/* $Id: signal.h,v 1.4 1998/08/18 20:46:42 ralf 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 by Ralf Baechle */ #ifndef __ASM_MIPS_SIGNAL_H #define __ASM_MIPS_SIGNAL_H #include #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_STACK 0x00000001 #define SA_RESETHAND 0x00000002 #define SA_RESTART 0x00000004 #define SA_SIGINFO 0x00000008 #define SA_NODEFER 0x00000010 #define SA_NOCLDWAIT 0x00010000 /* Not supported yet */ #define SA_NOCLDSTOP 0x00020000 #define SA_NOMASK SA_NODEFER #define SA_ONESHOT SA_RESETHAND /* * 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 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_INTERRUPT 0x01000000 /* interrupt handling */ #define SA_SHIRQ 0x08000000 #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; int sa_resv[2]; /* reserved */ }; /* XXX use sa_rev for storing ka_restorer */ struct k_sigaction { struct sigaction sa; void (*ka_restorer)(void); }; /* IRIX compatible stack_t */ typedef struct sigaltstack { void *ss_sp; size_t ss_size; int ss_flags; } stack_t; #ifdef __KERNEL__ #include #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) */