Commit | Line | Data |
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ae1b99e4 | 1 | /* Matsushita 10200 specific support for 32-bit ELF |
b3ef3894 | 2 | Copyright (C) 1996, 1997 Free Software Foundation, Inc. |
efc2b064 JL |
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 | ||
25 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
26 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
e14af8fc JL |
27 | static void mn10200_info_to_howto |
28 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); | |
efc2b064 | 29 | |
e14af8fc JL |
30 | |
31 | /* We have to use RELA instructions since md_apply_fix3 in the assembler | |
32 | does absolutely nothing. */ | |
33 | #define USE_RELA | |
efc2b064 JL |
34 | |
35 | enum reloc_type | |
36 | { | |
ae1b99e4 | 37 | R_MN10200_NONE = 0, |
e14af8fc JL |
38 | R_MN10200_32, |
39 | R_MN10200_16, | |
40 | R_MN10200_8, | |
b3ef3894 JL |
41 | R_MN10200_24, |
42 | R_MN10200_PCREL8, | |
1a2faf1f | 43 | R_MN10200_PCREL16, |
b3ef3894 | 44 | R_MN10200_PCREL24, |
ae1b99e4 | 45 | R_MN10200_MAX |
efc2b064 JL |
46 | }; |
47 | ||
ae1b99e4 | 48 | static reloc_howto_type elf_mn10200_howto_table[] = |
efc2b064 | 49 | { |
e14af8fc | 50 | /* Dummy relocation. Does nothing. */ |
ae1b99e4 | 51 | HOWTO (R_MN10200_NONE, |
efc2b064 JL |
52 | 0, |
53 | 2, | |
54 | 16, | |
55 | false, | |
56 | 0, | |
57 | complain_overflow_bitfield, | |
58 | bfd_elf_generic_reloc, | |
ae1b99e4 | 59 | "R_MN10200_NONE", |
efc2b064 JL |
60 | false, |
61 | 0, | |
62 | 0, | |
63 | false), | |
e14af8fc JL |
64 | /* Standard 32 bit reloc. */ |
65 | HOWTO (R_MN10200_32, | |
66 | 0, | |
67 | 2, | |
68 | 32, | |
69 | false, | |
70 | 0, | |
71 | complain_overflow_bitfield, | |
72 | bfd_elf_generic_reloc, | |
73 | "R_MN10200_32", | |
74 | false, | |
75 | 0xffffffff, | |
76 | 0xffffffff, | |
77 | false), | |
78 | /* Standard 16 bit reloc. */ | |
79 | HOWTO (R_MN10200_16, | |
80 | 0, | |
81 | 1, | |
82 | 16, | |
83 | false, | |
84 | 0, | |
85 | complain_overflow_bitfield, | |
86 | bfd_elf_generic_reloc, | |
87 | "R_MN10200_16", | |
88 | false, | |
89 | 0xffff, | |
90 | 0xffff, | |
91 | false), | |
92 | /* Standard 8 bit reloc. */ | |
93 | HOWTO (R_MN10200_8, | |
94 | 0, | |
95 | 0, | |
96 | 8, | |
97 | false, | |
98 | 0, | |
99 | complain_overflow_bitfield, | |
100 | bfd_elf_generic_reloc, | |
101 | "R_MN10200_8", | |
102 | false, | |
103 | 0xff, | |
104 | 0xff, | |
105 | false), | |
b3ef3894 JL |
106 | /* Standard 24 bit reloc. */ |
107 | HOWTO (R_MN10200_24, | |
e14af8fc JL |
108 | 0, |
109 | 2, | |
b3ef3894 JL |
110 | 24, |
111 | false, | |
e14af8fc JL |
112 | 0, |
113 | complain_overflow_bitfield, | |
b3ef3894 JL |
114 | bfd_elf_generic_reloc, |
115 | "R_MN10200_24", | |
116 | false, | |
117 | 0xffffff, | |
118 | 0xffffff, | |
e14af8fc | 119 | false), |
b3ef3894 JL |
120 | /* Simple 8 pc-relative reloc. */ |
121 | HOWTO (R_MN10200_PCREL8, | |
e14af8fc JL |
122 | 0, |
123 | 0, | |
124 | 8, | |
125 | true, | |
126 | 0, | |
127 | complain_overflow_bitfield, | |
40131692 | 128 | bfd_elf_generic_reloc, |
b3ef3894 | 129 | "R_MN10200_PCREL8", |
40131692 | 130 | false, |
e14af8fc JL |
131 | 0xff, |
132 | 0xff, | |
133 | true), | |
1a2faf1f JL |
134 | /* Simple 16 pc-relative reloc. */ |
135 | HOWTO (R_MN10200_PCREL16, | |
136 | 0, | |
137 | 1, | |
138 | 16, | |
139 | true, | |
140 | 0, | |
141 | complain_overflow_bitfield, | |
142 | bfd_elf_generic_reloc, | |
143 | "R_MN10200_PCREL16", | |
144 | false, | |
145 | 0xffff, | |
146 | 0xffff, | |
147 | true), | |
b3ef3894 | 148 | /* Simple 32bit pc-relative reloc with a 1 byte adjustment |
e14af8fc | 149 | to get the pc-relative offset correct. */ |
b3ef3894 | 150 | HOWTO (R_MN10200_PCREL24, |
e14af8fc JL |
151 | 0, |
152 | 2, | |
b3ef3894 | 153 | 24, |
e14af8fc JL |
154 | true, |
155 | 0, | |
156 | complain_overflow_bitfield, | |
40131692 | 157 | bfd_elf_generic_reloc, |
b3ef3894 | 158 | "R_MN10200_PCREL24", |
40131692 | 159 | false, |
b3ef3894 JL |
160 | 0xffffff, |
161 | 0xffffff, | |
483e1b91 | 162 | true), |
efc2b064 JL |
163 | }; |
164 | ||
ae1b99e4 | 165 | struct mn10200_reloc_map |
efc2b064 JL |
166 | { |
167 | unsigned char bfd_reloc_val; | |
168 | unsigned char elf_reloc_val; | |
169 | }; | |
170 | ||
ae1b99e4 | 171 | static const struct mn10200_reloc_map mn10200_reloc_map[] = |
efc2b064 | 172 | { |
ae1b99e4 | 173 | { BFD_RELOC_NONE, R_MN10200_NONE, }, |
e14af8fc JL |
174 | { BFD_RELOC_32, R_MN10200_32, }, |
175 | { BFD_RELOC_16, R_MN10200_16, }, | |
176 | { BFD_RELOC_8, R_MN10200_8, }, | |
b3ef3894 JL |
177 | { BFD_RELOC_24, R_MN10200_24, }, |
178 | { BFD_RELOC_8_PCREL, R_MN10200_PCREL8, }, | |
1a2faf1f | 179 | { BFD_RELOC_16_PCREL, R_MN10200_PCREL16, }, |
b3ef3894 | 180 | { BFD_RELOC_24_PCREL, R_MN10200_PCREL24, }, |
efc2b064 JL |
181 | }; |
182 | ||
183 | static reloc_howto_type * | |
184 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
185 | bfd *abfd; | |
186 | bfd_reloc_code_real_type code; | |
187 | { | |
188 | unsigned int i; | |
189 | ||
190 | for (i = 0; | |
ae1b99e4 | 191 | i < sizeof (mn10200_reloc_map) / sizeof (struct mn10200_reloc_map); |
efc2b064 JL |
192 | i++) |
193 | { | |
ae1b99e4 JL |
194 | if (mn10200_reloc_map[i].bfd_reloc_val == code) |
195 | return &elf_mn10200_howto_table[mn10200_reloc_map[i].elf_reloc_val]; | |
efc2b064 JL |
196 | } |
197 | ||
198 | return NULL; | |
199 | } | |
200 | ||
e14af8fc | 201 | /* Set the howto pointer for an MN10200 ELF reloc. */ |
efc2b064 JL |
202 | |
203 | static void | |
e14af8fc | 204 | mn10200_info_to_howto (abfd, cache_ptr, dst) |
efc2b064 JL |
205 | bfd *abfd; |
206 | arelent *cache_ptr; | |
e14af8fc | 207 | Elf32_Internal_Rela *dst; |
efc2b064 JL |
208 | { |
209 | unsigned int r_type; | |
210 | ||
211 | r_type = ELF32_R_TYPE (dst->r_info); | |
ae1b99e4 JL |
212 | BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX); |
213 | cache_ptr->howto = &elf_mn10200_howto_table[r_type]; | |
efc2b064 JL |
214 | } |
215 | ||
ae1b99e4 JL |
216 | #define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec |
217 | #define TARGET_LITTLE_NAME "elf32-mn10200" | |
218 | #define ELF_ARCH bfd_arch_mn10200 | |
219 | #define ELF_MACHINE_CODE EM_CYGNUS_MN10200 | |
efc2b064 JL |
220 | #define ELF_MAXPAGESIZE 0x1000 |
221 | ||
e14af8fc JL |
222 | #define elf_info_to_howto mn10200_info_to_howto |
223 | #define elf_info_to_howto_rel 0 | |
224 | ||
225 | #define elf_symbol_leading_char '_' | |
efc2b064 JL |
226 | |
227 | #include "elf32-target.h" |