2022-11-10 22:22:48 +08:00
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/*
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* Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* FilePath: _cpu_asm.S
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* Date: 2022-02-10 14:53:42
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* LastEditTime: 2022-02-17 17:57:55
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2023-05-11 10:25:21 +08:00
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* Description: This file is for
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2022-11-10 22:22:48 +08:00
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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*/
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#include "sdkconfig.h"
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#ifdef CONFIG_TARGET_ARMV8_AARCH64
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// ------------------------------------------------------------
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.global GetAffinity
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//uint32_t GetAffinity(void);
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.type GetAffinity, @function
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GetAffinity:
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MRS x0, MPIDR_EL1
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RET
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.global ArchSpinLock;
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.text;
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ArchSpinLock:
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mov w2, #1
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sevl
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1:
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wfe
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ldaxr w1, [x0]
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cbnz w1, 1b
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stxr w1, w2, [x0]
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cbnz w1, 1b
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ret
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.global ArchSpinUnlock;
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.text;
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ArchSpinUnlock:
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stlr xzr, [x0]
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ret
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#else
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.globl GetAffinity
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GetAffinity:
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mrc p15, #0, r0, c0, c0, #5 @ read multiprocessor affinity register
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bx lr
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#endif
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