| 1 | /* NFP-specific support for 64-bit ELF |
| 2 | Copyright (C) 2017-2019 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 | |
| 28 | |
| 29 | static bfd_reloc_status_type |
| 30 | elf64_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. */ |
| 43 | static 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 | |
| 164 | static bfd_boolean |
| 165 | elf64_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 | |
| 200 | static bfd_boolean |
| 201 | elf64_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 | |
| 216 | bfd_reloc_status_type |
| 217 | elf64_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 | |
| 228 | static bfd_boolean |
| 229 | elf64_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 | |
| 247 | static reloc_howto_type * |
| 248 | elf64_nfp_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 249 | bfd_reloc_code_real_type code ATTRIBUTE_UNUSED) |
| 250 | { |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | static reloc_howto_type * |
| 255 | elf64_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" |