/* SPDX-License-Identifier: GPL-2.0 */
/* syscall.h */

#ifndef _ASM_PARISC_SYSCALL_H_
#define _ASM_PARISC_SYSCALL_H_

#include <uapi/linux/audit.h>
#include <linux/compat.h>
#include <linux/err.h>
#include <asm/ptrace.h>

#define NR_syscalls (__NR_Linux_syscalls)

static inline long syscall_get_nr(struct task_struct *tsk,
                                  struct pt_regs *regs)
{
        return regs->gr[20];
}

static inline void syscall_set_nr(struct task_struct *tsk,
                                  struct pt_regs *regs,
                                  int nr)
{
        regs->gr[20] = nr;
}

static inline void syscall_get_arguments(struct task_struct *tsk,
                                         struct pt_regs *regs,
                                         unsigned long *args)
{
        args[5] = regs->gr[21];
        args[4] = regs->gr[22];
        args[3] = regs->gr[23];
        args[2] = regs->gr[24];
        args[1] = regs->gr[25];
        args[0] = regs->gr[26];
}

static inline void syscall_set_arguments(struct task_struct *tsk,
                                         struct pt_regs *regs,
                                         unsigned long *args)
{
        regs->gr[21] = args[5];
        regs->gr[22] = args[4];
        regs->gr[23] = args[3];
        regs->gr[24] = args[2];
        regs->gr[25] = args[1];
        regs->gr[26] = args[0];
}

static inline long syscall_get_error(struct task_struct *task,
                                     struct pt_regs *regs)
{
        unsigned long error = regs->gr[28];
        return IS_ERR_VALUE(error) ? error : 0;
}

static inline long syscall_get_return_value(struct task_struct *task,
                                                struct pt_regs *regs)
{
        return regs->gr[28];
}

static inline void syscall_set_return_value(struct task_struct *task,
                                            struct pt_regs *regs,
                                            int error, long val)
{
        regs->gr[28] = error ? error : val;
}

static inline void syscall_rollback(struct task_struct *task,
                                    struct pt_regs *regs)
{
        /* do nothing */
}

static inline int syscall_get_arch(struct task_struct *task)
{
        int arch = AUDIT_ARCH_PARISC;
#ifdef CONFIG_64BIT
        if (!__is_compat_task(task))
                arch = AUDIT_ARCH_PARISC64;
#endif
        return arch;
}
#endif /*_ASM_PARISC_SYSCALL_H_*/