62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
// pa-signal.h - Catch runtime signals and turn them into exceptions.
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/* Copyright (C) 1998, 1999, 2000 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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#include <ucontext.h>
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#include <sys/syscall.h>
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#define HANDLE_SEGV 1
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#define HANDLE_FPE 1
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#define SIGNAL_HANDLER(_name) \
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static void _Jv_##_name (int _dummy, siginfo_t *_info, void *arg)
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#define MAKE_THROW_FRAME(_exception) \
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do \
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{ \
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struct ucontext *uc = (struct ucontext *)arg; \
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struct sigcontext *sc = &uc->uc_mcontext; \
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(void)_dummy; \
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(void)_info; \
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/* Advance the program counter so that it is after the start \
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of the instruction: the exception handler expects \
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the PC to point to the instruction after a call. */ \
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sc->sc_iaoq[0] = sc->sc_iaoq[1]; \
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sc->sc_iaoq[1] += 4; \
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} \
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while (0)
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#define INIT_SEGV \
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do \
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{ \
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struct sigaction act; \
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act.sa_sigaction = _Jv_catch_segv; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = SA_SIGINFO; \
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syscall (SYS_rt_sigaction, SIGSEGV, &act, NULL, _NSIG / 8); \
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} \
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while (0)
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#define INIT_FPE \
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do \
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{ \
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struct sigaction act; \
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act.sa_sigaction = _Jv_catch_fpe; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = SA_SIGINFO; \
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syscall (SYS_rt_sigaction, SIGFPE, &act, NULL, _NSIG / 8); \
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} \
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while (0)
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#endif /* JAVA_SIGNAL_H */
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