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author | Andy Polyakov <appro@openssl.org> | 2005-08-04 17:35:42 +0000 |
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committer | Andy Polyakov <appro@openssl.org> | 2005-08-04 17:35:42 +0000 |
commit | 11de71b04c750e6be6f5e8ac875655a2a67efaf7 (patch) | |
tree | 96d7829f07e74d95d7a7af4c933ad21b3cc1d2a0 /crypto/bn/bn_lcl.h | |
parent | 19bd66fe747e9768a684e26f24bae4445353ee6c (diff) | |
download | openssl-11de71b04c750e6be6f5e8ac875655a2a67efaf7.tar.gz |
3-4 times better RSA/DSA performance on WIN64A target. Well, on AMD64 CPU,
EMT64T will hardly exhibit better performance...
Diffstat (limited to 'crypto/bn/bn_lcl.h')
-rw-r--r-- | crypto/bn/bn_lcl.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/crypto/bn/bn_lcl.h b/crypto/bn/bn_lcl.h index 1c680fc3ce..ad4ca7ff30 100644 --- a/crypto/bn/bn_lcl.h +++ b/crypto/bn/bn_lcl.h @@ -270,6 +270,15 @@ extern "C" { : "a"(a),"g"(b) \ : "cc"); # endif +# elif (defined(_M_AMD64) || defined(_M_X64)) && defined(SIXTY_FOUR_BIT) +# if defined(_MSC_VER) && _MSC_VER>=1400 + unsigned __int64 __umulh (unsigned __int64 a,unsigned __int64 b); + unsigned __int64 _umul128 (unsigned __int64 a,unsigned __int64 b, + unsigned __int64 *h); +# pragma intrinsic(__umulh,_umul128) +# define BN_UMULT_HIGH(a,b) __umulh((a),(b)) +# define BN_UMULT_LOHI(low,high,a,b) ((low)=_umul128((a),(b),&(high))) +# endif # endif /* cpu */ #endif /* OPENSSL_NO_ASM */ @@ -313,6 +322,33 @@ extern "C" { (r1)=Hw(t); \ } +#elif defined(BN_UMULT_LOHI) +#define mul_add(r,a,w,c) { \ + BN_ULONG high,low,ret,tmp=(a); \ + ret = (r); \ + BN_UMULT_LOHI(low,high,w,tmp); \ + ret += (c); \ + (c) = (ret<(c))?1:0; \ + (c) += high; \ + ret += low; \ + (c) += (ret<low)?1:0; \ + (r) = ret; \ + } + +#define mul(r,a,w,c) { \ + BN_ULONG high,low,ret,ta=(a); \ + BN_UMULT_LOHI(low,high,w,ta); \ + ret = low + (c); \ + (c) = high; \ + (c) += (ret<low)?1:0; \ + (r) = ret; \ + } + +#define sqr(r0,r1,a) { \ + BN_ULONG tmp=(a); \ + BN_UMULT_LOHI(r0,r1,tmp,tmp); \ + } + #elif defined(BN_UMULT_HIGH) #define mul_add(r,a,w,c) { \ BN_ULONG high,low,ret,tmp=(a); \ |