mirror of https://github.com/acidanthera/audk.git
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/** @file
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Calculate the product of a 64-bit integer and another 64-bit integer
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Copyright (c) 2006 - 2007, Intel Corporation<BR>
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All rights reserved. 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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// Include common header file for this module.
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//
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UINT64
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EFIAPI
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InternalMathMultU64x64 (
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IN UINT64 Multiplicand,
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IN UINT64 Multiplier
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)
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{
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_asm {
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mov ebx, dword ptr [Multiplicand + 0]
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mov edx, dword ptr [Multiplier + 0]
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mov ecx, ebx
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mov eax, edx
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imul ebx, dword ptr [Multiplier + 4]
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imul edx, dword ptr [Multiplicand + 4]
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add ebx, edx
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mul ecx
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add edx, ebx
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}
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}
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