Subversion Repositories openrisc_2011-10-31

/* BFD back-end for TMS320C30 coff binaries.

   Copyright 1998, 1999, 2000, 2001, 2002, 2005, 2007, 2008

   Free Software Foundation, Inc.

   Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)

   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 "bfdlink.h"

#include "coff/tic30.h"

#include "coff/internal.h"

#include "libcoff.h"

static int  coff_tic30_select_reloc PARAMS ((reloc_howto_type *));

static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));

static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));

reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)

reloc_howto_type tic30_coff_howto_table[] =

  {

    HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL,

           "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),

    HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL,

           "24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE),

    HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL,

           "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE),

    HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL,

           "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE),

    HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL,

           "PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),

    EMPTY_HOWTO (-1)

  };

#ifndef coff_bfd_reloc_type_lookup

#define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup

#define coff_bfd_reloc_name_lookup tic30_coff_reloc_name_lookup

/* For the case statement use the code values used in tc_gen_reloc to

   map to the howto table entries that match those in both the aout

   and coff implementations.  */

reloc_howto_type *

tic30_coff_reloc_type_lookup (abfd, code)

     bfd *abfd ATTRIBUTE_UNUSED;

     bfd_reloc_code_real_type code;

{

  switch (code)

    {

    case BFD_RELOC_8:

    case BFD_RELOC_TIC30_LDP:

      return &tic30_coff_howto_table[2];

    case BFD_RELOC_16:

      return &tic30_coff_howto_table[0];

    case BFD_RELOC_24:

      return &tic30_coff_howto_table[1];

    case BFD_RELOC_16_PCREL:

      return &tic30_coff_howto_table[4];

    case BFD_RELOC_32:

      return &tic30_coff_howto_table[3];

    default:

      return (reloc_howto_type *) NULL;

    }

}

static reloc_howto_type *

tic30_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,

                              const char *r_name)

{

  unsigned int i;

  for (i = 0;

       i < (sizeof (tic30_coff_howto_table)

            / sizeof (tic30_coff_howto_table[0]));

       i++)

    if (tic30_coff_howto_table[i].name != NULL

        && strcasecmp (tic30_coff_howto_table[i].name, r_name) == 0)

      return &tic30_coff_howto_table[i];

  return NULL;

}

#endif

/* Turn a howto into a reloc number.  */

static int

coff_tic30_select_reloc (howto)

     reloc_howto_type *howto;

{

  return howto->type;

}

#define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto)

#define BADMAG(x) TIC30BADMAG(x)

#define TIC30 1                 /* Customize coffcode.h */

#define __A_MAGIC_SET__

/* Code to swap in the reloc */

#define SWAP_IN_RELOC_OFFSET  H_GET_32

#define SWAP_OUT_RELOC_OFFSET H_PUT_32

#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \

dst->r_stuff[1] = 'C';

/* Code to turn a r_type into a howto ptr, uses the above howto table.  */

static void

rtype2howto (internal, dst)

     arelent *internal;

     struct internal_reloc *dst;

{

  switch (dst->r_type)

    {

    case R_TIC30_ABS16:

      internal->howto = &tic30_coff_howto_table[0];

      break;

    case R_TIC30_ABS24:

      internal->howto = &tic30_coff_howto_table[1];

      break;

    case R_TIC30_ABS32:

      internal->howto = &tic30_coff_howto_table[3];

      break;

    case R_TIC30_LDP:

      internal->howto = &tic30_coff_howto_table[2];

      break;

    case R_TIC30_PC16:

      internal->howto = &tic30_coff_howto_table[4];

      break;

    default:

      abort ();

      break;

    }

}

#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)

/* Perform any necessary magic to the addend in a reloc entry */

#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \

 cache_ptr->addend =  ext_reloc.r_offset;

#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \

 reloc_processing(relent, reloc, symbols, abfd, section)

static void

reloc_processing (relent, reloc, symbols, abfd, section)

     arelent *relent;

     struct internal_reloc *reloc;

     asymbol **symbols;

     bfd *abfd;

     asection *section;

{

  relent->address = reloc->r_vaddr;

  rtype2howto (relent, reloc);

  if (reloc->r_symndx > 0)

    relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];

  else

    relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;

  relent->addend = reloc->r_offset;

  relent->address -= section->vma;

}

#ifndef bfd_pe_print_pdata

#define bfd_pe_print_pdata      NULL

#endif

#include "coffcode.h"

const bfd_target tic30_coff_vec =

{

  "coff-tic30",                 /* name */

  bfd_target_coff_flavour,

  BFD_ENDIAN_BIG,               /* data byte order is big */

  BFD_ENDIAN_LITTLE,            /* header byte order is little */

  (HAS_RELOC | EXEC_P |         /* object flags */

   HAS_LINENO | HAS_DEBUG |

   HAS_SYMS | HAS_LOCALS | WP_TEXT),

  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */

  '_',                          /* leading symbol underscore */

  '/',                          /* ar_pad_char */

  15,                           /* ar_max_namelen */

  bfd_getb64, bfd_getb_signed_64, bfd_putb64,

  bfd_getb32, bfd_getb_signed_32, bfd_putb32,

  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* data */

  bfd_getl64, bfd_getl_signed_64, bfd_putl64,

  bfd_getl32, bfd_getl_signed_32, bfd_putl32,

  bfd_getl16, bfd_getl_signed_16, bfd_putl16,   /* hdrs */

  {_bfd_dummy_target, coff_object_p,    /* bfd_check_format */

   bfd_generic_archive_p, _bfd_dummy_target},

  {bfd_false, coff_mkobject, _bfd_generic_mkarchive,    /* bfd_set_format */

   bfd_false},

  {bfd_false, coff_write_object_contents,       /* bfd_write_contents */

   _bfd_write_archive_contents, bfd_false},

  BFD_JUMP_TABLE_GENERIC (coff),

  BFD_JUMP_TABLE_COPY (coff),

  BFD_JUMP_TABLE_CORE (_bfd_nocore),

  BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),

  BFD_JUMP_TABLE_SYMBOLS (coff),

  BFD_JUMP_TABLE_RELOCS (coff),

  BFD_JUMP_TABLE_WRITE (coff),

  BFD_JUMP_TABLE_LINK (coff),

  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

  NULL,

  COFF_SWAP_TABLE

};