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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [bfd/] [coff-tic30.c] - Blame information for rev 842

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1 227 jeremybenn
/* BFD back-end for TMS320C30 coff binaries.
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   Copyright 1998, 1999, 2000, 2001, 2002, 2005, 2007, 2008
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   Free Software Foundation, Inc.
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   Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
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6
   This file is part of BFD, the Binary File Descriptor library.
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8
   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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18
   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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   02110-1301, USA.  */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "bfdlink.h"
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#include "coff/tic30.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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static int  coff_tic30_select_reloc PARAMS ((reloc_howto_type *));
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static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
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static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
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reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
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reloc_howto_type tic30_coff_howto_table[] =
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  {
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    HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL,
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           "16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),
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    HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL,
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           "24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE),
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    HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL,
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           "LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE),
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    HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL,
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           "32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE),
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    HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL,
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           "PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),
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    EMPTY_HOWTO (-1)
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  };
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#ifndef coff_bfd_reloc_type_lookup
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#define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup
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#define coff_bfd_reloc_name_lookup tic30_coff_reloc_name_lookup
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/* For the case statement use the code values used in tc_gen_reloc to
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   map to the howto table entries that match those in both the aout
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   and coff implementations.  */
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reloc_howto_type *
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tic30_coff_reloc_type_lookup (abfd, code)
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     bfd *abfd ATTRIBUTE_UNUSED;
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     bfd_reloc_code_real_type code;
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{
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  switch (code)
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    {
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    case BFD_RELOC_8:
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    case BFD_RELOC_TIC30_LDP:
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      return &tic30_coff_howto_table[2];
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    case BFD_RELOC_16:
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      return &tic30_coff_howto_table[0];
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    case BFD_RELOC_24:
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      return &tic30_coff_howto_table[1];
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    case BFD_RELOC_16_PCREL:
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      return &tic30_coff_howto_table[4];
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    case BFD_RELOC_32:
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      return &tic30_coff_howto_table[3];
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    default:
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      return (reloc_howto_type *) NULL;
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    }
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}
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static reloc_howto_type *
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tic30_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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                              const char *r_name)
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{
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  unsigned int i;
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  for (i = 0;
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       i < (sizeof (tic30_coff_howto_table)
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            / sizeof (tic30_coff_howto_table[0]));
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       i++)
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    if (tic30_coff_howto_table[i].name != NULL
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        && strcasecmp (tic30_coff_howto_table[i].name, r_name) == 0)
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      return &tic30_coff_howto_table[i];
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  return NULL;
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}
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#endif
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/* Turn a howto into a reloc number.  */
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static int
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coff_tic30_select_reloc (howto)
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     reloc_howto_type *howto;
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{
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  return howto->type;
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}
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#define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto)
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#define BADMAG(x) TIC30BADMAG(x)
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#define TIC30 1                 /* Customize coffcode.h */
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#define __A_MAGIC_SET__
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/* Code to swap in the reloc */
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#define SWAP_IN_RELOC_OFFSET  H_GET_32
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#define SWAP_OUT_RELOC_OFFSET H_PUT_32
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#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \
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dst->r_stuff[1] = 'C';
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/* Code to turn a r_type into a howto ptr, uses the above howto table.  */
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static void
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rtype2howto (internal, dst)
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     arelent *internal;
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     struct internal_reloc *dst;
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{
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  switch (dst->r_type)
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    {
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    case R_TIC30_ABS16:
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      internal->howto = &tic30_coff_howto_table[0];
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      break;
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    case R_TIC30_ABS24:
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      internal->howto = &tic30_coff_howto_table[1];
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      break;
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    case R_TIC30_ABS32:
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      internal->howto = &tic30_coff_howto_table[3];
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      break;
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    case R_TIC30_LDP:
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      internal->howto = &tic30_coff_howto_table[2];
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      break;
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    case R_TIC30_PC16:
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      internal->howto = &tic30_coff_howto_table[4];
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      break;
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    default:
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      abort ();
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      break;
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    }
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}
154
 
155
#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
156
 
157
/* Perform any necessary magic to the addend in a reloc entry */
158
 
159
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
160
 cache_ptr->addend =  ext_reloc.r_offset;
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162
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
163
 reloc_processing(relent, reloc, symbols, abfd, section)
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static void
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reloc_processing (relent, reloc, symbols, abfd, section)
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     arelent *relent;
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     struct internal_reloc *reloc;
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     asymbol **symbols;
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     bfd *abfd;
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     asection *section;
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{
173
  relent->address = reloc->r_vaddr;
174
  rtype2howto (relent, reloc);
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  if (reloc->r_symndx > 0)
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    relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
178
  else
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    relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
180
 
181
  relent->addend = reloc->r_offset;
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  relent->address -= section->vma;
183
}
184
 
185
#ifndef bfd_pe_print_pdata
186
#define bfd_pe_print_pdata      NULL
187
#endif
188
 
189
#include "coffcode.h"
190
 
191
const bfd_target tic30_coff_vec =
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{
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  "coff-tic30",                 /* name */
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  bfd_target_coff_flavour,
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  BFD_ENDIAN_BIG,               /* data byte order is big */
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  BFD_ENDIAN_LITTLE,            /* header byte order is little */
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  (HAS_RELOC | EXEC_P |         /* object flags */
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   HAS_LINENO | HAS_DEBUG |
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   HAS_SYMS | HAS_LOCALS | WP_TEXT),
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  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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  '_',                          /* leading symbol underscore */
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  '/',                          /* ar_pad_char */
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  15,                           /* ar_max_namelen */
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  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* data */
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  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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  bfd_getl16, bfd_getl_signed_16, bfd_putl16,   /* hdrs */
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  {_bfd_dummy_target, coff_object_p,    /* bfd_check_format */
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   bfd_generic_archive_p, _bfd_dummy_target},
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  {bfd_false, coff_mkobject, _bfd_generic_mkarchive,    /* bfd_set_format */
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   bfd_false},
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  {bfd_false, coff_write_object_contents,       /* bfd_write_contents */
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   _bfd_write_archive_contents, bfd_false},
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  BFD_JUMP_TABLE_GENERIC (coff),
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  BFD_JUMP_TABLE_COPY (coff),
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  BFD_JUMP_TABLE_CORE (_bfd_nocore),
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  BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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  BFD_JUMP_TABLE_SYMBOLS (coff),
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  BFD_JUMP_TABLE_RELOCS (coff),
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  BFD_JUMP_TABLE_WRITE (coff),
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  BFD_JUMP_TABLE_LINK (coff),
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  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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230
  NULL,
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  COFF_SWAP_TABLE
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};

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