1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef DEF
DEF(This)
DEF(is)
DEF(a)
DEF(test)
DEF(of)
DEF(string)
DEF(array)
DEF(for)
DEF(use)
DEF(with)
DEF(elfhack)
DEF(to)
DEF(see)
DEF(whether)
DEF(it)
DEF(breaks)
DEF(anything)
DEF(but)
DEF(one)
DEF(needs)
DEF(quite)
DEF(some)
DEF(strings)
DEF(before)
DEF(the)
DEF(program)
DEF(can)
DEF(do)
DEF(its)
DEF(work)
DEF(efficiently)
DEF(Without)
DEF(enough)
DEF(data)
DEF(relocation)
DEF(sections)
DEF(are)
// clang-format off
DEF(not)
// clang-format on
DEF(sufficiently)
DEF(large)
DEF(and)
DEF(injected)
DEF(code)
DEF(wouldnt)
DEF(fit)
DEF(Said)
DEF(otherwise)
DEF(we)
DEF(need)
DEF(more)
DEF(words)
DEF(than)
DEF(up)
DEF(here)
DEF(so)
DEF(that)
DEF(relocations)
DEF(take)
DEF(significant)
DEF(bytes)
DEF(amounts)
DEF(which)
DEF(isnt)
DEF(exactly)
DEF(easily)
DEF(achieved)
DEF(like)
DEF(this)
DEF(Actually)
DEF(I)
DEF(must)
DEF(cheat)
DEF(by)
DEF(including)
DEF(these)
DEF(phrases)
DEF(several)
DEF(times)
#else
# pragma GCC visibility push(default)
# include <stdlib.h>
# include <stdio.h>
# define DEF(w) static const char str_##w[] = #w;
# include "test.c"
# undef DEF
const char* strings[] = {
# define DEF(w) str_##w,
# include "test.c"
# include "test.c"
# include "test.c"
};
/* Create a hole between two zones of relative relocations */
int small_hole[] = {42, 42, 42, 42};
const char* strings2[] = {
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
};
/* Create a bigger hole between two zones of relative relocations */
int bigger_hole[] = {
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
};
const char* strings3[] = {
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# undef DEF
};
static int ret = 1;
int print_status() {
fprintf(stderr, "%s\n", ret ? "FAIL" : "PASS");
return ret;
}
/* On ARM, this creates a .tbss section before .init_array, which
* elfhack could then pick instead of .init_array.
* Also, when .tbss is big enough, elfhack may wrongfully consider
* following sections as part of the PT_TLS segment.
* Finally, gold makes TLS segments end on an aligned virtual address,
* even when the underlying section ends before that, and elfhack
* sanity checks may yield an error. */
__thread int foo;
__thread long long int bar[512];
/* We need a .bss that can hold at least 2 pointers. The static in
* end_test() plus this variable should do. */
size_t dummy;
void end_test() {
static size_t count = 0;
/* Only exit when both constructors have been called */
if (++count == 2) {
ret = 0;
// Avoid the dummy variable being stripped out at link time because
// it's unused.
dummy = 1;
}
}
void test() {
int i = 0, j = 0, k = 0;
# define DEF_(a, i, w) \
if (a[i++] != str_##w) return;
# define DEF(w) DEF_(strings, i, w)
# include "test.c"
# include "test.c"
# include "test.c"
# undef DEF
# define DEF(w) DEF_(strings2, j, w)
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# undef DEF
# define DEF(w) DEF_(strings3, k, w)
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# include "test.c"
# undef DEF
if (i != sizeof(strings) / sizeof(strings[0]) &&
j != sizeof(strings2) / sizeof(strings2[0]) &&
k != sizeof(strings3) / sizeof(strings3[0]))
fprintf(stderr, "WARNING: Test doesn't cover the whole array\n");
end_test();
}
# pragma GCC visibility pop
#endif
|
