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fe944acf 1/* NFP-specific support for 64-bit ELF
b3adc24a 2 Copyright (C) 2017-2020 Free Software Foundation, Inc.
fe944acf
FT
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"
fe944acf
FT
27
28
29static bfd_reloc_status_type
30elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED,
31 arelent * reloc_entry,
32 asymbol * symbol,
33 void *data ATTRIBUTE_UNUSED,
34 asection * input_section,
35 bfd * output_bfd,
36 char **error_message ATTRIBUTE_UNUSED);
37
38/* We don't actually apply any relocations in this toolset
39 so we make them all do nothing, but at least display useful
40 names.
41 Most of these are mainly used by the NFP toolchain to resolve things
42 before the final ELF file is created. */
43static reloc_howto_type elf_nfp_howto_table[] =
44{
45 HOWTO (R_NFP_NOTYPE, /* Type. */
46 0, /* Rightshift. */
47 3, /* Size. */
48 0, /* Bitsize. */
49 FALSE, /* PC_relative. */
50 0, /* Bitpos. */
51 complain_overflow_dont,/* Complain_on_overflow. */
52 elf64_nfp_reloc, /* Special_function. */
53 "R_NFP_NOTYPE", /* Name. */
54 FALSE, /* Partial_inplace. */
55 0, /* Src_mask. */
56 0, /* Dst_mask. */
57 FALSE), /* PCrel_offset. */
58 HOWTO (R_NFP_W32LE, 0, 3, 0, FALSE, 0,
59 complain_overflow_dont, elf64_nfp_reloc,
60 "R_NFP_W32LE",
61 FALSE, 0, 0, FALSE),
62 HOWTO (R_NFP_SRC8_A, 0, 3, 0, FALSE, 0,
63 complain_overflow_dont, elf64_nfp_reloc,
64 "R_NFP_SRC8_A",
65 FALSE, 0, 0, FALSE),
66 HOWTO (R_NFP_SRC8_B, 0, 3, 0, FALSE, 0,
67 complain_overflow_dont, elf64_nfp_reloc,
68 "R_NFP_SRC8_B",
69 FALSE, 0, 0, FALSE),
70 HOWTO (R_NFP_IMMED8_I, 0, 3, 0, FALSE, 0,
71 complain_overflow_dont, elf64_nfp_reloc,
72 "R_NFP_IMMED8_I",
73 FALSE, 0, 0, FALSE),
74 HOWTO (R_NFP_SC, 0, 3, 0, FALSE, 0,
75 complain_overflow_dont, elf64_nfp_reloc,
76 "R_NFP_SC",
77 FALSE, 0, 0, FALSE),
78 HOWTO (R_NFP_IMMED_LO16_I_A, 0, 3, 0, FALSE, 0,
79 complain_overflow_dont, elf64_nfp_reloc,
80 "R_NFP_IMMED_LO16_I_A",
81 FALSE, 0, 0, FALSE),
82 HOWTO (R_NFP_IMMED_LO16_I_B, 0, 3, 0, FALSE, 0,
83 complain_overflow_dont, elf64_nfp_reloc,
84 "R_NFP_IMMED_LO16_I_B",
85 TRUE, 0, 0, FALSE),
86 HOWTO (R_NFP_SRC7_B, 0, 3, 0, FALSE, 0,
87 complain_overflow_dont, elf64_nfp_reloc,
88 "R_NFP_SRC7_B",
89 FALSE, 0, 0, FALSE),
90 HOWTO (R_NFP_SRC7_A, 0, 3, 0, FALSE, 0,
91 complain_overflow_dont, elf64_nfp_reloc,
92 "R_NFP_SRC7_A",
93 FALSE, 0, 0, FALSE),
94 HOWTO (R_NFP_SRC8_I_B, 0, 3, 0, FALSE, 0,
95 complain_overflow_dont, elf64_nfp_reloc,
96 "R_NFP_SRC8_I_B",
97 FALSE, 0, 0, FALSE),
98 HOWTO (R_NFP_SRC8_I_A, 0, 3, 0, FALSE, 0,
99 complain_overflow_dont, elf64_nfp_reloc,
100 "R_NFP_SRC8_I_A",
101 FALSE, 0, 0, FALSE),
102 HOWTO (R_NFP_IMMED_HI16_I_A, 0, 3, 0, FALSE, 0,
103 complain_overflow_dont, elf64_nfp_reloc,
104 "R_NFP_IMMED_HI16_I_A",
105 FALSE, 0, 0, FALSE),
106 HOWTO (R_NFP_IMMED_HI16_I_B, 0, 3, 0, FALSE, 0,
107 complain_overflow_dont, elf64_nfp_reloc,
108 "R_NFP_IMMED_HI16_I_B",
109 FALSE, 0, 0, FALSE),
110 HOWTO (R_NFP_W64LE, 0, 3, 0, FALSE, 0,
111 complain_overflow_dont, elf64_nfp_reloc,
112 "R_NFP_W64LE",
113 FALSE, 0, 0, FALSE),
114 HOWTO (R_NFP_SH_INFO, 0, 3, 0, FALSE, 0,
115 complain_overflow_dont, elf64_nfp_reloc,
116 "R_NFP_SH_INFO",
117 FALSE, 0, 0, FALSE),
118 HOWTO (R_NFP_W32BE, 0, 3, 0, FALSE, 0,
119 complain_overflow_dont, elf64_nfp_reloc,
120 "R_NFP_W32BE",
121 FALSE, 0, 0, FALSE),
122 HOWTO (R_NFP_W64BE, 0, 3, 0, FALSE, 0,
123 complain_overflow_dont, elf64_nfp_reloc,
124 "R_NFP_W64BE",
125 FALSE, 0, 0, FALSE),
126 HOWTO (R_NFP_W32_29_24, 0, 3, 0, FALSE, 0,
127 complain_overflow_dont, elf64_nfp_reloc,
128 "R_NFP_W32_29_24",
129 FALSE, 0, 0, FALSE),
130 HOWTO (R_NFP_W32LE_AND, 0, 3, 0, FALSE, 0,
131 complain_overflow_dont, elf64_nfp_reloc,
132 "R_NFP_W32LE_AND",
133 FALSE, 0, 0, FALSE),
134 HOWTO (R_NFP_W32BE_AND, 0, 3, 0, FALSE, 0,
135 complain_overflow_dont, elf64_nfp_reloc,
136 "R_NFP_W32BE_AND",
137 FALSE, 0, 0, FALSE),
138 HOWTO (R_NFP_W32LE_OR, 0, 3, 0, FALSE, 0,
139 complain_overflow_dont, elf64_nfp_reloc,
140 "R_NFP_W32LE_OR",
141 FALSE, 0, 0, FALSE),
142 HOWTO (R_NFP_W32BE_OR, 0, 3, 0, FALSE, 0,
143 complain_overflow_dont, elf64_nfp_reloc,
144 "R_NFP_W32BE_OR",
145 FALSE, 0, 0, FALSE),
146 HOWTO (R_NFP_W64LE_AND, 0, 3, 0, FALSE, 0,
147 complain_overflow_dont, elf64_nfp_reloc,
148 "R_NFP_W64LE_AND",
149 FALSE, 0, 0, FALSE),
150 HOWTO (R_NFP_W64BE_AND, 0, 3, 0, FALSE, 0,
151 complain_overflow_dont, elf64_nfp_reloc,
152 "R_NFP_W64BE_AND",
153 FALSE, 0, 0, FALSE),
154 HOWTO (R_NFP_W64LE_OR, 0, 3, 0, FALSE, 0,
155 complain_overflow_dont, elf64_nfp_reloc,
156 "R_NFP_W64LE_OR",
157 FALSE, 0, 0, FALSE),
158 HOWTO (R_NFP_W64BE_OR, 0, 3, 0, FALSE, 0,
159 complain_overflow_dont, elf64_nfp_reloc,
160 "R_NFP_W64BE_OR",
161 FALSE, 0, 0, FALSE)
162};
163
164static bfd_boolean
165elf64_nfp_object_p (bfd * abfd)
166{
167 /* If the e_machine value is one of the unofficial ones, we convert
168 it first and set e_flags accordingly for later consistency. */
169 if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_3200)
170 {
171 elf_elfheader (abfd)->e_machine = EM_NFP;
172 elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0);
173 elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_3200);
174 }
175 else if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_6000)
176 {
177 elf_elfheader (abfd)->e_machine = EM_NFP;
178 elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0);
179 elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_6000);
180 }
181
182 if (elf_elfheader (abfd)->e_machine == EM_NFP)
183 {
184 int e_mach = EF_NFP_MACH (elf_elfheader (abfd)->e_flags);
185
186 switch (e_mach)
187 {
188 case E_NFP_MACH_3200:
189 case E_NFP_MACH_6000:
190 if (!bfd_default_set_arch_mach (abfd, bfd_arch_nfp, e_mach))
191 return FALSE;
192 default:
193 break;
194 }
195 }
196
197 return TRUE;
198}
199
200static bfd_boolean
201elf64_nfp_section_from_shdr (bfd * abfd,
202 Elf_Internal_Shdr * hdr,
203 const char *name, int shindex)
204{
205 switch (hdr->sh_type)
206 {
207 case SHT_NFP_INITREG:
208 case SHT_NFP_MECONFIG:
209 case SHT_NFP_UDEBUG:
210 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
211 default:
212 return FALSE;
213 }
214}
215
216bfd_reloc_status_type
217elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED,
218 arelent * reloc_entry ATTRIBUTE_UNUSED,
219 asymbol * symbol ATTRIBUTE_UNUSED,
220 void *data ATTRIBUTE_UNUSED,
221 asection * input_section ATTRIBUTE_UNUSED,
222 bfd * output_bfd ATTRIBUTE_UNUSED,
223 char **error_message ATTRIBUTE_UNUSED)
224{
225 return bfd_reloc_ok;
226}
227
228static bfd_boolean
229elf64_nfp_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
230 arelent * cache_ptr, Elf_Internal_Rela * dst)
231{
232 unsigned int r_type;
233
234 r_type = ELF64_R_TYPE (dst->r_info);
235 if (r_type >= R_NFP_MAX)
236 {
237 /* xgettext:c-format */
238 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
239 abfd, r_type);
240 bfd_set_error (bfd_error_bad_value);
241 return FALSE;
242 }
243 cache_ptr->howto = &elf_nfp_howto_table[r_type];
244 return TRUE;
245}
246
247static reloc_howto_type *
248elf64_nfp_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
249 bfd_reloc_code_real_type code ATTRIBUTE_UNUSED)
250{
251 return NULL;
252}
253
254static reloc_howto_type *
255elf64_nfp_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED,
256 const char *r_name ATTRIBUTE_UNUSED)
257{
258 return NULL;
259}
260
261#define ELF_ARCH bfd_arch_nfp
262#define ELF_MACHINE_CODE EM_NFP
263#define ELF_MACHINE_ALT1 E_NFP_MACH_6000
264#define ELF_MACHINE_ALT2 E_NFP_MACH_3200
265#define ELF_MAXPAGESIZE 1
266#define TARGET_LITTLE_NAME "elf64-nfp"
267#define TARGET_LITTLE_SYM nfp_elf64_vec
268
269#define elf_backend_object_p elf64_nfp_object_p
270#define elf_backend_section_from_shdr elf64_nfp_section_from_shdr
271#define elf_info_to_howto elf64_nfp_info_to_howto
272#define bfd_elf64_bfd_reloc_type_lookup elf64_nfp_reloc_type_lookup
273#define bfd_elf64_bfd_reloc_name_lookup elf64_nfp_reloc_name_lookup
274
275#include "elf64-target.h"