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