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/* hppa-signal.h - Catch runtime signals and turn them into exceptions,
on a HP-UX 11 PA system. */
/* Copyright (C) 2006 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. */
/* This file is really more of a specification. The rest of the system
should be arranged so that this Just Works. */
#ifndef JAVA_SIGNAL_H
# define JAVA_SIGNAL_H 1
#include <sys/types.h>
#include <signal.h>
#include <sys/syscall.h>
#include <unistd.h>
# define HANDLE_SEGV 1
# undef HANDLE_FPE
#define SIGNAL_HANDLER(_name) \
static void _name (int _dummy __attribute__ ((unused)), \
siginfo_t *_info __attribute__ ((__unused__)), \
void *arg __attribute__ ((__unused__)))
#define MAKE_THROW_FRAME(_exception) \
do \
{ \
ucontext_t *_context = (ucontext_t *) arg; \
(void)_dummy; \
(void)_info; \
mcontext_t *mc = &(_context->uc_mcontext); \
SetSSReg (mc, ss_pcoq_head, GetSSReg (mc, ss_pcoq_tail)); \
SetSSReg (mc, ss_pcsq_head, GetSSReg (mc, ss_pcsq_tail)); \
/* This part is not quit right if the head pc was pointing \
at a branch. The tail needs to be adjusted to the branch \
target if the branch is taken. The tail space register \
may need adjustment as well if the branch is an interspace \
branch. */ \
SetSSReg (mc, ss_pcoq_tail, (GetSSReg (mc, ss_pcoq_tail) + 4)); \
\
} \
while (0)
# define INIT_SEGV \
do { \
struct sigaction sa; \
sa.sa_sigaction = catch_segv; \
sigemptyset (&sa.sa_mask); \
sa.sa_flags = SA_SIGINFO | SA_NODEFER; \
sigaction (SIGSEGV, &sa, NULL); \
} while (0)
# define INIT_FPE \
do { \
struct sigaction sa; \
sa.sa_sigaction = catch_fpe; \
sigemptyset (&sa.sa_mask); \
sa.sa_flags = SA_SIGINFO | SA_NODEFER; \
sigaction (SIGFPE, &sa, NULL); \
} while (0)
#endif /* JAVA_SIGNAL_H */
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