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| (Empty) |
| 1 #!/usr/local/bin/perl | |
| 2 # x86 assember | |
| 3 | |
| 4 sub bn_mul_add_words | |
| 5 { | |
| 6 local($name)=@_; | |
| 7 | |
| 8 &function_begin($name,""); | |
| 9 | |
| 10 &comment(""); | |
| 11 $Low="eax"; | |
| 12 $High="edx"; | |
| 13 $a="ebx"; | |
| 14 $w="ebp"; | |
| 15 $r="edi"; | |
| 16 $c="esi"; | |
| 17 | |
| 18 &xor($c,$c); # clear carry | |
| 19 &mov($r,&wparam(0)); # | |
| 20 | |
| 21 &mov("ecx",&wparam(2)); # | |
| 22 &mov($a,&wparam(1)); # | |
| 23 | |
| 24 &and("ecx",0xfffffff8); # num / 8 | |
| 25 &mov($w,&wparam(3)); # | |
| 26 | |
| 27 &push("ecx"); # Up the stack for a tmp variable | |
| 28 | |
| 29 &jz(&label("maw_finish")); | |
| 30 | |
| 31 &set_label("maw_loop",0); | |
| 32 | |
| 33 &mov(&swtmp(0),"ecx"); # | |
| 34 | |
| 35 for ($i=0; $i<32; $i+=4) | |
| 36 { | |
| 37 &comment("Round $i"); | |
| 38 | |
| 39 &mov("eax",&DWP($i,$a,"",0)); # *a | |
| 40 &mul($w); # *a * w | |
| 41 &add("eax",$c); # L(t)+= *r | |
| 42 &mov($c,&DWP($i,$r,"",0)); # L(t)+= *r | |
| 43 &adc("edx",0); # H(t)+=carry | |
| 44 &add("eax",$c); # L(t)+=c | |
| 45 &adc("edx",0); # H(t)+=carry | |
| 46 &mov(&DWP($i,$r,"",0),"eax"); # *r= L(t); | |
| 47 &mov($c,"edx"); # c= H(t); | |
| 48 } | |
| 49 | |
| 50 &comment(""); | |
| 51 &mov("ecx",&swtmp(0)); # | |
| 52 &add($a,32); | |
| 53 &add($r,32); | |
| 54 &sub("ecx",8); | |
| 55 &jnz(&label("maw_loop")); | |
| 56 | |
| 57 &set_label("maw_finish",0); | |
| 58 &mov("ecx",&wparam(2)); # get num | |
| 59 &and("ecx",7); | |
| 60 &jnz(&label("maw_finish2")); # helps branch prediction | |
| 61 &jmp(&label("maw_end")); | |
| 62 | |
| 63 &set_label("maw_finish2",1); | |
| 64 for ($i=0; $i<7; $i++) | |
| 65 { | |
| 66 &comment("Tail Round $i"); | |
| 67 &mov("eax",&DWP($i*4,$a,"",0));# *a | |
| 68 &mul($w); # *a * w | |
| 69 &add("eax",$c); # L(t)+=c | |
| 70 &mov($c,&DWP($i*4,$r,"",0)); # L(t)+= *r | |
| 71 &adc("edx",0); # H(t)+=carry | |
| 72 &add("eax",$c); | |
| 73 &adc("edx",0); # H(t)+=carry | |
| 74 &dec("ecx") if ($i != 7-1); | |
| 75 &mov(&DWP($i*4,$r,"",0),"eax"); # *r= L(t); | |
| 76 &mov($c,"edx"); # c= H(t); | |
| 77 &jz(&label("maw_end")) if ($i != 7-1); | |
| 78 } | |
| 79 &set_label("maw_end",0); | |
| 80 &mov("eax",$c); | |
| 81 | |
| 82 &pop("ecx"); # clear variable from | |
| 83 | |
| 84 &function_end($name); | |
| 85 } | |
| 86 | |
| 87 1; | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master