diff options
Diffstat (limited to 'openssl/crypto/bn/asm/sparcv9-mont.pl')
| -rw-r--r-- | openssl/crypto/bn/asm/sparcv9-mont.pl | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/openssl/crypto/bn/asm/sparcv9-mont.pl b/openssl/crypto/bn/asm/sparcv9-mont.pl new file mode 100644 index 00000000..b8fb1e8a --- /dev/null +++ b/openssl/crypto/bn/asm/sparcv9-mont.pl @@ -0,0 +1,606 @@ +#!/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/. +# ==================================================================== + +# December 2005 +# +# Pure SPARCv9/8+ and IALU-only bn_mul_mont implementation. The reasons +# for undertaken effort are multiple. First of all, UltraSPARC is not +# the whole SPARCv9 universe and other VIS-free implementations deserve +# optimized code as much. Secondly, newly introduced UltraSPARC T1, +# a.k.a. Niagara, has shared FPU and concurrent FPU-intensive pathes, +# such as sparcv9a-mont, will simply sink it. Yes, T1 is equipped with +# several integrated RSA/DSA accelerator circuits accessible through +# kernel driver [only(*)], but having decent user-land software +# implementation is important too. Finally, reasons like desire to +# experiment with dedicated squaring procedure. Yes, this module +# implements one, because it was easiest to draft it in SPARCv9 +# instructions... + +# (*) Engine accessing the driver in question is on my TODO list. +# For reference, acceleator is estimated to give 6 to 10 times +# improvement on single-threaded RSA sign. It should be noted +# that 6-10x improvement coefficient does not actually mean +# something extraordinary in terms of absolute [single-threaded] +# performance, as SPARCv9 instruction set is by all means least +# suitable for high performance crypto among other 64 bit +# platforms. 6-10x factor simply places T1 in same performance +# domain as say AMD64 and IA-64. Improvement of RSA verify don't +# appear impressive at all, but it's the sign operation which is +# far more critical/interesting. + +# You might notice that inner loops are modulo-scheduled:-) This has +# essentially negligible impact on UltraSPARC performance, it's +# Fujitsu SPARC64 V users who should notice and hopefully appreciate +# the advantage... Currently this module surpasses sparcv9a-mont.pl +# by ~20% on UltraSPARC-III and later cores, but recall that sparcv9a +# module still have hidden potential [see TODO list there], which is +# estimated to be larger than 20%... + +# int bn_mul_mont( +$rp="%i0"; # BN_ULONG *rp, +$ap="%i1"; # const BN_ULONG *ap, +$bp="%i2"; # const BN_ULONG *bp, +$np="%i3"; # const BN_ULONG *np, +$n0="%i4"; # const BN_ULONG *n0, +$num="%i5"; # int num); + +$bits=32; +for (@ARGV) { $bits=64 if (/\-m64/ || /\-xarch\=v9/); } +if ($bits==64) { $bias=2047; $frame=192; } +else { $bias=0; $frame=128; } + +$car0="%o0"; +$car1="%o1"; +$car2="%o2"; # 1 bit +$acc0="%o3"; +$acc1="%o4"; +$mask="%g1"; # 32 bits, what a waste... +$tmp0="%g4"; +$tmp1="%g5"; + +$i="%l0"; +$j="%l1"; +$mul0="%l2"; +$mul1="%l3"; +$tp="%l4"; +$apj="%l5"; +$npj="%l6"; +$tpj="%l7"; + +$fname="bn_mul_mont_int"; + +$code=<<___; +.section ".text",#alloc,#execinstr + +.global $fname +.align 32 +$fname: + cmp %o5,4 ! 128 bits minimum + bge,pt %icc,.Lenter + sethi %hi(0xffffffff),$mask + retl + clr %o0 +.align 32 +.Lenter: + save %sp,-$frame,%sp + sll $num,2,$num ! num*=4 + or $mask,%lo(0xffffffff),$mask + ld [$n0],$n0 + cmp $ap,$bp + and $num,$mask,$num + ld [$bp],$mul0 ! bp[0] + nop + + add %sp,$bias,%o7 ! real top of stack + ld [$ap],$car0 ! ap[0] ! redundant in squaring context + sub %o7,$num,%o7 + ld [$ap+4],$apj ! ap[1] + and %o7,-1024,%o7 + ld [$np],$car1 ! np[0] + sub %o7,$bias,%sp ! alloca + ld [$np+4],$npj ! np[1] + be,pt `$bits==32?"%icc":"%xcc"`,.Lbn_sqr_mont + mov 12,$j + + mulx $car0,$mul0,$car0 ! ap[0]*bp[0] + mulx $apj,$mul0,$tmp0 !prologue! ap[1]*bp[0] + and $car0,$mask,$acc0 + add %sp,$bias+$frame,$tp + ld [$ap+8],$apj !prologue! + + mulx $n0,$acc0,$mul1 ! "t[0]"*n0 + and $mul1,$mask,$mul1 + + mulx $car1,$mul1,$car1 ! np[0]*"t[0]"*n0 + mulx $npj,$mul1,$acc1 !prologue! np[1]*"t[0]"*n0 + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + ld [$np+8],$npj !prologue! + srlx $car1,32,$car1 + mov $tmp0,$acc0 !prologue! + +.L1st: + mulx $apj,$mul0,$tmp0 + mulx $npj,$mul1,$tmp1 + add $acc0,$car0,$car0 + ld [$ap+$j],$apj ! ap[j] + and $car0,$mask,$acc0 + add $acc1,$car1,$car1 + ld [$np+$j],$npj ! np[j] + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + add $j,4,$j ! j++ + mov $tmp0,$acc0 + st $car1,[$tp] + cmp $j,$num + mov $tmp1,$acc1 + srlx $car1,32,$car1 + bl %icc,.L1st + add $tp,4,$tp ! tp++ +!.L1st + + mulx $apj,$mul0,$tmp0 !epilogue! + mulx $npj,$mul1,$tmp1 + add $acc0,$car0,$car0 + and $car0,$mask,$acc0 + add $acc1,$car1,$car1 + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + st $car1,[$tp] + srlx $car1,32,$car1 + + add $tmp0,$car0,$car0 + and $car0,$mask,$acc0 + add $tmp1,$car1,$car1 + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + st $car1,[$tp+4] + srlx $car1,32,$car1 + + add $car0,$car1,$car1 + st $car1,[$tp+8] + srlx $car1,32,$car2 + + mov 4,$i ! i++ + ld [$bp+4],$mul0 ! bp[1] +.Louter: + add %sp,$bias+$frame,$tp + ld [$ap],$car0 ! ap[0] + ld [$ap+4],$apj ! ap[1] + ld [$np],$car1 ! np[0] + ld [$np+4],$npj ! np[1] + ld [$tp],$tmp1 ! tp[0] + ld [$tp+4],$tpj ! tp[1] + mov 12,$j + + mulx $car0,$mul0,$car0 + mulx $apj,$mul0,$tmp0 !prologue! + add $tmp1,$car0,$car0 + ld [$ap+8],$apj !prologue! + and $car0,$mask,$acc0 + + mulx $n0,$acc0,$mul1 + and $mul1,$mask,$mul1 + + mulx $car1,$mul1,$car1 + mulx $npj,$mul1,$acc1 !prologue! + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + ld [$np+8],$npj !prologue! + srlx $car1,32,$car1 + mov $tmp0,$acc0 !prologue! + +.Linner: + mulx $apj,$mul0,$tmp0 + mulx $npj,$mul1,$tmp1 + add $tpj,$car0,$car0 + ld [$ap+$j],$apj ! ap[j] + add $acc0,$car0,$car0 + add $acc1,$car1,$car1 + ld [$np+$j],$npj ! np[j] + and $car0,$mask,$acc0 + ld [$tp+8],$tpj ! tp[j] + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + add $j,4,$j ! j++ + mov $tmp0,$acc0 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + mov $tmp1,$acc1 + cmp $j,$num + bl %icc,.Linner + add $tp,4,$tp ! tp++ +!.Linner + + mulx $apj,$mul0,$tmp0 !epilogue! + mulx $npj,$mul1,$tmp1 + add $tpj,$car0,$car0 + add $acc0,$car0,$car0 + ld [$tp+8],$tpj ! tp[j] + and $car0,$mask,$acc0 + add $acc1,$car1,$car1 + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + + add $tpj,$car0,$car0 + add $tmp0,$car0,$car0 + and $car0,$mask,$acc0 + add $tmp1,$car1,$car1 + add $acc0,$car1,$car1 + st $car1,[$tp+4] ! tp[j-1] + srlx $car0,32,$car0 + add $i,4,$i ! i++ + srlx $car1,32,$car1 + + add $car0,$car1,$car1 + cmp $i,$num + add $car2,$car1,$car1 + st $car1,[$tp+8] + + srlx $car1,32,$car2 + bl,a %icc,.Louter + ld [$bp+$i],$mul0 ! bp[i] +!.Louter + + add $tp,12,$tp + +.Ltail: + add $np,$num,$np + add $rp,$num,$rp + mov $tp,$ap + sub %g0,$num,%o7 ! k=-num + ba .Lsub + subcc %g0,%g0,%g0 ! clear %icc.c +.align 16 +.Lsub: + ld [$tp+%o7],%o0 + ld [$np+%o7],%o1 + subccc %o0,%o1,%o1 ! tp[j]-np[j] + add $rp,%o7,$i + add %o7,4,%o7 + brnz %o7,.Lsub + st %o1,[$i] + subc $car2,0,$car2 ! handle upmost overflow bit + and $tp,$car2,$ap + andn $rp,$car2,$np + or $ap,$np,$ap + sub %g0,$num,%o7 + +.Lcopy: + ld [$ap+%o7],%o0 ! copy or in-place refresh + st %g0,[$tp+%o7] ! zap tp + st %o0,[$rp+%o7] + add %o7,4,%o7 + brnz %o7,.Lcopy + nop + mov 1,%i0 + ret + restore +___ + +######## +######## .Lbn_sqr_mont gives up to 20% *overall* improvement over +######## code without following dedicated squaring procedure. +######## +$sbit="%i2"; # re-use $bp! + +$code.=<<___; +.align 32 +.Lbn_sqr_mont: + mulx $mul0,$mul0,$car0 ! ap[0]*ap[0] + mulx $apj,$mul0,$tmp0 !prologue! + and $car0,$mask,$acc0 + add %sp,$bias+$frame,$tp + ld [$ap+8],$apj !prologue! + + mulx $n0,$acc0,$mul1 ! "t[0]"*n0 + srlx $car0,32,$car0 + and $mul1,$mask,$mul1 + + mulx $car1,$mul1,$car1 ! np[0]*"t[0]"*n0 + mulx $npj,$mul1,$acc1 !prologue! + and $car0,1,$sbit + ld [$np+8],$npj !prologue! + srlx $car0,1,$car0 + add $acc0,$car1,$car1 + srlx $car1,32,$car1 + mov $tmp0,$acc0 !prologue! + +.Lsqr_1st: + mulx $apj,$mul0,$tmp0 + mulx $npj,$mul1,$tmp1 + add $acc0,$car0,$car0 ! ap[j]*a0+c0 + add $acc1,$car1,$car1 + ld [$ap+$j],$apj ! ap[j] + and $car0,$mask,$acc0 + ld [$np+$j],$npj ! np[j] + srlx $car0,32,$car0 + add $acc0,$acc0,$acc0 + or $sbit,$acc0,$acc0 + mov $tmp1,$acc1 + srlx $acc0,32,$sbit + add $j,4,$j ! j++ + and $acc0,$mask,$acc0 + cmp $j,$num + add $acc0,$car1,$car1 + st $car1,[$tp] + mov $tmp0,$acc0 + srlx $car1,32,$car1 + bl %icc,.Lsqr_1st + add $tp,4,$tp ! tp++ +!.Lsqr_1st + + mulx $apj,$mul0,$tmp0 ! epilogue + mulx $npj,$mul1,$tmp1 + add $acc0,$car0,$car0 ! ap[j]*a0+c0 + add $acc1,$car1,$car1 + and $car0,$mask,$acc0 + srlx $car0,32,$car0 + add $acc0,$acc0,$acc0 + or $sbit,$acc0,$acc0 + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + add $acc0,$car1,$car1 + st $car1,[$tp] + srlx $car1,32,$car1 + + add $tmp0,$car0,$car0 ! ap[j]*a0+c0 + add $tmp1,$car1,$car1 + and $car0,$mask,$acc0 + srlx $car0,32,$car0 + add $acc0,$acc0,$acc0 + or $sbit,$acc0,$acc0 + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + add $acc0,$car1,$car1 + st $car1,[$tp+4] + srlx $car1,32,$car1 + + add $car0,$car0,$car0 + or $sbit,$car0,$car0 + add $car0,$car1,$car1 + st $car1,[$tp+8] + srlx $car1,32,$car2 + + ld [%sp+$bias+$frame],$tmp0 ! tp[0] + ld [%sp+$bias+$frame+4],$tmp1 ! tp[1] + ld [%sp+$bias+$frame+8],$tpj ! tp[2] + ld [$ap+4],$mul0 ! ap[1] + ld [$ap+8],$apj ! ap[2] + ld [$np],$car1 ! np[0] + ld [$np+4],$npj ! np[1] + mulx $n0,$tmp0,$mul1 + + mulx $mul0,$mul0,$car0 + and $mul1,$mask,$mul1 + + mulx $car1,$mul1,$car1 + mulx $npj,$mul1,$acc1 + add $tmp0,$car1,$car1 + and $car0,$mask,$acc0 + ld [$np+8],$npj ! np[2] + srlx $car1,32,$car1 + add $tmp1,$car1,$car1 + srlx $car0,32,$car0 + add $acc0,$car1,$car1 + and $car0,1,$sbit + add $acc1,$car1,$car1 + srlx $car0,1,$car0 + mov 12,$j + st $car1,[%sp+$bias+$frame] ! tp[0]= + srlx $car1,32,$car1 + add %sp,$bias+$frame+4,$tp + +.Lsqr_2nd: + mulx $apj,$mul0,$acc0 + mulx $npj,$mul1,$acc1 + add $acc0,$car0,$car0 + add $tpj,$car1,$car1 + ld [$ap+$j],$apj ! ap[j] + and $car0,$mask,$acc0 + ld [$np+$j],$npj ! np[j] + srlx $car0,32,$car0 + add $acc1,$car1,$car1 + ld [$tp+8],$tpj ! tp[j] + add $acc0,$acc0,$acc0 + add $j,4,$j ! j++ + or $sbit,$acc0,$acc0 + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + cmp $j,$num + add $acc0,$car1,$car1 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + bl %icc,.Lsqr_2nd + add $tp,4,$tp ! tp++ +!.Lsqr_2nd + + mulx $apj,$mul0,$acc0 + mulx $npj,$mul1,$acc1 + add $acc0,$car0,$car0 + add $tpj,$car1,$car1 + and $car0,$mask,$acc0 + srlx $car0,32,$car0 + add $acc1,$car1,$car1 + add $acc0,$acc0,$acc0 + or $sbit,$acc0,$acc0 + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + add $acc0,$car1,$car1 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + + add $car0,$car0,$car0 + or $sbit,$car0,$car0 + add $car0,$car1,$car1 + add $car2,$car1,$car1 + st $car1,[$tp+4] + srlx $car1,32,$car2 + + ld [%sp+$bias+$frame],$tmp1 ! tp[0] + ld [%sp+$bias+$frame+4],$tpj ! tp[1] + ld [$ap+8],$mul0 ! ap[2] + ld [$np],$car1 ! np[0] + ld [$np+4],$npj ! np[1] + mulx $n0,$tmp1,$mul1 + and $mul1,$mask,$mul1 + mov 8,$i + + mulx $mul0,$mul0,$car0 + mulx $car1,$mul1,$car1 + and $car0,$mask,$acc0 + add $tmp1,$car1,$car1 + srlx $car0,32,$car0 + add %sp,$bias+$frame,$tp + srlx $car1,32,$car1 + and $car0,1,$sbit + srlx $car0,1,$car0 + mov 4,$j + +.Lsqr_outer: +.Lsqr_inner1: + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + add $j,4,$j + ld [$tp+8],$tpj + cmp $j,$i + add $acc1,$car1,$car1 + ld [$np+$j],$npj + st $car1,[$tp] + srlx $car1,32,$car1 + bl %icc,.Lsqr_inner1 + add $tp,4,$tp +!.Lsqr_inner1 + + add $j,4,$j + ld [$ap+$j],$apj ! ap[j] + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + ld [$np+$j],$npj ! np[j] + add $acc0,$car1,$car1 + ld [$tp+8],$tpj ! tp[j] + add $acc1,$car1,$car1 + st $car1,[$tp] + srlx $car1,32,$car1 + + add $j,4,$j + cmp $j,$num + be,pn %icc,.Lsqr_no_inner2 + add $tp,4,$tp + +.Lsqr_inner2: + mulx $apj,$mul0,$acc0 + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + add $acc0,$car0,$car0 + ld [$ap+$j],$apj ! ap[j] + and $car0,$mask,$acc0 + ld [$np+$j],$npj ! np[j] + srlx $car0,32,$car0 + add $acc0,$acc0,$acc0 + ld [$tp+8],$tpj ! tp[j] + or $sbit,$acc0,$acc0 + add $j,4,$j ! j++ + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + cmp $j,$num + add $acc0,$car1,$car1 + add $acc1,$car1,$car1 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + bl %icc,.Lsqr_inner2 + add $tp,4,$tp ! tp++ + +.Lsqr_no_inner2: + mulx $apj,$mul0,$acc0 + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + add $acc0,$car0,$car0 + and $car0,$mask,$acc0 + srlx $car0,32,$car0 + add $acc0,$acc0,$acc0 + or $sbit,$acc0,$acc0 + srlx $acc0,32,$sbit + and $acc0,$mask,$acc0 + add $acc0,$car1,$car1 + add $acc1,$car1,$car1 + st $car1,[$tp] ! tp[j-1] + srlx $car1,32,$car1 + + add $car0,$car0,$car0 + or $sbit,$car0,$car0 + add $car0,$car1,$car1 + add $car2,$car1,$car1 + st $car1,[$tp+4] + srlx $car1,32,$car2 + + add $i,4,$i ! i++ + ld [%sp+$bias+$frame],$tmp1 ! tp[0] + ld [%sp+$bias+$frame+4],$tpj ! tp[1] + ld [$ap+$i],$mul0 ! ap[j] + ld [$np],$car1 ! np[0] + ld [$np+4],$npj ! np[1] + mulx $n0,$tmp1,$mul1 + and $mul1,$mask,$mul1 + add $i,4,$tmp0 + + mulx $mul0,$mul0,$car0 + mulx $car1,$mul1,$car1 + and $car0,$mask,$acc0 + add $tmp1,$car1,$car1 + srlx $car0,32,$car0 + add %sp,$bias+$frame,$tp + srlx $car1,32,$car1 + and $car0,1,$sbit + srlx $car0,1,$car0 + + cmp $tmp0,$num ! i<num-1 + bl %icc,.Lsqr_outer + mov 4,$j + +.Lsqr_last: + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + add $j,4,$j + ld [$tp+8],$tpj + cmp $j,$i + add $acc1,$car1,$car1 + ld [$np+$j],$npj + st $car1,[$tp] + srlx $car1,32,$car1 + bl %icc,.Lsqr_last + add $tp,4,$tp +!.Lsqr_last + + mulx $npj,$mul1,$acc1 + add $tpj,$car1,$car1 + add $acc0,$car1,$car1 + add $acc1,$car1,$car1 + st $car1,[$tp] + srlx $car1,32,$car1 + + add $car0,$car0,$car0 ! recover $car0 + or $sbit,$car0,$car0 + add $car0,$car1,$car1 + add $car2,$car1,$car1 + st $car1,[$tp+4] + srlx $car1,32,$car2 + + ba .Ltail + add $tp,8,$tp +.type $fname,#function +.size $fname,(.-$fname) +.asciz "Montgomery Multipltication for SPARCv9, CRYPTOGAMS by <appro\@openssl.org>" +.align 32 +___ +$code =~ s/\`([^\`]*)\`/eval($1)/gem; +print $code; +close STDOUT; |