6189743 Need an ARCFOUR implementation optimized for AMD64

*** 1,12 ****
  /*
   * CDDL HEADER START
   *
   * The contents of this file are subject to the terms of the
!  * Common Development and Distribution License, Version 1.0 only
!  * (the "License").  You may not use this file except in compliance
!  * with the License.
   *
   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   * or http://www.opensolaris.org/os/licensing.
   * See the License for the specific language governing permissions
   * and limitations under the License.
--- 1,11 ----
  /*
   * CDDL HEADER START
   *
   * The contents of this file are subject to the terms of the
!  * Common Development and Distribution License (the "License").
!  * You may not use this file except in compliance with the License.
   *
   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   * or http://www.opensolaris.org/os/licensing.
   * See the License for the specific language governing permissions
   * and limitations under the License.
*** 18,35 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
!  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma ident   "@(#)arcfour_crypt.c    1.5     05/08/23 SMI"
  
  #include "arcfour.h"
  
  /* Initialize the key stream 'key' using the key value */
  void
  arcfour_key_init(ARCFour_key *key, uchar_t *keyval, int keyvallen)
  {
  /* EXPORT DELETE START */
--- 17,42 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
!  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma ident   "@(#)arcfour_crypt.c    1.6     08/01/02 SMI"
  
  #include "arcfour.h"
  
+ #if defined(__amd64)
+ /*
+  * Use hand-tuned, processor-specific assembly version of arcfour_crypt()
+  * for 64-bit x86:
+  */
+ #define USE_PSR_VERSION_OF_ARCFOUR_CRYPT
+ #endif /* __amd64 */
+ 
  /* Initialize the key stream 'key' using the key value */
  void
  arcfour_key_init(ARCFour_key *key, uchar_t *keyval, int keyvallen)
  {
  /* EXPORT DELETE START */
*** 59,70 ****
  
  /* EXPORT DELETE END */
  }
  
  
  /*
!  * Encipher 'in' using 'key.
   * in and out can point to the same location
   */
  void
  arcfour_crypt(ARCFour_key *key, uchar_t *in, uchar_t *out, size_t len)
  {
--- 66,78 ----
  
  /* EXPORT DELETE END */
  }
  
  
+ #if !defined(USE_PSR_VERSION_OF_ARCFOUR_CRYPT)
  /*
!  * Encipher 'in' using 'key'.
   * in and out can point to the same location
   */
  void
  arcfour_crypt(ARCFour_key *key, uchar_t *in, uchar_t *out, size_t len)
  {
*** 128,132 ****
--- 136,141 ----
          }
  #endif  /* sun4u */
  
  /* EXPORT DELETE END */
  }
+ #endif  /* !USE_PSR_VERSION_OF_ARCFOUR_CRYPT */