| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; SetMem32.nasm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; SetMem32 function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| DEFAULT REL | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; VOID * | |
| ; InternalMemSetMem32 ( | |
| ; IN VOID *Buffer, | |
| ; IN UINTN Count, | |
| ; IN UINT32 Value | |
| ; ) | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(InternalMemSetMem32) | |
| ASM_PFX(InternalMemSetMem32): | |
| movq mm0, r8 | |
| mov rax, rcx ; rax <- Buffer | |
| xchg rcx, rdx ; rcx <- Count rdx <- Buffer | |
| shr rcx, 1 ; rcx <- # of qwords to set | |
| jz @SetDwords | |
| pshufw mm0, mm0, 44h | |
| .0: | |
| movntq [rdx], mm0 | |
| lea rdx, [rdx + 8] ; use "lea" to avoid flag changes | |
| loop .0 | |
| mfence | |
| @SetDwords: | |
| jnc .1 | |
| movd [rdx], mm0 | |
| .1: | |
| ret | |