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/* Common target dependent code for GDB on Alpha systems running BSD.

   Copyright 2000, 2001, 2002 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 2 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, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "defs.h"

#include "regcache.h"

#include "alpha-tdep.h"

#include "alphabsd-tdep.h"

/* Number of general-purpose registers.  */

#define NUM_GREGS 32

/* Number of floating-point registers.  */

#define NUM_FPREGS 31

/* Conviently, GDB uses the same register numbering as the

   ptrace register structure used by BSD on Alpha.  */

void

alphabsd_supply_reg (char *regs, int regno)

{

  int i;

  for (i = 0; i < NUM_GREGS; i++)

    {

      if (i == regno || regno == -1)

        {

          if (CANNOT_FETCH_REGISTER (i))

            supply_register (i, NULL);

          else

            supply_register (i, regs + (i * 8));

        }

    }

  /* The PC travels in the ZERO slot.  */

  if (regno == PC_REGNUM || regno == -1)

    supply_register (PC_REGNUM, regs + (31 * 8));

}

void

alphabsd_fill_reg (char *regs, int regno)

{

  int i;

  for (i = 0; i < NUM_GREGS; i++)

    if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))

      regcache_collect (i, regs + (i * 8));

  /* The PC travels in the ZERO slot.  */

  if (regno == PC_REGNUM || regno == -1)

    regcache_collect (PC_REGNUM, regs + (31 * 8));

}

void

alphabsd_supply_fpreg (char *fpregs, int regno)

{

  int i;

  for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++)

    {

      if (i == regno || regno == -1)

        {

          if (CANNOT_FETCH_REGISTER (i))

            supply_register (i, NULL);

          else

            supply_register (i, fpregs + ((i - FP0_REGNUM) * 8));

        }

    }

  if (regno == ALPHA_FPCR_REGNUM || regno == -1)

    supply_register (ALPHA_FPCR_REGNUM, fpregs + (32 * 8));

}

void

alphabsd_fill_fpreg (char *fpregs, int regno)

{

  int i;

  for (i = FP0_REGNUM; i < FP0_REGNUM + NUM_FPREGS; i++)

    if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))

      regcache_collect (i, fpregs + ((i - FP0_REGNUM) * 8));

  if (regno == ALPHA_FPCR_REGNUM || regno == -1)

    regcache_collect (ALPHA_FPCR_REGNUM, fpregs + (32 * 8));

}