From: Niels Möller <nisse@lysator.liu.se>
Date: Mon, 18 Oct 2004 19:36:18 +0000 (+0200)
Subject: (nettle_arcfour_crypt): Replace incb ->
X-Git-Tag: nettle_1.11_release_20041026~39
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=504dff42695fe60d43453af4de6deec6f7e0949c;p=thirdparty%2Fnettle.git

(nettle_arcfour_crypt): Replace incb ->
incl + andl, to improve speed on PPro and PII. Suggested by
Fredrik Olsson.

Rev: src/nettle/x86/arcfour-crypt.asm:1.7
---

diff --git a/x86/arcfour-crypt.asm b/x86/arcfour-crypt.asm
index 7b2b2e67..6b99cc57 100644
--- a/x86/arcfour-crypt.asm
+++ b/x86/arcfour-crypt.asm
@@ -50,7 +50,8 @@ nettle_arcfour_crypt:
 	movzbl  256(%ebp), %eax		C  i
 	movzbl  257(%ebp), %ebx		C  j
 .Lloop:
-	incb	%al
+	incl	%eax
+	andl	$0xff, %eax
 	movzbl  (%ebp, %eax), %ecx	C  si. Clears high bytes
 	addb    %cl, %bl
 	movb    (%ebp, %ebx), %ch	C  sj