5007142 Add ntohll and htonll to sys/byteorder.h
6717509 Need to use bswap/bswapq for byte swap of 64-bit integer on x32/x64
PSARC 2008/474

*** 17,48 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
!  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
          .file   "byteorder.s"
  
! #include "SYS.h"
  
          /*
!          * NOTE: htonl/ntohl are identical routines, as are htons/ntohs.
!          * As such, they could be implemented as a single routine, using
!          * multiple ALTENTRY/SET_SIZE definitions. We don't do this so
           * that they will have unique addresses, allowing DTrace and
           * other debuggers to tell them apart. 
           */
  
  
  /*
   *      unsigned long htonl( hl )
   *      unsigned long ntohl( hl )
!  *      long hl;
!  *      reverses the byte order of 'uint32_t hl'
   */
          ENTRY(htonl)
          movl    %edi, %eax      /* %eax = hl */
          bswap   %eax            /* reverses the byte order of %eax */
          ret                     /* return (%eax) */
--- 17,66 ----
   * 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.
   */
  
          .file   "byteorder.s"
  
! #include <sys/asm_linkage.h>
  
          /*
!          * NOTE: htonll/ntohll, htonl/ntohl, and htons/ntohs are identical
!          * routines. As such, they could be implemented as a single routine,
!          * using multiple ALTENTRY/SET_SIZE definitions. We don't do this so
           * that they will have unique addresses, allowing DTrace and
           * other debuggers to tell them apart.
           */
  
+ /*
+  *      unsigned long long htonll( hll )
+  *      unsigned long long ntohll( hll )
+  *      unsigned long long hll;
+  *      reverses the byte order of 'uint64_t hll' on little endian machines
+  */
+         ENTRY(htonll)
+         movq    %rdi, %rax      /* %rax = hll */
+         bswapq  %rax            /* reverses the byte order of %rax */
+         ret                     /* return (%rax) */
+         SET_SIZE(htonll)
  
+         ENTRY(ntohll)
+         movq    %rdi, %rax      /* %rax = hll */
+         bswapq  %rax            /* reverses the byte order of %rax */
+         ret                     /* return (%rax) */
+         SET_SIZE(ntohll)
+ 
+ 
  /*
   *      unsigned long htonl( hl )
   *      unsigned long ntohl( hl )
!  *      unsigned long hl;
!  *      reverses the byte order of 'uint32_t hl' on little endian machines
   */
          ENTRY(htonl)
          movl    %edi, %eax      /* %eax = hl */
          bswap   %eax            /* reverses the byte order of %eax */
          ret                     /* return (%eax) */
*** 54,66 ****
          ret                     /* return (%eax) */
          SET_SIZE(ntohl)
  
  /*
   *      unsigned short htons( hs )
!  *      short hs;
!  *
!  *      reverses the byte order in hs.
   */
          ENTRY(htons)
          movl    %edi, %eax      /* %eax = hs */
          bswap   %eax            /* reverses the byte order of %eax */
          shrl    $16, %eax       /* moves high 16-bit to low 16-bit */
--- 72,83 ----
          ret                     /* return (%eax) */
          SET_SIZE(ntohl)
  
  /*
   *      unsigned short htons( hs )
!  *      unsigned short hs;
!  *      reverses the byte order of 'uint16_t hs' on little endian machines.
   */
          ENTRY(htons)
          movl    %edi, %eax      /* %eax = hs */
          bswap   %eax            /* reverses the byte order of %eax */
          shrl    $16, %eax       /* moves high 16-bit to low 16-bit */