perlasm: fix symptom-less bugs, missing semicolons and 'my' declarations.
[openssl.git] / 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;