#ifndef _NTRTL_H
#if defined(_M_AMD64)

// returns constant 0xf0e0d0c0a0908070 (dmex)
NTSYSAPI
ULONG64
NTAPI
RtlInitializeContext(
    _Reserved_ HANDLE Reserved,
    _Out_ PCONTEXT Context,
    _In_opt_ PVOID Parameter,
    _In_opt_ PVOID InitialPc,
    _In_opt_ PVOID InitialSp
    );

#endif
#endif
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#ifndef _NTRTL_H
#if defined(_M_AMD64)
// ...
#else

// returns status of NtWriteVirtualMemory (dmex)
NTSYSAPI
NTSTATUS
NTAPI
RtlInitializeContext(
    _In_ HANDLE ProcessHandle,
    _Out_ PCONTEXT Context,
    _In_opt_ PVOID Parameter,
    _In_opt_ PVOID InitialPc,
    _In_opt_ PVOID InitialSp
    );

#endif
#endif
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