diff options
Diffstat (limited to 'include/cramfs')
| -rw-r--r-- | include/cramfs/cramfs_fs.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/cramfs/cramfs_fs.h b/include/cramfs/cramfs_fs.h index e0c14f0..9f1b1d5 100644 --- a/include/cramfs/cramfs_fs.h +++ b/include/cramfs/cramfs_fs.h @@ -84,6 +84,7 @@ struct cramfs_super { | CRAMFS_FLAG_WRONG_SIGNATURE \ | CRAMFS_FLAG_SHIFTED_ROOT_OFFSET ) +#if __BYTE_ORDER == __LITTLE_ENDIAN #define CRAMFS_16(x) (x) #define CRAMFS_24(x) (x) #define CRAMFS_32(x) (x) @@ -91,6 +92,27 @@ struct cramfs_super { #define CRAMFS_GET_OFFSET(x) ((x)->offset) #define CRAMFS_SET_OFFSET(x,y) ((x)->offset = (y)) #define CRAMFS_SET_NAMELEN(x,y) ((x)->namelen = (y)) +#elif __BYTE_ORDER == __BIG_ENDIAN +#ifdef __KERNEL__ +#define CRAMFS_16(x) swab16(x) +#define CRAMFS_24(x) ((swab32(x)) >> 8) +#define CRAMFS_32(x) swab32(x) +#else /* not __KERNEL__ */ +#define CRAMFS_16(x) bswap_16(x) +#define CRAMFS_24(x) ((bswap_32(x)) >> 8) +#define CRAMFS_32(x) bswap_32(x) +#endif /* not __KERNEL__ */ +#define CRAMFS_GET_NAMELEN(x) (((u8*)(x))[8] & 0x3f) +#define CRAMFS_GET_OFFSET(x) ((CRAMFS_24(((u32*)(x))[2] & 0xffffff) << 2) |\ + ((((u32*)(x))[2] & 0xc0000000) >> 30)) +#define CRAMFS_SET_NAMELEN(x,y) (((u8*)(x))[8] = (((0x3f & (y))) | \ + (0xc0 & ((u8*)(x))[8]))) +#define CRAMFS_SET_OFFSET(x,y) (((u32*)(x))[2] = (((y) & 3) << 30) | \ + CRAMFS_24((((y) & 0x03ffffff) >> 2)) | \ + (((u32)(((u8*)(x))[8] & 0x3f)) << 24)) +#else +#error "__BYTE_ORDER must be __LITTLE_ENDIAN or __BIG_ENDIAN" +#endif /* Uncompression interfaces to the underlying zlib */ int cramfs_uncompress_block(void *dst, void *src, int srclen); |