gdb/mi/mi-cmd-stack.c

   1 /* MI Command Set - stack commands.
   2    Copyright (C) 2000-2015 Free Software Foundation, Inc.
   3    Contributed by Cygnus Solutions (a Red Hat company).
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "target.h"
  22 #include "frame.h"
  23 #include "value.h"
  24 #include "mi-cmds.h"
  25 #include "ui-out.h"
  26 #include "symtab.h"
  27 #include "block.h"
  28 #include "stack.h"
  29 #include "dictionary.h"
  30 #include "language.h"
  31 #include "valprint.h"
  32 #include "utils.h"
  33 #include "mi-getopt.h"
  34 #include "extension.h"
  35 #include <ctype.h>
  36 #include "mi-parse.h"
  37
  38 enum what_to_list { locals, arguments, all };
  39
  40 static void list_args_or_locals (enum what_to_list what,
  41                                  enum print_values values,
  42                                  struct frame_info *fi,
  43                                  int skip_unavailable);
  44
  45 /* True if we want to allow Python-based frame filters.  */
  46 static int frame_filters = 0;
  47
  48 void
  49 mi_cmd_enable_frame_filters (char *command, char **argv, int argc)
  50 {
  51   if (argc != 0)
  52     error (_("-enable-frame-filters: no arguments allowed"));
  53   frame_filters = 1;
  54 }
  55
  56 /* Print a list of the stack frames.  Args can be none, in which case
  57    we want to print the whole backtrace, or a pair of numbers
  58    specifying the frame numbers at which to start and stop the
  59    display.  If the two numbers are equal, a single frame will be
  60    displayed.  */
  61
  62 void
  63 mi_cmd_stack_list_frames (char *command, char **argv, int argc)
  64 {
  65   int frame_low;
  66   int frame_high;
  67   int i;
  68   struct cleanup *cleanup_stack;
  69   struct frame_info *fi;
  70   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
  71   int raw_arg = 0;
  72   int oind = 0;
  73   enum opt
  74     {
  75       NO_FRAME_FILTERS
  76     };
  77   static const struct mi_opt opts[] =
  78     {
  79       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
  80       { 0, 0, 0 }
  81     };
  82
  83   /* Parse arguments.  In this instance we are just looking for
  84      --no-frame-filters.  */
  85   while (1)
  86     {
  87       char *oarg;
  88       int opt = mi_getopt ("-stack-list-frames", argc, argv,
  89                            opts, &oind, &oarg);
  90       if (opt < 0)
  91         break;
  92       switch ((enum opt) opt)
  93         {
  94         case NO_FRAME_FILTERS:
  95           raw_arg = oind;
  96           break;
  97         }
  98     }
  99
 100   /* After the last option is parsed, there should either be low -
 101      high range, or no further arguments.  */
 102   if ((argc - oind != 0) && (argc - oind != 2))
 103     error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]"));
 104
 105   /* If there is a range, set it.  */
 106   if (argc - oind == 2)
 107     {
 108       frame_low = atoi (argv[0 + oind]);
 109       frame_high = atoi (argv[1 + oind]);
 110     }
 111   else
 112     {
 113       /* Called with no arguments, it means we want the whole
 114          backtrace.  */
 115       frame_low = -1;
 116       frame_high = -1;
 117     }
 118
 119   /* Let's position fi on the frame at which to start the
 120      display. Could be the innermost frame if the whole stack needs
 121      displaying, or if frame_low is 0.  */
 122   for (i = 0, fi = get_current_frame ();
 123        fi && i < frame_low;
 124        i++, fi = get_prev_frame (fi));
 125
 126   if (fi == NULL)
 127     error (_("-stack-list-frames: Not enough frames in stack."));
 128
 129   cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
 130
 131   if (! raw_arg && frame_filters)
 132     {
 133       int flags = PRINT_LEVEL | PRINT_FRAME_INFO;
 134       int py_frame_low = frame_low;
 135
 136       /* We cannot pass -1 to frame_low, as that would signify a
 137       relative backtrace from the tail of the stack.  So, in the case
 138       of frame_low == -1, assign and increment it.  */
 139       if (py_frame_low == -1)
 140         py_frame_low++;
 141
 142       result = apply_ext_lang_frame_filter (get_current_frame (), flags,
 143                                             NO_VALUES,  current_uiout,
 144                                             py_frame_low, frame_high);
 145     }
 146
 147   /* Run the inbuilt backtrace if there are no filters registered, or
 148      if "--no-frame-filters" has been specified from the command.  */
 149   if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 150     {
 151       /* Now let's print the frames up to frame_high, or until there are
 152          frames in the stack.  */
 153       for (;
 154            fi && (i <= frame_high || frame_high == -1);
 155            i++, fi = get_prev_frame (fi))
 156         {
 157           QUIT;
 158           /* Print the location and the address always, even for level 0.
 159              If args is 0, don't print the arguments.  */
 160           print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0);
 161         }
 162     }
 163
 164   do_cleanups (cleanup_stack);
 165 }
 166
 167 void
 168 mi_cmd_stack_info_depth (char *command, char **argv, int argc)
 169 {
 170   int frame_high;
 171   int i;
 172   struct frame_info *fi;
 173
 174   if (argc > 1)
 175     error (_("-stack-info-depth: Usage: [MAX_DEPTH]"));
 176
 177   if (argc == 1)
 178     frame_high = atoi (argv[0]);
 179   else
 180     /* Called with no arguments, it means we want the real depth of
 181        the stack.  */
 182     frame_high = -1;
 183
 184   for (i = 0, fi = get_current_frame ();
 185        fi && (i < frame_high || frame_high == -1);
 186        i++, fi = get_prev_frame (fi))
 187     QUIT;
 188
 189   ui_out_field_int (current_uiout, "depth", i);
 190 }
 191
 192 /* Print a list of the locals for the current frame.  With argument of
 193    0, print only the names, with argument of 1 print also the
 194    values.  */
 195
 196 void
 197 mi_cmd_stack_list_locals (char *command, char **argv, int argc)
 198 {
 199   struct frame_info *frame;
 200   int raw_arg = 0;
 201   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 202   int print_value;
 203   int oind = 0;
 204   int skip_unavailable = 0;
 205   int i;
 206
 207   if (argc > 1)
 208     {
 209       int i;
 210       enum opt
 211       {
 212         NO_FRAME_FILTERS,
 213         SKIP_UNAVAILABLE,
 214       };
 215       static const struct mi_opt opts[] =
 216         {
 217           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 218           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 219           { 0, 0, 0 }
 220         };
 221
 222       while (1)
 223         {
 224           char *oarg;
 225           /* Don't parse 'print-values' as an option.  */
 226           int opt = mi_getopt ("-stack-list-locals", argc - 1, argv,
 227                                opts, &oind, &oarg);
 228
 229           if (opt < 0)
 230             break;
 231           switch ((enum opt) opt)
 232             {
 233             case NO_FRAME_FILTERS:
 234               raw_arg = oind;
 235             case SKIP_UNAVAILABLE:
 236               skip_unavailable = 1;
 237               break;
 238             }
 239         }
 240     }
 241
 242   /* After the last option is parsed, there should be only
 243      'print-values'.  */
 244   if (argc - oind != 1)
 245     error (_("-stack-list-locals: Usage: [--no-frame-filters] "
 246              "[--skip-unavailable] PRINT_VALUES"));
 247
 248   frame = get_selected_frame (NULL);
 249   print_value = mi_parse_print_values (argv[oind]);
 250
 251    if (! raw_arg && frame_filters)
 252      {
 253        int flags = PRINT_LEVEL | PRINT_LOCALS;
 254
 255        result = apply_ext_lang_frame_filter (frame, flags, print_value,
 256                                              current_uiout, 0, 0);
 257      }
 258
 259    /* Run the inbuilt backtrace if there are no filters registered, or
 260       if "--no-frame-filters" has been specified from the command.  */
 261    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 262      {
 263        list_args_or_locals (locals, print_value, frame,
 264                             skip_unavailable);
 265      }
 266 }
 267
 268 /* Print a list of the arguments for the current frame.  With argument
 269    of 0, print only the names, with argument of 1 print also the
 270    values.  */
 271
 272 void
 273 mi_cmd_stack_list_args (char *command, char **argv, int argc)
 274 {
 275   int frame_low;
 276   int frame_high;
 277   int i;
 278   struct frame_info *fi;
 279   struct cleanup *cleanup_stack_args;
 280   enum print_values print_values;
 281   struct ui_out *uiout = current_uiout;
 282   int raw_arg = 0;
 283   int oind = 0;
 284   int skip_unavailable = 0;
 285   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 286   enum opt
 287   {
 288     NO_FRAME_FILTERS,
 289     SKIP_UNAVAILABLE,
 290   };
 291   static const struct mi_opt opts[] =
 292     {
 293       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 294       {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 295       { 0, 0, 0 }
 296     };
 297
 298   while (1)
 299     {
 300       char *oarg;
 301       int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv,
 302                                          opts, &oind, &oarg);
 303
 304       if (opt < 0)
 305         break;
 306       switch ((enum opt) opt)
 307         {
 308         case NO_FRAME_FILTERS:
 309           raw_arg = oind;
 310           break;
 311         case SKIP_UNAVAILABLE:
 312           skip_unavailable = 1;
 313           break;
 314         }
 315     }
 316
 317   if (argc - oind != 1 && argc - oind != 3)
 318     error (_("-stack-list-arguments: Usage: "   \
 319              "[--no-frame-filters] [--skip-unavailable] "
 320              "PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
 321
 322   if (argc - oind == 3)
 323     {
 324       frame_low = atoi (argv[1 + oind]);
 325       frame_high = atoi (argv[2 + oind]);
 326     }
 327   else
 328     {
 329       /* Called with no arguments, it means we want args for the whole
 330          backtrace.  */
 331       frame_low = -1;
 332       frame_high = -1;
 333     }
 334
 335   print_values = mi_parse_print_values (argv[oind]);
 336
 337   /* Let's position fi on the frame at which to start the
 338      display. Could be the innermost frame if the whole stack needs
 339      displaying, or if frame_low is 0.  */
 340   for (i = 0, fi = get_current_frame ();
 341        fi && i < frame_low;
 342        i++, fi = get_prev_frame (fi));
 343
 344   if (fi == NULL)
 345     error (_("-stack-list-arguments: Not enough frames in stack."));
 346
 347   cleanup_stack_args
 348     = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
 349
 350   if (! raw_arg && frame_filters)
 351     {
 352       int flags = PRINT_LEVEL | PRINT_ARGS;
 353       int py_frame_low = frame_low;
 354
 355       /* We cannot pass -1 to frame_low, as that would signify a
 356       relative backtrace from the tail of the stack.  So, in the case
 357       of frame_low == -1, assign and increment it.  */
 358       if (py_frame_low == -1)
 359         py_frame_low++;
 360
 361       result = apply_ext_lang_frame_filter (get_current_frame (), flags,
 362                                             print_values, current_uiout,
 363                                             py_frame_low, frame_high);
 364     }
 365
 366      /* Run the inbuilt backtrace if there are no filters registered, or
 367       if "--no-frame-filters" has been specified from the command.  */
 368    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 369      {
 370       /* Now let's print the frames up to frame_high, or until there are
 371          frames in the stack.  */
 372       for (;
 373            fi && (i <= frame_high || frame_high == -1);
 374            i++, fi = get_prev_frame (fi))
 375         {
 376           struct cleanup *cleanup_frame;
 377
 378           QUIT;
 379           cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
 380           ui_out_field_int (uiout, "level", i);
 381           list_args_or_locals (arguments, print_values, fi, skip_unavailable);
 382           do_cleanups (cleanup_frame);
 383         }
 384     }
 385   do_cleanups (cleanup_stack_args);
 386 }
 387
 388 /* Print a list of the local variables (including arguments) for the
 389    current frame.  ARGC must be 1 and ARGV[0] specify if only the names,
 390    or both names and values of the variables must be printed.  See
 391    parse_print_value for possible values.  */
 392
 393 void
 394 mi_cmd_stack_list_variables (char *command, char **argv, int argc)
 395 {
 396   struct frame_info *frame;
 397   int raw_arg = 0;
 398   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 399   int print_value;
 400   int oind = 0;
 401   int skip_unavailable = 0;
 402
 403   if (argc > 1)
 404     {
 405       int i;
 406       enum opt
 407       {
 408         NO_FRAME_FILTERS,
 409         SKIP_UNAVAILABLE,
 410       };
 411       static const struct mi_opt opts[] =
 412         {
 413           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 414           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 415           { 0, 0, 0 }
 416         };
 417
 418       while (1)
 419         {
 420           char *oarg;
 421           /* Don't parse 'print-values' as an option.  */
 422           int opt = mi_getopt ("-stack-list-variables", argc - 1,
 423                                argv, opts, &oind, &oarg);
 424           if (opt < 0)
 425             break;
 426           switch ((enum opt) opt)
 427             {
 428             case NO_FRAME_FILTERS:
 429               raw_arg = oind;
 430               break;
 431             case SKIP_UNAVAILABLE:
 432               skip_unavailable = 1;
 433               break;
 434             }
 435         }
 436     }
 437
 438   /* After the last option is parsed, there should be only
 439      'print-values'.  */
 440   if (argc - oind != 1)
 441     error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
 442              "[--skip-unavailable] PRINT_VALUES"));
 443
 444    frame = get_selected_frame (NULL);
 445    print_value = mi_parse_print_values (argv[oind]);
 446
 447    if (! raw_arg && frame_filters)
 448      {
 449        int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
 450
 451        result = apply_ext_lang_frame_filter (frame, flags, print_value,
 452                                              current_uiout, 0, 0);
 453      }
 454
 455    /* Run the inbuilt backtrace if there are no filters registered, or
 456       if "--no-frame-filters" has been specified from the command.  */
 457    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 458      {
 459        list_args_or_locals (all, print_value, frame,
 460                             skip_unavailable);
 461      }
 462 }
 463
 464 /* Print single local or argument.  ARG must be already read in.  For
 465    WHAT and VALUES see list_args_or_locals.
 466
 467    Errors are printed as if they would be the parameter value.  Use
 468    zeroed ARG iff it should not be printed according to VALUES.  If
 469    SKIP_UNAVAILABLE is true, only print ARG if it is available.  */
 470
 471 static void
 472 list_arg_or_local (const struct frame_arg *arg, enum what_to_list what,
 473                    enum print_values values, int skip_unavailable)
 474 {
 475   struct cleanup *old_chain;
 476   struct ui_out *uiout = current_uiout;
 477   struct ui_file *stb;
 478
 479   gdb_assert (!arg->val || !arg->error);
 480   gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL
 481                && arg->error == NULL)
 482               || values == PRINT_SIMPLE_VALUES
 483               || (values == PRINT_ALL_VALUES
 484                   && (arg->val != NULL || arg->error != NULL)));
 485   gdb_assert (arg->entry_kind == print_entry_values_no
 486               || (arg->entry_kind == print_entry_values_only
 487                   && (arg->val || arg->error)));
 488
 489   if (skip_unavailable && arg->val != NULL
 490       && (value_entirely_unavailable (arg->val)
 491           /* A scalar object that does not have all bits available is
 492              also considered unavailable, because all bits contribute
 493              to its representation.  */
 494           || (val_print_scalar_type_p (value_type (arg->val))
 495               && !value_bytes_available (arg->val,
 496                                          value_embedded_offset (arg->val),
 497                                          TYPE_LENGTH (value_type (arg->val))))))
 498     return;
 499
 500   stb = mem_fileopen ();
 501   old_chain = make_cleanup_ui_file_delete (stb);
 502
 503   if (values != PRINT_NO_VALUES || what == all)
 504     make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 505
 506   fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb);
 507   if (arg->entry_kind == print_entry_values_only)
 508     fputs_filtered ("@entry", stb);
 509   ui_out_field_stream (uiout, "name", stb);
 510
 511   if (what == all && SYMBOL_IS_ARGUMENT (arg->sym))
 512     ui_out_field_int (uiout, "arg", 1);
 513
 514   if (values == PRINT_SIMPLE_VALUES)
 515     {
 516       check_typedef (arg->sym->type);
 517       type_print (arg->sym->type, "", stb, -1);
 518       ui_out_field_stream (uiout, "type", stb);
 519     }
 520
 521   if (arg->val || arg->error)
 522     {
 523       volatile struct gdb_exception except;
 524
 525       if (arg->error)
 526         except.message = arg->error;
 527       else
 528         {
 529           /* TRY_CATCH has two statements, wrap it in a block.  */
 530
 531           TRY_CATCH (except, RETURN_MASK_ERROR)
 532             {
 533               struct value_print_options opts;
 534
 535               get_no_prettyformat_print_options (&opts);
 536               opts.deref_ref = 1;
 537               common_val_print (arg->val, stb, 0, &opts,
 538                                 language_def (SYMBOL_LANGUAGE (arg->sym)));
 539             }
 540         }
 541       if (except.message)
 542         fprintf_filtered (stb, _("<error reading variable: %s>"),
 543                           except.message);
 544       ui_out_field_stream (uiout, "value", stb);
 545     }
 546
 547   do_cleanups (old_chain);
 548 }
 549
 550 /* Print a list of the objects for the frame FI in a certain form,
 551    which is determined by VALUES.  The objects can be locals,
 552    arguments or both, which is determined by WHAT.  If SKIP_UNAVAILABLE
 553    is true, only print the arguments or local variables whose values
 554    are available.  */
 555
 556 static void
 557 list_args_or_locals (enum what_to_list what, enum print_values values,
 558                      struct frame_info *fi, int skip_unavailable)
 559 {
 560   const struct block *block;
 561   struct symbol *sym;
 562   struct block_iterator iter;
 563   struct cleanup *cleanup_list;
 564   struct type *type;
 565   char *name_of_result;
 566   struct ui_out *uiout = current_uiout;
 567
 568   block = get_frame_block (fi, 0);
 569
 570   switch (what)
 571     {
 572     case locals:
 573       name_of_result = "locals";
 574       break;
 575     case arguments:
 576       name_of_result = "args";
 577       break;
 578     case all:
 579       name_of_result = "variables";
 580       break;
 581     default:
 582       internal_error (__FILE__, __LINE__,
 583                       "unexpected what_to_list: %d", (int) what);
 584     }
 585
 586   cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
 587
 588   while (block != 0)
 589     {
 590       ALL_BLOCK_SYMBOLS (block, iter, sym)
 591         {
 592           int print_me = 0;
 593
 594           switch (SYMBOL_CLASS (sym))
 595             {
 596             default:
 597             case LOC_UNDEF:     /* catches errors        */
 598             case LOC_CONST:     /* constant              */
 599             case LOC_TYPEDEF:   /* local typedef         */
 600             case LOC_LABEL:     /* local label           */
 601             case LOC_BLOCK:     /* local function        */
 602             case LOC_CONST_BYTES:       /* loc. byte seq.        */
 603             case LOC_UNRESOLVED:        /* unresolved static     */
 604             case LOC_OPTIMIZED_OUT:     /* optimized out         */
 605               print_me = 0;
 606               break;
 607
 608             case LOC_ARG:       /* argument              */
 609             case LOC_REF_ARG:   /* reference arg         */
 610             case LOC_REGPARM_ADDR:      /* indirect register arg */
 611             case LOC_LOCAL:     /* stack local           */
 612             case LOC_STATIC:    /* static                */
 613             case LOC_REGISTER:  /* register              */
 614             case LOC_COMPUTED:  /* computed location     */
 615               if (what == all)
 616                 print_me = 1;
 617               else if (what == locals)
 618                 print_me = !SYMBOL_IS_ARGUMENT (sym);
 619               else
 620                 print_me = SYMBOL_IS_ARGUMENT (sym);
 621               break;
 622             }
 623           if (print_me)
 624             {
 625               struct symbol *sym2;
 626               struct frame_arg arg, entryarg;
 627
 628               if (SYMBOL_IS_ARGUMENT (sym))
 629                 sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
 630                                       block, VAR_DOMAIN,
 631                                       NULL);
 632               else
 633                 sym2 = sym;
 634               gdb_assert (sym2 != NULL);
 635
 636               memset (&arg, 0, sizeof (arg));
 637               arg.sym = sym2;
 638               arg.entry_kind = print_entry_values_no;
 639               memset (&entryarg, 0, sizeof (entryarg));
 640               entryarg.sym = sym2;
 641               entryarg.entry_kind = print_entry_values_no;
 642
 643               switch (values)
 644                 {
 645                 case PRINT_SIMPLE_VALUES:
 646                   type = check_typedef (sym2->type);
 647                   if (TYPE_CODE (type) != TYPE_CODE_ARRAY
 648                       && TYPE_CODE (type) != TYPE_CODE_STRUCT
 649                       && TYPE_CODE (type) != TYPE_CODE_UNION)
 650                     {
 651                 case PRINT_ALL_VALUES:
 652                   if (SYMBOL_IS_ARGUMENT (sym))
 653                     read_frame_arg (sym2, fi, &arg, &entryarg);
 654                   else
 655                     read_frame_local (sym2, fi, &arg);
 656                     }
 657                   break;
 658                 }
 659
 660               if (arg.entry_kind != print_entry_values_only)
 661                 list_arg_or_local (&arg, what, values, skip_unavailable);
 662               if (entryarg.entry_kind != print_entry_values_no)
 663                 list_arg_or_local (&entryarg, what, values, skip_unavailable);
 664               xfree (arg.error);
 665               xfree (entryarg.error);
 666             }
 667         }
 668
 669       if (BLOCK_FUNCTION (block))
 670         break;
 671       else
 672         block = BLOCK_SUPERBLOCK (block);
 673     }
 674   do_cleanups (cleanup_list);
 675 }
 676
 677 void
 678 mi_cmd_stack_select_frame (char *command, char **argv, int argc)
 679 {
 680   if (argc == 0 || argc > 1)
 681     error (_("-stack-select-frame: Usage: FRAME_SPEC"));
 682
 683   select_frame_command (argv[0], 1 /* not used */ );
 684 }
 685
 686 void
 687 mi_cmd_stack_info_frame (char *command, char **argv, int argc)
 688 {
 689   if (argc > 0)
 690     error (_("-stack-info-frame: No arguments allowed"));
 691
 692   print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1);
 693 }