gdb/mi/mi-cmd-stack.c

   1 /* MI Command Set - stack commands.
   2    Copyright (C) 2000-2017 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 (const 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 /* Like apply_ext_lang_frame_filter, but take a print_values */
  57
  58 static enum ext_lang_bt_status
  59 mi_apply_ext_lang_frame_filter (struct frame_info *frame, int flags,
  60                                 enum print_values print_values,
  61                                 struct ui_out *out,
  62                                 int frame_low, int frame_high)
  63 {
  64   /* ext_lang_frame_args's MI options are compatible with MI print
  65      values.  */
  66   return apply_ext_lang_frame_filter (frame, flags,
  67                                       (enum ext_lang_frame_args) print_values,
  68                                       out,
  69                                       frame_low, frame_high);
  70 }
  71
  72 /* Print a list of the stack frames.  Args can be none, in which case
  73    we want to print the whole backtrace, or a pair of numbers
  74    specifying the frame numbers at which to start and stop the
  75    display.  If the two numbers are equal, a single frame will be
  76    displayed.  */
  77
  78 void
  79 mi_cmd_stack_list_frames (const char *command, char **argv, int argc)
  80 {
  81   int frame_low;
  82   int frame_high;
  83   int i;
  84   struct cleanup *cleanup_stack;
  85   struct frame_info *fi;
  86   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
  87   int raw_arg = 0;
  88   int oind = 0;
  89   enum opt
  90     {
  91       NO_FRAME_FILTERS
  92     };
  93   static const struct mi_opt opts[] =
  94     {
  95       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
  96       { 0, 0, 0 }
  97     };
  98
  99   /* Parse arguments.  In this instance we are just looking for
 100      --no-frame-filters.  */
 101   while (1)
 102     {
 103       char *oarg;
 104       int opt = mi_getopt ("-stack-list-frames", argc, argv,
 105                            opts, &oind, &oarg);
 106       if (opt < 0)
 107         break;
 108       switch ((enum opt) opt)
 109         {
 110         case NO_FRAME_FILTERS:
 111           raw_arg = oind;
 112           break;
 113         }
 114     }
 115
 116   /* After the last option is parsed, there should either be low -
 117      high range, or no further arguments.  */
 118   if ((argc - oind != 0) && (argc - oind != 2))
 119     error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]"));
 120
 121   /* If there is a range, set it.  */
 122   if (argc - oind == 2)
 123     {
 124       frame_low = atoi (argv[0 + oind]);
 125       frame_high = atoi (argv[1 + oind]);
 126     }
 127   else
 128     {
 129       /* Called with no arguments, it means we want the whole
 130          backtrace.  */
 131       frame_low = -1;
 132       frame_high = -1;
 133     }
 134
 135   /* Let's position fi on the frame at which to start the
 136      display. Could be the innermost frame if the whole stack needs
 137      displaying, or if frame_low is 0.  */
 138   for (i = 0, fi = get_current_frame ();
 139        fi && i < frame_low;
 140        i++, fi = get_prev_frame (fi));
 141
 142   if (fi == NULL)
 143     error (_("-stack-list-frames: Not enough frames in stack."));
 144
 145   cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
 146
 147   if (! raw_arg && frame_filters)
 148     {
 149       int flags = PRINT_LEVEL | PRINT_FRAME_INFO;
 150       int py_frame_low = frame_low;
 151
 152       /* We cannot pass -1 to frame_low, as that would signify a
 153       relative backtrace from the tail of the stack.  So, in the case
 154       of frame_low == -1, assign and increment it.  */
 155       if (py_frame_low == -1)
 156         py_frame_low++;
 157
 158       result = apply_ext_lang_frame_filter (get_current_frame (), flags,
 159                                             NO_VALUES,  current_uiout,
 160                                             py_frame_low, frame_high);
 161     }
 162
 163   /* Run the inbuilt backtrace if there are no filters registered, or
 164      if "--no-frame-filters" has been specified from the command.  */
 165   if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 166     {
 167       /* Now let's print the frames up to frame_high, or until there are
 168          frames in the stack.  */
 169       for (;
 170            fi && (i <= frame_high || frame_high == -1);
 171            i++, fi = get_prev_frame (fi))
 172         {
 173           QUIT;
 174           /* Print the location and the address always, even for level 0.
 175              If args is 0, don't print the arguments.  */
 176           print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0);
 177         }
 178     }
 179
 180   do_cleanups (cleanup_stack);
 181 }
 182
 183 void
 184 mi_cmd_stack_info_depth (const char *command, char **argv, int argc)
 185 {
 186   int frame_high;
 187   int i;
 188   struct frame_info *fi;
 189
 190   if (argc > 1)
 191     error (_("-stack-info-depth: Usage: [MAX_DEPTH]"));
 192
 193   if (argc == 1)
 194     frame_high = atoi (argv[0]);
 195   else
 196     /* Called with no arguments, it means we want the real depth of
 197        the stack.  */
 198     frame_high = -1;
 199
 200   for (i = 0, fi = get_current_frame ();
 201        fi && (i < frame_high || frame_high == -1);
 202        i++, fi = get_prev_frame (fi))
 203     QUIT;
 204
 205   current_uiout->field_int ("depth", i);
 206 }
 207
 208 /* Print a list of the locals for the current frame.  With argument of
 209    0, print only the names, with argument of 1 print also the
 210    values.  */
 211
 212 void
 213 mi_cmd_stack_list_locals (const char *command, char **argv, int argc)
 214 {
 215   struct frame_info *frame;
 216   int raw_arg = 0;
 217   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 218   enum print_values print_value;
 219   int oind = 0;
 220   int skip_unavailable = 0;
 221
 222   if (argc > 1)
 223     {
 224       enum opt
 225       {
 226         NO_FRAME_FILTERS,
 227         SKIP_UNAVAILABLE,
 228       };
 229       static const struct mi_opt opts[] =
 230         {
 231           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 232           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 233           { 0, 0, 0 }
 234         };
 235
 236       while (1)
 237         {
 238           char *oarg;
 239           /* Don't parse 'print-values' as an option.  */
 240           int opt = mi_getopt ("-stack-list-locals", argc - 1, argv,
 241                                opts, &oind, &oarg);
 242
 243           if (opt < 0)
 244             break;
 245           switch ((enum opt) opt)
 246             {
 247             case NO_FRAME_FILTERS:
 248               raw_arg = oind;
 249             case SKIP_UNAVAILABLE:
 250               skip_unavailable = 1;
 251               break;
 252             }
 253         }
 254     }
 255
 256   /* After the last option is parsed, there should be only
 257      'print-values'.  */
 258   if (argc - oind != 1)
 259     error (_("-stack-list-locals: Usage: [--no-frame-filters] "
 260              "[--skip-unavailable] PRINT_VALUES"));
 261
 262   frame = get_selected_frame (NULL);
 263   print_value = mi_parse_print_values (argv[oind]);
 264
 265    if (! raw_arg && frame_filters)
 266      {
 267        int flags = PRINT_LEVEL | PRINT_LOCALS;
 268
 269        result = mi_apply_ext_lang_frame_filter (frame, flags, print_value,
 270                                                 current_uiout, 0, 0);
 271      }
 272
 273    /* Run the inbuilt backtrace if there are no filters registered, or
 274       if "--no-frame-filters" has been specified from the command.  */
 275    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 276      {
 277        list_args_or_locals (locals, print_value, frame,
 278                             skip_unavailable);
 279      }
 280 }
 281
 282 /* Print a list of the arguments for the current frame.  With argument
 283    of 0, print only the names, with argument of 1 print also the
 284    values.  */
 285
 286 void
 287 mi_cmd_stack_list_args (const char *command, char **argv, int argc)
 288 {
 289   int frame_low;
 290   int frame_high;
 291   int i;
 292   struct frame_info *fi;
 293   struct cleanup *cleanup_stack_args;
 294   enum print_values print_values;
 295   struct ui_out *uiout = current_uiout;
 296   int raw_arg = 0;
 297   int oind = 0;
 298   int skip_unavailable = 0;
 299   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 300   enum opt
 301   {
 302     NO_FRAME_FILTERS,
 303     SKIP_UNAVAILABLE,
 304   };
 305   static const struct mi_opt opts[] =
 306     {
 307       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 308       {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 309       { 0, 0, 0 }
 310     };
 311
 312   while (1)
 313     {
 314       char *oarg;
 315       int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv,
 316                                          opts, &oind, &oarg);
 317
 318       if (opt < 0)
 319         break;
 320       switch ((enum opt) opt)
 321         {
 322         case NO_FRAME_FILTERS:
 323           raw_arg = oind;
 324           break;
 325         case SKIP_UNAVAILABLE:
 326           skip_unavailable = 1;
 327           break;
 328         }
 329     }
 330
 331   if (argc - oind != 1 && argc - oind != 3)
 332     error (_("-stack-list-arguments: Usage: "   \
 333              "[--no-frame-filters] [--skip-unavailable] "
 334              "PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
 335
 336   if (argc - oind == 3)
 337     {
 338       frame_low = atoi (argv[1 + oind]);
 339       frame_high = atoi (argv[2 + oind]);
 340     }
 341   else
 342     {
 343       /* Called with no arguments, it means we want args for the whole
 344          backtrace.  */
 345       frame_low = -1;
 346       frame_high = -1;
 347     }
 348
 349   print_values = mi_parse_print_values (argv[oind]);
 350
 351   /* Let's position fi on the frame at which to start the
 352      display. Could be the innermost frame if the whole stack needs
 353      displaying, or if frame_low is 0.  */
 354   for (i = 0, fi = get_current_frame ();
 355        fi && i < frame_low;
 356        i++, fi = get_prev_frame (fi));
 357
 358   if (fi == NULL)
 359     error (_("-stack-list-arguments: Not enough frames in stack."));
 360
 361   cleanup_stack_args
 362     = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
 363
 364   if (! raw_arg && frame_filters)
 365     {
 366       int flags = PRINT_LEVEL | PRINT_ARGS;
 367       int py_frame_low = frame_low;
 368
 369       /* We cannot pass -1 to frame_low, as that would signify a
 370       relative backtrace from the tail of the stack.  So, in the case
 371       of frame_low == -1, assign and increment it.  */
 372       if (py_frame_low == -1)
 373         py_frame_low++;
 374
 375       result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags,
 376                                                print_values, current_uiout,
 377                                                py_frame_low, frame_high);
 378     }
 379
 380      /* Run the inbuilt backtrace if there are no filters registered, or
 381       if "--no-frame-filters" has been specified from the command.  */
 382    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 383      {
 384       /* Now let's print the frames up to frame_high, or until there are
 385          frames in the stack.  */
 386       for (;
 387            fi && (i <= frame_high || frame_high == -1);
 388            i++, fi = get_prev_frame (fi))
 389         {
 390           QUIT;
 391           ui_out_emit_tuple tuple_emitter (uiout, "frame");
 392           uiout->field_int ("level", i);
 393           list_args_or_locals (arguments, print_values, fi, skip_unavailable);
 394         }
 395     }
 396   do_cleanups (cleanup_stack_args);
 397 }
 398
 399 /* Print a list of the local variables (including arguments) for the
 400    current frame.  ARGC must be 1 and ARGV[0] specify if only the names,
 401    or both names and values of the variables must be printed.  See
 402    parse_print_value for possible values.  */
 403
 404 void
 405 mi_cmd_stack_list_variables (const char *command, char **argv, int argc)
 406 {
 407   struct frame_info *frame;
 408   int raw_arg = 0;
 409   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 410   enum print_values print_value;
 411   int oind = 0;
 412   int skip_unavailable = 0;
 413
 414   if (argc > 1)
 415     {
 416       enum opt
 417       {
 418         NO_FRAME_FILTERS,
 419         SKIP_UNAVAILABLE,
 420       };
 421       static const struct mi_opt opts[] =
 422         {
 423           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 424           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 425           { 0, 0, 0 }
 426         };
 427
 428       while (1)
 429         {
 430           char *oarg;
 431           /* Don't parse 'print-values' as an option.  */
 432           int opt = mi_getopt ("-stack-list-variables", argc - 1,
 433                                argv, opts, &oind, &oarg);
 434           if (opt < 0)
 435             break;
 436           switch ((enum opt) opt)
 437             {
 438             case NO_FRAME_FILTERS:
 439               raw_arg = oind;
 440               break;
 441             case SKIP_UNAVAILABLE:
 442               skip_unavailable = 1;
 443               break;
 444             }
 445         }
 446     }
 447
 448   /* After the last option is parsed, there should be only
 449      'print-values'.  */
 450   if (argc - oind != 1)
 451     error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
 452              "[--skip-unavailable] PRINT_VALUES"));
 453
 454    frame = get_selected_frame (NULL);
 455    print_value = mi_parse_print_values (argv[oind]);
 456
 457    if (! raw_arg && frame_filters)
 458      {
 459        int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
 460
 461        result = mi_apply_ext_lang_frame_filter (frame, flags,
 462                                                 print_value,
 463                                                 current_uiout, 0, 0);
 464      }
 465
 466    /* Run the inbuilt backtrace if there are no filters registered, or
 467       if "--no-frame-filters" has been specified from the command.  */
 468    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 469      {
 470        list_args_or_locals (all, print_value, frame,
 471                             skip_unavailable);
 472      }
 473 }
 474
 475 /* Print single local or argument.  ARG must be already read in.  For
 476    WHAT and VALUES see list_args_or_locals.
 477
 478    Errors are printed as if they would be the parameter value.  Use
 479    zeroed ARG iff it should not be printed according to VALUES.  If
 480    SKIP_UNAVAILABLE is true, only print ARG if it is available.  */
 481
 482 static void
 483 list_arg_or_local (const struct frame_arg *arg, enum what_to_list what,
 484                    enum print_values values, int skip_unavailable)
 485 {
 486   struct cleanup *old_chain;
 487   struct ui_out *uiout = current_uiout;
 488
 489   gdb_assert (!arg->val || !arg->error);
 490   gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL
 491                && arg->error == NULL)
 492               || values == PRINT_SIMPLE_VALUES
 493               || (values == PRINT_ALL_VALUES
 494                   && (arg->val != NULL || arg->error != NULL)));
 495   gdb_assert (arg->entry_kind == print_entry_values_no
 496               || (arg->entry_kind == print_entry_values_only
 497                   && (arg->val || arg->error)));
 498
 499   if (skip_unavailable && arg->val != NULL
 500       && (value_entirely_unavailable (arg->val)
 501           /* A scalar object that does not have all bits available is
 502              also considered unavailable, because all bits contribute
 503              to its representation.  */
 504           || (val_print_scalar_type_p (value_type (arg->val))
 505               && !value_bytes_available (arg->val,
 506                                          value_embedded_offset (arg->val),
 507                                          TYPE_LENGTH (value_type (arg->val))))))
 508     return;
 509
 510   old_chain = make_cleanup (null_cleanup, NULL);
 511
 512   if (values != PRINT_NO_VALUES || what == all)
 513     make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 514
 515   string_file stb;
 516
 517   stb.puts (SYMBOL_PRINT_NAME (arg->sym));
 518   if (arg->entry_kind == print_entry_values_only)
 519     stb.puts ("@entry");
 520   uiout->field_stream ("name", stb);
 521
 522   if (what == all && SYMBOL_IS_ARGUMENT (arg->sym))
 523     uiout->field_int ("arg", 1);
 524
 525   if (values == PRINT_SIMPLE_VALUES)
 526     {
 527       check_typedef (arg->sym->type);
 528       type_print (arg->sym->type, "", &stb, -1);
 529       uiout->field_stream ("type", stb);
 530     }
 531
 532   if (arg->val || arg->error)
 533     {
 534       const char *error_message = NULL;
 535
 536       if (arg->error)
 537         error_message = arg->error;
 538       else
 539         {
 540           TRY
 541             {
 542               struct value_print_options opts;
 543
 544               get_no_prettyformat_print_options (&opts);
 545               opts.deref_ref = 1;
 546               common_val_print (arg->val, &stb, 0, &opts,
 547                                 language_def (SYMBOL_LANGUAGE (arg->sym)));
 548             }
 549           CATCH (except, RETURN_MASK_ERROR)
 550             {
 551               error_message = except.message;
 552             }
 553           END_CATCH
 554         }
 555       if (error_message != NULL)
 556         stb.printf (_("<error reading variable: %s>"), error_message);
 557       uiout->field_stream ("value", stb);
 558     }
 559
 560   do_cleanups (old_chain);
 561 }
 562
 563 /* Print a list of the objects for the frame FI in a certain form,
 564    which is determined by VALUES.  The objects can be locals,
 565    arguments or both, which is determined by WHAT.  If SKIP_UNAVAILABLE
 566    is true, only print the arguments or local variables whose values
 567    are available.  */
 568
 569 static void
 570 list_args_or_locals (enum what_to_list what, enum print_values values,
 571                      struct frame_info *fi, int skip_unavailable)
 572 {
 573   const struct block *block;
 574   struct symbol *sym;
 575   struct block_iterator iter;
 576   struct cleanup *cleanup_list;
 577   struct type *type;
 578   const char *name_of_result;
 579   struct ui_out *uiout = current_uiout;
 580
 581   block = get_frame_block (fi, 0);
 582
 583   switch (what)
 584     {
 585     case locals:
 586       name_of_result = "locals";
 587       break;
 588     case arguments:
 589       name_of_result = "args";
 590       break;
 591     case all:
 592       name_of_result = "variables";
 593       break;
 594     default:
 595       internal_error (__FILE__, __LINE__,
 596                       "unexpected what_to_list: %d", (int) what);
 597     }
 598
 599   cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
 600
 601   while (block != 0)
 602     {
 603       ALL_BLOCK_SYMBOLS (block, iter, sym)
 604         {
 605           int print_me = 0;
 606
 607           switch (SYMBOL_CLASS (sym))
 608             {
 609             default:
 610             case LOC_UNDEF:     /* catches errors        */
 611             case LOC_CONST:     /* constant              */
 612             case LOC_TYPEDEF:   /* local typedef         */
 613             case LOC_LABEL:     /* local label           */
 614             case LOC_BLOCK:     /* local function        */
 615             case LOC_CONST_BYTES:       /* loc. byte seq.        */
 616             case LOC_UNRESOLVED:        /* unresolved static     */
 617             case LOC_OPTIMIZED_OUT:     /* optimized out         */
 618               print_me = 0;
 619               break;
 620
 621             case LOC_ARG:       /* argument              */
 622             case LOC_REF_ARG:   /* reference arg         */
 623             case LOC_REGPARM_ADDR:      /* indirect register arg */
 624             case LOC_LOCAL:     /* stack local           */
 625             case LOC_STATIC:    /* static                */
 626             case LOC_REGISTER:  /* register              */
 627             case LOC_COMPUTED:  /* computed location     */
 628               if (what == all)
 629                 print_me = 1;
 630               else if (what == locals)
 631                 print_me = !SYMBOL_IS_ARGUMENT (sym);
 632               else
 633                 print_me = SYMBOL_IS_ARGUMENT (sym);
 634               break;
 635             }
 636           if (print_me)
 637             {
 638               struct symbol *sym2;
 639               struct frame_arg arg, entryarg;
 640
 641               if (SYMBOL_IS_ARGUMENT (sym))
 642                 sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
 643                                       block, VAR_DOMAIN,
 644                                       NULL).symbol;
 645               else
 646                 sym2 = sym;
 647               gdb_assert (sym2 != NULL);
 648
 649               memset (&arg, 0, sizeof (arg));
 650               arg.sym = sym2;
 651               arg.entry_kind = print_entry_values_no;
 652               memset (&entryarg, 0, sizeof (entryarg));
 653               entryarg.sym = sym2;
 654               entryarg.entry_kind = print_entry_values_no;
 655
 656               switch (values)
 657                 {
 658                 case PRINT_SIMPLE_VALUES:
 659                   type = check_typedef (sym2->type);
 660                   if (TYPE_CODE (type) != TYPE_CODE_ARRAY
 661                       && TYPE_CODE (type) != TYPE_CODE_STRUCT
 662                       && TYPE_CODE (type) != TYPE_CODE_UNION)
 663                     {
 664                 case PRINT_ALL_VALUES:
 665                   if (SYMBOL_IS_ARGUMENT (sym))
 666                     read_frame_arg (sym2, fi, &arg, &entryarg);
 667                   else
 668                     read_frame_local (sym2, fi, &arg);
 669                     }
 670                   break;
 671                 }
 672
 673               if (arg.entry_kind != print_entry_values_only)
 674                 list_arg_or_local (&arg, what, values, skip_unavailable);
 675               if (entryarg.entry_kind != print_entry_values_no)
 676                 list_arg_or_local (&entryarg, what, values, skip_unavailable);
 677               xfree (arg.error);
 678               xfree (entryarg.error);
 679             }
 680         }
 681
 682       if (BLOCK_FUNCTION (block))
 683         break;
 684       else
 685         block = BLOCK_SUPERBLOCK (block);
 686     }
 687   do_cleanups (cleanup_list);
 688 }
 689
 690 void
 691 mi_cmd_stack_select_frame (const char *command, char **argv, int argc)
 692 {
 693   if (argc == 0 || argc > 1)
 694     error (_("-stack-select-frame: Usage: FRAME_SPEC"));
 695
 696   select_frame_command (argv[0], 1 /* not used */ );
 697 }
 698
 699 void
 700 mi_cmd_stack_info_frame (const char *command, char **argv, int argc)
 701 {
 702   if (argc > 0)
 703     error (_("-stack-info-frame: No arguments allowed"));
 704
 705   print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1);
 706 }