audk/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/X64/EfiSetMemRep4.S

55 lines
1.5 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2008, 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:
#
# EfiSetMemRep4.S
#
# Abstract:
#
# SetMem function
#
# Notes:
#
#------------------------------------------------------------------------------
#include <EfiBind.h>
.code:
.globl ASM_PFX(EfiCommonLibCopyMem)
#------------------------------------------------------------------------------
# VOID
# EfiCommonLibSetMem (
# OUT VOID *Buffer,
# IN UINTN Size,
# IN UINT8 Value
# );
#------------------------------------------------------------------------------
ASM_PFX(EfiCommonLibSetMem):
push %rdi
cmp $0x0,%rdx
je SetDone
mov %rcx,%rdi
mov %r8b,%al
mov %al,%ah
shrd $0x10,%eax,%ecx
shld $0x10,%ecx,%eax
mov %rdx,%rcx
shr $0x2,%rcx
rep stos %eax,%es:(%rdi)
mov %rdx,%rcx
and $0x3,%rcx
rep stos %al,%es:(%rdi)
SetDone:
pop %rdi
retq