2b53e39435
Signed-off-by: Tian, Hot <hot.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15172 6f19259b-4bc3-4df7-8a09-765794883524
46 lines
1.3 KiB
ArmAsm
46 lines
1.3 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# EfiZeroMemRep4.S
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#
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# Abstract:
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#
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# ZeroMem function
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#
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# Notes:
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#
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#------------------------------------------------------------------------------
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#include <EfiBind.h>
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.code:
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.globl ASM_PFX(EfiCommonLibZeroMem)
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#------------------------------------------------------------------------------
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# VOID
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# EfiCommonLibZeroMem (
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# IN VOID *Buffer,
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# IN UINTN Size
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# );
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#------------------------------------------------------------------------------
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ASM_PFX(EfiCommonLibZeroMem):
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push %rdi
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xor %rax,%rax
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mov %rcx,%rdi
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mov %rdx,%rcx
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shr $0x2,%rcx
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and $0x3,%rdx
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rep stos %eax,%es:(%rdi)
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mov %rdx,%rcx
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rep stos %al,%es:(%rdi)
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pop %rdi
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retq
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