| Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | #!/usr/local/bin/perl |
| 2 | # x86 assember |
| 3 | |
| 4 | sub bn_sqr_words |
| 5 | { |
| 6 | local($name)=@_; |
| 7 | |
| 8 | &function_begin($name,""); |
| 9 | |
| 10 | &comment(""); |
| 11 | $r="esi"; |
| 12 | $a="edi"; |
| 13 | $num="ebx"; |
| 14 | |
| 15 | &mov($r,&wparam(0)); # |
| 16 | &mov($a,&wparam(1)); # |
| 17 | &mov($num,&wparam(2)); # |
| 18 | |
| 19 | &and($num,0xfffffff8); # num / 8 |
| 20 | &jz(&label("sw_finish")); |
| 21 | |
| 22 | &set_label("sw_loop",0); |
| 23 | for ($i=0; $i<32; $i+=4) |
| 24 | { |
| 25 | &comment("Round $i"); |
| 26 | &mov("eax",&DWP($i,$a,"",0)); # *a |
| 27 | # XXX |
| 28 | &mul("eax"); # *a * *a |
| 29 | &mov(&DWP($i*2,$r,"",0),"eax"); # |
| 30 | &mov(&DWP($i*2+4,$r,"",0),"edx");# |
| 31 | } |
| 32 | |
| 33 | &comment(""); |
| 34 | &add($a,32); |
| 35 | &add($r,64); |
| 36 | &sub($num,8); |
| 37 | &jnz(&label("sw_loop")); |
| 38 | |
| 39 | &set_label("sw_finish",0); |
| 40 | &mov($num,&wparam(2)); # get num |
| 41 | &and($num,7); |
| 42 | &jz(&label("sw_end")); |
| 43 | |
| 44 | for ($i=0; $i<7; $i++) |
| 45 | { |
| 46 | &comment("Tail Round $i"); |
| 47 | &mov("eax",&DWP($i*4,$a,"",0)); # *a |
| 48 | # XXX |
| 49 | &mul("eax"); # *a * *a |
| 50 | &mov(&DWP($i*8,$r,"",0),"eax"); # |
| 51 | &dec($num) if ($i != 7-1); |
| 52 | &mov(&DWP($i*8+4,$r,"",0),"edx"); |
| 53 | &jz(&label("sw_end")) if ($i != 7-1); |
| 54 | } |
| 55 | &set_label("sw_end",0); |
| 56 | |
| 57 | &function_end($name); |
| 58 | } |
| 59 | |
| 60 | 1; |