diff options
| author | Guo Mang <mang.guo@intel.com> | 2016-12-22 15:57:14 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:14:41 +0800 |
| commit | 1760cf81e4b1847c6823ea3514a78dd120e19b6e (patch) | |
| tree | 64a874b14050fe24d3bbc1bc13cd293abf8ae018 /Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c | |
| parent | 7f05fa00f73038b425002566d3afe6c3ade2ccdb (diff) | |
| download | edk2-platforms-1760cf81e4b1847c6823ea3514a78dd120e19b6e.tar.xz | |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c')
| -rw-r--r-- | Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c new file mode 100644 index 0000000000..3c3620ba60 --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32.c @@ -0,0 +1,50 @@ +/** @file
+ Calculate the quotient of a 64-bit integer by a 32-bit integer
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+
+
+/**
+ Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
+ generates a 64-bit unsigned result.
+
+ This function divides the 64-bit unsigned value Dividend by the 32-bit
+ unsigned value Divisor and generates a 64-bit unsigned quotient. This
+ function returns the 64-bit unsigned quotient.
+
+ @param Dividend A 64-bit unsigned value.
+ @param Divisor A 32-bit unsigned value.
+
+ @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+InternalMathDivU64x32 (
+ IN UINT64 Dividend,
+ IN UINT32 Divisor
+ )
+{
+ _asm {
+ mov eax, dword ptr [Dividend + 4]
+ mov ecx, Divisor
+ xor edx, edx
+ div ecx
+ push eax ; save quotient on stack
+ mov eax, dword ptr [Dividend]
+ div ecx
+ pop edx ; restore high-order dword of the quotient
+ }
+}
+
|