Commit | Line | Data |
---|---|---|
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 JB |
328 | { |
329 | /* Avoid value_print because it will deref ref parameters. | |
330 | We just want to print their addresses. Print ??? for | |
331 | args whose address we do not know. We pass 2 as | |
332 | "recurse" to val_print because our standard indentation | |
333 | here is 4 spaces, and val_print indents 2 for each | |
334 | recurse. */ | |
335 | val = read_var_value (sym, frame); | |
336 | ||
337 | annotate_arg_value (val == NULL ? NULL : value_type (val)); | |
338 | ||
339 | if (val) | |
340 | { | |
d8ca156b | 341 | const struct language_defn *language; |
79a45b7d | 342 | struct value_print_options opts; |
d8ca156b JB |
343 | |
344 | /* Use the appropriate language to display our symbol, | |
345 | unless the user forced the language to a specific | |
346 | language. */ | |
347 | if (language_mode == language_mode_auto) | |
348 | language = language_def (SYMBOL_LANGUAGE (sym)); | |
349 | else | |
350 | language = current_language; | |
351 | ||
79a45b7d TT |
352 | get_raw_print_options (&opts); |
353 | opts.deref_ref = 0; | |
a6bac58e TT |
354 | opts.summary = summary; |
355 | common_val_print (val, stb->stream, 2, &opts, language); | |
88408340 JB |
356 | ui_out_field_stream (uiout, "value", stb); |
357 | } | |
358 | else | |
359 | ui_out_text (uiout, "???"); | |
360 | } | |
361 | else | |
362 | ui_out_text (uiout, "..."); | |
8d3b0994 | 363 | |
8d3b0994 AC |
364 | |
365 | /* Invoke ui_out_tuple_end. */ | |
366 | do_cleanups (list_chain); | |
367 | ||
368 | annotate_arg_end (); | |
369 | ||
370 | first = 0; | |
371 | } | |
372 | } | |
373 | ||
374 | /* Don't print nameless args in situations where we don't know | |
375 | enough about the stack to find them. */ | |
376 | if (num != -1) | |
377 | { | |
378 | long start; | |
379 | ||
380 | if (highest_offset == -1) | |
7500260a | 381 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
8d3b0994 AC |
382 | else |
383 | start = highest_offset; | |
384 | ||
033a42c2 | 385 | print_frame_nameless_args (frame, start, num - args_printed, |
8d3b0994 AC |
386 | first, stream); |
387 | } | |
033a42c2 | 388 | |
8d3b0994 AC |
389 | do_cleanups (old_chain); |
390 | } | |
391 | ||
033a42c2 MK |
392 | /* Set the current source and line to the location given by frame |
393 | FRAME, if possible. When CENTER is true, adjust so the relevant | |
394 | line is in the center of the next 'list'. */ | |
c789492a | 395 | |
7abfe014 | 396 | void |
033a42c2 | 397 | set_current_sal_from_frame (struct frame_info *frame, int center) |
c789492a FL |
398 | { |
399 | struct symtab_and_line sal; | |
400 | ||
033a42c2 | 401 | find_frame_sal (frame, &sal); |
c789492a FL |
402 | if (sal.symtab) |
403 | { | |
404 | if (center) | |
405 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); | |
406 | set_current_source_symtab_and_line (&sal); | |
407 | } | |
408 | } | |
409 | ||
30c33a9f HZ |
410 | /* If ON, GDB will display disassembly of the next source line when |
411 | execution of the program being debugged stops. | |
481df73e HZ |
412 | If AUTO (which is the default), or there's no line info to determine |
413 | the source line of the next instruction, display disassembly of next | |
414 | instruction instead. */ | |
30c33a9f HZ |
415 | |
416 | static enum auto_boolean disassemble_next_line; | |
417 | ||
418 | static void | |
419 | show_disassemble_next_line (struct ui_file *file, int from_tty, | |
420 | struct cmd_list_element *c, | |
421 | const char *value) | |
422 | { | |
3e43a32a MS |
423 | fprintf_filtered (file, |
424 | _("Debugger's willingness to use " | |
425 | "disassemble-next-line is %s.\n"), | |
30c33a9f HZ |
426 | value); |
427 | } | |
428 | ||
30c33a9f HZ |
429 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
430 | because it will be broken by filter sometime. */ | |
431 | ||
432 | static void | |
13274fc3 UW |
433 | do_gdb_disassembly (struct gdbarch *gdbarch, |
434 | int how_many, CORE_ADDR low, CORE_ADDR high) | |
30c33a9f HZ |
435 | { |
436 | volatile struct gdb_exception exception; | |
30c33a9f | 437 | |
b1d288d3 | 438 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
30c33a9f | 439 | { |
79a45e25 PA |
440 | gdb_disassembly (gdbarch, current_uiout, 0, |
441 | DISASSEMBLY_RAW_INSN, how_many, | |
442 | low, high); | |
30c33a9f | 443 | } |
b1d288d3 JK |
444 | if (exception.reason < 0) |
445 | { | |
446 | /* If an exception was thrown while doing the disassembly, print | |
447 | the error message, to give the user a clue of what happened. */ | |
448 | exception_print (gdb_stderr, exception); | |
449 | } | |
30c33a9f HZ |
450 | } |
451 | ||
033a42c2 | 452 | /* Print information about frame FRAME. The output is format according |
65aa373f | 453 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
033a42c2 MK |
454 | PRINT_WHAT is: |
455 | ||
456 | SRC_LINE: Print only source line. | |
457 | LOCATION: Print only location. | |
458 | LOC_AND_SRC: Print location and source line. | |
459 | ||
460 | Used in "where" output, and to emit breakpoint or step | |
461 | messages. */ | |
c906108c | 462 | |
7789c6f5 | 463 | void |
033a42c2 | 464 | print_frame_info (struct frame_info *frame, int print_level, |
0faf0076 | 465 | enum print_what print_what, int print_args) |
c906108c | 466 | { |
5af949e3 | 467 | struct gdbarch *gdbarch = get_frame_arch (frame); |
c906108c | 468 | struct symtab_and_line sal; |
c5394b80 JM |
469 | int source_print; |
470 | int location_print; | |
79a45e25 | 471 | struct ui_out *uiout = current_uiout; |
c906108c | 472 | |
033a42c2 | 473 | if (get_frame_type (frame) == DUMMY_FRAME |
36f15f55 UW |
474 | || get_frame_type (frame) == SIGTRAMP_FRAME |
475 | || get_frame_type (frame) == ARCH_FRAME) | |
c906108c | 476 | { |
075559bc AC |
477 | struct cleanup *uiout_cleanup |
478 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); | |
c906108c | 479 | |
033a42c2 | 480 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
5af949e3 | 481 | gdbarch, get_frame_pc (frame)); |
6a3fe0a4 | 482 | |
c906108c | 483 | /* Do this regardless of SOURCE because we don't have any source |
c5aa993b | 484 | to list for this frame. */ |
0faf0076 | 485 | if (print_level) |
52c6a6ac JJ |
486 | { |
487 | ui_out_text (uiout, "#"); | |
0faf0076 | 488 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 489 | frame_relative_level (frame)); |
52c6a6ac | 490 | } |
075559bc | 491 | if (ui_out_is_mi_like_p (uiout)) |
52c6a6ac | 492 | { |
075559bc | 493 | annotate_frame_address (); |
5af949e3 UW |
494 | ui_out_field_core_addr (uiout, "addr", |
495 | gdbarch, get_frame_pc (frame)); | |
075559bc | 496 | annotate_frame_address_end (); |
52c6a6ac | 497 | } |
6a3fe0a4 | 498 | |
033a42c2 | 499 | if (get_frame_type (frame) == DUMMY_FRAME) |
075559bc AC |
500 | { |
501 | annotate_function_call (); | |
502 | ui_out_field_string (uiout, "func", "<function called from gdb>"); | |
503 | } | |
033a42c2 | 504 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
075559bc AC |
505 | { |
506 | annotate_signal_handler_caller (); | |
507 | ui_out_field_string (uiout, "func", "<signal handler called>"); | |
508 | } | |
36f15f55 UW |
509 | else if (get_frame_type (frame) == ARCH_FRAME) |
510 | { | |
511 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); | |
512 | } | |
075559bc | 513 | ui_out_text (uiout, "\n"); |
c906108c | 514 | annotate_frame_end (); |
075559bc AC |
515 | |
516 | do_cleanups (uiout_cleanup); | |
c906108c SS |
517 | return; |
518 | } | |
519 | ||
033a42c2 MK |
520 | /* If FRAME is not the innermost frame, that normally means that |
521 | FRAME->pc points to *after* the call instruction, and we want to | |
522 | get the line containing the call, never the next line. But if | |
523 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the | |
524 | next frame was not entered as the result of a call, and we want | |
525 | to get the line containing FRAME->pc. */ | |
526 | find_frame_sal (frame, &sal); | |
c906108c | 527 | |
0faf0076 AC |
528 | location_print = (print_what == LOCATION |
529 | || print_what == LOC_AND_ADDRESS | |
530 | || print_what == SRC_AND_LOC); | |
c5394b80 JM |
531 | |
532 | if (location_print || !sal.symtab) | |
033a42c2 | 533 | print_frame (frame, print_level, print_what, print_args, sal); |
c5394b80 | 534 | |
0faf0076 | 535 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
0378c332 | 536 | |
30c33a9f HZ |
537 | /* If disassemble-next-line is set to auto or on and doesn't have |
538 | the line debug messages for $pc, output the next instruction. */ | |
539 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO | |
540 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
541 | && source_print && !sal.symtab) | |
13274fc3 UW |
542 | do_gdb_disassembly (get_frame_arch (frame), 1, |
543 | get_frame_pc (frame), get_frame_pc (frame) + 1); | |
30c33a9f | 544 | |
c5394b80 JM |
545 | if (source_print && sal.symtab) |
546 | { | |
547 | int done = 0; | |
0faf0076 | 548 | int mid_statement = ((print_what == SRC_LINE) |
edb3359d | 549 | && frame_show_address (frame, sal)); |
c5394b80 JM |
550 | |
551 | if (annotation_level) | |
552 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
033a42c2 | 553 | get_frame_pc (frame)); |
c5394b80 JM |
554 | if (!done) |
555 | { | |
9a4105ab | 556 | if (deprecated_print_frame_info_listing_hook) |
cbd3c883 MS |
557 | deprecated_print_frame_info_listing_hook (sal.symtab, |
558 | sal.line, | |
559 | sal.line + 1, 0); | |
ba4bbdcb | 560 | else |
c5394b80 | 561 | { |
79a45b7d | 562 | struct value_print_options opts; |
433759f7 | 563 | |
79a45b7d | 564 | get_user_print_options (&opts); |
ba4bbdcb | 565 | /* We used to do this earlier, but that is clearly |
c378eb4e | 566 | wrong. This function is used by many different |
ba4bbdcb KS |
567 | parts of gdb, including normal_stop in infrun.c, |
568 | which uses this to print out the current PC | |
569 | when we stepi/nexti into the middle of a source | |
c378eb4e MS |
570 | line. Only the command line really wants this |
571 | behavior. Other UIs probably would like the | |
cbd3c883 | 572 | ability to decide for themselves if it is desired. */ |
79a45b7d | 573 | if (opts.addressprint && mid_statement) |
ba4bbdcb | 574 | { |
5af949e3 UW |
575 | ui_out_field_core_addr (uiout, "addr", |
576 | gdbarch, get_frame_pc (frame)); | |
ba4bbdcb | 577 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
578 | } |
579 | ||
580 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 581 | } |
c5394b80 | 582 | } |
30c33a9f HZ |
583 | |
584 | /* If disassemble-next-line is set to on and there is line debug | |
585 | messages, output assembly codes for next line. */ | |
586 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) | |
2b28d209 | 587 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
c5394b80 JM |
588 | } |
589 | ||
0faf0076 | 590 | if (print_what != LOCATION) |
e3eebbd7 PA |
591 | { |
592 | CORE_ADDR pc; | |
593 | ||
594 | if (get_frame_pc_if_available (frame, &pc)) | |
595 | set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line); | |
596 | else | |
597 | set_default_breakpoint (0, 0, 0, 0, 0); | |
598 | } | |
c5394b80 JM |
599 | |
600 | annotate_frame_end (); | |
601 | ||
602 | gdb_flush (gdb_stdout); | |
603 | } | |
604 | ||
e9e07ba6 JK |
605 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
606 | corresponding to FRAME. */ | |
607 | ||
f8f6f20b TJB |
608 | void |
609 | find_frame_funname (struct frame_info *frame, char **funname, | |
e9e07ba6 | 610 | enum language *funlang, struct symbol **funcp) |
c5394b80 JM |
611 | { |
612 | struct symbol *func; | |
8b93c638 | 613 | |
f8f6f20b TJB |
614 | *funname = NULL; |
615 | *funlang = language_unknown; | |
e9e07ba6 JK |
616 | if (funcp) |
617 | *funcp = NULL; | |
c5394b80 | 618 | |
edb3359d | 619 | func = get_frame_function (frame); |
c906108c SS |
620 | if (func) |
621 | { | |
622 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
623 | function (when we are in the first function in a file which |
624 | is compiled without debugging symbols, the previous function | |
625 | is compiled with debugging symbols, and the "foo.o" symbol | |
033a42c2 MK |
626 | that is supposed to tell us where the file with debugging |
627 | symbols ends has been truncated by ar because it is longer | |
628 | than 15 characters). This also occurs if the user uses asm() | |
629 | to create a function but not stabs for it (in a file compiled | |
630 | with -g). | |
c5aa993b JM |
631 | |
632 | So look in the minimal symbol tables as well, and if it comes | |
633 | up with a larger address for the function use that instead. | |
033a42c2 MK |
634 | I don't think this can ever cause any problems; there |
635 | shouldn't be any minimal symbols in the middle of a function; | |
636 | if this is ever changed many parts of GDB will need to be | |
637 | changed (and we'll create a find_pc_minimal_function or some | |
638 | such). */ | |
639 | ||
edb3359d DJ |
640 | struct minimal_symbol *msymbol = NULL; |
641 | ||
642 | /* Don't attempt to do this for inlined functions, which do not | |
643 | have a corresponding minimal symbol. */ | |
644 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) | |
645 | msymbol | |
646 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); | |
c906108c | 647 | |
c906108c | 648 | if (msymbol != NULL |
c5aa993b | 649 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
650 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
651 | { | |
c906108c SS |
652 | /* We also don't know anything about the function besides |
653 | its address and name. */ | |
654 | func = 0; | |
f8f6f20b TJB |
655 | *funname = SYMBOL_PRINT_NAME (msymbol); |
656 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
657 | } |
658 | else | |
659 | { | |
f8f6f20b TJB |
660 | *funname = SYMBOL_PRINT_NAME (func); |
661 | *funlang = SYMBOL_LANGUAGE (func); | |
e9e07ba6 JK |
662 | if (funcp) |
663 | *funcp = func; | |
f8f6f20b | 664 | if (*funlang == language_cplus) |
c5aa993b | 665 | { |
033a42c2 MK |
666 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
667 | to display the demangled name that we already have | |
668 | stored in the symbol table, but we stored a version | |
669 | with DMGL_PARAMS turned on, and here we don't want to | |
3567439c | 670 | display parameters. So remove the parameters. */ |
f8f6f20b | 671 | char *func_only = cp_remove_params (*funname); |
433759f7 | 672 | |
3567439c DJ |
673 | if (func_only) |
674 | { | |
f8f6f20b | 675 | *funname = func_only; |
3567439c DJ |
676 | make_cleanup (xfree, func_only); |
677 | } | |
c5aa993b | 678 | } |
c906108c SS |
679 | } |
680 | } | |
681 | else | |
682 | { | |
e3eebbd7 PA |
683 | struct minimal_symbol *msymbol; |
684 | CORE_ADDR pc; | |
033a42c2 | 685 | |
e3eebbd7 PA |
686 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
687 | return; | |
688 | ||
689 | msymbol = lookup_minimal_symbol_by_pc (pc); | |
c906108c SS |
690 | if (msymbol != NULL) |
691 | { | |
f8f6f20b TJB |
692 | *funname = SYMBOL_PRINT_NAME (msymbol); |
693 | *funlang = SYMBOL_LANGUAGE (msymbol); | |
c906108c SS |
694 | } |
695 | } | |
f8f6f20b TJB |
696 | } |
697 | ||
698 | static void | |
699 | print_frame (struct frame_info *frame, int print_level, | |
700 | enum print_what print_what, int print_args, | |
701 | struct symtab_and_line sal) | |
702 | { | |
5af949e3 | 703 | struct gdbarch *gdbarch = get_frame_arch (frame); |
79a45e25 | 704 | struct ui_out *uiout = current_uiout; |
f8f6f20b TJB |
705 | char *funname = NULL; |
706 | enum language funlang = language_unknown; | |
707 | struct ui_stream *stb; | |
708 | struct cleanup *old_chain, *list_chain; | |
709 | struct value_print_options opts; | |
e9e07ba6 | 710 | struct symbol *func; |
e3eebbd7 PA |
711 | CORE_ADDR pc = 0; |
712 | int pc_p; | |
713 | ||
714 | pc_p = get_frame_pc_if_available (frame, &pc); | |
f8f6f20b TJB |
715 | |
716 | stb = ui_out_stream_new (uiout); | |
717 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
718 | ||
e9e07ba6 | 719 | find_frame_funname (frame, &funname, &funlang, &func); |
c906108c | 720 | |
033a42c2 | 721 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
e3eebbd7 | 722 | gdbarch, pc); |
c5394b80 | 723 | |
666547aa | 724 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 | 725 | |
0faf0076 | 726 | if (print_level) |
8b93c638 | 727 | { |
8b93c638 | 728 | ui_out_text (uiout, "#"); |
0faf0076 | 729 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
033a42c2 | 730 | frame_relative_level (frame)); |
8b93c638 | 731 | } |
79a45b7d TT |
732 | get_user_print_options (&opts); |
733 | if (opts.addressprint) | |
e3eebbd7 PA |
734 | if (!sal.symtab |
735 | || frame_show_address (frame, sal) | |
0faf0076 | 736 | || print_what == LOC_AND_ADDRESS) |
c5394b80 JM |
737 | { |
738 | annotate_frame_address (); | |
e3eebbd7 PA |
739 | if (pc_p) |
740 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); | |
741 | else | |
742 | ui_out_field_string (uiout, "addr", "<unavailable>"); | |
8b93c638 JM |
743 | annotate_frame_address_end (); |
744 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
745 | } |
746 | annotate_frame_function_name (); | |
033a42c2 MK |
747 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
748 | funlang, DMGL_ANSI); | |
8b93c638 JM |
749 | ui_out_field_stream (uiout, "func", stb); |
750 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
751 | annotate_frame_args (); |
752 | ||
8b93c638 | 753 | ui_out_text (uiout, " ("); |
0faf0076 | 754 | if (print_args) |
c906108c | 755 | { |
311b5970 JK |
756 | struct gdbarch *gdbarch = get_frame_arch (frame); |
757 | int numargs; | |
d493eb33 | 758 | struct cleanup *args_list_chain; |
311b5970 | 759 | volatile struct gdb_exception e; |
433759f7 | 760 | |
311b5970 JK |
761 | if (gdbarch_frame_num_args_p (gdbarch)) |
762 | { | |
763 | numargs = gdbarch_frame_num_args (gdbarch, frame); | |
764 | gdb_assert (numargs >= 0); | |
765 | } | |
766 | else | |
767 | numargs = -1; | |
768 | ||
68c81b54 | 769 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
311b5970 JK |
770 | TRY_CATCH (e, RETURN_MASK_ERROR) |
771 | { | |
772 | print_frame_args (func, frame, numargs, gdb_stdout); | |
773 | } | |
c378eb4e | 774 | /* FIXME: ARGS must be a list. If one argument is a string it |
033a42c2 | 775 | will have " that will not be properly escaped. */ |
666547aa | 776 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 777 | do_cleanups (args_list_chain); |
c5394b80 JM |
778 | QUIT; |
779 | } | |
8b93c638 | 780 | ui_out_text (uiout, ")"); |
c5394b80 JM |
781 | if (sal.symtab && sal.symtab->filename) |
782 | { | |
783 | annotate_frame_source_begin (); | |
8b93c638 JM |
784 | ui_out_wrap_hint (uiout, " "); |
785 | ui_out_text (uiout, " at "); | |
786 | annotate_frame_source_file (); | |
787 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
76ff342d DJ |
788 | if (ui_out_is_mi_like_p (uiout)) |
789 | { | |
790 | const char *fullname = symtab_to_fullname (sal.symtab); | |
433759f7 | 791 | |
76ff342d DJ |
792 | if (fullname != NULL) |
793 | ui_out_field_string (uiout, "fullname", fullname); | |
794 | } | |
8b93c638 JM |
795 | annotate_frame_source_file_end (); |
796 | ui_out_text (uiout, ":"); | |
797 | annotate_frame_source_line (); | |
798 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
799 | annotate_frame_source_end (); |
800 | } | |
c906108c | 801 | |
e3eebbd7 | 802 | if (pc_p && (!funname || (!sal.symtab || !sal.symtab->filename))) |
c906108c | 803 | { |
a77053c2 | 804 | #ifdef PC_SOLIB |
033a42c2 | 805 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
a77053c2 | 806 | #else |
6c95b8df PA |
807 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
808 | get_frame_pc (frame)); | |
a77053c2 | 809 | #endif |
c5394b80 | 810 | if (lib) |
c906108c | 811 | { |
c5394b80 | 812 | annotate_frame_where (); |
8b93c638 JM |
813 | ui_out_wrap_hint (uiout, " "); |
814 | ui_out_text (uiout, " from "); | |
815 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 816 | } |
c906108c | 817 | } |
e514a9d6 | 818 | |
666547aa | 819 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 820 | do_cleanups (list_chain); |
8b93c638 JM |
821 | ui_out_text (uiout, "\n"); |
822 | do_cleanups (old_chain); | |
c906108c SS |
823 | } |
824 | \f | |
c5aa993b | 825 | |
033a42c2 MK |
826 | /* Read a frame specification in whatever the appropriate format is |
827 | from FRAME_EXP. Call error(), printing MESSAGE, if the | |
828 | specification is in any way invalid (so this function never returns | |
829 | NULL). When SEPECTED_P is non-NULL set its target to indicate that | |
830 | the default selected frame was used. */ | |
c906108c | 831 | |
1c8831c5 AC |
832 | static struct frame_info * |
833 | parse_frame_specification_1 (const char *frame_exp, const char *message, | |
834 | int *selected_frame_p) | |
c906108c | 835 | { |
1c8831c5 AC |
836 | int numargs; |
837 | struct value *args[4]; | |
838 | CORE_ADDR addrs[ARRAY_SIZE (args)]; | |
c5aa993b | 839 | |
1c8831c5 AC |
840 | if (frame_exp == NULL) |
841 | numargs = 0; | |
842 | else | |
c906108c | 843 | { |
1c8831c5 AC |
844 | numargs = 0; |
845 | while (1) | |
c906108c | 846 | { |
1c8831c5 AC |
847 | char *addr_string; |
848 | struct cleanup *cleanup; | |
849 | const char *p; | |
850 | ||
851 | /* Skip leading white space, bail of EOL. */ | |
852 | while (isspace (*frame_exp)) | |
853 | frame_exp++; | |
854 | if (!*frame_exp) | |
855 | break; | |
c906108c | 856 | |
1c8831c5 AC |
857 | /* Parse the argument, extract it, save it. */ |
858 | for (p = frame_exp; | |
859 | *p && !isspace (*p); | |
860 | p++); | |
861 | addr_string = savestring (frame_exp, p - frame_exp); | |
c906108c | 862 | frame_exp = p; |
1c8831c5 AC |
863 | cleanup = make_cleanup (xfree, addr_string); |
864 | ||
865 | /* NOTE: Parse and evaluate expression, but do not use | |
866 | functions such as parse_and_eval_long or | |
867 | parse_and_eval_address to also extract the value. | |
868 | Instead value_as_long and value_as_address are used. | |
869 | This avoids problems with expressions that contain | |
870 | side-effects. */ | |
871 | if (numargs >= ARRAY_SIZE (args)) | |
8a3fe4f8 | 872 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
873 | args[numargs++] = parse_and_eval (addr_string); |
874 | ||
875 | do_cleanups (cleanup); | |
c906108c SS |
876 | } |
877 | } | |
878 | ||
1c8831c5 AC |
879 | /* If no args, default to the selected frame. */ |
880 | if (numargs == 0) | |
c906108c | 881 | { |
1c8831c5 AC |
882 | if (selected_frame_p != NULL) |
883 | (*selected_frame_p) = 1; | |
884 | return get_selected_frame (message); | |
885 | } | |
c906108c | 886 | |
1c8831c5 AC |
887 | /* None of the remaining use the selected frame. */ |
888 | if (selected_frame_p != NULL) | |
98f276a0 | 889 | (*selected_frame_p) = 0; |
c906108c | 890 | |
1c8831c5 AC |
891 | /* Assume the single arg[0] is an integer, and try using that to |
892 | select a frame relative to current. */ | |
893 | if (numargs == 1) | |
894 | { | |
895 | struct frame_info *fid; | |
896 | int level = value_as_long (args[0]); | |
433759f7 | 897 | |
1c8831c5 AC |
898 | fid = find_relative_frame (get_current_frame (), &level); |
899 | if (level == 0) | |
c378eb4e | 900 | /* find_relative_frame was successful. */ |
1c8831c5 AC |
901 | return fid; |
902 | } | |
c906108c | 903 | |
1c8831c5 AC |
904 | /* Convert each value into a corresponding address. */ |
905 | { | |
906 | int i; | |
433759f7 | 907 | |
1c8831c5 | 908 | for (i = 0; i < numargs; i++) |
1e275f79 | 909 | addrs[i] = value_as_address (args[i]); |
1c8831c5 | 910 | } |
c5aa993b | 911 | |
1c8831c5 AC |
912 | /* Assume that the single arg[0] is an address, use that to identify |
913 | a frame with a matching ID. Should this also accept stack/pc or | |
914 | stack/pc/special. */ | |
915 | if (numargs == 1) | |
916 | { | |
917 | struct frame_id id = frame_id_build_wild (addrs[0]); | |
918 | struct frame_info *fid; | |
919 | ||
1c8831c5 AC |
920 | /* If (s)he specifies the frame with an address, he deserves |
921 | what (s)he gets. Still, give the highest one that matches. | |
922 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't | |
923 | know). */ | |
924 | for (fid = get_current_frame (); | |
925 | fid != NULL; | |
926 | fid = get_prev_frame (fid)) | |
927 | { | |
928 | if (frame_id_eq (id, get_frame_id (fid))) | |
929 | { | |
c7ce8faa DJ |
930 | struct frame_info *prev_frame; |
931 | ||
932 | while (1) | |
933 | { | |
934 | prev_frame = get_prev_frame (fid); | |
935 | if (!prev_frame | |
936 | || !frame_id_eq (id, get_frame_id (prev_frame))) | |
937 | break; | |
938 | fid = prev_frame; | |
939 | } | |
1c8831c5 AC |
940 | return fid; |
941 | } | |
942 | } | |
c906108c SS |
943 | } |
944 | ||
1c8831c5 AC |
945 | /* We couldn't identify the frame as an existing frame, but |
946 | perhaps we can create one with a single argument. */ | |
1c8831c5 AC |
947 | if (numargs == 1) |
948 | return create_new_frame (addrs[0], 0); | |
cd65c8f6 AC |
949 | else if (numargs == 2) |
950 | return create_new_frame (addrs[0], addrs[1]); | |
951 | else | |
8a3fe4f8 | 952 | error (_("Too many args in frame specification")); |
1c8831c5 AC |
953 | } |
954 | ||
9c833c82 | 955 | static struct frame_info * |
1c8831c5 AC |
956 | parse_frame_specification (char *frame_exp) |
957 | { | |
958 | return parse_frame_specification_1 (frame_exp, NULL, NULL); | |
c906108c SS |
959 | } |
960 | ||
033a42c2 MK |
961 | /* Print verbosely the selected frame or the frame at address |
962 | ADDR_EXP. Absolutely all information in the frame is printed. */ | |
c906108c SS |
963 | |
964 | static void | |
fba45db2 | 965 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
966 | { |
967 | struct frame_info *fi; | |
968 | struct symtab_and_line sal; | |
969 | struct symbol *func; | |
970 | struct symtab *s; | |
971 | struct frame_info *calling_frame_info; | |
167e4384 | 972 | int numregs; |
c906108c SS |
973 | char *funname = 0; |
974 | enum language funlang = language_unknown; | |
82de1e5b | 975 | const char *pc_regname; |
1c8831c5 | 976 | int selected_frame_p; |
7500260a | 977 | struct gdbarch *gdbarch; |
3567439c | 978 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
008f8f2e PA |
979 | CORE_ADDR frame_pc; |
980 | int frame_pc_p; | |
981 | CORE_ADDR caller_pc; | |
c906108c | 982 | |
1c8831c5 | 983 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
12368003 | 984 | gdbarch = get_frame_arch (fi); |
c906108c | 985 | |
82de1e5b AC |
986 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
987 | is not a good name. */ | |
12368003 | 988 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 989 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
82de1e5b AC |
990 | easily not match that of the internal value returned by |
991 | get_frame_pc(). */ | |
12368003 | 992 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
82de1e5b | 993 | else |
3e8c568d | 994 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
82de1e5b AC |
995 | architectures will often have a hardware register called "pc", |
996 | and that register's value, again, can easily not match | |
997 | get_frame_pc(). */ | |
998 | pc_regname = "pc"; | |
999 | ||
008f8f2e | 1000 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
1058bca7 | 1001 | find_frame_sal (fi, &sal); |
c906108c | 1002 | func = get_frame_function (fi); |
008f8f2e | 1003 | s = sal.symtab; |
c906108c SS |
1004 | if (func) |
1005 | { | |
3567439c | 1006 | funname = SYMBOL_PRINT_NAME (func); |
c5aa993b JM |
1007 | funlang = SYMBOL_LANGUAGE (func); |
1008 | if (funlang == language_cplus) | |
1009 | { | |
3567439c DJ |
1010 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
1011 | to display the demangled name that we already have | |
1012 | stored in the symbol table, but we stored a version | |
1013 | with DMGL_PARAMS turned on, and here we don't want to | |
1014 | display parameters. So remove the parameters. */ | |
1015 | char *func_only = cp_remove_params (funname); | |
433759f7 | 1016 | |
3567439c DJ |
1017 | if (func_only) |
1018 | { | |
1019 | funname = func_only; | |
1020 | make_cleanup (xfree, func_only); | |
1021 | } | |
c5aa993b | 1022 | } |
c906108c | 1023 | } |
008f8f2e | 1024 | else if (frame_pc_p) |
c906108c | 1025 | { |
033a42c2 MK |
1026 | struct minimal_symbol *msymbol; |
1027 | ||
008f8f2e | 1028 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
c906108c SS |
1029 | if (msymbol != NULL) |
1030 | { | |
3567439c | 1031 | funname = SYMBOL_PRINT_NAME (msymbol); |
c906108c SS |
1032 | funlang = SYMBOL_LANGUAGE (msymbol); |
1033 | } | |
1034 | } | |
1035 | calling_frame_info = get_prev_frame (fi); | |
1036 | ||
1c8831c5 | 1037 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
c906108c | 1038 | { |
a3f17187 | 1039 | printf_filtered (_("Stack level %d, frame at "), |
1c8831c5 | 1040 | frame_relative_level (fi)); |
c906108c SS |
1041 | } |
1042 | else | |
1043 | { | |
a3f17187 | 1044 | printf_filtered (_("Stack frame at ")); |
c906108c | 1045 | } |
5af949e3 | 1046 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
9c833c82 | 1047 | printf_filtered (":\n"); |
82de1e5b | 1048 | printf_filtered (" %s = ", pc_regname); |
008f8f2e PA |
1049 | if (frame_pc_p) |
1050 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); | |
1051 | else | |
1052 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1053 | |
1054 | wrap_here (" "); | |
1055 | if (funname) | |
1056 | { | |
1057 | printf_filtered (" in "); | |
1058 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
1059 | DMGL_ANSI | DMGL_PARAMS); | |
1060 | } | |
1061 | wrap_here (" "); | |
1062 | if (sal.symtab) | |
1063 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
1064 | puts_filtered ("; "); | |
1065 | wrap_here (" "); | |
82de1e5b | 1066 | printf_filtered ("saved %s ", pc_regname); |
008f8f2e PA |
1067 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
1068 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); | |
1069 | else | |
1070 | fputs_filtered ("<unavailable>", gdb_stdout); | |
c906108c SS |
1071 | printf_filtered ("\n"); |
1072 | ||
55feb689 DJ |
1073 | if (calling_frame_info == NULL) |
1074 | { | |
1075 | enum unwind_stop_reason reason; | |
1076 | ||
1077 | reason = get_frame_unwind_stop_reason (fi); | |
1078 | if (reason != UNWIND_NO_REASON) | |
1079 | printf_filtered (_(" Outermost frame: %s\n"), | |
1080 | frame_stop_reason_string (reason)); | |
1081 | } | |
edb3359d DJ |
1082 | else if (get_frame_type (fi) == INLINE_FRAME) |
1083 | printf_filtered (" inlined into frame %d", | |
1084 | frame_relative_level (get_prev_frame (fi))); | |
1085 | else | |
c906108c SS |
1086 | { |
1087 | printf_filtered (" called by frame at "); | |
5af949e3 | 1088 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
ed49a04f | 1089 | gdb_stdout); |
c906108c | 1090 | } |
75e3c1f9 | 1091 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
1092 | puts_filtered (","); |
1093 | wrap_here (" "); | |
75e3c1f9 | 1094 | if (get_next_frame (fi)) |
c906108c SS |
1095 | { |
1096 | printf_filtered (" caller of frame at "); | |
5af949e3 | 1097 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
ed49a04f | 1098 | gdb_stdout); |
c906108c | 1099 | } |
75e3c1f9 | 1100 | if (get_next_frame (fi) || calling_frame_info) |
c906108c | 1101 | puts_filtered ("\n"); |
55feb689 | 1102 | |
c906108c | 1103 | if (s) |
1058bca7 AC |
1104 | printf_filtered (" source language %s.\n", |
1105 | language_str (s->language)); | |
c906108c | 1106 | |
c906108c SS |
1107 | { |
1108 | /* Address of the argument list for this frame, or 0. */ | |
da62e633 | 1109 | CORE_ADDR arg_list = get_frame_args_address (fi); |
c906108c SS |
1110 | /* Number of args for this frame, or -1 if unknown. */ |
1111 | int numargs; | |
1112 | ||
1113 | if (arg_list == 0) | |
1114 | printf_filtered (" Arglist at unknown address.\n"); | |
1115 | else | |
1116 | { | |
1117 | printf_filtered (" Arglist at "); | |
5af949e3 | 1118 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1119 | printf_filtered (","); |
1120 | ||
7500260a | 1121 | if (!gdbarch_frame_num_args_p (gdbarch)) |
983a287a AC |
1122 | { |
1123 | numargs = -1; | |
1124 | puts_filtered (" args: "); | |
1125 | } | |
c906108c | 1126 | else |
983a287a | 1127 | { |
7500260a | 1128 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
983a287a AC |
1129 | gdb_assert (numargs >= 0); |
1130 | if (numargs == 0) | |
1131 | puts_filtered (" no args."); | |
1132 | else if (numargs == 1) | |
1133 | puts_filtered (" 1 arg: "); | |
1134 | else | |
1135 | printf_filtered (" %d args: ", numargs); | |
1136 | } | |
c906108c SS |
1137 | print_frame_args (func, fi, numargs, gdb_stdout); |
1138 | puts_filtered ("\n"); | |
1139 | } | |
1140 | } | |
1141 | { | |
1142 | /* Address of the local variables for this frame, or 0. */ | |
da62e633 | 1143 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
c906108c SS |
1144 | |
1145 | if (arg_list == 0) | |
1146 | printf_filtered (" Locals at unknown address,"); | |
1147 | else | |
1148 | { | |
1149 | printf_filtered (" Locals at "); | |
5af949e3 | 1150 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
c906108c SS |
1151 | printf_filtered (","); |
1152 | } | |
1153 | } | |
1154 | ||
4f460812 AC |
1155 | /* Print as much information as possible on the location of all the |
1156 | registers. */ | |
1157 | { | |
1158 | enum lval_type lval; | |
1159 | int optimized; | |
0fdb4f18 | 1160 | int unavailable; |
4f460812 AC |
1161 | CORE_ADDR addr; |
1162 | int realnum; | |
1163 | int count; | |
1164 | int i; | |
1165 | int need_nl = 1; | |
1166 | ||
1167 | /* The sp is special; what's displayed isn't the save address, but | |
1168 | the value of the previous frame's sp. This is a legacy thing, | |
1169 | at one stage the frame cached the previous frame's SP instead | |
1170 | of its address, hence it was easiest to just display the cached | |
1171 | value. */ | |
7500260a | 1172 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
4f460812 AC |
1173 | { |
1174 | /* Find out the location of the saved stack pointer with out | |
1175 | actually evaluating it. */ | |
7500260a | 1176 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1177 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1178 | &realnum, NULL); |
0fdb4f18 | 1179 | if (!optimized && !unavailable && lval == not_lval) |
c906108c | 1180 | { |
e17a4113 UW |
1181 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1182 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); | |
10c42a71 | 1183 | gdb_byte value[MAX_REGISTER_SIZE]; |
4f460812 | 1184 | CORE_ADDR sp; |
433759f7 | 1185 | |
7500260a | 1186 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
0fdb4f18 | 1187 | &optimized, &unavailable, &lval, &addr, |
4f460812 | 1188 | &realnum, value); |
af1342ab AC |
1189 | /* NOTE: cagney/2003-05-22: This is assuming that the |
1190 | stack pointer was packed as an unsigned integer. That | |
1191 | may or may not be valid. */ | |
e17a4113 | 1192 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
4f460812 | 1193 | printf_filtered (" Previous frame's sp is "); |
5af949e3 | 1194 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
4f460812 AC |
1195 | printf_filtered ("\n"); |
1196 | need_nl = 0; | |
c906108c | 1197 | } |
0fdb4f18 | 1198 | else if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1199 | { |
1200 | printf_filtered (" Previous frame's sp at "); | |
5af949e3 | 1201 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1202 | printf_filtered ("\n"); |
1203 | need_nl = 0; | |
1204 | } | |
0fdb4f18 | 1205 | else if (!optimized && !unavailable && lval == lval_register) |
4f460812 AC |
1206 | { |
1207 | printf_filtered (" Previous frame's sp in %s\n", | |
7500260a | 1208 | gdbarch_register_name (gdbarch, realnum)); |
4f460812 AC |
1209 | need_nl = 0; |
1210 | } | |
1211 | /* else keep quiet. */ | |
1212 | } | |
1213 | ||
1214 | count = 0; | |
7500260a UW |
1215 | numregs = gdbarch_num_regs (gdbarch) |
1216 | + gdbarch_num_pseudo_regs (gdbarch); | |
4f460812 | 1217 | for (i = 0; i < numregs; i++) |
7500260a UW |
1218 | if (i != gdbarch_sp_regnum (gdbarch) |
1219 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) | |
4f460812 AC |
1220 | { |
1221 | /* Find out the location of the saved register without | |
1222 | fetching the corresponding value. */ | |
0fdb4f18 PA |
1223 | frame_register_unwind (fi, i, &optimized, &unavailable, |
1224 | &lval, &addr, &realnum, NULL); | |
4f460812 AC |
1225 | /* For moment, only display registers that were saved on the |
1226 | stack. */ | |
0fdb4f18 | 1227 | if (!optimized && !unavailable && lval == lval_memory) |
4f460812 AC |
1228 | { |
1229 | if (count == 0) | |
1230 | puts_filtered (" Saved registers:\n "); | |
1231 | else | |
1232 | puts_filtered (","); | |
1233 | wrap_here (" "); | |
c9f4d572 | 1234 | printf_filtered (" %s at ", |
7500260a | 1235 | gdbarch_register_name (gdbarch, i)); |
5af949e3 | 1236 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
4f460812 AC |
1237 | count++; |
1238 | } | |
1239 | } | |
1240 | if (count || need_nl) | |
c906108c | 1241 | puts_filtered ("\n"); |
4f460812 | 1242 | } |
3567439c DJ |
1243 | |
1244 | do_cleanups (back_to); | |
c906108c SS |
1245 | } |
1246 | ||
033a42c2 MK |
1247 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
1248 | frames. */ | |
c906108c SS |
1249 | |
1250 | static void | |
fba45db2 | 1251 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
1252 | { |
1253 | struct frame_info *fi; | |
52f0bd74 AC |
1254 | int count; |
1255 | int i; | |
1256 | struct frame_info *trailing; | |
1257 | int trailing_level; | |
c906108c SS |
1258 | |
1259 | if (!target_has_stack) | |
8a3fe4f8 | 1260 | error (_("No stack.")); |
c906108c | 1261 | |
033a42c2 MK |
1262 | /* The following code must do two things. First, it must set the |
1263 | variable TRAILING to the frame from which we should start | |
c906108c SS |
1264 | printing. Second, it must set the variable count to the number |
1265 | of frames which we should print, or -1 if all of them. */ | |
1266 | trailing = get_current_frame (); | |
d082b2bb | 1267 | |
c906108c SS |
1268 | trailing_level = 0; |
1269 | if (count_exp) | |
1270 | { | |
bb518678 | 1271 | count = parse_and_eval_long (count_exp); |
c906108c SS |
1272 | if (count < 0) |
1273 | { | |
1274 | struct frame_info *current; | |
1275 | ||
1276 | count = -count; | |
1277 | ||
1278 | current = trailing; | |
1279 | while (current && count--) | |
1280 | { | |
1281 | QUIT; | |
1282 | current = get_prev_frame (current); | |
1283 | } | |
c5aa993b | 1284 | |
033a42c2 MK |
1285 | /* Will stop when CURRENT reaches the top of the stack. |
1286 | TRAILING will be COUNT below it. */ | |
c906108c SS |
1287 | while (current) |
1288 | { | |
1289 | QUIT; | |
1290 | trailing = get_prev_frame (trailing); | |
1291 | current = get_prev_frame (current); | |
1292 | trailing_level++; | |
1293 | } | |
c5aa993b | 1294 | |
c906108c SS |
1295 | count = -1; |
1296 | } | |
1297 | } | |
1298 | else | |
1299 | count = -1; | |
1300 | ||
1301 | if (info_verbose) | |
1302 | { | |
033a42c2 MK |
1303 | /* Read in symbols for all of the frames. Need to do this in a |
1304 | separate pass so that "Reading in symbols for xxx" messages | |
1305 | don't screw up the appearance of the backtrace. Also if | |
1306 | people have strong opinions against reading symbols for | |
c5aa993b | 1307 | backtrace this may have to be an option. */ |
c906108c | 1308 | i = count; |
033a42c2 | 1309 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
c906108c | 1310 | { |
ccefe4c4 | 1311 | CORE_ADDR pc; |
433759f7 | 1312 | |
c906108c | 1313 | QUIT; |
ccefe4c4 TT |
1314 | pc = get_frame_address_in_block (fi); |
1315 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); | |
c906108c SS |
1316 | } |
1317 | } | |
1318 | ||
033a42c2 | 1319 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
c906108c SS |
1320 | { |
1321 | QUIT; | |
1322 | ||
1323 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
1324 | means further attempts to backtrace would fail (on the other |
1325 | hand, perhaps the code does or could be fixed to make sure | |
1326 | the frame->prev field gets set to NULL in that case). */ | |
0faf0076 | 1327 | print_frame_info (fi, 1, LOCATION, 1); |
c906108c | 1328 | if (show_locals) |
c5aa993b | 1329 | print_frame_local_vars (fi, 1, gdb_stdout); |
55feb689 DJ |
1330 | |
1331 | /* Save the last frame to check for error conditions. */ | |
1332 | trailing = fi; | |
c906108c SS |
1333 | } |
1334 | ||
1335 | /* If we've stopped before the end, mention that. */ | |
1336 | if (fi && from_tty) | |
a3f17187 | 1337 | printf_filtered (_("(More stack frames follow...)\n")); |
55feb689 DJ |
1338 | |
1339 | /* If we've run out of frames, and the reason appears to be an error | |
1340 | condition, print it. */ | |
1341 | if (fi == NULL && trailing != NULL) | |
1342 | { | |
1343 | enum unwind_stop_reason reason; | |
1344 | ||
1345 | reason = get_frame_unwind_stop_reason (trailing); | |
1346 | if (reason > UNWIND_FIRST_ERROR) | |
1347 | printf_filtered (_("Backtrace stopped: %s\n"), | |
1348 | frame_stop_reason_string (reason)); | |
1349 | } | |
c906108c SS |
1350 | } |
1351 | ||
1352 | static void | |
fba45db2 | 1353 | backtrace_command (char *arg, int from_tty) |
c906108c | 1354 | { |
5fe41fbf | 1355 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
033a42c2 | 1356 | int fulltrace_arg = -1, arglen = 0, argc = 0; |
c906108c | 1357 | |
033a42c2 | 1358 | if (arg) |
c906108c | 1359 | { |
033a42c2 | 1360 | char **argv; |
c906108c SS |
1361 | int i; |
1362 | ||
d1a41061 | 1363 | argv = gdb_buildargv (arg); |
5fe41fbf | 1364 | make_cleanup_freeargv (argv); |
c906108c | 1365 | argc = 0; |
033a42c2 | 1366 | for (i = 0; argv[i]; i++) |
c5aa993b | 1367 | { |
745b8ca0 | 1368 | unsigned int j; |
c5aa993b | 1369 | |
033a42c2 | 1370 | for (j = 0; j < strlen (argv[i]); j++) |
c5aa993b JM |
1371 | argv[i][j] = tolower (argv[i][j]); |
1372 | ||
033a42c2 MK |
1373 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
1374 | fulltrace_arg = argc; | |
c5aa993b JM |
1375 | else |
1376 | { | |
033a42c2 | 1377 | arglen += strlen (argv[i]); |
c5aa993b | 1378 | argc++; |
c5aa993b JM |
1379 | } |
1380 | } | |
033a42c2 MK |
1381 | arglen += argc; |
1382 | if (fulltrace_arg >= 0) | |
c5aa993b | 1383 | { |
033a42c2 | 1384 | if (arglen > 0) |
c5aa993b | 1385 | { |
033a42c2 | 1386 | arg = xmalloc (arglen + 1); |
b1d288d3 JK |
1387 | make_cleanup (xfree, arg); |
1388 | arg[0] = 0; | |
033a42c2 | 1389 | for (i = 0; i < (argc + 1); i++) |
c5aa993b | 1390 | { |
033a42c2 | 1391 | if (i != fulltrace_arg) |
c5aa993b | 1392 | { |
033a42c2 MK |
1393 | strcat (arg, argv[i]); |
1394 | strcat (arg, " "); | |
c5aa993b JM |
1395 | } |
1396 | } | |
1397 | } | |
1398 | else | |
033a42c2 | 1399 | arg = NULL; |
c5aa993b | 1400 | } |
c906108c SS |
1401 | } |
1402 | ||
b1d288d3 | 1403 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty); |
c906108c | 1404 | |
5fe41fbf | 1405 | do_cleanups (old_chain); |
c906108c SS |
1406 | } |
1407 | ||
1408 | static void | |
fba45db2 | 1409 | backtrace_full_command (char *arg, int from_tty) |
c906108c | 1410 | { |
b1d288d3 | 1411 | backtrace_command_1 (arg, 1 /* show_locals */, from_tty); |
c906108c | 1412 | } |
c906108c | 1413 | \f |
c5aa993b | 1414 | |
2c58c0a9 PA |
1415 | /* Iterate over the local variables of a block B, calling CB with |
1416 | CB_DATA. */ | |
c906108c | 1417 | |
2c58c0a9 PA |
1418 | static void |
1419 | iterate_over_block_locals (struct block *b, | |
1420 | iterate_over_block_arg_local_vars_cb cb, | |
1421 | void *cb_data) | |
c906108c | 1422 | { |
de4f826b | 1423 | struct dict_iterator iter; |
de4f826b | 1424 | struct symbol *sym; |
c906108c | 1425 | |
de4f826b | 1426 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1427 | { |
c906108c SS |
1428 | switch (SYMBOL_CLASS (sym)) |
1429 | { | |
1430 | case LOC_LOCAL: | |
1431 | case LOC_REGISTER: | |
1432 | case LOC_STATIC: | |
4c2df51b | 1433 | case LOC_COMPUTED: |
2a2d4dc3 AS |
1434 | if (SYMBOL_IS_ARGUMENT (sym)) |
1435 | break; | |
2c58c0a9 | 1436 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
c906108c SS |
1437 | break; |
1438 | ||
1439 | default: | |
1440 | /* Ignore symbols which are not locals. */ | |
1441 | break; | |
1442 | } | |
1443 | } | |
c906108c SS |
1444 | } |
1445 | ||
65c06092 | 1446 | |
c906108c SS |
1447 | /* Same, but print labels. */ |
1448 | ||
65c06092 JB |
1449 | #if 0 |
1450 | /* Commented out, as the code using this function has also been | |
1451 | commented out. FIXME:brobecker/2009-01-13: Find out why the code | |
1452 | was commented out in the first place. The discussion introducing | |
1453 | this change (2007-12-04: Support lexical blocks and function bodies | |
1454 | that occupy non-contiguous address ranges) did not explain why | |
1455 | this change was made. */ | |
c906108c | 1456 | static int |
5af949e3 UW |
1457 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
1458 | int *have_default, struct ui_file *stream) | |
c906108c | 1459 | { |
de4f826b | 1460 | struct dict_iterator iter; |
52f0bd74 AC |
1461 | struct symbol *sym; |
1462 | int values_printed = 0; | |
c906108c | 1463 | |
de4f826b | 1464 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1465 | { |
3567439c | 1466 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
c906108c SS |
1467 | { |
1468 | if (*have_default) | |
1469 | continue; | |
1470 | *have_default = 1; | |
1471 | } | |
1472 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1473 | { | |
1474 | struct symtab_and_line sal; | |
79a45b7d | 1475 | struct value_print_options opts; |
433759f7 | 1476 | |
c906108c SS |
1477 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
1478 | values_printed = 1; | |
de5ad195 | 1479 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
79a45b7d TT |
1480 | get_user_print_options (&opts); |
1481 | if (opts.addressprint) | |
c906108c SS |
1482 | { |
1483 | fprintf_filtered (stream, " "); | |
5af949e3 UW |
1484 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
1485 | stream); | |
c906108c SS |
1486 | } |
1487 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1488 | sal.symtab->filename, sal.line); | |
1489 | } | |
1490 | } | |
033a42c2 | 1491 | |
c906108c SS |
1492 | return values_printed; |
1493 | } | |
65c06092 | 1494 | #endif |
c906108c | 1495 | |
2c58c0a9 PA |
1496 | /* Iterate over all the local variables in block B, including all its |
1497 | superblocks, stopping when the top-level block is reached. */ | |
1498 | ||
1499 | void | |
1500 | iterate_over_block_local_vars (struct block *block, | |
1501 | iterate_over_block_arg_local_vars_cb cb, | |
1502 | void *cb_data) | |
1503 | { | |
1504 | while (block) | |
1505 | { | |
1506 | iterate_over_block_locals (block, cb, cb_data); | |
1507 | /* After handling the function's top-level block, stop. Don't | |
1508 | continue to its superblock, the block of per-file | |
1509 | symbols. */ | |
1510 | if (BLOCK_FUNCTION (block)) | |
1511 | break; | |
1512 | block = BLOCK_SUPERBLOCK (block); | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | /* Data to be passed around in the calls to the locals and args | |
1517 | iterators. */ | |
c906108c | 1518 | |
2c58c0a9 PA |
1519 | struct print_variable_and_value_data |
1520 | { | |
1521 | struct frame_info *frame; | |
1522 | int num_tabs; | |
1523 | struct ui_file *stream; | |
1524 | int values_printed; | |
1525 | }; | |
1526 | ||
c378eb4e | 1527 | /* The callback for the locals and args iterators. */ |
2c58c0a9 PA |
1528 | |
1529 | static void | |
1530 | do_print_variable_and_value (const char *print_name, | |
1531 | struct symbol *sym, | |
1532 | void *cb_data) | |
1533 | { | |
1534 | struct print_variable_and_value_data *p = cb_data; | |
1535 | ||
1536 | print_variable_and_value (print_name, sym, | |
1537 | p->frame, p->stream, p->num_tabs); | |
1538 | p->values_printed = 1; | |
1539 | } | |
c906108c SS |
1540 | |
1541 | static void | |
033a42c2 | 1542 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
aa1ee363 | 1543 | struct ui_file *stream) |
c906108c | 1544 | { |
2c58c0a9 PA |
1545 | struct print_variable_and_value_data cb_data; |
1546 | struct block *block; | |
1d4f5741 PA |
1547 | CORE_ADDR pc; |
1548 | ||
1549 | if (!get_frame_pc_if_available (frame, &pc)) | |
1550 | { | |
1551 | fprintf_filtered (stream, | |
1552 | _("PC unavailable, cannot determine locals.\n")); | |
1553 | return; | |
1554 | } | |
c906108c | 1555 | |
2c58c0a9 | 1556 | block = get_frame_block (frame, 0); |
c906108c SS |
1557 | if (block == 0) |
1558 | { | |
1559 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1560 | return; | |
1561 | } | |
c5aa993b | 1562 | |
2c58c0a9 PA |
1563 | cb_data.frame = frame; |
1564 | cb_data.num_tabs = 4 * num_tabs; | |
1565 | cb_data.stream = stream; | |
1566 | cb_data.values_printed = 0; | |
1567 | ||
1568 | iterate_over_block_local_vars (block, | |
1569 | do_print_variable_and_value, | |
1570 | &cb_data); | |
c906108c | 1571 | |
2c58c0a9 | 1572 | if (!cb_data.values_printed) |
033a42c2 | 1573 | fprintf_filtered (stream, _("No locals.\n")); |
c906108c SS |
1574 | } |
1575 | ||
1576 | /* Same, but print labels. */ | |
1577 | ||
1578 | static void | |
033a42c2 | 1579 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
aa1ee363 | 1580 | struct ui_file *stream) |
c906108c | 1581 | { |
801e3a5b JB |
1582 | #if 1 |
1583 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); | |
1584 | #else | |
52f0bd74 | 1585 | struct blockvector *bl; |
033a42c2 | 1586 | struct block *block = get_frame_block (frame, 0); |
5af949e3 | 1587 | struct gdbarch *gdbarch = get_frame_arch (frame); |
52f0bd74 | 1588 | int values_printed = 0; |
c906108c SS |
1589 | int index, have_default = 0; |
1590 | char *blocks_printed; | |
033a42c2 | 1591 | CORE_ADDR pc = get_frame_pc (frame); |
c906108c SS |
1592 | |
1593 | if (block == 0) | |
1594 | { | |
1595 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1596 | return; | |
1597 | } | |
1598 | ||
1599 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
033a42c2 | 1600 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
c906108c SS |
1601 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
1602 | ||
1603 | while (block != 0) | |
1604 | { | |
1605 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1606 | int last_index; | |
1607 | ||
1608 | if (bl != blockvector_for_pc (end, &index)) | |
8a3fe4f8 | 1609 | error (_("blockvector blotch")); |
c906108c | 1610 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
8a3fe4f8 | 1611 | error (_("blockvector botch")); |
c906108c SS |
1612 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
1613 | index += 1; | |
1614 | ||
1615 | /* Don't print out blocks that have gone by. */ | |
1616 | while (index < last_index | |
1617 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1618 | index++; | |
1619 | ||
1620 | while (index < last_index | |
1621 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1622 | { | |
1623 | if (blocks_printed[index] == 0) | |
1624 | { | |
5af949e3 UW |
1625 | if (print_block_frame_labels (gdbarch, |
1626 | BLOCKVECTOR_BLOCK (bl, index), | |
033a42c2 | 1627 | &have_default, stream)) |
c906108c SS |
1628 | values_printed = 1; |
1629 | blocks_printed[index] = 1; | |
1630 | } | |
1631 | index++; | |
1632 | } | |
1633 | if (have_default) | |
1634 | return; | |
1635 | if (values_printed && this_level_only) | |
1636 | return; | |
1637 | ||
033a42c2 | 1638 | /* After handling the function's top-level block, stop. Don't |
edb3359d DJ |
1639 | continue to its superblock, the block of per-file symbols. |
1640 | Also do not continue to the containing function of an inlined | |
1641 | function. */ | |
c906108c SS |
1642 | if (BLOCK_FUNCTION (block)) |
1643 | break; | |
1644 | block = BLOCK_SUPERBLOCK (block); | |
1645 | } | |
1646 | ||
1647 | if (!values_printed && !this_level_only) | |
033a42c2 | 1648 | fprintf_filtered (stream, _("No catches.\n")); |
801e3a5b | 1649 | #endif |
c906108c SS |
1650 | } |
1651 | ||
c906108c | 1652 | void |
fba45db2 | 1653 | locals_info (char *args, int from_tty) |
c906108c | 1654 | { |
033a42c2 | 1655 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1656 | 0, gdb_stdout); |
c906108c SS |
1657 | } |
1658 | ||
1659 | static void | |
fba45db2 | 1660 | catch_info (char *ignore, int from_tty) |
c906108c | 1661 | { |
dfdfb3ca JB |
1662 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
1663 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), | |
1664 | 0, gdb_stdout); | |
c906108c SS |
1665 | } |
1666 | ||
2c58c0a9 PA |
1667 | /* Iterate over all the argument variables in block B. |
1668 | ||
1669 | Returns 1 if any argument was walked; 0 otherwise. */ | |
1670 | ||
1671 | void | |
1672 | iterate_over_block_arg_vars (struct block *b, | |
1673 | iterate_over_block_arg_local_vars_cb cb, | |
1674 | void *cb_data) | |
c906108c | 1675 | { |
de4f826b | 1676 | struct dict_iterator iter; |
52f0bd74 | 1677 | struct symbol *sym, *sym2; |
c906108c | 1678 | |
de4f826b | 1679 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 1680 | { |
2a2d4dc3 AS |
1681 | /* Don't worry about things which aren't arguments. */ |
1682 | if (SYMBOL_IS_ARGUMENT (sym)) | |
c906108c | 1683 | { |
c906108c SS |
1684 | /* We have to look up the symbol because arguments can have |
1685 | two entries (one a parameter, one a local) and the one we | |
1686 | want is the local, which lookup_symbol will find for us. | |
1687 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1688 | small structure and gcc2 when the argument type is float | |
1689 | and it is passed as a double and converted to float by | |
1690 | the prologue (in the latter case the type of the LOC_ARG | |
1691 | symbol is double and the type of the LOC_LOCAL symbol is | |
1692 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1693 | are not combined in symbol-reading. */ | |
1694 | ||
3567439c | 1695 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
2570f2b7 | 1696 | b, VAR_DOMAIN, NULL); |
2c58c0a9 | 1697 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
c906108c SS |
1698 | } |
1699 | } | |
2c58c0a9 PA |
1700 | } |
1701 | ||
1702 | static void | |
1703 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) | |
1704 | { | |
1705 | struct print_variable_and_value_data cb_data; | |
1706 | struct symbol *func; | |
1d4f5741 PA |
1707 | CORE_ADDR pc; |
1708 | ||
1709 | if (!get_frame_pc_if_available (frame, &pc)) | |
1710 | { | |
1711 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); | |
1712 | return; | |
1713 | } | |
2c58c0a9 PA |
1714 | |
1715 | func = get_frame_function (frame); | |
1716 | if (func == NULL) | |
1717 | { | |
1718 | fprintf_filtered (stream, _("No symbol table info available.\n")); | |
1719 | return; | |
1720 | } | |
1721 | ||
1722 | cb_data.frame = frame; | |
1723 | cb_data.num_tabs = 0; | |
1724 | cb_data.stream = gdb_stdout; | |
1725 | cb_data.values_printed = 0; | |
1726 | ||
1727 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), | |
1728 | do_print_variable_and_value, &cb_data); | |
033a42c2 | 1729 | |
2c58c0a9 | 1730 | if (!cb_data.values_printed) |
033a42c2 | 1731 | fprintf_filtered (stream, _("No arguments.\n")); |
c906108c SS |
1732 | } |
1733 | ||
1734 | void | |
fba45db2 | 1735 | args_info (char *ignore, int from_tty) |
c906108c | 1736 | { |
033a42c2 | 1737 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
b04f3ab4 | 1738 | gdb_stdout); |
c906108c SS |
1739 | } |
1740 | ||
1741 | ||
1742 | static void | |
fba45db2 | 1743 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1744 | { |
c5aa993b JM |
1745 | args_info (ignore, from_tty); |
1746 | locals_info (ignore, from_tty); | |
c906108c | 1747 | } |
c906108c | 1748 | \f |
c5aa993b | 1749 | |
033a42c2 MK |
1750 | /* Select frame FRAME. Also print the stack frame and show the source |
1751 | if this is the tui version. */ | |
bedfa57b | 1752 | static void |
033a42c2 | 1753 | select_and_print_frame (struct frame_info *frame) |
c906108c | 1754 | { |
033a42c2 MK |
1755 | select_frame (frame); |
1756 | if (frame) | |
1757 | print_stack_frame (frame, 1, SRC_AND_LOC); | |
c906108c | 1758 | } |
c906108c | 1759 | \f |
c906108c | 1760 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1761 | Can return zero under various legitimate circumstances. |
1762 | ||
1763 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1764 | code address within the block returned. We use this to decide | |
1765 | which macros are in scope. */ | |
c906108c SS |
1766 | |
1767 | struct block * | |
ae767bfb | 1768 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c | 1769 | { |
d729566a | 1770 | if (!has_stack_frames ()) |
8ea051c5 PA |
1771 | return 0; |
1772 | ||
206415a3 | 1773 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
c906108c SS |
1774 | } |
1775 | ||
1776 | /* Find a frame a certain number of levels away from FRAME. | |
1777 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1778 | Positive means go to earlier frames (up); negative, the reverse. | |
1779 | The int that contains the number of levels is counted toward | |
1780 | zero as the frames for those levels are found. | |
1781 | If the top or bottom frame is reached, that frame is returned, | |
1782 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1783 | how much farther the original request asked to go. */ | |
1784 | ||
1785 | struct frame_info * | |
033a42c2 | 1786 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
c906108c | 1787 | { |
033a42c2 MK |
1788 | /* Going up is simple: just call get_prev_frame enough times or |
1789 | until the initial frame is reached. */ | |
c906108c SS |
1790 | while (*level_offset_ptr > 0) |
1791 | { | |
033a42c2 | 1792 | struct frame_info *prev = get_prev_frame (frame); |
433759f7 | 1793 | |
033a42c2 | 1794 | if (!prev) |
c906108c SS |
1795 | break; |
1796 | (*level_offset_ptr)--; | |
1797 | frame = prev; | |
1798 | } | |
033a42c2 | 1799 | |
c906108c | 1800 | /* Going down is just as simple. */ |
033a42c2 | 1801 | while (*level_offset_ptr < 0) |
c906108c | 1802 | { |
033a42c2 | 1803 | struct frame_info *next = get_next_frame (frame); |
433759f7 | 1804 | |
033a42c2 MK |
1805 | if (!next) |
1806 | break; | |
1807 | (*level_offset_ptr)++; | |
1808 | frame = next; | |
c906108c | 1809 | } |
033a42c2 | 1810 | |
c906108c SS |
1811 | return frame; |
1812 | } | |
1813 | ||
033a42c2 MK |
1814 | /* The "select_frame" command. With no argument this is a NOP. |
1815 | Select the frame at level LEVEL_EXP if it is a valid level. | |
1816 | Otherwise, treat LEVEL_EXP as an address expression and select it. | |
1817 | ||
1818 | See parse_frame_specification for more info on proper frame | |
1819 | expressions. */ | |
c906108c | 1820 | |
8b93c638 | 1821 | void |
fba45db2 | 1822 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1823 | { |
1c8831c5 | 1824 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
c906108c SS |
1825 | } |
1826 | ||
033a42c2 MK |
1827 | /* The "frame" command. With no argument, print the selected frame |
1828 | briefly. With an argument, behave like select_frame and then print | |
1829 | the selected frame. */ | |
c906108c | 1830 | |
033a42c2 | 1831 | static void |
fba45db2 | 1832 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1833 | { |
1834 | select_frame_command (level_exp, from_tty); | |
b04f3ab4 | 1835 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1836 | } |
1837 | ||
033a42c2 | 1838 | /* The XDB Compatibility command to print the current frame. */ |
c906108c | 1839 | |
7a292a7a | 1840 | static void |
fba45db2 | 1841 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1842 | { |
033a42c2 | 1843 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
7a292a7a | 1844 | } |
c906108c | 1845 | |
033a42c2 MK |
1846 | /* Select the frame up one or COUNT_EXP stack levels from the |
1847 | previously selected frame, and print it briefly. */ | |
c906108c | 1848 | |
c906108c | 1849 | static void |
fba45db2 | 1850 | up_silently_base (char *count_exp) |
c906108c | 1851 | { |
033a42c2 MK |
1852 | struct frame_info *frame; |
1853 | int count = 1; | |
1854 | ||
c906108c | 1855 | if (count_exp) |
bb518678 | 1856 | count = parse_and_eval_long (count_exp); |
c5aa993b | 1857 | |
033a42c2 MK |
1858 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1859 | if (count != 0 && count_exp == NULL) | |
8a3fe4f8 | 1860 | error (_("Initial frame selected; you cannot go up.")); |
033a42c2 | 1861 | select_frame (frame); |
c906108c SS |
1862 | } |
1863 | ||
1864 | static void | |
fba45db2 | 1865 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1866 | { |
c5aa993b | 1867 | up_silently_base (count_exp); |
c906108c SS |
1868 | } |
1869 | ||
1870 | static void | |
fba45db2 | 1871 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1872 | { |
1873 | up_silently_base (count_exp); | |
b04f3ab4 | 1874 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1875 | } |
1876 | ||
033a42c2 MK |
1877 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
1878 | selected frame, and print it briefly. */ | |
c906108c | 1879 | |
c906108c | 1880 | static void |
fba45db2 | 1881 | down_silently_base (char *count_exp) |
c906108c | 1882 | { |
52f0bd74 | 1883 | struct frame_info *frame; |
033a42c2 | 1884 | int count = -1; |
f89b749f | 1885 | |
c906108c | 1886 | if (count_exp) |
bb518678 | 1887 | count = -parse_and_eval_long (count_exp); |
c5aa993b | 1888 | |
033a42c2 MK |
1889 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
1890 | if (count != 0 && count_exp == NULL) | |
c906108c | 1891 | { |
033a42c2 MK |
1892 | /* We only do this if COUNT_EXP is not specified. That way |
1893 | "down" means to really go down (and let me know if that is | |
1894 | impossible), but "down 9999" can be used to mean go all the | |
1895 | way down without getting an error. */ | |
c906108c | 1896 | |
033a42c2 | 1897 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
c906108c SS |
1898 | } |
1899 | ||
0f7d239c | 1900 | select_frame (frame); |
c906108c SS |
1901 | } |
1902 | ||
c906108c | 1903 | static void |
fba45db2 | 1904 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1905 | { |
1906 | down_silently_base (count_exp); | |
c906108c SS |
1907 | } |
1908 | ||
1909 | static void | |
fba45db2 | 1910 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1911 | { |
1912 | down_silently_base (count_exp); | |
b04f3ab4 | 1913 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c906108c SS |
1914 | } |
1915 | \f | |
033a42c2 | 1916 | |
8b93c638 | 1917 | void |
fba45db2 | 1918 | return_command (char *retval_exp, int from_tty) |
c906108c | 1919 | { |
5ed92fa8 | 1920 | struct frame_info *thisframe; |
d80b854b | 1921 | struct gdbarch *gdbarch; |
c906108c | 1922 | struct symbol *thisfun; |
3d6d86c6 | 1923 | struct value *return_value = NULL; |
fc70c2a0 | 1924 | const char *query_prefix = ""; |
c906108c | 1925 | |
5ed92fa8 UW |
1926 | thisframe = get_selected_frame ("No selected frame."); |
1927 | thisfun = get_frame_function (thisframe); | |
d80b854b | 1928 | gdbarch = get_frame_arch (thisframe); |
c906108c | 1929 | |
edb3359d DJ |
1930 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
1931 | error (_("Can not force return from an inlined function.")); | |
1932 | ||
fc70c2a0 AC |
1933 | /* Compute the return value. If the computation triggers an error, |
1934 | let it bail. If the return type can't be handled, set | |
1935 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational | |
1936 | message. */ | |
c906108c SS |
1937 | if (retval_exp) |
1938 | { | |
61ff14c6 JK |
1939 | struct expression *retval_expr = parse_expression (retval_exp); |
1940 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); | |
c906108c SS |
1941 | struct type *return_type = NULL; |
1942 | ||
fc70c2a0 AC |
1943 | /* Compute the return value. Should the computation fail, this |
1944 | call throws an error. */ | |
61ff14c6 | 1945 | return_value = evaluate_expression (retval_expr); |
c906108c | 1946 | |
fc70c2a0 AC |
1947 | /* Cast return value to the return type of the function. Should |
1948 | the cast fail, this call throws an error. */ | |
c906108c SS |
1949 | if (thisfun != NULL) |
1950 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1951 | if (return_type == NULL) | |
61ff14c6 JK |
1952 | { |
1953 | if (retval_expr->elts[0].opcode != UNOP_CAST) | |
1954 | error (_("Return value type not available for selected " | |
1955 | "stack frame.\n" | |
1956 | "Please use an explicit cast of the value to return.")); | |
1957 | return_type = value_type (return_value); | |
1958 | } | |
1959 | do_cleanups (old_chain); | |
3e9a183c | 1960 | CHECK_TYPEDEF (return_type); |
c906108c SS |
1961 | return_value = value_cast (return_type, return_value); |
1962 | ||
fc70c2a0 AC |
1963 | /* Make sure the value is fully evaluated. It may live in the |
1964 | stack frame we're about to pop. */ | |
d69fe07e | 1965 | if (value_lazy (return_value)) |
c906108c | 1966 | value_fetch_lazy (return_value); |
c906108c | 1967 | |
667e784f AC |
1968 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
1969 | /* If the return-type is "void", don't try to find the | |
1970 | return-value's location. However, do still evaluate the | |
1971 | return expression so that, even when the expression result | |
1972 | is discarded, side effects such as "return i++" still | |
033a42c2 | 1973 | occur. */ |
667e784f | 1974 | return_value = NULL; |
42e2132c | 1975 | else if (thisfun != NULL |
d80b854b UW |
1976 | && using_struct_return (gdbarch, |
1977 | SYMBOL_TYPE (thisfun), return_type)) | |
fc70c2a0 | 1978 | { |
3e43a32a MS |
1979 | query_prefix = "The location at which to store the " |
1980 | "function's return value is unknown.\n" | |
1981 | "If you continue, the return value " | |
1982 | "that you specified will be ignored.\n"; | |
667e784f | 1983 | return_value = NULL; |
fc70c2a0 | 1984 | } |
c906108c SS |
1985 | } |
1986 | ||
fc70c2a0 AC |
1987 | /* Does an interactive user really want to do this? Include |
1988 | information, such as how well GDB can handle the return value, in | |
1989 | the query message. */ | |
1990 | if (from_tty) | |
1991 | { | |
1992 | int confirmed; | |
433759f7 | 1993 | |
fc70c2a0 | 1994 | if (thisfun == NULL) |
e2e0b3e5 | 1995 | confirmed = query (_("%sMake selected stack frame return now? "), |
fc70c2a0 AC |
1996 | query_prefix); |
1997 | else | |
e2e0b3e5 | 1998 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
fc70c2a0 AC |
1999 | SYMBOL_PRINT_NAME (thisfun)); |
2000 | if (!confirmed) | |
8a3fe4f8 | 2001 | error (_("Not confirmed")); |
fc70c2a0 | 2002 | } |
c906108c | 2003 | |
a45ae3ed UW |
2004 | /* Discard the selected frame and all frames inner-to it. */ |
2005 | frame_pop (get_selected_frame (NULL)); | |
c906108c | 2006 | |
a1f5b845 | 2007 | /* Store RETURN_VALUE in the just-returned register set. */ |
fc70c2a0 AC |
2008 | if (return_value != NULL) |
2009 | { | |
df407dfe | 2010 | struct type *return_type = value_type (return_value); |
7500260a | 2011 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
42e2132c JK |
2012 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
2013 | ||
2014 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, | |
2015 | NULL, NULL) | |
750eb019 | 2016 | == RETURN_VALUE_REGISTER_CONVENTION); |
42e2132c | 2017 | gdbarch_return_value (gdbarch, func_type, return_type, |
594f7785 | 2018 | get_current_regcache (), NULL /*read*/, |
0fd88904 | 2019 | value_contents (return_value) /*write*/); |
fc70c2a0 | 2020 | } |
1a2aab69 | 2021 | |
fc70c2a0 AC |
2022 | /* If we are at the end of a call dummy now, pop the dummy frame |
2023 | too. */ | |
e8bcf01f AC |
2024 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
2025 | frame_pop (get_current_frame ()); | |
1a2aab69 | 2026 | |
c906108c | 2027 | /* If interactive, print the frame that is now current. */ |
c906108c SS |
2028 | if (from_tty) |
2029 | frame_command ("0", 1); | |
2030 | else | |
2031 | select_frame_command ("0", 0); | |
2032 | } | |
2033 | ||
033a42c2 | 2034 | /* Sets the scope to input function name, provided that the function |
c378eb4e | 2035 | is within the current stack frame. */ |
c906108c SS |
2036 | |
2037 | struct function_bounds | |
2038 | { | |
2039 | CORE_ADDR low, high; | |
2040 | }; | |
2041 | ||
2042 | static void | |
fba45db2 | 2043 | func_command (char *arg, int from_tty) |
c906108c | 2044 | { |
033a42c2 | 2045 | struct frame_info *frame; |
c906108c SS |
2046 | int found = 0; |
2047 | struct symtabs_and_lines sals; | |
2048 | int i; | |
2049 | int level = 1; | |
033a42c2 | 2050 | struct function_bounds *func_bounds = NULL; |
c906108c | 2051 | |
033a42c2 | 2052 | if (arg != NULL) |
c906108c SS |
2053 | return; |
2054 | ||
033a42c2 | 2055 | frame = parse_frame_specification ("0"); |
c906108c SS |
2056 | sals = decode_line_spec (arg, 1); |
2057 | func_bounds = (struct function_bounds *) xmalloc ( | |
2058 | sizeof (struct function_bounds) * sals.nelts); | |
2059 | for (i = 0; (i < sals.nelts && !found); i++) | |
2060 | { | |
033a42c2 MK |
2061 | if (sals.sals[i].pc == 0 |
2062 | || find_pc_partial_function (sals.sals[i].pc, NULL, | |
2063 | &func_bounds[i].low, | |
2064 | &func_bounds[i].high) == 0) | |
c906108c | 2065 | { |
033a42c2 | 2066 | func_bounds[i].low = func_bounds[i].high = 0; |
c906108c SS |
2067 | } |
2068 | } | |
2069 | ||
2070 | do | |
2071 | { | |
2072 | for (i = 0; (i < sals.nelts && !found); i++) | |
033a42c2 MK |
2073 | found = (get_frame_pc (frame) >= func_bounds[i].low |
2074 | && get_frame_pc (frame) < func_bounds[i].high); | |
c906108c SS |
2075 | if (!found) |
2076 | { | |
2077 | level = 1; | |
033a42c2 | 2078 | frame = find_relative_frame (frame, &level); |
c906108c SS |
2079 | } |
2080 | } | |
2081 | while (!found && level == 0); | |
2082 | ||
2083 | if (func_bounds) | |
b8c9b27d | 2084 | xfree (func_bounds); |
c906108c SS |
2085 | |
2086 | if (!found) | |
a3f17187 | 2087 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
206415a3 | 2088 | else if (frame != get_selected_frame (NULL)) |
033a42c2 | 2089 | select_and_print_frame (frame); |
c906108c SS |
2090 | } |
2091 | ||
2092 | /* Gets the language of the current frame. */ | |
2093 | ||
2094 | enum language | |
fba45db2 | 2095 | get_frame_language (void) |
c906108c | 2096 | { |
206415a3 | 2097 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
c5aa993b | 2098 | |
033a42c2 | 2099 | if (frame) |
c906108c | 2100 | { |
e3eebbd7 PA |
2101 | volatile struct gdb_exception ex; |
2102 | CORE_ADDR pc = 0; | |
2103 | struct symtab *s; | |
2104 | ||
7ae4c3a5 | 2105 | /* We determine the current frame language by looking up its |
033a42c2 MK |
2106 | associated symtab. To retrieve this symtab, we use the frame |
2107 | PC. However we cannot use the frame PC as is, because it | |
2108 | usually points to the instruction following the "call", which | |
2109 | is sometimes the first instruction of another function. So | |
2110 | we rely on get_frame_address_in_block(), it provides us with | |
2111 | a PC that is guaranteed to be inside the frame's code | |
2112 | block. */ | |
033a42c2 | 2113 | |
e3eebbd7 PA |
2114 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
2115 | { | |
2116 | pc = get_frame_address_in_block (frame); | |
2117 | } | |
2118 | if (ex.reason < 0) | |
2119 | { | |
2120 | if (ex.error != NOT_AVAILABLE_ERROR) | |
2121 | throw_exception (ex); | |
2122 | } | |
2123 | else | |
2124 | { | |
2125 | s = find_pc_symtab (pc); | |
2126 | if (s != NULL) | |
2127 | return s->language; | |
2128 | } | |
c906108c | 2129 | } |
c906108c | 2130 | |
033a42c2 | 2131 | return language_unknown; |
c906108c SS |
2132 | } |
2133 | \f | |
033a42c2 MK |
2134 | |
2135 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2136 | void _initialize_stack (void); | |
2137 | ||
c906108c | 2138 | void |
fba45db2 | 2139 | _initialize_stack (void) |
c906108c | 2140 | { |
1bedd215 AC |
2141 | add_com ("return", class_stack, return_command, _("\ |
2142 | Make selected stack frame return to its caller.\n\ | |
c906108c SS |
2143 | Control remains in the debugger, but when you continue\n\ |
2144 | execution will resume in the frame above the one now selected.\n\ | |
1bedd215 AC |
2145 | If an argument is given, it is an expression for the value to return.")); |
2146 | ||
2147 | add_com ("up", class_stack, up_command, _("\ | |
2148 | Select and print stack frame that called this one.\n\ | |
2149 | An argument says how many frames up to go.")); | |
2150 | add_com ("up-silently", class_support, up_silently_command, _("\ | |
2151 | Same as the `up' command, but does not print anything.\n\ | |
2152 | This is useful in command scripts.")); | |
2153 | ||
2154 | add_com ("down", class_stack, down_command, _("\ | |
2155 | Select and print stack frame called by this one.\n\ | |
2156 | An argument says how many frames down to go.")); | |
c906108c SS |
2157 | add_com_alias ("do", "down", class_stack, 1); |
2158 | add_com_alias ("dow", "down", class_stack, 1); | |
1bedd215 AC |
2159 | add_com ("down-silently", class_support, down_silently_command, _("\ |
2160 | Same as the `down' command, but does not print anything.\n\ | |
2161 | This is useful in command scripts.")); | |
c906108c | 2162 | |
1bedd215 | 2163 | add_com ("frame", class_stack, frame_command, _("\ |
3e43a32a MS |
2164 | Select and print a stack frame.\nWith no argument, \ |
2165 | print the selected stack frame. (See also \"info frame\").\n\ | |
c906108c SS |
2166 | An argument specifies the frame to select.\n\ |
2167 | It can be a stack frame number or the address of the frame.\n\ | |
2168 | With argument, nothing is printed if input is coming from\n\ | |
1bedd215 | 2169 | a command file or a user-defined command.")); |
c906108c SS |
2170 | |
2171 | add_com_alias ("f", "frame", class_stack, 1); | |
2172 | ||
2173 | if (xdb_commands) | |
2174 | { | |
c5aa993b | 2175 | add_com ("L", class_stack, current_frame_command, |
1bedd215 | 2176 | _("Print the current stack frame.\n")); |
c906108c SS |
2177 | add_com_alias ("V", "frame", class_stack, 1); |
2178 | } | |
1bedd215 AC |
2179 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
2180 | Select a stack frame without printing anything.\n\ | |
c906108c | 2181 | An argument specifies the frame to select.\n\ |
1bedd215 | 2182 | It can be a stack frame number or the address of the frame.\n")); |
c906108c | 2183 | |
1bedd215 AC |
2184 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
2185 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
3e43a32a MS |
2186 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
2187 | 'full' qualifier also prints the values of the local variables.\n")); | |
c906108c SS |
2188 | add_com_alias ("bt", "backtrace", class_stack, 0); |
2189 | if (xdb_commands) | |
2190 | { | |
2191 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1bedd215 | 2192 | add_com ("T", class_stack, backtrace_full_command, _("\ |
cce7e648 | 2193 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
c906108c SS |
2194 | and the values of the local variables.\n\ |
2195 | With a negative argument, print outermost -COUNT frames.\n\ | |
1bedd215 | 2196 | Usage: T <count>\n")); |
c906108c SS |
2197 | } |
2198 | ||
2199 | add_com_alias ("where", "backtrace", class_alias, 0); | |
2200 | add_info ("stack", backtrace_command, | |
1bedd215 | 2201 | _("Backtrace of the stack, or innermost COUNT frames.")); |
c906108c SS |
2202 | add_info_alias ("s", "stack", 1); |
2203 | add_info ("frame", frame_info, | |
1bedd215 | 2204 | _("All about selected stack frame, or frame at ADDR.")); |
c906108c SS |
2205 | add_info_alias ("f", "frame", 1); |
2206 | add_info ("locals", locals_info, | |
1bedd215 | 2207 | _("Local variables of current stack frame.")); |
c906108c | 2208 | add_info ("args", args_info, |
1bedd215 | 2209 | _("Argument variables of current stack frame.")); |
c906108c | 2210 | if (xdb_commands) |
c5aa993b | 2211 | add_com ("l", class_info, args_plus_locals_info, |
1bedd215 | 2212 | _("Argument and local variables of current stack frame.")); |
c906108c SS |
2213 | |
2214 | if (dbx_commands) | |
1bedd215 AC |
2215 | add_com ("func", class_stack, func_command, _("\ |
2216 | Select the stack frame that contains <func>.\n\ | |
2217 | Usage: func <name>\n")); | |
c906108c SS |
2218 | |
2219 | add_info ("catch", catch_info, | |
1bedd215 | 2220 | _("Exceptions that can be caught in the current stack frame.")); |
c906108c | 2221 | |
88408340 JB |
2222 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
2223 | print_frame_arguments_choices, &print_frame_arguments, | |
2224 | _("Set printing of non-scalar frame arguments"), | |
2225 | _("Show printing of non-scalar frame arguments"), | |
2226 | NULL, NULL, NULL, &setprintlist, &showprintlist); | |
2227 | ||
30c33a9f HZ |
2228 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
2229 | &disassemble_next_line, _("\ | |
3e43a32a MS |
2230 | Set whether to disassemble next source line or insn when execution stops."), |
2231 | _("\ | |
2232 | Show whether to disassemble next source line or insn when execution stops."), | |
2233 | _("\ | |
80a0ea0f EZ |
2234 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
2235 | to displaying the source line itself. If the next source line cannot\n\ | |
2236 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ | |
2237 | will display disassembly of next instruction instead of showing the\n\ | |
2238 | source line.\n\ | |
2239 | If AUTO, display disassembly of next instruction only if the source line\n\ | |
2240 | cannot be displayed.\n\ | |
2241 | If OFF (which is the default), never display the disassembly of the next\n\ | |
2242 | source line."), | |
30c33a9f HZ |
2243 | NULL, |
2244 | show_disassemble_next_line, | |
2245 | &setlist, &showlist); | |
a362e3d3 | 2246 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
c906108c | 2247 | } |