md-abi.hpp

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/* src/vm/jit/powerpc/netbsd/md-abi.hpp - defines for PowerPC NetBSD ABI

   Copyright (C) 1996-2013
   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO

   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., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

   Contact: cacao@cacaojvm.org

   Authors: Christian Thalinger

   Changes:

*/


#ifndef MD_ABI_HPP_
#define MD_ABI_HPP_ 1

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

/* integer registers */
  
#define REG_RESULT       3   /* to deliver method results                     */
#define REG_RESULT2      4   /* to deliver long method results                */

#define REG_PV          13   /* procedure vector, must be provided by caller  */
#define REG_METHODPTR   12   /* pointer to the place from where the procedure */
                             /* vector has been fetched                       */
#define REG_ITMP1       11   /* temporary register                            */
#define REG_ITMP2       12   /* temporary register and method pointer         */
#define REG_ITMP3       16   /* temporary register                            */

#define REG_ITMP1_XPTR  11   /* exception pointer = temporary register 1      */
#define REG_ITMP2_XPC   12   /* exception pc = temporary register 2           */

#define REG_SP           1   /* stack pointer                                 */
#define REG_ZERO         0   /* almost always zero: only in address calc.     */

/* floating point registers */

#define REG_FRESULT      1   /* to deliver floating point method results      */
#define REG_FTMP1       16   /* temporary floating point register             */
#define REG_FTMP2       17   /* temporary floating point register             */
#define REG_FTMP3        0   /* temporary floating point register             */

#define REG_IFTMP        0   /* temporary integer and floating point register */


#define INT_REG_CNT     32   /* number of integer registers                   */
#define INT_SAV_CNT     10   /* number of int callee saved registers          */
#define INT_ARG_CNT      8   /* number of int argument registers              */
#define INT_TMP_CNT      7   /* number of integer temporary registers         */
#define INT_RES_CNT      7   /* number of integer reserved registers          */

#define FLT_REG_CNT     32   /* number of float registers                     */
#define FLT_SAV_CNT     10   /* number of float callee saved registers        */
#define FLT_ARG_CNT      8   /* number of float argument registers            */
#define FLT_TMP_CNT     11   /* number of float temporary registers           */
#define FLT_RES_CNT      3   /* number of float reserved registers            */


/* ABI defines ****************************************************************/

#define LA_SIZE          8   /* linkage area size                             */
#define LA_SIZE_ALIGNED 16   /* linkage area size aligned to 16-byte          */
#define LA_WORD_SIZE     2   /* linkage area size in words: 2 * 4 = 8         */

#define LA_LR_OFFSET     4   /* link register offset in linkage area          */

/* #define ALIGN_FRAME_SIZE(sp)       (sp) */

#endif // MD_ABI_HPP_


/*
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 * Please do not remove this and leave it at the end of the file, where
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