Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/bn/asm/ppc-mont.pl

Index: openssl/crypto/bn/asm/ppc-mont.pl
diff --git a/openssl/crypto/bn/asm/ppc-mont.pl b/openssl/crypto/bn/asm/ppc-mont.pl
deleted file mode 100644
index f9b6992ccc82bd28333ab8ae87e5d120ee07c791..0000000000000000000000000000000000000000
--- a/openssl/crypto/bn/asm/ppc-mont.pl
+++ /dev/null
@@ -1,334 +0,0 @@
-#!/usr/bin/env perl
-
-# ====================================================================
-# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
-# project. The module is, however, dual licensed under OpenSSL and
-# CRYPTOGAMS licenses depending on where you obtain it. For further
-# details see http://www.openssl.org/~appro/cryptogams/.
-# ====================================================================
-
-# April 2006
-
-# "Teaser" Montgomery multiplication module for PowerPC. It's possible
-# to gain a bit more by modulo-scheduling outer loop, then dedicated
-# squaring procedure should give further 20% and code can be adapted
-# for 32-bit application running on 64-bit CPU. As for the latter.
-# It won't be able to achieve "native" 64-bit performance, because in
-# 32-bit application context every addc instruction will have to be
-# expanded as addc, twice right shift by 32 and finally adde, etc.
-# So far RSA *sign* performance improvement over pre-bn_mul_mont asm
-# for 64-bit application running on PPC970/G5 is:
-#
-# 512-bit	+65%	
-# 1024-bit	+35%
-# 2048-bit	+18%
-# 4096-bit	+4%
-
-$flavour = shift;
-
-if ($flavour =~ /32/) {
-	$BITS=	32;
-	$BNSZ=	$BITS/8;
-	$SIZE_T=4;
-	$RZONE=	224;
-
-	$LD=	"lwz";		# load
-	$LDU=	"lwzu";		# load and update
-	$LDX=	"lwzx";		# load indexed
-	$ST=	"stw";		# store
-	$STU=	"stwu";		# store and update
-	$STX=	"stwx";		# store indexed
-	$STUX=	"stwux";	# store indexed and update
-	$UMULL=	"mullw";	# unsigned multiply low
-	$UMULH=	"mulhwu";	# unsigned multiply high
-	$UCMP=	"cmplw";	# unsigned compare
-	$SHRI=	"srwi";		# unsigned shift right by immediate	
-	$PUSH=	$ST;
-	$POP=	$LD;
-} elsif ($flavour =~ /64/) {
-	$BITS=	64;
-	$BNSZ=	$BITS/8;
-	$SIZE_T=8;
-	$RZONE=	288;
-
-	# same as above, but 64-bit mnemonics...
-	$LD=	"ld";		# load
-	$LDU=	"ldu";		# load and update
-	$LDX=	"ldx";		# load indexed
-	$ST=	"std";		# store
-	$STU=	"stdu";		# store and update
-	$STX=	"stdx";		# store indexed
-	$STUX=	"stdux";	# store indexed and update
-	$UMULL=	"mulld";	# unsigned multiply low
-	$UMULH=	"mulhdu";	# unsigned multiply high
-	$UCMP=	"cmpld";	# unsigned compare
-	$SHRI=	"srdi";		# unsigned shift right by immediate	
-	$PUSH=	$ST;
-	$POP=	$LD;
-} else { die "nonsense $flavour"; }
-
-$FRAME=8*$SIZE_T+$RZONE;
-$LOCALS=8*$SIZE_T;
-
-$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
-( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
-( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
-die "can't locate ppc-xlate.pl";
-
-open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
-
-$sp="r1";
-$toc="r2";
-$rp="r3";	$ovf="r3";
-$ap="r4";
-$bp="r5";
-$np="r6";
-$n0="r7";
-$num="r8";
-$rp="r9";	# $rp is reassigned
-$aj="r10";
-$nj="r11";
-$tj="r12";
-# non-volatile registers
-$i="r20";
-$j="r21";
-$tp="r22";
-$m0="r23";
-$m1="r24";
-$lo0="r25";
-$hi0="r26";
-$lo1="r27";
-$hi1="r28";
-$alo="r29";
-$ahi="r30";
-$nlo="r31";
-#
-$nhi="r0";
-
-$code=<<___;
-.machine "any"
-.text
-
-.globl	.bn_mul_mont_int
-.align	4
-.bn_mul_mont_int:
-	cmpwi	$num,4
-	mr	$rp,r3		; $rp is reassigned
-	li	r3,0
-	bltlr
-___
-$code.=<<___ if ($BNSZ==4);
-	cmpwi	$num,32		; longer key performance is not better
-	bgelr
-___
-$code.=<<___;
-	slwi	$num,$num,`log($BNSZ)/log(2)`
-	li	$tj,-4096
-	addi	$ovf,$num,$FRAME
-	subf	$ovf,$ovf,$sp	; $sp-$ovf
-	and	$ovf,$ovf,$tj	; minimize TLB usage
-	subf	$ovf,$sp,$ovf	; $ovf-$sp
-	mr	$tj,$sp
-	srwi	$num,$num,`log($BNSZ)/log(2)`
-	$STUX	$sp,$sp,$ovf
-
-	$PUSH	r20,`-12*$SIZE_T`($tj)
-	$PUSH	r21,`-11*$SIZE_T`($tj)
-	$PUSH	r22,`-10*$SIZE_T`($tj)
-	$PUSH	r23,`-9*$SIZE_T`($tj)
-	$PUSH	r24,`-8*$SIZE_T`($tj)
-	$PUSH	r25,`-7*$SIZE_T`($tj)
-	$PUSH	r26,`-6*$SIZE_T`($tj)
-	$PUSH	r27,`-5*$SIZE_T`($tj)
-	$PUSH	r28,`-4*$SIZE_T`($tj)
-	$PUSH	r29,`-3*$SIZE_T`($tj)
-	$PUSH	r30,`-2*$SIZE_T`($tj)
-	$PUSH	r31,`-1*$SIZE_T`($tj)
-
-	$LD	$n0,0($n0)	; pull n0[0] value
-	addi	$num,$num,-2	; adjust $num for counter register
-
-	$LD	$m0,0($bp)	; m0=bp[0]
-	$LD	$aj,0($ap)	; ap[0]
-	addi	$tp,$sp,$LOCALS
-	$UMULL	$lo0,$aj,$m0	; ap[0]*bp[0]
-	$UMULH	$hi0,$aj,$m0
-
-	$LD	$aj,$BNSZ($ap)	; ap[1]
-	$LD	$nj,0($np)	; np[0]
-
-	$UMULL	$m1,$lo0,$n0	; "tp[0]"*n0
-
-	$UMULL	$alo,$aj,$m0	; ap[1]*bp[0]
-	$UMULH	$ahi,$aj,$m0
-
-	$UMULL	$lo1,$nj,$m1	; np[0]*m1
-	$UMULH	$hi1,$nj,$m1
-	$LD	$nj,$BNSZ($np)	; np[1]
-	addc	$lo1,$lo1,$lo0
-	addze	$hi1,$hi1
-
-	$UMULL	$nlo,$nj,$m1	; np[1]*m1
-	$UMULH	$nhi,$nj,$m1
-
-	mtctr	$num
-	li	$j,`2*$BNSZ`
-.align	4
-L1st:
-	$LDX	$aj,$ap,$j	; ap[j]
-	addc	$lo0,$alo,$hi0
-	$LDX	$nj,$np,$j	; np[j]
-	addze	$hi0,$ahi
-	$UMULL	$alo,$aj,$m0	; ap[j]*bp[0]
-	addc	$lo1,$nlo,$hi1
-	$UMULH	$ahi,$aj,$m0
-	addze	$hi1,$nhi
-	$UMULL	$nlo,$nj,$m1	; np[j]*m1
-	addc	$lo1,$lo1,$lo0	; np[j]*m1+ap[j]*bp[0]
-	$UMULH	$nhi,$nj,$m1
-	addze	$hi1,$hi1
-	$ST	$lo1,0($tp)	; tp[j-1]
-
-	addi	$j,$j,$BNSZ	; j++
-	addi	$tp,$tp,$BNSZ	; tp++
-	bdnz-	L1st
-;L1st
-	addc	$lo0,$alo,$hi0
-	addze	$hi0,$ahi
-
-	addc	$lo1,$nlo,$hi1
-	addze	$hi1,$nhi
-	addc	$lo1,$lo1,$lo0	; np[j]*m1+ap[j]*bp[0]
-	addze	$hi1,$hi1
-	$ST	$lo1,0($tp)	; tp[j-1]
-
-	li	$ovf,0
-	addc	$hi1,$hi1,$hi0
-	addze	$ovf,$ovf	; upmost overflow bit
-	$ST	$hi1,$BNSZ($tp)
-
-	li	$i,$BNSZ
-.align	4
-Louter:
-	$LDX	$m0,$bp,$i	; m0=bp[i]
-	$LD	$aj,0($ap)	; ap[0]
-	addi	$tp,$sp,$LOCALS
-	$LD	$tj,$LOCALS($sp); tp[0]
-	$UMULL	$lo0,$aj,$m0	; ap[0]*bp[i]
-	$UMULH	$hi0,$aj,$m0
-	$LD	$aj,$BNSZ($ap)	; ap[1]
-	$LD	$nj,0($np)	; np[0]
-	addc	$lo0,$lo0,$tj	; ap[0]*bp[i]+tp[0]
-	$UMULL	$alo,$aj,$m0	; ap[j]*bp[i]
-	addze	$hi0,$hi0
-	$UMULL	$m1,$lo0,$n0	; tp[0]*n0
-	$UMULH	$ahi,$aj,$m0
-	$UMULL	$lo1,$nj,$m1	; np[0]*m1
-	$UMULH	$hi1,$nj,$m1
-	$LD	$nj,$BNSZ($np)	; np[1]
-	addc	$lo1,$lo1,$lo0
-	$UMULL	$nlo,$nj,$m1	; np[1]*m1
-	addze	$hi1,$hi1
-	$UMULH	$nhi,$nj,$m1
-
-	mtctr	$num
-	li	$j,`2*$BNSZ`
-.align	4
-Linner:
-	$LDX	$aj,$ap,$j	; ap[j]
-	addc	$lo0,$alo,$hi0
-	$LD	$tj,$BNSZ($tp)	; tp[j]
-	addze	$hi0,$ahi
-	$LDX	$nj,$np,$j	; np[j]
-	addc	$lo1,$nlo,$hi1
-	$UMULL	$alo,$aj,$m0	; ap[j]*bp[i]
-	addze	$hi1,$nhi
-	$UMULH	$ahi,$aj,$m0
-	addc	$lo0,$lo0,$tj	; ap[j]*bp[i]+tp[j]
-	$UMULL	$nlo,$nj,$m1	; np[j]*m1
-	addze	$hi0,$hi0
-	$UMULH	$nhi,$nj,$m1
-	addc	$lo1,$lo1,$lo0	; np[j]*m1+ap[j]*bp[i]+tp[j]
-	addi	$j,$j,$BNSZ	; j++
-	addze	$hi1,$hi1
-	$ST	$lo1,0($tp)	; tp[j-1]
-	addi	$tp,$tp,$BNSZ	; tp++
-	bdnz-	Linner
-;Linner
-	$LD	$tj,$BNSZ($tp)	; tp[j]
-	addc	$lo0,$alo,$hi0
-	addze	$hi0,$ahi
-	addc	$lo0,$lo0,$tj	; ap[j]*bp[i]+tp[j]
-	addze	$hi0,$hi0
-
-	addc	$lo1,$nlo,$hi1
-	addze	$hi1,$nhi
-	addc	$lo1,$lo1,$lo0	; np[j]*m1+ap[j]*bp[i]+tp[j]
-	addze	$hi1,$hi1
-	$ST	$lo1,0($tp)	; tp[j-1]
-
-	addic	$ovf,$ovf,-1	; move upmost overflow to XER[CA]
-	li	$ovf,0
-	adde	$hi1,$hi1,$hi0
-	addze	$ovf,$ovf
-	$ST	$hi1,$BNSZ($tp)
-;
-	slwi	$tj,$num,`log($BNSZ)/log(2)`
-	$UCMP	$i,$tj
-	addi	$i,$i,$BNSZ
-	ble-	Louter
-
-	addi	$num,$num,2	; restore $num
-	subfc	$j,$j,$j	; j=0 and "clear" XER[CA]
-	addi	$tp,$sp,$LOCALS
-	mtctr	$num
-
-.align	4
-Lsub:	$LDX	$tj,$tp,$j
-	$LDX	$nj,$np,$j
-	subfe	$aj,$nj,$tj	; tp[j]-np[j]
-	$STX	$aj,$rp,$j
-	addi	$j,$j,$BNSZ
-	bdnz-	Lsub
-
-	li	$j,0
-	mtctr	$num
-	subfe	$ovf,$j,$ovf	; handle upmost overflow bit
-	and	$ap,$tp,$ovf
-	andc	$np,$rp,$ovf
-	or	$ap,$ap,$np	; ap=borrow?tp:rp
-
-.align	4
-Lcopy:				; copy or in-place refresh
-	$LDX	$tj,$ap,$j
-	$STX	$tj,$rp,$j
-	$STX	$j,$tp,$j	; zap at once
-	addi	$j,$j,$BNSZ
-	bdnz-	Lcopy
-
-	$POP	$tj,0($sp)
-	li	r3,1
-	$POP	r20,`-12*$SIZE_T`($tj)
-	$POP	r21,`-11*$SIZE_T`($tj)
-	$POP	r22,`-10*$SIZE_T`($tj)
-	$POP	r23,`-9*$SIZE_T`($tj)
-	$POP	r24,`-8*$SIZE_T`($tj)
-	$POP	r25,`-7*$SIZE_T`($tj)
-	$POP	r26,`-6*$SIZE_T`($tj)
-	$POP	r27,`-5*$SIZE_T`($tj)
-	$POP	r28,`-4*$SIZE_T`($tj)
-	$POP	r29,`-3*$SIZE_T`($tj)
-	$POP	r30,`-2*$SIZE_T`($tj)
-	$POP	r31,`-1*$SIZE_T`($tj)
-	mr	$sp,$tj
-	blr
-	.long	0
-	.byte	0,12,4,0,0x80,12,6,0
-	.long	0
-
-.asciz  "Montgomery Multiplication for PPC, CRYPTOGAMS by <appro\@openssl.org>"
-___
-
-$code =~ s/\`([^\`]*)\`/eval $1/gem;
-print $code;
-close STDOUT;