/* BFD library support routines for the Renesas H8/300 architecture.

   Copyright (C) 1990-2025 Free Software Foundation, Inc.

   Hacked by Steve Chamberlain of Cygnus Support.

   This file is part of BFD, the Binary File Descriptor library.

   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, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#include "sysdep.h"

#include "bfd.h"

#include "libbfd.h"

#include "cpu-h8300.h"

static bool

h8300_scan (const struct bfd_arch_info *info, const char *string)

{

  if (*string != 'h' && *string != 'H')

    return false;

  string++;

  if (*string != '8')

    return false;

  string++;

  if (*string == '/')

    string++;

  if (*string != '3')

    return false;

  string++;

  if (*string != '0')

    return false;

  string++;

  if (*string != '0')

    return false;

  string++;

  if (*string == '-')

    string++;

  /* In ELF linker scripts, we typically express the architecture/machine

     as architecture:machine.

     So if we've matched so far and encounter a colon, try to match the

     string following the colon.  */

  if (*string == ':')

    {

      string++;

      return h8300_scan (info, string);

    }

  if (*string == 'h' || *string == 'H')

    {

      string++;

      if (*string == 'n' || *string == 'N')

  return (info->mach == bfd_mach_h8300hn);

      return (info->mach == bfd_mach_h8300h);

    }

  else if (*string == 's' || *string == 'S')

    {

      string++;

      if (*string == 'n' || *string == 'N')

  return (info->mach == bfd_mach_h8300sn);

      if (*string == 'x' || *string == 'X')

  {

    string++;

    if (*string == 'n' || *string == 'N')

      return (info->mach == bfd_mach_h8300sxn);

    return (info->mach == bfd_mach_h8300sx);

  }

      return (info->mach == bfd_mach_h8300s);

    }

  else

    return info->mach == bfd_mach_h8300;

}

/* This routine is provided two arch_infos and works out the machine

   which would be compatible with both and returns a pointer to its

   info structure.  */

static const bfd_arch_info_type *

compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out)

{

  if (in->arch != out->arch)

    return 0;

  if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s)

    return in;

  if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx)

    return out;

  if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn)

    return in;

  if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn)

    return out;

  /* It's really not a good idea to mix and match modes.  */

  if (in->mach != out->mach)

    return 0;

  else

    return in;

}

#define N(word, addr, number, name, print, default, next)   \

  { word, addr, 8, bfd_arch_h8300, number, name, print, 1, default, \

    compatible, h8300_scan, bfd_arch_default_fill, next, 0 }

static const bfd_arch_info_type h8300sxn_info_struct =

  N (32, 16, bfd_mach_h8300sxn, "h8300sxn", "h8300sxn", false, NULL);

static const bfd_arch_info_type h8300sx_info_struct =

  N (32, 32, bfd_mach_h8300sx, "h8300sx", "h8300sx", false, &h8300sxn_info_struct);

static const bfd_arch_info_type h8300sn_info_struct =

  N (32, 16, bfd_mach_h8300sn, "h8300sn", "h8300sn", false, &h8300sx_info_struct);

static const bfd_arch_info_type h8300hn_info_struct =

  N (32, 16, bfd_mach_h8300hn, "h8300hn", "h8300hn", false, &h8300sn_info_struct);

static const bfd_arch_info_type h8300s_info_struct =

  N (32, 32, bfd_mach_h8300s, "h8300s", "h8300s", false, & h8300hn_info_struct);

static const bfd_arch_info_type h8300h_info_struct =

  N (32, 32, bfd_mach_h8300h, "h8300h", "h8300h", false, &h8300s_info_struct);

const bfd_arch_info_type bfd_h8300_arch =

  N (16, 16, bfd_mach_h8300, "h8300", "h8300", true, &h8300h_info_struct);

/* Pad the given address to 32 bits, converting 16-bit and 24-bit

   addresses into the values they would have had on a h8s target.  */

bfd_vma

bfd_h8300_pad_address (bfd *abfd, bfd_vma address)

{

  /* Cope with bfd_vma's larger than 32 bits.  */

  address &= 0xffffffffu;

  switch (bfd_get_mach (abfd))

    {

    case bfd_mach_h8300:

    case bfd_mach_h8300hn:

    case bfd_mach_h8300sn:

    case bfd_mach_h8300sxn:

      /* Sign extend a 16-bit address.  */

      if (address >= 0x8000)

  return address | 0xffff0000u;

      return address;

    case bfd_mach_h8300h:

      /* Sign extend a 24-bit address.  */

      if (address >= 0x800000)

  return address | 0xff000000u;

      return address;

    case bfd_mach_h8300s:

    case bfd_mach_h8300sx:

      return address;

    default:

      abort ();

    }

}