1/* 2 * Copyright (C) 2013 ARM Ltd. 3 * Copyright (C) 2013 Linaro. 4 * 5 * This code is based on glibc cortex strings work originally authored by Linaro 6 * and re-licensed under GPLv2 for the Linux kernel. The original code can 7 * be found @ 8 * 9 * http://bazaar.launchpad.net/~linaro-toolchain-dev/cortex-strings/trunk/ 10 * files/head:/src/aarch64/ 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program. If not, see <http://www.gnu.org/licenses/>. 23 */ 24 25#include <linux/linkage.h> 26#include <asm/assembler.h> 27#include <asm/cache.h> 28 29/* 30 * Copy a buffer from src to dest (alignment handled by the hardware) 31 * 32 * Parameters: 33 * x0 - dest 34 * x1 - src 35 * x2 - n 36 * Returns: 37 * x0 - dest 38 */ 39 .macro ldrb1 ptr, regB, val 40 ldrb \ptr, [\regB], \val 41 .endm 42 43 .macro strb1 ptr, regB, val 44 strb \ptr, [\regB], \val 45 .endm 46 47 .macro ldrh1 ptr, regB, val 48 ldrh \ptr, [\regB], \val 49 .endm 50 51 .macro strh1 ptr, regB, val 52 strh \ptr, [\regB], \val 53 .endm 54 55 .macro ldr1 ptr, regB, val 56 ldr \ptr, [\regB], \val 57 .endm 58 59 .macro str1 ptr, regB, val 60 str \ptr, [\regB], \val 61 .endm 62 63 .macro ldp1 ptr, regB, regC, val 64 ldp \ptr, \regB, [\regC], \val 65 .endm 66 67 .macro stp1 ptr, regB, regC, val 68 stp \ptr, \regB, [\regC], \val 69 .endm 70 71 .weak memcpy 72ENTRY(__memcpy) 73ENTRY(memcpy) 74#include "copy_template.S" 75 ret 76ENDPIPROC(memcpy) 77ENDPROC(__memcpy) 78