sal/osl/unx/asm/interlck_x86.s

   1 /#
   2  # This file is part of the LibreOffice project.
   3  #
   4  # This Source Code Form is subject to the terms of the Mozilla Public
   5  # License, v. 2.0. If a copy of the MPL was not distributed with this
   6  # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  #
   8  # This file incorporates work covered by the following license notice:
   9  #
  10  #   Licensed to the Apache Software Foundation (ASF) under one or more
  11  #   contributor license agreements. See the NOTICE file distributed
  12  #   with this work for additional information regarding copyright
  13  #   ownership. The ASF licenses this file to you under the Apache
  14  #   License, Version 2.0 (the "License"); you may not use this file
  15  #   except in compliance with the License. You may obtain a copy of
  16  #   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  #/
  18
  19 .section   .text,"ax"
  20  .globl   osl_incrementInterlockedCount
  21
  22 osl_incrementInterlockedCount:
  23
  24     push       %ebp
  25     mov        %esp,%ebp
  26     push       %ebx
  27     call       1f
  28 1:
  29     pop        %ebx
  30     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
  31     mov        8(%ebp),%ecx
  32     mov        $1,%eax
  33     mov        osl_isSingleCPU@GOT(%ebx),%edx
  34     cmp        $0,(%edx)
  35     je         2f
  36     xadd       %eax,(%ecx)
  37     jmp        3f
  38 2:
  39     lock
  40     xadd       %eax,(%ecx)
  41 3:
  42     inc        %eax
  43     pop        %ebx
  44     mov        %ebp,%esp
  45     pop        %ebp
  46     ret
  47
  48  .type  osl_incrementInterlockedCount,@function
  49  .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
  50
  51 .section   .text,"ax"
  52  .globl   osl_decrementInterlockedCount
  53
  54 osl_decrementInterlockedCount:
  55
  56     push       %ebp
  57     mov        %esp,%ebp
  58     push       %ebx
  59     call       1f
  60 1:
  61     pop        %ebx
  62     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
  63     mov        8(%ebp),%ecx
  64     orl        $-1,%eax
  65     mov        osl_isSingleCPU@GOT(%ebx),%edx
  66     cmp        $0,(%edx)
  67     je         2f
  68     xadd       %eax,(%ecx)
  69     jmp        3f
  70 2:
  71     lock
  72     xadd       %eax,(%ecx)
  73 3:
  74     dec        %eax
  75     pop        %ebx
  76     mov        %ebp,%esp
  77     pop        %ebp
  78     ret
  79
  80  .type  osl_decrementInterlockedCount,@function
  81  .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
  82