78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/*
|
|
* OpenRISC Linux
|
|
*
|
|
* Linux architectural port borrowing liberally from similar works of
|
|
* others. All original copyrights apply as per the original source
|
|
* declaration.
|
|
*
|
|
* OpenRISC implementation:
|
|
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
|
|
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
|
|
* et al.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef __ASM_OPENRISC_SYSCALL_H__
|
|
#define __ASM_OPENRISC_SYSCALL_H__
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/sched.h>
|
|
|
|
static inline int
|
|
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
|
|
{
|
|
return regs->syscallno ? regs->syscallno : -1;
|
|
}
|
|
|
|
static inline void
|
|
syscall_rollback(struct task_struct *task, struct pt_regs *regs)
|
|
{
|
|
regs->gpr[11] = regs->orig_gpr11;
|
|
}
|
|
|
|
static inline long
|
|
syscall_get_error(struct task_struct *task, struct pt_regs *regs)
|
|
{
|
|
return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
|
|
}
|
|
|
|
static inline long
|
|
syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
|
|
{
|
|
return regs->gpr[11];
|
|
}
|
|
|
|
static inline void
|
|
syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
|
|
int error, long val)
|
|
{
|
|
if (error)
|
|
regs->gpr[11] = -error;
|
|
else
|
|
regs->gpr[11] = val;
|
|
}
|
|
|
|
static inline void
|
|
syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
|
|
unsigned int i, unsigned int n, unsigned long *args)
|
|
{
|
|
BUG_ON(i + n > 6);
|
|
|
|
memcpy(args, ®s->gpr[3 + i], n * sizeof(args[0]));
|
|
}
|
|
|
|
static inline void
|
|
syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
|
|
unsigned int i, unsigned int n, const unsigned long *args)
|
|
{
|
|
BUG_ON(i + n > 6);
|
|
|
|
memcpy(®s->gpr[3 + i], args, n * sizeof(args[0]));
|
|
}
|
|
|
|
#endif
|