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author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:49 +0000 |
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committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:49 +0000 |
commit | 631f060bb7fb457ff8720a690f4bdd378328cb2d (patch) | |
tree | 446b2d8859af0a266b57234778d06fde6b758d31 /MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm | |
parent | 7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69 (diff) | |
download | edk2-platforms-631f060bb7fb457ff8720a690f4bdd378328cb2d.tar.xz |
Add BaseMemoryLib optimized for DXE
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4036 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm')
-rw-r--r-- | MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm b/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm new file mode 100644 index 0000000000..b3b8b5d1f1 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/ZeroMem.asm @@ -0,0 +1,50 @@ +;------------------------------------------------------------------------------
+;
+; 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:
+;
+;------------------------------------------------------------------------------
+
+ .386
+ .model flat,C
+ .code
+
+;------------------------------------------------------------------------------
+; VOID *
+; InternalMemZeroMem (
+; IN VOID *Buffer,
+; IN UINTN Count
+; );
+;------------------------------------------------------------------------------
+InternalMemZeroMem PROC USES edi
+ xor eax, eax
+ mov edi, [esp + 8]
+ mov ecx, [esp + 12]
+ mov edx, ecx
+ shr ecx, 2
+ and edx, 3
+ push edi
+ rep stosd
+ mov ecx, edx
+ rep stosb
+ pop eax
+ ret
+InternalMemZeroMem ENDP
+
+ END
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