Merge tag 'selinux-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / arch / sh / include / asm / syscall_32.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SH_SYSCALL_32_H
3 #define __ASM_SH_SYSCALL_32_H
4
5 #include <uapi/linux/audit.h>
6 #include <linux/kernel.h>
7 #include <linux/sched.h>
8 #include <linux/err.h>
9 #include <asm/ptrace.h>
10
11 /* The system call number is given by the user in R3 */
12 static inline long syscall_get_nr(struct task_struct *task,
13                                   struct pt_regs *regs)
14 {
15         return (regs->tra >= 0) ? regs->regs[3] : -1L;
16 }
17
18 static inline void syscall_rollback(struct task_struct *task,
19                                     struct pt_regs *regs)
20 {
21         /*
22          * XXX: This needs some thought. On SH we don't
23          * save away the original r0 value anywhere.
24          */
25 }
26
27 static inline long syscall_get_error(struct task_struct *task,
28                                      struct pt_regs *regs)
29 {
30         return IS_ERR_VALUE(regs->regs[0]) ? regs->regs[0] : 0;
31 }
32
33 static inline long syscall_get_return_value(struct task_struct *task,
34                                             struct pt_regs *regs)
35 {
36         return regs->regs[0];
37 }
38
39 static inline void syscall_set_return_value(struct task_struct *task,
40                                             struct pt_regs *regs,
41                                             int error, long val)
42 {
43         if (error)
44                 regs->regs[0] = -error;
45         else
46                 regs->regs[0] = val;
47 }
48
49 static inline void syscall_get_arguments(struct task_struct *task,
50                                          struct pt_regs *regs,
51                                          unsigned long *args)
52 {
53
54         /* Argument pattern is: R4, R5, R6, R7, R0, R1 */
55         args[5] = regs->regs[1];
56         args[4] = regs->regs[0];
57         args[3] = regs->regs[7];
58         args[2] = regs->regs[6];
59         args[1] = regs->regs[5];
60         args[0] = regs->regs[4];
61 }
62
63 static inline void syscall_set_arguments(struct task_struct *task,
64                                          struct pt_regs *regs,
65                                          const unsigned long *args)
66 {
67         regs->regs[1] = args[5];
68         regs->regs[0] = args[4];
69         regs->regs[7] = args[3];
70         regs->regs[6] = args[2];
71         regs->regs[5] = args[1];
72         regs->regs[4] = args[0];
73 }
74
75 static inline int syscall_get_arch(void)
76 {
77         int arch = AUDIT_ARCH_SH;
78
79 #ifdef CONFIG_CPU_LITTLE_ENDIAN
80         arch |= __AUDIT_ARCH_LE;
81 #endif
82         return arch;
83 }
84 #endif /* __ASM_SH_SYSCALL_32_H */