1 /* Intel i386 Mach-O support for BFD.
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
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.
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
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "libiberty.h"
28 #define bfd_mach_o_object_p bfd_mach_o_i386_object_p
29 #define bfd_mach_o_core_p bfd_mach_o_i386_core_p
30 #define bfd_mach_o_mkobject bfd_mach_o_i386_mkobject
32 static const bfd_target *
33 bfd_mach_o_i386_object_p (bfd *abfd)
35 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_I386);
38 static const bfd_target *
39 bfd_mach_o_i386_core_p (bfd *abfd)
41 return bfd_mach_o_header_p (abfd,
42 BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
46 bfd_mach_o_i386_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;
55 mdata->header.cputype = BFD_MACH_O_CPU_TYPE_I386;
56 mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_ALL;
57 mdata->header.byteorder = BFD_ENDIAN_LITTLE;
58 mdata->header.version = 1;
63 static reloc_howto_type i386_howto_table[]=
65 HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
66 complain_overflow_bitfield,
68 FALSE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0,
70 complain_overflow_bitfield,
72 FALSE, 0xffff, 0xffff, FALSE),
73 HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0,
74 complain_overflow_bitfield,
76 FALSE, 0xff, 0xff, FALSE),
77 HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
78 complain_overflow_bitfield,
80 FALSE, 0xffffffff, 0xffffffff, TRUE),
81 HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
82 complain_overflow_bitfield,
84 FALSE, 0xffff, 0xffff, TRUE),
85 HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0,
86 complain_overflow_bitfield,
88 FALSE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
90 complain_overflow_bitfield,
92 FALSE, 0xffffffff, 0xffffffff, FALSE),
96 bfd_mach_o_i386_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
98 if (reloc->r_scattered)
100 switch (reloc->r_type)
102 case BFD_MACH_O_GENERIC_RELOC_PAIR:
103 if (reloc->r_length != 2)
105 res->howto = &i386_howto_table[3];
106 res->address = res[-1].address;
108 case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
109 case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
110 if (reloc->r_length != 2)
112 res->howto = &i386_howto_table[2];
120 switch (reloc->r_type)
122 case BFD_MACH_O_GENERIC_RELOC_VANILLA:
123 switch ((reloc->r_length << 1) | reloc->r_pcrel)
125 case 0: /* len = 0, pcrel = 0 */
126 res->howto = &i386_howto_table[2];
128 case 2: /* len = 1, pcrel = 0 */
129 res->howto = &i386_howto_table[1];
131 case 3: /* len = 1, pcrel = 1 */
132 res->howto = &i386_howto_table[4];
134 case 4: /* len = 2, pcrel = 0 */
135 res->howto = &i386_howto_table[0];
137 case 5: /* len = 2, pcrel = 1 */
138 res->howto = &i386_howto_table[3];
151 bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
153 rinfo->r_address = rel->address;
154 switch (rel->howto->type)
157 case BFD_RELOC_32_PCREL:
159 case BFD_RELOC_16_PCREL:
161 rinfo->r_scattered = 0;
162 rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_VANILLA;
163 rinfo->r_pcrel = rel->howto->pc_relative;
164 rinfo->r_length = rel->howto->size; /* Correct in practice. */
165 if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
168 rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
173 rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
176 case BFD_RELOC_MACH_O_SECTDIFF:
177 rinfo->r_scattered = 1;
178 rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_SECTDIFF;
182 rinfo->r_value = (*rel->sym_ptr_ptr)->value
183 + (*rel->sym_ptr_ptr)->section->vma;
185 case BFD_RELOC_MACH_O_PAIR:
186 rinfo->r_address = 0;
187 rinfo->r_scattered = 1;
188 rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_PAIR;
192 rinfo->r_value = (*rel->sym_ptr_ptr)->value
193 + (*rel->sym_ptr_ptr)->section->vma;
201 static reloc_howto_type *
202 bfd_mach_o_i386_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
203 bfd_reloc_code_real_type code)
207 for (i = 0; i < sizeof (i386_howto_table) / sizeof (*i386_howto_table); i++)
208 if (code == i386_howto_table[i].type)
209 return &i386_howto_table[i];
213 static reloc_howto_type *
214 bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
215 const char *name ATTRIBUTE_UNUSED)
220 #define bfd_mach_o_swap_reloc_in bfd_mach_o_i386_swap_reloc_in
221 #define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out
223 #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup
224 #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup
226 #define TARGET_NAME mach_o_i386_vec
227 #define TARGET_STRING "mach-o-i386"
228 #define TARGET_BIG_ENDIAN 0
229 #define TARGET_ARCHIVE 0
230 #include "mach-o-target.c"