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| ;------------------------------------------------------------------------------
| ;
| ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
| ; SPDX-License-Identifier: BSD-2-Clause-Patent
| ;
| ; Module Name:
| ;
| ; SetMem64.nasm
| ;
| ; Abstract:
| ;
| ; SetMem64 function
| ;
| ; Notes:
| ;
| ;------------------------------------------------------------------------------
|
| DEFAULT REL
| SECTION .text
|
| ;------------------------------------------------------------------------------
| ; VOID *
| ; InternalMemSetMem64 (
| ; IN VOID *Buffer,
| ; IN UINTN Count,
| ; IN UINT64 Value
| ; )
| ;------------------------------------------------------------------------------
| global ASM_PFX(InternalMemSetMem64)
| ASM_PFX(InternalMemSetMem64):
| mov rax, rcx ; rax <- Buffer
| xchg rcx, rdx ; rcx <- Count & rdx <- Buffer
| test dl, 8
| movq xmm0, r8
| jz .0
| mov [rdx], r8
| add rdx, 8
| dec rcx
| .0:
| push rbx
| mov rbx, rcx
| and rbx, 7
| shr rcx, 3
| jz @SetQwords
| movlhps xmm0, xmm0
| .1:
| movntdq [rdx], xmm0
| movntdq [rdx + 16], xmm0
| movntdq [rdx + 32], xmm0
| movntdq [rdx + 48], xmm0
| lea rdx, [rdx + 64]
| loop .1
| mfence
| @SetQwords:
| push rdi
| mov rcx, rbx
| mov rax, r8
| mov rdi, rdx
| rep stosq
| pop rdi
| .2:
| pop rbx
| ret
|
|
|
