coff-tic30.c from Gdb at Krugle
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/* BFD back-end for TMS320C30 coff binaries.
Copyright 1998, 1999, 2000, 2001, 2002 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 "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
};
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