| * Copyright (C) 2012 ARM Ltd. |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| #include <linux/linkage.h> |
| #include <asm/assembler.h> |
| * Copy to user space from a kernel buffer (alignment handled by the hardware) |
| add x4, x0, x2 // upper user buffer boundary |
| USER(9f, str x3, [x0], #8 ) |
| USER(9f, str w3, [x0], #4 ) |
| USER(9f, strh w3, [x0], #2 ) |
| 9: sub x0, x4, x0 // bytes not copied |