78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Copyright Altera Corporation (C) <2014>. All rights reserved
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ASM_NIOS2_SYSCALL_H__
|
||
|
|
#define __ASM_NIOS2_SYSCALL_H__
|
||
|
|
|
||
|
|
#include <uapi/linux/audit.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->r2;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void syscall_rollback(struct task_struct *task,
|
||
|
|
struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
regs->r2 = regs->orig_r2;
|
||
|
|
regs->r7 = regs->orig_r7;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline long syscall_get_error(struct task_struct *task,
|
||
|
|
struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
return regs->r7 ? regs->r2 : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline long syscall_get_return_value(struct task_struct *task,
|
||
|
|
struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
return regs->r2;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void syscall_set_return_value(struct task_struct *task,
|
||
|
|
struct pt_regs *regs, int error, long val)
|
||
|
|
{
|
||
|
|
if (error) {
|
||
|
|
/* error < 0, but nios2 uses > 0 return value */
|
||
|
|
regs->r2 = -error;
|
||
|
|
regs->r7 = 1;
|
||
|
|
} else {
|
||
|
|
regs->r2 = val;
|
||
|
|
regs->r7 = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void syscall_get_arguments(struct task_struct *task,
|
||
|
|
struct pt_regs *regs, unsigned long *args)
|
||
|
|
{
|
||
|
|
*args++ = regs->r4;
|
||
|
|
*args++ = regs->r5;
|
||
|
|
*args++ = regs->r6;
|
||
|
|
*args++ = regs->r7;
|
||
|
|
*args++ = regs->r8;
|
||
|
|
*args = regs->r9;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void syscall_set_arguments(struct task_struct *task,
|
||
|
|
struct pt_regs *regs, const unsigned long *args)
|
||
|
|
{
|
||
|
|
regs->r4 = *args++;
|
||
|
|
regs->r5 = *args++;
|
||
|
|
regs->r6 = *args++;
|
||
|
|
regs->r7 = *args++;
|
||
|
|
regs->r8 = *args++;
|
||
|
|
regs->r9 = *args;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int syscall_get_arch(struct task_struct *task)
|
||
|
|
{
|
||
|
|
return AUDIT_ARCH_NIOS2;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|