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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 19 | |
c906108c | 20 | #include "defs.h" |
c906108c SS |
21 | #include "value.h" |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "frame.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "gdbcore.h" | |
29 | #include "target.h" | |
0378c332 | 30 | #include "source.h" |
c906108c SS |
31 | #include "breakpoint.h" |
32 | #include "demangle.h" | |
33 | #include "inferior.h" | |
34 | #include "annotate.h" | |
8b93c638 | 35 | #include "ui-out.h" |
fe898f56 | 36 | #include "block.h" |
b9362cc7 | 37 | #include "stack.h" |
de4f826b | 38 | #include "dictionary.h" |
60250e8b | 39 | #include "exceptions.h" |
898c62f5 | 40 | #include "reggroups.h" |
fc70c2a0 | 41 | #include "regcache.h" |
a77053c2 | 42 | #include "solib.h" |
033a42c2 | 43 | #include "valprint.h" |
8ea051c5 | 44 | #include "gdbthread.h" |
3567439c | 45 | #include "cp-support.h" |
30c33a9f | 46 | #include "disasm.h" |
edb3359d | 47 | #include "inline-frame.h" |
f8eba3c6 | 48 | #include "linespec.h" |
c906108c | 49 | |
033a42c2 MK |
50 | #include "gdb_assert.h" |
51 | #include <ctype.h> | |
52 | #include "gdb_string.h" | |
c906108c | 53 | |
ccefe4c4 TT |
54 | #include "psymtab.h" |
55 | #include "symfile.h" | |
56 | ||
9a4105ab | 57 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 58 | |
2421fe6f | 59 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
60 | of this setting. */ |
61 | ||
62 | static const char *print_frame_arguments_choices[] = | |
63 | {"all", "scalars", "none", NULL}; | |
476f7b68 | 64 | static const char *print_frame_arguments = "scalars"; |
88408340 | 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"; | |
76 | static const char *print_entry_values_choices[] = | |
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 | ||
033a42c2 | 145 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
146 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
147 | relative level, function name, argument list, and file name and | |
148 | line number. If the frame's PC is not at the beginning of the | |
149 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
150 | |
151 | void | |
033a42c2 | 152 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 153 | enum print_what print_what) |
c906108c | 154 | { |
311b5970 | 155 | volatile struct gdb_exception e; |
c906108c | 156 | |
aaf9e9fd | 157 | /* For mi, alway print location and address. */ |
79a45e25 | 158 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 159 | print_what = LOC_AND_ADDRESS; |
c906108c | 160 | |
311b5970 JK |
161 | TRY_CATCH (e, RETURN_MASK_ERROR) |
162 | { | |
163 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); | |
c906108c | 164 | |
311b5970 JK |
165 | print_frame_info (frame, print_level, print_what, 1 /* print_args */); |
166 | set_current_sal_from_frame (frame, center); | |
167 | } | |
168 | } | |
c906108c | 169 | |
033a42c2 MK |
170 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
171 | the offset of the first nameless argument, and NUM is the number of | |
172 | nameless arguments to print. FIRST is nonzero if this is the first | |
173 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
174 | |
175 | static void | |
033a42c2 | 176 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
177 | int first, struct ui_file *stream) |
178 | { | |
e17a4113 UW |
179 | struct gdbarch *gdbarch = get_frame_arch (frame); |
180 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
181 | int i; |
182 | CORE_ADDR argsaddr; | |
183 | long arg_value; | |
184 | ||
185 | for (i = 0; i < num; i++) | |
186 | { | |
187 | QUIT; | |
033a42c2 | 188 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
189 | if (!argsaddr) |
190 | return; | |
e17a4113 UW |
191 | arg_value = read_memory_integer (argsaddr + start, |
192 | sizeof (int), byte_order); | |
8d3b0994 AC |
193 | if (!first) |
194 | fprintf_filtered (stream, ", "); | |
195 | fprintf_filtered (stream, "%ld", arg_value); | |
196 | first = 0; | |
197 | start += sizeof (int); | |
198 | } | |
199 | } | |
200 | ||
93d86cef JK |
201 | /* Print single argument of inferior function. ARG must be already |
202 | read in. | |
203 | ||
204 | Errors are printed as if they would be the parameter value. Use zeroed ARG | |
205 | iff it should not be printed accoring to user settings. */ | |
206 | ||
207 | static void | |
208 | print_frame_arg (const struct frame_arg *arg) | |
209 | { | |
210 | struct ui_out *uiout = current_uiout; | |
211 | volatile struct gdb_exception except; | |
212 | struct cleanup *old_chain; | |
213 | struct ui_stream *stb; | |
214 | ||
215 | stb = ui_out_stream_new (uiout); | |
216 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
217 | ||
218 | gdb_assert (!arg->val || !arg->error); | |
e18b2753 JK |
219 | gdb_assert (arg->entry_kind == print_entry_values_no |
220 | || arg->entry_kind == print_entry_values_only | |
221 | || (!ui_out_is_mi_like_p (uiout) | |
222 | && arg->entry_kind == print_entry_values_compact)); | |
93d86cef JK |
223 | |
224 | annotate_arg_begin (); | |
225 | ||
226 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
227 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (arg->sym), | |
228 | SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI); | |
e18b2753 JK |
229 | if (arg->entry_kind == print_entry_values_compact) |
230 | { | |
231 | /* It is OK to provide invalid MI-like stream as with | |
232 | PRINT_ENTRY_VALUE_COMPACT we never use MI. */ | |
233 | fputs_filtered ("=", stb->stream); | |
234 | ||
235 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (arg->sym), | |
236 | SYMBOL_LANGUAGE (arg->sym), | |
237 | DMGL_PARAMS | DMGL_ANSI); | |
238 | } | |
239 | if (arg->entry_kind == print_entry_values_only | |
240 | || arg->entry_kind == print_entry_values_compact) | |
241 | fputs_filtered ("@entry", stb->stream); | |
93d86cef JK |
242 | ui_out_field_stream (uiout, "name", stb); |
243 | annotate_arg_name_end (); | |
244 | ui_out_text (uiout, "="); | |
245 | ||
246 | if (!arg->val && !arg->error) | |
247 | ui_out_text (uiout, "..."); | |
248 | else | |
249 | { | |
250 | if (arg->error) | |
251 | except.message = arg->error; | |
252 | else | |
253 | { | |
254 | /* TRY_CATCH has two statements, wrap it in a block. */ | |
255 | ||
256 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
257 | { | |
258 | const struct language_defn *language; | |
259 | struct value_print_options opts; | |
260 | ||
261 | /* Avoid value_print because it will deref ref parameters. We | |
262 | just want to print their addresses. Print ??? for args whose | |
263 | address we do not know. We pass 2 as "recurse" to val_print | |
264 | because our standard indentation here is 4 spaces, and | |
265 | val_print indents 2 for each recurse. */ | |
266 | ||
267 | annotate_arg_value (value_type (arg->val)); | |
268 | ||
269 | /* Use the appropriate language to display our symbol, unless the | |
270 | user forced the language to a specific language. */ | |
271 | if (language_mode == language_mode_auto) | |
272 | language = language_def (SYMBOL_LANGUAGE (arg->sym)); | |
273 | else | |
274 | language = current_language; | |
275 | ||
276 | get_raw_print_options (&opts); | |
3343315b | 277 | opts.deref_ref = 1; |
93d86cef JK |
278 | |
279 | /* True in "summary" mode, false otherwise. */ | |
280 | opts.summary = !strcmp (print_frame_arguments, "scalars"); | |
281 | ||
282 | common_val_print (arg->val, stb->stream, 2, &opts, language); | |
283 | } | |
284 | } | |
285 | if (except.message) | |
286 | fprintf_filtered (stb->stream, _("<error reading variable: %s>"), | |
287 | except.message); | |
288 | } | |
289 | ||
290 | ui_out_field_stream (uiout, "value", stb); | |
291 | ||
292 | /* Aleo invoke ui_out_tuple_end. */ | |
293 | do_cleanups (old_chain); | |
294 | ||
295 | annotate_arg_end (); | |
296 | } | |
297 | ||
298 | /* Read in inferior function parameter SYM at FRAME into ARGP. Caller is | |
299 | responsible for xfree of ARGP->ERROR. This function never throws an | |
300 | exception. */ | |
301 | ||
302 | void | |
303 | read_frame_arg (struct symbol *sym, struct frame_info *frame, | |
e18b2753 | 304 | struct frame_arg *argp, struct frame_arg *entryargp) |
93d86cef | 305 | { |
e18b2753 JK |
306 | struct value *val = NULL, *entryval = NULL; |
307 | char *val_error = NULL, *entryval_error = NULL; | |
308 | int val_equal = 0; | |
93d86cef JK |
309 | volatile struct gdb_exception except; |
310 | ||
e18b2753 JK |
311 | if (print_entry_values != print_entry_values_only |
312 | && print_entry_values != print_entry_values_preferred) | |
313 | { | |
314 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
315 | { | |
316 | val = read_var_value (sym, frame); | |
317 | } | |
318 | if (!val) | |
319 | { | |
320 | val_error = alloca (strlen (except.message) + 1); | |
321 | strcpy (val_error, except.message); | |
322 | } | |
323 | } | |
324 | ||
325 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED | |
326 | && print_entry_values != print_entry_values_no | |
327 | && (print_entry_values != print_entry_values_if_needed | |
328 | || !val || value_optimized_out (val))) | |
329 | { | |
330 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
331 | { | |
332 | const struct symbol_computed_ops *ops; | |
333 | ||
334 | ops = SYMBOL_COMPUTED_OPS (sym); | |
335 | entryval = ops->read_variable_at_entry (sym, frame); | |
336 | } | |
337 | if (!entryval) | |
338 | { | |
339 | entryval_error = alloca (strlen (except.message) + 1); | |
340 | strcpy (entryval_error, except.message); | |
341 | } | |
342 | ||
343 | if (except.error == NO_ENTRY_VALUE_ERROR | |
344 | || (entryval && value_optimized_out (entryval))) | |
345 | { | |
346 | entryval = NULL; | |
347 | entryval_error = NULL; | |
348 | } | |
349 | ||
350 | if (print_entry_values == print_entry_values_compact | |
351 | || print_entry_values == print_entry_values_default) | |
352 | { | |
353 | /* For MI do not try to use print_entry_values_compact for ARGP. */ | |
354 | ||
355 | if (val && entryval && !ui_out_is_mi_like_p (current_uiout)) | |
356 | { | |
357 | unsigned len = TYPE_LENGTH (value_type (val)); | |
358 | ||
359 | if (!value_optimized_out (val) && value_lazy (val)) | |
360 | value_fetch_lazy (val); | |
361 | if (!value_optimized_out (val) && value_lazy (entryval)) | |
362 | value_fetch_lazy (entryval); | |
363 | if (!value_optimized_out (val) | |
364 | && value_available_contents_eq (val, 0, entryval, 0, len)) | |
365 | { | |
509f0fd9 JK |
366 | /* Initialize it just to avoid a GCC false warning. */ |
367 | struct value *val_deref = NULL, *entryval_deref; | |
a471c594 JK |
368 | |
369 | /* DW_AT_GNU_call_site_value does match with the current | |
370 | value. If it is a reference still try to verify if | |
371 | dereferenced DW_AT_GNU_call_site_data_value does not | |
372 | differ. */ | |
373 | ||
374 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
375 | { | |
376 | unsigned len_deref; | |
377 | ||
378 | val_deref = coerce_ref (val); | |
379 | if (value_lazy (val_deref)) | |
380 | value_fetch_lazy (val_deref); | |
381 | len_deref = TYPE_LENGTH (value_type (val_deref)); | |
382 | ||
383 | entryval_deref = coerce_ref (entryval); | |
384 | if (value_lazy (entryval_deref)) | |
385 | value_fetch_lazy (entryval_deref); | |
386 | ||
387 | /* If the reference addresses match but dereferenced | |
388 | content does not match print them. */ | |
389 | if (val != val_deref | |
390 | && value_available_contents_eq (val_deref, 0, | |
391 | entryval_deref, 0, | |
392 | len_deref)) | |
393 | val_equal = 1; | |
394 | } | |
395 | ||
396 | /* Value was not a reference; and its content matches. */ | |
397 | if (val == val_deref) | |
398 | val_equal = 1; | |
399 | /* If the dereferenced content could not be fetched do not | |
400 | display anything. */ | |
401 | else if (except.error == NO_ENTRY_VALUE_ERROR) | |
402 | val_equal = 1; | |
403 | else if (except.message) | |
404 | { | |
405 | entryval_error = alloca (strlen (except.message) + 1); | |
406 | strcpy (entryval_error, except.message); | |
407 | } | |
408 | ||
409 | if (val_equal) | |
410 | entryval = NULL; | |
e18b2753 JK |
411 | } |
412 | } | |
413 | ||
414 | /* Try to remove possibly duplicate error message for ENTRYARGP even | |
415 | in MI mode. */ | |
416 | ||
417 | if (val_error && entryval_error | |
418 | && strcmp (val_error, entryval_error) == 0) | |
419 | { | |
420 | entryval_error = NULL; | |
421 | ||
422 | /* Do not se VAL_EQUAL as the same error message may be shown for | |
423 | the entry value even if no entry values are present in the | |
424 | inferior. */ | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | if (entryval == NULL) | |
93d86cef | 430 | { |
e18b2753 JK |
431 | if (print_entry_values == print_entry_values_preferred) |
432 | { | |
433 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
434 | { | |
435 | val = read_var_value (sym, frame); | |
436 | } | |
437 | if (!val) | |
438 | { | |
439 | val_error = alloca (strlen (except.message) + 1); | |
440 | strcpy (val_error, except.message); | |
441 | } | |
442 | } | |
443 | if (print_entry_values == print_entry_values_only | |
444 | || print_entry_values == print_entry_values_both | |
445 | || (print_entry_values == print_entry_values_preferred | |
446 | && (!val || value_optimized_out (val)))) | |
447 | entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym)); | |
93d86cef | 448 | } |
e18b2753 JK |
449 | if ((print_entry_values == print_entry_values_compact |
450 | || print_entry_values == print_entry_values_if_needed | |
451 | || print_entry_values == print_entry_values_preferred) | |
452 | && (!val || value_optimized_out (val)) && entryval != NULL) | |
93d86cef | 453 | { |
e18b2753 JK |
454 | val = NULL; |
455 | val_error = NULL; | |
93d86cef JK |
456 | } |
457 | ||
458 | argp->sym = sym; | |
459 | argp->val = val; | |
460 | argp->error = val_error ? xstrdup (val_error) : NULL; | |
e18b2753 JK |
461 | if (!val && !val_error) |
462 | argp->entry_kind = print_entry_values_only; | |
463 | else if ((print_entry_values == print_entry_values_compact | |
464 | || print_entry_values == print_entry_values_default) && val_equal) | |
465 | { | |
466 | argp->entry_kind = print_entry_values_compact; | |
467 | gdb_assert (!ui_out_is_mi_like_p (current_uiout)); | |
468 | } | |
469 | else | |
470 | argp->entry_kind = print_entry_values_no; | |
471 | ||
472 | entryargp->sym = sym; | |
473 | entryargp->val = entryval; | |
474 | entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL; | |
475 | if (!entryval && !entryval_error) | |
476 | entryargp->entry_kind = print_entry_values_no; | |
477 | else | |
478 | entryargp->entry_kind = print_entry_values_only; | |
93d86cef JK |
479 | } |
480 | ||
033a42c2 MK |
481 | /* Print the arguments of frame FRAME on STREAM, given the function |
482 | FUNC running in that frame (as a symbol), where NUM is the number | |
483 | of arguments according to the stack frame (or -1 if the number of | |
484 | arguments is unknown). */ | |
8d3b0994 | 485 | |
e3168615 | 486 | /* Note that currently the "number of arguments according to the |
033a42c2 | 487 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 488 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
489 | |
490 | static void | |
033a42c2 MK |
491 | print_frame_args (struct symbol *func, struct frame_info *frame, |
492 | int num, struct ui_file *stream) | |
8d3b0994 | 493 | { |
79a45e25 | 494 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 495 | int first = 1; |
8d3b0994 | 496 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
497 | at the highest offset, or -1 if we haven't come to a stack |
498 | argument yet. */ | |
8d3b0994 | 499 | long highest_offset = -1; |
8d3b0994 AC |
500 | /* Number of ints of arguments that we have printed so far. */ |
501 | int args_printed = 0; | |
502 | struct cleanup *old_chain, *list_chain; | |
503 | struct ui_stream *stb; | |
a6bac58e TT |
504 | /* True if we should print arguments, false otherwise. */ |
505 | int print_args = strcmp (print_frame_arguments, "none"); | |
506 | /* True in "summary" mode, false otherwise. */ | |
507 | int summary = !strcmp (print_frame_arguments, "scalars"); | |
8d3b0994 AC |
508 | |
509 | stb = ui_out_stream_new (uiout); | |
510 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
511 | ||
512 | if (func) | |
513 | { | |
033a42c2 MK |
514 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
515 | struct dict_iterator iter; | |
516 | struct symbol *sym; | |
8d3b0994 | 517 | |
de4f826b | 518 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 | 519 | { |
e18b2753 | 520 | struct frame_arg arg, entryarg; |
93d86cef | 521 | |
8d3b0994 AC |
522 | QUIT; |
523 | ||
524 | /* Keep track of the highest stack argument offset seen, and | |
525 | skip over any kinds of symbols we don't care about. */ | |
526 | ||
2a2d4dc3 AS |
527 | if (!SYMBOL_IS_ARGUMENT (sym)) |
528 | continue; | |
529 | ||
8d3b0994 AC |
530 | switch (SYMBOL_CLASS (sym)) |
531 | { | |
532 | case LOC_ARG: | |
533 | case LOC_REF_ARG: | |
534 | { | |
535 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 536 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
537 | |
538 | /* Compute address of next argument by adding the size of | |
539 | this argument and rounding to an int boundary. */ | |
540 | current_offset = | |
541 | ((current_offset + arg_size + sizeof (int) - 1) | |
542 | & ~(sizeof (int) - 1)); | |
543 | ||
033a42c2 MK |
544 | /* If this is the highest offset seen yet, set |
545 | highest_offset. */ | |
8d3b0994 AC |
546 | if (highest_offset == -1 |
547 | || (current_offset > highest_offset)) | |
548 | highest_offset = current_offset; | |
549 | ||
033a42c2 MK |
550 | /* Add the number of ints we're about to print to |
551 | args_printed. */ | |
8d3b0994 AC |
552 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
553 | } | |
554 | ||
033a42c2 MK |
555 | /* We care about types of symbols, but don't need to |
556 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 557 | case LOC_REGISTER: |
8d3b0994 | 558 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
559 | case LOC_COMPUTED: |
560 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 561 | default: |
2a2d4dc3 | 562 | break; |
8d3b0994 AC |
563 | } |
564 | ||
565 | /* We have to look up the symbol because arguments can have | |
566 | two entries (one a parameter, one a local) and the one we | |
567 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 568 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
569 | small structure and gcc2 when the argument type is float |
570 | and it is passed as a double and converted to float by | |
571 | the prologue (in the latter case the type of the LOC_ARG | |
572 | symbol is double and the type of the LOC_LOCAL symbol is | |
573 | float). */ | |
033a42c2 MK |
574 | /* But if the parameter name is null, don't try it. Null |
575 | parameter names occur on the RS/6000, for traceback | |
576 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 577 | |
3567439c | 578 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
579 | { |
580 | struct symbol *nsym; | |
433759f7 | 581 | |
3567439c | 582 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 583 | b, VAR_DOMAIN, NULL); |
55765a25 | 584 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
585 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
586 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 587 | { |
033a42c2 MK |
588 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
589 | that it was passed on the stack and loaded into a | |
590 | register, or passed in a register and stored in a | |
591 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
592 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
593 | |
594 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
595 | |
596 | (1) Because find_saved_registers may be slow for | |
597 | remote debugging. | |
598 | ||
599 | (2) Because registers are often re-used and stack | |
600 | slots rarely (never?) are. Therefore using | |
601 | the stack slot is much less likely to print | |
602 | garbage. | |
8d3b0994 AC |
603 | |
604 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
605 | |
606 | (1) So that the backtrace prints the same value | |
607 | as "print foo". I see no compelling reason | |
608 | why this needs to be the case; having the | |
609 | backtrace print the value which was passed | |
610 | in, and "print foo" print the value as | |
611 | modified within the called function, makes | |
612 | perfect sense to me. | |
613 | ||
614 | Additional note: It might be nice if "info args" | |
615 | displayed both values. | |
616 | ||
617 | One more note: There is a case with SPARC | |
618 | structure passing where we need to use the | |
619 | LOC_REGISTER, but this is dealt with by creating | |
620 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
621 | |
622 | /* Leave sym (the LOC_ARG) alone. */ | |
623 | ; | |
624 | } | |
625 | else | |
626 | sym = nsym; | |
627 | } | |
628 | ||
629 | /* Print the current arg. */ | |
630 | if (!first) | |
631 | ui_out_text (uiout, ", "); | |
632 | ui_out_wrap_hint (uiout, " "); | |
633 | ||
93d86cef JK |
634 | if (!print_args) |
635 | { | |
636 | memset (&arg, 0, sizeof (arg)); | |
637 | arg.sym = sym; | |
e18b2753 JK |
638 | arg.entry_kind = print_entry_values_no; |
639 | memset (&entryarg, 0, sizeof (entryarg)); | |
640 | entryarg.sym = sym; | |
641 | entryarg.entry_kind = print_entry_values_no; | |
93d86cef JK |
642 | } |
643 | else | |
e18b2753 | 644 | read_frame_arg (sym, frame, &arg, &entryarg); |
8d3b0994 | 645 | |
e18b2753 JK |
646 | if (arg.entry_kind != print_entry_values_only) |
647 | print_frame_arg (&arg); | |
648 | ||
649 | if (entryarg.entry_kind != print_entry_values_no) | |
650 | { | |
651 | if (arg.entry_kind != print_entry_values_only) | |
652 | { | |
653 | ui_out_text (uiout, ", "); | |
654 | ui_out_wrap_hint (uiout, " "); | |
655 | } | |
656 | ||
657 | print_frame_arg (&entryarg); | |
658 | } | |
8d3b0994 | 659 | |
93d86cef | 660 | xfree (arg.error); |
e18b2753 | 661 | xfree (entryarg.error); |
8d3b0994 AC |
662 | |
663 | first = 0; | |
664 | } | |
665 | } | |
666 | ||
667 | /* Don't print nameless args in situations where we don't know | |
668 | enough about the stack to find them. */ | |
669 | if (num != -1) | |
670 | { | |
671 | long start; | |
672 | ||
673 | if (highest_offset == -1) | |
7500260a | 674 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
675 | else |
676 | start = highest_offset; | |
677 | ||
033a42c2 | 678 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
679 | first, stream); |
680 | } | |
033a42c2 | 681 | |
8d3b0994 AC |
682 | do_cleanups (old_chain); |
683 | } | |
684 | ||
033a42c2 MK |
685 | /* Set the current source and line to the location given by frame |
686 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
687 | line is in the center of the next 'list'. */ | |
c789492a | 688 | |
7abfe014 | 689 | void |
033a42c2 | 690 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
691 | { |
692 | struct symtab_and_line sal; | |
693 | ||
033a42c2 | 694 | find_frame_sal (frame, &sal); |
c789492a FL |
695 | if (sal.symtab) |
696 | { | |
697 | if (center) | |
698 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
699 | set_current_source_symtab_and_line (&sal); | |
700 | } | |
701 | } | |
702 | ||
30c33a9f HZ |
703 | /* If ON, GDB will display disassembly of the next source line when |
704 | execution of the program being debugged stops. | |
481df73e HZ |
705 | If AUTO (which is the default), or there's no line info to determine |
706 | the source line of the next instruction, display disassembly of next | |
707 | instruction instead. */ | |
30c33a9f HZ |
708 | |
709 | static enum auto_boolean disassemble_next_line; | |
710 | ||
711 | static void | |
712 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
713 | struct cmd_list_element *c, | |
714 | const char *value) | |
715 | { | |
3e43a32a MS |
716 | fprintf_filtered (file, |
717 | _("Debugger's willingness to use " | |
718 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
719 | value); |
720 | } | |
721 | ||
30c33a9f HZ |
722 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
723 | because it will be broken by filter sometime. */ | |
724 | ||
725 | static void | |
13274fc3 UW |
726 | do_gdb_disassembly (struct gdbarch *gdbarch, |
727 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
728 | { |
729 | volatile struct gdb_exception exception; | |
30c33a9f | 730 | |
b1d288d3 | 731 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 732 | { |
79a45e25 PA |
733 | gdb_disassembly (gdbarch, current_uiout, 0, |
734 | DISASSEMBLY_RAW_INSN, how_many, | |
735 | low, high); | |
30c33a9f | 736 | } |
b1d288d3 JK |
737 | if (exception.reason < 0) |
738 | { | |
739 | /* If an exception was thrown while doing the disassembly, print | |
740 | the error message, to give the user a clue of what happened. */ | |
741 | exception_print (gdb_stderr, exception); | |
742 | } | |
30c33a9f HZ |
743 | } |
744 | ||
033a42c2 | 745 | /* Print information about frame FRAME. The output is format according |
65aa373f | 746 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
747 | PRINT_WHAT is: |
748 | ||
749 | SRC_LINE: Print only source line. | |
750 | LOCATION: Print only location. | |
751 | LOC_AND_SRC: Print location and source line. | |
752 | ||
753 | Used in "where" output, and to emit breakpoint or step | |
754 | messages. */ | |
c906108c | 755 | |
7789c6f5 | 756 | void |
033a42c2 | 757 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 758 | enum print_what print_what, int print_args) |
c906108c | 759 | { |
5af949e3 | 760 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 761 | struct symtab_and_line sal; |
c5394b80 JM |
762 | int source_print; |
763 | int location_print; | |
79a45e25 | 764 | struct ui_out *uiout = current_uiout; |
c906108c | 765 | |
033a42c2 | 766 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
767 | || get_frame_type (frame) == SIGTRAMP_FRAME |
768 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 769 | { |
075559bc AC |
770 | struct cleanup *uiout_cleanup |
771 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 772 | |
033a42c2 | 773 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 774 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 775 | |
c906108c | 776 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 777 | to list for this frame. */ |
0faf0076 | 778 | if (print_level) |
52c6a6ac JJ |
779 | { |
780 | ui_out_text (uiout, "#"); | |
0faf0076 | 781 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 782 | frame_relative_level (frame)); |
52c6a6ac | 783 | } |
075559bc | 784 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 785 | { |
075559bc | 786 | annotate_frame_address (); |
5af949e3 UW |
787 | ui_out_field_core_addr (uiout, "addr", |
788 | gdbarch, get_frame_pc (frame)); | |
075559bc | 789 | annotate_frame_address_end (); |
52c6a6ac | 790 | } |
6a3fe0a4 | 791 | |
033a42c2 | 792 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
793 | { |
794 | annotate_function_call (); | |
795 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
796 | } | |
033a42c2 | 797 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
798 | { |
799 | annotate_signal_handler_caller (); | |
800 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
801 | } | |
36f15f55 UW |
802 | else if (get_frame_type (frame) == ARCH_FRAME) |
803 | { | |
804 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
805 | } | |
075559bc | 806 | ui_out_text (uiout, "\n"); |
c906108c | 807 | annotate_frame_end (); |
075559bc AC |
808 | |
809 | do_cleanups (uiout_cleanup); | |
c906108c SS |
810 | return; |
811 | } | |
812 | ||
033a42c2 MK |
813 | /* If FRAME is not the innermost frame, that normally means that |
814 | FRAME->pc points to *after* the call instruction, and we want to | |
815 | get the line containing the call, never the next line. But if | |
816 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
817 | next frame was not entered as the result of a call, and we want | |
818 | to get the line containing FRAME->pc. */ | |
819 | find_frame_sal (frame, &sal); | |
c906108c | 820 | |
0faf0076 AC |
821 | location_print = (print_what == LOCATION |
822 | || print_what == LOC_AND_ADDRESS | |
823 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
824 | |
825 | if (location_print || !sal.symtab) | |
033a42c2 | 826 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 827 | |
0faf0076 | 828 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 829 | |
30c33a9f HZ |
830 | /* If disassemble-next-line is set to auto or on and doesn't have |
831 | the line debug messages for $pc, output the next instruction. */ | |
832 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
833 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
834 | && source_print && !sal.symtab) | |
13274fc3 UW |
835 | do_gdb_disassembly (get_frame_arch (frame), 1, |
836 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 837 | |
c5394b80 JM |
838 | if (source_print && sal.symtab) |
839 | { | |
840 | int done = 0; | |
0faf0076 | 841 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 842 | && frame_show_address (frame, sal)); |
c5394b80 JM |
843 | |
844 | if (annotation_level) | |
845 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 846 | get_frame_pc (frame)); |
c5394b80 JM |
847 | if (!done) |
848 | { | |
9a4105ab | 849 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
850 | deprecated_print_frame_info_listing_hook (sal.symtab, |
851 | sal.line, | |
852 | sal.line + 1, 0); | |
ba4bbdcb | 853 | else |
c5394b80 | 854 | { |
79a45b7d | 855 | struct value_print_options opts; |
433759f7 | 856 | |
79a45b7d | 857 | get_user_print_options (&opts); |
ba4bbdcb | 858 | /* We used to do this earlier, but that is clearly |
c378eb4e | 859 | wrong. This function is used by many different |
ba4bbdcb KS |
860 | parts of gdb, including normal_stop in infrun.c, |
861 | which uses this to print out the current PC | |
862 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
863 | line. Only the command line really wants this |
864 | behavior. Other UIs probably would like the | |
cbd3c883 | 865 | ability to decide for themselves if it is desired. */ |
79a45b7d | 866 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 867 | { |
5af949e3 UW |
868 | ui_out_field_core_addr (uiout, "addr", |
869 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 870 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
871 | } |
872 | ||
873 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 874 | } |
c5394b80 | 875 | } |
30c33a9f HZ |
876 | |
877 | /* If disassemble-next-line is set to on and there is line debug | |
878 | messages, output assembly codes for next line. */ | |
879 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 880 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
881 | } |
882 | ||
0faf0076 | 883 | if (print_what != LOCATION) |
e3eebbd7 PA |
884 | { |
885 | CORE_ADDR pc; | |
886 | ||
887 | if (get_frame_pc_if_available (frame, &pc)) | |
1bfeeb0f | 888 | set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); |
e3eebbd7 | 889 | else |
1bfeeb0f | 890 | set_last_displayed_sal (0, 0, 0, 0, 0); |
e3eebbd7 | 891 | } |
c5394b80 JM |
892 | |
893 | annotate_frame_end (); | |
894 | ||
895 | gdb_flush (gdb_stdout); | |
896 | } | |
897 | ||
1bfeeb0f JL |
898 | /* Remember the last symtab and line we displayed, which we use e.g. |
899 | * as the place to put a breakpoint when the `break' command is | |
900 | * invoked with no arguments. */ | |
901 | ||
902 | static void | |
903 | set_last_displayed_sal (int valid, struct program_space *pspace, | |
904 | CORE_ADDR addr, struct symtab *symtab, | |
905 | int line) | |
906 | { | |
907 | last_displayed_sal_valid = valid; | |
908 | last_displayed_pspace = pspace; | |
909 | last_displayed_addr = addr; | |
910 | last_displayed_symtab = symtab; | |
911 | last_displayed_line = line; | |
912 | } | |
913 | ||
914 | /* Forget the last sal we displayed. */ | |
915 | ||
916 | void | |
917 | clear_last_displayed_sal (void) | |
918 | { | |
919 | last_displayed_sal_valid = 0; | |
920 | last_displayed_pspace = 0; | |
921 | last_displayed_addr = 0; | |
922 | last_displayed_symtab = 0; | |
923 | last_displayed_line = 0; | |
924 | } | |
925 | ||
926 | /* Is our record of the last sal we displayed valid? If not, | |
927 | * the get_last_displayed_* functions will return NULL or 0, as | |
928 | * appropriate. */ | |
929 | ||
930 | int | |
931 | last_displayed_sal_is_valid (void) | |
932 | { | |
933 | return last_displayed_sal_valid; | |
934 | } | |
935 | ||
936 | /* Get the pspace of the last sal we displayed, if it's valid. */ | |
937 | ||
938 | struct program_space * | |
939 | get_last_displayed_pspace (void) | |
940 | { | |
941 | if (last_displayed_sal_valid) | |
942 | return last_displayed_pspace; | |
943 | return 0; | |
944 | } | |
945 | ||
946 | /* Get the address of the last sal we displayed, if it's valid. */ | |
947 | ||
948 | CORE_ADDR | |
949 | get_last_displayed_addr (void) | |
950 | { | |
951 | if (last_displayed_sal_valid) | |
952 | return last_displayed_addr; | |
953 | return 0; | |
954 | } | |
955 | ||
956 | /* Get the symtab of the last sal we displayed, if it's valid. */ | |
957 | ||
958 | struct symtab* | |
959 | get_last_displayed_symtab (void) | |
960 | { | |
961 | if (last_displayed_sal_valid) | |
962 | return last_displayed_symtab; | |
963 | return 0; | |
964 | } | |
965 | ||
966 | /* Get the line of the last sal we displayed, if it's valid. */ | |
967 | ||
968 | int | |
969 | get_last_displayed_line (void) | |
970 | { | |
971 | if (last_displayed_sal_valid) | |
972 | return last_displayed_line; | |
973 | return 0; | |
974 | } | |
975 | ||
976 | /* Get the last sal we displayed, if it's valid. */ | |
977 | ||
978 | void | |
979 | get_last_displayed_sal (struct symtab_and_line *sal) | |
980 | { | |
981 | if (last_displayed_sal_valid) | |
982 | { | |
983 | sal->pspace = last_displayed_pspace; | |
984 | sal->pc = last_displayed_addr; | |
985 | sal->symtab = last_displayed_symtab; | |
986 | sal->line = last_displayed_line; | |
987 | } | |
988 | else | |
989 | { | |
990 | sal->pspace = 0; | |
991 | sal->pc = 0; | |
992 | sal->symtab = 0; | |
993 | sal->line = 0; | |
994 | } | |
995 | } | |
996 | ||
997 | ||
e9e07ba6 JK |
998 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
999 | corresponding to FRAME. */ | |
1000 | ||
f8f6f20b TJB |
1001 | void |
1002 | find_frame_funname (struct frame_info *frame, char **funname, | |
e9e07ba6 | 1003 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
1004 | { |
1005 | struct symbol *func; | |
8b93c638 | 1006 | |
f8f6f20b TJB |
1007 | *funname = NULL; |
1008 | *funlang = language_unknown; | |
e9e07ba6 JK |
1009 | if (funcp) |
1010 | *funcp = NULL; | |
c5394b80 | 1011 | |
edb3359d | 1012 | func = get_frame_function (frame); |
c906108c SS |
1013 | if (func) |
1014 | { | |
1015 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
1016 | function (when we are in the first function in a file which |
1017 | is compiled without debugging symbols, the previous function | |
1018 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
1019 | that is supposed to tell us where the file with debugging |
1020 | symbols ends has been truncated by ar because it is longer | |
1021 | than 15 characters). This also occurs if the user uses asm() | |
1022 | to create a function but not stabs for it (in a file compiled | |
1023 | with -g). | |
c5aa993b JM |
1024 | |
1025 | So look in the minimal symbol tables as well, and if it comes | |
1026 | up with a larger address for the function use that instead. | |
033a42c2 MK |
1027 | I don't think this can ever cause any problems; there |
1028 | shouldn't be any minimal symbols in the middle of a function; | |
1029 | if this is ever changed many parts of GDB will need to be | |
1030 | changed (and we'll create a find_pc_minimal_function or some | |
1031 | such). */ | |
1032 | ||
edb3359d DJ |
1033 | struct minimal_symbol *msymbol = NULL; |
1034 | ||
1035 | /* Don't attempt to do this for inlined functions, which do not | |
1036 | have a corresponding minimal symbol. */ | |
1037 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
1038 | msymbol | |
1039 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 1040 | |
c906108c | 1041 | if (msymbol != NULL |
c5aa993b | 1042 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
1043 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
1044 | { | |
c906108c SS |
1045 | /* We also don't know anything about the function besides |
1046 | its address and name. */ | |
1047 | func = 0; | |
f8f6f20b TJB |
1048 | *funname = SYMBOL_PRINT_NAME (msymbol); |
1049 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
1050 | } |
1051 | else | |
1052 | { | |
f8f6f20b TJB |
1053 | *funname = SYMBOL_PRINT_NAME (func); |
1054 | *funlang = SYMBOL_LANGUAGE (func); | |
e9e07ba6 JK |
1055 | if (funcp) |
1056 | *funcp = func; | |
f8f6f20b | 1057 | if (*funlang == language_cplus) |
c5aa993b | 1058 | { |
033a42c2 MK |
1059 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1060 | to display the demangled name that we already have | |
1061 | stored in the symbol table, but we stored a version | |
1062 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 1063 | display parameters. So remove the parameters. */ |
f8f6f20b | 1064 | char *func_only = cp_remove_params (*funname); |
433759f7 | 1065 | |
3567439c DJ |
1066 | if (func_only) |
1067 | { | |
f8f6f20b | 1068 | *funname = func_only; |
3567439c DJ |
1069 | make_cleanup (xfree, func_only); |
1070 | } | |
c5aa993b | 1071 | } |
c906108c SS |
1072 | } |
1073 | } | |
1074 | else | |
1075 | { | |
e3eebbd7 PA |
1076 | struct minimal_symbol *msymbol; |
1077 | CORE_ADDR pc; | |
033a42c2 | 1078 | |
e3eebbd7 PA |
1079 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
1080 | return; | |
1081 | ||
1082 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
c906108c SS |
1083 | if (msymbol != NULL) |
1084 | { | |
f8f6f20b TJB |
1085 | *funname = SYMBOL_PRINT_NAME (msymbol); |
1086 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
1087 | } |
1088 | } | |
f8f6f20b TJB |
1089 | } |
1090 | ||
1091 | static void | |
1092 | print_frame (struct frame_info *frame, int print_level, | |
1093 | enum print_what print_what, int print_args, | |
1094 | struct symtab_and_line sal) | |
1095 | { | |
5af949e3 | 1096 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 1097 | struct ui_out *uiout = current_uiout; |
f8f6f20b TJB |
1098 | char *funname = NULL; |
1099 | enum language funlang = language_unknown; | |
1100 | struct ui_stream *stb; | |
1101 | struct cleanup *old_chain, *list_chain; | |
1102 | struct value_print_options opts; | |
e9e07ba6 | 1103 | struct symbol *func; |
e3eebbd7 PA |
1104 | CORE_ADDR pc = 0; |
1105 | int pc_p; | |
1106 | ||
1107 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b TJB |
1108 | |
1109 | stb = ui_out_stream_new (uiout); | |
1110 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
1111 | ||
e9e07ba6 | 1112 | find_frame_funname (frame, &funname, &funlang, &func); |
c906108c | 1113 | |
033a42c2 | 1114 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 1115 | gdbarch, pc); |
c5394b80 | 1116 | |
666547aa | 1117 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 1118 | |
0faf0076 | 1119 | if (print_level) |
8b93c638 | 1120 | { |
8b93c638 | 1121 | ui_out_text (uiout, "#"); |
0faf0076 | 1122 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 1123 | frame_relative_level (frame)); |
8b93c638 | 1124 | } |
79a45b7d TT |
1125 | get_user_print_options (&opts); |
1126 | if (opts.addressprint) | |
e3eebbd7 PA |
1127 | if (!sal.symtab |
1128 | || frame_show_address (frame, sal) | |
0faf0076 | 1129 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
1130 | { |
1131 | annotate_frame_address (); | |
e3eebbd7 PA |
1132 | if (pc_p) |
1133 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
1134 | else | |
1135 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
1136 | annotate_frame_address_end (); |
1137 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
1138 | } |
1139 | annotate_frame_function_name (); | |
033a42c2 MK |
1140 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
1141 | funlang, DMGL_ANSI); | |
8b93c638 JM |
1142 | ui_out_field_stream (uiout, "func", stb); |
1143 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
1144 | annotate_frame_args (); |
1145 | ||
8b93c638 | 1146 | ui_out_text (uiout, " ("); |
0faf0076 | 1147 | if (print_args) |
c906108c | 1148 | { |
311b5970 JK |
1149 | struct gdbarch *gdbarch = get_frame_arch (frame); |
1150 | int numargs; | |
d493eb33 | 1151 | struct cleanup *args_list_chain; |
311b5970 | 1152 | volatile struct gdb_exception e; |
433759f7 | 1153 | |
311b5970 JK |
1154 | if (gdbarch_frame_num_args_p (gdbarch)) |
1155 | { | |
1156 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
1157 | gdb_assert (numargs >= 0); | |
1158 | } | |
1159 | else | |
1160 | numargs = -1; | |
1161 | ||
68c81b54 | 1162 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
1163 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1164 | { | |
1165 | print_frame_args (func, frame, numargs, gdb_stdout); | |
1166 | } | |
c378eb4e | 1167 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 1168 | will have " that will not be properly escaped. */ |
666547aa | 1169 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 1170 | do_cleanups (args_list_chain); |
c5394b80 JM |
1171 | QUIT; |
1172 | } | |
8b93c638 | 1173 | ui_out_text (uiout, ")"); |
c5394b80 JM |
1174 | if (sal.symtab && sal.symtab->filename) |
1175 | { | |
1176 | annotate_frame_source_begin (); | |
8b93c638 JM |
1177 | ui_out_wrap_hint (uiout, " "); |
1178 | ui_out_text (uiout, " at "); | |
1179 | annotate_frame_source_file (); | |
1180 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
1181 | if (ui_out_is_mi_like_p (uiout)) |
1182 | { | |
1183 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 1184 | |
76ff342d DJ |
1185 | if (fullname != NULL) |
1186 | ui_out_field_string (uiout, "fullname", fullname); | |
1187 | } | |
8b93c638 JM |
1188 | annotate_frame_source_file_end (); |
1189 | ui_out_text (uiout, ":"); | |
1190 | annotate_frame_source_line (); | |
1191 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
1192 | annotate_frame_source_end (); |
1193 | } | |
c906108c | 1194 | |
e3eebbd7 | 1195 | if (pc_p && (!funname || (!sal.symtab || !sal.symtab->filename))) |
c906108c | 1196 | { |
a77053c2 | 1197 | #ifdef PC_SOLIB |
033a42c2 | 1198 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 1199 | #else |
6c95b8df PA |
1200 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
1201 | get_frame_pc (frame)); | |
a77053c2 | 1202 | #endif |
c5394b80 | 1203 | if (lib) |
c906108c | 1204 | { |
c5394b80 | 1205 | annotate_frame_where (); |
8b93c638 JM |
1206 | ui_out_wrap_hint (uiout, " "); |
1207 | ui_out_text (uiout, " from "); | |
1208 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 1209 | } |
c906108c | 1210 | } |
e514a9d6 | 1211 | |
666547aa | 1212 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 1213 | do_cleanups (list_chain); |
8b93c638 JM |
1214 | ui_out_text (uiout, "\n"); |
1215 | do_cleanups (old_chain); | |
c906108c SS |
1216 | } |
1217 | \f | |
c5aa993b | 1218 | |
033a42c2 MK |
1219 | /* Read a frame specification in whatever the appropriate format is |
1220 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
1221 | specification is in any way invalid (so this function never returns | |
1222 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
1223 | the default selected frame was used. */ | |
c906108c | 1224 | |
1c8831c5 AC |
1225 | static struct frame_info * |
1226 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
1227 | int *selected_frame_p) | |
c906108c | 1228 | { |
1c8831c5 AC |
1229 | int numargs; |
1230 | struct value *args[4]; | |
1231 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 1232 | |
1c8831c5 AC |
1233 | if (frame_exp == NULL) |
1234 | numargs = 0; | |
1235 | else | |
c906108c | 1236 | { |
1c8831c5 AC |
1237 | numargs = 0; |
1238 | while (1) | |
c906108c | 1239 | { |
1c8831c5 AC |
1240 | char *addr_string; |
1241 | struct cleanup *cleanup; | |
1242 | const char *p; | |
1243 | ||
1244 | /* Skip leading white space, bail of EOL. */ | |
1245 | while (isspace (*frame_exp)) | |
1246 | frame_exp++; | |
1247 | if (!*frame_exp) | |
1248 | break; | |
c906108c | 1249 | |
1c8831c5 AC |
1250 | /* Parse the argument, extract it, save it. */ |
1251 | for (p = frame_exp; | |
1252 | *p && !isspace (*p); | |
1253 | p++); | |
1254 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 1255 | frame_exp = p; |
1c8831c5 AC |
1256 | cleanup = make_cleanup (xfree, addr_string); |
1257 | ||
1258 | /* NOTE: Parse and evaluate expression, but do not use | |
1259 | functions such as parse_and_eval_long or | |
1260 | parse_and_eval_address to also extract the value. | |
1261 | Instead value_as_long and value_as_address are used. | |
1262 | This avoids problems with expressions that contain | |
1263 | side-effects. */ | |
1264 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 1265 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1266 | args[numargs++] = parse_and_eval (addr_string); |
1267 | ||
1268 | do_cleanups (cleanup); | |
c906108c SS |
1269 | } |
1270 | } | |
1271 | ||
1c8831c5 AC |
1272 | /* If no args, default to the selected frame. */ |
1273 | if (numargs == 0) | |
c906108c | 1274 | { |
1c8831c5 AC |
1275 | if (selected_frame_p != NULL) |
1276 | (*selected_frame_p) = 1; | |
1277 | return get_selected_frame (message); | |
1278 | } | |
c906108c | 1279 | |
1c8831c5 AC |
1280 | /* None of the remaining use the selected frame. */ |
1281 | if (selected_frame_p != NULL) | |
98f276a0 | 1282 | (*selected_frame_p) = 0; |
c906108c | 1283 | |
1c8831c5 AC |
1284 | /* Assume the single arg[0] is an integer, and try using that to |
1285 | select a frame relative to current. */ | |
1286 | if (numargs == 1) | |
1287 | { | |
1288 | struct frame_info *fid; | |
1289 | int level = value_as_long (args[0]); | |
433759f7 | 1290 | |
1c8831c5 AC |
1291 | fid = find_relative_frame (get_current_frame (), &level); |
1292 | if (level == 0) | |
c378eb4e | 1293 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
1294 | return fid; |
1295 | } | |
c906108c | 1296 | |
1c8831c5 AC |
1297 | /* Convert each value into a corresponding address. */ |
1298 | { | |
1299 | int i; | |
433759f7 | 1300 | |
1c8831c5 | 1301 | for (i = 0; i < numargs; i++) |
1e275f79 | 1302 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 1303 | } |
c5aa993b | 1304 | |
1c8831c5 AC |
1305 | /* Assume that the single arg[0] is an address, use that to identify |
1306 | a frame with a matching ID. Should this also accept stack/pc or | |
1307 | stack/pc/special. */ | |
1308 | if (numargs == 1) | |
1309 | { | |
1310 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
1311 | struct frame_info *fid; | |
1312 | ||
1c8831c5 AC |
1313 | /* If (s)he specifies the frame with an address, he deserves |
1314 | what (s)he gets. Still, give the highest one that matches. | |
1315 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
1316 | know). */ | |
1317 | for (fid = get_current_frame (); | |
1318 | fid != NULL; | |
1319 | fid = get_prev_frame (fid)) | |
1320 | { | |
1321 | if (frame_id_eq (id, get_frame_id (fid))) | |
1322 | { | |
c7ce8faa DJ |
1323 | struct frame_info *prev_frame; |
1324 | ||
1325 | while (1) | |
1326 | { | |
1327 | prev_frame = get_prev_frame (fid); | |
1328 | if (!prev_frame | |
1329 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
1330 | break; | |
1331 | fid = prev_frame; | |
1332 | } | |
1c8831c5 AC |
1333 | return fid; |
1334 | } | |
1335 | } | |
c906108c SS |
1336 | } |
1337 | ||
1c8831c5 AC |
1338 | /* We couldn't identify the frame as an existing frame, but |
1339 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
1340 | if (numargs == 1) |
1341 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
1342 | else if (numargs == 2) |
1343 | return create_new_frame (addrs[0], addrs[1]); | |
1344 | else | |
8a3fe4f8 | 1345 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
1346 | } |
1347 | ||
9c833c82 | 1348 | static struct frame_info * |
1c8831c5 AC |
1349 | parse_frame_specification (char *frame_exp) |
1350 | { | |
1351 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
1352 | } |
1353 | ||
033a42c2 MK |
1354 | /* Print verbosely the selected frame or the frame at address |
1355 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
1356 | |
1357 | static void | |
fba45db2 | 1358 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
1359 | { |
1360 | struct frame_info *fi; | |
1361 | struct symtab_and_line sal; | |
1362 | struct symbol *func; | |
1363 | struct symtab *s; | |
1364 | struct frame_info *calling_frame_info; | |
167e4384 | 1365 | int numregs; |
c906108c SS |
1366 | char *funname = 0; |
1367 | enum language funlang = language_unknown; | |
82de1e5b | 1368 | const char *pc_regname; |
1c8831c5 | 1369 | int selected_frame_p; |
7500260a | 1370 | struct gdbarch *gdbarch; |
3567439c | 1371 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
1372 | CORE_ADDR frame_pc; |
1373 | int frame_pc_p; | |
1374 | CORE_ADDR caller_pc; | |
c906108c | 1375 | |
1c8831c5 | 1376 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 1377 | gdbarch = get_frame_arch (fi); |
c906108c | 1378 | |
82de1e5b AC |
1379 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
1380 | is not a good name. */ | |
12368003 | 1381 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1382 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
1383 | easily not match that of the internal value returned by |
1384 | get_frame_pc(). */ | |
12368003 | 1385 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1386 | else |
3e8c568d | 1387 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1388 | architectures will often have a hardware register called "pc", |
1389 | and that register's value, again, can easily not match | |
1390 | get_frame_pc(). */ | |
1391 | pc_regname = "pc"; | |
1392 | ||
008f8f2e | 1393 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1394 | find_frame_sal (fi, &sal); |
c906108c | 1395 | func = get_frame_function (fi); |
008f8f2e | 1396 | s = sal.symtab; |
c906108c SS |
1397 | if (func) |
1398 | { | |
3567439c | 1399 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1400 | funlang = SYMBOL_LANGUAGE (func); |
1401 | if (funlang == language_cplus) | |
1402 | { | |
3567439c DJ |
1403 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1404 | to display the demangled name that we already have | |
1405 | stored in the symbol table, but we stored a version | |
1406 | with DMGL_PARAMS turned on, and here we don't want to | |
1407 | display parameters. So remove the parameters. */ | |
1408 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1409 | |
3567439c DJ |
1410 | if (func_only) |
1411 | { | |
1412 | funname = func_only; | |
1413 | make_cleanup (xfree, func_only); | |
1414 | } | |
c5aa993b | 1415 | } |
c906108c | 1416 | } |
008f8f2e | 1417 | else if (frame_pc_p) |
c906108c | 1418 | { |
033a42c2 MK |
1419 | struct minimal_symbol *msymbol; |
1420 | ||
008f8f2e | 1421 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
c906108c SS |
1422 | if (msymbol != NULL) |
1423 | { | |
3567439c | 1424 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1425 | funlang = SYMBOL_LANGUAGE (msymbol); |
1426 | } | |
1427 | } | |
1428 | calling_frame_info = get_prev_frame (fi); | |
1429 | ||
1c8831c5 | 1430 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1431 | { |
a3f17187 | 1432 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1433 | frame_relative_level (fi)); |
c906108c SS |
1434 | } |
1435 | else | |
1436 | { | |
a3f17187 | 1437 | printf_filtered (_("Stack frame at ")); |
c906108c | 1438 | } |
5af949e3 | 1439 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1440 | printf_filtered (":\n"); |
82de1e5b | 1441 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1442 | if (frame_pc_p) |
1443 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1444 | else | |
1445 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1446 | |
1447 | wrap_here (" "); | |
1448 | if (funname) | |
1449 | { | |
1450 | printf_filtered (" in "); | |
1451 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1452 | DMGL_ANSI | DMGL_PARAMS); | |
1453 | } | |
1454 | wrap_here (" "); | |
1455 | if (sal.symtab) | |
1456 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1457 | puts_filtered ("; "); | |
1458 | wrap_here (" "); | |
82de1e5b | 1459 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1460 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1461 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1462 | else | |
1463 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1464 | printf_filtered ("\n"); |
1465 | ||
55feb689 DJ |
1466 | if (calling_frame_info == NULL) |
1467 | { | |
1468 | enum unwind_stop_reason reason; | |
1469 | ||
1470 | reason = get_frame_unwind_stop_reason (fi); | |
1471 | if (reason != UNWIND_NO_REASON) | |
1472 | printf_filtered (_(" Outermost frame: %s\n"), | |
1473 | frame_stop_reason_string (reason)); | |
1474 | } | |
111c6489 JK |
1475 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1476 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1477 | else if (get_frame_type (fi) == INLINE_FRAME) |
1478 | printf_filtered (" inlined into frame %d", | |
1479 | frame_relative_level (get_prev_frame (fi))); | |
1480 | else | |
c906108c SS |
1481 | { |
1482 | printf_filtered (" called by frame at "); | |
5af949e3 | 1483 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1484 | gdb_stdout); |
c906108c | 1485 | } |
75e3c1f9 | 1486 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1487 | puts_filtered (","); |
1488 | wrap_here (" "); | |
75e3c1f9 | 1489 | if (get_next_frame (fi)) |
c906108c SS |
1490 | { |
1491 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1492 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1493 | gdb_stdout); |
c906108c | 1494 | } |
75e3c1f9 | 1495 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1496 | puts_filtered ("\n"); |
55feb689 | 1497 | |
c906108c | 1498 | if (s) |
1058bca7 AC |
1499 | printf_filtered (" source language %s.\n", |
1500 | language_str (s->language)); | |
c906108c | 1501 | |
c906108c SS |
1502 | { |
1503 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1504 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1505 | /* Number of args for this frame, or -1 if unknown. */ |
1506 | int numargs; | |
1507 | ||
1508 | if (arg_list == 0) | |
1509 | printf_filtered (" Arglist at unknown address.\n"); | |
1510 | else | |
1511 | { | |
1512 | printf_filtered (" Arglist at "); | |
5af949e3 | 1513 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1514 | printf_filtered (","); |
1515 | ||
7500260a | 1516 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1517 | { |
1518 | numargs = -1; | |
1519 | puts_filtered (" args: "); | |
1520 | } | |
c906108c | 1521 | else |
983a287a | 1522 | { |
7500260a | 1523 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1524 | gdb_assert (numargs >= 0); |
1525 | if (numargs == 0) | |
1526 | puts_filtered (" no args."); | |
1527 | else if (numargs == 1) | |
1528 | puts_filtered (" 1 arg: "); | |
1529 | else | |
1530 | printf_filtered (" %d args: ", numargs); | |
1531 | } | |
c906108c SS |
1532 | print_frame_args (func, fi, numargs, gdb_stdout); |
1533 | puts_filtered ("\n"); | |
1534 | } | |
1535 | } | |
1536 | { | |
1537 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1538 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1539 | |
1540 | if (arg_list == 0) | |
1541 | printf_filtered (" Locals at unknown address,"); | |
1542 | else | |
1543 | { | |
1544 | printf_filtered (" Locals at "); | |
5af949e3 | 1545 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1546 | printf_filtered (","); |
1547 | } | |
1548 | } | |
1549 | ||
4f460812 AC |
1550 | /* Print as much information as possible on the location of all the |
1551 | registers. */ | |
1552 | { | |
1553 | enum lval_type lval; | |
1554 | int optimized; | |
0fdb4f18 | 1555 | int unavailable; |
4f460812 AC |
1556 | CORE_ADDR addr; |
1557 | int realnum; | |
1558 | int count; | |
1559 | int i; | |
1560 | int need_nl = 1; | |
1561 | ||
1562 | /* The sp is special; what's displayed isn't the save address, but | |
1563 | the value of the previous frame's sp. This is a legacy thing, | |
1564 | at one stage the frame cached the previous frame's SP instead | |
1565 | of its address, hence it was easiest to just display the cached | |
1566 | value. */ | |
7500260a | 1567 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1568 | { |
1569 | /* Find out the location of the saved stack pointer with out | |
1570 | actually evaluating it. */ | |
7500260a | 1571 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1572 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1573 | &realnum, NULL); |
0fdb4f18 | 1574 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1575 | { |
e17a4113 UW |
1576 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1577 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1578 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1579 | CORE_ADDR sp; |
433759f7 | 1580 | |
7500260a | 1581 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1582 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1583 | &realnum, value); |
af1342ab AC |
1584 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1585 | stack pointer was packed as an unsigned integer. That | |
1586 | may or may not be valid. */ | |
e17a4113 | 1587 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1588 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1589 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1590 | printf_filtered ("\n"); |
1591 | need_nl = 0; | |
c906108c | 1592 | } |
0fdb4f18 | 1593 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1594 | { |
1595 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1596 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1597 | printf_filtered ("\n"); |
1598 | need_nl = 0; | |
1599 | } | |
0fdb4f18 | 1600 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1601 | { |
1602 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1603 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1604 | need_nl = 0; |
1605 | } | |
1606 | /* else keep quiet. */ | |
1607 | } | |
1608 | ||
1609 | count = 0; | |
7500260a UW |
1610 | numregs = gdbarch_num_regs (gdbarch) |
1611 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1612 | for (i = 0; i < numregs; i++) |
7500260a UW |
1613 | if (i != gdbarch_sp_regnum (gdbarch) |
1614 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1615 | { |
1616 | /* Find out the location of the saved register without | |
1617 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1618 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1619 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1620 | /* For moment, only display registers that were saved on the |
1621 | stack. */ | |
0fdb4f18 | 1622 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1623 | { |
1624 | if (count == 0) | |
1625 | puts_filtered (" Saved registers:\n "); | |
1626 | else | |
1627 | puts_filtered (","); | |
1628 | wrap_here (" "); | |
c9f4d572 | 1629 | printf_filtered (" %s at ", |
7500260a | 1630 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1631 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1632 | count++; |
1633 | } | |
1634 | } | |
1635 | if (count || need_nl) | |
c906108c | 1636 | puts_filtered ("\n"); |
4f460812 | 1637 | } |
3567439c DJ |
1638 | |
1639 | do_cleanups (back_to); | |
c906108c SS |
1640 | } |
1641 | ||
033a42c2 MK |
1642 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1643 | frames. */ | |
c906108c SS |
1644 | |
1645 | static void | |
fba45db2 | 1646 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1647 | { |
1648 | struct frame_info *fi; | |
52f0bd74 AC |
1649 | int count; |
1650 | int i; | |
1651 | struct frame_info *trailing; | |
1652 | int trailing_level; | |
c906108c SS |
1653 | |
1654 | if (!target_has_stack) | |
8a3fe4f8 | 1655 | error (_("No stack.")); |
c906108c | 1656 | |
033a42c2 MK |
1657 | /* The following code must do two things. First, it must set the |
1658 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1659 | printing. Second, it must set the variable count to the number |
1660 | of frames which we should print, or -1 if all of them. */ | |
1661 | trailing = get_current_frame (); | |
d082b2bb | 1662 | |
c906108c SS |
1663 | trailing_level = 0; |
1664 | if (count_exp) | |
1665 | { | |
bb518678 | 1666 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1667 | if (count < 0) |
1668 | { | |
1669 | struct frame_info *current; | |
1670 | ||
1671 | count = -count; | |
1672 | ||
1673 | current = trailing; | |
1674 | while (current && count--) | |
1675 | { | |
1676 | QUIT; | |
1677 | current = get_prev_frame (current); | |
1678 | } | |
c5aa993b | 1679 | |
033a42c2 MK |
1680 | /* Will stop when CURRENT reaches the top of the stack. |
1681 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1682 | while (current) |
1683 | { | |
1684 | QUIT; | |
1685 | trailing = get_prev_frame (trailing); | |
1686 | current = get_prev_frame (current); | |
1687 | trailing_level++; | |
1688 | } | |
c5aa993b | 1689 | |
c906108c SS |
1690 | count = -1; |
1691 | } | |
1692 | } | |
1693 | else | |
1694 | count = -1; | |
1695 | ||
1696 | if (info_verbose) | |
1697 | { | |
033a42c2 MK |
1698 | /* Read in symbols for all of the frames. Need to do this in a |
1699 | separate pass so that "Reading in symbols for xxx" messages | |
1700 | don't screw up the appearance of the backtrace. Also if | |
1701 | people have strong opinions against reading symbols for | |
c5aa993b | 1702 | backtrace this may have to be an option. */ |
c906108c | 1703 | i = count; |
033a42c2 | 1704 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1705 | { |
ccefe4c4 | 1706 | CORE_ADDR pc; |
433759f7 | 1707 | |
c906108c | 1708 | QUIT; |
ccefe4c4 TT |
1709 | pc = get_frame_address_in_block (fi); |
1710 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1711 | } |
1712 | } | |
1713 | ||
033a42c2 | 1714 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1715 | { |
1716 | QUIT; | |
1717 | ||
1718 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1719 | means further attempts to backtrace would fail (on the other |
1720 | hand, perhaps the code does or could be fixed to make sure | |
1721 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1722 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1723 | if (show_locals) |
c5aa993b | 1724 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1725 | |
1726 | /* Save the last frame to check for error conditions. */ | |
1727 | trailing = fi; | |
c906108c SS |
1728 | } |
1729 | ||
1730 | /* If we've stopped before the end, mention that. */ | |
1731 | if (fi && from_tty) | |
a3f17187 | 1732 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1733 | |
1734 | /* If we've run out of frames, and the reason appears to be an error | |
1735 | condition, print it. */ | |
1736 | if (fi == NULL && trailing != NULL) | |
1737 | { | |
1738 | enum unwind_stop_reason reason; | |
1739 | ||
1740 | reason = get_frame_unwind_stop_reason (trailing); | |
2231f1fb | 1741 | if (reason >= UNWIND_FIRST_ERROR) |
55feb689 DJ |
1742 | printf_filtered (_("Backtrace stopped: %s\n"), |
1743 | frame_stop_reason_string (reason)); | |
1744 | } | |
c906108c SS |
1745 | } |
1746 | ||
1747 | static void | |
fba45db2 | 1748 | backtrace_command (char *arg, int from_tty) |
c906108c | 1749 | { |
5fe41fbf | 1750 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
033a42c2 | 1751 | int fulltrace_arg = -1, arglen = 0, argc = 0; |
c906108c | 1752 | |
033a42c2 | 1753 | if (arg) |
c906108c | 1754 | { |
033a42c2 | 1755 | char **argv; |
c906108c SS |
1756 | int i; |
1757 | ||
d1a41061 | 1758 | argv = gdb_buildargv (arg); |
5fe41fbf | 1759 | make_cleanup_freeargv (argv); |
c906108c | 1760 | argc = 0; |
033a42c2 | 1761 | for (i = 0; argv[i]; i++) |
c5aa993b | 1762 | { |
745b8ca0 | 1763 | unsigned int j; |
c5aa993b | 1764 | |
033a42c2 | 1765 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1766 | argv[i][j] = tolower (argv[i][j]); |
1767 | ||
033a42c2 MK |
1768 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1769 | fulltrace_arg = argc; | |
c5aa993b JM |
1770 | else |
1771 | { | |
033a42c2 | 1772 | arglen += strlen (argv[i]); |
c5aa993b | 1773 | argc++; |
c5aa993b JM |
1774 | } |
1775 | } | |
033a42c2 MK |
1776 | arglen += argc; |
1777 | if (fulltrace_arg >= 0) | |
c5aa993b | 1778 | { |
033a42c2 | 1779 | if (arglen > 0) |
c5aa993b | 1780 | { |
033a42c2 | 1781 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1782 | make_cleanup (xfree, arg); |
1783 | arg[0] = 0; | |
033a42c2 | 1784 | for (i = 0; i < (argc + 1); i++) |
c5aa993b | 1785 | { |
033a42c2 | 1786 | if (i != fulltrace_arg) |
c5aa993b | 1787 | { |
033a42c2 MK |
1788 | strcat (arg, argv[i]); |
1789 | strcat (arg, " "); | |
c5aa993b JM |
1790 | } |
1791 | } | |
1792 | } | |
1793 | else | |
033a42c2 | 1794 | arg = NULL; |
c5aa993b | 1795 | } |
c906108c SS |
1796 | } |
1797 | ||
b1d288d3 | 1798 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty); |
c906108c | 1799 | |
5fe41fbf | 1800 | do_cleanups (old_chain); |
c906108c SS |
1801 | } |
1802 | ||
1803 | static void | |
fba45db2 | 1804 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1805 | { |
b1d288d3 | 1806 | backtrace_command_1 (arg, 1 /* show_locals */, from_tty); |
c906108c | 1807 | } |
c906108c | 1808 | \f |
c5aa993b | 1809 | |
2c58c0a9 PA |
1810 | /* Iterate over the local variables of a block B, calling CB with |
1811 | CB_DATA. */ | |
c906108c | 1812 | |
2c58c0a9 PA |
1813 | static void |
1814 | iterate_over_block_locals (struct block *b, | |
1815 | iterate_over_block_arg_local_vars_cb cb, | |
1816 | void *cb_data) | |
c906108c | 1817 | { |
de4f826b | 1818 | struct dict_iterator iter; |
de4f826b | 1819 | struct symbol *sym; |
c906108c | 1820 | |
de4f826b | 1821 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1822 | { |
c906108c SS |
1823 | switch (SYMBOL_CLASS (sym)) |
1824 | { | |
1825 | case LOC_LOCAL: | |
1826 | case LOC_REGISTER: | |
1827 | case LOC_STATIC: | |
4c2df51b | 1828 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1829 | if (SYMBOL_IS_ARGUMENT (sym)) |
1830 | break; | |
2c58c0a9 | 1831 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1832 | break; |
1833 | ||
1834 | default: | |
1835 | /* Ignore symbols which are not locals. */ | |
1836 | break; | |
1837 | } | |
1838 | } | |
c906108c SS |
1839 | } |
1840 | ||
65c06092 | 1841 | |
c906108c SS |
1842 | /* Same, but print labels. */ |
1843 | ||
65c06092 JB |
1844 | #if 0 |
1845 | /* Commented out, as the code using this function has also been | |
1846 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1847 | was commented out in the first place. The discussion introducing | |
1848 | this change (2007-12-04: Support lexical blocks and function bodies | |
1849 | that occupy non-contiguous address ranges) did not explain why | |
1850 | this change was made. */ | |
c906108c | 1851 | static int |
5af949e3 UW |
1852 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1853 | int *have_default, struct ui_file *stream) | |
c906108c | 1854 | { |
de4f826b | 1855 | struct dict_iterator iter; |
52f0bd74 AC |
1856 | struct symbol *sym; |
1857 | int values_printed = 0; | |
c906108c | 1858 | |
de4f826b | 1859 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1860 | { |
3567439c | 1861 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1862 | { |
1863 | if (*have_default) | |
1864 | continue; | |
1865 | *have_default = 1; | |
1866 | } | |
1867 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1868 | { | |
1869 | struct symtab_and_line sal; | |
79a45b7d | 1870 | struct value_print_options opts; |
433759f7 | 1871 | |
c906108c SS |
1872 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1873 | values_printed = 1; | |
de5ad195 | 1874 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1875 | get_user_print_options (&opts); |
1876 | if (opts.addressprint) | |
c906108c SS |
1877 | { |
1878 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1879 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1880 | stream); | |
c906108c SS |
1881 | } |
1882 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1883 | sal.symtab->filename, sal.line); | |
1884 | } | |
1885 | } | |
033a42c2 | 1886 | |
c906108c SS |
1887 | return values_printed; |
1888 | } | |
65c06092 | 1889 | #endif |
c906108c | 1890 | |
2c58c0a9 PA |
1891 | /* Iterate over all the local variables in block B, including all its |
1892 | superblocks, stopping when the top-level block is reached. */ | |
1893 | ||
1894 | void | |
1895 | iterate_over_block_local_vars (struct block *block, | |
1896 | iterate_over_block_arg_local_vars_cb cb, | |
1897 | void *cb_data) | |
1898 | { | |
1899 | while (block) | |
1900 | { | |
1901 | iterate_over_block_locals (block, cb, cb_data); | |
1902 | /* After handling the function's top-level block, stop. Don't | |
1903 | continue to its superblock, the block of per-file | |
1904 | symbols. */ | |
1905 | if (BLOCK_FUNCTION (block)) | |
1906 | break; | |
1907 | block = BLOCK_SUPERBLOCK (block); | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | /* Data to be passed around in the calls to the locals and args | |
1912 | iterators. */ | |
c906108c | 1913 | |
2c58c0a9 PA |
1914 | struct print_variable_and_value_data |
1915 | { | |
1916 | struct frame_info *frame; | |
1917 | int num_tabs; | |
1918 | struct ui_file *stream; | |
1919 | int values_printed; | |
1920 | }; | |
1921 | ||
c378eb4e | 1922 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
1923 | |
1924 | static void | |
1925 | do_print_variable_and_value (const char *print_name, | |
1926 | struct symbol *sym, | |
1927 | void *cb_data) | |
1928 | { | |
1929 | struct print_variable_and_value_data *p = cb_data; | |
1930 | ||
1931 | print_variable_and_value (print_name, sym, | |
1932 | p->frame, p->stream, p->num_tabs); | |
1933 | p->values_printed = 1; | |
1934 | } | |
c906108c SS |
1935 | |
1936 | static void | |
033a42c2 | 1937 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1938 | struct ui_file *stream) |
c906108c | 1939 | { |
2c58c0a9 PA |
1940 | struct print_variable_and_value_data cb_data; |
1941 | struct block *block; | |
1d4f5741 PA |
1942 | CORE_ADDR pc; |
1943 | ||
1944 | if (!get_frame_pc_if_available (frame, &pc)) | |
1945 | { | |
1946 | fprintf_filtered (stream, | |
1947 | _("PC unavailable, cannot determine locals.\n")); | |
1948 | return; | |
1949 | } | |
c906108c | 1950 | |
2c58c0a9 | 1951 | block = get_frame_block (frame, 0); |
c906108c SS |
1952 | if (block == 0) |
1953 | { | |
1954 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1955 | return; | |
1956 | } | |
c5aa993b | 1957 | |
2c58c0a9 PA |
1958 | cb_data.frame = frame; |
1959 | cb_data.num_tabs = 4 * num_tabs; | |
1960 | cb_data.stream = stream; | |
1961 | cb_data.values_printed = 0; | |
1962 | ||
1963 | iterate_over_block_local_vars (block, | |
1964 | do_print_variable_and_value, | |
1965 | &cb_data); | |
c906108c | 1966 | |
2c58c0a9 | 1967 | if (!cb_data.values_printed) |
033a42c2 | 1968 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1969 | } |
1970 | ||
1971 | /* Same, but print labels. */ | |
1972 | ||
1973 | static void | |
033a42c2 | 1974 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1975 | struct ui_file *stream) |
c906108c | 1976 | { |
801e3a5b JB |
1977 | #if 1 |
1978 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1979 | #else | |
52f0bd74 | 1980 | struct blockvector *bl; |
033a42c2 | 1981 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1982 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1983 | int values_printed = 0; |
c906108c SS |
1984 | int index, have_default = 0; |
1985 | char *blocks_printed; | |
033a42c2 | 1986 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1987 | |
1988 | if (block == 0) | |
1989 | { | |
1990 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1991 | return; | |
1992 | } | |
1993 | ||
1994 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1995 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1996 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1997 | ||
1998 | while (block != 0) | |
1999 | { | |
2000 | CORE_ADDR end = BLOCK_END (block) - 4; | |
2001 | int last_index; | |
2002 | ||
2003 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 2004 | error (_("blockvector blotch")); |
c906108c | 2005 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 2006 | error (_("blockvector botch")); |
c906108c SS |
2007 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
2008 | index += 1; | |
2009 | ||
2010 | /* Don't print out blocks that have gone by. */ | |
2011 | while (index < last_index | |
2012 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
2013 | index++; | |
2014 | ||
2015 | while (index < last_index | |
2016 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
2017 | { | |
2018 | if (blocks_printed[index] == 0) | |
2019 | { | |
5af949e3 UW |
2020 | if (print_block_frame_labels (gdbarch, |
2021 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 2022 | &have_default, stream)) |
c906108c SS |
2023 | values_printed = 1; |
2024 | blocks_printed[index] = 1; | |
2025 | } | |
2026 | index++; | |
2027 | } | |
2028 | if (have_default) | |
2029 | return; | |
2030 | if (values_printed && this_level_only) | |
2031 | return; | |
2032 | ||
033a42c2 | 2033 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
2034 | continue to its superblock, the block of per-file symbols. |
2035 | Also do not continue to the containing function of an inlined | |
2036 | function. */ | |
c906108c SS |
2037 | if (BLOCK_FUNCTION (block)) |
2038 | break; | |
2039 | block = BLOCK_SUPERBLOCK (block); | |
2040 | } | |
2041 | ||
2042 | if (!values_printed && !this_level_only) | |
033a42c2 | 2043 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 2044 | #endif |
c906108c SS |
2045 | } |
2046 | ||
c906108c | 2047 | void |
fba45db2 | 2048 | locals_info (char *args, int from_tty) |
c906108c | 2049 | { |
033a42c2 | 2050 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2051 | 0, gdb_stdout); |
c906108c SS |
2052 | } |
2053 | ||
2054 | static void | |
fba45db2 | 2055 | catch_info (char *ignore, int from_tty) |
c906108c | 2056 | { |
dfdfb3ca JB |
2057 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
2058 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
2059 | 0, gdb_stdout); | |
c906108c SS |
2060 | } |
2061 | ||
2c58c0a9 PA |
2062 | /* Iterate over all the argument variables in block B. |
2063 | ||
2064 | Returns 1 if any argument was walked; 0 otherwise. */ | |
2065 | ||
2066 | void | |
2067 | iterate_over_block_arg_vars (struct block *b, | |
2068 | iterate_over_block_arg_local_vars_cb cb, | |
2069 | void *cb_data) | |
c906108c | 2070 | { |
de4f826b | 2071 | struct dict_iterator iter; |
52f0bd74 | 2072 | struct symbol *sym, *sym2; |
c906108c | 2073 | |
de4f826b | 2074 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 2075 | { |
2a2d4dc3 AS |
2076 | /* Don't worry about things which aren't arguments. */ |
2077 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 2078 | { |
c906108c SS |
2079 | /* We have to look up the symbol because arguments can have |
2080 | two entries (one a parameter, one a local) and the one we | |
2081 | want is the local, which lookup_symbol will find for us. | |
2082 | This includes gcc1 (not gcc2) on the sparc when passing a | |
2083 | small structure and gcc2 when the argument type is float | |
2084 | and it is passed as a double and converted to float by | |
2085 | the prologue (in the latter case the type of the LOC_ARG | |
2086 | symbol is double and the type of the LOC_LOCAL symbol is | |
2087 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
2088 | are not combined in symbol-reading. */ | |
2089 | ||
3567439c | 2090 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 2091 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 2092 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
2093 | } |
2094 | } | |
2c58c0a9 PA |
2095 | } |
2096 | ||
2097 | static void | |
2098 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
2099 | { | |
2100 | struct print_variable_and_value_data cb_data; | |
2101 | struct symbol *func; | |
1d4f5741 PA |
2102 | CORE_ADDR pc; |
2103 | ||
2104 | if (!get_frame_pc_if_available (frame, &pc)) | |
2105 | { | |
2106 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
2107 | return; | |
2108 | } | |
2c58c0a9 PA |
2109 | |
2110 | func = get_frame_function (frame); | |
2111 | if (func == NULL) | |
2112 | { | |
2113 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
2114 | return; | |
2115 | } | |
2116 | ||
2117 | cb_data.frame = frame; | |
2118 | cb_data.num_tabs = 0; | |
2119 | cb_data.stream = gdb_stdout; | |
2120 | cb_data.values_printed = 0; | |
2121 | ||
2122 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
2123 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 2124 | |
2c58c0a9 | 2125 | if (!cb_data.values_printed) |
033a42c2 | 2126 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
2127 | } |
2128 | ||
2129 | void | |
fba45db2 | 2130 | args_info (char *ignore, int from_tty) |
c906108c | 2131 | { |
033a42c2 | 2132 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 2133 | gdb_stdout); |
c906108c SS |
2134 | } |
2135 | ||
2136 | ||
2137 | static void | |
fba45db2 | 2138 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 2139 | { |
c5aa993b JM |
2140 | args_info (ignore, from_tty); |
2141 | locals_info (ignore, from_tty); | |
c906108c | 2142 | } |
c906108c | 2143 | \f |
c5aa993b | 2144 | |
033a42c2 MK |
2145 | /* Select frame FRAME. Also print the stack frame and show the source |
2146 | if this is the tui version. */ | |
bedfa57b | 2147 | static void |
033a42c2 | 2148 | select_and_print_frame (struct frame_info *frame) |
c906108c | 2149 | { |
033a42c2 MK |
2150 | select_frame (frame); |
2151 | if (frame) | |
2152 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 2153 | } |
c906108c | 2154 | \f |
c906108c | 2155 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
2156 | Can return zero under various legitimate circumstances. |
2157 | ||
2158 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
2159 | code address within the block returned. We use this to decide | |
2160 | which macros are in scope. */ | |
c906108c SS |
2161 | |
2162 | struct block * | |
ae767bfb | 2163 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 2164 | { |
d729566a | 2165 | if (!has_stack_frames ()) |
8ea051c5 PA |
2166 | return 0; |
2167 | ||
206415a3 | 2168 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
2169 | } |
2170 | ||
2171 | /* Find a frame a certain number of levels away from FRAME. | |
2172 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
2173 | Positive means go to earlier frames (up); negative, the reverse. | |
2174 | The int that contains the number of levels is counted toward | |
2175 | zero as the frames for those levels are found. | |
2176 | If the top or bottom frame is reached, that frame is returned, | |
2177 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
2178 | how much farther the original request asked to go. */ | |
2179 | ||
2180 | struct frame_info * | |
033a42c2 | 2181 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 2182 | { |
033a42c2 MK |
2183 | /* Going up is simple: just call get_prev_frame enough times or |
2184 | until the initial frame is reached. */ | |
c906108c SS |
2185 | while (*level_offset_ptr > 0) |
2186 | { | |
033a42c2 | 2187 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 2188 | |
033a42c2 | 2189 | if (!prev) |
c906108c SS |
2190 | break; |
2191 | (*level_offset_ptr)--; | |
2192 | frame = prev; | |
2193 | } | |
033a42c2 | 2194 | |
c906108c | 2195 | /* Going down is just as simple. */ |
033a42c2 | 2196 | while (*level_offset_ptr < 0) |
c906108c | 2197 | { |
033a42c2 | 2198 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 2199 | |
033a42c2 MK |
2200 | if (!next) |
2201 | break; | |
2202 | (*level_offset_ptr)++; | |
2203 | frame = next; | |
c906108c | 2204 | } |
033a42c2 | 2205 | |
c906108c SS |
2206 | return frame; |
2207 | } | |
2208 | ||
033a42c2 MK |
2209 | /* The "select_frame" command. With no argument this is a NOP. |
2210 | Select the frame at level LEVEL_EXP if it is a valid level. | |
2211 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
2212 | ||
2213 | See parse_frame_specification for more info on proper frame | |
2214 | expressions. */ | |
c906108c | 2215 | |
8b93c638 | 2216 | void |
fba45db2 | 2217 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 2218 | { |
1c8831c5 | 2219 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
2220 | } |
2221 | ||
033a42c2 MK |
2222 | /* The "frame" command. With no argument, print the selected frame |
2223 | briefly. With an argument, behave like select_frame and then print | |
2224 | the selected frame. */ | |
c906108c | 2225 | |
033a42c2 | 2226 | static void |
fba45db2 | 2227 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
2228 | { |
2229 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 2230 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2231 | } |
2232 | ||
033a42c2 | 2233 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 2234 | |
7a292a7a | 2235 | static void |
fba45db2 | 2236 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 2237 | { |
033a42c2 | 2238 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 2239 | } |
c906108c | 2240 | |
033a42c2 MK |
2241 | /* Select the frame up one or COUNT_EXP stack levels from the |
2242 | previously selected frame, and print it briefly. */ | |
c906108c | 2243 | |
c906108c | 2244 | static void |
fba45db2 | 2245 | up_silently_base (char *count_exp) |
c906108c | 2246 | { |
033a42c2 MK |
2247 | struct frame_info *frame; |
2248 | int count = 1; | |
2249 | ||
c906108c | 2250 | if (count_exp) |
bb518678 | 2251 | count = parse_and_eval_long (count_exp); |
c5aa993b | 2252 | |
033a42c2 MK |
2253 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2254 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 2255 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 2256 | select_frame (frame); |
c906108c SS |
2257 | } |
2258 | ||
2259 | static void | |
fba45db2 | 2260 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 2261 | { |
c5aa993b | 2262 | up_silently_base (count_exp); |
c906108c SS |
2263 | } |
2264 | ||
2265 | static void | |
fba45db2 | 2266 | up_command (char *count_exp, int from_tty) |
c906108c SS |
2267 | { |
2268 | up_silently_base (count_exp); | |
b04f3ab4 | 2269 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2270 | } |
2271 | ||
033a42c2 MK |
2272 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
2273 | selected frame, and print it briefly. */ | |
c906108c | 2274 | |
c906108c | 2275 | static void |
fba45db2 | 2276 | down_silently_base (char *count_exp) |
c906108c | 2277 | { |
52f0bd74 | 2278 | struct frame_info *frame; |
033a42c2 | 2279 | int count = -1; |
f89b749f | 2280 | |
c906108c | 2281 | if (count_exp) |
bb518678 | 2282 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 2283 | |
033a42c2 MK |
2284 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
2285 | if (count != 0 && count_exp == NULL) | |
c906108c | 2286 | { |
033a42c2 MK |
2287 | /* We only do this if COUNT_EXP is not specified. That way |
2288 | "down" means to really go down (and let me know if that is | |
2289 | impossible), but "down 9999" can be used to mean go all the | |
2290 | way down without getting an error. */ | |
c906108c | 2291 | |
033a42c2 | 2292 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
2293 | } |
2294 | ||
0f7d239c | 2295 | select_frame (frame); |
c906108c SS |
2296 | } |
2297 | ||
c906108c | 2298 | static void |
fba45db2 | 2299 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
2300 | { |
2301 | down_silently_base (count_exp); | |
c906108c SS |
2302 | } |
2303 | ||
2304 | static void | |
fba45db2 | 2305 | down_command (char *count_exp, int from_tty) |
c906108c SS |
2306 | { |
2307 | down_silently_base (count_exp); | |
b04f3ab4 | 2308 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
2309 | } |
2310 | \f | |
033a42c2 | 2311 | |
8b93c638 | 2312 | void |
fba45db2 | 2313 | return_command (char *retval_exp, int from_tty) |
c906108c | 2314 | { |
5ed92fa8 | 2315 | struct frame_info *thisframe; |
d80b854b | 2316 | struct gdbarch *gdbarch; |
c906108c | 2317 | struct symbol *thisfun; |
3d6d86c6 | 2318 | struct value *return_value = NULL; |
fc70c2a0 | 2319 | const char *query_prefix = ""; |
c906108c | 2320 | |
5ed92fa8 UW |
2321 | thisframe = get_selected_frame ("No selected frame."); |
2322 | thisfun = get_frame_function (thisframe); | |
d80b854b | 2323 | gdbarch = get_frame_arch (thisframe); |
c906108c | 2324 | |
edb3359d DJ |
2325 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
2326 | error (_("Can not force return from an inlined function.")); | |
2327 | ||
fc70c2a0 AC |
2328 | /* Compute the return value. If the computation triggers an error, |
2329 | let it bail. If the return type can't be handled, set | |
2330 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
2331 | message. */ | |
c906108c SS |
2332 | if (retval_exp) |
2333 | { | |
61ff14c6 JK |
2334 | struct expression *retval_expr = parse_expression (retval_exp); |
2335 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
2336 | struct type *return_type = NULL; |
2337 | ||
fc70c2a0 AC |
2338 | /* Compute the return value. Should the computation fail, this |
2339 | call throws an error. */ | |
61ff14c6 | 2340 | return_value = evaluate_expression (retval_expr); |
c906108c | 2341 | |
fc70c2a0 AC |
2342 | /* Cast return value to the return type of the function. Should |
2343 | the cast fail, this call throws an error. */ | |
c906108c SS |
2344 | if (thisfun != NULL) |
2345 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
2346 | if (return_type == NULL) | |
61ff14c6 JK |
2347 | { |
2348 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
2349 | error (_("Return value type not available for selected " | |
2350 | "stack frame.\n" | |
2351 | "Please use an explicit cast of the value to return.")); | |
2352 | return_type = value_type (return_value); | |
2353 | } | |
2354 | do_cleanups (old_chain); | |
3e9a183c | 2355 | CHECK_TYPEDEF (return_type); |
c906108c SS |
2356 | return_value = value_cast (return_type, return_value); |
2357 | ||
fc70c2a0 AC |
2358 | /* Make sure the value is fully evaluated. It may live in the |
2359 | stack frame we're about to pop. */ | |
d69fe07e | 2360 | if (value_lazy (return_value)) |
c906108c | 2361 | value_fetch_lazy (return_value); |
c906108c | 2362 | |
667e784f AC |
2363 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
2364 | /* If the return-type is "void", don't try to find the | |
2365 | return-value's location. However, do still evaluate the | |
2366 | return expression so that, even when the expression result | |
2367 | is discarded, side effects such as "return i++" still | |
033a42c2 | 2368 | occur. */ |
667e784f | 2369 | return_value = NULL; |
42e2132c | 2370 | else if (thisfun != NULL |
d80b854b UW |
2371 | && using_struct_return (gdbarch, |
2372 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 2373 | { |
3e43a32a MS |
2374 | query_prefix = "The location at which to store the " |
2375 | "function's return value is unknown.\n" | |
2376 | "If you continue, the return value " | |
2377 | "that you specified will be ignored.\n"; | |
667e784f | 2378 | return_value = NULL; |
fc70c2a0 | 2379 | } |
c906108c SS |
2380 | } |
2381 | ||
fc70c2a0 AC |
2382 | /* Does an interactive user really want to do this? Include |
2383 | information, such as how well GDB can handle the return value, in | |
2384 | the query message. */ | |
2385 | if (from_tty) | |
2386 | { | |
2387 | int confirmed; | |
433759f7 | 2388 | |
fc70c2a0 | 2389 | if (thisfun == NULL) |
e2e0b3e5 | 2390 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2391 | query_prefix); |
2392 | else | |
e2e0b3e5 | 2393 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2394 | SYMBOL_PRINT_NAME (thisfun)); |
2395 | if (!confirmed) | |
8a3fe4f8 | 2396 | error (_("Not confirmed")); |
fc70c2a0 | 2397 | } |
c906108c | 2398 | |
a45ae3ed UW |
2399 | /* Discard the selected frame and all frames inner-to it. */ |
2400 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2401 | |
a1f5b845 | 2402 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2403 | if (return_value != NULL) |
2404 | { | |
df407dfe | 2405 | struct type *return_type = value_type (return_value); |
7500260a | 2406 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
2407 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
2408 | ||
2409 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
2410 | NULL, NULL) | |
750eb019 | 2411 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 2412 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 2413 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2414 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2415 | } |
1a2aab69 | 2416 | |
fc70c2a0 AC |
2417 | /* If we are at the end of a call dummy now, pop the dummy frame |
2418 | too. */ | |
e8bcf01f AC |
2419 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2420 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2421 | |
c906108c | 2422 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2423 | if (from_tty) |
2424 | frame_command ("0", 1); | |
2425 | else | |
2426 | select_frame_command ("0", 0); | |
2427 | } | |
2428 | ||
033a42c2 | 2429 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2430 | is within the current stack frame. */ |
c906108c SS |
2431 | |
2432 | struct function_bounds | |
2433 | { | |
2434 | CORE_ADDR low, high; | |
2435 | }; | |
2436 | ||
2437 | static void | |
fba45db2 | 2438 | func_command (char *arg, int from_tty) |
c906108c | 2439 | { |
033a42c2 | 2440 | struct frame_info *frame; |
c906108c SS |
2441 | int found = 0; |
2442 | struct symtabs_and_lines sals; | |
2443 | int i; | |
2444 | int level = 1; | |
033a42c2 | 2445 | struct function_bounds *func_bounds = NULL; |
f8eba3c6 | 2446 | struct cleanup *cleanups; |
c906108c | 2447 | |
033a42c2 | 2448 | if (arg != NULL) |
c906108c SS |
2449 | return; |
2450 | ||
033a42c2 | 2451 | frame = parse_frame_specification ("0"); |
f8eba3c6 TT |
2452 | sals = decode_line_spec (arg, DECODE_LINE_FUNFIRSTLINE); |
2453 | cleanups = make_cleanup (xfree, sals.sals); | |
c906108c SS |
2454 | func_bounds = (struct function_bounds *) xmalloc ( |
2455 | sizeof (struct function_bounds) * sals.nelts); | |
f8eba3c6 | 2456 | make_cleanup (xfree, func_bounds); |
c906108c SS |
2457 | for (i = 0; (i < sals.nelts && !found); i++) |
2458 | { | |
f8eba3c6 TT |
2459 | if (sals.sals[i].pspace != current_program_space) |
2460 | func_bounds[i].low = func_bounds[i].high = 0; | |
2461 | else if (sals.sals[i].pc == 0 | |
2462 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2463 | &func_bounds[i].low, | |
2464 | &func_bounds[i].high) == 0) | |
c906108c | 2465 | { |
033a42c2 | 2466 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2467 | } |
2468 | } | |
2469 | ||
2470 | do | |
2471 | { | |
2472 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2473 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2474 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2475 | if (!found) |
2476 | { | |
2477 | level = 1; | |
033a42c2 | 2478 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2479 | } |
2480 | } | |
2481 | while (!found && level == 0); | |
2482 | ||
f8eba3c6 | 2483 | do_cleanups (cleanups); |
c906108c SS |
2484 | |
2485 | if (!found) | |
a3f17187 | 2486 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2487 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2488 | select_and_print_frame (frame); |
c906108c SS |
2489 | } |
2490 | ||
2491 | /* Gets the language of the current frame. */ | |
2492 | ||
2493 | enum language | |
fba45db2 | 2494 | get_frame_language (void) |
c906108c | 2495 | { |
206415a3 | 2496 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2497 | |
033a42c2 | 2498 | if (frame) |
c906108c | 2499 | { |
e3eebbd7 PA |
2500 | volatile struct gdb_exception ex; |
2501 | CORE_ADDR pc = 0; | |
2502 | struct symtab *s; | |
2503 | ||
7ae4c3a5 | 2504 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2505 | associated symtab. To retrieve this symtab, we use the frame |
2506 | PC. However we cannot use the frame PC as is, because it | |
2507 | usually points to the instruction following the "call", which | |
2508 | is sometimes the first instruction of another function. So | |
2509 | we rely on get_frame_address_in_block(), it provides us with | |
2510 | a PC that is guaranteed to be inside the frame's code | |
2511 | block. */ | |
033a42c2 | 2512 | |
e3eebbd7 PA |
2513 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2514 | { | |
2515 | pc = get_frame_address_in_block (frame); | |
2516 | } | |
2517 | if (ex.reason < 0) | |
2518 | { | |
2519 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2520 | throw_exception (ex); | |
2521 | } | |
2522 | else | |
2523 | { | |
2524 | s = find_pc_symtab (pc); | |
2525 | if (s != NULL) | |
2526 | return s->language; | |
2527 | } | |
c906108c | 2528 | } |
c906108c | 2529 | |
033a42c2 | 2530 | return language_unknown; |
c906108c SS |
2531 | } |
2532 | \f | |
033a42c2 MK |
2533 | |
2534 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2535 | void _initialize_stack (void); | |
2536 | ||
c906108c | 2537 | void |
fba45db2 | 2538 | _initialize_stack (void) |
c906108c | 2539 | { |
1bedd215 AC |
2540 | add_com ("return", class_stack, return_command, _("\ |
2541 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2542 | Control remains in the debugger, but when you continue\n\ |
2543 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2544 | If an argument is given, it is an expression for the value to return.")); |
2545 | ||
2546 | add_com ("up", class_stack, up_command, _("\ | |
2547 | Select and print stack frame that called this one.\n\ | |
2548 | An argument says how many frames up to go.")); | |
2549 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2550 | Same as the `up' command, but does not print anything.\n\ | |
2551 | This is useful in command scripts.")); | |
2552 | ||
2553 | add_com ("down", class_stack, down_command, _("\ | |
2554 | Select and print stack frame called by this one.\n\ | |
2555 | An argument says how many frames down to go.")); | |
c906108c SS |
2556 | add_com_alias ("do", "down", class_stack, 1); |
2557 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2558 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2559 | Same as the `down' command, but does not print anything.\n\ | |
2560 | This is useful in command scripts.")); | |
c906108c | 2561 | |
1bedd215 | 2562 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2563 | Select and print a stack frame.\nWith no argument, \ |
2564 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2565 | An argument specifies the frame to select.\n\ |
2566 | It can be a stack frame number or the address of the frame.\n\ | |
2567 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2568 | a command file or a user-defined command.")); |
c906108c SS |
2569 | |
2570 | add_com_alias ("f", "frame", class_stack, 1); | |
2571 | ||
2572 | if (xdb_commands) | |
2573 | { | |
c5aa993b | 2574 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2575 | _("Print the current stack frame.\n")); |
c906108c SS |
2576 | add_com_alias ("V", "frame", class_stack, 1); |
2577 | } | |
1bedd215 AC |
2578 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2579 | Select a stack frame without printing anything.\n\ | |
c906108c | 2580 | An argument specifies the frame to select.\n\ |
1bedd215 | 2581 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2582 | |
1bedd215 AC |
2583 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2584 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a MS |
2585 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
2586 | 'full' qualifier also prints the values of the local variables.\n")); | |
c906108c SS |
2587 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2588 | if (xdb_commands) | |
2589 | { | |
2590 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2591 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2592 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2593 | and the values of the local variables.\n\ |
2594 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2595 | Usage: T <count>\n")); |
c906108c SS |
2596 | } |
2597 | ||
2598 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2599 | add_info ("stack", backtrace_command, | |
1bedd215 | 2600 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2601 | add_info_alias ("s", "stack", 1); |
2602 | add_info ("frame", frame_info, | |
1bedd215 | 2603 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2604 | add_info_alias ("f", "frame", 1); |
2605 | add_info ("locals", locals_info, | |
1bedd215 | 2606 | _("Local variables of current stack frame.")); |
c906108c | 2607 | add_info ("args", args_info, |
1bedd215 | 2608 | _("Argument variables of current stack frame.")); |
c906108c | 2609 | if (xdb_commands) |
c5aa993b | 2610 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2611 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2612 | |
2613 | if (dbx_commands) | |
1bedd215 AC |
2614 | add_com ("func", class_stack, func_command, _("\ |
2615 | Select the stack frame that contains <func>.\n\ | |
2616 | Usage: func <name>\n")); | |
c906108c SS |
2617 | |
2618 | add_info ("catch", catch_info, | |
1bedd215 | 2619 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2620 | |
88408340 JB |
2621 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2622 | print_frame_arguments_choices, &print_frame_arguments, | |
2623 | _("Set printing of non-scalar frame arguments"), | |
2624 | _("Show printing of non-scalar frame arguments"), | |
2625 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2626 | ||
30c33a9f HZ |
2627 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2628 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2629 | Set whether to disassemble next source line or insn when execution stops."), |
2630 | _("\ | |
2631 | Show whether to disassemble next source line or insn when execution stops."), | |
2632 | _("\ | |
80a0ea0f EZ |
2633 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2634 | to displaying the source line itself. If the next source line cannot\n\ | |
2635 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2636 | will display disassembly of next instruction instead of showing the\n\ | |
2637 | source line.\n\ | |
2638 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2639 | cannot be displayed.\n\ | |
2640 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2641 | source line."), | |
30c33a9f HZ |
2642 | NULL, |
2643 | show_disassemble_next_line, | |
2644 | &setlist, &showlist); | |
a362e3d3 | 2645 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
e18b2753 JK |
2646 | |
2647 | add_setshow_enum_cmd ("entry-values", class_stack, | |
2648 | print_entry_values_choices, &print_entry_values, | |
2649 | _("Set printing of function arguments at function " | |
2650 | "entry"), | |
2651 | _("Show printing of function arguments at function " | |
2652 | "entry"), | |
2653 | _("\ | |
2654 | GDB can sometimes determine the values of function arguments at entry,\n\ | |
2655 | in addition to their current values. This option tells GDB whether\n\ | |
2656 | to print the current value, the value at entry (marked as val@entry),\n\ | |
2657 | or both. Note that one or both of these values may be <optimized out>."), | |
2658 | NULL, NULL, &setprintlist, &showprintlist); | |
c906108c | 2659 | } |