1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * This file is subject to the terms and conditions of the GNU General Public
4 * License. See the file "COPYING" in the main directory of this archive
5 * for more details.
6 *
7 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
8 * Copyright (C) 1999 Silicon Graphics, Inc.
9 */
10#ifndef _ASM_SIGNAL_H
11#define _ASM_SIGNAL_H
12
13#include <linux/types.h>
14
15#define _NSIG 128
16#define _NSIG_BPW (sizeof(unsigned long) * 8)
17#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
18
19typedef struct {
20 unsigned long sig[_NSIG_WORDS];
21} sigset_t;
22
23typedef unsigned long old_sigset_t; /* at least 32 bits */
24
25#define SIGHUP 1 /* Hangup (POSIX). */
26#define SIGINT 2 /* Interrupt (ANSI). */
27#define SIGQUIT 3 /* Quit (POSIX). */
28#define SIGILL 4 /* Illegal instruction (ANSI). */
29#define SIGTRAP 5 /* Trace trap (POSIX). */
30#define SIGIOT 6 /* IOT trap (4.2 BSD). */
31#define SIGABRT SIGIOT /* Abort (ANSI). */
32#define SIGEMT 7
33#define SIGFPE 8 /* Floating-point exception (ANSI). */
34#define SIGKILL 9 /* Kill, unblockable (POSIX). */
35#define SIGBUS 10 /* BUS error (4.2 BSD). */
36#define SIGSEGV 11 /* Segmentation violation (ANSI). */
37#define SIGSYS 12
38#define SIGPIPE 13 /* Broken pipe (POSIX). */
39#define SIGALRM 14 /* Alarm clock (POSIX). */
40#define SIGTERM 15 /* Termination (ANSI). */
41#define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
42#define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
43#define SIGCHLD 18 /* Child status has changed (POSIX). */
44#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
45#define SIGPWR 19 /* Power failure restart (System V). */
46#define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
47#define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
48#define SIGIO 22 /* I/O now possible (4.2 BSD). */
49#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
50#define SIGSTOP 23 /* Stop, unblockable (POSIX). */
51#define SIGTSTP 24 /* Keyboard stop (POSIX). */
52#define SIGCONT 25 /* Continue (POSIX). */
53#define SIGTTIN 26 /* Background read from tty (POSIX). */
54#define SIGTTOU 27 /* Background write to tty (POSIX). */
55#define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
56#define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
57#define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
58#define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
59
60/* These should not be considered constants from userland. */
61#define SIGRTMIN 32
62#define SIGRTMAX _NSIG
63
64/*
65 * SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
66 * supported its use and no libc was using it, so the entire sa-restorer
67 * functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
68 * retaining only the SA_RESTORER definition as a reminder to avoid
69 * accidental reuse of the mask bit.
70 */
71#define SA_ONSTACK 0x08000000
72#define SA_RESETHAND 0x80000000
73#define SA_RESTART 0x10000000
74#define SA_SIGINFO 0x00000008
75#define SA_NODEFER 0x40000000
76#define SA_NOCLDWAIT 0x00010000
77#define SA_NOCLDSTOP 0x00000001
78
79#define SA_NOMASK SA_NODEFER
80#define SA_ONESHOT SA_RESETHAND
81
82#define MINSIGSTKSZ 2048
83#define SIGSTKSZ 8192
84
85
86#define SIG_BLOCK 1 /* for blocking signals */
87#define SIG_UNBLOCK 2 /* for unblocking signals */
88#define SIG_SETMASK 3 /* for setting the signal mask */
89
90#include <asm-generic/signal-defs.h>
91
92struct sigaction {
93 unsigned int sa_flags;
94 __sighandler_t sa_handler;
95 sigset_t sa_mask;
96};
97
98/* IRIX compatible stack_t */
99typedef struct sigaltstack {
100 void *ss_sp;
101 __kernel_size_t ss_size;
102 int ss_flags;
103} stack_t;
104
105
106#endif /* _ASM_SIGNAL_H */