Subversion Repositories openrisc_2011-10-31

/* Header for GDB Simulator wrapper for Or1ksim

   Copyright 1988-2008, Free Software Foundation, Inc.

   Copyright (C) 2010 Embecosm Limited

   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

   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 3 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, see <http://www.gnu.org/licenses/>.  */

/*---------------------------------------------------------------------------*/

/* This is a wrapper for Or1ksim, suitable for use as a GDB simulator.

   The code tries to follow the GDB coding style.

   Commenting is Doxygen compatible.                                         */

/*---------------------------------------------------------------------------*/

/*! GDB signal indiating breakpoint hit */

#define TARGET_SIGNAL_TRAP  5

/*! Number of registers */

#define  OR32_MAX_GPRS  32

/* Particular registers */

#define OR32_FIRST_ARG_REGNUM  3                        /*!< First arg reg */

#define OR32_PPC_REGNUM        (OR32_MAX_GPRS + 0)      /*!< Previous PC */

#define OR32_NPC_REGNUM        (OR32_MAX_GPRS + 1)      /*!< Next PC */

#define OR32_SR_REGNUM         (OR32_MAX_GPRS + 2)      /*!< Supervision Reg */

/* ------------------------------------------------------------------------- */

/*!A structure to hold the state of a simulation instance.

   This is the typedef SIM_DESC.

   The entries are

   - the socket descriptor for reading/writing from/to the model process

   - a flag which is true if we are used for debug rather than standalone

   - the callback function supplied to the sim_open () function

   - this simulator's name (argv[0] supplied to sim_open ()

   - the PID of the child process running the model (0 if we are the child)  */

/* ------------------------------------------------------------------------- */

struct sim_state

{

  int                          sockd;

  int                          is_debug;

  struct host_callback_struct *callback;

  char                        *myname;

  int                          pid;

};