+
−/**
+
− * asm/main.c
+
− * Copyright (C) 2008 Markus Broeker
+
− */
+
−
+
−#include <stdio.h>
+
−#include <stdlib.h>
+
−#include <unistd.h>
+
−#include <signal.h>
+
−
+
−#ifndef TIMEOUT
+
−#define TIMEOUT 500
+
−#endif
+
−
+
−int get_sp ();
+
−
+
−void sigendian ()
+
−{
+
−    unsigned short word = 0x1234;
+
−    unsigned char *p = (unsigned char *)&word;
+
−
+
−    signal (SIGUSR1, sigendian);
+
−    printf ("%s Endian System\n", (p[0] == 0x34) ? "Little" : "Big");
+
−}
+
−
+
−void sigproc ()
+
−{
+
−    signal (SIGINT, sigproc);
+
−    printf ("Stack-Pointer is at %08x\n", get_sp ());
+
−}
+
−
+
−void sigquit ()
+
−{
+
−    printf ("Hmm... You got it, man!\n");
+
−    exit (0);
+
−}
+
−
+
−int main (int argc, char **argv)
+
−{
+
−    signal (SIGINT, sigproc);
+
−    signal (SIGUSR1, sigendian);
+
−    signal (SIGQUIT, sigquit);
+
−
+
−    for (;;)
+
−        usleep (TIMEOUT);
+
−
+
−    return EXIT_FAILURE;
+
−}