src/arch/avr32_jem.h

   1 /*
   2  * Copyright (C) 2003, 2004, 2005, 2006, 2007
   3  * Robert Lougher <rob@lougher.org.uk>.
   4  *
   5  * This file is part of JamVM.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2,
  10  * or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #ifndef AVR32_JEM_H_
  23 #define AVR32_JEM_H_
  24 #ifdef JEM
  25
  26 #define JEM_TRAP_ENTRIES 25 //our own trap table entries,the first entry is a jump to the proper offset
  27 //extern static const void* jem_trap_handlers_0_ENTRY[JEM_TRAP_ENTRIES];
  28
  29 extern char *trap_h;
  30
  31 #define __NR_java_settrap 282
  32 /**
  33  * Setup the real traps,the entries are actually loaded when entering
  34  * the interpreter engine
  35  */
  36 #define PREPARE_JEM_TRAPS \
  37 { \
  38     char *trap_b; \
  39     trap_b = mmap(0, 8192, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_SHARED | MAP_ANONYMOUS, 0, 0); \
  40     if (!trap_b) \
  41         exitVM(1); \
  42     trap_h = (void *)(((unsigned long)trap_b + 4095) & ~4095); \
  43     syscall(__NR_java_settrap, trap_h);\
  44 }
  45
  46
  47 /**
  48   * Called when exit jam vm
  49   * TODO:
  50   */
  51 #define DESTORY_JEM_TRAPS
  52
  53
  54 #endif /*JEM*/
  55 #endif /*AVR32_JEM_H_*/