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

51 lines
1.4 KiB
C++

/* 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.
};