1e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 2e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Copyright (C) 2013 ARM Ltd. 3e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 4e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This program is free software; you can redistribute it and/or modify 5e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * it under the terms of the GNU General Public License version 2 as 6e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * published by the Free Software Foundation. 7e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 8e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * This program is distributed in the hope that it will be useful, 9e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * but WITHOUT ANY WARRANTY; without even the implied warranty of 10e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * GNU General Public License for more details. 12e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 13e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * You should have received a copy of the GNU General Public License 14e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * along with this program. If not, see <http://www.gnu.org/licenses/>. 15e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 16e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 17e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <linux/linkage.h> 18e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <asm/assembler.h> 19e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 20e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/* 21e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Fill in the buffer with character c (alignment handled by the hardware) 22e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * 23e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Parameters: 24e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * x0 - buf 25e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * x1 - c 26e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * x2 - n 27e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * Returns: 28e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng * x0 - buf 29e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng */ 30e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen ChengENTRY(memset) 31e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng mov x4, x0 32e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng and w1, w1, #0xff 33e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng orr w1, w1, w1, lsl #8 34e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng orr w1, w1, w1, lsl #16 35e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng orr x1, x1, x1, lsl #32 36e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng subs x2, x2, #8 37e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng b.mi 2f 38e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng1: str x1, [x4], #8 39e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng subs x2, x2, #8 40e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng b.pl 1b 41e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng2: adds x2, x2, #4 42e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng b.mi 3f 43e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng sub x2, x2, #4 44e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng str w1, [x4], #4 45e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng3: adds x2, x2, #2 46e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng b.mi 4f 47e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng sub x2, x2, #2 48e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng strh w1, [x4], #2 49e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng4: adds x2, x2, #1 50e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng b.mi 5f 51e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng strb w1, [x4] 52e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng5: ret 53e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen ChengENDPROC(memset) 54