2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27 
  28 /
  29 / In-line functions for amd64 kernels.
  30 /
  31 
  32 /
  33 / return current thread pointer
  34 /
  35 / NOTE: the "0x18" should be replaced by the computed value of the
  36 /       offset of "cpu_thread" from the beginning of the struct cpu.
  37 /       Including "assym.h" does not work, however, since that stuff
  38 /       is PSM-specific and is only visible to the 'unix' build anyway.
  39 /       Same with current cpu pointer, where "0xc" should be replaced
  40 /       by the computed value of the offset of "cpu_self".
  41 /       Ugh -- what a disaster.
  42 /
  43         .inline threadp,0
  44         movq    %gs:0x18, %rax
  45         .end
  46 
  47 /

  61 /
  62 / convert ipl to spl.  This is the identity function for i86
  63 /
  64         .inline ipltospl,0
  65         movq    %rdi, %rax
  66         .end
  67 
  68 /
  69 / find the low order bit in a word
  70 /
  71         .inline lowbit,4
  72         movq    $-1, %rax
  73         bsfq    %rdi, %rax
  74         incq    %rax
  75         .end
  76 
  77 /
  78 / Networking byte order functions (too bad, Intel has the wrong byte order)
  79 /
  80 










  81         .inline htonl,4
  82         movl    %edi, %eax
  83         bswap   %eax
  84         .end
  85 
  86         .inline ntohl,4
  87         movl    %edi, %eax
  88         bswap   %eax
  89         .end
  90 
  91         .inline htons,4
  92         movl    %edi, %eax
  93         bswap   %eax
  94         shrl    $16, %eax
  95         .end
  96 
  97         .inline ntohs,4
  98         movl    %edi, %eax
  99         bswap   %eax
 100         shrl    $16, %eax

   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 


  26 /
  27 / In-line functions for amd64 kernels.
  28 /
  29 
  30 /
  31 / return current thread pointer
  32 /
  33 / NOTE: the "0x18" should be replaced by the computed value of the
  34 /       offset of "cpu_thread" from the beginning of the struct cpu.
  35 /       Including "assym.h" does not work, however, since that stuff
  36 /       is PSM-specific and is only visible to the 'unix' build anyway.
  37 /       Same with current cpu pointer, where "0xc" should be replaced
  38 /       by the computed value of the offset of "cpu_self".
  39 /       Ugh -- what a disaster.
  40 /
  41         .inline threadp,0
  42         movq    %gs:0x18, %rax
  43         .end
  44 
  45 /

  59 /
  60 / convert ipl to spl.  This is the identity function for i86
  61 /
  62         .inline ipltospl,0
  63         movq    %rdi, %rax
  64         .end
  65 
  66 /
  67 / find the low order bit in a word
  68 /
  69         .inline lowbit,4
  70         movq    $-1, %rax
  71         bsfq    %rdi, %rax
  72         incq    %rax
  73         .end
  74 
  75 /
  76 / Networking byte order functions (too bad, Intel has the wrong byte order)
  77 /
  78 
  79         .inline htonll,4
  80         movq    %rdi, %rax
  81         bswapq  %rax
  82         .end
  83 
  84         .inline ntohll,4
  85         movq    %rdi, %rax
  86         bswapq  %rax
  87         .end
  88 
  89         .inline htonl,4
  90         movl    %edi, %eax
  91         bswap   %eax
  92         .end
  93 
  94         .inline ntohl,4
  95         movl    %edi, %eax
  96         bswap   %eax
  97         .end
  98 
  99         .inline htons,4
 100         movl    %edi, %eax
 101         bswap   %eax
 102         shrl    $16, %eax
 103         .end
 104 
 105         .inline ntohs,4
 106         movl    %edi, %eax
 107         bswap   %eax
 108         shrl    $16, %eax