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fe944acf FT |
1 | /* NFP-specific support for 64-bit ELF |
2 | Copyright (C) 2017-2018 Free Software Foundation, Inc. | |
3 | Contributed by Francois H. Theron <francois.theron@netronome.com> | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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, | |
20 | Boston, MA 02110-1301, USA. */ | |
21 | ||
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/nfp.h" | |
27 | #include "bfd_stdint.h" | |
28 | ||
29 | ||
30 | static bfd_reloc_status_type | |
31 | elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED, | |
32 | arelent * reloc_entry, | |
33 | asymbol * symbol, | |
34 | void *data ATTRIBUTE_UNUSED, | |
35 | asection * input_section, | |
36 | bfd * output_bfd, | |
37 | char **error_message ATTRIBUTE_UNUSED); | |
38 | ||
39 | /* We don't actually apply any relocations in this toolset | |
40 | so we make them all do nothing, but at least display useful | |
41 | names. | |
42 | Most of these are mainly used by the NFP toolchain to resolve things | |
43 | before the final ELF file is created. */ | |
44 | static reloc_howto_type elf_nfp_howto_table[] = | |
45 | { | |
46 | HOWTO (R_NFP_NOTYPE, /* Type. */ | |
47 | 0, /* Rightshift. */ | |
48 | 3, /* Size. */ | |
49 | 0, /* Bitsize. */ | |
50 | FALSE, /* PC_relative. */ | |
51 | 0, /* Bitpos. */ | |
52 | complain_overflow_dont,/* Complain_on_overflow. */ | |
53 | elf64_nfp_reloc, /* Special_function. */ | |
54 | "R_NFP_NOTYPE", /* Name. */ | |
55 | FALSE, /* Partial_inplace. */ | |
56 | 0, /* Src_mask. */ | |
57 | 0, /* Dst_mask. */ | |
58 | FALSE), /* PCrel_offset. */ | |
59 | HOWTO (R_NFP_W32LE, 0, 3, 0, FALSE, 0, | |
60 | complain_overflow_dont, elf64_nfp_reloc, | |
61 | "R_NFP_W32LE", | |
62 | FALSE, 0, 0, FALSE), | |
63 | HOWTO (R_NFP_SRC8_A, 0, 3, 0, FALSE, 0, | |
64 | complain_overflow_dont, elf64_nfp_reloc, | |
65 | "R_NFP_SRC8_A", | |
66 | FALSE, 0, 0, FALSE), | |
67 | HOWTO (R_NFP_SRC8_B, 0, 3, 0, FALSE, 0, | |
68 | complain_overflow_dont, elf64_nfp_reloc, | |
69 | "R_NFP_SRC8_B", | |
70 | FALSE, 0, 0, FALSE), | |
71 | HOWTO (R_NFP_IMMED8_I, 0, 3, 0, FALSE, 0, | |
72 | complain_overflow_dont, elf64_nfp_reloc, | |
73 | "R_NFP_IMMED8_I", | |
74 | FALSE, 0, 0, FALSE), | |
75 | HOWTO (R_NFP_SC, 0, 3, 0, FALSE, 0, | |
76 | complain_overflow_dont, elf64_nfp_reloc, | |
77 | "R_NFP_SC", | |
78 | FALSE, 0, 0, FALSE), | |
79 | HOWTO (R_NFP_IMMED_LO16_I_A, 0, 3, 0, FALSE, 0, | |
80 | complain_overflow_dont, elf64_nfp_reloc, | |
81 | "R_NFP_IMMED_LO16_I_A", | |
82 | FALSE, 0, 0, FALSE), | |
83 | HOWTO (R_NFP_IMMED_LO16_I_B, 0, 3, 0, FALSE, 0, | |
84 | complain_overflow_dont, elf64_nfp_reloc, | |
85 | "R_NFP_IMMED_LO16_I_B", | |
86 | TRUE, 0, 0, FALSE), | |
87 | HOWTO (R_NFP_SRC7_B, 0, 3, 0, FALSE, 0, | |
88 | complain_overflow_dont, elf64_nfp_reloc, | |
89 | "R_NFP_SRC7_B", | |
90 | FALSE, 0, 0, FALSE), | |
91 | HOWTO (R_NFP_SRC7_A, 0, 3, 0, FALSE, 0, | |
92 | complain_overflow_dont, elf64_nfp_reloc, | |
93 | "R_NFP_SRC7_A", | |
94 | FALSE, 0, 0, FALSE), | |
95 | HOWTO (R_NFP_SRC8_I_B, 0, 3, 0, FALSE, 0, | |
96 | complain_overflow_dont, elf64_nfp_reloc, | |
97 | "R_NFP_SRC8_I_B", | |
98 | FALSE, 0, 0, FALSE), | |
99 | HOWTO (R_NFP_SRC8_I_A, 0, 3, 0, FALSE, 0, | |
100 | complain_overflow_dont, elf64_nfp_reloc, | |
101 | "R_NFP_SRC8_I_A", | |
102 | FALSE, 0, 0, FALSE), | |
103 | HOWTO (R_NFP_IMMED_HI16_I_A, 0, 3, 0, FALSE, 0, | |
104 | complain_overflow_dont, elf64_nfp_reloc, | |
105 | "R_NFP_IMMED_HI16_I_A", | |
106 | FALSE, 0, 0, FALSE), | |
107 | HOWTO (R_NFP_IMMED_HI16_I_B, 0, 3, 0, FALSE, 0, | |
108 | complain_overflow_dont, elf64_nfp_reloc, | |
109 | "R_NFP_IMMED_HI16_I_B", | |
110 | FALSE, 0, 0, FALSE), | |
111 | HOWTO (R_NFP_W64LE, 0, 3, 0, FALSE, 0, | |
112 | complain_overflow_dont, elf64_nfp_reloc, | |
113 | "R_NFP_W64LE", | |
114 | FALSE, 0, 0, FALSE), | |
115 | HOWTO (R_NFP_SH_INFO, 0, 3, 0, FALSE, 0, | |
116 | complain_overflow_dont, elf64_nfp_reloc, | |
117 | "R_NFP_SH_INFO", | |
118 | FALSE, 0, 0, FALSE), | |
119 | HOWTO (R_NFP_W32BE, 0, 3, 0, FALSE, 0, | |
120 | complain_overflow_dont, elf64_nfp_reloc, | |
121 | "R_NFP_W32BE", | |
122 | FALSE, 0, 0, FALSE), | |
123 | HOWTO (R_NFP_W64BE, 0, 3, 0, FALSE, 0, | |
124 | complain_overflow_dont, elf64_nfp_reloc, | |
125 | "R_NFP_W64BE", | |
126 | FALSE, 0, 0, FALSE), | |
127 | HOWTO (R_NFP_W32_29_24, 0, 3, 0, FALSE, 0, | |
128 | complain_overflow_dont, elf64_nfp_reloc, | |
129 | "R_NFP_W32_29_24", | |
130 | FALSE, 0, 0, FALSE), | |
131 | HOWTO (R_NFP_W32LE_AND, 0, 3, 0, FALSE, 0, | |
132 | complain_overflow_dont, elf64_nfp_reloc, | |
133 | "R_NFP_W32LE_AND", | |
134 | FALSE, 0, 0, FALSE), | |
135 | HOWTO (R_NFP_W32BE_AND, 0, 3, 0, FALSE, 0, | |
136 | complain_overflow_dont, elf64_nfp_reloc, | |
137 | "R_NFP_W32BE_AND", | |
138 | FALSE, 0, 0, FALSE), | |
139 | HOWTO (R_NFP_W32LE_OR, 0, 3, 0, FALSE, 0, | |
140 | complain_overflow_dont, elf64_nfp_reloc, | |
141 | "R_NFP_W32LE_OR", | |
142 | FALSE, 0, 0, FALSE), | |
143 | HOWTO (R_NFP_W32BE_OR, 0, 3, 0, FALSE, 0, | |
144 | complain_overflow_dont, elf64_nfp_reloc, | |
145 | "R_NFP_W32BE_OR", | |
146 | FALSE, 0, 0, FALSE), | |
147 | HOWTO (R_NFP_W64LE_AND, 0, 3, 0, FALSE, 0, | |
148 | complain_overflow_dont, elf64_nfp_reloc, | |
149 | "R_NFP_W64LE_AND", | |
150 | FALSE, 0, 0, FALSE), | |
151 | HOWTO (R_NFP_W64BE_AND, 0, 3, 0, FALSE, 0, | |
152 | complain_overflow_dont, elf64_nfp_reloc, | |
153 | "R_NFP_W64BE_AND", | |
154 | FALSE, 0, 0, FALSE), | |
155 | HOWTO (R_NFP_W64LE_OR, 0, 3, 0, FALSE, 0, | |
156 | complain_overflow_dont, elf64_nfp_reloc, | |
157 | "R_NFP_W64LE_OR", | |
158 | FALSE, 0, 0, FALSE), | |
159 | HOWTO (R_NFP_W64BE_OR, 0, 3, 0, FALSE, 0, | |
160 | complain_overflow_dont, elf64_nfp_reloc, | |
161 | "R_NFP_W64BE_OR", | |
162 | FALSE, 0, 0, FALSE) | |
163 | }; | |
164 | ||
165 | static bfd_boolean | |
166 | elf64_nfp_object_p (bfd * abfd) | |
167 | { | |
168 | /* If the e_machine value is one of the unofficial ones, we convert | |
169 | it first and set e_flags accordingly for later consistency. */ | |
170 | if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_3200) | |
171 | { | |
172 | elf_elfheader (abfd)->e_machine = EM_NFP; | |
173 | elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0); | |
174 | elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_3200); | |
175 | } | |
176 | else if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_6000) | |
177 | { | |
178 | elf_elfheader (abfd)->e_machine = EM_NFP; | |
179 | elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0); | |
180 | elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_6000); | |
181 | } | |
182 | ||
183 | if (elf_elfheader (abfd)->e_machine == EM_NFP) | |
184 | { | |
185 | int e_mach = EF_NFP_MACH (elf_elfheader (abfd)->e_flags); | |
186 | ||
187 | switch (e_mach) | |
188 | { | |
189 | case E_NFP_MACH_3200: | |
190 | case E_NFP_MACH_6000: | |
191 | if (!bfd_default_set_arch_mach (abfd, bfd_arch_nfp, e_mach)) | |
192 | return FALSE; | |
193 | default: | |
194 | break; | |
195 | } | |
196 | } | |
197 | ||
198 | return TRUE; | |
199 | } | |
200 | ||
201 | static bfd_boolean | |
202 | elf64_nfp_section_from_shdr (bfd * abfd, | |
203 | Elf_Internal_Shdr * hdr, | |
204 | const char *name, int shindex) | |
205 | { | |
206 | switch (hdr->sh_type) | |
207 | { | |
208 | case SHT_NFP_INITREG: | |
209 | case SHT_NFP_MECONFIG: | |
210 | case SHT_NFP_UDEBUG: | |
211 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
212 | default: | |
213 | return FALSE; | |
214 | } | |
215 | } | |
216 | ||
217 | bfd_reloc_status_type | |
218 | elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED, | |
219 | arelent * reloc_entry ATTRIBUTE_UNUSED, | |
220 | asymbol * symbol ATTRIBUTE_UNUSED, | |
221 | void *data ATTRIBUTE_UNUSED, | |
222 | asection * input_section ATTRIBUTE_UNUSED, | |
223 | bfd * output_bfd ATTRIBUTE_UNUSED, | |
224 | char **error_message ATTRIBUTE_UNUSED) | |
225 | { | |
226 | return bfd_reloc_ok; | |
227 | } | |
228 | ||
229 | static bfd_boolean | |
230 | elf64_nfp_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, | |
231 | arelent * cache_ptr, Elf_Internal_Rela * dst) | |
232 | { | |
233 | unsigned int r_type; | |
234 | ||
235 | r_type = ELF64_R_TYPE (dst->r_info); | |
236 | if (r_type >= R_NFP_MAX) | |
237 | { | |
238 | /* xgettext:c-format */ | |
239 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
240 | abfd, r_type); | |
241 | bfd_set_error (bfd_error_bad_value); | |
242 | return FALSE; | |
243 | } | |
244 | cache_ptr->howto = &elf_nfp_howto_table[r_type]; | |
245 | return TRUE; | |
246 | } | |
247 | ||
248 | static reloc_howto_type * | |
249 | elf64_nfp_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
250 | bfd_reloc_code_real_type code ATTRIBUTE_UNUSED) | |
251 | { | |
252 | return NULL; | |
253 | } | |
254 | ||
255 | static reloc_howto_type * | |
256 | elf64_nfp_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
257 | const char *r_name ATTRIBUTE_UNUSED) | |
258 | { | |
259 | return NULL; | |
260 | } | |
261 | ||
262 | #define ELF_ARCH bfd_arch_nfp | |
263 | #define ELF_MACHINE_CODE EM_NFP | |
264 | #define ELF_MACHINE_ALT1 E_NFP_MACH_6000 | |
265 | #define ELF_MACHINE_ALT2 E_NFP_MACH_3200 | |
266 | #define ELF_MAXPAGESIZE 1 | |
267 | #define TARGET_LITTLE_NAME "elf64-nfp" | |
268 | #define TARGET_LITTLE_SYM nfp_elf64_vec | |
269 | ||
270 | #define elf_backend_object_p elf64_nfp_object_p | |
271 | #define elf_backend_section_from_shdr elf64_nfp_section_from_shdr | |
272 | #define elf_info_to_howto elf64_nfp_info_to_howto | |
273 | #define bfd_elf64_bfd_reloc_type_lookup elf64_nfp_reloc_type_lookup | |
274 | #define bfd_elf64_bfd_reloc_name_lookup elf64_nfp_reloc_name_lookup | |
275 | ||
276 | #include "elf64-target.h" |