Signal-handler support.

scsh/bsd/signals1.c

@@ -0,0 +1,129 @@
+/* Need to turn off synchronous error signals (SIGPIPE, SIGSYS). */
+
+#include "../scsh_aux.h"
+
+/* Make sure our exports match up w/the implementation: */
+#include "signals1.h"
+
+/* This table converts Unix signal numbers to S48/scsh interrupt numbers.
+** If the signal doesn't have an interrupt number, the entry is -1.
+** (Only asynchronous signals have interrupt numbers.)
+**
+** Note that we bake into this table the integer values of the signals --
+** i.e., we assume that SIGHUP=1, SIGALRM=15, etc. So this definition is
+** very system-dependent.
+*/
+const int sig2int[] = {
+  	-1,		/* 0 is not a signal */
+	scshint_hup,	/* SIGHUP */
+	scshint_keyboard,	/* SIGINT */
+	scshint_quit,	/* SIGQUIT */
+	-1,		/* SIGILL */
+	-1,		/* SIGTRAP */
+	-1,		/* SIGABRT & SIGIOT */
+	-1,		/* SIGEMT */
+	-1,		/* SIGFPE */
+	-1,		/* SIGKILL */
+	-1,		/* SIGBUS */
+	-1,		/* SIGSEGV */
+	-1,		/* SIGSYS */
+	-1,		/* SIGPIPE */
+	scshint_alarm,	/* SIGALRM */
+	scshint_term,	/* SIGTERM */
+	scshint_urg,	/* SIGURG */
+	-1,		/* SIGSTOP */
+	scshint_tstp,	/* SIGTSTP */
+	scshint_cont,	/* SIGCONT */
+	scshint_chld,	/* SIGCHLD */
+	-1, /*	scshint_ttyin,	/* SIGTTIN */
+	-1, /*	scshint_ttou,	/* SIGTTOU */
+	scshint_io,	/* SIGIO */
+	scshint_xcpu,	/* SIGXCPU */
+	scshint_xfsz,	/* SIGXFSZ */
+	scshint_vtalrm,	/* SIGVTALRM */
+	scshint_prof,	/* SIGPROF */
+	scshint_winch,	/* SIGWINCH */
+	scshint_info,	/* SIGINFO */
+	scshint_usr1,	/* SIGUSR1 */
+	scshint_usr2	/* SIGUSR2 */
+        };
+
+const int max_sig = 31; /* SIGUSR2 */
+
+/*
+scshint_alarm
+scshint_keyboard
+scshint_memory_shortage
+scshint_chld
+scshint_cont
+scshint_hup
+scshint_quit
+scshint_term
+scshint_tstp
+scshint_usr1
+scshint_usr2
+scshint_info
+scshint_io
+scshint_poll
+scshint_prof
+scshint_pwr
+scshint_urg
+scshint_vtalrm
+scshint_winch
+scshint_xcpu
+scshint_xfsz
+
+SIGALRM
+SIGCHLD
+SIGCONT
+SIGHUP
+SIGINFO
+SIGINT
+SIGIO
+SIGPROF
+SIGQUIT
+SIGTERM
+SIGTSTP
+SIGTTIN
+SIGTTOU
+SIGURG
+SIGUSR1
+SIGUSR2
+SIGVTALRM
+SIGWINCH
+SIGXCPU
+SIGXFSZ
+
+SIGHUP	1
+SIGINT	2
+SIGQUIT	3
+SIGILL	4
+SIGTRAP	5
+SIGABRT	6
+SIGIOT	SIGABRT
+SIGEMT	7
+SIGFPE	8
+SIGKILL	9
+SIGBUS	10
+SIGSEGV	11
+SIGSYS	12
+SIGPIPE	13
+SIGALRM	14
+SIGTERM	15
+SIGURG	16
+SIGSTOP	17
+SIGTSTP	18
+SIGCONT	19
+SIGCHLD	20
+SIGTTIN	21
+SIGTTOU	22
+SIGIO	23
+SIGXCPU	24
+SIGXFSZ	25
+SIGVTALRM 26
+SIGPROF	27
+SIGWINCH 28
+SIGINFO	29
+SIGUSR1 30
+SIGUSR2 31
+*/

scsh/bsd/signals1.h

@@ -0,0 +1,4 @@
+/* Exports from signals1.c */
+
+const int sig2int[];
+const int max_sig;