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Annotation of 42BSD/sys/h/signal.h, revision 1.1.1.1

1.1       root        1: /*     signal.h        6.1     83/08/14        */
                      2: 
                      3: #ifndef        NSIG
                      4: #define NSIG   32
                      5: 
                      6: #define        SIGHUP  1       /* hangup */
                      7: #define        SIGINT  2       /* interrupt */
                      8: #define        SIGQUIT 3       /* quit */
                      9: #define        SIGILL  4       /* illegal instruction (not reset when caught) */
                     10: #define            ILL_RESAD_FAULT     0x0     /* reserved addressing fault */
                     11: #define            ILL_PRIVIN_FAULT    0x1     /* privileged instruction fault */
                     12: #define            ILL_RESOP_FAULT     0x2     /* reserved operand fault */
                     13: /* CHME, CHMS, CHMU are not yet given back to users reasonably */
                     14: #define        SIGTRAP 5       /* trace trap (not reset when caught) */
                     15: #define        SIGIOT  6       /* IOT instruction */
                     16: #define        SIGEMT  7       /* EMT instruction */
                     17: #define        SIGFPE  8       /* floating point exception */
                     18: #define            FPE_INTOVF_TRAP     0x1     /* integer overflow */
                     19: #define            FPE_INTDIV_TRAP     0x2     /* integer divide by zero */
                     20: #define            FPE_FLTOVF_TRAP     0x3     /* floating overflow */
                     21: #define            FPE_FLTDIV_TRAP     0x4     /* floating/decimal divide by zero */
                     22: #define            FPE_FLTUND_TRAP     0x5     /* floating underflow */
                     23: #define            FPE_DECOVF_TRAP     0x6     /* decimal overflow */
                     24: #define            FPE_SUBRNG_TRAP     0x7     /* subscript out of range */
                     25: #define            FPE_FLTOVF_FAULT    0x8     /* floating overflow fault */
                     26: #define            FPE_FLTDIV_FAULT    0x9     /* divide by zero floating fault */
                     27: #define            FPE_FLTUND_FAULT    0xa     /* floating underflow fault */
                     28: #define        SIGKILL 9       /* kill (cannot be caught or ignored) */
                     29: #define        SIGBUS  10      /* bus error */
                     30: #define        SIGSEGV 11      /* segmentation violation */
                     31: #define        SIGSYS  12      /* bad argument to system call */
                     32: #define        SIGPIPE 13      /* write on a pipe with no one to read it */
                     33: #define        SIGALRM 14      /* alarm clock */
                     34: #define        SIGTERM 15      /* software termination signal from kill */
                     35: #define        SIGURG  16      /* urgent condition on IO channel */
                     36: #define        SIGSTOP 17      /* sendable stop signal not from tty */
                     37: #define        SIGTSTP 18      /* stop signal from tty */
                     38: #define        SIGCONT 19      /* continue a stopped process */
                     39: #define        SIGCHLD 20      /* to parent on child stop or exit */
                     40: #define        SIGTTIN 21      /* to readers pgrp upon background tty read */
                     41: #define        SIGTTOU 22      /* like TTIN for output if (tp->t_local&LTOSTOP) */
                     42: #define        SIGIO   23      /* input/output possible signal */
                     43: #define        SIGXCPU 24      /* exceeded CPU time limit */
                     44: #define        SIGXFSZ 25      /* exceeded file size limit */
                     45: #define        SIGVTALRM 26    /* virtual time alarm */
                     46: #define        SIGPROF 27      /* profiling time alarm */
                     47: 
                     48: #ifndef KERNEL
                     49: int    (*signal())();
                     50: #endif
                     51: 
                     52: /*
                     53:  * Signal vector "template" used in sigvec call.
                     54:  */
                     55: struct sigvec {
                     56:        int     (*sv_handler)();        /* signal handler */
                     57:        int     sv_mask;                /* signal mask to apply */
                     58:        int     sv_onstack;             /* if non-zero, take on signal stack */
                     59: };
                     60: 
                     61: /*
                     62:  * Structure used in sigstack call.
                     63:  */
                     64: struct sigstack {
                     65:        char    *ss_sp;                 /* signal stack pointer */
                     66:        int     ss_onstack;             /* current status */
                     67: };
                     68: 
                     69: /*
                     70:  * Information pushed on stack when a signal is delivered.
                     71:  * This is used by the kernel to restore state following
                     72:  * execution of the signal handler.  It is also made available
                     73:  * to the handler to allow it to properly restore state if
                     74:  * a non-standard exit is performed.
                     75:  */
                     76: struct sigcontext {
                     77:        int     sc_onstack;             /* sigstack state to restore */
                     78:        int     sc_mask;                /* signal mask to restore */
                     79:        int     sc_sp;                  /* sp to restore */
                     80:        int     sc_pc;                  /* pc to retore */
                     81:        int     sc_ps;                  /* psl to restore */
                     82: };
                     83: 
                     84: #define        BADSIG          (int (*)())-1
                     85: #define        SIG_DFL         (int (*)())0
                     86: #define        SIG_IGN         (int (*)())1
                     87: 
                     88: #ifdef KERNEL
                     89: #define        SIG_CATCH       (int (*)())2
                     90: #define        SIG_HOLD        (int (*)())3
                     91: #endif
                     92: #endif

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