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 | |
2421fe6f | 60 | /* The possible choices of "set print frame-arguments", and the value |
88408340 JB |
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. */ |
79a45e25 | 122 | if (ui_out_is_mi_like_p (current_uiout)) |
311b5970 | 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 | { |
79a45e25 | 178 | struct ui_out *uiout = current_uiout; |
8d3b0994 | 179 | int first = 1; |
8d3b0994 | 180 | /* Offset of next stack argument beyond the one we have seen that is |
033a42c2 MK |
181 | at the highest offset, or -1 if we haven't come to a stack |
182 | argument yet. */ | |
8d3b0994 | 183 | long highest_offset = -1; |
8d3b0994 AC |
184 | /* Number of ints of arguments that we have printed so far. */ |
185 | int args_printed = 0; | |
186 | struct cleanup *old_chain, *list_chain; | |
187 | struct ui_stream *stb; | |
a6bac58e TT |
188 | /* True if we should print arguments, false otherwise. */ |
189 | int print_args = strcmp (print_frame_arguments, "none"); | |
190 | /* True in "summary" mode, false otherwise. */ | |
191 | int summary = !strcmp (print_frame_arguments, "scalars"); | |
8d3b0994 AC |
192 | |
193 | stb = ui_out_stream_new (uiout); | |
194 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
195 | ||
196 | if (func) | |
197 | { | |
033a42c2 MK |
198 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
199 | struct dict_iterator iter; | |
200 | struct symbol *sym; | |
201 | struct value *val; | |
8d3b0994 | 202 | |
de4f826b | 203 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
8d3b0994 AC |
204 | { |
205 | QUIT; | |
206 | ||
207 | /* Keep track of the highest stack argument offset seen, and | |
208 | skip over any kinds of symbols we don't care about. */ | |
209 | ||
2a2d4dc3 AS |
210 | if (!SYMBOL_IS_ARGUMENT (sym)) |
211 | continue; | |
212 | ||
8d3b0994 AC |
213 | switch (SYMBOL_CLASS (sym)) |
214 | { | |
215 | case LOC_ARG: | |
216 | case LOC_REF_ARG: | |
217 | { | |
218 | long current_offset = SYMBOL_VALUE (sym); | |
033a42c2 | 219 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
8d3b0994 AC |
220 | |
221 | /* Compute address of next argument by adding the size of | |
222 | this argument and rounding to an int boundary. */ | |
223 | current_offset = | |
224 | ((current_offset + arg_size + sizeof (int) - 1) | |
225 | & ~(sizeof (int) - 1)); | |
226 | ||
033a42c2 MK |
227 | /* If this is the highest offset seen yet, set |
228 | highest_offset. */ | |
8d3b0994 AC |
229 | if (highest_offset == -1 |
230 | || (current_offset > highest_offset)) | |
231 | highest_offset = current_offset; | |
232 | ||
033a42c2 MK |
233 | /* Add the number of ints we're about to print to |
234 | args_printed. */ | |
8d3b0994 AC |
235 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
236 | } | |
237 | ||
033a42c2 MK |
238 | /* We care about types of symbols, but don't need to |
239 | keep track of stack offsets in them. */ | |
2a2d4dc3 | 240 | case LOC_REGISTER: |
8d3b0994 | 241 | case LOC_REGPARM_ADDR: |
2a2d4dc3 AS |
242 | case LOC_COMPUTED: |
243 | case LOC_OPTIMIZED_OUT: | |
8d3b0994 | 244 | default: |
2a2d4dc3 | 245 | break; |
8d3b0994 AC |
246 | } |
247 | ||
248 | /* We have to look up the symbol because arguments can have | |
249 | two entries (one a parameter, one a local) and the one we | |
250 | want is the local, which lookup_symbol will find for us. | |
033a42c2 | 251 | This includes gcc1 (not gcc2) on SPARC when passing a |
8d3b0994 AC |
252 | small structure and gcc2 when the argument type is float |
253 | and it is passed as a double and converted to float by | |
254 | the prologue (in the latter case the type of the LOC_ARG | |
255 | symbol is double and the type of the LOC_LOCAL symbol is | |
256 | float). */ | |
033a42c2 MK |
257 | /* But if the parameter name is null, don't try it. Null |
258 | parameter names occur on the RS/6000, for traceback | |
259 | tables. FIXME, should we even print them? */ | |
8d3b0994 | 260 | |
3567439c | 261 | if (*SYMBOL_LINKAGE_NAME (sym)) |
8d3b0994 AC |
262 | { |
263 | struct symbol *nsym; | |
433759f7 | 264 | |
3567439c | 265 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 266 | b, VAR_DOMAIN, NULL); |
55765a25 | 267 | gdb_assert (nsym != NULL); |
2a2d4dc3 AS |
268 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
269 | && !SYMBOL_IS_ARGUMENT (nsym)) | |
8d3b0994 | 270 | { |
033a42c2 MK |
271 | /* There is a LOC_ARG/LOC_REGISTER pair. This means |
272 | that it was passed on the stack and loaded into a | |
273 | register, or passed in a register and stored in a | |
274 | stack slot. GDB 3.x used the LOC_ARG; GDB | |
275 | 4.0-4.11 used the LOC_REGISTER. | |
8d3b0994 AC |
276 | |
277 | Reasons for using the LOC_ARG: | |
033a42c2 MK |
278 | |
279 | (1) Because find_saved_registers may be slow for | |
280 | remote debugging. | |
281 | ||
282 | (2) Because registers are often re-used and stack | |
283 | slots rarely (never?) are. Therefore using | |
284 | the stack slot is much less likely to print | |
285 | garbage. | |
8d3b0994 AC |
286 | |
287 | Reasons why we might want to use the LOC_REGISTER: | |
033a42c2 MK |
288 | |
289 | (1) So that the backtrace prints the same value | |
290 | as "print foo". I see no compelling reason | |
291 | why this needs to be the case; having the | |
292 | backtrace print the value which was passed | |
293 | in, and "print foo" print the value as | |
294 | modified within the called function, makes | |
295 | perfect sense to me. | |
296 | ||
297 | Additional note: It might be nice if "info args" | |
298 | displayed both values. | |
299 | ||
300 | One more note: There is a case with SPARC | |
301 | structure passing where we need to use the | |
302 | LOC_REGISTER, but this is dealt with by creating | |
303 | a single LOC_REGPARM in symbol reading. */ | |
8d3b0994 AC |
304 | |
305 | /* Leave sym (the LOC_ARG) alone. */ | |
306 | ; | |
307 | } | |
308 | else | |
309 | sym = nsym; | |
310 | } | |
311 | ||
312 | /* Print the current arg. */ | |
313 | if (!first) | |
314 | ui_out_text (uiout, ", "); | |
315 | ui_out_wrap_hint (uiout, " "); | |
316 | ||
317 | annotate_arg_begin (); | |
318 | ||
319 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
320 | fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym), | |
033a42c2 MK |
321 | SYMBOL_LANGUAGE (sym), |
322 | DMGL_PARAMS | DMGL_ANSI); | |
8d3b0994 AC |
323 | ui_out_field_stream (uiout, "name", stb); |
324 | annotate_arg_name_end (); | |
325 | ui_out_text (uiout, "="); | |
326 | ||
a6bac58e | 327 | if (print_args) |
88408340 | 328 | { |
b99b5f66 JK |
329 | volatile struct gdb_exception except; |
330 | ||
331 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
332 | { | |
8afd712c JK |
333 | const struct language_defn *language; |
334 | struct value_print_options opts; | |
335 | ||
b99b5f66 JK |
336 | /* Avoid value_print because it will deref ref parameters. |
337 | We just want to print their addresses. Print ??? for | |
338 | args whose address we do not know. We pass 2 as | |
339 | "recurse" to val_print because our standard indentation | |
340 | here is 4 spaces, and val_print indents 2 for each | |
341 | recurse. */ | |
342 | val = read_var_value (sym, frame); | |
343 | ||
8afd712c JK |
344 | annotate_arg_value (value_type (val)); |
345 | ||
346 | /* Use the appropriate language to display our symbol, | |
347 | unless the user forced the language to a specific | |
348 | language. */ | |
349 | if (language_mode == language_mode_auto) | |
350 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
b99b5f66 | 351 | else |
8afd712c JK |
352 | language = current_language; |
353 | ||
354 | get_raw_print_options (&opts); | |
355 | opts.deref_ref = 0; | |
356 | opts.summary = summary; | |
357 | common_val_print (val, stb->stream, 2, &opts, language); | |
358 | ui_out_field_stream (uiout, "value", stb); | |
b99b5f66 JK |
359 | } |
360 | if (except.reason < 0) | |
361 | { | |
362 | fprintf_filtered (stb->stream, | |
363 | _("<error reading variable: %s>"), | |
364 | except.message); | |
88408340 | 365 | ui_out_field_stream (uiout, "value", stb); |
b99b5f66 | 366 | } |
88408340 JB |
367 | } |
368 | else | |
369 | ui_out_text (uiout, "..."); | |
8d3b0994 | 370 | |
8d3b0994 AC |
371 | |
372 | /* Invoke ui_out_tuple_end. */ | |
373 | do_cleanups (list_chain); | |
374 | ||
375 | annotate_arg_end (); | |
376 | ||
377 | first = 0; | |
378 | } | |
379 | } | |
380 | ||
381 | /* Don't print nameless args in situations where we don't know | |
382 | enough about the stack to find them. */ | |
383 | if (num != -1) | |
384 | { | |
385 | long start; | |
386 | ||
387 | if (highest_offset == -1) | |
7500260a | 388 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
389 | else |
390 | start = highest_offset; | |
391 | ||
033a42c2 | 392 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
393 | first, stream); |
394 | } | |
033a42c2 | 395 | |
8d3b0994 AC |
396 | do_cleanups (old_chain); |
397 | } | |
398 | ||
033a42c2 MK |
399 | /* Set the current source and line to the location given by frame |
400 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
401 | line is in the center of the next 'list'. */ | |
c789492a | 402 | |
7abfe014 | 403 | void |
033a42c2 | 404 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
405 | { |
406 | struct symtab_and_line sal; | |
407 | ||
033a42c2 | 408 | find_frame_sal (frame, &sal); |
c789492a FL |
409 | if (sal.symtab) |
410 | { | |
411 | if (center) | |
412 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
413 | set_current_source_symtab_and_line (&sal); | |
414 | } | |
415 | } | |
416 | ||
30c33a9f HZ |
417 | /* If ON, GDB will display disassembly of the next source line when |
418 | execution of the program being debugged stops. | |
481df73e HZ |
419 | If AUTO (which is the default), or there's no line info to determine |
420 | the source line of the next instruction, display disassembly of next | |
421 | instruction instead. */ | |
30c33a9f HZ |
422 | |
423 | static enum auto_boolean disassemble_next_line; | |
424 | ||
425 | static void | |
426 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
427 | struct cmd_list_element *c, | |
428 | const char *value) | |
429 | { | |
3e43a32a MS |
430 | fprintf_filtered (file, |
431 | _("Debugger's willingness to use " | |
432 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
433 | value); |
434 | } | |
435 | ||
30c33a9f HZ |
436 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
437 | because it will be broken by filter sometime. */ | |
438 | ||
439 | static void | |
13274fc3 UW |
440 | do_gdb_disassembly (struct gdbarch *gdbarch, |
441 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
442 | { |
443 | volatile struct gdb_exception exception; | |
30c33a9f | 444 | |
b1d288d3 | 445 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 446 | { |
79a45e25 PA |
447 | gdb_disassembly (gdbarch, current_uiout, 0, |
448 | DISASSEMBLY_RAW_INSN, how_many, | |
449 | low, high); | |
30c33a9f | 450 | } |
b1d288d3 JK |
451 | if (exception.reason < 0) |
452 | { | |
453 | /* If an exception was thrown while doing the disassembly, print | |
454 | the error message, to give the user a clue of what happened. */ | |
455 | exception_print (gdb_stderr, exception); | |
456 | } | |
30c33a9f HZ |
457 | } |
458 | ||
033a42c2 | 459 | /* Print information about frame FRAME. The output is format according |
65aa373f | 460 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
461 | PRINT_WHAT is: |
462 | ||
463 | SRC_LINE: Print only source line. | |
464 | LOCATION: Print only location. | |
465 | LOC_AND_SRC: Print location and source line. | |
466 | ||
467 | Used in "where" output, and to emit breakpoint or step | |
468 | messages. */ | |
c906108c | 469 | |
7789c6f5 | 470 | void |
033a42c2 | 471 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 472 | enum print_what print_what, int print_args) |
c906108c | 473 | { |
5af949e3 | 474 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 475 | struct symtab_and_line sal; |
c5394b80 JM |
476 | int source_print; |
477 | int location_print; | |
79a45e25 | 478 | struct ui_out *uiout = current_uiout; |
c906108c | 479 | |
033a42c2 | 480 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
481 | || get_frame_type (frame) == SIGTRAMP_FRAME |
482 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 483 | { |
075559bc AC |
484 | struct cleanup *uiout_cleanup |
485 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 486 | |
033a42c2 | 487 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 488 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 489 | |
c906108c | 490 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 491 | to list for this frame. */ |
0faf0076 | 492 | if (print_level) |
52c6a6ac JJ |
493 | { |
494 | ui_out_text (uiout, "#"); | |
0faf0076 | 495 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 496 | frame_relative_level (frame)); |
52c6a6ac | 497 | } |
075559bc | 498 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 499 | { |
075559bc | 500 | annotate_frame_address (); |
5af949e3 UW |
501 | ui_out_field_core_addr (uiout, "addr", |
502 | gdbarch, get_frame_pc (frame)); | |
075559bc | 503 | annotate_frame_address_end (); |
52c6a6ac | 504 | } |
6a3fe0a4 | 505 | |
033a42c2 | 506 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
507 | { |
508 | annotate_function_call (); | |
509 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
510 | } | |
033a42c2 | 511 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
512 | { |
513 | annotate_signal_handler_caller (); | |
514 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
515 | } | |
36f15f55 UW |
516 | else if (get_frame_type (frame) == ARCH_FRAME) |
517 | { | |
518 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
519 | } | |
075559bc | 520 | ui_out_text (uiout, "\n"); |
c906108c | 521 | annotate_frame_end (); |
075559bc AC |
522 | |
523 | do_cleanups (uiout_cleanup); | |
c906108c SS |
524 | return; |
525 | } | |
526 | ||
033a42c2 MK |
527 | /* If FRAME is not the innermost frame, that normally means that |
528 | FRAME->pc points to *after* the call instruction, and we want to | |
529 | get the line containing the call, never the next line. But if | |
530 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
531 | next frame was not entered as the result of a call, and we want | |
532 | to get the line containing FRAME->pc. */ | |
533 | find_frame_sal (frame, &sal); | |
c906108c | 534 | |
0faf0076 AC |
535 | location_print = (print_what == LOCATION |
536 | || print_what == LOC_AND_ADDRESS | |
537 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
538 | |
539 | if (location_print || !sal.symtab) | |
033a42c2 | 540 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 541 | |
0faf0076 | 542 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 543 | |
30c33a9f HZ |
544 | /* If disassemble-next-line is set to auto or on and doesn't have |
545 | the line debug messages for $pc, output the next instruction. */ | |
546 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
547 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
548 | && source_print && !sal.symtab) | |
13274fc3 UW |
549 | do_gdb_disassembly (get_frame_arch (frame), 1, |
550 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 551 | |
c5394b80 JM |
552 | if (source_print && sal.symtab) |
553 | { | |
554 | int done = 0; | |
0faf0076 | 555 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 556 | && frame_show_address (frame, sal)); |
c5394b80 JM |
557 | |
558 | if (annotation_level) | |
559 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 560 | get_frame_pc (frame)); |
c5394b80 JM |
561 | if (!done) |
562 | { | |
9a4105ab | 563 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
564 | deprecated_print_frame_info_listing_hook (sal.symtab, |
565 | sal.line, | |
566 | sal.line + 1, 0); | |
ba4bbdcb | 567 | else |
c5394b80 | 568 | { |
79a45b7d | 569 | struct value_print_options opts; |
433759f7 | 570 | |
79a45b7d | 571 | get_user_print_options (&opts); |
ba4bbdcb | 572 | /* We used to do this earlier, but that is clearly |
c378eb4e | 573 | wrong. This function is used by many different |
ba4bbdcb KS |
574 | parts of gdb, including normal_stop in infrun.c, |
575 | which uses this to print out the current PC | |
576 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
577 | line. Only the command line really wants this |
578 | behavior. Other UIs probably would like the | |
cbd3c883 | 579 | ability to decide for themselves if it is desired. */ |
79a45b7d | 580 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 581 | { |
5af949e3 UW |
582 | ui_out_field_core_addr (uiout, "addr", |
583 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 584 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
585 | } |
586 | ||
587 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 588 | } |
c5394b80 | 589 | } |
30c33a9f HZ |
590 | |
591 | /* If disassemble-next-line is set to on and there is line debug | |
592 | messages, output assembly codes for next line. */ | |
593 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 594 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
595 | } |
596 | ||
0faf0076 | 597 | if (print_what != LOCATION) |
e3eebbd7 PA |
598 | { |
599 | CORE_ADDR pc; | |
600 | ||
601 | if (get_frame_pc_if_available (frame, &pc)) | |
602 | set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line); | |
603 | else | |
604 | set_default_breakpoint (0, 0, 0, 0, 0); | |
605 | } | |
c5394b80 JM |
606 | |
607 | annotate_frame_end (); | |
608 | ||
609 | gdb_flush (gdb_stdout); | |
610 | } | |
611 | ||
e9e07ba6 JK |
612 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
613 | corresponding to FRAME. */ | |
614 | ||
f8f6f20b TJB |
615 | void |
616 | find_frame_funname (struct frame_info *frame, char **funname, | |
e9e07ba6 | 617 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
618 | { |
619 | struct symbol *func; | |
8b93c638 | 620 | |
f8f6f20b TJB |
621 | *funname = NULL; |
622 | *funlang = language_unknown; | |
e9e07ba6 JK |
623 | if (funcp) |
624 | *funcp = NULL; | |
c5394b80 | 625 | |
edb3359d | 626 | func = get_frame_function (frame); |
c906108c SS |
627 | if (func) |
628 | { | |
629 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
630 | function (when we are in the first function in a file which |
631 | is compiled without debugging symbols, the previous function | |
632 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
633 | that is supposed to tell us where the file with debugging |
634 | symbols ends has been truncated by ar because it is longer | |
635 | than 15 characters). This also occurs if the user uses asm() | |
636 | to create a function but not stabs for it (in a file compiled | |
637 | with -g). | |
c5aa993b JM |
638 | |
639 | So look in the minimal symbol tables as well, and if it comes | |
640 | up with a larger address for the function use that instead. | |
033a42c2 MK |
641 | I don't think this can ever cause any problems; there |
642 | shouldn't be any minimal symbols in the middle of a function; | |
643 | if this is ever changed many parts of GDB will need to be | |
644 | changed (and we'll create a find_pc_minimal_function or some | |
645 | such). */ | |
646 | ||
edb3359d DJ |
647 | struct minimal_symbol *msymbol = NULL; |
648 | ||
649 | /* Don't attempt to do this for inlined functions, which do not | |
650 | have a corresponding minimal symbol. */ | |
651 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
652 | msymbol | |
653 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 654 | |
c906108c | 655 | if (msymbol != NULL |
c5aa993b | 656 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
657 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
658 | { | |
c906108c SS |
659 | /* We also don't know anything about the function besides |
660 | its address and name. */ | |
661 | func = 0; | |
f8f6f20b TJB |
662 | *funname = SYMBOL_PRINT_NAME (msymbol); |
663 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
664 | } |
665 | else | |
666 | { | |
f8f6f20b TJB |
667 | *funname = SYMBOL_PRINT_NAME (func); |
668 | *funlang = SYMBOL_LANGUAGE (func); | |
e9e07ba6 JK |
669 | if (funcp) |
670 | *funcp = func; | |
f8f6f20b | 671 | if (*funlang == language_cplus) |
c5aa993b | 672 | { |
033a42c2 MK |
673 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
674 | to display the demangled name that we already have | |
675 | stored in the symbol table, but we stored a version | |
676 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 677 | display parameters. So remove the parameters. */ |
f8f6f20b | 678 | char *func_only = cp_remove_params (*funname); |
433759f7 | 679 | |
3567439c DJ |
680 | if (func_only) |
681 | { | |
f8f6f20b | 682 | *funname = func_only; |
3567439c DJ |
683 | make_cleanup (xfree, func_only); |
684 | } | |
c5aa993b | 685 | } |
c906108c SS |
686 | } |
687 | } | |
688 | else | |
689 | { | |
e3eebbd7 PA |
690 | struct minimal_symbol *msymbol; |
691 | CORE_ADDR pc; | |
033a42c2 | 692 | |
e3eebbd7 PA |
693 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
694 | return; | |
695 | ||
696 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
c906108c SS |
697 | if (msymbol != NULL) |
698 | { | |
f8f6f20b TJB |
699 | *funname = SYMBOL_PRINT_NAME (msymbol); |
700 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
701 | } |
702 | } | |
f8f6f20b TJB |
703 | } |
704 | ||
705 | static void | |
706 | print_frame (struct frame_info *frame, int print_level, | |
707 | enum print_what print_what, int print_args, | |
708 | struct symtab_and_line sal) | |
709 | { | |
5af949e3 | 710 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 711 | struct ui_out *uiout = current_uiout; |
f8f6f20b TJB |
712 | char *funname = NULL; |
713 | enum language funlang = language_unknown; | |
714 | struct ui_stream *stb; | |
715 | struct cleanup *old_chain, *list_chain; | |
716 | struct value_print_options opts; | |
e9e07ba6 | 717 | struct symbol *func; |
e3eebbd7 PA |
718 | CORE_ADDR pc = 0; |
719 | int pc_p; | |
720 | ||
721 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b TJB |
722 | |
723 | stb = ui_out_stream_new (uiout); | |
724 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
725 | ||
e9e07ba6 | 726 | find_frame_funname (frame, &funname, &funlang, &func); |
c906108c | 727 | |
033a42c2 | 728 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 729 | gdbarch, pc); |
c5394b80 | 730 | |
666547aa | 731 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 732 | |
0faf0076 | 733 | if (print_level) |
8b93c638 | 734 | { |
8b93c638 | 735 | ui_out_text (uiout, "#"); |
0faf0076 | 736 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 737 | frame_relative_level (frame)); |
8b93c638 | 738 | } |
79a45b7d TT |
739 | get_user_print_options (&opts); |
740 | if (opts.addressprint) | |
e3eebbd7 PA |
741 | if (!sal.symtab |
742 | || frame_show_address (frame, sal) | |
0faf0076 | 743 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
744 | { |
745 | annotate_frame_address (); | |
e3eebbd7 PA |
746 | if (pc_p) |
747 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
748 | else | |
749 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
750 | annotate_frame_address_end (); |
751 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
752 | } |
753 | annotate_frame_function_name (); | |
033a42c2 MK |
754 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
755 | funlang, DMGL_ANSI); | |
8b93c638 JM |
756 | ui_out_field_stream (uiout, "func", stb); |
757 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
758 | annotate_frame_args (); |
759 | ||
8b93c638 | 760 | ui_out_text (uiout, " ("); |
0faf0076 | 761 | if (print_args) |
c906108c | 762 | { |
311b5970 JK |
763 | struct gdbarch *gdbarch = get_frame_arch (frame); |
764 | int numargs; | |
d493eb33 | 765 | struct cleanup *args_list_chain; |
311b5970 | 766 | volatile struct gdb_exception e; |
433759f7 | 767 | |
311b5970 JK |
768 | if (gdbarch_frame_num_args_p (gdbarch)) |
769 | { | |
770 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
771 | gdb_assert (numargs >= 0); | |
772 | } | |
773 | else | |
774 | numargs = -1; | |
775 | ||
68c81b54 | 776 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
777 | TRY_CATCH (e, RETURN_MASK_ERROR) |
778 | { | |
779 | print_frame_args (func, frame, numargs, gdb_stdout); | |
780 | } | |
c378eb4e | 781 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 782 | will have " that will not be properly escaped. */ |
666547aa | 783 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 784 | do_cleanups (args_list_chain); |
c5394b80 JM |
785 | QUIT; |
786 | } | |
8b93c638 | 787 | ui_out_text (uiout, ")"); |
c5394b80 JM |
788 | if (sal.symtab && sal.symtab->filename) |
789 | { | |
790 | annotate_frame_source_begin (); | |
8b93c638 JM |
791 | ui_out_wrap_hint (uiout, " "); |
792 | ui_out_text (uiout, " at "); | |
793 | annotate_frame_source_file (); | |
794 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
795 | if (ui_out_is_mi_like_p (uiout)) |
796 | { | |
797 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 798 | |
76ff342d DJ |
799 | if (fullname != NULL) |
800 | ui_out_field_string (uiout, "fullname", fullname); | |
801 | } | |
8b93c638 JM |
802 | annotate_frame_source_file_end (); |
803 | ui_out_text (uiout, ":"); | |
804 | annotate_frame_source_line (); | |
805 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
806 | annotate_frame_source_end (); |
807 | } | |
c906108c | 808 | |
e3eebbd7 | 809 | if (pc_p && (!funname || (!sal.symtab || !sal.symtab->filename))) |
c906108c | 810 | { |
a77053c2 | 811 | #ifdef PC_SOLIB |
033a42c2 | 812 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 813 | #else |
6c95b8df PA |
814 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
815 | get_frame_pc (frame)); | |
a77053c2 | 816 | #endif |
c5394b80 | 817 | if (lib) |
c906108c | 818 | { |
c5394b80 | 819 | annotate_frame_where (); |
8b93c638 JM |
820 | ui_out_wrap_hint (uiout, " "); |
821 | ui_out_text (uiout, " from "); | |
822 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 823 | } |
c906108c | 824 | } |
e514a9d6 | 825 | |
666547aa | 826 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 827 | do_cleanups (list_chain); |
8b93c638 JM |
828 | ui_out_text (uiout, "\n"); |
829 | do_cleanups (old_chain); | |
c906108c SS |
830 | } |
831 | \f | |
c5aa993b | 832 | |
033a42c2 MK |
833 | /* Read a frame specification in whatever the appropriate format is |
834 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
835 | specification is in any way invalid (so this function never returns | |
836 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
837 | the default selected frame was used. */ | |
c906108c | 838 | |
1c8831c5 AC |
839 | static struct frame_info * |
840 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
841 | int *selected_frame_p) | |
c906108c | 842 | { |
1c8831c5 AC |
843 | int numargs; |
844 | struct value *args[4]; | |
845 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 846 | |
1c8831c5 AC |
847 | if (frame_exp == NULL) |
848 | numargs = 0; | |
849 | else | |
c906108c | 850 | { |
1c8831c5 AC |
851 | numargs = 0; |
852 | while (1) | |
c906108c | 853 | { |
1c8831c5 AC |
854 | char *addr_string; |
855 | struct cleanup *cleanup; | |
856 | const char *p; | |
857 | ||
858 | /* Skip leading white space, bail of EOL. */ | |
859 | while (isspace (*frame_exp)) | |
860 | frame_exp++; | |
861 | if (!*frame_exp) | |
862 | break; | |
c906108c | 863 | |
1c8831c5 AC |
864 | /* Parse the argument, extract it, save it. */ |
865 | for (p = frame_exp; | |
866 | *p && !isspace (*p); | |
867 | p++); | |
868 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 869 | frame_exp = p; |
1c8831c5 AC |
870 | cleanup = make_cleanup (xfree, addr_string); |
871 | ||
872 | /* NOTE: Parse and evaluate expression, but do not use | |
873 | functions such as parse_and_eval_long or | |
874 | parse_and_eval_address to also extract the value. | |
875 | Instead value_as_long and value_as_address are used. | |
876 | This avoids problems with expressions that contain | |
877 | side-effects. */ | |
878 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 879 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
880 | args[numargs++] = parse_and_eval (addr_string); |
881 | ||
882 | do_cleanups (cleanup); | |
c906108c SS |
883 | } |
884 | } | |
885 | ||
1c8831c5 AC |
886 | /* If no args, default to the selected frame. */ |
887 | if (numargs == 0) | |
c906108c | 888 | { |
1c8831c5 AC |
889 | if (selected_frame_p != NULL) |
890 | (*selected_frame_p) = 1; | |
891 | return get_selected_frame (message); | |
892 | } | |
c906108c | 893 | |
1c8831c5 AC |
894 | /* None of the remaining use the selected frame. */ |
895 | if (selected_frame_p != NULL) | |
98f276a0 | 896 | (*selected_frame_p) = 0; |
c906108c | 897 | |
1c8831c5 AC |
898 | /* Assume the single arg[0] is an integer, and try using that to |
899 | select a frame relative to current. */ | |
900 | if (numargs == 1) | |
901 | { | |
902 | struct frame_info *fid; | |
903 | int level = value_as_long (args[0]); | |
433759f7 | 904 | |
1c8831c5 AC |
905 | fid = find_relative_frame (get_current_frame (), &level); |
906 | if (level == 0) | |
c378eb4e | 907 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
908 | return fid; |
909 | } | |
c906108c | 910 | |
1c8831c5 AC |
911 | /* Convert each value into a corresponding address. */ |
912 | { | |
913 | int i; | |
433759f7 | 914 | |
1c8831c5 | 915 | for (i = 0; i < numargs; i++) |
1e275f79 | 916 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 917 | } |
c5aa993b | 918 | |
1c8831c5 AC |
919 | /* Assume that the single arg[0] is an address, use that to identify |
920 | a frame with a matching ID. Should this also accept stack/pc or | |
921 | stack/pc/special. */ | |
922 | if (numargs == 1) | |
923 | { | |
924 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
925 | struct frame_info *fid; | |
926 | ||
1c8831c5 AC |
927 | /* If (s)he specifies the frame with an address, he deserves |
928 | what (s)he gets. Still, give the highest one that matches. | |
929 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
930 | know). */ | |
931 | for (fid = get_current_frame (); | |
932 | fid != NULL; | |
933 | fid = get_prev_frame (fid)) | |
934 | { | |
935 | if (frame_id_eq (id, get_frame_id (fid))) | |
936 | { | |
c7ce8faa DJ |
937 | struct frame_info *prev_frame; |
938 | ||
939 | while (1) | |
940 | { | |
941 | prev_frame = get_prev_frame (fid); | |
942 | if (!prev_frame | |
943 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
944 | break; | |
945 | fid = prev_frame; | |
946 | } | |
1c8831c5 AC |
947 | return fid; |
948 | } | |
949 | } | |
c906108c SS |
950 | } |
951 | ||
1c8831c5 AC |
952 | /* We couldn't identify the frame as an existing frame, but |
953 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
954 | if (numargs == 1) |
955 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
956 | else if (numargs == 2) |
957 | return create_new_frame (addrs[0], addrs[1]); | |
958 | else | |
8a3fe4f8 | 959 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
960 | } |
961 | ||
9c833c82 | 962 | static struct frame_info * |
1c8831c5 AC |
963 | parse_frame_specification (char *frame_exp) |
964 | { | |
965 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
966 | } |
967 | ||
033a42c2 MK |
968 | /* Print verbosely the selected frame or the frame at address |
969 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
970 | |
971 | static void | |
fba45db2 | 972 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
973 | { |
974 | struct frame_info *fi; | |
975 | struct symtab_and_line sal; | |
976 | struct symbol *func; | |
977 | struct symtab *s; | |
978 | struct frame_info *calling_frame_info; | |
167e4384 | 979 | int numregs; |
c906108c SS |
980 | char *funname = 0; |
981 | enum language funlang = language_unknown; | |
82de1e5b | 982 | const char *pc_regname; |
1c8831c5 | 983 | int selected_frame_p; |
7500260a | 984 | struct gdbarch *gdbarch; |
3567439c | 985 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
986 | CORE_ADDR frame_pc; |
987 | int frame_pc_p; | |
988 | CORE_ADDR caller_pc; | |
c906108c | 989 | |
1c8831c5 | 990 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 991 | gdbarch = get_frame_arch (fi); |
c906108c | 992 | |
82de1e5b AC |
993 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
994 | is not a good name. */ | |
12368003 | 995 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 996 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
997 | easily not match that of the internal value returned by |
998 | get_frame_pc(). */ | |
12368003 | 999 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 1000 | else |
3e8c568d | 1001 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
1002 | architectures will often have a hardware register called "pc", |
1003 | and that register's value, again, can easily not match | |
1004 | get_frame_pc(). */ | |
1005 | pc_regname = "pc"; | |
1006 | ||
008f8f2e | 1007 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1008 | find_frame_sal (fi, &sal); |
c906108c | 1009 | func = get_frame_function (fi); |
008f8f2e | 1010 | s = sal.symtab; |
c906108c SS |
1011 | if (func) |
1012 | { | |
3567439c | 1013 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1014 | funlang = SYMBOL_LANGUAGE (func); |
1015 | if (funlang == language_cplus) | |
1016 | { | |
3567439c DJ |
1017 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1018 | to display the demangled name that we already have | |
1019 | stored in the symbol table, but we stored a version | |
1020 | with DMGL_PARAMS turned on, and here we don't want to | |
1021 | display parameters. So remove the parameters. */ | |
1022 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1023 | |
3567439c DJ |
1024 | if (func_only) |
1025 | { | |
1026 | funname = func_only; | |
1027 | make_cleanup (xfree, func_only); | |
1028 | } | |
c5aa993b | 1029 | } |
c906108c | 1030 | } |
008f8f2e | 1031 | else if (frame_pc_p) |
c906108c | 1032 | { |
033a42c2 MK |
1033 | struct minimal_symbol *msymbol; |
1034 | ||
008f8f2e | 1035 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
c906108c SS |
1036 | if (msymbol != NULL) |
1037 | { | |
3567439c | 1038 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1039 | funlang = SYMBOL_LANGUAGE (msymbol); |
1040 | } | |
1041 | } | |
1042 | calling_frame_info = get_prev_frame (fi); | |
1043 | ||
1c8831c5 | 1044 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1045 | { |
a3f17187 | 1046 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1047 | frame_relative_level (fi)); |
c906108c SS |
1048 | } |
1049 | else | |
1050 | { | |
a3f17187 | 1051 | printf_filtered (_("Stack frame at ")); |
c906108c | 1052 | } |
5af949e3 | 1053 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1054 | printf_filtered (":\n"); |
82de1e5b | 1055 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1056 | if (frame_pc_p) |
1057 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1058 | else | |
1059 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1060 | |
1061 | wrap_here (" "); | |
1062 | if (funname) | |
1063 | { | |
1064 | printf_filtered (" in "); | |
1065 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1066 | DMGL_ANSI | DMGL_PARAMS); | |
1067 | } | |
1068 | wrap_here (" "); | |
1069 | if (sal.symtab) | |
1070 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1071 | puts_filtered ("; "); | |
1072 | wrap_here (" "); | |
82de1e5b | 1073 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1074 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1075 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1076 | else | |
1077 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1078 | printf_filtered ("\n"); |
1079 | ||
55feb689 DJ |
1080 | if (calling_frame_info == NULL) |
1081 | { | |
1082 | enum unwind_stop_reason reason; | |
1083 | ||
1084 | reason = get_frame_unwind_stop_reason (fi); | |
1085 | if (reason != UNWIND_NO_REASON) | |
1086 | printf_filtered (_(" Outermost frame: %s\n"), | |
1087 | frame_stop_reason_string (reason)); | |
1088 | } | |
111c6489 JK |
1089 | else if (get_frame_type (fi) == TAILCALL_FRAME) |
1090 | puts_filtered (" tail call frame"); | |
edb3359d DJ |
1091 | else if (get_frame_type (fi) == INLINE_FRAME) |
1092 | printf_filtered (" inlined into frame %d", | |
1093 | frame_relative_level (get_prev_frame (fi))); | |
1094 | else | |
c906108c SS |
1095 | { |
1096 | printf_filtered (" called by frame at "); | |
5af949e3 | 1097 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1098 | gdb_stdout); |
c906108c | 1099 | } |
75e3c1f9 | 1100 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1101 | puts_filtered (","); |
1102 | wrap_here (" "); | |
75e3c1f9 | 1103 | if (get_next_frame (fi)) |
c906108c SS |
1104 | { |
1105 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1106 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1107 | gdb_stdout); |
c906108c | 1108 | } |
75e3c1f9 | 1109 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1110 | puts_filtered ("\n"); |
55feb689 | 1111 | |
c906108c | 1112 | if (s) |
1058bca7 AC |
1113 | printf_filtered (" source language %s.\n", |
1114 | language_str (s->language)); | |
c906108c | 1115 | |
c906108c SS |
1116 | { |
1117 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1118 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1119 | /* Number of args for this frame, or -1 if unknown. */ |
1120 | int numargs; | |
1121 | ||
1122 | if (arg_list == 0) | |
1123 | printf_filtered (" Arglist at unknown address.\n"); | |
1124 | else | |
1125 | { | |
1126 | printf_filtered (" Arglist at "); | |
5af949e3 | 1127 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1128 | printf_filtered (","); |
1129 | ||
7500260a | 1130 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1131 | { |
1132 | numargs = -1; | |
1133 | puts_filtered (" args: "); | |
1134 | } | |
c906108c | 1135 | else |
983a287a | 1136 | { |
7500260a | 1137 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1138 | gdb_assert (numargs >= 0); |
1139 | if (numargs == 0) | |
1140 | puts_filtered (" no args."); | |
1141 | else if (numargs == 1) | |
1142 | puts_filtered (" 1 arg: "); | |
1143 | else | |
1144 | printf_filtered (" %d args: ", numargs); | |
1145 | } | |
c906108c SS |
1146 | print_frame_args (func, fi, numargs, gdb_stdout); |
1147 | puts_filtered ("\n"); | |
1148 | } | |
1149 | } | |
1150 | { | |
1151 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1152 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1153 | |
1154 | if (arg_list == 0) | |
1155 | printf_filtered (" Locals at unknown address,"); | |
1156 | else | |
1157 | { | |
1158 | printf_filtered (" Locals at "); | |
5af949e3 | 1159 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1160 | printf_filtered (","); |
1161 | } | |
1162 | } | |
1163 | ||
4f460812 AC |
1164 | /* Print as much information as possible on the location of all the |
1165 | registers. */ | |
1166 | { | |
1167 | enum lval_type lval; | |
1168 | int optimized; | |
0fdb4f18 | 1169 | int unavailable; |
4f460812 AC |
1170 | CORE_ADDR addr; |
1171 | int realnum; | |
1172 | int count; | |
1173 | int i; | |
1174 | int need_nl = 1; | |
1175 | ||
1176 | /* The sp is special; what's displayed isn't the save address, but | |
1177 | the value of the previous frame's sp. This is a legacy thing, | |
1178 | at one stage the frame cached the previous frame's SP instead | |
1179 | of its address, hence it was easiest to just display the cached | |
1180 | value. */ | |
7500260a | 1181 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1182 | { |
1183 | /* Find out the location of the saved stack pointer with out | |
1184 | actually evaluating it. */ | |
7500260a | 1185 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1186 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1187 | &realnum, NULL); |
0fdb4f18 | 1188 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1189 | { |
e17a4113 UW |
1190 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1191 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1192 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1193 | CORE_ADDR sp; |
433759f7 | 1194 | |
7500260a | 1195 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1196 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1197 | &realnum, value); |
af1342ab AC |
1198 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1199 | stack pointer was packed as an unsigned integer. That | |
1200 | may or may not be valid. */ | |
e17a4113 | 1201 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1202 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1203 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1204 | printf_filtered ("\n"); |
1205 | need_nl = 0; | |
c906108c | 1206 | } |
0fdb4f18 | 1207 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1208 | { |
1209 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1210 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1211 | printf_filtered ("\n"); |
1212 | need_nl = 0; | |
1213 | } | |
0fdb4f18 | 1214 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1215 | { |
1216 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1217 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1218 | need_nl = 0; |
1219 | } | |
1220 | /* else keep quiet. */ | |
1221 | } | |
1222 | ||
1223 | count = 0; | |
7500260a UW |
1224 | numregs = gdbarch_num_regs (gdbarch) |
1225 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1226 | for (i = 0; i < numregs; i++) |
7500260a UW |
1227 | if (i != gdbarch_sp_regnum (gdbarch) |
1228 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1229 | { |
1230 | /* Find out the location of the saved register without | |
1231 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1232 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1233 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1234 | /* For moment, only display registers that were saved on the |
1235 | stack. */ | |
0fdb4f18 | 1236 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1237 | { |
1238 | if (count == 0) | |
1239 | puts_filtered (" Saved registers:\n "); | |
1240 | else | |
1241 | puts_filtered (","); | |
1242 | wrap_here (" "); | |
c9f4d572 | 1243 | printf_filtered (" %s at ", |
7500260a | 1244 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1245 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1246 | count++; |
1247 | } | |
1248 | } | |
1249 | if (count || need_nl) | |
c906108c | 1250 | puts_filtered ("\n"); |
4f460812 | 1251 | } |
3567439c DJ |
1252 | |
1253 | do_cleanups (back_to); | |
c906108c SS |
1254 | } |
1255 | ||
033a42c2 MK |
1256 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1257 | frames. */ | |
c906108c SS |
1258 | |
1259 | static void | |
fba45db2 | 1260 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1261 | { |
1262 | struct frame_info *fi; | |
52f0bd74 AC |
1263 | int count; |
1264 | int i; | |
1265 | struct frame_info *trailing; | |
1266 | int trailing_level; | |
c906108c SS |
1267 | |
1268 | if (!target_has_stack) | |
8a3fe4f8 | 1269 | error (_("No stack.")); |
c906108c | 1270 | |
033a42c2 MK |
1271 | /* The following code must do two things. First, it must set the |
1272 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1273 | printing. Second, it must set the variable count to the number |
1274 | of frames which we should print, or -1 if all of them. */ | |
1275 | trailing = get_current_frame (); | |
d082b2bb | 1276 | |
c906108c SS |
1277 | trailing_level = 0; |
1278 | if (count_exp) | |
1279 | { | |
bb518678 | 1280 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1281 | if (count < 0) |
1282 | { | |
1283 | struct frame_info *current; | |
1284 | ||
1285 | count = -count; | |
1286 | ||
1287 | current = trailing; | |
1288 | while (current && count--) | |
1289 | { | |
1290 | QUIT; | |
1291 | current = get_prev_frame (current); | |
1292 | } | |
c5aa993b | 1293 | |
033a42c2 MK |
1294 | /* Will stop when CURRENT reaches the top of the stack. |
1295 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1296 | while (current) |
1297 | { | |
1298 | QUIT; | |
1299 | trailing = get_prev_frame (trailing); | |
1300 | current = get_prev_frame (current); | |
1301 | trailing_level++; | |
1302 | } | |
c5aa993b | 1303 | |
c906108c SS |
1304 | count = -1; |
1305 | } | |
1306 | } | |
1307 | else | |
1308 | count = -1; | |
1309 | ||
1310 | if (info_verbose) | |
1311 | { | |
033a42c2 MK |
1312 | /* Read in symbols for all of the frames. Need to do this in a |
1313 | separate pass so that "Reading in symbols for xxx" messages | |
1314 | don't screw up the appearance of the backtrace. Also if | |
1315 | people have strong opinions against reading symbols for | |
c5aa993b | 1316 | backtrace this may have to be an option. */ |
c906108c | 1317 | i = count; |
033a42c2 | 1318 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1319 | { |
ccefe4c4 | 1320 | CORE_ADDR pc; |
433759f7 | 1321 | |
c906108c | 1322 | QUIT; |
ccefe4c4 TT |
1323 | pc = get_frame_address_in_block (fi); |
1324 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1325 | } |
1326 | } | |
1327 | ||
033a42c2 | 1328 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1329 | { |
1330 | QUIT; | |
1331 | ||
1332 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1333 | means further attempts to backtrace would fail (on the other |
1334 | hand, perhaps the code does or could be fixed to make sure | |
1335 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1336 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1337 | if (show_locals) |
c5aa993b | 1338 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1339 | |
1340 | /* Save the last frame to check for error conditions. */ | |
1341 | trailing = fi; | |
c906108c SS |
1342 | } |
1343 | ||
1344 | /* If we've stopped before the end, mention that. */ | |
1345 | if (fi && from_tty) | |
a3f17187 | 1346 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1347 | |
1348 | /* If we've run out of frames, and the reason appears to be an error | |
1349 | condition, print it. */ | |
1350 | if (fi == NULL && trailing != NULL) | |
1351 | { | |
1352 | enum unwind_stop_reason reason; | |
1353 | ||
1354 | reason = get_frame_unwind_stop_reason (trailing); | |
1355 | if (reason > UNWIND_FIRST_ERROR) | |
1356 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1357 | frame_stop_reason_string (reason)); | |
1358 | } | |
c906108c SS |
1359 | } |
1360 | ||
1361 | static void | |
fba45db2 | 1362 | backtrace_command (char *arg, int from_tty) |
c906108c | 1363 | { |
5fe41fbf | 1364 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
033a42c2 | 1365 | int fulltrace_arg = -1, arglen = 0, argc = 0; |
c906108c | 1366 | |
033a42c2 | 1367 | if (arg) |
c906108c | 1368 | { |
033a42c2 | 1369 | char **argv; |
c906108c SS |
1370 | int i; |
1371 | ||
d1a41061 | 1372 | argv = gdb_buildargv (arg); |
5fe41fbf | 1373 | make_cleanup_freeargv (argv); |
c906108c | 1374 | argc = 0; |
033a42c2 | 1375 | for (i = 0; argv[i]; i++) |
c5aa993b | 1376 | { |
745b8ca0 | 1377 | unsigned int j; |
c5aa993b | 1378 | |
033a42c2 | 1379 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1380 | argv[i][j] = tolower (argv[i][j]); |
1381 | ||
033a42c2 MK |
1382 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1383 | fulltrace_arg = argc; | |
c5aa993b JM |
1384 | else |
1385 | { | |
033a42c2 | 1386 | arglen += strlen (argv[i]); |
c5aa993b | 1387 | argc++; |
c5aa993b JM |
1388 | } |
1389 | } | |
033a42c2 MK |
1390 | arglen += argc; |
1391 | if (fulltrace_arg >= 0) | |
c5aa993b | 1392 | { |
033a42c2 | 1393 | if (arglen > 0) |
c5aa993b | 1394 | { |
033a42c2 | 1395 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1396 | make_cleanup (xfree, arg); |
1397 | arg[0] = 0; | |
033a42c2 | 1398 | for (i = 0; i < (argc + 1); i++) |
c5aa993b | 1399 | { |
033a42c2 | 1400 | if (i != fulltrace_arg) |
c5aa993b | 1401 | { |
033a42c2 MK |
1402 | strcat (arg, argv[i]); |
1403 | strcat (arg, " "); | |
c5aa993b JM |
1404 | } |
1405 | } | |
1406 | } | |
1407 | else | |
033a42c2 | 1408 | arg = NULL; |
c5aa993b | 1409 | } |
c906108c SS |
1410 | } |
1411 | ||
b1d288d3 | 1412 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty); |
c906108c | 1413 | |
5fe41fbf | 1414 | do_cleanups (old_chain); |
c906108c SS |
1415 | } |
1416 | ||
1417 | static void | |
fba45db2 | 1418 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1419 | { |
b1d288d3 | 1420 | backtrace_command_1 (arg, 1 /* show_locals */, from_tty); |
c906108c | 1421 | } |
c906108c | 1422 | \f |
c5aa993b | 1423 | |
2c58c0a9 PA |
1424 | /* Iterate over the local variables of a block B, calling CB with |
1425 | CB_DATA. */ | |
c906108c | 1426 | |
2c58c0a9 PA |
1427 | static void |
1428 | iterate_over_block_locals (struct block *b, | |
1429 | iterate_over_block_arg_local_vars_cb cb, | |
1430 | void *cb_data) | |
c906108c | 1431 | { |
de4f826b | 1432 | struct dict_iterator iter; |
de4f826b | 1433 | struct symbol *sym; |
c906108c | 1434 | |
de4f826b | 1435 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1436 | { |
c906108c SS |
1437 | switch (SYMBOL_CLASS (sym)) |
1438 | { | |
1439 | case LOC_LOCAL: | |
1440 | case LOC_REGISTER: | |
1441 | case LOC_STATIC: | |
4c2df51b | 1442 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1443 | if (SYMBOL_IS_ARGUMENT (sym)) |
1444 | break; | |
2c58c0a9 | 1445 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1446 | break; |
1447 | ||
1448 | default: | |
1449 | /* Ignore symbols which are not locals. */ | |
1450 | break; | |
1451 | } | |
1452 | } | |
c906108c SS |
1453 | } |
1454 | ||
65c06092 | 1455 | |
c906108c SS |
1456 | /* Same, but print labels. */ |
1457 | ||
65c06092 JB |
1458 | #if 0 |
1459 | /* Commented out, as the code using this function has also been | |
1460 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1461 | was commented out in the first place. The discussion introducing | |
1462 | this change (2007-12-04: Support lexical blocks and function bodies | |
1463 | that occupy non-contiguous address ranges) did not explain why | |
1464 | this change was made. */ | |
c906108c | 1465 | static int |
5af949e3 UW |
1466 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1467 | int *have_default, struct ui_file *stream) | |
c906108c | 1468 | { |
de4f826b | 1469 | struct dict_iterator iter; |
52f0bd74 AC |
1470 | struct symbol *sym; |
1471 | int values_printed = 0; | |
c906108c | 1472 | |
de4f826b | 1473 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1474 | { |
3567439c | 1475 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1476 | { |
1477 | if (*have_default) | |
1478 | continue; | |
1479 | *have_default = 1; | |
1480 | } | |
1481 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1482 | { | |
1483 | struct symtab_and_line sal; | |
79a45b7d | 1484 | struct value_print_options opts; |
433759f7 | 1485 | |
c906108c SS |
1486 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1487 | values_printed = 1; | |
de5ad195 | 1488 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1489 | get_user_print_options (&opts); |
1490 | if (opts.addressprint) | |
c906108c SS |
1491 | { |
1492 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1493 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1494 | stream); | |
c906108c SS |
1495 | } |
1496 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1497 | sal.symtab->filename, sal.line); | |
1498 | } | |
1499 | } | |
033a42c2 | 1500 | |
c906108c SS |
1501 | return values_printed; |
1502 | } | |
65c06092 | 1503 | #endif |
c906108c | 1504 | |
2c58c0a9 PA |
1505 | /* Iterate over all the local variables in block B, including all its |
1506 | superblocks, stopping when the top-level block is reached. */ | |
1507 | ||
1508 | void | |
1509 | iterate_over_block_local_vars (struct block *block, | |
1510 | iterate_over_block_arg_local_vars_cb cb, | |
1511 | void *cb_data) | |
1512 | { | |
1513 | while (block) | |
1514 | { | |
1515 | iterate_over_block_locals (block, cb, cb_data); | |
1516 | /* After handling the function's top-level block, stop. Don't | |
1517 | continue to its superblock, the block of per-file | |
1518 | symbols. */ | |
1519 | if (BLOCK_FUNCTION (block)) | |
1520 | break; | |
1521 | block = BLOCK_SUPERBLOCK (block); | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | /* Data to be passed around in the calls to the locals and args | |
1526 | iterators. */ | |
c906108c | 1527 | |
2c58c0a9 PA |
1528 | struct print_variable_and_value_data |
1529 | { | |
1530 | struct frame_info *frame; | |
1531 | int num_tabs; | |
1532 | struct ui_file *stream; | |
1533 | int values_printed; | |
1534 | }; | |
1535 | ||
c378eb4e | 1536 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
1537 | |
1538 | static void | |
1539 | do_print_variable_and_value (const char *print_name, | |
1540 | struct symbol *sym, | |
1541 | void *cb_data) | |
1542 | { | |
1543 | struct print_variable_and_value_data *p = cb_data; | |
1544 | ||
1545 | print_variable_and_value (print_name, sym, | |
1546 | p->frame, p->stream, p->num_tabs); | |
1547 | p->values_printed = 1; | |
1548 | } | |
c906108c SS |
1549 | |
1550 | static void | |
033a42c2 | 1551 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1552 | struct ui_file *stream) |
c906108c | 1553 | { |
2c58c0a9 PA |
1554 | struct print_variable_and_value_data cb_data; |
1555 | struct block *block; | |
1d4f5741 PA |
1556 | CORE_ADDR pc; |
1557 | ||
1558 | if (!get_frame_pc_if_available (frame, &pc)) | |
1559 | { | |
1560 | fprintf_filtered (stream, | |
1561 | _("PC unavailable, cannot determine locals.\n")); | |
1562 | return; | |
1563 | } | |
c906108c | 1564 | |
2c58c0a9 | 1565 | block = get_frame_block (frame, 0); |
c906108c SS |
1566 | if (block == 0) |
1567 | { | |
1568 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1569 | return; | |
1570 | } | |
c5aa993b | 1571 | |
2c58c0a9 PA |
1572 | cb_data.frame = frame; |
1573 | cb_data.num_tabs = 4 * num_tabs; | |
1574 | cb_data.stream = stream; | |
1575 | cb_data.values_printed = 0; | |
1576 | ||
1577 | iterate_over_block_local_vars (block, | |
1578 | do_print_variable_and_value, | |
1579 | &cb_data); | |
c906108c | 1580 | |
2c58c0a9 | 1581 | if (!cb_data.values_printed) |
033a42c2 | 1582 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1583 | } |
1584 | ||
1585 | /* Same, but print labels. */ | |
1586 | ||
1587 | static void | |
033a42c2 | 1588 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1589 | struct ui_file *stream) |
c906108c | 1590 | { |
801e3a5b JB |
1591 | #if 1 |
1592 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1593 | #else | |
52f0bd74 | 1594 | struct blockvector *bl; |
033a42c2 | 1595 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1596 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1597 | int values_printed = 0; |
c906108c SS |
1598 | int index, have_default = 0; |
1599 | char *blocks_printed; | |
033a42c2 | 1600 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1601 | |
1602 | if (block == 0) | |
1603 | { | |
1604 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1605 | return; | |
1606 | } | |
1607 | ||
1608 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1609 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1610 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1611 | ||
1612 | while (block != 0) | |
1613 | { | |
1614 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1615 | int last_index; | |
1616 | ||
1617 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1618 | error (_("blockvector blotch")); |
c906108c | 1619 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1620 | error (_("blockvector botch")); |
c906108c SS |
1621 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1622 | index += 1; | |
1623 | ||
1624 | /* Don't print out blocks that have gone by. */ | |
1625 | while (index < last_index | |
1626 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1627 | index++; | |
1628 | ||
1629 | while (index < last_index | |
1630 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1631 | { | |
1632 | if (blocks_printed[index] == 0) | |
1633 | { | |
5af949e3 UW |
1634 | if (print_block_frame_labels (gdbarch, |
1635 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 1636 | &have_default, stream)) |
c906108c SS |
1637 | values_printed = 1; |
1638 | blocks_printed[index] = 1; | |
1639 | } | |
1640 | index++; | |
1641 | } | |
1642 | if (have_default) | |
1643 | return; | |
1644 | if (values_printed && this_level_only) | |
1645 | return; | |
1646 | ||
033a42c2 | 1647 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1648 | continue to its superblock, the block of per-file symbols. |
1649 | Also do not continue to the containing function of an inlined | |
1650 | function. */ | |
c906108c SS |
1651 | if (BLOCK_FUNCTION (block)) |
1652 | break; | |
1653 | block = BLOCK_SUPERBLOCK (block); | |
1654 | } | |
1655 | ||
1656 | if (!values_printed && !this_level_only) | |
033a42c2 | 1657 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1658 | #endif |
c906108c SS |
1659 | } |
1660 | ||
c906108c | 1661 | void |
fba45db2 | 1662 | locals_info (char *args, int from_tty) |
c906108c | 1663 | { |
033a42c2 | 1664 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1665 | 0, gdb_stdout); |
c906108c SS |
1666 | } |
1667 | ||
1668 | static void | |
fba45db2 | 1669 | catch_info (char *ignore, int from_tty) |
c906108c | 1670 | { |
dfdfb3ca JB |
1671 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1672 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1673 | 0, gdb_stdout); | |
c906108c SS |
1674 | } |
1675 | ||
2c58c0a9 PA |
1676 | /* Iterate over all the argument variables in block B. |
1677 | ||
1678 | Returns 1 if any argument was walked; 0 otherwise. */ | |
1679 | ||
1680 | void | |
1681 | iterate_over_block_arg_vars (struct block *b, | |
1682 | iterate_over_block_arg_local_vars_cb cb, | |
1683 | void *cb_data) | |
c906108c | 1684 | { |
de4f826b | 1685 | struct dict_iterator iter; |
52f0bd74 | 1686 | struct symbol *sym, *sym2; |
c906108c | 1687 | |
de4f826b | 1688 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1689 | { |
2a2d4dc3 AS |
1690 | /* Don't worry about things which aren't arguments. */ |
1691 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1692 | { |
c906108c SS |
1693 | /* We have to look up the symbol because arguments can have |
1694 | two entries (one a parameter, one a local) and the one we | |
1695 | want is the local, which lookup_symbol will find for us. | |
1696 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1697 | small structure and gcc2 when the argument type is float | |
1698 | and it is passed as a double and converted to float by | |
1699 | the prologue (in the latter case the type of the LOC_ARG | |
1700 | symbol is double and the type of the LOC_LOCAL symbol is | |
1701 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1702 | are not combined in symbol-reading. */ | |
1703 | ||
3567439c | 1704 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 1705 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 1706 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
1707 | } |
1708 | } | |
2c58c0a9 PA |
1709 | } |
1710 | ||
1711 | static void | |
1712 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
1713 | { | |
1714 | struct print_variable_and_value_data cb_data; | |
1715 | struct symbol *func; | |
1d4f5741 PA |
1716 | CORE_ADDR pc; |
1717 | ||
1718 | if (!get_frame_pc_if_available (frame, &pc)) | |
1719 | { | |
1720 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
1721 | return; | |
1722 | } | |
2c58c0a9 PA |
1723 | |
1724 | func = get_frame_function (frame); | |
1725 | if (func == NULL) | |
1726 | { | |
1727 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
1728 | return; | |
1729 | } | |
1730 | ||
1731 | cb_data.frame = frame; | |
1732 | cb_data.num_tabs = 0; | |
1733 | cb_data.stream = gdb_stdout; | |
1734 | cb_data.values_printed = 0; | |
1735 | ||
1736 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
1737 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 1738 | |
2c58c0a9 | 1739 | if (!cb_data.values_printed) |
033a42c2 | 1740 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1741 | } |
1742 | ||
1743 | void | |
fba45db2 | 1744 | args_info (char *ignore, int from_tty) |
c906108c | 1745 | { |
033a42c2 | 1746 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1747 | gdb_stdout); |
c906108c SS |
1748 | } |
1749 | ||
1750 | ||
1751 | static void | |
fba45db2 | 1752 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1753 | { |
c5aa993b JM |
1754 | args_info (ignore, from_tty); |
1755 | locals_info (ignore, from_tty); | |
c906108c | 1756 | } |
c906108c | 1757 | \f |
c5aa993b | 1758 | |
033a42c2 MK |
1759 | /* Select frame FRAME. Also print the stack frame and show the source |
1760 | if this is the tui version. */ | |
bedfa57b | 1761 | static void |
033a42c2 | 1762 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1763 | { |
033a42c2 MK |
1764 | select_frame (frame); |
1765 | if (frame) | |
1766 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1767 | } |
c906108c | 1768 | \f |
c906108c | 1769 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1770 | Can return zero under various legitimate circumstances. |
1771 | ||
1772 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1773 | code address within the block returned. We use this to decide | |
1774 | which macros are in scope. */ | |
c906108c SS |
1775 | |
1776 | struct block * | |
ae767bfb | 1777 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 1778 | { |
d729566a | 1779 | if (!has_stack_frames ()) |
8ea051c5 PA |
1780 | return 0; |
1781 | ||
206415a3 | 1782 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1783 | } |
1784 | ||
1785 | /* Find a frame a certain number of levels away from FRAME. | |
1786 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1787 | Positive means go to earlier frames (up); negative, the reverse. | |
1788 | The int that contains the number of levels is counted toward | |
1789 | zero as the frames for those levels are found. | |
1790 | If the top or bottom frame is reached, that frame is returned, | |
1791 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1792 | how much farther the original request asked to go. */ | |
1793 | ||
1794 | struct frame_info * | |
033a42c2 | 1795 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1796 | { |
033a42c2 MK |
1797 | /* Going up is simple: just call get_prev_frame enough times or |
1798 | until the initial frame is reached. */ | |
c906108c SS |
1799 | while (*level_offset_ptr > 0) |
1800 | { | |
033a42c2 | 1801 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 1802 | |
033a42c2 | 1803 | if (!prev) |
c906108c SS |
1804 | break; |
1805 | (*level_offset_ptr)--; | |
1806 | frame = prev; | |
1807 | } | |
033a42c2 | 1808 | |
c906108c | 1809 | /* Going down is just as simple. */ |
033a42c2 | 1810 | while (*level_offset_ptr < 0) |
c906108c | 1811 | { |
033a42c2 | 1812 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 1813 | |
033a42c2 MK |
1814 | if (!next) |
1815 | break; | |
1816 | (*level_offset_ptr)++; | |
1817 | frame = next; | |
c906108c | 1818 | } |
033a42c2 | 1819 | |
c906108c SS |
1820 | return frame; |
1821 | } | |
1822 | ||
033a42c2 MK |
1823 | /* The "select_frame" command. With no argument this is a NOP. |
1824 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1825 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1826 | ||
1827 | See parse_frame_specification for more info on proper frame | |
1828 | expressions. */ | |
c906108c | 1829 | |
8b93c638 | 1830 | void |
fba45db2 | 1831 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1832 | { |
1c8831c5 | 1833 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1834 | } |
1835 | ||
033a42c2 MK |
1836 | /* The "frame" command. With no argument, print the selected frame |
1837 | briefly. With an argument, behave like select_frame and then print | |
1838 | the selected frame. */ | |
c906108c | 1839 | |
033a42c2 | 1840 | static void |
fba45db2 | 1841 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1842 | { |
1843 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1844 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1845 | } |
1846 | ||
033a42c2 | 1847 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1848 | |
7a292a7a | 1849 | static void |
fba45db2 | 1850 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1851 | { |
033a42c2 | 1852 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1853 | } |
c906108c | 1854 | |
033a42c2 MK |
1855 | /* Select the frame up one or COUNT_EXP stack levels from the |
1856 | previously selected frame, and print it briefly. */ | |
c906108c | 1857 | |
c906108c | 1858 | static void |
fba45db2 | 1859 | up_silently_base (char *count_exp) |
c906108c | 1860 | { |
033a42c2 MK |
1861 | struct frame_info *frame; |
1862 | int count = 1; | |
1863 | ||
c906108c | 1864 | if (count_exp) |
bb518678 | 1865 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1866 | |
033a42c2 MK |
1867 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1868 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1869 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1870 | select_frame (frame); |
c906108c SS |
1871 | } |
1872 | ||
1873 | static void | |
fba45db2 | 1874 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1875 | { |
c5aa993b | 1876 | up_silently_base (count_exp); |
c906108c SS |
1877 | } |
1878 | ||
1879 | static void | |
fba45db2 | 1880 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1881 | { |
1882 | up_silently_base (count_exp); | |
b04f3ab4 | 1883 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1884 | } |
1885 | ||
033a42c2 MK |
1886 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1887 | selected frame, and print it briefly. */ | |
c906108c | 1888 | |
c906108c | 1889 | static void |
fba45db2 | 1890 | down_silently_base (char *count_exp) |
c906108c | 1891 | { |
52f0bd74 | 1892 | struct frame_info *frame; |
033a42c2 | 1893 | int count = -1; |
f89b749f | 1894 | |
c906108c | 1895 | if (count_exp) |
bb518678 | 1896 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1897 | |
033a42c2 MK |
1898 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1899 | if (count != 0 && count_exp == NULL) | |
c906108c | 1900 | { |
033a42c2 MK |
1901 | /* We only do this if COUNT_EXP is not specified. That way |
1902 | "down" means to really go down (and let me know if that is | |
1903 | impossible), but "down 9999" can be used to mean go all the | |
1904 | way down without getting an error. */ | |
c906108c | 1905 | |
033a42c2 | 1906 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1907 | } |
1908 | ||
0f7d239c | 1909 | select_frame (frame); |
c906108c SS |
1910 | } |
1911 | ||
c906108c | 1912 | static void |
fba45db2 | 1913 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1914 | { |
1915 | down_silently_base (count_exp); | |
c906108c SS |
1916 | } |
1917 | ||
1918 | static void | |
fba45db2 | 1919 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1920 | { |
1921 | down_silently_base (count_exp); | |
b04f3ab4 | 1922 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1923 | } |
1924 | \f | |
033a42c2 | 1925 | |
8b93c638 | 1926 | void |
fba45db2 | 1927 | return_command (char *retval_exp, int from_tty) |
c906108c | 1928 | { |
5ed92fa8 | 1929 | struct frame_info *thisframe; |
d80b854b | 1930 | struct gdbarch *gdbarch; |
c906108c | 1931 | struct symbol *thisfun; |
3d6d86c6 | 1932 | struct value *return_value = NULL; |
fc70c2a0 | 1933 | const char *query_prefix = ""; |
c906108c | 1934 | |
5ed92fa8 UW |
1935 | thisframe = get_selected_frame ("No selected frame."); |
1936 | thisfun = get_frame_function (thisframe); | |
d80b854b | 1937 | gdbarch = get_frame_arch (thisframe); |
c906108c | 1938 | |
edb3359d DJ |
1939 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
1940 | error (_("Can not force return from an inlined function.")); | |
1941 | ||
fc70c2a0 AC |
1942 | /* Compute the return value. If the computation triggers an error, |
1943 | let it bail. If the return type can't be handled, set | |
1944 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1945 | message. */ | |
c906108c SS |
1946 | if (retval_exp) |
1947 | { | |
61ff14c6 JK |
1948 | struct expression *retval_expr = parse_expression (retval_exp); |
1949 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
1950 | struct type *return_type = NULL; |
1951 | ||
fc70c2a0 AC |
1952 | /* Compute the return value. Should the computation fail, this |
1953 | call throws an error. */ | |
61ff14c6 | 1954 | return_value = evaluate_expression (retval_expr); |
c906108c | 1955 | |
fc70c2a0 AC |
1956 | /* Cast return value to the return type of the function. Should |
1957 | the cast fail, this call throws an error. */ | |
c906108c SS |
1958 | if (thisfun != NULL) |
1959 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1960 | if (return_type == NULL) | |
61ff14c6 JK |
1961 | { |
1962 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
1963 | error (_("Return value type not available for selected " | |
1964 | "stack frame.\n" | |
1965 | "Please use an explicit cast of the value to return.")); | |
1966 | return_type = value_type (return_value); | |
1967 | } | |
1968 | do_cleanups (old_chain); | |
3e9a183c | 1969 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1970 | return_value = value_cast (return_type, return_value); |
1971 | ||
fc70c2a0 AC |
1972 | /* Make sure the value is fully evaluated. It may live in the |
1973 | stack frame we're about to pop. */ | |
d69fe07e | 1974 | if (value_lazy (return_value)) |
c906108c | 1975 | value_fetch_lazy (return_value); |
c906108c | 1976 | |
667e784f AC |
1977 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1978 | /* If the return-type is "void", don't try to find the | |
1979 | return-value's location. However, do still evaluate the | |
1980 | return expression so that, even when the expression result | |
1981 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1982 | occur. */ |
667e784f | 1983 | return_value = NULL; |
42e2132c | 1984 | else if (thisfun != NULL |
d80b854b UW |
1985 | && using_struct_return (gdbarch, |
1986 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 1987 | { |
3e43a32a MS |
1988 | query_prefix = "The location at which to store the " |
1989 | "function's return value is unknown.\n" | |
1990 | "If you continue, the return value " | |
1991 | "that you specified will be ignored.\n"; | |
667e784f | 1992 | return_value = NULL; |
fc70c2a0 | 1993 | } |
c906108c SS |
1994 | } |
1995 | ||
fc70c2a0 AC |
1996 | /* Does an interactive user really want to do this? Include |
1997 | information, such as how well GDB can handle the return value, in | |
1998 | the query message. */ | |
1999 | if (from_tty) | |
2000 | { | |
2001 | int confirmed; | |
433759f7 | 2002 | |
fc70c2a0 | 2003 | if (thisfun == NULL) |
e2e0b3e5 | 2004 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
2005 | query_prefix); |
2006 | else | |
e2e0b3e5 | 2007 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
2008 | SYMBOL_PRINT_NAME (thisfun)); |
2009 | if (!confirmed) | |
8a3fe4f8 | 2010 | error (_("Not confirmed")); |
fc70c2a0 | 2011 | } |
c906108c | 2012 | |
a45ae3ed UW |
2013 | /* Discard the selected frame and all frames inner-to it. */ |
2014 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2015 | |
a1f5b845 | 2016 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2017 | if (return_value != NULL) |
2018 | { | |
df407dfe | 2019 | struct type *return_type = value_type (return_value); |
7500260a | 2020 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
2021 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
2022 | ||
2023 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
2024 | NULL, NULL) | |
750eb019 | 2025 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 2026 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 2027 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2028 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2029 | } |
1a2aab69 | 2030 | |
fc70c2a0 AC |
2031 | /* If we are at the end of a call dummy now, pop the dummy frame |
2032 | too. */ | |
e8bcf01f AC |
2033 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2034 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2035 | |
c906108c | 2036 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2037 | if (from_tty) |
2038 | frame_command ("0", 1); | |
2039 | else | |
2040 | select_frame_command ("0", 0); | |
2041 | } | |
2042 | ||
033a42c2 | 2043 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2044 | is within the current stack frame. */ |
c906108c SS |
2045 | |
2046 | struct function_bounds | |
2047 | { | |
2048 | CORE_ADDR low, high; | |
2049 | }; | |
2050 | ||
2051 | static void | |
fba45db2 | 2052 | func_command (char *arg, int from_tty) |
c906108c | 2053 | { |
033a42c2 | 2054 | struct frame_info *frame; |
c906108c SS |
2055 | int found = 0; |
2056 | struct symtabs_and_lines sals; | |
2057 | int i; | |
2058 | int level = 1; | |
033a42c2 | 2059 | struct function_bounds *func_bounds = NULL; |
c906108c | 2060 | |
033a42c2 | 2061 | if (arg != NULL) |
c906108c SS |
2062 | return; |
2063 | ||
033a42c2 | 2064 | frame = parse_frame_specification ("0"); |
c906108c SS |
2065 | sals = decode_line_spec (arg, 1); |
2066 | func_bounds = (struct function_bounds *) xmalloc ( | |
2067 | sizeof (struct function_bounds) * sals.nelts); | |
2068 | for (i = 0; (i < sals.nelts && !found); i++) | |
2069 | { | |
033a42c2 MK |
2070 | if (sals.sals[i].pc == 0 |
2071 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2072 | &func_bounds[i].low, | |
2073 | &func_bounds[i].high) == 0) | |
c906108c | 2074 | { |
033a42c2 | 2075 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2076 | } |
2077 | } | |
2078 | ||
2079 | do | |
2080 | { | |
2081 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2082 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2083 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2084 | if (!found) |
2085 | { | |
2086 | level = 1; | |
033a42c2 | 2087 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2088 | } |
2089 | } | |
2090 | while (!found && level == 0); | |
2091 | ||
2092 | if (func_bounds) | |
b8c9b27d | 2093 | xfree (func_bounds); |
c906108c SS |
2094 | |
2095 | if (!found) | |
a3f17187 | 2096 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2097 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2098 | select_and_print_frame (frame); |
c906108c SS |
2099 | } |
2100 | ||
2101 | /* Gets the language of the current frame. */ | |
2102 | ||
2103 | enum language | |
fba45db2 | 2104 | get_frame_language (void) |
c906108c | 2105 | { |
206415a3 | 2106 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2107 | |
033a42c2 | 2108 | if (frame) |
c906108c | 2109 | { |
e3eebbd7 PA |
2110 | volatile struct gdb_exception ex; |
2111 | CORE_ADDR pc = 0; | |
2112 | struct symtab *s; | |
2113 | ||
7ae4c3a5 | 2114 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2115 | associated symtab. To retrieve this symtab, we use the frame |
2116 | PC. However we cannot use the frame PC as is, because it | |
2117 | usually points to the instruction following the "call", which | |
2118 | is sometimes the first instruction of another function. So | |
2119 | we rely on get_frame_address_in_block(), it provides us with | |
2120 | a PC that is guaranteed to be inside the frame's code | |
2121 | block. */ | |
033a42c2 | 2122 | |
e3eebbd7 PA |
2123 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2124 | { | |
2125 | pc = get_frame_address_in_block (frame); | |
2126 | } | |
2127 | if (ex.reason < 0) | |
2128 | { | |
2129 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2130 | throw_exception (ex); | |
2131 | } | |
2132 | else | |
2133 | { | |
2134 | s = find_pc_symtab (pc); | |
2135 | if (s != NULL) | |
2136 | return s->language; | |
2137 | } | |
c906108c | 2138 | } |
c906108c | 2139 | |
033a42c2 | 2140 | return language_unknown; |
c906108c SS |
2141 | } |
2142 | \f | |
033a42c2 MK |
2143 | |
2144 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2145 | void _initialize_stack (void); | |
2146 | ||
c906108c | 2147 | void |
fba45db2 | 2148 | _initialize_stack (void) |
c906108c | 2149 | { |
1bedd215 AC |
2150 | add_com ("return", class_stack, return_command, _("\ |
2151 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2152 | Control remains in the debugger, but when you continue\n\ |
2153 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2154 | If an argument is given, it is an expression for the value to return.")); |
2155 | ||
2156 | add_com ("up", class_stack, up_command, _("\ | |
2157 | Select and print stack frame that called this one.\n\ | |
2158 | An argument says how many frames up to go.")); | |
2159 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2160 | Same as the `up' command, but does not print anything.\n\ | |
2161 | This is useful in command scripts.")); | |
2162 | ||
2163 | add_com ("down", class_stack, down_command, _("\ | |
2164 | Select and print stack frame called by this one.\n\ | |
2165 | An argument says how many frames down to go.")); | |
c906108c SS |
2166 | add_com_alias ("do", "down", class_stack, 1); |
2167 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2168 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2169 | Same as the `down' command, but does not print anything.\n\ | |
2170 | This is useful in command scripts.")); | |
c906108c | 2171 | |
1bedd215 | 2172 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2173 | Select and print a stack frame.\nWith no argument, \ |
2174 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2175 | An argument specifies the frame to select.\n\ |
2176 | It can be a stack frame number or the address of the frame.\n\ | |
2177 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2178 | a command file or a user-defined command.")); |
c906108c SS |
2179 | |
2180 | add_com_alias ("f", "frame", class_stack, 1); | |
2181 | ||
2182 | if (xdb_commands) | |
2183 | { | |
c5aa993b | 2184 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2185 | _("Print the current stack frame.\n")); |
c906108c SS |
2186 | add_com_alias ("V", "frame", class_stack, 1); |
2187 | } | |
1bedd215 AC |
2188 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2189 | Select a stack frame without printing anything.\n\ | |
c906108c | 2190 | An argument specifies the frame to select.\n\ |
1bedd215 | 2191 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2192 | |
1bedd215 AC |
2193 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2194 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a MS |
2195 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
2196 | 'full' qualifier also prints the values of the local variables.\n")); | |
c906108c SS |
2197 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2198 | if (xdb_commands) | |
2199 | { | |
2200 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2201 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2202 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2203 | and the values of the local variables.\n\ |
2204 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2205 | Usage: T <count>\n")); |
c906108c SS |
2206 | } |
2207 | ||
2208 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2209 | add_info ("stack", backtrace_command, | |
1bedd215 | 2210 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2211 | add_info_alias ("s", "stack", 1); |
2212 | add_info ("frame", frame_info, | |
1bedd215 | 2213 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2214 | add_info_alias ("f", "frame", 1); |
2215 | add_info ("locals", locals_info, | |
1bedd215 | 2216 | _("Local variables of current stack frame.")); |
c906108c | 2217 | add_info ("args", args_info, |
1bedd215 | 2218 | _("Argument variables of current stack frame.")); |
c906108c | 2219 | if (xdb_commands) |
c5aa993b | 2220 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2221 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2222 | |
2223 | if (dbx_commands) | |
1bedd215 AC |
2224 | add_com ("func", class_stack, func_command, _("\ |
2225 | Select the stack frame that contains <func>.\n\ | |
2226 | Usage: func <name>\n")); | |
c906108c SS |
2227 | |
2228 | add_info ("catch", catch_info, | |
1bedd215 | 2229 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2230 | |
88408340 JB |
2231 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2232 | print_frame_arguments_choices, &print_frame_arguments, | |
2233 | _("Set printing of non-scalar frame arguments"), | |
2234 | _("Show printing of non-scalar frame arguments"), | |
2235 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2236 | ||
30c33a9f HZ |
2237 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2238 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2239 | Set whether to disassemble next source line or insn when execution stops."), |
2240 | _("\ | |
2241 | Show whether to disassemble next source line or insn when execution stops."), | |
2242 | _("\ | |
80a0ea0f EZ |
2243 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2244 | to displaying the source line itself. If the next source line cannot\n\ | |
2245 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2246 | will display disassembly of next instruction instead of showing the\n\ | |
2247 | source line.\n\ | |
2248 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2249 | cannot be displayed.\n\ | |
2250 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2251 | source line."), | |
30c33a9f HZ |
2252 | NULL, |
2253 | show_disassemble_next_line, | |
2254 | &setlist, &showlist); | |
a362e3d3 | 2255 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
c906108c | 2256 | } |