| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | ;;; SPDX-License-Identifier: GPL-2.0 |
| 2 | ;;; strncpy.S | ||||
| 3 | |||||
| 4 | #include <asm/linkage.h> | ||||
| 5 | |||||
| 6 | .text | ||||
| 7 | .global strncpy_from_user | ||||
| 8 | |||||
| 9 | ;;; long strncpy_from_user(void *to, void *from, size_t n) | ||||
| 10 | strncpy_from_user: | ||||
| 11 | mov.l er2,er2 | ||||
| 12 | bne 1f | ||||
| 13 | sub.l er0,er0 | ||||
| 14 | rts | ||||
| 15 | 1: | ||||
| 16 | mov.l er4,@-sp | ||||
| 17 | sub.l er3,er3 | ||||
| 18 | 2: | ||||
| 19 | mov.b @er1+,r4l | ||||
| 20 | mov.b r4l,@er0 | ||||
| 21 | adds #1,er0 | ||||
| 22 | beq 3f | ||||
| 23 | inc.l #1,er3 | ||||
| 24 | dec.l #1,er2 | ||||
| 25 | bne 2b | ||||
| 26 | 3: | ||||
| 27 | dec.l #1,er2 | ||||
| 28 | 4: | ||||
| 29 | mov.b r4l,@er0 | ||||
| 30 | adds #1,er0 | ||||
| 31 | dec.l #1,er2 | ||||
| 32 | bne 4b | ||||
| 33 | mov.l er3,er0 | ||||
| 34 | mov.l @sp+,er4 | ||||
| 35 | rts | ||||