1#ifndef _ASMARM_SIGNAL_H
2#define _ASMARM_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	32
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#define SIGSWI		32
74
75/*
76 * SA_FLAGS values:
77 *
78 * SA_NOCLDSTOP		flag to turn off SIGCHLD when children stop.
79 * SA_NOCLDWAIT		flag on SIGCHLD to inhibit zombies.
80 * SA_SIGINFO		deliver the signal with SIGINFO structs
81 * SA_THIRTYTWO		delivers the signal in 32-bit mode, even if the task
82 *			is running in 26-bit.
83 * SA_ONSTACK		allows alternate signal stacks (see sigaltstack(2)).
84 * SA_RESTART		flag to get restarting signals (which were the default long ago)
85 * SA_INTERRUPT		is a no-op, but left due to historical reasons. Use the
86 * SA_NODEFER		prevents the current signal from being masked in the handler.
87 * SA_RESETHAND		clears the handler when the signal is delivered.
88 *
89 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
90 * Unix names RESETHAND and NODEFER respectively.
91 */
92#define SA_NOCLDSTOP	0x00000001
93#define SA_NOCLDWAIT	0x00000002 /* not supported yet */
94#define SA_SIGINFO	0x00000004
95#define SA_THIRTYTWO	0x02000000
96#define SA_RESTORER	0x04000000
97#define SA_ONSTACK	0x08000000
98#define SA_RESTART	0x10000000
99#define SA_NODEFER	0x40000000
100#define SA_RESETHAND	0x80000000
101
102#define SA_NOMASK	SA_NODEFER
103#define SA_ONESHOT	SA_RESETHAND
104#define SA_INTERRUPT	0x20000000 /* dummy -- ignored */
105
106
107/*
108 * sigaltstack controls
109 */
110#define SS_ONSTACK	1
111#define SS_DISABLE	2
112
113#define MINSIGSTKSZ	2048
114#define SIGSTKSZ	8192
115
116#ifdef __KERNEL__
117
118/*
119 * These values of sa_flags are used only by the kernel as part of the
120 * irq handling routines.
121 *
122 * SA_INTERRUPT is also used by the irq handling routines.
123 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
124 */
125#define SA_PROBE		0x80000000
126#define SA_SAMPLE_RANDOM	0x10000000
127#define SA_IRQNOMASK		0x08000000
128#define SA_SHIRQ		0x04000000
129#endif
130
131#define SIG_BLOCK          0	/* for blocking signals */
132#define SIG_UNBLOCK        1	/* for unblocking signals */
133#define SIG_SETMASK        2	/* for setting the signal mask */
134
135/* Type of a signal handler.  */
136typedef void (*__sighandler_t)(int);
137
138#define SIG_DFL	((__sighandler_t)0)	/* default signal handling */
139#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
140#define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */
141
142#ifdef __KERNEL__
143struct old_sigaction {
144	__sighandler_t sa_handler;
145	old_sigset_t sa_mask;
146	unsigned long sa_flags;
147	void (*sa_restorer)(void);
148};
149
150struct sigaction {
151	__sighandler_t sa_handler;
152	unsigned long sa_flags;
153	void (*sa_restorer)(void);
154	sigset_t sa_mask;		/* mask last for extensibility */
155};
156
157struct k_sigaction {
158	struct sigaction sa;
159};
160
161#else
162/* Here we must cater to libcs that poke about in kernel headers.  */
163
164struct sigaction {
165	union {
166	  __sighandler_t _sa_handler;
167	  void (*_sa_sigaction)(int, struct siginfo *, void *);
168	} _u;
169	sigset_t sa_mask;
170	unsigned long sa_flags;
171	void (*sa_restorer)(void);
172};
173
174#define sa_handler	_u._sa_handler
175#define sa_sigaction	_u._sa_sigaction
176
177#endif /* __KERNEL__ */
178
179typedef struct sigaltstack {
180	void *ss_sp;
181	int ss_flags;
182	size_t ss_size;
183} stack_t;
184
185#ifdef __KERNEL__
186#include <asm/sigcontext.h>
187
188#define sigmask(sig)	(1UL << ((sig) - 1))
189
190#endif
191
192#endif
193