MultU64x64.c

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UINT64
EFIAPI
InternalMathMultU64x64 (
  IN      UINT64  Multiplicand,
  IN      UINT64  Multiplier
  )
{
  _asm {
    mov     ebx, dword ptr [Multiplicand + 0]
    mov     edx, dword ptr [Multiplier + 0]
    mov     ecx, ebx
    mov     eax, edx
    imul    ebx, dword ptr [Multiplier + 4]
    imul    edx, dword ptr [Multiplicand + 4]
    add     ebx, edx
    mul     ecx
    add     edx, ebx
  }
}