/* src/vm/jit/i386/arch.h - architecture defines for i386

   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 2477 2005-05-13 14:04:16Z twisti $

*/


#ifndef _ARCH_H
#define _ARCH_H


/* define x86 register numbers ************************************************/

#define EAX    0
#define ECX    1
#define EDX    2
#define EBX    3
#define ESP    4
#define EBP    5
#define ESI    6
#define EDI    7


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

/* integer registers */
  
#define REG_RESULT      EAX     /* to deliver method results                  */
#define REG_RESULT2     EDX     /* to deliver long method results             */

#define REG_ITMP1       EAX     /* temporary register                         */
#define REG_ITMP2       ECX     /* temporary register                         */
#define REG_ITMP3       EDX     /* temporary register                         */

#define REG_NULL        -1      /* used for reg_of_var where d is not needed  */

#define REG_ITMP1_XPTR  EAX     /* exception pointer = temporary register 1   */
#define REG_ITMP2_XPC   ECX     /* exception pc = temporary register 2        */

#define REG_SP          ESP     /* stack pointer                              */

/* floating point registers */

#define REG_FRESULT     0       /* to deliver floating point method results   */
#define REG_FTMP1       6       /* temporary floating point register          */
#define REG_FTMP2       7       /* temporary floating point register          */
#define REG_FTMP3       7       /* temporary floating point register          */


#define INT_REG_CNT     8       /* number of integer registers                */
#define INT_SAV_CNT     3       /* number of integer callee saved registers   */
#define INT_ARG_CNT     0       /* number of integer argument registers       */
#define INT_TMP_CNT     1       /* number of integer temporary registers      */
#define INT_RES_CNT     3       /* numebr of integer reserved registers       */

#define FLT_REG_CNT     8       /* number of float registers                  */
#define FLT_SAV_CNT     0       /* number of float callee saved registers     */
#define FLT_ARG_CNT     0       /* number of float argument registers         */
#define FLT_TMP_CNT     0       /* number of float temporary registers        */
#define FLT_RES_CNT     8       /* numebr of float reserved registers         */

#define TRACE_ARGS_NUM  8

#define REG_RES_CNT     3    /* number of reserved registers                  */


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

#define POINTERSIZE                      4
#define WORDS_BIGENDIAN                  0

#define U8_AVAILABLE                     1

#define USE_CODEMMAP                     1

#define USEBUILTINTABLE

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

#define SUPPORT_IFCVT                    1
#define SUPPORT_FICVT                    1

#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                1
#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    0  /* on some risc machines we can   */
                                            /* only store REG_ZERO            */

#define CONDITIONAL_LOADCONST            1
	 
#define HAS_4BYTE_STACKSLOT
/* define SUPPORT_COMBINE_INTEGER_REGISTERS */

/*  #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:
 */