edk2/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/(Ia32|X64...

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseLib / Ia32 / MultU64x64.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\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
# Module Name:\r
#\r
#   MultU64x64.asm\r
#\r
# Abstract:\r
#\r
#   Calculate the product of a 64-bit integer and another 64-bit integer\r
#\r
#------------------------------------------------------------------------------\r
\r
#include <EdkIIGlueBase.h>\r
\r
.globl ASM_PFX(InternalMathMultU64x64)\r
\r
#------------------------------------------------------------------------------\r
# UINT64\r
# EFIAPI\r
# InternalMathMultU64x64 (\r
#   IN      UINT64                    Multiplicand,\r
#   IN      UINT64                    Multiplier\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(InternalMathMultU64x64):\r
    push    %ebx\r
    movl    8(%esp), %ebx\r
    movl    16(%esp), %edx\r
    movl    %ebx, %ecx\r
    movl    %edx, %eax\r
    imull   20(%esp), %ebx\r
    imull   12(%esp), %edx\r
    addl    %edx, %ebx\r
    mull    %ecx\r
    addl    %ebx, %edx\r
    pop     %ebx\r
    ret\r