mirror of
https://github.com/libretro/ppsspp.git
synced 2024-11-30 20:01:00 +00:00
1922 lines
61 KiB
C++
1922 lines
61 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include <cstring>
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#include "x64Emitter.h"
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#include "ABI.h"
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#include "CPUDetect.h"
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#include "MemoryUtil.h"
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#include "MsgHandler.h"
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#define PRIx64 "llx"
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// Minimize the diff against Dolphin
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#define DYNA_REC JIT
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namespace Gen
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{
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// TODO(ector): Add EAX special casing, for ever so slightly smaller code.
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struct NormalOpDef
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{
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u8 toRm8, toRm32, fromRm8, fromRm32, imm8, imm32, simm8, eaximm8, eaximm32, ext;
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};
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// 0xCC is code for invalid combination of immediates
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static const NormalOpDef normalops[11] =
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{
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{0x00, 0x01, 0x02, 0x03, 0x80, 0x81, 0x83, 0x04, 0x05, 0}, //ADD
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{0x10, 0x11, 0x12, 0x13, 0x80, 0x81, 0x83, 0x14, 0x15, 2}, //ADC
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{0x28, 0x29, 0x2A, 0x2B, 0x80, 0x81, 0x83, 0x2C, 0x2D, 5}, //SUB
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{0x18, 0x19, 0x1A, 0x1B, 0x80, 0x81, 0x83, 0x1C, 0x1D, 3}, //SBB
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{0x20, 0x21, 0x22, 0x23, 0x80, 0x81, 0x83, 0x24, 0x25, 4}, //AND
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{0x08, 0x09, 0x0A, 0x0B, 0x80, 0x81, 0x83, 0x0C, 0x0D, 1}, //OR
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{0x30, 0x31, 0x32, 0x33, 0x80, 0x81, 0x83, 0x34, 0x35, 6}, //XOR
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{0x88, 0x89, 0x8A, 0x8B, 0xC6, 0xC7, 0xCC, 0xCC, 0xCC, 0}, //MOV
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{0x84, 0x85, 0x84, 0x85, 0xF6, 0xF7, 0xCC, 0xA8, 0xA9, 0}, //TEST (to == from)
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{0x38, 0x39, 0x3A, 0x3B, 0x80, 0x81, 0x83, 0x3C, 0x3D, 7}, //CMP
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{0x86, 0x87, 0x86, 0x87, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 7}, //XCHG
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};
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enum NormalSSEOps
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{
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sseCMP = 0xC2,
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sseADD = 0x58, //ADD
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sseSUB = 0x5C, //SUB
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sseAND = 0x54, //AND
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sseANDN = 0x55, //ANDN
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sseOR = 0x56,
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sseXOR = 0x57,
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sseMUL = 0x59, //MUL
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sseDIV = 0x5E, //DIV
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sseMIN = 0x5D, //MIN
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sseMAX = 0x5F, //MAX
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sseCOMIS = 0x2F, //COMIS
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sseUCOMIS = 0x2E, //UCOMIS
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sseSQRT = 0x51, //SQRT
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sseRSQRT = 0x52, //RSQRT (NO DOUBLE PRECISION!!!)
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sseMOVAPfromRM = 0x28, //MOVAP from RM
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sseMOVAPtoRM = 0x29, //MOVAP to RM
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sseMOVUPfromRM = 0x10, //MOVUP from RM
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sseMOVUPtoRM = 0x11, //MOVUP to RM
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sseMOVLPDfromRM= 0x12,
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sseMOVLPDtoRM = 0x13,
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sseMOVHPDfromRM= 0x16,
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sseMOVHPDtoRM = 0x17,
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sseMOVHLPS = 0x12,
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sseMOVLHPS = 0x16,
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sseMOVDQfromRM = 0x6F,
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sseMOVDQtoRM = 0x7F,
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sseMASKMOVDQU = 0xF7,
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sseLDDQU = 0xF0,
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sseSHUF = 0xC6,
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sseMOVNTDQ = 0xE7,
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sseMOVNTP = 0x2B,
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};
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void XEmitter::SetCodePtr(u8 *ptr)
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{
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code = ptr;
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}
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const u8 *XEmitter::GetCodePtr() const
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{
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return code;
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}
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u8 *XEmitter::GetWritableCodePtr()
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{
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return code;
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}
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void XEmitter::ReserveCodeSpace(int bytes)
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{
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for (int i = 0; i < bytes; i++)
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*code++ = 0xCC;
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}
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const u8 *XEmitter::AlignCode4()
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{
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int c = int((u64)code & 3);
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if (c)
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ReserveCodeSpace(4-c);
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return code;
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}
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const u8 *XEmitter::AlignCode16()
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{
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int c = int((u64)code & 15);
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if (c)
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ReserveCodeSpace(16-c);
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return code;
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}
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const u8 *XEmitter::AlignCodePage()
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{
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int c = int((u64)code & 4095);
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if (c)
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ReserveCodeSpace(4096-c);
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return code;
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}
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// This operation modifies flags; check to see the flags are locked.
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// If the flags are locked, we should immediately and loudly fail before
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// causing a subtle JIT bug.
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void XEmitter::CheckFlags()
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{
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_assert_msg_(DYNA_REC, !flags_locked, "Attempt to modify flags while flags locked!");
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}
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void XEmitter::WriteModRM(int mod, int reg, int rm)
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{
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Write8((u8)((mod << 6) | ((reg & 7) << 3) | (rm & 7)));
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}
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void XEmitter::WriteSIB(int scale, int index, int base)
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{
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Write8((u8)((scale << 6) | ((index & 7) << 3) | (base & 7)));
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}
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void OpArg::WriteRex(XEmitter *emit, int opBits, int bits, int customOp) const
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{
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if (customOp == -1) customOp = operandReg;
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#ifdef _M_X64
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u8 op = 0x40;
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// REX.W (whether operation is a 64-bit operation)
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if (opBits == 64) op |= 8;
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// REX.R (whether ModR/M reg field refers to R8-R15.
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if (customOp & 8) op |= 4;
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// REX.X (whether ModR/M SIB index field refers to R8-R15)
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if (indexReg & 8) op |= 2;
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// REX.B (whether ModR/M rm or SIB base or opcode reg field refers to R8-R15)
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if (offsetOrBaseReg & 8) op |= 1;
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// Write REX if wr have REX bits to write, or if the operation accesses
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// SIL, DIL, BPL, or SPL.
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if (op != 0x40 ||
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(scale == SCALE_NONE && bits == 8 && (offsetOrBaseReg & 0x10c) == 4) ||
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(opBits == 8 && (customOp & 0x10c) == 4))
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{
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emit->Write8(op);
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// Check the operation doesn't access AH, BH, CH, or DH.
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_dbg_assert_(DYNA_REC, (offsetOrBaseReg & 0x100) == 0);
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_dbg_assert_(DYNA_REC, (customOp & 0x100) == 0);
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}
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#else
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_dbg_assert_(DYNA_REC, opBits != 64);
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_dbg_assert_(DYNA_REC, (customOp & 8) == 0 || customOp == -1);
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_dbg_assert_(DYNA_REC, (indexReg & 8) == 0);
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_dbg_assert_(DYNA_REC, (offsetOrBaseReg & 8) == 0);
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_dbg_assert_(DYNA_REC, opBits != 8 || (customOp & 0x10c) != 4 || customOp == -1);
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_dbg_assert_(DYNA_REC, scale == SCALE_ATREG || bits != 8 || (offsetOrBaseReg & 0x10c) != 4);
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#endif
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}
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void OpArg::WriteVex(XEmitter* emit, X64Reg regOp1, X64Reg regOp2, int L, int pp, int mmmmm, int W) const
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{
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int R = !(regOp1 & 8);
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int X = !(indexReg & 8);
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int B = !(offsetOrBaseReg & 8);
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int vvvv = (regOp2 == X64Reg::INVALID_REG) ? 0xf : (regOp2 ^ 0xf);
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// do we need any VEX fields that only appear in the three-byte form?
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if (X == 1 && B == 1 && W == 0 && mmmmm == 1)
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{
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u8 RvvvvLpp = (R << 7) | (vvvv << 3) | (L << 1) | pp;
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emit->Write8(0xC5);
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emit->Write8(RvvvvLpp);
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}
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else
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{
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u8 RXBmmmmm = (R << 7) | (X << 6) | (B << 5) | mmmmm;
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u8 WvvvvLpp = (W << 7) | (vvvv << 3) | (L << 1) | pp;
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emit->Write8(0xC4);
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emit->Write8(RXBmmmmm);
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emit->Write8(WvvvvLpp);
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}
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}
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void OpArg::WriteRest(XEmitter *emit, int extraBytes, X64Reg _operandReg,
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bool warn_64bit_offset) const
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{
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if (_operandReg == INVALID_REG)
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_operandReg = (X64Reg)this->operandReg;
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int mod = 0;
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int ireg = indexReg;
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bool SIB = false;
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int _offsetOrBaseReg = this->offsetOrBaseReg;
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if (scale == SCALE_RIP) //Also, on 32-bit, just an immediate address
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{
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// Oh, RIP addressing.
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_offsetOrBaseReg = 5;
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emit->WriteModRM(0, _operandReg, _offsetOrBaseReg);
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//TODO : add some checks
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#ifdef _M_X64
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u64 ripAddr = (u64)emit->GetCodePtr() + 4 + extraBytes;
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s64 distance = (s64)offset - (s64)ripAddr;
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_assert_msg_(DYNA_REC,
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(distance < 0x80000000LL &&
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distance >= -0x80000000LL) ||
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!warn_64bit_offset,
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"WriteRest: op out of range (0x%" PRIx64 " uses 0x%" PRIx64 ")",
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ripAddr, offset);
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s32 offs = (s32)distance;
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emit->Write32((u32)offs);
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#else
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emit->Write32((u32)offset);
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#endif
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return;
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}
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if (scale == 0)
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{
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// Oh, no memory, Just a reg.
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mod = 3; //11
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}
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else if (scale >= 1)
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{
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//Ah good, no scaling.
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if (scale == SCALE_ATREG && !((_offsetOrBaseReg & 7) == 4 || (_offsetOrBaseReg & 7) == 5))
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{
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//Okay, we're good. No SIB necessary.
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int ioff = (int)offset;
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if (ioff == 0)
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{
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mod = 0;
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}
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else if (ioff<-128 || ioff>127)
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{
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mod = 2; //32-bit displacement
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}
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else
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{
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mod = 1; //8-bit displacement
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}
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}
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else if (scale >= SCALE_NOBASE_2 && scale <= SCALE_NOBASE_8)
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{
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SIB = true;
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mod = 0;
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_offsetOrBaseReg = 5;
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}
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else //if (scale != SCALE_ATREG)
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{
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if ((_offsetOrBaseReg & 7) == 4) //this would occupy the SIB encoding :(
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{
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//So we have to fake it with SIB encoding :(
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SIB = true;
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}
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if (scale >= SCALE_1 && scale < SCALE_ATREG)
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{
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SIB = true;
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}
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if (scale == SCALE_ATREG && ((_offsetOrBaseReg & 7) == 4))
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{
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SIB = true;
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ireg = _offsetOrBaseReg;
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}
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//Okay, we're fine. Just disp encoding.
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//We need displacement. Which size?
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int ioff = (int)(s64)offset;
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if (ioff < -128 || ioff > 127)
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{
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mod = 2; //32-bit displacement
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}
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else
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{
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mod = 1; //8-bit displacement
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}
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}
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}
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// Okay. Time to do the actual writing
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// ModRM byte:
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int oreg = _offsetOrBaseReg;
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if (SIB)
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oreg = 4;
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// TODO(ector): WTF is this if about? I don't remember writing it :-)
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//if (RIP)
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// oreg = 5;
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emit->WriteModRM(mod, _operandReg&7, oreg&7);
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if (SIB)
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{
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//SIB byte
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int ss;
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switch (scale)
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{
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case SCALE_NONE: _offsetOrBaseReg = 4; ss = 0; break; //RSP
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case SCALE_1: ss = 0; break;
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case SCALE_2: ss = 1; break;
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case SCALE_4: ss = 2; break;
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case SCALE_8: ss = 3; break;
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case SCALE_NOBASE_2: ss = 1; break;
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case SCALE_NOBASE_4: ss = 2; break;
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case SCALE_NOBASE_8: ss = 3; break;
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case SCALE_ATREG: ss = 0; break;
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default: _assert_msg_(DYNA_REC, 0, "Invalid scale for SIB byte"); ss = 0; break;
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}
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emit->Write8((u8)((ss << 6) | ((ireg&7)<<3) | (_offsetOrBaseReg&7)));
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}
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if (mod == 1) //8-bit disp
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{
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emit->Write8((u8)(s8)(s32)offset);
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}
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else if (mod == 2 || (scale >= SCALE_NOBASE_2 && scale <= SCALE_NOBASE_8)) //32-bit disp
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{
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emit->Write32((u32)offset);
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}
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}
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// W = operand extended width (1 if 64-bit)
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// R = register# upper bit
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// X = scale amnt upper bit
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// B = base register# upper bit
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void XEmitter::Rex(int w, int r, int x, int b)
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{
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w = w ? 1 : 0;
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r = r ? 1 : 0;
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x = x ? 1 : 0;
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b = b ? 1 : 0;
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u8 rx = (u8)(0x40 | (w << 3) | (r << 2) | (x << 1) | (b));
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if (rx != 0x40)
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Write8(rx);
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}
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void XEmitter::JMP(const u8 *addr, bool force5Bytes)
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{
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u64 fn = (u64)addr;
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if (!force5Bytes)
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{
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s64 distance = (s64)(fn - ((u64)code + 2));
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_assert_msg_(DYNA_REC, distance >= -0x80 && distance < 0x80,
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"Jump target too far away, needs force5Bytes = true");
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//8 bits will do
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Write8(0xEB);
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Write8((u8)(s8)distance);
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}
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else
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{
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s64 distance = (s64)(fn - ((u64)code + 5));
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_assert_msg_(DYNA_REC,
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distance >= -0x80000000LL && distance < 0x80000000LL,
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"Jump target too far away, needs indirect register");
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Write8(0xE9);
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Write32((u32)(s32)distance);
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}
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}
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void XEmitter::JMPptr(const OpArg &arg2)
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{
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OpArg arg = arg2;
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if (arg.IsImm()) _assert_msg_(DYNA_REC, 0, "JMPptr - Imm argument");
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arg.operandReg = 4;
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arg.WriteRex(this, 0, 0);
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Write8(0xFF);
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arg.WriteRest(this);
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}
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//Can be used to trap other processors, before overwriting their code
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// not used in dolphin
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void XEmitter::JMPself()
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{
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Write8(0xEB);
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Write8(0xFE);
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}
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void XEmitter::CALLptr(OpArg arg)
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{
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if (arg.IsImm()) _assert_msg_(DYNA_REC, 0, "CALLptr - Imm argument");
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arg.operandReg = 2;
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arg.WriteRex(this, 0, 0);
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Write8(0xFF);
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arg.WriteRest(this);
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}
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void XEmitter::CALL(const void *fnptr)
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{
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u64 distance = u64(fnptr) - (u64(code) + 5);
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_assert_msg_(DYNA_REC,
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distance < 0x0000000080000000ULL ||
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distance >= 0xFFFFFFFF80000000ULL,
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"CALL out of range (%p calls %p)", code, fnptr);
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Write8(0xE8);
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Write32(u32(distance));
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}
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FixupBranch XEmitter::J(bool force5bytes)
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{
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FixupBranch branch;
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branch.type = force5bytes ? 1 : 0;
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branch.ptr = code + (force5bytes ? 5 : 2);
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if (!force5bytes)
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{
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//8 bits will do
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Write8(0xEB);
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Write8(0);
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}
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else
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{
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Write8(0xE9);
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Write32(0);
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}
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return branch;
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}
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FixupBranch XEmitter::J_CC(CCFlags conditionCode, bool force5bytes)
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{
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FixupBranch branch;
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branch.type = force5bytes ? 1 : 0;
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branch.ptr = code + (force5bytes ? 6 : 2);
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if (!force5bytes)
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{
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//8 bits will do
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Write8(0x70 + conditionCode);
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Write8(0);
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}
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else
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{
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Write8(0x0F);
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Write8(0x80 + conditionCode);
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Write32(0);
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}
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return branch;
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}
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void XEmitter::J_CC(CCFlags conditionCode, const u8* addr, bool force5bytes)
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{
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u64 fn = (u64)addr;
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s64 distance = (s64)(fn - ((u64)code + 2));
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if (distance < -0x80 || distance >= 0x80 || force5bytes)
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{
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distance = (s64)(fn - ((u64)code + 6));
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_assert_msg_(DYNA_REC,
|
|
distance >= -0x80000000LL && distance < 0x80000000LL,
|
|
"Jump target too far away, needs indirect register");
|
|
Write8(0x0F);
|
|
Write8(0x80 + conditionCode);
|
|
Write32((u32)(s32)distance);
|
|
}
|
|
else
|
|
{
|
|
Write8(0x70 + conditionCode);
|
|
Write8((u8)(s8)distance);
|
|
}
|
|
}
|
|
|
|
void XEmitter::SetJumpTarget(const FixupBranch &branch)
|
|
{
|
|
if (branch.type == 0)
|
|
{
|
|
s64 distance = (s64)(code - branch.ptr);
|
|
_assert_msg_(DYNA_REC, distance >= -0x80 && distance < 0x80, "Jump target too far away, needs force5Bytes = true");
|
|
branch.ptr[-1] = (u8)(s8)distance;
|
|
}
|
|
else if (branch.type == 1)
|
|
{
|
|
s64 distance = (s64)(code - branch.ptr);
|
|
_assert_msg_(DYNA_REC, distance >= -0x80000000LL && distance < 0x80000000LL, "Jump target too far away, needs indirect register");
|
|
((s32*)branch.ptr)[-1] = (s32)distance;
|
|
}
|
|
}
|
|
|
|
// INC/DEC considered harmful on newer CPUs due to partial flag set.
|
|
// Use ADD, SUB instead.
|
|
|
|
/*
|
|
void XEmitter::INC(int bits, OpArg arg)
|
|
{
|
|
if (arg.IsImm()) _assert_msg_(DYNA_REC, 0, "INC - Imm argument");
|
|
arg.operandReg = 0;
|
|
if (bits == 16) {Write8(0x66);}
|
|
arg.WriteRex(this, bits, bits);
|
|
Write8(bits == 8 ? 0xFE : 0xFF);
|
|
arg.WriteRest(this);
|
|
}
|
|
void XEmitter::DEC(int bits, OpArg arg)
|
|
{
|
|
if (arg.IsImm()) _assert_msg_(DYNA_REC, 0, "DEC - Imm argument");
|
|
arg.operandReg = 1;
|
|
if (bits == 16) {Write8(0x66);}
|
|
arg.WriteRex(this, bits, bits);
|
|
Write8(bits == 8 ? 0xFE : 0xFF);
|
|
arg.WriteRest(this);
|
|
}
|
|
*/
|
|
|
|
//Single byte opcodes
|
|
//There is no PUSHAD/POPAD in 64-bit mode.
|
|
void XEmitter::INT3() {Write8(0xCC);}
|
|
void XEmitter::RET() {Write8(0xC3);}
|
|
void XEmitter::RET_FAST() {Write8(0xF3); Write8(0xC3);} //two-byte return (rep ret) - recommended by AMD optimization manual for the case of jumping to a ret
|
|
|
|
// The first sign of decadence: optimized NOPs.
|
|
void XEmitter::NOP(size_t size)
|
|
{
|
|
_dbg_assert_(DYNA_REC, (int)size > 0);
|
|
while (true)
|
|
{
|
|
switch (size)
|
|
{
|
|
case 0:
|
|
return;
|
|
case 1:
|
|
Write8(0x90);
|
|
return;
|
|
case 2:
|
|
Write8(0x66); Write8(0x90);
|
|
return;
|
|
case 3:
|
|
Write8(0x0F); Write8(0x1F); Write8(0x00);
|
|
return;
|
|
case 4:
|
|
Write8(0x0F); Write8(0x1F); Write8(0x40); Write8(0x00);
|
|
return;
|
|
case 5:
|
|
Write8(0x0F); Write8(0x1F); Write8(0x44); Write8(0x00);
|
|
Write8(0x00);
|
|
return;
|
|
case 6:
|
|
Write8(0x66); Write8(0x0F); Write8(0x1F); Write8(0x44);
|
|
Write8(0x00); Write8(0x00);
|
|
return;
|
|
case 7:
|
|
Write8(0x0F); Write8(0x1F); Write8(0x80); Write8(0x00);
|
|
Write8(0x00); Write8(0x00); Write8(0x00);
|
|
return;
|
|
case 8:
|
|
Write8(0x0F); Write8(0x1F); Write8(0x84); Write8(0x00);
|
|
Write8(0x00); Write8(0x00); Write8(0x00); Write8(0x00);
|
|
return;
|
|
case 9:
|
|
Write8(0x66); Write8(0x0F); Write8(0x1F); Write8(0x84);
|
|
Write8(0x00); Write8(0x00); Write8(0x00); Write8(0x00);
|
|
Write8(0x00);
|
|
return;
|
|
case 10:
|
|
Write8(0x66); Write8(0x66); Write8(0x0F); Write8(0x1F);
|
|
Write8(0x84); Write8(0x00); Write8(0x00); Write8(0x00);
|
|
Write8(0x00); Write8(0x00);
|
|
return;
|
|
default:
|
|
// Even though x86 instructions are allowed to be up to 15 bytes long,
|
|
// AMD advises against using NOPs longer than 11 bytes because they
|
|
// carry a performance penalty on CPUs older than AMD family 16h.
|
|
Write8(0x66); Write8(0x66); Write8(0x66); Write8(0x0F);
|
|
Write8(0x1F); Write8(0x84); Write8(0x00); Write8(0x00);
|
|
Write8(0x00); Write8(0x00); Write8(0x00);
|
|
size -= 11;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
void XEmitter::PAUSE() {Write8(0xF3); NOP();} //use in tight spinloops for energy saving on some cpu
|
|
void XEmitter::CLC() {CheckFlags(); Write8(0xF8);} //clear carry
|
|
void XEmitter::CMC() {CheckFlags(); Write8(0xF5);} //flip carry
|
|
void XEmitter::STC() {CheckFlags(); Write8(0xF9);} //set carry
|
|
|
|
//TODO: xchg ah, al ???
|
|
void XEmitter::XCHG_AHAL()
|
|
{
|
|
Write8(0x86);
|
|
Write8(0xe0);
|
|
// alt. 86 c4
|
|
}
|
|
|
|
//These two can not be executed on early Intel 64-bit CPU:s, only on AMD!
|
|
void XEmitter::LAHF() {Write8(0x9F);}
|
|
void XEmitter::SAHF() {CheckFlags(); Write8(0x9E);}
|
|
|
|
void XEmitter::PUSHF() {Write8(0x9C);}
|
|
void XEmitter::POPF() {CheckFlags(); Write8(0x9D);}
|
|
|
|
void XEmitter::LFENCE() {Write8(0x0F); Write8(0xAE); Write8(0xE8);}
|
|
void XEmitter::MFENCE() {Write8(0x0F); Write8(0xAE); Write8(0xF0);}
|
|
void XEmitter::SFENCE() {Write8(0x0F); Write8(0xAE); Write8(0xF8);}
|
|
|
|
void XEmitter::WriteSimple1Byte(int bits, u8 byte, X64Reg reg)
|
|
{
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
Rex(bits == 64, 0, 0, (int)reg >> 3);
|
|
Write8(byte + ((int)reg & 7));
|
|
}
|
|
|
|
void XEmitter::WriteSimple2Byte(int bits, u8 byte1, u8 byte2, X64Reg reg)
|
|
{
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
Rex(bits==64, 0, 0, (int)reg >> 3);
|
|
Write8(byte1);
|
|
Write8(byte2 + ((int)reg & 7));
|
|
}
|
|
|
|
void XEmitter::CWD(int bits)
|
|
{
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
Rex(bits == 64, 0, 0, 0);
|
|
Write8(0x99);
|
|
}
|
|
|
|
void XEmitter::CBW(int bits)
|
|
{
|
|
if (bits == 8)
|
|
Write8(0x66);
|
|
Rex(bits == 32, 0, 0, 0);
|
|
Write8(0x98);
|
|
}
|
|
|
|
//Simple opcodes
|
|
|
|
|
|
//push/pop do not need wide to be 64-bit
|
|
void XEmitter::PUSH(X64Reg reg) {WriteSimple1Byte(32, 0x50, reg);}
|
|
void XEmitter::POP(X64Reg reg) {WriteSimple1Byte(32, 0x58, reg);}
|
|
|
|
void XEmitter::PUSH(int bits, const OpArg ®)
|
|
{
|
|
if (reg.IsSimpleReg())
|
|
PUSH(reg.GetSimpleReg());
|
|
else if (reg.IsImm())
|
|
{
|
|
switch (reg.GetImmBits())
|
|
{
|
|
case 8:
|
|
Write8(0x6A);
|
|
Write8((u8)(s8)reg.offset);
|
|
break;
|
|
case 16:
|
|
Write8(0x66);
|
|
Write8(0x68);
|
|
Write16((u16)(s16)(s32)reg.offset);
|
|
break;
|
|
case 32:
|
|
Write8(0x68);
|
|
Write32((u32)reg.offset);
|
|
break;
|
|
default:
|
|
_assert_msg_(DYNA_REC, 0, "PUSH - Bad imm bits");
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
reg.WriteRex(this, bits, bits);
|
|
Write8(0xFF);
|
|
reg.WriteRest(this, 0, (X64Reg)6);
|
|
}
|
|
}
|
|
|
|
void XEmitter::POP(int /*bits*/, const OpArg ®)
|
|
{
|
|
if (reg.IsSimpleReg())
|
|
POP(reg.GetSimpleReg());
|
|
else
|
|
_assert_msg_(DYNA_REC, 0, "POP - Unsupported encoding");
|
|
}
|
|
|
|
void XEmitter::BSWAP(int bits, X64Reg reg)
|
|
{
|
|
if (bits >= 32)
|
|
{
|
|
WriteSimple2Byte(bits, 0x0F, 0xC8, reg);
|
|
}
|
|
else if (bits == 16)
|
|
{
|
|
ROL(16, R(reg), Imm8(8));
|
|
}
|
|
else if (bits == 8)
|
|
{
|
|
// Do nothing - can't bswap a single byte...
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "BSWAP - Wrong number of bits");
|
|
}
|
|
}
|
|
|
|
// Undefined opcode - reserved
|
|
// If we ever need a way to always cause a non-breakpoint hard exception...
|
|
void XEmitter::UD2()
|
|
{
|
|
Write8(0x0F);
|
|
Write8(0x0B);
|
|
}
|
|
|
|
void XEmitter::PREFETCH(PrefetchLevel level, OpArg arg)
|
|
{
|
|
_assert_msg_(DYNA_REC, !arg.IsImm(), "PREFETCH - Imm argument");
|
|
arg.operandReg = (u8)level;
|
|
arg.WriteRex(this, 0, 0);
|
|
Write8(0x0F);
|
|
Write8(0x18);
|
|
arg.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::SETcc(CCFlags flag, OpArg dest)
|
|
{
|
|
_assert_msg_(DYNA_REC, !dest.IsImm(), "SETcc - Imm argument");
|
|
dest.operandReg = 0;
|
|
dest.WriteRex(this, 0, 8);
|
|
Write8(0x0F);
|
|
Write8(0x90 + (u8)flag);
|
|
dest.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::CMOVcc(int bits, X64Reg dest, OpArg src, CCFlags flag)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "CMOVcc - Imm argument");
|
|
_assert_msg_(DYNA_REC, bits != 8, "CMOVcc - 8 bits unsupported");
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
src.operandReg = dest;
|
|
src.WriteRex(this, bits, bits);
|
|
Write8(0x0F);
|
|
Write8(0x40 + (u8)flag);
|
|
src.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::WriteMulDivType(int bits, OpArg src, int ext)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "WriteMulDivType - Imm argument");
|
|
CheckFlags();
|
|
src.operandReg = ext;
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
src.WriteRex(this, bits, bits, 0);
|
|
if (bits == 8)
|
|
{
|
|
Write8(0xF6);
|
|
}
|
|
else
|
|
{
|
|
Write8(0xF7);
|
|
}
|
|
src.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::MUL(int bits, OpArg src) {WriteMulDivType(bits, src, 4);}
|
|
void XEmitter::DIV(int bits, OpArg src) {WriteMulDivType(bits, src, 6);}
|
|
void XEmitter::IMUL(int bits, OpArg src) {WriteMulDivType(bits, src, 5);}
|
|
void XEmitter::IDIV(int bits, OpArg src) {WriteMulDivType(bits, src, 7);}
|
|
void XEmitter::NEG(int bits, OpArg src) {WriteMulDivType(bits, src, 3);}
|
|
void XEmitter::NOT(int bits, OpArg src) {WriteMulDivType(bits, src, 2);}
|
|
|
|
void XEmitter::WriteBitSearchType(int bits, X64Reg dest, OpArg src, u8 byte2, bool rep)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "WriteBitSearchType - Imm argument");
|
|
CheckFlags();
|
|
src.operandReg = (u8)dest;
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
if (rep)
|
|
Write8(0xF3);
|
|
src.WriteRex(this, bits, bits);
|
|
Write8(0x0F);
|
|
Write8(byte2);
|
|
src.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::MOVNTI(int bits, OpArg dest, X64Reg src)
|
|
{
|
|
if (bits <= 16)
|
|
_assert_msg_(DYNA_REC, 0, "MOVNTI - bits<=16");
|
|
WriteBitSearchType(bits, src, dest, 0xC3);
|
|
}
|
|
|
|
void XEmitter::BSF(int bits, X64Reg dest, OpArg src) {WriteBitSearchType(bits,dest,src,0xBC);} //bottom bit to top bit
|
|
void XEmitter::BSR(int bits, X64Reg dest, OpArg src) {WriteBitSearchType(bits,dest,src,0xBD);} //top bit to bottom bit
|
|
|
|
void XEmitter::TZCNT(int bits, X64Reg dest, OpArg src)
|
|
{
|
|
CheckFlags();
|
|
if (!cpu_info.bBMI1)
|
|
PanicAlert("Trying to use BMI1 on a system that doesn't support it. Bad programmer.");
|
|
WriteBitSearchType(bits, dest, src, 0xBC, true);
|
|
}
|
|
void XEmitter::LZCNT(int bits, X64Reg dest, OpArg src)
|
|
{
|
|
CheckFlags();
|
|
if (!cpu_info.bLZCNT)
|
|
PanicAlert("Trying to use LZCNT on a system that doesn't support it. Bad programmer.");
|
|
WriteBitSearchType(bits, dest, src, 0xBD, true);
|
|
}
|
|
|
|
void XEmitter::MOVSX(int dbits, int sbits, X64Reg dest, OpArg src)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "MOVSX - Imm argument");
|
|
if (dbits == sbits)
|
|
{
|
|
MOV(dbits, R(dest), src);
|
|
return;
|
|
}
|
|
src.operandReg = (u8)dest;
|
|
if (dbits == 16)
|
|
Write8(0x66);
|
|
src.WriteRex(this, dbits, sbits);
|
|
if (sbits == 8)
|
|
{
|
|
Write8(0x0F);
|
|
Write8(0xBE);
|
|
}
|
|
else if (sbits == 16)
|
|
{
|
|
Write8(0x0F);
|
|
Write8(0xBF);
|
|
}
|
|
else if (sbits == 32 && dbits == 64)
|
|
{
|
|
Write8(0x63);
|
|
}
|
|
else
|
|
{
|
|
Crash();
|
|
}
|
|
src.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::MOVZX(int dbits, int sbits, X64Reg dest, OpArg src)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "MOVZX - Imm argument");
|
|
if (dbits == sbits)
|
|
{
|
|
MOV(dbits, R(dest), src);
|
|
return;
|
|
}
|
|
src.operandReg = (u8)dest;
|
|
if (dbits == 16)
|
|
Write8(0x66);
|
|
//the 32bit result is automatically zero extended to 64bit
|
|
src.WriteRex(this, dbits == 64 ? 32 : dbits, sbits);
|
|
if (sbits == 8)
|
|
{
|
|
Write8(0x0F);
|
|
Write8(0xB6);
|
|
}
|
|
else if (sbits == 16)
|
|
{
|
|
Write8(0x0F);
|
|
Write8(0xB7);
|
|
}
|
|
else if (sbits == 32 && dbits == 64)
|
|
{
|
|
Write8(0x8B);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "MOVZX - Invalid size");
|
|
}
|
|
src.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::MOVBE(int bits, const OpArg& dest, const OpArg& src)
|
|
{
|
|
_assert_msg_(DYNA_REC, cpu_info.bMOVBE, "Generating MOVBE on a system that does not support it.");
|
|
if (bits == 8)
|
|
{
|
|
MOV(bits, dest, src);
|
|
return;
|
|
}
|
|
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
|
|
if (dest.IsSimpleReg())
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsSimpleReg() && !src.IsImm(), "MOVBE: Loading from !mem");
|
|
src.WriteRex(this, bits, bits, dest.GetSimpleReg());
|
|
Write8(0x0F); Write8(0x38); Write8(0xF0);
|
|
src.WriteRest(this, 0, dest.GetSimpleReg());
|
|
}
|
|
else if (src.IsSimpleReg())
|
|
{
|
|
_assert_msg_(DYNA_REC, !dest.IsSimpleReg() && !dest.IsImm(), "MOVBE: Storing to !mem");
|
|
dest.WriteRex(this, bits, bits, src.GetSimpleReg());
|
|
Write8(0x0F); Write8(0x38); Write8(0xF1);
|
|
dest.WriteRest(this, 0, src.GetSimpleReg());
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "MOVBE: Not loading or storing to mem");
|
|
}
|
|
}
|
|
|
|
|
|
void XEmitter::LEA(int bits, X64Reg dest, OpArg src)
|
|
{
|
|
_assert_msg_(DYNA_REC, !src.IsImm(), "LEA - Imm argument");
|
|
src.operandReg = (u8)dest;
|
|
if (bits == 16)
|
|
Write8(0x66); //TODO: performance warning
|
|
src.WriteRex(this, bits, bits);
|
|
Write8(0x8D);
|
|
src.WriteRest(this, 0, INVALID_REG, bits == 64);
|
|
}
|
|
|
|
//shift can be either imm8 or cl
|
|
void XEmitter::WriteShift(int bits, OpArg dest, OpArg &shift, int ext)
|
|
{
|
|
CheckFlags();
|
|
bool writeImm = false;
|
|
if (dest.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteShift - can't shift imms");
|
|
}
|
|
if ((shift.IsSimpleReg() && shift.GetSimpleReg() != ECX) || (shift.IsImm() && shift.GetImmBits() != 8))
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteShift - illegal argument");
|
|
}
|
|
dest.operandReg = ext;
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
dest.WriteRex(this, bits, bits, 0);
|
|
if (shift.GetImmBits() == 8)
|
|
{
|
|
//ok an imm
|
|
u8 imm = (u8)shift.offset;
|
|
if (imm == 1)
|
|
{
|
|
Write8(bits == 8 ? 0xD0 : 0xD1);
|
|
}
|
|
else
|
|
{
|
|
writeImm = true;
|
|
Write8(bits == 8 ? 0xC0 : 0xC1);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Write8(bits == 8 ? 0xD2 : 0xD3);
|
|
}
|
|
dest.WriteRest(this, writeImm ? 1 : 0);
|
|
if (writeImm)
|
|
Write8((u8)shift.offset);
|
|
}
|
|
|
|
// large rotates and shift are slower on intel than amd
|
|
// intel likes to rotate by 1, and the op is smaller too
|
|
void XEmitter::ROL(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 0);}
|
|
void XEmitter::ROR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 1);}
|
|
void XEmitter::RCL(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 2);}
|
|
void XEmitter::RCR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 3);}
|
|
void XEmitter::SHL(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 4);}
|
|
void XEmitter::SHR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 5);}
|
|
void XEmitter::SAR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 7);}
|
|
|
|
// index can be either imm8 or register, don't use memory destination because it's slow
|
|
void XEmitter::WriteBitTest(int bits, OpArg &dest, OpArg &index, int ext)
|
|
{
|
|
CheckFlags();
|
|
if (dest.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteBitTest - can't test imms");
|
|
}
|
|
if ((index.IsImm() && index.GetImmBits() != 8))
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteBitTest - illegal argument");
|
|
}
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
if (index.IsImm())
|
|
{
|
|
dest.WriteRex(this, bits, bits);
|
|
Write8(0x0F); Write8(0xBA);
|
|
dest.WriteRest(this, 1, (X64Reg)ext);
|
|
Write8((u8)index.offset);
|
|
}
|
|
else
|
|
{
|
|
X64Reg operand = index.GetSimpleReg();
|
|
dest.WriteRex(this, bits, bits, operand);
|
|
Write8(0x0F); Write8(0x83 + 8*ext);
|
|
dest.WriteRest(this, 1, operand);
|
|
}
|
|
}
|
|
|
|
void XEmitter::BT(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 4);}
|
|
void XEmitter::BTS(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 5);}
|
|
void XEmitter::BTR(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 6);}
|
|
void XEmitter::BTC(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 7);}
|
|
|
|
//shift can be either imm8 or cl
|
|
void XEmitter::SHRD(int bits, OpArg dest, OpArg src, OpArg shift)
|
|
{
|
|
CheckFlags();
|
|
if (dest.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHRD - can't use imms as destination");
|
|
}
|
|
if (!src.IsSimpleReg())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHRD - must use simple register as source");
|
|
}
|
|
if ((shift.IsSimpleReg() && shift.GetSimpleReg() != ECX) || (shift.IsImm() && shift.GetImmBits() != 8))
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHRD - illegal shift");
|
|
}
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
X64Reg operand = src.GetSimpleReg();
|
|
dest.WriteRex(this, bits, bits, operand);
|
|
if (shift.GetImmBits() == 8)
|
|
{
|
|
Write8(0x0F); Write8(0xAC);
|
|
dest.WriteRest(this, 1, operand);
|
|
Write8((u8)shift.offset);
|
|
}
|
|
else
|
|
{
|
|
Write8(0x0F); Write8(0xAD);
|
|
dest.WriteRest(this, 0, operand);
|
|
}
|
|
}
|
|
|
|
void XEmitter::SHLD(int bits, OpArg dest, OpArg src, OpArg shift)
|
|
{
|
|
CheckFlags();
|
|
if (dest.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHLD - can't use imms as destination");
|
|
}
|
|
if (!src.IsSimpleReg())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHLD - must use simple register as source");
|
|
}
|
|
if ((shift.IsSimpleReg() && shift.GetSimpleReg() != ECX) || (shift.IsImm() && shift.GetImmBits() != 8))
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "SHLD - illegal shift");
|
|
}
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
X64Reg operand = src.GetSimpleReg();
|
|
dest.WriteRex(this, bits, bits, operand);
|
|
if (shift.GetImmBits() == 8)
|
|
{
|
|
Write8(0x0F); Write8(0xA4);
|
|
dest.WriteRest(this, 1, operand);
|
|
Write8((u8)shift.offset);
|
|
}
|
|
else
|
|
{
|
|
Write8(0x0F); Write8(0xA5);
|
|
dest.WriteRest(this, 0, operand);
|
|
}
|
|
}
|
|
|
|
void OpArg::WriteSingleByteOp(XEmitter *emit, u8 op, X64Reg _operandReg, int bits)
|
|
{
|
|
if (bits == 16)
|
|
emit->Write8(0x66);
|
|
|
|
this->operandReg = (u8)_operandReg;
|
|
WriteRex(emit, bits, bits);
|
|
emit->Write8(op);
|
|
WriteRest(emit);
|
|
}
|
|
|
|
//operand can either be immediate or register
|
|
void OpArg::WriteNormalOp(XEmitter *emit, bool toRM, NormalOp op, const OpArg &operand, int bits) const
|
|
{
|
|
X64Reg _operandReg;
|
|
if (IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - Imm argument, wrong order");
|
|
}
|
|
|
|
if (bits == 16)
|
|
emit->Write8(0x66);
|
|
|
|
int immToWrite = 0;
|
|
|
|
if (operand.IsImm())
|
|
{
|
|
WriteRex(emit, bits, bits);
|
|
|
|
if (!toRM)
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - Writing to Imm (!toRM)");
|
|
}
|
|
|
|
if (operand.scale == SCALE_IMM8 && bits == 8)
|
|
{
|
|
// op al, imm8
|
|
if (!scale && offsetOrBaseReg == AL && normalops[op].eaximm8 != 0xCC)
|
|
{
|
|
emit->Write8(normalops[op].eaximm8);
|
|
emit->Write8((u8)operand.offset);
|
|
return;
|
|
}
|
|
// mov reg, imm8
|
|
if (!scale && op == nrmMOV)
|
|
{
|
|
emit->Write8(0xB0 + (offsetOrBaseReg & 7));
|
|
emit->Write8((u8)operand.offset);
|
|
return;
|
|
}
|
|
// op r/m8, imm8
|
|
emit->Write8(normalops[op].imm8);
|
|
immToWrite = 8;
|
|
}
|
|
else if ((operand.scale == SCALE_IMM16 && bits == 16) ||
|
|
(operand.scale == SCALE_IMM32 && bits == 32) ||
|
|
(operand.scale == SCALE_IMM32 && bits == 64))
|
|
{
|
|
// Try to save immediate size if we can, but first check to see
|
|
// if the instruction supports simm8.
|
|
// op r/m, imm8
|
|
if (normalops[op].simm8 != 0xCC &&
|
|
((operand.scale == SCALE_IMM16 && (s16)operand.offset == (s8)operand.offset) ||
|
|
(operand.scale == SCALE_IMM32 && (s32)operand.offset == (s8)operand.offset)))
|
|
{
|
|
emit->Write8(normalops[op].simm8);
|
|
immToWrite = 8;
|
|
}
|
|
else
|
|
{
|
|
// mov reg, imm
|
|
if (!scale && op == nrmMOV && bits != 64)
|
|
{
|
|
emit->Write8(0xB8 + (offsetOrBaseReg & 7));
|
|
if (bits == 16)
|
|
emit->Write16((u16)operand.offset);
|
|
else
|
|
emit->Write32((u32)operand.offset);
|
|
return;
|
|
}
|
|
// op eax, imm
|
|
if (!scale && offsetOrBaseReg == EAX && normalops[op].eaximm32 != 0xCC)
|
|
{
|
|
emit->Write8(normalops[op].eaximm32);
|
|
if (bits == 16)
|
|
emit->Write16((u16)operand.offset);
|
|
else
|
|
emit->Write32((u32)operand.offset);
|
|
return;
|
|
}
|
|
// op r/m, imm
|
|
emit->Write8(normalops[op].imm32);
|
|
immToWrite = bits == 16 ? 16 : 32;
|
|
}
|
|
}
|
|
else if ((operand.scale == SCALE_IMM8 && bits == 16) ||
|
|
(operand.scale == SCALE_IMM8 && bits == 32) ||
|
|
(operand.scale == SCALE_IMM8 && bits == 64))
|
|
{
|
|
// op r/m, imm8
|
|
emit->Write8(normalops[op].simm8);
|
|
immToWrite = 8;
|
|
}
|
|
else if (operand.scale == SCALE_IMM64 && bits == 64)
|
|
{
|
|
if (scale)
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - MOV with 64-bit imm requres register destination");
|
|
}
|
|
// mov reg64, imm64
|
|
else if (op == nrmMOV)
|
|
{
|
|
emit->Write8(0xB8 + (offsetOrBaseReg & 7));
|
|
emit->Write64((u64)operand.offset);
|
|
return;
|
|
}
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - Only MOV can take 64-bit imm");
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - Unhandled case");
|
|
}
|
|
_operandReg = (X64Reg)normalops[op].ext; //pass extension in REG of ModRM
|
|
}
|
|
else
|
|
{
|
|
_operandReg = (X64Reg)operand.offsetOrBaseReg;
|
|
WriteRex(emit, bits, bits, _operandReg);
|
|
// op r/m, reg
|
|
if (toRM)
|
|
{
|
|
emit->Write8(bits == 8 ? normalops[op].toRm8 : normalops[op].toRm32);
|
|
}
|
|
// op reg, r/m
|
|
else
|
|
{
|
|
emit->Write8(bits == 8 ? normalops[op].fromRm8 : normalops[op].fromRm32);
|
|
}
|
|
}
|
|
WriteRest(emit, immToWrite >> 3, _operandReg);
|
|
switch (immToWrite)
|
|
{
|
|
case 0:
|
|
break;
|
|
case 8:
|
|
emit->Write8((u8)operand.offset);
|
|
break;
|
|
case 16:
|
|
emit->Write16((u16)operand.offset);
|
|
break;
|
|
case 32:
|
|
emit->Write32((u32)operand.offset);
|
|
break;
|
|
default:
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - Unhandled case");
|
|
}
|
|
}
|
|
|
|
void XEmitter::WriteNormalOp(XEmitter *emit, int bits, NormalOp op, const OpArg &a1, const OpArg &a2)
|
|
{
|
|
if (a1.IsImm())
|
|
{
|
|
//Booh! Can't write to an imm
|
|
_assert_msg_(DYNA_REC, 0, "WriteNormalOp - a1 cannot be imm");
|
|
return;
|
|
}
|
|
if (a2.IsImm())
|
|
{
|
|
a1.WriteNormalOp(emit, true, op, a2, bits);
|
|
}
|
|
else
|
|
{
|
|
if (a1.IsSimpleReg())
|
|
{
|
|
a2.WriteNormalOp(emit, false, op, a1, bits);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, a2.IsSimpleReg() || a2.IsImm(), "WriteNormalOp - a1 and a2 cannot both be memory");
|
|
a1.WriteNormalOp(emit, true, op, a2, bits);
|
|
}
|
|
}
|
|
}
|
|
|
|
void XEmitter::ADD (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmADD, a1, a2);}
|
|
void XEmitter::ADC (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmADC, a1, a2);}
|
|
void XEmitter::SUB (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmSUB, a1, a2);}
|
|
void XEmitter::SBB (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmSBB, a1, a2);}
|
|
void XEmitter::AND (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmAND, a1, a2);}
|
|
void XEmitter::OR (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmOR , a1, a2);}
|
|
void XEmitter::XOR (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmXOR, a1, a2);}
|
|
void XEmitter::MOV (int bits, const OpArg &a1, const OpArg &a2)
|
|
{
|
|
if (a1.IsSimpleReg() && a2.IsSimpleReg() && a1.GetSimpleReg() == a2.GetSimpleReg())
|
|
ERROR_LOG(DYNA_REC, "Redundant MOV @ %p - bug in JIT?", code);
|
|
WriteNormalOp(this, bits, nrmMOV, a1, a2);
|
|
}
|
|
void XEmitter::TEST(int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmTEST, a1, a2);}
|
|
void XEmitter::CMP (int bits, const OpArg &a1, const OpArg &a2) {CheckFlags(); WriteNormalOp(this, bits, nrmCMP, a1, a2);}
|
|
void XEmitter::XCHG(int bits, const OpArg &a1, const OpArg &a2) {WriteNormalOp(this, bits, nrmXCHG, a1, a2);}
|
|
|
|
void XEmitter::IMUL(int bits, X64Reg regOp, OpArg a1, OpArg a2)
|
|
{
|
|
CheckFlags();
|
|
if (bits == 8)
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "IMUL - illegal bit size!");
|
|
return;
|
|
}
|
|
|
|
if (a1.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "IMUL - second arg cannot be imm!");
|
|
return;
|
|
}
|
|
|
|
if (!a2.IsImm())
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "IMUL - third arg must be imm!");
|
|
return;
|
|
}
|
|
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
a1.WriteRex(this, bits, bits, regOp);
|
|
|
|
if (a2.GetImmBits() == 8 ||
|
|
(a2.GetImmBits() == 16 && (s8)a2.offset == (s16)a2.offset) ||
|
|
(a2.GetImmBits() == 32 && (s8)a2.offset == (s32)a2.offset))
|
|
{
|
|
Write8(0x6B);
|
|
a1.WriteRest(this, 1, regOp);
|
|
Write8((u8)a2.offset);
|
|
}
|
|
else
|
|
{
|
|
Write8(0x69);
|
|
if (a2.GetImmBits() == 16 && bits == 16)
|
|
{
|
|
a1.WriteRest(this, 2, regOp);
|
|
Write16((u16)a2.offset);
|
|
}
|
|
else if (a2.GetImmBits() == 32 && (bits == 32 || bits == 64))
|
|
{
|
|
a1.WriteRest(this, 4, regOp);
|
|
Write32((u32)a2.offset);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "IMUL - unhandled case!");
|
|
}
|
|
}
|
|
}
|
|
|
|
void XEmitter::IMUL(int bits, X64Reg regOp, OpArg a)
|
|
{
|
|
CheckFlags();
|
|
if (bits == 8)
|
|
{
|
|
_assert_msg_(DYNA_REC, 0, "IMUL - illegal bit size!");
|
|
return;
|
|
}
|
|
|
|
if (a.IsImm())
|
|
{
|
|
IMUL(bits, regOp, R(regOp), a) ;
|
|
return;
|
|
}
|
|
|
|
if (bits == 16)
|
|
Write8(0x66);
|
|
a.WriteRex(this, bits, bits, regOp);
|
|
Write8(0x0F);
|
|
Write8(0xAF);
|
|
a.WriteRest(this, 0, regOp);
|
|
}
|
|
|
|
|
|
void XEmitter::WriteSSEOp(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes)
|
|
{
|
|
if (opPrefix)
|
|
Write8(opPrefix);
|
|
arg.operandReg = regOp;
|
|
arg.WriteRex(this, 0, 0);
|
|
Write8(0x0F);
|
|
if (op > 0xFF)
|
|
Write8((op >> 8) & 0xFF);
|
|
Write8(op & 0xFF);
|
|
arg.WriteRest(this, extrabytes);
|
|
}
|
|
|
|
void XEmitter::WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes)
|
|
{
|
|
WriteAVXOp(opPrefix, op, regOp, INVALID_REG, arg, extrabytes);
|
|
}
|
|
|
|
static int GetVEXmmmmm(u16 op)
|
|
{
|
|
// Currently, only 0x38 and 0x3A are used as secondary escape byte.
|
|
if ((op >> 8) == 0x3A)
|
|
return 3;
|
|
else if ((op >> 8) == 0x38)
|
|
return 2;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static int GetVEXpp(u8 opPrefix)
|
|
{
|
|
if (opPrefix == 0x66)
|
|
return 1;
|
|
else if (opPrefix == 0xF3)
|
|
return 2;
|
|
else if (opPrefix == 0xF2)
|
|
return 3;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
void XEmitter::WriteAVXOp(u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes)
|
|
{
|
|
if (!cpu_info.bAVX)
|
|
PanicAlert("Trying to use AVX on a system that doesn't support it. Bad programmer.");
|
|
int mmmmm = GetVEXmmmmm(op);
|
|
int pp = GetVEXpp(opPrefix);
|
|
// FIXME: we currently don't support 256-bit instructions, and "size" is not the vector size here
|
|
arg.WriteVex(this, regOp1, regOp2, 0, pp, mmmmm);
|
|
Write8(op & 0xFF);
|
|
arg.WriteRest(this, extrabytes, regOp1);
|
|
}
|
|
|
|
// Like the above, but more general; covers GPR-based VEX operations, like BMI1/2
|
|
void XEmitter::WriteVEXOp(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes)
|
|
{
|
|
if (size != 32 && size != 64)
|
|
PanicAlert("VEX GPR instructions only support 32-bit and 64-bit modes!");
|
|
int mmmmm = GetVEXmmmmm(op);
|
|
int pp = GetVEXpp(opPrefix);
|
|
arg.WriteVex(this, regOp1, regOp2, 0, pp, mmmmm, size == 64);
|
|
Write8(op & 0xFF);
|
|
arg.WriteRest(this, extrabytes, regOp1);
|
|
}
|
|
|
|
void XEmitter::WriteBMI1Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes)
|
|
{
|
|
CheckFlags();
|
|
if (!cpu_info.bBMI1)
|
|
PanicAlert("Trying to use BMI1 on a system that doesn't support it. Bad programmer.");
|
|
WriteVEXOp(size, opPrefix, op, regOp1, regOp2, arg, extrabytes);
|
|
}
|
|
|
|
void XEmitter::WriteBMI2Op(int size, u8 opPrefix, u16 op, X64Reg regOp1, X64Reg regOp2, OpArg arg, int extrabytes)
|
|
{
|
|
CheckFlags();
|
|
if (!cpu_info.bBMI2)
|
|
PanicAlert("Trying to use BMI2 on a system that doesn't support it. Bad programmer.");
|
|
WriteVEXOp(size, opPrefix, op, regOp1, regOp2, arg, extrabytes);
|
|
}
|
|
|
|
void XEmitter::MOVD_xmm(X64Reg dest, const OpArg &arg) {WriteSSEOp(0x66, 0x6E, dest, arg, 0);}
|
|
void XEmitter::MOVD_xmm(const OpArg &arg, X64Reg src) {WriteSSEOp(0x66, 0x7E, src, arg, 0);}
|
|
|
|
void XEmitter::MOVQ_xmm(X64Reg dest, OpArg arg)
|
|
{
|
|
#ifdef _M_X64
|
|
// Alternate encoding
|
|
// This does not display correctly in MSVC's debugger, it thinks it's a MOVD
|
|
arg.operandReg = dest;
|
|
Write8(0x66);
|
|
arg.WriteRex(this, 64, 0);
|
|
Write8(0x0f);
|
|
Write8(0x6E);
|
|
arg.WriteRest(this, 0);
|
|
#else
|
|
arg.operandReg = dest;
|
|
Write8(0xF3);
|
|
Write8(0x0f);
|
|
Write8(0x7E);
|
|
arg.WriteRest(this, 0);
|
|
#endif
|
|
}
|
|
|
|
void XEmitter::MOVQ_xmm(OpArg arg, X64Reg src)
|
|
{
|
|
if (src > 7 || arg.IsSimpleReg())
|
|
{
|
|
// Alternate encoding
|
|
// This does not display correctly in MSVC's debugger, it thinks it's a MOVD
|
|
arg.operandReg = src;
|
|
Write8(0x66);
|
|
arg.WriteRex(this, 64, 0);
|
|
Write8(0x0f);
|
|
Write8(0x7E);
|
|
arg.WriteRest(this, 0);
|
|
}
|
|
else
|
|
{
|
|
arg.operandReg = src;
|
|
arg.WriteRex(this, 0, 0);
|
|
Write8(0x66);
|
|
Write8(0x0f);
|
|
Write8(0xD6);
|
|
arg.WriteRest(this, 0);
|
|
}
|
|
}
|
|
|
|
void XEmitter::WriteMXCSR(OpArg arg, int ext)
|
|
{
|
|
if (arg.IsImm() || arg.IsSimpleReg())
|
|
_assert_msg_(DYNA_REC, 0, "MXCSR - invalid operand");
|
|
|
|
arg.operandReg = ext;
|
|
arg.WriteRex(this, 0, 0);
|
|
Write8(0x0F);
|
|
Write8(0xAE);
|
|
arg.WriteRest(this);
|
|
}
|
|
|
|
void XEmitter::STMXCSR(OpArg memloc) {WriteMXCSR(memloc, 3);}
|
|
void XEmitter::LDMXCSR(OpArg memloc) {WriteMXCSR(memloc, 2);}
|
|
|
|
void XEmitter::MOVNTDQ(OpArg arg, X64Reg regOp) {WriteSSEOp(0x66, sseMOVNTDQ, regOp, arg);}
|
|
void XEmitter::MOVNTPS(OpArg arg, X64Reg regOp) {WriteSSEOp(0x00, sseMOVNTP, regOp, arg);}
|
|
void XEmitter::MOVNTPD(OpArg arg, X64Reg regOp) {WriteSSEOp(0x66, sseMOVNTP, regOp, arg);}
|
|
|
|
void XEmitter::ADDSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseADD, regOp, arg);}
|
|
void XEmitter::ADDSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseADD, regOp, arg);}
|
|
void XEmitter::SUBSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseSUB, regOp, arg);}
|
|
void XEmitter::SUBSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseSUB, regOp, arg);}
|
|
void XEmitter::CMPSS(X64Reg regOp, OpArg arg, u8 compare) {WriteSSEOp(0xF3, sseCMP, regOp, arg, 1); Write8(compare);}
|
|
void XEmitter::CMPSD(X64Reg regOp, OpArg arg, u8 compare) {WriteSSEOp(0xF2, sseCMP, regOp, arg, 1); Write8(compare);}
|
|
void XEmitter::MULSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseMUL, regOp, arg);}
|
|
void XEmitter::MULSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMUL, regOp, arg);}
|
|
void XEmitter::DIVSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseDIV, regOp, arg);}
|
|
void XEmitter::DIVSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseDIV, regOp, arg);}
|
|
void XEmitter::MINSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseMIN, regOp, arg);}
|
|
void XEmitter::MINSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMIN, regOp, arg);}
|
|
void XEmitter::MAXSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseMAX, regOp, arg);}
|
|
void XEmitter::MAXSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMAX, regOp, arg);}
|
|
void XEmitter::SQRTSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseSQRT, regOp, arg);}
|
|
void XEmitter::SQRTSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseSQRT, regOp, arg);}
|
|
void XEmitter::RSQRTSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseRSQRT, regOp, arg);}
|
|
|
|
void XEmitter::ADDPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseADD, regOp, arg);}
|
|
void XEmitter::ADDPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseADD, regOp, arg);}
|
|
void XEmitter::SUBPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseSUB, regOp, arg);}
|
|
void XEmitter::SUBPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseSUB, regOp, arg);}
|
|
void XEmitter::CMPPS(X64Reg regOp, OpArg arg, u8 compare) {WriteSSEOp(0x00, sseCMP, regOp, arg, 1); Write8(compare);}
|
|
void XEmitter::CMPPD(X64Reg regOp, OpArg arg, u8 compare) {WriteSSEOp(0x66, sseCMP, regOp, arg, 1); Write8(compare);}
|
|
void XEmitter::ANDPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseAND, regOp, arg);}
|
|
void XEmitter::ANDPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseAND, regOp, arg);}
|
|
void XEmitter::ANDNPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseANDN, regOp, arg);}
|
|
void XEmitter::ANDNPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseANDN, regOp, arg);}
|
|
void XEmitter::ORPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseOR, regOp, arg);}
|
|
void XEmitter::ORPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseOR, regOp, arg);}
|
|
void XEmitter::XORPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseXOR, regOp, arg);}
|
|
void XEmitter::XORPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseXOR, regOp, arg);}
|
|
void XEmitter::MULPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseMUL, regOp, arg);}
|
|
void XEmitter::MULPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMUL, regOp, arg);}
|
|
void XEmitter::DIVPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseDIV, regOp, arg);}
|
|
void XEmitter::DIVPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseDIV, regOp, arg);}
|
|
void XEmitter::MINPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseMIN, regOp, arg);}
|
|
void XEmitter::MINPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMIN, regOp, arg);}
|
|
void XEmitter::MAXPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseMAX, regOp, arg);}
|
|
void XEmitter::MAXPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMAX, regOp, arg);}
|
|
void XEmitter::SQRTPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseSQRT, regOp, arg);}
|
|
void XEmitter::SQRTPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseSQRT, regOp, arg);}
|
|
void XEmitter::RSQRTPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseRSQRT, regOp, arg);}
|
|
void XEmitter::SHUFPS(X64Reg regOp, OpArg arg, u8 shuffle) {WriteSSEOp(0x00, sseSHUF, regOp, arg,1); Write8(shuffle);}
|
|
void XEmitter::SHUFPD(X64Reg regOp, OpArg arg, u8 shuffle) {WriteSSEOp(0x66, sseSHUF, regOp, arg,1); Write8(shuffle);}
|
|
|
|
void XEmitter::COMISS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseCOMIS, regOp, arg);} //weird that these should be packed
|
|
void XEmitter::COMISD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseCOMIS, regOp, arg);} //ordered
|
|
void XEmitter::UCOMISS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseUCOMIS, regOp, arg);} //unordered
|
|
void XEmitter::UCOMISD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseUCOMIS, regOp, arg);}
|
|
|
|
void XEmitter::MOVAPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseMOVAPfromRM, regOp, arg);}
|
|
void XEmitter::MOVAPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMOVAPfromRM, regOp, arg);}
|
|
void XEmitter::MOVAPS(OpArg arg, X64Reg regOp) {WriteSSEOp(0x00, sseMOVAPtoRM, regOp, arg);}
|
|
void XEmitter::MOVAPD(OpArg arg, X64Reg regOp) {WriteSSEOp(0x66, sseMOVAPtoRM, regOp, arg);}
|
|
|
|
void XEmitter::MOVUPS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, sseMOVUPfromRM, regOp, arg);}
|
|
void XEmitter::MOVUPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMOVUPfromRM, regOp, arg);}
|
|
void XEmitter::MOVUPS(OpArg arg, X64Reg regOp) {WriteSSEOp(0x00, sseMOVUPtoRM, regOp, arg);}
|
|
void XEmitter::MOVUPD(OpArg arg, X64Reg regOp) {WriteSSEOp(0x66, sseMOVUPtoRM, regOp, arg);}
|
|
|
|
void XEmitter::MOVDQA(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, sseMOVDQfromRM, regOp, arg);}
|
|
void XEmitter::MOVDQA(OpArg arg, X64Reg regOp) {WriteSSEOp(0x66, sseMOVDQtoRM, regOp, arg);}
|
|
void XEmitter::MOVDQU(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseMOVDQfromRM, regOp, arg);}
|
|
void XEmitter::MOVDQU(OpArg arg, X64Reg regOp) {WriteSSEOp(0xF3, sseMOVDQtoRM, regOp, arg);}
|
|
|
|
void XEmitter::MOVSS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, sseMOVUPfromRM, regOp, arg);}
|
|
void XEmitter::MOVSD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMOVUPfromRM, regOp, arg);}
|
|
void XEmitter::MOVSS(OpArg arg, X64Reg regOp) {WriteSSEOp(0xF3, sseMOVUPtoRM, regOp, arg);}
|
|
void XEmitter::MOVSD(OpArg arg, X64Reg regOp) {WriteSSEOp(0xF2, sseMOVUPtoRM, regOp, arg);}
|
|
|
|
void XEmitter::MOVLPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMOVLPDfromRM, regOp, arg);}
|
|
void XEmitter::MOVHPD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, sseMOVHPDfromRM, regOp, arg);}
|
|
void XEmitter::MOVLPD(OpArg arg, X64Reg regOp) {WriteSSEOp(0xF2, sseMOVLPDtoRM, regOp, arg);}
|
|
void XEmitter::MOVHPD(OpArg arg, X64Reg regOp) {WriteSSEOp(0xF2, sseMOVHPDtoRM, regOp, arg);}
|
|
|
|
void XEmitter::MOVHLPS(X64Reg regOp1, X64Reg regOp2) {WriteSSEOp(0x00, sseMOVHLPS, regOp1, R(regOp2));}
|
|
void XEmitter::MOVLHPS(X64Reg regOp1, X64Reg regOp2) {WriteSSEOp(0x00, sseMOVLHPS, regOp1, R(regOp2));}
|
|
|
|
void XEmitter::CVTPS2PD(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, 0x5A, regOp, arg);}
|
|
void XEmitter::CVTPD2PS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, 0x5A, regOp, arg);}
|
|
|
|
void XEmitter::CVTSD2SS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, 0x5A, regOp, arg);}
|
|
void XEmitter::CVTSS2SD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0x5A, regOp, arg);}
|
|
void XEmitter::CVTSD2SI(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, 0x2D, regOp, arg);}
|
|
void XEmitter::CVTSS2SI(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0x2D, regOp, arg);}
|
|
void XEmitter::CVTSI2SD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, 0x2A, regOp, arg);}
|
|
void XEmitter::CVTSI2SS(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0x2A, regOp, arg);}
|
|
|
|
void XEmitter::CVTDQ2PD(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0xE6, regOp, arg);}
|
|
void XEmitter::CVTDQ2PS(X64Reg regOp, OpArg arg) {WriteSSEOp(0x00, 0x5B, regOp, arg);}
|
|
void XEmitter::CVTPD2DQ(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, 0xE6, regOp, arg);}
|
|
void XEmitter::CVTPS2DQ(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, 0x5B, regOp, arg);}
|
|
|
|
void XEmitter::CVTTSD2SI(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF2, 0x2C, regOp, arg);}
|
|
void XEmitter::CVTTSS2SI(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0x2C, regOp, arg);}
|
|
void XEmitter::CVTTPS2DQ(X64Reg regOp, OpArg arg) {WriteSSEOp(0xF3, 0x5B, regOp, arg);}
|
|
void XEmitter::CVTTPD2DQ(X64Reg regOp, OpArg arg) {WriteSSEOp(0x66, 0xE6, regOp, arg);}
|
|
|
|
void XEmitter::MASKMOVDQU(X64Reg dest, X64Reg src) {WriteSSEOp(0x66, sseMASKMOVDQU, dest, R(src));}
|
|
|
|
void XEmitter::MOVMSKPS(X64Reg dest, OpArg arg) {WriteSSEOp(0x00, 0x50, dest, arg);}
|
|
void XEmitter::MOVMSKPD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x50, dest, arg);}
|
|
|
|
void XEmitter::LDDQU(X64Reg dest, OpArg arg) {WriteSSEOp(0xF2, sseLDDQU, dest, arg);} // For integer data only
|
|
|
|
// THESE TWO ARE UNTESTED.
|
|
void XEmitter::UNPCKLPS(X64Reg dest, OpArg arg) {WriteSSEOp(0x00, 0x14, dest, arg);}
|
|
void XEmitter::UNPCKHPS(X64Reg dest, OpArg arg) {WriteSSEOp(0x00, 0x15, dest, arg);}
|
|
|
|
void XEmitter::UNPCKLPD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x14, dest, arg);}
|
|
void XEmitter::UNPCKHPD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x15, dest, arg);}
|
|
|
|
void XEmitter::MOVDDUP(X64Reg regOp, OpArg arg)
|
|
{
|
|
if (cpu_info.bSSE3)
|
|
{
|
|
WriteSSEOp(0xF2, 0x12, regOp, arg); //SSE3 movddup
|
|
}
|
|
else
|
|
{
|
|
// Simulate this instruction with SSE2 instructions
|
|
if (!arg.IsSimpleReg(regOp))
|
|
MOVSD(regOp, arg);
|
|
UNPCKLPD(regOp, R(regOp));
|
|
}
|
|
}
|
|
|
|
//There are a few more left
|
|
|
|
// Also some integer instructions are missing
|
|
void XEmitter::PACKSSDW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x6B, dest, arg);}
|
|
void XEmitter::PACKSSWB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x63, dest, arg);}
|
|
void XEmitter::PACKUSWB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x67, dest, arg);}
|
|
|
|
void XEmitter::PUNPCKLBW(X64Reg dest, const OpArg &arg) {WriteSSEOp(0x66, 0x60, dest, arg);}
|
|
void XEmitter::PUNPCKLWD(X64Reg dest, const OpArg &arg) {WriteSSEOp(0x66, 0x61, dest, arg);}
|
|
void XEmitter::PUNPCKLDQ(X64Reg dest, const OpArg &arg) {WriteSSEOp(0x66, 0x62, dest, arg);}
|
|
void XEmitter::PUNPCKLQDQ(X64Reg dest, const OpArg &arg) {WriteSSEOp(0x66, 0x6C, dest, arg);}
|
|
|
|
void XEmitter::PSRLW(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x71, (X64Reg)2, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSRLD(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x72, (X64Reg)2, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSRLQ(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x73, (X64Reg)2, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSRLQ(X64Reg reg, OpArg arg)
|
|
{
|
|
WriteSSEOp(0x66, 0xd3, reg, arg);
|
|
}
|
|
|
|
void XEmitter::PSRLDQ(X64Reg reg, int shift) {
|
|
WriteSSEOp(0x66, 0x73, (X64Reg)3, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSLLW(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x71, (X64Reg)6, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSLLD(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x72, (X64Reg)6, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSLLQ(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x73, (X64Reg)6, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSLLDQ(X64Reg reg, int shift) {
|
|
WriteSSEOp(0x66, 0x73, (X64Reg)7, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSRAW(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x71, (X64Reg)4, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::PSRAD(X64Reg reg, int shift)
|
|
{
|
|
WriteSSEOp(0x66, 0x72, (X64Reg)4, R(reg));
|
|
Write8(shift);
|
|
}
|
|
|
|
void XEmitter::WriteSSSE3Op(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes)
|
|
{
|
|
if (!cpu_info.bSSSE3)
|
|
PanicAlert("Trying to use SSSE3 on a system that doesn't support it. Bad programmer.");
|
|
WriteSSEOp(opPrefix, op, regOp, arg, extrabytes);
|
|
}
|
|
|
|
void XEmitter::WriteSSE41Op(u8 opPrefix, u16 op, X64Reg regOp, OpArg arg, int extrabytes)
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{
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if (!cpu_info.bSSE4_1)
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PanicAlert("Trying to use SSE4.1 on a system that doesn't support it. Bad programmer.");
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WriteSSEOp(opPrefix, op, regOp, arg, extrabytes);
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}
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void XEmitter::PSHUFB(X64Reg dest, OpArg arg) {WriteSSSE3Op(0x66, 0x3800, dest, arg);}
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void XEmitter::PTEST(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3817, dest, arg);}
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void XEmitter::PACKUSDW(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x382b, dest, arg);}
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void XEmitter::PMINSB(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3838, dest, arg);}
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void XEmitter::PMINSD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3839, dest, arg);}
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void XEmitter::PMINUW(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383a, dest, arg);}
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void XEmitter::PMINUD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383b, dest, arg);}
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void XEmitter::PMAXSB(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383c, dest, arg);}
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void XEmitter::PMAXSD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383d, dest, arg);}
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void XEmitter::PMAXUW(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383e, dest, arg);}
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void XEmitter::PMAXUD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x383f, dest, arg);}
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void XEmitter::PMOVSXBW(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3820, dest, arg);}
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void XEmitter::PMOVSXBD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3821, dest, arg);}
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void XEmitter::PMOVSXBQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3822, dest, arg);}
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void XEmitter::PMOVSXWD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3823, dest, arg);}
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void XEmitter::PMOVSXWQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3824, dest, arg);}
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void XEmitter::PMOVSXDQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3825, dest, arg);}
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void XEmitter::PMOVZXBW(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3830, dest, arg);}
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void XEmitter::PMOVZXBD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3831, dest, arg);}
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void XEmitter::PMOVZXBQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3832, dest, arg);}
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void XEmitter::PMOVZXWD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3833, dest, arg);}
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void XEmitter::PMOVZXWQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3834, dest, arg);}
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void XEmitter::PMOVZXDQ(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3835, dest, arg);}
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void XEmitter::PBLENDVB(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3810, dest, arg);}
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void XEmitter::BLENDVPS(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3814, dest, arg);}
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void XEmitter::BLENDVPD(X64Reg dest, OpArg arg) {WriteSSE41Op(0x66, 0x3815, dest, arg);}
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void XEmitter::ROUNDSS(X64Reg dest, OpArg arg, u8 mode) {WriteSSE41Op(0x66, 0x3A0A, dest, arg, 1); Write8(mode);}
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void XEmitter::ROUNDSD(X64Reg dest, OpArg arg, u8 mode) {WriteSSE41Op(0x66, 0x3A0B, dest, arg, 1); Write8(mode);}
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void XEmitter::ROUNDPS(X64Reg dest, OpArg arg, u8 mode) {WriteSSE41Op(0x66, 0x3A08, dest, arg, 1); Write8(mode);}
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void XEmitter::ROUNDPD(X64Reg dest, OpArg arg, u8 mode) {WriteSSE41Op(0x66, 0x3A09, dest, arg, 1); Write8(mode);}
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void XEmitter::PAND(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDB, dest, arg);}
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void XEmitter::PANDN(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDF, dest, arg);}
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void XEmitter::PXOR(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xEF, dest, arg);}
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void XEmitter::POR(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xEB, dest, arg);}
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void XEmitter::PADDB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xFC, dest, arg);}
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void XEmitter::PADDW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xFD, dest, arg);}
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void XEmitter::PADDD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xFE, dest, arg);}
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void XEmitter::PADDQ(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xD4, dest, arg);}
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void XEmitter::PADDSB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xEC, dest, arg);}
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void XEmitter::PADDSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xED, dest, arg);}
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void XEmitter::PADDUSB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDC, dest, arg);}
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void XEmitter::PADDUSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDD, dest, arg);}
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void XEmitter::PSUBB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xF8, dest, arg);}
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void XEmitter::PSUBW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xF9, dest, arg);}
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void XEmitter::PSUBD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xFA, dest, arg);}
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void XEmitter::PSUBQ(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xFB, dest, arg);}
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void XEmitter::PSUBSB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xE8, dest, arg);}
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void XEmitter::PSUBSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xE9, dest, arg);}
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void XEmitter::PSUBUSB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xD8, dest, arg);}
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void XEmitter::PSUBUSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xD9, dest, arg);}
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void XEmitter::PAVGB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xE0, dest, arg);}
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void XEmitter::PAVGW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xE3, dest, arg);}
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void XEmitter::PCMPEQB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x74, dest, arg);}
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void XEmitter::PCMPEQW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x75, dest, arg);}
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void XEmitter::PCMPEQD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x76, dest, arg);}
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void XEmitter::PCMPGTB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x64, dest, arg);}
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void XEmitter::PCMPGTW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x65, dest, arg);}
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void XEmitter::PCMPGTD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0x66, dest, arg);}
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void XEmitter::PEXTRW(X64Reg dest, OpArg arg, u8 subreg) {WriteSSEOp(0x66, 0xC5, dest, arg, 1); Write8(subreg);}
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void XEmitter::PINSRW(X64Reg dest, OpArg arg, u8 subreg) {WriteSSEOp(0x66, 0xC4, dest, arg, 1); Write8(subreg);}
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void XEmitter::PMADDWD(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xF5, dest, arg); }
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void XEmitter::PSADBW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xF6, dest, arg);}
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void XEmitter::PMAXSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xEE, dest, arg); }
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void XEmitter::PMAXUB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDE, dest, arg); }
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void XEmitter::PMINSW(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xEA, dest, arg); }
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void XEmitter::PMINUB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xDA, dest, arg); }
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void XEmitter::PMOVMSKB(X64Reg dest, OpArg arg) {WriteSSEOp(0x66, 0xD7, dest, arg); }
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void XEmitter::PSHUFD(X64Reg regOp, OpArg arg, u8 shuffle) {WriteSSEOp(0x66, 0x70, regOp, arg, 1); Write8(shuffle);}
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void XEmitter::PSHUFLW(X64Reg regOp, OpArg arg, u8 shuffle) {WriteSSEOp(0xF2, 0x70, regOp, arg, 1); Write8(shuffle);}
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void XEmitter::PSHUFHW(X64Reg regOp, OpArg arg, u8 shuffle) {WriteSSEOp(0xF3, 0x70, regOp, arg, 1); Write8(shuffle);}
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// VEX
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void XEmitter::VADDSD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0xF2, sseADD, regOp1, regOp2, arg);}
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void XEmitter::VSUBSD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0xF2, sseSUB, regOp1, regOp2, arg);}
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void XEmitter::VMULSD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0xF2, sseMUL, regOp1, regOp2, arg);}
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void XEmitter::VDIVSD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0xF2, sseDIV, regOp1, regOp2, arg);}
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void XEmitter::VADDPD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseADD, regOp1, regOp2, arg);}
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void XEmitter::VSUBPD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseSUB, regOp1, regOp2, arg);}
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void XEmitter::VMULPD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseMUL, regOp1, regOp2, arg);}
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void XEmitter::VDIVPD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseDIV, regOp1, regOp2, arg);}
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void XEmitter::VSQRTSD(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0xF2, sseSQRT, regOp1, regOp2, arg);}
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void XEmitter::VPAND(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseAND, regOp1, regOp2, arg);}
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void XEmitter::VPANDN(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseANDN, regOp1, regOp2, arg);}
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void XEmitter::VPOR(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseOR, regOp1, regOp2, arg);}
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void XEmitter::VPXOR(X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteAVXOp(0x66, sseXOR, regOp1, regOp2, arg);}
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void XEmitter::VSHUFPD(X64Reg regOp1, X64Reg regOp2, OpArg arg, u8 shuffle) {WriteAVXOp(0x66, sseSHUF, regOp1, regOp2, arg, 1); Write8(shuffle);}
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void XEmitter::VUNPCKLPD(X64Reg regOp1, X64Reg regOp2, OpArg arg){WriteAVXOp(0x66, 0x14, regOp1, regOp2, arg);}
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void XEmitter::VUNPCKHPD(X64Reg regOp1, X64Reg regOp2, OpArg arg){WriteAVXOp(0x66, 0x15, regOp1, regOp2, arg);}
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void XEmitter::SARX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2) {WriteBMI2Op(bits, 0xF3, 0x38F7, regOp1, regOp2, arg);}
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void XEmitter::SHLX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2) {WriteBMI2Op(bits, 0x66, 0x38F7, regOp1, regOp2, arg);}
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void XEmitter::SHRX(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2) {WriteBMI2Op(bits, 0xF2, 0x38F7, regOp1, regOp2, arg);}
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void XEmitter::RORX(int bits, X64Reg regOp, OpArg arg, u8 rotate) {WriteBMI2Op(bits, 0xF2, 0x3AF0, regOp, INVALID_REG, arg, 1); Write8(rotate);}
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void XEmitter::PEXT(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteBMI2Op(bits, 0xF3, 0x38F5, regOp1, regOp2, arg);}
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void XEmitter::PDEP(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteBMI2Op(bits, 0xF2, 0x38F5, regOp1, regOp2, arg);}
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void XEmitter::MULX(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteBMI2Op(bits, 0xF2, 0x38F6, regOp2, regOp1, arg);}
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void XEmitter::BZHI(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2) {WriteBMI2Op(bits, 0x00, 0x38F5, regOp1, regOp2, arg);}
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void XEmitter::BLSR(int bits, X64Reg regOp, OpArg arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x1, regOp, arg);}
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void XEmitter::BLSMSK(int bits, X64Reg regOp, OpArg arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x2, regOp, arg);}
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void XEmitter::BLSI(int bits, X64Reg regOp, OpArg arg) {WriteBMI1Op(bits, 0x00, 0x38F3, (X64Reg)0x3, regOp, arg);}
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void XEmitter::BEXTR(int bits, X64Reg regOp1, OpArg arg, X64Reg regOp2){WriteBMI1Op(bits, 0x00, 0x38F7, regOp1, regOp2, arg);}
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void XEmitter::ANDN(int bits, X64Reg regOp1, X64Reg regOp2, OpArg arg) {WriteBMI1Op(bits, 0x00, 0x38F2, regOp1, regOp2, arg);}
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// Prefixes
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void XEmitter::LOCK() { Write8(0xF0); }
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void XEmitter::REP() { Write8(0xF3); }
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void XEmitter::REPNE() { Write8(0xF2); }
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void XEmitter::FSOverride() { Write8(0x64); }
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void XEmitter::GSOverride() { Write8(0x65); }
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void XEmitter::FWAIT()
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{
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Write8(0x9B);
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}
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// TODO: make this more generic
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void XEmitter::WriteFloatLoadStore(int bits, FloatOp op, FloatOp op_80b, OpArg arg)
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{
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int mf = 0;
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_assert_msg_(DYNA_REC, !(bits == 80 && op_80b == floatINVALID), "WriteFloatLoadStore: 80 bits not supported for this instruction");
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switch (bits)
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{
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case 32: mf = 0; break;
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case 64: mf = 4; break;
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case 80: mf = 2; break;
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default: _assert_msg_(DYNA_REC, 0, "WriteFloatLoadStore: invalid bits (should be 32/64/80)");
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}
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Write8(0xd9 | mf);
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// x87 instructions use the reg field of the ModR/M byte as opcode:
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if (bits == 80)
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op = op_80b;
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arg.WriteRest(this, 0, (X64Reg) op);
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}
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void XEmitter::FLD(int bits, OpArg src) {WriteFloatLoadStore(bits, floatLD, floatLD80, src);}
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void XEmitter::FST(int bits, OpArg dest) {WriteFloatLoadStore(bits, floatST, floatINVALID, dest);}
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void XEmitter::FSTP(int bits, OpArg dest) {WriteFloatLoadStore(bits, floatSTP, floatSTP80, dest);}
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void XEmitter::FNSTSW_AX() { Write8(0xDF); Write8(0xE0); }
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void XEmitter::RDTSC() { Write8(0x0F); Write8(0x31); }
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void XCodeBlock::AllocCodeSpace(int size) {
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region_size = size;
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region = (u8*)AllocateExecutableMemory(region_size);
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SetCodePtr(region);
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}
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void XCodeBlock::ClearCodeSpace() {
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// x86/64: 0xCC = breakpoint
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memset(region, 0xCC, region_size);
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ResetCodePtr();
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}
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void XCodeBlock::FreeCodeSpace() {
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FreeMemoryPages(region, region_size);
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region = NULL;
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region_size = 0;
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}
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void XCodeBlock::WriteProtect() {
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WriteProtectMemory(region, region_size, true);
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}
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}
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