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49 lines
1.3 KiB
49 lines
1.3 KiB
4 years ago
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/** @file
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Calculate the remainder of a 64-bit integer by a 32-bit integer
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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/**
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Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
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generates a 32-bit unsigned remainder.
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This function divides the 64-bit unsigned value Dividend by the 32-bit
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unsigned value Divisor and generates a 32-bit remainder. This function
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returns the 32-bit unsigned remainder.
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@param Dividend A 64-bit unsigned value.
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@param Divisor A 32-bit unsigned value.
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@return Dividend % Divisor
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**/
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UINT32
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EFIAPI
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InternalMathModU64x32 (
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IN UINT64 Dividend,
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IN UINT32 Divisor
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)
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{
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_asm {
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mov eax, dword ptr [Dividend + 4]
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mov ecx, Divisor
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xor edx, edx
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div ecx
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mov eax, dword ptr [Dividend + 0]
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div ecx
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mov eax, edx
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}
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}
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