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3-4 times better RSA/DSA performance on WIN64A target. Well, on AMD64 CPU,

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EMT64T will hardly exhibit better performance...
This commit is contained in:
Andy Polyakov 2005-08-04 17:35:42 +00:00
parent 19bd66fe74
commit 11de71b04c
2 changed files with 64 additions and 0 deletions
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28
crypto/bn/bn_asm.c
View file

@ -459,6 +459,34 @@ BN_ULONG bn_sub_words(BN_ULONG *r, const BN_ULONG *a, const BN_ULONG *b, int n)
#define sqr_add_c2(a,i,j,c0,c1,c2) \
mul_add_c2((a)[i],(a)[j],c0,c1,c2)
#elif defined(BN_UMULT_LOHI)
#define mul_add_c(a,b,c0,c1,c2) { \
BN_ULONG ta=(a),tb=(b); \
BN_UMULT_LOHI(t1,t2,ta,tb); \
c0 += t1; t2 += (c0<t1)?1:0; \
c1 += t2; c2 += (c1<t2)?1:0; \
}
#define mul_add_c2(a,b,c0,c1,c2) { \
BN_ULONG ta=(a),tb=(b),t0; \
BN_UMULT_LOHI(t0,t1,ta,tb); \
t2 = t1+t1; c2 += (t2<t1)?1:0; \
t1 = t0+t0; t2 += (t1<t0)?1:0; \
c0 += t1; t2 += (c0<t1)?1:0; \
c1 += t2; c2 += (c1<t2)?1:0; \
}
#define sqr_add_c(a,i,c0,c1,c2) { \
BN_ULONG ta=(a)[i]; \
BN_UMULT_LOHI(t1,t2,ta,ta); \
c0 += t1; t2 += (c0<t1)?1:0; \
c1 += t2; c2 += (c1<t2)?1:0; \
}
#define sqr_add_c2(a,i,j,c0,c1,c2) \
mul_add_c2((a)[i],(a)[j],c0,c1,c2)
#elif defined(BN_UMULT_HIGH)
#define mul_add_c(a,b,c0,c1,c2) { \

36
crypto/bn/bn_lcl.h
View file

@ -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); \