diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libsha1.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/libsha1.c b/lib/libsha1.c index 5d16f6ab..87c7c528 100644 --- a/lib/libsha1.c +++ b/lib/libsha1.c @@ -49,11 +49,20 @@ extern "C" #define bswap_32(x) ((rotr32((x), 24) & 0x00ff00ff) | (rotr32((x), 8) & 0xff00ff00)) -#if (PLATFORM_BYTE_ORDER == IS_LITTLE_ENDIAN) -#define bsw_32(p,n) \ - { int _i = (n); while(_i--) ((uint32_t*)p)[_i] = bswap_32(((uint32_t*)p)[_i]); } +/* The macros __BYTE_ORDER__ and __ORDER_*_ENDIAN__ are GNU C + * extensions. They are also supported by clang as of v3.2 */ + +#ifdef __BYTE_ORDER__ +# if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) +# define bsw_32(p,n) \ + { int _i = (n); while(_i--) ((uint32_t*)p)[_i] = bswap_32(((uint32_t*)p)[_i]); } +# elif (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) +# define bsw_32(p,n) +# else +# error "unknown byte order" +# endif #else -#define bsw_32(p,n) +# error "macro __BYTE_ORDER__ is not defined" #endif #define SHA1_MASK (SHA1_BLOCK_SIZE - 1) |