binutils-gdb/bfd/coff-h8300.c

/* Hitachi H8/300 COFF back-end for BFD.
   Copyright (C) 1990-1991 Free Software Foundation, Inc.
   Written by Steve Chamberlain
   sac@cygnus.com

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 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */


#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "obstack.h"
#include "coff/h8300.h"
#include "coff/internal.h"
#include "libcoff.h"

static reloc_howto_type howto_table[] = 
{
  HOWTO(R_RELBYTE,	       0,  0,  	8,  false, 0, true,  true,0,"8",	true, 0x000000ff,0x000000ff, false),
  HOWTO(R_RELWORD,	       0,  1, 	16, false, 0, true,  true,0,"16",	true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_RELLONG,	       0,  2, 	32, false, 0, true,  true,0,"32",	true, 0xffffffff,0xffffffff, false),
  HOWTO(R_PCRBYTE,	       0,  0, 	8,  true,  0, false, true,0,"DISP8",    true, 0x000000ff,0x000000ff, true),
  HOWTO(R_PCRWORD,	       0,  1, 	16, true,  0, false, true,0,"DISP16",   true, 0x0000ffff,0x0000ffff, true),
  HOWTO(R_PCRLONG,	       0,  2, 	32, true,  0, false, true,0,"DISP32",   true, 0xffffffff,0xffffffff, true),
  HOWTO(R_MOVB1,	       0,  1, 	16, false, 0, true,
	true,0,"16/8",	true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_MOVB2,	       0,  1, 	16, false, 0, true,
	true,0,"8/16",	true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_JMP1,	       0,  1, 	16, false, 0, true,  true,0,"16/pcrel",	true, 0x0000ffff,0x0000ffff, false),
  HOWTO(R_JMP2,	       0,  0,  	8,  false, 0, true,  true,0,"pcrecl/16",	true, 0x000000ff,0x000000ff, false),

};


/* Turn a howto into a reloc number */

#define SELECT_RELOC(x,howto) \
  { x = howto_table[howto->size +(int)howto->pc_relative*3].type; }

#define BADMAG(x) H8300BADMAG(x)
#define H8300 1		/* Customize coffcode.h */
#define __A_MAGIC_SET__



/* Code to swap in the reloc */
#define SWAP_IN_RELOC_OFFSET   bfd_h_get_32
#define SWAP_OUT_RELOC_OFFSET bfd_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 
DEFUN(rtype2howto,(internal, dst),
arelent *internal AND
struct internal_reloc *dst)
{
  switch (dst->r_type) {
    case R_RELBYTE:
      internal->howto =  howto_table+ 0;
      break;
    case R_RELWORD:
      internal->howto =  howto_table+ 1;
      break;    
    case R_PCRBYTE:
      internal->howto =  howto_table+3;
      break;
    case R_PCRWORD:
      internal->howto =  howto_table+ 4;
      break;
    case R_MOVB1:
      internal->howto = howto_table + 6;
      break;
    case R_MOVB2:
      internal->howto = howto_table + 7;
      break;
    case R_JMP1:
      internal->howto = howto_table +8;
      break;

    case R_JMP2:
      internal->howto = howto_table +9;
      break;
      
    default:
fprintf(stderr,"Bad reloc\n");
      break;
    }
}

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


/* Perform any necessaru 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 DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) ,
	   arelent *relent AND
	   struct internal_reloc *reloc AND
	   asymbol **symbols AND
	   bfd *abfd AND
	   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_symbol);
  }
  

  
  relent->addend = reloc->r_offset;
  
  relent->address-= section->vma;
/*  relent->section = 0;*/
}

#include "coffcode.h"


#undef  coff_bfd_get_relocated_section_contents 
#undef coff_bfd_relax_section
#define  coff_bfd_get_relocated_section_contents bfd_coff_get_relocated_section_contents
#define coff_bfd_relax_section bfd_coff_relax_section

bfd_target h8300coff_vec =
{
  "coff-h8300",		/* name */
  bfd_target_coff_flavour,
  true,				/* data byte order is big */
  true,				/* header byte order is big */

  (HAS_RELOC | EXEC_P |		/* object flags */
   HAS_LINENO | HAS_DEBUG |
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
  ( SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
    '_',			/* leading char */
  '/',				/* ar_pad_char */
  15,				/* ar_max_namelen */
  1,				/* minimum section alignment */
_do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
_do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* 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},

     JUMP_TABLE(coff),
    COFF_SWAP_TABLE
};