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

/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2015  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

// Implement BMI1/BMI2 instruction set

namespace x86Emitter
{

struct xImplBMI_RVM
{
    u8 Prefix;
    u8 MbPrefix;
    u8 Opcode;

    // RVM
    // MULX 	Unsigned multiply without affecting flags, and arbitrary destination registers
    // PDEP 	Parallel bits deposit
    // PEXT 	Parallel bits extract
    // ANDN 	Logical and not 	~x & y
    void operator()(const xRegisterInt &to, const xRegisterInt &from1, const xRegisterInt &from2) const;
    void operator()(const xRegisterInt &to, const xRegisterInt &from1, const xIndirectVoid &from2) const;

#if 0
		// RMV
		// BEXTR 	Bit field extract (with register) 	(src >> start) & ((1 << len)-1)[9]
		// BZHI 	Zero high bits starting with specified bit position
		// SARX 	Shift arithmetic right without affecting flags
		// SHRX 	Shift logical right without affecting flags
		// SHLX 	Shift logical left without affecting flags
		// FIXME: WARNING same as above but V and M are inverted
		//void operator()( const xRegisterInt& to, const xRegisterInt& from1, const xRegisterInt& from2) const;
		//void operator()( const xRegisterInt& to, const xIndirectVoid& from1, const xRegisterInt& from2) const;

		// VM
		// BLSI 	Extract lowest set isolated bit 	x & -x
		// BLSMSK 	Get mask up to lowest set bit 	x ^ (x - 1)
		// BLSR 	Reset lowest set bit 	x & (x - 1)
		void operator()( const xRegisterInt& to, const xRegisterInt& from) const;
		void operator()( const xRegisterInt& to, const xIndirectVoid& from) const;

		// RMI
		//RORX 	Rotate right logical without affecting flags
		void operator()( const xRegisterInt& to, const xRegisterInt& from, u8 imm) const;
		void operator()( const xRegisterInt& to, const xIndirectVoid& from, u8 imm) const;
#endif
};
}