pcsx2/common/include/x86emitter/implement/incdec.h

54 lines
1.5 KiB
C++

/* Pcsx2 - Pc Ps2 Emulator
* Copyright (C) 2002-2009 Pcsx2 Team
*
* 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 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#pragma once
// Implementations found here: Increment and Decrement Instructions!
// Note: This header is meant to be included from within the x86Emitter::Internal namespace.
template< bool isDec >
class xImpl_IncDec
{
public:
template< typename T >
__forceinline void operator()( const xRegister<T>& to ) const
{
if( Is8BitOp<T>() )
{
xWrite8( 0xfe );
EmitSibMagic( isDec ? 1 : 0, to );
}
else
{
prefix16<T>();
xWrite8( (isDec ? 0x48 : 0x40) | to.Id );
}
}
template< typename T >
__forceinline void operator()( const ModSibStrict<T>& sibdest ) const
{
prefix16<T>();
xWrite8( Is8BitOp<T>() ? 0xfe : 0xff );
EmitSibMagic( isDec ? 1 : 0, sibdest );
}
xImpl_IncDec() {} // don't ask.
};