+#!/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/.
+# ====================================================================
+
+# SHA512 block procedure for ARMv4. September 2007.
+
+# This code is ~4.5 (four and a half) times faster than code generated
+# by gcc 3.4 and it spends ~72 clock cycles per byte.
+
+# This module currently has dependency on byte order, namely *dword*
+# order in ctx->h[0-9]. I have to think of a way to reliably detect
+# "endianness" [and flip below two constants] or arrange given dword
+# order in C.
+$lo=0; # this denotes little-endian platform.
+$hi=4;
+
+$ctx="r0";
+$inp="r1";
+$len="r2";
+$Tlo="r3";
+$Thi="r4";
+$Alo="r5";
+$Ahi="r6";
+$Elo="r7";
+$Ehi="r8";
+$t0="r9";
+$t1="r10";
+$t2="r11";
+$t3="r12";
+############ r13 is stack pointer
+$Ktbl="r14";
+############ r15 is program counter
+
+$Aoff=8*0;
+$Boff=8*1;
+$Coff=8*2;
+$Doff=8*3;
+$Eoff=8*4;
+$Foff=8*5;
+$Goff=8*6;
+$Hoff=8*7;
+$Xoff=8*8;
+
+sub BODY_00_15() {
+my $magic = shift;
+$code.=<<___;
+ ldr $t2,[sp,#$Hoff+0] @ h.lo
+ ldr $t3,[sp,#$Hoff+4] @ h.hi
+ @ Sigma1(x) (ROTR((x),14) ^ ROTR((x),18) ^ ROTR((x),41))
+ @ LO lo>>14^hi<<18 ^ lo>>18^hi<<14 ^ hi>>9^lo<<23
+ @ HI hi>>14^lo<<18 ^ hi>>18^lo<<14 ^ lo>>9^hi<<23
+ mov $t0,$Elo,lsr#14
+ mov $t1,$Ehi,lsr#14
+ eor $t0,$t0,$Ehi,lsl#18
+ eor $t1,$t1,$Elo,lsl#18
+ eor $t0,$t0,$Elo,lsr#18
+ eor $t1,$t1,$Ehi,lsr#18
+ eor $t0,$t0,$Ehi,lsl#14
+ eor $t1,$t1,$Elo,lsl#14
+ eor $t0,$t0,$Ehi,lsr#9
+ eor $t1,$t1,$Elo,lsr#9
+ eor $t0,$t0,$Elo,lsl#23
+ eor $t1,$t1,$Ehi,lsl#23 @ Sigma1(e)
+ adds $Tlo,$Tlo,$t0
+ adc $Thi,$Thi,$t1 @ T += Sigma1(e)
+ adds $Tlo,$Tlo,$t2
+ adc $Thi,$Thi,$t3 @ T += h
+
+ ldr $t0,[sp,#$Foff+0] @ f.lo
+ ldr $t1,[sp,#$Foff+4] @ f.hi
+ ldr $t2,[sp,#$Goff+0] @ g.lo
+ ldr $t3,[sp,#$Goff+4] @ g.hi
+ str $Elo,[sp,#$Eoff+0]
+ str $Ehi,[sp,#$Eoff+4]
+ str $Alo,[sp,#$Aoff+0]
+ str $Ahi,[sp,#$Aoff+4]
+
+ eor $t0,$t0,$t2
+ eor $t1,$t1,$t3
+ and $t0,$t0,$Elo
+ and $t1,$t1,$Ehi
+ eor $t0,$t0,$t2
+ eor $t1,$t1,$t3 @ Ch(e,f,g)
+
+ ldr $t2,[$Ktbl,#4] @ K[i].lo
+ ldr $t3,[$Ktbl,#0] @ K[i].hi
+ ldr $Elo,[sp,#$Doff+0] @ d.lo
+ ldr $Ehi,[sp,#$Doff+4] @ d.hi
+
+ adds $Tlo,$Tlo,$t0
+ adc $Thi,$Thi,$t1 @ T += Ch(e,f,g)
+ adds $Tlo,$Tlo,$t2
+ adc $Thi,$Thi,$t3 @ T += K[i]
+ adds $Elo,$Elo,$Tlo
+ adc $Ehi,$Ehi,$Thi @ d += T
+
+ and $t0,$t2,#0xff
+ teq $t0,#$magic
+ orreq $Ktbl,$Ktbl,#1
+
+ ldr $t2,[sp,#$Boff+0] @ b.lo
+ ldr $t3,[sp,#$Coff+0] @ c.lo
+ @ Sigma0(x) (ROTR((x),28) ^ ROTR((x),34) ^ ROTR((x),39))
+ @ LO lo>>28^hi<<4 ^ hi>>2^lo<<30 ^ hi>>7^lo<<25
+ @ HI hi>>28^lo<<4 ^ lo>>2^hi<<30 ^ lo>>7^hi<<25
+ mov $t0,$Alo,lsr#28
+ mov $t1,$Ahi,lsr#28
+ eor $t0,$t0,$Ahi,lsl#4
+ eor $t1,$t1,$Alo,lsl#4
+ eor $t0,$t0,$Ahi,lsr#2
+ eor $t1,$t1,$Alo,lsr#2
+ eor $t0,$t0,$Alo,lsl#30
+ eor $t1,$t1,$Ahi,lsl#30
+ eor $t0,$t0,$Ahi,lsr#7
+ eor $t1,$t1,$Alo,lsr#7
+ eor $t0,$t0,$Alo,lsl#25
+ eor $t1,$t1,$Ahi,lsl#25 @ Sigma0(a)
+ adds $Tlo,$Tlo,$t0
+ adc $Thi,$Thi,$t1 @ T += Sigma0(a)
+
+ and $t0,$Alo,$t2
+ orr $Alo,$Alo,$t2
+ ldr $t1,[sp,#$Boff+4] @ b.hi
+ ldr $t2,[sp,#$Coff+4] @ c.hi
+ and $Alo,$Alo,$t3
+ orr $Alo,$Alo,$t0 @ Maj(a,b,c).lo
+ and $t3,$Ahi,$t1
+ orr $Ahi,$Ahi,$t1
+ and $Ahi,$Ahi,$t2
+ orr $Ahi,$Ahi,$t3 @ Maj(a,b,c).hi
+ adds $Alo,$Alo,$Tlo
+ adc $Ahi,$Ahi,$Thi @ h += T
+
+ sub sp,sp,#8
+ add $Ktbl,$Ktbl,#8
+___
+}
+$code=<<___;
+.text
+.code 32
+.type K512,%object
+.align 5
+K512:
+.word 0x428a2f98,0xd728ae22, 0x71374491,0x23ef65cd
+.word 0xb5c0fbcf,0xec4d3b2f, 0xe9b5dba5,0x8189dbbc
+.word 0x3956c25b,0xf348b538, 0x59f111f1,0xb605d019
+.word 0x923f82a4,0xaf194f9b, 0xab1c5ed5,0xda6d8118
+.word 0xd807aa98,0xa3030242, 0x12835b01,0x45706fbe
+.word 0x243185be,0x4ee4b28c, 0x550c7dc3,0xd5ffb4e2
+.word 0x72be5d74,0xf27b896f, 0x80deb1fe,0x3b1696b1
+.word 0x9bdc06a7,0x25c71235, 0xc19bf174,0xcf692694
+.word 0xe49b69c1,0x9ef14ad2, 0xefbe4786,0x384f25e3
+.word 0x0fc19dc6,0x8b8cd5b5, 0x240ca1cc,0x77ac9c65
+.word 0x2de92c6f,0x592b0275, 0x4a7484aa,0x6ea6e483
+.word 0x5cb0a9dc,0xbd41fbd4, 0x76f988da,0x831153b5
+.word 0x983e5152,0xee66dfab, 0xa831c66d,0x2db43210
+.word 0xb00327c8,0x98fb213f, 0xbf597fc7,0xbeef0ee4
+.word 0xc6e00bf3,0x3da88fc2, 0xd5a79147,0x930aa725
+.word 0x06ca6351,0xe003826f, 0x14292967,0x0a0e6e70
+.word 0x27b70a85,0x46d22ffc, 0x2e1b2138,0x5c26c926
+.word 0x4d2c6dfc,0x5ac42aed, 0x53380d13,0x9d95b3df
+.word 0x650a7354,0x8baf63de, 0x766a0abb,0x3c77b2a8
+.word 0x81c2c92e,0x47edaee6, 0x92722c85,0x1482353b
+.word 0xa2bfe8a1,0x4cf10364, 0xa81a664b,0xbc423001
+.word 0xc24b8b70,0xd0f89791, 0xc76c51a3,0x0654be30
+.word 0xd192e819,0xd6ef5218, 0xd6990624,0x5565a910
+.word 0xf40e3585,0x5771202a, 0x106aa070,0x32bbd1b8
+.word 0x19a4c116,0xb8d2d0c8, 0x1e376c08,0x5141ab53
+.word 0x2748774c,0xdf8eeb99, 0x34b0bcb5,0xe19b48a8
+.word 0x391c0cb3,0xc5c95a63, 0x4ed8aa4a,0xe3418acb
+.word 0x5b9cca4f,0x7763e373, 0x682e6ff3,0xd6b2b8a3
+.word 0x748f82ee,0x5defb2fc, 0x78a5636f,0x43172f60
+.word 0x84c87814,0xa1f0ab72, 0x8cc70208,0x1a6439ec
+.word 0x90befffa,0x23631e28, 0xa4506ceb,0xde82bde9
+.word 0xbef9a3f7,0xb2c67915, 0xc67178f2,0xe372532b
+.word 0xca273ece,0xea26619c, 0xd186b8c7,0x21c0c207
+.word 0xeada7dd6,0xcde0eb1e, 0xf57d4f7f,0xee6ed178
+.word 0x06f067aa,0x72176fba, 0x0a637dc5,0xa2c898a6
+.word 0x113f9804,0xbef90dae, 0x1b710b35,0x131c471b
+.word 0x28db77f5,0x23047d84, 0x32caab7b,0x40c72493
+.word 0x3c9ebe0a,0x15c9bebc, 0x431d67c4,0x9c100d4c
+.word 0x4cc5d4be,0xcb3e42b6, 0x597f299c,0xfc657e2a
+.word 0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817
+.size K512,.-K512
+
+.global sha512_block_data_order
+.type sha512_block_data_order,%function
+sha512_block_data_order:
+ sub r3,pc,#8 @ sha512_block_data_order
+ add $len,$inp,$len,lsl#7 @ len to point at the end of inp
+ stmdb sp!,{r4-r12,lr}
+ sub $Ktbl,r3,#640 @ K512
+ sub sp,sp,#9*8
+
+ ldr $Elo,[$ctx,#$Eoff+$lo]
+ ldr $Ehi,[$ctx,#$Eoff+$hi]
+ ldr $t0, [$ctx,#$Goff+$lo]
+ ldr $t1, [$ctx,#$Goff+$hi]
+ ldr $t2, [$ctx,#$Hoff+$lo]
+ ldr $t3, [$ctx,#$Hoff+$hi]
+.Loop:
+ str $t0, [sp,#$Goff+0]
+ str $t1, [sp,#$Goff+4]
+ str $t2, [sp,#$Hoff+0]
+ str $t3, [sp,#$Hoff+4]
+ ldr $Alo,[$ctx,#$Aoff+$lo]
+ ldr $Ahi,[$ctx,#$Aoff+$hi]
+ ldr $Tlo,[$ctx,#$Boff+$lo]
+ ldr $Thi,[$ctx,#$Boff+$hi]
+ ldr $t0, [$ctx,#$Coff+$lo]
+ ldr $t1, [$ctx,#$Coff+$hi]
+ ldr $t2, [$ctx,#$Doff+$lo]
+ ldr $t3, [$ctx,#$Doff+$hi]
+ str $Tlo,[sp,#$Boff+0]
+ str $Thi,[sp,#$Boff+4]
+ str $t0, [sp,#$Coff+0]
+ str $t1, [sp,#$Coff+4]
+ str $t2, [sp,#$Doff+0]
+ str $t3, [sp,#$Doff+4]
+ ldr $Tlo,[$ctx,#$Foff+$lo]
+ ldr $Thi,[$ctx,#$Foff+$hi]
+ str $Tlo,[sp,#$Foff+0]
+ str $Thi,[sp,#$Foff+4]
+
+.L00_15:
+ ldrb $Tlo,[$inp,#7]
+ ldrb $t0, [$inp,#6]
+ ldrb $t1, [$inp,#5]
+ ldrb $t2, [$inp,#4]
+ ldrb $Thi,[$inp,#3]
+ ldrb $t3, [$inp,#2]
+ orr $Tlo,$Tlo,$t0,lsl#8
+ ldrb $t0, [$inp,#1]
+ orr $Tlo,$Tlo,$t1,lsl#16
+ ldrb $t1, [$inp],#8
+ orr $Tlo,$Tlo,$t2,lsl#24
+ orr $Thi,$Thi,$t3,lsl#8
+ orr $Thi,$Thi,$t0,lsl#16
+ orr $Thi,$Thi,$t1,lsl#24
+ str $Tlo,[sp,#$Xoff+0]
+ str $Thi,[sp,#$Xoff+4]
+___
+ &BODY_00_15(0x94);
+$code.=<<___;
+ tst $Ktbl,#1
+ beq .L00_15
+ bic $Ktbl,$Ktbl,#1
+
+.L16_79:
+ ldr $t0,[sp,#`$Xoff+8*(16-1)`+0]
+ ldr $t1,[sp,#`$Xoff+8*(16-1)`+4]
+ ldr $t2,[sp,#`$Xoff+8*(16-14)`+0]
+ ldr $t3,[sp,#`$Xoff+8*(16-14)`+4]
+
+ @ sigma0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7))
+ @ LO lo>>1^hi<<31 ^ lo>>8^hi<<24 ^ lo>>7^hi<<25
+ @ HI hi>>1^lo<<31 ^ hi>>8^lo<<24 ^ hi>>7
+ mov $Tlo,$t0,lsr#1
+ mov $Thi,$t1,lsr#1
+ eor $Tlo,$Tlo,$t1,lsl#31
+ eor $Thi,$Thi,$t0,lsl#31
+ eor $Tlo,$Tlo,$t0,lsr#8
+ eor $Thi,$Thi,$t1,lsr#8
+ eor $Tlo,$Tlo,$t1,lsl#24
+ eor $Thi,$Thi,$t0,lsl#24
+ eor $Tlo,$Tlo,$t0,lsr#7
+ eor $Thi,$Thi,$t1,lsr#7
+ eor $Tlo,$Tlo,$t1,lsl#25
+
+ @ sigma1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6))
+ @ LO lo>>19^hi<<13 ^ hi>>29^lo<<3 ^ lo>>6^hi<<26
+ @ HI hi>>19^lo<<13 ^ lo>>29^hi<<3 ^ hi>>6
+ mov $t0,$t2,lsr#19
+ mov $t1,$t3,lsr#19
+ eor $t0,$t0,$t3,lsl#13
+ eor $t1,$t1,$t2,lsl#13
+ eor $t0,$t0,$t3,lsr#29
+ eor $t1,$t1,$t2,lsr#29
+ eor $t0,$t0,$t2,lsl#3
+ eor $t1,$t1,$t3,lsl#3
+ eor $t0,$t0,$t2,lsr#6
+ eor $t1,$t1,$t3,lsr#6
+ eor $t0,$t0,$t3,lsl#26
+
+ ldr $t2,[sp,#`$Xoff+8*(16-9)`+0]
+ ldr $t3,[sp,#`$Xoff+8*(16-9)`+4]
+ adds $Tlo,$Tlo,$t0
+ adc $Thi,$Thi,$t1
+
+ ldr $t0,[sp,#`$Xoff+8*16`+0]
+ ldr $t1,[sp,#`$Xoff+8*16`+4]
+ adds $Tlo,$Tlo,$t2
+ adc $Thi,$Thi,$t3
+ adds $Tlo,$Tlo,$t0
+ adc $Thi,$Thi,$t1
+ str $Tlo,[sp,#$Xoff+0]
+ str $Thi,[sp,#$Xoff+4]
+___
+ &BODY_00_15(0x17);
+$code.=<<___;
+ tst $Ktbl,#1
+ beq .L16_79
+ bic $Ktbl,$Ktbl,#1
+
+ ldr $Tlo,[sp,#$Boff+0]
+ ldr $Thi,[sp,#$Boff+4]
+ ldr $t0, [$ctx,#$Aoff+$lo]
+ ldr $t1, [$ctx,#$Aoff+$hi]
+ ldr $t2, [$ctx,#$Boff+$lo]
+ ldr $t3, [$ctx,#$Boff+$hi]
+ adds $t0,$Alo,$t0
+ adc $t1,$Ahi,$t1
+ adds $t2,$Tlo,$t2
+ adc $t3,$Thi,$t3
+ str $t0, [$ctx,#$Aoff+$lo]
+ str $t1, [$ctx,#$Aoff+$hi]
+ str $t2, [$ctx,#$Boff+$lo]
+ str $t3, [$ctx,#$Boff+$hi]
+
+ ldr $Alo,[sp,#$Coff+0]
+ ldr $Ahi,[sp,#$Coff+4]
+ ldr $Tlo,[sp,#$Doff+0]
+ ldr $Thi,[sp,#$Doff+4]
+ ldr $t0, [$ctx,#$Coff+$lo]
+ ldr $t1, [$ctx,#$Coff+$hi]
+ ldr $t2, [$ctx,#$Doff+$lo]
+ ldr $t3, [$ctx,#$Doff+$hi]
+ adds $t0,$Alo,$t0
+ adc $t1,$Ahi,$t1
+ adds $t2,$Tlo,$t2
+ adc $t3,$Thi,$t3
+ str $t0, [$ctx,#$Coff+$lo]
+ str $t1, [$ctx,#$Coff+$hi]
+ str $t2, [$ctx,#$Doff+$lo]
+ str $t3, [$ctx,#$Doff+$hi]
+
+ ldr $Tlo,[sp,#$Foff+0]
+ ldr $Thi,[sp,#$Foff+4]
+ ldr $t0, [$ctx,#$Eoff+$lo]
+ ldr $t1, [$ctx,#$Eoff+$hi]
+ ldr $t2, [$ctx,#$Foff+$lo]
+ ldr $t3, [$ctx,#$Foff+$hi]
+ adds $Elo,$Elo,$t0
+ adc $Ehi,$Ehi,$t1
+ adds $t2,$Tlo,$t2
+ adc $t3,$Thi,$t3
+ str $Elo,[$ctx,#$Eoff+$lo]
+ str $Ehi,[$ctx,#$Eoff+$hi]
+ str $t2, [$ctx,#$Foff+$lo]
+ str $t3, [$ctx,#$Foff+$hi]
+
+ ldr $Alo,[sp,#$Goff+0]
+ ldr $Ahi,[sp,#$Goff+4]
+ ldr $Tlo,[sp,#$Hoff+0]
+ ldr $Thi,[sp,#$Hoff+4]
+ ldr $t0, [$ctx,#$Goff+$lo]
+ ldr $t1, [$ctx,#$Goff+$hi]
+ ldr $t2, [$ctx,#$Hoff+$lo]
+ ldr $t3, [$ctx,#$Hoff+$hi]
+ adds $t0,$Alo,$t0
+ adc $t1,$Ahi,$t1
+ adds $t2,$Tlo,$t2
+ adc $t3,$Thi,$t3
+ str $t0, [$ctx,#$Goff+$lo]
+ str $t1, [$ctx,#$Goff+$hi]
+ str $t2, [$ctx,#$Hoff+$lo]
+ str $t3, [$ctx,#$Hoff+$hi]
+
+ add sp,sp,#640
+ sub $Ktbl,$Ktbl,#640
+
+ teq $inp,$len
+ bne .Loop
+
+ add sp,sp,#8*9 @ destroy frame
+ ldmia sp!,{r4-r12,lr}
+ tst lr,#1
+ moveq pc,lr @ be binary compatible with V4, yet
+ bx lr @ interoperable with Thumb ISA:-)
+.size sha512_block_data_order,.-sha512_block_data_order
+.asciz "SHA512 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>"
+___
+
+$code =~ s/\`([^\`]*)\`/eval $1/gem;
+print $code;
projects / openssl.git / commitdiff