[deliverable/binutils-gdb.git] / bfd / coff-tic30.c

/* BFD back-end for TMS320C30 coff binaries.
   Copyright 1998, 1999, 2000, 2001 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 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 "bfd.h"
#include "sysdep.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

/* 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;
    }
}

#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;
}

#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
};
Commit	Line	Data
252b5132	1	/* BFD back-end for TMS320C30 coff binaries.
f4ffd778	2	Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
252b5132 RH	3	Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
	4
	5	This file is part of BFD, the Binary File Descriptor library.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	20	02111-1307, USA. */
	21
	22	#include "bfd.h"
	23	#include "sysdep.h"
	24	#include "libbfd.h"
	25	#include "bfdlink.h"
	26	#include "coff/tic30.h"
	27	#include "coff/internal.h"
	28	#include "libcoff.h"
	29
f4ffd778 NC	30	static int coff_tic30_select_reloc PARAMS ((reloc_howto_type *));
	31	static void rtype2howto PARAMS ((arelent , struct internal_reloc ));
	32	static void reloc_processing PARAMS ((arelent , struct internal_reloc , asymbol *, bfd , asection *));
	33
	34	reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
	35
252b5132 RH	36	#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
	37
	38	reloc_howto_type tic30_coff_howto_table[] =
f4ffd778 NC	39	{
	40	HOWTO (R_TIC30_ABS16, 2, 1, 16, false, 0, 0, NULL,
	41	"16", false, 0x0000FFFF, 0x0000FFFF, false),
	42	HOWTO (R_TIC30_ABS24, 2, 2, 24, false, 8, complain_overflow_bitfield, NULL,
	43	"24", false, 0xFFFFFF00, 0xFFFFFF00, false),
	44	HOWTO (R_TIC30_LDP, 18, 0, 24, false, 0, complain_overflow_bitfield, NULL,
	45	"LDP", false, 0x00FF0000, 0x000000FF, false),
	46	HOWTO (R_TIC30_ABS32, 2, 2, 32, false, 0, complain_overflow_bitfield, NULL,
	47	"32", false, 0xFFFFFFFF, 0xFFFFFFFF, false),
	48	HOWTO (R_TIC30_PC16, 2, 1, 16, true, 0, complain_overflow_signed, NULL,
	49	"PCREL", false, 0x0000FFFF, 0x0000FFFF, false),
	50	EMPTY_HOWTO (-1)
	51	};
252b5132 RH	52
	53	#ifndef coff_bfd_reloc_type_lookup
	54	#define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup
	55
	56	/* For the case statement use the code values used in tc_gen_reloc to
	57	map to the howto table entries that match those in both the aout
cbfe05c4	58	and coff implementations. */
f4ffd778	59
252b5132 RH	60	reloc_howto_type *
252b5132 RH	61	tic30_coff_reloc_type_lookup (abfd, code)
5f771d47	62	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	63	bfd_reloc_code_real_type code;
	64	{
	65	switch (code)
	66	{
	67	case BFD_RELOC_8:
	68	case BFD_RELOC_TIC30_LDP:
	69	return &tic30_coff_howto_table[2];
	70	case BFD_RELOC_16:
	71	return &tic30_coff_howto_table[0];
	72	case BFD_RELOC_24:
	73	return &tic30_coff_howto_table[1];
	74	case BFD_RELOC_16_PCREL:
	75	return &tic30_coff_howto_table[4];
	76	case BFD_RELOC_32:
	77	return &tic30_coff_howto_table[3];
	78	default:
	79	return (reloc_howto_type *) NULL;
	80	}
	81	}
	82
	83	#endif
	84
f4ffd778	85	/* Turn a howto into a reloc number. */
252b5132 RH	86
	87	static int
	88	coff_tic30_select_reloc (howto)
	89	reloc_howto_type *howto;
	90	{
	91	return howto->type;
	92	}
	93
	94	#define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto)
	95
252b5132 RH	96	#define BADMAG(x) TIC30BADMAG(x)
	97	#define TIC30 1 /* Customize coffcode.h */
	98	#define __A_MAGIC_SET__
	99
	100	/* Code to swap in the reloc */
dc810e39 AM	101	#define SWAP_IN_RELOC_OFFSET H_GET_32
dc810e39 AM	102	#define SWAP_OUT_RELOC_OFFSET H_PUT_32
252b5132 RH	103	#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \
	104	dst->r_stuff[1] = 'C';
	105
cbfe05c4	106	/* Code to turn a r_type into a howto ptr, uses the above howto table. */
252b5132 RH	107
	108	static void
	109	rtype2howto (internal, dst)
	110	arelent *internal;
	111	struct internal_reloc *dst;
	112	{
	113	switch (dst->r_type)
	114	{
	115	case R_TIC30_ABS16:
	116	internal->howto = &tic30_coff_howto_table[0];
	117	break;
	118	case R_TIC30_ABS24:
	119	internal->howto = &tic30_coff_howto_table[1];
	120	break;
	121	case R_TIC30_ABS32:
	122	internal->howto = &tic30_coff_howto_table[3];
	123	break;
	124	case R_TIC30_LDP:
	125	internal->howto = &tic30_coff_howto_table[2];
	126	break;
	127	case R_TIC30_PC16:
	128	internal->howto = &tic30_coff_howto_table[4];
	129	break;
	130	default:
	131	abort ();
	132	break;
	133	}
	134	}
	135
f4ffd778	136	#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
252b5132 RH	137
	138	/* Perform any necessary magic to the addend in a reloc entry */
	139
	140	#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
	141	cache_ptr->addend = ext_reloc.r_offset;
	142
252b5132 RH	143	#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
	144	reloc_processing(relent, reloc, symbols, abfd, section)
	145
	146	static void
	147	reloc_processing (relent, reloc, symbols, abfd, section)
	148	arelent *relent;
	149	struct internal_reloc *reloc;
	150	asymbol **symbols;
	151	bfd *abfd;
	152	asection *section;
	153	{
	154	relent->address = reloc->r_vaddr;
	155	rtype2howto (relent, reloc);
	156
	157	if (reloc->r_symndx > 0)
f4ffd778	158	relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132	159	else
f4ffd778 NC	160	relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
f4ffd778 NC	161
252b5132 RH	162	relent->addend = reloc->r_offset;
	163	relent->address -= section->vma;
	164	}
	165
	166	#include "coffcode.h"
	167
	168	const bfd_target tic30_coff_vec =
	169	{
	170	"coff-tic30", /* name */
	171	bfd_target_coff_flavour,
	172	BFD_ENDIAN_BIG, /* data byte order is big */
	173	BFD_ENDIAN_LITTLE, /* header byte order is little */
	174
	175	(HAS_RELOC \| EXEC_P \| /* object flags */
	176	HAS_LINENO \| HAS_DEBUG \|
	177	HAS_SYMS \| HAS_LOCALS \| WP_TEXT),
	178
	179	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	180	'_', /* leading symbol underscore */
	181	'/', /* ar_pad_char */
	182	15, /* ar_max_namelen */
	183	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	184	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	185	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	186	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	187	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	188	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
	189
	190	{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
	191	bfd_generic_archive_p, _bfd_dummy_target},
	192	{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
	193	bfd_false},
	194	{bfd_false, coff_write_object_contents, /* bfd_write_contents */
	195	_bfd_write_archive_contents, bfd_false},
	196
	197	BFD_JUMP_TABLE_GENERIC (coff),
	198	BFD_JUMP_TABLE_COPY (coff),
	199	BFD_JUMP_TABLE_CORE (_bfd_nocore),
	200	BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
	201	BFD_JUMP_TABLE_SYMBOLS (coff),
	202	BFD_JUMP_TABLE_RELOCS (coff),
	203	BFD_JUMP_TABLE_WRITE (coff),
	204	BFD_JUMP_TABLE_LINK (coff),
	205	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	206
c3c89269	207	NULL,
cbfe05c4	208
252b5132 RH	209	COFF_SWAP_TABLE
252b5132 RH	210	};