/* 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 . */ #pragma once // Implementations here cover SHLD and SHRD. // Note: This header is meant to be included from within the x86Emitter::Internal namespace. ////////////////////////////////////////////////////////////////////////////////////////// // I use explicit method declarations here instead of templates, in order to provide // *only* 32 and 16 bit register operand forms (8 bit registers are not valid in SHLD/SHRD). // // Optimization Note: Imm shifts by 0 are ignore (no code generated). This is a safe optimization // because shifts by 0 do *not* affect flags status. // template< bool isShiftRight > class DwordShiftImplAll { static const u8 m_shiftop = isShiftRight ? 0x8 : 0; public: // ---------- 32 Bit Interface ----------- __forceinline void operator()( const xRegister32& to, const xRegister32& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0xa5 | m_shiftop, to, from ); } __forceinline void operator()( void* dest, const xRegister32& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0xa5 | m_shiftop, from, dest ); } __forceinline void operator()( const ModSibBase& dest, const xRegister32& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0xa5 | m_shiftop, from, dest ); } __forceinline void operator()( const xRegister32& to, const xRegister32& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0xa4 | m_shiftop, to, from ); } __forceinline void operator()( void* dest, const xRegister32& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0xa4 | m_shiftop, from, dest, shiftcnt ); } __forceinline void operator()( const ModSibBase& dest, const xRegister32& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0xa4 | m_shiftop, from, dest, shiftcnt ); } // ---------- 16 Bit Interface ----------- __forceinline void operator()( const xRegister16& to, const xRegister16& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0x66, 0xa5 | m_shiftop, to, from ); } __forceinline void operator()( void* dest, const xRegister16& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0x66, 0xa5 | m_shiftop, from, dest ); } __forceinline void operator()( const ModSibBase& dest, const xRegister16& from, __unused const xRegisterCL& clreg ) const { xOpWrite0F( 0x66, 0xa5 | m_shiftop, from, dest ); } __forceinline void operator()( const xRegister16& to, const xRegister16& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0x66, 0xa4 | m_shiftop, to, from ); } __forceinline void operator()( void* dest, const xRegister16& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0x66, 0xa4 | m_shiftop, from, dest, shiftcnt ); } __forceinline void operator()( const ModSibBase& dest, const xRegister16& from, u8 shiftcnt ) const { if( shiftcnt != 0 ) xOpWrite0F( 0x66, 0xa4 | m_shiftop, from, dest, shiftcnt ); } DwordShiftImplAll() {} // Why does GCC need these? };