/* src/vm/jit/mips/arch.h - architecture defines for MIPS

   Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   Institut f. Computersprachen - TU Wien

   This file is part of CACAO.

   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, 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.

   Contact: cacao@complang.tuwien.ac.at

   Authors: Christian Thalinger

   Changes:

   $Id: arch.h 2444 2005-05-11 12:51:53Z twisti $

*/


#ifndef _ARCH_H
#define _ARCH_H

/* preallocated registers *****************************************************/

/* integer registers */
  
#define REG_ZERO        0    /* always zero                                   */

#define REG_RESULT      2    /* to deliver method results                     */

#define REG_ITMP1       1    /* temporary register                            */
#define REG_ITMP2       3    /* temporary register and method pointer         */
#define REG_ITMP3       25   /* temporary register                            */

#define REG_ARG_0       4    /* argument register                             */
#define REG_ARG_1       5    /* argument register                             */
#define REG_ARG_2       6    /* argument register                             */
#define REG_ARG_3       7    /* argument register                             */
#define REG_ARG_4       8    /* argument register                             */
#define REG_ARG_5       9    /* argument register                             */

#define REG_RA          31   /* return address                                */
#define REG_SP          29   /* stack pointer                                 */
#define REG_GP          28   /* global pointer                                */

#define REG_PV          30   /* procedure vector, must be provided by caller  */
#define REG_METHODPTR   25   /* pointer to the place from where the procedure */
                             /* vector has been fetched                       */
#define REG_ITMP1_XPTR  1    /* exception pointer = temporary register 1      */
#define REG_ITMP2_XPC   3    /* exception pc = temporary register 2           */


/* floating point registers */

#define REG_FRESULT     0    /* to deliver floating point method results      */

#define REG_FTMP1       1    /* temporary floating point register             */
#define REG_FTMP2       2    /* temporary floating point register             */
#define REG_FTMP3       3    /* temporary floating point register             */

#define REG_IFTMP       1    /* temporary integer and floating point register */


#define INT_REG_CNT     32   /* number of integer registers                   */
#define INT_SAV_CNT     8    /* number of int callee saved registers          */
#define INT_ARG_CNT     8    /* number of int argument registers              */
#define INT_TMP_CNT     5    /* number of integer temporary registers         */
#define INT_RES_CNT     3    /* number of integer reserved registers          */

#define FLT_REG_CNT     32   /* number of float registers                     */
#define FLT_SAV_CNT     4    /* number of flt callee saved registers          */
#define FLT_ARG_CNT     8    /* number of flt argument registers              */
#define FLT_TMP_CNT     15   /* number of float temporary registers           */
#define FLT_RES_CNT     3    /* number of float reserved registers            */

#define TRACE_ARGS_NUM  8


/* define architecture features ***********************************************/

#define POINTERSIZE                      8
#define WORDS_BIGENDIAN                  1

#define U8_AVAILABLE                     1

/* #define USE_CODEMMAP */

#define USEBUILTINTABLE

#define SUPPORT_DIVISION                 0
#define SUPPORT_LONG                     1
#define SUPPORT_FLOAT                    1
#define SUPPORT_DOUBLE                   1

#define SUPPORT_FMOD                     1
#define SUPPORT_IFCVT                    1
#define SUPPORT_FICVT                    0

#define SUPPORT_LONG_ADD                 1
#define SUPPORT_LONG_CMP                 1
#define SUPPORT_LONG_LOGICAL             1
#define SUPPORT_LONG_SHIFT               1
#define SUPPORT_LONG_MUL                 1
#define SUPPORT_LONG_DIV                 0
#define SUPPORT_LONG_ICVT                0
#define SUPPORT_LONG_FCVT                1

#define SUPPORT_CONST_LOGICAL            1  /* AND, OR, XOR with immediates   */
#define SUPPORT_CONST_MUL                1  /* mutiply with immediate         */

#define SUPPORT_CONST_STORE              1  /* do we support const stores     */
#define SUPPORT_CONST_STORE_ZERO_ONLY    1  /* on some risc machines we can   */
                                            /* only store REG_ZERO            */

/* #define CONDITIONAL_LOADCONST           1 */

/* #define CONSECUTIVE_INTEGER_ARGS */
/* #define CONSECUTIVE_FLOAT_ARGS */

#endif /* _ARCH_H */


/*
 * These are local overrides for various environment variables in Emacs.
 * Please do not remove this and leave it at the end of the file, where
 * Emacs will automagically detect them.
 * ---------------------------------------------------------------------
 * Local variables:
 * mode: c
 * indent-tabs-mode: t
 * c-basic-offset: 4
 * tab-width: 4
 * End:
 */