1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2013 ARM Ltd. 4 * Copyright (C) 2013 Linaro. 5 * 6 * This code is based on glibc cortex strings work originally authored by Linaro 7 * be found @ 8 * 9 * http://bazaar.launchpad.net/~linaro-toolchain-dev/cortex-strings/trunk/ 10 * files/head:/src/aarch64/ 11 */ 12 13 #include <linux/linkage.h> 14 #include <asm/assembler.h> 15 #include <asm/cache.h> 16 17 /* 18 * Copy a buffer from src to dest (alignment handled by the hardware) 19 * 20 * Parameters: 21 * x0 - dest 22 * x1 - src 23 * x2 - n 24 * Returns: 25 * x0 - dest 26 */ 27 .macro ldrb1 reg, ptr, val 28 ldrb \reg, [\ptr], \val 29 .endm 30 31 .macro strb1 reg, ptr, val 32 strb \reg, [\ptr], \val 33 .endm 34 35 .macro ldrh1 reg, ptr, val 36 ldrh \reg, [\ptr], \val 37 .endm 38 39 .macro strh1 reg, ptr, val 40 strh \reg, [\ptr], \val 41 .endm 42 43 .macro ldr1 reg, ptr, val 44 ldr \reg, [\ptr], \val 45 .endm 46 47 .macro str1 reg, ptr, val 48 str \reg, [\ptr], \val 49 .endm 50 51 .macro ldp1 reg1, reg2, ptr, val 52 ldp \reg1, \reg2, [\ptr], \val 53 .endm 54 55 .macro stp1 reg1, reg2, ptr, val 56 stp \reg1, \reg2, [\ptr], \val 57 .endm 58 59 SYM_FUNC_START_ALIAS(__memcpy) 60 SYM_FUNC_START_WEAK_PI(memcpy) 61 #include "copy_template.S" 62 ret 63 SYM_FUNC_END_PI(memcpy) 64 EXPORT_SYMBOL(memcpy) 65 SYM_FUNC_END_ALIAS(__memcpy) 66 EXPORT_SYMBOL(__memcpy) 67