diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/LShiftU64.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/LShiftU64.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/LShiftU64.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/LShiftU64.c deleted file mode 100644 index 57009af6f3..0000000000 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/LShiftU64.c +++ /dev/null @@ -1,74 +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:
-
- LShiftU64.c
-
-Abstract:
-
- 64-bit left shift function for IA-32
-
---*/
-
-#include "Tiano.h"
-
-UINT64
-LShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- )
-/*++
-
-Routine Description:
-
- This routine allows a 64 bit value to be left shifted by 32 bits and
- returns the shifted value.
- Count is valid up 63. (Only Bits 0-5 is valid for Count)
-
-Arguments:
-
- Operand - Value to be shifted
- Count - Number of times to shift left.
-
-Returns:
-
- Value shifted left identified by the Count.
-
---*/
-{
- __asm {
-
- mov eax, dword ptr Operand[0]
- mov edx, dword ptr Operand[4]
-
- ;
- ; CL is valid from 0 - 31. shld will move EDX:EAX by CL times but EAX is not touched
- ; For CL of 32 - 63, it will be shifted 0 - 31 so we will move eax to edx later.
- ;
- mov ecx, Count
- and ecx, 63
- shld edx, eax, cl
- shl eax, cl
-
- ;
- ; Since Count is 32 - 63, eax will have been shifted by 0 - 31
- ; If shifted by 32 or more, set lower 32 bits to zero.
- ;
- cmp ecx, 32
- jc short _LShiftU64_Done
-
- mov edx, eax
- xor eax, eax
-
-_LShiftU64_Done:
- }
-}
|