diff options
| author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:13 +0000 |
|---|---|---|
| committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:13 +0000 |
| commit | 7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69 (patch) | |
| tree | 76d7394548723d66a7de91e6e79af3c444bd0c48 /MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm | |
| parent | 18be21dc5e39c7e8293f6795266662cf77c0b713 (diff) | |
| download | edk2-platforms-7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69.tar.xz | |
Add BaseMemoryLib optimized for PEI
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4035 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm new file mode 100644 index 0000000000..c01af8e6e4 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptPei/x64/ZeroMem.asm @@ -0,0 +1,47 @@ +;------------------------------------------------------------------------------
+;
+; 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
+ push rcx
+ xor rax, rax
+ mov rdi, rcx
+ mov rcx, rdx
+ shr rcx, 3
+ and rdx, 7
+ rep stosq
+ mov ecx, edx
+ rep stosb
+ pop rax
+ ret
+InternalMemZeroMem ENDP
+
+ END
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