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12#ifndef _ASM_SYSCALL_H
13#define _ASM_SYSCALL_H
14
15#include <linux/err.h>
16#include <asm/ptrace.h>
17
18
19
20
21static inline long syscall_get_nr(struct task_struct *task,
22 struct pt_regs *regs)
23{
24 return regs->syscallno;
25}
26
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29
30
31static inline void syscall_rollback(struct task_struct *task,
32 struct pt_regs *regs)
33{
34 regs->gr8 = regs->orig_gr8;
35}
36
37
38
39
40
41static inline long syscall_get_error(struct task_struct *task,
42 struct pt_regs *regs)
43{
44 return IS_ERR_VALUE(regs->gr8) ? regs->gr8 : 0;
45}
46
47
48
49
50static inline long syscall_get_return_value(struct task_struct *task,
51 struct pt_regs *regs)
52{
53 return regs->gr8;
54}
55
56
57
58
59static inline void syscall_set_return_value(struct task_struct *task,
60 struct pt_regs *regs,
61 int error, long val)
62{
63 if (error)
64 regs->gr8 = -error;
65 else
66 regs->gr8 = val;
67}
68
69
70
71
72static inline void syscall_get_arguments(struct task_struct *task,
73 struct pt_regs *regs,
74 unsigned int i, unsigned int n,
75 unsigned long *args)
76{
77
78
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80
81
82
83 BUG_ON(i);
84
85
86 switch (n) {
87 case 6: args[5] = regs->gr13;
88 case 5: args[4] = regs->gr12;
89 case 4: args[3] = regs->gr11;
90 case 3: args[2] = regs->gr10;
91 case 2: args[1] = regs->gr9;
92 case 1: args[0] = regs->gr8;
93 break;
94 default:
95 BUG();
96 }
97}
98
99
100
101
102static inline void syscall_set_arguments(struct task_struct *task,
103 struct pt_regs *regs,
104 unsigned int i, unsigned int n,
105 const unsigned long *args)
106{
107
108 BUG_ON(i);
109
110 switch (n) {
111 case 6: regs->gr13 = args[5];
112 case 5: regs->gr12 = args[4];
113 case 4: regs->gr11 = args[3];
114 case 3: regs->gr10 = args[2];
115 case 2: regs->gr9 = args[1];
116 case 1: regs->gr8 = args[0];
117 break;
118 default:
119 BUG();
120 }
121}
122
123#endif
124