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/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
#ifndef APOS_ARCH_PROC_H
#define APOS_ARCH_PROC_H
/**
* @file proc.h
* Arch-specific process related stuff.
*/
#if defined(riscv64)
#include "../../arch/riscv64/include/proc.h"
#elif defined(riscv32)
#include "../../arch/riscv32/include/proc.h"
#endif
#include <apos/uapi.h>
/**
* Attach argument data to thread.
*
* @param t Thread that will run after return.
* @param a Arguments to attach.
*/
void set_args(struct tcb *t, struct sys_ret a);
/**
* Get argument data attached to thread.
* To some extent a hack, used by swap.
*
* @todo is swap necessary? Would assign be enough?
*
* @param t Thread to read data from.
* @return Args associated with thread.
*/
struct sys_ret get_args(struct tcb *t);
/** \todo Should these be in arch/tcb.h or something? */
/**
* Attach thread stack and thread local storage when returning to userspace.
*
* Their info should already be stored in \c t, and this function just
* actualizes the information.
*
* @param t Thread that will run after return.
*/
void set_thread(struct tcb *t);
/**
* Copy registers from tcb save area to address \p p.
* Intended to be used for copying thread state to rpc stack.
*
* @param t Thread whose registers to save.
* @param p Address to save to.
*/
void save_regs(struct tcb *t, void *p);
/**
* Copy registers from address \p p to tcb save registers.
* Intended to be used for copying thread state from rpc stack.
*
* @param p Address to load from.
* @param t Thread whose registers to load.
*/
void load_regs(void *p, struct tcb *t);
void adjust_ipi(struct tcb *t);
void adjust_syscall(struct tcb *t);
/**
* Run \c init program.
*
* @param t Thread that \c init is attached to.
* @param fdt Pointer to FDT that is passed to \c init.
*/
__noreturn void run_init(struct tcb *t, void *fdt);
#endif /* APOS_ARCH_PROC_H */
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