1 /* SPDX-License-Identifier: GPL-2.0-only */ 1
2 /*
3 * Copyright Altera Corporation (C) <2014>. Al
4 */
5
6 #ifndef __ASM_NIOS2_SYSCALL_H__
7 #define __ASM_NIOS2_SYSCALL_H__
8
9 #include <uapi/linux/audit.h>
10 #include <linux/err.h>
11 #include <linux/sched.h>
12
13 static inline int syscall_get_nr(struct task_s
14 {
15 return regs->r2;
16 }
17
18 static inline void syscall_rollback(struct tas
19 struct pt_regs
20 {
21 regs->r2 = regs->orig_r2;
22 regs->r7 = regs->orig_r7;
23 }
24
25 static inline long syscall_get_error(struct ta
26 struct pt_regs
27 {
28 return regs->r7 ? regs->r2 : 0;
29 }
30
31 static inline long syscall_get_return_value(st
32 struct pt_regs *regs)
33 {
34 return regs->r2;
35 }
36
37 static inline void syscall_set_return_value(st
38 struct pt_regs *regs, int error, long
39 {
40 if (error) {
41 /* error < 0, but nios2 uses >
42 regs->r2 = -error;
43 regs->r7 = 1;
44 } else {
45 regs->r2 = val;
46 regs->r7 = 0;
47 }
48 }
49
50 static inline void syscall_get_arguments(struc
51 struct pt_regs *regs, unsigned long *a
52 {
53 *args++ = regs->r4;
54 *args++ = regs->r5;
55 *args++ = regs->r6;
56 *args++ = regs->r7;
57 *args++ = regs->r8;
58 *args = regs->r9;
59 }
60
61 static inline int syscall_get_arch(struct task
62 {
63 return AUDIT_ARCH_NIOS2;
64 }
65
66 #endif
67
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