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/******************************** -*- C -*- ****************************
*
* Run-time assembler for the i386
*
***********************************************************************/
/***********************************************************************
*
* Copyright 2003 Gwenole Beauchesne
* Copyright 2006 Free Software Foundation, Inc.
*
* This file is part of GNU lightning.
*
* GNU lightning is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU lightning 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GNU lightning; see the file COPYING.LESSER; if not, write to the
* Free Software Foundation, 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*
***********************************************************************/
#ifndef __lightning_asm_h
#define __lightning_asm_h
#ifndef LIGHTNING_DEBUG
/* OPCODE + i = immediate operand
* + r = register operand
* + m = memory operand (disp,base,index,scale)
* + sr/sm = a star preceding a register or memory
*/
#if !_ASM_SAFETY
# define _r1(R) _rN(R)
# define _r2(R) _rN(R)
# define _r4(R) _rN(R)
# define _r8(R) _rN(R)
# define _rM(R) _rN(R)
# define _rX(R) _rN(R)
#else
/* _r1() used to check only for _AL and _AH but there is
* usage of _CL and _DL when _*AX is already an operand */
# define _r1(R) \
/* Valid 32 bit register? */ \
((!((R) & ~0x77) \
/* 32, 16 or 8 bit register? */ \
&& (((_rC(R) == 0x40 || _rC(R) == 0x30 || _rC(R) == 0x10) \
/* Yes. Register is _AL, _CL or _DL? */ \
&& ( (_rN(R) | 0x10) == _AL \
|| (_rN(R) | 0x10) == _CL \
|| (_rN(R) | 0x10) == _DL)) \
/* No. Register is _AH? */ \
|| ((_rC(R) == 0x20 && (_rN(R) | 0x20) == _AH)))) \
? _rN(R) : JITFAIL("bad 8-bit register " #R))
# define _r2(R) \
/* Valid 32 bit register? */ \
((!((R) & ~0x77) \
/* 32, 16 or 8 bit register? */ \
&& (_rC(R) == 0x40 || _rC(R) == 0x30 || _rC(R) == 0x10)) \
? _rN(R) : JITFAIL("bad 16-bit register " #R))
# define _r4(R) \
/* Valid 32 bit register? */ \
((!((R) & ~0x77) \
/* 32, 16 or 8 bit register? */ \
&& (_rC(R) == 0x40 || _rC(R) == 0x30 || _rC(R) == 0x10)) \
? _rN(R) : JITFAIL("bad 32-bit register " #R))
# define _r8(R) \
JITFAIL("bad 64-bit register " #R)
# define _rM(R) \
/* Valid MMX register? */ \
((!((R) & ~0x67) && _rC(R) == 0x60) \
? _rN(R) : JITFAIL("bad MMX register " #R))
# define _rX(R) \
/* Valid SSE register? */ \
((!((R) & ~0x77) && _rC(R) == 0x70) \
? _rN(R) : JITFAIL("bad SSE register " #R))
#endif
#define _rA(R) _r4(R)
#define jit_check8(rs) ((_rN(rs) | _AL) == _AL)
#define jit_reg8(rs) \
((jit_reg16(rs) == _SI || jit_reg16(rs) == _DI) \
? _AL : (_rN(rs) | _AL))
#define jit_reg16(rs) (_rN(rs) | _AX)
/* Use RIP-addressing in 64-bit mode, if possible */
#define _r_X( R, D,B,I,S,O) (_r0P(I) ? (_r0P(B) ? _r_D (R,D ) : \
(_rsp12P(B) ? _r_DBIS(R,D,_ESP,_ESP,1) : \
_r_DB (R,D, B ))) : \
(_r0P(B) ? _r_4IS (R,D, I,S) : \
(!_rspP(I) ? _r_DBIS(R,D, B, I,S) : \
JITFAIL("illegal index register: %esp"))))
#define _m32only(X) (X)
#define _m64only(X) JITFAIL("invalid instruction in 32-bit mode")
#define _m64(X) ((void)0)
#define _AH 0x24
#define _CH 0x25
#define _DH 0x26
#define _BH 0x27
#define CALLsr(R) CALLLsr(R)
#define JMPsr(R) JMPLsr(R)
#define DECWr(RD) (_d16(), _Or (0x48,_r2(RD) ))
#define DECLr(RD) _Or (0x48,_r4(RD) )
#define INCWr(RD) (_d16(), _Or (0x40,_r2(RD) ))
#define INCLr(RD) _Or (0x40,_r4(RD) )
#endif
#endif /* __lightning_asm_h */
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