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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2016-01-02 17:56:29 +0100 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2016-01-03 00:15:08 +0100 |
| commit | 6e1f5cfe4b50918db677f2646446c63c87f70547 (patch) | |
| tree | fe01a76a87c48d2403225a742fadeacbec7f2825 | |
| parent | 5872be28a243acb3b5aafdf13248e07d30471893 (diff) | |
| download | VeraCrypt-6e1f5cfe4b50918db677f2646446c63c87f70547.tar.gz VeraCrypt-6e1f5cfe4b50918db677f2646446c63c87f70547.zip | |
Windows: use compiler intrinsic for some functions used in cryptographic primitives to ensure maximum performance.
| -rw-r--r-- | src/Crypto/misc.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/Crypto/misc.h b/src/Crypto/misc.h index 7b702ec2..78044491 100644 --- a/src/Crypto/misc.h +++ b/src/Crypto/misc.h @@ -33,8 +33,13 @@ #define CRYPTOPP_FAST_ROTATE(x) 0 #endif +#if defined( _MSC_VER ) && ( _MSC_VER > 800 )
+#pragma intrinsic(memcpy,memset)
+#endif + #if _MSC_VER >= 1300 && !defined(__INTEL_COMPILER) // Intel C++ Compiler 10.0 calls a function instead of using the rotate instruction when using these instructions +#pragma intrinsic(_rotr,_rotl,_rotr64,_rotl64) #define rotr32(x,n) _rotr(x, n) #define rotl32(x,n) _rotl(x, n) @@ -62,8 +67,10 @@ #else #define bswap_32(x) (rotl32((((x) & 0xFF00FF00) >> 8) | (((x) & 0x00FF00FF) << 8), 16U)) #endif +#ifndef TC_NO_COMPILER_INT64 #define bswap_64(x) rotl64(((((((value & LL(0xFF00FF00FF00FF00)) >> 8) | ((value & LL(0x00FF00FF00FF00FF)) << 8)) & LL(0xFFFF0000FFFF0000)) >> 16) | (((((value & LL(0xFF00FF00FF00FF00)) >> 8) | ((value & LL(0x00FF00FF00FF00FF)) << 8)) & LL(0x0000FFFF0000FFFF)) << 16)), 32U) #endif +#endif VC_INLINE uint32 ByteReverseWord32 (uint32 value) { @@ -86,6 +93,8 @@ VC_INLINE uint32 ByteReverseWord32 (uint32 value) #endif } +#ifndef TC_NO_COMPILER_INT64 + VC_INLINE uint64 ByteReverseWord64(uint64 value) { #if defined(__GNUC__) && defined(CRYPTOPP_X86_ASM_AVAILABLE) && defined(__x86_64__) @@ -110,6 +119,7 @@ VC_INLINE void CorrectEndianess(uint64 *out, const uint64 *in, size_t byteCount) out[i] = ByteReverseWord64(in[i]); } +#endif #ifdef CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS #define GetAlignmentOf(T) 1 |