# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
#
-push(@INC,"perlasm","../../perlasm");
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../perlasm");
require "x86asm.pl";
require "cbc.pl";
require "desboth.pl";
$L="edi";
$R="esi";
-
-&external_label("des_SPtrans");
-&des_encrypt("des_encrypt",1);
-&des_encrypt("des_encrypt2",0);
-&des_encrypt3("des_encrypt3",1);
-&des_encrypt3("des_decrypt3",0);
-&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
-&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
+$trans="ebp";
+$small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
+# one can discuss setting this variable to 1 unconditionally, as
+# the folded loop is only 3% slower than unrolled, but >7 times smaller
+
+&DES_encrypt_internal();
+&DES_decrypt_internal();
+&DES_encrypt("DES_encrypt1",1);
+&DES_encrypt("DES_encrypt2",0);
+&DES_encrypt3("DES_encrypt3",1);
+&DES_encrypt3("DES_decrypt3",0);
+&cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
+&cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
+&DES_SPtrans();
&asm_finish();
-sub des_encrypt
+sub DES_encrypt_internal()
+ {
+ &function_begin_B("_x86_DES_encrypt");
+
+ if ($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($name,"EXTRN _des_SPtrans:DWORD");
+ &function_begin_B($name);
&push("esi");
&push("edi");
&comment("");
&comment("Load the 2 words");
- $ks="ebp";
if ($do_ip)
{
&rotl($L,3);
}
- &mov( $ks, &wparam(1) );
- &cmp("ebx","0");
- &je(&label("start_decrypt"));
-
- for ($i=0; $i<16; $i+=2)
- {
- &comment("");
- &comment("Round $i");
- &D_ENCRYPT($i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
-
- &comment("");
- &comment("Round ".sprintf("%d",$i+1));
- &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
- }
- &jmp(&label("end"));
-
- &set_label("start_decrypt");
+ # PIC-ification:-)
+ &picmeup($trans,"DES_SPtrans");
- for ($i=15; $i>0; $i-=2)
- {
- &comment("");
- &comment("Round $i");
- &D_ENCRYPT(15-$i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
- &comment("");
- &comment("Round ".sprintf("%d",$i-1));
- &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
- }
+ &mov( "ecx", &wparam(1) );
- &set_label("end");
+ &cmp("ebx","0");
+ &je(&label("decrypt"));
+ &call("_x86_DES_encrypt");
+ &jmp(&label("done"));
+ &set_label("decrypt");
+ &call("_x86_DES_decrypt");
+ &set_label("done");
if ($do_ip)
{
sub D_ENCRYPT
{
- local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_;
+ local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
- &mov( $u, &DWP(&n2a($S*4),$ks,"",0));
+ &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
&xor( $tmp1, $tmp1);
- &mov( $t, &DWP(&n2a(($S+1)*4),$ks,"",0));
+ &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 );
- &mov( $ks, &DWP(" $desSP",$tmp1,"",0));
+ &xor( $L, &DWP(" ",$trans,$tmp1,0));
&movb( &LB($tmp1), &LB($t) );
- &xor( $L, $ks);
- &mov( $ks, &DWP("0x200+$desSP",$tmp2,"",0));
- &xor( $L, $ks); ######
+ &xor( $L, &DWP("0x200",$trans,$tmp2,0));
&movb( &LB($tmp2), &HB($t) );
&shr( $u, 16);
- &mov( $ks, &DWP("0x100+$desSP",$tmp1,"",0));
- &xor( $L, $ks); ######
+ &xor( $L, &DWP("0x100",$trans,$tmp1,0));
&movb( &LB($tmp1), &HB($u) );
&shr( $t, 16);
- &mov( $ks, &DWP("0x300+$desSP",$tmp2,"",0));
- &xor( $L, $ks);
- &mov( $ks, &wparam(1) );
+ &xor( $L, &DWP("0x300",$trans,$tmp2,0));
&movb( &LB($tmp2), &HB($t) );
&and( $u, "0xff" );
&and( $t, "0xff" );
- &mov( $tmp1, &DWP("0x600+$desSP",$tmp1,"",0));
- &xor( $L, $tmp1);
- &mov( $tmp1, &DWP("0x700+$desSP",$tmp2,"",0));
- &xor( $L, $tmp1);
- &mov( $tmp1, &DWP("0x400+$desSP",$u,"",0));
- &xor( $L, $tmp1);
- &mov( $tmp1, &DWP("0x500+$desSP",$t,"",0));
- &xor( $L, $tmp1);
+ &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
&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, $a );
&rotr($tt , 4);
}
+sub DES_SPtrans
+ {
+ &public_label("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 / openssl.git / blobdiff