9344f09215
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/** @file
|
|
Calculate the product of a 64-bit integer and another 64-bit integer
|
|
|
|
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
|
|
|
|
|
|
/**
|
|
Multiplies a 64-bit unsigned integer by a 64-bit unsigned integer
|
|
and generates a 64-bit unsigned result.
|
|
|
|
This function multiplies the 64-bit unsigned value Multiplicand by the 64-bit
|
|
unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
|
|
bit unsigned result is returned.
|
|
|
|
@param Multiplicand A 64-bit unsigned value.
|
|
@param Multiplier A 64-bit unsigned value.
|
|
|
|
@return Multiplicand * Multiplier
|
|
|
|
**/
|
|
UINT64
|
|
EFIAPI
|
|
InternalMathMultU64x64 (
|
|
IN UINT64 Multiplicand,
|
|
IN UINT64 Multiplier
|
|
)
|
|
{
|
|
_asm {
|
|
mov ebx, dword ptr [Multiplicand + 0]
|
|
mov edx, dword ptr [Multiplier + 0]
|
|
mov ecx, ebx
|
|
mov eax, edx
|
|
imul ebx, dword ptr [Multiplier + 4]
|
|
imul edx, dword ptr [Multiplicand + 4]
|
|
add ebx, edx
|
|
mul ecx
|
|
add edx, ebx
|
|
}
|
|
}
|
|
|