libjava/include/sparc-signal.h

   1 // sparc-signal.h - Catch runtime signals and turn them into exceptions.
   2
   3 /* Copyright (C) 1998, 1999  Cygnus Solutions
   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 <ucontext.h>
  16
  17 #define HANDLE_SEGV 1
  18 #define HANDLE_FPE 1
  19
  20 #define SIGNAL_HANDLER(_name)                                           \
  21 static void _name (int _dummy, siginfo_t *_info, ucontext_t *_context)
  22
  23 #define FLUSH_REGISTER_WINDOWS                                  \
  24   asm volatile ("ta 3");
  25
  26 #define MAKE_THROW_FRAME                                        \
  27 do                                                              \
  28 {                                                               \
  29   (void)_dummy;                                                 \
  30   (void)_info;                                                  \
  31   register int sp = _context->uc_mcontext.gregs[REG_SP];        \
  32   register int retaddr = _context->uc_mcontext.gregs[REG_O7];   \
  33   FLUSH_REGISTER_WINDOWS;                                       \
  34   asm volatile ("mov %0, %%i6; mov %1, %%i7"                    \
  35                 : : "r"(sp), "r"(retaddr));                     \
  36 }                                                               \
  37 while (0)
  38
  39 #define INIT_SEGV                                               \
  40 do                                                              \
  41   {                                                             \
  42     nullp = new java::lang::NullPointerException ();            \
  43     struct sigaction act;                                       \
  44     act.sa_sigaction = catch_segv;                              \
  45     act.sa_flags = SA_SIGINFO;                                  \
  46     sigemptyset (&act.sa_mask);                                 \
  47     sigaction (SIGSEGV, &act, NULL);                            \
  48   }                                                             \
  49 while (0)
  50
  51 #define INIT_FPE                                                \
  52 do                                                              \
  53   {                                                             \
  54     arithexception = new java::lang::ArithmeticException        \
  55       (JvNewStringLatin1 ("/ by zero"));                        \
  56     struct sigaction act;                                       \
  57     act.sa_flags = SA_SIGINFO;                                  \
  58     act.sa_sigaction = catch_fpe;                               \
  59     sigemptyset (&act.sa_mask);                                 \
  60     sigaction (SIGFPE, &act, NULL);                             \
  61   }                                                             \
  62 while (0)
  63
  64 #endif /* JAVA_SIGNAL_H */