audk/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem8.S

58 lines
1.7 KiB
ArmAsm

#
# ConvertAsm.py: Automatically generated from ScanMem8.asm
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 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:
#
# ScanMem8.S
#
# Abstract:
#
# ScanMem8 function
#
# Notes:
#
# The following BaseMemoryLib instances contain the same copy of this file:
#
# BaseMemoryLibRepStr
# BaseMemoryLibMmx
# BaseMemoryLibSse2
# BaseMemoryLibOptDxe
# BaseMemoryLibOptPei
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# CONST VOID *
# EFIAPI
# InternalMemScanMem8 (
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT8 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem8)
ASM_PFX(InternalMemScanMem8):
push rdi
mov rdi, rcx
mov rcx, rdx
mov rax, r8
repne scasb
lea rax, [rdi - 1]
cmovnz rax, rcx # set rax to 0 if not found
pop rdi
ret