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1 | // tls_test.cc -- test TLS variables for gold |
2 | ||
ebdbb458 | 3 | // Copyright 2006, 2007, 2008 Free Software Foundation, Inc. |
6eee141f ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | // This provides a set of test functions for TLS variables. The | |
24 | // functions are called by a main function in tls_test_main.cc. This | |
25 | // lets us test TLS access from a shared library. We currently don't | |
26 | // bother to test TLS access between two different files, on the | |
27 | // theory that that is no more complicated than ordinary variable | |
28 | // access between files. | |
29 | ||
30 | // We start two threads, and stop the second one. Then we run the | |
31 | // first thread through the following cases. Then we let the second | |
32 | // thread continue, and run it through the same set of cases. All the | |
33 | // actual thread manipulation is in tls_test_main.cc. | |
34 | ||
35 | // 1 Access to an uninitialized global thread variable. | |
36 | // 2 Access to an uninitialized static thread variable. | |
37 | // 3 Access to an initialized global thread variable. | |
38 | // 4 Access to an initialized static thread variable. | |
39 | // 5 Taking the address of a global thread variable. | |
40 | // 6 Taking the address of a static thread variable. | |
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41 | // 8 Like test 1, but with the thread variable defined in another file. |
42 | // 9 Like test 3, but with the thread variable defined in another file. | |
43 | // 10 Like test 5, but with the thread variable defined in another file. | |
44 | // last Verify that the above tests left the variables set correctly. | |
45 | ||
6eee141f | 46 | |
8261e3bf | 47 | #include <cstdio> |
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48 | #include "tls_test.h" |
49 | ||
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50 | #define CHECK_EQ_OR_RETURN(var, expected) \ |
51 | do \ | |
52 | { \ | |
53 | if ((var) != (expected)) \ | |
54 | { \ | |
55 | printf(#var ": expected %d, found %d\n", expected, var); \ | |
56 | return false; \ | |
57 | } \ | |
58 | } \ | |
59 | while (0) | |
60 | ||
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61 | __thread int v1; |
62 | static __thread int v2; | |
63 | __thread int v3 = 3; | |
64 | static __thread int v4 = 4; | |
65 | __thread int v5; | |
66 | static __thread int v6; | |
67 | ||
68 | bool | |
69 | t1() | |
70 | { | |
8261e3bf | 71 | CHECK_EQ_OR_RETURN(v1, 0); |
6eee141f ILT |
72 | v1 = 10; |
73 | return true; | |
74 | } | |
75 | ||
76 | bool | |
77 | t2() | |
78 | { | |
8261e3bf | 79 | CHECK_EQ_OR_RETURN(v2, 0); |
6eee141f ILT |
80 | v2 = 20; |
81 | return true; | |
82 | } | |
83 | ||
84 | bool | |
85 | t3() | |
86 | { | |
8261e3bf | 87 | CHECK_EQ_OR_RETURN(v3, 3); |
6eee141f ILT |
88 | v3 = 30; |
89 | return true; | |
90 | } | |
91 | ||
92 | bool | |
93 | t4() | |
94 | { | |
8261e3bf | 95 | CHECK_EQ_OR_RETURN(v4, 4); |
6eee141f ILT |
96 | v4 = 40; |
97 | return true; | |
98 | } | |
99 | ||
100 | // For test 5 the main function calls f5b(f5a()), then calls t5(). | |
101 | ||
102 | int* | |
103 | f5a() | |
104 | { | |
105 | return &v5; | |
106 | } | |
107 | ||
108 | void | |
109 | f5b(int* p) | |
110 | { | |
111 | *p = 50; | |
112 | } | |
113 | ||
114 | bool | |
115 | t5() | |
116 | { | |
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117 | CHECK_EQ_OR_RETURN(v5, 50); |
118 | return true; | |
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119 | } |
120 | ||
e0374858 | 121 | // For test 6 the main function calls f6b(f6a()), then calls t6(). |
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122 | |
123 | int* | |
124 | f6a() | |
125 | { | |
126 | return &v6; | |
127 | } | |
128 | ||
129 | void | |
130 | f6b(int* p) | |
131 | { | |
132 | *p = 60; | |
133 | } | |
134 | ||
135 | bool | |
136 | t6() | |
137 | { | |
8261e3bf ILT |
138 | CHECK_EQ_OR_RETURN(v6, 60); |
139 | return true; | |
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140 | } |
141 | ||
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142 | // The slot for t7() is unused. |
143 | ||
144 | bool | |
145 | t8() | |
146 | { | |
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147 | CHECK_EQ_OR_RETURN(o1, 0); |
148 | o1 = -10; | |
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149 | return true; |
150 | } | |
151 | ||
152 | bool | |
153 | t9() | |
154 | { | |
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155 | CHECK_EQ_OR_RETURN(o2, -2); |
156 | o2 = -20; | |
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157 | return true; |
158 | } | |
159 | ||
160 | // For test 10 the main function calls f10b(f10a()), then calls t10(). | |
161 | ||
162 | int* | |
163 | f10a() | |
164 | { | |
165 | return &o3; | |
166 | } | |
167 | ||
168 | void | |
169 | f10b(int* p) | |
170 | { | |
8261e3bf | 171 | *p = -30; |
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172 | } |
173 | ||
174 | bool | |
175 | t10() | |
176 | { | |
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177 | CHECK_EQ_OR_RETURN(o3, -30); |
178 | return true; | |
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179 | } |
180 | ||
6eee141f | 181 | bool |
e0374858 | 182 | t_last() |
6eee141f | 183 | { |
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184 | CHECK_EQ_OR_RETURN(v1, 10); |
185 | CHECK_EQ_OR_RETURN(v2, 20); | |
186 | CHECK_EQ_OR_RETURN(v3, 30); | |
187 | CHECK_EQ_OR_RETURN(v4, 40); | |
188 | CHECK_EQ_OR_RETURN(v5, 50); | |
189 | CHECK_EQ_OR_RETURN(v6, 60); | |
190 | CHECK_EQ_OR_RETURN(o1, -10); | |
191 | CHECK_EQ_OR_RETURN(o2, -20); | |
192 | CHECK_EQ_OR_RETURN(o3, -30); | |
193 | return true; | |
6eee141f | 194 | } |