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#ifndef __ARM_UNALIGNED_H #define __ARM_UNALIGNED_H #define get_unaligned(ptr) \ ((__typeof__(*(ptr)))__get_unaligned((ptr), sizeof(*(ptr)))) #define put_unaligned(val, ptr) \ __put_unaligned((unsigned long)(val), (ptr), sizeof(*(ptr))) extern void bad_unaligned_access_length (void); extern inline unsigned long __get_unaligned(const void *ptr, size_t size) { unsigned long val; switch (size) { case 1: val = *(const unsigned char *)ptr; break; case 2: val = ((const unsigned char *)ptr)[0] | (((const unsigned char *)ptr)[1] << 8); break; case 4: val = ((const unsigned char *)ptr)[0] | (((const unsigned char *)ptr)[1] << 8) | (((const unsigned char *)ptr)[2]) << 16 | (((const unsigned char *)ptr)[3] << 24); break; default: bad_unaligned_access_length (); } return val; } extern inline void __put_unaligned(unsigned long val, void *ptr, size_t size) { switch (size) { case 1: *(unsigned char *)ptr = val; break; case 2: ((unsigned char *)ptr)[0] = val; ((unsigned char *)ptr)[1] = val >> 8; break; case 4: ((unsigned char *)ptr)[0] = val; ((unsigned char *)ptr)[1] = val >> 8; ((unsigned char *)ptr)[2] = val >> 16; ((unsigned char *)ptr)[3] = val >> 24; break; default: bad_unaligned_access_length (); } } #endif |