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55 lines
1.4 KiB
55 lines
1.4 KiB
4 years ago
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, 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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# ZeroMem.asm
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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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ASM_GLOBAL ASM_PFX(InternalMemZeroMem)
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#------------------------------------------------------------------------------
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# VOID *
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# EFIAPI
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# InternalMemZeroMem (
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# IN VOID *Buffer,
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# IN UINTN Count
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# );
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#------------------------------------------------------------------------------
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ASM_PFX(InternalMemZeroMem):
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push %edi
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movl 8(%esp), %edi
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movl 12(%esp), %ecx
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movl %ecx, %edx
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shrl $3, %ecx
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jz L_ZeroBytes
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pxor %mm0, %mm0
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L0:
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movq %mm0, (%edi)
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addl $8, %edi
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loop L0
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L_ZeroBytes:
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andl $7, %edx
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xorl %eax, %eax
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movl %edx, %ecx
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rep
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stosb
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movl 8(%esp), %eax
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pop %edi
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ret
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