1 /* Motorola MCore specific support for 32-bit ELF
2 Copyright 1994, 1995, 1999 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 /* This file is based on a preliminary RCE ELF ABI. The
21 information may not match the final RCE ELF ABI. */
28 #include "elf/mcore.h"
31 #define USE_RELA /* Only USE_REL is actually significant, but this is
32 here are a reminder... */
34 static void mcore_elf_howto_init
36 static reloc_howto_type
* mcore_elf_reloc_type_lookup
37 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
38 static void mcore_elf_info_to_howto
39 PARAMS ((bfd
*, arelent
*, Elf32_Internal_Rela
*));
40 static boolean mcore_elf_set_private_flags
41 PARAMS ((bfd
*, flagword
));
42 static boolean mcore_elf_copy_private_bfd_data
43 PARAMS ((bfd
*, bfd
*));
44 static boolean mcore_elf_merge_private_bfd_data
45 PARAMS ((bfd
*, bfd
*));
46 static bfd_reloc_status_type mcore_elf_unsupported_reloc
47 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
48 static boolean mcore_elf_relocate_section
49 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
50 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
52 static reloc_howto_type
* mcore_elf_howto_table
[(int) R_MCORE_max
];
54 static reloc_howto_type mcore_elf_howto_raw
[] =
56 /* This reloc does nothing. */
57 HOWTO (R_MCORE_NONE
, /* type */
59 2, /* size (0 = byte, 1 = short, 2 = long) */
61 false, /* pc_relative */
63 complain_overflow_bitfield
, /* complain_on_overflow */
64 NULL
, /* special_function */
65 "R_MCORE_NONE", /* name */
66 false, /* partial_inplace */
69 false), /* pcrel_offset */
71 /* A standard 32 bit relocation. */
72 HOWTO (R_MCORE_ADDR32
, /* type */
74 2, /* size (0 = byte, 1 = short, 2 = long) */
76 false, /* pc_relative */
78 complain_overflow_bitfield
, /* complain_on_overflow */
79 bfd_elf_generic_reloc
, /* special_function */
80 "ADDR32", /* name *//* For compatability with coff/pe port. */
81 false, /* partial_inplace */
83 0xffffffff, /* dst_mask */
84 false), /* pcrel_offset */
86 /* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions.
87 Should not appear in object files. */
88 HOWTO (R_MCORE_PCRELIMM8BY4
, /* type */
90 1, /* size (0 = byte, 1 = short, 2 = long) */
92 true, /* pc_relative */
94 complain_overflow_bitfield
, /* complain_on_overflow */
95 mcore_elf_unsupported_reloc
, /* special_function */
96 "R_MCORE_PCRELIMM8BY4",/* name */
97 false, /* partial_inplace */
100 true), /* pcrel_offset */
102 /* bsr/bt/bf/br instructions; 11 bits + 1 zero bit
103 Span 2k instructions == 4k bytes.
104 Only useful pieces at the relocated address are the opcode (5 bits) */
105 HOWTO (R_MCORE_PCRELIMM11BY2
,/* type */
107 1, /* size (0 = byte, 1 = short, 2 = long) */
109 true, /* pc_relative */
111 complain_overflow_signed
, /* complain_on_overflow */
112 bfd_elf_generic_reloc
, /* special_function */
113 "R_MCORE_PCRELIMM11BY2",/* name */
114 false, /* partial_inplace */
116 0x7ff, /* dst_mask */
117 true), /* pcrel_offset */
119 /* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */
120 HOWTO (R_MCORE_PCRELIMM4BY2
, /* type */
122 1, /* size (0 = byte, 1 = short, 2 = long) */
124 true, /* pc_relative */
126 complain_overflow_bitfield
, /* complain_on_overflow */
127 mcore_elf_unsupported_reloc
,/* special_function */
128 "R_MCORE_PCRELIMM4BY2",/* name */
129 false, /* partial_inplace */
132 true), /* pcrel_offset */
134 /* 32-bit pc-relative. Eventually this will help support PIC code. */
135 HOWTO (R_MCORE_PCREL32
, /* type */
137 2, /* size (0 = byte, 1 = short, 2 = long) */
139 true, /* pc_relative */
141 complain_overflow_bitfield
, /* complain_on_overflow */
142 bfd_elf_generic_reloc
, /* special_function */
143 "R_MCORE_PCREL32", /* name */
144 false, /* partial_inplace */
146 0xffffffff, /* dst_mask */
147 true), /* pcrel_offset */
149 /* Like PCRELIMM11BY2, this relocation indicates that there is a
150 'jsri' at the specified address. There is a separate relocation
151 entry for the literal pool entry that it references, but we
152 might be able to change the jsri to a bsr if the target turns out
153 to be close enough [even though we won't reclaim the literal pool
154 entry, we'll get some runtime efficiency back]. Note that this
155 is a relocation that we are allowed to safely ignore. */
156 HOWTO (R_MCORE_PCRELJSR_IMM11BY2
,/* type */
158 1, /* size (0 = byte, 1 = short, 2 = long) */
160 true, /* pc_relative */
162 complain_overflow_signed
, /* complain_on_overflow */
163 bfd_elf_generic_reloc
, /* special_function */
164 "R_MCORE_PCRELJSR_IMM11BY2", /* name */
165 false, /* partial_inplace */
167 0x7ff, /* dst_mask */
168 true), /* pcrel_offset */
170 /* GNU extension to record C++ vtable hierarchy */
171 HOWTO (R_MCORE_GNU_VTINHERIT
, /* type */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
175 false, /* pc_relative */
177 complain_overflow_dont
, /* complain_on_overflow */
178 NULL
, /* special_function */
179 "R_MCORE_GNU_VTINHERIT", /* name */
180 false, /* partial_inplace */
183 false), /* pcrel_offset */
185 /* GNU extension to record C++ vtable member usage */
186 HOWTO (R_MCORE_GNU_VTENTRY
, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 false, /* pc_relative */
192 complain_overflow_dont
,/* complain_on_overflow */
193 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
194 "R_MCORE_GNU_VTENTRY", /* name */
195 false, /* partial_inplace */
198 false), /* pcrel_offset */
200 HOWTO (R_MCORE_RELATIVE
, /* type */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
204 false, /* pc_relative */
206 complain_overflow_signed
, /* complain_on_overflow */
207 NULL
, /* special_function */
208 "R_MCORE_RELATIVE", /* name */
209 true, /* partial_inplace */
210 0xffffffff, /* src_mask */
211 0xffffffff, /* dst_mask */
212 false) /* pcrel_offset */
216 #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
219 /* Initialize the mcore_elf_howto_table, so that linear accesses can be done. */
221 mcore_elf_howto_init ()
225 for (i
= NUM_ELEM (mcore_elf_howto_raw
); i
--;)
229 type
= mcore_elf_howto_raw
[i
].type
;
231 BFD_ASSERT (type
< NUM_ELEM (mcore_elf_howto_table
));
233 mcore_elf_howto_table
[type
] = & mcore_elf_howto_raw
[i
];
238 static reloc_howto_type
*
239 mcore_elf_reloc_type_lookup (abfd
, code
)
241 bfd_reloc_code_real_type code
;
243 enum elf_mcore_reloc_type mcore_reloc
= R_MCORE_NONE
;
247 case BFD_RELOC_NONE
: mcore_reloc
= R_MCORE_NONE
; break;
248 case BFD_RELOC_32
: mcore_reloc
= R_MCORE_ADDR32
; break;
249 case BFD_RELOC_MCORE_PCREL_IMM8BY4
: mcore_reloc
= R_MCORE_PCRELIMM8BY4
; break;
250 case BFD_RELOC_MCORE_PCREL_IMM11BY2
: mcore_reloc
= R_MCORE_PCRELIMM11BY2
; break;
251 case BFD_RELOC_MCORE_PCREL_IMM4BY2
: mcore_reloc
= R_MCORE_PCRELIMM4BY2
; break;
252 case BFD_RELOC_32_PCREL
: mcore_reloc
= R_MCORE_PCREL32
; break;
253 case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
: mcore_reloc
= R_MCORE_PCRELJSR_IMM11BY2
; break;
254 case BFD_RELOC_VTABLE_INHERIT
: mcore_reloc
= R_MCORE_GNU_VTINHERIT
; break;
255 case BFD_RELOC_VTABLE_ENTRY
: mcore_reloc
= R_MCORE_GNU_VTENTRY
; break;
256 case BFD_RELOC_RVA
: mcore_reloc
= R_MCORE_RELATIVE
; break;
258 return (reloc_howto_type
*)NULL
;
261 if (! mcore_elf_howto_table
[R_MCORE_PCRELIMM8BY4
]) /* Initialize howto table if needed */
262 mcore_elf_howto_init ();
264 return mcore_elf_howto_table
[(int) mcore_reloc
];
267 /* Set the howto pointer for a RCE ELF reloc. */
269 mcore_elf_info_to_howto (abfd
, cache_ptr
, dst
)
272 Elf32_Internal_Rela
* dst
;
274 if (! mcore_elf_howto_table
[R_MCORE_PCRELIMM8BY4
]) /* Initialize howto table if needed */
275 mcore_elf_howto_init ();
277 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_MCORE_max
);
279 cache_ptr
->howto
= mcore_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
282 /* Function to set whether a module needs the -mrelocatable bit set. */
284 mcore_elf_set_private_flags (abfd
, flags
)
288 BFD_ASSERT (! elf_flags_init (abfd
)
289 || elf_elfheader (abfd
)->e_flags
== flags
);
291 elf_elfheader (abfd
)->e_flags
= flags
;
292 elf_flags_init (abfd
) = true;
296 /* Copy backend specific data from one object module to another. */
298 mcore_elf_copy_private_bfd_data (ibfd
, obfd
)
302 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
303 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
306 BFD_ASSERT (! elf_flags_init (obfd
)
307 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
309 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
310 elf_flags_init (obfd
) = true;
314 /* Merge backend specific data from an object file to the output
315 object file when linking. */
317 mcore_elf_merge_private_bfd_data (ibfd
, obfd
)
325 /* Check if we have the same endianess */
326 if ( ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
327 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
329 (*_bfd_error_handler
)
330 (_("%s: compiled for a %s endian system and target is %s endian.\n"),
331 bfd_get_filename (ibfd
),
332 bfd_big_endian (ibfd
) ? "big" : "little",
333 bfd_big_endian (obfd
) ? "big" : "little");
335 bfd_set_error (bfd_error_wrong_format
);
339 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
340 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
343 new_flags
= elf_elfheader (ibfd
)->e_flags
;
344 old_flags
= elf_elfheader (obfd
)->e_flags
;
346 if (! elf_flags_init (obfd
)) /* First call, no flags set */
348 elf_flags_init (obfd
) = true;
349 elf_elfheader (obfd
)->e_flags
= new_flags
;
351 else if (new_flags
== old_flags
) /* Compatible flags are ok */
358 /* Don't pretend we can deal with unsupported relocs. */
361 static bfd_reloc_status_type
362 mcore_elf_unsupported_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
363 output_bfd
, error_message
)
365 arelent
* reloc_entry
;
368 asection
* input_section
;
370 char ** error_message
;
372 BFD_ASSERT (reloc_entry
->howto
!= (reloc_howto_type
*)0);
374 _bfd_error_handler (_("%s: Relocation %s (%d) is not currently supported.\n"),
375 bfd_get_filename (abfd
),
376 reloc_entry
->howto
->name
,
377 reloc_entry
->howto
->type
);
379 return bfd_reloc_notsupported
;
383 /* The RELOCATE_SECTION function is called by the ELF backend linker
384 to handle the relocations for a section.
386 The relocs are always passed as Rela structures; if the section
387 actually uses Rel structures, the r_addend field will always be
390 This function is responsible for adjust the section contents as
391 necessary, and (if using Rela relocs and generating a
392 relocateable output file) adjusting the reloc addend as
395 This function does not have to worry about setting the reloc
396 address or the reloc symbol index.
398 LOCAL_SYMS is a pointer to the swapped in local symbols.
400 LOCAL_SECTIONS is an array giving the section in the input file
401 corresponding to the st_shndx field of each local symbol.
403 The global hash table entry for the global symbols can be found
404 via elf_sym_hashes (input_bfd).
406 When generating relocateable output, this function must handle
407 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
408 going to be the section symbol corresponding to the output
409 section, which means that the addend must be adjusted
413 mcore_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
414 contents
, relocs
, local_syms
, local_sections
)
416 struct bfd_link_info
* info
;
418 asection
* input_section
;
420 Elf_Internal_Rela
* relocs
;
421 Elf_Internal_Sym
* local_syms
;
422 asection
** local_sections
;
424 Elf_Internal_Shdr
* symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
425 struct elf_link_hash_entry
** sym_hashes
= elf_sym_hashes (input_bfd
);
426 Elf_Internal_Rela
* rel
= relocs
;
427 Elf_Internal_Rela
* relend
= relocs
+ input_section
->reloc_count
;
433 "mcore_elf_relocate_section called for %s section %s, %ld relocations%s\n",
434 bfd_get_filename (input_bfd
),
435 bfd_section_name(input_bfd
, input_section
),
436 (long) input_section
->reloc_count
,
437 (info
->relocateable
) ? " (relocatable)" : "");
440 if (! mcore_elf_howto_table
[R_MCORE_PCRELIMM8BY4
]) /* Initialize howto table if needed */
441 mcore_elf_howto_init ();
443 for (; rel
< relend
; rel
++)
445 enum elf_mcore_reloc_type r_type
= (enum elf_mcore_reloc_type
) ELF32_R_TYPE (rel
->r_info
);
446 bfd_vma offset
= rel
->r_offset
;
447 bfd_vma addend
= rel
->r_addend
;
448 bfd_reloc_status_type r
= bfd_reloc_other
;
449 asection
* sec
= (asection
*) 0;
450 reloc_howto_type
* howto
;
452 Elf_Internal_Sym
* sym
= (Elf_Internal_Sym
*) 0;
453 unsigned long r_symndx
;
454 struct elf_link_hash_entry
* h
= (struct elf_link_hash_entry
*) 0;
455 unsigned short oldinst
;
457 /* Unknown relocation handling */
458 if ((unsigned) r_type
>= (unsigned) R_MCORE_max
459 || ! mcore_elf_howto_table
[(int)r_type
])
461 _bfd_error_handler (_("%s: Unknown relocation type %d\n"),
462 bfd_get_filename (input_bfd
),
465 bfd_set_error (bfd_error_bad_value
);
470 howto
= mcore_elf_howto_table
[(int) r_type
];
471 r_symndx
= ELF32_R_SYM (rel
->r_info
);
473 if (info
->relocateable
)
475 /* This is a relocateable link. We don't have to change
476 anything, unless the reloc is against a section symbol,
477 in which case we have to adjust according to where the
478 section symbol winds up in the output section. */
479 if (r_symndx
< symtab_hdr
->sh_info
)
481 sym
= local_syms
+ r_symndx
;
483 if ((unsigned)ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
485 sec
= local_sections
[r_symndx
];
486 addend
= rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
491 fprintf (stderr
, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
492 howto
->name
, (int) r_type
, r_symndx
, (long) offset
, (long) addend
);
497 /* This is a final link. */
499 /* Complain about known relocation that are not yet supported */
500 if (howto
->special_function
== mcore_elf_unsupported_reloc
)
502 _bfd_error_handler (_("%s: Relocation %s (%d) is not currently supported.\n"),
503 bfd_get_filename (input_bfd
),
507 bfd_set_error (bfd_error_bad_value
);
512 if (r_symndx
< symtab_hdr
->sh_info
)
514 sym
= local_syms
+ r_symndx
;
515 sec
= local_sections
[r_symndx
];
516 relocation
= (sec
->output_section
->vma
522 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
523 if ( h
->root
.type
== bfd_link_hash_defined
524 || h
->root
.type
== bfd_link_hash_defweak
)
526 sec
= h
->root
.u
.def
.section
;
527 relocation
= (h
->root
.u
.def
.value
528 + sec
->output_section
->vma
529 + sec
->output_offset
);
531 else if (h
->root
.type
== bfd_link_hash_undefweak
)
533 else if (info
->shared
)
537 if (! ((*info
->callbacks
->undefined_symbol
)
538 (info
, h
->root
.root
.string
, input_bfd
,
539 input_section
, rel
->r_offset
)))
552 case R_MCORE_PCRELJSR_IMM11BY2
:
553 oldinst
= bfd_get_16 (input_bfd
, contents
+ offset
);
554 #define MCORE_INST_BSR 0xF800
555 bfd_put_16 (input_bfd
, MCORE_INST_BSR
, contents
+ offset
);
561 fprintf (stderr
, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
562 howto
->name
, r_type
, r_symndx
, (long) offset
, (long) addend
);
565 r
= _bfd_final_link_relocate
566 (howto
, input_bfd
, input_section
, contents
, offset
, relocation
, addend
);
568 if (r
!= bfd_reloc_ok
&& r_type
== R_MCORE_PCRELJSR_IMM11BY2
)
570 /* Wasn't ok, back it out and give up. */
571 bfd_put_16 (input_bfd
, oldinst
, contents
+ offset
);
575 if (r
!= bfd_reloc_ok
)
584 case bfd_reloc_overflow
:
589 name
= h
->root
.root
.string
;
592 name
= bfd_elf_string_from_elf_section
593 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
599 name
= bfd_section_name (input_bfd
, sec
);
602 (*info
->callbacks
->reloc_overflow
)
603 (info
, name
, howto
->name
, (bfd_vma
) 0, input_bfd
, input_section
,
612 fprintf (stderr
, "\n");
618 /* Return the section that should be marked against GC for a given
622 mcore_elf_gc_mark_hook (abfd
, info
, rel
, h
, sym
)
624 struct bfd_link_info
* info
;
625 Elf_Internal_Rela
* rel
;
626 struct elf_link_hash_entry
* h
;
627 Elf_Internal_Sym
* sym
;
631 switch (ELF32_R_TYPE (rel
->r_info
))
633 case R_MCORE_GNU_VTINHERIT
:
634 case R_MCORE_GNU_VTENTRY
:
638 switch (h
->root
.type
)
640 case bfd_link_hash_defined
:
641 case bfd_link_hash_defweak
:
642 return h
->root
.u
.def
.section
;
644 case bfd_link_hash_common
:
645 return h
->root
.u
.c
.p
->section
;
651 if (!(elf_bad_symtab (abfd
)
652 && ELF_ST_BIND (sym
->st_info
) != STB_LOCAL
)
653 && ! ((sym
->st_shndx
<= 0 || sym
->st_shndx
>= SHN_LORESERVE
)
654 && sym
->st_shndx
!= SHN_COMMON
))
656 return bfd_section_from_elf_index (abfd
, sym
->st_shndx
);
663 /* Update the got entry reference counts for the section being removed. */
666 mcore_elf_gc_sweep_hook (abfd
, info
, sec
, relocs
)
668 struct bfd_link_info
* info
;
670 const Elf_Internal_Rela
* relocs
;
675 /* Look through the relocs for a section during the first phase.
676 Since we don't do .gots or .plts, we just need to consider the
677 virtual table relocs for gc. */
680 mcore_elf_check_relocs (abfd
, info
, sec
, relocs
)
682 struct bfd_link_info
* info
;
684 const Elf_Internal_Rela
* relocs
;
686 Elf_Internal_Shdr
* symtab_hdr
;
687 struct elf_link_hash_entry
** sym_hashes
;
688 struct elf_link_hash_entry
** sym_hashes_end
;
689 const Elf_Internal_Rela
* rel
;
690 const Elf_Internal_Rela
* rel_end
;
692 if (info
->relocateable
)
695 symtab_hdr
= & elf_tdata (abfd
)->symtab_hdr
;
696 sym_hashes
= elf_sym_hashes (abfd
);
697 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
698 if (!elf_bad_symtab (abfd
))
699 sym_hashes_end
-= symtab_hdr
->sh_info
;
701 rel_end
= relocs
+ sec
->reloc_count
;
703 for (rel
= relocs
; rel
< rel_end
; rel
++)
705 struct elf_link_hash_entry
* h
;
706 unsigned long r_symndx
;
708 r_symndx
= ELF32_R_SYM (rel
->r_info
);
710 if (r_symndx
< symtab_hdr
->sh_info
)
713 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
715 switch (ELF32_R_TYPE (rel
->r_info
))
717 /* This relocation describes the C++ object vtable hierarchy.
718 Reconstruct it for later use during GC. */
719 case R_MCORE_GNU_VTINHERIT
:
720 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
724 /* This relocation describes which C++ vtable entries are actually
725 used. Record for later use during GC. */
726 case R_MCORE_GNU_VTENTRY
:
727 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
736 #define TARGET_BIG_SYM bfd_elf32_mcore_big_vec
737 #define TARGET_BIG_NAME "elf32-mcore-big"
738 #define TARGET_LITTLE_SYM bfd_elf32_mcore_little_vec
739 #define TARGET_LITTLE_NAME "elf32-mcore-little"
741 #define ELF_ARCH bfd_arch_mcore
742 #define ELF_MACHINE_CODE EM_MCORE
743 #define ELF_MAXPAGESIZE 0x1000 /* 4k, if we ever have 'em */
744 #define elf_info_to_howto mcore_elf_info_to_howto
745 #define elf_info_to_howto_rel NULL
748 #define bfd_elf32_bfd_copy_private_bfd_data mcore_elf_copy_private_bfd_data
749 #define bfd_elf32_bfd_merge_private_bfd_data mcore_elf_merge_private_bfd_data
750 #define bfd_elf32_bfd_set_private_flags mcore_elf_set_private_flags
751 #define bfd_elf32_bfd_reloc_type_lookup mcore_elf_reloc_type_lookup
752 #define elf_backend_relocate_section mcore_elf_relocate_section
753 #define elf_backend_gc_mark_hook mcore_elf_gc_mark_hook
754 #define elf_backend_gc_sweep_hook mcore_elf_gc_sweep_hook
755 #define elf_backend_check_relocs mcore_elf_check_relocs
757 #define elf_backend_can_gc_sections 1
759 #include "elf32-target.h"