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| author | David Kalnischkies <david@kalnischkies.de> | 2015-03-30 14:37:43 +0200 |
|---|---|---|
| committer | David Kalnischkies <david@kalnischkies.de> | 2015-04-19 01:13:09 +0200 |
| commit | 76cbc9abb2d09ee5b248dfaa24948ba016fb6dee (patch) | |
| tree | a0c88fac33ab4a7b10fff9c32a37f3590d4e9164 /apt-pkg/contrib | |
| parent | 9b3449e5babd9c20812cf796067d3c6090b6a228 (diff) | |
if we can, use gccs __builtin_swap methods
Git-Dch: Ignore
Diffstat (limited to 'apt-pkg/contrib')
| -rw-r--r-- | apt-pkg/contrib/sha2_internal.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/apt-pkg/contrib/sha2_internal.cc b/apt-pkg/contrib/sha2_internal.cc index 131ff5beb..f70b7b17d 100644 --- a/apt-pkg/contrib/sha2_internal.cc +++ b/apt-pkg/contrib/sha2_internal.cc @@ -129,6 +129,14 @@ typedef u_int64_t sha2_word64; /* Exactly 8 bytes */ /*** ENDIAN REVERSAL MACROS *******************************************/ #if BYTE_ORDER == LITTLE_ENDIAN +#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) +#define REVERSE32(w,x) { \ + (x) = __builtin_bswap32(w); \ +} +#define REVERSE64(w,x) { \ + (x) = __builtin_bswap64(w); \ +} +#else #define REVERSE32(w,x) { \ sha2_word32 tmp = (w); \ tmp = (tmp >> 16) | (tmp << 16); \ @@ -142,6 +150,7 @@ typedef u_int64_t sha2_word64; /* Exactly 8 bytes */ (x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \ ((tmp & 0x0000ffff0000ffffULL) << 16); \ } +#endif #endif /* BYTE_ORDER == LITTLE_ENDIAN */ /* |