libjava/include/i386-signal.h

   1 // i386-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 /* This technique should work for all i386 based Unices which conform
  12    to iBCS2.  This includes all versions of Linux more recent than
  13    version 1.3 */
  14
  15
  16 #ifndef JAVA_SIGNAL_H
  17 #define JAVA_SIGNAL_H 1
  18
  19 #include <signal.h>
  20
  21 #define HANDLE_SEGV 1
  22 #define HANDLE_FPE 1
  23
  24
  25 #define MAKE_THROW_FRAME(_dummy)                                        \
  26 {                                                                       \
  27   void **_p = (void **)&_dummy;                                         \
  28   struct sigcontext_struct *_regs = (struct sigcontext_struct *)++_p;   \
  29                                                                         \
  30   register unsigned long _ebp = _regs->ebp;                             \
  31   register unsigned long _eip = _regs->eip;                             \
  32                                                                         \
  33   asm volatile ("mov %0, (%%ebp); mov %1, 4(%%ebp)"                     \
  34                 : : "r"(_ebp), "r"(_eip));                              \
  35 }
  36
  37 #endif /* JAVA_SIGNAL_H */
  38