1 // posix-signal.h - Catch runtime signals and turn them into exceptions.
3 /* Copyright (C) 1998, 1999, 2000, 2009, 2011 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
12 #define JAVA_SIGNAL_H 1
19 /* Different implementations of MD_FALLBACK_FRAME_STATE_FOR either require
20 SA_SIGINFO being set or fail if so. Cf. gcc/ada/init.c
21 (__gnat_install_handler) for details. */
23 #if (defined __alpha__ && defined __osf__) \
24 || (defined __sun__ && defined __svr4__)
25 #define SA_FLAGS SA_NODEFER | SA_SIGINFO
27 #define SA_FLAGS SA_NODEFER
29 #error Must define SA_FLAGS.
32 #if SA_FLAGS & SA_SIGINFO
33 #define SIGNAL_HANDLER(_name) \
34 static void _Jv_##_name (int, \
35 siginfo_t *_si __attribute__ ((__unused__)), \
36 void *_uc __attribute__ ((__unused__)))
37 #define sa_signal_handler sa_sigaction
39 #define SIGNAL_HANDLER(_name) \
40 static void _Jv_##_name (int)
41 #define sa_signal_handler sa_handler
44 #define MAKE_THROW_FRAME(_exception)
46 #define _INIT_SIG_HANDLER(_SIG, _ACTION) \
49 struct sigaction act; \
50 act.sa_signal_handler = _Jv_##_ACTION; \
51 act.sa_flags = SA_FLAGS; \
52 sigemptyset (&act.sa_mask); \
53 sigaction(_SIG, &act, NULL); \
57 #define INIT_SEGV _INIT_SIG_HANDLER (SIGSEGV, catch_segv)
58 #define INIT_FPE _INIT_SIG_HANDLER (SIGFPE, catch_fpe)
60 #endif /* JAVA_SIGNAL_H */