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| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-23 09:54:31 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-23 09:54:31 +0000 |
| commit | c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7 (patch) | |
| tree | b648d069cd1eadf70a30e1445dd40268b1f22397 /MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm | |
| parent | b2570da8b7d2154b2d1344f2eb25acac9e6b6578 (diff) | |
| download | edk2-platforms-c5ecf6c197a7105f2a5d09ddf5ff4a78090584c7.tar.xz | |
Import BaseMemoryLibMmx.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3407 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm new file mode 100644 index 0000000000..e9035a3c14 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibMmx/X64/ZeroMem.asm @@ -0,0 +1,54 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation
+; All rights reserved. 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:
+;
+; ZeroMem.asm
+;
+; Abstract:
+;
+; ZeroMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ .code
+
+;------------------------------------------------------------------------------
+; VOID *
+; InternalMemZeroMem (
+; IN VOID *Buffer,
+; IN UINTN Count
+; );
+;------------------------------------------------------------------------------
+InternalMemZeroMem PROC USES rdi
+ mov rdi, rcx
+ mov rcx, rdx
+ mov r8, rdi
+ and edx, 7
+ shr rcx, 3
+ jz @ZeroBytes
+ DB 0fh, 0efh, 0c0h ; pxor mm0, mm0
+@@:
+ DB 0fh, 0e7h, 7 ; movntq [rdi], mm0
+ add rdi, 8
+ loop @B
+ DB 0fh, 0aeh, 0f0h ; mfence
+@ZeroBytes:
+ xor eax, eax
+ mov ecx, edx
+ rep stosb
+ mov rax, r8
+ ret
+InternalMemZeroMem ENDP
+
+ END
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