Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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" |
4034d0ff | 54 | #include "observer.h" |
ccefe4c4 | 55 | |
2421fe6f | 56 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
57 | of this setting. */ |
58 | ||
40478521 | 59 | static const char *const print_frame_arguments_choices[] = |
88408340 | 60 | {"all", "scalars", "none", NULL}; |
476f7b68 | 61 | static const char *print_frame_arguments = "scalars"; |
88408340 | 62 | |
e7045703 DE |
63 | /* If non-zero, don't invoke pretty-printers for frame arguments. */ |
64 | static int print_raw_frame_arguments; | |
65 | ||
e18b2753 JK |
66 | /* The possible choices of "set print entry-values", and the value |
67 | of this setting. */ | |
68 | ||
69 | const char print_entry_values_no[] = "no"; | |
70 | const char print_entry_values_only[] = "only"; | |
71 | const char print_entry_values_preferred[] = "preferred"; | |
72 | const char print_entry_values_if_needed[] = "if-needed"; | |
73 | const char print_entry_values_both[] = "both"; | |
74 | const char print_entry_values_compact[] = "compact"; | |
75 | const char print_entry_values_default[] = "default"; | |
40478521 | 76 | static const char *const print_entry_values_choices[] = |
e18b2753 JK |
77 | { |
78 | print_entry_values_no, | |
79 | print_entry_values_only, | |
80 | print_entry_values_preferred, | |
81 | print_entry_values_if_needed, | |
82 | print_entry_values_both, | |
83 | print_entry_values_compact, | |
84 | print_entry_values_default, | |
85 | NULL | |
86 | }; | |
87 | const char *print_entry_values = print_entry_values_default; | |
88 | ||
c378eb4e | 89 | /* Prototypes for local functions. */ |
c906108c | 90 | |
d9fcf2fb JM |
91 | static void print_frame_local_vars (struct frame_info *, int, |
92 | struct ui_file *); | |
c906108c | 93 | |
033a42c2 MK |
94 | static void print_frame (struct frame_info *frame, int print_level, |
95 | enum print_what print_what, int print_args, | |
c5394b80 JM |
96 | struct symtab_and_line sal); |
97 | ||
1bfeeb0f JL |
98 | static void set_last_displayed_sal (int valid, |
99 | struct program_space *pspace, | |
100 | CORE_ADDR addr, | |
101 | struct symtab *symtab, | |
102 | int line); | |
103 | ||
c906108c SS |
104 | /* Zero means do things normally; we are interacting directly with the |
105 | user. One means print the full filename and linenumber when a | |
106 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
107 | parse. Two means print similar annotations, but in many more | |
108 | cases and in a slightly different syntax. */ | |
109 | ||
110 | int annotation_level = 0; | |
1bfeeb0f JL |
111 | |
112 | /* These variables hold the last symtab and line we displayed to the user. | |
113 | * This is where we insert a breakpoint or a skiplist entry by default. */ | |
114 | static int last_displayed_sal_valid = 0; | |
115 | static struct program_space *last_displayed_pspace = 0; | |
116 | static CORE_ADDR last_displayed_addr = 0; | |
117 | static struct symtab *last_displayed_symtab = 0; | |
118 | static int last_displayed_line = 0; | |
c906108c | 119 | \f |
c5aa993b | 120 | |
edb3359d DJ |
121 | /* Return 1 if we should display the address in addition to the location, |
122 | because we are in the middle of a statement. */ | |
123 | ||
124 | static int | |
125 | frame_show_address (struct frame_info *frame, | |
126 | struct symtab_and_line sal) | |
127 | { | |
128 | /* If there is a line number, but no PC, then there is no location | |
129 | information associated with this sal. The only way that should | |
130 | happen is for the call sites of inlined functions (SAL comes from | |
131 | find_frame_sal). Otherwise, we would have some PC range if the | |
132 | SAL came from a line table. */ | |
133 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
134 | { | |
135 | if (get_next_frame (frame) == NULL) | |
136 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
137 | else | |
138 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | return get_frame_pc (frame) != sal.pc; | |
143 | } | |
144 | ||
4034d0ff AT |
145 | /* See frame.h. */ |
146 | ||
147 | void | |
148 | print_stack_frame_to_uiout (struct ui_out *uiout, struct frame_info *frame, | |
149 | int print_level, enum print_what print_what, | |
150 | int set_current_sal) | |
151 | { | |
67ad9399 | 152 | scoped_restore save_uiout = make_scoped_restore (¤t_uiout, uiout); |
4034d0ff AT |
153 | |
154 | print_stack_frame (frame, print_level, print_what, set_current_sal); | |
4034d0ff AT |
155 | } |
156 | ||
f9acce4a | 157 | /* Show or print a stack frame FRAME briefly. The output is formatted |
d762c46a AC |
158 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
159 | relative level, function name, argument list, and file name and | |
160 | line number. If the frame's PC is not at the beginning of the | |
161 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
162 | |
163 | void | |
033a42c2 | 164 | print_stack_frame (struct frame_info *frame, int print_level, |
08d72866 PA |
165 | enum print_what print_what, |
166 | int set_current_sal) | |
c906108c | 167 | { |
c906108c | 168 | |
aaf9e9fd | 169 | /* For mi, alway print location and address. */ |
79a45e25 | 170 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 171 | print_what = LOC_AND_ADDRESS; |
c906108c | 172 | |
492d29ea | 173 | TRY |
311b5970 | 174 | { |
08d72866 PA |
175 | print_frame_info (frame, print_level, print_what, 1 /* print_args */, |
176 | set_current_sal); | |
177 | if (set_current_sal) | |
5166082f | 178 | set_current_sal_from_frame (frame); |
311b5970 | 179 | } |
492d29ea PA |
180 | CATCH (e, RETURN_MASK_ERROR) |
181 | { | |
182 | } | |
183 | END_CATCH | |
311b5970 | 184 | } |
c906108c | 185 | |
033a42c2 MK |
186 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
187 | the offset of the first nameless argument, and NUM is the number of | |
188 | nameless arguments to print. FIRST is nonzero if this is the first | |
189 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
190 | |
191 | static void | |
033a42c2 | 192 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
193 | int first, struct ui_file *stream) |
194 | { | |
e17a4113 UW |
195 | struct gdbarch *gdbarch = get_frame_arch (frame); |
196 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
197 | int i; |
198 | CORE_ADDR argsaddr; | |
199 | long arg_value; | |
200 | ||
201 | for (i = 0; i < num; i++) | |
202 | { | |
203 | QUIT; | |
033a42c2 | 204 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
205 | if (!argsaddr) |
206 | return; | |
e17a4113 UW |
207 | arg_value = read_memory_integer (argsaddr + start, |
208 | sizeof (int), byte_order); | |
8d3b0994 AC |
209 | if (!first) |
210 | fprintf_filtered (stream, ", "); | |
211 | fprintf_filtered (stream, "%ld", arg_value); | |
212 | first = 0; | |
213 | start += sizeof (int); | |
214 | } | |
215 | } | |
216 | ||
93d86cef JK |
217 | /* Print single argument of inferior function. ARG must be already |
218 | read in. | |
219 | ||
220 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
221 | iff it should not be printed accoring to user settings. */ | |
222 | ||
223 | static void | |
224 | print_frame_arg (const struct frame_arg *arg) | |
225 | { | |
226 | struct ui_out *uiout = current_uiout; | |
93d86cef | 227 | struct cleanup *old_chain; |
f99d8bf4 | 228 | struct ui_file *stb; |
492d29ea | 229 | const char *error_message = NULL; |
93d86cef | 230 | |
f99d8bf4 PA |
231 | stb = mem_fileopen (); |
232 | old_chain = make_cleanup_ui_file_delete (stb); | |
93d86cef JK |
233 | |
234 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
235 | gdb_assert (arg->entry_kind == print_entry_values_no |
236 | || arg->entry_kind == print_entry_values_only | |
237 | || (!ui_out_is_mi_like_p (uiout) | |
238 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
239 | |
240 | annotate_arg_begin (); | |
241 | ||
242 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
f99d8bf4 | 243 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
93d86cef | 244 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); |
e18b2753 JK |
245 | if (arg->entry_kind == print_entry_values_compact) |
246 | { | |
247 | /* It is OK to provide invalid MI-like stream as with | |
248 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
f99d8bf4 | 249 | fputs_filtered ("=", stb); |
e18b2753 | 250 | |
f99d8bf4 | 251 | fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym), |
e18b2753 JK |
252 | SYMBOL_LANGUAGE (arg->sym), |
253 | DMGL_PARAMS | DMGL_ANSI); | |
254 | } | |
255 | if (arg->entry_kind == print_entry_values_only | |
256 | || arg->entry_kind == print_entry_values_compact) | |
f99d8bf4 | 257 | fputs_filtered ("@entry", stb); |
93d86cef JK |
258 | ui_out_field_stream (uiout, "name", stb); |
259 | annotate_arg_name_end (); | |
260 | ui_out_text (uiout, "="); | |
261 | ||
262 | if (!arg->val && !arg->error) | |
263 | ui_out_text (uiout, "..."); | |
264 | else | |
265 | { | |
266 | if (arg->error) | |
492d29ea | 267 | error_message = arg->error; |
93d86cef JK |
268 | else |
269 | { | |
492d29ea | 270 | TRY |
93d86cef JK |
271 | { |
272 | const struct language_defn *language; | |
273 | struct value_print_options opts; | |
274 | ||
275 | /* Avoid value_print because it will deref ref parameters. We | |
276 | just want to print their addresses. Print ??? for args whose | |
277 | address we do not know. We pass 2 as "recurse" to val_print | |
278 | because our standard indentation here is 4 spaces, and | |
279 | val_print indents 2 for each recurse. */ | |
280 | ||
281 | annotate_arg_value (value_type (arg->val)); | |
282 | ||
283 | /* Use the appropriate language to display our symbol, unless the | |
284 | user forced the language to a specific language. */ | |
285 | if (language_mode == language_mode_auto) | |
286 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
287 | else | |
288 | language = current_language; | |
289 | ||
2a998fc0 | 290 | get_no_prettyformat_print_options (&opts); |
3343315b | 291 | opts.deref_ref = 1; |
e7045703 | 292 | opts.raw = print_raw_frame_arguments; |
93d86cef JK |
293 | |
294 | /* True in "summary" mode, false otherwise. */ | |
295 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
296 | ||
f99d8bf4 | 297 | common_val_print (arg->val, stb, 2, &opts, language); |
93d86cef | 298 | } |
492d29ea PA |
299 | CATCH (except, RETURN_MASK_ERROR) |
300 | { | |
301 | error_message = except.message; | |
302 | } | |
303 | END_CATCH | |
93d86cef | 304 | } |
492d29ea | 305 | if (error_message != NULL) |
f99d8bf4 | 306 | fprintf_filtered (stb, _("<error reading variable: %s>"), |
492d29ea | 307 | error_message); |
93d86cef JK |
308 | } |
309 | ||
310 | ui_out_field_stream (uiout, "value", stb); | |
311 | ||
f99d8bf4 | 312 | /* Also invoke ui_out_tuple_end. */ |
93d86cef JK |
313 | do_cleanups (old_chain); |
314 | ||
315 | annotate_arg_end (); | |
316 | } | |
317 | ||
82a0a75f YQ |
318 | /* Read in inferior function local SYM at FRAME into ARGP. Caller is |
319 | responsible for xfree of ARGP->ERROR. This function never throws an | |
320 | exception. */ | |
321 | ||
322 | void | |
323 | read_frame_local (struct symbol *sym, struct frame_info *frame, | |
324 | struct frame_arg *argp) | |
325 | { | |
492d29ea PA |
326 | argp->sym = sym; |
327 | argp->val = NULL; | |
328 | argp->error = NULL; | |
329 | ||
330 | TRY | |
82a0a75f | 331 | { |
63e43d3a | 332 | argp->val = read_var_value (sym, NULL, frame); |
82a0a75f | 333 | } |
492d29ea PA |
334 | CATCH (except, RETURN_MASK_ERROR) |
335 | { | |
336 | argp->error = xstrdup (except.message); | |
337 | } | |
338 | END_CATCH | |
82a0a75f YQ |
339 | } |
340 | ||
93d86cef JK |
341 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is |
342 | responsible for xfree of ARGP->ERROR. This function never throws an | |
343 | exception. */ | |
344 | ||
345 | void | |
346 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 347 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 348 | { |
e18b2753 JK |
349 | struct value *val = NULL, *entryval = NULL; |
350 | char *val_error = NULL, *entryval_error = NULL; | |
351 | int val_equal = 0; | |
93d86cef | 352 | |
e18b2753 JK |
353 | if (print_entry_values != print_entry_values_only |
354 | && print_entry_values != print_entry_values_preferred) | |
355 | { | |
492d29ea | 356 | TRY |
e18b2753 | 357 | { |
63e43d3a | 358 | val = read_var_value (sym, NULL, frame); |
e18b2753 | 359 | } |
492d29ea | 360 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 361 | { |
224c3ddb | 362 | val_error = (char *) alloca (strlen (except.message) + 1); |
e18b2753 JK |
363 | strcpy (val_error, except.message); |
364 | } | |
492d29ea | 365 | END_CATCH |
e18b2753 JK |
366 | } |
367 | ||
24d6c2a0 TT |
368 | if (SYMBOL_COMPUTED_OPS (sym) != NULL |
369 | && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL | |
e18b2753 JK |
370 | && print_entry_values != print_entry_values_no |
371 | && (print_entry_values != print_entry_values_if_needed | |
372 | || !val || value_optimized_out (val))) | |
373 | { | |
492d29ea | 374 | TRY |
e18b2753 JK |
375 | { |
376 | const struct symbol_computed_ops *ops; | |
377 | ||
378 | ops = SYMBOL_COMPUTED_OPS (sym); | |
379 | entryval = ops->read_variable_at_entry (sym, frame); | |
380 | } | |
492d29ea | 381 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 382 | { |
492d29ea PA |
383 | if (except.error != NO_ENTRY_VALUE_ERROR) |
384 | { | |
385 | entryval_error = (char *) alloca (strlen (except.message) + 1); | |
386 | strcpy (entryval_error, except.message); | |
387 | } | |
e18b2753 | 388 | } |
492d29ea | 389 | END_CATCH |
e18b2753 | 390 | |
492d29ea PA |
391 | if (entryval != NULL && value_optimized_out (entryval)) |
392 | entryval = NULL; | |
e18b2753 JK |
393 | |
394 | if (print_entry_values == print_entry_values_compact | |
395 | || print_entry_values == print_entry_values_default) | |
396 | { | |
397 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
398 | ||
399 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
400 | { | |
744a8059 | 401 | struct type *type = value_type (val); |
e18b2753 | 402 | |
9a0dc9e3 PA |
403 | if (value_lazy (val)) |
404 | value_fetch_lazy (val); | |
405 | if (value_lazy (entryval)) | |
406 | value_fetch_lazy (entryval); | |
407 | ||
408 | if (value_contents_eq (val, 0, entryval, 0, TYPE_LENGTH (type))) | |
e18b2753 | 409 | { |
509f0fd9 JK |
410 | /* Initialize it just to avoid a GCC false warning. */ |
411 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
412 | |
413 | /* DW_AT_GNU_call_site_value does match with the current | |
414 | value. If it is a reference still try to verify if | |
415 | dereferenced DW_AT_GNU_call_site_data_value does not | |
416 | differ. */ | |
417 | ||
492d29ea | 418 | TRY |
a471c594 | 419 | { |
744a8059 | 420 | struct type *type_deref; |
a471c594 JK |
421 | |
422 | val_deref = coerce_ref (val); | |
423 | if (value_lazy (val_deref)) | |
424 | value_fetch_lazy (val_deref); | |
744a8059 | 425 | type_deref = value_type (val_deref); |
a471c594 JK |
426 | |
427 | entryval_deref = coerce_ref (entryval); | |
428 | if (value_lazy (entryval_deref)) | |
429 | value_fetch_lazy (entryval_deref); | |
430 | ||
431 | /* If the reference addresses match but dereferenced | |
432 | content does not match print them. */ | |
433 | if (val != val_deref | |
9a0dc9e3 PA |
434 | && value_contents_eq (val_deref, 0, |
435 | entryval_deref, 0, | |
436 | TYPE_LENGTH (type_deref))) | |
a471c594 JK |
437 | val_equal = 1; |
438 | } | |
492d29ea PA |
439 | CATCH (except, RETURN_MASK_ERROR) |
440 | { | |
441 | /* If the dereferenced content could not be | |
442 | fetched do not display anything. */ | |
443 | if (except.error == NO_ENTRY_VALUE_ERROR) | |
444 | val_equal = 1; | |
445 | else if (except.message != NULL) | |
446 | { | |
447 | entryval_error = (char *) alloca (strlen (except.message) + 1); | |
448 | strcpy (entryval_error, except.message); | |
449 | } | |
450 | } | |
451 | END_CATCH | |
a471c594 JK |
452 | |
453 | /* Value was not a reference; and its content matches. */ | |
454 | if (val == val_deref) | |
455 | val_equal = 1; | |
a471c594 JK |
456 | |
457 | if (val_equal) | |
458 | entryval = NULL; | |
e18b2753 JK |
459 | } |
460 | } | |
461 | ||
462 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
463 | in MI mode. */ | |
464 | ||
465 | if (val_error && entryval_error | |
466 | && strcmp (val_error, entryval_error) == 0) | |
467 | { | |
468 | entryval_error = NULL; | |
469 | ||
470 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
471 | the entry value even if no entry values are present in the | |
472 | inferior. */ | |
473 | } | |
474 | } | |
475 | } | |
476 | ||
477 | if (entryval == NULL) | |
93d86cef | 478 | { |
e18b2753 JK |
479 | if (print_entry_values == print_entry_values_preferred) |
480 | { | |
492d29ea PA |
481 | gdb_assert (val == NULL); |
482 | ||
483 | TRY | |
e18b2753 | 484 | { |
63e43d3a | 485 | val = read_var_value (sym, NULL, frame); |
e18b2753 | 486 | } |
492d29ea | 487 | CATCH (except, RETURN_MASK_ERROR) |
e18b2753 | 488 | { |
224c3ddb | 489 | val_error = (char *) alloca (strlen (except.message) + 1); |
e18b2753 JK |
490 | strcpy (val_error, except.message); |
491 | } | |
492d29ea | 492 | END_CATCH |
e18b2753 JK |
493 | } |
494 | if (print_entry_values == print_entry_values_only | |
495 | || print_entry_values == print_entry_values_both | |
496 | || (print_entry_values == print_entry_values_preferred | |
497 | && (!val || value_optimized_out (val)))) | |
1ed8d800 YQ |
498 | { |
499 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
500 | entryval_error = NULL; | |
501 | } | |
93d86cef | 502 | } |
e18b2753 JK |
503 | if ((print_entry_values == print_entry_values_compact |
504 | || print_entry_values == print_entry_values_if_needed | |
505 | || print_entry_values == print_entry_values_preferred) | |
506 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 507 | { |
e18b2753 JK |
508 | val = NULL; |
509 | val_error = NULL; | |
93d86cef JK |
510 | } |
511 | ||
512 | argp->sym = sym; | |
513 | argp->val = val; | |
514 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
515 | if (!val && !val_error) |
516 | argp->entry_kind = print_entry_values_only; | |
517 | else if ((print_entry_values == print_entry_values_compact | |
518 | || print_entry_values == print_entry_values_default) && val_equal) | |
519 | { | |
520 | argp->entry_kind = print_entry_values_compact; | |
521 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
522 | } | |
523 | else | |
524 | argp->entry_kind = print_entry_values_no; | |
525 | ||
526 | entryargp->sym = sym; | |
527 | entryargp->val = entryval; | |
528 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
529 | if (!entryval && !entryval_error) | |
530 | entryargp->entry_kind = print_entry_values_no; | |
531 | else | |
532 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
533 | } |
534 | ||
033a42c2 MK |
535 | /* Print the arguments of frame FRAME on STREAM, given the function |
536 | FUNC running in that frame (as a symbol), where NUM is the number | |
537 | of arguments according to the stack frame (or -1 if the number of | |
538 | arguments is unknown). */ | |
8d3b0994 | 539 | |
e3168615 | 540 | /* Note that currently the "number of arguments according to the |
033a42c2 | 541 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 542 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
543 | |
544 | static void | |
033a42c2 MK |
545 | print_frame_args (struct symbol *func, struct frame_info *frame, |
546 | int num, struct ui_file *stream) | |
8d3b0994 | 547 | { |
79a45e25 | 548 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 549 | int first = 1; |
8d3b0994 | 550 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
551 | at the highest offset, or -1 if we haven't come to a stack |
552 | argument yet. */ | |
8d3b0994 | 553 | long highest_offset = -1; |
8d3b0994 AC |
554 | /* Number of ints of arguments that we have printed so far. */ |
555 | int args_printed = 0; | |
22e048c9 | 556 | struct cleanup *old_chain; |
f99d8bf4 | 557 | struct ui_file *stb; |
a6bac58e TT |
558 | /* True if we should print arguments, false otherwise. */ |
559 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 560 | |
f99d8bf4 PA |
561 | stb = mem_fileopen (); |
562 | old_chain = make_cleanup_ui_file_delete (stb); | |
8d3b0994 AC |
563 | |
564 | if (func) | |
565 | { | |
3977b71f | 566 | const struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 567 | struct block_iterator iter; |
033a42c2 | 568 | struct symbol *sym; |
8d3b0994 | 569 | |
de4f826b | 570 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 571 | { |
e18b2753 | 572 | struct frame_arg arg, entryarg; |
93d86cef | 573 | |
8d3b0994 AC |
574 | QUIT; |
575 | ||
576 | /* Keep track of the highest stack argument offset seen, and | |
577 | skip over any kinds of symbols we don't care about. */ | |
578 | ||
2a2d4dc3 AS |
579 | if (!SYMBOL_IS_ARGUMENT (sym)) |
580 | continue; | |
581 | ||
8d3b0994 AC |
582 | switch (SYMBOL_CLASS (sym)) |
583 | { | |
584 | case LOC_ARG: | |
585 | case LOC_REF_ARG: | |
586 | { | |
587 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 588 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
589 | |
590 | /* Compute address of next argument by adding the size of | |
591 | this argument and rounding to an int boundary. */ | |
592 | current_offset = | |
593 | ((current_offset + arg_size + sizeof (int) - 1) | |
594 | & ~(sizeof (int) - 1)); | |
595 | ||
033a42c2 MK |
596 | /* If this is the highest offset seen yet, set |
597 | highest_offset. */ | |
8d3b0994 AC |
598 | if (highest_offset == -1 |
599 | || (current_offset > highest_offset)) | |
600 | highest_offset = current_offset; | |
601 | ||
033a42c2 MK |
602 | /* Add the number of ints we're about to print to |
603 | args_printed. */ | |
8d3b0994 AC |
604 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
605 | } | |
606 | ||
033a42c2 MK |
607 | /* We care about types of symbols, but don't need to |
608 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 609 | case LOC_REGISTER: |
8d3b0994 | 610 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
611 | case LOC_COMPUTED: |
612 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 613 | default: |
2a2d4dc3 | 614 | break; |
8d3b0994 AC |
615 | } |
616 | ||
617 | /* We have to look up the symbol because arguments can have | |
618 | two entries (one a parameter, one a local) and the one we | |
619 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 620 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
621 | small structure and gcc2 when the argument type is float |
622 | and it is passed as a double and converted to float by | |
623 | the prologue (in the latter case the type of the LOC_ARG | |
624 | symbol is double and the type of the LOC_LOCAL symbol is | |
625 | float). */ | |
033a42c2 MK |
626 | /* But if the parameter name is null, don't try it. Null |
627 | parameter names occur on the RS/6000, for traceback | |
628 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 629 | |
3567439c | 630 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
631 | { |
632 | struct symbol *nsym; | |
433759f7 | 633 | |
3567439c | 634 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
d12307c1 | 635 | b, VAR_DOMAIN, NULL).symbol; |
55765a25 | 636 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
637 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
638 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 639 | { |
033a42c2 MK |
640 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
641 | that it was passed on the stack and loaded into a | |
642 | register, or passed in a register and stored in a | |
643 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
644 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
645 | |
646 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
647 | |
648 | (1) Because find_saved_registers may be slow for | |
649 | remote debugging. | |
650 | ||
651 | (2) Because registers are often re-used and stack | |
652 | slots rarely (never?) are. Therefore using | |
653 | the stack slot is much less likely to print | |
654 | garbage. | |
8d3b0994 AC |
655 | |
656 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
657 | |
658 | (1) So that the backtrace prints the same value | |
659 | as "print foo". I see no compelling reason | |
660 | why this needs to be the case; having the | |
661 | backtrace print the value which was passed | |
662 | in, and "print foo" print the value as | |
663 | modified within the called function, makes | |
664 | perfect sense to me. | |
665 | ||
666 | Additional note: It might be nice if "info args" | |
667 | displayed both values. | |
668 | ||
669 | One more note: There is a case with SPARC | |
670 | structure passing where we need to use the | |
671 | LOC_REGISTER, but this is dealt with by creating | |
672 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
673 | |
674 | /* Leave sym (the LOC_ARG) alone. */ | |
675 | ; | |
676 | } | |
677 | else | |
678 | sym = nsym; | |
679 | } | |
680 | ||
681 | /* Print the current arg. */ | |
682 | if (!first) | |
683 | ui_out_text (uiout, ", "); | |
684 | ui_out_wrap_hint (uiout, " "); | |
685 | ||
93d86cef JK |
686 | if (!print_args) |
687 | { | |
688 | memset (&arg, 0, sizeof (arg)); | |
689 | arg.sym = sym; | |
e18b2753 JK |
690 | arg.entry_kind = print_entry_values_no; |
691 | memset (&entryarg, 0, sizeof (entryarg)); | |
692 | entryarg.sym = sym; | |
693 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
694 | } |
695 | else | |
e18b2753 | 696 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 697 | |
e18b2753 JK |
698 | if (arg.entry_kind != print_entry_values_only) |
699 | print_frame_arg (&arg); | |
700 | ||
701 | if (entryarg.entry_kind != print_entry_values_no) | |
702 | { | |
703 | if (arg.entry_kind != print_entry_values_only) | |
704 | { | |
705 | ui_out_text (uiout, ", "); | |
706 | ui_out_wrap_hint (uiout, " "); | |
707 | } | |
708 | ||
709 | print_frame_arg (&entryarg); | |
710 | } | |
8d3b0994 | 711 | |
93d86cef | 712 | xfree (arg.error); |
e18b2753 | 713 | xfree (entryarg.error); |
8d3b0994 AC |
714 | |
715 | first = 0; | |
716 | } | |
717 | } | |
718 | ||
719 | /* Don't print nameless args in situations where we don't know | |
720 | enough about the stack to find them. */ | |
721 | if (num != -1) | |
722 | { | |
723 | long start; | |
724 | ||
725 | if (highest_offset == -1) | |
7500260a | 726 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
727 | else |
728 | start = highest_offset; | |
729 | ||
033a42c2 | 730 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
731 | first, stream); |
732 | } | |
033a42c2 | 733 | |
8d3b0994 AC |
734 | do_cleanups (old_chain); |
735 | } | |
736 | ||
033a42c2 MK |
737 | /* Set the current source and line to the location given by frame |
738 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
739 | line is in the center of the next 'list'. */ | |
c789492a | 740 | |
7abfe014 | 741 | void |
5166082f | 742 | set_current_sal_from_frame (struct frame_info *frame) |
c789492a FL |
743 | { |
744 | struct symtab_and_line sal; | |
745 | ||
033a42c2 | 746 | find_frame_sal (frame, &sal); |
5166082f PA |
747 | if (sal.symtab != NULL) |
748 | set_current_source_symtab_and_line (&sal); | |
c789492a FL |
749 | } |
750 | ||
30c33a9f HZ |
751 | /* If ON, GDB will display disassembly of the next source line when |
752 | execution of the program being debugged stops. | |
481df73e HZ |
753 | If AUTO (which is the default), or there's no line info to determine |
754 | the source line of the next instruction, display disassembly of next | |
755 | instruction instead. */ | |
30c33a9f HZ |
756 | |
757 | static enum auto_boolean disassemble_next_line; | |
758 | ||
759 | static void | |
760 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
761 | struct cmd_list_element *c, | |
762 | const char *value) | |
763 | { | |
3e43a32a MS |
764 | fprintf_filtered (file, |
765 | _("Debugger's willingness to use " | |
766 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
767 | value); |
768 | } | |
769 | ||
30c33a9f HZ |
770 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
771 | because it will be broken by filter sometime. */ | |
772 | ||
773 | static void | |
13274fc3 UW |
774 | do_gdb_disassembly (struct gdbarch *gdbarch, |
775 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f | 776 | { |
30c33a9f | 777 | |
492d29ea | 778 | TRY |
30c33a9f | 779 | { |
79a45e25 PA |
780 | gdb_disassembly (gdbarch, current_uiout, 0, |
781 | DISASSEMBLY_RAW_INSN, how_many, | |
782 | low, high); | |
30c33a9f | 783 | } |
492d29ea | 784 | CATCH (exception, RETURN_MASK_ERROR) |
b1d288d3 JK |
785 | { |
786 | /* If an exception was thrown while doing the disassembly, print | |
787 | the error message, to give the user a clue of what happened. */ | |
788 | exception_print (gdb_stderr, exception); | |
789 | } | |
492d29ea | 790 | END_CATCH |
30c33a9f HZ |
791 | } |
792 | ||
033a42c2 | 793 | /* Print information about frame FRAME. The output is format according |
65aa373f | 794 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
795 | PRINT_WHAT is: |
796 | ||
797 | SRC_LINE: Print only source line. | |
798 | LOCATION: Print only location. | |
799 | LOC_AND_SRC: Print location and source line. | |
800 | ||
801 | Used in "where" output, and to emit breakpoint or step | |
802 | messages. */ | |
c906108c | 803 | |
7789c6f5 | 804 | void |
033a42c2 | 805 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
806 | enum print_what print_what, int print_args, |
807 | int set_current_sal) | |
c906108c | 808 | { |
5af949e3 | 809 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 810 | struct symtab_and_line sal; |
c5394b80 JM |
811 | int source_print; |
812 | int location_print; | |
79a45e25 | 813 | struct ui_out *uiout = current_uiout; |
c906108c | 814 | |
033a42c2 | 815 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
816 | || get_frame_type (frame) == SIGTRAMP_FRAME |
817 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 818 | { |
075559bc AC |
819 | struct cleanup *uiout_cleanup |
820 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 821 | |
033a42c2 | 822 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 823 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 824 | |
c906108c | 825 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 826 | to list for this frame. */ |
0faf0076 | 827 | if (print_level) |
52c6a6ac JJ |
828 | { |
829 | ui_out_text (uiout, "#"); | |
0faf0076 | 830 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 831 | frame_relative_level (frame)); |
52c6a6ac | 832 | } |
075559bc | 833 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 834 | { |
075559bc | 835 | annotate_frame_address (); |
5af949e3 UW |
836 | ui_out_field_core_addr (uiout, "addr", |
837 | gdbarch, get_frame_pc (frame)); | |
075559bc | 838 | annotate_frame_address_end (); |
52c6a6ac | 839 | } |
6a3fe0a4 | 840 | |
033a42c2 | 841 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
842 | { |
843 | annotate_function_call (); | |
844 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
845 | } | |
033a42c2 | 846 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
847 | { |
848 | annotate_signal_handler_caller (); | |
849 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
850 | } | |
36f15f55 UW |
851 | else if (get_frame_type (frame) == ARCH_FRAME) |
852 | { | |
853 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
854 | } | |
075559bc | 855 | ui_out_text (uiout, "\n"); |
c906108c | 856 | annotate_frame_end (); |
075559bc | 857 | |
433e77fa HZ |
858 | /* If disassemble-next-line is set to auto or on output the next |
859 | instruction. */ | |
860 | if (disassemble_next_line == AUTO_BOOLEAN_AUTO | |
861 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
862 | do_gdb_disassembly (get_frame_arch (frame), 1, | |
863 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
864 | ||
075559bc | 865 | do_cleanups (uiout_cleanup); |
c906108c SS |
866 | return; |
867 | } | |
868 | ||
033a42c2 MK |
869 | /* If FRAME is not the innermost frame, that normally means that |
870 | FRAME->pc points to *after* the call instruction, and we want to | |
871 | get the line containing the call, never the next line. But if | |
872 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
873 | next frame was not entered as the result of a call, and we want | |
874 | to get the line containing FRAME->pc. */ | |
875 | find_frame_sal (frame, &sal); | |
c906108c | 876 | |
0faf0076 AC |
877 | location_print = (print_what == LOCATION |
878 | || print_what == LOC_AND_ADDRESS | |
879 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
880 | |
881 | if (location_print || !sal.symtab) | |
033a42c2 | 882 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 883 | |
0faf0076 | 884 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 885 | |
30c33a9f HZ |
886 | /* If disassemble-next-line is set to auto or on and doesn't have |
887 | the line debug messages for $pc, output the next instruction. */ | |
888 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
889 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
890 | && source_print && !sal.symtab) | |
13274fc3 UW |
891 | do_gdb_disassembly (get_frame_arch (frame), 1, |
892 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 893 | |
c5394b80 JM |
894 | if (source_print && sal.symtab) |
895 | { | |
896 | int done = 0; | |
0faf0076 | 897 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 898 | && frame_show_address (frame, sal)); |
c5394b80 JM |
899 | |
900 | if (annotation_level) | |
901 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 902 | get_frame_pc (frame)); |
c5394b80 JM |
903 | if (!done) |
904 | { | |
9a4105ab | 905 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
906 | deprecated_print_frame_info_listing_hook (sal.symtab, |
907 | sal.line, | |
908 | sal.line + 1, 0); | |
ba4bbdcb | 909 | else |
c5394b80 | 910 | { |
79a45b7d | 911 | struct value_print_options opts; |
433759f7 | 912 | |
79a45b7d | 913 | get_user_print_options (&opts); |
ba4bbdcb | 914 | /* We used to do this earlier, but that is clearly |
c378eb4e | 915 | wrong. This function is used by many different |
ba4bbdcb KS |
916 | parts of gdb, including normal_stop in infrun.c, |
917 | which uses this to print out the current PC | |
918 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
919 | line. Only the command line really wants this |
920 | behavior. Other UIs probably would like the | |
cbd3c883 | 921 | ability to decide for themselves if it is desired. */ |
79a45b7d | 922 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 923 | { |
5af949e3 UW |
924 | ui_out_field_core_addr (uiout, "addr", |
925 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 926 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
927 | } |
928 | ||
929 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 930 | } |
c5394b80 | 931 | } |
30c33a9f HZ |
932 | |
933 | /* If disassemble-next-line is set to on and there is line debug | |
934 | messages, output assembly codes for next line. */ | |
935 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 936 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
937 | } |
938 | ||
08d72866 | 939 | if (set_current_sal) |
e3eebbd7 PA |
940 | { |
941 | CORE_ADDR pc; | |
942 | ||
943 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 944 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 945 | else |
1bfeeb0f | 946 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 947 | } |
c5394b80 JM |
948 | |
949 | annotate_frame_end (); | |
950 | ||
951 | gdb_flush (gdb_stdout); | |
952 | } | |
953 | ||
1bfeeb0f JL |
954 | /* Remember the last symtab and line we displayed, which we use e.g. |
955 | * as the place to put a breakpoint when the `break' command is | |
956 | * invoked with no arguments. */ | |
957 | ||
958 | static void | |
959 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
960 | CORE_ADDR addr, struct symtab *symtab, | |
961 | int line) | |
962 | { | |
963 | last_displayed_sal_valid = valid; | |
964 | last_displayed_pspace = pspace; | |
965 | last_displayed_addr = addr; | |
966 | last_displayed_symtab = symtab; | |
967 | last_displayed_line = line; | |
4cb6da1c AR |
968 | if (valid && pspace == NULL) |
969 | { | |
4cb6da1c | 970 | clear_last_displayed_sal (); |
e36930bb PA |
971 | internal_error (__FILE__, __LINE__, |
972 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 973 | } |
1bfeeb0f JL |
974 | } |
975 | ||
976 | /* Forget the last sal we displayed. */ | |
977 | ||
978 | void | |
979 | clear_last_displayed_sal (void) | |
980 | { | |
981 | last_displayed_sal_valid = 0; | |
982 | last_displayed_pspace = 0; | |
983 | last_displayed_addr = 0; | |
984 | last_displayed_symtab = 0; | |
985 | last_displayed_line = 0; | |
986 | } | |
987 | ||
988 | /* Is our record of the last sal we displayed valid? If not, | |
989 | * the get_last_displayed_* functions will return NULL or 0, as | |
990 | * appropriate. */ | |
991 | ||
992 | int | |
993 | last_displayed_sal_is_valid (void) | |
994 | { | |
995 | return last_displayed_sal_valid; | |
996 | } | |
997 | ||
998 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
999 | ||
1000 | struct program_space * | |
1001 | get_last_displayed_pspace (void) | |
1002 | { | |
1003 | if (last_displayed_sal_valid) | |
1004 | return last_displayed_pspace; | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | /* Get the address of the last sal we displayed, if it's valid. */ | |
1009 | ||
1010 | CORE_ADDR | |
1011 | get_last_displayed_addr (void) | |
1012 | { | |
1013 | if (last_displayed_sal_valid) | |
1014 | return last_displayed_addr; | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
1019 | ||
1020 | struct symtab* | |
1021 | get_last_displayed_symtab (void) | |
1022 | { | |
1023 | if (last_displayed_sal_valid) | |
1024 | return last_displayed_symtab; | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1029 | ||
1030 | int | |
1031 | get_last_displayed_line (void) | |
1032 | { | |
1033 | if (last_displayed_sal_valid) | |
1034 | return last_displayed_line; | |
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | /* Get the last sal we displayed, if it's valid. */ | |
1039 | ||
1040 | void | |
1041 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1042 | { | |
1043 | if (last_displayed_sal_valid) | |
1044 | { | |
1045 | sal->pspace = last_displayed_pspace; | |
1046 | sal->pc = last_displayed_addr; | |
1047 | sal->symtab = last_displayed_symtab; | |
1048 | sal->line = last_displayed_line; | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | sal->pspace = 0; | |
1053 | sal->pc = 0; | |
1054 | sal->symtab = 0; | |
1055 | sal->line = 0; | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | ||
e9e07ba6 | 1060 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1061 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1062 | |
f8f6f20b | 1063 | void |
55b87a52 | 1064 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1065 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1066 | { |
1067 | struct symbol *func; | |
8b93c638 | 1068 | |
f8f6f20b TJB |
1069 | *funname = NULL; |
1070 | *funlang = language_unknown; | |
e9e07ba6 JK |
1071 | if (funcp) |
1072 | *funcp = NULL; | |
c5394b80 | 1073 | |
edb3359d | 1074 | func = get_frame_function (frame); |
c906108c SS |
1075 | if (func) |
1076 | { | |
1077 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1078 | function (when we are in the first function in a file which |
1079 | is compiled without debugging symbols, the previous function | |
1080 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1081 | that is supposed to tell us where the file with debugging |
1082 | symbols ends has been truncated by ar because it is longer | |
1083 | than 15 characters). This also occurs if the user uses asm() | |
1084 | to create a function but not stabs for it (in a file compiled | |
1085 | with -g). | |
c5aa993b JM |
1086 | |
1087 | So look in the minimal symbol tables as well, and if it comes | |
1088 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1089 | I don't think this can ever cause any problems; there |
1090 | shouldn't be any minimal symbols in the middle of a function; | |
1091 | if this is ever changed many parts of GDB will need to be | |
1092 | changed (and we'll create a find_pc_minimal_function or some | |
1093 | such). */ | |
1094 | ||
7cbd4a93 | 1095 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1096 | |
1097 | /* Don't attempt to do this for inlined functions, which do not | |
1098 | have a corresponding minimal symbol. */ | |
1099 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1100 | msymbol | |
1101 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1102 | else |
1103 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1104 | |
7cbd4a93 | 1105 | if (msymbol.minsym != NULL |
77e371c0 | 1106 | && (BMSYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1107 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1108 | { | |
c906108c SS |
1109 | /* We also don't know anything about the function besides |
1110 | its address and name. */ | |
1111 | func = 0; | |
efd66ac6 TT |
1112 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1113 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1114 | } |
1115 | else | |
1116 | { | |
d10153cf TT |
1117 | const char *print_name = SYMBOL_PRINT_NAME (func); |
1118 | ||
f8f6f20b | 1119 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1120 | if (funcp) |
1121 | *funcp = func; | |
f8f6f20b | 1122 | if (*funlang == language_cplus) |
c5aa993b | 1123 | { |
033a42c2 MK |
1124 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1125 | to display the demangled name that we already have | |
1126 | stored in the symbol table, but we stored a version | |
1127 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1128 | display parameters. So remove the parameters. */ |
d10153cf | 1129 | char *func_only = cp_remove_params (print_name); |
433759f7 | 1130 | |
3567439c | 1131 | if (func_only) |
d10153cf | 1132 | *funname = func_only; |
c5aa993b | 1133 | } |
d10153cf TT |
1134 | |
1135 | /* If we didn't hit the C++ case above, set *funname here. | |
1136 | This approach is taken to avoid having to install a | |
1137 | cleanup in case cp_remove_params can throw. */ | |
1138 | if (*funname == NULL) | |
1139 | *funname = xstrdup (print_name); | |
c906108c SS |
1140 | } |
1141 | } | |
1142 | else | |
1143 | { | |
7cbd4a93 | 1144 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1145 | CORE_ADDR pc; |
033a42c2 | 1146 | |
e3eebbd7 PA |
1147 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1148 | return; | |
1149 | ||
1150 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1151 | if (msymbol.minsym != NULL) |
c906108c | 1152 | { |
efd66ac6 TT |
1153 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1154 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1155 | } |
1156 | } | |
f8f6f20b TJB |
1157 | } |
1158 | ||
1159 | static void | |
1160 | print_frame (struct frame_info *frame, int print_level, | |
1161 | enum print_what print_what, int print_args, | |
1162 | struct symtab_and_line sal) | |
1163 | { | |
5af949e3 | 1164 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1165 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1166 | char *funname = NULL; |
f8f6f20b | 1167 | enum language funlang = language_unknown; |
f99d8bf4 | 1168 | struct ui_file *stb; |
f8f6f20b TJB |
1169 | struct cleanup *old_chain, *list_chain; |
1170 | struct value_print_options opts; | |
e9e07ba6 | 1171 | struct symbol *func; |
e3eebbd7 PA |
1172 | CORE_ADDR pc = 0; |
1173 | int pc_p; | |
1174 | ||
1175 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1176 | |
f99d8bf4 PA |
1177 | stb = mem_fileopen (); |
1178 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1179 | |
e9e07ba6 | 1180 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1181 | make_cleanup (xfree, funname); |
c906108c | 1182 | |
033a42c2 | 1183 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1184 | gdbarch, pc); |
c5394b80 | 1185 | |
666547aa | 1186 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1187 | |
0faf0076 | 1188 | if (print_level) |
8b93c638 | 1189 | { |
8b93c638 | 1190 | ui_out_text (uiout, "#"); |
0faf0076 | 1191 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1192 | frame_relative_level (frame)); |
8b93c638 | 1193 | } |
79a45b7d TT |
1194 | get_user_print_options (&opts); |
1195 | if (opts.addressprint) | |
e3eebbd7 PA |
1196 | if (!sal.symtab |
1197 | || frame_show_address (frame, sal) | |
0faf0076 | 1198 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1199 | { |
1200 | annotate_frame_address (); | |
e3eebbd7 PA |
1201 | if (pc_p) |
1202 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1203 | else | |
1204 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1205 | annotate_frame_address_end (); |
1206 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1207 | } |
1208 | annotate_frame_function_name (); | |
f99d8bf4 | 1209 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1210 | funlang, DMGL_ANSI); |
8b93c638 JM |
1211 | ui_out_field_stream (uiout, "func", stb); |
1212 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1213 | annotate_frame_args (); |
1214 | ||
8b93c638 | 1215 | ui_out_text (uiout, " ("); |
0faf0076 | 1216 | if (print_args) |
c906108c | 1217 | { |
311b5970 JK |
1218 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1219 | int numargs; | |
d493eb33 | 1220 | struct cleanup *args_list_chain; |
433759f7 | 1221 | |
311b5970 JK |
1222 | if (gdbarch_frame_num_args_p (gdbarch)) |
1223 | { | |
1224 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1225 | gdb_assert (numargs >= 0); | |
1226 | } | |
1227 | else | |
1228 | numargs = -1; | |
1229 | ||
68c81b54 | 1230 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
492d29ea | 1231 | TRY |
311b5970 JK |
1232 | { |
1233 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1234 | } | |
492d29ea PA |
1235 | CATCH (e, RETURN_MASK_ERROR) |
1236 | { | |
1237 | } | |
1238 | END_CATCH | |
1239 | ||
c378eb4e | 1240 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1241 | will have " that will not be properly escaped. */ |
666547aa | 1242 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1243 | do_cleanups (args_list_chain); |
c5394b80 JM |
1244 | QUIT; |
1245 | } | |
8b93c638 | 1246 | ui_out_text (uiout, ")"); |
4e04028d | 1247 | if (sal.symtab) |
c5394b80 | 1248 | { |
1b56eb55 JK |
1249 | const char *filename_display; |
1250 | ||
1251 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1252 | annotate_frame_source_begin (); |
8b93c638 JM |
1253 | ui_out_wrap_hint (uiout, " "); |
1254 | ui_out_text (uiout, " at "); | |
1255 | annotate_frame_source_file (); | |
1b56eb55 | 1256 | ui_out_field_string (uiout, "file", filename_display); |
76ff342d DJ |
1257 | if (ui_out_is_mi_like_p (uiout)) |
1258 | { | |
1259 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1260 | |
f35a17b5 | 1261 | ui_out_field_string (uiout, "fullname", fullname); |
76ff342d | 1262 | } |
8b93c638 JM |
1263 | annotate_frame_source_file_end (); |
1264 | ui_out_text (uiout, ":"); | |
1265 | annotate_frame_source_line (); | |
1266 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1267 | annotate_frame_source_end (); |
1268 | } | |
c906108c | 1269 | |
4e04028d | 1270 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1271 | { |
6c95b8df PA |
1272 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1273 | get_frame_pc (frame)); | |
4d1eb6b4 | 1274 | |
c5394b80 | 1275 | if (lib) |
c906108c | 1276 | { |
c5394b80 | 1277 | annotate_frame_where (); |
8b93c638 JM |
1278 | ui_out_wrap_hint (uiout, " "); |
1279 | ui_out_text (uiout, " from "); | |
1280 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1281 | } |
c906108c | 1282 | } |
e514a9d6 | 1283 | |
666547aa | 1284 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1285 | do_cleanups (list_chain); |
8b93c638 JM |
1286 | ui_out_text (uiout, "\n"); |
1287 | do_cleanups (old_chain); | |
c906108c SS |
1288 | } |
1289 | \f | |
c5aa993b | 1290 | |
a0d34a39 AB |
1291 | /* Read a frame specification in whatever the appropriate format is from |
1292 | FRAME_EXP. Call error() if the specification is in any way invalid (so | |
34f81801 SM |
1293 | this function never returns NULL). When SELECTED_FRAME_P is non-NULL |
1294 | set its target to indicate that the default selected frame was used. */ | |
c906108c | 1295 | |
1c8831c5 | 1296 | static struct frame_info * |
a0d34a39 | 1297 | parse_frame_specification (const char *frame_exp, int *selected_frame_p) |
c906108c | 1298 | { |
1c8831c5 AC |
1299 | int numargs; |
1300 | struct value *args[4]; | |
1301 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1302 | |
1c8831c5 AC |
1303 | if (frame_exp == NULL) |
1304 | numargs = 0; | |
1305 | else | |
c906108c | 1306 | { |
1c8831c5 AC |
1307 | numargs = 0; |
1308 | while (1) | |
c906108c | 1309 | { |
1c8831c5 AC |
1310 | char *addr_string; |
1311 | struct cleanup *cleanup; | |
1312 | const char *p; | |
1313 | ||
1314 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1315 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1316 | if (!*frame_exp) |
1317 | break; | |
c906108c | 1318 | |
1c8831c5 AC |
1319 | /* Parse the argument, extract it, save it. */ |
1320 | for (p = frame_exp; | |
8d3fea16 | 1321 | *p && !ISSPACE (*p); |
1c8831c5 AC |
1322 | p++); |
1323 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1324 | frame_exp = p; |
1c8831c5 AC |
1325 | cleanup = make_cleanup (xfree, addr_string); |
1326 | ||
1327 | /* NOTE: Parse and evaluate expression, but do not use | |
1328 | functions such as parse_and_eval_long or | |
1329 | parse_and_eval_address to also extract the value. | |
1330 | Instead value_as_long and value_as_address are used. | |
1331 | This avoids problems with expressions that contain | |
1332 | side-effects. */ | |
1333 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1334 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1335 | args[numargs++] = parse_and_eval (addr_string); |
1336 | ||
1337 | do_cleanups (cleanup); | |
c906108c SS |
1338 | } |
1339 | } | |
1340 | ||
1c8831c5 AC |
1341 | /* If no args, default to the selected frame. */ |
1342 | if (numargs == 0) | |
c906108c | 1343 | { |
1c8831c5 AC |
1344 | if (selected_frame_p != NULL) |
1345 | (*selected_frame_p) = 1; | |
a0d34a39 | 1346 | return get_selected_frame (_("No stack.")); |
1c8831c5 | 1347 | } |
c906108c | 1348 | |
1c8831c5 AC |
1349 | /* None of the remaining use the selected frame. */ |
1350 | if (selected_frame_p != NULL) | |
98f276a0 | 1351 | (*selected_frame_p) = 0; |
c906108c | 1352 | |
1c8831c5 AC |
1353 | /* Assume the single arg[0] is an integer, and try using that to |
1354 | select a frame relative to current. */ | |
1355 | if (numargs == 1) | |
1356 | { | |
1357 | struct frame_info *fid; | |
1358 | int level = value_as_long (args[0]); | |
433759f7 | 1359 | |
1c8831c5 AC |
1360 | fid = find_relative_frame (get_current_frame (), &level); |
1361 | if (level == 0) | |
c378eb4e | 1362 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1363 | return fid; |
1364 | } | |
c906108c | 1365 | |
1c8831c5 AC |
1366 | /* Convert each value into a corresponding address. */ |
1367 | { | |
1368 | int i; | |
433759f7 | 1369 | |
1c8831c5 | 1370 | for (i = 0; i < numargs; i++) |
1e275f79 | 1371 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1372 | } |
c5aa993b | 1373 | |
1c8831c5 AC |
1374 | /* Assume that the single arg[0] is an address, use that to identify |
1375 | a frame with a matching ID. Should this also accept stack/pc or | |
1376 | stack/pc/special. */ | |
1377 | if (numargs == 1) | |
1378 | { | |
1379 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1380 | struct frame_info *fid; | |
1381 | ||
1c8831c5 AC |
1382 | /* If (s)he specifies the frame with an address, he deserves |
1383 | what (s)he gets. Still, give the highest one that matches. | |
1384 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1385 | know). */ | |
1386 | for (fid = get_current_frame (); | |
1387 | fid != NULL; | |
1388 | fid = get_prev_frame (fid)) | |
1389 | { | |
1390 | if (frame_id_eq (id, get_frame_id (fid))) | |
1391 | { | |
c7ce8faa DJ |
1392 | struct frame_info *prev_frame; |
1393 | ||
1394 | while (1) | |
1395 | { | |
1396 | prev_frame = get_prev_frame (fid); | |
1397 | if (!prev_frame | |
1398 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1399 | break; | |
1400 | fid = prev_frame; | |
1401 | } | |
1c8831c5 AC |
1402 | return fid; |
1403 | } | |
1404 | } | |
c906108c SS |
1405 | } |
1406 | ||
1c8831c5 AC |
1407 | /* We couldn't identify the frame as an existing frame, but |
1408 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1409 | if (numargs == 1) |
1410 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1411 | else if (numargs == 2) |
1412 | return create_new_frame (addrs[0], addrs[1]); | |
1413 | else | |
8a3fe4f8 | 1414 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1415 | } |
1416 | ||
033a42c2 MK |
1417 | /* Print verbosely the selected frame or the frame at address |
1418 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1419 | |
1420 | static void | |
fba45db2 | 1421 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1422 | { |
1423 | struct frame_info *fi; | |
1424 | struct symtab_and_line sal; | |
1425 | struct symbol *func; | |
1426 | struct symtab *s; | |
1427 | struct frame_info *calling_frame_info; | |
167e4384 | 1428 | int numregs; |
0d5cff50 | 1429 | const char *funname = 0; |
c906108c | 1430 | enum language funlang = language_unknown; |
82de1e5b | 1431 | const char *pc_regname; |
1c8831c5 | 1432 | int selected_frame_p; |
7500260a | 1433 | struct gdbarch *gdbarch; |
3567439c | 1434 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1435 | CORE_ADDR frame_pc; |
1436 | int frame_pc_p; | |
e5e6f788 YQ |
1437 | /* Initialize it to avoid "may be used uninitialized" warning. */ |
1438 | CORE_ADDR caller_pc = 0; | |
492d29ea | 1439 | int caller_pc_p = 0; |
c906108c | 1440 | |
a0d34a39 | 1441 | fi = parse_frame_specification (addr_exp, &selected_frame_p); |
12368003 | 1442 | gdbarch = get_frame_arch (fi); |
c906108c | 1443 | |
82de1e5b AC |
1444 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1445 | is not a good name. */ | |
12368003 | 1446 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1447 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1448 | easily not match that of the internal value returned by |
1449 | get_frame_pc(). */ | |
12368003 | 1450 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1451 | else |
3e8c568d | 1452 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1453 | architectures will often have a hardware register called "pc", |
1454 | and that register's value, again, can easily not match | |
1455 | get_frame_pc(). */ | |
1456 | pc_regname = "pc"; | |
1457 | ||
008f8f2e | 1458 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1459 | find_frame_sal (fi, &sal); |
c906108c | 1460 | func = get_frame_function (fi); |
008f8f2e | 1461 | s = sal.symtab; |
c906108c SS |
1462 | if (func) |
1463 | { | |
3567439c | 1464 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1465 | funlang = SYMBOL_LANGUAGE (func); |
1466 | if (funlang == language_cplus) | |
1467 | { | |
3567439c DJ |
1468 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1469 | to display the demangled name that we already have | |
1470 | stored in the symbol table, but we stored a version | |
1471 | with DMGL_PARAMS turned on, and here we don't want to | |
1472 | display parameters. So remove the parameters. */ | |
1473 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1474 | |
3567439c DJ |
1475 | if (func_only) |
1476 | { | |
1477 | funname = func_only; | |
1478 | make_cleanup (xfree, func_only); | |
1479 | } | |
c5aa993b | 1480 | } |
c906108c | 1481 | } |
008f8f2e | 1482 | else if (frame_pc_p) |
c906108c | 1483 | { |
7cbd4a93 | 1484 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1485 | |
008f8f2e | 1486 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1487 | if (msymbol.minsym != NULL) |
c906108c | 1488 | { |
efd66ac6 TT |
1489 | funname = MSYMBOL_PRINT_NAME (msymbol.minsym); |
1490 | funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1491 | } |
1492 | } | |
1493 | calling_frame_info = get_prev_frame (fi); | |
1494 | ||
1c8831c5 | 1495 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1496 | { |
a3f17187 | 1497 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1498 | frame_relative_level (fi)); |
c906108c SS |
1499 | } |
1500 | else | |
1501 | { | |
a3f17187 | 1502 | printf_filtered (_("Stack frame at ")); |
c906108c | 1503 | } |
5af949e3 | 1504 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1505 | printf_filtered (":\n"); |
82de1e5b | 1506 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1507 | if (frame_pc_p) |
1508 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1509 | else | |
1510 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1511 | |
1512 | wrap_here (" "); | |
1513 | if (funname) | |
1514 | { | |
1515 | printf_filtered (" in "); | |
1516 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1517 | DMGL_ANSI | DMGL_PARAMS); | |
1518 | } | |
1519 | wrap_here (" "); | |
1520 | if (sal.symtab) | |
05cba821 JK |
1521 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1522 | sal.line); | |
c906108c SS |
1523 | puts_filtered ("; "); |
1524 | wrap_here (" "); | |
782d47df PA |
1525 | printf_filtered ("saved %s = ", pc_regname); |
1526 | ||
a038fa3e | 1527 | if (!frame_id_p (frame_unwind_caller_id (fi))) |
c620c3e4 | 1528 | val_print_not_saved (gdb_stdout); |
a038fa3e | 1529 | else |
782d47df | 1530 | { |
a038fa3e | 1531 | TRY |
782d47df | 1532 | { |
a038fa3e MM |
1533 | caller_pc = frame_unwind_caller_pc (fi); |
1534 | caller_pc_p = 1; | |
782d47df | 1535 | } |
a038fa3e MM |
1536 | CATCH (ex, RETURN_MASK_ERROR) |
1537 | { | |
1538 | switch (ex.error) | |
1539 | { | |
1540 | case NOT_AVAILABLE_ERROR: | |
1541 | val_print_unavailable (gdb_stdout); | |
1542 | break; | |
1543 | case OPTIMIZED_OUT_ERROR: | |
1544 | val_print_not_saved (gdb_stdout); | |
1545 | break; | |
1546 | default: | |
1547 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1548 | break; | |
1549 | } | |
1550 | } | |
1551 | END_CATCH | |
782d47df | 1552 | } |
492d29ea PA |
1553 | |
1554 | if (caller_pc_p) | |
782d47df | 1555 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
c906108c SS |
1556 | printf_filtered ("\n"); |
1557 | ||
55feb689 DJ |
1558 | if (calling_frame_info == NULL) |
1559 | { | |
1560 | enum unwind_stop_reason reason; | |
1561 | ||
1562 | reason = get_frame_unwind_stop_reason (fi); | |
1563 | if (reason != UNWIND_NO_REASON) | |
1564 | printf_filtered (_(" Outermost frame: %s\n"), | |
53e8a631 | 1565 | frame_stop_reason_string (fi)); |
55feb689 | 1566 | } |
111c6489 JK |
1567 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1568 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1569 | else if (get_frame_type (fi) == INLINE_FRAME) |
1570 | printf_filtered (" inlined into frame %d", | |
1571 | frame_relative_level (get_prev_frame (fi))); | |
1572 | else | |
c906108c SS |
1573 | { |
1574 | printf_filtered (" called by frame at "); | |
5af949e3 | 1575 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1576 | gdb_stdout); |
c906108c | 1577 | } |
75e3c1f9 | 1578 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1579 | puts_filtered (","); |
1580 | wrap_here (" "); | |
75e3c1f9 | 1581 | if (get_next_frame (fi)) |
c906108c SS |
1582 | { |
1583 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1584 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1585 | gdb_stdout); |
c906108c | 1586 | } |
75e3c1f9 | 1587 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1588 | puts_filtered ("\n"); |
55feb689 | 1589 | |
c906108c | 1590 | if (s) |
1058bca7 AC |
1591 | printf_filtered (" source language %s.\n", |
1592 | language_str (s->language)); | |
c906108c | 1593 | |
c906108c SS |
1594 | { |
1595 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1596 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1597 | /* Number of args for this frame, or -1 if unknown. */ |
1598 | int numargs; | |
1599 | ||
1600 | if (arg_list == 0) | |
1601 | printf_filtered (" Arglist at unknown address.\n"); | |
1602 | else | |
1603 | { | |
1604 | printf_filtered (" Arglist at "); | |
5af949e3 | 1605 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1606 | printf_filtered (","); |
1607 | ||
7500260a | 1608 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1609 | { |
1610 | numargs = -1; | |
1611 | puts_filtered (" args: "); | |
1612 | } | |
c906108c | 1613 | else |
983a287a | 1614 | { |
7500260a | 1615 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1616 | gdb_assert (numargs >= 0); |
1617 | if (numargs == 0) | |
1618 | puts_filtered (" no args."); | |
1619 | else if (numargs == 1) | |
1620 | puts_filtered (" 1 arg: "); | |
1621 | else | |
1622 | printf_filtered (" %d args: ", numargs); | |
1623 | } | |
c906108c SS |
1624 | print_frame_args (func, fi, numargs, gdb_stdout); |
1625 | puts_filtered ("\n"); | |
1626 | } | |
1627 | } | |
1628 | { | |
1629 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1630 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1631 | |
1632 | if (arg_list == 0) | |
1633 | printf_filtered (" Locals at unknown address,"); | |
1634 | else | |
1635 | { | |
1636 | printf_filtered (" Locals at "); | |
5af949e3 | 1637 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1638 | printf_filtered (","); |
1639 | } | |
1640 | } | |
1641 | ||
4f460812 AC |
1642 | /* Print as much information as possible on the location of all the |
1643 | registers. */ | |
1644 | { | |
1645 | enum lval_type lval; | |
1646 | int optimized; | |
0fdb4f18 | 1647 | int unavailable; |
4f460812 AC |
1648 | CORE_ADDR addr; |
1649 | int realnum; | |
1650 | int count; | |
1651 | int i; | |
1652 | int need_nl = 1; | |
1653 | ||
1654 | /* The sp is special; what's displayed isn't the save address, but | |
1655 | the value of the previous frame's sp. This is a legacy thing, | |
1656 | at one stage the frame cached the previous frame's SP instead | |
1657 | of its address, hence it was easiest to just display the cached | |
1658 | value. */ | |
7500260a | 1659 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1660 | { |
1661 | /* Find out the location of the saved stack pointer with out | |
1662 | actually evaluating it. */ | |
7500260a | 1663 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1664 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1665 | &realnum, NULL); |
0fdb4f18 | 1666 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1667 | { |
e17a4113 UW |
1668 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1669 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1670 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1671 | CORE_ADDR sp; |
433759f7 | 1672 | |
7500260a | 1673 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1674 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1675 | &realnum, value); |
af1342ab AC |
1676 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1677 | stack pointer was packed as an unsigned integer. That | |
1678 | may or may not be valid. */ | |
e17a4113 | 1679 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1680 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1681 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1682 | printf_filtered ("\n"); |
1683 | need_nl = 0; | |
c906108c | 1684 | } |
0fdb4f18 | 1685 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1686 | { |
1687 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1688 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1689 | printf_filtered ("\n"); |
1690 | need_nl = 0; | |
1691 | } | |
0fdb4f18 | 1692 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1693 | { |
1694 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1695 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1696 | need_nl = 0; |
1697 | } | |
1698 | /* else keep quiet. */ | |
1699 | } | |
1700 | ||
1701 | count = 0; | |
7500260a UW |
1702 | numregs = gdbarch_num_regs (gdbarch) |
1703 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1704 | for (i = 0; i < numregs; i++) |
7500260a UW |
1705 | if (i != gdbarch_sp_regnum (gdbarch) |
1706 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1707 | { |
1708 | /* Find out the location of the saved register without | |
1709 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1710 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1711 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1712 | /* For moment, only display registers that were saved on the |
1713 | stack. */ | |
0fdb4f18 | 1714 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1715 | { |
1716 | if (count == 0) | |
1717 | puts_filtered (" Saved registers:\n "); | |
1718 | else | |
1719 | puts_filtered (","); | |
1720 | wrap_here (" "); | |
c9f4d572 | 1721 | printf_filtered (" %s at ", |
7500260a | 1722 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1723 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1724 | count++; |
1725 | } | |
1726 | } | |
1727 | if (count || need_nl) | |
c906108c | 1728 | puts_filtered ("\n"); |
4f460812 | 1729 | } |
3567439c DJ |
1730 | |
1731 | do_cleanups (back_to); | |
c906108c SS |
1732 | } |
1733 | ||
033a42c2 MK |
1734 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1735 | frames. */ | |
c906108c SS |
1736 | |
1737 | static void | |
1e611234 PM |
1738 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1739 | int from_tty) | |
c906108c SS |
1740 | { |
1741 | struct frame_info *fi; | |
52f0bd74 AC |
1742 | int count; |
1743 | int i; | |
1744 | struct frame_info *trailing; | |
1e611234 | 1745 | int trailing_level, py_start = 0, py_end = 0; |
6dddc817 | 1746 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
c906108c SS |
1747 | |
1748 | if (!target_has_stack) | |
8a3fe4f8 | 1749 | error (_("No stack.")); |
c906108c | 1750 | |
033a42c2 MK |
1751 | /* The following code must do two things. First, it must set the |
1752 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1753 | printing. Second, it must set the variable count to the number |
1754 | of frames which we should print, or -1 if all of them. */ | |
1755 | trailing = get_current_frame (); | |
d082b2bb | 1756 | |
c906108c SS |
1757 | trailing_level = 0; |
1758 | if (count_exp) | |
1759 | { | |
bb518678 | 1760 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1761 | if (count < 0) |
1762 | { | |
1763 | struct frame_info *current; | |
1764 | ||
1e611234 | 1765 | py_start = count; |
c906108c SS |
1766 | count = -count; |
1767 | ||
1768 | current = trailing; | |
1769 | while (current && count--) | |
1770 | { | |
1771 | QUIT; | |
1772 | current = get_prev_frame (current); | |
1773 | } | |
c5aa993b | 1774 | |
033a42c2 MK |
1775 | /* Will stop when CURRENT reaches the top of the stack. |
1776 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1777 | while (current) |
1778 | { | |
1779 | QUIT; | |
1780 | trailing = get_prev_frame (trailing); | |
1781 | current = get_prev_frame (current); | |
1782 | trailing_level++; | |
1783 | } | |
c5aa993b | 1784 | |
c906108c SS |
1785 | count = -1; |
1786 | } | |
1e611234 PM |
1787 | else |
1788 | { | |
1789 | py_start = 0; | |
1790 | py_end = count; | |
1791 | } | |
c906108c SS |
1792 | } |
1793 | else | |
1e611234 PM |
1794 | { |
1795 | py_end = -1; | |
1796 | count = -1; | |
1797 | } | |
c906108c SS |
1798 | |
1799 | if (info_verbose) | |
1800 | { | |
033a42c2 MK |
1801 | /* Read in symbols for all of the frames. Need to do this in a |
1802 | separate pass so that "Reading in symbols for xxx" messages | |
1803 | don't screw up the appearance of the backtrace. Also if | |
1804 | people have strong opinions against reading symbols for | |
c5aa993b | 1805 | backtrace this may have to be an option. */ |
c906108c | 1806 | i = count; |
033a42c2 | 1807 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1808 | { |
ccefe4c4 | 1809 | CORE_ADDR pc; |
433759f7 | 1810 | |
c906108c | 1811 | QUIT; |
ccefe4c4 | 1812 | pc = get_frame_address_in_block (fi); |
2097ae25 | 1813 | expand_symtab_containing_pc (pc, find_pc_mapped_section (pc)); |
c906108c SS |
1814 | } |
1815 | } | |
1816 | ||
1e611234 | 1817 | if (! no_filters) |
c906108c | 1818 | { |
1e611234 | 1819 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
6dddc817 | 1820 | enum ext_lang_frame_args arg_type; |
c906108c | 1821 | |
c906108c | 1822 | if (show_locals) |
1e611234 PM |
1823 | flags |= PRINT_LOCALS; |
1824 | ||
1825 | if (!strcmp (print_frame_arguments, "scalars")) | |
1826 | arg_type = CLI_SCALAR_VALUES; | |
1827 | else if (!strcmp (print_frame_arguments, "all")) | |
1828 | arg_type = CLI_ALL_VALUES; | |
1829 | else | |
1830 | arg_type = NO_VALUES; | |
1831 | ||
6dddc817 DE |
1832 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
1833 | arg_type, current_uiout, | |
1834 | py_start, py_end); | |
1e611234 | 1835 | } |
6dddc817 | 1836 | |
1e611234 PM |
1837 | /* Run the inbuilt backtrace if there are no filters registered, or |
1838 | "no-filters" has been specified from the command. */ | |
6dddc817 | 1839 | if (no_filters || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
1840 | { |
1841 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1842 | { | |
1843 | QUIT; | |
1844 | ||
1845 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1846 | means further attempts to backtrace would fail (on the other | |
1847 | hand, perhaps the code does or could be fixed to make sure | |
1848 | the frame->prev field gets set to NULL in that case). */ | |
1849 | ||
08d72866 | 1850 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1e611234 | 1851 | if (show_locals) |
d0548fa2 PM |
1852 | { |
1853 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1854 | |
d0548fa2 | 1855 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1856 | |
d0548fa2 PM |
1857 | /* print_frame_local_vars invalidates FI. */ |
1858 | fi = frame_find_by_id (frame_id); | |
1859 | if (fi == NULL) | |
1860 | { | |
1861 | trailing = NULL; | |
1862 | warning (_("Unable to restore previously selected frame.")); | |
1863 | break; | |
1864 | } | |
8f043999 | 1865 | } |
55feb689 | 1866 | |
1e611234 PM |
1867 | /* Save the last frame to check for error conditions. */ |
1868 | trailing = fi; | |
1869 | } | |
c906108c | 1870 | |
1e611234 PM |
1871 | /* If we've stopped before the end, mention that. */ |
1872 | if (fi && from_tty) | |
1873 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1874 | |
1e611234 PM |
1875 | /* If we've run out of frames, and the reason appears to be an error |
1876 | condition, print it. */ | |
1877 | if (fi == NULL && trailing != NULL) | |
1878 | { | |
1879 | enum unwind_stop_reason reason; | |
55feb689 | 1880 | |
1e611234 PM |
1881 | reason = get_frame_unwind_stop_reason (trailing); |
1882 | if (reason >= UNWIND_FIRST_ERROR) | |
1883 | printf_filtered (_("Backtrace stopped: %s\n"), | |
53e8a631 | 1884 | frame_stop_reason_string (trailing)); |
1e611234 | 1885 | } |
55feb689 | 1886 | } |
c906108c SS |
1887 | } |
1888 | ||
1889 | static void | |
fba45db2 | 1890 | backtrace_command (char *arg, int from_tty) |
c906108c | 1891 | { |
5fe41fbf | 1892 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1893 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1894 | int user_arg = 0; | |
c906108c | 1895 | |
033a42c2 | 1896 | if (arg) |
c906108c | 1897 | { |
033a42c2 | 1898 | char **argv; |
c906108c SS |
1899 | int i; |
1900 | ||
d1a41061 | 1901 | argv = gdb_buildargv (arg); |
5fe41fbf | 1902 | make_cleanup_freeargv (argv); |
c906108c | 1903 | argc = 0; |
033a42c2 | 1904 | for (i = 0; argv[i]; i++) |
c5aa993b | 1905 | { |
745b8ca0 | 1906 | unsigned int j; |
c5aa993b | 1907 | |
033a42c2 | 1908 | for (j = 0; j < strlen (argv[i]); j++) |
8d3fea16 | 1909 | argv[i][j] = TOLOWER (argv[i][j]); |
c5aa993b | 1910 | |
1e611234 PM |
1911 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1912 | no_filters = argc; | |
c5aa993b JM |
1913 | else |
1914 | { | |
1e611234 PM |
1915 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1916 | fulltrace_arg = argc; | |
1917 | else | |
1918 | { | |
1919 | user_arg++; | |
1920 | arglen += strlen (argv[i]); | |
1921 | } | |
c5aa993b | 1922 | } |
1e611234 | 1923 | argc++; |
c5aa993b | 1924 | } |
1e611234 PM |
1925 | arglen += user_arg; |
1926 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1927 | { |
033a42c2 | 1928 | if (arglen > 0) |
c5aa993b | 1929 | { |
224c3ddb | 1930 | arg = (char *) xmalloc (arglen + 1); |
b1d288d3 JK |
1931 | make_cleanup (xfree, arg); |
1932 | arg[0] = 0; | |
1e611234 | 1933 | for (i = 0; i < argc; i++) |
c5aa993b | 1934 | { |
1e611234 | 1935 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1936 | { |
033a42c2 MK |
1937 | strcat (arg, argv[i]); |
1938 | strcat (arg, " "); | |
c5aa993b JM |
1939 | } |
1940 | } | |
1941 | } | |
1942 | else | |
033a42c2 | 1943 | arg = NULL; |
c5aa993b | 1944 | } |
c906108c SS |
1945 | } |
1946 | ||
1e611234 PM |
1947 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1948 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1949 | |
5fe41fbf | 1950 | do_cleanups (old_chain); |
c906108c SS |
1951 | } |
1952 | ||
2c58c0a9 PA |
1953 | /* Iterate over the local variables of a block B, calling CB with |
1954 | CB_DATA. */ | |
c906108c | 1955 | |
2c58c0a9 | 1956 | static void |
3977b71f | 1957 | iterate_over_block_locals (const struct block *b, |
2c58c0a9 PA |
1958 | iterate_over_block_arg_local_vars_cb cb, |
1959 | void *cb_data) | |
c906108c | 1960 | { |
8157b174 | 1961 | struct block_iterator iter; |
de4f826b | 1962 | struct symbol *sym; |
c906108c | 1963 | |
de4f826b | 1964 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1965 | { |
c906108c SS |
1966 | switch (SYMBOL_CLASS (sym)) |
1967 | { | |
1968 | case LOC_LOCAL: | |
1969 | case LOC_REGISTER: | |
1970 | case LOC_STATIC: | |
4c2df51b | 1971 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1972 | if (SYMBOL_IS_ARGUMENT (sym)) |
1973 | break; | |
4357ac6c TT |
1974 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1975 | break; | |
2c58c0a9 | 1976 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1977 | break; |
1978 | ||
1979 | default: | |
1980 | /* Ignore symbols which are not locals. */ | |
1981 | break; | |
1982 | } | |
1983 | } | |
c906108c SS |
1984 | } |
1985 | ||
65c06092 | 1986 | |
c906108c SS |
1987 | /* Same, but print labels. */ |
1988 | ||
65c06092 JB |
1989 | #if 0 |
1990 | /* Commented out, as the code using this function has also been | |
1991 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1992 | was commented out in the first place. The discussion introducing | |
1993 | this change (2007-12-04: Support lexical blocks and function bodies | |
1994 | that occupy non-contiguous address ranges) did not explain why | |
1995 | this change was made. */ | |
c906108c | 1996 | static int |
5af949e3 UW |
1997 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1998 | int *have_default, struct ui_file *stream) | |
c906108c | 1999 | { |
8157b174 | 2000 | struct block_iterator iter; |
52f0bd74 AC |
2001 | struct symbol *sym; |
2002 | int values_printed = 0; | |
c906108c | 2003 | |
de4f826b | 2004 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2005 | { |
3567439c | 2006 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
2007 | { |
2008 | if (*have_default) | |
2009 | continue; | |
2010 | *have_default = 1; | |
2011 | } | |
2012 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2013 | { | |
2014 | struct symtab_and_line sal; | |
79a45b7d | 2015 | struct value_print_options opts; |
433759f7 | 2016 | |
c906108c SS |
2017 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
2018 | values_printed = 1; | |
de5ad195 | 2019 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
2020 | get_user_print_options (&opts); |
2021 | if (opts.addressprint) | |
c906108c SS |
2022 | { |
2023 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
2024 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
2025 | stream); | |
c906108c SS |
2026 | } |
2027 | fprintf_filtered (stream, " in file %s, line %d\n", | |
2028 | sal.symtab->filename, sal.line); | |
2029 | } | |
2030 | } | |
033a42c2 | 2031 | |
c906108c SS |
2032 | return values_printed; |
2033 | } | |
65c06092 | 2034 | #endif |
c906108c | 2035 | |
2c58c0a9 PA |
2036 | /* Iterate over all the local variables in block B, including all its |
2037 | superblocks, stopping when the top-level block is reached. */ | |
2038 | ||
2039 | void | |
3977b71f | 2040 | iterate_over_block_local_vars (const struct block *block, |
2c58c0a9 PA |
2041 | iterate_over_block_arg_local_vars_cb cb, |
2042 | void *cb_data) | |
2043 | { | |
2044 | while (block) | |
2045 | { | |
2046 | iterate_over_block_locals (block, cb, cb_data); | |
2047 | /* After handling the function's top-level block, stop. Don't | |
2048 | continue to its superblock, the block of per-file | |
2049 | symbols. */ | |
2050 | if (BLOCK_FUNCTION (block)) | |
2051 | break; | |
2052 | block = BLOCK_SUPERBLOCK (block); | |
2053 | } | |
2054 | } | |
2055 | ||
2056 | /* Data to be passed around in the calls to the locals and args | |
2057 | iterators. */ | |
c906108c | 2058 | |
2c58c0a9 PA |
2059 | struct print_variable_and_value_data |
2060 | { | |
8f043999 | 2061 | struct frame_id frame_id; |
2c58c0a9 PA |
2062 | int num_tabs; |
2063 | struct ui_file *stream; | |
2064 | int values_printed; | |
2065 | }; | |
2066 | ||
c378eb4e | 2067 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2068 | |
2069 | static void | |
2070 | do_print_variable_and_value (const char *print_name, | |
2071 | struct symbol *sym, | |
2072 | void *cb_data) | |
2073 | { | |
19ba03f4 SM |
2074 | struct print_variable_and_value_data *p |
2075 | = (struct print_variable_and_value_data *) cb_data; | |
8f043999 JK |
2076 | struct frame_info *frame; |
2077 | ||
2078 | frame = frame_find_by_id (p->frame_id); | |
2079 | if (frame == NULL) | |
2080 | { | |
2081 | warning (_("Unable to restore previously selected frame.")); | |
2082 | return; | |
2083 | } | |
2084 | ||
2085 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2086 | ||
2087 | /* print_variable_and_value invalidates FRAME. */ | |
2088 | frame = NULL; | |
2c58c0a9 | 2089 | |
2c58c0a9 PA |
2090 | p->values_printed = 1; |
2091 | } | |
c906108c | 2092 | |
8f043999 JK |
2093 | /* Print all variables from the innermost up to the function block of FRAME. |
2094 | Print them with values to STREAM indented by NUM_TABS. | |
2095 | ||
2096 | This function will invalidate FRAME. */ | |
2097 | ||
c906108c | 2098 | static void |
033a42c2 | 2099 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2100 | struct ui_file *stream) |
c906108c | 2101 | { |
2c58c0a9 | 2102 | struct print_variable_and_value_data cb_data; |
3977b71f | 2103 | const struct block *block; |
1d4f5741 | 2104 | CORE_ADDR pc; |
16c3b12f | 2105 | struct gdb_exception except = exception_none; |
1d4f5741 PA |
2106 | |
2107 | if (!get_frame_pc_if_available (frame, &pc)) | |
2108 | { | |
2109 | fprintf_filtered (stream, | |
2110 | _("PC unavailable, cannot determine locals.\n")); | |
2111 | return; | |
2112 | } | |
c906108c | 2113 | |
2c58c0a9 | 2114 | block = get_frame_block (frame, 0); |
c906108c SS |
2115 | if (block == 0) |
2116 | { | |
2117 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2118 | return; | |
2119 | } | |
c5aa993b | 2120 | |
8f043999 | 2121 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2122 | cb_data.num_tabs = 4 * num_tabs; |
2123 | cb_data.stream = stream; | |
2124 | cb_data.values_printed = 0; | |
2125 | ||
16c3b12f JB |
2126 | /* Temporarily change the selected frame to the given FRAME. |
2127 | This allows routines that rely on the selected frame instead | |
2128 | of being given a frame as parameter to use the correct frame. */ | |
2129 | select_frame (frame); | |
2130 | ||
2131 | TRY | |
2132 | { | |
2133 | iterate_over_block_local_vars (block, | |
2134 | do_print_variable_and_value, | |
2135 | &cb_data); | |
2136 | } | |
2137 | CATCH (ex, RETURN_MASK_ALL) | |
2138 | { | |
2139 | except = ex; | |
2140 | } | |
2141 | END_CATCH | |
2142 | ||
2143 | /* Restore the selected frame, and then rethrow if there was a problem. */ | |
2144 | select_frame (frame_find_by_id (cb_data.frame_id)); | |
2145 | if (except.reason < 0) | |
2146 | throw_exception (except); | |
c906108c | 2147 | |
8f043999 JK |
2148 | /* do_print_variable_and_value invalidates FRAME. */ |
2149 | frame = NULL; | |
2150 | ||
2c58c0a9 | 2151 | if (!cb_data.values_printed) |
033a42c2 | 2152 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2153 | } |
2154 | ||
c906108c | 2155 | void |
fba45db2 | 2156 | locals_info (char *args, int from_tty) |
c906108c | 2157 | { |
033a42c2 | 2158 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2159 | 0, gdb_stdout); |
c906108c SS |
2160 | } |
2161 | ||
2c58c0a9 PA |
2162 | /* Iterate over all the argument variables in block B. |
2163 | ||
2164 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2165 | ||
2166 | void | |
3977b71f | 2167 | iterate_over_block_arg_vars (const struct block *b, |
2c58c0a9 PA |
2168 | iterate_over_block_arg_local_vars_cb cb, |
2169 | void *cb_data) | |
c906108c | 2170 | { |
8157b174 | 2171 | struct block_iterator iter; |
52f0bd74 | 2172 | struct symbol *sym, *sym2; |
c906108c | 2173 | |
de4f826b | 2174 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2175 | { |
2a2d4dc3 AS |
2176 | /* Don't worry about things which aren't arguments. */ |
2177 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2178 | { |
c906108c SS |
2179 | /* We have to look up the symbol because arguments can have |
2180 | two entries (one a parameter, one a local) and the one we | |
2181 | want is the local, which lookup_symbol will find for us. | |
2182 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2183 | small structure and gcc2 when the argument type is float | |
2184 | and it is passed as a double and converted to float by | |
2185 | the prologue (in the latter case the type of the LOC_ARG | |
2186 | symbol is double and the type of the LOC_LOCAL symbol is | |
2187 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2188 | are not combined in symbol-reading. */ | |
2189 | ||
3567439c | 2190 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
d12307c1 | 2191 | b, VAR_DOMAIN, NULL).symbol; |
2c58c0a9 | 2192 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2193 | } |
2194 | } | |
2c58c0a9 PA |
2195 | } |
2196 | ||
8f043999 JK |
2197 | /* Print all argument variables of the function of FRAME. |
2198 | Print them with values to STREAM. | |
2199 | ||
2200 | This function will invalidate FRAME. */ | |
2201 | ||
2c58c0a9 PA |
2202 | static void |
2203 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2204 | { | |
2205 | struct print_variable_and_value_data cb_data; | |
2206 | struct symbol *func; | |
1d4f5741 PA |
2207 | CORE_ADDR pc; |
2208 | ||
2209 | if (!get_frame_pc_if_available (frame, &pc)) | |
2210 | { | |
2211 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2212 | return; | |
2213 | } | |
2c58c0a9 PA |
2214 | |
2215 | func = get_frame_function (frame); | |
2216 | if (func == NULL) | |
2217 | { | |
2218 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2219 | return; | |
2220 | } | |
2221 | ||
8f043999 | 2222 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2223 | cb_data.num_tabs = 0; |
2224 | cb_data.stream = gdb_stdout; | |
2225 | cb_data.values_printed = 0; | |
2226 | ||
2227 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2228 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2229 | |
8f043999 JK |
2230 | /* do_print_variable_and_value invalidates FRAME. */ |
2231 | frame = NULL; | |
2232 | ||
2c58c0a9 | 2233 | if (!cb_data.values_printed) |
033a42c2 | 2234 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2235 | } |
2236 | ||
2237 | void | |
fba45db2 | 2238 | args_info (char *ignore, int from_tty) |
c906108c | 2239 | { |
033a42c2 | 2240 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2241 | gdb_stdout); |
c906108c SS |
2242 | } |
2243 | ||
033a42c2 MK |
2244 | /* Select frame FRAME. Also print the stack frame and show the source |
2245 | if this is the tui version. */ | |
bedfa57b | 2246 | static void |
033a42c2 | 2247 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2248 | { |
033a42c2 MK |
2249 | select_frame (frame); |
2250 | if (frame) | |
08d72866 | 2251 | print_stack_frame (frame, 1, SRC_AND_LOC, 1); |
c906108c | 2252 | } |
c906108c | 2253 | \f |
c906108c | 2254 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2255 | Can return zero under various legitimate circumstances. |
2256 | ||
2257 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2258 | code address within the block returned. We use this to decide | |
2259 | which macros are in scope. */ | |
c906108c | 2260 | |
3977b71f | 2261 | const struct block * |
ae767bfb | 2262 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2263 | { |
d729566a | 2264 | if (!has_stack_frames ()) |
8ea051c5 PA |
2265 | return 0; |
2266 | ||
206415a3 | 2267 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2268 | } |
2269 | ||
2270 | /* Find a frame a certain number of levels away from FRAME. | |
2271 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2272 | Positive means go to earlier frames (up); negative, the reverse. | |
2273 | The int that contains the number of levels is counted toward | |
2274 | zero as the frames for those levels are found. | |
2275 | If the top or bottom frame is reached, that frame is returned, | |
2276 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2277 | how much farther the original request asked to go. */ | |
2278 | ||
2279 | struct frame_info * | |
033a42c2 | 2280 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2281 | { |
033a42c2 MK |
2282 | /* Going up is simple: just call get_prev_frame enough times or |
2283 | until the initial frame is reached. */ | |
c906108c SS |
2284 | while (*level_offset_ptr > 0) |
2285 | { | |
033a42c2 | 2286 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2287 | |
033a42c2 | 2288 | if (!prev) |
c906108c SS |
2289 | break; |
2290 | (*level_offset_ptr)--; | |
2291 | frame = prev; | |
2292 | } | |
033a42c2 | 2293 | |
c906108c | 2294 | /* Going down is just as simple. */ |
033a42c2 | 2295 | while (*level_offset_ptr < 0) |
c906108c | 2296 | { |
033a42c2 | 2297 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2298 | |
033a42c2 MK |
2299 | if (!next) |
2300 | break; | |
2301 | (*level_offset_ptr)++; | |
2302 | frame = next; | |
c906108c | 2303 | } |
033a42c2 | 2304 | |
c906108c SS |
2305 | return frame; |
2306 | } | |
2307 | ||
033a42c2 MK |
2308 | /* The "select_frame" command. With no argument this is a NOP. |
2309 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2310 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2311 | ||
2312 | See parse_frame_specification for more info on proper frame | |
2313 | expressions. */ | |
c906108c | 2314 | |
8b93c638 | 2315 | void |
fba45db2 | 2316 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2317 | { |
4034d0ff AT |
2318 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2319 | ||
a0d34a39 | 2320 | select_frame (parse_frame_specification (level_exp, NULL)); |
4034d0ff AT |
2321 | if (get_selected_frame_if_set () != prev_frame) |
2322 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); | |
c906108c SS |
2323 | } |
2324 | ||
033a42c2 MK |
2325 | /* The "frame" command. With no argument, print the selected frame |
2326 | briefly. With an argument, behave like select_frame and then print | |
2327 | the selected frame. */ | |
c906108c | 2328 | |
033a42c2 | 2329 | static void |
fba45db2 | 2330 | frame_command (char *level_exp, int from_tty) |
c906108c | 2331 | { |
4034d0ff AT |
2332 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2333 | ||
2334 | select_frame (parse_frame_specification (level_exp, NULL)); | |
2335 | if (get_selected_frame_if_set () != prev_frame) | |
2336 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); | |
2337 | else | |
2338 | print_selected_thread_frame (current_uiout, USER_SELECTED_FRAME); | |
c906108c SS |
2339 | } |
2340 | ||
033a42c2 MK |
2341 | /* Select the frame up one or COUNT_EXP stack levels from the |
2342 | previously selected frame, and print it briefly. */ | |
c906108c | 2343 | |
c906108c | 2344 | static void |
d3d3328b | 2345 | up_silently_base (const char *count_exp) |
c906108c | 2346 | { |
033a42c2 MK |
2347 | struct frame_info *frame; |
2348 | int count = 1; | |
2349 | ||
c906108c | 2350 | if (count_exp) |
bb518678 | 2351 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2352 | |
033a42c2 MK |
2353 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2354 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2355 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2356 | select_frame (frame); |
c906108c SS |
2357 | } |
2358 | ||
2359 | static void | |
fba45db2 | 2360 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2361 | { |
c5aa993b | 2362 | up_silently_base (count_exp); |
c906108c SS |
2363 | } |
2364 | ||
2365 | static void | |
fba45db2 | 2366 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2367 | { |
2368 | up_silently_base (count_exp); | |
4034d0ff | 2369 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); |
c906108c SS |
2370 | } |
2371 | ||
033a42c2 MK |
2372 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2373 | selected frame, and print it briefly. */ | |
c906108c | 2374 | |
c906108c | 2375 | static void |
d3d3328b | 2376 | down_silently_base (const char *count_exp) |
c906108c | 2377 | { |
52f0bd74 | 2378 | struct frame_info *frame; |
033a42c2 | 2379 | int count = -1; |
f89b749f | 2380 | |
c906108c | 2381 | if (count_exp) |
bb518678 | 2382 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2383 | |
033a42c2 MK |
2384 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2385 | if (count != 0 && count_exp == NULL) | |
c906108c | 2386 | { |
033a42c2 MK |
2387 | /* We only do this if COUNT_EXP is not specified. That way |
2388 | "down" means to really go down (and let me know if that is | |
2389 | impossible), but "down 9999" can be used to mean go all the | |
2390 | way down without getting an error. */ | |
c906108c | 2391 | |
033a42c2 | 2392 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2393 | } |
2394 | ||
0f7d239c | 2395 | select_frame (frame); |
c906108c SS |
2396 | } |
2397 | ||
c906108c | 2398 | static void |
fba45db2 | 2399 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2400 | { |
2401 | down_silently_base (count_exp); | |
c906108c SS |
2402 | } |
2403 | ||
2404 | static void | |
fba45db2 | 2405 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2406 | { |
2407 | down_silently_base (count_exp); | |
4034d0ff | 2408 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); |
c906108c | 2409 | } |
033a42c2 | 2410 | |
8b93c638 | 2411 | void |
fba45db2 | 2412 | return_command (char *retval_exp, int from_tty) |
c906108c | 2413 | { |
901900c4 MGD |
2414 | /* Initialize it just to avoid a GCC false warning. */ |
2415 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2416 | struct frame_info *thisframe; |
d80b854b | 2417 | struct gdbarch *gdbarch; |
c906108c | 2418 | struct symbol *thisfun; |
3d6d86c6 | 2419 | struct value *return_value = NULL; |
6a3a010b | 2420 | struct value *function = NULL; |
fc70c2a0 | 2421 | const char *query_prefix = ""; |
c906108c | 2422 | |
5ed92fa8 UW |
2423 | thisframe = get_selected_frame ("No selected frame."); |
2424 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2425 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2426 | |
edb3359d DJ |
2427 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2428 | error (_("Can not force return from an inlined function.")); | |
2429 | ||
fc70c2a0 AC |
2430 | /* Compute the return value. If the computation triggers an error, |
2431 | let it bail. If the return type can't be handled, set | |
2432 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2433 | message. */ | |
c906108c SS |
2434 | if (retval_exp) |
2435 | { | |
61ff14c6 JK |
2436 | struct expression *retval_expr = parse_expression (retval_exp); |
2437 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2438 | struct type *return_type = NULL; |
2439 | ||
fc70c2a0 AC |
2440 | /* Compute the return value. Should the computation fail, this |
2441 | call throws an error. */ | |
61ff14c6 | 2442 | return_value = evaluate_expression (retval_expr); |
c906108c | 2443 | |
fc70c2a0 AC |
2444 | /* Cast return value to the return type of the function. Should |
2445 | the cast fail, this call throws an error. */ | |
c906108c SS |
2446 | if (thisfun != NULL) |
2447 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2448 | if (return_type == NULL) | |
61ff14c6 | 2449 | { |
9eaf6705 TT |
2450 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2451 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2452 | error (_("Return value type not available for selected " |
2453 | "stack frame.\n" | |
2454 | "Please use an explicit cast of the value to return.")); | |
2455 | return_type = value_type (return_value); | |
2456 | } | |
2457 | do_cleanups (old_chain); | |
f168693b | 2458 | return_type = check_typedef (return_type); |
c906108c SS |
2459 | return_value = value_cast (return_type, return_value); |
2460 | ||
fc70c2a0 AC |
2461 | /* Make sure the value is fully evaluated. It may live in the |
2462 | stack frame we're about to pop. */ | |
d69fe07e | 2463 | if (value_lazy (return_value)) |
c906108c | 2464 | value_fetch_lazy (return_value); |
c906108c | 2465 | |
6a3a010b | 2466 | if (thisfun != NULL) |
63e43d3a | 2467 | function = read_var_value (thisfun, NULL, thisframe); |
6a3a010b | 2468 | |
bbfdfe1c | 2469 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2470 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2471 | /* If the return-type is "void", don't try to find the | |
2472 | return-value's location. However, do still evaluate the | |
2473 | return expression so that, even when the expression result | |
2474 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2475 | occur. */ |
667e784f | 2476 | return_value = NULL; |
bbfdfe1c | 2477 | else if (thisfun != NULL) |
fc70c2a0 | 2478 | { |
bbfdfe1c DM |
2479 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2480 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2481 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2482 | { | |
2483 | query_prefix = "The location at which to store the " | |
2484 | "function's return value is unknown.\n" | |
2485 | "If you continue, the return value " | |
2486 | "that you specified will be ignored.\n"; | |
2487 | return_value = NULL; | |
2488 | } | |
fc70c2a0 | 2489 | } |
c906108c SS |
2490 | } |
2491 | ||
fc70c2a0 AC |
2492 | /* Does an interactive user really want to do this? Include |
2493 | information, such as how well GDB can handle the return value, in | |
2494 | the query message. */ | |
2495 | if (from_tty) | |
2496 | { | |
2497 | int confirmed; | |
433759f7 | 2498 | |
fc70c2a0 | 2499 | if (thisfun == NULL) |
e2e0b3e5 | 2500 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2501 | query_prefix); |
2502 | else | |
743649fd MW |
2503 | { |
2504 | if (TYPE_NO_RETURN (thisfun->type)) | |
d35b90fb | 2505 | warning (_("Function does not return normally to caller.")); |
743649fd MW |
2506 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
2507 | SYMBOL_PRINT_NAME (thisfun)); | |
2508 | } | |
fc70c2a0 | 2509 | if (!confirmed) |
8a3fe4f8 | 2510 | error (_("Not confirmed")); |
fc70c2a0 | 2511 | } |
c906108c | 2512 | |
a45ae3ed UW |
2513 | /* Discard the selected frame and all frames inner-to it. */ |
2514 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2515 | |
a1f5b845 | 2516 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2517 | if (return_value != NULL) |
2518 | { | |
df407dfe | 2519 | struct type *return_type = value_type (return_value); |
7500260a | 2520 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2521 | |
bbfdfe1c DM |
2522 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2523 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2524 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2525 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2526 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2527 | } |
1a2aab69 | 2528 | |
fc70c2a0 AC |
2529 | /* If we are at the end of a call dummy now, pop the dummy frame |
2530 | too. */ | |
e8bcf01f AC |
2531 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2532 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2533 | |
edbbff4a | 2534 | select_frame (get_current_frame ()); |
c906108c | 2535 | /* If interactive, print the frame that is now current. */ |
c906108c | 2536 | if (from_tty) |
edbbff4a | 2537 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2538 | } |
2539 | ||
033a42c2 | 2540 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2541 | is within the current stack frame. */ |
c906108c SS |
2542 | |
2543 | struct function_bounds | |
2544 | { | |
2545 | CORE_ADDR low, high; | |
2546 | }; | |
2547 | ||
2548 | static void | |
fba45db2 | 2549 | func_command (char *arg, int from_tty) |
c906108c | 2550 | { |
033a42c2 | 2551 | struct frame_info *frame; |
c906108c SS |
2552 | int found = 0; |
2553 | struct symtabs_and_lines sals; | |
2554 | int i; | |
2555 | int level = 1; | |
033a42c2 | 2556 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2557 | struct cleanup *cleanups; |
c906108c | 2558 | |
9d622bda | 2559 | if (arg == NULL) |
c906108c SS |
2560 | return; |
2561 | ||
edbbff4a | 2562 | frame = get_current_frame (); |
39cf75f7 | 2563 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2564 | cleanups = make_cleanup (xfree, sals.sals); |
8d749320 | 2565 | func_bounds = XNEWVEC (struct function_bounds, sals.nelts); |
f8eba3c6 | 2566 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2567 | for (i = 0; (i < sals.nelts && !found); i++) |
2568 | { | |
f8eba3c6 TT |
2569 | if (sals.sals[i].pspace != current_program_space) |
2570 | func_bounds[i].low = func_bounds[i].high = 0; | |
2571 | else if (sals.sals[i].pc == 0 | |
2572 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2573 | &func_bounds[i].low, | |
2574 | &func_bounds[i].high) == 0) | |
c906108c | 2575 | { |
033a42c2 | 2576 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2577 | } |
2578 | } | |
2579 | ||
2580 | do | |
2581 | { | |
2582 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2583 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2584 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2585 | if (!found) |
2586 | { | |
2587 | level = 1; | |
033a42c2 | 2588 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2589 | } |
2590 | } | |
2591 | while (!found && level == 0); | |
2592 | ||
f8eba3c6 | 2593 | do_cleanups (cleanups); |
c906108c SS |
2594 | |
2595 | if (!found) | |
a3f17187 | 2596 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2597 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2598 | select_and_print_frame (frame); |
c906108c | 2599 | } |
c906108c | 2600 | \f |
033a42c2 MK |
2601 | |
2602 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2603 | void _initialize_stack (void); | |
2604 | ||
c906108c | 2605 | void |
fba45db2 | 2606 | _initialize_stack (void) |
c906108c | 2607 | { |
1bedd215 AC |
2608 | add_com ("return", class_stack, return_command, _("\ |
2609 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2610 | Control remains in the debugger, but when you continue\n\ |
2611 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2612 | If an argument is given, it is an expression for the value to return.")); |
2613 | ||
2614 | add_com ("up", class_stack, up_command, _("\ | |
2615 | Select and print stack frame that called this one.\n\ | |
2616 | An argument says how many frames up to go.")); | |
2617 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2618 | Same as the `up' command, but does not print anything.\n\ | |
2619 | This is useful in command scripts.")); | |
2620 | ||
2621 | add_com ("down", class_stack, down_command, _("\ | |
2622 | Select and print stack frame called by this one.\n\ | |
2623 | An argument says how many frames down to go.")); | |
c906108c SS |
2624 | add_com_alias ("do", "down", class_stack, 1); |
2625 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2626 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2627 | Same as the `down' command, but does not print anything.\n\ | |
2628 | This is useful in command scripts.")); | |
c906108c | 2629 | |
1bedd215 | 2630 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2631 | Select and print a stack frame.\nWith no argument, \ |
2632 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2633 | An argument specifies the frame to select.\n\ |
2634 | It can be a stack frame number or the address of the frame.\n\ | |
2635 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2636 | a command file or a user-defined command.")); |
c906108c SS |
2637 | |
2638 | add_com_alias ("f", "frame", class_stack, 1); | |
2639 | ||
4034d0ff | 2640 | add_com_suppress_notification ("select-frame", class_stack, select_frame_command, _("\ |
1bedd215 | 2641 | Select a stack frame without printing anything.\n\ |
c906108c | 2642 | An argument specifies the frame to select.\n\ |
4034d0ff AT |
2643 | It can be a stack frame number or the address of the frame.\n"), |
2644 | &cli_suppress_notification.user_selected_context); | |
c906108c | 2645 | |
1bedd215 AC |
2646 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2647 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2648 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2649 | 'full' qualifier also prints the values of the local variables.\n\ |
2650 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2651 | on this backtrace.\n")); | |
c906108c | 2652 | add_com_alias ("bt", "backtrace", class_stack, 0); |
c906108c SS |
2653 | |
2654 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2655 | add_info ("stack", backtrace_command, | |
1bedd215 | 2656 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2657 | add_info_alias ("s", "stack", 1); |
2658 | add_info ("frame", frame_info, | |
1bedd215 | 2659 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2660 | add_info_alias ("f", "frame", 1); |
2661 | add_info ("locals", locals_info, | |
1bedd215 | 2662 | _("Local variables of current stack frame.")); |
c906108c | 2663 | add_info ("args", args_info, |
1bedd215 | 2664 | _("Argument variables of current stack frame.")); |
c906108c SS |
2665 | |
2666 | if (dbx_commands) | |
1bedd215 AC |
2667 | add_com ("func", class_stack, func_command, _("\ |
2668 | Select the stack frame that contains <func>.\n\ | |
2669 | Usage: func <name>\n")); | |
c906108c | 2670 | |
88408340 JB |
2671 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2672 | print_frame_arguments_choices, &print_frame_arguments, | |
2673 | _("Set printing of non-scalar frame arguments"), | |
2674 | _("Show printing of non-scalar frame arguments"), | |
2675 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2676 | ||
e7045703 DE |
2677 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2678 | &print_raw_frame_arguments, _("\ | |
2679 | Set whether to print frame arguments in raw form."), _("\ | |
2680 | Show whether to print frame arguments in raw form."), _("\ | |
2681 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2682 | pretty-printers for that value."), | |
2683 | NULL, NULL, | |
2684 | &setprintrawlist, &showprintrawlist); | |
2685 | ||
30c33a9f HZ |
2686 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2687 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2688 | Set whether to disassemble next source line or insn when execution stops."), |
2689 | _("\ | |
2690 | Show whether to disassemble next source line or insn when execution stops."), | |
2691 | _("\ | |
80a0ea0f EZ |
2692 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2693 | to displaying the source line itself. If the next source line cannot\n\ | |
2694 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2695 | will display disassembly of next instruction instead of showing the\n\ | |
2696 | source line.\n\ | |
2697 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2698 | cannot be displayed.\n\ | |
2699 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2700 | source line."), | |
30c33a9f HZ |
2701 | NULL, |
2702 | show_disassemble_next_line, | |
2703 | &setlist, &showlist); | |
a362e3d3 | 2704 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2705 | |
2706 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2707 | print_entry_values_choices, &print_entry_values, | |
2708 | _("Set printing of function arguments at function " | |
2709 | "entry"), | |
2710 | _("Show printing of function arguments at function " | |
2711 | "entry"), | |
2712 | _("\ | |
2713 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2714 | in addition to their current values. This option tells GDB whether\n\ | |
2715 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2716 | or both. Note that one or both of these values may be <optimized out>."), | |
2717 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2718 | } |