Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/sha/asm/sha256-armv4.pl

Index: openssl/crypto/sha/asm/sha256-armv4.pl
diff --git a/openssl/crypto/sha/asm/sha256-armv4.pl b/openssl/crypto/sha/asm/sha256-armv4.pl
deleted file mode 100644
index 9c84e8d93c301a35b544b112cb87a90b7ddbd573..0000000000000000000000000000000000000000
--- a/openssl/crypto/sha/asm/sha256-armv4.pl
+++ /dev/null
@@ -1,211 +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/.
-# ====================================================================
-
-# SHA256 block procedure for ARMv4. May 2007.
-
-# Performance is ~2x better than gcc 3.4 generated code and in "abso-
-# lute" terms is ~2250 cycles per 64-byte block or ~35 cycles per
-# byte [on single-issue Xscale PXA250 core].
-
-# July 2010.
-#
-# Rescheduling for dual-issue pipeline resulted in 22% improvement on
-# Cortex A8 core and ~20 cycles per processed byte.
-
-# February 2011.
-#
-# Profiler-assisted and platform-specific optimization resulted in 16%
-# improvement on Cortex A8 core and ~17 cycles per processed byte.
-
-while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
-open STDOUT,">$output";
-
-$ctx="r0";	$t0="r0";
-$inp="r1";	$t3="r1";
-$len="r2";	$t1="r2";
-$T1="r3";
-$A="r4";
-$B="r5";
-$C="r6";
-$D="r7";
-$E="r8";
-$F="r9";
-$G="r10";
-$H="r11";
-@V=($A,$B,$C,$D,$E,$F,$G,$H);
-$t2="r12";
-$Ktbl="r14";
-
-@Sigma0=( 2,13,22);
-@Sigma1=( 6,11,25);
-@sigma0=( 7,18, 3);
-@sigma1=(17,19,10);
-
-sub BODY_00_15 {
-my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
-
-$code.=<<___ if ($i<16);
-#if __ARM_ARCH__>=7
-	ldr	$T1,[$inp],#4
-#else
-	ldrb	$T1,[$inp,#3]			@ $i
-	ldrb	$t2,[$inp,#2]
-	ldrb	$t1,[$inp,#1]
-	ldrb	$t0,[$inp],#4
-	orr	$T1,$T1,$t2,lsl#8
-	orr	$T1,$T1,$t1,lsl#16
-	orr	$T1,$T1,$t0,lsl#24
-#endif
-___
-$code.=<<___;
-	mov	$t0,$e,ror#$Sigma1[0]
-	ldr	$t2,[$Ktbl],#4			@ *K256++
-	eor	$t0,$t0,$e,ror#$Sigma1[1]
-	eor	$t1,$f,$g
-#if $i>=16
-	add	$T1,$T1,$t3			@ from BODY_16_xx
-#elif __ARM_ARCH__>=7 && defined(__ARMEL__)
-	rev	$T1,$T1
-#endif
-#if $i==15
-	str	$inp,[sp,#17*4]			@ leave room for $t3
-#endif
-	eor	$t0,$t0,$e,ror#$Sigma1[2]	@ Sigma1(e)
-	and	$t1,$t1,$e
-	str	$T1,[sp,#`$i%16`*4]
-	add	$T1,$T1,$t0
-	eor	$t1,$t1,$g			@ Ch(e,f,g)
-	add	$T1,$T1,$h
-	mov	$h,$a,ror#$Sigma0[0]
-	add	$T1,$T1,$t1
-	eor	$h,$h,$a,ror#$Sigma0[1]
-	add	$T1,$T1,$t2
-	eor	$h,$h,$a,ror#$Sigma0[2]		@ Sigma0(a)
-#if $i>=15
-	ldr	$t3,[sp,#`($i+2)%16`*4]		@ from BODY_16_xx
-#endif
-	orr	$t0,$a,$b
-	and	$t1,$a,$b
-	and	$t0,$t0,$c
-	add	$h,$h,$T1
-	orr	$t0,$t0,$t1			@ Maj(a,b,c)
-	add	$d,$d,$T1
-	add	$h,$h,$t0
-___
-}
-
-sub BODY_16_XX {
-my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
-
-$code.=<<___;
-	@ ldr	$t3,[sp,#`($i+1)%16`*4]		@ $i
-	ldr	$t2,[sp,#`($i+14)%16`*4]
-	mov	$t0,$t3,ror#$sigma0[0]
-	ldr	$T1,[sp,#`($i+0)%16`*4]
-	eor	$t0,$t0,$t3,ror#$sigma0[1]
-	ldr	$t1,[sp,#`($i+9)%16`*4]
-	eor	$t0,$t0,$t3,lsr#$sigma0[2]	@ sigma0(X[i+1])
-	mov	$t3,$t2,ror#$sigma1[0]
-	add	$T1,$T1,$t0
-	eor	$t3,$t3,$t2,ror#$sigma1[1]
-	add	$T1,$T1,$t1
-	eor	$t3,$t3,$t2,lsr#$sigma1[2]	@ sigma1(X[i+14])
-	@ add	$T1,$T1,$t3
-___
-	&BODY_00_15(@_);
-}
-
-$code=<<___;
-#include "arm_arch.h"
-
-.text
-.code	32
-
-.type	K256,%object
-.align	5
-K256:
-.word	0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
-.word	0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
-.word	0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
-.word	0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
-.word	0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
-.word	0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
-.word	0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
-.word	0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
-.word	0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
-.word	0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
-.word	0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
-.word	0xd192e819,0xd6990624,0xf40e3585,0x106aa070
-.word	0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
-.word	0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
-.word	0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
-.word	0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
-.size	K256,.-K256
-
-.global	sha256_block_data_order
-.type	sha256_block_data_order,%function
-sha256_block_data_order:
-	sub	r3,pc,#8		@ sha256_block_data_order
-	add	$len,$inp,$len,lsl#6	@ len to point at the end of inp
-	stmdb	sp!,{$ctx,$inp,$len,r4-r11,lr}
-	ldmia	$ctx,{$A,$B,$C,$D,$E,$F,$G,$H}
-	sub	$Ktbl,r3,#256		@ K256
-	sub	sp,sp,#16*4		@ alloca(X[16])
-.Loop:
-___
-for($i=0;$i<16;$i++)	{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
-$code.=".Lrounds_16_xx:\n";
-for (;$i<32;$i++)	{ &BODY_16_XX($i,@V); unshift(@V,pop(@V)); }
-$code.=<<___;
-	and	$t2,$t2,#0xff
-	cmp	$t2,#0xf2
-	bne	.Lrounds_16_xx
-
-	ldr	$T1,[sp,#16*4]		@ pull ctx
-	ldr	$t0,[$T1,#0]
-	ldr	$t1,[$T1,#4]
-	ldr	$t2,[$T1,#8]
-	add	$A,$A,$t0
-	ldr	$t0,[$T1,#12]
-	add	$B,$B,$t1
-	ldr	$t1,[$T1,#16]
-	add	$C,$C,$t2
-	ldr	$t2,[$T1,#20]
-	add	$D,$D,$t0
-	ldr	$t0,[$T1,#24]
-	add	$E,$E,$t1
-	ldr	$t1,[$T1,#28]
-	add	$F,$F,$t2
-	ldr	$inp,[sp,#17*4]		@ pull inp
-	ldr	$t2,[sp,#18*4]		@ pull inp+len
-	add	$G,$G,$t0
-	add	$H,$H,$t1
-	stmia	$T1,{$A,$B,$C,$D,$E,$F,$G,$H}
-	cmp	$inp,$t2
-	sub	$Ktbl,$Ktbl,#256	@ rewind Ktbl
-	bne	.Loop
-
-	add	sp,sp,#`16+3`*4	@ destroy frame
-#if __ARM_ARCH__>=5
-	ldmia	sp!,{r4-r11,pc}
-#else
-	ldmia	sp!,{r4-r11,lr}
-	tst	lr,#1
-	moveq	pc,lr			@ be binary compatible with V4, yet
-	bx	lr			@ interoperable with Thumb ISA:-)
-#endif
-.size   sha256_block_data_order,.-sha256_block_data_order
-.asciz  "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
-.align	2
-___
-
-$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