| #!/usr/bin/env perl |
| |
| # ==================================================================== |
| # Written by Andy Polyakov <appro@openssl.org> 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/. |
| # ==================================================================== |
| |
| # March 2010 |
| # |
| # The module implements "4-bit" GCM GHASH function and underlying |
| # single multiplication operation in GF(2^128). "4-bit" means that it |
| # uses 256 bytes per-key table [+128 bytes shared table]. Performance |
| # results are for streamed GHASH subroutine on UltraSPARC pre-Tx CPU |
| # and are expressed in cycles per processed byte, less is better: |
| # |
| # gcc 3.3.x cc 5.2 this assembler |
| # |
| # 32-bit build 81.4 43.3 12.6 (+546%/+244%) |
| # 64-bit build 20.2 21.2 12.6 (+60%/+68%) |
| # |
| # Here is data collected on UltraSPARC T1 system running Linux: |
| # |
| # gcc 4.4.1 this assembler |
| # |
| # 32-bit build 566 50 (+1000%) |
| # 64-bit build 56 50 (+12%) |
| # |
| # I don't quite understand why difference between 32-bit and 64-bit |
| # compiler-generated code is so big. Compilers *were* instructed to |
| # generate code for UltraSPARC and should have used 64-bit registers |
| # for Z vector (see C code) even in 32-bit build... Oh well, it only |
| # means more impressive improvement coefficients for this assembler |
| # module;-) Loops are aggressively modulo-scheduled in respect to |
| # references to input data and Z.hi updates to achieve 12 cycles |
| # timing. To anchor to something else, sha1-sparcv9.pl spends 11.6 |
| # cycles to process one byte on UltraSPARC pre-Tx CPU and ~24 on T1. |
| |
| $bits=32; |
| for (@ARGV) { $bits=64 if (/\-m64/ || /\-xarch\=v9/); } |
| if ($bits==64) { $bias=2047; $frame=192; } |
| else { $bias=0; $frame=112; } |
| |
| $output=shift; |
| open STDOUT,">$output"; |
| |
| $Zhi="%o0"; # 64-bit values |
| $Zlo="%o1"; |
| $Thi="%o2"; |
| $Tlo="%o3"; |
| $rem="%o4"; |
| $tmp="%o5"; |
| |
| $nhi="%l0"; # small values and pointers |
| $nlo="%l1"; |
| $xi0="%l2"; |
| $xi1="%l3"; |
| $rem_4bit="%l4"; |
| $remi="%l5"; |
| $Htblo="%l6"; |
| $cnt="%l7"; |
| |
| $Xi="%i0"; # input argument block |
| $Htbl="%i1"; |
| $inp="%i2"; |
| $len="%i3"; |
| |
| $code.=<<___; |
| .section ".text",#alloc,#execinstr |
| |
| .align 64 |
| rem_4bit: |
| .long `0x0000<<16`,0,`0x1C20<<16`,0,`0x3840<<16`,0,`0x2460<<16`,0 |
| .long `0x7080<<16`,0,`0x6CA0<<16`,0,`0x48C0<<16`,0,`0x54E0<<16`,0 |
| .long `0xE100<<16`,0,`0xFD20<<16`,0,`0xD940<<16`,0,`0xC560<<16`,0 |
| .long `0x9180<<16`,0,`0x8DA0<<16`,0,`0xA9C0<<16`,0,`0xB5E0<<16`,0 |
| .type rem_4bit,#object |
| .size rem_4bit,(.-rem_4bit) |
| |
| .globl gcm_ghash_4bit |
| .align 32 |
| gcm_ghash_4bit: |
| save %sp,-$frame,%sp |
| ldub [$inp+15],$nlo |
| ldub [$Xi+15],$xi0 |
| ldub [$Xi+14],$xi1 |
| add $len,$inp,$len |
| add $Htbl,8,$Htblo |
| |
| 1: call .+8 |
| add %o7,rem_4bit-1b,$rem_4bit |
| |
| .Louter: |
| xor $xi0,$nlo,$nlo |
| and $nlo,0xf0,$nhi |
| and $nlo,0x0f,$nlo |
| sll $nlo,4,$nlo |
| ldx [$Htblo+$nlo],$Zlo |
| ldx [$Htbl+$nlo],$Zhi |
| |
| ldub [$inp+14],$nlo |
| |
| ldx [$Htblo+$nhi],$Tlo |
| and $Zlo,0xf,$remi |
| ldx [$Htbl+$nhi],$Thi |
| sll $remi,3,$remi |
| ldx [$rem_4bit+$remi],$rem |
| srlx $Zlo,4,$Zlo |
| mov 13,$cnt |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| |
| xor $xi1,$nlo,$nlo |
| and $Zlo,0xf,$remi |
| and $nlo,0xf0,$nhi |
| and $nlo,0x0f,$nlo |
| ba .Lghash_inner |
| sll $nlo,4,$nlo |
| .align 32 |
| .Lghash_inner: |
| ldx [$Htblo+$nlo],$Tlo |
| sll $remi,3,$remi |
| xor $Thi,$Zhi,$Zhi |
| ldx [$Htbl+$nlo],$Thi |
| srlx $Zlo,4,$Zlo |
| xor $rem,$Zhi,$Zhi |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| ldub [$inp+$cnt],$nlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| ldub [$Xi+$cnt],$xi1 |
| xor $Thi,$Zhi,$Zhi |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nhi],$Tlo |
| sll $remi,3,$remi |
| xor $rem,$Zhi,$Zhi |
| ldx [$Htbl+$nhi],$Thi |
| srlx $Zlo,4,$Zlo |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $xi1,$nlo,$nlo |
| srlx $Zhi,4,$Zhi |
| and $nlo,0xf0,$nhi |
| addcc $cnt,-1,$cnt |
| xor $Zlo,$tmp,$Zlo |
| and $nlo,0x0f,$nlo |
| xor $Tlo,$Zlo,$Zlo |
| sll $nlo,4,$nlo |
| blu .Lghash_inner |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nlo],$Tlo |
| sll $remi,3,$remi |
| xor $Thi,$Zhi,$Zhi |
| ldx [$Htbl+$nlo],$Thi |
| srlx $Zlo,4,$Zlo |
| xor $rem,$Zhi,$Zhi |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| |
| add $inp,16,$inp |
| cmp $inp,$len |
| be,pn `$bits==64?"%xcc":"%icc"`,.Ldone |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nhi],$Tlo |
| sll $remi,3,$remi |
| xor $rem,$Zhi,$Zhi |
| ldx [$Htbl+$nhi],$Thi |
| srlx $Zlo,4,$Zlo |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| ldub [$inp+15],$nlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| stx $Zlo,[$Xi+8] |
| xor $rem,$Zhi,$Zhi |
| stx $Zhi,[$Xi] |
| srl $Zlo,8,$xi1 |
| and $Zlo,0xff,$xi0 |
| ba .Louter |
| and $xi1,0xff,$xi1 |
| .align 32 |
| .Ldone: |
| ldx [$Htblo+$nhi],$Tlo |
| sll $remi,3,$remi |
| xor $rem,$Zhi,$Zhi |
| ldx [$Htbl+$nhi],$Thi |
| srlx $Zlo,4,$Zlo |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| stx $Zlo,[$Xi+8] |
| xor $rem,$Zhi,$Zhi |
| stx $Zhi,[$Xi] |
| |
| ret |
| restore |
| .type gcm_ghash_4bit,#function |
| .size gcm_ghash_4bit,(.-gcm_ghash_4bit) |
| ___ |
| |
| undef $inp; |
| undef $len; |
| |
| $code.=<<___; |
| .globl gcm_gmult_4bit |
| .align 32 |
| gcm_gmult_4bit: |
| save %sp,-$frame,%sp |
| ldub [$Xi+15],$nlo |
| add $Htbl,8,$Htblo |
| |
| 1: call .+8 |
| add %o7,rem_4bit-1b,$rem_4bit |
| |
| and $nlo,0xf0,$nhi |
| and $nlo,0x0f,$nlo |
| sll $nlo,4,$nlo |
| ldx [$Htblo+$nlo],$Zlo |
| ldx [$Htbl+$nlo],$Zhi |
| |
| ldub [$Xi+14],$nlo |
| |
| ldx [$Htblo+$nhi],$Tlo |
| and $Zlo,0xf,$remi |
| ldx [$Htbl+$nhi],$Thi |
| sll $remi,3,$remi |
| ldx [$rem_4bit+$remi],$rem |
| srlx $Zlo,4,$Zlo |
| mov 13,$cnt |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| |
| and $Zlo,0xf,$remi |
| and $nlo,0xf0,$nhi |
| and $nlo,0x0f,$nlo |
| ba .Lgmult_inner |
| sll $nlo,4,$nlo |
| .align 32 |
| .Lgmult_inner: |
| ldx [$Htblo+$nlo],$Tlo |
| sll $remi,3,$remi |
| xor $Thi,$Zhi,$Zhi |
| ldx [$Htbl+$nlo],$Thi |
| srlx $Zlo,4,$Zlo |
| xor $rem,$Zhi,$Zhi |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| ldub [$Xi+$cnt],$nlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nhi],$Tlo |
| sll $remi,3,$remi |
| xor $rem,$Zhi,$Zhi |
| ldx [$Htbl+$nhi],$Thi |
| srlx $Zlo,4,$Zlo |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| srlx $Zhi,4,$Zhi |
| and $nlo,0xf0,$nhi |
| addcc $cnt,-1,$cnt |
| xor $Zlo,$tmp,$Zlo |
| and $nlo,0x0f,$nlo |
| xor $Tlo,$Zlo,$Zlo |
| sll $nlo,4,$nlo |
| blu .Lgmult_inner |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nlo],$Tlo |
| sll $remi,3,$remi |
| xor $Thi,$Zhi,$Zhi |
| ldx [$Htbl+$nlo],$Thi |
| srlx $Zlo,4,$Zlo |
| xor $rem,$Zhi,$Zhi |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| and $Zlo,0xf,$remi |
| |
| ldx [$Htblo+$nhi],$Tlo |
| sll $remi,3,$remi |
| xor $rem,$Zhi,$Zhi |
| ldx [$Htbl+$nhi],$Thi |
| srlx $Zlo,4,$Zlo |
| ldx [$rem_4bit+$remi],$rem |
| sllx $Zhi,60,$tmp |
| xor $Tlo,$Zlo,$Zlo |
| srlx $Zhi,4,$Zhi |
| xor $Zlo,$tmp,$Zlo |
| xor $Thi,$Zhi,$Zhi |
| stx $Zlo,[$Xi+8] |
| xor $rem,$Zhi,$Zhi |
| stx $Zhi,[$Xi] |
| |
| ret |
| restore |
| .type gcm_gmult_4bit,#function |
| .size gcm_gmult_4bit,(.-gcm_gmult_4bit) |
| .asciz "GHASH for SPARCv9, CRYPTOGAMS by <appro\@openssl.org>" |
| .align 4 |
| ___ |
| |
| $code =~ s/\`([^\`]*)\`/eval $1/gem; |
| print $code; |
| close STDOUT; |
