1 files changed, 127 insertions, 0 deletions
diff --git a/crypto/bf/asm/bf-686.pl b/crypto/bf/asm/bf-686.pl
new file mode 100644
index 000000000000..8e4c25f59847
--- /dev/null
+++ b/crypto/bf/asm/bf-686.pl
@@ -0,0 +1,127 @@
+#!/usr/local/bin/perl
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+&asm_init($ARGV[0],"bf-686.pl");
+
+$BF_ROUNDS=16;
+$BF_OFF=($BF_ROUNDS+2)*4;
+$L="ecx";
+$R="edx";
+$P="edi";
+$tot="esi";
+$tmp1="eax";
+$tmp2="ebx";
+$tmp3="ebp";
+
+&des_encrypt("BF_encrypt",1);
+&des_encrypt("BF_decrypt",0);
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
+
+&asm_finish();
+
+&file_end();
+
+sub des_encrypt
+	{
+	local($name,$enc)=@_;
+
+	&function_begin($name,"");
+
+	&comment("");
+	&comment("Load the 2 words");
+	&mov("eax",&wparam(0));
+	&mov($L,&DWP(0,"eax","",0));
+	&mov($R,&DWP(4,"eax","",0));
+
+	&comment("");
+	&comment("P pointer, s and enc flag");
+	&mov($P,&wparam(1));
+
+	&xor(	$tmp1,	$tmp1);
+	&xor(	$tmp2,	$tmp2);
+
+	# encrypting part
+
+	if ($enc)
+		{
+		&xor($L,&DWP(0,$P,"",0));
+		for ($i=0; $i<$BF_ROUNDS; $i+=2)
+			{
+			&comment("");
+			&comment("Round $i");
+			&BF_ENCRYPT($i+1,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3);
+
+			&comment("");
+			&comment("Round ".sprintf("%d",$i+1));
+			&BF_ENCRYPT($i+2,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3);
+			}
+		&xor($R,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+
+		&mov("eax",&wparam(0));
+		&mov(&DWP(0,"eax","",0),$R);
+		&mov(&DWP(4,"eax","",0),$L);
+		&function_end_A($name);
+		}
+	else
+		{
+		&xor($L,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+		for ($i=$BF_ROUNDS; $i>0; $i-=2)
+			{
+			&comment("");
+			&comment("Round $i");
+			&BF_ENCRYPT($i,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3);
+			&comment("");
+			&comment("Round ".sprintf("%d",$i-1));
+			&BF_ENCRYPT($i-1,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3);
+			}
+		&xor($R,&DWP(0,$P,"",0));
+
+		&mov("eax",&wparam(0));
+		&mov(&DWP(0,"eax","",0),$R);
+		&mov(&DWP(4,"eax","",0),$L);
+		&function_end_A($name);
+		}
+
+	&function_end_B($name);
+	}
+
+sub BF_ENCRYPT
+	{
+	local($i,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3)=@_;
+
+	&rotr(	$R,		16);
+	&mov(	$tot,		&DWP(&n2a($i*4),$P,"",0));
+
+	&movb(	&LB($tmp1),	&HB($R));
+	&movb(	&LB($tmp2),	&LB($R));
+
+	&rotr(	$R,		16);
+	&xor(	$L,		$tot);
+
+	&mov(	$tot,		&DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
+	&mov(	$tmp3,		&DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
+
+	&movb(	&LB($tmp1),	&HB($R));
+	&movb(	&LB($tmp2),	&LB($R));
+
+	&add(	$tot,		$tmp3);
+	&mov(	$tmp1,		&DWP(&n2a($BF_OFF+0x0800),$P,$tmp1,4)); # delay
+
+	&xor(	$tot,		$tmp1);
+	&mov(	$tmp3,		&DWP(&n2a($BF_OFF+0x0C00),$P,$tmp2,4));
+
+	&add(	$tot,		$tmp3);
+	&xor(	$tmp1,		$tmp1);
+
+	&xor(	$L,		$tot);					
+	# delay
+	}
+
+sub n2a
+	{
+	sprintf("%d",$_[0]);
+	}
+