RRotU64.c

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UINT64
EFIAPI
InternalMathRRotU64 (
  IN      UINT64  Operand,
  IN      UINTN   Count
  )
{
  _asm {
    mov     cl, byte ptr [Count]
    mov     eax, dword ptr [Operand + 0]
    mov     edx, dword ptr [Operand + 4]
    shrd    ebx, eax, cl
    shrd    eax, edx, cl
    rol     ebx, cl
    shrd    edx, ebx, cl
    test    cl, 32                      // Count >= 32?
    jz      L0
    mov     ecx, eax
    mov     eax, edx
    mov     edx, ecx
L0:
  }
}