From: jsing <jsing@openbsd.org>
Date: Sat, 11 Feb 2023 12:15:02 +0000 (+0000)
Subject: Bye bye x86_64-gcc.c.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=bad8bb64d38b2aa756669901e2ff6e6f4b3cebbe;p=openbsd

Bye bye x86_64-gcc.c.

This is no longer used, since we're now using s2n-bignum functions instead.
---

diff --git a/lib/libcrypto/bn/asm/x86_64-gcc.c b/lib/libcrypto/bn/asm/x86_64-gcc.c
deleted file mode 100644
index c6d6239bc29..00000000000
--- a/lib/libcrypto/bn/asm/x86_64-gcc.c
+++ /dev/null
@@ -1,559 +0,0 @@
-/* $OpenBSD: x86_64-gcc.c,v 1.8 2023/01/20 17:26:03 jsing Exp $ */
-#include "../bn_local.h"
-/*
- * 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 might be enough room for further improvement.
- *
- * Q. Why inline assembler?
- * A. x86_64 features own ABI which I'm not familiar with. This is
- *    why I decided to let the compiler take care of subroutine
- *    prologue/epilogue as well as register allocation. For reference.
- *    Win64 implements different ABI for AMD64, different from Linux.
- *
- * Q. How much faster does it get?
- * A. 'apps/openssl speed rsa dsa' output with no-asm:
- *
- *	                  sign    verify    sign/s verify/s
- *	rsa  512 bits   0.0006s   0.0001s   1683.8  18456.2
- *	rsa 1024 bits   0.0028s   0.0002s    356.0   6407.0
- *	rsa 2048 bits   0.0172s   0.0005s     58.0   1957.8
- *	rsa 4096 bits   0.1155s   0.0018s      8.7    555.6
- *	                  sign    verify    sign/s verify/s
- *	dsa  512 bits   0.0005s   0.0006s   2100.8   1768.3
- *	dsa 1024 bits   0.0014s   0.0018s    692.3    559.2
- *	dsa 2048 bits   0.0049s   0.0061s    204.7    165.0
- *
- *    'apps/openssl speed rsa dsa' output with this module:
- *
- *	                  sign    verify    sign/s verify/s
- *	rsa  512 bits   0.0004s   0.0000s   2767.1  33297.9
- *	rsa 1024 bits   0.0012s   0.0001s    867.4  14674.7
- *	rsa 2048 bits   0.0061s   0.0002s    164.0   5270.0
- *	rsa 4096 bits   0.0384s   0.0006s     26.1   1650.8
- *	                  sign    verify    sign/s verify/s
- *	dsa  512 bits   0.0002s   0.0003s   4442.2   3786.3
- *	dsa 1024 bits   0.0005s   0.0007s   1835.1   1497.4
- *	dsa 2048 bits   0.0016s   0.0020s    620.4    504.6
- *
- *    For the reference. IA-32 assembler implementation performs
- *    very much like 64-bit code compiled with no-asm on the same
- *    machine.
- */
-
-#define BN_ULONG unsigned long
-
-#undef mul
-#undef mul_add
-#undef sqr
-
-/*
- * "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 {	\
-	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 {	\
-	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, const 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, const 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, const 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	%4"
-		: "=a"(ret),"=d"(waste)
-		: "a"(l),"d"(h),"g"(d)
-		: "cc");
-
-	return ret;
-}
-
-BN_ULONG bn_add_words (BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,int n)
-{ BN_ULONG ret=0,i=0;
-
-	if (n <= 0) return 0;
-
-	asm (
-	"	subq	%2,%2		\n"
-	".p2align 4			\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;
-}
-
-BN_ULONG bn_sub_words (BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,int n)
-{ BN_ULONG ret=0,i=0;
-
-	if (n <= 0) return 0;
-
-	asm (
-	"	subq	%2,%2		\n"
-	".p2align 4			\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;
-}
-
-/* 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) */
-
-#undef mul_add_c
-#undef mul_add_c2
-#undef sqr_add_c
-#undef sqr_add_c2
-
-/*
- * Keep in mind that carrying into high part of multiplication result
- * can not overflow, because it cannot be all-ones.
- */
-#if 0
-/* original macros are kept for reference purposes */
-#define mul_add_c(a,b,c0,c1,c2)		do {	\
-	BN_ULONG ta = (a), tb = (b);		\
-	BN_ULONG lo, hi;			\
-	BN_UMULT_LOHI(lo,hi,ta,tb);		\
-	c0 += lo; hi += (c0<lo)?1:0;		\
-	c1 += hi; c2 += (c1<hi)?1:0;		\
-	} while(0)
-
-#define mul_add_c2(a,b,c0,c1,c2)	do {	\
-	BN_ULONG ta = (a), tb = (b);		\
-	BN_ULONG lo, hi, tt;			\
-	BN_UMULT_LOHI(lo,hi,ta,tb);		\
-	c0 += lo; tt = hi+((c0<lo)?1:0);	\
-	c1 += tt; c2 += (c1<tt)?1:0;		\
-	c0 += lo; hi += (c0<lo)?1:0;		\
-	c1 += hi; c2 += (c1<hi)?1:0;		\
-	} while(0)
-
-#define sqr_add_c(a,i,c0,c1,c2)		do {	\
-	BN_ULONG ta = (a)[i];			\
-	BN_ULONG lo, hi;			\
-	BN_UMULT_LOHI(lo,hi,ta,ta);		\
-	c0 += lo; hi += (c0<lo)?1:0;		\
-	c1 += hi; c2 += (c1<hi)?1:0;		\
-	} while(0)
-#else
-#define mul_add_c(a,b,c0,c1,c2)	do {	\
-	BN_ULONG t1,t2;			\
-	asm ("mulq %3"			\
-		: "=a"(t1),"=d"(t2)	\
-		: "a"(a),"m"(b)		\
-		: "cc");		\
-	asm ("addq %3,%0; adcq %4,%1; adcq %5,%2"	\
-		: "+r"(c0),"+r"(c1),"+r"(c2)		\
-		: "r"(t1),"r"(t2),"g"(0)		\
-		: "cc");				\
-	} while (0)
-
-#define sqr_add_c(a,i,c0,c1,c2)	do {	\
-	BN_ULONG t1,t2;			\
-	asm ("mulq %2"			\
-		: "=a"(t1),"=d"(t2)	\
-		: "a"(a[i])		\
-		: "cc");		\
-	asm ("addq %3,%0; adcq %4,%1; adcq %5,%2"	\
-		: "+r"(c0),"+r"(c1),"+r"(c2)		\
-		: "r"(t1),"r"(t2),"g"(0)		\
-		: "cc");				\
-	} while (0)
-
-#define mul_add_c2(a,b,c0,c1,c2) do {	\
-	BN_ULONG t1,t2;			\
-	asm ("mulq %3"			\
-		: "=a"(t1),"=d"(t2)	\
-		: "a"(a),"m"(b)		\
-		: "cc");		\
-	asm ("addq %3,%0; adcq %4,%1; adcq %5,%2"	\
-		: "+r"(c0),"+r"(c1),"+r"(c2)		\
-		: "r"(t1),"r"(t2),"g"(0)		\
-		: "cc");				\
-	asm ("addq %3,%0; adcq %4,%1; adcq %5,%2"	\
-		: "+r"(c0),"+r"(c1),"+r"(c2)		\
-		: "r"(t1),"r"(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 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 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, const BN_ULONG *a)
-	{
-	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, const BN_ULONG *a)
-	{
-	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;
-	}