x86_64 performance patch.

11 files changed, 684 insertions, 80 deletions

diff --git a/crypto/bn/Makefile.ssl b/crypto/bn/Makefile.ssl
index 9516ba5ab8..b709c84adc 100644
--- a/crypto/bn/Makefile.ssl
+++ b/crypto/bn/Makefile.ssl
@@ -138,6 +138,8 @@ asm/ia64-cpp.o:	asm/ia64.S
 	$(CC) $(ASFLAGS) -c -o asm/ia64-cpp.o /tmp/ia64.$$$$.s;	\
 	rm -f /tmp/ia64.$$$$.s
 
+asm/x86_64-gcc.o: asm/x86_64-gcc.c
+
 files:
 	$(PERL) $(TOP)/util/files.pl Makefile.ssl >> $(TOP)/MINFO
 
diff --git a/crypto/bn/asm/x86_64-gcc.c b/crypto/bn/asm/x86_64-gcc.c
new file mode 100644
index 0000000000..b97b394661
--- /dev/null
+++ b/crypto/bn/asm/x86_64-gcc.c
@@ -0,0 +1,575 @@
+/*
+ * x86_64 BIGNUM accelerator version 0.1, December 2002.
+ *
+ * Implemented by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
+ * project.
+ *
+ * Rights for redistribution and usage in source and binary forms are
+ * granted according to the OpenSSL license. Warranty of any kind is
+ * disclaimed.
+ *
+ * Q. Version 0.1? It doesn't sound like Andy, he used to assign real
+ *    versions, like 1.0...
+ * A. Well, that's because this code is basically a quick-n-dirty
+ *    proof-of-concept hack. As you can see it's implemented with
+ *    inline assembler, which means that you're bound to GCC and that
+ *    there must be a room for fine-tuning.
+ *
+ * Q. Why inline assembler?
+ * A. x86_64 features own ABI I'm not familiar with. Which is why
+ *    I decided to let the compiler take care of subroutine
+ *    prologue/epilogue as well as register allocation.
+ *
+ * Q. How much faster does it get?
+ * A. Unfortunately people sitting on x86_64 hardware are prohibited
+ *    to disclose the performance numbers, so they (SuSE labs to be
+ *    specific) wouldn't tell me. However! Very similar coding technique
+ *    (reaching out for 128-bit result from 64x64-bit multiplication)
+ *    results in >3 times performance improvement on MIPS and I see no
+ *    reason why gain on x86_64 would be so much different:-)
+ */
+
+#define BN_ULONG unsigned long
+
+/*
+ * "m"(a), "+m"(r)	is the way to favor DirectPath µ-code;
+ * "g"(0)		let the compiler to decide where does it
+ *			want to keep the value of zero;
+ */
+#define mul_add(r,a,word,carry) do {	\
+	register BN_ULONG high,low;	\
+	asm ("mulq %3"			\
+		: "=a"(low),"=d"(high)	\
+		: "a"(word),"m"(a)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(carry),"+d"(high)\
+		: "a"(low),"g"(0)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+m"(r),"+d"(high)	\
+		: "r"(carry),"g"(0)	\
+		: "cc");		\
+	carry=high;			\
+	} while (0)
+
+#define mul(r,a,word,carry) do {	\
+	register BN_ULONG high,low;	\
+	asm ("mulq %3"			\
+		: "=a"(low),"=d"(high)	\
+		: "a"(word),"g"(a)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(carry),"+d"(high)\
+		: "a"(low),"g"(0)	\
+		: "cc");		\
+	(r)=carry, carry=high;		\
+	} while (0)
+
+#define sqr(r0,r1,a)			\
+	asm ("mulq %2"			\
+		: "=a"(r0),"=d"(r1)	\
+		: "a"(a)		\
+		: "cc");
+
+BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
+	{
+	BN_ULONG c1=0;
+
+	if (num <= 0) return(c1);
+
+	while (num&~3)
+		{
+		mul_add(rp[0],ap[0],w,c1);
+		mul_add(rp[1],ap[1],w,c1);
+		mul_add(rp[2],ap[2],w,c1);
+		mul_add(rp[3],ap[3],w,c1);
+		ap+=4; rp+=4; num-=4;
+		}
+	if (num)
+		{
+		mul_add(rp[0],ap[0],w,c1); if (--num==0) return c1;
+		mul_add(rp[1],ap[1],w,c1); if (--num==0) return c1;
+		mul_add(rp[2],ap[2],w,c1); return c1;
+		}
+	
+	return(c1);
+	} 
+
+BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
+	{
+	BN_ULONG c1=0;
+
+	if (num <= 0) return(c1);
+
+	while (num&~3)
+		{
+		mul(rp[0],ap[0],w,c1);
+		mul(rp[1],ap[1],w,c1);
+		mul(rp[2],ap[2],w,c1);
+		mul(rp[3],ap[3],w,c1);
+		ap+=4; rp+=4; num-=4;
+		}
+	if (num)
+		{
+		mul(rp[0],ap[0],w,c1); if (--num == 0) return c1;
+		mul(rp[1],ap[1],w,c1); if (--num == 0) return c1;
+		mul(rp[2],ap[2],w,c1);
+		}
+	return(c1);
+	} 
+
+void bn_sqr_words(BN_ULONG *r, BN_ULONG *a, int n)
+        {
+	if (n <= 0) return;
+
+	while (n&~3)
+		{
+		sqr(r[0],r[1],a[0]);
+		sqr(r[2],r[3],a[1]);
+		sqr(r[4],r[5],a[2]);
+		sqr(r[6],r[7],a[3]);
+		a+=4; r+=8; n-=4;
+		}
+	if (n)
+		{
+		sqr(r[0],r[1],a[0]); if (--n == 0) return;
+		sqr(r[2],r[3],a[1]); if (--n == 0) return;
+		sqr(r[4],r[5],a[2]);
+		}
+	}
+
+BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d)
+{	BN_ULONG ret,waste;
+
+	asm ("divq	%3"
+		: "=a"(ret),"=d"(waste)
+		: "a"(l),"d"(h),"g"(d)
+		: "cc");
+
+	return ret;
+}
+
+BN_ULONG bn_add_words (BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int n)
+{ BN_ULONG ret,i;
+
+	if (n <= 0) return 0;
+
+	asm (
+	"	subq	%2,%2		\n"
+	".align 16			\n"
+	"1:	movq	(%4,%2,8),%0	\n"
+	"	adcq	(%5,%2,8),%0	\n"
+	"	movq	%0,(%3,%2,8)	\n"
+	"	leaq	1(%2),%2	\n"
+	"	loop	1b		\n"
+	"	sbbq	%0,%0		\n"
+		: "+a"(ret),"+c"(n),"+r"(i)
+		: "r"(rp),"r"(ap),"r"(bp)
+		: "cc"
+	);
+
+  return ret&1;
+}
+
+#ifndef SIMICS
+BN_ULONG bn_sub_words (BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int n)
+{ BN_ULONG ret,i;
+
+	if (n <= 0) return 0;
+
+	asm (
+	"	subq	%2,%2		\n"
+	".align 16			\n"
+	"1:	movq	(%4,%2,8),%0	\n"
+	"	sbbq	(%5,%2,8),%0	\n"
+	"	movq	%0,(%3,%2,8)	\n"
+	"	leaq	1(%2),%2	\n"
+	"	loop	1b		\n"
+	"	sbbq	%0,%0		\n"
+		: "+a"(ret),"+c"(n),"+r"(i)
+		: "r"(rp),"r"(ap),"r"(bp)
+		: "cc"
+	);
+
+  return ret&1;
+}
+#else
+/* Simics 1.4<7 has buggy sbbq:-( */
+#define BN_MASK2 0xffffffffffffffffL
+BN_ULONG bn_sub_words(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n)
+        {
+	BN_ULONG t1,t2;
+	int c=0;
+
+	if (n <= 0) return((BN_ULONG)0);
+
+	for (;;)
+		{
+		t1=a[0]; t2=b[0];
+		r[0]=(t1-t2-c)&BN_MASK2;
+		if (t1 != t2) c=(t1 < t2);
+		if (--n <= 0) break;
+
+		t1=a[1]; t2=b[1];
+		r[1]=(t1-t2-c)&BN_MASK2;
+		if (t1 != t2) c=(t1 < t2);
+		if (--n <= 0) break;
+
+		t1=a[2]; t2=b[2];
+		r[2]=(t1-t2-c)&BN_MASK2;
+		if (t1 != t2) c=(t1 < t2);
+		if (--n <= 0) break;
+
+		t1=a[3]; t2=b[3];
+		r[3]=(t1-t2-c)&BN_MASK2;
+		if (t1 != t2) c=(t1 < t2);
+		if (--n <= 0) break;
+
+		a+=4;
+		b+=4;
+		r+=4;
+		}
+	return(c);
+	}
+#endif
+
+/* mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0) */
+/* mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0) */
+/* sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0) */
+/* sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0) */
+
+#if 0
+/* original macros are kept for reference purposes */
+#define mul_add_c(a,b,c0,c1,c2) {	\
+	BN_ULONG ta=(a),tb=(b);		\
+	t1 = ta * tb;			\
+	t2 = BN_UMULT_HIGH(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;	\
+	t1 = BN_UMULT_HIGH(ta,tb);	\
+	t0 = 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;	\
+	}
+#else
+#define mul_add_c(a,b,c0,c1,c2)	do {	\
+	asm ("mulq %3"			\
+		: "=a"(t1),"=d"(t2)	\
+		: "a"(a),"m"(b)		\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c0),"+d"(t2)	\
+		: "a"(t1),"g"(0)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c1),"+r"(c2)	\
+		: "d"(t2),"g"(0)	\
+		: "cc");		\
+	} while (0)
+
+#define sqr_add_c(a,i,c0,c1,c2)	do {	\
+	asm ("mulq %2"			\
+		: "=a"(t1),"=d"(t2)	\
+		: "a"(a[i])		\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c0),"+d"(t2)	\
+		: "a"(t1),"g"(0)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c1),"+r"(c2)	\
+		: "d"(t2),"g"(0)	\
+		: "cc");		\
+	} while (0)
+
+#define mul_add_c2(a,b,c0,c1,c2) do {	\
+	asm ("mulq %3"			\
+		: "=a"(t1),"=d"(t2)	\
+		: "a"(a),"m"(b)		\
+		: "cc");		\
+	asm ("addq %0,%0; adcq %2,%1"	\
+		: "+d"(t2),"+r"(c2)	\
+		: "g"(0)		\
+		: "cc");		\
+	asm ("addq %0,%0; adcq %2,%1"	\
+		: "+a"(t1),"+d"(t2)	\
+		: "g"(0)		\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c0),"+d"(t2)	\
+		: "a"(t1),"g"(0)	\
+		: "cc");		\
+	asm ("addq %2,%0; adcq %3,%1"	\
+		: "+r"(c1),"+r"(c2)	\
+		: "d"(t2),"g"(0)	\
+		: "cc");		\
+	} while (0)
+#endif
+
+#define sqr_add_c2(a,i,j,c0,c1,c2)	\
+	mul_add_c2((a)[i],(a)[j],c0,c1,c2)
+
+void bn_mul_comba8(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b)
+	{
+	BN_ULONG bl,bh;
+	BN_ULONG t1,t2;
+	BN_ULONG c1,c2,c3;
+
+	c1=0;
+	c2=0;
+	c3=0;
+	mul_add_c(a[0],b[0],c1,c2,c3);
+	r[0]=c1;
+	c1=0;
+	mul_add_c(a[0],b[1],c2,c3,c1);
+	mul_add_c(a[1],b[0],c2,c3,c1);
+	r[1]=c2;
+	c2=0;
+	mul_add_c(a[2],b[0],c3,c1,c2);
+	mul_add_c(a[1],b[1],c3,c1,c2);
+	mul_add_c(a[0],b[2],c3,c1,c2);
+	r[2]=c3;
+	c3=0;
+	mul_add_c(a[0],b[3],c1,c2,c3);
+	mul_add_c(a[1],b[2],c1,c2,c3);
+	mul_add_c(a[2],b[1],c1,c2,c3);
+	mul_add_c(a[3],b[0],c1,c2,c3);
+	r[3]=c1;
+	c1=0;
+	mul_add_c(a[4],b[0],c2,c3,c1);
+	mul_add_c(a[3],b[1],c2,c3,c1);
+	mul_add_c(a[2],b[2],c2,c3,c1);
+	mul_add_c(a[1],b[3],c2,c3,c1);
+	mul_add_c(a[0],b[4],c2,c3,c1);
+	r[4]=c2;
+	c2=0;
+	mul_add_c(a[0],b[5],c3,c1,c2);
+	mul_add_c(a[1],b[4],c3,c1,c2);
+	mul_add_c(a[2],b[3],c3,c1,c2);
+	mul_add_c(a[3],b[2],c3,c1,c2);
+	mul_add_c(a[4],b[1],c3,c1,c2);
+	mul_add_c(a[5],b[0],c3,c1,c2);
+	r[5]=c3;
+	c3=0;
+	mul_add_c(a[6],b[0],c1,c2,c3);
+	mul_add_c(a[5],b[1],c1,c2,c3);
+	mul_add_c(a[4],b[2],c1,c2,c3);
+	mul_add_c(a[3],b[3],c1,c2,c3);
+	mul_add_c(a[2],b[4],c1,c2,c3);
+	mul_add_c(a[1],b[5],c1,c2,c3);
+	mul_add_c(a[0],b[6],c1,c2,c3);
+	r[6]=c1;
+	c1=0;
+	mul_add_c(a[0],b[7],c2,c3,c1);
+	mul_add_c(a[1],b[6],c2,c3,c1);
+	mul_add_c(a[2],b[5],c2,c3,c1);
+	mul_add_c(a[3],b[4],c2,c3,c1);
+	mul_add_c(a[4],b[3],c2,c3,c1);
+	mul_add_c(a[5],b[2],c2,c3,c1);
+	mul_add_c(a[6],b[1],c2,c3,c1);
+	mul_add_c(a[7],b[0],c2,c3,c1);
+	r[7]=c2;
+	c2=0;
+	mul_add_c(a[7],b[1],c3,c1,c2);
+	mul_add_c(a[6],b[2],c3,c1,c2);
+	mul_add_c(a[5],b[3],c3,c1,c2);
+	mul_add_c(a[4],b[4],c3,c1,c2);
+	mul_add_c(a[3],b[5],c3,c1,c2);
+	mul_add_c(a[2],b[6],c3,c1,c2);
+	mul_add_c(a[1],b[7],c3,c1,c2);
+	r[8]=c3;
+	c3=0;
+	mul_add_c(a[2],b[7],c1,c2,c3);
+	mul_add_c(a[3],b[6],c1,c2,c3);
+	mul_add_c(a[4],b[5],c1,c2,c3);
+	mul_add_c(a[5],b[4],c1,c2,c3);
+	mul_add_c(a[6],b[3],c1,c2,c3);
+	mul_add_c(a[7],b[2],c1,c2,c3);
+	r[9]=c1;
+	c1=0;
+	mul_add_c(a[7],b[3],c2,c3,c1);
+	mul_add_c(a[6],b[4],c2,c3,c1);
+	mul_add_c(a[5],b[5],c2,c3,c1);
+	mul_add_c(a[4],b[6],c2,c3,c1);
+	mul_add_c(a[3],b[7],c2,c3,c1);
+	r[10]=c2;
+	c2=0;
+	mul_add_c(a[4],b[7],c3,c1,c2);
+	mul_add_c(a[5],b[6],c3,c1,c2);
+	mul_add_c(a[6],b[5],c3,c1,c2);
+	mul_add_c(a[7],b[4],c3,c1,c2);
+	r[11]=c3;
+	c3=0;
+	mul_add_c(a[7],b[5],c1,c2,c3);
+	mul_add_c(a[6],b[6],c1,c2,c3);
+	mul_add_c(a[5],b[7],c1,c2,c3);
+	r[12]=c1;
+	c1=0;
+	mul_add_c(a[6],b[7],c2,c3,c1);
+	mul_add_c(a[7],b[6],c2,c3,c1);
+	r[13]=c2;
+	c2=0;
+	mul_add_c(a[7],b[7],c3,c1,c2);
+	r[14]=c3;
+	r[15]=c1;
+	}
+
+void bn_mul_comba4(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b)
+	{
+	BN_ULONG bl,bh;
+	BN_ULONG t1,t2;
+	BN_ULONG c1,c2,c3;
+
+	c1=0;
+	c2=0;
+	c3=0;
+	mul_add_c(a[0],b[0],c1,c2,c3);
+	r[0]=c1;
+	c1=0;
+	mul_add_c(a[0],b[1],c2,c3,c1);
+	mul_add_c(a[1],b[0],c2,c3,c1);
+	r[1]=c2;
+	c2=0;
+	mul_add_c(a[2],b[0],c3,c1,c2);
+	mul_add_c(a[1],b[1],c3,c1,c2);
+	mul_add_c(a[0],b[2],c3,c1,c2);
+	r[2]=c3;
+	c3=0;
+	mul_add_c(a[0],b[3],c1,c2,c3);
+	mul_add_c(a[1],b[2],c1,c2,c3);
+	mul_add_c(a[2],b[1],c1,c2,c3);
+	mul_add_c(a[3],b[0],c1,c2,c3);
+	r[3]=c1;
+	c1=0;
+	mul_add_c(a[3],b[1],c2,c3,c1);
+	mul_add_c(a[2],b[2],c2,c3,c1);
+	mul_add_c(a[1],b[3],c2,c3,c1);
+	r[4]=c2;
+	c2=0;
+	mul_add_c(a[2],b[3],c3,c1,c2);
+	mul_add_c(a[3],b[2],c3,c1,c2);
+	r[5]=c3;
+	c3=0;
+	mul_add_c(a[3],b[3],c1,c2,c3);
+	r[6]=c1;
+	r[7]=c2;
+	}
+
+void bn_sqr_comba8(BN_ULONG *r, BN_ULONG *a)
+	{
+	BN_ULONG bl,bh;
+	BN_ULONG t1,t2;
+	BN_ULONG c1,c2,c3;
+
+	c1=0;
+	c2=0;
+	c3=0;
+	sqr_add_c(a,0,c1,c2,c3);
+	r[0]=c1;
+	c1=0;
+	sqr_add_c2(a,1,0,c2,c3,c1);
+	r[1]=c2;
+	c2=0;
+	sqr_add_c(a,1,c3,c1,c2);
+	sqr_add_c2(a,2,0,c3,c1,c2);
+	r[2]=c3;
+	c3=0;
+	sqr_add_c2(a,3,0,c1,c2,c3);
+	sqr_add_c2(a,2,1,c1,c2,c3);
+	r[3]=c1;
+	c1=0;
+	sqr_add_c(a,2,c2,c3,c1);
+	sqr_add_c2(a,3,1,c2,c3,c1);
+	sqr_add_c2(a,4,0,c2,c3,c1);
+	r[4]=c2;
+	c2=0;
+	sqr_add_c2(a,5,0,c3,c1,c2);
+	sqr_add_c2(a,4,1,c3,c1,c2);
+	sqr_add_c2(a,3,2,c3,c1,c2);
+	r[5]=c3;
+	c3=0;
+	sqr_add_c(a,3,c1,c2,c3);
+	sqr_add_c2(a,4,2,c1,c2,c3);
+	sqr_add_c2(a,5,1,c1,c2,c3);
+	sqr_add_c2(a,6,0,c1,c2,c3);
+	r[6]=c1;
+	c1=0;
+	sqr_add_c2(a,7,0,c2,c3,c1);
+	sqr_add_c2(a,6,1,c2,c3,c1);
+	sqr_add_c2(a,5,2,c2,c3,c1);
+	sqr_add_c2(a,4,3,c2,c3,c1);
+	r[7]=c2;
+	c2=0;
+	sqr_add_c(a,4,c3,c1,c2);
+	sqr_add_c2(a,5,3,c3,c1,c2);
+	sqr_add_c2(a,6,2,c3,c1,c2);
+	sqr_add_c2(a,7,1,c3,c1,c2);
+	r[8]=c3;
+	c3=0;
+	sqr_add_c2(a,7,2,c1,c2,c3);
+	sqr_add_c2(a,6,3,c1,c2,c3);
+	sqr_add_c2(a,5,4,c1,c2,c3);
+	r[9]=c1;
+	c1=0;
+	sqr_add_c(a,5,c2,c3,c1);
+	sqr_add_c2(a,6,4,c2,c3,c1);
+	sqr_add_c2(a,7,3,c2,c3,c1);
+	r[10]=c2;
+	c2=0;
+	sqr_add_c2(a,7,4,c3,c1,c2);
+	sqr_add_c2(a,6,5,c3,c1,c2);
+	r[11]=c3;
+	c3=0;
+	sqr_add_c(a,6,c1,c2,c3);
+	sqr_add_c2(a,7,5,c1,c2,c3);
+	r[12]=c1;
+	c1=0;
+	sqr_add_c2(a,7,6,c2,c3,c1);
+	r[13]=c2;
+	c2=0;
+	sqr_add_c(a,7,c3,c1,c2);
+	r[14]=c3;
+	r[15]=c1;
+	}
+
+void bn_sqr_comba4(BN_ULONG *r, BN_ULONG *a)
+	{
+	BN_ULONG bl,bh;
+	BN_ULONG t1,t2;
+	BN_ULONG c1,c2,c3;
+
+	c1=0;
+	c2=0;
+	c3=0;
+	sqr_add_c(a,0,c1,c2,c3);
+	r[0]=c1;
+	c1=0;
+	sqr_add_c2(a,1,0,c2,c3,c1);
+	r[1]=c2;
+	c2=0;
+	sqr_add_c(a,1,c3,c1,c2);
+	sqr_add_c2(a,2,0,c3,c1,c2);
+	r[2]=c3;
+	c3=0;
+	sqr_add_c2(a,3,0,c1,c2,c3);
+	sqr_add_c2(a,2,1,c1,c2,c3);
+	r[3]=c1;
+	c1=0;
+	sqr_add_c(a,2,c2,c3,c1);
+	sqr_add_c2(a,3,1,c2,c3,c1);
+	r[4]=c2;
+	c2=0;
+	sqr_add_c2(a,3,2,c3,c1,c2);
+	r[5]=c3;
+	c3=0;
+	sqr_add_c(a,3,c1,c2,c3);
+	r[6]=c1;
+	r[7]=c2;
+	}
diff --git a/crypto/bn/bn_div.c b/crypto/bn/bn_div.c
index f9a095e3b3..ea099e0c2b 100644
--- a/crypto/bn/bn_div.c
+++ b/crypto/bn/bn_div.c
@@ -150,6 +150,20 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
 	    q;					\
 	})
 #  define REMAINDER_IS_ALREADY_CALCULATED
+#  elif defined(__x86_64) && defined(SIXTY_FOUR_BIT_LONG)
+   /*
+    * Same story here, but it's 128-bit by 64-bit division. Wow!
+    *					<appro@fy.chalmers.se>
+    */
+#  define bn_div_words(n0,n1,d0)		\
+	({  asm volatile (			\
+		"divq	%4"			\
+		: "=a"(q), "=d"(rem)		\
+		: "a"(n1), "d"(n0), "g"(d0)	\
+		: "cc");			\
+	    q;					\
+	})
+#  define REMAINDER_IS_ALREADY_CALCULATED
 #  endif /* __<cpu> */
 # endif /* __GNUC__ */
 #endif /* OPENSSL_NO_ASM */
@@ -296,7 +310,9 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
 			rem=(n1-q*d0)&BN_MASK2;
 #endif
 
-#ifdef BN_UMULT_HIGH
+#if defined(BN_UMULT_LOHI)
+			BN_UMULT_LOHI(t2l,t2h,d1,q);
+#elif defined(BN_UMULT_HIGH)
 			t2l = d1 * q;
 			t2h = BN_UMULT_HIGH(d1,q);
 #else
diff --git a/crypto/bn/bn_lcl.h b/crypto/bn/bn_lcl.h
index 1db940f4c5..d10ec56e7e 100644
--- a/crypto/bn/bn_lcl.h
+++ b/crypto/bn/bn_lcl.h
@@ -230,6 +230,21 @@ struct bignum_ctx
 	     : "r"(a), "r"(b));		\
 	ret;			})
 #  endif	/* compiler */
+# elif defined(__x86_64) && defined(SIXTY_FOUR_BIT_LONG)
+#  if defined(__GNUC__)
+#   define BN_UMULT_HIGH(a,b)	({	\
+	register BN_ULONG ret,discard;	\
+	asm ("mulq	%3"		\
+	     : "=a"(discard),"=d"(ret)	\
+	     : "a"(a), "g"(b)		\
+	     : "cc");			\
+	ret;			})
+#   define BN_UMULT_LOHI(low,high,a,b)	\
+	asm ("mulq	%3"		\
+		: "=a"(low),"=d"(high)	\
+		: "a"(a),"g"(b)		\
+		: "cc");
+#  endif
 # endif		/* cpu */
 #endif		/* OPENSSL_NO_ASM */
 
@@ -347,7 +362,7 @@ struct bignum_ctx
 
 #define LBITS(a)	((a)&BN_MASK2l)
 #define HBITS(a)	(((a)>>BN_BITS4)&BN_MASK2l)
-#define	L2HBITS(a)	((BN_ULONG)((a)&BN_MASK2l)<<BN_BITS4)
+#define	L2HBITS(a)	(((a)<<BN_BITS4)&BN_MASK2)
 
 #define LLBITS(a)	((a)&BN_MASKl)
 #define LHBITS(a)	(((a)>>BN_BITS2)&BN_MASKl)
diff --git a/crypto/des/des_locl.h b/crypto/des/des_locl.h
index 9e033f7c2e..5eb7cff0ca 100644
--- a/crypto/des/des_locl.h
+++ b/crypto/des/des_locl.h
@@ -159,6 +159,16 @@
 
 #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
 #define	ROTATE(a,n)	(_lrotr(a,n))
+#elif defined(__GNUC__) && __GNUC__>=2 && !defined(NO_ASM) && !defined(NO_INLINE_ASM)
+# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
+#  define ROTATE(a,n)	({ register unsigned int ret;	\
+				asm ("rorl %1,%0"	\
+					: "=r"(ret)	\
+					: "I"(n),"0"(a)	\
+					: "cc");	\
+			   ret;				\
+			})
+# endif
 #else
 #define	ROTATE(a,n)	(((a)>>(n))+((a)<<(32-(n))))
 #endif
diff --git a/crypto/md32_common.h b/crypto/md32_common.h
index 275b93618b..573850b122 100644
--- a/crypto/md32_common.h
+++ b/crypto/md32_common.h
@@ -198,7 +198,7 @@
    *
    * 					<appro@fy.chalmers.se>
    */
-#  if defined(__i386) || defined(__i386__)
+#  if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
 #   define ROTATE(a,n)	({ register unsigned int ret;	\
 				asm (			\
 				"roll %1,%0"		\
@@ -224,7 +224,7 @@
  */
 # if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
   /* some GNU C inline assembler templates by <appro@fy.chalmers.se> */
-#  if (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)
+#  if (defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)) && !defined(I386_ONLY)
 #   define BE_FETCH32(a)	({ register unsigned int l=(a);\
 				asm (			\
 				"bswapl %0"		\
@@ -610,3 +610,28 @@ int HASH_FINAL (unsigned char *md, HASH_CTX *c)
 	 */
 	return 1;
 	}
+
+#ifndef MD32_REG_T
+#define MD32_REG_T long
+/*
+ * This comment was originaly written for MD5, which is why it
+ * discusses A-D. But it basically applies to all 32-bit digests,
+ * which is why it was moved to common header file.
+ *
+ * In case you wonder why A-D are declared as long and not
+ * as MD5_LONG. Doing so results in slight performance
+ * boost on LP64 architectures. The catch is we don't
+ * really care if 32 MSBs of a 64-bit register get polluted
+ * with eventual overflows as we *save* only 32 LSBs in
+ * *either* case. Now declaring 'em long excuses the compiler
+ * from keeping 32 MSBs zeroed resulting in 13% performance
+ * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
+ * Well, to be honest it should say that this *prevents* 
+ * performance degradation.
+ *				<appro@fy.chalmers.se>
+ * Apparently there're LP64 compilers that generate better
+ * code if A-D are declared int. Most notably GCC-x86_64
+ * generates better code.
+ *				<appro@fy.chalmers.se>
+ */
+#endif
diff --git a/crypto/md4/md4_dgst.c b/crypto/md4/md4_dgst.c
index 6446f5f5e7..7afb7185b6 100644
--- a/crypto/md4/md4_dgst.c
+++ b/crypto/md4/md4_dgst.c
@@ -86,21 +86,7 @@ int MD4_Init(MD4_CTX *c)
 void md4_block_host_order (MD4_CTX *c, const void *data, int num)
 	{
 	const MD4_LONG *X=data;
-	register unsigned long A,B,C,D;
-	/*
-	 * In case you wonder why A-D are declared as long and not
-	 * as MD4_LONG. Doing so results in slight performance
-	 * boost on LP64 architectures. The catch is we don't
-	 * really care if 32 MSBs of a 64-bit register get polluted
-	 * with eventual overflows as we *save* only 32 LSBs in
-	 * *either* case. Now declaring 'em long excuses the compiler
-	 * from keeping 32 MSBs zeroed resulting in 13% performance
-	 * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
-	 * Well, to be honest it should say that this *prevents* 
-	 * performance degradation.
-	 *
-	 *				<appro@fy.chalmers.se>
-	 */
+	register unsigned MD32_REG_T A,B,C,D;
 
 	A=c->A;
 	B=c->B;
@@ -176,25 +162,11 @@ void md4_block_host_order (MD4_CTX *c, const void *data, int num)
 void md4_block_data_order (MD4_CTX *c, const void *data_, int num)
 	{
 	const unsigned char *data=data_;
-	register unsigned long A,B,C,D,l;
-	/*
-	 * In case you wonder why A-D are declared as long and not
-	 * as MD4_LONG. Doing so results in slight performance
-	 * boost on LP64 architectures. The catch is we don't
-	 * really care if 32 MSBs of a 64-bit register get polluted
-	 * with eventual overflows as we *save* only 32 LSBs in
-	 * *either* case. Now declaring 'em long excuses the compiler
-	 * from keeping 32 MSBs zeroed resulting in 13% performance
-	 * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
-	 * Well, to be honest it should say that this *prevents* 
-	 * performance degradation.
-	 *
-	 *				<appro@fy.chalmers.se>
-	 */
+	register unsigned MD32_REG_T A,B,C,D,l;
 #ifndef MD32_XARRAY
 	/* See comment in crypto/sha/sha_locl.h for details. */
-	unsigned long	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
-			XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
+	unsigned MD32_REG_T	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
+				XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 # define X(i)	XX##i
 #else
 	MD4_LONG XX[MD4_LBLOCK];
diff --git a/crypto/md5/md5_dgst.c b/crypto/md5/md5_dgst.c
index c38a3f021e..9c7abc3697 100644
--- a/crypto/md5/md5_dgst.c
+++ b/crypto/md5/md5_dgst.c
@@ -86,21 +86,7 @@ int MD5_Init(MD5_CTX *c)
 void md5_block_host_order (MD5_CTX *c, const void *data, int num)
 	{
 	const MD5_LONG *X=data;
-	register unsigned long A,B,C,D;
-	/*
-	 * In case you wonder why A-D are declared as long and not
-	 * as MD5_LONG. Doing so results in slight performance
-	 * boost on LP64 architectures. The catch is we don't
-	 * really care if 32 MSBs of a 64-bit register get polluted
-	 * with eventual overflows as we *save* only 32 LSBs in
-	 * *either* case. Now declaring 'em long excuses the compiler
-	 * from keeping 32 MSBs zeroed resulting in 13% performance
-	 * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
-	 * Well, to be honest it should say that this *prevents* 
-	 * performance degradation.
-	 *
-	 *				<appro@fy.chalmers.se>
-	 */
+	register unsigned MD32_REG_T A,B,C,D;
 
 	A=c->A;
 	B=c->B;
@@ -193,25 +179,11 @@ void md5_block_host_order (MD5_CTX *c, const void *data, int num)
 void md5_block_data_order (MD5_CTX *c, const void *data_, int num)
 	{
 	const unsigned char *data=data_;
-	register unsigned long A,B,C,D,l;
-	/*
-	 * In case you wonder why A-D are declared as long and not
-	 * as MD5_LONG. Doing so results in slight performance
-	 * boost on LP64 architectures. The catch is we don't
-	 * really care if 32 MSBs of a 64-bit register get polluted
-	 * with eventual overflows as we *save* only 32 LSBs in
-	 * *either* case. Now declaring 'em long excuses the compiler
-	 * from keeping 32 MSBs zeroed resulting in 13% performance
-	 * improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
-	 * Well, to be honest it should say that this *prevents* 
-	 * performance degradation.
-	 *
-	 *				<appro@fy.chalmers.se>
-	 */
+	register unsigned MD32_REG_T A,B,C,D,l;
 #ifndef MD32_XARRAY
 	/* See comment in crypto/sha/sha_locl.h for details. */
-	unsigned long	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
-			XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
+	unsigned MD32_REG_T	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
+				XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 # define X(i)	XX##i
 #else
 	MD5_LONG XX[MD5_LBLOCK];
diff --git a/crypto/rc5/rc5_locl.h b/crypto/rc5/rc5_locl.h
index d3871c6555..c700dfb1a5 100644
--- a/crypto/rc5/rc5_locl.h
+++ b/crypto/rc5/rc5_locl.h
@@ -149,6 +149,23 @@
 #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
 #define ROTATE_l32(a,n)     _lrotl(a,n)
 #define ROTATE_r32(a,n)     _lrotr(a,n)
+#elif defined(__GNUC__) && __GNUC__>=2 && !defined(NO_ASM) && !defined(NO_INLINE_ASM)
+# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
+#  define ROTATE_l32(a,n)	({ register unsigned int ret;	\
+					asm ("roll %%cl,%0"	\
+						: "=r"(ret)	\
+						: "c"(n),"0"(a)	\
+						: "cc");	\
+					ret;			\
+				})
+#  define ROTATE_r32(a,n)	({ register unsigned int ret;	\
+					asm ("rorl %%cl,%0"	\
+						: "=r"(ret)	\
+						: "c"(n),"0"(a)	\
+						: "cc");	\
+					ret;			\
+				})
+# endif
 #else
 #define ROTATE_l32(a,n)     (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f))))
 #define ROTATE_r32(a,n)     (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f)))
diff --git a/crypto/ripemd/rmd_dgst.c b/crypto/ripemd/rmd_dgst.c
index a3170f7c8a..f351f00eea 100644
--- a/crypto/ripemd/rmd_dgst.c
+++ b/crypto/ripemd/rmd_dgst.c
@@ -90,8 +90,8 @@ int RIPEMD160_Init(RIPEMD160_CTX *c)
 void ripemd160_block_host_order (RIPEMD160_CTX *ctx, const void *p, int num)
 	{
 	const RIPEMD160_LONG *XX=p;
-	register unsigned long A,B,C,D,E;
-	register unsigned long a,b,c,d,e;
+	register unsigned MD32_REG_T A,B,C,D,E;
+	register unsigned MD32_REG_T a,b,c,d,e;
 
 	for (;num--;XX+=HASH_LBLOCK)
 		{
@@ -290,12 +290,12 @@ void ripemd160_block_host_order (RIPEMD160_CTX *ctx, const void *p, int num)
 void ripemd160_block_data_order (RIPEMD160_CTX *ctx, const void *p, int num)
 	{
 	const unsigned char *data=p;
-	register unsigned long A,B,C,D,E;
-	unsigned long a,b,c,d,e,l;
+	register unsigned MD32_REG_T A,B,C,D,E;
+	unsigned MD32_REG_T a,b,c,d,e,l;
 #ifndef MD32_XARRAY
 	/* See comment in crypto/sha/sha_locl.h for details. */
-	unsigned long	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
-			XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
+	unsigned MD32_REG_T	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
+				XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 # define X(i)	XX##i
 #else
 	RIPEMD160_LONG	XX[16];
diff --git a/crypto/sha/sha_locl.h b/crypto/sha/sha_locl.h
index 471dfb9f8f..2dd63a62a6 100644
--- a/crypto/sha/sha_locl.h
+++ b/crypto/sha/sha_locl.h
@@ -224,10 +224,10 @@ int HASH_INIT (SHA_CTX *c)
 void HASH_BLOCK_HOST_ORDER (SHA_CTX *c, const void *d, int num)
 	{
 	const SHA_LONG *W=d;
-	register unsigned long A,B,C,D,E,T;
+	register unsigned MD32_REG_T A,B,C,D,E,T;
 #ifndef MD32_XARRAY
-	unsigned long	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
-			XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
+	unsigned MD32_REG_T	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
+				XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 #else
 	SHA_LONG	XX[16];
 #endif
@@ -349,10 +349,10 @@ void HASH_BLOCK_HOST_ORDER (SHA_CTX *c, const void *d, int num)
 void HASH_BLOCK_DATA_ORDER (SHA_CTX *c, const void *p, int num)
 	{
 	const unsigned char *data=p;
-	register unsigned long A,B,C,D,E,T,l;
+	register unsigned MD32_REG_T A,B,C,D,E,T,l;
 #ifndef MD32_XARRAY
-	unsigned long	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
-			XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
+	unsigned MD32_REG_T	XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
+				XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 #else
 	SHA_LONG	XX[16];
 #endif