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Commit | Line | Data |
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cafdfdb6 RM |
1 | /* Test case for early TLS initialization in dynamic linker. */ |
2 | ||
3 | #include <stdio.h> | |
4 | #include <stdlib.h> | |
5 | #include <string.h> | |
58007e9e | 6 | #include <dlfcn.h> |
cafdfdb6 | 7 | |
3ce1f295 UD |
8 | #define MAGIC1 0xabcdef72 |
9 | #define MAGIC2 0xd8675309 | |
cafdfdb6 | 10 | static __thread unsigned int magic[] = { MAGIC1, MAGIC2 }; |
58007e9e | 11 | static __thread int calloc_called; |
cafdfdb6 RM |
12 | |
13 | #undef calloc | |
14 | ||
15 | /* This calloc definition will be called by the dynamic linker itself. | |
58007e9e L |
16 | We test that interposed calloc is called by the dynamic loader, and |
17 | that TLS is fully initialized by then. */ | |
cafdfdb6 RM |
18 | |
19 | void * | |
20 | calloc (size_t n, size_t m) | |
21 | { | |
58007e9e | 22 | if (!calloc_called) |
cafdfdb6 | 23 | { |
58007e9e L |
24 | /* Allow our calloc to be called more than once. */ |
25 | calloc_called = 1; | |
26 | if (magic[0] != MAGIC1 || magic[1] != MAGIC2) | |
27 | { | |
28 | printf ("{%x, %x} != {%x, %x}\n", | |
29 | magic[0], magic[1], MAGIC1, MAGIC2); | |
30 | abort (); | |
31 | } | |
32 | magic[0] = MAGIC2; | |
33 | magic[1] = MAGIC1; | |
cafdfdb6 | 34 | } |
cafdfdb6 RM |
35 | |
36 | n *= m; | |
37 | void *ptr = malloc (n); | |
38 | if (ptr != NULL) | |
39 | memset (ptr, '\0', n); | |
40 | return ptr; | |
41 | } | |
42 | ||
29955b5d AS |
43 | static int |
44 | do_test (void) | |
cafdfdb6 | 45 | { |
58007e9e L |
46 | /* Make sure that our calloc is called from the dynamic linker at least |
47 | once. */ | |
48 | void *h = dlopen("$ORIGIN/tst-auditmod9b.so", RTLD_LAZY); | |
49 | if (h != NULL) | |
50 | dlclose (h); | |
cafdfdb6 RM |
51 | if (magic[1] != MAGIC1 || magic[0] != MAGIC2) |
52 | { | |
53 | printf ("{%x, %x} != {%x, %x}\n", magic[0], magic[1], MAGIC2, MAGIC1); | |
54 | return 1; | |
55 | } | |
cafdfdb6 RM |
56 | |
57 | return 0; | |
58 | } | |
29955b5d | 59 | |
36fe25fd | 60 | #include <support/test-driver.c> |