diff options
Diffstat (limited to 'openssl/crypto/sha/asm/sha1-ppc.pl')
| -rw-r--r-- | openssl/crypto/sha/asm/sha1-ppc.pl | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/openssl/crypto/sha/asm/sha1-ppc.pl b/openssl/crypto/sha/asm/sha1-ppc.pl new file mode 100644 index 000000000..dcd0fcdfc --- /dev/null +++ b/openssl/crypto/sha/asm/sha1-ppc.pl @@ -0,0 +1,319 @@ +#!/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/. +# ==================================================================== + +# I let hardware handle unaligned input(*), except on page boundaries +# (see below for details). Otherwise straightforward implementation +# with X vector in register bank. The module is big-endian [which is +# not big deal as there're no little-endian targets left around]. +# +# (*) this means that this module is inappropriate for PPC403? Does +# anybody know if pre-POWER3 can sustain unaligned load? + +# -m64 -m32 +# ---------------------------------- +# PPC970,gcc-4.0.0 +76% +59% +# Power6,xlc-7 +68% +33% + +$flavour = shift; + +if ($flavour =~ /64/) { + $SIZE_T =8; + $UCMP ="cmpld"; + $STU ="stdu"; + $POP ="ld"; + $PUSH ="std"; +} elsif ($flavour =~ /32/) { + $SIZE_T =4; + $UCMP ="cmplw"; + $STU ="stwu"; + $POP ="lwz"; + $PUSH ="stw"; +} else { die "nonsense $flavour"; } + +$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; +( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or +( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or +die "can't locate ppc-xlate.pl"; + +open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!"; + +$FRAME=24*$SIZE_T; + +$K ="r0"; +$sp ="r1"; +$toc="r2"; +$ctx="r3"; +$inp="r4"; +$num="r5"; +$t0 ="r15"; +$t1 ="r6"; + +$A ="r7"; +$B ="r8"; +$C ="r9"; +$D ="r10"; +$E ="r11"; +$T ="r12"; + +@V=($A,$B,$C,$D,$E,$T); +@X=("r16","r17","r18","r19","r20","r21","r22","r23", + "r24","r25","r26","r27","r28","r29","r30","r31"); + +sub BODY_00_19 { +my ($i,$a,$b,$c,$d,$e,$f)=@_; +my $j=$i+1; +$code.=<<___ if ($i==0); + lwz @X[$i],`$i*4`($inp) +___ +$code.=<<___ if ($i<15); + lwz @X[$j],`$j*4`($inp) + add $f,$K,$e + rotlwi $e,$a,5 + add $f,$f,@X[$i] + and $t0,$c,$b + add $f,$f,$e + andc $t1,$d,$b + rotlwi $b,$b,30 + or $t0,$t0,$t1 + add $f,$f,$t0 +___ +$code.=<<___ if ($i>=15); + add $f,$K,$e + rotlwi $e,$a,5 + xor @X[$j%16],@X[$j%16],@X[($j+2)%16] + add $f,$f,@X[$i%16] + and $t0,$c,$b + xor @X[$j%16],@X[$j%16],@X[($j+8)%16] + add $f,$f,$e + andc $t1,$d,$b + rotlwi $b,$b,30 + or $t0,$t0,$t1 + xor @X[$j%16],@X[$j%16],@X[($j+13)%16] + add $f,$f,$t0 + rotlwi @X[$j%16],@X[$j%16],1 +___ +} + +sub BODY_20_39 { +my ($i,$a,$b,$c,$d,$e,$f)=@_; +my $j=$i+1; +$code.=<<___ if ($i<79); + add $f,$K,$e + rotlwi $e,$a,5 + xor @X[$j%16],@X[$j%16],@X[($j+2)%16] + add $f,$f,@X[$i%16] + xor $t0,$b,$c + xor @X[$j%16],@X[$j%16],@X[($j+8)%16] + add $f,$f,$e + rotlwi $b,$b,30 + xor $t0,$t0,$d + xor @X[$j%16],@X[$j%16],@X[($j+13)%16] + add $f,$f,$t0 + rotlwi @X[$j%16],@X[$j%16],1 +___ +$code.=<<___ if ($i==79); + add $f,$K,$e + rotlwi $e,$a,5 + lwz r16,0($ctx) + add $f,$f,@X[$i%16] + xor $t0,$b,$c + lwz r17,4($ctx) + add $f,$f,$e + rotlwi $b,$b,30 + lwz r18,8($ctx) + xor $t0,$t0,$d + lwz r19,12($ctx) + add $f,$f,$t0 + lwz r20,16($ctx) +___ +} + +sub BODY_40_59 { +my ($i,$a,$b,$c,$d,$e,$f)=@_; +my $j=$i+1; +$code.=<<___; + add $f,$K,$e + rotlwi $e,$a,5 + xor @X[$j%16],@X[$j%16],@X[($j+2)%16] + add $f,$f,@X[$i%16] + and $t0,$b,$c + xor @X[$j%16],@X[$j%16],@X[($j+8)%16] + add $f,$f,$e + or $t1,$b,$c + rotlwi $b,$b,30 + xor @X[$j%16],@X[$j%16],@X[($j+13)%16] + and $t1,$t1,$d + or $t0,$t0,$t1 + rotlwi @X[$j%16],@X[$j%16],1 + add $f,$f,$t0 +___ +} + +$code=<<___; +.machine "any" +.text + +.globl .sha1_block_data_order +.align 4 +.sha1_block_data_order: + mflr r0 + $STU $sp,`-($FRAME+64)`($sp) + $PUSH r0,`$FRAME-$SIZE_T*18`($sp) + $PUSH r15,`$FRAME-$SIZE_T*17`($sp) + $PUSH r16,`$FRAME-$SIZE_T*16`($sp) + $PUSH r17,`$FRAME-$SIZE_T*15`($sp) + $PUSH r18,`$FRAME-$SIZE_T*14`($sp) + $PUSH r19,`$FRAME-$SIZE_T*13`($sp) + $PUSH r20,`$FRAME-$SIZE_T*12`($sp) + $PUSH r21,`$FRAME-$SIZE_T*11`($sp) + $PUSH r22,`$FRAME-$SIZE_T*10`($sp) + $PUSH r23,`$FRAME-$SIZE_T*9`($sp) + $PUSH r24,`$FRAME-$SIZE_T*8`($sp) + $PUSH r25,`$FRAME-$SIZE_T*7`($sp) + $PUSH r26,`$FRAME-$SIZE_T*6`($sp) + $PUSH r27,`$FRAME-$SIZE_T*5`($sp) + $PUSH r28,`$FRAME-$SIZE_T*4`($sp) + $PUSH r29,`$FRAME-$SIZE_T*3`($sp) + $PUSH r30,`$FRAME-$SIZE_T*2`($sp) + $PUSH r31,`$FRAME-$SIZE_T*1`($sp) + lwz $A,0($ctx) + lwz $B,4($ctx) + lwz $C,8($ctx) + lwz $D,12($ctx) + lwz $E,16($ctx) + andi. r0,$inp,3 + bne Lunaligned +Laligned: + mtctr $num + bl Lsha1_block_private +Ldone: + $POP r0,`$FRAME-$SIZE_T*18`($sp) + $POP r15,`$FRAME-$SIZE_T*17`($sp) + $POP r16,`$FRAME-$SIZE_T*16`($sp) + $POP r17,`$FRAME-$SIZE_T*15`($sp) + $POP r18,`$FRAME-$SIZE_T*14`($sp) + $POP r19,`$FRAME-$SIZE_T*13`($sp) + $POP r20,`$FRAME-$SIZE_T*12`($sp) + $POP r21,`$FRAME-$SIZE_T*11`($sp) + $POP r22,`$FRAME-$SIZE_T*10`($sp) + $POP r23,`$FRAME-$SIZE_T*9`($sp) + $POP r24,`$FRAME-$SIZE_T*8`($sp) + $POP r25,`$FRAME-$SIZE_T*7`($sp) + $POP r26,`$FRAME-$SIZE_T*6`($sp) + $POP r27,`$FRAME-$SIZE_T*5`($sp) + $POP r28,`$FRAME-$SIZE_T*4`($sp) + $POP r29,`$FRAME-$SIZE_T*3`($sp) + $POP r30,`$FRAME-$SIZE_T*2`($sp) + $POP r31,`$FRAME-$SIZE_T*1`($sp) + mtlr r0 + addi $sp,$sp,`$FRAME+64` + blr +___ + +# PowerPC specification allows an implementation to be ill-behaved +# upon unaligned access which crosses page boundary. "Better safe +# than sorry" principle makes me treat it specially. But I don't +# look for particular offending word, but rather for 64-byte input +# block which crosses the boundary. Once found that block is aligned +# and hashed separately... +$code.=<<___; +.align 4 +Lunaligned: + subfic $t1,$inp,4096 + andi. $t1,$t1,4095 ; distance to closest page boundary + srwi. $t1,$t1,6 ; t1/=64 + beq Lcross_page + $UCMP $num,$t1 + ble- Laligned ; didn't cross the page boundary + mtctr $t1 + subfc $num,$t1,$num + bl Lsha1_block_private +Lcross_page: + li $t1,16 + mtctr $t1 + addi r20,$sp,$FRAME ; spot below the frame +Lmemcpy: + lbz r16,0($inp) + lbz r17,1($inp) + lbz r18,2($inp) + lbz r19,3($inp) + addi $inp,$inp,4 + stb r16,0(r20) + stb r17,1(r20) + stb r18,2(r20) + stb r19,3(r20) + addi r20,r20,4 + bdnz Lmemcpy + + $PUSH $inp,`$FRAME-$SIZE_T*19`($sp) + li $t1,1 + addi $inp,$sp,$FRAME + mtctr $t1 + bl Lsha1_block_private + $POP $inp,`$FRAME-$SIZE_T*19`($sp) + addic. $num,$num,-1 + bne- Lunaligned + b Ldone +___ + +# This is private block function, which uses tailored calling +# interface, namely upon entry SHA_CTX is pre-loaded to given +# registers and counter register contains amount of chunks to +# digest... +$code.=<<___; +.align 4 +Lsha1_block_private: +___ +$code.=<<___; # load K_00_19 + lis $K,0x5a82 + ori $K,$K,0x7999 +___ +for($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; # load K_20_39 + lis $K,0x6ed9 + ori $K,$K,0xeba1 +___ +for(;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; # load K_40_59 + lis $K,0x8f1b + ori $K,$K,0xbcdc +___ +for(;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; # load K_60_79 + lis $K,0xca62 + ori $K,$K,0xc1d6 +___ +for(;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; + add r16,r16,$E + add r17,r17,$T + add r18,r18,$A + add r19,r19,$B + add r20,r20,$C + stw r16,0($ctx) + mr $A,r16 + stw r17,4($ctx) + mr $B,r17 + stw r18,8($ctx) + mr $C,r18 + stw r19,12($ctx) + mr $D,r19 + stw r20,16($ctx) + mr $E,r20 + addi $inp,$inp,`16*4` + bdnz- Lsha1_block_private + blr +___ +$code.=<<___; +.asciz "SHA1 block transform for PPC, CRYPTOGAMS by <appro\@fy.chalmers.se>" +___ + +$code =~ s/\`([^\`]*)\`/eval $1/gem; +print $code; +close STDOUT; |