diff options
| -rw-r--r-- | lib/unaligned.h | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/lib/unaligned.h b/lib/unaligned.h index 29fcee99..53e32e5d 100644 --- a/lib/unaligned.h +++ b/lib/unaligned.h @@ -1,5 +1,5 @@ /* - * Unaligned Data Accesses + * Unaligned Data Accesses -- Generic Version * * (c) 1998 Martin Mares <mj@ucw.cz> * @@ -9,4 +9,34 @@ #ifndef _BIRD_UNALIGNED_H_ #define _BIRD_UNALIGNED_H_ +#if CPU_NEEDS_ALIGN_WORD != 1 || CPU_NEEDS_ALIGN_LONG != 1 +#include <string.h> +#endif + +#if CPU_NEEDS_ALIGN_WORD == 1 +#define unaligned_u16(p) (*((u16 *)(p))) +#else +static inline u16 +unaligned_u16(void *p) +{ + u16 x; + + memcpy(&x, p, sizeof(x)); + return x; +} +#endif + +#if CPU_NEEDS_ALIGN_LONG == 1 +#define unaligned_u32(p) (*((u32 *)(p))) +#else +static inline u32 +unaligned_u32(void *p) +{ + u32 x; + + memcpy(&x, p, sizeof(x)); + return x; +} +#endif + #endif |