From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl | 122 +++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl

(limited to 'openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl')

diff --git a/openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl b/openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl
new file mode 100644
index 0000000..e3e1c64
--- /dev/null
+++ b/openssl-1.1.0h/crypto/rc5/asm/rc5-586.pl
@@ -0,0 +1,122 @@
+#! /usr/bin/env perl
+# Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+$output = pop;
+open STDOUT,">$output";
+
+&asm_init($ARGV[0],"rc5-586.pl");
+
+$RC5_MAX_ROUNDS=16;
+$RC5_32_OFF=($RC5_MAX_ROUNDS+2)*4;
+$A="edi";
+$B="esi";
+$S="ebp";
+$tmp1="eax";
+$r="ebx";
+$tmpc="ecx";
+$tmp4="edx";
+
+&RC5_32_encrypt("RC5_32_encrypt",1);
+&RC5_32_encrypt("RC5_32_decrypt",0);
+&cbc("RC5_32_cbc_encrypt","RC5_32_encrypt","RC5_32_decrypt",0,4,5,3,-1,-1);
+&asm_finish();
+
+close STDOUT;
+
+sub RC5_32_encrypt
+	{
+	local($name,$enc)=@_;
+
+	&function_begin_B($name,"");
+
+	&comment("");
+
+	&push("ebp");
+	 &push("esi");
+	&push("edi");
+	 &mov($tmp4,&wparam(0));
+	&mov($S,&wparam(1));
+
+	&comment("Load the 2 words");
+	 &mov($A,&DWP(0,$tmp4,"",0));
+	&mov($B,&DWP(4,$tmp4,"",0));
+
+	&push($r);
+	 &mov($r,	&DWP(0,$S,"",0));
+
+	# encrypting part
+
+	if ($enc)
+		{
+		 &add($A,	&DWP(4+0,$S,"",0));
+		&add($B,	&DWP(4+4,$S,"",0));
+
+		for ($i=0; $i<$RC5_MAX_ROUNDS; $i++)
+			{
+			 &xor($A,	$B);
+			&mov($tmp1,	&DWP(12+$i*8,$S,"",0));
+			 &mov($tmpc,	$B);
+			&rotl($A,	&LB("ecx"));
+			&add($A,	$tmp1);
+
+			 &xor($B,	$A);
+			&mov($tmp1,	&DWP(16+$i*8,$S,"",0));
+			 &mov($tmpc,	$A);
+			&rotl($B,	&LB("ecx"));
+			&add($B,	$tmp1);
+			if (($i == 7) || ($i == 11))
+				{
+			 &cmp($r,	$i+1);
+			&je(&label("rc5_exit"));
+				}
+			}
+		}
+	else
+		{
+		 &cmp($r,	12);
+		&je(&label("rc5_dec_12"));
+		 &cmp($r,	8);
+		&je(&label("rc5_dec_8"));
+		for ($i=$RC5_MAX_ROUNDS; $i > 0; $i--)
+			{
+			&set_label("rc5_dec_$i") if ($i == 12) || ($i == 8);
+			 &mov($tmp1,	&DWP($i*8+8,$S,"",0));
+			&sub($B,	$tmp1);
+			 &mov($tmpc,	$A);
+			&rotr($B,	&LB("ecx"));
+			&xor($B,	$A);
+
+			 &mov($tmp1,	&DWP($i*8+4,$S,"",0));
+			&sub($A,	$tmp1);
+			 &mov($tmpc,	$B);
+			&rotr($A,	&LB("ecx"));
+			&xor($A,	$B);
+			}
+		 &sub($B,	&DWP(4+4,$S,"",0));
+		&sub($A,	&DWP(4+0,$S,"",0));
+		}
+
+	&set_label("rc5_exit");
+	 &mov(&DWP(0,$tmp4,"",0),$A);
+	&mov(&DWP(4,$tmp4,"",0),$B);
+
+	 &pop("ebx");
+	&pop("edi");
+	 &pop("esi");
+	&pop("ebp");
+	 &ret();
+	&function_end_B($name);
+	}
+
+
-- 
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