1 /* Intel x86-64 Mach-O support for BFD.
2 Copyright (C) 2010-2014 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
25 #include "libiberty.h"
26 #include "mach-o/x86-64.h"
28 #define bfd_mach_o_object_p bfd_mach_o_x86_64_object_p
29 #define bfd_mach_o_core_p bfd_mach_o_x86_64_core_p
30 #define bfd_mach_o_mkobject bfd_mach_o_x86_64_mkobject
32 static const bfd_target *
33 bfd_mach_o_x86_64_object_p (bfd *abfd)
35 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_X86_64);
38 static const bfd_target *
39 bfd_mach_o_x86_64_core_p (bfd *abfd)
41 return bfd_mach_o_header_p (abfd,
42 BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_X86_64);
46 bfd_mach_o_x86_64_mkobject (bfd *abfd)
48 bfd_mach_o_data_struct *mdata;
50 if (!bfd_mach_o_mkobject_init (abfd))
53 mdata = bfd_mach_o_get_data (abfd);
54 mdata->header.magic = BFD_MACH_O_MH_MAGIC_64;
55 mdata->header.cputype = BFD_MACH_O_CPU_TYPE_X86_64;
56 mdata->header.cpusubtype =
57 BFD_MACH_O_CPU_SUBTYPE_X86_ALL | BFD_MACH_O_CPU_SUBTYPE_LIB64;
58 mdata->header.byteorder = BFD_ENDIAN_LITTLE;
59 mdata->header.version = 2;
64 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
65 #define MINUS_ONE (~ (bfd_vma) 0)
67 static reloc_howto_type x86_64_howto_table[]=
70 HOWTO(BFD_RELOC_64, 0, 4, 64, FALSE, 0,
71 complain_overflow_bitfield,
73 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
74 HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
75 complain_overflow_bitfield,
77 FALSE, 0xffffffff, 0xffffffff, FALSE),
78 HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
79 complain_overflow_bitfield,
81 FALSE, 0xffffffff, 0xffffffff, TRUE),
82 HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_1, 0, 2, 32, TRUE, 0,
83 complain_overflow_bitfield,
85 FALSE, 0xffffffff, 0xffffffff, TRUE),
87 HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_2, 0, 2, 32, TRUE, 0,
88 complain_overflow_bitfield,
90 FALSE, 0xffffffff, 0xffffffff, TRUE),
91 HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_4, 0, 2, 32, TRUE, 0,
92 complain_overflow_bitfield,
94 FALSE, 0xffffffff, 0xffffffff, TRUE),
95 HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH32, 0, 2, 32, TRUE, 0,
96 complain_overflow_bitfield,
98 FALSE, 0xffffffff, 0xffffffff, TRUE),
99 HOWTO(BFD_RELOC_MACH_O_X86_64_GOT_LOAD, 0, 2, 32, TRUE, 0,
100 complain_overflow_bitfield,
102 FALSE, 0xffffffff, 0xffffffff, TRUE),
104 HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
105 complain_overflow_bitfield,
106 NULL, "SUBTRACTOR32",
107 FALSE, 0xffffffff, 0xffffffff, FALSE),
108 HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
109 complain_overflow_bitfield,
110 NULL, "SUBTRACTOR64",
111 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
112 HOWTO(BFD_RELOC_MACH_O_X86_64_GOT, 0, 2, 32, TRUE, 0,
113 complain_overflow_bitfield,
115 FALSE, 0xffffffff, 0xffffffff, TRUE),
116 HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH8, 0, 0, 8, TRUE, 0,
117 complain_overflow_bitfield,
119 FALSE, 0xff, 0xff, TRUE),
123 bfd_mach_o_x86_64_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
125 /* On x86-64, scattered relocs are not used. */
126 if (reloc->r_scattered)
129 switch (reloc->r_type)
131 case BFD_MACH_O_X86_64_RELOC_UNSIGNED:
134 switch (reloc->r_length)
137 res->howto = &x86_64_howto_table[1];
140 res->howto = &x86_64_howto_table[0];
145 case BFD_MACH_O_X86_64_RELOC_SIGNED:
146 if (reloc->r_length == 2 && reloc->r_pcrel)
148 res->howto = &x86_64_howto_table[2];
152 case BFD_MACH_O_X86_64_RELOC_BRANCH:
155 switch (reloc->r_length)
158 res->howto = &x86_64_howto_table[6];
164 case BFD_MACH_O_X86_64_RELOC_GOT_LOAD:
165 if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
167 res->howto = &x86_64_howto_table[7];
171 case BFD_MACH_O_X86_64_RELOC_GOT:
172 if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
174 res->howto = &x86_64_howto_table[10];
178 case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR:
181 switch (reloc->r_length)
184 res->howto = &x86_64_howto_table[8];
187 res->howto = &x86_64_howto_table[9];
193 case BFD_MACH_O_X86_64_RELOC_SIGNED_1:
194 if (reloc->r_length == 2 && reloc->r_pcrel)
196 res->howto = &x86_64_howto_table[3];
200 case BFD_MACH_O_X86_64_RELOC_SIGNED_2:
201 if (reloc->r_length == 2 && reloc->r_pcrel)
203 res->howto = &x86_64_howto_table[4];
207 case BFD_MACH_O_X86_64_RELOC_SIGNED_4:
208 if (reloc->r_length == 2 && reloc->r_pcrel)
210 res->howto = &x86_64_howto_table[5];
221 bfd_mach_o_x86_64_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
223 rinfo->r_address = rel->address;
224 rinfo->r_scattered = 0;
225 switch (rel->howto->type)
228 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED;
233 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED;
237 case BFD_RELOC_32_PCREL:
238 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED;
242 case BFD_RELOC_MACH_O_X86_64_PCREL32_1:
243 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_1;
247 case BFD_RELOC_MACH_O_X86_64_PCREL32_2:
248 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_2;
252 case BFD_RELOC_MACH_O_X86_64_PCREL32_4:
253 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_4;
257 case BFD_RELOC_MACH_O_X86_64_BRANCH32:
258 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_BRANCH;
262 case BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32:
263 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SUBTRACTOR;
267 case BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64:
268 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SUBTRACTOR;
272 case BFD_RELOC_MACH_O_X86_64_GOT:
273 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_GOT;
277 case BFD_RELOC_MACH_O_X86_64_GOT_LOAD:
278 rinfo->r_type = BFD_MACH_O_X86_64_RELOC_GOT_LOAD;
285 if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
289 (*rel->sym_ptr_ptr)->section->output_section->target_index;
294 rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
299 static reloc_howto_type *
300 bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
301 bfd_reloc_code_real_type code)
306 i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table);
308 if (code == x86_64_howto_table[i].type)
309 return &x86_64_howto_table[i];
313 static reloc_howto_type *
314 bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
315 const char *name ATTRIBUTE_UNUSED)
321 bfd_mach_o_section_type_valid_for_x86_64 (unsigned long val)
323 if (val == BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
324 || val == BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
325 || val == BFD_MACH_O_S_SYMBOL_STUBS)
330 /* We want to bump the alignment of some sections. */
331 static const mach_o_section_name_xlat text_section_names_xlat[] =
333 { ".eh_frame", "__eh_frame",
334 SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
335 BFD_MACH_O_S_ATTR_LIVE_SUPPORT
336 | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
337 | BFD_MACH_O_S_ATTR_NO_TOC, 3},
338 { NULL, NULL, 0, 0, 0, 0}
341 const mach_o_segment_name_xlat mach_o_x86_64_segsec_names_xlat[] =
343 { "__TEXT", text_section_names_xlat },
347 #define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in
348 #define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out
350 #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup
351 #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup
352 #define bfd_mach_o_print_thread NULL
353 #define bfd_mach_o_tgt_seg_table mach_o_x86_64_segsec_names_xlat
354 #define bfd_mach_o_section_type_valid_for_tgt bfd_mach_o_section_type_valid_for_x86_64
356 #define TARGET_NAME mach_o_x86_64_vec
357 #define TARGET_STRING "mach-o-x86-64"
358 #define TARGET_ARCHITECTURE bfd_arch_i386
359 #define TARGET_PAGESIZE 4096
360 #define TARGET_BIG_ENDIAN 0
361 #define TARGET_ARCHIVE 0
362 #define TARGET_PRIORITY 0
363 #include "mach-o-target.c"