Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | #!/usr/local/bin/perl |
| 2 | |
| 3 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 4 | push(@INC,"${dir}","${dir}../../perlasm"); |
| 5 | require "x86asm.pl"; |
| 6 | |
| 7 | &asm_init($ARGV[0],$0); |
| 8 | |
| 9 | $sse2=0; |
| 10 | for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } |
| 11 | |
| 12 | &external_label("OPENSSL_ia32cap_P") if ($sse2); |
| 13 | |
| 14 | &bn_mul_add_words("bn_mul_add_words"); |
| 15 | &bn_mul_words("bn_mul_words"); |
| 16 | &bn_sqr_words("bn_sqr_words"); |
| 17 | &bn_div_words("bn_div_words"); |
| 18 | &bn_add_words("bn_add_words"); |
| 19 | &bn_sub_words("bn_sub_words"); |
| 20 | &bn_sub_part_words("bn_sub_part_words"); |
| 21 | |
| 22 | &asm_finish(); |
| 23 | |
| 24 | sub bn_mul_add_words |
| 25 | { |
| 26 | local($name)=@_; |
| 27 | |
| 28 | &function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":""); |
| 29 | |
| 30 | $r="eax"; |
| 31 | $a="edx"; |
| 32 | $c="ecx"; |
| 33 | |
| 34 | if ($sse2) { |
| 35 | &picmeup("eax","OPENSSL_ia32cap_P"); |
| 36 | &bt(&DWP(0,"eax"),26); |
| 37 | &jnc(&label("maw_non_sse2")); |
| 38 | |
| 39 | &mov($r,&wparam(0)); |
| 40 | &mov($a,&wparam(1)); |
| 41 | &mov($c,&wparam(2)); |
| 42 | &movd("mm0",&wparam(3)); # mm0 = w |
| 43 | &pxor("mm1","mm1"); # mm1 = carry_in |
| 44 | &jmp(&label("maw_sse2_entry")); |
| 45 | |
| 46 | &set_label("maw_sse2_unrolled",16); |
| 47 | &movd("mm3",&DWP(0,$r,"",0)); # mm3 = r[0] |
| 48 | &paddq("mm1","mm3"); # mm1 = carry_in + r[0] |
| 49 | &movd("mm2",&DWP(0,$a,"",0)); # mm2 = a[0] |
| 50 | &pmuludq("mm2","mm0"); # mm2 = w*a[0] |
| 51 | &movd("mm4",&DWP(4,$a,"",0)); # mm4 = a[1] |
| 52 | &pmuludq("mm4","mm0"); # mm4 = w*a[1] |
| 53 | &movd("mm6",&DWP(8,$a,"",0)); # mm6 = a[2] |
| 54 | &pmuludq("mm6","mm0"); # mm6 = w*a[2] |
| 55 | &movd("mm7",&DWP(12,$a,"",0)); # mm7 = a[3] |
| 56 | &pmuludq("mm7","mm0"); # mm7 = w*a[3] |
| 57 | &paddq("mm1","mm2"); # mm1 = carry_in + r[0] + w*a[0] |
| 58 | &movd("mm3",&DWP(4,$r,"",0)); # mm3 = r[1] |
| 59 | &paddq("mm3","mm4"); # mm3 = r[1] + w*a[1] |
| 60 | &movd("mm5",&DWP(8,$r,"",0)); # mm5 = r[2] |
| 61 | &paddq("mm5","mm6"); # mm5 = r[2] + w*a[2] |
| 62 | &movd("mm4",&DWP(12,$r,"",0)); # mm4 = r[3] |
| 63 | &paddq("mm7","mm4"); # mm7 = r[3] + w*a[3] |
| 64 | &movd(&DWP(0,$r,"",0),"mm1"); |
| 65 | &movd("mm2",&DWP(16,$a,"",0)); # mm2 = a[4] |
| 66 | &pmuludq("mm2","mm0"); # mm2 = w*a[4] |
| 67 | &psrlq("mm1",32); # mm1 = carry0 |
| 68 | &movd("mm4",&DWP(20,$a,"",0)); # mm4 = a[5] |
| 69 | &pmuludq("mm4","mm0"); # mm4 = w*a[5] |
| 70 | &paddq("mm1","mm3"); # mm1 = carry0 + r[1] + w*a[1] |
| 71 | &movd("mm6",&DWP(24,$a,"",0)); # mm6 = a[6] |
| 72 | &pmuludq("mm6","mm0"); # mm6 = w*a[6] |
| 73 | &movd(&DWP(4,$r,"",0),"mm1"); |
| 74 | &psrlq("mm1",32); # mm1 = carry1 |
| 75 | &movd("mm3",&DWP(28,$a,"",0)); # mm3 = a[7] |
| 76 | &add($a,32); |
| 77 | &pmuludq("mm3","mm0"); # mm3 = w*a[7] |
| 78 | &paddq("mm1","mm5"); # mm1 = carry1 + r[2] + w*a[2] |
| 79 | &movd("mm5",&DWP(16,$r,"",0)); # mm5 = r[4] |
| 80 | &paddq("mm2","mm5"); # mm2 = r[4] + w*a[4] |
| 81 | &movd(&DWP(8,$r,"",0),"mm1"); |
| 82 | &psrlq("mm1",32); # mm1 = carry2 |
| 83 | &paddq("mm1","mm7"); # mm1 = carry2 + r[3] + w*a[3] |
| 84 | &movd("mm5",&DWP(20,$r,"",0)); # mm5 = r[5] |
| 85 | &paddq("mm4","mm5"); # mm4 = r[5] + w*a[5] |
| 86 | &movd(&DWP(12,$r,"",0),"mm1"); |
| 87 | &psrlq("mm1",32); # mm1 = carry3 |
| 88 | &paddq("mm1","mm2"); # mm1 = carry3 + r[4] + w*a[4] |
| 89 | &movd("mm5",&DWP(24,$r,"",0)); # mm5 = r[6] |
| 90 | &paddq("mm6","mm5"); # mm6 = r[6] + w*a[6] |
| 91 | &movd(&DWP(16,$r,"",0),"mm1"); |
| 92 | &psrlq("mm1",32); # mm1 = carry4 |
| 93 | &paddq("mm1","mm4"); # mm1 = carry4 + r[5] + w*a[5] |
| 94 | &movd("mm5",&DWP(28,$r,"",0)); # mm5 = r[7] |
| 95 | &paddq("mm3","mm5"); # mm3 = r[7] + w*a[7] |
| 96 | &movd(&DWP(20,$r,"",0),"mm1"); |
| 97 | &psrlq("mm1",32); # mm1 = carry5 |
| 98 | &paddq("mm1","mm6"); # mm1 = carry5 + r[6] + w*a[6] |
| 99 | &movd(&DWP(24,$r,"",0),"mm1"); |
| 100 | &psrlq("mm1",32); # mm1 = carry6 |
| 101 | &paddq("mm1","mm3"); # mm1 = carry6 + r[7] + w*a[7] |
| 102 | &movd(&DWP(28,$r,"",0),"mm1"); |
| 103 | &lea($r,&DWP(32,$r)); |
| 104 | &psrlq("mm1",32); # mm1 = carry_out |
| 105 | |
| 106 | &sub($c,8); |
| 107 | &jz(&label("maw_sse2_exit")); |
| 108 | &set_label("maw_sse2_entry"); |
| 109 | &test($c,0xfffffff8); |
| 110 | &jnz(&label("maw_sse2_unrolled")); |
| 111 | |
| 112 | &set_label("maw_sse2_loop",4); |
| 113 | &movd("mm2",&DWP(0,$a)); # mm2 = a[i] |
| 114 | &movd("mm3",&DWP(0,$r)); # mm3 = r[i] |
| 115 | &pmuludq("mm2","mm0"); # a[i] *= w |
| 116 | &lea($a,&DWP(4,$a)); |
| 117 | &paddq("mm1","mm3"); # carry += r[i] |
| 118 | &paddq("mm1","mm2"); # carry += a[i]*w |
| 119 | &movd(&DWP(0,$r),"mm1"); # r[i] = carry_low |
| 120 | &sub($c,1); |
| 121 | &psrlq("mm1",32); # carry = carry_high |
| 122 | &lea($r,&DWP(4,$r)); |
| 123 | &jnz(&label("maw_sse2_loop")); |
| 124 | &set_label("maw_sse2_exit"); |
| 125 | &movd("eax","mm1"); # c = carry_out |
| 126 | &emms(); |
| 127 | &ret(); |
| 128 | |
| 129 | &set_label("maw_non_sse2",16); |
| 130 | } |
| 131 | |
| 132 | # function_begin prologue |
| 133 | &push("ebp"); |
| 134 | &push("ebx"); |
| 135 | &push("esi"); |
| 136 | &push("edi"); |
| 137 | |
| 138 | &comment(""); |
| 139 | $Low="eax"; |
| 140 | $High="edx"; |
| 141 | $a="ebx"; |
| 142 | $w="ebp"; |
| 143 | $r="edi"; |
| 144 | $c="esi"; |
| 145 | |
| 146 | &xor($c,$c); # clear carry |
| 147 | &mov($r,&wparam(0)); # |
| 148 | |
| 149 | &mov("ecx",&wparam(2)); # |
| 150 | &mov($a,&wparam(1)); # |
| 151 | |
| 152 | &and("ecx",0xfffffff8); # num / 8 |
| 153 | &mov($w,&wparam(3)); # |
| 154 | |
| 155 | &push("ecx"); # Up the stack for a tmp variable |
| 156 | |
| 157 | &jz(&label("maw_finish")); |
| 158 | |
| 159 | &set_label("maw_loop",16); |
| 160 | |
| 161 | for ($i=0; $i<32; $i+=4) |
| 162 | { |
| 163 | &comment("Round $i"); |
| 164 | |
| 165 | &mov("eax",&DWP($i,$a)); # *a |
| 166 | &mul($w); # *a * w |
| 167 | &add("eax",$c); # L(t)+= c |
| 168 | &adc("edx",0); # H(t)+=carry |
| 169 | &add("eax",&DWP($i,$r)); # L(t)+= *r |
| 170 | &adc("edx",0); # H(t)+=carry |
| 171 | &mov(&DWP($i,$r),"eax"); # *r= L(t); |
| 172 | &mov($c,"edx"); # c= H(t); |
| 173 | } |
| 174 | |
| 175 | &comment(""); |
| 176 | &sub("ecx",8); |
| 177 | &lea($a,&DWP(32,$a)); |
| 178 | &lea($r,&DWP(32,$r)); |
| 179 | &jnz(&label("maw_loop")); |
| 180 | |
| 181 | &set_label("maw_finish",0); |
| 182 | &mov("ecx",&wparam(2)); # get num |
| 183 | &and("ecx",7); |
| 184 | &jnz(&label("maw_finish2")); # helps branch prediction |
| 185 | &jmp(&label("maw_end")); |
| 186 | |
| 187 | &set_label("maw_finish2",1); |
| 188 | for ($i=0; $i<7; $i++) |
| 189 | { |
| 190 | &comment("Tail Round $i"); |
| 191 | &mov("eax",&DWP($i*4,$a)); # *a |
| 192 | &mul($w); # *a * w |
| 193 | &add("eax",$c); # L(t)+=c |
| 194 | &adc("edx",0); # H(t)+=carry |
| 195 | &add("eax",&DWP($i*4,$r)); # L(t)+= *r |
| 196 | &adc("edx",0); # H(t)+=carry |
| 197 | &dec("ecx") if ($i != 7-1); |
| 198 | &mov(&DWP($i*4,$r),"eax"); # *r= L(t); |
| 199 | &mov($c,"edx"); # c= H(t); |
| 200 | &jz(&label("maw_end")) if ($i != 7-1); |
| 201 | } |
| 202 | &set_label("maw_end",0); |
| 203 | &mov("eax",$c); |
| 204 | |
| 205 | &pop("ecx"); # clear variable from |
| 206 | |
| 207 | &function_end($name); |
| 208 | } |
| 209 | |
| 210 | sub bn_mul_words |
| 211 | { |
| 212 | local($name)=@_; |
| 213 | |
| 214 | &function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":""); |
| 215 | |
| 216 | $r="eax"; |
| 217 | $a="edx"; |
| 218 | $c="ecx"; |
| 219 | |
| 220 | if ($sse2) { |
| 221 | &picmeup("eax","OPENSSL_ia32cap_P"); |
| 222 | &bt(&DWP(0,"eax"),26); |
| 223 | &jnc(&label("mw_non_sse2")); |
| 224 | |
| 225 | &mov($r,&wparam(0)); |
| 226 | &mov($a,&wparam(1)); |
| 227 | &mov($c,&wparam(2)); |
| 228 | &movd("mm0",&wparam(3)); # mm0 = w |
| 229 | &pxor("mm1","mm1"); # mm1 = carry = 0 |
| 230 | |
| 231 | &set_label("mw_sse2_loop",16); |
| 232 | &movd("mm2",&DWP(0,$a)); # mm2 = a[i] |
| 233 | &pmuludq("mm2","mm0"); # a[i] *= w |
| 234 | &lea($a,&DWP(4,$a)); |
| 235 | &paddq("mm1","mm2"); # carry += a[i]*w |
| 236 | &movd(&DWP(0,$r),"mm1"); # r[i] = carry_low |
| 237 | &sub($c,1); |
| 238 | &psrlq("mm1",32); # carry = carry_high |
| 239 | &lea($r,&DWP(4,$r)); |
| 240 | &jnz(&label("mw_sse2_loop")); |
| 241 | |
| 242 | &movd("eax","mm1"); # return carry |
| 243 | &emms(); |
| 244 | &ret(); |
| 245 | &set_label("mw_non_sse2",16); |
| 246 | } |
| 247 | |
| 248 | # function_begin prologue |
| 249 | &push("ebp"); |
| 250 | &push("ebx"); |
| 251 | &push("esi"); |
| 252 | &push("edi"); |
| 253 | |
| 254 | &comment(""); |
| 255 | $Low="eax"; |
| 256 | $High="edx"; |
| 257 | $a="ebx"; |
| 258 | $w="ecx"; |
| 259 | $r="edi"; |
| 260 | $c="esi"; |
| 261 | $num="ebp"; |
| 262 | |
| 263 | &xor($c,$c); # clear carry |
| 264 | &mov($r,&wparam(0)); # |
| 265 | &mov($a,&wparam(1)); # |
| 266 | &mov($num,&wparam(2)); # |
| 267 | &mov($w,&wparam(3)); # |
| 268 | |
| 269 | &and($num,0xfffffff8); # num / 8 |
| 270 | &jz(&label("mw_finish")); |
| 271 | |
| 272 | &set_label("mw_loop",0); |
| 273 | for ($i=0; $i<32; $i+=4) |
| 274 | { |
| 275 | &comment("Round $i"); |
| 276 | |
| 277 | &mov("eax",&DWP($i,$a,"",0)); # *a |
| 278 | &mul($w); # *a * w |
| 279 | &add("eax",$c); # L(t)+=c |
| 280 | # XXX |
| 281 | |
| 282 | &adc("edx",0); # H(t)+=carry |
| 283 | &mov(&DWP($i,$r,"",0),"eax"); # *r= L(t); |
| 284 | |
| 285 | &mov($c,"edx"); # c= H(t); |
| 286 | } |
| 287 | |
| 288 | &comment(""); |
| 289 | &add($a,32); |
| 290 | &add($r,32); |
| 291 | &sub($num,8); |
| 292 | &jz(&label("mw_finish")); |
| 293 | &jmp(&label("mw_loop")); |
| 294 | |
| 295 | &set_label("mw_finish",0); |
| 296 | &mov($num,&wparam(2)); # get num |
| 297 | &and($num,7); |
| 298 | &jnz(&label("mw_finish2")); |
| 299 | &jmp(&label("mw_end")); |
| 300 | |
| 301 | &set_label("mw_finish2",1); |
| 302 | for ($i=0; $i<7; $i++) |
| 303 | { |
| 304 | &comment("Tail Round $i"); |
| 305 | &mov("eax",&DWP($i*4,$a,"",0));# *a |
| 306 | &mul($w); # *a * w |
| 307 | &add("eax",$c); # L(t)+=c |
| 308 | # XXX |
| 309 | &adc("edx",0); # H(t)+=carry |
| 310 | &mov(&DWP($i*4,$r,"",0),"eax");# *r= L(t); |
| 311 | &mov($c,"edx"); # c= H(t); |
| 312 | &dec($num) if ($i != 7-1); |
| 313 | &jz(&label("mw_end")) if ($i != 7-1); |
| 314 | } |
| 315 | &set_label("mw_end",0); |
| 316 | &mov("eax",$c); |
| 317 | |
| 318 | &function_end($name); |
| 319 | } |
| 320 | |
| 321 | sub bn_sqr_words |
| 322 | { |
| 323 | local($name)=@_; |
| 324 | |
| 325 | &function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":""); |
| 326 | |
| 327 | $r="eax"; |
| 328 | $a="edx"; |
| 329 | $c="ecx"; |
| 330 | |
| 331 | if ($sse2) { |
| 332 | &picmeup("eax","OPENSSL_ia32cap_P"); |
| 333 | &bt(&DWP(0,"eax"),26); |
| 334 | &jnc(&label("sqr_non_sse2")); |
| 335 | |
| 336 | &mov($r,&wparam(0)); |
| 337 | &mov($a,&wparam(1)); |
| 338 | &mov($c,&wparam(2)); |
| 339 | |
| 340 | &set_label("sqr_sse2_loop",16); |
| 341 | &movd("mm0",&DWP(0,$a)); # mm0 = a[i] |
| 342 | &pmuludq("mm0","mm0"); # a[i] *= a[i] |
| 343 | &lea($a,&DWP(4,$a)); # a++ |
| 344 | &movq(&QWP(0,$r),"mm0"); # r[i] = a[i]*a[i] |
| 345 | &sub($c,1); |
| 346 | &lea($r,&DWP(8,$r)); # r += 2 |
| 347 | &jnz(&label("sqr_sse2_loop")); |
| 348 | |
| 349 | &emms(); |
| 350 | &ret(); |
| 351 | &set_label("sqr_non_sse2",16); |
| 352 | } |
| 353 | |
| 354 | # function_begin prologue |
| 355 | &push("ebp"); |
| 356 | &push("ebx"); |
| 357 | &push("esi"); |
| 358 | &push("edi"); |
| 359 | |
| 360 | &comment(""); |
| 361 | $r="esi"; |
| 362 | $a="edi"; |
| 363 | $num="ebx"; |
| 364 | |
| 365 | &mov($r,&wparam(0)); # |
| 366 | &mov($a,&wparam(1)); # |
| 367 | &mov($num,&wparam(2)); # |
| 368 | |
| 369 | &and($num,0xfffffff8); # num / 8 |
| 370 | &jz(&label("sw_finish")); |
| 371 | |
| 372 | &set_label("sw_loop",0); |
| 373 | for ($i=0; $i<32; $i+=4) |
| 374 | { |
| 375 | &comment("Round $i"); |
| 376 | &mov("eax",&DWP($i,$a,"",0)); # *a |
| 377 | # XXX |
| 378 | &mul("eax"); # *a * *a |
| 379 | &mov(&DWP($i*2,$r,"",0),"eax"); # |
| 380 | &mov(&DWP($i*2+4,$r,"",0),"edx");# |
| 381 | } |
| 382 | |
| 383 | &comment(""); |
| 384 | &add($a,32); |
| 385 | &add($r,64); |
| 386 | &sub($num,8); |
| 387 | &jnz(&label("sw_loop")); |
| 388 | |
| 389 | &set_label("sw_finish",0); |
| 390 | &mov($num,&wparam(2)); # get num |
| 391 | &and($num,7); |
| 392 | &jz(&label("sw_end")); |
| 393 | |
| 394 | for ($i=0; $i<7; $i++) |
| 395 | { |
| 396 | &comment("Tail Round $i"); |
| 397 | &mov("eax",&DWP($i*4,$a,"",0)); # *a |
| 398 | # XXX |
| 399 | &mul("eax"); # *a * *a |
| 400 | &mov(&DWP($i*8,$r,"",0),"eax"); # |
| 401 | &dec($num) if ($i != 7-1); |
| 402 | &mov(&DWP($i*8+4,$r,"",0),"edx"); |
| 403 | &jz(&label("sw_end")) if ($i != 7-1); |
| 404 | } |
| 405 | &set_label("sw_end",0); |
| 406 | |
| 407 | &function_end($name); |
| 408 | } |
| 409 | |
| 410 | sub bn_div_words |
| 411 | { |
| 412 | local($name)=@_; |
| 413 | |
| 414 | &function_begin_B($name,""); |
| 415 | &mov("edx",&wparam(0)); # |
| 416 | &mov("eax",&wparam(1)); # |
| 417 | &mov("ecx",&wparam(2)); # |
| 418 | &div("ecx"); |
| 419 | &ret(); |
| 420 | &function_end_B($name); |
| 421 | } |
| 422 | |
| 423 | sub bn_add_words |
| 424 | { |
| 425 | local($name)=@_; |
| 426 | |
| 427 | &function_begin($name,""); |
| 428 | |
| 429 | &comment(""); |
| 430 | $a="esi"; |
| 431 | $b="edi"; |
| 432 | $c="eax"; |
| 433 | $r="ebx"; |
| 434 | $tmp1="ecx"; |
| 435 | $tmp2="edx"; |
| 436 | $num="ebp"; |
| 437 | |
| 438 | &mov($r,&wparam(0)); # get r |
| 439 | &mov($a,&wparam(1)); # get a |
| 440 | &mov($b,&wparam(2)); # get b |
| 441 | &mov($num,&wparam(3)); # get num |
| 442 | &xor($c,$c); # clear carry |
| 443 | &and($num,0xfffffff8); # num / 8 |
| 444 | |
| 445 | &jz(&label("aw_finish")); |
| 446 | |
| 447 | &set_label("aw_loop",0); |
| 448 | for ($i=0; $i<8; $i++) |
| 449 | { |
| 450 | &comment("Round $i"); |
| 451 | |
| 452 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 453 | &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| 454 | &add($tmp1,$c); |
| 455 | &mov($c,0); |
| 456 | &adc($c,$c); |
| 457 | &add($tmp1,$tmp2); |
| 458 | &adc($c,0); |
| 459 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 460 | } |
| 461 | |
| 462 | &comment(""); |
| 463 | &add($a,32); |
| 464 | &add($b,32); |
| 465 | &add($r,32); |
| 466 | &sub($num,8); |
| 467 | &jnz(&label("aw_loop")); |
| 468 | |
| 469 | &set_label("aw_finish",0); |
| 470 | &mov($num,&wparam(3)); # get num |
| 471 | &and($num,7); |
| 472 | &jz(&label("aw_end")); |
| 473 | |
| 474 | for ($i=0; $i<7; $i++) |
| 475 | { |
| 476 | &comment("Tail Round $i"); |
| 477 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 478 | &mov($tmp2,&DWP($i*4,$b,"",0));# *b |
| 479 | &add($tmp1,$c); |
| 480 | &mov($c,0); |
| 481 | &adc($c,$c); |
| 482 | &add($tmp1,$tmp2); |
| 483 | &adc($c,0); |
| 484 | &dec($num) if ($i != 6); |
| 485 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 486 | &jz(&label("aw_end")) if ($i != 6); |
| 487 | } |
| 488 | &set_label("aw_end",0); |
| 489 | |
| 490 | # &mov("eax",$c); # $c is "eax" |
| 491 | |
| 492 | &function_end($name); |
| 493 | } |
| 494 | |
| 495 | sub bn_sub_words |
| 496 | { |
| 497 | local($name)=@_; |
| 498 | |
| 499 | &function_begin($name,""); |
| 500 | |
| 501 | &comment(""); |
| 502 | $a="esi"; |
| 503 | $b="edi"; |
| 504 | $c="eax"; |
| 505 | $r="ebx"; |
| 506 | $tmp1="ecx"; |
| 507 | $tmp2="edx"; |
| 508 | $num="ebp"; |
| 509 | |
| 510 | &mov($r,&wparam(0)); # get r |
| 511 | &mov($a,&wparam(1)); # get a |
| 512 | &mov($b,&wparam(2)); # get b |
| 513 | &mov($num,&wparam(3)); # get num |
| 514 | &xor($c,$c); # clear carry |
| 515 | &and($num,0xfffffff8); # num / 8 |
| 516 | |
| 517 | &jz(&label("aw_finish")); |
| 518 | |
| 519 | &set_label("aw_loop",0); |
| 520 | for ($i=0; $i<8; $i++) |
| 521 | { |
| 522 | &comment("Round $i"); |
| 523 | |
| 524 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 525 | &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| 526 | &sub($tmp1,$c); |
| 527 | &mov($c,0); |
| 528 | &adc($c,$c); |
| 529 | &sub($tmp1,$tmp2); |
| 530 | &adc($c,0); |
| 531 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 532 | } |
| 533 | |
| 534 | &comment(""); |
| 535 | &add($a,32); |
| 536 | &add($b,32); |
| 537 | &add($r,32); |
| 538 | &sub($num,8); |
| 539 | &jnz(&label("aw_loop")); |
| 540 | |
| 541 | &set_label("aw_finish",0); |
| 542 | &mov($num,&wparam(3)); # get num |
| 543 | &and($num,7); |
| 544 | &jz(&label("aw_end")); |
| 545 | |
| 546 | for ($i=0; $i<7; $i++) |
| 547 | { |
| 548 | &comment("Tail Round $i"); |
| 549 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 550 | &mov($tmp2,&DWP($i*4,$b,"",0));# *b |
| 551 | &sub($tmp1,$c); |
| 552 | &mov($c,0); |
| 553 | &adc($c,$c); |
| 554 | &sub($tmp1,$tmp2); |
| 555 | &adc($c,0); |
| 556 | &dec($num) if ($i != 6); |
| 557 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 558 | &jz(&label("aw_end")) if ($i != 6); |
| 559 | } |
| 560 | &set_label("aw_end",0); |
| 561 | |
| 562 | # &mov("eax",$c); # $c is "eax" |
| 563 | |
| 564 | &function_end($name); |
| 565 | } |
| 566 | |
| 567 | sub bn_sub_part_words |
| 568 | { |
| 569 | local($name)=@_; |
| 570 | |
| 571 | &function_begin($name,""); |
| 572 | |
| 573 | &comment(""); |
| 574 | $a="esi"; |
| 575 | $b="edi"; |
| 576 | $c="eax"; |
| 577 | $r="ebx"; |
| 578 | $tmp1="ecx"; |
| 579 | $tmp2="edx"; |
| 580 | $num="ebp"; |
| 581 | |
| 582 | &mov($r,&wparam(0)); # get r |
| 583 | &mov($a,&wparam(1)); # get a |
| 584 | &mov($b,&wparam(2)); # get b |
| 585 | &mov($num,&wparam(3)); # get num |
| 586 | &xor($c,$c); # clear carry |
| 587 | &and($num,0xfffffff8); # num / 8 |
| 588 | |
| 589 | &jz(&label("aw_finish")); |
| 590 | |
| 591 | &set_label("aw_loop",0); |
| 592 | for ($i=0; $i<8; $i++) |
| 593 | { |
| 594 | &comment("Round $i"); |
| 595 | |
| 596 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 597 | &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| 598 | &sub($tmp1,$c); |
| 599 | &mov($c,0); |
| 600 | &adc($c,$c); |
| 601 | &sub($tmp1,$tmp2); |
| 602 | &adc($c,0); |
| 603 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 604 | } |
| 605 | |
| 606 | &comment(""); |
| 607 | &add($a,32); |
| 608 | &add($b,32); |
| 609 | &add($r,32); |
| 610 | &sub($num,8); |
| 611 | &jnz(&label("aw_loop")); |
| 612 | |
| 613 | &set_label("aw_finish",0); |
| 614 | &mov($num,&wparam(3)); # get num |
| 615 | &and($num,7); |
| 616 | &jz(&label("aw_end")); |
| 617 | |
| 618 | for ($i=0; $i<7; $i++) |
| 619 | { |
| 620 | &comment("Tail Round $i"); |
| 621 | &mov($tmp1,&DWP(0,$a,"",0)); # *a |
| 622 | &mov($tmp2,&DWP(0,$b,"",0));# *b |
| 623 | &sub($tmp1,$c); |
| 624 | &mov($c,0); |
| 625 | &adc($c,$c); |
| 626 | &sub($tmp1,$tmp2); |
| 627 | &adc($c,0); |
| 628 | &mov(&DWP(0,$r,"",0),$tmp1); # *r |
| 629 | &add($a, 4); |
| 630 | &add($b, 4); |
| 631 | &add($r, 4); |
| 632 | &dec($num) if ($i != 6); |
| 633 | &jz(&label("aw_end")) if ($i != 6); |
| 634 | } |
| 635 | &set_label("aw_end",0); |
| 636 | |
| 637 | &cmp(&wparam(4),0); |
| 638 | &je(&label("pw_end")); |
| 639 | |
| 640 | &mov($num,&wparam(4)); # get dl |
| 641 | &cmp($num,0); |
| 642 | &je(&label("pw_end")); |
| 643 | &jge(&label("pw_pos")); |
| 644 | |
| 645 | &comment("pw_neg"); |
| 646 | &mov($tmp2,0); |
| 647 | &sub($tmp2,$num); |
| 648 | &mov($num,$tmp2); |
| 649 | &and($num,0xfffffff8); # num / 8 |
| 650 | &jz(&label("pw_neg_finish")); |
| 651 | |
| 652 | &set_label("pw_neg_loop",0); |
| 653 | for ($i=0; $i<8; $i++) |
| 654 | { |
| 655 | &comment("dl<0 Round $i"); |
| 656 | |
| 657 | &mov($tmp1,0); |
| 658 | &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| 659 | &sub($tmp1,$c); |
| 660 | &mov($c,0); |
| 661 | &adc($c,$c); |
| 662 | &sub($tmp1,$tmp2); |
| 663 | &adc($c,0); |
| 664 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 665 | } |
| 666 | |
| 667 | &comment(""); |
| 668 | &add($b,32); |
| 669 | &add($r,32); |
| 670 | &sub($num,8); |
| 671 | &jnz(&label("pw_neg_loop")); |
| 672 | |
| 673 | &set_label("pw_neg_finish",0); |
| 674 | &mov($tmp2,&wparam(4)); # get dl |
| 675 | &mov($num,0); |
| 676 | &sub($num,$tmp2); |
| 677 | &and($num,7); |
| 678 | &jz(&label("pw_end")); |
| 679 | |
| 680 | for ($i=0; $i<7; $i++) |
| 681 | { |
| 682 | &comment("dl<0 Tail Round $i"); |
| 683 | &mov($tmp1,0); |
| 684 | &mov($tmp2,&DWP($i*4,$b,"",0));# *b |
| 685 | &sub($tmp1,$c); |
| 686 | &mov($c,0); |
| 687 | &adc($c,$c); |
| 688 | &sub($tmp1,$tmp2); |
| 689 | &adc($c,0); |
| 690 | &dec($num) if ($i != 6); |
| 691 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 692 | &jz(&label("pw_end")) if ($i != 6); |
| 693 | } |
| 694 | |
| 695 | &jmp(&label("pw_end")); |
| 696 | |
| 697 | &set_label("pw_pos",0); |
| 698 | |
| 699 | &and($num,0xfffffff8); # num / 8 |
| 700 | &jz(&label("pw_pos_finish")); |
| 701 | |
| 702 | &set_label("pw_pos_loop",0); |
| 703 | |
| 704 | for ($i=0; $i<8; $i++) |
| 705 | { |
| 706 | &comment("dl>0 Round $i"); |
| 707 | |
| 708 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 709 | &sub($tmp1,$c); |
| 710 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 711 | &jnc(&label("pw_nc".$i)); |
| 712 | } |
| 713 | |
| 714 | &comment(""); |
| 715 | &add($a,32); |
| 716 | &add($r,32); |
| 717 | &sub($num,8); |
| 718 | &jnz(&label("pw_pos_loop")); |
| 719 | |
| 720 | &set_label("pw_pos_finish",0); |
| 721 | &mov($num,&wparam(4)); # get dl |
| 722 | &and($num,7); |
| 723 | &jz(&label("pw_end")); |
| 724 | |
| 725 | for ($i=0; $i<7; $i++) |
| 726 | { |
| 727 | &comment("dl>0 Tail Round $i"); |
| 728 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 729 | &sub($tmp1,$c); |
| 730 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 731 | &jnc(&label("pw_tail_nc".$i)); |
| 732 | &dec($num) if ($i != 6); |
| 733 | &jz(&label("pw_end")) if ($i != 6); |
| 734 | } |
| 735 | &mov($c,1); |
| 736 | &jmp(&label("pw_end")); |
| 737 | |
| 738 | &set_label("pw_nc_loop",0); |
| 739 | for ($i=0; $i<8; $i++) |
| 740 | { |
| 741 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 742 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 743 | &set_label("pw_nc".$i,0); |
| 744 | } |
| 745 | |
| 746 | &comment(""); |
| 747 | &add($a,32); |
| 748 | &add($r,32); |
| 749 | &sub($num,8); |
| 750 | &jnz(&label("pw_nc_loop")); |
| 751 | |
| 752 | &mov($num,&wparam(4)); # get dl |
| 753 | &and($num,7); |
| 754 | &jz(&label("pw_nc_end")); |
| 755 | |
| 756 | for ($i=0; $i<7; $i++) |
| 757 | { |
| 758 | &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| 759 | &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| 760 | &set_label("pw_tail_nc".$i,0); |
| 761 | &dec($num) if ($i != 6); |
| 762 | &jz(&label("pw_nc_end")) if ($i != 6); |
| 763 | } |
| 764 | |
| 765 | &set_label("pw_nc_end",0); |
| 766 | &mov($c,0); |
| 767 | |
| 768 | &set_label("pw_end",0); |
| 769 | |
| 770 | # &mov("eax",$c); # $c is "eax" |
| 771 | |
| 772 | &function_end($name); |
| 773 | } |
| 774 | |