diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm')
-rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm b/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm deleted file mode 100644 index 38e1da7d81..0000000000 --- a/MdePkg/Library/BaseMemoryLibMmx/Ia32/CopyMem.asm +++ /dev/null @@ -1,77 +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:
-;
-; CopyMem.asm
-;
-; Abstract:
-;
-; CopyMem function
-;
-; Notes:
-;
-;------------------------------------------------------------------------------
-
- .686
- .model flat,C
- .mmx
- .code
-
-;------------------------------------------------------------------------------
-; VOID *
-; EFIAPI
-; InternalMemCopyMem (
-; IN VOID *Destination,
-; IN VOID *Source,
-; IN UINTN Count
-; );
-;------------------------------------------------------------------------------
-InternalMemCopyMem PROC USES esi edi
- mov esi, [esp + 16] ; esi <- Source
- mov edi, [esp + 12] ; edi <- Destination
- mov edx, [esp + 20] ; edx <- Count
- lea eax, [esi + edx - 1] ; eax <- End of Source
- cmp esi, edi
- jae @F
- cmp eax, edi ; Overlapped?
- jae @CopyBackward ; Copy backward if overlapped
-@@:
- mov ecx, edx
- and edx, 7
- shr ecx, 3 ; ecx <- # of Qwords to copy
- jz @CopyBytes
- push eax
- push eax
- movq [esp], mm0 ; save mm0
-@@:
- movq mm0, [esi]
- movq [edi], mm0
- add esi, 8
- add edi, 8
- loop @B
- movq mm0, [esp] ; restore mm0
- pop ecx ; stack cleanup
- pop ecx ; stack cleanup
- jmp @CopyBytes
-@CopyBackward:
- mov esi, eax ; esi <- Last byte in Source
- lea edi, [edi + edx - 1] ; edi <- Last byte in Destination
- std
-@CopyBytes:
- mov ecx, edx
- rep movsb
- cld
- mov eax, [esp + 12]
- ret
-InternalMemCopyMem ENDP
-
- END
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