gdb/mi/mi-cmd-break.c

   1 /* MI Command Set - breakpoint and watchpoint commands.
   2    Copyright 2000, 2001 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 2 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, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "mi-cmds.h"
  24 #include "ui-out.h"
  25 #include "mi-out.h"
  26 #include "breakpoint.h"
  27 #include "gdb_string.h"
  28 #include "mi-getopt.h"
  29 #include "gdb-events.h"
  30 #include "gdb.h"
  31
  32 /* Convenience macro for allocting typesafe memory. */
  33
  34 #undef XMALLOC
  35 #define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
  36
  37 enum
  38   {
  39     FROM_TTY = 0
  40   };
  41
  42 /* Output a single breakpoint. */
  43
  44 static void
  45 breakpoint_notify (int b)
  46 {
  47   gdb_breakpoint_query (uiout, b);
  48 }
  49
  50
  51 struct gdb_events breakpoint_hooks =
  52 {
  53   breakpoint_notify,
  54   breakpoint_notify,
  55   breakpoint_notify,
  56 };
  57
  58
  59 enum bp_type
  60   {
  61     REG_BP,
  62     HW_BP,
  63     REGEXP_BP
  64   };
  65
  66 /* Insert a breakpoint. The type of breakpoint is specified by the
  67    first argument: -break-insert <location> --> insert a regular
  68    breakpoint.  -break-insert -t <location> --> insert a temporary
  69    breakpoint.  -break-insert -h <location> --> insert an hardware
  70    breakpoint.  -break-insert -t -h <location> --> insert a temporary
  71    hw bp.
  72    -break-insert -r <regexp> --> insert a bp at functions matching
  73    <regexp> */
  74
  75 enum mi_cmd_result
  76 mi_cmd_break_insert (char *command, char **argv, int argc)
  77 {
  78   char *address = NULL;
  79   enum bp_type type = REG_BP;
  80   int temp_p = 0;
  81   int thread = -1;
  82   int ignore_count = 0;
  83   char *condition = NULL;
  84   enum gdb_rc rc;
  85   struct gdb_events *old_hooks;
  86   enum opt
  87     {
  88       HARDWARE_OPT, TEMP_OPT /*, REGEXP_OPT */ , CONDITION_OPT,
  89       IGNORE_COUNT_OPT, THREAD_OPT
  90     };
  91   static struct mi_opt opts[] =
  92   {
  93     {"h", HARDWARE_OPT, 0},
  94     {"t", TEMP_OPT, 0},
  95     {"c", CONDITION_OPT, 1},
  96     {"i", IGNORE_COUNT_OPT, 1},
  97     {"p", THREAD_OPT, 1},
  98     0
  99   };
 100
 101   /* Parse arguments. It could be -r or -h or -t, <location> or ``--''
 102      to denote the end of the option list. */
 103   int optind = 0;
 104   char *optarg;
 105   while (1)
 106     {
 107       int opt = mi_getopt ("mi_cmd_break_insert", argc, argv, opts, &optind, &optarg);
 108       if (opt < 0)
 109         break;
 110       switch ((enum opt) opt)
 111         {
 112         case TEMP_OPT:
 113           temp_p = 1;
 114           break;
 115         case HARDWARE_OPT:
 116           type = HW_BP;
 117           break;
 118 #if 0
 119         case REGEXP_OPT:
 120           type = REGEXP_BP;
 121           break;
 122 #endif
 123         case CONDITION_OPT:
 124           condition = optarg;
 125           break;
 126         case IGNORE_COUNT_OPT:
 127           ignore_count = atol (optarg);
 128           break;
 129         case THREAD_OPT:
 130           thread = atol (optarg);
 131           break;
 132         }
 133     }
 134
 135   if (optind >= argc)
 136     error ("mi_cmd_break_insert: Missing <location>");
 137   if (optind < argc - 1)
 138     error ("mi_cmd_break_insert: Garbage following <location>");
 139   address = argv[optind];
 140
 141   /* Now we have what we need, let's insert the breakpoint! */
 142   old_hooks = set_gdb_event_hooks (&breakpoint_hooks);
 143   switch (type)
 144     {
 145     case REG_BP:
 146       rc = gdb_breakpoint (address, condition,
 147                            0 /*hardwareflag */ , temp_p,
 148                            thread, ignore_count);
 149       break;
 150     case HW_BP:
 151       rc = gdb_breakpoint (address, condition,
 152                            1 /*hardwareflag */ , temp_p,
 153                            thread, ignore_count);
 154       break;
 155 #if 0
 156     case REGEXP_BP:
 157       if (temp_p)
 158         error ("mi_cmd_break_insert: Unsupported tempoary regexp breakpoint");
 159       else
 160         rbreak_command_wrapper (address, FROM_TTY);
 161       return MI_CMD_DONE;
 162       break;
 163 #endif
 164     default:
 165       internal_error (__FILE__, __LINE__,
 166                       "mi_cmd_break_insert: Bad switch.");
 167     }
 168   set_gdb_event_hooks (old_hooks);
 169
 170   if (rc == GDB_RC_FAIL)
 171     return MI_CMD_CAUGHT_ERROR;
 172   else
 173     return MI_CMD_DONE;
 174 }
 175
 176 enum wp_type
 177 {
 178   REG_WP,
 179   READ_WP,
 180   ACCESS_WP
 181 };
 182
 183 /* Insert a watchpoint. The type of watchpoint is specified by the
 184    first argument:
 185    -break-watch <expr> --> insert a regular wp.
 186    -break-watch -r <expr> --> insert a read watchpoint.
 187    -break-watch -a <expr> --> insert an access wp. */
 188
 189 enum mi_cmd_result
 190 mi_cmd_break_watch (char *command, char **argv, int argc)
 191 {
 192   char *expr = NULL;
 193   enum wp_type type = REG_WP;
 194   enum opt
 195     {
 196       READ_OPT, ACCESS_OPT
 197     };
 198   static struct mi_opt opts[] =
 199   {
 200     {"r", READ_OPT, 0},
 201     {"a", ACCESS_OPT, 0},
 202     0
 203   };
 204
 205   /* Parse arguments. */
 206   int optind = 0;
 207   char *optarg;
 208   while (1)
 209     {
 210       int opt = mi_getopt ("mi_cmd_break_watch", argc, argv, opts, &optind, &optarg);
 211       if (opt < 0)
 212         break;
 213       switch ((enum opt) opt)
 214         {
 215         case READ_OPT:
 216           type = READ_WP;
 217           break;
 218         case ACCESS_OPT:
 219           type = ACCESS_WP;
 220           break;
 221         }
 222     }
 223   if (optind >= argc)
 224     error ("mi_cmd_break_watch: Missing <expression>");
 225   if (optind < argc - 1)
 226     error ("mi_cmd_break_watch: Garbage following <expression>");
 227   expr = argv[optind];
 228
 229   /* Now we have what we need, let's insert the watchpoint! */
 230   switch (type)
 231     {
 232     case REG_WP:
 233 #ifdef UI_OUT
 234       watch_command_wrapper (expr, FROM_TTY);
 235 #endif
 236       break;
 237     case READ_WP:
 238 #ifdef UI_OUT
 239       rwatch_command_wrapper (expr, FROM_TTY);
 240 #endif
 241       break;
 242     case ACCESS_WP:
 243 #ifdef UI_OUT
 244       awatch_command_wrapper (expr, FROM_TTY);
 245 #endif
 246       break;
 247     default:
 248       error ("mi_cmd_break_watch: Unknown watchpoint type.");
 249     }
 250   return MI_CMD_DONE;
 251 }