ChakraCore/lib/Runtime/Base/ThreadContextInfo.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

// Keep in sync with WellKnownType in scriptdirect.idl

typedef enum WellKnownHostType
{
    WellKnownHostType_HTMLAllCollection = 0,
    WellKnownHostType_Response = 1,
    WellKnownHostType_Last = WellKnownHostType_Response,
    WellKnownHostType_Invalid = WellKnownHostType_Last + 1
} WellKnownHostType;

class ThreadContextInfo
{
public:
    ThreadContextInfo();

#if ENABLE_NATIVE_CODEGEN
    intptr_t GetNullFrameDisplayAddr() const;
    intptr_t GetStrictNullFrameDisplayAddr() const;

    intptr_t GetAbsDoubleCstAddr() const;
    intptr_t GetAbsFloatCstAddr() const;
    intptr_t GetSgnDoubleBitCst() const;
    intptr_t GetSgnFloatBitCst() const;
    intptr_t GetMaskNegFloatAddr() const;
    intptr_t GetMaskNegDoubleAddr() const;
    intptr_t GetDoubleOnePointZeroAddr() const;
    intptr_t GetDoublePointFiveAddr() const;
    intptr_t GetFloatPointFiveAddr() const;
    intptr_t GetDoubleNegPointFiveAddr() const;
    intptr_t GetDoubleNegOneAddr() const;
    intptr_t GetFloatNegPointFiveAddr() const;
    intptr_t GetDoubleTwoToFractionAddr() const;
    intptr_t GetFloatTwoToFractionAddr() const;
    intptr_t GetDoubleNegTwoToFractionAddr() const;
    intptr_t GetDoubleNaNAddr() const;
    intptr_t GetDoubleIntMaxPlusOneAddr() const;
    intptr_t GetDoubleUintMaxPlusOneAddr() const;
    intptr_t GetDoubleIntMinMinusOneAddr() const;
    intptr_t GetFloatNaNAddr() const;
    intptr_t GetFloatNegTwoToFractionAddr() const;
    intptr_t GetDoubleZeroAddr() const;
    intptr_t GetFloatZeroAddr() const;
    intptr_t GetDoubleIntMinAddr() const;
    intptr_t GetDoubleTwoTo31Addr() const;

    intptr_t GetUIntConvertConstAddr() const;
    intptr_t GetUint8ClampedArraySetItemAddr() const;
    intptr_t GetConstructorCacheDefaultInstanceAddr() const;
    intptr_t GetJavascriptObjectNewInstanceAddr() const;
    intptr_t GetJavascriptArrayNewInstanceAddr() const;
    intptr_t GetNativeFloatArrayMissingItemAddr() const;
    intptr_t GetMantissaMaskAddr() const;
    intptr_t GetExponentMaskAddr() const;

#if _M_IX86 || _M_AMD64
    intptr_t GetX86AbsMaskF4Addr() const;
    intptr_t GetX86AbsMaskD2Addr() const;
    intptr_t GetX86NegMaskF4Addr() const;
    intptr_t GetX86NegMaskD2Addr() const;
    intptr_t GetX86AllNegOnesAddr() const;
    intptr_t GetX86AllNegOnesF4Addr() const;
    intptr_t GetX86AllZerosAddr() const;
    intptr_t GetX86AllOnesF4Addr() const;
    intptr_t GetX86LowBytesMaskAddr() const;
    intptr_t GetX86HighBytesMaskAddr() const;
    intptr_t GetX86DoubleWordSignBitsAddr() const;
    intptr_t GetX86WordSignBitsAddr() const;
    intptr_t GetX86ByteSignBitsAddr() const;
    intptr_t GetX86TwoPower32F4Addr() const;
    intptr_t GetX86TwoPower31F4Addr() const;
    intptr_t GetX86TwoPower31I4Addr() const;
    intptr_t GetX86NegTwoPower31F4Addr() const;
    intptr_t GetX86FourLanesMaskAddr(uint8 minorityLane) const;
#endif

    intptr_t GetStringReplaceNameAddr() const;
    intptr_t GetStringMatchNameAddr() const;
#endif

    void SetValidCallTargetForCFG(PVOID callTargetAddress, bool isSetValid = true);
    void ResetIsAllJITCodeInPreReservedRegion();
    bool IsAllJITCodeInPreReservedRegion() const;

    virtual HANDLE GetProcessHandle() const = 0;

    virtual bool IsThreadBound() const = 0;

    virtual size_t GetScriptStackLimit() const = 0;

    virtual intptr_t GetThreadStackLimitAddr() const = 0;

    virtual intptr_t GetDisableImplicitFlagsAddr() const = 0;
    virtual intptr_t GetImplicitCallFlagsAddr() const = 0;

    virtual ptrdiff_t GetChakraBaseAddressDifference() const = 0;
    virtual ptrdiff_t GetCRTBaseAddressDifference() const = 0;

#if ENABLE_NATIVE_CODEGEN
#if defined(ENABLE_WASM_SIMD)
    virtual intptr_t GetSimdTempAreaAddr(uint8 tempIndex) const = 0;
#endif
    virtual intptr_t GetBailOutRegisterSaveSpaceAddr() const = 0;
#endif

    virtual bool IsNumericProperty(Js::PropertyId propertyId) = 0;

    bool CanBeFalsy(Js::TypeId typeId) { return typeId == this->wellKnownHostTypeIds[WellKnownHostType_HTMLAllCollection]; }

    bool IsCFGEnabled();
    bool IsClosed();

#if defined(ENABLE_GLOBALIZATION) && defined(_CONTROL_FLOW_GUARD)
    Js::DelayLoadWinCoreMemory * GetWinCoreMemoryLibrary();
    Js::DelayLoadWinCoreProcessThreads * GetWinCoreProcessThreads();

    Js::DelayLoadWinCoreMemory m_delayLoadWinCoreMemoryLibrary;
    Js::DelayLoadWinCoreProcessThreads m_delayLoadWinCoreProcessThreads;
#endif

protected:
    class AutoCloseHandle
    {
    public:
        AutoCloseHandle(HANDLE handle) : handle(handle) { Assert(this->handle != GetCurrentProcess()); }
        ~AutoCloseHandle() { CloseHandle(this->handle); }
        HANDLE GetHandle() const { return this->handle; }
    private:
        HANDLE handle;
    };

    Js::TypeId wellKnownHostTypeIds[WellKnownHostType_Last + 1];

    bool m_isAllJITCodeInPreReservedRegion;
    bool m_isClosed;

};

#pragma warning(push)
#pragma warning(error: 4440)
CLANG_WNO_BEGIN("-Wignored-attributes")
// MSVC will give warning C4440 in case of calling convention redefinition
template<typename F> void EnsureStdcall(F*) { typedef F __stdcall* T; }
template<typename F> void EnsureCdecl(F*) { typedef F __cdecl* T; }
CLANG_WNO_END
#pragma warning(pop)
template<typename T>
uintptr_t ShiftCdeclAddr(const ThreadContextInfo*const context, T* address)
{
    EnsureCdecl(address);
    return ShiftAddr(context, (uintptr_t)address);
}

template<typename T>
uintptr_t ShiftStdcallAddr(const ThreadContextInfo*const context, T* address)
{
    EnsureStdcall(address);
    return ShiftAddr(context, (uintptr_t)address);
}

template<typename T>
uintptr_t ShiftAddr(const ThreadContextInfo*const context, T* address)
{
    return ShiftAddr(context, (uintptr_t)address);
}

uintptr_t ShiftAddr(const ThreadContextInfo*const context, uintptr_t address);