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64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
/*
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* Copyright (C) 2021 Koen Zandberg <koen@bergzand.net>
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* 2021 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup cpu_fe310
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* @{
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*
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* @file
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* @brief Implementation of the kernels thread interface
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*
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* @author Koen Zandberg <koen@bergzand.net>
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*/
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#ifndef THREAD_ARCH_H
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#define THREAD_ARCH_H
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#include "irq.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define THREAD_API_INLINED
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#ifndef DOXYGEN /* Doxygen is in core/include/thread.h */
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static inline void _ecall_dispatch(uint32_t num, void *ctx)
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{
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/* function arguments are in a0 and a1 as per ABI */
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__asm__ volatile (
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"add a0, x0, %[num] \n"
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"add a1, x0, %[ctx] \n"
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"ECALL\n"
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: /* No outputs */
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:[num] "r" (num), [ctx] "r" (ctx)
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: "memory", "a0", "a1"
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);
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}
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static inline __attribute__((always_inline)) void thread_yield_higher(void)
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{
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if (irq_is_in()) {
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sched_context_switch_request = 1;
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}
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else {
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_ecall_dispatch(0, NULL);
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}
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}
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#endif /* DOXYGEN */
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#ifdef __cplusplus
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}
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#endif
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#endif /* THREAD_ARCH_H */
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/** @} */
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