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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Author: Hanlu Li <lihanlu@loongson.cn>
* Huacai Chen <chenhuacai@loongson.cn>
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef __ASM_LOONGARCH_SYSCALL_H
#define __ASM_LOONGARCH_SYSCALL_H
#include <linux/compiler.h>
#include <uapi/linux/audit.h>
#include <linux/elf-em.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/uaccess.h>
#include <asm/ptrace.h>
#include <asm/unistd.h>
extern void *sys_call_table[];
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return regs->regs[11];
}
static inline void syscall_set_nr(struct task_struct *task,
struct pt_regs *regs,
int nr)
{
regs->regs[11] = nr;
}
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
regs->regs[4] = regs->orig_a0;
}
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
unsigned long error = regs->regs[4];
return IS_ERR_VALUE(error) ? error : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->regs[4];
}
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
regs->regs[4] = (long) error ? error : val;
}
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
args[0] = regs->orig_a0;
memcpy(&args[1], ®s->regs[5], 5 * sizeof(long));
}
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
regs->orig_a0 = args[0];
memcpy(®s->regs[5], &args[1], 5 * sizeof(long));
}
static inline int syscall_get_arch(struct task_struct *task)
{
return AUDIT_ARCH_LOONGARCH64;
}
static inline bool arch_syscall_is_vdso_sigreturn(struct pt_regs *regs)
{
return false;
}
#endif /* __ASM_LOONGARCH_SYSCALL_H */
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