fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-xtensa / signal.h
blob633ba73bc4d21ee924086f903cc75abf8cbeb06d
1 /*
2 * include/asm-xtensa/signal.h
4 * Swiped from SH.
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
13 #ifndef _XTENSA_SIGNAL_H
14 #define _XTENSA_SIGNAL_H
17 #define _NSIG 64
18 #define _NSIG_BPW 32
19 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
21 #ifndef __ASSEMBLY__
23 #include <linux/types.h>
25 /* Avoid too many header ordering problems. */
26 struct siginfo;
27 typedef unsigned long old_sigset_t; /* at least 32 bits */
28 typedef struct {
29 unsigned long sig[_NSIG_WORDS];
30 } sigset_t;
32 #endif
34 #define SIGHUP 1
35 #define SIGINT 2
36 #define SIGQUIT 3
37 #define SIGILL 4
38 #define SIGTRAP 5
39 #define SIGABRT 6
40 #define SIGIOT 6
41 #define SIGBUS 7
42 #define SIGFPE 8
43 #define SIGKILL 9
44 #define SIGUSR1 10
45 #define SIGSEGV 11
46 #define SIGUSR2 12
47 #define SIGPIPE 13
48 #define SIGALRM 14
49 #define SIGTERM 15
50 #define SIGSTKFLT 16
51 #define SIGCHLD 17
52 #define SIGCONT 18
53 #define SIGSTOP 19
54 #define SIGTSTP 20
55 #define SIGTTIN 21
56 #define SIGTTOU 22
57 #define SIGURG 23
58 #define SIGXCPU 24
59 #define SIGXFSZ 25
60 #define SIGVTALRM 26
61 #define SIGPROF 27
62 #define SIGWINCH 28
63 #define SIGIO 29
64 #define SIGPOLL SIGIO
65 /* #define SIGLOST 29 */
66 #define SIGPWR 30
67 #define SIGSYS 31
68 #define SIGUNUSED 31
70 /* These should not be considered constants from userland. */
71 #define SIGRTMIN 32
72 #define SIGRTMAX (_NSIG-1)
75 * SA_FLAGS values:
77 * SA_ONSTACK indicates that a registered stack_t will be used.
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.
84 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
85 * Unix names RESETHAND and NODEFER respectively.
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
95 #define SA_NOMASK SA_NODEFER
96 #define SA_ONESHOT SA_RESETHAND
98 #define SA_RESTORER 0x04000000
101 * sigaltstack controls
103 #define SS_ONSTACK 1
104 #define SS_DISABLE 2
106 #define MINSIGSTKSZ 2048
107 #define SIGSTKSZ 8192
109 #ifndef __ASSEMBLY__
111 #define SIG_BLOCK 0 /* for blocking signals */
112 #define SIG_UNBLOCK 1 /* for unblocking signals */
113 #define SIG_SETMASK 2 /* for setting the signal mask */
115 /* Type of a signal handler. */
116 typedef void (*__sighandler_t)(int);
118 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
119 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
120 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
122 #ifdef __KERNEL__
123 struct old_sigaction {
124 __sighandler_t sa_handler;
125 old_sigset_t sa_mask;
126 unsigned long sa_flags;
127 void (*sa_restorer)(void);
130 struct sigaction {
131 __sighandler_t sa_handler;
132 unsigned long sa_flags;
133 void (*sa_restorer)(void);
134 sigset_t sa_mask; /* mask last for extensibility */
137 struct k_sigaction {
138 struct sigaction sa;
141 #else
143 /* Here we must cater to libcs that poke about in kernel headers. */
145 struct sigaction {
146 union {
147 __sighandler_t _sa_handler;
148 void (*_sa_sigaction)(int, struct siginfo *, void *);
149 } _u;
150 sigset_t sa_mask;
151 unsigned long sa_flags;
152 void (*sa_restorer)(void);
155 #define sa_handler _u._sa_handler
156 #define sa_sigaction _u._sa_sigaction
158 #endif /* __KERNEL__ */
160 typedef struct sigaltstack {
161 void *ss_sp;
162 int ss_flags;
163 size_t ss_size;
164 } stack_t;
166 #ifdef __KERNEL__
167 #include <asm/sigcontext.h>
168 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
170 #endif /* __KERNEL__ */
171 #endif /* __ASSEMBLY__ */
172 #endif /* _XTENSA_SIGNAL_H */