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1.1 root 1: /*
2: * Copyright (c) 1982, 1986 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: *
6: * @(#)signal.h 7.1 (Berkeley) 6/4/86
7: */
8:
9: #ifndef NSIG
10: #define NSIG 32
11:
12: #define SIGHUP 1 /* hangup */
13: #define SIGINT 2 /* interrupt */
14: #define SIGQUIT 3 /* quit */
15: #define SIGILL 4 /* illegal instruction (not reset when caught) */
16: #define ILL_RESAD_FAULT 0x0 /* reserved addressing fault */
17: #define ILL_PRIVIN_FAULT 0x1 /* privileged instruction fault */
18: #define ILL_RESOP_FAULT 0x2 /* reserved operand fault */
19: /* CHME, CHMS, CHMU are not yet given back to users reasonably */
20: #define SIGTRAP 5 /* trace trap (not reset when caught) */
21: #define SIGIOT 6 /* IOT instruction */
22: #define SIGABRT SIGIOT /* compatibility */
23: #define SIGEMT 7 /* EMT instruction */
24: #define SIGFPE 8 /* floating point exception */
25: #define FPE_INTOVF_TRAP 0x1 /* integer overflow */
26: #define FPE_INTDIV_TRAP 0x2 /* integer divide by zero */
27: #define FPE_FLTOVF_TRAP 0x3 /* floating overflow */
28: #define FPE_FLTDIV_TRAP 0x4 /* floating/decimal divide by zero */
29: #define FPE_FLTUND_TRAP 0x5 /* floating underflow */
30: #define FPE_DECOVF_TRAP 0x6 /* decimal overflow */
31: #define FPE_SUBRNG_TRAP 0x7 /* subscript out of range */
32: #define FPE_FLTOVF_FAULT 0x8 /* floating overflow fault */
33: #define FPE_FLTDIV_FAULT 0x9 /* divide by zero floating fault */
34: #define FPE_FLTUND_FAULT 0xa /* floating underflow fault */
35: #define SIGKILL 9 /* kill (cannot be caught or ignored) */
36: #define SIGBUS 10 /* bus error */
37: #define SIGSEGV 11 /* segmentation violation */
38: #define SIGSYS 12 /* bad argument to system call */
39: #define SIGPIPE 13 /* write on a pipe with no one to read it */
40: #define SIGALRM 14 /* alarm clock */
41: #define SIGTERM 15 /* software termination signal from kill */
42: #define SIGURG 16 /* urgent condition on IO channel */
43: #define SIGSTOP 17 /* sendable stop signal not from tty */
44: #define SIGTSTP 18 /* stop signal from tty */
45: #define SIGCONT 19 /* continue a stopped process */
46: #define SIGCHLD 20 /* to parent on child stop or exit */
47: #define SIGCLD SIGCHLD /* compatibility */
48: #define SIGTTIN 21 /* to readers pgrp upon background tty read */
49: #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
50: #define SIGIO 23 /* input/output possible signal */
51: #define SIGXCPU 24 /* exceeded CPU time limit */
52: #define SIGXFSZ 25 /* exceeded file size limit */
53: #define SIGVTALRM 26 /* virtual time alarm */
54: #define SIGPROF 27 /* profiling time alarm */
55: #define SIGWINCH 28 /* window size changes */
56: #define SIGUSR1 30 /* user defined signal 1 */
57: #define SIGUSR2 31 /* user defined signal 2 */
58:
59: #ifndef KERNEL
60: int (*signal())();
61: #endif
62:
63: /*
64: * Signal vector "template" used in sigvec call.
65: */
66: struct sigvec {
67: int (*sv_handler)(); /* signal handler */
68: int sv_mask; /* signal mask to apply */
69: int sv_flags; /* see signal options below */
70: };
71: #define SV_ONSTACK 0x0001 /* take signal on signal stack */
72: #define SV_INTERRUPT 0x0002 /* do not restart system on signal return */
73: #define sv_onstack sv_flags /* isn't compatibility wonderful! */
74:
75: /*
76: * Structure used in sigstack call.
77: */
78: struct sigstack {
79: char *ss_sp; /* signal stack pointer */
80: int ss_onstack; /* current status */
81: };
82:
83: /*
84: * Information pushed on stack when a signal is delivered.
85: * This is used by the kernel to restore state following
86: * execution of the signal handler. It is also made available
87: * to the handler to allow it to properly restore state if
88: * a non-standard exit is performed.
89: */
90: struct sigcontext {
91: int sc_onstack; /* sigstack state to restore */
92: int sc_mask; /* signal mask to restore */
93: int sc_sp; /* sp to restore */
94: int sc_fp; /* fp to restore */
95: int sc_ap; /* ap to restore */
96: int sc_pc; /* pc to restore */
97: int sc_ps; /* psl to restore */
98: };
99:
100: #define BADSIG (int (*)())-1
101: #define SIG_DFL (int (*)())0
102: #define SIG_IGN (int (*)())1
103:
104: #ifdef KERNEL
105: #define SIG_CATCH (int (*)())2
106: #define SIG_HOLD (int (*)())3
107: #endif
108: #endif
109:
110: /*
111: * Macro for converting signal number to a mask suitable for
112: * sigblock().
113: */
114: #define sigmask(m) (1 << ((m)-1))
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