gdb/mi/mi-cmd-stack.c

   1 /* MI Command Set - stack commands.
   2    Copyright (C) 2000-2016 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 /* 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 (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 (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   ui_out_field_int (current_uiout, "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 (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   int i;
 222
 223   if (argc > 1)
 224     {
 225       int i;
 226       enum opt
 227       {
 228         NO_FRAME_FILTERS,
 229         SKIP_UNAVAILABLE,
 230       };
 231       static const struct mi_opt opts[] =
 232         {
 233           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 234           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 235           { 0, 0, 0 }
 236         };
 237
 238       while (1)
 239         {
 240           char *oarg;
 241           /* Don't parse 'print-values' as an option.  */
 242           int opt = mi_getopt ("-stack-list-locals", argc - 1, argv,
 243                                opts, &oind, &oarg);
 244
 245           if (opt < 0)
 246             break;
 247           switch ((enum opt) opt)
 248             {
 249             case NO_FRAME_FILTERS:
 250               raw_arg = oind;
 251             case SKIP_UNAVAILABLE:
 252               skip_unavailable = 1;
 253               break;
 254             }
 255         }
 256     }
 257
 258   /* After the last option is parsed, there should be only
 259      'print-values'.  */
 260   if (argc - oind != 1)
 261     error (_("-stack-list-locals: Usage: [--no-frame-filters] "
 262              "[--skip-unavailable] PRINT_VALUES"));
 263
 264   frame = get_selected_frame (NULL);
 265   print_value = mi_parse_print_values (argv[oind]);
 266
 267    if (! raw_arg && frame_filters)
 268      {
 269        int flags = PRINT_LEVEL | PRINT_LOCALS;
 270
 271        result = mi_apply_ext_lang_frame_filter (frame, flags, print_value,
 272                                                 current_uiout, 0, 0);
 273      }
 274
 275    /* Run the inbuilt backtrace if there are no filters registered, or
 276       if "--no-frame-filters" has been specified from the command.  */
 277    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 278      {
 279        list_args_or_locals (locals, print_value, frame,
 280                             skip_unavailable);
 281      }
 282 }
 283
 284 /* Print a list of the arguments for the current frame.  With argument
 285    of 0, print only the names, with argument of 1 print also the
 286    values.  */
 287
 288 void
 289 mi_cmd_stack_list_args (char *command, char **argv, int argc)
 290 {
 291   int frame_low;
 292   int frame_high;
 293   int i;
 294   struct frame_info *fi;
 295   struct cleanup *cleanup_stack_args;
 296   enum print_values print_values;
 297   struct ui_out *uiout = current_uiout;
 298   int raw_arg = 0;
 299   int oind = 0;
 300   int skip_unavailable = 0;
 301   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 302   enum opt
 303   {
 304     NO_FRAME_FILTERS,
 305     SKIP_UNAVAILABLE,
 306   };
 307   static const struct mi_opt opts[] =
 308     {
 309       {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 310       {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 311       { 0, 0, 0 }
 312     };
 313
 314   while (1)
 315     {
 316       char *oarg;
 317       int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv,
 318                                          opts, &oind, &oarg);
 319
 320       if (opt < 0)
 321         break;
 322       switch ((enum opt) opt)
 323         {
 324         case NO_FRAME_FILTERS:
 325           raw_arg = oind;
 326           break;
 327         case SKIP_UNAVAILABLE:
 328           skip_unavailable = 1;
 329           break;
 330         }
 331     }
 332
 333   if (argc - oind != 1 && argc - oind != 3)
 334     error (_("-stack-list-arguments: Usage: "   \
 335              "[--no-frame-filters] [--skip-unavailable] "
 336              "PRINT_VALUES [FRAME_LOW FRAME_HIGH]"));
 337
 338   if (argc - oind == 3)
 339     {
 340       frame_low = atoi (argv[1 + oind]);
 341       frame_high = atoi (argv[2 + oind]);
 342     }
 343   else
 344     {
 345       /* Called with no arguments, it means we want args for the whole
 346          backtrace.  */
 347       frame_low = -1;
 348       frame_high = -1;
 349     }
 350
 351   print_values = mi_parse_print_values (argv[oind]);
 352
 353   /* Let's position fi on the frame at which to start the
 354      display. Could be the innermost frame if the whole stack needs
 355      displaying, or if frame_low is 0.  */
 356   for (i = 0, fi = get_current_frame ();
 357        fi && i < frame_low;
 358        i++, fi = get_prev_frame (fi));
 359
 360   if (fi == NULL)
 361     error (_("-stack-list-arguments: Not enough frames in stack."));
 362
 363   cleanup_stack_args
 364     = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
 365
 366   if (! raw_arg && frame_filters)
 367     {
 368       int flags = PRINT_LEVEL | PRINT_ARGS;
 369       int py_frame_low = frame_low;
 370
 371       /* We cannot pass -1 to frame_low, as that would signify a
 372       relative backtrace from the tail of the stack.  So, in the case
 373       of frame_low == -1, assign and increment it.  */
 374       if (py_frame_low == -1)
 375         py_frame_low++;
 376
 377       result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags,
 378                                                print_values, current_uiout,
 379                                                py_frame_low, frame_high);
 380     }
 381
 382      /* Run the inbuilt backtrace if there are no filters registered, or
 383       if "--no-frame-filters" has been specified from the command.  */
 384    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 385      {
 386       /* Now let's print the frames up to frame_high, or until there are
 387          frames in the stack.  */
 388       for (;
 389            fi && (i <= frame_high || frame_high == -1);
 390            i++, fi = get_prev_frame (fi))
 391         {
 392           struct cleanup *cleanup_frame;
 393
 394           QUIT;
 395           cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
 396           ui_out_field_int (uiout, "level", i);
 397           list_args_or_locals (arguments, print_values, fi, skip_unavailable);
 398           do_cleanups (cleanup_frame);
 399         }
 400     }
 401   do_cleanups (cleanup_stack_args);
 402 }
 403
 404 /* Print a list of the local variables (including arguments) for the
 405    current frame.  ARGC must be 1 and ARGV[0] specify if only the names,
 406    or both names and values of the variables must be printed.  See
 407    parse_print_value for possible values.  */
 408
 409 void
 410 mi_cmd_stack_list_variables (char *command, char **argv, int argc)
 411 {
 412   struct frame_info *frame;
 413   int raw_arg = 0;
 414   enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
 415   enum print_values print_value;
 416   int oind = 0;
 417   int skip_unavailable = 0;
 418
 419   if (argc > 1)
 420     {
 421       int i;
 422       enum opt
 423       {
 424         NO_FRAME_FILTERS,
 425         SKIP_UNAVAILABLE,
 426       };
 427       static const struct mi_opt opts[] =
 428         {
 429           {"-no-frame-filters", NO_FRAME_FILTERS, 0},
 430           {"-skip-unavailable", SKIP_UNAVAILABLE, 0},
 431           { 0, 0, 0 }
 432         };
 433
 434       while (1)
 435         {
 436           char *oarg;
 437           /* Don't parse 'print-values' as an option.  */
 438           int opt = mi_getopt ("-stack-list-variables", argc - 1,
 439                                argv, opts, &oind, &oarg);
 440           if (opt < 0)
 441             break;
 442           switch ((enum opt) opt)
 443             {
 444             case NO_FRAME_FILTERS:
 445               raw_arg = oind;
 446               break;
 447             case SKIP_UNAVAILABLE:
 448               skip_unavailable = 1;
 449               break;
 450             }
 451         }
 452     }
 453
 454   /* After the last option is parsed, there should be only
 455      'print-values'.  */
 456   if (argc - oind != 1)
 457     error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
 458              "[--skip-unavailable] PRINT_VALUES"));
 459
 460    frame = get_selected_frame (NULL);
 461    print_value = mi_parse_print_values (argv[oind]);
 462
 463    if (! raw_arg && frame_filters)
 464      {
 465        int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
 466
 467        result = mi_apply_ext_lang_frame_filter (frame, flags,
 468                                                 print_value,
 469                                                 current_uiout, 0, 0);
 470      }
 471
 472    /* Run the inbuilt backtrace if there are no filters registered, or
 473       if "--no-frame-filters" has been specified from the command.  */
 474    if (! frame_filters || raw_arg  || result == EXT_LANG_BT_NO_FILTERS)
 475      {
 476        list_args_or_locals (all, print_value, frame,
 477                             skip_unavailable);
 478      }
 479 }
 480
 481 /* Print single local or argument.  ARG must be already read in.  For
 482    WHAT and VALUES see list_args_or_locals.
 483
 484    Errors are printed as if they would be the parameter value.  Use
 485    zeroed ARG iff it should not be printed according to VALUES.  If
 486    SKIP_UNAVAILABLE is true, only print ARG if it is available.  */
 487
 488 static void
 489 list_arg_or_local (const struct frame_arg *arg, enum what_to_list what,
 490                    enum print_values values, int skip_unavailable)
 491 {
 492   struct cleanup *old_chain;
 493   struct ui_out *uiout = current_uiout;
 494   struct ui_file *stb;
 495
 496   gdb_assert (!arg->val || !arg->error);
 497   gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL
 498                && arg->error == NULL)
 499               || values == PRINT_SIMPLE_VALUES
 500               || (values == PRINT_ALL_VALUES
 501                   && (arg->val != NULL || arg->error != NULL)));
 502   gdb_assert (arg->entry_kind == print_entry_values_no
 503               || (arg->entry_kind == print_entry_values_only
 504                   && (arg->val || arg->error)));
 505
 506   if (skip_unavailable && arg->val != NULL
 507       && (value_entirely_unavailable (arg->val)
 508           /* A scalar object that does not have all bits available is
 509              also considered unavailable, because all bits contribute
 510              to its representation.  */
 511           || (val_print_scalar_type_p (value_type (arg->val))
 512               && !value_bytes_available (arg->val,
 513                                          value_embedded_offset (arg->val),
 514                                          TYPE_LENGTH (value_type (arg->val))))))
 515     return;
 516
 517   stb = mem_fileopen ();
 518   old_chain = make_cleanup_ui_file_delete (stb);
 519
 520   if (values != PRINT_NO_VALUES || what == all)
 521     make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 522
 523   fputs_filtered (SYMBOL_PRINT_NAME (arg->sym), stb);
 524   if (arg->entry_kind == print_entry_values_only)
 525     fputs_filtered ("@entry", stb);
 526   ui_out_field_stream (uiout, "name", stb);
 527
 528   if (what == all && SYMBOL_IS_ARGUMENT (arg->sym))
 529     ui_out_field_int (uiout, "arg", 1);
 530
 531   if (values == PRINT_SIMPLE_VALUES)
 532     {
 533       check_typedef (arg->sym->type);
 534       type_print (arg->sym->type, "", stb, -1);
 535       ui_out_field_stream (uiout, "type", stb);
 536     }
 537
 538   if (arg->val || arg->error)
 539     {
 540       const char *error_message = NULL;
 541
 542       if (arg->error)
 543         error_message = arg->error;
 544       else
 545         {
 546           TRY
 547             {
 548               struct value_print_options opts;
 549
 550               get_no_prettyformat_print_options (&opts);
 551               opts.deref_ref = 1;
 552               common_val_print (arg->val, stb, 0, &opts,
 553                                 language_def (SYMBOL_LANGUAGE (arg->sym)));
 554             }
 555           CATCH (except, RETURN_MASK_ERROR)
 556             {
 557               error_message = except.message;
 558             }
 559           END_CATCH
 560         }
 561       if (error_message != NULL)
 562         fprintf_filtered (stb, _("<error reading variable: %s>"),
 563                           error_message);
 564       ui_out_field_stream (uiout, "value", stb);
 565     }
 566
 567   do_cleanups (old_chain);
 568 }
 569
 570 /* Print a list of the objects for the frame FI in a certain form,
 571    which is determined by VALUES.  The objects can be locals,
 572    arguments or both, which is determined by WHAT.  If SKIP_UNAVAILABLE
 573    is true, only print the arguments or local variables whose values
 574    are available.  */
 575
 576 static void
 577 list_args_or_locals (enum what_to_list what, enum print_values values,
 578                      struct frame_info *fi, int skip_unavailable)
 579 {
 580   const struct block *block;
 581   struct symbol *sym;
 582   struct block_iterator iter;
 583   struct cleanup *cleanup_list;
 584   struct type *type;
 585   char *name_of_result;
 586   struct ui_out *uiout = current_uiout;
 587
 588   block = get_frame_block (fi, 0);
 589
 590   switch (what)
 591     {
 592     case locals:
 593       name_of_result = "locals";
 594       break;
 595     case arguments:
 596       name_of_result = "args";
 597       break;
 598     case all:
 599       name_of_result = "variables";
 600       break;
 601     default:
 602       internal_error (__FILE__, __LINE__,
 603                       "unexpected what_to_list: %d", (int) what);
 604     }
 605
 606   cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, name_of_result);
 607
 608   while (block != 0)
 609     {
 610       ALL_BLOCK_SYMBOLS (block, iter, sym)
 611         {
 612           int print_me = 0;
 613
 614           switch (SYMBOL_CLASS (sym))
 615             {
 616             default:
 617             case LOC_UNDEF:     /* catches errors        */
 618             case LOC_CONST:     /* constant              */
 619             case LOC_TYPEDEF:   /* local typedef         */
 620             case LOC_LABEL:     /* local label           */
 621             case LOC_BLOCK:     /* local function        */
 622             case LOC_CONST_BYTES:       /* loc. byte seq.        */
 623             case LOC_UNRESOLVED:        /* unresolved static     */
 624             case LOC_OPTIMIZED_OUT:     /* optimized out         */
 625               print_me = 0;
 626               break;
 627
 628             case LOC_ARG:       /* argument              */
 629             case LOC_REF_ARG:   /* reference arg         */
 630             case LOC_REGPARM_ADDR:      /* indirect register arg */
 631             case LOC_LOCAL:     /* stack local           */
 632             case LOC_STATIC:    /* static                */
 633             case LOC_REGISTER:  /* register              */
 634             case LOC_COMPUTED:  /* computed location     */
 635               if (what == all)
 636                 print_me = 1;
 637               else if (what == locals)
 638                 print_me = !SYMBOL_IS_ARGUMENT (sym);
 639               else
 640                 print_me = SYMBOL_IS_ARGUMENT (sym);
 641               break;
 642             }
 643           if (print_me)
 644             {
 645               struct symbol *sym2;
 646               struct frame_arg arg, entryarg;
 647
 648               if (SYMBOL_IS_ARGUMENT (sym))
 649                 sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
 650                                       block, VAR_DOMAIN,
 651                                       NULL).symbol;
 652               else
 653                 sym2 = sym;
 654               gdb_assert (sym2 != NULL);
 655
 656               memset (&arg, 0, sizeof (arg));
 657               arg.sym = sym2;
 658               arg.entry_kind = print_entry_values_no;
 659               memset (&entryarg, 0, sizeof (entryarg));
 660               entryarg.sym = sym2;
 661               entryarg.entry_kind = print_entry_values_no;
 662
 663               switch (values)
 664                 {
 665                 case PRINT_SIMPLE_VALUES:
 666                   type = check_typedef (sym2->type);
 667                   if (TYPE_CODE (type) != TYPE_CODE_ARRAY
 668                       && TYPE_CODE (type) != TYPE_CODE_STRUCT
 669                       && TYPE_CODE (type) != TYPE_CODE_UNION)
 670                     {
 671                 case PRINT_ALL_VALUES:
 672                   if (SYMBOL_IS_ARGUMENT (sym))
 673                     read_frame_arg (sym2, fi, &arg, &entryarg);
 674                   else
 675                     read_frame_local (sym2, fi, &arg);
 676                     }
 677                   break;
 678                 }
 679
 680               if (arg.entry_kind != print_entry_values_only)
 681                 list_arg_or_local (&arg, what, values, skip_unavailable);
 682               if (entryarg.entry_kind != print_entry_values_no)
 683                 list_arg_or_local (&entryarg, what, values, skip_unavailable);
 684               xfree (arg.error);
 685               xfree (entryarg.error);
 686             }
 687         }
 688
 689       if (BLOCK_FUNCTION (block))
 690         break;
 691       else
 692         block = BLOCK_SUPERBLOCK (block);
 693     }
 694   do_cleanups (cleanup_list);
 695 }
 696
 697 void
 698 mi_cmd_stack_select_frame (char *command, char **argv, int argc)
 699 {
 700   if (argc == 0 || argc > 1)
 701     error (_("-stack-select-frame: Usage: FRAME_SPEC"));
 702
 703   select_frame_command (argv[0], 1 /* not used */ );
 704 }
 705
 706 void
 707 mi_cmd_stack_info_frame (char *command, char **argv, int argc)
 708 {
 709   if (argc > 0)
 710     error (_("-stack-info-frame: No arguments allowed"));
 711
 712   print_frame_info (get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1);
 713 }