--- /dev/null
+#!/usr/local/bin/perl
+#
+# The inner loop instruction sequence and the IP/FP modifications are from
+# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
+#
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+require "desboth.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+&asm_init($ARGV[0],"des-586.pl");
+
+$L="edi";
+$R="esi";
+$trans="ebp";
+$small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
+# one can discuss setting this variable to 1 unconditionally, as
+# the folded loop is only 3% slower than unrolled, but >7 times smaller
+
+&public_label("DES_SPtrans");
+
+&DES_encrypt_internal();
+&DES_decrypt_internal();
+&DES_encrypt("DES_encrypt1",1);
+&DES_encrypt("DES_encrypt2",0);
+&DES_encrypt3("DES_encrypt3",1);
+&DES_encrypt3("DES_decrypt3",0);
+&cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
+&cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
+&DES_SPtrans();
+
+&asm_finish();
+
+sub DES_encrypt_internal()
+ {
+ &function_begin_B("_x86_DES_encrypt");
+
+ if ($small_footprint)
+ {
+ &lea("edx",&DWP(128,"ecx"));
+ &push("edx");
+ &push("ecx");
+ &set_label("eloop");
+ &D_ENCRYPT(0,$L,$R,0,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("");
+ &D_ENCRYPT(1,$R,$L,2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("");
+ &add("ecx",16);
+ &cmp("ecx",&swtmp(1));
+ &mov(&swtmp(0),"ecx");
+ &jb(&label("eloop"));
+ &add("esp",8);
+ }
+ else
+ {
+ &push("ecx");
+ for ($i=0; $i<16; $i+=2)
+ {
+ &comment("Round $i");
+ &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("Round ".sprintf("%d",$i+1));
+ &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ }
+ &add("esp",4);
+ }
+ &ret();
+
+ &function_end_B("_x86_DES_encrypt");
+ }
+
+sub DES_decrypt_internal()
+ {
+ &function_begin_B("_x86_DES_decrypt");
+
+ if ($small_footprint)
+ {
+ &push("ecx");
+ &lea("ecx",&DWP(128,"ecx"));
+ &push("ecx");
+ &set_label("dloop");
+ &D_ENCRYPT(0,$L,$R,-2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("");
+ &D_ENCRYPT(1,$R,$L,-4,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("");
+ &sub("ecx",16);
+ &cmp("ecx",&swtmp(1));
+ &mov(&swtmp(0),"ecx");
+ &ja(&label("dloop"));
+ &add("esp",8);
+ }
+ else
+ {
+ &push("ecx");
+ for ($i=15; $i>0; $i-=2)
+ {
+ &comment("Round $i");
+ &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ &comment("Round ".sprintf("%d",$i-1));
+ &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
+ }
+ &add("esp",4);
+ }
+ &ret();
+
+ &function_end_B("_x86_DES_decrypt");
+ }
+
+sub DES_encrypt
+ {
+ local($name,$do_ip)=@_;
+
+ &function_begin_B($name);
+
+ &push("esi");
+ &push("edi");
+
+ &comment("");
+ &comment("Load the 2 words");
+
+ if ($do_ip)
+ {
+ &mov($R,&wparam(0));
+ &xor( "ecx", "ecx" );
+
+ &push("ebx");
+ &push("ebp");
+
+ &mov("eax",&DWP(0,$R,"",0));
+ &mov("ebx",&wparam(2)); # get encrypt flag
+ &mov($L,&DWP(4,$R,"",0));
+ &comment("");
+ &comment("IP");
+ &IP_new("eax",$L,$R,3);
+ }
+ else
+ {
+ &mov("eax",&wparam(0));
+ &xor( "ecx", "ecx" );
+
+ &push("ebx");
+ &push("ebp");
+
+ &mov($R,&DWP(0,"eax","",0));
+ &mov("ebx",&wparam(2)); # get encrypt flag
+ &rotl($R,3);
+ &mov($L,&DWP(4,"eax","",0));
+ &rotl($L,3);
+ }
+
+ # PIC-ification:-)
+ &call (&label("pic_point"));
+ &set_label("pic_point");
+ &blindpop($trans);
+ &lea ($trans,&DWP(&label("DES_SPtrans")."-".&label("pic_point"),$trans));
+
+ &mov( "ecx", &wparam(1) );
+
+ &cmp("ebx","0");
+ &je(&label("decrypt"));
+ &call("_x86_DES_encrypt");
+ &jmp(&label("done"));
+ &set_label("decrypt");
+ &call("_x86_DES_decrypt");
+ &set_label("done");
+
+ if ($do_ip)
+ {
+ &comment("");
+ &comment("FP");
+ &mov("edx",&wparam(0));
+ &FP_new($L,$R,"eax",3);
+
+ &mov(&DWP(0,"edx","",0),"eax");
+ &mov(&DWP(4,"edx","",0),$R);
+ }
+ else
+ {
+ &comment("");
+ &comment("Fixup");
+ &rotr($L,3); # r
+ &mov("eax",&wparam(0));
+ &rotr($R,3); # l
+ &mov(&DWP(0,"eax","",0),$L);
+ &mov(&DWP(4,"eax","",0),$R);
+ }
+
+ &pop("ebp");
+ &pop("ebx");
+ &pop("edi");
+ &pop("esi");
+ &ret();
+
+ &function_end_B($name);
+ }
+
+sub D_ENCRYPT
+ {
+ local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
+
+ &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
+ &xor( $tmp1, $tmp1);
+ &mov( $t, &DWP(&n2a(($S+1)*4),$tmp2,"",0));
+ &xor( $u, $R);
+ &xor( $tmp2, $tmp2);
+ &xor( $t, $R);
+ &and( $u, "0xfcfcfcfc" );
+ &and( $t, "0xcfcfcfcf" );
+ &movb( &LB($tmp1), &LB($u) );
+ &movb( &LB($tmp2), &HB($u) );
+ &rotr( $t, 4 );
+ &xor( $L, &DWP(" ",$trans,$tmp1,0));
+ &movb( &LB($tmp1), &LB($t) );
+ &xor( $L, &DWP("0x200",$trans,$tmp2,0));
+ &movb( &LB($tmp2), &HB($t) );
+ &shr( $u, 16);
+ &xor( $L, &DWP("0x100",$trans,$tmp1,0));
+ &movb( &LB($tmp1), &HB($u) );
+ &shr( $t, 16);
+ &xor( $L, &DWP("0x300",$trans,$tmp2,0));
+ &movb( &LB($tmp2), &HB($t) );
+ &and( $u, "0xff" );
+ &and( $t, "0xff" );
+ &xor( $L, &DWP("0x600",$trans,$tmp1,0));
+ &xor( $L, &DWP("0x700",$trans,$tmp2,0));
+ &mov( $tmp2, $wp1 );
+ &xor( $L, &DWP("0x400",$trans,$u,0));
+ &xor( $L, &DWP("0x500",$trans,$t,0));
+ }
+
+sub n2a
+ {
+ sprintf("%d",$_[0]);
+ }
+
+# now has a side affect of rotating $a by $shift
+sub R_PERM_OP
+ {
+ local($a,$b,$tt,$shift,$mask,$last)=@_;
+
+ &rotl( $a, $shift ) if ($shift != 0);
+ &mov( $tt, $a );
+ &xor( $a, $b );
+ &and( $a, $mask );
+ # This can never succeed, and besides it is difficult to see what the
+ # idea was - Ben 13 Feb 99
+ if (!$last eq $b)
+ {
+ &xor( $b, $a );
+ &xor( $tt, $a );
+ }
+ else
+ {
+ &xor( $tt, $a );
+ &xor( $b, $a );
+ }
+ &comment("");
+ }
+
+sub IP_new
+ {
+ local($l,$r,$tt,$lr)=@_;
+
+ &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
+ &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
+ &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
+ &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
+ &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
+
+ if ($lr != 3)
+ {
+ if (($lr-3) < 0)
+ { &rotr($tt, 3-$lr); }
+ else { &rotl($tt, $lr-3); }
+ }
+ if ($lr != 2)
+ {
+ if (($lr-2) < 0)
+ { &rotr($r, 2-$lr); }
+ else { &rotl($r, $lr-2); }
+ }
+ }
+
+sub FP_new
+ {
+ local($l,$r,$tt,$lr)=@_;
+
+ if ($lr != 2)
+ {
+ if (($lr-2) < 0)
+ { &rotl($r, 2-$lr); }
+ else { &rotr($r, $lr-2); }
+ }
+ if ($lr != 3)
+ {
+ if (($lr-3) < 0)
+ { &rotl($l, 3-$lr); }
+ else { &rotr($l, $lr-3); }
+ }
+
+ &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
+ &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
+ &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
+ &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
+ &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
+ &rotr($tt , 4);
+ }
+
+sub DES_SPtrans
+ {
+ &set_label("DES_SPtrans",64);
+ &data_word(0x02080800, 0x00080000, 0x02000002, 0x02080802);
+ &data_word(0x02000000, 0x00080802, 0x00080002, 0x02000002);
+ &data_word(0x00080802, 0x02080800, 0x02080000, 0x00000802);
+ &data_word(0x02000802, 0x02000000, 0x00000000, 0x00080002);
+ &data_word(0x00080000, 0x00000002, 0x02000800, 0x00080800);
+ &data_word(0x02080802, 0x02080000, 0x00000802, 0x02000800);
+ &data_word(0x00000002, 0x00000800, 0x00080800, 0x02080002);
+ &data_word(0x00000800, 0x02000802, 0x02080002, 0x00000000);
+ &data_word(0x00000000, 0x02080802, 0x02000800, 0x00080002);
+ &data_word(0x02080800, 0x00080000, 0x00000802, 0x02000800);
+ &data_word(0x02080002, 0x00000800, 0x00080800, 0x02000002);
+ &data_word(0x00080802, 0x00000002, 0x02000002, 0x02080000);
+ &data_word(0x02080802, 0x00080800, 0x02080000, 0x02000802);
+ &data_word(0x02000000, 0x00000802, 0x00080002, 0x00000000);
+ &data_word(0x00080000, 0x02000000, 0x02000802, 0x02080800);
+ &data_word(0x00000002, 0x02080002, 0x00000800, 0x00080802);
+ # nibble 1
+ &data_word(0x40108010, 0x00000000, 0x00108000, 0x40100000);
+ &data_word(0x40000010, 0x00008010, 0x40008000, 0x00108000);
+ &data_word(0x00008000, 0x40100010, 0x00000010, 0x40008000);
+ &data_word(0x00100010, 0x40108000, 0x40100000, 0x00000010);
+ &data_word(0x00100000, 0x40008010, 0x40100010, 0x00008000);
+ &data_word(0x00108010, 0x40000000, 0x00000000, 0x00100010);
+ &data_word(0x40008010, 0x00108010, 0x40108000, 0x40000010);
+ &data_word(0x40000000, 0x00100000, 0x00008010, 0x40108010);
+ &data_word(0x00100010, 0x40108000, 0x40008000, 0x00108010);
+ &data_word(0x40108010, 0x00100010, 0x40000010, 0x00000000);
+ &data_word(0x40000000, 0x00008010, 0x00100000, 0x40100010);
+ &data_word(0x00008000, 0x40000000, 0x00108010, 0x40008010);
+ &data_word(0x40108000, 0x00008000, 0x00000000, 0x40000010);
+ &data_word(0x00000010, 0x40108010, 0x00108000, 0x40100000);
+ &data_word(0x40100010, 0x00100000, 0x00008010, 0x40008000);
+ &data_word(0x40008010, 0x00000010, 0x40100000, 0x00108000);
+ # nibble 2
+ &data_word(0x04000001, 0x04040100, 0x00000100, 0x04000101);
+ &data_word(0x00040001, 0x04000000, 0x04000101, 0x00040100);
+ &data_word(0x04000100, 0x00040000, 0x04040000, 0x00000001);
+ &data_word(0x04040101, 0x00000101, 0x00000001, 0x04040001);
+ &data_word(0x00000000, 0x00040001, 0x04040100, 0x00000100);
+ &data_word(0x00000101, 0x04040101, 0x00040000, 0x04000001);
+ &data_word(0x04040001, 0x04000100, 0x00040101, 0x04040000);
+ &data_word(0x00040100, 0x00000000, 0x04000000, 0x00040101);
+ &data_word(0x04040100, 0x00000100, 0x00000001, 0x00040000);
+ &data_word(0x00000101, 0x00040001, 0x04040000, 0x04000101);
+ &data_word(0x00000000, 0x04040100, 0x00040100, 0x04040001);
+ &data_word(0x00040001, 0x04000000, 0x04040101, 0x00000001);
+ &data_word(0x00040101, 0x04000001, 0x04000000, 0x04040101);
+ &data_word(0x00040000, 0x04000100, 0x04000101, 0x00040100);
+ &data_word(0x04000100, 0x00000000, 0x04040001, 0x00000101);
+ &data_word(0x04000001, 0x00040101, 0x00000100, 0x04040000);
+ # nibble 3
+ &data_word(0x00401008, 0x10001000, 0x00000008, 0x10401008);
+ &data_word(0x00000000, 0x10400000, 0x10001008, 0x00400008);
+ &data_word(0x10401000, 0x10000008, 0x10000000, 0x00001008);
+ &data_word(0x10000008, 0x00401008, 0x00400000, 0x10000000);
+ &data_word(0x10400008, 0x00401000, 0x00001000, 0x00000008);
+ &data_word(0x00401000, 0x10001008, 0x10400000, 0x00001000);
+ &data_word(0x00001008, 0x00000000, 0x00400008, 0x10401000);
+ &data_word(0x10001000, 0x10400008, 0x10401008, 0x00400000);
+ &data_word(0x10400008, 0x00001008, 0x00400000, 0x10000008);
+ &data_word(0x00401000, 0x10001000, 0x00000008, 0x10400000);
+ &data_word(0x10001008, 0x00000000, 0x00001000, 0x00400008);
+ &data_word(0x00000000, 0x10400008, 0x10401000, 0x00001000);
+ &data_word(0x10000000, 0x10401008, 0x00401008, 0x00400000);
+ &data_word(0x10401008, 0x00000008, 0x10001000, 0x00401008);
+ &data_word(0x00400008, 0x00401000, 0x10400000, 0x10001008);
+ &data_word(0x00001008, 0x10000000, 0x10000008, 0x10401000);
+ # nibble 4
+ &data_word(0x08000000, 0x00010000, 0x00000400, 0x08010420);
+ &data_word(0x08010020, 0x08000400, 0x00010420, 0x08010000);
+ &data_word(0x00010000, 0x00000020, 0x08000020, 0x00010400);
+ &data_word(0x08000420, 0x08010020, 0x08010400, 0x00000000);
+ &data_word(0x00010400, 0x08000000, 0x00010020, 0x00000420);
+ &data_word(0x08000400, 0x00010420, 0x00000000, 0x08000020);
+ &data_word(0x00000020, 0x08000420, 0x08010420, 0x00010020);
+ &data_word(0x08010000, 0x00000400, 0x00000420, 0x08010400);
+ &data_word(0x08010400, 0x08000420, 0x00010020, 0x08010000);
+ &data_word(0x00010000, 0x00000020, 0x08000020, 0x08000400);
+ &data_word(0x08000000, 0x00010400, 0x08010420, 0x00000000);
+ &data_word(0x00010420, 0x08000000, 0x00000400, 0x00010020);
+ &data_word(0x08000420, 0x00000400, 0x00000000, 0x08010420);
+ &data_word(0x08010020, 0x08010400, 0x00000420, 0x00010000);
+ &data_word(0x00010400, 0x08010020, 0x08000400, 0x00000420);
+ &data_word(0x00000020, 0x00010420, 0x08010000, 0x08000020);
+ # nibble 5
+ &data_word(0x80000040, 0x00200040, 0x00000000, 0x80202000);
+ &data_word(0x00200040, 0x00002000, 0x80002040, 0x00200000);
+ &data_word(0x00002040, 0x80202040, 0x00202000, 0x80000000);
+ &data_word(0x80002000, 0x80000040, 0x80200000, 0x00202040);
+ &data_word(0x00200000, 0x80002040, 0x80200040, 0x00000000);
+ &data_word(0x00002000, 0x00000040, 0x80202000, 0x80200040);
+ &data_word(0x80202040, 0x80200000, 0x80000000, 0x00002040);
+ &data_word(0x00000040, 0x00202000, 0x00202040, 0x80002000);
+ &data_word(0x00002040, 0x80000000, 0x80002000, 0x00202040);
+ &data_word(0x80202000, 0x00200040, 0x00000000, 0x80002000);
+ &data_word(0x80000000, 0x00002000, 0x80200040, 0x00200000);
+ &data_word(0x00200040, 0x80202040, 0x00202000, 0x00000040);
+ &data_word(0x80202040, 0x00202000, 0x00200000, 0x80002040);
+ &data_word(0x80000040, 0x80200000, 0x00202040, 0x00000000);
+ &data_word(0x00002000, 0x80000040, 0x80002040, 0x80202000);
+ &data_word(0x80200000, 0x00002040, 0x00000040, 0x80200040);
+ # nibble 6
+ &data_word(0x00004000, 0x00000200, 0x01000200, 0x01000004);
+ &data_word(0x01004204, 0x00004004, 0x00004200, 0x00000000);
+ &data_word(0x01000000, 0x01000204, 0x00000204, 0x01004000);
+ &data_word(0x00000004, 0x01004200, 0x01004000, 0x00000204);
+ &data_word(0x01000204, 0x00004000, 0x00004004, 0x01004204);
+ &data_word(0x00000000, 0x01000200, 0x01000004, 0x00004200);
+ &data_word(0x01004004, 0x00004204, 0x01004200, 0x00000004);
+ &data_word(0x00004204, 0x01004004, 0x00000200, 0x01000000);
+ &data_word(0x00004204, 0x01004000, 0x01004004, 0x00000204);
+ &data_word(0x00004000, 0x00000200, 0x01000000, 0x01004004);
+ &data_word(0x01000204, 0x00004204, 0x00004200, 0x00000000);
+ &data_word(0x00000200, 0x01000004, 0x00000004, 0x01000200);
+ &data_word(0x00000000, 0x01000204, 0x01000200, 0x00004200);
+ &data_word(0x00000204, 0x00004000, 0x01004204, 0x01000000);
+ &data_word(0x01004200, 0x00000004, 0x00004004, 0x01004204);
+ &data_word(0x01000004, 0x01004200, 0x01004000, 0x00004004);
+ # nibble 7
+ &data_word(0x20800080, 0x20820000, 0x00020080, 0x00000000);
+ &data_word(0x20020000, 0x00800080, 0x20800000, 0x20820080);
+ &data_word(0x00000080, 0x20000000, 0x00820000, 0x00020080);
+ &data_word(0x00820080, 0x20020080, 0x20000080, 0x20800000);
+ &data_word(0x00020000, 0x00820080, 0x00800080, 0x20020000);
+ &data_word(0x20820080, 0x20000080, 0x00000000, 0x00820000);
+ &data_word(0x20000000, 0x00800000, 0x20020080, 0x20800080);
+ &data_word(0x00800000, 0x00020000, 0x20820000, 0x00000080);
+ &data_word(0x00800000, 0x00020000, 0x20000080, 0x20820080);
+ &data_word(0x00020080, 0x20000000, 0x00000000, 0x00820000);
+ &data_word(0x20800080, 0x20020080, 0x20020000, 0x00800080);
+ &data_word(0x20820000, 0x00000080, 0x00800080, 0x20020000);
+ &data_word(0x20820080, 0x00800000, 0x20800000, 0x20000080);
+ &data_word(0x00820000, 0x00020080, 0x20020080, 0x20800000);
+ &data_word(0x00000080, 0x20820000, 0x00820080, 0x00000000);
+ &data_word(0x20000000, 0x20800080, 0x00020000, 0x00820080);
+ }
projects / cassiopeia.git / blobdiff