ChakraCore/lib/Runtime/ByteCode/AsmJsByteCodeWriter.h

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
#pragma once

#ifndef TEMP_DISABLE_ASMJS
namespace Js
{
    struct AsmJsByteCodeWriter : public ByteCodeWriter
    {
    private:
        using ByteCodeWriter::MarkLabel;

    public:
        void InitData        ( ArenaAllocator* alloc, long initCodeBufferSize );
        void EmptyAsm        ( OpCodeAsmJs op );
        void Conv            ( OpCodeAsmJs op, RegSlot R0, RegSlot R1 );
        void AsmInt1Const1   ( OpCodeAsmJs op, RegSlot R0, int C1 );
        void AsmReg1         ( OpCodeAsmJs op, RegSlot R0 );
        void AsmReg2         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1 );
        void AsmReg3         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2 );
        void AsmReg4         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3 );
        void AsmReg5         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4 );
        void AsmReg6         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4, RegSlot R5 );
        void AsmReg7         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4, RegSlot R5, RegSlot R6 );
        void AsmReg2IntConst1( OpCodeAsmJs op, RegSlot R0, RegSlot R1, int C2);
        void AsmBr           ( ByteCodeLabel labelID, OpCodeAsmJs op = OpCodeAsmJs::AsmBr );
        void AsmBrReg1       ( OpCodeAsmJs op, ByteCodeLabel labelID, RegSlot R1 );
        void AsmBrReg2       ( OpCodeAsmJs op, ByteCodeLabel labelID, RegSlot R1, RegSlot R2 );
        void AsmStartCall    ( OpCodeAsmJs op, ArgSlot ArgCount, bool isPatching = false);
        void AsmCall         ( OpCodeAsmJs op, RegSlot returnValueRegister, RegSlot functionRegister, ArgSlot givenArgCount, AsmJsRetType retType );
        void AsmSlot         ( OpCodeAsmJs op, RegSlot value, RegSlot instance, int32 slotId );
        void AsmTypedArr     ( OpCodeAsmJs op, RegSlot value, uint32 slotIndex, ArrayBufferView::ViewType viewType );
        void AsmSimdTypedArr ( OpCodeAsmJs op, RegSlot value, uint32 slotIndex, uint8 dataWidth, ArrayBufferView::ViewType viewType );

        void MarkAsmJsLabel  ( ByteCodeLabel labelID );
        void AsmJsUnsigned1  ( OpCodeAsmJs op, uint C1 );
        uint EnterLoop       ( ByteCodeLabel loopEntrance );
        void ExitLoop        ( uint loopId );

    private:
        template <typename SizePolicy> bool TryWriteAsmReg1         ( OpCodeAsmJs op, RegSlot R0 );
        template <typename SizePolicy> bool TryWriteAsmReg2         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1 );
        template <typename SizePolicy> bool TryWriteAsmReg3         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2 );
        template <typename SizePolicy> bool TryWriteAsmReg4         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3 );
        template <typename SizePolicy> bool TryWriteAsmReg5         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4 );
        template <typename SizePolicy> bool TryWriteAsmReg6         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4, RegSlot R5 );
        template <typename SizePolicy> bool TryWriteAsmReg7         ( OpCodeAsmJs op, RegSlot R0, RegSlot R1, RegSlot R2, RegSlot R3, RegSlot R4, RegSlot R5, RegSlot R6 );
        template <typename SizePolicy> bool TryWriteAsmReg2IntConst1( OpCodeAsmJs op, RegSlot R0, RegSlot R1, int C2 );
        template <typename SizePolicy> bool TryWriteInt1Const1      ( OpCodeAsmJs op, RegSlot R0, int C1 );
        template <typename SizePolicy> bool TryWriteAsmBrReg1       ( OpCodeAsmJs op, ByteCodeLabel labelID, RegSlot R1 );
        template <typename SizePolicy> bool TryWriteAsmBrReg2       ( OpCodeAsmJs op, ByteCodeLabel labelID, RegSlot R1, RegSlot R2 );
        template <typename SizePolicy> bool TryWriteAsmCall         ( OpCodeAsmJs op, RegSlot returnValueRegister, RegSlot functionRegister, ArgSlot givenArgCount, AsmJsRetType retType );
        template <typename SizePolicy> bool TryWriteAsmSlot         ( OpCodeAsmJs op, RegSlot value, RegSlot instance, int32 slotId );
        template <typename SizePolicy> bool TryWriteAsmTypedArr     ( OpCodeAsmJs op, RegSlot value, uint32 slotIndex, ArrayBufferView::ViewType viewType );
        template <typename SizePolicy> bool TryWriteAsmSimdTypedArr ( OpCodeAsmJs op, RegSlot value, uint32 slotIndex, uint8 dataWidth, ArrayBufferView::ViewType viewType );
        template <typename SizePolicy> bool TryWriteAsmJsUnsigned1  ( OpCodeAsmJs op, uint C1 );

        void AddJumpOffset( Js::OpCodeAsmJs op, ByteCodeLabel labelId, uint fieldByteOffset );
    };
}
#endif