/* $Id: signal.h,v 1.2 2002/02/01 12:10:00 kjelde Exp $ * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1995, 1996, 1997, 1998, 1999 by Ralf Baechle * Copyright (C) 1999 Silicon Graphics, Inc. */#ifndef _ASM_SIGNAL_H#define _ASM_SIGNAL_H#include <linux/types.h>#define _NSIG		128#define _NSIG_BPW	32#define _NSIG_WORDS	(_NSIG / _NSIG_BPW)typedef struct {	unsigned long sig[_NSIG_WORDS];} sigset_t;typedef unsigned long old_sigset_t;		/* at least 32 bits */#define SIGHUP		 1	/* Hangup (POSIX).  */#define SIGINT		 2	/* Interrupt (ANSI).  */#define SIGQUIT		 3	/* Quit (POSIX).  */#define SIGILL		 4	/* Illegal instruction (ANSI).  */#define SIGTRAP		 5	/* Trace trap (POSIX).  */#define SIGIOT		 6	/* IOT trap (4.2 BSD).  */#define SIGABRT		 SIGIOT	/* Abort (ANSI).  */#define SIGEMT		 7#define SIGFPE		 8	/* Floating-point exception (ANSI).  */#define SIGKILL		 9	/* Kill, unblockable (POSIX).  */#define SIGBUS		10	/* BUS error (4.2 BSD).  */#define SIGSEGV		11	/* Segmentation violation (ANSI).  */#define SIGSYS		12#define SIGPIPE		13	/* Broken pipe (POSIX).  */#define SIGALRM		14	/* Alarm clock (POSIX).  */#define SIGTERM		15	/* Termination (ANSI).  */#define SIGUSR1		16	/* User-defined signal 1 (POSIX).  */#define SIGUSR2		17	/* User-defined signal 2 (POSIX).  */#define SIGCHLD		18	/* Child status has changed (POSIX).  */#define SIGCLD		SIGCHLD	/* Same as SIGCHLD (System V).  */#define SIGPWR		19	/* Power failure restart (System V).  */#define SIGWINCH	20	/* Window size change (4.3 BSD, Sun).  */#define SIGURG		21	/* Urgent condition on socket (4.2 BSD).  */#define SIGIO		22	/* I/O now possible (4.2 BSD).  */#define SIGPOLL		SIGIO	/* Pollable event occurred (System V).  */#define SIGSTOP		23	/* Stop, unblockable (POSIX).  */#define SIGTSTP		24	/* Keyboard stop (POSIX).  */#define SIGCONT		25	/* Continue (POSIX).  */#define SIGTTIN		26	/* Background read from tty (POSIX).  */#define SIGTTOU		27	/* Background write to tty (POSIX).  */#define SIGVTALRM	28	/* Virtual alarm clock (4.2 BSD).  */#define SIGPROF		29	/* Profiling alarm clock (4.2 BSD).  */#define SIGXCPU		30	/* CPU limit exceeded (4.2 BSD).  */#define SIGXFSZ		31	/* File size limit exceeded (4.2 BSD).  *//* These should not be considered constants from userland.  */#define SIGRTMIN	32#define SIGRTMAX	(_NSIG-1)/* * SA_FLAGS values: * * SA_ONSTACK indicates that a registered stack_t will be used. * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the * SA_RESTART flag to get restarting signals (which were the default long ago) * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. * SA_RESETHAND clears the handler when the signal is delivered. * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. * SA_NODEFER prevents the current signal from being masked in the handler. * * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single * Unix names RESETHAND and NODEFER respectively. */#define SA_ONSTACK	0x08000000#define SA_RESETHAND	0x80000000#define SA_RESTART	0x10000000#define SA_SIGINFO	0x00000008#define SA_NODEFER	0x40000000#define SA_NOCLDWAIT	0x00010000	/* Not supported yet */#define SA_NOCLDSTOP	0x00000001#define SA_NOMASK	SA_NODEFER#define SA_ONESHOT	SA_RESETHAND#define SA_INTERRUPT	0x20000000	/* dummy -- ignored */#define SA_RESTORER	0x04000000/*  * sigaltstack controls */#define SS_ONSTACK     1#define SS_DISABLE     2#define MINSIGSTKSZ    2048#define SIGSTKSZ       8192#ifdef __KERNEL__/* * These values of sa_flags are used only by the kernel as part of the * irq handling routines. * * SA_INTERRUPT is also used by the irq handling routines. * SA_SHIRQ flag is for shared interrupt support on PCI and EISA. */#define SA_PROBE		SA_ONESHOT#define SA_SAMPLE_RANDOM	SA_RESTART#define SA_SHIRQ		0x02000000#endif /* __KERNEL__ */#define SIG_BLOCK	1	/* for blocking signals */#define SIG_UNBLOCK	2	/* for unblocking signals */#define SIG_SETMASK	3	/* for setting the signal mask */#define SIG_SETMASK32	256	/* Goodie from SGI for BSD compatibility:				   set only the low 32 bit of the sigset.  *//* Type of a signal handler.  */typedef void (*__sighandler_t)(int);/* Fake signal functions */#define SIG_DFL	((__sighandler_t)0)	/* default signal handling */#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */#define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */struct sigaction {	unsigned int	sa_flags;	__sighandler_t	sa_handler;	sigset_t	sa_mask;	void		(*sa_restorer)(void);	int		sa_resv[1];	/* reserved */};struct k_sigaction {	struct sigaction sa;};/* IRIX compatible stack_t  */typedef struct sigaltstack {	void *ss_sp;	size_t ss_size;	int ss_flags;} stack_t;#ifdef __KERNEL__// #include <asm/sigcontext.h>/* * The following break codes are or were in use for specific purposes in * other MIPS operating systems.  Linux/MIPS doesn't use all of them.  The * unused ones are here as placeholders; we might encounter them in * non-Linux/MIPS object files or make use of them in the future. */#define BRK_USERBP	0	/* User bp (used by debuggers) */#define BRK_KERNELBP	1	/* Break in the kernel */#define BRK_ABORT	2	/* Sometimes used by abort(3) to SIGIOT */#define BRK_BD_TAKEN	3	/* For bd slot emulation - not implemented */#define BRK_BD_NOTTAKEN	4	/* For bd slot emulation - not implemented */#define BRK_SSTEPBP	5	/* User bp (used by debuggers) */#define BRK_OVERFLOW	6	/* Overflow check */#define BRK_DIVZERO	7	/* Divide by zero check */#define BRK_RANGE	8	/* Range error check */#define BRK_STACKOVERFLOW 9	/* For Ada stackchecking */#define BRK_NORLD	10	/* No rld found - not used by Linux/MIPS */#define _BRK_THREADBP	11	/* For threads, user bp (used by debuggers) */#define BRK_MULOVF	1023	/* Multiply overflow */#endif /* defined (__KERNEL__) */#endif /* _ASM_SIGNAL_H */