1 /**

     2  * $Id: main.c,v 1.1.1.1 2008-04-28 17:32:52 mbroeker Exp $

     3  * $Source: /development/c/asm/main.c,v $

     4  *

     5  */

     6 

     7 #include <stdio.h>

     8 #include <stdlib.h>

     9 #include <unistd.h>

    10 #include <signal.h>

    11 

    12 #ifndef TIMEOUT

    13 #define TIMEOUT 500

    14 #endif

    15 

    16 int get_sp ();

    17 

    18 void sigendian ()

    19 {

    20     unsigned short word = 0x1234;

    21     unsigned char *p = (unsigned char *)&word;

    22 

    23     signal (SIGUSR1, sigendian);

    24     printf ("%s Endian System\n", (p[0] == 0x34) ? "Little" : "Big");

    25 }

    26 

    27 void sigproc ()

    28 {

    29     signal (SIGINT, sigproc);

    30     printf ("Stack-Pointer is at %08x\n", get_sp ());

    31 }

    32 

    33 void sigquit ()

    34 {

    35     printf ("Hmm... You got it, man!\n");

    36     exit (0);

    37 }

    38 

    39 int main (int argc, char **argv)

    40 {

    41     signal (SIGINT, sigproc);

    42     signal (SIGUSR1, sigendian);

    43     signal (SIGQUIT, sigquit);

    44 

    45     for (;;)

    46         usleep (TIMEOUT);

    47 

    48     return EXIT_FAILURE;

    49 }