xref: /aoo42x/main/sal/osl/unx/asm/interlck_x86.s (revision b5da552c)
1*b5da552cSAndrew Rist /**************************************************************
2cdf0e10cSrcweir  *
3*b5da552cSAndrew Rist  * Licensed to the Apache Software Foundation (ASF) under one
4*b5da552cSAndrew Rist  * or more contributor license agreements.  See the NOTICE file
5*b5da552cSAndrew Rist  * distributed with this work for additional information
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7*b5da552cSAndrew Rist  * to you under the Apache License, Version 2.0 (the
8*b5da552cSAndrew Rist  * "License"); you may not use this file except in compliance
9*b5da552cSAndrew Rist  * with the License.  You may obtain a copy of the License at
10*b5da552cSAndrew Rist  *
11*b5da552cSAndrew Rist  *   http://www.apache.org/licenses/LICENSE-2.0
12*b5da552cSAndrew Rist  *
13*b5da552cSAndrew Rist  * Unless required by applicable law or agreed to in writing,
14*b5da552cSAndrew Rist  * software distributed under the License is distributed on an
15*b5da552cSAndrew Rist  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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21*b5da552cSAndrew Rist 
22*b5da552cSAndrew Rist 
23cdf0e10cSrcweir 
24cdf0e10cSrcweir 
25cdf0e10cSrcweir .section   .text,"ax"
26cdf0e10cSrcweir  .globl   osl_incrementInterlockedCount
27cdf0e10cSrcweir 
28cdf0e10cSrcweir osl_incrementInterlockedCount:
29cdf0e10cSrcweir 
30cdf0e10cSrcweir     push       %ebp
31cdf0e10cSrcweir     mov        %esp,%ebp
32cdf0e10cSrcweir     push       %ebx
33cdf0e10cSrcweir     call       1f
34cdf0e10cSrcweir 1:
35cdf0e10cSrcweir     pop        %ebx
36cdf0e10cSrcweir     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
37cdf0e10cSrcweir     mov        8(%ebp),%ecx
38cdf0e10cSrcweir     mov        $1,%eax
39cdf0e10cSrcweir     mov        osl_isSingleCPU@GOT(%ebx),%edx
40cdf0e10cSrcweir     cmp        $0,(%edx)
41cdf0e10cSrcweir     je         2f
42cdf0e10cSrcweir     xadd       %eax,(%ecx)
43cdf0e10cSrcweir     jmp        3f
44cdf0e10cSrcweir 2:
45cdf0e10cSrcweir     lock
46cdf0e10cSrcweir     xadd       %eax,(%ecx)
47cdf0e10cSrcweir 3:
48cdf0e10cSrcweir     inc        %eax
49cdf0e10cSrcweir     pop        %ebx
50cdf0e10cSrcweir     mov        %ebp,%esp
51cdf0e10cSrcweir     pop        %ebp
52cdf0e10cSrcweir     ret
53cdf0e10cSrcweir 
54cdf0e10cSrcweir  .type  osl_incrementInterlockedCount,@function
55cdf0e10cSrcweir  .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
56cdf0e10cSrcweir 
57cdf0e10cSrcweir .section   .text,"ax"
58cdf0e10cSrcweir  .globl   osl_decrementInterlockedCount
59cdf0e10cSrcweir 
60cdf0e10cSrcweir osl_decrementInterlockedCount:
61cdf0e10cSrcweir 
62cdf0e10cSrcweir     push       %ebp
63cdf0e10cSrcweir     mov        %esp,%ebp
64cdf0e10cSrcweir     push       %ebx
65cdf0e10cSrcweir     call       1f
66cdf0e10cSrcweir 1:
67cdf0e10cSrcweir     pop        %ebx
68cdf0e10cSrcweir     add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
69cdf0e10cSrcweir     mov        8(%ebp),%ecx
70cdf0e10cSrcweir     orl        $-1,%eax
71cdf0e10cSrcweir     mov        osl_isSingleCPU@GOT(%ebx),%edx
72cdf0e10cSrcweir     cmp        $0,(%edx)
73cdf0e10cSrcweir     je         2f
74cdf0e10cSrcweir     xadd       %eax,(%ecx)
75cdf0e10cSrcweir     jmp        3f
76cdf0e10cSrcweir 2:
77cdf0e10cSrcweir     lock
78cdf0e10cSrcweir     xadd       %eax,(%ecx)
79cdf0e10cSrcweir 3:
80cdf0e10cSrcweir     dec        %eax
81cdf0e10cSrcweir     pop        %ebx
82cdf0e10cSrcweir     mov        %ebp,%esp
83cdf0e10cSrcweir     pop        %ebp
84cdf0e10cSrcweir     ret
85cdf0e10cSrcweir 
86cdf0e10cSrcweir  .type  osl_decrementInterlockedCount,@function
87cdf0e10cSrcweir  .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
88cdf0e10cSrcweir 
89