mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 04:42:11 +00:00
45 lines
1.3 KiB
ArmAsm
45 lines
1.3 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope 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/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.section .text._ZN3ams6secmon15AcquireSpinLockERj, "ax", %progbits
|
||
|
|
.align 4
|
||
|
|
.global _ZN3ams6secmon15AcquireSpinLockERj
|
||
|
|
_ZN3ams6secmon15AcquireSpinLockERj:
|
||
|
|
/* Prepare to try to take the spinlock. */
|
||
|
|
mov w1, #1
|
||
|
|
sevl
|
||
|
|
prfm pstl1keep, [x0]
|
||
|
|
|
||
|
|
1: /* Repeatedly try to take the lock. */
|
||
|
|
wfe
|
||
|
|
ldaxr w2, [x0]
|
||
|
|
cbnz w2, 1b
|
||
|
|
stxr w2, w1, [x0]
|
||
|
|
cbnz w2, 1b
|
||
|
|
|
||
|
|
/* Return. */
|
||
|
|
ret
|
||
|
|
|
||
|
|
.section .text._ZN3ams6secmon15ReleaseSpinLockERj, "ax", %progbits
|
||
|
|
.align 4
|
||
|
|
.global _ZN3ams6secmon15ReleaseSpinLockERj
|
||
|
|
_ZN3ams6secmon15ReleaseSpinLockERj:
|
||
|
|
/* Release the spinlock. */
|
||
|
|
stlr wzr, [x0]
|
||
|
|
|
||
|
|
/* Return. */
|
||
|
|
ret
|