diff options
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 2 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/MultU64x64.nasm | 46 |
2 files changed, 48 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 0ce0a087d0..936f07f609 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -297,6 +297,7 @@ Ia32/Monitor.asm | INTEL
Ia32/ModU64x32.nasm| INTEL
Ia32/ModU64x32.asm | INTEL
+ Ia32/MultU64x64.nasm| INTEL
Ia32/MultU64x64.asm | INTEL
Ia32/MultU64x32.asm | INTEL
Ia32/LShiftU64.asm | INTEL
@@ -354,6 +355,7 @@ Ia32/ModU64x32.nasm| GCC
Ia32/ModU64x32.S | GCC
Ia32/DivU64x32.S | GCC
+ Ia32/MultU64x64.nasm| GCC
Ia32/MultU64x64.S | GCC
Ia32/MultU64x32.S | GCC
Ia32/RRotU64.nasm| GCC
diff --git a/MdePkg/Library/BaseLib/Ia32/MultU64x64.nasm b/MdePkg/Library/BaseLib/Ia32/MultU64x64.nasm new file mode 100644 index 0000000000..c4cf7936f9 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/MultU64x64.nasm @@ -0,0 +1,46 @@ +;------------------------------------------------------------------------------
+;
+; 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.nasm
+;
+; Abstract:
+;
+; Calculate the product of a 64-bit integer and another 64-bit integer
+;
+;------------------------------------------------------------------------------
+
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; InternalMathMultU64x64 (
+; IN UINT64 Multiplicand,
+; IN UINT64 Multiplier
+; );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMathMultU64x64)
+ASM_PFX(InternalMathMultU64x64):
+ push 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
+ pop ebx
+ ret
+
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