2 * include/asm-xtensa/signal.h
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
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
13 #ifndef _XTENSA_SIGNAL_H
14 #define _XTENSA_SIGNAL_H
19 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
23 #include <linux/types.h>
25 /* Avoid too many header ordering problems. */
27 typedef unsigned long old_sigset_t
; /* at least 32 bits */
29 unsigned long sig
[_NSIG_WORDS
];
65 /* #define SIGLOST 29 */
70 /* These should not be considered constants from userland. */
72 #define SIGRTMAX (_NSIG-1)
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
106 #define MINSIGSTKSZ 2048
107 #define SIGSTKSZ 8192
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 */
124 __sighandler_t sa_handler
;
125 unsigned long sa_flags
;
126 void (*sa_restorer
)(void);
127 sigset_t sa_mask
; /* mask last for extensibility */
136 /* Here we must cater to libcs that poke about in kernel headers. */
140 __sighandler_t _sa_handler
;
141 void (*_sa_sigaction
)(int, struct siginfo
*, void *);
144 unsigned long sa_flags
;
145 void (*sa_restorer
)(void);
148 #define sa_handler _u._sa_handler
149 #define sa_sigaction _u._sa_sigaction
151 #endif /* __KERNEL__ */
153 typedef struct sigaltstack
{
160 #include <asm/sigcontext.h>
161 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
163 #endif /* __KERNEL__ */
164 #endif /* __ASSEMBLY__ */
165 #endif /* _XTENSA_SIGNAL_H */