a frame relative to current. */ | |
1344 | if (numargs == 1) | |
1345 | { | |
1346 | struct frame_info *fid; | |
1347 | int level = value_as_long (args[0]); | |
433759f7 | 1348 | |
1c8831c5 AC |
1349 | fid = find_relative_frame (get_current_frame (), &level); |
1350 | if (level == 0) | |
c378eb4e | 1351 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1352 | return fid; |
1353 | } | |
c906108c | 1354 | |
1c8831c5 AC |
1355 | /* Convert each value into a corresponding address. */ |
1356 | { | |
1357 | int i; | |
433759f7 | 1358 | |
1c8831c5 | 1359 | for (i = 0; i < numargs; i++) |
1e275f79 | 1360 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1361 | } |
c5aa993b | 1362 | |
1c8831c5 AC |
1363 | /* Assume that the single arg[0] is an address, use that to identify |
1364 | a frame with a matching ID. Should this also accept stack/pc or | |
1365 | stack/pc/special. */ | |
1366 | if (numargs == 1) | |
1367 | { | |
1368 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1369 | struct frame_info *fid; | |
1370 | ||
1c8831c5 AC |
1371 | /* If (s)he specifies the frame with an address, he deserves |
1372 | what (s)he gets. Still, give the highest one that matches. | |
1373 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1374 | know). */ | |
1375 | for (fid = get_current_frame (); | |
1376 | fid != NULL; | |
1377 | fid = get_prev_frame (fid)) | |
1378 | { | |
1379 | if (frame_id_eq (id, get_frame_id (fid))) | |
1380 | { | |
c7ce8faa DJ |
1381 | struct frame_info *prev_frame; |
1382 | ||
1383 | while (1) | |
1384 | { | |
1385 | prev_frame = get_prev_frame (fid); | |
1386 | if (!prev_frame | |
1387 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1388 | break; | |
1389 | fid = prev_frame; | |
1390 | } | |
1c8831c5 AC |
1391 | return fid; |
1392 | } | |
1393 | } | |
c906108c SS |
1394 | } |
1395 | ||
1c8831c5 AC |
1396 | /* We couldn't identify the frame as an existing frame, but |
1397 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1398 | if (numargs == 1) |
1399 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1400 | else if (numargs == 2) |
1401 | return create_new_frame (addrs[0], addrs[1]); | |
1402 | else | |
8a3fe4f8 | 1403 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1404 | } |
1405 | ||
9c833c82 | 1406 | static struct frame_info * |
1c8831c5 AC |
1407 | parse_frame_specification (char *frame_exp) |
1408 | { | |
1409 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
1410 | } |
1411 | ||
033a42c2 MK |
1412 | /* Print verbosely the selected frame or the frame at address |
1413 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1414 | |
1415 | static void | |
fba45db2 | 1416 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1417 | { |
1418 | struct frame_info *fi; | |
1419 | struct symtab_and_line sal; | |
1420 | struct symbol *func; | |
1421 | struct symtab *s; | |
1422 | struct frame_info *calling_frame_info; | |
167e4384 | 1423 | int numregs; |
0d5cff50 | 1424 | const char *funname = 0; |
c906108c | 1425 | enum language funlang = language_unknown; |
82de1e5b | 1426 | const char *pc_regname; |
1c8831c5 | 1427 | int selected_frame_p; |
7500260a | 1428 | struct gdbarch *gdbarch; |
3567439c | 1429 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1430 | CORE_ADDR frame_pc; |
1431 | int frame_pc_p; | |
e5e6f788 YQ |
1432 | /* Initialize it to avoid "may be used uninitialized" warning. */ |
1433 | CORE_ADDR caller_pc = 0; | |
492d29ea | 1434 | int caller_pc_p = 0; |
c906108c | 1435 | |
1c8831c5 | 1436 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1437 | gdbarch = get_frame_arch (fi); |
c906108c | 1438 | |
82de1e5b AC |
1439 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1440 | is not a good name. */ | |
12368003 | 1441 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1442 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1443 | easily not match that of the internal value returned by |
1444 | get_frame_pc(). */ | |
12368003 | 1445 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1446 | else |
3e8c568d | 1447 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1448 | architectures will often have a hardware register called "pc", |
1449 | and that register's value, again, can easily not match | |
1450 | get_frame_pc(). */ | |
1451 | pc_regname = "pc"; | |
1452 | ||
008f8f2e | 1453 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1454 | find_frame_sal (fi, &sal); |
c906108c | 1455 | func = get_frame_function (fi); |
008f8f2e | 1456 | s = sal.symtab; |
c906108c SS |
1457 | if (func) |
1458 | { | |
3567439c | 1459 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1460 | funlang = SYMBOL_LANGUAGE (func); |
1461 | if (funlang == language_cplus) | |
1462 | { | |
3567439c DJ |
1463 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1464 | to display the demangled name that we already have | |
1465 | stored in the symbol table, but we stored a version | |
1466 | with DMGL_PARAMS turned on, and here we don't want to | |
1467 | display parameters. So remove the parameters. */ | |
1468 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1469 | |
3567439c DJ |
1470 | if (func_only) |
1471 | { | |
1472 | funname = func_only; | |
1473 | make_cleanup (xfree, func_only); | |
1474 | } | |
c5aa993b | 1475 | } |
c906108c | 1476 | } |
008f8f2e | 1477 | else if (frame_pc_p) |
c906108c | 1478 | { |
7cbd4a93 | 1479 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1480 | |
008f8f2e | 1481 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1482 | if (msymbol.minsym != NULL) |
c906108c | 1483 | { |
efd66ac6 TT |
1484 | funname = MSYMBOL_PRINT_NAME (msymbol.minsym); |
1485 | funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1486 | } |
1487 | } | |
1488 | calling_frame_info = get_prev_frame (fi); | |
1489 | ||
1c8831c5 | 1490 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1491 | { |
a3f17187 | 1492 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1493 | frame_relative_level (fi)); |
c906108c SS |
1494 | } |
1495 | else | |
1496 | { | |
a3f17187 | 1497 | printf_filtered (_("Stack frame at ")); |
c906108c | 1498 | } |
5af949e3 | 1499 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1500 | printf_filtered (":\n"); |
82de1e5b | 1501 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1502 | if (frame_pc_p) |
1503 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1504 | else | |
1505 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1506 | |
1507 | wrap_here (" "); | |
1508 | if (funname) | |
1509 | { | |
1510 | printf_filtered (" in "); | |
1511 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1512 | DMGL_ANSI | DMGL_PARAMS); | |
1513 | } | |
1514 | wrap_here (" "); | |
1515 | if (sal.symtab) | |
05cba821 JK |
1516 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1517 | sal.line); | |
c906108c SS |
1518 | puts_filtered ("; "); |
1519 | wrap_here (" "); | |
782d47df PA |
1520 | printf_filtered ("saved %s = ", pc_regname); |
1521 | ||
492d29ea | 1522 | TRY |
782d47df PA |
1523 | { |
1524 | caller_pc = frame_unwind_caller_pc (fi); | |
492d29ea | 1525 | caller_pc_p = 1; |
782d47df | 1526 | } |
492d29ea | 1527 | CATCH (ex, RETURN_MASK_ERROR) |
782d47df PA |
1528 | { |
1529 | switch (ex.error) | |
1530 | { | |
1531 | case NOT_AVAILABLE_ERROR: | |
1532 | val_print_unavailable (gdb_stdout); | |
1533 | break; | |
1534 | case OPTIMIZED_OUT_ERROR: | |
1535 | val_print_not_saved (gdb_stdout); | |
1536 | break; | |
1537 | default: | |
1538 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1539 | break; | |
1540 | } | |
1541 | } | |
492d29ea PA |
1542 | END_CATCH |
1543 | ||
1544 | if (caller_pc_p) | |
782d47df | 1545 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
c906108c SS |
1546 | printf_filtered ("\n"); |
1547 | ||
55feb689 DJ |
1548 | if (calling_frame_info == NULL) |
1549 | { | |
1550 | enum unwind_stop_reason reason; | |
1551 | ||
1552 | reason = get_frame_unwind_stop_reason (fi); | |
1553 | if (reason != UNWIND_NO_REASON) | |
1554 | printf_filtered (_(" Outermost frame: %s\n"), | |
53e8a631 | 1555 | frame_stop_reason_string (fi)); |
55feb689 | 1556 | } |
111c6489 JK |
1557 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1558 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1559 | else if (get_frame_type (fi) == INLINE_FRAME) |
1560 | printf_filtered (" inlined into frame %d", | |
1561 | frame_relative_level (get_prev_frame (fi))); | |
1562 | else | |
c906108c SS |
1563 | { |
1564 | printf_filtered (" called by frame at "); | |
5af949e3 | 1565 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1566 | gdb_stdout); |
c906108c | 1567 | } |
75e3c1f9 | 1568 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1569 | puts_filtered (","); |
1570 | wrap_here (" "); | |
75e3c1f9 | 1571 | if (get_next_frame (fi)) |
c906108c SS |
1572 | { |
1573 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1574 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1575 | gdb_stdout); |
c906108c | 1576 | } |
75e3c1f9 | 1577 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1578 | puts_filtered ("\n"); |
55feb689 | 1579 | |
c906108c | 1580 | if (s) |
1058bca7 AC |
1581 | printf_filtered (" source language %s.\n", |
1582 | language_str (s->language)); | |
c906108c | 1583 | |
c906108c SS |
1584 | { |
1585 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1586 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1587 | /* Number of args for this frame, or -1 if unknown. */ |
1588 | int numargs; | |
1589 | ||
1590 | if (arg_list == 0) | |
1591 | printf_filtered (" Arglist at unknown address.\n"); | |
1592 | else | |
1593 | { | |
1594 | printf_filtered (" Arglist at "); | |
5af949e3 | 1595 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1596 | printf_filtered (","); |
1597 | ||
7500260a | 1598 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1599 | { |
1600 | numargs = -1; | |
1601 | puts_filtered (" args: "); | |
1602 | } | |
c906108c | 1603 | else |
983a287a | 1604 | { |
7500260a | 1605 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1606 | gdb_assert (numargs >= 0); |
1607 | if (numargs == 0) | |
1608 | puts_filtered (" no args."); | |
1609 | else if (numargs == 1) | |
1610 | puts_filtered (" 1 arg: "); | |
1611 | else | |
1612 | printf_filtered (" %d args: ", numargs); | |
1613 | } | |
c906108c SS |
1614 | print_frame_args (func, fi, numargs, gdb_stdout); |
1615 | puts_filtered ("\n"); | |
1616 | } | |
1617 | } | |
1618 | { | |
1619 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1620 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1621 | |
1622 | if (arg_list == 0) | |
1623 | printf_filtered (" Locals at unknown address,"); | |
1624 | else | |
1625 | { | |
1626 | printf_filtered (" Locals at "); | |
5af949e3 | 1627 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1628 | printf_filtered (","); |
1629 | } | |
1630 | } | |
1631 | ||
4f460812 AC |
1632 | /* Print as much information as possible on the location of all the |
1633 | registers. */ | |
1634 | { | |
1635 | enum lval_type lval; | |
1636 | int optimized; | |
0fdb4f18 | 1637 | int unavailable; |
4f460812 AC |
1638 | CORE_ADDR addr; |
1639 | int realnum; | |
1640 | int count; | |
1641 | int i; | |
1642 | int need_nl = 1; | |
1643 | ||
1644 | /* The sp is special; what's displayed isn't the save address, but | |
1645 | the value of the previous frame's sp. This is a legacy thing, | |
1646 | at one stage the frame cached the previous frame's SP instead | |
1647 | of its address, hence it was easiest to just display the cached | |
1648 | value. */ | |
7500260a | 1649 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1650 | { |
1651 | /* Find out the location of the saved stack pointer with out | |
1652 | actually evaluating it. */ | |
7500260a | 1653 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1654 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1655 | &realnum, NULL); |
0fdb4f18 | 1656 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1657 | { |
e17a4113 UW |
1658 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1659 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1660 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1661 | CORE_ADDR sp; |
433759f7 | 1662 | |
7500260a | 1663 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1664 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1665 | &realnum, value); |
af1342ab AC |
1666 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1667 | stack pointer was packed as an unsigned integer. That | |
1668 | may or may not be valid. */ | |
e17a4113 | 1669 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1670 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1671 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1672 | printf_filtered ("\n"); |
1673 | need_nl = 0; | |
c906108c | 1674 | } |
0fdb4f18 | 1675 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1676 | { |
1677 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1678 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1679 | printf_filtered ("\n"); |
1680 | need_nl = 0; | |
1681 | } | |
0fdb4f18 | 1682 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1683 | { |
1684 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1685 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1686 | need_nl = 0; |
1687 | } | |
1688 | /* else keep quiet. */ | |
1689 | } | |
1690 | ||
1691 | count = 0; | |
7500260a UW |
1692 | numregs = gdbarch_num_regs (gdbarch) |
1693 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1694 | for (i = 0; i < numregs; i++) |
7500260a UW |
1695 | if (i != gdbarch_sp_regnum (gdbarch) |
1696 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1697 | { |
1698 | /* Find out the location of the saved register without | |
1699 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1700 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1701 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1702 | /* For moment, only display registers that were saved on the |
1703 | stack. */ | |
0fdb4f18 | 1704 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1705 | { |
1706 | if (count == 0) | |
1707 | puts_filtered (" Saved registers:\n "); | |
1708 | else | |
1709 | puts_filtered (","); | |
1710 | wrap_here (" "); | |
c9f4d572 | 1711 | printf_filtered (" %s at ", |
7500260a | 1712 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1713 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1714 | count++; |
1715 | } | |
1716 | } | |
1717 | if (count || need_nl) | |
c906108c | 1718 | puts_filtered ("\n"); |
4f460812 | 1719 | } |
3567439c DJ |
1720 | |
1721 | do_cleanups (back_to); | |
c906108c SS |
1722 | } |
1723 | ||
033a42c2 MK |
1724 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1725 | frames. */ | |
c906108c SS |
1726 | |
1727 | static void | |
1e611234 PM |
1728 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1729 | int from_tty) | |
c906108c SS |
1730 | { |
1731 | struct frame_info *fi; | |
52f0bd74 AC |
1732 | int count; |
1733 | int i; | |
1734 | struct frame_info *trailing; | |
1e611234 | 1735 | int trailing_level, py_start = 0, py_end = 0; |
6dddc817 | 1736 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
c906108c SS |
1737 | |
1738 | if (!target_has_stack) | |
8a3fe4f8 | 1739 | error (_("No stack.")); |
c906108c | 1740 | |
033a42c2 MK |
1741 | /* The following code must do two things. First, it must set the |
1742 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1743 | printing. Second, it must set the variable count to the number |
1744 | of frames which we should print, or -1 if all of them. */ | |
1745 | trailing = get_current_frame (); | |
d082b2bb | 1746 | |
c906108c SS |
1747 | trailing_level = 0; |
1748 | if (count_exp) | |
1749 | { | |
bb518678 | 1750 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1751 | if (count < 0) |
1752 | { | |
1753 | struct frame_info *current; | |
1754 | ||
1e611234 | 1755 | py_start = count; |
c906108c SS |
1756 | count = -count; |
1757 | ||
1758 | current = trailing; | |
1759 | while (current && count--) | |
1760 | { | |
1761 | QUIT; | |
1762 | current = get_prev_frame (current); | |
1763 | } | |
c5aa993b | 1764 | |
033a42c2 MK |
1765 | /* Will stop when CURRENT reaches the top of the stack. |
1766 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1767 | while (current) |
1768 | { | |
1769 | QUIT; | |
1770 | trailing = get_prev_frame (trailing); | |
1771 | current = get_prev_frame (current); | |
1772 | trailing_level++; | |
1773 | } | |
c5aa993b | 1774 | |
c906108c SS |
1775 | count = -1; |
1776 | } | |
1e611234 PM |
1777 | else |
1778 | { | |
1779 | py_start = 0; | |
1780 | py_end = count; | |
1781 | } | |
c906108c SS |
1782 | } |
1783 | else | |
1e611234 PM |
1784 | { |
1785 | py_end = -1; | |
1786 | count = -1; | |
1787 | } | |
c906108c SS |
1788 | |
1789 | if (info_verbose) | |
1790 | { | |
033a42c2 MK |
1791 | /* Read in symbols for all of the frames. Need to do this in a |
1792 | separate pass so that "Reading in symbols for xxx" messages | |
1793 | don't screw up the appearance of the backtrace. Also if | |
1794 | people have strong opinions against reading symbols for | |
c5aa993b | 1795 | backtrace this may have to be an option. */ |
c906108c | 1796 | i = count; |
033a42c2 | 1797 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1798 | { |
ccefe4c4 | 1799 | CORE_ADDR pc; |
433759f7 | 1800 | |
c906108c | 1801 | QUIT; |
ccefe4c4 | 1802 | pc = get_frame_address_in_block (fi); |
2097ae25 | 1803 | expand_symtab_containing_pc (pc, find_pc_mapped_section (pc)); |
c906108c SS |
1804 | } |
1805 | } | |
1806 | ||
1e611234 | 1807 | if (! no_filters) |
c906108c | 1808 | { |
1e611234 | 1809 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
6dddc817 | 1810 | enum ext_lang_frame_args arg_type; |
c906108c | 1811 | |
c906108c | 1812 | if (show_locals) |
1e611234 PM |
1813 | flags |= PRINT_LOCALS; |
1814 | ||
1815 | if (!strcmp (print_frame_arguments, "scalars")) | |
1816 | arg_type = CLI_SCALAR_VALUES; | |
1817 | else if (!strcmp (print_frame_arguments, "all")) | |
1818 | arg_type = CLI_ALL_VALUES; | |
1819 | else | |
1820 | arg_type = NO_VALUES; | |
1821 | ||
6dddc817 DE |
1822 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
1823 | arg_type, current_uiout, | |
1824 | py_start, py_end); | |
1e611234 | 1825 | } |
6dddc817 | 1826 | |
1e611234 PM |
1827 | /* Run the inbuilt backtrace if there are no filters registered, or |
1828 | "no-filters" has been specified from the command. */ | |
6dddc817 | 1829 | if (no_filters || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
1830 | { |
1831 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1832 | { | |
1833 | QUIT; | |
1834 | ||
1835 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1836 | means further attempts to backtrace would fail (on the other | |
1837 | hand, perhaps the code does or could be fixed to make sure | |
1838 | the frame->prev field gets set to NULL in that case). */ | |
1839 | ||
08d72866 | 1840 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1e611234 | 1841 | if (show_locals) |
d0548fa2 PM |
1842 | { |
1843 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1844 | |
d0548fa2 | 1845 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1846 | |
d0548fa2 PM |
1847 | /* print_frame_local_vars invalidates FI. */ |
1848 | fi = frame_find_by_id (frame_id); | |
1849 | if (fi == NULL) | |
1850 | { | |
1851 | trailing = NULL; | |
1852 | warning (_("Unable to restore previously selected frame.")); | |
1853 | break; | |
1854 | } | |
8f043999 | 1855 | } |
55feb689 | 1856 | |
1e611234 PM |
1857 | /* Save the last frame to check for error conditions. */ |
1858 | trailing = fi; | |
1859 | } | |
c906108c | 1860 | |
1e611234 PM |
1861 | /* If we've stopped before the end, mention that. */ |
1862 | if (fi && from_tty) | |
1863 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1864 | |
1e611234 PM |
1865 | /* If we've run out of frames, and the reason appears to be an error |
1866 | condition, print it. */ | |
1867 | if (fi == NULL && trailing != NULL) | |
1868 | { | |
1869 | enum unwind_stop_reason reason; | |
55feb689 | 1870 | |
1e611234 PM |
1871 | reason = get_frame_unwind_stop_reason (trailing); |
1872 | if (reason >= UNWIND_FIRST_ERROR) | |
1873 | printf_filtered (_("Backtrace stopped: %s\n"), | |
53e8a631 | 1874 | frame_stop_reason_string (trailing)); |
1e611234 | 1875 | } |
55feb689 | 1876 | } |
c906108c SS |
1877 | } |
1878 | ||
1879 | static void | |
fba45db2 | 1880 | backtrace_command (char *arg, int from_tty) |
c906108c | 1881 | { |
5fe41fbf | 1882 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1883 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1884 | int user_arg = 0; | |
c906108c | 1885 | |
033a42c2 | 1886 | if (arg) |
c906108c | 1887 | { |
033a42c2 | 1888 | char **argv; |
c906108c SS |
1889 | int i; |
1890 | ||
d1a41061 | 1891 | argv = gdb_buildargv (arg); |
5fe41fbf | 1892 | make_cleanup_freeargv (argv); |
c906108c | 1893 | argc = 0; |
033a42c2 | 1894 | for (i = 0; argv[i]; i++) |
c5aa993b | 1895 | { |
745b8ca0 | 1896 | unsigned int j; |
c5aa993b | 1897 | |
033a42c2 | 1898 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1899 | argv[i][j] = tolower (argv[i][j]); |
1900 | ||
1e611234 PM |
1901 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1902 | no_filters = argc; | |
c5aa993b JM |
1903 | else |
1904 | { | |
1e611234 PM |
1905 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1906 | fulltrace_arg = argc; | |
1907 | else | |
1908 | { | |
1909 | user_arg++; | |
1910 | arglen += strlen (argv[i]); | |
1911 | } | |
c5aa993b | 1912 | } |
1e611234 | 1913 | argc++; |
c5aa993b | 1914 | } |
1e611234 PM |
1915 | arglen += user_arg; |
1916 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1917 | { |
033a42c2 | 1918 | if (arglen > 0) |
c5aa993b | 1919 | { |
033a42c2 | 1920 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1921 | make_cleanup (xfree, arg); |
1922 | arg[0] = 0; | |
1e611234 | 1923 | for (i = 0; i < argc; i++) |
c5aa993b | 1924 | { |
1e611234 | 1925 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1926 | { |
033a42c2 MK |
1927 | strcat (arg, argv[i]); |
1928 | strcat (arg, " "); | |
c5aa993b JM |
1929 | } |
1930 | } | |
1931 | } | |
1932 | else | |
033a42c2 | 1933 | arg = NULL; |
c5aa993b | 1934 | } |
c906108c SS |
1935 | } |
1936 | ||
1e611234 PM |
1937 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1938 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1939 | |
5fe41fbf | 1940 | do_cleanups (old_chain); |
c906108c SS |
1941 | } |
1942 | ||
2c58c0a9 PA |
1943 | /* Iterate over the local variables of a block B, calling CB with |
1944 | CB_DATA. */ | |
c906108c | 1945 | |
2c58c0a9 | 1946 | static void |
3977b71f | 1947 | iterate_over_block_locals (const struct block *b, |
2c58c0a9 PA |
1948 | iterate_over_block_arg_local_vars_cb cb, |
1949 | void *cb_data) | |
c906108c | 1950 | { |
8157b174 | 1951 | struct block_iterator iter; |
de4f826b | 1952 | struct symbol *sym; |
c906108c | 1953 | |
de4f826b | 1954 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1955 | { |
c906108c SS |
1956 | switch (SYMBOL_CLASS (sym)) |
1957 | { | |
1958 | case LOC_LOCAL: | |
1959 | case LOC_REGISTER: | |
1960 | case LOC_STATIC: | |
4c2df51b | 1961 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1962 | if (SYMBOL_IS_ARGUMENT (sym)) |
1963 | break; | |
4357ac6c TT |
1964 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1965 | break; | |
2c58c0a9 | 1966 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1967 | break; |
1968 | ||
1969 | default: | |
1970 | /* Ignore symbols which are not locals. */ | |
1971 | break; | |
1972 | } | |
1973 | } | |
c906108c SS |
1974 | } |
1975 | ||
65c06092 | 1976 | |
c906108c SS |
1977 | /* Same, but print labels. */ |
1978 | ||
65c06092 JB |
1979 | #if 0 |
1980 | /* Commented out, as the code using this function has also been | |
1981 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1982 | was commented out in the first place. The discussion introducing | |
1983 | this change (2007-12-04: Support lexical blocks and function bodies | |
1984 | that occupy non-contiguous address ranges) did not explain why | |
1985 | this change was made. */ | |
c906108c | 1986 | static int |
5af949e3 UW |
1987 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1988 | int *have_default, struct ui_file *stream) | |
c906108c | 1989 | { |
8157b174 | 1990 | struct block_iterator iter; |
52f0bd74 AC |
1991 | struct symbol *sym; |
1992 | int values_printed = 0; | |
c906108c | 1993 | |
de4f826b | 1994 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1995 | { |
3567439c | 1996 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1997 | { |
1998 | if (*have_default) | |
1999 | continue; | |
2000 | *have_default = 1; | |
2001 | } | |
2002 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2003 | { | |
2004 | struct symtab_and_line sal; | |
79a45b7d | 2005 | struct value_print_options opts; |
433759f7 | 2006 | |
c906108c SS |
2007 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
2008 | values_printed = 1; | |
de5ad195 | 2009 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
2010 | get_user_print_options (&opts); |
2011 | if (opts.addressprint) | |
c906108c SS |
2012 | { |
2013 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
2014 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
2015 | stream); | |
c906108c SS |
2016 | } |
2017 | fprintf_filtered (stream, " in file %s, line %d\n", | |
2018 | sal.symtab->filename, sal.line); | |
2019 | } | |
2020 | } | |
033a42c2 | 2021 | |
c906108c SS |
2022 | return values_printed; |
2023 | } | |
65c06092 | 2024 | #endif |
c906108c | 2025 | |
2c58c0a9 PA |
2026 | /* Iterate over all the local variables in block B, including all its |
2027 | superblocks, stopping when the top-level block is reached. */ | |
2028 | ||
2029 | void | |
3977b71f | 2030 | iterate_over_block_local_vars (const struct block *block, |
2c58c0a9 PA |
2031 | iterate_over_block_arg_local_vars_cb cb, |
2032 | void *cb_data) | |
2033 | { | |
2034 | while (block) | |
2035 | { | |
2036 | iterate_over_block_locals (block, cb, cb_data); | |
2037 | /* After handling the function's top-level block, stop. Don't | |
2038 | continue to its superblock, the block of per-file | |
2039 | symbols. */ | |
2040 | if (BLOCK_FUNCTION (block)) | |
2041 | break; | |
2042 | block = BLOCK_SUPERBLOCK (block); | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* Data to be passed around in the calls to the locals and args | |
2047 | iterators. */ | |
c906108c | 2048 | |
2c58c0a9 PA |
2049 | struct print_variable_and_value_data |
2050 | { | |
8f043999 | 2051 | struct frame_id frame_id; |
2c58c0a9 PA |
2052 | int num_tabs; |
2053 | struct ui_file *stream; | |
2054 | int values_printed; | |
2055 | }; | |
2056 | ||
c378eb4e | 2057 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2058 | |
2059 | static void | |
2060 | do_print_variable_and_value (const char *print_name, | |
2061 | struct symbol *sym, | |
2062 | void *cb_data) | |
2063 | { | |
2064 | struct print_variable_and_value_data *p = cb_data; | |
8f043999 JK |
2065 | struct frame_info *frame; |
2066 | ||
2067 | frame = frame_find_by_id (p->frame_id); | |
2068 | if (frame == NULL) | |
2069 | { | |
2070 | warning (_("Unable to restore previously selected frame.")); | |
2071 | return; | |
2072 | } | |
2073 | ||
2074 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2075 | ||
2076 | /* print_variable_and_value invalidates FRAME. */ | |
2077 | frame = NULL; | |
2c58c0a9 | 2078 | |
2c58c0a9 PA |
2079 | p->values_printed = 1; |
2080 | } | |
c906108c | 2081 | |
8f043999 JK |
2082 | /* Print all variables from the innermost up to the function block of FRAME. |
2083 | Print them with values to STREAM indented by NUM_TABS. | |
2084 | ||
2085 | This function will invalidate FRAME. */ | |
2086 | ||
c906108c | 2087 | static void |
033a42c2 | 2088 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2089 | struct ui_file *stream) |
c906108c | 2090 | { |
2c58c0a9 | 2091 | struct print_variable_and_value_data cb_data; |
3977b71f | 2092 | const struct block *block; |
1d4f5741 PA |
2093 | CORE_ADDR pc; |
2094 | ||
2095 | if (!get_frame_pc_if_available (frame, &pc)) | |
2096 | { | |
2097 | fprintf_filtered (stream, | |
2098 | _("PC unavailable, cannot determine locals.\n")); | |
2099 | return; | |
2100 | } | |
c906108c | 2101 | |
2c58c0a9 | 2102 | block = get_frame_block (frame, 0); |
c906108c SS |
2103 | if (block == 0) |
2104 | { | |
2105 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2106 | return; | |
2107 | } | |
c5aa993b | 2108 | |
8f043999 | 2109 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2110 | cb_data.num_tabs = 4 * num_tabs; |
2111 | cb_data.stream = stream; | |
2112 | cb_data.values_printed = 0; | |
2113 | ||
2114 | iterate_over_block_local_vars (block, | |
2115 | do_print_variable_and_value, | |
2116 | &cb_data); | |
c906108c | 2117 | |
8f043999 JK |
2118 | /* do_print_variable_and_value invalidates FRAME. */ |
2119 | frame = NULL; | |
2120 | ||
2c58c0a9 | 2121 | if (!cb_data.values_printed) |
033a42c2 | 2122 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2123 | } |
2124 | ||
c906108c | 2125 | void |
fba45db2 | 2126 | locals_info (char *args, int from_tty) |
c906108c | 2127 | { |
033a42c2 | 2128 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2129 | 0, gdb_stdout); |
c906108c SS |
2130 | } |
2131 | ||
2c58c0a9 PA |
2132 | /* Iterate over all the argument variables in block B. |
2133 | ||
2134 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2135 | ||
2136 | void | |
3977b71f | 2137 | iterate_over_block_arg_vars (const struct block *b, |
2c58c0a9 PA |
2138 | iterate_over_block_arg_local_vars_cb cb, |
2139 | void *cb_data) | |
c906108c | 2140 | { |
8157b174 | 2141 | struct block_iterator iter; |
52f0bd74 | 2142 | struct symbol *sym, *sym2; |
c906108c | 2143 | |
de4f826b | 2144 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2145 | { |
2a2d4dc3 AS |
2146 | /* Don't worry about things which aren't arguments. */ |
2147 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2148 | { |
c906108c SS |
2149 | /* We have to look up the symbol because arguments can have |
2150 | two entries (one a parameter, one a local) and the one we | |
2151 | want is the local, which lookup_symbol will find for us. | |
2152 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2153 | small structure and gcc2 when the argument type is float | |
2154 | and it is passed as a double and converted to float by | |
2155 | the prologue (in the latter case the type of the LOC_ARG | |
2156 | symbol is double and the type of the LOC_LOCAL symbol is | |
2157 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2158 | are not combined in symbol-reading. */ | |
2159 | ||
3567439c | 2160 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 2161 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 2162 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2163 | } |
2164 | } | |
2c58c0a9 PA |
2165 | } |
2166 | ||
8f043999 JK |
2167 | /* Print all argument variables of the function of FRAME. |
2168 | Print them with values to STREAM. | |
2169 | ||
2170 | This function will invalidate FRAME. */ | |
2171 | ||
2c58c0a9 PA |
2172 | static void |
2173 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2174 | { | |
2175 | struct print_variable_and_value_data cb_data; | |
2176 | struct symbol *func; | |
1d4f5741 PA |
2177 | CORE_ADDR pc; |
2178 | ||
2179 | if (!get_frame_pc_if_available (frame, &pc)) | |
2180 | { | |
2181 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2182 | return; | |
2183 | } | |
2c58c0a9 PA |
2184 | |
2185 | func = get_frame_function (frame); | |
2186 | if (func == NULL) | |
2187 | { | |
2188 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2189 | return; | |
2190 | } | |
2191 | ||
8f043999 | 2192 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2193 | cb_data.num_tabs = 0; |
2194 | cb_data.stream = gdb_stdout; | |
2195 | cb_data.values_printed = 0; | |
2196 | ||
2197 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2198 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2199 | |
8f043999 JK |
2200 | /* do_print_variable_and_value invalidates FRAME. */ |
2201 | frame = NULL; | |
2202 | ||
2c58c0a9 | 2203 | if (!cb_data.values_printed) |
033a42c2 | 2204 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2205 | } |
2206 | ||
2207 | void | |
fba45db2 | 2208 | args_info (char *ignore, int from_tty) |
c906108c | 2209 | { |
033a42c2 | 2210 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2211 | gdb_stdout); |
c906108c SS |
2212 | } |
2213 | ||
033a42c2 MK |
2214 | /* Select frame FRAME. Also print the stack frame and show the source |
2215 | if this is the tui version. */ | |
bedfa57b | 2216 | static void |
033a42c2 | 2217 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2218 | { |
033a42c2 MK |
2219 | select_frame (frame); |
2220 | if (frame) | |
08d72866 | 2221 | print_stack_frame (frame, 1, SRC_AND_LOC, 1); |
c906108c | 2222 | } |
c906108c | 2223 | \f |
c906108c | 2224 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2225 | Can return zero under various legitimate circumstances. |
2226 | ||
2227 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2228 | code address within the block returned. We use this to decide | |
2229 | which macros are in scope. */ | |
c906108c | 2230 | |
3977b71f | 2231 | const struct block * |
ae767bfb | 2232 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2233 | { |
d729566a | 2234 | if (!has_stack_frames ()) |
8ea051c5 PA |
2235 | return 0; |
2236 | ||
206415a3 | 2237 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2238 | } |
2239 | ||
2240 | /* Find a frame a certain number of levels away from FRAME. | |
2241 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2242 | Positive means go to earlier frames (up); negative, the reverse. | |
2243 | The int that contains the number of levels is counted toward | |
2244 | zero as the frames for those levels are found. | |
2245 | If the top or bottom frame is reached, that frame is returned, | |
2246 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2247 | how much farther the original request asked to go. */ | |
2248 | ||
2249 | struct frame_info * | |
033a42c2 | 2250 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2251 | { |
033a42c2 MK |
2252 | /* Going up is simple: just call get_prev_frame enough times or |
2253 | until the initial frame is reached. */ | |
c906108c SS |
2254 | while (*level_offset_ptr > 0) |
2255 | { | |
033a42c2 | 2256 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2257 | |
033a42c2 | 2258 | if (!prev) |
c906108c SS |
2259 | break; |
2260 | (*level_offset_ptr)--; | |
2261 | frame = prev; | |
2262 | } | |
033a42c2 | 2263 | |
c906108c | 2264 | /* Going down is just as simple. */ |
033a42c2 | 2265 | while (*level_offset_ptr < 0) |
c906108c | 2266 | { |
033a42c2 | 2267 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2268 | |
033a42c2 MK |
2269 | if (!next) |
2270 | break; | |
2271 | (*level_offset_ptr)++; | |
2272 | frame = next; | |
c906108c | 2273 | } |
033a42c2 | 2274 | |
c906108c SS |
2275 | return frame; |
2276 | } | |
2277 | ||
033a42c2 MK |
2278 | /* The "select_frame" command. With no argument this is a NOP. |
2279 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2280 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2281 | ||
2282 | See parse_frame_specification for more info on proper frame | |
2283 | expressions. */ | |
c906108c | 2284 | |
8b93c638 | 2285 | void |
fba45db2 | 2286 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2287 | { |
1c8831c5 | 2288 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
2289 | } |
2290 | ||
033a42c2 MK |
2291 | /* The "frame" command. With no argument, print the selected frame |
2292 | briefly. With an argument, behave like select_frame and then print | |
2293 | the selected frame. */ | |
c906108c | 2294 | |
033a42c2 | 2295 | static void |
fba45db2 | 2296 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
2297 | { |
2298 | select_frame_command (level_exp, from_tty); | |
08d72866 | 2299 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2300 | } |
2301 | ||
033a42c2 MK |
2302 | /* Select the frame up one or COUNT_EXP stack levels from the |
2303 | previously selected frame, and print it briefly. */ | |
c906108c | 2304 | |
c906108c | 2305 | static void |
d3d3328b | 2306 | up_silently_base (const char *count_exp) |
c906108c | 2307 | { |
033a42c2 MK |
2308 | struct frame_info *frame; |
2309 | int count = 1; | |
2310 | ||
c906108c | 2311 | if (count_exp) |
bb518678 | 2312 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2313 | |
033a42c2 MK |
2314 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2315 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2316 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2317 | select_frame (frame); |
c906108c SS |
2318 | } |
2319 | ||
2320 | static void | |
fba45db2 | 2321 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2322 | { |
c5aa993b | 2323 | up_silently_base (count_exp); |
c906108c SS |
2324 | } |
2325 | ||
2326 | static void | |
fba45db2 | 2327 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2328 | { |
2329 | up_silently_base (count_exp); | |
08d72866 | 2330 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2331 | } |
2332 | ||
033a42c2 MK |
2333 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2334 | selected frame, and print it briefly. */ | |
c906108c | 2335 | |
c906108c | 2336 | static void |
d3d3328b | 2337 | down_silently_base (const char *count_exp) |
c906108c | 2338 | { |
52f0bd74 | 2339 | struct frame_info *frame; |
033a42c2 | 2340 | int count = -1; |
f89b749f | 2341 | |
c906108c | 2342 | if (count_exp) |
bb518678 | 2343 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2344 | |
033a42c2 MK |
2345 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2346 | if (count != 0 && count_exp == NULL) | |
c906108c | 2347 | { |
033a42c2 MK |
2348 | /* We only do this if COUNT_EXP is not specified. That way |
2349 | "down" means to really go down (and let me know if that is | |
2350 | impossible), but "down 9999" can be used to mean go all the | |
2351 | way down without getting an error. */ | |
c906108c | 2352 | |
033a42c2 | 2353 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2354 | } |
2355 | ||
0f7d239c | 2356 | select_frame (frame); |
c906108c SS |
2357 | } |
2358 | ||
c906108c | 2359 | static void |
fba45db2 | 2360 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2361 | { |
2362 | down_silently_base (count_exp); | |
c906108c SS |
2363 | } |
2364 | ||
2365 | static void | |
fba45db2 | 2366 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2367 | { |
2368 | down_silently_base (count_exp); | |
08d72866 | 2369 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2370 | } |
2371 | \f | |
033a42c2 | 2372 | |
8b93c638 | 2373 | void |
fba45db2 | 2374 | return_command (char *retval_exp, int from_tty) |
c906108c | 2375 | { |
901900c4 MGD |
2376 | /* Initialize it just to avoid a GCC false warning. */ |
2377 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2378 | struct frame_info *thisframe; |
d80b854b | 2379 | struct gdbarch *gdbarch; |
c906108c | 2380 | struct symbol *thisfun; |
3d6d86c6 | 2381 | struct value *return_value = NULL; |
6a3a010b | 2382 | struct value *function = NULL; |
fc70c2a0 | 2383 | const char *query_prefix = ""; |
c906108c | 2384 | |
5ed92fa8 UW |
2385 | thisframe = get_selected_frame ("No selected frame."); |
2386 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2387 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2388 | |
edb3359d DJ |
2389 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2390 | error (_("Can not force return from an inlined function.")); | |
2391 | ||
fc70c2a0 AC |
2392 | /* Compute the return value. If the computation triggers an error, |
2393 | let it bail. If the return type can't be handled, set | |
2394 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2395 | message. */ | |
c906108c SS |
2396 | if (retval_exp) |
2397 | { | |
61ff14c6 JK |
2398 | struct expression *retval_expr = parse_expression (retval_exp); |
2399 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2400 | struct type *return_type = NULL; |
2401 | ||
fc70c2a0 AC |
2402 | /* Compute the return value. Should the computation fail, this |
2403 | call throws an error. */ | |
61ff14c6 | 2404 | return_value = evaluate_expression (retval_expr); |
c906108c | 2405 | |
fc70c2a0 AC |
2406 | /* Cast return value to the return type of the function. Should |
2407 | the cast fail, this call throws an error. */ | |
c906108c SS |
2408 | if (thisfun != NULL) |
2409 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2410 | if (return_type == NULL) | |
61ff14c6 | 2411 | { |
9eaf6705 TT |
2412 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2413 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2414 | error (_("Return value type not available for selected " |
2415 | "stack frame.\n" | |
2416 | "Please use an explicit cast of the value to return.")); | |
2417 | return_type = value_type (return_value); | |
2418 | } | |
2419 | do_cleanups (old_chain); | |
3e9a183c | 2420 | CHECK_TYPEDEF (return_type); |
c906108c SS |
2421 | return_value = value_cast (return_type, return_value); |
2422 | ||
fc70c2a0 AC |
2423 | /* Make sure the value is fully evaluated. It may live in the |
2424 | stack frame we're about to pop. */ | |
d69fe07e | 2425 | if (value_lazy (return_value)) |
c906108c | 2426 | value_fetch_lazy (return_value); |
c906108c | 2427 | |
6a3a010b MR |
2428 | if (thisfun != NULL) |
2429 | function = read_var_value (thisfun, thisframe); | |
2430 | ||
bbfdfe1c | 2431 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2432 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2433 | /* If the return-type is "void", don't try to find the | |
2434 | return-value's location. However, do still evaluate the | |
2435 | return expression so that, even when the expression result | |
2436 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2437 | occur. */ |
667e784f | 2438 | return_value = NULL; |
bbfdfe1c | 2439 | else if (thisfun != NULL) |
fc70c2a0 | 2440 | { |
bbfdfe1c DM |
2441 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2442 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2443 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2444 | { | |
2445 | query_prefix = "The location at which to store the " | |
2446 | "function's return value is unknown.\n" | |
2447 | "If you continue, the return value " | |
2448 | "that you specified will be ignored.\n"; | |
2449 | return_value = NULL; | |
2450 | } | |
fc70c2a0 | 2451 | } |
c906108c SS |
2452 | } |
2453 | ||
fc70c2a0 AC |
2454 | /* Does an interactive user really want to do this? Include |
2455 | information, such as how well GDB can handle the return value, in | |
2456 | the query message. */ | |
2457 | if (from_tty) | |
2458 | { | |
2459 | int confirmed; | |
433759f7 | 2460 | |
fc70c2a0 | 2461 | if (thisfun == NULL) |
e2e0b3e5 | 2462 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2463 | query_prefix); |
2464 | else | |
743649fd MW |
2465 | { |
2466 | if (TYPE_NO_RETURN (thisfun->type)) | |
d35b90fb | 2467 | warning (_("Function does not return normally to caller.")); |
743649fd MW |
2468 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
2469 | SYMBOL_PRINT_NAME (thisfun)); | |
2470 | } | |
fc70c2a0 | 2471 | if (!confirmed) |
8a3fe4f8 | 2472 | error (_("Not confirmed")); |
fc70c2a0 | 2473 | } |
c906108c | 2474 | |
a45ae3ed UW |
2475 | /* Discard the selected frame and all frames inner-to it. */ |
2476 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2477 | |
a1f5b845 | 2478 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2479 | if (return_value != NULL) |
2480 | { | |
df407dfe | 2481 | struct type *return_type = value_type (return_value); |
7500260a | 2482 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2483 | |
bbfdfe1c DM |
2484 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2485 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2486 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2487 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2488 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2489 | } |
1a2aab69 | 2490 | |
fc70c2a0 AC |
2491 | /* If we are at the end of a call dummy now, pop the dummy frame |
2492 | too. */ | |
e8bcf01f AC |
2493 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2494 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2495 | |
c906108c | 2496 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2497 | if (from_tty) |
2498 | frame_command ("0", 1); | |
2499 | else | |
2500 | select_frame_command ("0", 0); | |
2501 | } | |
2502 | ||
033a42c2 | 2503 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2504 | is within the current stack frame. */ |
c906108c SS |
2505 | |
2506 | struct function_bounds | |
2507 | { | |
2508 | CORE_ADDR low, high; | |
2509 | }; | |
2510 | ||
2511 | static void | |
fba45db2 | 2512 | func_command (char *arg, int from_tty) |
c906108c | 2513 | { |
033a42c2 | 2514 | struct frame_info *frame; |
c906108c SS |
2515 | int found = 0; |
2516 | struct symtabs_and_lines sals; | |
2517 | int i; | |
2518 | int level = 1; | |
033a42c2 | 2519 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2520 | struct cleanup *cleanups; |
c906108c | 2521 | |
033a42c2 | 2522 | if (arg != NULL) |
c906108c SS |
2523 | return; |
2524 | ||
033a42c2 | 2525 | frame = parse_frame_specification ("0"); |
39cf75f7 | 2526 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2527 | cleanups = make_cleanup (xfree, sals.sals); |
c906108c SS |
2528 | func_bounds = (struct function_bounds *) xmalloc ( |
2529 | sizeof (struct function_bounds) * sals.nelts); | |
f8eba3c6 | 2530 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2531 | for (i = 0; (i < sals.nelts && !found); i++) |
2532 | { | |
f8eba3c6 TT |
2533 | if (sals.sals[i].pspace != current_program_space) |
2534 | func_bounds[i].low = func_bounds[i].high = 0; | |
2535 | else if (sals.sals[i].pc == 0 | |
2536 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2537 | &func_bounds[i].low, | |
2538 | &func_bounds[i].high) == 0) | |
c906108c | 2539 | { |
033a42c2 | 2540 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2541 | } |
2542 | } | |
2543 | ||
2544 | do | |
2545 | { | |
2546 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2547 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2548 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2549 | if (!found) |
2550 | { | |
2551 | level = 1; | |
033a42c2 | 2552 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2553 | } |
2554 | } | |
2555 | while (!found && level == 0); | |
2556 | ||
f8eba3c6 | 2557 | do_cleanups (cleanups); |
c906108c SS |
2558 | |
2559 | if (!found) | |
a3f17187 | 2560 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2561 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2562 | select_and_print_frame (frame); |
c906108c SS |
2563 | } |
2564 | ||
2565 | /* Gets the language of the current frame. */ | |
2566 | ||
2567 | enum language | |
fba45db2 | 2568 | get_frame_language (void) |
c906108c | 2569 | { |
206415a3 | 2570 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2571 | |
033a42c2 | 2572 | if (frame) |
c906108c | 2573 | { |
e3eebbd7 | 2574 | CORE_ADDR pc = 0; |
492d29ea | 2575 | int pc_p = 0; |
e3eebbd7 | 2576 | |
7ae4c3a5 | 2577 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2578 | associated symtab. To retrieve this symtab, we use the frame |
2579 | PC. However we cannot use the frame PC as is, because it | |
2580 | usually points to the instruction following the "call", which | |
2581 | is sometimes the first instruction of another function. So | |
2582 | we rely on get_frame_address_in_block(), it provides us with | |
2583 | a PC that is guaranteed to be inside the frame's code | |
2584 | block. */ | |
033a42c2 | 2585 | |
492d29ea | 2586 | TRY |
e3eebbd7 PA |
2587 | { |
2588 | pc = get_frame_address_in_block (frame); | |
492d29ea | 2589 | pc_p = 1; |
e3eebbd7 | 2590 | } |
492d29ea | 2591 | CATCH (ex, RETURN_MASK_ERROR) |
e3eebbd7 PA |
2592 | { |
2593 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2594 | throw_exception (ex); | |
2595 | } | |
492d29ea PA |
2596 | END_CATCH |
2597 | ||
2598 | if (pc_p) | |
e3eebbd7 | 2599 | { |
43f3e411 DE |
2600 | struct compunit_symtab *cust = find_pc_compunit_symtab (pc); |
2601 | ||
2602 | if (cust != NULL) | |
2603 | return compunit_language (cust); | |
e3eebbd7 | 2604 | } |
c906108c | 2605 | } |
c906108c | 2606 | |
033a42c2 | 2607 | return language_unknown; |
c906108c SS |
2608 | } |
2609 | \f | |
033a42c2 MK |
2610 | |
2611 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2612 | void _initialize_stack (void); | |
2613 | ||
c906108c | 2614 | void |
fba45db2 | 2615 | _initialize_stack (void) |
c906108c | 2616 | { |
1bedd215 AC |
2617 | add_com ("return", class_stack, return_command, _("\ |
2618 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2619 | Control remains in the debugger, but when you continue\n\ |
2620 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2621 | If an argument is given, it is an expression for the value to return.")); |
2622 | ||
2623 | add_com ("up", class_stack, up_command, _("\ | |
2624 | Select and print stack frame that called this one.\n\ | |
2625 | An argument says how many frames up to go.")); | |
2626 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2627 | Same as the `up' command, but does not print anything.\n\ | |
2628 | This is useful in command scripts.")); | |
2629 | ||
2630 | add_com ("down", class_stack, down_command, _("\ | |
2631 | Select and print stack frame called by this one.\n\ | |
2632 | An argument says how many frames down to go.")); | |
c906108c SS |
2633 | add_com_alias ("do", "down", class_stack, 1); |
2634 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2635 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2636 | Same as the `down' command, but does not print anything.\n\ | |
2637 | This is useful in command scripts.")); | |
c906108c | 2638 | |
1bedd215 | 2639 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2640 | Select and print a stack frame.\nWith no argument, \ |
2641 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2642 | An argument specifies the frame to select.\n\ |
2643 | It can be a stack frame number or the address of the frame.\n\ | |
2644 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2645 | a command file or a user-defined command.")); |
c906108c SS |
2646 | |
2647 | add_com_alias ("f", "frame", class_stack, 1); | |
2648 | ||
1bedd215 AC |
2649 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2650 | Select a stack frame without printing anything.\n\ | |
c906108c | 2651 | An argument specifies the frame to select.\n\ |
1bedd215 | 2652 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2653 | |
1bedd215 AC |
2654 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2655 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2656 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2657 | 'full' qualifier also prints the values of the local variables.\n\ |
2658 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2659 | on this backtrace.\n")); | |
c906108c | 2660 | add_com_alias ("bt", "backtrace", class_stack, 0); |
c906108c SS |
2661 | |
2662 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2663 | add_info ("stack", backtrace_command, | |
1bedd215 | 2664 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2665 | add_info_alias ("s", "stack", 1); |
2666 | add_info ("frame", frame_info, | |
1bedd215 | 2667 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2668 | add_info_alias ("f", "frame", 1); |
2669 | add_info ("locals", locals_info, | |
1bedd215 | 2670 | _("Local variables of current stack frame.")); |
c906108c | 2671 | add_info ("args", args_info, |
1bedd215 | 2672 | _("Argument variables of current stack frame.")); |
c906108c SS |
2673 | |
2674 | if (dbx_commands) | |
1bedd215 AC |
2675 | add_com ("func", class_stack, func_command, _("\ |
2676 | Select the stack frame that contains <func>.\n\ | |
2677 | Usage: func <name>\n")); | |
c906108c | 2678 | |
88408340 JB |
2679 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2680 | print_frame_arguments_choices, &print_frame_arguments, | |
2681 | _("Set printing of non-scalar frame arguments"), | |
2682 | _("Show printing of non-scalar frame arguments"), | |
2683 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2684 | ||
e7045703 DE |
2685 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2686 | &print_raw_frame_arguments, _("\ | |
2687 | Set whether to print frame arguments in raw form."), _("\ | |
2688 | Show whether to print frame arguments in raw form."), _("\ | |
2689 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2690 | pretty-printers for that value."), | |
2691 | NULL, NULL, | |
2692 | &setprintrawlist, &showprintrawlist); | |
2693 | ||
30c33a9f HZ |
2694 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2695 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2696 | Set whether to disassemble next source line or insn when execution stops."), |
2697 | _("\ | |
2698 | Show whether to disassemble next source line or insn when execution stops."), | |
2699 | _("\ | |
80a0ea0f EZ |
2700 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2701 | to displaying the source line itself. If the next source line cannot\n\ | |
2702 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2703 | will display disassembly of next instruction instead of showing the\n\ | |
2704 | source line.\n\ | |
2705 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2706 | cannot be displayed.\n\ | |
2707 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2708 | source line."), | |
30c33a9f HZ |
2709 | NULL, |
2710 | show_disassemble_next_line, | |
2711 | &setlist, &showlist); | |
a362e3d3 | 2712 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2713 | |
2714 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2715 | print_entry_values_choices, &print_entry_values, | |
2716 | _("Set printing of function arguments at function " | |
2717 | "entry"), | |
2718 | _("Show printing of function arguments at function " | |
2719 | "entry"), | |
2720 | _("\ | |
2721 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2722 | in addition to their current values. This option tells GDB whether\n\ | |
2723 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2724 | or both. Note that one or both of these values may be <optimized out>."), | |
2725 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2726 | } |