sal/osl/unx/asm/interlck_x86.s

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: interlck_x86.s,v $
  10  * $Revision: 1.4 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31
  32 .section   .text,"ax"
  33  .globl   osl_incrementInterlockedCount
  34
  35 osl_incrementInterlockedCount:
  36
  37     push       %ebp
  38     mov        %esp,%ebp
  39     push       %ebx
  40     call       1f
  41 1:
  42     pop        %ebx
  43     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
  44     mov        8(%ebp),%ecx
  45     mov        $1,%eax
  46     mov        osl_isSingleCPU@GOT(%ebx),%edx
  47     cmp        $0,(%edx)
  48     je         2f
  49     xadd       %eax,(%ecx)
  50     jmp        3f
  51 2:
  52     lock
  53     xadd       %eax,(%ecx)
  54 3:
  55     inc        %eax
  56     pop        %ebx
  57     mov        %ebp,%esp
  58     pop        %ebp
  59     ret
  60
  61  .type  osl_incrementInterlockedCount,@function
  62  .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
  63
  64 .section   .text,"ax"
  65  .globl   osl_decrementInterlockedCount
  66
  67 osl_decrementInterlockedCount:
  68
  69     push       %ebp
  70     mov        %esp,%ebp
  71     push       %ebx
  72     call       1f
  73 1:
  74     pop        %ebx
  75     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
  76     mov        8(%ebp),%ecx
  77     orl        $-1,%eax
  78     mov        osl_isSingleCPU@GOT(%ebx),%edx
  79     cmp        $0,(%edx)
  80     je         2f
  81     xadd       %eax,(%ecx)
  82     jmp        3f
  83 2:
  84     lock
  85     xadd       %eax,(%ecx)
  86 3:
  87     dec        %eax
  88     pop        %ebx
  89     mov        %ebp,%esp
  90     pop        %ebp
  91     ret
  92
  93  .type  osl_decrementInterlockedCount,@function
  94  .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
  95