1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
7 * Copyright (C) 1999 Silicon Graphics, Inc.
8 */
9#ifndef _ASM_SIGNAL_H
10#define _ASM_SIGNAL_H
11
12#include <linux/types.h>
13
14#define _NSIG		128
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_FLAGS values:
66 *
67 * SA_ONSTACK indicates that a registered stack_t will be used.
68 * SA_RESTART flag to get restarting signals (which were the default long ago)
69 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
70 * SA_RESETHAND clears the handler when the signal is delivered.
71 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
72 * SA_NODEFER prevents the current signal from being masked in the handler.
73 *
74 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
75 * Unix names RESETHAND and NODEFER respectively.
76 */
77#define SA_ONSTACK	0x08000000
78#define SA_RESETHAND	0x80000000
79#define SA_RESTART	0x10000000
80#define SA_SIGINFO	0x00000008
81#define SA_NODEFER	0x40000000
82#define SA_NOCLDWAIT	0x00010000
83#define SA_NOCLDSTOP	0x00000001
84
85#define SA_NOMASK	SA_NODEFER
86#define SA_ONESHOT	SA_RESETHAND
87
88#define SA_RESTORER	0x04000000	/* Only for o32 */
89
90/*
91 * sigaltstack controls
92 */
93#define SS_ONSTACK     1
94#define SS_DISABLE     2
95
96#define MINSIGSTKSZ    2048
97#define SIGSTKSZ       8192
98
99#ifdef __KERNEL__
100
101#ifdef CONFIG_TRAD_SIGNALS
102#define sig_uses_siginfo(ka)	((ka)->sa.sa_flags & SA_SIGINFO)
103#else
104#define sig_uses_siginfo(ka)	(1)
105#endif
106#else
107/*This declaration prevents the compiler warning generated by using the pointer
108to siginfo in struct sigaction below */
109struct siginfo;
110#endif /* __KERNEL__ */
111
112#define SIG_BLOCK	1	/* for blocking signals */
113#define SIG_UNBLOCK	2	/* for unblocking signals */
114#define SIG_SETMASK	3	/* for setting the signal mask */
115
116#include <asm-generic/signal.h>
117
118struct sigaction {
119 unsigned int sa_flags;
120 union {
121	 __sighandler_t sa_handler;				/* !SA_SIGINFO */
122	 void (*sa_sigaction) (int, struct siginfo *, void *);	/* SA_SIGINFO */
123 } __sigaction_handler;
124#define sa_handler    __sigaction_handler.sa_handler
125#define sa_sigaction  __sigaction_handler.sa_sigaction
126 sigset_t sa_mask;
127};
128
129struct k_sigaction {
130 struct sigaction sa;
131};
132
133typedef struct sigaltstack {
134 void  *ss_sp;
135 size_t ss_size;
136 int ss_flags;
137} stack_t;
138
139#ifdef __KERNEL__
140#include <asm/sigcontext.h>
141#include <asm/siginfo.h>
142
143#define ptrace_signal_deliver(regs, cookie) do { } while (0)
144
145#endif /* __KERNEL__ */
146
147#endif /* _ASM_SIGNAL_H */
148