diff options
Diffstat (limited to 'src/utils')
| -rw-r--r-- | src/utils/bswap.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/utils/bswap.h b/src/utils/bswap.h index 3a2b32f3c..cee9a1e84 100644 --- a/src/utils/bswap.h +++ b/src/utils/bswap.h @@ -21,7 +21,9 @@ inline u16bit reverse_bytes(u16bit input) inline u32bit reverse_bytes(u32bit input) { -#if defined(BOTAN_TARGET_ARCH_IS_IA32) || defined(BOTAN_TARGET_ARCH_IS_AMD64) +#if BOTAN_COMPILER_HAS_GCC_INLINE_ASM && + (defined(BOTAN_TARGET_ARCH_IS_IA32) || defined(BOTAN_TARGET_ARCH_IS_AMD64)) + asm("bswapl %0" : "=r" (input) : "0" (input)); return input; #else @@ -32,7 +34,7 @@ inline u32bit reverse_bytes(u32bit input) inline u64bit reverse_bytes(u64bit input) { -#if defined(BOTAN_TARGET_ARCH_IS_AMD64) +#if BOTAN_COMPILER_HAS_GCC_INLINE_ASM && defined(BOTAN_TARGET_ARCH_IS_AMD64) asm("bswapq %0" : "=r" (input) : "0" (input)); return input; #else |