| 1 | /* Print and select stack frames for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
| 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 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 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 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. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 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" |
| 32 | #include "source.h" |
| 33 | #include "breakpoint.h" |
| 34 | #include "demangle.h" |
| 35 | #include "inferior.h" |
| 36 | #include "annotate.h" |
| 37 | #include "ui-out.h" |
| 38 | #include "block.h" |
| 39 | #include "stack.h" |
| 40 | #include "dictionary.h" |
| 41 | #include "exceptions.h" |
| 42 | #include "reggroups.h" |
| 43 | #include "regcache.h" |
| 44 | #include "solib.h" |
| 45 | #include "valprint.h" |
| 46 | #include "gdbthread.h" |
| 47 | #include "cp-support.h" |
| 48 | #include "disasm.h" |
| 49 | #include "inline-frame.h" |
| 50 | |
| 51 | #include "gdb_assert.h" |
| 52 | #include <ctype.h> |
| 53 | #include "gdb_string.h" |
| 54 | |
| 55 | #include "psymtab.h" |
| 56 | #include "symfile.h" |
| 57 | |
| 58 | void (*deprecated_selected_frame_level_changed_hook) (int); |
| 59 | |
| 60 | /* The possible choices of "set print frame-arguments", and the value |
| 61 | of this setting. */ |
| 62 | |
| 63 | static const char *print_frame_arguments_choices[] = |
| 64 | {"all", "scalars", "none", NULL}; |
| 65 | static const char *print_frame_arguments = "scalars"; |
| 66 | |
| 67 | /* Prototypes for local functions. */ |
| 68 | |
| 69 | static void print_frame_local_vars (struct frame_info *, int, |
| 70 | struct ui_file *); |
| 71 | |
| 72 | static void print_frame (struct frame_info *frame, int print_level, |
| 73 | enum print_what print_what, int print_args, |
| 74 | struct symtab_and_line sal); |
| 75 | |
| 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; |
| 83 | \f |
| 84 | |
| 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 | |
| 109 | /* Show or print a stack frame FRAME briefly. The output is format |
| 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. */ |
| 114 | |
| 115 | void |
| 116 | print_stack_frame (struct frame_info *frame, int print_level, |
| 117 | enum print_what print_what) |
| 118 | { |
| 119 | volatile struct gdb_exception e; |
| 120 | |
| 121 | /* For mi, alway print location and address. */ |
| 122 | if (ui_out_is_mi_like_p (current_uiout)) |
| 123 | print_what = LOC_AND_ADDRESS; |
| 124 | |
| 125 | TRY_CATCH (e, RETURN_MASK_ERROR) |
| 126 | { |
| 127 | int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
| 128 | |
| 129 | print_frame_info (frame, print_level, print_what, 1 /* print_args */); |
| 130 | set_current_sal_from_frame (frame, center); |
| 131 | } |
| 132 | } |
| 133 | |
| 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). */ |
| 138 | |
| 139 | static void |
| 140 | print_frame_nameless_args (struct frame_info *frame, long start, int num, |
| 141 | int first, struct ui_file *stream) |
| 142 | { |
| 143 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 144 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 145 | int i; |
| 146 | CORE_ADDR argsaddr; |
| 147 | long arg_value; |
| 148 | |
| 149 | for (i = 0; i < num; i++) |
| 150 | { |
| 151 | QUIT; |
| 152 | argsaddr = get_frame_args_address (frame); |
| 153 | if (!argsaddr) |
| 154 | return; |
| 155 | arg_value = read_memory_integer (argsaddr + start, |
| 156 | sizeof (int), byte_order); |
| 157 | if (!first) |
| 158 | fprintf_filtered (stream, ", "); |
| 159 | fprintf_filtered (stream, "%ld", arg_value); |
| 160 | first = 0; |
| 161 | start += sizeof (int); |
| 162 | } |
| 163 | } |
| 164 | |
| 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). */ |
| 169 | |
| 170 | /* Note that currently the "number of arguments according to the |
| 171 | stack frame" is only known on VAX where i refers to the "number of |
| 172 | ints of arguments according to the stack frame". */ |
| 173 | |
| 174 | static void |
| 175 | print_frame_args (struct symbol *func, struct frame_info *frame, |
| 176 | int num, struct ui_file *stream) |
| 177 | { |
| 178 | struct ui_out *uiout = current_uiout; |
| 179 | int first = 1; |
| 180 | /* Offset of next stack argument beyond the one we have seen that is |
| 181 | at the highest offset, or -1 if we haven't come to a stack |
| 182 | argument yet. */ |
| 183 | long highest_offset = -1; |
| 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; |
| 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"); |
| 192 | |
| 193 | stb = ui_out_stream_new (uiout); |
| 194 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
| 195 | |
| 196 | if (func) |
| 197 | { |
| 198 | struct block *b = SYMBOL_BLOCK_VALUE (func); |
| 199 | struct dict_iterator iter; |
| 200 | struct symbol *sym; |
| 201 | struct value *val; |
| 202 | |
| 203 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
| 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 | |
| 210 | if (!SYMBOL_IS_ARGUMENT (sym)) |
| 211 | continue; |
| 212 | |
| 213 | switch (SYMBOL_CLASS (sym)) |
| 214 | { |
| 215 | case LOC_ARG: |
| 216 | case LOC_REF_ARG: |
| 217 | { |
| 218 | long current_offset = SYMBOL_VALUE (sym); |
| 219 | int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym)); |
| 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 | |
| 227 | /* If this is the highest offset seen yet, set |
| 228 | highest_offset. */ |
| 229 | if (highest_offset == -1 |
| 230 | || (current_offset > highest_offset)) |
| 231 | highest_offset = current_offset; |
| 232 | |
| 233 | /* Add the number of ints we're about to print to |
| 234 | args_printed. */ |
| 235 | args_printed += (arg_size + sizeof (int) - 1) / sizeof (int); |
| 236 | } |
| 237 | |
| 238 | /* We care about types of symbols, but don't need to |
| 239 | keep track of stack offsets in them. */ |
| 240 | case LOC_REGISTER: |
| 241 | case LOC_REGPARM_ADDR: |
| 242 | case LOC_COMPUTED: |
| 243 | case LOC_OPTIMIZED_OUT: |
| 244 | default: |
| 245 | break; |
| 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. |
| 251 | This includes gcc1 (not gcc2) on SPARC when passing a |
| 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). */ |
| 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? */ |
| 260 | |
| 261 | if (*SYMBOL_LINKAGE_NAME (sym)) |
| 262 | { |
| 263 | struct symbol *nsym; |
| 264 | |
| 265 | nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
| 266 | b, VAR_DOMAIN, NULL); |
| 267 | gdb_assert (nsym != NULL); |
| 268 | if (SYMBOL_CLASS (nsym) == LOC_REGISTER |
| 269 | && !SYMBOL_IS_ARGUMENT (nsym)) |
| 270 | { |
| 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. |
| 276 | |
| 277 | Reasons for using the LOC_ARG: |
| 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. |
| 286 | |
| 287 | Reasons why we might want to use the LOC_REGISTER: |
| 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. */ |
| 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), |
| 321 | SYMBOL_LANGUAGE (sym), |
| 322 | DMGL_PARAMS | DMGL_ANSI); |
| 323 | ui_out_field_stream (uiout, "name", stb); |
| 324 | annotate_arg_name_end (); |
| 325 | ui_out_text (uiout, "="); |
| 326 | |
| 327 | if (print_args) |
| 328 | { |
| 329 | volatile struct gdb_exception except; |
| 330 | |
| 331 | TRY_CATCH (except, RETURN_MASK_ERROR) |
| 332 | { |
| 333 | const struct language_defn *language; |
| 334 | struct value_print_options opts; |
| 335 | |
| 336 | /* Avoid value_print because it will deref ref parameters. |
| 337 | We just want to print their addresses. Print ??? for |
| 338 | args whose address we do not know. We pass 2 as |
| 339 | "recurse" to val_print because our standard indentation |
| 340 | here is 4 spaces, and val_print indents 2 for each |
| 341 | recurse. */ |
| 342 | val = read_var_value (sym, frame); |
| 343 | |
| 344 | annotate_arg_value (value_type (val)); |
| 345 | |
| 346 | /* Use the appropriate language to display our symbol, |
| 347 | unless the user forced the language to a specific |
| 348 | language. */ |
| 349 | if (language_mode == language_mode_auto) |
| 350 | language = language_def (SYMBOL_LANGUAGE (sym)); |
| 351 | else |
| 352 | language = current_language; |
| 353 | |
| 354 | get_raw_print_options (&opts); |
| 355 | opts.deref_ref = 0; |
| 356 | opts.summary = summary; |
| 357 | common_val_print (val, stb->stream, 2, &opts, language); |
| 358 | ui_out_field_stream (uiout, "value", stb); |
| 359 | } |
| 360 | if (except.reason < 0) |
| 361 | { |
| 362 | fprintf_filtered (stb->stream, |
| 363 | _("<error reading variable: %s>"), |
| 364 | except.message); |
| 365 | ui_out_field_stream (uiout, "value", stb); |
| 366 | } |
| 367 | } |
| 368 | else |
| 369 | ui_out_text (uiout, "..."); |
| 370 | |
| 371 | |
| 372 | /* Invoke ui_out_tuple_end. */ |
| 373 | do_cleanups (list_chain); |
| 374 | |
| 375 | annotate_arg_end (); |
| 376 | |
| 377 | first = 0; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | /* Don't print nameless args in situations where we don't know |
| 382 | enough about the stack to find them. */ |
| 383 | if (num != -1) |
| 384 | { |
| 385 | long start; |
| 386 | |
| 387 | if (highest_offset == -1) |
| 388 | start = gdbarch_frame_args_skip (get_frame_arch (frame)); |
| 389 | else |
| 390 | start = highest_offset; |
| 391 | |
| 392 | print_frame_nameless_args (frame, start, num - args_printed, |
| 393 | first, stream); |
| 394 | } |
| 395 | |
| 396 | do_cleanups (old_chain); |
| 397 | } |
| 398 | |
| 399 | /* Set the current source and line to the location given by frame |
| 400 | FRAME, if possible. When CENTER is true, adjust so the relevant |
| 401 | line is in the center of the next 'list'. */ |
| 402 | |
| 403 | void |
| 404 | set_current_sal_from_frame (struct frame_info *frame, int center) |
| 405 | { |
| 406 | struct symtab_and_line sal; |
| 407 | |
| 408 | find_frame_sal (frame, &sal); |
| 409 | if (sal.symtab) |
| 410 | { |
| 411 | if (center) |
| 412 | sal.line = max (sal.line - get_lines_to_list () / 2, 1); |
| 413 | set_current_source_symtab_and_line (&sal); |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /* If ON, GDB will display disassembly of the next source line when |
| 418 | execution of the program being debugged stops. |
| 419 | If AUTO (which is the default), or there's no line info to determine |
| 420 | the source line of the next instruction, display disassembly of next |
| 421 | instruction instead. */ |
| 422 | |
| 423 | static enum auto_boolean disassemble_next_line; |
| 424 | |
| 425 | static void |
| 426 | show_disassemble_next_line (struct ui_file *file, int from_tty, |
| 427 | struct cmd_list_element *c, |
| 428 | const char *value) |
| 429 | { |
| 430 | fprintf_filtered (file, |
| 431 | _("Debugger's willingness to use " |
| 432 | "disassemble-next-line is %s.\n"), |
| 433 | value); |
| 434 | } |
| 435 | |
| 436 | /* Use TRY_CATCH to catch the exception from the gdb_disassembly |
| 437 | because it will be broken by filter sometime. */ |
| 438 | |
| 439 | static void |
| 440 | do_gdb_disassembly (struct gdbarch *gdbarch, |
| 441 | int how_many, CORE_ADDR low, CORE_ADDR high) |
| 442 | { |
| 443 | volatile struct gdb_exception exception; |
| 444 | |
| 445 | TRY_CATCH (exception, RETURN_MASK_ERROR) |
| 446 | { |
| 447 | gdb_disassembly (gdbarch, current_uiout, 0, |
| 448 | DISASSEMBLY_RAW_INSN, how_many, |
| 449 | low, high); |
| 450 | } |
| 451 | if (exception.reason < 0) |
| 452 | { |
| 453 | /* If an exception was thrown while doing the disassembly, print |
| 454 | the error message, to give the user a clue of what happened. */ |
| 455 | exception_print (gdb_stderr, exception); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | /* Print information about frame FRAME. The output is format according |
| 460 | to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of |
| 461 | PRINT_WHAT is: |
| 462 | |
| 463 | SRC_LINE: Print only source line. |
| 464 | LOCATION: Print only location. |
| 465 | LOC_AND_SRC: Print location and source line. |
| 466 | |
| 467 | Used in "where" output, and to emit breakpoint or step |
| 468 | messages. */ |
| 469 | |
| 470 | void |
| 471 | print_frame_info (struct frame_info *frame, int print_level, |
| 472 | enum print_what print_what, int print_args) |
| 473 | { |
| 474 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 475 | struct symtab_and_line sal; |
| 476 | int source_print; |
| 477 | int location_print; |
| 478 | struct ui_out *uiout = current_uiout; |
| 479 | |
| 480 | if (get_frame_type (frame) == DUMMY_FRAME |
| 481 | || get_frame_type (frame) == SIGTRAMP_FRAME |
| 482 | || get_frame_type (frame) == ARCH_FRAME) |
| 483 | { |
| 484 | struct cleanup *uiout_cleanup |
| 485 | = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
| 486 | |
| 487 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
| 488 | gdbarch, get_frame_pc (frame)); |
| 489 | |
| 490 | /* Do this regardless of SOURCE because we don't have any source |
| 491 | to list for this frame. */ |
| 492 | if (print_level) |
| 493 | { |
| 494 | ui_out_text (uiout, "#"); |
| 495 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
| 496 | frame_relative_level (frame)); |
| 497 | } |
| 498 | if (ui_out_is_mi_like_p (uiout)) |
| 499 | { |
| 500 | annotate_frame_address (); |
| 501 | ui_out_field_core_addr (uiout, "addr", |
| 502 | gdbarch, get_frame_pc (frame)); |
| 503 | annotate_frame_address_end (); |
| 504 | } |
| 505 | |
| 506 | if (get_frame_type (frame) == DUMMY_FRAME) |
| 507 | { |
| 508 | annotate_function_call (); |
| 509 | ui_out_field_string (uiout, "func", "<function called from gdb>"); |
| 510 | } |
| 511 | else if (get_frame_type (frame) == SIGTRAMP_FRAME) |
| 512 | { |
| 513 | annotate_signal_handler_caller (); |
| 514 | ui_out_field_string (uiout, "func", "<signal handler called>"); |
| 515 | } |
| 516 | else if (get_frame_type (frame) == ARCH_FRAME) |
| 517 | { |
| 518 | ui_out_field_string (uiout, "func", "<cross-architecture call>"); |
| 519 | } |
| 520 | ui_out_text (uiout, "\n"); |
| 521 | annotate_frame_end (); |
| 522 | |
| 523 | do_cleanups (uiout_cleanup); |
| 524 | return; |
| 525 | } |
| 526 | |
| 527 | /* If FRAME is not the innermost frame, that normally means that |
| 528 | FRAME->pc points to *after* the call instruction, and we want to |
| 529 | get the line containing the call, never the next line. But if |
| 530 | the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the |
| 531 | next frame was not entered as the result of a call, and we want |
| 532 | to get the line containing FRAME->pc. */ |
| 533 | find_frame_sal (frame, &sal); |
| 534 | |
| 535 | location_print = (print_what == LOCATION |
| 536 | || print_what == LOC_AND_ADDRESS |
| 537 | || print_what == SRC_AND_LOC); |
| 538 | |
| 539 | if (location_print || !sal.symtab) |
| 540 | print_frame (frame, print_level, print_what, print_args, sal); |
| 541 | |
| 542 | source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC); |
| 543 | |
| 544 | /* If disassemble-next-line is set to auto or on and doesn't have |
| 545 | the line debug messages for $pc, output the next instruction. */ |
| 546 | if ((disassemble_next_line == AUTO_BOOLEAN_AUTO |
| 547 | || disassemble_next_line == AUTO_BOOLEAN_TRUE) |
| 548 | && source_print && !sal.symtab) |
| 549 | do_gdb_disassembly (get_frame_arch (frame), 1, |
| 550 | get_frame_pc (frame), get_frame_pc (frame) + 1); |
| 551 | |
| 552 | if (source_print && sal.symtab) |
| 553 | { |
| 554 | int done = 0; |
| 555 | int mid_statement = ((print_what == SRC_LINE) |
| 556 | && frame_show_address (frame, sal)); |
| 557 | |
| 558 | if (annotation_level) |
| 559 | done = identify_source_line (sal.symtab, sal.line, mid_statement, |
| 560 | get_frame_pc (frame)); |
| 561 | if (!done) |
| 562 | { |
| 563 | if (deprecated_print_frame_info_listing_hook) |
| 564 | deprecated_print_frame_info_listing_hook (sal.symtab, |
| 565 | sal.line, |
| 566 | sal.line + 1, 0); |
| 567 | else |
| 568 | { |
| 569 | struct value_print_options opts; |
| 570 | |
| 571 | get_user_print_options (&opts); |
| 572 | /* We used to do this earlier, but that is clearly |
| 573 | wrong. This function is used by many different |
| 574 | parts of gdb, including normal_stop in infrun.c, |
| 575 | which uses this to print out the current PC |
| 576 | when we stepi/nexti into the middle of a source |
| 577 | line. Only the command line really wants this |
| 578 | behavior. Other UIs probably would like the |
| 579 | ability to decide for themselves if it is desired. */ |
| 580 | if (opts.addressprint && mid_statement) |
| 581 | { |
| 582 | ui_out_field_core_addr (uiout, "addr", |
| 583 | gdbarch, get_frame_pc (frame)); |
| 584 | ui_out_text (uiout, "\t"); |
| 585 | } |
| 586 | |
| 587 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /* If disassemble-next-line is set to on and there is line debug |
| 592 | messages, output assembly codes for next line. */ |
| 593 | if (disassemble_next_line == AUTO_BOOLEAN_TRUE) |
| 594 | do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end); |
| 595 | } |
| 596 | |
| 597 | if (print_what != LOCATION) |
| 598 | { |
| 599 | CORE_ADDR pc; |
| 600 | |
| 601 | if (get_frame_pc_if_available (frame, &pc)) |
| 602 | set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line); |
| 603 | else |
| 604 | set_default_breakpoint (0, 0, 0, 0, 0); |
| 605 | } |
| 606 | |
| 607 | annotate_frame_end (); |
| 608 | |
| 609 | gdb_flush (gdb_stdout); |
| 610 | } |
| 611 | |
| 612 | /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function |
| 613 | corresponding to FRAME. */ |
| 614 | |
| 615 | void |
| 616 | find_frame_funname (struct frame_info *frame, char **funname, |
| 617 | enum language *funlang, struct symbol **funcp) |
| 618 | { |
| 619 | struct symbol *func; |
| 620 | |
| 621 | *funname = NULL; |
| 622 | *funlang = language_unknown; |
| 623 | if (funcp) |
| 624 | *funcp = NULL; |
| 625 | |
| 626 | func = get_frame_function (frame); |
| 627 | if (func) |
| 628 | { |
| 629 | /* In certain pathological cases, the symtabs give the wrong |
| 630 | function (when we are in the first function in a file which |
| 631 | is compiled without debugging symbols, the previous function |
| 632 | is compiled with debugging symbols, and the "foo.o" symbol |
| 633 | that is supposed to tell us where the file with debugging |
| 634 | symbols ends has been truncated by ar because it is longer |
| 635 | than 15 characters). This also occurs if the user uses asm() |
| 636 | to create a function but not stabs for it (in a file compiled |
| 637 | with -g). |
| 638 | |
| 639 | So look in the minimal symbol tables as well, and if it comes |
| 640 | up with a larger address for the function use that instead. |
| 641 | I don't think this can ever cause any problems; there |
| 642 | shouldn't be any minimal symbols in the middle of a function; |
| 643 | if this is ever changed many parts of GDB will need to be |
| 644 | changed (and we'll create a find_pc_minimal_function or some |
| 645 | such). */ |
| 646 | |
| 647 | struct minimal_symbol *msymbol = NULL; |
| 648 | |
| 649 | /* Don't attempt to do this for inlined functions, which do not |
| 650 | have a corresponding minimal symbol. */ |
| 651 | if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func))) |
| 652 | msymbol |
| 653 | = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame)); |
| 654 | |
| 655 | if (msymbol != NULL |
| 656 | && (SYMBOL_VALUE_ADDRESS (msymbol) |
| 657 | > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) |
| 658 | { |
| 659 | /* We also don't know anything about the function besides |
| 660 | its address and name. */ |
| 661 | func = 0; |
| 662 | *funname = SYMBOL_PRINT_NAME (msymbol); |
| 663 | *funlang = SYMBOL_LANGUAGE (msymbol); |
| 664 | } |
| 665 | else |
| 666 | { |
| 667 | *funname = SYMBOL_PRINT_NAME (func); |
| 668 | *funlang = SYMBOL_LANGUAGE (func); |
| 669 | if (funcp) |
| 670 | *funcp = func; |
| 671 | if (*funlang == language_cplus) |
| 672 | { |
| 673 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
| 674 | to display the demangled name that we already have |
| 675 | stored in the symbol table, but we stored a version |
| 676 | with DMGL_PARAMS turned on, and here we don't want to |
| 677 | display parameters. So remove the parameters. */ |
| 678 | char *func_only = cp_remove_params (*funname); |
| 679 | |
| 680 | if (func_only) |
| 681 | { |
| 682 | *funname = func_only; |
| 683 | make_cleanup (xfree, func_only); |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | } |
| 688 | else |
| 689 | { |
| 690 | struct minimal_symbol *msymbol; |
| 691 | CORE_ADDR pc; |
| 692 | |
| 693 | if (!get_frame_address_in_block_if_available (frame, &pc)) |
| 694 | return; |
| 695 | |
| 696 | msymbol = lookup_minimal_symbol_by_pc (pc); |
| 697 | if (msymbol != NULL) |
| 698 | { |
| 699 | *funname = SYMBOL_PRINT_NAME (msymbol); |
| 700 | *funlang = SYMBOL_LANGUAGE (msymbol); |
| 701 | } |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | static void |
| 706 | print_frame (struct frame_info *frame, int print_level, |
| 707 | enum print_what print_what, int print_args, |
| 708 | struct symtab_and_line sal) |
| 709 | { |
| 710 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 711 | struct ui_out *uiout = current_uiout; |
| 712 | char *funname = NULL; |
| 713 | enum language funlang = language_unknown; |
| 714 | struct ui_stream *stb; |
| 715 | struct cleanup *old_chain, *list_chain; |
| 716 | struct value_print_options opts; |
| 717 | struct symbol *func; |
| 718 | CORE_ADDR pc = 0; |
| 719 | int pc_p; |
| 720 | |
| 721 | pc_p = get_frame_pc_if_available (frame, &pc); |
| 722 | |
| 723 | stb = ui_out_stream_new (uiout); |
| 724 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
| 725 | |
| 726 | find_frame_funname (frame, &funname, &funlang, &func); |
| 727 | |
| 728 | annotate_frame_begin (print_level ? frame_relative_level (frame) : 0, |
| 729 | gdbarch, pc); |
| 730 | |
| 731 | list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
| 732 | |
| 733 | if (print_level) |
| 734 | { |
| 735 | ui_out_text (uiout, "#"); |
| 736 | ui_out_field_fmt_int (uiout, 2, ui_left, "level", |
| 737 | frame_relative_level (frame)); |
| 738 | } |
| 739 | get_user_print_options (&opts); |
| 740 | if (opts.addressprint) |
| 741 | if (!sal.symtab |
| 742 | || frame_show_address (frame, sal) |
| 743 | || print_what == LOC_AND_ADDRESS) |
| 744 | { |
| 745 | annotate_frame_address (); |
| 746 | if (pc_p) |
| 747 | ui_out_field_core_addr (uiout, "addr", gdbarch, pc); |
| 748 | else |
| 749 | ui_out_field_string (uiout, "addr", "<unavailable>"); |
| 750 | annotate_frame_address_end (); |
| 751 | ui_out_text (uiout, " in "); |
| 752 | } |
| 753 | annotate_frame_function_name (); |
| 754 | fprintf_symbol_filtered (stb->stream, funname ? funname : "??", |
| 755 | funlang, DMGL_ANSI); |
| 756 | ui_out_field_stream (uiout, "func", stb); |
| 757 | ui_out_wrap_hint (uiout, " "); |
| 758 | annotate_frame_args (); |
| 759 | |
| 760 | ui_out_text (uiout, " ("); |
| 761 | if (print_args) |
| 762 | { |
| 763 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 764 | int numargs; |
| 765 | struct cleanup *args_list_chain; |
| 766 | volatile struct gdb_exception e; |
| 767 | |
| 768 | if (gdbarch_frame_num_args_p (gdbarch)) |
| 769 | { |
| 770 | numargs = gdbarch_frame_num_args (gdbarch, frame); |
| 771 | gdb_assert (numargs >= 0); |
| 772 | } |
| 773 | else |
| 774 | numargs = -1; |
| 775 | |
| 776 | args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args"); |
| 777 | TRY_CATCH (e, RETURN_MASK_ERROR) |
| 778 | { |
| 779 | print_frame_args (func, frame, numargs, gdb_stdout); |
| 780 | } |
| 781 | /* FIXME: ARGS must be a list. If one argument is a string it |
| 782 | will have " that will not be properly escaped. */ |
| 783 | /* Invoke ui_out_tuple_end. */ |
| 784 | do_cleanups (args_list_chain); |
| 785 | QUIT; |
| 786 | } |
| 787 | ui_out_text (uiout, ")"); |
| 788 | if (sal.symtab && sal.symtab->filename) |
| 789 | { |
| 790 | annotate_frame_source_begin (); |
| 791 | ui_out_wrap_hint (uiout, " "); |
| 792 | ui_out_text (uiout, " at "); |
| 793 | annotate_frame_source_file (); |
| 794 | ui_out_field_string (uiout, "file", sal.symtab->filename); |
| 795 | if (ui_out_is_mi_like_p (uiout)) |
| 796 | { |
| 797 | const char *fullname = symtab_to_fullname (sal.symtab); |
| 798 | |
| 799 | if (fullname != NULL) |
| 800 | ui_out_field_string (uiout, "fullname", fullname); |
| 801 | } |
| 802 | annotate_frame_source_file_end (); |
| 803 | ui_out_text (uiout, ":"); |
| 804 | annotate_frame_source_line (); |
| 805 | ui_out_field_int (uiout, "line", sal.line); |
| 806 | annotate_frame_source_end (); |
| 807 | } |
| 808 | |
| 809 | if (pc_p && (!funname || (!sal.symtab || !sal.symtab->filename))) |
| 810 | { |
| 811 | #ifdef PC_SOLIB |
| 812 | char *lib = PC_SOLIB (get_frame_pc (frame)); |
| 813 | #else |
| 814 | char *lib = solib_name_from_address (get_frame_program_space (frame), |
| 815 | get_frame_pc (frame)); |
| 816 | #endif |
| 817 | if (lib) |
| 818 | { |
| 819 | annotate_frame_where (); |
| 820 | ui_out_wrap_hint (uiout, " "); |
| 821 | ui_out_text (uiout, " from "); |
| 822 | ui_out_field_string (uiout, "from", lib); |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /* do_cleanups will call ui_out_tuple_end() for us. */ |
| 827 | do_cleanups (list_chain); |
| 828 | ui_out_text (uiout, "\n"); |
| 829 | do_cleanups (old_chain); |
| 830 | } |
| 831 | \f |
| 832 | |
| 833 | /* Read a frame specification in whatever the appropriate format is |
| 834 | from FRAME_EXP. Call error(), printing MESSAGE, if the |
| 835 | specification is in any way invalid (so this function never returns |
| 836 | NULL). When SEPECTED_P is non-NULL set its target to indicate that |
| 837 | the default selected frame was used. */ |
| 838 | |
| 839 | static struct frame_info * |
| 840 | parse_frame_specification_1 (const char *frame_exp, const char *message, |
| 841 | int *selected_frame_p) |
| 842 | { |
| 843 | int numargs; |
| 844 | struct value *args[4]; |
| 845 | CORE_ADDR addrs[ARRAY_SIZE (args)]; |
| 846 | |
| 847 | if (frame_exp == NULL) |
| 848 | numargs = 0; |
| 849 | else |
| 850 | { |
| 851 | numargs = 0; |
| 852 | while (1) |
| 853 | { |
| 854 | char *addr_string; |
| 855 | struct cleanup *cleanup; |
| 856 | const char *p; |
| 857 | |
| 858 | /* Skip leading white space, bail of EOL. */ |
| 859 | while (isspace (*frame_exp)) |
| 860 | frame_exp++; |
| 861 | if (!*frame_exp) |
| 862 | break; |
| 863 | |
| 864 | /* Parse the argument, extract it, save it. */ |
| 865 | for (p = frame_exp; |
| 866 | *p && !isspace (*p); |
| 867 | p++); |
| 868 | addr_string = savestring (frame_exp, p - frame_exp); |
| 869 | frame_exp = p; |
| 870 | cleanup = make_cleanup (xfree, addr_string); |
| 871 | |
| 872 | /* NOTE: Parse and evaluate expression, but do not use |
| 873 | functions such as parse_and_eval_long or |
| 874 | parse_and_eval_address to also extract the value. |
| 875 | Instead value_as_long and value_as_address are used. |
| 876 | This avoids problems with expressions that contain |
| 877 | side-effects. */ |
| 878 | if (numargs >= ARRAY_SIZE (args)) |
| 879 | error (_("Too many args in frame specification")); |
| 880 | args[numargs++] = parse_and_eval (addr_string); |
| 881 | |
| 882 | do_cleanups (cleanup); |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | /* If no args, default to the selected frame. */ |
| 887 | if (numargs == 0) |
| 888 | { |
| 889 | if (selected_frame_p != NULL) |
| 890 | (*selected_frame_p) = 1; |
| 891 | return get_selected_frame (message); |
| 892 | } |
| 893 | |
| 894 | /* None of the remaining use the selected frame. */ |
| 895 | if (selected_frame_p != NULL) |
| 896 | (*selected_frame_p) = 0; |
| 897 | |
| 898 | /* Assume the single arg[0] is an integer, and try using that to |
| 899 | select a frame relative to current. */ |
| 900 | if (numargs == 1) |
| 901 | { |
| 902 | struct frame_info *fid; |
| 903 | int level = value_as_long (args[0]); |
| 904 | |
| 905 | fid = find_relative_frame (get_current_frame (), &level); |
| 906 | if (level == 0) |
| 907 | /* find_relative_frame was successful. */ |
| 908 | return fid; |
| 909 | } |
| 910 | |
| 911 | /* Convert each value into a corresponding address. */ |
| 912 | { |
| 913 | int i; |
| 914 | |
| 915 | for (i = 0; i < numargs; i++) |
| 916 | addrs[i] = value_as_address (args[i]); |
| 917 | } |
| 918 | |
| 919 | /* Assume that the single arg[0] is an address, use that to identify |
| 920 | a frame with a matching ID. Should this also accept stack/pc or |
| 921 | stack/pc/special. */ |
| 922 | if (numargs == 1) |
| 923 | { |
| 924 | struct frame_id id = frame_id_build_wild (addrs[0]); |
| 925 | struct frame_info *fid; |
| 926 | |
| 927 | /* If (s)he specifies the frame with an address, he deserves |
| 928 | what (s)he gets. Still, give the highest one that matches. |
| 929 | (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't |
| 930 | know). */ |
| 931 | for (fid = get_current_frame (); |
| 932 | fid != NULL; |
| 933 | fid = get_prev_frame (fid)) |
| 934 | { |
| 935 | if (frame_id_eq (id, get_frame_id (fid))) |
| 936 | { |
| 937 | struct frame_info *prev_frame; |
| 938 | |
| 939 | while (1) |
| 940 | { |
| 941 | prev_frame = get_prev_frame (fid); |
| 942 | if (!prev_frame |
| 943 | || !frame_id_eq (id, get_frame_id (prev_frame))) |
| 944 | break; |
| 945 | fid = prev_frame; |
| 946 | } |
| 947 | return fid; |
| 948 | } |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | /* We couldn't identify the frame as an existing frame, but |
| 953 | perhaps we can create one with a single argument. */ |
| 954 | if (numargs == 1) |
| 955 | return create_new_frame (addrs[0], 0); |
| 956 | else if (numargs == 2) |
| 957 | return create_new_frame (addrs[0], addrs[1]); |
| 958 | else |
| 959 | error (_("Too many args in frame specification")); |
| 960 | } |
| 961 | |
| 962 | static struct frame_info * |
| 963 | parse_frame_specification (char *frame_exp) |
| 964 | { |
| 965 | return parse_frame_specification_1 (frame_exp, NULL, NULL); |
| 966 | } |
| 967 | |
| 968 | /* Print verbosely the selected frame or the frame at address |
| 969 | ADDR_EXP. Absolutely all information in the frame is printed. */ |
| 970 | |
| 971 | static void |
| 972 | frame_info (char *addr_exp, int from_tty) |
| 973 | { |
| 974 | struct frame_info *fi; |
| 975 | struct symtab_and_line sal; |
| 976 | struct symbol *func; |
| 977 | struct symtab *s; |
| 978 | struct frame_info *calling_frame_info; |
| 979 | int numregs; |
| 980 | char *funname = 0; |
| 981 | enum language funlang = language_unknown; |
| 982 | const char *pc_regname; |
| 983 | int selected_frame_p; |
| 984 | struct gdbarch *gdbarch; |
| 985 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
| 986 | CORE_ADDR frame_pc; |
| 987 | int frame_pc_p; |
| 988 | CORE_ADDR caller_pc; |
| 989 | |
| 990 | fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p); |
| 991 | gdbarch = get_frame_arch (fi); |
| 992 | |
| 993 | /* Name of the value returned by get_frame_pc(). Per comments, "pc" |
| 994 | is not a good name. */ |
| 995 | if (gdbarch_pc_regnum (gdbarch) >= 0) |
| 996 | /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can |
| 997 | easily not match that of the internal value returned by |
| 998 | get_frame_pc(). */ |
| 999 | pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch)); |
| 1000 | else |
| 1001 | /* But then, this is weird to. Even without gdbarch_pc_regnum, an |
| 1002 | architectures will often have a hardware register called "pc", |
| 1003 | and that register's value, again, can easily not match |
| 1004 | get_frame_pc(). */ |
| 1005 | pc_regname = "pc"; |
| 1006 | |
| 1007 | frame_pc_p = get_frame_pc_if_available (fi, &frame_pc); |
| 1008 | find_frame_sal (fi, &sal); |
| 1009 | func = get_frame_function (fi); |
| 1010 | s = sal.symtab; |
| 1011 | if (func) |
| 1012 | { |
| 1013 | funname = SYMBOL_PRINT_NAME (func); |
| 1014 | funlang = SYMBOL_LANGUAGE (func); |
| 1015 | if (funlang == language_cplus) |
| 1016 | { |
| 1017 | /* It seems appropriate to use SYMBOL_PRINT_NAME() here, |
| 1018 | to display the demangled name that we already have |
| 1019 | stored in the symbol table, but we stored a version |
| 1020 | with DMGL_PARAMS turned on, and here we don't want to |
| 1021 | display parameters. So remove the parameters. */ |
| 1022 | char *func_only = cp_remove_params (funname); |
| 1023 | |
| 1024 | if (func_only) |
| 1025 | { |
| 1026 | funname = func_only; |
| 1027 | make_cleanup (xfree, func_only); |
| 1028 | } |
| 1029 | } |
| 1030 | } |
| 1031 | else if (frame_pc_p) |
| 1032 | { |
| 1033 | struct minimal_symbol *msymbol; |
| 1034 | |
| 1035 | msymbol = lookup_minimal_symbol_by_pc (frame_pc); |
| 1036 | if (msymbol != NULL) |
| 1037 | { |
| 1038 | funname = SYMBOL_PRINT_NAME (msymbol); |
| 1039 | funlang = SYMBOL_LANGUAGE (msymbol); |
| 1040 | } |
| 1041 | } |
| 1042 | calling_frame_info = get_prev_frame (fi); |
| 1043 | |
| 1044 | if (selected_frame_p && frame_relative_level (fi) >= 0) |
| 1045 | { |
| 1046 | printf_filtered (_("Stack level %d, frame at "), |
| 1047 | frame_relative_level (fi)); |
| 1048 | } |
| 1049 | else |
| 1050 | { |
| 1051 | printf_filtered (_("Stack frame at ")); |
| 1052 | } |
| 1053 | fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout); |
| 1054 | printf_filtered (":\n"); |
| 1055 | printf_filtered (" %s = ", pc_regname); |
| 1056 | if (frame_pc_p) |
| 1057 | fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout); |
| 1058 | else |
| 1059 | fputs_filtered ("<unavailable>", gdb_stdout); |
| 1060 | |
| 1061 | wrap_here (" "); |
| 1062 | if (funname) |
| 1063 | { |
| 1064 | printf_filtered (" in "); |
| 1065 | fprintf_symbol_filtered (gdb_stdout, funname, funlang, |
| 1066 | DMGL_ANSI | DMGL_PARAMS); |
| 1067 | } |
| 1068 | wrap_here (" "); |
| 1069 | if (sal.symtab) |
| 1070 | printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line); |
| 1071 | puts_filtered ("; "); |
| 1072 | wrap_here (" "); |
| 1073 | printf_filtered ("saved %s ", pc_regname); |
| 1074 | if (frame_unwind_caller_pc_if_available (fi, &caller_pc)) |
| 1075 | fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout); |
| 1076 | else |
| 1077 | fputs_filtered ("<unavailable>", gdb_stdout); |
| 1078 | printf_filtered ("\n"); |
| 1079 | |
| 1080 | if (calling_frame_info == NULL) |
| 1081 | { |
| 1082 | enum unwind_stop_reason reason; |
| 1083 | |
| 1084 | reason = get_frame_unwind_stop_reason (fi); |
| 1085 | if (reason != UNWIND_NO_REASON) |
| 1086 | printf_filtered (_(" Outermost frame: %s\n"), |
| 1087 | frame_stop_reason_string (reason)); |
| 1088 | } |
| 1089 | else if (get_frame_type (fi) == INLINE_FRAME) |
| 1090 | printf_filtered (" inlined into frame %d", |
| 1091 | frame_relative_level (get_prev_frame (fi))); |
| 1092 | else |
| 1093 | { |
| 1094 | printf_filtered (" called by frame at "); |
| 1095 | fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)), |
| 1096 | gdb_stdout); |
| 1097 | } |
| 1098 | if (get_next_frame (fi) && calling_frame_info) |
| 1099 | puts_filtered (","); |
| 1100 | wrap_here (" "); |
| 1101 | if (get_next_frame (fi)) |
| 1102 | { |
| 1103 | printf_filtered (" caller of frame at "); |
| 1104 | fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))), |
| 1105 | gdb_stdout); |
| 1106 | } |
| 1107 | if (get_next_frame (fi) || calling_frame_info) |
| 1108 | puts_filtered ("\n"); |
| 1109 | |
| 1110 | if (s) |
| 1111 | printf_filtered (" source language %s.\n", |
| 1112 | language_str (s->language)); |
| 1113 | |
| 1114 | { |
| 1115 | /* Address of the argument list for this frame, or 0. */ |
| 1116 | CORE_ADDR arg_list = get_frame_args_address (fi); |
| 1117 | /* Number of args for this frame, or -1 if unknown. */ |
| 1118 | int numargs; |
| 1119 | |
| 1120 | if (arg_list == 0) |
| 1121 | printf_filtered (" Arglist at unknown address.\n"); |
| 1122 | else |
| 1123 | { |
| 1124 | printf_filtered (" Arglist at "); |
| 1125 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
| 1126 | printf_filtered (","); |
| 1127 | |
| 1128 | if (!gdbarch_frame_num_args_p (gdbarch)) |
| 1129 | { |
| 1130 | numargs = -1; |
| 1131 | puts_filtered (" args: "); |
| 1132 | } |
| 1133 | else |
| 1134 | { |
| 1135 | numargs = gdbarch_frame_num_args (gdbarch, fi); |
| 1136 | gdb_assert (numargs >= 0); |
| 1137 | if (numargs == 0) |
| 1138 | puts_filtered (" no args."); |
| 1139 | else if (numargs == 1) |
| 1140 | puts_filtered (" 1 arg: "); |
| 1141 | else |
| 1142 | printf_filtered (" %d args: ", numargs); |
| 1143 | } |
| 1144 | print_frame_args (func, fi, numargs, gdb_stdout); |
| 1145 | puts_filtered ("\n"); |
| 1146 | } |
| 1147 | } |
| 1148 | { |
| 1149 | /* Address of the local variables for this frame, or 0. */ |
| 1150 | CORE_ADDR arg_list = get_frame_locals_address (fi); |
| 1151 | |
| 1152 | if (arg_list == 0) |
| 1153 | printf_filtered (" Locals at unknown address,"); |
| 1154 | else |
| 1155 | { |
| 1156 | printf_filtered (" Locals at "); |
| 1157 | fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout); |
| 1158 | printf_filtered (","); |
| 1159 | } |
| 1160 | } |
| 1161 | |
| 1162 | /* Print as much information as possible on the location of all the |
| 1163 | registers. */ |
| 1164 | { |
| 1165 | enum lval_type lval; |
| 1166 | int optimized; |
| 1167 | int unavailable; |
| 1168 | CORE_ADDR addr; |
| 1169 | int realnum; |
| 1170 | int count; |
| 1171 | int i; |
| 1172 | int need_nl = 1; |
| 1173 | |
| 1174 | /* The sp is special; what's displayed isn't the save address, but |
| 1175 | the value of the previous frame's sp. This is a legacy thing, |
| 1176 | at one stage the frame cached the previous frame's SP instead |
| 1177 | of its address, hence it was easiest to just display the cached |
| 1178 | value. */ |
| 1179 | if (gdbarch_sp_regnum (gdbarch) >= 0) |
| 1180 | { |
| 1181 | /* Find out the location of the saved stack pointer with out |
| 1182 | actually evaluating it. */ |
| 1183 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
| 1184 | &optimized, &unavailable, &lval, &addr, |
| 1185 | &realnum, NULL); |
| 1186 | if (!optimized && !unavailable && lval == not_lval) |
| 1187 | { |
| 1188 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1189 | int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch)); |
| 1190 | gdb_byte value[MAX_REGISTER_SIZE]; |
| 1191 | CORE_ADDR sp; |
| 1192 | |
| 1193 | frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch), |
| 1194 | &optimized, &unavailable, &lval, &addr, |
| 1195 | &realnum, value); |
| 1196 | /* NOTE: cagney/2003-05-22: This is assuming that the |
| 1197 | stack pointer was packed as an unsigned integer. That |
| 1198 | may or may not be valid. */ |
| 1199 | sp = extract_unsigned_integer (value, sp_size, byte_order); |
| 1200 | printf_filtered (" Previous frame's sp is "); |
| 1201 | fputs_filtered (paddress (gdbarch, sp), gdb_stdout); |
| 1202 | printf_filtered ("\n"); |
| 1203 | need_nl = 0; |
| 1204 | } |
| 1205 | else if (!optimized && !unavailable && lval == lval_memory) |
| 1206 | { |
| 1207 | printf_filtered (" Previous frame's sp at "); |
| 1208 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
| 1209 | printf_filtered ("\n"); |
| 1210 | need_nl = 0; |
| 1211 | } |
| 1212 | else if (!optimized && !unavailable && lval == lval_register) |
| 1213 | { |
| 1214 | printf_filtered (" Previous frame's sp in %s\n", |
| 1215 | gdbarch_register_name (gdbarch, realnum)); |
| 1216 | need_nl = 0; |
| 1217 | } |
| 1218 | /* else keep quiet. */ |
| 1219 | } |
| 1220 | |
| 1221 | count = 0; |
| 1222 | numregs = gdbarch_num_regs (gdbarch) |
| 1223 | + gdbarch_num_pseudo_regs (gdbarch); |
| 1224 | for (i = 0; i < numregs; i++) |
| 1225 | if (i != gdbarch_sp_regnum (gdbarch) |
| 1226 | && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
| 1227 | { |
| 1228 | /* Find out the location of the saved register without |
| 1229 | fetching the corresponding value. */ |
| 1230 | frame_register_unwind (fi, i, &optimized, &unavailable, |
| 1231 | &lval, &addr, &realnum, NULL); |
| 1232 | /* For moment, only display registers that were saved on the |
| 1233 | stack. */ |
| 1234 | if (!optimized && !unavailable && lval == lval_memory) |
| 1235 | { |
| 1236 | if (count == 0) |
| 1237 | puts_filtered (" Saved registers:\n "); |
| 1238 | else |
| 1239 | puts_filtered (","); |
| 1240 | wrap_here (" "); |
| 1241 | printf_filtered (" %s at ", |
| 1242 | gdbarch_register_name (gdbarch, i)); |
| 1243 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
| 1244 | count++; |
| 1245 | } |
| 1246 | } |
| 1247 | if (count || need_nl) |
| 1248 | puts_filtered ("\n"); |
| 1249 | } |
| 1250 | |
| 1251 | do_cleanups (back_to); |
| 1252 | } |
| 1253 | |
| 1254 | /* Print briefly all stack frames or just the innermost COUNT_EXP |
| 1255 | frames. */ |
| 1256 | |
| 1257 | static void |
| 1258 | backtrace_command_1 (char *count_exp, int show_locals, int from_tty) |
| 1259 | { |
| 1260 | struct frame_info *fi; |
| 1261 | int count; |
| 1262 | int i; |
| 1263 | struct frame_info *trailing; |
| 1264 | int trailing_level; |
| 1265 | |
| 1266 | if (!target_has_stack) |
| 1267 | error (_("No stack.")); |
| 1268 | |
| 1269 | /* The following code must do two things. First, it must set the |
| 1270 | variable TRAILING to the frame from which we should start |
| 1271 | printing. Second, it must set the variable count to the number |
| 1272 | of frames which we should print, or -1 if all of them. */ |
| 1273 | trailing = get_current_frame (); |
| 1274 | |
| 1275 | trailing_level = 0; |
| 1276 | if (count_exp) |
| 1277 | { |
| 1278 | count = parse_and_eval_long (count_exp); |
| 1279 | if (count < 0) |
| 1280 | { |
| 1281 | struct frame_info *current; |
| 1282 | |
| 1283 | count = -count; |
| 1284 | |
| 1285 | current = trailing; |
| 1286 | while (current && count--) |
| 1287 | { |
| 1288 | QUIT; |
| 1289 | current = get_prev_frame (current); |
| 1290 | } |
| 1291 | |
| 1292 | /* Will stop when CURRENT reaches the top of the stack. |
| 1293 | TRAILING will be COUNT below it. */ |
| 1294 | while (current) |
| 1295 | { |
| 1296 | QUIT; |
| 1297 | trailing = get_prev_frame (trailing); |
| 1298 | current = get_prev_frame (current); |
| 1299 | trailing_level++; |
| 1300 | } |
| 1301 | |
| 1302 | count = -1; |
| 1303 | } |
| 1304 | } |
| 1305 | else |
| 1306 | count = -1; |
| 1307 | |
| 1308 | if (info_verbose) |
| 1309 | { |
| 1310 | /* Read in symbols for all of the frames. Need to do this in a |
| 1311 | separate pass so that "Reading in symbols for xxx" messages |
| 1312 | don't screw up the appearance of the backtrace. Also if |
| 1313 | people have strong opinions against reading symbols for |
| 1314 | backtrace this may have to be an option. */ |
| 1315 | i = count; |
| 1316 | for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi)) |
| 1317 | { |
| 1318 | CORE_ADDR pc; |
| 1319 | |
| 1320 | QUIT; |
| 1321 | pc = get_frame_address_in_block (fi); |
| 1322 | find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc)); |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi)) |
| 1327 | { |
| 1328 | QUIT; |
| 1329 | |
| 1330 | /* Don't use print_stack_frame; if an error() occurs it probably |
| 1331 | means further attempts to backtrace would fail (on the other |
| 1332 | hand, perhaps the code does or could be fixed to make sure |
| 1333 | the frame->prev field gets set to NULL in that case). */ |
| 1334 | print_frame_info (fi, 1, LOCATION, 1); |
| 1335 | if (show_locals) |
| 1336 | print_frame_local_vars (fi, 1, gdb_stdout); |
| 1337 | |
| 1338 | /* Save the last frame to check for error conditions. */ |
| 1339 | trailing = fi; |
| 1340 | } |
| 1341 | |
| 1342 | /* If we've stopped before the end, mention that. */ |
| 1343 | if (fi && from_tty) |
| 1344 | printf_filtered (_("(More stack frames follow...)\n")); |
| 1345 | |
| 1346 | /* If we've run out of frames, and the reason appears to be an error |
| 1347 | condition, print it. */ |
| 1348 | if (fi == NULL && trailing != NULL) |
| 1349 | { |
| 1350 | enum unwind_stop_reason reason; |
| 1351 | |
| 1352 | reason = get_frame_unwind_stop_reason (trailing); |
| 1353 | if (reason > UNWIND_FIRST_ERROR) |
| 1354 | printf_filtered (_("Backtrace stopped: %s\n"), |
| 1355 | frame_stop_reason_string (reason)); |
| 1356 | } |
| 1357 | } |
| 1358 | |
| 1359 | static void |
| 1360 | backtrace_command (char *arg, int from_tty) |
| 1361 | { |
| 1362 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
| 1363 | int fulltrace_arg = -1, arglen = 0, argc = 0; |
| 1364 | |
| 1365 | if (arg) |
| 1366 | { |
| 1367 | char **argv; |
| 1368 | int i; |
| 1369 | |
| 1370 | argv = gdb_buildargv (arg); |
| 1371 | make_cleanup_freeargv (argv); |
| 1372 | argc = 0; |
| 1373 | for (i = 0; argv[i]; i++) |
| 1374 | { |
| 1375 | unsigned int j; |
| 1376 | |
| 1377 | for (j = 0; j < strlen (argv[i]); j++) |
| 1378 | argv[i][j] = tolower (argv[i][j]); |
| 1379 | |
| 1380 | if (fulltrace_arg < 0 && subset_compare (argv[i], "full")) |
| 1381 | fulltrace_arg = argc; |
| 1382 | else |
| 1383 | { |
| 1384 | arglen += strlen (argv[i]); |
| 1385 | argc++; |
| 1386 | } |
| 1387 | } |
| 1388 | arglen += argc; |
| 1389 | if (fulltrace_arg >= 0) |
| 1390 | { |
| 1391 | if (arglen > 0) |
| 1392 | { |
| 1393 | arg = xmalloc (arglen + 1); |
| 1394 | make_cleanup (xfree, arg); |
| 1395 | arg[0] = 0; |
| 1396 | for (i = 0; i < (argc + 1); i++) |
| 1397 | { |
| 1398 | if (i != fulltrace_arg) |
| 1399 | { |
| 1400 | strcat (arg, argv[i]); |
| 1401 | strcat (arg, " "); |
| 1402 | } |
| 1403 | } |
| 1404 | } |
| 1405 | else |
| 1406 | arg = NULL; |
| 1407 | } |
| 1408 | } |
| 1409 | |
| 1410 | backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty); |
| 1411 | |
| 1412 | do_cleanups (old_chain); |
| 1413 | } |
| 1414 | |
| 1415 | static void |
| 1416 | backtrace_full_command (char *arg, int from_tty) |
| 1417 | { |
| 1418 | backtrace_command_1 (arg, 1 /* show_locals */, from_tty); |
| 1419 | } |
| 1420 | \f |
| 1421 | |
| 1422 | /* Iterate over the local variables of a block B, calling CB with |
| 1423 | CB_DATA. */ |
| 1424 | |
| 1425 | static void |
| 1426 | iterate_over_block_locals (struct block *b, |
| 1427 | iterate_over_block_arg_local_vars_cb cb, |
| 1428 | void *cb_data) |
| 1429 | { |
| 1430 | struct dict_iterator iter; |
| 1431 | struct symbol *sym; |
| 1432 | |
| 1433 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
| 1434 | { |
| 1435 | switch (SYMBOL_CLASS (sym)) |
| 1436 | { |
| 1437 | case LOC_LOCAL: |
| 1438 | case LOC_REGISTER: |
| 1439 | case LOC_STATIC: |
| 1440 | case LOC_COMPUTED: |
| 1441 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 1442 | break; |
| 1443 | (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data); |
| 1444 | break; |
| 1445 | |
| 1446 | default: |
| 1447 | /* Ignore symbols which are not locals. */ |
| 1448 | break; |
| 1449 | } |
| 1450 | } |
| 1451 | } |
| 1452 | |
| 1453 | |
| 1454 | /* Same, but print labels. */ |
| 1455 | |
| 1456 | #if 0 |
| 1457 | /* Commented out, as the code using this function has also been |
| 1458 | commented out. FIXME:brobecker/2009-01-13: Find out why the code |
| 1459 | was commented out in the first place. The discussion introducing |
| 1460 | this change (2007-12-04: Support lexical blocks and function bodies |
| 1461 | that occupy non-contiguous address ranges) did not explain why |
| 1462 | this change was made. */ |
| 1463 | static int |
| 1464 | print_block_frame_labels (struct gdbarch *gdbarch, struct block *b, |
| 1465 | int *have_default, struct ui_file *stream) |
| 1466 | { |
| 1467 | struct dict_iterator iter; |
| 1468 | struct symbol *sym; |
| 1469 | int values_printed = 0; |
| 1470 | |
| 1471 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
| 1472 | { |
| 1473 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0) |
| 1474 | { |
| 1475 | if (*have_default) |
| 1476 | continue; |
| 1477 | *have_default = 1; |
| 1478 | } |
| 1479 | if (SYMBOL_CLASS (sym) == LOC_LABEL) |
| 1480 | { |
| 1481 | struct symtab_and_line sal; |
| 1482 | struct value_print_options opts; |
| 1483 | |
| 1484 | sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); |
| 1485 | values_printed = 1; |
| 1486 | fputs_filtered (SYMBOL_PRINT_NAME (sym), stream); |
| 1487 | get_user_print_options (&opts); |
| 1488 | if (opts.addressprint) |
| 1489 | { |
| 1490 | fprintf_filtered (stream, " "); |
| 1491 | fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)), |
| 1492 | stream); |
| 1493 | } |
| 1494 | fprintf_filtered (stream, " in file %s, line %d\n", |
| 1495 | sal.symtab->filename, sal.line); |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | return values_printed; |
| 1500 | } |
| 1501 | #endif |
| 1502 | |
| 1503 | /* Iterate over all the local variables in block B, including all its |
| 1504 | superblocks, stopping when the top-level block is reached. */ |
| 1505 | |
| 1506 | void |
| 1507 | iterate_over_block_local_vars (struct block *block, |
| 1508 | iterate_over_block_arg_local_vars_cb cb, |
| 1509 | void *cb_data) |
| 1510 | { |
| 1511 | while (block) |
| 1512 | { |
| 1513 | iterate_over_block_locals (block, cb, cb_data); |
| 1514 | /* After handling the function's top-level block, stop. Don't |
| 1515 | continue to its superblock, the block of per-file |
| 1516 | symbols. */ |
| 1517 | if (BLOCK_FUNCTION (block)) |
| 1518 | break; |
| 1519 | block = BLOCK_SUPERBLOCK (block); |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | /* Data to be passed around in the calls to the locals and args |
| 1524 | iterators. */ |
| 1525 | |
| 1526 | struct print_variable_and_value_data |
| 1527 | { |
| 1528 | struct frame_info *frame; |
| 1529 | int num_tabs; |
| 1530 | struct ui_file *stream; |
| 1531 | int values_printed; |
| 1532 | }; |
| 1533 | |
| 1534 | /* The callback for the locals and args iterators. */ |
| 1535 | |
| 1536 | static void |
| 1537 | do_print_variable_and_value (const char *print_name, |
| 1538 | struct symbol *sym, |
| 1539 | void *cb_data) |
| 1540 | { |
| 1541 | struct print_variable_and_value_data *p = cb_data; |
| 1542 | |
| 1543 | print_variable_and_value (print_name, sym, |
| 1544 | p->frame, p->stream, p->num_tabs); |
| 1545 | p->values_printed = 1; |
| 1546 | } |
| 1547 | |
| 1548 | static void |
| 1549 | print_frame_local_vars (struct frame_info *frame, int num_tabs, |
| 1550 | struct ui_file *stream) |
| 1551 | { |
| 1552 | struct print_variable_and_value_data cb_data; |
| 1553 | struct block *block; |
| 1554 | CORE_ADDR pc; |
| 1555 | |
| 1556 | if (!get_frame_pc_if_available (frame, &pc)) |
| 1557 | { |
| 1558 | fprintf_filtered (stream, |
| 1559 | _("PC unavailable, cannot determine locals.\n")); |
| 1560 | return; |
| 1561 | } |
| 1562 | |
| 1563 | block = get_frame_block (frame, 0); |
| 1564 | if (block == 0) |
| 1565 | { |
| 1566 | fprintf_filtered (stream, "No symbol table info available.\n"); |
| 1567 | return; |
| 1568 | } |
| 1569 | |
| 1570 | cb_data.frame = frame; |
| 1571 | cb_data.num_tabs = 4 * num_tabs; |
| 1572 | cb_data.stream = stream; |
| 1573 | cb_data.values_printed = 0; |
| 1574 | |
| 1575 | iterate_over_block_local_vars (block, |
| 1576 | do_print_variable_and_value, |
| 1577 | &cb_data); |
| 1578 | |
| 1579 | if (!cb_data.values_printed) |
| 1580 | fprintf_filtered (stream, _("No locals.\n")); |
| 1581 | } |
| 1582 | |
| 1583 | /* Same, but print labels. */ |
| 1584 | |
| 1585 | static void |
| 1586 | print_frame_label_vars (struct frame_info *frame, int this_level_only, |
| 1587 | struct ui_file *stream) |
| 1588 | { |
| 1589 | #if 1 |
| 1590 | fprintf_filtered (stream, "print_frame_label_vars disabled.\n"); |
| 1591 | #else |
| 1592 | struct blockvector *bl; |
| 1593 | struct block *block = get_frame_block (frame, 0); |
| 1594 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1595 | int values_printed = 0; |
| 1596 | int index, have_default = 0; |
| 1597 | char *blocks_printed; |
| 1598 | CORE_ADDR pc = get_frame_pc (frame); |
| 1599 | |
| 1600 | if (block == 0) |
| 1601 | { |
| 1602 | fprintf_filtered (stream, "No symbol table info available.\n"); |
| 1603 | return; |
| 1604 | } |
| 1605 | |
| 1606 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); |
| 1607 | blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
| 1608 | memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
| 1609 | |
| 1610 | while (block != 0) |
| 1611 | { |
| 1612 | CORE_ADDR end = BLOCK_END (block) - 4; |
| 1613 | int last_index; |
| 1614 | |
| 1615 | if (bl != blockvector_for_pc (end, &index)) |
| 1616 | error (_("blockvector blotch")); |
| 1617 | if (BLOCKVECTOR_BLOCK (bl, index) != block) |
| 1618 | error (_("blockvector botch")); |
| 1619 | last_index = BLOCKVECTOR_NBLOCKS (bl); |
| 1620 | index += 1; |
| 1621 | |
| 1622 | /* Don't print out blocks that have gone by. */ |
| 1623 | while (index < last_index |
| 1624 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) |
| 1625 | index++; |
| 1626 | |
| 1627 | while (index < last_index |
| 1628 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) |
| 1629 | { |
| 1630 | if (blocks_printed[index] == 0) |
| 1631 | { |
| 1632 | if (print_block_frame_labels (gdbarch, |
| 1633 | BLOCKVECTOR_BLOCK (bl, index), |
| 1634 | &have_default, stream)) |
| 1635 | values_printed = 1; |
| 1636 | blocks_printed[index] = 1; |
| 1637 | } |
| 1638 | index++; |
| 1639 | } |
| 1640 | if (have_default) |
| 1641 | return; |
| 1642 | if (values_printed && this_level_only) |
| 1643 | return; |
| 1644 | |
| 1645 | /* After handling the function's top-level block, stop. Don't |
| 1646 | continue to its superblock, the block of per-file symbols. |
| 1647 | Also do not continue to the containing function of an inlined |
| 1648 | function. */ |
| 1649 | if (BLOCK_FUNCTION (block)) |
| 1650 | break; |
| 1651 | block = BLOCK_SUPERBLOCK (block); |
| 1652 | } |
| 1653 | |
| 1654 | if (!values_printed && !this_level_only) |
| 1655 | fprintf_filtered (stream, _("No catches.\n")); |
| 1656 | #endif |
| 1657 | } |
| 1658 | |
| 1659 | void |
| 1660 | locals_info (char *args, int from_tty) |
| 1661 | { |
| 1662 | print_frame_local_vars (get_selected_frame (_("No frame selected.")), |
| 1663 | 0, gdb_stdout); |
| 1664 | } |
| 1665 | |
| 1666 | static void |
| 1667 | catch_info (char *ignore, int from_tty) |
| 1668 | { |
| 1669 | /* Assume g++ compiled code; old GDB 4.16 behaviour. */ |
| 1670 | print_frame_label_vars (get_selected_frame (_("No frame selected.")), |
| 1671 | 0, gdb_stdout); |
| 1672 | } |
| 1673 | |
| 1674 | /* Iterate over all the argument variables in block B. |
| 1675 | |
| 1676 | Returns 1 if any argument was walked; 0 otherwise. */ |
| 1677 | |
| 1678 | void |
| 1679 | iterate_over_block_arg_vars (struct block *b, |
| 1680 | iterate_over_block_arg_local_vars_cb cb, |
| 1681 | void *cb_data) |
| 1682 | { |
| 1683 | struct dict_iterator iter; |
| 1684 | struct symbol *sym, *sym2; |
| 1685 | |
| 1686 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
| 1687 | { |
| 1688 | /* Don't worry about things which aren't arguments. */ |
| 1689 | if (SYMBOL_IS_ARGUMENT (sym)) |
| 1690 | { |
| 1691 | /* We have to look up the symbol because arguments can have |
| 1692 | two entries (one a parameter, one a local) and the one we |
| 1693 | want is the local, which lookup_symbol will find for us. |
| 1694 | This includes gcc1 (not gcc2) on the sparc when passing a |
| 1695 | small structure and gcc2 when the argument type is float |
| 1696 | and it is passed as a double and converted to float by |
| 1697 | the prologue (in the latter case the type of the LOC_ARG |
| 1698 | symbol is double and the type of the LOC_LOCAL symbol is |
| 1699 | float). There are also LOC_ARG/LOC_REGISTER pairs which |
| 1700 | are not combined in symbol-reading. */ |
| 1701 | |
| 1702 | sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), |
| 1703 | b, VAR_DOMAIN, NULL); |
| 1704 | (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data); |
| 1705 | } |
| 1706 | } |
| 1707 | } |
| 1708 | |
| 1709 | static void |
| 1710 | print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream) |
| 1711 | { |
| 1712 | struct print_variable_and_value_data cb_data; |
| 1713 | struct symbol *func; |
| 1714 | CORE_ADDR pc; |
| 1715 | |
| 1716 | if (!get_frame_pc_if_available (frame, &pc)) |
| 1717 | { |
| 1718 | fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n")); |
| 1719 | return; |
| 1720 | } |
| 1721 | |
| 1722 | func = get_frame_function (frame); |
| 1723 | if (func == NULL) |
| 1724 | { |
| 1725 | fprintf_filtered (stream, _("No symbol table info available.\n")); |
| 1726 | return; |
| 1727 | } |
| 1728 | |
| 1729 | cb_data.frame = frame; |
| 1730 | cb_data.num_tabs = 0; |
| 1731 | cb_data.stream = gdb_stdout; |
| 1732 | cb_data.values_printed = 0; |
| 1733 | |
| 1734 | iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func), |
| 1735 | do_print_variable_and_value, &cb_data); |
| 1736 | |
| 1737 | if (!cb_data.values_printed) |
| 1738 | fprintf_filtered (stream, _("No arguments.\n")); |
| 1739 | } |
| 1740 | |
| 1741 | void |
| 1742 | args_info (char *ignore, int from_tty) |
| 1743 | { |
| 1744 | print_frame_arg_vars (get_selected_frame (_("No frame selected.")), |
| 1745 | gdb_stdout); |
| 1746 | } |
| 1747 | |
| 1748 | |
| 1749 | static void |
| 1750 | args_plus_locals_info (char *ignore, int from_tty) |
| 1751 | { |
| 1752 | args_info (ignore, from_tty); |
| 1753 | locals_info (ignore, from_tty); |
| 1754 | } |
| 1755 | \f |
| 1756 | |
| 1757 | /* Select frame FRAME. Also print the stack frame and show the source |
| 1758 | if this is the tui version. */ |
| 1759 | static void |
| 1760 | select_and_print_frame (struct frame_info *frame) |
| 1761 | { |
| 1762 | select_frame (frame); |
| 1763 | if (frame) |
| 1764 | print_stack_frame (frame, 1, SRC_AND_LOC); |
| 1765 | } |
| 1766 | \f |
| 1767 | /* Return the symbol-block in which the selected frame is executing. |
| 1768 | Can return zero under various legitimate circumstances. |
| 1769 | |
| 1770 | If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the relevant |
| 1771 | code address within the block returned. We use this to decide |
| 1772 | which macros are in scope. */ |
| 1773 | |
| 1774 | struct block * |
| 1775 | get_selected_block (CORE_ADDR *addr_in_block) |
| 1776 | { |
| 1777 | if (!has_stack_frames ()) |
| 1778 | return 0; |
| 1779 | |
| 1780 | return get_frame_block (get_selected_frame (NULL), addr_in_block); |
| 1781 | } |
| 1782 | |
| 1783 | /* Find a frame a certain number of levels away from FRAME. |
| 1784 | LEVEL_OFFSET_PTR points to an int containing the number of levels. |
| 1785 | Positive means go to earlier frames (up); negative, the reverse. |
| 1786 | The int that contains the number of levels is counted toward |
| 1787 | zero as the frames for those levels are found. |
| 1788 | If the top or bottom frame is reached, that frame is returned, |
| 1789 | but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates |
| 1790 | how much farther the original request asked to go. */ |
| 1791 | |
| 1792 | struct frame_info * |
| 1793 | find_relative_frame (struct frame_info *frame, int *level_offset_ptr) |
| 1794 | { |
| 1795 | /* Going up is simple: just call get_prev_frame enough times or |
| 1796 | until the initial frame is reached. */ |
| 1797 | while (*level_offset_ptr > 0) |
| 1798 | { |
| 1799 | struct frame_info *prev = get_prev_frame (frame); |
| 1800 | |
| 1801 | if (!prev) |
| 1802 | break; |
| 1803 | (*level_offset_ptr)--; |
| 1804 | frame = prev; |
| 1805 | } |
| 1806 | |
| 1807 | /* Going down is just as simple. */ |
| 1808 | while (*level_offset_ptr < 0) |
| 1809 | { |
| 1810 | struct frame_info *next = get_next_frame (frame); |
| 1811 | |
| 1812 | if (!next) |
| 1813 | break; |
| 1814 | (*level_offset_ptr)++; |
| 1815 | frame = next; |
| 1816 | } |
| 1817 | |
| 1818 | return frame; |
| 1819 | } |
| 1820 | |
| 1821 | /* The "select_frame" command. With no argument this is a NOP. |
| 1822 | Select the frame at level LEVEL_EXP if it is a valid level. |
| 1823 | Otherwise, treat LEVEL_EXP as an address expression and select it. |
| 1824 | |
| 1825 | See parse_frame_specification for more info on proper frame |
| 1826 | expressions. */ |
| 1827 | |
| 1828 | void |
| 1829 | select_frame_command (char *level_exp, int from_tty) |
| 1830 | { |
| 1831 | select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL)); |
| 1832 | } |
| 1833 | |
| 1834 | /* The "frame" command. With no argument, print the selected frame |
| 1835 | briefly. With an argument, behave like select_frame and then print |
| 1836 | the selected frame. */ |
| 1837 | |
| 1838 | static void |
| 1839 | frame_command (char *level_exp, int from_tty) |
| 1840 | { |
| 1841 | select_frame_command (level_exp, from_tty); |
| 1842 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
| 1843 | } |
| 1844 | |
| 1845 | /* The XDB Compatibility command to print the current frame. */ |
| 1846 | |
| 1847 | static void |
| 1848 | current_frame_command (char *level_exp, int from_tty) |
| 1849 | { |
| 1850 | print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC); |
| 1851 | } |
| 1852 | |
| 1853 | /* Select the frame up one or COUNT_EXP stack levels from the |
| 1854 | previously selected frame, and print it briefly. */ |
| 1855 | |
| 1856 | static void |
| 1857 | up_silently_base (char *count_exp) |
| 1858 | { |
| 1859 | struct frame_info *frame; |
| 1860 | int count = 1; |
| 1861 | |
| 1862 | if (count_exp) |
| 1863 | count = parse_and_eval_long (count_exp); |
| 1864 | |
| 1865 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
| 1866 | if (count != 0 && count_exp == NULL) |
| 1867 | error (_("Initial frame selected; you cannot go up.")); |
| 1868 | select_frame (frame); |
| 1869 | } |
| 1870 | |
| 1871 | static void |
| 1872 | up_silently_command (char *count_exp, int from_tty) |
| 1873 | { |
| 1874 | up_silently_base (count_exp); |
| 1875 | } |
| 1876 | |
| 1877 | static void |
| 1878 | up_command (char *count_exp, int from_tty) |
| 1879 | { |
| 1880 | up_silently_base (count_exp); |
| 1881 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
| 1882 | } |
| 1883 | |
| 1884 | /* Select the frame down one or COUNT_EXP stack levels from the previously |
| 1885 | selected frame, and print it briefly. */ |
| 1886 | |
| 1887 | static void |
| 1888 | down_silently_base (char *count_exp) |
| 1889 | { |
| 1890 | struct frame_info *frame; |
| 1891 | int count = -1; |
| 1892 | |
| 1893 | if (count_exp) |
| 1894 | count = -parse_and_eval_long (count_exp); |
| 1895 | |
| 1896 | frame = find_relative_frame (get_selected_frame ("No stack."), &count); |
| 1897 | if (count != 0 && count_exp == NULL) |
| 1898 | { |
| 1899 | /* We only do this if COUNT_EXP is not specified. That way |
| 1900 | "down" means to really go down (and let me know if that is |
| 1901 | impossible), but "down 9999" can be used to mean go all the |
| 1902 | way down without getting an error. */ |
| 1903 | |
| 1904 | error (_("Bottom (innermost) frame selected; you cannot go down.")); |
| 1905 | } |
| 1906 | |
| 1907 | select_frame (frame); |
| 1908 | } |
| 1909 | |
| 1910 | static void |
| 1911 | down_silently_command (char *count_exp, int from_tty) |
| 1912 | { |
| 1913 | down_silently_base (count_exp); |
| 1914 | } |
| 1915 | |
| 1916 | static void |
| 1917 | down_command (char *count_exp, int from_tty) |
| 1918 | { |
| 1919 | down_silently_base (count_exp); |
| 1920 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
| 1921 | } |
| 1922 | \f |
| 1923 | |
| 1924 | void |
| 1925 | return_command (char *retval_exp, int from_tty) |
| 1926 | { |
| 1927 | struct frame_info *thisframe; |
| 1928 | struct gdbarch *gdbarch; |
| 1929 | struct symbol *thisfun; |
| 1930 | struct value *return_value = NULL; |
| 1931 | const char *query_prefix = ""; |
| 1932 | |
| 1933 | thisframe = get_selected_frame ("No selected frame."); |
| 1934 | thisfun = get_frame_function (thisframe); |
| 1935 | gdbarch = get_frame_arch (thisframe); |
| 1936 | |
| 1937 | if (get_frame_type (get_current_frame ()) == INLINE_FRAME) |
| 1938 | error (_("Can not force return from an inlined function.")); |
| 1939 | |
| 1940 | /* Compute the return value. If the computation triggers an error, |
| 1941 | let it bail. If the return type can't be handled, set |
| 1942 | RETURN_VALUE to NULL, and QUERY_PREFIX to an informational |
| 1943 | message. */ |
| 1944 | if (retval_exp) |
| 1945 | { |
| 1946 | struct expression *retval_expr = parse_expression (retval_exp); |
| 1947 | struct cleanup *old_chain = make_cleanup (xfree, retval_expr); |
| 1948 | struct type *return_type = NULL; |
| 1949 | |
| 1950 | /* Compute the return value. Should the computation fail, this |
| 1951 | call throws an error. */ |
| 1952 | return_value = evaluate_expression (retval_expr); |
| 1953 | |
| 1954 | /* Cast return value to the return type of the function. Should |
| 1955 | the cast fail, this call throws an error. */ |
| 1956 | if (thisfun != NULL) |
| 1957 | return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); |
| 1958 | if (return_type == NULL) |
| 1959 | { |
| 1960 | if (retval_expr->elts[0].opcode != UNOP_CAST) |
| 1961 | error (_("Return value type not available for selected " |
| 1962 | "stack frame.\n" |
| 1963 | "Please use an explicit cast of the value to return.")); |
| 1964 | return_type = value_type (return_value); |
| 1965 | } |
| 1966 | do_cleanups (old_chain); |
| 1967 | CHECK_TYPEDEF (return_type); |
| 1968 | return_value = value_cast (return_type, return_value); |
| 1969 | |
| 1970 | /* Make sure the value is fully evaluated. It may live in the |
| 1971 | stack frame we're about to pop. */ |
| 1972 | if (value_lazy (return_value)) |
| 1973 | value_fetch_lazy (return_value); |
| 1974 | |
| 1975 | if (TYPE_CODE (return_type) == TYPE_CODE_VOID) |
| 1976 | /* If the return-type is "void", don't try to find the |
| 1977 | return-value's location. However, do still evaluate the |
| 1978 | return expression so that, even when the expression result |
| 1979 | is discarded, side effects such as "return i++" still |
| 1980 | occur. */ |
| 1981 | return_value = NULL; |
| 1982 | else if (thisfun != NULL |
| 1983 | && using_struct_return (gdbarch, |
| 1984 | SYMBOL_TYPE (thisfun), return_type)) |
| 1985 | { |
| 1986 | query_prefix = "The location at which to store the " |
| 1987 | "function's return value is unknown.\n" |
| 1988 | "If you continue, the return value " |
| 1989 | "that you specified will be ignored.\n"; |
| 1990 | return_value = NULL; |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | /* Does an interactive user really want to do this? Include |
| 1995 | information, such as how well GDB can handle the return value, in |
| 1996 | the query message. */ |
| 1997 | if (from_tty) |
| 1998 | { |
| 1999 | int confirmed; |
| 2000 | |
| 2001 | if (thisfun == NULL) |
| 2002 | confirmed = query (_("%sMake selected stack frame return now? "), |
| 2003 | query_prefix); |
| 2004 | else |
| 2005 | confirmed = query (_("%sMake %s return now? "), query_prefix, |
| 2006 | SYMBOL_PRINT_NAME (thisfun)); |
| 2007 | if (!confirmed) |
| 2008 | error (_("Not confirmed")); |
| 2009 | } |
| 2010 | |
| 2011 | /* Discard the selected frame and all frames inner-to it. */ |
| 2012 | frame_pop (get_selected_frame (NULL)); |
| 2013 | |
| 2014 | /* Store RETURN_VALUE in the just-returned register set. */ |
| 2015 | if (return_value != NULL) |
| 2016 | { |
| 2017 | struct type *return_type = value_type (return_value); |
| 2018 | struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ()); |
| 2019 | struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun); |
| 2020 | |
| 2021 | gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL, |
| 2022 | NULL, NULL) |
| 2023 | == RETURN_VALUE_REGISTER_CONVENTION); |
| 2024 | gdbarch_return_value (gdbarch, func_type, return_type, |
| 2025 | get_current_regcache (), NULL /*read*/, |
| 2026 | value_contents (return_value) /*write*/); |
| 2027 | } |
| 2028 | |
| 2029 | /* If we are at the end of a call dummy now, pop the dummy frame |
| 2030 | too. */ |
| 2031 | if (get_frame_type (get_current_frame ()) == DUMMY_FRAME) |
| 2032 | frame_pop (get_current_frame ()); |
| 2033 | |
| 2034 | /* If interactive, print the frame that is now current. */ |
| 2035 | if (from_tty) |
| 2036 | frame_command ("0", 1); |
| 2037 | else |
| 2038 | select_frame_command ("0", 0); |
| 2039 | } |
| 2040 | |
| 2041 | /* Sets the scope to input function name, provided that the function |
| 2042 | is within the current stack frame. */ |
| 2043 | |
| 2044 | struct function_bounds |
| 2045 | { |
| 2046 | CORE_ADDR low, high; |
| 2047 | }; |
| 2048 | |
| 2049 | static void |
| 2050 | func_command (char *arg, int from_tty) |
| 2051 | { |
| 2052 | struct frame_info *frame; |
| 2053 | int found = 0; |
| 2054 | struct symtabs_and_lines sals; |
| 2055 | int i; |
| 2056 | int level = 1; |
| 2057 | struct function_bounds *func_bounds = NULL; |
| 2058 | |
| 2059 | if (arg != NULL) |
| 2060 | return; |
| 2061 | |
| 2062 | frame = parse_frame_specification ("0"); |
| 2063 | sals = decode_line_spec (arg, 1); |
| 2064 | func_bounds = (struct function_bounds *) xmalloc ( |
| 2065 | sizeof (struct function_bounds) * sals.nelts); |
| 2066 | for (i = 0; (i < sals.nelts && !found); i++) |
| 2067 | { |
| 2068 | if (sals.sals[i].pc == 0 |
| 2069 | || find_pc_partial_function (sals.sals[i].pc, NULL, |
| 2070 | &func_bounds[i].low, |
| 2071 | &func_bounds[i].high) == 0) |
| 2072 | { |
| 2073 | func_bounds[i].low = func_bounds[i].high = 0; |
| 2074 | } |
| 2075 | } |
| 2076 | |
| 2077 | do |
| 2078 | { |
| 2079 | for (i = 0; (i < sals.nelts && !found); i++) |
| 2080 | found = (get_frame_pc (frame) >= func_bounds[i].low |
| 2081 | && get_frame_pc (frame) < func_bounds[i].high); |
| 2082 | if (!found) |
| 2083 | { |
| 2084 | level = 1; |
| 2085 | frame = find_relative_frame (frame, &level); |
| 2086 | } |
| 2087 | } |
| 2088 | while (!found && level == 0); |
| 2089 | |
| 2090 | if (func_bounds) |
| 2091 | xfree (func_bounds); |
| 2092 | |
| 2093 | if (!found) |
| 2094 | printf_filtered (_("'%s' not within current stack frame.\n"), arg); |
| 2095 | else if (frame != get_selected_frame (NULL)) |
| 2096 | select_and_print_frame (frame); |
| 2097 | } |
| 2098 | |
| 2099 | /* Gets the language of the current frame. */ |
| 2100 | |
| 2101 | enum language |
| 2102 | get_frame_language (void) |
| 2103 | { |
| 2104 | struct frame_info *frame = deprecated_safe_get_selected_frame (); |
| 2105 | |
| 2106 | if (frame) |
| 2107 | { |
| 2108 | volatile struct gdb_exception ex; |
| 2109 | CORE_ADDR pc = 0; |
| 2110 | struct symtab *s; |
| 2111 | |
| 2112 | /* We determine the current frame language by looking up its |
| 2113 | associated symtab. To retrieve this symtab, we use the frame |
| 2114 | PC. However we cannot use the frame PC as is, because it |
| 2115 | usually points to the instruction following the "call", which |
| 2116 | is sometimes the first instruction of another function. So |
| 2117 | we rely on get_frame_address_in_block(), it provides us with |
| 2118 | a PC that is guaranteed to be inside the frame's code |
| 2119 | block. */ |
| 2120 | |
| 2121 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
| 2122 | { |
| 2123 | pc = get_frame_address_in_block (frame); |
| 2124 | } |
| 2125 | if (ex.reason < 0) |
| 2126 | { |
| 2127 | if (ex.error != NOT_AVAILABLE_ERROR) |
| 2128 | throw_exception (ex); |
| 2129 | } |
| 2130 | else |
| 2131 | { |
| 2132 | s = find_pc_symtab (pc); |
| 2133 | if (s != NULL) |
| 2134 | return s->language; |
| 2135 | } |
| 2136 | } |
| 2137 | |
| 2138 | return language_unknown; |
| 2139 | } |
| 2140 | \f |
| 2141 | |
| 2142 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 2143 | void _initialize_stack (void); |
| 2144 | |
| 2145 | void |
| 2146 | _initialize_stack (void) |
| 2147 | { |
| 2148 | add_com ("return", class_stack, return_command, _("\ |
| 2149 | Make selected stack frame return to its caller.\n\ |
| 2150 | Control remains in the debugger, but when you continue\n\ |
| 2151 | execution will resume in the frame above the one now selected.\n\ |
| 2152 | If an argument is given, it is an expression for the value to return.")); |
| 2153 | |
| 2154 | add_com ("up", class_stack, up_command, _("\ |
| 2155 | Select and print stack frame that called this one.\n\ |
| 2156 | An argument says how many frames up to go.")); |
| 2157 | add_com ("up-silently", class_support, up_silently_command, _("\ |
| 2158 | Same as the `up' command, but does not print anything.\n\ |
| 2159 | This is useful in command scripts.")); |
| 2160 | |
| 2161 | add_com ("down", class_stack, down_command, _("\ |
| 2162 | Select and print stack frame called by this one.\n\ |
| 2163 | An argument says how many frames down to go.")); |
| 2164 | add_com_alias ("do", "down", class_stack, 1); |
| 2165 | add_com_alias ("dow", "down", class_stack, 1); |
| 2166 | add_com ("down-silently", class_support, down_silently_command, _("\ |
| 2167 | Same as the `down' command, but does not print anything.\n\ |
| 2168 | This is useful in command scripts.")); |
| 2169 | |
| 2170 | add_com ("frame", class_stack, frame_command, _("\ |
| 2171 | Select and print a stack frame.\nWith no argument, \ |
| 2172 | print the selected stack frame. (See also \"info frame\").\n\ |
| 2173 | An argument specifies the frame to select.\n\ |
| 2174 | It can be a stack frame number or the address of the frame.\n\ |
| 2175 | With argument, nothing is printed if input is coming from\n\ |
| 2176 | a command file or a user-defined command.")); |
| 2177 | |
| 2178 | add_com_alias ("f", "frame", class_stack, 1); |
| 2179 | |
| 2180 | if (xdb_commands) |
| 2181 | { |
| 2182 | add_com ("L", class_stack, current_frame_command, |
| 2183 | _("Print the current stack frame.\n")); |
| 2184 | add_com_alias ("V", "frame", class_stack, 1); |
| 2185 | } |
| 2186 | add_com ("select-frame", class_stack, select_frame_command, _("\ |
| 2187 | Select a stack frame without printing anything.\n\ |
| 2188 | An argument specifies the frame to select.\n\ |
| 2189 | It can be a stack frame number or the address of the frame.\n")); |
| 2190 | |
| 2191 | add_com ("backtrace", class_stack, backtrace_command, _("\ |
| 2192 | Print backtrace of all stack frames, or innermost COUNT frames.\n\ |
| 2193 | With a negative argument, print outermost -COUNT frames.\nUse of the \ |
| 2194 | 'full' qualifier also prints the values of the local variables.\n")); |
| 2195 | add_com_alias ("bt", "backtrace", class_stack, 0); |
| 2196 | if (xdb_commands) |
| 2197 | { |
| 2198 | add_com_alias ("t", "backtrace", class_stack, 0); |
| 2199 | add_com ("T", class_stack, backtrace_full_command, _("\ |
| 2200 | Print backtrace of all stack frames, or innermost COUNT frames\n\ |
| 2201 | and the values of the local variables.\n\ |
| 2202 | With a negative argument, print outermost -COUNT frames.\n\ |
| 2203 | Usage: T <count>\n")); |
| 2204 | } |
| 2205 | |
| 2206 | add_com_alias ("where", "backtrace", class_alias, 0); |
| 2207 | add_info ("stack", backtrace_command, |
| 2208 | _("Backtrace of the stack, or innermost COUNT frames.")); |
| 2209 | add_info_alias ("s", "stack", 1); |
| 2210 | add_info ("frame", frame_info, |
| 2211 | _("All about selected stack frame, or frame at ADDR.")); |
| 2212 | add_info_alias ("f", "frame", 1); |
| 2213 | add_info ("locals", locals_info, |
| 2214 | _("Local variables of current stack frame.")); |
| 2215 | add_info ("args", args_info, |
| 2216 | _("Argument variables of current stack frame.")); |
| 2217 | if (xdb_commands) |
| 2218 | add_com ("l", class_info, args_plus_locals_info, |
| 2219 | _("Argument and local variables of current stack frame.")); |
| 2220 | |
| 2221 | if (dbx_commands) |
| 2222 | add_com ("func", class_stack, func_command, _("\ |
| 2223 | Select the stack frame that contains <func>.\n\ |
| 2224 | Usage: func <name>\n")); |
| 2225 | |
| 2226 | add_info ("catch", catch_info, |
| 2227 | _("Exceptions that can be caught in the current stack frame.")); |
| 2228 | |
| 2229 | add_setshow_enum_cmd ("frame-arguments", class_stack, |
| 2230 | print_frame_arguments_choices, &print_frame_arguments, |
| 2231 | _("Set printing of non-scalar frame arguments"), |
| 2232 | _("Show printing of non-scalar frame arguments"), |
| 2233 | NULL, NULL, NULL, &setprintlist, &showprintlist); |
| 2234 | |
| 2235 | add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack, |
| 2236 | &disassemble_next_line, _("\ |
| 2237 | Set whether to disassemble next source line or insn when execution stops."), |
| 2238 | _("\ |
| 2239 | Show whether to disassemble next source line or insn when execution stops."), |
| 2240 | _("\ |
| 2241 | If ON, GDB will display disassembly of the next source line, in addition\n\ |
| 2242 | to displaying the source line itself. If the next source line cannot\n\ |
| 2243 | be displayed (e.g., source is unavailable or there's no line info), GDB\n\ |
| 2244 | will display disassembly of next instruction instead of showing the\n\ |
| 2245 | source line.\n\ |
| 2246 | If AUTO, display disassembly of next instruction only if the source line\n\ |
| 2247 | cannot be displayed.\n\ |
| 2248 | If OFF (which is the default), never display the disassembly of the next\n\ |
| 2249 | source line."), |
| 2250 | NULL, |
| 2251 | show_disassemble_next_line, |
| 2252 | &setlist, &showlist); |
| 2253 | disassemble_next_line = AUTO_BOOLEAN_FALSE; |
| 2254 | } |