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/* Native-dependent code for AMD64 BSD's.

   Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010

   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/>.  */

#include "defs.h"

#include "inferior.h"

#include "regcache.h"

#include "target.h"

/* We include <signal.h> to make sure `struct fxsave64' is defined on

   NetBSD, since NetBSD's <machine/reg.h> needs it.  */

#include "gdb_assert.h"

#include <signal.h>

#include <sys/types.h>

#include <sys/ptrace.h>

#include <machine/reg.h>

#include "amd64-tdep.h"

#include "amd64-nat.h"

#include "inf-ptrace.h"

/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this

   for all registers (including the floating-point registers).  */

static void

amd64bsd_fetch_inferior_registers (struct target_ops *ops,

                                   struct regcache *regcache, int regnum)

{

  struct gdbarch *gdbarch = get_regcache_arch (regcache);

  if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))

    {

      struct reg regs;

      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)

        perror_with_name (_("Couldn't get registers"));

      amd64_supply_native_gregset (regcache, &regs, -1);

      if (regnum != -1)

        return;

    }

  if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))

    {

      struct fpreg fpregs;

      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

        perror_with_name (_("Couldn't get floating point status"));

      amd64_supply_fxsave (regcache, -1, &fpregs);

    }

}

/* Store register REGNUM back into the inferior.  If REGNUM is -1, do

   this for all registers (including the floating-point registers).  */

static void

amd64bsd_store_inferior_registers (struct target_ops *ops,

                                   struct regcache *regcache, int regnum)

{

  struct gdbarch *gdbarch = get_regcache_arch (regcache);

  if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))

    {

      struct reg regs;

      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)

        perror_with_name (_("Couldn't get registers"));

      amd64_collect_native_gregset (regcache, &regs, regnum);

      if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)

        perror_with_name (_("Couldn't write registers"));

      if (regnum != -1)

        return;

    }

  if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))

    {

      struct fpreg fpregs;

      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

        perror_with_name (_("Couldn't get floating point status"));

      amd64_collect_fxsave (regcache, regnum, &fpregs);

      if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),

                  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

        perror_with_name (_("Couldn't write floating point status"));

    }

}

/* Create a prototype *BSD/amd64 target.  The client can override it

   with local methods.  */

struct target_ops *

amd64bsd_target (void)

{

  struct target_ops *t;

  t = inf_ptrace_target ();

  t->to_fetch_registers = amd64bsd_fetch_inferior_registers;

  t->to_store_registers = amd64bsd_store_inferior_registers;

  return t;

}