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- #
- # ConvertAsm.py: Automatically generated from SetMem.asm
- #
- #------------------------------------------------------------------------------
- #
- # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
- # 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:
- #
- # SetMem.S
- #
- # Abstract:
- #
- # SetMem function
- #
- # Notes:
- #
- #------------------------------------------------------------------------------
- #------------------------------------------------------------------------------
- # VOID *
- # EFIAPI
- # InternalMemSetMem (
- # IN VOID *Buffer,
- # IN UINTN Count,
- # IN UINT8 Value
- # )
- #------------------------------------------------------------------------------
- ASM_GLOBAL ASM_PFX(InternalMemSetMem)
- ASM_PFX(InternalMemSetMem):
- pushq %rdi
- movq %rcx, %rdi # rdi <- Buffer
- movb %r8b, %al # al <- Value
- movq %rdi, %r9 # r9 <- Buffer as return value
- xorq %rcx, %rcx
- subq %rdi, %rcx
- andq $15, %rcx # rcx + rdi aligns on 16-byte boundary
- jz L0
- cmpq %rdx, %rcx
- cmova %rdx, %rcx
- subq %rcx, %rdx
- rep stosb
- L0:
- movq %rdx, %rcx
- andq $15, %rdx
- shrq $4, %rcx
- jz L_SetBytes
- movb %al, %ah # ax <- Value repeats twice
- movdqa %xmm0, 0x10(%rsp) # save xmm0
- movd %eax, %xmm0 # xmm0[0..16] <- Value repeats twice
- pshuflw $0, %xmm0, %xmm0 # xmm0[0..63] <- Value repeats 8 times
- movlhps %xmm0, %xmm0 # xmm0 <- Value repeats 16 times
- L1:
- movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned
- add $16, %rdi
- loop L1
- mfence
- movdqa 0x10(%rsp), %xmm0 # restore xmm0
- L_SetBytes:
- movl %edx, %ecx # high 32 bits of rcx are always zero
- rep stosb
- movq %r9, %rax # rax <- Return value
- popq %rdi
- ret
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