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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/kernel/arthur.c | |
3 | * | |
4 | * Copyright (C) 1998, 1999, 2000, 2001 Philip Blundell | |
5 | * | |
6 | * Arthur personality | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/personality.h> | |
18 | #include <linux/stddef.h> | |
19 | #include <linux/signal.h> | |
20 | #include <linux/init.h> | |
4e57b681 | 21 | #include <linux/sched.h> |
1da177e4 LT |
22 | |
23 | #include <asm/ptrace.h> | |
24 | ||
25 | /* Arthur doesn't have many signals, and a lot of those that it does | |
26 | have don't map easily to any Linux equivalent. Never mind. */ | |
27 | ||
28 | #define ARTHUR_SIGABRT 1 | |
29 | #define ARTHUR_SIGFPE 2 | |
30 | #define ARTHUR_SIGILL 3 | |
31 | #define ARTHUR_SIGINT 4 | |
32 | #define ARTHUR_SIGSEGV 5 | |
33 | #define ARTHUR_SIGTERM 6 | |
34 | #define ARTHUR_SIGSTAK 7 | |
35 | #define ARTHUR_SIGUSR1 8 | |
36 | #define ARTHUR_SIGUSR2 9 | |
37 | #define ARTHUR_SIGOSERROR 10 | |
38 | ||
39 | static unsigned long arthur_to_linux_signals[32] = { | |
40 | 0, 1, 2, 3, 4, 5, 6, 7, | |
41 | 8, 9, 10, 11, 12, 13, 14, 15, | |
42 | 16, 17, 18, 19, 20, 21, 22, 23, | |
43 | 24, 25, 26, 27, 28, 29, 30, 31 | |
44 | }; | |
45 | ||
46 | static unsigned long linux_to_arthur_signals[32] = { | |
47 | 0, -1, ARTHUR_SIGINT, -1, | |
48 | ARTHUR_SIGILL, 5, ARTHUR_SIGABRT, 7, | |
49 | ARTHUR_SIGFPE, 9, ARTHUR_SIGUSR1, ARTHUR_SIGSEGV, | |
50 | ARTHUR_SIGUSR2, 13, 14, ARTHUR_SIGTERM, | |
51 | 16, 17, 18, 19, | |
52 | 20, 21, 22, 23, | |
53 | 24, 25, 26, 27, | |
54 | 28, 29, 30, 31 | |
55 | }; | |
56 | ||
57 | static void arthur_lcall7(int nr, struct pt_regs *regs) | |
58 | { | |
59 | struct siginfo info; | |
60 | info.si_signo = SIGSWI; | |
61 | info.si_errno = nr; | |
62 | /* Bounce it to the emulator */ | |
63 | send_sig_info(SIGSWI, &info, current); | |
64 | } | |
65 | ||
66 | static struct exec_domain arthur_exec_domain = { | |
67 | .name = "Arthur", | |
68 | .handler = arthur_lcall7, | |
69 | .pers_low = PER_RISCOS, | |
70 | .pers_high = PER_RISCOS, | |
71 | .signal_map = arthur_to_linux_signals, | |
72 | .signal_invmap = linux_to_arthur_signals, | |
73 | .module = THIS_MODULE, | |
74 | }; | |
75 | ||
76 | /* | |
77 | * We could do with some locking to stop Arthur being removed while | |
78 | * processes are using it. | |
79 | */ | |
80 | ||
81 | static int __init arthur_init(void) | |
82 | { | |
83 | return register_exec_domain(&arthur_exec_domain); | |
84 | } | |
85 | ||
86 | static void __exit arthur_exit(void) | |
87 | { | |
88 | unregister_exec_domain(&arthur_exec_domain); | |
89 | } | |
90 | ||
91 | module_init(arthur_init); | |
92 | module_exit(arthur_exit); | |
7cc09c24 AB |
93 | |
94 | MODULE_LICENSE("GPL"); |