| Haavard Skinnemoen | 5f97f7f | 2006-09-25 23:32:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2004-2006 Atmel Corporation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | #include <linux/linkage.h> |
| 9 | #include <asm/page.h> |
| 10 | |
| 11 | /* |
| 12 | * copy_page |
| 13 | * |
| 14 | * r12 to (P1 address) |
| 15 | * r11 from (P1 address) |
| 16 | * r8-r10 scratch |
| 17 | */ |
| 18 | .text |
| 19 | .global copy_page |
| 20 | copy_page: |
| 21 | sub r10, r11, -(1 << PAGE_SHIFT) |
| 22 | /* pref r11[0] */ |
| 23 | 1: /* pref r11[8] */ |
| 24 | ld.d r8, r11++ |
| 25 | st.d r12++, r8 |
| 26 | cp r11, r10 |
| 27 | brlo 1b |
| 28 | mov pc, lr |