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#ifndef __ASM_ARM_UNALIGNED_H
#define __ASM_ARM_UNALIGNED_H
#include <linux/types.h>
#define get_unaligned(ptr) \
((__typeof__(*(ptr)))__get_unaligned_size((ptr), sizeof(*(ptr))))
#define put_unaligned(val, ptr) \
__put_unaligned_size((unsigned long)(val), (ptr), sizeof(*(ptr)))
/*
* We use a similar method to the uaccess.h badness detection.
*
* These are actually never defined anywhere, and therefore
* catch errors at compile/link time. Don't be tempted to
* provide a declaration for them; doing so will mask the
* errors.
*/
extern unsigned long __get_unaligned_bad(void);
extern void __put_unaligned_bad(void);
extern __inline__ unsigned long __get_unaligned_size(const void *ptr, size_t size)
{
const unsigned char *p = (const unsigned char *)ptr;
unsigned long val = 0;
switch (size) {
case 4: val = p[2] << 16 | p[3] << 24;
case 2: val |= p[1] << 8;
case 1: val |= p[0]; break;
default: val = __get_unaligned_bad(); break;
}
return val;
}
extern __inline__ void __put_unaligned_size(unsigned long val, void *ptr, size_t size)
{
switch (size) {
case 4: ((unsigned char *)ptr)[3] = val >> 24;
((unsigned char *)ptr)[2] = val >> 16;
case 2: ((unsigned char *)ptr)[1] = val >> 8;
case 1: ((unsigned char *)ptr)[0] = val; break;
default: __put_unaligned_bad(); break;
}
}
#endif
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