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