WIP FPC-III support
[linux/fpc-iii.git] / arch / nios2 / include / asm / syscall.h
blob526449edd768c01b6f0a218807e768bd0e4686f8
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright Altera Corporation (C) <2014>. All rights reserved
4 */
6 #ifndef __ASM_NIOS2_SYSCALL_H__
7 #define __ASM_NIOS2_SYSCALL_H__
9 #include <uapi/linux/audit.h>
10 #include <linux/err.h>
11 #include <linux/sched.h>
13 static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
15 return regs->r2;
18 static inline void syscall_rollback(struct task_struct *task,
19 struct pt_regs *regs)
21 regs->r2 = regs->orig_r2;
22 regs->r7 = regs->orig_r7;
25 static inline long syscall_get_error(struct task_struct *task,
26 struct pt_regs *regs)
28 return regs->r7 ? regs->r2 : 0;
31 static inline long syscall_get_return_value(struct task_struct *task,
32 struct pt_regs *regs)
34 return regs->r2;
37 static inline void syscall_set_return_value(struct task_struct *task,
38 struct pt_regs *regs, int error, long val)
40 if (error) {
41 /* error < 0, but nios2 uses > 0 return value */
42 regs->r2 = -error;
43 regs->r7 = 1;
44 } else {
45 regs->r2 = val;
46 regs->r7 = 0;
50 static inline void syscall_get_arguments(struct task_struct *task,
51 struct pt_regs *regs, unsigned long *args)
53 *args++ = regs->r4;
54 *args++ = regs->r5;
55 *args++ = regs->r6;
56 *args++ = regs->r7;
57 *args++ = regs->r8;
58 *args = regs->r9;
61 static inline void syscall_set_arguments(struct task_struct *task,
62 struct pt_regs *regs, const unsigned long *args)
64 regs->r4 = *args++;
65 regs->r5 = *args++;
66 regs->r6 = *args++;
67 regs->r7 = *args++;
68 regs->r8 = *args++;
69 regs->r9 = *args;
72 static inline int syscall_get_arch(struct task_struct *task)
74 return AUDIT_ARCH_NIOS2;
77 #endif