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-rw-r--r--MdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.asm84
1 files changed, 0 insertions, 84 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.asm b/MdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.asm
deleted file mode 100644
index 84fad9190d2f..000000000000
--- a/MdePkg/Library/BaseMemoryLibSse2/Ia32/CopyMem.asm
+++ /dev/null
@@ -1,84 +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
- .xmm
- .code
-
-;------------------------------------------------------------------------------
-; VOID *
-; 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
-@@:
- xor ecx, ecx
- sub ecx, edi
- and ecx, 15 ; ecx + edi aligns on 16-byte boundary
- jz @F
- cmp ecx, edx
- cmova ecx, edx
- sub edx, ecx ; edx <- remaining bytes to copy
- rep movsb
-@@:
- mov ecx, edx
- and edx, 15
- shr ecx, 4 ; ecx <- # of DQwords to copy
- jz @CopyBytes
- add esp, -16
- movdqu [esp], xmm0 ; save xmm0
-@@:
- movdqu xmm0, [esi] ; esi may not be 16-bytes aligned
- movntdq [edi], xmm0 ; edi should be 16-bytes aligned
- add esi, 16
- add edi, 16
- loop @B
- mfence
- movdqu xmm0, [esp] ; restore xmm0
- add esp, 16 ; 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] ; eax <- Destination as return value
- ret
-InternalMemCopyMem ENDP
-
- END