dc810e3900
o bfd_read and bfd_write lose an unnecessary param and become
bfd_bread and bfd_bwrite.
o bfd_*alloc now all take a bfd_size_type arg, and will error if
size_t is too small. eg. 32 bit host, 64 bit bfd, verrry big files
or bugs in linker scripts etc.
o file_ptr becomes a bfd_signed_vma. Besides matching sizes with
various other types involved in handling sections, this should make
it easier for bfd to support a 64 bit off_t on 32 bit hosts that
provide it.
o I've made the H_GET_* and H_PUT_* macros (which invoke bfd_h_{get,put}_*)
generally available. They now cast their args to bfd_vma and
bfd_byte * as appropriate, which removes a swag of casts from the
source.
o Bug fixes to bfd_get8, aix386_core_vec, elf32_h8_relax_section, and
aout-encap.c.
o Zillions of formatting and -Wconversion fixes.
1086 lines
33 KiB
C
1086 lines
33 KiB
C
/* BFD back-end for TMS320C30 a.out binaries.
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Copyright 1998, 1999, 2000, 2001 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 2 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., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#define TARGET_IS_BIG_ENDIAN_P
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#define N_HEADER_IN_TEXT(x) 1
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#define BYTES_IN_WORD 4
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#define TEXT_START_ADDR 1024
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#define TARGET_PAGE_SIZE 128
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#define SEGMENT_SIZE TARGET_PAGE_SIZE
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#define DEFAULT_ARCH bfd_arch_tic30
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#define ARCH_SIZE 32
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#define MY(OP) CAT(tic30_aout_,OP)
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#define TARGETNAME "a.out-tic30"
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#define NAME(x,y) CAT3(tic30_aout,_32_,y)
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#include "bfd.h"
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#include "sysdep.h"
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#include "libaout.h"
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#include "aout/aout64.h"
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#include "aout/stab_gnu.h"
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#include "aout/ar.h"
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static bfd_reloc_status_type tic30_aout_fix_16
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type tic30_aout_fix_32
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type tic30_aout_fix_pcrel_16
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *tic30_aout_reloc_howto
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PARAMS ((bfd *, struct reloc_std_external *, int *, int *, int *));
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static bfd_reloc_status_type tic30_aout_relocate_contents
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PARAMS ((reloc_howto_type *, bfd *, bfd_vma, bfd_byte *));
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static bfd_reloc_status_type tic30_aout_final_link_relocate
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PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma,
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bfd_vma, bfd_vma));
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static const bfd_target *tic30_aout_object_p PARAMS ((bfd *));
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static boolean tic30_aout_write_object_contents PARAMS ((bfd *));
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static boolean tic30_aout_set_sizes PARAMS ((bfd *));
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static const bfd_target * tic30_aout_callback PARAMS ((bfd *));
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static boolean MY_bfd_copy_private_section_data
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PARAMS ((bfd *, asection *, bfd *, asection *));
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static boolean MY_bfd_final_link PARAMS ((bfd *, struct bfd_link_info *));
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reloc_howto_type * tic30_aout_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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enum machine_type tic30_aout_machine_type
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PARAMS ((enum bfd_architecture, unsigned long, boolean *));
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boolean tic30_aout_set_arch_mach
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PARAMS ((bfd *, enum bfd_architecture, unsigned long));
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#define MY_reloc_howto(BFD, REL, IN, EX, PC) \
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tic30_aout_reloc_howto(BFD, REL, &IN, &EX, &PC)
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#define MY_final_link_relocate tic30_aout_final_link_relocate
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#define MY_object_p tic30_aout_object_p
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#define MY_mkobject NAME(aout,mkobject)
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#define MY_write_object_contents tic30_aout_write_object_contents
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#define MY_set_sizes tic30_aout_set_sizes
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#ifndef MY_exec_hdr_flags
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#define MY_exec_hdr_flags 1
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#endif
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#ifndef MY_backend_data
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#ifndef MY_zmagic_contiguous
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#define MY_zmagic_contiguous 0
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#endif
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#ifndef MY_text_includes_header
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#define MY_text_includes_header 0
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#endif
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#ifndef MY_entry_is_text_address
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#define MY_entry_is_text_address 0
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#endif
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#ifndef MY_exec_header_not_counted
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#define MY_exec_header_not_counted 1
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#endif
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#ifndef MY_add_dynamic_symbols
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#define MY_add_dynamic_symbols 0
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#endif
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#ifndef MY_add_one_symbol
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#define MY_add_one_symbol 0
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#endif
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#ifndef MY_link_dynamic_object
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#define MY_link_dynamic_object 0
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#endif
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#ifndef MY_write_dynamic_symbol
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#define MY_write_dynamic_symbol 0
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#endif
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#ifndef MY_check_dynamic_reloc
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#define MY_check_dynamic_reloc 0
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#endif
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#ifndef MY_finish_dynamic_link
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#define MY_finish_dynamic_link 0
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#endif
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static const struct aout_backend_data tic30_aout_backend_data =
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{
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MY_zmagic_contiguous,
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MY_text_includes_header,
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MY_entry_is_text_address,
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MY_exec_hdr_flags,
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0, /* text vma? */
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MY_set_sizes,
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MY_exec_header_not_counted,
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MY_add_dynamic_symbols,
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MY_add_one_symbol,
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MY_link_dynamic_object,
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MY_write_dynamic_symbol,
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MY_check_dynamic_reloc,
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MY_finish_dynamic_link
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};
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#define MY_backend_data &tic30_aout_backend_data
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#endif
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/* FIXME: This is wrong. aoutx.h should really only be included by
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aout32.c. */
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#include "aoutx.h"
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/* This table lists the relocation types for the TMS320C30. There are
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only a few relocations required, and all must be divided by 4 (>>
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2) to get the 32-bit addresses in the format the TMS320C30 likes
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it. */
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reloc_howto_type tic30_aout_howto_table[] =
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{
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EMPTY_HOWTO (-1),
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HOWTO (1, 2, 1, 16, false, 0, 0, tic30_aout_fix_16,
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"16", false, 0x0000FFFF, 0x0000FFFF, false),
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HOWTO (2, 2, 2, 24, false, 0, complain_overflow_bitfield, NULL,
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"24", false, 0x00FFFFFF, 0x00FFFFFF, false),
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HOWTO (3, 18, 3, 24, false, 0, complain_overflow_bitfield, NULL,
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"LDP", false, 0x00FF0000, 0x000000FF, false),
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HOWTO (4, 2, 4, 32, false, 0, complain_overflow_bitfield, tic30_aout_fix_32,
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"32", false, 0xFFFFFFFF, 0xFFFFFFFF, false),
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HOWTO (5, 2, 1, 16, true, 0, complain_overflow_signed,
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tic30_aout_fix_pcrel_16, "PCREL", true, 0x0000FFFF, 0x0000FFFF, true),
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EMPTY_HOWTO (-1),
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EMPTY_HOWTO (-1),
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EMPTY_HOWTO (-1),
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EMPTY_HOWTO (-1),
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EMPTY_HOWTO (-1)
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};
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extern reloc_howto_type *NAME (aout, reloc_type_lookup)
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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reloc_howto_type *
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tic30_aout_reloc_type_lookup (abfd, code)
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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_aout_howto_table[3];
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case BFD_RELOC_16:
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return &tic30_aout_howto_table[1];
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case BFD_RELOC_24:
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return &tic30_aout_howto_table[2];
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case BFD_RELOC_16_PCREL:
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return &tic30_aout_howto_table[5];
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case BFD_RELOC_32:
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return &tic30_aout_howto_table[4];
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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_aout_reloc_howto (abfd, relocs, r_index, r_extern, r_pcrel)
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bfd *abfd;
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struct reloc_std_external *relocs;
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int *r_index;
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int *r_extern;
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int *r_pcrel;
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{
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unsigned int r_length;
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unsigned int r_pcrel_done;
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int index;
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*r_pcrel = 0;
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if (bfd_header_big_endian (abfd))
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{
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*r_index = ((relocs->r_index[0] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[2]);
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*r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
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r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
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r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) >> RELOC_STD_BITS_LENGTH_SH_BIG);
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}
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else
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{
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*r_index = ((relocs->r_index[2] << 16) | (relocs->r_index[1] << 8) | relocs->r_index[0]);
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*r_extern = (0 != (relocs->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
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r_pcrel_done = (0 != (relocs->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
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r_length = ((relocs->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
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}
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index = r_length + 4 * r_pcrel_done;
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return tic30_aout_howto_table + index;
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}
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/* This function is used as a callback for 16-bit relocs. This is
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required for relocations between segments. A line in aoutx.h
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requires that any relocations for the data section should point to
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the end of the aligned text section, plus an offset. By default,
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this does not happen, therefore this function takes care of
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that. */
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static bfd_reloc_status_type
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tic30_aout_fix_16 (abfd, reloc_entry, symbol, data, input_section, output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section ATTRIBUTE_UNUSED;
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bfd *output_bfd;
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char **error_message ATTRIBUTE_UNUSED;
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{
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bfd_vma relocation;
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/* Make sure that the symbol's section is defined. */
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if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
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return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
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/* Get the size of the input section and turn it into the TMS320C30
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32-bit address format. */
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relocation = (symbol->section->vma >> 2);
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relocation += bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
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bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
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return bfd_reloc_ok;
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}
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/* This function does the same thing as tic30_aout_fix_16 except for 32
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bit relocations. */
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static bfd_reloc_status_type
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tic30_aout_fix_32 (abfd, reloc_entry, symbol, data, input_section,
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output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section ATTRIBUTE_UNUSED;
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bfd *output_bfd;
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char **error_message ATTRIBUTE_UNUSED;
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{
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bfd_vma relocation;
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/* Make sure that the symbol's section is defined. */
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if (symbol->section == &bfd_und_section && (symbol->flags & BSF_WEAK) == 0)
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return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
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/* Get the size of the input section and turn it into the TMS320C30
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32-bit address format. */
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relocation = (symbol->section->vma >> 2);
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relocation += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
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bfd_put_32 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
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return bfd_reloc_ok;
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}
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/* This function is used to work out pc-relative offsets for the
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TMS320C30. The data already placed by md_pcrel_from within gas is
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useless for a relocation, so we just get the offset value and place
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a version of this within the object code.
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tic30_aout_final_link_relocate will then calculate the required
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relocation to add on to the value in the object code. */
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static bfd_reloc_status_type
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tic30_aout_fix_pcrel_16 (abfd, reloc_entry, symbol, data, input_section,
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output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol ATTRIBUTE_UNUSED;
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PTR data;
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asection *input_section ATTRIBUTE_UNUSED;
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bfd *output_bfd ATTRIBUTE_UNUSED;
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char **error_message ATTRIBUTE_UNUSED;
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{
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bfd_vma relocation = 1;
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bfd_byte offset_data = bfd_get_8 (abfd, (bfd_byte *) data + reloc_entry->address - 1);
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/* The byte before the location of the fix contains bits 23-16 of
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the pcrel instruction. Bit 21 is set for a delayed instruction
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which requires on offset of 3 instead of 1. */
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if (offset_data & 0x20)
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relocation -= 3;
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else
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relocation -= 1;
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bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
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return bfd_reloc_ok;
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}
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/* These macros will get 24-bit values from the bfd definition.
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Big-endian only. */
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#define bfd_getb_24(BFD,ADDR) \
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(bfd_get_8 (BFD, ADDR ) << 16) | \
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(bfd_get_8 (BFD, ADDR + 1) << 8) | \
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(bfd_get_8 (BFD, ADDR + 2) )
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#define bfd_putb_24(BFD,DATA,ADDR) \
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bfd_put_8 (BFD, (bfd_byte) ((DATA >> 16) & 0xFF), ADDR ); \
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bfd_put_8 (BFD, (bfd_byte) ((DATA >> 8) & 0xFF), ADDR + 1); \
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bfd_put_8 (BFD, (bfd_byte) ( DATA & 0xFF), ADDR + 2)
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|
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/* Set parameters about this a.out file that are machine-dependent.
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This routine is called from some_aout_object_p just before it returns. */
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|
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static const bfd_target *
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tic30_aout_callback (abfd)
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bfd *abfd;
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{
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struct internal_exec *execp = exec_hdr (abfd);
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unsigned int arch_align_power;
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unsigned long arch_align;
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/* Calculate the file positions of the parts of a newly read aout header. */
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obj_textsec (abfd)->_raw_size = N_TXTSIZE (*execp);
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|
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/* The virtual memory addresses of the sections. */
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obj_textsec (abfd)->vma = N_TXTADDR (*execp);
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obj_datasec (abfd)->vma = N_DATADDR (*execp);
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obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
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|
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obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
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obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
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obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
|
|
|
|
/* The file offsets of the sections. */
|
|
obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
|
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obj_datasec (abfd)->filepos = N_DATOFF (*execp);
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|
|
|
/* The file offsets of the relocation info. */
|
|
obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
|
|
obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
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|
|
|
/* The file offsets of the string table and symbol table. */
|
|
obj_sym_filepos (abfd) = N_SYMOFF (*execp);
|
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obj_str_filepos (abfd) = N_STROFF (*execp);
|
|
|
|
/* Determine the architecture and machine type of the object file. */
|
|
#ifdef SET_ARCH_MACH
|
|
SET_ARCH_MACH (abfd, *execp);
|
|
#else
|
|
bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0L);
|
|
#endif
|
|
|
|
/* Now that we know the architecture, set the alignments of the
|
|
sections. This is normally done by NAME(aout,new_section_hook),
|
|
but when the initial sections were created the architecture had
|
|
not yet been set. However, for backward compatibility, we don't
|
|
set the alignment power any higher than as required by the size
|
|
of the section. */
|
|
arch_align_power = bfd_get_arch_info (abfd)->section_align_power;
|
|
arch_align = 1 << arch_align_power;
|
|
if ((BFD_ALIGN (obj_textsec (abfd)->_raw_size, arch_align)
|
|
== obj_textsec (abfd)->_raw_size)
|
|
&& (BFD_ALIGN (obj_datasec (abfd)->_raw_size, arch_align)
|
|
== obj_datasec (abfd)->_raw_size)
|
|
&& (BFD_ALIGN (obj_bsssec (abfd)->_raw_size, arch_align)
|
|
== obj_bsssec (abfd)->_raw_size))
|
|
{
|
|
obj_textsec (abfd)->alignment_power = arch_align_power;
|
|
obj_datasec (abfd)->alignment_power = arch_align_power;
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|
obj_bsssec (abfd)->alignment_power = arch_align_power;
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|
}
|
|
return abfd->xvec;
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|
}
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|
|
static bfd_reloc_status_type
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tic30_aout_final_link_relocate (howto, input_bfd, input_section, contents,
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address, value, addend)
|
|
reloc_howto_type *howto;
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bfd *input_bfd;
|
|
asection *input_section;
|
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bfd_byte *contents;
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bfd_vma address;
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bfd_vma value;
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bfd_vma addend;
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{
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|
bfd_vma relocation;
|
|
|
|
if (address > input_section->_raw_size)
|
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return bfd_reloc_outofrange;
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|
|
relocation = value + addend;
|
|
if (howto->pc_relative)
|
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{
|
|
relocation -= (input_section->output_section->vma + input_section->output_offset);
|
|
if (howto->pcrel_offset)
|
|
relocation -= address;
|
|
}
|
|
return tic30_aout_relocate_contents (howto, input_bfd, relocation,
|
|
contents + address);
|
|
}
|
|
|
|
bfd_reloc_status_type
|
|
tic30_aout_relocate_contents (howto, input_bfd, relocation, location)
|
|
reloc_howto_type *howto;
|
|
bfd *input_bfd;
|
|
bfd_vma relocation;
|
|
bfd_byte *location;
|
|
{
|
|
bfd_vma x;
|
|
boolean overflow;
|
|
|
|
if (howto->size < 0)
|
|
relocation = -relocation;
|
|
|
|
switch (howto->size)
|
|
{
|
|
default:
|
|
case 0:
|
|
abort ();
|
|
break;
|
|
case 1:
|
|
x = bfd_get_16 (input_bfd, location);
|
|
break;
|
|
case 2:
|
|
x = bfd_getb_24 (input_bfd, location);
|
|
break;
|
|
case 3:
|
|
x = bfd_get_8 (input_bfd, location);
|
|
break;
|
|
case 4:
|
|
x = bfd_get_32 (input_bfd, location);
|
|
break;
|
|
}
|
|
|
|
overflow = false;
|
|
|
|
if (howto->complain_on_overflow != complain_overflow_dont)
|
|
{
|
|
bfd_vma check;
|
|
bfd_signed_vma signed_check;
|
|
bfd_vma add;
|
|
bfd_signed_vma signed_add;
|
|
|
|
if (howto->rightshift == 0)
|
|
{
|
|
check = relocation;
|
|
signed_check = (bfd_signed_vma) relocation;
|
|
}
|
|
else
|
|
{
|
|
check = relocation >> howto->rightshift;
|
|
if ((bfd_signed_vma) relocation >= 0)
|
|
signed_check = check;
|
|
else
|
|
signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift)));
|
|
}
|
|
add = x & howto->src_mask;
|
|
signed_add = add;
|
|
if ((add & (((~howto->src_mask) >> 1) & howto->src_mask)) != 0)
|
|
signed_add -= (((~howto->src_mask) >> 1) & howto->src_mask) << 1;
|
|
if (howto->bitpos == 0)
|
|
{
|
|
check += add;
|
|
signed_check += signed_add;
|
|
}
|
|
else
|
|
{
|
|
check += add >> howto->bitpos;
|
|
if (signed_add >= 0)
|
|
signed_check += add >> howto->bitpos;
|
|
else
|
|
signed_check += ((add >> howto->bitpos) | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->bitpos)));
|
|
}
|
|
switch (howto->complain_on_overflow)
|
|
{
|
|
case complain_overflow_signed:
|
|
{
|
|
bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
|
|
bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
|
|
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
|
|
overflow = true;
|
|
}
|
|
break;
|
|
case complain_overflow_unsigned:
|
|
{
|
|
bfd_vma reloc_unsigned_max = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
|
|
if (check > reloc_unsigned_max)
|
|
overflow = true;
|
|
}
|
|
break;
|
|
case complain_overflow_bitfield:
|
|
{
|
|
bfd_vma reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
|
|
if ((check & ~reloc_bits) != 0
|
|
&& (((bfd_vma) signed_check & ~reloc_bits)
|
|
!= ((bfd_vma) -1 & ~reloc_bits)))
|
|
overflow = true;
|
|
}
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
relocation >>= (bfd_vma) howto->rightshift;
|
|
relocation <<= (bfd_vma) howto->bitpos;
|
|
x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask));
|
|
switch (howto->size)
|
|
{
|
|
default:
|
|
case 0:
|
|
abort ();
|
|
break;
|
|
case 1:
|
|
bfd_put_16 (input_bfd, x, location);
|
|
break;
|
|
case 2:
|
|
bfd_putb_24 (input_bfd, x, location);
|
|
break;
|
|
case 3:
|
|
bfd_put_8 (input_bfd, x, location);
|
|
break;
|
|
case 4:
|
|
bfd_put_32 (input_bfd, x, location);
|
|
break;
|
|
}
|
|
return overflow ? bfd_reloc_overflow : bfd_reloc_ok;
|
|
}
|
|
|
|
/* Finish up the reading of an a.out file header. */
|
|
|
|
static const bfd_target *
|
|
tic30_aout_object_p (abfd)
|
|
bfd *abfd;
|
|
{
|
|
struct external_exec exec_bytes; /* Raw exec header from file. */
|
|
struct internal_exec exec; /* Cleaned-up exec header. */
|
|
const bfd_target *target;
|
|
bfd_size_type amt = EXEC_BYTES_SIZE;
|
|
|
|
if (bfd_bread ((PTR) &exec_bytes, amt, abfd) != amt)
|
|
{
|
|
if (bfd_get_error () != bfd_error_system_call)
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef SWAP_MAGIC
|
|
exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
|
|
#else
|
|
exec.a_info = H_GET_32 (abfd, exec_bytes.e_info);
|
|
#endif /* SWAP_MAGIC */
|
|
|
|
if (N_BADMAG (exec))
|
|
return 0;
|
|
#ifdef MACHTYPE_OK
|
|
if (!(MACHTYPE_OK (N_MACHTYPE (exec))))
|
|
return 0;
|
|
#endif
|
|
|
|
NAME (aout, swap_exec_header_in) (abfd, &exec_bytes, &exec);
|
|
|
|
#ifdef SWAP_MAGIC
|
|
/* swap_exec_header_in read in a_info with the wrong byte order */
|
|
exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
|
|
#endif /* SWAP_MAGIC */
|
|
|
|
target = NAME (aout, some_aout_object_p) (abfd, &exec, tic30_aout_callback);
|
|
|
|
#ifdef ENTRY_CAN_BE_ZERO
|
|
/* The NEWSOS3 entry-point is/was 0, which (amongst other lossage)
|
|
means that it isn't obvious if EXEC_P should be set.
|
|
All of the following must be true for an executable:
|
|
There must be no relocations, the bfd can be neither an
|
|
archive nor an archive element, and the file must be executable. */
|
|
|
|
if (exec.a_trsize + exec.a_drsize == 0
|
|
&& bfd_get_format (abfd) == bfd_object && abfd->my_archive == NULL)
|
|
{
|
|
struct stat buf;
|
|
#ifndef S_IXUSR
|
|
#define S_IXUSR 0100 /* Execute by owner. */
|
|
#endif
|
|
if (stat (abfd->filename, &buf) == 0 && (buf.st_mode & S_IXUSR))
|
|
abfd->flags |= EXEC_P;
|
|
}
|
|
#endif /* ENTRY_CAN_BE_ZERO */
|
|
|
|
return target;
|
|
}
|
|
|
|
/* Copy private section data. This actually does nothing with the
|
|
sections. It copies the subformat field. We copy it here, because
|
|
we need to know whether this is a QMAGIC file before we set the
|
|
section contents, and copy_private_bfd_data is not called until
|
|
after the section contents have been set. */
|
|
|
|
static boolean
|
|
MY_bfd_copy_private_section_data (ibfd, isec, obfd, osec)
|
|
bfd *ibfd;
|
|
asection *isec ATTRIBUTE_UNUSED;
|
|
bfd *obfd;
|
|
asection *osec ATTRIBUTE_UNUSED;
|
|
{
|
|
if (bfd_get_flavour (obfd) == bfd_target_aout_flavour)
|
|
obj_aout_subformat (obfd) = obj_aout_subformat (ibfd);
|
|
return true;
|
|
}
|
|
|
|
/* Write an object file.
|
|
Section contents have already been written. We write the
|
|
file header, symbols, and relocation. */
|
|
|
|
static boolean
|
|
tic30_aout_write_object_contents (abfd)
|
|
bfd *abfd;
|
|
{
|
|
struct external_exec exec_bytes;
|
|
struct internal_exec *execp = exec_hdr (abfd);
|
|
|
|
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
|
|
|
|
{
|
|
bfd_size_type text_size; /* Dummy vars. */
|
|
file_ptr text_end;
|
|
|
|
if (adata (abfd).magic == undecided_magic)
|
|
NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end);
|
|
|
|
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;
|
|
execp->a_entry = bfd_get_start_address (abfd);
|
|
|
|
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
|
|
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * obj_reloc_entry_size (abfd));
|
|
NAME (aout, swap_exec_header_out) (abfd, execp, &exec_bytes);
|
|
|
|
if (adata (abfd).exec_bytes_size > 0)
|
|
{
|
|
bfd_size_type amt;
|
|
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
|
|
return false;
|
|
amt = adata (abfd).exec_bytes_size;
|
|
if (bfd_bwrite ((PTR) &exec_bytes, amt, abfd) != amt)
|
|
return false;
|
|
}
|
|
|
|
/* Now write out reloc info, followed by syms and strings. */
|
|
if (bfd_get_outsymbols (abfd) != (asymbol **) NULL
|
|
&& bfd_get_symcount (abfd) != 0)
|
|
{
|
|
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*execp)), SEEK_SET) != 0)
|
|
return false;
|
|
|
|
if (!NAME (aout, write_syms) (abfd))
|
|
return false;
|
|
}
|
|
|
|
if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)
|
|
return false;
|
|
if (!NAME (aout, squirt_out_relocs) (abfd, obj_textsec (abfd)))
|
|
return false;
|
|
|
|
if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)
|
|
return false;
|
|
if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd)))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static boolean
|
|
tic30_aout_set_sizes (abfd)
|
|
bfd *abfd;
|
|
{
|
|
adata (abfd).page_size = TARGET_PAGE_SIZE;
|
|
|
|
#ifdef SEGMENT_SIZE
|
|
adata (abfd).segment_size = SEGMENT_SIZE;
|
|
#else
|
|
adata (abfd).segment_size = TARGET_PAGE_SIZE;
|
|
#endif
|
|
|
|
#ifdef ZMAGIC_DISK_BLOCK_SIZE
|
|
adata (abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE;
|
|
#else
|
|
adata (abfd).zmagic_disk_block_size = TARGET_PAGE_SIZE;
|
|
#endif
|
|
|
|
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifndef MY_final_link_callback
|
|
|
|
/* Callback for the final_link routine to set the section offsets. */
|
|
|
|
static void MY_final_link_callback
|
|
PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
|
|
|
|
static void
|
|
MY_final_link_callback (abfd, ptreloff, pdreloff, psymoff)
|
|
bfd *abfd;
|
|
file_ptr *ptreloff;
|
|
file_ptr *pdreloff;
|
|
file_ptr *psymoff;
|
|
{
|
|
struct internal_exec *execp = exec_hdr (abfd);
|
|
|
|
*ptreloff = obj_datasec (abfd)->filepos + execp->a_data;
|
|
*pdreloff = *ptreloff + execp->a_trsize;
|
|
*psymoff = *pdreloff + execp->a_drsize;;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef MY_bfd_final_link
|
|
|
|
/* Final link routine. We need to use a call back to get the correct
|
|
offsets in the output file. */
|
|
|
|
static boolean
|
|
MY_bfd_final_link (abfd, info)
|
|
bfd *abfd;
|
|
struct bfd_link_info *info;
|
|
{
|
|
struct internal_exec *execp = exec_hdr (abfd);
|
|
file_ptr pos;
|
|
bfd_vma vma = 0;
|
|
int pad;
|
|
|
|
/* Set the executable header size to 0, as we don't want one for an
|
|
output. */
|
|
adata (abfd).exec_bytes_size = 0;
|
|
pos = adata (abfd).exec_bytes_size;
|
|
/* Text. */
|
|
vma = info->create_object_symbols_section->vma;
|
|
pos += vma;
|
|
obj_textsec (abfd)->filepos = pos;
|
|
obj_textsec (abfd)->vma = vma;
|
|
obj_textsec (abfd)->user_set_vma = 1;
|
|
pos += obj_textsec (abfd)->_raw_size;
|
|
vma += obj_textsec (abfd)->_raw_size;
|
|
|
|
/* Data. */
|
|
if (abfd->flags & D_PAGED)
|
|
{
|
|
if (info->create_object_symbols_section->next->vma > 0)
|
|
obj_datasec (abfd)->vma = info->create_object_symbols_section->next->vma;
|
|
else
|
|
obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
|
|
}
|
|
else
|
|
{
|
|
obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
|
|
}
|
|
|
|
if (obj_datasec (abfd)->vma < vma)
|
|
obj_datasec (abfd)->vma = BFD_ALIGN (vma, 4);
|
|
|
|
obj_datasec (abfd)->user_set_vma = 1;
|
|
vma = obj_datasec (abfd)->vma;
|
|
obj_datasec (abfd)->filepos = vma + adata (abfd).exec_bytes_size;
|
|
execp->a_text = vma - obj_textsec (abfd)->vma;
|
|
obj_textsec (abfd)->_raw_size = execp->a_text;
|
|
|
|
/* Since BSS follows data immediately, see if it needs alignment. */
|
|
vma += obj_datasec (abfd)->_raw_size;
|
|
pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
|
|
obj_datasec (abfd)->_raw_size += pad;
|
|
pos += obj_datasec (abfd)->_raw_size;
|
|
execp->a_data = obj_datasec (abfd)->_raw_size;
|
|
|
|
/* BSS. */
|
|
obj_bsssec (abfd)->vma = vma;
|
|
obj_bsssec (abfd)->user_set_vma = 1;
|
|
|
|
/* We are fully resized, so don't readjust in final_link. */
|
|
adata (abfd).magic = z_magic;
|
|
|
|
return NAME (aout, final_link) (abfd, info, MY_final_link_callback);
|
|
}
|
|
|
|
#endif
|
|
|
|
enum machine_type
|
|
tic30_aout_machine_type (arch, machine, unknown)
|
|
enum bfd_architecture arch;
|
|
unsigned long machine ATTRIBUTE_UNUSED;
|
|
boolean *unknown;
|
|
{
|
|
enum machine_type arch_flags;
|
|
|
|
arch_flags = M_UNKNOWN;
|
|
*unknown = true;
|
|
|
|
switch (arch)
|
|
{
|
|
case bfd_arch_tic30:
|
|
*unknown = false;
|
|
break;
|
|
default:
|
|
arch_flags = M_UNKNOWN;
|
|
}
|
|
if (arch_flags != M_UNKNOWN)
|
|
*unknown = false;
|
|
return arch_flags;
|
|
}
|
|
|
|
boolean
|
|
tic30_aout_set_arch_mach (abfd, arch, machine)
|
|
bfd *abfd;
|
|
enum bfd_architecture arch;
|
|
unsigned long machine;
|
|
{
|
|
if (!bfd_default_set_arch_mach (abfd, arch, machine))
|
|
return false;
|
|
if (arch != bfd_arch_unknown)
|
|
{
|
|
boolean unknown;
|
|
tic30_aout_machine_type (arch, machine, &unknown);
|
|
if (unknown)
|
|
return false;
|
|
}
|
|
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
|
|
return (*aout_backend_info (abfd)->set_sizes) (abfd);
|
|
}
|
|
|
|
/* We assume BFD generic archive files. */
|
|
#ifndef MY_openr_next_archived_file
|
|
#define MY_openr_next_archived_file bfd_generic_openr_next_archived_file
|
|
#endif
|
|
#ifndef MY_get_elt_at_index
|
|
#define MY_get_elt_at_index _bfd_generic_get_elt_at_index
|
|
#endif
|
|
#ifndef MY_generic_stat_arch_elt
|
|
#define MY_generic_stat_arch_elt bfd_generic_stat_arch_elt
|
|
#endif
|
|
#ifndef MY_slurp_armap
|
|
#define MY_slurp_armap bfd_slurp_bsd_armap
|
|
#endif
|
|
#ifndef MY_slurp_extended_name_table
|
|
#define MY_slurp_extended_name_table _bfd_slurp_extended_name_table
|
|
#endif
|
|
#ifndef MY_construct_extended_name_table
|
|
#define MY_construct_extended_name_table \
|
|
_bfd_archive_bsd_construct_extended_name_table
|
|
#endif
|
|
#ifndef MY_write_armap
|
|
#define MY_write_armap bsd_write_armap
|
|
#endif
|
|
#ifndef MY_read_ar_hdr
|
|
#define MY_read_ar_hdr _bfd_generic_read_ar_hdr
|
|
#endif
|
|
#ifndef MY_truncate_arname
|
|
#define MY_truncate_arname bfd_bsd_truncate_arname
|
|
#endif
|
|
#ifndef MY_update_armap_timestamp
|
|
#define MY_update_armap_timestamp _bfd_archive_bsd_update_armap_timestamp
|
|
#endif
|
|
|
|
/* No core file defined here -- configure in trad-core.c separately. */
|
|
#ifndef MY_core_file_failing_command
|
|
#define MY_core_file_failing_command _bfd_nocore_core_file_failing_command
|
|
#endif
|
|
#ifndef MY_core_file_failing_signal
|
|
#define MY_core_file_failing_signal _bfd_nocore_core_file_failing_signal
|
|
#endif
|
|
#ifndef MY_core_file_matches_executable_p
|
|
#define MY_core_file_matches_executable_p \
|
|
_bfd_nocore_core_file_matches_executable_p
|
|
#endif
|
|
#ifndef MY_core_file_p
|
|
#define MY_core_file_p _bfd_dummy_target
|
|
#endif
|
|
|
|
#ifndef MY_bfd_debug_info_start
|
|
#define MY_bfd_debug_info_start bfd_void
|
|
#endif
|
|
#ifndef MY_bfd_debug_info_end
|
|
#define MY_bfd_debug_info_end bfd_void
|
|
#endif
|
|
#ifndef MY_bfd_debug_info_accumulate
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#define MY_bfd_debug_info_accumulate \
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(void (*) PARAMS ((bfd*, struct sec *))) bfd_void
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#endif
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#ifndef MY_core_file_failing_command
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#define MY_core_file_failing_command NAME(aout,core_file_failing_command)
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#endif
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#ifndef MY_core_file_failing_signal
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#define MY_core_file_failing_signal NAME(aout,core_file_failing_signal)
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#endif
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#ifndef MY_core_file_matches_executable_p
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#define MY_core_file_matches_executable_p NAME(aout,core_file_matches_executable_p)
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#endif
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#ifndef MY_set_section_contents
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#define MY_set_section_contents NAME(aout,set_section_contents)
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#endif
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#ifndef MY_get_section_contents
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#define MY_get_section_contents aout_32_get_section_contents
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#endif
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#ifndef MY_get_section_contents_in_window
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#define MY_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
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#endif
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#ifndef MY_new_section_hook
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#define MY_new_section_hook NAME(aout,new_section_hook)
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#endif
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#ifndef MY_get_symtab_upper_bound
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#define MY_get_symtab_upper_bound NAME(aout,get_symtab_upper_bound)
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#endif
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#ifndef MY_get_symtab
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#define MY_get_symtab NAME(aout,get_symtab)
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#endif
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#ifndef MY_get_reloc_upper_bound
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#define MY_get_reloc_upper_bound NAME(aout,get_reloc_upper_bound)
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#endif
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#ifndef MY_canonicalize_reloc
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#define MY_canonicalize_reloc NAME(aout,canonicalize_reloc)
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#endif
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#ifndef MY_make_empty_symbol
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#define MY_make_empty_symbol NAME(aout,make_empty_symbol)
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#endif
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#ifndef MY_print_symbol
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#define MY_print_symbol NAME(aout,print_symbol)
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#endif
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#ifndef MY_get_symbol_info
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#define MY_get_symbol_info NAME(aout,get_symbol_info)
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#endif
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#ifndef MY_get_lineno
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#define MY_get_lineno NAME(aout,get_lineno)
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#endif
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#ifndef MY_set_arch_mach
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#define MY_set_arch_mach tic30_aout_set_arch_mach
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#endif
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#ifndef MY_find_nearest_line
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#define MY_find_nearest_line NAME(aout,find_nearest_line)
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#endif
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#ifndef MY_sizeof_headers
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#define MY_sizeof_headers NAME(aout,sizeof_headers)
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#endif
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#ifndef MY_bfd_get_relocated_section_contents
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#define MY_bfd_get_relocated_section_contents \
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bfd_generic_get_relocated_section_contents
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#endif
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#ifndef MY_bfd_relax_section
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#define MY_bfd_relax_section bfd_generic_relax_section
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#endif
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#ifndef MY_bfd_gc_sections
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#define MY_bfd_gc_sections bfd_generic_gc_sections
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#endif
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#ifndef MY_bfd_merge_sections
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#define MY_bfd_merge_sections bfd_generic_merge_sections
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#endif
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#ifndef MY_bfd_reloc_type_lookup
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#define MY_bfd_reloc_type_lookup tic30_aout_reloc_type_lookup
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#endif
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#ifndef MY_bfd_make_debug_symbol
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#define MY_bfd_make_debug_symbol 0
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#endif
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#ifndef MY_read_minisymbols
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#define MY_read_minisymbols NAME(aout,read_minisymbols)
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#endif
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#ifndef MY_minisymbol_to_symbol
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#define MY_minisymbol_to_symbol NAME(aout,minisymbol_to_symbol)
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#endif
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#ifndef MY_bfd_link_hash_table_create
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#define MY_bfd_link_hash_table_create NAME(aout,link_hash_table_create)
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#endif
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#ifndef MY_bfd_link_add_symbols
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#define MY_bfd_link_add_symbols NAME(aout,link_add_symbols)
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#endif
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#ifndef MY_bfd_link_split_section
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#define MY_bfd_link_split_section _bfd_generic_link_split_section
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#endif
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#ifndef MY_bfd_copy_private_bfd_data
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#define MY_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
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#endif
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#ifndef MY_bfd_merge_private_bfd_data
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#define MY_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
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#endif
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#ifndef MY_bfd_copy_private_symbol_data
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#define MY_bfd_copy_private_symbol_data _bfd_generic_bfd_copy_private_symbol_data
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#endif
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#ifndef MY_bfd_print_private_bfd_data
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#define MY_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data
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#endif
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#ifndef MY_bfd_set_private_flags
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#define MY_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
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#endif
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#ifndef MY_bfd_is_local_label_name
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#define MY_bfd_is_local_label_name bfd_generic_is_local_label_name
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#endif
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#ifndef MY_bfd_free_cached_info
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#define MY_bfd_free_cached_info NAME(aout,bfd_free_cached_info)
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#endif
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#ifndef MY_close_and_cleanup
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#define MY_close_and_cleanup MY_bfd_free_cached_info
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#endif
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#ifndef MY_get_dynamic_symtab_upper_bound
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#define MY_get_dynamic_symtab_upper_bound \
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_bfd_nodynamic_get_dynamic_symtab_upper_bound
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#endif
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#ifndef MY_canonicalize_dynamic_symtab
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#define MY_canonicalize_dynamic_symtab \
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_bfd_nodynamic_canonicalize_dynamic_symtab
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#endif
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#ifndef MY_get_dynamic_reloc_upper_bound
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#define MY_get_dynamic_reloc_upper_bound \
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_bfd_nodynamic_get_dynamic_reloc_upper_bound
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#endif
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#ifndef MY_canonicalize_dynamic_reloc
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#define MY_canonicalize_dynamic_reloc \
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_bfd_nodynamic_canonicalize_dynamic_reloc
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#endif
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/* Aout symbols normally have leading underscores */
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#ifndef MY_symbol_leading_char
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#define MY_symbol_leading_char '_'
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#endif
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/* Aout archives normally use spaces for padding */
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#ifndef AR_PAD_CHAR
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#define AR_PAD_CHAR ' '
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#endif
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#ifndef MY_BFD_TARGET
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const bfd_target tic30_aout_vec =
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{
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TARGETNAME, /* name */
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bfd_target_aout_flavour,
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BFD_ENDIAN_BIG, /* target byte order (big) */
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BFD_ENDIAN_BIG, /* target headers byte order (big) */
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(HAS_RELOC | /* object flags */
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HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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MY_symbol_leading_char,
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AR_PAD_CHAR, /* ar_pad_char */
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15, /* ar_max_namelen */
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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_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, /* hdrs */
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{_bfd_dummy_target, MY_object_p, /* bfd_check_format */
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bfd_generic_archive_p, MY_core_file_p},
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{bfd_false, MY_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, MY_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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BFD_JUMP_TABLE_GENERIC (MY),
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BFD_JUMP_TABLE_COPY (MY),
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BFD_JUMP_TABLE_CORE (MY),
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BFD_JUMP_TABLE_ARCHIVE (MY),
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BFD_JUMP_TABLE_SYMBOLS (MY),
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BFD_JUMP_TABLE_RELOCS (MY),
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BFD_JUMP_TABLE_WRITE (MY),
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BFD_JUMP_TABLE_LINK (MY),
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BFD_JUMP_TABLE_DYNAMIC (MY),
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NULL,
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(PTR) MY_backend_data
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};
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#endif /* MY_BFD_TARGET */
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