83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
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* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Private kernel definitions
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*
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* This file contains private kernel function/macro definitions and various
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* other definitions for the RISCV processor architecture.
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*/
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#ifndef ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_
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#define ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_
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#include <kernel_arch_data.h>
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#include <pmp.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _ASMLANGUAGE
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static ALWAYS_INLINE void arch_kernel_init(void)
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{
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#ifdef CONFIG_THREAD_LOCAL_STORAGE
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__asm__ volatile ("li tp, 0");
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#endif
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#ifdef CONFIG_USERSPACE
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csr_write(mscratch, 0);
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#endif
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#ifdef CONFIG_RISCV_PMP
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z_riscv_pmp_init();
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#endif
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}
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static ALWAYS_INLINE void
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arch_switch(void *switch_to, void **switched_from)
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{
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extern void z_riscv_switch(struct k_thread *new, struct k_thread *old);
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struct k_thread *new = switch_to;
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struct k_thread *old = CONTAINER_OF(switched_from, struct k_thread,
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switch_handle);
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z_riscv_switch(new, old);
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}
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FUNC_NORETURN void z_riscv_fatal_error(unsigned int reason,
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const z_arch_esf_t *esf);
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static inline bool arch_is_in_isr(void)
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{
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#ifdef CONFIG_SMP
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unsigned int key = arch_irq_lock();
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bool ret = arch_curr_cpu()->nested != 0U;
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arch_irq_unlock(key);
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return ret;
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#else
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return _kernel.cpus[0].nested != 0U;
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#endif
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}
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extern FUNC_NORETURN void z_riscv_userspace_enter(k_thread_entry_t user_entry,
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void *p1, void *p2, void *p3,
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uint32_t stack_end,
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uint32_t stack_start);
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#ifdef CONFIG_IRQ_OFFLOAD
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int z_irq_do_offload(void);
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#endif
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_ARCH_RISCV_INCLUDE_KERNEL_ARCH_FUNC_H_ */
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