crypto/sha/asm/sha512-s390x.pl

   1 #!/usr/bin/env perl
   2
   3 # ====================================================================
   4 # Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
   5 # project. The module is, however, dual licensed under OpenSSL and
   6 # CRYPTOGAMS licenses depending on where you obtain it. For further
   7 # details see http://www.openssl.org/~appro/cryptogams/.
   8 # ====================================================================
   9
  10 # SHA256/512 block procedures for s390x.
  11
  12 # April 2007.
  13 #
  14 # sha256_block_data_order is reportedly >3 times faster than gcc 3.3
  15 # generated code (must be a bug in compiler, as improvement is
  16 # "pathologically" high, in particular in comparison to other SHA
  17 # modules). But the real twist is that it detects if hardware support
  18 # for SHA256 is available and in such case utilizes it. Then the
  19 # performance can reach >6.5x of assembler one for larger chunks.
  20 #
  21 # sha512_block_data_order is ~70% faster than gcc 3.3 generated code.
  22
  23 # January 2009.
  24 #
  25 # Add support for hardware SHA512 and reschedule instructions to
  26 # favour dual-issue z10 pipeline. Hardware SHA256/512 is ~4.7x faster
  27 # than software.
  28
  29 # November 2010.
  30 #
  31 # Adapt for -m31 build. If kernel supports what's called "highgprs"
  32 # feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit
  33 # instructions and achieve "64-bit" performance even in 31-bit legacy
  34 # application context. The feature is not specific to any particular
  35 # processor, as long as it's "z-CPU". Latter implies that the code
  36 # remains z/Architecture specific. On z990 SHA256 was measured to
  37 # perform 2.4x and SHA512 - 13x better than code generated by gcc 4.3.
  38
  39 $flavour = shift;
  40
  41 if ($flavour =~ /3[12]/) {
  42         $SIZE_T=4;
  43         $g="";
  44 } else {
  45         $SIZE_T=8;
  46         $g="g";
  47 }
  48
  49 $t0="%r0";
  50 $t1="%r1";
  51 $ctx="%r2";     $t2="%r2";
  52 $inp="%r3";
  53 $len="%r4";     # used as index in inner loop
  54
  55 $A="%r5";
  56 $B="%r6";
  57 $C="%r7";
  58 $D="%r8";
  59 $E="%r9";
  60 $F="%r10";
  61 $G="%r11";
  62 $H="%r12";      @V=($A,$B,$C,$D,$E,$F,$G,$H);
  63 $tbl="%r13";
  64 $T1="%r14";
  65 $sp="%r15";
  66
  67 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
  68 open STDOUT,">$output";
  69
  70 if ($output =~ /512/) {
  71         $label="512";
  72         $SZ=8;
  73         $LD="lg";       # load from memory
  74         $ST="stg";      # store to memory
  75         $ADD="alg";     # add with memory operand
  76         $ROT="rllg";    # rotate left
  77         $SHR="srlg";    # logical right shift [see even at the end]
  78         @Sigma0=(25,30,36);
  79         @Sigma1=(23,46,50);
  80         @sigma0=(56,63, 7);
  81         @sigma1=( 3,45, 6);
  82         $rounds=80;
  83         $kimdfunc=3;    # 0 means unknown/unsupported/unimplemented/disabled
  84 } else {
  85         $label="256";
  86         $SZ=4;
  87         $LD="llgf";     # load from memory
  88         $ST="st";       # store to memory
  89         $ADD="al";      # add with memory operand
  90         $ROT="rll";     # rotate left
  91         $SHR="srl";     # logical right shift
  92         @Sigma0=(10,19,30);
  93         @Sigma1=( 7,21,26);
  94         @sigma0=(14,25, 3);
  95         @sigma1=(13,15,10);
  96         $rounds=64;
  97         $kimdfunc=2;    # magic function code for kimd instruction
  98 }
  99 $Func="sha${label}_block_data_order";
 100 $Table="K${label}";
 101 $stdframe=16*$SIZE_T+4*8;
 102 $frame=$stdframe+16*$SZ;
 103
 104 sub BODY_00_15 {
 105 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
 106
 107 $code.=<<___ if ($i<16);
 108         $LD     $T1,`$i*$SZ`($inp)      ### $i
 109 ___
 110 $code.=<<___;
 111         $ROT    $t0,$e,$Sigma1[0]
 112         $ROT    $t1,$e,$Sigma1[1]
 113          lgr    $t2,$f
 114         xgr     $t0,$t1
 115         $ROT    $t1,$t1,`$Sigma1[2]-$Sigma1[1]`
 116          xgr    $t2,$g
 117         $ST     $T1,`$stdframe+$SZ*($i%16)`($sp)
 118         xgr     $t0,$t1                 # Sigma1(e)
 119         algr    $T1,$h                  # T1+=h
 120          ngr    $t2,$e
 121          lgr    $t1,$a
 122         algr    $T1,$t0                 # T1+=Sigma1(e)
 123         $ROT    $h,$a,$Sigma0[0]
 124          xgr    $t2,$g                  # Ch(e,f,g)
 125         $ADD    $T1,`$i*$SZ`($len,$tbl) # T1+=K[i]
 126         $ROT    $t0,$a,$Sigma0[1]
 127         algr    $T1,$t2                 # T1+=Ch(e,f,g)
 128          ogr    $t1,$b
 129         xgr     $h,$t0
 130          lgr    $t2,$a
 131          ngr    $t1,$c
 132         $ROT    $t0,$t0,`$Sigma0[2]-$Sigma0[1]`
 133         xgr     $h,$t0                  # h=Sigma0(a)
 134          ngr    $t2,$b
 135         algr    $h,$T1                  # h+=T1
 136          ogr    $t2,$t1                 # Maj(a,b,c)
 137         algr    $d,$T1                  # d+=T1
 138         algr    $h,$t2                  # h+=Maj(a,b,c)
 139 ___
 140 }
 141
 142 sub BODY_16_XX {
 143 my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_;
 144
 145 $code.=<<___;
 146         $LD     $T1,`$stdframe+$SZ*(($i+1)%16)`($sp)    ### $i
 147         $LD     $t1,`$stdframe+$SZ*(($i+14)%16)`($sp)
 148         $ROT    $t0,$T1,$sigma0[0]
 149         $SHR    $T1,$sigma0[2]
 150         $ROT    $t2,$t0,`$sigma0[1]-$sigma0[0]`
 151         xgr     $T1,$t0
 152         $ROT    $t0,$t1,$sigma1[0]
 153         xgr     $T1,$t2                                 # sigma0(X[i+1])
 154         $SHR    $t1,$sigma1[2]
 155         $ADD    $T1,`$stdframe+$SZ*($i%16)`($sp)        # +=X[i]
 156         xgr     $t1,$t0
 157         $ROT    $t0,$t0,`$sigma1[1]-$sigma1[0]`
 158         $ADD    $T1,`$stdframe+$SZ*(($i+9)%16)`($sp)    # +=X[i+9]
 159         xgr     $t1,$t0                         # sigma1(X[i+14])
 160         algr    $T1,$t1                         # +=sigma1(X[i+14])
 161 ___
 162         &BODY_00_15(@_);
 163 }
 164
 165 $code.=<<___;
 166 .text
 167 .align  64
 168 .type   $Table,\@object
 169 $Table:
 170 ___
 171 $code.=<<___ if ($SZ==4);
 172         .long   0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
 173         .long   0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
 174         .long   0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
 175         .long   0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
 176         .long   0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
 177         .long   0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
 178         .long   0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
 179         .long   0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
 180         .long   0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
 181         .long   0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
 182         .long   0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
 183         .long   0xd192e819,0xd6990624,0xf40e3585,0x106aa070
 184         .long   0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
 185         .long   0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
 186         .long   0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
 187         .long   0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
 188 ___
 189 $code.=<<___ if ($SZ==8);
 190         .quad   0x428a2f98d728ae22,0x7137449123ef65cd
 191         .quad   0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
 192         .quad   0x3956c25bf348b538,0x59f111f1b605d019
 193         .quad   0x923f82a4af194f9b,0xab1c5ed5da6d8118
 194         .quad   0xd807aa98a3030242,0x12835b0145706fbe
 195         .quad   0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
 196         .quad   0x72be5d74f27b896f,0x80deb1fe3b1696b1
 197         .quad   0x9bdc06a725c71235,0xc19bf174cf692694
 198         .quad   0xe49b69c19ef14ad2,0xefbe4786384f25e3
 199         .quad   0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
 200         .quad   0x2de92c6f592b0275,0x4a7484aa6ea6e483
 201         .quad   0x5cb0a9dcbd41fbd4,0x76f988da831153b5
 202         .quad   0x983e5152ee66dfab,0xa831c66d2db43210
 203         .quad   0xb00327c898fb213f,0xbf597fc7beef0ee4
 204         .quad   0xc6e00bf33da88fc2,0xd5a79147930aa725
 205         .quad   0x06ca6351e003826f,0x142929670a0e6e70
 206         .quad   0x27b70a8546d22ffc,0x2e1b21385c26c926
 207         .quad   0x4d2c6dfc5ac42aed,0x53380d139d95b3df
 208         .quad   0x650a73548baf63de,0x766a0abb3c77b2a8
 209         .quad   0x81c2c92e47edaee6,0x92722c851482353b
 210         .quad   0xa2bfe8a14cf10364,0xa81a664bbc423001
 211         .quad   0xc24b8b70d0f89791,0xc76c51a30654be30
 212         .quad   0xd192e819d6ef5218,0xd69906245565a910
 213         .quad   0xf40e35855771202a,0x106aa07032bbd1b8
 214         .quad   0x19a4c116b8d2d0c8,0x1e376c085141ab53
 215         .quad   0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
 216         .quad   0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
 217         .quad   0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
 218         .quad   0x748f82ee5defb2fc,0x78a5636f43172f60
 219         .quad   0x84c87814a1f0ab72,0x8cc702081a6439ec
 220         .quad   0x90befffa23631e28,0xa4506cebde82bde9
 221         .quad   0xbef9a3f7b2c67915,0xc67178f2e372532b
 222         .quad   0xca273eceea26619c,0xd186b8c721c0c207
 223         .quad   0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
 224         .quad   0x06f067aa72176fba,0x0a637dc5a2c898a6
 225         .quad   0x113f9804bef90dae,0x1b710b35131c471b
 226         .quad   0x28db77f523047d84,0x32caab7b40c72493
 227         .quad   0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
 228         .quad   0x4cc5d4becb3e42b6,0x597f299cfc657e2a
 229         .quad   0x5fcb6fab3ad6faec,0x6c44198c4a475817
 230 ___
 231 $code.=<<___;
 232 .size   $Table,.-$Table
 233 .globl  $Func
 234 .type   $Func,\@function
 235 $Func:
 236         sllg    $len,$len,`log(16*$SZ)/log(2)`
 237 ___
 238 $code.=<<___ if ($kimdfunc);
 239         larl    %r1,OPENSSL_s390xcap_P
 240         lg      %r0,0(%r1)
 241         tmhl    %r0,0x4000      # check for message-security assist
 242         jz      .Lsoftware
 243         lghi    %r0,0
 244         la      %r1,`2*$SIZE_T`($sp)
 245         .long   0xb93e0002      # kimd %r0,%r2
 246         lg      %r0,`2*$SIZE_T`($sp)
 247         tmhh    %r0,`0x8000>>$kimdfunc`
 248         jz      .Lsoftware
 249         lghi    %r0,$kimdfunc
 250         lgr     %r1,$ctx
 251         lgr     %r2,$inp
 252         lgr     %r3,$len
 253         .long   0xb93e0002      # kimd %r0,%r2
 254         brc     1,.-4           # pay attention to "partial completion"
 255         br      %r14
 256 .align  16
 257 .Lsoftware:
 258 ___
 259 $code.=<<___;
 260         lghi    %r1,-$frame
 261         la      $len,0($len,$inp)
 262         stm${g} $ctx,%r15,`2*$SIZE_T`($sp)
 263         lgr     %r0,$sp
 264         la      $sp,0(%r1,$sp)
 265         st${g}  %r0,0($sp)
 266
 267         larl    $tbl,$Table
 268         $LD     $A,`0*$SZ`($ctx)
 269         $LD     $B,`1*$SZ`($ctx)
 270         $LD     $C,`2*$SZ`($ctx)
 271         $LD     $D,`3*$SZ`($ctx)
 272         $LD     $E,`4*$SZ`($ctx)
 273         $LD     $F,`5*$SZ`($ctx)
 274         $LD     $G,`6*$SZ`($ctx)
 275         $LD     $H,`7*$SZ`($ctx)
 276
 277 .Lloop:
 278         lghi    $len,0
 279 ___
 280 for ($i=0;$i<16;$i++)   { &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
 281 $code.=".Lrounds_16_xx:\n";
 282 for (;$i<32;$i++)       { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); }
 283 $code.=<<___;
 284         aghi    $len,`16*$SZ`
 285         lghi    $t0,`($rounds-16)*$SZ`
 286         clgr    $len,$t0
 287         jne     .Lrounds_16_xx
 288
 289         l${g}   $ctx,`$frame+2*$SIZE_T`($sp)
 290         la      $inp,`16*$SZ`($inp)
 291         $ADD    $A,`0*$SZ`($ctx)
 292         $ADD    $B,`1*$SZ`($ctx)
 293         $ADD    $C,`2*$SZ`($ctx)
 294         $ADD    $D,`3*$SZ`($ctx)
 295         $ADD    $E,`4*$SZ`($ctx)
 296         $ADD    $F,`5*$SZ`($ctx)
 297         $ADD    $G,`6*$SZ`($ctx)
 298         $ADD    $H,`7*$SZ`($ctx)
 299         $ST     $A,`0*$SZ`($ctx)
 300         $ST     $B,`1*$SZ`($ctx)
 301         $ST     $C,`2*$SZ`($ctx)
 302         $ST     $D,`3*$SZ`($ctx)
 303         $ST     $E,`4*$SZ`($ctx)
 304         $ST     $F,`5*$SZ`($ctx)
 305         $ST     $G,`6*$SZ`($ctx)
 306         $ST     $H,`7*$SZ`($ctx)
 307         cl${g}  $inp,`$frame+4*$SIZE_T`($sp)
 308         jne     .Lloop
 309
 310         lm${g}  %r6,%r15,`$frame+6*$SIZE_T`($sp)
 311         br      %r14
 312 .size   $Func,.-$Func
 313 .string "SHA${label} block transform for s390x, CRYPTOGAMS by <appro\@openssl.org>"
 314 .comm   OPENSSL_s390xcap_P,16,8
 315 ___
 316
 317 $code =~ s/\`([^\`]*)\`/eval $1/gem;
 318 # unlike 32-bit shift 64-bit one takes three arguments
 319 $code =~ s/(srlg\s+)(%r[0-9]+),/$1$2,$2,/gm;
 320
 321 print $code;
 322 close STDOUT;