Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 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 | |
8d3fea16 | 51 | #include "safe-ctype.h" |
ccefe4c4 | 52 | #include "symfile.h" |
6dddc817 | 53 | #include "extension.h" |
76727919 | 54 | #include "observable.h" |
0b868b60 | 55 | #include "common/def-vector.h" |
ccefe4c4 | 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) | |
00431a78 | 137 | gdb_assert (inline_skipped_frames (inferior_thread ()) > 0); |
edb3359d DJ |
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 | ||
4034d0ff AT |
146 | /* See frame.h. */ |
147 | ||
148 | void | |
149 | print_stack_frame_to_uiout (struct ui_out *uiout, struct frame_info *frame, | |
150 | int print_level, enum print_what print_what, | |
151 | int set_current_sal) | |
152 | { | |
67ad9399 | 153 | scoped_restore save_uiout = make_scoped_restore (¤t_uiout, uiout); |
4034d0ff AT |
154 | |
155 | print_stack_frame (frame, print_level, print_what, set_current_sal); | |
4034d0ff AT |
156 | } |
157 | ||
f9acce4a | 158 | /* Show or print a stack frame FRAME briefly. The output is formatted |
d762c46a AC |
159 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
160 | relative level, function name, argument list, and file name and | |
161 | line number. If the frame's PC is not at the beginning of the | |
162 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
163 | |
164 | void | |
033a42c2 | 165 | print_stack_frame (struct frame_info *frame, int print_level, |
08d72866 PA |
166 | enum print_what print_what, |
167 | int set_current_sal) | |
c906108c | 168 | { |
c906108c | 169 | |
aaf9e9fd | 170 | /* For mi, alway print location and address. */ |
112e8700 | 171 | if (current_uiout->is_mi_like_p ()) |
311b5970 | 172 | print_what = LOC_AND_ADDRESS; |
c906108c | 173 | |
492d29ea | 174 | TRY |
311b5970 | 175 | { |
08d72866 PA |
176 | print_frame_info (frame, print_level, print_what, 1 /* print_args */, |
177 | set_current_sal); | |
178 | if (set_current_sal) | |
5166082f | 179 | set_current_sal_from_frame (frame); |
311b5970 | 180 | } |
492d29ea PA |
181 | CATCH (e, RETURN_MASK_ERROR) |
182 | { | |
183 | } | |
184 | END_CATCH | |
311b5970 | 185 | } |
c906108c | 186 | |
033a42c2 MK |
187 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
188 | the offset of the first nameless argument, and NUM is the number of | |
189 | nameless arguments to print. FIRST is nonzero if this is the first | |
190 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
191 | |
192 | static void | |
033a42c2 | 193 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
194 | int first, struct ui_file *stream) |
195 | { | |
e17a4113 UW |
196 | struct gdbarch *gdbarch = get_frame_arch (frame); |
197 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
198 | int i; |
199 | CORE_ADDR argsaddr; | |
200 | long arg_value; | |
201 | ||
202 | for (i = 0; i < num; i++) | |
203 | { | |
204 | QUIT; | |
033a42c2 | 205 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
206 | if (!argsaddr) |
207 | return; | |
e17a4113 UW |
208 | arg_value = read_memory_integer (argsaddr + start, |
209 | sizeof (int), byte_order); | |
8d3b0994 AC |
210 | if (!first) |
211 | fprintf_filtered (stream, ", "); | |
212 | fprintf_filtered (stream, "%ld", arg_value); | |
213 | first = 0; | |
214 | start += sizeof (int); | |
215 | } | |
216 | } | |
217 | ||
93d86cef JK |
218 | /* Print single argument of inferior function. ARG must be already |
219 | read in. | |
220 | ||
221 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
222 | iff it should not be printed accoring to user settings. */ | |
223 | ||
224 | static void | |
225 | print_frame_arg (const struct frame_arg *arg) | |
226 | { | |
227 | struct ui_out *uiout = current_uiout; | |
492d29ea | 228 | const char *error_message = NULL; |
93d86cef | 229 | |
d7e74731 | 230 | string_file stb; |
93d86cef JK |
231 | |
232 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
233 | gdb_assert (arg->entry_kind == print_entry_values_no |
234 | || arg->entry_kind == print_entry_values_only | |
112e8700 | 235 | || (!uiout->is_mi_like_p () |
e18b2753 | 236 | && arg->entry_kind == print_entry_values_compact)); |
93d86cef | 237 | |
46b9c129 TT |
238 | annotate_arg_emitter arg_emitter; |
239 | ui_out_emit_tuple tuple_emitter (uiout, NULL); | |
d7e74731 | 240 | fprintf_symbol_filtered (&stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 241 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
242 | if (arg->entry_kind == print_entry_values_compact) |
243 | { | |
244 | /* It is OK to provide invalid MI-like stream as with | |
245 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
d7e74731 | 246 | stb.puts ("="); |
e18b2753 | 247 | |
d7e74731 | 248 | fprintf_symbol_filtered (&stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
249 | SYMBOL_LANGUAGE (arg->sym), |
250 | DMGL_PARAMS | DMGL_ANSI); | |
251 | } | |
252 | if (arg->entry_kind == print_entry_values_only | |
253 | || arg->entry_kind == print_entry_values_compact) | |
d7e74731 | 254 | stb.puts ("@entry"); |
112e8700 | 255 | uiout->field_stream ("name", stb); |
93d86cef | 256 | annotate_arg_name_end (); |
112e8700 | 257 | uiout->text ("="); |
93d86cef JK |
258 | |
259 | if (!arg->val && !arg->error) | |
112e8700 | 260 | uiout->text ("..."); |
93d86cef JK |
261 | else |
262 | { | |
263 | if (arg->error) | |
492d29ea | 264 | error_message = arg->error; |
93d86cef JK |
265 | else |
266 | { | |
492d29ea | 267 | TRY |
93d86cef JK |
268 | { |
269 | const struct language_defn *language; | |
270 | struct value_print_options opts; | |
271 | ||
272 | /* Avoid value_print because it will deref ref parameters. We | |
273 | just want to print their addresses. Print ??? for args whose | |
274 | address we do not know. We pass 2 as "recurse" to val_print | |
275 | because our standard indentation here is 4 spaces, and | |
276 | val_print indents 2 for each recurse. */ | |
277 | ||
278 | annotate_arg_value (value_type (arg->val)); | |
279 | ||
280 | /* Use the appropriate language to display our symbol, unless the | |
281 | user forced the language to a specific language. */ | |
282 | if (language_mode == language_mode_auto) | |
283 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
284 | else | |
285 | language = current_language; | |
286 | ||
2a998fc0 | 287 | get_no_prettyformat_print_options (&opts); |
3343315b | 288 | opts.deref_ref = 1; |
e7045703 | 289 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
290 | |
291 | /* True in "summary" mode, false otherwise. */ | |
292 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
293 | ||
d7e74731 | 294 | common_val_print (arg->val, &stb, 2, &opts, language); |
93d86cef | 295 | } |
492d29ea PA |
296 | CATCH (except, RETURN_MASK_ERROR) |
297 | { | |
298 | error_message = except.message; | |
299 | } | |
300 | END_CATCH | |
93d86cef | 301 | } |
492d29ea | 302 | if (error_message != NULL) |
d7e74731 | 303 | stb.printf (_("<error reading variable: %s>"), error_message); |
93d86cef JK |
304 | } |
305 | ||
112e8700 | 306 | uiout->field_stream ("value", stb); |
93d86cef JK |
307 | } |
308 | ||
82a0a75f YQ |
309 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
310 | responsible for xfree of ARGP->ERROR. This function never throws an | |
311 | exception. */ | |
312 | ||
313 | void | |
314 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
315 | struct frame_arg *argp) | |
316 | { | |
492d29ea PA |
317 | argp->sym = sym; |
318 | argp->val = NULL; | |
319 | argp->error = NULL; | |
320 | ||
321 | TRY | |
82a0a75f | 322 | { |
63e43d3a | 323 | argp->val = read_var_value (sym, NULL, 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 | 348 | { |
63e43d3a | 349 | val = read_var_value (sym, NULL, frame); |
e18b2753 | 350 | } |
492d29ea | 351 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 352 | { |
224c3ddb | 353 | val_error = (char *) alloca (strlen (except.message) + 1); |
e18b2753 JK |
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 | ||
112e8700 | 390 | if (val && entryval && !current_uiout->is_mi_like_p ()) |
e18b2753 | 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 | 403 | |
216f72a1 | 404 | /* DW_AT_call_value does match with the current |
a471c594 | 405 | value. If it is a reference still try to verify if |
216f72a1 | 406 | dereferenced DW_AT_call_data_value does not differ. */ |
a471c594 | 407 | |
492d29ea | 408 | TRY |
a471c594 | 409 | { |
744a8059 | 410 | struct type *type_deref; |
a471c594 JK |
411 | |
412 | val_deref = coerce_ref (val); | |
413 | if (value_lazy (val_deref)) | |
414 | value_fetch_lazy (val_deref); | |
744a8059 | 415 | type_deref = value_type (val_deref); |
a471c594 JK |
416 | |
417 | entryval_deref = coerce_ref (entryval); | |
418 | if (value_lazy (entryval_deref)) | |
419 | value_fetch_lazy (entryval_deref); | |
420 | ||
421 | /* If the reference addresses match but dereferenced | |
422 | content does not match print them. */ | |
423 | if (val != val_deref | |
9a0dc9e3 PA |
424 | && value_contents_eq (val_deref, 0, |
425 | entryval_deref, 0, | |
426 | TYPE_LENGTH (type_deref))) | |
a471c594 JK |
427 | val_equal = 1; |
428 | } | |
492d29ea PA |
429 | CATCH (except, RETURN_MASK_ERROR) |
430 | { | |
431 | /* If the dereferenced content could not be | |
432 | fetched do not display anything. */ | |
433 | if (except.error == NO_ENTRY_VALUE_ERROR) | |
434 | val_equal = 1; | |
435 | else if (except.message != NULL) | |
436 | { | |
437 | entryval_error = (char *) alloca (strlen (except.message) + 1); | |
438 | strcpy (entryval_error, except.message); | |
439 | } | |
440 | } | |
441 | END_CATCH | |
a471c594 JK |
442 | |
443 | /* Value was not a reference; and its content matches. */ | |
444 | if (val == val_deref) | |
445 | val_equal = 1; | |
a471c594 JK |
446 | |
447 | if (val_equal) | |
448 | entryval = NULL; | |
e18b2753 JK |
449 | } |
450 | } | |
451 | ||
452 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
453 | in MI mode. */ | |
454 | ||
455 | if (val_error && entryval_error | |
456 | && strcmp (val_error, entryval_error) == 0) | |
457 | { | |
458 | entryval_error = NULL; | |
459 | ||
460 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
461 | the entry value even if no entry values are present in the | |
462 | inferior. */ | |
463 | } | |
464 | } | |
465 | } | |
466 | ||
467 | if (entryval == NULL) | |
93d86cef | 468 | { |
e18b2753 JK |
469 | if (print_entry_values == print_entry_values_preferred) |
470 | { | |
492d29ea PA |
471 | gdb_assert (val == NULL); |
472 | ||
473 | TRY | |
e18b2753 | 474 | { |
63e43d3a | 475 | val = read_var_value (sym, NULL, frame); |
e18b2753 | 476 | } |
492d29ea | 477 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 478 | { |
224c3ddb | 479 | val_error = (char *) alloca (strlen (except.message) + 1); |
e18b2753 JK |
480 | strcpy (val_error, except.message); |
481 | } | |
492d29ea | 482 | END_CATCH |
e18b2753 JK |
483 | } |
484 | if (print_entry_values == print_entry_values_only | |
485 | || print_entry_values == print_entry_values_both | |
486 | || (print_entry_values == print_entry_values_preferred | |
487 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
488 | { |
489 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
490 | entryval_error = NULL; | |
491 | } | |
93d86cef | 492 | } |
e18b2753 JK |
493 | if ((print_entry_values == print_entry_values_compact |
494 | || print_entry_values == print_entry_values_if_needed | |
495 | || print_entry_values == print_entry_values_preferred) | |
496 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 497 | { |
e18b2753 JK |
498 | val = NULL; |
499 | val_error = NULL; | |
93d86cef JK |
500 | } |
501 | ||
502 | argp->sym = sym; | |
503 | argp->val = val; | |
504 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
505 | if (!val && !val_error) |
506 | argp->entry_kind = print_entry_values_only; | |
507 | else if ((print_entry_values == print_entry_values_compact | |
508 | || print_entry_values == print_entry_values_default) && val_equal) | |
509 | { | |
510 | argp->entry_kind = print_entry_values_compact; | |
112e8700 | 511 | gdb_assert (!current_uiout->is_mi_like_p ()); |
e18b2753 JK |
512 | } |
513 | else | |
514 | argp->entry_kind = print_entry_values_no; | |
515 | ||
516 | entryargp->sym = sym; | |
517 | entryargp->val = entryval; | |
518 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
519 | if (!entryval && !entryval_error) | |
520 | entryargp->entry_kind = print_entry_values_no; | |
521 | else | |
522 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
523 | } |
524 | ||
033a42c2 MK |
525 | /* Print the arguments of frame FRAME on STREAM, given the function |
526 | FUNC running in that frame (as a symbol), where NUM is the number | |
527 | of arguments according to the stack frame (or -1 if the number of | |
528 | arguments is unknown). */ | |
8d3b0994 | 529 | |
e3168615 | 530 | /* Note that currently the "number of arguments according to the |
033a42c2 | 531 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 532 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
533 | |
534 | static void | |
033a42c2 MK |
535 | print_frame_args (struct symbol *func, struct frame_info *frame, |
536 | int num, struct ui_file *stream) | |
8d3b0994 | 537 | { |
79a45e25 | 538 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 539 | int first = 1; |
8d3b0994 | 540 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
541 | at the highest offset, or -1 if we haven't come to a stack |
542 | argument yet. */ | |
8d3b0994 | 543 | long highest_offset = -1; |
8d3b0994 AC |
544 | /* Number of ints of arguments that we have printed so far. */ |
545 | int args_printed = 0; | |
a6bac58e TT |
546 | /* True if we should print arguments, false otherwise. */ |
547 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 548 | |
8d3b0994 AC |
549 | if (func) |
550 | { | |
3977b71f | 551 | const struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 552 | struct block_iterator iter; |
033a42c2 | 553 | struct symbol *sym; |
8d3b0994 | 554 | |
de4f826b | 555 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 556 | { |
e18b2753 | 557 | struct frame_arg arg, entryarg; |
93d86cef | 558 | |
8d3b0994 AC |
559 | QUIT; |
560 | ||
561 | /* Keep track of the highest stack argument offset seen, and | |
562 | skip over any kinds of symbols we don't care about. */ | |
563 | ||
2a2d4dc3 AS |
564 | if (!SYMBOL_IS_ARGUMENT (sym)) |
565 | continue; | |
566 | ||
8d3b0994 AC |
567 | switch (SYMBOL_CLASS (sym)) |
568 | { | |
569 | case LOC_ARG: | |
570 | case LOC_REF_ARG: | |
571 | { | |
572 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 573 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
574 | |
575 | /* Compute address of next argument by adding the size of | |
576 | this argument and rounding to an int boundary. */ | |
577 | current_offset = | |
578 | ((current_offset + arg_size + sizeof (int) - 1) | |
579 | & ~(sizeof (int) - 1)); | |
580 | ||
033a42c2 MK |
581 | /* If this is the highest offset seen yet, set |
582 | highest_offset. */ | |
8d3b0994 AC |
583 | if (highest_offset == -1 |
584 | || (current_offset > highest_offset)) | |
585 | highest_offset = current_offset; | |
586 | ||
033a42c2 MK |
587 | /* Add the number of ints we're about to print to |
588 | args_printed. */ | |
8d3b0994 AC |
589 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
590 | } | |
591 | ||
033a42c2 MK |
592 | /* We care about types of symbols, but don't need to |
593 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 594 | case LOC_REGISTER: |
8d3b0994 | 595 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
596 | case LOC_COMPUTED: |
597 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 598 | default: |
2a2d4dc3 | 599 | break; |
8d3b0994 AC |
600 | } |
601 | ||
602 | /* We have to look up the symbol because arguments can have | |
603 | two entries (one a parameter, one a local) and the one we | |
604 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 605 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
606 | small structure and gcc2 when the argument type is float |
607 | and it is passed as a double and converted to float by | |
608 | the prologue (in the latter case the type of the LOC_ARG | |
609 | symbol is double and the type of the LOC_LOCAL symbol is | |
610 | float). */ | |
033a42c2 MK |
611 | /* But if the parameter name is null, don't try it. Null |
612 | parameter names occur on the RS/6000, for traceback | |
613 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 614 | |
3567439c | 615 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
616 | { |
617 | struct symbol *nsym; | |
433759f7 | 618 | |
de63c46b PA |
619 | nsym = lookup_symbol_search_name (SYMBOL_SEARCH_NAME (sym), |
620 | b, VAR_DOMAIN).symbol; | |
55765a25 | 621 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
622 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
623 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 624 | { |
033a42c2 MK |
625 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
626 | that it was passed on the stack and loaded into a | |
627 | register, or passed in a register and stored in a | |
628 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
629 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
630 | |
631 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
632 | |
633 | (1) Because find_saved_registers may be slow for | |
634 | remote debugging. | |
635 | ||
636 | (2) Because registers are often re-used and stack | |
637 | slots rarely (never?) are. Therefore using | |
638 | the stack slot is much less likely to print | |
639 | garbage. | |
8d3b0994 AC |
640 | |
641 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
642 | |
643 | (1) So that the backtrace prints the same value | |
644 | as "print foo". I see no compelling reason | |
645 | why this needs to be the case; having the | |
646 | backtrace print the value which was passed | |
647 | in, and "print foo" print the value as | |
648 | modified within the called function, makes | |
649 | perfect sense to me. | |
650 | ||
651 | Additional note: It might be nice if "info args" | |
652 | displayed both values. | |
653 | ||
654 | One more note: There is a case with SPARC | |
655 | structure passing where we need to use the | |
656 | LOC_REGISTER, but this is dealt with by creating | |
657 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
658 | |
659 | /* Leave sym (the LOC_ARG) alone. */ | |
660 | ; | |
661 | } | |
662 | else | |
663 | sym = nsym; | |
664 | } | |
665 | ||
666 | /* Print the current arg. */ | |
667 | if (!first) | |
112e8700 SM |
668 | uiout->text (", "); |
669 | uiout->wrap_hint (" "); | |
8d3b0994 | 670 | |
93d86cef JK |
671 | if (!print_args) |
672 | { | |
673 | memset (&arg, 0, sizeof (arg)); | |
674 | arg.sym = sym; | |
e18b2753 JK |
675 | arg.entry_kind = print_entry_values_no; |
676 | memset (&entryarg, 0, sizeof (entryarg)); | |
677 | entryarg.sym = sym; | |
678 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
679 | } |
680 | else | |
e18b2753 | 681 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 682 | |
e18b2753 JK |
683 | if (arg.entry_kind != print_entry_values_only) |
684 | print_frame_arg (&arg); | |
685 | ||
686 | if (entryarg.entry_kind != print_entry_values_no) | |
687 | { | |
688 | if (arg.entry_kind != print_entry_values_only) | |
689 | { | |
112e8700 SM |
690 | uiout->text (", "); |
691 | uiout->wrap_hint (" "); | |
e18b2753 JK |
692 | } |
693 | ||
694 | print_frame_arg (&entryarg); | |
695 | } | |
8d3b0994 | 696 | |
93d86cef | 697 | xfree (arg.error); |
e18b2753 | 698 | xfree (entryarg.error); |
8d3b0994 AC |
699 | |
700 | first = 0; | |
701 | } | |
702 | } | |
703 | ||
704 | /* Don't print nameless args in situations where we don't know | |
705 | enough about the stack to find them. */ | |
706 | if (num != -1) | |
707 | { | |
708 | long start; | |
709 | ||
710 | if (highest_offset == -1) | |
7500260a | 711 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
712 | else |
713 | start = highest_offset; | |
714 | ||
033a42c2 | 715 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
716 | first, stream); |
717 | } | |
8d3b0994 AC |
718 | } |
719 | ||
033a42c2 MK |
720 | /* Set the current source and line to the location given by frame |
721 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
722 | line is in the center of the next 'list'. */ | |
c789492a | 723 | |
7abfe014 | 724 | void |
5166082f | 725 | set_current_sal_from_frame (struct frame_info *frame) |
c789492a | 726 | { |
51abb421 | 727 | symtab_and_line sal = find_frame_sal (frame); |
5166082f | 728 | if (sal.symtab != NULL) |
51abb421 | 729 | set_current_source_symtab_and_line (sal); |
c789492a FL |
730 | } |
731 | ||
30c33a9f HZ |
732 | /* If ON, GDB will display disassembly of the next source line when |
733 | execution of the program being debugged stops. | |
481df73e HZ |
734 | If AUTO (which is the default), or there's no line info to determine |
735 | the source line of the next instruction, display disassembly of next | |
736 | instruction instead. */ | |
30c33a9f HZ |
737 | |
738 | static enum auto_boolean disassemble_next_line; | |
739 | ||
740 | static void | |
741 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
742 | struct cmd_list_element *c, | |
743 | const char *value) | |
744 | { | |
3e43a32a MS |
745 | fprintf_filtered (file, |
746 | _("Debugger's willingness to use " | |
747 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
748 | value); |
749 | } | |
750 | ||
30c33a9f HZ |
751 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
752 | because it will be broken by filter sometime. */ | |
753 | ||
754 | static void | |
13274fc3 UW |
755 | do_gdb_disassembly (struct gdbarch *gdbarch, |
756 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f | 757 | { |
30c33a9f | 758 | |
492d29ea | 759 | TRY |
30c33a9f | 760 | { |
7a8eb317 | 761 | gdb_disassembly (gdbarch, current_uiout, |
79a45e25 PA |
762 | DISASSEMBLY_RAW_INSN, how_many, |
763 | low, high); | |
30c33a9f | 764 | } |
492d29ea | 765 | CATCH (exception, RETURN_MASK_ERROR) |
b1d288d3 JK |
766 | { |
767 | /* If an exception was thrown while doing the disassembly, print | |
768 | the error message, to give the user a clue of what happened. */ | |
769 | exception_print (gdb_stderr, exception); | |
770 | } | |
492d29ea | 771 | END_CATCH |
30c33a9f HZ |
772 | } |
773 | ||
033a42c2 | 774 | /* Print information about frame FRAME. The output is format according |
65aa373f | 775 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
776 | PRINT_WHAT is: |
777 | ||
778 | SRC_LINE: Print only source line. | |
779 | LOCATION: Print only location. | |
50c65c2d | 780 | SRC_AND_LOC: Print location and source line. |
033a42c2 MK |
781 | |
782 | Used in "where" output, and to emit breakpoint or step | |
783 | messages. */ | |
c906108c | 784 | |
7789c6f5 | 785 | void |
033a42c2 | 786 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
787 | enum print_what print_what, int print_args, |
788 | int set_current_sal) | |
c906108c | 789 | { |
5af949e3 | 790 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c5394b80 JM |
791 | int source_print; |
792 | int location_print; | |
79a45e25 | 793 | struct ui_out *uiout = current_uiout; |
c906108c | 794 | |
033a42c2 | 795 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
796 | || get_frame_type (frame) == SIGTRAMP_FRAME |
797 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 798 | { |
2e783024 | 799 | ui_out_emit_tuple tuple_emitter (uiout, "frame"); |
c906108c | 800 | |
033a42c2 | 801 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 802 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 803 | |
c906108c | 804 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 805 | to list for this frame. */ |
0faf0076 | 806 | if (print_level) |
52c6a6ac | 807 | { |
112e8700 SM |
808 | uiout->text ("#"); |
809 | uiout->field_fmt_int (2, ui_left, "level", | |
033a42c2 | 810 | frame_relative_level (frame)); |
52c6a6ac | 811 | } |
112e8700 | 812 | if (uiout->is_mi_like_p ()) |
52c6a6ac | 813 | { |
075559bc | 814 | annotate_frame_address (); |
112e8700 | 815 | uiout->field_core_addr ("addr", |
5af949e3 | 816 | gdbarch, get_frame_pc (frame)); |
075559bc | 817 | annotate_frame_address_end (); |
52c6a6ac | 818 | } |
6a3fe0a4 | 819 | |
033a42c2 | 820 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
821 | { |
822 | annotate_function_call (); | |
112e8700 | 823 | uiout->field_string ("func", "<function called from gdb>"); |
075559bc | 824 | } |
033a42c2 | 825 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
826 | { |
827 | annotate_signal_handler_caller (); | |
112e8700 | 828 | uiout->field_string ("func", "<signal handler called>"); |
075559bc | 829 | } |
36f15f55 UW |
830 | else if (get_frame_type (frame) == ARCH_FRAME) |
831 | { | |
112e8700 | 832 | uiout->field_string ("func", "<cross-architecture call>"); |
36f15f55 | 833 | } |
112e8700 | 834 | uiout->text ("\n"); |
c906108c | 835 | annotate_frame_end (); |
075559bc | 836 | |
433e77fa HZ |
837 | /* If disassemble-next-line is set to auto or on output the next |
838 | instruction. */ | |
839 | if (disassemble_next_line == AUTO_BOOLEAN_AUTO | |
840 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
841 | do_gdb_disassembly (get_frame_arch (frame), 1, | |
842 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
843 | ||
c906108c SS |
844 | return; |
845 | } | |
846 | ||
033a42c2 MK |
847 | /* If FRAME is not the innermost frame, that normally means that |
848 | FRAME->pc points to *after* the call instruction, and we want to | |
849 | get the line containing the call, never the next line. But if | |
850 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
851 | next frame was not entered as the result of a call, and we want | |
852 | to get the line containing FRAME->pc. */ | |
51abb421 | 853 | symtab_and_line sal = find_frame_sal (frame); |
c906108c | 854 | |
0faf0076 AC |
855 | location_print = (print_what == LOCATION |
856 | || print_what == LOC_AND_ADDRESS | |
857 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
858 | |
859 | if (location_print || !sal.symtab) | |
033a42c2 | 860 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 861 | |
0faf0076 | 862 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 863 | |
30c33a9f HZ |
864 | /* If disassemble-next-line is set to auto or on and doesn't have |
865 | the line debug messages for $pc, output the next instruction. */ | |
866 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
867 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
868 | && source_print && !sal.symtab) | |
13274fc3 UW |
869 | do_gdb_disassembly (get_frame_arch (frame), 1, |
870 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 871 | |
c5394b80 JM |
872 | if (source_print && sal.symtab) |
873 | { | |
874 | int done = 0; | |
0faf0076 | 875 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 876 | && frame_show_address (frame, sal)); |
c5394b80 JM |
877 | |
878 | if (annotation_level) | |
879 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 880 | get_frame_pc (frame)); |
c5394b80 JM |
881 | if (!done) |
882 | { | |
9a4105ab | 883 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
884 | deprecated_print_frame_info_listing_hook (sal.symtab, |
885 | sal.line, | |
886 | sal.line + 1, 0); | |
ba4bbdcb | 887 | else |
c5394b80 | 888 | { |
79a45b7d | 889 | struct value_print_options opts; |
433759f7 | 890 | |
79a45b7d | 891 | get_user_print_options (&opts); |
ba4bbdcb | 892 | /* We used to do this earlier, but that is clearly |
c378eb4e | 893 | wrong. This function is used by many different |
ba4bbdcb KS |
894 | parts of gdb, including normal_stop in infrun.c, |
895 | which uses this to print out the current PC | |
896 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
897 | line. Only the command line really wants this |
898 | behavior. Other UIs probably would like the | |
cbd3c883 | 899 | ability to decide for themselves if it is desired. */ |
79a45b7d | 900 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 901 | { |
112e8700 | 902 | uiout->field_core_addr ("addr", |
5af949e3 | 903 | gdbarch, get_frame_pc (frame)); |
112e8700 | 904 | uiout->text ("\t"); |
ba4bbdcb KS |
905 | } |
906 | ||
907 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 908 | } |
c5394b80 | 909 | } |
30c33a9f HZ |
910 | |
911 | /* If disassemble-next-line is set to on and there is line debug | |
912 | messages, output assembly codes for next line. */ | |
913 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 914 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
915 | } |
916 | ||
08d72866 | 917 | if (set_current_sal) |
e3eebbd7 PA |
918 | { |
919 | CORE_ADDR pc; | |
920 | ||
921 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 922 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 923 | else |
1bfeeb0f | 924 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 925 | } |
c5394b80 JM |
926 | |
927 | annotate_frame_end (); | |
928 | ||
929 | gdb_flush (gdb_stdout); | |
930 | } | |
931 | ||
1bfeeb0f JL |
932 | /* Remember the last symtab and line we displayed, which we use e.g. |
933 | * as the place to put a breakpoint when the `break' command is | |
934 | * invoked with no arguments. */ | |
935 | ||
936 | static void | |
937 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
938 | CORE_ADDR addr, struct symtab *symtab, | |
939 | int line) | |
940 | { | |
941 | last_displayed_sal_valid = valid; | |
942 | last_displayed_pspace = pspace; | |
943 | last_displayed_addr = addr; | |
944 | last_displayed_symtab = symtab; | |
945 | last_displayed_line = line; | |
4cb6da1c AR |
946 | if (valid && pspace == NULL) |
947 | { | |
4cb6da1c | 948 | clear_last_displayed_sal (); |
e36930bb PA |
949 | internal_error (__FILE__, __LINE__, |
950 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 951 | } |
1bfeeb0f JL |
952 | } |
953 | ||
954 | /* Forget the last sal we displayed. */ | |
955 | ||
956 | void | |
957 | clear_last_displayed_sal (void) | |
958 | { | |
959 | last_displayed_sal_valid = 0; | |
960 | last_displayed_pspace = 0; | |
961 | last_displayed_addr = 0; | |
962 | last_displayed_symtab = 0; | |
963 | last_displayed_line = 0; | |
964 | } | |
965 | ||
966 | /* Is our record of the last sal we displayed valid? If not, | |
967 | * the get_last_displayed_* functions will return NULL or 0, as | |
968 | * appropriate. */ | |
969 | ||
970 | int | |
971 | last_displayed_sal_is_valid (void) | |
972 | { | |
973 | return last_displayed_sal_valid; | |
974 | } | |
975 | ||
976 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
977 | ||
978 | struct program_space * | |
979 | get_last_displayed_pspace (void) | |
980 | { | |
981 | if (last_displayed_sal_valid) | |
982 | return last_displayed_pspace; | |
983 | return 0; | |
984 | } | |
985 | ||
986 | /* Get the address of the last sal we displayed, if it's valid. */ | |
987 | ||
988 | CORE_ADDR | |
989 | get_last_displayed_addr (void) | |
990 | { | |
991 | if (last_displayed_sal_valid) | |
992 | return last_displayed_addr; | |
993 | return 0; | |
994 | } | |
995 | ||
996 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
997 | ||
998 | struct symtab* | |
999 | get_last_displayed_symtab (void) | |
1000 | { | |
1001 | if (last_displayed_sal_valid) | |
1002 | return last_displayed_symtab; | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1007 | ||
1008 | int | |
1009 | get_last_displayed_line (void) | |
1010 | { | |
1011 | if (last_displayed_sal_valid) | |
1012 | return last_displayed_line; | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | /* Get the last sal we displayed, if it's valid. */ | |
1017 | ||
51abb421 PA |
1018 | symtab_and_line |
1019 | get_last_displayed_sal () | |
1bfeeb0f | 1020 | { |
51abb421 PA |
1021 | symtab_and_line sal; |
1022 | ||
1bfeeb0f JL |
1023 | if (last_displayed_sal_valid) |
1024 | { | |
51abb421 PA |
1025 | sal.pspace = last_displayed_pspace; |
1026 | sal.pc = last_displayed_addr; | |
1027 | sal.symtab = last_displayed_symtab; | |
1028 | sal.line = last_displayed_line; | |
1bfeeb0f | 1029 | } |
51abb421 PA |
1030 | |
1031 | return sal; | |
1bfeeb0f JL |
1032 | } |
1033 | ||
1034 | ||
c6dc63a1 TT |
1035 | /* Attempt to obtain the name, FUNLANG and optionally FUNCP of the function |
1036 | corresponding to FRAME. */ | |
e9e07ba6 | 1037 | |
c6dc63a1 TT |
1038 | gdb::unique_xmalloc_ptr<char> |
1039 | find_frame_funname (struct frame_info *frame, enum language *funlang, | |
1040 | struct symbol **funcp) | |
c5394b80 JM |
1041 | { |
1042 | struct symbol *func; | |
c6dc63a1 | 1043 | gdb::unique_xmalloc_ptr<char> funname; |
8b93c638 | 1044 | |
f8f6f20b | 1045 | *funlang = language_unknown; |
e9e07ba6 JK |
1046 | if (funcp) |
1047 | *funcp = NULL; | |
c5394b80 | 1048 | |
edb3359d | 1049 | func = get_frame_function (frame); |
c906108c SS |
1050 | if (func) |
1051 | { | |
1052 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1053 | function (when we are in the first function in a file which |
1054 | is compiled without debugging symbols, the previous function | |
1055 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1056 | that is supposed to tell us where the file with debugging |
1057 | symbols ends has been truncated by ar because it is longer | |
1058 | than 15 characters). This also occurs if the user uses asm() | |
1059 | to create a function but not stabs for it (in a file compiled | |
1060 | with -g). | |
c5aa993b JM |
1061 | |
1062 | So look in the minimal symbol tables as well, and if it comes | |
1063 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1064 | I don't think this can ever cause any problems; there |
1065 | shouldn't be any minimal symbols in the middle of a function; | |
1066 | if this is ever changed many parts of GDB will need to be | |
1067 | changed (and we'll create a find_pc_minimal_function or some | |
1068 | such). */ | |
1069 | ||
7cbd4a93 | 1070 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1071 | |
1072 | /* Don't attempt to do this for inlined functions, which do not | |
1073 | have a corresponding minimal symbol. */ | |
1074 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1075 | msymbol | |
1076 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1077 | else |
1078 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1079 | |
7cbd4a93 | 1080 | if (msymbol.minsym != NULL |
77e371c0 | 1081 | && (BMSYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1082 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1083 | { | |
c906108c SS |
1084 | /* We also don't know anything about the function besides |
1085 | its address and name. */ | |
1086 | func = 0; | |
c6dc63a1 | 1087 | funname.reset (xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym))); |
efd66ac6 | 1088 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1089 | } |
1090 | else | |
1091 | { | |
d10153cf TT |
1092 | const char *print_name = SYMBOL_PRINT_NAME (func); |
1093 | ||
f8f6f20b | 1094 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1095 | if (funcp) |
1096 | *funcp = func; | |
f8f6f20b | 1097 | if (*funlang == language_cplus) |
c5aa993b | 1098 | { |
033a42c2 MK |
1099 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1100 | to display the demangled name that we already have | |
1101 | stored in the symbol table, but we stored a version | |
1102 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1103 | display parameters. So remove the parameters. */ |
109483d9 | 1104 | funname = cp_remove_params (print_name); |
c5aa993b | 1105 | } |
d10153cf | 1106 | |
c6dc63a1 TT |
1107 | /* If we didn't hit the C++ case above, set *funname |
1108 | here. */ | |
1109 | if (funname == NULL) | |
1110 | funname.reset (xstrdup (print_name)); | |
c906108c SS |
1111 | } |
1112 | } | |
1113 | else | |
1114 | { | |
7cbd4a93 | 1115 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1116 | CORE_ADDR pc; |
033a42c2 | 1117 | |
e3eebbd7 | 1118 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
c6dc63a1 | 1119 | return funname; |
e3eebbd7 PA |
1120 | |
1121 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1122 | if (msymbol.minsym != NULL) |
c906108c | 1123 | { |
c6dc63a1 | 1124 | funname.reset (xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym))); |
efd66ac6 | 1125 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); |
c906108c SS |
1126 | } |
1127 | } | |
c6dc63a1 TT |
1128 | |
1129 | return funname; | |
f8f6f20b TJB |
1130 | } |
1131 | ||
1132 | static void | |
1133 | print_frame (struct frame_info *frame, int print_level, | |
1134 | enum print_what print_what, int print_args, | |
1135 | struct symtab_and_line sal) | |
1136 | { | |
5af949e3 | 1137 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1138 | struct ui_out *uiout = current_uiout; |
f8f6f20b | 1139 | enum language funlang = language_unknown; |
f8f6f20b | 1140 | struct value_print_options opts; |
e9e07ba6 | 1141 | struct symbol *func; |
e3eebbd7 PA |
1142 | CORE_ADDR pc = 0; |
1143 | int pc_p; | |
1144 | ||
1145 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1146 | |
c6dc63a1 TT |
1147 | gdb::unique_xmalloc_ptr<char> funname |
1148 | = find_frame_funname (frame, &funlang, &func); | |
c906108c | 1149 | |
033a42c2 | 1150 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1151 | gdbarch, pc); |
c5394b80 | 1152 | |
76f9c9cf TT |
1153 | { |
1154 | ui_out_emit_tuple tuple_emitter (uiout, "frame"); | |
c5394b80 | 1155 | |
76f9c9cf | 1156 | if (print_level) |
c5394b80 | 1157 | { |
76f9c9cf TT |
1158 | uiout->text ("#"); |
1159 | uiout->field_fmt_int (2, ui_left, "level", | |
1160 | frame_relative_level (frame)); | |
c5394b80 | 1161 | } |
76f9c9cf TT |
1162 | get_user_print_options (&opts); |
1163 | if (opts.addressprint) | |
1164 | if (!sal.symtab | |
1165 | || frame_show_address (frame, sal) | |
1166 | || print_what == LOC_AND_ADDRESS) | |
311b5970 | 1167 | { |
76f9c9cf TT |
1168 | annotate_frame_address (); |
1169 | if (pc_p) | |
1170 | uiout->field_core_addr ("addr", gdbarch, pc); | |
1171 | else | |
1172 | uiout->field_string ("addr", "<unavailable>"); | |
1173 | annotate_frame_address_end (); | |
1174 | uiout->text (" in "); | |
311b5970 | 1175 | } |
76f9c9cf TT |
1176 | annotate_frame_function_name (); |
1177 | ||
1178 | string_file stb; | |
c6dc63a1 | 1179 | fprintf_symbol_filtered (&stb, funname ? funname.get () : "??", |
76f9c9cf TT |
1180 | funlang, DMGL_ANSI); |
1181 | uiout->field_stream ("func", stb); | |
1182 | uiout->wrap_hint (" "); | |
1183 | annotate_frame_args (); | |
1184 | ||
1185 | uiout->text (" ("); | |
1186 | if (print_args) | |
10f489e5 | 1187 | { |
76f9c9cf TT |
1188 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1189 | int numargs; | |
1190 | ||
1191 | if (gdbarch_frame_num_args_p (gdbarch)) | |
10f489e5 | 1192 | { |
76f9c9cf TT |
1193 | numargs = gdbarch_frame_num_args (gdbarch, frame); |
1194 | gdb_assert (numargs >= 0); | |
10f489e5 | 1195 | } |
76f9c9cf TT |
1196 | else |
1197 | numargs = -1; | |
1198 | ||
1199 | { | |
1200 | ui_out_emit_list list_emitter (uiout, "args"); | |
1201 | TRY | |
1202 | { | |
1203 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1204 | } | |
1205 | CATCH (e, RETURN_MASK_ERROR) | |
1206 | { | |
1207 | } | |
1208 | END_CATCH | |
10f489e5 | 1209 | |
76f9c9cf TT |
1210 | /* FIXME: ARGS must be a list. If one argument is a string it |
1211 | will have " that will not be properly escaped. */ | |
1212 | } | |
1213 | QUIT; | |
10f489e5 | 1214 | } |
76f9c9cf TT |
1215 | uiout->text (")"); |
1216 | if (sal.symtab) | |
1217 | { | |
1218 | const char *filename_display; | |
1b56eb55 | 1219 | |
76f9c9cf TT |
1220 | filename_display = symtab_to_filename_for_display (sal.symtab); |
1221 | annotate_frame_source_begin (); | |
1222 | uiout->wrap_hint (" "); | |
1223 | uiout->text (" at "); | |
1224 | annotate_frame_source_file (); | |
1225 | uiout->field_string ("file", filename_display); | |
1226 | if (uiout->is_mi_like_p ()) | |
1227 | { | |
1228 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1229 | |
76f9c9cf TT |
1230 | uiout->field_string ("fullname", fullname); |
1231 | } | |
1232 | annotate_frame_source_file_end (); | |
1233 | uiout->text (":"); | |
1234 | annotate_frame_source_line (); | |
1235 | uiout->field_int ("line", sal.line); | |
1236 | annotate_frame_source_end (); | |
1237 | } | |
c906108c | 1238 | |
76f9c9cf TT |
1239 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
1240 | { | |
1241 | char *lib = solib_name_from_address (get_frame_program_space (frame), | |
1242 | get_frame_pc (frame)); | |
4d1eb6b4 | 1243 | |
76f9c9cf TT |
1244 | if (lib) |
1245 | { | |
1246 | annotate_frame_where (); | |
1247 | uiout->wrap_hint (" "); | |
1248 | uiout->text (" from "); | |
1249 | uiout->field_string ("from", lib); | |
1250 | } | |
1251 | } | |
1252 | } | |
e514a9d6 | 1253 | |
112e8700 | 1254 | uiout->text ("\n"); |
c906108c SS |
1255 | } |
1256 | \f | |
c5aa993b | 1257 | |
a0d34a39 AB |
1258 | /* Read a frame specification in whatever the appropriate format is from |
1259 | FRAME_EXP. Call error() if the specification is in any way invalid (so | |
34f81801 SM |
1260 | this function never returns NULL). When SELECTED_FRAME_P is non-NULL |
1261 | set its target to indicate that the default selected frame was used. */ | |
c906108c | 1262 | |
1c8831c5 | 1263 | static struct frame_info * |
a0d34a39 | 1264 | parse_frame_specification (const char *frame_exp, int *selected_frame_p) |
c906108c | 1265 | { |
1c8831c5 AC |
1266 | int numargs; |
1267 | struct value *args[4]; | |
1268 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1269 | |
1c8831c5 AC |
1270 | if (frame_exp == NULL) |
1271 | numargs = 0; | |
1272 | else | |
c906108c | 1273 | { |
1c8831c5 AC |
1274 | numargs = 0; |
1275 | while (1) | |
c906108c | 1276 | { |
1c8831c5 AC |
1277 | const char *p; |
1278 | ||
1279 | /* Skip leading white space, bail of EOL. */ | |
f1735a53 | 1280 | frame_exp = skip_spaces (frame_exp); |
1c8831c5 AC |
1281 | if (!*frame_exp) |
1282 | break; | |
c906108c | 1283 | |
1c8831c5 AC |
1284 | /* Parse the argument, extract it, save it. */ |
1285 | for (p = frame_exp; | |
8d3fea16 | 1286 | *p && !ISSPACE (*p); |
1c8831c5 | 1287 | p++); |
2003f3d8 | 1288 | std::string addr_string (frame_exp, p - frame_exp); |
c906108c | 1289 | frame_exp = p; |
1c8831c5 AC |
1290 | |
1291 | /* NOTE: Parse and evaluate expression, but do not use | |
1292 | functions such as parse_and_eval_long or | |
1293 | parse_and_eval_address to also extract the value. | |
1294 | Instead value_as_long and value_as_address are used. | |
1295 | This avoids problems with expressions that contain | |
1296 | side-effects. */ | |
1297 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1298 | error (_("Too many args in frame specification")); |
2003f3d8 | 1299 | args[numargs++] = parse_and_eval (addr_string.c_str ()); |
c906108c SS |
1300 | } |
1301 | } | |
1302 | ||
1c8831c5 AC |
1303 | /* If no args, default to the selected frame. */ |
1304 | if (numargs == 0) | |
c906108c | 1305 | { |
1c8831c5 AC |
1306 | if (selected_frame_p != NULL) |
1307 | (*selected_frame_p) = 1; | |
a0d34a39 | 1308 | return get_selected_frame (_("No stack.")); |
1c8831c5 | 1309 | } |
c906108c | 1310 | |
1c8831c5 AC |
1311 | /* None of the remaining use the selected frame. */ |
1312 | if (selected_frame_p != NULL) | |
98f276a0 | 1313 | (*selected_frame_p) = 0; |
c906108c | 1314 | |
1c8831c5 AC |
1315 | /* Assume the single arg[0] is an integer, and try using that to |
1316 | select a frame relative to current. */ | |
1317 | if (numargs == 1) | |
1318 | { | |
1319 | struct frame_info *fid; | |
1320 | int level = value_as_long (args[0]); | |
433759f7 | 1321 | |
1c8831c5 AC |
1322 | fid = find_relative_frame (get_current_frame (), &level); |
1323 | if (level == 0) | |
c378eb4e | 1324 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1325 | return fid; |
1326 | } | |
c906108c | 1327 | |
1c8831c5 AC |
1328 | /* Convert each value into a corresponding address. */ |
1329 | { | |
1330 | int i; | |
433759f7 | 1331 | |
1c8831c5 | 1332 | for (i = 0; i < numargs; i++) |
1e275f79 | 1333 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1334 | } |
c5aa993b | 1335 | |
1c8831c5 AC |
1336 | /* Assume that the single arg[0] is an address, use that to identify |
1337 | a frame with a matching ID. Should this also accept stack/pc or | |
1338 | stack/pc/special. */ | |
1339 | if (numargs == 1) | |
1340 | { | |
1341 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1342 | struct frame_info *fid; | |
1343 | ||
1c8831c5 AC |
1344 | /* If (s)he specifies the frame with an address, he deserves |
1345 | what (s)he gets. Still, give the highest one that matches. | |
1346 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1347 | know). */ | |
1348 | for (fid = get_current_frame (); | |
1349 | fid != NULL; | |
1350 | fid = get_prev_frame (fid)) | |
1351 | { | |
1352 | if (frame_id_eq (id, get_frame_id (fid))) | |
1353 | { | |
c7ce8faa DJ |
1354 | struct frame_info *prev_frame; |
1355 | ||
1356 | while (1) | |
1357 | { | |
1358 | prev_frame = get_prev_frame (fid); | |
1359 | if (!prev_frame | |
1360 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1361 | break; | |
1362 | fid = prev_frame; | |
1363 | } | |
1c8831c5 AC |
1364 | return fid; |
1365 | } | |
1366 | } | |
c906108c SS |
1367 | } |
1368 | ||
1c8831c5 AC |
1369 | /* We couldn't identify the frame as an existing frame, but |
1370 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1371 | if (numargs == 1) |
1372 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1373 | else if (numargs == 2) |
1374 | return create_new_frame (addrs[0], addrs[1]); | |
1375 | else | |
8a3fe4f8 | 1376 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1377 | } |
1378 | ||
033a42c2 MK |
1379 | /* Print verbosely the selected frame or the frame at address |
1380 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1381 | |
1382 | static void | |
1d12d88f | 1383 | info_frame_command (const char *addr_exp, int from_tty) |
c906108c SS |
1384 | { |
1385 | struct frame_info *fi; | |
c906108c SS |
1386 | struct symbol *func; |
1387 | struct symtab *s; | |
1388 | struct frame_info *calling_frame_info; | |
167e4384 | 1389 | int numregs; |
0d5cff50 | 1390 | const char *funname = 0; |
c906108c | 1391 | enum language funlang = language_unknown; |
82de1e5b | 1392 | const char *pc_regname; |
1c8831c5 | 1393 | int selected_frame_p; |
7500260a | 1394 | struct gdbarch *gdbarch; |
008f8f2e PA |
1395 | CORE_ADDR frame_pc; |
1396 | int frame_pc_p; | |
e5e6f788 YQ |
1397 | /* Initialize it to avoid "may be used uninitialized" warning. */ |
1398 | CORE_ADDR caller_pc = 0; | |
492d29ea | 1399 | int caller_pc_p = 0; |
c906108c | 1400 | |
a0d34a39 | 1401 | fi = parse_frame_specification (addr_exp, &selected_frame_p); |
12368003 | 1402 | gdbarch = get_frame_arch (fi); |
c906108c | 1403 | |
82de1e5b AC |
1404 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1405 | is not a good name. */ | |
12368003 | 1406 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1407 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1408 | easily not match that of the internal value returned by |
1409 | get_frame_pc(). */ | |
12368003 | 1410 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1411 | else |
3e8c568d | 1412 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1413 | architectures will often have a hardware register called "pc", |
1414 | and that register's value, again, can easily not match | |
1415 | get_frame_pc(). */ | |
1416 | pc_regname = "pc"; | |
1417 | ||
008f8f2e | 1418 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
c906108c | 1419 | func = get_frame_function (fi); |
51abb421 | 1420 | symtab_and_line sal = find_frame_sal (fi); |
008f8f2e | 1421 | s = sal.symtab; |
2003f3d8 | 1422 | gdb::unique_xmalloc_ptr<char> func_only; |
c906108c SS |
1423 | if (func) |
1424 | { | |
3567439c | 1425 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1426 | funlang = SYMBOL_LANGUAGE (func); |
1427 | if (funlang == language_cplus) | |
1428 | { | |
3567439c DJ |
1429 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1430 | to display the demangled name that we already have | |
1431 | stored in the symbol table, but we stored a version | |
1432 | with DMGL_PARAMS turned on, and here we don't want to | |
1433 | display parameters. So remove the parameters. */ | |
109483d9 | 1434 | func_only = cp_remove_params (funname); |
433759f7 | 1435 | |
3567439c | 1436 | if (func_only) |
2003f3d8 | 1437 | funname = func_only.get (); |
c5aa993b | 1438 | } |
c906108c | 1439 | } |
008f8f2e | 1440 | else if (frame_pc_p) |
c906108c | 1441 | { |
7cbd4a93 | 1442 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1443 | |
008f8f2e | 1444 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1445 | if (msymbol.minsym != NULL) |
c906108c | 1446 | { |
efd66ac6 TT |
1447 | funname = MSYMBOL_PRINT_NAME (msymbol.minsym); |
1448 | funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1449 | } |
1450 | } | |
1451 | calling_frame_info = get_prev_frame (fi); | |
1452 | ||
1c8831c5 | 1453 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1454 | { |
a3f17187 | 1455 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1456 | frame_relative_level (fi)); |
c906108c SS |
1457 | } |
1458 | else | |
1459 | { | |
a3f17187 | 1460 | printf_filtered (_("Stack frame at ")); |
c906108c | 1461 | } |
5af949e3 | 1462 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1463 | printf_filtered (":\n"); |
82de1e5b | 1464 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1465 | if (frame_pc_p) |
1466 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1467 | else | |
1468 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1469 | |
1470 | wrap_here (" "); | |
1471 | if (funname) | |
1472 | { | |
1473 | printf_filtered (" in "); | |
1474 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1475 | DMGL_ANSI | DMGL_PARAMS); | |
1476 | } | |
1477 | wrap_here (" "); | |
1478 | if (sal.symtab) | |
05cba821 JK |
1479 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1480 | sal.line); | |
c906108c SS |
1481 | puts_filtered ("; "); |
1482 | wrap_here (" "); | |
782d47df PA |
1483 | printf_filtered ("saved %s = ", pc_regname); |
1484 | ||
a038fa3e | 1485 | if (!frame_id_p (frame_unwind_caller_id (fi))) |
c620c3e4 | 1486 | val_print_not_saved (gdb_stdout); |
a038fa3e | 1487 | else |
782d47df | 1488 | { |
a038fa3e | 1489 | TRY |
782d47df | 1490 | { |
a038fa3e MM |
1491 | caller_pc = frame_unwind_caller_pc (fi); |
1492 | caller_pc_p = 1; | |
782d47df | 1493 | } |
a038fa3e MM |
1494 | CATCH (ex, RETURN_MASK_ERROR) |
1495 | { | |
1496 | switch (ex.error) | |
1497 | { | |
1498 | case NOT_AVAILABLE_ERROR: | |
1499 | val_print_unavailable (gdb_stdout); | |
1500 | break; | |
1501 | case OPTIMIZED_OUT_ERROR: | |
1502 | val_print_not_saved (gdb_stdout); | |
1503 | break; | |
1504 | default: | |
1505 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1506 | break; | |
1507 | } | |
1508 | } | |
1509 | END_CATCH | |
782d47df | 1510 | } |
492d29ea PA |
1511 | |
1512 | if (caller_pc_p) | |
782d47df | 1513 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
c906108c SS |
1514 | printf_filtered ("\n"); |
1515 | ||
55feb689 DJ |
1516 | if (calling_frame_info == NULL) |
1517 | { | |
1518 | enum unwind_stop_reason reason; | |
1519 | ||
1520 | reason = get_frame_unwind_stop_reason (fi); | |
1521 | if (reason != UNWIND_NO_REASON) | |
1522 | printf_filtered (_(" Outermost frame: %s\n"), | |
53e8a631 | 1523 | frame_stop_reason_string (fi)); |
55feb689 | 1524 | } |
111c6489 JK |
1525 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1526 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1527 | else if (get_frame_type (fi) == INLINE_FRAME) |
1528 | printf_filtered (" inlined into frame %d", | |
1529 | frame_relative_level (get_prev_frame (fi))); | |
1530 | else | |
c906108c SS |
1531 | { |
1532 | printf_filtered (" called by frame at "); | |
5af949e3 | 1533 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1534 | gdb_stdout); |
c906108c | 1535 | } |
75e3c1f9 | 1536 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1537 | puts_filtered (","); |
1538 | wrap_here (" "); | |
75e3c1f9 | 1539 | if (get_next_frame (fi)) |
c906108c SS |
1540 | { |
1541 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1542 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1543 | gdb_stdout); |
c906108c | 1544 | } |
75e3c1f9 | 1545 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1546 | puts_filtered ("\n"); |
55feb689 | 1547 | |
c906108c | 1548 | if (s) |
1058bca7 AC |
1549 | printf_filtered (" source language %s.\n", |
1550 | language_str (s->language)); | |
c906108c | 1551 | |
c906108c SS |
1552 | { |
1553 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1554 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1555 | /* Number of args for this frame, or -1 if unknown. */ |
1556 | int numargs; | |
1557 | ||
1558 | if (arg_list == 0) | |
1559 | printf_filtered (" Arglist at unknown address.\n"); | |
1560 | else | |
1561 | { | |
1562 | printf_filtered (" Arglist at "); | |
5af949e3 | 1563 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1564 | printf_filtered (","); |
1565 | ||
7500260a | 1566 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1567 | { |
1568 | numargs = -1; | |
1569 | puts_filtered (" args: "); | |
1570 | } | |
c906108c | 1571 | else |
983a287a | 1572 | { |
7500260a | 1573 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1574 | gdb_assert (numargs >= 0); |
1575 | if (numargs == 0) | |
1576 | puts_filtered (" no args."); | |
1577 | else if (numargs == 1) | |
1578 | puts_filtered (" 1 arg: "); | |
1579 | else | |
1580 | printf_filtered (" %d args: ", numargs); | |
1581 | } | |
c906108c SS |
1582 | print_frame_args (func, fi, numargs, gdb_stdout); |
1583 | puts_filtered ("\n"); | |
1584 | } | |
1585 | } | |
1586 | { | |
1587 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1588 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1589 | |
1590 | if (arg_list == 0) | |
1591 | printf_filtered (" Locals at unknown address,"); | |
1592 | else | |
1593 | { | |
1594 | printf_filtered (" Locals at "); | |
5af949e3 | 1595 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1596 | printf_filtered (","); |
1597 | } | |
1598 | } | |
1599 | ||
4f460812 AC |
1600 | /* Print as much information as possible on the location of all the |
1601 | registers. */ | |
1602 | { | |
4f460812 AC |
1603 | int count; |
1604 | int i; | |
1605 | int need_nl = 1; | |
b0e4b369 | 1606 | int sp_regnum = gdbarch_sp_regnum (gdbarch); |
4f460812 AC |
1607 | |
1608 | /* The sp is special; what's displayed isn't the save address, but | |
1609 | the value of the previous frame's sp. This is a legacy thing, | |
1610 | at one stage the frame cached the previous frame's SP instead | |
1611 | of its address, hence it was easiest to just display the cached | |
1612 | value. */ | |
b0e4b369 | 1613 | if (sp_regnum >= 0) |
4f460812 | 1614 | { |
b0e4b369 AH |
1615 | struct value *value = frame_unwind_register_value (fi, sp_regnum); |
1616 | gdb_assert (value != NULL); | |
1617 | ||
1618 | if (!value_optimized_out (value) && value_entirely_available (value)) | |
4f460812 | 1619 | { |
b0e4b369 AH |
1620 | if (VALUE_LVAL (value) == not_lval) |
1621 | { | |
1622 | CORE_ADDR sp; | |
1623 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1624 | int sp_size = register_size (gdbarch, sp_regnum); | |
1625 | ||
1626 | sp = extract_unsigned_integer (value_contents_all (value), | |
1627 | sp_size, byte_order); | |
1628 | ||
1629 | printf_filtered (" Previous frame's sp is "); | |
1630 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); | |
1631 | printf_filtered ("\n"); | |
1632 | } | |
1633 | else if (VALUE_LVAL (value) == lval_memory) | |
1634 | { | |
1635 | printf_filtered (" Previous frame's sp at "); | |
1636 | fputs_filtered (paddress (gdbarch, value_address (value)), | |
1637 | gdb_stdout); | |
1638 | printf_filtered ("\n"); | |
1639 | } | |
1640 | else if (VALUE_LVAL (value) == lval_register) | |
1641 | { | |
1642 | printf_filtered (" Previous frame's sp in %s\n", | |
1643 | gdbarch_register_name (gdbarch, | |
1644 | VALUE_REGNUM (value))); | |
1645 | } | |
1646 | ||
1647 | release_value (value); | |
4f460812 AC |
1648 | need_nl = 0; |
1649 | } | |
1650 | /* else keep quiet. */ | |
1651 | } | |
1652 | ||
1653 | count = 0; | |
7500260a UW |
1654 | numregs = gdbarch_num_regs (gdbarch) |
1655 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1656 | for (i = 0; i < numregs; i++) |
b0e4b369 | 1657 | if (i != sp_regnum |
7500260a | 1658 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4f460812 | 1659 | { |
b0e4b369 AH |
1660 | enum lval_type lval; |
1661 | int optimized; | |
1662 | int unavailable; | |
1663 | CORE_ADDR addr; | |
1664 | int realnum; | |
1665 | ||
4f460812 AC |
1666 | /* Find out the location of the saved register without |
1667 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1668 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1669 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1670 | /* For moment, only display registers that were saved on the |
1671 | stack. */ | |
0fdb4f18 | 1672 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1673 | { |
1674 | if (count == 0) | |
1675 | puts_filtered (" Saved registers:\n "); | |
1676 | else | |
1677 | puts_filtered (","); | |
1678 | wrap_here (" "); | |
c9f4d572 | 1679 | printf_filtered (" %s at ", |
7500260a | 1680 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1681 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1682 | count++; |
1683 | } | |
1684 | } | |
1685 | if (count || need_nl) | |
c906108c | 1686 | puts_filtered ("\n"); |
4f460812 | 1687 | } |
c906108c SS |
1688 | } |
1689 | ||
6a70eb7d PW |
1690 | /* Return the innermost frame at level LEVEL. */ |
1691 | ||
1692 | static struct frame_info * | |
1693 | leading_innermost_frame (int level) | |
1694 | { | |
1695 | struct frame_info *leading; | |
1696 | ||
1697 | leading = get_current_frame (); | |
1698 | ||
1699 | gdb_assert (level >= 0); | |
1700 | ||
1701 | while (leading != nullptr && level) | |
1702 | { | |
1703 | QUIT; | |
1704 | leading = get_prev_frame (leading); | |
1705 | level--; | |
1706 | } | |
1707 | ||
1708 | return leading; | |
1709 | } | |
1710 | ||
1711 | /* Return the starting frame needed to handle COUNT outermost frames. */ | |
1712 | ||
1713 | static struct frame_info * | |
1714 | trailing_outermost_frame (int count) | |
1715 | { | |
1716 | struct frame_info *current; | |
1717 | struct frame_info *trailing; | |
1718 | ||
1719 | trailing = get_current_frame (); | |
1720 | ||
1721 | gdb_assert (count > 0); | |
1722 | ||
1723 | current = trailing; | |
1724 | while (current != nullptr && count--) | |
1725 | { | |
1726 | QUIT; | |
1727 | current = get_prev_frame (current); | |
1728 | } | |
1729 | ||
1730 | /* Will stop when CURRENT reaches the top of the stack. | |
1731 | TRAILING will be COUNT below it. */ | |
1732 | while (current != nullptr) | |
1733 | { | |
1734 | QUIT; | |
1735 | trailing = get_prev_frame (trailing); | |
1736 | current = get_prev_frame (current); | |
1737 | } | |
1738 | ||
1739 | return trailing; | |
1740 | } | |
1741 | ||
033a42c2 MK |
1742 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1743 | frames. */ | |
c906108c SS |
1744 | |
1745 | static void | |
1cf7e640 TT |
1746 | backtrace_command_1 (const char *count_exp, frame_filter_flags flags, |
1747 | int no_filters, int from_tty) | |
c906108c SS |
1748 | { |
1749 | struct frame_info *fi; | |
52f0bd74 | 1750 | int count; |
fb7eb8b5 | 1751 | int py_start = 0, py_end = 0; |
6dddc817 | 1752 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
c906108c SS |
1753 | |
1754 | if (!target_has_stack) | |
8a3fe4f8 | 1755 | error (_("No stack.")); |
c906108c | 1756 | |
c906108c SS |
1757 | if (count_exp) |
1758 | { | |
bb518678 | 1759 | count = parse_and_eval_long (count_exp); |
c906108c | 1760 | if (count < 0) |
fb7eb8b5 | 1761 | py_start = count; |
1e611234 PM |
1762 | else |
1763 | { | |
1764 | py_start = 0; | |
6893c19a TT |
1765 | /* The argument to apply_ext_lang_frame_filter is the number |
1766 | of the final frame to print, and frames start at 0. */ | |
1767 | py_end = count - 1; | |
1e611234 | 1768 | } |
c906108c SS |
1769 | } |
1770 | else | |
1e611234 PM |
1771 | { |
1772 | py_end = -1; | |
1773 | count = -1; | |
1774 | } | |
c906108c | 1775 | |
1e611234 | 1776 | if (! no_filters) |
c906108c | 1777 | { |
6dddc817 | 1778 | enum ext_lang_frame_args arg_type; |
c906108c | 1779 | |
1cf7e640 | 1780 | flags |= PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
6893c19a TT |
1781 | if (from_tty) |
1782 | flags |= PRINT_MORE_FRAMES; | |
1e611234 PM |
1783 | |
1784 | if (!strcmp (print_frame_arguments, "scalars")) | |
1785 | arg_type = CLI_SCALAR_VALUES; | |
1786 | else if (!strcmp (print_frame_arguments, "all")) | |
1787 | arg_type = CLI_ALL_VALUES; | |
1788 | else | |
1789 | arg_type = NO_VALUES; | |
1790 | ||
6dddc817 DE |
1791 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
1792 | arg_type, current_uiout, | |
1793 | py_start, py_end); | |
1e611234 | 1794 | } |
6dddc817 | 1795 | |
1e611234 PM |
1796 | /* Run the inbuilt backtrace if there are no filters registered, or |
1797 | "no-filters" has been specified from the command. */ | |
6dddc817 | 1798 | if (no_filters || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 | 1799 | { |
fb7eb8b5 TT |
1800 | struct frame_info *trailing; |
1801 | ||
1802 | /* The following code must do two things. First, it must set the | |
1803 | variable TRAILING to the frame from which we should start | |
1804 | printing. Second, it must set the variable count to the number | |
1805 | of frames which we should print, or -1 if all of them. */ | |
fb7eb8b5 TT |
1806 | |
1807 | if (count_exp != NULL && count < 0) | |
1808 | { | |
6a70eb7d | 1809 | trailing = trailing_outermost_frame (-count); |
fb7eb8b5 TT |
1810 | count = -1; |
1811 | } | |
6a70eb7d PW |
1812 | else |
1813 | trailing = get_current_frame (); | |
fb7eb8b5 | 1814 | |
59f66be3 | 1815 | for (fi = trailing; fi && count--; fi = get_prev_frame (fi)) |
1e611234 PM |
1816 | { |
1817 | QUIT; | |
1818 | ||
1819 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1820 | means further attempts to backtrace would fail (on the other | |
1821 | hand, perhaps the code does or could be fixed to make sure | |
1822 | the frame->prev field gets set to NULL in that case). */ | |
1823 | ||
08d72866 | 1824 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1cf7e640 | 1825 | if ((flags & PRINT_LOCALS) != 0) |
d0548fa2 PM |
1826 | { |
1827 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1828 | |
d0548fa2 | 1829 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1830 | |
d0548fa2 PM |
1831 | /* print_frame_local_vars invalidates FI. */ |
1832 | fi = frame_find_by_id (frame_id); | |
1833 | if (fi == NULL) | |
1834 | { | |
1835 | trailing = NULL; | |
1836 | warning (_("Unable to restore previously selected frame.")); | |
1837 | break; | |
1838 | } | |
8f043999 | 1839 | } |
55feb689 | 1840 | |
1e611234 PM |
1841 | /* Save the last frame to check for error conditions. */ |
1842 | trailing = fi; | |
1843 | } | |
c906108c | 1844 | |
1e611234 PM |
1845 | /* If we've stopped before the end, mention that. */ |
1846 | if (fi && from_tty) | |
1847 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1848 | |
1e611234 PM |
1849 | /* If we've run out of frames, and the reason appears to be an error |
1850 | condition, print it. */ | |
1851 | if (fi == NULL && trailing != NULL) | |
1852 | { | |
1853 | enum unwind_stop_reason reason; | |
55feb689 | 1854 | |
1e611234 PM |
1855 | reason = get_frame_unwind_stop_reason (trailing); |
1856 | if (reason >= UNWIND_FIRST_ERROR) | |
1857 | printf_filtered (_("Backtrace stopped: %s\n"), | |
53e8a631 | 1858 | frame_stop_reason_string (trailing)); |
1e611234 | 1859 | } |
55feb689 | 1860 | } |
c906108c SS |
1861 | } |
1862 | ||
1863 | static void | |
0b39b52e | 1864 | backtrace_command (const char *arg, int from_tty) |
c906108c | 1865 | { |
ea3b0687 | 1866 | bool filters = true; |
1cf7e640 | 1867 | frame_filter_flags flags = 0; |
c906108c | 1868 | |
033a42c2 | 1869 | if (arg) |
c906108c | 1870 | { |
ea3b0687 | 1871 | bool done = false; |
c906108c | 1872 | |
ea3b0687 | 1873 | while (!done) |
c5aa993b | 1874 | { |
ea3b0687 TT |
1875 | const char *save_arg = arg; |
1876 | std::string this_arg = extract_arg (&arg); | |
c5aa993b | 1877 | |
ea3b0687 TT |
1878 | if (this_arg.empty ()) |
1879 | break; | |
c5aa993b | 1880 | |
ea3b0687 TT |
1881 | if (subset_compare (this_arg.c_str (), "no-filters")) |
1882 | filters = false; | |
1883 | else if (subset_compare (this_arg.c_str (), "full")) | |
1cf7e640 | 1884 | flags |= PRINT_LOCALS; |
978d6c75 TT |
1885 | else if (subset_compare (this_arg.c_str (), "hide")) |
1886 | flags |= PRINT_HIDE; | |
c5aa993b JM |
1887 | else |
1888 | { | |
ea3b0687 TT |
1889 | /* Not a recognized argument, so stop. */ |
1890 | arg = save_arg; | |
1891 | done = true; | |
c5aa993b | 1892 | } |
c5aa993b | 1893 | } |
ea3b0687 TT |
1894 | |
1895 | if (*arg == '\0') | |
1896 | arg = NULL; | |
c906108c SS |
1897 | } |
1898 | ||
1cf7e640 | 1899 | backtrace_command_1 (arg, flags, !filters /* no frame-filters */, from_tty); |
c906108c SS |
1900 | } |
1901 | ||
2c58c0a9 PA |
1902 | /* Iterate over the local variables of a block B, calling CB with |
1903 | CB_DATA. */ | |
c906108c | 1904 | |
2c58c0a9 | 1905 | static void |
3977b71f | 1906 | iterate_over_block_locals (const struct block *b, |
2c58c0a9 PA |
1907 | iterate_over_block_arg_local_vars_cb cb, |
1908 | void *cb_data) | |
c906108c | 1909 | { |
8157b174 | 1910 | struct block_iterator iter; |
de4f826b | 1911 | struct symbol *sym; |
c906108c | 1912 | |
de4f826b | 1913 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1914 | { |
c906108c SS |
1915 | switch (SYMBOL_CLASS (sym)) |
1916 | { | |
1917 | case LOC_LOCAL: | |
1918 | case LOC_REGISTER: | |
1919 | case LOC_STATIC: | |
4c2df51b | 1920 | case LOC_COMPUTED: |
41bd68f5 | 1921 | case LOC_OPTIMIZED_OUT: |
2a2d4dc3 AS |
1922 | if (SYMBOL_IS_ARGUMENT (sym)) |
1923 | break; | |
4357ac6c TT |
1924 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1925 | break; | |
2c58c0a9 | 1926 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1927 | break; |
1928 | ||
1929 | default: | |
1930 | /* Ignore symbols which are not locals. */ | |
1931 | break; | |
1932 | } | |
1933 | } | |
c906108c SS |
1934 | } |
1935 | ||
65c06092 | 1936 | |
c906108c SS |
1937 | /* Same, but print labels. */ |
1938 | ||
65c06092 JB |
1939 | #if 0 |
1940 | /* Commented out, as the code using this function has also been | |
1941 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1942 | was commented out in the first place. The discussion introducing | |
1943 | this change (2007-12-04: Support lexical blocks and function bodies | |
1944 | that occupy non-contiguous address ranges) did not explain why | |
1945 | this change was made. */ | |
c906108c | 1946 | static int |
5af949e3 UW |
1947 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1948 | int *have_default, struct ui_file *stream) | |
c906108c | 1949 | { |
8157b174 | 1950 | struct block_iterator iter; |
52f0bd74 AC |
1951 | struct symbol *sym; |
1952 | int values_printed = 0; | |
c906108c | 1953 | |
de4f826b | 1954 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1955 | { |
3567439c | 1956 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1957 | { |
1958 | if (*have_default) | |
1959 | continue; | |
1960 | *have_default = 1; | |
1961 | } | |
1962 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1963 | { | |
1964 | struct symtab_and_line sal; | |
79a45b7d | 1965 | struct value_print_options opts; |
433759f7 | 1966 | |
c906108c SS |
1967 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1968 | values_printed = 1; | |
de5ad195 | 1969 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1970 | get_user_print_options (&opts); |
1971 | if (opts.addressprint) | |
c906108c SS |
1972 | { |
1973 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1974 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1975 | stream); | |
c906108c SS |
1976 | } |
1977 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1978 | sal.symtab->filename, sal.line); | |
1979 | } | |
1980 | } | |
033a42c2 | 1981 | |
c906108c SS |
1982 | return values_printed; |
1983 | } | |
65c06092 | 1984 | #endif |
c906108c | 1985 | |
2c58c0a9 PA |
1986 | /* Iterate over all the local variables in block B, including all its |
1987 | superblocks, stopping when the top-level block is reached. */ | |
1988 | ||
1989 | void | |
3977b71f | 1990 | iterate_over_block_local_vars (const struct block *block, |
2c58c0a9 PA |
1991 | iterate_over_block_arg_local_vars_cb cb, |
1992 | void *cb_data) | |
1993 | { | |
1994 | while (block) | |
1995 | { | |
1996 | iterate_over_block_locals (block, cb, cb_data); | |
1997 | /* After handling the function's top-level block, stop. Don't | |
1998 | continue to its superblock, the block of per-file | |
1999 | symbols. */ | |
2000 | if (BLOCK_FUNCTION (block)) | |
2001 | break; | |
2002 | block = BLOCK_SUPERBLOCK (block); | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | /* Data to be passed around in the calls to the locals and args | |
2007 | iterators. */ | |
c906108c | 2008 | |
2c58c0a9 PA |
2009 | struct print_variable_and_value_data |
2010 | { | |
8f043999 | 2011 | struct frame_id frame_id; |
2c58c0a9 PA |
2012 | int num_tabs; |
2013 | struct ui_file *stream; | |
2014 | int values_printed; | |
2015 | }; | |
2016 | ||
c378eb4e | 2017 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2018 | |
2019 | static void | |
2020 | do_print_variable_and_value (const char *print_name, | |
2021 | struct symbol *sym, | |
2022 | void *cb_data) | |
2023 | { | |
19ba03f4 SM |
2024 | struct print_variable_and_value_data *p |
2025 | = (struct print_variable_and_value_data *) cb_data; | |
8f043999 JK |
2026 | struct frame_info *frame; |
2027 | ||
2028 | frame = frame_find_by_id (p->frame_id); | |
2029 | if (frame == NULL) | |
2030 | { | |
2031 | warning (_("Unable to restore previously selected frame.")); | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2036 | ||
2037 | /* print_variable_and_value invalidates FRAME. */ | |
2038 | frame = NULL; | |
2c58c0a9 | 2039 | |
2c58c0a9 PA |
2040 | p->values_printed = 1; |
2041 | } | |
c906108c | 2042 | |
8f043999 JK |
2043 | /* Print all variables from the innermost up to the function block of FRAME. |
2044 | Print them with values to STREAM indented by NUM_TABS. | |
2045 | ||
2046 | This function will invalidate FRAME. */ | |
2047 | ||
c906108c | 2048 | static void |
033a42c2 | 2049 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2050 | struct ui_file *stream) |
c906108c | 2051 | { |
2c58c0a9 | 2052 | struct print_variable_and_value_data cb_data; |
3977b71f | 2053 | const struct block *block; |
1d4f5741 PA |
2054 | CORE_ADDR pc; |
2055 | ||
2056 | if (!get_frame_pc_if_available (frame, &pc)) | |
2057 | { | |
2058 | fprintf_filtered (stream, | |
2059 | _("PC unavailable, cannot determine locals.\n")); | |
2060 | return; | |
2061 | } | |
c906108c | 2062 | |
2c58c0a9 | 2063 | block = get_frame_block (frame, 0); |
c906108c SS |
2064 | if (block == 0) |
2065 | { | |
2066 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2067 | return; | |
2068 | } | |
c5aa993b | 2069 | |
8f043999 | 2070 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2071 | cb_data.num_tabs = 4 * num_tabs; |
2072 | cb_data.stream = stream; | |
2073 | cb_data.values_printed = 0; | |
2074 | ||
16c3b12f JB |
2075 | /* Temporarily change the selected frame to the given FRAME. |
2076 | This allows routines that rely on the selected frame instead | |
2077 | of being given a frame as parameter to use the correct frame. */ | |
45f25d6c | 2078 | scoped_restore_selected_frame restore_selected_frame; |
16c3b12f JB |
2079 | select_frame (frame); |
2080 | ||
45f25d6c AB |
2081 | iterate_over_block_local_vars (block, |
2082 | do_print_variable_and_value, | |
2083 | &cb_data); | |
8f043999 | 2084 | |
2c58c0a9 | 2085 | if (!cb_data.values_printed) |
033a42c2 | 2086 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2087 | } |
2088 | ||
c906108c | 2089 | void |
1d12d88f | 2090 | info_locals_command (const char *args, int from_tty) |
c906108c | 2091 | { |
033a42c2 | 2092 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2093 | 0, gdb_stdout); |
c906108c SS |
2094 | } |
2095 | ||
d392224a | 2096 | /* Iterate over all the argument variables in block B. */ |
2c58c0a9 PA |
2097 | |
2098 | void | |
3977b71f | 2099 | iterate_over_block_arg_vars (const struct block *b, |
2c58c0a9 PA |
2100 | iterate_over_block_arg_local_vars_cb cb, |
2101 | void *cb_data) | |
c906108c | 2102 | { |
8157b174 | 2103 | struct block_iterator iter; |
52f0bd74 | 2104 | struct symbol *sym, *sym2; |
c906108c | 2105 | |
de4f826b | 2106 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2107 | { |
2a2d4dc3 AS |
2108 | /* Don't worry about things which aren't arguments. */ |
2109 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2110 | { |
c906108c SS |
2111 | /* We have to look up the symbol because arguments can have |
2112 | two entries (one a parameter, one a local) and the one we | |
2113 | want is the local, which lookup_symbol will find for us. | |
2114 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2115 | small structure and gcc2 when the argument type is float | |
2116 | and it is passed as a double and converted to float by | |
2117 | the prologue (in the latter case the type of the LOC_ARG | |
2118 | symbol is double and the type of the LOC_LOCAL symbol is | |
2119 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2120 | are not combined in symbol-reading. */ | |
2121 | ||
de63c46b PA |
2122 | sym2 = lookup_symbol_search_name (SYMBOL_SEARCH_NAME (sym), |
2123 | b, VAR_DOMAIN).symbol; | |
2c58c0a9 | 2124 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2125 | } |
2126 | } | |
2c58c0a9 PA |
2127 | } |
2128 | ||
8f043999 JK |
2129 | /* Print all argument variables of the function of FRAME. |
2130 | Print them with values to STREAM. | |
2131 | ||
2132 | This function will invalidate FRAME. */ | |
2133 | ||
2c58c0a9 PA |
2134 | static void |
2135 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2136 | { | |
2137 | struct print_variable_and_value_data cb_data; | |
2138 | struct symbol *func; | |
1d4f5741 PA |
2139 | CORE_ADDR pc; |
2140 | ||
2141 | if (!get_frame_pc_if_available (frame, &pc)) | |
2142 | { | |
2143 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2144 | return; | |
2145 | } | |
2c58c0a9 PA |
2146 | |
2147 | func = get_frame_function (frame); | |
2148 | if (func == NULL) | |
2149 | { | |
2150 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2151 | return; | |
2152 | } | |
2153 | ||
8f043999 | 2154 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 | 2155 | cb_data.num_tabs = 0; |
d392224a | 2156 | cb_data.stream = stream; |
2c58c0a9 PA |
2157 | cb_data.values_printed = 0; |
2158 | ||
2159 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2160 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2161 | |
8f043999 JK |
2162 | /* do_print_variable_and_value invalidates FRAME. */ |
2163 | frame = NULL; | |
2164 | ||
2c58c0a9 | 2165 | if (!cb_data.values_printed) |
033a42c2 | 2166 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2167 | } |
2168 | ||
2169 | void | |
1d12d88f | 2170 | info_args_command (const char *ignore, int from_tty) |
c906108c | 2171 | { |
033a42c2 | 2172 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2173 | gdb_stdout); |
c906108c | 2174 | } |
c906108c | 2175 | \f |
c906108c | 2176 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2177 | Can return zero under various legitimate circumstances. |
2178 | ||
2179 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2180 | code address within the block returned. We use this to decide | |
2181 | which macros are in scope. */ | |
c906108c | 2182 | |
3977b71f | 2183 | const struct block * |
ae767bfb | 2184 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2185 | { |
d729566a | 2186 | if (!has_stack_frames ()) |
8ea051c5 PA |
2187 | return 0; |
2188 | ||
206415a3 | 2189 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2190 | } |
2191 | ||
2192 | /* Find a frame a certain number of levels away from FRAME. | |
2193 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2194 | Positive means go to earlier frames (up); negative, the reverse. | |
2195 | The int that contains the number of levels is counted toward | |
2196 | zero as the frames for those levels are found. | |
2197 | If the top or bottom frame is reached, that frame is returned, | |
2198 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2199 | how much farther the original request asked to go. */ | |
2200 | ||
2201 | struct frame_info * | |
033a42c2 | 2202 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2203 | { |
033a42c2 MK |
2204 | /* Going up is simple: just call get_prev_frame enough times or |
2205 | until the initial frame is reached. */ | |
c906108c SS |
2206 | while (*level_offset_ptr > 0) |
2207 | { | |
033a42c2 | 2208 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2209 | |
033a42c2 | 2210 | if (!prev) |
c906108c SS |
2211 | break; |
2212 | (*level_offset_ptr)--; | |
2213 | frame = prev; | |
2214 | } | |
033a42c2 | 2215 | |
c906108c | 2216 | /* Going down is just as simple. */ |
033a42c2 | 2217 | while (*level_offset_ptr < 0) |
c906108c | 2218 | { |
033a42c2 | 2219 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2220 | |
033a42c2 MK |
2221 | if (!next) |
2222 | break; | |
2223 | (*level_offset_ptr)++; | |
2224 | frame = next; | |
c906108c | 2225 | } |
033a42c2 | 2226 | |
c906108c SS |
2227 | return frame; |
2228 | } | |
2229 | ||
033a42c2 MK |
2230 | /* The "select_frame" command. With no argument this is a NOP. |
2231 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2232 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2233 | ||
2234 | See parse_frame_specification for more info on proper frame | |
2235 | expressions. */ | |
c906108c | 2236 | |
8b93c638 | 2237 | void |
1ee870c5 | 2238 | select_frame_command (const char *level_exp, int from_tty) |
c906108c | 2239 | { |
4034d0ff AT |
2240 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2241 | ||
a0d34a39 | 2242 | select_frame (parse_frame_specification (level_exp, NULL)); |
4034d0ff | 2243 | if (get_selected_frame_if_set () != prev_frame) |
76727919 | 2244 | gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME); |
c906108c SS |
2245 | } |
2246 | ||
033a42c2 MK |
2247 | /* The "frame" command. With no argument, print the selected frame |
2248 | briefly. With an argument, behave like select_frame and then print | |
2249 | the selected frame. */ | |
c906108c | 2250 | |
033a42c2 | 2251 | static void |
0b39b52e | 2252 | frame_command (const char *level_exp, int from_tty) |
c906108c | 2253 | { |
4034d0ff AT |
2254 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2255 | ||
2256 | select_frame (parse_frame_specification (level_exp, NULL)); | |
2257 | if (get_selected_frame_if_set () != prev_frame) | |
76727919 | 2258 | gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME); |
4034d0ff AT |
2259 | else |
2260 | print_selected_thread_frame (current_uiout, USER_SELECTED_FRAME); | |
c906108c SS |
2261 | } |
2262 | ||
033a42c2 MK |
2263 | /* Select the frame up one or COUNT_EXP stack levels from the |
2264 | previously selected frame, and print it briefly. */ | |
c906108c | 2265 | |
c906108c | 2266 | static void |
d3d3328b | 2267 | up_silently_base (const char *count_exp) |
c906108c | 2268 | { |
033a42c2 MK |
2269 | struct frame_info *frame; |
2270 | int count = 1; | |
2271 | ||
c906108c | 2272 | if (count_exp) |
bb518678 | 2273 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2274 | |
033a42c2 MK |
2275 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2276 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2277 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2278 | select_frame (frame); |
c906108c SS |
2279 | } |
2280 | ||
2281 | static void | |
0b39b52e | 2282 | up_silently_command (const char *count_exp, int from_tty) |
c906108c | 2283 | { |
c5aa993b | 2284 | up_silently_base (count_exp); |
c906108c SS |
2285 | } |
2286 | ||
2287 | static void | |
0b39b52e | 2288 | up_command (const char *count_exp, int from_tty) |
c906108c SS |
2289 | { |
2290 | up_silently_base (count_exp); | |
76727919 | 2291 | gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME); |
c906108c SS |
2292 | } |
2293 | ||
033a42c2 MK |
2294 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2295 | selected frame, and print it briefly. */ | |
c906108c | 2296 | |
c906108c | 2297 | static void |
d3d3328b | 2298 | down_silently_base (const char *count_exp) |
c906108c | 2299 | { |
52f0bd74 | 2300 | struct frame_info *frame; |
033a42c2 | 2301 | int count = -1; |
f89b749f | 2302 | |
c906108c | 2303 | if (count_exp) |
bb518678 | 2304 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2305 | |
033a42c2 MK |
2306 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2307 | if (count != 0 && count_exp == NULL) | |
c906108c | 2308 | { |
033a42c2 MK |
2309 | /* We only do this if COUNT_EXP is not specified. That way |
2310 | "down" means to really go down (and let me know if that is | |
2311 | impossible), but "down 9999" can be used to mean go all the | |
2312 | way down without getting an error. */ | |
c906108c | 2313 | |
033a42c2 | 2314 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2315 | } |
2316 | ||
0f7d239c | 2317 | select_frame (frame); |
c906108c SS |
2318 | } |
2319 | ||
c906108c | 2320 | static void |
0b39b52e | 2321 | down_silently_command (const char *count_exp, int from_tty) |
c906108c SS |
2322 | { |
2323 | down_silently_base (count_exp); | |
c906108c SS |
2324 | } |
2325 | ||
2326 | static void | |
0b39b52e | 2327 | down_command (const char *count_exp, int from_tty) |
c906108c SS |
2328 | { |
2329 | down_silently_base (count_exp); | |
76727919 | 2330 | gdb::observers::user_selected_context_changed.notify (USER_SELECTED_FRAME); |
c906108c | 2331 | } |
033a42c2 | 2332 | |
8b93c638 | 2333 | void |
0b39b52e | 2334 | return_command (const char *retval_exp, int from_tty) |
c906108c | 2335 | { |
901900c4 MGD |
2336 | /* Initialize it just to avoid a GCC false warning. */ |
2337 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2338 | struct frame_info *thisframe; |
d80b854b | 2339 | struct gdbarch *gdbarch; |
c906108c | 2340 | struct symbol *thisfun; |
3d6d86c6 | 2341 | struct value *return_value = NULL; |
6a3a010b | 2342 | struct value *function = NULL; |
fc70c2a0 | 2343 | const char *query_prefix = ""; |
c906108c | 2344 | |
5ed92fa8 UW |
2345 | thisframe = get_selected_frame ("No selected frame."); |
2346 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2347 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2348 | |
edb3359d DJ |
2349 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2350 | error (_("Can not force return from an inlined function.")); | |
2351 | ||
fc70c2a0 AC |
2352 | /* Compute the return value. If the computation triggers an error, |
2353 | let it bail. If the return type can't be handled, set | |
2354 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2355 | message. */ | |
c906108c SS |
2356 | if (retval_exp) |
2357 | { | |
4d01a485 | 2358 | expression_up retval_expr = parse_expression (retval_exp); |
c906108c SS |
2359 | struct type *return_type = NULL; |
2360 | ||
fc70c2a0 AC |
2361 | /* Compute the return value. Should the computation fail, this |
2362 | call throws an error. */ | |
4d01a485 | 2363 | return_value = evaluate_expression (retval_expr.get ()); |
c906108c | 2364 | |
fc70c2a0 AC |
2365 | /* Cast return value to the return type of the function. Should |
2366 | the cast fail, this call throws an error. */ | |
c906108c SS |
2367 | if (thisfun != NULL) |
2368 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2369 | if (return_type == NULL) | |
61ff14c6 | 2370 | { |
9eaf6705 TT |
2371 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2372 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2373 | error (_("Return value type not available for selected " |
2374 | "stack frame.\n" | |
2375 | "Please use an explicit cast of the value to return.")); | |
2376 | return_type = value_type (return_value); | |
2377 | } | |
f168693b | 2378 | return_type = check_typedef (return_type); |
c906108c SS |
2379 | return_value = value_cast (return_type, return_value); |
2380 | ||
fc70c2a0 AC |
2381 | /* Make sure the value is fully evaluated. It may live in the |
2382 | stack frame we're about to pop. */ | |
d69fe07e | 2383 | if (value_lazy (return_value)) |
c906108c | 2384 | value_fetch_lazy (return_value); |
c906108c | 2385 | |
6a3a010b | 2386 | if (thisfun != NULL) |
63e43d3a | 2387 | function = read_var_value (thisfun, NULL, thisframe); |
6a3a010b | 2388 | |
bbfdfe1c | 2389 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2390 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2391 | /* If the return-type is "void", don't try to find the | |
2392 | return-value's location. However, do still evaluate the | |
2393 | return expression so that, even when the expression result | |
2394 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2395 | occur. */ |
667e784f | 2396 | return_value = NULL; |
bbfdfe1c | 2397 | else if (thisfun != NULL) |
fc70c2a0 | 2398 | { |
bbfdfe1c DM |
2399 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2400 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2401 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2402 | { | |
2403 | query_prefix = "The location at which to store the " | |
2404 | "function's return value is unknown.\n" | |
2405 | "If you continue, the return value " | |
2406 | "that you specified will be ignored.\n"; | |
2407 | return_value = NULL; | |
2408 | } | |
fc70c2a0 | 2409 | } |
c906108c SS |
2410 | } |
2411 | ||
fc70c2a0 AC |
2412 | /* Does an interactive user really want to do this? Include |
2413 | information, such as how well GDB can handle the return value, in | |
2414 | the query message. */ | |
2415 | if (from_tty) | |
2416 | { | |
2417 | int confirmed; | |
433759f7 | 2418 | |
fc70c2a0 | 2419 | if (thisfun == NULL) |
e2e0b3e5 | 2420 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2421 | query_prefix); |
2422 | else | |
743649fd MW |
2423 | { |
2424 | if (TYPE_NO_RETURN (thisfun->type)) | |
d35b90fb | 2425 | warning (_("Function does not return normally to caller.")); |
743649fd MW |
2426 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
2427 | SYMBOL_PRINT_NAME (thisfun)); | |
2428 | } | |
fc70c2a0 | 2429 | if (!confirmed) |
8a3fe4f8 | 2430 | error (_("Not confirmed")); |
fc70c2a0 | 2431 | } |
c906108c | 2432 | |
a45ae3ed UW |
2433 | /* Discard the selected frame and all frames inner-to it. */ |
2434 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2435 | |
a1f5b845 | 2436 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2437 | if (return_value != NULL) |
2438 | { | |
df407dfe | 2439 | struct type *return_type = value_type (return_value); |
ac7936df | 2440 | struct gdbarch *gdbarch = get_current_regcache ()->arch (); |
42e2132c | 2441 | |
bbfdfe1c DM |
2442 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2443 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2444 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2445 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2446 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2447 | } |
1a2aab69 | 2448 | |
fc70c2a0 AC |
2449 | /* If we are at the end of a call dummy now, pop the dummy frame |
2450 | too. */ | |
e8bcf01f AC |
2451 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2452 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2453 | |
edbbff4a | 2454 | select_frame (get_current_frame ()); |
c906108c | 2455 | /* If interactive, print the frame that is now current. */ |
c906108c | 2456 | if (from_tty) |
edbbff4a | 2457 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2458 | } |
2459 | ||
39f0c204 AB |
2460 | /* Find the most inner frame in the current stack for a function called |
2461 | FUNCTION_NAME. If no matching frame is found return NULL. */ | |
c906108c | 2462 | |
39f0c204 AB |
2463 | static struct frame_info * |
2464 | find_frame_for_function (const char *function_name) | |
c906108c | 2465 | { |
39f0c204 AB |
2466 | /* Used to hold the lower and upper addresses for each of the |
2467 | SYMTAB_AND_LINEs found for functions matching FUNCTION_NAME. */ | |
2468 | struct function_bounds | |
2469 | { | |
2470 | CORE_ADDR low, high; | |
2471 | }; | |
033a42c2 | 2472 | struct frame_info *frame; |
39f0c204 | 2473 | bool found = false; |
c906108c | 2474 | int level = 1; |
c906108c | 2475 | |
39f0c204 | 2476 | gdb_assert (function_name != NULL); |
c906108c | 2477 | |
edbbff4a | 2478 | frame = get_current_frame (); |
6c5b2ebe | 2479 | std::vector<symtab_and_line> sals |
39f0c204 AB |
2480 | = decode_line_with_current_source (function_name, |
2481 | DECODE_LINE_FUNFIRSTLINE); | |
0b868b60 | 2482 | gdb::def_vector<function_bounds> func_bounds (sals.size ()); |
39f0c204 | 2483 | for (size_t i = 0; i < sals.size (); i++) |
c906108c | 2484 | { |
6c5b2ebe | 2485 | if (sals[i].pspace != current_program_space) |
f8eba3c6 | 2486 | func_bounds[i].low = func_bounds[i].high = 0; |
6c5b2ebe PA |
2487 | else if (sals[i].pc == 0 |
2488 | || find_pc_partial_function (sals[i].pc, NULL, | |
f8eba3c6 TT |
2489 | &func_bounds[i].low, |
2490 | &func_bounds[i].high) == 0) | |
39f0c204 | 2491 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2492 | } |
2493 | ||
2494 | do | |
2495 | { | |
6c5b2ebe | 2496 | for (size_t i = 0; (i < sals.size () && !found); i++) |
033a42c2 MK |
2497 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2498 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2499 | if (!found) |
2500 | { | |
2501 | level = 1; | |
033a42c2 | 2502 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2503 | } |
2504 | } | |
2505 | while (!found && level == 0); | |
2506 | ||
c906108c | 2507 | if (!found) |
39f0c204 AB |
2508 | frame = NULL; |
2509 | ||
2510 | return frame; | |
2511 | } | |
2512 | ||
2513 | /* Implements the dbx 'func' command. */ | |
2514 | ||
2515 | static void | |
2516 | func_command (const char *arg, int from_tty) | |
2517 | { | |
2518 | if (arg == NULL) | |
2519 | return; | |
2520 | ||
2521 | struct frame_info *frame = find_frame_for_function (arg); | |
2522 | if (frame == NULL) | |
61367c61 | 2523 | error (_("'%s' not within current stack frame."), arg); |
39f0c204 AB |
2524 | if (frame != get_selected_frame (NULL)) |
2525 | { | |
2526 | select_frame (frame); | |
2527 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); | |
2528 | } | |
c906108c | 2529 | } |
033a42c2 | 2530 | |
6a70eb7d PW |
2531 | /* Apply a GDB command to all stack frames, or a set of identified frames, |
2532 | or innermost COUNT frames. | |
2533 | With a negative COUNT, apply command on outermost -COUNT frames. | |
2534 | ||
2535 | frame apply 3 info frame Apply 'info frame' to frames 0, 1, 2 | |
2536 | frame apply -3 info frame Apply 'info frame' to outermost 3 frames. | |
2537 | frame apply all x/i $pc Apply 'x/i $pc' cmd to all frames. | |
2538 | frame apply all -s p local_var_no_idea_in_which_frame | |
2539 | If a frame has a local variable called | |
2540 | local_var_no_idea_in_which_frame, print frame | |
2541 | and value of local_var_no_idea_in_which_frame. | |
2542 | frame apply all -s -q p local_var_no_idea_in_which_frame | |
2543 | Same as before, but only print the variable value. | |
2544 | frame apply level 2-5 0 4-7 -s p i = i + 1 | |
2545 | Adds 1 to the variable i in the specified frames. | |
2546 | Note that i will be incremented twice in | |
2547 | frames 4 and 5. */ | |
2548 | ||
2549 | /* Apply a GDB command to COUNT stack frames, starting at TRAILING. | |
2550 | CMD starts with 0 or more qcs flags followed by the GDB command to apply. | |
2551 | COUNT -1 means all frames starting at TRAILING. WHICH_COMMAND is used | |
2552 | for error messages. */ | |
2553 | ||
2554 | static void | |
2555 | frame_apply_command_count (const char *which_command, | |
2556 | const char *cmd, int from_tty, | |
2557 | struct frame_info *trailing, int count) | |
2558 | { | |
2559 | qcs_flags flags; | |
2560 | struct frame_info *fi; | |
2561 | ||
2562 | while (cmd != NULL && parse_flags_qcs (which_command, &cmd, &flags)) | |
2563 | ; | |
2564 | ||
2565 | if (cmd == NULL || *cmd == '\0') | |
2566 | error (_("Please specify a command to apply on the selected frames")); | |
2567 | ||
2568 | /* The below will restore the current inferior/thread/frame. | |
2569 | Usually, only the frame is effectively to be restored. | |
2570 | But in case CMD switches of inferior/thread, better restore | |
2571 | these also. */ | |
2572 | scoped_restore_current_thread restore_thread; | |
2573 | ||
2574 | for (fi = trailing; fi && count--; fi = get_prev_frame (fi)) | |
2575 | { | |
2576 | QUIT; | |
2577 | ||
2578 | select_frame (fi); | |
2579 | TRY | |
2580 | { | |
2581 | std::string cmd_result; | |
2582 | { | |
2583 | /* In case CMD switches of inferior/thread/frame, the below | |
2584 | restores the inferior/thread/frame. FI can then be | |
2585 | set to the selected frame. */ | |
2586 | scoped_restore_current_thread restore_fi_current_frame; | |
2587 | ||
2588 | cmd_result = execute_command_to_string (cmd, from_tty); | |
2589 | } | |
2590 | fi = get_selected_frame (_("frame apply " | |
2591 | "unable to get selected frame.")); | |
2592 | if (!flags.silent || cmd_result.length () > 0) | |
2593 | { | |
2594 | if (!flags.quiet) | |
2595 | print_stack_frame (fi, 1, LOCATION, 0); | |
2596 | printf_filtered ("%s", cmd_result.c_str ()); | |
2597 | } | |
2598 | } | |
2599 | CATCH (ex, RETURN_MASK_ERROR) | |
2600 | { | |
2601 | fi = get_selected_frame (_("frame apply " | |
2602 | "unable to get selected frame.")); | |
2603 | if (!flags.silent) | |
2604 | { | |
2605 | if (!flags.quiet) | |
2606 | print_stack_frame (fi, 1, LOCATION, 0); | |
2607 | if (flags.cont) | |
2608 | printf_filtered ("%s\n", ex.message); | |
2609 | else | |
2610 | throw_exception (ex); | |
2611 | } | |
2612 | } | |
2613 | END_CATCH; | |
2614 | } | |
2615 | } | |
2616 | ||
2617 | /* Implementation of the "frame apply level" command. */ | |
2618 | ||
2619 | static void | |
2620 | frame_apply_level_command (const char *cmd, int from_tty) | |
2621 | { | |
2622 | if (!target_has_stack) | |
2623 | error (_("No stack.")); | |
2624 | ||
2625 | bool level_found = false; | |
2626 | const char *levels_str = cmd; | |
2627 | number_or_range_parser levels (levels_str); | |
2628 | ||
2629 | /* Skip the LEVEL list to find the flags and command args. */ | |
2630 | while (!levels.finished ()) | |
2631 | { | |
8d49165d TT |
2632 | /* Call for effect. */ |
2633 | levels.get_number (); | |
6a70eb7d PW |
2634 | |
2635 | level_found = true; | |
2636 | if (levels.in_range ()) | |
2637 | levels.skip_range (); | |
2638 | } | |
2639 | ||
2640 | if (!level_found) | |
2641 | error (_("Missing or invalid LEVEL... argument")); | |
2642 | ||
2643 | cmd = levels.cur_tok (); | |
2644 | ||
2645 | /* Redo the LEVELS parsing, but applying COMMAND. */ | |
2646 | levels.init (levels_str); | |
2647 | while (!levels.finished ()) | |
2648 | { | |
2649 | const int level_beg = levels.get_number (); | |
2650 | int n_frames; | |
2651 | ||
2652 | if (levels.in_range ()) | |
2653 | { | |
2654 | n_frames = levels.end_value () - level_beg + 1; | |
2655 | levels.skip_range (); | |
2656 | } | |
2657 | else | |
2658 | n_frames = 1; | |
2659 | ||
2660 | frame_apply_command_count ("frame apply level", cmd, from_tty, | |
2661 | leading_innermost_frame (level_beg), n_frames); | |
2662 | } | |
2663 | } | |
2664 | ||
2665 | /* Implementation of the "frame apply all" command. */ | |
2666 | ||
2667 | static void | |
2668 | frame_apply_all_command (const char *cmd, int from_tty) | |
2669 | { | |
2670 | if (!target_has_stack) | |
2671 | error (_("No stack.")); | |
2672 | ||
2673 | frame_apply_command_count ("frame apply all", cmd, from_tty, | |
2674 | get_current_frame (), INT_MAX); | |
2675 | } | |
2676 | ||
2677 | /* Implementation of the "frame apply" command. */ | |
2678 | ||
2679 | static void | |
2680 | frame_apply_command (const char* cmd, int from_tty) | |
2681 | { | |
2682 | int count; | |
2683 | struct frame_info *trailing; | |
2684 | ||
2685 | if (!target_has_stack) | |
2686 | error (_("No stack.")); | |
2687 | ||
2688 | if (cmd == NULL) | |
2689 | error (_("Missing COUNT argument.")); | |
2690 | count = get_number_trailer (&cmd, 0); | |
2691 | if (count == 0) | |
2692 | error (_("Invalid COUNT argument.")); | |
2693 | ||
2694 | if (count < 0) | |
2695 | { | |
2696 | trailing = trailing_outermost_frame (-count); | |
2697 | count = -1; | |
2698 | } | |
2699 | else | |
2700 | trailing = get_current_frame (); | |
2701 | ||
2702 | frame_apply_command_count ("frame apply", cmd, from_tty, | |
2703 | trailing, count); | |
2704 | } | |
2705 | ||
2706 | /* Implementation of the "faas" command. */ | |
2707 | ||
2708 | static void | |
2709 | faas_command (const char *cmd, int from_tty) | |
2710 | { | |
2711 | std::string expanded = std::string ("frame apply all -s ") + cmd; | |
2712 | execute_command (expanded.c_str (), from_tty); | |
2713 | } | |
2714 | ||
2715 | ||
2716 | /* Commands with a prefix of `frame'. */ | |
2717 | struct cmd_list_element *frame_cmd_list = NULL; | |
2718 | ||
c906108c | 2719 | void |
fba45db2 | 2720 | _initialize_stack (void) |
c906108c | 2721 | { |
6a70eb7d PW |
2722 | static struct cmd_list_element *frame_apply_list = NULL; |
2723 | ||
1bedd215 AC |
2724 | add_com ("return", class_stack, return_command, _("\ |
2725 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2726 | Control remains in the debugger, but when you continue\n\ |
2727 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2728 | If an argument is given, it is an expression for the value to return.")); |
2729 | ||
2730 | add_com ("up", class_stack, up_command, _("\ | |
2731 | Select and print stack frame that called this one.\n\ | |
2732 | An argument says how many frames up to go.")); | |
2733 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2734 | Same as the `up' command, but does not print anything.\n\ | |
2735 | This is useful in command scripts.")); | |
2736 | ||
2737 | add_com ("down", class_stack, down_command, _("\ | |
2738 | Select and print stack frame called by this one.\n\ | |
2739 | An argument says how many frames down to go.")); | |
c906108c SS |
2740 | add_com_alias ("do", "down", class_stack, 1); |
2741 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2742 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2743 | Same as the `down' command, but does not print anything.\n\ | |
2744 | This is useful in command scripts.")); | |
c906108c | 2745 | |
6a70eb7d | 2746 | add_prefix_cmd ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2747 | Select and print a stack frame.\nWith no argument, \ |
2748 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c | 2749 | An argument specifies the frame to select.\n\ |
6a70eb7d PW |
2750 | It can be a stack frame number or the address of the frame."), |
2751 | &frame_cmd_list, "frame ", 1, &cmdlist); | |
c906108c SS |
2752 | |
2753 | add_com_alias ("f", "frame", class_stack, 1); | |
2754 | ||
6a70eb7d PW |
2755 | #define FRAME_APPLY_FLAGS_HELP "\ |
2756 | Prints the frame location information followed by COMMAND output.\n\ | |
2757 | FLAG arguments are -q (quiet), -c (continue), -s (silent).\n\ | |
2758 | Flag -q disables printing the frame location information.\n\ | |
2759 | By default, if a COMMAND raises an error, frame apply is aborted.\n\ | |
2760 | Flag -c indicates to print the error and continue.\n\ | |
2761 | Flag -s indicates to silently ignore a COMMAND that raises an error\n\ | |
2762 | or produces no output." | |
2763 | ||
2764 | add_prefix_cmd ("apply", class_stack, frame_apply_command, | |
2765 | _("Apply a command to a number of frames.\n\ | |
2766 | Usage: frame apply COUNT [FLAG]... COMMAND\n\ | |
2767 | With a negative COUNT argument, applies the command on outermost -COUNT frames.\n" | |
2768 | FRAME_APPLY_FLAGS_HELP), | |
2769 | &frame_apply_list, "frame apply ", 1, &frame_cmd_list); | |
2770 | ||
2771 | add_cmd ("all", class_stack, frame_apply_all_command, | |
2772 | _("\ | |
2773 | Apply a command to all frames.\n\ | |
2774 | \n\ | |
2775 | Usage: frame apply all [FLAG]... COMMAND\n" | |
2776 | FRAME_APPLY_FLAGS_HELP), | |
2777 | &frame_apply_list); | |
2778 | ||
2779 | add_cmd ("level", class_stack, frame_apply_level_command, | |
2780 | _("\ | |
2781 | Apply a command to a list of frames.\n\ | |
2782 | \n\ | |
2783 | Usage: frame apply level LEVEL... [FLAG]... COMMAND\n\ | |
2784 | ID is a space-separated list of LEVELs of frames to apply COMMAND on.\n" | |
2785 | FRAME_APPLY_FLAGS_HELP), | |
2786 | &frame_apply_list); | |
2787 | ||
2788 | add_com ("faas", class_stack, faas_command, _("\ | |
2789 | Apply a command to all frames (ignoring errors and empty output).\n\ | |
2790 | Usage: faas COMMAND\n\ | |
2791 | shortcut for 'frame apply all -s COMMAND'")); | |
2792 | ||
4034d0ff | 2793 | add_com_suppress_notification ("select-frame", class_stack, select_frame_command, _("\ |
1bedd215 | 2794 | Select a stack frame without printing anything.\n\ |
c906108c | 2795 | An argument specifies the frame to select.\n\ |
9507b29c | 2796 | It can be a stack frame number or the address of the frame."), |
4034d0ff | 2797 | &cli_suppress_notification.user_selected_context); |
c906108c | 2798 | |
1bedd215 AC |
2799 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2800 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
9507b29c TT |
2801 | Usage: backtrace [QUALIFIERS]... [COUNT]\n\ |
2802 | With a negative argument, print outermost -COUNT frames.\n\ | |
2803 | Use of the 'full' qualifier also prints the values of the local variables.\n\ | |
1e611234 | 2804 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ |
9507b29c | 2805 | on this backtrace.")); |
c906108c | 2806 | add_com_alias ("bt", "backtrace", class_stack, 0); |
c906108c SS |
2807 | |
2808 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2809 | add_info ("stack", backtrace_command, | |
1bedd215 | 2810 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c | 2811 | add_info_alias ("s", "stack", 1); |
11db9430 | 2812 | add_info ("frame", info_frame_command, |
1bedd215 | 2813 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c | 2814 | add_info_alias ("f", "frame", 1); |
11db9430 | 2815 | add_info ("locals", info_locals_command, |
1bedd215 | 2816 | _("Local variables of current stack frame.")); |
11db9430 | 2817 | add_info ("args", info_args_command, |
1bedd215 | 2818 | _("Argument variables of current stack frame.")); |
c906108c SS |
2819 | |
2820 | if (dbx_commands) | |
1bedd215 | 2821 | add_com ("func", class_stack, func_command, _("\ |
41827fc3 TT |
2822 | Select the stack frame that contains NAME.\n\ |
2823 | Usage: func NAME")); | |
c906108c | 2824 | |
88408340 JB |
2825 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2826 | print_frame_arguments_choices, &print_frame_arguments, | |
2827 | _("Set printing of non-scalar frame arguments"), | |
2828 | _("Show printing of non-scalar frame arguments"), | |
2829 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2830 | ||
e7045703 DE |
2831 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2832 | &print_raw_frame_arguments, _("\ | |
2833 | Set whether to print frame arguments in raw form."), _("\ | |
2834 | Show whether to print frame arguments in raw form."), _("\ | |
2835 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2836 | pretty-printers for that value."), | |
2837 | NULL, NULL, | |
2838 | &setprintrawlist, &showprintrawlist); | |
2839 | ||
30c33a9f HZ |
2840 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2841 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2842 | Set whether to disassemble next source line or insn when execution stops."), |
2843 | _("\ | |
2844 | Show whether to disassemble next source line or insn when execution stops."), | |
2845 | _("\ | |
80a0ea0f EZ |
2846 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2847 | to displaying the source line itself. If the next source line cannot\n\ | |
2848 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2849 | will display disassembly of next instruction instead of showing the\n\ | |
2850 | source line.\n\ | |
2851 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2852 | cannot be displayed.\n\ | |
2853 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2854 | source line."), | |
30c33a9f HZ |
2855 | NULL, |
2856 | show_disassemble_next_line, | |
2857 | &setlist, &showlist); | |
a362e3d3 | 2858 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2859 | |
2860 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2861 | print_entry_values_choices, &print_entry_values, | |
2862 | _("Set printing of function arguments at function " | |
2863 | "entry"), | |
2864 | _("Show printing of function arguments at function " | |
2865 | "entry"), | |
2866 | _("\ | |
2867 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2868 | in addition to their current values. This option tells GDB whether\n\ | |
2869 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2870 | or both. Note that one or both of these values may be <optimized out>."), | |
2871 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2872 | } |