diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Log2.asm')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Log2.asm | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Log2.asm b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Log2.asm deleted file mode 100644 index cf932f525f..0000000000 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Log2.asm +++ /dev/null @@ -1,81 +0,0 @@ -;/*++
-;
-;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:
-;
-; Log2.c
-;
-;Abstract:
-;
-; 64-bit integer logarithm function for IA-32
-;
-;--*/
-;
-;---------------------------------------------------------------------------
- .686
- .model flat,C
- .code
-
-;---------------------------------------------------------------------------
-
-;UINT8
-;Log2 (
-; IN UINT64 Operand
-; )
-;/*++
-;
-;Routine Description:
-;
-; Calculates and floors logarithms based on 2
-;
-;Arguments:
-;
-; Operand - value to calculate logarithm
-;
-;Returns:
-;
-; The largest integer that is less than or equal
-; to the logarithm of Operand based on 2
-;
-;--*/
-Log2 PROC
- mov ecx, 64
-
- cmp dword ptr [esp + 4], 0 ; (UINT32 *(&Operand))
- jne _Log2_Wend
- cmp dword ptr [esp + 8], 0 ; (UINT32 *(&Operand)) + 1
- jne _Log2_Wend
- mov cl, 0FFH
- jmp _Log2_Done
-
-_Log2_Wend:
- dec ecx
- cmp ecx, 32
- jae _Log2_Higher
- bt [esp + 4], ecx ; (UINT32 *(&Operand))
- jmp _Log2_Bit
-
-_Log2_Higher:
- mov eax, ecx
- sub eax, 32
- bt [esp + 8], eax ; (UINT32 *(&Operand)) + 1
-
-_Log2_Bit:
- jc _Log2_Done
- jmp _Log2_Wend
-
-_Log2_Done:
- mov al, cl
-
- ret
-
- Log2 ENDP
- END
|