tests/cris/check_mmap3.c

   1 /*
   2 #notarget: cris*-*-elf
   3 */
   4
   5 #define _GNU_SOURCE
   6 #include <string.h>
   7 #include <stdlib.h>
   8 #include <stdio.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11 #include <unistd.h>
  12 #include <sys/mman.h>
  13
  14 int main (int argc, char *argv[])
  15 {
  16   volatile unsigned char *a;
  17
  18   /* Check that we can map a non-multiple of a page and still get a full page.  */
  19   a = mmap (NULL, 0x4c, PROT_READ | PROT_WRITE | PROT_EXEC,
  20             MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  21   if (a == NULL || a == (unsigned char *) -1)
  22     abort ();
  23
  24   a[0] = 0xbe;
  25   a[8191] = 0xef;
  26   memset ((char *) a + 1, 0, 8190);
  27
  28   if (a[0] != 0xbe || a[8191] != 0xef)
  29     abort ();
  30
  31   printf ("pass\n");
  32   exit (0);
  33 }