diff options
Diffstat (limited to 'crypto/sha/asm/sha256-armv4.pl')
| -rw-r--r-- | crypto/sha/asm/sha256-armv4.pl | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/crypto/sha/asm/sha256-armv4.pl b/crypto/sha/asm/sha256-armv4.pl new file mode 100644 index 000000000..853ca31e4 --- /dev/null +++ b/crypto/sha/asm/sha256-armv4.pl @@ -0,0 +1,180 @@ +#!/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. + +$output=shift; +open STDOUT,">$output"; + +$ctx="r0"; $t0="r0"; +$inp="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); + 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 + `"str $inp,[sp,#17*4]" if ($i==15)` +___ +$code.=<<___; + ldr $t2,[$Ktbl],#4 @ *K256++ + str $T1,[sp,#`$i%16`*4] + mov $t0,$e,ror#$Sigma1[0] + eor $t0,$t0,$e,ror#$Sigma1[1] + eor $t0,$t0,$e,ror#$Sigma1[2] @ Sigma1(e) + add $T1,$T1,$t0 + eor $t1,$f,$g + and $t1,$t1,$e + eor $t1,$t1,$g @ Ch(e,f,g) + add $T1,$T1,$t1 + add $T1,$T1,$h + add $T1,$T1,$t2 + mov $h,$a,ror#$Sigma0[0] + eor $h,$h,$a,ror#$Sigma0[1] + eor $h,$h,$a,ror#$Sigma0[2] @ Sigma0(a) + orr $t0,$a,$b + and $t0,$t0,$c + and $t1,$a,$b + orr $t0,$t0,$t1 @ Maj(a,b,c) + add $h,$h,$t0 + add $d,$d,$T1 + add $h,$h,$T1 +___ +} + +sub BODY_16_XX { +my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; + +$code.=<<___; + ldr $t1,[sp,#`($i+1)%16`*4] @ $i + ldr $t2,[sp,#`($i+14)%16`*4] + ldr $T1,[sp,#`($i+0)%16`*4] + ldr $inp,[sp,#`($i+9)%16`*4] + mov $t0,$t1,ror#$sigma0[0] + eor $t0,$t0,$t1,ror#$sigma0[1] + eor $t0,$t0,$t1,lsr#$sigma0[2] @ sigma0(X[i+1]) + mov $t1,$t2,ror#$sigma1[0] + eor $t1,$t1,$t2,ror#$sigma1[1] + eor $t1,$t1,$t2,lsr#$sigma1[2] @ sigma1(X[i+14]) + add $T1,$T1,$t0 + add $T1,$T1,$t1 + add $T1,$T1,$inp +___ + &BODY_00_15(@_); +} + +$code=<<___; +.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-r12,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 + ldmia sp!,{r4-r12,lr} + tst lr,#1 + moveq pc,lr @ be binary compatible with V4, yet + bx lr @ interoperable with Thumb ISA:-) +.size sha256_block_data_order,.-sha256_block_data_order +.asciz "SHA256 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>" +___ + +$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 |