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https://github.com/Atmosphere-NX/Atmosphere.git
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44 lines
1.3 KiB
ArmAsm
44 lines
1.3 KiB
ArmAsm
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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.section .text._ZN3ams6secmon15AcquireSpinLockERj, "ax", %progbits
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.align 4
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.global _ZN3ams6secmon15AcquireSpinLockERj
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_ZN3ams6secmon15AcquireSpinLockERj:
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/* Prepare to try to take the spinlock. */
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mov w1, #1
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sevl
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prfm pstl1keep, [x0]
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1: /* Repeatedly try to take the lock. */
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wfe
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ldaxr w2, [x0]
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cbnz w2, 1b
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stxr w2, w1, [x0]
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cbnz w2, 1b
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/* Return. */
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ret
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.section .text._ZN3ams6secmon15ReleaseSpinLockERj, "ax", %progbits
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.align 4
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.global _ZN3ams6secmon15ReleaseSpinLockERj
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_ZN3ams6secmon15ReleaseSpinLockERj:
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/* Release the spinlock. */
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stlr wzr, [x0]
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/* Return. */
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ret
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