Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | # December 2007 |
| 11 | |
| 12 | # The reason for undertaken effort is basically following. Even though |
| 13 | # Power 6 CPU operates at incredible 4.7GHz clock frequency, its PKI |
| 14 | # performance was observed to be less than impressive, essentially as |
| 15 | # fast as 1.8GHz PPC970, or 2.6 times(!) slower than one would hope. |
| 16 | # Well, it's not surprising that IBM had to make some sacrifices to |
| 17 | # boost the clock frequency that much, but no overall improvement? |
| 18 | # Having observed how much difference did switching to FPU make on |
| 19 | # UltraSPARC, playing same stunt on Power 6 appeared appropriate... |
| 20 | # Unfortunately the resulting performance improvement is not as |
| 21 | # impressive, ~30%, and in absolute terms is still very far from what |
| 22 | # one would expect from 4.7GHz CPU. There is a chance that I'm doing |
| 23 | # something wrong, but in the lack of assembler level micro-profiling |
| 24 | # data or at least decent platform guide I can't tell... Or better |
| 25 | # results might be achieved with VMX... Anyway, this module provides |
| 26 | # *worse* performance on other PowerPC implementations, ~40-15% slower |
| 27 | # on PPC970 depending on key length and ~40% slower on Power 5 for all |
| 28 | # key lengths. As it's obviously inappropriate as "best all-round" |
| 29 | # alternative, it has to be complemented with run-time CPU family |
| 30 | # detection. Oh! It should also be noted that unlike other PowerPC |
| 31 | # implementation IALU ppc-mont.pl module performs *suboptimaly* on |
| 32 | # >=1024-bit key lengths on Power 6. It should also be noted that |
| 33 | # *everything* said so far applies to 64-bit builds! As far as 32-bit |
| 34 | # application executed on 64-bit CPU goes, this module is likely to |
| 35 | # become preferred choice, because it's easy to adapt it for such |
| 36 | # case and *is* faster than 32-bit ppc-mont.pl on *all* processors. |
| 37 | |
| 38 | # February 2008 |
| 39 | |
| 40 | # Micro-profiling assisted optimization results in ~15% improvement |
| 41 | # over original ppc64-mont.pl version, or overall ~50% improvement |
| 42 | # over ppc.pl module on Power 6. If compared to ppc-mont.pl on same |
| 43 | # Power 6 CPU, this module is 5-150% faster depending on key length, |
| 44 | # [hereafter] more for longer keys. But if compared to ppc-mont.pl |
| 45 | # on 1.8GHz PPC970, it's only 5-55% faster. Still far from impressive |
| 46 | # in absolute terms, but it's apparently the way Power 6 is... |
| 47 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 48 | $flavour = shift; |
| 49 | |
| 50 | if ($flavour =~ /32/) { |
| 51 | $SIZE_T=4; |
| 52 | $RZONE= 224; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 53 | $FRAME= $SIZE_T*12+8*12; |
| 54 | $fname= "bn_mul_mont_ppc64"; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 55 | |
| 56 | $STUX= "stwux"; # store indexed and update |
| 57 | $PUSH= "stw"; |
| 58 | $POP= "lwz"; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 59 | die "not implemented yet"; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 60 | } elsif ($flavour =~ /64/) { |
| 61 | $SIZE_T=8; |
| 62 | $RZONE= 288; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 63 | $FRAME= $SIZE_T*12+8*12; |
| 64 | $fname= "bn_mul_mont"; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 65 | |
| 66 | # same as above, but 64-bit mnemonics... |
| 67 | $STUX= "stdux"; # store indexed and update |
| 68 | $PUSH= "std"; |
| 69 | $POP= "ld"; |
| 70 | } else { die "nonsense $flavour"; } |
| 71 | |
| 72 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 73 | ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or |
| 74 | ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or |
| 75 | die "can't locate ppc-xlate.pl"; |
| 76 | |
| 77 | open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!"; |
| 78 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 79 | $FRAME=($FRAME+63)&~63; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 80 | $TRANSFER=16*8; |
| 81 | |
| 82 | $carry="r0"; |
| 83 | $sp="r1"; |
| 84 | $toc="r2"; |
| 85 | $rp="r3"; $ovf="r3"; |
| 86 | $ap="r4"; |
| 87 | $bp="r5"; |
| 88 | $np="r6"; |
| 89 | $n0="r7"; |
| 90 | $num="r8"; |
| 91 | $rp="r9"; # $rp is reassigned |
| 92 | $tp="r10"; |
| 93 | $j="r11"; |
| 94 | $i="r12"; |
| 95 | # non-volatile registers |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 96 | $nap_d="r14"; # interleaved ap and np in double format |
| 97 | $a0="r15"; # ap[0] |
| 98 | $t0="r16"; # temporary registers |
| 99 | $t1="r17"; |
| 100 | $t2="r18"; |
| 101 | $t3="r19"; |
| 102 | $t4="r20"; |
| 103 | $t5="r21"; |
| 104 | $t6="r22"; |
| 105 | $t7="r23"; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 106 | |
| 107 | # PPC offers enough register bank capacity to unroll inner loops twice |
| 108 | # |
| 109 | # ..A3A2A1A0 |
| 110 | # dcba |
| 111 | # ----------- |
| 112 | # A0a |
| 113 | # A0b |
| 114 | # A0c |
| 115 | # A0d |
| 116 | # A1a |
| 117 | # A1b |
| 118 | # A1c |
| 119 | # A1d |
| 120 | # A2a |
| 121 | # A2b |
| 122 | # A2c |
| 123 | # A2d |
| 124 | # A3a |
| 125 | # A3b |
| 126 | # A3c |
| 127 | # A3d |
| 128 | # ..a |
| 129 | # ..b |
| 130 | # |
| 131 | $ba="f0"; $bb="f1"; $bc="f2"; $bd="f3"; |
| 132 | $na="f4"; $nb="f5"; $nc="f6"; $nd="f7"; |
| 133 | $dota="f8"; $dotb="f9"; |
| 134 | $A0="f10"; $A1="f11"; $A2="f12"; $A3="f13"; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 135 | $N0="f14"; $N1="f15"; $N2="f16"; $N3="f17"; |
| 136 | $T0a="f18"; $T0b="f19"; |
| 137 | $T1a="f20"; $T1b="f21"; |
| 138 | $T2a="f22"; $T2b="f23"; |
| 139 | $T3a="f24"; $T3b="f25"; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 140 | |
| 141 | # sp----------->+-------------------------------+ |
| 142 | # | saved sp | |
| 143 | # +-------------------------------+ |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 144 | # | | |
| 145 | # +-------------------------------+ |
| 146 | # | 10 saved gpr, r14-r23 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 147 | # . . |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 148 | # . . |
| 149 | # +12*size_t +-------------------------------+ |
| 150 | # | 12 saved fpr, f14-f25 | |
| 151 | # . . |
| 152 | # . . |
| 153 | # +12*8 +-------------------------------+ |
| 154 | # | padding to 64 byte boundary | |
| 155 | # . . |
| 156 | # +X +-------------------------------+ |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 157 | # | 16 gpr<->fpr transfer zone | |
| 158 | # . . |
| 159 | # . . |
| 160 | # +16*8 +-------------------------------+ |
| 161 | # | __int64 tmp[-1] | |
| 162 | # +-------------------------------+ |
| 163 | # | __int64 tmp[num] | |
| 164 | # . . |
| 165 | # . . |
| 166 | # . . |
| 167 | # +(num+1)*8 +-------------------------------+ |
| 168 | # | padding to 64 byte boundary | |
| 169 | # . . |
| 170 | # +X +-------------------------------+ |
| 171 | # | double nap_d[4*num] | |
| 172 | # . . |
| 173 | # . . |
| 174 | # . . |
| 175 | # +-------------------------------+ |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 176 | |
| 177 | $code=<<___; |
| 178 | .machine "any" |
| 179 | .text |
| 180 | |
| 181 | .globl .$fname |
| 182 | .align 5 |
| 183 | .$fname: |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 184 | cmpwi $num,4 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 185 | mr $rp,r3 ; $rp is reassigned |
| 186 | li r3,0 ; possible "not handled" return code |
| 187 | bltlr- |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 188 | andi. r0,$num,1 ; $num has to be even |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 189 | bnelr- |
| 190 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 191 | slwi $num,$num,3 ; num*=8 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 192 | li $i,-4096 |
| 193 | slwi $tp,$num,2 ; place for {an}p_{lh}[num], i.e. 4*num |
| 194 | add $tp,$tp,$num ; place for tp[num+1] |
| 195 | addi $tp,$tp,`$FRAME+$TRANSFER+8+64+$RZONE` |
| 196 | subf $tp,$tp,$sp ; $sp-$tp |
| 197 | and $tp,$tp,$i ; minimize TLB usage |
| 198 | subf $tp,$sp,$tp ; $tp-$sp |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 199 | $STUX $sp,$sp,$tp ; alloca |
| 200 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 201 | $PUSH r14,`2*$SIZE_T`($sp) |
| 202 | $PUSH r15,`3*$SIZE_T`($sp) |
| 203 | $PUSH r16,`4*$SIZE_T`($sp) |
| 204 | $PUSH r17,`5*$SIZE_T`($sp) |
| 205 | $PUSH r18,`6*$SIZE_T`($sp) |
| 206 | $PUSH r19,`7*$SIZE_T`($sp) |
| 207 | $PUSH r20,`8*$SIZE_T`($sp) |
| 208 | $PUSH r21,`9*$SIZE_T`($sp) |
| 209 | $PUSH r22,`10*$SIZE_T`($sp) |
| 210 | $PUSH r23,`11*$SIZE_T`($sp) |
| 211 | stfd f14,`12*$SIZE_T+0`($sp) |
| 212 | stfd f15,`12*$SIZE_T+8`($sp) |
| 213 | stfd f16,`12*$SIZE_T+16`($sp) |
| 214 | stfd f17,`12*$SIZE_T+24`($sp) |
| 215 | stfd f18,`12*$SIZE_T+32`($sp) |
| 216 | stfd f19,`12*$SIZE_T+40`($sp) |
| 217 | stfd f20,`12*$SIZE_T+48`($sp) |
| 218 | stfd f21,`12*$SIZE_T+56`($sp) |
| 219 | stfd f22,`12*$SIZE_T+64`($sp) |
| 220 | stfd f23,`12*$SIZE_T+72`($sp) |
| 221 | stfd f24,`12*$SIZE_T+80`($sp) |
| 222 | stfd f25,`12*$SIZE_T+88`($sp) |
| 223 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 224 | ld $a0,0($ap) ; pull ap[0] value |
| 225 | ld $n0,0($n0) ; pull n0[0] value |
| 226 | ld $t3,0($bp) ; bp[0] |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 227 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 228 | addi $tp,$sp,`$FRAME+$TRANSFER+8+64` |
| 229 | li $i,-64 |
| 230 | add $nap_d,$tp,$num |
| 231 | and $nap_d,$nap_d,$i ; align to 64 bytes |
| 232 | |
| 233 | mulld $t7,$a0,$t3 ; ap[0]*bp[0] |
| 234 | ; nap_d is off by 1, because it's used with stfdu/lfdu |
| 235 | addi $nap_d,$nap_d,-8 |
| 236 | srwi $j,$num,`3+1` ; counter register, num/2 |
| 237 | mulld $t7,$t7,$n0 ; tp[0]*n0 |
| 238 | addi $j,$j,-1 |
| 239 | addi $tp,$sp,`$FRAME+$TRANSFER-8` |
| 240 | li $carry,0 |
| 241 | mtctr $j |
| 242 | |
| 243 | ; transfer bp[0] to FPU as 4x16-bit values |
| 244 | extrdi $t0,$t3,16,48 |
| 245 | extrdi $t1,$t3,16,32 |
| 246 | extrdi $t2,$t3,16,16 |
| 247 | extrdi $t3,$t3,16,0 |
| 248 | std $t0,`$FRAME+0`($sp) |
| 249 | std $t1,`$FRAME+8`($sp) |
| 250 | std $t2,`$FRAME+16`($sp) |
| 251 | std $t3,`$FRAME+24`($sp) |
| 252 | ; transfer (ap[0]*bp[0])*n0 to FPU as 4x16-bit values |
| 253 | extrdi $t4,$t7,16,48 |
| 254 | extrdi $t5,$t7,16,32 |
| 255 | extrdi $t6,$t7,16,16 |
| 256 | extrdi $t7,$t7,16,0 |
| 257 | std $t4,`$FRAME+32`($sp) |
| 258 | std $t5,`$FRAME+40`($sp) |
| 259 | std $t6,`$FRAME+48`($sp) |
| 260 | std $t7,`$FRAME+56`($sp) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 261 | lwz $t0,4($ap) ; load a[j] as 32-bit word pair |
| 262 | lwz $t1,0($ap) |
| 263 | lwz $t2,12($ap) ; load a[j+1] as 32-bit word pair |
| 264 | lwz $t3,8($ap) |
| 265 | lwz $t4,4($np) ; load n[j] as 32-bit word pair |
| 266 | lwz $t5,0($np) |
| 267 | lwz $t6,12($np) ; load n[j+1] as 32-bit word pair |
| 268 | lwz $t7,8($np) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 269 | lfd $ba,`$FRAME+0`($sp) |
| 270 | lfd $bb,`$FRAME+8`($sp) |
| 271 | lfd $bc,`$FRAME+16`($sp) |
| 272 | lfd $bd,`$FRAME+24`($sp) |
| 273 | lfd $na,`$FRAME+32`($sp) |
| 274 | lfd $nb,`$FRAME+40`($sp) |
| 275 | lfd $nc,`$FRAME+48`($sp) |
| 276 | lfd $nd,`$FRAME+56`($sp) |
| 277 | std $t0,`$FRAME+64`($sp) |
| 278 | std $t1,`$FRAME+72`($sp) |
| 279 | std $t2,`$FRAME+80`($sp) |
| 280 | std $t3,`$FRAME+88`($sp) |
| 281 | std $t4,`$FRAME+96`($sp) |
| 282 | std $t5,`$FRAME+104`($sp) |
| 283 | std $t6,`$FRAME+112`($sp) |
| 284 | std $t7,`$FRAME+120`($sp) |
| 285 | fcfid $ba,$ba |
| 286 | fcfid $bb,$bb |
| 287 | fcfid $bc,$bc |
| 288 | fcfid $bd,$bd |
| 289 | fcfid $na,$na |
| 290 | fcfid $nb,$nb |
| 291 | fcfid $nc,$nc |
| 292 | fcfid $nd,$nd |
| 293 | |
| 294 | lfd $A0,`$FRAME+64`($sp) |
| 295 | lfd $A1,`$FRAME+72`($sp) |
| 296 | lfd $A2,`$FRAME+80`($sp) |
| 297 | lfd $A3,`$FRAME+88`($sp) |
| 298 | lfd $N0,`$FRAME+96`($sp) |
| 299 | lfd $N1,`$FRAME+104`($sp) |
| 300 | lfd $N2,`$FRAME+112`($sp) |
| 301 | lfd $N3,`$FRAME+120`($sp) |
| 302 | fcfid $A0,$A0 |
| 303 | fcfid $A1,$A1 |
| 304 | fcfid $A2,$A2 |
| 305 | fcfid $A3,$A3 |
| 306 | fcfid $N0,$N0 |
| 307 | fcfid $N1,$N1 |
| 308 | fcfid $N2,$N2 |
| 309 | fcfid $N3,$N3 |
| 310 | addi $ap,$ap,16 |
| 311 | addi $np,$np,16 |
| 312 | |
| 313 | fmul $T1a,$A1,$ba |
| 314 | fmul $T1b,$A1,$bb |
| 315 | stfd $A0,8($nap_d) ; save a[j] in double format |
| 316 | stfd $A1,16($nap_d) |
| 317 | fmul $T2a,$A2,$ba |
| 318 | fmul $T2b,$A2,$bb |
| 319 | stfd $A2,24($nap_d) ; save a[j+1] in double format |
| 320 | stfd $A3,32($nap_d) |
| 321 | fmul $T3a,$A3,$ba |
| 322 | fmul $T3b,$A3,$bb |
| 323 | stfd $N0,40($nap_d) ; save n[j] in double format |
| 324 | stfd $N1,48($nap_d) |
| 325 | fmul $T0a,$A0,$ba |
| 326 | fmul $T0b,$A0,$bb |
| 327 | stfd $N2,56($nap_d) ; save n[j+1] in double format |
| 328 | stfdu $N3,64($nap_d) |
| 329 | |
| 330 | fmadd $T1a,$A0,$bc,$T1a |
| 331 | fmadd $T1b,$A0,$bd,$T1b |
| 332 | fmadd $T2a,$A1,$bc,$T2a |
| 333 | fmadd $T2b,$A1,$bd,$T2b |
| 334 | fmadd $T3a,$A2,$bc,$T3a |
| 335 | fmadd $T3b,$A2,$bd,$T3b |
| 336 | fmul $dota,$A3,$bc |
| 337 | fmul $dotb,$A3,$bd |
| 338 | |
| 339 | fmadd $T1a,$N1,$na,$T1a |
| 340 | fmadd $T1b,$N1,$nb,$T1b |
| 341 | fmadd $T2a,$N2,$na,$T2a |
| 342 | fmadd $T2b,$N2,$nb,$T2b |
| 343 | fmadd $T3a,$N3,$na,$T3a |
| 344 | fmadd $T3b,$N3,$nb,$T3b |
| 345 | fmadd $T0a,$N0,$na,$T0a |
| 346 | fmadd $T0b,$N0,$nb,$T0b |
| 347 | |
| 348 | fmadd $T1a,$N0,$nc,$T1a |
| 349 | fmadd $T1b,$N0,$nd,$T1b |
| 350 | fmadd $T2a,$N1,$nc,$T2a |
| 351 | fmadd $T2b,$N1,$nd,$T2b |
| 352 | fmadd $T3a,$N2,$nc,$T3a |
| 353 | fmadd $T3b,$N2,$nd,$T3b |
| 354 | fmadd $dota,$N3,$nc,$dota |
| 355 | fmadd $dotb,$N3,$nd,$dotb |
| 356 | |
| 357 | fctid $T0a,$T0a |
| 358 | fctid $T0b,$T0b |
| 359 | fctid $T1a,$T1a |
| 360 | fctid $T1b,$T1b |
| 361 | fctid $T2a,$T2a |
| 362 | fctid $T2b,$T2b |
| 363 | fctid $T3a,$T3a |
| 364 | fctid $T3b,$T3b |
| 365 | |
| 366 | stfd $T0a,`$FRAME+0`($sp) |
| 367 | stfd $T0b,`$FRAME+8`($sp) |
| 368 | stfd $T1a,`$FRAME+16`($sp) |
| 369 | stfd $T1b,`$FRAME+24`($sp) |
| 370 | stfd $T2a,`$FRAME+32`($sp) |
| 371 | stfd $T2b,`$FRAME+40`($sp) |
| 372 | stfd $T3a,`$FRAME+48`($sp) |
| 373 | stfd $T3b,`$FRAME+56`($sp) |
| 374 | |
| 375 | .align 5 |
| 376 | L1st: |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 377 | lwz $t0,4($ap) ; load a[j] as 32-bit word pair |
| 378 | lwz $t1,0($ap) |
| 379 | lwz $t2,12($ap) ; load a[j+1] as 32-bit word pair |
| 380 | lwz $t3,8($ap) |
| 381 | lwz $t4,4($np) ; load n[j] as 32-bit word pair |
| 382 | lwz $t5,0($np) |
| 383 | lwz $t6,12($np) ; load n[j+1] as 32-bit word pair |
| 384 | lwz $t7,8($np) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 385 | std $t0,`$FRAME+64`($sp) |
| 386 | std $t1,`$FRAME+72`($sp) |
| 387 | std $t2,`$FRAME+80`($sp) |
| 388 | std $t3,`$FRAME+88`($sp) |
| 389 | std $t4,`$FRAME+96`($sp) |
| 390 | std $t5,`$FRAME+104`($sp) |
| 391 | std $t6,`$FRAME+112`($sp) |
| 392 | std $t7,`$FRAME+120`($sp) |
| 393 | ld $t0,`$FRAME+0`($sp) |
| 394 | ld $t1,`$FRAME+8`($sp) |
| 395 | ld $t2,`$FRAME+16`($sp) |
| 396 | ld $t3,`$FRAME+24`($sp) |
| 397 | ld $t4,`$FRAME+32`($sp) |
| 398 | ld $t5,`$FRAME+40`($sp) |
| 399 | ld $t6,`$FRAME+48`($sp) |
| 400 | ld $t7,`$FRAME+56`($sp) |
| 401 | lfd $A0,`$FRAME+64`($sp) |
| 402 | lfd $A1,`$FRAME+72`($sp) |
| 403 | lfd $A2,`$FRAME+80`($sp) |
| 404 | lfd $A3,`$FRAME+88`($sp) |
| 405 | lfd $N0,`$FRAME+96`($sp) |
| 406 | lfd $N1,`$FRAME+104`($sp) |
| 407 | lfd $N2,`$FRAME+112`($sp) |
| 408 | lfd $N3,`$FRAME+120`($sp) |
| 409 | fcfid $A0,$A0 |
| 410 | fcfid $A1,$A1 |
| 411 | fcfid $A2,$A2 |
| 412 | fcfid $A3,$A3 |
| 413 | fcfid $N0,$N0 |
| 414 | fcfid $N1,$N1 |
| 415 | fcfid $N2,$N2 |
| 416 | fcfid $N3,$N3 |
| 417 | addi $ap,$ap,16 |
| 418 | addi $np,$np,16 |
| 419 | |
| 420 | fmul $T1a,$A1,$ba |
| 421 | fmul $T1b,$A1,$bb |
| 422 | fmul $T2a,$A2,$ba |
| 423 | fmul $T2b,$A2,$bb |
| 424 | stfd $A0,8($nap_d) ; save a[j] in double format |
| 425 | stfd $A1,16($nap_d) |
| 426 | fmul $T3a,$A3,$ba |
| 427 | fmul $T3b,$A3,$bb |
| 428 | fmadd $T0a,$A0,$ba,$dota |
| 429 | fmadd $T0b,$A0,$bb,$dotb |
| 430 | stfd $A2,24($nap_d) ; save a[j+1] in double format |
| 431 | stfd $A3,32($nap_d) |
| 432 | |
| 433 | fmadd $T1a,$A0,$bc,$T1a |
| 434 | fmadd $T1b,$A0,$bd,$T1b |
| 435 | fmadd $T2a,$A1,$bc,$T2a |
| 436 | fmadd $T2b,$A1,$bd,$T2b |
| 437 | stfd $N0,40($nap_d) ; save n[j] in double format |
| 438 | stfd $N1,48($nap_d) |
| 439 | fmadd $T3a,$A2,$bc,$T3a |
| 440 | fmadd $T3b,$A2,$bd,$T3b |
| 441 | add $t0,$t0,$carry ; can not overflow |
| 442 | fmul $dota,$A3,$bc |
| 443 | fmul $dotb,$A3,$bd |
| 444 | stfd $N2,56($nap_d) ; save n[j+1] in double format |
| 445 | stfdu $N3,64($nap_d) |
| 446 | srdi $carry,$t0,16 |
| 447 | add $t1,$t1,$carry |
| 448 | srdi $carry,$t1,16 |
| 449 | |
| 450 | fmadd $T1a,$N1,$na,$T1a |
| 451 | fmadd $T1b,$N1,$nb,$T1b |
| 452 | insrdi $t0,$t1,16,32 |
| 453 | fmadd $T2a,$N2,$na,$T2a |
| 454 | fmadd $T2b,$N2,$nb,$T2b |
| 455 | add $t2,$t2,$carry |
| 456 | fmadd $T3a,$N3,$na,$T3a |
| 457 | fmadd $T3b,$N3,$nb,$T3b |
| 458 | srdi $carry,$t2,16 |
| 459 | fmadd $T0a,$N0,$na,$T0a |
| 460 | fmadd $T0b,$N0,$nb,$T0b |
| 461 | insrdi $t0,$t2,16,16 |
| 462 | add $t3,$t3,$carry |
| 463 | srdi $carry,$t3,16 |
| 464 | |
| 465 | fmadd $T1a,$N0,$nc,$T1a |
| 466 | fmadd $T1b,$N0,$nd,$T1b |
| 467 | insrdi $t0,$t3,16,0 ; 0..63 bits |
| 468 | fmadd $T2a,$N1,$nc,$T2a |
| 469 | fmadd $T2b,$N1,$nd,$T2b |
| 470 | add $t4,$t4,$carry |
| 471 | fmadd $T3a,$N2,$nc,$T3a |
| 472 | fmadd $T3b,$N2,$nd,$T3b |
| 473 | srdi $carry,$t4,16 |
| 474 | fmadd $dota,$N3,$nc,$dota |
| 475 | fmadd $dotb,$N3,$nd,$dotb |
| 476 | add $t5,$t5,$carry |
| 477 | srdi $carry,$t5,16 |
| 478 | insrdi $t4,$t5,16,32 |
| 479 | |
| 480 | fctid $T0a,$T0a |
| 481 | fctid $T0b,$T0b |
| 482 | add $t6,$t6,$carry |
| 483 | fctid $T1a,$T1a |
| 484 | fctid $T1b,$T1b |
| 485 | srdi $carry,$t6,16 |
| 486 | fctid $T2a,$T2a |
| 487 | fctid $T2b,$T2b |
| 488 | insrdi $t4,$t6,16,16 |
| 489 | fctid $T3a,$T3a |
| 490 | fctid $T3b,$T3b |
| 491 | add $t7,$t7,$carry |
| 492 | insrdi $t4,$t7,16,0 ; 64..127 bits |
| 493 | srdi $carry,$t7,16 ; upper 33 bits |
| 494 | |
| 495 | stfd $T0a,`$FRAME+0`($sp) |
| 496 | stfd $T0b,`$FRAME+8`($sp) |
| 497 | stfd $T1a,`$FRAME+16`($sp) |
| 498 | stfd $T1b,`$FRAME+24`($sp) |
| 499 | stfd $T2a,`$FRAME+32`($sp) |
| 500 | stfd $T2b,`$FRAME+40`($sp) |
| 501 | stfd $T3a,`$FRAME+48`($sp) |
| 502 | stfd $T3b,`$FRAME+56`($sp) |
| 503 | std $t0,8($tp) ; tp[j-1] |
| 504 | stdu $t4,16($tp) ; tp[j] |
| 505 | bdnz- L1st |
| 506 | |
| 507 | fctid $dota,$dota |
| 508 | fctid $dotb,$dotb |
| 509 | |
| 510 | ld $t0,`$FRAME+0`($sp) |
| 511 | ld $t1,`$FRAME+8`($sp) |
| 512 | ld $t2,`$FRAME+16`($sp) |
| 513 | ld $t3,`$FRAME+24`($sp) |
| 514 | ld $t4,`$FRAME+32`($sp) |
| 515 | ld $t5,`$FRAME+40`($sp) |
| 516 | ld $t6,`$FRAME+48`($sp) |
| 517 | ld $t7,`$FRAME+56`($sp) |
| 518 | stfd $dota,`$FRAME+64`($sp) |
| 519 | stfd $dotb,`$FRAME+72`($sp) |
| 520 | |
| 521 | add $t0,$t0,$carry ; can not overflow |
| 522 | srdi $carry,$t0,16 |
| 523 | add $t1,$t1,$carry |
| 524 | srdi $carry,$t1,16 |
| 525 | insrdi $t0,$t1,16,32 |
| 526 | add $t2,$t2,$carry |
| 527 | srdi $carry,$t2,16 |
| 528 | insrdi $t0,$t2,16,16 |
| 529 | add $t3,$t3,$carry |
| 530 | srdi $carry,$t3,16 |
| 531 | insrdi $t0,$t3,16,0 ; 0..63 bits |
| 532 | add $t4,$t4,$carry |
| 533 | srdi $carry,$t4,16 |
| 534 | add $t5,$t5,$carry |
| 535 | srdi $carry,$t5,16 |
| 536 | insrdi $t4,$t5,16,32 |
| 537 | add $t6,$t6,$carry |
| 538 | srdi $carry,$t6,16 |
| 539 | insrdi $t4,$t6,16,16 |
| 540 | add $t7,$t7,$carry |
| 541 | insrdi $t4,$t7,16,0 ; 64..127 bits |
| 542 | srdi $carry,$t7,16 ; upper 33 bits |
| 543 | ld $t6,`$FRAME+64`($sp) |
| 544 | ld $t7,`$FRAME+72`($sp) |
| 545 | |
| 546 | std $t0,8($tp) ; tp[j-1] |
| 547 | stdu $t4,16($tp) ; tp[j] |
| 548 | |
| 549 | add $t6,$t6,$carry ; can not overflow |
| 550 | srdi $carry,$t6,16 |
| 551 | add $t7,$t7,$carry |
| 552 | insrdi $t6,$t7,48,0 |
| 553 | srdi $ovf,$t7,48 |
| 554 | std $t6,8($tp) ; tp[num-1] |
| 555 | |
| 556 | slwi $t7,$num,2 |
| 557 | subf $nap_d,$t7,$nap_d ; rewind pointer |
| 558 | |
| 559 | li $i,8 ; i=1 |
| 560 | .align 5 |
| 561 | Louter: |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 562 | ldx $t3,$bp,$i ; bp[i] |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 563 | ld $t6,`$FRAME+$TRANSFER+8`($sp) ; tp[0] |
| 564 | mulld $t7,$a0,$t3 ; ap[0]*bp[i] |
| 565 | |
| 566 | addi $tp,$sp,`$FRAME+$TRANSFER` |
| 567 | add $t7,$t7,$t6 ; ap[0]*bp[i]+tp[0] |
| 568 | li $carry,0 |
| 569 | mulld $t7,$t7,$n0 ; tp[0]*n0 |
| 570 | mtctr $j |
| 571 | |
| 572 | ; transfer bp[i] to FPU as 4x16-bit values |
| 573 | extrdi $t0,$t3,16,48 |
| 574 | extrdi $t1,$t3,16,32 |
| 575 | extrdi $t2,$t3,16,16 |
| 576 | extrdi $t3,$t3,16,0 |
| 577 | std $t0,`$FRAME+0`($sp) |
| 578 | std $t1,`$FRAME+8`($sp) |
| 579 | std $t2,`$FRAME+16`($sp) |
| 580 | std $t3,`$FRAME+24`($sp) |
| 581 | ; transfer (ap[0]*bp[i]+tp[0])*n0 to FPU as 4x16-bit values |
| 582 | extrdi $t4,$t7,16,48 |
| 583 | extrdi $t5,$t7,16,32 |
| 584 | extrdi $t6,$t7,16,16 |
| 585 | extrdi $t7,$t7,16,0 |
| 586 | std $t4,`$FRAME+32`($sp) |
| 587 | std $t5,`$FRAME+40`($sp) |
| 588 | std $t6,`$FRAME+48`($sp) |
| 589 | std $t7,`$FRAME+56`($sp) |
| 590 | |
| 591 | lfd $A0,8($nap_d) ; load a[j] in double format |
| 592 | lfd $A1,16($nap_d) |
| 593 | lfd $A2,24($nap_d) ; load a[j+1] in double format |
| 594 | lfd $A3,32($nap_d) |
| 595 | lfd $N0,40($nap_d) ; load n[j] in double format |
| 596 | lfd $N1,48($nap_d) |
| 597 | lfd $N2,56($nap_d) ; load n[j+1] in double format |
| 598 | lfdu $N3,64($nap_d) |
| 599 | |
| 600 | lfd $ba,`$FRAME+0`($sp) |
| 601 | lfd $bb,`$FRAME+8`($sp) |
| 602 | lfd $bc,`$FRAME+16`($sp) |
| 603 | lfd $bd,`$FRAME+24`($sp) |
| 604 | lfd $na,`$FRAME+32`($sp) |
| 605 | lfd $nb,`$FRAME+40`($sp) |
| 606 | lfd $nc,`$FRAME+48`($sp) |
| 607 | lfd $nd,`$FRAME+56`($sp) |
| 608 | |
| 609 | fcfid $ba,$ba |
| 610 | fcfid $bb,$bb |
| 611 | fcfid $bc,$bc |
| 612 | fcfid $bd,$bd |
| 613 | fcfid $na,$na |
| 614 | fcfid $nb,$nb |
| 615 | fcfid $nc,$nc |
| 616 | fcfid $nd,$nd |
| 617 | |
| 618 | fmul $T1a,$A1,$ba |
| 619 | fmul $T1b,$A1,$bb |
| 620 | fmul $T2a,$A2,$ba |
| 621 | fmul $T2b,$A2,$bb |
| 622 | fmul $T3a,$A3,$ba |
| 623 | fmul $T3b,$A3,$bb |
| 624 | fmul $T0a,$A0,$ba |
| 625 | fmul $T0b,$A0,$bb |
| 626 | |
| 627 | fmadd $T1a,$A0,$bc,$T1a |
| 628 | fmadd $T1b,$A0,$bd,$T1b |
| 629 | fmadd $T2a,$A1,$bc,$T2a |
| 630 | fmadd $T2b,$A1,$bd,$T2b |
| 631 | fmadd $T3a,$A2,$bc,$T3a |
| 632 | fmadd $T3b,$A2,$bd,$T3b |
| 633 | fmul $dota,$A3,$bc |
| 634 | fmul $dotb,$A3,$bd |
| 635 | |
| 636 | fmadd $T1a,$N1,$na,$T1a |
| 637 | fmadd $T1b,$N1,$nb,$T1b |
| 638 | lfd $A0,8($nap_d) ; load a[j] in double format |
| 639 | lfd $A1,16($nap_d) |
| 640 | fmadd $T2a,$N2,$na,$T2a |
| 641 | fmadd $T2b,$N2,$nb,$T2b |
| 642 | lfd $A2,24($nap_d) ; load a[j+1] in double format |
| 643 | lfd $A3,32($nap_d) |
| 644 | fmadd $T3a,$N3,$na,$T3a |
| 645 | fmadd $T3b,$N3,$nb,$T3b |
| 646 | fmadd $T0a,$N0,$na,$T0a |
| 647 | fmadd $T0b,$N0,$nb,$T0b |
| 648 | |
| 649 | fmadd $T1a,$N0,$nc,$T1a |
| 650 | fmadd $T1b,$N0,$nd,$T1b |
| 651 | fmadd $T2a,$N1,$nc,$T2a |
| 652 | fmadd $T2b,$N1,$nd,$T2b |
| 653 | fmadd $T3a,$N2,$nc,$T3a |
| 654 | fmadd $T3b,$N2,$nd,$T3b |
| 655 | fmadd $dota,$N3,$nc,$dota |
| 656 | fmadd $dotb,$N3,$nd,$dotb |
| 657 | |
| 658 | fctid $T0a,$T0a |
| 659 | fctid $T0b,$T0b |
| 660 | fctid $T1a,$T1a |
| 661 | fctid $T1b,$T1b |
| 662 | fctid $T2a,$T2a |
| 663 | fctid $T2b,$T2b |
| 664 | fctid $T3a,$T3a |
| 665 | fctid $T3b,$T3b |
| 666 | |
| 667 | stfd $T0a,`$FRAME+0`($sp) |
| 668 | stfd $T0b,`$FRAME+8`($sp) |
| 669 | stfd $T1a,`$FRAME+16`($sp) |
| 670 | stfd $T1b,`$FRAME+24`($sp) |
| 671 | stfd $T2a,`$FRAME+32`($sp) |
| 672 | stfd $T2b,`$FRAME+40`($sp) |
| 673 | stfd $T3a,`$FRAME+48`($sp) |
| 674 | stfd $T3b,`$FRAME+56`($sp) |
| 675 | |
| 676 | .align 5 |
| 677 | Linner: |
| 678 | fmul $T1a,$A1,$ba |
| 679 | fmul $T1b,$A1,$bb |
| 680 | fmul $T2a,$A2,$ba |
| 681 | fmul $T2b,$A2,$bb |
| 682 | lfd $N0,40($nap_d) ; load n[j] in double format |
| 683 | lfd $N1,48($nap_d) |
| 684 | fmul $T3a,$A3,$ba |
| 685 | fmul $T3b,$A3,$bb |
| 686 | fmadd $T0a,$A0,$ba,$dota |
| 687 | fmadd $T0b,$A0,$bb,$dotb |
| 688 | lfd $N2,56($nap_d) ; load n[j+1] in double format |
| 689 | lfdu $N3,64($nap_d) |
| 690 | |
| 691 | fmadd $T1a,$A0,$bc,$T1a |
| 692 | fmadd $T1b,$A0,$bd,$T1b |
| 693 | fmadd $T2a,$A1,$bc,$T2a |
| 694 | fmadd $T2b,$A1,$bd,$T2b |
| 695 | lfd $A0,8($nap_d) ; load a[j] in double format |
| 696 | lfd $A1,16($nap_d) |
| 697 | fmadd $T3a,$A2,$bc,$T3a |
| 698 | fmadd $T3b,$A2,$bd,$T3b |
| 699 | fmul $dota,$A3,$bc |
| 700 | fmul $dotb,$A3,$bd |
| 701 | lfd $A2,24($nap_d) ; load a[j+1] in double format |
| 702 | lfd $A3,32($nap_d) |
| 703 | |
| 704 | fmadd $T1a,$N1,$na,$T1a |
| 705 | fmadd $T1b,$N1,$nb,$T1b |
| 706 | ld $t0,`$FRAME+0`($sp) |
| 707 | ld $t1,`$FRAME+8`($sp) |
| 708 | fmadd $T2a,$N2,$na,$T2a |
| 709 | fmadd $T2b,$N2,$nb,$T2b |
| 710 | ld $t2,`$FRAME+16`($sp) |
| 711 | ld $t3,`$FRAME+24`($sp) |
| 712 | fmadd $T3a,$N3,$na,$T3a |
| 713 | fmadd $T3b,$N3,$nb,$T3b |
| 714 | add $t0,$t0,$carry ; can not overflow |
| 715 | ld $t4,`$FRAME+32`($sp) |
| 716 | ld $t5,`$FRAME+40`($sp) |
| 717 | fmadd $T0a,$N0,$na,$T0a |
| 718 | fmadd $T0b,$N0,$nb,$T0b |
| 719 | srdi $carry,$t0,16 |
| 720 | add $t1,$t1,$carry |
| 721 | srdi $carry,$t1,16 |
| 722 | ld $t6,`$FRAME+48`($sp) |
| 723 | ld $t7,`$FRAME+56`($sp) |
| 724 | |
| 725 | fmadd $T1a,$N0,$nc,$T1a |
| 726 | fmadd $T1b,$N0,$nd,$T1b |
| 727 | insrdi $t0,$t1,16,32 |
| 728 | ld $t1,8($tp) ; tp[j] |
| 729 | fmadd $T2a,$N1,$nc,$T2a |
| 730 | fmadd $T2b,$N1,$nd,$T2b |
| 731 | add $t2,$t2,$carry |
| 732 | fmadd $T3a,$N2,$nc,$T3a |
| 733 | fmadd $T3b,$N2,$nd,$T3b |
| 734 | srdi $carry,$t2,16 |
| 735 | insrdi $t0,$t2,16,16 |
| 736 | fmadd $dota,$N3,$nc,$dota |
| 737 | fmadd $dotb,$N3,$nd,$dotb |
| 738 | add $t3,$t3,$carry |
| 739 | ldu $t2,16($tp) ; tp[j+1] |
| 740 | srdi $carry,$t3,16 |
| 741 | insrdi $t0,$t3,16,0 ; 0..63 bits |
| 742 | add $t4,$t4,$carry |
| 743 | |
| 744 | fctid $T0a,$T0a |
| 745 | fctid $T0b,$T0b |
| 746 | srdi $carry,$t4,16 |
| 747 | fctid $T1a,$T1a |
| 748 | fctid $T1b,$T1b |
| 749 | add $t5,$t5,$carry |
| 750 | fctid $T2a,$T2a |
| 751 | fctid $T2b,$T2b |
| 752 | srdi $carry,$t5,16 |
| 753 | insrdi $t4,$t5,16,32 |
| 754 | fctid $T3a,$T3a |
| 755 | fctid $T3b,$T3b |
| 756 | add $t6,$t6,$carry |
| 757 | srdi $carry,$t6,16 |
| 758 | insrdi $t4,$t6,16,16 |
| 759 | |
| 760 | stfd $T0a,`$FRAME+0`($sp) |
| 761 | stfd $T0b,`$FRAME+8`($sp) |
| 762 | add $t7,$t7,$carry |
| 763 | addc $t3,$t0,$t1 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 764 | stfd $T1a,`$FRAME+16`($sp) |
| 765 | stfd $T1b,`$FRAME+24`($sp) |
| 766 | insrdi $t4,$t7,16,0 ; 64..127 bits |
| 767 | srdi $carry,$t7,16 ; upper 33 bits |
| 768 | stfd $T2a,`$FRAME+32`($sp) |
| 769 | stfd $T2b,`$FRAME+40`($sp) |
| 770 | adde $t5,$t4,$t2 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 771 | stfd $T3a,`$FRAME+48`($sp) |
| 772 | stfd $T3b,`$FRAME+56`($sp) |
| 773 | addze $carry,$carry |
| 774 | std $t3,-16($tp) ; tp[j-1] |
| 775 | std $t5,-8($tp) ; tp[j] |
| 776 | bdnz- Linner |
| 777 | |
| 778 | fctid $dota,$dota |
| 779 | fctid $dotb,$dotb |
| 780 | ld $t0,`$FRAME+0`($sp) |
| 781 | ld $t1,`$FRAME+8`($sp) |
| 782 | ld $t2,`$FRAME+16`($sp) |
| 783 | ld $t3,`$FRAME+24`($sp) |
| 784 | ld $t4,`$FRAME+32`($sp) |
| 785 | ld $t5,`$FRAME+40`($sp) |
| 786 | ld $t6,`$FRAME+48`($sp) |
| 787 | ld $t7,`$FRAME+56`($sp) |
| 788 | stfd $dota,`$FRAME+64`($sp) |
| 789 | stfd $dotb,`$FRAME+72`($sp) |
| 790 | |
| 791 | add $t0,$t0,$carry ; can not overflow |
| 792 | srdi $carry,$t0,16 |
| 793 | add $t1,$t1,$carry |
| 794 | srdi $carry,$t1,16 |
| 795 | insrdi $t0,$t1,16,32 |
| 796 | add $t2,$t2,$carry |
| 797 | ld $t1,8($tp) ; tp[j] |
| 798 | srdi $carry,$t2,16 |
| 799 | insrdi $t0,$t2,16,16 |
| 800 | add $t3,$t3,$carry |
| 801 | ldu $t2,16($tp) ; tp[j+1] |
| 802 | srdi $carry,$t3,16 |
| 803 | insrdi $t0,$t3,16,0 ; 0..63 bits |
| 804 | add $t4,$t4,$carry |
| 805 | srdi $carry,$t4,16 |
| 806 | add $t5,$t5,$carry |
| 807 | srdi $carry,$t5,16 |
| 808 | insrdi $t4,$t5,16,32 |
| 809 | add $t6,$t6,$carry |
| 810 | srdi $carry,$t6,16 |
| 811 | insrdi $t4,$t6,16,16 |
| 812 | add $t7,$t7,$carry |
| 813 | insrdi $t4,$t7,16,0 ; 64..127 bits |
| 814 | srdi $carry,$t7,16 ; upper 33 bits |
| 815 | ld $t6,`$FRAME+64`($sp) |
| 816 | ld $t7,`$FRAME+72`($sp) |
| 817 | |
| 818 | addc $t3,$t0,$t1 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 819 | adde $t5,$t4,$t2 |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 820 | addze $carry,$carry |
| 821 | |
| 822 | std $t3,-16($tp) ; tp[j-1] |
| 823 | std $t5,-8($tp) ; tp[j] |
| 824 | |
| 825 | add $carry,$carry,$ovf ; comsume upmost overflow |
| 826 | add $t6,$t6,$carry ; can not overflow |
| 827 | srdi $carry,$t6,16 |
| 828 | add $t7,$t7,$carry |
| 829 | insrdi $t6,$t7,48,0 |
| 830 | srdi $ovf,$t7,48 |
| 831 | std $t6,0($tp) ; tp[num-1] |
| 832 | |
| 833 | slwi $t7,$num,2 |
| 834 | addi $i,$i,8 |
| 835 | subf $nap_d,$t7,$nap_d ; rewind pointer |
| 836 | cmpw $i,$num |
| 837 | blt- Louter |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 838 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 839 | subf $np,$num,$np ; rewind np |
| 840 | addi $j,$j,1 ; restore counter |
| 841 | subfc $i,$i,$i ; j=0 and "clear" XER[CA] |
| 842 | addi $tp,$sp,`$FRAME+$TRANSFER+8` |
| 843 | addi $t4,$sp,`$FRAME+$TRANSFER+16` |
| 844 | addi $t5,$np,8 |
| 845 | addi $t6,$rp,8 |
| 846 | mtctr $j |
| 847 | |
| 848 | .align 4 |
| 849 | Lsub: ldx $t0,$tp,$i |
| 850 | ldx $t1,$np,$i |
| 851 | ldx $t2,$t4,$i |
| 852 | ldx $t3,$t5,$i |
| 853 | subfe $t0,$t1,$t0 ; tp[j]-np[j] |
| 854 | subfe $t2,$t3,$t2 ; tp[j+1]-np[j+1] |
| 855 | stdx $t0,$rp,$i |
| 856 | stdx $t2,$t6,$i |
| 857 | addi $i,$i,16 |
| 858 | bdnz- Lsub |
| 859 | |
| 860 | li $i,0 |
| 861 | subfe $ovf,$i,$ovf ; handle upmost overflow bit |
| 862 | and $ap,$tp,$ovf |
| 863 | andc $np,$rp,$ovf |
| 864 | or $ap,$ap,$np ; ap=borrow?tp:rp |
| 865 | addi $t7,$ap,8 |
| 866 | mtctr $j |
| 867 | |
| 868 | .align 4 |
| 869 | Lcopy: ; copy or in-place refresh |
| 870 | ldx $t0,$ap,$i |
| 871 | ldx $t1,$t7,$i |
| 872 | std $i,8($nap_d) ; zap nap_d |
| 873 | std $i,16($nap_d) |
| 874 | std $i,24($nap_d) |
| 875 | std $i,32($nap_d) |
| 876 | std $i,40($nap_d) |
| 877 | std $i,48($nap_d) |
| 878 | std $i,56($nap_d) |
| 879 | stdu $i,64($nap_d) |
| 880 | stdx $t0,$rp,$i |
| 881 | stdx $t1,$t6,$i |
| 882 | stdx $i,$tp,$i ; zap tp at once |
| 883 | stdx $i,$t4,$i |
| 884 | addi $i,$i,16 |
| 885 | bdnz- Lcopy |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 886 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 887 | $POP r14,`2*$SIZE_T`($sp) |
| 888 | $POP r15,`3*$SIZE_T`($sp) |
| 889 | $POP r16,`4*$SIZE_T`($sp) |
| 890 | $POP r17,`5*$SIZE_T`($sp) |
| 891 | $POP r18,`6*$SIZE_T`($sp) |
| 892 | $POP r19,`7*$SIZE_T`($sp) |
| 893 | $POP r20,`8*$SIZE_T`($sp) |
| 894 | $POP r21,`9*$SIZE_T`($sp) |
| 895 | $POP r22,`10*$SIZE_T`($sp) |
| 896 | $POP r23,`11*$SIZE_T`($sp) |
| 897 | lfd f14,`12*$SIZE_T+0`($sp) |
| 898 | lfd f15,`12*$SIZE_T+8`($sp) |
| 899 | lfd f16,`12*$SIZE_T+16`($sp) |
| 900 | lfd f17,`12*$SIZE_T+24`($sp) |
| 901 | lfd f18,`12*$SIZE_T+32`($sp) |
| 902 | lfd f19,`12*$SIZE_T+40`($sp) |
| 903 | lfd f20,`12*$SIZE_T+48`($sp) |
| 904 | lfd f21,`12*$SIZE_T+56`($sp) |
| 905 | lfd f22,`12*$SIZE_T+64`($sp) |
| 906 | lfd f23,`12*$SIZE_T+72`($sp) |
| 907 | lfd f24,`12*$SIZE_T+80`($sp) |
| 908 | lfd f25,`12*$SIZE_T+88`($sp) |
| 909 | $POP $sp,0($sp) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 910 | li r3,1 ; signal "handled" |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 911 | blr |
| 912 | .long 0 |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 913 | .asciz "Montgomery Multiplication for PPC64, CRYPTOGAMS by <appro\@fy.chalmers.se>" |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 914 | ___ |
| 915 | |
| 916 | $code =~ s/\`([^\`]*)\`/eval $1/gem; |
| 917 | print $code; |
| 918 | close STDOUT; |