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#
# ConvertAsm.py: Automatically generated from SetMem.asm
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006, Intel Corporation
# All rights reserved. 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
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
.globl ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
push rdi
mov rdi, rcx # rdi <- Buffer
mov al, r8b # al <- Value
mov r9, rdi # r9 <- Buffer as return value
xor rcx, rcx
sub rcx, rdi
and rcx, 15 # rcx + rdi aligns on 16-byte boundary
jz L0
cmp rcx, rdx
cmova rcx, rdx
sub rdx, rcx
rep stosb
L0:
mov rcx, rdx
and rdx, 15
shr rcx, 4
jz L_SetBytes
mov ah, al # ax <- Value repeats twice
movdqa [rsp + 0x10], xmm0 # save xmm0
movd xmm0, eax # xmm0[0..16] <- Value repeats twice
pshuflw xmm0, xmm0, 0 # xmm0[0..63] <- Value repeats 8 times
movlhps xmm0, xmm0 # xmm0 <- Value repeats 16 times
L1:
movntdq [rdi], xmm0 # rdi should be 16-byte aligned
add rdi, 16
loop L1
mfence
movdqa xmm0, [rsp + 0x10] # restore xmm0
L_SetBytes:
mov ecx, edx # high 32 bits of rcx are always zero
rep stosb
mov rax, r9 # rax <- Return value
pop rdi
ret
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