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

/* BFD back-end for TMS320C30 coff binaries.
   Copyright 1998, 1999, 2000, 2001, 2002, 2007
   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., 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;
}

#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.
157090f7 AM	2	Copyright 1998, 1999, 2000, 2001, 2002, 2007
157090f7 AM	3	Free Software Foundation, Inc.
252b5132 RH	4	Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
	5
	6	This file is part of BFD, the Binary File Descriptor library.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
3e110533	20	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
53e09e0a	21	02110-1301, USA. */
252b5132	22
252b5132	23	#include "sysdep.h"
3db64b00	24	#include "bfd.h"
252b5132 RH	25	#include "libbfd.h"
	26	#include "bfdlink.h"
	27	#include "coff/tic30.h"
	28	#include "coff/internal.h"
	29	#include "libcoff.h"
	30
f4ffd778 NC	31	static int coff_tic30_select_reloc PARAMS ((reloc_howto_type *));
	32	static void rtype2howto PARAMS ((arelent , struct internal_reloc ));
	33	static void reloc_processing PARAMS ((arelent , struct internal_reloc , asymbol *, bfd , asection *));
	34
	35	reloc_howto_type * tic30_coff_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
	36
252b5132 RH	37	#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
	38
	39	reloc_howto_type tic30_coff_howto_table[] =
f4ffd778	40	{
b34976b6 AM	41	HOWTO (R_TIC30_ABS16, 2, 1, 16, FALSE, 0, 0, NULL,
	42	"16", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),
	43	HOWTO (R_TIC30_ABS24, 2, 2, 24, FALSE, 8, complain_overflow_bitfield, NULL,
	44	"24", FALSE, 0xFFFFFF00, 0xFFFFFF00, FALSE),
	45	HOWTO (R_TIC30_LDP, 18, 0, 24, FALSE, 0, complain_overflow_bitfield, NULL,
	46	"LDP", FALSE, 0x00FF0000, 0x000000FF, FALSE),
	47	HOWTO (R_TIC30_ABS32, 2, 2, 32, FALSE, 0, complain_overflow_bitfield, NULL,
	48	"32", FALSE, 0xFFFFFFFF, 0xFFFFFFFF, FALSE),
	49	HOWTO (R_TIC30_PC16, 2, 1, 16, TRUE, 0, complain_overflow_signed, NULL,
	50	"PCREL", FALSE, 0x0000FFFF, 0x0000FFFF, FALSE),
f4ffd778 NC	51	EMPTY_HOWTO (-1)
f4ffd778 NC	52	};
252b5132 RH	53
	54	#ifndef coff_bfd_reloc_type_lookup
	55	#define coff_bfd_reloc_type_lookup tic30_coff_reloc_type_lookup
157090f7	56	#define coff_bfd_reloc_name_lookup tic30_coff_reloc_name_lookup
252b5132 RH	57
	58	/* For the case statement use the code values used in tc_gen_reloc to
	59	map to the howto table entries that match those in both the aout
cbfe05c4	60	and coff implementations. */
f4ffd778	61
252b5132 RH	62	reloc_howto_type *
252b5132 RH	63	tic30_coff_reloc_type_lookup (abfd, code)
5f771d47	64	bfd *abfd ATTRIBUTE_UNUSED;
252b5132 RH	65	bfd_reloc_code_real_type code;
	66	{
	67	switch (code)
	68	{
	69	case BFD_RELOC_8:
	70	case BFD_RELOC_TIC30_LDP:
	71	return &tic30_coff_howto_table[2];
	72	case BFD_RELOC_16:
	73	return &tic30_coff_howto_table[0];
	74	case BFD_RELOC_24:
	75	return &tic30_coff_howto_table[1];
	76	case BFD_RELOC_16_PCREL:
	77	return &tic30_coff_howto_table[4];
	78	case BFD_RELOC_32:
	79	return &tic30_coff_howto_table[3];
	80	default:
	81	return (reloc_howto_type *) NULL;
	82	}
	83	}
	84
157090f7 AM	85	static reloc_howto_type *
	86	tic30_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
	87	const char *r_name)
	88	{
	89	unsigned int i;
	90
	91	for (i = 0;
	92	i < (sizeof (tic30_coff_howto_table)
	93	/ sizeof (tic30_coff_howto_table[0]));
	94	i++)
	95	if (tic30_coff_howto_table[i].name != NULL
	96	&& strcasecmp (tic30_coff_howto_table[i].name, r_name) == 0)
	97	return &tic30_coff_howto_table[i];
	98
	99	return NULL;
	100	}
	101
252b5132 RH	102	#endif
252b5132 RH	103
f4ffd778	104	/* Turn a howto into a reloc number. */
252b5132 RH	105
	106	static int
	107	coff_tic30_select_reloc (howto)
	108	reloc_howto_type *howto;
	109	{
	110	return howto->type;
	111	}
	112
	113	#define SELECT_RELOC(x,howto) x.r_type = coff_tic30_select_reloc(howto)
	114
252b5132 RH	115	#define BADMAG(x) TIC30BADMAG(x)
	116	#define TIC30 1 /* Customize coffcode.h */
	117	#define __A_MAGIC_SET__
	118
	119	/* Code to swap in the reloc */
dc810e39 AM	120	#define SWAP_IN_RELOC_OFFSET H_GET_32
dc810e39 AM	121	#define SWAP_OUT_RELOC_OFFSET H_PUT_32
252b5132 RH	122	#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) dst->r_stuff[0] = 'S'; \
	123	dst->r_stuff[1] = 'C';
	124
cbfe05c4	125	/* Code to turn a r_type into a howto ptr, uses the above howto table. */
252b5132 RH	126
	127	static void
	128	rtype2howto (internal, dst)
	129	arelent *internal;
	130	struct internal_reloc *dst;
	131	{
	132	switch (dst->r_type)
	133	{
	134	case R_TIC30_ABS16:
	135	internal->howto = &tic30_coff_howto_table[0];
	136	break;
	137	case R_TIC30_ABS24:
	138	internal->howto = &tic30_coff_howto_table[1];
	139	break;
	140	case R_TIC30_ABS32:
	141	internal->howto = &tic30_coff_howto_table[3];
	142	break;
	143	case R_TIC30_LDP:
	144	internal->howto = &tic30_coff_howto_table[2];
	145	break;
	146	case R_TIC30_PC16:
	147	internal->howto = &tic30_coff_howto_table[4];
	148	break;
	149	default:
	150	abort ();
	151	break;
	152	}
	153	}
	154
f4ffd778	155	#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
252b5132 RH	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;
	161
252b5132 RH	162	#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
	163	reloc_processing(relent, reloc, symbols, abfd, section)
	164
	165	static void
	166	reloc_processing (relent, reloc, symbols, abfd, section)
	167	arelent *relent;
	168	struct internal_reloc *reloc;
	169	asymbol **symbols;
	170	bfd *abfd;
	171	asection *section;
	172	{
	173	relent->address = reloc->r_vaddr;
	174	rtype2howto (relent, reloc);
	175
	176	if (reloc->r_symndx > 0)
f4ffd778	177	relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132	178	else
f4ffd778 NC	179	relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
f4ffd778 NC	180
252b5132 RH	181	relent->addend = reloc->r_offset;
	182	relent->address -= section->vma;
	183	}
	184
	185	#include "coffcode.h"
	186
	187	const bfd_target tic30_coff_vec =
	188	{
	189	"coff-tic30", /* name */
	190	bfd_target_coff_flavour,
	191	BFD_ENDIAN_BIG, /* data byte order is big */
	192	BFD_ENDIAN_LITTLE, /* header byte order is little */
	193
	194	(HAS_RELOC \| EXEC_P \| /* object flags */
	195	HAS_LINENO \| HAS_DEBUG \|
	196	HAS_SYMS \| HAS_LOCALS \| WP_TEXT),
	197
	198	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
	199	'_', /* leading symbol underscore */
	200	'/', /* ar_pad_char */
	201	15, /* ar_max_namelen */
	202	bfd_getb64, bfd_getb_signed_64, bfd_putb64,
	203	bfd_getb32, bfd_getb_signed_32, bfd_putb32,
	204	bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
	205	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	206	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	207	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
	208
	209	{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
	210	bfd_generic_archive_p, _bfd_dummy_target},
	211	{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
	212	bfd_false},
	213	{bfd_false, coff_write_object_contents, /* bfd_write_contents */
	214	_bfd_write_archive_contents, bfd_false},
	215
	216	BFD_JUMP_TABLE_GENERIC (coff),
	217	BFD_JUMP_TABLE_COPY (coff),
	218	BFD_JUMP_TABLE_CORE (_bfd_nocore),
	219	BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
	220	BFD_JUMP_TABLE_SYMBOLS (coff),
	221	BFD_JUMP_TABLE_RELOCS (coff),
	222	BFD_JUMP_TABLE_WRITE (coff),
	223	BFD_JUMP_TABLE_LINK (coff),
	224	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	225
c3c89269	226	NULL,
cbfe05c4	227
252b5132 RH	228	COFF_SWAP_TABLE
252b5132 RH	229	};