Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...

[mirror_edk2.git] / OldMdePkg / Library / BaseLib / Ia32 / DivU64x32.c

/** @file\r
  Calculate the quotient of a 64-bit integer by a 32-bit integer\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
UINT64\r
EFIAPI\r
InternalMathDivU64x32 (\r
  IN      UINT64                    Dividend,\r
  IN      UINT32                    Divisor\r
  )\r
{\r
  _asm {\r
    mov     eax, dword ptr [Dividend + 4]\r
    mov     ecx, Divisor\r
    xor     edx, edx\r
    div     ecx\r
    push    eax                     ; save quotient on stack\r
    mov     eax, dword ptr [Dividend]\r
    div     ecx\r
    pop     edx                     ; restore high-order dword of the quotient\r
  }\r
}\r
\r