Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/bn/asm/armv4-gf2m.pl

Index: openssl/crypto/bn/asm/armv4-gf2m.pl
diff --git a/openssl/crypto/bn/asm/armv4-gf2m.pl b/openssl/crypto/bn/asm/armv4-gf2m.pl
deleted file mode 100644
index 22ad1f85f9df92940ffa483a130eed07ceaf732e..0000000000000000000000000000000000000000
--- a/openssl/crypto/bn/asm/armv4-gf2m.pl
+++ /dev/null
@@ -1,278 +0,0 @@
-#!/usr/bin/env perl
-#
-# ====================================================================
-# Written by Andy Polyakov <appro@openssl.org> 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/.
-# ====================================================================
-#
-# May 2011
-#
-# The module implements bn_GF2m_mul_2x2 polynomial multiplication
-# used in bn_gf2m.c. It's kind of low-hanging mechanical port from
-# C for the time being... Except that it has two code paths: pure
-# integer code suitable for any ARMv4 and later CPU and NEON code
-# suitable for ARMv7. Pure integer 1x1 multiplication subroutine runs
-# in ~45 cycles on dual-issue core such as Cortex A8, which is ~50%
-# faster than compiler-generated code. For ECDH and ECDSA verify (but
-# not for ECDSA sign) it means 25%-45% improvement depending on key
-# length, more for longer keys. Even though NEON 1x1 multiplication
-# runs in even less cycles, ~30, improvement is measurable only on
-# longer keys. One has to optimize code elsewhere to get NEON glow...
-
-while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
-open STDOUT,">$output";
-
-sub Dlo()   { shift=~m|q([1]?[0-9])|?"d".($1*2):"";     }
-sub Dhi()   { shift=~m|q([1]?[0-9])|?"d".($1*2+1):"";   }
-sub Q()     { shift=~m|d([1-3]?[02468])|?"q".($1/2):""; }
-
-$code=<<___;
-#include "arm_arch.h"
-
-.text
-.code	32
-
-#if __ARM_ARCH__>=7
-.fpu	neon
-
-.type	mul_1x1_neon,%function
-.align	5
-mul_1x1_neon:
-	vshl.u64	`&Dlo("q1")`,d16,#8	@ q1-q3 are slided $a
-	vmull.p8	`&Q("d0")`,d16,d17	@ a·bb
-	vshl.u64	`&Dlo("q2")`,d16,#16
-	vmull.p8	q1,`&Dlo("q1")`,d17	@ a<<8·bb
-	vshl.u64	`&Dlo("q3")`,d16,#24
-	vmull.p8	q2,`&Dlo("q2")`,d17	@ a<<16·bb
-	vshr.u64	`&Dlo("q1")`,#8
-	vmull.p8	q3,`&Dlo("q3")`,d17	@ a<<24·bb
-	vshl.u64	`&Dhi("q1")`,#24
-	veor		d0,`&Dlo("q1")`
-	vshr.u64	`&Dlo("q2")`,#16
-	veor		d0,`&Dhi("q1")`
-	vshl.u64	`&Dhi("q2")`,#16
-	veor		d0,`&Dlo("q2")`
-	vshr.u64	`&Dlo("q3")`,#24
-	veor		d0,`&Dhi("q2")`
-	vshl.u64	`&Dhi("q3")`,#8
-	veor		d0,`&Dlo("q3")`
-	veor		d0,`&Dhi("q3")`
-	bx	lr
-.size	mul_1x1_neon,.-mul_1x1_neon
-#endif
-___
-################
-# private interface to mul_1x1_ialu
-#
-$a="r1";
-$b="r0";
-
-($a0,$a1,$a2,$a12,$a4,$a14)=
-($hi,$lo,$t0,$t1, $i0,$i1 )=map("r$_",(4..9),12);
-
-$mask="r12";
-
-$code.=<<___;
-.type	mul_1x1_ialu,%function
-.align	5
-mul_1x1_ialu:
-	mov	$a0,#0
-	bic	$a1,$a,#3<<30		@ a1=a&0x3fffffff
-	str	$a0,[sp,#0]		@ tab[0]=0
-	add	$a2,$a1,$a1		@ a2=a1<<1
-	str	$a1,[sp,#4]		@ tab[1]=a1
-	eor	$a12,$a1,$a2		@ a1^a2
-	str	$a2,[sp,#8]		@ tab[2]=a2
-	mov	$a4,$a1,lsl#2		@ a4=a1<<2
-	str	$a12,[sp,#12]		@ tab[3]=a1^a2
-	eor	$a14,$a1,$a4		@ a1^a4
-	str	$a4,[sp,#16]		@ tab[4]=a4
-	eor	$a0,$a2,$a4		@ a2^a4
-	str	$a14,[sp,#20]		@ tab[5]=a1^a4
-	eor	$a12,$a12,$a4		@ a1^a2^a4
-	str	$a0,[sp,#24]		@ tab[6]=a2^a4
-	and	$i0,$mask,$b,lsl#2
-	str	$a12,[sp,#28]		@ tab[7]=a1^a2^a4
-
-	and	$i1,$mask,$b,lsr#1
-	ldr	$lo,[sp,$i0]		@ tab[b       & 0x7]
-	and	$i0,$mask,$b,lsr#4
-	ldr	$t1,[sp,$i1]		@ tab[b >>  3 & 0x7]
-	and	$i1,$mask,$b,lsr#7
-	ldr	$t0,[sp,$i0]		@ tab[b >>  6 & 0x7]
-	eor	$lo,$lo,$t1,lsl#3	@ stall
-	mov	$hi,$t1,lsr#29
-	ldr	$t1,[sp,$i1]		@ tab[b >>  9 & 0x7]
-
-	and	$i0,$mask,$b,lsr#10
-	eor	$lo,$lo,$t0,lsl#6
-	eor	$hi,$hi,$t0,lsr#26
-	ldr	$t0,[sp,$i0]		@ tab[b >> 12 & 0x7]
-
-	and	$i1,$mask,$b,lsr#13
-	eor	$lo,$lo,$t1,lsl#9
-	eor	$hi,$hi,$t1,lsr#23
-	ldr	$t1,[sp,$i1]		@ tab[b >> 15 & 0x7]
-
-	and	$i0,$mask,$b,lsr#16
-	eor	$lo,$lo,$t0,lsl#12
-	eor	$hi,$hi,$t0,lsr#20
-	ldr	$t0,[sp,$i0]		@ tab[b >> 18 & 0x7]
-
-	and	$i1,$mask,$b,lsr#19
-	eor	$lo,$lo,$t1,lsl#15
-	eor	$hi,$hi,$t1,lsr#17
-	ldr	$t1,[sp,$i1]		@ tab[b >> 21 & 0x7]
-
-	and	$i0,$mask,$b,lsr#22
-	eor	$lo,$lo,$t0,lsl#18
-	eor	$hi,$hi,$t0,lsr#14
-	ldr	$t0,[sp,$i0]		@ tab[b >> 24 & 0x7]
-
-	and	$i1,$mask,$b,lsr#25
-	eor	$lo,$lo,$t1,lsl#21
-	eor	$hi,$hi,$t1,lsr#11
-	ldr	$t1,[sp,$i1]		@ tab[b >> 27 & 0x7]
-
-	tst	$a,#1<<30
-	and	$i0,$mask,$b,lsr#28
-	eor	$lo,$lo,$t0,lsl#24
-	eor	$hi,$hi,$t0,lsr#8
-	ldr	$t0,[sp,$i0]		@ tab[b >> 30      ]
-
-	eorne	$lo,$lo,$b,lsl#30
-	eorne	$hi,$hi,$b,lsr#2
-	tst	$a,#1<<31
-	eor	$lo,$lo,$t1,lsl#27
-	eor	$hi,$hi,$t1,lsr#5
-	eorne	$lo,$lo,$b,lsl#31
-	eorne	$hi,$hi,$b,lsr#1
-	eor	$lo,$lo,$t0,lsl#30
-	eor	$hi,$hi,$t0,lsr#2
-
-	mov	pc,lr
-.size	mul_1x1_ialu,.-mul_1x1_ialu
-___
-################
-# void	bn_GF2m_mul_2x2(BN_ULONG *r,
-#	BN_ULONG a1,BN_ULONG a0,
-#	BN_ULONG b1,BN_ULONG b0);	# r[3..0]=a1a0·b1b0
-
-($A1,$B1,$A0,$B0,$A1B1,$A0B0)=map("d$_",(18..23));
-
-$code.=<<___;
-.global	bn_GF2m_mul_2x2
-.type	bn_GF2m_mul_2x2,%function
-.align	5
-bn_GF2m_mul_2x2:
-#if __ARM_ARCH__>=7
-	ldr	r12,.LOPENSSL_armcap
-.Lpic:	ldr	r12,[pc,r12]
-	tst	r12,#1
-	beq	.Lialu
-
-	veor	$A1,$A1
-	vmov.32	$B1,r3,r3		@ two copies of b1
-	vmov.32	${A1}[0],r1		@ a1
-
-	veor	$A0,$A0
-	vld1.32	${B0}[],[sp,:32]	@ two copies of b0
-	vmov.32	${A0}[0],r2		@ a0
-	mov	r12,lr
-
-	vmov	d16,$A1
-	vmov	d17,$B1
-	bl	mul_1x1_neon		@ a1·b1
-	vmov	$A1B1,d0
-
-	vmov	d16,$A0
-	vmov	d17,$B0
-	bl	mul_1x1_neon		@ a0·b0
-	vmov	$A0B0,d0
-
-	veor	d16,$A0,$A1
-	veor	d17,$B0,$B1
-	veor	$A0,$A0B0,$A1B1
-	bl	mul_1x1_neon		@ (a0+a1)·(b0+b1)
-
-	veor	d0,$A0			@ (a0+a1)·(b0+b1)-a0·b0-a1·b1
-	vshl.u64 d1,d0,#32
-	vshr.u64 d0,d0,#32
-	veor	$A0B0,d1
-	veor	$A1B1,d0
-	vst1.32	{${A0B0}[0]},[r0,:32]!
-	vst1.32	{${A0B0}[1]},[r0,:32]!
-	vst1.32	{${A1B1}[0]},[r0,:32]!
-	vst1.32	{${A1B1}[1]},[r0,:32]
-	bx	r12
-.align	4
-.Lialu:
-#endif
-___
-$ret="r10";	# reassigned 1st argument
-$code.=<<___;
-	stmdb	sp!,{r4-r10,lr}
-	mov	$ret,r0			@ reassign 1st argument
-	mov	$b,r3			@ $b=b1
-	ldr	r3,[sp,#32]		@ load b0
-	mov	$mask,#7<<2
-	sub	sp,sp,#32		@ allocate tab[8]
-
-	bl	mul_1x1_ialu		@ a1·b1
-	str	$lo,[$ret,#8]
-	str	$hi,[$ret,#12]
-
-	eor	$b,$b,r3		@ flip b0 and b1
-	 eor	$a,$a,r2		@ flip a0 and a1
-	eor	r3,r3,$b
-	 eor	r2,r2,$a
-	eor	$b,$b,r3
-	 eor	$a,$a,r2
-	bl	mul_1x1_ialu		@ a0·b0
-	str	$lo,[$ret]
-	str	$hi,[$ret,#4]
-
-	eor	$a,$a,r2
-	eor	$b,$b,r3
-	bl	mul_1x1_ialu		@ (a1+a0)·(b1+b0)
-___
-@r=map("r$_",(6..9));
-$code.=<<___;
-	ldmia	$ret,{@r[0]-@r[3]}
-	eor	$lo,$lo,$hi
-	eor	$hi,$hi,@r[1]
-	eor	$lo,$lo,@r[0]
-	eor	$hi,$hi,@r[2]
-	eor	$lo,$lo,@r[3]
-	eor	$hi,$hi,@r[3]
-	str	$hi,[$ret,#8]
-	eor	$lo,$lo,$hi
-	add	sp,sp,#32		@ destroy tab[8]
-	str	$lo,[$ret,#4]
-
-#if __ARM_ARCH__>=5
-	ldmia	sp!,{r4-r10,pc}
-#else
-	ldmia	sp!,{r4-r10,lr}
-	tst	lr,#1
-	moveq	pc,lr			@ be binary compatible with V4, yet
-	bx	lr			@ interoperable with Thumb ISA:-)
-#endif
-.size	bn_GF2m_mul_2x2,.-bn_GF2m_mul_2x2
-#if __ARM_ARCH__>=7
-.align	5
-.LOPENSSL_armcap:
-.word	OPENSSL_armcap_P-(.Lpic+8)
-#endif
-.asciz	"GF(2^m) Multiplication for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>"
-.align	5
-
-.comm	OPENSSL_armcap_P,4,4
-___
-
-$code =~ s/\`([^\`]*)\`/eval $1/gem;
-$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm;    # make it possible to compile with -march=armv4
-print $code;
-close STDOUT;   # enforce flush