1 | /* Initializer module for building the ELF shared C library. This file and |
2 | sofini.c do the work normally done by crtbeginS.o and crtendS.o, to wrap |
3 | the `.ctors' and `.dtors' sections so the lists are terminated, and |
4 | calling those lists of functions. */ |
5 | |
6 | #ifndef NO_CTORS_DTORS_SECTIONS |
7 | # include <stdlib.h> |
8 | |
9 | static void (*const __CTOR_LIST__[1]) (void) |
10 | __attribute__ ((used, section (".ctors" ))) |
11 | = { (void (*) (void)) -1 }; |
12 | static void (*const __DTOR_LIST__[1]) (void) |
13 | __attribute__ ((used, section (".dtors" ))) |
14 | = { (void (*) (void)) -1 }; |
15 | |
16 | static inline void |
17 | run_hooks (void (*const list[]) (void)) |
18 | { |
19 | while (*++list) |
20 | (**list) (); |
21 | } |
22 | |
23 | /* This function will be called from _init in init-first.c. */ |
24 | void |
25 | __libc_global_ctors (void) |
26 | { |
27 | /* Call constructor functions. */ |
28 | run_hooks (__CTOR_LIST__); |
29 | } |
30 | |
31 | |
32 | /* This function becomes the DT_FINI termination function |
33 | for the C library. */ |
34 | void |
35 | __libc_fini (void) |
36 | { |
37 | /* Call destructor functions. */ |
38 | run_hooks (__DTOR_LIST__); |
39 | } |
40 | |
41 | void (*_fini_ptr) (void) __attribute__ ((section (".fini_array" ))) |
42 | = &__libc_fini; |
43 | #endif |
44 | |