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      1 #!/usr/bin/env perl
      2 #
      3 # ====================================================================
      4 # Written by Andy Polyakov <appro (at] 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 $code=<<___;
     18 .ident  \"sha1-ia64.s, version 1.2\"
     19 .ident  \"IA-64 ISA artwork by Andy Polyakov <appro\@fy.chalmers.se>\"
     20 .explicit
     21 
     22 ___
     23 
     24 
     25 if ($^O eq "hpux") {
     26     $ADDP="addp4";
     27     for (@ARGV) { $ADDP="add" if (/[\+DD|\-mlp]64/); }
     28 } else { $ADDP="add"; }
     29 for (@ARGV) {	$big_endian=1 if (/\-DB_ENDIAN/);
     30 		$big_endian=0 if (/\-DL_ENDIAN/);   }
     31 if (!defined($big_endian))
     32 	    {	$big_endian=(unpack('L',pack('N',1))==1);   }
     33 
     34 #$human=1;
     35 if ($human) {	# useful for visual code auditing...
     36 	($A,$B,$C,$D,$E,$T)   = ("A","B","C","D","E","T");
     37 	($h0,$h1,$h2,$h3,$h4) = ("h0","h1","h2","h3","h4");
     38 	($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
     39 	    (	"K_00_19","K_20_39","K_40_59","K_60_79"	);
     40 	@X= (	"X0", "X1", "X2", "X3", "X4", "X5", "X6", "X7",
     41 		"X8", "X9","X10","X11","X12","X13","X14","X15"	);
     42 }
     43 else {
     44 	($A,$B,$C,$D,$E,$T)   = ("loc0","loc1","loc2","loc3","loc4","loc5");
     45 	($h0,$h1,$h2,$h3,$h4) = ("loc6","loc7","loc8","loc9","loc10");
     46 	($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
     47 	    (	"r14", "r15", "loc11", "loc12"	);
     48 	@X= (	"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
     49 		"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"	);
     50 }
     51 
     52 sub BODY_00_15 {
     53 local	*code=shift;
     54 local	($i,$a,$b,$c,$d,$e,$f)=@_;
     55 
     56 $code.=<<___ if ($i==0);
     57 { .mmi;	ld1	$X[$i&0xf]=[inp],2	    // MSB
     58 	ld1	tmp2=[tmp3],2		};;
     59 { .mmi;	ld1	tmp0=[inp],2
     60 	ld1	tmp4=[tmp3],2		    // LSB
     61 	dep	$X[$i&0xf]=$X[$i&0xf],tmp2,8,8	};;
     62 ___
     63 if ($i<15) {
     64 	$code.=<<___;
     65 { .mmi;	ld1	$X[($i+1)&0xf]=[inp],2	    // +1
     66 	dep	tmp1=tmp0,tmp4,8,8	};;
     67 { .mmi;	ld1	tmp2=[tmp3],2		    // +1
     68 	and	tmp4=$c,$b
     69 	dep	$X[$i&0xf]=$X[$i&0xf],tmp1,16,16	} //;;
     70 { .mmi;	andcm	tmp1=$d,$b
     71 	add	tmp0=$e,$K_00_19
     72 	dep.z	tmp5=$a,5,27		};; // a<<5
     73 { .mmi;	or	tmp4=tmp4,tmp1		    // F_00_19(b,c,d)=(b&c)|(~b&d)
     74 	add	$f=tmp0,$X[$i&0xf]	    // f=xi+e+K_00_19
     75 	extr.u	tmp1=$a,27,5		};; // a>>27
     76 { .mmi;	ld1	tmp0=[inp],2		    // +1
     77 	add	$f=$f,tmp4		    // f+=F_00_19(b,c,d)
     78 	shrp	$b=tmp6,tmp6,2		}   // b=ROTATE(b,30)
     79 { .mmi;	ld1	tmp4=[tmp3],2		    // +1
     80 	or	tmp5=tmp1,tmp5		    // ROTATE(a,5)
     81 	mux2	tmp6=$a,0x44		};; // see b in next iteration
     82 { .mii;	add	$f=$f,tmp5		    // f+=ROTATE(a,5)
     83 	dep	$X[($i+1)&0xf]=$X[($i+1)&0xf],tmp2,8,8	// +1
     84 	mux2	$X[$i&0xf]=$X[$i&0xf],0x44	} //;;
     85 
     86 ___
     87 	}
     88 else	{
     89 	$code.=<<___;
     90 { .mii;	and	tmp3=$c,$b
     91 	dep	tmp1=tmp0,tmp4,8,8;;
     92 	dep	$X[$i&0xf]=$X[$i&0xf],tmp1,16,16	} //;;
     93 { .mmi;	andcm	tmp1=$d,$b
     94 	add	tmp0=$e,$K_00_19
     95 	dep.z	tmp5=$a,5,27		};; // a<<5
     96 { .mmi;	or	tmp4=tmp3,tmp1		    // F_00_19(b,c,d)=(b&c)|(~b&d)
     97 	add	$f=tmp0,$X[$i&0xf]	    // f=xi+e+K_00_19
     98 	extr.u	tmp1=$a,27,5		}   // a>>27
     99 { .mmi;	xor	tmp2=$X[($i+0+1)&0xf],$X[($i+2+1)&0xf]	// +1
    100 	xor	tmp3=$X[($i+8+1)&0xf],$X[($i+13+1)&0xf] // +1
    101 	nop.i	0			};;
    102 { .mmi;	add	$f=$f,tmp4		    // f+=F_00_19(b,c,d)
    103 	xor	tmp2=tmp2,tmp3		    // +1
    104 	shrp	$b=tmp6,tmp6,2		}   // b=ROTATE(b,30)
    105 { .mmi; or	tmp1=tmp1,tmp5		    // ROTATE(a,5)
    106 	mux2	tmp6=$a,0x44		};; // see b in next iteration
    107 { .mii;	add	$f=$f,tmp1		    // f+=ROTATE(a,5)
    108 	shrp	$e=tmp2,tmp2,31		    // f+1=ROTATE(x[0]^x[2]^x[8]^x[13],1)
    109 	mux2	$X[$i&0xf]=$X[$i&0xf],0x44  };;
    110 
    111 ___
    112 	}
    113 }
    114 
    115 sub BODY_16_19 {
    116 local	*code=shift;
    117 local	($i,$a,$b,$c,$d,$e,$f)=@_;
    118 
    119 $code.=<<___;
    120 { .mmi;	mov	$X[$i&0xf]=$f		    // Xupdate
    121 	and	tmp0=$c,$b
    122 	dep.z	tmp5=$a,5,27		}   // a<<5
    123 { .mmi;	andcm	tmp1=$d,$b
    124 	add	tmp4=$e,$K_00_19	};;
    125 { .mmi;	or	tmp0=tmp0,tmp1		    // F_00_19(b,c,d)=(b&c)|(~b&d)
    126 	add	$f=$f,tmp4		    // f+=e+K_00_19
    127 	extr.u	tmp1=$a,27,5		}   // a>>27
    128 { .mmi;	xor	tmp2=$X[($i+0+1)&0xf],$X[($i+2+1)&0xf]	// +1
    129 	xor	tmp3=$X[($i+8+1)&0xf],$X[($i+13+1)&0xf]	// +1
    130 	nop.i	0			};;
    131 { .mmi;	add	$f=$f,tmp0		    // f+=F_00_19(b,c,d)
    132 	xor	tmp2=tmp2,tmp3		    // +1
    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	$f=$f,tmp1		    // f+=ROTATE(a,5)
    137 	shrp	$e=tmp2,tmp2,31		    // f+1=ROTATE(x[0]^x[2]^x[8]^x[13],1)
    138 	nop.i	0			};;
    139 
    140 ___
    141 }
    142 
    143 sub BODY_20_39 {
    144 local	*code=shift;
    145 local	($i,$a,$b,$c,$d,$e,$f,$Konst)=@_;
    146 	$Konst = $K_20_39 if (!defined($Konst));
    147 
    148 if ($i<79) {
    149 $code.=<<___;
    150 { .mib;	mov	$X[$i&0xf]=$f		    // Xupdate
    151 	dep.z	tmp5=$a,5,27		}   // a<<5
    152 { .mib;	xor	tmp0=$c,$b
    153 	add	tmp4=$e,$Konst		};;
    154 { .mmi;	xor	tmp0=tmp0,$d		    // F_20_39(b,c,d)=b^c^d
    155 	add	$f=$f,tmp4		    // f+=e+K_20_39
    156 	extr.u	tmp1=$a,27,5		}   // a>>27
    157 { .mmi;	xor	tmp2=$X[($i+0+1)&0xf],$X[($i+2+1)&0xf]	// +1
    158 	xor	tmp3=$X[($i+8+1)&0xf],$X[($i+13+1)&0xf]	// +1
    159 	nop.i	0			};;
    160 { .mmi;	add	$f=$f,tmp0		    // f+=F_20_39(b,c,d)
    161 	xor	tmp2=tmp2,tmp3		    // +1
    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	$f=$f,tmp1		    // f+=ROTATE(a,5)
    166 	shrp	$e=tmp2,tmp2,31		    // f+1=ROTATE(x[0]^x[2]^x[8]^x[13],1)
    167 	nop.i	0			};;
    168 
    169 ___
    170 }
    171 else {
    172 $code.=<<___;
    173 { .mib;	mov	$X[$i&0xf]=$f		    // Xupdate
    174 	dep.z	tmp5=$a,5,27		}   // a<<5
    175 { .mib;	xor	tmp0=$c,$b
    176 	add	tmp4=$e,$Konst		};;
    177 { .mib;	xor	tmp0=tmp0,$d		    // F_20_39(b,c,d)=b^c^d
    178 	extr.u	tmp1=$a,27,5		}   // a>>27
    179 { .mib;	add	$f=$f,tmp4		    // f+=e+K_20_39
    180 	add	$h1=$h1,$a		};; // wrap up
    181 { .mmi;	add	$f=$f,tmp0		    // f+=F_20_39(b,c,d)
    182 	shrp	$b=tmp6,tmp6,2		}   // b=ROTATE(b,30) ;;?
    183 { .mmi;	or	tmp1=tmp1,tmp5		    // ROTATE(a,5)
    184 	add	$h3=$h3,$c		};; // wrap up
    185 { .mib;	add	tmp3=1,inp		    // used in unaligned codepath
    186 	add	$f=$f,tmp1		}   // f+=ROTATE(a,5)
    187 { .mib;	add	$h2=$h2,$b		    // wrap up
    188 	add	$h4=$h4,$d		};; // wrap up
    189 
    190 ___
    191 }
    192 }
    193 
    194 sub BODY_40_59 {
    195 local	*code=shift;
    196 local	($i,$a,$b,$c,$d,$e,$f)=@_;
    197 
    198 $code.=<<___;
    199 { .mmi;	mov	$X[$i&0xf]=$f		    // Xupdate
    200 	and	tmp0=$c,$b
    201 	dep.z	tmp5=$a,5,27		}   // a<<5
    202 { .mmi;	and	tmp1=$d,$b
    203 	add	tmp4=$e,$K_40_59	};;
    204 { .mmi;	or	tmp0=tmp0,tmp1		    // (b&c)|(b&d)
    205 	add	$f=$f,tmp4		    // f+=e+K_40_59
    206 	extr.u	tmp1=$a,27,5		}   // a>>27
    207 { .mmi;	and	tmp4=$c,$d
    208 	xor	tmp2=$X[($i+0+1)&0xf],$X[($i+2+1)&0xf]	// +1
    209 	xor	tmp3=$X[($i+8+1)&0xf],$X[($i+13+1)&0xf]	// +1
    210 	};;
    211 { .mmi;	or	tmp1=tmp1,tmp5		    // ROTATE(a,5)
    212 	xor	tmp2=tmp2,tmp3		    // +1
    213 	shrp	$b=tmp6,tmp6,2		}   // b=ROTATE(b,30)
    214 { .mmi;	or	tmp0=tmp0,tmp4		    // F_40_59(b,c,d)=(b&c)|(b&d)|(c&d)
    215 	mux2	tmp6=$a,0x44		};; // see b in next iteration
    216 { .mii;	add	$f=$f,tmp0		    // f+=F_40_59(b,c,d)
    217 	shrp	$e=tmp2,tmp2,31;;	    // f+1=ROTATE(x[0]^x[2]^x[8]^x[13],1)
    218 	add	$f=$f,tmp1		};; // f+=ROTATE(a,5)
    219 
    220 ___
    221 }
    222 sub BODY_60_79	{ &BODY_20_39(@_,$K_60_79); }
    223 
    224 $code.=<<___;
    225 .text
    226 
    227 tmp0=r8;
    228 tmp1=r9;
    229 tmp2=r10;
    230 tmp3=r11;
    231 ctx=r32;	// in0
    232 inp=r33;	// in1
    233 
    234 // void sha1_block_data_order(SHA_CTX *c,const void *p,size_t num);
    235 .global	sha1_block_data_order#
    236 .proc	sha1_block_data_order#
    237 .align	32
    238 sha1_block_data_order:
    239 	.prologue
    240 { .mmi;	alloc	tmp1=ar.pfs,3,15,0,0
    241 	$ADDP	tmp0=4,ctx
    242 	.save	ar.lc,r3
    243 	mov	r3=ar.lc		}
    244 { .mmi;	$ADDP	ctx=0,ctx
    245 	$ADDP	inp=0,inp
    246 	mov	r2=pr			};;
    247 tmp4=in2;
    248 tmp5=loc13;
    249 tmp6=loc14;
    250 	.body
    251 { .mlx;	ld4	$h0=[ctx],8
    252 	movl	$K_00_19=0x5a827999	}
    253 { .mlx;	ld4	$h1=[tmp0],8
    254 	movl	$K_20_39=0x6ed9eba1	};;
    255 { .mlx;	ld4	$h2=[ctx],8
    256 	movl	$K_40_59=0x8f1bbcdc	}
    257 { .mlx;	ld4	$h3=[tmp0]
    258 	movl	$K_60_79=0xca62c1d6	};;
    259 { .mmi;	ld4	$h4=[ctx],-16
    260 	add	in2=-1,in2		    // adjust num for ar.lc
    261 	mov	ar.ec=1			};;
    262 { .mmi;	nop.m	0
    263 	add	tmp3=1,inp
    264 	mov	ar.lc=in2		};; // brp.loop.imp: too far
    265 
    266 .Ldtop:
    267 { .mmi;	mov	$A=$h0
    268 	mov	$B=$h1
    269 	mux2	tmp6=$h1,0x44		}
    270 { .mmi;	mov	$C=$h2
    271 	mov	$D=$h3
    272 	mov	$E=$h4			};;
    273 
    274 ___
    275 
    276 { my $i,@V=($A,$B,$C,$D,$E,$T);
    277 
    278 	for($i=0;$i<16;$i++)	{ &BODY_00_15(\$code,$i,@V); unshift(@V,pop(@V)); }
    279 	for(;$i<20;$i++)	{ &BODY_16_19(\$code,$i,@V); unshift(@V,pop(@V)); }
    280 	for(;$i<40;$i++)	{ &BODY_20_39(\$code,$i,@V); unshift(@V,pop(@V)); }
    281 	for(;$i<60;$i++)	{ &BODY_40_59(\$code,$i,@V); unshift(@V,pop(@V)); }
    282 	for(;$i<80;$i++)	{ &BODY_60_79(\$code,$i,@V); unshift(@V,pop(@V)); }
    283 
    284 	(($V[5] eq $D) and ($V[0] eq $E)) or die;	# double-check
    285 }
    286 
    287 $code.=<<___;
    288 { .mmb;	add	$h0=$h0,$E
    289 	nop.m	0
    290 	br.ctop.dptk.many	.Ldtop	};;
    291 .Ldend:
    292 { .mmi;	add	tmp0=4,ctx
    293 	mov	ar.lc=r3		};;
    294 { .mmi;	st4	[ctx]=$h0,8
    295 	st4	[tmp0]=$h1,8		};;
    296 { .mmi;	st4	[ctx]=$h2,8
    297 	st4	[tmp0]=$h3		};;
    298 { .mib;	st4	[ctx]=$h4,-16
    299 	mov	pr=r2,0x1ffff
    300 	br.ret.sptk.many	b0	};;
    301 .endp	sha1_block_data_order#
    302 stringz	"SHA1 block transform for IA64, CRYPTOGAMS by <appro\@openssl.org>"
    303 ___
    304 
    305 $output=shift and open STDOUT,">$output";
    306 print $code;
    307