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