Commit | Line | Data |
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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
7b6bb8da | 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include "value.h" |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "language.h" | |
28 | #include "frame.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "gdbcore.h" | |
31 | #include "target.h" | |
0378c332 | 32 | #include "source.h" |
c906108c SS |
33 | #include "breakpoint.h" |
34 | #include "demangle.h" | |
35 | #include "inferior.h" | |
36 | #include "annotate.h" | |
8b93c638 | 37 | #include "ui-out.h" |
fe898f56 | 38 | #include "block.h" |
b9362cc7 | 39 | #include "stack.h" |
de4f826b | 40 | #include "dictionary.h" |
60250e8b | 41 | #include "exceptions.h" |
898c62f5 | 42 | #include "reggroups.h" |
fc70c2a0 | 43 | #include "regcache.h" |
a77053c2 | 44 | #include "solib.h" |
033a42c2 | 45 | #include "valprint.h" |
8ea051c5 | 46 | #include "gdbthread.h" |
3567439c | 47 | #include "cp-support.h" |
30c33a9f | 48 | #include "disasm.h" |
edb3359d | 49 | #include "inline-frame.h" |
c906108c | 50 | |
033a42c2 MK |
51 | #include "gdb_assert.h" |
52 | #include <ctype.h> | |
53 | #include "gdb_string.h" | |
c906108c | 54 | |
ccefe4c4 TT |
55 | #include "psymtab.h" |
56 | #include "symfile.h" | |
57 | ||
9a4105ab | 58 | void (*deprecated_selected_frame_level_changed_hook) (int); |
c906108c | 59 | |
88408340 JB |
60 | /* The possible choices of "set print frame-arguments, and the value |
61 | of this setting. */ | |
62 | ||
63 | static const char *print_frame_arguments_choices[] = | |
64 | {"all", "scalars", "none", NULL}; | |
476f7b68 | 65 | static const char *print_frame_arguments = "scalars"; |
88408340 | 66 | |
c378eb4e | 67 | /* Prototypes for local functions. */ |
c906108c | 68 | |
d9fcf2fb JM |
69 | static void print_frame_local_vars (struct frame_info *, int, |
70 | struct ui_file *); | |
c906108c | 71 | |
033a42c2 MK |
72 | static void print_frame (struct frame_info *frame, int print_level, |
73 | enum print_what print_what, int print_args, | |
c5394b80 JM |
74 | struct symtab_and_line sal); |
75 | ||
c906108c SS |
76 | /* Zero means do things normally; we are interacting directly with the |
77 | user. One means print the full filename and linenumber when a | |
78 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
79 | parse. Two means print similar annotations, but in many more | |
80 | cases and in a slightly different syntax. */ | |
81 | ||
82 | int annotation_level = 0; | |
c906108c | 83 | \f |
c5aa993b | 84 | |
edb3359d DJ |
85 | /* Return 1 if we should display the address in addition to the location, |
86 | because we are in the middle of a statement. */ | |
87 | ||
88 | static int | |
89 | frame_show_address (struct frame_info *frame, | |
90 | struct symtab_and_line sal) | |
91 | { | |
92 | /* If there is a line number, but no PC, then there is no location | |
93 | information associated with this sal. The only way that should | |
94 | happen is for the call sites of inlined functions (SAL comes from | |
95 | find_frame_sal). Otherwise, we would have some PC range if the | |
96 | SAL came from a line table. */ | |
97 | if (sal.line != 0 && sal.pc == 0 && sal.end == 0) | |
98 | { | |
99 | if (get_next_frame (frame) == NULL) | |
100 | gdb_assert (inline_skipped_frames (inferior_ptid) > 0); | |
101 | else | |
102 | gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | return get_frame_pc (frame) != sal.pc; | |
107 | } | |
108 | ||
033a42c2 | 109 | /* Show or print a stack frame FRAME briefly. The output is format |
d762c46a AC |
110 | according to PRINT_LEVEL and PRINT_WHAT printing the frame's |
111 | relative level, function name, argument list, and file name and | |
112 | line number. If the frame's PC is not at the beginning of the | |
113 | source line, the actual PC is printed at the beginning. */ | |
c906108c SS |
114 | |
115 | void | |
033a42c2 | 116 | print_stack_frame (struct frame_info *frame, int print_level, |
0faf0076 | 117 | enum print_what print_what) |
c906108c | 118 | { |
311b5970 | 119 | volatile struct gdb_exception e; |
c906108c | 120 | |
aaf9e9fd | 121 | /* For mi, alway print location and address. */ |
311b5970 JK |
122 | if (ui_out_is_mi_like_p (uiout)) |
123 | print_what = LOC_AND_ADDRESS; | |
c906108c | 124 | |
311b5970 JK |
125 | TRY_CATCH (e, RETURN_MASK_ERROR) |
126 | { | |
127 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); | |
c906108c | 128 | |
311b5970 JK |
129 | print_frame_info (frame, print_level, print_what, 1 /* print_args */); |
130 | set_current_sal_from_frame (frame, center); | |
131 | } | |
132 | } | |
c906108c | 133 | |
033a42c2 MK |
134 | /* Print nameless arguments of frame FRAME on STREAM, where START is |
135 | the offset of the first nameless argument, and NUM is the number of | |
136 | nameless arguments to print. FIRST is nonzero if this is the first | |
137 | argument (not just the first nameless argument). */ | |
8d3b0994 AC |
138 | |
139 | static void | |
033a42c2 | 140 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
8d3b0994 AC |
141 | int first, struct ui_file *stream) |
142 | { | |
e17a4113 UW |
143 | struct gdbarch *gdbarch = get_frame_arch (frame); |
144 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
8d3b0994 AC |
145 | int i; |
146 | CORE_ADDR argsaddr; | |
147 | long arg_value; | |
148 | ||
149 | for (i = 0; i < num; i++) | |
150 | { | |
151 | QUIT; | |
033a42c2 | 152 | argsaddr = get_frame_args_address (frame); |
8d3b0994 AC |
153 | if (!argsaddr) |
154 | return; | |
e17a4113 UW |
155 | arg_value = read_memory_integer (argsaddr + start, |
156 | sizeof (int), byte_order); | |
8d3b0994 AC |
157 | if (!first) |
158 | fprintf_filtered (stream, ", "); | |
159 | fprintf_filtered (stream, "%ld", arg_value); | |
160 | first = 0; | |
161 | start += sizeof (int); | |
162 | } | |
163 | } | |
164 | ||
033a42c2 MK |
165 | /* Print the arguments of frame FRAME on STREAM, given the function |
166 | FUNC running in that frame (as a symbol), where NUM is the number | |
167 | of arguments according to the stack frame (or -1 if the number of | |
168 | arguments is unknown). */ | |
8d3b0994 | 169 | |
e3168615 | 170 | /* Note that currently the "number of arguments according to the |
033a42c2 | 171 | stack frame" is only known on VAX where i refers to the "number of |
e3168615 | 172 | ints of arguments according to the stack frame". */ |
8d3b0994 AC |
173 | |
174 | static void | |
033a42c2 MK |
175 | print_frame_args (struct symbol *func, struct frame_info *frame, |
176 | int num, struct ui_file *stream) | |
8d3b0994 | 177 | { |
8d3b0994 | 178 | int first = 1; |
8d3b0994 | 179 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
180 | at the highest offset, or -1 if we haven't come to a stack |
181 | argument yet. */ | |
8d3b0994 | 182 | long highest_offset = -1; |
8d3b0994 AC |
183 | /* Number of ints of arguments that we have printed so far. */ |
184 | int args_printed = 0; | |
185 | struct cleanup *old_chain, *list_chain; | |
186 | struct ui_stream *stb; | |
a6bac58e TT |
187 | /* True if we should print arguments, false otherwise. */ |
188 | int print_args = strcmp (print_frame_arguments, "none"); | |
189 | /* True in "summary" mode, false otherwise. */ | |
190 | int summary = !strcmp (print_frame_arguments, "scalars"); | |
8d3b0994 AC |
191 | |
192 | stb = ui_out_stream_new (uiout); | |
193 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
194 | ||
195 | if (func) | |
196 | { | |
033a42c2 MK |
197 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
198 | struct dict_iterator iter; | |
199 | struct symbol *sym; | |
200 | struct value *val; | |
8d3b0994 | 201 | |
de4f826b | 202 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
203 | { |
204 | QUIT; | |
205 | ||
206 | /* Keep track of the highest stack argument offset seen, and | |
207 | skip over any kinds of symbols we don't care about. */ | |
208 | ||
2a2d4dc3 AS |
209 | if (!SYMBOL_IS_ARGUMENT (sym)) |
210 | continue; | |
211 | ||
8d3b0994 AC |
212 | switch (SYMBOL_CLASS (sym)) |
213 | { | |
214 | case LOC_ARG: | |
215 | case LOC_REF_ARG: | |
216 | { | |
217 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 218 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
219 | |
220 | /* Compute address of next argument by adding the size of | |
221 | this argument and rounding to an int boundary. */ | |
222 | current_offset = | |
223 | ((current_offset + arg_size + sizeof (int) - 1) | |
224 | & ~(sizeof (int) - 1)); | |
225 | ||
033a42c2 MK |
226 | /* If this is the highest offset seen yet, set |
227 | highest_offset. */ | |
8d3b0994 AC |
228 | if (highest_offset == -1 |
229 | || (current_offset > highest_offset)) | |
230 | highest_offset = current_offset; | |
231 | ||
033a42c2 MK |
232 | /* Add the number of ints we're about to print to |
233 | args_printed. */ | |
8d3b0994 AC |
234 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
235 | } | |
236 | ||
033a42c2 MK |
237 | /* We care about types of symbols, but don't need to |
238 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 239 | case LOC_REGISTER: |
8d3b0994 | 240 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
241 | case LOC_COMPUTED: |
242 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 243 | default: |
2a2d4dc3 | 244 | break; |
8d3b0994 AC |
245 | } |
246 | ||
247 | /* We have to look up the symbol because arguments can have | |
248 | two entries (one a parameter, one a local) and the one we | |
249 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 250 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
251 | small structure and gcc2 when the argument type is float |
252 | and it is passed as a double and converted to float by | |
253 | the prologue (in the latter case the type of the LOC_ARG | |
254 | symbol is double and the type of the LOC_LOCAL symbol is | |
255 | float). */ | |
033a42c2 MK |
256 | /* But if the parameter name is null, don't try it. Null |
257 | parameter names occur on the RS/6000, for traceback | |
258 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 259 | |
3567439c | 260 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
261 | { |
262 | struct symbol *nsym; | |
433759f7 | 263 | |
3567439c | 264 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 265 | b, VAR_DOMAIN, NULL); |
55765a25 | 266 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
267 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
268 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 269 | { |
033a42c2 MK |
270 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
271 | that it was passed on the stack and loaded into a | |
272 | register, or passed in a register and stored in a | |
273 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
274 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
275 | |
276 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
277 | |
278 | (1) Because find_saved_registers may be slow for | |
279 | remote debugging. | |
280 | ||
281 | (2) Because registers are often re-used and stack | |
282 | slots rarely (never?) are. Therefore using | |
283 | the stack slot is much less likely to print | |
284 | garbage. | |
8d3b0994 AC |
285 | |
286 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
287 | |
288 | (1) So that the backtrace prints the same value | |
289 | as "print foo". I see no compelling reason | |
290 | why this needs to be the case; having the | |
291 | backtrace print the value which was passed | |
292 | in, and "print foo" print the value as | |
293 | modified within the called function, makes | |
294 | perfect sense to me. | |
295 | ||
296 | Additional note: It might be nice if "info args" | |
297 | displayed both values. | |
298 | ||
299 | One more note: There is a case with SPARC | |
300 | structure passing where we need to use the | |
301 | LOC_REGISTER, but this is dealt with by creating | |
302 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
303 | |
304 | /* Leave sym (the LOC_ARG) alone. */ | |
305 | ; | |
306 | } | |
307 | else | |
308 | sym = nsym; | |
309 | } | |
310 | ||
311 | /* Print the current arg. */ | |
312 | if (!first) | |
313 | ui_out_text (uiout, ", "); | |
314 | ui_out_wrap_hint (uiout, " "); | |
315 | ||
316 | annotate_arg_begin (); | |
317 | ||
318 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
319 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
033a42c2 MK |
320 | SYMBOL_LANGUAGE (sym), |
321 | DMGL_PARAMS | DMGL_ANSI); | |
8d3b0994 AC |
322 | ui_out_field_stream (uiout, "name", stb); |
323 | annotate_arg_name_end (); | |
324 | ui_out_text (uiout, "="); | |
325 | ||
a6bac58e | 326 | if (print_args) |
88408340 JB |
327 | { |
328 | /* Avoid value_print because it will deref ref parameters. | |
329 | We just want to print their addresses. Print ??? for | |
330 | args whose address we do not know. We pass 2 as | |
331 | "recurse" to val_print because our standard indentation | |
332 | here is 4 spaces, and val_print indents 2 for each | |
333 | recurse. */ | |
334 | val = read_var_value (sym, frame); | |
335 | ||
336 | annotate_arg_value (val == NULL ? NULL : value_type (val)); | |
337 | ||
338 | if (val) | |
339 | { | |
d8ca156b | 340 | const struct language_defn *language; |
79a45b7d | 341 | struct value_print_options opts; |
d8ca156b JB |
342 | |
343 | /* Use the appropriate language to display our symbol, | |
344 | unless the user forced the language to a specific | |
345 | language. */ | |
346 | if (language_mode == language_mode_auto) | |
347 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
348 | else | |
349 | language = current_language; | |
350 | ||
79a45b7d TT |
351 | get_raw_print_options (&opts); |
352 | opts.deref_ref = 0; | |
a6bac58e TT |
353 | opts.summary = summary; |
354 | common_val_print (val, stb->stream, 2, &opts, language); | |
88408340 JB |
355 | ui_out_field_stream (uiout, "value", stb); |
356 | } | |
357 | else | |
358 | ui_out_text (uiout, "???"); | |
359 | } | |
360 | else | |
361 | ui_out_text (uiout, "..."); | |
8d3b0994 | 362 | |
8d3b0994 AC |
363 | |
364 | /* Invoke ui_out_tuple_end. */ | |
365 | do_cleanups (list_chain); | |
366 | ||
367 | annotate_arg_end (); | |
368 | ||
369 | first = 0; | |
370 | } | |
371 | } | |
372 | ||
373 | /* Don't print nameless args in situations where we don't know | |
374 | enough about the stack to find them. */ | |
375 | if (num != -1) | |
376 | { | |
377 | long start; | |
378 | ||
379 | if (highest_offset == -1) | |
7500260a | 380 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
381 | else |
382 | start = highest_offset; | |
383 | ||
033a42c2 | 384 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
385 | first, stream); |
386 | } | |
033a42c2 | 387 | |
8d3b0994 AC |
388 | do_cleanups (old_chain); |
389 | } | |
390 | ||
033a42c2 MK |
391 | /* Set the current source and line to the location given by frame |
392 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
393 | line is in the center of the next 'list'. */ | |
c789492a | 394 | |
7abfe014 | 395 | void |
033a42c2 | 396 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
397 | { |
398 | struct symtab_and_line sal; | |
399 | ||
033a42c2 | 400 | find_frame_sal (frame, &sal); |
c789492a FL |
401 | if (sal.symtab) |
402 | { | |
403 | if (center) | |
404 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
405 | set_current_source_symtab_and_line (&sal); | |
406 | } | |
407 | } | |
408 | ||
30c33a9f HZ |
409 | /* If ON, GDB will display disassembly of the next source line when |
410 | execution of the program being debugged stops. | |
481df73e HZ |
411 | If AUTO (which is the default), or there's no line info to determine |
412 | the source line of the next instruction, display disassembly of next | |
413 | instruction instead. */ | |
30c33a9f HZ |
414 | |
415 | static enum auto_boolean disassemble_next_line; | |
416 | ||
417 | static void | |
418 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
419 | struct cmd_list_element *c, | |
420 | const char *value) | |
421 | { | |
3e43a32a MS |
422 | fprintf_filtered (file, |
423 | _("Debugger's willingness to use " | |
424 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
425 | value); |
426 | } | |
427 | ||
30c33a9f HZ |
428 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
429 | because it will be broken by filter sometime. */ | |
430 | ||
431 | static void | |
13274fc3 UW |
432 | do_gdb_disassembly (struct gdbarch *gdbarch, |
433 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
434 | { |
435 | volatile struct gdb_exception exception; | |
30c33a9f | 436 | |
b1d288d3 | 437 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 438 | { |
311b5970 JK |
439 | gdb_disassembly (gdbarch, uiout, 0, DISASSEMBLY_RAW_INSN, how_many, low, |
440 | high); | |
30c33a9f | 441 | } |
b1d288d3 JK |
442 | if (exception.reason < 0) |
443 | { | |
444 | /* If an exception was thrown while doing the disassembly, print | |
445 | the error message, to give the user a clue of what happened. */ | |
446 | exception_print (gdb_stderr, exception); | |
447 | } | |
30c33a9f HZ |
448 | } |
449 | ||
033a42c2 | 450 | /* Print information about frame FRAME. The output is format according |
65aa373f | 451 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
452 | PRINT_WHAT is: |
453 | ||
454 | SRC_LINE: Print only source line. | |
455 | LOCATION: Print only location. | |
456 | LOC_AND_SRC: Print location and source line. | |
457 | ||
458 | Used in "where" output, and to emit breakpoint or step | |
459 | messages. */ | |
c906108c | 460 | |
7789c6f5 | 461 | void |
033a42c2 | 462 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 463 | enum print_what print_what, int print_args) |
c906108c | 464 | { |
5af949e3 | 465 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 466 | struct symtab_and_line sal; |
c5394b80 JM |
467 | int source_print; |
468 | int location_print; | |
c906108c | 469 | |
033a42c2 | 470 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
471 | || get_frame_type (frame) == SIGTRAMP_FRAME |
472 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 473 | { |
075559bc AC |
474 | struct cleanup *uiout_cleanup |
475 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 476 | |
033a42c2 | 477 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 478 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 479 | |
c906108c | 480 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 481 | to list for this frame. */ |
0faf0076 | 482 | if (print_level) |
52c6a6ac JJ |
483 | { |
484 | ui_out_text (uiout, "#"); | |
0faf0076 | 485 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 486 | frame_relative_level (frame)); |
52c6a6ac | 487 | } |
075559bc | 488 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 489 | { |
075559bc | 490 | annotate_frame_address (); |
5af949e3 UW |
491 | ui_out_field_core_addr (uiout, "addr", |
492 | gdbarch, get_frame_pc (frame)); | |
075559bc | 493 | annotate_frame_address_end (); |
52c6a6ac | 494 | } |
6a3fe0a4 | 495 | |
033a42c2 | 496 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
497 | { |
498 | annotate_function_call (); | |
499 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
500 | } | |
033a42c2 | 501 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
502 | { |
503 | annotate_signal_handler_caller (); | |
504 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
505 | } | |
36f15f55 UW |
506 | else if (get_frame_type (frame) == ARCH_FRAME) |
507 | { | |
508 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
509 | } | |
075559bc | 510 | ui_out_text (uiout, "\n"); |
c906108c | 511 | annotate_frame_end (); |
075559bc AC |
512 | |
513 | do_cleanups (uiout_cleanup); | |
c906108c SS |
514 | return; |
515 | } | |
516 | ||
033a42c2 MK |
517 | /* If FRAME is not the innermost frame, that normally means that |
518 | FRAME->pc points to *after* the call instruction, and we want to | |
519 | get the line containing the call, never the next line. But if | |
520 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
521 | next frame was not entered as the result of a call, and we want | |
522 | to get the line containing FRAME->pc. */ | |
523 | find_frame_sal (frame, &sal); | |
c906108c | 524 | |
0faf0076 AC |
525 | location_print = (print_what == LOCATION |
526 | || print_what == LOC_AND_ADDRESS | |
527 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
528 | |
529 | if (location_print || !sal.symtab) | |
033a42c2 | 530 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 531 | |
0faf0076 | 532 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 533 | |
30c33a9f HZ |
534 | /* If disassemble-next-line is set to auto or on and doesn't have |
535 | the line debug messages for $pc, output the next instruction. */ | |
536 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
537 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
538 | && source_print && !sal.symtab) | |
13274fc3 UW |
539 | do_gdb_disassembly (get_frame_arch (frame), 1, |
540 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 541 | |
c5394b80 JM |
542 | if (source_print && sal.symtab) |
543 | { | |
544 | int done = 0; | |
0faf0076 | 545 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 546 | && frame_show_address (frame, sal)); |
c5394b80 JM |
547 | |
548 | if (annotation_level) | |
549 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 550 | get_frame_pc (frame)); |
c5394b80 JM |
551 | if (!done) |
552 | { | |
9a4105ab | 553 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
554 | deprecated_print_frame_info_listing_hook (sal.symtab, |
555 | sal.line, | |
556 | sal.line + 1, 0); | |
ba4bbdcb | 557 | else |
c5394b80 | 558 | { |
79a45b7d | 559 | struct value_print_options opts; |
433759f7 | 560 | |
79a45b7d | 561 | get_user_print_options (&opts); |
ba4bbdcb | 562 | /* We used to do this earlier, but that is clearly |
c378eb4e | 563 | wrong. This function is used by many different |
ba4bbdcb KS |
564 | parts of gdb, including normal_stop in infrun.c, |
565 | which uses this to print out the current PC | |
566 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
567 | line. Only the command line really wants this |
568 | behavior. Other UIs probably would like the | |
cbd3c883 | 569 | ability to decide for themselves if it is desired. */ |
79a45b7d | 570 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 571 | { |
5af949e3 UW |
572 | ui_out_field_core_addr (uiout, "addr", |
573 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 574 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
575 | } |
576 | ||
577 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 578 | } |
c5394b80 | 579 | } |
30c33a9f HZ |
580 | |
581 | /* If disassemble-next-line is set to on and there is line debug | |
582 | messages, output assembly codes for next line. */ | |
583 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 584 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
585 | } |
586 | ||
0faf0076 | 587 | if (print_what != LOCATION) |
e3eebbd7 PA |
588 | { |
589 | CORE_ADDR pc; | |
590 | ||
591 | if (get_frame_pc_if_available (frame, &pc)) | |
592 | set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line); | |
593 | else | |
594 | set_default_breakpoint (0, 0, 0, 0, 0); | |
595 | } | |
c5394b80 JM |
596 | |
597 | annotate_frame_end (); | |
598 | ||
599 | gdb_flush (gdb_stdout); | |
600 | } | |
601 | ||
e9e07ba6 JK |
602 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
603 | corresponding to FRAME. */ | |
604 | ||
f8f6f20b TJB |
605 | void |
606 | find_frame_funname (struct frame_info *frame, char **funname, | |
e9e07ba6 | 607 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
608 | { |
609 | struct symbol *func; | |
8b93c638 | 610 | |
f8f6f20b TJB |
611 | *funname = NULL; |
612 | *funlang = language_unknown; | |
e9e07ba6 JK |
613 | if (funcp) |
614 | *funcp = NULL; | |
c5394b80 | 615 | |
edb3359d | 616 | func = get_frame_function (frame); |
c906108c SS |
617 | if (func) |
618 | { | |
619 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
620 | function (when we are in the first function in a file which |
621 | is compiled without debugging symbols, the previous function | |
622 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
623 | that is supposed to tell us where the file with debugging |
624 | symbols ends has been truncated by ar because it is longer | |
625 | than 15 characters). This also occurs if the user uses asm() | |
626 | to create a function but not stabs for it (in a file compiled | |
627 | with -g). | |
c5aa993b JM |
628 | |
629 | So look in the minimal symbol tables as well, and if it comes | |
630 | up with a larger address for the function use that instead. | |
033a42c2 MK |
631 | I don't think this can ever cause any problems; there |
632 | shouldn't be any minimal symbols in the middle of a function; | |
633 | if this is ever changed many parts of GDB will need to be | |
634 | changed (and we'll create a find_pc_minimal_function or some | |
635 | such). */ | |
636 | ||
edb3359d DJ |
637 | struct minimal_symbol *msymbol = NULL; |
638 | ||
639 | /* Don't attempt to do this for inlined functions, which do not | |
640 | have a corresponding minimal symbol. */ | |
641 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
642 | msymbol | |
643 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 644 | |
c906108c | 645 | if (msymbol != NULL |
c5aa993b | 646 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
647 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
648 | { | |
c906108c SS |
649 | /* We also don't know anything about the function besides |
650 | its address and name. */ | |
651 | func = 0; | |
f8f6f20b TJB |
652 | *funname = SYMBOL_PRINT_NAME (msymbol); |
653 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
654 | } |
655 | else | |
656 | { | |
f8f6f20b TJB |
657 | *funname = SYMBOL_PRINT_NAME (func); |
658 | *funlang = SYMBOL_LANGUAGE (func); | |
e9e07ba6 JK |
659 | if (funcp) |
660 | *funcp = func; | |
f8f6f20b | 661 | if (*funlang == language_cplus) |
c5aa993b | 662 | { |
033a42c2 MK |
663 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
664 | to display the demangled name that we already have | |
665 | stored in the symbol table, but we stored a version | |
666 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 667 | display parameters. So remove the parameters. */ |
f8f6f20b | 668 | char *func_only = cp_remove_params (*funname); |
433759f7 | 669 | |
3567439c DJ |
670 | if (func_only) |
671 | { | |
f8f6f20b | 672 | *funname = func_only; |
3567439c DJ |
673 | make_cleanup (xfree, func_only); |
674 | } | |
c5aa993b | 675 | } |
c906108c SS |
676 | } |
677 | } | |
678 | else | |
679 | { | |
e3eebbd7 PA |
680 | struct minimal_symbol *msymbol; |
681 | CORE_ADDR pc; | |
033a42c2 | 682 | |
e3eebbd7 PA |
683 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
684 | return; | |
685 | ||
686 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
c906108c SS |
687 | if (msymbol != NULL) |
688 | { | |
f8f6f20b TJB |
689 | *funname = SYMBOL_PRINT_NAME (msymbol); |
690 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
691 | } |
692 | } | |
f8f6f20b TJB |
693 | } |
694 | ||
695 | static void | |
696 | print_frame (struct frame_info *frame, int print_level, | |
697 | enum print_what print_what, int print_args, | |
698 | struct symtab_and_line sal) | |
699 | { | |
5af949e3 | 700 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f8f6f20b TJB |
701 | char *funname = NULL; |
702 | enum language funlang = language_unknown; | |
703 | struct ui_stream *stb; | |
704 | struct cleanup *old_chain, *list_chain; | |
705 | struct value_print_options opts; | |
e9e07ba6 | 706 | struct symbol *func; |
e3eebbd7 PA |
707 | CORE_ADDR pc = 0; |
708 | int pc_p; | |
709 | ||
710 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b TJB |
711 | |
712 | stb = ui_out_stream_new (uiout); | |
713 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
714 | ||
e9e07ba6 | 715 | find_frame_funname (frame, &funname, &funlang, &func); |
c906108c | 716 | |
033a42c2 | 717 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 718 | gdbarch, pc); |
c5394b80 | 719 | |
666547aa | 720 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 721 | |
0faf0076 | 722 | if (print_level) |
8b93c638 | 723 | { |
8b93c638 | 724 | ui_out_text (uiout, "#"); |
0faf0076 | 725 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 726 | frame_relative_level (frame)); |
8b93c638 | 727 | } |
79a45b7d TT |
728 | get_user_print_options (&opts); |
729 | if (opts.addressprint) | |
e3eebbd7 PA |
730 | if (!sal.symtab |
731 | || frame_show_address (frame, sal) | |
0faf0076 | 732 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
733 | { |
734 | annotate_frame_address (); | |
e3eebbd7 PA |
735 | if (pc_p) |
736 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
737 | else | |
738 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
739 | annotate_frame_address_end (); |
740 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
741 | } |
742 | annotate_frame_function_name (); | |
033a42c2 MK |
743 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
744 | funlang, DMGL_ANSI); | |
8b93c638 JM |
745 | ui_out_field_stream (uiout, "func", stb); |
746 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
747 | annotate_frame_args (); |
748 | ||
8b93c638 | 749 | ui_out_text (uiout, " ("); |
0faf0076 | 750 | if (print_args) |
c906108c | 751 | { |
311b5970 JK |
752 | struct gdbarch *gdbarch = get_frame_arch (frame); |
753 | int numargs; | |
d493eb33 | 754 | struct cleanup *args_list_chain; |
311b5970 | 755 | volatile struct gdb_exception e; |
433759f7 | 756 | |
311b5970 JK |
757 | if (gdbarch_frame_num_args_p (gdbarch)) |
758 | { | |
759 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
760 | gdb_assert (numargs >= 0); | |
761 | } | |
762 | else | |
763 | numargs = -1; | |
764 | ||
68c81b54 | 765 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
766 | TRY_CATCH (e, RETURN_MASK_ERROR) |
767 | { | |
768 | print_frame_args (func, frame, numargs, gdb_stdout); | |
769 | } | |
c378eb4e | 770 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 771 | will have " that will not be properly escaped. */ |
666547aa | 772 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 773 | do_cleanups (args_list_chain); |
c5394b80 JM |
774 | QUIT; |
775 | } | |
8b93c638 | 776 | ui_out_text (uiout, ")"); |
c5394b80 JM |
777 | if (sal.symtab && sal.symtab->filename) |
778 | { | |
779 | annotate_frame_source_begin (); | |
8b93c638 JM |
780 | ui_out_wrap_hint (uiout, " "); |
781 | ui_out_text (uiout, " at "); | |
782 | annotate_frame_source_file (); | |
783 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
784 | if (ui_out_is_mi_like_p (uiout)) |
785 | { | |
786 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 787 | |
76ff342d DJ |
788 | if (fullname != NULL) |
789 | ui_out_field_string (uiout, "fullname", fullname); | |
790 | } | |
8b93c638 JM |
791 | annotate_frame_source_file_end (); |
792 | ui_out_text (uiout, ":"); | |
793 | annotate_frame_source_line (); | |
794 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
795 | annotate_frame_source_end (); |
796 | } | |
c906108c | 797 | |
e3eebbd7 | 798 | if (pc_p && (!funname || (!sal.symtab || !sal.symtab->filename))) |
c906108c | 799 | { |
a77053c2 | 800 | #ifdef PC_SOLIB |
033a42c2 | 801 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 802 | #else |
6c95b8df PA |
803 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
804 | get_frame_pc (frame)); | |
a77053c2 | 805 | #endif |
c5394b80 | 806 | if (lib) |
c906108c | 807 | { |
c5394b80 | 808 | annotate_frame_where (); |
8b93c638 JM |
809 | ui_out_wrap_hint (uiout, " "); |
810 | ui_out_text (uiout, " from "); | |
811 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 812 | } |
c906108c | 813 | } |
e514a9d6 | 814 | |
666547aa | 815 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 816 | do_cleanups (list_chain); |
8b93c638 JM |
817 | ui_out_text (uiout, "\n"); |
818 | do_cleanups (old_chain); | |
c906108c SS |
819 | } |
820 | \f | |
c5aa993b | 821 | |
033a42c2 MK |
822 | /* Read a frame specification in whatever the appropriate format is |
823 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
824 | specification is in any way invalid (so this function never returns | |
825 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
826 | the default selected frame was used. */ | |
c906108c | 827 | |
1c8831c5 AC |
828 | static struct frame_info * |
829 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
830 | int *selected_frame_p) | |
c906108c | 831 | { |
1c8831c5 AC |
832 | int numargs; |
833 | struct value *args[4]; | |
834 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 835 | |
1c8831c5 AC |
836 | if (frame_exp == NULL) |
837 | numargs = 0; | |
838 | else | |
c906108c | 839 | { |
1c8831c5 AC |
840 | numargs = 0; |
841 | while (1) | |
c906108c | 842 | { |
1c8831c5 AC |
843 | char *addr_string; |
844 | struct cleanup *cleanup; | |
845 | const char *p; | |
846 | ||
847 | /* Skip leading white space, bail of EOL. */ | |
848 | while (isspace (*frame_exp)) | |
849 | frame_exp++; | |
850 | if (!*frame_exp) | |
851 | break; | |
c906108c | 852 | |
1c8831c5 AC |
853 | /* Parse the argument, extract it, save it. */ |
854 | for (p = frame_exp; | |
855 | *p && !isspace (*p); | |
856 | p++); | |
857 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 858 | frame_exp = p; |
1c8831c5 AC |
859 | cleanup = make_cleanup (xfree, addr_string); |
860 | ||
861 | /* NOTE: Parse and evaluate expression, but do not use | |
862 | functions such as parse_and_eval_long or | |
863 | parse_and_eval_address to also extract the value. | |
864 | Instead value_as_long and value_as_address are used. | |
865 | This avoids problems with expressions that contain | |
866 | side-effects. */ | |
867 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 868 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
869 | args[numargs++] = parse_and_eval (addr_string); |
870 | ||
871 | do_cleanups (cleanup); | |
c906108c SS |
872 | } |
873 | } | |
874 | ||
1c8831c5 AC |
875 | /* If no args, default to the selected frame. */ |
876 | if (numargs == 0) | |
c906108c | 877 | { |
1c8831c5 AC |
878 | if (selected_frame_p != NULL) |
879 | (*selected_frame_p) = 1; | |
880 | return get_selected_frame (message); | |
881 | } | |
c906108c | 882 | |
1c8831c5 AC |
883 | /* None of the remaining use the selected frame. */ |
884 | if (selected_frame_p != NULL) | |
98f276a0 | 885 | (*selected_frame_p) = 0; |
c906108c | 886 | |
1c8831c5 AC |
887 | /* Assume the single arg[0] is an integer, and try using that to |
888 | select a frame relative to current. */ | |
889 | if (numargs == 1) | |
890 | { | |
891 | struct frame_info *fid; | |
892 | int level = value_as_long (args[0]); | |
433759f7 | 893 | |
1c8831c5 AC |
894 | fid = find_relative_frame (get_current_frame (), &level); |
895 | if (level == 0) | |
c378eb4e | 896 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
897 | return fid; |
898 | } | |
c906108c | 899 | |
1c8831c5 AC |
900 | /* Convert each value into a corresponding address. */ |
901 | { | |
902 | int i; | |
433759f7 | 903 | |
1c8831c5 | 904 | for (i = 0; i < numargs; i++) |
1e275f79 | 905 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 906 | } |
c5aa993b | 907 | |
1c8831c5 AC |
908 | /* Assume that the single arg[0] is an address, use that to identify |
909 | a frame with a matching ID. Should this also accept stack/pc or | |
910 | stack/pc/special. */ | |
911 | if (numargs == 1) | |
912 | { | |
913 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
914 | struct frame_info *fid; | |
915 | ||
1c8831c5 AC |
916 | /* If (s)he specifies the frame with an address, he deserves |
917 | what (s)he gets. Still, give the highest one that matches. | |
918 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
919 | know). */ | |
920 | for (fid = get_current_frame (); | |
921 | fid != NULL; | |
922 | fid = get_prev_frame (fid)) | |
923 | { | |
924 | if (frame_id_eq (id, get_frame_id (fid))) | |
925 | { | |
c7ce8faa DJ |
926 | struct frame_info *prev_frame; |
927 | ||
928 | while (1) | |
929 | { | |
930 | prev_frame = get_prev_frame (fid); | |
931 | if (!prev_frame | |
932 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
933 | break; | |
934 | fid = prev_frame; | |
935 | } | |
1c8831c5 AC |
936 | return fid; |
937 | } | |
938 | } | |
c906108c SS |
939 | } |
940 | ||
1c8831c5 AC |
941 | /* We couldn't identify the frame as an existing frame, but |
942 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
943 | if (numargs == 1) |
944 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
945 | else if (numargs == 2) |
946 | return create_new_frame (addrs[0], addrs[1]); | |
947 | else | |
8a3fe4f8 | 948 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
949 | } |
950 | ||
9c833c82 | 951 | static struct frame_info * |
1c8831c5 AC |
952 | parse_frame_specification (char *frame_exp) |
953 | { | |
954 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
955 | } |
956 | ||
033a42c2 MK |
957 | /* Print verbosely the selected frame or the frame at address |
958 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
959 | |
960 | static void | |
fba45db2 | 961 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
962 | { |
963 | struct frame_info *fi; | |
964 | struct symtab_and_line sal; | |
965 | struct symbol *func; | |
966 | struct symtab *s; | |
967 | struct frame_info *calling_frame_info; | |
167e4384 | 968 | int numregs; |
c906108c SS |
969 | char *funname = 0; |
970 | enum language funlang = language_unknown; | |
82de1e5b | 971 | const char *pc_regname; |
1c8831c5 | 972 | int selected_frame_p; |
7500260a | 973 | struct gdbarch *gdbarch; |
3567439c | 974 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
975 | CORE_ADDR frame_pc; |
976 | int frame_pc_p; | |
977 | CORE_ADDR caller_pc; | |
c906108c | 978 | |
1c8831c5 | 979 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 980 | gdbarch = get_frame_arch (fi); |
c906108c | 981 | |
82de1e5b AC |
982 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
983 | is not a good name. */ | |
12368003 | 984 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 985 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
986 | easily not match that of the internal value returned by |
987 | get_frame_pc(). */ | |
12368003 | 988 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 989 | else |
3e8c568d | 990 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
991 | architectures will often have a hardware register called "pc", |
992 | and that register's value, again, can easily not match | |
993 | get_frame_pc(). */ | |
994 | pc_regname = "pc"; | |
995 | ||
008f8f2e | 996 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 997 | find_frame_sal (fi, &sal); |
c906108c | 998 | func = get_frame_function (fi); |
008f8f2e | 999 | s = sal.symtab; |
c906108c SS |
1000 | if (func) |
1001 | { | |
3567439c | 1002 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1003 | funlang = SYMBOL_LANGUAGE (func); |
1004 | if (funlang == language_cplus) | |
1005 | { | |
3567439c DJ |
1006 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1007 | to display the demangled name that we already have | |
1008 | stored in the symbol table, but we stored a version | |
1009 | with DMGL_PARAMS turned on, and here we don't want to | |
1010 | display parameters. So remove the parameters. */ | |
1011 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1012 | |
3567439c DJ |
1013 | if (func_only) |
1014 | { | |
1015 | funname = func_only; | |
1016 | make_cleanup (xfree, func_only); | |
1017 | } | |
c5aa993b | 1018 | } |
c906108c | 1019 | } |
008f8f2e | 1020 | else if (frame_pc_p) |
c906108c | 1021 | { |
033a42c2 MK |
1022 | struct minimal_symbol *msymbol; |
1023 | ||
008f8f2e | 1024 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
c906108c SS |
1025 | if (msymbol != NULL) |
1026 | { | |
3567439c | 1027 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1028 | funlang = SYMBOL_LANGUAGE (msymbol); |
1029 | } | |
1030 | } | |
1031 | calling_frame_info = get_prev_frame (fi); | |
1032 | ||
1c8831c5 | 1033 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1034 | { |
a3f17187 | 1035 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1036 | frame_relative_level (fi)); |
c906108c SS |
1037 | } |
1038 | else | |
1039 | { | |
a3f17187 | 1040 | printf_filtered (_("Stack frame at ")); |
c906108c | 1041 | } |
5af949e3 | 1042 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1043 | printf_filtered (":\n"); |
82de1e5b | 1044 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1045 | if (frame_pc_p) |
1046 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1047 | else | |
1048 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1049 | |
1050 | wrap_here (" "); | |
1051 | if (funname) | |
1052 | { | |
1053 | printf_filtered (" in "); | |
1054 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1055 | DMGL_ANSI | DMGL_PARAMS); | |
1056 | } | |
1057 | wrap_here (" "); | |
1058 | if (sal.symtab) | |
1059 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1060 | puts_filtered ("; "); | |
1061 | wrap_here (" "); | |
82de1e5b | 1062 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1063 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1064 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1065 | else | |
1066 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1067 | printf_filtered ("\n"); |
1068 | ||
55feb689 DJ |
1069 | if (calling_frame_info == NULL) |
1070 | { | |
1071 | enum unwind_stop_reason reason; | |
1072 | ||
1073 | reason = get_frame_unwind_stop_reason (fi); | |
1074 | if (reason != UNWIND_NO_REASON) | |
1075 | printf_filtered (_(" Outermost frame: %s\n"), | |
1076 | frame_stop_reason_string (reason)); | |
1077 | } | |
edb3359d DJ |
1078 | else if (get_frame_type (fi) == INLINE_FRAME) |
1079 | printf_filtered (" inlined into frame %d", | |
1080 | frame_relative_level (get_prev_frame (fi))); | |
1081 | else | |
c906108c SS |
1082 | { |
1083 | printf_filtered (" called by frame at "); | |
5af949e3 | 1084 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1085 | gdb_stdout); |
c906108c | 1086 | } |
75e3c1f9 | 1087 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1088 | puts_filtered (","); |
1089 | wrap_here (" "); | |
75e3c1f9 | 1090 | if (get_next_frame (fi)) |
c906108c SS |
1091 | { |
1092 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1093 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1094 | gdb_stdout); |
c906108c | 1095 | } |
75e3c1f9 | 1096 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1097 | puts_filtered ("\n"); |
55feb689 | 1098 | |
c906108c | 1099 | if (s) |
1058bca7 AC |
1100 | printf_filtered (" source language %s.\n", |
1101 | language_str (s->language)); | |
c906108c | 1102 | |
c906108c SS |
1103 | { |
1104 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1105 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1106 | /* Number of args for this frame, or -1 if unknown. */ |
1107 | int numargs; | |
1108 | ||
1109 | if (arg_list == 0) | |
1110 | printf_filtered (" Arglist at unknown address.\n"); | |
1111 | else | |
1112 | { | |
1113 | printf_filtered (" Arglist at "); | |
5af949e3 | 1114 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1115 | printf_filtered (","); |
1116 | ||
7500260a | 1117 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1118 | { |
1119 | numargs = -1; | |
1120 | puts_filtered (" args: "); | |
1121 | } | |
c906108c | 1122 | else |
983a287a | 1123 | { |
7500260a | 1124 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1125 | gdb_assert (numargs >= 0); |
1126 | if (numargs == 0) | |
1127 | puts_filtered (" no args."); | |
1128 | else if (numargs == 1) | |
1129 | puts_filtered (" 1 arg: "); | |
1130 | else | |
1131 | printf_filtered (" %d args: ", numargs); | |
1132 | } | |
c906108c SS |
1133 | print_frame_args (func, fi, numargs, gdb_stdout); |
1134 | puts_filtered ("\n"); | |
1135 | } | |
1136 | } | |
1137 | { | |
1138 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1139 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1140 | |
1141 | if (arg_list == 0) | |
1142 | printf_filtered (" Locals at unknown address,"); | |
1143 | else | |
1144 | { | |
1145 | printf_filtered (" Locals at "); | |
5af949e3 | 1146 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1147 | printf_filtered (","); |
1148 | } | |
1149 | } | |
1150 | ||
4f460812 AC |
1151 | /* Print as much information as possible on the location of all the |
1152 | registers. */ | |
1153 | { | |
1154 | enum lval_type lval; | |
1155 | int optimized; | |
0fdb4f18 | 1156 | int unavailable; |
4f460812 AC |
1157 | CORE_ADDR addr; |
1158 | int realnum; | |
1159 | int count; | |
1160 | int i; | |
1161 | int need_nl = 1; | |
1162 | ||
1163 | /* The sp is special; what's displayed isn't the save address, but | |
1164 | the value of the previous frame's sp. This is a legacy thing, | |
1165 | at one stage the frame cached the previous frame's SP instead | |
1166 | of its address, hence it was easiest to just display the cached | |
1167 | value. */ | |
7500260a | 1168 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1169 | { |
1170 | /* Find out the location of the saved stack pointer with out | |
1171 | actually evaluating it. */ | |
7500260a | 1172 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1173 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1174 | &realnum, NULL); |
0fdb4f18 | 1175 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1176 | { |
e17a4113 UW |
1177 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1178 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1179 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1180 | CORE_ADDR sp; |
433759f7 | 1181 | |
7500260a | 1182 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1183 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1184 | &realnum, value); |
af1342ab AC |
1185 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1186 | stack pointer was packed as an unsigned integer. That | |
1187 | may or may not be valid. */ | |
e17a4113 | 1188 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1189 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1190 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1191 | printf_filtered ("\n"); |
1192 | need_nl = 0; | |
c906108c | 1193 | } |
0fdb4f18 | 1194 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1195 | { |
1196 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1197 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1198 | printf_filtered ("\n"); |
1199 | need_nl = 0; | |
1200 | } | |
0fdb4f18 | 1201 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1202 | { |
1203 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1204 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1205 | need_nl = 0; |
1206 | } | |
1207 | /* else keep quiet. */ | |
1208 | } | |
1209 | ||
1210 | count = 0; | |
7500260a UW |
1211 | numregs = gdbarch_num_regs (gdbarch) |
1212 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1213 | for (i = 0; i < numregs; i++) |
7500260a UW |
1214 | if (i != gdbarch_sp_regnum (gdbarch) |
1215 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1216 | { |
1217 | /* Find out the location of the saved register without | |
1218 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1219 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1220 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1221 | /* For moment, only display registers that were saved on the |
1222 | stack. */ | |
0fdb4f18 | 1223 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1224 | { |
1225 | if (count == 0) | |
1226 | puts_filtered (" Saved registers:\n "); | |
1227 | else | |
1228 | puts_filtered (","); | |
1229 | wrap_here (" "); | |
c9f4d572 | 1230 | printf_filtered (" %s at ", |
7500260a | 1231 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1232 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1233 | count++; |
1234 | } | |
1235 | } | |
1236 | if (count || need_nl) | |
c906108c | 1237 | puts_filtered ("\n"); |
4f460812 | 1238 | } |
3567439c DJ |
1239 | |
1240 | do_cleanups (back_to); | |
c906108c SS |
1241 | } |
1242 | ||
033a42c2 MK |
1243 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1244 | frames. */ | |
c906108c SS |
1245 | |
1246 | static void | |
fba45db2 | 1247 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1248 | { |
1249 | struct frame_info *fi; | |
52f0bd74 AC |
1250 | int count; |
1251 | int i; | |
1252 | struct frame_info *trailing; | |
1253 | int trailing_level; | |
c906108c SS |
1254 | |
1255 | if (!target_has_stack) | |
8a3fe4f8 | 1256 | error (_("No stack.")); |
c906108c | 1257 | |
033a42c2 MK |
1258 | /* The following code must do two things. First, it must set the |
1259 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1260 | printing. Second, it must set the variable count to the number |
1261 | of frames which we should print, or -1 if all of them. */ | |
1262 | trailing = get_current_frame (); | |
d082b2bb | 1263 | |
c906108c SS |
1264 | trailing_level = 0; |
1265 | if (count_exp) | |
1266 | { | |
bb518678 | 1267 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1268 | if (count < 0) |
1269 | { | |
1270 | struct frame_info *current; | |
1271 | ||
1272 | count = -count; | |
1273 | ||
1274 | current = trailing; | |
1275 | while (current && count--) | |
1276 | { | |
1277 | QUIT; | |
1278 | current = get_prev_frame (current); | |
1279 | } | |
c5aa993b | 1280 | |
033a42c2 MK |
1281 | /* Will stop when CURRENT reaches the top of the stack. |
1282 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1283 | while (current) |
1284 | { | |
1285 | QUIT; | |
1286 | trailing = get_prev_frame (trailing); | |
1287 | current = get_prev_frame (current); | |
1288 | trailing_level++; | |
1289 | } | |
c5aa993b | 1290 | |
c906108c SS |
1291 | count = -1; |
1292 | } | |
1293 | } | |
1294 | else | |
1295 | count = -1; | |
1296 | ||
1297 | if (info_verbose) | |
1298 | { | |
033a42c2 MK |
1299 | /* Read in symbols for all of the frames. Need to do this in a |
1300 | separate pass so that "Reading in symbols for xxx" messages | |
1301 | don't screw up the appearance of the backtrace. Also if | |
1302 | people have strong opinions against reading symbols for | |
c5aa993b | 1303 | backtrace this may have to be an option. */ |
c906108c | 1304 | i = count; |
033a42c2 | 1305 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1306 | { |
ccefe4c4 | 1307 | CORE_ADDR pc; |
433759f7 | 1308 | |
c906108c | 1309 | QUIT; |
ccefe4c4 TT |
1310 | pc = get_frame_address_in_block (fi); |
1311 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1312 | } |
1313 | } | |
1314 | ||
033a42c2 | 1315 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1316 | { |
1317 | QUIT; | |
1318 | ||
1319 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1320 | means further attempts to backtrace would fail (on the other |
1321 | hand, perhaps the code does or could be fixed to make sure | |
1322 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1323 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1324 | if (show_locals) |
c5aa993b | 1325 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1326 | |
1327 | /* Save the last frame to check for error conditions. */ | |
1328 | trailing = fi; | |
c906108c SS |
1329 | } |
1330 | ||
1331 | /* If we've stopped before the end, mention that. */ | |
1332 | if (fi && from_tty) | |
a3f17187 | 1333 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1334 | |
1335 | /* If we've run out of frames, and the reason appears to be an error | |
1336 | condition, print it. */ | |
1337 | if (fi == NULL && trailing != NULL) | |
1338 | { | |
1339 | enum unwind_stop_reason reason; | |
1340 | ||
1341 | reason = get_frame_unwind_stop_reason (trailing); | |
1342 | if (reason > UNWIND_FIRST_ERROR) | |
1343 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1344 | frame_stop_reason_string (reason)); | |
1345 | } | |
c906108c SS |
1346 | } |
1347 | ||
1348 | static void | |
fba45db2 | 1349 | backtrace_command (char *arg, int from_tty) |
c906108c | 1350 | { |
5fe41fbf | 1351 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
033a42c2 | 1352 | int fulltrace_arg = -1, arglen = 0, argc = 0; |
c906108c | 1353 | |
033a42c2 | 1354 | if (arg) |
c906108c | 1355 | { |
033a42c2 | 1356 | char **argv; |
c906108c SS |
1357 | int i; |
1358 | ||
d1a41061 | 1359 | argv = gdb_buildargv (arg); |
5fe41fbf | 1360 | make_cleanup_freeargv (argv); |
c906108c | 1361 | argc = 0; |
033a42c2 | 1362 | for (i = 0; argv[i]; i++) |
c5aa993b | 1363 | { |
745b8ca0 | 1364 | unsigned int j; |
c5aa993b | 1365 | |
033a42c2 | 1366 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1367 | argv[i][j] = tolower (argv[i][j]); |
1368 | ||
033a42c2 MK |
1369 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1370 | fulltrace_arg = argc; | |
c5aa993b JM |
1371 | else |
1372 | { | |
033a42c2 | 1373 | arglen += strlen (argv[i]); |
c5aa993b | 1374 | argc++; |
c5aa993b JM |
1375 | } |
1376 | } | |
033a42c2 MK |
1377 | arglen += argc; |
1378 | if (fulltrace_arg >= 0) | |
c5aa993b | 1379 | { |
033a42c2 | 1380 | if (arglen > 0) |
c5aa993b | 1381 | { |
033a42c2 | 1382 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1383 | make_cleanup (xfree, arg); |
1384 | arg[0] = 0; | |
033a42c2 | 1385 | for (i = 0; i < (argc + 1); i++) |
c5aa993b | 1386 | { |
033a42c2 | 1387 | if (i != fulltrace_arg) |
c5aa993b | 1388 | { |
033a42c2 MK |
1389 | strcat (arg, argv[i]); |
1390 | strcat (arg, " "); | |
c5aa993b JM |
1391 | } |
1392 | } | |
1393 | } | |
1394 | else | |
033a42c2 | 1395 | arg = NULL; |
c5aa993b | 1396 | } |
c906108c SS |
1397 | } |
1398 | ||
b1d288d3 | 1399 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty); |
c906108c | 1400 | |
5fe41fbf | 1401 | do_cleanups (old_chain); |
c906108c SS |
1402 | } |
1403 | ||
1404 | static void | |
fba45db2 | 1405 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1406 | { |
b1d288d3 | 1407 | backtrace_command_1 (arg, 1 /* show_locals */, from_tty); |
c906108c | 1408 | } |
c906108c | 1409 | \f |
c5aa993b | 1410 | |
2c58c0a9 PA |
1411 | /* Iterate over the local variables of a block B, calling CB with |
1412 | CB_DATA. */ | |
c906108c | 1413 | |
2c58c0a9 PA |
1414 | static void |
1415 | iterate_over_block_locals (struct block *b, | |
1416 | iterate_over_block_arg_local_vars_cb cb, | |
1417 | void *cb_data) | |
c906108c | 1418 | { |
de4f826b | 1419 | struct dict_iterator iter; |
de4f826b | 1420 | struct symbol *sym; |
c906108c | 1421 | |
de4f826b | 1422 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1423 | { |
c906108c SS |
1424 | switch (SYMBOL_CLASS (sym)) |
1425 | { | |
1426 | case LOC_LOCAL: | |
1427 | case LOC_REGISTER: | |
1428 | case LOC_STATIC: | |
4c2df51b | 1429 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1430 | if (SYMBOL_IS_ARGUMENT (sym)) |
1431 | break; | |
2c58c0a9 | 1432 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1433 | break; |
1434 | ||
1435 | default: | |
1436 | /* Ignore symbols which are not locals. */ | |
1437 | break; | |
1438 | } | |
1439 | } | |
c906108c SS |
1440 | } |
1441 | ||
65c06092 | 1442 | |
c906108c SS |
1443 | /* Same, but print labels. */ |
1444 | ||
65c06092 JB |
1445 | #if 0 |
1446 | /* Commented out, as the code using this function has also been | |
1447 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1448 | was commented out in the first place. The discussion introducing | |
1449 | this change (2007-12-04: Support lexical blocks and function bodies | |
1450 | that occupy non-contiguous address ranges) did not explain why | |
1451 | this change was made. */ | |
c906108c | 1452 | static int |
5af949e3 UW |
1453 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1454 | int *have_default, struct ui_file *stream) | |
c906108c | 1455 | { |
de4f826b | 1456 | struct dict_iterator iter; |
52f0bd74 AC |
1457 | struct symbol *sym; |
1458 | int values_printed = 0; | |
c906108c | 1459 | |
de4f826b | 1460 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1461 | { |
3567439c | 1462 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1463 | { |
1464 | if (*have_default) | |
1465 | continue; | |
1466 | *have_default = 1; | |
1467 | } | |
1468 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1469 | { | |
1470 | struct symtab_and_line sal; | |
79a45b7d | 1471 | struct value_print_options opts; |
433759f7 | 1472 | |
c906108c SS |
1473 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1474 | values_printed = 1; | |
de5ad195 | 1475 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1476 | get_user_print_options (&opts); |
1477 | if (opts.addressprint) | |
c906108c SS |
1478 | { |
1479 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1480 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1481 | stream); | |
c906108c SS |
1482 | } |
1483 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1484 | sal.symtab->filename, sal.line); | |
1485 | } | |
1486 | } | |
033a42c2 | 1487 | |
c906108c SS |
1488 | return values_printed; |
1489 | } | |
65c06092 | 1490 | #endif |
c906108c | 1491 | |
2c58c0a9 PA |
1492 | /* Iterate over all the local variables in block B, including all its |
1493 | superblocks, stopping when the top-level block is reached. */ | |
1494 | ||
1495 | void | |
1496 | iterate_over_block_local_vars (struct block *block, | |
1497 | iterate_over_block_arg_local_vars_cb cb, | |
1498 | void *cb_data) | |
1499 | { | |
1500 | while (block) | |
1501 | { | |
1502 | iterate_over_block_locals (block, cb, cb_data); | |
1503 | /* After handling the function's top-level block, stop. Don't | |
1504 | continue to its superblock, the block of per-file | |
1505 | symbols. */ | |
1506 | if (BLOCK_FUNCTION (block)) | |
1507 | break; | |
1508 | block = BLOCK_SUPERBLOCK (block); | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | /* Data to be passed around in the calls to the locals and args | |
1513 | iterators. */ | |
c906108c | 1514 | |
2c58c0a9 PA |
1515 | struct print_variable_and_value_data |
1516 | { | |
1517 | struct frame_info *frame; | |
1518 | int num_tabs; | |
1519 | struct ui_file *stream; | |
1520 | int values_printed; | |
1521 | }; | |
1522 | ||
c378eb4e | 1523 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
1524 | |
1525 | static void | |
1526 | do_print_variable_and_value (const char *print_name, | |
1527 | struct symbol *sym, | |
1528 | void *cb_data) | |
1529 | { | |
1530 | struct print_variable_and_value_data *p = cb_data; | |
1531 | ||
1532 | print_variable_and_value (print_name, sym, | |
1533 | p->frame, p->stream, p->num_tabs); | |
1534 | p->values_printed = 1; | |
1535 | } | |
c906108c SS |
1536 | |
1537 | static void | |
033a42c2 | 1538 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1539 | struct ui_file *stream) |
c906108c | 1540 | { |
2c58c0a9 PA |
1541 | struct print_variable_and_value_data cb_data; |
1542 | struct block *block; | |
1d4f5741 PA |
1543 | CORE_ADDR pc; |
1544 | ||
1545 | if (!get_frame_pc_if_available (frame, &pc)) | |
1546 | { | |
1547 | fprintf_filtered (stream, | |
1548 | _("PC unavailable, cannot determine locals.\n")); | |
1549 | return; | |
1550 | } | |
c906108c | 1551 | |
2c58c0a9 | 1552 | block = get_frame_block (frame, 0); |
c906108c SS |
1553 | if (block == 0) |
1554 | { | |
1555 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1556 | return; | |
1557 | } | |
c5aa993b | 1558 | |
2c58c0a9 PA |
1559 | cb_data.frame = frame; |
1560 | cb_data.num_tabs = 4 * num_tabs; | |
1561 | cb_data.stream = stream; | |
1562 | cb_data.values_printed = 0; | |
1563 | ||
1564 | iterate_over_block_local_vars (block, | |
1565 | do_print_variable_and_value, | |
1566 | &cb_data); | |
c906108c | 1567 | |
2c58c0a9 | 1568 | if (!cb_data.values_printed) |
033a42c2 | 1569 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1570 | } |
1571 | ||
1572 | /* Same, but print labels. */ | |
1573 | ||
1574 | static void | |
033a42c2 | 1575 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1576 | struct ui_file *stream) |
c906108c | 1577 | { |
801e3a5b JB |
1578 | #if 1 |
1579 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1580 | #else | |
52f0bd74 | 1581 | struct blockvector *bl; |
033a42c2 | 1582 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1583 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1584 | int values_printed = 0; |
c906108c SS |
1585 | int index, have_default = 0; |
1586 | char *blocks_printed; | |
033a42c2 | 1587 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1588 | |
1589 | if (block == 0) | |
1590 | { | |
1591 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1592 | return; | |
1593 | } | |
1594 | ||
1595 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1596 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1597 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1598 | ||
1599 | while (block != 0) | |
1600 | { | |
1601 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1602 | int last_index; | |
1603 | ||
1604 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1605 | error (_("blockvector blotch")); |
c906108c | 1606 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1607 | error (_("blockvector botch")); |
c906108c SS |
1608 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1609 | index += 1; | |
1610 | ||
1611 | /* Don't print out blocks that have gone by. */ | |
1612 | while (index < last_index | |
1613 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1614 | index++; | |
1615 | ||
1616 | while (index < last_index | |
1617 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1618 | { | |
1619 | if (blocks_printed[index] == 0) | |
1620 | { | |
5af949e3 UW |
1621 | if (print_block_frame_labels (gdbarch, |
1622 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 1623 | &have_default, stream)) |
c906108c SS |
1624 | values_printed = 1; |
1625 | blocks_printed[index] = 1; | |
1626 | } | |
1627 | index++; | |
1628 | } | |
1629 | if (have_default) | |
1630 | return; | |
1631 | if (values_printed && this_level_only) | |
1632 | return; | |
1633 | ||
033a42c2 | 1634 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1635 | continue to its superblock, the block of per-file symbols. |
1636 | Also do not continue to the containing function of an inlined | |
1637 | function. */ | |
c906108c SS |
1638 | if (BLOCK_FUNCTION (block)) |
1639 | break; | |
1640 | block = BLOCK_SUPERBLOCK (block); | |
1641 | } | |
1642 | ||
1643 | if (!values_printed && !this_level_only) | |
033a42c2 | 1644 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1645 | #endif |
c906108c SS |
1646 | } |
1647 | ||
c906108c | 1648 | void |
fba45db2 | 1649 | locals_info (char *args, int from_tty) |
c906108c | 1650 | { |
033a42c2 | 1651 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1652 | 0, gdb_stdout); |
c906108c SS |
1653 | } |
1654 | ||
1655 | static void | |
fba45db2 | 1656 | catch_info (char *ignore, int from_tty) |
c906108c | 1657 | { |
dfdfb3ca JB |
1658 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1659 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1660 | 0, gdb_stdout); | |
c906108c SS |
1661 | } |
1662 | ||
2c58c0a9 PA |
1663 | /* Iterate over all the argument variables in block B. |
1664 | ||
1665 | Returns 1 if any argument was walked; 0 otherwise. */ | |
1666 | ||
1667 | void | |
1668 | iterate_over_block_arg_vars (struct block *b, | |
1669 | iterate_over_block_arg_local_vars_cb cb, | |
1670 | void *cb_data) | |
c906108c | 1671 | { |
de4f826b | 1672 | struct dict_iterator iter; |
52f0bd74 | 1673 | struct symbol *sym, *sym2; |
c906108c | 1674 | |
de4f826b | 1675 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1676 | { |
2a2d4dc3 AS |
1677 | /* Don't worry about things which aren't arguments. */ |
1678 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1679 | { |
c906108c SS |
1680 | /* We have to look up the symbol because arguments can have |
1681 | two entries (one a parameter, one a local) and the one we | |
1682 | want is the local, which lookup_symbol will find for us. | |
1683 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1684 | small structure and gcc2 when the argument type is float | |
1685 | and it is passed as a double and converted to float by | |
1686 | the prologue (in the latter case the type of the LOC_ARG | |
1687 | symbol is double and the type of the LOC_LOCAL symbol is | |
1688 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1689 | are not combined in symbol-reading. */ | |
1690 | ||
3567439c | 1691 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 1692 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 1693 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
1694 | } |
1695 | } | |
2c58c0a9 PA |
1696 | } |
1697 | ||
1698 | static void | |
1699 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
1700 | { | |
1701 | struct print_variable_and_value_data cb_data; | |
1702 | struct symbol *func; | |
1d4f5741 PA |
1703 | CORE_ADDR pc; |
1704 | ||
1705 | if (!get_frame_pc_if_available (frame, &pc)) | |
1706 | { | |
1707 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
1708 | return; | |
1709 | } | |
2c58c0a9 PA |
1710 | |
1711 | func = get_frame_function (frame); | |
1712 | if (func == NULL) | |
1713 | { | |
1714 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
1715 | return; | |
1716 | } | |
1717 | ||
1718 | cb_data.frame = frame; | |
1719 | cb_data.num_tabs = 0; | |
1720 | cb_data.stream = gdb_stdout; | |
1721 | cb_data.values_printed = 0; | |
1722 | ||
1723 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
1724 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 1725 | |
2c58c0a9 | 1726 | if (!cb_data.values_printed) |
033a42c2 | 1727 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1728 | } |
1729 | ||
1730 | void | |
fba45db2 | 1731 | args_info (char *ignore, int from_tty) |
c906108c | 1732 | { |
033a42c2 | 1733 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1734 | gdb_stdout); |
c906108c SS |
1735 | } |
1736 | ||
1737 | ||
1738 | static void | |
fba45db2 | 1739 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1740 | { |
c5aa993b JM |
1741 | args_info (ignore, from_tty); |
1742 | locals_info (ignore, from_tty); | |
c906108c | 1743 | } |
c906108c | 1744 | \f |
c5aa993b | 1745 | |
033a42c2 MK |
1746 | /* Select frame FRAME. Also print the stack frame and show the source |
1747 | if this is the tui version. */ | |
bedfa57b | 1748 | static void |
033a42c2 | 1749 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1750 | { |
033a42c2 MK |
1751 | select_frame (frame); |
1752 | if (frame) | |
1753 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1754 | } |
c906108c | 1755 | \f |
c906108c | 1756 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1757 | Can return zero under various legitimate circumstances. |
1758 | ||
1759 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1760 | code address within the block returned. We use this to decide | |
1761 | which macros are in scope. */ | |
c906108c SS |
1762 | |
1763 | struct block * | |
ae767bfb | 1764 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 1765 | { |
d729566a | 1766 | if (!has_stack_frames ()) |
8ea051c5 PA |
1767 | return 0; |
1768 | ||
206415a3 | 1769 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1770 | } |
1771 | ||
1772 | /* Find a frame a certain number of levels away from FRAME. | |
1773 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1774 | Positive means go to earlier frames (up); negative, the reverse. | |
1775 | The int that contains the number of levels is counted toward | |
1776 | zero as the frames for those levels are found. | |
1777 | If the top or bottom frame is reached, that frame is returned, | |
1778 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1779 | how much farther the original request asked to go. */ | |
1780 | ||
1781 | struct frame_info * | |
033a42c2 | 1782 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1783 | { |
033a42c2 MK |
1784 | /* Going up is simple: just call get_prev_frame enough times or |
1785 | until the initial frame is reached. */ | |
c906108c SS |
1786 | while (*level_offset_ptr > 0) |
1787 | { | |
033a42c2 | 1788 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 1789 | |
033a42c2 | 1790 | if (!prev) |
c906108c SS |
1791 | break; |
1792 | (*level_offset_ptr)--; | |
1793 | frame = prev; | |
1794 | } | |
033a42c2 | 1795 | |
c906108c | 1796 | /* Going down is just as simple. */ |
033a42c2 | 1797 | while (*level_offset_ptr < 0) |
c906108c | 1798 | { |
033a42c2 | 1799 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 1800 | |
033a42c2 MK |
1801 | if (!next) |
1802 | break; | |
1803 | (*level_offset_ptr)++; | |
1804 | frame = next; | |
c906108c | 1805 | } |
033a42c2 | 1806 | |
c906108c SS |
1807 | return frame; |
1808 | } | |
1809 | ||
033a42c2 MK |
1810 | /* The "select_frame" command. With no argument this is a NOP. |
1811 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1812 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1813 | ||
1814 | See parse_frame_specification for more info on proper frame | |
1815 | expressions. */ | |
c906108c | 1816 | |
8b93c638 | 1817 | void |
fba45db2 | 1818 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1819 | { |
1c8831c5 | 1820 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1821 | } |
1822 | ||
033a42c2 MK |
1823 | /* The "frame" command. With no argument, print the selected frame |
1824 | briefly. With an argument, behave like select_frame and then print | |
1825 | the selected frame. */ | |
c906108c | 1826 | |
033a42c2 | 1827 | static void |
fba45db2 | 1828 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1829 | { |
1830 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1831 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1832 | } |
1833 | ||
033a42c2 | 1834 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1835 | |
7a292a7a | 1836 | static void |
fba45db2 | 1837 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1838 | { |
033a42c2 | 1839 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1840 | } |
c906108c | 1841 | |
033a42c2 MK |
1842 | /* Select the frame up one or COUNT_EXP stack levels from the |
1843 | previously selected frame, and print it briefly. */ | |
c906108c | 1844 | |
c906108c | 1845 | static void |
fba45db2 | 1846 | up_silently_base (char *count_exp) |
c906108c | 1847 | { |
033a42c2 MK |
1848 | struct frame_info *frame; |
1849 | int count = 1; | |
1850 | ||
c906108c | 1851 | if (count_exp) |
bb518678 | 1852 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1853 | |
033a42c2 MK |
1854 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1855 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1856 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1857 | select_frame (frame); |
c906108c SS |
1858 | } |
1859 | ||
1860 | static void | |
fba45db2 | 1861 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1862 | { |
c5aa993b | 1863 | up_silently_base (count_exp); |
c906108c SS |
1864 | } |
1865 | ||
1866 | static void | |
fba45db2 | 1867 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1868 | { |
1869 | up_silently_base (count_exp); | |
b04f3ab4 | 1870 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1871 | } |
1872 | ||
033a42c2 MK |
1873 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1874 | selected frame, and print it briefly. */ | |
c906108c | 1875 | |
c906108c | 1876 | static void |
fba45db2 | 1877 | down_silently_base (char *count_exp) |
c906108c | 1878 | { |
52f0bd74 | 1879 | struct frame_info *frame; |
033a42c2 | 1880 | int count = -1; |
f89b749f | 1881 | |
c906108c | 1882 | if (count_exp) |
bb518678 | 1883 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1884 | |
033a42c2 MK |
1885 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1886 | if (count != 0 && count_exp == NULL) | |
c906108c | 1887 | { |
033a42c2 MK |
1888 | /* We only do this if COUNT_EXP is not specified. That way |
1889 | "down" means to really go down (and let me know if that is | |
1890 | impossible), but "down 9999" can be used to mean go all the | |
1891 | way down without getting an error. */ | |
c906108c | 1892 | |
033a42c2 | 1893 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1894 | } |
1895 | ||
0f7d239c | 1896 | select_frame (frame); |
c906108c SS |
1897 | } |
1898 | ||
c906108c | 1899 | static void |
fba45db2 | 1900 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1901 | { |
1902 | down_silently_base (count_exp); | |
c906108c SS |
1903 | } |
1904 | ||
1905 | static void | |
fba45db2 | 1906 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1907 | { |
1908 | down_silently_base (count_exp); | |
b04f3ab4 | 1909 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1910 | } |
1911 | \f | |
033a42c2 | 1912 | |
8b93c638 | 1913 | void |
fba45db2 | 1914 | return_command (char *retval_exp, int from_tty) |
c906108c | 1915 | { |
5ed92fa8 | 1916 | struct frame_info *thisframe; |
d80b854b | 1917 | struct gdbarch *gdbarch; |
c906108c | 1918 | struct symbol *thisfun; |
3d6d86c6 | 1919 | struct value *return_value = NULL; |
fc70c2a0 | 1920 | const char *query_prefix = ""; |
c906108c | 1921 | |
5ed92fa8 UW |
1922 | thisframe = get_selected_frame ("No selected frame."); |
1923 | thisfun = get_frame_function (thisframe); | |
d80b854b | 1924 | gdbarch = get_frame_arch (thisframe); |
c906108c | 1925 | |
edb3359d DJ |
1926 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
1927 | error (_("Can not force return from an inlined function.")); | |
1928 | ||
fc70c2a0 AC |
1929 | /* Compute the return value. If the computation triggers an error, |
1930 | let it bail. If the return type can't be handled, set | |
1931 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1932 | message. */ | |
c906108c SS |
1933 | if (retval_exp) |
1934 | { | |
61ff14c6 JK |
1935 | struct expression *retval_expr = parse_expression (retval_exp); |
1936 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
1937 | struct type *return_type = NULL; |
1938 | ||
fc70c2a0 AC |
1939 | /* Compute the return value. Should the computation fail, this |
1940 | call throws an error. */ | |
61ff14c6 | 1941 | return_value = evaluate_expression (retval_expr); |
c906108c | 1942 | |
fc70c2a0 AC |
1943 | /* Cast return value to the return type of the function. Should |
1944 | the cast fail, this call throws an error. */ | |
c906108c SS |
1945 | if (thisfun != NULL) |
1946 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1947 | if (return_type == NULL) | |
61ff14c6 JK |
1948 | { |
1949 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
1950 | error (_("Return value type not available for selected " | |
1951 | "stack frame.\n" | |
1952 | "Please use an explicit cast of the value to return.")); | |
1953 | return_type = value_type (return_value); | |
1954 | } | |
1955 | do_cleanups (old_chain); | |
3e9a183c | 1956 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1957 | return_value = value_cast (return_type, return_value); |
1958 | ||
fc70c2a0 AC |
1959 | /* Make sure the value is fully evaluated. It may live in the |
1960 | stack frame we're about to pop. */ | |
d69fe07e | 1961 | if (value_lazy (return_value)) |
c906108c | 1962 | value_fetch_lazy (return_value); |
c906108c | 1963 | |
667e784f AC |
1964 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1965 | /* If the return-type is "void", don't try to find the | |
1966 | return-value's location. However, do still evaluate the | |
1967 | return expression so that, even when the expression result | |
1968 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1969 | occur. */ |
667e784f | 1970 | return_value = NULL; |
42e2132c | 1971 | else if (thisfun != NULL |
d80b854b UW |
1972 | && using_struct_return (gdbarch, |
1973 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 1974 | { |
3e43a32a MS |
1975 | query_prefix = "The location at which to store the " |
1976 | "function's return value is unknown.\n" | |
1977 | "If you continue, the return value " | |
1978 | "that you specified will be ignored.\n"; | |
667e784f | 1979 | return_value = NULL; |
fc70c2a0 | 1980 | } |
c906108c SS |
1981 | } |
1982 | ||
fc70c2a0 AC |
1983 | /* Does an interactive user really want to do this? Include |
1984 | information, such as how well GDB can handle the return value, in | |
1985 | the query message. */ | |
1986 | if (from_tty) | |
1987 | { | |
1988 | int confirmed; | |
433759f7 | 1989 | |
fc70c2a0 | 1990 | if (thisfun == NULL) |
e2e0b3e5 | 1991 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
1992 | query_prefix); |
1993 | else | |
e2e0b3e5 | 1994 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
1995 | SYMBOL_PRINT_NAME (thisfun)); |
1996 | if (!confirmed) | |
8a3fe4f8 | 1997 | error (_("Not confirmed")); |
fc70c2a0 | 1998 | } |
c906108c | 1999 | |
a45ae3ed UW |
2000 | /* Discard the selected frame and all frames inner-to it. */ |
2001 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2002 | |
a1f5b845 | 2003 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2004 | if (return_value != NULL) |
2005 | { | |
df407dfe | 2006 | struct type *return_type = value_type (return_value); |
7500260a | 2007 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
2008 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
2009 | ||
2010 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
2011 | NULL, NULL) | |
750eb019 | 2012 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 2013 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 2014 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2015 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2016 | } |
1a2aab69 | 2017 | |
fc70c2a0 AC |
2018 | /* If we are at the end of a call dummy now, pop the dummy frame |
2019 | too. */ | |
e8bcf01f AC |
2020 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2021 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2022 | |
c906108c | 2023 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2024 | if (from_tty) |
2025 | frame_command ("0", 1); | |
2026 | else | |
2027 | select_frame_command ("0", 0); | |
2028 | } | |
2029 | ||
033a42c2 | 2030 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2031 | is within the current stack frame. */ |
c906108c SS |
2032 | |
2033 | struct function_bounds | |
2034 | { | |
2035 | CORE_ADDR low, high; | |
2036 | }; | |
2037 | ||
2038 | static void | |
fba45db2 | 2039 | func_command (char *arg, int from_tty) |
c906108c | 2040 | { |
033a42c2 | 2041 | struct frame_info *frame; |
c906108c SS |
2042 | int found = 0; |
2043 | struct symtabs_and_lines sals; | |
2044 | int i; | |
2045 | int level = 1; | |
033a42c2 | 2046 | struct function_bounds *func_bounds = NULL; |
c906108c | 2047 | |
033a42c2 | 2048 | if (arg != NULL) |
c906108c SS |
2049 | return; |
2050 | ||
033a42c2 | 2051 | frame = parse_frame_specification ("0"); |
c906108c SS |
2052 | sals = decode_line_spec (arg, 1); |
2053 | func_bounds = (struct function_bounds *) xmalloc ( | |
2054 | sizeof (struct function_bounds) * sals.nelts); | |
2055 | for (i = 0; (i < sals.nelts && !found); i++) | |
2056 | { | |
033a42c2 MK |
2057 | if (sals.sals[i].pc == 0 |
2058 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2059 | &func_bounds[i].low, | |
2060 | &func_bounds[i].high) == 0) | |
c906108c | 2061 | { |
033a42c2 | 2062 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2063 | } |
2064 | } | |
2065 | ||
2066 | do | |
2067 | { | |
2068 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2069 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2070 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2071 | if (!found) |
2072 | { | |
2073 | level = 1; | |
033a42c2 | 2074 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2075 | } |
2076 | } | |
2077 | while (!found && level == 0); | |
2078 | ||
2079 | if (func_bounds) | |
b8c9b27d | 2080 | xfree (func_bounds); |
c906108c SS |
2081 | |
2082 | if (!found) | |
a3f17187 | 2083 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2084 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2085 | select_and_print_frame (frame); |
c906108c SS |
2086 | } |
2087 | ||
2088 | /* Gets the language of the current frame. */ | |
2089 | ||
2090 | enum language | |
fba45db2 | 2091 | get_frame_language (void) |
c906108c | 2092 | { |
206415a3 | 2093 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2094 | |
033a42c2 | 2095 | if (frame) |
c906108c | 2096 | { |
e3eebbd7 PA |
2097 | volatile struct gdb_exception ex; |
2098 | CORE_ADDR pc = 0; | |
2099 | struct symtab *s; | |
2100 | ||
7ae4c3a5 | 2101 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2102 | associated symtab. To retrieve this symtab, we use the frame |
2103 | PC. However we cannot use the frame PC as is, because it | |
2104 | usually points to the instruction following the "call", which | |
2105 | is sometimes the first instruction of another function. So | |
2106 | we rely on get_frame_address_in_block(), it provides us with | |
2107 | a PC that is guaranteed to be inside the frame's code | |
2108 | block. */ | |
033a42c2 | 2109 | |
e3eebbd7 PA |
2110 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2111 | { | |
2112 | pc = get_frame_address_in_block (frame); | |
2113 | } | |
2114 | if (ex.reason < 0) | |
2115 | { | |
2116 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2117 | throw_exception (ex); | |
2118 | } | |
2119 | else | |
2120 | { | |
2121 | s = find_pc_symtab (pc); | |
2122 | if (s != NULL) | |
2123 | return s->language; | |
2124 | } | |
c906108c | 2125 | } |
c906108c | 2126 | |
033a42c2 | 2127 | return language_unknown; |
c906108c SS |
2128 | } |
2129 | \f | |
033a42c2 MK |
2130 | |
2131 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2132 | void _initialize_stack (void); | |
2133 | ||
c906108c | 2134 | void |
fba45db2 | 2135 | _initialize_stack (void) |
c906108c | 2136 | { |
1bedd215 AC |
2137 | add_com ("return", class_stack, return_command, _("\ |
2138 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2139 | Control remains in the debugger, but when you continue\n\ |
2140 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2141 | If an argument is given, it is an expression for the value to return.")); |
2142 | ||
2143 | add_com ("up", class_stack, up_command, _("\ | |
2144 | Select and print stack frame that called this one.\n\ | |
2145 | An argument says how many frames up to go.")); | |
2146 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2147 | Same as the `up' command, but does not print anything.\n\ | |
2148 | This is useful in command scripts.")); | |
2149 | ||
2150 | add_com ("down", class_stack, down_command, _("\ | |
2151 | Select and print stack frame called by this one.\n\ | |
2152 | An argument says how many frames down to go.")); | |
c906108c SS |
2153 | add_com_alias ("do", "down", class_stack, 1); |
2154 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2155 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2156 | Same as the `down' command, but does not print anything.\n\ | |
2157 | This is useful in command scripts.")); | |
c906108c | 2158 | |
1bedd215 | 2159 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2160 | Select and print a stack frame.\nWith no argument, \ |
2161 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2162 | An argument specifies the frame to select.\n\ |
2163 | It can be a stack frame number or the address of the frame.\n\ | |
2164 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2165 | a command file or a user-defined command.")); |
c906108c SS |
2166 | |
2167 | add_com_alias ("f", "frame", class_stack, 1); | |
2168 | ||
2169 | if (xdb_commands) | |
2170 | { | |
c5aa993b | 2171 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2172 | _("Print the current stack frame.\n")); |
c906108c SS |
2173 | add_com_alias ("V", "frame", class_stack, 1); |
2174 | } | |
1bedd215 AC |
2175 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2176 | Select a stack frame without printing anything.\n\ | |
c906108c | 2177 | An argument specifies the frame to select.\n\ |
1bedd215 | 2178 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2179 | |
1bedd215 AC |
2180 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2181 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a MS |
2182 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
2183 | 'full' qualifier also prints the values of the local variables.\n")); | |
c906108c SS |
2184 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2185 | if (xdb_commands) | |
2186 | { | |
2187 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2188 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2189 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2190 | and the values of the local variables.\n\ |
2191 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2192 | Usage: T <count>\n")); |
c906108c SS |
2193 | } |
2194 | ||
2195 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2196 | add_info ("stack", backtrace_command, | |
1bedd215 | 2197 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2198 | add_info_alias ("s", "stack", 1); |
2199 | add_info ("frame", frame_info, | |
1bedd215 | 2200 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2201 | add_info_alias ("f", "frame", 1); |
2202 | add_info ("locals", locals_info, | |
1bedd215 | 2203 | _("Local variables of current stack frame.")); |
c906108c | 2204 | add_info ("args", args_info, |
1bedd215 | 2205 | _("Argument variables of current stack frame.")); |
c906108c | 2206 | if (xdb_commands) |
c5aa993b | 2207 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2208 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2209 | |
2210 | if (dbx_commands) | |
1bedd215 AC |
2211 | add_com ("func", class_stack, func_command, _("\ |
2212 | Select the stack frame that contains <func>.\n\ | |
2213 | Usage: func <name>\n")); | |
c906108c SS |
2214 | |
2215 | add_info ("catch", catch_info, | |
1bedd215 | 2216 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2217 | |
88408340 JB |
2218 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2219 | print_frame_arguments_choices, &print_frame_arguments, | |
2220 | _("Set printing of non-scalar frame arguments"), | |
2221 | _("Show printing of non-scalar frame arguments"), | |
2222 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2223 | ||
30c33a9f HZ |
2224 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2225 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2226 | Set whether to disassemble next source line or insn when execution stops."), |
2227 | _("\ | |
2228 | Show whether to disassemble next source line or insn when execution stops."), | |
2229 | _("\ | |
80a0ea0f EZ |
2230 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2231 | to displaying the source line itself. If the next source line cannot\n\ | |
2232 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2233 | will display disassembly of next instruction instead of showing the\n\ | |
2234 | source line.\n\ | |
2235 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2236 | cannot be displayed.\n\ | |
2237 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2238 | source line."), | |
30c33a9f HZ |
2239 | NULL, |
2240 | show_disassemble_next_line, | |
2241 | &setlist, &showlist); | |
a362e3d3 | 2242 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
c906108c | 2243 | } |