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Diffstat (limited to 'trunk/src/types.h')
-rw-r--r-- | trunk/src/types.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/trunk/src/types.h b/trunk/src/types.h new file mode 100644 index 0000000..b124ecf --- /dev/null +++ b/trunk/src/types.h @@ -0,0 +1,62 @@ +#ifndef TYPES_H +#define TYPES_H + +#include "config.h" + +typedef unsigned char u8; +typedef unsigned short u16; +typedef signed short i16; +typedef unsigned int u32; + +/* + * You may use the following defines to adjust the type definitions + * depending on the architecture: + * - Define BIGENDIAN on big-endian systems. Untested, as all target + * systems to date are little-endian. + * - Define ALIGNMENT_WORKAROUND if your system doesn't support + * non-aligned memory access. In this case, we use a slower, but safer, + * memory access method. This should be done automatically in config.h + * for architectures which need it. + */ + +#ifdef BIGENDIAN +typedef struct { + u32 h; + u32 l; +} u64; +#else +typedef struct { + u32 l; + u32 h; +} u64; +#endif + +#ifdef ALIGNMENT_WORKAROUND +static inline u64 U64(u32 low, u32 high) +{ + u64 self; + + self.l=low; + self.h=high; + + return self; +} +#endif + +#ifdef ALIGNMENT_WORKAROUND +# ifdef BIGENDIAN +# define WORD(x) (u16)((x)[1]+((x)[0]<<8)) +# define DWORD(x) (u32)((x)[3]+((x)[2]<<8)+((x)[1]<<16)+((x)[0]<<24)) +# define QWORD(x) (U64(DWORD(x+4), DWORD(x))) +# else /* BIGENDIAN */ +# define WORD(x) (u16)((x)[0]+((x)[1]<<8)) +# define DWORD(x) (u32)((x)[0]+((x)[1]<<8)+((x)[2]<<16)+((x)[3]<<24)) +# define QWORD(x) (U64(DWORD(x), DWORD(x+4))) +# endif /* BIGENDIAN */ +#else /* ALIGNMENT_WORKAROUND */ +#define WORD(x) (u16)(*(const u16 *)(x)) +#define DWORD(x) (u32)(*(const u32 *)(x)) +#define QWORD(x) (*(const u64 *)(x)) +#endif /* ALIGNMENT_WORKAROUND */ + +#endif |