mi-cmd-break.c   [plain text]

/* MI Command Set - breakpoint and watchpoint commands.
   Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
   Contributed by Cygnus Solutions (a Red Hat company).

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "mi-cmds.h"
#include "ui-out.h"
#include "mi-out.h"
#include "breakpoint.h"
#include "gdb_string.h"
#include "mi-getopt.h"
#include "gdb-events.h"
#include "interpreter.h"
#include "gdb.h"

/* There really ought to be a global mi .h file for this stuff... */
extern struct gdb_interpreter *mi_interp;

enum
  {
    FROM_TTY = 0
  };

/* Output a single breakpoint. */

static void
breakpoint_notify (int b)
{
  gdb_breakpoint_query (uiout, b);
}


struct gdb_events breakpoint_hooks =
{
  breakpoint_notify,
  breakpoint_notify,
  breakpoint_notify,
};


enum bp_type
  {
    REG_BP,
    HW_BP,
    FUT_BP,
    REGEXP_BP
  };

/* Insert a breakpoint. The type of breakpoint is specified by the
   first argument: 
   -break-insert <location> --> insert a regular breakpoint.  
   -break-insert -t <location> --> insert a temporary breakpoint.  
   -break-insert -h <location> --> insert an hardware breakpoint.  
   -break-insert -t -h <location> --> insert a temporary hw bp.
   -break-insert -f <location> --> insert a future breakpoint.  
   -break-insert -r <regexp> --> insert a bp at functions matching
   <regexp> */

enum mi_cmd_result
mi_cmd_break_insert (char *command, char **argv, int argc)
{
  char *address = NULL;
  enum bp_type type = REG_BP;
  int temp_p = 0;
  int thread = -1;
  int ignore_count = 0;
  char *condition = NULL;
  enum gdb_rc rc;
  struct gdb_events *old_hooks;
  enum opt
    {
      HARDWARE_OPT, TEMP_OPT, FUTURE_OPT /*, REGEXP_OPT */ , CONDITION_OPT,
      IGNORE_COUNT_OPT, THREAD_OPT
    };
  static struct mi_opt opts[] =
  {
    {"h", HARDWARE_OPT, 0},
    {"t", TEMP_OPT, 0},
    {"f", FUTURE_OPT, 0},
    {"c", CONDITION_OPT, 1},
    {"i", IGNORE_COUNT_OPT, 1},
    {"p", THREAD_OPT, 1},
    0
  };

  /* Parse arguments. It could be -r or -h or -t, <location> or ``--''
     to denote the end of the option list. */
  int optind = 0;
  char *optarg;
  while (1)
    {
      int opt = mi_getopt ("mi_cmd_break_insert", argc, argv, opts, &optind, &optarg);
      if (opt < 0)
	break;
      switch ((enum opt) opt)
	{
	case TEMP_OPT:
	  temp_p = 1;
	  break;
	case HARDWARE_OPT:
	  type = HW_BP;
	  break;
	case FUTURE_OPT:
	  type = FUT_BP;
	  break;
#if 0
	case REGEXP_OPT:
	  type = REGEXP_BP;
	  break;
#endif
	case CONDITION_OPT:
	  condition = optarg;
	  break;
	case IGNORE_COUNT_OPT:
	  ignore_count = atol (optarg);
	  break;
	case THREAD_OPT:
	  thread = atol (optarg);
	  break;
	}
    }

  if (optind >= argc)
    error ("mi_cmd_break_insert: Missing <location>");
  if (optind < argc - 1)
    error ("mi_cmd_break_insert: Garbage following <location>");
  address = argv[optind];

  /* Now we have what we need, let's insert the breakpoint! */
  old_hooks = set_gdb_event_hooks (&breakpoint_hooks);
  switch (type)
    {
    case REG_BP:
      rc = gdb_breakpoint (address, condition,
			   0 /*hardwareflag */ , temp_p,
			   0 /* futureflag */, thread, ignore_count);
      break;
    case HW_BP:
      rc = gdb_breakpoint (address, condition,
			   1 /*hardwareflag */ , temp_p,
			   0 /* futureflag */, thread, ignore_count);
      break;
    case FUT_BP:
      rc = gdb_breakpoint (address, condition,
			   0, temp_p,
			   1 /* futureflag */, thread, ignore_count);
      break;

#if 0
    case REGEXP_BP:
      if (temp_p)
	error ("mi_cmd_break_insert: Unsupported tempoary regexp breakpoint");
      else
	rbreak_command_wrapper (address, FROM_TTY);
      return MI_CMD_DONE;
      break;
#endif
    default:
      internal_error (__FILE__, __LINE__,
		      "mi_cmd_break_insert: Bad switch.");
    }
  set_gdb_event_hooks (old_hooks);

  if (rc == GDB_RC_FAIL)
    return MI_CMD_CAUGHT_ERROR;
  else
    return MI_CMD_DONE;
}

enum wp_type
{
  REG_WP,
  READ_WP,
  ACCESS_WP
};

/* Insert a watchpoint. The type of watchpoint is specified by the
   first argument: 
   -break-watch <expr> --> insert a regular wp.  
   -break-watch -r <expr> --> insert a read watchpoint.
   -break-watch -a <expr> --> insert an access wp. */

enum mi_cmd_result
mi_cmd_break_watch (char *command, char **argv, int argc)
{
  char *expr = NULL;
  enum wp_type type = REG_WP;
  enum opt
    {
      READ_OPT, ACCESS_OPT
    };
  static struct mi_opt opts[] =
  {
    {"r", READ_OPT, 0},
    {"a", ACCESS_OPT, 0},
    0
  };

  /* Parse arguments. */
  int optind = 0;
  char *optarg;
  while (1)
    {
      int opt = mi_getopt ("mi_cmd_break_watch", argc, argv, opts, &optind, &optarg);
      if (opt < 0)
	break;
      switch ((enum opt) opt)
	{
	case READ_OPT:
	  type = READ_WP;
	  break;
	case ACCESS_OPT:
	  type = ACCESS_WP;
	  break;
	}
    }
  if (optind >= argc)
    error ("mi_cmd_break_watch: Missing <expression>");
  if (optind < argc - 1)
    error ("mi_cmd_break_watch: Garbage following <expression>");
  expr = argv[optind];

  /* Now we have what we need, let's insert the watchpoint! */
  switch (type)
    {
    case REG_WP:
      watch_command_wrapper (expr, FROM_TTY);
      break;
    case READ_WP:
      rwatch_command_wrapper (expr, FROM_TTY);
      break;
    case ACCESS_WP:
      awatch_command_wrapper (expr, FROM_TTY);
      break;
    default:
      error ("mi_cmd_break_watch: Unknown watchpoint type.");
    }
  return MI_CMD_DONE;
}

void
mi_interp_create_breakpoint_hook (struct breakpoint *bpt)
{
  CORE_ADDR unusued_addr;
  struct ui_out *saved_ui_out = uiout;
  struct mi_out *tmp_mi_out;

  uiout = mi_interp->interpreter_out;

  /* This is a little inefficient, but it probably isn't worth adding
     a gdb_breakpoint_query that takes a bpt structure... */

  ui_out_list_begin (uiout, "MI_HOOK_RESULT");
  ui_out_field_string (uiout, "HOOK_TYPE", "breakpoint_create");
  gdb_breakpoint_query (uiout, bpt->number);
  ui_out_list_end (uiout);
  uiout = saved_ui_out; 
}

void
mi_interp_modify_breakpoint_hook (struct breakpoint *bpt)
{

  CORE_ADDR unusued_addr;
  struct ui_out *saved_ui_out = uiout;
  struct mi_out *tmp_mi_out;

  uiout = mi_interp->interpreter_out;

  /* This is a little inefficient, but it probably isn't worth adding
     a gdb_breakpoint_query that takes a bpt structure... */

  ui_out_list_begin (uiout, "MI_HOOK_RESULT");
  ui_out_field_string (uiout, "HOOK_TYPE", "breakpoint_modify");
  gdb_breakpoint_query (uiout, bpt->number);
  ui_out_list_end (uiout);
  uiout = saved_ui_out; 
}

void
mi_interp_delete_breakpoint_hook (struct breakpoint *bpt)
{
  CORE_ADDR unusued_addr;
  struct ui_out *saved_ui_out = uiout;
  struct mi_out *tmp_mi_out;

  uiout = mi_interp->interpreter_out;

  /* This is a little inefficient, but it probably isn't worth adding
     a gdb_breakpoint_query that takes a bpt structure... */

  ui_out_list_begin (uiout, "MI_HOOK_RESULT");
  ui_out_field_string (uiout, "HOOK_TYPE", "breakpoint_delete");
  ui_out_field_int (uiout, "bkptno", bpt->number);
  ui_out_list_end (uiout);
  uiout = saved_ui_out; 

}