[linux.git] / include / asm-mips / signal.h

/*
 * 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, 96, 97, 98, 99, 2003 by Ralf Baechle
 * Copyright (C) 1999 Silicon Graphics, Inc.
 */
#ifndef _ASM_SIGNAL_H
#define _ASM_SIGNAL_H

#include <linux/config.h>
#include <linux/types.h>

#define _NSIG		128
#define _NSIG_BPW	(sizeof(unsigned long) * 8)
#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

/*
 * 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
#define SA_NOCLDSTOP	0x00000001

#define SA_NOMASK	SA_NODEFER
#define SA_ONESHOT	SA_RESETHAND
#define SA_INTERRUPT	0x20000000	/* dummy -- ignored */

#define SA_RESTORER	0x04000000	/* Only for o32 */

/*
 * 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_SAMPLE_RANDOM	SA_RESTART

#ifdef CONFIG_TRAD_SIGNALS
#define sig_uses_siginfo(ka)	((ka)->sa.sa_flags & SA_SIGINFO)
#else
#define sig_uses_siginfo(ka)	(1)
#endif

#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 __signalfn_t(int);
typedef __signalfn_t __user *__sighandler_t;

/* 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;
};

struct k_sigaction {
	struct sigaction sa;
#ifdef CONFIG_BINFMT_IRIX
	void		(*sa_restorer)(void);
#endif
};

/* 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 */
#define BRK_BUG		512	/* Used by BUG() */

#define ptrace_signal_deliver(regs, cookie) do { } while (0)

#endif /* __KERNEL__ */

#endif /* _ASM_SIGNAL_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1995, 96, 97, 98, 99, 2003 by Ralf Baechle
	7	* Copyright (C) 1999 Silicon Graphics, Inc.
	8	*/
	9	#ifndef _ASM_SIGNAL_H
	10	#define _ASM_SIGNAL_H
	11
	12	#include <linux/config.h>
	13	#include <linux/types.h>
	14
	15	#define _NSIG 128
	16	#define _NSIG_BPW (sizeof(unsigned long) * 8)
	17	#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
	18
	19	typedef struct {
	20	unsigned long sig[_NSIG_WORDS];
	21	} sigset_t;
	22
	23	typedef unsigned long old_sigset_t; /* at least 32 bits */
	24
	25	#define SIGHUP 1 /* Hangup (POSIX). */
	26	#define SIGINT 2 /* Interrupt (ANSI). */
	27	#define SIGQUIT 3 /* Quit (POSIX). */
	28	#define SIGILL 4 /* Illegal instruction (ANSI). */
	29	#define SIGTRAP 5 /* Trace trap (POSIX). */
	30	#define SIGIOT 6 /* IOT trap (4.2 BSD). */
	31	#define SIGABRT SIGIOT /* Abort (ANSI). */
	32	#define SIGEMT 7
	33	#define SIGFPE 8 /* Floating-point exception (ANSI). */
	34	#define SIGKILL 9 /* Kill, unblockable (POSIX). */
	35	#define SIGBUS 10 /* BUS error (4.2 BSD). */
	36	#define SIGSEGV 11 /* Segmentation violation (ANSI). */
	37	#define SIGSYS 12
	38	#define SIGPIPE 13 /* Broken pipe (POSIX). */
	39	#define SIGALRM 14 /* Alarm clock (POSIX). */
	40	#define SIGTERM 15 /* Termination (ANSI). */
	41	#define SIGUSR1 16 /* User-defined signal 1 (POSIX). */
	42	#define SIGUSR2 17 /* User-defined signal 2 (POSIX). */
	43	#define SIGCHLD 18 /* Child status has changed (POSIX). */
	44	#define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
	45	#define SIGPWR 19 /* Power failure restart (System V). */
	46	#define SIGWINCH 20 /* Window size change (4.3 BSD, Sun). */
	47	#define SIGURG 21 /* Urgent condition on socket (4.2 BSD). */
	48	#define SIGIO 22 /* I/O now possible (4.2 BSD). */
	49	#define SIGPOLL SIGIO /* Pollable event occurred (System V). */
	50	#define SIGSTOP 23 /* Stop, unblockable (POSIX). */
	51	#define SIGTSTP 24 /* Keyboard stop (POSIX). */
	52	#define SIGCONT 25 /* Continue (POSIX). */
	53	#define SIGTTIN 26 /* Background read from tty (POSIX). */
	54	#define SIGTTOU 27 /* Background write to tty (POSIX). */
	55	#define SIGVTALRM 28 /* Virtual alarm clock (4.2 BSD). */
	56	#define SIGPROF 29 /* Profiling alarm clock (4.2 BSD). */
	57	#define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */
	58	#define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */
	59
	60	/* These should not be considered constants from userland. */
	61	#define SIGRTMIN 32
	62	#define SIGRTMAX _NSIG
	63
	64	/*
65	* SA_FLAGS values:
66	*
67	* SA_ONSTACK indicates that a registered stack_t will be used.
68	* SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
69	* SA_RESTART flag to get restarting signals (which were the default long ago)
70	* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
71	* SA_RESETHAND clears the handler when the signal is delivered.
72	* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
73	* SA_NODEFER prevents the current signal from being masked in the handler.
74	*
75	* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
76	* Unix names RESETHAND and NODEFER respectively.
77	*/
78	#define SA_ONSTACK 0x08000000
79	#define SA_RESETHAND 0x80000000
80	#define SA_RESTART 0x10000000
81	#define SA_SIGINFO 0x00000008
82	#define SA_NODEFER 0x40000000
83	#define SA_NOCLDWAIT 0x00010000
84	#define SA_NOCLDSTOP 0x00000001
85
86	#define SA_NOMASK SA_NODEFER
87	#define SA_ONESHOT SA_RESETHAND
88	#define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
89
90	#define SA_RESTORER 0x04000000 /* Only for o32 */
91
92	/*
93	* sigaltstack controls
94	*/
95	#define SS_ONSTACK 1
96	#define SS_DISABLE 2
97
98	#define MINSIGSTKSZ 2048
99	#define SIGSTKSZ 8192
100
e50c0a8f RB	101	#ifdef __KERNEL__
	102
	103	/*
	104	* These values of sa_flags are used only by the kernel as part of the
	105	* irq handling routines.
	106	*
	107	* SA_INTERRUPT is also used by the irq handling routines.
	108	* SA_SHIRQ flag is for shared interrupt support on PCI and EISA.
	109	*/
	110	#define SA_SAMPLE_RANDOM SA_RESTART
	111
	112	#ifdef CONFIG_TRAD_SIGNALS
	113	#define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO)
	114	#else
	115	#define sig_uses_siginfo(ka) (1)
	116	#endif
	117
	118	#endif /* __KERNEL__ */
	119
1da177e4 LT	120	#define SIG_BLOCK 1 /* for blocking signals */
	121	#define SIG_UNBLOCK 2 /* for unblocking signals */
	122	#define SIG_SETMASK 3 /* for setting the signal mask */
	123	#define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
	124	set only the low 32 bit of the sigset. */
e50c0a8f RB	125
	126	/* Type of a signal handler. */
	127	typedef void __signalfn_t(int);
	128	typedef __signalfn_t __user *__sighandler_t;
	129
	130	/* Fake signal functions */
	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 */
1da177e4 LT	134
	135	struct sigaction {
	136	unsigned int sa_flags;
	137	__sighandler_t sa_handler;
	138	sigset_t sa_mask;
	139	};
	140
	141	struct k_sigaction {
	142	struct sigaction sa;
	143	#ifdef CONFIG_BINFMT_IRIX
	144	void (*sa_restorer)(void);
	145	#endif
	146	};
	147
	148	/* IRIX compatible stack_t */
	149	typedef struct sigaltstack {
	150	void *ss_sp;
	151	size_t ss_size;
	152	int ss_flags;
	153	} stack_t;
	154
	155	#ifdef __KERNEL__
	156	#include <asm/sigcontext.h>
	157
	158	/*
	159	* The following break codes are or were in use for specific purposes in
	160	* other MIPS operating systems. Linux/MIPS doesn't use all of them. The
	161	* unused ones are here as placeholders; we might encounter them in
	162	* non-Linux/MIPS object files or make use of them in the future.
	163	*/
	164	#define BRK_USERBP 0 /* User bp (used by debuggers) */
	165	#define BRK_KERNELBP 1 /* Break in the kernel */
	166	#define BRK_ABORT 2 /* Sometimes used by abort(3) to SIGIOT */
	167	#define BRK_BD_TAKEN 3 /* For bd slot emulation - not implemented */
	168	#define BRK_BD_NOTTAKEN 4 /* For bd slot emulation - not implemented */
	169	#define BRK_SSTEPBP 5 /* User bp (used by debuggers) */
	170	#define BRK_OVERFLOW 6 /* Overflow check */
	171	#define BRK_DIVZERO 7 /* Divide by zero check */
	172	#define BRK_RANGE 8 /* Range error check */
	173	#define BRK_STACKOVERFLOW 9 /* For Ada stackchecking */
	174	#define BRK_NORLD 10 /* No rld found - not used by Linux/MIPS */
	175	#define _BRK_THREADBP 11 /* For threads, user bp (used by debuggers) */
	176	#define BRK_MULOVF 1023 /* Multiply overflow */
	177	#define BRK_BUG 512 /* Used by BUG() */
	178
	179	#define ptrace_signal_deliver(regs, cookie) do { } while (0)
	180
	181	#endif /* __KERNEL__ */
	182
	183	#endif /* _ASM_SIGNAL_H */