diff options
Diffstat (limited to 'drivers/builtin_openssl2/crypto/sha/asm/sha1-s390x.pl')
| -rw-r--r-- | drivers/builtin_openssl2/crypto/sha/asm/sha1-s390x.pl | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/drivers/builtin_openssl2/crypto/sha/asm/sha1-s390x.pl b/drivers/builtin_openssl2/crypto/sha/asm/sha1-s390x.pl new file mode 100644 index 0000000000..9193dda45e --- /dev/null +++ b/drivers/builtin_openssl2/crypto/sha/asm/sha1-s390x.pl @@ -0,0 +1,246 @@ +#!/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/. +# ==================================================================== + +# SHA1 block procedure for s390x. + +# April 2007. +# +# Performance is >30% better than gcc 3.3 generated code. But the real +# twist is that SHA1 hardware support is detected and utilized. In +# which case performance can reach further >4.5x for larger chunks. + +# January 2009. +# +# Optimize Xupdate for amount of memory references and reschedule +# instructions to favour dual-issue z10 pipeline. On z10 hardware is +# "only" ~2.3x faster than software. + +# November 2010. +# +# Adapt for -m31 build. If kernel supports what's called "highgprs" +# feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit +# instructions and achieve "64-bit" performance even in 31-bit legacy +# application context. The feature is not specific to any particular +# processor, as long as it's "z-CPU". Latter implies that the code +# remains z/Architecture specific. + +$kimdfunc=1; # magic function code for kimd instruction + +$flavour = shift; + +if ($flavour =~ /3[12]/) { + $SIZE_T=4; + $g=""; +} else { + $SIZE_T=8; + $g="g"; +} + +while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} +open STDOUT,">$output"; + +$K_00_39="%r0"; $K=$K_00_39; +$K_40_79="%r1"; +$ctx="%r2"; $prefetch="%r2"; +$inp="%r3"; +$len="%r4"; + +$A="%r5"; +$B="%r6"; +$C="%r7"; +$D="%r8"; +$E="%r9"; @V=($A,$B,$C,$D,$E); +$t0="%r10"; +$t1="%r11"; +@X=("%r12","%r13","%r14"); +$sp="%r15"; + +$stdframe=16*$SIZE_T+4*8; +$frame=$stdframe+16*4; + +sub Xupdate { +my $i=shift; + +$code.=<<___ if ($i==15); + lg $prefetch,$stdframe($sp) ### Xupdate(16) warm-up + lr $X[0],$X[2] +___ +return if ($i&1); # Xupdate is vectorized and executed every 2nd cycle +$code.=<<___ if ($i<16); + lg $X[0],`$i*4`($inp) ### Xload($i) + rllg $X[1],$X[0],32 +___ +$code.=<<___ if ($i>=16); + xgr $X[0],$prefetch ### Xupdate($i) + lg $prefetch,`$stdframe+4*(($i+2)%16)`($sp) + xg $X[0],`$stdframe+4*(($i+8)%16)`($sp) + xgr $X[0],$prefetch + rll $X[0],$X[0],1 + rllg $X[1],$X[0],32 + rll $X[1],$X[1],1 + rllg $X[0],$X[1],32 + lr $X[2],$X[1] # feedback +___ +$code.=<<___ if ($i<=70); + stg $X[0],`$stdframe+4*($i%16)`($sp) +___ +unshift(@X,pop(@X)); +} + +sub BODY_00_19 { +my ($i,$a,$b,$c,$d,$e)=@_; +my $xi=$X[1]; + + &Xupdate($i); +$code.=<<___; + alr $e,$K ### $i + rll $t1,$a,5 + lr $t0,$d + xr $t0,$c + alr $e,$t1 + nr $t0,$b + alr $e,$xi + xr $t0,$d + rll $b,$b,30 + alr $e,$t0 +___ +} + +sub BODY_20_39 { +my ($i,$a,$b,$c,$d,$e)=@_; +my $xi=$X[1]; + + &Xupdate($i); +$code.=<<___; + alr $e,$K ### $i + rll $t1,$a,5 + lr $t0,$b + alr $e,$t1 + xr $t0,$c + alr $e,$xi + xr $t0,$d + rll $b,$b,30 + alr $e,$t0 +___ +} + +sub BODY_40_59 { +my ($i,$a,$b,$c,$d,$e)=@_; +my $xi=$X[1]; + + &Xupdate($i); +$code.=<<___; + alr $e,$K ### $i + rll $t1,$a,5 + lr $t0,$b + alr $e,$t1 + or $t0,$c + lr $t1,$b + nr $t0,$d + nr $t1,$c + alr $e,$xi + or $t0,$t1 + rll $b,$b,30 + alr $e,$t0 +___ +} + +$code.=<<___; +.text +.align 64 +.type Ktable,\@object +Ktable: .long 0x5a827999,0x6ed9eba1,0x8f1bbcdc,0xca62c1d6 + .skip 48 #.long 0,0,0,0,0,0,0,0,0,0,0,0 +.size Ktable,.-Ktable +.globl sha1_block_data_order +.type sha1_block_data_order,\@function +sha1_block_data_order: +___ +$code.=<<___ if ($kimdfunc); + larl %r1,OPENSSL_s390xcap_P + lg %r0,0(%r1) + tmhl %r0,0x4000 # check for message-security assist + jz .Lsoftware + lghi %r0,0 + la %r1,`2*$SIZE_T`($sp) + .long 0xb93e0002 # kimd %r0,%r2 + lg %r0,`2*$SIZE_T`($sp) + tmhh %r0,`0x8000>>$kimdfunc` + jz .Lsoftware + lghi %r0,$kimdfunc + lgr %r1,$ctx + lgr %r2,$inp + sllg %r3,$len,6 + .long 0xb93e0002 # kimd %r0,%r2 + brc 1,.-4 # pay attention to "partial completion" + br %r14 +.align 16 +.Lsoftware: +___ +$code.=<<___; + lghi %r1,-$frame + st${g} $ctx,`2*$SIZE_T`($sp) + stm${g} %r6,%r15,`6*$SIZE_T`($sp) + lgr %r0,$sp + la $sp,0(%r1,$sp) + st${g} %r0,0($sp) + + larl $t0,Ktable + llgf $A,0($ctx) + llgf $B,4($ctx) + llgf $C,8($ctx) + llgf $D,12($ctx) + llgf $E,16($ctx) + + lg $K_00_39,0($t0) + lg $K_40_79,8($t0) + +.Lloop: + rllg $K_00_39,$K_00_39,32 +___ +for ($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; + rllg $K_00_39,$K_00_39,32 +___ +for (;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; $K=$K_40_79; + rllg $K_40_79,$K_40_79,32 +___ +for (;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; + rllg $K_40_79,$K_40_79,32 +___ +for (;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } +$code.=<<___; + + l${g} $ctx,`$frame+2*$SIZE_T`($sp) + la $inp,64($inp) + al $A,0($ctx) + al $B,4($ctx) + al $C,8($ctx) + al $D,12($ctx) + al $E,16($ctx) + st $A,0($ctx) + st $B,4($ctx) + st $C,8($ctx) + st $D,12($ctx) + st $E,16($ctx) + brct${g} $len,.Lloop + + lm${g} %r6,%r15,`$frame+6*$SIZE_T`($sp) + br %r14 +.size sha1_block_data_order,.-sha1_block_data_order +.string "SHA1 block transform for s390x, CRYPTOGAMS by <appro\@openssl.org>" +.comm OPENSSL_s390xcap_P,16,8 +___ + +$code =~ s/\`([^\`]*)\`/eval $1/gem; + +print $code; +close STDOUT; |