1#ifndef _ASMx86_64_SIGNAL_H
2#define _ASMx86_64_SIGNAL_H
3
4#include <linux/types.h>
5
6/* Avoid too many header ordering problems.  */
7struct siginfo;
8
9#ifdef __KERNEL__
10/* Most things should be clean enough to redefine this at will, if care
11   is taken to make libc match.  */
12
13#define _NSIG		64
14#define _NSIG_BPW	64
15#define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
16
17typedef unsigned long old_sigset_t;		/* at least 32 bits */
18
19typedef struct {
20	unsigned long sig[_NSIG_WORDS];
21} sigset_t;
22
23#else
24/* Here we must cater to libcs that poke about in kernel headers.  */
25
26#define NSIG		32
27typedef unsigned long sigset_t;
28
29#endif /* __KERNEL__ */
30
31#define SIGHUP		 1
32#define SIGINT		 2
33#define SIGQUIT		 3
34#define SIGILL		 4
35#define SIGTRAP		 5
36#define SIGABRT		 6
37#define SIGIOT		 6
38#define SIGBUS		 7
39#define SIGFPE		 8
40#define SIGKILL		 9
41#define SIGUSR1		10
42#define SIGSEGV		11
43#define SIGUSR2		12
44#define SIGPIPE		13
45#define SIGALRM		14
46#define SIGTERM		15
47#define SIGSTKFLT	16
48#define SIGCHLD		17
49#define SIGCONT		18
50#define SIGSTOP		19
51#define SIGTSTP		20
52#define SIGTTIN		21
53#define SIGTTOU		22
54#define SIGURG		23
55#define SIGXCPU		24
56#define SIGXFSZ		25
57#define SIGVTALRM	26
58#define SIGPROF		27
59#define SIGWINCH	28
60#define SIGIO		29
61#define SIGPOLL		SIGIO
62/*
63#define SIGLOST		29
64*/
65#define SIGPWR		30
66#define SIGSYS		31
67#define	SIGUNUSED	31
68
69/* These should not be considered constants from userland.  */
70#define SIGRTMIN	32
71#define SIGRTMAX	(_NSIG-1)
72
73/*
74 * SA_FLAGS values:
75 *
76 * SA_ONSTACK indicates that a registered stack_t will be used.
77 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
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
97#define SA_INTERRUPT	0x20000000 /* dummy -- ignored */
98
99#define SA_RESTORER	0x04000000
100
101/*
102 * sigaltstack controls
103 */
104#define SS_ONSTACK	1
105#define SS_DISABLE	2
106
107#define MINSIGSTKSZ	2048
108#define SIGSTKSZ	8192
109
110#ifdef __KERNEL__
111
112/*
113 * These values of sa_flags are used only by the kernel as part of the
114 * irq handling routines.
115 *
116 * SA_INTERRUPT is also used by the irq handling routines.
117 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
118 */
119#define SA_PROBE		SA_ONESHOT
120#define SA_SAMPLE_RANDOM	SA_RESTART
121#define SA_SHIRQ		0x04000000
122#endif
123
124#define SIG_BLOCK          0	/* for blocking signals */
125#define SIG_UNBLOCK        1	/* for unblocking signals */
126#define SIG_SETMASK        2	/* for setting the signal mask */
127
128/* Type of a signal handler.  */
129typedef void (*__sighandler_t)(int);
130
131#define SIG_DFL	((__sighandler_t)0)	/* default signal handling */
132#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
133#define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */
134
135struct sigaction {
136	__sighandler_t sa_handler;
137	unsigned long sa_flags;
138	void (*sa_restorer)(void);
139	sigset_t sa_mask;		/* mask last for extensibility */
140};
141
142struct k_sigaction {
143	struct sigaction sa;
144};
145
146typedef struct sigaltstack {
147	void *ss_sp;
148	int ss_flags;
149	size_t ss_size;
150} stack_t;
151
152#ifdef __KERNEL__
153#include <asm/sigcontext.h>
154
155#undef __HAVE_ARCH_SIG_BITOPS
156#endif /* __KERNEL__ */
157
158#endif
159