libjava/include/pa-signal.h

   1 // pa-signal.h - Catch runtime signals and turn them into exceptions.
   2
   3 /* Copyright (C) 1998, 1999, 2000, 2009  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 #ifndef JAVA_SIGNAL_H
  12 #define JAVA_SIGNAL_H 1
  13
  14 #include <signal.h>
  15 #include <sys/syscall.h>
  16
  17 #define HANDLE_SEGV 1
  18 #define HANDLE_FPE 1
  19
  20 #define SIGNAL_HANDLER(_name)                                           \
  21 static void _Jv_##_name (int _dummy __attribute__ ((unused)),           \
  22                          siginfo_t *_info __attribute__ ((__unused__)), \
  23                          void *arg __attribute__ ((__unused__)))
  24
  25 #define MAKE_THROW_FRAME(_exception)
  26
  27 #define INIT_SEGV                                               \
  28 do                                                              \
  29   {                                                             \
  30     struct sigaction act;                                       \
  31     act.sa_sigaction = _Jv_catch_segv;                          \
  32     sigemptyset (&act.sa_mask);                                 \
  33     act.sa_flags = SA_SIGINFO;                                  \
  34     syscall (SYS_rt_sigaction, SIGSEGV, &act, NULL, _NSIG / 8); \
  35   }                                                             \
  36 while (0)
  37
  38 #define INIT_FPE                                                \
  39 do                                                              \
  40   {                                                             \
  41     struct sigaction act;                                       \
  42     act.sa_sigaction = _Jv_catch_fpe;                           \
  43     sigemptyset (&act.sa_mask);                                 \
  44     act.sa_flags = SA_SIGINFO;                                  \
  45     syscall (SYS_rt_sigaction, SIGFPE, &act, NULL, _NSIG / 8);  \
  46   }                                                             \
  47 while (0)
  48
  49 #endif /* JAVA_SIGNAL_H */