1 /* 32-bit ELF support for ARM old abi option.
2 Copyright 1999 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #include "elf/arm-oabi.h"
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"
33 #define elf_info_to_howto elf32_arm_info_to_howto
34 #define elf_info_to_howto_rel 0
36 static reloc_howto_type elf32_arm_howto_table
[] =
39 HOWTO (R_ARM_NONE
, /* type */
41 0, /* size (0 = byte, 1 = short, 2 = long) */
43 false, /* pc_relative */
45 complain_overflow_dont
, /* complain_on_overflow */
46 bfd_elf_generic_reloc
, /* special_function */
47 "R_ARM_NONE", /* name */
48 false, /* partial_inplace */
51 false), /* pcrel_offset */
53 HOWTO (R_ARM_PC24
, /* type */
55 2, /* size (0 = byte, 1 = short, 2 = long) */
57 true, /* pc_relative */
59 complain_overflow_signed
, /* complain_on_overflow */
60 bfd_elf_generic_reloc
, /* special_function */
61 "R_ARM_PC24", /* name */
62 false, /* partial_inplace */
63 0x00ffffff, /* src_mask */
64 0x00ffffff, /* dst_mask */
65 true), /* pcrel_offset */
68 HOWTO (R_ARM_ABS32
, /* type */
70 2, /* size (0 = byte, 1 = short, 2 = long) */
72 false, /* pc_relative */
74 complain_overflow_bitfield
, /* complain_on_overflow */
75 bfd_elf_generic_reloc
, /* special_function */
76 "R_ARM_ABS32", /* name */
77 false, /* partial_inplace */
78 0xffffffff, /* src_mask */
79 0xffffffff, /* dst_mask */
80 false), /* pcrel_offset */
82 /* standard 32bit pc-relative reloc */
83 HOWTO (R_ARM_REL32
, /* type */
85 2, /* size (0 = byte, 1 = short, 2 = long) */
87 true, /* pc_relative */
89 complain_overflow_bitfield
, /* complain_on_overflow */
90 bfd_elf_generic_reloc
, /* special_function */
91 "R_ARM_REL32", /* name */
92 false, /* partial_inplace */
93 0xffffffff, /* src_mask */
94 0xffffffff, /* dst_mask */
95 true), /* pcrel_offset */
98 HOWTO (R_ARM_ABS8
, /* type */
100 0, /* size (0 = byte, 1 = short, 2 = long) */
102 false, /* pc_relative */
104 complain_overflow_bitfield
, /* complain_on_overflow */
105 bfd_elf_generic_reloc
, /* special_function */
106 "R_ARM_ABS8", /* name */
107 false, /* partial_inplace */
108 0x000000ff, /* src_mask */
109 0x000000ff, /* dst_mask */
110 false), /* pcrel_offset */
112 /* 16 bit absolute */
113 HOWTO (R_ARM_ABS16
, /* type */
115 1, /* size (0 = byte, 1 = short, 2 = long) */
117 false, /* pc_relative */
119 complain_overflow_bitfield
, /* complain_on_overflow */
120 bfd_elf_generic_reloc
, /* special_function */
121 "R_ARM_ABS16", /* name */
122 false, /* partial_inplace */
125 false), /* pcrel_offset */
127 /* 12 bit absolute */
128 HOWTO (R_ARM_ABS12
, /* type */
130 2, /* size (0 = byte, 1 = short, 2 = long) */
132 false, /* pc_relative */
134 complain_overflow_bitfield
, /* complain_on_overflow */
135 bfd_elf_generic_reloc
, /* special_function */
136 "R_ARM_ABS12", /* name */
137 false, /* partial_inplace */
138 0x000008ff, /* src_mask */
139 0x000008ff, /* dst_mask */
140 false), /* pcrel_offset */
142 HOWTO (R_ARM_THM_ABS5
, /* type */
144 1, /* size (0 = byte, 1 = short, 2 = long) */
146 false, /* pc_relative */
148 complain_overflow_bitfield
, /* complain_on_overflow */
149 bfd_elf_generic_reloc
, /* special_function */
150 "R_ARM_THM_ABS5", /* name */
151 false, /* partial_inplace */
152 0x000007e0, /* src_mask */
153 0x000007e0, /* dst_mask */
154 false), /* pcrel_offset */
156 HOWTO (R_ARM_THM_PC22
, /* type */
158 2, /* size (0 = byte, 1 = short, 2 = long) */
160 true, /* pc_relative */
162 complain_overflow_signed
, /* complain_on_overflow */
163 bfd_elf_generic_reloc
, /* special_function */
164 "R_ARM_THM_PC22", /* name */
165 false, /* partial_inplace */
166 0x07ff07ff, /* src_mask */
167 0x07ff07ff, /* dst_mask */
168 true), /* pcrel_offset */
170 HOWTO (R_ARM_SBREL32
, /* type */
172 0, /* size (0 = byte, 1 = short, 2 = long) */
174 false, /* pc_relative */
176 complain_overflow_dont
, /* complain_on_overflow */
177 bfd_elf_generic_reloc
, /* special_function */
178 "R_ARM_SBREL32", /* name */
179 false, /* partial_inplace */
182 false), /* pcrel_offset */
184 HOWTO (R_ARM_AMP_VCALL9
, /* type */
186 1, /* size (0 = byte, 1 = short, 2 = long) */
188 true, /* pc_relative */
190 complain_overflow_signed
, /* complain_on_overflow */
191 bfd_elf_generic_reloc
, /* special_function */
192 "R_ARM_AMP_VCALL9", /* name */
193 false, /* partial_inplace */
194 0x000000ff, /* src_mask */
195 0x000000ff, /* dst_mask */
196 true), /* pcrel_offset */
198 /* 12 bit pc relative */
199 HOWTO (R_ARM_THM_PC11
, /* type */
201 1, /* size (0 = byte, 1 = short, 2 = long) */
203 true, /* pc_relative */
205 complain_overflow_signed
, /* complain_on_overflow */
206 bfd_elf_generic_reloc
, /* special_function */
207 "R_ARM_THM_PC11", /* name */
208 false, /* partial_inplace */
209 0x000007ff, /* src_mask */
210 0x000007ff, /* dst_mask */
211 true), /* pcrel_offset */
213 /* 12 bit pc relative */
214 HOWTO (R_ARM_THM_PC9
, /* type */
216 1, /* size (0 = byte, 1 = short, 2 = long) */
218 true, /* pc_relative */
220 complain_overflow_signed
, /* complain_on_overflow */
221 bfd_elf_generic_reloc
, /* special_function */
222 "R_ARM_THM_PC9", /* name */
223 false, /* partial_inplace */
224 0x000000ff, /* src_mask */
225 0x000000ff, /* dst_mask */
226 true), /* pcrel_offset */
228 /* GNU extension to record C++ vtable hierarchy */
229 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
231 2, /* size (0 = byte, 1 = short, 2 = long) */
233 false, /* pc_relative */
235 complain_overflow_dont
, /* complain_on_overflow */
236 NULL
, /* special_function */
237 "R_ARM_GNU_VTINHERIT", /* name */
238 false, /* partial_inplace */
241 false), /* pcrel_offset */
243 /* GNU extension to record C++ vtable member usage */
244 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
248 false, /* pc_relative */
250 complain_overflow_dont
, /* complain_on_overflow */
251 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
252 "R_ARM_GNU_VTENTRY", /* name */
253 false, /* partial_inplace */
256 false), /* pcrel_offset */
259 HOWTO (R_ARM_RREL32
, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 false, /* pc_relative */
265 complain_overflow_dont
, /* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_ARM_RREL32", /* name */
268 false, /* partial_inplace */
271 false), /* pcrel_offset */
273 HOWTO (R_ARM_RABS32
, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 false, /* pc_relative */
279 complain_overflow_dont
, /* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_ARM_RABS32", /* name */
282 false, /* partial_inplace */
285 false), /* pcrel_offset */
287 HOWTO (R_ARM_RPC24
, /* type */
289 0, /* size (0 = byte, 1 = short, 2 = long) */
291 false, /* pc_relative */
293 complain_overflow_dont
, /* complain_on_overflow */
294 bfd_elf_generic_reloc
, /* special_function */
295 "R_ARM_RPC24", /* name */
296 false, /* partial_inplace */
299 false), /* pcrel_offset */
301 HOWTO (R_ARM_RBASE
, /* type */
303 0, /* size (0 = byte, 1 = short, 2 = long) */
305 false, /* pc_relative */
307 complain_overflow_dont
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_ARM_RBASE", /* name */
310 false, /* partial_inplace */
313 false), /* pcrel_offset */
318 elf32_arm_info_to_howto (abfd
, bfd_reloc
, elf_reloc
)
321 Elf32_Internal_Rela
*elf_reloc
;
325 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
326 /* fixme: need range test */
327 /* BFD_ASSERT (r_type < (unsigned int) R_ELF32_ARM_MAX); */
328 bfd_reloc
->howto
= &elf32_arm_howto_table
[r_type
];
331 struct elf32_arm_reloc_map
333 bfd_reloc_code_real_type bfd_reloc_val
;
334 unsigned char elf_reloc_val
;
337 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
339 {BFD_RELOC_NONE
, R_ARM_NONE
,},
340 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
,},
341 {BFD_RELOC_32
, R_ARM_ABS32
,},
342 {BFD_RELOC_32_PCREL
, R_ARM_REL32
,},
343 {BFD_RELOC_8
, R_ARM_ABS8
,},
344 {BFD_RELOC_16
, R_ARM_ABS16
,},
345 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
,},
346 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
,},
347 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_PC22
,},
348 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
349 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
350 {BFD_RELOC_NONE
, R_ARM_SBREL32
,},
351 {BFD_RELOC_NONE
, R_ARM_AMP_VCALL9
,},
352 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_PC11
,},
353 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_PC9
,}
356 static reloc_howto_type
*
357 elf32_arm_reloc_type_lookup (abfd
, code
)
359 bfd_reloc_code_real_type code
;
364 i
< sizeof (elf32_arm_reloc_map
) / sizeof (struct elf32_arm_reloc_map
);
367 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
368 return & elf32_arm_howto_table
[elf32_arm_reloc_map
[i
].elf_reloc_val
];
374 #define bfd_elf32_arm_allocate_interworking_sections \
375 bfd_elf32_arm_oabi_allocate_interworking_sections
376 #define bfd_elf32_arm_get_bfd_for_interworking \
377 bfd_elf32_arm_oabi_get_bfd_for_interworking
378 #define bfd_elf32_arm_process_before_allocation \
379 bfd_elf32_arm_oabi_process_before_allocation
381 #include "elf32-arm.h"