Index: openssl/crypto/des/asm/des686.pl |
=================================================================== |
--- openssl/crypto/des/asm/des686.pl (revision 105093) |
+++ openssl/crypto/des/asm/des686.pl (working copy) |
@@ -1,230 +0,0 @@ |
-#!/usr/local/bin/perl |
- |
-$prog="des686.pl"; |
- |
-# base code is in microsft |
-# op dest, source |
-# format. |
-# |
- |
-# WILL NOT WORK ANYMORE WITH desboth.pl |
-require "desboth.pl"; |
- |
-if ( ($ARGV[0] eq "elf")) |
- { require "x86unix.pl"; } |
-elsif ( ($ARGV[0] eq "a.out")) |
- { $aout=1; require "x86unix.pl"; } |
-elsif ( ($ARGV[0] eq "sol")) |
- { $sol=1; require "x86unix.pl"; } |
-elsif ( ($ARGV[0] eq "cpp")) |
- { $cpp=1; require "x86unix.pl"; } |
-elsif ( ($ARGV[0] eq "win32")) |
- { require "x86ms.pl"; } |
-else |
- { |
- print STDERR <<"EOF"; |
-Pick one target type from |
- elf - linux, FreeBSD etc |
- a.out - old linux |
- sol - x86 solaris |
- cpp - format so x86unix.cpp can be used |
- win32 - Windows 95/Windows NT |
-EOF |
- exit(1); |
- } |
- |
-&comment("Don't even think of reading this code"); |
-&comment("It was automatically generated by $prog"); |
-&comment("Which is a perl program used to generate the x86 assember for"); |
-&comment("any of elf, a.out, Win32, or Solaris"); |
-&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+"); |
-&comment("eric <eay\@cryptsoft.com>"); |
-&comment(""); |
- |
-&file("dx86xxxx"); |
- |
-$L="edi"; |
-$R="esi"; |
- |
-&DES_encrypt("DES_encrypt1",1); |
-&DES_encrypt("DES_encrypt2",0); |
- |
-&DES_encrypt3("DES_encrypt3",1); |
-&DES_encrypt3("DES_decrypt3",0); |
- |
-&file_end(); |
- |
-sub DES_encrypt |
- { |
- local($name,$do_ip)=@_; |
- |
- &function_begin($name,"EXTRN _DES_SPtrans:DWORD"); |
- |
- &comment(""); |
- &comment("Load the 2 words"); |
- &mov("eax",&wparam(0)); |
- &mov($L,&DWP(0,"eax","",0)); |
- &mov($R,&DWP(4,"eax","",0)); |
- |
- $ksp=&wparam(1); |
- |
- if ($do_ip) |
- { |
- &comment(""); |
- &comment("IP"); |
- &IP_new($L,$R,"eax"); |
- } |
- |
- &comment(""); |
- &comment("fixup rotate"); |
- &rotl($R,3); |
- &rotl($L,3); |
- &exch($L,$R); |
- |
- &comment(""); |
- &comment("load counter, key_schedule and enc flag"); |
- &mov("eax",&wparam(2)); # get encrypt flag |
- &mov("ebp",&wparam(1)); # get ks |
- &cmp("eax","0"); |
- &je(&label("start_decrypt")); |
- |
- # encrypting part |
- |
- for ($i=0; $i<16; $i+=2) |
- { |
- &comment(""); |
- &comment("Round $i"); |
- &D_ENCRYPT($L,$R,$i*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx"); |
- |
- &comment(""); |
- &comment("Round ".sprintf("%d",$i+1)); |
- &D_ENCRYPT($R,$L,($i+1)*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx"); |
- } |
- &jmp(&label("end")); |
- |
- &set_label("start_decrypt"); |
- |
- for ($i=15; $i>0; $i-=2) |
- { |
- &comment(""); |
- &comment("Round $i"); |
- &D_ENCRYPT($L,$R,$i*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx"); |
- &comment(""); |
- &comment("Round ".sprintf("%d",$i-1)); |
- &D_ENCRYPT($R,$L,($i-1)*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx"); |
- } |
- |
- &set_label("end"); |
- |
- &comment(""); |
- &comment("Fixup"); |
- &rotr($L,3); # r |
- &rotr($R,3); # l |
- |
- if ($do_ip) |
- { |
- &comment(""); |
- &comment("FP"); |
- &FP_new($R,$L,"eax"); |
- } |
- |
- &mov("eax",&wparam(0)); |
- &mov(&DWP(0,"eax","",0),$L); |
- &mov(&DWP(4,"eax","",0),$R); |
- |
- &function_end($name); |
- } |
- |
- |
-# The logic is to load R into 2 registers and operate on both at the same time. |
-# We also load the 2 R's into 2 more registers so we can do the 'move word down a byte' |
-# while also masking the other copy and doing a lookup. We then also accumulate the |
-# L value in 2 registers then combine them at the end. |
-sub D_ENCRYPT |
- { |
- local($L,$R,$S,$ks,$desSP,$u,$t,$tmp1,$tmp2,$tmp3)=@_; |
- |
- &mov( $u, &DWP(&n2a($S*4),$ks,"",0)); |
- &mov( $t, &DWP(&n2a(($S+1)*4),$ks,"",0)); |
- &xor( $u, $R ); |
- &xor( $t, $R ); |
- &rotr( $t, 4 ); |
- |
- # the numbers at the end of the line are origional instruction order |
- &mov( $tmp2, $u ); # 1 2 |
- &mov( $tmp1, $t ); # 1 1 |
- &and( $tmp2, "0xfc" ); # 1 4 |
- &and( $tmp1, "0xfc" ); # 1 3 |
- &shr( $t, 8 ); # 1 5 |
- &xor( $L, &DWP("0x100+$desSP",$tmp1,"",0)); # 1 7 |
- &shr( $u, 8 ); # 1 6 |
- &mov( $tmp1, &DWP(" $desSP",$tmp2,"",0)); # 1 8 |
- |
- &mov( $tmp2, $u ); # 2 2 |
- &xor( $L, $tmp1 ); # 1 9 |
- &and( $tmp2, "0xfc" ); # 2 4 |
- &mov( $tmp1, $t ); # 2 1 |
- &and( $tmp1, "0xfc" ); # 2 3 |
- &shr( $t, 8 ); # 2 5 |
- &xor( $L, &DWP("0x300+$desSP",$tmp1,"",0)); # 2 7 |
- &shr( $u, 8 ); # 2 6 |
- &mov( $tmp1, &DWP("0x200+$desSP",$tmp2,"",0)); # 2 8 |
- &mov( $tmp2, $u ); # 3 2 |
- |
- &xor( $L, $tmp1 ); # 2 9 |
- &and( $tmp2, "0xfc" ); # 3 4 |
- |
- &mov( $tmp1, $t ); # 3 1 |
- &shr( $u, 8 ); # 3 6 |
- &and( $tmp1, "0xfc" ); # 3 3 |
- &shr( $t, 8 ); # 3 5 |
- &xor( $L, &DWP("0x500+$desSP",$tmp1,"",0)); # 3 7 |
- &mov( $tmp1, &DWP("0x400+$desSP",$tmp2,"",0)); # 3 8 |
- |
- &and( $t, "0xfc" ); # 4 1 |
- &xor( $L, $tmp1 ); # 3 9 |
- |
- &and( $u, "0xfc" ); # 4 2 |
- &xor( $L, &DWP("0x700+$desSP",$t,"",0)); # 4 3 |
- &xor( $L, &DWP("0x600+$desSP",$u,"",0)); # 4 4 |
- } |
- |
-sub PERM_OP |
- { |
- local($a,$b,$tt,$shift,$mask)=@_; |
- |
- &mov( $tt, $a ); |
- &shr( $tt, $shift ); |
- &xor( $tt, $b ); |
- &and( $tt, $mask ); |
- &xor( $b, $tt ); |
- &shl( $tt, $shift ); |
- &xor( $a, $tt ); |
- } |
- |
-sub IP_new |
- { |
- local($l,$r,$tt)=@_; |
- |
- &PERM_OP($r,$l,$tt, 4,"0x0f0f0f0f"); |
- &PERM_OP($l,$r,$tt,16,"0x0000ffff"); |
- &PERM_OP($r,$l,$tt, 2,"0x33333333"); |
- &PERM_OP($l,$r,$tt, 8,"0x00ff00ff"); |
- &PERM_OP($r,$l,$tt, 1,"0x55555555"); |
- } |
- |
-sub FP_new |
- { |
- local($l,$r,$tt)=@_; |
- |
- &PERM_OP($l,$r,$tt, 1,"0x55555555"); |
- &PERM_OP($r,$l,$tt, 8,"0x00ff00ff"); |
- &PERM_OP($l,$r,$tt, 2,"0x33333333"); |
- &PERM_OP($r,$l,$tt,16,"0x0000ffff"); |
- &PERM_OP($l,$r,$tt, 4,"0x0f0f0f0f"); |
- } |
- |
-sub n2a |
- { |
- sprintf("%d",$_[0]); |
- } |