Merge branch 'feature/establish-an-upstream-relationship-with-ics-openvpn-codebase-#5381' into develop

1 files changed, 278 insertions, 0 deletions

diff --git a/app/openssl/crypto/bn/asm/armv4-gf2m.pl b/app/openssl/crypto/bn/asm/armv4-gf2m.pl
new file mode 100644
index 00000000..22ad1f85
--- /dev/null
+++ b/app/openssl/crypto/bn/asm/armv4-gf2m.pl
@@ -0,0 +1,278 @@
+#!/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