MdeModulePkg: Apply uncrustify changes

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / RRotU64.c

/** @file\r
  64-bit right rotation for Ia32\r
\r
  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
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/**\r
  Rotates a 64-bit integer right between 0 and 63 bits, filling\r
  the high bits with the high low bits that were rotated.\r
\r
  This function rotates the 64-bit value Operand to the right by Count bits.\r
  The high Count bits are fill with the low Count bits of Operand. The rotated\r
  value is returned.\r
\r
  @param  Operand The 64-bit operand to rotate right.\r
  @param  Count   The number of bits to rotate right.\r
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  @return Operand >>> Count\r
\r
**/\r
UINT64\r
EFIAPI\r
InternalMathRRotU64 (\r
  IN      UINT64                    Operand,\r
  IN      UINTN                     Count\r
  )\r
{\r
  _asm {\r
    mov     cl, byte ptr [Count]\r
    mov     eax, dword ptr [Operand + 0]\r
    mov     edx, dword ptr [Operand + 4]\r
    shrd    ebx, eax, cl\r
    shrd    eax, edx, cl\r
    rol     ebx, cl\r
    shrd    edx, ebx, cl\r
    test    cl, 32                      // Count >= 32?\r
    jz      L0\r
    mov     ecx, eax\r
    mov     eax, edx\r
    mov     edx, ecx\r
L0:\r
  }\r
}\r
\r