1 /** @file
2 Calculate the remainder of a 64-bit integer by a 32-bit integer
3
4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php.
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15
16
17
18 /**
19 Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
20 generates a 32-bit unsigned remainder.
21
22 This function divides the 64-bit unsigned value Dividend by the 32-bit
23 unsigned value Divisor and generates a 32-bit remainder. This function
24 returns the 32-bit unsigned remainder.
25
26 @param Dividend A 64-bit unsigned value.
27 @param Divisor A 32-bit unsigned value.
28
29 @return Dividend % Divisor
30
31 **/
32 UINT32
33 EFIAPI
InternalMathModU64x32(IN UINT64 Dividend,IN UINT32 Divisor)34 InternalMathModU64x32 (
35 IN UINT64 Dividend,
36 IN UINT32 Divisor
37 )
38 {
39 _asm {
40 mov eax, dword ptr [Dividend + 4]
41 mov ecx, Divisor
42 xor edx, edx
43 div ecx
44 mov eax, dword ptr [Dividend + 0]
45 div ecx
46 mov eax, edx
47 }
48 }
49