linux-sg2042/include/asm-avr32/unaligned.h

26 lines
737 B
C

#ifndef __ASM_AVR32_UNALIGNED_H
#define __ASM_AVR32_UNALIGNED_H
/*
* AVR32 can handle some unaligned accesses, depending on the
* implementation. The AVR32 AP implementation can handle unaligned
* words, but halfwords must be halfword-aligned, and doublewords must
* be word-aligned.
*
* TODO: Make all this CPU-specific and optimize.
*/
#include <linux/string.h>
/* Use memmove here, so gcc does not insert a __builtin_memcpy. */
#define get_unaligned(ptr) \
({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
#define put_unaligned(val, ptr) \
({ __typeof__(*(ptr)) __tmp = (val); \
memmove((ptr), &__tmp, sizeof(*(ptr))); \
(void)0; })
#endif /* __ASM_AVR32_UNALIGNED_H */