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// s390-signal.h - Catch runtime signals and turn them into exceptions
// on an s390 based Linux system.
/* Copyright (C) 2002 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. */
#ifndef JAVA_SIGNAL_H
#define JAVA_SIGNAL_H 1
#include <signal.h>
#include <sys/syscall.h>
#define HANDLE_SEGV 1
#undef HANDLE_FPE
#define SIGNAL_HANDLER(_name) \
static void _name (int, siginfo_t *, void *)
/* We no longer need to fiddle with the PSW address in the signal handler;
this is now all handled correctly in MD_FALLBACK_FRAME_STATE_FOR. */
#define MAKE_THROW_FRAME(_exception)
/* For an explanation why we cannot simply use sigaction to
install the handlers, see i386-signal.h. */
/* We use old_kernel_sigaction here because we're calling the kernel
directly rather than via glibc. The sigaction structure that the
syscall uses is a different shape from the one in userland and not
visible to us in a header file so we define it here. */
struct old_s390_kernel_sigaction {
void (*k_sa_handler) (int, siginfo_t *, void *);
unsigned long k_sa_mask;
unsigned long k_sa_flags;
void (*sa_restorer) (void);
};
#define INIT_SEGV \
do \
{ \
struct old_s390_kernel_sigaction kact; \
kact.k_sa_handler = catch_segv; \
kact.k_sa_mask = 0; \
kact.k_sa_flags = SA_SIGINFO; \
syscall (SYS_sigaction, SIGSEGV, &kact, NULL); \
} \
while (0)
#define INIT_FPE \
do \
{ \
struct old_s390_kernel_sigaction kact; \
kact.k_sa_handler = catch_fpe; \
kact.k_sa_mask = 0; \
kact.k_sa_flags = SA_SIGINFO; \
syscall (SYS_sigaction, SIGFPE, &kact, NULL); \
} \
while (0)
#endif /* JAVA_SIGNAL_H */
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