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 #include "common/gdb_optional.h"
  38
  39 enum what_to_list { locals, arguments, all };
  40
  41 static void list_args_or_locals (enum what_to_list what,
  42                                  enum print_values values,
  43                                  struct frame_info *fi,
  44                                  int skip_unavailable);
  45
  46 /* True if we want to allow Python-based frame filters.  */
  47 static int frame_filters = 0;
  48
  49 void
  50 mi_cmd_enable_frame_filters (const char *command, char **argv, int argc)
  51 {
  52   if (argc != 0)
  53     error (_("-enable-frame-filters: no arguments allowed"));
  54   frame_filters = 1;
  55 }
  56
  57 /* Like apply_ext_lang_frame_filter, but take a print_values */
  58
  59 static enum ext_lang_bt_status
  60 mi_apply_ext_lang_frame_filter (struct frame_info *frame, int flags,
  61                                 enum print_values print_values,
  62                                 struct ui_out *out,
  63                                 int frame_low, int frame_high)
  64 {
  65   /* ext_lang_frame_args's MI options are compatible with MI print
  66      values.  */
  67   return apply_ext_lang_frame_filter (frame, flags,
  68                                       (enum ext_lang_frame_args) print_values,
  69                                       out,
  70                                       frame_low, frame_high);
  71 }
  72
  73 /* Print a list of the stack frames.  Args can be none, in which case
  74    we want to print the whole backtrace, or a pair of numbers
  75    specifying the frame numbers at which to start and stop the
  76    display.  If the two numbers are equal, a single frame will be
  77    displayed.  */
  78
  79 void
  80 mi_cmd_stack_list_frames (const char *command, char **argv, int argc)
  81 {
  82   int frame_low;
  83   int frame_high;
  84   int i;
  85   struct cleanup *cleanup_stack;
  86   struct frame_info *fi;
  87   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
  88   int raw_arg = 0;
  89   int oind = 0;
  90   enum opt
  91     {
  92       NO_FRAME_FILTERS
  93     };
  94   static const struct mi_opt opts[] =
  95     {
  96       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
  97       { 0, 0, 0 }
  98     };
  99
 100   /* Parse arguments.  In this instance we are just looking for
 101      --no-frame-filters.  */
 102   while (1)
 103     {
 104       char *oarg;
 105       int opt = mi_getopt ("-stack-list-frames", argc, argv,
 106                            opts, &oind, &oarg);
 107       if (opt < 0)
 108         break;
 109       switch ((enum opt) opt)
 110         {
 111         case NO_FRAME_FILTERS:
 112           raw_arg = oind;
 113           break;
 114         }
 115     }
 116
 117   /* After the last option is parsed, there should either be low -
 118      high range, or no further arguments.  */
 119   if ((argc - oind != 0) && (argc - oind != 2))
 120     error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]"));
 121
 122   /* If there is a range, set it.  */
 123   if (argc - oind == 2)
 124     {
 125       frame_low = atoi (argv[0 + oind]);
 126       frame_high = atoi (argv[1 + oind]);
 127     }
 128   else
 129     {
 130       /* Called with no arguments, it means we want the whole
 131          backtrace.  */
 132       frame_low = -1;
 133       frame_high = -1;
 134     }
 135
 136   /* Let's position fi on the frame at which to start the
 137      display. Could be the innermost frame if the whole stack needs
 138      displaying, or if frame_low is 0.  */
 139   for (i = 0, fi = get_current_frame ();
 140        fi && i < frame_low;
 141        i++, fi = get_prev_frame (fi));
 142
 143   if (fi == NULL)
 144     error (_("-stack-list-frames: Not enough frames in stack."));
 145
 146   cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
 147
 148   if (! raw_arg && frame_filters)
 149     {
 150       int flags = PRINT_LEVEL | PRINT_FRAME_INFO;
 151       int py_frame_low = frame_low;
 152
 153       /* We cannot pass -1 to frame_low, as that would signify a
 154       relative backtrace from the tail of the stack.  So, in the case
 155       of frame_low == -1, assign and increment it.  */
 156       if (py_frame_low == -1)
 157         py_frame_low++;
 158
 159       result = apply_ext_lang_frame_filter (get_current_frame (), flags,
 160                                             NO_VALUES,  current_uiout,
 161                                             py_frame_low, frame_high);
 162     }
 163
 164   /* Run the inbuilt backtrace if there are no filters registered, or
 165      if "--no-frame-filters" has been specified from the command.  */
 166   if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 167     {
 168       /* Now let's print the frames up to frame_high, or until there are
 169          frames in the stack.  */
 170       for (;
 171            fi && (i <= frame_high || frame_high == -1);
 172            i++, fi = get_prev_frame (fi))
 173         {
 174           QUIT;
 175           /* Print the location and the address always, even for level 0.
 176              If args is 0, don't print the arguments.  */
 177           print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0);
 178         }
 179     }
 180
 181   do_cleanups (cleanup_stack);
 182 }
 183
 184 void
 185 mi_cmd_stack_info_depth (const char *command, char **argv, int argc)
 186 {
 187   int frame_high;
 188   int i;
 189   struct frame_info *fi;
 190
 191   if (argc > 1)
 192     error (_("-stack-info-depth: Usage: [MAX_DEPTH]"));
 193
 194   if (argc == 1)
 195     frame_high = atoi (argv[0]);
 196   else
 197     /* Called with no arguments, it means we want the real depth of
 198        the stack.  */
 199     frame_high = -1;
 200
 201   for (i = 0, fi = get_current_frame ();
 202        fi && (i < frame_high || frame_high == -1);
 203        i++, fi = get_prev_frame (fi))
 204     QUIT;
 205
 206   current_uiout->field_int ("depth", i);
 207 }
 208
 209 /* Print a list of the locals for the current frame.  With argument of
 210    0, print only the names, with argument of 1 print also the
 211    values.  */
 212
 213 void
 214 mi_cmd_stack_list_locals (const char *command, char **argv, int argc)
 215 {
 216   struct frame_info *frame;
 217   int raw_arg = 0;
 218   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 219   enum print_values print_value;
 220   int oind = 0;
 221   int skip_unavailable = 0;
 222
 223   if (argc > 1)
 224     {
 225       enum opt
 226       {
 227         NO_FRAME_FILTERS,
 228         SKIP_UNAVAILABLE,
 229       };
 230       static const struct mi_opt opts[] =
 231         {
 232           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 233           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 234           { 0, 0, 0 }
 235         };
 236
 237       while (1)
 238         {
 239           char *oarg;
 240           /* Don't parse 'print-values' as an option.  */
 241           int opt = mi_getopt ("-stack-list-locals", argc - 1, argv,
 242                                opts, &oind, &oarg);
 243
 244           if (opt < 0)
 245             break;
 246           switch ((enum opt) opt)
 247             {
 248             case NO_FRAME_FILTERS:
 249               raw_arg = oind;
 250             case SKIP_UNAVAILABLE:
 251               skip_unavailable = 1;
 252               break;
 253             }
 254         }
 255     }
 256
 257   /* After the last option is parsed, there should be only
 258      'print-values'.  */
 259   if (argc - oind != 1)
 260     error (_("-stack-list-locals: Usage: [--no-frame-filters] "
 261              "[--skip-unavailable] PRINT_VALUES"));
 262
 263   frame = get_selected_frame (NULL);
 264   print_value = mi_parse_print_values (argv[oind]);
 265
 266    if (! raw_arg && frame_filters)
 267      {
 268        int flags = PRINT_LEVEL | PRINT_LOCALS;
 269
 270        result = mi_apply_ext_lang_frame_filter (frame, flags, print_value,
 271                                                 current_uiout, 0, 0);
 272      }
 273
 274    /* Run the inbuilt backtrace if there are no filters registered, or
 275       if "--no-frame-filters" has been specified from the command.  */
 276    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 277      {
 278        list_args_or_locals (locals, print_value, frame,
 279                             skip_unavailable);
 280      }
 281 }
 282
 283 /* Print a list of the arguments for the current frame.  With argument
 284    of 0, print only the names, with argument of 1 print also the
 285    values.  */
 286
 287 void
 288 mi_cmd_stack_list_args (const char *command, char **argv, int argc)
 289 {
 290   int frame_low;
 291   int frame_high;
 292   int i;
 293   struct frame_info *fi;
 294   struct cleanup *cleanup_stack_args;
 295   enum print_values print_values;
 296   struct ui_out *uiout = current_uiout;
 297   int raw_arg = 0;
 298   int oind = 0;
 299   int skip_unavailable = 0;
 300   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 301   enum opt
 302   {
 303     NO_FRAME_FILTERS,
 304     SKIP_UNAVAILABLE,
 305   };
 306   static const struct mi_opt opts[] =
 307     {
 308       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 309       {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 310       { 0, 0, 0 }
 311     };
 312
 313   while (1)
 314     {
 315       char *oarg;
 316       int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv,
 317                                          opts, &oind, &oarg);
 318
 319       if (opt < 0)
 320         break;
 321       switch ((enum opt) opt)
 322         {
 323         case NO_FRAME_FILTERS:
 324           raw_arg = oind;
 325           break;
 326         case SKIP_UNAVAILABLE:
 327           skip_unavailable = 1;
 328           break;
 329         }
 330     }
 331
 332   if (argc - oind != 1 && argc - oind != 3)
 333     error (_("-stack-list-arguments: Usage: "   \
 334              "[--no-frame-filters] [--skip-unavailable] "
 335              "PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
 336
 337   if (argc - oind == 3)
 338     {
 339       frame_low = atoi (argv[1 + oind]);
 340       frame_high = atoi (argv[2 + oind]);
 341     }
 342   else
 343     {
 344       /* Called with no arguments, it means we want args for the whole
 345          backtrace.  */
 346       frame_low = -1;
 347       frame_high = -1;
 348     }
 349
 350   print_values = mi_parse_print_values (argv[oind]);
 351
 352   /* Let's position fi on the frame at which to start the
 353      display. Could be the innermost frame if the whole stack needs
 354      displaying, or if frame_low is 0.  */
 355   for (i = 0, fi = get_current_frame ();
 356        fi && i < frame_low;
 357        i++, fi = get_prev_frame (fi));
 358
 359   if (fi == NULL)
 360     error (_("-stack-list-arguments: Not enough frames in stack."));
 361
 362   cleanup_stack_args
 363     = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
 364
 365   if (! raw_arg && frame_filters)
 366     {
 367       int flags = PRINT_LEVEL | PRINT_ARGS;
 368       int py_frame_low = frame_low;
 369
 370       /* We cannot pass -1 to frame_low, as that would signify a
 371       relative backtrace from the tail of the stack.  So, in the case
 372       of frame_low == -1, assign and increment it.  */
 373       if (py_frame_low == -1)
 374         py_frame_low++;
 375
 376       result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags,
 377                                                print_values, current_uiout,
 378                                                py_frame_low, frame_high);
 379     }
 380
 381      /* Run the inbuilt backtrace if there are no filters registered, or
 382       if "--no-frame-filters" has been specified from the command.  */
 383    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 384      {
 385       /* Now let's print the frames up to frame_high, or until there are
 386          frames in the stack.  */
 387       for (;
 388            fi && (i <= frame_high || frame_high == -1);
 389            i++, fi = get_prev_frame (fi))
 390         {
 391           QUIT;
 392           ui_out_emit_tuple tuple_emitter (uiout, "frame");
 393           uiout->field_int ("level", i);
 394           list_args_or_locals (arguments, print_values, fi, skip_unavailable);
 395         }
 396     }
 397   do_cleanups (cleanup_stack_args);
 398 }
 399
 400 /* Print a list of the local variables (including arguments) for the
 401    current frame.  ARGC must be 1 and ARGV[0] specify if only the names,
 402    or both names and values of the variables must be printed.  See
 403    parse_print_value for possible values.  */
 404
 405 void
 406 mi_cmd_stack_list_variables (const char *command, char **argv, int argc)
 407 {
 408   struct frame_info *frame;
 409   int raw_arg = 0;
 410   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 411   enum print_values print_value;
 412   int oind = 0;
 413   int skip_unavailable = 0;
 414
 415   if (argc > 1)
 416     {
 417       enum opt
 418       {
 419         NO_FRAME_FILTERS,
 420         SKIP_UNAVAILABLE,
 421       };
 422       static const struct mi_opt opts[] =
 423         {
 424           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 425           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 426           { 0, 0, 0 }
 427         };
 428
 429       while (1)
 430         {
 431           char *oarg;
 432           /* Don't parse 'print-values' as an option.  */
 433           int opt = mi_getopt ("-stack-list-variables", argc - 1,
 434                                argv, opts, &oind, &oarg);
 435           if (opt < 0)
 436             break;
 437           switch ((enum opt) opt)
 438             {
 439             case NO_FRAME_FILTERS:
 440               raw_arg = oind;
 441               break;
 442             case SKIP_UNAVAILABLE:
 443               skip_unavailable = 1;
 444               break;
 445             }
 446         }
 447     }
 448
 449   /* After the last option is parsed, there should be only
 450      'print-values'.  */
 451   if (argc - oind != 1)
 452     error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
 453              "[--skip-unavailable] PRINT_VALUES"));
 454
 455    frame = get_selected_frame (NULL);
 456    print_value = mi_parse_print_values (argv[oind]);
 457
 458    if (! raw_arg && frame_filters)
 459      {
 460        int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
 461
 462        result = mi_apply_ext_lang_frame_filter (frame, flags,
 463                                                 print_value,
 464                                                 current_uiout, 0, 0);
 465      }
 466
 467    /* Run the inbuilt backtrace if there are no filters registered, or
 468       if "--no-frame-filters" has been specified from the command.  */
 469    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 470      {
 471        list_args_or_locals (all, print_value, frame,
 472                             skip_unavailable);
 473      }
 474 }
 475
 476 /* Print single local or argument.  ARG must be already read in.  For
 477    WHAT and VALUES see list_args_or_locals.
 478
 479    Errors are printed as if they would be the parameter value.  Use
 480    zeroed ARG iff it should not be printed according to VALUES.  If
 481    SKIP_UNAVAILABLE is true, only print ARG if it is available.  */
 482
 483 static void
 484 list_arg_or_local (const struct frame_arg *arg, enum what_to_list what,
 485                    enum print_values values, int skip_unavailable)
 486 {
 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   gdb::optional<ui_out_emit_tuple> tuple_emitter;
 511   if (values != PRINT_NO_VALUES || what == all)
 512     tuple_emitter.emplace (uiout, nullptr);
 513
 514   string_file stb;
 515
 516   stb.puts (SYMBOL_PRINT_NAME (arg->sym));
 517   if (arg->entry_kind == print_entry_values_only)
 518     stb.puts ("@entry");
 519   uiout->field_stream ("name", stb);
 520
 521   if (what == all && SYMBOL_IS_ARGUMENT (arg->sym))
 522     uiout->field_int ("arg", 1);
 523
 524   if (values == PRINT_SIMPLE_VALUES)
 525     {
 526       check_typedef (arg->sym->type);
 527       type_print (arg->sym->type, "", &stb, -1);
 528       uiout->field_stream ("type", stb);
 529     }
 530
 531   if (arg->val || arg->error)
 532     {
 533       const char *error_message = NULL;
 534
 535       if (arg->error)
 536         error_message = arg->error;
 537       else
 538         {
 539           TRY
 540             {
 541               struct value_print_options opts;
 542
 543               get_no_prettyformat_print_options (&opts);
 544               opts.deref_ref = 1;
 545               common_val_print (arg->val, &stb, 0, &opts,
 546                                 language_def (SYMBOL_LANGUAGE (arg->sym)));
 547             }
 548           CATCH (except, RETURN_MASK_ERROR)
 549             {
 550               error_message = except.message;
 551             }
 552           END_CATCH
 553         }
 554       if (error_message != NULL)
 555         stb.printf (_("<error reading variable: %s>"), error_message);
 556       uiout->field_stream ("value", stb);
 557     }
 558 }
 559
 560 /* Print a list of the objects for the frame FI in a certain form,
 561    which is determined by VALUES.  The objects can be locals,
 562    arguments or both, which is determined by WHAT.  If SKIP_UNAVAILABLE
 563    is true, only print the arguments or local variables whose values
 564    are available.  */
 565
 566 static void
 567 list_args_or_locals (enum what_to_list what, enum print_values values,
 568                      struct frame_info *fi, int skip_unavailable)
 569 {
 570   const struct block *block;
 571   struct symbol *sym;
 572   struct block_iterator iter;
 573   struct cleanup *cleanup_list;
 574   struct type *type;
 575   const char *name_of_result;
 576   struct ui_out *uiout = current_uiout;
 577
 578   block = get_frame_block (fi, 0);
 579
 580   switch (what)
 581     {
 582     case locals:
 583       name_of_result = "locals";
 584       break;
 585     case arguments:
 586       name_of_result = "args";
 587       break;
 588     case all:
 589       name_of_result = "variables";
 590       break;
 591     default:
 592       internal_error (__FILE__, __LINE__,
 593                       "unexpected what_to_list: %d", (int) what);
 594     }
 595
 596   cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
 597
 598   while (block != 0)
 599     {
 600       ALL_BLOCK_SYMBOLS (block, iter, sym)
 601         {
 602           int print_me = 0;
 603
 604           switch (SYMBOL_CLASS (sym))
 605             {
 606             default:
 607             case LOC_UNDEF:     /* catches errors        */
 608             case LOC_CONST:     /* constant              */
 609             case LOC_TYPEDEF:   /* local typedef         */
 610             case LOC_LABEL:     /* local label           */
 611             case LOC_BLOCK:     /* local function        */
 612             case LOC_CONST_BYTES:       /* loc. byte seq.        */
 613             case LOC_UNRESOLVED:        /* unresolved static     */
 614             case LOC_OPTIMIZED_OUT:     /* optimized out         */
 615               print_me = 0;
 616               break;
 617
 618             case LOC_ARG:       /* argument              */
 619             case LOC_REF_ARG:   /* reference arg         */
 620             case LOC_REGPARM_ADDR:      /* indirect register arg */
 621             case LOC_LOCAL:     /* stack local           */
 622             case LOC_STATIC:    /* static                */
 623             case LOC_REGISTER:  /* register              */
 624             case LOC_COMPUTED:  /* computed location     */
 625               if (what == all)
 626                 print_me = 1;
 627               else if (what == locals)
 628                 print_me = !SYMBOL_IS_ARGUMENT (sym);
 629               else
 630                 print_me = SYMBOL_IS_ARGUMENT (sym);
 631               break;
 632             }
 633           if (print_me)
 634             {
 635               struct symbol *sym2;
 636               struct frame_arg arg, entryarg;
 637
 638               if (SYMBOL_IS_ARGUMENT (sym))
 639                 sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
 640                                       block, VAR_DOMAIN,
 641                                       NULL).symbol;
 642               else
 643                 sym2 = sym;
 644               gdb_assert (sym2 != NULL);
 645
 646               memset (&arg, 0, sizeof (arg));
 647               arg.sym = sym2;
 648               arg.entry_kind = print_entry_values_no;
 649               memset (&entryarg, 0, sizeof (entryarg));
 650               entryarg.sym = sym2;
 651               entryarg.entry_kind = print_entry_values_no;
 652
 653               switch (values)
 654                 {
 655                 case PRINT_SIMPLE_VALUES:
 656                   type = check_typedef (sym2->type);
 657                   if (TYPE_CODE (type) != TYPE_CODE_ARRAY
 658                       && TYPE_CODE (type) != TYPE_CODE_STRUCT
 659                       && TYPE_CODE (type) != TYPE_CODE_UNION)
 660                     {
 661                 case PRINT_ALL_VALUES:
 662                   if (SYMBOL_IS_ARGUMENT (sym))
 663                     read_frame_arg (sym2, fi, &arg, &entryarg);
 664                   else
 665                     read_frame_local (sym2, fi, &arg);
 666                     }
 667                   break;
 668                 }
 669
 670               if (arg.entry_kind != print_entry_values_only)
 671                 list_arg_or_local (&arg, what, values, skip_unavailable);
 672               if (entryarg.entry_kind != print_entry_values_no)
 673                 list_arg_or_local (&entryarg, what, values, skip_unavailable);
 674               xfree (arg.error);
 675               xfree (entryarg.error);
 676             }
 677         }
 678
 679       if (BLOCK_FUNCTION (block))
 680         break;
 681       else
 682         block = BLOCK_SUPERBLOCK (block);
 683     }
 684   do_cleanups (cleanup_list);
 685 }
 686
 687 void
 688 mi_cmd_stack_select_frame (const char *command, char **argv, int argc)
 689 {
 690   if (argc == 0 || argc > 1)
 691     error (_("-stack-select-frame: Usage: FRAME_SPEC"));
 692
 693   select_frame_command (argv[0], 1 /* not used */ );
 694 }
 695
 696 void
 697 mi_cmd_stack_info_frame (const char *command, char **argv, int argc)
 698 {
 699   if (argc > 0)
 700     error (_("-stack-info-frame: No arguments allowed"));
 701
 702   print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1);
 703 }