2009-07-07 Tristan Gingold <gingold@adacore.com>

[deliverable/binutils-gdb.git] / gdb / i386-linux-tdep.h

/* Target-dependent code for GNU/Linux x86.

   Copyright (C) 2002, 2003, 2007, 2008, 2009 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef I386_LINUX_TDEP_H
#define I386_LINUX_TDEP_H

/* The Linux kernel pretends there is an additional "orig_eax"
   register.  Since GDB needs access to that register to be able to
   properly restart system calls when necessary (see
   i386-linux-tdep.c) we need our own versions of a number of
   functions that deal with GDB's register cache.  */

/* Register number for the "orig_eax" pseudo-register.  If this
   pseudo-register contains a value >= 0 it is interpreted as the
   system call number that the kernel is supposed to restart.  */
#define I386_LINUX_ORIG_EAX_REGNUM I386_SSE_NUM_REGS

/* Total number of registers for GNU/Linux.  */
#define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1)

#endif /* i386-linux-tdep.h */