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243 lines
7.1 KiB
C
243 lines
7.1 KiB
C
/* BFD back-end for TMS320C30 coff binaries.
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Copyright (C) 1998-2023 Free Software Foundation, Inc.
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Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
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This file is part of BFD, the Binary File Descriptor library.
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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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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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#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, 2, 16, false, 0, 0, NULL,
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"16", false, 0x0000FFFF, 0x0000FFFF, false),
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HOWTO (R_TIC30_ABS24, 2, 4, 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, 1, 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, 4, 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, 2, 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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static reloc_howto_type *
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tic30_coff_reloc_type_lookup (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 (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 (arelent *internal, 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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internal->howto = NULL;
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break;
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}
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}
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#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
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/* Perform any necessary magic to the addend in a reloc entry */
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#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
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cache_ptr->addend = ext_reloc.r_offset;
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#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
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reloc_processing(relent, reloc, symbols, abfd, section)
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static void
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reloc_processing (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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{
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relent->address = reloc->r_vaddr;
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rtype2howto (relent, reloc);
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if (reloc->r_symndx == -1 || symbols == NULL)
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relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
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else if (reloc->r_symndx >= 0 && reloc->r_symndx < obj_conv_table_size (abfd))
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relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
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else
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{
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_bfd_error_handler
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/* xgettext:c-format */
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(_("%pB: warning: illegal symbol index %ld in relocs"),
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abfd, reloc->r_symndx);
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relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
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}
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relent->addend = reloc->r_offset;
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relent->address -= section->vma;
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}
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#ifndef bfd_pe_print_pdata
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#define bfd_pe_print_pdata NULL
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#endif
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#include "coffcode.h"
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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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0, /* match priority. */
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TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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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_check_format */
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_bfd_dummy_target,
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coff_object_p,
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bfd_generic_archive_p,
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_bfd_dummy_target
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},
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{ /* bfd_set_format */
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_bfd_bool_bfd_false_error,
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coff_mkobject,
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_bfd_generic_mkarchive,
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_bfd_bool_bfd_false_error
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},
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{ /* bfd_write_contents */
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_bfd_bool_bfd_false_error,
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coff_write_object_contents,
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_bfd_write_archive_contents,
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_bfd_bool_bfd_false_error
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},
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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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NULL,
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COFF_SWAP_TABLE
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};
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