462 lines
13 KiB
Raku
Executable file
462 lines
13 KiB
Raku
Executable file
#!/usr/bin/env perl
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# ====================================================================
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# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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# I let hardware handle unaligned input, except on page boundaries
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# (see below for details). Otherwise straightforward implementation
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# with X vector in register bank. The module is big-endian [which is
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# not big deal as there're no little-endian targets left around].
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# sha256 | sha512
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# -m64 -m32 | -m64 -m32
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# --------------------------------------+-----------------------
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# PPC970,gcc-4.0.0 +50% +38% | +40% +410%(*)
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# Power6,xlc-7 +150% +90% | +100% +430%(*)
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#
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# (*) 64-bit code in 32-bit application context, which actually is
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# on TODO list. It should be noted that for safe deployment in
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# 32-bit *mutli-threaded* context asyncronous signals should be
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# blocked upon entry to SHA512 block routine. This is because
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# 32-bit signaling procedure invalidates upper halves of GPRs.
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# Context switch procedure preserves them, but not signaling:-(
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# Second version is true multi-thread safe. Trouble with the original
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# version was that it was using thread local storage pointer register.
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# Well, it scrupulously preserved it, but the problem would arise the
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# moment asynchronous signal was delivered and signal handler would
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# dereference the TLS pointer. While it's never the case in openssl
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# application or test suite, we have to respect this scenario and not
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# use TLS pointer register. Alternative would be to require caller to
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# block signals prior calling this routine. For the record, in 32-bit
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# context R2 serves as TLS pointer, while in 64-bit context - R13.
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$flavour=shift;
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$output =shift;
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if ($flavour =~ /64/) {
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$SIZE_T=8;
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$LRSAVE=2*$SIZE_T;
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$STU="stdu";
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$UCMP="cmpld";
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$SHL="sldi";
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$POP="ld";
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$PUSH="std";
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} elsif ($flavour =~ /32/) {
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$SIZE_T=4;
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$LRSAVE=$SIZE_T;
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$STU="stwu";
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$UCMP="cmplw";
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$SHL="slwi";
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$POP="lwz";
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$PUSH="stw";
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} else { die "nonsense $flavour"; }
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
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( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
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die "can't locate ppc-xlate.pl";
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open STDOUT,"| $^X $xlate $flavour $output" || die "can't call $xlate: $!";
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if ($output =~ /512/) {
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$func="sha512_block_data_order";
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$SZ=8;
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@Sigma0=(28,34,39);
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@Sigma1=(14,18,41);
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@sigma0=(1, 8, 7);
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@sigma1=(19,61, 6);
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$rounds=80;
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$LD="ld";
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$ST="std";
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$ROR="rotrdi";
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$SHR="srdi";
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} else {
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$func="sha256_block_data_order";
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$SZ=4;
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@Sigma0=( 2,13,22);
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@Sigma1=( 6,11,25);
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@sigma0=( 7,18, 3);
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@sigma1=(17,19,10);
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$rounds=64;
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$LD="lwz";
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$ST="stw";
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$ROR="rotrwi";
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$SHR="srwi";
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}
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$FRAME=32*$SIZE_T+16*$SZ;
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$LOCALS=6*$SIZE_T;
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$sp ="r1";
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$toc="r2";
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$ctx="r3"; # zapped by $a0
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$inp="r4"; # zapped by $a1
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$num="r5"; # zapped by $t0
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$T ="r0";
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$a0 ="r3";
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$a1 ="r4";
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$t0 ="r5";
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$t1 ="r6";
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$Tbl="r7";
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$A ="r8";
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$B ="r9";
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$C ="r10";
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$D ="r11";
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$E ="r12";
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$F =$t1; $t1 = "r0"; # stay away from "r13";
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$G ="r14";
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$H ="r15";
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@V=($A,$B,$C,$D,$E,$F,$G,$H);
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@X=("r16","r17","r18","r19","r20","r21","r22","r23",
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"r24","r25","r26","r27","r28","r29","r30","r31");
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$inp="r31"; # reassigned $inp! aliases with @X[15]
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sub ROUND_00_15 {
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my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
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$code.=<<___;
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$ROR $a0,$e,$Sigma1[0]
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$ROR $a1,$e,$Sigma1[1]
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and $t0,$f,$e
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xor $a0,$a0,$a1
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add $h,$h,$t1
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andc $t1,$g,$e
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$ROR $a1,$a1,`$Sigma1[2]-$Sigma1[1]`
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or $t0,$t0,$t1 ; Ch(e,f,g)
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add $h,$h,@X[$i%16]
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xor $a0,$a0,$a1 ; Sigma1(e)
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add $h,$h,$t0
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add $h,$h,$a0
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$ROR $a0,$a,$Sigma0[0]
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$ROR $a1,$a,$Sigma0[1]
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and $t0,$a,$b
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and $t1,$a,$c
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xor $a0,$a0,$a1
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$ROR $a1,$a1,`$Sigma0[2]-$Sigma0[1]`
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xor $t0,$t0,$t1
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and $t1,$b,$c
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xor $a0,$a0,$a1 ; Sigma0(a)
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add $d,$d,$h
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xor $t0,$t0,$t1 ; Maj(a,b,c)
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___
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$code.=<<___ if ($i<15);
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$LD $t1,`($i+1)*$SZ`($Tbl)
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___
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$code.=<<___;
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add $h,$h,$a0
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add $h,$h,$t0
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___
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}
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sub ROUND_16_xx {
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my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
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$i-=16;
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$code.=<<___;
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$ROR $a0,@X[($i+1)%16],$sigma0[0]
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$ROR $a1,@X[($i+1)%16],$sigma0[1]
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$ROR $t0,@X[($i+14)%16],$sigma1[0]
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$ROR $t1,@X[($i+14)%16],$sigma1[1]
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xor $a0,$a0,$a1
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$SHR $a1,@X[($i+1)%16],$sigma0[2]
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xor $t0,$t0,$t1
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$SHR $t1,@X[($i+14)%16],$sigma1[2]
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add @X[$i],@X[$i],@X[($i+9)%16]
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xor $a0,$a0,$a1 ; sigma0(X[(i+1)&0x0f])
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xor $t0,$t0,$t1 ; sigma1(X[(i+14)&0x0f])
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$LD $t1,`$i*$SZ`($Tbl)
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add @X[$i],@X[$i],$a0
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add @X[$i],@X[$i],$t0
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___
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&ROUND_00_15($i+16,$a,$b,$c,$d,$e,$f,$g,$h);
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}
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$code=<<___;
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.machine "any"
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.text
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.globl $func
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.align 6
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$func:
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$STU $sp,-$FRAME($sp)
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mflr r0
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$SHL $num,$num,`log(16*$SZ)/log(2)`
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$PUSH $ctx,`$FRAME-$SIZE_T*22`($sp)
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$PUSH r14,`$FRAME-$SIZE_T*18`($sp)
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$PUSH r15,`$FRAME-$SIZE_T*17`($sp)
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$PUSH r16,`$FRAME-$SIZE_T*16`($sp)
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$PUSH r17,`$FRAME-$SIZE_T*15`($sp)
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$PUSH r18,`$FRAME-$SIZE_T*14`($sp)
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$PUSH r19,`$FRAME-$SIZE_T*13`($sp)
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$PUSH r20,`$FRAME-$SIZE_T*12`($sp)
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$PUSH r21,`$FRAME-$SIZE_T*11`($sp)
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$PUSH r22,`$FRAME-$SIZE_T*10`($sp)
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$PUSH r23,`$FRAME-$SIZE_T*9`($sp)
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$PUSH r24,`$FRAME-$SIZE_T*8`($sp)
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$PUSH r25,`$FRAME-$SIZE_T*7`($sp)
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$PUSH r26,`$FRAME-$SIZE_T*6`($sp)
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$PUSH r27,`$FRAME-$SIZE_T*5`($sp)
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$PUSH r28,`$FRAME-$SIZE_T*4`($sp)
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$PUSH r29,`$FRAME-$SIZE_T*3`($sp)
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$PUSH r30,`$FRAME-$SIZE_T*2`($sp)
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$PUSH r31,`$FRAME-$SIZE_T*1`($sp)
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$PUSH r0,`$FRAME+$LRSAVE`($sp)
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$LD $A,`0*$SZ`($ctx)
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mr $inp,r4 ; incarnate $inp
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$LD $B,`1*$SZ`($ctx)
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$LD $C,`2*$SZ`($ctx)
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$LD $D,`3*$SZ`($ctx)
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$LD $E,`4*$SZ`($ctx)
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$LD $F,`5*$SZ`($ctx)
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$LD $G,`6*$SZ`($ctx)
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$LD $H,`7*$SZ`($ctx)
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bl LPICmeup
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LPICedup:
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andi. r0,$inp,3
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bne Lunaligned
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Laligned:
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add $num,$inp,$num
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$PUSH $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
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$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
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bl Lsha2_block_private
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b Ldone
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; PowerPC specification allows an implementation to be ill-behaved
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; upon unaligned access which crosses page boundary. "Better safe
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; than sorry" principle makes me treat it specially. But I don't
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; look for particular offending word, but rather for the input
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; block which crosses the boundary. Once found that block is aligned
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; and hashed separately...
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.align 4
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Lunaligned:
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subfic $t1,$inp,4096
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andi. $t1,$t1,`4096-16*$SZ` ; distance to closest page boundary
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beq Lcross_page
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$UCMP $num,$t1
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ble- Laligned ; didn't cross the page boundary
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subfc $num,$t1,$num
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add $t1,$inp,$t1
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$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real remaining num
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$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; intermediate end pointer
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$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
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bl Lsha2_block_private
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; $inp equals to the intermediate end pointer here
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$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real remaining num
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Lcross_page:
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li $t1,`16*$SZ/4`
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mtctr $t1
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addi r20,$sp,$LOCALS ; aligned spot below the frame
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Lmemcpy:
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lbz r16,0($inp)
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lbz r17,1($inp)
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lbz r18,2($inp)
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lbz r19,3($inp)
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addi $inp,$inp,4
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stb r16,0(r20)
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stb r17,1(r20)
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stb r18,2(r20)
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stb r19,3(r20)
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addi r20,r20,4
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bdnz Lmemcpy
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$PUSH $inp,`$FRAME-$SIZE_T*26`($sp) ; save real inp
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addi $t1,$sp,`$LOCALS+16*$SZ` ; fictitious end pointer
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addi $inp,$sp,$LOCALS ; fictitious inp pointer
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$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real num
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$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; end pointer
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$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
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bl Lsha2_block_private
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$POP $inp,`$FRAME-$SIZE_T*26`($sp) ; restore real inp
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$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real num
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addic. $num,$num,`-16*$SZ` ; num--
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bne- Lunaligned
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Ldone:
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$POP r0,`$FRAME+$LRSAVE`($sp)
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$POP r14,`$FRAME-$SIZE_T*18`($sp)
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$POP r15,`$FRAME-$SIZE_T*17`($sp)
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$POP r16,`$FRAME-$SIZE_T*16`($sp)
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$POP r17,`$FRAME-$SIZE_T*15`($sp)
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$POP r18,`$FRAME-$SIZE_T*14`($sp)
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$POP r19,`$FRAME-$SIZE_T*13`($sp)
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$POP r20,`$FRAME-$SIZE_T*12`($sp)
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$POP r21,`$FRAME-$SIZE_T*11`($sp)
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$POP r22,`$FRAME-$SIZE_T*10`($sp)
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$POP r23,`$FRAME-$SIZE_T*9`($sp)
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$POP r24,`$FRAME-$SIZE_T*8`($sp)
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$POP r25,`$FRAME-$SIZE_T*7`($sp)
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$POP r26,`$FRAME-$SIZE_T*6`($sp)
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$POP r27,`$FRAME-$SIZE_T*5`($sp)
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$POP r28,`$FRAME-$SIZE_T*4`($sp)
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$POP r29,`$FRAME-$SIZE_T*3`($sp)
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$POP r30,`$FRAME-$SIZE_T*2`($sp)
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$POP r31,`$FRAME-$SIZE_T*1`($sp)
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mtlr r0
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addi $sp,$sp,$FRAME
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blr
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.long 0
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.byte 0,12,4,1,0x80,18,3,0
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.long 0
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.align 4
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Lsha2_block_private:
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$LD $t1,0($Tbl)
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___
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for($i=0;$i<16;$i++) {
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$code.=<<___ if ($SZ==4);
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lwz @X[$i],`$i*$SZ`($inp)
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___
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# 64-bit loads are split to 2x32-bit ones, as CPU can't handle
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# unaligned 64-bit loads, only 32-bit ones...
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$code.=<<___ if ($SZ==8);
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lwz $t0,`$i*$SZ`($inp)
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lwz @X[$i],`$i*$SZ+4`($inp)
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insrdi @X[$i],$t0,32,0
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___
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&ROUND_00_15($i,@V);
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unshift(@V,pop(@V));
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}
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$code.=<<___;
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li $t0,`$rounds/16-1`
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mtctr $t0
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.align 4
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Lrounds:
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addi $Tbl,$Tbl,`16*$SZ`
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___
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for(;$i<32;$i++) {
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&ROUND_16_xx($i,@V);
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unshift(@V,pop(@V));
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}
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$code.=<<___;
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bdnz- Lrounds
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$POP $ctx,`$FRAME-$SIZE_T*22`($sp)
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$POP $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
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$POP $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
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subi $Tbl,$Tbl,`($rounds-16)*$SZ` ; rewind Tbl
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$LD r16,`0*$SZ`($ctx)
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$LD r17,`1*$SZ`($ctx)
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$LD r18,`2*$SZ`($ctx)
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$LD r19,`3*$SZ`($ctx)
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$LD r20,`4*$SZ`($ctx)
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$LD r21,`5*$SZ`($ctx)
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$LD r22,`6*$SZ`($ctx)
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addi $inp,$inp,`16*$SZ` ; advance inp
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$LD r23,`7*$SZ`($ctx)
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add $A,$A,r16
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add $B,$B,r17
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$PUSH $inp,`$FRAME-$SIZE_T*23`($sp)
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add $C,$C,r18
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$ST $A,`0*$SZ`($ctx)
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add $D,$D,r19
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$ST $B,`1*$SZ`($ctx)
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add $E,$E,r20
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$ST $C,`2*$SZ`($ctx)
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add $F,$F,r21
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$ST $D,`3*$SZ`($ctx)
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add $G,$G,r22
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$ST $E,`4*$SZ`($ctx)
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add $H,$H,r23
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$ST $F,`5*$SZ`($ctx)
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$ST $G,`6*$SZ`($ctx)
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$UCMP $inp,$num
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$ST $H,`7*$SZ`($ctx)
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bne Lsha2_block_private
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blr
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.long 0
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.byte 0,12,0x14,0,0,0,0,0
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___
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# Ugly hack here, because PPC assembler syntax seem to vary too
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# much from platforms to platform...
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$code.=<<___;
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.align 6
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LPICmeup:
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mflr r0
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bcl 20,31,\$+4
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mflr $Tbl ; vvvvvv "distance" between . and 1st data entry
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addi $Tbl,$Tbl,`64-8`
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mtlr r0
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blr
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.long 0
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.byte 0,12,0x14,0,0,0,0,0
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.space `64-9*4`
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___
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$code.=<<___ if ($SZ==8);
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.long 0x428a2f98,0xd728ae22,0x71374491,0x23ef65cd
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.long 0xb5c0fbcf,0xec4d3b2f,0xe9b5dba5,0x8189dbbc
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.long 0x3956c25b,0xf348b538,0x59f111f1,0xb605d019
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.long 0x923f82a4,0xaf194f9b,0xab1c5ed5,0xda6d8118
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.long 0xd807aa98,0xa3030242,0x12835b01,0x45706fbe
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.long 0x243185be,0x4ee4b28c,0x550c7dc3,0xd5ffb4e2
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.long 0x72be5d74,0xf27b896f,0x80deb1fe,0x3b1696b1
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.long 0x9bdc06a7,0x25c71235,0xc19bf174,0xcf692694
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.long 0xe49b69c1,0x9ef14ad2,0xefbe4786,0x384f25e3
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.long 0x0fc19dc6,0x8b8cd5b5,0x240ca1cc,0x77ac9c65
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.long 0x2de92c6f,0x592b0275,0x4a7484aa,0x6ea6e483
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.long 0x5cb0a9dc,0xbd41fbd4,0x76f988da,0x831153b5
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.long 0x983e5152,0xee66dfab,0xa831c66d,0x2db43210
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.long 0xb00327c8,0x98fb213f,0xbf597fc7,0xbeef0ee4
|
|
.long 0xc6e00bf3,0x3da88fc2,0xd5a79147,0x930aa725
|
|
.long 0x06ca6351,0xe003826f,0x14292967,0x0a0e6e70
|
|
.long 0x27b70a85,0x46d22ffc,0x2e1b2138,0x5c26c926
|
|
.long 0x4d2c6dfc,0x5ac42aed,0x53380d13,0x9d95b3df
|
|
.long 0x650a7354,0x8baf63de,0x766a0abb,0x3c77b2a8
|
|
.long 0x81c2c92e,0x47edaee6,0x92722c85,0x1482353b
|
|
.long 0xa2bfe8a1,0x4cf10364,0xa81a664b,0xbc423001
|
|
.long 0xc24b8b70,0xd0f89791,0xc76c51a3,0x0654be30
|
|
.long 0xd192e819,0xd6ef5218,0xd6990624,0x5565a910
|
|
.long 0xf40e3585,0x5771202a,0x106aa070,0x32bbd1b8
|
|
.long 0x19a4c116,0xb8d2d0c8,0x1e376c08,0x5141ab53
|
|
.long 0x2748774c,0xdf8eeb99,0x34b0bcb5,0xe19b48a8
|
|
.long 0x391c0cb3,0xc5c95a63,0x4ed8aa4a,0xe3418acb
|
|
.long 0x5b9cca4f,0x7763e373,0x682e6ff3,0xd6b2b8a3
|
|
.long 0x748f82ee,0x5defb2fc,0x78a5636f,0x43172f60
|
|
.long 0x84c87814,0xa1f0ab72,0x8cc70208,0x1a6439ec
|
|
.long 0x90befffa,0x23631e28,0xa4506ceb,0xde82bde9
|
|
.long 0xbef9a3f7,0xb2c67915,0xc67178f2,0xe372532b
|
|
.long 0xca273ece,0xea26619c,0xd186b8c7,0x21c0c207
|
|
.long 0xeada7dd6,0xcde0eb1e,0xf57d4f7f,0xee6ed178
|
|
.long 0x06f067aa,0x72176fba,0x0a637dc5,0xa2c898a6
|
|
.long 0x113f9804,0xbef90dae,0x1b710b35,0x131c471b
|
|
.long 0x28db77f5,0x23047d84,0x32caab7b,0x40c72493
|
|
.long 0x3c9ebe0a,0x15c9bebc,0x431d67c4,0x9c100d4c
|
|
.long 0x4cc5d4be,0xcb3e42b6,0x597f299c,0xfc657e2a
|
|
.long 0x5fcb6fab,0x3ad6faec,0x6c44198c,0x4a475817
|
|
___
|
|
$code.=<<___ if ($SZ==4);
|
|
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
|
|
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
|
|
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
|
|
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
|
|
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
|
|
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
|
|
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
|
|
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
|
|
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
|
|
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
|
|
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
|
|
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
|
|
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
|
|
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
|
|
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
|
|
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
|
|
___
|
|
|
|
$code =~ s/\`([^\`]*)\`/eval $1/gem;
|
|
print $code;
|
|
close STDOUT;
|