From f861b1d4335d4017953938160c7e4e0df9af5a7b Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Thu, 27 Feb 2014 14:19:19 +0100
Subject: rc4/asm/rc4-586.pl: allow for 386-only build.

---
 crypto/rc4/Makefile       | 2 +-
 crypto/rc4/asm/rc4-586.pl | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

(limited to 'crypto/rc4')

diff --git a/crypto/rc4/Makefile b/crypto/rc4/Makefile
index 3f5aaea226..e2bbaa6617 100644
--- a/crypto/rc4/Makefile
+++ b/crypto/rc4/Makefile
@@ -42,7 +42,7 @@ lib:	$(LIBOBJ)
 	@touch lib
 
 rc4-586.s:	asm/rc4-586.pl ../perlasm/x86asm.pl
-	$(PERL) asm/rc4-586.pl $(PERLASM_SCHEME) $(CFLAGS) > $@
+	$(PERL) asm/rc4-586.pl $(PERLASM_SCHEME) $(CFLAGS) $(PROCESSOR) > $@
 
 rc4-x86_64.s: asm/rc4-x86_64.pl
 	$(PERL) asm/rc4-x86_64.pl $(PERLASM_SCHEME) > $@
diff --git a/crypto/rc4/asm/rc4-586.pl b/crypto/rc4/asm/rc4-586.pl
index 6a3a686082..f906e093d7 100644
--- a/crypto/rc4/asm/rc4-586.pl
+++ b/crypto/rc4/asm/rc4-586.pl
@@ -63,7 +63,7 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 push(@INC,"${dir}","${dir}../../perlasm");
 require "x86asm.pl";
 
-&asm_init($ARGV[0],"rc4-586.pl");
+&asm_init($ARGV[0],"rc4-586.pl",$x86only = $ARGV[$#ARGV] eq "386");
 
 $xx="eax";
 $yy="ebx";
@@ -187,8 +187,11 @@ if ($alt=0) {
 	&and	($ty,-4);		# how many 4-byte chunks?
 	&jz	(&label("loop1"));
 
-	&test	($ty,-8);
 	&mov	(&wparam(3),$out);	# $out as accumulator in these loops
+					if ($x86only) {
+	&jmp	(&label("go4loop4"));
+					} else {
+	&test	($ty,-8);
 	&jz	(&label("go4loop4"));
 
 	&picmeup($out,"OPENSSL_ia32cap_P");
@@ -231,6 +234,7 @@ if ($alt=0) {
 	&cmp	($inp,&wparam(1));	# compare to input+len
 	&je	(&label("done"));
 	&jmp	(&label("loop1"));
+					}
 
 &set_label("go4loop4",16);
 	&lea	($ty,&DWP(-4,$inp,$ty));
-- 
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