1 /* Copyright (C) 1991-2019 Free Software Foundation, Inc. 2 3 Derived from exit.h in GNU C Library. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #ifndef _EXIT_H 27 #define _EXIT_H 1 28 29 #define attribute_hidden 30 #define INTDEF(name) 31 32 #include <stdbool.h> 33 #include <stdint.h> 34 35 enum 36 { 37 ef_free, /* `ef_free' MUST be zero! */ 38 ef_us, 39 ef_on, 40 ef_at, 41 ef_cxa 42 }; 43 44 struct exit_function 45 { 46 /* `flavour' should be of type of the `enum' above but since we need 47 this element in an atomic operation we have to use `long int'. */ 48 long int flavor; 49 union 50 { 51 void (*at) (void); 52 struct 53 { 54 void (*fn) (int status, void *arg); 55 void *arg; 56 } on; 57 struct 58 { 59 void (*fn) (void *arg, int status); 60 void *arg; 61 void *dso_handle; 62 } cxa; 63 } func; 64 }; 65 struct exit_function_list 66 { 67 struct exit_function_list *next; 68 size_t idx; 69 struct exit_function fns[32]; 70 }; 71 extern struct exit_function_list *__exit_funcs attribute_hidden; 72 extern struct exit_function_list *__quick_exit_funcs attribute_hidden; 73 74 extern struct exit_function *__new_exitfn (struct exit_function_list **listp); 75 extern uint64_t __new_exitfn_called attribute_hidden; 76 77 extern void __run_exit_handlers (int status, struct exit_function_list **listp, 78 bool run_list_atexit) 79 attribute_hidden __attribute__ ((__noreturn__)); 80 81 extern int __internal_atexit (void (*func) (void *), void *arg, void *d, 82 struct exit_function_list **listp) 83 attribute_hidden; 84 extern int __cxa_at_quick_exit (void (*func) (void *), void *d); 85 86 extern int __cxa_atexit (void (*func) (void *), void *arg, void *d); 87 extern int __cxa_atexit_internal (void (*func) (void *), void *arg, void *d) 88 attribute_hidden; 89 90 extern void __cxa_finalize (void *d); 91 92 #endif /* exit.h */ 93