ack/lang/m2/libm2/init.c

/*
  (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
  See the copyright notice in the ACK home directory, in the file "Copyright".
*/

/*
  Module:	initialization and some global vars
  Author:	Ceriel J.H. Jacobs
  Version:	$Id$
*/

#include <signal.h>
#include <em_abs.h>
#include <m2_traps.h>
#include "libm2.h"

static const char signals_list[] = {
#ifdef SIGHUP
	SIGHUP,
#endif
#ifdef SIGINT
	SIGINT,
#endif
#ifdef SIGQUIT
	SIGQUIT,
#endif
#ifdef SIGTRAP
	SIGTRAP,
#endif
#ifdef SIGIOT
	SIGIOT,
#endif
#ifdef SIGEMT
	SIGEMT,
#endif
#ifdef SIGFPE
	SIGFPE,
#endif
#ifdef SIGBUS
	SIGBUS,
#endif
#ifdef SIGSEGV
	SIGSEGV,
#endif
#ifdef SIGPIPE
	SIGPIPE,
#endif
#ifdef SIGALRM
	SIGALRM,
#endif
#ifdef SIGTERM
	SIGTERM,
#endif
	-1
};

/* map unix signals onto EM traps */
void init(void)
{
	const char* p = signals_list;
	do
	{
		int i = *p++;
		if (i == -1)
			break;
		sigtrp(M2_UNIXSIG, i);
	} while (1);

	sigtrp(EILLINS, SIGILL);
#ifdef SIGSYS
	sigtrp(EBADMON, SIGSYS);
#endif
}
#if defined(__em22) || defined(__em24) || defined(__em44)
void killbss(void)
{
}
#else

static int blablabla; /*	We cannot use end, because then also
                    bss allocated for the systemcall lib
                    would be overwritten. Lets hope that
                    this helps ...
                */

void killbss(void)
{
	extern char* bkillbss;
	register char* p = (char*)&bkillbss;

	while (p < (char*)&blablabla)
		*p++ = 0x66;
}
#endif

void (*handler)(int) = catch;
char** argv = 0;
int argc = 0;
char* MainLB = 0;