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c906108c | 1 | /* Print and select stack frames for GDB, the GNU debugger. |
8926118c AC |
2 | |
3 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, | |
7789c6f5 | 4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
8926118c | 5 | 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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include <ctype.h> | |
25 | #include "defs.h" | |
26 | #include "gdb_string.h" | |
27 | #include "value.h" | |
28 | #include "symtab.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "expression.h" | |
31 | #include "language.h" | |
32 | #include "frame.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "gdbcore.h" | |
35 | #include "target.h" | |
0378c332 | 36 | #include "source.h" |
c906108c SS |
37 | #include "breakpoint.h" |
38 | #include "demangle.h" | |
39 | #include "inferior.h" | |
40 | #include "annotate.h" | |
8b93c638 | 41 | #include "ui-out.h" |
c906108c SS |
42 | |
43 | /* Prototypes for exported functions. */ | |
44 | ||
a14ed312 | 45 | void args_info (char *, int); |
c906108c | 46 | |
a14ed312 | 47 | void locals_info (char *, int); |
c906108c | 48 | |
507f3c78 | 49 | void (*selected_frame_level_changed_hook) (int); |
c906108c | 50 | |
a14ed312 | 51 | void _initialize_stack (void); |
c906108c | 52 | |
a58dd373 | 53 | void return_command (char *, int); |
c906108c | 54 | |
a58dd373 | 55 | /* Prototypes for local functions. */ |
c906108c | 56 | |
a14ed312 | 57 | static void down_command (char *, int); |
c906108c | 58 | |
a14ed312 | 59 | static void down_silently_base (char *); |
c906108c | 60 | |
a14ed312 | 61 | static void down_silently_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void up_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void up_silently_base (char *); |
c906108c | 66 | |
a14ed312 | 67 | static void up_silently_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | void frame_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void current_frame_command (char *, int); |
7a292a7a | 72 | |
a14ed312 | 73 | static void select_frame_command (char *, int); |
c906108c | 74 | |
d9fcf2fb | 75 | static void print_frame_arg_vars (struct frame_info *, struct ui_file *); |
c906108c | 76 | |
a14ed312 | 77 | static void catch_info (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void args_plus_locals_info (char *, int); |
c906108c | 80 | |
d9fcf2fb JM |
81 | static void print_frame_label_vars (struct frame_info *, int, |
82 | struct ui_file *); | |
c906108c | 83 | |
d9fcf2fb JM |
84 | static void print_frame_local_vars (struct frame_info *, int, |
85 | struct ui_file *); | |
c906108c | 86 | |
d9fcf2fb JM |
87 | static int print_block_frame_labels (struct block *, int *, |
88 | struct ui_file *); | |
c906108c | 89 | |
d9fcf2fb JM |
90 | static int print_block_frame_locals (struct block *, |
91 | struct frame_info *, | |
92 | int, | |
93 | struct ui_file *); | |
c906108c | 94 | |
c5394b80 JM |
95 | static void print_frame (struct frame_info *fi, |
96 | int level, | |
97 | int source, | |
98 | int args, | |
99 | struct symtab_and_line sal); | |
100 | ||
a14ed312 | 101 | static void backtrace_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | struct frame_info *parse_frame_specification (char *); |
c906108c | 104 | |
a14ed312 | 105 | static void frame_info (char *, int); |
c906108c SS |
106 | |
107 | extern int addressprint; /* Print addresses, or stay symbolic only? */ | |
c906108c | 108 | |
c906108c SS |
109 | /* Zero means do things normally; we are interacting directly with the |
110 | user. One means print the full filename and linenumber when a | |
111 | frame is printed, and do so in a format emacs18/emacs19.22 can | |
112 | parse. Two means print similar annotations, but in many more | |
113 | cases and in a slightly different syntax. */ | |
114 | ||
115 | int annotation_level = 0; | |
c906108c | 116 | \f |
c5aa993b JM |
117 | |
118 | struct print_stack_frame_args | |
119 | { | |
120 | struct frame_info *fi; | |
121 | int level; | |
122 | int source; | |
123 | int args; | |
124 | }; | |
c906108c | 125 | |
c906108c SS |
126 | /* Show or print the frame arguments. |
127 | Pass the args the way catch_errors wants them. */ | |
a14ed312 | 128 | static int print_stack_frame_stub (void *args); |
c906108c | 129 | static int |
fba45db2 | 130 | print_stack_frame_stub (void *args) |
c906108c | 131 | { |
c5aa993b | 132 | struct print_stack_frame_args *p = (struct print_stack_frame_args *) args; |
c906108c | 133 | |
7789c6f5 | 134 | print_frame_info (p->fi, p->level, p->source, p->args); |
c906108c SS |
135 | return 0; |
136 | } | |
137 | ||
c906108c SS |
138 | /* Show or print a stack frame briefly. FRAME_INFI should be the frame info |
139 | and LEVEL should be its level in the stack (or -1 for level not defined). | |
140 | This prints the level, the function executing, the arguments, | |
141 | and the file name and line number. | |
142 | If the pc is not at the beginning of the source line, | |
143 | the actual pc is printed at the beginning. | |
144 | ||
145 | If SOURCE is 1, print the source line as well. | |
146 | If SOURCE is -1, print ONLY the source line. */ | |
147 | ||
148 | void | |
fba45db2 | 149 | print_stack_frame (struct frame_info *fi, int level, int source) |
c906108c SS |
150 | { |
151 | struct print_stack_frame_args args; | |
152 | ||
153 | args.fi = fi; | |
154 | args.level = level; | |
155 | args.source = source; | |
156 | args.args = 1; | |
157 | ||
c5aa993b | 158 | catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL); |
7789c6f5 | 159 | } |
c906108c | 160 | |
c5aa993b JM |
161 | struct print_args_args |
162 | { | |
c906108c SS |
163 | struct symbol *func; |
164 | struct frame_info *fi; | |
d9fcf2fb | 165 | struct ui_file *stream; |
c906108c SS |
166 | }; |
167 | ||
4efb68b1 | 168 | static int print_args_stub (void *); |
c906108c SS |
169 | |
170 | /* Pass the args the way catch_errors wants them. */ | |
171 | ||
172 | static int | |
4efb68b1 | 173 | print_args_stub (void *args) |
c906108c SS |
174 | { |
175 | int numargs; | |
c5aa993b | 176 | struct print_args_args *p = (struct print_args_args *) args; |
c906108c | 177 | |
392a587b | 178 | numargs = FRAME_NUM_ARGS (p->fi); |
ac9a91a7 | 179 | print_frame_args (p->func, p->fi, numargs, p->stream); |
c906108c SS |
180 | return 0; |
181 | } | |
182 | ||
183 | /* Print information about a frame for frame "fi" at level "level". | |
c5394b80 JM |
184 | Used in "where" output, also used to emit breakpoint or step |
185 | messages. | |
186 | LEVEL is the level of the frame, or -1 if it is the | |
187 | innermost frame but we don't want to print the level. | |
188 | The meaning of the SOURCE argument is: | |
189 | SRC_LINE: Print only source line | |
190 | LOCATION: Print only location | |
191 | LOC_AND_SRC: Print location and source line. */ | |
c906108c | 192 | |
7789c6f5 EZ |
193 | void |
194 | print_frame_info (struct frame_info *fi, int level, int source, int args) | |
c906108c SS |
195 | { |
196 | struct symtab_and_line sal; | |
c5394b80 JM |
197 | int source_print; |
198 | int location_print; | |
c906108c | 199 | |
0225421b | 200 | if (get_frame_type (fi) == DUMMY_FRAME) |
c906108c | 201 | { |
bdd78e62 | 202 | annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi)); |
c906108c SS |
203 | |
204 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 205 | to list for this frame. */ |
c906108c | 206 | if (level >= 0) |
52c6a6ac JJ |
207 | { |
208 | ui_out_text (uiout, "#"); | |
209 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); | |
210 | } | |
c906108c SS |
211 | annotate_function_call (); |
212 | printf_filtered ("<function called from gdb>\n"); | |
213 | annotate_frame_end (); | |
214 | return; | |
215 | } | |
5a203e44 | 216 | if ((get_frame_type (fi) == SIGTRAMP_FRAME)) |
c906108c | 217 | { |
bdd78e62 | 218 | annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi)); |
c906108c SS |
219 | |
220 | /* Do this regardless of SOURCE because we don't have any source | |
c5aa993b | 221 | to list for this frame. */ |
c906108c | 222 | if (level >= 0) |
52c6a6ac JJ |
223 | { |
224 | ui_out_text (uiout, "#"); | |
225 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); | |
226 | } | |
c906108c SS |
227 | annotate_signal_handler_caller (); |
228 | printf_filtered ("<signal handler called>\n"); | |
229 | annotate_frame_end (); | |
230 | return; | |
231 | } | |
232 | ||
233 | /* If fi is not the innermost frame, that normally means that fi->pc | |
5a203e44 AC |
234 | points to *after* the call instruction, and we want to get the |
235 | line containing the call, never the next line. But if the next | |
236 | frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the next frame | |
237 | was not entered as the result of a call, and we want to get the | |
238 | line containing fi->pc. */ | |
1058bca7 | 239 | find_frame_sal (fi, &sal); |
c906108c | 240 | |
c5394b80 JM |
241 | location_print = (source == LOCATION |
242 | || source == LOC_AND_ADDRESS | |
243 | || source == SRC_AND_LOC); | |
244 | ||
245 | if (location_print || !sal.symtab) | |
246 | print_frame (fi, level, source, args, sal); | |
247 | ||
248 | source_print = (source == SRC_LINE || source == SRC_AND_LOC); | |
0378c332 | 249 | |
66609862 | 250 | if (sal.symtab) |
0378c332 | 251 | set_current_source_symtab_and_line (&sal); |
c5394b80 JM |
252 | |
253 | if (source_print && sal.symtab) | |
254 | { | |
0378c332 | 255 | struct symtab_and_line cursal; |
c5394b80 | 256 | int done = 0; |
bdd78e62 | 257 | int mid_statement = (source == SRC_LINE) && (get_frame_pc (fi) != sal.pc); |
c5394b80 JM |
258 | |
259 | if (annotation_level) | |
260 | done = identify_source_line (sal.symtab, sal.line, mid_statement, | |
bdd78e62 | 261 | get_frame_pc (fi)); |
c5394b80 JM |
262 | if (!done) |
263 | { | |
ba4bbdcb | 264 | if (print_frame_info_listing_hook) |
66609862 | 265 | print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0); |
ba4bbdcb | 266 | else |
c5394b80 | 267 | { |
ba4bbdcb KS |
268 | /* We used to do this earlier, but that is clearly |
269 | wrong. This function is used by many different | |
270 | parts of gdb, including normal_stop in infrun.c, | |
271 | which uses this to print out the current PC | |
272 | when we stepi/nexti into the middle of a source | |
273 | line. Only the command line really wants this | |
274 | behavior. Other UIs probably would like the | |
275 | ability to decide for themselves if it is desired. */ | |
276 | if (addressprint && mid_statement) | |
277 | { | |
bdd78e62 | 278 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi)); |
ba4bbdcb | 279 | ui_out_text (uiout, "\t"); |
ba4bbdcb KS |
280 | } |
281 | ||
282 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); | |
c5394b80 | 283 | } |
c5394b80 | 284 | } |
53cb0458 FN |
285 | /* Make sure we have at least a default source file */ |
286 | set_default_source_symtab_and_line (); | |
287 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
288 | cursal.line = max (sal.line - get_lines_to_list () / 2, 1); |
289 | set_current_source_symtab_and_line (&cursal); | |
c5394b80 JM |
290 | } |
291 | ||
292 | if (source != 0) | |
bdd78e62 | 293 | set_default_breakpoint (1, get_frame_pc (fi), sal.symtab, sal.line); |
c5394b80 JM |
294 | |
295 | annotate_frame_end (); | |
296 | ||
297 | gdb_flush (gdb_stdout); | |
298 | } | |
299 | ||
300 | static void | |
301 | print_frame (struct frame_info *fi, | |
302 | int level, | |
303 | int source, | |
304 | int args, | |
305 | struct symtab_and_line sal) | |
306 | { | |
307 | struct symbol *func; | |
308 | register char *funname = 0; | |
309 | enum language funlang = language_unknown; | |
8b93c638 JM |
310 | struct ui_stream *stb; |
311 | struct cleanup *old_chain; | |
e6e0bfab | 312 | struct cleanup *list_chain; |
8b93c638 JM |
313 | |
314 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 315 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c5394b80 | 316 | |
6f0eaa01 | 317 | func = find_pc_function (frame_address_in_block (fi)); |
c906108c SS |
318 | if (func) |
319 | { | |
320 | /* In certain pathological cases, the symtabs give the wrong | |
c5aa993b JM |
321 | function (when we are in the first function in a file which |
322 | is compiled without debugging symbols, the previous function | |
323 | is compiled with debugging symbols, and the "foo.o" symbol | |
324 | that is supposed to tell us where the file with debugging symbols | |
325 | ends has been truncated by ar because it is longer than 15 | |
326 | characters). This also occurs if the user uses asm() to create | |
327 | a function but not stabs for it (in a file compiled -g). | |
328 | ||
329 | So look in the minimal symbol tables as well, and if it comes | |
330 | up with a larger address for the function use that instead. | |
331 | I don't think this can ever cause any problems; there shouldn't | |
332 | be any minimal symbols in the middle of a function; if this is | |
333 | ever changed many parts of GDB will need to be changed (and we'll | |
334 | create a find_pc_minimal_function or some such). */ | |
c906108c | 335 | |
6f0eaa01 | 336 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c | 337 | if (msymbol != NULL |
c5aa993b | 338 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
c906108c SS |
339 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
340 | { | |
341 | #if 0 | |
342 | /* There is no particular reason to think the line number | |
343 | information is wrong. Someone might have just put in | |
344 | a label with asm() but left the line numbers alone. */ | |
345 | /* In this case we have no way of knowing the source file | |
346 | and line number, so don't print them. */ | |
347 | sal.symtab = 0; | |
348 | #endif | |
349 | /* We also don't know anything about the function besides | |
350 | its address and name. */ | |
351 | func = 0; | |
352 | funname = SYMBOL_NAME (msymbol); | |
353 | funlang = SYMBOL_LANGUAGE (msymbol); | |
354 | } | |
355 | else | |
356 | { | |
c5394b80 JM |
357 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display the |
358 | demangled name that we already have stored in the symbol | |
359 | table, but we stored a version with DMGL_PARAMS turned | |
360 | on, and here we don't want to display parameters. So call | |
361 | the demangler again, with DMGL_ANSI only. (Yes, I know | |
362 | that printf_symbol_filtered() will again try to demangle | |
363 | the name on the fly, but the issue is that if | |
364 | cplus_demangle() fails here, it'll fail there too. So we | |
365 | want to catch the failure ("demangled==NULL" case below) | |
366 | here, while we still have our hands on the function | |
367 | symbol.) */ | |
c5aa993b | 368 | char *demangled; |
c906108c SS |
369 | funname = SYMBOL_NAME (func); |
370 | funlang = SYMBOL_LANGUAGE (func); | |
c5aa993b JM |
371 | if (funlang == language_cplus) |
372 | { | |
373 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
374 | if (demangled == NULL) | |
c5394b80 JM |
375 | /* If the demangler fails, try the demangled name from |
376 | the symbol table. This'll have parameters, but | |
377 | that's preferable to diplaying a mangled name. */ | |
c5aa993b JM |
378 | funname = SYMBOL_SOURCE_NAME (func); |
379 | } | |
c906108c SS |
380 | } |
381 | } | |
382 | else | |
383 | { | |
6f0eaa01 | 384 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi)); |
c906108c SS |
385 | if (msymbol != NULL) |
386 | { | |
387 | funname = SYMBOL_NAME (msymbol); | |
388 | funlang = SYMBOL_LANGUAGE (msymbol); | |
389 | } | |
390 | } | |
391 | ||
bdd78e62 | 392 | annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi)); |
c5394b80 | 393 | |
666547aa | 394 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
c5394b80 JM |
395 | |
396 | if (level >= 0) | |
8b93c638 | 397 | { |
8b93c638 | 398 | ui_out_text (uiout, "#"); |
52c6a6ac | 399 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", level); |
8b93c638 | 400 | } |
c5394b80 | 401 | if (addressprint) |
bdd78e62 AC |
402 | if (get_frame_pc (fi) != sal.pc |
403 | || !sal.symtab | |
404 | || source == LOC_AND_ADDRESS) | |
c5394b80 JM |
405 | { |
406 | annotate_frame_address (); | |
bdd78e62 | 407 | ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi)); |
8b93c638 JM |
408 | annotate_frame_address_end (); |
409 | ui_out_text (uiout, " in "); | |
c5394b80 JM |
410 | } |
411 | annotate_frame_function_name (); | |
8b93c638 JM |
412 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang, |
413 | DMGL_ANSI); | |
414 | ui_out_field_stream (uiout, "func", stb); | |
415 | ui_out_wrap_hint (uiout, " "); | |
c5394b80 JM |
416 | annotate_frame_args (); |
417 | ||
8b93c638 | 418 | ui_out_text (uiout, " ("); |
c5394b80 | 419 | if (args) |
c906108c | 420 | { |
c5394b80 | 421 | struct print_args_args args; |
d493eb33 | 422 | struct cleanup *args_list_chain; |
c5394b80 JM |
423 | args.fi = fi; |
424 | args.func = func; | |
425 | args.stream = gdb_stdout; | |
68c81b54 | 426 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
c5394b80 | 427 | catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL); |
8b93c638 JM |
428 | /* FIXME: args must be a list. If one argument is a string it will |
429 | have " that will not be properly escaped. */ | |
666547aa | 430 | /* Invoke ui_out_tuple_end. */ |
d493eb33 | 431 | do_cleanups (args_list_chain); |
c5394b80 JM |
432 | QUIT; |
433 | } | |
8b93c638 | 434 | ui_out_text (uiout, ")"); |
c5394b80 JM |
435 | if (sal.symtab && sal.symtab->filename) |
436 | { | |
437 | annotate_frame_source_begin (); | |
8b93c638 JM |
438 | ui_out_wrap_hint (uiout, " "); |
439 | ui_out_text (uiout, " at "); | |
440 | annotate_frame_source_file (); | |
441 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
442 | annotate_frame_source_file_end (); | |
443 | ui_out_text (uiout, ":"); | |
444 | annotate_frame_source_line (); | |
445 | ui_out_field_int (uiout, "line", sal.line); | |
c5394b80 JM |
446 | annotate_frame_source_end (); |
447 | } | |
c906108c | 448 | |
c5394b80 JM |
449 | #ifdef PC_SOLIB |
450 | if (!funname || (!sal.symtab || !sal.symtab->filename)) | |
c906108c | 451 | { |
bdd78e62 | 452 | char *lib = PC_SOLIB (get_frame_pc (fi)); |
c5394b80 | 453 | if (lib) |
c906108c | 454 | { |
c5394b80 | 455 | annotate_frame_where (); |
8b93c638 JM |
456 | ui_out_wrap_hint (uiout, " "); |
457 | ui_out_text (uiout, " from "); | |
458 | ui_out_field_string (uiout, "from", lib); | |
c906108c | 459 | } |
c906108c | 460 | } |
c5394b80 | 461 | #endif /* PC_SOLIB */ |
e514a9d6 | 462 | |
666547aa | 463 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
e6e0bfab | 464 | do_cleanups (list_chain); |
8b93c638 JM |
465 | ui_out_text (uiout, "\n"); |
466 | do_cleanups (old_chain); | |
c906108c SS |
467 | } |
468 | \f | |
c906108c SS |
469 | /* Show the frame info. If this is the tui, it will be shown in |
470 | the source display otherwise, nothing is done */ | |
471 | void | |
fba45db2 | 472 | show_stack_frame (struct frame_info *fi) |
c906108c | 473 | { |
c906108c | 474 | } |
c906108c | 475 | \f |
c5aa993b | 476 | |
c906108c SS |
477 | /* Read a frame specification in whatever the appropriate format is. |
478 | Call error() if the specification is in any way invalid (i.e. | |
479 | this function never returns NULL). */ | |
480 | ||
481 | struct frame_info * | |
fba45db2 | 482 | parse_frame_specification (char *frame_exp) |
c906108c SS |
483 | { |
484 | int numargs = 0; | |
485 | #define MAXARGS 4 | |
486 | CORE_ADDR args[MAXARGS]; | |
ec9a3449 | 487 | int level; |
c5aa993b | 488 | |
c906108c SS |
489 | if (frame_exp) |
490 | { | |
491 | char *addr_string, *p; | |
492 | struct cleanup *tmp_cleanup; | |
493 | ||
c5aa993b JM |
494 | while (*frame_exp == ' ') |
495 | frame_exp++; | |
c906108c SS |
496 | |
497 | while (*frame_exp) | |
498 | { | |
499 | if (numargs > MAXARGS) | |
500 | error ("Too many args in frame specification"); | |
501 | /* Parse an argument. */ | |
c5aa993b | 502 | for (p = frame_exp; *p && *p != ' '; p++) |
c906108c | 503 | ; |
c5aa993b | 504 | addr_string = savestring (frame_exp, p - frame_exp); |
c906108c SS |
505 | |
506 | { | |
3d6d86c6 | 507 | struct value *vp; |
ec9a3449 | 508 | |
b8c9b27d | 509 | tmp_cleanup = make_cleanup (xfree, addr_string); |
ec9a3449 | 510 | |
24285e3a | 511 | /* NOTE: we call parse_and_eval and then both |
1aa20aa8 | 512 | value_as_long and value_as_address rather than calling |
24285e3a DT |
513 | parse_and_eval_long and parse_and_eval_address because |
514 | of the issue of potential side effects from evaluating | |
515 | the expression. */ | |
ec9a3449 DT |
516 | vp = parse_and_eval (addr_string); |
517 | if (numargs == 0) | |
518 | level = value_as_long (vp); | |
519 | ||
1aa20aa8 | 520 | args[numargs++] = value_as_address (vp); |
c906108c SS |
521 | do_cleanups (tmp_cleanup); |
522 | } | |
523 | ||
524 | /* Skip spaces, move to possible next arg. */ | |
c5aa993b JM |
525 | while (*p == ' ') |
526 | p++; | |
c906108c SS |
527 | frame_exp = p; |
528 | } | |
529 | } | |
530 | ||
531 | switch (numargs) | |
532 | { | |
533 | case 0: | |
6e7f8b9c | 534 | if (deprecated_selected_frame == NULL) |
c906108c | 535 | error ("No selected frame."); |
6e7f8b9c | 536 | return deprecated_selected_frame; |
c906108c SS |
537 | /* NOTREACHED */ |
538 | case 1: | |
539 | { | |
c906108c | 540 | struct frame_info *fid = |
c5aa993b | 541 | find_relative_frame (get_current_frame (), &level); |
c906108c SS |
542 | struct frame_info *tfid; |
543 | ||
544 | if (level == 0) | |
545 | /* find_relative_frame was successful */ | |
546 | return fid; | |
547 | ||
548 | /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications | |
549 | take at least 2 addresses. It is important to detect this case | |
550 | here so that "frame 100" does not give a confusing error message | |
551 | like "frame specification requires two addresses". This of course | |
552 | does not solve the "frame 100" problem for machines on which | |
553 | a frame specification can be made with one address. To solve | |
554 | that, we need a new syntax for a specifying a frame by address. | |
555 | I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for | |
556 | two args, etc.), but people might think that is too much typing, | |
557 | so I guess *0x23,0x45 would be a possible alternative (commas | |
558 | really should be used instead of spaces to delimit; using spaces | |
559 | normally works in an expression). */ | |
560 | #ifdef SETUP_ARBITRARY_FRAME | |
823ca731 | 561 | error ("No frame %s", paddr_d (args[0])); |
c906108c SS |
562 | #endif |
563 | ||
564 | /* If (s)he specifies the frame with an address, he deserves what | |
565 | (s)he gets. Still, give the highest one that matches. */ | |
566 | ||
567 | for (fid = get_current_frame (); | |
8b36eed8 | 568 | fid && get_frame_base (fid) != args[0]; |
c906108c SS |
569 | fid = get_prev_frame (fid)) |
570 | ; | |
571 | ||
572 | if (fid) | |
573 | while ((tfid = get_prev_frame (fid)) && | |
8b36eed8 | 574 | (get_frame_base (tfid) == args[0])) |
c906108c | 575 | fid = tfid; |
c5aa993b | 576 | |
c906108c SS |
577 | /* We couldn't identify the frame as an existing frame, but |
578 | perhaps we can create one with a single argument. */ | |
579 | } | |
580 | ||
c5aa993b | 581 | default: |
c906108c SS |
582 | #ifdef SETUP_ARBITRARY_FRAME |
583 | return SETUP_ARBITRARY_FRAME (numargs, args); | |
584 | #else | |
585 | /* Usual case. Do it here rather than have everyone supply | |
c5aa993b | 586 | a SETUP_ARBITRARY_FRAME that does this. */ |
c906108c SS |
587 | if (numargs == 1) |
588 | return create_new_frame (args[0], 0); | |
589 | error ("Too many args in frame specification"); | |
590 | #endif | |
591 | /* NOTREACHED */ | |
592 | } | |
593 | /* NOTREACHED */ | |
594 | } | |
595 | ||
596 | /* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except | |
597 | that if it is unsure about the answer, it returns 0 | |
598 | instead of guessing (this happens on the VAX and i960, for example). | |
599 | ||
600 | On most machines, we never have to guess about the args address, | |
601 | so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ | |
602 | #if !defined (FRAME_ARGS_ADDRESS_CORRECT) | |
603 | #define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS | |
604 | #endif | |
605 | ||
606 | /* Print verbosely the selected frame or the frame at address ADDR. | |
607 | This means absolutely all information in the frame is printed. */ | |
608 | ||
609 | static void | |
fba45db2 | 610 | frame_info (char *addr_exp, int from_tty) |
c906108c SS |
611 | { |
612 | struct frame_info *fi; | |
613 | struct symtab_and_line sal; | |
614 | struct symbol *func; | |
615 | struct symtab *s; | |
616 | struct frame_info *calling_frame_info; | |
617 | int i, count, numregs; | |
618 | char *funname = 0; | |
619 | enum language funlang = language_unknown; | |
620 | ||
621 | if (!target_has_stack) | |
622 | error ("No stack."); | |
623 | ||
624 | fi = parse_frame_specification (addr_exp); | |
625 | if (fi == NULL) | |
626 | error ("Invalid frame specified."); | |
627 | ||
1058bca7 | 628 | find_frame_sal (fi, &sal); |
c906108c | 629 | func = get_frame_function (fi); |
1058bca7 AC |
630 | /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain |
631 | the same value. */ | |
bdd78e62 | 632 | s = find_pc_symtab (get_frame_pc (fi)); |
c906108c SS |
633 | if (func) |
634 | { | |
635 | /* I'd like to use SYMBOL_SOURCE_NAME() here, to display | |
636 | * the demangled name that we already have stored in | |
637 | * the symbol table, but we stored a version with | |
638 | * DMGL_PARAMS turned on, and here we don't want | |
639 | * to display parameters. So call the demangler again, | |
640 | * with DMGL_ANSI only. RT | |
641 | * (Yes, I know that printf_symbol_filtered() will | |
642 | * again try to demangle the name on the fly, but | |
643 | * the issue is that if cplus_demangle() fails here, | |
644 | * it'll fail there too. So we want to catch the failure | |
645 | * ("demangled==NULL" case below) here, while we still | |
646 | * have our hands on the function symbol.) | |
647 | */ | |
c5aa993b JM |
648 | char *demangled; |
649 | funname = SYMBOL_NAME (func); | |
650 | funlang = SYMBOL_LANGUAGE (func); | |
651 | if (funlang == language_cplus) | |
652 | { | |
653 | demangled = cplus_demangle (funname, DMGL_ANSI); | |
654 | /* If the demangler fails, try the demangled name | |
655 | * from the symbol table. This'll have parameters, | |
656 | * but that's preferable to diplaying a mangled name. | |
657 | */ | |
658 | if (demangled == NULL) | |
659 | funname = SYMBOL_SOURCE_NAME (func); | |
660 | } | |
c906108c SS |
661 | } |
662 | else | |
663 | { | |
bdd78e62 | 664 | register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi)); |
c906108c SS |
665 | if (msymbol != NULL) |
666 | { | |
667 | funname = SYMBOL_NAME (msymbol); | |
668 | funlang = SYMBOL_LANGUAGE (msymbol); | |
669 | } | |
670 | } | |
671 | calling_frame_info = get_prev_frame (fi); | |
672 | ||
6e7f8b9c | 673 | if (!addr_exp && frame_relative_level (deprecated_selected_frame) >= 0) |
c906108c | 674 | { |
b31da25e | 675 | printf_filtered ("Stack level %d, frame at ", |
6e7f8b9c | 676 | frame_relative_level (deprecated_selected_frame)); |
8b36eed8 | 677 | print_address_numeric (get_frame_base (fi), 1, gdb_stdout); |
c906108c SS |
678 | printf_filtered (":\n"); |
679 | } | |
680 | else | |
681 | { | |
682 | printf_filtered ("Stack frame at "); | |
8b36eed8 | 683 | print_address_numeric (get_frame_base (fi), 1, gdb_stdout); |
c906108c SS |
684 | printf_filtered (":\n"); |
685 | } | |
686 | printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); | |
bdd78e62 | 687 | print_address_numeric (get_frame_pc (fi), 1, gdb_stdout); |
c906108c SS |
688 | |
689 | wrap_here (" "); | |
690 | if (funname) | |
691 | { | |
692 | printf_filtered (" in "); | |
693 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, | |
694 | DMGL_ANSI | DMGL_PARAMS); | |
695 | } | |
696 | wrap_here (" "); | |
697 | if (sal.symtab) | |
698 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); | |
699 | puts_filtered ("; "); | |
700 | wrap_here (" "); | |
701 | printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM)); | |
f18c5a73 | 702 | print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout); |
c906108c SS |
703 | printf_filtered ("\n"); |
704 | ||
705 | { | |
392a587b JM |
706 | int frameless; |
707 | frameless = FRAMELESS_FUNCTION_INVOCATION (fi); | |
c906108c SS |
708 | if (frameless) |
709 | printf_filtered (" (FRAMELESS),"); | |
710 | } | |
711 | ||
712 | if (calling_frame_info) | |
713 | { | |
714 | printf_filtered (" called by frame at "); | |
8b36eed8 AC |
715 | print_address_numeric (get_frame_base (calling_frame_info), |
716 | 1, gdb_stdout); | |
c906108c | 717 | } |
75e3c1f9 | 718 | if (get_next_frame (fi) && calling_frame_info) |
c906108c SS |
719 | puts_filtered (","); |
720 | wrap_here (" "); | |
75e3c1f9 | 721 | if (get_next_frame (fi)) |
c906108c SS |
722 | { |
723 | printf_filtered (" caller of frame at "); | |
8b36eed8 AC |
724 | print_address_numeric (get_frame_base (get_next_frame (fi)), 1, |
725 | gdb_stdout); | |
c906108c | 726 | } |
75e3c1f9 | 727 | if (get_next_frame (fi) || calling_frame_info) |
c906108c SS |
728 | puts_filtered ("\n"); |
729 | if (s) | |
1058bca7 AC |
730 | printf_filtered (" source language %s.\n", |
731 | language_str (s->language)); | |
c906108c SS |
732 | |
733 | #ifdef PRINT_EXTRA_FRAME_INFO | |
734 | PRINT_EXTRA_FRAME_INFO (fi); | |
735 | #endif | |
736 | ||
737 | { | |
738 | /* Address of the argument list for this frame, or 0. */ | |
739 | CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); | |
740 | /* Number of args for this frame, or -1 if unknown. */ | |
741 | int numargs; | |
742 | ||
743 | if (arg_list == 0) | |
744 | printf_filtered (" Arglist at unknown address.\n"); | |
745 | else | |
746 | { | |
747 | printf_filtered (" Arglist at "); | |
748 | print_address_numeric (arg_list, 1, gdb_stdout); | |
749 | printf_filtered (","); | |
750 | ||
392a587b | 751 | numargs = FRAME_NUM_ARGS (fi); |
c906108c SS |
752 | if (numargs < 0) |
753 | puts_filtered (" args: "); | |
754 | else if (numargs == 0) | |
755 | puts_filtered (" no args."); | |
756 | else if (numargs == 1) | |
757 | puts_filtered (" 1 arg: "); | |
758 | else | |
759 | printf_filtered (" %d args: ", numargs); | |
760 | print_frame_args (func, fi, numargs, gdb_stdout); | |
761 | puts_filtered ("\n"); | |
762 | } | |
763 | } | |
764 | { | |
765 | /* Address of the local variables for this frame, or 0. */ | |
766 | CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); | |
767 | ||
768 | if (arg_list == 0) | |
769 | printf_filtered (" Locals at unknown address,"); | |
770 | else | |
771 | { | |
772 | printf_filtered (" Locals at "); | |
773 | print_address_numeric (arg_list, 1, gdb_stdout); | |
774 | printf_filtered (","); | |
775 | } | |
776 | } | |
777 | ||
8f871025 AC |
778 | if (FRAME_INIT_SAVED_REGS_P () |
779 | && get_frame_saved_regs (fi) == NULL) | |
4f460812 AC |
780 | FRAME_INIT_SAVED_REGS (fi); |
781 | /* Print as much information as possible on the location of all the | |
782 | registers. */ | |
783 | { | |
784 | enum lval_type lval; | |
785 | int optimized; | |
786 | CORE_ADDR addr; | |
787 | int realnum; | |
788 | int count; | |
789 | int i; | |
790 | int need_nl = 1; | |
791 | ||
792 | /* The sp is special; what's displayed isn't the save address, but | |
793 | the value of the previous frame's sp. This is a legacy thing, | |
794 | at one stage the frame cached the previous frame's SP instead | |
795 | of its address, hence it was easiest to just display the cached | |
796 | value. */ | |
797 | if (SP_REGNUM >= 0) | |
798 | { | |
799 | /* Find out the location of the saved stack pointer with out | |
800 | actually evaluating it. */ | |
801 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
802 | &realnum, NULL); | |
803 | if (!optimized && lval == not_lval) | |
c906108c | 804 | { |
4f460812 AC |
805 | void *value = alloca (MAX_REGISTER_RAW_SIZE); |
806 | CORE_ADDR sp; | |
807 | frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr, | |
808 | &realnum, value); | |
809 | sp = extract_address (value, REGISTER_RAW_SIZE (SP_REGNUM)); | |
810 | printf_filtered (" Previous frame's sp is "); | |
811 | print_address_numeric (sp, 1, gdb_stdout); | |
812 | printf_filtered ("\n"); | |
813 | need_nl = 0; | |
c906108c | 814 | } |
4f460812 AC |
815 | else if (!optimized && lval == lval_memory) |
816 | { | |
817 | printf_filtered (" Previous frame's sp at "); | |
818 | print_address_numeric (addr, 1, gdb_stdout); | |
819 | printf_filtered ("\n"); | |
820 | need_nl = 0; | |
821 | } | |
822 | else if (!optimized && lval == lval_register) | |
823 | { | |
824 | printf_filtered (" Previous frame's sp in %s\n", | |
825 | REGISTER_NAME (realnum)); | |
826 | need_nl = 0; | |
827 | } | |
828 | /* else keep quiet. */ | |
829 | } | |
830 | ||
831 | count = 0; | |
832 | numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
833 | for (i = 0; i < numregs; i++) | |
834 | if (i != SP_REGNUM) | |
835 | { | |
836 | /* Find out the location of the saved register without | |
837 | fetching the corresponding value. */ | |
838 | frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum, | |
839 | NULL); | |
840 | /* For moment, only display registers that were saved on the | |
841 | stack. */ | |
842 | if (!optimized && lval == lval_memory) | |
843 | { | |
844 | if (count == 0) | |
845 | puts_filtered (" Saved registers:\n "); | |
846 | else | |
847 | puts_filtered (","); | |
848 | wrap_here (" "); | |
849 | printf_filtered (" %s at ", REGISTER_NAME (i)); | |
850 | print_address_numeric (addr, 1, gdb_stdout); | |
851 | count++; | |
852 | } | |
853 | } | |
854 | if (count || need_nl) | |
c906108c | 855 | puts_filtered ("\n"); |
4f460812 | 856 | } |
c906108c SS |
857 | } |
858 | ||
859 | #if 0 | |
860 | /* Set a limit on the number of frames printed by default in a | |
861 | backtrace. */ | |
862 | ||
863 | static int backtrace_limit; | |
864 | ||
865 | static void | |
fba45db2 | 866 | set_backtrace_limit_command (char *count_exp, int from_tty) |
c906108c | 867 | { |
bb518678 | 868 | int count = parse_and_eval_long (count_exp); |
c906108c SS |
869 | |
870 | if (count < 0) | |
871 | error ("Negative argument not meaningful as backtrace limit."); | |
872 | ||
873 | backtrace_limit = count; | |
874 | } | |
875 | ||
876 | static void | |
fba45db2 | 877 | backtrace_limit_info (char *arg, int from_tty) |
c906108c SS |
878 | { |
879 | if (arg) | |
880 | error ("\"Info backtrace-limit\" takes no arguments."); | |
881 | ||
882 | printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); | |
883 | } | |
884 | #endif | |
885 | ||
886 | /* Print briefly all stack frames or just the innermost COUNT frames. */ | |
887 | ||
a14ed312 KB |
888 | static void backtrace_command_1 (char *count_exp, int show_locals, |
889 | int from_tty); | |
c906108c | 890 | static void |
fba45db2 | 891 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
c906108c SS |
892 | { |
893 | struct frame_info *fi; | |
894 | register int count; | |
895 | register int i; | |
896 | register struct frame_info *trailing; | |
897 | register int trailing_level; | |
898 | ||
899 | if (!target_has_stack) | |
900 | error ("No stack."); | |
901 | ||
902 | /* The following code must do two things. First, it must | |
903 | set the variable TRAILING to the frame from which we should start | |
904 | printing. Second, it must set the variable count to the number | |
905 | of frames which we should print, or -1 if all of them. */ | |
906 | trailing = get_current_frame (); | |
d082b2bb AC |
907 | |
908 | /* The target can be in a state where there is no valid frames | |
909 | (e.g., just connected). */ | |
910 | if (trailing == NULL) | |
911 | error ("No stack."); | |
912 | ||
c906108c SS |
913 | trailing_level = 0; |
914 | if (count_exp) | |
915 | { | |
bb518678 | 916 | count = parse_and_eval_long (count_exp); |
c906108c SS |
917 | if (count < 0) |
918 | { | |
919 | struct frame_info *current; | |
920 | ||
921 | count = -count; | |
922 | ||
923 | current = trailing; | |
924 | while (current && count--) | |
925 | { | |
926 | QUIT; | |
927 | current = get_prev_frame (current); | |
928 | } | |
c5aa993b | 929 | |
c906108c SS |
930 | /* Will stop when CURRENT reaches the top of the stack. TRAILING |
931 | will be COUNT below it. */ | |
932 | while (current) | |
933 | { | |
934 | QUIT; | |
935 | trailing = get_prev_frame (trailing); | |
936 | current = get_prev_frame (current); | |
937 | trailing_level++; | |
938 | } | |
c5aa993b | 939 | |
c906108c SS |
940 | count = -1; |
941 | } | |
942 | } | |
943 | else | |
944 | count = -1; | |
945 | ||
946 | if (info_verbose) | |
947 | { | |
948 | struct partial_symtab *ps; | |
c5aa993b | 949 | |
c906108c | 950 | /* Read in symbols for all of the frames. Need to do this in |
c5aa993b JM |
951 | a separate pass so that "Reading in symbols for xxx" messages |
952 | don't screw up the appearance of the backtrace. Also | |
953 | if people have strong opinions against reading symbols for | |
954 | backtrace this may have to be an option. */ | |
c906108c SS |
955 | i = count; |
956 | for (fi = trailing; | |
957 | fi != NULL && i--; | |
958 | fi = get_prev_frame (fi)) | |
959 | { | |
960 | QUIT; | |
6f0eaa01 | 961 | ps = find_pc_psymtab (frame_address_in_block (fi)); |
c906108c SS |
962 | if (ps) |
963 | PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ | |
964 | } | |
965 | } | |
966 | ||
967 | for (i = 0, fi = trailing; | |
968 | fi && count--; | |
969 | i++, fi = get_prev_frame (fi)) | |
970 | { | |
971 | QUIT; | |
972 | ||
973 | /* Don't use print_stack_frame; if an error() occurs it probably | |
c5aa993b JM |
974 | means further attempts to backtrace would fail (on the other |
975 | hand, perhaps the code does or could be fixed to make sure | |
976 | the frame->prev field gets set to NULL in that case). */ | |
7789c6f5 | 977 | print_frame_info (fi, trailing_level + i, 0, 1); |
c906108c | 978 | if (show_locals) |
c5aa993b | 979 | print_frame_local_vars (fi, 1, gdb_stdout); |
c906108c SS |
980 | } |
981 | ||
982 | /* If we've stopped before the end, mention that. */ | |
983 | if (fi && from_tty) | |
984 | printf_filtered ("(More stack frames follow...)\n"); | |
985 | } | |
986 | ||
987 | static void | |
fba45db2 | 988 | backtrace_command (char *arg, int from_tty) |
c906108c | 989 | { |
c5aa993b JM |
990 | struct cleanup *old_chain = (struct cleanup *) NULL; |
991 | char **argv = (char **) NULL; | |
992 | int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; | |
993 | char *argPtr = arg; | |
c906108c | 994 | |
c5aa993b | 995 | if (arg != (char *) NULL) |
c906108c SS |
996 | { |
997 | int i; | |
998 | ||
c5aa993b | 999 | argv = buildargv (arg); |
7a292a7a | 1000 | old_chain = make_cleanup_freeargv (argv); |
c906108c | 1001 | argc = 0; |
c5aa993b JM |
1002 | for (i = 0; (argv[i] != (char *) NULL); i++) |
1003 | { | |
745b8ca0 | 1004 | unsigned int j; |
c5aa993b JM |
1005 | |
1006 | for (j = 0; (j < strlen (argv[i])); j++) | |
1007 | argv[i][j] = tolower (argv[i][j]); | |
1008 | ||
1009 | if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full")) | |
1010 | argIndicatingFullTrace = argc; | |
1011 | else | |
1012 | { | |
1013 | argc++; | |
1014 | totArgLen += strlen (argv[i]); | |
1015 | } | |
1016 | } | |
c906108c SS |
1017 | totArgLen += argc; |
1018 | if (argIndicatingFullTrace >= 0) | |
c5aa993b JM |
1019 | { |
1020 | if (totArgLen > 0) | |
1021 | { | |
1022 | argPtr = (char *) xmalloc (totArgLen + 1); | |
1023 | if (!argPtr) | |
1024 | nomem (0); | |
1025 | else | |
1026 | { | |
1027 | memset (argPtr, 0, totArgLen + 1); | |
1028 | for (i = 0; (i < (argc + 1)); i++) | |
1029 | { | |
1030 | if (i != argIndicatingFullTrace) | |
1031 | { | |
1032 | strcat (argPtr, argv[i]); | |
1033 | strcat (argPtr, " "); | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | } | |
1038 | else | |
1039 | argPtr = (char *) NULL; | |
1040 | } | |
c906108c SS |
1041 | } |
1042 | ||
1043 | backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); | |
1044 | ||
1045 | if (argIndicatingFullTrace >= 0 && totArgLen > 0) | |
b8c9b27d | 1046 | xfree (argPtr); |
c906108c SS |
1047 | |
1048 | if (old_chain) | |
c5aa993b | 1049 | do_cleanups (old_chain); |
c906108c SS |
1050 | } |
1051 | ||
a14ed312 | 1052 | static void backtrace_full_command (char *arg, int from_tty); |
c906108c | 1053 | static void |
fba45db2 | 1054 | backtrace_full_command (char *arg, int from_tty) |
c906108c SS |
1055 | { |
1056 | backtrace_command_1 (arg, 1, from_tty); | |
1057 | } | |
c906108c | 1058 | \f |
c5aa993b | 1059 | |
c906108c SS |
1060 | /* Print the local variables of a block B active in FRAME. |
1061 | Return 1 if any variables were printed; 0 otherwise. */ | |
1062 | ||
1063 | static int | |
fba45db2 KB |
1064 | print_block_frame_locals (struct block *b, register struct frame_info *fi, |
1065 | int num_tabs, register struct ui_file *stream) | |
c906108c | 1066 | { |
c906108c SS |
1067 | register int i, j; |
1068 | register struct symbol *sym; | |
1069 | register int values_printed = 0; | |
1070 | ||
e88c90f2 | 1071 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1072 | { |
c906108c SS |
1073 | switch (SYMBOL_CLASS (sym)) |
1074 | { | |
1075 | case LOC_LOCAL: | |
1076 | case LOC_REGISTER: | |
1077 | case LOC_STATIC: | |
1078 | case LOC_BASEREG: | |
1079 | values_printed = 1; | |
1080 | for (j = 0; j < num_tabs; j++) | |
c5aa993b | 1081 | fputs_filtered ("\t", stream); |
c906108c SS |
1082 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); |
1083 | fputs_filtered (" = ", stream); | |
1084 | print_variable_value (sym, fi, stream); | |
1085 | fprintf_filtered (stream, "\n"); | |
1086 | break; | |
1087 | ||
1088 | default: | |
1089 | /* Ignore symbols which are not locals. */ | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | return values_printed; | |
1094 | } | |
1095 | ||
1096 | /* Same, but print labels. */ | |
1097 | ||
1098 | static int | |
fba45db2 KB |
1099 | print_block_frame_labels (struct block *b, int *have_default, |
1100 | register struct ui_file *stream) | |
c906108c | 1101 | { |
c906108c SS |
1102 | register int i; |
1103 | register struct symbol *sym; | |
1104 | register int values_printed = 0; | |
1105 | ||
e88c90f2 | 1106 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1107 | { |
c906108c SS |
1108 | if (STREQ (SYMBOL_NAME (sym), "default")) |
1109 | { | |
1110 | if (*have_default) | |
1111 | continue; | |
1112 | *have_default = 1; | |
1113 | } | |
1114 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
1115 | { | |
1116 | struct symtab_and_line sal; | |
1117 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
1118 | values_printed = 1; | |
1119 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1120 | if (addressprint) | |
1121 | { | |
1122 | fprintf_filtered (stream, " "); | |
1123 | print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); | |
1124 | } | |
1125 | fprintf_filtered (stream, " in file %s, line %d\n", | |
1126 | sal.symtab->filename, sal.line); | |
1127 | } | |
1128 | } | |
1129 | return values_printed; | |
1130 | } | |
1131 | ||
1132 | /* Print on STREAM all the local variables in frame FRAME, | |
1133 | including all the blocks active in that frame | |
1134 | at its current pc. | |
1135 | ||
1136 | Returns 1 if the job was done, | |
1137 | or 0 if nothing was printed because we have no info | |
1138 | on the function running in FRAME. */ | |
1139 | ||
1140 | static void | |
fba45db2 KB |
1141 | print_frame_local_vars (register struct frame_info *fi, register int num_tabs, |
1142 | register struct ui_file *stream) | |
c906108c | 1143 | { |
ae767bfb | 1144 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1145 | register int values_printed = 0; |
1146 | ||
1147 | if (block == 0) | |
1148 | { | |
1149 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1150 | return; | |
1151 | } | |
c5aa993b | 1152 | |
c906108c SS |
1153 | while (block != 0) |
1154 | { | |
1155 | if (print_block_frame_locals (block, fi, num_tabs, stream)) | |
1156 | values_printed = 1; | |
1157 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1158 | Don't continue to its superblock, the block of |
1159 | per-file symbols. */ | |
c906108c SS |
1160 | if (BLOCK_FUNCTION (block)) |
1161 | break; | |
1162 | block = BLOCK_SUPERBLOCK (block); | |
1163 | } | |
1164 | ||
1165 | if (!values_printed) | |
1166 | { | |
1167 | fprintf_filtered (stream, "No locals.\n"); | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | /* Same, but print labels. */ | |
1172 | ||
1173 | static void | |
fba45db2 KB |
1174 | print_frame_label_vars (register struct frame_info *fi, int this_level_only, |
1175 | register struct ui_file *stream) | |
c906108c SS |
1176 | { |
1177 | register struct blockvector *bl; | |
ae767bfb | 1178 | register struct block *block = get_frame_block (fi, 0); |
c906108c SS |
1179 | register int values_printed = 0; |
1180 | int index, have_default = 0; | |
1181 | char *blocks_printed; | |
bdd78e62 | 1182 | CORE_ADDR pc = get_frame_pc (fi); |
c906108c SS |
1183 | |
1184 | if (block == 0) | |
1185 | { | |
1186 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1187 | return; | |
1188 | } | |
1189 | ||
1190 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
1191 | blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1192 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
1193 | ||
1194 | while (block != 0) | |
1195 | { | |
1196 | CORE_ADDR end = BLOCK_END (block) - 4; | |
1197 | int last_index; | |
1198 | ||
1199 | if (bl != blockvector_for_pc (end, &index)) | |
1200 | error ("blockvector blotch"); | |
1201 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
1202 | error ("blockvector botch"); | |
1203 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
1204 | index += 1; | |
1205 | ||
1206 | /* Don't print out blocks that have gone by. */ | |
1207 | while (index < last_index | |
1208 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
1209 | index++; | |
1210 | ||
1211 | while (index < last_index | |
1212 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
1213 | { | |
1214 | if (blocks_printed[index] == 0) | |
1215 | { | |
1216 | if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) | |
1217 | values_printed = 1; | |
1218 | blocks_printed[index] = 1; | |
1219 | } | |
1220 | index++; | |
1221 | } | |
1222 | if (have_default) | |
1223 | return; | |
1224 | if (values_printed && this_level_only) | |
1225 | return; | |
1226 | ||
1227 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
1228 | Don't continue to its superblock, the block of |
1229 | per-file symbols. */ | |
c906108c SS |
1230 | if (BLOCK_FUNCTION (block)) |
1231 | break; | |
1232 | block = BLOCK_SUPERBLOCK (block); | |
1233 | } | |
1234 | ||
1235 | if (!values_printed && !this_level_only) | |
1236 | { | |
1237 | fprintf_filtered (stream, "No catches.\n"); | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | /* ARGSUSED */ | |
1242 | void | |
fba45db2 | 1243 | locals_info (char *args, int from_tty) |
c906108c | 1244 | { |
6e7f8b9c | 1245 | if (!deprecated_selected_frame) |
c906108c | 1246 | error ("No frame selected."); |
6e7f8b9c | 1247 | print_frame_local_vars (deprecated_selected_frame, 0, gdb_stdout); |
c906108c SS |
1248 | } |
1249 | ||
1250 | static void | |
fba45db2 | 1251 | catch_info (char *ignore, int from_tty) |
c906108c | 1252 | { |
c5aa993b | 1253 | struct symtab_and_line *sal; |
c906108c | 1254 | |
c5aa993b | 1255 | /* Check for target support for exception handling */ |
c906108c SS |
1256 | sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); |
1257 | if (sal) | |
1258 | { | |
1259 | /* Currently not handling this */ | |
1260 | /* Ideally, here we should interact with the C++ runtime | |
1261 | system to find the list of active handlers, etc. */ | |
1262 | fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); | |
1263 | #if 0 | |
6e7f8b9c | 1264 | if (!deprecated_selected_frame) |
c5aa993b | 1265 | error ("No frame selected."); |
c906108c SS |
1266 | #endif |
1267 | } | |
1268 | else | |
1269 | { | |
c5aa993b | 1270 | /* Assume g++ compiled code -- old v 4.16 behaviour */ |
6e7f8b9c | 1271 | if (!deprecated_selected_frame) |
c5aa993b JM |
1272 | error ("No frame selected."); |
1273 | ||
6e7f8b9c | 1274 | print_frame_label_vars (deprecated_selected_frame, 0, gdb_stdout); |
c906108c SS |
1275 | } |
1276 | } | |
1277 | ||
1278 | static void | |
fba45db2 KB |
1279 | print_frame_arg_vars (register struct frame_info *fi, |
1280 | register struct ui_file *stream) | |
c906108c SS |
1281 | { |
1282 | struct symbol *func = get_frame_function (fi); | |
1283 | register struct block *b; | |
c906108c SS |
1284 | register int i; |
1285 | register struct symbol *sym, *sym2; | |
1286 | register int values_printed = 0; | |
1287 | ||
1288 | if (func == 0) | |
1289 | { | |
1290 | fprintf_filtered (stream, "No symbol table info available.\n"); | |
1291 | return; | |
1292 | } | |
1293 | ||
1294 | b = SYMBOL_BLOCK_VALUE (func); | |
e88c90f2 | 1295 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 1296 | { |
c906108c SS |
1297 | switch (SYMBOL_CLASS (sym)) |
1298 | { | |
1299 | case LOC_ARG: | |
1300 | case LOC_LOCAL_ARG: | |
1301 | case LOC_REF_ARG: | |
1302 | case LOC_REGPARM: | |
1303 | case LOC_REGPARM_ADDR: | |
1304 | case LOC_BASEREG_ARG: | |
1305 | values_printed = 1; | |
1306 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); | |
1307 | fputs_filtered (" = ", stream); | |
1308 | ||
1309 | /* We have to look up the symbol because arguments can have | |
1310 | two entries (one a parameter, one a local) and the one we | |
1311 | want is the local, which lookup_symbol will find for us. | |
1312 | This includes gcc1 (not gcc2) on the sparc when passing a | |
1313 | small structure and gcc2 when the argument type is float | |
1314 | and it is passed as a double and converted to float by | |
1315 | the prologue (in the latter case the type of the LOC_ARG | |
1316 | symbol is double and the type of the LOC_LOCAL symbol is | |
1317 | float). There are also LOC_ARG/LOC_REGISTER pairs which | |
1318 | are not combined in symbol-reading. */ | |
1319 | ||
1320 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
c5aa993b | 1321 | b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); |
c906108c SS |
1322 | print_variable_value (sym2, fi, stream); |
1323 | fprintf_filtered (stream, "\n"); | |
1324 | break; | |
1325 | ||
1326 | default: | |
1327 | /* Don't worry about things which aren't arguments. */ | |
1328 | break; | |
1329 | } | |
1330 | } | |
c906108c SS |
1331 | if (!values_printed) |
1332 | { | |
1333 | fprintf_filtered (stream, "No arguments.\n"); | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | void | |
fba45db2 | 1338 | args_info (char *ignore, int from_tty) |
c906108c | 1339 | { |
6e7f8b9c | 1340 | if (!deprecated_selected_frame) |
c906108c | 1341 | error ("No frame selected."); |
6e7f8b9c | 1342 | print_frame_arg_vars (deprecated_selected_frame, gdb_stdout); |
c906108c SS |
1343 | } |
1344 | ||
1345 | ||
1346 | static void | |
fba45db2 | 1347 | args_plus_locals_info (char *ignore, int from_tty) |
c906108c | 1348 | { |
c5aa993b JM |
1349 | args_info (ignore, from_tty); |
1350 | locals_info (ignore, from_tty); | |
c906108c | 1351 | } |
c906108c | 1352 | \f |
c5aa993b | 1353 | |
0f7d239c AC |
1354 | /* Select frame FI. Also print the stack frame and show the source if |
1355 | this is the tui version. */ | |
bedfa57b AC |
1356 | static void |
1357 | select_and_print_frame (struct frame_info *fi) | |
c906108c | 1358 | { |
0f7d239c | 1359 | select_frame (fi); |
c906108c SS |
1360 | if (fi) |
1361 | { | |
bedfa57b | 1362 | print_stack_frame (fi, frame_relative_level (fi), 1); |
c906108c SS |
1363 | } |
1364 | } | |
c906108c | 1365 | \f |
c906108c | 1366 | /* Return the symbol-block in which the selected frame is executing. |
ae767bfb JB |
1367 | Can return zero under various legitimate circumstances. |
1368 | ||
1369 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant | |
1370 | code address within the block returned. We use this to decide | |
1371 | which macros are in scope. */ | |
c906108c SS |
1372 | |
1373 | struct block * | |
ae767bfb | 1374 | get_selected_block (CORE_ADDR *addr_in_block) |
c906108c SS |
1375 | { |
1376 | if (!target_has_stack) | |
1377 | return 0; | |
1378 | ||
8c69fc49 AC |
1379 | /* NOTE: cagney/2002-11-28: Why go to all this effort to not create |
1380 | a selected/current frame? Perhaphs this function is called, | |
1381 | indirectly, by WFI in "infrun.c" where avoiding the creation of | |
1382 | an inner most frame is very important (it slows down single | |
1383 | step). I suspect, though that this was true in the deep dark | |
1384 | past but is no longer the case. A mindless look at all the | |
1385 | callers tends to support this theory. I think we should be able | |
1386 | to assume that there is always a selcted frame. */ | |
6e7f8b9c AC |
1387 | /* gdb_assert (deprecated_selected_frame != NULL); So, do you feel |
1388 | lucky? */ | |
1389 | if (!deprecated_selected_frame) | |
8c69fc49 AC |
1390 | { |
1391 | CORE_ADDR pc = read_pc (); | |
1392 | if (addr_in_block != NULL) | |
1393 | *addr_in_block = pc; | |
1394 | return block_for_pc (pc); | |
1395 | } | |
6e7f8b9c | 1396 | return get_frame_block (deprecated_selected_frame, addr_in_block); |
c906108c SS |
1397 | } |
1398 | ||
1399 | /* Find a frame a certain number of levels away from FRAME. | |
1400 | LEVEL_OFFSET_PTR points to an int containing the number of levels. | |
1401 | Positive means go to earlier frames (up); negative, the reverse. | |
1402 | The int that contains the number of levels is counted toward | |
1403 | zero as the frames for those levels are found. | |
1404 | If the top or bottom frame is reached, that frame is returned, | |
1405 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates | |
1406 | how much farther the original request asked to go. */ | |
1407 | ||
1408 | struct frame_info * | |
fba45db2 KB |
1409 | find_relative_frame (register struct frame_info *frame, |
1410 | register int *level_offset_ptr) | |
c906108c SS |
1411 | { |
1412 | register struct frame_info *prev; | |
1413 | register struct frame_info *frame1; | |
1414 | ||
1415 | /* Going up is simple: just do get_prev_frame enough times | |
1416 | or until initial frame is reached. */ | |
1417 | while (*level_offset_ptr > 0) | |
1418 | { | |
1419 | prev = get_prev_frame (frame); | |
1420 | if (prev == 0) | |
1421 | break; | |
1422 | (*level_offset_ptr)--; | |
1423 | frame = prev; | |
1424 | } | |
1425 | /* Going down is just as simple. */ | |
1426 | if (*level_offset_ptr < 0) | |
1427 | { | |
c5aa993b JM |
1428 | while (*level_offset_ptr < 0) |
1429 | { | |
1430 | frame1 = get_next_frame (frame); | |
1431 | if (!frame1) | |
1432 | break; | |
1433 | frame = frame1; | |
1434 | (*level_offset_ptr)++; | |
1435 | } | |
c906108c SS |
1436 | } |
1437 | return frame; | |
1438 | } | |
1439 | ||
1440 | /* The "select_frame" command. With no arg, NOP. | |
1441 | With arg LEVEL_EXP, select the frame at level LEVEL if it is a | |
1442 | valid level. Otherwise, treat level_exp as an address expression | |
1443 | and select it. See parse_frame_specification for more info on proper | |
1444 | frame expressions. */ | |
1445 | ||
1446 | /* ARGSUSED */ | |
8b93c638 | 1447 | void |
fba45db2 | 1448 | select_frame_command_wrapper (char *level_exp, int from_tty) |
8b93c638 JM |
1449 | { |
1450 | select_frame_command (level_exp, from_tty); | |
1451 | } | |
8926118c | 1452 | |
c906108c | 1453 | static void |
fba45db2 | 1454 | select_frame_command (char *level_exp, int from_tty) |
c906108c | 1455 | { |
bfb3754e | 1456 | struct frame_info *frame; |
6e7f8b9c | 1457 | int level = frame_relative_level (deprecated_selected_frame); |
c906108c SS |
1458 | |
1459 | if (!target_has_stack) | |
1460 | error ("No stack."); | |
1461 | ||
1462 | frame = parse_frame_specification (level_exp); | |
1463 | ||
0f7d239c | 1464 | select_frame (frame); |
6e7f8b9c AC |
1465 | if (level != frame_relative_level (deprecated_selected_frame)) |
1466 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); | |
c906108c SS |
1467 | } |
1468 | ||
1469 | /* The "frame" command. With no arg, print selected frame briefly. | |
1470 | With arg, behaves like select_frame and then prints the selected | |
1471 | frame. */ | |
1472 | ||
1473 | void | |
fba45db2 | 1474 | frame_command (char *level_exp, int from_tty) |
c906108c SS |
1475 | { |
1476 | select_frame_command (level_exp, from_tty); | |
7789c6f5 EZ |
1477 | print_stack_frame (deprecated_selected_frame, |
1478 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1479 | } |
1480 | ||
1481 | /* The XDB Compatibility command to print the current frame. */ | |
1482 | ||
7a292a7a | 1483 | static void |
fba45db2 | 1484 | current_frame_command (char *level_exp, int from_tty) |
c906108c | 1485 | { |
6e7f8b9c | 1486 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c5aa993b | 1487 | error ("No stack."); |
7789c6f5 | 1488 | print_stack_frame (deprecated_selected_frame, |
6e7f8b9c | 1489 | frame_relative_level (deprecated_selected_frame), 1); |
7a292a7a | 1490 | } |
c906108c SS |
1491 | |
1492 | /* Select the frame up one or COUNT stack levels | |
1493 | from the previously selected frame, and print it briefly. */ | |
1494 | ||
1495 | /* ARGSUSED */ | |
1496 | static void | |
fba45db2 | 1497 | up_silently_base (char *count_exp) |
c906108c SS |
1498 | { |
1499 | register struct frame_info *fi; | |
1500 | int count = 1, count1; | |
1501 | if (count_exp) | |
bb518678 | 1502 | count = parse_and_eval_long (count_exp); |
c906108c | 1503 | count1 = count; |
c5aa993b | 1504 | |
6e7f8b9c | 1505 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c906108c SS |
1506 | error ("No stack."); |
1507 | ||
6e7f8b9c | 1508 | fi = find_relative_frame (deprecated_selected_frame, &count1); |
c906108c SS |
1509 | if (count1 != 0 && count_exp == 0) |
1510 | error ("Initial frame selected; you cannot go up."); | |
0f7d239c | 1511 | select_frame (fi); |
6e7f8b9c | 1512 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); |
c906108c SS |
1513 | } |
1514 | ||
1515 | static void | |
fba45db2 | 1516 | up_silently_command (char *count_exp, int from_tty) |
c906108c | 1517 | { |
c5aa993b | 1518 | up_silently_base (count_exp); |
c906108c SS |
1519 | } |
1520 | ||
1521 | static void | |
fba45db2 | 1522 | up_command (char *count_exp, int from_tty) |
c906108c SS |
1523 | { |
1524 | up_silently_base (count_exp); | |
7789c6f5 EZ |
1525 | print_stack_frame (deprecated_selected_frame, |
1526 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1527 | } |
1528 | ||
1529 | /* Select the frame down one or COUNT stack levels | |
1530 | from the previously selected frame, and print it briefly. */ | |
1531 | ||
1532 | /* ARGSUSED */ | |
1533 | static void | |
fba45db2 | 1534 | down_silently_base (char *count_exp) |
c906108c SS |
1535 | { |
1536 | register struct frame_info *frame; | |
1537 | int count = -1, count1; | |
1538 | if (count_exp) | |
bb518678 | 1539 | count = -parse_and_eval_long (count_exp); |
c906108c | 1540 | count1 = count; |
c5aa993b | 1541 | |
6e7f8b9c | 1542 | if (target_has_stack == 0 || deprecated_selected_frame == 0) |
c906108c SS |
1543 | error ("No stack."); |
1544 | ||
6e7f8b9c | 1545 | frame = find_relative_frame (deprecated_selected_frame, &count1); |
c906108c SS |
1546 | if (count1 != 0 && count_exp == 0) |
1547 | { | |
1548 | ||
1549 | /* We only do this if count_exp is not specified. That way "down" | |
c5aa993b JM |
1550 | means to really go down (and let me know if that is |
1551 | impossible), but "down 9999" can be used to mean go all the way | |
1552 | down without getting an error. */ | |
c906108c SS |
1553 | |
1554 | error ("Bottom (i.e., innermost) frame selected; you cannot go down."); | |
1555 | } | |
1556 | ||
0f7d239c | 1557 | select_frame (frame); |
6e7f8b9c | 1558 | selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame)); |
c906108c SS |
1559 | } |
1560 | ||
1561 | /* ARGSUSED */ | |
1562 | static void | |
fba45db2 | 1563 | down_silently_command (char *count_exp, int from_tty) |
c906108c SS |
1564 | { |
1565 | down_silently_base (count_exp); | |
c906108c SS |
1566 | } |
1567 | ||
1568 | static void | |
fba45db2 | 1569 | down_command (char *count_exp, int from_tty) |
c906108c SS |
1570 | { |
1571 | down_silently_base (count_exp); | |
7789c6f5 EZ |
1572 | print_stack_frame (deprecated_selected_frame, |
1573 | frame_relative_level (deprecated_selected_frame), 1); | |
c906108c SS |
1574 | } |
1575 | \f | |
8b93c638 | 1576 | void |
fba45db2 | 1577 | return_command (char *retval_exp, int from_tty) |
c906108c SS |
1578 | { |
1579 | struct symbol *thisfun; | |
1580 | CORE_ADDR selected_frame_addr; | |
1581 | CORE_ADDR selected_frame_pc; | |
1582 | struct frame_info *frame; | |
3d6d86c6 | 1583 | struct value *return_value = NULL; |
c906108c | 1584 | |
6e7f8b9c | 1585 | if (deprecated_selected_frame == NULL) |
c906108c | 1586 | error ("No selected frame."); |
6e7f8b9c AC |
1587 | thisfun = get_frame_function (deprecated_selected_frame); |
1588 | selected_frame_addr = get_frame_base (deprecated_selected_frame); | |
bdd78e62 | 1589 | selected_frame_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
1590 | |
1591 | /* Compute the return value (if any -- possibly getting errors here). */ | |
1592 | ||
1593 | if (retval_exp) | |
1594 | { | |
1595 | struct type *return_type = NULL; | |
1596 | ||
1597 | return_value = parse_and_eval (retval_exp); | |
1598 | ||
1599 | /* Cast return value to the return type of the function. */ | |
1600 | if (thisfun != NULL) | |
1601 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); | |
1602 | if (return_type == NULL) | |
1603 | return_type = builtin_type_int; | |
1604 | return_value = value_cast (return_type, return_value); | |
1605 | ||
1606 | /* Make sure we have fully evaluated it, since | |
c5aa993b | 1607 | it might live in the stack frame we're about to pop. */ |
c906108c SS |
1608 | if (VALUE_LAZY (return_value)) |
1609 | value_fetch_lazy (return_value); | |
1610 | } | |
1611 | ||
1612 | /* If interactive, require confirmation. */ | |
1613 | ||
1614 | if (from_tty) | |
1615 | { | |
1616 | if (thisfun != 0) | |
1617 | { | |
1618 | if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) | |
1619 | { | |
1620 | error ("Not confirmed."); | |
1621 | /* NOTREACHED */ | |
1622 | } | |
1623 | } | |
c5aa993b JM |
1624 | else if (!query ("Make selected stack frame return now? ")) |
1625 | error ("Not confirmed."); | |
c906108c SS |
1626 | } |
1627 | ||
dbe9fe58 AC |
1628 | /* FIXME: cagney/2003-01-18: Rather than pop each frame in turn, |
1629 | this code should just go straight to the relevant frame and pop | |
1630 | that. */ | |
1631 | ||
c906108c | 1632 | /* Do the real work. Pop until the specified frame is current. We |
6e7f8b9c | 1633 | use this method because the deprecated_selected_frame is not valid after |
c906108c SS |
1634 | a POP_FRAME. The pc comparison makes this work even if the |
1635 | selected frame shares its fp with another frame. */ | |
1636 | ||
8b36eed8 | 1637 | while (selected_frame_addr != get_frame_base (frame = get_current_frame ()) |
bdd78e62 | 1638 | || selected_frame_pc != get_frame_pc (frame)) |
dbe9fe58 | 1639 | frame_pop (get_current_frame ()); |
c906108c SS |
1640 | |
1641 | /* Then pop that frame. */ | |
1642 | ||
dbe9fe58 | 1643 | frame_pop (get_current_frame ()); |
c906108c SS |
1644 | |
1645 | /* Compute the return value (if any) and store in the place | |
1646 | for return values. */ | |
1647 | ||
1648 | if (retval_exp) | |
1649 | set_return_value (return_value); | |
1650 | ||
1a2aab69 PS |
1651 | /* If we are at the end of a call dummy now, pop the dummy frame too. */ |
1652 | ||
dbe9fe58 AC |
1653 | /* FIXME: cagney/2003-01-18: This is silly. Instead of popping all |
1654 | the frames except the dummy, and then, as an afterthought, | |
1655 | popping the dummy frame, this code should just pop through to the | |
1656 | dummy frame. */ | |
1657 | ||
1a2aab69 | 1658 | if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (), |
c193f6ac | 1659 | get_frame_base (get_current_frame ()))) |
dbe9fe58 | 1660 | frame_pop (get_current_frame ()); |
1a2aab69 | 1661 | |
c906108c SS |
1662 | /* If interactive, print the frame that is now current. */ |
1663 | ||
1664 | if (from_tty) | |
1665 | frame_command ("0", 1); | |
1666 | else | |
1667 | select_frame_command ("0", 0); | |
1668 | } | |
1669 | ||
1670 | /* Sets the scope to input function name, provided that the | |
1671 | function is within the current stack frame */ | |
1672 | ||
1673 | struct function_bounds | |
1674 | { | |
1675 | CORE_ADDR low, high; | |
1676 | }; | |
1677 | ||
a14ed312 | 1678 | static void func_command (char *arg, int from_tty); |
c906108c | 1679 | static void |
fba45db2 | 1680 | func_command (char *arg, int from_tty) |
c906108c SS |
1681 | { |
1682 | struct frame_info *fp; | |
1683 | int found = 0; | |
1684 | struct symtabs_and_lines sals; | |
1685 | int i; | |
1686 | int level = 1; | |
1687 | struct function_bounds *func_bounds = (struct function_bounds *) NULL; | |
1688 | ||
1689 | if (arg != (char *) NULL) | |
1690 | return; | |
1691 | ||
1692 | fp = parse_frame_specification ("0"); | |
1693 | sals = decode_line_spec (arg, 1); | |
1694 | func_bounds = (struct function_bounds *) xmalloc ( | |
1695 | sizeof (struct function_bounds) * sals.nelts); | |
1696 | for (i = 0; (i < sals.nelts && !found); i++) | |
1697 | { | |
1698 | if (sals.sals[i].pc == (CORE_ADDR) 0 || | |
1699 | find_pc_partial_function (sals.sals[i].pc, | |
1700 | (char **) NULL, | |
1701 | &func_bounds[i].low, | |
1702 | &func_bounds[i].high) == 0) | |
1703 | { | |
1704 | func_bounds[i].low = | |
1705 | func_bounds[i].high = (CORE_ADDR) NULL; | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | do | |
1710 | { | |
1711 | for (i = 0; (i < sals.nelts && !found); i++) | |
bdd78e62 AC |
1712 | found = (get_frame_pc (fp) >= func_bounds[i].low && |
1713 | get_frame_pc (fp) < func_bounds[i].high); | |
c906108c SS |
1714 | if (!found) |
1715 | { | |
1716 | level = 1; | |
1717 | fp = find_relative_frame (fp, &level); | |
1718 | } | |
1719 | } | |
1720 | while (!found && level == 0); | |
1721 | ||
1722 | if (func_bounds) | |
b8c9b27d | 1723 | xfree (func_bounds); |
c906108c SS |
1724 | |
1725 | if (!found) | |
1726 | printf_filtered ("'%s' not within current stack frame.\n", arg); | |
6e7f8b9c | 1727 | else if (fp != deprecated_selected_frame) |
bedfa57b | 1728 | select_and_print_frame (fp); |
c906108c SS |
1729 | } |
1730 | ||
1731 | /* Gets the language of the current frame. */ | |
1732 | ||
1733 | enum language | |
fba45db2 | 1734 | get_frame_language (void) |
c906108c SS |
1735 | { |
1736 | register struct symtab *s; | |
1737 | enum language flang; /* The language of the current frame */ | |
c5aa993b | 1738 | |
6e7f8b9c | 1739 | if (deprecated_selected_frame) |
c906108c | 1740 | { |
bdd78e62 | 1741 | s = find_pc_symtab (get_frame_pc (deprecated_selected_frame)); |
c906108c SS |
1742 | if (s) |
1743 | flang = s->language; | |
1744 | else | |
1745 | flang = language_unknown; | |
1746 | } | |
1747 | else | |
1748 | flang = language_unknown; | |
1749 | ||
1750 | return flang; | |
1751 | } | |
1752 | \f | |
1753 | void | |
fba45db2 | 1754 | _initialize_stack (void) |
c906108c | 1755 | { |
c5aa993b | 1756 | #if 0 |
c906108c SS |
1757 | backtrace_limit = 30; |
1758 | #endif | |
1759 | ||
1760 | add_com ("return", class_stack, return_command, | |
1761 | "Make selected stack frame return to its caller.\n\ | |
1762 | Control remains in the debugger, but when you continue\n\ | |
1763 | execution will resume in the frame above the one now selected.\n\ | |
1764 | If an argument is given, it is an expression for the value to return."); | |
1765 | ||
1766 | add_com ("up", class_stack, up_command, | |
1767 | "Select and print stack frame that called this one.\n\ | |
1768 | An argument says how many frames up to go."); | |
1769 | add_com ("up-silently", class_support, up_silently_command, | |
1770 | "Same as the `up' command, but does not print anything.\n\ | |
1771 | This is useful in command scripts."); | |
1772 | ||
1773 | add_com ("down", class_stack, down_command, | |
1774 | "Select and print stack frame called by this one.\n\ | |
1775 | An argument says how many frames down to go."); | |
1776 | add_com_alias ("do", "down", class_stack, 1); | |
1777 | add_com_alias ("dow", "down", class_stack, 1); | |
1778 | add_com ("down-silently", class_support, down_silently_command, | |
1779 | "Same as the `down' command, but does not print anything.\n\ | |
1780 | This is useful in command scripts."); | |
1781 | ||
1782 | add_com ("frame", class_stack, frame_command, | |
1783 | "Select and print a stack frame.\n\ | |
1784 | With no argument, print the selected stack frame. (See also \"info frame\").\n\ | |
1785 | An argument specifies the frame to select.\n\ | |
1786 | It can be a stack frame number or the address of the frame.\n\ | |
1787 | With argument, nothing is printed if input is coming from\n\ | |
1788 | a command file or a user-defined command."); | |
1789 | ||
1790 | add_com_alias ("f", "frame", class_stack, 1); | |
1791 | ||
1792 | if (xdb_commands) | |
1793 | { | |
c5aa993b JM |
1794 | add_com ("L", class_stack, current_frame_command, |
1795 | "Print the current stack frame.\n"); | |
c906108c SS |
1796 | add_com_alias ("V", "frame", class_stack, 1); |
1797 | } | |
1798 | add_com ("select-frame", class_stack, select_frame_command, | |
1799 | "Select a stack frame without printing anything.\n\ | |
1800 | An argument specifies the frame to select.\n\ | |
1801 | It can be a stack frame number or the address of the frame.\n"); | |
1802 | ||
1803 | add_com ("backtrace", class_stack, backtrace_command, | |
1804 | "Print backtrace of all stack frames, or innermost COUNT frames.\n\ | |
1805 | With a negative argument, print outermost -COUNT frames.\n\ | |
1806 | Use of the 'full' qualifier also prints the values of the local variables.\n"); | |
1807 | add_com_alias ("bt", "backtrace", class_stack, 0); | |
1808 | if (xdb_commands) | |
1809 | { | |
1810 | add_com_alias ("t", "backtrace", class_stack, 0); | |
1811 | add_com ("T", class_stack, backtrace_full_command, | |
c5aa993b | 1812 | "Print backtrace of all stack frames, or innermost COUNT frames \n\ |
c906108c SS |
1813 | and the values of the local variables.\n\ |
1814 | With a negative argument, print outermost -COUNT frames.\n\ | |
1815 | Usage: T <count>\n"); | |
1816 | } | |
1817 | ||
1818 | add_com_alias ("where", "backtrace", class_alias, 0); | |
1819 | add_info ("stack", backtrace_command, | |
1820 | "Backtrace of the stack, or innermost COUNT frames."); | |
1821 | add_info_alias ("s", "stack", 1); | |
1822 | add_info ("frame", frame_info, | |
1823 | "All about selected stack frame, or frame at ADDR."); | |
1824 | add_info_alias ("f", "frame", 1); | |
1825 | add_info ("locals", locals_info, | |
1826 | "Local variables of current stack frame."); | |
1827 | add_info ("args", args_info, | |
1828 | "Argument variables of current stack frame."); | |
1829 | if (xdb_commands) | |
c5aa993b JM |
1830 | add_com ("l", class_info, args_plus_locals_info, |
1831 | "Argument and local variables of current stack frame."); | |
c906108c SS |
1832 | |
1833 | if (dbx_commands) | |
c5aa993b JM |
1834 | add_com ("func", class_stack, func_command, |
1835 | "Select the stack frame that contains <func>.\nUsage: func <name>\n"); | |
c906108c SS |
1836 | |
1837 | add_info ("catch", catch_info, | |
1838 | "Exceptions that can be caught in the current stack frame."); | |
1839 | ||
1840 | #if 0 | |
c5aa993b JM |
1841 | add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, |
1842 | "Specify maximum number of frames for \"backtrace\" to print by default.", | |
c906108c SS |
1843 | &setlist); |
1844 | add_info ("backtrace-limit", backtrace_limit_info, | |
c5aa993b | 1845 | "The maximum number of frames for \"backtrace\" to print by default."); |
c906108c SS |
1846 | #endif |
1847 | } |