73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-10-25 Shell Move ffs to cpuport, add general implementation
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* by inline assembly
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* 2024-01-18 Shell support rt_hw_thread_self to improve overall performance
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*/
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#ifndef CPUPORT_H__
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#define CPUPORT_H__
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#include <armv8.h>
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#include <rtcompiler.h>
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#include <rttypes.h>
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#ifdef RT_USING_SMP
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/**
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* Spinlock
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*/
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typedef struct
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{
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rt_uint32_t value;
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} rt_hw_spinlock_t;
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#endif /* RT_USING_SMP */
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#define rt_hw_barrier(cmd, ...) \
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__asm__ volatile (RT_STRINGIFY(cmd) " "RT_STRINGIFY(__VA_ARGS__):::"memory")
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#define rt_hw_isb() rt_hw_barrier(isb)
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#define rt_hw_dmb() rt_hw_barrier(dmb, ish)
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#define rt_hw_wmb() rt_hw_barrier(dmb, ishst)
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#define rt_hw_rmb() rt_hw_barrier(dmb, ishld)
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#define rt_hw_dsb() rt_hw_barrier(dsb, ish)
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#define rt_hw_wfi() rt_hw_barrier(wfi)
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#define rt_hw_wfe() rt_hw_barrier(wfe)
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#define rt_hw_sev() rt_hw_barrier(sev)
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#define rt_hw_cpu_relax() rt_hw_barrier(yield)
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#define rt_hw_sysreg_write(sysreg, val) \
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__asm__ volatile ("msr "RT_STRINGIFY(sysreg)", %0"::"r"((rt_uint64_t)(val)))
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#define rt_hw_sysreg_read(sysreg, val) \
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__asm__ volatile ("mrs %0, "RT_STRINGIFY(sysreg)"":"=r"((val)))
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void _thread_start(void);
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#ifdef ARCH_USING_HW_THREAD_SELF
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rt_inline struct rt_thread *rt_hw_thread_self(void)
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{
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struct rt_thread *thread;
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__asm__ volatile ("mrs %0, " RT_STRINGIFY(ARM64_THREAD_REG) :"=r"(thread));
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return thread;
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}
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rt_inline void rt_hw_thread_set_self(struct rt_thread *thread)
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{
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__asm__ volatile ("msr " RT_STRINGIFY(ARM64_THREAD_REG) ", %0"::"r"(thread));
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}
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#endif /* ARCH_USING_HW_THREAD_SELF */
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#endif /*CPUPORT_H__*/
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