#include <linux/kernel.h>
#include <linux/module.h>

#include <asm/uaccess.h>

unsigned long long source1 = 0x0102030405060708;
unsigned long long source2 = 0x8070605040302010;

int test_8(unsigned char *v, unsigned char *p)
{ return __get_user(*v, p); }
int test_8_constp(unsigned char *v, const unsigned char *p)
{ return __get_user(*v, p); }
int test_8_volatilep(unsigned char *v, volatile unsigned char *p)
{ return __get_user(*v, p); }
int test_16(unsigned short *v, unsigned short *p)
{ return __get_user(*v, p); }
int test_16_constp(unsigned short *v, const unsigned short *p)
{ return __get_user(*v, p); }
int test_32(unsigned int *v, unsigned int *p)
{ return __get_user(*v, p); }
int test_32_constp(unsigned int *v, const unsigned int *p)
{ return __get_user(*v, p); }
int test_64(unsigned long long *v, unsigned long long *p)
{ return __get_user(*v, p); }
int test_64_constp(unsigned long long *v, const unsigned long long *p)
{ return __get_user(*v, p); }
int test_ptr(unsigned int **v, unsigned int **p)
{ return __get_user(*v, p); }
int test_const(unsigned int *v, const unsigned int *p)
{ return __get_user(*v, p); }
int test_64_narrow(unsigned long *v, unsigned long long *p)
{ return __get_user(*v, p); }
int test_32_wide(unsigned long long *v, unsigned long *p)
{ return __get_user(*v, p); }

// This one should warn
#if 0
int test_wrong(char **v, const char **p)
{ return __get_user(*v, p); }
#endif

int my_init(void)
{
	unsigned char c;
	unsigned short s;
	unsigned int l;
	unsigned long long ll;

	c = 0;
	test_8(&c, (unsigned char *)&source1);
	printk("c=%0x\n", c);

	test_8(&c, (unsigned char *)&source2);
	printk("c=%0x\n", c);

	s = 0;
	test_16(&s, (unsigned short *)&source1);
	printk("s=%0x\n", s);

	s = 0;
	test_16(&s, (unsigned short *)&source2);
	printk("s=%0x\n", s);

	l = 0;
	test_32(&l, (unsigned int *)&source1);
	printk("l=%0x\n", l);

	l = 0;
	test_32(&l, (unsigned int *)&source2);
	printk("l=%0x\n", l);

	ll = 0;
	test_64(&ll, (unsigned long long *)&source1);
	printk("l=%0Lx\n", ll);

	ll = 0;
	test_64(&ll, (unsigned long long *)&source2);
	printk("l=%0Lx\n", ll);

	return -EINVAL;
}

void my_exit(void)
{
	return;
}

module_init(my_init);
module_exit(my_exit);