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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef __ASM_SH_SYSCALL_32_H |
3 | #define __ASM_SH_SYSCALL_32_H | |
4 | ||
37d181bb | 5 | #include <uapi/linux/audit.h> |
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6 | #include <linux/kernel.h> |
7 | #include <linux/sched.h> | |
34e19ada | 8 | #include <linux/err.h> |
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9 | #include <asm/ptrace.h> |
10 | ||
f15b2dc0 | 11 | /* The system call number is given by the user in R3 */ |
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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 | ||
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27 | static inline long syscall_get_error(struct task_struct *task, |
28 | struct pt_regs *regs) | |
29 | { | |
03f07876 | 30 | return IS_ERR_VALUE(regs->regs[0]) ? regs->regs[0] : 0; |
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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 | { | |
03dd061f | 43 | regs->regs[0] = (long) error ?: val; |
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44 | } |
45 | ||
46 | static inline void syscall_get_arguments(struct task_struct *task, | |
47 | struct pt_regs *regs, | |
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48 | unsigned long *args) |
49 | { | |
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50 | |
51 | /* Argument pattern is: R4, R5, R6, R7, R0, R1 */ | |
b35f549d SRRH |
52 | args[5] = regs->regs[1]; |
53 | args[4] = regs->regs[0]; | |
54 | args[3] = regs->regs[7]; | |
55 | args[2] = regs->regs[6]; | |
56 | args[1] = regs->regs[5]; | |
57 | args[0] = regs->regs[4]; | |
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58 | } |
59 | ||
60 | static inline void syscall_set_arguments(struct task_struct *task, | |
61 | struct pt_regs *regs, | |
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62 | const unsigned long *args) |
63 | { | |
32d92586 SRV |
64 | regs->regs[1] = args[5]; |
65 | regs->regs[0] = args[4]; | |
66 | regs->regs[7] = args[3]; | |
67 | regs->regs[6] = args[2]; | |
68 | regs->regs[5] = args[1]; | |
69 | regs->regs[4] = args[0]; | |
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70 | } |
71 | ||
16add411 | 72 | static inline int syscall_get_arch(struct task_struct *task) |
37d181bb EP |
73 | { |
74 | int arch = AUDIT_ARCH_SH; | |
75 | ||
76 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
77 | arch |= __AUDIT_ARCH_LE; | |
78 | #endif | |
79 | return arch; | |
80 | } | |
fb4f87a2 | 81 | #endif /* __ASM_SH_SYSCALL_32_H */ |