xref: /AOO41X/main/sal/osl/unx/asm/interlck_x86.s (revision b2937f997bda0a05141a2d862a64f7be893955b7) 
1/**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements.  See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership.  The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License.  You may obtain a copy of the License at
10 *
11 *   http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied.  See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24
25.section   .text,"ax"
26 .globl   osl_incrementInterlockedCount
27
28osl_incrementInterlockedCount:
29
30    push       %ebp
31    mov        %esp,%ebp
32    push       %ebx
33    call       1f
341:
35    pop        %ebx
36    add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
37    mov        8(%ebp),%ecx
38    mov        $1,%eax
39    mov        osl_isSingleCPU@GOT(%ebx),%edx
40    cmp        $0,(%edx)
41    je         2f
42    xadd       %eax,(%ecx)
43    jmp        3f
442:
45    lock
46    xadd       %eax,(%ecx)
473:
48    inc        %eax
49    pop        %ebx
50    mov        %ebp,%esp
51    pop        %ebp
52    ret
53
54 .type  osl_incrementInterlockedCount,@function
55 .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
56
57.section   .text,"ax"
58 .globl   osl_decrementInterlockedCount
59
60osl_decrementInterlockedCount:
61
62    push       %ebp
63    mov        %esp,%ebp
64    push       %ebx
65    call       1f
661:
67    pop        %ebx
68    add        $_GLOBAL_OFFSET_TABLE_+0x1,%ebx
69    mov        8(%ebp),%ecx
70    orl        $-1,%eax
71    mov        osl_isSingleCPU@GOT(%ebx),%edx
72    cmp        $0,(%edx)
73    je         2f
74    xadd       %eax,(%ecx)
75    jmp        3f
762:
77    lock
78    xadd       %eax,(%ecx)
793:
80    dec        %eax
81    pop        %ebx
82    mov        %ebp,%esp
83    pop        %ebp
84    ret
85
86 .type  osl_decrementInterlockedCount,@function
87 .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
88
89