1/* Copyright (C) 1991-2020 Free Software Foundation, Inc. 2 3Derived from exit.h in GNU C Library. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see 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 35enum 36{ 37 ef_free, /* `ef_free' MUST be zero! */ 38 ef_us, 39 ef_on, 40 ef_at, 41 ef_cxa 42}; 43 44struct 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 }; 65struct exit_function_list 66 { 67 struct exit_function_list *next; 68 size_t idx; 69 struct exit_function fns[32]; 70 }; 71extern struct exit_function_list *__exit_funcs attribute_hidden; 72extern struct exit_function_list *__quick_exit_funcs attribute_hidden; 73 74extern struct exit_function *__new_exitfn (struct exit_function_list **listp); 75extern uint64_t __new_exitfn_called attribute_hidden; 76 77extern void __run_exit_handlers (int status, struct exit_function_list **listp, 78 bool run_list_atexit) 79 attribute_hidden __attribute__ ((__noreturn__)); 80 81extern int __internal_atexit (void (*func) (void *), void *arg, void *d, 82 struct exit_function_list **listp) 83 attribute_hidden; 84extern int __cxa_at_quick_exit (void (*func) (void *), void *d); 85 86extern int __cxa_atexit (void (*func) (void *), void *arg, void *d); 87extern int __cxa_atexit_internal (void (*func) (void *), void *arg, void *d) 88 attribute_hidden; 89 90extern void __cxa_finalize (void *d); 91 92#endif /* exit.h */ 93