+++ /dev/null
-#!/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]);
- }
projects / openssl.git / commitdiff