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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 | regs->regs[0] = (long) error ?: val; |
44 | } |
45 | |
46 | static inline void syscall_get_arguments(struct task_struct *task, |
47 | struct pt_regs *regs, |
48 | unsigned long *args) |
49 | { |
50 | |
51 | /* Argument pattern is: R4, R5, R6, R7, R0, R1 */ |
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]; |
58 | } |
59 | |
60 | static inline int syscall_get_arch(struct task_struct *task) |
61 | { |
62 | int arch = AUDIT_ARCH_SH; |
63 | |
64 | #ifdef CONFIG_CPU_LITTLE_ENDIAN |
65 | arch |= __AUDIT_ARCH_LE; |
66 | #endif |
67 | return arch; |
68 | } |
69 | #endif /* __ASM_SH_SYSCALL_32_H */ |
70 |
Warning: This file is not a C or C++ file. It does not have highlighting.