1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski #include "system.h"
25*b1cdbd2cSJim Jagielski
26*b1cdbd2cSJim Jagielski #include <osl/interlck.h>
27*b1cdbd2cSJim Jagielski #include <osl/diagnose.h>
28*b1cdbd2cSJim Jagielski
29*b1cdbd2cSJim Jagielski extern int osl_isSingleCPU;
30*b1cdbd2cSJim Jagielski
31*b1cdbd2cSJim Jagielski /* For all Intel x86 above x486 we use a spezial inline assembler implementation.
32*b1cdbd2cSJim Jagielski The main reason is that WIN9? does not return the result of the operation.
33*b1cdbd2cSJim Jagielski Instead there is only returned a value greater than zero is the increment
34*b1cdbd2cSJim Jagielski result is greater than zero, but not the the result of the addition.
35*b1cdbd2cSJim Jagielski For Windows NT the native function could be used, because the correct result
36*b1cdbd2cSJim Jagielski is returned. Beacuse of simpler code maintance and performace reasons we use
37*b1cdbd2cSJim Jagielski on every x86-Windows-Platform the inline assembler implementation.
38*b1cdbd2cSJim Jagielski */
39*b1cdbd2cSJim Jagielski
40*b1cdbd2cSJim Jagielski /*****************************************************************************/
41*b1cdbd2cSJim Jagielski /* osl_incrementInterlockedCount */
42*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_incrementInterlockedCount(oslInterlockedCount * pCount)43*b1cdbd2cSJim Jagielski oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
44*b1cdbd2cSJim Jagielski #ifdef _M_IX86
45*b1cdbd2cSJim Jagielski #ifdef __MINGW32__
46*b1cdbd2cSJim Jagielski {
47*b1cdbd2cSJim Jagielski asm
48*b1cdbd2cSJim Jagielski (
49*b1cdbd2cSJim Jagielski " movl %0, %%ecx\n"
50*b1cdbd2cSJim Jagielski " movl $1, %%eax\n"
51*b1cdbd2cSJim Jagielski " movl %1, %%edx\n"
52*b1cdbd2cSJim Jagielski " cmpl $0, %%edx\n"
53*b1cdbd2cSJim Jagielski " je 1f\n"
54*b1cdbd2cSJim Jagielski " xadd %%eax, (%%ecx)\n"
55*b1cdbd2cSJim Jagielski " jmp 2f\n"
56*b1cdbd2cSJim Jagielski "1:\n"
57*b1cdbd2cSJim Jagielski " lock xadd %%eax, (%%ecx)\n"
58*b1cdbd2cSJim Jagielski "2:\n"
59*b1cdbd2cSJim Jagielski " incl %%eax\n"
60*b1cdbd2cSJim Jagielski ::"m"(pCount),"m"(osl_isSingleCPU)
61*b1cdbd2cSJim Jagielski );
62*b1cdbd2cSJim Jagielski }
63*b1cdbd2cSJim Jagielski #else
64*b1cdbd2cSJim Jagielski #pragma warning(disable: 4035)
65*b1cdbd2cSJim Jagielski {
66*b1cdbd2cSJim Jagielski __asm
67*b1cdbd2cSJim Jagielski {
68*b1cdbd2cSJim Jagielski mov ecx, pCount
69*b1cdbd2cSJim Jagielski mov eax, 1
70*b1cdbd2cSJim Jagielski mov edx, osl_isSingleCPU
71*b1cdbd2cSJim Jagielski cmp edx, 0
72*b1cdbd2cSJim Jagielski je is_not_single
73*b1cdbd2cSJim Jagielski xadd dword ptr [ecx],eax
74*b1cdbd2cSJim Jagielski jmp cont
75*b1cdbd2cSJim Jagielski is_not_single:
76*b1cdbd2cSJim Jagielski lock xadd dword ptr [ecx],eax
77*b1cdbd2cSJim Jagielski cont:
78*b1cdbd2cSJim Jagielski inc eax
79*b1cdbd2cSJim Jagielski }
80*b1cdbd2cSJim Jagielski }
81*b1cdbd2cSJim Jagielski #pragma warning(default: 4035)
82*b1cdbd2cSJim Jagielski #endif
83*b1cdbd2cSJim Jagielski #else
84*b1cdbd2cSJim Jagielski #pragma message("WARNING: Using system InterlockedIncrement")
85*b1cdbd2cSJim Jagielski {
86*b1cdbd2cSJim Jagielski return (InterlockedIncrement(pCount));
87*b1cdbd2cSJim Jagielski }
88*b1cdbd2cSJim Jagielski #endif
89*b1cdbd2cSJim Jagielski
90*b1cdbd2cSJim Jagielski /*****************************************************************************/
91*b1cdbd2cSJim Jagielski /* osl_decrementInterlockedCount */
92*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_decrementInterlockedCount(oslInterlockedCount * pCount)93*b1cdbd2cSJim Jagielski oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
94*b1cdbd2cSJim Jagielski #ifdef _M_IX86
95*b1cdbd2cSJim Jagielski #ifdef __MINGW32__
96*b1cdbd2cSJim Jagielski {
97*b1cdbd2cSJim Jagielski asm
98*b1cdbd2cSJim Jagielski (
99*b1cdbd2cSJim Jagielski " movl %0, %%ecx\n"
100*b1cdbd2cSJim Jagielski " orl $-1, %%eax\n"
101*b1cdbd2cSJim Jagielski " movl %1, %%edx\n"
102*b1cdbd2cSJim Jagielski " cmpl $0, %%edx\n"
103*b1cdbd2cSJim Jagielski " je 1f\n"
104*b1cdbd2cSJim Jagielski " xadd %%eax, (%%ecx)\n"
105*b1cdbd2cSJim Jagielski " jmp 2f\n"
106*b1cdbd2cSJim Jagielski "1:\n"
107*b1cdbd2cSJim Jagielski " lock xadd %%eax, (%%ecx)\n"
108*b1cdbd2cSJim Jagielski "2:\n"
109*b1cdbd2cSJim Jagielski " decl %%eax\n"
110*b1cdbd2cSJim Jagielski ::"m"(pCount),"m"(osl_isSingleCPU)
111*b1cdbd2cSJim Jagielski );
112*b1cdbd2cSJim Jagielski }
113*b1cdbd2cSJim Jagielski #else
114*b1cdbd2cSJim Jagielski #pragma warning(disable: 4035)
115*b1cdbd2cSJim Jagielski {
116*b1cdbd2cSJim Jagielski __asm
117*b1cdbd2cSJim Jagielski {
118*b1cdbd2cSJim Jagielski mov ecx, pCount
119*b1cdbd2cSJim Jagielski or eax, -1
120*b1cdbd2cSJim Jagielski mov edx, osl_isSingleCPU
121*b1cdbd2cSJim Jagielski cmp edx, 0
122*b1cdbd2cSJim Jagielski je is_not_single
123*b1cdbd2cSJim Jagielski xadd dword ptr [ecx],eax
124*b1cdbd2cSJim Jagielski jmp cont
125*b1cdbd2cSJim Jagielski is_not_single:
126*b1cdbd2cSJim Jagielski lock xadd dword ptr [ecx],eax
127*b1cdbd2cSJim Jagielski cont:
128*b1cdbd2cSJim Jagielski dec eax
129*b1cdbd2cSJim Jagielski }
130*b1cdbd2cSJim Jagielski }
131*b1cdbd2cSJim Jagielski #pragma warning(default: 4035)
132*b1cdbd2cSJim Jagielski #endif
133*b1cdbd2cSJim Jagielski #else
134*b1cdbd2cSJim Jagielski #pragma message("WARNING: Using system InterlockedDecrement")
135*b1cdbd2cSJim Jagielski {
136*b1cdbd2cSJim Jagielski return (InterlockedDecrement(pCount));
137*b1cdbd2cSJim Jagielski }
138*b1cdbd2cSJim Jagielski #endif
139