threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
36 lines
467 B
ArmAsm
36 lines
467 B
ArmAsm
;;; SPDX-License-Identifier: GPL-2.0
|
|
;;; strncpy.S
|
|
|
|
#include <asm/linkage.h>
|
|
|
|
.text
|
|
.global strncpy_from_user
|
|
|
|
;;; long strncpy_from_user(void *to, void *from, size_t n)
|
|
strncpy_from_user:
|
|
mov.l er2,er2
|
|
bne 1f
|
|
sub.l er0,er0
|
|
rts
|
|
1:
|
|
mov.l er4,@-sp
|
|
sub.l er3,er3
|
|
2:
|
|
mov.b @er1+,r4l
|
|
mov.b r4l,@er0
|
|
adds #1,er0
|
|
beq 3f
|
|
inc.l #1,er3
|
|
dec.l #1,er2
|
|
bne 2b
|
|
3:
|
|
dec.l #1,er2
|
|
4:
|
|
mov.b r4l,@er0
|
|
adds #1,er0
|
|
dec.l #1,er2
|
|
bne 4b
|
|
mov.l er3,er0
|
|
mov.l @sp+,er4
|
|
rts
|