Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_SH_SYSCALL_64_H
3#define __ASM_SH_SYSCALL_64_H
4
5#include <uapi/linux/audit.h>
6#include <linux/kernel.h>
7#include <linux/sched.h>
8#include <asm/ptrace.h>
9
10/* The system call number is given by the user in R9 */
11static inline long syscall_get_nr(struct task_struct *task,
12 struct pt_regs *regs)
13{
14 return (regs->syscall_nr >= 0) ? regs->regs[9] : -1L;
15}
16
17static inline void syscall_rollback(struct task_struct *task,
18 struct pt_regs *regs)
19{
20 /*
21 * XXX: This needs some thought. On SH we don't
22 * save away the original R9 value anywhere.
23 */
24}
25
26static inline long syscall_get_error(struct task_struct *task,
27 struct pt_regs *regs)
28{
29 return IS_ERR_VALUE(regs->regs[9]) ? regs->regs[9] : 0;
30}
31
32static inline long syscall_get_return_value(struct task_struct *task,
33 struct pt_regs *regs)
34{
35 return regs->regs[9];
36}
37
38static inline void syscall_set_return_value(struct task_struct *task,
39 struct pt_regs *regs,
40 int error, long val)
41{
42 if (error)
43 regs->regs[9] = -error;
44 else
45 regs->regs[9] = val;
46}
47
48static inline void syscall_get_arguments(struct task_struct *task,
49 struct pt_regs *regs,
50 unsigned long *args)
51{
52 memcpy(args, ®s->regs[2], 6 * sizeof(args[0]));
53}
54
55static inline void syscall_set_arguments(struct task_struct *task,
56 struct pt_regs *regs,
57 const unsigned long *args)
58{
59 memcpy(®s->regs[2], args, 6 * sizeof(args[0]));
60}
61
62static inline int syscall_get_arch(struct task_struct *task)
63{
64 int arch = AUDIT_ARCH_SH;
65
66#ifdef CONFIG_64BIT
67 arch |= __AUDIT_ARCH_64BIT;
68#endif
69#ifdef CONFIG_CPU_LITTLE_ENDIAN
70 arch |= __AUDIT_ARCH_LE;
71#endif
72
73 return arch;
74}
75#endif /* __ASM_SH_SYSCALL_64_H */