65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
// i386-signal.h - Catch runtime signals and turn them into exceptions.
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/* Copyright (C) 1998, 1999 Cygnus Solutions
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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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/* This technique should work for all i386 based Unices which conform
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* to iBCS2. This includes all versions of Linux more recent than 1.3
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*/
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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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#define SIGNAL_HANDLER(_name) \
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static void _name (int _dummy)
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#define MAKE_THROW_FRAME \
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{ \
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void **_p = (void **)&_dummy; \
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struct sigcontext_struct *_regs = (struct sigcontext_struct *)++_p; \
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\
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register unsigned long _ebp = _regs->ebp; \
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register unsigned long _eip = _regs->eip; \
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\
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asm volatile ("mov %0, (%%ebp); mov %1, 4(%%ebp)" \
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: : "r"(_ebp), "r"(_eip)); \
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}
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#define INIT_SEGV \
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do \
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{ \
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nullp = new java::lang::NullPointerException (); \
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struct sigaction act; \
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act.sa_handler = catch_segv; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = 0; \
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sigaction (SIGSEGV, &act, NULL); \
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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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arithexception = new java::lang::ArithmeticException (); \
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struct sigaction act; \
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act.sa_handler = catch_fpe; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = 0; \
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sigaction (SIGFPE, &act, NULL); \
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} \
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while (0)
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#endif /* JAVA_SIGNAL_H */
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