From 7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69 Mon Sep 17 00:00:00 2001 From: mdkinney Date: Sat, 6 Oct 2007 23:23:13 +0000 Subject: Add BaseMemoryLib optimized for PEI git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4035 6f19259b-4bc3-4df7-8a09-765794883524 --- MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S | 49 +++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S (limited to 'MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S') diff --git a/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S new file mode 100644 index 0000000000..8465d7cf65 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/ZeroMem.S @@ -0,0 +1,49 @@ +#------------------------------------------------------------------------------ +# +# 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: +# +#------------------------------------------------------------------------------ + +.globl _InternalMemZeroMem + +#------------------------------------------------------------------------------ +# VOID * +# InternalMemZeroMem ( +# IN VOID *Buffer, +# IN UINTN Count +# ); +#------------------------------------------------------------------------------ +_InternalMemZeroMem: + push %edi + xorl %eax,%eax + movl 8(%esp),%edi + movl 12(%esp),%ecx + movl %ecx,%edx + shrl $2,%ecx + andl $3,%edx + pushl %edi + rep + stosl + movl %edx,%ecx + rep + stosb + popl %eax + pop %edi + ret -- cgit v1.2.3