ardix/include/arch-generic/do_switch.h

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/* See the end of this file for copyright, license, and warranty information. */
#pragma once
#include <arch/hardware.h>
#include <ardix/sched.h>
#include <toolchain.h>
/**
* @brief New tasks point their initial program counter here.
*/
extern void _leave(void);
extern void _do_switch(struct context *old, struct context *new);
/**
* @brief Perform an in-kernel context switch.
* This is called from `schedule()`, and will suspend the current task.
* The call returns when the current task is woken back up.
*
* @param old Currently running task in whose TCB the context will be stored
* @param new Task to switch to, must not be the same as `old`
*/
__always_inline void do_switch(struct task *old, struct task *new)
{
_do_switch(&old->tcb.context, &new->tcb.context);
}
/*
* This file is part of Ardix.
* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
*
* Ardix is non-violent software: you may only use, redistribute,
* and/or modify it under the terms of the CNPLv6+ as found in
* the LICENSE file in the source code root directory or at
* <https://git.pixie.town/thufie/CNPL>.
*
* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
* permitted by applicable law. See the CNPLv6+ for details.
*/