signal.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:6k
- /*
- * 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 */