summaryrefslogtreecommitdiff
path: root/arch/csky/include/asm/syscall.h
blob: bda0a446c63ead759d9360d769fe68647a28f83d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __ASM_SYSCALL_H
#define __ASM_SYSCALL_H

#include <linux/sched.h>
#include <linux/err.h>
#include <abi/regdef.h>
#include <uapi/linux/audit.h>

static inline int
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
	return regs_syscallid(regs);
}

static inline void
syscall_rollback(struct task_struct *task, struct pt_regs *regs)
{
	regs->a0 = regs->orig_a0;
}

static inline long
syscall_get_error(struct task_struct *task, struct pt_regs *regs)
{
	unsigned long error = regs->a0;

	return IS_ERR_VALUE(error) ? error : 0;
}

static inline long
syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
{
	return regs->a0;
}

static inline void
syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
		int error, long val)
{
	regs->a0 = (long) error ?: val;
}

static inline void
syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
		      unsigned long *args)
{
	args[0] = regs->orig_a0;
	args++;
	memcpy(args, &regs->a1, 5 * sizeof(args[0]));
}

static inline void
syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
		      const unsigned long *args)
{
	regs->orig_a0 = args[0];
	args++;
	memcpy(&regs->a1, args, 5 * sizeof(regs->a1));
}

static inline int
syscall_get_arch(void)
{
	return AUDIT_ARCH_CSKY;
}

#endif	/* __ASM_SYSCALL_H */