Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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. */ |
112e8700 | 170 | if (current_uiout->is_mi_like_p ()) |
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 | |
112e8700 | 237 | || (!uiout->is_mi_like_p () |
e18b2753 | 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); |
112e8700 | 258 | uiout->field_stream ("name", stb); |
93d86cef | 259 | annotate_arg_name_end (); |
112e8700 | 260 | uiout->text ("="); |
93d86cef JK |
261 | |
262 | if (!arg->val && !arg->error) | |
112e8700 | 263 | uiout->text ("..."); |
93d86cef JK |
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 | ||
112e8700 | 310 | uiout->field_stream ("value", stb); |
93d86cef | 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 | ||
112e8700 | 399 | if (val && entryval && !current_uiout->is_mi_like_p ()) |
e18b2753 | 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; | |
112e8700 | 521 | gdb_assert (!current_uiout->is_mi_like_p ()); |
e18b2753 JK |
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; | |
a6bac58e TT |
556 | /* True if we should print arguments, false otherwise. */ |
557 | int print_args = strcmp (print_frame_arguments, "none"); | |
8d3b0994 | 558 | |
8d3b0994 AC |
559 | if (func) |
560 | { | |
3977b71f | 561 | const struct block *b = SYMBOL_BLOCK_VALUE (func); |
8157b174 | 562 | struct block_iterator iter; |
033a42c2 | 563 | struct symbol *sym; |
8d3b0994 | 564 | |
de4f826b | 565 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 566 | { |
e18b2753 | 567 | struct frame_arg arg, entryarg; |
93d86cef | 568 | |
8d3b0994 AC |
569 | QUIT; |
570 | ||
571 | /* Keep track of the highest stack argument offset seen, and | |
572 | skip over any kinds of symbols we don't care about. */ | |
573 | ||
2a2d4dc3 AS |
574 | if (!SYMBOL_IS_ARGUMENT (sym)) |
575 | continue; | |
576 | ||
8d3b0994 AC |
577 | switch (SYMBOL_CLASS (sym)) |
578 | { | |
579 | case LOC_ARG: | |
580 | case LOC_REF_ARG: | |
581 | { | |
582 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 583 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
584 | |
585 | /* Compute address of next argument by adding the size of | |
586 | this argument and rounding to an int boundary. */ | |
587 | current_offset = | |
588 | ((current_offset + arg_size + sizeof (int) - 1) | |
589 | & ~(sizeof (int) - 1)); | |
590 | ||
033a42c2 MK |
591 | /* If this is the highest offset seen yet, set |
592 | highest_offset. */ | |
8d3b0994 AC |
593 | if (highest_offset == -1 |
594 | || (current_offset > highest_offset)) | |
595 | highest_offset = current_offset; | |
596 | ||
033a42c2 MK |
597 | /* Add the number of ints we're about to print to |
598 | args_printed. */ | |
8d3b0994 AC |
599 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
600 | } | |
601 | ||
033a42c2 MK |
602 | /* We care about types of symbols, but don't need to |
603 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 604 | case LOC_REGISTER: |
8d3b0994 | 605 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
606 | case LOC_COMPUTED: |
607 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 608 | default: |
2a2d4dc3 | 609 | break; |
8d3b0994 AC |
610 | } |
611 | ||
612 | /* We have to look up the symbol because arguments can have | |
613 | two entries (one a parameter, one a local) and the one we | |
614 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 615 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
616 | small structure and gcc2 when the argument type is float |
617 | and it is passed as a double and converted to float by | |
618 | the prologue (in the latter case the type of the LOC_ARG | |
619 | symbol is double and the type of the LOC_LOCAL symbol is | |
620 | float). */ | |
033a42c2 MK |
621 | /* But if the parameter name is null, don't try it. Null |
622 | parameter names occur on the RS/6000, for traceback | |
623 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 624 | |
3567439c | 625 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
626 | { |
627 | struct symbol *nsym; | |
433759f7 | 628 | |
3567439c | 629 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
d12307c1 | 630 | b, VAR_DOMAIN, NULL).symbol; |
55765a25 | 631 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
632 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
633 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 634 | { |
033a42c2 MK |
635 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
636 | that it was passed on the stack and loaded into a | |
637 | register, or passed in a register and stored in a | |
638 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
639 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
640 | |
641 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
642 | |
643 | (1) Because find_saved_registers may be slow for | |
644 | remote debugging. | |
645 | ||
646 | (2) Because registers are often re-used and stack | |
647 | slots rarely (never?) are. Therefore using | |
648 | the stack slot is much less likely to print | |
649 | garbage. | |
8d3b0994 AC |
650 | |
651 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
652 | |
653 | (1) So that the backtrace prints the same value | |
654 | as "print foo". I see no compelling reason | |
655 | why this needs to be the case; having the | |
656 | backtrace print the value which was passed | |
657 | in, and "print foo" print the value as | |
658 | modified within the called function, makes | |
659 | perfect sense to me. | |
660 | ||
661 | Additional note: It might be nice if "info args" | |
662 | displayed both values. | |
663 | ||
664 | One more note: There is a case with SPARC | |
665 | structure passing where we need to use the | |
666 | LOC_REGISTER, but this is dealt with by creating | |
667 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
668 | |
669 | /* Leave sym (the LOC_ARG) alone. */ | |
670 | ; | |
671 | } | |
672 | else | |
673 | sym = nsym; | |
674 | } | |
675 | ||
676 | /* Print the current arg. */ | |
677 | if (!first) | |
112e8700 SM |
678 | uiout->text (", "); |
679 | uiout->wrap_hint (" "); | |
8d3b0994 | 680 | |
93d86cef JK |
681 | if (!print_args) |
682 | { | |
683 | memset (&arg, 0, sizeof (arg)); | |
684 | arg.sym = sym; | |
e18b2753 JK |
685 | arg.entry_kind = print_entry_values_no; |
686 | memset (&entryarg, 0, sizeof (entryarg)); | |
687 | entryarg.sym = sym; | |
688 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
689 | } |
690 | else | |
e18b2753 | 691 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 692 | |
e18b2753 JK |
693 | if (arg.entry_kind != print_entry_values_only) |
694 | print_frame_arg (&arg); | |
695 | ||
696 | if (entryarg.entry_kind != print_entry_values_no) | |
697 | { | |
698 | if (arg.entry_kind != print_entry_values_only) | |
699 | { | |
112e8700 SM |
700 | uiout->text (", "); |
701 | uiout->wrap_hint (" "); | |
e18b2753 JK |
702 | } |
703 | ||
704 | print_frame_arg (&entryarg); | |
705 | } | |
8d3b0994 | 706 | |
93d86cef | 707 | xfree (arg.error); |
e18b2753 | 708 | xfree (entryarg.error); |
8d3b0994 AC |
709 | |
710 | first = 0; | |
711 | } | |
712 | } | |
713 | ||
714 | /* Don't print nameless args in situations where we don't know | |
715 | enough about the stack to find them. */ | |
716 | if (num != -1) | |
717 | { | |
718 | long start; | |
719 | ||
720 | if (highest_offset == -1) | |
7500260a | 721 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
722 | else |
723 | start = highest_offset; | |
724 | ||
033a42c2 | 725 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
726 | first, stream); |
727 | } | |
8d3b0994 AC |
728 | } |
729 | ||
033a42c2 MK |
730 | /* Set the current source and line to the location given by frame |
731 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
732 | line is in the center of the next 'list'. */ | |
c789492a | 733 | |
7abfe014 | 734 | void |
5166082f | 735 | set_current_sal_from_frame (struct frame_info *frame) |
c789492a FL |
736 | { |
737 | struct symtab_and_line sal; | |
738 | ||
033a42c2 | 739 | find_frame_sal (frame, &sal); |
5166082f PA |
740 | if (sal.symtab != NULL) |
741 | set_current_source_symtab_and_line (&sal); | |
c789492a FL |
742 | } |
743 | ||
30c33a9f HZ |
744 | /* If ON, GDB will display disassembly of the next source line when |
745 | execution of the program being debugged stops. | |
481df73e HZ |
746 | If AUTO (which is the default), or there's no line info to determine |
747 | the source line of the next instruction, display disassembly of next | |
748 | instruction instead. */ | |
30c33a9f HZ |
749 | |
750 | static enum auto_boolean disassemble_next_line; | |
751 | ||
752 | static void | |
753 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
754 | struct cmd_list_element *c, | |
755 | const char *value) | |
756 | { | |
3e43a32a MS |
757 | fprintf_filtered (file, |
758 | _("Debugger's willingness to use " | |
759 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
760 | value); |
761 | } | |
762 | ||
30c33a9f HZ |
763 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
764 | because it will be broken by filter sometime. */ | |
765 | ||
766 | static void | |
13274fc3 UW |
767 | do_gdb_disassembly (struct gdbarch *gdbarch, |
768 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f | 769 | { |
30c33a9f | 770 | |
492d29ea | 771 | TRY |
30c33a9f | 772 | { |
79a45e25 PA |
773 | gdb_disassembly (gdbarch, current_uiout, 0, |
774 | DISASSEMBLY_RAW_INSN, how_many, | |
775 | low, high); | |
30c33a9f | 776 | } |
492d29ea | 777 | CATCH (exception, RETURN_MASK_ERROR) |
b1d288d3 JK |
778 | { |
779 | /* If an exception was thrown while doing the disassembly, print | |
780 | the error message, to give the user a clue of what happened. */ | |
781 | exception_print (gdb_stderr, exception); | |
782 | } | |
492d29ea | 783 | END_CATCH |
30c33a9f HZ |
784 | } |
785 | ||
033a42c2 | 786 | /* Print information about frame FRAME. The output is format according |
65aa373f | 787 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
788 | PRINT_WHAT is: |
789 | ||
790 | SRC_LINE: Print only source line. | |
791 | LOCATION: Print only location. | |
792 | LOC_AND_SRC: Print location and source line. | |
793 | ||
794 | Used in "where" output, and to emit breakpoint or step | |
795 | messages. */ | |
c906108c | 796 | |
7789c6f5 | 797 | void |
033a42c2 | 798 | print_frame_info (struct frame_info *frame, int print_level, |
08d72866 PA |
799 | enum print_what print_what, int print_args, |
800 | int set_current_sal) | |
c906108c | 801 | { |
5af949e3 | 802 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 803 | struct symtab_and_line sal; |
c5394b80 JM |
804 | int source_print; |
805 | int location_print; | |
79a45e25 | 806 | struct ui_out *uiout = current_uiout; |
c906108c | 807 | |
033a42c2 | 808 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
809 | || get_frame_type (frame) == SIGTRAMP_FRAME |
810 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 811 | { |
075559bc AC |
812 | struct cleanup *uiout_cleanup |
813 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 814 | |
033a42c2 | 815 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 816 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 817 | |
c906108c | 818 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 819 | to list for this frame. */ |
0faf0076 | 820 | if (print_level) |
52c6a6ac | 821 | { |
112e8700 SM |
822 | uiout->text ("#"); |
823 | uiout->field_fmt_int (2, ui_left, "level", | |
033a42c2 | 824 | frame_relative_level (frame)); |
52c6a6ac | 825 | } |
112e8700 | 826 | if (uiout->is_mi_like_p ()) |
52c6a6ac | 827 | { |
075559bc | 828 | annotate_frame_address (); |
112e8700 | 829 | uiout->field_core_addr ("addr", |
5af949e3 | 830 | gdbarch, get_frame_pc (frame)); |
075559bc | 831 | annotate_frame_address_end (); |
52c6a6ac | 832 | } |
6a3fe0a4 | 833 | |
033a42c2 | 834 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
835 | { |
836 | annotate_function_call (); | |
112e8700 | 837 | uiout->field_string ("func", "<function called from gdb>"); |
075559bc | 838 | } |
033a42c2 | 839 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
840 | { |
841 | annotate_signal_handler_caller (); | |
112e8700 | 842 | uiout->field_string ("func", "<signal handler called>"); |
075559bc | 843 | } |
36f15f55 UW |
844 | else if (get_frame_type (frame) == ARCH_FRAME) |
845 | { | |
112e8700 | 846 | uiout->field_string ("func", "<cross-architecture call>"); |
36f15f55 | 847 | } |
112e8700 | 848 | uiout->text ("\n"); |
c906108c | 849 | annotate_frame_end (); |
075559bc | 850 | |
433e77fa HZ |
851 | /* If disassemble-next-line is set to auto or on output the next |
852 | instruction. */ | |
853 | if (disassemble_next_line == AUTO_BOOLEAN_AUTO | |
854 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
855 | do_gdb_disassembly (get_frame_arch (frame), 1, | |
856 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
857 | ||
075559bc | 858 | do_cleanups (uiout_cleanup); |
c906108c SS |
859 | return; |
860 | } | |
861 | ||
033a42c2 MK |
862 | /* If FRAME is not the innermost frame, that normally means that |
863 | FRAME->pc points to *after* the call instruction, and we want to | |
864 | get the line containing the call, never the next line. But if | |
865 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
866 | next frame was not entered as the result of a call, and we want | |
867 | to get the line containing FRAME->pc. */ | |
868 | find_frame_sal (frame, &sal); | |
c906108c | 869 | |
0faf0076 AC |
870 | location_print = (print_what == LOCATION |
871 | || print_what == LOC_AND_ADDRESS | |
872 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
873 | |
874 | if (location_print || !sal.symtab) | |
033a42c2 | 875 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 876 | |
0faf0076 | 877 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 878 | |
30c33a9f HZ |
879 | /* If disassemble-next-line is set to auto or on and doesn't have |
880 | the line debug messages for $pc, output the next instruction. */ | |
881 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
882 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
883 | && source_print && !sal.symtab) | |
13274fc3 UW |
884 | do_gdb_disassembly (get_frame_arch (frame), 1, |
885 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 886 | |
c5394b80 JM |
887 | if (source_print && sal.symtab) |
888 | { | |
889 | int done = 0; | |
0faf0076 | 890 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 891 | && frame_show_address (frame, sal)); |
c5394b80 JM |
892 | |
893 | if (annotation_level) | |
894 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 895 | get_frame_pc (frame)); |
c5394b80 JM |
896 | if (!done) |
897 | { | |
9a4105ab | 898 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
899 | deprecated_print_frame_info_listing_hook (sal.symtab, |
900 | sal.line, | |
901 | sal.line + 1, 0); | |
ba4bbdcb | 902 | else |
c5394b80 | 903 | { |
79a45b7d | 904 | struct value_print_options opts; |
433759f7 | 905 | |
79a45b7d | 906 | get_user_print_options (&opts); |
ba4bbdcb | 907 | /* We used to do this earlier, but that is clearly |
c378eb4e | 908 | wrong. This function is used by many different |
ba4bbdcb KS |
909 | parts of gdb, including normal_stop in infrun.c, |
910 | which uses this to print out the current PC | |
911 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
912 | line. Only the command line really wants this |
913 | behavior. Other UIs probably would like the | |
cbd3c883 | 914 | ability to decide for themselves if it is desired. */ |
79a45b7d | 915 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 916 | { |
112e8700 | 917 | uiout->field_core_addr ("addr", |
5af949e3 | 918 | gdbarch, get_frame_pc (frame)); |
112e8700 | 919 | uiout->text ("\t"); |
ba4bbdcb KS |
920 | } |
921 | ||
922 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 923 | } |
c5394b80 | 924 | } |
30c33a9f HZ |
925 | |
926 | /* If disassemble-next-line is set to on and there is line debug | |
927 | messages, output assembly codes for next line. */ | |
928 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 929 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
930 | } |
931 | ||
08d72866 | 932 | if (set_current_sal) |
e3eebbd7 PA |
933 | { |
934 | CORE_ADDR pc; | |
935 | ||
936 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 937 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 938 | else |
1bfeeb0f | 939 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 940 | } |
c5394b80 JM |
941 | |
942 | annotate_frame_end (); | |
943 | ||
944 | gdb_flush (gdb_stdout); | |
945 | } | |
946 | ||
1bfeeb0f JL |
947 | /* Remember the last symtab and line we displayed, which we use e.g. |
948 | * as the place to put a breakpoint when the `break' command is | |
949 | * invoked with no arguments. */ | |
950 | ||
951 | static void | |
952 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
953 | CORE_ADDR addr, struct symtab *symtab, | |
954 | int line) | |
955 | { | |
956 | last_displayed_sal_valid = valid; | |
957 | last_displayed_pspace = pspace; | |
958 | last_displayed_addr = addr; | |
959 | last_displayed_symtab = symtab; | |
960 | last_displayed_line = line; | |
4cb6da1c AR |
961 | if (valid && pspace == NULL) |
962 | { | |
4cb6da1c | 963 | clear_last_displayed_sal (); |
e36930bb PA |
964 | internal_error (__FILE__, __LINE__, |
965 | _("Trying to set NULL pspace.")); | |
4cb6da1c | 966 | } |
1bfeeb0f JL |
967 | } |
968 | ||
969 | /* Forget the last sal we displayed. */ | |
970 | ||
971 | void | |
972 | clear_last_displayed_sal (void) | |
973 | { | |
974 | last_displayed_sal_valid = 0; | |
975 | last_displayed_pspace = 0; | |
976 | last_displayed_addr = 0; | |
977 | last_displayed_symtab = 0; | |
978 | last_displayed_line = 0; | |
979 | } | |
980 | ||
981 | /* Is our record of the last sal we displayed valid? If not, | |
982 | * the get_last_displayed_* functions will return NULL or 0, as | |
983 | * appropriate. */ | |
984 | ||
985 | int | |
986 | last_displayed_sal_is_valid (void) | |
987 | { | |
988 | return last_displayed_sal_valid; | |
989 | } | |
990 | ||
991 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
992 | ||
993 | struct program_space * | |
994 | get_last_displayed_pspace (void) | |
995 | { | |
996 | if (last_displayed_sal_valid) | |
997 | return last_displayed_pspace; | |
998 | return 0; | |
999 | } | |
1000 | ||
1001 | /* Get the address of the last sal we displayed, if it's valid. */ | |
1002 | ||
1003 | CORE_ADDR | |
1004 | get_last_displayed_addr (void) | |
1005 | { | |
1006 | if (last_displayed_sal_valid) | |
1007 | return last_displayed_addr; | |
1008 | return 0; | |
1009 | } | |
1010 | ||
1011 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
1012 | ||
1013 | struct symtab* | |
1014 | get_last_displayed_symtab (void) | |
1015 | { | |
1016 | if (last_displayed_sal_valid) | |
1017 | return last_displayed_symtab; | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | /* Get the line of the last sal we displayed, if it's valid. */ | |
1022 | ||
1023 | int | |
1024 | get_last_displayed_line (void) | |
1025 | { | |
1026 | if (last_displayed_sal_valid) | |
1027 | return last_displayed_line; | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | /* Get the last sal we displayed, if it's valid. */ | |
1032 | ||
1033 | void | |
1034 | get_last_displayed_sal (struct symtab_and_line *sal) | |
1035 | { | |
1036 | if (last_displayed_sal_valid) | |
1037 | { | |
1038 | sal->pspace = last_displayed_pspace; | |
1039 | sal->pc = last_displayed_addr; | |
1040 | sal->symtab = last_displayed_symtab; | |
1041 | sal->line = last_displayed_line; | |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | sal->pspace = 0; | |
1046 | sal->pc = 0; | |
1047 | sal->symtab = 0; | |
1048 | sal->line = 0; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | ||
e9e07ba6 | 1053 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
55b87a52 | 1054 | corresponding to FRAME. FUNNAME needs to be freed by the caller. */ |
e9e07ba6 | 1055 | |
f8f6f20b | 1056 | void |
55b87a52 | 1057 | find_frame_funname (struct frame_info *frame, char **funname, |
e9e07ba6 | 1058 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1059 | { |
1060 | struct symbol *func; | |
8b93c638 | 1061 | |
f8f6f20b TJB |
1062 | *funname = NULL; |
1063 | *funlang = language_unknown; | |
e9e07ba6 JK |
1064 | if (funcp) |
1065 | *funcp = NULL; | |
c5394b80 | 1066 | |
edb3359d | 1067 | func = get_frame_function (frame); |
c906108c SS |
1068 | if (func) |
1069 | { | |
1070 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1071 | function (when we are in the first function in a file which |
1072 | is compiled without debugging symbols, the previous function | |
1073 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1074 | that is supposed to tell us where the file with debugging |
1075 | symbols ends has been truncated by ar because it is longer | |
1076 | than 15 characters). This also occurs if the user uses asm() | |
1077 | to create a function but not stabs for it (in a file compiled | |
1078 | with -g). | |
c5aa993b JM |
1079 | |
1080 | So look in the minimal symbol tables as well, and if it comes | |
1081 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1082 | I don't think this can ever cause any problems; there |
1083 | shouldn't be any minimal symbols in the middle of a function; | |
1084 | if this is ever changed many parts of GDB will need to be | |
1085 | changed (and we'll create a find_pc_minimal_function or some | |
1086 | such). */ | |
1087 | ||
7cbd4a93 | 1088 | struct bound_minimal_symbol msymbol; |
edb3359d DJ |
1089 | |
1090 | /* Don't attempt to do this for inlined functions, which do not | |
1091 | have a corresponding minimal symbol. */ | |
1092 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1093 | msymbol | |
1094 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
7cbd4a93 TT |
1095 | else |
1096 | memset (&msymbol, 0, sizeof (msymbol)); | |
c906108c | 1097 | |
7cbd4a93 | 1098 | if (msymbol.minsym != NULL |
77e371c0 | 1099 | && (BMSYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1100 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1101 | { | |
c906108c SS |
1102 | /* We also don't know anything about the function besides |
1103 | its address and name. */ | |
1104 | func = 0; | |
efd66ac6 TT |
1105 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1106 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1107 | } |
1108 | else | |
1109 | { | |
d10153cf TT |
1110 | const char *print_name = SYMBOL_PRINT_NAME (func); |
1111 | ||
f8f6f20b | 1112 | *funlang = SYMBOL_LANGUAGE (func); |
e9e07ba6 JK |
1113 | if (funcp) |
1114 | *funcp = func; | |
f8f6f20b | 1115 | if (*funlang == language_cplus) |
c5aa993b | 1116 | { |
033a42c2 MK |
1117 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1118 | to display the demangled name that we already have | |
1119 | stored in the symbol table, but we stored a version | |
1120 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1121 | display parameters. So remove the parameters. */ |
d10153cf | 1122 | char *func_only = cp_remove_params (print_name); |
433759f7 | 1123 | |
3567439c | 1124 | if (func_only) |
d10153cf | 1125 | *funname = func_only; |
c5aa993b | 1126 | } |
d10153cf TT |
1127 | |
1128 | /* If we didn't hit the C++ case above, set *funname here. | |
1129 | This approach is taken to avoid having to install a | |
1130 | cleanup in case cp_remove_params can throw. */ | |
1131 | if (*funname == NULL) | |
1132 | *funname = xstrdup (print_name); | |
c906108c SS |
1133 | } |
1134 | } | |
1135 | else | |
1136 | { | |
7cbd4a93 | 1137 | struct bound_minimal_symbol msymbol; |
e3eebbd7 | 1138 | CORE_ADDR pc; |
033a42c2 | 1139 | |
e3eebbd7 PA |
1140 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1141 | return; | |
1142 | ||
1143 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
7cbd4a93 | 1144 | if (msymbol.minsym != NULL) |
c906108c | 1145 | { |
efd66ac6 TT |
1146 | *funname = xstrdup (MSYMBOL_PRINT_NAME (msymbol.minsym)); |
1147 | *funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1148 | } |
1149 | } | |
f8f6f20b TJB |
1150 | } |
1151 | ||
1152 | static void | |
1153 | print_frame (struct frame_info *frame, int print_level, | |
1154 | enum print_what print_what, int print_args, | |
1155 | struct symtab_and_line sal) | |
1156 | { | |
5af949e3 | 1157 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1158 | struct ui_out *uiout = current_uiout; |
55b87a52 | 1159 | char *funname = NULL; |
f8f6f20b | 1160 | enum language funlang = language_unknown; |
f99d8bf4 | 1161 | struct ui_file *stb; |
f8f6f20b TJB |
1162 | struct cleanup *old_chain, *list_chain; |
1163 | struct value_print_options opts; | |
e9e07ba6 | 1164 | struct symbol *func; |
e3eebbd7 PA |
1165 | CORE_ADDR pc = 0; |
1166 | int pc_p; | |
1167 | ||
1168 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b | 1169 | |
f99d8bf4 PA |
1170 | stb = mem_fileopen (); |
1171 | old_chain = make_cleanup_ui_file_delete (stb); | |
f8f6f20b | 1172 | |
e9e07ba6 | 1173 | find_frame_funname (frame, &funname, &funlang, &func); |
55b87a52 | 1174 | make_cleanup (xfree, funname); |
c906108c | 1175 | |
033a42c2 | 1176 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1177 | gdbarch, pc); |
c5394b80 | 1178 | |
666547aa | 1179 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1180 | |
0faf0076 | 1181 | if (print_level) |
8b93c638 | 1182 | { |
112e8700 SM |
1183 | uiout->text ("#"); |
1184 | uiout->field_fmt_int (2, ui_left, "level", | |
033a42c2 | 1185 | frame_relative_level (frame)); |
8b93c638 | 1186 | } |
79a45b7d TT |
1187 | get_user_print_options (&opts); |
1188 | if (opts.addressprint) | |
e3eebbd7 PA |
1189 | if (!sal.symtab |
1190 | || frame_show_address (frame, sal) | |
0faf0076 | 1191 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1192 | { |
1193 | annotate_frame_address (); | |
e3eebbd7 | 1194 | if (pc_p) |
112e8700 | 1195 | uiout->field_core_addr ("addr", gdbarch, pc); |
e3eebbd7 | 1196 | else |
112e8700 | 1197 | uiout->field_string ("addr", "<unavailable>"); |
8b93c638 | 1198 | annotate_frame_address_end (); |
112e8700 | 1199 | uiout->text (" in "); |
c5394b80 JM |
1200 | } |
1201 | annotate_frame_function_name (); | |
f99d8bf4 | 1202 | fprintf_symbol_filtered (stb, funname ? funname : "??", |
033a42c2 | 1203 | funlang, DMGL_ANSI); |
112e8700 SM |
1204 | uiout->field_stream ("func", stb); |
1205 | uiout->wrap_hint (" "); | |
c5394b80 JM |
1206 | annotate_frame_args (); |
1207 | ||
112e8700 | 1208 | uiout->text (" ("); |
0faf0076 | 1209 | if (print_args) |
c906108c | 1210 | { |
311b5970 JK |
1211 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1212 | int numargs; | |
d493eb33 | 1213 | struct cleanup *args_list_chain; |
433759f7 | 1214 | |
311b5970 JK |
1215 | if (gdbarch_frame_num_args_p (gdbarch)) |
1216 | { | |
1217 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1218 | gdb_assert (numargs >= 0); | |
1219 | } | |
1220 | else | |
1221 | numargs = -1; | |
1222 | ||
68c81b54 | 1223 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
492d29ea | 1224 | TRY |
311b5970 JK |
1225 | { |
1226 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1227 | } | |
492d29ea PA |
1228 | CATCH (e, RETURN_MASK_ERROR) |
1229 | { | |
1230 | } | |
1231 | END_CATCH | |
1232 | ||
c378eb4e | 1233 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1234 | will have " that will not be properly escaped. */ |
666547aa | 1235 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1236 | do_cleanups (args_list_chain); |
c5394b80 JM |
1237 | QUIT; |
1238 | } | |
112e8700 | 1239 | uiout->text (")"); |
4e04028d | 1240 | if (sal.symtab) |
c5394b80 | 1241 | { |
1b56eb55 JK |
1242 | const char *filename_display; |
1243 | ||
1244 | filename_display = symtab_to_filename_for_display (sal.symtab); | |
c5394b80 | 1245 | annotate_frame_source_begin (); |
112e8700 SM |
1246 | uiout->wrap_hint (" "); |
1247 | uiout->text (" at "); | |
8b93c638 | 1248 | annotate_frame_source_file (); |
112e8700 SM |
1249 | uiout->field_string ("file", filename_display); |
1250 | if (uiout->is_mi_like_p ()) | |
76ff342d DJ |
1251 | { |
1252 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1253 | |
112e8700 | 1254 | uiout->field_string ("fullname", fullname); |
76ff342d | 1255 | } |
8b93c638 | 1256 | annotate_frame_source_file_end (); |
112e8700 | 1257 | uiout->text (":"); |
8b93c638 | 1258 | annotate_frame_source_line (); |
112e8700 | 1259 | uiout->field_int ("line", sal.line); |
c5394b80 JM |
1260 | annotate_frame_source_end (); |
1261 | } | |
c906108c | 1262 | |
4e04028d | 1263 | if (pc_p && (funname == NULL || sal.symtab == NULL)) |
c906108c | 1264 | { |
6c95b8df PA |
1265 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1266 | get_frame_pc (frame)); | |
4d1eb6b4 | 1267 | |
c5394b80 | 1268 | if (lib) |
c906108c | 1269 | { |
c5394b80 | 1270 | annotate_frame_where (); |
112e8700 SM |
1271 | uiout->wrap_hint (" "); |
1272 | uiout->text (" from "); | |
1273 | uiout->field_string ("from", lib); | |
c906108c | 1274 | } |
c906108c | 1275 | } |
e514a9d6 | 1276 | |
666547aa | 1277 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1278 | do_cleanups (list_chain); |
112e8700 | 1279 | uiout->text ("\n"); |
8b93c638 | 1280 | do_cleanups (old_chain); |
c906108c SS |
1281 | } |
1282 | \f | |
c5aa993b | 1283 | |
a0d34a39 AB |
1284 | /* Read a frame specification in whatever the appropriate format is from |
1285 | FRAME_EXP. Call error() if the specification is in any way invalid (so | |
34f81801 SM |
1286 | this function never returns NULL). When SELECTED_FRAME_P is non-NULL |
1287 | set its target to indicate that the default selected frame was used. */ | |
c906108c | 1288 | |
1c8831c5 | 1289 | static struct frame_info * |
a0d34a39 | 1290 | parse_frame_specification (const char *frame_exp, int *selected_frame_p) |
c906108c | 1291 | { |
1c8831c5 AC |
1292 | int numargs; |
1293 | struct value *args[4]; | |
1294 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1295 | |
1c8831c5 AC |
1296 | if (frame_exp == NULL) |
1297 | numargs = 0; | |
1298 | else | |
c906108c | 1299 | { |
1c8831c5 AC |
1300 | numargs = 0; |
1301 | while (1) | |
c906108c | 1302 | { |
1c8831c5 AC |
1303 | char *addr_string; |
1304 | struct cleanup *cleanup; | |
1305 | const char *p; | |
1306 | ||
1307 | /* Skip leading white space, bail of EOL. */ | |
529480d0 | 1308 | frame_exp = skip_spaces_const (frame_exp); |
1c8831c5 AC |
1309 | if (!*frame_exp) |
1310 | break; | |
c906108c | 1311 | |
1c8831c5 AC |
1312 | /* Parse the argument, extract it, save it. */ |
1313 | for (p = frame_exp; | |
8d3fea16 | 1314 | *p && !ISSPACE (*p); |
1c8831c5 AC |
1315 | p++); |
1316 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1317 | frame_exp = p; |
1c8831c5 AC |
1318 | cleanup = make_cleanup (xfree, addr_string); |
1319 | ||
1320 | /* NOTE: Parse and evaluate expression, but do not use | |
1321 | functions such as parse_and_eval_long or | |
1322 | parse_and_eval_address to also extract the value. | |
1323 | Instead value_as_long and value_as_address are used. | |
1324 | This avoids problems with expressions that contain | |
1325 | side-effects. */ | |
1326 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1327 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1328 | args[numargs++] = parse_and_eval (addr_string); |
1329 | ||
1330 | do_cleanups (cleanup); | |
c906108c SS |
1331 | } |
1332 | } | |
1333 | ||
1c8831c5 AC |
1334 | /* If no args, default to the selected frame. */ |
1335 | if (numargs == 0) | |
c906108c | 1336 | { |
1c8831c5 AC |
1337 | if (selected_frame_p != NULL) |
1338 | (*selected_frame_p) = 1; | |
a0d34a39 | 1339 | return get_selected_frame (_("No stack.")); |
1c8831c5 | 1340 | } |
c906108c | 1341 | |
1c8831c5 AC |
1342 | /* None of the remaining use the selected frame. */ |
1343 | if (selected_frame_p != NULL) | |
98f276a0 | 1344 | (*selected_frame_p) = 0; |
c906108c | 1345 | |
1c8831c5 AC |
1346 | /* Assume the single arg[0] is an integer, and try using that to |
1347 | select a frame relative to current. */ | |
1348 | if (numargs == 1) | |
1349 | { | |
1350 | struct frame_info *fid; | |
1351 | int level = value_as_long (args[0]); | |
433759f7 | 1352 | |
1c8831c5 AC |
1353 | fid = find_relative_frame (get_current_frame (), &level); |
1354 | if (level == 0) | |
c378eb4e | 1355 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1356 | return fid; |
1357 | } | |
c906108c | 1358 | |
1c8831c5 AC |
1359 | /* Convert each value into a corresponding address. */ |
1360 | { | |
1361 | int i; | |
433759f7 | 1362 | |
1c8831c5 | 1363 | for (i = 0; i < numargs; i++) |
1e275f79 | 1364 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1365 | } |
c5aa993b | 1366 | |
1c8831c5 AC |
1367 | /* Assume that the single arg[0] is an address, use that to identify |
1368 | a frame with a matching ID. Should this also accept stack/pc or | |
1369 | stack/pc/special. */ | |
1370 | if (numargs == 1) | |
1371 | { | |
1372 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1373 | struct frame_info *fid; | |
1374 | ||
1c8831c5 AC |
1375 | /* If (s)he specifies the frame with an address, he deserves |
1376 | what (s)he gets. Still, give the highest one that matches. | |
1377 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1378 | know). */ | |
1379 | for (fid = get_current_frame (); | |
1380 | fid != NULL; | |
1381 | fid = get_prev_frame (fid)) | |
1382 | { | |
1383 | if (frame_id_eq (id, get_frame_id (fid))) | |
1384 | { | |
c7ce8faa DJ |
1385 | struct frame_info *prev_frame; |
1386 | ||
1387 | while (1) | |
1388 | { | |
1389 | prev_frame = get_prev_frame (fid); | |
1390 | if (!prev_frame | |
1391 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1392 | break; | |
1393 | fid = prev_frame; | |
1394 | } | |
1c8831c5 AC |
1395 | return fid; |
1396 | } | |
1397 | } | |
c906108c SS |
1398 | } |
1399 | ||
1c8831c5 AC |
1400 | /* We couldn't identify the frame as an existing frame, but |
1401 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1402 | if (numargs == 1) |
1403 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1404 | else if (numargs == 2) |
1405 | return create_new_frame (addrs[0], addrs[1]); | |
1406 | else | |
8a3fe4f8 | 1407 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1408 | } |
1409 | ||
033a42c2 MK |
1410 | /* Print verbosely the selected frame or the frame at address |
1411 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1412 | |
1413 | static void | |
fba45db2 | 1414 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1415 | { |
1416 | struct frame_info *fi; | |
1417 | struct symtab_and_line sal; | |
1418 | struct symbol *func; | |
1419 | struct symtab *s; | |
1420 | struct frame_info *calling_frame_info; | |
167e4384 | 1421 | int numregs; |
0d5cff50 | 1422 | const char *funname = 0; |
c906108c | 1423 | enum language funlang = language_unknown; |
82de1e5b | 1424 | const char *pc_regname; |
1c8831c5 | 1425 | int selected_frame_p; |
7500260a | 1426 | struct gdbarch *gdbarch; |
3567439c | 1427 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1428 | CORE_ADDR frame_pc; |
1429 | int frame_pc_p; | |
e5e6f788 YQ |
1430 | /* Initialize it to avoid "may be used uninitialized" warning. */ |
1431 | CORE_ADDR caller_pc = 0; | |
492d29ea | 1432 | int caller_pc_p = 0; |
c906108c | 1433 | |
a0d34a39 | 1434 | fi = parse_frame_specification (addr_exp, &selected_frame_p); |
12368003 | 1435 | gdbarch = get_frame_arch (fi); |
c906108c | 1436 | |
82de1e5b AC |
1437 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1438 | is not a good name. */ | |
12368003 | 1439 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1440 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1441 | easily not match that of the internal value returned by |
1442 | get_frame_pc(). */ | |
12368003 | 1443 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1444 | else |
3e8c568d | 1445 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1446 | architectures will often have a hardware register called "pc", |
1447 | and that register's value, again, can easily not match | |
1448 | get_frame_pc(). */ | |
1449 | pc_regname = "pc"; | |
1450 | ||
008f8f2e | 1451 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1452 | find_frame_sal (fi, &sal); |
c906108c | 1453 | func = get_frame_function (fi); |
008f8f2e | 1454 | s = sal.symtab; |
c906108c SS |
1455 | if (func) |
1456 | { | |
3567439c | 1457 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1458 | funlang = SYMBOL_LANGUAGE (func); |
1459 | if (funlang == language_cplus) | |
1460 | { | |
3567439c DJ |
1461 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1462 | to display the demangled name that we already have | |
1463 | stored in the symbol table, but we stored a version | |
1464 | with DMGL_PARAMS turned on, and here we don't want to | |
1465 | display parameters. So remove the parameters. */ | |
1466 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1467 | |
3567439c DJ |
1468 | if (func_only) |
1469 | { | |
1470 | funname = func_only; | |
1471 | make_cleanup (xfree, func_only); | |
1472 | } | |
c5aa993b | 1473 | } |
c906108c | 1474 | } |
008f8f2e | 1475 | else if (frame_pc_p) |
c906108c | 1476 | { |
7cbd4a93 | 1477 | struct bound_minimal_symbol msymbol; |
033a42c2 | 1478 | |
008f8f2e | 1479 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
7cbd4a93 | 1480 | if (msymbol.minsym != NULL) |
c906108c | 1481 | { |
efd66ac6 TT |
1482 | funname = MSYMBOL_PRINT_NAME (msymbol.minsym); |
1483 | funlang = MSYMBOL_LANGUAGE (msymbol.minsym); | |
c906108c SS |
1484 | } |
1485 | } | |
1486 | calling_frame_info = get_prev_frame (fi); | |
1487 | ||
1c8831c5 | 1488 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1489 | { |
a3f17187 | 1490 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1491 | frame_relative_level (fi)); |
c906108c SS |
1492 | } |
1493 | else | |
1494 | { | |
a3f17187 | 1495 | printf_filtered (_("Stack frame at ")); |
c906108c | 1496 | } |
5af949e3 | 1497 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1498 | printf_filtered (":\n"); |
82de1e5b | 1499 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1500 | if (frame_pc_p) |
1501 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1502 | else | |
1503 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1504 | |
1505 | wrap_here (" "); | |
1506 | if (funname) | |
1507 | { | |
1508 | printf_filtered (" in "); | |
1509 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1510 | DMGL_ANSI | DMGL_PARAMS); | |
1511 | } | |
1512 | wrap_here (" "); | |
1513 | if (sal.symtab) | |
05cba821 JK |
1514 | printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab), |
1515 | sal.line); | |
c906108c SS |
1516 | puts_filtered ("; "); |
1517 | wrap_here (" "); | |
782d47df PA |
1518 | printf_filtered ("saved %s = ", pc_regname); |
1519 | ||
a038fa3e | 1520 | if (!frame_id_p (frame_unwind_caller_id (fi))) |
c620c3e4 | 1521 | val_print_not_saved (gdb_stdout); |
a038fa3e | 1522 | else |
782d47df | 1523 | { |
a038fa3e | 1524 | TRY |
782d47df | 1525 | { |
a038fa3e MM |
1526 | caller_pc = frame_unwind_caller_pc (fi); |
1527 | caller_pc_p = 1; | |
782d47df | 1528 | } |
a038fa3e MM |
1529 | CATCH (ex, RETURN_MASK_ERROR) |
1530 | { | |
1531 | switch (ex.error) | |
1532 | { | |
1533 | case NOT_AVAILABLE_ERROR: | |
1534 | val_print_unavailable (gdb_stdout); | |
1535 | break; | |
1536 | case OPTIMIZED_OUT_ERROR: | |
1537 | val_print_not_saved (gdb_stdout); | |
1538 | break; | |
1539 | default: | |
1540 | fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message); | |
1541 | break; | |
1542 | } | |
1543 | } | |
1544 | END_CATCH | |
782d47df | 1545 | } |
492d29ea PA |
1546 | |
1547 | if (caller_pc_p) | |
782d47df | 1548 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
c906108c SS |
1549 | printf_filtered ("\n"); |
1550 | ||
55feb689 DJ |
1551 | if (calling_frame_info == NULL) |
1552 | { | |
1553 | enum unwind_stop_reason reason; | |
1554 | ||
1555 | reason = get_frame_unwind_stop_reason (fi); | |
1556 | if (reason != UNWIND_NO_REASON) | |
1557 | printf_filtered (_(" Outermost frame: %s\n"), | |
53e8a631 | 1558 | frame_stop_reason_string (fi)); |
55feb689 | 1559 | } |
111c6489 JK |
1560 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1561 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1562 | else if (get_frame_type (fi) == INLINE_FRAME) |
1563 | printf_filtered (" inlined into frame %d", | |
1564 | frame_relative_level (get_prev_frame (fi))); | |
1565 | else | |
c906108c SS |
1566 | { |
1567 | printf_filtered (" called by frame at "); | |
5af949e3 | 1568 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1569 | gdb_stdout); |
c906108c | 1570 | } |
75e3c1f9 | 1571 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1572 | puts_filtered (","); |
1573 | wrap_here (" "); | |
75e3c1f9 | 1574 | if (get_next_frame (fi)) |
c906108c SS |
1575 | { |
1576 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1577 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1578 | gdb_stdout); |
c906108c | 1579 | } |
75e3c1f9 | 1580 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1581 | puts_filtered ("\n"); |
55feb689 | 1582 | |
c906108c | 1583 | if (s) |
1058bca7 AC |
1584 | printf_filtered (" source language %s.\n", |
1585 | language_str (s->language)); | |
c906108c | 1586 | |
c906108c SS |
1587 | { |
1588 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1589 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1590 | /* Number of args for this frame, or -1 if unknown. */ |
1591 | int numargs; | |
1592 | ||
1593 | if (arg_list == 0) | |
1594 | printf_filtered (" Arglist at unknown address.\n"); | |
1595 | else | |
1596 | { | |
1597 | printf_filtered (" Arglist at "); | |
5af949e3 | 1598 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1599 | printf_filtered (","); |
1600 | ||
7500260a | 1601 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1602 | { |
1603 | numargs = -1; | |
1604 | puts_filtered (" args: "); | |
1605 | } | |
c906108c | 1606 | else |
983a287a | 1607 | { |
7500260a | 1608 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1609 | gdb_assert (numargs >= 0); |
1610 | if (numargs == 0) | |
1611 | puts_filtered (" no args."); | |
1612 | else if (numargs == 1) | |
1613 | puts_filtered (" 1 arg: "); | |
1614 | else | |
1615 | printf_filtered (" %d args: ", numargs); | |
1616 | } | |
c906108c SS |
1617 | print_frame_args (func, fi, numargs, gdb_stdout); |
1618 | puts_filtered ("\n"); | |
1619 | } | |
1620 | } | |
1621 | { | |
1622 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1623 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1624 | |
1625 | if (arg_list == 0) | |
1626 | printf_filtered (" Locals at unknown address,"); | |
1627 | else | |
1628 | { | |
1629 | printf_filtered (" Locals at "); | |
5af949e3 | 1630 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1631 | printf_filtered (","); |
1632 | } | |
1633 | } | |
1634 | ||
4f460812 AC |
1635 | /* Print as much information as possible on the location of all the |
1636 | registers. */ | |
1637 | { | |
1638 | enum lval_type lval; | |
1639 | int optimized; | |
0fdb4f18 | 1640 | int unavailable; |
4f460812 AC |
1641 | CORE_ADDR addr; |
1642 | int realnum; | |
1643 | int count; | |
1644 | int i; | |
1645 | int need_nl = 1; | |
1646 | ||
1647 | /* The sp is special; what's displayed isn't the save address, but | |
1648 | the value of the previous frame's sp. This is a legacy thing, | |
1649 | at one stage the frame cached the previous frame's SP instead | |
1650 | of its address, hence it was easiest to just display the cached | |
1651 | value. */ | |
7500260a | 1652 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1653 | { |
1654 | /* Find out the location of the saved stack pointer with out | |
1655 | actually evaluating it. */ | |
7500260a | 1656 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1657 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1658 | &realnum, NULL); |
0fdb4f18 | 1659 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1660 | { |
e17a4113 UW |
1661 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1662 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1663 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1664 | CORE_ADDR sp; |
433759f7 | 1665 | |
7500260a | 1666 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1667 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1668 | &realnum, value); |
af1342ab AC |
1669 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1670 | stack pointer was packed as an unsigned integer. That | |
1671 | may or may not be valid. */ | |
e17a4113 | 1672 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1673 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1674 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1675 | printf_filtered ("\n"); |
1676 | need_nl = 0; | |
c906108c | 1677 | } |
0fdb4f18 | 1678 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1679 | { |
1680 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1681 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1682 | printf_filtered ("\n"); |
1683 | need_nl = 0; | |
1684 | } | |
0fdb4f18 | 1685 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1686 | { |
1687 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1688 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1689 | need_nl = 0; |
1690 | } | |
1691 | /* else keep quiet. */ | |
1692 | } | |
1693 | ||
1694 | count = 0; | |
7500260a UW |
1695 | numregs = gdbarch_num_regs (gdbarch) |
1696 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1697 | for (i = 0; i < numregs; i++) |
7500260a UW |
1698 | if (i != gdbarch_sp_regnum (gdbarch) |
1699 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1700 | { |
1701 | /* Find out the location of the saved register without | |
1702 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1703 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1704 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1705 | /* For moment, only display registers that were saved on the |
1706 | stack. */ | |
0fdb4f18 | 1707 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1708 | { |
1709 | if (count == 0) | |
1710 | puts_filtered (" Saved registers:\n "); | |
1711 | else | |
1712 | puts_filtered (","); | |
1713 | wrap_here (" "); | |
c9f4d572 | 1714 | printf_filtered (" %s at ", |
7500260a | 1715 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1716 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1717 | count++; |
1718 | } | |
1719 | } | |
1720 | if (count || need_nl) | |
c906108c | 1721 | puts_filtered ("\n"); |
4f460812 | 1722 | } |
3567439c DJ |
1723 | |
1724 | do_cleanups (back_to); | |
c906108c SS |
1725 | } |
1726 | ||
033a42c2 MK |
1727 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1728 | frames. */ | |
c906108c SS |
1729 | |
1730 | static void | |
1e611234 PM |
1731 | backtrace_command_1 (char *count_exp, int show_locals, int no_filters, |
1732 | int from_tty) | |
c906108c SS |
1733 | { |
1734 | struct frame_info *fi; | |
52f0bd74 AC |
1735 | int count; |
1736 | int i; | |
1737 | struct frame_info *trailing; | |
1e611234 | 1738 | int trailing_level, py_start = 0, py_end = 0; |
6dddc817 | 1739 | enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
c906108c SS |
1740 | |
1741 | if (!target_has_stack) | |
8a3fe4f8 | 1742 | error (_("No stack.")); |
c906108c | 1743 | |
033a42c2 MK |
1744 | /* The following code must do two things. First, it must set the |
1745 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1746 | printing. Second, it must set the variable count to the number |
1747 | of frames which we should print, or -1 if all of them. */ | |
1748 | trailing = get_current_frame (); | |
d082b2bb | 1749 | |
c906108c SS |
1750 | trailing_level = 0; |
1751 | if (count_exp) | |
1752 | { | |
bb518678 | 1753 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1754 | if (count < 0) |
1755 | { | |
1756 | struct frame_info *current; | |
1757 | ||
1e611234 | 1758 | py_start = count; |
c906108c SS |
1759 | count = -count; |
1760 | ||
1761 | current = trailing; | |
1762 | while (current && count--) | |
1763 | { | |
1764 | QUIT; | |
1765 | current = get_prev_frame (current); | |
1766 | } | |
c5aa993b | 1767 | |
033a42c2 MK |
1768 | /* Will stop when CURRENT reaches the top of the stack. |
1769 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1770 | while (current) |
1771 | { | |
1772 | QUIT; | |
1773 | trailing = get_prev_frame (trailing); | |
1774 | current = get_prev_frame (current); | |
1775 | trailing_level++; | |
1776 | } | |
c5aa993b | 1777 | |
c906108c SS |
1778 | count = -1; |
1779 | } | |
1e611234 PM |
1780 | else |
1781 | { | |
1782 | py_start = 0; | |
1783 | py_end = count; | |
1784 | } | |
c906108c SS |
1785 | } |
1786 | else | |
1e611234 PM |
1787 | { |
1788 | py_end = -1; | |
1789 | count = -1; | |
1790 | } | |
c906108c SS |
1791 | |
1792 | if (info_verbose) | |
1793 | { | |
033a42c2 MK |
1794 | /* Read in symbols for all of the frames. Need to do this in a |
1795 | separate pass so that "Reading in symbols for xxx" messages | |
1796 | don't screw up the appearance of the backtrace. Also if | |
1797 | people have strong opinions against reading symbols for | |
c5aa993b | 1798 | backtrace this may have to be an option. */ |
c906108c | 1799 | i = count; |
033a42c2 | 1800 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1801 | { |
ccefe4c4 | 1802 | CORE_ADDR pc; |
433759f7 | 1803 | |
c906108c | 1804 | QUIT; |
ccefe4c4 | 1805 | pc = get_frame_address_in_block (fi); |
2097ae25 | 1806 | expand_symtab_containing_pc (pc, find_pc_mapped_section (pc)); |
c906108c SS |
1807 | } |
1808 | } | |
1809 | ||
1e611234 | 1810 | if (! no_filters) |
c906108c | 1811 | { |
1e611234 | 1812 | int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS; |
6dddc817 | 1813 | enum ext_lang_frame_args arg_type; |
c906108c | 1814 | |
c906108c | 1815 | if (show_locals) |
1e611234 PM |
1816 | flags |= PRINT_LOCALS; |
1817 | ||
1818 | if (!strcmp (print_frame_arguments, "scalars")) | |
1819 | arg_type = CLI_SCALAR_VALUES; | |
1820 | else if (!strcmp (print_frame_arguments, "all")) | |
1821 | arg_type = CLI_ALL_VALUES; | |
1822 | else | |
1823 | arg_type = NO_VALUES; | |
1824 | ||
6dddc817 DE |
1825 | result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
1826 | arg_type, current_uiout, | |
1827 | py_start, py_end); | |
1e611234 | 1828 | } |
6dddc817 | 1829 | |
1e611234 PM |
1830 | /* Run the inbuilt backtrace if there are no filters registered, or |
1831 | "no-filters" has been specified from the command. */ | |
6dddc817 | 1832 | if (no_filters || result == EXT_LANG_BT_NO_FILTERS) |
1e611234 PM |
1833 | { |
1834 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) | |
1835 | { | |
1836 | QUIT; | |
1837 | ||
1838 | /* Don't use print_stack_frame; if an error() occurs it probably | |
1839 | means further attempts to backtrace would fail (on the other | |
1840 | hand, perhaps the code does or could be fixed to make sure | |
1841 | the frame->prev field gets set to NULL in that case). */ | |
1842 | ||
08d72866 | 1843 | print_frame_info (fi, 1, LOCATION, 1, 0); |
1e611234 | 1844 | if (show_locals) |
d0548fa2 PM |
1845 | { |
1846 | struct frame_id frame_id = get_frame_id (fi); | |
8f043999 | 1847 | |
d0548fa2 | 1848 | print_frame_local_vars (fi, 1, gdb_stdout); |
8f043999 | 1849 | |
d0548fa2 PM |
1850 | /* print_frame_local_vars invalidates FI. */ |
1851 | fi = frame_find_by_id (frame_id); | |
1852 | if (fi == NULL) | |
1853 | { | |
1854 | trailing = NULL; | |
1855 | warning (_("Unable to restore previously selected frame.")); | |
1856 | break; | |
1857 | } | |
8f043999 | 1858 | } |
55feb689 | 1859 | |
1e611234 PM |
1860 | /* Save the last frame to check for error conditions. */ |
1861 | trailing = fi; | |
1862 | } | |
c906108c | 1863 | |
1e611234 PM |
1864 | /* If we've stopped before the end, mention that. */ |
1865 | if (fi && from_tty) | |
1866 | printf_filtered (_("(More stack frames follow...)\n")); | |
55feb689 | 1867 | |
1e611234 PM |
1868 | /* If we've run out of frames, and the reason appears to be an error |
1869 | condition, print it. */ | |
1870 | if (fi == NULL && trailing != NULL) | |
1871 | { | |
1872 | enum unwind_stop_reason reason; | |
55feb689 | 1873 | |
1e611234 PM |
1874 | reason = get_frame_unwind_stop_reason (trailing); |
1875 | if (reason >= UNWIND_FIRST_ERROR) | |
1876 | printf_filtered (_("Backtrace stopped: %s\n"), | |
53e8a631 | 1877 | frame_stop_reason_string (trailing)); |
1e611234 | 1878 | } |
55feb689 | 1879 | } |
c906108c SS |
1880 | } |
1881 | ||
1882 | static void | |
fba45db2 | 1883 | backtrace_command (char *arg, int from_tty) |
c906108c | 1884 | { |
5fe41fbf | 1885 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
1e611234 PM |
1886 | int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1; |
1887 | int user_arg = 0; | |
c906108c | 1888 | |
033a42c2 | 1889 | if (arg) |
c906108c | 1890 | { |
033a42c2 | 1891 | char **argv; |
c906108c SS |
1892 | int i; |
1893 | ||
d1a41061 | 1894 | argv = gdb_buildargv (arg); |
5fe41fbf | 1895 | make_cleanup_freeargv (argv); |
c906108c | 1896 | argc = 0; |
033a42c2 | 1897 | for (i = 0; argv[i]; i++) |
c5aa993b | 1898 | { |
745b8ca0 | 1899 | unsigned int j; |
c5aa993b | 1900 | |
033a42c2 | 1901 | for (j = 0; j < strlen (argv[i]); j++) |
8d3fea16 | 1902 | argv[i][j] = TOLOWER (argv[i][j]); |
c5aa993b | 1903 | |
1e611234 PM |
1904 | if (no_filters < 0 && subset_compare (argv[i], "no-filters")) |
1905 | no_filters = argc; | |
c5aa993b JM |
1906 | else |
1907 | { | |
1e611234 PM |
1908 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1909 | fulltrace_arg = argc; | |
1910 | else | |
1911 | { | |
1912 | user_arg++; | |
1913 | arglen += strlen (argv[i]); | |
1914 | } | |
c5aa993b | 1915 | } |
1e611234 | 1916 | argc++; |
c5aa993b | 1917 | } |
1e611234 PM |
1918 | arglen += user_arg; |
1919 | if (fulltrace_arg >= 0 || no_filters >= 0) | |
c5aa993b | 1920 | { |
033a42c2 | 1921 | if (arglen > 0) |
c5aa993b | 1922 | { |
224c3ddb | 1923 | arg = (char *) xmalloc (arglen + 1); |
b1d288d3 JK |
1924 | make_cleanup (xfree, arg); |
1925 | arg[0] = 0; | |
1e611234 | 1926 | for (i = 0; i < argc; i++) |
c5aa993b | 1927 | { |
1e611234 | 1928 | if (i != fulltrace_arg && i != no_filters) |
c5aa993b | 1929 | { |
033a42c2 MK |
1930 | strcat (arg, argv[i]); |
1931 | strcat (arg, " "); | |
c5aa993b JM |
1932 | } |
1933 | } | |
1934 | } | |
1935 | else | |
033a42c2 | 1936 | arg = NULL; |
c5aa993b | 1937 | } |
c906108c SS |
1938 | } |
1939 | ||
1e611234 PM |
1940 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, |
1941 | no_filters >= 0 /* no frame-filters */, from_tty); | |
c906108c | 1942 | |
5fe41fbf | 1943 | do_cleanups (old_chain); |
c906108c SS |
1944 | } |
1945 | ||
2c58c0a9 PA |
1946 | /* Iterate over the local variables of a block B, calling CB with |
1947 | CB_DATA. */ | |
c906108c | 1948 | |
2c58c0a9 | 1949 | static void |
3977b71f | 1950 | iterate_over_block_locals (const struct block *b, |
2c58c0a9 PA |
1951 | iterate_over_block_arg_local_vars_cb cb, |
1952 | void *cb_data) | |
c906108c | 1953 | { |
8157b174 | 1954 | struct block_iterator iter; |
de4f826b | 1955 | struct symbol *sym; |
c906108c | 1956 | |
de4f826b | 1957 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1958 | { |
c906108c SS |
1959 | switch (SYMBOL_CLASS (sym)) |
1960 | { | |
1961 | case LOC_LOCAL: | |
1962 | case LOC_REGISTER: | |
1963 | case LOC_STATIC: | |
4c2df51b | 1964 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1965 | if (SYMBOL_IS_ARGUMENT (sym)) |
1966 | break; | |
4357ac6c TT |
1967 | if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN) |
1968 | break; | |
2c58c0a9 | 1969 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1970 | break; |
1971 | ||
1972 | default: | |
1973 | /* Ignore symbols which are not locals. */ | |
1974 | break; | |
1975 | } | |
1976 | } | |
c906108c SS |
1977 | } |
1978 | ||
65c06092 | 1979 | |
c906108c SS |
1980 | /* Same, but print labels. */ |
1981 | ||
65c06092 JB |
1982 | #if 0 |
1983 | /* Commented out, as the code using this function has also been | |
1984 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1985 | was commented out in the first place. The discussion introducing | |
1986 | this change (2007-12-04: Support lexical blocks and function bodies | |
1987 | that occupy non-contiguous address ranges) did not explain why | |
1988 | this change was made. */ | |
c906108c | 1989 | static int |
5af949e3 UW |
1990 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1991 | int *have_default, struct ui_file *stream) | |
c906108c | 1992 | { |
8157b174 | 1993 | struct block_iterator iter; |
52f0bd74 AC |
1994 | struct symbol *sym; |
1995 | int values_printed = 0; | |
c906108c | 1996 | |
de4f826b | 1997 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1998 | { |
3567439c | 1999 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
2000 | { |
2001 | if (*have_default) | |
2002 | continue; | |
2003 | *have_default = 1; | |
2004 | } | |
2005 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
2006 | { | |
2007 | struct symtab_and_line sal; | |
79a45b7d | 2008 | struct value_print_options opts; |
433759f7 | 2009 | |
c906108c SS |
2010 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
2011 | values_printed = 1; | |
de5ad195 | 2012 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
2013 | get_user_print_options (&opts); |
2014 | if (opts.addressprint) | |
c906108c SS |
2015 | { |
2016 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
2017 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
2018 | stream); | |
c906108c SS |
2019 | } |
2020 | fprintf_filtered (stream, " in file %s, line %d\n", | |
2021 | sal.symtab->filename, sal.line); | |
2022 | } | |
2023 | } | |
033a42c2 | 2024 | |
c906108c SS |
2025 | return values_printed; |
2026 | } | |
65c06092 | 2027 | #endif |
c906108c | 2028 | |
2c58c0a9 PA |
2029 | /* Iterate over all the local variables in block B, including all its |
2030 | superblocks, stopping when the top-level block is reached. */ | |
2031 | ||
2032 | void | |
3977b71f | 2033 | iterate_over_block_local_vars (const struct block *block, |
2c58c0a9 PA |
2034 | iterate_over_block_arg_local_vars_cb cb, |
2035 | void *cb_data) | |
2036 | { | |
2037 | while (block) | |
2038 | { | |
2039 | iterate_over_block_locals (block, cb, cb_data); | |
2040 | /* After handling the function's top-level block, stop. Don't | |
2041 | continue to its superblock, the block of per-file | |
2042 | symbols. */ | |
2043 | if (BLOCK_FUNCTION (block)) | |
2044 | break; | |
2045 | block = BLOCK_SUPERBLOCK (block); | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | /* Data to be passed around in the calls to the locals and args | |
2050 | iterators. */ | |
c906108c | 2051 | |
2c58c0a9 PA |
2052 | struct print_variable_and_value_data |
2053 | { | |
8f043999 | 2054 | struct frame_id frame_id; |
2c58c0a9 PA |
2055 | int num_tabs; |
2056 | struct ui_file *stream; | |
2057 | int values_printed; | |
2058 | }; | |
2059 | ||
c378eb4e | 2060 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
2061 | |
2062 | static void | |
2063 | do_print_variable_and_value (const char *print_name, | |
2064 | struct symbol *sym, | |
2065 | void *cb_data) | |
2066 | { | |
19ba03f4 SM |
2067 | struct print_variable_and_value_data *p |
2068 | = (struct print_variable_and_value_data *) cb_data; | |
8f043999 JK |
2069 | struct frame_info *frame; |
2070 | ||
2071 | frame = frame_find_by_id (p->frame_id); | |
2072 | if (frame == NULL) | |
2073 | { | |
2074 | warning (_("Unable to restore previously selected frame.")); | |
2075 | return; | |
2076 | } | |
2077 | ||
2078 | print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs); | |
2079 | ||
2080 | /* print_variable_and_value invalidates FRAME. */ | |
2081 | frame = NULL; | |
2c58c0a9 | 2082 | |
2c58c0a9 PA |
2083 | p->values_printed = 1; |
2084 | } | |
c906108c | 2085 | |
8f043999 JK |
2086 | /* Print all variables from the innermost up to the function block of FRAME. |
2087 | Print them with values to STREAM indented by NUM_TABS. | |
2088 | ||
2089 | This function will invalidate FRAME. */ | |
2090 | ||
c906108c | 2091 | static void |
033a42c2 | 2092 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 2093 | struct ui_file *stream) |
c906108c | 2094 | { |
2c58c0a9 | 2095 | struct print_variable_and_value_data cb_data; |
3977b71f | 2096 | const struct block *block; |
1d4f5741 | 2097 | CORE_ADDR pc; |
16c3b12f | 2098 | struct gdb_exception except = exception_none; |
1d4f5741 PA |
2099 | |
2100 | if (!get_frame_pc_if_available (frame, &pc)) | |
2101 | { | |
2102 | fprintf_filtered (stream, | |
2103 | _("PC unavailable, cannot determine locals.\n")); | |
2104 | return; | |
2105 | } | |
c906108c | 2106 | |
2c58c0a9 | 2107 | block = get_frame_block (frame, 0); |
c906108c SS |
2108 | if (block == 0) |
2109 | { | |
2110 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
2111 | return; | |
2112 | } | |
c5aa993b | 2113 | |
8f043999 | 2114 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2115 | cb_data.num_tabs = 4 * num_tabs; |
2116 | cb_data.stream = stream; | |
2117 | cb_data.values_printed = 0; | |
2118 | ||
16c3b12f JB |
2119 | /* Temporarily change the selected frame to the given FRAME. |
2120 | This allows routines that rely on the selected frame instead | |
2121 | of being given a frame as parameter to use the correct frame. */ | |
2122 | select_frame (frame); | |
2123 | ||
2124 | TRY | |
2125 | { | |
2126 | iterate_over_block_local_vars (block, | |
2127 | do_print_variable_and_value, | |
2128 | &cb_data); | |
2129 | } | |
2130 | CATCH (ex, RETURN_MASK_ALL) | |
2131 | { | |
2132 | except = ex; | |
2133 | } | |
2134 | END_CATCH | |
2135 | ||
2136 | /* Restore the selected frame, and then rethrow if there was a problem. */ | |
2137 | select_frame (frame_find_by_id (cb_data.frame_id)); | |
2138 | if (except.reason < 0) | |
2139 | throw_exception (except); | |
c906108c | 2140 | |
8f043999 JK |
2141 | /* do_print_variable_and_value invalidates FRAME. */ |
2142 | frame = NULL; | |
2143 | ||
2c58c0a9 | 2144 | if (!cb_data.values_printed) |
033a42c2 | 2145 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
2146 | } |
2147 | ||
c906108c | 2148 | void |
fba45db2 | 2149 | locals_info (char *args, int from_tty) |
c906108c | 2150 | { |
033a42c2 | 2151 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2152 | 0, gdb_stdout); |
c906108c SS |
2153 | } |
2154 | ||
2c58c0a9 PA |
2155 | /* Iterate over all the argument variables in block B. |
2156 | ||
2157 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2158 | ||
2159 | void | |
3977b71f | 2160 | iterate_over_block_arg_vars (const struct block *b, |
2c58c0a9 PA |
2161 | iterate_over_block_arg_local_vars_cb cb, |
2162 | void *cb_data) | |
c906108c | 2163 | { |
8157b174 | 2164 | struct block_iterator iter; |
52f0bd74 | 2165 | struct symbol *sym, *sym2; |
c906108c | 2166 | |
de4f826b | 2167 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2168 | { |
2a2d4dc3 AS |
2169 | /* Don't worry about things which aren't arguments. */ |
2170 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2171 | { |
c906108c SS |
2172 | /* We have to look up the symbol because arguments can have |
2173 | two entries (one a parameter, one a local) and the one we | |
2174 | want is the local, which lookup_symbol will find for us. | |
2175 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2176 | small structure and gcc2 when the argument type is float | |
2177 | and it is passed as a double and converted to float by | |
2178 | the prologue (in the latter case the type of the LOC_ARG | |
2179 | symbol is double and the type of the LOC_LOCAL symbol is | |
2180 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2181 | are not combined in symbol-reading. */ | |
2182 | ||
3567439c | 2183 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
d12307c1 | 2184 | b, VAR_DOMAIN, NULL).symbol; |
2c58c0a9 | 2185 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2186 | } |
2187 | } | |
2c58c0a9 PA |
2188 | } |
2189 | ||
8f043999 JK |
2190 | /* Print all argument variables of the function of FRAME. |
2191 | Print them with values to STREAM. | |
2192 | ||
2193 | This function will invalidate FRAME. */ | |
2194 | ||
2c58c0a9 PA |
2195 | static void |
2196 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2197 | { | |
2198 | struct print_variable_and_value_data cb_data; | |
2199 | struct symbol *func; | |
1d4f5741 PA |
2200 | CORE_ADDR pc; |
2201 | ||
2202 | if (!get_frame_pc_if_available (frame, &pc)) | |
2203 | { | |
2204 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2205 | return; | |
2206 | } | |
2c58c0a9 PA |
2207 | |
2208 | func = get_frame_function (frame); | |
2209 | if (func == NULL) | |
2210 | { | |
2211 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2212 | return; | |
2213 | } | |
2214 | ||
8f043999 | 2215 | cb_data.frame_id = get_frame_id (frame); |
2c58c0a9 PA |
2216 | cb_data.num_tabs = 0; |
2217 | cb_data.stream = gdb_stdout; | |
2218 | cb_data.values_printed = 0; | |
2219 | ||
2220 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2221 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2222 | |
8f043999 JK |
2223 | /* do_print_variable_and_value invalidates FRAME. */ |
2224 | frame = NULL; | |
2225 | ||
2c58c0a9 | 2226 | if (!cb_data.values_printed) |
033a42c2 | 2227 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2228 | } |
2229 | ||
2230 | void | |
fba45db2 | 2231 | args_info (char *ignore, int from_tty) |
c906108c | 2232 | { |
033a42c2 | 2233 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2234 | gdb_stdout); |
c906108c SS |
2235 | } |
2236 | ||
033a42c2 MK |
2237 | /* Select frame FRAME. Also print the stack frame and show the source |
2238 | if this is the tui version. */ | |
bedfa57b | 2239 | static void |
033a42c2 | 2240 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2241 | { |
033a42c2 MK |
2242 | select_frame (frame); |
2243 | if (frame) | |
08d72866 | 2244 | print_stack_frame (frame, 1, SRC_AND_LOC, 1); |
c906108c | 2245 | } |
c906108c | 2246 | \f |
c906108c | 2247 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2248 | Can return zero under various legitimate circumstances. |
2249 | ||
2250 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2251 | code address within the block returned. We use this to decide | |
2252 | which macros are in scope. */ | |
c906108c | 2253 | |
3977b71f | 2254 | const struct block * |
ae767bfb | 2255 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2256 | { |
d729566a | 2257 | if (!has_stack_frames ()) |
8ea051c5 PA |
2258 | return 0; |
2259 | ||
206415a3 | 2260 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2261 | } |
2262 | ||
2263 | /* Find a frame a certain number of levels away from FRAME. | |
2264 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2265 | Positive means go to earlier frames (up); negative, the reverse. | |
2266 | The int that contains the number of levels is counted toward | |
2267 | zero as the frames for those levels are found. | |
2268 | If the top or bottom frame is reached, that frame is returned, | |
2269 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2270 | how much farther the original request asked to go. */ | |
2271 | ||
2272 | struct frame_info * | |
033a42c2 | 2273 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2274 | { |
033a42c2 MK |
2275 | /* Going up is simple: just call get_prev_frame enough times or |
2276 | until the initial frame is reached. */ | |
c906108c SS |
2277 | while (*level_offset_ptr > 0) |
2278 | { | |
033a42c2 | 2279 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2280 | |
033a42c2 | 2281 | if (!prev) |
c906108c SS |
2282 | break; |
2283 | (*level_offset_ptr)--; | |
2284 | frame = prev; | |
2285 | } | |
033a42c2 | 2286 | |
c906108c | 2287 | /* Going down is just as simple. */ |
033a42c2 | 2288 | while (*level_offset_ptr < 0) |
c906108c | 2289 | { |
033a42c2 | 2290 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2291 | |
033a42c2 MK |
2292 | if (!next) |
2293 | break; | |
2294 | (*level_offset_ptr)++; | |
2295 | frame = next; | |
c906108c | 2296 | } |
033a42c2 | 2297 | |
c906108c SS |
2298 | return frame; |
2299 | } | |
2300 | ||
033a42c2 MK |
2301 | /* The "select_frame" command. With no argument this is a NOP. |
2302 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2303 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2304 | ||
2305 | See parse_frame_specification for more info on proper frame | |
2306 | expressions. */ | |
c906108c | 2307 | |
8b93c638 | 2308 | void |
fba45db2 | 2309 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2310 | { |
4034d0ff AT |
2311 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2312 | ||
a0d34a39 | 2313 | select_frame (parse_frame_specification (level_exp, NULL)); |
4034d0ff AT |
2314 | if (get_selected_frame_if_set () != prev_frame) |
2315 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); | |
c906108c SS |
2316 | } |
2317 | ||
033a42c2 MK |
2318 | /* The "frame" command. With no argument, print the selected frame |
2319 | briefly. With an argument, behave like select_frame and then print | |
2320 | the selected frame. */ | |
c906108c | 2321 | |
033a42c2 | 2322 | static void |
fba45db2 | 2323 | frame_command (char *level_exp, int from_tty) |
c906108c | 2324 | { |
4034d0ff AT |
2325 | struct frame_info *prev_frame = get_selected_frame_if_set (); |
2326 | ||
2327 | select_frame (parse_frame_specification (level_exp, NULL)); | |
2328 | if (get_selected_frame_if_set () != prev_frame) | |
2329 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); | |
2330 | else | |
2331 | print_selected_thread_frame (current_uiout, USER_SELECTED_FRAME); | |
c906108c SS |
2332 | } |
2333 | ||
033a42c2 MK |
2334 | /* Select the frame up one or COUNT_EXP stack levels from the |
2335 | previously selected frame, and print it briefly. */ | |
c906108c | 2336 | |
c906108c | 2337 | static void |
d3d3328b | 2338 | up_silently_base (const char *count_exp) |
c906108c | 2339 | { |
033a42c2 MK |
2340 | struct frame_info *frame; |
2341 | int count = 1; | |
2342 | ||
c906108c | 2343 | if (count_exp) |
bb518678 | 2344 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2345 | |
033a42c2 MK |
2346 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2347 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2348 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2349 | select_frame (frame); |
c906108c SS |
2350 | } |
2351 | ||
2352 | static void | |
fba45db2 | 2353 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2354 | { |
c5aa993b | 2355 | up_silently_base (count_exp); |
c906108c SS |
2356 | } |
2357 | ||
2358 | static void | |
fba45db2 | 2359 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2360 | { |
2361 | up_silently_base (count_exp); | |
4034d0ff | 2362 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); |
c906108c SS |
2363 | } |
2364 | ||
033a42c2 MK |
2365 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2366 | selected frame, and print it briefly. */ | |
c906108c | 2367 | |
c906108c | 2368 | static void |
d3d3328b | 2369 | down_silently_base (const char *count_exp) |
c906108c | 2370 | { |
52f0bd74 | 2371 | struct frame_info *frame; |
033a42c2 | 2372 | int count = -1; |
f89b749f | 2373 | |
c906108c | 2374 | if (count_exp) |
bb518678 | 2375 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2376 | |
033a42c2 MK |
2377 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2378 | if (count != 0 && count_exp == NULL) | |
c906108c | 2379 | { |
033a42c2 MK |
2380 | /* We only do this if COUNT_EXP is not specified. That way |
2381 | "down" means to really go down (and let me know if that is | |
2382 | impossible), but "down 9999" can be used to mean go all the | |
2383 | way down without getting an error. */ | |
c906108c | 2384 | |
033a42c2 | 2385 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2386 | } |
2387 | ||
0f7d239c | 2388 | select_frame (frame); |
c906108c SS |
2389 | } |
2390 | ||
c906108c | 2391 | static void |
fba45db2 | 2392 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2393 | { |
2394 | down_silently_base (count_exp); | |
c906108c SS |
2395 | } |
2396 | ||
2397 | static void | |
fba45db2 | 2398 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2399 | { |
2400 | down_silently_base (count_exp); | |
4034d0ff | 2401 | observer_notify_user_selected_context_changed (USER_SELECTED_FRAME); |
c906108c | 2402 | } |
033a42c2 | 2403 | |
8b93c638 | 2404 | void |
fba45db2 | 2405 | return_command (char *retval_exp, int from_tty) |
c906108c | 2406 | { |
901900c4 MGD |
2407 | /* Initialize it just to avoid a GCC false warning. */ |
2408 | enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION; | |
5ed92fa8 | 2409 | struct frame_info *thisframe; |
d80b854b | 2410 | struct gdbarch *gdbarch; |
c906108c | 2411 | struct symbol *thisfun; |
3d6d86c6 | 2412 | struct value *return_value = NULL; |
6a3a010b | 2413 | struct value *function = NULL; |
fc70c2a0 | 2414 | const char *query_prefix = ""; |
c906108c | 2415 | |
5ed92fa8 UW |
2416 | thisframe = get_selected_frame ("No selected frame."); |
2417 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2418 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2419 | |
edb3359d DJ |
2420 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2421 | error (_("Can not force return from an inlined function.")); | |
2422 | ||
fc70c2a0 AC |
2423 | /* Compute the return value. If the computation triggers an error, |
2424 | let it bail. If the return type can't be handled, set | |
2425 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2426 | message. */ | |
c906108c SS |
2427 | if (retval_exp) |
2428 | { | |
4d01a485 | 2429 | expression_up retval_expr = parse_expression (retval_exp); |
c906108c SS |
2430 | struct type *return_type = NULL; |
2431 | ||
fc70c2a0 AC |
2432 | /* Compute the return value. Should the computation fail, this |
2433 | call throws an error. */ | |
4d01a485 | 2434 | return_value = evaluate_expression (retval_expr.get ()); |
c906108c | 2435 | |
fc70c2a0 AC |
2436 | /* Cast return value to the return type of the function. Should |
2437 | the cast fail, this call throws an error. */ | |
c906108c SS |
2438 | if (thisfun != NULL) |
2439 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2440 | if (return_type == NULL) | |
61ff14c6 | 2441 | { |
9eaf6705 TT |
2442 | if (retval_expr->elts[0].opcode != UNOP_CAST |
2443 | && retval_expr->elts[0].opcode != UNOP_CAST_TYPE) | |
61ff14c6 JK |
2444 | error (_("Return value type not available for selected " |
2445 | "stack frame.\n" | |
2446 | "Please use an explicit cast of the value to return.")); | |
2447 | return_type = value_type (return_value); | |
2448 | } | |
f168693b | 2449 | return_type = check_typedef (return_type); |
c906108c SS |
2450 | return_value = value_cast (return_type, return_value); |
2451 | ||
fc70c2a0 AC |
2452 | /* Make sure the value is fully evaluated. It may live in the |
2453 | stack frame we're about to pop. */ | |
d69fe07e | 2454 | if (value_lazy (return_value)) |
c906108c | 2455 | value_fetch_lazy (return_value); |
c906108c | 2456 | |
6a3a010b | 2457 | if (thisfun != NULL) |
63e43d3a | 2458 | function = read_var_value (thisfun, NULL, thisframe); |
6a3a010b | 2459 | |
bbfdfe1c | 2460 | rv_conv = RETURN_VALUE_REGISTER_CONVENTION; |
667e784f AC |
2461 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2462 | /* If the return-type is "void", don't try to find the | |
2463 | return-value's location. However, do still evaluate the | |
2464 | return expression so that, even when the expression result | |
2465 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2466 | occur. */ |
667e784f | 2467 | return_value = NULL; |
bbfdfe1c | 2468 | else if (thisfun != NULL) |
fc70c2a0 | 2469 | { |
bbfdfe1c DM |
2470 | rv_conv = struct_return_convention (gdbarch, function, return_type); |
2471 | if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION | |
2472 | || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS) | |
2473 | { | |
2474 | query_prefix = "The location at which to store the " | |
2475 | "function's return value is unknown.\n" | |
2476 | "If you continue, the return value " | |
2477 | "that you specified will be ignored.\n"; | |
2478 | return_value = NULL; | |
2479 | } | |
fc70c2a0 | 2480 | } |
c906108c SS |
2481 | } |
2482 | ||
fc70c2a0 AC |
2483 | /* Does an interactive user really want to do this? Include |
2484 | information, such as how well GDB can handle the return value, in | |
2485 | the query message. */ | |
2486 | if (from_tty) | |
2487 | { | |
2488 | int confirmed; | |
433759f7 | 2489 | |
fc70c2a0 | 2490 | if (thisfun == NULL) |
e2e0b3e5 | 2491 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2492 | query_prefix); |
2493 | else | |
743649fd MW |
2494 | { |
2495 | if (TYPE_NO_RETURN (thisfun->type)) | |
d35b90fb | 2496 | warning (_("Function does not return normally to caller.")); |
743649fd MW |
2497 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
2498 | SYMBOL_PRINT_NAME (thisfun)); | |
2499 | } | |
fc70c2a0 | 2500 | if (!confirmed) |
8a3fe4f8 | 2501 | error (_("Not confirmed")); |
fc70c2a0 | 2502 | } |
c906108c | 2503 | |
a45ae3ed UW |
2504 | /* Discard the selected frame and all frames inner-to it. */ |
2505 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2506 | |
a1f5b845 | 2507 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2508 | if (return_value != NULL) |
2509 | { | |
df407dfe | 2510 | struct type *return_type = value_type (return_value); |
7500260a | 2511 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c | 2512 | |
bbfdfe1c DM |
2513 | gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION |
2514 | && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS); | |
6a3a010b | 2515 | gdbarch_return_value (gdbarch, function, return_type, |
594f7785 | 2516 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2517 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2518 | } |
1a2aab69 | 2519 | |
fc70c2a0 AC |
2520 | /* If we are at the end of a call dummy now, pop the dummy frame |
2521 | too. */ | |
e8bcf01f AC |
2522 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2523 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2524 | |
edbbff4a | 2525 | select_frame (get_current_frame ()); |
c906108c | 2526 | /* If interactive, print the frame that is now current. */ |
c906108c | 2527 | if (from_tty) |
edbbff4a | 2528 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
c906108c SS |
2529 | } |
2530 | ||
033a42c2 | 2531 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2532 | is within the current stack frame. */ |
c906108c SS |
2533 | |
2534 | struct function_bounds | |
2535 | { | |
2536 | CORE_ADDR low, high; | |
2537 | }; | |
2538 | ||
2539 | static void | |
fba45db2 | 2540 | func_command (char *arg, int from_tty) |
c906108c | 2541 | { |
033a42c2 | 2542 | struct frame_info *frame; |
c906108c SS |
2543 | int found = 0; |
2544 | struct symtabs_and_lines sals; | |
2545 | int i; | |
2546 | int level = 1; | |
033a42c2 | 2547 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2548 | struct cleanup *cleanups; |
c906108c | 2549 | |
9d622bda | 2550 | if (arg == NULL) |
c906108c SS |
2551 | return; |
2552 | ||
edbbff4a | 2553 | frame = get_current_frame (); |
39cf75f7 | 2554 | sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE); |
f8eba3c6 | 2555 | cleanups = make_cleanup (xfree, sals.sals); |
8d749320 | 2556 | func_bounds = XNEWVEC (struct function_bounds, sals.nelts); |
f8eba3c6 | 2557 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2558 | for (i = 0; (i < sals.nelts && !found); i++) |
2559 | { | |
f8eba3c6 TT |
2560 | if (sals.sals[i].pspace != current_program_space) |
2561 | func_bounds[i].low = func_bounds[i].high = 0; | |
2562 | else if (sals.sals[i].pc == 0 | |
2563 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2564 | &func_bounds[i].low, | |
2565 | &func_bounds[i].high) == 0) | |
c906108c | 2566 | { |
033a42c2 | 2567 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2568 | } |
2569 | } | |
2570 | ||
2571 | do | |
2572 | { | |
2573 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2574 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2575 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2576 | if (!found) |
2577 | { | |
2578 | level = 1; | |
033a42c2 | 2579 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2580 | } |
2581 | } | |
2582 | while (!found && level == 0); | |
2583 | ||
f8eba3c6 | 2584 | do_cleanups (cleanups); |
c906108c SS |
2585 | |
2586 | if (!found) | |
a3f17187 | 2587 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2588 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2589 | select_and_print_frame (frame); |
c906108c | 2590 | } |
c906108c | 2591 | \f |
033a42c2 MK |
2592 | |
2593 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2594 | void _initialize_stack (void); | |
2595 | ||
c906108c | 2596 | void |
fba45db2 | 2597 | _initialize_stack (void) |
c906108c | 2598 | { |
1bedd215 AC |
2599 | add_com ("return", class_stack, return_command, _("\ |
2600 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2601 | Control remains in the debugger, but when you continue\n\ |
2602 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2603 | If an argument is given, it is an expression for the value to return.")); |
2604 | ||
2605 | add_com ("up", class_stack, up_command, _("\ | |
2606 | Select and print stack frame that called this one.\n\ | |
2607 | An argument says how many frames up to go.")); | |
2608 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2609 | Same as the `up' command, but does not print anything.\n\ | |
2610 | This is useful in command scripts.")); | |
2611 | ||
2612 | add_com ("down", class_stack, down_command, _("\ | |
2613 | Select and print stack frame called by this one.\n\ | |
2614 | An argument says how many frames down to go.")); | |
c906108c SS |
2615 | add_com_alias ("do", "down", class_stack, 1); |
2616 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2617 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2618 | Same as the `down' command, but does not print anything.\n\ | |
2619 | This is useful in command scripts.")); | |
c906108c | 2620 | |
1bedd215 | 2621 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2622 | Select and print a stack frame.\nWith no argument, \ |
2623 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c | 2624 | An argument specifies the frame to select.\n\ |
df294654 | 2625 | It can be a stack frame number or the address of the frame.\n")); |
c906108c SS |
2626 | |
2627 | add_com_alias ("f", "frame", class_stack, 1); | |
2628 | ||
4034d0ff | 2629 | add_com_suppress_notification ("select-frame", class_stack, select_frame_command, _("\ |
1bedd215 | 2630 | Select a stack frame without printing anything.\n\ |
c906108c | 2631 | An argument specifies the frame to select.\n\ |
4034d0ff AT |
2632 | It can be a stack frame number or the address of the frame.\n"), |
2633 | &cli_suppress_notification.user_selected_context); | |
c906108c | 2634 | |
1bedd215 AC |
2635 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2636 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a | 2637 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
1e611234 PM |
2638 | 'full' qualifier also prints the values of the local variables.\n\ |
2639 | Use of the 'no-filters' qualifier prohibits frame filters from executing\n\ | |
2640 | on this backtrace.\n")); | |
c906108c | 2641 | add_com_alias ("bt", "backtrace", class_stack, 0); |
c906108c SS |
2642 | |
2643 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2644 | add_info ("stack", backtrace_command, | |
1bedd215 | 2645 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2646 | add_info_alias ("s", "stack", 1); |
2647 | add_info ("frame", frame_info, | |
1bedd215 | 2648 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2649 | add_info_alias ("f", "frame", 1); |
2650 | add_info ("locals", locals_info, | |
1bedd215 | 2651 | _("Local variables of current stack frame.")); |
c906108c | 2652 | add_info ("args", args_info, |
1bedd215 | 2653 | _("Argument variables of current stack frame.")); |
c906108c SS |
2654 | |
2655 | if (dbx_commands) | |
1bedd215 AC |
2656 | add_com ("func", class_stack, func_command, _("\ |
2657 | Select the stack frame that contains <func>.\n\ | |
2658 | Usage: func <name>\n")); | |
c906108c | 2659 | |
88408340 JB |
2660 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2661 | print_frame_arguments_choices, &print_frame_arguments, | |
2662 | _("Set printing of non-scalar frame arguments"), | |
2663 | _("Show printing of non-scalar frame arguments"), | |
2664 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2665 | ||
e7045703 DE |
2666 | add_setshow_boolean_cmd ("frame-arguments", no_class, |
2667 | &print_raw_frame_arguments, _("\ | |
2668 | Set whether to print frame arguments in raw form."), _("\ | |
2669 | Show whether to print frame arguments in raw form."), _("\ | |
2670 | If set, frame arguments are printed in raw form, bypassing any\n\ | |
2671 | pretty-printers for that value."), | |
2672 | NULL, NULL, | |
2673 | &setprintrawlist, &showprintrawlist); | |
2674 | ||
30c33a9f HZ |
2675 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2676 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2677 | Set whether to disassemble next source line or insn when execution stops."), |
2678 | _("\ | |
2679 | Show whether to disassemble next source line or insn when execution stops."), | |
2680 | _("\ | |
80a0ea0f EZ |
2681 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2682 | to displaying the source line itself. If the next source line cannot\n\ | |
2683 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2684 | will display disassembly of next instruction instead of showing the\n\ | |
2685 | source line.\n\ | |
2686 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2687 | cannot be displayed.\n\ | |
2688 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2689 | source line."), | |
30c33a9f HZ |
2690 | NULL, |
2691 | show_disassemble_next_line, | |
2692 | &setlist, &showlist); | |
a362e3d3 | 2693 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2694 | |
2695 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2696 | print_entry_values_choices, &print_entry_values, | |
2697 | _("Set printing of function arguments at function " | |
2698 | "entry"), | |
2699 | _("Show printing of function arguments at function " | |
2700 | "entry"), | |
2701 | _("\ | |
2702 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2703 | in addition to their current values. This option tells GDB whether\n\ | |
2704 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2705 | or both. Note that one or both of these values may be <optimized out>."), | |
2706 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2707 | } |