| // posix-signal.h - Catch runtime signals and turn them into exceptions. |
| |
| /* Copyright (C) 1998, 1999, 2000, 2009, 2011, 2012 Free Software Foundation |
| |
| This file is part of libgcj. |
| |
| This software is copyrighted work licensed under the terms of the |
| Libgcj License. Please consult the file "LIBGCJ_LICENSE" for |
| details. */ |
| |
| #ifndef JAVA_SIGNAL_H |
| #define JAVA_SIGNAL_H 1 |
| |
| #include <signal.h> |
| |
| #define HANDLE_SEGV 1 |
| #define HANDLE_FPE 1 |
| |
| /* Different implementations of MD_FALLBACK_FRAME_STATE_FOR either require |
| SA_SIGINFO being set or fail if so. Cf. gcc/ada/init.c |
| (__gnat_install_handler) for details. */ |
| |
| #if defined __sun__ && defined __svr4__ |
| #define SA_FLAGS SA_NODEFER | SA_SIGINFO |
| #else |
| #error Must define SA_FLAGS. |
| #endif |
| |
| #if SA_FLAGS & SA_SIGINFO |
| #define SIGNAL_HANDLER(_name) \ |
| static void _Jv_##_name (int, \ |
| siginfo_t *_si __attribute__ ((__unused__)), \ |
| void *_uc __attribute__ ((__unused__))) |
| #define sa_signal_handler sa_sigaction |
| #else |
| #define SIGNAL_HANDLER(_name) \ |
| static void _Jv_##_name (int) |
| #define sa_signal_handler sa_handler |
| #endif |
| |
| #define MAKE_THROW_FRAME(_exception) |
| |
| #define _INIT_SIG_HANDLER(_SIG, _ACTION) \ |
| do \ |
| { \ |
| struct sigaction act; \ |
| act.sa_signal_handler = _Jv_##_ACTION; \ |
| act.sa_flags = SA_FLAGS; \ |
| sigemptyset (&act.sa_mask); \ |
| sigaction(_SIG, &act, NULL); \ |
| } \ |
| while (0) |
| |
| #define INIT_SEGV _INIT_SIG_HANDLER (SIGSEGV, catch_segv) |
| #define INIT_FPE _INIT_SIG_HANDLER (SIGFPE, catch_fpe) |
| |
| #endif /* JAVA_SIGNAL_H */ |