Commit | Line | Data |
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d5b37092 MS |
1 | #ifndef __ASM_MICROBLAZE_SYSCALL_H |
2 | #define __ASM_MICROBLAZE_SYSCALL_H | |
3 | ||
ce5d1128 | 4 | #include <uapi/linux/audit.h> |
d5b37092 MS |
5 | #include <linux/kernel.h> |
6 | #include <linux/sched.h> | |
7 | #include <asm/ptrace.h> | |
8 | ||
9 | /* The system call number is given by the user in R12 */ | |
10 | static inline long syscall_get_nr(struct task_struct *task, | |
11 | struct pt_regs *regs) | |
12 | { | |
13 | return regs->r12; | |
14 | } | |
15 | ||
16 | static inline void syscall_rollback(struct task_struct *task, | |
17 | struct pt_regs *regs) | |
18 | { | |
19 | /* TODO. */ | |
20 | } | |
21 | ||
22 | static inline long syscall_get_error(struct task_struct *task, | |
23 | struct pt_regs *regs) | |
24 | { | |
25 | return IS_ERR_VALUE(regs->r3) ? regs->r3 : 0; | |
26 | } | |
27 | ||
28 | static inline long syscall_get_return_value(struct task_struct *task, | |
29 | struct pt_regs *regs) | |
30 | { | |
31 | return regs->r3; | |
32 | } | |
33 | ||
34 | static inline void syscall_set_return_value(struct task_struct *task, | |
35 | struct pt_regs *regs, | |
36 | int error, long val) | |
37 | { | |
38 | if (error) | |
39 | regs->r3 = -error; | |
40 | else | |
41 | regs->r3 = val; | |
42 | } | |
43 | ||
44 | static inline microblaze_reg_t microblaze_get_syscall_arg(struct pt_regs *regs, | |
45 | unsigned int n) | |
46 | { | |
47 | switch (n) { | |
48 | case 5: return regs->r10; | |
49 | case 4: return regs->r9; | |
50 | case 3: return regs->r8; | |
51 | case 2: return regs->r7; | |
52 | case 1: return regs->r6; | |
53 | case 0: return regs->r5; | |
54 | default: | |
55 | BUG(); | |
56 | } | |
57 | return ~0; | |
58 | } | |
59 | ||
60 | static inline void microblaze_set_syscall_arg(struct pt_regs *regs, | |
61 | unsigned int n, | |
62 | unsigned long val) | |
63 | { | |
64 | switch (n) { | |
65 | case 5: | |
66 | regs->r10 = val; | |
67 | case 4: | |
68 | regs->r9 = val; | |
69 | case 3: | |
70 | regs->r8 = val; | |
71 | case 2: | |
72 | regs->r7 = val; | |
73 | case 1: | |
74 | regs->r6 = val; | |
75 | case 0: | |
76 | regs->r5 = val; | |
77 | default: | |
78 | BUG(); | |
79 | } | |
80 | } | |
81 | ||
82 | static inline void syscall_get_arguments(struct task_struct *task, | |
83 | struct pt_regs *regs, | |
84 | unsigned int i, unsigned int n, | |
85 | unsigned long *args) | |
86 | { | |
87 | while (n--) | |
88 | *args++ = microblaze_get_syscall_arg(regs, i++); | |
89 | } | |
90 | ||
91 | static inline void syscall_set_arguments(struct task_struct *task, | |
92 | struct pt_regs *regs, | |
93 | unsigned int i, unsigned int n, | |
94 | const unsigned long *args) | |
95 | { | |
96 | while (n--) | |
97 | microblaze_set_syscall_arg(regs, i++, *args++); | |
98 | } | |
99 | ||
8543e6c9 | 100 | asmlinkage unsigned long do_syscall_trace_enter(struct pt_regs *regs); |
c1df53b3 MS |
101 | asmlinkage void do_syscall_trace_leave(struct pt_regs *regs); |
102 | ||
ce5d1128 EP |
103 | static inline int syscall_get_arch(void) |
104 | { | |
105 | return AUDIT_ARCH_MICROBLAZE; | |
106 | } | |
d5b37092 | 107 | #endif /* __ASM_MICROBLAZE_SYSCALL_H */ |