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/MultU64x64.asm | |
| 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/MultU64x64.asm')
| -rw-r--r-- | Core/MdePkg/Library/BaseLib/Ia32/MultU64x64.asm | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/MultU64x64.asm b/Core/MdePkg/Library/BaseLib/Ia32/MultU64x64.asm new file mode 100644 index 0000000000..061301f559 --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/Ia32/MultU64x64.asm @@ -0,0 +1,47 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, 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.
+;
+; Module Name:
+;
+; MultU64x64.asm
+;
+; Abstract:
+;
+; Calculate the product of a 64-bit integer and another 64-bit integer
+;
+;------------------------------------------------------------------------------
+
+ .386
+ .model flat,C
+ .code
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; InternalMathMultU64x64 (
+; IN UINT64 Multiplicand,
+; IN UINT64 Multiplier
+; );
+;------------------------------------------------------------------------------
+InternalMathMultU64x64 PROC USES ebx
+ mov ebx, [esp + 8] ; ebx <- M1[0..31]
+ mov edx, [esp + 16] ; edx <- M2[0..31]
+ mov ecx, ebx
+ mov eax, edx
+ imul ebx, [esp + 20] ; ebx <- M1[0..31] * M2[32..63]
+ imul edx, [esp + 12] ; edx <- M1[32..63] * M2[0..31]
+ add ebx, edx ; carries are abandoned
+ mul ecx ; edx:eax <- M1[0..31] * M2[0..31]
+ add edx, ebx ; carries are abandoned
+ ret
+InternalMathMultU64x64 ENDP
+
+ END
|