Commit | Line | Data |
---|---|---|
95c5070c CM |
1 | /* 32-bit ELF support for ARM old abi option. |
2 | Copyright 1999 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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. */ | |
19 | ||
20 | #include "elf/arm-oabi.h" | |
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | ||
26 | #define USE_RELA | |
27 | ||
28 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_oabi_vec | |
29 | #define TARGET_LITTLE_NAME "elf32-littlearm-oabi" | |
30 | #define TARGET_BIG_SYM bfd_elf32_bigarm_oabi_vec | |
31 | #define TARGET_BIG_NAME "elf32-bigarm-oabi" | |
32 | #define elf_info_to_howto elf32_arm_info_to_howto | |
33 | #define elf_info_to_howto_rel 0 | |
34 | ||
35 | static reloc_howto_type elf32_arm_howto_table[] = | |
36 | { | |
37 | /* No relocation */ | |
38 | HOWTO (R_ARM_NONE, /* type */ | |
39 | 0, /* rightshift */ | |
40 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
41 | 0, /* bitsize */ | |
42 | false, /* pc_relative */ | |
43 | 0, /* bitpos */ | |
44 | complain_overflow_dont, /* complain_on_overflow */ | |
45 | bfd_elf_generic_reloc, /* special_function */ | |
46 | "R_ARM_NONE", /* name */ | |
47 | false, /* partial_inplace */ | |
48 | 0, /* src_mask */ | |
49 | 0, /* dst_mask */ | |
50 | false), /* pcrel_offset */ | |
51 | ||
52 | HOWTO (R_ARM_PC24, /* type */ | |
53 | 2, /* rightshift */ | |
54 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
55 | 24, /* bitsize */ | |
56 | true, /* pc_relative */ | |
57 | 0, /* bitpos */ | |
58 | complain_overflow_signed, /* complain_on_overflow */ | |
59 | bfd_elf_generic_reloc, /* special_function */ | |
60 | "R_ARM_PC24", /* name */ | |
61 | false, /* partial_inplace */ | |
62 | 0x00ffffff, /* src_mask */ | |
63 | 0x00ffffff, /* dst_mask */ | |
64 | true), /* pcrel_offset */ | |
65 | ||
66 | /* 32 bit absolute */ | |
67 | HOWTO (R_ARM_ABS32, /* type */ | |
68 | 0, /* rightshift */ | |
69 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
70 | 32, /* bitsize */ | |
71 | false, /* pc_relative */ | |
72 | 0, /* bitpos */ | |
73 | complain_overflow_bitfield, /* complain_on_overflow */ | |
74 | bfd_elf_generic_reloc, /* special_function */ | |
75 | "R_ARM_ABS32", /* name */ | |
76 | false, /* partial_inplace */ | |
77 | 0xffffffff, /* src_mask */ | |
78 | 0xffffffff, /* dst_mask */ | |
79 | false), /* pcrel_offset */ | |
80 | ||
81 | /* standard 32bit pc-relative reloc */ | |
82 | HOWTO (R_ARM_REL32, /* type */ | |
83 | 0, /* rightshift */ | |
84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
85 | 32, /* bitsize */ | |
86 | true, /* pc_relative */ | |
87 | 0, /* bitpos */ | |
88 | complain_overflow_bitfield, /* complain_on_overflow */ | |
89 | bfd_elf_generic_reloc, /* special_function */ | |
90 | "R_ARM_REL32", /* name */ | |
91 | false, /* partial_inplace */ | |
92 | 0xffffffff, /* src_mask */ | |
93 | 0xffffffff, /* dst_mask */ | |
94 | true), /* pcrel_offset */ | |
95 | ||
96 | /* 8 bit absolute */ | |
97 | HOWTO (R_ARM_ABS8, /* type */ | |
98 | 0, /* rightshift */ | |
99 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
100 | 8, /* bitsize */ | |
101 | false, /* pc_relative */ | |
102 | 0, /* bitpos */ | |
103 | complain_overflow_bitfield, /* complain_on_overflow */ | |
104 | bfd_elf_generic_reloc, /* special_function */ | |
105 | "R_ARM_ABS8", /* name */ | |
106 | false, /* partial_inplace */ | |
107 | 0x000000ff, /* src_mask */ | |
108 | 0x000000ff, /* dst_mask */ | |
109 | false), /* pcrel_offset */ | |
110 | ||
111 | /* 16 bit absolute */ | |
112 | HOWTO (R_ARM_ABS16, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 16, /* bitsize */ | |
116 | false, /* pc_relative */ | |
117 | 0, /* bitpos */ | |
118 | complain_overflow_bitfield, /* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_ARM_ABS16", /* name */ | |
121 | false, /* partial_inplace */ | |
122 | 0, /* src_mask */ | |
123 | 0, /* dst_mask */ | |
124 | false), /* pcrel_offset */ | |
125 | ||
126 | /* 12 bit absolute */ | |
127 | HOWTO (R_ARM_ABS12, /* type */ | |
128 | 0, /* rightshift */ | |
129 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 12, /* bitsize */ | |
131 | false, /* pc_relative */ | |
132 | 0, /* bitpos */ | |
133 | complain_overflow_bitfield, /* complain_on_overflow */ | |
134 | bfd_elf_generic_reloc, /* special_function */ | |
135 | "R_ARM_ABS12", /* name */ | |
136 | false, /* partial_inplace */ | |
137 | 0x000008ff, /* src_mask */ | |
138 | 0x000008ff, /* dst_mask */ | |
139 | false), /* pcrel_offset */ | |
140 | ||
141 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
142 | 0, /* rightshift */ | |
143 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
144 | 5, /* bitsize */ | |
145 | false, /* pc_relative */ | |
146 | 0, /* bitpos */ | |
147 | complain_overflow_bitfield, /* complain_on_overflow */ | |
148 | bfd_elf_generic_reloc, /* special_function */ | |
149 | "R_ARM_THM_ABS5", /* name */ | |
150 | false, /* partial_inplace */ | |
151 | 0x000007e0, /* src_mask */ | |
152 | 0x000007e0, /* dst_mask */ | |
153 | false), /* pcrel_offset */ | |
154 | ||
155 | HOWTO (R_ARM_THM_PC22, /* type */ | |
156 | 1, /* rightshift */ | |
157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
158 | 22, /* bitsize */ | |
159 | true, /* pc_relative */ | |
160 | 0, /* bitpos */ | |
161 | complain_overflow_signed, /* complain_on_overflow */ | |
162 | bfd_elf_generic_reloc, /* special_function */ | |
163 | "R_ARM_THM_PC22", /* name */ | |
164 | false, /* partial_inplace */ | |
165 | 0x07ff07ff, /* src_mask */ | |
166 | 0x07ff07ff, /* dst_mask */ | |
167 | true), /* pcrel_offset */ | |
168 | ||
169 | HOWTO (R_ARM_SBREL32, /* type */ | |
170 | 0, /* rightshift */ | |
171 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
172 | 0, /* bitsize */ | |
173 | false, /* pc_relative */ | |
174 | 0, /* bitpos */ | |
175 | complain_overflow_dont, /* complain_on_overflow */ | |
176 | bfd_elf_generic_reloc, /* special_function */ | |
177 | "R_ARM_SBREL32", /* name */ | |
178 | false, /* partial_inplace */ | |
179 | 0, /* src_mask */ | |
180 | 0, /* dst_mask */ | |
181 | false), /* pcrel_offset */ | |
182 | ||
183 | HOWTO (R_ARM_AMP_VCALL9, /* type */ | |
184 | 1, /* rightshift */ | |
185 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
186 | 8, /* bitsize */ | |
187 | true, /* pc_relative */ | |
188 | 0, /* bitpos */ | |
189 | complain_overflow_signed, /* complain_on_overflow */ | |
190 | bfd_elf_generic_reloc, /* special_function */ | |
191 | "R_ARM_AMP_VCALL9", /* name */ | |
192 | false, /* partial_inplace */ | |
193 | 0x000000ff, /* src_mask */ | |
194 | 0x000000ff, /* dst_mask */ | |
195 | true), /* pcrel_offset */ | |
196 | ||
197 | /* 12 bit pc relative */ | |
198 | HOWTO (R_ARM_THM_PC11, /* type */ | |
199 | 1, /* rightshift */ | |
200 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
201 | 11, /* bitsize */ | |
202 | true, /* pc_relative */ | |
203 | 0, /* bitpos */ | |
204 | complain_overflow_signed, /* complain_on_overflow */ | |
205 | bfd_elf_generic_reloc, /* special_function */ | |
206 | "R_ARM_THM_PC11", /* name */ | |
207 | false, /* partial_inplace */ | |
208 | 0x000007ff, /* src_mask */ | |
209 | 0x000007ff, /* dst_mask */ | |
210 | true), /* pcrel_offset */ | |
211 | ||
212 | /* 12 bit pc relative */ | |
213 | HOWTO (R_ARM_THM_PC9, /* type */ | |
214 | 1, /* rightshift */ | |
215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
216 | 8, /* bitsize */ | |
217 | true, /* pc_relative */ | |
218 | 0, /* bitpos */ | |
219 | complain_overflow_signed, /* complain_on_overflow */ | |
220 | bfd_elf_generic_reloc, /* special_function */ | |
221 | "R_ARM_THM_PC9", /* name */ | |
222 | false, /* partial_inplace */ | |
223 | 0x000000ff, /* src_mask */ | |
224 | 0x000000ff, /* dst_mask */ | |
225 | true), /* pcrel_offset */ | |
226 | ||
227 | /* GNU extension to record C++ vtable hierarchy */ | |
228 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
229 | 0, /* rightshift */ | |
230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 0, /* bitsize */ | |
232 | false, /* pc_relative */ | |
233 | 0, /* bitpos */ | |
234 | complain_overflow_dont, /* complain_on_overflow */ | |
235 | NULL, /* special_function */ | |
236 | "R_ARM_GNU_VTINHERIT", /* name */ | |
237 | false, /* partial_inplace */ | |
238 | 0, /* src_mask */ | |
239 | 0, /* dst_mask */ | |
240 | false), /* pcrel_offset */ | |
241 | ||
242 | /* GNU extension to record C++ vtable member usage */ | |
243 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 0, /* bitsize */ | |
247 | false, /* pc_relative */ | |
248 | 0, /* bitpos */ | |
249 | complain_overflow_dont, /* complain_on_overflow */ | |
250 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
251 | "R_ARM_GNU_VTENTRY", /* name */ | |
252 | false, /* partial_inplace */ | |
253 | 0, /* src_mask */ | |
254 | 0, /* dst_mask */ | |
255 | false), /* pcrel_offset */ | |
256 | ||
257 | ||
258 | HOWTO (R_ARM_RREL32, /* type */ | |
259 | 0, /* rightshift */ | |
260 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 0, /* bitsize */ | |
262 | false, /* pc_relative */ | |
263 | 0, /* bitpos */ | |
264 | complain_overflow_dont, /* complain_on_overflow */ | |
265 | bfd_elf_generic_reloc, /* special_function */ | |
266 | "R_ARM_RREL32", /* name */ | |
267 | false, /* partial_inplace */ | |
268 | 0, /* src_mask */ | |
269 | 0, /* dst_mask */ | |
270 | false), /* pcrel_offset */ | |
271 | ||
272 | HOWTO (R_ARM_RABS32, /* type */ | |
273 | 0, /* rightshift */ | |
274 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 0, /* bitsize */ | |
276 | false, /* pc_relative */ | |
277 | 0, /* bitpos */ | |
278 | complain_overflow_dont, /* complain_on_overflow */ | |
279 | bfd_elf_generic_reloc, /* special_function */ | |
280 | "R_ARM_RABS32", /* name */ | |
281 | false, /* partial_inplace */ | |
282 | 0, /* src_mask */ | |
283 | 0, /* dst_mask */ | |
284 | false), /* pcrel_offset */ | |
285 | ||
286 | HOWTO (R_ARM_RPC24, /* type */ | |
287 | 0, /* rightshift */ | |
288 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
289 | 0, /* bitsize */ | |
290 | false, /* pc_relative */ | |
291 | 0, /* bitpos */ | |
292 | complain_overflow_dont, /* complain_on_overflow */ | |
293 | bfd_elf_generic_reloc, /* special_function */ | |
294 | "R_ARM_RPC24", /* name */ | |
295 | false, /* partial_inplace */ | |
296 | 0, /* src_mask */ | |
297 | 0, /* dst_mask */ | |
298 | false), /* pcrel_offset */ | |
299 | ||
300 | HOWTO (R_ARM_RBASE, /* type */ | |
301 | 0, /* rightshift */ | |
302 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
303 | 0, /* bitsize */ | |
304 | false, /* pc_relative */ | |
305 | 0, /* bitpos */ | |
306 | complain_overflow_dont, /* complain_on_overflow */ | |
307 | bfd_elf_generic_reloc, /* special_function */ | |
308 | "R_ARM_RBASE", /* name */ | |
309 | false, /* partial_inplace */ | |
310 | 0, /* src_mask */ | |
311 | 0, /* dst_mask */ | |
312 | false), /* pcrel_offset */ | |
313 | ||
314 | }; | |
315 | ||
316 | static void | |
317 | elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc) | |
318 | bfd *abfd; | |
319 | arelent *bfd_reloc; | |
320 | Elf32_Internal_Rela *elf_reloc; | |
321 | { | |
322 | unsigned int r_type; | |
323 | ||
324 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
325 | /* fixme: need range test */ | |
326 | /* BFD_ASSERT (r_type < (unsigned int) R_ELF32_ARM_MAX); */ | |
327 | bfd_reloc->howto = &elf32_arm_howto_table[r_type]; | |
328 | } | |
5ce0edb7 CM |
329 | |
330 | struct elf32_arm_reloc_map | |
331 | { | |
332 | unsigned char bfd_reloc_val; | |
333 | unsigned char elf_reloc_val; | |
334 | }; | |
335 | ||
336 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
337 | { | |
338 | {BFD_RELOC_NONE, R_ARM_NONE,}, | |
339 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24,}, | |
340 | {BFD_RELOC_32, R_ARM_ABS32,}, | |
341 | {BFD_RELOC_32_PCREL, R_ARM_REL32,}, | |
342 | {BFD_RELOC_8, R_ARM_ABS8,}, | |
343 | {BFD_RELOC_16, R_ARM_ABS16,}, | |
344 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12,}, | |
345 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5,}, | |
346 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22,}, | |
347 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT }, | |
348 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY }, | |
349 | {BFD_RELOC_NONE, R_ARM_SBREL32,}, | |
350 | {BFD_RELOC_NONE, R_ARM_AMP_VCALL9,}, | |
351 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11,}, | |
352 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9,} | |
353 | }; | |
354 | ||
355 | static reloc_howto_type * | |
356 | elf32_arm_reloc_type_lookup (abfd, code) | |
357 | bfd *abfd; | |
358 | bfd_reloc_code_real_type code; | |
359 | { | |
360 | unsigned int i; | |
361 | ||
362 | for (i = 0; | |
363 | i < sizeof (elf32_arm_reloc_map) / sizeof (struct elf32_arm_reloc_map); | |
364 | i++) | |
365 | { | |
366 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
367 | return &elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; | |
368 | } | |
369 | ||
370 | return NULL; | |
371 | } | |
95c5070c | 372 | #include "elf32-arm.h" |