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e01b0e69 JR |
1 | /* Generic support for 32-bit ELF |
2 | Copyright 1993, 1995, 1998, 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 "bfd.h" | |
21 | #include "sysdep.h" | |
22 | #include "libbfd.h" | |
23 | #include "elf-bfd.h" | |
24 | #include "elf/h8.h" | |
25 | ||
26 | static reloc_howto_type *elf32_h8_reloc_type_lookup | |
27 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
28 | static void elf32_h8_info_to_howto | |
29 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
30 | ||
31 | /* This does not include any relocation information, but should be | |
32 | good enough for GDB or objdump to read the file. */ | |
33 | ||
34 | static reloc_howto_type h8_elf_howto_table[] = | |
35 | { | |
36 | #define R_H8_NONE_X 0 | |
37 | HOWTO (R_H8_NONE, /* type */ | |
38 | 0, /* rightshift */ | |
39 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
40 | 0, /* bitsize */ | |
41 | false, /* pc_relative */ | |
42 | 0, /* bitpos */ | |
43 | complain_overflow_dont, /* complain_on_overflow */ | |
44 | NULL, /* special_function */ | |
45 | "R_H8_NONE", /* name */ | |
46 | false, /* partial_inplace */ | |
47 | 0, /* src_mask */ | |
48 | 0, /* dst_mask */ | |
49 | false), /* pcrel_offset */ | |
50 | #define R_H8_DIR32_X (R_H8_NONE_X + 1) | |
51 | HOWTO (R_H8_DIR32, /* type */ | |
52 | 0, /* rightshift */ | |
53 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
54 | 32, /* bitsize */ | |
55 | false, /* pc_relative */ | |
56 | 0, /* bitpos */ | |
57 | complain_overflow_dont, /* complain_on_overflow */ | |
58 | NULL, /* special_function */ | |
59 | "R_H8_DIR32", /* name */ | |
60 | false, /* partial_inplace */ | |
61 | 0, /* src_mask */ | |
62 | 0xffffffff, /* dst_mask */ | |
63 | false), /* pcrel_offset */ | |
64 | #define R_H8_DIR16_X (R_H8_DIR32_X + 1) | |
65 | HOWTO (R_H8_DIR16, /* type */ | |
66 | 0, /* rightshift */ | |
67 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
68 | 16, /* bitsize */ | |
69 | false, /* pc_relative */ | |
70 | 0, /* bitpos */ | |
71 | complain_overflow_dont, /* complain_on_overflow */ | |
72 | NULL, /* special_function */ | |
73 | "R_H8_DIR16", /* name */ | |
74 | false, /* partial_inplace */ | |
75 | 0, /* src_mask */ | |
76 | 0x0000ffff, /* dst_mask */ | |
77 | false), /* pcrel_offset */ | |
78 | #define R_H8_DIR8_X (R_H8_DIR16_X + 1) | |
79 | HOWTO (R_H8_DIR8, /* type */ | |
80 | 0, /* rightshift */ | |
81 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
82 | 8, /* bitsize */ | |
83 | false, /* pc_relative */ | |
84 | 0, /* bitpos */ | |
85 | complain_overflow_dont, /* complain_on_overflow */ | |
86 | NULL, /* special_function */ | |
87 | "R_H8_DIR16", /* name */ | |
88 | false, /* partial_inplace */ | |
89 | 0, /* src_mask */ | |
90 | 0x000000ff, /* dst_mask */ | |
91 | false), /* pcrel_offset */ | |
92 | #define R_H8_DIR16A8_X (R_H8_DIR8_X + 1) | |
93 | HOWTO (R_H8_DIR16A8, /* type */ | |
94 | 0, /* rightshift */ | |
95 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
96 | 16, /* bitsize */ | |
97 | false, /* pc_relative */ | |
98 | 0, /* bitpos */ | |
99 | complain_overflow_bitfield, /* complain_on_overflow */ | |
100 | NULL, /* special_function */ | |
101 | "R_H8_DIR16A8", /* name */ | |
102 | false, /* partial_inplace */ | |
103 | 0, /* src_mask */ | |
104 | 0x0000ffff, /* dst_mask */ | |
105 | false), /* pcrel_offset */ | |
106 | #define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1) | |
107 | HOWTO (R_H8_DIR16R8, /* type */ | |
108 | 0, /* rightshift */ | |
109 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
110 | 16, /* bitsize */ | |
111 | false, /* pc_relative */ | |
112 | 0, /* bitpos */ | |
113 | complain_overflow_bitfield, /* complain_on_overflow */ | |
114 | NULL, /* special_function */ | |
115 | "R_H8_DIR16R8", /* name */ | |
116 | false, /* partial_inplace */ | |
117 | 0, /* src_mask */ | |
118 | 0x0000ffff, /* dst_mask */ | |
119 | false), /* pcrel_offset */ | |
120 | #define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1) | |
121 | HOWTO (R_H8_DIR24A8, /* type */ | |
122 | 0, /* rightshift */ | |
123 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
124 | 24, /* bitsize */ | |
125 | false, /* pc_relative */ | |
126 | 0, /* bitpos */ | |
127 | complain_overflow_bitfield, /* complain_on_overflow */ | |
128 | NULL, /* special_function */ | |
129 | "R_H8_DIR24A8", /* name */ | |
130 | true, /* partial_inplace */ | |
131 | 0xff000000, /* src_mask */ | |
132 | 0x00ffffff, /* dst_mask */ | |
133 | false), /* pcrel_offset */ | |
134 | #define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1) | |
135 | HOWTO (R_H8_DIR24R8, /* type */ | |
136 | 0, /* rightshift */ | |
137 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
138 | 24, /* bitsize */ | |
139 | false, /* pc_relative */ | |
140 | 0, /* bitpos */ | |
141 | complain_overflow_bitfield, /* complain_on_overflow */ | |
142 | NULL, /* special_function */ | |
143 | "R_H8_DIR24R8", /* name */ | |
144 | true, /* partial_inplace */ | |
145 | 0xff000000, /* src_mask */ | |
146 | 0x00ffffff, /* dst_mask */ | |
147 | false), /* pcrel_offset */ | |
148 | #define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1) | |
149 | HOWTO (R_H8_DIR32A16, /* type */ | |
150 | 0, /* rightshift */ | |
151 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
152 | 32, /* bitsize */ | |
153 | false, /* pc_relative */ | |
154 | 0, /* bitpos */ | |
155 | complain_overflow_dont, /* complain_on_overflow */ | |
156 | NULL, /* special_function */ | |
157 | "R_H8_DIR32", /* name */ | |
158 | false, /* partial_inplace */ | |
159 | 0, /* src_mask */ | |
160 | 0xffffffff, /* dst_mask */ | |
161 | false), /* pcrel_offset */ | |
162 | }; | |
163 | ||
164 | /* This structure is used to map BFD reloc codes to H8 ELF relocs. */ | |
165 | ||
166 | struct elf_reloc_map | |
167 | { | |
168 | bfd_reloc_code_real_type bfd_reloc_val; | |
169 | unsigned char howto_index; | |
170 | }; | |
171 | ||
172 | /* An array mapping BFD reloc codes to SH ELF relocs. */ | |
173 | ||
174 | static const struct elf_reloc_map h8_reloc_map[] = | |
175 | { | |
176 | { BFD_RELOC_NONE, R_H8_NONE_X }, | |
177 | { BFD_RELOC_32, R_H8_DIR32_X }, | |
178 | { BFD_RELOC_16, R_H8_DIR16_X }, | |
179 | { BFD_RELOC_8, R_H8_DIR8_X }, | |
180 | { BFD_RELOC_H8_DIR16A8, R_H8_DIR16A8_X }, | |
181 | { BFD_RELOC_H8_DIR16R8, R_H8_DIR16R8_X }, | |
182 | { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X }, | |
183 | { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X }, | |
184 | { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X }, | |
185 | }; | |
186 | ||
187 | static reloc_howto_type * | |
188 | elf32_h8_reloc_type_lookup (abfd, code) | |
189 | bfd *abfd ATTRIBUTE_UNUSED; | |
190 | bfd_reloc_code_real_type code; | |
191 | { | |
192 | unsigned int i; | |
193 | ||
194 | for (i = 0; i < sizeof (h8_reloc_map) / sizeof (struct elf_reloc_map); i++) | |
195 | { | |
196 | if (h8_reloc_map[i].bfd_reloc_val == code) | |
197 | return &h8_elf_howto_table[(int) h8_reloc_map[i].howto_index]; | |
198 | } | |
199 | return NULL; | |
200 | } | |
201 | ||
202 | static void | |
203 | elf32_h8_info_to_howto (abfd, bfd_reloc, elf_reloc) | |
204 | bfd *abfd ATTRIBUTE_UNUSED; | |
205 | arelent *bfd_reloc; | |
206 | Elf32_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED; | |
207 | { | |
208 | unsigned int r; | |
209 | unsigned int i; | |
210 | ||
211 | r = ELF32_R_TYPE (elf_reloc->r_info); | |
212 | for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++) | |
213 | if (h8_elf_howto_table[i].type== r) | |
214 | { | |
215 | bfd_reloc->howto = &h8_elf_howto_table[i]; | |
216 | return; | |
217 | } | |
218 | abort (); | |
219 | } | |
220 | ||
221 | static void | |
222 | elf32_h8_info_to_howto_rel (abfd, bfd_reloc, elf_reloc) | |
223 | bfd *abfd ATTRIBUTE_UNUSED; | |
224 | arelent *bfd_reloc; | |
225 | Elf32_Internal_Rel *elf_reloc ATTRIBUTE_UNUSED; | |
226 | { | |
227 | unsigned int r; | |
228 | ||
229 | abort (); | |
230 | r = ELF32_R_TYPE (elf_reloc->r_info); | |
231 | bfd_reloc->howto = &h8_elf_howto_table[r]; | |
232 | } | |
233 | ||
234 | #define TARGET_BIG_SYM bfd_elf32_h8300_vec | |
235 | #define TARGET_BIG_NAME "elf32-h8300" | |
236 | #define ELF_ARCH bfd_arch_h8300 | |
237 | #define ELF_MACHINE_CODE EM_H8_300 | |
238 | #define ELF_MAXPAGESIZE 0x1 | |
239 | #define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup | |
240 | #define elf_info_to_howto elf32_h8_info_to_howto | |
241 | #define elf_info_to_howto_rel elf32_h8_info_to_howto_rel | |
242 | ||
243 | /* ??? when elf_backend_relocate_section is not defined, elf32-target.h | |
244 | defaults to using _bfd_generic_link_hash_table_create, but | |
245 | elflink.h:bfd_elf32_size_dynamic_sections uses | |
246 | dynobj = elf_hash_table (info)->dynobj; | |
247 | and thus requires an elf hash table. */ | |
248 | #define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create | |
249 | ||
250 | #include "elf32-target.h" |