| #! /usr/bin/env perl |
| # Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| |
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| push(@INC,"${dir}","${dir}../../../perlasm"); |
| require "x86asm.pl"; |
| |
| $output = pop; |
| open STDOUT,">$output"; |
| |
| &asm_init($ARGV[0]); |
| |
| $sse2=1; |
| |
| &bn_mul_add_words("bn_mul_add_words"); |
| &bn_mul_words("bn_mul_words"); |
| &bn_sqr_add_words("bn_sqr_add_words"); |
| &bn_add_words("bn_add_words"); |
| &bn_sub_words("bn_sub_words"); |
| |
| &asm_finish(); |
| |
| close STDOUT or die "error closing STDOUT: $!"; |
| |
| sub bn_mul_add_words |
| { |
| local($name)=@_; |
| |
| &function_begin_B($name); |
| |
| $r="eax"; |
| $a="edx"; |
| $c="ecx"; |
| |
| if ($sse2) { |
| &mov($r,&wparam(0)); |
| &mov($a,&wparam(1)); |
| &mov($c,&wparam(2)); |
| &movd("mm0",&wparam(3)); # mm0 = w |
| &pxor("mm1","mm1"); # mm1 = carry_in |
| &jmp(&label("maw_sse2_entry")); |
| |
| &set_label("maw_sse2_unrolled",16); |
| &movd("mm3",&DWP(0,$r,"",0)); # mm3 = r[0] |
| &paddq("mm1","mm3"); # mm1 = carry_in + r[0] |
| &movd("mm2",&DWP(0,$a,"",0)); # mm2 = a[0] |
| &pmuludq("mm2","mm0"); # mm2 = w*a[0] |
| &movd("mm4",&DWP(4,$a,"",0)); # mm4 = a[1] |
| &pmuludq("mm4","mm0"); # mm4 = w*a[1] |
| &movd("mm6",&DWP(8,$a,"",0)); # mm6 = a[2] |
| &pmuludq("mm6","mm0"); # mm6 = w*a[2] |
| &movd("mm7",&DWP(12,$a,"",0)); # mm7 = a[3] |
| &pmuludq("mm7","mm0"); # mm7 = w*a[3] |
| &paddq("mm1","mm2"); # mm1 = carry_in + r[0] + w*a[0] |
| &movd("mm3",&DWP(4,$r,"",0)); # mm3 = r[1] |
| &paddq("mm3","mm4"); # mm3 = r[1] + w*a[1] |
| &movd("mm5",&DWP(8,$r,"",0)); # mm5 = r[2] |
| &paddq("mm5","mm6"); # mm5 = r[2] + w*a[2] |
| &movd("mm4",&DWP(12,$r,"",0)); # mm4 = r[3] |
| &paddq("mm7","mm4"); # mm7 = r[3] + w*a[3] |
| &movd(&DWP(0,$r,"",0),"mm1"); |
| &movd("mm2",&DWP(16,$a,"",0)); # mm2 = a[4] |
| &pmuludq("mm2","mm0"); # mm2 = w*a[4] |
| &psrlq("mm1",32); # mm1 = carry0 |
| &movd("mm4",&DWP(20,$a,"",0)); # mm4 = a[5] |
| &pmuludq("mm4","mm0"); # mm4 = w*a[5] |
| &paddq("mm1","mm3"); # mm1 = carry0 + r[1] + w*a[1] |
| &movd("mm6",&DWP(24,$a,"",0)); # mm6 = a[6] |
| &pmuludq("mm6","mm0"); # mm6 = w*a[6] |
| &movd(&DWP(4,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry1 |
| &movd("mm3",&DWP(28,$a,"",0)); # mm3 = a[7] |
| &add($a,32); |
| &pmuludq("mm3","mm0"); # mm3 = w*a[7] |
| &paddq("mm1","mm5"); # mm1 = carry1 + r[2] + w*a[2] |
| &movd("mm5",&DWP(16,$r,"",0)); # mm5 = r[4] |
| &paddq("mm2","mm5"); # mm2 = r[4] + w*a[4] |
| &movd(&DWP(8,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry2 |
| &paddq("mm1","mm7"); # mm1 = carry2 + r[3] + w*a[3] |
| &movd("mm5",&DWP(20,$r,"",0)); # mm5 = r[5] |
| &paddq("mm4","mm5"); # mm4 = r[5] + w*a[5] |
| &movd(&DWP(12,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry3 |
| &paddq("mm1","mm2"); # mm1 = carry3 + r[4] + w*a[4] |
| &movd("mm5",&DWP(24,$r,"",0)); # mm5 = r[6] |
| &paddq("mm6","mm5"); # mm6 = r[6] + w*a[6] |
| &movd(&DWP(16,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry4 |
| &paddq("mm1","mm4"); # mm1 = carry4 + r[5] + w*a[5] |
| &movd("mm5",&DWP(28,$r,"",0)); # mm5 = r[7] |
| &paddq("mm3","mm5"); # mm3 = r[7] + w*a[7] |
| &movd(&DWP(20,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry5 |
| &paddq("mm1","mm6"); # mm1 = carry5 + r[6] + w*a[6] |
| &movd(&DWP(24,$r,"",0),"mm1"); |
| &psrlq("mm1",32); # mm1 = carry6 |
| &paddq("mm1","mm3"); # mm1 = carry6 + r[7] + w*a[7] |
| &movd(&DWP(28,$r,"",0),"mm1"); |
| &lea($r,&DWP(32,$r)); |
| &psrlq("mm1",32); # mm1 = carry_out |
| |
| &sub($c,8); |
| &jz(&label("maw_sse2_exit")); |
| &set_label("maw_sse2_entry"); |
| &test($c,0xfffffff8); |
| &jnz(&label("maw_sse2_unrolled")); |
| |
| &set_label("maw_sse2_loop",4); |
| &movd("mm2",&DWP(0,$a)); # mm2 = a[i] |
| &movd("mm3",&DWP(0,$r)); # mm3 = r[i] |
| &pmuludq("mm2","mm0"); # a[i] *= w |
| &lea($a,&DWP(4,$a)); |
| &paddq("mm1","mm3"); # carry += r[i] |
| &paddq("mm1","mm2"); # carry += a[i]*w |
| &movd(&DWP(0,$r),"mm1"); # r[i] = carry_low |
| &sub($c,1); |
| &psrlq("mm1",32); # carry = carry_high |
| &lea($r,&DWP(4,$r)); |
| &jnz(&label("maw_sse2_loop")); |
| &set_label("maw_sse2_exit"); |
| &movd("eax","mm1"); # c = carry_out |
| &emms(); |
| &ret(); |
| } |
| &function_end($name); |
| } |
| |
| sub bn_mul_words |
| { |
| local($name)=@_; |
| |
| &function_begin_B($name); |
| |
| $r="eax"; |
| $a="edx"; |
| $c="ecx"; |
| |
| if ($sse2) { |
| &mov($r,&wparam(0)); |
| &mov($a,&wparam(1)); |
| &mov($c,&wparam(2)); |
| &movd("mm0",&wparam(3)); # mm0 = w |
| &pxor("mm1","mm1"); # mm1 = carry = 0 |
| |
| &set_label("mw_sse2_loop",16); |
| &movd("mm2",&DWP(0,$a)); # mm2 = a[i] |
| &pmuludq("mm2","mm0"); # a[i] *= w |
| &lea($a,&DWP(4,$a)); |
| &paddq("mm1","mm2"); # carry += a[i]*w |
| &movd(&DWP(0,$r),"mm1"); # r[i] = carry_low |
| &sub($c,1); |
| &psrlq("mm1",32); # carry = carry_high |
| &lea($r,&DWP(4,$r)); |
| &jnz(&label("mw_sse2_loop")); |
| |
| &movd("eax","mm1"); # return carry |
| &emms(); |
| &ret(); |
| } |
| &function_end($name); |
| } |
| |
| sub bn_sqr_add_words |
| { |
| local($name)=@_; |
| |
| &function_begin_B($name); |
| |
| $r="eax"; |
| $a="edx"; |
| $c="ecx"; |
| |
| if ($sse2) { |
| &mov($r,&wparam(0)); |
| &mov($a,&wparam(1)); |
| &mov($c,&wparam(2)); |
| &pxor("mm1","mm1"); # mm1 = carry_in |
| |
| &set_label("sqr_sse2_loop",16); |
| &movd("mm0",&DWP(0,$a)); # mm0 = a[i] |
| &movd("mm2",&DWP(0,$r,"",0)); # mm2 = r[i] |
| &movd("mm3",&DWP(4,$r,"",0)); # mm3 = r[i+1] |
| &pmuludq("mm0","mm0"); # a[i] *= a[i] |
| &lea($a,&DWP(4,$a)); # a++ |
| &paddq("mm1","mm0"); # carry += a[i] * a[i] |
| &paddq("mm1","mm2"); # carry += r[i] |
| &movd(&DWP(0,$r), "mm1"); |
| &psrlq("mm1",32); # carry >>= 32 |
| &paddq("mm1","mm3"); # carry += r[i+1] |
| &movd(&DWP(4,$r), "mm1"); |
| &psrlq("mm1",32); # carry >>= 32 |
| &sub($c,1); |
| &lea($r,&DWP(8,$r)); # r += 2 |
| &jnz(&label("sqr_sse2_loop")); |
| |
| &emms(); |
| &ret(); |
| } |
| &function_end($name); |
| } |
| |
| sub bn_add_words |
| { |
| local($name)=@_; |
| |
| &function_begin($name,""); |
| |
| &comment(""); |
| $a="esi"; |
| $b="edi"; |
| $c="eax"; |
| $r="ebx"; |
| $tmp1="ecx"; |
| $tmp2="edx"; |
| $num="ebp"; |
| |
| &mov($r,&wparam(0)); # get r |
| &mov($a,&wparam(1)); # get a |
| &mov($b,&wparam(2)); # get b |
| &mov($num,&wparam(3)); # get num |
| &xor($c,$c); # clear carry |
| &and($num,0xfffffff8); # num / 8 |
| |
| &jz(&label("aw_finish")); |
| |
| &set_label("aw_loop",0); |
| for ($i=0; $i<8; $i++) |
| { |
| &comment("Round $i"); |
| |
| &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| &add($tmp1,$c); |
| &mov($c,0); |
| &adc($c,$c); |
| &add($tmp1,$tmp2); |
| &adc($c,0); |
| &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| } |
| |
| &comment(""); |
| &add($a,32); |
| &add($b,32); |
| &add($r,32); |
| &sub($num,8); |
| &jnz(&label("aw_loop")); |
| |
| &set_label("aw_finish",0); |
| &mov($num,&wparam(3)); # get num |
| &and($num,7); |
| &jz(&label("aw_end")); |
| |
| for ($i=0; $i<7; $i++) |
| { |
| &comment("Tail Round $i"); |
| &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| &mov($tmp2,&DWP($i*4,$b,"",0));# *b |
| &add($tmp1,$c); |
| &mov($c,0); |
| &adc($c,$c); |
| &add($tmp1,$tmp2); |
| &adc($c,0); |
| &dec($num) if ($i != 6); |
| &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| &jz(&label("aw_end")) if ($i != 6); |
| } |
| &set_label("aw_end",0); |
| |
| # &mov("eax",$c); # $c is "eax" |
| |
| &function_end($name); |
| } |
| |
| sub bn_sub_words |
| { |
| local($name)=@_; |
| |
| &function_begin($name,""); |
| |
| &comment(""); |
| $a="esi"; |
| $b="edi"; |
| $c="eax"; |
| $r="ebx"; |
| $tmp1="ecx"; |
| $tmp2="edx"; |
| $num="ebp"; |
| |
| &mov($r,&wparam(0)); # get r |
| &mov($a,&wparam(1)); # get a |
| &mov($b,&wparam(2)); # get b |
| &mov($num,&wparam(3)); # get num |
| &xor($c,$c); # clear carry |
| &and($num,0xfffffff8); # num / 8 |
| |
| &jz(&label("aw_finish")); |
| |
| &set_label("aw_loop",0); |
| for ($i=0; $i<8; $i++) |
| { |
| &comment("Round $i"); |
| |
| &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| &mov($tmp2,&DWP($i*4,$b,"",0)); # *b |
| &sub($tmp1,$c); |
| &mov($c,0); |
| &adc($c,$c); |
| &sub($tmp1,$tmp2); |
| &adc($c,0); |
| &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| } |
| |
| &comment(""); |
| &add($a,32); |
| &add($b,32); |
| &add($r,32); |
| &sub($num,8); |
| &jnz(&label("aw_loop")); |
| |
| &set_label("aw_finish",0); |
| &mov($num,&wparam(3)); # get num |
| &and($num,7); |
| &jz(&label("aw_end")); |
| |
| for ($i=0; $i<7; $i++) |
| { |
| &comment("Tail Round $i"); |
| &mov($tmp1,&DWP($i*4,$a,"",0)); # *a |
| &mov($tmp2,&DWP($i*4,$b,"",0));# *b |
| &sub($tmp1,$c); |
| &mov($c,0); |
| &adc($c,$c); |
| &sub($tmp1,$tmp2); |
| &adc($c,0); |
| &dec($num) if ($i != 6); |
| &mov(&DWP($i*4,$r,"",0),$tmp1); # *r |
| &jz(&label("aw_end")) if ($i != 6); |
| } |
| &set_label("aw_end",0); |
| |
| # &mov("eax",$c); # $c is "eax" |
| |
| &function_end($name); |
| } |
