Don't add IMAGE_FILE_RELOCS_STRIPPED for PIE.
[binutils.git] / bfd / mach-o-i386.c
blobe46cbc6f57ed45929a990e515e4276fc1dff24ff
1 /* Intel i386 Mach-O support for BFD.
2 Copyright 2009
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. */
22 #include "sysdep.h"
23 #include "mach-o.h"
24 #include "bfd.h"
25 #include "libbfd.h"
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);
45 static bfd_boolean
46 bfd_mach_o_i386_mkobject (bfd *abfd)
48 bfd_mach_o_data_struct *mdata;
50 if (!bfd_mach_o_mkobject_init (abfd))
51 return FALSE;
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;
60 return TRUE;
63 static reloc_howto_type i386_howto_table[]=
65 HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
66 complain_overflow_bitfield,
67 NULL, "32",
68 FALSE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0,
70 complain_overflow_bitfield,
71 NULL, "16",
72 FALSE, 0xffff, 0xffff, FALSE),
73 HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0,
74 complain_overflow_bitfield,
75 NULL, "8",
76 FALSE, 0xff, 0xff, FALSE),
77 HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
78 complain_overflow_bitfield,
79 NULL, "DISP32",
80 FALSE, 0xffffffff, 0xffffffff, TRUE),
81 HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
82 complain_overflow_bitfield,
83 NULL, "DISP16",
84 FALSE, 0xffff, 0xffff, TRUE),
85 HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0,
86 complain_overflow_bitfield,
87 NULL, "SECTDIFF_32",
88 FALSE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
90 complain_overflow_bitfield,
91 NULL, "PAIR_32",
92 FALSE, 0xffffffff, 0xffffffff, FALSE),
95 static bfd_boolean
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)
104 return FALSE;
105 res->howto = &i386_howto_table[6];
106 res->address = res[-1].address;
107 return TRUE;
108 case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
109 case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
110 if (reloc->r_length != 2)
111 return FALSE;
112 res->howto = &i386_howto_table[5];
113 return TRUE;
114 default:
115 return FALSE;
118 else
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];
127 return TRUE;
128 case 2: /* len = 1, pcrel = 0 */
129 res->howto = &i386_howto_table[1];
130 return TRUE;
131 case 3: /* len = 1, pcrel = 1 */
132 res->howto = &i386_howto_table[4];
133 return TRUE;
134 case 4: /* len = 2, pcrel = 0 */
135 res->howto = &i386_howto_table[0];
136 return TRUE;
137 case 5: /* len = 2, pcrel = 1 */
138 res->howto = &i386_howto_table[3];
139 return TRUE;
140 default:
141 return FALSE;
143 break;
144 default:
145 return FALSE;
150 static bfd_boolean
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)
156 case BFD_RELOC_32:
157 case BFD_RELOC_32_PCREL:
158 case BFD_RELOC_16:
159 case BFD_RELOC_16_PCREL:
160 case BFD_RELOC_8:
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)
167 rinfo->r_extern = 0;
168 rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
170 else
172 rinfo->r_extern = 1;
173 rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
175 break;
176 case BFD_RELOC_MACH_O_SECTDIFF:
177 rinfo->r_scattered = 1;
178 rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_SECTDIFF;
179 rinfo->r_pcrel = 0;
180 rinfo->r_length = 2;
181 rinfo->r_extern = 0;
182 rinfo->r_value = (*rel->sym_ptr_ptr)->value
183 + (*rel->sym_ptr_ptr)->section->vma;
184 break;
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;
189 rinfo->r_pcrel = 0;
190 rinfo->r_length = 2;
191 rinfo->r_extern = 0;
192 rinfo->r_value = (*rel->sym_ptr_ptr)->value
193 + (*rel->sym_ptr_ptr)->section->vma;
194 break;
195 default:
196 return FALSE;
198 return TRUE;
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)
205 unsigned int i;
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];
210 return NULL;
213 static reloc_howto_type *
214 bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
215 const char *name ATTRIBUTE_UNUSED)
217 return NULL;
220 static bfd_boolean
221 bfd_mach_o_i386_print_thread (bfd *abfd, bfd_mach_o_thread_flavour *thread,
222 void *vfile, char *buf)
224 FILE *file = (FILE *)vfile;
226 switch (thread->flavour)
228 case BFD_MACH_O_x86_THREAD_STATE:
229 if (thread->size < (8 + 16 * 4))
230 return FALSE;
231 fprintf (file, " x86_THREAD_STATE:\n");
232 fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
233 (unsigned long)bfd_get_32 (abfd, buf + 0),
234 (unsigned long)bfd_get_32 (abfd, buf + 4));
235 fprintf (file, " eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
236 (unsigned long)bfd_get_32 (abfd, buf + 8),
237 (unsigned long)bfd_get_32 (abfd, buf + 12),
238 (unsigned long)bfd_get_32 (abfd, buf + 16),
239 (unsigned long)bfd_get_32 (abfd, buf + 20));
240 fprintf (file, " edi: %08lx esi: %08lx ebp: %08lx esp: %08lx\n",
241 (unsigned long)bfd_get_32 (abfd, buf + 24),
242 (unsigned long)bfd_get_32 (abfd, buf + 28),
243 (unsigned long)bfd_get_32 (abfd, buf + 32),
244 (unsigned long)bfd_get_32 (abfd, buf + 36));
245 fprintf (file, " ss: %08lx flg: %08lx eip: %08lx cs: %08lx\n",
246 (unsigned long)bfd_get_32 (abfd, buf + 40),
247 (unsigned long)bfd_get_32 (abfd, buf + 44),
248 (unsigned long)bfd_get_32 (abfd, buf + 48),
249 (unsigned long)bfd_get_32 (abfd, buf + 52));
250 fprintf (file, " ds: %08lx es: %08lx fs: %08lx gs: %08lx\n",
251 (unsigned long)bfd_get_32 (abfd, buf + 56),
252 (unsigned long)bfd_get_32 (abfd, buf + 60),
253 (unsigned long)bfd_get_32 (abfd, buf + 64),
254 (unsigned long)bfd_get_32 (abfd, buf + 68));
255 return TRUE;
256 case BFD_MACH_O_x86_FLOAT_STATE:
257 if (thread->size < 8)
258 return FALSE;
259 fprintf (file, " x86_FLOAT_STATE:\n");
260 fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
261 (unsigned long)bfd_get_32 (abfd, buf + 0),
262 (unsigned long)bfd_get_32 (abfd, buf + 4));
263 return TRUE;
264 case BFD_MACH_O_x86_EXCEPTION_STATE:
265 if (thread->size < 8 + 3 * 4)
266 return FALSE;
267 fprintf (file, " x86_EXCEPTION_STATE:\n");
268 fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
269 (unsigned long)bfd_get_32 (abfd, buf + 0),
270 (unsigned long)bfd_get_32 (abfd, buf + 4));
271 fprintf (file, " trapno: %08lx err: %08lx faultaddr: %08lx\n",
272 (unsigned long)bfd_get_32 (abfd, buf + 8),
273 (unsigned long)bfd_get_32 (abfd, buf + 12),
274 (unsigned long)bfd_get_32 (abfd, buf + 16));
275 return TRUE;
276 default:
277 break;
279 return FALSE;
282 #define bfd_mach_o_swap_reloc_in bfd_mach_o_i386_swap_reloc_in
283 #define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out
284 #define bfd_mach_o_print_thread bfd_mach_o_i386_print_thread
286 #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup
287 #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup
289 #define TARGET_NAME mach_o_i386_vec
290 #define TARGET_STRING "mach-o-i386"
291 #define TARGET_ARCHITECTURE bfd_arch_i386
292 #define TARGET_BIG_ENDIAN 0
293 #define TARGET_ARCHIVE 0
294 #include "mach-o-target.c"