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