crypto/sha/asm/sha1-ia64.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 # Eternal question is what's wrong with compiler generated code? The
  11 # trick is that it's possible to reduce the number of shifts required
  12 # to perform rotations by maintaining copy of 32-bit value in upper
  13 # bits of 64-bit register. Just follow mux2 and shrp instructions...
  14 # Performance under big-endian OS such as HP-UX is 179MBps*1GHz, which
  15 # is >50% better than HP C and >2x better than gcc.
  16
  17 $code=<<___;
  18 .ident  \"sha1-ia64.s, version 1.3\"
  19 .ident  \"IA-64 ISA artwork by Andy Polyakov <appro\@fy.chalmers.se>\"
  20 .explicit
  21
  22 ___
  23
  24
  25 if ($^O eq "hpux") {
  26     $ADDP="addp4";
  27     for (@ARGV) { $ADDP="add" if (/[\+DD|\-mlp]64/); }
  28 } else { $ADDP="add"; }
  29
  30 #$human=1;
  31 if ($human) {   # useful for visual code auditing...
  32         ($A,$B,$C,$D,$E)   = ("A","B","C","D","E");
  33         ($h0,$h1,$h2,$h3,$h4) = ("h0","h1","h2","h3","h4");
  34         ($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
  35             (   "K_00_19","K_20_39","K_40_59","K_60_79" );
  36         @X= (   "X0", "X1", "X2", "X3", "X4", "X5", "X6", "X7",
  37                 "X8", "X9","X10","X11","X12","X13","X14","X15"  );
  38 }
  39 else {
  40         ($A,$B,$C,$D,$E)   =    ("loc0","loc1","loc2","loc3","loc4");
  41         ($h0,$h1,$h2,$h3,$h4) = ("loc5","loc6","loc7","loc8","loc9");
  42         ($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
  43             (   "r14", "r15", "loc10", "loc11"  );
  44         @X= (   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
  45                 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"  );
  46 }
  47
  48 sub BODY_00_15 {
  49 local   *code=shift;
  50 my      ($i,$a,$b,$c,$d,$e)=@_;
  51 my      $j=$i+1;
  52 my      $Xn=@X[$j%16];
  53
  54 $code.=<<___ if ($i==0);
  55 { .mmi; ld1     $X[$i]=[inp],2              // MSB
  56         ld1     tmp2=[tmp3],2           };;
  57 { .mmi; ld1     tmp0=[inp],2
  58         ld1     tmp4=[tmp3],2               // LSB
  59         dep     $X[$i]=$X[$i],tmp2,8,8  };;
  60 ___
  61 if ($i<15) {
  62         $code.=<<___;
  63 { .mmi; ld1     $Xn=[inp],2                 // forward Xload
  64         nop.m   0x0
  65         dep     tmp1=tmp0,tmp4,8,8      };;
  66 { .mmi; ld1     tmp2=[tmp3],2               // forward Xload
  67         and     tmp4=$c,$b
  68         dep     $X[$i]=$X[$i],tmp1,16,16} //;;
  69 { .mmi; add     $e=$e,$K_00_19              // e+=K_00_19
  70         andcm   tmp1=$d,$b
  71         dep.z   tmp5=$a,5,27            };; // a<<5
  72 { .mmi; add     $e=$e,$X[$i]                // e+=Xload
  73         or      tmp4=tmp4,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
  74         extr.u  tmp1=$a,27,5            };; // a>>27
  75 { .mmi; ld1     tmp0=[inp],2                // forward Xload
  76         add     $e=$e,tmp4                  // e+=F_00_19(b,c,d)
  77         shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
  78 { .mmi; ld1     tmp4=[tmp3],2               // forward Xload
  79         or      tmp5=tmp1,tmp5              // ROTATE(a,5)
  80         mux2    tmp6=$a,0x44            };; // see b in next iteration
  81 { .mii; add     $e=$e,tmp5                  // e+=ROTATE(a,5)
  82         dep     $Xn=$Xn,tmp2,8,8            // forward Xload
  83         mux2    $X[$i]=$X[$i],0x44      } //;;
  84
  85 ___
  86         }
  87 else    {
  88         $code.=<<___;
  89 { .mii; and     tmp3=$c,$b
  90         dep     tmp1=tmp0,tmp4,8,8;;
  91         dep     $X[$i]=$X[$i],tmp1,16,16} //;;
  92 { .mmi; add     $e=$e,$K_00_19              // e+=K_00_19
  93         andcm   tmp1=$d,$b
  94         dep.z   tmp5=$a,5,27            };; // a<<5
  95 { .mmi; add     $e=$e,$X[$i]                // e+=Xupdate
  96         or      tmp4=tmp3,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
  97         extr.u  tmp1=$a,27,5            }   // a>>27
  98 { .mmi; xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
  99         xor     tmp3=$X[($j+8)%16],$X[($j+13)%16] // forward Xupdate
 100         nop.i   0                       };;
 101 { .mmi; add     $e=$e,tmp4                  // e+=F_00_19(b,c,d)
 102         xor     $Xn=$Xn,tmp3                // forward Xupdate
 103         shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
 104 { .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
 105         mux2    tmp6=$a,0x44            };; // see b in next iteration
 106 { .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
 107         shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
 108         mux2    $X[$i]=$X[$i],0x44      };;
 109
 110 ___
 111         }
 112 }
 113
 114 sub BODY_16_19 {
 115 local   *code=shift;
 116 my      ($i,$a,$b,$c,$d,$e)=@_;
 117 my      $j=$i+1;
 118 my      $Xn=@X[$j%16];
 119
 120 $code.=<<___;
 121 { .mib; add     $e=$e,$K_00_19              // e+=K_00_19
 122         dep.z   tmp5=$a,5,27            }   // a<<5
 123 { .mib; andcm   tmp1=$d,$b
 124         and     tmp0=$c,$b              };;
 125 { .mmi; add     $e=$e,$X[$i%16]             // e+=Xupdate
 126         or      tmp0=tmp0,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
 127         extr.u  tmp1=$a,27,5            }   // a>>27
 128 { .mmi; xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
 129         xor     tmp3=$X[($j+8)%16],$X[($j+13)%16]       // forward Xupdate
 130         nop.i   0                       };;
 131 { .mmi; add     $e=$e,tmp0                  // f+=F_00_19(b,c,d)
 132         xor     $Xn=$Xn,tmp3                // forward Xupdate
 133         shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
 134 { .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
 135         mux2    tmp6=$a,0x44            };; // see b in next iteration
 136 { .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
 137         shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
 138         nop.i   0                       };;
 139
 140 ___
 141 }
 142
 143 sub BODY_20_39 {
 144 local   *code=shift;
 145 my      ($i,$a,$b,$c,$d,$e,$Konst)=@_;
 146         $Konst = $K_20_39 if (!defined($Konst));
 147 my      $j=$i+1;
 148 my      $Xn=@X[$j%16];
 149
 150 if ($i<79) {
 151 $code.=<<___;
 152 { .mib; add     $e=$e,$Konst                // e+=K_XX_XX
 153         dep.z   tmp5=$a,5,27            }   // a<<5
 154 { .mib; xor     tmp0=$c,$b
 155         xor     $Xn=$Xn,$X[($j+2)%16]   };; // forward Xupdate
 156 { .mib; add     $e=$e,$X[$i%16]             // e+=Xupdate
 157         extr.u  tmp1=$a,27,5            }   // a>>27
 158 { .mib; xor     tmp0=tmp0,$d                // F_20_39(b,c,d)=b^c^d
 159         xor     $Xn=$Xn,$X[($j+8)%16]   };; // forward Xupdate
 160 { .mmi; add     $e=$e,tmp0                  // e+=F_20_39(b,c,d)
 161         xor     $Xn=$Xn,$X[($j+13)%16]      // forward Xupdate
 162         shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
 163 { .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
 164         mux2    tmp6=$a,0x44            };; // see b in next iteration
 165 { .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
 166         shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
 167         nop.i   0                       };;
 168
 169 ___
 170 }
 171 else {
 172 $code.=<<___;
 173 { .mib; add     $e=$e,$Konst                // e+=K_60_79
 174         dep.z   tmp5=$a,5,27            }   // a<<5
 175 { .mib; xor     tmp0=$c,$b
 176         add     $h1=$h1,$a              };; // wrap up
 177 { .mib; add     $e=$e,$X[$i%16]             // e+=Xupdate
 178         extr.u  tmp1=$a,27,5            }   // a>>27
 179 { .mib; xor     tmp0=tmp0,$d                // F_20_39(b,c,d)=b^c^d
 180         add     $h3=$h3,$c              };; // wrap up
 181 { .mmi; add     $e=$e,tmp0                  // e+=F_20_39(b,c,d)
 182         or      tmp1=tmp1,tmp5              // ROTATE(a,5)
 183         shrp    $b=tmp6,tmp6,2          };; // b=ROTATE(b,30) ;;?
 184 { .mmi; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
 185         add     tmp3=1,inp                  // used in unaligned codepath
 186         add     $h4=$h4,$d              };; // wrap up
 187
 188 ___
 189 }
 190 }
 191
 192 sub BODY_40_59 {
 193 local   *code=shift;
 194 my      ($i,$a,$b,$c,$d,$e)=@_;
 195 my      $j=$i+1;
 196 my      $Xn=@X[$j%16];
 197
 198 $code.=<<___;
 199 { .mib; add     $e=$e,$K_40_59              // e+=K_40_59
 200         dep.z   tmp5=$a,5,27            }   // a<<5
 201 { .mib; and     tmp1=$c,$d
 202         xor     tmp0=$c,$d              };;
 203 { .mmi; add     $e=$e,$X[$i%16]             // e+=Xupdate
 204         add     tmp5=tmp5,tmp1              // a<<5+(c&d)
 205         extr.u  tmp1=$a,27,5            }   // a>>27
 206 { .mmi; and     tmp0=tmp0,$b
 207         xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
 208         xor     tmp3=$X[($j+8)%16],$X[($j+13)%16] };;   // forward Xupdate
 209 { .mmi; add     $e=$e,tmp0                  // e+=b&(c^d)
 210         add     tmp5=tmp5,tmp1              // ROTATE(a,5)+(c&d)
 211         shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
 212 { .mmi; xor     $Xn=$Xn,tmp3
 213         mux2    tmp6=$a,0x44            };; // see b in next iteration
 214 { .mii; add     $e=$e,tmp5                  // e+=ROTATE(a,5)+(c&d)
 215         shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
 216         nop.i   0x0                     };;
 217
 218 ___
 219 }
 220 sub BODY_60_79  { &BODY_20_39(@_,$K_60_79); }
 221
 222 $code.=<<___;
 223 .text
 224
 225 tmp0=r8;
 226 tmp1=r9;
 227 tmp2=r10;
 228 tmp3=r11;
 229 ctx=r32;        // in0
 230 inp=r33;        // in1
 231
 232 // void sha1_block_data_order(SHA_CTX *c,const void *p,size_t num);
 233 .global sha1_block_data_order#
 234 .proc   sha1_block_data_order#
 235 .align  32
 236 sha1_block_data_order:
 237         .prologue
 238 { .mmi; alloc   tmp1=ar.pfs,3,14,0,0
 239         $ADDP   tmp0=4,ctx
 240         .save   ar.lc,r3
 241         mov     r3=ar.lc                }
 242 { .mmi; $ADDP   ctx=0,ctx
 243         $ADDP   inp=0,inp
 244         mov     r2=pr                   };;
 245 tmp4=in2;
 246 tmp5=loc12;
 247 tmp6=loc13;
 248         .body
 249 { .mlx; ld4     $h0=[ctx],8
 250         movl    $K_00_19=0x5a827999     }
 251 { .mlx; ld4     $h1=[tmp0],8
 252         movl    $K_20_39=0x6ed9eba1     };;
 253 { .mlx; ld4     $h2=[ctx],8
 254         movl    $K_40_59=0x8f1bbcdc     }
 255 { .mlx; ld4     $h3=[tmp0]
 256         movl    $K_60_79=0xca62c1d6     };;
 257 { .mmi; ld4     $h4=[ctx],-16
 258         add     in2=-1,in2                  // adjust num for ar.lc
 259         mov     ar.ec=1                 };;
 260 { .mmi; nop.m   0
 261         add     tmp3=1,inp
 262         mov     ar.lc=in2               };; // brp.loop.imp: too far
 263
 264 .Ldtop:
 265 { .mmi; mov     $A=$h0
 266         mov     $B=$h1
 267         mux2    tmp6=$h1,0x44           }
 268 { .mmi; mov     $C=$h2
 269         mov     $D=$h3
 270         mov     $E=$h4                  };;
 271
 272 ___
 273
 274 { my $i;
 275   my @V=($A,$B,$C,$D,$E);
 276
 277         for($i=0;$i<16;$i++)    { &BODY_00_15(\$code,$i,@V); unshift(@V,pop(@V)); }
 278         for(;$i<20;$i++)        { &BODY_16_19(\$code,$i,@V); unshift(@V,pop(@V)); }
 279         for(;$i<40;$i++)        { &BODY_20_39(\$code,$i,@V); unshift(@V,pop(@V)); }
 280         for(;$i<60;$i++)        { &BODY_40_59(\$code,$i,@V); unshift(@V,pop(@V)); }
 281         for(;$i<80;$i++)        { &BODY_60_79(\$code,$i,@V); unshift(@V,pop(@V)); }
 282
 283         (($V[0] eq $A) and ($V[4] eq $E)) or die;       # double-check
 284 }
 285
 286 $code.=<<___;
 287 { .mmb; add     $h0=$h0,$A
 288         add     $h2=$h2,$C
 289         br.ctop.dptk.many       .Ldtop  };;
 290 .Ldend:
 291 { .mmi; add     tmp0=4,ctx
 292         mov     ar.lc=r3                };;
 293 { .mmi; st4     [ctx]=$h0,8
 294         st4     [tmp0]=$h1,8            };;
 295 { .mmi; st4     [ctx]=$h2,8
 296         st4     [tmp0]=$h3              };;
 297 { .mib; st4     [ctx]=$h4,-16
 298         mov     pr=r2,0x1ffff
 299         br.ret.sptk.many        b0      };;
 300 .endp   sha1_block_data_order#
 301 stringz "SHA1 block transform for IA64, CRYPTOGAMS by <appro\@openssl.org>"
 302 ___
 303
 304 $output=shift and open STDOUT,">$output";
 305 print $code;