arm/crypto: Add optimized AES and SHA1 routines

Add assembler versions of AES and SHA1 for ARM platforms.  This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.

Platform   CPU SPeed    Endian   Before (bps)   After (bps)   Improvement

IXP425      533 MHz      big     11217042        15566294        ~38%
KS8695      166 MHz     little    3828549         5795373        ~51%

Signed-off-by: David McCullough <ucdevel@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 503 insertions, 0 deletions

diff --git a/arch/arm/crypto/sha1-armv4-large.S b/arch/arm/crypto/sha1-armv4-large.S
new file mode 100644
index 00000000000..7050ab133b9
--- /dev/null
+++ b/arch/arm/crypto/sha1-armv4-large.S
@@ -0,0 +1,503 @@
+#define __ARM_ARCH__ __LINUX_ARM_ARCH__
+@ ====================================================================
+@ 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/.
+@ ====================================================================
+
+@ sha1_block procedure for ARMv4.
+@
+@ January 2007.
+
+@ Size/performance trade-off
+@ ====================================================================
+@ impl		size in bytes	comp cycles[*]	measured performance
+@ ====================================================================
+@ thumb		304		3212		4420
+@ armv4-small	392/+29%	1958/+64%	2250/+96%
+@ armv4-compact	740/+89%	1552/+26%	1840/+22%
+@ armv4-large	1420/+92%	1307/+19%	1370/+34%[***]
+@ full unroll	~5100/+260%	~1260/+4%	~1300/+5%
+@ ====================================================================
+@ thumb		= same as 'small' but in Thumb instructions[**] and
+@		  with recurring code in two private functions;
+@ small		= detached Xload/update, loops are folded;
+@ compact	= detached Xload/update, 5x unroll;
+@ large		= interleaved Xload/update, 5x unroll;
+@ full unroll	= interleaved Xload/update, full unroll, estimated[!];
+@
+@ [*]	Manually counted instructions in "grand" loop body. Measured
+@	performance is affected by prologue and epilogue overhead,
+@	i-cache availability, branch penalties, etc.
+@ [**]	While each Thumb instruction is twice smaller, they are not as
+@	diverse as ARM ones: e.g., there are only two arithmetic
+@	instructions with 3 arguments, no [fixed] rotate, addressing
+@	modes are limited. As result it takes more instructions to do
+@	the same job in Thumb, therefore the code is never twice as
+@	small and always slower.
+@ [***]	which is also ~35% better than compiler generated code. Dual-
+@	issue Cortex A8 core was measured to process input block in
+@	~990 cycles.
+
+@ August 2010.
+@
+@ Rescheduling for dual-issue pipeline resulted in 13% improvement on
+@ Cortex A8 core and in absolute terms ~870 cycles per input block
+@ [or 13.6 cycles per byte].
+
+@ February 2011.
+@
+@ Profiler-assisted and platform-specific optimization resulted in 10%
+@ improvement on Cortex A8 core and 12.2 cycles per byte.
+
+.text
+
+.global	sha1_block_data_order
+.type	sha1_block_data_order,%function
+
+.align	2
+sha1_block_data_order:
+	stmdb	sp!,{r4-r12,lr}
+	add	r2,r1,r2,lsl#6	@ r2 to point at the end of r1
+	ldmia	r0,{r3,r4,r5,r6,r7}
+.Lloop:
+	ldr	r8,.LK_00_19
+	mov	r14,sp
+	sub	sp,sp,#15*4
+	mov	r5,r5,ror#30
+	mov	r6,r6,ror#30
+	mov	r7,r7,ror#30		@ [6]
+.L_00_15:
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r7,r8,r7,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r5,r6			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r7,r8,r7,ror#2			@ E+=K_00_19
+	eor	r10,r5,r6			@ F_xx_xx
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r4,r10,ror#2
+	add	r7,r7,r9			@ E+=X[i]
+	eor	r10,r10,r6,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r7,r7,r10			@ E+=F_00_19(B,C,D)
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r6,r8,r6,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r4,r5			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r6,r6,r7,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r6,r8,r6,ror#2			@ E+=K_00_19
+	eor	r10,r4,r5			@ F_xx_xx
+	add	r6,r6,r7,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r3,r10,ror#2
+	add	r6,r6,r9			@ E+=X[i]
+	eor	r10,r10,r5,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r6,r6,r10			@ E+=F_00_19(B,C,D)
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r5,r8,r5,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r3,r4			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r5,r5,r6,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r5,r8,r5,ror#2			@ E+=K_00_19
+	eor	r10,r3,r4			@ F_xx_xx
+	add	r5,r5,r6,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r7,r10,ror#2
+	add	r5,r5,r9			@ E+=X[i]
+	eor	r10,r10,r4,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r5,r5,r10			@ E+=F_00_19(B,C,D)
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r4,r8,r4,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r7,r3			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r4,r4,r5,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r4,r8,r4,ror#2			@ E+=K_00_19
+	eor	r10,r7,r3			@ F_xx_xx
+	add	r4,r4,r5,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r6,r10,ror#2
+	add	r4,r4,r9			@ E+=X[i]
+	eor	r10,r10,r3,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r4,r4,r10			@ E+=F_00_19(B,C,D)
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r3,r8,r3,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r6,r7			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r3,r3,r4,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r3,r8,r3,ror#2			@ E+=K_00_19
+	eor	r10,r6,r7			@ F_xx_xx
+	add	r3,r3,r4,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r5,r10,ror#2
+	add	r3,r3,r9			@ E+=X[i]
+	eor	r10,r10,r7,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r3,r3,r10			@ E+=F_00_19(B,C,D)
+	teq	r14,sp
+	bne	.L_00_15		@ [((11+4)*5+2)*3]
+#if __ARM_ARCH__<7
+	ldrb	r10,[r1,#2]
+	ldrb	r9,[r1,#3]
+	ldrb	r11,[r1,#1]
+	add	r7,r8,r7,ror#2			@ E+=K_00_19
+	ldrb	r12,[r1],#4
+	orr	r9,r9,r10,lsl#8
+	eor	r10,r5,r6			@ F_xx_xx
+	orr	r9,r9,r11,lsl#16
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+	orr	r9,r9,r12,lsl#24
+#else
+	ldr	r9,[r1],#4			@ handles unaligned
+	add	r7,r8,r7,ror#2			@ E+=K_00_19
+	eor	r10,r5,r6			@ F_xx_xx
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+#ifdef __ARMEL__
+	rev	r9,r9				@ byte swap
+#endif
+#endif
+	and	r10,r4,r10,ror#2
+	add	r7,r7,r9			@ E+=X[i]
+	eor	r10,r10,r6,ror#2		@ F_00_19(B,C,D)
+	str	r9,[r14,#-4]!
+	add	r7,r7,r10			@ E+=F_00_19(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r6,r8,r6,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r4,r5			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r6,r6,r7,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r3,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r6,r6,r9			@ E+=X[i]
+	eor	r10,r10,r5,ror#2		@ F_00_19(B,C,D)
+	add	r6,r6,r10			@ E+=F_00_19(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r5,r8,r5,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r3,r4			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r5,r5,r6,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r7,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r5,r5,r9			@ E+=X[i]
+	eor	r10,r10,r4,ror#2		@ F_00_19(B,C,D)
+	add	r5,r5,r10			@ E+=F_00_19(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r4,r8,r4,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r7,r3			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r4,r4,r5,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r6,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r4,r4,r9			@ E+=X[i]
+	eor	r10,r10,r3,ror#2		@ F_00_19(B,C,D)
+	add	r4,r4,r10			@ E+=F_00_19(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r3,r8,r3,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r6,r7			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r3,r3,r4,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r5,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r3,r3,r9			@ E+=X[i]
+	eor	r10,r10,r7,ror#2		@ F_00_19(B,C,D)
+	add	r3,r3,r10			@ E+=F_00_19(B,C,D)
+
+	ldr	r8,.LK_20_39		@ [+15+16*4]
+	sub	sp,sp,#25*4
+	cmn	sp,#0			@ [+3], clear carry to denote 20_39
+.L_20_39_or_60_79:
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r7,r8,r7,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r5,r6			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	eor r10,r4,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r7,r7,r9			@ E+=X[i]
+	add	r7,r7,r10			@ E+=F_20_39(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r6,r8,r6,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r4,r5			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r6,r6,r7,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	eor r10,r3,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r6,r6,r9			@ E+=X[i]
+	add	r6,r6,r10			@ E+=F_20_39(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r5,r8,r5,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r3,r4			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r5,r5,r6,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	eor r10,r7,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r5,r5,r9			@ E+=X[i]
+	add	r5,r5,r10			@ E+=F_20_39(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r4,r8,r4,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r7,r3			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r4,r4,r5,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	eor r10,r6,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r4,r4,r9			@ E+=X[i]
+	add	r4,r4,r10			@ E+=F_20_39(B,C,D)
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r3,r8,r3,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r6,r7			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r3,r3,r4,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	eor r10,r5,r10,ror#2					@ F_xx_xx
+						@ F_xx_xx
+	add	r3,r3,r9			@ E+=X[i]
+	add	r3,r3,r10			@ E+=F_20_39(B,C,D)
+	teq	r14,sp			@ preserve carry
+	bne	.L_20_39_or_60_79	@ [+((12+3)*5+2)*4]
+	bcs	.L_done			@ [+((12+3)*5+2)*4], spare 300 bytes
+
+	ldr	r8,.LK_40_59
+	sub	sp,sp,#20*4		@ [+2]
+.L_40_59:
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r7,r8,r7,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r5,r6			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r7,r7,r3,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r4,r10,ror#2					@ F_xx_xx
+	and r11,r5,r6					@ F_xx_xx
+	add	r7,r7,r9			@ E+=X[i]
+	add	r7,r7,r10			@ E+=F_40_59(B,C,D)
+	add	r7,r7,r11,ror#2
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r6,r8,r6,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r4,r5			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r6,r6,r7,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r3,r10,ror#2					@ F_xx_xx
+	and r11,r4,r5					@ F_xx_xx
+	add	r6,r6,r9			@ E+=X[i]
+	add	r6,r6,r10			@ E+=F_40_59(B,C,D)
+	add	r6,r6,r11,ror#2
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r5,r8,r5,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r3,r4			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r5,r5,r6,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r7,r10,ror#2					@ F_xx_xx
+	and r11,r3,r4					@ F_xx_xx
+	add	r5,r5,r9			@ E+=X[i]
+	add	r5,r5,r10			@ E+=F_40_59(B,C,D)
+	add	r5,r5,r11,ror#2
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r4,r8,r4,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r7,r3			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r4,r4,r5,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r6,r10,ror#2					@ F_xx_xx
+	and r11,r7,r3					@ F_xx_xx
+	add	r4,r4,r9			@ E+=X[i]
+	add	r4,r4,r10			@ E+=F_40_59(B,C,D)
+	add	r4,r4,r11,ror#2
+	ldr	r9,[r14,#15*4]
+	ldr	r10,[r14,#13*4]
+	ldr	r11,[r14,#7*4]
+	add	r3,r8,r3,ror#2			@ E+=K_xx_xx
+	ldr	r12,[r14,#2*4]
+	eor	r9,r9,r10
+	eor	r11,r11,r12			@ 1 cycle stall
+	eor	r10,r6,r7			@ F_xx_xx
+	mov	r9,r9,ror#31
+	add	r3,r3,r4,ror#27			@ E+=ROR(A,27)
+	eor	r9,r9,r11,ror#31
+	str	r9,[r14,#-4]!
+	and r10,r5,r10,ror#2					@ F_xx_xx
+	and r11,r6,r7					@ F_xx_xx
+	add	r3,r3,r9			@ E+=X[i]
+	add	r3,r3,r10			@ E+=F_40_59(B,C,D)
+	add	r3,r3,r11,ror#2
+	teq	r14,sp
+	bne	.L_40_59		@ [+((12+5)*5+2)*4]
+
+	ldr	r8,.LK_60_79
+	sub	sp,sp,#20*4
+	cmp	sp,#0			@ set carry to denote 60_79
+	b	.L_20_39_or_60_79	@ [+4], spare 300 bytes
+.L_done:
+	add	sp,sp,#80*4		@ "deallocate" stack frame
+	ldmia	r0,{r8,r9,r10,r11,r12}
+	add	r3,r8,r3
+	add	r4,r9,r4
+	add	r5,r10,r5,ror#2
+	add	r6,r11,r6,ror#2
+	add	r7,r12,r7,ror#2
+	stmia	r0,{r3,r4,r5,r6,r7}
+	teq	r1,r2
+	bne	.Lloop			@ [+18], total 1307
+
+#if __ARM_ARCH__>=5
+	ldmia	sp!,{r4-r12,pc}
+#else
+	ldmia	sp!,{r4-r12,lr}
+	tst	lr,#1
+	moveq	pc,lr			@ be binary compatible with V4, yet
+	.word	0xe12fff1e			@ interoperable with Thumb ISA:-)
+#endif
+.align	2
+.LK_00_19:	.word	0x5a827999
+.LK_20_39:	.word	0x6ed9eba1
+.LK_40_59:	.word	0x8f1bbcdc
+.LK_60_79:	.word	0xca62c1d6
+.size	sha1_block_data_order,.-sha1_block_data_order
+.asciz	"SHA1 block transform for ARMv4, CRYPTOGAMS by <appro@openssl.org>"
+.align	2