source: vbox/trunk/src/libs/openssl-3.0.1/crypto/sha/asm/sha1-ia64.pl@ 94081

#! /usr/bin/env perl
# Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

#
# ====================================================================
# Written by Andy Polyakov <[email protected]> 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/.
# ====================================================================
#
# Eternal question is what's wrong with compiler generated code? The
# trick is that it's possible to reduce the number of shifts required
# to perform rotations by maintaining copy of 32-bit value in upper
# bits of 64-bit register. Just follow mux2 and shrp instructions...
# Performance under big-endian OS such as HP-UX is 179MBps*1GHz, which
# is >50% better than HP C and >2x better than gcc.

$output = pop;

$code=<<___;
.ident  \"sha1-ia64.s, version 1.3\"
.ident  \"IA-64 ISA artwork by Andy Polyakov <appro\@fy.chalmers.se>\"
.explicit

___


if ($^O eq "hpux") {
    $ADDP="addp4";
    for (@ARGV) { $ADDP="add" if (/[\+DD|\-mlp]64/); }
} else { $ADDP="add"; }

#$human=1;
if ($human) {   # useful for visual code auditing...
        ($A,$B,$C,$D,$E)   = ("A","B","C","D","E");
        ($h0,$h1,$h2,$h3,$h4) = ("h0","h1","h2","h3","h4");
        ($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
            (   "K_00_19","K_20_39","K_40_59","K_60_79" );
        @X= (   "X0", "X1", "X2", "X3", "X4", "X5", "X6", "X7",
                "X8", "X9","X10","X11","X12","X13","X14","X15"  );
}
else {
        ($A,$B,$C,$D,$E)   =    ("loc0","loc1","loc2","loc3","loc4");
        ($h0,$h1,$h2,$h3,$h4) = ("loc5","loc6","loc7","loc8","loc9");
        ($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
            (   "r14", "r15", "loc10", "loc11"  );
        @X= (   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
                "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"  );
}

sub BODY_00_15 {
local   *code=shift;
my      ($i,$a,$b,$c,$d,$e)=@_;
my      $j=$i+1;
my      $Xn=@X[$j%16];

$code.=<<___ if ($i==0);
{ .mmi; ld1     $X[$i]=[inp],2              // MSB
        ld1     tmp2=[tmp3],2           };;
{ .mmi; ld1     tmp0=[inp],2
        ld1     tmp4=[tmp3],2               // LSB
        dep     $X[$i]=$X[$i],tmp2,8,8  };;
___
if ($i<15) {
        $code.=<<___;
{ .mmi; ld1     $Xn=[inp],2                 // forward Xload
        nop.m   0x0
        dep     tmp1=tmp0,tmp4,8,8      };;
{ .mmi; ld1     tmp2=[tmp3],2               // forward Xload
        and     tmp4=$c,$b
        dep     $X[$i]=$X[$i],tmp1,16,16} //;;
{ .mmi; add     $e=$e,$K_00_19              // e+=K_00_19
        andcm   tmp1=$d,$b
        dep.z   tmp5=$a,5,27            };; // a<<5
{ .mmi; add     $e=$e,$X[$i]                // e+=Xload
        or      tmp4=tmp4,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
        extr.u  tmp1=$a,27,5            };; // a>>27
{ .mmi; ld1     tmp0=[inp],2                // forward Xload
        add     $e=$e,tmp4                  // e+=F_00_19(b,c,d)
        shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
{ .mmi; ld1     tmp4=[tmp3],2               // forward Xload
        or      tmp5=tmp1,tmp5              // ROTATE(a,5)
        mux2    tmp6=$a,0x44            };; // see b in next iteration
{ .mii; add     $e=$e,tmp5                  // e+=ROTATE(a,5)
        dep     $Xn=$Xn,tmp2,8,8            // forward Xload
        mux2    $X[$i]=$X[$i],0x44      } //;;

___
        }
else    {
        $code.=<<___;
{ .mii; and     tmp3=$c,$b
        dep     tmp1=tmp0,tmp4,8,8;;
        dep     $X[$i]=$X[$i],tmp1,16,16} //;;
{ .mmi; add     $e=$e,$K_00_19              // e+=K_00_19
        andcm   tmp1=$d,$b
        dep.z   tmp5=$a,5,27            };; // a<<5
{ .mmi; add     $e=$e,$X[$i]                // e+=Xupdate
        or      tmp4=tmp3,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
        extr.u  tmp1=$a,27,5            }   // a>>27
{ .mmi; xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
        xor     tmp3=$X[($j+8)%16],$X[($j+13)%16] // forward Xupdate
        nop.i   0                       };;
{ .mmi; add     $e=$e,tmp4                  // e+=F_00_19(b,c,d)
        xor     $Xn=$Xn,tmp3                // forward Xupdate
        shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
{ .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
        mux2    tmp6=$a,0x44            };; // see b in next iteration
{ .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
        shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
        mux2    $X[$i]=$X[$i],0x44      };;

___
        }
}

sub BODY_16_19 {
local   *code=shift;
my      ($i,$a,$b,$c,$d,$e)=@_;
my      $j=$i+1;
my      $Xn=@X[$j%16];

$code.=<<___;
{ .mib; add     $e=$e,$K_00_19              // e+=K_00_19
        dep.z   tmp5=$a,5,27            }   // a<<5
{ .mib; andcm   tmp1=$d,$b
        and     tmp0=$c,$b              };;
{ .mmi; add     $e=$e,$X[$i%16]             // e+=Xupdate
        or      tmp0=tmp0,tmp1              // F_00_19(b,c,d)=(b&c)|(~b&d)
        extr.u  tmp1=$a,27,5            }   // a>>27
{ .mmi; xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
        xor     tmp3=$X[($j+8)%16],$X[($j+13)%16]       // forward Xupdate
        nop.i   0                       };;
{ .mmi; add     $e=$e,tmp0                  // f+=F_00_19(b,c,d)
        xor     $Xn=$Xn,tmp3                // forward Xupdate
        shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
{ .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
        mux2    tmp6=$a,0x44            };; // see b in next iteration
{ .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
        shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
        nop.i   0                       };;

___
}

sub BODY_20_39 {
local   *code=shift;
my      ($i,$a,$b,$c,$d,$e,$Konst)=@_;
        $Konst = $K_20_39 if (!defined($Konst));
my      $j=$i+1;
my      $Xn=@X[$j%16];

if ($i<79) {
$code.=<<___;
{ .mib; add     $e=$e,$Konst                // e+=K_XX_XX
        dep.z   tmp5=$a,5,27            }   // a<<5
{ .mib; xor     tmp0=$c,$b
        xor     $Xn=$Xn,$X[($j+2)%16]   };; // forward Xupdate
{ .mib; add     $e=$e,$X[$i%16]             // e+=Xupdate
        extr.u  tmp1=$a,27,5            }   // a>>27
{ .mib; xor     tmp0=tmp0,$d                // F_20_39(b,c,d)=b^c^d
        xor     $Xn=$Xn,$X[($j+8)%16]   };; // forward Xupdate
{ .mmi; add     $e=$e,tmp0                  // e+=F_20_39(b,c,d)
        xor     $Xn=$Xn,$X[($j+13)%16]      // forward Xupdate
        shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
{ .mmi; or      tmp1=tmp1,tmp5              // ROTATE(a,5)
        mux2    tmp6=$a,0x44            };; // see b in next iteration
{ .mii; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
        shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
        nop.i   0                       };;

___
}
else {
$code.=<<___;
{ .mib; add     $e=$e,$Konst                // e+=K_60_79
        dep.z   tmp5=$a,5,27            }   // a<<5
{ .mib; xor     tmp0=$c,$b
        add     $h1=$h1,$a              };; // wrap up
{ .mib; add     $e=$e,$X[$i%16]             // e+=Xupdate
        extr.u  tmp1=$a,27,5            }   // a>>27
{ .mib; xor     tmp0=tmp0,$d                // F_20_39(b,c,d)=b^c^d
        add     $h3=$h3,$c              };; // wrap up
{ .mmi; add     $e=$e,tmp0                  // e+=F_20_39(b,c,d)
        or      tmp1=tmp1,tmp5              // ROTATE(a,5)
        shrp    $b=tmp6,tmp6,2          };; // b=ROTATE(b,30) ;;?
{ .mmi; add     $e=$e,tmp1                  // e+=ROTATE(a,5)
        add     tmp3=1,inp                  // used in unaligned codepath
        add     $h4=$h4,$d              };; // wrap up

___
}
}

sub BODY_40_59 {
local   *code=shift;
my      ($i,$a,$b,$c,$d,$e)=@_;
my      $j=$i+1;
my      $Xn=@X[$j%16];

$code.=<<___;
{ .mib; add     $e=$e,$K_40_59              // e+=K_40_59
        dep.z   tmp5=$a,5,27            }   // a<<5
{ .mib; and     tmp1=$c,$d
        xor     tmp0=$c,$d              };;
{ .mmi; add     $e=$e,$X[$i%16]             // e+=Xupdate
        add     tmp5=tmp5,tmp1              // a<<5+(c&d)
        extr.u  tmp1=$a,27,5            }   // a>>27
{ .mmi; and     tmp0=tmp0,$b
        xor     $Xn=$Xn,$X[($j+2)%16]       // forward Xupdate
        xor     tmp3=$X[($j+8)%16],$X[($j+13)%16] };;   // forward Xupdate
{ .mmi; add     $e=$e,tmp0                  // e+=b&(c^d)
        add     tmp5=tmp5,tmp1              // ROTATE(a,5)+(c&d)
        shrp    $b=tmp6,tmp6,2          }   // b=ROTATE(b,30)
{ .mmi; xor     $Xn=$Xn,tmp3
        mux2    tmp6=$a,0x44            };; // see b in next iteration
{ .mii; add     $e=$e,tmp5                  // e+=ROTATE(a,5)+(c&d)
        shrp    $Xn=$Xn,$Xn,31              // ROTATE(x[0]^x[2]^x[8]^x[13],1)
        nop.i   0x0                     };;

___
}
sub BODY_60_79  { &BODY_20_39(@_,$K_60_79); }

$code.=<<___;
.text

tmp0=r8;
tmp1=r9;
tmp2=r10;
tmp3=r11;
ctx=r32;        // in0
inp=r33;        // in1

// void sha1_block_data_order(SHA_CTX *c,const void *p,size_t num);
.global sha1_block_data_order#
.proc   sha1_block_data_order#
.align  32
sha1_block_data_order:
        .prologue
{ .mmi; alloc   tmp1=ar.pfs,3,14,0,0
        $ADDP   tmp0=4,ctx
        .save   ar.lc,r3
        mov     r3=ar.lc                }
{ .mmi; $ADDP   ctx=0,ctx
        $ADDP   inp=0,inp
        mov     r2=pr                   };;
tmp4=in2;
tmp5=loc12;
tmp6=loc13;
        .body
{ .mlx; ld4     $h0=[ctx],8
        movl    $K_00_19=0x5a827999     }
{ .mlx; ld4     $h1=[tmp0],8
        movl    $K_20_39=0x6ed9eba1     };;
{ .mlx; ld4     $h2=[ctx],8
        movl    $K_40_59=0x8f1bbcdc     }
{ .mlx; ld4     $h3=[tmp0]
        movl    $K_60_79=0xca62c1d6     };;
{ .mmi; ld4     $h4=[ctx],-16
        add     in2=-1,in2                  // adjust num for ar.lc
        mov     ar.ec=1                 };;
{ .mmi; nop.m   0
        add     tmp3=1,inp
        mov     ar.lc=in2               };; // brp.loop.imp: too far

.Ldtop:
{ .mmi; mov     $A=$h0
        mov     $B=$h1
        mux2    tmp6=$h1,0x44           }
{ .mmi; mov     $C=$h2
        mov     $D=$h3
        mov     $E=$h4                  };;

___

{ my $i;
  my @V=($A,$B,$C,$D,$E);

        for($i=0;$i<16;$i++)    { &BODY_00_15(\$code,$i,@V); unshift(@V,pop(@V)); }
        for(;$i<20;$i++)        { &BODY_16_19(\$code,$i,@V); unshift(@V,pop(@V)); }
        for(;$i<40;$i++)        { &BODY_20_39(\$code,$i,@V); unshift(@V,pop(@V)); }
        for(;$i<60;$i++)        { &BODY_40_59(\$code,$i,@V); unshift(@V,pop(@V)); }
        for(;$i<80;$i++)        { &BODY_60_79(\$code,$i,@V); unshift(@V,pop(@V)); }

        (($V[0] eq $A) and ($V[4] eq $E)) or die;       # double-check
}

$code.=<<___;
{ .mmb; add     $h0=$h0,$A
        add     $h2=$h2,$C
        br.ctop.dptk.many       .Ldtop  };;
.Ldend:
{ .mmi; add     tmp0=4,ctx
        mov     ar.lc=r3                };;
{ .mmi; st4     [ctx]=$h0,8
        st4     [tmp0]=$h1,8            };;
{ .mmi; st4     [ctx]=$h2,8
        st4     [tmp0]=$h3              };;
{ .mib; st4     [ctx]=$h4,-16
        mov     pr=r2,0x1ffff
        br.ret.sptk.many        b0      };;
.endp   sha1_block_data_order#
stringz "SHA1 block transform for IA64, CRYPTOGAMS by <appro\@openssl.org>"
___

open STDOUT,">$output" if $output;
print $code;