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9a8fd558 CZ |
1 | /* |
2 | * include/asm-xtensa/signal.h | |
3 | * | |
4 | * Swiped from SH. | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file "COPYING" in the main directory of this archive | |
8 | * for more details. | |
9 | * | |
10 | * Copyright (C) 2001 - 2005 Tensilica Inc. | |
11 | */ | |
12 | ||
13 | #ifndef _XTENSA_SIGNAL_H | |
14 | #define _XTENSA_SIGNAL_H | |
15 | ||
16 | ||
17 | #define _NSIG 64 | |
18 | #define _NSIG_BPW 32 | |
19 | #define _NSIG_WORDS (_NSIG / _NSIG_BPW) | |
20 | ||
21 | #ifndef __ASSEMBLY__ | |
22 | ||
23 | #include <linux/types.h> | |
24 | ||
25 | /* Avoid too many header ordering problems. */ | |
26 | struct siginfo; | |
27 | typedef unsigned long old_sigset_t; /* at least 32 bits */ | |
28 | typedef struct { | |
29 | unsigned long sig[_NSIG_WORDS]; | |
30 | } sigset_t; | |
31 | ||
32 | #endif | |
33 | ||
34 | #define SIGHUP 1 | |
35 | #define SIGINT 2 | |
36 | #define SIGQUIT 3 | |
37 | #define SIGILL 4 | |
38 | #define SIGTRAP 5 | |
39 | #define SIGABRT 6 | |
40 | #define SIGIOT 6 | |
41 | #define SIGBUS 7 | |
42 | #define SIGFPE 8 | |
43 | #define SIGKILL 9 | |
44 | #define SIGUSR1 10 | |
45 | #define SIGSEGV 11 | |
46 | #define SIGUSR2 12 | |
47 | #define SIGPIPE 13 | |
48 | #define SIGALRM 14 | |
49 | #define SIGTERM 15 | |
50 | #define SIGSTKFLT 16 | |
51 | #define SIGCHLD 17 | |
52 | #define SIGCONT 18 | |
53 | #define SIGSTOP 19 | |
54 | #define SIGTSTP 20 | |
55 | #define SIGTTIN 21 | |
56 | #define SIGTTOU 22 | |
57 | #define SIGURG 23 | |
58 | #define SIGXCPU 24 | |
59 | #define SIGXFSZ 25 | |
60 | #define SIGVTALRM 26 | |
61 | #define SIGPROF 27 | |
62 | #define SIGWINCH 28 | |
63 | #define SIGIO 29 | |
64 | #define SIGPOLL SIGIO | |
65 | /* #define SIGLOST 29 */ | |
66 | #define SIGPWR 30 | |
67 | #define SIGSYS 31 | |
68 | #define SIGUNUSED 31 | |
69 | ||
70 | /* These should not be considered constants from userland. */ | |
71 | #define SIGRTMIN 32 | |
72 | #define SIGRTMAX (_NSIG-1) | |
73 | ||
74 | /* | |
75 | * SA_FLAGS values: | |
76 | * | |
77 | * SA_ONSTACK indicates that a registered stack_t will be used. | |
9a8fd558 CZ |
78 | * SA_RESTART flag to get restarting signals (which were the default long ago) |
79 | * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. | |
80 | * SA_RESETHAND clears the handler when the signal is delivered. | |
81 | * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. | |
82 | * SA_NODEFER prevents the current signal from being masked in the handler. | |
83 | * | |
84 | * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single | |
85 | * Unix names RESETHAND and NODEFER respectively. | |
86 | */ | |
87 | #define SA_NOCLDSTOP 0x00000001 | |
88 | #define SA_NOCLDWAIT 0x00000002 /* not supported yet */ | |
89 | #define SA_SIGINFO 0x00000004 | |
90 | #define SA_ONSTACK 0x08000000 | |
91 | #define SA_RESTART 0x10000000 | |
92 | #define SA_NODEFER 0x40000000 | |
93 | #define SA_RESETHAND 0x80000000 | |
94 | ||
95 | #define SA_NOMASK SA_NODEFER | |
96 | #define SA_ONESHOT SA_RESETHAND | |
9a8fd558 CZ |
97 | |
98 | #define SA_RESTORER 0x04000000 | |
99 | ||
100 | /* | |
101 | * sigaltstack controls | |
102 | */ | |
103 | #define SS_ONSTACK 1 | |
104 | #define SS_DISABLE 2 | |
105 | ||
106 | #define MINSIGSTKSZ 2048 | |
107 | #define SIGSTKSZ 8192 | |
108 | ||
109 | #ifndef __ASSEMBLY__ | |
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110 | |
111 | #define SIG_BLOCK 0 /* for blocking signals */ | |
112 | #define SIG_UNBLOCK 1 /* for unblocking signals */ | |
113 | #define SIG_SETMASK 2 /* for setting the signal mask */ | |
114 | ||
115 | /* Type of a signal handler. */ | |
116 | typedef void (*__sighandler_t)(int); | |
117 | ||
118 | #define SIG_DFL ((__sighandler_t)0) /* default signal handling */ | |
119 | #define SIG_IGN ((__sighandler_t)1) /* ignore signal */ | |
120 | #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */ | |
121 | ||
122 | #ifdef __KERNEL__ | |
123 | struct old_sigaction { | |
124 | __sighandler_t sa_handler; | |
125 | old_sigset_t sa_mask; | |
126 | unsigned long sa_flags; | |
127 | void (*sa_restorer)(void); | |
128 | }; | |
129 | ||
130 | struct sigaction { | |
131 | __sighandler_t sa_handler; | |
132 | unsigned long sa_flags; | |
133 | void (*sa_restorer)(void); | |
134 | sigset_t sa_mask; /* mask last for extensibility */ | |
135 | }; | |
136 | ||
137 | struct k_sigaction { | |
138 | struct sigaction sa; | |
139 | }; | |
140 | ||
141 | #else | |
142 | ||
143 | /* Here we must cater to libcs that poke about in kernel headers. */ | |
144 | ||
145 | struct sigaction { | |
146 | union { | |
147 | __sighandler_t _sa_handler; | |
148 | void (*_sa_sigaction)(int, struct siginfo *, void *); | |
149 | } _u; | |
150 | sigset_t sa_mask; | |
151 | unsigned long sa_flags; | |
152 | void (*sa_restorer)(void); | |
153 | }; | |
154 | ||
155 | #define sa_handler _u._sa_handler | |
156 | #define sa_sigaction _u._sa_sigaction | |
157 | ||
158 | #endif /* __KERNEL__ */ | |
159 | ||
160 | typedef struct sigaltstack { | |
161 | void *ss_sp; | |
162 | int ss_flags; | |
163 | size_t ss_size; | |
164 | } stack_t; | |
165 | ||
166 | #ifdef __KERNEL__ | |
167 | #include <asm/sigcontext.h> | |
168 | #define ptrace_signal_deliver(regs, cookie) do { } while (0) | |
169 | ||
170 | #endif /* __KERNEL__ */ | |
171 | #endif /* __ASSEMBLY__ */ | |
172 | #endif /* _XTENSA_SIGNAL_H */ |