#------------------------------------------------------------------------------

#

# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>

# 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

# )

#------------------------------------------------------------------------------

ASM_GLOBAL ASM_PFX(InternalMemSetMem)

ASM_PFX(InternalMemSetMem):

pushq %rdi

pushq %rbx

pushq %rcx # push Buffer

movq %r8, %rax # rax = Value

andq $0xff, %rax # rax = lower 8 bits of r8, upper 56 bits are 0

movb %al, %ah # ah = al

movw %ax, %bx # bx = ax

shlq $0x10, %rax # rax = ax << 16

movw %bx, %ax # ax = bx

movq %rax, %rbx # ebx = eax

shlq $0x20, %rax # rax = rax << 32

orq %rbx, %rax # eax = ebx

movq %rcx, %rdi # rdi = Buffer

movq %rdx, %rcx # rcx = Count

shrq $3, %rcx # rcx = rcx / 8

cld

rep stosq

movq %rdx, %rcx # rcx = rdx

andq $7, %rcx # rcx = rcx & 7

rep stosb

popq %rax # rax = Buffer

popq %rbx

popq %rdi

ret