Properly check undefined symbols when gc_sections is active.
[deliverable/binutils-gdb.git] / bfd / mach-o-target.c
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3af9a47b 1/* Mach-O support for BFD.
aa820537 2 Copyright 1999, 2000, 2001, 2002, 2005, 2007, 2008, 2009
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3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
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10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
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19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
3af9a47b 21
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22/* Define generic entry points here so that we don't need to duplicate the
23 defines in every target. But define once as this file may be included
24 several times. */
25#ifndef MACH_O_TARGET_COMMON_DEFINED
26#define MACH_O_TARGET_COMMON_DEFINED
27
28#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
29#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
30#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
31#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
32#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
33#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
34#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
35#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
36#define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt
37#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
38#define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup
39#define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
40#define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook
41#define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
154a1ee5 42#define bfd_mach_o_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
92bc0e80 43#define bfd_mach_o_bfd_is_local_label_name bfd_generic_is_local_label_name
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44#define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno
45#define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line
46#define bfd_mach_o_find_inliner_info _bfd_nosymbols_find_inliner_info
47#define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
48#define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols
49#define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
50#define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
51#define bfd_mach_o_bfd_relax_section bfd_generic_relax_section
52#define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
53#define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
54#define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols
55#define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms
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56#define bfd_mach_o_bfd_copy_link_hash_symbol_type \
57 _bfd_generic_copy_link_hash_symbol_type
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58#define bfd_mach_o_bfd_final_link _bfd_generic_final_link
59#define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section
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60#define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
61#define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
62#define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents
63#define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections
64#define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections
65#define bfd_mach_o_bfd_is_group_section bfd_generic_is_group_section
66#define bfd_mach_o_bfd_discard_group bfd_generic_discard_group
67#define bfd_mach_o_section_already_linked _bfd_generic_section_already_linked
68#define bfd_mach_o_bfd_define_common_symbol bfd_generic_define_common_symbol
69#define bfd_mach_o_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
70#define bfd_mach_o_core_file_matches_executable_p generic_core_file_matches_executable_p
71
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72#define bfd_mach_o_get_dynamic_symtab_upper_bound bfd_mach_o_get_symtab_upper_bound
73#define bfd_mach_o_canonicalize_dynamic_symtab bfd_mach_o_canonicalize_symtab
b32e07d7 74
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75#define TARGET_NAME_BACKEND XCONCAT2(TARGET_NAME,_backend)
76
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77#endif /* MACH_O_TARGET_COMMON_DEFINED */
78
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79#ifndef TARGET_NAME
80#error TARGET_NAME must be defined
81#endif /* TARGET_NAME */
82
83#ifndef TARGET_STRING
84#error TARGET_STRING must be defined
85#endif /* TARGET_STRING */
86
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87#ifndef TARGET_ARCHITECTURE
88#error TARGET_ARCHITECTURE must be defined
89#endif /* TARGET_ARCHITECTURE */
90
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91#ifndef TARGET_BIG_ENDIAN
92#error TARGET_BIG_ENDIAN must be defined
93#endif /* TARGET_BIG_ENDIAN */
94
95#ifndef TARGET_ARCHIVE
96#error TARGET_ARCHIVE must be defined
97#endif /* TARGET_ARCHIVE */
98
99#if ((TARGET_ARCHIVE) && (! TARGET_BIG_ENDIAN))
100#error Mach-O fat files must always be big-endian.
101#endif /* ((TARGET_ARCHIVE) && (! TARGET_BIG_ENDIAN)) */
102
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103static const bfd_mach_o_backend_data TARGET_NAME_BACKEND =
104{
42fa0891 105 TARGET_ARCHITECTURE,
92bc0e80 106 bfd_mach_o_swap_reloc_in,
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107 bfd_mach_o_swap_reloc_out,
108 bfd_mach_o_print_thread
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109};
110
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111const bfd_target TARGET_NAME =
112{
113 TARGET_STRING, /* Name. */
114 bfd_target_mach_o_flavour,
115#if TARGET_BIG_ENDIAN
116 BFD_ENDIAN_BIG, /* Target byte order. */
117 BFD_ENDIAN_BIG, /* Target headers byte order. */
118#else
119 BFD_ENDIAN_LITTLE, /* Target byte order. */
120 BFD_ENDIAN_LITTLE, /* Target headers byte order. */
121#endif
122 (HAS_RELOC | EXEC_P | /* Object flags. */
123 HAS_LINENO | HAS_DEBUG |
124 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
125 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
126 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
127 '_', /* symbol_leading_char. */
128 ' ', /* ar_pad_char. */
129 16, /* ar_max_namelen. */
130
131#if TARGET_BIG_ENDIAN
132 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
133 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
134 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
135 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
136 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
137 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Hdrs. */
138#else
139 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
140 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
141 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
142 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
143 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
144 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
145#endif /* TARGET_BIG_ENDIAN */
146
147 { /* bfd_check_format. */
148#if TARGET_ARCHIVE
149 _bfd_dummy_target,
150 _bfd_dummy_target,
151 bfd_mach_o_archive_p,
152 _bfd_dummy_target,
153#else
154 _bfd_dummy_target,
155 bfd_mach_o_object_p,
15e1c58a 156 bfd_generic_archive_p,
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157 bfd_mach_o_core_p
158#endif
159 },
160 { /* bfd_set_format. */
161 bfd_false,
162 bfd_mach_o_mkobject,
15e1c58a 163 _bfd_generic_mkarchive,
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164 bfd_mach_o_mkobject,
165 },
166 { /* bfd_write_contents. */
167 bfd_false,
168 bfd_mach_o_write_contents,
15e1c58a 169 _bfd_write_archive_contents,
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170 bfd_mach_o_write_contents,
171 },
172
173 BFD_JUMP_TABLE_GENERIC (bfd_mach_o),
174 BFD_JUMP_TABLE_COPY (bfd_mach_o),
175 BFD_JUMP_TABLE_CORE (bfd_mach_o),
15e1c58a 176#if TARGET_ARCHIVE
3af9a47b 177 BFD_JUMP_TABLE_ARCHIVE (bfd_mach_o),
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178#else
179 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
180#endif
3af9a47b 181 BFD_JUMP_TABLE_SYMBOLS (bfd_mach_o),
92bc0e80 182 BFD_JUMP_TABLE_RELOCS (bfd_mach_o),
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183 BFD_JUMP_TABLE_WRITE (bfd_mach_o),
184 BFD_JUMP_TABLE_LINK (bfd_mach_o),
b32e07d7 185 BFD_JUMP_TABLE_DYNAMIC (bfd_mach_o),
3af9a47b 186
92bc0e80 187 /* Alternative endian target. */
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188 NULL,
189
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190 /* Back-end data. */
191 &TARGET_NAME_BACKEND
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192};
193
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