EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/MultU64x32.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2006, Intel Corporation
   4 # All rights reserved. This program and the accompanying materials
   5 # are licensed and made available under the terms and conditions of the BSD License
   6 # which accompanies this distribution.  The full text of the license may be found at
   7 # http://opensource.org/licenses/bsd-license.php
   8 #
   9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 # Module Name:
  13 #
  14 #   MultU64x32.asm
  15 #
  16 # Abstract:
  17 #
  18 #   Calculate the product of a 64-bit integer and a 32-bit integer
  19 #
  20 #------------------------------------------------------------------------------
  21
  22 #include <EdkIIGlueBase.h>
  23
  24     .386:
  25     .code:
  26
  27 .globl ASM_PFX(InternalMathMultU64x32)
  28
  29 #------------------------------------------------------------------------------
  30 # UINT64
  31 # EFIAPI
  32 # InternalMathMultU64x32 (
  33 #   IN      UINT64                    Multiplicand,
  34 #   IN      UINT32                    Multiplier
  35 #   );
  36 #------------------------------------------------------------------------------
  37 ASM_PFX(InternalMathMultU64x32):
  38     movl    12(%esp), %ecx
  39     movl    %ecx, %eax
  40     imull   8(%esp), %ecx
  41     mull    0x4(%esp)
  42     addl    %ecx, %edx
  43     ret