| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| // |
| // Modified by the Subzero authors. |
| // |
| //===- subzero/src/assembler_ia32.cpp - Assembler for x86-32 -------------===// |
| // |
| // The Subzero Code Generator |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Assembler class for x86-32. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "assembler_ia32.h" |
| #include "IceCfg.h" |
| #include "IceMemoryRegion.h" |
| #include "IceOperand.h" |
| |
| namespace Ice { |
| namespace x86 { |
| |
| const Type BrokenType = IceType_i32; |
| |
| class DirectCallRelocation : public AssemblerFixup { |
| public: |
| static DirectCallRelocation *create(Assembler *Asm, FixupKind Kind, |
| const ConstantRelocatable *Sym) { |
| return new (Asm->Allocate<DirectCallRelocation>()) |
| DirectCallRelocation(Kind, Sym); |
| } |
| |
| void Process(const MemoryRegion ®ion, intptr_t position) override { |
| // Direct calls are relative to the following instruction on x86. |
| int32_t pointer = region.Load<int32_t>(position); |
| int32_t delta = region.start() + position + sizeof(int32_t); |
| region.Store<int32_t>(position, pointer - delta); |
| } |
| |
| private: |
| DirectCallRelocation(FixupKind Kind, const ConstantRelocatable *Sym) |
| : AssemblerFixup(Kind, Sym) {} |
| }; |
| |
| Address Address::ofConstPool(GlobalContext *Ctx, Assembler *Asm, |
| const Constant *Imm) { |
| // We should make this much lighter-weight. E.g., just record the const pool |
| // entry ID. |
| std::string Buffer; |
| llvm::raw_string_ostream StrBuf(Buffer); |
| Type Ty = Imm->getType(); |
| assert(llvm::isa<ConstantFloat>(Imm) || llvm::isa<ConstantDouble>(Imm)); |
| StrBuf << "L$" << Ty << "$" << Imm->getPoolEntryID(); |
| const int64_t Offset = 0; |
| const bool SuppressMangling = true; |
| Constant *Sym = |
| Ctx->getConstantSym(Ty, Offset, StrBuf.str(), SuppressMangling); |
| AssemblerFixup *Fixup = x86::DisplacementRelocation::create( |
| Asm, FK_Abs_4, llvm::cast<ConstantRelocatable>(Sym)); |
| return x86::Address::Absolute(Offset, Fixup); |
| } |
| |
| void AssemblerX86::call(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitRegisterOperand(2, reg); |
| } |
| |
| void AssemblerX86::call(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitOperand(2, address); |
| } |
| |
| void AssemblerX86::call(Label *label) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xE8); |
| static const int kSize = 5; |
| EmitLabel(label, kSize); |
| } |
| |
| void AssemblerX86::call(const ConstantRelocatable *label) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| intptr_t call_start = buffer_.GetPosition(); |
| EmitUint8(0xE8); |
| EmitFixup(DirectCallRelocation::create(this, FK_PcRel_4, label)); |
| EmitInt32(-4); |
| assert((buffer_.GetPosition() - call_start) == kCallExternalLabelSize); |
| } |
| |
| void AssemblerX86::pushl(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x50 + reg); |
| } |
| |
| void AssemblerX86::pushl(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitOperand(6, address); |
| } |
| |
| void AssemblerX86::pushl(const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x68); |
| EmitImmediate(BrokenType, imm); |
| } |
| |
| void AssemblerX86::popl(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x58 + reg); |
| } |
| |
| void AssemblerX86::popl(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x8F); |
| EmitOperand(0, address); |
| } |
| |
| void AssemblerX86::pushal() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x60); |
| } |
| |
| void AssemblerX86::popal() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x61); |
| } |
| |
| void AssemblerX86::setcc(CondX86::BrCond condition, ByteRegister dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x90 + condition); |
| EmitUint8(0xC0 + dst); |
| } |
| |
| void AssemblerX86::movl(GPRRegister dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xB8 + dst); |
| EmitImmediate(BrokenType, imm); |
| } |
| |
| void AssemblerX86::movl(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x89); |
| EmitRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::movl(GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x8B); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movl(const Address &dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x89); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::movl(const Address &dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xC7); |
| EmitOperand(0, dst); |
| EmitImmediate(BrokenType, imm); |
| } |
| |
| void AssemblerX86::movzxb(GPRRegister dst, ByteRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xB6); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movzxb(GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xB6); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movsxb(GPRRegister dst, ByteRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xBE); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movsxb(GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xBE); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movb(ByteRegister dst, const Address &src) { |
| (void)dst; |
| (void)src; |
| // FATAL |
| llvm_unreachable("Use movzxb or movsxb instead."); |
| } |
| |
| void AssemblerX86::movb(const Address &dst, ByteRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x88); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::movb(const Address &dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xC6); |
| EmitOperand(RegX8632::Encoded_Reg_eax, dst); |
| assert(imm.is_int8()); |
| EmitUint8(imm.value() & 0xFF); |
| } |
| |
| void AssemblerX86::movzxw(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xB7); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movzxw(GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xB7); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movsxw(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xBF); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movsxw(GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xBF); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movw(GPRRegister dst, const Address &src) { |
| (void)dst; |
| (void)src; |
| // FATAL |
| llvm_unreachable("Use movzxw or movsxw instead."); |
| } |
| |
| void AssemblerX86::movw(const Address &dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitOperandSizeOverride(); |
| EmitUint8(0x89); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::lea(Type Ty, GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i16 || Ty == IceType_i32); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x8D); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::cmov(CondX86::BrCond cond, GPRRegister dst, |
| GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x40 + cond); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::rep_movsb() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0xA4); |
| } |
| |
| void AssemblerX86::movss(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x10); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movss(const Address &dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x11); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::movss(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x11); |
| EmitXmmRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::movd(XmmRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x6E); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movd(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x6E); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movd(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x7E); |
| EmitRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::movd(const Address &dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x7E); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::movq(const Address &dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xD6); |
| EmitOperand(src, Operand(dst)); |
| } |
| |
| void AssemblerX86::movq(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x7E); |
| EmitOperand(dst, Operand(src)); |
| } |
| |
| void AssemblerX86::addss(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x58); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::addss(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x58); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::subss(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x5C); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::subss(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x5C); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::mulss(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x59); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::mulss(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x59); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::divss(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x5E); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::divss(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x5E); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::flds(const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xD9); |
| EmitOperand(0, src); |
| } |
| |
| void AssemblerX86::fstps(const Address &dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xD9); |
| EmitOperand(3, dst); |
| } |
| |
| void AssemblerX86::movsd(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x10); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movsd(const Address &dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x11); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::movsd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x11); |
| EmitXmmRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::movaps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x28); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movups(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x10); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::movups(const Address &dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x11); |
| EmitOperand(src, dst); |
| } |
| |
| void AssemblerX86::padd(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) { |
| EmitUint8(0xFC); |
| } else if (Ty == IceType_i16) { |
| EmitUint8(0xFD); |
| } else { |
| EmitUint8(0xFE); |
| } |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::padd(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) { |
| EmitUint8(0xFC); |
| } else if (Ty == IceType_i16) { |
| EmitUint8(0xFD); |
| } else { |
| EmitUint8(0xFE); |
| } |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::pand(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xDB); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pand(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xDB); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::pandn(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xDF); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pandn(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xDF); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::pmuludq(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xF4); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pmuludq(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xF4); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::por(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xEB); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::por(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xEB); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::psub(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) { |
| EmitUint8(0xF8); |
| } else if (Ty == IceType_i16) { |
| EmitUint8(0xF9); |
| } else { |
| EmitUint8(0xFA); |
| } |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::psub(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) { |
| EmitUint8(0xF8); |
| } else if (Ty == IceType_i16) { |
| EmitUint8(0xF9); |
| } else { |
| EmitUint8(0xFA); |
| } |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::pxor(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xEF); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pxor(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xEF); |
| EmitOperand(dst, src); |
| } |
| |
| // {add,sub,mul,div}ps are given a Ty parameter for consistency with |
| // {add,sub,mul,div}ss. In the future, when the PNaCl ABI allows |
| // addpd, etc., we can use the Ty parameter to decide on adding |
| // a 0x66 prefix. |
| void AssemblerX86::addps(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x58); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::addps(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x58); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::subps(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5C); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::subps(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5C); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::divps(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5E); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::divps(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5E); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::mulps(Type /* Ty */, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x59); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::mulps(Type /* Ty */, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x59); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::minps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5D); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::maxps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5F); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::andps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x54); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::andps(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x54); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::orps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x56); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cmpps(XmmRegister dst, XmmRegister src, |
| CondX86::CmppsCond CmpCondition) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xC2); |
| EmitXmmRegisterOperand(dst, src); |
| EmitUint8(CmpCondition); |
| } |
| |
| void AssemblerX86::cmpps(XmmRegister dst, const Address &src, |
| CondX86::CmppsCond CmpCondition) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xC2); |
| EmitOperand(dst, src); |
| EmitUint8(CmpCondition); |
| } |
| |
| void AssemblerX86::sqrtps(XmmRegister dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x51); |
| EmitXmmRegisterOperand(dst, dst); |
| } |
| |
| void AssemblerX86::rsqrtps(XmmRegister dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x52); |
| EmitXmmRegisterOperand(dst, dst); |
| } |
| |
| void AssemblerX86::reciprocalps(XmmRegister dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x53); |
| EmitXmmRegisterOperand(dst, dst); |
| } |
| |
| void AssemblerX86::movhlps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x12); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movlhps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x16); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::unpcklps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x14); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::unpckhps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x15); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::unpcklpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x14); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::unpckhpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x15); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::set1ps(XmmRegister dst, GPRRegister tmp1, |
| const Immediate &imm) { |
| // Load 32-bit immediate value into tmp1. |
| movl(tmp1, imm); |
| // Move value from tmp1 into dst. |
| movd(dst, tmp1); |
| // Broadcast low lane into other three lanes. |
| shufps(dst, dst, Immediate(0x0)); |
| } |
| |
| void AssemblerX86::shufps(XmmRegister dst, XmmRegister src, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xC6); |
| EmitXmmRegisterOperand(dst, src); |
| assert(imm.is_uint8()); |
| EmitUint8(imm.value()); |
| } |
| |
| void AssemblerX86::minpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x5D); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::maxpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x5F); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::sqrtpd(XmmRegister dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x51); |
| EmitXmmRegisterOperand(dst, dst); |
| } |
| |
| void AssemblerX86::cvtps2pd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x5A); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvtpd2ps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x5A); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::shufpd(XmmRegister dst, XmmRegister src, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0xC6); |
| EmitXmmRegisterOperand(dst, src); |
| assert(imm.is_uint8()); |
| EmitUint8(imm.value()); |
| } |
| |
| void AssemblerX86::cvtsi2ss(XmmRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x2A); |
| EmitOperand(dst, Operand(src)); |
| } |
| |
| void AssemblerX86::cvtsi2sd(XmmRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x2A); |
| EmitOperand(dst, Operand(src)); |
| } |
| |
| void AssemblerX86::cvtss2si(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x2D); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvtss2sd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x5A); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvtsd2si(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x2D); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvttss2si(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0x2C); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvttsd2si(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x2C); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvtsd2ss(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x5A); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::cvtdq2pd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF3); |
| EmitUint8(0x0F); |
| EmitUint8(0xE6); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::ucomiss(Type Ty, XmmRegister a, XmmRegister b) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_f64) |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x2E); |
| EmitXmmRegisterOperand(a, b); |
| } |
| |
| void AssemblerX86::ucomiss(Type Ty, XmmRegister a, const Address &b) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_f64) |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x2E); |
| EmitOperand(a, b); |
| } |
| |
| void AssemblerX86::movmskpd(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x50); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::movmskps(GPRRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x50); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::sqrtss(Type Ty, XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x51); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::sqrtss(Type Ty, XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(isFloat32Asserting32Or64(Ty) ? 0xF3 : 0xF2); |
| EmitUint8(0x0F); |
| EmitUint8(0x51); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::xorpd(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x57); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::xorpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x57); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::orpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x56); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::xorps(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x57); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::xorps(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x57); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::andpd(XmmRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x54); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::andpd(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x54); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pextrd(GPRRegister dst, XmmRegister src, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x3A); |
| EmitUint8(0x16); |
| EmitOperand(src, Operand(dst)); |
| assert(imm.is_uint8()); |
| EmitUint8(imm.value()); |
| } |
| |
| void AssemblerX86::pmovsxdq(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x38); |
| EmitUint8(0x25); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::pcmpeqq(XmmRegister dst, XmmRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x38); |
| EmitUint8(0x29); |
| EmitXmmRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::roundsd(XmmRegister dst, XmmRegister src, |
| RoundingMode mode) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x3A); |
| EmitUint8(0x0B); |
| EmitXmmRegisterOperand(dst, src); |
| // Mask precision exeption. |
| EmitUint8(static_cast<uint8_t>(mode) | 0x8); |
| } |
| |
| void AssemblerX86::fldl(const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDD); |
| EmitOperand(0, src); |
| } |
| |
| void AssemblerX86::fstpl(const Address &dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDD); |
| EmitOperand(3, dst); |
| } |
| |
| void AssemblerX86::fnstcw(const Address &dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xD9); |
| EmitOperand(7, dst); |
| } |
| |
| void AssemblerX86::fldcw(const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xD9); |
| EmitOperand(5, src); |
| } |
| |
| void AssemblerX86::fistpl(const Address &dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDF); |
| EmitOperand(7, dst); |
| } |
| |
| void AssemblerX86::fistps(const Address &dst) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDB); |
| EmitOperand(3, dst); |
| } |
| |
| void AssemblerX86::fildl(const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDF); |
| EmitOperand(5, src); |
| } |
| |
| void AssemblerX86::filds(const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xDB); |
| EmitOperand(0, src); |
| } |
| |
| void AssemblerX86::fincstp() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xD9); |
| EmitUint8(0xF7); |
| } |
| |
| void AssemblerX86::cmpl(GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitComplex(BrokenType, 7, Operand(reg), imm); |
| } |
| |
| void AssemblerX86::cmpl(GPRRegister reg0, GPRRegister reg1) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x3B); |
| EmitOperand(reg0, Operand(reg1)); |
| } |
| |
| void AssemblerX86::cmpl(GPRRegister reg, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x3B); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::cmpl(const Address &address, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x39); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::cmpl(const Address &address, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitComplex(BrokenType, 7, address, imm); |
| } |
| |
| void AssemblerX86::cmpb(const Address &address, const Immediate &imm) { |
| assert(imm.is_int8()); |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x80); |
| EmitOperand(7, address); |
| EmitUint8(imm.value() & 0xFF); |
| } |
| |
| void AssemblerX86::testl(GPRRegister reg1, GPRRegister reg2) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x85); |
| EmitRegisterOperand(reg1, reg2); |
| } |
| |
| void AssemblerX86::testl(GPRRegister reg, const Immediate &immediate) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| // For registers that have a byte variant (EAX, EBX, ECX, and EDX) |
| // we only test the byte register to keep the encoding short. |
| if (immediate.is_uint8() && reg < 4) { |
| // Use zero-extended 8-bit immediate. |
| if (reg == RegX8632::Encoded_Reg_eax) { |
| EmitUint8(0xA8); |
| } else { |
| EmitUint8(0xF6); |
| EmitUint8(0xC0 + reg); |
| } |
| EmitUint8(immediate.value() & 0xFF); |
| } else if (reg == RegX8632::Encoded_Reg_eax) { |
| // Use short form if the destination is EAX. |
| EmitUint8(0xA9); |
| EmitImmediate(BrokenType, immediate); |
| } else { |
| EmitUint8(0xF7); |
| EmitOperand(0, Operand(reg)); |
| EmitImmediate(BrokenType, immediate); |
| } |
| } |
| |
| void AssemblerX86::And(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x22); |
| else |
| EmitUint8(0x23); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::And(Type Ty, GPRRegister dst, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x22); |
| else |
| EmitUint8(0x23); |
| EmitOperand(dst, address); |
| } |
| |
| void AssemblerX86::And(Type Ty, GPRRegister dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedType(Ty)) { |
| EmitComplexI8(4, Operand(dst), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 4, Operand(dst), imm); |
| } |
| |
| void AssemblerX86::Or(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x0A); |
| else |
| EmitUint8(0x0B); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::Or(Type Ty, GPRRegister dst, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x0A); |
| else |
| EmitUint8(0x0B); |
| EmitOperand(dst, address); |
| } |
| |
| void AssemblerX86::Or(Type Ty, GPRRegister dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedType(Ty)) { |
| EmitComplexI8(1, Operand(dst), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 1, Operand(dst), imm); |
| } |
| |
| void AssemblerX86::Xor(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x32); |
| else |
| EmitUint8(0x33); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::Xor(Type Ty, GPRRegister dst, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedType(Ty)) |
| EmitUint8(0x32); |
| else |
| EmitUint8(0x33); |
| EmitOperand(dst, address); |
| } |
| |
| void AssemblerX86::Xor(Type Ty, GPRRegister dst, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedType(Ty)) { |
| EmitComplexI8(6, Operand(dst), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 6, Operand(dst), imm); |
| } |
| |
| void AssemblerX86::add(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x02); |
| else |
| EmitUint8(0x03); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::add(Type Ty, GPRRegister reg, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x02); |
| else |
| EmitUint8(0x03); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::add(Type Ty, GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedArithType(Ty)) { |
| EmitComplexI8(0, Operand(reg), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 0, Operand(reg), imm); |
| } |
| |
| void AssemblerX86::adc(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x12); |
| else |
| EmitUint8(0x13); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::adc(Type Ty, GPRRegister dst, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x12); |
| else |
| EmitUint8(0x13); |
| EmitOperand(dst, address); |
| } |
| |
| void AssemblerX86::adc(Type Ty, GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedArithType(Ty)) { |
| EmitComplexI8(2, Operand(reg), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 2, Operand(reg), imm); |
| } |
| |
| void AssemblerX86::sub(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x2A); |
| else |
| EmitUint8(0x2B); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::sub(Type Ty, GPRRegister reg, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x2A); |
| else |
| EmitUint8(0x2B); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::sub(Type Ty, GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedArithType(Ty)) { |
| EmitComplexI8(5, Operand(reg), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 5, Operand(reg), imm); |
| } |
| |
| void AssemblerX86::sbb(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x1A); |
| else |
| EmitUint8(0x1B); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::sbb(Type Ty, GPRRegister dst, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x1A); |
| else |
| EmitUint8(0x1B); |
| EmitOperand(dst, address); |
| } |
| |
| void AssemblerX86::sbb(Type Ty, GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (isByteSizedArithType(Ty)) { |
| EmitComplexI8(3, Operand(reg), imm); |
| return; |
| } |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitComplex(Ty, 3, Operand(reg), imm); |
| } |
| |
| void AssemblerX86::cbw() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitOperandSizeOverride(); |
| EmitUint8(0x98); |
| } |
| |
| void AssemblerX86::cwd() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitOperandSizeOverride(); |
| EmitUint8(0x99); |
| } |
| |
| void AssemblerX86::cdq() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x99); |
| } |
| |
| void AssemblerX86::div(Type Ty, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitRegisterOperand(6, reg); |
| } |
| |
| void AssemblerX86::div(Type Ty, const Address &addr) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitOperand(6, addr); |
| } |
| |
| void AssemblerX86::idiv(Type Ty, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitRegisterOperand(7, reg); |
| } |
| |
| void AssemblerX86::idiv(Type Ty, const Address &addr) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitOperand(7, addr); |
| } |
| |
| void AssemblerX86::imull(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xAF); |
| EmitOperand(dst, Operand(src)); |
| } |
| |
| void AssemblerX86::imull(GPRRegister reg, const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x69); |
| EmitOperand(reg, Operand(reg)); |
| EmitImmediate(BrokenType, imm); |
| } |
| |
| void AssemblerX86::imull(GPRRegister reg, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xAF); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::imull(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF7); |
| EmitOperand(5, Operand(reg)); |
| } |
| |
| void AssemblerX86::imull(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF7); |
| EmitOperand(5, address); |
| } |
| |
| void AssemblerX86::mul(Type Ty, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitRegisterOperand(4, reg); |
| } |
| |
| void AssemblerX86::mul(Type Ty, const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitOperand(4, address); |
| } |
| |
| void AssemblerX86::incl(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x40 + reg); |
| } |
| |
| void AssemblerX86::incl(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitOperand(0, address); |
| } |
| |
| void AssemblerX86::decl(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x48 + reg); |
| } |
| |
| void AssemblerX86::decl(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitOperand(1, address); |
| } |
| |
| void AssemblerX86::shll(GPRRegister reg, const Immediate &imm) { |
| EmitGenericShift(4, reg, imm); |
| } |
| |
| void AssemblerX86::shll(GPRRegister operand, GPRRegister shifter) { |
| EmitGenericShift(4, Operand(operand), shifter); |
| } |
| |
| void AssemblerX86::shll(const Address &operand, GPRRegister shifter) { |
| EmitGenericShift(4, Operand(operand), shifter); |
| } |
| |
| void AssemblerX86::shrl(GPRRegister reg, const Immediate &imm) { |
| EmitGenericShift(5, reg, imm); |
| } |
| |
| void AssemblerX86::shrl(GPRRegister operand, GPRRegister shifter) { |
| EmitGenericShift(5, Operand(operand), shifter); |
| } |
| |
| void AssemblerX86::sarl(GPRRegister reg, const Immediate &imm) { |
| EmitGenericShift(7, reg, imm); |
| } |
| |
| void AssemblerX86::sarl(GPRRegister operand, GPRRegister shifter) { |
| EmitGenericShift(7, Operand(operand), shifter); |
| } |
| |
| void AssemblerX86::sarl(const Address &address, GPRRegister shifter) { |
| EmitGenericShift(7, Operand(address), shifter); |
| } |
| |
| void AssemblerX86::shld(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xA5); |
| EmitRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::shld(GPRRegister dst, GPRRegister src, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(imm.is_int8()); |
| EmitUint8(0x0F); |
| EmitUint8(0xA4); |
| EmitRegisterOperand(src, dst); |
| EmitUint8(imm.value() & 0xFF); |
| } |
| |
| void AssemblerX86::shld(const Address &operand, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xA5); |
| EmitOperand(src, Operand(operand)); |
| } |
| |
| void AssemblerX86::shrd(GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xAD); |
| EmitRegisterOperand(src, dst); |
| } |
| |
| void AssemblerX86::shrd(GPRRegister dst, GPRRegister src, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(imm.is_int8()); |
| EmitUint8(0x0F); |
| EmitUint8(0xAC); |
| EmitRegisterOperand(src, dst); |
| EmitUint8(imm.value() & 0xFF); |
| } |
| |
| void AssemblerX86::shrd(const Address &dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xAD); |
| EmitOperand(src, Operand(dst)); |
| } |
| |
| void AssemblerX86::neg(Type Ty, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitRegisterOperand(3, reg); |
| } |
| |
| void AssemblerX86::neg(Type Ty, const Address &addr) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xF6); |
| else |
| EmitUint8(0xF7); |
| EmitOperand(3, addr); |
| } |
| |
| void AssemblerX86::notl(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF7); |
| EmitUint8(0xD0 | reg); |
| } |
| |
| void AssemblerX86::bswap(Type Ty, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i32); |
| EmitUint8(0x0F); |
| EmitUint8(0xC8 | reg); |
| } |
| |
| void AssemblerX86::bsf(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i16 || Ty == IceType_i32); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| EmitUint8(0xBC); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::bsf(Type Ty, GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i16 || Ty == IceType_i32); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| EmitUint8(0xBC); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::bsr(Type Ty, GPRRegister dst, GPRRegister src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i16 || Ty == IceType_i32); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| EmitUint8(0xBD); |
| EmitRegisterOperand(dst, src); |
| } |
| |
| void AssemblerX86::bsr(Type Ty, GPRRegister dst, const Address &src) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(Ty == IceType_i16 || Ty == IceType_i32); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| EmitUint8(0xBD); |
| EmitOperand(dst, src); |
| } |
| |
| void AssemblerX86::bt(GPRRegister base, GPRRegister offset) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xA3); |
| EmitRegisterOperand(offset, base); |
| } |
| |
| void AssemblerX86::ret() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xC3); |
| } |
| |
| void AssemblerX86::ret(const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xC2); |
| assert(imm.is_uint16()); |
| EmitUint8(imm.value() & 0xFF); |
| EmitUint8((imm.value() >> 8) & 0xFF); |
| } |
| |
| void AssemblerX86::nop(int size) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| // There are nops up to size 15, but for now just provide up to size 8. |
| assert(0 < size && size <= MAX_NOP_SIZE); |
| switch (size) { |
| case 1: |
| EmitUint8(0x90); |
| break; |
| case 2: |
| EmitUint8(0x66); |
| EmitUint8(0x90); |
| break; |
| case 3: |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x00); |
| break; |
| case 4: |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x40); |
| EmitUint8(0x00); |
| break; |
| case 5: |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x44); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| break; |
| case 6: |
| EmitUint8(0x66); |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x44); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| break; |
| case 7: |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x80); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| break; |
| case 8: |
| EmitUint8(0x0F); |
| EmitUint8(0x1F); |
| EmitUint8(0x84); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| EmitUint8(0x00); |
| break; |
| default: |
| llvm_unreachable("Unimplemented"); |
| } |
| } |
| |
| void AssemblerX86::int3() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xCC); |
| } |
| |
| void AssemblerX86::hlt() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF4); |
| } |
| |
| void AssemblerX86::j(CondX86::BrCond condition, Label *label, bool near) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (label->IsBound()) { |
| static const int kShortSize = 2; |
| static const int kLongSize = 6; |
| intptr_t offset = label->Position() - buffer_.Size(); |
| assert(offset <= 0); |
| if (Utils::IsInt(8, offset - kShortSize)) { |
| EmitUint8(0x70 + condition); |
| EmitUint8((offset - kShortSize) & 0xFF); |
| } else { |
| EmitUint8(0x0F); |
| EmitUint8(0x80 + condition); |
| EmitInt32(offset - kLongSize); |
| } |
| } else if (near) { |
| EmitUint8(0x70 + condition); |
| EmitNearLabelLink(label); |
| } else { |
| EmitUint8(0x0F); |
| EmitUint8(0x80 + condition); |
| EmitLabelLink(label); |
| } |
| } |
| |
| void AssemblerX86::j(CondX86::BrCond condition, |
| const ConstantRelocatable *label) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0x80 + condition); |
| EmitFixup(DirectCallRelocation::create(this, FK_PcRel_4, label)); |
| EmitInt32(-4); |
| } |
| |
| void AssemblerX86::jmp(GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xFF); |
| EmitRegisterOperand(4, reg); |
| } |
| |
| void AssemblerX86::jmp(Label *label, bool near) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (label->IsBound()) { |
| static const int kShortSize = 2; |
| static const int kLongSize = 5; |
| intptr_t offset = label->Position() - buffer_.Size(); |
| assert(offset <= 0); |
| if (Utils::IsInt(8, offset - kShortSize)) { |
| EmitUint8(0xEB); |
| EmitUint8((offset - kShortSize) & 0xFF); |
| } else { |
| EmitUint8(0xE9); |
| EmitInt32(offset - kLongSize); |
| } |
| } else if (near) { |
| EmitUint8(0xEB); |
| EmitNearLabelLink(label); |
| } else { |
| EmitUint8(0xE9); |
| EmitLabelLink(label); |
| } |
| } |
| |
| void AssemblerX86::jmp(const ConstantRelocatable *label) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xE9); |
| EmitFixup(DirectCallRelocation::create(this, FK_PcRel_4, label)); |
| EmitInt32(-4); |
| } |
| |
| void AssemblerX86::mfence() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xAE); |
| EmitUint8(0xF0); |
| } |
| |
| void AssemblerX86::lock() { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0xF0); |
| } |
| |
| void AssemblerX86::cmpxchg(Type Ty, const Address &address, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xB0); |
| else |
| EmitUint8(0xB1); |
| EmitOperand(reg, address); |
| } |
| |
| void AssemblerX86::cmpxchg8b(const Address &address) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| EmitUint8(0x0F); |
| EmitUint8(0xC7); |
| EmitOperand(1, address); |
| } |
| |
| void AssemblerX86::xadd(Type Ty, const Address &addr, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| EmitUint8(0x0F); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0xC0); |
| else |
| EmitUint8(0xC1); |
| EmitOperand(reg, addr); |
| } |
| |
| void AssemblerX86::xchg(Type Ty, const Address &addr, GPRRegister reg) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| if (Ty == IceType_i16) |
| EmitOperandSizeOverride(); |
| if (isByteSizedArithType(Ty)) |
| EmitUint8(0x86); |
| else |
| EmitUint8(0x87); |
| EmitOperand(reg, addr); |
| } |
| |
| void AssemblerX86::Align(intptr_t alignment, intptr_t offset) { |
| assert(llvm::isPowerOf2_32(alignment)); |
| intptr_t pos = offset + buffer_.GetPosition(); |
| intptr_t mod = pos & (alignment - 1); |
| if (mod == 0) { |
| return; |
| } |
| intptr_t bytes_needed = alignment - mod; |
| while (bytes_needed > MAX_NOP_SIZE) { |
| nop(MAX_NOP_SIZE); |
| bytes_needed -= MAX_NOP_SIZE; |
| } |
| if (bytes_needed) { |
| nop(bytes_needed); |
| } |
| assert(((offset + buffer_.GetPosition()) & (alignment - 1)) == 0); |
| } |
| |
| void AssemblerX86::Bind(Label *label) { |
| intptr_t bound = buffer_.Size(); |
| assert(!label->IsBound()); // Labels can only be bound once. |
| while (label->IsLinked()) { |
| intptr_t position = label->LinkPosition(); |
| intptr_t next = buffer_.Load<int32_t>(position); |
| buffer_.Store<int32_t>(position, bound - (position + 4)); |
| label->position_ = next; |
| } |
| while (label->HasNear()) { |
| intptr_t position = label->NearPosition(); |
| intptr_t offset = bound - (position + 1); |
| assert(Utils::IsInt(8, offset)); |
| buffer_.Store<int8_t>(position, offset); |
| } |
| label->BindTo(bound); |
| } |
| |
| void AssemblerX86::EmitOperand(int rm, const Operand &operand) { |
| assert(rm >= 0 && rm < 8); |
| const intptr_t length = operand.length_; |
| assert(length > 0); |
| // Emit the ModRM byte updated with the given RM value. |
| assert((operand.encoding_[0] & 0x38) == 0); |
| EmitUint8(operand.encoding_[0] + (rm << 3)); |
| if (operand.fixup()) { |
| EmitFixup(operand.fixup()); |
| } |
| // Emit the rest of the encoded operand. |
| for (intptr_t i = 1; i < length; i++) { |
| EmitUint8(operand.encoding_[i]); |
| } |
| } |
| |
| void AssemblerX86::EmitImmediate(Type Ty, const Immediate &imm) { |
| if (Ty == IceType_i16) |
| EmitInt16(imm.value()); |
| else |
| EmitInt32(imm.value()); |
| } |
| |
| void AssemblerX86::EmitComplexI8(int rm, const Operand &operand, |
| const Immediate &immediate) { |
| assert(rm >= 0 && rm < 8); |
| assert(immediate.is_int8()); |
| if (operand.IsRegister(RegX8632::Encoded_Reg_eax)) { |
| // Use short form if the destination is al. |
| EmitUint8(0x04 + (rm << 3)); |
| EmitUint8(immediate.value() & 0xFF); |
| } else { |
| // Use sign-extended 8-bit immediate. |
| EmitUint8(0x80); |
| EmitOperand(rm, operand); |
| EmitUint8(immediate.value() & 0xFF); |
| } |
| } |
| |
| void AssemblerX86::EmitComplex(Type Ty, int rm, const Operand &operand, |
| const Immediate &immediate) { |
| assert(rm >= 0 && rm < 8); |
| if (immediate.is_int8()) { |
| // Use sign-extended 8-bit immediate. |
| EmitUint8(0x83); |
| EmitOperand(rm, operand); |
| EmitUint8(immediate.value() & 0xFF); |
| } else if (operand.IsRegister(RegX8632::Encoded_Reg_eax)) { |
| // Use short form if the destination is eax. |
| EmitUint8(0x05 + (rm << 3)); |
| EmitImmediate(Ty, immediate); |
| } else { |
| EmitUint8(0x81); |
| EmitOperand(rm, operand); |
| EmitImmediate(Ty, immediate); |
| } |
| } |
| |
| void AssemblerX86::EmitLabel(Label *label, intptr_t instruction_size) { |
| if (label->IsBound()) { |
| intptr_t offset = label->Position() - buffer_.Size(); |
| assert(offset <= 0); |
| EmitInt32(offset - instruction_size); |
| } else { |
| EmitLabelLink(label); |
| } |
| } |
| |
| void AssemblerX86::EmitLabelLink(Label *label) { |
| assert(!label->IsBound()); |
| intptr_t position = buffer_.Size(); |
| EmitInt32(label->position_); |
| label->LinkTo(position); |
| } |
| |
| void AssemblerX86::EmitNearLabelLink(Label *label) { |
| assert(!label->IsBound()); |
| intptr_t position = buffer_.Size(); |
| EmitUint8(0); |
| label->NearLinkTo(position); |
| } |
| |
| void AssemblerX86::EmitGenericShift(int rm, GPRRegister reg, |
| const Immediate &imm) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(imm.is_int8()); |
| if (imm.value() == 1) { |
| EmitUint8(0xD1); |
| EmitOperand(rm, Operand(reg)); |
| } else { |
| EmitUint8(0xC1); |
| EmitOperand(rm, Operand(reg)); |
| EmitUint8(imm.value() & 0xFF); |
| } |
| } |
| |
| void AssemblerX86::EmitGenericShift(int rm, const Operand &operand, |
| GPRRegister shifter) { |
| AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
| assert(shifter == RegX8632::Encoded_Reg_ecx); |
| EmitUint8(0xD3); |
| EmitOperand(rm, Operand(operand)); |
| } |
| |
| } // end of namespace x86 |
| } // end of namespace Ice |