1.Fix .global issue in GAS (EdkT207).

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / MultU64x32.c

/** @file\r
  Calculate the product of a 64-bit integer and a 32-bit integer\r
\r
  Copyright (c) 2006, 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
#if _MSC_EXTENSIONS\r
\r
UINT64\r
EFIAPI\r
InternalMathMultU64x32 (\r
  IN      UINT64                    Multiplicand,\r
  IN      UINT32                    Multiplier\r
  )\r
{\r
  _asm {\r
    mov     ecx, Multiplier\r
    mov     eax, ecx\r
    imul    ecx, dword ptr [Multiplicand + 4]  // overflow not detectable\r
    mul     dword ptr [Multiplicand + 0]\r
    add     edx, ecx\r
  }\r
}\r
\r
#endif\r