1#include <stdint.h>
2#include <stddef.h>
3
4struct tls_obj
5{
6 const char *name;
7 uintptr_t addr;
8 size_t size;
9 size_t align;
10};
11extern struct tls_obj tls_registry[];
12
13#define TLS_REGISTER(x) \
14static void __attribute__((constructor)) \
15tls_register_##x (void) \
16{ \
17 size_t i; \
18 for (i = 0; tls_registry[i].name; ++i); \
19 tls_registry[i].name = #x; \
20 tls_registry[i].addr = (uintptr_t) &x; \
21 tls_registry[i].size = sizeof (x); \
22 tls_registry[i].align = __alignof__ (x); \
23}
24

source code of glibc/nptl/tst-tls5.h