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

/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2009  PCSX2 Dev Team
 * 
 *  PCSX2 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 Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 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 PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#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.
};