384 lines
7 KiB
Raku
384 lines
7 KiB
Raku
#!/usr/local/bin/perl
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push(@INC,"perlasm","../../perlasm");
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require "x86asm.pl";
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&asm_init($ARGV[0],$0);
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&bn_mul_add_words("bn_mul_add_words");
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&bn_mul_words("bn_mul_words");
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&bn_sqr_words("bn_sqr_words");
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&bn_div_words("bn_div_words");
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&bn_add_words("bn_add_words");
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&bn_sub_words("bn_sub_words");
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&asm_finish();
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sub bn_mul_add_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&comment("");
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$Low="eax";
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$High="edx";
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$a="ebx";
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$w="ebp";
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$r="edi";
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$c="esi";
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&xor($c,$c); # clear carry
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&mov($r,&wparam(0)); #
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&mov("ecx",&wparam(2)); #
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&mov($a,&wparam(1)); #
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&and("ecx",0xfffffff8); # num / 8
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&mov($w,&wparam(3)); #
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&push("ecx"); # Up the stack for a tmp variable
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&jz(&label("maw_finish"));
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&set_label("maw_loop",0);
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&mov(&swtmp(0),"ecx"); #
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for ($i=0; $i<32; $i+=4)
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{
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&comment("Round $i");
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&mov("eax",&DWP($i,$a,"",0)); # *a
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&mul($w); # *a * w
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&add("eax",$c); # L(t)+= *r
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&mov($c,&DWP($i,$r,"",0)); # L(t)+= *r
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&adc("edx",0); # H(t)+=carry
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&add("eax",$c); # L(t)+=c
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&adc("edx",0); # H(t)+=carry
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&mov(&DWP($i,$r,"",0),"eax"); # *r= L(t);
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&mov($c,"edx"); # c= H(t);
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}
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&comment("");
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&mov("ecx",&swtmp(0)); #
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&add($a,32);
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&add($r,32);
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&sub("ecx",8);
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&jnz(&label("maw_loop"));
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&set_label("maw_finish",0);
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&mov("ecx",&wparam(2)); # get num
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&and("ecx",7);
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&jnz(&label("maw_finish2")); # helps branch prediction
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&jmp(&label("maw_end"));
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&set_label("maw_finish2",1);
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for ($i=0; $i<7; $i++)
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{
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&comment("Tail Round $i");
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&mov("eax",&DWP($i*4,$a,"",0));# *a
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&mul($w); # *a * w
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&add("eax",$c); # L(t)+=c
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&mov($c,&DWP($i*4,$r,"",0)); # L(t)+= *r
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&adc("edx",0); # H(t)+=carry
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&add("eax",$c);
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&adc("edx",0); # H(t)+=carry
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&dec("ecx") if ($i != 7-1);
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&mov(&DWP($i*4,$r,"",0),"eax"); # *r= L(t);
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&mov($c,"edx"); # c= H(t);
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&jz(&label("maw_end")) if ($i != 7-1);
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}
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&set_label("maw_end",0);
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&mov("eax",$c);
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&pop("ecx"); # clear variable from
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&function_end($name);
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}
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sub bn_mul_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&comment("");
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$Low="eax";
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$High="edx";
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$a="ebx";
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$w="ecx";
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$r="edi";
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$c="esi";
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$num="ebp";
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&xor($c,$c); # clear carry
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&mov($r,&wparam(0)); #
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&mov($a,&wparam(1)); #
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&mov($num,&wparam(2)); #
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&mov($w,&wparam(3)); #
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&and($num,0xfffffff8); # num / 8
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&jz(&label("mw_finish"));
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&set_label("mw_loop",0);
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for ($i=0; $i<32; $i+=4)
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{
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&comment("Round $i");
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&mov("eax",&DWP($i,$a,"",0)); # *a
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&mul($w); # *a * w
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&add("eax",$c); # L(t)+=c
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# XXX
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&adc("edx",0); # H(t)+=carry
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&mov(&DWP($i,$r,"",0),"eax"); # *r= L(t);
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&mov($c,"edx"); # c= H(t);
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}
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&comment("");
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&add($a,32);
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&add($r,32);
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&sub($num,8);
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&jz(&label("mw_finish"));
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&jmp(&label("mw_loop"));
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&set_label("mw_finish",0);
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&mov($num,&wparam(2)); # get num
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&and($num,7);
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&jnz(&label("mw_finish2"));
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&jmp(&label("mw_end"));
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&set_label("mw_finish2",1);
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for ($i=0; $i<7; $i++)
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{
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&comment("Tail Round $i");
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&mov("eax",&DWP($i*4,$a,"",0));# *a
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&mul($w); # *a * w
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&add("eax",$c); # L(t)+=c
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# XXX
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&adc("edx",0); # H(t)+=carry
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&mov(&DWP($i*4,$r,"",0),"eax");# *r= L(t);
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&mov($c,"edx"); # c= H(t);
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&dec($num) if ($i != 7-1);
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&jz(&label("mw_end")) if ($i != 7-1);
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}
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&set_label("mw_end",0);
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&mov("eax",$c);
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&function_end($name);
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}
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sub bn_sqr_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&comment("");
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$r="esi";
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$a="edi";
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$num="ebx";
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&mov($r,&wparam(0)); #
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&mov($a,&wparam(1)); #
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&mov($num,&wparam(2)); #
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&and($num,0xfffffff8); # num / 8
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&jz(&label("sw_finish"));
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&set_label("sw_loop",0);
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for ($i=0; $i<32; $i+=4)
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{
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&comment("Round $i");
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&mov("eax",&DWP($i,$a,"",0)); # *a
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# XXX
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&mul("eax"); # *a * *a
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&mov(&DWP($i*2,$r,"",0),"eax"); #
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&mov(&DWP($i*2+4,$r,"",0),"edx");#
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}
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&comment("");
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&add($a,32);
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&add($r,64);
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&sub($num,8);
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&jnz(&label("sw_loop"));
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&set_label("sw_finish",0);
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&mov($num,&wparam(2)); # get num
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&and($num,7);
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&jz(&label("sw_end"));
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for ($i=0; $i<7; $i++)
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{
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&comment("Tail Round $i");
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&mov("eax",&DWP($i*4,$a,"",0)); # *a
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# XXX
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&mul("eax"); # *a * *a
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&mov(&DWP($i*8,$r,"",0),"eax"); #
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&dec($num) if ($i != 7-1);
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&mov(&DWP($i*8+4,$r,"",0),"edx");
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&jz(&label("sw_end")) if ($i != 7-1);
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}
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&set_label("sw_end",0);
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&function_end($name);
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}
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sub bn_div_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&mov("edx",&wparam(0)); #
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&mov("eax",&wparam(1)); #
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&mov("ebx",&wparam(2)); #
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&div("ebx");
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&function_end($name);
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}
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sub bn_add_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&comment("");
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$a="esi";
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$b="edi";
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$c="eax";
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$r="ebx";
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$tmp1="ecx";
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$tmp2="edx";
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$num="ebp";
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&mov($r,&wparam(0)); # get r
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&mov($a,&wparam(1)); # get a
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&mov($b,&wparam(2)); # get b
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&mov($num,&wparam(3)); # get num
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&xor($c,$c); # clear carry
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&and($num,0xfffffff8); # num / 8
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&jz(&label("aw_finish"));
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&set_label("aw_loop",0);
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for ($i=0; $i<8; $i++)
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{
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&comment("Round $i");
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&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
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&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
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&add($tmp1,$c);
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&mov($c,0);
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&adc($c,$c);
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&add($tmp1,$tmp2);
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&adc($c,0);
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&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
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}
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&comment("");
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&add($a,32);
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&add($b,32);
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&add($r,32);
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&sub($num,8);
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&jnz(&label("aw_loop"));
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&set_label("aw_finish",0);
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&mov($num,&wparam(3)); # get num
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&and($num,7);
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&jz(&label("aw_end"));
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for ($i=0; $i<7; $i++)
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{
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&comment("Tail Round $i");
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&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
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&mov($tmp2,&DWP($i*4,$b,"",0));# *b
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&add($tmp1,$c);
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&mov($c,0);
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&adc($c,$c);
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&add($tmp1,$tmp2);
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&adc($c,0);
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&dec($num) if ($i != 6);
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&mov(&DWP($i*4,$r,"",0),$tmp1); # *a
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&jz(&label("aw_end")) if ($i != 6);
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}
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&set_label("aw_end",0);
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# &mov("eax",$c); # $c is "eax"
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&function_end($name);
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}
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sub bn_sub_words
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{
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local($name)=@_;
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&function_begin($name,"");
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&comment("");
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$a="esi";
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$b="edi";
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$c="eax";
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$r="ebx";
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$tmp1="ecx";
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$tmp2="edx";
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$num="ebp";
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&mov($r,&wparam(0)); # get r
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&mov($a,&wparam(1)); # get a
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&mov($b,&wparam(2)); # get b
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&mov($num,&wparam(3)); # get num
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&xor($c,$c); # clear carry
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&and($num,0xfffffff8); # num / 8
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&jz(&label("aw_finish"));
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&set_label("aw_loop",0);
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for ($i=0; $i<8; $i++)
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{
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&comment("Round $i");
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&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
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&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
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&sub($tmp1,$c);
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&mov($c,0);
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&adc($c,$c);
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&sub($tmp1,$tmp2);
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&adc($c,0);
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&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
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}
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&comment("");
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&add($a,32);
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&add($b,32);
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&add($r,32);
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&sub($num,8);
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&jnz(&label("aw_loop"));
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&set_label("aw_finish",0);
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&mov($num,&wparam(3)); # get num
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&and($num,7);
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&jz(&label("aw_end"));
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for ($i=0; $i<7; $i++)
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{
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&comment("Tail Round $i");
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&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
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&mov($tmp2,&DWP($i*4,$b,"",0));# *b
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&sub($tmp1,$c);
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&mov($c,0);
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&adc($c,$c);
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&sub($tmp1,$tmp2);
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&adc($c,0);
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&dec($num) if ($i != 6);
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&mov(&DWP($i*4,$r,"",0),$tmp1); # *a
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&jz(&label("aw_end")) if ($i != 6);
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}
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&set_label("aw_end",0);
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# &mov("eax",$c); # $c is "eax"
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&function_end($name);
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}
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