1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * include/asm-xtensa/signal.h
4 *
5 * Swiped from SH.
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 *
11 * Copyright (C) 2001 - 2005 Tensilica Inc.
12 */
13
14 #ifndef _UAPI_XTENSA_SIGNAL_H
15 #define _UAPI_XTENSA_SIGNAL_H
16
17
18 #define _NSIG 64
19 #define _NSIG_BPW 32
20 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
21
22 #ifndef __ASSEMBLY__
23
24 #include <linux/types.h>
25
26 /* Avoid too many header ordering problems. */
27 struct siginfo;
28 typedef unsigned long old_sigset_t; /* at least 32 bits */
29 typedef struct {
30 unsigned long sig[_NSIG_WORDS];
31 } sigset_t;
32
33 #endif
34
35 #define SIGHUP 1
36 #define SIGINT 2
37 #define SIGQUIT 3
38 #define SIGILL 4
39 #define SIGTRAP 5
40 #define SIGABRT 6
41 #define SIGIOT 6
42 #define SIGBUS 7
43 #define SIGFPE 8
44 #define SIGKILL 9
45 #define SIGUSR1 10
46 #define SIGSEGV 11
47 #define SIGUSR2 12
48 #define SIGPIPE 13
49 #define SIGALRM 14
50 #define SIGTERM 15
51 #define SIGSTKFLT 16
52 #define SIGCHLD 17
53 #define SIGCONT 18
54 #define SIGSTOP 19
55 #define SIGTSTP 20
56 #define SIGTTIN 21
57 #define SIGTTOU 22
58 #define SIGURG 23
59 #define SIGXCPU 24
60 #define SIGXFSZ 25
61 #define SIGVTALRM 26
62 #define SIGPROF 27
63 #define SIGWINCH 28
64 #define SIGIO 29
65 #define SIGPOLL SIGIO
66 /* #define SIGLOST 29 */
67 #define SIGPWR 30
68 #define SIGSYS 31
69 #define SIGUNUSED 31
70
71 /* These should not be considered constants from userland. */
72 #define SIGRTMIN 32
73 #define SIGRTMAX (_NSIG-1)
74
75 /*
76 * SA_FLAGS values:
77 *
78 * SA_ONSTACK indicates that a registered stack_t will be used.
79 * SA_RESTART flag to get restarting signals (which were the default long ago)
80 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
81 * SA_RESETHAND clears the handler when the signal is delivered.
82 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
83 * SA_NODEFER prevents the current signal from being masked in the handler.
84 *
85 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
86 * Unix names RESETHAND and NODEFER respectively.
87 */
88 #define SA_NOCLDSTOP 0x00000001
89 #define SA_NOCLDWAIT 0x00000002 /* not supported yet */
90 #define SA_SIGINFO 0x00000004
91 #define SA_ONSTACK 0x08000000
92 #define SA_RESTART 0x10000000
93 #define SA_NODEFER 0x40000000
94 #define SA_RESETHAND 0x80000000
95
96 #define SA_NOMASK SA_NODEFER
97 #define SA_ONESHOT SA_RESETHAND
98
99 #define SA_RESTORER 0x04000000
100
101 #define MINSIGSTKSZ 2048
102 #define SIGSTKSZ 8192
103
104 #ifndef __ASSEMBLY__
105
106 #include <asm-generic/signal-defs.h>
107
108 #ifndef __KERNEL__
109
110 /* Here we must cater to libcs that poke about in kernel headers. */
111
112 struct sigaction {
113 union {
114 __sighandler_t _sa_handler;
115 void (*_sa_sigaction)(int, struct siginfo *, void *);
116 } _u;
117 sigset_t sa_mask;
118 unsigned long sa_flags;
119 void (*sa_restorer)(void);
120 };
121
122 #define sa_handler _u._sa_handler
123 #define sa_sigaction _u._sa_sigaction
124
125 #endif /* __KERNEL__ */
126
127 typedef struct sigaltstack {
128 void *ss_sp;
129 int ss_flags;
130 size_t ss_size;
131 } stack_t;
132
133 #endif /* __ASSEMBLY__ */
134 #endif /* _UAPI_XTENSA_SIGNAL_H */
135
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