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/*
* Linux/MIPS specific definitions for signals.
*
* 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 by Ralf Baechle
*
* $Id: signal.h,v 1.2 1997/09/07 05:27:50 ralf Exp $
*/
#ifndef __ASM_MIPS_SIGNAL_H
#define __ASM_MIPS_SIGNAL_H
#include <asm/sgidefs.h>
typedef unsigned long sigset_t;
#define _NSIG 32
#define NSIG _NSIG
#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). */
/*
* sa_flags values: SA_STACK is not currently supported, but will allow the
* usage of signal stacks by using the (now obsolete) sa_restorer field in
* the sigaction structure as a stack pointer. This is now possible due to
* the changes in signal handling. LBT 010493.
* 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_SHIRQ flag is for shared interrupt support on PCI and EISA.
*/
#define SA_STACK 0x1
#define SA_ONSTACK SA_STACK
#define SA_RESTART 0x4
#define SA_NOCLDSTOP 0x20000
/* Non ABI signals */
#define SA_INTERRUPT 0x01000000
#define SA_NOMASK 0x02000000
#define SA_ONESHOT 0x04000000
#define SA_SHIRQ 0x08000000
#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.
*/
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#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;
unsigned int __pad0[3]; /* reserved, keep size constant */
/* Abi says here follows reserved int[2] */
void (*sa_restorer)(void);
#if (_MIPS_ISA == _MIPS_ISA_MIPS1) || (_MIPS_ISA == _MIPS_ISA_MIPS2)
/*
* For 32 bit code we have to pad struct sigaction to get
* constant size for the ABI
*/
int __pad1[1]; /* reserved */
#endif
};
#ifdef __KERNEL__
#include <asm/sigcontext.h>
#endif
#if defined (__KERNEL__) || defined (__USE_MISC)
/*
* 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__) || defined (__USE_MISC) */
#endif /* !defined (__ASM_MIPS_SIGNAL_H) */
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