// SPDX-FileCopyrightText: 2002-2023 PCSX2 Dev Team // SPDX-License-Identifier: LGPL-3.0+ #pragma once namespace x86Emitter { // Implementations here cover SHLD and SHRD. // -------------------------------------------------------------------------------------- // xImpl_DowrdShift // -------------------------------------------------------------------------------------- // 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 (intel docs cited). // struct xImpl_DwordShift { u16 OpcodeBase; void operator()(const xRegister16or32or64& to, const xRegister16or32or64& from, const xRegisterCL& clreg) const; void operator()(const xRegister16or32or64& to, const xRegister16or32or64& from, u8 shiftcnt) const; void operator()(const xIndirectVoid& dest, const xRegister16or32or64& from, const xRegisterCL& clreg) const; void operator()(const xIndirectVoid& dest, const xRegister16or32or64& from, u8 shiftcnt) const; }; } // End namespace x86Emitter