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67 lines
2.0 KiB
67 lines
2.0 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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# SetMem.asm
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#
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# Abstract:
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#
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# SetMem 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(InternalMemSetMem)
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#------------------------------------------------------------------------------
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# VOID *
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# InternalMemSetMem (
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# IN VOID *Buffer,
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# IN UINTN Count,
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# IN UINT8 Value
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# )
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#------------------------------------------------------------------------------
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ASM_PFX(InternalMemSetMem):
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push %edi
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movb 16(%esp), %al
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movb %al, %ah
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shrdl $16, %eax, %edx
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shldl $16, %edx, %eax
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movl 12(%esp), %ecx # ecx <- Count
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movl 8(%esp), %edi # edi <- Buffer
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movl %ecx, %edx
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andl $7, %edx
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shrl $3, %ecx # # of Qwords to set
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jz L1
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addl $-16, %esp
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movq %mm0, (%esp) # save mm0
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movq %mm1, 8(%esp) # save mm1
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movd %eax, %mm0
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movd %eax, %mm1
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psllq $32, %mm0
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por %mm1, %mm0 # fill mm0 with 8 Value's
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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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movq (%esp), %mm0 # restore mm0
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movq 8(%esp), %mm1 # restore mm1
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addl $0x10, %esp # stack cleanup
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L1:
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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 # eax <- Buffer as return value
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pop %edi
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ret
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