-#ifndef NSIG
-#define NSIG 32
-
-#define SIGHUP 1 /* hangup */
-#define SIGINT 2 /* interrupt */
-#define SIGQUIT 3 /* quit */
-#define SIGILL 4 /* illegal instruction (not reset when caught) */
-#define SIGTRAP 5 /* trace trap (not reset when caught) */
-#define SIGIOT 6 /* IOT instruction */
-#define SIGEMT 7 /* EMT instruction */
-#define SIGFPE 8 /* floating point exception */
-#define K_INTOVF 1 /* integer overflow */
-#define K_INTDIV 2 /* integer divide by zero */
-#define K_FLTOVF 3 /* floating overflow */
-#define K_FLTDIV 4 /* floating/decimal divide by zero */
-#define K_FLTUND 5 /* floating underflow */
-#define K_DECOVF 6 /* decimal overflow */
-#define K_SUBRNG 7 /* subscript out of range */
-#define SIGKILL 9 /* kill (cannot be caught or ignored) */
-#define SIGBUS 10 /* bus error */
-#define SIGSEGV 11 /* segmentation violation */
-#define SIGSYS 12 /* bad argument to system call */
-#define SIGPIPE 13 /* write on a pipe with no one to read it */
-#define SIGALRM 14 /* alarm clock */
-#define SIGTERM 15 /* software termination signal from kill */
-
-#define SIGSTOP 17 /* sendable stop signal not from tty */
-#define SIGTSTP 18 /* stop signal from tty */
-#define SIGCONT 19 /* continue a stopped process */
-#define SIGCHLD 20 /* to parent on child stop or exit */
-#define SIGTTIN 21 /* to readers pgrp upon background tty read */
-#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
-#define SIGTINT 23 /* to pgrp on every input character if LINTRUP */
-#define SIGXCPU 24 /* exceeded CPU time limit */
-#define SIGXFSZ 25 /* exceeded file size limit */
-
-#ifndef KERNEL
-int (*signal())();
-#endif
-
-#define BADSIG (int (*)())-1
-#define SIG_DFL (int (*)())0
-#define SIG_IGN (int (*)())1
-#ifdef KERNEL
-#define SIG_CATCH (int (*)())2
-#endif
-#define SIG_HOLD (int (*)())3
-
-#define SIGISDEFER(x) (((int)(x) & 1) != 0)
-#define SIGUNDEFER(x) (int (*)())((int)(x) &~ 1)
-#define DEFERSIG(x) (int (*)())((int)(x) | 1)
-
-#define SIGNUMMASK 0377 /* to extract pure signal number */
-#define SIGDOPAUSE 0400 /* do pause after setting action */
-#define SIGDORTI 01000 /* do ret+rti after setting action */
-#endif