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qemu/tests/tcg/cris/libc/check_mmap3.c

34 lines
675 B
C

/*
#notarget: cris*-*-elf
*/
#define _GNU_SOURCE
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/mman.h>
int main (int argc, char *argv[])
{
volatile unsigned char *a;
/* Check that we can map a non-multiple of a page and still get a full page. */
a = mmap (NULL, 0x4c, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (a == NULL || a == (unsigned char *) -1)
abort ();
a[0] = 0xbe;
a[8191] = 0xef;
memset ((char *) a + 1, 0, 8190);
if (a[0] != 0xbe || a[8191] != 0xef)
abort ();
printf ("pass\n");
exit (0);
}